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1 | /* |
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2 | * libev event processing core, watcher management |
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3 | * |
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4 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
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5 | * All rights reserved. |
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6 | * |
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7 | * Redistribution and use in source and binary forms, with or without |
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8 | * modification, are permitted provided that the following conditions are |
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9 | * met: |
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10 | * |
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11 | * * Redistributions of source code must retain the above copyright |
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12 | * notice, this list of conditions and the following disclaimer. |
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13 | * |
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14 | * * Redistributions in binary form must reproduce the above |
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15 | * copyright notice, this list of conditions and the following |
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16 | * disclaimer in the documentation and/or other materials provided |
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17 | * with the distribution. |
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18 | * |
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19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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20 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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21 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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22 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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23 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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24 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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25 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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30 | */ |
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31 | |
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32 | #ifdef __cplusplus |
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33 | extern "C" { |
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34 | #endif |
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35 | |
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36 | #ifndef EV_STANDALONE |
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37 | # include "config.h" |
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38 | |
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39 | # if HAVE_CLOCK_GETTIME |
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40 | # ifndef EV_USE_MONOTONIC |
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41 | # define EV_USE_MONOTONIC 1 |
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42 | # endif |
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43 | # ifndef EV_USE_REALTIME |
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44 | # define EV_USE_REALTIME 1 |
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45 | # endif |
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46 | # else |
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47 | # ifndef EV_USE_MONOTONIC |
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48 | # define EV_USE_MONOTONIC 0 |
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49 | # endif |
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50 | # ifndef EV_USE_REALTIME |
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51 | # define EV_USE_REALTIME 0 |
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52 | # endif |
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53 | # endif |
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54 | |
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55 | # ifndef EV_USE_SELECT |
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56 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
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57 | # define EV_USE_SELECT 1 |
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58 | # else |
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59 | # define EV_USE_SELECT 0 |
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60 | # endif |
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61 | # endif |
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62 | |
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63 | # ifndef EV_USE_POLL |
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64 | # if HAVE_POLL && HAVE_POLL_H |
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65 | # define EV_USE_POLL 1 |
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66 | # else |
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67 | # define EV_USE_POLL 0 |
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68 | # endif |
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69 | # endif |
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70 | |
