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) 2007,2008,2009 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_SYSCALL |
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53 | # ifndef EV_USE_CLOCK_SYSCALL |
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54 | # define EV_USE_CLOCK_SYSCALL 1 |
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55 | # ifndef EV_USE_REALTIME |
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56 | # define EV_USE_REALTIME 0 |
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57 | # endif |
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58 | # ifndef EV_USE_MONOTONIC |
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59 | # define EV_USE_MONOTONIC 1 |
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60 | # endif |
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61 | # endif |
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62 | # elif !defined(EV_USE_CLOCK_SYSCALL) |
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63 | # define EV_USE_CLOCK_SYSCALL 0 |
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64 | # endif |
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65 | |
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66 | # if HAVE_CLOCK_GETTIME |
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67 | # ifndef EV_USE_MONOTONIC |
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68 | # define EV_USE_MONOTONIC 1 |
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69 | # endif |
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70 | # ifndef EV_USE_REALTIME |
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71 | # define EV_USE_REALTIME 0 |
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72 | # endif |
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73 | # else |
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74 | # ifndef EV_USE_MONOTONIC |
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75 | # define EV_USE_MONOTONIC 0 |
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76 | # endif |
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77 | # ifndef EV_USE_REALTIME |
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78 | # define EV_USE_REALTIME 0 |
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79 | # endif |
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80 | # endif |
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81 | |
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82 | # ifndef EV_USE_NANOSLEEP |
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83 | # if HAVE_NANOSLEEP |
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84 | # define EV_USE_NANOSLEEP 1 |
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85 | # else |
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86 | # define EV_USE_NANOSLEEP 0 |
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87 | # endif |
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88 | # endif |
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89 | |
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90 | # ifndef EV_USE_SELECT |
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91 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
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92 | # define EV_USE_SELECT 1 |
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93 | # else |
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94 | # define EV_USE_SELECT 0 |
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95 | # endif |
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96 | # endif |
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97 | |
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98 | # ifndef EV_USE_POLL |
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99 | # if HAVE_POLL && HAVE_POLL_H |
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100 | # define EV_USE_POLL 1 |
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101 | # else |
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102 | # define EV_USE_POLL 0 |
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103 | # endif |
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104 | # endif |
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105 | |
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106 | # ifndef EV_USE_EPOLL |
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107 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
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108 | # define EV_USE_EPOLL 1 |
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109 | # else |
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110 | # define EV_USE_EPOLL 0 |
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111 | # endif |
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112 | # endif |
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113 | |
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114 | # ifndef EV_USE_KQUEUE |
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115 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
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116 | # define EV_USE_KQUEUE 1 |
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117 | # else |
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118 | # define EV_USE_KQUEUE 0 |
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119 | # endif |
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120 | # endif |
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121 | |
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122 | # ifndef EV_USE_PORT |
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123 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
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124 | # define EV_USE_PORT 1 |
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125 | # else |
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126 | # define EV_USE_PORT 0 |
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127 | # endif |
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128 | # endif |
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129 | |
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130 | # ifndef EV_USE_INOTIFY |
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131 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
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132 | # define EV_USE_INOTIFY 1 |
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133 | # else |
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134 | # define EV_USE_INOTIFY 0 |
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135 | # endif |
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136 | # endif |
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137 | |
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138 | # ifndef EV_USE_SIGNALFD |
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139 | # if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H |
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140 | # define EV_USE_SIGNALFD 1 |
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141 | # else |
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142 | # define EV_USE_SIGNALFD 0 |
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143 | # endif |
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144 | # endif |
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145 | |
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146 | # ifndef EV_USE_EVENTFD |
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147 | # if HAVE_EVENTFD |
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148 | # define EV_USE_EVENTFD 1 |
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149 | # else |
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150 | # define EV_USE_EVENTFD 0 |
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151 | # endif |
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152 | # endif |
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153 | |
33 | #endif |
154 | #endif |
34 | |
155 | |
35 | #include <math.h> |
156 | #include <math.h> |
36 | #include <stdlib.h> |
157 | #include <stdlib.h> |
37 | #include <unistd.h> |
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38 | #include <fcntl.h> |
158 | #include <fcntl.h> |
39 | #include <signal.h> |
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40 | #include <stddef.h> |
159 | #include <stddef.h> |
41 | |
160 | |
42 | #include <stdio.h> |
161 | #include <stdio.h> |
43 | |
162 | |
44 | #include <assert.h> |
163 | #include <assert.h> |
45 | #include <errno.h> |
164 | #include <errno.h> |
46 | #include <sys/types.h> |
165 | #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> |
166 | #include <time.h> |
50 | |
167 | |
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168 | #include <signal.h> |
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169 | |
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170 | #ifdef EV_H |
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171 | # include EV_H |
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172 | #else |
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173 | # include "ev.h" |
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174 | #endif |
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175 | |
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176 | #ifndef _WIN32 |
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177 | # include <sys/time.h> |
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178 | # include <sys/wait.h> |
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179 | # include <unistd.h> |
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180 | #else |
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181 | # include <io.h> |
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182 | # define WIN32_LEAN_AND_MEAN |
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183 | # include <windows.h> |
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184 | # ifndef EV_SELECT_IS_WINSOCKET |
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185 | # define EV_SELECT_IS_WINSOCKET 1 |
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186 | # endif |
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187 | #endif |
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188 | |
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189 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
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190 | |
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191 | /* try to deduce the maximum number of signals on this platform */ |
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192 | #if defined (EV_NSIG) |
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193 | /* use what's provided */ |
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194 | #elif defined (NSIG) |
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195 | # define EV_NSIG (NSIG) |
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196 | #elif defined(_NSIG) |
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197 | # define EV_NSIG (_NSIG) |
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198 | #elif defined (SIGMAX) |
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199 | # define EV_NSIG (SIGMAX+1) |
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200 | #elif defined (SIG_MAX) |
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201 | # define EV_NSIG (SIG_MAX+1) |
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202 | #elif defined (_SIG_MAX) |
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203 | # define EV_NSIG (_SIG_MAX+1) |
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204 | #elif defined (MAXSIG) |
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205 | # define EV_NSIG (MAXSIG+1) |
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206 | #elif defined (MAX_SIG) |
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207 | # define EV_NSIG (MAX_SIG+1) |
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208 | #elif defined (SIGARRAYSIZE) |
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209 | # define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */ |
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210 | #elif defined (_sys_nsig) |
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211 | # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
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212 | #else |
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213 | # error "unable to find value for NSIG, please report" |
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214 | /* to make it compile regardless, just remove the above line */ |
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215 | # define EV_NSIG 65 |
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216 | #endif |
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217 | |
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218 | #ifndef EV_USE_CLOCK_SYSCALL |
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219 | # if __linux && __GLIBC__ >= 2 |
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220 | # define EV_USE_CLOCK_SYSCALL 1 |
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221 | # else |
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222 | # define EV_USE_CLOCK_SYSCALL 0 |
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223 | # endif |
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224 | #endif |
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225 | |
51 | #ifndef EV_USE_MONOTONIC |
226 | #ifndef EV_USE_MONOTONIC |
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227 | # if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 |
52 | # define EV_USE_MONOTONIC 1 |
228 | # define EV_USE_MONOTONIC 1 |
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229 | # else |
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230 | # define EV_USE_MONOTONIC 0 |
53 | #endif |
231 | # endif |
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232 | #endif |
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233 | |
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234 | #ifndef EV_USE_REALTIME |
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235 | # define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL |
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236 | #endif |
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237 | |
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238 | #ifndef EV_USE_NANOSLEEP |
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239 | # if _POSIX_C_SOURCE >= 199309L |
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240 | # define EV_USE_NANOSLEEP 1 |
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241 | # else |
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242 | # define EV_USE_NANOSLEEP 0 |
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243 | # endif |
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244 | #endif |
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245 | |
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246 | #ifndef EV_USE_SELECT |
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247 | # define EV_USE_SELECT 1 |
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248 | #endif |
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249 | |
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250 | #ifndef EV_USE_POLL |
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251 | # ifdef _WIN32 |
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252 | # define EV_USE_POLL 0 |
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253 | # else |
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254 | # define EV_USE_POLL 1 |
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255 | # endif |
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256 | #endif |
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257 | |
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258 | #ifndef EV_USE_EPOLL |
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259 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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260 | # define EV_USE_EPOLL 1 |
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261 | # else |
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262 | # define EV_USE_EPOLL 0 |
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263 | # endif |
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264 | #endif |
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265 | |
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266 | #ifndef EV_USE_KQUEUE |
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267 | # define EV_USE_KQUEUE 0 |
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268 | #endif |
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269 | |
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270 | #ifndef EV_USE_PORT |
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271 | # define EV_USE_PORT 0 |
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272 | #endif |
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273 | |
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274 | #ifndef EV_USE_INOTIFY |
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275 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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276 | # define EV_USE_INOTIFY 1 |
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277 | # else |
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278 | # define EV_USE_INOTIFY 0 |
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279 | # endif |
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280 | #endif |
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281 | |
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282 | #ifndef EV_PID_HASHSIZE |
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283 | # if EV_MINIMAL |
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284 | # define EV_PID_HASHSIZE 1 |
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285 | # else |
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286 | # define EV_PID_HASHSIZE 16 |
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287 | # endif |
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288 | #endif |
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289 | |
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290 | #ifndef EV_INOTIFY_HASHSIZE |
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291 | # if EV_MINIMAL |
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292 | # define EV_INOTIFY_HASHSIZE 1 |
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293 | # else |
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294 | # define EV_INOTIFY_HASHSIZE 16 |
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295 | # endif |
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296 | #endif |
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297 | |
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298 | #ifndef EV_USE_EVENTFD |
