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) 2007,2008 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: |
9 | * |
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10 | * 1. Redistributions of source code must retain the above copyright notice, |
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11 | * this list of conditions and the following disclaimer. |
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12 | * |
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13 | * 2. Redistributions in binary form must reproduce the above copyright |
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14 | * notice, this list of conditions and the following disclaimer in the |
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15 | * documentation and/or other materials provided with the distribution. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
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19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
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20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
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21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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22 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
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23 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
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25 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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26 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
10 | * |
27 | * |
11 | * * Redistributions of source code must retain the above copyright |
28 | * Alternatively, the contents of this file may be used under the terms of |
12 | * notice, this list of conditions and the following disclaimer. |
29 | * the GNU General Public License ("GPL") version 2 or any later version, |
13 | * |
30 | * in which case the provisions of the GPL are applicable instead of |
14 | * * Redistributions in binary form must reproduce the above |
31 | * the above. If you wish to allow the use of your version of this file |
15 | * copyright notice, this list of conditions and the following |
32 | * only under the terms of the GPL and not to allow others to use your |
16 | * disclaimer in the documentation and/or other materials provided |
33 | * version of this file under the BSD license, indicate your decision |
17 | * with the distribution. |
34 | * by deleting the provisions above and replace them with the notice |
18 | * |
35 | * and other provisions required by the GPL. If you do not delete the |
19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
36 | * provisions above, a recipient may use your version of this file under |
20 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
37 | * either the BSD or the GPL. |
21 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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22 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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23 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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24 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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25 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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30 | */ |
38 | */ |
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39 | |
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40 | #ifdef __cplusplus |
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41 | extern "C" { |
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42 | #endif |
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43 | |
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44 | /* this big block deduces configuration from config.h */ |
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45 | #ifndef EV_STANDALONE |
31 | #if EV_USE_CONFIG_H |
46 | # ifdef EV_CONFIG_H |
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47 | # include EV_CONFIG_H |
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48 | # else |
32 | # include "config.h" |
49 | # include "config.h" |
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50 | # endif |
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51 | |
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52 | # if HAVE_CLOCK_GETTIME |
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53 | # ifndef EV_USE_MONOTONIC |
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54 | # define EV_USE_MONOTONIC 1 |
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55 | # endif |
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56 | # ifndef EV_USE_REALTIME |
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57 | # define EV_USE_REALTIME 1 |
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58 | # endif |
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59 | # else |
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60 | # ifndef EV_USE_MONOTONIC |
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61 | # define EV_USE_MONOTONIC 0 |
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62 | # endif |
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63 | # ifndef EV_USE_REALTIME |
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64 | # define EV_USE_REALTIME 0 |
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65 | # endif |
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66 | # endif |
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67 | |
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68 | # ifndef EV_USE_NANOSLEEP |
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69 | # if HAVE_NANOSLEEP |
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70 | # define EV_USE_NANOSLEEP 1 |
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71 | # else |
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72 | # define EV_USE_NANOSLEEP 0 |
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73 | # endif |
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74 | # endif |
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75 | |
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76 | # ifndef EV_USE_SELECT |
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77 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
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78 | # define EV_USE_SELECT 1 |
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79 | # else |
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80 | # define EV_USE_SELECT 0 |
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81 | # endif |
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82 | # endif |
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83 | |
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84 | # ifndef EV_USE_POLL |
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85 | # if HAVE_POLL && HAVE_POLL_H |
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86 | # define EV_USE_POLL 1 |
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87 | # else |
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88 | # define EV_USE_POLL 0 |
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89 | # endif |
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90 | # endif |
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91 | |
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92 | # ifndef EV_USE_EPOLL |
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93 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
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94 | # define EV_USE_EPOLL 1 |
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95 | # else |
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96 | # define EV_USE_EPOLL 0 |
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97 | # endif |
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98 | # endif |
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99 | |
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100 | # ifndef EV_USE_KQUEUE |
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101 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
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102 | # define EV_USE_KQUEUE 1 |
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103 | # else |
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104 | # define EV_USE_KQUEUE 0 |
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105 | # endif |
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106 | # endif |
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107 | |
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108 | # ifndef EV_USE_PORT |
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109 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
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110 | # define EV_USE_PORT 1 |
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111 | # else |
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112 | # define EV_USE_PORT 0 |
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113 | # endif |
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114 | # endif |
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115 | |
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116 | # ifndef EV_USE_INOTIFY |
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117 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
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118 | # define EV_USE_INOTIFY 1 |
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119 | # else |
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120 | # define EV_USE_INOTIFY 0 |
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121 | # endif |
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122 | # endif |
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123 | |
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124 | # ifndef EV_USE_EVENTFD |
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125 | # if HAVE_EVENTFD |
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126 | # define EV_USE_EVENTFD 1 |
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127 | # else |
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128 | # define EV_USE_EVENTFD 0 |
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129 | # endif |
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130 | # endif |
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131 | |
33 | #endif |
132 | #endif |
34 | |
133 | |
35 | #include <math.h> |
134 | #include <math.h> |
36 | #include <stdlib.h> |
135 | #include <stdlib.h> |
37 | #include <unistd.h> |
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38 | #include <fcntl.h> |
136 | #include <fcntl.h> |
39 | #include <signal.h> |
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40 | #include <stddef.h> |
137 | #include <stddef.h> |
41 | |
138 | |
42 | #include <stdio.h> |
139 | #include <stdio.h> |
43 | |
140 | |
44 | #include <assert.h> |
141 | #include <assert.h> |
45 | #include <errno.h> |
142 | #include <errno.h> |
46 | #include <sys/types.h> |
143 | #include <sys/types.h> |
47 | #include <sys/wait.h> |
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48 | #include <sys/time.h> |
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49 | #include <time.h> |
144 | #include <time.h> |
50 | |
145 | |
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146 | #include <signal.h> |
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147 | |
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148 | #ifdef EV_H |
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149 | # include EV_H |
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150 | #else |
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151 | # include "ev.h" |
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152 | #endif |
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153 | |
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154 | #ifndef _WIN32 |
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155 | # include <sys/time.h> |
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156 | # include <sys/wait.h> |
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157 | # include <unistd.h> |
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158 | #else |
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159 | # include <io.h> |
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160 | # define WIN32_LEAN_AND_MEAN |
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161 | # include <windows.h> |
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162 | # ifndef EV_SELECT_IS_WINSOCKET |
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163 | # define EV_SELECT_IS_WINSOCKET 1 |
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164 | # endif |
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165 | #endif |
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166 | |
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167 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
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168 | |
51 | #ifndef EV_USE_MONOTONIC |
169 | #ifndef EV_USE_MONOTONIC |
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170 | # if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 |
52 | # define EV_USE_MONOTONIC 1 |
171 | # define EV_USE_MONOTONIC 1 |
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172 | # else |
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173 | # define EV_USE_MONOTONIC 0 |
53 | #endif |
174 | # endif |
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175 | #endif |
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176 | |
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177 | #ifndef EV_USE_REALTIME |
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178 | # define EV_USE_REALTIME 0 |
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179 | #endif |
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180 | |
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181 | #ifndef EV_USE_NANOSLEEP |
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182 | # if _POSIX_C_SOURCE >= 199309L |
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183 | # define EV_USE_NANOSLEEP 1 |
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184 | # else |
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185 | # define EV_USE_NANOSLEEP 0 |
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186 | # endif |
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187 | #endif |
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188 | |
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189 | #ifndef EV_USE_SELECT |
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190 | # define EV_USE_SELECT 1 |
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191 | #endif |
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192 | |
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193 | #ifndef EV_USE_POLL |
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194 | # ifdef _WIN32 |
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195 | # define EV_USE_POLL 0 |
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196 | # else |
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197 | # define EV_USE_POLL 1 |
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198 | # endif |
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199 | #endif |
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200 | |
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201 | #ifndef EV_USE_EPOLL |
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202 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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203 | # define EV_USE_EPOLL 1 |
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204 | # else |
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205 | # define EV_USE_EPOLL 0 |
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206 | # endif |
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207 | #endif |
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208 | |
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209 | #ifndef EV_USE_KQUEUE |
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210 | # define EV_USE_KQUEUE 0 |
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211 | #endif |
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212 | |
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213 | #ifndef EV_USE_PORT |
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214 | # define EV_USE_PORT 0 |
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215 | #endif |
