1 | /* |
1 | /* |
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2 | * libev event processing core, watcher management |
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3 | * |
2 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de> |
3 | * All rights reserved. |
5 | * All rights reserved. |
4 | * |
6 | * |
5 | * Redistribution and use in source and binary forms, with or without |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
6 | * modification, are permitted provided that the following conditions are |
8 | * tion, are permitted provided that the following conditions are met: |
7 | * 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. |
8 | * |
27 | * |
9 | * * Redistributions of source code must retain the above copyright |
28 | * Alternatively, the contents of this file may be used under the terms of |
10 | * notice, this list of conditions and the following disclaimer. |
29 | * the GNU General Public License ("GPL") version 2 or any later version, |
11 | * |
30 | * in which case the provisions of the GPL are applicable instead of |
12 | * * Redistributions in binary form must reproduce the above |
31 | * the above. If you wish to allow the use of your version of this file |
13 | * 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 |
14 | * disclaimer in the documentation and/or other materials provided |
33 | * version of this file under the BSD license, indicate your decision |
15 | * with the distribution. |
34 | * by deleting the provisions above and replace them with the notice |
16 | * |
35 | * and other provisions required by the GPL. If you do not delete the |
17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
36 | * provisions above, a recipient may use your version of this file under |
18 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
37 | * either the BSD or the GPL. |
19 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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20 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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21 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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22 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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23 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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28 | */ |
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 |
29 | #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 |
30 | # 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_EVENTFD |
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139 | # if HAVE_EVENTFD |
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140 | # define EV_USE_EVENTFD 1 |
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141 | # else |
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142 | # define EV_USE_EVENTFD 0 |
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143 | # endif |
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144 | # endif |
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145 | |
31 | #endif |
146 | #endif |
32 | |
147 | |
33 | #include <math.h> |
148 | #include <math.h> |
34 | #include <stdlib.h> |
149 | #include <stdlib.h> |
35 | #include <unistd.h> |
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36 | #include <fcntl.h> |
150 | #include <fcntl.h> |
37 | #include <signal.h> |
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38 | #include <stddef.h> |
151 | #include <stddef.h> |
39 | |
152 | |
40 | #include <stdio.h> |
153 | #include <stdio.h> |
41 | |
154 | |
42 | #include <assert.h> |
155 | #include <assert.h> |
43 | #include <errno.h> |
156 | #include <errno.h> |
44 | #include <sys/types.h> |
157 | #include <sys/types.h> |
45 | #include <sys/wait.h> |
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46 | #include <sys/time.h> |
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47 | #include <time.h> |
158 | #include <time.h> |
48 | |
159 | |
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160 | #include <signal.h> |
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161 | |
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162 | #ifdef EV_H |
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163 | # include EV_H |
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164 | #else |
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165 | # include "ev.h" |
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166 | #endif |
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167 | |
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168 | #ifndef _WIN32 |
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169 | # include <sys/time.h> |
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170 | # include <sys/wait.h> |
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171 | # include <unistd.h> |
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172 | #else |
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173 | # include <io.h> |
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174 | # define WIN32_LEAN_AND_MEAN |
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175 | # include <windows.h> |
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176 | # ifndef EV_SELECT_IS_WINSOCKET |
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177 | # define EV_SELECT_IS_WINSOCKET 1 |
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178 | # endif |
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179 | #endif |
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180 | |
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181 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
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182 | |
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183 | #ifndef EV_USE_CLOCK_SYSCALL |
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184 | # if __linux && __GLIBC__ >= 2 |
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185 | # define EV_USE_CLOCK_SYSCALL 1 |
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186 | # else |
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187 | # define EV_USE_CLOCK_SYSCALL 0 |
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188 | # endif |
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189 | #endif |
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190 | |
49 | #ifndef EV_USE_MONOTONIC |
191 | #ifndef EV_USE_MONOTONIC |
50 | # ifdef CLOCK_MONOTONIC |
192 | # if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 |
51 | # define EV_USE_MONOTONIC 1 |
193 | # define EV_USE_MONOTONIC 1 |
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194 | # else |
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195 | # define EV_USE_MONOTONIC 0 |
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196 | # endif |
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197 | #endif |
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198 | |
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199 | #ifndef EV_USE_REALTIME |
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200 | # define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL |
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201 | #endif |
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202 | |
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203 | #ifndef EV_USE_NANOSLEEP |
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204 | # if _POSIX_C_SOURCE >= 199309L |
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205 | # define EV_USE_NANOSLEEP 1 |
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206 | # else |
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207 | # define EV_USE_NANOSLEEP 0 |
52 | # endif |
208 | # endif |
53 | #endif |
209 | #endif |
54 | |
210 | |
55 | #ifndef EV_USE_SELECT |
211 | #ifndef EV_USE_SELECT |
56 | # define EV_USE_SELECT 1 |
212 | # define EV_USE_SELECT 1 |
57 | #endif |
213 | #endif |
58 | |
214 | |
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215 | #ifndef EV_USE_POLL |
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216 | # ifdef _WIN32 |
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217 | # define EV_USE_POLL 0 |
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218 | # else |
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219 | # define EV_USE_POLL 1 |
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220 | # endif |
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221 | #endif |
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222 | |
59 | #ifndef EV_USE_EPOLL |
223 | #ifndef EV_USE_EPOLL |
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224 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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225 | # define EV_USE_EPOLL 1 |
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226 | # else |
60 | # define EV_USE_EPOLL 0 |
227 | # define EV_USE_EPOLL 0 |
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228 | # endif |
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229 | #endif |
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230 | |
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231 | #ifndef EV_USE_KQUEUE |
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232 | # define EV_USE_KQUEUE 0 |
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233 | #endif |
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234 | |
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235 | #ifndef EV_USE_PORT |
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236 | # define EV_USE_PORT 0 |
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237 | #endif |
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238 | |
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239 | #ifndef EV_USE_INOTIFY |
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240 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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241 | # define EV_USE_INOTIFY 1 |
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242 | # else |
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243 | # define EV_USE_INOTIFY 0 |
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244 | # endif |
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245 | #endif |
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246 | |
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247 | #ifndef EV_PID_HASHSIZE |
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248 | # if EV_MINIMAL |
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249 | # define EV_PID_HASHSIZE 1 |
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250 | # else |
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251 | # define EV_PID_HASHSIZE 16 |
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252 | # endif |
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253 | #endif |
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254 | |
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255 | #ifndef EV_INOTIFY_HASHSIZE |
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256 | # if EV_MINIMAL |
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257 | # define EV_INOTIFY_HASHSIZE 1 |
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258 | # else |
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259 | # define EV_INOTIFY_HASHSIZE 16 |
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260 | # endif |
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261 | #endif |
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262 | |
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263 | #ifndef EV_USE_EVENTFD |
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264 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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265 | # define EV_USE_EVENTFD 1 |
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266 | # else |
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267 | # define EV_USE_EVENTFD 0 |
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268 | # endif |
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269 | #endif |
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270 | |
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271 | #if 0 /* debugging */ |
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272 | # define EV_VERIFY 3 |
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273 | # define EV_USE_4HEAP 1 |
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274 | # define EV_HEAP_CACHE_AT 1 |
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275 | #endif |
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276 | |
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277 | #ifndef EV_VERIFY |
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278 | # define EV_VERIFY !EV_MINIMAL |
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279 | #endif |
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280 | |
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281 | #ifndef EV_USE_4HEAP |
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282 | # define EV_USE_4HEAP !EV_MINIMAL |
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283 | #endif |
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284 | |
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285 | #ifndef EV_HEAP_CACHE_AT |
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286 | # define EV_HEAP_CACHE_AT !EV_MINIMAL |
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287 | #endif |
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288 | |
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289 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
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290 | /* which makes programs even slower. might work on other unices, too. */ |
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291 | #if EV_USE_CLOCK_SYSCALL |
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292 | # include <syscall.h> |
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293 | # ifdef SYS_clock_gettime |
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294 | # define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
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295 | # undef EV_USE_MONOTONIC |
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296 | # define EV_USE_MONOTONIC 1 |
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297 | # else |
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298 | # undef EV_USE_CLOCK_SYSCALL |
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299 | # define EV_USE_CLOCK_SYSCALL 0 |
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300 | # endif |
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301 | #endif |
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302 | |
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303 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
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304 | |
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305 | #ifndef CLOCK_MONOTONIC |
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306 | # undef EV_USE_MONOTONIC |
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307 | # define EV_USE_MONOTONIC 0 |
61 | #endif |
308 | #endif |
62 | |
309 | |
63 | #ifndef CLOCK_REALTIME |
310 | #ifndef CLOCK_REALTIME |
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311 | # undef EV_USE_REALTIME |
64 | # define EV_USE_REALTIME 0 |
312 | # define EV_USE_REALTIME 0 |
65 | #endif |
313 | #endif |
66 | #ifndef EV_USE_REALTIME |
314 | |
67 | # define EV_USE_REALTIME 1 /* posix requirement, but might be slower */ |
315 | #if !EV_STAT_ENABLE |
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316 | # undef EV_USE_INOTIFY |
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317 | # define EV_USE_INOTIFY 0 |
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318 | #endif |
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319 | |
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320 | #if !EV_USE_NANOSLEEP |
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321 | # ifndef _WIN32 |
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322 | # include <sys/select.h> |
68 | #endif |
323 | # endif |
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324 | #endif |
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325 | |
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326 | #if EV_USE_INOTIFY |
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327 | # include <sys/utsname.h> |
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328 | # include <sys/statfs.h> |
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329 | # include <sys/inotify.h> |
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330 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
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331 | # ifndef IN_DONT_FOLLOW |
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332 | # undef EV_USE_INOTIFY |
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333 | # define EV_USE_INOTIFY 0 |
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334 | # endif |
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335 | #endif |
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336 | |
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337 | #if EV_SELECT_IS_WINSOCKET |
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338 | # include <winsock.h> |