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299 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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300 | # define EV_USE_EVENTFD 1 |
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301 | # else |
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302 | # define EV_USE_EVENTFD 0 |
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303 | # endif |
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304 | #endif |
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305 | |
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306 | #ifndef EV_USE_SIGNALFD |
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307 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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308 | # define EV_USE_SIGNALFD 1 |
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309 | # else |
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310 | # define EV_USE_SIGNALFD 0 |
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311 | # endif |
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312 | #endif |
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313 | |
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314 | #if 0 /* debugging */ |
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315 | # define EV_VERIFY 3 |
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316 | # define EV_USE_4HEAP 1 |
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317 | # define EV_HEAP_CACHE_AT 1 |
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318 | #endif |
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319 | |
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320 | #ifndef EV_VERIFY |
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321 | # define EV_VERIFY !EV_MINIMAL |
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322 | #endif |
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323 | |
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324 | #ifndef EV_USE_4HEAP |
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325 | # define EV_USE_4HEAP !EV_MINIMAL |
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326 | #endif |
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327 | |
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328 | #ifndef EV_HEAP_CACHE_AT |
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329 | # define EV_HEAP_CACHE_AT !EV_MINIMAL |
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330 | #endif |
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331 | |
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332 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
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333 | /* which makes programs even slower. might work on other unices, too. */ |
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334 | #if EV_USE_CLOCK_SYSCALL |
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335 | # include <syscall.h> |
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336 | # ifdef SYS_clock_gettime |
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337 | # define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
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338 | # undef EV_USE_MONOTONIC |
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339 | # define EV_USE_MONOTONIC 1 |
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340 | # else |
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341 | # undef EV_USE_CLOCK_SYSCALL |
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342 | # define EV_USE_CLOCK_SYSCALL 0 |
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343 | # endif |
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344 | #endif |
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345 | |
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346 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
54 | |
347 | |
55 | #ifndef CLOCK_MONOTONIC |
348 | #ifndef CLOCK_MONOTONIC |
56 | # undef EV_USE_MONOTONIC |
349 | # undef EV_USE_MONOTONIC |
57 | # define EV_USE_MONOTONIC 0 |
350 | # define EV_USE_MONOTONIC 0 |
58 | #endif |
351 | #endif |
59 | |
352 | |
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 |
353 | #ifndef CLOCK_REALTIME |
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354 | # undef EV_USE_REALTIME |
69 | # define EV_USE_REALTIME 0 |
355 | # define EV_USE_REALTIME 0 |
70 | #endif |
356 | #endif |
71 | #ifndef EV_USE_REALTIME |
357 | |
72 | # define EV_USE_REALTIME 1 /* posix requirement, but might be slower */ |
358 | #if !EV_STAT_ENABLE |
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359 | # undef EV_USE_INOTIFY |
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360 | # define EV_USE_INOTIFY 0 |
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361 | #endif |
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362 | |
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363 | #if !EV_USE_NANOSLEEP |
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364 | # ifndef _WIN32 |
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365 | # include <sys/select.h> |
73 | #endif |
366 | # endif |
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367 | #endif |
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368 | |
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369 | #if EV_USE_INOTIFY |
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370 | # include <sys/utsname.h> |
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371 | # include <sys/statfs.h> |
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372 | # include <sys/inotify.h> |
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373 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
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374 | # ifndef IN_DONT_FOLLOW |
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375 | # undef EV_USE_INOTIFY |
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376 | # define EV_USE_INOTIFY 0 |
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377 | # endif |
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378 | #endif |
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379 | |
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380 | #if EV_SELECT_IS_WINSOCKET |
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381 | # include <winsock.h> |
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382 | #endif |
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383 | |
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384 | #if EV_USE_EVENTFD |
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385 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
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386 | # include <stdint.h> |
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387 | # ifndef EFD_NONBLOCK |
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388 | # define EFD_NONBLOCK O_NONBLOCK |
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389 | # endif |
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390 | # ifndef EFD_CLOEXEC |
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391 | # ifdef O_CLOEXEC |
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392 | # define EFD_CLOEXEC O_CLOEXEC |
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393 | # else |
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394 | # define EFD_CLOEXEC 02000000 |
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395 | # endif |
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396 | # endif |
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397 | # ifdef __cplusplus |
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398 | extern "C" { |
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399 | # endif |
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400 | int eventfd (unsigned int initval, int flags); |
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401 | # ifdef __cplusplus |
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402 | } |
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403 | # endif |
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404 | #endif |
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405 | |
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406 | #if EV_USE_SIGNALFD |
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407 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
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408 | # include <stdint.h> |
|
|
409 | # ifndef SFD_NONBLOCK |
|
|
410 | # define SFD_NONBLOCK O_NONBLOCK |
|
|
411 | # endif |
|
|
412 | # ifndef SFD_CLOEXEC |
|
|
413 | # ifdef O_CLOEXEC |
|
|
414 | # define SFD_CLOEXEC O_CLOEXEC |
|
|
415 | # else |
|
|
416 | # define SFD_CLOEXEC 02000000 |
|
|
417 | # endif |
|
|
418 | # endif |
|
|
419 | # ifdef __cplusplus |
|
|
420 | extern "C" { |
|
|
421 | # endif |
|
|
422 | int signalfd (int fd, const sigset_t *mask, int flags); |
|
|
423 | |
|
|
424 | struct signalfd_siginfo |
|
|
425 | { |
|
|
426 | uint32_t ssi_signo; |
|
|
427 | char pad[128 - sizeof (uint32_t)]; |
|
|
428 | }; |
|
|
429 | # ifdef __cplusplus |
|
|
430 | } |
|
|
431 | # endif |
|
|
432 | #endif |
|
|
433 | |
|
|
434 | |
|
|
435 | /**/ |
|
|
436 | |
|
|
437 | #if EV_VERIFY >= 3 |
|
|
438 | # define EV_FREQUENT_CHECK ev_loop_verify (EV_A) |
|
|
439 | #else |
|
|
440 | # define EV_FREQUENT_CHECK do { } while (0) |
|
|
441 | #endif |
|
|
442 | |
|
|
443 | /* |
|
|
444 | * This is used to avoid floating point rounding problems. |
|
|
445 | * It is added to ev_rt_now when scheduling periodics |
|
|
446 | * to ensure progress, time-wise, even when rounding |
|
|
447 | * errors are against us. |
|
|
448 | * This value is good at least till the year 4000. |
|
|
449 | * Better solutions welcome. |
|
|
450 | */ |
|
|
451 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
74 | |
452 | |
75 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
453 | #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) */ |
454 | #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 */ |
|
|
78 | #define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ |
|
|
79 | |
455 | |
80 | #include "ev.h" |
456 | #if __GNUC__ >= 4 |
|
|
457 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
|
|
458 | # define noinline __attribute__ ((noinline)) |
|
|
459 | #else |
|
|
460 | # define expect(expr,value) (expr) |
|
|
461 | # define noinline |
|
|
462 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
|
|
463 | # define inline |
|
|
464 | # endif |
|
|
465 | #endif |
81 | |
466 | |
|
|
467 | #define expect_false(expr) expect ((expr) != 0, 0) |
|
|
468 | #define expect_true(expr) expect ((expr) != 0, 1) |
|
|
469 | #define inline_size static inline |
|
|
470 | |
|
|
471 | #if EV_MINIMAL |
|
|
472 | # define inline_speed static noinline |
|
|
473 | #else |
|
|
474 | # define inline_speed static inline |
|
|
475 | #endif |
|
|
476 | |
|
|
477 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
|
|
478 | |
|
|
479 | #if EV_MINPRI == EV_MAXPRI |
|
|
480 | # define ABSPRI(w) (((W)w), 0) |
|
|
481 | #else |
|
|
482 | # define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
|
|
483 | #endif |
|
|
484 | |
|
|
485 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
|
|
486 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
|
|
487 | |
82 | typedef struct ev_watcher *W; |
488 | typedef ev_watcher *W; |
83 | typedef struct ev_watcher_list *WL; |
489 | typedef ev_watcher_list *WL; |
84 | typedef struct ev_watcher_time *WT; |
490 | typedef ev_watcher_time *WT; |
85 | |
491 | |
86 | static ev_tstamp now, diff; /* monotonic clock */ |
492 | #define ev_active(w) ((W)(w))->active |
87 | ev_tstamp ev_now; |
493 | #define ev_at(w) ((WT)(w))->at |
88 | int ev_method; |
|
|
89 | |
494 | |
90 | static int have_monotonic; /* runtime */ |
495 | #if EV_USE_REALTIME |
|
|
496 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
|
|
497 | /* giving it a reasonably high chance of working on typical architetcures */ |
|
|
498 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
|
|
499 | #endif |
91 | |
500 | |
92 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
501 | #if EV_USE_MONOTONIC |
93 | static void (*method_modify)(int fd, int oev, int nev); |
502 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
94 | static void (*method_poll)(ev_tstamp timeout); |
503 | #endif |
|
|
504 | |
|
|
505 | #ifndef EV_FD_TO_WIN32_HANDLE |
|
|
506 | # define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
|
|
507 | #endif |
|
|
508 | #ifndef EV_WIN32_HANDLE_TO_FD |
|
|
509 | # define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0) |
|
|
510 | #endif |
|
|
511 | #ifndef EV_WIN32_CLOSE_FD |
|
|
512 | # define EV_WIN32_CLOSE_FD(fd) close (fd) |
|
|
513 | #endif |
|
|
514 | |
|
|
515 | #ifdef _WIN32 |
|
|
516 | # include "ev_win32.c" |
|
|
517 | #endif |
95 | |
518 | |
96 | /*****************************************************************************/ |
519 | /*****************************************************************************/ |
97 | |
520 | |
|
|
521 | static void (*syserr_cb)(const char *msg); |
|
|
522 | |
|
|
523 | void |
|
|
524 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
|
|
525 | { |
|
|
526 | syserr_cb = cb; |
|
|
527 | } |
|
|
528 | |
|
|
529 | static void noinline |
|
|
530 | ev_syserr (const char *msg) |
|
|
531 | { |
|
|
532 | if (!msg) |
|
|
533 | msg = "(libev) system error"; |
|
|
534 | |
|
|
535 | if (syserr_cb) |
|
|
536 | syserr_cb (msg); |
|
|
537 | else |
|
|
538 | { |
|
|
539 | perror (msg); |
|
|
540 | abort (); |
|
|
541 | } |
|
|
542 | } |
|
|
543 | |
|
|
544 | static void * |
|
|
545 | ev_realloc_emul (void *ptr, long size) |
|
|
546 | { |
|
|
547 | /* some systems, notably openbsd and darwin, fail to properly |
|
|
548 | * implement realloc (x, 0) (as required by both ansi c-98 and |
|
|
549 | * the single unix specification, so work around them here. |
|
|
550 | */ |
|
|
551 | |
|
|
552 | if (size) |
|
|
553 | return realloc (ptr, size); |
|
|
554 | |
|
|
555 | free (ptr); |
|
|
556 | return 0; |
|
|
557 | } |
|
|
558 | |
|
|
559 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
|
|
560 | |
|
|
561 | void |
|
|
562 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
|
|
563 | { |
|
|
564 | alloc = cb; |
|
|
565 | } |
|
|
566 | |
|
|
567 | inline_speed void * |
|
|
568 | ev_realloc (void *ptr, long size) |
|
|
569 | { |
|
|
570 | ptr = alloc (ptr, size); |
|
|
571 | |
|
|
572 | if (!ptr && size) |
|
|
573 | { |
|
|
574 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
|
|
575 | abort (); |
|
|
576 | } |
|
|
577 | |
|
|
578 | return ptr; |
|
|
579 | } |
|
|
580 | |
|
|
581 | #define ev_malloc(size) ev_realloc (0, (size)) |
|
|
582 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
|
|
583 | |
|
|
584 | /*****************************************************************************/ |
|
|
585 | |
|
|
586 | /* set in reify when reification needed */ |
|
|
587 | #define EV_ANFD_REIFY 1 |
|
|
588 | |
|
|
589 | /* file descriptor info structure */ |
|
|
590 | typedef struct |
|
|
591 | { |
|
|
592 | WL head; |
|
|
593 | unsigned char events; /* the events watched for */ |
|
|
594 | unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ |
|
|
595 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
|
|
596 | unsigned char unused; |
|
|
597 | #if EV_USE_EPOLL |
|
|
598 | unsigned int egen; /* generation counter to counter epoll bugs */ |
|
|
599 | #endif |
|
|
600 | #if EV_SELECT_IS_WINSOCKET |
|
|
601 | SOCKET handle; |
|
|
602 | #endif |
|
|
603 | } ANFD; |
|
|
604 | |
|
|
605 | /* stores the pending event set for a given watcher */ |
|
|
606 | typedef struct |
|
|
607 | { |
|
|
608 | W w; |
|
|
609 | int events; /* the pending event set for the given watcher */ |
|
|
610 | } ANPENDING; |
|
|
611 | |
|
|
612 | #if EV_USE_INOTIFY |
|
|
613 | /* hash table entry per inotify-id */ |
|
|
614 | typedef struct |
|
|
615 | { |
|
|
616 | WL head; |
|
|
617 | } ANFS; |
|
|
618 | #endif |
|
|
619 | |
|
|
620 | /* Heap Entry */ |
|
|
621 | #if EV_HEAP_CACHE_AT |
|
|
622 | /* a heap element */ |
|
|
623 | typedef struct { |
|
|
624 | ev_tstamp at; |
|
|
625 | WT w; |
|
|
626 | } ANHE; |
|
|
627 | |
|
|
628 | #define ANHE_w(he) (he).w /* access watcher, read-write */ |
|
|
629 | #define ANHE_at(he) (he).at /* access cached at, read-only */ |
|
|
630 | #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ |
|
|
631 | #else |
|
|
632 | /* a heap element */ |
|
|
633 | typedef WT ANHE; |
|
|
634 | |
|
|
635 | #define ANHE_w(he) (he) |
|
|
636 | #define ANHE_at(he) (he)->at |
|
|
637 | #define ANHE_at_cache(he) |
|
|
638 | #endif |
|
|
639 | |
|
|
640 | #if EV_MULTIPLICITY |
|
|
641 | |
|
|
642 | struct ev_loop |
|
|
643 | { |
|
|
644 | ev_tstamp ev_rt_now; |
|
|
645 | #define ev_rt_now ((loop)->ev_rt_now) |
|
|
646 | #define VAR(name,decl) decl; |
|
|
647 | #include "ev_vars.h" |
|
|
648 | #undef VAR |
|
|
649 | }; |
|
|
650 | #include "ev_wrap.h" |
|
|
651 | |
|
|
652 | static struct ev_loop default_loop_struct; |
|
|
653 | struct ev_loop *ev_default_loop_ptr; |
|
|
654 | |
|
|
655 | #else |
|
|
656 | |
|
|
657 | ev_tstamp ev_rt_now; |
|
|
658 | #define VAR(name,decl) static decl; |
|
|
659 | #include "ev_vars.h" |
|
|
660 | #undef VAR |
|
|
661 | |
|
|
662 | static int ev_default_loop_ptr; |
|
|
663 | |
|
|
664 | #endif |
|
|
665 | |
|
|
666 | #if EV_MINIMAL < 2 |
|
|
667 | # define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) |
|
|
668 | # define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) |
|
|
669 | # define EV_INVOKE_PENDING invoke_cb (EV_A) |
|
|
670 | #else |
|
|
671 | # define EV_RELEASE_CB (void)0 |
|
|
672 | # define EV_ACQUIRE_CB (void)0 |
|
|
673 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
|
|
674 | #endif |
|
|
675 | |
|
|
676 | #define EVUNLOOP_RECURSE 0x80 |
|
|
677 | |
|
|
678 | /*****************************************************************************/ |
|
|
679 | |
|
|
680 | #ifndef EV_HAVE_EV_TIME |
98 | ev_tstamp |
681 | ev_tstamp |
99 | ev_time (void) |
682 | ev_time (void) |
100 | { |
683 | { |
101 | #if EV_USE_REALTIME |
684 | #if EV_USE_REALTIME |
|
|
685 | if (expect_true (have_realtime)) |
|
|
686 | { |
102 | struct timespec ts; |
687 | struct timespec ts; |
103 | clock_gettime (CLOCK_REALTIME, &ts); |
688 | clock_gettime (CLOCK_REALTIME, &ts); |
104 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
689 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
105 | #else |
690 | } |
|
|
691 | #endif |
|
|
692 | |
106 | struct timeval tv; |
693 | struct timeval tv; |
107 | gettimeofday (&tv, 0); |
694 | gettimeofday (&tv, 0); |
108 | return tv.tv_sec + tv.tv_usec * 1e-6; |
695 | return tv.tv_sec + tv.tv_usec * 1e-6; |
109 | #endif |
|
|
110 | } |
696 | } |
|
|
697 | #endif |
111 | |
698 | |
112 | static ev_tstamp |
699 | inline_size ev_tstamp |
113 | get_clock (void) |
700 | get_clock (void) |
114 | { |
701 | { |
115 | #if EV_USE_MONOTONIC |
702 | #if EV_USE_MONOTONIC |
116 | if (have_monotonic) |
703 | if (expect_true (have_monotonic)) |
117 | { |
704 | { |
118 | struct timespec ts; |
705 | struct timespec ts; |
119 | clock_gettime (CLOCK_MONOTONIC, &ts); |