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216 | |
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217 | #ifndef EV_USE_INOTIFY |
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218 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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219 | # define EV_USE_INOTIFY 1 |
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220 | # else |
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221 | # define EV_USE_INOTIFY 0 |
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222 | # endif |
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223 | #endif |
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224 | |
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225 | #ifndef EV_PID_HASHSIZE |
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226 | # if EV_MINIMAL |
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227 | # define EV_PID_HASHSIZE 1 |
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228 | # else |
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229 | # define EV_PID_HASHSIZE 16 |
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230 | # endif |
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231 | #endif |
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232 | |
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233 | #ifndef EV_INOTIFY_HASHSIZE |
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234 | # if EV_MINIMAL |
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235 | # define EV_INOTIFY_HASHSIZE 1 |
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236 | # else |
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237 | # define EV_INOTIFY_HASHSIZE 16 |
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238 | # endif |
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239 | #endif |
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240 | |
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241 | #ifndef EV_USE_EVENTFD |
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242 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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243 | # define EV_USE_EVENTFD 1 |
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244 | # else |
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245 | # define EV_USE_EVENTFD 0 |
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246 | # endif |
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247 | #endif |
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248 | |
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249 | #if 0 /* debugging */ |
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250 | # define EV_VERIFY 3 |
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251 | # define EV_USE_4HEAP 1 |
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252 | # define EV_HEAP_CACHE_AT 1 |
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253 | #endif |
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254 | |
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255 | #ifndef EV_VERIFY |
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256 | # define EV_VERIFY !EV_MINIMAL |
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257 | #endif |
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258 | |
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259 | #ifndef EV_USE_4HEAP |
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260 | # define EV_USE_4HEAP !EV_MINIMAL |
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261 | #endif |
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262 | |
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263 | #ifndef EV_HEAP_CACHE_AT |
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264 | # define EV_HEAP_CACHE_AT !EV_MINIMAL |
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265 | #endif |
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266 | |
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267 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
54 | |
268 | |
55 | #ifndef CLOCK_MONOTONIC |
269 | #ifndef CLOCK_MONOTONIC |
56 | # undef EV_USE_MONOTONIC |
270 | # undef EV_USE_MONOTONIC |
57 | # define EV_USE_MONOTONIC 0 |
271 | # define EV_USE_MONOTONIC 0 |
58 | #endif |
272 | #endif |
59 | |
273 | |
60 | #ifndef EV_USE_SELECT |
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61 | # define EV_USE_SELECT 1 |
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62 | #endif |
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63 | |
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64 | #ifndef EV_USE_EPOLL |
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65 | # define EV_USE_EPOLL 0 |
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66 | #endif |
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67 | |
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68 | #ifndef CLOCK_REALTIME |
274 | #ifndef CLOCK_REALTIME |
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275 | # undef EV_USE_REALTIME |
69 | # define EV_USE_REALTIME 0 |
276 | # define EV_USE_REALTIME 0 |
70 | #endif |
277 | #endif |
71 | #ifndef EV_USE_REALTIME |
278 | |
72 | # define EV_USE_REALTIME 1 /* posix requirement, but might be slower */ |
279 | #if !EV_STAT_ENABLE |
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280 | # undef EV_USE_INOTIFY |
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281 | # define EV_USE_INOTIFY 0 |
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282 | #endif |
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283 | |
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284 | #if !EV_USE_NANOSLEEP |
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285 | # ifndef _WIN32 |
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286 | # include <sys/select.h> |
73 | #endif |
287 | # endif |
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288 | #endif |
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289 | |
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290 | #if EV_USE_INOTIFY |
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291 | # include <sys/inotify.h> |
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292 | #endif |
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293 | |
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294 | #if EV_SELECT_IS_WINSOCKET |
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295 | # include <winsock.h> |
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296 | #endif |
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297 | |
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298 | #if EV_USE_EVENTFD |
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299 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
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300 | # include <stdint.h> |
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301 | # ifdef __cplusplus |
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302 | extern "C" { |
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303 | # endif |
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304 | int eventfd (unsigned int initval, int flags); |
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305 | # ifdef __cplusplus |
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306 | } |
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307 | # endif |
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308 | #endif |
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309 | |
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310 | /**/ |
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311 | |
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312 | #if EV_VERIFY >= 3 |
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313 | # define EV_FREQUENT_CHECK ev_loop_verify (EV_A) |
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314 | #else |
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315 | # define EV_FREQUENT_CHECK do { } while (0) |
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316 | #endif |
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317 | |
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318 | /* |
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319 | * This is used to avoid floating point rounding problems. |
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320 | * It is added to ev_rt_now when scheduling periodics |
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321 | * to ensure progress, time-wise, even when rounding |
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322 | * errors are against us. |
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323 | * This value is good at least till the year 4000. |
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324 | * Better solutions welcome. |
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325 | */ |
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326 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
74 | |
327 | |
75 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
328 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
76 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detetc time jumps) */ |
329 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
77 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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78 | #define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ |
330 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
79 | |
331 | |
80 | #include "ev.h" |
332 | #if __GNUC__ >= 4 |
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333 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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334 | # define noinline __attribute__ ((noinline)) |
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335 | #else |
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336 | # define expect(expr,value) (expr) |
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337 | # define noinline |
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338 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
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339 | # define inline |
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340 | # endif |
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341 | #endif |
81 | |
342 | |
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343 | #define expect_false(expr) expect ((expr) != 0, 0) |
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344 | #define expect_true(expr) expect ((expr) != 0, 1) |
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345 | #define inline_size static inline |
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346 | |
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347 | #if EV_MINIMAL |
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348 | # define inline_speed static noinline |
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349 | #else |
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350 | # define inline_speed static inline |
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351 | #endif |
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352 | |
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353 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
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354 | #define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
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355 | |
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356 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
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357 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
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358 | |
82 | typedef struct ev_watcher *W; |
359 | typedef ev_watcher *W; |
83 | typedef struct ev_watcher_list *WL; |
360 | typedef ev_watcher_list *WL; |
84 | typedef struct ev_watcher_time *WT; |
361 | typedef ev_watcher_time *WT; |
85 | |
362 | |
86 | static ev_tstamp now, diff; /* monotonic clock */ |
363 | #define ev_active(w) ((W)(w))->active |
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364 | #define ev_at(w) ((WT)(w))->at |
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365 | |
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366 | #if EV_USE_MONOTONIC |
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367 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
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368 | /* giving it a reasonably high chance of working on typical architetcures */ |
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369 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
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370 | #endif |
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371 | |
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372 | #ifdef _WIN32 |
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373 | # include "ev_win32.c" |
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374 | #endif |
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375 | |
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376 | /*****************************************************************************/ |
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377 | |
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378 | static void (*syserr_cb)(const char *msg); |
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379 | |
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380 | void |
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381 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
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382 | { |
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383 | syserr_cb = cb; |
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384 | } |
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385 | |
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386 | static void noinline |
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387 | syserr (const char *msg) |
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388 | { |
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389 | if (!msg) |
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390 | msg = "(libev) system error"; |
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391 | |
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392 | if (syserr_cb) |
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393 | syserr_cb (msg); |
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394 | else |
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395 | { |
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396 | perror (msg); |
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397 | abort (); |
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398 | } |
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399 | } |
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400 | |
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401 | static void * |
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402 | ev_realloc_emul (void *ptr, long size) |
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403 | { |
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404 | /* some systems, notably openbsd and darwin, fail to properly |
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405 | * implement realloc (x, 0) (as required by both ansi c-98 and |
|
|
406 | * the single unix specification, so work around them here. |
|
|
407 | */ |
|
|
408 | |
|
|
409 | if (size) |
|
|
410 | return realloc (ptr, size); |
|
|
411 | |
|
|
412 | free (ptr); |
|
|
413 | return 0; |
|
|
414 | } |
|
|
415 | |
|
|
416 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
|
|
417 | |
|
|
418 | void |
|
|
419 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
|
|
420 | { |
|
|
421 | alloc = cb; |
|
|
422 | } |
|
|
423 | |
|
|
424 | inline_speed void * |
|
|
425 | ev_realloc (void *ptr, long size) |
|
|
426 | { |
|
|
427 | ptr = alloc (ptr, size); |
|
|
428 | |
|
|
429 | if (!ptr && size) |
|
|
430 | { |
|
|
431 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
|
|
432 | abort (); |
|
|
433 | } |
|
|
434 | |
|
|
435 | return ptr; |
|
|
436 | } |
|
|
437 | |
|
|
438 | #define ev_malloc(size) ev_realloc (0, (size)) |
|
|
439 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
|
|
440 | |
|
|
441 | /*****************************************************************************/ |
|
|
442 | |
|
|
443 | typedef struct |
|
|
444 | { |
|
|
445 | WL head; |
|
|
446 | unsigned char events; |
|
|
447 | unsigned char reify; |
|
|
448 | #if EV_SELECT_IS_WINSOCKET |
|
|
449 | SOCKET handle; |
|
|