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71 | # ifndef EV_USE_EPOLL |
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72 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
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73 | # define EV_USE_EPOLL 1 |
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74 | # else |
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75 | # define EV_USE_EPOLL 0 |
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76 | # endif |
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77 | # endif |
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78 | |
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79 | # ifndef EV_USE_KQUEUE |
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80 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
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81 | # define EV_USE_KQUEUE 1 |
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82 | # else |
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83 | # define EV_USE_KQUEUE 0 |
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84 | # endif |
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85 | # endif |
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86 | |
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87 | # ifndef EV_USE_PORT |
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88 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
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89 | # define EV_USE_PORT 1 |
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90 | # else |
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91 | # define EV_USE_PORT 0 |
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92 | # endif |
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93 | # endif |
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94 | |
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95 | #endif |
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96 | |
1 | #include <math.h> |
97 | #include <math.h> |
2 | #include <stdlib.h> |
98 | #include <stdlib.h> |
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99 | #include <fcntl.h> |
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100 | #include <stddef.h> |
3 | |
101 | |
4 | #include <stdio.h> |
102 | #include <stdio.h> |
5 | |
103 | |
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104 | #include <assert.h> |
6 | #include <errno.h> |
105 | #include <errno.h> |
7 | #include <sys/time.h> |
106 | #include <sys/types.h> |
8 | #include <time.h> |
107 | #include <time.h> |
9 | |
108 | |
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109 | #include <signal.h> |
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110 | |
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111 | #ifndef _WIN32 |
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112 | # include <unistd.h> |
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113 | # include <sys/time.h> |
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114 | # include <sys/wait.h> |
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115 | #else |
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116 | # define WIN32_LEAN_AND_MEAN |
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117 | # include <windows.h> |
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118 | # ifndef EV_SELECT_IS_WINSOCKET |
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119 | # define EV_SELECT_IS_WINSOCKET 1 |
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120 | # endif |
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121 | #endif |
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122 | |
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123 | /**/ |
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124 | |
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125 | #ifndef EV_USE_MONOTONIC |
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126 | # define EV_USE_MONOTONIC 0 |
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127 | #endif |
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128 | |
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129 | #ifndef EV_USE_REALTIME |
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130 | # define EV_USE_REALTIME 0 |
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131 | #endif |
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132 | |
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133 | #ifndef EV_USE_SELECT |
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134 | # define EV_USE_SELECT 1 |
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135 | #endif |
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136 | |
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137 | #ifndef EV_USE_POLL |
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138 | # ifdef _WIN32 |
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139 | # define EV_USE_POLL 0 |
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140 | # else |
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141 | # define EV_USE_POLL 1 |
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142 | # endif |
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143 | #endif |
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144 | |
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145 | #ifndef EV_USE_EPOLL |
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146 | # define EV_USE_EPOLL 0 |
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147 | #endif |
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148 | |