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339 | #endif |
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340 | |
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341 | #if EV_USE_EVENTFD |
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342 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
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343 | # include <stdint.h> |
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344 | # ifdef __cplusplus |
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345 | extern "C" { |
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346 | # endif |
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347 | int eventfd (unsigned int initval, int flags); |
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348 | # ifdef __cplusplus |
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349 | } |
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350 | # endif |
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351 | #endif |
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352 | |
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353 | /**/ |
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354 | |
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355 | #if EV_VERIFY >= 3 |
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356 | # define EV_FREQUENT_CHECK ev_loop_verify (EV_A) |
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357 | #else |
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358 | # define EV_FREQUENT_CHECK do { } while (0) |
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359 | #endif |
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360 | |
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361 | /* |
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362 | * This is used to avoid floating point rounding problems. |
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363 | * It is added to ev_rt_now when scheduling periodics |
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364 | * to ensure progress, time-wise, even when rounding |
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365 | * errors are against us. |
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366 | * This value is good at least till the year 4000. |
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367 | * Better solutions welcome. |
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368 | */ |
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369 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
69 | |
370 | |
70 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
371 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
71 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detetc time jumps) */ |
372 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
72 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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73 | #define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ |
373 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
74 | |
374 | |
75 | #include "ev.h" |
375 | #if __GNUC__ >= 4 |
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376 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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377 | # define noinline __attribute__ ((noinline)) |
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378 | #else |
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379 | # define expect(expr,value) (expr) |
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380 | # define noinline |
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381 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
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382 | # define inline |
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383 | # endif |
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384 | #endif |
76 | |
385 | |
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386 | #define expect_false(expr) expect ((expr) != 0, 0) |
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387 | #define expect_true(expr) expect ((expr) != 0, 1) |
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388 | #define inline_size static inline |
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389 | |
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390 | #if EV_MINIMAL |
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391 | # define inline_speed static noinline |
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392 | #else |
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393 | # define inline_speed static inline |
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394 | #endif |
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395 | |
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396 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
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397 | #define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
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398 | |
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399 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
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400 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
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401 | |
77 | typedef struct ev_watcher *W; |
402 | typedef ev_watcher *W; |
78 | typedef struct ev_watcher_list *WL; |
403 | typedef ev_watcher_list *WL; |
79 | typedef struct ev_watcher_time *WT; |
404 | typedef ev_watcher_time *WT; |
80 | |
405 | |
81 | static ev_tstamp now, diff; /* monotonic clock */ |
406 | #define ev_active(w) ((W)(w))->active |
82 | ev_tstamp ev_now; |
407 | #define ev_at(w) ((WT)(w))->at |
83 | int ev_method; |
|
|
84 | |
408 | |
85 | static int have_monotonic; /* runtime */ |
409 | #if EV_USE_REALTIME |
|
|
410 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
|
|
411 | /* giving it a reasonably high chance of working on typical architetcures */ |
|
|
412 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
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|
413 | #endif |
86 | |
414 | |
87 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
415 | #if EV_USE_MONOTONIC |
88 | static void (*method_modify)(int fd, int oev, int nev); |
416 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
89 | static void (*method_poll)(ev_tstamp timeout); |
417 | #endif |
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|
418 | |
|
|
419 | #ifdef _WIN32 |
|
|
420 | # include "ev_win32.c" |
|
|
421 | #endif |
90 | |
422 | |
91 | /*****************************************************************************/ |
423 | /*****************************************************************************/ |
92 | |
424 | |
|
|
425 | static void (*syserr_cb)(const char *msg); |
|
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426 | |
|
|
427 | void |
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428 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
|
|
429 | { |
|
|
430 | syserr_cb = cb; |
|
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431 | } |
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432 | |
|
|
433 | static void noinline |
|
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434 | ev_syserr (const char *msg) |
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435 | { |
|
|
436 | if (!msg) |
|
|
437 | msg = "(libev) system error"; |
|
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438 | |
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439 | if (syserr_cb) |
|
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440 | syserr_cb (msg); |
|
|
441 | else |
|
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442 | { |
|
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443 | perror (msg); |
|
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444 | abort (); |
|
|
445 | } |
|
|
446 | } |
|
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447 | |
|
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448 | static void * |
|
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449 | ev_realloc_emul (void *ptr, long size) |
|
|
450 | { |
|
|
451 | /* some systems, notably openbsd and darwin, fail to properly |
|
|
452 | * implement realloc (x, 0) (as required by both ansi c-98 and |
|
|
453 | * the single unix specification, so work around them here. |
|
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454 | */ |
|
|
455 | |
|
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456 | if (size) |
|
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457 | return realloc (ptr, size); |
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458 | |
|
|
459 | free (ptr); |
|
|
460 | return 0; |
|
|
461 | } |
|
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462 | |
|
|
463 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
|
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464 | |
|
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465 | void |
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466 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
|
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467 | { |
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468 | alloc = cb; |
|
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469 | } |
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|
470 | |
|
|
471 | inline_speed void * |
|
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472 | ev_realloc (void *ptr, long size) |
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473 | { |
|
|
474 | ptr = alloc (ptr, size); |
|
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475 | |
|
|
476 | if (!ptr && size) |
|
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477 | { |
|
|
478 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
|
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479 | abort (); |
|
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480 | } |
|
|
481 | |
|
|
482 | return ptr; |
|
|
483 | } |
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484 | |
|
|
485 | #define ev_malloc(size) ev_realloc (0, (size)) |
|
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486 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
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487 | |
|
|
488 | /*****************************************************************************/ |
|
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489 | |
|
|
490 | /* file descriptor info structure */ |
|
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491 | typedef struct |
|
|
492 | { |
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|
493 | WL head; |
|
|
494 | unsigned char events; /* the events watched for */ |
|
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495 | unsigned char reify; /* flag set when this ANFD needs reification */ |
|
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496 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
|
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497 | unsigned char unused; |
|
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498 | #if EV_USE_EPOLL |
|
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499 | unsigned int egen; /* generation counter to counter epoll bugs */ |
|
|
500 | #endif |
|
|
501 | #if EV_SELECT_IS_WINSOCKET |
|
|
502 | SOCKET handle; |
|
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503 | #endif |
|
|
504 | } ANFD; |
|
|
505 | |
|
|
506 | /* stores the pending event set for a given watcher */ |
|
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507 | typedef struct |
|
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508 | { |
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509 | W w; |
|
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510 | int events; /* the pending event set for the given watcher */ |
|
|
511 | } ANPENDING; |
|
|
512 | |
|
|
513 | #if EV_USE_INOTIFY |
|
|
514 | /* hash table entry per inotify-id */ |
|
|
515 | typedef struct |
|
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516 | { |
|
|
517 | WL head; |
|
|
518 | } ANFS; |
|
|
519 | #endif |
|
|
520 | |
|
|
521 | /* Heap Entry */ |
|
|
522 | #if EV_HEAP_CACHE_AT |
|
|
523 | /* a heap element */ |
|
|
524 | typedef struct { |
|
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525 | ev_tstamp at; |
|
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526 | WT w; |
|
|
527 | } ANHE; |
|
|
528 | |
|
|
529 | #define ANHE_w(he) (he).w /* access watcher, read-write */ |
|
|
530 | #define ANHE_at(he) (he).at /* access cached at, read-only */ |
|
|
531 | #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ |
|
|
532 | #else |
|
|
533 | /* a heap element */ |
|
|
534 | typedef WT ANHE; |
|
|
535 | |
|
|
536 | #define ANHE_w(he) (he) |
|
|
537 | #define ANHE_at(he) (he)->at |
|
|
538 | #define ANHE_at_cache(he) |
|
|
539 | #endif |
|
|
540 | |
|
|
541 | #if EV_MULTIPLICITY |
|
|
542 | |
|
|
543 | struct ev_loop |
|
|
544 | { |
|
|
545 | ev_tstamp ev_rt_now; |
|
|
546 | #define ev_rt_now ((loop)->ev_rt_now) |
|
|
547 | #define VAR(name,decl) decl; |
|
|
548 | #include "ev_vars.h" |
|
|
549 | #undef VAR |
|
|
550 | }; |
|
|
551 | #include "ev_wrap.h" |
|
|
552 | |
|
|
553 | static struct ev_loop default_loop_struct; |
|
|
554 | struct ev_loop *ev_default_loop_ptr; |
|
|
555 | |
|
|
556 | #else |
|
|
557 | |
|
|
558 | ev_tstamp ev_rt_now; |
|
|
559 | #define VAR(name,decl) static decl; |
|
|
560 | #include "ev_vars.h" |
|
|
561 | #undef VAR |
|
|
562 | |
|
|
563 | static int ev_default_loop_ptr; |
|
|
564 | |
|
|
565 | #endif |
|
|
566 | |
|
|
567 | /*****************************************************************************/ |
|
|
568 | |
|
|
569 | #ifndef EV_HAVE_EV_TIME |
93 | ev_tstamp |
570 | ev_tstamp |
94 | ev_time (void) |
571 | ev_time (void) |
95 | { |
572 | { |
96 | #if EV_USE_REALTIME |
573 | #if EV_USE_REALTIME |
|
|
574 | if (expect_true (have_realtime)) |
|
|
575 | { |
97 | struct timespec ts; |
576 | struct timespec ts; |
98 | clock_gettime (CLOCK_REALTIME, &ts); |
577 | clock_gettime (CLOCK_REALTIME, &ts); |
99 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
578 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
100 | #else |
579 | } |
|
|
580 | #endif |
|
|
581 | |
101 | struct timeval tv; |
582 | struct timeval tv; |
102 | gettimeofday (&tv, 0); |
583 | gettimeofday (&tv, 0); |
103 | return tv.tv_sec + tv.tv_usec * 1e-6; |
584 | return tv.tv_sec + tv.tv_usec * 1e-6; |
104 | #endif |
|
|
105 | } |
585 | } |
|
|
586 | #endif |
106 | |
587 | |
107 | static ev_tstamp |
588 | inline_size ev_tstamp |
108 | get_clock (void) |
589 | get_clock (void) |
109 | { |
590 | { |
110 | #if EV_USE_MONOTONIC |
591 | #if EV_USE_MONOTONIC |
111 | if (have_monotonic) |
592 | if (expect_true (have_monotonic)) |
112 | { |
593 | { |
113 | struct timespec ts; |
594 | struct timespec ts; |
114 | clock_gettime (CLOCK_MONOTONIC, &ts); |
595 | clock_gettime (CLOCK_MONOTONIC, &ts); |
115 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
596 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
116 | } |
597 | } |
117 | #endif |
598 | #endif |
118 | |
599 | |
119 | return ev_time (); |
600 | return ev_time (); |
120 | } |
601 | } |
121 | |
602 | |
122 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
603 | #if EV_MULTIPLICITY |
|
|
604 | ev_tstamp |
|
|
605 | ev_now (EV_P) |
|
|
606 | { |
|
|
607 | return ev_rt_now; |
|
|
608 | } |
|
|
609 | #endif |
123 | |
610 | |
124 | #define array_needsize(base,cur,cnt,init) \ |
611 | void |
125 | if ((cnt) > cur) \ |
612 | ev_sleep (ev_tstamp delay) |
126 | { \ |
613 | { |
127 | int newcnt = cur; \ |
614 | if (delay > 0.) |
128 | do \ |
|
|
129 | { \ |
|
|
130 | newcnt = array_roundsize (base, newcnt << 1); \ |
|
|
131 | } \ |
|
|
132 | while ((cnt) > newcnt); \ |
|
|
133 | \ |
|
|
134 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
|
|
135 | init (base + cur, newcnt - cur); \ |
|
|
136 | cur = newcnt; \ |
|
|
137 | } |
615 | { |
|
|
616 | #if EV_USE_NANOSLEEP |
|
|
617 | struct timespec ts; |
|
|
618 | |
|
|
619 | ts.tv_sec = (time_t)delay; |
|
|
620 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
|
|
621 | |
|
|
622 | nanosleep (&ts, 0); |
|
|
623 | #elif defined(_WIN32) |
|
|
624 | Sleep ((unsigned long)(delay * 1e3)); |
|
|
625 | #else |
|
|
626 | struct timeval tv; |
|
|
627 | |
|
|
628 | tv.tv_sec = (time_t)delay; |
|
|
629 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
|
|
630 | |
|
|
631 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
|
|
632 | /* somehting nto guaranteed by newer posix versions, but guaranteed */ |
|
|
633 | /* by older ones */ |
|
|
634 | select (0, 0, 0, 0, &tv); |
|
|
635 | #endif |
|
|
636 | } |
|
|
637 | } |
138 | |
638 | |
139 | /*****************************************************************************/ |
639 | /*****************************************************************************/ |
140 | |
640 | |
141 | typedef struct |
641 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
142 | { |
|
|
143 | struct ev_io *head; |
|
|
144 | unsigned char events; |
|
|
145 | unsigned char reify; |
|
|
146 | } ANFD; |
|
|
147 | |
642 | |
148 | static ANFD *anfds; |
643 | /* find a suitable new size for the given array, */ |
149 | static int anfdmax; |
644 | /* hopefully by rounding to a ncie-to-malloc size */ |
150 | |
645 | inline_size int |
151 | static void |
646 | array_nextsize (int elem, int cur, int cnt) |
152 | anfds_init (ANFD *base, int count) |
|
|