450 | #endif |
|
|
451 | } ANFD; |
|
|
452 | |
|
|
453 | typedef struct |
|
|
454 | { |
|
|
455 | W w; |
|
|
456 | int events; |
|
|
457 | } ANPENDING; |
|
|
458 | |
|
|
459 | #if EV_USE_INOTIFY |
|
|
460 | /* hash table entry per inotify-id */ |
|
|
461 | typedef struct |
|
|
462 | { |
|
|
463 | WL head; |
|
|
464 | } ANFS; |
|
|
465 | #endif |
|
|
466 | |
|
|
467 | /* Heap Entry */ |
|
|
468 | #if EV_HEAP_CACHE_AT |
|
|
469 | typedef struct { |
|
|
470 | ev_tstamp at; |
|
|
471 | WT w; |
|
|
472 | } ANHE; |
|
|
473 | |
|
|
474 | #define ANHE_w(he) (he).w /* access watcher, read-write */ |
|
|
475 | #define ANHE_at(he) (he).at /* access cached at, read-only */ |
|
|
476 | #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ |
|
|
477 | #else |
|
|
478 | typedef WT ANHE; |
|
|
479 | |
|
|
480 | #define ANHE_w(he) (he) |
|
|
481 | #define ANHE_at(he) (he)->at |
|
|
482 | #define ANHE_at_cache(he) |
|
|
483 | #endif |
|
|
484 | |
|
|
485 | #if EV_MULTIPLICITY |
|
|
486 | |
|
|
487 | struct ev_loop |
|
|
488 | { |
|
|
489 | ev_tstamp ev_rt_now; |
|
|
490 | #define ev_rt_now ((loop)->ev_rt_now) |
|
|
491 | #define VAR(name,decl) decl; |
|
|
492 | #include "ev_vars.h" |
|
|
493 | #undef VAR |
|
|
494 | }; |
|
|
495 | #include "ev_wrap.h" |
|
|
496 | |
|
|
497 | static struct ev_loop default_loop_struct; |
|
|
498 | struct ev_loop *ev_default_loop_ptr; |
|
|
499 | |
|
|
500 | #else |
|
|
501 | |
87 | ev_tstamp ev_now; |
502 | ev_tstamp ev_rt_now; |
88 | int ev_method; |
503 | #define VAR(name,decl) static decl; |
|
|
504 | #include "ev_vars.h" |
|
|
505 | #undef VAR |
89 | |
506 | |
90 | static int have_monotonic; /* runtime */ |
507 | static int ev_default_loop_ptr; |
91 | |
508 | |
92 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
509 | #endif |
93 | static void (*method_modify)(int fd, int oev, int nev); |
|
|
94 | static void (*method_poll)(ev_tstamp timeout); |
|
|
95 | |
510 | |
96 | /*****************************************************************************/ |
511 | /*****************************************************************************/ |
97 | |
512 | |
98 | ev_tstamp |
513 | ev_tstamp |
99 | ev_time (void) |
514 | ev_time (void) |
… | |
… | |
107 | gettimeofday (&tv, 0); |
522 | gettimeofday (&tv, 0); |
108 | return tv.tv_sec + tv.tv_usec * 1e-6; |
523 | return tv.tv_sec + tv.tv_usec * 1e-6; |
109 | #endif |
524 | #endif |
110 | } |
525 | } |
111 | |
526 | |
112 | static ev_tstamp |
527 | ev_tstamp inline_size |
113 | get_clock (void) |
528 | get_clock (void) |
114 | { |
529 | { |
115 | #if EV_USE_MONOTONIC |
530 | #if EV_USE_MONOTONIC |
116 | if (have_monotonic) |
531 | if (expect_true (have_monotonic)) |
117 | { |
532 | { |
118 | struct timespec ts; |
533 | struct timespec ts; |
119 | clock_gettime (CLOCK_MONOTONIC, &ts); |
534 | clock_gettime (CLOCK_MONOTONIC, &ts); |
120 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
535 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
121 | } |
536 | } |
122 | #endif |
537 | #endif |
123 | |
538 | |
124 | return ev_time (); |
539 | return ev_time (); |
125 | } |
540 | } |
126 | |
541 | |
127 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
542 | #if EV_MULTIPLICITY |
|
|
543 | ev_tstamp |
|
|
544 | ev_now (EV_P) |
|
|
545 | { |
|
|
546 | return ev_rt_now; |
|
|
547 | } |
|
|
548 | #endif |
128 | |
549 | |
129 | #define array_needsize(base,cur,cnt,init) \ |
550 | void |
130 | if ((cnt) > cur) \ |
551 | ev_sleep (ev_tstamp delay) |
131 | { \ |
552 | { |
132 | int newcnt = cur; \ |
553 | if (delay > 0.) |
133 | do \ |
|
|
134 | { \ |
|
|
135 | newcnt = array_roundsize (base, newcnt << 1); \ |
|
|
136 | } \ |
|
|
137 | while ((cnt) > newcnt); \ |
|
|
138 | \ |
|
|
139 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
|
|
140 | init (base + cur, newcnt - cur); \ |
|
|
141 | cur = newcnt; \ |
|
|
142 | } |
554 | { |
|
|
555 | #if EV_USE_NANOSLEEP |
|
|
556 | struct timespec ts; |
|
|
557 | |
|
|
558 | ts.tv_sec = (time_t)delay; |
|
|
559 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
|
|
560 | |
|
|
561 | nanosleep (&ts, 0); |
|
|
562 | #elif defined(_WIN32) |
|
|
563 | Sleep ((unsigned long)(delay * 1e3)); |
|
|
564 | #else |
|
|
565 | struct timeval tv; |
|
|
566 | |
|
|
567 | tv.tv_sec = (time_t)delay; |
|
|
568 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
|
|
569 | |
|
|
570 | select (0, 0, 0, 0, &tv); |
|
|
571 | #endif |
|
|
572 | } |
|
|
573 | } |
143 | |
574 | |
144 | /*****************************************************************************/ |
575 | /*****************************************************************************/ |
145 | |
576 | |
146 | typedef struct |
577 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
147 | { |
|
|
148 | struct ev_io *head; |
|
|
149 | unsigned char events; |
|
|
150 | unsigned char reify; |
|
|
151 | } ANFD; |
|
|
152 | |
578 | |
153 | static ANFD *anfds; |
579 | int inline_size |
154 | static int anfdmax; |
580 | array_nextsize (int elem, int cur, int cnt) |
|
|
581 | { |
|
|
582 | int ncur = cur + 1; |
155 | |
583 | |
156 | static void |
584 | do |
|
|
585 | ncur <<= 1; |
|
|
586 | while (cnt > ncur); |
|
|
587 | |
|
|
588 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ |
|
|
589 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
|
|
590 | { |
|
|
591 | ncur *= elem; |
|
|
592 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
|
|
593 | ncur = ncur - sizeof (void *) * 4; |
|
|
594 | ncur /= elem; |
|
|
595 | } |
|
|
596 | |
|
|
597 | return ncur; |
|
|
598 | } |
|
|
599 | |
|
|
600 | static noinline void * |
|
|
601 | array_realloc (int elem, void *base, int *cur, int cnt) |
|
|
602 | { |
|
|
603 | *cur = array_nextsize (elem, *cur, cnt); |
|
|
604 | return ev_realloc (base, elem * *cur); |
|
|
605 | } |
|
|
606 | |
|
|
607 | #define array_needsize(type,base,cur,cnt,init) \ |
|
|
608 | if (expect_false ((cnt) > (cur))) \ |
|
|
609 | { \ |
|
|
610 | int ocur_ = (cur); \ |
|
|
611 | (base) = (type *)array_realloc \ |
|
|
612 | (sizeof (type), (base), &(cur), (cnt)); \ |
|
|
613 | init ((base) + (ocur_), (cur) - ocur_); \ |
|
|
614 | } |
|
|
615 | |
|
|
616 | #if 0 |
|
|
617 | #define array_slim(type,stem) \ |
|
|
618 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
|
|
619 | { \ |
|
|
620 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
|
|
621 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
|
|
622 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
|
|
623 | } |
|
|
624 | #endif |
|
|
625 | |
|
|
626 | #define array_free(stem, idx) \ |
|
|
627 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
|
|
628 | |
|
|
629 | /*****************************************************************************/ |
|
|
630 | |
|
|
631 | void noinline |
|
|
632 | ev_feed_event (EV_P_ void *w, int revents) |
|
|
633 | { |
|
|
634 | W w_ = (W)w; |
|
|
635 | int pri = ABSPRI (w_); |
|
|
636 | |
|
|
637 | if (expect_false (w_->pending)) |
|
|
638 | pendings [pri][w_->pending - 1].events |= revents; |
|
|
639 | else |
|
|
640 | { |
|
|
641 | w_->pending = ++pendingcnt [pri]; |
|
|
642 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
|
|
643 | pendings [pri][w_->pending - 1].w = w_; |
|
|
644 | pendings [pri][w_->pending - 1].events = revents; |
|
|
645 | } |
|
|
646 | } |
|
|
647 | |
|
|
648 | void inline_speed |
|
|
649 | queue_events (EV_P_ W *events, int eventcnt, int type) |
|
|
650 | { |
|
|
651 | int i; |
|
|
652 | |
|
|
653 | for (i = 0; i < eventcnt; ++i) |
|
|
654 | ev_feed_event (EV_A_ events [i], type); |
|
|
655 | } |
|
|
656 | |
|
|
657 | /*****************************************************************************/ |
|
|
658 | |
|
|
659 | void inline_size |
157 | anfds_init (ANFD *base, int count) |
660 | anfds_init (ANFD *base, int count) |
158 | { |
661 | { |
159 | while (count--) |
662 | while (count--) |
160 | { |
663 | { |
161 | base->head = 0; |
664 | base->head = 0; |
… | |
… | |
164 | |
667 | |
165 | ++base; |
668 | ++base; |
166 | } |
669 | } |
167 | } |
670 | } |
168 | |
671 | |
169 | typedef struct |
672 | void inline_speed |
170 | { |
|
|
171 | W w; |
|
|
172 | int events; |
|
|
173 | } ANPENDING; |
|
|
174 | |
|
|
175 | static ANPENDING *pendings; |
|
|
176 | static int pendingmax, pendingcnt; |
|
|
177 | |
|
|
178 | static void |
|
|
179 | event (W w, int events) |
|
|
180 | { |
|
|
181 | if (w->pending) |
|
|
182 | { |
|
|
183 | pendings [w->pending - 1].events |= events; |
|
|
184 | return; |
|
|
185 | } |
|
|
186 | |
|
|
187 | w->pending = ++pendingcnt; |
|
|
188 | array_needsize (pendings, pendingmax, pendingcnt, ); |
|
|
189 | pendings [pendingcnt - 1].w = w; |
|
|
190 | pendings [pendingcnt - 1].events = events; |
|
|
191 | } |
|
|
192 | |
|
|
193 | static void |
|
|
194 | queue_events (W *events, int eventcnt, int type) |
|
|
195 | { |
|
|
196 | int i; |
|
|
197 | |
|
|
198 | for (i = 0; i < eventcnt; ++i) |
|
|
199 | event (events [i], type); |
|
|
200 | } |
|
|
201 | |
|
|
202 | static void |
|
|
203 | fd_event (int fd, int events) |
673 | fd_event (EV_P_ int fd, int revents) |
204 | { |
674 | { |
205 | ANFD *anfd = anfds + fd; |
675 | ANFD *anfd = anfds + fd; |
206 | struct ev_io *w; |
676 | ev_io *w; |
207 | |
677 | |
208 | for (w = anfd->head; w; w = w->next) |
678 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
209 | { |
679 | { |
210 | int ev = w->events & events; |
680 | int ev = w->events & revents; |
211 | |
681 | |
212 | if (ev) |
682 | if (ev) |
213 | event ((W)w, ev); |
683 | ev_feed_event (EV_A_ (W)w, ev); |
214 | } |
684 | } |
215 | } |
685 | } |
216 | |
686 | |
217 | /*****************************************************************************/ |
687 | void |
|
|
688 | ev_feed_fd_event (EV_P_ int fd, int revents) |
|
|
689 | { |
|
|
690 | if (fd >= 0 && fd < anfdmax) |
|
|
691 | fd_event (EV_A_ fd, revents); |
|
|
692 | } |
218 | |
693 | |
219 | static int *fdchanges; |
694 | void inline_size |
220 | static int fdchangemax, fdchangecnt; |
695 | fd_reify (EV_P) |
221 | |
|
|
222 | static void |
|
|
223 | fd_reify (void) |
|
|
224 | { |
696 | { |
225 | int i; |
697 | int i; |
226 | |
698 | |
227 | for (i = 0; i < fdchangecnt; ++i) |
699 | for (i = 0; i < fdchangecnt; ++i) |
228 | { |
700 | { |
229 | int fd = fdchanges [i]; |
701 | int fd = fdchanges [i]; |
230 | ANFD *anfd = anfds + fd; |
702 | ANFD *anfd = anfds + fd; |
231 | struct ev_io *w; |
703 | ev_io *w; |
232 | |
704 | |
233 | int events = 0; |
705 | unsigned char events = 0; |
234 | |
706 | |
235 | for (w = anfd->head; w; w = w->next) |
707 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
236 | events |= w->events; |
708 | events |= (unsigned char)w->events; |
237 | |
709 | |
238 | anfd->reify = 0; |
710 | #if EV_SELECT_IS_WINSOCKET |
239 | |
711 | if (events) |
240 | if (anfd->events != events) |
|
|
241 | { |
712 | { |
242 | method_modify (fd, anfd->events, events); |
713 | unsigned long arg; |
243 | anfd->events = events; |
714 | #ifdef EV_FD_TO_WIN32_HANDLE |
|
|
715 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
716 | #else |
|
|
717 | anfd->handle = _get_osfhandle (fd); |
|
|
718 | #endif |
|
|
719 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
244 | } |
720 | } |
|
|
721 | #endif |
|
|
722 | |
|
|
723 | { |
|
|
724 | unsigned char o_events = anfd->events; |
|
|
725 | unsigned char o_reify = anfd->reify; |
|
|
726 | |
|
|
727 | anfd->reify = 0; |
|
|
728 | anfd->events = events; |
|
|
729 | |
|
|
730 | if (o_events != events || o_reify & EV_IOFDSET) |
|
|
731 | backend_modify (EV_A_ fd, o_events, events); |
|
|
732 | } |
245 | } |
733 | } |
246 | |
734 | |
247 | fdchangecnt = 0; |
735 | fdchangecnt = 0; |
248 | } |
736 | } |
249 | |
737 | |
250 | static void |
738 | void inline_size |
251 | fd_change (int fd) |
739 | fd_change (EV_P_ int fd, int flags) |
252 | { |
740 | { |
253 | if (anfds [fd].reify || fdchangecnt < 0) |
741 | unsigned char reify = anfds [fd].reify; |
254 | return; |
|
|
255 | |
|
|
256 | anfds [fd].reify = 1; |
742 | anfds [fd].reify |= flags; |
257 | |
743 | |
|
|
744 | if (expect_true (!reify)) |
|
|
745 | { |
258 | ++fdchangecnt; |
746 | ++fdchangecnt; |
259 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
747 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
260 | fdchanges [fdchangecnt - 1] = fd; |
748 | fdchanges [fdchangecnt - 1] = fd; |
|
|
749 | } |
|
|
750 | } |
|
|
751 | |
|
|
752 | void inline_speed |
|
|
753 | fd_kill (EV_P_ int fd) |
|
|
754 | { |
|
|
755 | ev_io *w; |
|
|
756 | |
|
|
757 | while ((w = (ev_io *)anfds [fd].head)) |
|
|
758 | { |
|
|
759 | ev_io_stop (EV_A_ w); |
|
|
760 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
761 | } |
|
|
762 | } |
|
|
763 | |
|
|
764 | int inline_size |
|
|
765 | fd_valid (int fd) |
|
|
766 | { |
|
|
767 | #ifdef _WIN32 |
|
|
768 | return _get_osfhandle (fd) != -1; |
|
|
769 | #else |
|
|
770 | return fcntl (fd, F_GETFD) != -1; |
|
|
771 | #endif |
261 | } |
772 | } |
262 | |
773 | |
263 | /* called on EBADF to verify fds */ |
774 | /* called on EBADF to verify fds */ |
264 | static void |
775 | static void noinline |
265 | fd_recheck (void) |
776 | fd_ebadf (EV_P) |
266 | { |
777 | { |
267 | int fd; |
778 | int fd; |
268 | |
779 | |
269 | for (fd = 0; fd < anfdmax; ++fd) |
780 | for (fd = 0; fd < anfdmax; ++fd) |
270 | if (anfds [fd].events) |
781 | if (anfds [fd].events) |
271 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
782 | if (!fd_valid (fd) && errno == EBADF) |
272 | while (anfds [fd].head) |
783 | fd_kill (EV_A_ fd); |
|
|
784 | } |
|
|
785 | |
|
|
786 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
787 | static void noinline |
|
|
788 | fd_enomem (EV_P) |
|
|
789 | { |
|
|
790 | int fd; |
|
|
791 | |
|
|
792 | for (fd = anfdmax; fd--; ) |
|
|
793 | if (anfds [fd].events) |
273 | { |
794 | { |
274 | ev_io_stop (anfds [fd].head); |
795 | fd_kill (EV_A_ fd); |
275 | event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE); |
796 | return; |
276 | } |
797 | } |
|
|
798 | } |
|
|
799 | |
|
|
800 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
|
|
801 | static void noinline |
|
|
802 | fd_rearm_all (EV_P) |
|
|
803 | { |
|
|
804 | int fd; |
|
|
805 | |
|
|
806 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
807 | if (anfds [fd].events) |
|
|
808 | { |
|
|
809 | anfds [fd].events = 0; |
|
|
810 | fd_change (EV_A_ fd, EV_IOFDSET | 1); |
|
|
811 | } |
277 | } |
812 | } |
278 | |
813 | |
279 | /*****************************************************************************/ |
814 | /*****************************************************************************/ |
280 | |
815 | |
281 | static struct ev_timer **timers; |
816 | /* |
282 | static int timermax, timercnt; |
817 | * the heap functions want a real array index. array index 0 uis guaranteed to not |
|
|
818 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
|
|
819 | * the branching factor of the d-tree. |
|
|
820 | */ |
283 | |
821 | |
284 | static struct ev_periodic **periodics; |
822 | /* |
285 | static int periodicmax, periodiccnt; |
823 | * at the moment we allow libev the luxury of two heaps, |
|
|
824 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
|
|
825 | * which is more cache-efficient. |
|
|
826 | * the difference is about 5% with 50000+ watchers. |
|
|
827 | */ |
|
|
828 | #if EV_USE_4HEAP |
286 | |
829 | |
287 | static void |
830 | #define DHEAP 4 |
288 | upheap (WT *timers, int k) |
831 | #define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
289 | { |
832 | #define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) |
290 | WT w = timers [k]; |
833 | #define UPHEAP_DONE(p,k) ((p) == (k)) |
291 | |
834 | |
292 | while (k && timers [k >> 1]->at > w->at) |
835 | /* away from the root */ |
293 | { |
836 | void inline_speed |
294 | timers [k] = timers [k >> 1]; |
|
|
295 | timers [k]->active = k + 1; |
|
|
296 | k >>= 1; |
|
|
297 | } |
|
|
298 | |
|
|
299 | timers [k] = w; |
|
|
300 | timers [k]->active = k + 1; |
|
|
301 | |
|
|
302 | } |
|
|
303 | |
|
|
304 | static void |
|
|
305 | downheap (WT *timers, int N, int k) |
837 | downheap (ANHE *heap, int N, int k) |
306 | { |
838 | { |
307 | WT w = timers [k]; |
839 | ANHE he = heap [k]; |
|
|
840 | ANHE *E = heap + N + HEAP0; |
308 | |
841 | |
309 | while (k < (N >> 1)) |
842 | for (;;) |
310 | { |
843 | { |
311 | int j = k << 1; |
844 | ev_tstamp minat; |
|
|
845 | ANHE *minpos; |
|
|
846 | ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; |
312 | |
847 | |
313 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
848 | /* find minimum child */ |
|
|
849 | if (expect_true (pos + DHEAP - 1 < E)) |
314 | ++j; |
850 | { |
315 | |
851 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
316 | if (w->at <= timers [j]->at) |
852 | if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
853 | if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
