1 | /* |
1 | /* |
2 | * libev event processing core, watcher management |
2 | * libev event processing core, watcher management |
3 | * |
3 | * |
4 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007-2019 Marc Alexander Lehmann <libev@schmorp.de> |
5 | * All rights reserved. |
5 | * All rights reserved. |
6 | * |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
8 | * modification, are permitted provided that the following conditions are |
8 | * tion, are permitted provided that the following conditions are met: |
9 | * met: |
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10 | * |
9 | * |
11 | * * Redistributions of source code must retain the above copyright |
10 | * 1. Redistributions of source code must retain the above copyright notice, |
12 | * notice, this list of conditions and the following disclaimer. |
11 | * this list of conditions and the following disclaimer. |
13 | * |
12 | * |
14 | * * Redistributions in binary form must reproduce the above |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
15 | * copyright notice, this list of conditions and the following |
14 | * notice, this list of conditions and the following disclaimer in the |
16 | * disclaimer in the documentation and/or other materials provided |
15 | * documentation and/or other materials provided with the distribution. |
17 | * with the distribution. |
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18 | * |
16 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
20 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
21 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
22 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
23 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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24 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
25 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
25 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | * |
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28 | * Alternatively, the contents of this file may be used under the terms of |
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29 | * the GNU General Public License ("GPL") version 2 or any later version, |
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30 | * in which case the provisions of the GPL are applicable instead of |
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31 | * the above. If you wish to allow the use of your version of this file |
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32 | * only under the terms of the GPL and not to allow others to use your |
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33 | * version of this file under the BSD license, indicate your decision |
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34 | * by deleting the provisions above and replace them with the notice |
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35 | * and other provisions required by the GPL. If you do not delete the |
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36 | * provisions above, a recipient may use your version of this file under |
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37 | * either the BSD or the GPL. |
30 | */ |
38 | */ |
31 | |
39 | |
32 | #ifdef __cplusplus |
40 | /* this big block deduces configuration from config.h */ |
33 | extern "C" { |
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34 | #endif |
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35 | |
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36 | #ifndef EV_STANDALONE |
41 | #ifndef EV_STANDALONE |
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42 | # ifdef EV_CONFIG_H |
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43 | # include EV_CONFIG_H |
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44 | # else |
37 | # include "config.h" |
45 | # include "config.h" |
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46 | # endif |
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47 | |
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48 | # if HAVE_FLOOR |
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49 | # ifndef EV_USE_FLOOR |
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50 | # define EV_USE_FLOOR 1 |
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51 | # endif |
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52 | # endif |
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53 | |
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54 | # if HAVE_CLOCK_SYSCALL |
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55 | # ifndef EV_USE_CLOCK_SYSCALL |
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56 | # define EV_USE_CLOCK_SYSCALL 1 |
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57 | # ifndef EV_USE_REALTIME |
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58 | # define EV_USE_REALTIME 0 |
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59 | # endif |
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60 | # ifndef EV_USE_MONOTONIC |
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61 | # define EV_USE_MONOTONIC 1 |
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62 | # endif |
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63 | # endif |
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64 | # elif !defined EV_USE_CLOCK_SYSCALL |
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65 | # define EV_USE_CLOCK_SYSCALL 0 |
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66 | # endif |
38 | |
67 | |
39 | # if HAVE_CLOCK_GETTIME |
68 | # if HAVE_CLOCK_GETTIME |
40 | # ifndef EV_USE_MONOTONIC |
69 | # ifndef EV_USE_MONOTONIC |
41 | # define EV_USE_MONOTONIC 1 |
70 | # define EV_USE_MONOTONIC 1 |
42 | # endif |
71 | # endif |
43 | # ifndef EV_USE_REALTIME |
72 | # ifndef EV_USE_REALTIME |
44 | # define EV_USE_REALTIME 1 |
73 | # define EV_USE_REALTIME 0 |
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74 | # endif |
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75 | # else |
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76 | # ifndef EV_USE_MONOTONIC |
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77 | # define EV_USE_MONOTONIC 0 |
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78 | # endif |
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79 | # ifndef EV_USE_REALTIME |
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80 | # define EV_USE_REALTIME 0 |
45 | # endif |
81 | # endif |
46 | # endif |
82 | # endif |
47 | |
83 | |
48 | # if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT) |
84 | # if HAVE_NANOSLEEP |
49 | # define EV_USE_SELECT 1 |
85 | # ifndef EV_USE_NANOSLEEP |
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86 | # define EV_USE_NANOSLEEP EV_FEATURE_OS |
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87 | # endif |
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88 | # else |
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89 | # undef EV_USE_NANOSLEEP |
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90 | # define EV_USE_NANOSLEEP 0 |
50 | # endif |
91 | # endif |
51 | |
92 | |
52 | # if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL) |
93 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
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94 | # ifndef EV_USE_SELECT |
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95 | # define EV_USE_SELECT EV_FEATURE_BACKENDS |
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96 | # endif |
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97 | # else |
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98 | # undef EV_USE_SELECT |
53 | # define EV_USE_POLL 1 |
99 | # define EV_USE_SELECT 0 |
54 | # endif |
100 | # endif |
55 | |
101 | |
56 | # if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL) |
102 | # if HAVE_POLL && HAVE_POLL_H |
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103 | # ifndef EV_USE_POLL |
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104 | # define EV_USE_POLL EV_FEATURE_BACKENDS |
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105 | # endif |
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106 | # else |
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107 | # undef EV_USE_POLL |
57 | # define EV_USE_EPOLL 1 |
108 | # define EV_USE_POLL 0 |
58 | # endif |
109 | # endif |
59 | |
110 | |
60 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE) |
111 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
61 | # define EV_USE_KQUEUE 1 |
112 | # ifndef EV_USE_EPOLL |
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113 | # define EV_USE_EPOLL EV_FEATURE_BACKENDS |
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114 | # endif |
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115 | # else |
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116 | # undef EV_USE_EPOLL |
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117 | # define EV_USE_EPOLL 0 |
62 | # endif |
118 | # endif |
63 | |
119 | |
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120 | # if HAVE_LINUX_AIO_ABI_H |
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121 | # ifndef EV_USE_LINUXAIO |
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122 | # define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */ |
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123 | # endif |
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124 | # else |
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125 | # undef EV_USE_LINUXAIO |
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126 | # define EV_USE_LINUXAIO 0 |
64 | #endif |
127 | # endif |
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128 | |
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129 | # if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T |
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130 | # ifndef EV_USE_IOURING |
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131 | # define EV_USE_IOURING EV_FEATURE_BACKENDS |
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132 | # endif |
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133 | # else |
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134 | # undef EV_USE_IOURING |
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135 | # define EV_USE_IOURING 0 |
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136 | # endif |
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137 | |
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138 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H |
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139 | # ifndef EV_USE_KQUEUE |
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140 | # define EV_USE_KQUEUE EV_FEATURE_BACKENDS |
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141 | # endif |
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142 | # else |
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143 | # undef EV_USE_KQUEUE |
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144 | # define EV_USE_KQUEUE 0 |
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145 | # endif |
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146 | |
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147 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
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148 | # ifndef EV_USE_PORT |
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149 | # define EV_USE_PORT EV_FEATURE_BACKENDS |
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150 | # endif |
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151 | # else |
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152 | # undef EV_USE_PORT |
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153 | # define EV_USE_PORT 0 |
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154 | # endif |
65 | |
155 | |
66 | #include <math.h> |
156 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
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157 | # ifndef EV_USE_INOTIFY |
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158 | # define EV_USE_INOTIFY EV_FEATURE_OS |
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159 | # endif |
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160 | # else |
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161 | # undef EV_USE_INOTIFY |
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162 | # define EV_USE_INOTIFY 0 |
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163 | # endif |
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164 | |
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165 | # if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H |
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166 | # ifndef EV_USE_SIGNALFD |
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167 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
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168 | # endif |
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169 | # else |
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170 | # undef EV_USE_SIGNALFD |
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171 | # define EV_USE_SIGNALFD 0 |
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172 | # endif |
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173 | |
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174 | # if HAVE_EVENTFD |
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175 | # ifndef EV_USE_EVENTFD |
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176 | # define EV_USE_EVENTFD EV_FEATURE_OS |
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177 | # endif |
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178 | # else |
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179 | # undef EV_USE_EVENTFD |
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180 | # define EV_USE_EVENTFD 0 |
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181 | # endif |
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182 | |
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183 | # if HAVE_SYS_TIMERFD_H |
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184 | # ifndef EV_USE_TIMERFD |
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185 | # define EV_USE_TIMERFD EV_FEATURE_OS |
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186 | # endif |
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187 | # else |
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188 | # undef EV_USE_TIMERFD |
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189 | # define EV_USE_TIMERFD 0 |
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190 | # endif |
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191 | |
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192 | #endif |
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193 | |
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194 | /* OS X, in its infinite idiocy, actually HARDCODES |
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195 | * a limit of 1024 into their select. Where people have brains, |
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196 | * OS X engineers apparently have a vacuum. Or maybe they were |
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197 | * ordered to have a vacuum, or they do anything for money. |
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198 | * This might help. Or not. |
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199 | * Note that this must be defined early, as other include files |
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200 | * will rely on this define as well. |
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201 | */ |
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202 | #define _DARWIN_UNLIMITED_SELECT 1 |
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203 | |
67 | #include <stdlib.h> |
204 | #include <stdlib.h> |
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205 | #include <string.h> |
68 | #include <fcntl.h> |
206 | #include <fcntl.h> |
69 | #include <stddef.h> |
207 | #include <stddef.h> |
70 | |
208 | |
71 | #include <stdio.h> |
209 | #include <stdio.h> |
72 | |
210 | |
73 | #include <assert.h> |
211 | #include <assert.h> |
74 | #include <errno.h> |
212 | #include <errno.h> |
75 | #include <sys/types.h> |
213 | #include <sys/types.h> |
76 | #include <time.h> |
214 | #include <time.h> |
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215 | #include <limits.h> |
77 | |
216 | |
78 | #include <signal.h> |
217 | #include <signal.h> |
79 | |
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80 | #ifndef WIN32 |
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81 | # include <unistd.h> |
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82 | # include <sys/time.h> |
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83 | # include <sys/wait.h> |
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84 | #endif |
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85 | /**/ |
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86 | |
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87 | #ifndef EV_USE_MONOTONIC |
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88 | # define EV_USE_MONOTONIC 1 |
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89 | #endif |
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90 | |
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91 | #ifndef EV_USE_SELECT |
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92 | # define EV_USE_SELECT 1 |
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93 | #endif |
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94 | |
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95 | #ifndef EV_USE_POLL |
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96 | # define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ |
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97 | #endif |
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98 | |
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99 | #ifndef EV_USE_EPOLL |
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100 | # define EV_USE_EPOLL 0 |
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101 | #endif |
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102 | |
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103 | #ifndef EV_USE_KQUEUE |
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104 | # define EV_USE_KQUEUE 0 |
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105 | #endif |
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106 | |
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107 | #ifndef EV_USE_WIN32 |
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108 | # ifdef WIN32 |
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109 | # define EV_USE_WIN32 0 /* it does not exist, use select */ |
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110 | # undef EV_USE_SELECT |
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111 | # define EV_USE_SELECT 1 |
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112 | # else |
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113 | # define EV_USE_WIN32 0 |
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114 | # endif |
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115 | #endif |
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116 | |
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117 | #ifndef EV_USE_REALTIME |
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118 | # define EV_USE_REALTIME 1 |
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119 | #endif |
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120 | |
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121 | /**/ |
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122 | |
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123 | #ifndef CLOCK_MONOTONIC |
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124 | # undef EV_USE_MONOTONIC |
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125 | # define EV_USE_MONOTONIC 0 |
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126 | #endif |
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127 | |
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128 | #ifndef CLOCK_REALTIME |
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129 | # undef EV_USE_REALTIME |
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130 | # define EV_USE_REALTIME 0 |
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131 | #endif |
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132 | |
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133 | /**/ |
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134 | |
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135 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
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136 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ |
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137 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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138 | /*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ |
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139 | |
218 | |
140 | #ifdef EV_H |
219 | #ifdef EV_H |
141 | # include EV_H |
220 | # include EV_H |
142 | #else |
221 | #else |
143 | # include "ev.h" |
222 | # include "ev.h" |
144 | #endif |
223 | #endif |
145 | |
224 | |
146 | #if __GNUC__ >= 3 |
225 | #if EV_NO_THREADS |
147 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
226 | # undef EV_NO_SMP |
148 | # define inline inline |
227 | # define EV_NO_SMP 1 |
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228 | # undef ECB_NO_THREADS |
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229 | # define ECB_NO_THREADS 1 |
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230 | #endif |
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231 | #if EV_NO_SMP |
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232 | # undef EV_NO_SMP |
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233 | # define ECB_NO_SMP 1 |
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234 | #endif |
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235 | |
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236 | #ifndef _WIN32 |
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237 | # include <sys/time.h> |
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238 | # include <sys/wait.h> |
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239 | # include <unistd.h> |
149 | #else |
240 | #else |
150 | # define expect(expr,value) (expr) |
241 | # include <io.h> |
151 | # define inline static |
242 | # define WIN32_LEAN_AND_MEAN |
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243 | # include <winsock2.h> |
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244 | # include <windows.h> |
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245 | # ifndef EV_SELECT_IS_WINSOCKET |
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246 | # define EV_SELECT_IS_WINSOCKET 1 |
152 | #endif |
247 | # endif |
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248 | # undef EV_AVOID_STDIO |
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249 | #endif |
153 | |
250 | |
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251 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
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252 | |
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253 | /* try to deduce the maximum number of signals on this platform */ |
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254 | #if defined EV_NSIG |
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255 | /* use what's provided */ |
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256 | #elif defined NSIG |
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257 | # define EV_NSIG (NSIG) |
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258 | #elif defined _NSIG |
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259 | # define EV_NSIG (_NSIG) |
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260 | #elif defined SIGMAX |
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261 | # define EV_NSIG (SIGMAX+1) |
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262 | #elif defined SIG_MAX |
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263 | # define EV_NSIG (SIG_MAX+1) |
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264 | #elif defined _SIG_MAX |
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265 | # define EV_NSIG (_SIG_MAX+1) |
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266 | #elif defined MAXSIG |
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267 | # define EV_NSIG (MAXSIG+1) |
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268 | #elif defined MAX_SIG |
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269 | # define EV_NSIG (MAX_SIG+1) |
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270 | #elif defined SIGARRAYSIZE |
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271 | # define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ |
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272 | #elif defined _sys_nsig |
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273 | # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
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274 | #else |
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275 | # define EV_NSIG (8 * sizeof (sigset_t) + 1) |
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276 | #endif |
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277 | |
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278 | #ifndef EV_USE_FLOOR |
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279 | # define EV_USE_FLOOR 0 |
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280 | #endif |
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281 | |
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282 | #ifndef EV_USE_CLOCK_SYSCALL |
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283 | # if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17 |
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284 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
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285 | # else |
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286 | # define EV_USE_CLOCK_SYSCALL 0 |
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287 | # endif |
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288 | #endif |
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289 | |
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290 | #if !(_POSIX_TIMERS > 0) |
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291 | # ifndef EV_USE_MONOTONIC |
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292 | # define EV_USE_MONOTONIC 0 |
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293 | # endif |
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294 | # ifndef EV_USE_REALTIME |
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295 | # define EV_USE_REALTIME 0 |
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296 | # endif |
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297 | #endif |
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298 | |
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299 | #ifndef EV_USE_MONOTONIC |
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300 | # if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 |
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301 | # define EV_USE_MONOTONIC EV_FEATURE_OS |
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302 | # else |
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303 | # define EV_USE_MONOTONIC 0 |
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304 | # endif |
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305 | #endif |
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306 | |
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307 | #ifndef EV_USE_REALTIME |
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308 | # define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL |
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309 | #endif |
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310 | |
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311 | #ifndef EV_USE_NANOSLEEP |
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312 | # if _POSIX_C_SOURCE >= 199309L |
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313 | # define EV_USE_NANOSLEEP EV_FEATURE_OS |
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314 | # else |
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315 | # define EV_USE_NANOSLEEP 0 |
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316 | # endif |
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317 | #endif |
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318 | |
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319 | #ifndef EV_USE_SELECT |
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320 | # define EV_USE_SELECT EV_FEATURE_BACKENDS |
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321 | #endif |
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322 | |
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323 | #ifndef EV_USE_POLL |
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324 | # ifdef _WIN32 |
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325 | # define EV_USE_POLL 0 |
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326 | # else |
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327 | # define EV_USE_POLL EV_FEATURE_BACKENDS |
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328 | # endif |
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329 | #endif |
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330 | |
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331 | #ifndef EV_USE_EPOLL |
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332 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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333 | # define EV_USE_EPOLL EV_FEATURE_BACKENDS |
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334 | # else |
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335 | # define EV_USE_EPOLL 0 |
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336 | # endif |
|
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337 | #endif |