153 | { |
647 | { |
154 | while (count--) |
648 | int ncur = cur + 1; |
155 | { |
|
|
156 | base->head = 0; |
|
|
157 | base->events = EV_NONE; |
|
|
158 | base->reify = 0; |
|
|
159 | |
649 | |
160 | ++base; |
650 | do |
|
|
651 | ncur <<= 1; |
|
|
652 | while (cnt > ncur); |
|
|
653 | |
|
|
654 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ |
|
|
655 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
161 | } |
656 | { |
162 | } |
657 | ncur *= elem; |
163 | |
658 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
164 | typedef struct |
659 | ncur = ncur - sizeof (void *) * 4; |
165 | { |
660 | ncur /= elem; |
166 | W w; |
|
|
167 | int events; |
|
|
168 | } ANPENDING; |
|
|
169 | |
|
|
170 | static ANPENDING *pendings; |
|
|
171 | static int pendingmax, pendingcnt; |
|
|
172 | |
|
|
173 | static void |
|
|
174 | event (W w, int events) |
|
|
175 | { |
|
|
176 | if (w->pending) |
|
|
177 | { |
661 | } |
|
|
662 | |
|
|
663 | return ncur; |
|
|
664 | } |
|
|
665 | |
|
|
666 | static noinline void * |
|
|
667 | array_realloc (int elem, void *base, int *cur, int cnt) |
|
|
668 | { |
|
|
669 | *cur = array_nextsize (elem, *cur, cnt); |
|
|
670 | return ev_realloc (base, elem * *cur); |
|
|
671 | } |
|
|
672 | |
|
|
673 | #define array_init_zero(base,count) \ |
|
|
674 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
|
|
675 | |
|
|
676 | #define array_needsize(type,base,cur,cnt,init) \ |
|
|
677 | if (expect_false ((cnt) > (cur))) \ |
|
|
678 | { \ |
|
|
679 | int ocur_ = (cur); \ |
|
|
680 | (base) = (type *)array_realloc \ |
|
|
681 | (sizeof (type), (base), &(cur), (cnt)); \ |
|
|
682 | init ((base) + (ocur_), (cur) - ocur_); \ |
|
|
683 | } |
|
|
684 | |
|
|
685 | #if 0 |
|
|
686 | #define array_slim(type,stem) \ |
|
|
687 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
|
|
688 | { \ |
|
|
689 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
|
|
690 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
|
|
691 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
|
|
692 | } |
|
|
693 | #endif |
|
|
694 | |
|
|
695 | #define array_free(stem, idx) \ |
|
|
696 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 |
|
|
697 | |
|
|
698 | /*****************************************************************************/ |
|
|
699 | |
|
|
700 | /* dummy callback for pending events */ |
|
|
701 | static void noinline |
|
|
702 | pendingcb (EV_P_ ev_prepare *w, int revents) |
|
|
703 | { |
|
|
704 | } |
|
|
705 | |
|
|
706 | void noinline |
|
|
707 | ev_feed_event (EV_P_ void *w, int revents) |
|
|
708 | { |
|
|
709 | W w_ = (W)w; |
|
|
710 | int pri = ABSPRI (w_); |
|
|
711 | |
|
|
712 | if (expect_false (w_->pending)) |
|
|
713 | pendings [pri][w_->pending - 1].events |= revents; |
|
|
714 | else |
|
|
715 | { |
|
|
716 | w_->pending = ++pendingcnt [pri]; |
|
|
717 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
|
|
718 | pendings [pri][w_->pending - 1].w = w_; |
178 | pendings [w->pending - 1].events |= events; |
719 | pendings [pri][w_->pending - 1].events = revents; |
179 | return; |
|
|
180 | } |
720 | } |
181 | |
|
|
182 | w->pending = ++pendingcnt; |
|
|
183 | array_needsize (pendings, pendingmax, pendingcnt, ); |
|
|
184 | pendings [pendingcnt - 1].w = w; |
|
|
185 | pendings [pendingcnt - 1].events = events; |
|
|
186 | } |
721 | } |
187 | |
722 | |
188 | static void |
723 | inline_speed void |
|
|
724 | feed_reverse (EV_P_ W w) |
|
|
725 | { |
|
|
726 | array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); |
|
|
727 | rfeeds [rfeedcnt++] = w; |
|
|
728 | } |
|
|
729 | |
|
|
730 | inline_size void |
|
|
731 | feed_reverse_done (EV_P_ int revents) |
|
|
732 | { |
|
|
733 | do |
|
|
734 | ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents); |
|
|
735 | while (rfeedcnt); |
|
|
736 | } |
|
|
737 | |
|
|
738 | inline_speed void |
189 | queue_events (W *events, int eventcnt, int type) |
739 | queue_events (EV_P_ W *events, int eventcnt, int type) |
190 | { |
740 | { |
191 | int i; |
741 | int i; |
192 | |
742 | |
193 | for (i = 0; i < eventcnt; ++i) |
743 | for (i = 0; i < eventcnt; ++i) |
194 | event (events [i], type); |
744 | ev_feed_event (EV_A_ events [i], type); |
195 | } |
745 | } |
196 | |
746 | |
197 | static void |
747 | /*****************************************************************************/ |
|
|
748 | |
|
|
749 | inline_speed void |
198 | fd_event (int fd, int events) |
750 | fd_event (EV_P_ int fd, int revents) |
199 | { |
751 | { |
200 | ANFD *anfd = anfds + fd; |
752 | ANFD *anfd = anfds + fd; |
201 | struct ev_io *w; |
753 | ev_io *w; |
202 | |
754 | |
203 | for (w = anfd->head; w; w = w->next) |
755 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
204 | { |
756 | { |
205 | int ev = w->events & events; |
757 | int ev = w->events & revents; |
206 | |
758 | |
207 | if (ev) |
759 | if (ev) |
208 | event ((W)w, ev); |
760 | ev_feed_event (EV_A_ (W)w, ev); |
209 | } |
761 | } |
210 | } |
762 | } |
211 | |
763 | |
212 | /*****************************************************************************/ |
764 | void |
|
|
765 | ev_feed_fd_event (EV_P_ int fd, int revents) |
|
|
766 | { |
|
|
767 | if (fd >= 0 && fd < anfdmax) |
|
|
768 | fd_event (EV_A_ fd, revents); |
|
|
769 | } |
213 | |
770 | |
214 | static int *fdchanges; |
771 | /* make sure the external fd watch events are in-sync */ |
215 | static int fdchangemax, fdchangecnt; |
772 | /* with the kernel/libev internal state */ |
216 | |
773 | inline_size void |
217 | static void |
774 | fd_reify (EV_P) |
218 | fd_reify (void) |
|
|
219 | { |
775 | { |
220 | int i; |
776 | int i; |
221 | |
777 | |
222 | for (i = 0; i < fdchangecnt; ++i) |
778 | for (i = 0; i < fdchangecnt; ++i) |
223 | { |
779 | { |
224 | int fd = fdchanges [i]; |
780 | int fd = fdchanges [i]; |
225 | ANFD *anfd = anfds + fd; |
781 | ANFD *anfd = anfds + fd; |
226 | struct ev_io *w; |
782 | ev_io *w; |
227 | |
783 | |
228 | int events = 0; |
784 | unsigned char events = 0; |
229 | |
785 | |
230 | for (w = anfd->head; w; w = w->next) |
786 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
231 | events |= w->events; |
787 | events |= (unsigned char)w->events; |
232 | |
788 | |
233 | anfd->reify = 0; |
789 | #if EV_SELECT_IS_WINSOCKET |
234 | |
790 | if (events) |
235 | if (anfd->events != events) |
|
|
236 | { |
791 | { |
237 | method_modify (fd, anfd->events, events); |
792 | unsigned long arg; |
238 | anfd->events = events; |
793 | #ifdef EV_FD_TO_WIN32_HANDLE |
|
|
794 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
795 | #else |
|
|
796 | anfd->handle = _get_osfhandle (fd); |
|
|
797 | #endif |
|
|
798 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0)); |
239 | } |
799 | } |
|
|
800 | #endif |
|
|
801 | |
|
|
802 | { |
|
|
803 | unsigned char o_events = anfd->events; |
|
|
804 | unsigned char o_reify = anfd->reify; |
|
|
805 | |
|
|
806 | anfd->reify = 0; |
|
|
807 | anfd->events = events; |
|
|
808 | |
|
|
809 | if (o_events != events || o_reify & EV__IOFDSET) |
|
|
810 | backend_modify (EV_A_ fd, o_events, events); |
|
|
811 | } |
240 | } |
812 | } |
241 | |
813 | |
242 | fdchangecnt = 0; |
814 | fdchangecnt = 0; |
243 | } |
815 | } |
244 | |
816 | |
245 | static void |
817 | /* something about the given fd changed */ |
246 | fd_change (int fd) |
818 | inline_size void |
|
|
819 | fd_change (EV_P_ int fd, int flags) |
247 | { |
820 | { |
248 | if (anfds [fd].reify || fdchangecnt < 0) |
821 | unsigned char reify = anfds [fd].reify; |
249 | return; |
|
|
250 | |
|
|
251 | anfds [fd].reify = 1; |
822 | anfds [fd].reify |= flags; |
252 | |
823 | |
|
|
824 | if (expect_true (!reify)) |
|
|
825 | { |
253 | ++fdchangecnt; |
826 | ++fdchangecnt; |
254 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
827 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
255 | fdchanges [fdchangecnt - 1] = fd; |
828 | fdchanges [fdchangecnt - 1] = fd; |
|
|
829 | } |
|
|
830 | } |
|
|
831 | |
|
|
832 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
|
|
833 | inline_speed void |
|
|
834 | fd_kill (EV_P_ int fd) |
|
|
835 | { |
|
|
836 | ev_io *w; |
|
|
837 | |
|
|
838 | while ((w = (ev_io *)anfds [fd].head)) |
|
|
839 | { |
|
|
840 | ev_io_stop (EV_A_ w); |
|
|
841 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
842 | } |
|
|
843 | } |
|
|
844 | |
|
|
845 | /* check whether the given fd is atcually valid, for error recovery */ |
|
|
846 | inline_size int |
|
|
847 | fd_valid (int fd) |
|
|
848 | { |
|
|
849 | #ifdef _WIN32 |
|
|
850 | return _get_osfhandle (fd) != -1; |
|
|
851 | #else |
|
|
852 | return fcntl (fd, F_GETFD) != -1; |
|
|
853 | #endif |
256 | } |
854 | } |
257 | |
855 | |
258 | /* called on EBADF to verify fds */ |
856 | /* called on EBADF to verify fds */ |
259 | static void |
857 | static void noinline |
260 | fd_recheck (void) |
858 | fd_ebadf (EV_P) |
261 | { |
859 | { |
262 | int fd; |
860 | int fd; |
263 | |
861 | |
264 | for (fd = 0; fd < anfdmax; ++fd) |
862 | for (fd = 0; fd < anfdmax; ++fd) |
265 | if (anfds [fd].events) |
863 | if (anfds [fd].events) |
266 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
864 | if (!fd_valid (fd) && errno == EBADF) |
267 | while (anfds [fd].head) |
865 | fd_kill (EV_A_ fd); |
|
|
866 | } |
|
|
867 | |
|
|
868 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
869 | static void noinline |
|
|
870 | fd_enomem (EV_P) |
|
|
871 | { |
|
|
872 | int fd; |
|
|
873 | |
|
|
874 | for (fd = anfdmax; fd--; ) |
|
|
875 | if (anfds [fd].events) |
268 | { |
876 | { |
269 | ev_io_stop (anfds [fd].head); |
877 | fd_kill (EV_A_ fd); |
270 | event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE); |
878 | return; |
271 | } |
879 | } |
|
|
880 | } |
|
|
881 | |
|
|
882 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
|
|
883 | static void noinline |
|
|
884 | fd_rearm_all (EV_P) |
|
|
885 | { |
|
|
886 | int fd; |
|
|
887 | |
|
|
888 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
889 | if (anfds [fd].events) |
|
|
890 | { |
|
|
891 | anfds [fd].events = 0; |
|
|
892 | anfds [fd].emask = 0; |
|
|
893 | fd_change (EV_A_ fd, EV__IOFDSET | 1); |
|
|
894 | } |
272 | } |
895 | } |
273 | |
896 | |
274 | /*****************************************************************************/ |
897 | /*****************************************************************************/ |
275 | |
898 | |
276 | static struct ev_timer **timers; |
899 | /* |
277 | static int timermax, timercnt; |
900 | * the heap functions want a real array index. array index 0 uis guaranteed to not |
|
|
901 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
|
|
902 | * the branching factor of the d-tree. |
|
|
903 | */ |
278 | |
904 | |
279 | static struct ev_periodic **periodics; |
905 | /* |
280 | static int periodicmax, periodiccnt; |
906 | * at the moment we allow libev the luxury of two heaps, |
|
|
907 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
|
|
908 | * which is more cache-efficient. |
|
|
909 | * the difference is about 5% with 50000+ watchers. |
|
|
910 | */ |
|
|
911 | #if EV_USE_4HEAP |
281 | |
912 | |
282 | static void |
913 | #define DHEAP 4 |
283 | upheap (WT *timers, int k) |
914 | #define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
284 | { |
915 | #define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) |
285 | WT w = timers [k]; |
916 | #define UPHEAP_DONE(p,k) ((p) == (k)) |
286 | |
917 | |
287 | while (k && timers [k >> 1]->at > w->at) |
918 | /* away from the root */ |
288 | { |
919 | inline_speed void |
289 | timers [k] = timers [k >> 1]; |
|
|
290 | timers [k]->active = k + 1; |
|
|
291 | k >>= 1; |
|
|
292 | } |
|
|
293 | |
|
|
294 | timers [k] = w; |
|
|
295 | timers [k]->active = k + 1; |
|
|
296 | |
|
|
297 | } |
|
|
298 | |
|
|
299 | static void |
|
|
300 | downheap (WT *timers, int N, int k) |
920 | downheap (ANHE *heap, int N, int k) |
301 | { |
921 | { |
302 | WT w = timers [k]; |
922 | ANHE he = heap [k]; |
|
|
923 | ANHE *E = heap + N + HEAP0; |
303 | |
924 | |
304 | while (k < (N >> 1)) |
925 | for (;;) |
305 | { |
926 | { |
306 | int j = k << 1; |
927 | ev_tstamp minat; |
|
|
928 | ANHE *minpos; |
|
|
929 | ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; |
307 | |
930 | |
308 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
931 | /* find minimum child */ |
|
|
932 | if (expect_true (pos + DHEAP - 1 < E)) |
309 | ++j; |
933 | { |
310 | |
934 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
311 | if (w->at <= timers [j]->at) |
935 | if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
936 | if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
937 | if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
938 | } |
|
|
939 | else if (pos < E) |
|
|
940 | { |
|
|
941 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
942 | if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
943 | if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
944 | if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
945 | } |
|
|
946 | else |
312 | break; |
947 | break; |
313 | |
948 | |
314 | timers [k] = timers [j]; |
949 | if (ANHE_at (he) <= minat) |
315 | timers [k]->active = k + 1; |
950 | break; |
|
|
951 | |
|
|
952 | heap [k] = *minpos; |
|
|
953 | ev_active (ANHE_w (*minpos)) = k; |
|
|
954 | |
|
|
955 | k = minpos - heap; |
|
|
956 | } |
|
|
957 | |
|
|
958 | heap [k] = he; |
|
|
959 | ev_active (ANHE_w (he)) = k; |
|
|
960 | } |
|
|
961 | |
|
|
962 | #else /* 4HEAP */ |
|
|
963 | |
|
|
964 | #define HEAP0 1 |
|
|
965 | #define HPARENT(k) ((k) >> 1) |
|
|
966 | #define UPHEAP_DONE(p,k) (!(p)) |
|
|
967 | |
|
|
968 | /* away from the root */ |
|
|
969 | inline_speed void |
|
|
970 | downheap (ANHE *heap, int N, int k) |
|
|
971 | { |
|
|
972 | ANHE he = heap [k]; |
|
|
973 | |
|
|
974 | for (;;) |
|
|
975 | { |
|
|
976 | int c = k << 1; |
|
|
977 | |
|
|
978 | if (c > N + HEAP0 - 1) |
|
|
979 | break; |
|
|
980 | |
|
|
981 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
|
|
982 | ? 1 : 0; |
|
|
983 | |
|
|
984 | if (ANHE_at (he) <= ANHE_at (heap [c])) |
|
|
985 | break; |
|
|
986 | |
|
|
987 | heap [k] = heap [c]; |
|
|
988 | ev_active (ANHE_w (heap [k])) = k; |
|
|
989 | |
316 | k = j; |
990 | k = c; |
|
|
991 | } |
|
|
992 | |
|
|
993 | heap [k] = he; |
|
|
994 | ev_active (ANHE_w (he)) = k; |
|
|
995 | } |
|
|
996 | #endif |
|
|
997 | |
|
|
998 | /* towards the root */ |
|
|
999 | inline_speed void |
|
|
1000 | upheap (ANHE *heap, int k) |
|
|
1001 | { |
|
|
1002 | ANHE he = heap [k]; |
|
|
1003 | |
|
|
1004 | for (;;) |
317 | } |
1005 | { |
|
|
1006 | int p = HPARENT (k); |
318 | |
1007 | |
319 | timers [k] = w; |
1008 | if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he)) |
320 | timers [k]->active = k + 1; |
1009 | break; |
|
|
1010 | |
|
|
1011 | heap [k] = heap [p]; |
|
|
1012 | ev_active (ANHE_w (heap [k])) = k; |
|
|
1013 | k = p; |
|
|
1014 | } |
|
|
1015 | |
|
|
1016 | heap [k] = he; |
|
|
1017 | ev_active (ANHE_w (he)) = k; |
|
|
1018 | } |
|
|
1019 | |
|
|
1020 | /* move an element suitably so it is in a correct place */ |
|
|
1021 | inline_size void |
|
|
1022 | adjustheap (ANHE *heap, int N, int k) |
|
|
1023 | { |
|
|
1024 | if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) |
|
|
1025 | upheap (heap, k); |
|
|
1026 | else |
|
|
1027 | downheap (heap, N, k); |
|
|
1028 | } |
|
|
1029 | |
|
|
1030 | /* rebuild the heap: this function is used only once and executed rarely */ |
|
|
1031 | inline_size void |
|
|
1032 | reheap (ANHE *heap, int N) |
|
|
1033 | { |
|
|
1034 | int i; |
|
|
1035 | |
|
|
1036 | /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ |
|
|
1037 | /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ |
|
|
1038 | for (i = 0; i < N; ++i) |
|
|
1039 | upheap (heap, i + HEAP0); |
321 | } |
1040 | } |
322 | |
1041 | |
323 | /*****************************************************************************/ |
1042 | /*****************************************************************************/ |
324 | |
1043 | |
|
|
1044 | /* associate signal watchers to a signal signal */ |
325 | typedef struct |
1045 | typedef struct |
326 | { |
1046 | { |
327 | struct ev_signal *head; |
1047 | WL head; |
328 | sig_atomic_t volatile gotsig; |
1048 | EV_ATOMIC_T gotsig; |
329 | } ANSIG; |
1049 | } ANSIG; |
330 | |
1050 | |
331 | static ANSIG *signals; |
1051 | static ANSIG *signals; |
332 | static int signalmax; |
1052 | static int signalmax; |
333 | |
1053 | |
334 | static int sigpipe [2]; |
1054 | static EV_ATOMIC_T gotsig; |
335 | static sig_atomic_t volatile gotsig; |
|
|
336 | static struct ev_io sigev; |
|
|
337 | |
1055 | |
|
|
1056 | /*****************************************************************************/ |
|
|
1057 | |
|
|
1058 | /* used to prepare libev internal fd's */ |
|
|
1059 | /* this is not fork-safe */ |
|
|
1060 | inline_speed void |
|
|
1061 | fd_intern (int fd) |
|
|
1062 | { |
|
|
1063 | #ifdef _WIN32 |
|
|
1064 | unsigned long arg = 1; |
|
|
1065 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
1066 | #else |
|
|
1067 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
1068 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
1069 | #endif |
|
|
1070 | } |
|
|
1071 | |
|
|
1072 | static void noinline |
|
|
1073 | evpipe_init (EV_P) |
|
|
1074 | { |
|
|
1075 | if (!ev_is_active (&pipe_w)) |
|
|
1076 | { |
|
|
1077 | #if EV_USE_EVENTFD |
|
|
1078 | if ((evfd = eventfd (0, 0)) >= 0) |
|
|
1079 | { |
|
|
1080 | evpipe [0] = -1; |
|
|
1081 | fd_intern (evfd); |
|
|
1082 | ev_io_set (&pipe_w, evfd, EV_READ); |
|
|
1083 | } |
|
|
1084 | else |
|
|