854 | if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
855 | } |
|
|
856 | else if (pos < E) |
|
|
857 | { |
|
|
858 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
859 | if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
860 | if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
861 | if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
862 | } |
|
|
863 | else |
317 | break; |
864 | break; |
318 | |
865 | |
319 | timers [k] = timers [j]; |
866 | if (ANHE_at (he) <= minat) |
320 | timers [k]->active = k + 1; |
867 | break; |
|
|
868 | |
|
|
869 | heap [k] = *minpos; |
|
|
870 | ev_active (ANHE_w (*minpos)) = k; |
|
|
871 | |
|
|
872 | k = minpos - heap; |
|
|
873 | } |
|
|
874 | |
|
|
875 | heap [k] = he; |
|
|
876 | ev_active (ANHE_w (he)) = k; |
|
|
877 | } |
|
|
878 | |
|
|
879 | #else /* 4HEAP */ |
|
|
880 | |
|
|
881 | #define HEAP0 1 |
|
|
882 | #define HPARENT(k) ((k) >> 1) |
|
|
883 | #define UPHEAP_DONE(p,k) (!(p)) |
|
|
884 | |
|
|
885 | /* away from the root */ |
|
|
886 | void inline_speed |
|
|
887 | downheap (ANHE *heap, int N, int k) |
|
|
888 | { |
|
|
889 | ANHE he = heap [k]; |
|
|
890 | |
|
|
891 | for (;;) |
|
|
892 | { |
|
|
893 | int c = k << 1; |
|
|
894 | |
|
|
895 | if (c > N + HEAP0 - 1) |
|
|
896 | break; |
|
|
897 | |
|
|
898 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
|
|
899 | ? 1 : 0; |
|
|
900 | |
|
|
901 | if (ANHE_at (he) <= ANHE_at (heap [c])) |
|
|
902 | break; |
|
|
903 | |
|
|
904 | heap [k] = heap [c]; |
|
|
905 | ev_active (ANHE_w (heap [k])) = k; |
|
|
906 | |
321 | k = j; |
907 | k = c; |
|
|
908 | } |
|
|
909 | |
|
|
910 | heap [k] = he; |
|
|
911 | ev_active (ANHE_w (he)) = k; |
|
|
912 | } |
|
|
913 | #endif |
|
|
914 | |
|
|
915 | /* towards the root */ |
|
|
916 | void inline_speed |
|
|
917 | upheap (ANHE *heap, int k) |
|
|
918 | { |
|
|
919 | ANHE he = heap [k]; |
|
|
920 | |
|
|
921 | for (;;) |
322 | } |
922 | { |
|
|
923 | int p = HPARENT (k); |
323 | |
924 | |
324 | timers [k] = w; |
925 | if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he)) |
325 | timers [k]->active = k + 1; |
926 | break; |
|
|
927 | |
|
|
928 | heap [k] = heap [p]; |
|
|
929 | ev_active (ANHE_w (heap [k])) = k; |
|
|
930 | k = p; |
|
|
931 | } |
|
|
932 | |
|
|
933 | heap [k] = he; |
|
|
934 | ev_active (ANHE_w (he)) = k; |
|
|
935 | } |
|
|
936 | |
|
|
937 | void inline_size |
|
|
938 | adjustheap (ANHE *heap, int N, int k) |
|
|
939 | { |
|
|
940 | if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) |
|
|
941 | upheap (heap, k); |
|
|
942 | else |
|
|
943 | downheap (heap, N, k); |
|
|
944 | } |
|
|
945 | |
|
|
946 | /* rebuild the heap: this function is used only once and executed rarely */ |
|
|
947 | void inline_size |
|
|
948 | reheap (ANHE *heap, int N) |
|
|
949 | { |
|
|
950 | int i; |
|
|
951 | |
|
|
952 | /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ |
|
|
953 | /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ |
|
|
954 | for (i = 0; i < N; ++i) |
|
|
955 | upheap (heap, i + HEAP0); |
326 | } |
956 | } |
327 | |
957 | |
328 | /*****************************************************************************/ |
958 | /*****************************************************************************/ |
329 | |
959 | |
330 | typedef struct |
960 | typedef struct |
331 | { |
961 | { |
332 | struct ev_signal *head; |
962 | WL head; |
333 | sig_atomic_t volatile gotsig; |
963 | EV_ATOMIC_T gotsig; |
334 | } ANSIG; |
964 | } ANSIG; |
335 | |
965 | |
336 | static ANSIG *signals; |
966 | static ANSIG *signals; |
337 | static int signalmax; |
967 | static int signalmax; |
338 | |
968 | |
339 | static int sigpipe [2]; |
969 | static EV_ATOMIC_T gotsig; |
340 | static sig_atomic_t volatile gotsig; |
|
|
341 | static struct ev_io sigev; |
|
|
342 | |
970 | |
343 | static void |
971 | void inline_size |
344 | signals_init (ANSIG *base, int count) |
972 | signals_init (ANSIG *base, int count) |
345 | { |
973 | { |
346 | while (count--) |
974 | while (count--) |
347 | { |
975 | { |
348 | base->head = 0; |
976 | base->head = 0; |
… | |
… | |
350 | |
978 | |
351 | ++base; |
979 | ++base; |
352 | } |
980 | } |
353 | } |
981 | } |
354 | |
982 | |
|
|
983 | /*****************************************************************************/ |
|
|
984 | |
|
|
985 | void inline_speed |
|
|
986 | fd_intern (int fd) |
|
|
987 | { |
|
|
988 | #ifdef _WIN32 |
|
|
989 | unsigned long arg = 1; |
|
|
990 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
991 | #else |
|
|
992 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
993 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
994 | #endif |
|
|
995 | } |
|
|
996 | |
|
|
997 | static void noinline |
|
|
998 | evpipe_init (EV_P) |
|
|
999 | { |
|
|
1000 | if (!ev_is_active (&pipeev)) |
|
|
1001 | { |
|
|
1002 | #if EV_USE_EVENTFD |
|
|
1003 | if ((evfd = eventfd (0, 0)) >= 0) |
|
|
1004 | { |
|
|
1005 | evpipe [0] = -1; |
|
|
1006 | fd_intern (evfd); |
|
|
1007 | ev_io_set (&pipeev, evfd, EV_READ); |
|
|
1008 | } |
|
|
1009 | else |
|
|
1010 | #endif |
|
|
1011 | { |
|
|
1012 | while (pipe (evpipe)) |
|
|
1013 | syserr ("(libev) error creating signal/async pipe"); |
|
|
1014 | |
|
|
1015 | fd_intern (evpipe [0]); |
|
|
1016 | fd_intern (evpipe [1]); |
|
|
1017 | ev_io_set (&pipeev, evpipe [0], EV_READ); |
|
|
1018 | } |
|
|
1019 | |
|
|
1020 | ev_io_start (EV_A_ &pipeev); |
|
|
1021 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
1022 | } |
|
|
1023 | } |
|
|
1024 | |
|
|
1025 | void inline_size |
|
|
1026 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
1027 | { |
|
|
1028 | if (!*flag) |
|
|
1029 | { |
|
|
1030 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
1031 | |
|
|
1032 | *flag = 1; |
|
|
1033 | |
|
|
1034 | #if EV_USE_EVENTFD |
|
|
1035 | if (evfd >= 0) |
|
|
1036 | { |
|
|
1037 | uint64_t counter = 1; |
|
|
1038 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
1039 | } |
|
|
1040 | else |
|
|
1041 | #endif |
|
|
1042 | write (evpipe [1], &old_errno, 1); |
|
|
1043 | |
|
|
1044 | errno = old_errno; |
|
|
1045 | } |
|
|
1046 | } |
|
|
1047 | |
355 | static void |
1048 | static void |
|
|
1049 | pipecb (EV_P_ ev_io *iow, int revents) |
|
|
1050 | { |
|
|
1051 | #if EV_USE_EVENTFD |
|
|
1052 | if (evfd >= 0) |
|
|
1053 | { |
|
|
1054 | uint64_t counter; |
|
|
1055 | read (evfd, &counter, sizeof (uint64_t)); |
|
|
1056 | } |
|
|
1057 | else |
|
|
1058 | #endif |
|
|
1059 | { |
|
|
1060 | char dummy; |
|
|
1061 | read (evpipe [0], &dummy, 1); |
|
|
1062 | } |
|
|
1063 | |
|
|
1064 | if (gotsig && ev_is_default_loop (EV_A)) |
|
|
1065 | { |
|
|
1066 | int signum; |
|
|
1067 | gotsig = 0; |
|
|
1068 | |
|
|
1069 | for (signum = signalmax; signum--; ) |
|
|
1070 | if (signals [signum].gotsig) |
|
|
1071 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
1072 | } |
|
|
1073 | |
|
|
1074 | #if EV_ASYNC_ENABLE |
|
|
1075 | if (gotasync) |
|
|
1076 | { |
|
|
1077 | int i; |
|
|
1078 | gotasync = 0; |
|
|
1079 | |
|
|
1080 | for (i = asynccnt; i--; ) |
|
|
1081 | if (asyncs [i]->sent) |
|
|
1082 | { |
|
|
1083 | asyncs [i]->sent = 0; |
|
|
1084 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
1085 | } |
|
|
1086 | } |
|
|
1087 | #endif |
|
|
1088 | } |
|
|
1089 | |
|
|
1090 | /*****************************************************************************/ |
|
|
1091 | |
|
|
1092 | static void |
356 | sighandler (int signum) |
1093 | ev_sighandler (int signum) |
357 | { |
1094 | { |
|
|
1095 | #if EV_MULTIPLICITY |
|
|
1096 | struct ev_loop *loop = &default_loop_struct; |
|
|
1097 | #endif |
|
|
1098 | |
|
|
1099 | #if _WIN32 |
|
|
1100 | signal (signum, ev_sighandler); |
|
|
1101 | #endif |
|
|
1102 | |
358 | signals [signum - 1].gotsig = 1; |
1103 | signals [signum - 1].gotsig = 1; |
359 | |
1104 | evpipe_write (EV_A_ &gotsig); |
360 | if (!gotsig) |
|
|
361 | { |
|
|
362 | gotsig = 1; |
|
|
363 | write (sigpipe [1], &signum, 1); |
|
|
364 | } |
|
|
365 | } |
1105 | } |
366 | |
1106 | |
367 | static void |
1107 | void noinline |
368 | sigcb (struct ev_io *iow, int revents) |
1108 | ev_feed_signal_event (EV_P_ int signum) |
369 | { |
1109 | { |
370 | struct ev_signal *w; |
1110 | WL w; |
371 | int sig; |
|
|
372 | |
1111 | |
373 | read (sigpipe [0], &revents, 1); |
1112 | #if EV_MULTIPLICITY |
374 | gotsig = 0; |
1113 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1114 | #endif |
375 | |
1115 | |
376 | for (sig = signalmax; sig--; ) |
1116 | --signum; |
377 | if (signals [sig].gotsig) |
1117 | |
378 | { |
1118 | if (signum < 0 || signum >= signalmax) |
|
|
1119 | return; |
|
|
1120 | |
379 | signals [sig].gotsig = 0; |
1121 | signals [signum].gotsig = 0; |
380 | |
1122 | |
381 | for (w = signals [sig].head; w; w = w->next) |
1123 | for (w = signals [signum].head; w; w = w->next) |
382 | event ((W)w, EV_SIGNAL); |
1124 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
383 | } |
|
|
384 | } |
|
|
385 | |
|
|
386 | static void |
|
|
387 | siginit (void) |
|
|
388 | { |
|
|
389 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
|
|
390 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
391 | |
|
|
392 | /* rather than sort out wether we really need nb, set it */ |
|
|
393 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
|
|
394 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
395 | |
|
|
396 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
397 | ev_io_start (&sigev); |
|
|
398 | } |
1125 | } |
399 | |
1126 | |
400 | /*****************************************************************************/ |
1127 | /*****************************************************************************/ |
401 | |
1128 | |
402 | static struct ev_idle **idles; |
1129 | static WL childs [EV_PID_HASHSIZE]; |
403 | static int idlemax, idlecnt; |
|
|
404 | |
1130 | |
405 | static struct ev_prepare **prepares; |
1131 | #ifndef _WIN32 |
406 | static int preparemax, preparecnt; |
|
|
407 | |
1132 | |
408 | static struct ev_check **checks; |
|
|
409 | static int checkmax, checkcnt; |
|
|
410 | |
|
|
411 | /*****************************************************************************/ |
|
|
412 | |
|
|
413 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
414 | static struct ev_signal childev; |
1133 | static ev_signal childev; |
|
|
1134 | |
|
|
1135 | #ifndef WIFCONTINUED |
|
|
1136 | # define WIFCONTINUED(status) 0 |
|
|
1137 | #endif |
|
|
1138 | |
|
|
1139 | void inline_speed |
|
|
1140 | child_reap (EV_P_ int chain, int pid, int status) |
|
|
1141 | { |
|
|
1142 | ev_child *w; |
|
|
1143 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
|
|
1144 | |
|
|
1145 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1146 | { |
|
|
1147 | if ((w->pid == pid || !w->pid) |
|
|
1148 | && (!traced || (w->flags & 1))) |
|
|
1149 | { |
|
|
1150 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
|
|
1151 | w->rpid = pid; |
|
|
1152 | w->rstatus = status; |
|
|
1153 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
1154 | } |
|
|
1155 | } |
|
|
1156 | } |
415 | |
1157 | |
416 | #ifndef WCONTINUED |
1158 | #ifndef WCONTINUED |
417 | # define WCONTINUED 0 |
1159 | # define WCONTINUED 0 |
418 | #endif |
1160 | #endif |
419 | |
1161 | |
420 | static void |
1162 | static void |
421 | childcb (struct ev_signal *sw, int revents) |
1163 | childcb (EV_P_ ev_signal *sw, int revents) |
422 | { |
1164 | { |
423 | struct ev_child *w; |
|
|
424 | int pid, status; |
1165 | int pid, status; |
425 | |
1166 | |
|
|
1167 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
426 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
1168 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
427 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
1169 | if (!WCONTINUED |
428 | if (w->pid == pid || w->pid == -1) |
1170 | || errno != EINVAL |
429 | { |
1171 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
430 | w->status = status; |
1172 | return; |
431 | event ((W)w, EV_CHILD); |
1173 | |
432 | } |
1174 | /* make sure we are called again until all children have been reaped */ |
|
|
1175 | /* we need to do it this way so that the callback gets called before we continue */ |
|
|
1176 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
1177 | |
|
|
1178 | child_reap (EV_A_ pid, pid, status); |
|
|
1179 | if (EV_PID_HASHSIZE > 1) |
|
|
1180 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
433 | } |
1181 | } |
|
|
1182 | |
|
|
1183 | #endif |
434 | |
1184 | |
435 | /*****************************************************************************/ |
1185 | /*****************************************************************************/ |
436 | |
1186 | |
|
|
1187 | #if EV_USE_PORT |
|
|
1188 | # include "ev_port.c" |
|
|
1189 | #endif |
|
|
1190 | #if EV_USE_KQUEUE |
|
|
1191 | # include "ev_kqueue.c" |
|
|
1192 | #endif |
437 | #if EV_USE_EPOLL |
1193 | #if EV_USE_EPOLL |
438 | # include "ev_epoll.c" |
1194 | # include "ev_epoll.c" |
439 | #endif |
1195 | #endif |
|
|
1196 | #if EV_USE_POLL |
|
|
1197 | # include "ev_poll.c" |
|
|
1198 | #endif |
440 | #if EV_USE_SELECT |
1199 | #if EV_USE_SELECT |
441 | # include "ev_select.c" |
1200 | # include "ev_select.c" |
442 | #endif |
1201 | #endif |
443 | |
1202 | |
444 | int |
1203 | int |
… | |
… | |
451 | ev_version_minor (void) |
1210 | ev_version_minor (void) |
452 | { |
1211 | { |
453 | return EV_VERSION_MINOR; |
1212 | return EV_VERSION_MINOR; |
454 | } |
1213 | } |
455 | |
1214 | |
456 | int ev_init (int flags) |
1215 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
1216 | int inline_size |
|
|
1217 | enable_secure (void) |
457 | { |
1218 | { |
458 | if (!ev_method) |
1219 | #ifdef _WIN32 |
|
|
1220 | return 0; |
|
|
1221 | #else |
|
|
1222 | return getuid () != geteuid () |
|
|
1223 | || getgid () != getegid (); |
|
|
1224 | #endif |
|
|
1225 | } |
|
|
1226 | |
|
|
1227 | unsigned int |
|
|
1228 | ev_supported_backends (void) |
|
|
1229 | { |
|
|
1230 | unsigned int flags = 0; |
|
|
1231 | |
|
|
1232 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
1233 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
1234 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
1235 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
1236 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
1237 | |
|
|
1238 | return flags; |
|
|
1239 | } |
|
|
1240 | |
|
|
1241 | unsigned int |
|
|
1242 | ev_recommended_backends (void) |
|
|
1243 | { |
|
|
1244 | unsigned int flags = ev_supported_backends (); |
|
|
1245 | |
|
|
1246 | #ifndef __NetBSD__ |
|
|
1247 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
1248 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
1249 | flags &= ~EVBACKEND_KQUEUE; |
|
|
1250 | #endif |
|
|
1251 | #ifdef __APPLE__ |
|
|
1252 | // flags &= ~EVBACKEND_KQUEUE; for documentation |
|
|
1253 | flags &= ~EVBACKEND_POLL; |
|
|
1254 | #endif |
|
|
1255 | |
|
|
1256 | return flags; |
|
|
1257 | } |
|
|
1258 | |
|
|
1259 | unsigned int |
|
|
1260 | ev_embeddable_backends (void) |
|
|
1261 | { |
|
|
1262 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
|
|
1263 | |
|
|
1264 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
1265 | /* please fix it and tell me how to detect the fix */ |
|
|
1266 | flags &= ~EVBACKEND_EPOLL; |
|
|
1267 | |
|
|
1268 | return flags; |
|
|
1269 | } |
|
|
1270 | |
|
|
1271 | unsigned int |
|
|
1272 | ev_backend (EV_P) |
|
|
1273 | { |
|
|
1274 | return backend; |
|
|
1275 | } |
|
|
1276 | |
|
|
1277 | unsigned int |
|
|
1278 | ev_loop_count (EV_P) |
|
|
1279 | { |
|
|
1280 | return loop_count; |
|
|
1281 | } |
|
|
1282 | |
|
|
1283 | void |
|
|
1284 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1285 | { |
|
|
1286 | io_blocktime = interval; |
|
|
1287 | } |
|
|
1288 | |
|
|
1289 | void |
|
|
1290 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1291 | { |
|
|
1292 | timeout_blocktime = interval; |
|
|
1293 | } |
|
|
1294 | |
|
|
1295 | static void noinline |
|
|
1296 | loop_init (EV_P_ unsigned int flags) |
|
|
1297 | { |
|
|
1298 | if (!backend) |
459 | { |
1299 | { |
460 | #if EV_USE_MONOTONIC |
1300 | #if EV_USE_MONOTONIC |
461 | { |
1301 | { |
462 | struct timespec ts; |
1302 | struct timespec ts; |
463 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1303 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
464 | have_monotonic = 1; |
1304 | have_monotonic = 1; |
465 | } |
1305 | } |
466 | #endif |
1306 | #endif |
467 | |
1307 | |
468 | ev_now = ev_time (); |
1308 | ev_rt_now = ev_time (); |
469 | now = get_clock (); |
1309 | mn_now = get_clock (); |
|
|
1310 | now_floor = mn_now; |
470 | diff = ev_now - now; |
1311 | rtmn_diff = ev_rt_now - mn_now; |
471 | |
1312 | |
472 | if (pipe (sigpipe)) |
1313 | io_blocktime = 0.; |
473 | return 0; |
1314 | timeout_blocktime = 0.; |
|
|
1315 | backend = 0; |
|
|