|
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338 | |
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339 | #ifndef EV_USE_KQUEUE |
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340 | # define EV_USE_KQUEUE 0 |
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341 | #endif |
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342 | |
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343 | #ifndef EV_USE_PORT |
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344 | # define EV_USE_PORT 0 |
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345 | #endif |
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346 | |
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347 | #ifndef EV_USE_LINUXAIO |
|
|
348 | # if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */ |
|
|
349 | # define EV_USE_LINUXAIO 0 /* was: 1, always off by default */ |
|
|
350 | # else |
|
|
351 | # define EV_USE_LINUXAIO 0 |
|
|
352 | # endif |
|
|
353 | #endif |
|
|
354 | |
|
|
355 | #ifndef EV_USE_IOURING |
|
|
356 | # if __linux /* later checks might disable again */ |
|
|
357 | # define EV_USE_IOURING 1 |
|
|
358 | # else |
|
|
359 | # define EV_USE_IOURING 0 |
|
|
360 | # endif |
|
|
361 | #endif |
|
|
362 | |
|
|
363 | #ifndef EV_USE_INOTIFY |
|
|
364 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
|
|
365 | # define EV_USE_INOTIFY EV_FEATURE_OS |
|
|
366 | # else |
|
|
367 | # define EV_USE_INOTIFY 0 |
|
|
368 | # endif |
|
|
369 | #endif |
|
|
370 | |
|
|
371 | #ifndef EV_PID_HASHSIZE |
|
|
372 | # define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1 |
|
|
373 | #endif |
|
|
374 | |
|
|
375 | #ifndef EV_INOTIFY_HASHSIZE |
|
|
376 | # define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1 |
|
|
377 | #endif |
|
|
378 | |
|
|
379 | #ifndef EV_USE_EVENTFD |
|
|
380 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
|
|
381 | # define EV_USE_EVENTFD EV_FEATURE_OS |
|
|
382 | # else |
|
|
383 | # define EV_USE_EVENTFD 0 |
|
|
384 | # endif |
|
|
385 | #endif |
|
|
386 | |
|
|
387 | #ifndef EV_USE_SIGNALFD |
|
|
388 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
|
|
389 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
|
|
390 | # else |
|
|
391 | # define EV_USE_SIGNALFD 0 |
|
|
392 | # endif |
|
|
393 | #endif |
|
|
394 | |
|
|
395 | #ifndef EV_USE_TIMERFD |
|
|
396 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8)) |
|
|
397 | # define EV_USE_TIMERFD EV_FEATURE_OS |
|
|
398 | # else |
|
|
399 | # define EV_USE_TIMERFD 0 |
|
|
400 | # endif |
|
|
401 | #endif |
|
|
402 | |
|
|
403 | #if 0 /* debugging */ |
|
|
404 | # define EV_VERIFY 3 |
|
|
405 | # define EV_USE_4HEAP 1 |
|
|
406 | # define EV_HEAP_CACHE_AT 1 |
|
|
407 | #endif |
|
|
408 | |
|
|
409 | #ifndef EV_VERIFY |
|
|
410 | # define EV_VERIFY (EV_FEATURE_API ? 1 : 0) |
|
|
411 | #endif |
|
|
412 | |
|
|
413 | #ifndef EV_USE_4HEAP |
|
|
414 | # define EV_USE_4HEAP EV_FEATURE_DATA |
|
|
415 | #endif |
|
|
416 | |
|
|
417 | #ifndef EV_HEAP_CACHE_AT |
|
|
418 | # define EV_HEAP_CACHE_AT EV_FEATURE_DATA |
|
|
419 | #endif |
|
|
420 | |
|
|
421 | #ifdef __ANDROID__ |
|
|
422 | /* supposedly, android doesn't typedef fd_mask */ |
|
|
423 | # undef EV_USE_SELECT |
|
|
424 | # define EV_USE_SELECT 0 |
|
|
425 | /* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */ |
|
|
426 | # undef EV_USE_CLOCK_SYSCALL |
|
|
427 | # define EV_USE_CLOCK_SYSCALL 0 |
|
|
428 | #endif |
|
|
429 | |
|
|
430 | /* aix's poll.h seems to cause lots of trouble */ |
|
|
431 | #ifdef _AIX |
|
|
432 | /* AIX has a completely broken poll.h header */ |
|
|
433 | # undef EV_USE_POLL |
|
|
434 | # define EV_USE_POLL 0 |
|
|
435 | #endif |
|
|
436 | |
|
|
437 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
|
|
438 | /* which makes programs even slower. might work on other unices, too. */ |
|
|
439 | #if EV_USE_CLOCK_SYSCALL |
|
|
440 | # include <sys/syscall.h> |
|
|
441 | # ifdef SYS_clock_gettime |
|
|
442 | # define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
|
|
443 | # undef EV_USE_MONOTONIC |
|
|
444 | # define EV_USE_MONOTONIC 1 |
|
|
445 | # define EV_NEED_SYSCALL 1 |
|
|
446 | # else |
|
|
447 | # undef EV_USE_CLOCK_SYSCALL |
|
|
448 | # define EV_USE_CLOCK_SYSCALL 0 |
|
|
449 | # endif |
|
|
450 | #endif |
|
|
451 | |
|
|
452 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
|
|
453 | |
|
|
454 | #ifndef CLOCK_MONOTONIC |
|
|
455 | # undef EV_USE_MONOTONIC |
|
|
456 | # define EV_USE_MONOTONIC 0 |
|
|
457 | #endif |
|
|
458 | |
|
|
459 | #ifndef CLOCK_REALTIME |
|
|
460 | # undef EV_USE_REALTIME |
|
|
461 | # define EV_USE_REALTIME 0 |
|
|
462 | #endif |
|
|
463 | |
|
|
464 | #if !EV_STAT_ENABLE |
|
|
465 | # undef EV_USE_INOTIFY |
|
|
466 | # define EV_USE_INOTIFY 0 |
|
|
467 | #endif |
|
|
468 | |
|
|
469 | #if __linux && EV_USE_IOURING |
|
|
470 | # include <linux/version.h> |
|
|
471 | # if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0) |
|
|
472 | # undef EV_USE_IOURING |
|
|
473 | # define EV_USE_IOURING 0 |
|
|
474 | # endif |
|
|
475 | #endif |
|
|
476 | |
|
|
477 | #if !EV_USE_NANOSLEEP |
|
|
478 | /* hp-ux has it in sys/time.h, which we unconditionally include above */ |
|
|
479 | # if !defined _WIN32 && !defined __hpux |
|
|
480 | # include <sys/select.h> |
|
|
481 | # endif |
|
|
482 | #endif |
|
|
483 | |
|
|
484 | #if EV_USE_LINUXAIO |
|
|
485 | # include <sys/syscall.h> |
|
|
486 | # if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */ |
|
|
487 | # define EV_NEED_SYSCALL 1 |
|
|
488 | # else |
|
|
489 | # undef EV_USE_LINUXAIO |
|
|
490 | # define EV_USE_LINUXAIO 0 |
|
|
491 | # endif |
|
|
492 | #endif |
|
|
493 | |
|
|
494 | #if EV_USE_IOURING |
|
|
495 | # include <sys/syscall.h> |
|
|
496 | # if !SYS_io_uring_setup && __linux && !__alpha |
|
|
497 | # define SYS_io_uring_setup 425 |
|
|
498 | # define SYS_io_uring_enter 426 |
|
|
499 | # define SYS_io_uring_wregister 427 |
|
|
500 | # endif |
|
|
501 | # if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */ |
|
|
502 | # define EV_NEED_SYSCALL 1 |
|
|
503 | # else |
|
|
504 | # undef EV_USE_IOURING |
|
|
505 | # define EV_USE_IOURING 0 |
|
|
506 | # endif |
|
|
507 | #endif |
|
|
508 | |
|
|
509 | #if EV_USE_INOTIFY |
|
|
510 | # include <sys/statfs.h> |
|
|
511 | # include <sys/inotify.h> |
|
|
512 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
|
|
513 | # ifndef IN_DONT_FOLLOW |
|
|
514 | # undef EV_USE_INOTIFY |
|
|
515 | # define EV_USE_INOTIFY 0 |
|
|
516 | # endif |
|
|
517 | #endif |
|
|
518 | |
|
|
519 | #if EV_USE_EVENTFD |
|
|
520 | /* our minimum requirement is glibc 2.7 which has the stub, but not the full header */ |
|
|
521 | # include <stdint.h> |
|
|
522 | # ifndef EFD_NONBLOCK |
|
|
523 | # define EFD_NONBLOCK O_NONBLOCK |
|
|
524 | # endif |
|
|
525 | # ifndef EFD_CLOEXEC |
|
|
526 | # ifdef O_CLOEXEC |
|
|
527 | # define EFD_CLOEXEC O_CLOEXEC |
|
|
528 | # else |
|
|
529 | # define EFD_CLOEXEC 02000000 |
|
|
530 | # endif |
|
|
531 | # endif |
|
|
532 | EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); |
|
|
533 | #endif |
|
|
534 | |
|
|
535 | #if EV_USE_SIGNALFD |
|
|
536 | /* our minimum requirement is glibc 2.7 which has the stub, but not the full header */ |
|
|
537 | # include <stdint.h> |
|
|
538 | # ifndef SFD_NONBLOCK |
|
|
539 | # define SFD_NONBLOCK O_NONBLOCK |
|
|
540 | # endif |
|
|
541 | # ifndef SFD_CLOEXEC |
|
|
542 | # ifdef O_CLOEXEC |
|
|
543 | # define SFD_CLOEXEC O_CLOEXEC |
|
|
544 | # else |
|
|
545 | # define SFD_CLOEXEC 02000000 |
|
|
546 | # endif |
|
|
547 | # endif |
|
|
548 | EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags); |
|
|
549 | |
|
|
550 | struct signalfd_siginfo |
|
|
551 | { |
|
|
552 | uint32_t ssi_signo; |
|
|
553 | char pad[128 - sizeof (uint32_t)]; |
|
|
554 | }; |
|
|
555 | #endif |
|
|
556 | |
|
|
557 | /* for timerfd, libev core requires TFD_TIMER_CANCEL_ON_SET &c */ |
|
|
558 | #if EV_USE_TIMERFD |
|
|
559 | # include <sys/timerfd.h> |
|
|
560 | /* timerfd is only used for periodics */ |
|
|
561 | # if !(defined (TFD_TIMER_CANCEL_ON_SET) && defined (TFD_CLOEXEC) && defined (TFD_NONBLOCK)) || !EV_PERIODIC_ENABLE |
|
|
562 | # undef EV_USE_TIMERFD |
|
|
563 | # define EV_USE_TIMERFD 0 |
|
|
564 | # endif |
|
|
565 | #endif |
|
|
566 | |
|
|
567 | /*****************************************************************************/ |
|
|
568 | |
|
|
569 | #if EV_VERIFY >= 3 |
|
|
570 | # define EV_FREQUENT_CHECK ev_verify (EV_A) |
|
|
571 | #else |
|
|
572 | # define EV_FREQUENT_CHECK do { } while (0) |
|
|
573 | #endif |
|
|
574 | |
|
|
575 | /* |
|
|
576 | * This is used to work around floating point rounding problems. |
|
|
577 | * This value is good at least till the year 4000. |
|
|
578 | */ |
|
|
579 | #define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ |
|
|
580 | /*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ |
|
|
581 | |
|
|
582 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
|
|
583 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
|
|
584 | |
|
|
585 | /* find a portable timestamp that is "always" in the future but fits into time_t. |
|
|
586 | * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t, |
|
|
587 | * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */ |
|
|
588 | #define EV_TSTAMP_HUGE \ |
|
|
589 | (sizeof (time_t) >= 8 ? 10000000000000. \ |
|
|
590 | : 0 < (time_t)4294967295 ? 4294967295. \ |
|
|
591 | : 2147483647.) \ |
|
|
592 | |
|
|
593 | #ifndef EV_TS_CONST |
|
|
594 | # define EV_TS_CONST(nv) nv |
|
|
595 | # define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999 |
|
|
596 | # define EV_TS_FROM_USEC(us) us * 1e-6 |
|
|
597 | # define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) |
|
|
598 | # define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) |
|
|
599 | # define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6) |
|
|
600 | # define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9) |
|
|
601 | #endif |
|
|
602 | |
|
|
603 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
|
|
604 | /* ECB.H BEGIN */ |
|
|
605 | /* |
|
|
606 | * libecb - http://software.schmorp.de/pkg/libecb |
|
|
607 | * |
|
|
608 | * Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de> |
|
|
609 | * Copyright (©) 2011 Emanuele Giaquinta |
|
|
610 | * All rights reserved. |
|
|
611 | * |
|
|
612 | * Redistribution and use in source and binary forms, with or without modifica- |
|
|
613 | * tion, are permitted provided that the following conditions are met: |
|
|
614 | * |
|
|
615 | * 1. Redistributions of source code must retain the above copyright notice, |
|
|
616 | * this list of conditions and the following disclaimer. |
|
|
617 | * |
|
|
618 | * 2. Redistributions in binary form must reproduce the above copyright |
|
|
619 | * notice, this list of conditions and the following disclaimer in the |
|
|
620 | * documentation and/or other materials provided with the distribution. |
|
|
621 | * |
|
|
622 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
|
|
623 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
|
|
624 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
|
|
625 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
|
|
626 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
|
|
627 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
|
|
628 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
|
|
629 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
|
|
630 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
|
|
631 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
|
|
632 | * |
|
|
633 | * Alternatively, the contents of this file may be used under the terms of |
|
|
634 | * the GNU General Public License ("GPL") version 2 or any later version, |
|
|
635 | * in which case the provisions of the GPL are applicable instead of |
|
|
636 | * the above. If you wish to allow the use of your version of this file |
|
|
637 | * only under the terms of the GPL and not to allow others to use your |
|
|
638 | * version of this file under the BSD license, indicate your decision |
|
|
639 | * by deleting the provisions above and replace them with the notice |
|
|
640 | * and other provisions required by the GPL. If you do not delete the |
|
|
641 | * provisions above, a recipient may use your version of this file under |
|
|
642 | * either the BSD or the GPL. |
|
|
643 | */ |
|
|
644 | |
|
|
645 | #ifndef ECB_H |
|
|
646 | #define ECB_H |
|
|
647 | |
|
|
648 | /* 16 bits major, 16 bits minor */ |
|
|
649 | #define ECB_VERSION 0x00010006 |
|
|
650 | |
|
|
651 | #ifdef _WIN32 |
|
|
652 | typedef signed char int8_t; |
|
|
653 | typedef unsigned char uint8_t; |
|
|
654 | typedef signed short int16_t; |
|
|
655 | typedef unsigned short uint16_t; |
|
|
656 | typedef signed int int32_t; |
|
|
657 | typedef unsigned int uint32_t; |
|
|
658 | #if __GNUC__ |
|
|
659 | typedef signed long long int64_t; |
|
|
660 | typedef unsigned long long uint64_t; |
|
|
661 | #else /* _MSC_VER || __BORLANDC__ */ |
|
|
662 | typedef signed __int64 int64_t; |
|
|
663 | typedef unsigned __int64 uint64_t; |
|
|
664 | #endif |
|
|
665 | #ifdef _WIN64 |
|
|
666 | #define ECB_PTRSIZE 8 |
|
|
667 | typedef uint64_t uintptr_t; |
|
|
668 | typedef int64_t intptr_t; |
|
|
669 | #else |
|
|
670 | #define ECB_PTRSIZE 4 |
|
|
671 | typedef uint32_t uintptr_t; |
|
|
672 | typedef int32_t intptr_t; |
|
|
673 | #endif |
|
|
674 | #else |
|
|
675 | #include <inttypes.h> |
|
|
676 | #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU |
|
|
677 | #define ECB_PTRSIZE 8 |
|
|
678 | #else |
|
|
679 | #define ECB_PTRSIZE 4 |
|
|
680 | #endif |
|
|
681 | #endif |
|
|
682 | |
|
|
683 | #define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__) |
|
|
684 | #define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64) |
|
|
685 | |
|
|
686 | /* work around x32 idiocy by defining proper macros */ |
|
|
687 | #if ECB_GCC_AMD64 || ECB_MSVC_AMD64 |
|
|
688 | #if _ILP32 |
|
|
689 | #define ECB_AMD64_X32 1 |
|
|
690 | #else |
|
|
691 | #define ECB_AMD64 1 |
|
|
692 | #endif |
|
|
693 | #endif |
|
|
694 | |
|
|
695 | /* many compilers define _GNUC_ to some versions but then only implement |
|
|
696 | * what their idiot authors think are the "more important" extensions, |
|
|
697 | * causing enormous grief in return for some better fake benchmark numbers. |
|
|
698 | * or so. |
|
|
699 | * we try to detect these and simply assume they are not gcc - if they have |
|
|
700 | * an issue with that they should have done it right in the first place. |
|
|
701 | */ |
|
|
702 | #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ |
|
|
703 | #define ECB_GCC_VERSION(major,minor) 0 |
|
|
704 | #else |
|
|
705 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
|
|
706 | #endif |
|
|
707 | |
|
|
708 | #define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor))) |
|
|
709 | |
|
|
710 | #if __clang__ && defined __has_builtin |
|
|
711 | #define ECB_CLANG_BUILTIN(x) __has_builtin (x) |
|
|
712 | #else |
|
|
713 | #define ECB_CLANG_BUILTIN(x) 0 |
|
|
714 | #endif |
|
|
715 | |
|
|
716 | #if __clang__ && defined __has_extension |
|
|
717 | #define ECB_CLANG_EXTENSION(x) __has_extension (x) |
|
|
718 | #else |
|
|
719 | #define ECB_CLANG_EXTENSION(x) 0 |
|
|
720 | #endif |
|
|
721 | |
|
|
722 | #define ECB_CPP (__cplusplus+0) |
|
|
723 | #define ECB_CPP11 (__cplusplus >= 201103L) |
|
|
724 | #define ECB_CPP14 (__cplusplus >= 201402L) |
|
|
725 | #define ECB_CPP17 (__cplusplus >= 201703L) |
|
|
726 | |
|
|
727 | #if ECB_CPP |
|
|
728 | #define ECB_C 0 |
|
|
729 | #define ECB_STDC_VERSION 0 |
|
|
730 | #else |
|
|
731 | #define ECB_C 1 |
|
|
732 | #define ECB_STDC_VERSION __STDC_VERSION__ |
|
|
733 | #endif |
|
|
734 | |
|
|
735 | #define ECB_C99 (ECB_STDC_VERSION >= 199901L) |
|
|
736 | #define ECB_C11 (ECB_STDC_VERSION >= 201112L) |
|
|
737 | #define ECB_C17 (ECB_STDC_VERSION >= 201710L) |
|
|
738 | |
|
|
739 | #if ECB_CPP |
|
|
740 | #define ECB_EXTERN_C extern "C" |
|
|
741 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
|
|
742 | #define ECB_EXTERN_C_END } |
|
|
743 | #else |
|
|
744 | #define ECB_EXTERN_C extern |
|
|
745 | #define ECB_EXTERN_C_BEG |
|
|
746 | #define ECB_EXTERN_C_END |
|
|
747 | #endif |
|
|
748 | |
|
|
749 | /*****************************************************************************/ |
|
|
750 | |
|
|
751 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
|
|
752 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
|
|
753 | |
|
|
754 | #if ECB_NO_THREADS |
|
|
755 | #define ECB_NO_SMP 1 |
|
|
756 | #endif |
|
|
757 | |
|
|
758 | #if ECB_NO_SMP |
|
|
759 | #define ECB_MEMORY_FENCE do { } while (0) |
|
|
760 | #endif |
|
|
761 | |
|
|
762 | /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */ |
|
|
763 | #if __xlC__ && ECB_CPP |
|
|
764 | #include <builtins.h> |
|
|
765 | #endif |
|
|
766 | |
|
|
767 | #if 1400 <= _MSC_VER |
|
|
768 | #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */ |
|
|
769 | #endif |
|
|
770 | |
|
|
771 | #ifndef ECB_MEMORY_FENCE |
|
|
772 | #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
|
|
773 | #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory") |
|
|
774 | #if __i386 || __i386__ |
|
|
775 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
|
|
776 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
|
|
777 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory") |
|
|
778 | #elif ECB_GCC_AMD64 |
|
|
779 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
|
|
780 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
|
|
781 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory") |
|
|
782 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
|
|
783 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
|
|
784 | #elif defined __ARM_ARCH_2__ \ |
|
|
785 | || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \ |
|
|
786 | || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \ |
|
|
787 | || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \ |
|
|
788 | || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \ |
|
|
789 | || defined __ARM_ARCH_5TEJ__ |
|
|
790 | /* should not need any, unless running old code on newer cpu - arm doesn't support that */ |
|
|
791 | #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ |
|
|
792 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \ |
|
|
793 | || defined __ARM_ARCH_6T2__ |
|
|
794 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
|
|
795 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
|
|
796 | || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__ |
|
|
797 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
|
|
798 | #elif __aarch64__ |
|
|
799 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") |
|
|
800 | #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8) |
|
|
801 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") |
|
|
802 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
|
|
803 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
|
|
804 | #elif defined __s390__ || defined __s390x__ |
|
|
805 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
|
|
806 | #elif defined __mips__ |
|
|
807 | /* GNU/Linux emulates sync on mips1 architectures, so we force its use */ |
|
|
808 | /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */ |
|
|
809 | #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory") |
|
|
810 | #elif defined __alpha__ |
|
|
811 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") |
|
|
812 | #elif defined __hppa__ |
|
|
813 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
814 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
|
|
815 | #elif defined __ia64__ |
|
|
816 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") |
|
|
817 | #elif defined __m68k__ |
|
|
818 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
819 | #elif defined __m88k__ |
|
|
820 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory") |
|
|
821 | #elif defined __sh__ |
|
|
822 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
823 | #endif |
|
|
824 | #endif |
|
|
825 | #endif |
|
|
826 | |
|
|
827 | #ifndef ECB_MEMORY_FENCE |
|
|
828 | #if ECB_GCC_VERSION(4,7) |
|
|
829 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
|
|
830 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
831 | #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) |
|
|
832 | #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) |
|
|
833 | #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED) |
|
|
834 | |
|
|
835 | #elif ECB_CLANG_EXTENSION(c_atomic) |
|
|
836 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
|
|
837 | #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
838 | #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) |
|
|
839 | #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) |
|
|
840 | #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED) |
|
|
841 | |
|
|
842 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
|
|
843 | #define ECB_MEMORY_FENCE __sync_synchronize () |
|
|
844 | #elif _MSC_VER >= 1500 /* VC++ 2008 */ |
|
|
845 | /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ |
|
|
846 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
|
|
847 | #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier() |
|
|
848 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */ |
|
|
849 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier() |
|
|
850 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
|
|
851 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
|
|
852 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
|
|
853 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
|
|
854 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
|
|
855 | #elif defined _WIN32 |
|
|
856 | #include <WinNT.h> |
|
|
857 | #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
|
|
858 | #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
|
|
859 | #include <mbarrier.h> |
|
|
860 | #define ECB_MEMORY_FENCE __machine_rw_barrier () |
|
|
861 | #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier () |
|
|
862 | #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier () |
|
|
863 | #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier () |
|
|
864 | #elif __xlC__ |
|
|
865 | #define ECB_MEMORY_FENCE __sync () |
|
|
866 | #endif |
|
|
867 | #endif |
|
|
868 | |
|
|
869 | #ifndef ECB_MEMORY_FENCE |
|
|
870 | #if ECB_C11 && !defined __STDC_NO_ATOMICS__ |
|
|
871 | /* we assume that these memory fences work on all variables/all memory accesses, */ |
|
|
872 | /* not just C11 atomics and atomic accesses */ |
|
|
873 | #include <stdatomic.h> |
|
|
874 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
|
|
875 | #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire) |
|
|
876 | #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release) |
|
|
877 | #endif |
|
|
878 | #endif |
|
|
879 | |
|
|
880 | #ifndef ECB_MEMORY_FENCE |
|
|
881 | #if !ECB_AVOID_PTHREADS |
|
|
882 | /* |
|
|
883 | * if you get undefined symbol references to pthread_mutex_lock, |
|
|
884 | * or failure to find pthread.h, then you should implement |
|
|
885 | * the ECB_MEMORY_FENCE operations for your cpu/compiler |
|
|
886 | * OR provide pthread.h and link against the posix thread library |
|
|
887 | * of your system. |
|
|
888 | */ |
|
|
889 | #include <pthread.h> |
|
|
890 | #define ECB_NEEDS_PTHREADS 1 |
|
|
891 | #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1 |
|
|
892 | |
|
|
893 | static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; |
|
|
894 | #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) |
|
|
895 | #endif |
|
|
896 | #endif |
|
|
897 | |
|
|
898 | #if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE |
|
|
899 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
900 | #endif |
|
|
901 | |
|
|
902 | #if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE |
|
|
903 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
904 | #endif |
|
|
905 | |
|
|
906 | #if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE |
|
|
907 | #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */ |
|
|
908 | #endif |
|
|
909 | |
|
|
910 | /*****************************************************************************/ |
|
|
911 | |
|
|
912 | #if ECB_CPP |
|
|
913 | #define ecb_inline static inline |
|
|
914 | #elif ECB_GCC_VERSION(2,5) |
|
|
915 | #define ecb_inline static __inline__ |
|
|
916 | #elif ECB_C99 |
|
|
917 | #define ecb_inline static inline |
|
|
918 | #else |
|
|
919 | #define ecb_inline static |
|
|
920 | #endif |
|
|
921 | |
|
|
922 | #if ECB_GCC_VERSION(3,3) |
|
|
923 | #define ecb_restrict __restrict__ |
|
|
924 | #elif ECB_C99 |
|
|
925 | #define ecb_restrict restrict |
|
|
926 | #else |
|
|
927 | #define ecb_restrict |
|
|
928 | #endif |
|
|
929 | |
|
|
930 | typedef int ecb_bool; |
|
|
931 | |
|
|
932 | #define ECB_CONCAT_(a, b) a ## b |
|
|
933 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
|
|
934 | #define ECB_STRINGIFY_(a) # a |
|
|
935 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
|
|
936 | #define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr)) |
|
|
937 | |
|
|
938 | #define ecb_function_ ecb_inline |
|
|
939 | |
|
|
940 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8) |
|
|
941 | #define ecb_attribute(attrlist) __attribute__ (attrlist) |
|
|
942 | #else |
|
|
943 | #define ecb_attribute(attrlist) |
|
|
944 | #endif |
|
|
945 | |
|
|
946 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p) |
|
|
947 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
|
|
948 | #else |
|
|
949 | /* possible C11 impl for integral types |
|
|
950 | typedef struct ecb_is_constant_struct ecb_is_constant_struct; |
|
|
951 | #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */ |
|
|
952 | |
|
|
953 | #define ecb_is_constant(expr) 0 |
|
|
954 | #endif |
|
|
955 | |
|
|
956 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect) |
|
|
957 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
|
|
958 | #else |
|
|
959 | #define ecb_expect(expr,value) (expr) |
|
|
960 | #endif |
|
|
961 | |
|
|
962 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch) |
|
|
963 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
|
|
964 | #else |
|
|
965 | #define ecb_prefetch(addr,rw,locality) |
|
|
966 | #endif |
|
|
967 | |
|
|
968 | /* no emulation for ecb_decltype */ |
|
|
969 | #if ECB_CPP11 |
|
|
970 | // older implementations might have problems with decltype(x)::type, work around it |
|
|
971 | template<class T> struct ecb_decltype_t { typedef T type; }; |
|
|
972 | #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type |
|
|
973 | #elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8) |
|
|
974 | #define ecb_decltype(x) __typeof__ (x) |
|
|
975 | #endif |
|
|
976 | |
|
|
977 | #if _MSC_VER >= 1300 |
|
|
978 | #define ecb_deprecated __declspec (deprecated) |
|
|
979 | #else |
|
|
980 | #define ecb_deprecated ecb_attribute ((__deprecated__)) |
|
|
981 | #endif |
|
|
982 | |
|
|
983 | #if _MSC_VER >= 1500 |
|
|
984 | #define ecb_deprecated_message(msg) __declspec (deprecated (msg)) |
|
|
985 | #elif ECB_GCC_VERSION(4,5) |
|
|
986 | #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg)) |
|
|
987 | #else |
|
|
988 | #define ecb_deprecated_message(msg) ecb_deprecated |
|
|
989 | #endif |
|
|
990 | |
|
|
991 | #if _MSC_VER >= 1400 |
|
|
992 | #define ecb_noinline __declspec (noinline) |
|
|
993 | #else |
|
|
994 | #define ecb_noinline ecb_attribute ((__noinline__)) |
|
|
995 | #endif |
|
|
996 | |
|
|
997 | #define ecb_unused ecb_attribute ((__unused__)) |
|
|
998 | #define ecb_const ecb_attribute ((__const__)) |
|
|
999 | #define ecb_pure ecb_attribute ((__pure__)) |
|
|
1000 | |
|
|
1001 | #if ECB_C11 || __IBMC_NORETURN |
|
|
1002 | /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */ |
|
|
1003 | #define ecb_noreturn _Noreturn |
|
|
1004 | #elif ECB_CPP11 |
|
|
1005 | #define ecb_noreturn [[noreturn]] |
|
|
1006 | #elif _MSC_VER >= 1200 |
|
|
1007 | /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */ |
|
|
1008 | #define ecb_noreturn __declspec (noreturn) |
|
|
1009 | #else |
|
|
1010 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
|
|
1011 | #endif |
|
|
1012 | |
|
|
1013 | #if ECB_GCC_VERSION(4,3) |
|
|
1014 | #define ecb_artificial ecb_attribute ((__artificial__)) |
|
|
1015 | #define ecb_hot ecb_attribute ((__hot__)) |
|
|
1016 | #define ecb_cold ecb_attribute ((__cold__)) |
|
|
1017 | #else |
|
|
1018 | #define ecb_artificial |
|
|
1019 | #define ecb_hot |
|
|
1020 | #define ecb_cold |
|
|
1021 | #endif |
|
|
1022 | |
|
|
1023 | /* put around conditional expressions if you are very sure that the */ |
|
|
1024 | /* expression is mostly true or mostly false. note that these return */ |
|
|
1025 | /* booleans, not the expression. */ |
154 | #define expect_false(expr) expect ((expr) != 0, 0) |
1026 | #define ecb_expect_false(expr) ecb_expect (!!(expr), 0) |
155 | #define expect_true(expr) expect ((expr) != 0, 1) |
1027 | #define ecb_expect_true(expr) ecb_expect (!!(expr), 1) |
|
|
1028 | /* for compatibility to the rest of the world */ |
|
|
1029 | #define ecb_likely(expr) ecb_expect_true (expr) |
|
|
1030 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
156 | |
1031 | |
|
|
1032 | /* count trailing zero bits and count # of one bits */ |
|
|
1033 | #if ECB_GCC_VERSION(3,4) \ |
|
|
1034 | || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \ |
|
|
1035 | && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \ |
|
|
1036 | && ECB_CLANG_BUILTIN(__builtin_popcount)) |
|
|
1037 | /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ |
|
|
1038 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
|
|
1039 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
|
|
1040 | #define ecb_ctz32(x) __builtin_ctz (x) |
|
|
1041 | #define ecb_ctz64(x) __builtin_ctzll (x) |
|
|
1042 | #define ecb_popcount32(x) __builtin_popcount (x) |
|
|
1043 | /* no popcountll */ |
|
|
1044 | #else |
|
|
1045 | ecb_function_ ecb_const int ecb_ctz32 (uint32_t x); |
|
|
1046 | ecb_function_ ecb_const int |
|
|
1047 | ecb_ctz32 (uint32_t x) |
|
|
1048 | { |
|
|
1049 | #if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM) |
|
|
1050 | unsigned long r; |
|
|
1051 | _BitScanForward (&r, x); |
|
|
1052 | return (int)r; |
|
|
1053 | #else |
|
|
1054 | int r = 0; |
|
|
1055 | |
|
|
1056 | x &= ~x + 1; /* this isolates the lowest bit */ |
|
|
1057 | |
|
|
1058 | #if ECB_branchless_on_i386 |
|
|
1059 | r += !!(x & 0xaaaaaaaa) << 0; |
