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 | # define WIN32_LEAN_AND_MEAN |
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160 | # include <windows.h> |
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161 | # ifndef EV_SELECT_IS_WINSOCKET |
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162 | # define EV_SELECT_IS_WINSOCKET 1 |
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163 | # endif |
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164 | #endif |
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165 | |
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166 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
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167 | |
51 | #ifndef EV_USE_MONOTONIC |
168 | #ifndef EV_USE_MONOTONIC |
52 | # define EV_USE_MONOTONIC 1 |
169 | # define EV_USE_MONOTONIC 0 |
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170 | #endif |
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171 | |
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172 | #ifndef EV_USE_REALTIME |
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173 | # define EV_USE_REALTIME 0 |
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174 | #endif |
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175 | |
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176 | #ifndef EV_USE_NANOSLEEP |
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177 | # define EV_USE_NANOSLEEP 0 |
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178 | #endif |
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179 | |
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180 | #ifndef EV_USE_SELECT |
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181 | # define EV_USE_SELECT 1 |
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182 | #endif |
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183 | |
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184 | #ifndef EV_USE_POLL |
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185 | # ifdef _WIN32 |
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186 | # define EV_USE_POLL 0 |
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187 | # else |
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188 | # define EV_USE_POLL 1 |
53 | #endif |
189 | # endif |
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190 | #endif |
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191 | |
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192 | #ifndef EV_USE_EPOLL |
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193 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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194 | # define EV_USE_EPOLL 1 |
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195 | # else |
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196 | # define EV_USE_EPOLL 0 |
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197 | # endif |
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198 | #endif |
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199 | |
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200 | #ifndef EV_USE_KQUEUE |
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201 | # define EV_USE_KQUEUE 0 |
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202 | #endif |
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203 | |
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204 | #ifndef EV_USE_PORT |
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205 | # define EV_USE_PORT 0 |
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206 | #endif |
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207 | |
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208 | #ifndef EV_USE_INOTIFY |
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209 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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210 | # define EV_USE_INOTIFY 1 |
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211 | # else |
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212 | # define EV_USE_INOTIFY 0 |
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213 | # endif |
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214 | #endif |
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215 | |
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216 | #ifndef EV_PID_HASHSIZE |
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217 | # if EV_MINIMAL |
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218 | # define EV_PID_HASHSIZE 1 |
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219 | # else |
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220 | # define EV_PID_HASHSIZE 16 |
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221 | # endif |
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222 | #endif |
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223 | |
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224 | #ifndef EV_INOTIFY_HASHSIZE |
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225 | # if EV_MINIMAL |
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226 | # define EV_INOTIFY_HASHSIZE 1 |
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227 | # else |
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228 | # define EV_INOTIFY_HASHSIZE 16 |
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229 | # endif |
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230 | #endif |
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231 | |
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232 | #ifndef EV_USE_EVENTFD |
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233 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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234 | # define EV_USE_EVENTFD 1 |
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235 | # else |
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236 | # define EV_USE_EVENTFD 0 |
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237 | # endif |
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238 | #endif |
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239 | |
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240 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
54 | |
241 | |
55 | #ifndef CLOCK_MONOTONIC |
242 | #ifndef CLOCK_MONOTONIC |
56 | # undef EV_USE_MONOTONIC |
243 | # undef EV_USE_MONOTONIC |
57 | # define EV_USE_MONOTONIC 0 |
244 | # define EV_USE_MONOTONIC 0 |
58 | #endif |
245 | #endif |
59 | |
246 | |
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 |
247 | #ifndef CLOCK_REALTIME |
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248 | # undef EV_USE_REALTIME |
69 | # define EV_USE_REALTIME 0 |
249 | # define EV_USE_REALTIME 0 |
70 | #endif |
250 | #endif |
71 | #ifndef EV_USE_REALTIME |
251 | |
72 | # define EV_USE_REALTIME 1 /* posix requirement, but might be slower */ |
252 | #if !EV_STAT_ENABLE |
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253 | # undef EV_USE_INOTIFY |
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254 | # define EV_USE_INOTIFY 0 |
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255 | #endif |
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256 | |
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257 | #if !EV_USE_NANOSLEEP |
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258 | # ifndef _WIN32 |
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259 | # include <sys/select.h> |
73 | #endif |
260 | # endif |
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261 | #endif |
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262 | |
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263 | #if EV_USE_INOTIFY |
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264 | # include <sys/inotify.h> |
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265 | #endif |
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266 | |
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267 | #if EV_SELECT_IS_WINSOCKET |
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268 | # include <winsock.h> |
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269 | #endif |
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270 | |
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271 | #if EV_USE_EVENTFD |
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272 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
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273 | # include <stdint.h> |
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274 | # ifdef __cplusplus |
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275 | extern "C" { |
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276 | # endif |
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277 | int eventfd (unsigned int initval, int flags); |
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278 | # ifdef __cplusplus |
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279 | } |
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280 | # endif |
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281 | #endif |
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282 | |
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283 | /**/ |
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284 | |
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285 | /* |
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286 | * This is used to avoid floating point rounding problems. |
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287 | * It is added to ev_rt_now when scheduling periodics |
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288 | * to ensure progress, time-wise, even when rounding |
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289 | * errors are against us. |
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290 | * This value is good at least till the year 4000. |
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291 | * Better solutions welcome. |
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292 | */ |
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293 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
74 | |
294 | |
75 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
295 | #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) */ |
296 | #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 */ |
297 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
79 | |
298 | |
80 | #include "ev.h" |
299 | #if __GNUC__ >= 4 |
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300 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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301 | # define noinline __attribute__ ((noinline)) |
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302 | #else |
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303 | # define expect(expr,value) (expr) |
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304 | # define noinline |
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305 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
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306 | # define inline |
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307 | # endif |
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308 | #endif |
81 | |
309 | |
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310 | #define expect_false(expr) expect ((expr) != 0, 0) |
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311 | #define expect_true(expr) expect ((expr) != 0, 1) |
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312 | #define inline_size static inline |
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313 | |
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314 | #if EV_MINIMAL |
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315 | # define inline_speed static noinline |
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316 | #else |
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317 | # define inline_speed static inline |
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318 | #endif |
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319 | |
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320 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
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321 | #define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
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322 | |
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323 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
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324 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
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325 | |
82 | typedef struct ev_watcher *W; |
326 | typedef ev_watcher *W; |
83 | typedef struct ev_watcher_list *WL; |
327 | typedef ev_watcher_list *WL; |
84 | typedef struct ev_watcher_time *WT; |
328 | typedef ev_watcher_time *WT; |
85 | |
329 | |
86 | static ev_tstamp now, diff; /* monotonic clock */ |
330 | #define ev_active(w) ((W)(w))->active |
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331 | #define ev_at(w) ((WT)(w))->at |
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332 | |
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333 | #if EV_USE_MONOTONIC |
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334 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