1316 | backend_fd = -1; |
|
|
1317 | gotasync = 0; |
|
|
1318 | #if EV_USE_INOTIFY |
|
|
1319 | fs_fd = -2; |
|
|
1320 | #endif |
474 | |
1321 | |
475 | ev_method = EVMETHOD_NONE; |
1322 | /* pid check not overridable via env */ |
|
|
1323 | #ifndef _WIN32 |
|
|
1324 | if (flags & EVFLAG_FORKCHECK) |
|
|
1325 | curpid = getpid (); |
|
|
1326 | #endif |
|
|
1327 | |
|
|
1328 | if (!(flags & EVFLAG_NOENV) |
|
|
1329 | && !enable_secure () |
|
|
1330 | && getenv ("LIBEV_FLAGS")) |
|
|
1331 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
1332 | |
|
|
1333 | if (!(flags & 0x0000ffffU)) |
|
|
1334 | flags |= ev_recommended_backends (); |
|
|
1335 | |
|
|
1336 | #if EV_USE_PORT |
|
|
1337 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
1338 | #endif |
|
|
1339 | #if EV_USE_KQUEUE |
|
|
1340 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
1341 | #endif |
476 | #if EV_USE_EPOLL |
1342 | #if EV_USE_EPOLL |
477 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
1343 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
|
|
1344 | #endif |
|
|
1345 | #if EV_USE_POLL |
|
|
1346 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
478 | #endif |
1347 | #endif |
479 | #if EV_USE_SELECT |
1348 | #if EV_USE_SELECT |
480 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
1349 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
481 | #endif |
1350 | #endif |
482 | |
1351 | |
483 | if (ev_method) |
1352 | ev_init (&pipeev, pipecb); |
|
|
1353 | ev_set_priority (&pipeev, EV_MAXPRI); |
|
|
1354 | } |
|
|
1355 | } |
|
|
1356 | |
|
|
1357 | static void noinline |
|
|
1358 | loop_destroy (EV_P) |
|
|
1359 | { |
|
|
1360 | int i; |
|
|
1361 | |
|
|
1362 | if (ev_is_active (&pipeev)) |
|
|
1363 | { |
|
|
1364 | ev_ref (EV_A); /* signal watcher */ |
|
|
1365 | ev_io_stop (EV_A_ &pipeev); |
|
|
1366 | |
|
|
1367 | #if EV_USE_EVENTFD |
|
|
1368 | if (evfd >= 0) |
|
|
1369 | close (evfd); |
|
|
1370 | #endif |
|
|
1371 | |
|
|
1372 | if (evpipe [0] >= 0) |
484 | { |
1373 | { |
485 | ev_watcher_init (&sigev, sigcb); |
1374 | close (evpipe [0]); |
486 | siginit (); |
1375 | close (evpipe [1]); |
|
|
1376 | } |
|
|
1377 | } |
487 | |
1378 | |
|
|
1379 | #if EV_USE_INOTIFY |
|
|
1380 | if (fs_fd >= 0) |
|
|
1381 | close (fs_fd); |
|
|
1382 | #endif |
|
|
1383 | |
|
|
1384 | if (backend_fd >= 0) |
|
|
1385 | close (backend_fd); |
|
|
1386 | |
|
|
1387 | #if EV_USE_PORT |
|
|
1388 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
1389 | #endif |
|
|
1390 | #if EV_USE_KQUEUE |
|
|
1391 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
1392 | #endif |
|
|
1393 | #if EV_USE_EPOLL |
|
|
1394 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
1395 | #endif |
|
|
1396 | #if EV_USE_POLL |
|
|
1397 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
1398 | #endif |
|
|
1399 | #if EV_USE_SELECT |
|
|
1400 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
1401 | #endif |
|
|
1402 | |
|
|
1403 | for (i = NUMPRI; i--; ) |
|
|
1404 | { |
|
|
1405 | array_free (pending, [i]); |
|
|
1406 | #if EV_IDLE_ENABLE |
|
|
1407 | array_free (idle, [i]); |
|
|
1408 | #endif |
|
|
1409 | } |
|
|
1410 | |
|
|
1411 | ev_free (anfds); anfdmax = 0; |
|
|
1412 | |
|
|
1413 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
1414 | array_free (fdchange, EMPTY); |
|
|
1415 | array_free (timer, EMPTY); |
|
|
1416 | #if EV_PERIODIC_ENABLE |
|
|
1417 | array_free (periodic, EMPTY); |
|
|
1418 | #endif |
|
|
1419 | #if EV_FORK_ENABLE |
|
|
1420 | array_free (fork, EMPTY); |
|
|
1421 | #endif |
|
|
1422 | array_free (prepare, EMPTY); |
|
|
1423 | array_free (check, EMPTY); |
|
|
1424 | #if EV_ASYNC_ENABLE |
|
|
1425 | array_free (async, EMPTY); |
|
|
1426 | #endif |
|
|
1427 | |
|
|
1428 | backend = 0; |
|
|
1429 | } |
|
|
1430 | |
|
|
1431 | #if EV_USE_INOTIFY |
|
|
1432 | void inline_size infy_fork (EV_P); |
|
|
1433 | #endif |
|
|
1434 | |
|
|
1435 | void inline_size |
|
|
1436 | loop_fork (EV_P) |
|
|
1437 | { |
|
|
1438 | #if EV_USE_PORT |
|
|
1439 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
1440 | #endif |
|
|
1441 | #if EV_USE_KQUEUE |
|
|
1442 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
1443 | #endif |
|
|
1444 | #if EV_USE_EPOLL |
|
|
1445 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
1446 | #endif |
|
|
1447 | #if EV_USE_INOTIFY |
|
|
1448 | infy_fork (EV_A); |
|
|
1449 | #endif |
|
|
1450 | |
|
|
1451 | if (ev_is_active (&pipeev)) |
|
|
1452 | { |
|
|
1453 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1454 | /* while we modify the fd vars */ |
|
|
1455 | gotsig = 1; |
|
|
1456 | #if EV_ASYNC_ENABLE |
|
|
1457 | gotasync = 1; |
|
|
1458 | #endif |
|
|
1459 | |
|
|
1460 | ev_ref (EV_A); |
|
|
1461 | ev_io_stop (EV_A_ &pipeev); |
|
|
1462 | |
|
|
1463 | #if EV_USE_EVENTFD |
|
|
1464 | if (evfd >= 0) |
|
|
1465 | close (evfd); |
|
|
1466 | #endif |
|
|
1467 | |
|
|
1468 | if (evpipe [0] >= 0) |
|
|
1469 | { |
|
|
1470 | close (evpipe [0]); |
|
|
1471 | close (evpipe [1]); |
|
|
1472 | } |
|
|
1473 | |
|
|
1474 | evpipe_init (EV_A); |
|
|
1475 | /* now iterate over everything, in case we missed something */ |
|
|
1476 | pipecb (EV_A_ &pipeev, EV_READ); |
|
|
1477 | } |
|
|
1478 | |
|
|
1479 | postfork = 0; |
|
|
1480 | } |
|
|
1481 | |
|
|
1482 | #if EV_MULTIPLICITY |
|
|
1483 | |
|
|
1484 | struct ev_loop * |
|
|
1485 | ev_loop_new (unsigned int flags) |
|
|
1486 | { |
|
|
1487 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
1488 | |
|
|
1489 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
1490 | |
|
|
1491 | loop_init (EV_A_ flags); |
|
|
1492 | |
|
|
1493 | if (ev_backend (EV_A)) |
|
|
1494 | return loop; |
|
|
1495 | |
|
|
1496 | return 0; |
|
|
1497 | } |
|
|
1498 | |
|
|
1499 | void |
|
|
1500 | ev_loop_destroy (EV_P) |
|
|
1501 | { |
|
|
1502 | loop_destroy (EV_A); |
|
|
1503 | ev_free (loop); |
|
|
1504 | } |
|
|
1505 | |
|
|
1506 | void |
|
|
1507 | ev_loop_fork (EV_P) |
|
|
1508 | { |
|
|
1509 | postfork = 1; /* must be in line with ev_default_fork */ |
|
|
1510 | } |
|
|
1511 | |
|
|
1512 | #if EV_VERIFY |
|
|
1513 | void noinline |
|
|
1514 | verify_watcher (EV_P_ W w) |
|
|
1515 | { |
|
|
1516 | assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
|
|
1517 | |
|
|
1518 | if (w->pending) |
|
|
1519 | assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
|
|
1520 | } |
|
|
1521 | |
|
|
1522 | static void noinline |
|
|
1523 | verify_heap (EV_P_ ANHE *heap, int N) |
|
|
1524 | { |
|
|
1525 | int i; |
|
|
1526 | |
|
|
1527 | for (i = HEAP0; i < N + HEAP0; ++i) |
|
|
1528 | { |
|
|
1529 | assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); |
|
|
1530 | assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); |
|
|
1531 | assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); |
|
|
1532 | |
|
|
1533 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
|
|
1534 | } |
|
|
1535 | } |
|
|
1536 | |
|
|
1537 | static void noinline |
|
|
1538 | array_verify (EV_P_ W *ws, int cnt) |
|
|
1539 | { |
|
|
1540 | while (cnt--) |
|
|
1541 | { |
|
|
1542 | assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
|
|
1543 | verify_watcher (EV_A_ ws [cnt]); |
|
|
1544 | } |
|
|
1545 | } |
|
|
1546 | #endif |
|
|
1547 | |
|
|
1548 | void |
|
|
1549 | ev_loop_verify (EV_P) |
|
|
1550 | { |
|
|
1551 | #if EV_VERIFY |
|
|
1552 | int i; |
|
|
1553 | WL w; |
|
|
1554 | |
|
|
1555 | assert (activecnt >= -1); |
|
|
1556 | |
|
|
1557 | assert (fdchangemax >= fdchangecnt); |
|
|
1558 | for (i = 0; i < fdchangecnt; ++i) |
|
|
1559 | assert (("negative fd in fdchanges", fdchanges [i] >= 0)); |
|
|
1560 | |
|
|
1561 | assert (anfdmax >= 0); |
|
|
1562 | for (i = 0; i < anfdmax; ++i) |
|
|
1563 | for (w = anfds [i].head; w; w = w->next) |
|
|
1564 | { |
|
|
1565 | verify_watcher (EV_A_ (W)w); |
|
|
1566 | assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); |
|
|
1567 | assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
|
|
1568 | } |
|
|
1569 | |
|
|
1570 | assert (timermax >= timercnt); |
|
|
1571 | verify_heap (EV_A_ timers, timercnt); |
|
|
1572 | |
|
|
1573 | #if EV_PERIODIC_ENABLE |
|
|
1574 | assert (periodicmax >= periodiccnt); |
|
|
1575 | verify_heap (EV_A_ periodics, periodiccnt); |
|
|
1576 | #endif |
|
|
1577 | |
|
|
1578 | for (i = NUMPRI; i--; ) |
|
|
1579 | { |
|
|
1580 | assert (pendingmax [i] >= pendingcnt [i]); |
|
|
1581 | #if EV_IDLE_ENABLE |
|
|
1582 | assert (idleall >= 0); |
|
|
1583 | assert (idlemax [i] >= idlecnt [i]); |
|
|
1584 | array_verify (EV_A_ (W *)idles [i], idlecnt [i]); |
|
|
1585 | #endif |
|
|
1586 | } |
|
|
1587 | |
|
|
1588 | #if EV_FORK_ENABLE |
|
|
1589 | assert (forkmax >= forkcnt); |
|
|
1590 | array_verify (EV_A_ (W *)forks, forkcnt); |
|
|
1591 | #endif |
|
|
1592 | |
|
|
1593 | #if EV_ASYNC_ENABLE |
|
|
1594 | assert (asyncmax >= asynccnt); |
|
|
1595 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
|
|
1596 | #endif |
|
|
1597 | |
|
|
1598 | assert (preparemax >= preparecnt); |
|
|
1599 | array_verify (EV_A_ (W *)prepares, preparecnt); |
|
|
1600 | |
|
|
1601 | assert (checkmax >= checkcnt); |
|
|
1602 | array_verify (EV_A_ (W *)checks, checkcnt); |
|
|
1603 | |
|
|
1604 | # if 0 |
|
|
1605 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1606 | for (signum = signalmax; signum--; ) if (signals [signum].gotsig) |
|
|
1607 | # endif |
|
|
1608 | #endif |
|
|
1609 | } |
|
|
1610 | |
|
|
1611 | #endif /* multiplicity */ |
|
|
1612 | |
|
|
1613 | #if EV_MULTIPLICITY |
|
|
1614 | struct ev_loop * |
|
|
1615 | ev_default_loop_init (unsigned int flags) |
|
|
1616 | #else |
|
|
1617 | int |
|
|
1618 | ev_default_loop (unsigned int flags) |
|
|
1619 | #endif |
|
|
1620 | { |
|
|
1621 | if (!ev_default_loop_ptr) |
|
|
1622 | { |
|
|
1623 | #if EV_MULTIPLICITY |
|
|
1624 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
|
|
1625 | #else |
|
|
1626 | ev_default_loop_ptr = 1; |
|
|
1627 | #endif |
|
|
1628 | |
|
|
1629 | loop_init (EV_A_ flags); |
|
|
1630 | |
|
|
1631 | if (ev_backend (EV_A)) |
|
|
1632 | { |
|
|
1633 | #ifndef _WIN32 |
488 | ev_signal_init (&childev, childcb, SIGCHLD); |
1634 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
1635 | ev_set_priority (&childev, EV_MAXPRI); |
489 | ev_signal_start (&childev); |
1636 | ev_signal_start (EV_A_ &childev); |
|
|
1637 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
1638 | #endif |
490 | } |
1639 | } |
|
|
1640 | else |
|
|
1641 | ev_default_loop_ptr = 0; |
491 | } |
1642 | } |
492 | |
1643 | |
493 | return ev_method; |
1644 | return ev_default_loop_ptr; |
|
|
1645 | } |
|
|
1646 | |
|
|
1647 | void |
|
|
1648 | ev_default_destroy (void) |
|
|
1649 | { |
|
|
1650 | #if EV_MULTIPLICITY |
|
|
1651 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1652 | #endif |
|
|
1653 | |
|
|
1654 | #ifndef _WIN32 |
|
|
1655 | ev_ref (EV_A); /* child watcher */ |
|
|
1656 | ev_signal_stop (EV_A_ &childev); |
|
|
1657 | #endif |
|
|
1658 | |
|
|
1659 | loop_destroy (EV_A); |
|
|
1660 | } |
|
|
1661 | |
|
|
1662 | void |
|
|
1663 | ev_default_fork (void) |
|
|
1664 | { |
|
|
1665 | #if EV_MULTIPLICITY |
|
|
1666 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1667 | #endif |
|
|
1668 | |
|
|
1669 | if (backend) |
|
|
1670 | postfork = 1; /* must be in line with ev_loop_fork */ |
494 | } |
1671 | } |
495 | |
1672 | |
496 | /*****************************************************************************/ |
1673 | /*****************************************************************************/ |
497 | |
1674 | |
498 | void |
1675 | void |
499 | ev_fork_prepare (void) |
1676 | ev_invoke (EV_P_ void *w, int revents) |
500 | { |
1677 | { |
501 | /* nop */ |
1678 | EV_CB_INVOKE ((W)w, revents); |
502 | } |
1679 | } |
503 | |
1680 | |
504 | void |
1681 | void inline_speed |
505 | ev_fork_parent (void) |
|
|
506 | { |
|
|
507 | /* nop */ |
|
|
508 | } |
|
|
509 | |
|
|
510 | void |
|
|
511 | ev_fork_child (void) |
|
|
512 | { |
|
|
513 | #if EV_USE_EPOLL |
|
|
514 | if (ev_method == EVMETHOD_EPOLL) |
|
|
515 | epoll_postfork_child (); |
|
|
516 | #endif |
|
|
517 | |
|
|
518 | ev_io_stop (&sigev); |
|
|
519 | close (sigpipe [0]); |
|
|
520 | close (sigpipe [1]); |
|
|
521 | pipe (sigpipe); |
|
|
522 | siginit (); |
|
|
523 | } |
|
|
524 | |
|
|
525 | /*****************************************************************************/ |
|
|
526 | |
|
|
527 | static void |
|
|
528 | call_pending (void) |
1682 | call_pending (EV_P) |
529 | { |
1683 | { |
|
|
1684 | int pri; |
|
|
1685 | |
|
|
1686 | for (pri = NUMPRI; pri--; ) |
530 | while (pendingcnt) |
1687 | while (pendingcnt [pri]) |
531 | { |
1688 | { |
532 | ANPENDING *p = pendings + --pendingcnt; |
1689 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
533 | |
1690 | |
534 | if (p->w) |
1691 | if (expect_true (p->w)) |
|
|
1692 | { |
|
|
1693 | /*assert (("non-pending watcher on pending list", p->w->pending));*/ |
|
|
1694 | |
|
|
1695 | p->w->pending = 0; |
|
|
1696 | EV_CB_INVOKE (p->w, p->events); |
|
|
1697 | EV_FREQUENT_CHECK; |
|
|
1698 | } |
|
|
1699 | } |
|
|
1700 | } |
|
|
1701 | |
|
|
1702 | #if EV_IDLE_ENABLE |
|
|
1703 | void inline_size |
|
|
1704 | idle_reify (EV_P) |
|
|
1705 | { |
|
|
1706 | if (expect_false (idleall)) |
|
|
1707 | { |
|
|
1708 | int pri; |
|
|
1709 | |
|
|
1710 | for (pri = NUMPRI; pri--; ) |
535 | { |
1711 | { |
536 | p->w->pending = 0; |
1712 | if (pendingcnt [pri]) |
537 | p->w->cb (p->w, p->events); |
1713 | break; |
|
|
1714 | |
|
|
1715 | if (idlecnt [pri]) |
|
|
1716 | { |
|
|
1717 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
|
|
1718 | break; |
|
|
1719 | } |
538 | } |
1720 | } |
539 | } |
1721 | } |
540 | } |
1722 | } |
|
|
1723 | #endif |
541 | |
1724 | |
542 | static void |
1725 | void inline_size |
543 | timers_reify (void) |
1726 | timers_reify (EV_P) |
544 | { |
1727 | { |
|
|
1728 | EV_FREQUENT_CHECK; |
|
|
1729 | |
545 | while (timercnt && timers [0]->at <= now) |
1730 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
546 | { |
1731 | { |
547 | struct ev_timer *w = timers [0]; |
1732 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
|
|
1733 | |
|
|
1734 | /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ |
548 | |
1735 | |
549 | /* first reschedule or stop timer */ |
1736 | /* first reschedule or stop timer */ |
550 | if (w->repeat) |
1737 | if (w->repeat) |
551 | { |
1738 | { |
|
|
1739 | ev_at (w) += w->repeat; |
|
|
1740 | if (ev_at (w) < mn_now) |
|
|
1741 | ev_at (w) = mn_now; |
|
|
1742 | |
552 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
1743 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
553 | w->at = now + w->repeat; |
1744 | |
|
|
1745 | ANHE_at_cache (timers [HEAP0]); |
554 | downheap ((WT *)timers, timercnt, 0); |
1746 | downheap (timers, timercnt, HEAP0); |
555 | } |
1747 | } |
556 | else |
1748 | else |
557 | ev_timer_stop (w); /* nonrepeating: stop timer */ |
1749 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
558 | |
1750 | |
|
|
1751 | EV_FREQUENT_CHECK; |
559 | event ((W)w, EV_TIMEOUT); |
1752 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
560 | } |
1753 | } |
561 | } |
1754 | } |
562 | |
1755 | |
563 | static void |
1756 | #if EV_PERIODIC_ENABLE |
|
|
1757 | void inline_size |
564 | periodics_reify (void) |
1758 | periodics_reify (EV_P) |
565 | { |
1759 | { |
|
|
1760 | EV_FREQUENT_CHECK; |
|
|
1761 | |
566 | while (periodiccnt && periodics [0]->at <= ev_now) |
1762 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
567 | { |
1763 | { |
568 | struct ev_periodic *w = periodics [0]; |
1764 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
|
|
1765 | |
|
|
1766 | /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ |
569 | |
1767 | |
570 | /* first reschedule or stop timer */ |
1768 | /* first reschedule or stop timer */ |
571 | if (w->interval) |
1769 | if (w->reschedule_cb) |
572 | { |
1770 | { |
573 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
1771 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
574 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now)); |
1772 | |
|
|
1773 | assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
|
|
1774 | |
|
|
1775 | ANHE_at_cache (periodics [HEAP0]); |
575 | downheap ((WT *)periodics, periodiccnt, 0); |
1776 | downheap (periodics, periodiccnt, HEAP0); |
|
|
1777 | } |
|
|
1778 | else if (w->interval) |
|
|
1779 | { |
|
|
1780 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1781 | /* if next trigger time is not sufficiently in the future, put it there */ |
|
|
1782 | /* this might happen because of floating point inexactness */ |
|
|
1783 | if (ev_at (w) - ev_rt_now < TIME_EPSILON) |
|
|
1784 | { |
|
|
1785 | ev_at (w) += w->interval; |
|
|
1786 | |
|
|
1787 | /* if interval is unreasonably low we might still have a time in the past */ |
|
|
1788 | /* so correct this. this will make the periodic very inexact, but the user */ |