|
|
1060 | r += !!(x & 0xcccccccc) << 1; |
|
|
1061 | r += !!(x & 0xf0f0f0f0) << 2; |
|
|
1062 | r += !!(x & 0xff00ff00) << 3; |
|
|
1063 | r += !!(x & 0xffff0000) << 4; |
|
|
1064 | #else |
|
|
1065 | if (x & 0xaaaaaaaa) r += 1; |
|
|
1066 | if (x & 0xcccccccc) r += 2; |
|
|
1067 | if (x & 0xf0f0f0f0) r += 4; |
|
|
1068 | if (x & 0xff00ff00) r += 8; |
|
|
1069 | if (x & 0xffff0000) r += 16; |
|
|
1070 | #endif |
|
|
1071 | |
|
|
1072 | return r; |
|
|
1073 | #endif |
|
|
1074 | } |
|
|
1075 | |
|
|
1076 | ecb_function_ ecb_const int ecb_ctz64 (uint64_t x); |
|
|
1077 | ecb_function_ ecb_const int |
|
|
1078 | ecb_ctz64 (uint64_t x) |
|
|
1079 | { |
|
|
1080 | #if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM) |
|
|
1081 | unsigned long r; |
|
|
1082 | _BitScanForward64 (&r, x); |
|
|
1083 | return (int)r; |
|
|
1084 | #else |
|
|
1085 | int shift = x & 0xffffffff ? 0 : 32; |
|
|
1086 | return ecb_ctz32 (x >> shift) + shift; |
|
|
1087 | #endif |
|
|
1088 | } |
|
|
1089 | |
|
|
1090 | ecb_function_ ecb_const int ecb_popcount32 (uint32_t x); |
|
|
1091 | ecb_function_ ecb_const int |
|
|
1092 | ecb_popcount32 (uint32_t x) |
|
|
1093 | { |
|
|
1094 | x -= (x >> 1) & 0x55555555; |
|
|
1095 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
|
|
1096 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
|
|
1097 | x *= 0x01010101; |
|
|
1098 | |
|
|
1099 | return x >> 24; |
|
|
1100 | } |
|
|
1101 | |
|
|
1102 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x); |
|
|
1103 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x) |
|
|
1104 | { |
|
|
1105 | #if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM) |
|
|
1106 | unsigned long r; |
|
|
1107 | _BitScanReverse (&r, x); |
|
|
1108 | return (int)r; |
|
|
1109 | #else |
|
|
1110 | int r = 0; |
|
|
1111 | |
|
|
1112 | if (x >> 16) { x >>= 16; r += 16; } |
|
|
1113 | if (x >> 8) { x >>= 8; r += 8; } |
|
|
1114 | if (x >> 4) { x >>= 4; r += 4; } |
|
|
1115 | if (x >> 2) { x >>= 2; r += 2; } |
|
|
1116 | if (x >> 1) { r += 1; } |
|
|
1117 | |
|
|
1118 | return r; |
|
|
1119 | #endif |
|
|
1120 | } |
|
|
1121 | |
|
|
1122 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x); |
|
|
1123 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x) |
|
|
1124 | { |
|
|
1125 | #if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM) |
|
|
1126 | unsigned long r; |
|
|
1127 | _BitScanReverse64 (&r, x); |
|
|
1128 | return (int)r; |
|
|
1129 | #else |
|
|
1130 | int r = 0; |
|
|
1131 | |
|
|
1132 | if (x >> 32) { x >>= 32; r += 32; } |
|
|
1133 | |
|
|
1134 | return r + ecb_ld32 (x); |
|
|
1135 | #endif |
|
|
1136 | } |
|
|
1137 | #endif |
|
|
1138 | |
|
|
1139 | ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x); |
|
|
1140 | ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } |
|
|
1141 | ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x); |
|
|
1142 | ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } |
|
|
1143 | |
|
|
1144 | ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x); |
|
|
1145 | ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x) |
|
|
1146 | { |
|
|
1147 | return ( (x * 0x0802U & 0x22110U) |
|
|
1148 | | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |
|
|
1149 | } |
|
|
1150 | |
|
|
1151 | ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x); |
|
|
1152 | ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x) |
|
|
1153 | { |
|
|
1154 | x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); |
|
|
1155 | x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); |
|
|
1156 | x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); |
|
|
1157 | x = ( x >> 8 ) | ( x << 8); |
|
|
1158 | |
|
|
1159 | return x; |
|
|
1160 | } |
|
|
1161 | |
|
|
1162 | ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x); |
|
|
1163 | ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x) |
|
|
1164 | { |
|
|
1165 | x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); |
|
|
1166 | x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); |
|
|
1167 | x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); |
|
|
1168 | x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); |
|
|
1169 | x = ( x >> 16 ) | ( x << 16); |
|
|
1170 | |
|
|
1171 | return x; |
|
|
1172 | } |
|
|
1173 | |
|
|
1174 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
|
|
1175 | /* so for this version we are lazy */ |
|
|
1176 | ecb_function_ ecb_const int ecb_popcount64 (uint64_t x); |
|
|
1177 | ecb_function_ ecb_const int |
|
|
1178 | ecb_popcount64 (uint64_t x) |
|
|
1179 | { |
|
|
1180 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
|
|
1181 | } |
|
|
1182 | |
|
|
1183 | ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count); |
|
|
1184 | ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count); |
|
|
1185 | ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count); |
|
|
1186 | ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count); |
|
|
1187 | ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count); |
|
|
1188 | ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count); |
|
|
1189 | ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count); |
|
|
1190 | ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count); |
|
|
1191 | |
|
|
1192 | ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } |
|
|
1193 | ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } |
|
|
1194 | ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } |
|
|
1195 | ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } |
|
|
1196 | ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
|
|
1197 | ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
|
|
1198 | ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
|
|
1199 | ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
|
|
1200 | |
|
|
1201 | #if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64)) |
|
|
1202 | #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16) |
|
|
1203 | #define ecb_bswap16(x) __builtin_bswap16 (x) |
|
|
1204 | #else |
|
|
1205 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
|
|
1206 | #endif |
|
|
1207 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
|
|
1208 | #define ecb_bswap64(x) __builtin_bswap64 (x) |
|
|
1209 | #elif _MSC_VER |
|
|
1210 | #include <stdlib.h> |
|
|
1211 | #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x))) |
|
|
1212 | #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x))) |
|
|
1213 | #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x))) |
|
|
1214 | #else |
|
|
1215 | ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x); |
|
|
1216 | ecb_function_ ecb_const uint16_t |
|
|
1217 | ecb_bswap16 (uint16_t x) |
|
|
1218 | { |
|
|
1219 | return ecb_rotl16 (x, 8); |
|
|
1220 | } |
|
|
1221 | |
|
|
1222 | ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x); |
|
|
1223 | ecb_function_ ecb_const uint32_t |
|
|
1224 | ecb_bswap32 (uint32_t x) |
|
|
1225 | { |
|
|
1226 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
|
|
1227 | } |
|
|
1228 | |
|
|
1229 | ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x); |
|
|
1230 | ecb_function_ ecb_const uint64_t |
|
|
1231 | ecb_bswap64 (uint64_t x) |
|
|
1232 | { |
|
|
1233 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
|
|
1234 | } |
|
|
1235 | #endif |
|
|
1236 | |
|
|
1237 | #if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable) |
|
|
1238 | #define ecb_unreachable() __builtin_unreachable () |
|
|
1239 | #else |
|
|
1240 | /* this seems to work fine, but gcc always emits a warning for it :/ */ |
|
|
1241 | ecb_inline ecb_noreturn void ecb_unreachable (void); |
|
|
1242 | ecb_inline ecb_noreturn void ecb_unreachable (void) { } |
|
|
1243 | #endif |
|
|
1244 | |
|
|
1245 | /* try to tell the compiler that some condition is definitely true */ |
|
|
1246 | #define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 |
|
|
1247 | |
|
|
1248 | ecb_inline ecb_const uint32_t ecb_byteorder_helper (void); |
|
|
1249 | ecb_inline ecb_const uint32_t |
|
|
1250 | ecb_byteorder_helper (void) |
|
|
1251 | { |
|
|
1252 | /* the union code still generates code under pressure in gcc, */ |
|
|
1253 | /* but less than using pointers, and always seems to */ |
|
|
1254 | /* successfully return a constant. */ |
|
|
1255 | /* the reason why we have this horrible preprocessor mess */ |
|
|
1256 | /* is to avoid it in all cases, at least on common architectures */ |
|
|
1257 | /* or when using a recent enough gcc version (>= 4.6) */ |
|
|
1258 | #if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \ |
|
|
1259 | || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__) |
|
|
1260 | #define ECB_LITTLE_ENDIAN 1 |
|
|
1261 | return 0x44332211; |
|
|
1262 | #elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \ |
|
|
1263 | || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__) |
|
|
1264 | #define ECB_BIG_ENDIAN 1 |
|
|
1265 | return 0x11223344; |
|
|
1266 | #else |
|
|
1267 | union |
|
|
1268 | { |
|
|
1269 | uint8_t c[4]; |
|
|
1270 | uint32_t u; |
|
|
1271 | } u = { 0x11, 0x22, 0x33, 0x44 }; |
|
|
1272 | return u.u; |
|
|
1273 | #endif |
|
|
1274 | } |
|
|
1275 | |
|
|
1276 | ecb_inline ecb_const ecb_bool ecb_big_endian (void); |
|
|
1277 | ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; } |
|
|
1278 | ecb_inline ecb_const ecb_bool ecb_little_endian (void); |
|
|
1279 | ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; } |
|
|
1280 | |
|
|
1281 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
|
|
1282 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
|
|
1283 | #else |
|
|
1284 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
|
|
1285 | #endif |
|
|
1286 | |
|
|
1287 | #if ECB_CPP |
|
|
1288 | template<typename T> |
|
|
1289 | static inline T ecb_div_rd (T val, T div) |
|
|
1290 | { |
|
|
1291 | return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; |
|
|
1292 | } |
|
|
1293 | template<typename T> |
|
|
1294 | static inline T ecb_div_ru (T val, T div) |
|
|
1295 | { |
|
|
1296 | return val < 0 ? - ((-val ) / div) : (val + div - 1) / div; |
|
|
1297 | } |
|
|
1298 | #else |
|
|
1299 | #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div)) |
|
|
1300 | #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div)) |
|
|
1301 | #endif |
|
|
1302 | |
|
|
1303 | #if ecb_cplusplus_does_not_suck |
|
|
1304 | /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ |
|
|
1305 | template<typename T, int N> |
|
|
1306 | static inline int ecb_array_length (const T (&arr)[N]) |
|
|
1307 | { |
|
|
1308 | return N; |
|
|
1309 | } |
|
|
1310 | #else |
|
|
1311 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
|
|
1312 | #endif |
|
|
1313 | |
|
|
1314 | ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x); |
|
|
1315 | ecb_function_ ecb_const uint32_t |
|
|
1316 | ecb_binary16_to_binary32 (uint32_t x) |
|
|
1317 | { |
|
|
1318 | unsigned int s = (x & 0x8000) << (31 - 15); |
|
|
1319 | int e = (x >> 10) & 0x001f; |
|
|
1320 | unsigned int m = x & 0x03ff; |
|
|
1321 | |
|
|
1322 | if (ecb_expect_false (e == 31)) |
|
|
1323 | /* infinity or NaN */ |
|
|
1324 | e = 255 - (127 - 15); |
|
|
1325 | else if (ecb_expect_false (!e)) |
|
|
1326 | { |
|
|
1327 | if (ecb_expect_true (!m)) |
|
|
1328 | /* zero, handled by code below by forcing e to 0 */ |
|
|
1329 | e = 0 - (127 - 15); |
|
|
1330 | else |
|
|
1331 | { |
|
|
1332 | /* subnormal, renormalise */ |
|
|
1333 | unsigned int s = 10 - ecb_ld32 (m); |
|
|
1334 | |
|
|
1335 | m = (m << s) & 0x3ff; /* mask implicit bit */ |
|
|
1336 | e -= s - 1; |
|
|
1337 | } |
|
|
1338 | } |
|
|
1339 | |
|
|
1340 | /* e and m now are normalised, or zero, (or inf or nan) */ |
|
|
1341 | e += 127 - 15; |
|
|
1342 | |
|
|
1343 | return s | (e << 23) | (m << (23 - 10)); |
|
|
1344 | } |
|
|
1345 | |
|
|
1346 | ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x); |
|
|
1347 | ecb_function_ ecb_const uint16_t |
|
|
1348 | ecb_binary32_to_binary16 (uint32_t x) |
|
|
1349 | { |
|
|
1350 | unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */ |
|
|
1351 | unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */ |
|
|
1352 | unsigned int m = x & 0x007fffff; |
|
|
1353 | |
|
|
1354 | x &= 0x7fffffff; |
|
|
1355 | |
|
|
1356 | /* if it's within range of binary16 normals, use fast path */ |
|
|
1357 | if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff)) |
|
|
1358 | { |
|
|
1359 | /* mantissa round-to-even */ |
|
|
1360 | m += 0x00000fff + ((m >> (23 - 10)) & 1); |
|
|
1361 | |
|
|
1362 | /* handle overflow */ |
|
|
1363 | if (ecb_expect_false (m >= 0x00800000)) |
|
|
1364 | { |
|
|
1365 | m >>= 1; |
|
|
1366 | e += 1; |
|
|
1367 | } |
|
|
1368 | |
|
|
1369 | return s | (e << 10) | (m >> (23 - 10)); |
|
|
1370 | } |
|
|
1371 | |
|
|
1372 | /* handle large numbers and infinity */ |
|
|
1373 | if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000)) |
|
|
1374 | return s | 0x7c00; |
|
|
1375 | |
|
|
1376 | /* handle zero, subnormals and small numbers */ |
|
|
1377 | if (ecb_expect_true (x < 0x38800000)) |
|
|
1378 | { |
|
|
1379 | /* zero */ |
|
|
1380 | if (ecb_expect_true (!x)) |
|
|
1381 | return s; |
|
|
1382 | |
|
|
1383 | /* handle subnormals */ |
|
|
1384 | |
|
|
1385 | /* too small, will be zero */ |
|
|
1386 | if (e < (14 - 24)) /* might not be sharp, but is good enough */ |
|
|
1387 | return s; |
|
|
1388 | |
|
|
1389 | m |= 0x00800000; /* make implicit bit explicit */ |
|
|
1390 | |
|
|
1391 | /* very tricky - we need to round to the nearest e (+10) bit value */ |
|
|
1392 | { |
|
|
1393 | unsigned int bits = 14 - e; |
|
|
1394 | unsigned int half = (1 << (bits - 1)) - 1; |
|
|
1395 | unsigned int even = (m >> bits) & 1; |
|
|
1396 | |
|
|
1397 | /* if this overflows, we will end up with a normalised number */ |
|
|
1398 | m = (m + half + even) >> bits; |
|
|
1399 | } |
|
|
1400 | |
|
|
1401 | return s | m; |
|
|
1402 | } |
|
|
1403 | |
|
|
1404 | /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */ |
|
|
1405 | m >>= 13; |
|
|
1406 | |
|
|
1407 | return s | 0x7c00 | m | !m; |
|
|
1408 | } |
|
|
1409 | |
|
|
1410 | /*******************************************************************************/ |
|
|
1411 | /* floating point stuff, can be disabled by defining ECB_NO_LIBM */ |
|
|
1412 | |
|
|
1413 | /* basically, everything uses "ieee pure-endian" floating point numbers */ |
|
|
1414 | /* the only noteworthy exception is ancient armle, which uses order 43218765 */ |
|
|
1415 | #if 0 \ |
|
|
1416 | || __i386 || __i386__ \ |
|
|
1417 | || ECB_GCC_AMD64 \ |
|
|
1418 | || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ |
|
|
1419 | || defined __s390__ || defined __s390x__ \ |
|
|
1420 | || defined __mips__ \ |
|
|
1421 | || defined __alpha__ \ |
|
|
1422 | || defined __hppa__ \ |
|
|
1423 | || defined __ia64__ \ |
|
|
1424 | || defined __m68k__ \ |
|
|
1425 | || defined __m88k__ \ |
|
|
1426 | || defined __sh__ \ |
|
|
1427 | || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \ |
|
|
1428 | || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ |
|
|
1429 | || defined __aarch64__ |
|
|
1430 | #define ECB_STDFP 1 |
|
|
1431 | #include <string.h> /* for memcpy */ |
|
|
1432 | #else |
|
|
1433 | #define ECB_STDFP 0 |
|
|
1434 | #endif |
|
|
1435 | |
|
|
1436 | #ifndef ECB_NO_LIBM |
|
|
1437 | |
|
|
1438 | #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */ |
|
|
1439 | |
|
|
1440 | /* only the oldest of old doesn't have this one. solaris. */ |
|
|
1441 | #ifdef INFINITY |
|
|
1442 | #define ECB_INFINITY INFINITY |
|
|
1443 | #else |
|
|
1444 | #define ECB_INFINITY HUGE_VAL |
|
|
1445 | #endif |
|
|
1446 | |
|
|
1447 | #ifdef NAN |
|
|
1448 | #define ECB_NAN NAN |
|
|
1449 | #else |
|
|
1450 | #define ECB_NAN ECB_INFINITY |
|
|
1451 | #endif |
|
|
1452 | |
|
|
1453 | #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L |
|
|
1454 | #define ecb_ldexpf(x,e) ldexpf ((x), (e)) |
|
|
1455 | #define ecb_frexpf(x,e) frexpf ((x), (e)) |
|
|
1456 | #else |
|
|
1457 | #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e)) |
|
|
1458 | #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e)) |
|
|
1459 | #endif |
|
|
1460 | |
|
|
1461 | /* convert a float to ieee single/binary32 */ |
|
|
1462 | ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x); |
|
|
1463 | ecb_function_ ecb_const uint32_t |
|
|
1464 | ecb_float_to_binary32 (float x) |
|
|
1465 | { |
|
|
1466 | uint32_t r; |
|
|
1467 | |
|
|
1468 | #if ECB_STDFP |
|
|
1469 | memcpy (&r, &x, 4); |
|
|
1470 | #else |
|
|
1471 | /* slow emulation, works for anything but -0 */ |
|
|
1472 | uint32_t m; |
|
|
1473 | int e; |
|
|
1474 | |
|
|
1475 | if (x == 0e0f ) return 0x00000000U; |
|
|
1476 | if (x > +3.40282346638528860e+38f) return 0x7f800000U; |
|
|
1477 | if (x < -3.40282346638528860e+38f) return 0xff800000U; |
|
|
1478 | if (x != x ) return 0x7fbfffffU; |
|
|
1479 | |
|
|
1480 | m = ecb_frexpf (x, &e) * 0x1000000U; |
|
|
1481 | |
|
|
1482 | r = m & 0x80000000U; |
|
|
1483 | |
|
|
1484 | if (r) |
|
|
1485 | m = -m; |
|
|
1486 | |
|
|
1487 | if (e <= -126) |
|
|
1488 | { |
|
|
1489 | m &= 0xffffffU; |
|
|
1490 | m >>= (-125 - e); |
|
|
1491 | e = -126; |
|
|
1492 | } |
|
|
1493 | |
|
|
1494 | r |= (e + 126) << 23; |
|
|
1495 | r |= m & 0x7fffffU; |
|
|
1496 | #endif |
|
|
1497 | |
|
|
1498 | return r; |
|
|
1499 | } |
|
|
1500 | |
|
|
1501 | /* converts an ieee single/binary32 to a float */ |
|
|
1502 | ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x); |
|
|
1503 | ecb_function_ ecb_const float |
|
|
1504 | ecb_binary32_to_float (uint32_t x) |
|
|
1505 | { |
|
|
1506 | float r; |
|
|
1507 | |
|
|
1508 | #if ECB_STDFP |
|
|
1509 | memcpy (&r, &x, 4); |
|
|
1510 | #else |
|
|
1511 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1512 | int neg = x >> 31; |
|
|
1513 | int e = (x >> 23) & 0xffU; |
|
|
1514 | |
|
|
1515 | x &= 0x7fffffU; |
|
|
1516 | |
|
|
1517 | if (e) |
|
|
1518 | x |= 0x800000U; |
|
|
1519 | else |
|
|
1520 | e = 1; |
|
|
1521 | |
|
|
1522 | /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ |
|
|
1523 | r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126); |
|
|
1524 | |
|
|
1525 | r = neg ? -r : r; |
|
|
1526 | #endif |
|
|
1527 | |
|
|
1528 | return r; |
|
|
1529 | } |
|
|
1530 | |
|
|
1531 | /* convert a double to ieee double/binary64 */ |
|
|
1532 | ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x); |
|
|
1533 | ecb_function_ ecb_const uint64_t |
|
|
1534 | ecb_double_to_binary64 (double x) |
|
|
1535 | { |
|
|
1536 | uint64_t r; |
|
|
1537 | |
|
|
1538 | #if ECB_STDFP |
|
|
1539 | memcpy (&r, &x, 8); |
|
|
1540 | #else |
|
|
1541 | /* slow emulation, works for anything but -0 */ |
|
|
1542 | uint64_t m; |
|
|
1543 | int e; |
|
|
1544 | |
|
|
1545 | if (x == 0e0 ) return 0x0000000000000000U; |
|
|
1546 | if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U; |
|
|
1547 | if (x < -1.79769313486231470e+308) return 0xfff0000000000000U; |
|
|
1548 | if (x != x ) return 0X7ff7ffffffffffffU; |
|
|
1549 | |
|
|
1550 | m = frexp (x, &e) * 0x20000000000000U; |
|
|
1551 | |
|
|
1552 | r = m & 0x8000000000000000;; |
|
|
1553 | |
|
|
1554 | if (r) |
|
|
1555 | m = -m; |
|
|
1556 | |
|
|
1557 | if (e <= -1022) |
|
|
1558 | { |
|
|
1559 | m &= 0x1fffffffffffffU; |
|
|
1560 | m >>= (-1021 - e); |
|
|
1561 | e = -1022; |
|
|
1562 | } |
|
|
1563 | |
|
|
1564 | r |= ((uint64_t)(e + 1022)) << 52; |
|
|
1565 | r |= m & 0xfffffffffffffU; |
|
|
1566 | #endif |
|
|
1567 | |
|
|
1568 | return r; |
|
|
1569 | } |
|
|
1570 | |
|
|
1571 | /* converts an ieee double/binary64 to a double */ |
|
|
1572 | ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x); |
|
|
1573 | ecb_function_ ecb_const double |
|
|
1574 | ecb_binary64_to_double (uint64_t x) |
|
|
1575 | { |
|
|
1576 | double r; |
|
|
1577 | |
|
|
1578 | #if ECB_STDFP |
|
|
1579 | memcpy (&r, &x, 8); |
|
|
1580 | #else |
|
|
1581 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1582 | int neg = x >> 63; |
|
|
1583 | int e = (x >> 52) & 0x7ffU; |
|
|
1584 | |
|
|
1585 | x &= 0xfffffffffffffU; |
|
|
1586 | |
|
|
1587 | if (e) |
|
|
1588 | x |= 0x10000000000000U; |
|
|
1589 | else |
|
|
1590 | e = 1; |
|
|
1591 | |
|
|
1592 | /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */ |
|
|
1593 | r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022); |
|
|
1594 | |
|
|
1595 | r = neg ? -r : r; |
|
|
1596 | #endif |
|
|
1597 | |
|
|
1598 | return r; |
|
|
1599 | } |
|
|
1600 | |
|
|
1601 | /* convert a float to ieee half/binary16 */ |
|
|
1602 | ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x); |
|
|
1603 | ecb_function_ ecb_const uint16_t |
|
|
1604 | ecb_float_to_binary16 (float x) |
|
|
1605 | { |
|
|
1606 | return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x)); |
|
|
1607 | } |
|
|
1608 | |
|
|
1609 | /* convert an ieee half/binary16 to float */ |
|
|
1610 | ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x); |
|
|
1611 | ecb_function_ ecb_const float |
|
|
1612 | ecb_binary16_to_float (uint16_t x) |
|
|
1613 | { |
|
|
1614 | return ecb_binary32_to_float (ecb_binary16_to_binary32 (x)); |
|
|
1615 | } |
|
|
1616 | |
|
|
1617 | #endif |
|
|
1618 | |
|
|
1619 | #endif |
|
|
1620 | |
|
|
1621 | /* ECB.H END */ |
|
|
1622 | |
|
|
1623 | #if ECB_MEMORY_FENCE_NEEDS_PTHREADS |
|
|
1624 | /* if your architecture doesn't need memory fences, e.g. because it is |
|
|
1625 | * single-cpu/core, or if you use libev in a project that doesn't use libev |
|
|
1626 | * from multiple threads, then you can define ECB_NO_THREADS when compiling |
|
|
1627 | * libev, in which cases the memory fences become nops. |
|
|
1628 | * alternatively, you can remove this #error and link against libpthread, |
|
|
1629 | * which will then provide the memory fences. |
|
|
1630 | */ |
|
|
1631 | # error "memory fences not defined for your architecture, please report" |
|
|
1632 | #endif |
|
|
1633 | |
|
|
1634 | #ifndef ECB_MEMORY_FENCE |
|
|
1635 | # define ECB_MEMORY_FENCE do { } while (0) |
|
|
1636 | # define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
1637 | # define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
1638 | #endif |
|
|
1639 | |
|
|
1640 | #define inline_size ecb_inline |
|
|
1641 | |
|
|
1642 | #if EV_FEATURE_CODE |
|
|
1643 | # define inline_speed ecb_inline |
|
|
1644 | #else |
|
|
1645 | # define inline_speed ecb_noinline static |
|
|
1646 | #endif |
|
|
1647 | |
|
|
1648 | /*****************************************************************************/ |
|
|
1649 | /* raw syscall wrappers */ |
|
|
1650 | |
|
|
1651 | #if EV_NEED_SYSCALL |
|
|
1652 | |
|
|
1653 | #include <sys/syscall.h> |
|
|
1654 | |
|
|
1655 | /* |
|
|
1656 | * define some syscall wrappers for common architectures |
|
|
1657 | * this is mostly for nice looks during debugging, not performance. |
|
|
1658 | * our syscalls return < 0, not == -1, on error. which is good |
|
|
1659 | * enough for linux aio. |
|
|
1660 | * TODO: arm is also common nowadays, maybe even mips and x86 |
|
|
1661 | * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove... |
|
|
1662 | */ |
|
|
1663 | #if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE |
|
|
1664 | /* the costly errno access probably kills this for size optimisation */ |
|
|
1665 | |
|
|
1666 | #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \ |
|
|
1667 | ({ \ |
|
|
1668 | long res; \ |
|
|
1669 | register unsigned long r6 __asm__ ("r9" ); \ |
|
|
1670 | register unsigned long r5 __asm__ ("r8" ); \ |
|
|
1671 | register unsigned long r4 __asm__ ("r10"); \ |
|
|
1672 | register unsigned long r3 __asm__ ("rdx"); \ |
|
|
1673 | register unsigned long r2 __asm__ ("rsi"); \ |
|
|
1674 | register unsigned long r1 __asm__ ("rdi"); \ |
|
|
1675 | if (narg >= 6) r6 = (unsigned long)(arg6); \ |
|
|
1676 | if (narg >= 5) r5 = (unsigned long)(arg5); \ |
|
|
1677 | if (narg >= 4) r4 = (unsigned long)(arg4); \ |
|
|
1678 | if (narg >= 3) r3 = (unsigned long)(arg3); \ |
|
|
1679 | if (narg >= 2) r2 = (unsigned long)(arg2); \ |
|
|
1680 | if (narg >= 1) r1 = (unsigned long)(arg1); \ |
|
|
1681 | __asm__ __volatile__ ( \ |
|
|
1682 | "syscall\n\t" \ |
|
|
1683 | : "=a" (res) \ |
|
|
1684 | : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \ |
|
|
1685 | : "cc", "r11", "cx", "memory"); \ |
|
|
1686 | errno = -res; \ |
|
|
1687 | res; \ |
|
|
1688 | }) |
|
|
1689 | |
|
|
1690 | #endif |
|
|
1691 | |
|
|
1692 | #ifdef ev_syscall |
|
|
1693 | #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0) |
|
|
1694 | #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0) |
|
|
1695 | #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0) |
|
|
1696 | #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0) |
|
|
1697 | #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0) |
|
|
1698 | #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0) |
|
|
1699 | #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6) |
|
|
1700 | #else |
|
|
1701 | #define ev_syscall0(nr) syscall (nr) |
|
|
1702 | #define ev_syscall1(nr,arg1) syscall (nr, arg1) |
|
|
1703 | #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2) |
|
|
1704 | #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3) |
|
|
1705 | #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4) |
|
|
1706 | #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5) |
|
|
1707 | #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6) |
|
|
1708 | #endif |
|
|
1709 | |
|
|
1710 | #endif |
|
|
1711 | |
|
|
1712 | /*****************************************************************************/ |
|
|
1713 | |
157 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
1714 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
|
|
1715 | |
|
|
1716 | #if EV_MINPRI == EV_MAXPRI |
|
|
1717 | # define ABSPRI(w) (((W)w), 0) |
|
|
1718 | #else |
158 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
1719 | # define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
|
|
1720 | #endif |
159 | |
1721 | |
|
|
1722 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
|
|
1723 | |
160 | typedef struct ev_watcher *W; |
1724 | typedef ev_watcher *W; |
161 | typedef struct ev_watcher_list *WL; |
1725 | typedef ev_watcher_list *WL; |
162 | typedef struct ev_watcher_time *WT; |
1726 | typedef ev_watcher_time *WT; |
163 | |
1727 | |
|
|
1728 | #define ev_active(w) ((W)(w))->active |
|
|
1729 | #define ev_at(w) ((WT)(w))->at |
|
|
1730 | |
|
|
1731 | #if EV_USE_REALTIME |
|
|
1732 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
|
|
1733 | /* giving it a reasonably high chance of working on typical architectures */ |
|
|
1734 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
|
|
1735 | #endif |
|
|
1736 | |
|
|
1737 | #if EV_USE_MONOTONIC |
164 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
1738 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
|
|
1739 | #endif |
165 | |
1740 | |
|
|
1741 | #ifndef EV_FD_TO_WIN32_HANDLE |
|
|
1742 | # define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
|
|
1743 | #endif |
|
|
1744 | #ifndef EV_WIN32_HANDLE_TO_FD |
|
|
1745 | # define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0) |
|
|
1746 | #endif |
|
|
1747 | #ifndef EV_WIN32_CLOSE_FD |
|
|
1748 | # define EV_WIN32_CLOSE_FD(fd) close (fd) |
|
|
1749 | #endif |
|
|
1750 | |
166 | #ifdef WIN32 |
1751 | #ifdef _WIN32 |
167 | # include "ev_win32.c" |
1752 | # include "ev_win32.c" |
168 | #endif |
1753 | #endif |
169 | |
1754 | |
170 | /*****************************************************************************/ |
1755 | /*****************************************************************************/ |
171 | |
1756 | |
|
|
1757 | #if EV_USE_LINUXAIO |
|
|
1758 | # include <linux/aio_abi.h> /* probably only needed for aio_context_t */ |
|
|
1759 | #endif |
|
|
1760 | |
|
|
1761 | /* define a suitable floor function (only used by periodics atm) */ |
|
|
1762 | |
|
|
1763 | #if EV_USE_FLOOR |
|
|
1764 | # include <math.h> |
|
|
1765 | # define ev_floor(v) floor (v) |
|
|
1766 | #else |
|
|
1767 | |
|
|
1768 | #include <float.h> |
|
|
1769 | |
|
|
1770 | /* a floor() replacement function, should be independent of ev_tstamp type */ |
|
|
1771 | ecb_noinline |
|
|
1772 | static ev_tstamp |
|
|
1773 | ev_floor (ev_tstamp v) |
|
|
1774 | { |
|
|
1775 | /* the choice of shift factor is not terribly important */ |
|
|
1776 | #if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ |
|
|
1777 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; |
|
|
1778 | #else |
|
|
1779 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; |
|
|
1780 | #endif |
|
|
1781 | |
|
|
1782 | /* special treatment for negative arguments */ |
|
|
1783 | if (ecb_expect_false (v < 0.)) |
|
|
1784 | { |
|
|
1785 | ev_tstamp f = -ev_floor (-v); |
|
|
1786 | |
|
|
1787 | return f - (f == v ? 0 : 1); |
|
|
1788 | } |
|
|
1789 | |
|
|
1790 | /* argument too large for an unsigned long? then reduce it */ |
|
|
1791 | if (ecb_expect_false (v >= shift)) |
|
|
1792 | { |
|
|
1793 | ev_tstamp f; |
|
|
1794 | |
|
|
1795 | if (v == v - 1.) |
|
|
1796 | return v; /* very large numbers are assumed to be integer */ |
|
|
1797 | |
|
|
1798 | f = shift * ev_floor (v * (1. / shift)); |
|
|
1799 | return f + ev_floor (v - f); |
|
|
1800 | } |
|
|
1801 | |
|
|
1802 | /* fits into an unsigned long */ |
|
|
1803 | return (unsigned long)v; |
|
|
1804 | } |
|
|
1805 | |
|
|
1806 | #endif |
|
|
1807 | |
|
|
1808 | /*****************************************************************************/ |
|
|
1809 | |
|
|
1810 | #ifdef __linux |
|
|
1811 | # include <sys/utsname.h> |
|
|
1812 | #endif |
|
|
1813 | |
|
|
1814 | ecb_noinline ecb_cold |
|
|
1815 | static unsigned int |
|
|
1816 | ev_linux_version (void) |
|
|
1817 | { |
|
|
1818 | #ifdef __linux |
|
|
1819 | unsigned int v = 0; |
|
|
1820 | struct utsname buf; |
|
|
1821 | int i; |
|
|
1822 | char *p = buf.release; |
|
|
1823 | |
|
|
1824 | if (uname (&buf)) |
|
|
1825 | return 0; |
|
|
1826 | |
|
|
1827 | for (i = 3+1; --i; ) |
|
|
1828 | { |
|
|
1829 | unsigned int c = 0; |
|
|
1830 | |
|
|
1831 | for (;;) |
|
|
1832 | { |
|
|
1833 | if (*p >= '0' && *p <= '9') |
|
|
1834 | c = c * 10 + *p++ - '0'; |
|
|
1835 | else |
|
|
1836 | { |
|
|
1837 | p += *p == '.'; |
|
|
1838 | break; |
|
|
1839 | } |
|
|
1840 | } |
|
|
1841 | |
|
|
1842 | v = (v << 8) | c; |
|
|
1843 | } |
|
|
1844 | |
|
|
1845 | return v; |
|
|
1846 | #else |
|
|
1847 | return 0; |
|
|
1848 | #endif |
|
|
1849 | } |
|
|
1850 | |
|
|
1851 | /*****************************************************************************/ |
|
|
1852 | |
|
|
1853 | #if EV_AVOID_STDIO |
|
|
1854 | ecb_noinline ecb_cold |