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335 | /* giving it a reasonably high chance of working on typical architetcures */ |
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336 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
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337 | #endif |
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338 | |
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339 | #ifdef _WIN32 |
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340 | # include "ev_win32.c" |
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341 | #endif |
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342 | |
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343 | /*****************************************************************************/ |
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344 | |
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345 | static void (*syserr_cb)(const char *msg); |
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346 | |
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347 | void |
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348 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
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349 | { |
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350 | syserr_cb = cb; |
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351 | } |
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352 | |
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353 | static void noinline |
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354 | syserr (const char *msg) |
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355 | { |
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356 | if (!msg) |
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357 | msg = "(libev) system error"; |
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358 | |
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359 | if (syserr_cb) |
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360 | syserr_cb (msg); |
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361 | else |
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362 | { |
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363 | perror (msg); |
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364 | abort (); |
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365 | } |
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366 | } |
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367 | |
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368 | static void * |
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369 | ev_realloc_emul (void *ptr, long size) |
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370 | { |
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371 | /* some systems, notably openbsd and darwin, fail to properly |
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372 | * implement realloc (x, 0) (as required by both ansi c-98 and |
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373 | * the single unix specification, so work around them here. |
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374 | */ |
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375 | |
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376 | if (size) |
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377 | return realloc (ptr, size); |
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378 | |
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379 | free (ptr); |
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380 | return 0; |
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381 | } |
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382 | |
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383 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
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384 | |
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385 | void |
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386 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
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387 | { |
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388 | alloc = cb; |
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389 | } |
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390 | |
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391 | inline_speed void * |
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392 | ev_realloc (void *ptr, long size) |
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393 | { |
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394 | ptr = alloc (ptr, size); |
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395 | |
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396 | if (!ptr && size) |
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397 | { |
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398 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
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399 | abort (); |
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400 | } |
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401 | |
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402 | return ptr; |
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403 | } |
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404 | |
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405 | #define ev_malloc(size) ev_realloc (0, (size)) |
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406 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
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407 | |
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408 | /*****************************************************************************/ |
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409 | |
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410 | typedef struct |
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411 | { |
|
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412 | WL head; |
|
|
413 | unsigned char events; |
|
|
414 | unsigned char reify; |
|
|
415 | #if EV_SELECT_IS_WINSOCKET |
|
|
416 | SOCKET handle; |
|
|
417 | #endif |
|
|
418 | } ANFD; |
|
|
419 | |
|
|
420 | typedef struct |
|
|
421 | { |
|
|
422 | W w; |
|
|
423 | int events; |
|
|
424 | } ANPENDING; |
|
|
425 | |
|
|
426 | #if EV_USE_INOTIFY |
|
|
427 | /* hash table entry per inotify-id */ |
|
|
428 | typedef struct |
|
|
429 | { |
|
|
430 | WL head; |
|
|
431 | } ANFS; |
|
|
432 | #endif |
|
|
433 | |
|
|
434 | /* Heap Entry */ |
|
|
435 | #if EV_HEAP_CACHE_AT |
|
|
436 | typedef struct { |
|
|
437 | WT w; |
|
|
438 | ev_tstamp at; |
|
|
439 | } ANHE; |
|
|
440 | |
|
|
441 | #define ANHE_w(he) (he) /* access watcher, read-write */ |
|
|
442 | #define ANHE_at(he) (he)->at /* acces cahced at, read-only */ |
|
|
443 | #define ANHE_at_set(he) (he)->at = (he)->w->at /* update at from watcher */ |
|
|
444 | #else |
|
|
445 | typedef WT ANHE; |
|
|
446 | |
|
|
447 | #define ANHE_w(he) (he) |
|
|
448 | #define ANHE_at(he) (he)->at |
|
|
449 | #define ANHE_at_set(he) |
|
|
450 | #endif |
|
|
451 | |
|
|
452 | #if EV_MULTIPLICITY |
|
|
453 | |
|
|
454 | struct ev_loop |
|
|
455 | { |
|
|
456 | ev_tstamp ev_rt_now; |
|
|
457 | #define ev_rt_now ((loop)->ev_rt_now) |
|
|
458 | #define VAR(name,decl) decl; |
|
|
459 | #include "ev_vars.h" |
|
|
460 | #undef VAR |
|
|
461 | }; |
|
|
462 | #include "ev_wrap.h" |
|
|
463 | |
|
|
464 | static struct ev_loop default_loop_struct; |
|
|
465 | struct ev_loop *ev_default_loop_ptr; |
|
|
466 | |
|
|
467 | #else |
|
|
468 | |
87 | ev_tstamp ev_now; |
469 | ev_tstamp ev_rt_now; |
88 | int ev_method; |
470 | #define VAR(name,decl) static decl; |
|
|
471 | #include "ev_vars.h" |
|
|
472 | #undef VAR |
89 | |
473 | |
90 | static int have_monotonic; /* runtime */ |
474 | static int ev_default_loop_ptr; |
91 | |
475 | |
92 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
476 | #endif |
93 | static void (*method_modify)(int fd, int oev, int nev); |
|
|
94 | static void (*method_poll)(ev_tstamp timeout); |
|
|
95 | |
477 | |
96 | /*****************************************************************************/ |
478 | /*****************************************************************************/ |
97 | |
479 | |
98 | ev_tstamp |
480 | ev_tstamp |
99 | ev_time (void) |
481 | ev_time (void) |
… | |
… | |
107 | gettimeofday (&tv, 0); |
489 | gettimeofday (&tv, 0); |
108 | return tv.tv_sec + tv.tv_usec * 1e-6; |
490 | return tv.tv_sec + tv.tv_usec * 1e-6; |
109 | #endif |
491 | #endif |
110 | } |
492 | } |
111 | |
493 | |
112 | static ev_tstamp |
494 | ev_tstamp inline_size |
113 | get_clock (void) |
495 | get_clock (void) |
114 | { |
496 | { |
115 | #if EV_USE_MONOTONIC |
497 | #if EV_USE_MONOTONIC |
116 | if (have_monotonic) |
498 | if (expect_true (have_monotonic)) |
117 | { |
499 | { |
118 | struct timespec ts; |
500 | struct timespec ts; |
119 | clock_gettime (CLOCK_MONOTONIC, &ts); |
501 | clock_gettime (CLOCK_MONOTONIC, &ts); |
120 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
502 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
121 | } |
503 | } |
122 | #endif |
504 | #endif |
123 | |
505 | |
124 | return ev_time (); |
506 | return ev_time (); |
125 | } |
507 | } |
126 | |
508 | |
127 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
509 | #if EV_MULTIPLICITY |
|
|
510 | ev_tstamp |
|
|
511 | ev_now (EV_P) |
|
|
512 | { |
|
|
513 | return ev_rt_now; |
|
|
514 | } |
|
|
515 | #endif |
128 | |
516 | |
129 | #define array_needsize(base,cur,cnt,init) \ |
517 | void |
130 | if ((cnt) > cur) \ |
518 | ev_sleep (ev_tstamp delay) |
131 | { \ |
519 | { |
132 | int newcnt = cur; \ |
520 | 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 | } |
521 | { |
|
|
522 | #if EV_USE_NANOSLEEP |
|
|
523 | struct timespec ts; |
|
|
524 | |
|
|
525 | ts.tv_sec = (time_t)delay; |
|
|
526 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
|
|
527 | |
|
|
528 | nanosleep (&ts, 0); |
|
|
529 | #elif defined(_WIN32) |
|
|
530 | Sleep ((unsigned long)(delay * 1e3)); |
|
|
531 | #else |
|
|
532 | struct timeval tv; |
|
|
533 | |
|
|
534 | tv.tv_sec = (time_t)delay; |
|
|
535 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
|
|
536 | |
|
|
537 | select (0, 0, 0, 0, &tv); |
|
|
538 | #endif |
|
|
539 | } |
|
|
540 | } |
143 | |
541 | |
144 | /*****************************************************************************/ |
542 | /*****************************************************************************/ |
145 | |
543 | |
146 | typedef struct |
544 | #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 | |
545 | |
153 | static ANFD *anfds; |
546 | int inline_size |
154 | static int anfdmax; |
547 | array_nextsize (int elem, int cur, int cnt) |
|
|
548 | { |
|
|
549 | int ncur = cur + 1; |
155 | |
550 | |
156 | static void |
551 | do |
|
|
552 | ncur <<= 1; |
|
|
553 | while (cnt > ncur); |
|
|
554 | |
|
|
555 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ |
|
|
556 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
|
|
557 | { |
|
|
558 | ncur *= elem; |
|
|
559 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
|
|
560 | ncur = ncur - sizeof (void *) * 4; |
|
|
561 | ncur /= elem; |
|
|
562 | } |
|
|
563 | |
|
|
564 | return ncur; |
|
|
565 | } |
|
|
566 | |
|
|
567 | static noinline void * |
|
|
568 | array_realloc (int elem, void *base, int *cur, int cnt) |
|
|
569 | { |
|
|
570 | *cur = array_nextsize (elem, *cur, cnt); |
|
|
571 | return ev_realloc (base, elem * *cur); |
|
|
572 | } |
|
|
573 | |
|
|
574 | #define array_needsize(type,base,cur,cnt,init) \ |
|
|
575 | if (expect_false ((cnt) > (cur))) \ |
|
|
576 | { \ |
|
|
577 | int ocur_ = (cur); \ |
|
|
578 | (base) = (type *)array_realloc \ |
|
|
579 | (sizeof (type), (base), &(cur), (cnt)); \ |
|
|
580 | init ((base) + (ocur_), (cur) - ocur_); \ |
|
|
581 | } |
|
|
582 | |
|
|
583 | #if 0 |
|
|
584 | #define array_slim(type,stem) \ |
|
|
585 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
|
|
586 | { \ |
|
|
587 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
|
|
588 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
|
|
589 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
|
|
590 | } |
|
|
591 | #endif |
|
|
592 | |
|
|
593 | #define array_free(stem, idx) \ |
|
|
594 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
|
|
595 | |
|
|
596 | /*****************************************************************************/ |
|
|
597 | |
|
|
598 | void noinline |
|
|
599 | ev_feed_event (EV_P_ void *w, int revents) |
|
|
600 | { |
|
|
601 | W w_ = (W)w; |
|
|
602 | int pri = ABSPRI (w_); |
|
|
603 | |
|
|
604 | if (expect_false (w_->pending)) |
|
|
605 | pendings [pri][w_->pending - 1].events |= revents; |
|
|
606 | else |
|
|
607 | { |
|
|
608 | w_->pending = ++pendingcnt [pri]; |
|
|
609 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
|
|
610 | pendings [pri][w_->pending - 1].w = w_; |
|
|
611 | pendings [pri][w_->pending - 1].events = revents; |
|
|
612 | } |
|
|
613 | } |
|
|
614 | |
|
|
615 | void inline_speed |
|
|
616 | queue_events (EV_P_ W *events, int eventcnt, int type) |
|
|
617 | { |
|
|
618 | int i; |
|
|
619 | |
|
|
620 | for (i = 0; i < eventcnt; ++i) |
|
|
621 | ev_feed_event (EV_A_ events [i], type); |
|
|
622 | } |
|
|
623 | |
|
|
624 | /*****************************************************************************/ |
|
|