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149 | #ifndef EV_USE_KQUEUE |
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150 | # define EV_USE_KQUEUE 0 |
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151 | #endif |
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152 | |
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153 | #ifndef EV_USE_PORT |
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154 | # define EV_USE_PORT 0 |
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155 | #endif |
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156 | |
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157 | /**/ |
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158 | |
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159 | /* darwin simply cannot be helped */ |
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160 | #ifdef __APPLE__ |
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161 | # undef EV_USE_POLL |
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162 | # undef EV_USE_KQUEUE |
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163 | #endif |
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164 | |
10 | #ifdef CLOCK_MONOTONIC |
165 | #ifndef CLOCK_MONOTONIC |
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166 | # undef EV_USE_MONOTONIC |
11 | # define HAVE_MONOTONIC 1 |
167 | # define EV_USE_MONOTONIC 0 |
12 | #endif |
168 | #endif |
13 | |
169 | |
14 | #define HAVE_EPOLL 1 |
170 | #ifndef CLOCK_REALTIME |
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171 | # undef EV_USE_REALTIME |
15 | #define HAVE_REALTIME 1 |
172 | # define EV_USE_REALTIME 0 |
16 | #define HAVE_SELECT 0 |
173 | #endif |
17 | |
174 | |
18 | #define MAX_BLOCKTIME 60. |
175 | #if EV_SELECT_IS_WINSOCKET |
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176 | # include <winsock.h> |
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177 | #endif |
19 | |
178 | |
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179 | /**/ |
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180 | |
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181 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
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182 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
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183 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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184 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ |
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185 | |
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186 | #ifdef EV_H |
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187 | # include EV_H |
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188 | #else |
20 | #include "ev.h" |
189 | # include "ev.h" |
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190 | #endif |
21 | |
191 | |
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192 | #if __GNUC__ >= 3 |
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193 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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194 | # define inline static inline |
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195 | #else |
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196 | # define expect(expr,value) (expr) |
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197 | # define inline static |
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198 | #endif |
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199 | |
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200 | #define expect_false(expr) expect ((expr) != 0, 0) |
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201 | #define expect_true(expr) expect ((expr) != 0, 1) |
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202 | |
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203 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
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204 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
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205 | |
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206 | #define EMPTY0 /* required for microsofts broken pseudo-c compiler */ |
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207 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
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208 | |
22 | struct ev_watcher { |
209 | typedef struct ev_watcher *W; |
23 | EV_WATCHER (ev_watcher); |
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24 | }; |
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25 | |
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26 | struct ev_watcher_list { |
210 | typedef struct ev_watcher_list *WL; |
27 | EV_WATCHER_LIST (ev_watcher_list); |
211 | typedef struct ev_watcher_time *WT; |
28 | }; |
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29 | |
212 | |
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213 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
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214 | |
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215 | #ifdef _WIN32 |
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216 | # include "ev_win32.c" |
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217 | #endif |
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218 | |
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219 | /*****************************************************************************/ |
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220 | |