706 | clock_gettime (CLOCK_MONOTONIC, &ts); |
120 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
707 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
121 | } |
708 | } |
122 | #endif |
709 | #endif |
123 | |
710 | |
124 | return ev_time (); |
711 | return ev_time (); |
125 | } |
712 | } |
126 | |
713 | |
127 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
714 | #if EV_MULTIPLICITY |
|
|
715 | ev_tstamp |
|
|
716 | ev_now (EV_P) |
|
|
717 | { |
|
|
718 | return ev_rt_now; |
|
|
719 | } |
|
|
720 | #endif |
128 | |
721 | |
129 | #define array_needsize(base,cur,cnt,init) \ |
722 | void |
130 | if ((cnt) > cur) \ |
723 | ev_sleep (ev_tstamp delay) |
131 | { \ |
724 | { |
132 | int newcnt = cur; \ |
725 | 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 | } |
726 | { |
|
|
727 | #if EV_USE_NANOSLEEP |
|
|
728 | struct timespec ts; |
|
|
729 | |
|
|
730 | ts.tv_sec = (time_t)delay; |
|
|
731 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
|
|
732 | |
|
|
733 | nanosleep (&ts, 0); |
|
|
734 | #elif defined(_WIN32) |
|
|
735 | Sleep ((unsigned long)(delay * 1e3)); |
|
|
736 | #else |
|
|
737 | struct timeval tv; |
|
|
738 | |
|
|
739 | tv.tv_sec = (time_t)delay; |
|
|
740 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
|
|
741 | |
|
|
742 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
|
|
743 | /* something not guaranteed by newer posix versions, but guaranteed */ |
|
|
744 | /* by older ones */ |
|
|
745 | select (0, 0, 0, 0, &tv); |
|
|
746 | #endif |
|
|
747 | } |
|
|
748 | } |
143 | |
749 | |
144 | /*****************************************************************************/ |
750 | /*****************************************************************************/ |
145 | |
751 | |
146 | typedef struct |
752 | #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 | |
753 | |
153 | static ANFD *anfds; |
754 | /* find a suitable new size for the given array, */ |
154 | static int anfdmax; |
755 | /* hopefully by rounding to a ncie-to-malloc size */ |
155 | |
756 | inline_size int |
156 | static void |
757 | array_nextsize (int elem, int cur, int cnt) |
157 | anfds_init (ANFD *base, int count) |
|
|
158 | { |
758 | { |
159 | while (count--) |
759 | int ncur = cur + 1; |
160 | { |
|
|
161 | base->head = 0; |
|
|
162 | base->events = EV_NONE; |
|
|
163 | base->reify = 0; |
|
|
164 | |
760 | |
165 | ++base; |
761 | do |
|
|
762 | ncur <<= 1; |
|
|
763 | while (cnt > ncur); |
|
|
764 | |
|
|
765 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ |
|
|
766 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
166 | } |
767 | { |
167 | } |
768 | ncur *= elem; |
168 | |
769 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
169 | typedef struct |
770 | ncur = ncur - sizeof (void *) * 4; |
170 | { |
771 | ncur /= elem; |
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 | { |
772 | } |
|
|
773 | |
|
|
774 | return ncur; |
|
|
775 | } |
|
|
776 | |
|
|
777 | static noinline void * |
|
|
778 | array_realloc (int elem, void *base, int *cur, int cnt) |
|
|
779 | { |
|
|
780 | *cur = array_nextsize (elem, *cur, cnt); |
|
|
781 | return ev_realloc (base, elem * *cur); |
|
|
782 | } |
|
|
783 | |
|
|
784 | #define array_init_zero(base,count) \ |
|
|
785 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
|
|
786 | |
|
|
787 | #define array_needsize(type,base,cur,cnt,init) \ |
|
|
788 | if (expect_false ((cnt) > (cur))) \ |
|
|
789 | { \ |
|
|
790 | int ocur_ = (cur); \ |
|
|
791 | (base) = (type *)array_realloc \ |
|
|
792 | (sizeof (type), (base), &(cur), (cnt)); \ |
|
|
793 | init ((base) + (ocur_), (cur) - ocur_); \ |
|
|
794 | } |
|
|
795 | |
|
|
796 | #if 0 |
|
|
797 | #define array_slim(type,stem) \ |
|
|
798 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
|
|
799 | { \ |
|
|
800 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
|
|
801 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
|
|
802 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
|
|
803 | } |
|
|
804 | #endif |
|
|
805 | |
|
|
806 | #define array_free(stem, idx) \ |
|
|
807 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 |
|
|
808 | |
|
|
809 | /*****************************************************************************/ |
|
|
810 | |
|
|
811 | /* dummy callback for pending events */ |
|
|
812 | static void noinline |
|
|
813 | pendingcb (EV_P_ ev_prepare *w, int revents) |
|
|
814 | { |
|
|
815 | } |
|
|
816 | |
|
|
817 | void noinline |
|
|
818 | ev_feed_event (EV_P_ void *w, int revents) |
|
|
819 | { |
|
|
820 | W w_ = (W)w; |
|
|
821 | int pri = ABSPRI (w_); |
|
|
822 | |
|
|
823 | if (expect_false (w_->pending)) |
|
|
824 | pendings [pri][w_->pending - 1].events |= revents; |
|
|
825 | else |
|
|
826 | { |
|
|
827 | w_->pending = ++pendingcnt [pri]; |
|
|
828 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
|
|
829 | pendings [pri][w_->pending - 1].w = w_; |
183 | pendings [w->pending - 1].events |= events; |
830 | pendings [pri][w_->pending - 1].events = revents; |
184 | return; |
|
|
185 | } |
831 | } |
186 | |
|
|
187 | w->pending = ++pendingcnt; |
|
|
188 | array_needsize (pendings, pendingmax, pendingcnt, ); |
|
|
189 | pendings [pendingcnt - 1].w = w; |
|
|
190 | pendings [pendingcnt - 1].events = events; |
|
|
191 | } |
832 | } |
192 | |
833 | |
193 | static void |
834 | inline_speed void |
|
|
835 | feed_reverse (EV_P_ W w) |
|
|
836 | { |
|
|
837 | array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); |
|
|
838 | rfeeds [rfeedcnt++] = w; |
|
|
839 | } |
|
|
840 | |
|
|
841 | inline_size void |
|
|
842 | feed_reverse_done (EV_P_ int revents) |
|
|
843 | { |
|
|
844 | do |
|
|
845 | ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents); |
|
|
846 | while (rfeedcnt); |
|
|
847 | } |
|
|
848 | |
|
|
849 | inline_speed void |
194 | queue_events (W *events, int eventcnt, int type) |
850 | queue_events (EV_P_ W *events, int eventcnt, int type) |
195 | { |
851 | { |
196 | int i; |
852 | int i; |
197 | |
853 | |
198 | for (i = 0; i < eventcnt; ++i) |
854 | for (i = 0; i < eventcnt; ++i) |
199 | event (events [i], type); |
855 | ev_feed_event (EV_A_ events [i], type); |
200 | } |
856 | } |
201 | |
857 | |
202 | static void |
858 | /*****************************************************************************/ |
|
|
859 | |
|
|
860 | inline_speed void |
203 | fd_event (int fd, int events) |
861 | fd_event_nc (EV_P_ int fd, int revents) |
204 | { |
862 | { |
205 | ANFD *anfd = anfds + fd; |
863 | ANFD *anfd = anfds + fd; |
206 | struct ev_io *w; |
864 | ev_io *w; |
207 | |
865 | |
208 | for (w = anfd->head; w; w = w->next) |
866 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
209 | { |
867 | { |
210 | int ev = w->events & events; |
868 | int ev = w->events & revents; |
211 | |
869 | |
212 | if (ev) |
870 | if (ev) |
213 | event ((W)w, ev); |
871 | ev_feed_event (EV_A_ (W)w, ev); |
214 | } |
872 | } |
215 | } |
873 | } |
216 | |
874 | |
217 | /*****************************************************************************/ |
875 | /* do not submit kernel events for fds that have reify set */ |
|
|
876 | /* because that means they changed while we were polling for new events */ |
|
|
877 | inline_speed void |
|
|
878 | fd_event (EV_P_ int fd, int revents) |
|
|
879 | { |
|
|
880 | ANFD *anfd = anfds + fd; |
218 | |
881 | |
219 | static int *fdchanges; |
882 | if (expect_true (!anfd->reify)) |
220 | static int fdchangemax, fdchangecnt; |
883 | fd_event_nc (EV_A_ fd, revents); |
|
|
884 | } |
221 | |
885 | |
222 | static void |
886 | void |
223 | fd_reify (void) |
887 | ev_feed_fd_event (EV_P_ int fd, int revents) |
|
|
888 | { |
|
|
889 | if (fd >= 0 && fd < anfdmax) |
|
|
890 | fd_event_nc (EV_A_ fd, revents); |
|
|
891 | } |
|
|
892 | |
|
|
893 | /* make sure the external fd watch events are in-sync */ |
|
|
894 | /* with the kernel/libev internal state */ |
|
|
895 | inline_size void |
|
|
896 | fd_reify (EV_P) |
224 | { |
897 | { |
225 | int i; |
898 | int i; |
226 | |
899 | |
227 | for (i = 0; i < fdchangecnt; ++i) |
900 | for (i = 0; i < fdchangecnt; ++i) |
228 | { |
901 | { |
229 | int fd = fdchanges [i]; |
902 | int fd = fdchanges [i]; |
230 | ANFD *anfd = anfds + fd; |
903 | ANFD *anfd = anfds + fd; |
231 | struct ev_io *w; |
904 | ev_io *w; |
232 | |
905 | |
233 | int events = 0; |
906 | unsigned char events = 0; |
234 | |
907 | |
235 | for (w = anfd->head; w; w = w->next) |
908 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
236 | events |= w->events; |
909 | events |= (unsigned char)w->events; |
237 | |
910 | |
238 | anfd->reify = 0; |
911 | #if EV_SELECT_IS_WINSOCKET |
239 | |
912 | if (events) |
240 | if (anfd->events != events) |
|
|
241 | { |
913 | { |
242 | method_modify (fd, anfd->events, events); |
914 | unsigned long arg; |
243 | anfd->events = events; |
915 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
916 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
244 | } |
917 | } |
|
|
918 | #endif |
|
|
919 | |
|
|
920 | { |
|
|
921 | unsigned char o_events = anfd->events; |
|
|
922 | unsigned char o_reify = anfd->reify; |
|
|
923 | |
|
|
924 | anfd->reify = 0; |
|
|
925 | anfd->events = events; |
|
|
926 | |
|
|
927 | if (o_events != events || o_reify & EV__IOFDSET) |
|
|
928 | backend_modify (EV_A_ fd, o_events, events); |
|
|
929 | } |
245 | } |
930 | } |
246 | |
931 | |
247 | fdchangecnt = 0; |
932 | fdchangecnt = 0; |
248 | } |
933 | } |
249 | |
934 | |
250 | static void |
935 | /* something about the given fd changed */ |
251 | fd_change (int fd) |
936 | inline_size void |
|
|
937 | fd_change (EV_P_ int fd, int flags) |
252 | { |
938 | { |
253 | if (anfds [fd].reify || fdchangecnt < 0) |
939 | unsigned char reify = anfds [fd].reify; |
254 | return; |
|
|
255 | |
|
|
256 | anfds [fd].reify = 1; |
940 | anfds [fd].reify |= flags; |
257 | |
941 | |
|
|
942 | if (expect_true (!reify)) |
|
|
943 | { |
258 | ++fdchangecnt; |
944 | ++fdchangecnt; |
259 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
945 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
260 | fdchanges [fdchangecnt - 1] = fd; |
946 | fdchanges [fdchangecnt - 1] = fd; |
|
|
947 | } |
|
|
948 | } |
|
|
949 | |
|
|
950 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
|
|
951 | inline_speed void |
|
|
952 | fd_kill (EV_P_ int fd) |
|
|
953 | { |
|
|
954 | ev_io *w; |
|
|
955 | |
|
|
956 | while ((w = (ev_io *)anfds [fd].head)) |
|
|
957 | { |
|
|
958 | ev_io_stop (EV_A_ w); |
|
|
959 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
960 | } |
|
|
961 | } |
|
|
962 | |
|
|
963 | /* check whether the given fd is atcually valid, for error recovery */ |
|
|
964 | inline_size int |
|
|
965 | fd_valid (int fd) |
|
|
966 | { |
|
|
967 | #ifdef _WIN32 |
|
|
968 | return _get_osfhandle (fd) != -1; |
|
|
969 | #else |
|
|
970 | return fcntl (fd, F_GETFD) != -1; |
|
|
971 | #endif |
261 | } |
972 | } |
262 | |
973 | |
263 | /* called on EBADF to verify fds */ |
974 | /* called on EBADF to verify fds */ |
264 | static void |
975 | static void noinline |
265 | fd_recheck (void) |
976 | fd_ebadf (EV_P) |
266 | { |
977 | { |
267 | int fd; |
978 | int fd; |
268 | |
979 | |
269 | for (fd = 0; fd < anfdmax; ++fd) |
980 | for (fd = 0; fd < anfdmax; ++fd) |
270 | if (anfds [fd].events) |
981 | if (anfds [fd].events) |
271 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
982 | if (!fd_valid (fd) && errno == EBADF) |
272 | while (anfds [fd].head) |
983 | fd_kill (EV_A_ fd); |
|
|
984 | } |
|
|
985 | |
|
|
986 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
987 | static void noinline |
|
|
988 | fd_enomem (EV_P) |
|
|
989 | { |
|
|
990 | int fd; |
|
|
991 | |
|
|
992 | for (fd = anfdmax; fd--; ) |
|
|
993 | if (anfds [fd].events) |
|
|
994 | { |
|
|
995 | fd_kill (EV_A_ fd); |
|
|
996 | break; |
|
|
997 | } |
|
|
998 | } |
|
|
999 | |
|
|
1000 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
|
|
1001 | static void noinline |
|
|
1002 | fd_rearm_all (EV_P) |
|
|
1003 | { |
|
|
1004 | int fd; |
|
|
1005 | |
|
|
1006 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
1007 | if (anfds [fd].events) |
|
|
1008 | { |
|
|
1009 | anfds [fd].events = 0; |
|
|
1010 | anfds [fd].emask = 0; |
|
|
1011 | fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); |
|
|
1012 | } |
|
|
1013 | } |
|
|
1014 | |
|
|
1015 | /*****************************************************************************/ |
|
|
1016 | |
|
|
1017 | /* |
|
|
1018 | * the heap functions want a real array index. array index 0 uis guaranteed to not |
|
|
1019 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
|
|
1020 | * the branching factor of the d-tree. |
|
|
1021 | */ |
|
|
1022 | |
|
|
1023 | /* |
|
|
1024 | * at the moment we allow libev the luxury of two heaps, |
|
|
1025 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
|
|
1026 | * which is more cache-efficient. |
|
|
1027 | * the difference is about 5% with 50000+ watchers. |
|
|
1028 | */ |
|
|
1029 | #if EV_USE_4HEAP |
|
|
1030 | |
|
|
1031 | #define DHEAP 4 |
|
|
1032 | #define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
|
|
1033 | #define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) |
|
|
1034 | #define UPHEAP_DONE(p,k) ((p) == (k)) |
|
|
1035 | |
|
|
1036 | /* away from the root */ |
|
|
1037 | inline_speed void |
|
|
1038 | downheap (ANHE *heap, int N, int k) |
|
|
1039 | { |
|
|
1040 | ANHE he = heap [k]; |
|
|
1041 | ANHE *E = heap + N + HEAP0; |
|
|
1042 | |
|
|
1043 | for (;;) |
|
|
1044 | { |
|
|
1045 | ev_tstamp minat; |
|
|
1046 | ANHE *minpos; |
|
|
1047 | ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; |
|
|
1048 | |
|
|
1049 | /* find minimum child */ |
|
|
1050 | if (expect_true (pos + DHEAP - 1 < E)) |
|
|
1051 | { |
|
|
1052 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
1053 | if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
1054 | if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
1055 | if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
1056 | } |
|
|
1057 | else if (pos < E) |
|
|
1058 | { |
|
|
1059 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
1060 | if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
1061 | if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
1062 | if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
1063 | } |
|
|
1064 | else |
|
|
1065 | break; |
|
|
1066 | |
|
|
1067 | if (ANHE_at (he) <= minat) |
|
|
1068 | break; |
|
|
1069 | |
|
|
1070 | heap [k] = *minpos; |
|
|
1071 | ev_active (ANHE_w (*minpos)) = k; |
|
|
1072 | |
|
|
1073 | k = minpos - heap; |
|
|
1074 | } |
|
|
1075 | |
|
|
1076 | heap [k] = he; |
|
|
1077 | ev_active (ANHE_w (he)) = k; |
|
|
1078 | } |
|
|
1079 | |
|
|
1080 | #else /* 4HEAP */ |
|
|
1081 | |
|
|
1082 | #define HEAP0 1 |
|
|
1083 | #define HPARENT(k) ((k) >> 1) |
|
|
1084 | #define UPHEAP_DONE(p,k) (!(p)) |
|
|
1085 | |
|
|
1086 | /* away from the root */ |
|
|
1087 | inline_speed void |
|
|
1088 | downheap (ANHE *heap, int N, int k) |
|
|
1089 | { |
|
|
1090 | ANHE he = heap [k]; |
|
|
1091 | |
|
|
1092 | for (;;) |
|
|
1093 | { |
|
|
1094 | int c = k << 1; |
|
|
1095 | |
|
|
1096 | if (c >= N + HEAP0) |
|
|
1097 | break; |
|
|
1098 | |
|
|
1099 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
|
|
1100 | ? 1 : 0; |
|
|
1101 | |
|
|
1102 | if (ANHE_at (he) <= ANHE_at (heap [c])) |
|
|
1103 | break; |
|
|
1104 | |
|
|
1105 | heap [k] = heap [c]; |
|
|
1106 | ev_active (ANHE_w (heap [k])) = k; |
|
|
1107 | |
|
|
1108 | k = c; |
|
|
1109 | } |
|
|
1110 | |
|
|
1111 | heap [k] = he; |
|
|
1112 | ev_active (ANHE_w (he)) = k; |
|
|
1113 | } |
|
|
1114 | #endif |
|
|
1115 | |
|
|
1116 | /* towards the root */ |
|
|
1117 | inline_speed void |
|
|
1118 | upheap (ANHE *heap, int k) |
|
|
1119 | { |
|
|
1120 | ANHE he = heap [k]; |
|
|
1121 | |
|
|
1122 | for (;;) |
|
|
1123 | { |
|
|
1124 | int p = HPARENT (k); |
|
|
1125 | |
|
|
1126 | if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he)) |
|
|
1127 | break; |
|
|
1128 | |
|
|
1129 | heap [k] = heap [p]; |
|
|
1130 | ev_active (ANHE_w (heap [k])) = k; |
|
|
1131 | k = p; |
|
|
1132 | } |
|
|
1133 | |
|
|
1134 | heap [k] = he; |
|
|
1135 | ev_active (ANHE_w (he)) = k; |
|
|
1136 | } |
|
|
1137 | |
|
|
1138 | /* move an element suitably so it is in a correct place */ |
|
|
1139 | inline_size void |
|
|
1140 | adjustheap (ANHE *heap, int N, int k) |
|
|
1141 | { |
|
|
1142 | if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)])) |
|
|
1143 | upheap (heap, k); |
|
|
1144 | else |
|
|
1145 | downheap (heap, N, k); |
|
|
1146 | } |
|
|
1147 | |
|
|
1148 | /* rebuild the heap: this function is used only once and executed rarely */ |
|
|
1149 | inline_size void |
|
|
1150 | reheap (ANHE *heap, int N) |
|
|
1151 | { |
|
|
1152 | int i; |
|
|
1153 | |
|
|
1154 | /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ |
|
|
1155 | /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ |
|
|
1156 | for (i = 0; i < N; ++i) |
|
|
1157 | upheap (heap, i + HEAP0); |
|
|
1158 | } |
|
|
1159 | |
|
|
1160 | /*****************************************************************************/ |
|
|
1161 | |
|
|
1162 | /* associate signal watchers to a signal signal */ |
|
|
1163 | typedef struct |
|
|
1164 | { |
|
|
1165 | EV_ATOMIC_T pending; |
|
|
1166 | #if EV_MULTIPLICITY |
|
|
1167 | EV_P; |
|
|
1168 | #endif |
|
|
1169 | WL head; |
|
|
1170 | } ANSIG; |
|
|
1171 | |
|
|
1172 | static ANSIG signals [EV_NSIG - 1]; |
|
|
1173 | |
|
|
1174 | /*****************************************************************************/ |
|
|
1175 | |
|
|
1176 | /* used to prepare libev internal fd's */ |
|
|
1177 | /* this is not fork-safe */ |
|
|
1178 | inline_speed void |
|
|
1179 | fd_intern (int fd) |
|
|
1180 | { |
|
|
1181 | #ifdef _WIN32 |
|
|
1182 | unsigned long arg = 1; |
|
|
1183 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
1184 | #else |
|
|
1185 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
1186 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
1187 | #endif |
|
|
1188 | } |
|
|
1189 | |
|
|
1190 | static void noinline |
|
|
1191 | evpipe_init (EV_P) |
|
|
1192 | { |
|
|
1193 | if (!ev_is_active (&pipe_w)) |
|
|
1194 | { |
|
|
1195 | #if EV_USE_EVENTFD |
|
|
1196 | evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
|
|
1197 | if (evfd < 0 && errno == EINVAL) |
|
|
1198 | evfd = eventfd (0, 0); |
|
|
1199 | |
|
|
1200 | if (evfd >= 0) |
|
|
1201 | { |
|
|
1202 | evpipe [0] = -1; |
|
|
1203 | fd_intern (evfd); /* doing it twice doesn't hurt */ |
|
|
1204 | ev_io_set (&pipe_w, evfd, EV_READ); |
|
|
1205 | } |
|
|
1206 | else |
|
|
1207 | #endif |
|
|
1208 | { |
|
|
1209 | while (pipe (evpipe)) |
|
|
1210 | ev_syserr ("(libev) error creating signal/async pipe"); |
|
|
1211 | |
|
|
1212 | fd_intern (evpipe [0]); |
|
|
1213 | fd_intern (evpipe [1]); |
|
|
1214 | ev_io_set (&pipe_w, evpipe [0], EV_READ); |
|
|
1215 | } |
|
|
1216 | |
|
|
1217 | ev_io_start (EV_A_ &pipe_w); |
|
|
1218 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
1219 | } |
|
|
1220 | } |
|
|
1221 | |
|
|
1222 | inline_size void |
|
|
1223 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
1224 | { |
|
|
1225 | if (!*flag) |
|
|
1226 | { |
|
|
1227 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
1228 | |
|
|