625 | |
|
|
626 | void inline_size |
157 | anfds_init (ANFD *base, int count) |
627 | anfds_init (ANFD *base, int count) |
158 | { |
628 | { |
159 | while (count--) |
629 | while (count--) |
160 | { |
630 | { |
161 | base->head = 0; |
631 | base->head = 0; |
… | |
… | |
164 | |
634 | |
165 | ++base; |
635 | ++base; |
166 | } |
636 | } |
167 | } |
637 | } |
168 | |
638 | |
169 | typedef struct |
639 | 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) |
640 | fd_event (EV_P_ int fd, int revents) |
204 | { |
641 | { |
205 | ANFD *anfd = anfds + fd; |
642 | ANFD *anfd = anfds + fd; |
206 | struct ev_io *w; |
643 | ev_io *w; |
207 | |
644 | |
208 | for (w = anfd->head; w; w = w->next) |
645 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
209 | { |
646 | { |
210 | int ev = w->events & events; |
647 | int ev = w->events & revents; |
211 | |
648 | |
212 | if (ev) |
649 | if (ev) |
213 | event ((W)w, ev); |
650 | ev_feed_event (EV_A_ (W)w, ev); |
214 | } |
651 | } |
215 | } |
652 | } |
216 | |
653 | |
217 | /*****************************************************************************/ |
654 | void |
|
|
655 | ev_feed_fd_event (EV_P_ int fd, int revents) |
|
|
656 | { |
|
|
657 | if (fd >= 0 && fd < anfdmax) |
|
|
658 | fd_event (EV_A_ fd, revents); |
|
|
659 | } |
218 | |
660 | |
219 | static int *fdchanges; |
661 | void inline_size |
220 | static int fdchangemax, fdchangecnt; |
662 | fd_reify (EV_P) |
221 | |
|
|
222 | static void |
|
|
223 | fd_reify (void) |
|
|
224 | { |
663 | { |
225 | int i; |
664 | int i; |
226 | |
665 | |
227 | for (i = 0; i < fdchangecnt; ++i) |
666 | for (i = 0; i < fdchangecnt; ++i) |
228 | { |
667 | { |
229 | int fd = fdchanges [i]; |
668 | int fd = fdchanges [i]; |
230 | ANFD *anfd = anfds + fd; |
669 | ANFD *anfd = anfds + fd; |
231 | struct ev_io *w; |
670 | ev_io *w; |
232 | |
671 | |
233 | int events = 0; |
672 | unsigned char events = 0; |
234 | |
673 | |
235 | for (w = anfd->head; w; w = w->next) |
674 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
236 | events |= w->events; |
675 | events |= (unsigned char)w->events; |
237 | |
676 | |
238 | anfd->reify = 0; |
677 | #if EV_SELECT_IS_WINSOCKET |
239 | |
678 | if (events) |
240 | if (anfd->events != events) |
|
|
241 | { |
679 | { |
242 | method_modify (fd, anfd->events, events); |
680 | unsigned long argp; |
243 | anfd->events = events; |
681 | #ifdef EV_FD_TO_WIN32_HANDLE |
|
|
682 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
683 | #else |
|
|
684 | anfd->handle = _get_osfhandle (fd); |
|
|
685 | #endif |
|
|
686 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
244 | } |
687 | } |
|
|
688 | #endif |
|
|
689 | |
|
|
690 | { |
|
|
691 | unsigned char o_events = anfd->events; |
|
|
692 | unsigned char o_reify = anfd->reify; |
|
|
693 | |
|
|
694 | anfd->reify = 0; |
|
|
695 | anfd->events = events; |
|
|
696 | |
|
|
697 | if (o_events != events || o_reify & EV_IOFDSET) |
|
|
698 | backend_modify (EV_A_ fd, o_events, events); |
|
|
699 | } |
245 | } |
700 | } |
246 | |
701 | |
247 | fdchangecnt = 0; |
702 | fdchangecnt = 0; |
248 | } |
703 | } |
249 | |
704 | |
250 | static void |
705 | void inline_size |
251 | fd_change (int fd) |
706 | fd_change (EV_P_ int fd, int flags) |
252 | { |
707 | { |
253 | if (anfds [fd].reify || fdchangecnt < 0) |
708 | unsigned char reify = anfds [fd].reify; |
254 | return; |
|
|
255 | |
|
|
256 | anfds [fd].reify = 1; |
709 | anfds [fd].reify |= flags; |
257 | |
710 | |
|
|
711 | if (expect_true (!reify)) |
|
|
712 | { |
258 | ++fdchangecnt; |
713 | ++fdchangecnt; |
259 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
714 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
260 | fdchanges [fdchangecnt - 1] = fd; |
715 | fdchanges [fdchangecnt - 1] = fd; |
|
|
716 | } |
|
|
717 | } |
|
|
718 | |
|
|
719 | void inline_speed |
|
|
720 | fd_kill (EV_P_ int fd) |
|
|
721 | { |
|
|
722 | ev_io *w; |
|
|
723 | |
|
|
724 | while ((w = (ev_io *)anfds [fd].head)) |
|
|
725 | { |
|
|
726 | ev_io_stop (EV_A_ w); |
|
|
727 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
728 | } |
|
|
729 | } |
|
|
730 | |
|
|
731 | int inline_size |
|
|
732 | fd_valid (int fd) |
|
|
733 | { |
|
|
734 | #ifdef _WIN32 |
|
|
735 | return _get_osfhandle (fd) != -1; |
|
|
736 | #else |
|
|
737 | return fcntl (fd, F_GETFD) != -1; |
|
|
738 | #endif |
261 | } |
739 | } |
262 | |
740 | |
263 | /* called on EBADF to verify fds */ |
741 | /* called on EBADF to verify fds */ |
264 | static void |
742 | static void noinline |
265 | fd_recheck (void) |
743 | fd_ebadf (EV_P) |
266 | { |
744 | { |
267 | int fd; |
745 | int fd; |
268 | |
746 | |
269 | for (fd = 0; fd < anfdmax; ++fd) |
747 | for (fd = 0; fd < anfdmax; ++fd) |
270 | if (anfds [fd].events) |
748 | if (anfds [fd].events) |
271 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
749 | if (!fd_valid (fd) == -1 && errno == EBADF) |
272 | while (anfds [fd].head) |
750 | fd_kill (EV_A_ fd); |
|
|
751 | } |
|
|
752 | |
|
|
753 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
754 | static void noinline |
|
|
755 | fd_enomem (EV_P) |
|
|
756 | { |
|
|
757 | int fd; |
|
|
758 | |
|
|
759 | for (fd = anfdmax; fd--; ) |
|
|
760 | if (anfds [fd].events) |
273 | { |
761 | { |
274 | ev_io_stop (anfds [fd].head); |
762 | fd_kill (EV_A_ fd); |
275 | event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE); |
763 | return; |
276 | } |
764 | } |
|
|
765 | } |
|
|
766 | |
|
|
767 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
|
|
768 | static void noinline |
|
|
769 | fd_rearm_all (EV_P) |
|
|
770 | { |
|
|
771 | int fd; |
|
|
772 | |
|
|
773 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
774 | if (anfds [fd].events) |
|
|
775 | { |
|
|
776 | anfds [fd].events = 0; |
|
|
777 | fd_change (EV_A_ fd, EV_IOFDSET | 1); |
|
|
778 | } |
277 | } |
779 | } |
278 | |
780 | |
279 | /*****************************************************************************/ |
781 | /*****************************************************************************/ |
280 | |
782 | |
281 | static struct ev_timer **timers; |
783 | /* |
282 | static int timermax, timercnt; |
784 | * the heap functions want a real array index. array index 0 uis guaranteed to not |
|
|
785 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
|
|
786 | * the branching factor of the d-tree. |
|
|
787 | */ |
283 | |
788 | |
284 | static struct ev_periodic **periodics; |
789 | /* |
285 | static int periodicmax, periodiccnt; |
790 | * at the moment we allow libev the luxury of two heaps, |
|
|
791 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
|
|
792 | * which is more cache-efficient. |
|
|
793 | * the difference is about 5% with 50000+ watchers. |
|
|
794 | */ |
|
|
795 | #define EV_USE_4HEAP !EV_MINIMAL |
|
|
796 | #if EV_USE_4HEAP |
286 | |
797 | |
287 | static void |
798 | #define DHEAP 4 |
288 | upheap (WT *timers, int k) |
799 | #define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
289 | { |
|
|
290 | WT w = timers [k]; |
|
|
291 | |
800 | |
292 | while (k && timers [k >> 1]->at > w->at) |
801 | /* towards the root */ |
293 | { |
802 | void inline_speed |
294 | timers [k] = timers [k >> 1]; |
803 | upheap (ANHE *heap, int k) |
295 | timers [k]->active = k + 1; |
804 | { |
296 | k >>= 1; |
805 | ANHE he = heap [k]; |
|
|
806 | |
|
|
807 | for (;;) |
297 | } |
808 | { |
|
|
809 | int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0; |
298 | |
810 | |
299 | timers [k] = w; |
811 | if (p == k || ANHE_at (heap [p]) <= ANHE_at (he)) |
300 | timers [k]->active = k + 1; |
|
|
301 | |
|
|
302 | } |
|
|
303 | |
|
|
304 | static void |
|
|
305 | downheap (WT *timers, int N, int k) |
|
|
306 | { |
|
|
307 | WT w = timers [k]; |
|
|
308 | |
|
|
309 | while (k < (N >> 1)) |
|
|
310 | { |
|
|
311 | int j = k << 1; |
|
|
312 | |
|
|
313 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
|
|
314 | ++j; |
|
|
315 | |
|
|
316 | if (w->at <= timers [j]->at) |
|
|
317 | break; |
812 | break; |
318 | |
813 | |
319 | timers [k] = timers [j]; |
814 | heap [k] = heap [p]; |
320 | timers [k]->active = k + 1; |
815 | ev_active (ANHE_w (heap [k])) = k; |
321 | k = j; |
816 | k = p; |
|
|
817 | } |
|
|
818 | |
|
|
819 | ev_active (ANHE_w (he)) = k; |
|
|
820 | heap [k] = he; |
|
|
821 | } |
|
|
822 | |
|
|
823 | /* away from the root */ |
|
|
824 | void inline_speed |
|
|
825 | downheap (ANHE *heap, int N, int k) |
|
|
826 | { |
|
|
827 | ANHE he = heap [k]; |
|
|
828 | ANHE *E = heap + N + HEAP0; |
|
|
829 | |
|
|
830 | for (;;) |
322 | } |
831 | { |
|
|
832 | ev_tstamp minat; |
|
|
833 | ANHE *minpos; |
|
|
834 | ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0; |
323 | |
835 | |
|
|
836 | // find minimum child |
|
|
837 | if (expect_true (pos + DHEAP - 1 < E)) |
|
|
838 | { |
|
|
839 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
840 | if (ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
841 | if (ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
842 | if (ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
843 | } |
|
|
844 | else if (pos < E) |
|
|
845 | { |
|
|
846 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
847 | if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
848 | if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
849 | if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
850 | } |
|
|
851 | else |
|
|
852 | break; |
|
|
853 | |
|
|
854 | if (ANHE_at (he) <= minat) |
|
|
855 | break; |
|
|
856 | |
|
|
857 | ev_active (ANHE_w (*minpos)) = k; |
|
|
858 | heap [k] = *minpos; |
|
|
859 | |
|
|
860 | k = minpos - heap; |
|
|
861 | } |
|
|
862 | |
|
|
863 | ev_active (ANHE_w (he)) = k; |
|
|
864 | heap [k] = he; |
|
|
865 | } |
|
|
866 | |
|
|
867 | #else // 4HEAP |
|
|
868 | |
|
|
869 | #define HEAP0 1 |
|
|
870 | |
|
|
871 | /* towards the root */ |
|
|
872 | void inline_speed |
|
|
873 | upheap (ANHE *heap, int k) |
|
|
874 | { |
|
|
875 | ANHE he = heap [k]; |
|
|
876 | |
|
|
877 | for (;;) |
|
|
878 | { |
|
|
879 | int p = k >> 1; |
|
|
880 | |
|
|
881 | /* maybe we could use a dummy element at heap [0]? */ |
|
|
882 | if (!p || ANHE_at (heap [p]) <= ANHE_at (he)) |
|
|
883 | break; |
|
|
884 | |
|
|
885 | heap [k] = heap [p]; |
|
|
886 | ev_active (ANHE_w (heap [k])) = k; |
|
|
887 | k = p; |
|
|
888 | } |
|
|
889 | |
324 | timers [k] = w; |
890 | heap [k] = w; |
325 | timers [k]->active = k + 1; |
891 | ev_active (ANHE_w (heap [k])) = k; |
|
|
892 | } |
|
|
893 | |
|
|
894 | /* away from the root */ |
|
|
895 | void inline_speed |
|
|
896 | downheap (ANHE *heap, int N, int k) |
|
|
897 | { |
|
|
898 | ANHE he = heap [k]; |
|
|
899 | |
|
|
900 | for (;;) |
|
|
901 | { |
|
|
902 | int c = k << 1; |
|
|
903 | |
|
|
904 | if (c > N) |
|
|
905 | break; |
|
|
906 | |
|
|
907 | c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
|
|
908 | ? 1 : 0; |
|
|
909 | |
|
|
910 | if (w->at <= ANHE_at (heap [c])) |
|
|
911 | break; |
|
|
912 | |
|
|
913 | heap [k] = heap [c]; |
|
|
914 | ev_active (ANHE_w (heap [k])) = k; |
|
|
915 | |
|
|
916 | k = c; |
|
|
917 | } |
|
|
918 | |
|
|
919 | heap [k] = he; |
|
|
920 | ev_active (ANHE_w (he)) = k; |
|
|
921 | } |
|
|
922 | #endif |
|
|
923 | |
|
|
924 | void inline_size |
|
|
925 | adjustheap (ANHE *heap, int N, int k) |
|
|
926 | { |
|
|
927 | upheap (heap, k); |
|
|
928 | downheap (heap, N, k); |
326 | } |
929 | } |
327 | |
930 | |
328 | /*****************************************************************************/ |
931 | /*****************************************************************************/ |
329 | |
932 | |
330 | typedef struct |
933 | typedef struct |
331 | { |
934 | { |
332 | struct ev_signal *head; |
935 | WL head; |
333 | sig_atomic_t volatile gotsig; |
936 | EV_ATOMIC_T gotsig; |
334 | } ANSIG; |
937 | } ANSIG; |
335 | |
938 | |
336 | static ANSIG *signals; |
939 | static ANSIG *signals; |
337 | static int signalmax; |
940 | static int signalmax; |
338 | |
941 | |
339 | static int sigpipe [2]; |
942 | static EV_ATOMIC_T gotsig; |
340 | static sig_atomic_t volatile gotsig; |
|
|
341 | static struct ev_io sigev; |
|
|
342 | |
943 | |
343 | static void |
944 | void inline_size |
344 | signals_init (ANSIG *base, int count) |
945 | signals_init (ANSIG *base, int count) |
345 | { |
946 | { |
346 | while (count--) |
947 | while (count--) |
347 | { |
948 | { |
348 | base->head = 0; |
949 | base->head = 0; |
… | |
… | |
350 | |
951 | |
351 | ++base; |
952 | ++base; |
352 | } |
953 | } |
353 | } |
954 | } |
354 | |
955 | |
|
|
956 | /*****************************************************************************/ |
|
|
957 | |
|
|
958 | void inline_speed |
|
|
959 | fd_intern (int fd) |
|
|
960 | { |
|
|
961 | #ifdef _WIN32 |
|
|
962 | int arg = 1; |
|
|
963 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
964 | #else |
|
|
965 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
966 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
967 | #endif |
|
|
968 | } |
|
|
969 | |
|
|
970 | static void noinline |
|
|
971 | evpipe_init (EV_P) |
|
|
972 | { |
|
|
973 | if (!ev_is_active (&pipeev)) |
|
|
974 | { |
|
|
975 | #if EV_USE_EVENTFD |
|
|
976 | if ((evfd = eventfd (0, 0)) >= 0) |
|
|
977 | { |
|
|
978 | evpipe [0] = -1; |
|
|
979 | fd_intern (evfd); |
|
|
980 | ev_io_set (&pipeev, evfd, EV_READ); |
|
|
981 | } |
|
|
982 | else |
|
|
983 | #endif |
|
|
984 | { |
|
|
985 | while (pipe (evpipe)) |
|
|
986 | syserr ("(libev) error creating signal/async pipe"); |
|
|
987 | |
|
|