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221 | static void (*syserr_cb)(const char *msg); |
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222 | |
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223 | void ev_set_syserr_cb (void (*cb)(const char *msg)) |
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224 | { |
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225 | syserr_cb = cb; |
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226 | } |
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227 | |
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228 | static void |
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229 | syserr (const char *msg) |
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230 | { |
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231 | if (!msg) |
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232 | msg = "(libev) system error"; |
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233 | |
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234 | if (syserr_cb) |
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235 | syserr_cb (msg); |
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236 | else |
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237 | { |
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238 | perror (msg); |
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239 | abort (); |
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240 | } |
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241 | } |
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242 | |
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243 | static void *(*alloc)(void *ptr, long size); |
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244 | |
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245 | void ev_set_allocator (void *(*cb)(void *ptr, long size)) |
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246 | { |
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247 | alloc = cb; |
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248 | } |
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249 | |
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250 | static void * |
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251 | ev_realloc (void *ptr, long size) |
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252 | { |
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253 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
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254 | |
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255 | if (!ptr && size) |
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256 | { |
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257 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
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258 | abort (); |
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259 | } |
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260 | |
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261 | return ptr; |
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262 | } |
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263 | |
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264 | #define ev_malloc(size) ev_realloc (0, (size)) |
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265 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
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266 | |
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267 | /*****************************************************************************/ |
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268 | |
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269 | typedef struct |
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270 | { |
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271 | WL head; |
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272 | unsigned char events; |
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273 | unsigned char reify; |
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274 | #if EV_SELECT_IS_WINSOCKET |
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275 | SOCKET handle; |
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276 | #endif |
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277 | } ANFD; |
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278 | |
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279 | typedef struct |
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280 | { |
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281 | W w; |
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282 | int events; |
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283 | } ANPENDING; |
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284 | |
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285 | #if EV_MULTIPLICITY |
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286 | |
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287 | struct ev_loop |
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288 | { |
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289 | ev_tstamp ev_rt_now; |
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290 | #define ev_rt_now ((loop)->ev_rt_now) |
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291 | #define VAR(name,decl) decl; |
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292 | #include "ev_vars.h" |
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293 | #undef VAR |