1229 | *flag = 1; |
|
|
1230 | |
|
|
1231 | #if EV_USE_EVENTFD |
|
|
1232 | if (evfd >= 0) |
|
|
1233 | { |
|
|
1234 | uint64_t counter = 1; |
|
|
1235 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
1236 | } |
|
|
1237 | else |
|
|
1238 | #endif |
|
|
1239 | write (evpipe [1], &old_errno, 1); |
|
|
1240 | |
|
|
1241 | errno = old_errno; |
|
|
1242 | } |
|
|
1243 | } |
|
|
1244 | |
|
|
1245 | /* called whenever the libev signal pipe */ |
|
|
1246 | /* got some events (signal, async) */ |
|
|
1247 | static void |
|
|
1248 | pipecb (EV_P_ ev_io *iow, int revents) |
|
|
1249 | { |
|
|
1250 | int i; |
|
|
1251 | |
|
|
1252 | #if EV_USE_EVENTFD |
|
|
1253 | if (evfd >= 0) |
|
|
1254 | { |
|
|
1255 | uint64_t counter; |
|
|
1256 | read (evfd, &counter, sizeof (uint64_t)); |
|
|
1257 | } |
|
|
1258 | else |
|
|
1259 | #endif |
|
|
1260 | { |
|
|
1261 | char dummy; |
|
|
1262 | read (evpipe [0], &dummy, 1); |
|
|
1263 | } |
|
|
1264 | |
|
|
1265 | if (sig_pending) |
|
|
1266 | { |
|
|
1267 | sig_pending = 0; |
|
|
1268 | |
|
|
1269 | for (i = EV_NSIG - 1; i--; ) |
|
|
1270 | if (expect_false (signals [i].pending)) |
|
|
1271 | ev_feed_signal_event (EV_A_ i + 1); |
|
|
1272 | } |
|
|
1273 | |
|
|
1274 | #if EV_ASYNC_ENABLE |
|
|
1275 | if (async_pending) |
|
|
1276 | { |
|
|
1277 | async_pending = 0; |
|
|
1278 | |
|
|
1279 | for (i = asynccnt; i--; ) |
|
|
1280 | if (asyncs [i]->sent) |
273 | { |
1281 | { |
274 | ev_io_stop (anfds [fd].head); |
1282 | asyncs [i]->sent = 0; |
275 | event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE); |
1283 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
276 | } |
1284 | } |
|
|
1285 | } |
|
|
1286 | #endif |
277 | } |
1287 | } |
278 | |
1288 | |
279 | /*****************************************************************************/ |
1289 | /*****************************************************************************/ |
280 | |
1290 | |
281 | static struct ev_timer **timers; |
|
|
282 | static int timermax, timercnt; |
|
|
283 | |
|
|
284 | static struct ev_periodic **periodics; |
|
|
285 | static int periodicmax, periodiccnt; |
|
|
286 | |
|
|
287 | static void |
1291 | static void |
288 | upheap (WT *timers, int k) |
1292 | ev_sighandler (int signum) |
289 | { |
1293 | { |
290 | WT w = timers [k]; |
1294 | #if EV_MULTIPLICITY |
|
|
1295 | EV_P = signals [signum - 1].loop; |
|
|
1296 | #endif |
291 | |
1297 | |
292 | while (k && timers [k >> 1]->at > w->at) |
1298 | #if _WIN32 |
293 | { |
1299 | signal (signum, ev_sighandler); |
294 | timers [k] = timers [k >> 1]; |
1300 | #endif |
295 | timers [k]->active = k + 1; |
|
|
296 | k >>= 1; |
|
|
297 | } |
|
|
298 | |
1301 | |
299 | timers [k] = w; |
1302 | signals [signum - 1].pending = 1; |
300 | timers [k]->active = k + 1; |
1303 | evpipe_write (EV_A_ &sig_pending); |
301 | |
|
|
302 | } |
1304 | } |
303 | |
1305 | |
|
|
1306 | void noinline |
|
|
1307 | ev_feed_signal_event (EV_P_ int signum) |
|
|
1308 | { |
|
|
1309 | WL w; |
|
|
1310 | |
|
|
1311 | if (expect_false (signum <= 0 || signum > EV_NSIG)) |
|
|
1312 | return; |
|
|
1313 | |
|
|
1314 | --signum; |
|
|
1315 | |
|
|
1316 | #if EV_MULTIPLICITY |
|
|
1317 | /* it is permissible to try to feed a signal to the wrong loop */ |
|
|
1318 | /* or, likely more useful, feeding a signal nobody is waiting for */ |
|
|
1319 | |
|
|
1320 | if (expect_false (signals [signum].loop != EV_A)) |
|
|
1321 | return; |
|
|
1322 | #endif |
|
|
1323 | |
|
|
1324 | signals [signum].pending = 0; |
|
|
1325 | |
|
|
1326 | for (w = signals [signum].head; w; w = w->next) |
|
|
1327 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
1328 | } |
|
|
1329 | |
|
|
1330 | #if EV_USE_SIGNALFD |
304 | static void |
1331 | static void |
305 | downheap (WT *timers, int N, int k) |
1332 | sigfdcb (EV_P_ ev_io *iow, int revents) |
306 | { |
1333 | { |
307 | WT w = timers [k]; |
1334 | struct signalfd_siginfo si[2], *sip; /* these structs are big */ |
308 | |
1335 | |
309 | while (k < (N >> 1)) |
1336 | for (;;) |
310 | { |
1337 | { |
311 | int j = k << 1; |
1338 | ssize_t res = read (sigfd, si, sizeof (si)); |
312 | |
1339 | |
313 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
1340 | /* not ISO-C, as res might be -1, but works with SuS */ |
314 | ++j; |
1341 | for (sip = si; (char *)sip < (char *)si + res; ++sip) |
|
|
1342 | ev_feed_signal_event (EV_A_ sip->ssi_signo); |
315 | |
1343 | |
316 | if (w->at <= timers [j]->at) |
1344 | if (res < (ssize_t)sizeof (si)) |
317 | break; |
1345 | break; |
318 | |
|
|
319 | timers [k] = timers [j]; |
|
|
320 | timers [k]->active = k + 1; |
|
|
321 | k = j; |
|
|
322 | } |
1346 | } |
323 | |
|
|
324 | timers [k] = w; |
|
|
325 | timers [k]->active = k + 1; |
|
|
326 | } |
1347 | } |
|
|
1348 | #endif |
327 | |
1349 | |
328 | /*****************************************************************************/ |
1350 | /*****************************************************************************/ |
329 | |
1351 | |
330 | typedef struct |
1352 | static WL childs [EV_PID_HASHSIZE]; |
331 | { |
|
|
332 | struct ev_signal *head; |
|
|
333 | sig_atomic_t volatile gotsig; |
|
|
334 | } ANSIG; |
|
|
335 | |
1353 | |
336 | static ANSIG *signals; |
1354 | #ifndef _WIN32 |
337 | static int signalmax; |
|
|
338 | |
1355 | |
339 | static int sigpipe [2]; |
|
|
340 | static sig_atomic_t volatile gotsig; |
|
|
341 | static struct ev_io sigev; |
|
|
342 | |
|
|
343 | static void |
|
|
344 | signals_init (ANSIG *base, int count) |
|
|
345 | { |
|
|
346 | while (count--) |
|
|
347 | { |
|
|
348 | base->head = 0; |
|
|
349 | base->gotsig = 0; |
|
|
350 | |
|
|
351 | ++base; |
|
|
352 | } |
|
|
353 | } |
|
|
354 | |
|
|
355 | static void |
|
|
356 | sighandler (int signum) |
|
|
357 | { |
|
|
358 | signals [signum - 1].gotsig = 1; |
|
|
359 | |
|
|
360 | if (!gotsig) |
|
|
361 | { |
|
|
362 | gotsig = 1; |
|
|
363 | write (sigpipe [1], &signum, 1); |
|
|
364 | } |
|
|
365 | } |
|
|
366 | |
|
|
367 | static void |
|
|
368 | sigcb (struct ev_io *iow, int revents) |
|
|
369 | { |
|
|
370 | struct ev_signal *w; |
|
|
371 | int sig; |
|
|
372 | |
|
|
373 | read (sigpipe [0], &revents, 1); |
|
|
374 | gotsig = 0; |
|
|
375 | |
|
|
376 | for (sig = signalmax; sig--; ) |
|
|
377 | if (signals [sig].gotsig) |
|
|
378 | { |
|
|
379 | signals [sig].gotsig = 0; |
|
|
380 | |
|
|
381 | for (w = signals [sig].head; w; w = w->next) |
|
|
382 | event ((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 | } |
|
|
399 | |
|
|
400 | /*****************************************************************************/ |
|
|
401 | |
|
|
402 | static struct ev_idle **idles; |
|
|
403 | static int idlemax, idlecnt; |
|
|
404 | |
|
|
405 | static struct ev_prepare **prepares; |
|
|
406 | static int preparemax, preparecnt; |
|
|
407 | |
|
|
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; |
1356 | static ev_signal childev; |
|
|
1357 | |
|
|
1358 | #ifndef WIFCONTINUED |
|
|
1359 | # define WIFCONTINUED(status) 0 |
|
|
1360 | #endif |
|
|
1361 | |
|
|
1362 | /* handle a single child status event */ |
|
|
1363 | inline_speed void |
|
|
1364 | child_reap (EV_P_ int chain, int pid, int status) |
|
|
1365 | { |
|
|
1366 | ev_child *w; |
|
|
1367 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
|
|
1368 | |
|
|
1369 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1370 | { |
|
|
1371 | if ((w->pid == pid || !w->pid) |
|
|
1372 | && (!traced || (w->flags & 1))) |
|
|
1373 | { |
|
|
1374 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
|
|
1375 | w->rpid = pid; |
|
|
1376 | w->rstatus = status; |
|
|
1377 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
1378 | } |
|
|
1379 | } |
|
|
1380 | } |
415 | |
1381 | |
416 | #ifndef WCONTINUED |
1382 | #ifndef WCONTINUED |
417 | # define WCONTINUED 0 |
1383 | # define WCONTINUED 0 |
418 | #endif |
1384 | #endif |
419 | |
1385 | |
|
|
1386 | /* called on sigchld etc., calls waitpid */ |
420 | static void |
1387 | static void |
421 | childcb (struct ev_signal *sw, int revents) |
1388 | childcb (EV_P_ ev_signal *sw, int revents) |
422 | { |
1389 | { |
423 | struct ev_child *w; |
|
|
424 | int pid, status; |
1390 | int pid, status; |
425 | |
1391 | |
|
|
1392 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
426 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
1393 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
427 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
1394 | if (!WCONTINUED |
428 | if (w->pid == pid || w->pid == -1) |
1395 | || errno != EINVAL |
429 | { |
1396 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
430 | w->status = status; |
1397 | return; |
431 | event ((W)w, EV_CHILD); |
1398 | |
432 | } |
1399 | /* make sure we are called again until all children have been reaped */ |
|
|
1400 | /* we need to do it this way so that the callback gets called before we continue */ |
|
|
1401 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
1402 | |
|
|
1403 | child_reap (EV_A_ pid, pid, status); |
|
|
1404 | if (EV_PID_HASHSIZE > 1) |
|
|
1405 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
433 | } |
1406 | } |
|
|
1407 | |
|
|
1408 | #endif |
434 | |
1409 | |
435 | /*****************************************************************************/ |
1410 | /*****************************************************************************/ |
436 | |
1411 | |
|
|
1412 | #if EV_USE_PORT |
|
|
1413 | # include "ev_port.c" |
|
|
1414 | #endif |
|
|
1415 | #if EV_USE_KQUEUE |
|
|
1416 | # include "ev_kqueue.c" |
|
|
1417 | #endif |
437 | #if EV_USE_EPOLL |
1418 | #if EV_USE_EPOLL |
438 | # include "ev_epoll.c" |
1419 | # include "ev_epoll.c" |
439 | #endif |
1420 | #endif |
|
|
1421 | #if EV_USE_POLL |
|
|
1422 | # include "ev_poll.c" |
|
|
1423 | #endif |
440 | #if EV_USE_SELECT |
1424 | #if EV_USE_SELECT |
441 | # include "ev_select.c" |
1425 | # include "ev_select.c" |
442 | #endif |
1426 | #endif |
443 | |
1427 | |
444 | int |
1428 | int |
… | |
… | |
451 | ev_version_minor (void) |
1435 | ev_version_minor (void) |
452 | { |
1436 | { |
453 | return EV_VERSION_MINOR; |
1437 | return EV_VERSION_MINOR; |
454 | } |
1438 | } |
455 | |
1439 | |
456 | int ev_init (int flags) |
1440 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
1441 | int inline_size |
|
|
1442 | enable_secure (void) |
457 | { |
1443 | { |
458 | if (!ev_method) |
1444 | #ifdef _WIN32 |
|
|
1445 | return 0; |
|
|
1446 | #else |
|
|
1447 | return getuid () != geteuid () |
|
|
1448 | || getgid () != getegid (); |
|
|
1449 | #endif |
|
|
1450 | } |
|
|
1451 | |
|
|
1452 | unsigned int |
|
|
1453 | ev_supported_backends (void) |
|
|
1454 | { |
|
|
1455 | unsigned int flags = 0; |
|
|
1456 | |
|
|
1457 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
1458 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
1459 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
1460 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
1461 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
1462 | |
|
|
1463 | return flags; |
|
|
1464 | } |
|
|
1465 | |
|
|
1466 | unsigned int |
|
|
1467 | ev_recommended_backends (void) |
|
|
1468 | { |
|
|
1469 | unsigned int flags = ev_supported_backends (); |
|
|
1470 | |
|
|
1471 | #ifndef __NetBSD__ |
|
|
1472 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
1473 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
1474 | flags &= ~EVBACKEND_KQUEUE; |
|
|
1475 | #endif |
|
|
1476 | #ifdef __APPLE__ |
|
|
1477 | /* only select works correctly on that "unix-certified" platform */ |
|
|
1478 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
|
|
1479 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
|
|
1480 | #endif |
|
|
1481 | |
|
|
1482 | return flags; |
|
|
1483 | } |
|
|
1484 | |
|
|
1485 | unsigned int |
|
|
1486 | ev_embeddable_backends (void) |
|
|
1487 | { |
|
|
1488 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
|
|
1489 | |
|
|
1490 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
1491 | /* please fix it and tell me how to detect the fix */ |
|
|
1492 | flags &= ~EVBACKEND_EPOLL; |
|
|
1493 | |
|
|
1494 | return flags; |
|
|
1495 | } |
|
|
1496 | |
|
|
1497 | unsigned int |
|
|
1498 | ev_backend (EV_P) |
|
|
1499 | { |
|
|
1500 | return backend; |
|
|
1501 | } |
|
|
1502 | |
|
|
1503 | #if EV_MINIMAL < 2 |
|
|
1504 | unsigned int |
|
|
1505 | ev_loop_count (EV_P) |
|
|
1506 | { |
|
|
1507 | return loop_count; |
|
|
1508 | } |
|
|
1509 | |
|
|
1510 | unsigned int |
|
|
1511 | ev_loop_depth (EV_P) |
|
|
1512 | { |
|
|
1513 | return loop_depth; |
|
|
1514 | } |
|
|
1515 | |
|
|
1516 | void |
|
|
1517 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1518 | { |
|
|
1519 | io_blocktime = interval; |
|
|
1520 | } |
|
|
1521 | |
|
|
1522 | void |
|
|
1523 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1524 | { |
|
|
1525 | timeout_blocktime = interval; |
|
|
1526 | } |
|
|
1527 | |
|
|
1528 | void |
|
|
1529 | ev_set_userdata (EV_P_ void *data) |
|
|
1530 | { |
|
|
1531 | userdata = data; |
|
|
1532 | } |
|
|
1533 | |
|
|
1534 | void * |
|
|
1535 | ev_userdata (EV_P) |
|
|
1536 | { |
|
|
1537 | return userdata; |
|
|
1538 | } |
|
|
1539 | |
|
|
1540 | void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
|
|
1541 | { |
|
|
1542 | invoke_cb = invoke_pending_cb; |
|
|
1543 | } |
|
|
1544 | |
|
|
1545 | void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
|
|
1546 | { |
|
|
1547 | release_cb = release; |
|
|
1548 | acquire_cb = acquire; |
|
|
1549 | } |
|
|
1550 | #endif |
|
|
1551 | |
|
|
1552 | /* initialise a loop structure, must be zero-initialised */ |
|
|
1553 | static void noinline |
|
|
1554 | loop_init (EV_P_ unsigned int flags) |
|
|
1555 | { |
|
|
1556 | if (!backend) |
459 | { |
1557 | { |
|
|
1558 | #if EV_USE_REALTIME |
|
|
1559 | if (!have_realtime) |
|
|
1560 | { |
|
|
1561 | struct timespec ts; |
|
|
1562 | |
|
|
1563 | if (!clock_gettime (CLOCK_REALTIME, &ts)) |
|
|
1564 | have_realtime = 1; |
|
|
1565 | } |
|
|
1566 | #endif |
|
|
1567 | |
460 | #if EV_USE_MONOTONIC |
1568 | #if EV_USE_MONOTONIC |
|
|
1569 | if (!have_monotonic) |
|
|
1570 | { |
|
|
1571 | struct timespec ts; |
|
|
1572 | |
|
|
1573 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
1574 | have_monotonic = 1; |
|
|
1575 | } |
|
|
1576 | #endif |
|
|
1577 | |
|
|
1578 | /* pid check not overridable via env */ |
|
|
1579 | #ifndef _WIN32 |
|
|
1580 | if (flags & EVFLAG_FORKCHECK) |
|
|
1581 | curpid = getpid (); |
|
|
1582 | #endif |
|
|
1583 | |
|
|
1584 | if (!(flags & EVFLAG_NOENV) |
|
|
1585 | && !enable_secure () |
|
|
1586 | && getenv ("LIBEV_FLAGS")) |
|
|
1587 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
1588 | |
|
|
1589 | ev_rt_now = ev_time (); |
|
|
1590 | mn_now = get_clock (); |
|
|
1591 | now_floor = mn_now; |
|
|
1592 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1593 | #if EV_MINIMAL < 2 |
|
|
1594 | invoke_cb = ev_invoke_pending; |
|
|
1595 | #endif |
|
|
1596 | |
|
|
1597 | io_blocktime = 0.; |
|
|
1598 | timeout_blocktime = 0.; |
|
|
1599 | backend = 0; |
|
|
1600 | backend_fd = -1; |
|
|
1601 | sig_pending = 0; |
|
|
1602 | #if EV_ASYNC_ENABLE |
|
|
1603 | async_pending = 0; |
|
|
1604 | #endif |
|
|
1605 | #if EV_USE_INOTIFY |
|
|
1606 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
|
|
1607 | #endif |
|
|
1608 | #if EV_USE_SIGNALFD |
|
|
1609 | sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2; |
|
|
1610 | #endif |
|
|
1611 | |
|
|
1612 | if (!(flags & 0x0000ffffU)) |
|
|
1613 | flags |= ev_recommended_backends (); |
|
|
1614 | |
|
|
1615 | #if EV_USE_PORT |
|
|
1616 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
1617 | #endif |
|
|
1618 | #if EV_USE_KQUEUE |
|
|
1619 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
1620 | #endif |
|
|
1621 | #if EV_USE_EPOLL |
|
|
1622 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
|
|
1623 | #endif |
|
|
1624 | #if EV_USE_POLL |
|
|
1625 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
|
|
1626 | #endif |
|
|
1627 | #if EV_USE_SELECT |
|
|
1628 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
|
|
1629 | #endif |
|
|
1630 | |
|
|
1631 | ev_prepare_init (&pending_w, pendingcb); |
|
|
1632 | |
|
|
1633 | ev_init (&pipe_w, pipecb); |
|
|
1634 | ev_set_priority (&pipe_w, EV_MAXPRI); |
|
|
1635 | } |
|
|
1636 | } |
|
|
1637 | |
|
|
1638 | /* free up a loop structure */ |
|
|
1639 | static void noinline |
|
|
1640 | loop_destroy (EV_P) |
|
|
1641 | { |
|
|
1642 | int i; |
|
|
1643 | |
|
|
1644 | if (ev_is_active (&pipe_w)) |
|
|
1645 | { |
|
|
1646 | /*ev_ref (EV_A);*/ |
|
|
1647 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
|
|
1648 | |
|
|
1649 | #if EV_USE_EVENTFD |
|
|
1650 | if (evfd >= 0) |
|
|
1651 | close (evfd); |
|
|
1652 | #endif |
|
|
1653 | |
|
|
1654 | if (evpipe [0] >= 0) |
|
|
1655 | { |
|
|
1656 | EV_WIN32_CLOSE_FD (evpipe [0]); |
|
|
1657 | EV_WIN32_CLOSE_FD (evpipe [1]); |
|
|
1658 | } |
|
|
1659 | } |
|
|
1660 | |
|
|
1661 | #if EV_USE_SIGNALFD |
|
|
1662 | if (ev_is_active (&sigfd_w)) |
|
|
1663 | close (sigfd); |
|
|
1664 | #endif |
|
|
1665 | |
|
|
1666 | #if EV_USE_INOTIFY |
|
|
1667 | if (fs_fd >= 0) |
|
|
1668 | close (fs_fd); |
|
|
1669 | #endif |
|
|
1670 | |
|
|
1671 | if (backend_fd >= 0) |
|
|
1672 | close (backend_fd); |
|
|
1673 | |
|
|
1674 | #if EV_USE_PORT |
|
|
1675 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
1676 | #endif |
|
|
1677 | #if EV_USE_KQUEUE |
|
|
1678 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
1679 | #endif |
|
|
1680 | #if EV_USE_EPOLL |
|
|
1681 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
1682 | #endif |
|
|
1683 | #if EV_USE_POLL |
|
|
1684 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
1685 | #endif |
|
|
1686 | #if EV_USE_SELECT |
|
|
1687 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
1688 | #endif |
|
|
1689 | |
|
|
1690 | for (i = NUMPRI; i--; ) |
|
|
1691 | { |
|
|
1692 | array_free (pending, [i]); |
|
|
1693 | #if EV_IDLE_ENABLE |
|
|
1694 | array_free (idle, [i]); |
|
|
1695 | #endif |
|
|
1696 | } |
|
|
1697 | |
|
|
1698 | ev_free (anfds); anfds = 0; anfdmax = 0; |
|
|
1699 | |
|
|
1700 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
1701 | array_free (rfeed, EMPTY); |
|
|
1702 | array_free (fdchange, EMPTY); |
|
|
1703 | array_free (timer, EMPTY); |
|
|
1704 | #if EV_PERIODIC_ENABLE |
|
|
1705 | array_free (periodic, EMPTY); |
|
|
1706 | #endif |
|
|
1707 | #if EV_FORK_ENABLE |
|
|
1708 | array_free (fork, EMPTY); |
|
|
1709 | #endif |
|
|
1710 | array_free (prepare, EMPTY); |
|
|
1711 | array_free (check, EMPTY); |
|
|
1712 | #if EV_ASYNC_ENABLE |
|
|
1713 | array_free (async, EMPTY); |
|
|
1714 | #endif |
|
|
1715 | |
|
|
1716 | backend = 0; |
|
|
1717 | } |
|
|
1718 | |
|
|
1719 | #if EV_USE_INOTIFY |
|
|
1720 | inline_size void infy_fork (EV_P); |
|
|
1721 | #endif |
|
|
1722 | |
|
|
1723 | inline_size void |
|
|
1724 | loop_fork (EV_P) |
|
|
1725 | { |
|
|
1726 | #if EV_USE_PORT |
|
|
1727 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
1728 | #endif |
|
|
1729 | #if EV_USE_KQUEUE |
|
|
1730 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
1731 | #endif |
|
|
1732 | #if EV_USE_EPOLL |
|
|
1733 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
1734 | #endif |
|
|
1735 | #if EV_USE_INOTIFY |