988 | fd_intern (evpipe [0]); |
|
|
989 | fd_intern (evpipe [1]); |
|
|
990 | ev_io_set (&pipeev, evpipe [0], EV_READ); |
|
|
991 | } |
|
|
992 | |
|
|
993 | ev_io_start (EV_A_ &pipeev); |
|
|
994 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
995 | } |
|
|
996 | } |
|
|
997 | |
|
|
998 | void inline_size |
|
|
999 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
1000 | { |
|
|
1001 | if (!*flag) |
|
|
1002 | { |
|
|
1003 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
1004 | |
|
|
1005 | *flag = 1; |
|
|
1006 | |
|
|
1007 | #if EV_USE_EVENTFD |
|
|
1008 | if (evfd >= 0) |
|
|
1009 | { |
|
|
1010 | uint64_t counter = 1; |
|
|
1011 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
1012 | } |
|
|
1013 | else |
|
|
1014 | #endif |
|
|
1015 | write (evpipe [1], &old_errno, 1); |
|
|
1016 | |
|
|
1017 | errno = old_errno; |
|
|
1018 | } |
|
|
1019 | } |
|
|
1020 | |
355 | static void |
1021 | static void |
|
|
1022 | pipecb (EV_P_ ev_io *iow, int revents) |
|
|
1023 | { |
|
|
1024 | #if EV_USE_EVENTFD |
|
|
1025 | if (evfd >= 0) |
|
|
1026 | { |
|
|
1027 | uint64_t counter; |
|
|
1028 | read (evfd, &counter, sizeof (uint64_t)); |
|
|
1029 | } |
|
|
1030 | else |
|
|
1031 | #endif |
|
|
1032 | { |
|
|
1033 | char dummy; |
|
|
1034 | read (evpipe [0], &dummy, 1); |
|
|
1035 | } |
|
|
1036 | |
|
|
1037 | if (gotsig && ev_is_default_loop (EV_A)) |
|
|
1038 | { |
|
|
1039 | int signum; |
|
|
1040 | gotsig = 0; |
|
|
1041 | |
|
|
1042 | for (signum = signalmax; signum--; ) |
|
|
1043 | if (signals [signum].gotsig) |
|
|
1044 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
1045 | } |
|
|
1046 | |
|
|
1047 | #if EV_ASYNC_ENABLE |
|
|
1048 | if (gotasync) |
|
|
1049 | { |
|
|
1050 | int i; |
|
|
1051 | gotasync = 0; |
|
|
1052 | |
|
|
1053 | for (i = asynccnt; i--; ) |
|
|
1054 | if (asyncs [i]->sent) |
|
|
1055 | { |
|
|
1056 | asyncs [i]->sent = 0; |
|
|
1057 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
1058 | } |
|
|
1059 | } |
|
|
1060 | #endif |
|
|
1061 | } |
|
|
1062 | |
|
|
1063 | /*****************************************************************************/ |
|
|
1064 | |
|
|
1065 | static void |
356 | sighandler (int signum) |
1066 | ev_sighandler (int signum) |
357 | { |
1067 | { |
|
|
1068 | #if EV_MULTIPLICITY |
|
|
1069 | struct ev_loop *loop = &default_loop_struct; |
|
|
1070 | #endif |
|
|
1071 | |
|
|
1072 | #if _WIN32 |
|
|
1073 | signal (signum, ev_sighandler); |
|
|
1074 | #endif |
|
|
1075 | |
358 | signals [signum - 1].gotsig = 1; |
1076 | signals [signum - 1].gotsig = 1; |
359 | |
1077 | evpipe_write (EV_A_ &gotsig); |
360 | if (!gotsig) |
|
|
361 | { |
|
|
362 | gotsig = 1; |
|
|
363 | write (sigpipe [1], &signum, 1); |
|
|
364 | } |
|
|
365 | } |
1078 | } |
366 | |
1079 | |
367 | static void |
1080 | void noinline |
368 | sigcb (struct ev_io *iow, int revents) |
1081 | ev_feed_signal_event (EV_P_ int signum) |
369 | { |
1082 | { |
370 | struct ev_signal *w; |
1083 | WL w; |
371 | int sig; |
|
|
372 | |
1084 | |
373 | read (sigpipe [0], &revents, 1); |
1085 | #if EV_MULTIPLICITY |
374 | gotsig = 0; |
1086 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1087 | #endif |
375 | |
1088 | |
376 | for (sig = signalmax; sig--; ) |
1089 | --signum; |
377 | if (signals [sig].gotsig) |
1090 | |
378 | { |
1091 | if (signum < 0 || signum >= signalmax) |
|
|
1092 | return; |
|
|
1093 | |
379 | signals [sig].gotsig = 0; |
1094 | signals [signum].gotsig = 0; |
380 | |
1095 | |
381 | for (w = signals [sig].head; w; w = w->next) |
1096 | for (w = signals [signum].head; w; w = w->next) |
382 | event ((W)w, EV_SIGNAL); |
1097 | 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 | } |
1098 | } |
399 | |
1099 | |
400 | /*****************************************************************************/ |
1100 | /*****************************************************************************/ |
401 | |
1101 | |
402 | static struct ev_idle **idles; |
1102 | static WL childs [EV_PID_HASHSIZE]; |
403 | static int idlemax, idlecnt; |
|
|
404 | |
1103 | |
405 | static struct ev_prepare **prepares; |
1104 | #ifndef _WIN32 |
406 | static int preparemax, preparecnt; |
|
|
407 | |
1105 | |
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; |
1106 | static ev_signal childev; |
|
|
1107 | |
|
|
1108 | #ifndef WIFCONTINUED |
|
|
1109 | # define WIFCONTINUED(status) 0 |
|
|
1110 | #endif |
|
|
1111 | |
|
|
1112 | void inline_speed |
|
|
1113 | child_reap (EV_P_ int chain, int pid, int status) |
|
|
1114 | { |
|
|
1115 | ev_child *w; |
|
|
1116 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
|
|
1117 | |
|
|
1118 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1119 | { |
|
|
1120 | if ((w->pid == pid || !w->pid) |
|
|
1121 | && (!traced || (w->flags & 1))) |
|
|
1122 | { |
|
|
1123 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
|
|
1124 | w->rpid = pid; |
|
|
1125 | w->rstatus = status; |
|
|
1126 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
1127 | } |
|
|
1128 | } |
|
|
1129 | } |
415 | |
1130 | |
416 | #ifndef WCONTINUED |
1131 | #ifndef WCONTINUED |
417 | # define WCONTINUED 0 |
1132 | # define WCONTINUED 0 |
418 | #endif |
1133 | #endif |
419 | |
1134 | |
420 | static void |
1135 | static void |
421 | childcb (struct ev_signal *sw, int revents) |
1136 | childcb (EV_P_ ev_signal *sw, int revents) |
422 | { |
1137 | { |
423 | struct ev_child *w; |
|
|
424 | int pid, status; |
1138 | int pid, status; |
425 | |
1139 | |
|
|
1140 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
426 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
1141 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
427 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
1142 | if (!WCONTINUED |
428 | if (w->pid == pid || w->pid == -1) |
1143 | || errno != EINVAL |
429 | { |
1144 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
430 | w->status = status; |
1145 | return; |
431 | event ((W)w, EV_CHILD); |
1146 | |
432 | } |
1147 | /* make sure we are called again until all children have been reaped */ |
|
|
1148 | /* we need to do it this way so that the callback gets called before we continue */ |
|
|
1149 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
1150 | |
|
|
1151 | child_reap (EV_A_ pid, pid, status); |
|
|
1152 | if (EV_PID_HASHSIZE > 1) |
|
|
1153 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
433 | } |
1154 | } |
|
|
1155 | |
|
|
1156 | #endif |
434 | |
1157 | |
435 | /*****************************************************************************/ |
1158 | /*****************************************************************************/ |
436 | |
1159 | |
|
|
1160 | #if EV_USE_PORT |
|
|
1161 | # include "ev_port.c" |
|
|
1162 | #endif |
|
|
1163 | #if EV_USE_KQUEUE |
|
|
1164 | # include "ev_kqueue.c" |
|
|
1165 | #endif |
437 | #if EV_USE_EPOLL |
1166 | #if EV_USE_EPOLL |
438 | # include "ev_epoll.c" |
1167 | # include "ev_epoll.c" |
439 | #endif |
1168 | #endif |
|
|
1169 | #if EV_USE_POLL |
|
|
1170 | # include "ev_poll.c" |
|
|
1171 | #endif |
440 | #if EV_USE_SELECT |
1172 | #if EV_USE_SELECT |
441 | # include "ev_select.c" |
1173 | # include "ev_select.c" |
442 | #endif |
1174 | #endif |
443 | |
1175 | |
444 | int |
1176 | int |
… | |
… | |
451 | ev_version_minor (void) |
1183 | ev_version_minor (void) |
452 | { |
1184 | { |
453 | return EV_VERSION_MINOR; |
1185 | return EV_VERSION_MINOR; |
454 | } |
1186 | } |
455 | |
1187 | |
456 | int ev_init (int flags) |
1188 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
1189 | int inline_size |
|
|
1190 | enable_secure (void) |
457 | { |
1191 | { |
458 | if (!ev_method) |
1192 | #ifdef _WIN32 |
|
|
1193 | return 0; |
|
|
1194 | #else |
|
|
1195 | return getuid () != geteuid () |
|
|
1196 | || getgid () != getegid (); |
|
|
1197 | #endif |
|
|
1198 | } |
|
|
1199 | |
|
|
1200 | unsigned int |
|
|
1201 | ev_supported_backends (void) |
|
|
1202 | { |
|
|
1203 | unsigned int flags = 0; |
|
|
1204 | |
|
|
1205 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
1206 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
1207 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
1208 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
1209 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
1210 | |
|
|
1211 | return flags; |
|
|
1212 | } |
|
|
1213 | |
|
|
1214 | unsigned int |
|
|
1215 | ev_recommended_backends (void) |
|
|
1216 | { |
|
|
1217 | unsigned int flags = ev_supported_backends (); |
|
|
1218 | |
|
|
1219 | #ifndef __NetBSD__ |
|
|
1220 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
1221 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
1222 | flags &= ~EVBACKEND_KQUEUE; |
|
|
1223 | #endif |
|
|
1224 | #ifdef __APPLE__ |
|
|
1225 | // flags &= ~EVBACKEND_KQUEUE; for documentation |
|
|
1226 | flags &= ~EVBACKEND_POLL; |
|
|
1227 | #endif |
|
|
1228 | |
|
|
1229 | return flags; |
|
|
1230 | } |
|
|
1231 | |
|
|
1232 | unsigned int |
|
|
1233 | ev_embeddable_backends (void) |
|
|
1234 | { |
|
|
1235 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
|
|
1236 | |
|
|
1237 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
1238 | /* please fix it and tell me how to detect the fix */ |
|
|
1239 | flags &= ~EVBACKEND_EPOLL; |
|
|
1240 | |
|
|
1241 | return flags; |
|
|
1242 | } |
|
|
1243 | |
|
|
1244 | unsigned int |
|
|
1245 | ev_backend (EV_P) |
|
|
1246 | { |
|
|
1247 | return backend; |
|
|
1248 | } |
|
|
1249 | |
|
|
1250 | unsigned int |
|
|
1251 | ev_loop_count (EV_P) |
|
|
1252 | { |
|
|
1253 | return loop_count; |
|
|
1254 | } |
|
|
1255 | |
|
|
1256 | void |
|
|
1257 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1258 | { |
|
|
1259 | io_blocktime = interval; |
|
|
1260 | } |
|
|
1261 | |
|
|
1262 | void |
|
|
1263 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1264 | { |
|
|
1265 | timeout_blocktime = interval; |
|
|
1266 | } |
|
|
1267 | |
|
|
1268 | static void noinline |
|
|
1269 | loop_init (EV_P_ unsigned int flags) |
|
|
1270 | { |
|
|
1271 | if (!backend) |
459 | { |
1272 | { |
460 | #if EV_USE_MONOTONIC |
1273 | #if EV_USE_MONOTONIC |
461 | { |
1274 | { |
462 | struct timespec ts; |
1275 | struct timespec ts; |
463 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1276 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
464 | have_monotonic = 1; |
1277 | have_monotonic = 1; |
465 | } |
1278 | } |
466 | #endif |
1279 | #endif |
467 | |
1280 | |
468 | ev_now = ev_time (); |
1281 | ev_rt_now = ev_time (); |
469 | now = get_clock (); |
1282 | mn_now = get_clock (); |
|
|
1283 | now_floor = mn_now; |
470 | diff = ev_now - now; |
1284 | rtmn_diff = ev_rt_now - mn_now; |
471 | |
1285 | |
472 | if (pipe (sigpipe)) |
1286 | io_blocktime = 0.; |
473 | return 0; |
1287 | timeout_blocktime = 0.; |
|
|
1288 | backend = 0; |
|
|
1289 | backend_fd = -1; |
|
|
1290 | gotasync = 0; |
|
|
1291 | #if EV_USE_INOTIFY |
|
|
1292 | fs_fd = -2; |
|
|
1293 | #endif |
474 | |
1294 | |
475 | ev_method = EVMETHOD_NONE; |
1295 | /* pid check not overridable via env */ |
|
|
1296 | #ifndef _WIN32 |
|
|
1297 | if (flags & EVFLAG_FORKCHECK) |
|
|
1298 | curpid = getpid (); |
|
|
1299 | #endif |
|
|
1300 | |
|
|
1301 | if (!(flags & EVFLAG_NOENV) |
|
|
1302 | && !enable_secure () |
|
|
1303 | && getenv ("LIBEV_FLAGS")) |
|
|
1304 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
1305 | |
|
|
1306 | if (!(flags & 0x0000ffffU)) |
|
|
1307 | flags |= ev_recommended_backends (); |
|
|
1308 | |
|
|
1309 | #if EV_USE_PORT |
|
|
1310 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
1311 | #endif |
|
|
1312 | #if EV_USE_KQUEUE |
|
|
1313 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
1314 | #endif |
476 | #if EV_USE_EPOLL |
1315 | #if EV_USE_EPOLL |
477 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
1316 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
|
|
1317 | #endif |
|
|
1318 | #if EV_USE_POLL |
|
|
1319 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
478 | #endif |
1320 | #endif |
479 | #if EV_USE_SELECT |
1321 | #if EV_USE_SELECT |
480 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
1322 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
481 | #endif |
1323 | #endif |
482 | |
1324 | |
483 | if (ev_method) |
1325 | ev_init (&pipeev, pipecb); |
|
|
1326 | ev_set_priority (&pipeev, EV_MAXPRI); |
|
|
1327 | } |
|
|
1328 | } |
|
|
1329 | |
|
|
1330 | static void noinline |
|
|
1331 | loop_destroy (EV_P) |
|
|
1332 | { |
|
|
1333 | int i; |
|
|
1334 | |
|
|
1335 | if (ev_is_active (&pipeev)) |
|
|
1336 | { |
|
|
1337 | ev_ref (EV_A); /* signal watcher */ |
|
|
1338 | ev_io_stop (EV_A_ &pipeev); |
|
|
1339 | |
|
|
1340 | #if EV_USE_EVENTFD |
|
|
1341 | if (evfd >= 0) |
|
|
1342 | close (evfd); |
|
|
1343 | #endif |
|
|
1344 | |
|
|
1345 | if (evpipe [0] >= 0) |
484 | { |
1346 | { |
485 | ev_watcher_init (&sigev, sigcb); |
1347 | close (evpipe [0]); |
486 | siginit (); |
1348 | close (evpipe [1]); |
|
|
1349 | } |
|
|
1350 | } |
487 | |
1351 | |
|
|
1352 | #if EV_USE_INOTIFY |
|
|
1353 | if (fs_fd >= 0) |
|
|
1354 | close (fs_fd); |
|
|
1355 | #endif |
|
|
1356 | |
|
|
1357 | if (backend_fd >= 0) |
|
|
1358 | close (backend_fd); |
|
|
1359 | |
|
|
1360 | #if EV_USE_PORT |
|
|
1361 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
1362 | #endif |
|
|
1363 | #if EV_USE_KQUEUE |
|
|
1364 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
1365 | #endif |
|
|
1366 | #if EV_USE_EPOLL |
|
|
1367 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