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294 | }; |
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295 | #include "ev_wrap.h" |
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296 | |
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297 | static struct ev_loop default_loop_struct; |
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298 | struct ev_loop *ev_default_loop_ptr; |
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299 | |
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300 | #else |
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301 | |
30 | ev_tstamp ev_now; |
302 | ev_tstamp ev_rt_now; |
31 | int ev_method; |
303 | #define VAR(name,decl) static decl; |
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304 | #include "ev_vars.h" |
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305 | #undef VAR |
32 | |
306 | |
33 | static int have_monotonic; /* runtime */ |
307 | static int ev_default_loop_ptr; |
34 | |
308 | |
35 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
309 | #endif |
36 | static void (*method_reify)(void); |
310 | |
37 | static void (*method_poll)(ev_tstamp timeout); |
311 | /*****************************************************************************/ |
38 | |
312 | |
39 | ev_tstamp |
313 | ev_tstamp |
40 | ev_time (void) |
314 | ev_time (void) |
41 | { |
315 | { |
42 | #if HAVE_REALTIME |
316 | #if EV_USE_REALTIME |
43 | struct timespec ts; |
317 | struct timespec ts; |
44 | clock_gettime (CLOCK_REALTIME, &ts); |
318 | clock_gettime (CLOCK_REALTIME, &ts); |
45 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
319 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
46 | #else |
320 | #else |
47 | struct timeval tv; |
321 | struct timeval tv; |
48 | gettimeofday (&tv, 0); |
322 | gettimeofday (&tv, 0); |
49 | return tv.tv_sec + tv.tv_usec * 1e-6; |
323 | return tv.tv_sec + tv.tv_usec * 1e-6; |
50 | #endif |
324 | #endif |
51 | } |
325 | } |
52 | |
326 | |
53 | static ev_tstamp |
327 | inline ev_tstamp |
54 | get_clock (void) |
328 | get_clock (void) |
55 | { |
329 | { |
56 | #if HAVE_MONOTONIC |
330 | #if EV_USE_MONOTONIC |
57 | if (have_monotonic) |
331 | if (expect_true (have_monotonic)) |
58 | { |
332 | { |
59 | struct timespec ts; |
333 | struct timespec ts; |
60 | clock_gettime (CLOCK_MONOTONIC, &ts); |
334 | clock_gettime (CLOCK_MONOTONIC, &ts); |
61 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
335 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
62 | } |
336 | } |
63 | #endif |
337 | #endif |
64 | |
338 | |
65 | return ev_time (); |
339 | return ev_time (); |
66 | } |
340 | } |
67 | |
341 | |
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342 | #if EV_MULTIPLICITY |
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343 | ev_tstamp |
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344 | ev_now (EV_P) |
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345 | { |
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346 | return ev_rt_now; |
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347 | } |
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348 | #endif |
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349 | |
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350 | #define array_roundsize(type,n) (((n) | 4) & ~3) |
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351 | |
68 | #define array_needsize(base,cur,cnt,init) \ |
352 | #define array_needsize(type,base,cur,cnt,init) \ |
69 | if ((cnt) > cur) \ |
353 | if (expect_false ((cnt) > cur)) \ |
70 | { \ |
354 | { \ |
71 | int newcnt = cur; \ |
355 | int newcnt = cur; \ |
72 | do \ |
356 | do \ |
73 | { \ |
357 | { \ |
74 | newcnt += (newcnt >> 1) + 16; \ |
358 | newcnt = array_roundsize (type, newcnt << 1); \ |
75 | } \ |
359 | } \ |
76 | while ((cnt) > newcnt); \ |
360 | while ((cnt) > newcnt); \ |
77 | fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\ |
361 | \ |
78 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
362 | base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\ |
79 | init (base + cur, newcnt - cur); \ |
363 | init (base + cur, newcnt - cur); \ |
80 | cur = newcnt; \ |
364 | cur = newcnt; \ |
81 | } |
365 | } |
82 | |
366 | |
83 | typedef struct |
367 | #define array_slim(type,stem) \ |
84 | { |
368 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
85 | struct ev_io *head; |
369 | { \ |
86 | unsigned char wev, rev; /* want, received event set */ |
370 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
87 | } ANFD; |
371 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
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372 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
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373 | } |
88 | |
374 | |
89 | static ANFD *anfds; |
375 | #define array_free(stem, idx) \ |
90 | static int anfdmax; |
376 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
91 | |
377 | |
92 | static int *fdchanges; |
378 | /*****************************************************************************/ |
93 | static int fdchangemax, fdchangecnt; |
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94 | |
379 | |
95 | static void |
380 | static void |
96 | anfds_init (ANFD *base, int count) |
381 | anfds_init (ANFD *base, int count) |
97 | { |
382 | { |
98 | while (count--) |
383 | while (count--) |
99 | { |
384 | { |
100 | base->head = 0; |
385 | base->head = 0; |
101 | base->wev = base->rev = EV_NONE; |
386 | base->events = EV_NONE; |
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387 | base->reify = 0; |
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388 | |