|
|
1855 | static void |
|
|
1856 | ev_printerr (const char *msg) |
|
|
1857 | { |
|
|
1858 | write (STDERR_FILENO, msg, strlen (msg)); |
|
|
1859 | } |
|
|
1860 | #endif |
|
|
1861 | |
172 | static void (*syserr_cb)(const char *msg); |
1862 | static void (*syserr_cb)(const char *msg) EV_NOEXCEPT; |
173 | |
1863 | |
|
|
1864 | ecb_cold |
|
|
1865 | void |
174 | void ev_set_syserr_cb (void (*cb)(const char *msg)) |
1866 | ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT |
175 | { |
1867 | { |
176 | syserr_cb = cb; |
1868 | syserr_cb = cb; |
177 | } |
1869 | } |
178 | |
1870 | |
|
|
1871 | ecb_noinline ecb_cold |
179 | static void |
1872 | static void |
180 | syserr (const char *msg) |
1873 | ev_syserr (const char *msg) |
181 | { |
1874 | { |
182 | if (!msg) |
1875 | if (!msg) |
183 | msg = "(libev) system error"; |
1876 | msg = "(libev) system error"; |
184 | |
1877 | |
185 | if (syserr_cb) |
1878 | if (syserr_cb) |
186 | syserr_cb (msg); |
1879 | syserr_cb (msg); |
187 | else |
1880 | else |
188 | { |
1881 | { |
|
|
1882 | #if EV_AVOID_STDIO |
|
|
1883 | ev_printerr (msg); |
|
|
1884 | ev_printerr (": "); |
|
|
1885 | ev_printerr (strerror (errno)); |
|
|
1886 | ev_printerr ("\n"); |
|
|
1887 | #else |
189 | perror (msg); |
1888 | perror (msg); |
|
|
1889 | #endif |
190 | abort (); |
1890 | abort (); |
191 | } |
1891 | } |
192 | } |
1892 | } |
193 | |
1893 | |
194 | static void *(*alloc)(void *ptr, long size); |
1894 | static void * |
|
|
1895 | ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT |
|
|
1896 | { |
|
|
1897 | /* some systems, notably openbsd and darwin, fail to properly |
|
|
1898 | * implement realloc (x, 0) (as required by both ansi c-89 and |
|
|
1899 | * the single unix specification, so work around them here. |
|
|
1900 | * recently, also (at least) fedora and debian started breaking it, |
|
|
1901 | * despite documenting it otherwise. |
|
|
1902 | */ |
195 | |
1903 | |
|
|
1904 | if (size) |
|
|
1905 | return realloc (ptr, size); |
|
|
1906 | |
|
|
1907 | free (ptr); |
|
|
1908 | return 0; |
|
|
1909 | } |
|
|
1910 | |
|
|
1911 | static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul; |
|
|
1912 | |
|
|
1913 | ecb_cold |
|
|
1914 | void |
196 | void ev_set_allocator (void *(*cb)(void *ptr, long size)) |
1915 | ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT |
197 | { |
1916 | { |
198 | alloc = cb; |
1917 | alloc = cb; |
199 | } |
1918 | } |
200 | |
1919 | |
201 | static void * |
1920 | inline_speed void * |
202 | ev_realloc (void *ptr, long size) |
1921 | ev_realloc (void *ptr, long size) |
203 | { |
1922 | { |
204 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
1923 | ptr = alloc (ptr, size); |
205 | |
1924 | |
206 | if (!ptr && size) |
1925 | if (!ptr && size) |
207 | { |
1926 | { |
|
|
1927 | #if EV_AVOID_STDIO |
|
|
1928 | ev_printerr ("(libev) memory allocation failed, aborting.\n"); |
|
|
1929 | #else |
208 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
1930 | fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size); |
|
|
1931 | #endif |
209 | abort (); |
1932 | abort (); |
210 | } |
1933 | } |
211 | |
1934 | |
212 | return ptr; |
1935 | return ptr; |
213 | } |
1936 | } |
… | |
… | |
215 | #define ev_malloc(size) ev_realloc (0, (size)) |
1938 | #define ev_malloc(size) ev_realloc (0, (size)) |
216 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
1939 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
217 | |
1940 | |
218 | /*****************************************************************************/ |
1941 | /*****************************************************************************/ |
219 | |
1942 | |
|
|
1943 | /* set in reify when reification needed */ |
|
|
1944 | #define EV_ANFD_REIFY 1 |
|
|
1945 | |
|
|
1946 | /* file descriptor info structure */ |
220 | typedef struct |
1947 | typedef struct |
221 | { |
1948 | { |
222 | WL head; |
1949 | WL head; |
223 | unsigned char events; |
1950 | unsigned char events; /* the events watched for */ |
224 | unsigned char reify; |
1951 | unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ |
|
|
1952 | unsigned char emask; /* some backends store the actual kernel mask in here */ |
|
|
1953 | unsigned char eflags; /* flags field for use by backends */ |
|
|
1954 | #if EV_USE_EPOLL |
|
|
1955 | unsigned int egen; /* generation counter to counter epoll bugs */ |
|
|
1956 | #endif |
|
|
1957 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
|
|
1958 | SOCKET handle; |
|
|
1959 | #endif |
|
|
1960 | #if EV_USE_IOCP |
|
|
1961 | OVERLAPPED or, ow; |
|
|
1962 | #endif |
225 | } ANFD; |
1963 | } ANFD; |
226 | |
1964 | |
|
|
1965 | /* stores the pending event set for a given watcher */ |
227 | typedef struct |
1966 | typedef struct |
228 | { |
1967 | { |
229 | W w; |
1968 | W w; |
230 | int events; |
1969 | int events; /* the pending event set for the given watcher */ |
231 | } ANPENDING; |
1970 | } ANPENDING; |
|
|
1971 | |
|
|
1972 | #if EV_USE_INOTIFY |
|
|
1973 | /* hash table entry per inotify-id */ |
|
|
1974 | typedef struct |
|
|
1975 | { |
|
|
1976 | WL head; |
|
|
1977 | } ANFS; |
|
|
1978 | #endif |
|
|
1979 | |
|
|
1980 | /* Heap Entry */ |
|
|
1981 | #if EV_HEAP_CACHE_AT |
|
|
1982 | /* a heap element */ |
|
|
1983 | typedef struct { |
|
|
1984 | ev_tstamp at; |
|
|
1985 | WT w; |
|
|
1986 | } ANHE; |
|
|
1987 | |
|
|
1988 | #define ANHE_w(he) (he).w /* access watcher, read-write */ |
|
|
1989 | #define ANHE_at(he) (he).at /* access cached at, read-only */ |
|
|
1990 | #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ |
|
|
1991 | #else |
|
|
1992 | /* a heap element */ |
|
|
1993 | typedef WT ANHE; |
|
|
1994 | |
|
|
1995 | #define ANHE_w(he) (he) |
|
|
1996 | #define ANHE_at(he) (he)->at |
|
|
1997 | #define ANHE_at_cache(he) |
|
|
1998 | #endif |
232 | |
1999 | |
233 | #if EV_MULTIPLICITY |
2000 | #if EV_MULTIPLICITY |
234 | |
2001 | |
235 | struct ev_loop |
2002 | struct ev_loop |
236 | { |
2003 | { |
237 | ev_tstamp ev_rt_now; |
2004 | ev_tstamp ev_rt_now; |
|
|
2005 | #define ev_rt_now ((loop)->ev_rt_now) |
238 | #define VAR(name,decl) decl; |
2006 | #define VAR(name,decl) decl; |
239 | #include "ev_vars.h" |
2007 | #include "ev_vars.h" |
240 | #undef VAR |
2008 | #undef VAR |
241 | }; |
2009 | }; |
242 | #include "ev_wrap.h" |
2010 | #include "ev_wrap.h" |
243 | |
2011 | |
244 | struct ev_loop default_loop_struct; |
2012 | static struct ev_loop default_loop_struct; |
245 | static struct ev_loop *default_loop; |
2013 | EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ |
246 | |
2014 | |
247 | #else |
2015 | #else |
248 | |
2016 | |
249 | ev_tstamp ev_rt_now; |
2017 | EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */ |
250 | #define VAR(name,decl) static decl; |
2018 | #define VAR(name,decl) static decl; |
251 | #include "ev_vars.h" |
2019 | #include "ev_vars.h" |
252 | #undef VAR |
2020 | #undef VAR |
253 | |
2021 | |
254 | static int default_loop; |
2022 | static int ev_default_loop_ptr; |
255 | |
2023 | |
256 | #endif |
2024 | #endif |
|
|
2025 | |
|
|
2026 | #if EV_FEATURE_API |
|
|
2027 | # define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A) |
|
|
2028 | # define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A) |
|
|
2029 | # define EV_INVOKE_PENDING invoke_cb (EV_A) |
|
|
2030 | #else |
|
|
2031 | # define EV_RELEASE_CB (void)0 |
|
|
2032 | # define EV_ACQUIRE_CB (void)0 |
|
|
2033 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
|
|
2034 | #endif |
|
|
2035 | |
|
|
2036 | #define EVBREAK_RECURSE 0x80 |
257 | |
2037 | |
258 | /*****************************************************************************/ |
2038 | /*****************************************************************************/ |
259 | |
2039 | |
|
|
2040 | #ifndef EV_HAVE_EV_TIME |
260 | ev_tstamp |
2041 | ev_tstamp |
261 | ev_time (void) |
2042 | ev_time (void) EV_NOEXCEPT |
262 | { |
2043 | { |
263 | #if EV_USE_REALTIME |
2044 | #if EV_USE_REALTIME |
|
|
2045 | if (ecb_expect_true (have_realtime)) |
|
|
2046 | { |
264 | struct timespec ts; |
2047 | struct timespec ts; |
265 | clock_gettime (CLOCK_REALTIME, &ts); |
2048 | clock_gettime (CLOCK_REALTIME, &ts); |
266 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
2049 | return EV_TS_GET (ts); |
267 | #else |
2050 | } |
|
|
2051 | #endif |
|
|
2052 | |
|
|
2053 | { |
268 | struct timeval tv; |
2054 | struct timeval tv; |
269 | gettimeofday (&tv, 0); |
2055 | gettimeofday (&tv, 0); |
270 | return tv.tv_sec + tv.tv_usec * 1e-6; |
2056 | return EV_TV_GET (tv); |
271 | #endif |
2057 | } |
272 | } |
2058 | } |
|
|
2059 | #endif |
273 | |
2060 | |
274 | inline ev_tstamp |
2061 | inline_size ev_tstamp |
275 | get_clock (void) |
2062 | get_clock (void) |
276 | { |
2063 | { |
277 | #if EV_USE_MONOTONIC |
2064 | #if EV_USE_MONOTONIC |
278 | if (expect_true (have_monotonic)) |
2065 | if (ecb_expect_true (have_monotonic)) |
279 | { |
2066 | { |
280 | struct timespec ts; |
2067 | struct timespec ts; |
281 | clock_gettime (CLOCK_MONOTONIC, &ts); |
2068 | clock_gettime (CLOCK_MONOTONIC, &ts); |
282 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
2069 | return EV_TS_GET (ts); |
283 | } |
2070 | } |
284 | #endif |
2071 | #endif |
285 | |
2072 | |
286 | return ev_time (); |
2073 | return ev_time (); |
287 | } |
2074 | } |
288 | |
2075 | |
289 | #if EV_MULTIPLICITY |
2076 | #if EV_MULTIPLICITY |
290 | ev_tstamp |
2077 | ev_tstamp |
291 | ev_now (EV_P) |
2078 | ev_now (EV_P) EV_NOEXCEPT |
292 | { |
2079 | { |
293 | return ev_rt_now; |
2080 | return ev_rt_now; |
294 | } |
2081 | } |
295 | #endif |
2082 | #endif |
296 | |
2083 | |
297 | #define array_roundsize(type,n) ((n) | 4 & ~3) |
2084 | void |
|
|
2085 | ev_sleep (ev_tstamp delay) EV_NOEXCEPT |
|
|
2086 | { |
|
|
2087 | if (delay > EV_TS_CONST (0.)) |
|
|
2088 | { |
|
|
2089 | #if EV_USE_NANOSLEEP |
|
|
2090 | struct timespec ts; |
|
|
2091 | |
|
|
2092 | EV_TS_SET (ts, delay); |
|
|
2093 | nanosleep (&ts, 0); |
|
|
2094 | #elif defined _WIN32 |
|
|
2095 | /* maybe this should round up, as ms is very low resolution */ |
|
|
2096 | /* compared to select (µs) or nanosleep (ns) */ |
|
|
2097 | Sleep ((unsigned long)(EV_TS_TO_MSEC (delay))); |
|
|
2098 | #else |
|
|
2099 | struct timeval tv; |
|
|
2100 | |
|
|
2101 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
|
|
2102 | /* something not guaranteed by newer posix versions, but guaranteed */ |
|
|
2103 | /* by older ones */ |
|
|
2104 | EV_TV_SET (tv, delay); |
|
|
2105 | select (0, 0, 0, 0, &tv); |
|
|
2106 | #endif |
|
|
2107 | } |
|
|
2108 | } |
|
|
2109 | |
|
|
2110 | /*****************************************************************************/ |
|
|
2111 | |
|
|
2112 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
|
|
2113 | |
|
|
2114 | /* find a suitable new size for the given array, */ |
|
|
2115 | /* hopefully by rounding to a nice-to-malloc size */ |
|
|
2116 | inline_size int |
|
|
2117 | array_nextsize (int elem, int cur, int cnt) |
|
|
2118 | { |
|
|
2119 | int ncur = cur + 1; |
|
|
2120 | |
|
|
2121 | do |
|
|
2122 | ncur <<= 1; |
|
|
2123 | while (cnt > ncur); |
|
|
2124 | |
|
|
2125 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */ |
|
|
2126 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
|
|
2127 | { |
|
|
2128 | ncur *= elem; |
|
|
2129 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
|
|
2130 | ncur = ncur - sizeof (void *) * 4; |
|
|
2131 | ncur /= elem; |
|
|
2132 | } |
|
|
2133 | |
|
|
2134 | return ncur; |
|
|
2135 | } |
|
|
2136 | |
|
|
2137 | ecb_noinline ecb_cold |
|
|
2138 | static void * |
|
|
2139 | array_realloc (int elem, void *base, int *cur, int cnt) |
|
|
2140 | { |
|
|
2141 | *cur = array_nextsize (elem, *cur, cnt); |
|
|
2142 | return ev_realloc (base, elem * *cur); |
|
|
2143 | } |
|
|
2144 | |
|
|
2145 | #define array_needsize_noinit(base,offset,count) |
|
|
2146 | |
|
|
2147 | #define array_needsize_zerofill(base,offset,count) \ |
|
|
2148 | memset ((void *)(base + offset), 0, sizeof (*(base)) * (count)) |
298 | |
2149 | |
299 | #define array_needsize(type,base,cur,cnt,init) \ |
2150 | #define array_needsize(type,base,cur,cnt,init) \ |
300 | if (expect_false ((cnt) > cur)) \ |
2151 | if (ecb_expect_false ((cnt) > (cur))) \ |
301 | { \ |
2152 | { \ |
302 | int newcnt = cur; \ |
2153 | ecb_unused int ocur_ = (cur); \ |
303 | do \ |
2154 | (base) = (type *)array_realloc \ |
304 | { \ |
2155 | (sizeof (type), (base), &(cur), (cnt)); \ |
305 | newcnt = array_roundsize (type, newcnt << 1); \ |
2156 | init ((base), ocur_, ((cur) - ocur_)); \ |
306 | } \ |
|
|
307 | while ((cnt) > newcnt); \ |
|
|
308 | \ |
|
|
309 | base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\ |
|
|
310 | init (base + cur, newcnt - cur); \ |
|
|
311 | cur = newcnt; \ |
|
|
312 | } |
2157 | } |
313 | |
2158 | |
|
|
2159 | #if 0 |
314 | #define array_slim(type,stem) \ |
2160 | #define array_slim(type,stem) \ |
315 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
2161 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
316 | { \ |
2162 | { \ |
317 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
2163 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
318 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
2164 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
319 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
2165 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
320 | } |
2166 | } |
321 | |
2167 | #endif |
322 | /* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */ |
|
|
323 | /* bringing us everlasting joy in form of stupid extra macros that are not required in C */ |
|
|
324 | #define array_free_microshit(stem) \ |
|
|
325 | ev_free (stem ## s); stem ## cnt = stem ## max = 0; |
|
|
326 | |
2168 | |
327 | #define array_free(stem, idx) \ |
2169 | #define array_free(stem, idx) \ |
328 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
2170 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 |
329 | |
2171 | |
330 | /*****************************************************************************/ |
2172 | /*****************************************************************************/ |
331 | |
2173 | |
|
|
2174 | /* dummy callback for pending events */ |
|
|
2175 | ecb_noinline |
332 | static void |
2176 | static void |
333 | anfds_init (ANFD *base, int count) |
2177 | pendingcb (EV_P_ ev_prepare *w, int revents) |
334 | { |
2178 | { |
335 | while (count--) |
|
|
336 | { |
|
|
337 | base->head = 0; |
|
|
338 | base->events = EV_NONE; |
|
|
339 | base->reify = 0; |
|
|
340 | |
|
|
341 | ++base; |
|
|
342 | } |
|
|
343 | } |
2179 | } |
344 | |
2180 | |
|
|
2181 | ecb_noinline |
345 | void |
2182 | void |
346 | ev_feed_event (EV_P_ void *w, int revents) |
2183 | ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT |
347 | { |
2184 | { |
348 | W w_ = (W)w; |
2185 | W w_ = (W)w; |
|
|
2186 | int pri = ABSPRI (w_); |
349 | |
2187 | |
350 | if (w_->pending) |
2188 | if (ecb_expect_false (w_->pending)) |
|
|
2189 | pendings [pri][w_->pending - 1].events |= revents; |
|
|
2190 | else |
351 | { |
2191 | { |
|
|
2192 | w_->pending = ++pendingcnt [pri]; |
|
|
2193 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit); |
|
|
2194 | pendings [pri][w_->pending - 1].w = w_; |
352 | pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; |
2195 | pendings [pri][w_->pending - 1].events = revents; |
353 | return; |
|
|
354 | } |
2196 | } |
355 | |
2197 | |
356 | w_->pending = ++pendingcnt [ABSPRI (w_)]; |
2198 | pendingpri = NUMPRI - 1; |
357 | array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void)); |
|
|
358 | pendings [ABSPRI (w_)][w_->pending - 1].w = w_; |
|
|
359 | pendings [ABSPRI (w_)][w_->pending - 1].events = revents; |
|
|
360 | } |
2199 | } |
361 | |
2200 | |
362 | static void |
2201 | inline_speed void |
|
|
2202 | feed_reverse (EV_P_ W w) |
|
|
2203 | { |
|
|
2204 | array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit); |
|
|
2205 | rfeeds [rfeedcnt++] = w; |
|
|
2206 | } |
|
|
2207 | |
|
|
2208 | inline_size void |
|
|
2209 | feed_reverse_done (EV_P_ int revents) |
|
|
2210 | { |
|
|
2211 | do |
|
|
2212 | ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents); |
|
|
2213 | while (rfeedcnt); |
|
|
2214 | } |
|
|
2215 | |
|
|
2216 | inline_speed void |
363 | queue_events (EV_P_ W *events, int eventcnt, int type) |
2217 | queue_events (EV_P_ W *events, int eventcnt, int type) |
364 | { |
2218 | { |
365 | int i; |
2219 | int i; |
366 | |
2220 | |
367 | for (i = 0; i < eventcnt; ++i) |
2221 | for (i = 0; i < eventcnt; ++i) |
368 | ev_feed_event (EV_A_ events [i], type); |
2222 | ev_feed_event (EV_A_ events [i], type); |
369 | } |
2223 | } |
370 | |
2224 | |
|
|
2225 | /*****************************************************************************/ |
|
|
2226 | |
371 | inline void |
2227 | inline_speed void |
372 | fd_event (EV_P_ int fd, int revents) |
2228 | fd_event_nocheck (EV_P_ int fd, int revents) |
373 | { |
2229 | { |
374 | ANFD *anfd = anfds + fd; |
2230 | ANFD *anfd = anfds + fd; |
375 | struct ev_io *w; |
2231 | ev_io *w; |
376 | |
2232 | |
377 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
2233 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
378 | { |
2234 | { |
379 | int ev = w->events & revents; |
2235 | int ev = w->events & revents; |
380 | |
2236 | |
381 | if (ev) |
2237 | if (ev) |
382 | ev_feed_event (EV_A_ (W)w, ev); |
2238 | ev_feed_event (EV_A_ (W)w, ev); |
383 | } |
2239 | } |
384 | } |
2240 | } |
385 | |
2241 | |
386 | void |
2242 | /* do not submit kernel events for fds that have reify set */ |
|
|
2243 | /* because that means they changed while we were polling for new events */ |
|
|
2244 | inline_speed void |
387 | ev_feed_fd_event (EV_P_ int fd, int revents) |
2245 | fd_event (EV_P_ int fd, int revents) |
388 | { |
2246 | { |
|
|
2247 | ANFD *anfd = anfds + fd; |
|
|
2248 | |
|
|
2249 | if (ecb_expect_true (!anfd->reify)) |
389 | fd_event (EV_A_ fd, revents); |
2250 | fd_event_nocheck (EV_A_ fd, revents); |
390 | } |
2251 | } |
391 | |
2252 | |
392 | /*****************************************************************************/ |
2253 | void |
|
|
2254 | ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT |
|
|
2255 | { |
|
|
2256 | if (fd >= 0 && fd < anfdmax) |
|
|
2257 | fd_event_nocheck (EV_A_ fd, revents); |
|
|
2258 | } |
393 | |
2259 | |
394 | static void |
2260 | /* make sure the external fd watch events are in-sync */ |
|
|
2261 | /* with the kernel/libev internal state */ |
|
|
2262 | inline_size void |
395 | fd_reify (EV_P) |
2263 | fd_reify (EV_P) |
396 | { |
2264 | { |
397 | int i; |
2265 | int i; |
398 | |
2266 | |
|
|
2267 | /* most backends do not modify the fdchanges list in backend_modfiy. |
|
|
2268 | * except io_uring, which has fixed-size buffers which might force us |
|
|
2269 | * to handle events in backend_modify, causing fdchangesd to be amended, |
|
|
2270 | * which could result in an endless loop. |
|
|
2271 | * to avoid this, we do not dynamically handle fds that were added |
|
|
2272 | * during fd_reify. that menas thast for those backends, fdchangecnt |
|
|
2273 | * might be non-zero during poll, which must cause them to not block. |
|
|
2274 | * to not put too much of a burden on other backends, this detail |
|
|
2275 | * needs to be handled in the backend. |
|
|
2276 | */ |
|
|
2277 | int changecnt = fdchangecnt; |
|
|
2278 | |
|
|
2279 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
399 | for (i = 0; i < fdchangecnt; ++i) |
2280 | for (i = 0; i < changecnt; ++i) |
400 | { |
2281 | { |
401 | int fd = fdchanges [i]; |
2282 | int fd = fdchanges [i]; |
402 | ANFD *anfd = anfds + fd; |
2283 | ANFD *anfd = anfds + fd; |
|
|
2284 | |
|
|
2285 | if (anfd->reify & EV__IOFDSET && anfd->head) |
|
|
2286 | { |
|
|
2287 | SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
2288 | |
|
|
2289 | if (handle != anfd->handle) |
|
|
2290 | { |
|
|
2291 | unsigned long arg; |
|
|
2292 | |
|
|
2293 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0)); |
|
|
2294 | |
|
|
2295 | /* handle changed, but fd didn't - we need to do it in two steps */ |
|
|
2296 | backend_modify (EV_A_ fd, anfd->events, 0); |
|
|
2297 | anfd->events = 0; |
|
|
2298 | anfd->handle = handle; |
|
|
2299 | } |
|
|
2300 | } |
|
|
2301 | } |
|
|
2302 | #endif |
|
|
2303 | |
|
|
2304 | for (i = 0; i < changecnt; ++i) |
|
|
2305 | { |
|
|
2306 | int fd = fdchanges [i]; |
|
|
2307 | ANFD *anfd = anfds + fd; |
403 | struct ev_io *w; |
2308 | ev_io *w; |
404 | |
2309 | |
405 | int events = 0; |
2310 | unsigned char o_events = anfd->events; |
406 | |
2311 | unsigned char o_reify = anfd->reify; |
407 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
|
|
408 | events |= w->events; |
|
|
409 | |
2312 | |
410 | anfd->reify = 0; |
2313 | anfd->reify = 0; |
411 | |
2314 | |
412 | method_modify (EV_A_ fd, anfd->events, events); |
2315 | /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
|
|
2316 | { |
413 | anfd->events = events; |
2317 | anfd->events = 0; |
414 | } |
|
|
415 | |
2318 | |
|
|
2319 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
2320 | anfd->events |= (unsigned char)w->events; |
|
|
2321 | |
|
|
2322 | if (o_events != anfd->events) |
|
|
2323 | o_reify = EV__IOFDSET; /* actually |= */ |
|
|
2324 | } |
|
|
2325 | |
|
|
2326 | if (o_reify & EV__IOFDSET) |
|
|
2327 | backend_modify (EV_A_ fd, o_events, anfd->events); |
|
|
2328 | } |
|
|
2329 | |
|
|
2330 | /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added. |
|
|
2331 | * this is a rare case (see beginning comment in this function), so we copy them to the |
|
|
2332 | * front and hope the backend handles this case. |
|
|
2333 | */ |
|
|
2334 | if (ecb_expect_false (fdchangecnt != changecnt)) |
|
|
2335 | memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges)); |
|
|
2336 | |
416 | fdchangecnt = 0; |
2337 | fdchangecnt -= changecnt; |
417 | } |
2338 | } |
418 | |
2339 | |
419 | static void |
2340 | /* something about the given fd changed */ |
|
|
2341 | inline_size |
|
|
2342 | void |
420 | fd_change (EV_P_ int fd) |
2343 | fd_change (EV_P_ int fd, int flags) |
421 | { |
2344 | { |
422 | if (anfds [fd].reify) |
2345 | unsigned char reify = anfds [fd].reify; |
423 | return; |
|
|
424 | |
|
|
425 | anfds [fd].reify = 1; |
2346 | anfds [fd].reify |= flags; |
426 | |
2347 | |
|
|
2348 | if (ecb_expect_true (!reify)) |
|
|
2349 | { |
427 | ++fdchangecnt; |
2350 | ++fdchangecnt; |
428 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); |
2351 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit); |
429 | fdchanges [fdchangecnt - 1] = fd; |
2352 | fdchanges [fdchangecnt - 1] = fd; |
|
|
2353 | } |
430 | } |
2354 | } |
431 | |
2355 | |
432 | static void |
2356 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
|
|
2357 | inline_speed ecb_cold void |
433 | fd_kill (EV_P_ int fd) |
2358 | fd_kill (EV_P_ int fd) |
434 | { |
2359 | { |
435 | struct ev_io *w; |
2360 | ev_io *w; |
436 | |
2361 | |
437 | while ((w = (struct ev_io *)anfds [fd].head)) |
2362 | while ((w = (ev_io *)anfds [fd].head)) |
438 | { |
2363 | { |
439 | ev_io_stop (EV_A_ w); |
2364 | ev_io_stop (EV_A_ w); |
440 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
2365 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
441 | } |
2366 | } |
442 | } |
2367 | } |
443 | |
2368 | |
444 | static int |
2369 | /* check whether the given fd is actually valid, for error recovery */ |
|
|
2370 | inline_size ecb_cold int |
445 | fd_valid (int fd) |
2371 | fd_valid (int fd) |
446 | { |
2372 | { |
447 | #ifdef WIN32 |
2373 | #ifdef _WIN32 |
448 | return !!win32_get_osfhandle (fd); |
2374 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
449 | #else |
2375 | #else |
450 | return fcntl (fd, F_GETFD) != -1; |
2376 | return fcntl (fd, F_GETFD) != -1; |
451 | #endif |
2377 | #endif |
452 | } |
2378 | } |
453 | |
2379 | |
454 | /* called on EBADF to verify fds */ |
2380 | /* called on EBADF to verify fds */ |
|
|
2381 | ecb_noinline ecb_cold |
455 | static void |
2382 | static void |
456 | fd_ebadf (EV_P) |
2383 | fd_ebadf (EV_P) |
457 | { |
2384 | { |
458 | int fd; |
2385 | int fd; |
459 | |
2386 | |
460 | for (fd = 0; fd < anfdmax; ++fd) |
2387 | for (fd = 0; fd < anfdmax; ++fd) |
461 | if (anfds [fd].events) |
2388 | if (anfds [fd].events) |
462 | if (!fd_valid (fd) == -1 && errno == EBADF) |
2389 | if (!fd_valid (fd) && errno == EBADF) |
463 | fd_kill (EV_A_ fd); |
2390 | fd_kill (EV_A_ fd); |
464 | } |
2391 | } |
465 | |
2392 | |
466 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
2393 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
2394 | ecb_noinline ecb_cold |
467 | static void |
2395 | static void |
468 | fd_enomem (EV_P) |
2396 | fd_enomem (EV_P) |
469 | { |
2397 | { |
470 | int fd; |
2398 | int fd; |
471 | |
2399 | |
472 | for (fd = anfdmax; fd--; ) |
2400 | for (fd = anfdmax; fd--; ) |
473 | if (anfds [fd].events) |
2401 | if (anfds [fd].events) |
474 | { |
2402 | { |
475 | fd_kill (EV_A_ fd); |
2403 | fd_kill (EV_A_ fd); |
476 | return; |
2404 | break; |
477 | } |
2405 | } |
478 | } |
2406 | } |
479 | |
2407 | |
480 | /* usually called after fork if method needs to re-arm all fds from scratch */ |
2408 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
|
|
2409 | ecb_noinline |
481 | static void |
2410 | static void |
482 | fd_rearm_all (EV_P) |
2411 | fd_rearm_all (EV_P) |
483 | { |
2412 | { |
484 | int fd; |
2413 | int fd; |
485 | |
2414 | |
486 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
487 | for (fd = 0; fd < anfdmax; ++fd) |
2415 | for (fd = 0; fd < anfdmax; ++fd) |
488 | if (anfds [fd].events) |
2416 | if (anfds [fd].events) |
489 | { |
2417 | { |
490 | anfds [fd].events = 0; |
2418 | anfds [fd].events = 0; |
491 | fd_change (EV_A_ fd); |
2419 | anfds [fd].emask = 0; |
|
|
2420 | fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); |
492 | } |
2421 | } |
493 | } |
2422 | } |
494 | |
2423 | |
|
|
2424 | /* used to prepare libev internal fd's */ |
|
|
2425 | /* this is not fork-safe */ |
|
|
2426 | inline_speed void |
|
|
2427 | fd_intern (int fd) |
|
|
2428 | { |
|
|
2429 | #ifdef _WIN32 |
|
|
2430 | unsigned long arg = 1; |
|
|
2431 | ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg); |
|
|
2432 | #else |
|
|
2433 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
2434 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
2435 | #endif |
|
|
2436 | } |
|
|
2437 | |
495 | /*****************************************************************************/ |
2438 | /*****************************************************************************/ |
496 | |
2439 | |
|
|
2440 | /* |
|
|
2441 | * the heap functions want a real array index. array index 0 is guaranteed to not |
|
|
2442 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
|
|
2443 | * the branching factor of the d-tree. |
|
|
2444 | */ |
|
|
2445 | |
|
|
2446 | /* |
|
|
2447 | * at the moment we allow libev the luxury of two heaps, |
|
|
2448 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
|
|
2449 | * which is more cache-efficient. |
|
|
2450 | * the difference is about 5% with 50000+ watchers. |
|
|
2451 | */ |
|
|
2452 | #if EV_USE_4HEAP |
|
|
2453 | |
|
|
2454 | #define DHEAP 4 |
|
|
2455 | #define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
|
|
2456 | #define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) |
|
|
2457 | #define UPHEAP_DONE(p,k) ((p) == (k)) |
|
|
2458 | |
|
|
2459 | /* away from the root */ |
|
|
2460 | inline_speed void |
|
|
2461 | downheap (ANHE *heap, int N, int k) |
|
|
2462 | { |
|
|
2463 | ANHE he = heap [k]; |
|
|
2464 | ANHE *E = heap + N + HEAP0; |
|
|
2465 | |
|
|
2466 | for (;;) |
|
|
2467 | { |
|
|
2468 | ev_tstamp minat; |
|
|
2469 | ANHE *minpos; |
|
|
2470 | ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; |
|
|
2471 | |
|
|
2472 | /* find minimum child */ |
|
|
2473 | if (ecb_expect_true (pos + DHEAP - 1 < E)) |
|
|
2474 | { |
|
|
2475 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
2476 | if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
2477 | if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
2478 | if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
2479 | } |
|
|
2480 | else if (pos < E) |
|
|
2481 | { |
|
|
2482 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
2483 | if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
2484 | if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
2485 | if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
2486 | } |
|
|
2487 | else |
|
|
2488 | break; |
|
|
2489 | |
|
|
2490 | if (ANHE_at (he) <= minat) |
|
|
2491 | break; |
|
|
2492 | |
|
|
2493 | heap [k] = *minpos; |
|
|
2494 | ev_active (ANHE_w (*minpos)) = k; |
|
|
2495 | |
|
|
2496 | k = minpos - heap; |
|
|
2497 | } |
|
|
2498 | |
|
|
2499 | heap [k] = he; |
|
|
2500 | ev_active (ANHE_w (he)) = k; |
|
|
2501 | } |
|
|
2502 | |
|
|
2503 | #else /* not 4HEAP */ |
|
|
2504 | |
|
|
2505 | #define HEAP0 1 |
|
|
2506 | #define HPARENT(k) ((k) >> 1) |
|
|
2507 | #define UPHEAP_DONE(p,k) (!(p)) |
|
|
2508 | |
|
|
2509 | /* away from the root */ |
|
|
2510 | inline_speed void |
|
|
2511 | downheap (ANHE *heap, int N, int k) |
|
|
2512 | { |
|
|
2513 | ANHE he = heap [k]; |
|
|
2514 | |
|
|
2515 | for (;;) |
|
|
2516 | { |
|
|
2517 | int c = k << 1; |
|
|
2518 | |
|
|
2519 | if (c >= N + HEAP0) |
|
|
2520 | break; |
|
|
2521 | |
|
|
2522 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
|
|
2523 | ? 1 : 0; |
|
|
2524 | |
|
|
2525 | if (ANHE_at (he) <= ANHE_at (heap [c])) |
|
|
2526 | break; |
|
|
2527 | |
|
|
2528 | heap [k] = heap [c]; |
|
|
2529 | ev_active (ANHE_w (heap [k])) = k; |
|
|
2530 | |
|
|
2531 | k = c; |
|
|
2532 | } |
|
|
2533 | |
|
|
2534 | heap [k] = he; |
|
|
2535 | ev_active (ANHE_w (he)) = k; |
|
|
2536 | } |
|
|
2537 | #endif |
|
|
2538 | |
|
|
2539 | /* towards the root */ |
|
|
2540 | inline_speed void |
|
|
2541 | upheap (ANHE *heap, int k) |
|
|
2542 | { |
|
|
2543 | ANHE he = heap [k]; |
|
|
2544 | |
|
|
2545 | for (;;) |
|
|
2546 | { |
|
|
2547 | int p = HPARENT (k); |
|
|
2548 | |
|
|
2549 | if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he)) |
|
|
2550 | break; |
|
|
2551 | |
|
|
2552 | heap [k] = heap [p]; |
|
|
2553 | ev_active (ANHE_w (heap [k])) = k; |
|
|
2554 | k = p; |
|
|
2555 | } |
|
|
2556 | |
|
|
2557 | heap [k] = he; |
|
|
2558 | ev_active (ANHE_w (he)) = k; |
|
|
2559 | } |
|
|
2560 | |
|
|
2561 | /* move an element suitably so it is in a correct place */ |
|
|
2562 | inline_size void |
|
|
2563 | adjustheap (ANHE *heap, int N, int k) |