1368 | #endif |
|
|
1369 | #if EV_USE_POLL |
|
|
1370 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
1371 | #endif |
|
|
1372 | #if EV_USE_SELECT |
|
|
1373 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
1374 | #endif |
|
|
1375 | |
|
|
1376 | for (i = NUMPRI; i--; ) |
|
|
1377 | { |
|
|
1378 | array_free (pending, [i]); |
|
|
1379 | #if EV_IDLE_ENABLE |
|
|
1380 | array_free (idle, [i]); |
|
|
1381 | #endif |
|
|
1382 | } |
|
|
1383 | |
|
|
1384 | ev_free (anfds); anfdmax = 0; |
|
|
1385 | |
|
|
1386 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
1387 | array_free (fdchange, EMPTY); |
|
|
1388 | array_free (timer, EMPTY); |
|
|
1389 | #if EV_PERIODIC_ENABLE |
|
|
1390 | array_free (periodic, EMPTY); |
|
|
1391 | #endif |
|
|
1392 | #if EV_FORK_ENABLE |
|
|
1393 | array_free (fork, EMPTY); |
|
|
1394 | #endif |
|
|
1395 | array_free (prepare, EMPTY); |
|
|
1396 | array_free (check, EMPTY); |
|
|
1397 | #if EV_ASYNC_ENABLE |
|
|
1398 | array_free (async, EMPTY); |
|
|
1399 | #endif |
|
|
1400 | |
|
|
1401 | backend = 0; |
|
|
1402 | } |
|
|
1403 | |
|
|
1404 | #if EV_USE_INOTIFY |
|
|
1405 | void inline_size infy_fork (EV_P); |
|
|
1406 | #endif |
|
|
1407 | |
|
|
1408 | void inline_size |
|
|
1409 | loop_fork (EV_P) |
|
|
1410 | { |
|
|
1411 | #if EV_USE_PORT |
|
|
1412 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
1413 | #endif |
|
|
1414 | #if EV_USE_KQUEUE |
|
|
1415 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
1416 | #endif |
|
|
1417 | #if EV_USE_EPOLL |
|
|
1418 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
1419 | #endif |
|
|
1420 | #if EV_USE_INOTIFY |
|
|
1421 | infy_fork (EV_A); |
|
|
1422 | #endif |
|
|
1423 | |
|
|
1424 | if (ev_is_active (&pipeev)) |
|
|
1425 | { |
|
|
1426 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1427 | /* while we modify the fd vars */ |
|
|
1428 | gotsig = 1; |
|
|
1429 | #if EV_ASYNC_ENABLE |
|
|
1430 | gotasync = 1; |
|
|
1431 | #endif |
|
|
1432 | |
|
|
1433 | ev_ref (EV_A); |
|
|
1434 | ev_io_stop (EV_A_ &pipeev); |
|
|
1435 | |
|
|
1436 | #if EV_USE_EVENTFD |
|
|
1437 | if (evfd >= 0) |
|
|
1438 | close (evfd); |
|
|
1439 | #endif |
|
|
1440 | |
|
|
1441 | if (evpipe [0] >= 0) |
|
|
1442 | { |
|
|
1443 | close (evpipe [0]); |
|
|
1444 | close (evpipe [1]); |
|
|
1445 | } |
|
|
1446 | |
|
|
1447 | evpipe_init (EV_A); |
|
|
1448 | /* now iterate over everything, in case we missed something */ |
|
|
1449 | pipecb (EV_A_ &pipeev, EV_READ); |
|
|
1450 | } |
|
|
1451 | |
|
|
1452 | postfork = 0; |
|
|
1453 | } |
|
|
1454 | |
|
|
1455 | #if EV_MULTIPLICITY |
|
|
1456 | struct ev_loop * |
|
|
1457 | ev_loop_new (unsigned int flags) |
|
|
1458 | { |
|
|
1459 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
1460 | |
|
|
1461 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
1462 | |
|
|
1463 | loop_init (EV_A_ flags); |
|
|
1464 | |
|
|
1465 | if (ev_backend (EV_A)) |
|
|
1466 | return loop; |
|
|
1467 | |
|
|
1468 | return 0; |
|
|
1469 | } |
|
|
1470 | |
|
|
1471 | void |
|
|
1472 | ev_loop_destroy (EV_P) |
|
|
1473 | { |
|
|
1474 | loop_destroy (EV_A); |
|
|
1475 | ev_free (loop); |
|
|
1476 | } |
|
|
1477 | |
|
|
1478 | void |
|
|
1479 | ev_loop_fork (EV_P) |
|
|
1480 | { |
|
|
1481 | postfork = 1; /* must be in line with ev_default_fork */ |
|
|
1482 | } |
|
|
1483 | #endif |
|
|
1484 | |
|
|
1485 | #if EV_MULTIPLICITY |
|
|
1486 | struct ev_loop * |
|
|
1487 | ev_default_loop_init (unsigned int flags) |
|
|
1488 | #else |
|
|
1489 | int |
|
|
1490 | ev_default_loop (unsigned int flags) |
|
|
1491 | #endif |
|
|
1492 | { |
|
|
1493 | if (!ev_default_loop_ptr) |
|
|
1494 | { |
|
|
1495 | #if EV_MULTIPLICITY |
|
|
1496 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
|
|
1497 | #else |
|
|
1498 | ev_default_loop_ptr = 1; |
|
|
1499 | #endif |
|
|
1500 | |
|
|
1501 | loop_init (EV_A_ flags); |
|
|
1502 | |
|
|
1503 | if (ev_backend (EV_A)) |
|
|
1504 | { |
|
|
1505 | #ifndef _WIN32 |
488 | ev_signal_init (&childev, childcb, SIGCHLD); |
1506 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
1507 | ev_set_priority (&childev, EV_MAXPRI); |
489 | ev_signal_start (&childev); |
1508 | ev_signal_start (EV_A_ &childev); |
|
|
1509 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
1510 | #endif |
490 | } |
1511 | } |
|
|
1512 | else |
|
|
1513 | ev_default_loop_ptr = 0; |
491 | } |
1514 | } |
492 | |
1515 | |
493 | return ev_method; |
1516 | return ev_default_loop_ptr; |
|
|
1517 | } |
|
|
1518 | |
|
|
1519 | void |
|
|
1520 | ev_default_destroy (void) |
|
|
1521 | { |
|
|
1522 | #if EV_MULTIPLICITY |
|
|
1523 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1524 | #endif |
|
|
1525 | |
|
|
1526 | #ifndef _WIN32 |
|
|
1527 | ev_ref (EV_A); /* child watcher */ |
|
|
1528 | ev_signal_stop (EV_A_ &childev); |
|
|
1529 | #endif |
|
|
1530 | |
|
|
1531 | loop_destroy (EV_A); |
|
|
1532 | } |
|
|
1533 | |
|
|
1534 | void |
|
|
1535 | ev_default_fork (void) |
|
|
1536 | { |
|
|
1537 | #if EV_MULTIPLICITY |
|
|
1538 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1539 | #endif |
|
|
1540 | |
|
|
1541 | if (backend) |
|
|
1542 | postfork = 1; /* must be in line with ev_loop_fork */ |
494 | } |
1543 | } |
495 | |
1544 | |
496 | /*****************************************************************************/ |
1545 | /*****************************************************************************/ |
497 | |
1546 | |
498 | void |
1547 | void |
499 | ev_fork_prepare (void) |
1548 | ev_invoke (EV_P_ void *w, int revents) |
500 | { |
1549 | { |
501 | /* nop */ |
1550 | EV_CB_INVOKE ((W)w, revents); |
502 | } |
1551 | } |
503 | |
1552 | |
504 | void |
1553 | 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) |
1554 | call_pending (EV_P) |
529 | { |
1555 | { |
|
|
1556 | int pri; |
|
|
1557 | |
|
|
1558 | for (pri = NUMPRI; pri--; ) |
530 | while (pendingcnt) |
1559 | while (pendingcnt [pri]) |
531 | { |
1560 | { |
532 | ANPENDING *p = pendings + --pendingcnt; |
1561 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
533 | |
1562 | |
534 | if (p->w) |
1563 | if (expect_true (p->w)) |
|
|
1564 | { |
|
|
1565 | /*assert (("non-pending watcher on pending list", p->w->pending));*/ |
|
|
1566 | |
|
|
1567 | p->w->pending = 0; |
|
|
1568 | EV_CB_INVOKE (p->w, p->events); |
|
|
1569 | } |
|
|
1570 | } |
|
|
1571 | } |
|
|
1572 | |
|
|
1573 | #if EV_IDLE_ENABLE |
|
|
1574 | void inline_size |
|
|
1575 | idle_reify (EV_P) |
|
|
1576 | { |
|
|
1577 | if (expect_false (idleall)) |
|
|
1578 | { |
|
|
1579 | int pri; |
|
|
1580 | |
|
|
1581 | for (pri = NUMPRI; pri--; ) |
535 | { |
1582 | { |
536 | p->w->pending = 0; |
1583 | if (pendingcnt [pri]) |
537 | p->w->cb (p->w, p->events); |
1584 | break; |
|
|
1585 | |
|
|
1586 | if (idlecnt [pri]) |
|
|
1587 | { |
|
|
1588 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
|
|
1589 | break; |
|
|
1590 | } |
538 | } |
1591 | } |
539 | } |
1592 | } |
540 | } |
1593 | } |
|
|
1594 | #endif |
541 | |
1595 | |
542 | static void |
1596 | void inline_size |
543 | timers_reify (void) |
1597 | timers_reify (EV_P) |
544 | { |
1598 | { |
545 | while (timercnt && timers [0]->at <= now) |
1599 | while (timercnt && ANHE_at (timers [HEAP0]) <= mn_now) |
546 | { |
1600 | { |
547 | struct ev_timer *w = timers [0]; |
1601 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
|
|
1602 | |
|
|
1603 | /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ |
548 | |
1604 | |
549 | /* first reschedule or stop timer */ |
1605 | /* first reschedule or stop timer */ |
550 | if (w->repeat) |
1606 | if (w->repeat) |
551 | { |
1607 | { |
552 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
1608 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
553 | w->at = now + w->repeat; |
1609 | |
|
|
1610 | ev_at (w) += w->repeat; |
|
|
1611 | if (ev_at (w) < mn_now) |
|
|
1612 | ev_at (w) = mn_now; |
|
|
1613 | |
554 | downheap ((WT *)timers, timercnt, 0); |
1614 | downheap (timers, timercnt, HEAP0); |
555 | } |
1615 | } |
556 | else |
1616 | else |
557 | ev_timer_stop (w); /* nonrepeating: stop timer */ |
1617 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
558 | |
1618 | |
559 | event ((W)w, EV_TIMEOUT); |
1619 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
560 | } |
1620 | } |
561 | } |
1621 | } |
562 | |
1622 | |
563 | static void |
1623 | #if EV_PERIODIC_ENABLE |
|
|
1624 | void inline_size |
564 | periodics_reify (void) |
1625 | periodics_reify (EV_P) |
565 | { |
1626 | { |
566 | while (periodiccnt && periodics [0]->at <= ev_now) |
1627 | while (periodiccnt && ANHE_at (periodics [HEAP0]) <= ev_rt_now) |
567 | { |
1628 | { |
568 | struct ev_periodic *w = periodics [0]; |
1629 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
|
|
1630 | |
|
|
1631 | /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ |
569 | |
1632 | |
570 | /* first reschedule or stop timer */ |
1633 | /* first reschedule or stop timer */ |
571 | if (w->interval) |
1634 | if (w->reschedule_cb) |
572 | { |
1635 | { |
|
|
1636 | ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON); |
|
|
1637 | assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now)); |
|
|
1638 | downheap (periodics, periodiccnt, 1); |
|
|
1639 | } |
|
|
1640 | else if (w->interval) |
|
|
1641 | { |
573 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
1642 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1643 | if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval; |
574 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now)); |
1644 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now)); |
575 | downheap ((WT *)periodics, periodiccnt, 0); |
1645 | downheap (periodics, periodiccnt, HEAP0); |
576 | } |
1646 | } |
577 | else |
1647 | else |
578 | ev_periodic_stop (w); /* nonrepeating: stop timer */ |
1648 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
579 | |
1649 | |
580 | event ((W)w, EV_PERIODIC); |
1650 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
581 | } |
1651 | } |
582 | } |
1652 | } |
583 | |
1653 | |
584 | static void |
1654 | static void noinline |
585 | periodics_reschedule (ev_tstamp diff) |
1655 | periodics_reschedule (EV_P) |
586 | { |
1656 | { |
587 | int i; |
1657 | int i; |
588 | |
1658 | |
589 | /* adjust periodics after time jump */ |
1659 | /* adjust periodics after time jump */ |
590 | for (i = 0; i < periodiccnt; ++i) |
1660 | for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
591 | { |
1661 | { |
592 | struct ev_periodic *w = periodics [i]; |
1662 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
593 | |
1663 | |
|
|
1664 | if (w->reschedule_cb) |
|
|
1665 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
594 | if (w->interval) |
1666 | else if (w->interval) |
|
|
1667 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1668 | } |
|
|
1669 | |
|
|
1670 | /* now rebuild the heap, this for the 2-heap, inefficient for the 4-heap, but correct */ |
|
|
1671 | for (i = periodiccnt >> 1; --i; ) |
|
|
1672 | downheap (periodics, periodiccnt, i + HEAP0); |
|
|
1673 | } |
|
|
1674 | #endif |
|
|
1675 | |
|
|
1676 | void inline_speed |
|
|
1677 | time_update (EV_P_ ev_tstamp max_block) |
|
|
1678 | { |
|
|
1679 | int i; |
|
|
1680 | |
|
|
1681 | #if EV_USE_MONOTONIC |
|
|
1682 | if (expect_true (have_monotonic)) |
|
|
1683 | { |
|
|
1684 | ev_tstamp odiff = rtmn_diff; |
|
|
1685 | |
|
|
1686 | mn_now = get_clock (); |
|
|
1687 | |
|
|
1688 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
1689 | /* interpolate in the meantime */ |
|
|
1690 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
595 | { |
1691 | { |
596 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
1692 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1693 | return; |
|
|
1694 | } |
597 | |
1695 | |
598 | if (fabs (diff) >= 1e-4) |
1696 | now_floor = mn_now; |
|
|
1697 | ev_rt_now = ev_time (); |
|
|
1698 | |
|
|
1699 | /* loop a few times, before making important decisions. |
|
|
1700 | * on the choice of "4": one iteration isn't enough, |
|
|
1701 | * in case we get preempted during the calls to |
|
|
1702 | * ev_time and get_clock. a second call is almost guaranteed |
|
|
1703 | * to succeed in that case, though. and looping a few more times |
|
|
1704 | * doesn't hurt either as we only do this on time-jumps or |
|
|
1705 | * in the unlikely event of having been preempted here. |
|
|
1706 | */ |
|
|
1707 | for (i = 4; --i; ) |
|
|
1708 | { |
|
|
1709 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1710 | |
|
|
1711 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
|
|
1712 | return; /* all is well */ |
|
|
1713 | |
|
|
1714 | ev_rt_now = ev_time (); |
|
|
1715 | mn_now = get_clock (); |
|
|
1716 | now_floor = mn_now; |
|
|
1717 | } |
|
|
1718 | |
|
|
1719 | # if EV_PERIODIC_ENABLE |
|
|
1720 | periodics_reschedule (EV_A); |
|
|
1721 | # endif |
|
|
1722 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1723 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
1724 | } |
|
|
1725 | else |
|
|
1726 | #endif |
|
|
1727 | { |
|
|
1728 | ev_rt_now = ev_time (); |
|
|
1729 | |
|
|
1730 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
|
|
1731 | { |
|
|
1732 | #if EV_PERIODIC_ENABLE |
|
|
1733 | periodics_reschedule (EV_A); |
|
|
1734 | #endif |
|
|
1735 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
|
|
1736 | for (i = 0; i < timercnt; ++i) |
599 | { |
1737 | { |
600 | ev_periodic_stop (w); |
1738 | ANHE *he = timers + i + HEAP0; |
601 | ev_periodic_start (w); |