1085 | #endif |
|
|
1086 | { |
|
|
1087 | while (pipe (evpipe)) |
|
|
1088 | ev_syserr ("(libev) error creating signal/async pipe"); |
|
|
1089 | |
|
|
1090 | fd_intern (evpipe [0]); |
|
|
1091 | fd_intern (evpipe [1]); |
|
|
1092 | ev_io_set (&pipe_w, evpipe [0], EV_READ); |
|
|
1093 | } |
|
|
1094 | |
|
|
1095 | ev_io_start (EV_A_ &pipe_w); |
|
|
1096 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
1097 | } |
|
|
1098 | } |
|
|
1099 | |
|
|
1100 | inline_size void |
|
|
1101 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
1102 | { |
|
|
1103 | if (!*flag) |
|
|
1104 | { |
|
|
1105 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
1106 | |
|
|
1107 | *flag = 1; |
|
|
1108 | |
|
|
1109 | #if EV_USE_EVENTFD |
|
|
1110 | if (evfd >= 0) |
|
|
1111 | { |
|
|
1112 | uint64_t counter = 1; |
|
|
1113 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
1114 | } |
|
|
1115 | else |
|
|
1116 | #endif |
|
|
1117 | write (evpipe [1], &old_errno, 1); |
|
|
1118 | |
|
|
1119 | errno = old_errno; |
|
|
1120 | } |
|
|
1121 | } |
|
|
1122 | |
|
|
1123 | /* called whenever the libev signal pipe */ |
|
|
1124 | /* got some events (signal, async) */ |
338 | static void |
1125 | static void |
339 | signals_init (ANSIG *base, int count) |
1126 | pipecb (EV_P_ ev_io *iow, int revents) |
340 | { |
1127 | { |
341 | while (count--) |
1128 | #if EV_USE_EVENTFD |
|
|
1129 | if (evfd >= 0) |
|
|
1130 | { |
|
|
1131 | uint64_t counter; |
|
|
1132 | read (evfd, &counter, sizeof (uint64_t)); |
342 | { |
1133 | } |
343 | base->head = 0; |
1134 | else |
|
|
1135 | #endif |
|
|
1136 | { |
|
|
1137 | char dummy; |
|
|
1138 | read (evpipe [0], &dummy, 1); |
|
|
1139 | } |
|
|
1140 | |
|
|
1141 | if (gotsig && ev_is_default_loop (EV_A)) |
|
|
1142 | { |
|
|
1143 | int signum; |
344 | base->gotsig = 0; |
1144 | gotsig = 0; |
345 | |
1145 | |
346 | ++base; |
1146 | for (signum = signalmax; signum--; ) |
|
|
1147 | if (signals [signum].gotsig) |
|
|
1148 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
1149 | } |
|
|
1150 | |
|
|
1151 | #if EV_ASYNC_ENABLE |
|
|
1152 | if (gotasync) |
347 | } |
1153 | { |
|
|
1154 | int i; |
|
|
1155 | gotasync = 0; |
|
|
1156 | |
|
|
1157 | for (i = asynccnt; i--; ) |
|
|
1158 | if (asyncs [i]->sent) |
|
|
1159 | { |
|
|
1160 | asyncs [i]->sent = 0; |
|
|
1161 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
1162 | } |
|
|
1163 | } |
|
|
1164 | #endif |
348 | } |
1165 | } |
|
|
1166 | |
|
|
1167 | /*****************************************************************************/ |
349 | |
1168 | |
350 | static void |
1169 | static void |
351 | sighandler (int signum) |
1170 | ev_sighandler (int signum) |
352 | { |
1171 | { |
|
|
1172 | #if EV_MULTIPLICITY |
|
|
1173 | struct ev_loop *loop = &default_loop_struct; |
|
|
1174 | #endif |
|
|
1175 | |
|
|
1176 | #if _WIN32 |
|
|
1177 | signal (signum, ev_sighandler); |
|
|
1178 | #endif |
|
|
1179 | |
353 | signals [signum - 1].gotsig = 1; |
1180 | signals [signum - 1].gotsig = 1; |
354 | |
1181 | evpipe_write (EV_A_ &gotsig); |
355 | if (!gotsig) |
|
|
356 | { |
|
|
357 | gotsig = 1; |
|
|
358 | write (sigpipe [1], &signum, 1); |
|
|
359 | } |
|
|
360 | } |
1182 | } |
361 | |
1183 | |
362 | static void |
1184 | void noinline |
363 | sigcb (struct ev_io *iow, int revents) |
1185 | ev_feed_signal_event (EV_P_ int signum) |
364 | { |
1186 | { |
365 | struct ev_signal *w; |
1187 | WL w; |
366 | int sig; |
|
|
367 | |
1188 | |
368 | read (sigpipe [0], &revents, 1); |
1189 | #if EV_MULTIPLICITY |
369 | gotsig = 0; |
1190 | assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1191 | #endif |
370 | |
1192 | |
371 | for (sig = signalmax; sig--; ) |
1193 | --signum; |
372 | if (signals [sig].gotsig) |
1194 | |
373 | { |
1195 | if (signum < 0 || signum >= signalmax) |
|
|
1196 | return; |
|
|
1197 | |
374 | signals [sig].gotsig = 0; |
1198 | signals [signum].gotsig = 0; |
375 | |
1199 | |
376 | for (w = signals [sig].head; w; w = w->next) |
1200 | for (w = signals [signum].head; w; w = w->next) |
377 | event ((W)w, EV_SIGNAL); |
1201 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
378 | } |
|
|
379 | } |
|
|
380 | |
|
|
381 | static void |
|
|
382 | siginit (void) |
|
|
383 | { |
|
|
384 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
|
|
385 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
386 | |
|
|
387 | /* rather than sort out wether we really need nb, set it */ |
|
|
388 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
|
|
389 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
390 | |
|
|
391 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
392 | ev_io_start (&sigev); |
|
|
393 | } |
1202 | } |
394 | |
1203 | |
395 | /*****************************************************************************/ |
1204 | /*****************************************************************************/ |
396 | |
1205 | |
397 | static struct ev_idle **idles; |
1206 | static WL childs [EV_PID_HASHSIZE]; |
398 | static int idlemax, idlecnt; |
|
|
399 | |
1207 | |
400 | static struct ev_prepare **prepares; |
1208 | #ifndef _WIN32 |
401 | static int preparemax, preparecnt; |
|
|
402 | |
1209 | |
403 | static struct ev_check **checks; |
|
|
404 | static int checkmax, checkcnt; |
|
|
405 | |
|
|
406 | /*****************************************************************************/ |
|
|
407 | |
|
|
408 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
409 | static struct ev_signal childev; |
1210 | static ev_signal childev; |
|
|
1211 | |
|
|
1212 | #ifndef WIFCONTINUED |
|
|
1213 | # define WIFCONTINUED(status) 0 |
|
|
1214 | #endif |
|
|
1215 | |
|
|
1216 | /* handle a single child status event */ |
|
|
1217 | inline_speed void |
|
|
1218 | child_reap (EV_P_ int chain, int pid, int status) |
|
|
1219 | { |
|
|
1220 | ev_child *w; |
|
|
1221 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
|
|
1222 | |
|
|
1223 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1224 | { |
|
|
1225 | if ((w->pid == pid || !w->pid) |
|
|
1226 | && (!traced || (w->flags & 1))) |
|
|
1227 | { |
|
|
1228 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
|
|
1229 | w->rpid = pid; |
|
|
1230 | w->rstatus = status; |
|
|
1231 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
1232 | } |
|
|
1233 | } |
|
|
1234 | } |
410 | |
1235 | |
411 | #ifndef WCONTINUED |
1236 | #ifndef WCONTINUED |
412 | # define WCONTINUED 0 |
1237 | # define WCONTINUED 0 |
413 | #endif |
1238 | #endif |
414 | |
1239 | |
|
|
1240 | /* called on sigchld etc., calls waitpid */ |
415 | static void |
1241 | static void |
416 | childcb (struct ev_signal *sw, int revents) |
1242 | childcb (EV_P_ ev_signal *sw, int revents) |
417 | { |
1243 | { |
418 | struct ev_child *w; |
|
|
419 | int pid, status; |
1244 | int pid, status; |
420 | |
1245 | |
|
|
1246 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
421 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
1247 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
422 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
1248 | if (!WCONTINUED |
423 | if (w->pid == pid || w->pid == -1) |
1249 | || errno != EINVAL |
424 | { |
1250 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
425 | w->status = status; |
1251 | return; |
426 | event ((W)w, EV_CHILD); |
1252 | |
427 | } |
1253 | /* make sure we are called again until all children have been reaped */ |
|
|
1254 | /* we need to do it this way so that the callback gets called before we continue */ |
|
|
1255 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
1256 | |
|
|
1257 | child_reap (EV_A_ pid, pid, status); |
|
|
1258 | if (EV_PID_HASHSIZE > 1) |
|
|
1259 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
428 | } |
1260 | } |
|
|
1261 | |
|
|
1262 | #endif |
429 | |
1263 | |
430 | /*****************************************************************************/ |
1264 | /*****************************************************************************/ |
431 | |
1265 | |
|
|
1266 | #if EV_USE_PORT |
|
|
1267 | # include "ev_port.c" |
|
|
1268 | #endif |
|
|
1269 | #if EV_USE_KQUEUE |
|
|
1270 | # include "ev_kqueue.c" |
|
|
1271 | #endif |
432 | #if EV_USE_EPOLL |
1272 | #if EV_USE_EPOLL |
433 | # include "ev_epoll.c" |
1273 | # include "ev_epoll.c" |
434 | #endif |
1274 | #endif |
|
|
1275 | #if EV_USE_POLL |
|
|
1276 | # include "ev_poll.c" |
|
|
1277 | #endif |
435 | #if EV_USE_SELECT |
1278 | #if EV_USE_SELECT |
436 | # include "ev_select.c" |
1279 | # include "ev_select.c" |
437 | #endif |
1280 | #endif |
438 | |
1281 | |
439 | int |
1282 | int |
… | |
… | |
446 | ev_version_minor (void) |
1289 | ev_version_minor (void) |
447 | { |
1290 | { |
448 | return EV_VERSION_MINOR; |
1291 | return EV_VERSION_MINOR; |
449 | } |
1292 | } |
450 | |
1293 | |
451 | int ev_init (int flags) |
1294 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
1295 | int inline_size |
|
|
1296 | enable_secure (void) |
452 | { |
1297 | { |
453 | if (!ev_method) |
1298 | #ifdef _WIN32 |
|
|
1299 | return 0; |
|
|
1300 | #else |
|
|
1301 | return getuid () != geteuid () |
|
|
1302 | || getgid () != getegid (); |
|
|
1303 | #endif |
|
|
1304 | } |
|
|
1305 | |
|
|
1306 | unsigned int |
|
|
1307 | ev_supported_backends (void) |
|
|
1308 | { |
|
|
1309 | unsigned int flags = 0; |
|
|
1310 | |
|
|
1311 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
1312 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
1313 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
1314 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
1315 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
1316 | |
|
|
1317 | return flags; |
|
|
1318 | } |
|
|
1319 | |
|
|
1320 | unsigned int |
|
|
1321 | ev_recommended_backends (void) |
|
|
1322 | { |
|
|
1323 | unsigned int flags = ev_supported_backends (); |
|
|
1324 | |
|
|
1325 | #ifndef __NetBSD__ |
|
|
1326 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
1327 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
1328 | flags &= ~EVBACKEND_KQUEUE; |
|
|
1329 | #endif |
|
|
1330 | #ifdef __APPLE__ |
|
|
1331 | /* only select works correctly on that "unix-certified" platform */ |
|
|
1332 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
|
|
1333 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
|
|
1334 | #endif |
|
|
1335 | |
|
|
1336 | return flags; |
|
|
1337 | } |
|
|
1338 | |
|
|
1339 | unsigned int |
|
|
1340 | ev_embeddable_backends (void) |
|
|
1341 | { |
|
|
1342 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
|
|
1343 | |
|
|
1344 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
1345 | /* please fix it and tell me how to detect the fix */ |
|
|
1346 | flags &= ~EVBACKEND_EPOLL; |
|
|
1347 | |
|
|
1348 | return flags; |
|
|
1349 | } |
|
|
1350 | |
|
|
1351 | unsigned int |
|
|
1352 | ev_backend (EV_P) |
|
|
1353 | { |
|
|
1354 | return backend; |
|
|
1355 | } |
|
|
1356 | |
|
|
1357 | unsigned int |
|
|
1358 | ev_loop_count (EV_P) |
|
|
1359 | { |
|
|
1360 | return loop_count; |
|
|
1361 | } |
|
|
1362 | |
|
|
1363 | void |
|
|
1364 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1365 | { |
|
|
1366 | io_blocktime = interval; |
|
|
1367 | } |
|
|
1368 | |
|
|
1369 | void |
|
|
1370 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1371 | { |
|
|
1372 | timeout_blocktime = interval; |
|
|
1373 | } |
|
|
1374 | |
|
|
1375 | /* initialise a loop structure, must be zero-initialised */ |
|
|
1376 | static void noinline |
|
|
1377 | loop_init (EV_P_ unsigned int flags) |
|
|
1378 | { |
|
|
1379 | if (!backend) |
454 | { |
1380 | { |
|
|
1381 | #if EV_USE_REALTIME |
|
|
1382 | if (!have_realtime) |
|
|
1383 | { |
|
|
1384 | struct timespec ts; |
|
|
1385 | |
|
|
1386 | if (!clock_gettime (CLOCK_REALTIME, &ts)) |
|
|
1387 | have_realtime = 1; |
|
|
1388 | } |
|
|
1389 | #endif |
|
|
1390 | |
455 | #if EV_USE_MONOTONIC |
1391 | #if EV_USE_MONOTONIC |
|
|
1392 | if (!have_monotonic) |
|
|
1393 | { |
|
|
1394 | struct timespec ts; |
|
|
1395 | |
|
|
1396 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
1397 | have_monotonic = 1; |
|
|
1398 | } |
|
|
1399 | #endif |
|
|
1400 | |
|
|
1401 | ev_rt_now = ev_time (); |
|
|
1402 | mn_now = get_clock (); |
|
|
1403 | now_floor = mn_now; |
|
|
1404 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1405 | |
|
|
1406 | io_blocktime = 0.; |
|
|
1407 | timeout_blocktime = 0.; |
|
|
1408 | backend = 0; |
|
|
1409 | backend_fd = -1; |
|
|
1410 | gotasync = 0; |
|
|
1411 | #if EV_USE_INOTIFY |
|
|
1412 | fs_fd = -2; |
|
|
1413 | #endif |
|
|
1414 | |
|
|
1415 | /* pid check not overridable via env */ |
|
|
1416 | #ifndef _WIN32 |
|
|
1417 | if (flags & EVFLAG_FORKCHECK) |
|
|
1418 | curpid = getpid (); |
|
|
1419 | #endif |
|
|
1420 | |
|
|
1421 | if (!(flags & EVFLAG_NOENV) |
|
|
1422 | && !enable_secure () |
|
|
1423 | && getenv ("LIBEV_FLAGS")) |
|
|
1424 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
1425 | |
|
|
1426 | if (!(flags & 0x0000ffffU)) |
|
|
1427 | flags |= ev_recommended_backends (); |
|
|
1428 | |
|
|
1429 | #if EV_USE_PORT |
|
|
1430 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
1431 | #endif |
|
|
1432 | #if EV_USE_KQUEUE |
|
|
1433 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
1434 | #endif |
|
|
1435 | #if EV_USE_EPOLL |
|
|
1436 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
|
|
1437 | #endif |
|
|
1438 | #if EV_USE_POLL |
|
|
1439 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
|
|
1440 | #endif |
|
|
1441 | #if EV_USE_SELECT |
|
|
1442 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
|
|
1443 | #endif |
|
|
1444 | |
|
|
1445 | ev_prepare_init (&pending_w, pendingcb); |
|
|
1446 | |
|
|
1447 | ev_init (&pipe_w, pipecb); |
|
|
1448 | ev_set_priority (&pipe_w, EV_MAXPRI); |
|
|
1449 | } |
|
|
1450 | } |
|
|
1451 | |
|
|
1452 | /* free up a loop structure */ |
|
|
1453 | static void noinline |
|
|
1454 | loop_destroy (EV_P) |
|
|
1455 | { |
|
|
1456 | int i; |
|
|
1457 | |
|
|
1458 | if (ev_is_active (&pipe_w)) |
|
|
1459 | { |
|
|
1460 | ev_ref (EV_A); /* signal watcher */ |
|
|
1461 | ev_io_stop (EV_A_ &pipe_w); |
|
|
1462 | |
|
|
1463 | #if EV_USE_EVENTFD |
|
|
1464 | if (evfd >= 0) |
|
|
1465 | close (evfd); |
|
|
1466 | #endif |
|
|
1467 | |
|
|
1468 | if (evpipe [0] >= 0) |
|
|
1469 | { |
|
|
1470 | close (evpipe [0]); |
|
|
1471 | close (evpipe [1]); |
|
|
1472 | } |
|
|
1473 | } |
|
|
1474 | |
|
|
1475 | #if EV_USE_INOTIFY |
|
|
1476 | if (fs_fd >= 0) |
|
|
1477 | close (fs_fd); |
|
|
1478 | #endif |
|
|
1479 | |
|
|
1480 | if (backend_fd >= 0) |
|
|
1481 | close (backend_fd); |
|
|
1482 | |
|
|
1483 | #if EV_USE_PORT |
|
|
1484 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
1485 | #endif |
|
|
1486 | #if EV_USE_KQUEUE |
|
|
1487 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
1488 | #endif |
|
|
1489 | #if EV_USE_EPOLL |
|
|
1490 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
1491 | #endif |
|
|
1492 | #if EV_USE_POLL |
|
|
1493 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
1494 | #endif |
|
|
1495 | #if EV_USE_SELECT |
|
|
1496 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
1497 | #endif |
|
|
1498 | |
|
|
1499 | for (i = NUMPRI; i--; ) |
|
|
1500 | { |
|
|
1501 | array_free (pending, [i]); |
|
|
1502 | #if EV_IDLE_ENABLE |
|
|
1503 | array_free (idle, [i]); |
|
|
1504 | #endif |
|
|
1505 | } |
|
|
1506 | |
|
|
1507 | ev_free (anfds); anfdmax = 0; |
|
|
1508 | |
|
|
1509 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
1510 | array_free (rfeed, EMPTY); |
|
|
1511 | array_free (fdchange, EMPTY); |
|
|
1512 | array_free (timer, EMPTY); |
|
|
1513 | #if EV_PERIODIC_ENABLE |
|
|
1514 | array_free (periodic, EMPTY); |
|
|
1515 | #endif |
|
|
1516 | #if EV_FORK_ENABLE |
|
|
1517 | array_free (fork, EMPTY); |
|
|
1518 | #endif |
|
|
1519 | array_free (prepare, EMPTY); |
|
|
1520 | array_free (check, EMPTY); |
|
|
1521 | #if EV_ASYNC_ENABLE |
|
|
1522 | array_free (async, EMPTY); |
|
|
1523 | #endif |
|
|
1524 | |
|
|
1525 | backend = 0; |
|
|
1526 | } |
|
|
1527 | |
|
|
1528 | #if EV_USE_INOTIFY |
|
|
1529 | inline_size void infy_fork (EV_P); |
|
|
1530 | #endif |
|
|
1531 | |
|
|
1532 | inline_size void |
|
|
1533 | loop_fork (EV_P) |
|
|
1534 | { |
|
|
1535 | #if EV_USE_PORT |
|
|
1536 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
1537 | #endif |
|
|
1538 | #if EV_USE_KQUEUE |
|
|
1539 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
1540 | #endif |
|
|
1541 | #if EV_USE_EPOLL |
|
|
1542 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
1543 | #endif |
|
|
1544 | #if EV_USE_INOTIFY |
|
|
1545 | infy_fork (EV_A); |
|
|
1546 | #endif |
|
|
1547 | |
|
|
1548 | if (ev_is_active (&pipe_w)) |
|
|
1549 | { |
|
|
1550 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1551 | /* while we modify the fd vars */ |
|
|
1552 | gotsig = 1; |
|
|
1553 | #if EV_ASYNC_ENABLE |
|
|
1554 | gotasync = 1; |
|
|
1555 | #endif |
|
|
1556 | |
|
|
1557 | ev_ref (EV_A); |
|
|
1558 | ev_io_stop (EV_A_ &pipe_w); |
|
|
1559 | |
|
|
1560 | #if EV_USE_EVENTFD |
|
|
1561 | if (evfd >= 0) |
|
|
1562 | close (evfd); |
|
|
1563 | #endif |
|
|
1564 | |
|
|
1565 | if (evpipe [0] >= 0) |
|
|
1566 | { |
|
|
1567 | close (evpipe [0]); |
|
|
1568 | close (evpipe [1]); |
|
|
1569 | } |
|
|
1570 | |
|
|
1571 | evpipe_init (EV_A); |
|
|
1572 | /* now iterate over everything, in case we missed something */ |
|
|
1573 | pipecb (EV_A_ &pipe_w, EV_READ); |
|
|
1574 | } |
|
|
1575 | |
|
|
1576 | postfork = 0; |
|
|
1577 | } |
|
|
1578 | |
|
|
1579 | #if EV_MULTIPLICITY |
|
|
1580 | |
|
|
1581 | struct ev_loop * |