|
|
2564 | { |
|
|
2565 | if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)])) |
|
|
2566 | upheap (heap, k); |
|
|
2567 | else |
|
|
2568 | downheap (heap, N, k); |
|
|
2569 | } |
|
|
2570 | |
|
|
2571 | /* rebuild the heap: this function is used only once and executed rarely */ |
|
|
2572 | inline_size void |
|
|
2573 | reheap (ANHE *heap, int N) |
|
|
2574 | { |
|
|
2575 | int i; |
|
|
2576 | |
|
|
2577 | /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ |
|
|
2578 | /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ |
|
|
2579 | for (i = 0; i < N; ++i) |
|
|
2580 | upheap (heap, i + HEAP0); |
|
|
2581 | } |
|
|
2582 | |
|
|
2583 | /*****************************************************************************/ |
|
|
2584 | |
|
|
2585 | /* associate signal watchers to a signal signal */ |
|
|
2586 | typedef struct |
|
|
2587 | { |
|
|
2588 | EV_ATOMIC_T pending; |
|
|
2589 | #if EV_MULTIPLICITY |
|
|
2590 | EV_P; |
|
|
2591 | #endif |
|
|
2592 | WL head; |
|
|
2593 | } ANSIG; |
|
|
2594 | |
|
|
2595 | static ANSIG signals [EV_NSIG - 1]; |
|
|
2596 | |
|
|
2597 | /*****************************************************************************/ |
|
|
2598 | |
|
|
2599 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
2600 | |
|
|
2601 | ecb_noinline ecb_cold |
497 | static void |
2602 | static void |
498 | upheap (WT *heap, int k) |
2603 | evpipe_init (EV_P) |
499 | { |
2604 | { |
500 | WT w = heap [k]; |
2605 | if (!ev_is_active (&pipe_w)) |
501 | |
|
|
502 | while (k && heap [k >> 1]->at > w->at) |
|
|
503 | { |
|
|
504 | heap [k] = heap [k >> 1]; |
|
|
505 | ((W)heap [k])->active = k + 1; |
|
|
506 | k >>= 1; |
|
|
507 | } |
2606 | { |
|
|
2607 | int fds [2]; |
508 | |
2608 | |
509 | heap [k] = w; |
2609 | # if EV_USE_EVENTFD |
510 | ((W)heap [k])->active = k + 1; |
2610 | fds [0] = -1; |
|
|
2611 | fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
|
|
2612 | if (fds [1] < 0 && errno == EINVAL) |
|
|
2613 | fds [1] = eventfd (0, 0); |
511 | |
2614 | |
512 | } |
2615 | if (fds [1] < 0) |
|
|
2616 | # endif |
|
|
2617 | { |
|
|
2618 | while (pipe (fds)) |
|
|
2619 | ev_syserr ("(libev) error creating signal/async pipe"); |
513 | |
2620 | |
|
|
2621 | fd_intern (fds [0]); |
|
|
2622 | } |
|
|
2623 | |
|
|
2624 | evpipe [0] = fds [0]; |
|
|
2625 | |
|
|
2626 | if (evpipe [1] < 0) |
|
|
2627 | evpipe [1] = fds [1]; /* first call, set write fd */ |
|
|
2628 | else |
|
|
2629 | { |
|
|
2630 | /* on subsequent calls, do not change evpipe [1] */ |
|
|
2631 | /* so that evpipe_write can always rely on its value. */ |
|
|
2632 | /* this branch does not do anything sensible on windows, */ |
|
|
2633 | /* so must not be executed on windows */ |
|
|
2634 | |
|
|
2635 | dup2 (fds [1], evpipe [1]); |
|
|
2636 | close (fds [1]); |
|
|
2637 | } |
|
|
2638 | |
|
|
2639 | fd_intern (evpipe [1]); |
|
|
2640 | |
|
|
2641 | ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ); |
|
|
2642 | ev_io_start (EV_A_ &pipe_w); |
|
|
2643 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
2644 | } |
|
|
2645 | } |
|
|
2646 | |
|
|
2647 | inline_speed void |
|
|
2648 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
2649 | { |
|
|
2650 | ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ |
|
|
2651 | |
|
|
2652 | if (ecb_expect_true (*flag)) |
|
|
2653 | return; |
|
|
2654 | |
|
|
2655 | *flag = 1; |
|
|
2656 | ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ |
|
|
2657 | |
|
|
2658 | pipe_write_skipped = 1; |
|
|
2659 | |
|
|
2660 | ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */ |
|
|
2661 | |
|
|
2662 | if (pipe_write_wanted) |
|
|
2663 | { |
|
|
2664 | int old_errno; |
|
|
2665 | |
|
|
2666 | pipe_write_skipped = 0; |
|
|
2667 | ECB_MEMORY_FENCE_RELEASE; |
|
|
2668 | |
|
|
2669 | old_errno = errno; /* save errno because write will clobber it */ |
|
|
2670 | |
|
|
2671 | #if EV_USE_EVENTFD |
|
|
2672 | if (evpipe [0] < 0) |
|
|
2673 | { |
|
|
2674 | uint64_t counter = 1; |
|
|
2675 | write (evpipe [1], &counter, sizeof (uint64_t)); |
|
|
2676 | } |
|
|
2677 | else |
|
|
2678 | #endif |
|
|
2679 | { |
|
|
2680 | #ifdef _WIN32 |
|
|
2681 | WSABUF buf; |
|
|
2682 | DWORD sent; |
|
|
2683 | buf.buf = (char *)&buf; |
|
|
2684 | buf.len = 1; |
|
|
2685 | WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); |
|
|
2686 | #else |
|
|
2687 | write (evpipe [1], &(evpipe [1]), 1); |
|
|
2688 | #endif |
|
|
2689 | } |
|
|
2690 | |
|
|
2691 | errno = old_errno; |
|
|
2692 | } |
|
|
2693 | } |
|
|
2694 | |
|
|
2695 | /* called whenever the libev signal pipe */ |
|
|
2696 | /* got some events (signal, async) */ |
514 | static void |
2697 | static void |
515 | downheap (WT *heap, int N, int k) |
2698 | pipecb (EV_P_ ev_io *iow, int revents) |
516 | { |
2699 | { |
517 | WT w = heap [k]; |
2700 | int i; |
518 | |
2701 | |
519 | while (k < (N >> 1)) |
2702 | if (revents & EV_READ) |
520 | { |
|
|
521 | int j = k << 1; |
|
|
522 | |
|
|
523 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
|
|
524 | ++j; |
|
|
525 | |
|
|
526 | if (w->at <= heap [j]->at) |
|
|
527 | break; |
|
|
528 | |
|
|
529 | heap [k] = heap [j]; |
|
|
530 | ((W)heap [k])->active = k + 1; |
|
|
531 | k = j; |
|
|
532 | } |
2703 | { |
533 | |
2704 | #if EV_USE_EVENTFD |
534 | heap [k] = w; |
2705 | if (evpipe [0] < 0) |
535 | ((W)heap [k])->active = k + 1; |
2706 | { |
536 | } |
2707 | uint64_t counter; |
537 | |
2708 | read (evpipe [1], &counter, sizeof (uint64_t)); |
538 | inline void |
2709 | } |
539 | adjustheap (WT *heap, int N, int k, ev_tstamp at) |
|
|
540 | { |
|
|
541 | ev_tstamp old_at = heap [k]->at; |
|
|
542 | heap [k]->at = at; |
|
|
543 | |
|
|
544 | if (old_at < at) |
|
|
545 | downheap (heap, N, k); |
|
|
546 | else |
2710 | else |
547 | upheap (heap, k); |
2711 | #endif |
|
|
2712 | { |
|
|
2713 | char dummy[4]; |
|
|
2714 | #ifdef _WIN32 |
|
|
2715 | WSABUF buf; |
|
|
2716 | DWORD recvd; |
|
|
2717 | DWORD flags = 0; |
|
|
2718 | buf.buf = dummy; |
|
|
2719 | buf.len = sizeof (dummy); |
|
|
2720 | WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0); |
|
|
2721 | #else |
|
|
2722 | read (evpipe [0], &dummy, sizeof (dummy)); |
|
|
2723 | #endif |
|
|
2724 | } |
|
|
2725 | } |
|
|
2726 | |
|
|
2727 | pipe_write_skipped = 0; |
|
|
2728 | |
|
|
2729 | ECB_MEMORY_FENCE; /* push out skipped, acquire flags */ |
|
|
2730 | |
|
|
2731 | #if EV_SIGNAL_ENABLE |
|
|
2732 | if (sig_pending) |
|
|
2733 | { |
|
|
2734 | sig_pending = 0; |
|
|
2735 | |
|
|
2736 | ECB_MEMORY_FENCE; |
|
|
2737 | |
|
|
2738 | for (i = EV_NSIG - 1; i--; ) |
|
|
2739 | if (ecb_expect_false (signals [i].pending)) |
|
|
2740 | ev_feed_signal_event (EV_A_ i + 1); |
|
|
2741 | } |
|
|
2742 | #endif |
|
|
2743 | |
|
|
2744 | #if EV_ASYNC_ENABLE |
|
|
2745 | if (async_pending) |
|
|
2746 | { |
|
|
2747 | async_pending = 0; |
|
|
2748 | |
|
|
2749 | ECB_MEMORY_FENCE; |
|
|
2750 | |
|
|
2751 | for (i = asynccnt; i--; ) |
|
|
2752 | if (asyncs [i]->sent) |
|
|
2753 | { |
|
|
2754 | asyncs [i]->sent = 0; |
|
|
2755 | ECB_MEMORY_FENCE_RELEASE; |
|
|
2756 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
2757 | } |
|
|
2758 | } |
|
|
2759 | #endif |
548 | } |
2760 | } |
549 | |
2761 | |
550 | /*****************************************************************************/ |
2762 | /*****************************************************************************/ |
551 | |
2763 | |
552 | typedef struct |
2764 | void |
|
|
2765 | ev_feed_signal (int signum) EV_NOEXCEPT |
553 | { |
2766 | { |
554 | WL head; |
2767 | #if EV_MULTIPLICITY |
555 | sig_atomic_t volatile gotsig; |
2768 | EV_P; |
556 | } ANSIG; |
2769 | ECB_MEMORY_FENCE_ACQUIRE; |
|
|
2770 | EV_A = signals [signum - 1].loop; |
557 | |
2771 | |
558 | static ANSIG *signals; |
2772 | if (!EV_A) |
559 | static int signalmax; |
2773 | return; |
|
|
2774 | #endif |
560 | |
2775 | |
561 | static int sigpipe [2]; |
2776 | signals [signum - 1].pending = 1; |
562 | static sig_atomic_t volatile gotsig; |
2777 | evpipe_write (EV_A_ &sig_pending); |
563 | static struct ev_io sigev; |
2778 | } |
564 | |
2779 | |
565 | static void |
2780 | static void |
566 | signals_init (ANSIG *base, int count) |
|
|
567 | { |
|
|
568 | while (count--) |
|
|
569 | { |
|
|
570 | base->head = 0; |
|
|
571 | base->gotsig = 0; |
|
|
572 | |
|
|
573 | ++base; |
|
|
574 | } |
|
|
575 | } |
|
|
576 | |
|
|
577 | static void |
|
|
578 | sighandler (int signum) |
2781 | ev_sighandler (int signum) |
579 | { |
2782 | { |
580 | #if WIN32 |
|
|
581 | signal (signum, sighandler); |
|
|
582 | #endif |
|
|
583 | |
|
|
584 | signals [signum - 1].gotsig = 1; |
|
|
585 | |
|
|
586 | if (!gotsig) |
|
|
587 | { |
|
|
588 | int old_errno = errno; |
|
|
589 | gotsig = 1; |
|
|
590 | #ifdef WIN32 |
2783 | #ifdef _WIN32 |
591 | send (sigpipe [1], &signum, 1, MSG_DONTWAIT); |
2784 | signal (signum, ev_sighandler); |
592 | #else |
|
|
593 | write (sigpipe [1], &signum, 1); |
|
|
594 | #endif |
2785 | #endif |
595 | errno = old_errno; |
|
|
596 | } |
|
|
597 | } |
|
|
598 | |
2786 | |
|
|
2787 | ev_feed_signal (signum); |
|
|
2788 | } |
|
|
2789 | |
|
|
2790 | ecb_noinline |
599 | void |
2791 | void |
600 | ev_feed_signal_event (EV_P_ int signum) |
2792 | ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT |
601 | { |
2793 | { |
602 | WL w; |
2794 | WL w; |
603 | |
2795 | |
|
|
2796 | if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG)) |
|
|
2797 | return; |
|
|
2798 | |
|
|
2799 | --signum; |
|
|
2800 | |
604 | #if EV_MULTIPLICITY |
2801 | #if EV_MULTIPLICITY |
605 | assert (("feeding signal events is only supported in the default loop", loop == default_loop)); |
2802 | /* it is permissible to try to feed a signal to the wrong loop */ |
606 | #endif |
2803 | /* or, likely more useful, feeding a signal nobody is waiting for */ |
607 | |
2804 | |
608 | --signum; |
2805 | if (ecb_expect_false (signals [signum].loop != EV_A)) |
609 | |
|
|
610 | if (signum < 0 || signum >= signalmax) |
|
|
611 | return; |
2806 | return; |
|
|
2807 | #endif |
612 | |
2808 | |
613 | signals [signum].gotsig = 0; |
2809 | signals [signum].pending = 0; |
|
|
2810 | ECB_MEMORY_FENCE_RELEASE; |
614 | |
2811 | |
615 | for (w = signals [signum].head; w; w = w->next) |
2812 | for (w = signals [signum].head; w; w = w->next) |
616 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
2813 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
617 | } |
2814 | } |
618 | |
2815 | |
|
|
2816 | #if EV_USE_SIGNALFD |
619 | static void |
2817 | static void |
620 | sigcb (EV_P_ struct ev_io *iow, int revents) |
2818 | sigfdcb (EV_P_ ev_io *iow, int revents) |
621 | { |
2819 | { |
622 | int signum; |
2820 | struct signalfd_siginfo si[2], *sip; /* these structs are big */ |
623 | |
2821 | |
624 | #ifdef WIN32 |
2822 | for (;;) |
625 | recv (sigpipe [0], &revents, 1, MSG_DONTWAIT); |
2823 | { |
626 | #else |
2824 | ssize_t res = read (sigfd, si, sizeof (si)); |
627 | read (sigpipe [0], &revents, 1); |
|
|
628 | #endif |
|
|
629 | gotsig = 0; |
|
|
630 | |
2825 | |
631 | for (signum = signalmax; signum--; ) |
2826 | /* not ISO-C, as res might be -1, but works with SuS */ |
632 | if (signals [signum].gotsig) |
2827 | for (sip = si; (char *)sip < (char *)si + res; ++sip) |
633 | ev_feed_signal_event (EV_A_ signum + 1); |
2828 | ev_feed_signal_event (EV_A_ sip->ssi_signo); |
634 | } |
|
|
635 | |
2829 | |
636 | static void |
2830 | if (res < (ssize_t)sizeof (si)) |
637 | siginit (EV_P) |
2831 | break; |
638 | { |
2832 | } |
639 | #ifndef WIN32 |
|
|
640 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
|
|
641 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
642 | |
|
|
643 | /* rather than sort out wether we really need nb, set it */ |
|
|
644 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
|
|
645 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
646 | #endif |
|
|
647 | |
|
|
648 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
649 | ev_io_start (EV_A_ &sigev); |
|
|
650 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
651 | } |
2833 | } |
|
|
2834 | #endif |
|
|
2835 | |
|
|
2836 | #endif |
652 | |
2837 | |
653 | /*****************************************************************************/ |
2838 | /*****************************************************************************/ |
654 | |
2839 | |
655 | static struct ev_child *childs [PID_HASHSIZE]; |
2840 | #if EV_CHILD_ENABLE |
|
|
2841 | static WL childs [EV_PID_HASHSIZE]; |
656 | |
2842 | |
657 | #ifndef WIN32 |
|
|
658 | |
|
|
659 | static struct ev_signal childev; |
2843 | static ev_signal childev; |
|
|
2844 | |
|
|
2845 | #ifndef WIFCONTINUED |
|
|
2846 | # define WIFCONTINUED(status) 0 |
|
|
2847 | #endif |
|
|
2848 | |
|
|
2849 | /* handle a single child status event */ |
|
|
2850 | inline_speed void |
|
|
2851 | child_reap (EV_P_ int chain, int pid, int status) |
|
|
2852 | { |
|
|
2853 | ev_child *w; |
|
|
2854 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
|
|
2855 | |
|
|
2856 | for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
2857 | { |
|
|
2858 | if ((w->pid == pid || !w->pid) |
|
|
2859 | && (!traced || (w->flags & 1))) |
|
|
2860 | { |
|
|
2861 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
|
|
2862 | w->rpid = pid; |
|
|
2863 | w->rstatus = status; |
|
|
2864 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
2865 | } |
|
|
2866 | } |
|
|
2867 | } |
660 | |
2868 | |
661 | #ifndef WCONTINUED |
2869 | #ifndef WCONTINUED |
662 | # define WCONTINUED 0 |
2870 | # define WCONTINUED 0 |
663 | #endif |
2871 | #endif |
664 | |
2872 | |
|
|
2873 | /* called on sigchld etc., calls waitpid */ |
665 | static void |
2874 | static void |
666 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
2875 | childcb (EV_P_ ev_signal *sw, int revents) |
667 | { |
2876 | { |
668 | struct ev_child *w; |
2877 | int pid, status; |
669 | |
2878 | |
670 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
2879 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
671 | if (w->pid == pid || !w->pid) |
2880 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
672 | { |
2881 | if (!WCONTINUED |
673 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
2882 | || errno != EINVAL |
674 | w->rpid = pid; |
2883 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
675 | w->rstatus = status; |
2884 | return; |
|
|
2885 | |
|
|
2886 | /* make sure we are called again until all children have been reaped */ |
|
|
2887 | /* we need to do it this way so that the callback gets called before we continue */ |
676 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
2888 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
677 | } |
2889 | |
|
|
2890 | child_reap (EV_A_ pid, pid, status); |
|
|
2891 | if ((EV_PID_HASHSIZE) > 1) |
|
|
2892 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
678 | } |
2893 | } |
|
|
2894 | |
|
|
2895 | #endif |
|
|
2896 | |
|
|
2897 | /*****************************************************************************/ |
|
|
2898 | |
|
|
2899 | #if EV_USE_TIMERFD |
|
|
2900 | |
|
|
2901 | static void periodics_reschedule (EV_P); |
679 | |
2902 | |
680 | static void |
2903 | static void |
681 | childcb (EV_P_ struct ev_signal *sw, int revents) |
2904 | timerfdcb (EV_P_ ev_io *iow, int revents) |
682 | { |
2905 | { |
683 | int pid, status; |
2906 | struct itimerspec its = { 0 }; |
684 | |
2907 | |
685 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
2908 | /* since we can't easily come zup with a (portable) maximum value of time_t, |
686 | { |
2909 | * we wake up once per month, which hopefully is rare enough to not |
687 | /* make sure we are called again until all childs have been reaped */ |
2910 | * be a problem. */ |
688 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
2911 | its.it_value.tv_sec = ev_rt_now + 86400 * 30; |
|
|
2912 | timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0); |
689 | |
2913 | |
690 | child_reap (EV_A_ sw, pid, pid, status); |
2914 | ev_rt_now = ev_time (); |
691 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
2915 | /* periodics_reschedule only needs ev_rt_now */ |
|
|
2916 | /* but maybe in the future we want the full treatment. */ |
|
|
2917 | /* |
|
|
2918 | now_floor = EV_TS_CONST (0.); |
|
|
2919 | time_update (EV_A_ EV_TSTAMP_HUGE); |
|
|
2920 | */ |
|
|
2921 | periodics_reschedule (EV_A); |
|
|
2922 | } |
|
|
2923 | |
|
|
2924 | ecb_noinline ecb_cold |
|
|
2925 | static void |
|
|
2926 | evtimerfd_init (EV_P) |
|
|
2927 | { |
|
|
2928 | if (!ev_is_active (&timerfd_w)) |
|
|
2929 | { |
|
|
2930 | timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC); |
|
|
2931 | |
|
|
2932 | if (timerfd >= 0) |
|
|
2933 | { |
|
|
2934 | fd_intern (timerfd); /* just to be sure */ |
|
|
2935 | |
|
|
2936 | ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ); |
|
|
2937 | ev_set_priority (&timerfd_w, EV_MINPRI); |
|
|
2938 | ev_io_start (EV_A_ &timerfd_w); |
|
|
2939 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
2940 | |
|
|
2941 | /* (re-) arm timer */ |
|
|
2942 | timerfdcb (EV_A_ 0, 0); |
|
|
2943 | } |
692 | } |
2944 | } |
693 | } |
2945 | } |
694 | |
2946 | |
695 | #endif |
2947 | #endif |
696 | |
2948 | |
697 | /*****************************************************************************/ |
2949 | /*****************************************************************************/ |
698 | |
2950 | |
|
|
2951 | #if EV_USE_IOCP |
|
|
2952 | # include "ev_iocp.c" |
|
|
2953 | #endif |
|
|
2954 | #if EV_USE_PORT |
|
|
2955 | # include "ev_port.c" |
|
|
2956 | #endif |
699 | #if EV_USE_KQUEUE |
2957 | #if EV_USE_KQUEUE |
700 | # include "ev_kqueue.c" |
2958 | # include "ev_kqueue.c" |
701 | #endif |
2959 | #endif |
702 | #if EV_USE_EPOLL |
2960 | #if EV_USE_EPOLL |
703 | # include "ev_epoll.c" |
2961 | # include "ev_epoll.c" |
704 | #endif |
2962 | #endif |
|
|
2963 | #if EV_USE_LINUXAIO |
|
|
2964 | # include "ev_linuxaio.c" |
|
|
2965 | #endif |
|
|
2966 | #if EV_USE_IOURING |
|
|
2967 | # include "ev_iouring.c" |
|
|
2968 | #endif |
705 | #if EV_USE_POLL |
2969 | #if EV_USE_POLL |
706 | # include "ev_poll.c" |
2970 | # include "ev_poll.c" |
707 | #endif |
2971 | #endif |
708 | #if EV_USE_SELECT |
2972 | #if EV_USE_SELECT |
709 | # include "ev_select.c" |
2973 | # include "ev_select.c" |
710 | #endif |
2974 | #endif |
711 | |
2975 | |
712 | int |
2976 | ecb_cold int |
713 | ev_version_major (void) |
2977 | ev_version_major (void) EV_NOEXCEPT |
714 | { |
2978 | { |
715 | return EV_VERSION_MAJOR; |
2979 | return EV_VERSION_MAJOR; |
716 | } |
2980 | } |
717 | |
2981 | |
718 | int |
2982 | ecb_cold int |
719 | ev_version_minor (void) |
2983 | ev_version_minor (void) EV_NOEXCEPT |
720 | { |
2984 | { |
721 | return EV_VERSION_MINOR; |
2985 | return EV_VERSION_MINOR; |
722 | } |
2986 | } |
723 | |
2987 | |
724 | /* return true if we are running with elevated privileges and should ignore env variables */ |
2988 | /* return true if we are running with elevated privileges and should ignore env variables */ |
725 | static int |
2989 | inline_size ecb_cold int |
726 | enable_secure (void) |
2990 | enable_secure (void) |
727 | { |
2991 | { |
728 | #ifdef WIN32 |
2992 | #ifdef _WIN32 |
729 | return 0; |
2993 | return 0; |
730 | #else |
2994 | #else |
731 | return getuid () != geteuid () |
2995 | return getuid () != geteuid () |
732 | || getgid () != getegid (); |
2996 | || getgid () != getegid (); |
733 | #endif |
2997 | #endif |
734 | } |
2998 | } |
735 | |
2999 | |
736 | int |
3000 | ecb_cold |
737 | ev_method (EV_P) |
3001 | unsigned int |
|
|
3002 | ev_supported_backends (void) EV_NOEXCEPT |
738 | { |
3003 | { |
739 | return method; |
3004 | unsigned int flags = 0; |
740 | } |
|
|
741 | |
3005 | |
|
|
3006 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
3007 | if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE; |
|
|
3008 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
3009 | if (EV_USE_LINUXAIO) flags |= EVBACKEND_LINUXAIO; |
|
|
3010 | if (EV_USE_IOURING ) flags |= EVBACKEND_IOURING; |
|
|
3011 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
3012 | if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT; |
|
|
3013 | |
|
|
3014 | return flags; |
|
|
3015 | } |
|
|
3016 | |
|
|
3017 | ecb_cold |
|
|
3018 | unsigned int |
|
|
3019 | ev_recommended_backends (void) EV_NOEXCEPT |
|
|
3020 | { |
|
|
3021 | unsigned int flags = ev_supported_backends (); |
|
|
3022 | |
|
|
3023 | #ifndef __NetBSD__ |
|
|
3024 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
3025 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
3026 | flags &= ~EVBACKEND_KQUEUE; |
|
|
3027 | #endif |
|
|
3028 | #ifdef __APPLE__ |
|
|
3029 | /* only select works correctly on that "unix-certified" platform */ |
|
|
3030 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
|
|
3031 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
|
|
3032 | #endif |
|
|
3033 | #ifdef __FreeBSD__ |
|
|
3034 | flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ |
|
|
3035 | #endif |
|
|
3036 | |
|
|
3037 | /* TODO: linuxaio is very experimental */ |
|
|
3038 | #if !EV_RECOMMEND_LINUXAIO |
|
|
3039 | flags &= ~EVBACKEND_LINUXAIO; |
|
|
3040 | #endif |
|
|
3041 | /* TODO: linuxaio is super experimental */ |
|
|
3042 | #if !EV_RECOMMEND_IOURING |
|
|
3043 | flags &= ~EVBACKEND_IOURING; |
|
|
3044 | #endif |
|
|
3045 | |
|
|
3046 | return flags; |
|
|
3047 | } |
|
|
3048 | |
|
|
3049 | ecb_cold |
|
|
3050 | unsigned int |
|
|
3051 | ev_embeddable_backends (void) EV_NOEXCEPT |
|
|
3052 | { |
|
|
3053 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
|
|
3054 | |
|
|
3055 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
3056 | if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ |
|
|
3057 | flags &= ~EVBACKEND_EPOLL; |
|
|
3058 | |
|
|
3059 | /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */ |
|
|
3060 | |
|
|
3061 | /* EVBACKEND_IOURING is practically embeddable, but the current implementation is not |
|
|
3062 | * because our backend_fd is the epoll fd we need as fallback. |
|
|
3063 | * if the kernel ever is fixed, this might change... |
|
|
3064 | */ |
|
|
3065 | |
|
|
3066 | return flags; |
|
|
3067 | } |
|
|
3068 | |
|
|
3069 | unsigned int |
|
|
3070 | ev_backend (EV_P) EV_NOEXCEPT |
|
|
3071 | { |
|
|
3072 | return backend; |
|
|
3073 | } |
|
|
3074 | |
|
|
3075 | #if EV_FEATURE_API |
|
|
3076 | unsigned int |
|
|
3077 | ev_iteration (EV_P) EV_NOEXCEPT |
|
|
3078 | { |
|
|
3079 | return loop_count; |
|
|
3080 | } |
|
|
3081 | |
|
|
3082 | unsigned int |
|
|
3083 | ev_depth (EV_P) EV_NOEXCEPT |
|
|
3084 | { |
|
|
3085 | return loop_depth; |
|
|
3086 | } |
|
|
3087 | |
|
|
3088 | void |
|
|
3089 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT |
|
|
3090 | { |
|
|
3091 | io_blocktime = interval; |
|
|
3092 | } |
|
|
3093 | |
|
|
3094 | void |
|
|
3095 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT |
|
|
3096 | { |
|
|
3097 | timeout_blocktime = interval; |
|
|
3098 | } |
|
|
3099 | |
|
|
3100 | void |
|
|
3101 | ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT |
|
|
3102 | { |
|
|
3103 | userdata = data; |
|
|
3104 | } |
|
|
3105 | |
|
|
3106 | void * |
|
|
3107 | ev_userdata (EV_P) EV_NOEXCEPT |
|
|
3108 | { |
|
|
3109 | return userdata; |
|
|
3110 | } |
|
|
3111 | |
|
|
3112 | void |
|
|
3113 | ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT |
|
|
3114 | { |
|
|
3115 | invoke_cb = invoke_pending_cb; |
|
|
3116 | } |
|
|
3117 | |
|
|
3118 | void |
|
|
3119 | ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT |
|
|
3120 | { |
|
|
3121 | release_cb = release; |
|
|
3122 | acquire_cb = acquire; |
|
|
3123 | } |
|
|
3124 | #endif |
|
|
3125 | |
|
|
3126 | /* initialise a loop structure, must be zero-initialised */ |
|
|
3127 | ecb_noinline ecb_cold |
742 | static void |
3128 | static void |
743 | loop_init (EV_P_ int methods) |
3129 | loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT |
744 | { |
3130 | { |
745 | if (!method) |
3131 | if (!backend) |
746 | { |
3132 | { |
|
|
3133 | origflags = flags; |
|
|
3134 | |
|
|
3135 | #if EV_USE_REALTIME |
|
|
3136 | if (!have_realtime) |
|
|
3137 | { |
|
|
3138 | struct timespec ts; |
|
|
3139 | |
|
|
3140 | if (!clock_gettime (CLOCK_REALTIME, &ts)) |
|
|
3141 | have_realtime = 1; |
|
|
3142 | } |
|
|
3143 | #endif |
|
|
3144 | |
747 | #if EV_USE_MONOTONIC |
3145 | #if EV_USE_MONOTONIC |
|
|
3146 | if (!have_monotonic) |
748 | { |
3147 | { |
749 | struct timespec ts; |
3148 | struct timespec ts; |
|
|
3149 | |
750 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
3150 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
751 | have_monotonic = 1; |
3151 | have_monotonic = 1; |
752 | } |
3152 | } |
753 | #endif |
3153 | #endif |
754 | |
3154 | |
|
|
3155 | /* pid check not overridable via env */ |
|
|
3156 | #ifndef _WIN32 |
|
|
3157 | if (flags & EVFLAG_FORKCHECK) |
|
|
3158 | curpid = getpid (); |
|
|
3159 | #endif |
|
|
3160 | |
|
|
3161 | if (!(flags & EVFLAG_NOENV) |
|
|
3162 | && !enable_secure () |
|
|
3163 | && getenv ("LIBEV_FLAGS")) |
|
|
3164 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
3165 | |
755 | ev_rt_now = ev_time (); |
3166 | ev_rt_now = ev_time (); |
756 | mn_now = get_clock (); |
3167 | mn_now = get_clock (); |
757 | now_floor = mn_now; |
3168 | now_floor = mn_now; |
758 | rtmn_diff = ev_rt_now - mn_now; |
3169 | rtmn_diff = ev_rt_now - mn_now; |
|
|
3170 | #if EV_FEATURE_API |
|
|
3171 | invoke_cb = ev_invoke_pending; |
|
|
3172 | #endif |
759 | |
3173 | |
760 | if (methods == EVMETHOD_AUTO) |
3174 | io_blocktime = 0.; |
761 | if (!enable_secure () && getenv ("LIBEV_METHODS")) |
3175 | timeout_blocktime = 0.; |
762 | methods = atoi (getenv ("LIBEV_METHODS")); |
3176 | backend = 0; |
763 | else |
3177 | backend_fd = -1; |
764 | methods = EVMETHOD_ANY; |
3178 | sig_pending = 0; |
|
|
3179 | #if EV_ASYNC_ENABLE |
|
|
3180 | async_pending = 0; |
|
|
3181 | #endif |
|
|
3182 | pipe_write_skipped = 0; |
|
|
3183 | pipe_write_wanted = 0; |
|
|
3184 | evpipe [0] = -1; |
|
|
3185 | evpipe [1] = -1; |
|
|
3186 | #if EV_USE_INOTIFY |
|
|
3187 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
|
|
3188 | #endif |
|
|
3189 | #if EV_USE_SIGNALFD |
|
|
3190 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
|
|
3191 | #endif |
|
|
3192 | #if EV_USE_TIMERFD |
|
|
3193 | timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2; |
|
|
3194 | #endif |
765 | |
3195 | |
766 | method = 0; |
3196 | if (!(flags & EVBACKEND_MASK)) |
|
|
3197 | flags |= ev_recommended_backends (); |
|
|
3198 | |
767 | #if EV_USE_WIN32 |
3199 | #if EV_USE_IOCP |
768 | if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); |
3200 | if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); |
|
|
3201 | #endif |
|
|
3202 | #if EV_USE_PORT |
|
|
3203 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
769 | #endif |
3204 | #endif |
770 | #if EV_USE_KQUEUE |
3205 | #if EV_USE_KQUEUE |
771 | if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); |
3206 | if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags); |
|
|
3207 | #endif |
|
|
3208 | #if EV_USE_IOURING |
|
|
3209 | if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags); |
|
|
3210 | #endif |
|
|
3211 | #if EV_USE_LINUXAIO |
|
|
3212 | if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags); |
772 | #endif |
3213 | #endif |
773 | #if EV_USE_EPOLL |
3214 | #if EV_USE_EPOLL |
774 | if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); |
3215 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
775 | #endif |
3216 | #endif |
776 | #if EV_USE_POLL |
3217 | #if EV_USE_POLL |
777 | if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); |
3218 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
778 | #endif |
3219 | #endif |
779 | #if EV_USE_SELECT |
3220 | #if EV_USE_SELECT |
780 | if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); |
3221 | if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags); |
781 | #endif |
3222 | #endif |
782 | |
3223 | |
|
|
3224 | ev_prepare_init (&pending_w, pendingcb); |
|
|
3225 | |
|
|
3226 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
783 | ev_init (&sigev, sigcb); |
3227 | ev_init (&pipe_w, pipecb); |
784 | ev_set_priority (&sigev, EV_MAXPRI); |
3228 | ev_set_priority (&pipe_w, EV_MAXPRI); |
|
|
3229 | #endif |
785 | } |
3230 | } |
786 | } |
3231 | } |
787 | |
3232 | |
|
|
3233 | /* free up a loop structure */ |
|
|
3234 | ecb_cold |
788 | void |
3235 | void |
789 | loop_destroy (EV_P) |
3236 | ev_loop_destroy (EV_P) |
790 | { |
3237 | { |
791 | int i; |
3238 | int i; |
792 | |
3239 | |
|
|
3240 | #if EV_MULTIPLICITY |
|
|
3241 | /* mimic free (0) */ |
|
|
3242 | if (!EV_A) |
|
|
3243 | return; |
|
|
3244 | #endif |
|
|
3245 | |
|
|
3246 | #if EV_CLEANUP_ENABLE |
|
|
3247 | /* queue cleanup watchers (and execute them) */ |
|
|
3248 | if (ecb_expect_false (cleanupcnt)) |
|
|
3249 | { |
|
|
3250 | queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); |
|
|
3251 | EV_INVOKE_PENDING; |
|
|
3252 | } |
|
|
3253 | #endif |
|
|
3254 | |
|
|
3255 | #if EV_CHILD_ENABLE |
|
|
3256 | if (ev_is_default_loop (EV_A) && ev_is_active (&childev)) |
|
|
3257 | { |
|
|
3258 | ev_ref (EV_A); /* child watcher */ |
|
|
3259 | ev_signal_stop (EV_A_ &childev); |
|
|
3260 | } |
|
|
3261 | #endif |
|
|
3262 | |
|
|
3263 | if (ev_is_active (&pipe_w)) |
|
|
3264 | { |
|
|
3265 | /*ev_ref (EV_A);*/ |
|
|
3266 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
|
|
3267 | |
|
|
3268 | if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]); |
|
|
3269 | if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]); |
|
|
3270 | } |
|
|
3271 | |
|
|
3272 | #if EV_USE_SIGNALFD |
|
|
3273 | if (ev_is_active (&sigfd_w)) |
|
|
3274 | close (sigfd); |
|
|
3275 | #endif |
|
|
3276 | |
|
|
3277 | #if EV_USE_TIMERFD |
|
|
3278 | if (ev_is_active (&timerfd_w)) |
|
|
3279 | close (timerfd); |
|
|
3280 | #endif |
|
|
3281 | |
|
|
3282 | #if EV_USE_INOTIFY |
|
|
3283 | if (fs_fd >= 0) |
|
|
3284 | close (fs_fd); |
|
|
3285 | #endif |
|
|
3286 | |
|
|
3287 | if (backend_fd >= 0) |
|
|
3288 | close (backend_fd); |
|
|
3289 | |
793 | #if EV_USE_WIN32 |
3290 | #if EV_USE_IOCP |
794 | if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); |
3291 | if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); |
|
|
3292 | #endif |
|
|
3293 | #if EV_USE_PORT |
|
|
3294 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
795 | #endif |
3295 | #endif |
796 | #if EV_USE_KQUEUE |
3296 | #if EV_USE_KQUEUE |
797 | if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); |