1739 | ANHE_w (*he)->at += ev_rt_now - mn_now; |
602 | |
1740 | ANHE_at_set (*he); |
603 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
|
|
604 | } |
1741 | } |
605 | } |
1742 | } |
606 | } |
|
|
607 | } |
|
|
608 | |
1743 | |
609 | static void |
1744 | 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 | { |
1745 | } |
618 | ev_tstamp odiff = diff; |
1746 | } |
619 | |
1747 | |
620 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
1748 | void |
|
|
1749 | ev_ref (EV_P) |
|
|
1750 | { |
|
|
1751 | ++activecnt; |
|
|
1752 | } |
|
|
1753 | |
|
|
1754 | void |
|
|
1755 | ev_unref (EV_P) |
|
|
1756 | { |
|
|
1757 | --activecnt; |
|
|
1758 | } |
|
|
1759 | |
|
|
1760 | static int loop_done; |
|
|
1761 | |
|
|
1762 | void |
|
|
1763 | ev_loop (EV_P_ int flags) |
|
|
1764 | { |
|
|
1765 | loop_done = EVUNLOOP_CANCEL; |
|
|
1766 | |
|
|
1767 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
|
|
1768 | |
|
|
1769 | do |
|
|
1770 | { |
|
|
1771 | #ifndef _WIN32 |
|
|
1772 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
1773 | if (expect_false (getpid () != curpid)) |
|
|
1774 | { |
|
|
1775 | curpid = getpid (); |
|
|
1776 | postfork = 1; |
|
|
1777 | } |
|
|
1778 | #endif |
|
|
1779 | |
|
|
1780 | #if EV_FORK_ENABLE |
|
|
1781 | /* we might have forked, so queue fork handlers */ |
|
|
1782 | if (expect_false (postfork)) |
|
|
1783 | if (forkcnt) |
|
|
1784 | { |
|
|
1785 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
1786 | call_pending (EV_A); |
|
|
1787 | } |
|
|
1788 | #endif |
|
|
1789 | |
|
|
1790 | /* queue prepare watchers (and execute them) */ |
|
|
1791 | if (expect_false (preparecnt)) |
621 | { |
1792 | { |
622 | now = get_clock (); |
1793 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
623 | diff = ev_now - now; |
1794 | call_pending (EV_A); |
624 | |
|
|
625 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
|
|
626 | return; /* all is well */ |
|
|
627 | |
|
|
628 | ev_now = ev_time (); |
|
|
629 | } |
1795 | } |
630 | |
1796 | |
631 | periodics_reschedule (diff - odiff); |
1797 | if (expect_false (!activecnt)) |
632 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
1798 | 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 | |
1799 | |
640 | /* adjust timers. this is easy, as the offset is the same for all */ |
1800 | /* we might have forked, so reify kernel state if necessary */ |
641 | for (i = 0; i < timercnt; ++i) |
1801 | if (expect_false (postfork)) |
642 | timers [i]->at += diff; |
1802 | 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 | |
1803 | |
665 | /* update fd-related kernel structures */ |
1804 | /* update fd-related kernel structures */ |
666 | fd_reify (); |
1805 | fd_reify (EV_A); |
667 | |
1806 | |
668 | /* calculate blocking time */ |
1807 | /* calculate blocking time */ |
|
|
1808 | { |
|
|
1809 | ev_tstamp waittime = 0.; |
|
|
1810 | ev_tstamp sleeptime = 0.; |
669 | |
1811 | |
670 | /* we only need this for !monotonic clockor timers, but as we basically |
1812 | 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 | { |
1813 | { |
|
|
1814 | /* update time to cancel out callback processing overhead */ |
|
|
1815 | time_update (EV_A_ 1e100); |
|
|
1816 | |
678 | block = MAX_BLOCKTIME; |
1817 | waittime = MAX_BLOCKTIME; |
679 | |
1818 | |
680 | if (timercnt) |
1819 | if (timercnt) |
681 | { |
1820 | { |
682 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
1821 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
683 | if (block > to) block = to; |
1822 | if (waittime > to) waittime = to; |
684 | } |
1823 | } |
685 | |
1824 | |
|
|
1825 | #if EV_PERIODIC_ENABLE |
686 | if (periodiccnt) |
1826 | if (periodiccnt) |
687 | { |
1827 | { |
688 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
1828 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
689 | if (block > to) block = to; |
1829 | if (waittime > to) waittime = to; |
690 | } |
1830 | } |
|
|
1831 | #endif |
691 | |
1832 | |
692 | if (block < 0.) block = 0.; |
1833 | if (expect_false (waittime < timeout_blocktime)) |
|
|
1834 | waittime = timeout_blocktime; |
|
|
1835 | |
|
|
1836 | sleeptime = waittime - backend_fudge; |
|
|
1837 | |
|
|
1838 | if (expect_true (sleeptime > io_blocktime)) |
|
|
1839 | sleeptime = io_blocktime; |
|
|
1840 | |
|
|
1841 | if (sleeptime) |
|
|
1842 | { |
|
|
1843 | ev_sleep (sleeptime); |
|
|
1844 | waittime -= sleeptime; |
|
|
1845 | } |
693 | } |
1846 | } |
694 | |
1847 | |
695 | method_poll (block); |
1848 | ++loop_count; |
|
|
1849 | backend_poll (EV_A_ waittime); |
696 | |
1850 | |
697 | /* update ev_now, do magic */ |
1851 | /* update ev_rt_now, do magic */ |
698 | time_update (); |
1852 | time_update (EV_A_ waittime + sleeptime); |
|
|
1853 | } |
699 | |
1854 | |
700 | /* queue pending timers and reschedule them */ |
1855 | /* queue pending timers and reschedule them */ |
701 | timers_reify (); /* relative timers called last */ |
1856 | timers_reify (EV_A); /* relative timers called last */ |
|
|
1857 | #if EV_PERIODIC_ENABLE |
702 | periodics_reify (); /* absolute timers called first */ |
1858 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
1859 | #endif |
703 | |
1860 | |
|
|
1861 | #if EV_IDLE_ENABLE |
704 | /* queue idle watchers unless io or timers are pending */ |
1862 | /* queue idle watchers unless other events are pending */ |
705 | if (!pendingcnt) |
1863 | idle_reify (EV_A); |
706 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
1864 | #endif |
707 | |
1865 | |
708 | /* queue check watchers, to be executed first */ |
1866 | /* queue check watchers, to be executed first */ |
709 | if (checkcnt) |
1867 | if (expect_false (checkcnt)) |
710 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1868 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
711 | |
1869 | |
712 | call_pending (); |
1870 | call_pending (EV_A); |
713 | } |
1871 | } |
714 | while (!ev_loop_done); |
1872 | while (expect_true ( |
|
|
1873 | activecnt |
|
|
1874 | && !loop_done |
|
|
1875 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
|
|
1876 | )); |
715 | |
1877 | |
716 | if (ev_loop_done != 2) |
1878 | if (loop_done == EVUNLOOP_ONE) |
|
|
1879 | loop_done = EVUNLOOP_CANCEL; |
|
|
1880 | } |
|
|
1881 | |
|
|
1882 | void |
|
|
1883 | ev_unloop (EV_P_ int how) |
|
|
1884 | { |
717 | ev_loop_done = 0; |
1885 | loop_done = how; |
718 | } |
1886 | } |
719 | |
1887 | |
720 | /*****************************************************************************/ |
1888 | /*****************************************************************************/ |
721 | |
1889 | |
722 | static void |
1890 | void inline_size |
723 | wlist_add (WL *head, WL elem) |
1891 | wlist_add (WL *head, WL elem) |
724 | { |
1892 | { |
725 | elem->next = *head; |
1893 | elem->next = *head; |
726 | *head = elem; |
1894 | *head = elem; |
727 | } |
1895 | } |
728 | |
1896 | |
729 | static void |
1897 | void inline_size |
730 | wlist_del (WL *head, WL elem) |
1898 | wlist_del (WL *head, WL elem) |
731 | { |
1899 | { |
732 | while (*head) |
1900 | while (*head) |
733 | { |
1901 | { |
734 | if (*head == elem) |
1902 | if (*head == elem) |
… | |
… | |
739 | |
1907 | |
740 | head = &(*head)->next; |
1908 | head = &(*head)->next; |
741 | } |
1909 | } |
742 | } |
1910 | } |
743 | |
1911 | |
744 | static void |
1912 | void inline_speed |
745 | ev_clear_pending (W w) |
1913 | clear_pending (EV_P_ W w) |
746 | { |
1914 | { |
747 | if (w->pending) |
1915 | if (w->pending) |
748 | { |
1916 | { |
749 | pendings [w->pending - 1].w = 0; |
1917 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
750 | w->pending = 0; |
1918 | w->pending = 0; |
751 | } |
1919 | } |
752 | } |
1920 | } |
753 | |
1921 | |
754 | static void |
1922 | int |
|
|
1923 | ev_clear_pending (EV_P_ void *w) |
|
|
1924 | { |
|
|
1925 | W w_ = (W)w; |
|
|
1926 | int pending = w_->pending; |
|
|
1927 | |
|
|
1928 | if (expect_true (pending)) |
|
|
1929 | { |
|
|
1930 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
1931 | w_->pending = 0; |
|
|
1932 | p->w = 0; |
|
|
1933 | return p->events; |
|
|
1934 | } |
|
|
1935 | else |
|
|
1936 | return 0; |
|
|
1937 | } |
|
|
1938 | |
|
|
1939 | void inline_size |
|
|
1940 | pri_adjust (EV_P_ W w) |
|
|
1941 | { |
|
|
1942 | int pri = w->priority; |
|
|
1943 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
1944 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
1945 | w->priority = pri; |
|
|
1946 | } |
|
|
1947 | |
|
|
1948 | void inline_speed |
755 | ev_start (W w, int active) |
1949 | ev_start (EV_P_ W w, int active) |
756 | { |
1950 | { |
|
|
1951 | pri_adjust (EV_A_ w); |
757 | w->active = active; |
1952 | w->active = active; |
|
|
1953 | ev_ref (EV_A); |
758 | } |
1954 | } |
759 | |
1955 | |
760 | static void |
1956 | void inline_size |
761 | ev_stop (W w) |
1957 | ev_stop (EV_P_ W w) |
762 | { |
1958 | { |
|
|
1959 | ev_unref (EV_A); |
763 | w->active = 0; |
1960 | w->active = 0; |
764 | } |
1961 | } |
765 | |
1962 | |
766 | /*****************************************************************************/ |
1963 | /*****************************************************************************/ |
767 | |
1964 | |
768 | void |
1965 | void noinline |
769 | ev_io_start (struct ev_io *w) |
1966 | ev_io_start (EV_P_ ev_io *w) |
770 | { |
1967 | { |
771 | int fd = w->fd; |
1968 | int fd = w->fd; |
772 | |
1969 | |
773 | if (ev_is_active (w)) |
1970 | if (expect_false (ev_is_active (w))) |
774 | return; |
1971 | return; |
775 | |
1972 | |
776 | assert (("ev_io_start called with negative fd", fd >= 0)); |
1973 | assert (("ev_io_start called with negative fd", fd >= 0)); |
777 | |
1974 | |
778 | ev_start ((W)w, 1); |
1975 | ev_start (EV_A_ (W)w, 1); |
779 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1976 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
780 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1977 | wlist_add (&anfds[fd].head, (WL)w); |
781 | |
1978 | |
782 | fd_change (fd); |
1979 | fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); |
|
|
1980 | w->events &= ~EV_IOFDSET; |
783 | } |
1981 | } |
784 | |
1982 | |
785 | void |
1983 | void noinline |
786 | ev_io_stop (struct ev_io *w) |
1984 | ev_io_stop (EV_P_ ev_io *w) |
787 | { |
1985 | { |
788 | ev_clear_pending ((W)w); |
1986 | clear_pending (EV_A_ (W)w); |
789 | if (!ev_is_active (w)) |
1987 | if (expect_false (!ev_is_active (w))) |
790 | return; |
1988 | return; |
791 | |
1989 | |
|
|
1990 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
1991 | |
792 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1992 | wlist_del (&anfds[w->fd].head, (WL)w); |
793 | ev_stop ((W)w); |
1993 | ev_stop (EV_A_ (W)w); |
794 | |
1994 | |
795 | fd_change (w->fd); |
1995 | fd_change (EV_A_ w->fd, 1); |
796 | } |
1996 | } |
797 | |
1997 | |
798 | void |
1998 | void noinline |
799 | ev_timer_start (struct ev_timer *w) |
1999 | ev_timer_start (EV_P_ ev_timer *w) |
800 | { |
2000 | { |
801 | if (ev_is_active (w)) |
2001 | if (expect_false (ev_is_active (w))) |
802 | return; |
2002 | return; |
803 | |
2003 | |
804 | w->at += now; |
2004 | ev_at (w) += mn_now; |
805 | |
2005 | |
806 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
2006 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
807 | |
2007 | |
808 | ev_start ((W)w, ++timercnt); |
2008 | ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); |
809 | array_needsize (timers, timermax, timercnt, ); |
2009 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); |
810 | timers [timercnt - 1] = w; |
2010 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
811 | upheap ((WT *)timers, timercnt - 1); |
2011 | ANHE_at_set (timers [ev_active (w)]); |
812 | } |
2012 | upheap (timers, ev_active (w)); |
813 | |
2013 | |
814 | void |
2014 | /*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/ |
|
|
2015 | } |
|
|
2016 | |
|
|
2017 | void noinline |
815 | ev_timer_stop (struct ev_timer *w) |
2018 | ev_timer_stop (EV_P_ ev_timer *w) |
816 | { |
2019 | { |
817 | ev_clear_pending ((W)w); |
2020 | clear_pending (EV_A_ (W)w); |
818 | if (!ev_is_active (w)) |
2021 | if (expect_false (!ev_is_active (w))) |
819 | return; |
2022 | return; |
820 | |
2023 | |
821 | if (w->active < timercnt--) |
2024 | { |
|
|
2025 | int active = ev_active (w); |
|
|
2026 | |
|
|
2027 | assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
|
|
2028 | |
|
|
2029 | if (expect_true (active < timercnt + HEAP0 - 1)) |
822 | { |
2030 | { |
823 | timers [w->active - 1] = timers [timercnt]; |
2031 | timers [active] = timers [timercnt + HEAP0 - 1]; |
824 | downheap ((WT *)timers, timercnt, w->active - 1); |
2032 | adjustheap (timers, timercnt, active); |
825 | } |
2033 | } |
826 | |
2034 | |
827 | w->at = w->repeat; |
2035 | --timercnt; |
|
|
2036 | } |
828 | |
2037 | |
|
|
2038 | ev_at (w) -= mn_now; |
|
|
2039 | |
829 | ev_stop ((W)w); |
2040 | ev_stop (EV_A_ (W)w); |
830 | } |
2041 | } |
831 | |
2042 | |
832 | void |
2043 | void noinline |
833 | ev_timer_again (struct ev_timer *w) |
2044 | ev_timer_again (EV_P_ ev_timer *w) |
834 | { |
2045 | { |
835 | if (ev_is_active (w)) |
2046 | if (ev_is_active (w)) |
836 | { |
2047 | { |
837 | if (w->repeat) |
2048 | if (w->repeat) |
838 | { |
2049 | { |
839 | w->at = now + w->repeat; |
2050 | ev_at (w) = mn_now + w->repeat; |
|
|
2051 | ANHE_at_set (timers [ev_active (w)]); |
840 | downheap ((WT *)timers, timercnt, w->active - 1); |
2052 | adjustheap (timers, timercnt, ev_active (w)); |
841 | } |
2053 | } |
842 | else |
2054 | else |