|
|
1789 | /* has effectively asked to get triggered more often than possible */ |
|
|
1790 | if (ev_at (w) < ev_rt_now) |
|
|
1791 | ev_at (w) = ev_rt_now; |
|
|
1792 | } |
|
|
1793 | |
|
|
1794 | ANHE_at_cache (periodics [HEAP0]); |
|
|
1795 | downheap (periodics, periodiccnt, HEAP0); |
576 | } |
1796 | } |
577 | else |
1797 | else |
578 | ev_periodic_stop (w); /* nonrepeating: stop timer */ |
1798 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
579 | |
1799 | |
|
|
1800 | EV_FREQUENT_CHECK; |
580 | event ((W)w, EV_PERIODIC); |
1801 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
581 | } |
1802 | } |
582 | } |
1803 | } |
583 | |
1804 | |
584 | static void |
1805 | static void noinline |
585 | periodics_reschedule (ev_tstamp diff) |
1806 | periodics_reschedule (EV_P) |
586 | { |
1807 | { |
587 | int i; |
1808 | int i; |
588 | |
1809 | |
589 | /* adjust periodics after time jump */ |
1810 | /* adjust periodics after time jump */ |
590 | for (i = 0; i < periodiccnt; ++i) |
1811 | for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
591 | { |
1812 | { |
592 | struct ev_periodic *w = periodics [i]; |
1813 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
593 | |
1814 | |
|
|
1815 | if (w->reschedule_cb) |
|
|
1816 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
594 | if (w->interval) |
1817 | else if (w->interval) |
|
|
1818 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1819 | |
|
|
1820 | ANHE_at_cache (periodics [i]); |
|
|
1821 | } |
|
|
1822 | |
|
|
1823 | reheap (periodics, periodiccnt); |
|
|
1824 | } |
|
|
1825 | #endif |
|
|
1826 | |
|
|
1827 | void inline_speed |
|
|
1828 | time_update (EV_P_ ev_tstamp max_block) |
|
|
1829 | { |
|
|
1830 | int i; |
|
|
1831 | |
|
|
1832 | #if EV_USE_MONOTONIC |
|
|
1833 | if (expect_true (have_monotonic)) |
|
|
1834 | { |
|
|
1835 | ev_tstamp odiff = rtmn_diff; |
|
|
1836 | |
|
|
1837 | mn_now = get_clock (); |
|
|
1838 | |
|
|
1839 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
1840 | /* interpolate in the meantime */ |
|
|
1841 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
595 | { |
1842 | { |
596 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
1843 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1844 | return; |
|
|
1845 | } |
597 | |
1846 | |
598 | if (fabs (diff) >= 1e-4) |
1847 | now_floor = mn_now; |
|
|
1848 | ev_rt_now = ev_time (); |
|
|
1849 | |
|
|
1850 | /* loop a few times, before making important decisions. |
|
|
1851 | * on the choice of "4": one iteration isn't enough, |
|
|
1852 | * in case we get preempted during the calls to |
|
|
1853 | * ev_time and get_clock. a second call is almost guaranteed |
|
|
1854 | * to succeed in that case, though. and looping a few more times |
|
|
1855 | * doesn't hurt either as we only do this on time-jumps or |
|
|
1856 | * in the unlikely event of having been preempted here. |
|
|
1857 | */ |
|
|
1858 | for (i = 4; --i; ) |
|
|
1859 | { |
|
|
1860 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1861 | |
|
|
1862 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
|
|
1863 | return; /* all is well */ |
|
|
1864 | |
|
|
1865 | ev_rt_now = ev_time (); |
|
|
1866 | mn_now = get_clock (); |
|
|
1867 | now_floor = mn_now; |
|
|
1868 | } |
|
|
1869 | |
|
|
1870 | # if EV_PERIODIC_ENABLE |
|
|
1871 | periodics_reschedule (EV_A); |
|
|
1872 | # endif |
|
|
1873 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1874 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
1875 | } |
|
|
1876 | else |
|
|
1877 | #endif |
|
|
1878 | { |
|
|
1879 | ev_rt_now = ev_time (); |
|
|
1880 | |
|
|
1881 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
|
|
1882 | { |
|
|
1883 | #if EV_PERIODIC_ENABLE |
|
|
1884 | periodics_reschedule (EV_A); |
|
|
1885 | #endif |
|
|
1886 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
|
|
1887 | for (i = 0; i < timercnt; ++i) |
599 | { |
1888 | { |
600 | ev_periodic_stop (w); |
1889 | ANHE *he = timers + i + HEAP0; |
601 | ev_periodic_start (w); |
1890 | ANHE_w (*he)->at += ev_rt_now - mn_now; |
602 | |
1891 | ANHE_at_cache (*he); |
603 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
|
|
604 | } |
1892 | } |
605 | } |
1893 | } |
606 | } |
|
|
607 | } |
|
|
608 | |
1894 | |
609 | static void |
1895 | mn_now = ev_rt_now; |
610 | time_update (void) |
|
|
611 | { |
|
|
612 | int i; |
|
|
613 | |
|
|
614 | ev_now = ev_time (); |
|
|
615 | |
|
|
616 | if (have_monotonic) |
|
|
617 | { |
1896 | } |
618 | ev_tstamp odiff = diff; |
1897 | } |
619 | |
1898 | |
620 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
1899 | void |
|
|
1900 | ev_ref (EV_P) |
|
|
1901 | { |
|
|
1902 | ++activecnt; |
|
|
1903 | } |
|
|
1904 | |
|
|
1905 | void |
|
|
1906 | ev_unref (EV_P) |
|
|
1907 | { |
|
|
1908 | --activecnt; |
|
|
1909 | } |
|
|
1910 | |
|
|
1911 | static int loop_done; |
|
|
1912 | |
|
|
1913 | void |
|
|
1914 | ev_loop (EV_P_ int flags) |
|
|
1915 | { |
|
|
1916 | loop_done = EVUNLOOP_CANCEL; |
|
|
1917 | |
|
|
1918 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
|
|
1919 | |
|
|
1920 | do |
|
|
1921 | { |
|
|
1922 | #if EV_VERIFY >= 2 |
|
|
1923 | ev_loop_verify (EV_A); |
|
|
1924 | #endif |
|
|
1925 | |
|
|
1926 | #ifndef _WIN32 |
|
|
1927 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
1928 | if (expect_false (getpid () != curpid)) |
|
|
1929 | { |
|
|
1930 | curpid = getpid (); |
|
|
1931 | postfork = 1; |
|
|
1932 | } |
|
|
1933 | #endif |
|
|
1934 | |
|
|
1935 | #if EV_FORK_ENABLE |
|
|
1936 | /* we might have forked, so queue fork handlers */ |
|
|
1937 | if (expect_false (postfork)) |
|
|
1938 | if (forkcnt) |
|
|
1939 | { |
|
|
1940 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
1941 | call_pending (EV_A); |
|
|
1942 | } |
|
|
1943 | #endif |
|
|
1944 | |
|
|
1945 | /* queue prepare watchers (and execute them) */ |
|
|
1946 | if (expect_false (preparecnt)) |
621 | { |
1947 | { |
622 | now = get_clock (); |
1948 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
623 | diff = ev_now - now; |
1949 | call_pending (EV_A); |
624 | |
|
|
625 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
|
|
626 | return; /* all is well */ |
|
|
627 | |
|
|
628 | ev_now = ev_time (); |
|
|
629 | } |
1950 | } |
630 | |
1951 | |
631 | periodics_reschedule (diff - odiff); |
1952 | if (expect_false (!activecnt)) |
632 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
1953 | break; |
633 | } |
|
|
634 | else |
|
|
635 | { |
|
|
636 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
|
|
637 | { |
|
|
638 | periodics_reschedule (ev_now - now); |
|
|
639 | |
1954 | |
640 | /* adjust timers. this is easy, as the offset is the same for all */ |
1955 | /* we might have forked, so reify kernel state if necessary */ |
641 | for (i = 0; i < timercnt; ++i) |
1956 | if (expect_false (postfork)) |
642 | timers [i]->at += diff; |
1957 | loop_fork (EV_A); |
643 | } |
|
|
644 | |
|
|
645 | now = ev_now; |
|
|
646 | } |
|
|
647 | } |
|
|
648 | |
|
|
649 | int ev_loop_done; |
|
|
650 | |
|
|
651 | void ev_loop (int flags) |
|
|
652 | { |
|
|
653 | double block; |
|
|
654 | ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
|
|
655 | |
|
|
656 | do |
|
|
657 | { |
|
|
658 | /* queue check watchers (and execute them) */ |
|
|
659 | if (preparecnt) |
|
|
660 | { |
|
|
661 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
|
|
662 | call_pending (); |
|
|
663 | } |
|
|
664 | |
1958 | |
665 | /* update fd-related kernel structures */ |
1959 | /* update fd-related kernel structures */ |
666 | fd_reify (); |
1960 | fd_reify (EV_A); |
667 | |
1961 | |
668 | /* calculate blocking time */ |
1962 | /* calculate blocking time */ |
|
|
1963 | { |
|
|
1964 | ev_tstamp waittime = 0.; |
|
|
1965 | ev_tstamp sleeptime = 0.; |
669 | |
1966 | |
670 | /* we only need this for !monotonic clockor timers, but as we basically |
1967 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
671 | always have timers, we just calculate it always */ |
|
|
672 | ev_now = ev_time (); |
|
|
673 | |
|
|
674 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
|
|
675 | block = 0.; |
|
|
676 | else |
|
|
677 | { |
1968 | { |
|
|
1969 | /* update time to cancel out callback processing overhead */ |
|
|
1970 | time_update (EV_A_ 1e100); |
|
|
1971 | |
678 | block = MAX_BLOCKTIME; |
1972 | waittime = MAX_BLOCKTIME; |
679 | |
1973 | |
680 | if (timercnt) |
1974 | if (timercnt) |
681 | { |
1975 | { |
682 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
1976 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
683 | if (block > to) block = to; |
1977 | if (waittime > to) waittime = to; |
684 | } |
1978 | } |
685 | |
1979 | |
|
|
1980 | #if EV_PERIODIC_ENABLE |
686 | if (periodiccnt) |
1981 | if (periodiccnt) |
687 | { |
1982 | { |
688 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
1983 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
689 | if (block > to) block = to; |
1984 | if (waittime > to) waittime = to; |
690 | } |
1985 | } |
|
|
1986 | #endif |
691 | |
1987 | |
692 | if (block < 0.) block = 0.; |
1988 | if (expect_false (waittime < timeout_blocktime)) |
|
|
1989 | waittime = timeout_blocktime; |
|
|
1990 | |
|
|
1991 | sleeptime = waittime - backend_fudge; |
|
|
1992 | |
|
|
1993 | if (expect_true (sleeptime > io_blocktime)) |
|
|
1994 | sleeptime = io_blocktime; |
|
|
1995 | |
|
|
1996 | if (sleeptime) |
|
|
1997 | { |
|
|
1998 | ev_sleep (sleeptime); |
|
|
1999 | waittime -= sleeptime; |
|
|
2000 | } |
693 | } |
2001 | } |
694 | |
2002 | |
695 | method_poll (block); |
2003 | ++loop_count; |
|
|
2004 | backend_poll (EV_A_ waittime); |
696 | |
2005 | |
697 | /* update ev_now, do magic */ |
2006 | /* update ev_rt_now, do magic */ |
698 | time_update (); |
2007 | time_update (EV_A_ waittime + sleeptime); |
|
|
2008 | } |
699 | |
2009 | |
700 | /* queue pending timers and reschedule them */ |
2010 | /* queue pending timers and reschedule them */ |
701 | timers_reify (); /* relative timers called last */ |
2011 | timers_reify (EV_A); /* relative timers called last */ |
|
|
2012 | #if EV_PERIODIC_ENABLE |
702 | periodics_reify (); /* absolute timers called first */ |
2013 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
2014 | #endif |
703 | |
2015 | |
|
|
2016 | #if EV_IDLE_ENABLE |
704 | /* queue idle watchers unless io or timers are pending */ |
2017 | /* queue idle watchers unless other events are pending */ |
705 | if (!pendingcnt) |
2018 | idle_reify (EV_A); |
706 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
2019 | #endif |
707 | |
2020 | |
708 | /* queue check watchers, to be executed first */ |
2021 | /* queue check watchers, to be executed first */ |
709 | if (checkcnt) |
2022 | if (expect_false (checkcnt)) |
710 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
2023 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
711 | |
2024 | |
712 | call_pending (); |
2025 | call_pending (EV_A); |
713 | } |
2026 | } |
714 | while (!ev_loop_done); |
2027 | while (expect_true ( |
|
|
2028 | activecnt |
|
|
2029 | && !loop_done |
|
|
2030 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
|
|
2031 | )); |
715 | |
2032 | |
716 | if (ev_loop_done != 2) |
2033 | if (loop_done == EVUNLOOP_ONE) |
|
|
2034 | loop_done = EVUNLOOP_CANCEL; |
|
|
2035 | } |
|
|
2036 | |
|
|
2037 | void |
|
|
2038 | ev_unloop (EV_P_ int how) |
|
|
2039 | { |
717 | ev_loop_done = 0; |
2040 | loop_done = how; |
718 | } |
2041 | } |
719 | |
2042 | |
720 | /*****************************************************************************/ |
2043 | /*****************************************************************************/ |
721 | |
2044 | |
722 | static void |
2045 | void inline_size |
723 | wlist_add (WL *head, WL elem) |
2046 | wlist_add (WL *head, WL elem) |
724 | { |
2047 | { |
725 | elem->next = *head; |
2048 | elem->next = *head; |
726 | *head = elem; |
2049 | *head = elem; |
727 | } |
2050 | } |
728 | |
2051 | |
729 | static void |
2052 | void inline_size |
730 | wlist_del (WL *head, WL elem) |
2053 | wlist_del (WL *head, WL elem) |
731 | { |
2054 | { |
732 | while (*head) |
2055 | while (*head) |
733 | { |
2056 | { |
734 | if (*head == elem) |
2057 | if (*head == elem) |
… | |
… | |
739 | |
2062 | |
740 | head = &(*head)->next; |
2063 | head = &(*head)->next; |
741 | } |
2064 | } |
742 | } |
2065 | } |
743 | |
2066 | |
744 | static void |
2067 | void inline_speed |
745 | ev_clear_pending (W w) |
2068 | clear_pending (EV_P_ W w) |
746 | { |
2069 | { |
747 | if (w->pending) |
2070 | if (w->pending) |
748 | { |
2071 | { |
749 | pendings [w->pending - 1].w = 0; |
2072 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
750 | w->pending = 0; |
2073 | w->pending = 0; |
751 | } |
2074 | } |
752 | } |
2075 | } |
753 | |
2076 | |
754 | static void |
2077 | int |
|
|
2078 | ev_clear_pending (EV_P_ void *w) |
|
|
2079 | { |
|
|
2080 | W w_ = (W)w; |
|
|
2081 | int pending = w_->pending; |
|
|
2082 | |
|
|
2083 | if (expect_true (pending)) |
|
|
2084 | { |
|
|
2085 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
2086 | w_->pending = 0; |
|
|
2087 | p->w = 0; |
|
|
2088 | return p->events; |
|
|
2089 | } |
|
|
2090 | else |
|
|
2091 | return 0; |
|
|
2092 | } |
|
|
2093 | |
|
|
2094 | void inline_size |
|
|
2095 | pri_adjust (EV_P_ W w) |
|
|
2096 | { |
|
|
2097 | int pri = w->priority; |
|
|
2098 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
2099 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
2100 | w->priority = pri; |
|
|
2101 | } |
|
|
2102 | |
|
|
2103 | void inline_speed |
755 | ev_start (W w, int active) |
2104 | ev_start (EV_P_ W w, int active) |
756 | { |
2105 | { |
|
|
2106 | pri_adjust (EV_A_ w); |
757 | w->active = active; |
2107 | w->active = active; |
|
|
2108 | ev_ref (EV_A); |
758 | } |
2109 | } |
759 | |
2110 | |
760 | static void |
2111 | void inline_size |
761 | ev_stop (W w) |
2112 | ev_stop (EV_P_ W w) |
762 | { |
2113 | { |
|
|
2114 | ev_unref (EV_A); |
763 | w->active = 0; |
2115 | w->active = 0; |
764 | } |
2116 | } |
765 | |
2117 | |
766 | /*****************************************************************************/ |
2118 | /*****************************************************************************/ |
767 | |
2119 | |
768 | void |
2120 | void noinline |
769 | ev_io_start (struct ev_io *w) |
2121 | ev_io_start (EV_P_ ev_io *w) |
770 | { |
2122 | { |
771 | int fd = w->fd; |
2123 | int fd = w->fd; |
772 | |
2124 | |
773 | if (ev_is_active (w)) |
2125 | if (expect_false (ev_is_active (w))) |
774 | return; |
2126 | return; |
775 | |
2127 | |
776 | assert (("ev_io_start called with negative fd", fd >= 0)); |
2128 | assert (("ev_io_start called with negative fd", fd >= 0)); |
777 | |
2129 | |
|
|
2130 | EV_FREQUENT_CHECK; |
|
|
2131 | |
778 | ev_start ((W)w, 1); |
2132 | ev_start (EV_A_ (W)w, 1); |
779 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
2133 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
780 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
2134 | wlist_add (&anfds[fd].head, (WL)w); |
781 | |
2135 | |
782 | fd_change (fd); |
2136 | fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); |
783 | } |
2137 | w->events &= ~EV_IOFDSET; |
784 | |
2138 | |
785 | void |
2139 | EV_FREQUENT_CHECK; |
|
|
2140 | } |
|
|
2141 | |
|
|
2142 | void noinline |
786 | ev_io_stop (struct ev_io *w) |
2143 | ev_io_stop (EV_P_ ev_io *w) |
787 | { |
2144 | { |
788 | ev_clear_pending ((W)w); |
2145 | clear_pending (EV_A_ (W)w); |
789 | if (!ev_is_active (w)) |
2146 | if (expect_false (!ev_is_active (w))) |
790 | return; |
2147 | return; |
791 | |
2148 | |
|
|
2149 | assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
2150 | |
|
|
2151 | EV_FREQUENT_CHECK; |
|
|
2152 | |
792 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
2153 | wlist_del (&anfds[w->fd].head, (WL)w); |
793 | ev_stop ((W)w); |
2154 | ev_stop (EV_A_ (W)w); |
794 | |
2155 | |
795 | fd_change (w->fd); |
2156 | fd_change (EV_A_ w->fd, 1); |
796 | } |
|
|
797 | |
2157 | |
798 | void |
2158 | EV_FREQUENT_CHECK; |
|
|
2159 | } |
|
|
2160 | |
|
|
2161 | void noinline |
799 | ev_timer_start (struct ev_timer *w) |
2162 | ev_timer_start (EV_P_ ev_timer *w) |
800 | { |
2163 | { |
801 | if (ev_is_active (w)) |
2164 | if (expect_false (ev_is_active (w))) |
802 | return; |
2165 | return; |
803 | |
2166 | |
804 | w->at += now; |
2167 | ev_at (w) += mn_now; |
805 | |
2168 | |
806 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
2169 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
807 | |
2170 | |
808 | ev_start ((W)w, ++timercnt); |
2171 | EV_FREQUENT_CHECK; |
809 | array_needsize (timers, timermax, timercnt, ); |
|
|
810 | timers [timercnt - 1] = w; |
|
|
811 | upheap ((WT *)timers, timercnt - 1); |
|
|
812 | } |
|
|
813 | |
2172 | |
814 | void |
2173 | ++timercnt; |
|
|