|
|
1582 | ev_loop_new (unsigned int flags) |
|
|
1583 | { |
|
|
1584 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
1585 | |
|
|
1586 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
1587 | |
|
|
1588 | loop_init (EV_A_ flags); |
|
|
1589 | |
|
|
1590 | if (ev_backend (EV_A)) |
|
|
1591 | return loop; |
|
|
1592 | |
|
|
1593 | return 0; |
|
|
1594 | } |
|
|
1595 | |
|
|
1596 | void |
|
|
1597 | ev_loop_destroy (EV_P) |
|
|
1598 | { |
|
|
1599 | loop_destroy (EV_A); |
|
|
1600 | ev_free (loop); |
|
|
1601 | } |
|
|
1602 | |
|
|
1603 | void |
|
|
1604 | ev_loop_fork (EV_P) |
|
|
1605 | { |
|
|
1606 | postfork = 1; /* must be in line with ev_default_fork */ |
|
|
1607 | } |
|
|
1608 | |
|
|
1609 | #if EV_VERIFY |
|
|
1610 | static void noinline |
|
|
1611 | verify_watcher (EV_P_ W w) |
|
|
1612 | { |
|
|
1613 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
|
|
1614 | |
|
|
1615 | if (w->pending) |
|
|
1616 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
|
|
1617 | } |
|
|
1618 | |
|
|
1619 | static void noinline |
|
|
1620 | verify_heap (EV_P_ ANHE *heap, int N) |
|
|
1621 | { |
|
|
1622 | int i; |
|
|
1623 | |
|
|
1624 | for (i = HEAP0; i < N + HEAP0; ++i) |
|
|
1625 | { |
|
|
1626 | assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); |
|
|
1627 | assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); |
|
|
1628 | assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); |
|
|
1629 | |
|
|
1630 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
|
|
1631 | } |
|
|
1632 | } |
|
|
1633 | |
|
|
1634 | static void noinline |
|
|
1635 | array_verify (EV_P_ W *ws, int cnt) |
|
|
1636 | { |
|
|
1637 | while (cnt--) |
|
|
1638 | { |
|
|
1639 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
|
|
1640 | verify_watcher (EV_A_ ws [cnt]); |
|
|
1641 | } |
|
|
1642 | } |
|
|
1643 | #endif |
|
|
1644 | |
|
|
1645 | void |
|
|
1646 | ev_loop_verify (EV_P) |
|
|
1647 | { |
|
|
1648 | #if EV_VERIFY |
|
|
1649 | int i; |
|
|
1650 | WL w; |
|
|
1651 | |
|
|
1652 | assert (activecnt >= -1); |
|
|
1653 | |
|
|
1654 | assert (fdchangemax >= fdchangecnt); |
|
|
1655 | for (i = 0; i < fdchangecnt; ++i) |
|
|
1656 | assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); |
|
|
1657 | |
|
|
1658 | assert (anfdmax >= 0); |
|
|
1659 | for (i = 0; i < anfdmax; ++i) |
|
|
1660 | for (w = anfds [i].head; w; w = w->next) |
456 | { |
1661 | { |
457 | struct timespec ts; |
1662 | verify_watcher (EV_A_ (W)w); |
458 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1663 | assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); |
459 | have_monotonic = 1; |
1664 | assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
460 | } |
1665 | } |
|
|
1666 | |
|
|
1667 | assert (timermax >= timercnt); |
|
|
1668 | verify_heap (EV_A_ timers, timercnt); |
|
|
1669 | |
|
|
1670 | #if EV_PERIODIC_ENABLE |
|
|
1671 | assert (periodicmax >= periodiccnt); |
|
|
1672 | verify_heap (EV_A_ periodics, periodiccnt); |
|
|
1673 | #endif |
|
|
1674 | |
|
|
1675 | for (i = NUMPRI; i--; ) |
|
|
1676 | { |
|
|
1677 | assert (pendingmax [i] >= pendingcnt [i]); |
|
|
1678 | #if EV_IDLE_ENABLE |
|
|
1679 | assert (idleall >= 0); |
|
|
1680 | assert (idlemax [i] >= idlecnt [i]); |
|
|
1681 | array_verify (EV_A_ (W *)idles [i], idlecnt [i]); |
|
|
1682 | #endif |
|
|
1683 | } |
|
|
1684 | |
|
|
1685 | #if EV_FORK_ENABLE |
|
|
1686 | assert (forkmax >= forkcnt); |
|
|
1687 | array_verify (EV_A_ (W *)forks, forkcnt); |
|
|
1688 | #endif |
|
|
1689 | |
|
|
1690 | #if EV_ASYNC_ENABLE |
|
|
1691 | assert (asyncmax >= asynccnt); |
|
|
1692 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
|
|
1693 | #endif |
|
|
1694 | |
|
|
1695 | assert (preparemax >= preparecnt); |
|
|
1696 | array_verify (EV_A_ (W *)prepares, preparecnt); |
|
|
1697 | |
|
|
1698 | assert (checkmax >= checkcnt); |
|
|
1699 | array_verify (EV_A_ (W *)checks, checkcnt); |
|
|
1700 | |
|
|
1701 | # if 0 |
|
|
1702 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1703 | for (signum = signalmax; signum--; ) if (signals [signum].gotsig) |
461 | #endif |
1704 | # endif |
462 | |
|
|
463 | ev_now = ev_time (); |
|
|
464 | now = get_clock (); |
|
|
465 | diff = ev_now - now; |
|
|
466 | |
|
|
467 | if (pipe (sigpipe)) |
|
|
468 | return 0; |
|
|
469 | |
|
|
470 | ev_method = EVMETHOD_NONE; |
|
|
471 | #if EV_USE_EPOLL |
|
|
472 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
|
|
473 | #endif |
1705 | #endif |
474 | #if EV_USE_SELECT |
1706 | } |
475 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
476 | #endif |
|
|
477 | |
1707 | |
478 | if (ev_method) |
1708 | #endif /* multiplicity */ |
|
|
1709 | |
|
|
1710 | #if EV_MULTIPLICITY |
|
|
1711 | struct ev_loop * |
|
|
1712 | ev_default_loop_init (unsigned int flags) |
|
|
1713 | #else |
|
|
1714 | int |
|
|
1715 | ev_default_loop (unsigned int flags) |
|
|
1716 | #endif |
|
|
1717 | { |
|
|
1718 | if (!ev_default_loop_ptr) |
|
|
1719 | { |
|
|
1720 | #if EV_MULTIPLICITY |
|
|
1721 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
|
|
1722 | #else |
|
|
1723 | ev_default_loop_ptr = 1; |
|
|
1724 | #endif |
|
|
1725 | |
|
|
1726 | loop_init (EV_A_ flags); |
|
|
1727 | |
|
|
1728 | if (ev_backend (EV_A)) |
479 | { |
1729 | { |
480 | ev_watcher_init (&sigev, sigcb); |
1730 | #ifndef _WIN32 |
481 | siginit (); |
|
|
482 | |
|
|
483 | ev_signal_init (&childev, childcb, SIGCHLD); |
1731 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
1732 | ev_set_priority (&childev, EV_MAXPRI); |
484 | ev_signal_start (&childev); |
1733 | ev_signal_start (EV_A_ &childev); |
485 | } |
1734 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
486 | } |
|
|
487 | |
|
|
488 | return ev_method; |
|
|
489 | } |
|
|
490 | |
|
|
491 | /*****************************************************************************/ |
|
|
492 | |
|
|
493 | void |
|
|
494 | ev_fork_prepare (void) |
|
|
495 | { |
|
|
496 | /* nop */ |
|
|
497 | } |
|
|
498 | |
|
|
499 | void |
|
|
500 | ev_fork_parent (void) |
|
|
501 | { |
|
|
502 | /* nop */ |
|
|
503 | } |
|
|
504 | |
|
|
505 | void |
|
|
506 | ev_fork_child (void) |
|
|
507 | { |
|
|
508 | #if EV_USE_EPOLL |
|
|
509 | if (ev_method == EVMETHOD_EPOLL) |
|
|
510 | epoll_postfork_child (); |
|
|
511 | #endif |
1735 | #endif |
512 | |
|
|
513 | ev_io_stop (&sigev); |
|
|
514 | close (sigpipe [0]); |
|
|
515 | close (sigpipe [1]); |
|
|
516 | pipe (sigpipe); |
|
|
517 | siginit (); |
|
|
518 | } |
|
|
519 | |
|
|
520 | /*****************************************************************************/ |
|
|
521 | |
|
|
522 | static void |
|
|
523 | call_pending (void) |
|
|
524 | { |
|
|
525 | while (pendingcnt) |
|
|
526 | { |
|
|
527 | ANPENDING *p = pendings + --pendingcnt; |
|
|
528 | |
|
|
529 | if (p->w) |
|
|
530 | { |
|
|
531 | p->w->pending = 0; |
|
|
532 | p->w->cb (p->w, p->events); |
|
|
533 | } |
|
|
534 | } |
|
|
535 | } |
|
|
536 | |
|
|
537 | static void |
|
|
538 | timers_reify (void) |
|
|
539 | { |
|
|
540 | while (timercnt && timers [0]->at <= now) |
|
|
541 | { |
|
|
542 | struct ev_timer *w = timers [0]; |
|
|
543 | |
|
|
544 | /* first reschedule or stop timer */ |
|
|
545 | if (w->repeat) |
|
|
546 | { |
|
|
547 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
548 | w->at = now + w->repeat; |
|
|
549 | downheap ((WT *)timers, timercnt, 0); |
|
|
550 | } |
1736 | } |
551 | else |
1737 | else |
552 | ev_timer_stop (w); /* nonrepeating: stop timer */ |
1738 | ev_default_loop_ptr = 0; |
553 | |
|
|
554 | event ((W)w, EV_TIMEOUT); |
|
|
555 | } |
1739 | } |
556 | } |
|
|
557 | |
1740 | |
558 | static void |
1741 | return ev_default_loop_ptr; |
559 | periodics_reify (void) |
1742 | } |
|
|
1743 | |
|
|
1744 | void |
|
|
1745 | ev_default_destroy (void) |
560 | { |
1746 | { |
561 | while (periodiccnt && periodics [0]->at <= ev_now) |
1747 | #if EV_MULTIPLICITY |
|
|
1748 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1749 | #endif |
|
|
1750 | |
|
|
1751 | ev_default_loop_ptr = 0; |
|
|
1752 | |
|
|
1753 | #ifndef _WIN32 |
|
|
1754 | ev_ref (EV_A); /* child watcher */ |
|
|
1755 | ev_signal_stop (EV_A_ &childev); |
|
|
1756 | #endif |
|
|
1757 | |
|
|
1758 | loop_destroy (EV_A); |
|
|
1759 | } |
|
|
1760 | |
|
|
1761 | void |
|
|
1762 | ev_default_fork (void) |
|
|
1763 | { |
|
|
1764 | #if EV_MULTIPLICITY |
|
|
1765 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1766 | #endif |
|
|
1767 | |
|
|
1768 | postfork = 1; /* must be in line with ev_loop_fork */ |
|
|
1769 | } |
|
|
1770 | |
|
|
1771 | /*****************************************************************************/ |
|
|
1772 | |
|
|
1773 | void |
|
|
1774 | ev_invoke (EV_P_ void *w, int revents) |
|
|
1775 | { |
|
|
1776 | EV_CB_INVOKE ((W)w, revents); |
|
|
1777 | } |
|
|
1778 | |
|
|
1779 | inline_speed void |
|
|
1780 | call_pending (EV_P) |
|
|
1781 | { |
|
|
1782 | int pri; |
|
|
1783 | |
|
|
1784 | for (pri = NUMPRI; pri--; ) |
|
|
1785 | while (pendingcnt [pri]) |
562 | { |
1786 | { |
563 | struct ev_periodic *w = periodics [0]; |
1787 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
564 | |
1788 | |
565 | /* first reschedule or stop timer */ |
1789 | /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/ |
566 | if (w->interval) |
1790 | /* ^ this is no longer true, as pending_w could be here */ |
|
|
1791 | |
|
|
1792 | p->w->pending = 0; |
|
|
1793 | EV_CB_INVOKE (p->w, p->events); |
|
|
1794 | EV_FREQUENT_CHECK; |
|
|
1795 | } |
|
|
1796 | } |
|
|
1797 | |
|
|
1798 | #if EV_IDLE_ENABLE |
|
|
1799 | /* make idle watchers pending. this handles the "call-idle */ |
|
|
1800 | /* only when higher priorities are idle" logic */ |
|
|
1801 | inline_size void |
|
|
1802 | idle_reify (EV_P) |
|
|
1803 | { |
|
|
1804 | if (expect_false (idleall)) |
|
|
1805 | { |
|
|
1806 | int pri; |
|
|
1807 | |
|
|
1808 | for (pri = NUMPRI; pri--; ) |
567 | { |
1809 | { |
568 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
1810 | if (pendingcnt [pri]) |
569 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now)); |
1811 | break; |
570 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
571 | } |
|
|
572 | else |
|
|
573 | ev_periodic_stop (w); /* nonrepeating: stop timer */ |
|
|
574 | |
1812 | |
575 | event ((W)w, EV_PERIODIC); |
1813 | if (idlecnt [pri]) |
576 | } |
|
|
577 | } |
|
|
578 | |
|
|
579 | static void |
|
|
580 | periodics_reschedule (ev_tstamp diff) |
|
|
581 | { |
|
|
582 | int i; |
|
|
583 | |
|
|
584 | /* adjust periodics after time jump */ |
|
|
585 | for (i = 0; i < periodiccnt; ++i) |
|
|
586 | { |
|
|
587 | struct ev_periodic *w = periodics [i]; |
|
|
588 | |
|
|
589 | if (w->interval) |
|
|
590 | { |
|
|
591 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
|
|
592 | |
|
|
593 | if (fabs (diff) >= 1e-4) |
|
|
594 | { |
1814 | { |
595 | ev_periodic_stop (w); |
1815 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
596 | ev_periodic_start (w); |
1816 | break; |
597 | |
|
|
598 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
|
|
599 | } |
1817 | } |
600 | } |
1818 | } |
601 | } |
1819 | } |
602 | } |
1820 | } |
|
|
1821 | #endif |
603 | |
1822 | |
604 | static void |
1823 | /* make timers pending */ |
605 | time_update (void) |
1824 | inline_size void |
|
|
1825 | timers_reify (EV_P) |
|
|
1826 | { |
|
|
1827 | EV_FREQUENT_CHECK; |
|
|
1828 | |
|
|
1829 | if (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
|
|
1830 | { |
|
|
1831 | do |
|
|
1832 | { |
|
|
1833 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
|
|
1834 | |
|
|
1835 | /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/ |
|
|
1836 | |
|
|
1837 | /* first reschedule or stop timer */ |
|
|
1838 | if (w->repeat) |
|
|
1839 | { |
|
|
1840 | ev_at (w) += w->repeat; |
|
|
1841 | if (ev_at (w) < mn_now) |
|
|
1842 | ev_at (w) = mn_now; |
|
|
1843 | |
|
|
1844 | assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
1845 | |
|
|
1846 | ANHE_at_cache (timers [HEAP0]); |
|
|
1847 | downheap (timers, timercnt, HEAP0); |
|
|
1848 | } |
|
|
1849 | else |
|
|
1850 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1851 | |
|
|
1852 | EV_FREQUENT_CHECK; |
|
|
1853 | feed_reverse (EV_A_ (W)w); |
|
|
1854 | } |
|
|
1855 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); |
|
|
1856 | |
|
|
1857 | feed_reverse_done (EV_A_ EV_TIMEOUT); |
|
|
1858 | } |
|
|
1859 | } |
|
|
1860 | |
|
|
1861 | #if EV_PERIODIC_ENABLE |
|
|
1862 | /* make periodics pending */ |
|
|
1863 | inline_size void |
|
|
1864 | periodics_reify (EV_P) |
|
|
1865 | { |
|
|
1866 | EV_FREQUENT_CHECK; |
|
|
1867 | |
|
|
1868 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
|
|
1869 | { |
|
|
1870 | int feed_count = 0; |
|
|
1871 | |
|
|
1872 | do |
|
|
1873 | { |
|
|
1874 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
|
|
1875 | |
|
|
1876 | /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ |
|
|
1877 | |
|
|
1878 | /* first reschedule or stop timer */ |
|
|
1879 | if (w->reschedule_cb) |
|
|
1880 | { |
|
|
1881 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
1882 | |
|
|
1883 | assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
|
|
1884 | |
|
|
1885 | ANHE_at_cache (periodics [HEAP0]); |
|
|
1886 | downheap (periodics, periodiccnt, HEAP0); |
|
|
1887 | } |
|
|
1888 | else if (w->interval) |
|
|
1889 | { |
|
|
1890 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1891 | /* if next trigger time is not sufficiently in the future, put it there */ |
|
|
1892 | /* this might happen because of floating point inexactness */ |
|
|
1893 | if (ev_at (w) - ev_rt_now < TIME_EPSILON) |
|
|
1894 | { |
|
|
1895 | ev_at (w) += w->interval; |
|
|
1896 | |
|
|
1897 | /* if interval is unreasonably low we might still have a time in the past */ |
|
|
1898 | /* so correct this. this will make the periodic very inexact, but the user */ |
|
|
1899 | /* has effectively asked to get triggered more often than possible */ |
|
|
1900 | if (ev_at (w) < ev_rt_now) |
|
|
1901 | ev_at (w) = ev_rt_now; |
|
|
1902 | } |
|
|
1903 | |
|
|
1904 | ANHE_at_cache (periodics [HEAP0]); |
|
|
1905 | downheap (periodics, periodiccnt, HEAP0); |
|
|
1906 | } |
|
|
1907 | else |
|
|
1908 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1909 | |
|
|
1910 | EV_FREQUENT_CHECK; |
|
|
1911 | feed_reverse (EV_A_ (W)w); |
|
|
1912 | } |
|
|
1913 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now); |
|
|
1914 | |
|
|
1915 | feed_reverse_done (EV_A_ EV_PERIODIC); |
|
|
1916 | } |
|
|
1917 | } |
|
|
1918 | |
|
|
1919 | /* simply recalculate all periodics */ |
|
|
1920 | /* TODO: maybe ensure that at leats one event happens when jumping forward? */ |
|
|
1921 | static void noinline |
|
|
1922 | periodics_reschedule (EV_P) |
606 | { |
1923 | { |
607 | int i; |
1924 | int i; |
608 | |
1925 | |
609 | ev_now = ev_time (); |
1926 | /* adjust periodics after time jump */ |
|
|
1927 | for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
|
|
1928 | { |
|
|
1929 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
610 | |
1930 | |
611 | if (have_monotonic) |
1931 | if (w->reschedule_cb) |
|
|
1932 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
1933 | else if (w->interval) |
|
|
1934 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1935 | |
|
|
1936 | ANHE_at_cache (periodics [i]); |
612 | { |
1937 | } |
|
|
1938 | |
|
|
1939 | reheap (periodics, periodiccnt); |
|
|
1940 | } |
|
|
1941 | #endif |
|
|
1942 | |
|
|
1943 | /* adjust all timers by a given offset */ |
|
|
1944 | static void noinline |
|
|
1945 | timers_reschedule (EV_P_ ev_tstamp adjust) |
|
|
1946 | { |
|
|
1947 | int i; |
|
|
1948 | |
|
|
1949 | for (i = 0; i < timercnt; ++i) |
|
|
1950 | { |
|
|
1951 | ANHE *he = timers + i + HEAP0; |
|
|
1952 | ANHE_w (*he)->at += adjust; |
|
|
1953 | ANHE_at_cache (*he); |
|
|
1954 | } |
|
|
1955 | } |
|
|
1956 | |
|
|
1957 | /* fetch new monotonic and realtime times from the kernel */ |
|
|
1958 | /* also detetc if there was a timejump, and act accordingly */ |
|
|
1959 | inline_speed void |
|
|
1960 | time_update (EV_P_ ev_tstamp max_block) |
|
|
1961 | { |
|
|
1962 | #if EV_USE_MONOTONIC |
|
|
1963 | if (expect_true (have_monotonic)) |
|
|
1964 | { |
|
|
1965 | int i; |
613 | ev_tstamp odiff = diff; |
1966 | ev_tstamp odiff = rtmn_diff; |
614 | |
1967 | |
615 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
1968 | mn_now = get_clock (); |
|
|
1969 | |
|
|
1970 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
1971 | /* interpolate in the meantime */ |
|
|
1972 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
616 | { |
1973 | { |
617 | now = get_clock (); |
1974 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1975 | return; |
|
|
1976 | } |
|
|
1977 | |
|
|
1978 | now_floor = mn_now; |
|
|
1979 | ev_rt_now = ev_time (); |
|
|
1980 | |
|
|
1981 | /* loop a few times, before making important decisions. |
|
|
1982 | * on the choice of "4": one iteration isn't enough, |
|
|
1983 | * in case we get preempted during the calls to |
|
|
1984 | * ev_time and get_clock. a second call is almost guaranteed |
|
|
1985 | * to succeed in that case, though. and looping a few more times |
|
|
1986 | * doesn't hurt either as we only do this on time-jumps or |
|
|
1987 | * in the unlikely event of having been preempted here. |
|
|
1988 | */ |
|
|
1989 | for (i = 4; --i; ) |
|
|
1990 | { |
618 | diff = ev_now - now; |
1991 | rtmn_diff = ev_rt_now - mn_now; |
619 | |
1992 | |
620 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
1993 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
621 | return; /* all is well */ |