843 | ev_timer_stop (w); |
2055 | ev_timer_stop (EV_A_ w); |
844 | } |
2056 | } |
845 | else if (w->repeat) |
2057 | else if (w->repeat) |
|
|
2058 | { |
|
|
2059 | ev_at (w) = w->repeat; |
846 | ev_timer_start (w); |
2060 | ev_timer_start (EV_A_ w); |
|
|
2061 | } |
847 | } |
2062 | } |
848 | |
2063 | |
849 | void |
2064 | #if EV_PERIODIC_ENABLE |
|
|
2065 | void noinline |
850 | ev_periodic_start (struct ev_periodic *w) |
2066 | ev_periodic_start (EV_P_ ev_periodic *w) |
851 | { |
2067 | { |
852 | if (ev_is_active (w)) |
2068 | if (expect_false (ev_is_active (w))) |
853 | return; |
2069 | return; |
854 | |
2070 | |
|
|
2071 | if (w->reschedule_cb) |
|
|
2072 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
2073 | else if (w->interval) |
|
|
2074 | { |
855 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2075 | 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 */ |
2076 | /* 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; |
2077 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2078 | } |
|
|
2079 | else |
|
|
2080 | ev_at (w) = w->offset; |
860 | |
2081 | |
861 | ev_start ((W)w, ++periodiccnt); |
2082 | ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); |
862 | array_needsize (periodics, periodicmax, periodiccnt, ); |
2083 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); |
863 | periodics [periodiccnt - 1] = w; |
2084 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
864 | upheap ((WT *)periodics, periodiccnt - 1); |
2085 | upheap (periodics, ev_active (w)); |
865 | } |
|
|
866 | |
2086 | |
867 | void |
2087 | /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
|
|
2088 | } |
|
|
2089 | |
|
|
2090 | void noinline |
868 | ev_periodic_stop (struct ev_periodic *w) |
2091 | ev_periodic_stop (EV_P_ ev_periodic *w) |
869 | { |
2092 | { |
870 | ev_clear_pending ((W)w); |
2093 | clear_pending (EV_A_ (W)w); |
871 | if (!ev_is_active (w)) |
2094 | if (expect_false (!ev_is_active (w))) |
872 | return; |
2095 | return; |
873 | |
2096 | |
874 | if (w->active < periodiccnt--) |
2097 | { |
|
|
2098 | int active = ev_active (w); |
|
|
2099 | |
|
|
2100 | assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
|
|
2101 | |
|
|
2102 | if (expect_true (active < periodiccnt + HEAP0 - 1)) |
875 | { |
2103 | { |
876 | periodics [w->active - 1] = periodics [periodiccnt]; |
2104 | periodics [active] = periodics [periodiccnt + HEAP0 - 1]; |
877 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
2105 | adjustheap (periodics, periodiccnt, active); |
878 | } |
2106 | } |
879 | |
2107 | |
|
|
2108 | --periodiccnt; |
|
|
2109 | } |
|
|
2110 | |
880 | ev_stop ((W)w); |
2111 | ev_stop (EV_A_ (W)w); |
881 | } |
2112 | } |
882 | |
2113 | |
883 | void |
2114 | void noinline |
|
|
2115 | ev_periodic_again (EV_P_ ev_periodic *w) |
|
|
2116 | { |
|
|
2117 | /* TODO: use adjustheap and recalculation */ |
|
|
2118 | ev_periodic_stop (EV_A_ w); |
|
|
2119 | ev_periodic_start (EV_A_ w); |
|
|
2120 | } |
|
|
2121 | #endif |
|
|
2122 | |
|
|
2123 | #ifndef SA_RESTART |
|
|
2124 | # define SA_RESTART 0 |
|
|
2125 | #endif |
|
|
2126 | |
|
|
2127 | void noinline |
884 | ev_signal_start (struct ev_signal *w) |
2128 | ev_signal_start (EV_P_ ev_signal *w) |
885 | { |
2129 | { |
|
|
2130 | #if EV_MULTIPLICITY |
|
|
2131 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2132 | #endif |
886 | if (ev_is_active (w)) |
2133 | if (expect_false (ev_is_active (w))) |
887 | return; |
2134 | return; |
888 | |
2135 | |
889 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
2136 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
890 | |
2137 | |
891 | ev_start ((W)w, 1); |
2138 | evpipe_init (EV_A); |
|
|
2139 | |
|
|
2140 | { |
|
|
2141 | #ifndef _WIN32 |
|
|
2142 | sigset_t full, prev; |
|
|
2143 | sigfillset (&full); |
|
|
2144 | sigprocmask (SIG_SETMASK, &full, &prev); |
|
|
2145 | #endif |
|
|
2146 | |
892 | array_needsize (signals, signalmax, w->signum, signals_init); |
2147 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
|
|
2148 | |
|
|
2149 | #ifndef _WIN32 |
|
|
2150 | sigprocmask (SIG_SETMASK, &prev, 0); |
|
|
2151 | #endif |
|
|
2152 | } |
|
|
2153 | |
|
|
2154 | ev_start (EV_A_ (W)w, 1); |
893 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
2155 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
894 | |
2156 | |
895 | if (!w->next) |
2157 | if (!((WL)w)->next) |
896 | { |
2158 | { |
|
|
2159 | #if _WIN32 |
|
|
2160 | signal (w->signum, ev_sighandler); |
|
|
2161 | #else |
897 | struct sigaction sa; |
2162 | struct sigaction sa; |
898 | sa.sa_handler = sighandler; |
2163 | sa.sa_handler = ev_sighandler; |
899 | sigfillset (&sa.sa_mask); |
2164 | sigfillset (&sa.sa_mask); |
900 | sa.sa_flags = 0; |
2165 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
901 | sigaction (w->signum, &sa, 0); |
2166 | sigaction (w->signum, &sa, 0); |
|
|
2167 | #endif |
902 | } |
2168 | } |
903 | } |
2169 | } |
904 | |
2170 | |
905 | void |
2171 | void noinline |
906 | ev_signal_stop (struct ev_signal *w) |
2172 | ev_signal_stop (EV_P_ ev_signal *w) |
907 | { |
2173 | { |
908 | ev_clear_pending ((W)w); |
2174 | clear_pending (EV_A_ (W)w); |
909 | if (!ev_is_active (w)) |
2175 | if (expect_false (!ev_is_active (w))) |
910 | return; |
2176 | return; |
911 | |
2177 | |
912 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
2178 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
913 | ev_stop ((W)w); |
2179 | ev_stop (EV_A_ (W)w); |
914 | |
2180 | |
915 | if (!signals [w->signum - 1].head) |
2181 | if (!signals [w->signum - 1].head) |
916 | signal (w->signum, SIG_DFL); |
2182 | signal (w->signum, SIG_DFL); |
917 | } |
2183 | } |
918 | |
2184 | |
919 | void |
2185 | void |
920 | ev_idle_start (struct ev_idle *w) |
2186 | ev_child_start (EV_P_ ev_child *w) |
921 | { |
2187 | { |
|
|
2188 | #if EV_MULTIPLICITY |
|
|
2189 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2190 | #endif |
922 | if (ev_is_active (w)) |
2191 | if (expect_false (ev_is_active (w))) |
923 | return; |
2192 | return; |
924 | |
2193 | |
925 | ev_start ((W)w, ++idlecnt); |
2194 | ev_start (EV_A_ (W)w, 1); |
926 | array_needsize (idles, idlemax, idlecnt, ); |
2195 | wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
927 | idles [idlecnt - 1] = w; |
|
|
928 | } |
2196 | } |
929 | |
2197 | |
930 | void |
2198 | void |
931 | ev_idle_stop (struct ev_idle *w) |
2199 | ev_child_stop (EV_P_ ev_child *w) |
932 | { |
2200 | { |
933 | ev_clear_pending ((W)w); |
2201 | clear_pending (EV_A_ (W)w); |
934 | if (ev_is_active (w)) |
2202 | if (expect_false (!ev_is_active (w))) |
935 | return; |
2203 | return; |
936 | |
2204 | |
937 | idles [w->active - 1] = idles [--idlecnt]; |
2205 | wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
938 | ev_stop ((W)w); |
2206 | ev_stop (EV_A_ (W)w); |
939 | } |
2207 | } |
940 | |
2208 | |
941 | void |
2209 | #if EV_STAT_ENABLE |
942 | ev_prepare_start (struct ev_prepare *w) |
2210 | |
|
|
2211 | # ifdef _WIN32 |
|
|
2212 | # undef lstat |
|
|
2213 | # define lstat(a,b) _stati64 (a,b) |
|
|
2214 | # endif |
|
|
2215 | |
|
|
2216 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
2217 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
2218 | |
|
|
2219 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
2220 | |
|
|
2221 | #if EV_USE_INOTIFY |
|
|
2222 | # define EV_INOTIFY_BUFSIZE 8192 |
|
|
2223 | |
|
|
2224 | static void noinline |
|
|
2225 | infy_add (EV_P_ ev_stat *w) |
943 | { |
2226 | { |
944 | if (ev_is_active (w)) |
2227 | 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); |
|
|
2228 | |
|
|
2229 | if (w->wd < 0) |
|
|
2230 | { |
|
|
2231 | ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
|
|
2232 | |
|
|
2233 | /* monitor some parent directory for speedup hints */ |
|
|
2234 | /* note that exceeding the hardcoded limit is not a correctness issue, */ |
|
|
2235 | /* but an efficiency issue only */ |
|
|
2236 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
|
|
2237 | { |
|
|
2238 | char path [4096]; |
|
|
2239 | strcpy (path, w->path); |
|
|
2240 | |
|
|
2241 | do |
|
|
2242 | { |
|
|
2243 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
|
|
2244 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
|
|
2245 | |
|
|
2246 | char *pend = strrchr (path, '/'); |
|
|
2247 | |
|
|
2248 | if (!pend) |
|
|
2249 | break; /* whoops, no '/', complain to your admin */ |
|
|
2250 | |
|
|
2251 | *pend = 0; |
|
|
2252 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
2253 | } |
|
|
2254 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
2255 | } |
|
|
2256 | } |
|
|
2257 | else |
|
|
2258 | ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */ |
|
|
2259 | |
|
|
2260 | if (w->wd >= 0) |
|
|
2261 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
2262 | } |
|
|
2263 | |
|
|
2264 | static void noinline |
|
|
2265 | infy_del (EV_P_ ev_stat *w) |
|
|
2266 | { |
|
|
2267 | int slot; |
|
|
2268 | int wd = w->wd; |
|
|
2269 | |
|
|
2270 | if (wd < 0) |
945 | return; |
2271 | return; |
946 | |
2272 | |
|
|
2273 | w->wd = -2; |
|
|
2274 | slot = wd & (EV_INOTIFY_HASHSIZE - 1); |
|
|
2275 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
2276 | |
|
|
2277 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
2278 | inotify_rm_watch (fs_fd, wd); |
|
|
2279 | } |
|
|
2280 | |
|
|
2281 | static void noinline |
|
|
2282 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
2283 | { |
|
|
2284 | if (slot < 0) |
|
|
2285 | /* overflow, need to check for all hahs slots */ |
|
|
2286 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2287 | infy_wd (EV_A_ slot, wd, ev); |
|
|
2288 | else |
|
|
2289 | { |
|
|
2290 | WL w_; |
|
|
2291 | |
|
|
2292 | for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) |
|
|
2293 | { |
|
|
2294 | ev_stat *w = (ev_stat *)w_; |
|
|
2295 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
2296 | |
|
|
2297 | if (w->wd == wd || wd == -1) |
|
|
2298 | { |
|
|
2299 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
2300 | { |
|
|
2301 | w->wd = -1; |
|
|
2302 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2303 | } |
|
|
2304 | |
|
|
2305 | stat_timer_cb (EV_A_ &w->timer, 0); |
|
|
2306 | } |
|
|
2307 | } |
|
|
2308 | } |
|
|
2309 | } |
|
|
2310 | |
|
|
2311 | static void |
|
|
2312 | infy_cb (EV_P_ ev_io *w, int revents) |
|
|
2313 | { |
|
|
2314 | char buf [EV_INOTIFY_BUFSIZE]; |
|
|
2315 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
2316 | int ofs; |
|
|
2317 | int len = read (fs_fd, buf, sizeof (buf)); |
|
|
2318 | |
|
|
2319 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
|
|
2320 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
2321 | } |
|
|
2322 | |
|
|
2323 | void inline_size |
|
|
2324 | infy_init (EV_P) |
|
|
2325 | { |
|
|
2326 | if (fs_fd != -2) |
|
|
2327 | return; |
|
|
2328 | |
|
|
2329 | fs_fd = inotify_init (); |
|
|
2330 | |
|
|
2331 | if (fs_fd >= 0) |
|
|
2332 | { |
|
|
2333 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
2334 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
2335 | ev_io_start (EV_A_ &fs_w); |
|
|
2336 | } |
|
|
2337 | } |
|
|
2338 | |
|
|
2339 | void inline_size |
|
|
2340 | infy_fork (EV_P) |
|
|
2341 | { |
|
|
2342 | int slot; |
|
|
2343 | |
|
|
2344 | if (fs_fd < 0) |
|
|
2345 | return; |
|
|
2346 | |
|
|
2347 | close (fs_fd); |
|
|
2348 | fs_fd = inotify_init (); |
|
|
2349 | |
|
|
2350 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2351 | { |
|
|
2352 | WL w_ = fs_hash [slot].head; |
|
|
2353 | fs_hash [slot].head = 0; |
|
|
2354 | |
|
|
2355 | while (w_) |
|
|
2356 | { |
|
|
2357 | ev_stat *w = (ev_stat *)w_; |
|
|
2358 | w_ = w_->next; /* lets us add this watcher */ |
|
|
2359 | |
|
|
2360 | w->wd = -1; |
|
|
2361 | |
|
|
2362 | if (fs_fd >= 0) |
|
|
2363 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2364 | else |
|
|
2365 | ev_timer_start (EV_A_ &w->timer); |
|
|
2366 | } |
|
|
2367 | |
|
|
2368 | } |
|
|
2369 | } |
|
|
2370 | |
|
|
2371 | #endif |
|
|
2372 | |
|
|
2373 | void |
|
|
2374 | ev_stat_stat (EV_P_ ev_stat *w) |
|
|
2375 | { |
|
|
2376 | if (lstat (w->path, &w->attr) < 0) |
|
|
2377 | w->attr.st_nlink = 0; |
|
|
2378 | else if (!w->attr.st_nlink) |
|
|
2379 | w->attr.st_nlink = 1; |
|
|
2380 | } |
|
|
2381 | |
|
|
2382 | static void noinline |
|
|
2383 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
2384 | { |
|
|
2385 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
2386 | |
|
|
2387 | /* we copy this here each the time so that */ |
|
|
2388 | /* prev has the old value when the callback gets invoked */ |
|
|
2389 | w->prev = w->attr; |
|
|
2390 | ev_stat_stat (EV_A_ w); |
|
|
2391 | |
|
|
2392 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
2393 | if ( |
|
|
2394 | w->prev.st_dev != w->attr.st_dev |
|
|
2395 | || w->prev.st_ino != w->attr.st_ino |
|
|
2396 | || w->prev.st_mode != w->attr.st_mode |
|
|
2397 | || w->prev.st_nlink != w->attr.st_nlink |
|
|
2398 | || w->prev.st_uid != w->attr.st_uid |
|
|
2399 | || w->prev.st_gid != w->attr.st_gid |
|
|
2400 | || w->prev.st_rdev != w->attr.st_rdev |
|
|
2401 | || w->prev.st_size != w->attr.st_size |
|
|
2402 | || w->prev.st_atime != w->attr.st_atime |
|
|
2403 | || w->prev.st_mtime != w->attr.st_mtime |
|
|
2404 | || w->prev.st_ctime != w->attr.st_ctime |
|
|
2405 | ) { |
|
|
2406 | #if EV_USE_INOTIFY |
|
|
2407 | infy_del (EV_A_ w); |
|
|
2408 | infy_add (EV_A_ w); |
|
|
2409 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
2410 | #endif |
|
|
2411 | |
|
|