102 | ++base; |
389 | ++base; |
103 | } |
390 | } |
104 | } |
391 | } |
105 | |
392 | |
106 | typedef struct |
393 | void |
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394 | ev_feed_event (EV_P_ void *w, int revents) |
107 | { |
395 | { |
108 | struct ev_watcher *w; |
396 | W w_ = (W)w; |
109 | int events; |
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110 | } ANPENDING; |
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111 | |
397 | |
112 | static ANPENDING *pendings; |
398 | if (expect_false (w_->pending)) |
113 | static int pendingmax, pendingcnt; |
399 | { |
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400 | pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; |
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401 | return; |
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402 | } |
114 | |
403 | |
115 | static void |
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116 | event (struct ev_watcher *w, int events) |
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117 | { |
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118 | w->pending = ++pendingcnt; |
404 | w_->pending = ++pendingcnt [ABSPRI (w_)]; |
119 | array_needsize (pendings, pendingmax, pendingcnt, ); |
405 | array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2); |
120 | pendings [pendingcnt - 1].w = w; |
406 | pendings [ABSPRI (w_)][w_->pending - 1].w = w_; |
121 | pendings [pendingcnt - 1].events = events; |
407 | pendings [ABSPRI (w_)][w_->pending - 1].events = revents; |
122 | } |
408 | } |
123 | |
409 | |
124 | static void |
410 | static void |
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411 | queue_events (EV_P_ W *events, int eventcnt, int type) |
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412 | { |
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413 | int i; |
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414 | |
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415 | for (i = 0; i < eventcnt; ++i) |
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416 | ev_feed_event (EV_A_ events [i], type); |
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417 | } |
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418 | |
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419 | inline void |
125 | fd_event (int fd, int events) |
420 | fd_event (EV_P_ int fd, int revents) |
126 | { |
421 | { |
127 | ANFD *anfd = anfds + fd; |
422 | ANFD *anfd = anfds + fd; |
128 | struct ev_io *w; |
423 | struct ev_io *w; |
129 | |
424 | |
130 | for (w = anfd->head; w; w = w->next) |
425 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
131 | { |
426 | { |
132 | int ev = w->events & events; |
427 | int ev = w->events & revents; |
133 | |
428 | |
134 | if (ev) |
429 | if (ev) |
135 | event ((struct ev_watcher *)w, ev); |
430 | ev_feed_event (EV_A_ (W)w, ev); |
|
|
431 | } |
|
|
432 | } |
|
|
433 | |
|
|
434 | void |
|
|
435 | ev_feed_fd_event (EV_P_ int fd, int revents) |
|
|
436 | { |
|
|
437 | fd_event (EV_A_ fd, revents); |
|
|
438 | } |
|
|
439 | |
|
|
440 | /*****************************************************************************/ |
|
|
441 | |
|
|
442 | inline void |
|
|
443 | fd_reify (EV_P) |
|
|
444 | { |
|
|
445 | int i; |
|
|
446 | |
|
|
447 | for (i = 0; i < fdchangecnt; ++i) |
|
|
448 | { |
|
|
449 | int fd = fdchanges [i]; |
|
|
450 | ANFD *anfd = anfds + fd; |
|
|
451 | struct ev_io *w; |
|
|
452 | |
|
|
453 | int events = 0; |
|
|
454 | |
|
|
455 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
|
|
456 | events |= w->events; |
|
|
457 | |
|
|
458 | #if EV_SELECT_IS_WINSOCKET |
|
|
459 | if (events) |
|
|
460 | { |
|
|
461 | unsigned long argp; |
|
|
462 | anfd->handle = _get_osfhandle (fd); |
|
|
463 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
|
|
464 | } |
|
|
465 | #endif |
|
|
466 | |
|
|
467 | anfd->reify = 0; |
|
|
468 | |
|
|
469 | method_modify (EV_A_ fd, anfd->events, events); |
|
|
470 | anfd->events = events; |
|
|
471 | } |
|
|
472 | |
|
|
473 | fdchangecnt = 0; |
|
|
474 | } |
|
|
475 | |
|
|
476 | static void |
|
|
477 | fd_change (EV_P_ int fd) |
|
|
478 | { |
|
|
479 | if (expect_false (anfds [fd].reify)) |
|
|
480 | return; |
|
|
481 | |
|
|
482 | anfds [fd].reify = 1; |
|
|
483 | |
|
|
484 | ++fdchangecnt; |
|
|
485 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
|
|
486 | fdchanges [fdchangecnt - 1] = fd; |
|
|
487 | } |
|
|
488 | |
|
|
489 | static void |
|
|
490 | fd_kill (EV_P_ int fd) |
|
|
491 | { |
|
|
492 | struct ev_io *w; |
|
|
493 | |
|
|
494 | while ((w = (struct ev_io *)anfds [fd].head)) |
|
|
495 | { |
|
|
496 | ev_io_stop (EV_A_ w); |
|
|
497 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
498 | } |
|
|
499 | } |
|
|
500 | |
|
|
501 | inline int |
|
|
502 | fd_valid (int fd) |
|
|
503 | { |
|
|
504 | #ifdef _WIN32 |
|
|
505 | return _get_osfhandle (fd) != -1; |
|
|
506 | #else |
|
|
507 | return fcntl (fd, F_GETFD) != -1; |
|
|
508 | #endif |
|
|
509 | } |
|
|
510 | |
|
|
511 | /* called on EBADF to verify fds */ |
|
|
512 | static void |
|
|
513 | fd_ebadf (EV_P) |
|
|
514 | { |
|
|
515 | int fd; |
|
|
516 | |
|
|
517 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
518 | if (anfds [fd].events) |
|
|
519 | if (!fd_valid (fd) == -1 && errno == EBADF) |
|
|
520 | fd_kill (EV_A_ fd); |
|
|
521 | } |
|
|
522 | |
|
|
523 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
524 | static void |
|
|
525 | fd_enomem (EV_P) |
|
|
526 | { |
|
|
527 | int fd; |
|
|
528 | |
|
|
529 | for (fd = anfdmax; fd--; ) |
|
|
530 | if (anfds [fd].events) |