|
|
1736 | infy_fork (EV_A); |
|
|
1737 | #endif |
|
|
1738 | |
|
|
1739 | if (ev_is_active (&pipe_w)) |
|
|
1740 | { |
|
|
1741 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1742 | /* while we modify the fd vars */ |
|
|
1743 | sig_pending = 1; |
|
|
1744 | #if EV_ASYNC_ENABLE |
|
|
1745 | async_pending = 1; |
|
|
1746 | #endif |
|
|
1747 | |
|
|
1748 | ev_ref (EV_A); |
|
|
1749 | ev_io_stop (EV_A_ &pipe_w); |
|
|
1750 | |
|
|
1751 | #if EV_USE_EVENTFD |
|
|
1752 | if (evfd >= 0) |
|
|
1753 | close (evfd); |
|
|
1754 | #endif |
|
|
1755 | |
|
|
1756 | if (evpipe [0] >= 0) |
|
|
1757 | { |
|
|
1758 | EV_WIN32_CLOSE_FD (evpipe [0]); |
|
|
1759 | EV_WIN32_CLOSE_FD (evpipe [1]); |
|
|
1760 | } |
|
|
1761 | |
|
|
1762 | evpipe_init (EV_A); |
|
|
1763 | /* now iterate over everything, in case we missed something */ |
|
|
1764 | pipecb (EV_A_ &pipe_w, EV_READ); |
|
|
1765 | } |
|
|
1766 | |
|
|
1767 | postfork = 0; |
|
|
1768 | } |
|
|
1769 | |
|
|
1770 | #if EV_MULTIPLICITY |
|
|
1771 | |
|
|
1772 | struct ev_loop * |
|
|
1773 | ev_loop_new (unsigned int flags) |
|
|
1774 | { |
|
|
1775 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
1776 | |
|
|
1777 | memset (EV_A, 0, sizeof (struct ev_loop)); |
|
|
1778 | loop_init (EV_A_ flags); |
|
|
1779 | |
|
|
1780 | if (ev_backend (EV_A)) |
|
|
1781 | return EV_A; |
|
|
1782 | |
|
|
1783 | return 0; |
|
|
1784 | } |
|
|
1785 | |
|
|
1786 | void |
|
|
1787 | ev_loop_destroy (EV_P) |
|
|
1788 | { |
|
|
1789 | loop_destroy (EV_A); |
|
|
1790 | ev_free (loop); |
|
|
1791 | } |
|
|
1792 | |
|
|
1793 | void |
|
|
1794 | ev_loop_fork (EV_P) |
|
|
1795 | { |
|
|
1796 | postfork = 1; /* must be in line with ev_default_fork */ |
|
|
1797 | } |
|
|
1798 | #endif /* multiplicity */ |
|
|
1799 | |
|
|
1800 | #if EV_VERIFY |
|
|
1801 | static void noinline |
|
|
1802 | verify_watcher (EV_P_ W w) |
|
|
1803 | { |
|
|
1804 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
|
|
1805 | |
|
|
1806 | if (w->pending) |
|
|
1807 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
|
|
1808 | } |
|
|
1809 | |
|
|
1810 | static void noinline |
|
|
1811 | verify_heap (EV_P_ ANHE *heap, int N) |
|
|
1812 | { |
|
|
1813 | int i; |
|
|
1814 | |
|
|
1815 | for (i = HEAP0; i < N + HEAP0; ++i) |
|
|
1816 | { |
|
|
1817 | assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); |
|
|
1818 | assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); |
|
|
1819 | assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); |
|
|
1820 | |
|
|
1821 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
|
|
1822 | } |
|
|
1823 | } |
|
|
1824 | |
|
|
1825 | static void noinline |
|
|
1826 | array_verify (EV_P_ W *ws, int cnt) |
|
|
1827 | { |
|
|
1828 | while (cnt--) |
|
|
1829 | { |
|
|
1830 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
|
|
1831 | verify_watcher (EV_A_ ws [cnt]); |
|
|
1832 | } |
|
|
1833 | } |
|
|
1834 | #endif |
|
|
1835 | |
|
|
1836 | #if EV_MINIMAL < 2 |
|
|
1837 | void |
|
|
1838 | ev_loop_verify (EV_P) |
|
|
1839 | { |
|
|
1840 | #if EV_VERIFY |
|
|
1841 | int i; |
|
|
1842 | WL w; |
|
|
1843 | |
|
|
1844 | assert (activecnt >= -1); |
|
|
1845 | |
|
|
1846 | assert (fdchangemax >= fdchangecnt); |
|
|
1847 | for (i = 0; i < fdchangecnt; ++i) |
|
|
1848 | assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); |
|
|
1849 | |
|
|
1850 | assert (anfdmax >= 0); |
|
|
1851 | for (i = 0; i < anfdmax; ++i) |
|
|
1852 | for (w = anfds [i].head; w; w = w->next) |
461 | { |
1853 | { |
462 | struct timespec ts; |
1854 | verify_watcher (EV_A_ (W)w); |
463 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1855 | assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); |
464 | have_monotonic = 1; |
1856 | assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
465 | } |
1857 | } |
|
|
1858 | |
|
|
1859 | assert (timermax >= timercnt); |
|
|
1860 | verify_heap (EV_A_ timers, timercnt); |
|
|
1861 | |
|
|
1862 | #if EV_PERIODIC_ENABLE |
|
|
1863 | assert (periodicmax >= periodiccnt); |
|
|
1864 | verify_heap (EV_A_ periodics, periodiccnt); |
|
|
1865 | #endif |
|
|
1866 | |
|
|
1867 | for (i = NUMPRI; i--; ) |
|
|
1868 | { |
|
|
1869 | assert (pendingmax [i] >= pendingcnt [i]); |
|
|
1870 | #if EV_IDLE_ENABLE |
|
|
1871 | assert (idleall >= 0); |
|
|
1872 | assert (idlemax [i] >= idlecnt [i]); |
|
|
1873 | array_verify (EV_A_ (W *)idles [i], idlecnt [i]); |
|
|
1874 | #endif |
|
|
1875 | } |
|
|
1876 | |
|
|
1877 | #if EV_FORK_ENABLE |
|
|
1878 | assert (forkmax >= forkcnt); |
|
|
1879 | array_verify (EV_A_ (W *)forks, forkcnt); |
|
|
1880 | #endif |
|
|
1881 | |
|
|
1882 | #if EV_ASYNC_ENABLE |
|
|
1883 | assert (asyncmax >= asynccnt); |
|
|
1884 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
|
|
1885 | #endif |
|
|
1886 | |
|
|
1887 | assert (preparemax >= preparecnt); |
|
|
1888 | array_verify (EV_A_ (W *)prepares, preparecnt); |
|
|
1889 | |
|
|
1890 | assert (checkmax >= checkcnt); |
|
|
1891 | array_verify (EV_A_ (W *)checks, checkcnt); |
|
|
1892 | |
|
|
1893 | # if 0 |
|
|
1894 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1895 | for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) |
466 | #endif |
1896 | # endif |
467 | |
|
|
468 | ev_now = ev_time (); |
|
|
469 | now = get_clock (); |
|
|
470 | diff = ev_now - now; |
|
|
471 | |
|
|
472 | if (pipe (sigpipe)) |
|
|
473 | return 0; |
|
|
474 | |
|
|
475 | ev_method = EVMETHOD_NONE; |
|
|
476 | #if EV_USE_EPOLL |
|
|
477 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
|
|
478 | #endif |
1897 | #endif |
479 | #if EV_USE_SELECT |
1898 | } |
480 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
481 | #endif |
1899 | #endif |
482 | |
1900 | |
483 | if (ev_method) |
1901 | #if EV_MULTIPLICITY |
|
|
1902 | struct ev_loop * |
|
|
1903 | ev_default_loop_init (unsigned int flags) |
|
|
1904 | #else |
|
|
1905 | int |
|
|
1906 | ev_default_loop (unsigned int flags) |
|
|
1907 | #endif |
|
|
1908 | { |
|
|
1909 | if (!ev_default_loop_ptr) |
|
|
1910 | { |
|
|
1911 | #if EV_MULTIPLICITY |
|
|
1912 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
|
|
1913 | #else |
|
|
1914 | ev_default_loop_ptr = 1; |
|
|
1915 | #endif |
|
|
1916 | |
|
|
1917 | loop_init (EV_A_ flags); |
|
|
1918 | |
|
|
1919 | if (ev_backend (EV_A)) |
484 | { |
1920 | { |
485 | ev_watcher_init (&sigev, sigcb); |
1921 | #ifndef _WIN32 |
486 | siginit (); |
|
|
487 | |
|
|
488 | ev_signal_init (&childev, childcb, SIGCHLD); |
1922 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
1923 | ev_set_priority (&childev, EV_MAXPRI); |
489 | ev_signal_start (&childev); |
1924 | ev_signal_start (EV_A_ &childev); |
|
|
1925 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
1926 | #endif |
490 | } |
1927 | } |
|
|
1928 | else |
|
|
1929 | ev_default_loop_ptr = 0; |
491 | } |
1930 | } |
492 | |
1931 | |
493 | return ev_method; |
1932 | return ev_default_loop_ptr; |
|
|
1933 | } |
|
|
1934 | |
|
|
1935 | void |
|
|
1936 | ev_default_destroy (void) |
|
|
1937 | { |
|
|
1938 | #if EV_MULTIPLICITY |
|
|
1939 | EV_P = ev_default_loop_ptr; |
|
|
1940 | #endif |
|
|
1941 | |
|
|
1942 | ev_default_loop_ptr = 0; |
|
|
1943 | |
|
|
1944 | #ifndef _WIN32 |
|
|
1945 | ev_ref (EV_A); /* child watcher */ |
|
|
1946 | ev_signal_stop (EV_A_ &childev); |
|
|
1947 | #endif |
|
|
1948 | |
|
|
1949 | loop_destroy (EV_A); |
|
|
1950 | } |
|
|
1951 | |
|
|
1952 | void |
|
|
1953 | ev_default_fork (void) |
|
|
1954 | { |
|
|
1955 | #if EV_MULTIPLICITY |
|
|
1956 | EV_P = ev_default_loop_ptr; |
|
|
1957 | #endif |
|
|
1958 | |
|
|
1959 | postfork = 1; /* must be in line with ev_loop_fork */ |
494 | } |
1960 | } |
495 | |
1961 | |
496 | /*****************************************************************************/ |
1962 | /*****************************************************************************/ |
497 | |
1963 | |
498 | void |
1964 | void |
499 | ev_fork_prepare (void) |
1965 | ev_invoke (EV_P_ void *w, int revents) |
500 | { |
1966 | { |
501 | /* nop */ |
1967 | EV_CB_INVOKE ((W)w, revents); |
502 | } |
1968 | } |
503 | |
1969 | |
504 | void |
1970 | unsigned int |
505 | ev_fork_parent (void) |
1971 | ev_pending_count (EV_P) |
506 | { |
1972 | { |
507 | /* nop */ |
1973 | int pri; |
508 | } |
1974 | unsigned int count = 0; |
509 | |
1975 | |
510 | void |
1976 | for (pri = NUMPRI; pri--; ) |
511 | ev_fork_child (void) |
1977 | count += pendingcnt [pri]; |
|
|
1978 | |
|
|
1979 | return count; |
|
|
1980 | } |
|
|
1981 | |
|
|
1982 | void noinline |
|
|
1983 | ev_invoke_pending (EV_P) |
512 | { |
1984 | { |
513 | #if EV_USE_EPOLL |
1985 | int pri; |
514 | if (ev_method == EVMETHOD_EPOLL) |
1986 | |
515 | epoll_postfork_child (); |
1987 | for (pri = NUMPRI; pri--; ) |
|
|
1988 | while (pendingcnt [pri]) |
|
|
1989 | { |
|
|
1990 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
|
|
1991 | |
|
|
1992 | /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/ |
|
|
1993 | /* ^ this is no longer true, as pending_w could be here */ |
|
|
1994 | |
|
|
1995 | p->w->pending = 0; |
|
|
1996 | EV_CB_INVOKE (p->w, p->events); |
|
|
1997 | EV_FREQUENT_CHECK; |
|
|
1998 | } |
|
|
1999 | } |
|
|
2000 | |
|
|
2001 | #if EV_IDLE_ENABLE |
|
|
2002 | /* make idle watchers pending. this handles the "call-idle */ |
|
|
2003 | /* only when higher priorities are idle" logic */ |
|
|
2004 | inline_size void |
|
|
2005 | idle_reify (EV_P) |
|
|
2006 | { |
|
|
2007 | if (expect_false (idleall)) |
|
|
2008 | { |
|
|
2009 | int pri; |
|
|
2010 | |
|
|
2011 | for (pri = NUMPRI; pri--; ) |
|
|
2012 | { |
|
|
2013 | if (pendingcnt [pri]) |
|
|
2014 | break; |
|
|
2015 | |
|
|
2016 | if (idlecnt [pri]) |
|
|
2017 | { |
|
|
2018 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
|
|
2019 | break; |
|
|
2020 | } |
|
|
2021 | } |
|
|
2022 | } |
|
|
2023 | } |
|
|
2024 | #endif |
|
|
2025 | |
|
|
2026 | /* make timers pending */ |
|
|
2027 | inline_size void |
|
|
2028 | timers_reify (EV_P) |
|
|
2029 | { |
|
|
2030 | EV_FREQUENT_CHECK; |
|
|
2031 | |
|
|
2032 | if (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
|
|
2033 | { |
|
|
2034 | do |
|
|
2035 | { |
|
|
2036 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
|
|
2037 | |
|
|
2038 | /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/ |
|
|
2039 | |
|
|
2040 | /* first reschedule or stop timer */ |
|
|
2041 | if (w->repeat) |
|
|
2042 | { |
|
|
2043 | ev_at (w) += w->repeat; |
|
|
2044 | if (ev_at (w) < mn_now) |
|
|
2045 | ev_at (w) = mn_now; |
|
|
2046 | |
|
|
2047 | assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
2048 | |
|
|
2049 | ANHE_at_cache (timers [HEAP0]); |
|
|
2050 | downheap (timers, timercnt, HEAP0); |
|
|
2051 | } |
|
|
2052 | else |
|
|
2053 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
2054 | |
|
|
2055 | EV_FREQUENT_CHECK; |
|
|
2056 | feed_reverse (EV_A_ (W)w); |
|
|
2057 | } |
|
|
2058 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); |
|
|
2059 | |
|
|
2060 | feed_reverse_done (EV_A_ EV_TIMEOUT); |
|
|
2061 | } |
|
|
2062 | } |
|
|
2063 | |
|
|
2064 | #if EV_PERIODIC_ENABLE |
|
|
2065 | /* make periodics pending */ |
|
|
2066 | inline_size void |
|
|
2067 | periodics_reify (EV_P) |
|
|
2068 | { |
|
|
2069 | EV_FREQUENT_CHECK; |
|
|
2070 | |
|
|
2071 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
|
|
2072 | { |
|
|
2073 | int feed_count = 0; |
|
|
2074 | |
|
|
2075 | do |
|
|
2076 | { |
|
|
2077 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
|
|
2078 | |
|
|
2079 | /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ |
|
|
2080 | |
|
|
2081 | /* first reschedule or stop timer */ |
|
|
2082 | if (w->reschedule_cb) |
|
|
2083 | { |
|
|
2084 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
2085 | |
|
|
2086 | assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
|
|
2087 | |
|
|
2088 | ANHE_at_cache (periodics [HEAP0]); |
|
|
2089 | downheap (periodics, periodiccnt, HEAP0); |
|
|
2090 | } |
|
|
2091 | else if (w->interval) |
|
|
2092 | { |
|
|
2093 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2094 | /* if next trigger time is not sufficiently in the future, put it there */ |
|
|
2095 | /* this might happen because of floating point inexactness */ |
|
|
2096 | if (ev_at (w) - ev_rt_now < TIME_EPSILON) |
|
|
2097 | { |
|
|
2098 | ev_at (w) += w->interval; |
|
|
2099 | |
|
|
2100 | /* if interval is unreasonably low we might still have a time in the past */ |
|
|
2101 | /* so correct this. this will make the periodic very inexact, but the user */ |
|
|
2102 | /* has effectively asked to get triggered more often than possible */ |
|
|
2103 | if (ev_at (w) < ev_rt_now) |
|
|
2104 | ev_at (w) = ev_rt_now; |
|
|
2105 | } |
|
|
2106 | |
|
|
2107 | ANHE_at_cache (periodics [HEAP0]); |
|
|
2108 | downheap (periodics, periodiccnt, HEAP0); |
|
|
2109 | } |
|
|
2110 | else |
|
|
2111 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
2112 | |
|
|
2113 | EV_FREQUENT_CHECK; |
|
|
2114 | feed_reverse (EV_A_ (W)w); |
|
|
2115 | } |
|
|
2116 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now); |
|
|
2117 | |
|
|
2118 | feed_reverse_done (EV_A_ EV_PERIODIC); |
|
|
2119 | } |
|
|
2120 | } |
|
|
2121 | |
|
|
2122 | /* simply recalculate all periodics */ |
|
|
2123 | /* TODO: maybe ensure that at leats one event happens when jumping forward? */ |
|
|
2124 | static void noinline |
|
|
2125 | periodics_reschedule (EV_P) |
|
|
2126 | { |
|
|
2127 | int i; |
|
|
2128 | |
|
|
2129 | /* adjust periodics after time jump */ |
|
|
2130 | for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
|
|
2131 | { |
|
|
2132 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
|
|
2133 | |
|
|
2134 | if (w->reschedule_cb) |
|
|
2135 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
2136 | else if (w->interval) |
|
|
2137 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2138 | |
|
|
2139 | ANHE_at_cache (periodics [i]); |
|
|
2140 | } |
|
|
2141 | |
|
|
2142 | reheap (periodics, periodiccnt); |
|
|
2143 | } |
|
|
2144 | #endif |
|
|
2145 | |
|
|
2146 | /* adjust all timers by a given offset */ |
|
|
2147 | static void noinline |
|
|
2148 | timers_reschedule (EV_P_ ev_tstamp adjust) |
|
|
2149 | { |
|
|
2150 | int i; |
|
|
2151 | |
|
|
2152 | for (i = 0; i < timercnt; ++i) |
|
|
2153 | { |
|
|
2154 | ANHE *he = timers + i + HEAP0; |
|
|
2155 | ANHE_w (*he)->at += adjust; |
|
|
2156 | ANHE_at_cache (*he); |
|
|
2157 | } |
|
|
2158 | } |
|
|
2159 | |
|
|
2160 | /* fetch new monotonic and realtime times from the kernel */ |
|
|
2161 | /* also detetc if there was a timejump, and act accordingly */ |
|
|
2162 | inline_speed void |
|
|
2163 | time_update (EV_P_ ev_tstamp max_block) |
|
|
2164 | { |
|
|
2165 | #if EV_USE_MONOTONIC |
|
|
2166 | if (expect_true (have_monotonic)) |
|
|
2167 | { |
|
|
2168 | int i; |
|
|
2169 | ev_tstamp odiff = rtmn_diff; |
|
|
2170 | |
|
|
2171 | mn_now = get_clock (); |
|
|
2172 | |
|
|
2173 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
2174 | /* interpolate in the meantime */ |
|
|
2175 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
2176 | { |
|
|
2177 | ev_rt_now = rtmn_diff + mn_now; |
|
|
2178 | return; |
|
|
2179 | } |
|
|
2180 | |
|
|
2181 | now_floor = mn_now; |
|
|
2182 | ev_rt_now = ev_time (); |
|
|
2183 | |
|
|
2184 | /* loop a few times, before making important decisions. |
|
|
2185 | * on the choice of "4": one iteration isn't enough, |
|
|
2186 | * in case we get preempted during the calls to |
|
|
2187 | * ev_time and get_clock. a second call is almost guaranteed |
|
|
2188 | * to succeed in that case, though. and looping a few more times |
|
|
2189 | * doesn't hurt either as we only do this on time-jumps or |
|
|
2190 | * in the unlikely event of having been preempted here. |
|
|
2191 | */ |
|
|
2192 | for (i = 4; --i; ) |
|
|
2193 | { |
|
|
2194 | rtmn_diff = ev_rt_now - mn_now; |
|
|
2195 | |
|
|
2196 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
|
|
2197 | return; /* all is well */ |
|
|
2198 | |
|
|
2199 | ev_rt_now = ev_time (); |
|
|
2200 | mn_now = get_clock (); |
|
|
2201 | now_floor = mn_now; |
|
|
2202 | } |
|
|
2203 | |
|
|
2204 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
2205 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
2206 | # if EV_PERIODIC_ENABLE |
|
|
2207 | periodics_reschedule (EV_A); |
516 | #endif |
2208 | # endif |
|
|
2209 | } |
|
|
2210 | else |
|
|
2211 | #endif |
|
|
2212 | { |
|
|
2213 | ev_rt_now = ev_time (); |
517 | |
2214 | |
518 | ev_io_stop (&sigev); |
2215 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
519 | close (sigpipe [0]); |
2216 | { |
520 | close (sigpipe [1]); |
2217 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
521 | pipe (sigpipe); |
2218 | timers_reschedule (EV_A_ ev_rt_now - mn_now); |
522 | siginit (); |
2219 | #if EV_PERIODIC_ENABLE |
|
|
2220 | periodics_reschedule (EV_A); |
|
|
2221 | #endif |
|
|
2222 | } |
|
|
2223 | |
|
|
2224 | mn_now = ev_rt_now; |
|
|
2225 | } |
|
|
2226 | } |
|
|
2227 | |
|
|
2228 | void |
|
|
2229 | ev_loop (EV_P_ int flags) |
|
|
2230 | { |
|
|
2231 | #if EV_MINIMAL < 2 |
|
|
2232 | ++loop_depth; |
|
|
2233 | #endif |
|
|
2234 | |
|
|
2235 | assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE)); |
|
|
2236 | |
|
|
2237 | loop_done = EVUNLOOP_CANCEL; |
|
|
2238 | |
|
|
2239 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
|
|
2240 | |
|
|
2241 | do |
|
|
2242 | { |
|
|
2243 | #if EV_VERIFY >= 2 |
|
|
2244 | ev_loop_verify (EV_A); |
|
|
2245 | #endif |
|
|
2246 | |
|
|
2247 | #ifndef _WIN32 |
|
|
2248 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
2249 | if (expect_false (getpid () != curpid)) |
|
|
2250 | { |
|
|
2251 | curpid = getpid (); |
|
|
2252 | postfork = 1; |
|
|
2253 | } |
|
|
2254 | #endif |
|
|
2255 | |
|
|
2256 | #if EV_FORK_ENABLE |
|
|
2257 | /* we might have forked, so queue fork handlers */ |
|
|
2258 | if (expect_false (postfork)) |
|
|
2259 | if (forkcnt) |
|
|
2260 | { |
|
|
2261 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
2262 | EV_INVOKE_PENDING; |
|
|
2263 | } |
|
|
2264 | #endif |
|
|
2265 | |
|
|
2266 | /* queue prepare watchers (and execute them) */ |
|
|
2267 | if (expect_false (preparecnt)) |
|
|
2268 | { |
|
|
2269 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
|
|
2270 | EV_INVOKE_PENDING; |
|
|
2271 | } |
|
|
2272 | |
|
|
2273 | if (expect_false (loop_done)) |
|
|
2274 | break; |
|
|
2275 | |
|
|
2276 | /* we might have forked, so reify kernel state if necessary */ |
|
|
2277 | if (expect_false (postfork)) |
|
|
2278 | loop_fork (EV_A); |
|
|
2279 | |
|
|
2280 | /* update fd-related kernel structures */ |
|
|
2281 | fd_reify (EV_A); |
|
|
2282 | |
|
|
2283 | /* calculate blocking time */ |
|
|
2284 | { |
|
|
2285 | ev_tstamp waittime = 0.; |
|
|
2286 | ev_tstamp sleeptime = 0.; |
|
|
2287 | |
|
|
2288 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
|
|
2289 | { |
|
|
2290 | /* remember old timestamp for io_blocktime calculation */ |
|
|
2291 | ev_tstamp prev_mn_now = mn_now; |
|
|
2292 | |
|
|
2293 | /* update time to cancel out callback processing overhead */ |
|
|
2294 | time_update (EV_A_ 1e100); |
|
|
2295 | |
|
|
2296 | waittime = MAX_BLOCKTIME; |
|
|
2297 | |
|
|
2298 | if (timercnt) |
|
|
2299 | { |
|
|
2300 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