3297 | if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A); |
|
|
3298 | #endif |
|
|
3299 | #if EV_USE_IOURING |
|
|
3300 | if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A); |
|
|
3301 | #endif |
|
|
3302 | #if EV_USE_LINUXAIO |
|
|
3303 | if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A); |
798 | #endif |
3304 | #endif |
799 | #if EV_USE_EPOLL |
3305 | #if EV_USE_EPOLL |
800 | if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); |
3306 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
801 | #endif |
3307 | #endif |
802 | #if EV_USE_POLL |
3308 | #if EV_USE_POLL |
803 | if (method == EVMETHOD_POLL ) poll_destroy (EV_A); |
3309 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
804 | #endif |
3310 | #endif |
805 | #if EV_USE_SELECT |
3311 | #if EV_USE_SELECT |
806 | if (method == EVMETHOD_SELECT) select_destroy (EV_A); |
3312 | if (backend == EVBACKEND_SELECT ) select_destroy (EV_A); |
807 | #endif |
3313 | #endif |
808 | |
3314 | |
809 | for (i = NUMPRI; i--; ) |
3315 | for (i = NUMPRI; i--; ) |
|
|
3316 | { |
810 | array_free (pending, [i]); |
3317 | array_free (pending, [i]); |
|
|
3318 | #if EV_IDLE_ENABLE |
|
|
3319 | array_free (idle, [i]); |
|
|
3320 | #endif |
|
|
3321 | } |
|
|
3322 | |
|
|
3323 | ev_free (anfds); anfds = 0; anfdmax = 0; |
811 | |
3324 | |
812 | /* have to use the microsoft-never-gets-it-right macro */ |
3325 | /* have to use the microsoft-never-gets-it-right macro */ |
813 | array_free_microshit (fdchange); |
3326 | array_free (rfeed, EMPTY); |
814 | array_free_microshit (timer); |
3327 | array_free (fdchange, EMPTY); |
|
|
3328 | array_free (timer, EMPTY); |
815 | #if EV_PERIODICS |
3329 | #if EV_PERIODIC_ENABLE |
816 | array_free_microshit (periodic); |
3330 | array_free (periodic, EMPTY); |
817 | #endif |
3331 | #endif |
818 | array_free_microshit (idle); |
3332 | #if EV_FORK_ENABLE |
819 | array_free_microshit (prepare); |
3333 | array_free (fork, EMPTY); |
820 | array_free_microshit (check); |
3334 | #endif |
|
|
3335 | #if EV_CLEANUP_ENABLE |
|
|
3336 | array_free (cleanup, EMPTY); |
|
|
3337 | #endif |
|
|
3338 | array_free (prepare, EMPTY); |
|
|
3339 | array_free (check, EMPTY); |
|
|
3340 | #if EV_ASYNC_ENABLE |
|
|
3341 | array_free (async, EMPTY); |
|
|
3342 | #endif |
821 | |
3343 | |
822 | method = 0; |
3344 | backend = 0; |
823 | } |
|
|
824 | |
3345 | |
|
|
3346 | #if EV_MULTIPLICITY |
|
|
3347 | if (ev_is_default_loop (EV_A)) |
|
|
3348 | #endif |
|
|
3349 | ev_default_loop_ptr = 0; |
|
|
3350 | #if EV_MULTIPLICITY |
|
|
3351 | else |
|
|
3352 | ev_free (EV_A); |
|
|
3353 | #endif |
|
|
3354 | } |
|
|
3355 | |
|
|
3356 | #if EV_USE_INOTIFY |
|
|
3357 | inline_size void infy_fork (EV_P); |
|
|
3358 | #endif |
|
|
3359 | |
|
|
3360 | inline_size void |
|
|
3361 | loop_fork (EV_P) |
|
|
3362 | { |
|
|
3363 | #if EV_USE_PORT |
|
|
3364 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
3365 | #endif |
|
|
3366 | #if EV_USE_KQUEUE |
|
|
3367 | if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A); |
|
|
3368 | #endif |
|
|
3369 | #if EV_USE_IOURING |
|
|
3370 | if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A); |
|
|
3371 | #endif |
|
|
3372 | #if EV_USE_LINUXAIO |
|
|
3373 | if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A); |
|
|
3374 | #endif |
|
|
3375 | #if EV_USE_EPOLL |
|
|
3376 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
3377 | #endif |
|
|
3378 | #if EV_USE_INOTIFY |
|
|
3379 | infy_fork (EV_A); |
|
|
3380 | #endif |
|
|
3381 | |
|
|
3382 | if (postfork != 2) |
|
|
3383 | { |
|
|
3384 | #if EV_USE_SIGNALFD |
|
|
3385 | /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */ |
|
|
3386 | #endif |
|
|
3387 | |
|
|
3388 | #if EV_USE_TIMERFD |
|
|
3389 | if (ev_is_active (&timerfd_w)) |
|
|
3390 | { |
|
|
3391 | ev_ref (EV_A); |
|
|
3392 | ev_io_stop (EV_A_ &timerfd_w); |
|
|
3393 | |
|
|
3394 | close (timerfd); |
|
|
3395 | timerfd = -2; |
|
|
3396 | |
|
|
3397 | evtimerfd_init (EV_A); |
|
|
3398 | /* reschedule periodics, in case we missed something */ |
|
|
3399 | ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM); |
|
|
3400 | } |
|
|
3401 | #endif |
|
|
3402 | |
|
|
3403 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
3404 | if (ev_is_active (&pipe_w)) |
|
|
3405 | { |
|
|
3406 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
|
|
3407 | |
|
|
3408 | ev_ref (EV_A); |
|
|
3409 | ev_io_stop (EV_A_ &pipe_w); |
|
|
3410 | |
|
|
3411 | if (evpipe [0] >= 0) |
|
|
3412 | EV_WIN32_CLOSE_FD (evpipe [0]); |
|
|
3413 | |
|
|
3414 | evpipe_init (EV_A); |
|
|
3415 | /* iterate over everything, in case we missed something before */ |
|
|
3416 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
3417 | } |
|
|
3418 | #endif |
|
|
3419 | } |
|
|
3420 | |
|
|
3421 | postfork = 0; |
|
|
3422 | } |
|
|
3423 | |
|
|
3424 | #if EV_MULTIPLICITY |
|
|
3425 | |
|
|
3426 | ecb_cold |
|
|
3427 | struct ev_loop * |
|
|
3428 | ev_loop_new (unsigned int flags) EV_NOEXCEPT |
|
|
3429 | { |
|
|
3430 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
3431 | |
|
|
3432 | memset (EV_A, 0, sizeof (struct ev_loop)); |
|
|
3433 | loop_init (EV_A_ flags); |
|
|
3434 | |
|
|
3435 | if (ev_backend (EV_A)) |
|
|
3436 | return EV_A; |
|
|
3437 | |
|
|
3438 | ev_free (EV_A); |
|
|
3439 | return 0; |
|
|
3440 | } |
|
|
3441 | |
|
|
3442 | #endif /* multiplicity */ |
|
|
3443 | |
|
|
3444 | #if EV_VERIFY |
|
|
3445 | ecb_noinline ecb_cold |
825 | static void |
3446 | static void |
826 | loop_fork (EV_P) |
3447 | verify_watcher (EV_P_ W w) |
827 | { |
3448 | { |
828 | #if EV_USE_EPOLL |
3449 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
829 | if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); |
3450 | |
|
|
3451 | if (w->pending) |
|
|
3452 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
|
|
3453 | } |
|
|
3454 | |
|
|
3455 | ecb_noinline ecb_cold |
|
|
3456 | static void |
|
|
3457 | verify_heap (EV_P_ ANHE *heap, int N) |
|
|
3458 | { |
|
|
3459 | int i; |
|
|
3460 | |
|
|
3461 | for (i = HEAP0; i < N + HEAP0; ++i) |
|
|
3462 | { |
|
|
3463 | assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); |
|
|
3464 | assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); |
|
|
3465 | assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); |
|
|
3466 | |
|
|
3467 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
|
|
3468 | } |
|
|
3469 | } |
|
|
3470 | |
|
|
3471 | ecb_noinline ecb_cold |
|
|
3472 | static void |
|
|
3473 | array_verify (EV_P_ W *ws, int cnt) |
|
|
3474 | { |
|
|
3475 | while (cnt--) |
|
|
3476 | { |
|
|
3477 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
|
|
3478 | verify_watcher (EV_A_ ws [cnt]); |
|
|
3479 | } |
|
|
3480 | } |
|
|
3481 | #endif |
|
|
3482 | |
|
|
3483 | #if EV_FEATURE_API |
|
|
3484 | void ecb_cold |
|
|
3485 | ev_verify (EV_P) EV_NOEXCEPT |
|
|
3486 | { |
|
|
3487 | #if EV_VERIFY |
|
|
3488 | int i; |
|
|
3489 | WL w, w2; |
|
|
3490 | |
|
|
3491 | assert (activecnt >= -1); |
|
|
3492 | |
|
|
3493 | assert (fdchangemax >= fdchangecnt); |
|
|
3494 | for (i = 0; i < fdchangecnt; ++i) |
|
|
3495 | assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); |
|
|
3496 | |
|
|
3497 | assert (anfdmax >= 0); |
|
|
3498 | for (i = 0; i < anfdmax; ++i) |
|
|
3499 | { |
|
|
3500 | int j = 0; |
|
|
3501 | |
|
|
3502 | for (w = w2 = anfds [i].head; w; w = w->next) |
|
|
3503 | { |
|
|
3504 | verify_watcher (EV_A_ (W)w); |
|
|
3505 | |
|
|
3506 | if (j++ & 1) |
|
|
3507 | { |
|
|
3508 | assert (("libev: io watcher list contains a loop", w != w2)); |
|
|
3509 | w2 = w2->next; |
|
|
3510 | } |
|
|
3511 | |
|
|
3512 | assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); |
|
|
3513 | assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
|
|
3514 | } |
|
|
3515 | } |
|
|
3516 | |
|
|
3517 | assert (timermax >= timercnt); |
|
|
3518 | verify_heap (EV_A_ timers, timercnt); |
|
|
3519 | |
|
|
3520 | #if EV_PERIODIC_ENABLE |
|
|
3521 | assert (periodicmax >= periodiccnt); |
|
|
3522 | verify_heap (EV_A_ periodics, periodiccnt); |
|
|
3523 | #endif |
|
|
3524 | |
|
|
3525 | for (i = NUMPRI; i--; ) |
|
|
3526 | { |
|
|
3527 | assert (pendingmax [i] >= pendingcnt [i]); |
|
|
3528 | #if EV_IDLE_ENABLE |
|
|
3529 | assert (idleall >= 0); |
|
|
3530 | assert (idlemax [i] >= idlecnt [i]); |
|
|
3531 | array_verify (EV_A_ (W *)idles [i], idlecnt [i]); |
|
|
3532 | #endif |
|
|
3533 | } |
|
|
3534 | |
|
|
3535 | #if EV_FORK_ENABLE |
|
|
3536 | assert (forkmax >= forkcnt); |
|
|
3537 | array_verify (EV_A_ (W *)forks, forkcnt); |
|
|
3538 | #endif |
|
|
3539 | |
|
|
3540 | #if EV_CLEANUP_ENABLE |
|
|
3541 | assert (cleanupmax >= cleanupcnt); |
|
|
3542 | array_verify (EV_A_ (W *)cleanups, cleanupcnt); |
|
|
3543 | #endif |
|
|
3544 | |
|
|
3545 | #if EV_ASYNC_ENABLE |
|
|
3546 | assert (asyncmax >= asynccnt); |
|
|
3547 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
|
|
3548 | #endif |
|
|
3549 | |
|
|
3550 | #if EV_PREPARE_ENABLE |
|
|
3551 | assert (preparemax >= preparecnt); |
|
|
3552 | array_verify (EV_A_ (W *)prepares, preparecnt); |
|
|
3553 | #endif |
|
|
3554 | |
|
|
3555 | #if EV_CHECK_ENABLE |
|
|
3556 | assert (checkmax >= checkcnt); |
|
|
3557 | array_verify (EV_A_ (W *)checks, checkcnt); |
|
|
3558 | #endif |
|
|
3559 | |
|
|
3560 | # if 0 |
|
|
3561 | #if EV_CHILD_ENABLE |
|
|
3562 | for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
3563 | for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) |
|
|
3564 | #endif |
830 | #endif |
3565 | # endif |
831 | #if EV_USE_KQUEUE |
|
|
832 | if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); |
|
|
833 | #endif |
3566 | #endif |
834 | |
|
|
835 | if (ev_is_active (&sigev)) |
|
|
836 | { |
|
|
837 | /* default loop */ |
|
|
838 | |
|
|
839 | ev_ref (EV_A); |
|
|
840 | ev_io_stop (EV_A_ &sigev); |
|
|
841 | close (sigpipe [0]); |
|
|
842 | close (sigpipe [1]); |
|
|
843 | |
|
|
844 | while (pipe (sigpipe)) |
|
|
845 | syserr ("(libev) error creating pipe"); |
|
|
846 | |
|
|
847 | siginit (EV_A); |
|
|
848 | } |
|
|
849 | |
|
|
850 | postfork = 0; |
|
|
851 | } |
3567 | } |
|
|
3568 | #endif |
852 | |
3569 | |
853 | #if EV_MULTIPLICITY |
3570 | #if EV_MULTIPLICITY |
854 | struct ev_loop * |
3571 | ecb_cold |
855 | ev_loop_new (int methods) |
|
|
856 | { |
|
|
857 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
858 | |
|
|
859 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
860 | |
|
|
861 | loop_init (EV_A_ methods); |
|
|
862 | |
|
|
863 | if (ev_method (EV_A)) |
|
|
864 | return loop; |
|
|
865 | |
|
|
866 | return 0; |
|
|
867 | } |
|
|
868 | |
|
|
869 | void |
|
|
870 | ev_loop_destroy (EV_P) |
|
|
871 | { |
|
|
872 | loop_destroy (EV_A); |
|
|
873 | ev_free (loop); |
|
|
874 | } |
|
|
875 | |
|
|
876 | void |
|
|
877 | ev_loop_fork (EV_P) |
|
|
878 | { |
|
|
879 | postfork = 1; |
|
|
880 | } |
|
|
881 | |
|
|
882 | #endif |
|
|
883 | |
|
|
884 | #if EV_MULTIPLICITY |
|
|
885 | struct ev_loop * |
3572 | struct ev_loop * |
886 | #else |
3573 | #else |
887 | int |
3574 | int |
888 | #endif |
3575 | #endif |
889 | ev_default_loop (int methods) |
3576 | ev_default_loop (unsigned int flags) EV_NOEXCEPT |
890 | { |
3577 | { |
891 | if (sigpipe [0] == sigpipe [1]) |
|
|
892 | if (pipe (sigpipe)) |
|
|
893 | return 0; |
|
|
894 | |
|
|
895 | if (!default_loop) |
3578 | if (!ev_default_loop_ptr) |
896 | { |
3579 | { |
897 | #if EV_MULTIPLICITY |
3580 | #if EV_MULTIPLICITY |
898 | struct ev_loop *loop = default_loop = &default_loop_struct; |
3581 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
899 | #else |
3582 | #else |
900 | default_loop = 1; |
3583 | ev_default_loop_ptr = 1; |
901 | #endif |
3584 | #endif |
902 | |
3585 | |
903 | loop_init (EV_A_ methods); |
3586 | loop_init (EV_A_ flags); |
904 | |
3587 | |
905 | if (ev_method (EV_A)) |
3588 | if (ev_backend (EV_A)) |
906 | { |
3589 | { |
907 | siginit (EV_A); |
3590 | #if EV_CHILD_ENABLE |
908 | |
|
|
909 | #ifndef WIN32 |
|
|
910 | ev_signal_init (&childev, childcb, SIGCHLD); |
3591 | ev_signal_init (&childev, childcb, SIGCHLD); |
911 | ev_set_priority (&childev, EV_MAXPRI); |
3592 | ev_set_priority (&childev, EV_MAXPRI); |
912 | ev_signal_start (EV_A_ &childev); |
3593 | ev_signal_start (EV_A_ &childev); |
913 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
3594 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
914 | #endif |
3595 | #endif |
915 | } |
3596 | } |
916 | else |
3597 | else |
917 | default_loop = 0; |
3598 | ev_default_loop_ptr = 0; |
918 | } |
3599 | } |
919 | |
3600 | |
920 | return default_loop; |
3601 | return ev_default_loop_ptr; |
921 | } |
3602 | } |
922 | |
3603 | |
923 | void |
3604 | void |
924 | ev_default_destroy (void) |
3605 | ev_loop_fork (EV_P) EV_NOEXCEPT |
925 | { |
3606 | { |
926 | #if EV_MULTIPLICITY |
|
|
927 | struct ev_loop *loop = default_loop; |
|
|
928 | #endif |
|
|
929 | |
|
|
930 | #ifndef WIN32 |
|
|
931 | ev_ref (EV_A); /* child watcher */ |
|
|
932 | ev_signal_stop (EV_A_ &childev); |
|
|
933 | #endif |
|
|
934 | |
|
|
935 | ev_ref (EV_A); /* signal watcher */ |
|
|
936 | ev_io_stop (EV_A_ &sigev); |
|
|
937 | |
|
|
938 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
939 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
940 | |
|
|
941 | loop_destroy (EV_A); |
|
|
942 | } |
|
|
943 | |
|
|
944 | void |
|
|
945 | ev_default_fork (void) |
|
|
946 | { |
|
|
947 | #if EV_MULTIPLICITY |
|
|
948 | struct ev_loop *loop = default_loop; |
|
|
949 | #endif |
|
|
950 | |
|
|
951 | if (method) |
|
|
952 | postfork = 1; |
3607 | postfork = 1; |
953 | } |
3608 | } |
954 | |
3609 | |
955 | /*****************************************************************************/ |
3610 | /*****************************************************************************/ |
956 | |
3611 | |
957 | static int |
3612 | void |
958 | any_pending (EV_P) |
3613 | ev_invoke (EV_P_ void *w, int revents) |
|
|
3614 | { |
|
|
3615 | EV_CB_INVOKE ((W)w, revents); |
|
|
3616 | } |
|
|
3617 | |
|
|
3618 | unsigned int |
|
|
3619 | ev_pending_count (EV_P) EV_NOEXCEPT |
959 | { |
3620 | { |
960 | int pri; |
3621 | int pri; |
|
|
3622 | unsigned int count = 0; |
961 | |
3623 | |
962 | for (pri = NUMPRI; pri--; ) |
3624 | for (pri = NUMPRI; pri--; ) |
|
|
3625 | count += pendingcnt [pri]; |
|
|
3626 | |
|
|
3627 | return count; |
|
|
3628 | } |
|
|
3629 | |
|
|
3630 | ecb_noinline |
|
|
3631 | void |
|
|
3632 | ev_invoke_pending (EV_P) |
|
|
3633 | { |
|
|
3634 | pendingpri = NUMPRI; |
|
|
3635 | |
|
|
3636 | do |
|
|
3637 | { |
|
|
3638 | --pendingpri; |
|
|
3639 | |
|
|
3640 | /* pendingpri possibly gets modified in the inner loop */ |
|
|
3641 | while (pendingcnt [pendingpri]) |
|
|
3642 | { |
|
|
3643 | ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; |
|
|
3644 | |
|
|
3645 | p->w->pending = 0; |
|
|
3646 | EV_CB_INVOKE (p->w, p->events); |
|
|
3647 | EV_FREQUENT_CHECK; |
|
|
3648 | } |
|
|
3649 | } |
|
|
3650 | while (pendingpri); |
|
|
3651 | } |
|
|
3652 | |
|
|
3653 | #if EV_IDLE_ENABLE |
|
|
3654 | /* make idle watchers pending. this handles the "call-idle */ |
|
|
3655 | /* only when higher priorities are idle" logic */ |
|
|
3656 | inline_size void |
|
|
3657 | idle_reify (EV_P) |
|
|
3658 | { |
|
|
3659 | if (ecb_expect_false (idleall)) |
|
|
3660 | { |
|
|
3661 | int pri; |
|
|
3662 | |
|
|
3663 | for (pri = NUMPRI; pri--; ) |
|
|
3664 | { |
963 | if (pendingcnt [pri]) |
3665 | if (pendingcnt [pri]) |
964 | return 1; |
3666 | break; |
965 | |
3667 | |
966 | return 0; |
3668 | if (idlecnt [pri]) |
|
|
3669 | { |
|
|
3670 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
|
|
3671 | break; |
|
|
3672 | } |
|
|
3673 | } |
|
|
3674 | } |
967 | } |
3675 | } |
|
|
3676 | #endif |
968 | |
3677 | |
|
|
3678 | /* make timers pending */ |
|
|
3679 | inline_size void |
|
|
3680 | timers_reify (EV_P) |
|
|
3681 | { |
|
|
3682 | EV_FREQUENT_CHECK; |
|
|
3683 | |
|
|
3684 | if (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
|
|
3685 | { |
|
|
3686 | do |
|
|
3687 | { |
|
|
3688 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
|
|
3689 | |
|
|
3690 | /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/ |
|
|
3691 | |
|
|
3692 | /* first reschedule or stop timer */ |
|
|
3693 | if (w->repeat) |
|
|
3694 | { |
|
|
3695 | ev_at (w) += w->repeat; |
|
|
3696 | if (ev_at (w) < mn_now) |
|
|
3697 | ev_at (w) = mn_now; |
|
|
3698 | |
|
|
3699 | assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.))); |
|
|
3700 | |
|
|
3701 | ANHE_at_cache (timers [HEAP0]); |
|
|
3702 | downheap (timers, timercnt, HEAP0); |
|
|
3703 | } |
|
|
3704 | else |
|
|
3705 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
3706 | |
|
|
3707 | EV_FREQUENT_CHECK; |
|
|
3708 | feed_reverse (EV_A_ (W)w); |
|
|
3709 | } |
|
|
3710 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); |
|
|
3711 | |
|
|
3712 | feed_reverse_done (EV_A_ EV_TIMER); |
|
|
3713 | } |
|
|
3714 | } |
|
|
3715 | |
|
|
3716 | #if EV_PERIODIC_ENABLE |
|
|
3717 | |
|
|
3718 | ecb_noinline |
969 | static void |
3719 | static void |
970 | call_pending (EV_P) |
3720 | periodic_recalc (EV_P_ ev_periodic *w) |
971 | { |
3721 | { |
|
|
3722 | ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; |
|
|
3723 | ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); |
|
|
3724 | |
|
|
3725 | /* the above almost always errs on the low side */ |
|
|
3726 | while (at <= ev_rt_now) |
|
|
3727 | { |
|
|
3728 | ev_tstamp nat = at + w->interval; |
|
|
3729 | |
|
|
3730 | /* when resolution fails us, we use ev_rt_now */ |
|
|
3731 | if (ecb_expect_false (nat == at)) |
|
|
3732 | { |
|
|
3733 | at = ev_rt_now; |
|
|
3734 | break; |
|
|
3735 | } |
|
|
3736 | |
|
|
3737 | at = nat; |
|
|
3738 | } |
|
|
3739 | |
|
|
3740 | ev_at (w) = at; |
|
|
3741 | } |
|
|
3742 | |
|
|
3743 | /* make periodics pending */ |
|
|
3744 | inline_size void |
|
|
3745 | periodics_reify (EV_P) |
|
|
3746 | { |
|
|
3747 | EV_FREQUENT_CHECK; |
|
|
3748 | |
|
|
3749 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
|
|
3750 | { |
|
|
3751 | do |
|
|
3752 | { |
|
|
3753 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
|
|
3754 | |
|
|
3755 | /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ |
|
|
3756 | |
|
|
3757 | /* first reschedule or stop timer */ |
|
|
3758 | if (w->reschedule_cb) |
|
|
3759 | { |
|
|
3760 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
3761 | |
|
|
3762 | assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
|
|
3763 | |
|
|
3764 | ANHE_at_cache (periodics [HEAP0]); |
|
|
3765 | downheap (periodics, periodiccnt, HEAP0); |
|
|
3766 | } |
|
|
3767 | else if (w->interval) |
|
|
3768 | { |
|
|
3769 | periodic_recalc (EV_A_ w); |
|
|
3770 | ANHE_at_cache (periodics [HEAP0]); |
|
|
3771 | downheap (periodics, periodiccnt, HEAP0); |
|
|
3772 | } |
|
|
3773 | else |
|
|
3774 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
3775 | |
|
|
3776 | EV_FREQUENT_CHECK; |
|
|
3777 | feed_reverse (EV_A_ (W)w); |
|
|
3778 | } |
|
|
3779 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now); |
|
|
3780 | |
|
|
3781 | feed_reverse_done (EV_A_ EV_PERIODIC); |
|
|
3782 | } |
|
|
3783 | } |
|
|
3784 | |
|
|
3785 | /* simply recalculate all periodics */ |
|
|
3786 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
|
|
3787 | ecb_noinline ecb_cold |
|
|
3788 | static void |
|
|
3789 | periodics_reschedule (EV_P) |
|
|
3790 | { |
972 | int pri; |
3791 | int i; |
973 | |
3792 | |
974 | for (pri = NUMPRI; pri--; ) |
3793 | /* adjust periodics after time jump */ |
975 | while (pendingcnt [pri]) |
3794 | for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
|
|
3795 | { |
|
|
3796 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
|
|
3797 | |
|
|
3798 | if (w->reschedule_cb) |
|
|
3799 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
3800 | else if (w->interval) |
|
|
3801 | periodic_recalc (EV_A_ w); |
|
|
3802 | |
|
|
3803 | ANHE_at_cache (periodics [i]); |
|
|
3804 | } |
|
|
3805 | |
|
|
3806 | reheap (periodics, periodiccnt); |
|
|
3807 | } |
|
|
3808 | #endif |
|
|
3809 | |
|
|
3810 | /* adjust all timers by a given offset */ |
|
|
3811 | ecb_noinline ecb_cold |
|
|
3812 | static void |
|
|
3813 | timers_reschedule (EV_P_ ev_tstamp adjust) |
|
|
3814 | { |
|
|
3815 | int i; |
|
|
3816 | |
|
|
3817 | for (i = 0; i < timercnt; ++i) |
|
|
3818 | { |
|
|
3819 | ANHE *he = timers + i + HEAP0; |
|
|
3820 | ANHE_w (*he)->at += adjust; |
|
|
3821 | ANHE_at_cache (*he); |
|
|
3822 | } |
|
|
3823 | } |
|
|
3824 | |
|
|
3825 | /* fetch new monotonic and realtime times from the kernel */ |
|
|
3826 | /* also detect if there was a timejump, and act accordingly */ |
|
|
3827 | inline_speed void |
|
|
3828 | time_update (EV_P_ ev_tstamp max_block) |
|
|
3829 | { |
|
|
3830 | #if EV_USE_MONOTONIC |
|
|
3831 | if (ecb_expect_true (have_monotonic)) |
|
|
3832 | { |
|
|
3833 | int i; |
|
|
3834 | ev_tstamp odiff = rtmn_diff; |
|
|
3835 | |
|
|
3836 | mn_now = get_clock (); |
|
|
3837 | |
|
|
3838 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
3839 | /* interpolate in the meantime */ |
|
|
3840 | if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5))) |
|
|
3841 | { |
|
|
3842 | ev_rt_now = rtmn_diff + mn_now; |
|
|
3843 | return; |
|
|
3844 | } |
|
|
3845 | |
|
|
3846 | now_floor = mn_now; |
|
|
3847 | ev_rt_now = ev_time (); |
|
|
3848 | |
|
|
3849 | /* loop a few times, before making important decisions. |
|
|
3850 | * on the choice of "4": one iteration isn't enough, |
|
|
3851 | * in case we get preempted during the calls to |
|
|
3852 | * ev_time and get_clock. a second call is almost guaranteed |
|
|
3853 | * to succeed in that case, though. and looping a few more times |
|
|
3854 | * doesn't hurt either as we only do this on time-jumps or |
|
|
3855 | * in the unlikely event of having been preempted here. |
|
|
3856 | */ |
|
|
3857 | for (i = 4; --i; ) |
|
|
3858 | { |
|
|
3859 | ev_tstamp diff; |
|
|
3860 | rtmn_diff = ev_rt_now - mn_now; |
|
|
3861 | |
|
|
3862 | diff = odiff - rtmn_diff; |
|
|
3863 | |
|
|
3864 | if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP))) |
|
|
3865 | return; /* all is well */ |
|
|
3866 | |
|
|
3867 | ev_rt_now = ev_time (); |
|
|
3868 | mn_now = get_clock (); |
|
|
3869 | now_floor = mn_now; |
|
|
3870 | } |
|
|
3871 | |
|
|
3872 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
3873 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
3874 | # if EV_PERIODIC_ENABLE |
|
|
3875 | periodics_reschedule (EV_A); |
|
|
3876 | # endif |
|
|
3877 | } |
|
|
3878 | else |
|
|
3879 | #endif |
|
|
3880 | { |
|
|
3881 | ev_rt_now = ev_time (); |
|
|
3882 | |
|
|
3883 | if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP))) |
|
|
3884 | { |
|
|
3885 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
|
|
3886 | timers_reschedule (EV_A_ ev_rt_now - mn_now); |
|
|
3887 | #if EV_PERIODIC_ENABLE |
|
|
3888 | periodics_reschedule (EV_A); |
|
|
3889 | #endif |
|
|
3890 | } |
|
|
3891 | |
|
|
3892 | mn_now = ev_rt_now; |
|
|
3893 | } |
|
|
3894 | } |
|
|
3895 | |
|
|
3896 | int |
|
|
3897 | ev_run (EV_P_ int flags) |
|
|
3898 | { |
|
|
3899 | #if EV_FEATURE_API |
|
|
3900 | ++loop_depth; |
|
|
3901 | #endif |
|
|
3902 | |
|
|
3903 | assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE)); |
|
|
3904 | |
|
|
3905 | loop_done = EVBREAK_CANCEL; |
|
|
3906 | |
|
|
3907 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
|
|
3908 | |
|
|
3909 | do |
|
|
3910 | { |
|
|
3911 | #if EV_VERIFY >= 2 |
|
|
3912 | ev_verify (EV_A); |
|
|
3913 | #endif |
|
|
3914 | |
|
|
3915 | #ifndef _WIN32 |
|
|
3916 | if (ecb_expect_false (curpid)) /* penalise the forking check even more */ |
|
|
3917 | if (ecb_expect_false (getpid () != curpid)) |
|
|
3918 | { |
|
|
3919 | curpid = getpid (); |
|
|
3920 | postfork = 1; |
|
|
3921 | } |
|
|
3922 | #endif |
|
|
3923 | |
|
|
3924 | #if EV_FORK_ENABLE |
|
|
3925 | /* we might have forked, so queue fork handlers */ |
|
|
3926 | if (ecb_expect_false (postfork)) |
|
|
3927 | if (forkcnt) |
|
|
3928 | { |
|
|
3929 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
3930 | EV_INVOKE_PENDING; |
|
|
3931 | } |
|
|
3932 | #endif |
|
|
3933 | |
|
|
3934 | #if EV_PREPARE_ENABLE |
|
|
3935 | /* queue prepare watchers (and execute them) */ |
|
|
3936 | if (ecb_expect_false (preparecnt)) |
|
|
3937 | { |
|
|
3938 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
|
|
3939 | EV_INVOKE_PENDING; |
|
|
3940 | } |
|
|
3941 | #endif |
|
|
3942 | |
|
|
3943 | if (ecb_expect_false (loop_done)) |
|
|
3944 | break; |
|
|
3945 | |
|
|
3946 | /* we might have forked, so reify kernel state if necessary */ |
|
|
3947 | if (ecb_expect_false (postfork)) |
|
|
3948 | loop_fork (EV_A); |
|
|
3949 | |
|
|
3950 | /* update fd-related kernel structures */ |
|
|
3951 | fd_reify (EV_A); |
|
|
3952 | |
|
|
3953 | /* calculate blocking time */ |
976 | { |
3954 | { |
977 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
3955 | ev_tstamp waittime = 0.; |
|
|
3956 | ev_tstamp sleeptime = 0.; |
978 | |
3957 | |
979 | if (p->w) |
3958 | /* remember old timestamp for io_blocktime calculation */ |
|
|
3959 | ev_tstamp prev_mn_now = mn_now; |
|
|
3960 | |
|
|
3961 | /* update time to cancel out callback processing overhead */ |
|
|
3962 | time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE)); |
|
|
3963 | |
|
|
3964 | /* from now on, we want a pipe-wake-up */ |
|
|
3965 | pipe_write_wanted = 1; |
|
|
3966 | |
|
|
3967 | ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ |
|
|
3968 | |
|
|
3969 | if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
980 | { |
3970 | { |
981 | p->w->pending = 0; |
3971 | waittime = EV_TS_CONST (MAX_BLOCKTIME); |
982 | EV_CB_INVOKE (p->w, p->events); |
3972 | |
|
|
3973 | if (timercnt) |
|
|
3974 | { |
|
|
3975 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; |
|
|
3976 | if (waittime > to) waittime = to; |
|
|
3977 | } |
|
|
3978 | |
|
|
3979 | #if EV_PERIODIC_ENABLE |
|
|
3980 | if (periodiccnt) |
|
|
3981 | { |
|
|
3982 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now; |
|
|
3983 | if (waittime > to) waittime = to; |
|
|
3984 | } |
|
|
3985 | #endif |
|
|
3986 | |
|
|
3987 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
|
|
3988 | if (ecb_expect_false (waittime < timeout_blocktime)) |
|
|
3989 | waittime = timeout_blocktime; |
|
|
3990 | |
|
|
3991 | /* now there are two more special cases left, either we have |
|
|
3992 | * already-expired timers, so we should not sleep, or we have timers |
|
|
3993 | * that expire very soon, in which case we need to wait for a minimum |
|
|
3994 | * amount of time for some event loop backends. |
|
|
3995 | */ |
|
|
3996 | if (ecb_expect_false (waittime < backend_mintime)) |
|
|
3997 | waittime = waittime <= EV_TS_CONST (0.) |
|
|
3998 | ? EV_TS_CONST (0.) |
|
|
3999 | : backend_mintime; |
|
|
4000 | |
|
|
4001 | /* extra check because io_blocktime is commonly 0 */ |
|
|
4002 | if (ecb_expect_false (io_blocktime)) |
|
|
4003 | { |
|
|
4004 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
|
|
4005 | |
|
|
4006 | if (sleeptime > waittime - backend_mintime) |
|
|
4007 | sleeptime = waittime - backend_mintime; |
|
|
4008 | |
|
|
4009 | if (ecb_expect_true (sleeptime > EV_TS_CONST (0.))) |
|
|
4010 | { |
|
|
4011 | ev_sleep (sleeptime); |
|
|
4012 | waittime -= sleeptime; |
|
|
4013 | } |
|
|
4014 | } |
983 | } |
4015 | } |
|
|
4016 | |
|
|
4017 | #if EV_FEATURE_API |
|
|
4018 | ++loop_count; |
|
|
4019 | #endif |
|
|
4020 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
|
|
4021 | backend_poll (EV_A_ waittime); |
|
|
4022 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
|
|
4023 | |
|
|
4024 | pipe_write_wanted = 0; /* just an optimisation, no fence needed */ |
|
|
4025 | |
|
|
4026 | ECB_MEMORY_FENCE_ACQUIRE; |
|
|
4027 | if (pipe_write_skipped) |
|
|
4028 | { |
|
|
4029 | assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
|
|
4030 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
4031 | } |
|
|
4032 | |
|
|
4033 | /* update ev_rt_now, do magic */ |
|
|
4034 | time_update (EV_A_ waittime + sleeptime); |
984 | } |
4035 | } |
985 | } |
|
|
986 | |
4036 | |
987 | static void |
4037 | /* queue pending timers and reschedule them */ |
988 | timers_reify (EV_P) |
4038 | timers_reify (EV_A); /* relative timers called last */ |
|
|
4039 | #if EV_PERIODIC_ENABLE |
|
|
4040 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
4041 | #endif |
|
|
4042 | |
|
|
4043 | #if EV_IDLE_ENABLE |
|
|
4044 | /* queue idle watchers unless other events are pending */ |
|
|
4045 | idle_reify (EV_A); |
|
|
4046 | #endif |
|
|
4047 | |
|
|
4048 | #if EV_CHECK_ENABLE |
|
|
4049 | /* queue check watchers, to be executed first */ |
|
|
4050 | if (ecb_expect_false (checkcnt)) |
|
|
4051 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
|
|
4052 | #endif |
|
|
4053 | |
|
|
4054 | EV_INVOKE_PENDING; |
|
|
4055 | } |
|
|
4056 | while (ecb_expect_true ( |
|
|
4057 | activecnt |
|
|
4058 | && !loop_done |
|
|
4059 | && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) |
|
|
4060 | )); |
|
|
4061 | |
|
|
4062 | if (loop_done == EVBREAK_ONE) |
|
|
4063 | loop_done = EVBREAK_CANCEL; |
|
|
4064 | |
|
|
4065 | #if EV_FEATURE_API |
|
|
4066 | --loop_depth; |
|
|
4067 | #endif |
|
|
4068 | |
|
|
4069 | return activecnt; |
|
|
4070 | } |
|
|
4071 | |
|
|
4072 | void |
|
|
4073 | ev_break (EV_P_ int how) EV_NOEXCEPT |
989 | { |
4074 | { |
990 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
4075 | loop_done = how; |
|
|
4076 | } |
|
|
4077 | |
|
|
4078 | void |
|
|
4079 | ev_ref (EV_P) EV_NOEXCEPT |
|
|
4080 | { |
|
|
4081 | ++activecnt; |
|
|
4082 | } |
|
|
4083 | |
|
|
4084 | void |
|
|
4085 | ev_unref (EV_P) EV_NOEXCEPT |
|
|
4086 | { |
|
|
4087 | --activecnt; |
|
|
4088 | } |
|
|
4089 | |
|
|
4090 | void |
|
|
4091 | ev_now_update (EV_P) EV_NOEXCEPT |
|
|
4092 | { |
|
|
4093 | time_update (EV_A_ EV_TSTAMP_HUGE); |
|
|
4094 | } |
|
|
4095 | |
|
|
4096 | void |
|
|
4097 | ev_suspend (EV_P) EV_NOEXCEPT |
|
|
4098 | { |
|
|
4099 | ev_now_update (EV_A); |
|
|
4100 | } |
|
|
4101 | |
|
|
4102 | void |
|
|
4103 | ev_resume (EV_P) EV_NOEXCEPT |
|
|
4104 | { |
|
|
4105 | ev_tstamp mn_prev = mn_now; |
|
|
4106 | |
|
|
4107 | ev_now_update (EV_A); |
|
|
4108 | timers_reschedule (EV_A_ mn_now - mn_prev); |
|
|
4109 | #if EV_PERIODIC_ENABLE |
|
|
4110 | /* TODO: really do this? */ |
|
|
4111 | periodics_reschedule (EV_A); |
|
|
4112 | #endif |
|
|
4113 | } |
|
|
4114 | |
|
|
4115 | /*****************************************************************************/ |