1994 | return; /* all is well */ |
622 | |
1995 | |
623 | ev_now = ev_time (); |
1996 | ev_rt_now = ev_time (); |
|
|
1997 | mn_now = get_clock (); |
|
|
1998 | now_floor = mn_now; |
624 | } |
1999 | } |
625 | |
2000 | |
626 | periodics_reschedule (diff - odiff); |
|
|
627 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
2001 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
2002 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
2003 | # if EV_PERIODIC_ENABLE |
|
|
2004 | periodics_reschedule (EV_A); |
|
|
2005 | # endif |
628 | } |
2006 | } |
629 | else |
2007 | else |
|
|
2008 | #endif |
630 | { |
2009 | { |
631 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
2010 | ev_rt_now = ev_time (); |
|
|
2011 | |
|
|
2012 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
632 | { |
2013 | { |
633 | periodics_reschedule (ev_now - now); |
|
|
634 | |
|
|
635 | /* adjust timers. this is easy, as the offset is the same for all */ |
2014 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
636 | for (i = 0; i < timercnt; ++i) |
2015 | timers_reschedule (EV_A_ ev_rt_now - mn_now); |
637 | timers [i]->at += diff; |
2016 | #if EV_PERIODIC_ENABLE |
|
|
2017 | periodics_reschedule (EV_A); |
|
|
2018 | #endif |
638 | } |
2019 | } |
639 | |
2020 | |
640 | now = ev_now; |
2021 | mn_now = ev_rt_now; |
641 | } |
2022 | } |
642 | } |
2023 | } |
643 | |
2024 | |
644 | int ev_loop_done; |
2025 | static int loop_done; |
645 | |
2026 | |
|
|
2027 | void |
646 | void ev_loop (int flags) |
2028 | ev_loop (EV_P_ int flags) |
647 | { |
2029 | { |
648 | double block; |
2030 | loop_done = EVUNLOOP_CANCEL; |
649 | ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
2031 | |
|
|
2032 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
650 | |
2033 | |
651 | do |
2034 | do |
652 | { |
2035 | { |
|
|
2036 | #if EV_VERIFY >= 2 |
|
|
2037 | ev_loop_verify (EV_A); |
|
|
2038 | #endif |
|
|
2039 | |
|
|
2040 | #ifndef _WIN32 |
|
|
2041 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
2042 | if (expect_false (getpid () != curpid)) |
|
|
2043 | { |
|
|
2044 | curpid = getpid (); |
|
|
2045 | postfork = 1; |
|
|
2046 | } |
|
|
2047 | #endif |
|
|
2048 | |
|
|
2049 | #if EV_FORK_ENABLE |
|
|
2050 | /* we might have forked, so queue fork handlers */ |
|
|
2051 | if (expect_false (postfork)) |
|
|
2052 | if (forkcnt) |
|
|
2053 | { |
|
|
2054 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
2055 | call_pending (EV_A); |
|
|
2056 | } |
|
|
2057 | #endif |
|
|
2058 | |
653 | /* queue check watchers (and execute them) */ |
2059 | /* queue prepare watchers (and execute them) */ |
654 | if (preparecnt) |
2060 | if (expect_false (preparecnt)) |
655 | { |
2061 | { |
656 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
2062 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
657 | call_pending (); |
2063 | call_pending (EV_A); |
658 | } |
2064 | } |
659 | |
2065 | |
|
|
2066 | /* we might have forked, so reify kernel state if necessary */ |
|
|
2067 | if (expect_false (postfork)) |
|
|
2068 | loop_fork (EV_A); |
|
|
2069 | |
660 | /* update fd-related kernel structures */ |
2070 | /* update fd-related kernel structures */ |
661 | fd_reify (); |
2071 | fd_reify (EV_A); |
662 | |
2072 | |
663 | /* calculate blocking time */ |
2073 | /* calculate blocking time */ |
|
|
2074 | { |
|
|
2075 | ev_tstamp waittime = 0.; |
|
|
2076 | ev_tstamp sleeptime = 0.; |
664 | |
2077 | |
665 | /* we only need this for !monotonic clockor timers, but as we basically |
2078 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
666 | always have timers, we just calculate it always */ |
|
|
667 | ev_now = ev_time (); |
|
|
668 | |
|
|
669 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
|
|
670 | block = 0.; |
|
|
671 | else |
|
|
672 | { |
2079 | { |
|
|
2080 | /* update time to cancel out callback processing overhead */ |
|
|
2081 | time_update (EV_A_ 1e100); |
|
|
2082 | |
673 | block = MAX_BLOCKTIME; |
2083 | waittime = MAX_BLOCKTIME; |
674 | |
2084 | |
675 | if (timercnt) |
2085 | if (timercnt) |
676 | { |
2086 | { |
677 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
2087 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
678 | if (block > to) block = to; |
2088 | if (waittime > to) waittime = to; |
679 | } |
2089 | } |
680 | |
2090 | |
|
|
2091 | #if EV_PERIODIC_ENABLE |
681 | if (periodiccnt) |
2092 | if (periodiccnt) |
682 | { |
2093 | { |
683 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
2094 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
684 | if (block > to) block = to; |
2095 | if (waittime > to) waittime = to; |
685 | } |
2096 | } |
|
|
2097 | #endif |
686 | |
2098 | |
687 | if (block < 0.) block = 0.; |
2099 | if (expect_false (waittime < timeout_blocktime)) |
|
|
2100 | waittime = timeout_blocktime; |
|
|
2101 | |
|
|
2102 | sleeptime = waittime - backend_fudge; |
|
|
2103 | |
|
|
2104 | if (expect_true (sleeptime > io_blocktime)) |
|
|
2105 | sleeptime = io_blocktime; |
|
|
2106 | |
|
|
2107 | if (sleeptime) |
|
|
2108 | { |
|
|
2109 | ev_sleep (sleeptime); |
|
|
2110 | waittime -= sleeptime; |
|
|
2111 | } |
688 | } |
2112 | } |
689 | |
2113 | |
690 | method_poll (block); |
2114 | ++loop_count; |
|
|
2115 | backend_poll (EV_A_ waittime); |
691 | |
2116 | |
692 | /* update ev_now, do magic */ |
2117 | /* update ev_rt_now, do magic */ |
693 | time_update (); |
2118 | time_update (EV_A_ waittime + sleeptime); |
|
|
2119 | } |
694 | |
2120 | |
695 | /* queue pending timers and reschedule them */ |
2121 | /* queue pending timers and reschedule them */ |
696 | timers_reify (); /* relative timers called last */ |
2122 | timers_reify (EV_A); /* relative timers called last */ |
|
|
2123 | #if EV_PERIODIC_ENABLE |
697 | periodics_reify (); /* absolute timers called first */ |
2124 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
2125 | #endif |
698 | |
2126 | |
|
|
2127 | #if EV_IDLE_ENABLE |
699 | /* queue idle watchers unless io or timers are pending */ |
2128 | /* queue idle watchers unless other events are pending */ |
700 | if (!pendingcnt) |
2129 | idle_reify (EV_A); |
701 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
2130 | #endif |
702 | |
2131 | |
703 | /* queue check watchers, to be executed first */ |
2132 | /* queue check watchers, to be executed first */ |
704 | if (checkcnt) |
2133 | if (expect_false (checkcnt)) |
705 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
2134 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
706 | |
2135 | |
707 | call_pending (); |
2136 | call_pending (EV_A); |
708 | } |
2137 | } |
709 | while (!ev_loop_done); |
2138 | while (expect_true ( |
|
|
2139 | activecnt |
|
|
2140 | && !loop_done |
|
|
2141 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
|
|
2142 | )); |
710 | |
2143 | |
711 | if (ev_loop_done != 2) |
2144 | if (loop_done == EVUNLOOP_ONE) |
|
|
2145 | loop_done = EVUNLOOP_CANCEL; |
|
|
2146 | } |
|
|
2147 | |
|
|
2148 | void |
|
|
2149 | ev_unloop (EV_P_ int how) |
|
|
2150 | { |
712 | ev_loop_done = 0; |
2151 | loop_done = how; |
|
|
2152 | } |
|
|
2153 | |
|
|
2154 | void |
|
|
2155 | ev_ref (EV_P) |
|
|
2156 | { |
|
|
2157 | ++activecnt; |
|
|
2158 | } |
|
|
2159 | |
|
|
2160 | void |
|
|
2161 | ev_unref (EV_P) |
|
|
2162 | { |
|
|
2163 | --activecnt; |
|
|
2164 | } |
|
|
2165 | |
|
|
2166 | void |
|
|
2167 | ev_now_update (EV_P) |
|
|
2168 | { |
|
|
2169 | time_update (EV_A_ 1e100); |
|
|
2170 | } |
|
|
2171 | |
|
|
2172 | void |
|
|
2173 | ev_suspend (EV_P) |
|
|
2174 | { |
|
|
2175 | ev_now_update (EV_A); |
|
|
2176 | } |
|
|
2177 | |
|
|
2178 | void |
|
|
2179 | ev_resume (EV_P) |
|
|
2180 | { |
|
|
2181 | ev_tstamp mn_prev = mn_now; |
|
|
2182 | |
|
|
2183 | ev_now_update (EV_A); |
|
|
2184 | timers_reschedule (EV_A_ mn_now - mn_prev); |
|
|
2185 | #if EV_PERIODIC_ENABLE |
|
|
2186 | /* TODO: really do this? */ |
|
|
2187 | periodics_reschedule (EV_A); |
|
|
2188 | #endif |
713 | } |
2189 | } |
714 | |
2190 | |
715 | /*****************************************************************************/ |
2191 | /*****************************************************************************/ |
|
|
2192 | /* singly-linked list management, used when the expected list length is short */ |
716 | |
2193 | |
717 | static void |
2194 | inline_size void |
718 | wlist_add (WL *head, WL elem) |
2195 | wlist_add (WL *head, WL elem) |
719 | { |
2196 | { |
720 | elem->next = *head; |
2197 | elem->next = *head; |
721 | *head = elem; |
2198 | *head = elem; |
722 | } |
2199 | } |
723 | |
2200 | |
724 | static void |
2201 | inline_size void |
725 | wlist_del (WL *head, WL elem) |
2202 | wlist_del (WL *head, WL elem) |
726 | { |
2203 | { |
727 | while (*head) |
2204 | while (*head) |
728 | { |
2205 | { |
729 | if (*head == elem) |
2206 | if (*head == elem) |
… | |
… | |
734 | |
2211 | |
735 | head = &(*head)->next; |
2212 | head = &(*head)->next; |
736 | } |
2213 | } |
737 | } |
2214 | } |
738 | |
2215 | |
739 | static void |
2216 | /* internal, faster, version of ev_clear_pending */ |
|
|
2217 | inline_speed void |
740 | ev_clear_pending (W w) |
2218 | clear_pending (EV_P_ W w) |
741 | { |
2219 | { |
742 | if (w->pending) |
2220 | if (w->pending) |
743 | { |
2221 | { |
744 | pendings [w->pending - 1].w = 0; |
2222 | pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w; |
745 | w->pending = 0; |
2223 | w->pending = 0; |
746 | } |
2224 | } |
747 | } |
2225 | } |
748 | |
2226 | |
749 | static void |
2227 | int |
|
|
2228 | ev_clear_pending (EV_P_ void *w) |
|
|
2229 | { |
|
|
2230 | W w_ = (W)w; |
|
|
2231 | int pending = w_->pending; |
|
|
2232 | |
|
|
2233 | if (expect_true (pending)) |
|
|
2234 | { |
|
|
2235 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
2236 | p->w = (W)&pending_w; |
|
|
2237 | w_->pending = 0; |
|
|
2238 | return p->events; |
|
|
2239 | } |
|
|
2240 | else |
|
|
2241 | return 0; |
|
|
2242 | } |
|
|
2243 | |
|
|
2244 | inline_size void |
|
|
2245 | pri_adjust (EV_P_ W w) |
|
|
2246 | { |
|
|
2247 | int pri = w->priority; |
|
|
2248 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
2249 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
2250 | w->priority = pri; |
|
|
2251 | } |
|
|
2252 | |
|
|
2253 | inline_speed void |
750 | ev_start (W w, int active) |
2254 | ev_start (EV_P_ W w, int active) |
751 | { |
2255 | { |
|
|
2256 | pri_adjust (EV_A_ w); |
752 | w->active = active; |
2257 | w->active = active; |
|
|
2258 | ev_ref (EV_A); |
753 | } |
2259 | } |
754 | |
2260 | |
755 | static void |
2261 | inline_size void |
756 | ev_stop (W w) |
2262 | ev_stop (EV_P_ W w) |
757 | { |
2263 | { |
|
|
2264 | ev_unref (EV_A); |
758 | w->active = 0; |
2265 | w->active = 0; |
759 | } |
2266 | } |
760 | |
2267 | |
761 | /*****************************************************************************/ |
2268 | /*****************************************************************************/ |
762 | |
2269 | |
763 | void |
2270 | void noinline |
764 | ev_io_start (struct ev_io *w) |
2271 | ev_io_start (EV_P_ ev_io *w) |
765 | { |
2272 | { |
|
|
2273 | int fd = w->fd; |
|
|
2274 | |
766 | if (ev_is_active (w)) |
2275 | if (expect_false (ev_is_active (w))) |
767 | return; |
2276 | return; |
768 | |
2277 | |
769 | int fd = w->fd; |
|
|
770 | |
|
|
771 | assert (("ev_io_start called with negative fd", fd >= 0)); |
2278 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
|
|
2279 | assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
772 | |
2280 | |
|
|
2281 | EV_FREQUENT_CHECK; |
|
|
2282 | |
773 | ev_start ((W)w, 1); |
2283 | ev_start (EV_A_ (W)w, 1); |
774 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
2284 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
775 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
2285 | wlist_add (&anfds[fd].head, (WL)w); |
776 | |
2286 | |
777 | fd_change (fd); |
2287 | fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1); |
778 | } |
2288 | w->events &= ~EV__IOFDSET; |
779 | |
2289 | |
780 | void |
2290 | EV_FREQUENT_CHECK; |
|
|
2291 | } |
|
|
2292 | |
|
|
2293 | void noinline |
781 | ev_io_stop (struct ev_io *w) |
2294 | ev_io_stop (EV_P_ ev_io *w) |
782 | { |
2295 | { |
783 | ev_clear_pending ((W)w); |
2296 | clear_pending (EV_A_ (W)w); |
784 | if (!ev_is_active (w)) |
2297 | if (expect_false (!ev_is_active (w))) |
785 | return; |
2298 | return; |
786 | |
2299 | |
|
|
2300 | assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
2301 | |
|
|
2302 | EV_FREQUENT_CHECK; |
|
|
2303 | |
787 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
2304 | wlist_del (&anfds[w->fd].head, (WL)w); |
788 | ev_stop ((W)w); |
2305 | ev_stop (EV_A_ (W)w); |
789 | |
2306 | |
790 | fd_change (w->fd); |
2307 | fd_change (EV_A_ w->fd, 1); |
791 | } |
|
|
792 | |
2308 | |
793 | void |
2309 | EV_FREQUENT_CHECK; |
|
|
2310 | } |
|
|
2311 | |
|
|
2312 | void noinline |
794 | ev_timer_start (struct ev_timer *w) |
2313 | ev_timer_start (EV_P_ ev_timer *w) |
795 | { |
2314 | { |
796 | if (ev_is_active (w)) |
2315 | if (expect_false (ev_is_active (w))) |
797 | return; |
2316 | return; |
798 | |
2317 | |
799 | w->at += now; |
2318 | ev_at (w) += mn_now; |
800 | |
2319 | |
801 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
2320 | assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
802 | |
2321 | |
803 | ev_start ((W)w, ++timercnt); |
2322 | EV_FREQUENT_CHECK; |
804 | array_needsize (timers, timermax, timercnt, ); |
|
|
805 | timers [timercnt - 1] = w; |
|
|
806 | upheap ((WT *)timers, timercnt - 1); |
|
|
807 | } |
|
|
808 | |
2323 | |
809 | void |
2324 | ++timercnt; |
|
|
2325 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
|
|
2326 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); |
|
|
2327 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
|
|
2328 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
2329 | upheap (timers, ev_active (w)); |
|
|
2330 | |
|
|
2331 | EV_FREQUENT_CHECK; |
|
|
2332 | |
|
|
2333 | /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
|
|
2334 | } |
|
|
2335 | |
|
|
2336 | void noinline |
810 | ev_timer_stop (struct ev_timer *w) |
2337 | ev_timer_stop (EV_P_ ev_timer *w) |
811 | { |
2338 | { |
812 | ev_clear_pending ((W)w); |
2339 | clear_pending (EV_A_ (W)w); |
813 | if (!ev_is_active (w)) |
2340 | if (expect_false (!ev_is_active (w))) |
814 | return; |
2341 | return; |
815 | |
2342 | |
816 | if (w->active < timercnt--) |
2343 | EV_FREQUENT_CHECK; |
|
|
2344 | |
|
|
2345 | { |
|
|
2346 | int active = ev_active (w); |
|
|
2347 | |
|
|
2348 | assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
|
|
2349 | |
|
|
2350 | --timercnt; |
|
|
2351 | |
|
|
2352 | if (expect_true (active < timercnt + HEAP0)) |
817 | { |
2353 | { |
818 | timers [w->active - 1] = timers [timercnt]; |
2354 | timers [active] = timers [timercnt + HEAP0]; |
819 | downheap ((WT *)timers, timercnt, w->active - 1); |
2355 | adjustheap (timers, timercnt, active); |
820 | } |
2356 | } |
|
|
2357 | } |
821 | |
2358 | |
822 | w->at = w->repeat; |
2359 | EV_FREQUENT_CHECK; |
823 | |
2360 | |
|
|
2361 | ev_at (w) -= mn_now; |
|
|
2362 | |
824 | ev_stop ((W)w); |
2363 | ev_stop (EV_A_ (W)w); |
825 | } |
2364 | } |
826 | |
2365 | |
827 | void |
2366 | void noinline |
828 | ev_timer_again (struct ev_timer *w) |
2367 | ev_timer_again (EV_P_ ev_timer *w) |
829 | { |
2368 | { |
|
|
2369 | EV_FREQUENT_CHECK; |
|
|
2370 | |
830 | if (ev_is_active (w)) |
2371 | if (ev_is_active (w)) |
831 | { |
2372 | { |
832 | if (w->repeat) |
2373 | if (w->repeat) |
833 | { |
2374 | { |
834 | w->at = now + w->repeat; |
2375 | ev_at (w) = mn_now + w->repeat; |
|
|
2376 | ANHE_at_cache (timers [ev_active (w)]); |
835 | downheap ((WT *)timers, timercnt, w->active - 1); |
2377 | adjustheap (timers, timercnt, ev_active (w)); |
836 | } |
2378 | } |
837 | else |
2379 | else |
838 | ev_timer_stop (w); |
2380 | ev_timer_stop (EV_A_ w); |
839 | } |
2381 | } |
840 | else if (w->repeat) |
2382 | else if (w->repeat) |
|
|
2383 | { |
|
|
2384 | ev_at (w) = w->repeat; |
841 | ev_timer_start (w); |
2385 | ev_timer_start (EV_A_ w); |
842 | } |
2386 | } |
843 | |
2387 | |
844 | void |
2388 | EV_FREQUENT_CHECK; |
|
|
2389 | } |
|
|
2390 | |
|
|
2391 | #if EV_PERIODIC_ENABLE |
|
|
2392 | void noinline |
845 | ev_periodic_start (struct ev_periodic *w) |
2393 | ev_periodic_start (EV_P_ ev_periodic *w) |
846 | { |
2394 | { |
847 | if (ev_is_active (w)) |
2395 | if (expect_false (ev_is_active (w))) |
848 | return; |
2396 | return; |
849 | |
2397 | |
|
|
2398 | if (w->reschedule_cb) |
|
|
2399 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
2400 | else if (w->interval) |
|
|
2401 | { |
850 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2402 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
851 | |
|
|
852 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
2403 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
853 | if (w->interval) |
|
|
854 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
2404 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2405 | } |
|
|
2406 | else |
|
|
2407 | ev_at (w) = w->offset; |
855 | |
2408 | |
|
|
2409 | EV_FREQUENT_CHECK; |
|
|
2410 | |
|
|
2411 | ++periodiccnt; |
856 | ev_start ((W)w, ++periodiccnt); |
2412 | ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); |
857 | array_needsize (periodics, periodicmax, periodiccnt, ); |
2413 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); |
858 | periodics [periodiccnt - 1] = w; |
2414 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
859 | upheap ((WT *)periodics, periodiccnt - 1); |
2415 | ANHE_at_cache (periodics [ev_active (w)]); |