2174 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
|
|
2175 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); |
|
|
2176 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
|
|
2177 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
2178 | upheap (timers, ev_active (w)); |
|
|
2179 | |
|
|
2180 | EV_FREQUENT_CHECK; |
|
|
2181 | |
|
|
2182 | /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
|
|
2183 | } |
|
|
2184 | |
|
|
2185 | void noinline |
815 | ev_timer_stop (struct ev_timer *w) |
2186 | ev_timer_stop (EV_P_ ev_timer *w) |
816 | { |
2187 | { |
817 | ev_clear_pending ((W)w); |
2188 | clear_pending (EV_A_ (W)w); |
818 | if (!ev_is_active (w)) |
2189 | if (expect_false (!ev_is_active (w))) |
819 | return; |
2190 | return; |
820 | |
2191 | |
821 | if (w->active < timercnt--) |
2192 | EV_FREQUENT_CHECK; |
|
|
2193 | |
|
|
2194 | { |
|
|
2195 | int active = ev_active (w); |
|
|
2196 | |
|
|
2197 | assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
|
|
2198 | |
|
|
2199 | --timercnt; |
|
|
2200 | |
|
|
2201 | if (expect_true (active < timercnt + HEAP0)) |
822 | { |
2202 | { |
823 | timers [w->active - 1] = timers [timercnt]; |
2203 | timers [active] = timers [timercnt + HEAP0]; |
824 | downheap ((WT *)timers, timercnt, w->active - 1); |
2204 | adjustheap (timers, timercnt, active); |
825 | } |
2205 | } |
|
|
2206 | } |
826 | |
2207 | |
827 | w->at = w->repeat; |
2208 | EV_FREQUENT_CHECK; |
828 | |
2209 | |
|
|
2210 | ev_at (w) -= mn_now; |
|
|
2211 | |
829 | ev_stop ((W)w); |
2212 | ev_stop (EV_A_ (W)w); |
830 | } |
2213 | } |
831 | |
2214 | |
832 | void |
2215 | void noinline |
833 | ev_timer_again (struct ev_timer *w) |
2216 | ev_timer_again (EV_P_ ev_timer *w) |
834 | { |
2217 | { |
|
|
2218 | EV_FREQUENT_CHECK; |
|
|
2219 | |
835 | if (ev_is_active (w)) |
2220 | if (ev_is_active (w)) |
836 | { |
2221 | { |
837 | if (w->repeat) |
2222 | if (w->repeat) |
838 | { |
2223 | { |
839 | w->at = now + w->repeat; |
2224 | ev_at (w) = mn_now + w->repeat; |
|
|
2225 | ANHE_at_cache (timers [ev_active (w)]); |
840 | downheap ((WT *)timers, timercnt, w->active - 1); |
2226 | adjustheap (timers, timercnt, ev_active (w)); |
841 | } |
2227 | } |
842 | else |
2228 | else |
843 | ev_timer_stop (w); |
2229 | ev_timer_stop (EV_A_ w); |
844 | } |
2230 | } |
845 | else if (w->repeat) |
2231 | else if (w->repeat) |
|
|
2232 | { |
|
|
2233 | ev_at (w) = w->repeat; |
846 | ev_timer_start (w); |
2234 | ev_timer_start (EV_A_ w); |
847 | } |
2235 | } |
848 | |
2236 | |
849 | void |
2237 | EV_FREQUENT_CHECK; |
|
|
2238 | } |
|
|
2239 | |
|
|
2240 | #if EV_PERIODIC_ENABLE |
|
|
2241 | void noinline |
850 | ev_periodic_start (struct ev_periodic *w) |
2242 | ev_periodic_start (EV_P_ ev_periodic *w) |
851 | { |
2243 | { |
852 | if (ev_is_active (w)) |
2244 | if (expect_false (ev_is_active (w))) |
853 | return; |
2245 | return; |
854 | |
2246 | |
|
|
2247 | if (w->reschedule_cb) |
|
|
2248 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
2249 | else if (w->interval) |
|
|
2250 | { |
855 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2251 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
856 | |
|
|
857 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
2252 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
858 | if (w->interval) |
|
|
859 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
2253 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2254 | } |
|
|
2255 | else |
|
|
2256 | ev_at (w) = w->offset; |
860 | |
2257 | |
|
|
2258 | EV_FREQUENT_CHECK; |
|
|
2259 | |
|
|
2260 | ++periodiccnt; |
861 | ev_start ((W)w, ++periodiccnt); |
2261 | ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); |
862 | array_needsize (periodics, periodicmax, periodiccnt, ); |
2262 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); |
863 | periodics [periodiccnt - 1] = w; |
2263 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
864 | upheap ((WT *)periodics, periodiccnt - 1); |
2264 | ANHE_at_cache (periodics [ev_active (w)]); |
865 | } |
2265 | upheap (periodics, ev_active (w)); |
866 | |
2266 | |
867 | void |
2267 | EV_FREQUENT_CHECK; |
|
|
2268 | |
|
|
2269 | /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
|
|
2270 | } |
|
|
2271 | |
|
|
2272 | void noinline |
868 | ev_periodic_stop (struct ev_periodic *w) |
2273 | ev_periodic_stop (EV_P_ ev_periodic *w) |
869 | { |
2274 | { |
870 | ev_clear_pending ((W)w); |
2275 | clear_pending (EV_A_ (W)w); |
871 | if (!ev_is_active (w)) |
2276 | if (expect_false (!ev_is_active (w))) |
872 | return; |
2277 | return; |
873 | |
2278 | |
874 | if (w->active < periodiccnt--) |
2279 | EV_FREQUENT_CHECK; |
|
|
2280 | |
|
|
2281 | { |
|
|
2282 | int active = ev_active (w); |
|
|
2283 | |
|
|
2284 | assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
|
|
2285 | |
|
|
2286 | --periodiccnt; |
|
|
2287 | |
|
|
2288 | if (expect_true (active < periodiccnt + HEAP0)) |
875 | { |
2289 | { |
876 | periodics [w->active - 1] = periodics [periodiccnt]; |
2290 | periodics [active] = periodics [periodiccnt + HEAP0]; |
877 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
2291 | adjustheap (periodics, periodiccnt, active); |
878 | } |
2292 | } |
|
|
2293 | } |
879 | |
2294 | |
|
|
2295 | EV_FREQUENT_CHECK; |
|
|
2296 | |
880 | ev_stop ((W)w); |
2297 | ev_stop (EV_A_ (W)w); |
881 | } |
2298 | } |
882 | |
2299 | |
883 | void |
2300 | void noinline |
|
|
2301 | ev_periodic_again (EV_P_ ev_periodic *w) |
|
|
2302 | { |
|
|
2303 | /* TODO: use adjustheap and recalculation */ |
|
|
2304 | ev_periodic_stop (EV_A_ w); |
|
|
2305 | ev_periodic_start (EV_A_ w); |
|
|
2306 | } |
|
|
2307 | #endif |
|
|
2308 | |
|
|
2309 | #ifndef SA_RESTART |
|
|
2310 | # define SA_RESTART 0 |
|
|
2311 | #endif |
|
|
2312 | |
|
|
2313 | void noinline |
884 | ev_signal_start (struct ev_signal *w) |
2314 | ev_signal_start (EV_P_ ev_signal *w) |
885 | { |
2315 | { |
|
|
2316 | #if EV_MULTIPLICITY |
|
|
2317 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2318 | #endif |
886 | if (ev_is_active (w)) |
2319 | if (expect_false (ev_is_active (w))) |
887 | return; |
2320 | return; |
888 | |
2321 | |
889 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
2322 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
890 | |
2323 | |
891 | ev_start ((W)w, 1); |
2324 | evpipe_init (EV_A); |
|
|
2325 | |
|
|
2326 | EV_FREQUENT_CHECK; |
|
|
2327 | |
|
|
2328 | { |
|
|
2329 | #ifndef _WIN32 |
|
|
2330 | sigset_t full, prev; |
|
|
2331 | sigfillset (&full); |
|
|
2332 | sigprocmask (SIG_SETMASK, &full, &prev); |
|
|
2333 | #endif |
|
|
2334 | |
892 | array_needsize (signals, signalmax, w->signum, signals_init); |
2335 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
|
|
2336 | |
|
|
2337 | #ifndef _WIN32 |
|
|
2338 | sigprocmask (SIG_SETMASK, &prev, 0); |
|
|
2339 | #endif |
|
|
2340 | } |
|
|
2341 | |
|
|
2342 | ev_start (EV_A_ (W)w, 1); |
893 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
2343 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
894 | |
2344 | |
895 | if (!w->next) |
2345 | if (!((WL)w)->next) |
896 | { |
2346 | { |
|
|
2347 | #if _WIN32 |
|
|
2348 | signal (w->signum, ev_sighandler); |
|
|
2349 | #else |
897 | struct sigaction sa; |
2350 | struct sigaction sa; |
898 | sa.sa_handler = sighandler; |
2351 | sa.sa_handler = ev_sighandler; |
899 | sigfillset (&sa.sa_mask); |
2352 | sigfillset (&sa.sa_mask); |
900 | sa.sa_flags = 0; |
2353 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
901 | sigaction (w->signum, &sa, 0); |
2354 | sigaction (w->signum, &sa, 0); |
|
|
2355 | #endif |
902 | } |
2356 | } |
903 | } |
|
|
904 | |
2357 | |
905 | void |
2358 | EV_FREQUENT_CHECK; |
|
|
2359 | } |
|
|
2360 | |
|
|
2361 | void noinline |
906 | ev_signal_stop (struct ev_signal *w) |
2362 | ev_signal_stop (EV_P_ ev_signal *w) |
907 | { |
2363 | { |
908 | ev_clear_pending ((W)w); |
2364 | clear_pending (EV_A_ (W)w); |
909 | if (!ev_is_active (w)) |
2365 | if (expect_false (!ev_is_active (w))) |
910 | return; |
2366 | return; |
911 | |
2367 | |
|
|
2368 | EV_FREQUENT_CHECK; |
|
|
2369 | |
912 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
2370 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
913 | ev_stop ((W)w); |
2371 | ev_stop (EV_A_ (W)w); |
914 | |
2372 | |
915 | if (!signals [w->signum - 1].head) |
2373 | if (!signals [w->signum - 1].head) |
916 | signal (w->signum, SIG_DFL); |
2374 | signal (w->signum, SIG_DFL); |
917 | } |
|
|
918 | |
2375 | |
|
|
2376 | EV_FREQUENT_CHECK; |
|
|
2377 | } |
|
|
2378 | |
919 | void |
2379 | void |
920 | ev_idle_start (struct ev_idle *w) |
2380 | ev_child_start (EV_P_ ev_child *w) |
921 | { |
2381 | { |
|
|
2382 | #if EV_MULTIPLICITY |
|
|
2383 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2384 | #endif |
922 | if (ev_is_active (w)) |
2385 | if (expect_false (ev_is_active (w))) |
923 | return; |
2386 | return; |
924 | |
2387 | |
925 | ev_start ((W)w, ++idlecnt); |
2388 | EV_FREQUENT_CHECK; |
926 | array_needsize (idles, idlemax, idlecnt, ); |
|
|
927 | idles [idlecnt - 1] = w; |
|
|
928 | } |
|
|
929 | |
2389 | |
|
|
2390 | ev_start (EV_A_ (W)w, 1); |
|
|
2391 | wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
|
|
2392 | |
|
|
2393 | EV_FREQUENT_CHECK; |
|
|
2394 | } |
|
|
2395 | |
930 | void |
2396 | void |
931 | ev_idle_stop (struct ev_idle *w) |
2397 | ev_child_stop (EV_P_ ev_child *w) |
932 | { |
2398 | { |
933 | ev_clear_pending ((W)w); |
2399 | clear_pending (EV_A_ (W)w); |
934 | if (ev_is_active (w)) |
2400 | if (expect_false (!ev_is_active (w))) |
935 | return; |
2401 | return; |
936 | |
2402 | |
937 | idles [w->active - 1] = idles [--idlecnt]; |
2403 | EV_FREQUENT_CHECK; |
|
|
2404 | |
|
|
2405 | wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
938 | ev_stop ((W)w); |
2406 | ev_stop (EV_A_ (W)w); |
939 | } |
|
|
940 | |
2407 | |
941 | void |
2408 | EV_FREQUENT_CHECK; |
942 | ev_prepare_start (struct ev_prepare *w) |
2409 | } |
|
|
2410 | |
|
|
2411 | #if EV_STAT_ENABLE |
|
|
2412 | |
|
|
2413 | # ifdef _WIN32 |
|
|
2414 | # undef lstat |
|
|
2415 | # define lstat(a,b) _stati64 (a,b) |
|
|
2416 | # endif |
|
|
2417 | |
|
|
2418 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
2419 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
2420 | |
|
|
2421 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
2422 | |
|
|
2423 | #if EV_USE_INOTIFY |
|
|
2424 | # define EV_INOTIFY_BUFSIZE 8192 |
|
|
2425 | |
|
|
2426 | static void noinline |
|
|
2427 | infy_add (EV_P_ ev_stat *w) |
943 | { |
2428 | { |
944 | if (ev_is_active (w)) |
2429 | w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); |
|
|
2430 | |
|
|
2431 | if (w->wd < 0) |
|
|
2432 | { |
|
|
2433 | ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
|
|
2434 | |
|
|
2435 | /* monitor some parent directory for speedup hints */ |
|
|
2436 | /* note that exceeding the hardcoded limit is not a correctness issue, */ |
|
|
2437 | /* but an efficiency issue only */ |
|
|
2438 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
|
|
2439 | { |
|
|
2440 | char path [4096]; |
|
|
2441 | strcpy (path, w->path); |
|
|
2442 | |
|
|
2443 | do |
|
|
2444 | { |
|
|
2445 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
|
|
2446 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
|
|
2447 | |
|
|
2448 | char *pend = strrchr (path, '/'); |
|
|
2449 | |
|
|
2450 | if (!pend) |
|
|
2451 | break; /* whoops, no '/', complain to your admin */ |
|
|
2452 | |
|
|
2453 | *pend = 0; |
|
|
2454 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
2455 | } |
|
|
2456 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
2457 | } |
|
|
2458 | } |
|
|
2459 | else |
|
|
2460 | ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */ |
|
|
2461 | |
|
|
2462 | if (w->wd >= 0) |
|
|
2463 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
2464 | } |
|
|
2465 | |
|
|
2466 | static void noinline |
|
|
2467 | infy_del (EV_P_ ev_stat *w) |
|
|
2468 | { |
|
|
2469 | int slot; |
|
|
2470 | int wd = w->wd; |
|
|
2471 | |
|
|
2472 | if (wd < 0) |
945 | return; |
2473 | return; |
946 | |
2474 | |
|
|
2475 | w->wd = -2; |
|
|
2476 | slot = wd & (EV_INOTIFY_HASHSIZE - 1); |
|
|
2477 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
2478 | |
|
|
2479 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
2480 | inotify_rm_watch (fs_fd, wd); |
|
|
2481 | } |
|
|
2482 | |
|
|
2483 | static void noinline |
|
|
2484 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
2485 | { |
|
|
2486 | if (slot < 0) |
|
|
2487 | /* overflow, need to check for all hahs slots */ |
|
|
2488 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2489 | infy_wd (EV_A_ slot, wd, ev); |
|
|
2490 | else |
|
|
2491 | { |
|
|
2492 | WL w_; |
|
|
2493 | |
|
|
2494 | for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) |
|
|
2495 | { |
|
|
2496 | ev_stat *w = (ev_stat *)w_; |
|
|
2497 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
2498 | |
|
|
2499 | if (w->wd == wd || wd == -1) |
|
|
2500 | { |
|
|
2501 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
2502 | { |
|
|
2503 | w->wd = -1; |
|
|
2504 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2505 | } |
|
|
2506 | |
|
|
2507 | stat_timer_cb (EV_A_ &w->timer, 0); |
|
|
2508 | } |
|
|
2509 | } |
|
|
2510 | } |
|
|
2511 | } |
|
|
2512 | |
|
|
2513 | static void |
|
|
2514 | infy_cb (EV_P_ ev_io *w, int revents) |
|
|
2515 | { |
|
|
2516 | char buf [EV_INOTIFY_BUFSIZE]; |
|
|
2517 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
2518 | int ofs; |
|
|
2519 | int len = read (fs_fd, buf, sizeof (buf)); |
|
|
2520 | |
|
|
2521 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
|
|
2522 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
2523 | } |
|
|
2524 | |
|
|
2525 | void inline_size |
|
|
2526 | infy_init (EV_P) |
|
|
2527 | { |
|
|
2528 | if (fs_fd != -2) |
|
|
2529 | return; |
|
|
2530 | |
|
|
2531 | fs_fd = inotify_init (); |
|
|
2532 | |
|
|
2533 | if (fs_fd >= 0) |
|
|
2534 | { |
|
|
2535 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
2536 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
2537 | ev_io_start (EV_A_ &fs_w); |
|
|
2538 | } |
|
|
2539 | } |
|
|
2540 | |
|
|
2541 | void inline_size |
|
|
2542 | infy_fork (EV_P) |
|
|
2543 | { |
|
|
2544 | int slot; |
|
|
2545 | |
|
|
2546 | if (fs_fd < 0) |
|
|
2547 | return; |
|
|
2548 | |
|
|
2549 | close (fs_fd); |
|
|
2550 | fs_fd = inotify_init (); |
|
|
2551 | |
|
|
2552 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2553 | { |
|
|
2554 | WL w_ = fs_hash [slot].head; |
|
|
2555 | fs_hash [slot].head = 0; |
|
|
2556 | |
|
|
2557 | while (w_) |
|
|
2558 | { |
|
|
2559 | ev_stat *w = (ev_stat *)w_; |
|
|
2560 | w_ = w_->next; /* lets us add this watcher */ |
|
|
2561 | |
|
|
2562 | w->wd = -1; |
|
|
2563 | |
|
|
2564 | if (fs_fd >= 0) |
|
|
2565 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2566 | else |
|
|
2567 | ev_timer_start (EV_A_ &w->timer); |
|
|
2568 | } |
|
|
2569 | |
|
|
2570 | } |
|
|
2571 | } |
|
|
2572 | |
|
|
2573 | #endif |
|
|
2574 | |
|
|
2575 | #ifdef _WIN32 |
|
|
2576 | # define EV_LSTAT(p,b) _stati64 (p, b) |
|
|
2577 | #else |
|
|
2578 | # define EV_LSTAT(p,b) lstat (p, b) |
|
|
2579 | #endif |
|
|
2580 | |
|
|
2581 | void |
|
|
2582 | ev_stat_stat (EV_P_ ev_stat *w) |
|
|
2583 | { |
|
|
2584 | if (lstat (w->path, &w->attr) < 0) |
|
|
2585 | w->attr.st_nlink = 0; |
|
|
2586 | else if (!w->attr.st_nlink) |
|
|
2587 | w->attr.st_nlink = 1; |
|
|
2588 | } |
|
|
2589 | |
|
|
2590 | static void noinline |
|
|
2591 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
2592 | { |
|
|
2593 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
2594 | |
|
|
2595 | /* we copy this here each the time so that */ |
|
|
2596 | /* prev has the old value when the callback gets invoked */ |
|
|
2597 | w->prev = w->attr; |
|
|
2598 | ev_stat_stat (EV_A_ w); |
|
|
2599 | |
|
|
2600 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
2601 | if ( |
|
|
2602 | w->prev.st_dev != w->attr.st_dev |
|
|
2603 | || w->prev.st_ino != w->attr.st_ino |
|
|
2604 | || w->prev.st_mode != w->attr.st_mode |
|
|
2605 | || w->prev.st_nlink != w->attr.st_nlink |
|
|
2606 | || w->prev.st_uid != w->attr.st_uid |
|
|
2607 | || w->prev.st_gid != w->attr.st_gid |
|
|
2608 | || w->prev.st_rdev != w->attr.st_rdev |
|
|
2609 | || w->prev.st_size != w->attr.st_size |
|
|
2610 | || w->prev.st_atime != w->attr.st_atime |
|
|
2611 | || w->prev.st_mtime != w->attr.st_mtime |
|
|
2612 | || w->prev.st_ctime != w->attr.st_ctime |
|
|
2613 | ) { |
|
|
2614 | #if EV_USE_INOTIFY |
|
|
2615 | infy_del (EV_A_ w); |
|
|
2616 | infy_add (EV_A_ w); |
|
|
2617 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
2618 | #endif |
|
|
2619 | |
|
|
2620 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
2621 | } |
|
|
2622 | } |
|
|
2623 | |
|
|
2624 | void |
|
|