2412 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
2413 | } |
|
|
2414 | } |
|
|
2415 | |
|
|
2416 | void |
|
|
2417 | ev_stat_start (EV_P_ ev_stat *w) |
|
|
2418 | { |
|
|
2419 | if (expect_false (ev_is_active (w))) |
|
|
2420 | return; |
|
|
2421 | |
|
|
2422 | /* since we use memcmp, we need to clear any padding data etc. */ |
|
|
2423 | memset (&w->prev, 0, sizeof (ev_statdata)); |
|
|
2424 | memset (&w->attr, 0, sizeof (ev_statdata)); |
|
|
2425 | |
|
|
2426 | ev_stat_stat (EV_A_ w); |
|
|
2427 | |
|
|
2428 | if (w->interval < MIN_STAT_INTERVAL) |
|
|
2429 | w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2430 | |
|
|
2431 | ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); |
|
|
2432 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
2433 | |
|
|
2434 | #if EV_USE_INOTIFY |
|
|
2435 | infy_init (EV_A); |
|
|
2436 | |
|
|
2437 | if (fs_fd >= 0) |
|
|
2438 | infy_add (EV_A_ w); |
|
|
2439 | else |
|
|
2440 | #endif |
|
|
2441 | ev_timer_start (EV_A_ &w->timer); |
|
|
2442 | |
|
|
2443 | ev_start (EV_A_ (W)w, 1); |
|
|
2444 | } |
|
|
2445 | |
|
|
2446 | void |
|
|
2447 | ev_stat_stop (EV_P_ ev_stat *w) |
|
|
2448 | { |
|
|
2449 | clear_pending (EV_A_ (W)w); |
|
|
2450 | if (expect_false (!ev_is_active (w))) |
|
|
2451 | return; |
|
|
2452 | |
|
|
2453 | #if EV_USE_INOTIFY |
|
|
2454 | infy_del (EV_A_ w); |
|
|
2455 | #endif |
|
|
2456 | ev_timer_stop (EV_A_ &w->timer); |
|
|
2457 | |
|
|
2458 | ev_stop (EV_A_ (W)w); |
|
|
2459 | } |
|
|
2460 | #endif |
|
|
2461 | |
|
|
2462 | #if EV_IDLE_ENABLE |
|
|
2463 | void |
|
|
2464 | ev_idle_start (EV_P_ ev_idle *w) |
|
|
2465 | { |
|
|
2466 | if (expect_false (ev_is_active (w))) |
|
|
2467 | return; |
|
|
2468 | |
|
|
2469 | pri_adjust (EV_A_ (W)w); |
|
|
2470 | |
|
|
2471 | { |
|
|
2472 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
2473 | |
|
|
2474 | ++idleall; |
|
|
2475 | ev_start (EV_A_ (W)w, active); |
|
|
2476 | |
|
|
2477 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
|
|
2478 | idles [ABSPRI (w)][active - 1] = w; |
|
|
2479 | } |
|
|
2480 | } |
|
|
2481 | |
|
|
2482 | void |
|
|
2483 | ev_idle_stop (EV_P_ ev_idle *w) |
|
|
2484 | { |
|
|
2485 | clear_pending (EV_A_ (W)w); |
|
|
2486 | if (expect_false (!ev_is_active (w))) |
|
|
2487 | return; |
|
|
2488 | |
|
|
2489 | { |
|
|
2490 | int active = ev_active (w); |
|
|
2491 | |
|
|
2492 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
2493 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
|
|
2494 | |
|
|
2495 | ev_stop (EV_A_ (W)w); |
|
|
2496 | --idleall; |
|
|
2497 | } |
|
|
2498 | } |
|
|
2499 | #endif |
|
|
2500 | |
|
|
2501 | void |
|
|
2502 | ev_prepare_start (EV_P_ ev_prepare *w) |
|
|
2503 | { |
|
|
2504 | if (expect_false (ev_is_active (w))) |
|
|
2505 | return; |
|
|
2506 | |
947 | ev_start ((W)w, ++preparecnt); |
2507 | ev_start (EV_A_ (W)w, ++preparecnt); |
948 | array_needsize (prepares, preparemax, preparecnt, ); |
2508 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
949 | prepares [preparecnt - 1] = w; |
2509 | prepares [preparecnt - 1] = w; |
950 | } |
2510 | } |
951 | |
2511 | |
952 | void |
2512 | void |
953 | ev_prepare_stop (struct ev_prepare *w) |
2513 | ev_prepare_stop (EV_P_ ev_prepare *w) |
954 | { |
2514 | { |
955 | ev_clear_pending ((W)w); |
2515 | clear_pending (EV_A_ (W)w); |
956 | if (ev_is_active (w)) |
2516 | if (expect_false (!ev_is_active (w))) |
957 | return; |
2517 | return; |
958 | |
2518 | |
|
|
2519 | { |
|
|
2520 | int active = ev_active (w); |
|
|
2521 | |
959 | prepares [w->active - 1] = prepares [--preparecnt]; |
2522 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
2523 | ev_active (prepares [active - 1]) = active; |
|
|
2524 | } |
|
|
2525 | |
960 | ev_stop ((W)w); |
2526 | ev_stop (EV_A_ (W)w); |
961 | } |
2527 | } |
962 | |
2528 | |
963 | void |
2529 | void |
964 | ev_check_start (struct ev_check *w) |
2530 | ev_check_start (EV_P_ ev_check *w) |
965 | { |
2531 | { |
966 | if (ev_is_active (w)) |
2532 | if (expect_false (ev_is_active (w))) |
967 | return; |
2533 | return; |
968 | |
2534 | |
969 | ev_start ((W)w, ++checkcnt); |
2535 | ev_start (EV_A_ (W)w, ++checkcnt); |
970 | array_needsize (checks, checkmax, checkcnt, ); |
2536 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
971 | checks [checkcnt - 1] = w; |
2537 | checks [checkcnt - 1] = w; |
972 | } |
2538 | } |
973 | |
2539 | |
974 | void |
2540 | void |
975 | ev_check_stop (struct ev_check *w) |
2541 | ev_check_stop (EV_P_ ev_check *w) |
976 | { |
2542 | { |
977 | ev_clear_pending ((W)w); |
2543 | clear_pending (EV_A_ (W)w); |
978 | if (ev_is_active (w)) |
2544 | if (expect_false (!ev_is_active (w))) |
979 | return; |
2545 | return; |
980 | |
2546 | |
|
|
2547 | { |
|
|
2548 | int active = ev_active (w); |
|
|
2549 | |
981 | checks [w->active - 1] = checks [--checkcnt]; |
2550 | checks [active - 1] = checks [--checkcnt]; |
|
|
2551 | ev_active (checks [active - 1]) = active; |
|
|
2552 | } |
|
|
2553 | |
982 | ev_stop ((W)w); |
2554 | ev_stop (EV_A_ (W)w); |
983 | } |
2555 | } |
984 | |
2556 | |
985 | void |
2557 | #if EV_EMBED_ENABLE |
986 | ev_child_start (struct ev_child *w) |
2558 | void noinline |
|
|
2559 | ev_embed_sweep (EV_P_ ev_embed *w) |
987 | { |
2560 | { |
|
|
2561 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
2562 | } |
|
|
2563 | |
|
|
2564 | static void |
|
|
2565 | embed_io_cb (EV_P_ ev_io *io, int revents) |
|
|
2566 | { |
|
|
2567 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
|
|
2568 | |
988 | if (ev_is_active (w)) |
2569 | if (ev_cb (w)) |
|
|
2570 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
2571 | else |
|
|
2572 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
2573 | } |
|
|
2574 | |
|
|
2575 | static void |
|
|
2576 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
2577 | { |
|
|
2578 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
2579 | |
|
|
2580 | { |
|
|
2581 | struct ev_loop *loop = w->other; |
|
|
2582 | |
|
|
2583 | while (fdchangecnt) |
|
|
2584 | { |
|
|
2585 | fd_reify (EV_A); |
|
|
2586 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
2587 | } |
|
|
2588 | } |
|
|
2589 | } |
|
|
2590 | |
|
|
2591 | #if 0 |
|
|
2592 | static void |
|
|
2593 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
2594 | { |
|
|
2595 | ev_idle_stop (EV_A_ idle); |
|
|
2596 | } |
|
|
2597 | #endif |
|
|
2598 | |
|
|
2599 | void |
|
|
2600 | ev_embed_start (EV_P_ ev_embed *w) |
|
|
2601 | { |
|
|
2602 | if (expect_false (ev_is_active (w))) |
989 | return; |
2603 | return; |
990 | |
2604 | |
|
|
2605 | { |
|
|
2606 | struct ev_loop *loop = w->other; |
|
|
2607 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
2608 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
|
|
2609 | } |
|
|
2610 | |
|
|
2611 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
2612 | ev_io_start (EV_A_ &w->io); |
|
|
2613 | |
|
|
2614 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
2615 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
2616 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
2617 | |
|
|
2618 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
2619 | |
991 | ev_start ((W)w, 1); |
2620 | ev_start (EV_A_ (W)w, 1); |
992 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
993 | } |
2621 | } |
994 | |
2622 | |
995 | void |
2623 | void |
996 | ev_child_stop (struct ev_child *w) |
2624 | ev_embed_stop (EV_P_ ev_embed *w) |
997 | { |
2625 | { |
998 | ev_clear_pending ((W)w); |
2626 | clear_pending (EV_A_ (W)w); |
999 | if (ev_is_active (w)) |
2627 | if (expect_false (!ev_is_active (w))) |
1000 | return; |
2628 | return; |
1001 | |
2629 | |
1002 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
2630 | ev_io_stop (EV_A_ &w->io); |
|
|
2631 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
2632 | |
1003 | ev_stop ((W)w); |
2633 | ev_stop (EV_A_ (W)w); |
1004 | } |
2634 | } |
|
|
2635 | #endif |
|
|
2636 | |
|
|
2637 | #if EV_FORK_ENABLE |
|
|
2638 | void |
|
|
2639 | ev_fork_start (EV_P_ ev_fork *w) |
|
|
2640 | { |
|
|
2641 | if (expect_false (ev_is_active (w))) |
|
|
2642 | return; |
|
|
2643 | |
|
|
2644 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
2645 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
2646 | forks [forkcnt - 1] = w; |
|
|
2647 | } |
|
|
2648 | |
|
|
2649 | void |
|
|
2650 | ev_fork_stop (EV_P_ ev_fork *w) |
|
|
2651 | { |
|
|
2652 | clear_pending (EV_A_ (W)w); |
|
|
2653 | if (expect_false (!ev_is_active (w))) |
|
|
2654 | return; |
|
|
2655 | |
|
|
2656 | { |
|
|
2657 | int active = ev_active (w); |
|
|
2658 | |
|
|
2659 | forks [active - 1] = forks [--forkcnt]; |
|
|
2660 | ev_active (forks [active - 1]) = active; |
|
|
2661 | } |
|
|
2662 | |
|
|
2663 | ev_stop (EV_A_ (W)w); |
|
|
2664 | } |
|
|
2665 | #endif |
|
|
2666 | |
|
|
2667 | #if EV_ASYNC_ENABLE |
|
|
2668 | void |
|
|
2669 | ev_async_start (EV_P_ ev_async *w) |
|
|
2670 | { |
|
|
2671 | if (expect_false (ev_is_active (w))) |
|
|
2672 | return; |
|
|
2673 | |
|
|
2674 | evpipe_init (EV_A); |
|
|
2675 | |
|
|
2676 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
2677 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
2678 | asyncs [asynccnt - 1] = w; |
|
|
2679 | } |
|
|
2680 | |
|
|
2681 | void |
|
|
2682 | ev_async_stop (EV_P_ ev_async *w) |
|
|
2683 | { |
|
|
2684 | clear_pending (EV_A_ (W)w); |
|
|
2685 | if (expect_false (!ev_is_active (w))) |
|
|
2686 | return; |
|
|
2687 | |
|
|
2688 | { |
|
|
2689 | int active = ev_active (w); |
|
|
2690 | |
|
|
2691 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
2692 | ev_active (asyncs [active - 1]) = active; |
|
|
2693 | } |
|
|
2694 | |
|
|
2695 | ev_stop (EV_A_ (W)w); |
|
|
2696 | } |
|
|
2697 | |
|
|
2698 | void |
|
|
2699 | ev_async_send (EV_P_ ev_async *w) |
|
|
2700 | { |
|
|
2701 | w->sent = 1; |
|
|
2702 | evpipe_write (EV_A_ &gotasync); |
|
|
2703 | } |
|
|
2704 | #endif |
1005 | |
2705 | |
1006 | /*****************************************************************************/ |
2706 | /*****************************************************************************/ |
1007 | |
2707 | |
1008 | struct ev_once |
2708 | struct ev_once |
1009 | { |
2709 | { |
1010 | struct ev_io io; |
2710 | ev_io io; |
1011 | struct ev_timer to; |
2711 | ev_timer to; |
1012 | void (*cb)(int revents, void *arg); |
2712 | void (*cb)(int revents, void *arg); |
1013 | void *arg; |
2713 | void *arg; |
1014 | }; |
2714 | }; |
1015 | |
2715 | |
1016 | static void |
2716 | static void |
1017 | once_cb (struct ev_once *once, int revents) |
2717 | once_cb (EV_P_ struct ev_once *once, int revents) |
1018 | { |
2718 | { |
1019 | void (*cb)(int revents, void *arg) = once->cb; |
2719 | void (*cb)(int revents, void *arg) = once->cb; |
1020 | void *arg = once->arg; |
2720 | void *arg = once->arg; |
1021 | |
2721 | |
1022 | ev_io_stop (&once->io); |
2722 | ev_io_stop (EV_A_ &once->io); |
1023 | ev_timer_stop (&once->to); |
2723 | ev_timer_stop (EV_A_ &once->to); |
1024 | free (once); |
2724 | ev_free (once); |
1025 | |
2725 | |
1026 | cb (revents, arg); |
2726 | cb (revents, arg); |
1027 | } |
2727 | } |
1028 | |
2728 | |
1029 | static void |
2729 | static void |
1030 | once_cb_io (struct ev_io *w, int revents) |
2730 | once_cb_io (EV_P_ ev_io *w, int revents) |
1031 | { |
2731 | { |
1032 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
2732 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1033 | } |
2733 | } |
1034 | |
2734 | |
1035 | static void |
2735 | static void |
1036 | once_cb_to (struct ev_timer *w, int revents) |
2736 | once_cb_to (EV_P_ ev_timer *w, int revents) |
1037 | { |
2737 | { |
1038 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
2738 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1039 | } |
2739 | } |
1040 | |
2740 | |
1041 | void |
2741 | void |
1042 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
2742 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1043 | { |
2743 | { |
1044 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
2744 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
1045 | |
2745 | |
1046 | if (!once) |
2746 | if (expect_false (!once)) |
|
|
2747 | { |
1047 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
2748 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
1048 | else |
2749 | return; |
1049 | { |
2750 | } |
|
|
2751 | |
1050 | once->cb = cb; |
2752 | once->cb = cb; |
1051 | once->arg = arg; |
2753 | once->arg = arg; |
1052 | |
2754 | |
1053 | ev_watcher_init (&once->io, once_cb_io); |
2755 | ev_init (&once->io, once_cb_io); |
1054 | if (fd >= 0) |
2756 | if (fd >= 0) |
1055 | { |
2757 | { |
1056 | ev_io_set (&once->io, fd, events); |
2758 | ev_io_set (&once->io, fd, events); |
1057 | ev_io_start (&once->io); |
2759 | ev_io_start (EV_A_ &once->io); |
1058 | } |
2760 | } |
1059 | |
2761 | |
1060 | ev_watcher_init (&once->to, once_cb_to); |
2762 | ev_init (&once->to, once_cb_to); |
1061 | if (timeout >= 0.) |
2763 | if (timeout >= 0.) |
1062 | { |
2764 | { |
1063 | ev_timer_set (&once->to, timeout, 0.); |
2765 | ev_timer_set (&once->to, timeout, 0.); |
1064 | ev_timer_start (&once->to); |
2766 | 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 | { |
2767 | } |
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 | } |
2768 | } |
1146 | |
2769 | |
|
|
2770 | #if EV_MULTIPLICITY |
|
|
2771 | #include "ev_wrap.h" |
1147 | #endif |
2772 | #endif |
1148 | |
2773 | |
|
|
2774 | #ifdef __cplusplus |
|
|
2775 | } |
|
|
2776 | #endif |
1149 | |
2777 | |
1150 | |
|
|
1151 | |
|
|