|
|
2301 | if (waittime > to) waittime = to; |
|
|
2302 | } |
|
|
2303 | |
|
|
2304 | #if EV_PERIODIC_ENABLE |
|
|
2305 | if (periodiccnt) |
|
|
2306 | { |
|
|
2307 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
|
|
2308 | if (waittime > to) waittime = to; |
|
|
2309 | } |
|
|
2310 | #endif |
|
|
2311 | |
|
|
2312 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
|
|
2313 | if (expect_false (waittime < timeout_blocktime)) |
|
|
2314 | waittime = timeout_blocktime; |
|
|
2315 | |
|
|
2316 | /* extra check because io_blocktime is commonly 0 */ |
|
|
2317 | if (expect_false (io_blocktime)) |
|
|
2318 | { |
|
|
2319 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
|
|
2320 | |
|
|
2321 | if (sleeptime > waittime - backend_fudge) |
|
|
2322 | sleeptime = waittime - backend_fudge; |
|
|
2323 | |
|
|
2324 | if (expect_true (sleeptime > 0.)) |
|
|
2325 | { |
|
|
2326 | ev_sleep (sleeptime); |
|
|
2327 | waittime -= sleeptime; |
|
|
2328 | } |
|
|
2329 | } |
|
|
2330 | } |
|
|
2331 | |
|
|
2332 | #if EV_MINIMAL < 2 |
|
|
2333 | ++loop_count; |
|
|
2334 | #endif |
|
|
2335 | assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */ |
|
|
2336 | backend_poll (EV_A_ waittime); |
|
|
2337 | assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */ |
|
|
2338 | |
|
|
2339 | /* update ev_rt_now, do magic */ |
|
|
2340 | time_update (EV_A_ waittime + sleeptime); |
|
|
2341 | } |
|
|
2342 | |
|
|
2343 | /* queue pending timers and reschedule them */ |
|
|
2344 | timers_reify (EV_A); /* relative timers called last */ |
|
|
2345 | #if EV_PERIODIC_ENABLE |
|
|
2346 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
2347 | #endif |
|
|
2348 | |
|
|
2349 | #if EV_IDLE_ENABLE |
|
|
2350 | /* queue idle watchers unless other events are pending */ |
|
|
2351 | idle_reify (EV_A); |
|
|
2352 | #endif |
|
|
2353 | |
|
|
2354 | /* queue check watchers, to be executed first */ |
|
|
2355 | if (expect_false (checkcnt)) |
|
|
2356 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
|
|
2357 | |
|
|
2358 | EV_INVOKE_PENDING; |
|
|
2359 | } |
|
|
2360 | while (expect_true ( |
|
|
2361 | activecnt |
|
|
2362 | && !loop_done |
|
|
2363 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
|
|
2364 | )); |
|
|
2365 | |
|
|
2366 | if (loop_done == EVUNLOOP_ONE) |
|
|
2367 | loop_done = EVUNLOOP_CANCEL; |
|
|
2368 | |
|
|
2369 | #if EV_MINIMAL < 2 |
|
|
2370 | --loop_depth; |
|
|
2371 | #endif |
|
|
2372 | } |
|
|
2373 | |
|
|
2374 | void |
|
|
2375 | ev_unloop (EV_P_ int how) |
|
|
2376 | { |
|
|
2377 | loop_done = how; |
|
|
2378 | } |
|
|
2379 | |
|
|
2380 | void |
|
|
2381 | ev_ref (EV_P) |
|
|
2382 | { |
|
|
2383 | ++activecnt; |
|
|
2384 | } |
|
|
2385 | |
|
|
2386 | void |
|
|
2387 | ev_unref (EV_P) |
|
|
2388 | { |
|
|
2389 | --activecnt; |
|
|
2390 | } |
|
|
2391 | |
|
|
2392 | void |
|
|
2393 | ev_now_update (EV_P) |
|
|
2394 | { |
|
|
2395 | time_update (EV_A_ 1e100); |
|
|
2396 | } |
|
|
2397 | |
|
|
2398 | void |
|
|
2399 | ev_suspend (EV_P) |
|
|
2400 | { |
|
|
2401 | ev_now_update (EV_A); |
|
|
2402 | } |
|
|
2403 | |
|
|
2404 | void |
|
|
2405 | ev_resume (EV_P) |
|
|
2406 | { |
|
|
2407 | ev_tstamp mn_prev = mn_now; |
|
|
2408 | |
|
|
2409 | ev_now_update (EV_A); |
|
|
2410 | timers_reschedule (EV_A_ mn_now - mn_prev); |
|
|
2411 | #if EV_PERIODIC_ENABLE |
|
|
2412 | /* TODO: really do this? */ |
|
|
2413 | periodics_reschedule (EV_A); |
|
|
2414 | #endif |
523 | } |
2415 | } |
524 | |
2416 | |
525 | /*****************************************************************************/ |
2417 | /*****************************************************************************/ |
|
|
2418 | /* singly-linked list management, used when the expected list length is short */ |
526 | |
2419 | |
527 | static void |
2420 | inline_size void |
528 | call_pending (void) |
2421 | wlist_add (WL *head, WL elem) |
529 | { |
2422 | { |
530 | while (pendingcnt) |
2423 | elem->next = *head; |
531 | { |
2424 | *head = elem; |
532 | ANPENDING *p = pendings + --pendingcnt; |
2425 | } |
533 | |
2426 | |
534 | if (p->w) |
2427 | inline_size void |
|
|
2428 | wlist_del (WL *head, WL elem) |
|
|
2429 | { |
|
|
2430 | while (*head) |
|
|
2431 | { |
|
|
2432 | if (expect_true (*head == elem)) |
535 | { |
2433 | { |
536 | p->w->pending = 0; |
2434 | *head = elem->next; |
537 | p->w->cb (p->w, p->events); |
2435 | break; |
538 | } |
2436 | } |
|
|
2437 | |
|
|
2438 | head = &(*head)->next; |
|
|
2439 | } |
|
|
2440 | } |
|
|
2441 | |
|
|
2442 | /* internal, faster, version of ev_clear_pending */ |
|
|
2443 | inline_speed void |
|
|
2444 | clear_pending (EV_P_ W w) |
|
|
2445 | { |
|
|
2446 | if (w->pending) |
539 | } |
2447 | { |
|
|
2448 | pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w; |
|
|
2449 | w->pending = 0; |
|
|
2450 | } |
540 | } |
2451 | } |
541 | |
2452 | |
542 | static void |
2453 | int |
543 | timers_reify (void) |
2454 | ev_clear_pending (EV_P_ void *w) |
544 | { |
2455 | { |
545 | while (timercnt && timers [0]->at <= now) |
2456 | W w_ = (W)w; |
|
|
2457 | int pending = w_->pending; |
|
|
2458 | |
|
|
2459 | if (expect_true (pending)) |
|
|
2460 | { |
|
|
2461 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
2462 | p->w = (W)&pending_w; |
|
|
2463 | w_->pending = 0; |
|
|
2464 | return p->events; |
|
|
2465 | } |
|
|
2466 | else |
|
|
2467 | return 0; |
|
|
2468 | } |
|
|
2469 | |
|
|
2470 | inline_size void |
|
|
2471 | pri_adjust (EV_P_ W w) |
|
|
2472 | { |
|
|
2473 | int pri = ev_priority (w); |
|
|
2474 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
2475 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
2476 | ev_set_priority (w, pri); |
|
|
2477 | } |
|
|
2478 | |
|
|
2479 | inline_speed void |
|
|
2480 | ev_start (EV_P_ W w, int active) |
|
|
2481 | { |
|
|
2482 | pri_adjust (EV_A_ w); |
|
|
2483 | w->active = active; |
|
|
2484 | ev_ref (EV_A); |
|
|
2485 | } |
|
|
2486 | |
|
|
2487 | inline_size void |
|
|
2488 | ev_stop (EV_P_ W w) |
|
|
2489 | { |
|
|
2490 | ev_unref (EV_A); |
|
|
2491 | w->active = 0; |
|
|
2492 | } |
|
|
2493 | |
|
|
2494 | /*****************************************************************************/ |
|
|
2495 | |
|
|
2496 | void noinline |
|
|
2497 | ev_io_start (EV_P_ ev_io *w) |
|
|
2498 | { |
|
|
2499 | int fd = w->fd; |
|
|
2500 | |
|
|
2501 | if (expect_false (ev_is_active (w))) |
|
|
2502 | return; |
|
|
2503 | |
|
|
2504 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
|
|
2505 | assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
|
|
2506 | |
|
|
2507 | EV_FREQUENT_CHECK; |
|
|
2508 | |
|
|
2509 | ev_start (EV_A_ (W)w, 1); |
|
|
2510 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
|
|
2511 | wlist_add (&anfds[fd].head, (WL)w); |
|
|
2512 | |
|
|
2513 | fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); |
|
|
2514 | w->events &= ~EV__IOFDSET; |
|
|
2515 | |
|
|
2516 | EV_FREQUENT_CHECK; |
|
|
2517 | } |
|
|
2518 | |
|
|
2519 | void noinline |
|
|
2520 | ev_io_stop (EV_P_ ev_io *w) |
|
|
2521 | { |
|
|
2522 | clear_pending (EV_A_ (W)w); |
|
|
2523 | if (expect_false (!ev_is_active (w))) |
|
|
2524 | return; |
|
|
2525 | |
|
|
2526 | assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
2527 | |
|
|
2528 | EV_FREQUENT_CHECK; |
|
|
2529 | |
|
|
2530 | wlist_del (&anfds[w->fd].head, (WL)w); |
|
|
2531 | ev_stop (EV_A_ (W)w); |
|
|
2532 | |
|
|
2533 | fd_change (EV_A_ w->fd, 1); |
|
|
2534 | |
|
|
2535 | EV_FREQUENT_CHECK; |
|
|
2536 | } |
|
|
2537 | |
|
|
2538 | void noinline |
|
|
2539 | ev_timer_start (EV_P_ ev_timer *w) |
|
|
2540 | { |
|
|
2541 | if (expect_false (ev_is_active (w))) |
|
|
2542 | return; |
|
|
2543 | |
|
|
2544 | ev_at (w) += mn_now; |
|
|
2545 | |
|
|
2546 | assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
|
|
2547 | |
|
|
2548 | EV_FREQUENT_CHECK; |
|
|
2549 | |
|
|
2550 | ++timercnt; |
|
|
2551 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
|
|
2552 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); |
|
|
2553 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
|
|
2554 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
2555 | upheap (timers, ev_active (w)); |
|
|
2556 | |
|
|
2557 | EV_FREQUENT_CHECK; |
|
|
2558 | |
|
|
2559 | /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
|
|
2560 | } |
|
|
2561 | |
|
|
2562 | void noinline |
|
|
2563 | ev_timer_stop (EV_P_ ev_timer *w) |
|
|
2564 | { |
|
|
2565 | clear_pending (EV_A_ (W)w); |
|
|
2566 | if (expect_false (!ev_is_active (w))) |
|
|
2567 | return; |
|
|
2568 | |
|
|
2569 | EV_FREQUENT_CHECK; |
|
|
2570 | |
|
|
2571 | { |
|
|
2572 | int active = ev_active (w); |
|
|
2573 | |
|
|
2574 | assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
|
|
2575 | |
|
|
2576 | --timercnt; |
|
|
2577 | |
|
|
2578 | if (expect_true (active < timercnt + HEAP0)) |
546 | { |
2579 | { |
547 | struct ev_timer *w = timers [0]; |
2580 | timers [active] = timers [timercnt + HEAP0]; |
|
|
2581 | adjustheap (timers, timercnt, active); |
|
|
2582 | } |
|
|
2583 | } |
548 | |
2584 | |
549 | /* first reschedule or stop timer */ |
2585 | EV_FREQUENT_CHECK; |
|
|
2586 | |
|
|
2587 | ev_at (w) -= mn_now; |
|
|
2588 | |
|
|
2589 | ev_stop (EV_A_ (W)w); |
|
|
2590 | } |
|
|
2591 | |
|
|
2592 | void noinline |
|
|
2593 | ev_timer_again (EV_P_ ev_timer *w) |
|
|
2594 | { |
|
|
2595 | EV_FREQUENT_CHECK; |
|
|
2596 | |
|
|
2597 | if (ev_is_active (w)) |
|
|
2598 | { |
550 | if (w->repeat) |
2599 | if (w->repeat) |
551 | { |
2600 | { |
552 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
553 | w->at = now + w->repeat; |
2601 | ev_at (w) = mn_now + w->repeat; |
554 | downheap ((WT *)timers, timercnt, 0); |
2602 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
2603 | adjustheap (timers, timercnt, ev_active (w)); |
555 | } |
2604 | } |
556 | else |
2605 | else |
557 | ev_timer_stop (w); /* nonrepeating: stop timer */ |
2606 | ev_timer_stop (EV_A_ w); |
558 | |
|
|
559 | event ((W)w, EV_TIMEOUT); |
|
|
560 | } |
|
|
561 | } |
|
|
562 | |
|
|
563 | static void |
|
|
564 | periodics_reify (void) |
|
|
565 | { |
|
|
566 | while (periodiccnt && periodics [0]->at <= ev_now) |
|
|
567 | { |
2607 | } |
568 | struct ev_periodic *w = periodics [0]; |
2608 | else if (w->repeat) |
|
|
2609 | { |
|
|
2610 | ev_at (w) = w->repeat; |
|
|
2611 | ev_timer_start (EV_A_ w); |
|
|
2612 | } |
569 | |
2613 | |
570 | /* first reschedule or stop timer */ |
2614 | EV_FREQUENT_CHECK; |
|
|
2615 | } |
|
|
2616 | |
|
|
2617 | ev_tstamp |
|
|
2618 | ev_timer_remaining (EV_P_ ev_timer *w) |
|
|
2619 | { |
|
|
2620 | return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); |
|
|
2621 | } |
|
|
2622 | |
|
|
2623 | #if EV_PERIODIC_ENABLE |
|
|
2624 | void noinline |
|
|
2625 | ev_periodic_start (EV_P_ ev_periodic *w) |
|
|
2626 | { |
|
|
2627 | if (expect_false (ev_is_active (w))) |
|
|
2628 | return; |
|
|
2629 | |
|
|
2630 | if (w->reschedule_cb) |
|
|
2631 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
571 | if (w->interval) |
2632 | else if (w->interval) |
|
|
2633 | { |
|
|
2634 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
|
|
2635 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
|
|
2636 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2637 | } |
|
|
2638 | else |
|
|
2639 | ev_at (w) = w->offset; |
|
|
2640 | |
|
|
2641 | EV_FREQUENT_CHECK; |
|
|
2642 | |
|
|
2643 | ++periodiccnt; |
|
|
2644 | ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); |
|
|
2645 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); |
|
|
2646 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
|
|
2647 | ANHE_at_cache (periodics [ev_active (w)]); |
|
|
2648 | upheap (periodics, ev_active (w)); |
|
|
2649 | |
|
|
2650 | EV_FREQUENT_CHECK; |
|
|
2651 | |
|
|
2652 | /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
|
|
2653 | } |
|
|
2654 | |
|
|
2655 | void noinline |
|
|
2656 | ev_periodic_stop (EV_P_ ev_periodic *w) |
|
|
2657 | { |
|
|
2658 | clear_pending (EV_A_ (W)w); |
|
|
2659 | if (expect_false (!ev_is_active (w))) |
|
|
2660 | return; |
|
|
2661 | |
|
|
2662 | EV_FREQUENT_CHECK; |
|
|
2663 | |
|
|
2664 | { |
|
|
2665 | int active = ev_active (w); |
|
|
2666 | |
|
|
2667 | assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
|
|
2668 | |
|
|
2669 | --periodiccnt; |
|
|
2670 | |
|
|
2671 | if (expect_true (active < periodiccnt + HEAP0)) |
|
|
2672 | { |
|
|
2673 | periodics [active] = periodics [periodiccnt + HEAP0]; |
|
|
2674 | adjustheap (periodics, periodiccnt, active); |
|
|
2675 | } |
|
|
2676 | } |
|
|
2677 | |
|
|
2678 | EV_FREQUENT_CHECK; |
|
|
2679 | |
|
|
2680 | ev_stop (EV_A_ (W)w); |
|
|
2681 | } |
|
|
2682 | |
|
|
2683 | void noinline |
|
|
2684 | ev_periodic_again (EV_P_ ev_periodic *w) |
|
|
2685 | { |
|
|
2686 | /* TODO: use adjustheap and recalculation */ |
|
|
2687 | ev_periodic_stop (EV_A_ w); |
|
|
2688 | ev_periodic_start (EV_A_ w); |
|
|
2689 | } |
|
|
2690 | #endif |
|
|
2691 | |
|
|
2692 | #ifndef SA_RESTART |
|
|
2693 | # define SA_RESTART 0 |
|
|
2694 | #endif |
|
|
2695 | |
|
|
2696 | void noinline |
|
|
2697 | ev_signal_start (EV_P_ ev_signal *w) |
|
|
2698 | { |
|
|
2699 | if (expect_false (ev_is_active (w))) |
|
|
2700 | return; |
|
|
2701 | |
|
|
2702 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); |
|
|
2703 | |
|
|
2704 | #if EV_MULTIPLICITY |
|
|
2705 | assert (("libev: a signal must not be attached to two different loops", |
|
|
2706 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
|
|
2707 | |
|
|
2708 | signals [w->signum - 1].loop = EV_A; |
|
|
2709 | #endif |
|
|
2710 | |
|
|
2711 | EV_FREQUENT_CHECK; |
|
|
2712 | |
|
|
2713 | #if EV_USE_SIGNALFD |
|
|
2714 | if (sigfd == -2) |
|
|
2715 | { |
|
|
2716 | sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC); |
|
|
2717 | if (sigfd < 0 && errno == EINVAL) |
|
|
2718 | sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */ |
|
|
2719 | |
|
|
2720 | if (sigfd >= 0) |
572 | { |
2721 | { |
573 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
2722 | fd_intern (sigfd); /* doing it twice will not hurt */ |
574 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now)); |
2723 | |
575 | downheap ((WT *)periodics, periodiccnt, 0); |
2724 | sigemptyset (&sigfd_set); |
|
|
2725 | |
|
|
2726 | ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ); |
|
|
2727 | ev_set_priority (&sigfd_w, EV_MAXPRI); |
|
|
2728 | ev_io_start (EV_A_ &sigfd_w); |
|
|
2729 | ev_unref (EV_A); /* signalfd watcher should not keep loop alive */ |
|
|
2730 | } |
|
|
2731 | } |
|
|
2732 | |
|
|
2733 | if (sigfd >= 0) |
|
|
2734 | { |
|
|
2735 | /* TODO: check .head */ |
|
|
2736 | sigaddset (&sigfd_set, w->signum); |
|
|
2737 | sigprocmask (SIG_BLOCK, &sigfd_set, 0); |
|
|
2738 | |
|
|
2739 | signalfd (sigfd, &sigfd_set, 0); |
|
|
2740 | } |
|
|
2741 | #endif |
|
|
2742 | |
|
|
2743 | ev_start (EV_A_ (W)w, 1); |
|
|
2744 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
|
|
2745 | |
|
|
2746 | if (!((WL)w)->next) |
|
|
2747 | # if EV_USE_SIGNALFD |
|
|
2748 | if (sigfd < 0) /*TODO*/ |
|
|
2749 | # endif |
|
|
2750 | { |
|
|
2751 | # if _WIN32 |
|
|
2752 | evpipe_init (EV_A); |
|
|
2753 | |
|
|
2754 | signal (w->signum, ev_sighandler); |
|
|
2755 | # else |
|
|
2756 | struct sigaction sa; |
|
|
2757 | |
|
|
2758 | evpipe_init (EV_A); |
|
|
2759 | |
|
|
2760 | sa.sa_handler = ev_sighandler; |
|
|
2761 | sigfillset (&sa.sa_mask); |
|
|
2762 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
2763 | sigaction (w->signum, &sa, 0); |
|
|
2764 | |
|
|
2765 | sigemptyset (&sa.sa_mask); |
|
|
2766 | sigaddset (&sa.sa_mask, w->signum); |
|
|
2767 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
|
|
2768 | #endif |
|
|
2769 | } |
|
|
2770 | |
|
|
2771 | EV_FREQUENT_CHECK; |
|
|
2772 | } |
|
|
2773 | |
|
|
2774 | void noinline |
|
|
2775 | ev_signal_stop (EV_P_ ev_signal *w) |
|
|
2776 | { |
|
|
2777 | clear_pending (EV_A_ (W)w); |
|
|
2778 | if (expect_false (!ev_is_active (w))) |
|
|
2779 | return; |
|
|
2780 | |
|
|
2781 | EV_FREQUENT_CHECK; |
|
|
2782 | |
|
|
2783 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
|
|
2784 | ev_stop (EV_A_ (W)w); |
|
|
2785 | |
|
|
2786 | if (!signals [w->signum - 1].head) |
|
|
2787 | { |
|
|
2788 | #if EV_MULTIPLICITY |
|
|
2789 | signals [w->signum - 1].loop = 0; /* unattach from signal */ |
|
|
2790 | #endif |
|
|
2791 | #if EV_USE_SIGNALFD |
|
|
2792 | if (sigfd >= 0) |
|
|
2793 | { |
|
|
2794 | sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D |
|
|
2795 | sigdelset (&sigfd_set, w->signum); |
|
|
2796 | signalfd (sigfd, &sigfd_set, 0); |
|
|
2797 | sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D |
|
|
2798 | /*TODO: maybe unblock signal? */ |
576 | } |
2799 | } |
577 | else |
2800 | else |
578 | ev_periodic_stop (w); /* nonrepeating: stop timer */ |
2801 | #endif |
579 | |
2802 | signal (w->signum, SIG_DFL); |
580 | event ((W)w, EV_PERIODIC); |
|
|
581 | } |
|
|
582 | } |
|
|
583 | |
|
|
584 | static void |
|
|
585 | periodics_reschedule (ev_tstamp diff) |
|
|
586 | { |
|
|
587 | int i; |
|
|
588 | |
|
|
589 | /* adjust periodics after time jump */ |
|
|
590 | for (i = 0; i < periodiccnt; ++i) |
|
|
591 | { |
2803 | } |
592 | struct ev_periodic *w = periodics [i]; |
|
|
593 | |
2804 | |
594 | if (w->interval) |
2805 | EV_FREQUENT_CHECK; |
|
|
2806 | } |
|
|
2807 | |
|
|
2808 | void |
|
|
2809 | ev_child_start (EV_P_ ev_child *w) |
|
|
2810 | { |
|
|
2811 | #if EV_MULTIPLICITY |
|
|
2812 | assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2813 | #endif |
|
|
2814 | if (expect_false (ev_is_active (w))) |
|
|
2815 | return; |
|
|
2816 | |
|
|
2817 | EV_FREQUENT_CHECK; |
|
|
2818 | |
|
|
2819 | ev_start (EV_A_ (W)w, 1); |
|
|
2820 | wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
|
|
2821 | |
|
|
2822 | EV_FREQUENT_CHECK; |
|
|
2823 | } |
|
|
2824 | |
|
|
2825 | void |
|
|
2826 | ev_child_stop (EV_P_ ev_child *w) |
|
|
2827 | { |
|
|
2828 | clear_pending (EV_A_ (W)w); |
|
|
2829 | if (expect_false (!ev_is_active (w))) |
|
|
2830 | return; |
|
|
2831 | |
|
|
2832 | EV_FREQUENT_CHECK; |
|
|
2833 | |
|
|
2834 | wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
|
|
2835 | ev_stop (EV_A_ (W)w); |
|
|
2836 | |
|
|
2837 | EV_FREQUENT_CHECK; |
|
|
2838 | } |
|
|
2839 | |
|
|
2840 | #if EV_STAT_ENABLE |
|
|
2841 | |
|
|
2842 | # ifdef _WIN32 |
|
|
2843 | # undef lstat |
|
|
2844 | # define lstat(a,b) _stati64 (a,b) |
|
|
2845 | # endif |
|
|
2846 | |
|
|
2847 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
2848 | #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
|
|
2849 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
2850 | |
|
|
2851 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
2852 | |
|
|
2853 | #if EV_USE_INOTIFY |
|
|
2854 | # define EV_INOTIFY_BUFSIZE 8192 |
|
|
2855 | |
|
|
2856 | static void noinline |
|
|
2857 | infy_add (EV_P_ ev_stat *w) |
|
|
2858 | { |
|
|
2859 | 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); |
|
|
2860 | |
|
|
2861 | if (w->wd >= 0) |
|
|
2862 | { |
|
|
2863 | struct statfs sfs; |
|
|
2864 | |
|
|
2865 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
2866 | /* unless the filesystem is known to be local, we therefore still poll */ |
|
|
2867 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
2868 | |