860 | } |
2416 | upheap (periodics, ev_active (w)); |
861 | |
2417 | |
862 | void |
2418 | EV_FREQUENT_CHECK; |
|
|
2419 | |
|
|
2420 | /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
|
|
2421 | } |
|
|
2422 | |
|
|
2423 | void noinline |
863 | ev_periodic_stop (struct ev_periodic *w) |
2424 | ev_periodic_stop (EV_P_ ev_periodic *w) |
864 | { |
2425 | { |
865 | ev_clear_pending ((W)w); |
2426 | clear_pending (EV_A_ (W)w); |
866 | if (!ev_is_active (w)) |
2427 | if (expect_false (!ev_is_active (w))) |
867 | return; |
2428 | return; |
868 | |
2429 | |
869 | if (w->active < periodiccnt--) |
2430 | EV_FREQUENT_CHECK; |
|
|
2431 | |
|
|
2432 | { |
|
|
2433 | int active = ev_active (w); |
|
|
2434 | |
|
|
2435 | assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
|
|
2436 | |
|
|
2437 | --periodiccnt; |
|
|
2438 | |
|
|
2439 | if (expect_true (active < periodiccnt + HEAP0)) |
870 | { |
2440 | { |
871 | periodics [w->active - 1] = periodics [periodiccnt]; |
2441 | periodics [active] = periodics [periodiccnt + HEAP0]; |
872 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
2442 | adjustheap (periodics, periodiccnt, active); |
873 | } |
2443 | } |
|
|
2444 | } |
874 | |
2445 | |
|
|
2446 | EV_FREQUENT_CHECK; |
|
|
2447 | |
875 | ev_stop ((W)w); |
2448 | ev_stop (EV_A_ (W)w); |
876 | } |
2449 | } |
877 | |
2450 | |
878 | void |
2451 | void noinline |
|
|
2452 | ev_periodic_again (EV_P_ ev_periodic *w) |
|
|
2453 | { |
|
|
2454 | /* TODO: use adjustheap and recalculation */ |
|
|
2455 | ev_periodic_stop (EV_A_ w); |
|
|
2456 | ev_periodic_start (EV_A_ w); |
|
|
2457 | } |
|
|
2458 | #endif |
|
|
2459 | |
|
|
2460 | #ifndef SA_RESTART |
|
|
2461 | # define SA_RESTART 0 |
|
|
2462 | #endif |
|
|
2463 | |
|
|
2464 | void noinline |
879 | ev_signal_start (struct ev_signal *w) |
2465 | ev_signal_start (EV_P_ ev_signal *w) |
880 | { |
2466 | { |
|
|
2467 | #if EV_MULTIPLICITY |
|
|
2468 | assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2469 | #endif |
881 | if (ev_is_active (w)) |
2470 | if (expect_false (ev_is_active (w))) |
882 | return; |
2471 | return; |
883 | |
2472 | |
884 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
2473 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0)); |
885 | |
2474 | |
|
|
2475 | evpipe_init (EV_A); |
|
|
2476 | |
|
|
2477 | EV_FREQUENT_CHECK; |
|
|
2478 | |
|
|
2479 | { |
|
|
2480 | #ifndef _WIN32 |
|
|
2481 | sigset_t full, prev; |
|
|
2482 | sigfillset (&full); |
|
|
2483 | sigprocmask (SIG_SETMASK, &full, &prev); |
|
|
2484 | #endif |
|
|
2485 | |
|
|
2486 | array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero); |
|
|
2487 | |
|
|
2488 | #ifndef _WIN32 |
|
|
2489 | sigprocmask (SIG_SETMASK, &prev, 0); |
|
|
2490 | #endif |
|
|
2491 | } |
|
|
2492 | |
886 | ev_start ((W)w, 1); |
2493 | ev_start (EV_A_ (W)w, 1); |
887 | array_needsize (signals, signalmax, w->signum, signals_init); |
|
|
888 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
2494 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
889 | |
2495 | |
890 | if (!w->next) |
2496 | if (!((WL)w)->next) |
891 | { |
2497 | { |
|
|
2498 | #if _WIN32 |
|
|
2499 | signal (w->signum, ev_sighandler); |
|
|
2500 | #else |
892 | struct sigaction sa; |
2501 | struct sigaction sa; |
893 | sa.sa_handler = sighandler; |
2502 | sa.sa_handler = ev_sighandler; |
894 | sigfillset (&sa.sa_mask); |
2503 | sigfillset (&sa.sa_mask); |
895 | sa.sa_flags = 0; |
2504 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
896 | sigaction (w->signum, &sa, 0); |
2505 | sigaction (w->signum, &sa, 0); |
|
|
2506 | #endif |
897 | } |
2507 | } |
898 | } |
|
|
899 | |
2508 | |
900 | void |
2509 | EV_FREQUENT_CHECK; |
|
|
2510 | } |
|
|
2511 | |
|
|
2512 | void noinline |
901 | ev_signal_stop (struct ev_signal *w) |
2513 | ev_signal_stop (EV_P_ ev_signal *w) |
902 | { |
2514 | { |
903 | ev_clear_pending ((W)w); |
2515 | clear_pending (EV_A_ (W)w); |
904 | if (!ev_is_active (w)) |
2516 | if (expect_false (!ev_is_active (w))) |
905 | return; |
2517 | return; |
906 | |
2518 | |
|
|
2519 | EV_FREQUENT_CHECK; |
|
|
2520 | |
907 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
2521 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
908 | ev_stop ((W)w); |
2522 | ev_stop (EV_A_ (W)w); |
909 | |
2523 | |
910 | if (!signals [w->signum - 1].head) |
2524 | if (!signals [w->signum - 1].head) |
911 | signal (w->signum, SIG_DFL); |
2525 | signal (w->signum, SIG_DFL); |
912 | } |
|
|
913 | |
2526 | |
|
|
2527 | EV_FREQUENT_CHECK; |
|
|
2528 | } |
|
|
2529 | |
914 | void |
2530 | void |
915 | ev_idle_start (struct ev_idle *w) |
2531 | ev_child_start (EV_P_ ev_child *w) |
916 | { |
2532 | { |
|
|
2533 | #if EV_MULTIPLICITY |
|
|
2534 | assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2535 | #endif |
917 | if (ev_is_active (w)) |
2536 | if (expect_false (ev_is_active (w))) |
918 | return; |
2537 | return; |
919 | |
2538 | |
920 | ev_start ((W)w, ++idlecnt); |
2539 | EV_FREQUENT_CHECK; |
921 | array_needsize (idles, idlemax, idlecnt, ); |
|
|
922 | idles [idlecnt - 1] = w; |
|
|
923 | } |
|
|
924 | |
2540 | |
|
|
2541 | ev_start (EV_A_ (W)w, 1); |
|
|
2542 | wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
|
|
2543 | |
|
|
2544 | EV_FREQUENT_CHECK; |
|
|
2545 | } |
|
|
2546 | |
925 | void |
2547 | void |
926 | ev_idle_stop (struct ev_idle *w) |
2548 | ev_child_stop (EV_P_ ev_child *w) |
927 | { |
2549 | { |
928 | ev_clear_pending ((W)w); |
2550 | clear_pending (EV_A_ (W)w); |
929 | if (ev_is_active (w)) |
2551 | if (expect_false (!ev_is_active (w))) |
930 | return; |
2552 | return; |
931 | |
2553 | |
932 | idles [w->active - 1] = idles [--idlecnt]; |
2554 | EV_FREQUENT_CHECK; |
|
|
2555 | |
|
|
2556 | wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
933 | ev_stop ((W)w); |
2557 | ev_stop (EV_A_ (W)w); |
934 | } |
|
|
935 | |
2558 | |
936 | void |
2559 | EV_FREQUENT_CHECK; |
937 | ev_prepare_start (struct ev_prepare *w) |
2560 | } |
|
|
2561 | |
|
|
2562 | #if EV_STAT_ENABLE |
|
|
2563 | |
|
|
2564 | # ifdef _WIN32 |
|
|
2565 | # undef lstat |
|
|
2566 | # define lstat(a,b) _stati64 (a,b) |
|
|
2567 | # endif |
|
|
2568 | |
|
|
2569 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
2570 | #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
|
|
2571 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
2572 | |
|
|
2573 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
2574 | |
|
|
2575 | #if EV_USE_INOTIFY |
|
|
2576 | # define EV_INOTIFY_BUFSIZE 8192 |
|
|
2577 | |
|
|
2578 | static void noinline |
|
|
2579 | infy_add (EV_P_ ev_stat *w) |
938 | { |
2580 | { |
939 | if (ev_is_active (w)) |
2581 | 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); |
|
|
2582 | |
|
|
2583 | if (w->wd < 0) |
|
|
2584 | { |
|
|
2585 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
2586 | ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
|
|
2587 | |
|
|
2588 | /* monitor some parent directory for speedup hints */ |
|
|
2589 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
|
|
2590 | /* but an efficiency issue only */ |
|
|
2591 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
|
|
2592 | { |
|
|
2593 | char path [4096]; |
|
|
2594 | strcpy (path, w->path); |
|
|
2595 | |
|
|
2596 | do |
|
|
2597 | { |
|
|
2598 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
|
|
2599 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
|
|
2600 | |
|
|
2601 | char *pend = strrchr (path, '/'); |
|
|
2602 | |
|
|
2603 | if (!pend || pend == path) |
|
|
2604 | break; |
|
|
2605 | |
|
|
2606 | *pend = 0; |
|
|
2607 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
2608 | } |
|
|
2609 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
2610 | } |
|
|
2611 | } |
|
|
2612 | |
|
|
2613 | if (w->wd >= 0) |
|
|
2614 | { |
|
|
2615 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
2616 | |
|
|
2617 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
2618 | /* unless the filesystem it known to be local, we therefore still poll */ |
|
|
2619 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
2620 | struct statfs sfs; |
|
|
2621 | |
|
|
2622 | if (fs_2625 && !statfs (w->path, &sfs)) |
|
|
2623 | if (sfs.f_type == 0x1373 /* devfs */ |
|
|
2624 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
2625 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
2626 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
2627 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
2628 | || sfs.f_type == 0x58465342 /* xfs */) |
|
|
2629 | return; |
|
|
2630 | |
|
|
2631 | w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2632 | ev_timer_again (EV_A_ &w->timer); |
|
|
2633 | } |
|
|
2634 | } |
|
|
2635 | |
|
|
2636 | static void noinline |
|
|
2637 | infy_del (EV_P_ ev_stat *w) |
|
|
2638 | { |
|
|
2639 | int slot; |
|
|
2640 | int wd = w->wd; |
|
|
2641 | |
|
|
2642 | if (wd < 0) |
940 | return; |
2643 | return; |
941 | |
2644 | |
|
|
2645 | w->wd = -2; |
|
|
2646 | slot = wd & (EV_INOTIFY_HASHSIZE - 1); |
|
|
2647 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
2648 | |
|
|
2649 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
2650 | inotify_rm_watch (fs_fd, wd); |
|
|
2651 | } |
|
|
2652 | |
|
|
2653 | static void noinline |
|
|
2654 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
2655 | { |
|
|
2656 | if (slot < 0) |
|
|
2657 | /* overflow, need to check for all hash slots */ |
|
|
2658 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2659 | infy_wd (EV_A_ slot, wd, ev); |
|
|
2660 | else |
|
|
2661 | { |
|
|
2662 | WL w_; |
|
|
2663 | |
|
|
2664 | for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) |
|
|
2665 | { |
|
|
2666 | ev_stat *w = (ev_stat *)w_; |
|
|
2667 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
2668 | |
|
|
2669 | if (w->wd == wd || wd == -1) |
|
|
2670 | { |
|
|
2671 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
2672 | { |
|
|
2673 | wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
2674 | w->wd = -1; |
|
|
2675 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2676 | } |
|
|
2677 | |
|
|
2678 | stat_timer_cb (EV_A_ &w->timer, 0); |
|
|
2679 | } |
|
|
2680 | } |
|
|
2681 | } |
|
|
2682 | } |
|
|
2683 | |
|
|
2684 | static void |
|
|
2685 | infy_cb (EV_P_ ev_io *w, int revents) |
|
|
2686 | { |
|
|
2687 | char buf [EV_INOTIFY_BUFSIZE]; |
|
|
2688 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
2689 | int ofs; |
|
|
2690 | int len = read (fs_fd, buf, sizeof (buf)); |
|
|
2691 | |
|
|
2692 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
|
|
2693 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
2694 | } |
|
|
2695 | |
|
|
2696 | inline_size void |
|
|
2697 | check_2625 (EV_P) |
|
|
2698 | { |
|
|
2699 | /* kernels < 2.6.25 are borked |
|
|
2700 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
|
|
2701 | */ |
|
|
2702 | struct utsname buf; |
|
|
2703 | int major, minor, micro; |
|
|
2704 | |
|
|
2705 | if (uname (&buf)) |
|
|
2706 | return; |
|
|
2707 | |
|
|
2708 | if (sscanf (buf.release, "%d.%d.%d", &major, &minor, µ) != 3) |
|
|
2709 | return; |
|
|
2710 | |
|
|
2711 | if (major < 2 |
|
|
2712 | || (major == 2 && minor < 6) |
|
|
2713 | || (major == 2 && minor == 6 && micro < 25)) |
|
|
2714 | return; |
|
|
2715 | |
|
|
2716 | fs_2625 = 1; |
|
|
2717 | } |
|
|
2718 | |
|
|
2719 | inline_size void |
|
|
2720 | infy_init (EV_P) |
|
|
2721 | { |
|
|
2722 | if (fs_fd != -2) |
|
|
2723 | return; |
|
|
2724 | |
|
|
2725 | fs_fd = -1; |
|
|
2726 | |
|
|
2727 | check_2625 (EV_A); |
|
|
2728 | |
|
|
2729 | fs_fd = inotify_init (); |
|
|
2730 | |
|
|
2731 | if (fs_fd >= 0) |
|
|
2732 | { |
|
|
2733 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
2734 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
2735 | ev_io_start (EV_A_ &fs_w); |
|
|
2736 | } |
|
|
2737 | } |
|
|
2738 | |
|
|
2739 | inline_size void |
|
|
2740 | infy_fork (EV_P) |
|
|
2741 | { |
|
|
2742 | int slot; |
|
|
2743 | |
|
|
2744 | if (fs_fd < 0) |
|
|
2745 | return; |
|
|
2746 | |
|
|
2747 | close (fs_fd); |
|
|
2748 | fs_fd = inotify_init (); |
|
|
2749 | |
|
|
2750 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2751 | { |
|
|
2752 | WL w_ = fs_hash [slot].head; |
|
|
2753 | fs_hash [slot].head = 0; |
|
|
2754 | |
|
|
2755 | while (w_) |
|
|
2756 | { |
|
|
2757 | ev_stat *w = (ev_stat *)w_; |
|
|
2758 | w_ = w_->next; /* lets us add this watcher */ |
|
|
2759 | |
|
|
2760 | w->wd = -1; |
|
|
2761 | |
|
|
2762 | if (fs_fd >= 0) |
|
|
2763 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2764 | else |
|
|
2765 | ev_timer_again (EV_A_ &w->timer); |
|
|
2766 | } |
|
|
2767 | } |
|
|
2768 | } |
|
|
2769 | |
|
|
2770 | #endif |
|
|
2771 | |
|
|
2772 | #ifdef _WIN32 |
|
|
2773 | # define EV_LSTAT(p,b) _stati64 (p, b) |
|
|
2774 | #else |
|
|
2775 | # define EV_LSTAT(p,b) lstat (p, b) |
|
|
2776 | #endif |
|
|
2777 | |
|
|
2778 | void |
|
|
2779 | ev_stat_stat (EV_P_ ev_stat *w) |
|
|
2780 | { |
|
|
2781 | if (lstat (w->path, &w->attr) < 0) |
|
|
2782 | w->attr.st_nlink = 0; |
|
|
2783 | else if (!w->attr.st_nlink) |
|
|
2784 | w->attr.st_nlink = 1; |
|
|
2785 | } |
|
|
2786 | |
|
|
2787 | static void noinline |
|
|
2788 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
2789 | { |
|
|
2790 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
2791 | |
|
|
2792 | /* we copy this here each the time so that */ |
|
|
2793 | /* prev has the old value when the callback gets invoked */ |
|
|
2794 | w->prev = w->attr; |
|
|
2795 | ev_stat_stat (EV_A_ w); |
|
|
2796 | |
|
|
2797 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
2798 | if ( |
|
|
2799 | w->prev.st_dev != w->attr.st_dev |
|
|
2800 | || w->prev.st_ino != w->attr.st_ino |
|
|
2801 | || w->prev.st_mode != w->attr.st_mode |
|
|
2802 | || w->prev.st_nlink != w->attr.st_nlink |
|
|
2803 | || w->prev.st_uid != w->attr.st_uid |
|
|
2804 | || w->prev.st_gid != w->attr.st_gid |
|
|
2805 | || w->prev.st_rdev != w->attr.st_rdev |
|
|
2806 | || w->prev.st_size != w->attr.st_size |
|
|
2807 | || w->prev.st_atime != w->attr.st_atime |
|
|
2808 | || w->prev.st_mtime != w->attr.st_mtime |
|
|
2809 | || w->prev.st_ctime != w->attr.st_ctime |
|
|
2810 | ) { |
|
|
2811 | #if EV_USE_INOTIFY |
|
|
2812 | if (fs_fd >= 0) |
|
|
2813 | { |
|
|
2814 | infy_del (EV_A_ w); |
|
|
2815 | infy_add (EV_A_ w); |
|
|
2816 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
2817 | } |
|
|
2818 | #endif |
|
|
2819 | |
|
|
2820 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
2821 | } |
|
|
2822 | } |
|
|
2823 | |
|
|
2824 | void |
|
|
2825 | ev_stat_start (EV_P_ ev_stat *w) |
|
|
2826 | { |
|
|
2827 | if (expect_false (ev_is_active (w))) |
|
|
2828 | return; |
|
|
2829 | |
|
|
2830 | ev_stat_stat (EV_A_ w); |
|
|
2831 | |
|
|
2832 | if (w->interval < MIN_STAT_INTERVAL && w->interval) |
|
|
2833 | w->interval = MIN_STAT_INTERVAL; |
|
|
2834 | |
|
|
2835 | ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL); |
|
|
2836 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
2837 | |
|
|
2838 | #if EV_USE_INOTIFY |
|
|
2839 | infy_init (EV_A); |
|
|
2840 | |
|
|
2841 | if (fs_fd >= 0) |
|
|
2842 | infy_add (EV_A_ w); |
|
|
2843 | else |
|
|
2844 | #endif |
|
|
2845 | ev_timer_again (EV_A_ &w->timer); |
|
|
2846 | |
|
|
2847 | ev_start (EV_A_ (W)w, 1); |
|
|
2848 | |
|
|
2849 | EV_FREQUENT_CHECK; |
|
|
2850 | } |
|
|
2851 | |
|
|
2852 | void |
|
|
2853 | ev_stat_stop (EV_P_ ev_stat *w) |
|
|
2854 | { |
|
|
2855 | clear_pending (EV_A_ (W)w); |
|
|
2856 | if (expect_false (!ev_is_active (w))) |
|
|
2857 | return; |
|
|
2858 | |
|
|
2859 | EV_FREQUENT_CHECK; |
|
|
2860 | |
|
|
2861 | #if EV_USE_INOTIFY |
|
|
2862 | infy_del (EV_A_ w); |
|
|
2863 | #endif |
|
|
2864 | ev_timer_stop (EV_A_ &w->timer); |
|
|
2865 | |
|
|
2866 | ev_stop (EV_A_ (W)w); |
|
|
2867 | |
|
|
2868 | EV_FREQUENT_CHECK; |
|
|
2869 | } |
|
|
2870 | #endif |
|
|
2871 | |
|
|
2872 | #if EV_IDLE_ENABLE |
|
|
2873 | void |
|
|
2874 | ev_idle_start (EV_P_ ev_idle *w) |
|
|
2875 | { |
|
|
2876 | if (expect_false (ev_is_active (w))) |
|
|
2877 | return; |
|
|
2878 | |
|
|
2879 | pri_adjust (EV_A_ (W)w); |
|
|
2880 | |
|
|
2881 | EV_FREQUENT_CHECK; |
|
|
2882 | |
|
|
2883 | { |
|
|
2884 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
2885 | |
|
|
2886 | ++idleall; |
|
|
2887 | ev_start (EV_A_ (W)w, active); |
|
|
2888 | |
|
|
2889 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
|
|
2890 | idles [ABSPRI (w)][active - 1] = w; |
|
|
2891 | } |
|
|
2892 | |
|
|
2893 | EV_FREQUENT_CHECK; |
|
|
2894 | } |
|
|
2895 | |
|
|
2896 | void |
|
|
2897 | ev_idle_stop (EV_P_ ev_idle *w) |
|
|
2898 | { |
|
|
2899 | clear_pending (EV_A_ (W)w); |
|
|
2900 | if (expect_false (!ev_is_active (w))) |
|
|
2901 | return; |
|
|
2902 | |
|
|
2903 | EV_FREQUENT_CHECK; |
|
|
2904 | |
|
|
2905 | { |
|
|
2906 | int active = ev_active (w); |
|
|
2907 | |
|
|
2908 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
2909 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
|
|
2910 | |
|
|
2911 | ev_stop (EV_A_ (W)w); |
|
|
2912 | --idleall; |
|
|
2913 | } |
|
|
2914 | |
|
|
2915 | EV_FREQUENT_CHECK; |
|
|
2916 | } |
|
|
2917 | #endif |
|
|
2918 | |
|
|
2919 | void |
|
|
2920 | ev_prepare_start (EV_P_ ev_prepare *w) |
|
|
2921 | { |
|
|
2922 | if (expect_false (ev_is_active (w))) |
|
|
2923 | return; |
|
|
2924 | |
|
|
2925 | EV_FREQUENT_CHECK; |
|
|
2926 | |
942 | ev_start ((W)w, ++preparecnt); |
2927 | ev_start (EV_A_ (W)w, ++preparecnt); |
943 | array_needsize (prepares, preparemax, preparecnt, ); |
2928 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