|
|
4116 | /* singly-linked list management, used when the expected list length is short */ |
|
|
4117 | |
|
|
4118 | inline_size void |
|
|
4119 | wlist_add (WL *head, WL elem) |
|
|
4120 | { |
|
|
4121 | elem->next = *head; |
|
|
4122 | *head = elem; |
|
|
4123 | } |
|
|
4124 | |
|
|
4125 | inline_size void |
|
|
4126 | wlist_del (WL *head, WL elem) |
|
|
4127 | { |
|
|
4128 | while (*head) |
|
|
4129 | { |
|
|
4130 | if (ecb_expect_true (*head == elem)) |
|
|
4131 | { |
|
|
4132 | *head = elem->next; |
|
|
4133 | break; |
|
|
4134 | } |
|
|
4135 | |
|
|
4136 | head = &(*head)->next; |
|
|
4137 | } |
|
|
4138 | } |
|
|
4139 | |
|
|
4140 | /* internal, faster, version of ev_clear_pending */ |
|
|
4141 | inline_speed void |
|
|
4142 | clear_pending (EV_P_ W w) |
|
|
4143 | { |
|
|
4144 | if (w->pending) |
|
|
4145 | { |
|
|
4146 | pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w; |
|
|
4147 | w->pending = 0; |
|
|
4148 | } |
|
|
4149 | } |
|
|
4150 | |
|
|
4151 | int |
|
|
4152 | ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT |
|
|
4153 | { |
|
|
4154 | W w_ = (W)w; |
|
|
4155 | int pending = w_->pending; |
|
|
4156 | |
|
|
4157 | if (ecb_expect_true (pending)) |
|
|
4158 | { |
|
|
4159 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
4160 | p->w = (W)&pending_w; |
|
|
4161 | w_->pending = 0; |
|
|
4162 | return p->events; |
|
|
4163 | } |
|
|
4164 | else |
|
|
4165 | return 0; |
|
|
4166 | } |
|
|
4167 | |
|
|
4168 | inline_size void |
|
|
4169 | pri_adjust (EV_P_ W w) |
|
|
4170 | { |
|
|
4171 | int pri = ev_priority (w); |
|
|
4172 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
4173 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
4174 | ev_set_priority (w, pri); |
|
|
4175 | } |
|
|
4176 | |
|
|
4177 | inline_speed void |
|
|
4178 | ev_start (EV_P_ W w, int active) |
|
|
4179 | { |
|
|
4180 | pri_adjust (EV_A_ w); |
|
|
4181 | w->active = active; |
|
|
4182 | ev_ref (EV_A); |
|
|
4183 | } |
|
|
4184 | |
|
|
4185 | inline_size void |
|
|
4186 | ev_stop (EV_P_ W w) |
|
|
4187 | { |
|
|
4188 | ev_unref (EV_A); |
|
|
4189 | w->active = 0; |
|
|
4190 | } |
|
|
4191 | |
|
|
4192 | /*****************************************************************************/ |
|
|
4193 | |
|
|
4194 | ecb_noinline |
|
|
4195 | void |
|
|
4196 | ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT |
|
|
4197 | { |
|
|
4198 | int fd = w->fd; |
|
|
4199 | |
|
|
4200 | if (ecb_expect_false (ev_is_active (w))) |
|
|
4201 | return; |
|
|
4202 | |
|
|
4203 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
|
|
4204 | assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
|
|
4205 | |
|
|
4206 | #if EV_VERIFY >= 2 |
|
|
4207 | assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd))); |
|
|
4208 | #endif |
|
|
4209 | EV_FREQUENT_CHECK; |
|
|
4210 | |
|
|
4211 | ev_start (EV_A_ (W)w, 1); |
|
|
4212 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill); |
|
|
4213 | wlist_add (&anfds[fd].head, (WL)w); |
|
|
4214 | |
|
|
4215 | /* common bug, apparently */ |
|
|
4216 | assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); |
|
|
4217 | |
|
|
4218 | fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); |
|
|
4219 | w->events &= ~EV__IOFDSET; |
|
|
4220 | |
|
|
4221 | EV_FREQUENT_CHECK; |
|
|
4222 | } |
|
|
4223 | |
|
|
4224 | ecb_noinline |
|
|
4225 | void |
|
|
4226 | ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT |
|
|
4227 | { |
|
|
4228 | clear_pending (EV_A_ (W)w); |
|
|
4229 | if (ecb_expect_false (!ev_is_active (w))) |
|
|
4230 | return; |
|
|
4231 | |
|
|
4232 | assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
4233 | |
|
|
4234 | #if EV_VERIFY >= 2 |
|
|
4235 | assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd))); |
|
|
4236 | #endif |
|
|
4237 | EV_FREQUENT_CHECK; |
|
|
4238 | |
|
|
4239 | wlist_del (&anfds[w->fd].head, (WL)w); |
|
|
4240 | ev_stop (EV_A_ (W)w); |
|
|
4241 | |
|
|
4242 | fd_change (EV_A_ w->fd, EV_ANFD_REIFY); |
|
|
4243 | |
|
|
4244 | EV_FREQUENT_CHECK; |
|
|
4245 | } |
|
|
4246 | |
|
|
4247 | ecb_noinline |
|
|
4248 | void |
|
|
4249 | ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT |
|
|
4250 | { |
|
|
4251 | if (ecb_expect_false (ev_is_active (w))) |
|
|
4252 | return; |
|
|
4253 | |
|
|
4254 | ev_at (w) += mn_now; |
|
|
4255 | |
|
|
4256 | assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
|
|
4257 | |
|
|
4258 | EV_FREQUENT_CHECK; |
|
|
4259 | |
|
|
4260 | ++timercnt; |
|
|
4261 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
|
|
4262 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit); |
|
|
4263 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
|
|
4264 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
4265 | upheap (timers, ev_active (w)); |
|
|
4266 | |
|
|
4267 | EV_FREQUENT_CHECK; |
|
|
4268 | |
|
|
4269 | /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
|
|
4270 | } |
|
|
4271 | |
|
|
4272 | ecb_noinline |
|
|
4273 | void |
|
|
4274 | ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT |
|
|
4275 | { |
|
|
4276 | clear_pending (EV_A_ (W)w); |
|
|
4277 | if (ecb_expect_false (!ev_is_active (w))) |
|
|
4278 | return; |
|
|
4279 | |
|
|
4280 | EV_FREQUENT_CHECK; |
|
|
4281 | |
|
|
4282 | { |
|
|
4283 | int active = ev_active (w); |
|
|
4284 | |
|
|
4285 | assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
|
|
4286 | |
|
|
4287 | --timercnt; |
|
|
4288 | |
|
|
4289 | if (ecb_expect_true (active < timercnt + HEAP0)) |
991 | { |
4290 | { |
992 | struct ev_timer *w = timers [0]; |
4291 | timers [active] = timers [timercnt + HEAP0]; |
|
|
4292 | adjustheap (timers, timercnt, active); |
|
|
4293 | } |
|
|
4294 | } |
993 | |
4295 | |
994 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
4296 | ev_at (w) -= mn_now; |
995 | |
4297 | |
996 | /* first reschedule or stop timer */ |
4298 | ev_stop (EV_A_ (W)w); |
|
|
4299 | |
|
|
4300 | EV_FREQUENT_CHECK; |
|
|
4301 | } |
|
|
4302 | |
|
|
4303 | ecb_noinline |
|
|
4304 | void |
|
|
4305 | ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT |
|
|
4306 | { |
|
|
4307 | EV_FREQUENT_CHECK; |
|
|
4308 | |
|
|
4309 | clear_pending (EV_A_ (W)w); |
|
|
4310 | |
|
|
4311 | if (ev_is_active (w)) |
|
|
4312 | { |
997 | if (w->repeat) |
4313 | if (w->repeat) |
998 | { |
4314 | { |
999 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
4315 | ev_at (w) = mn_now + w->repeat; |
1000 | |
4316 | ANHE_at_cache (timers [ev_active (w)]); |
1001 | ((WT)w)->at += w->repeat; |
4317 | adjustheap (timers, timercnt, ev_active (w)); |
1002 | if (((WT)w)->at < mn_now) |
|
|
1003 | ((WT)w)->at = mn_now; |
|
|
1004 | |
|
|
1005 | downheap ((WT *)timers, timercnt, 0); |
|
|
1006 | } |
4318 | } |
1007 | else |
4319 | else |
1008 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
4320 | ev_timer_stop (EV_A_ w); |
1009 | |
|
|
1010 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
1011 | } |
|
|
1012 | } |
|
|
1013 | |
|
|
1014 | #if EV_PERIODICS |
|
|
1015 | static void |
|
|
1016 | periodics_reify (EV_P) |
|
|
1017 | { |
|
|
1018 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
|
|
1019 | { |
4321 | } |
1020 | struct ev_periodic *w = periodics [0]; |
4322 | else if (w->repeat) |
|
|
4323 | { |
|
|
4324 | ev_at (w) = w->repeat; |
|
|
4325 | ev_timer_start (EV_A_ w); |
|
|
4326 | } |
1021 | |
4327 | |
1022 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
4328 | EV_FREQUENT_CHECK; |
|
|
4329 | } |
1023 | |
4330 | |
1024 | /* first reschedule or stop timer */ |
4331 | ev_tstamp |
|
|
4332 | ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT |
|
|
4333 | { |
|
|
4334 | return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.)); |
|
|
4335 | } |
|
|
4336 | |
|
|
4337 | #if EV_PERIODIC_ENABLE |
|
|
4338 | ecb_noinline |
|
|
4339 | void |
|
|
4340 | ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT |
|
|
4341 | { |
|
|
4342 | if (ecb_expect_false (ev_is_active (w))) |
|
|
4343 | return; |
|
|
4344 | |
|
|
4345 | #if EV_USE_TIMERFD |
|
|
4346 | if (timerfd == -2) |
|
|
4347 | evtimerfd_init (EV_A); |
|
|
4348 | #endif |
|
|
4349 | |
1025 | if (w->reschedule_cb) |
4350 | if (w->reschedule_cb) |
1026 | { |
|
|
1027 | ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); |
4351 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
1028 | |
|
|
1029 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
|
|
1030 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1031 | } |
|
|
1032 | else if (w->interval) |
4352 | else if (w->interval) |
1033 | { |
|
|
1034 | ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
|
|
1035 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
|
|
1036 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1037 | } |
|
|
1038 | else |
|
|
1039 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1040 | |
|
|
1041 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
|
|
1042 | } |
4353 | { |
1043 | } |
4354 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
1044 | |
4355 | periodic_recalc (EV_A_ w); |
1045 | static void |
|
|
1046 | periodics_reschedule (EV_P) |
|
|
1047 | { |
|
|
1048 | int i; |
|
|
1049 | |
|
|
1050 | /* adjust periodics after time jump */ |
|
|
1051 | for (i = 0; i < periodiccnt; ++i) |
|
|
1052 | { |
|
|
1053 | struct ev_periodic *w = periodics [i]; |
|
|
1054 | |
|
|
1055 | if (w->reschedule_cb) |
|
|
1056 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1057 | else if (w->interval) |
|
|
1058 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1059 | } |
|
|
1060 | |
|
|
1061 | /* now rebuild the heap */ |
|
|
1062 | for (i = periodiccnt >> 1; i--; ) |
|
|
1063 | downheap ((WT *)periodics, periodiccnt, i); |
|
|
1064 | } |
|
|
1065 | #endif |
|
|
1066 | |
|
|
1067 | inline int |
|
|
1068 | time_update_monotonic (EV_P) |
|
|
1069 | { |
|
|
1070 | mn_now = get_clock (); |
|
|
1071 | |
|
|
1072 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
1073 | { |
|
|
1074 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1075 | return 0; |
|
|
1076 | } |
4356 | } |
1077 | else |
4357 | else |
1078 | { |
4358 | ev_at (w) = w->offset; |
1079 | now_floor = mn_now; |
|
|
1080 | ev_rt_now = ev_time (); |
|
|
1081 | return 1; |
|
|
1082 | } |
|
|
1083 | } |
|
|
1084 | |
4359 | |
1085 | static void |
4360 | EV_FREQUENT_CHECK; |
1086 | time_update (EV_P) |
|
|
1087 | { |
|
|
1088 | int i; |
|
|
1089 | |
4361 | |
1090 | #if EV_USE_MONOTONIC |
4362 | ++periodiccnt; |
1091 | if (expect_true (have_monotonic)) |
4363 | ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); |
1092 | { |
4364 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit); |
1093 | if (time_update_monotonic (EV_A)) |
4365 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
1094 | { |
4366 | ANHE_at_cache (periodics [ev_active (w)]); |
1095 | ev_tstamp odiff = rtmn_diff; |
4367 | upheap (periodics, ev_active (w)); |
1096 | |
4368 | |
1097 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
4369 | EV_FREQUENT_CHECK; |
1098 | { |
|
|
1099 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1100 | |
4370 | |
1101 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
4371 | /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
1102 | return; /* all is well */ |
|
|
1103 | |
|
|
1104 | ev_rt_now = ev_time (); |
|
|
1105 | mn_now = get_clock (); |
|
|
1106 | now_floor = mn_now; |
|
|
1107 | } |
|
|
1108 | |
|
|
1109 | # if EV_PERIODICS |
|
|
1110 | periodics_reschedule (EV_A); |
|
|
1111 | # endif |
|
|
1112 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1113 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
1114 | } |
|
|
1115 | } |
|
|
1116 | else |
|
|
1117 | #endif |
|
|
1118 | { |
|
|
1119 | ev_rt_now = ev_time (); |
|
|
1120 | |
|
|
1121 | if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
|
|
1122 | { |
|
|
1123 | #if EV_PERIODICS |
|
|
1124 | periodics_reschedule (EV_A); |
|
|
1125 | #endif |
|
|
1126 | |
|
|
1127 | /* adjust timers. this is easy, as the offset is the same for all */ |
|
|
1128 | for (i = 0; i < timercnt; ++i) |
|
|
1129 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
|
|
1130 | } |
|
|
1131 | |
|
|
1132 | mn_now = ev_rt_now; |
|
|
1133 | } |
|
|
1134 | } |
4372 | } |
1135 | |
4373 | |
|
|
4374 | ecb_noinline |
1136 | void |
4375 | void |
1137 | ev_ref (EV_P) |
4376 | ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT |
1138 | { |
4377 | { |
1139 | ++activecnt; |
|
|
1140 | } |
|
|
1141 | |
|
|
1142 | void |
|
|
1143 | ev_unref (EV_P) |
|
|
1144 | { |
|
|
1145 | --activecnt; |
|
|
1146 | } |
|
|
1147 | |
|
|
1148 | static int loop_done; |
|
|
1149 | |
|
|
1150 | void |
|
|
1151 | ev_loop (EV_P_ int flags) |
|
|
1152 | { |
|
|
1153 | double block; |
|
|
1154 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
|
|
1155 | |
|
|
1156 | do |
|
|
1157 | { |
|
|
1158 | /* queue check watchers (and execute them) */ |
|
|
1159 | if (expect_false (preparecnt)) |
|
|
1160 | { |
|
|
1161 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
|
|
1162 | call_pending (EV_A); |
|
|
1163 | } |
|
|
1164 | |
|
|
1165 | /* we might have forked, so reify kernel state if necessary */ |
|
|
1166 | if (expect_false (postfork)) |
|
|
1167 | loop_fork (EV_A); |
|
|
1168 | |
|
|
1169 | /* update fd-related kernel structures */ |
|
|
1170 | fd_reify (EV_A); |
|
|
1171 | |
|
|
1172 | /* calculate blocking time */ |
|
|
1173 | |
|
|
1174 | /* we only need this for !monotonic clock or timers, but as we basically |
|
|
1175 | always have timers, we just calculate it always */ |
|
|
1176 | #if EV_USE_MONOTONIC |
|
|
1177 | if (expect_true (have_monotonic)) |
|
|
1178 | time_update_monotonic (EV_A); |
|
|
1179 | else |
|
|
1180 | #endif |
|
|
1181 | { |
|
|
1182 | ev_rt_now = ev_time (); |
|
|
1183 | mn_now = ev_rt_now; |
|
|
1184 | } |
|
|
1185 | |
|
|
1186 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
|
|
1187 | block = 0.; |
|
|
1188 | else |
|
|
1189 | { |
|
|
1190 | block = MAX_BLOCKTIME; |
|
|
1191 | |
|
|
1192 | if (timercnt) |
|
|
1193 | { |
|
|
1194 | ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; |
|
|
1195 | if (block > to) block = to; |
|
|
1196 | } |
|
|
1197 | |
|
|
1198 | #if EV_PERIODICS |
|
|
1199 | if (periodiccnt) |
|
|
1200 | { |
|
|
1201 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; |
|
|
1202 | if (block > to) block = to; |
|
|
1203 | } |
|
|
1204 | #endif |
|
|
1205 | |
|
|
1206 | if (block < 0.) block = 0.; |
|
|
1207 | } |
|
|
1208 | |
|
|
1209 | method_poll (EV_A_ block); |
|
|
1210 | |
|
|
1211 | /* update ev_rt_now, do magic */ |
|
|
1212 | time_update (EV_A); |
|
|
1213 | |
|
|
1214 | /* queue pending timers and reschedule them */ |
|
|
1215 | timers_reify (EV_A); /* relative timers called last */ |
|
|
1216 | #if EV_PERIODICS |
|
|
1217 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
1218 | #endif |
|
|
1219 | |
|
|
1220 | /* queue idle watchers unless io or timers are pending */ |
|
|
1221 | if (idlecnt && !any_pending (EV_A)) |
|
|
1222 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
|
|
1223 | |
|
|
1224 | /* queue check watchers, to be executed first */ |
|
|
1225 | if (checkcnt) |
|
|
1226 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
|
|
1227 | |
|
|
1228 | call_pending (EV_A); |
|
|
1229 | } |
|
|
1230 | while (activecnt && !loop_done); |
|
|
1231 | |
|
|
1232 | if (loop_done != 2) |
|
|
1233 | loop_done = 0; |
|
|
1234 | } |
|
|
1235 | |
|
|
1236 | void |
|
|
1237 | ev_unloop (EV_P_ int how) |
|
|
1238 | { |
|
|
1239 | loop_done = how; |
|
|
1240 | } |
|
|
1241 | |
|
|
1242 | /*****************************************************************************/ |
|
|
1243 | |
|
|
1244 | inline void |
|
|
1245 | wlist_add (WL *head, WL elem) |
|
|
1246 | { |
|
|
1247 | elem->next = *head; |
|
|
1248 | *head = elem; |
|
|
1249 | } |
|
|
1250 | |
|
|
1251 | inline void |
|
|
1252 | wlist_del (WL *head, WL elem) |
|
|
1253 | { |
|
|
1254 | while (*head) |
|
|
1255 | { |
|
|
1256 | if (*head == elem) |
|
|
1257 | { |
|
|
1258 | *head = elem->next; |
|
|
1259 | return; |
|
|
1260 | } |
|
|
1261 | |
|
|
1262 | head = &(*head)->next; |
|
|
1263 | } |
|
|
1264 | } |
|
|
1265 | |
|
|
1266 | inline void |
|
|
1267 | ev_clear_pending (EV_P_ W w) |
4378 | clear_pending (EV_A_ (W)w); |
1268 | { |
4379 | if (ecb_expect_false (!ev_is_active (w))) |
1269 | if (w->pending) |
|
|
1270 | { |
|
|
1271 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
|
|
1272 | w->pending = 0; |
|
|
1273 | } |
|
|
1274 | } |
|
|
1275 | |
|
|
1276 | inline void |
|
|
1277 | ev_start (EV_P_ W w, int active) |
|
|
1278 | { |
|
|
1279 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1280 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1281 | |
|
|
1282 | w->active = active; |
|
|
1283 | ev_ref (EV_A); |
|
|
1284 | } |
|
|
1285 | |
|
|
1286 | inline void |
|
|
1287 | ev_stop (EV_P_ W w) |
|
|
1288 | { |
|
|
1289 | ev_unref (EV_A); |
|
|
1290 | w->active = 0; |
|
|
1291 | } |
|
|
1292 | |
|
|
1293 | /*****************************************************************************/ |
|
|
1294 | |
|
|
1295 | void |
|
|
1296 | ev_io_start (EV_P_ struct ev_io *w) |
|
|
1297 | { |
|
|
1298 | int fd = w->fd; |
|
|
1299 | |
|
|
1300 | if (ev_is_active (w)) |
|
|
1301 | return; |
4380 | return; |
1302 | |
4381 | |
1303 | assert (("ev_io_start called with negative fd", fd >= 0)); |
4382 | EV_FREQUENT_CHECK; |
1304 | |
4383 | |
1305 | ev_start (EV_A_ (W)w, 1); |
4384 | { |
1306 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
4385 | int active = ev_active (w); |
1307 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
|
|
1308 | |
4386 | |
1309 | fd_change (EV_A_ fd); |
4387 | assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
1310 | } |
|
|
1311 | |
4388 | |
1312 | void |
4389 | --periodiccnt; |
1313 | ev_io_stop (EV_P_ struct ev_io *w) |
|
|
1314 | { |
|
|
1315 | ev_clear_pending (EV_A_ (W)w); |
|
|
1316 | if (!ev_is_active (w)) |
|
|
1317 | return; |
|
|
1318 | |
4390 | |
1319 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
4391 | if (ecb_expect_true (active < periodiccnt + HEAP0)) |
|
|
4392 | { |
|
|
4393 | periodics [active] = periodics [periodiccnt + HEAP0]; |
|
|
4394 | adjustheap (periodics, periodiccnt, active); |
|
|
4395 | } |
|
|
4396 | } |
1320 | |
4397 | |
1321 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
|
|
1322 | ev_stop (EV_A_ (W)w); |
4398 | ev_stop (EV_A_ (W)w); |
1323 | |
4399 | |
1324 | fd_change (EV_A_ w->fd); |
4400 | EV_FREQUENT_CHECK; |
1325 | } |
4401 | } |
1326 | |
4402 | |
|
|
4403 | ecb_noinline |
1327 | void |
4404 | void |
1328 | ev_timer_start (EV_P_ struct ev_timer *w) |
|
|
1329 | { |
|
|
1330 | if (ev_is_active (w)) |
|
|
1331 | return; |
|
|
1332 | |
|
|
1333 | ((WT)w)->at += mn_now; |
|
|
1334 | |
|
|
1335 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
|
|
1336 | |
|
|
1337 | ev_start (EV_A_ (W)w, ++timercnt); |
|
|
1338 | array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); |
|
|
1339 | timers [timercnt - 1] = w; |
|
|
1340 | upheap ((WT *)timers, timercnt - 1); |
|
|
1341 | |
|
|
1342 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1343 | } |
|
|
1344 | |
|
|
1345 | void |
|
|
1346 | ev_timer_stop (EV_P_ struct ev_timer *w) |
|
|
1347 | { |
|
|
1348 | ev_clear_pending (EV_A_ (W)w); |
|
|
1349 | if (!ev_is_active (w)) |
|
|
1350 | return; |
|
|
1351 | |
|
|
1352 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1353 | |
|
|
1354 | if (((W)w)->active < timercnt--) |
|
|
1355 | { |
|
|
1356 | timers [((W)w)->active - 1] = timers [timercnt]; |
|
|
1357 | downheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
|
|
1358 | } |
|
|
1359 | |
|
|
1360 | ((WT)w)->at -= mn_now; |
|
|
1361 | |
|
|
1362 | ev_stop (EV_A_ (W)w); |
|
|
1363 | } |
|
|
1364 | |
|
|
1365 | void |
|
|
1366 | ev_timer_again (EV_P_ struct ev_timer *w) |
|
|
1367 | { |
|
|
1368 | if (ev_is_active (w)) |
|
|
1369 | { |
|
|
1370 | if (w->repeat) |
|
|
1371 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat); |
|
|
1372 | else |
|
|
1373 | ev_timer_stop (EV_A_ w); |
|
|
1374 | } |
|
|
1375 | else if (w->repeat) |
|
|
1376 | ev_timer_start (EV_A_ w); |
|
|
1377 | } |
|
|
1378 | |
|
|
1379 | #if EV_PERIODICS |
|
|
1380 | void |
|
|
1381 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
|
|
1382 | { |
|
|
1383 | if (ev_is_active (w)) |
|
|
1384 | return; |
|
|
1385 | |
|
|
1386 | if (w->reschedule_cb) |
|
|
1387 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1388 | else if (w->interval) |
|
|
1389 | { |
|
|
1390 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
|
|
1391 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
|
|
1392 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1393 | } |
|
|
1394 | |
|
|
1395 | ev_start (EV_A_ (W)w, ++periodiccnt); |
|
|
1396 | array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); |
|
|
1397 | periodics [periodiccnt - 1] = w; |
|
|
1398 | upheap ((WT *)periodics, periodiccnt - 1); |
|
|
1399 | |
|
|
1400 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1401 | } |
|
|
1402 | |
|
|
1403 | void |
|
|
1404 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
|
|
1405 | { |
|
|
1406 | ev_clear_pending (EV_A_ (W)w); |
|
|
1407 | if (!ev_is_active (w)) |
|
|
1408 | return; |
|
|
1409 | |
|
|
1410 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1411 | |
|
|
1412 | if (((W)w)->active < periodiccnt--) |
|
|
1413 | { |
|
|
1414 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
|
|
1415 | downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
|
|
1416 | } |
|
|
1417 | |
|
|
1418 | ev_stop (EV_A_ (W)w); |
|
|
1419 | } |
|
|
1420 | |
|
|
1421 | void |
|
|
1422 | ev_periodic_again (EV_P_ struct ev_periodic *w) |
4405 | ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT |
1423 | { |
4406 | { |
1424 | /* TODO: use adjustheap and recalculation */ |
4407 | /* TODO: use adjustheap and recalculation */ |
1425 | ev_periodic_stop (EV_A_ w); |
4408 | ev_periodic_stop (EV_A_ w); |
1426 | ev_periodic_start (EV_A_ w); |
4409 | ev_periodic_start (EV_A_ w); |
1427 | } |
4410 | } |
1428 | #endif |
4411 | #endif |
1429 | |
4412 | |
1430 | void |
|
|
1431 | ev_idle_start (EV_P_ struct ev_idle *w) |
|
|
1432 | { |
|
|
1433 | if (ev_is_active (w)) |
|
|
1434 | return; |
|
|
1435 | |
|
|
1436 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1437 | array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void)); |
|
|
1438 | idles [idlecnt - 1] = w; |
|
|
1439 | } |
|
|
1440 | |
|
|
1441 | void |
|
|
1442 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1443 | { |
|
|
1444 | ev_clear_pending (EV_A_ (W)w); |
|
|
1445 | if (ev_is_active (w)) |
|
|
1446 | return; |
|
|
1447 | |
|
|
1448 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
|
|
1449 | ev_stop (EV_A_ (W)w); |
|
|
1450 | } |
|
|
1451 | |
|
|
1452 | void |
|
|
1453 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1454 | { |
|
|
1455 | if (ev_is_active (w)) |
|
|
1456 | return; |
|
|
1457 | |
|
|
1458 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1459 | array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void)); |
|
|
1460 | prepares [preparecnt - 1] = w; |
|
|
1461 | } |
|
|
1462 | |
|
|
1463 | void |
|
|
1464 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1465 | { |
|
|
1466 | ev_clear_pending (EV_A_ (W)w); |
|
|
1467 | if (ev_is_active (w)) |
|
|
1468 | return; |
|
|
1469 | |
|
|
1470 | prepares [((W)w)->active - 1] = prepares [--preparecnt]; |
|
|
1471 | ev_stop (EV_A_ (W)w); |
|
|
1472 | } |
|
|
1473 | |
|
|
1474 | void |
|
|
1475 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1476 | { |
|
|
1477 | if (ev_is_active (w)) |
|
|
1478 | return; |
|
|
1479 | |
|
|
1480 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1481 | array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void)); |
|
|
1482 | checks [checkcnt - 1] = w; |
|
|
1483 | } |
|
|
1484 | |
|
|
1485 | void |
|
|
1486 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1487 | { |
|
|
1488 | ev_clear_pending (EV_A_ (W)w); |
|
|
1489 | if (!ev_is_active (w)) |
|
|
1490 | return; |
|
|
1491 | |
|
|
1492 | checks [((W)w)->active - 1] = checks [--checkcnt]; |
|
|
1493 | ev_stop (EV_A_ (W)w); |
|
|
1494 | } |
|
|
1495 | |
|
|
1496 | #ifndef SA_RESTART |
4413 | #ifndef SA_RESTART |
1497 | # define SA_RESTART 0 |
4414 | # define SA_RESTART 0 |
1498 | #endif |
4415 | #endif |
1499 | |
4416 | |
|
|
4417 | #if EV_SIGNAL_ENABLE |
|
|
4418 | |
|
|
4419 | ecb_noinline |
1500 | void |
4420 | void |
1501 | ev_signal_start (EV_P_ struct ev_signal *w) |
4421 | ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT |
1502 | { |
4422 | { |
|
|
4423 | if (ecb_expect_false (ev_is_active (w))) |
|
|
4424 | return; |
|
|
4425 | |
|
|
4426 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); |
|
|
4427 | |
1503 | #if EV_MULTIPLICITY |
4428 | #if EV_MULTIPLICITY |
1504 | assert (("signal watchers are only supported in the default loop", loop == default_loop)); |
4429 | assert (("libev: a signal must not be attached to two different loops", |
|
|
4430 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
|
|
4431 | |
|
|
4432 | signals [w->signum - 1].loop = EV_A; |
|
|
4433 | ECB_MEMORY_FENCE_RELEASE; |
|
|
4434 | #endif |
|
|
4435 | |
|
|
4436 | EV_FREQUENT_CHECK; |
|
|
4437 | |
|
|
4438 | #if EV_USE_SIGNALFD |
|
|
4439 | if (sigfd == -2) |
|
|
4440 | { |
|
|
4441 | sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC); |
|
|
4442 | if (sigfd < 0 && errno == EINVAL) |
|
|
4443 | sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */ |
|
|
4444 | |
|
|
4445 | if (sigfd >= 0) |
|
|
4446 | { |
|
|
4447 | fd_intern (sigfd); /* doing it twice will not hurt */ |
|
|
4448 | |
|
|
4449 | sigemptyset (&sigfd_set); |
|
|
4450 | |
|
|
4451 | ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ); |
|
|
4452 | ev_set_priority (&sigfd_w, EV_MAXPRI); |
|
|
4453 | ev_io_start (EV_A_ &sigfd_w); |
|
|
4454 | ev_unref (EV_A); /* signalfd watcher should not keep loop alive */ |
|
|
4455 | } |
|
|
4456 | } |
|
|
4457 | |
|
|
4458 | if (sigfd >= 0) |
|
|
4459 | { |
|
|
4460 | /* TODO: check .head */ |
|
|
4461 | sigaddset (&sigfd_set, w->signum); |
|
|
4462 | sigprocmask (SIG_BLOCK, &sigfd_set, 0); |
|
|
4463 | |
|
|
4464 | signalfd (sigfd, &sigfd_set, 0); |
|
|
4465 | } |
|
|
4466 | #endif |
|
|
4467 | |
|
|
4468 | ev_start (EV_A_ (W)w, 1); |
|
|
4469 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
|
|
4470 | |
|
|
4471 | if (!((WL)w)->next) |
|
|
4472 | # if EV_USE_SIGNALFD |
|
|
4473 | if (sigfd < 0) /*TODO*/ |
1505 | #endif |
4474 | # endif |
1506 | if (ev_is_active (w)) |
4475 | { |
|
|
4476 | # ifdef _WIN32 |
|
|
4477 | evpipe_init (EV_A); |
|
|
4478 | |
|
|
4479 | signal (w->signum, ev_sighandler); |
|
|
4480 | # else |
|
|
4481 | struct sigaction sa; |
|
|
4482 | |
|
|
4483 | evpipe_init (EV_A); |
|
|
4484 | |
|
|
4485 | sa.sa_handler = ev_sighandler; |
|
|
4486 | sigfillset (&sa.sa_mask); |
|
|
4487 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
4488 | sigaction (w->signum, &sa, 0); |
|
|
4489 | |
|
|
4490 | if (origflags & EVFLAG_NOSIGMASK) |
|
|
4491 | { |
|
|
4492 | sigemptyset (&sa.sa_mask); |
|
|
4493 | sigaddset (&sa.sa_mask, w->signum); |
|
|
4494 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
|
|
4495 | } |
|
|
4496 | #endif |
|
|
4497 | } |
|
|
4498 | |
|
|
4499 | EV_FREQUENT_CHECK; |
|
|
4500 | } |
|
|
4501 | |
|
|
4502 | ecb_noinline |
|
|
4503 | void |
|
|
4504 | ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT |
|
|
4505 | { |
|
|
4506 | clear_pending (EV_A_ (W)w); |
|
|
4507 | if (ecb_expect_false (!ev_is_active (w))) |
1507 | return; |
4508 | return; |
1508 | |
4509 | |
1509 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
4510 | EV_FREQUENT_CHECK; |
|
|
4511 | |
|
|
4512 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
|
|
4513 | ev_stop (EV_A_ (W)w); |
|
|
4514 | |
|
|
4515 | if (!signals [w->signum - 1].head) |
|
|
4516 | { |
|
|
4517 | #if EV_MULTIPLICITY |
|
|
4518 | signals [w->signum - 1].loop = 0; /* unattach from signal */ |
|
|
4519 | #endif |
|
|
4520 | #if EV_USE_SIGNALFD |
|
|
4521 | if (sigfd >= 0) |
|
|
4522 | { |
|
|
4523 | sigset_t ss; |
|
|
4524 | |
|
|
4525 | sigemptyset (&ss); |
|
|
4526 | sigaddset (&ss, w->signum); |
|
|
4527 | sigdelset (&sigfd_set, w->signum); |
|
|
4528 | |
|
|
4529 | signalfd (sigfd, &sigfd_set, 0); |
|
|
4530 | sigprocmask (SIG_UNBLOCK, &ss, 0); |
|
|
4531 | } |
|
|
4532 | else |
|
|
4533 | #endif |
|
|
4534 | signal (w->signum, SIG_DFL); |
|
|
4535 | } |
|
|
4536 | |
|
|
4537 | EV_FREQUENT_CHECK; |
|
|
4538 | } |
|
|
4539 | |
|
|
4540 | #endif |
|
|
4541 | |
|
|
4542 | #if EV_CHILD_ENABLE |
|
|
4543 | |
|
|
4544 | void |
|
|
4545 | ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT |
|
|
4546 | { |
|
|
4547 | #if EV_MULTIPLICITY |
|
|
4548 | assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
4549 | #endif |
|
|
4550 | if (ecb_expect_false (ev_is_active (w))) |
|
|
4551 | return; |
|
|
4552 | |
|
|
4553 | EV_FREQUENT_CHECK; |
1510 | |
4554 | |
1511 | ev_start (EV_A_ (W)w, 1); |
4555 | ev_start (EV_A_ (W)w, 1); |
1512 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
4556 | wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); |
1513 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
1514 | |
4557 | |
1515 | if (!((WL)w)->next) |
4558 | EV_FREQUENT_CHECK; |
|
|
4559 | } |
|
|
4560 | |
|
|
4561 | void |
|
|
4562 | ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT |
|
|
4563 | { |
|
|
4564 | clear_pending (EV_A_ (W)w); |
|
|
4565 | if (ecb_expect_false (!ev_is_active (w))) |
|
|
4566 | return; |
|
|
4567 | |
|
|
4568 | EV_FREQUENT_CHECK; |
|
|
4569 | |
|
|
4570 | wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); |
|
|
4571 | ev_stop (EV_A_ (W)w); |
|
|
4572 | |
|
|
4573 | EV_FREQUENT_CHECK; |
|
|
4574 | } |
|
|
4575 | |
|
|
4576 | #endif |
|
|
4577 | |
|
|
4578 | #if EV_STAT_ENABLE |
|
|
4579 | |
|
|
4580 | # ifdef _WIN32 |
|
|
4581 | # undef lstat |
|
|
4582 | # define lstat(a,b) _stati64 (a,b) |
|
|
4583 | # endif |
|
|
4584 | |
|
|
4585 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
4586 | #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
|
|
4587 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
4588 | |
|
|
4589 | ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
4590 | |
|
|
4591 | #if EV_USE_INOTIFY |
|
|
4592 | |
|
|
4593 | /* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ |
|
|
4594 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
|
|
4595 | |
|
|
4596 | ecb_noinline |
|
|
4597 | static void |
|
|
4598 | infy_add (EV_P_ ev_stat *w) |
|
|
4599 | { |
|
|