|
|
2869 | if (!fs_2625) |
|
|
2870 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
2871 | else if (!statfs (w->path, &sfs) |
|
|
2872 | && (sfs.f_type == 0x1373 /* devfs */ |
|
|
2873 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
2874 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
2875 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
2876 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
2877 | || sfs.f_type == 0x58465342 /* xfs */)) |
|
|
2878 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
|
|
2879 | else |
|
|
2880 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
|
|
2881 | } |
|
|
2882 | else |
|
|
2883 | { |
|
|
2884 | /* can't use inotify, continue to stat */ |
|
|
2885 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
2886 | |
|
|
2887 | /* if path is not there, monitor some parent directory for speedup hints */ |
|
|
2888 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
|
|
2889 | /* but an efficiency issue only */ |
|
|
2890 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
595 | { |
2891 | { |
596 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
2892 | char path [4096]; |
|
|
2893 | strcpy (path, w->path); |
597 | |
2894 | |
598 | if (fabs (diff) >= 1e-4) |
2895 | do |
599 | { |
2896 | { |
600 | ev_periodic_stop (w); |
2897 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
601 | ev_periodic_start (w); |
2898 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
602 | |
2899 | |
603 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
2900 | char *pend = strrchr (path, '/'); |
|
|
2901 | |
|
|
2902 | if (!pend || pend == path) |
|
|
2903 | break; |
|
|
2904 | |
|
|
2905 | *pend = 0; |
|
|
2906 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
2907 | } |
|
|
2908 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
2909 | } |
|
|
2910 | } |
|
|
2911 | |
|
|
2912 | if (w->wd >= 0) |
|
|
2913 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
2914 | |
|
|
2915 | /* now re-arm timer, if required */ |
|
|
2916 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
|
|
2917 | ev_timer_again (EV_A_ &w->timer); |
|
|
2918 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
2919 | } |
|
|
2920 | |
|
|
2921 | static void noinline |
|
|
2922 | infy_del (EV_P_ ev_stat *w) |
|
|
2923 | { |
|
|
2924 | int slot; |
|
|
2925 | int wd = w->wd; |
|
|
2926 | |
|
|
2927 | if (wd < 0) |
|
|
2928 | return; |
|
|
2929 | |
|
|
2930 | w->wd = -2; |
|
|
2931 | slot = wd & (EV_INOTIFY_HASHSIZE - 1); |
|
|
2932 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
2933 | |
|
|
2934 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
2935 | inotify_rm_watch (fs_fd, wd); |
|
|
2936 | } |
|
|
2937 | |
|
|
2938 | static void noinline |
|
|
2939 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
2940 | { |
|
|
2941 | if (slot < 0) |
|
|
2942 | /* overflow, need to check for all hash slots */ |
|
|
2943 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2944 | infy_wd (EV_A_ slot, wd, ev); |
|
|
2945 | else |
|
|
2946 | { |
|
|
2947 | WL w_; |
|
|
2948 | |
|
|
2949 | for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) |
|
|
2950 | { |
|
|
2951 | ev_stat *w = (ev_stat *)w_; |
|
|
2952 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
2953 | |
|
|
2954 | if (w->wd == wd || wd == -1) |
|
|
2955 | { |
|
|
2956 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
2957 | { |
|
|
2958 | wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
2959 | w->wd = -1; |
|
|
2960 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2961 | } |
|
|
2962 | |
|
|
2963 | stat_timer_cb (EV_A_ &w->timer, 0); |
604 | } |
2964 | } |
605 | } |
2965 | } |
606 | } |
2966 | } |
607 | } |
2967 | } |
608 | |
2968 | |
609 | static void |
2969 | static void |
610 | time_update (void) |
2970 | infy_cb (EV_P_ ev_io *w, int revents) |
611 | { |
2971 | { |
|
|
2972 | char buf [EV_INOTIFY_BUFSIZE]; |
|
|
2973 | struct inotify_event *ev = (struct inotify_event *)buf; |
612 | int i; |
2974 | int ofs; |
|
|
2975 | int len = read (fs_fd, buf, sizeof (buf)); |
613 | |
2976 | |
614 | ev_now = ev_time (); |
2977 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
|
|
2978 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
2979 | } |
615 | |
2980 | |
616 | if (have_monotonic) |
2981 | inline_size void |
|
|
2982 | check_2625 (EV_P) |
|
|
2983 | { |
|
|
2984 | /* kernels < 2.6.25 are borked |
|
|
2985 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
|
|
2986 | */ |
|
|
2987 | struct utsname buf; |
|
|
2988 | int major, minor, micro; |
|
|
2989 | |
|
|
2990 | if (uname (&buf)) |
|
|
2991 | return; |
|
|
2992 | |
|
|
2993 | if (sscanf (buf.release, "%d.%d.%d", &major, &minor, µ) != 3) |
|
|
2994 | return; |
|
|
2995 | |
|
|
2996 | if (major < 2 |
|
|
2997 | || (major == 2 && minor < 6) |
|
|
2998 | || (major == 2 && minor == 6 && micro < 25)) |
|
|
2999 | return; |
|
|
3000 | |
|
|
3001 | fs_2625 = 1; |
|
|
3002 | } |
|
|
3003 | |
|
|
3004 | inline_size int |
|
|
3005 | infy_newfd (void) |
|
|
3006 | { |
|
|
3007 | #if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) |
|
|
3008 | int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); |
|
|
3009 | if (fd >= 0) |
|
|
3010 | return fd; |
|
|
3011 | #endif |
|
|
3012 | return inotify_init (); |
|
|
3013 | } |
|
|
3014 | |
|
|
3015 | inline_size void |
|
|
3016 | infy_init (EV_P) |
|
|
3017 | { |
|
|
3018 | if (fs_fd != -2) |
|
|
3019 | return; |
|
|
3020 | |
|
|
3021 | fs_fd = -1; |
|
|
3022 | |
|
|
3023 | check_2625 (EV_A); |
|
|
3024 | |
|
|
3025 | fs_fd = infy_newfd (); |
|
|
3026 | |
|
|
3027 | if (fs_fd >= 0) |
|
|
3028 | { |
|
|
3029 | fd_intern (fs_fd); |
|
|
3030 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
3031 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
3032 | ev_io_start (EV_A_ &fs_w); |
|
|
3033 | ev_unref (EV_A); |
617 | { |
3034 | } |
618 | ev_tstamp odiff = diff; |
3035 | } |
619 | |
3036 | |
620 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
3037 | inline_size void |
|
|
3038 | infy_fork (EV_P) |
|
|
3039 | { |
|
|
3040 | int slot; |
|
|
3041 | |
|
|
3042 | if (fs_fd < 0) |
|
|
3043 | return; |
|
|
3044 | |
|
|
3045 | ev_ref (EV_A); |
|
|
3046 | ev_io_stop (EV_A_ &fs_w); |
|
|
3047 | close (fs_fd); |
|
|
3048 | fs_fd = infy_newfd (); |
|
|
3049 | |
|
|
3050 | if (fs_fd >= 0) |
|
|
3051 | { |
|
|
3052 | fd_intern (fs_fd); |
|
|
3053 | ev_io_set (&fs_w, fs_fd, EV_READ); |
|
|
3054 | ev_io_start (EV_A_ &fs_w); |
|
|
3055 | ev_unref (EV_A); |
|
|
3056 | } |
|
|
3057 | |
|
|
3058 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
3059 | { |
|
|
3060 | WL w_ = fs_hash [slot].head; |
|
|
3061 | fs_hash [slot].head = 0; |
|
|
3062 | |
|
|
3063 | while (w_) |
621 | { |
3064 | { |
622 | now = get_clock (); |
3065 | ev_stat *w = (ev_stat *)w_; |
623 | diff = ev_now - now; |
3066 | w_ = w_->next; /* lets us add this watcher */ |
624 | |
3067 | |
625 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
3068 | w->wd = -1; |
626 | return; /* all is well */ |
|
|
627 | |
3069 | |
628 | ev_now = ev_time (); |
3070 | if (fs_fd >= 0) |
|
|
3071 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
3072 | else |
|
|
3073 | { |
|
|
3074 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
3075 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
|
|
3076 | ev_timer_again (EV_A_ &w->timer); |
|
|
3077 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
3078 | } |
629 | } |
3079 | } |
630 | |
|
|
631 | periodics_reschedule (diff - odiff); |
|
|
632 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
633 | } |
3080 | } |
|
|
3081 | } |
|
|
3082 | |
|
|
3083 | #endif |
|
|
3084 | |
|
|
3085 | #ifdef _WIN32 |
|
|
3086 | # define EV_LSTAT(p,b) _stati64 (p, b) |
|
|
3087 | #else |
|
|
3088 | # define EV_LSTAT(p,b) lstat (p, b) |
|
|
3089 | #endif |
|
|
3090 | |
|
|
3091 | void |
|
|
3092 | ev_stat_stat (EV_P_ ev_stat *w) |
|
|
3093 | { |
|
|
3094 | if (lstat (w->path, &w->attr) < 0) |
|
|
3095 | w->attr.st_nlink = 0; |
|
|
3096 | else if (!w->attr.st_nlink) |
|
|
3097 | w->attr.st_nlink = 1; |
|
|
3098 | } |
|
|
3099 | |
|
|
3100 | static void noinline |
|
|
3101 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
3102 | { |
|
|
3103 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
3104 | |
|
|
3105 | /* we copy this here each the time so that */ |
|
|
3106 | /* prev has the old value when the callback gets invoked */ |
|
|
3107 | w->prev = w->attr; |
|
|
3108 | ev_stat_stat (EV_A_ w); |
|
|
3109 | |
|
|
3110 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
3111 | if ( |
|
|
3112 | w->prev.st_dev != w->attr.st_dev |
|
|
3113 | || w->prev.st_ino != w->attr.st_ino |
|
|
3114 | || w->prev.st_mode != w->attr.st_mode |
|
|
3115 | || w->prev.st_nlink != w->attr.st_nlink |
|
|
3116 | || w->prev.st_uid != w->attr.st_uid |
|
|
3117 | || w->prev.st_gid != w->attr.st_gid |
|
|
3118 | || w->prev.st_rdev != w->attr.st_rdev |
|
|
3119 | || w->prev.st_size != w->attr.st_size |
|
|
3120 | || w->prev.st_atime != w->attr.st_atime |
|
|
3121 | || w->prev.st_mtime != w->attr.st_mtime |
|
|
3122 | || w->prev.st_ctime != w->attr.st_ctime |
|
|
3123 | ) { |
|
|
3124 | #if EV_USE_INOTIFY |
|
|
3125 | if (fs_fd >= 0) |
|
|
3126 | { |
|
|
3127 | infy_del (EV_A_ w); |
|
|
3128 | infy_add (EV_A_ w); |
|
|
3129 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
3130 | } |
|
|
3131 | #endif |
|
|
3132 | |
|
|
3133 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
3134 | } |
|
|
3135 | } |
|
|
3136 | |
|
|
3137 | void |
|
|
3138 | ev_stat_start (EV_P_ ev_stat *w) |
|
|
3139 | { |
|
|
3140 | if (expect_false (ev_is_active (w))) |
|
|
3141 | return; |
|
|
3142 | |
|
|
3143 | ev_stat_stat (EV_A_ w); |
|
|
3144 | |
|
|
3145 | if (w->interval < MIN_STAT_INTERVAL && w->interval) |
|
|
3146 | w->interval = MIN_STAT_INTERVAL; |
|
|
3147 | |
|
|
3148 | ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL); |
|
|
3149 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
3150 | |
|
|
3151 | #if EV_USE_INOTIFY |
|
|
3152 | infy_init (EV_A); |
|
|
3153 | |
|
|
3154 | if (fs_fd >= 0) |
|
|
3155 | infy_add (EV_A_ w); |
634 | else |
3156 | else |
|
|
3157 | #endif |
|
|
3158 | { |
|
|
3159 | ev_timer_again (EV_A_ &w->timer); |
|
|
3160 | ev_unref (EV_A); |
635 | { |
3161 | } |
636 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
3162 | |
|
|
3163 | ev_start (EV_A_ (W)w, 1); |
|
|
3164 | |
|
|
3165 | EV_FREQUENT_CHECK; |
|
|
3166 | } |
|
|
3167 | |
|
|
3168 | void |
|
|
3169 | ev_stat_stop (EV_P_ ev_stat *w) |
|
|
3170 | { |
|
|
3171 | clear_pending (EV_A_ (W)w); |
|
|
3172 | if (expect_false (!ev_is_active (w))) |
|
|
3173 | return; |
|
|
3174 | |
|
|
3175 | EV_FREQUENT_CHECK; |
|
|
3176 | |
|
|
3177 | #if EV_USE_INOTIFY |
|
|
3178 | infy_del (EV_A_ w); |
|
|
3179 | #endif |
|
|
3180 | |
|
|
3181 | if (ev_is_active (&w->timer)) |
|
|
3182 | { |
|
|
3183 | ev_ref (EV_A); |
|
|
3184 | ev_timer_stop (EV_A_ &w->timer); |
|
|
3185 | } |
|
|
3186 | |
|
|
3187 | ev_stop (EV_A_ (W)w); |
|
|
3188 | |
|
|
3189 | EV_FREQUENT_CHECK; |
|
|
3190 | } |
|
|
3191 | #endif |
|
|
3192 | |
|
|
3193 | #if EV_IDLE_ENABLE |
|
|
3194 | void |
|
|
3195 | ev_idle_start (EV_P_ ev_idle *w) |
|
|
3196 | { |
|
|
3197 | if (expect_false (ev_is_active (w))) |
|
|
3198 | return; |
|
|
3199 | |
|
|
3200 | pri_adjust (EV_A_ (W)w); |
|
|
3201 | |
|
|
3202 | EV_FREQUENT_CHECK; |
|
|
3203 | |
|
|
3204 | { |
|
|
3205 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
3206 | |
|
|
3207 | ++idleall; |
|
|
3208 | ev_start (EV_A_ (W)w, active); |
|
|
3209 | |
|
|
3210 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
|
|
3211 | idles [ABSPRI (w)][active - 1] = w; |
|
|
3212 | } |
|
|
3213 | |
|
|
3214 | EV_FREQUENT_CHECK; |
|
|
3215 | } |
|
|
3216 | |
|
|
3217 | void |
|
|
3218 | ev_idle_stop (EV_P_ ev_idle *w) |
|
|
3219 | { |
|
|
3220 | clear_pending (EV_A_ (W)w); |
|
|
3221 | if (expect_false (!ev_is_active (w))) |
|
|
3222 | return; |
|
|
3223 | |
|
|
3224 | EV_FREQUENT_CHECK; |
|
|
3225 | |
|
|
3226 | { |
|
|
3227 | int active = ev_active (w); |
|
|
3228 | |
|
|
3229 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
3230 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
|
|
3231 | |
|
|
3232 | ev_stop (EV_A_ (W)w); |
|
|
3233 | --idleall; |
|
|
3234 | } |
|
|
3235 | |
|
|
3236 | EV_FREQUENT_CHECK; |
|
|
3237 | } |
|
|
3238 | #endif |
|
|
3239 | |
|
|
3240 | void |
|
|
3241 | ev_prepare_start (EV_P_ ev_prepare *w) |
|
|
3242 | { |
|
|
3243 | if (expect_false (ev_is_active (w))) |
|
|
3244 | return; |
|
|
3245 | |
|
|
3246 | EV_FREQUENT_CHECK; |
|
|
3247 | |
|
|
3248 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
3249 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
|
|
3250 | prepares [preparecnt - 1] = w; |
|
|
3251 | |
|
|
3252 | EV_FREQUENT_CHECK; |
|
|
3253 | } |
|
|
3254 | |
|
|
3255 | void |
|
|
3256 | ev_prepare_stop (EV_P_ ev_prepare *w) |
|
|
3257 | { |
|
|
3258 | clear_pending (EV_A_ (W)w); |
|
|
3259 | if (expect_false (!ev_is_active (w))) |
|
|
3260 | return; |
|
|
3261 | |
|
|
3262 | EV_FREQUENT_CHECK; |
|
|
3263 | |
|
|
3264 | { |
|
|
3265 | int active = ev_active (w); |
|
|
3266 | |
|
|
3267 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
3268 | ev_active (prepares [active - 1]) = active; |
|
|
3269 | } |
|
|
3270 | |
|
|
3271 | ev_stop (EV_A_ (W)w); |
|
|
3272 | |
|
|
3273 | EV_FREQUENT_CHECK; |
|
|
3274 | } |
|
|
3275 | |
|
|
3276 | void |
|
|
3277 | ev_check_start (EV_P_ ev_check *w) |
|
|
3278 | { |
|
|
3279 | if (expect_false (ev_is_active (w))) |
|
|
3280 | return; |
|
|
3281 | |
|
|
3282 | EV_FREQUENT_CHECK; |
|
|
3283 | |
|
|
3284 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
3285 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
3286 | checks [checkcnt - 1] = w; |
|
|
3287 | |
|
|
3288 | EV_FREQUENT_CHECK; |
|
|
3289 | } |
|
|
3290 | |
|
|
3291 | void |
|
|
3292 | ev_check_stop (EV_P_ ev_check *w) |
|
|
3293 | { |
|
|
3294 | clear_pending (EV_A_ (W)w); |
|
|
3295 | if (expect_false (!ev_is_active (w))) |
|
|
3296 | return; |
|
|
3297 | |
|
|
3298 | EV_FREQUENT_CHECK; |
|
|
3299 | |
|
|
3300 | { |
|
|
3301 | int active = ev_active (w); |
|
|
3302 | |
|
|
3303 | checks [active - 1] = checks [--checkcnt]; |
|
|
3304 | ev_active (checks [active - 1]) = active; |
|
|
3305 | } |
|
|
3306 | |
|
|
3307 | ev_stop (EV_A_ (W)w); |
|
|
3308 | |
|
|
3309 | EV_FREQUENT_CHECK; |
|
|
3310 | } |
|
|
3311 | |
|
|
3312 | #if EV_EMBED_ENABLE |
|
|
3313 | void noinline |
|
|
3314 | ev_embed_sweep (EV_P_ ev_embed *w) |
|
|
3315 | { |
|
|
3316 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
3317 | } |
|
|
3318 | |
|
|
3319 | static void |
|
|
3320 | embed_io_cb (EV_P_ ev_io *io, int revents) |
|
|
3321 | { |
|
|
3322 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
|
|
3323 | |
|
|
3324 | if (ev_cb (w)) |
|
|
3325 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
3326 | else |
|
|
3327 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
3328 | } |
|
|
3329 | |
|
|
3330 | static void |
|
|
3331 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
3332 | { |
|
|
3333 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
3334 | |
|
|
3335 | { |
|
|
3336 | EV_P = w->other; |
|
|
3337 | |
|
|
3338 | while (fdchangecnt) |
637 | { |
3339 | { |
638 | periodics_reschedule (ev_now - now); |
3340 | fd_reify (EV_A); |
639 | |
3341 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
640 | /* adjust timers. this is easy, as the offset is the same for all */ |
|
|
641 | for (i = 0; i < timercnt; ++i) |
|
|
642 | timers [i]->at += diff; |
|
|
643 | } |
3342 | } |
644 | |
|
|
645 | now = ev_now; |
|
|
646 | } |
3343 | } |
647 | } |
3344 | } |
648 | |
3345 | |
649 | int ev_loop_done; |
3346 | static void |
650 | |
3347 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
651 | void ev_loop (int flags) |
|
|
652 | { |
3348 | { |
653 | double block; |
3349 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
654 | ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
|
|
655 | |
3350 | |
656 | do |
3351 | ev_embed_stop (EV_A_ w); |
|
|
3352 | |
657 | { |
3353 | { |
658 | /* queue check watchers (and execute them) */ |
3354 | EV_P = w->other; |
659 | if (preparecnt) |
|
|
660 | { |
|
|
661 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
|
|
662 | call_pending (); |
|
|
663 | } |
|
|
664 | |
3355 | |
665 | /* update fd-related kernel structures */ |
3356 | ev_loop_fork (EV_A); |
666 | fd_reify (); |
3357 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
667 | |
|
|
668 | /* calculate blocking time */ |
|
|
669 | |
|
|
670 | /* we only need this for !monotonic clockor timers, but as we basically |
|
|
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 | { |
|
|
678 | block = MAX_BLOCKTIME; |
|
|
679 | |
|
|
680 | if (timercnt) |
|
|
681 | { |
|
|
682 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
|
|
683 | if (block > to) block = to; |
|
|
684 | } |
|
|
685 | |
|
|
686 | if (periodiccnt) |
|
|
687 | { |
|
|
688 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
|
|
689 | if (block > to) block = to; |
|
|
690 | } |
|
|
691 | |
|
|
692 | if (block < 0.) block = 0.; |
|
|
693 | } |
|
|
694 | |
|
|
695 | method_poll (block); |
|
|
696 | |
|
|
697 | /* update ev_now, do magic */ |
|
|
698 | time_update (); |
|
|
699 | |
|
|
700 | /* queue pending timers and reschedule them */ |
|
|
701 | timers_reify (); /* relative timers called last */ |
|
|
702 | periodics_reify (); /* absolute timers called first */ |
|
|
703 | |
|
|
704 | /* queue idle watchers unless io or timers are pending */ |
|
|
705 | if (!pendingcnt) |
|
|
706 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
|
|
707 | |
|
|
708 | /* queue check watchers, to be executed first */ |
|
|
709 | if (checkcnt) |
|
|
710 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
|
|
711 | |
|
|
712 | call_pending (); |
|
|
713 | } |
3358 | } |
714 | while (!ev_loop_done); |
|
|
715 | |
3359 | |
716 | if (ev_loop_done != 2) |
3360 | ev_embed_start (EV_A_ w); |
717 | ev_loop_done = 0; |
|
|
718 | } |
3361 | } |
|
|
3362 | |
|
|
3363 | #if 0 |
|
|
3364 | static void |
|
|
3365 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
3366 | { |
|
|
3367 | ev_idle_stop (EV_A_ idle); |
|
|
3368 | } |
|
|
3369 | #endif |
|
|
3370 | |
|
|
3371 | void |
|
|
3372 | ev_embed_start (EV_P_ ev_embed *w) |
|
|
3373 | { |
|
|
3374 | if (expect_false (ev_is_active (w))) |
|
|
3375 | return; |
|
|
3376 | |
|
|
3377 | { |
|
|
3378 | EV_P = w->other; |
|
|
3379 | assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
3380 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
|
|
3381 | } |
|
|
3382 | |
|
|
3383 | EV_FREQUENT_CHECK; |
|
|
3384 | |
|
|
3385 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
3386 | ev_io_start (EV_A_ &w->io); |
|
|
3387 | |
|
|
3388 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
3389 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
3390 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
3391 | |
|
|
3392 | ev_fork_init (&w->fork, embed_fork_cb); |
|
|
3393 | ev_fork_start (EV_A_ &w->fork); |
|
|
3394 | |
|
|
3395 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
3396 | |
|
|
3397 | ev_start (EV_A_ (W)w, 1); |
|
|
3398 | |
|
|
3399 | EV_FREQUENT_CHECK; |
|
|