|
|
531 | { |
|
|
532 | fd_kill (EV_A_ fd); |
|
|
533 | return; |
136 | } |
534 | } |
137 | } |
535 | } |
138 | |
536 | |
139 | static struct ev_timer **timers; |
537 | /* usually called after fork if method needs to re-arm all fds from scratch */ |
140 | static int timermax, timercnt; |
|
|
141 | |
|
|
142 | static void |
538 | static void |
143 | upheap (int k) |
539 | fd_rearm_all (EV_P) |
144 | { |
540 | { |
145 | struct ev_timer *w = timers [k]; |
541 | int fd; |
146 | |
542 | |
|
|
543 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
544 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
545 | if (anfds [fd].events) |
|
|
546 | { |
|
|
547 | anfds [fd].events = 0; |
|
|
548 | fd_change (EV_A_ fd); |
|
|
549 | } |
|
|
550 | } |
|
|
551 | |
|
|
552 | /*****************************************************************************/ |
|
|
553 | |
|
|
554 | static void |
|
|
555 | upheap (WT *heap, int k) |
|
|
556 | { |
|
|
557 | WT w = heap [k]; |
|
|
558 | |
147 | while (k && timers [k >> 1]->at > w->at) |
559 | while (k && heap [k >> 1]->at > w->at) |
148 | { |
560 | { |
149 | timers [k] = timers [k >> 1]; |
561 | heap [k] = heap [k >> 1]; |
150 | timers [k]->active = k + 1; |
562 | ((W)heap [k])->active = k + 1; |
151 | k >>= 1; |
563 | k >>= 1; |
152 | } |
564 | } |
153 | |
565 | |
154 | timers [k] = w; |
566 | heap [k] = w; |
155 | timers [k]->active = k + 1; |
567 | ((W)heap [k])->active = k + 1; |
156 | |
568 | |
157 | } |
569 | } |
158 | |
570 | |
159 | static void |
571 | static void |
160 | downheap (int k) |
572 | downheap (WT *heap, int N, int k) |
161 | { |
573 | { |
162 | struct ev_timer *w = timers [k]; |
574 | WT w = heap [k]; |
163 | |
575 | |
164 | while (k <= (timercnt >> 1)) |
576 | while (k < (N >> 1)) |
165 | { |
577 | { |
166 | int j = k << 1; |
578 | int j = k << 1; |
167 | |
579 | |
168 | if (j + 1 < timercnt && timers [j]->at > timers [j + 1]->at) |
580 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
169 | ++j; |
581 | ++j; |
170 | |
582 | |
171 | if (w->at <= timers [j]->at) |
583 | if (w->at <= heap [j]->at) |
172 | break; |
584 | break; |
173 | |
585 | |
174 | timers [k] = timers [j]; |
586 | heap [k] = heap [j]; |
175 | timers [k]->active = k; |
587 | ((W)heap [k])->active = k + 1; |
176 | k = j; |
588 | k = j; |
177 | } |
589 | } |
178 | |
590 | |
179 | timers [k] = w; |
591 | heap [k] = w; |
180 | timers [k]->active = k + 1; |
592 | ((W)heap [k])->active = k + 1; |
181 | } |
593 | } |
182 | |
594 | |
183 | static struct ev_signal **signals; |
595 | inline void |
|
|
596 | adjustheap (WT *heap, int N, int k) |
|
|
597 | { |
|
|
598 | upheap (heap, k); |
|
|
599 | downheap (heap, N, k); |
|
|
600 | } |
|
|
601 | |
|
|
602 | /*****************************************************************************/ |
|
|
603 | |
|
|
604 | typedef struct |
|
|
605 | { |
|
|
606 | WL head; |
|
|
607 | sig_atomic_t volatile gotsig; |
|
|
608 | } ANSIG; |
|
|
609 | |
|
|
610 | static ANSIG *signals; |
184 | static int signalmax, signalcnt; |
611 | static int signalmax; |
185 | |
612 | |
|
|
613 | static int sigpipe [2]; |
|
|
614 | static sig_atomic_t volatile gotsig; |
|
|
615 | static struct ev_io sigev; |
|
|
616 | |
186 | static void |
617 | static void |
187 | signals_init (struct ev_signal **base, int count) |
618 | signals_init (ANSIG *base, int count) |
188 | { |
619 | { |
189 | while (count--) |
620 | while (count--) |
190 | *base++ = 0; |
621 | { |
191 | } |
622 | base->head = 0; |
|
|
623 | base->gotsig = 0; |
192 | |
624 | |
|
|
625 | ++base; |
|
|
626 | } |
|
|
627 | } |
|
|
628 | |
|
|
629 | static void |
|
|
630 | sighandler (int signum) |
|
|
631 | { |
|
|
632 | #if _WIN32 |
|
|
633 | signal (signum, sighandler); |
|
|
634 | #endif |
|
|
635 | |
|
|
636 | signals [signum - 1].gotsig = 1; |
|
|
637 | |
|
|
638 | if (!gotsig) |
|
|
639 | { |
|
|
640 | int old_errno = errno; |
|
|
641 | gotsig = 1; |
|
|
642 | write (sigpipe [1], &signum, 1); |
|
|
643 | errno = old_errno; |
|
|
644 | } |
|
|
645 | } |
|
|
646 | |
|
|
647 | void |
|
|
648 | ev_feed_signal_event (EV_P_ int signum) |
|
|
649 | { |
|
|
650 | WL w; |
|
|
651 | |
|
|
652 | #if EV_MULTIPLICITY |
|
|
653 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
654 | #endif |
|
|
655 | |
|
|
656 | --signum; |
|
|
657 | |
|
|
658 | if (signum < 0 || signum >= signalmax) |
|
|
659 | return; |
|
|
660 | |
|
|
661 | signals [signum].gotsig = 0; |
|
|
662 | |
|
|
663 | for (w = signals [signum].head; w; w = w->next) |
|
|
664 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
665 | } |
|
|
666 | |
|
|
667 | static void |
|
|
668 | sigcb (EV_P_ struct ev_io *iow, int revents) |
|
|
669 | { |
|
|
670 | int signum; |
|
|
671 | |
|
|
672 | read (sigpipe [0], &revents, 1); |
|
|
673 | gotsig = 0; |
|
|
674 | |
|
|
675 | for (signum = signalmax; signum--; ) |
|
|
676 | if (signals [signum].gotsig) |
|
|
677 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
678 | } |
|
|
679 | |
|
|
680 | static void |
|
|
681 | fd_intern (int fd) |
|
|
682 | { |
|
|
683 | #ifdef _WIN32 |
|
|
684 | int arg = 1; |
|
|
685 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
686 | #else |
|
|
687 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
688 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
689 | #endif |
|
|
690 | } |
|
|
691 | |
|
|
692 | static void |
|
|
693 | siginit (EV_P) |
|
|
694 | { |
|
|
695 | fd_intern (sigpipe [0]); |
|
|
696 | fd_intern (sigpipe [1]); |
|
|
697 | |
|
|
698 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
699 | ev_io_start (EV_A_ &sigev); |
|
|