4600 | w->wd = inotify_add_watch (fs_fd, w->path, |
|
|
4601 | IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY |
|
|
4602 | | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO |
|
|
4603 | | IN_DONT_FOLLOW | IN_MASK_ADD); |
|
|
4604 | |
|
|
4605 | if (w->wd >= 0) |
|
|
4606 | { |
|
|
4607 | struct statfs sfs; |
|
|
4608 | |
|
|
4609 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
4610 | /* unless the filesystem is known to be local, we therefore still poll */ |
|
|
4611 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
4612 | |
|
|
4613 | if (!fs_2625) |
|
|
4614 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
4615 | else if (!statfs (w->path, &sfs) |
|
|
4616 | && (sfs.f_type == 0x1373 /* devfs */ |
|
|
4617 | || sfs.f_type == 0x4006 /* fat */ |
|
|
4618 | || sfs.f_type == 0x4d44 /* msdos */ |
|
|
4619 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
4620 | || sfs.f_type == 0x72b6 /* jffs2 */ |
|
|
4621 | || sfs.f_type == 0x858458f6 /* ramfs */ |
|
|
4622 | || sfs.f_type == 0x5346544e /* ntfs */ |
|
|
4623 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
4624 | || sfs.f_type == 0x9123683e /* btrfs */ |
|
|
4625 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
4626 | || sfs.f_type == 0x01021994 /* tmpfs */ |
|
|
4627 | || sfs.f_type == 0x58465342 /* xfs */)) |
|
|
4628 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
|
|
4629 | else |
|
|
4630 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
1516 | { |
4631 | } |
1517 | #if WIN32 |
4632 | else |
1518 | signal (w->signum, sighandler); |
4633 | { |
|
|
4634 | /* can't use inotify, continue to stat */ |
|
|
4635 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
4636 | |
|
|
4637 | /* if path is not there, monitor some parent directory for speedup hints */ |
|
|
4638 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
|
|
4639 | /* but an efficiency issue only */ |
|
|
4640 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
|
|
4641 | { |
|
|
4642 | char path [4096]; |
|
|
4643 | strcpy (path, w->path); |
|
|
4644 | |
|
|
4645 | do |
|
|
4646 | { |
|
|
4647 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
|
|
4648 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
|
|
4649 | |
|
|
4650 | char *pend = strrchr (path, '/'); |
|
|
4651 | |
|
|
4652 | if (!pend || pend == path) |
|
|
4653 | break; |
|
|
4654 | |
|
|
4655 | *pend = 0; |
|
|
4656 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
4657 | } |
|
|
4658 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
4659 | } |
|
|
4660 | } |
|
|
4661 | |
|
|
4662 | if (w->wd >= 0) |
|
|
4663 | wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); |
|
|
4664 | |
|
|
4665 | /* now re-arm timer, if required */ |
|
|
4666 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
|
|
4667 | ev_timer_again (EV_A_ &w->timer); |
|
|
4668 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
4669 | } |
|
|
4670 | |
|
|
4671 | ecb_noinline |
|
|
4672 | static void |
|
|
4673 | infy_del (EV_P_ ev_stat *w) |
|
|
4674 | { |
|
|
4675 | int slot; |
|
|
4676 | int wd = w->wd; |
|
|
4677 | |
|
|
4678 | if (wd < 0) |
|
|
4679 | return; |
|
|
4680 | |
|
|
4681 | w->wd = -2; |
|
|
4682 | slot = wd & ((EV_INOTIFY_HASHSIZE) - 1); |
|
|
4683 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
4684 | |
|
|
4685 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
4686 | inotify_rm_watch (fs_fd, wd); |
|
|
4687 | } |
|
|
4688 | |
|
|
4689 | ecb_noinline |
|
|
4690 | static void |
|
|
4691 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
4692 | { |
|
|
4693 | if (slot < 0) |
|
|
4694 | /* overflow, need to check for all hash slots */ |
|
|
4695 | for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
|
|
4696 | infy_wd (EV_A_ slot, wd, ev); |
|
|
4697 | else |
|
|
4698 | { |
|
|
4699 | WL w_; |
|
|
4700 | |
|
|
4701 | for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; ) |
|
|
4702 | { |
|
|
4703 | ev_stat *w = (ev_stat *)w_; |
|
|
4704 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
4705 | |
|
|
4706 | if (w->wd == wd || wd == -1) |
|
|
4707 | { |
|
|
4708 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
4709 | { |
|
|
4710 | wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); |
|
|
4711 | w->wd = -1; |
|
|
4712 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
4713 | } |
|
|
4714 | |
|
|
4715 | stat_timer_cb (EV_A_ &w->timer, 0); |
|
|
4716 | } |
|
|
4717 | } |
|
|
4718 | } |
|
|
4719 | } |
|
|
4720 | |
|
|
4721 | static void |
|
|
4722 | infy_cb (EV_P_ ev_io *w, int revents) |
|
|
4723 | { |
|
|
4724 | char buf [EV_INOTIFY_BUFSIZE]; |
|
|
4725 | int ofs; |
|
|
4726 | int len = read (fs_fd, buf, sizeof (buf)); |
|
|
4727 | |
|
|
4728 | for (ofs = 0; ofs < len; ) |
|
|
4729 | { |
|
|
4730 | struct inotify_event *ev = (struct inotify_event *)(buf + ofs); |
|
|
4731 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
4732 | ofs += sizeof (struct inotify_event) + ev->len; |
|
|
4733 | } |
|
|
4734 | } |
|
|
4735 | |
|
|
4736 | inline_size ecb_cold |
|
|
4737 | void |
|
|
4738 | ev_check_2625 (EV_P) |
|
|
4739 | { |
|
|
4740 | /* kernels < 2.6.25 are borked |
|
|
4741 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
|
|
4742 | */ |
|
|
4743 | if (ev_linux_version () < 0x020619) |
|
|
4744 | return; |
|
|
4745 | |
|
|
4746 | fs_2625 = 1; |
|
|
4747 | } |
|
|
4748 | |
|
|
4749 | inline_size int |
|
|
4750 | infy_newfd (void) |
|
|
4751 | { |
|
|
4752 | #if defined IN_CLOEXEC && defined IN_NONBLOCK |
|
|
4753 | int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); |
|
|
4754 | if (fd >= 0) |
|
|
4755 | return fd; |
|
|
4756 | #endif |
|
|
4757 | return inotify_init (); |
|
|
4758 | } |
|
|
4759 | |
|
|
4760 | inline_size void |
|
|
4761 | infy_init (EV_P) |
|
|
4762 | { |
|
|
4763 | if (fs_fd != -2) |
|
|
4764 | return; |
|
|
4765 | |
|
|
4766 | fs_fd = -1; |
|
|
4767 | |
|
|
4768 | ev_check_2625 (EV_A); |
|
|
4769 | |
|
|
4770 | fs_fd = infy_newfd (); |
|
|
4771 | |
|
|
4772 | if (fs_fd >= 0) |
|
|
4773 | { |
|
|
4774 | fd_intern (fs_fd); |
|
|
4775 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
4776 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
4777 | ev_io_start (EV_A_ &fs_w); |
|
|
4778 | ev_unref (EV_A); |
|
|
4779 | } |
|
|
4780 | } |
|
|
4781 | |
|
|
4782 | inline_size void |
|
|
4783 | infy_fork (EV_P) |
|
|
4784 | { |
|
|
4785 | int slot; |
|
|
4786 | |
|
|
4787 | if (fs_fd < 0) |
|
|
4788 | return; |
|
|
4789 | |
|
|
4790 | ev_ref (EV_A); |
|
|
4791 | ev_io_stop (EV_A_ &fs_w); |
|
|
4792 | close (fs_fd); |
|
|
4793 | fs_fd = infy_newfd (); |
|
|
4794 | |
|
|
4795 | if (fs_fd >= 0) |
|
|
4796 | { |
|
|
4797 | fd_intern (fs_fd); |
|
|
4798 | ev_io_set (&fs_w, fs_fd, EV_READ); |
|
|
4799 | ev_io_start (EV_A_ &fs_w); |
|
|
4800 | ev_unref (EV_A); |
|
|
4801 | } |
|
|
4802 | |
|
|
4803 | for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
|
|
4804 | { |
|
|
4805 | WL w_ = fs_hash [slot].head; |
|
|
4806 | fs_hash [slot].head = 0; |
|
|
4807 | |
|
|
4808 | while (w_) |
|
|
4809 | { |
|
|
4810 | ev_stat *w = (ev_stat *)w_; |
|
|
4811 | w_ = w_->next; /* lets us add this watcher */ |
|
|
4812 | |
|
|
4813 | w->wd = -1; |
|
|
4814 | |
|
|
4815 | if (fs_fd >= 0) |
|
|
4816 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
4817 | else |
|
|
4818 | { |
|
|
4819 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
4820 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
|
|
4821 | ev_timer_again (EV_A_ &w->timer); |
|
|
4822 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
4823 | } |
|
|
4824 | } |
|
|
4825 | } |
|
|
4826 | } |
|
|
4827 | |
|
|
4828 | #endif |
|
|
4829 | |
|
|
4830 | #ifdef _WIN32 |
|
|
4831 | # define EV_LSTAT(p,b) _stati64 (p, b) |
1519 | #else |
4832 | #else |
1520 | struct sigaction sa; |
4833 | # define EV_LSTAT(p,b) lstat (p, b) |
1521 | sa.sa_handler = sighandler; |
|
|
1522 | sigfillset (&sa.sa_mask); |
|
|
1523 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
1524 | sigaction (w->signum, &sa, 0); |
|
|
1525 | #endif |
4834 | #endif |
1526 | } |
|
|
1527 | } |
|
|
1528 | |
4835 | |
1529 | void |
4836 | void |
1530 | ev_signal_stop (EV_P_ struct ev_signal *w) |
4837 | ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT |
1531 | { |
4838 | { |
1532 | ev_clear_pending (EV_A_ (W)w); |
4839 | if (lstat (w->path, &w->attr) < 0) |
1533 | if (!ev_is_active (w)) |
4840 | w->attr.st_nlink = 0; |
|
|
4841 | else if (!w->attr.st_nlink) |
|
|
4842 | w->attr.st_nlink = 1; |
|
|
4843 | } |
|
|
4844 | |
|
|
4845 | ecb_noinline |
|
|
4846 | static void |
|
|
4847 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
4848 | { |
|
|
4849 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
4850 | |
|
|
4851 | ev_statdata prev = w->attr; |
|
|
4852 | ev_stat_stat (EV_A_ w); |
|
|
4853 | |
|
|
4854 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
4855 | if ( |
|
|
4856 | prev.st_dev != w->attr.st_dev |
|
|
4857 | || prev.st_ino != w->attr.st_ino |
|
|
4858 | || prev.st_mode != w->attr.st_mode |
|
|
4859 | || prev.st_nlink != w->attr.st_nlink |
|
|
4860 | || prev.st_uid != w->attr.st_uid |
|
|
4861 | || prev.st_gid != w->attr.st_gid |
|
|
4862 | || prev.st_rdev != w->attr.st_rdev |
|
|
4863 | || prev.st_size != w->attr.st_size |
|
|
4864 | || prev.st_atime != w->attr.st_atime |
|
|
4865 | || prev.st_mtime != w->attr.st_mtime |
|
|
4866 | || prev.st_ctime != w->attr.st_ctime |
|
|
4867 | ) { |
|
|
4868 | /* we only update w->prev on actual differences */ |
|
|
4869 | /* in case we test more often than invoke the callback, */ |
|
|
4870 | /* to ensure that prev is always different to attr */ |
|
|
4871 | w->prev = prev; |
|
|
4872 | |
|
|
4873 | #if EV_USE_INOTIFY |
|
|
4874 | if (fs_fd >= 0) |
|
|
4875 | { |
|
|
4876 | infy_del (EV_A_ w); |
|
|
4877 | infy_add (EV_A_ w); |
|
|
4878 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
4879 | } |
|
|
4880 | #endif |
|
|
4881 | |
|
|
4882 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
4883 | } |
|
|
4884 | } |
|
|
4885 | |
|
|
4886 | void |
|
|
4887 | ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT |
|
|
4888 | { |
|
|
4889 | if (ecb_expect_false (ev_is_active (w))) |
1534 | return; |
4890 | return; |
1535 | |
4891 | |
1536 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
4892 | ev_stat_stat (EV_A_ w); |
|
|
4893 | |
|
|
4894 | if (w->interval < MIN_STAT_INTERVAL && w->interval) |
|
|
4895 | w->interval = MIN_STAT_INTERVAL; |
|
|
4896 | |
|
|
4897 | ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL); |
|
|
4898 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
4899 | |
|
|
4900 | #if EV_USE_INOTIFY |
|
|
4901 | infy_init (EV_A); |
|
|
4902 | |
|
|
4903 | if (fs_fd >= 0) |
|
|
4904 | infy_add (EV_A_ w); |
|
|
4905 | else |
|
|
4906 | #endif |
|
|
4907 | { |
|
|
4908 | ev_timer_again (EV_A_ &w->timer); |
|
|
4909 | ev_unref (EV_A); |
|
|
4910 | } |
|
|
4911 | |
|
|
4912 | ev_start (EV_A_ (W)w, 1); |
|
|
4913 | |
|
|
4914 | EV_FREQUENT_CHECK; |
|
|
4915 | } |
|
|
4916 | |
|
|
4917 | void |
|
|
4918 | ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT |
|
|
4919 | { |
|
|
4920 | clear_pending (EV_A_ (W)w); |
|
|
4921 | if (ecb_expect_false (!ev_is_active (w))) |
|
|
4922 | return; |
|
|
4923 | |
|
|
4924 | EV_FREQUENT_CHECK; |
|
|
4925 | |
|
|
4926 | #if EV_USE_INOTIFY |
|
|
4927 | infy_del (EV_A_ w); |
|
|
4928 | #endif |
|
|
4929 | |
|
|
4930 | if (ev_is_active (&w->timer)) |
|
|
4931 | { |
|
|
4932 | ev_ref (EV_A); |
|
|
4933 | ev_timer_stop (EV_A_ &w->timer); |
|
|
4934 | } |
|
|
4935 | |
1537 | ev_stop (EV_A_ (W)w); |
4936 | ev_stop (EV_A_ (W)w); |
1538 | |
4937 | |
1539 | if (!signals [w->signum - 1].head) |
4938 | EV_FREQUENT_CHECK; |
1540 | signal (w->signum, SIG_DFL); |
|
|
1541 | } |
4939 | } |
1542 | |
|
|
1543 | void |
|
|
1544 | ev_child_start (EV_P_ struct ev_child *w) |
|
|
1545 | { |
|
|
1546 | #if EV_MULTIPLICITY |
|
|
1547 | assert (("child watchers are only supported in the default loop", loop == default_loop)); |
|
|
1548 | #endif |
4940 | #endif |
1549 | if (ev_is_active (w)) |
4941 | |
|
|
4942 | #if EV_IDLE_ENABLE |
|
|
4943 | void |
|
|
4944 | ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT |
|
|
4945 | { |
|
|
4946 | if (ecb_expect_false (ev_is_active (w))) |
1550 | return; |
4947 | return; |
1551 | |
4948 | |
|
|
4949 | pri_adjust (EV_A_ (W)w); |
|
|
4950 | |
|
|
4951 | EV_FREQUENT_CHECK; |
|
|
4952 | |
|
|
4953 | { |
|
|
4954 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
4955 | |
|
|
4956 | ++idleall; |
|
|
4957 | ev_start (EV_A_ (W)w, active); |
|
|
4958 | |
|
|
4959 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit); |
|
|
4960 | idles [ABSPRI (w)][active - 1] = w; |
|
|
4961 | } |
|
|
4962 | |
|
|
4963 | EV_FREQUENT_CHECK; |
|
|
4964 | } |
|
|
4965 | |
|
|
4966 | void |
|
|
4967 | ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT |
|
|
4968 | { |
|
|
4969 | clear_pending (EV_A_ (W)w); |
|
|
4970 | if (ecb_expect_false (!ev_is_active (w))) |
|
|
4971 | return; |
|
|
4972 | |
|
|
4973 | EV_FREQUENT_CHECK; |
|
|
4974 | |
|
|
4975 | { |
|
|
4976 | int active = ev_active (w); |
|
|
4977 | |
|
|
4978 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
4979 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
|
|
4980 | |
|
|
4981 | ev_stop (EV_A_ (W)w); |
|
|
4982 | --idleall; |
|
|
4983 | } |
|
|
4984 | |
|
|
4985 | EV_FREQUENT_CHECK; |
|
|
4986 | } |
|
|
4987 | #endif |
|
|
4988 | |
|
|
4989 | #if EV_PREPARE_ENABLE |
|
|
4990 | void |
|
|
4991 | ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT |
|
|
4992 | { |
|
|
4993 | if (ecb_expect_false (ev_is_active (w))) |
|
|
4994 | return; |
|
|
4995 | |
|
|
4996 | EV_FREQUENT_CHECK; |
|
|
4997 | |
|
|
4998 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
4999 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit); |
|
|
5000 | prepares [preparecnt - 1] = w; |
|
|
5001 | |
|
|
5002 | EV_FREQUENT_CHECK; |
|
|
5003 | } |
|
|
5004 | |
|
|
5005 | void |
|
|
5006 | ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT |
|
|
5007 | { |
|
|
5008 | clear_pending (EV_A_ (W)w); |
|
|
5009 | if (ecb_expect_false (!ev_is_active (w))) |
|
|
5010 | return; |
|
|
5011 | |
|
|
5012 | EV_FREQUENT_CHECK; |
|
|
5013 | |
|
|
5014 | { |
|
|
5015 | int active = ev_active (w); |
|
|
5016 | |
|
|
5017 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
5018 | ev_active (prepares [active - 1]) = active; |
|
|
5019 | } |
|
|
5020 | |
|
|
5021 | ev_stop (EV_A_ (W)w); |
|
|
5022 | |
|
|
5023 | EV_FREQUENT_CHECK; |
|
|
5024 | } |
|
|
5025 | #endif |
|
|
5026 | |
|
|
5027 | #if EV_CHECK_ENABLE |
|
|
5028 | void |
|
|
5029 | ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT |
|
|
5030 | { |
|
|
5031 | if (ecb_expect_false (ev_is_active (w))) |
|
|
5032 | return; |
|
|
5033 | |
|
|
5034 | EV_FREQUENT_CHECK; |
|
|
5035 | |
|
|
5036 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
5037 | array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit); |
|
|
5038 | checks [checkcnt - 1] = w; |
|
|
5039 | |
|
|
5040 | EV_FREQUENT_CHECK; |
|
|
5041 | } |
|
|
5042 | |
|
|
5043 | void |
|
|
5044 | ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT |
|
|
5045 | { |
|
|
5046 | clear_pending (EV_A_ (W)w); |
|
|
5047 | if (ecb_expect_false (!ev_is_active (w))) |
|
|
5048 | return; |
|
|
5049 | |
|
|
5050 | EV_FREQUENT_CHECK; |
|
|
5051 | |
|
|
5052 | { |
|
|
5053 | int active = ev_active (w); |
|
|
5054 | |
|
|
5055 | checks [active - 1] = checks [--checkcnt]; |
|
|
5056 | ev_active (checks [active - 1]) = active; |
|
|
5057 | } |
|
|
5058 | |
|
|
5059 | ev_stop (EV_A_ (W)w); |
|
|
5060 | |
|
|
5061 | EV_FREQUENT_CHECK; |
|
|
5062 | } |
|
|
5063 | #endif |
|
|
5064 | |
|
|
5065 | #if EV_EMBED_ENABLE |
|
|
5066 | ecb_noinline |
|
|
5067 | void |
|
|
5068 | ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT |
|
|
5069 | { |
|
|
5070 | ev_run (w->other, EVRUN_NOWAIT); |
|
|
5071 | } |
|
|
5072 | |
|
|
5073 | static void |
|
|
5074 | embed_io_cb (EV_P_ ev_io *io, int revents) |
|
|
5075 | { |
|
|
5076 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
|
|
5077 | |
|
|
5078 | if (ev_cb (w)) |
|
|
5079 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
5080 | else |
|
|
5081 | ev_run (w->other, EVRUN_NOWAIT); |
|
|
5082 | } |
|
|
5083 | |
|
|
5084 | static void |
|
|
5085 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
5086 | { |
|
|
5087 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
5088 | |
|
|
5089 | { |
|
|
5090 | EV_P = w->other; |
|
|
5091 | |
|
|
5092 | while (fdchangecnt) |
|
|
5093 | { |
|
|
5094 | fd_reify (EV_A); |
|
|
5095 | ev_run (EV_A_ EVRUN_NOWAIT); |
|
|
5096 | } |
|
|
5097 | } |
|
|
5098 | } |
|
|
5099 | |
|
|
5100 | #if EV_FORK_ENABLE |
|
|
5101 | static void |
|
|
5102 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
|
|
5103 | { |
|
|
5104 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
|
|
5105 | |
|
|
5106 | ev_embed_stop (EV_A_ w); |
|
|
5107 | |
|
|
5108 | { |
|
|
5109 | EV_P = w->other; |
|
|
5110 | |
|
|
5111 | ev_loop_fork (EV_A); |
|
|
5112 | ev_run (EV_A_ EVRUN_NOWAIT); |
|
|
5113 | } |
|
|
5114 | |
|
|
5115 | ev_embed_start (EV_A_ w); |
|
|
5116 | } |
|
|
5117 | #endif |
|
|
5118 | |
|
|
5119 | #if 0 |
|
|
5120 | static void |
|
|
5121 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
5122 | { |
|
|
5123 | ev_idle_stop (EV_A_ idle); |
|
|
5124 | } |
|
|
5125 | #endif |
|
|
5126 | |
|
|
5127 | void |
|
|
5128 | ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT |
|
|
5129 | { |
|
|
5130 | if (ecb_expect_false (ev_is_active (w))) |
|
|
5131 | return; |
|
|
5132 | |
|
|
5133 | { |
|
|
5134 | EV_P = w->other; |
|
|
5135 | assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
5136 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
|
|
5137 | } |
|
|
5138 | |
|
|
5139 | EV_FREQUENT_CHECK; |
|
|
5140 | |
|
|
5141 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
5142 | ev_io_start (EV_A_ &w->io); |
|
|
5143 | |
|
|
5144 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
5145 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
5146 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
5147 | |
|
|
5148 | #if EV_FORK_ENABLE |
|
|
5149 | ev_fork_init (&w->fork, embed_fork_cb); |
|
|
5150 | ev_fork_start (EV_A_ &w->fork); |
|
|
5151 | #endif |
|
|
5152 | |
|
|
5153 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
5154 | |
1552 | ev_start (EV_A_ (W)w, 1); |
5155 | ev_start (EV_A_ (W)w, 1); |
1553 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1554 | } |
|
|
1555 | |
5156 | |
|
|
5157 | EV_FREQUENT_CHECK; |
|
|
5158 | } |
|
|
5159 | |
1556 | void |
5160 | void |
1557 | ev_child_stop (EV_P_ struct ev_child *w) |
5161 | ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT |
1558 | { |
5162 | { |
1559 | ev_clear_pending (EV_A_ (W)w); |
5163 | clear_pending (EV_A_ (W)w); |
1560 | if (!ev_is_active (w)) |
5164 | if (ecb_expect_false (!ev_is_active (w))) |
1561 | return; |
5165 | return; |
1562 | |
5166 | |
1563 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
5167 | EV_FREQUENT_CHECK; |
|
|
5168 | |
|
|
5169 | ev_io_stop (EV_A_ &w->io); |
|
|
5170 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
5171 | #if EV_FORK_ENABLE |
|
|
5172 | ev_fork_stop (EV_A_ &w->fork); |
|
|
5173 | #endif |
|
|
5174 | |
1564 | ev_stop (EV_A_ (W)w); |
5175 | ev_stop (EV_A_ (W)w); |
|
|
5176 | |
|
|
5177 | EV_FREQUENT_CHECK; |
1565 | } |
5178 | } |
|
|
5179 | #endif |
|
|
5180 | |
|
|
5181 | #if EV_FORK_ENABLE |
|
|
5182 | void |
|
|
5183 | ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT |
|
|
5184 | { |
|
|
5185 | if (ecb_expect_false (ev_is_active (w))) |
|
|
5186 | return; |
|
|
5187 | |
|
|
5188 | EV_FREQUENT_CHECK; |
|
|
5189 | |
|
|
5190 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
5191 | array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit); |
|
|
5192 | forks [forkcnt - 1] = w; |
|
|
5193 | |
|
|
5194 | EV_FREQUENT_CHECK; |
|
|
5195 | } |
|
|
5196 | |
|
|
5197 | void |
|
|
5198 | ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT |
|
|
5199 | { |
|
|
5200 | clear_pending (EV_A_ (W)w); |
|
|
5201 | if (ecb_expect_false (!ev_is_active (w))) |
|
|
5202 | return; |
|
|
5203 | |
|
|
5204 | EV_FREQUENT_CHECK; |
|
|
5205 | |
|
|
5206 | { |
|
|
5207 | int active = ev_active (w); |
|
|
5208 | |
|
|
5209 | forks [active - 1] = forks [--forkcnt]; |
|
|
5210 | ev_active (forks [active - 1]) = active; |
|
|
5211 | } |
|
|
5212 | |
|
|
5213 | ev_stop (EV_A_ (W)w); |
|
|
5214 | |
|
|
5215 | EV_FREQUENT_CHECK; |
|
|
5216 | } |
|
|
5217 | #endif |
|
|
5218 | |
|
|
5219 | #if EV_CLEANUP_ENABLE |
|
|
5220 | void |
|
|
5221 | ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT |
|
|
5222 | { |
|
|
5223 | if (ecb_expect_false (ev_is_active (w))) |
|
|
5224 | return; |
|
|
5225 | |
|
|
5226 | EV_FREQUENT_CHECK; |
|
|
5227 | |
|
|
5228 | ev_start (EV_A_ (W)w, ++cleanupcnt); |
|
|
5229 | array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit); |
|
|
5230 | cleanups [cleanupcnt - 1] = w; |
|
|
5231 | |
|
|
5232 | /* cleanup watchers should never keep a refcount on the loop */ |
|
|
5233 | ev_unref (EV_A); |
|
|
5234 | EV_FREQUENT_CHECK; |
|
|
5235 | } |
|
|
5236 | |
|
|
5237 | void |
|
|
5238 | ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT |
|
|
5239 | { |
|
|
5240 | clear_pending (EV_A_ (W)w); |
|
|
5241 | if (ecb_expect_false (!ev_is_active (w))) |
|
|
5242 | return; |
|
|
5243 | |
|
|
5244 | EV_FREQUENT_CHECK; |
|
|
5245 | ev_ref (EV_A); |
|
|
5246 | |
|
|
5247 | { |
|
|
5248 | int active = ev_active (w); |
|
|
5249 | |
|
|
5250 | cleanups [active - 1] = cleanups [--cleanupcnt]; |
|
|
5251 | ev_active (cleanups [active - 1]) = active; |
|
|
5252 | } |
|
|
5253 | |
|
|
5254 | ev_stop (EV_A_ (W)w); |
|
|
5255 | |
|
|
5256 | EV_FREQUENT_CHECK; |
|
|
5257 | } |
|
|
5258 | #endif |
|
|
5259 | |
|
|
5260 | #if EV_ASYNC_ENABLE |
|
|
5261 | void |
|
|
5262 | ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT |
|
|
5263 | { |
|
|
5264 | if (ecb_expect_false (ev_is_active (w))) |
|
|
5265 | return; |
|
|
5266 | |
|
|
5267 | w->sent = 0; |
|
|
5268 | |
|
|
5269 | evpipe_init (EV_A); |
|
|
5270 | |
|
|
5271 | EV_FREQUENT_CHECK; |
|
|
5272 | |
|
|
5273 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
5274 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit); |
|
|
5275 | asyncs [asynccnt - 1] = w; |
|
|
5276 | |
|
|
5277 | EV_FREQUENT_CHECK; |
|
|
5278 | } |
|
|
5279 | |
|
|
5280 | void |
|
|
5281 | ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT |
|
|
5282 | { |
|
|
5283 | clear_pending (EV_A_ (W)w); |
|
|
5284 | if (ecb_expect_false (!ev_is_active (w))) |
|
|
5285 | return; |
|
|
5286 | |
|
|
5287 | EV_FREQUENT_CHECK; |
|
|
5288 | |
|
|
5289 | { |
|
|
5290 | int active = ev_active (w); |
|
|
5291 | |
|
|
5292 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
5293 | ev_active (asyncs [active - 1]) = active; |
|
|
5294 | } |
|
|
5295 | |
|
|
5296 | ev_stop (EV_A_ (W)w); |
|
|
5297 | |
|
|
5298 | EV_FREQUENT_CHECK; |
|
|
5299 | } |
|
|
5300 | |
|
|
5301 | void |
|
|
5302 | ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT |
|
|
5303 | { |
|
|
5304 | w->sent = 1; |
|
|
5305 | evpipe_write (EV_A_ &async_pending); |
|
|
5306 | } |
|
|
5307 | #endif |
1566 | |
5308 | |
1567 | /*****************************************************************************/ |
5309 | /*****************************************************************************/ |
1568 | |
5310 | |
1569 | struct ev_once |
5311 | struct ev_once |
1570 | { |
5312 | { |
1571 | struct ev_io io; |
5313 | ev_io io; |
1572 | struct ev_timer to; |
5314 | ev_timer to; |
1573 | void (*cb)(int revents, void *arg); |
5315 | void (*cb)(int revents, void *arg); |
1574 | void *arg; |
5316 | void *arg; |
1575 | }; |
5317 | }; |
1576 | |
5318 | |
1577 | static void |
5319 | static void |
1578 | once_cb (EV_P_ struct ev_once *once, int revents) |
5320 | once_cb (EV_P_ struct ev_once *once, int revents) |
1579 | { |
5321 | { |
1580 | void (*cb)(int revents, void *arg) = once->cb; |
5322 | void (*cb)(int revents, void *arg) = once->cb; |
1581 | void *arg = once->arg; |
5323 | void *arg = once->arg; |
1582 | |
5324 | |
1583 | ev_io_stop (EV_A_ &once->io); |
5325 | ev_io_stop (EV_A_ &once->io); |
1584 | ev_timer_stop (EV_A_ &once->to); |
5326 | ev_timer_stop (EV_A_ &once->to); |
1585 | ev_free (once); |
5327 | ev_free (once); |
1586 | |
5328 | |
1587 | cb (revents, arg); |
5329 | cb (revents, arg); |
1588 | } |
5330 | } |
1589 | |
5331 | |
1590 | static void |
5332 | static void |
1591 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
5333 | once_cb_io (EV_P_ ev_io *w, int revents) |
1592 | { |
5334 | { |
1593 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
5335 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)); |
|
|
5336 | |
|
|
5337 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to)); |
1594 | } |
5338 | } |
1595 | |
5339 | |
1596 | static void |
5340 | static void |
1597 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
5341 | once_cb_to (EV_P_ ev_timer *w, int revents) |
1598 | { |
5342 | { |
1599 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
5343 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)); |
1600 | } |
|
|
1601 | |
5344 | |
|
|
5345 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); |
|
|
5346 | } |
|
|
5347 | |
1602 | void |
5348 | void |
1603 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
5349 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT |
1604 | { |
5350 | { |
1605 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
5351 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
1606 | |
5352 | |
1607 | if (!once) |
|
|
1608 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
|
|
1609 | else |
|
|
1610 | { |
|
|
1611 | once->cb = cb; |
5353 | once->cb = cb; |
1612 | once->arg = arg; |
5354 | once->arg = arg; |
1613 | |
5355 | |
1614 | ev_init (&once->io, once_cb_io); |
5356 | ev_init (&once->io, once_cb_io); |
1615 | if (fd >= 0) |
5357 | if (fd >= 0) |
|
|
5358 | { |
|
|
5359 | ev_io_set (&once->io, fd, events); |
|
|
5360 | ev_io_start (EV_A_ &once->io); |
|
|
5361 | } |
|
|
5362 | |
|
|
5363 | ev_init (&once->to, once_cb_to); |
|
|
5364 | if (timeout >= 0.) |
|
|
5365 | { |
|
|
5366 | ev_timer_set (&once->to, timeout, 0.); |
|
|
5367 | ev_timer_start (EV_A_ &once->to); |
|
|
5368 | } |
|
|
5369 | } |
|
|
5370 | |
|
|
5371 | /*****************************************************************************/ |
|
|
5372 | |
|
|
5373 | #if EV_WALK_ENABLE |
|
|
5374 | ecb_cold |
|
|
5375 | void |
|
|
5376 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT |
|
|
5377 | { |
|
|
5378 | int i, j; |
|
|
5379 | ev_watcher_list *wl, *wn; |
|
|
5380 | |
|
|
5381 | if (types & (EV_IO | EV_EMBED)) |
|
|
5382 | for (i = 0; i < anfdmax; ++i) |
|
|
5383 | for (wl = anfds [i].head; wl; ) |
1616 | { |
5384 | { |
1617 | ev_io_set (&once->io, fd, events); |
5385 | wn = wl->next; |
1618 | ev_io_start (EV_A_ &once->io); |
5386 | |
|
|
5387 | #if EV_EMBED_ENABLE |
|
|
5388 | if (ev_cb ((ev_io *)wl) == embed_io_cb) |
|
|
5389 | { |
|
|
5390 | if (types & EV_EMBED) |
|
|
5391 | cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io)); |
|
|
5392 | } |
|
|
5393 | else |
|
|
5394 | #endif |
|
|
5395 | #if EV_USE_INOTIFY |
|
|
5396 | if (ev_cb ((ev_io *)wl) == infy_cb) |
|
|
5397 | ; |
|
|
5398 | else |
|
|
5399 | #endif |
|
|
5400 | if ((ev_io *)wl != &pipe_w) |
|
|
5401 | if (types & EV_IO) |
|
|
5402 | cb (EV_A_ EV_IO, wl); |
|
|
5403 | |
|
|
5404 | wl = wn; |
1619 | } |
5405 | } |
1620 | |
5406 | |
1621 | ev_init (&once->to, once_cb_to); |
5407 | if (types & (EV_TIMER | EV_STAT)) |
1622 | if (timeout >= 0.) |
5408 | for (i = timercnt + HEAP0; i-- > HEAP0; ) |
|
|
5409 | #if EV_STAT_ENABLE |
|
|
5410 | /*TODO: timer is not always active*/ |
|
|
5411 | if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb) |
1623 | { |
5412 | { |
1624 | ev_timer_set (&once->to, timeout, 0.); |
5413 | if (types & EV_STAT) |
1625 | ev_timer_start (EV_A_ &once->to); |
5414 | cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer)); |
1626 | } |
5415 | } |
1627 | } |
5416 | else |
1628 | } |
5417 | #endif |
|
|
5418 | if (types & EV_TIMER) |
|
|
5419 | cb (EV_A_ EV_TIMER, ANHE_w (timers [i])); |
1629 | |
5420 | |
1630 | #ifdef __cplusplus |
5421 | #if EV_PERIODIC_ENABLE |
1631 | } |
5422 | if (types & EV_PERIODIC) |
|
|
5423 | for (i = periodiccnt + HEAP0; i-- > HEAP0; ) |
|
|
5424 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
|
|
5425 | #endif |
|
|
5426 | |
|
|
5427 | #if EV_IDLE_ENABLE |
|
|
5428 | if (types & EV_IDLE) |
|
|
5429 | for (j = NUMPRI; j--; ) |
|
|
5430 | for (i = idlecnt [j]; i--; ) |
|
|
5431 | cb (EV_A_ EV_IDLE, idles [j][i]); |
|
|
5432 | #endif |
|
|
5433 | |
|
|
5434 | #if EV_FORK_ENABLE |
|
|
5435 | if (types & EV_FORK) |
|
|
5436 | for (i = forkcnt; i--; ) |
|
|
5437 | if (ev_cb (forks [i]) != embed_fork_cb) |
|
|
5438 | cb (EV_A_ EV_FORK, forks [i]); |
|
|
5439 | #endif |
|
|
5440 | |
|
|
5441 | #if EV_ASYNC_ENABLE |
|
|
5442 | if (types & EV_ASYNC) |
|
|
5443 | for (i = asynccnt; i--; ) |
|
|
5444 | cb (EV_A_ EV_ASYNC, asyncs [i]); |
|
|
5445 | #endif |
|
|
5446 | |
|
|
5447 | #if EV_PREPARE_ENABLE |
|
|
5448 | if (types & EV_PREPARE) |
|
|
5449 | for (i = preparecnt; i--; ) |
|
|
5450 | # if EV_EMBED_ENABLE |
|
|
5451 | if (ev_cb (prepares [i]) != embed_prepare_cb) |
1632 | #endif |
5452 | # endif |
|
|
5453 | cb (EV_A_ EV_PREPARE, prepares [i]); |
|
|
5454 | #endif |
1633 | |
5455 | |
|
|
5456 | #if EV_CHECK_ENABLE |
|
|
5457 | if (types & EV_CHECK) |
|
|
5458 | for (i = checkcnt; i--; ) |
|
|
5459 | cb (EV_A_ EV_CHECK, checks [i]); |
|
|
5460 | #endif |
|
|
5461 | |
|
|
5462 | #if EV_SIGNAL_ENABLE |
|
|
5463 | if (types & EV_SIGNAL) |
|
|
5464 | for (i = 0; i < EV_NSIG - 1; ++i) |
|
|
5465 | for (wl = signals [i].head; wl; ) |
|
|
5466 | { |
|
|
5467 | wn = wl->next; |
|
|
5468 | cb (EV_A_ EV_SIGNAL, wl); |
|
|
5469 | wl = wn; |
|
|
5470 | } |
|
|
5471 | #endif |
|
|
5472 | |
|
|
5473 | #if EV_CHILD_ENABLE |
|
|
5474 | if (types & EV_CHILD) |
|
|
5475 | for (i = (EV_PID_HASHSIZE); i--; ) |
|
|
5476 | for (wl = childs [i]; wl; ) |
|
|
5477 | { |
|
|
5478 | wn = wl->next; |
|
|
5479 | cb (EV_A_ EV_CHILD, wl); |
|
|
5480 | wl = wn; |
|
|
5481 | } |
|
|
5482 | #endif |
|
|
5483 | /* EV_STAT 0x00001000 /* stat data changed */ |
|
|
5484 | /* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
|
|
5485 | } |
|
|
5486 | #endif |
|
|
5487 | |
|
|
5488 | #if EV_MULTIPLICITY |
|
|
5489 | #include "ev_wrap.h" |
|
|
5490 | #endif |
|
|
5491 | |