3400 | } |
|
|
3401 | |
|
|
3402 | void |
|
|
3403 | ev_embed_stop (EV_P_ ev_embed *w) |
|
|
3404 | { |
|
|
3405 | clear_pending (EV_A_ (W)w); |
|
|
3406 | if (expect_false (!ev_is_active (w))) |
|
|
3407 | return; |
|
|
3408 | |
|
|
3409 | EV_FREQUENT_CHECK; |
|
|
3410 | |
|
|
3411 | ev_io_stop (EV_A_ &w->io); |
|
|
3412 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
3413 | ev_fork_stop (EV_A_ &w->fork); |
|
|
3414 | |
|
|
3415 | EV_FREQUENT_CHECK; |
|
|
3416 | } |
|
|
3417 | #endif |
|
|
3418 | |
|
|
3419 | #if EV_FORK_ENABLE |
|
|
3420 | void |
|
|
3421 | ev_fork_start (EV_P_ ev_fork *w) |
|
|
3422 | { |
|
|
3423 | if (expect_false (ev_is_active (w))) |
|
|
3424 | return; |
|
|
3425 | |
|
|
3426 | EV_FREQUENT_CHECK; |
|
|
3427 | |
|
|
3428 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
3429 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
3430 | forks [forkcnt - 1] = w; |
|
|
3431 | |
|
|
3432 | EV_FREQUENT_CHECK; |
|
|
3433 | } |
|
|
3434 | |
|
|
3435 | void |
|
|
3436 | ev_fork_stop (EV_P_ ev_fork *w) |
|
|
3437 | { |
|
|
3438 | clear_pending (EV_A_ (W)w); |
|
|
3439 | if (expect_false (!ev_is_active (w))) |
|
|
3440 | return; |
|
|
3441 | |
|
|
3442 | EV_FREQUENT_CHECK; |
|
|
3443 | |
|
|
3444 | { |
|
|
3445 | int active = ev_active (w); |
|
|
3446 | |
|
|
3447 | forks [active - 1] = forks [--forkcnt]; |
|
|
3448 | ev_active (forks [active - 1]) = active; |
|
|
3449 | } |
|
|
3450 | |
|
|
3451 | ev_stop (EV_A_ (W)w); |
|
|
3452 | |
|
|
3453 | EV_FREQUENT_CHECK; |
|
|
3454 | } |
|
|
3455 | #endif |
|
|
3456 | |
|
|
3457 | #if EV_ASYNC_ENABLE |
|
|
3458 | void |
|
|
3459 | ev_async_start (EV_P_ ev_async *w) |
|
|
3460 | { |
|
|
3461 | if (expect_false (ev_is_active (w))) |
|
|
3462 | return; |
|
|
3463 | |
|
|
3464 | evpipe_init (EV_A); |
|
|
3465 | |
|
|
3466 | EV_FREQUENT_CHECK; |
|
|
3467 | |
|
|
3468 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
3469 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
3470 | asyncs [asynccnt - 1] = w; |
|
|
3471 | |
|
|
3472 | EV_FREQUENT_CHECK; |
|
|
3473 | } |
|
|
3474 | |
|
|
3475 | void |
|
|
3476 | ev_async_stop (EV_P_ ev_async *w) |
|
|
3477 | { |
|
|
3478 | clear_pending (EV_A_ (W)w); |
|
|
3479 | if (expect_false (!ev_is_active (w))) |
|
|
3480 | return; |
|
|
3481 | |
|
|
3482 | EV_FREQUENT_CHECK; |
|
|
3483 | |
|
|
3484 | { |
|
|
3485 | int active = ev_active (w); |
|
|
3486 | |
|
|
3487 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
3488 | ev_active (asyncs [active - 1]) = active; |
|
|
3489 | } |
|
|
3490 | |
|
|
3491 | ev_stop (EV_A_ (W)w); |
|
|
3492 | |
|
|
3493 | EV_FREQUENT_CHECK; |
|
|
3494 | } |
|
|
3495 | |
|
|
3496 | void |
|
|
3497 | ev_async_send (EV_P_ ev_async *w) |
|
|
3498 | { |
|
|
3499 | w->sent = 1; |
|
|
3500 | evpipe_write (EV_A_ &async_pending); |
|
|
3501 | } |
|
|
3502 | #endif |
719 | |
3503 | |
720 | /*****************************************************************************/ |
3504 | /*****************************************************************************/ |
721 | |
3505 | |
722 | static void |
|
|
723 | wlist_add (WL *head, WL elem) |
|
|
724 | { |
|
|
725 | elem->next = *head; |
|
|
726 | *head = elem; |
|
|
727 | } |
|
|
728 | |
|
|
729 | static void |
|
|
730 | wlist_del (WL *head, WL elem) |
|
|
731 | { |
|
|
732 | while (*head) |
|
|
733 | { |
|
|
734 | if (*head == elem) |
|
|
735 | { |
|
|
736 | *head = elem->next; |
|
|
737 | return; |
|
|
738 | } |
|
|
739 | |
|
|
740 | head = &(*head)->next; |
|
|
741 | } |
|
|
742 | } |
|
|
743 | |
|
|
744 | static void |
|
|
745 | ev_clear_pending (W w) |
|
|
746 | { |
|
|
747 | if (w->pending) |
|
|
748 | { |
|
|
749 | pendings [w->pending - 1].w = 0; |
|
|
750 | w->pending = 0; |
|
|
751 | } |
|
|
752 | } |
|
|
753 | |
|
|
754 | static void |
|
|
755 | ev_start (W w, int active) |
|
|
756 | { |
|
|
757 | w->active = active; |
|
|
758 | } |
|
|
759 | |
|
|
760 | static void |
|
|
761 | ev_stop (W w) |
|
|
762 | { |
|
|
763 | w->active = 0; |
|
|
764 | } |
|
|
765 | |
|
|
766 | /*****************************************************************************/ |
|
|
767 | |
|
|
768 | void |
|
|
769 | ev_io_start (struct ev_io *w) |
|
|
770 | { |
|
|
771 | int fd = w->fd; |
|
|
772 | |
|
|
773 | if (ev_is_active (w)) |
|
|
774 | return; |
|
|
775 | |
|
|
776 | assert (("ev_io_start called with negative fd", fd >= 0)); |
|
|
777 | |
|
|
778 | ev_start ((W)w, 1); |
|
|
779 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
|
|
780 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
|
|
781 | |
|
|
782 | fd_change (fd); |
|
|
783 | } |
|
|
784 | |
|
|
785 | void |
|
|
786 | ev_io_stop (struct ev_io *w) |
|
|
787 | { |
|
|
788 | ev_clear_pending ((W)w); |
|
|
789 | if (!ev_is_active (w)) |
|
|
790 | return; |
|
|
791 | |
|
|
792 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
|
|
793 | ev_stop ((W)w); |
|
|
794 | |
|
|
795 | fd_change (w->fd); |
|
|
796 | } |
|
|
797 | |
|
|
798 | void |
|
|
799 | ev_timer_start (struct ev_timer *w) |
|
|
800 | { |
|
|
801 | if (ev_is_active (w)) |
|
|
802 | return; |
|
|
803 | |
|
|
804 | w->at += now; |
|
|
805 | |
|
|
806 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
|
|
807 | |
|
|
808 | ev_start ((W)w, ++timercnt); |
|
|
809 | array_needsize (timers, timermax, timercnt, ); |
|
|
810 | timers [timercnt - 1] = w; |
|
|
811 | upheap ((WT *)timers, timercnt - 1); |
|
|
812 | } |
|
|
813 | |
|
|
814 | void |
|
|
815 | ev_timer_stop (struct ev_timer *w) |
|
|
816 | { |
|
|
817 | ev_clear_pending ((W)w); |
|
|
818 | if (!ev_is_active (w)) |
|
|
819 | return; |
|
|
820 | |
|
|
821 | if (w->active < timercnt--) |
|
|
822 | { |
|
|
823 | timers [w->active - 1] = timers [timercnt]; |
|
|
824 | downheap ((WT *)timers, timercnt, w->active - 1); |
|
|
825 | } |
|
|
826 | |
|
|
827 | w->at = w->repeat; |
|
|
828 | |
|
|
829 | ev_stop ((W)w); |
|
|
830 | } |
|
|
831 | |
|
|
832 | void |
|
|
833 | ev_timer_again (struct ev_timer *w) |
|
|
834 | { |
|
|
835 | if (ev_is_active (w)) |
|
|
836 | { |
|
|
837 | if (w->repeat) |
|
|
838 | { |
|
|
839 | w->at = now + w->repeat; |
|
|
840 | downheap ((WT *)timers, timercnt, w->active - 1); |
|
|
841 | } |
|
|
842 | else |
|
|
843 | ev_timer_stop (w); |
|
|
844 | } |
|
|
845 | else if (w->repeat) |
|
|
846 | ev_timer_start (w); |
|
|
847 | } |
|
|
848 | |
|
|
849 | void |
|
|
850 | ev_periodic_start (struct ev_periodic *w) |
|
|
851 | { |
|
|
852 | if (ev_is_active (w)) |
|
|
853 | return; |
|
|
854 | |
|
|
855 | 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 */ |
|
|
858 | if (w->interval) |
|
|
859 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
|
|
860 | |
|
|
861 | ev_start ((W)w, ++periodiccnt); |
|
|
862 | array_needsize (periodics, periodicmax, periodiccnt, ); |
|
|
863 | periodics [periodiccnt - 1] = w; |
|
|
864 | upheap ((WT *)periodics, periodiccnt - 1); |
|
|
865 | } |
|
|
866 | |
|
|
867 | void |
|
|
868 | ev_periodic_stop (struct ev_periodic *w) |
|
|
869 | { |
|
|
870 | ev_clear_pending ((W)w); |
|
|
871 | if (!ev_is_active (w)) |
|
|
872 | return; |
|
|
873 | |
|
|
874 | if (w->active < periodiccnt--) |
|
|
875 | { |
|
|
876 | periodics [w->active - 1] = periodics [periodiccnt]; |
|
|
877 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
|
|
878 | } |
|
|
879 | |
|
|
880 | ev_stop ((W)w); |
|
|
881 | } |
|
|
882 | |
|
|
883 | void |
|
|
884 | ev_signal_start (struct ev_signal *w) |
|
|
885 | { |
|
|
886 | if (ev_is_active (w)) |
|
|
887 | return; |
|
|
888 | |
|
|
889 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
890 | |
|
|
891 | ev_start ((W)w, 1); |
|
|
892 | array_needsize (signals, signalmax, w->signum, signals_init); |
|
|
893 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
894 | |
|
|
895 | if (!w->next) |
|
|
896 | { |
|
|
897 | struct sigaction sa; |
|
|
898 | sa.sa_handler = sighandler; |
|
|
899 | sigfillset (&sa.sa_mask); |
|
|
900 | sa.sa_flags = 0; |
|
|
901 | sigaction (w->signum, &sa, 0); |
|
|
902 | } |
|
|
903 | } |
|
|
904 | |
|
|
905 | void |
|
|
906 | ev_signal_stop (struct ev_signal *w) |
|
|
907 | { |
|
|
908 | ev_clear_pending ((W)w); |
|
|
909 | if (!ev_is_active (w)) |
|
|
910 | return; |
|
|
911 | |
|
|
912 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
913 | ev_stop ((W)w); |
|
|
914 | |
|
|
915 | if (!signals [w->signum - 1].head) |
|
|
916 | signal (w->signum, SIG_DFL); |
|
|
917 | } |
|
|
918 | |
|
|
919 | void |
|
|
920 | ev_idle_start (struct ev_idle *w) |
|
|
921 | { |
|
|
922 | if (ev_is_active (w)) |
|
|
923 | return; |
|
|
924 | |
|
|
925 | ev_start ((W)w, ++idlecnt); |
|
|
926 | array_needsize (idles, idlemax, idlecnt, ); |
|
|
927 | idles [idlecnt - 1] = w; |
|
|
928 | } |
|
|
929 | |
|
|
930 | void |
|
|
931 | ev_idle_stop (struct ev_idle *w) |
|
|
932 | { |
|
|
933 | ev_clear_pending ((W)w); |
|
|
934 | if (ev_is_active (w)) |
|
|
935 | return; |
|
|
936 | |
|
|
937 | idles [w->active - 1] = idles [--idlecnt]; |
|
|
938 | ev_stop ((W)w); |
|
|
939 | } |
|
|
940 | |
|
|
941 | void |
|
|
942 | ev_prepare_start (struct ev_prepare *w) |
|
|
943 | { |
|
|
944 | if (ev_is_active (w)) |
|
|
945 | return; |
|
|
946 | |
|
|
947 | ev_start ((W)w, ++preparecnt); |
|
|
948 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
949 | prepares [preparecnt - 1] = w; |
|
|
950 | } |
|
|
951 | |
|
|
952 | void |
|
|
953 | ev_prepare_stop (struct ev_prepare *w) |
|
|
954 | { |
|
|
955 | ev_clear_pending ((W)w); |
|
|
956 | if (ev_is_active (w)) |
|
|
957 | return; |
|
|
958 | |
|
|
959 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
960 | ev_stop ((W)w); |
|
|
961 | } |
|
|
962 | |
|
|
963 | void |
|
|
964 | ev_check_start (struct ev_check *w) |
|
|
965 | { |
|
|
966 | if (ev_is_active (w)) |
|
|
967 | return; |
|
|
968 | |
|
|
969 | ev_start ((W)w, ++checkcnt); |
|
|
970 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
971 | checks [checkcnt - 1] = w; |
|
|
972 | } |
|
|
973 | |
|
|
974 | void |
|
|
975 | ev_check_stop (struct ev_check *w) |
|
|
976 | { |
|
|
977 | ev_clear_pending ((W)w); |
|
|
978 | if (ev_is_active (w)) |
|
|
979 | return; |
|
|
980 | |
|
|
981 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
982 | ev_stop ((W)w); |
|
|
983 | } |
|
|
984 | |
|
|
985 | void |
|
|
986 | ev_child_start (struct ev_child *w) |
|
|
987 | { |
|
|
988 | if (ev_is_active (w)) |
|
|
989 | return; |
|
|
990 | |
|
|
991 | ev_start ((W)w, 1); |
|
|
992 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
993 | } |
|
|
994 | |
|
|
995 | void |
|
|
996 | ev_child_stop (struct ev_child *w) |
|
|
997 | { |
|
|
998 | ev_clear_pending ((W)w); |
|
|
999 | if (ev_is_active (w)) |
|
|
1000 | return; |
|
|
1001 | |
|
|
1002 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1003 | ev_stop ((W)w); |
|
|
1004 | } |
|
|
1005 | |
|
|
1006 | /*****************************************************************************/ |
|
|
1007 | |
|
|
1008 | struct ev_once |
3506 | struct ev_once |
1009 | { |
3507 | { |
1010 | struct ev_io io; |
3508 | ev_io io; |
1011 | struct ev_timer to; |
3509 | ev_timer to; |
1012 | void (*cb)(int revents, void *arg); |
3510 | void (*cb)(int revents, void *arg); |
1013 | void *arg; |
3511 | void *arg; |
1014 | }; |
3512 | }; |
1015 | |
3513 | |
1016 | static void |
3514 | static void |
1017 | once_cb (struct ev_once *once, int revents) |
3515 | once_cb (EV_P_ struct ev_once *once, int revents) |
1018 | { |
3516 | { |
1019 | void (*cb)(int revents, void *arg) = once->cb; |
3517 | void (*cb)(int revents, void *arg) = once->cb; |
1020 | void *arg = once->arg; |
3518 | void *arg = once->arg; |
1021 | |
3519 | |
1022 | ev_io_stop (&once->io); |
3520 | ev_io_stop (EV_A_ &once->io); |
1023 | ev_timer_stop (&once->to); |
3521 | ev_timer_stop (EV_A_ &once->to); |
1024 | free (once); |
3522 | ev_free (once); |
1025 | |
3523 | |
1026 | cb (revents, arg); |
3524 | cb (revents, arg); |
1027 | } |
3525 | } |
1028 | |
3526 | |
1029 | static void |
3527 | static void |
1030 | once_cb_io (struct ev_io *w, int revents) |
3528 | once_cb_io (EV_P_ ev_io *w, int revents) |
1031 | { |
3529 | { |
1032 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
3530 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)); |
|
|
3531 | |
|
|
3532 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to)); |
1033 | } |
3533 | } |
1034 | |
3534 | |
1035 | static void |
3535 | static void |
1036 | once_cb_to (struct ev_timer *w, int revents) |
3536 | once_cb_to (EV_P_ ev_timer *w, int revents) |
1037 | { |
3537 | { |
1038 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
3538 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)); |
1039 | } |
|
|
1040 | |
3539 | |
|
|
3540 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); |
|
|
3541 | } |
|
|
3542 | |
1041 | void |
3543 | void |
1042 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
3544 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1043 | { |
3545 | { |
1044 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
3546 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
1045 | |
3547 | |
1046 | if (!once) |
3548 | if (expect_false (!once)) |
|
|
3549 | { |
1047 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
3550 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
1048 | else |
3551 | return; |
1049 | { |
3552 | } |
|
|
3553 | |
1050 | once->cb = cb; |
3554 | once->cb = cb; |
1051 | once->arg = arg; |
3555 | once->arg = arg; |
1052 | |
3556 | |
1053 | ev_watcher_init (&once->io, once_cb_io); |
3557 | ev_init (&once->io, once_cb_io); |
1054 | if (fd >= 0) |
3558 | if (fd >= 0) |
|
|
3559 | { |
|
|
3560 | ev_io_set (&once->io, fd, events); |
|
|
3561 | ev_io_start (EV_A_ &once->io); |
|
|
3562 | } |
|
|
3563 | |
|
|
3564 | ev_init (&once->to, once_cb_to); |
|
|
3565 | if (timeout >= 0.) |
|
|
3566 | { |
|
|
3567 | ev_timer_set (&once->to, timeout, 0.); |
|
|
3568 | ev_timer_start (EV_A_ &once->to); |
|
|
3569 | } |
|
|
3570 | } |
|
|
3571 | |
|
|
3572 | /*****************************************************************************/ |
|
|
3573 | |
|
|
3574 | #if EV_WALK_ENABLE |
|
|
3575 | void |
|
|
3576 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
|
|
3577 | { |
|
|
3578 | int i, j; |
|
|
3579 | ev_watcher_list *wl, *wn; |
|
|
3580 | |
|
|
3581 | if (types & (EV_IO | EV_EMBED)) |
|
|
3582 | for (i = 0; i < anfdmax; ++i) |
|
|
3583 | for (wl = anfds [i].head; wl; ) |
1055 | { |
3584 | { |
1056 | ev_io_set (&once->io, fd, events); |
3585 | wn = wl->next; |
1057 | ev_io_start (&once->io); |
3586 | |
|
|
3587 | #if EV_EMBED_ENABLE |
|
|
3588 | if (ev_cb ((ev_io *)wl) == embed_io_cb) |
|
|
3589 | { |
|
|
3590 | if (types & EV_EMBED) |
|
|
3591 | cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io)); |
|
|
3592 | } |
|
|
3593 | else |
|
|
3594 | #endif |
|
|
3595 | #if EV_USE_INOTIFY |
|
|
3596 | if (ev_cb ((ev_io *)wl) == infy_cb) |
|
|
3597 | ; |
|
|
3598 | else |
|
|
3599 | #endif |
|
|
3600 | if ((ev_io *)wl != &pipe_w) |
|
|
3601 | if (types & EV_IO) |
|
|
3602 | cb (EV_A_ EV_IO, wl); |
|
|
3603 | |
|
|
3604 | wl = wn; |
1058 | } |
3605 | } |
1059 | |
3606 | |
1060 | ev_watcher_init (&once->to, once_cb_to); |
3607 | if (types & (EV_TIMER | EV_STAT)) |
1061 | if (timeout >= 0.) |
3608 | for (i = timercnt + HEAP0; i-- > HEAP0; ) |
|
|
3609 | #if EV_STAT_ENABLE |
|
|
3610 | /*TODO: timer is not always active*/ |
|
|
3611 | if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb) |
1062 | { |
3612 | { |
1063 | ev_timer_set (&once->to, timeout, 0.); |
3613 | if (types & EV_STAT) |
1064 | ev_timer_start (&once->to); |
3614 | cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer)); |
1065 | } |
3615 | } |
1066 | } |
3616 | else |
1067 | } |
3617 | #endif |
|
|
3618 | if (types & EV_TIMER) |
|
|
3619 | cb (EV_A_ EV_TIMER, ANHE_w (timers [i])); |
1068 | |
3620 | |
1069 | /*****************************************************************************/ |
3621 | #if EV_PERIODIC_ENABLE |
|
|
3622 | if (types & EV_PERIODIC) |
|
|
3623 | for (i = periodiccnt + HEAP0; i-- > HEAP0; ) |
|
|
3624 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
|
|
3625 | #endif |
1070 | |
3626 | |
1071 | #if 0 |
3627 | #if EV_IDLE_ENABLE |
|
|
3628 | if (types & EV_IDLE) |
|
|
3629 | for (j = NUMPRI; i--; ) |
|
|
3630 | for (i = idlecnt [j]; i--; ) |
|
|
3631 | cb (EV_A_ EV_IDLE, idles [j][i]); |
|
|
3632 | #endif |
1072 | |
3633 | |
1073 | struct ev_io wio; |
3634 | #if EV_FORK_ENABLE |
|
|
3635 | if (types & EV_FORK) |
|
|
3636 | for (i = forkcnt; i--; ) |
|
|
3637 | if (ev_cb (forks [i]) != embed_fork_cb) |
|
|
3638 | cb (EV_A_ EV_FORK, forks [i]); |
|
|
3639 | #endif |
1074 | |
3640 | |
1075 | static void |
3641 | #if EV_ASYNC_ENABLE |
1076 | sin_cb (struct ev_io *w, int revents) |
3642 | if (types & EV_ASYNC) |
1077 | { |
3643 | for (i = asynccnt; i--; ) |
1078 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
3644 | cb (EV_A_ EV_ASYNC, asyncs [i]); |
1079 | } |
3645 | #endif |
1080 | |
3646 | |
1081 | static void |
3647 | if (types & EV_PREPARE) |
1082 | ocb (struct ev_timer *w, int revents) |
3648 | for (i = preparecnt; i--; ) |
1083 | { |
3649 | #if EV_EMBED_ENABLE |
1084 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
3650 | if (ev_cb (prepares [i]) != embed_prepare_cb) |
1085 | ev_timer_stop (w); |
3651 | #endif |
1086 | ev_timer_start (w); |
3652 | cb (EV_A_ EV_PREPARE, prepares [i]); |
1087 | } |
|
|
1088 | |
3653 | |
1089 | static void |
3654 | if (types & EV_CHECK) |
1090 | scb (struct ev_signal *w, int revents) |
3655 | for (i = checkcnt; i--; ) |
1091 | { |
3656 | cb (EV_A_ EV_CHECK, checks [i]); |
1092 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
1093 | ev_io_stop (&wio); |
|
|
1094 | ev_io_start (&wio); |
|
|
1095 | } |
|
|
1096 | |
3657 | |
1097 | static void |
3658 | if (types & EV_SIGNAL) |
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) |
3659 | for (i = 0; i < EV_NSIG - 1; ++i) |
1116 | { |
3660 | for (wl = signals [i].head; wl; ) |
1117 | struct ev_timer *w = t + i; |
3661 | { |
1118 | ev_watcher_init (w, ocb, i); |
3662 | wn = wl->next; |
1119 | ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
3663 | cb (EV_A_ EV_SIGNAL, wl); |
1120 | ev_timer_start (w); |
3664 | wl = wn; |
1121 | if (drand48 () < 0.5) |
3665 | } |
1122 | ev_timer_stop (w); |
|
|
1123 | } |
|
|
1124 | #endif |
|
|
1125 | |
3666 | |
1126 | struct ev_timer t1; |
3667 | if (types & EV_CHILD) |
1127 | ev_timer_init (&t1, ocb, 5, 10); |
3668 | for (i = EV_PID_HASHSIZE; i--; ) |
1128 | ev_timer_start (&t1); |
3669 | for (wl = childs [i]; wl; ) |
1129 | |
3670 | { |
1130 | struct ev_signal sig; |
3671 | wn = wl->next; |
1131 | ev_signal_init (&sig, scb, SIGQUIT); |
3672 | cb (EV_A_ EV_CHILD, wl); |
1132 | ev_signal_start (&sig); |
3673 | wl = wn; |
1133 | |
3674 | } |
1134 | struct ev_check cw; |
3675 | /* EV_STAT 0x00001000 /* stat data changed */ |
1135 | ev_check_init (&cw, gcb); |
3676 | /* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
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 | } |
3677 | } |
1146 | |
|
|
1147 | #endif |
3678 | #endif |
1148 | |
3679 | |
|
|
3680 | #if EV_MULTIPLICITY |
|
|
3681 | #include "ev_wrap.h" |
|
|
3682 | #endif |
1149 | |
3683 | |
|
|
3684 | #ifdef __cplusplus |
|
|
3685 | } |
|
|
3686 | #endif |
1150 | |
3687 | |
1151 | |
|
|