944 | prepares [preparecnt - 1] = w; |
2929 | prepares [preparecnt - 1] = w; |
945 | } |
|
|
946 | |
2930 | |
|
|
2931 | EV_FREQUENT_CHECK; |
|
|
2932 | } |
|
|
2933 | |
947 | void |
2934 | void |
948 | ev_prepare_stop (struct ev_prepare *w) |
2935 | ev_prepare_stop (EV_P_ ev_prepare *w) |
949 | { |
2936 | { |
950 | ev_clear_pending ((W)w); |
2937 | clear_pending (EV_A_ (W)w); |
951 | if (ev_is_active (w)) |
2938 | if (expect_false (!ev_is_active (w))) |
952 | return; |
2939 | return; |
953 | |
2940 | |
|
|
2941 | EV_FREQUENT_CHECK; |
|
|
2942 | |
|
|
2943 | { |
|
|
2944 | int active = ev_active (w); |
|
|
2945 | |
954 | prepares [w->active - 1] = prepares [--preparecnt]; |
2946 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
2947 | ev_active (prepares [active - 1]) = active; |
|
|
2948 | } |
|
|
2949 | |
955 | ev_stop ((W)w); |
2950 | ev_stop (EV_A_ (W)w); |
956 | } |
|
|
957 | |
2951 | |
|
|
2952 | EV_FREQUENT_CHECK; |
|
|
2953 | } |
|
|
2954 | |
958 | void |
2955 | void |
959 | ev_check_start (struct ev_check *w) |
2956 | ev_check_start (EV_P_ ev_check *w) |
960 | { |
2957 | { |
961 | if (ev_is_active (w)) |
2958 | if (expect_false (ev_is_active (w))) |
962 | return; |
2959 | return; |
963 | |
2960 | |
|
|
2961 | EV_FREQUENT_CHECK; |
|
|
2962 | |
964 | ev_start ((W)w, ++checkcnt); |
2963 | ev_start (EV_A_ (W)w, ++checkcnt); |
965 | array_needsize (checks, checkmax, checkcnt, ); |
2964 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
966 | checks [checkcnt - 1] = w; |
2965 | checks [checkcnt - 1] = w; |
967 | } |
|
|
968 | |
2966 | |
|
|
2967 | EV_FREQUENT_CHECK; |
|
|
2968 | } |
|
|
2969 | |
969 | void |
2970 | void |
970 | ev_check_stop (struct ev_check *w) |
2971 | ev_check_stop (EV_P_ ev_check *w) |
971 | { |
2972 | { |
972 | ev_clear_pending ((W)w); |
2973 | clear_pending (EV_A_ (W)w); |
973 | if (ev_is_active (w)) |
2974 | if (expect_false (!ev_is_active (w))) |
974 | return; |
2975 | return; |
975 | |
2976 | |
|
|
2977 | EV_FREQUENT_CHECK; |
|
|
2978 | |
|
|
2979 | { |
|
|
2980 | int active = ev_active (w); |
|
|
2981 | |
976 | checks [w->active - 1] = checks [--checkcnt]; |
2982 | checks [active - 1] = checks [--checkcnt]; |
|
|
2983 | ev_active (checks [active - 1]) = active; |
|
|
2984 | } |
|
|
2985 | |
977 | ev_stop ((W)w); |
2986 | ev_stop (EV_A_ (W)w); |
978 | } |
|
|
979 | |
2987 | |
980 | void |
2988 | EV_FREQUENT_CHECK; |
981 | ev_child_start (struct ev_child *w) |
2989 | } |
|
|
2990 | |
|
|
2991 | #if EV_EMBED_ENABLE |
|
|
2992 | void noinline |
|
|
2993 | ev_embed_sweep (EV_P_ ev_embed *w) |
982 | { |
2994 | { |
|
|
2995 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
2996 | } |
|
|
2997 | |
|
|
2998 | static void |
|
|
2999 | embed_io_cb (EV_P_ ev_io *io, int revents) |
|
|
3000 | { |
|
|
3001 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
|
|
3002 | |
983 | if (ev_is_active (w)) |
3003 | if (ev_cb (w)) |
|
|
3004 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
3005 | else |
|
|
3006 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
3007 | } |
|
|
3008 | |
|
|
3009 | static void |
|
|
3010 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
3011 | { |
|
|
3012 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
3013 | |
|
|
3014 | { |
|
|
3015 | struct ev_loop *loop = w->other; |
|
|
3016 | |
|
|
3017 | while (fdchangecnt) |
|
|
3018 | { |
|
|
3019 | fd_reify (EV_A); |
|
|
3020 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
3021 | } |
|
|
3022 | } |
|
|
3023 | } |
|
|
3024 | |
|
|
3025 | static void |
|
|
3026 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
|
|
3027 | { |
|
|
3028 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
|
|
3029 | |
|
|
3030 | ev_embed_stop (EV_A_ w); |
|
|
3031 | |
|
|
3032 | { |
|
|
3033 | struct ev_loop *loop = w->other; |
|
|
3034 | |
|
|
3035 | ev_loop_fork (EV_A); |
|
|
3036 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
3037 | } |
|
|
3038 | |
|
|
3039 | ev_embed_start (EV_A_ w); |
|
|
3040 | } |
|
|
3041 | |
|
|
3042 | #if 0 |
|
|
3043 | static void |
|
|
3044 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
3045 | { |
|
|
3046 | ev_idle_stop (EV_A_ idle); |
|
|
3047 | } |
|
|
3048 | #endif |
|
|
3049 | |
|
|
3050 | void |
|
|
3051 | ev_embed_start (EV_P_ ev_embed *w) |
|
|
3052 | { |
|
|
3053 | if (expect_false (ev_is_active (w))) |
984 | return; |
3054 | return; |
985 | |
3055 | |
|
|
3056 | { |
|
|
3057 | struct ev_loop *loop = w->other; |
|
|
3058 | assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
3059 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
|
|
3060 | } |
|
|
3061 | |
|
|
3062 | EV_FREQUENT_CHECK; |
|
|
3063 | |
|
|
3064 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
3065 | ev_io_start (EV_A_ &w->io); |
|
|
3066 | |
|
|
3067 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
3068 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
3069 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
3070 | |
|
|
3071 | ev_fork_init (&w->fork, embed_fork_cb); |
|
|
3072 | ev_fork_start (EV_A_ &w->fork); |
|
|
3073 | |
|
|
3074 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
3075 | |
986 | ev_start ((W)w, 1); |
3076 | ev_start (EV_A_ (W)w, 1); |
987 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
988 | } |
|
|
989 | |
3077 | |
|
|
3078 | EV_FREQUENT_CHECK; |
|
|
3079 | } |
|
|
3080 | |
990 | void |
3081 | void |
991 | ev_child_stop (struct ev_child *w) |
3082 | ev_embed_stop (EV_P_ ev_embed *w) |
992 | { |
3083 | { |
993 | ev_clear_pending ((W)w); |
3084 | clear_pending (EV_A_ (W)w); |
994 | if (ev_is_active (w)) |
3085 | if (expect_false (!ev_is_active (w))) |
995 | return; |
3086 | return; |
996 | |
3087 | |
997 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
3088 | EV_FREQUENT_CHECK; |
|
|
3089 | |
|
|
3090 | ev_io_stop (EV_A_ &w->io); |
|
|
3091 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
3092 | ev_fork_stop (EV_A_ &w->fork); |
|
|
3093 | |
|
|
3094 | EV_FREQUENT_CHECK; |
|
|
3095 | } |
|
|
3096 | #endif |
|
|
3097 | |
|
|
3098 | #if EV_FORK_ENABLE |
|
|
3099 | void |
|
|
3100 | ev_fork_start (EV_P_ ev_fork *w) |
|
|
3101 | { |
|
|
3102 | if (expect_false (ev_is_active (w))) |
|
|
3103 | return; |
|
|
3104 | |
|
|
3105 | EV_FREQUENT_CHECK; |
|
|
3106 | |
|
|
3107 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
3108 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
3109 | forks [forkcnt - 1] = w; |
|
|
3110 | |
|
|
3111 | EV_FREQUENT_CHECK; |
|
|
3112 | } |
|
|
3113 | |
|
|
3114 | void |
|
|
3115 | ev_fork_stop (EV_P_ ev_fork *w) |
|
|
3116 | { |
|
|
3117 | clear_pending (EV_A_ (W)w); |
|
|
3118 | if (expect_false (!ev_is_active (w))) |
|
|
3119 | return; |
|
|
3120 | |
|
|
3121 | EV_FREQUENT_CHECK; |
|
|
3122 | |
|
|
3123 | { |
|
|
3124 | int active = ev_active (w); |
|
|
3125 | |
|
|
3126 | forks [active - 1] = forks [--forkcnt]; |
|
|
3127 | ev_active (forks [active - 1]) = active; |
|
|
3128 | } |
|
|
3129 | |
998 | ev_stop ((W)w); |
3130 | ev_stop (EV_A_ (W)w); |
|
|
3131 | |
|
|
3132 | EV_FREQUENT_CHECK; |
999 | } |
3133 | } |
|
|
3134 | #endif |
|
|
3135 | |
|
|
3136 | #if EV_ASYNC_ENABLE |
|
|
3137 | void |
|
|
3138 | ev_async_start (EV_P_ ev_async *w) |
|
|
3139 | { |
|
|
3140 | if (expect_false (ev_is_active (w))) |
|
|
3141 | return; |
|
|
3142 | |
|
|
3143 | evpipe_init (EV_A); |
|
|
3144 | |
|
|
3145 | EV_FREQUENT_CHECK; |
|
|
3146 | |
|
|
3147 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
3148 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
3149 | asyncs [asynccnt - 1] = w; |
|
|
3150 | |
|
|
3151 | EV_FREQUENT_CHECK; |
|
|
3152 | } |
|
|
3153 | |
|
|
3154 | void |
|
|
3155 | ev_async_stop (EV_P_ ev_async *w) |
|
|
3156 | { |
|
|
3157 | clear_pending (EV_A_ (W)w); |
|
|
3158 | if (expect_false (!ev_is_active (w))) |
|
|
3159 | return; |
|
|
3160 | |
|
|
3161 | EV_FREQUENT_CHECK; |
|
|
3162 | |
|
|
3163 | { |
|
|
3164 | int active = ev_active (w); |
|
|
3165 | |
|
|
3166 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
3167 | ev_active (asyncs [active - 1]) = active; |
|
|
3168 | } |
|
|
3169 | |
|
|
3170 | ev_stop (EV_A_ (W)w); |
|
|
3171 | |
|
|
3172 | EV_FREQUENT_CHECK; |
|
|
3173 | } |
|
|
3174 | |
|
|
3175 | void |
|
|
3176 | ev_async_send (EV_P_ ev_async *w) |
|
|
3177 | { |
|
|
3178 | w->sent = 1; |
|
|
3179 | evpipe_write (EV_A_ &gotasync); |
|
|
3180 | } |
|
|
3181 | #endif |
1000 | |
3182 | |
1001 | /*****************************************************************************/ |
3183 | /*****************************************************************************/ |
1002 | |
3184 | |
1003 | struct ev_once |
3185 | struct ev_once |
1004 | { |
3186 | { |
1005 | struct ev_io io; |
3187 | ev_io io; |
1006 | struct ev_timer to; |
3188 | ev_timer to; |
1007 | void (*cb)(int revents, void *arg); |
3189 | void (*cb)(int revents, void *arg); |
1008 | void *arg; |
3190 | void *arg; |
1009 | }; |
3191 | }; |
1010 | |
3192 | |
1011 | static void |
3193 | static void |
1012 | once_cb (struct ev_once *once, int revents) |
3194 | once_cb (EV_P_ struct ev_once *once, int revents) |
1013 | { |
3195 | { |
1014 | void (*cb)(int revents, void *arg) = once->cb; |
3196 | void (*cb)(int revents, void *arg) = once->cb; |
1015 | void *arg = once->arg; |
3197 | void *arg = once->arg; |
1016 | |
3198 | |
1017 | ev_io_stop (&once->io); |
3199 | ev_io_stop (EV_A_ &once->io); |
1018 | ev_timer_stop (&once->to); |
3200 | ev_timer_stop (EV_A_ &once->to); |
1019 | free (once); |
3201 | ev_free (once); |
1020 | |
3202 | |
1021 | cb (revents, arg); |
3203 | cb (revents, arg); |
1022 | } |
3204 | } |
1023 | |
3205 | |
1024 | static void |
3206 | static void |
1025 | once_cb_io (struct ev_io *w, int revents) |
3207 | once_cb_io (EV_P_ ev_io *w, int revents) |
1026 | { |
3208 | { |
1027 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
3209 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)); |
|
|
3210 | |
|
|
3211 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to)); |
1028 | } |
3212 | } |
1029 | |
3213 | |
1030 | static void |
3214 | static void |
1031 | once_cb_to (struct ev_timer *w, int revents) |
3215 | once_cb_to (EV_P_ ev_timer *w, int revents) |
1032 | { |
3216 | { |
1033 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
3217 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)); |
1034 | } |
|
|
1035 | |
3218 | |
|
|
3219 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); |
|
|
3220 | } |
|
|
3221 | |
1036 | void |
3222 | void |
1037 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
3223 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1038 | { |
3224 | { |
1039 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
3225 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
1040 | |
3226 | |
1041 | if (!once) |
3227 | if (expect_false (!once)) |
|
|
3228 | { |
1042 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
3229 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
1043 | else |
3230 | return; |
1044 | { |
3231 | } |
|
|
3232 | |
1045 | once->cb = cb; |
3233 | once->cb = cb; |
1046 | once->arg = arg; |
3234 | once->arg = arg; |
1047 | |
3235 | |
1048 | ev_watcher_init (&once->io, once_cb_io); |
3236 | ev_init (&once->io, once_cb_io); |
1049 | if (fd >= 0) |
3237 | if (fd >= 0) |
|
|
3238 | { |
|
|
3239 | ev_io_set (&once->io, fd, events); |
|
|
3240 | ev_io_start (EV_A_ &once->io); |
|
|
3241 | } |
|
|
3242 | |
|
|
3243 | ev_init (&once->to, once_cb_to); |
|
|
3244 | if (timeout >= 0.) |
|
|
3245 | { |
|
|
3246 | ev_timer_set (&once->to, timeout, 0.); |
|
|
3247 | ev_timer_start (EV_A_ &once->to); |
|
|
3248 | } |
|
|
3249 | } |
|
|
3250 | |
|
|
3251 | /*****************************************************************************/ |
|
|
3252 | |
|
|
3253 | #if EV_WALK_ENABLE |
|
|
3254 | void |
|
|
3255 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
|
|
3256 | { |
|
|
3257 | int i, j; |
|
|
3258 | ev_watcher_list *wl, *wn; |
|
|
3259 | |
|
|
3260 | if (types & (EV_IO | EV_EMBED)) |
|
|
3261 | for (i = 0; i < anfdmax; ++i) |
|
|
3262 | for (wl = anfds [i].head; wl; ) |
1050 | { |
3263 | { |
1051 | ev_io_set (&once->io, fd, events); |
3264 | wn = wl->next; |
1052 | ev_io_start (&once->io); |
3265 | |
|
|
3266 | #if EV_EMBED_ENABLE |
|
|
3267 | if (ev_cb ((ev_io *)wl) == embed_io_cb) |
|
|
3268 | { |
|
|
3269 | if (types & EV_EMBED) |
|
|
3270 | cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io)); |
|
|
3271 | } |
|
|
3272 | else |
|
|
3273 | #endif |
|
|
3274 | #if EV_USE_INOTIFY |
|
|
3275 | if (ev_cb ((ev_io *)wl) == infy_cb) |
|
|
3276 | ; |
|
|
3277 | else |
|
|
3278 | #endif |
|
|
3279 | if ((ev_io *)wl != &pipe_w) |
|
|
3280 | if (types & EV_IO) |
|
|
3281 | cb (EV_A_ EV_IO, wl); |
|
|
3282 | |
|
|
3283 | wl = wn; |
1053 | } |
3284 | } |
1054 | |
3285 | |
1055 | ev_watcher_init (&once->to, once_cb_to); |
3286 | if (types & (EV_TIMER | EV_STAT)) |
1056 | if (timeout >= 0.) |
3287 | for (i = timercnt + HEAP0; i-- > HEAP0; ) |
|
|
3288 | #if EV_STAT_ENABLE |
|
|
3289 | /*TODO: timer is not always active*/ |
|
|
3290 | if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb) |
1057 | { |
3291 | { |
1058 | ev_timer_set (&once->to, timeout, 0.); |
3292 | if (types & EV_STAT) |
1059 | ev_timer_start (&once->to); |
3293 | cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer)); |
1060 | } |
3294 | } |
1061 | } |
3295 | else |
1062 | } |
3296 | #endif |
|
|
3297 | if (types & EV_TIMER) |
|
|
3298 | cb (EV_A_ EV_TIMER, ANHE_w (timers [i])); |
1063 | |
3299 | |
1064 | /*****************************************************************************/ |
3300 | #if EV_PERIODIC_ENABLE |
|
|
3301 | if (types & EV_PERIODIC) |
|
|
3302 | for (i = periodiccnt + HEAP0; i-- > HEAP0; ) |
|
|
3303 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
|
|
3304 | #endif |
1065 | |
3305 | |
1066 | #if 0 |
3306 | #if EV_IDLE_ENABLE |
|
|
3307 | if (types & EV_IDLE) |
|
|
3308 | for (j = NUMPRI; i--; ) |
|
|
3309 | for (i = idlecnt [j]; i--; ) |
|
|
3310 | cb (EV_A_ EV_IDLE, idles [j][i]); |
|
|
3311 | #endif |
1067 | |
3312 | |
1068 | struct ev_io wio; |
3313 | #if EV_FORK_ENABLE |
|
|
3314 | if (types & EV_FORK) |
|
|
3315 | for (i = forkcnt; i--; ) |
|
|
3316 | if (ev_cb (forks [i]) != embed_fork_cb) |
|
|
3317 | cb (EV_A_ EV_FORK, forks [i]); |
|
|
3318 | #endif |
1069 | |
3319 | |
1070 | static void |
3320 | #if EV_ASYNC_ENABLE |
1071 | sin_cb (struct ev_io *w, int revents) |
3321 | if (types & EV_ASYNC) |
1072 | { |
3322 | for (i = asynccnt; i--; ) |
1073 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
3323 | cb (EV_A_ EV_ASYNC, asyncs [i]); |
1074 | } |
3324 | #endif |
1075 | |
3325 | |
1076 | static void |
3326 | if (types & EV_PREPARE) |
1077 | ocb (struct ev_timer *w, int revents) |
3327 | for (i = preparecnt; i--; ) |
1078 | { |
3328 | #if EV_EMBED_ENABLE |
1079 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
3329 | if (ev_cb (prepares [i]) != embed_prepare_cb) |
1080 | ev_timer_stop (w); |
3330 | #endif |
1081 | ev_timer_start (w); |
3331 | cb (EV_A_ EV_PREPARE, prepares [i]); |
1082 | } |
|
|
1083 | |
3332 | |
1084 | static void |
3333 | if (types & EV_CHECK) |
1085 | scb (struct ev_signal *w, int revents) |
3334 | for (i = checkcnt; i--; ) |
1086 | { |
3335 | cb (EV_A_ EV_CHECK, checks [i]); |
1087 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
1088 | ev_io_stop (&wio); |
|
|
1089 | ev_io_start (&wio); |
|
|
1090 | } |
|
|
1091 | |
3336 | |
1092 | static void |
3337 | if (types & EV_SIGNAL) |
1093 | gcb (struct ev_signal *w, int revents) |
|
|
1094 | { |
|
|
1095 | fprintf (stderr, "generic %x\n", revents); |
|
|
1096 | |
|
|
1097 | } |
|
|
1098 | |
|
|
1099 | int main (void) |
|
|
1100 | { |
|
|
1101 | ev_init (0); |
|
|
1102 | |
|
|
1103 | ev_io_init (&wio, sin_cb, 0, EV_READ); |
|
|
1104 | ev_io_start (&wio); |
|
|
1105 | |
|
|
1106 | struct ev_timer t[10000]; |
|
|
1107 | |
|
|
1108 | #if 0 |
|
|
1109 | int i; |
|
|
1110 | for (i = 0; i < 10000; ++i) |
3338 | for (i = 0; i < signalmax; ++i) |
1111 | { |
3339 | for (wl = signals [i].head; wl; ) |
1112 | struct ev_timer *w = t + i; |
3340 | { |
1113 | ev_watcher_init (w, ocb, i); |
3341 | wn = wl->next; |
1114 | ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
3342 | cb (EV_A_ EV_SIGNAL, wl); |
1115 | ev_timer_start (w); |
3343 | wl = wn; |
1116 | if (drand48 () < 0.5) |
3344 | } |
1117 | ev_timer_stop (w); |
|
|
1118 | } |
|
|
1119 | #endif |
|
|
1120 | |
3345 | |
1121 | struct ev_timer t1; |
3346 | if (types & EV_CHILD) |
1122 | ev_timer_init (&t1, ocb, 5, 10); |
3347 | for (i = EV_PID_HASHSIZE; i--; ) |
1123 | ev_timer_start (&t1); |
3348 | for (wl = childs [i]; wl; ) |
1124 | |
3349 | { |
1125 | struct ev_signal sig; |
3350 | wn = wl->next; |
1126 | ev_signal_init (&sig, scb, SIGQUIT); |
3351 | cb (EV_A_ EV_CHILD, wl); |
1127 | ev_signal_start (&sig); |
3352 | wl = wn; |
1128 | |
3353 | } |
1129 | struct ev_check cw; |
3354 | /* EV_STAT 0x00001000 /* stat data changed */ |
1130 | ev_check_init (&cw, gcb); |
3355 | /* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
1131 | ev_check_start (&cw); |
|
|
1132 | |
|
|
1133 | struct ev_idle iw; |
|
|
1134 | ev_idle_init (&iw, gcb); |
|
|
1135 | ev_idle_start (&iw); |
|
|
1136 | |
|
|
1137 | ev_loop (0); |
|
|
1138 | |
|
|
1139 | return 0; |
|
|
1140 | } |
3356 | } |
1141 | |
|
|
1142 | #endif |
3357 | #endif |
1143 | |
3358 | |
|
|
3359 | #if EV_MULTIPLICITY |
|
|
3360 | #include "ev_wrap.h" |
|
|
3361 | #endif |
1144 | |
3362 | |
|
|
3363 | #ifdef __cplusplus |
|
|
3364 | } |
|
|
3365 | #endif |
1145 | |
3366 | |
1146 | |
|
|