2625 | ev_stat_start (EV_P_ ev_stat *w) |
|
|
2626 | { |
|
|
2627 | if (expect_false (ev_is_active (w))) |
|
|
2628 | return; |
|
|
2629 | |
|
|
2630 | /* since we use memcmp, we need to clear any padding data etc. */ |
|
|
2631 | memset (&w->prev, 0, sizeof (ev_statdata)); |
|
|
2632 | memset (&w->attr, 0, sizeof (ev_statdata)); |
|
|
2633 | |
|
|
2634 | ev_stat_stat (EV_A_ w); |
|
|
2635 | |
|
|
2636 | if (w->interval < MIN_STAT_INTERVAL) |
|
|
2637 | w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2638 | |
|
|
2639 | ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); |
|
|
2640 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
2641 | |
|
|
2642 | #if EV_USE_INOTIFY |
|
|
2643 | infy_init (EV_A); |
|
|
2644 | |
|
|
2645 | if (fs_fd >= 0) |
|
|
2646 | infy_add (EV_A_ w); |
|
|
2647 | else |
|
|
2648 | #endif |
|
|
2649 | ev_timer_start (EV_A_ &w->timer); |
|
|
2650 | |
|
|
2651 | ev_start (EV_A_ (W)w, 1); |
|
|
2652 | |
|
|
2653 | EV_FREQUENT_CHECK; |
|
|
2654 | } |
|
|
2655 | |
|
|
2656 | void |
|
|
2657 | ev_stat_stop (EV_P_ ev_stat *w) |
|
|
2658 | { |
|
|
2659 | clear_pending (EV_A_ (W)w); |
|
|
2660 | if (expect_false (!ev_is_active (w))) |
|
|
2661 | return; |
|
|
2662 | |
|
|
2663 | EV_FREQUENT_CHECK; |
|
|
2664 | |
|
|
2665 | #if EV_USE_INOTIFY |
|
|
2666 | infy_del (EV_A_ w); |
|
|
2667 | #endif |
|
|
2668 | ev_timer_stop (EV_A_ &w->timer); |
|
|
2669 | |
|
|
2670 | ev_stop (EV_A_ (W)w); |
|
|
2671 | |
|
|
2672 | EV_FREQUENT_CHECK; |
|
|
2673 | } |
|
|
2674 | #endif |
|
|
2675 | |
|
|
2676 | #if EV_IDLE_ENABLE |
|
|
2677 | void |
|
|
2678 | ev_idle_start (EV_P_ ev_idle *w) |
|
|
2679 | { |
|
|
2680 | if (expect_false (ev_is_active (w))) |
|
|
2681 | return; |
|
|
2682 | |
|
|
2683 | pri_adjust (EV_A_ (W)w); |
|
|
2684 | |
|
|
2685 | EV_FREQUENT_CHECK; |
|
|
2686 | |
|
|
2687 | { |
|
|
2688 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
2689 | |
|
|
2690 | ++idleall; |
|
|
2691 | ev_start (EV_A_ (W)w, active); |
|
|
2692 | |
|
|
2693 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
|
|
2694 | idles [ABSPRI (w)][active - 1] = w; |
|
|
2695 | } |
|
|
2696 | |
|
|
2697 | EV_FREQUENT_CHECK; |
|
|
2698 | } |
|
|
2699 | |
|
|
2700 | void |
|
|
2701 | ev_idle_stop (EV_P_ ev_idle *w) |
|
|
2702 | { |
|
|
2703 | clear_pending (EV_A_ (W)w); |
|
|
2704 | if (expect_false (!ev_is_active (w))) |
|
|
2705 | return; |
|
|
2706 | |
|
|
2707 | EV_FREQUENT_CHECK; |
|
|
2708 | |
|
|
2709 | { |
|
|
2710 | int active = ev_active (w); |
|
|
2711 | |
|
|
2712 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
2713 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
|
|
2714 | |
|
|
2715 | ev_stop (EV_A_ (W)w); |
|
|
2716 | --idleall; |
|
|
2717 | } |
|
|
2718 | |
|
|
2719 | EV_FREQUENT_CHECK; |
|
|
2720 | } |
|
|
2721 | #endif |
|
|
2722 | |
|
|
2723 | void |
|
|
2724 | ev_prepare_start (EV_P_ ev_prepare *w) |
|
|
2725 | { |
|
|
2726 | if (expect_false (ev_is_active (w))) |
|
|
2727 | return; |
|
|
2728 | |
|
|
2729 | EV_FREQUENT_CHECK; |
|
|
2730 | |
947 | ev_start ((W)w, ++preparecnt); |
2731 | ev_start (EV_A_ (W)w, ++preparecnt); |
948 | array_needsize (prepares, preparemax, preparecnt, ); |
2732 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
949 | prepares [preparecnt - 1] = w; |
2733 | prepares [preparecnt - 1] = w; |
950 | } |
|
|
951 | |
2734 | |
|
|
2735 | EV_FREQUENT_CHECK; |
|
|
2736 | } |
|
|
2737 | |
952 | void |
2738 | void |
953 | ev_prepare_stop (struct ev_prepare *w) |
2739 | ev_prepare_stop (EV_P_ ev_prepare *w) |
954 | { |
2740 | { |
955 | ev_clear_pending ((W)w); |
2741 | clear_pending (EV_A_ (W)w); |
956 | if (ev_is_active (w)) |
2742 | if (expect_false (!ev_is_active (w))) |
957 | return; |
2743 | return; |
958 | |
2744 | |
|
|
2745 | EV_FREQUENT_CHECK; |
|
|
2746 | |
|
|
2747 | { |
|
|
2748 | int active = ev_active (w); |
|
|
2749 | |
959 | prepares [w->active - 1] = prepares [--preparecnt]; |
2750 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
2751 | ev_active (prepares [active - 1]) = active; |
|
|
2752 | } |
|
|
2753 | |
960 | ev_stop ((W)w); |
2754 | ev_stop (EV_A_ (W)w); |
961 | } |
|
|
962 | |
2755 | |
|
|
2756 | EV_FREQUENT_CHECK; |
|
|
2757 | } |
|
|
2758 | |
963 | void |
2759 | void |
964 | ev_check_start (struct ev_check *w) |
2760 | ev_check_start (EV_P_ ev_check *w) |
965 | { |
2761 | { |
966 | if (ev_is_active (w)) |
2762 | if (expect_false (ev_is_active (w))) |
967 | return; |
2763 | return; |
968 | |
2764 | |
|
|
2765 | EV_FREQUENT_CHECK; |
|
|
2766 | |
969 | ev_start ((W)w, ++checkcnt); |
2767 | ev_start (EV_A_ (W)w, ++checkcnt); |
970 | array_needsize (checks, checkmax, checkcnt, ); |
2768 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
971 | checks [checkcnt - 1] = w; |
2769 | checks [checkcnt - 1] = w; |
972 | } |
|
|
973 | |
2770 | |
|
|
2771 | EV_FREQUENT_CHECK; |
|
|
2772 | } |
|
|
2773 | |
974 | void |
2774 | void |
975 | ev_check_stop (struct ev_check *w) |
2775 | ev_check_stop (EV_P_ ev_check *w) |
976 | { |
2776 | { |
977 | ev_clear_pending ((W)w); |
2777 | clear_pending (EV_A_ (W)w); |
978 | if (ev_is_active (w)) |
2778 | if (expect_false (!ev_is_active (w))) |
979 | return; |
2779 | return; |
980 | |
2780 | |
|
|
2781 | EV_FREQUENT_CHECK; |
|
|
2782 | |
|
|
2783 | { |
|
|
2784 | int active = ev_active (w); |
|
|
2785 | |
981 | checks [w->active - 1] = checks [--checkcnt]; |
2786 | checks [active - 1] = checks [--checkcnt]; |
|
|
2787 | ev_active (checks [active - 1]) = active; |
|
|
2788 | } |
|
|
2789 | |
982 | ev_stop ((W)w); |
2790 | ev_stop (EV_A_ (W)w); |
983 | } |
|
|
984 | |
2791 | |
985 | void |
2792 | EV_FREQUENT_CHECK; |
986 | ev_child_start (struct ev_child *w) |
2793 | } |
|
|
2794 | |
|
|
2795 | #if EV_EMBED_ENABLE |
|
|
2796 | void noinline |
|
|
2797 | ev_embed_sweep (EV_P_ ev_embed *w) |
987 | { |
2798 | { |
|
|
2799 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
2800 | } |
|
|
2801 | |
|
|
2802 | static void |
|
|
2803 | embed_io_cb (EV_P_ ev_io *io, int revents) |
|
|
2804 | { |
|
|
2805 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
|
|
2806 | |
988 | if (ev_is_active (w)) |
2807 | if (ev_cb (w)) |
|
|
2808 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
2809 | else |
|
|
2810 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
2811 | } |
|
|
2812 | |
|
|
2813 | static void |
|
|
2814 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
2815 | { |
|
|
2816 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
2817 | |
|
|
2818 | { |
|
|
2819 | struct ev_loop *loop = w->other; |
|
|
2820 | |
|
|
2821 | while (fdchangecnt) |
|
|
2822 | { |
|
|
2823 | fd_reify (EV_A); |
|
|
2824 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
2825 | } |
|
|
2826 | } |
|
|
2827 | } |
|
|
2828 | |
|
|
2829 | #if 0 |
|
|
2830 | static void |
|
|
2831 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
2832 | { |
|
|
2833 | ev_idle_stop (EV_A_ idle); |
|
|
2834 | } |
|
|
2835 | #endif |
|
|
2836 | |
|
|
2837 | void |
|
|
2838 | ev_embed_start (EV_P_ ev_embed *w) |
|
|
2839 | { |
|
|
2840 | if (expect_false (ev_is_active (w))) |
989 | return; |
2841 | return; |
990 | |
2842 | |
|
|
2843 | { |
|
|
2844 | struct ev_loop *loop = w->other; |
|
|
2845 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
2846 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
|
|
2847 | } |
|
|
2848 | |
|
|
2849 | EV_FREQUENT_CHECK; |
|
|
2850 | |
|
|
2851 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
2852 | ev_io_start (EV_A_ &w->io); |
|
|
2853 | |
|
|
2854 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
2855 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
2856 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
2857 | |
|
|
2858 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
2859 | |
991 | ev_start ((W)w, 1); |
2860 | ev_start (EV_A_ (W)w, 1); |
992 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
993 | } |
|
|
994 | |
2861 | |
|
|
2862 | EV_FREQUENT_CHECK; |
|
|
2863 | } |
|
|
2864 | |
995 | void |
2865 | void |
996 | ev_child_stop (struct ev_child *w) |
2866 | ev_embed_stop (EV_P_ ev_embed *w) |
997 | { |
2867 | { |
998 | ev_clear_pending ((W)w); |
2868 | clear_pending (EV_A_ (W)w); |
999 | if (ev_is_active (w)) |
2869 | if (expect_false (!ev_is_active (w))) |
1000 | return; |
2870 | return; |
1001 | |
2871 | |
1002 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
2872 | EV_FREQUENT_CHECK; |
|
|
2873 | |
|
|
2874 | ev_io_stop (EV_A_ &w->io); |
|
|
2875 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
2876 | |
1003 | ev_stop ((W)w); |
2877 | ev_stop (EV_A_ (W)w); |
|
|
2878 | |
|
|
2879 | EV_FREQUENT_CHECK; |
1004 | } |
2880 | } |
|
|
2881 | #endif |
|
|
2882 | |
|
|
2883 | #if EV_FORK_ENABLE |
|
|
2884 | void |
|
|
2885 | ev_fork_start (EV_P_ ev_fork *w) |
|
|
2886 | { |
|
|
2887 | if (expect_false (ev_is_active (w))) |
|
|
2888 | return; |
|
|
2889 | |
|
|
2890 | EV_FREQUENT_CHECK; |
|
|
2891 | |
|
|
2892 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
2893 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
2894 | forks [forkcnt - 1] = w; |
|
|
2895 | |
|
|
2896 | EV_FREQUENT_CHECK; |
|
|
2897 | } |
|
|
2898 | |
|
|
2899 | void |
|
|
2900 | ev_fork_stop (EV_P_ ev_fork *w) |
|
|
2901 | { |
|
|
2902 | clear_pending (EV_A_ (W)w); |
|
|
2903 | if (expect_false (!ev_is_active (w))) |
|
|
2904 | return; |
|
|
2905 | |
|
|
2906 | EV_FREQUENT_CHECK; |
|
|
2907 | |
|
|
2908 | { |
|
|
2909 | int active = ev_active (w); |
|
|
2910 | |
|
|
2911 | forks [active - 1] = forks [--forkcnt]; |
|
|
2912 | ev_active (forks [active - 1]) = active; |
|
|
2913 | } |
|
|
2914 | |
|
|
2915 | ev_stop (EV_A_ (W)w); |
|
|
2916 | |
|
|
2917 | EV_FREQUENT_CHECK; |
|
|
2918 | } |
|
|
2919 | #endif |
|
|
2920 | |
|
|
2921 | #if EV_ASYNC_ENABLE |
|
|
2922 | void |
|
|
2923 | ev_async_start (EV_P_ ev_async *w) |
|
|
2924 | { |
|
|
2925 | if (expect_false (ev_is_active (w))) |
|
|
2926 | return; |
|
|
2927 | |
|
|
2928 | evpipe_init (EV_A); |
|
|
2929 | |
|
|
2930 | EV_FREQUENT_CHECK; |
|
|
2931 | |
|
|
2932 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
2933 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
2934 | asyncs [asynccnt - 1] = w; |
|
|
2935 | |
|
|
2936 | EV_FREQUENT_CHECK; |
|
|
2937 | } |
|
|
2938 | |
|
|
2939 | void |
|
|
2940 | ev_async_stop (EV_P_ ev_async *w) |
|
|
2941 | { |
|
|
2942 | clear_pending (EV_A_ (W)w); |
|
|
2943 | if (expect_false (!ev_is_active (w))) |
|
|
2944 | return; |
|
|
2945 | |
|
|
2946 | EV_FREQUENT_CHECK; |
|
|
2947 | |
|
|
2948 | { |
|
|
2949 | int active = ev_active (w); |
|
|
2950 | |
|
|
2951 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
2952 | ev_active (asyncs [active - 1]) = active; |
|
|
2953 | } |
|
|
2954 | |
|
|
2955 | ev_stop (EV_A_ (W)w); |
|
|
2956 | |
|
|
2957 | EV_FREQUENT_CHECK; |
|
|
2958 | } |
|
|
2959 | |
|
|
2960 | void |
|
|
2961 | ev_async_send (EV_P_ ev_async *w) |
|
|
2962 | { |
|
|
2963 | w->sent = 1; |
|
|
2964 | evpipe_write (EV_A_ &gotasync); |
|
|
2965 | } |
|
|
2966 | #endif |
1005 | |
2967 | |
1006 | /*****************************************************************************/ |
2968 | /*****************************************************************************/ |
1007 | |
2969 | |
1008 | struct ev_once |
2970 | struct ev_once |
1009 | { |
2971 | { |
1010 | struct ev_io io; |
2972 | ev_io io; |
1011 | struct ev_timer to; |
2973 | ev_timer to; |
1012 | void (*cb)(int revents, void *arg); |
2974 | void (*cb)(int revents, void *arg); |
1013 | void *arg; |
2975 | void *arg; |
1014 | }; |
2976 | }; |
1015 | |
2977 | |
1016 | static void |
2978 | static void |
1017 | once_cb (struct ev_once *once, int revents) |
2979 | once_cb (EV_P_ struct ev_once *once, int revents) |
1018 | { |
2980 | { |
1019 | void (*cb)(int revents, void *arg) = once->cb; |
2981 | void (*cb)(int revents, void *arg) = once->cb; |
1020 | void *arg = once->arg; |
2982 | void *arg = once->arg; |
1021 | |
2983 | |
1022 | ev_io_stop (&once->io); |
2984 | ev_io_stop (EV_A_ &once->io); |
1023 | ev_timer_stop (&once->to); |
2985 | ev_timer_stop (EV_A_ &once->to); |
1024 | free (once); |
2986 | ev_free (once); |
1025 | |
2987 | |
1026 | cb (revents, arg); |
2988 | cb (revents, arg); |
1027 | } |
2989 | } |
1028 | |
2990 | |
1029 | static void |
2991 | static void |
1030 | once_cb_io (struct ev_io *w, int revents) |
2992 | once_cb_io (EV_P_ ev_io *w, int revents) |
1031 | { |
2993 | { |
1032 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
2994 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1033 | } |
2995 | } |
1034 | |
2996 | |
1035 | static void |
2997 | static void |
1036 | once_cb_to (struct ev_timer *w, int revents) |
2998 | once_cb_to (EV_P_ ev_timer *w, int revents) |
1037 | { |
2999 | { |
1038 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
3000 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1039 | } |
3001 | } |
1040 | |
3002 | |
1041 | void |
3003 | void |
1042 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
3004 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1043 | { |
3005 | { |
1044 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
3006 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
1045 | |
3007 | |
1046 | if (!once) |
3008 | if (expect_false (!once)) |
|
|
3009 | { |
1047 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
3010 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
1048 | else |
3011 | return; |
1049 | { |
3012 | } |
|
|
3013 | |
1050 | once->cb = cb; |
3014 | once->cb = cb; |
1051 | once->arg = arg; |
3015 | once->arg = arg; |
1052 | |
3016 | |
1053 | ev_watcher_init (&once->io, once_cb_io); |
3017 | ev_init (&once->io, once_cb_io); |
1054 | if (fd >= 0) |
3018 | if (fd >= 0) |
1055 | { |
3019 | { |
1056 | ev_io_set (&once->io, fd, events); |
3020 | ev_io_set (&once->io, fd, events); |
1057 | ev_io_start (&once->io); |
3021 | ev_io_start (EV_A_ &once->io); |
1058 | } |
3022 | } |
1059 | |
3023 | |
1060 | ev_watcher_init (&once->to, once_cb_to); |
3024 | ev_init (&once->to, once_cb_to); |
1061 | if (timeout >= 0.) |
3025 | if (timeout >= 0.) |
1062 | { |
3026 | { |
1063 | ev_timer_set (&once->to, timeout, 0.); |
3027 | ev_timer_set (&once->to, timeout, 0.); |
1064 | ev_timer_start (&once->to); |
3028 | ev_timer_start (EV_A_ &once->to); |
1065 | } |
|
|
1066 | } |
|
|
1067 | } |
|
|
1068 | |
|
|
1069 | /*****************************************************************************/ |
|
|
1070 | |
|
|
1071 | #if 0 |
|
|
1072 | |
|
|
1073 | struct ev_io wio; |
|
|
1074 | |
|
|
1075 | static void |
|
|
1076 | sin_cb (struct ev_io *w, int revents) |
|
|
1077 | { |
|
|
1078 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
1079 | } |
|
|
1080 | |
|
|
1081 | static void |
|
|
1082 | ocb (struct ev_timer *w, int revents) |
|
|
1083 | { |
|
|
1084 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
1085 | ev_timer_stop (w); |
|
|
1086 | ev_timer_start (w); |
|
|
1087 | } |
|
|
1088 | |
|
|
1089 | static void |
|
|
1090 | scb (struct ev_signal *w, int revents) |
|
|
1091 | { |
|
|
1092 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
1093 | ev_io_stop (&wio); |
|
|
1094 | ev_io_start (&wio); |
|
|
1095 | } |
|
|
1096 | |
|
|
1097 | static void |
|
|
1098 | gcb (struct ev_signal *w, int revents) |
|
|
1099 | { |
|
|
1100 | fprintf (stderr, "generic %x\n", revents); |
|
|
1101 | |
|
|
1102 | } |
|
|
1103 | |
|
|
1104 | int main (void) |
|
|
1105 | { |
|
|
1106 | ev_init (0); |
|
|
1107 | |
|
|
1108 | ev_io_init (&wio, sin_cb, 0, EV_READ); |
|
|
1109 | ev_io_start (&wio); |
|
|
1110 | |
|
|
1111 | struct ev_timer t[10000]; |
|
|
1112 | |
|
|
1113 | #if 0 |
|
|
1114 | int i; |
|
|
1115 | for (i = 0; i < 10000; ++i) |
|
|
1116 | { |
3029 | } |
1117 | struct ev_timer *w = t + i; |
|
|
1118 | ev_watcher_init (w, ocb, i); |
|
|
1119 | ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
1120 | ev_timer_start (w); |
|
|
1121 | if (drand48 () < 0.5) |
|
|
1122 | ev_timer_stop (w); |
|
|
1123 | } |
|
|
1124 | #endif |
|
|
1125 | |
|
|
1126 | struct ev_timer t1; |
|
|
1127 | ev_timer_init (&t1, ocb, 5, 10); |
|
|
1128 | ev_timer_start (&t1); |
|
|
1129 | |
|
|
1130 | struct ev_signal sig; |
|
|
1131 | ev_signal_init (&sig, scb, SIGQUIT); |
|
|
1132 | ev_signal_start (&sig); |
|
|
1133 | |
|
|
1134 | struct ev_check cw; |
|
|
1135 | ev_check_init (&cw, gcb); |
|
|
1136 | ev_check_start (&cw); |
|
|
1137 | |
|
|
1138 | struct ev_idle iw; |
|
|
1139 | ev_idle_init (&iw, gcb); |
|
|
1140 | ev_idle_start (&iw); |
|
|
1141 | |
|
|
1142 | ev_loop (0); |
|
|
1143 | |
|
|
1144 | return 0; |
|
|
1145 | } |
3030 | } |
1146 | |
3031 | |
|
|
3032 | #if EV_MULTIPLICITY |
|
|
3033 | #include "ev_wrap.h" |
1147 | #endif |
3034 | #endif |
1148 | |
3035 | |
|
|
3036 | #ifdef __cplusplus |
|
|
3037 | } |
|
|
3038 | #endif |
1149 | |
3039 | |
1150 | |
|
|
1151 | |
|
|