700 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
701 | } |
|
|
702 | |
|
|
703 | /*****************************************************************************/ |
|
|
704 | |
|
|
705 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
706 | |
|
|
707 | #ifndef _WIN32 |
|
|
708 | |
|
|
709 | static struct ev_signal childev; |
|
|
710 | |
|
|
711 | #ifndef WCONTINUED |
|
|
712 | # define WCONTINUED 0 |
|
|
713 | #endif |
|
|
714 | |
|
|
715 | static void |
|
|
716 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
|
|
717 | { |
|
|
718 | struct ev_child *w; |
|
|
719 | |
|
|
720 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
721 | if (w->pid == pid || !w->pid) |
|
|
722 | { |
|
|
723 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
|
|
724 | w->rpid = pid; |
|
|
725 | w->rstatus = status; |
|
|
726 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
727 | } |
|
|
728 | } |
|
|
729 | |
|
|
730 | static void |
|
|
731 | childcb (EV_P_ struct ev_signal *sw, int revents) |
|
|
732 | { |
|
|
733 | int pid, status; |
|
|
734 | |
|
|
735 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
|
|
736 | { |
|
|
737 | /* make sure we are called again until all childs have been reaped */ |
|
|
738 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
739 | |
|
|
740 | child_reap (EV_A_ sw, pid, pid, status); |
|
|
741 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
|
|
742 | } |
|
|
743 | } |
|
|
744 | |
|
|
745 | #endif |
|
|
746 | |
|
|
747 | /*****************************************************************************/ |
|
|
748 | |
|
|
749 | #if EV_USE_PORT |
|
|
750 | # include "ev_port.c" |
|
|
751 | #endif |
|
|
752 | #if EV_USE_KQUEUE |
|
|
753 | # include "ev_kqueue.c" |
|
|
754 | #endif |
193 | #if HAVE_EPOLL |
755 | #if EV_USE_EPOLL |
194 | # include "ev_epoll.c" |
756 | # include "ev_epoll.c" |
195 | #endif |
757 | #endif |
|
|
758 | #if EV_USE_POLL |
|
|
759 | # include "ev_poll.c" |
|
|
760 | #endif |
196 | #if HAVE_SELECT |
761 | #if EV_USE_SELECT |
197 | # include "ev_select.c" |
762 | # include "ev_select.c" |
198 | #endif |
763 | #endif |
199 | |
764 | |
200 | int ev_init (int flags) |
765 | int |
|
|
766 | ev_version_major (void) |
201 | { |
767 | { |
|
|
768 | return EV_VERSION_MAJOR; |
|
|
769 | } |
|
|
770 | |
|
|
771 | int |
|
|
772 | ev_version_minor (void) |
|
|
773 | { |
|
|
774 | return EV_VERSION_MINOR; |
|
|
775 | } |
|
|
776 | |
|
|
777 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
778 | static int |
|
|
779 | enable_secure (void) |
|
|
780 | { |
|
|
781 | #ifdef _WIN32 |
|
|
782 | return 0; |
|
|
783 | #else |
|
|
784 | return getuid () != geteuid () |
|
|
785 | || getgid () != getegid (); |
|
|
786 | #endif |
|
|
787 | } |
|
|
788 | |
|
|
789 | unsigned int |
|
|
790 | ev_method (EV_P) |
|
|
791 | { |
|
|
792 | return method; |
|
|
793 | } |
|
|
794 | |
|
|
795 | static void |
|
|
796 | loop_init (EV_P_ unsigned int flags) |
|
|
797 | { |
|
|
798 | if (!method) |
|
|
799 | { |
202 | #if HAVE_MONOTONIC |
800 | #if EV_USE_MONOTONIC |
203 | { |
801 | { |
204 | struct timespec ts; |
802 | struct timespec ts; |
205 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
803 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
206 | have_monotonic = 1; |
804 | have_monotonic = 1; |
207 | } |
805 | } |
208 | #endif |
806 | #endif |
209 | |
807 | |
210 | ev_now = ev_time (); |
808 | ev_rt_now = ev_time (); |
|
|
809 | mn_now = get_clock (); |
|
|
810 | now_floor = mn_now; |
|
|
811 | rtmn_diff = ev_rt_now - mn_now; |
211 | |
812 | |
|
|
813 | if (!(flags & EVFLAG_NOENV) |
|
|
814 | && !enable_secure () |
|
|
815 | && getenv ("LIBEV_FLAGS")) |
|
|
816 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
817 | |
|
|
818 | if (!(flags & EVMETHOD_ALL)) |
|
|
819 | { |
|
|
820 | flags |= EVMETHOD_ALL; |
|
|
821 | #if EV_USE_KQUEUE && !defined (__NetBSD__) |
|
|
822 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
823 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
824 | flags &= ~EVMETHOD_KQUEUE; |
|
|
825 | #endif |
|
|
826 | } |
|
|
827 | |
|
|
828 | method = 0; |
|
|
829 | #if EV_USE_PORT |
|
|
830 | if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags); |
|
|
831 | #endif |
|
|
832 | #if EV_USE_KQUEUE |
|
|
833 | if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags); |
|
|
834 | #endif |
212 | #if HAVE_EPOLL |
835 | #if EV_USE_EPOLL |
213 | if (epoll_init (flags)) |
836 | if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags); |
214 | return ev_method; |
|
|
215 | #endif |
837 | #endif |
|
|
838 | #if EV_USE_POLL |
|
|
839 | if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags); |
|
|
840 | #endif |
216 | #if HAVE_SELECT |
841 | #if EV_USE_SELECT |
217 | if (select_init (flags)) |
842 | if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags); |
218 | return ev_method; |
|
|
219 | #endif |
843 | #endif |
220 | |
844 | |
221 | ev_method = EVMETHOD_NONE; |
845 | ev_init (&sigev, sigcb); |
222 | return ev_method; |
846 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
847 | } |
223 | } |
848 | } |
224 | |
849 | |
225 | void ev_prefork (void) |
|
|
226 | { |
|
|
227 | } |
|
|
228 | |
|
|
229 | void ev_postfork_parent (void) |
|
|
230 | { |
|
|
231 | } |
|
|
232 | |
|
|
233 | void ev_postfork_child (void) |
|
|
234 | { |
|
|
235 | #if HAVE_EPOLL |
|
|
236 | epoll_postfork_child (); |
|
|
237 | #endif |
|
|
238 | } |
|
|
239 | |
|
|
240 | static void |
850 | static void |
241 | call_pending () |
851 | loop_destroy (EV_P) |
242 | { |
852 | { |
243 | int i; |
853 | int i; |
244 | |
854 | |
245 | for (i = 0; i < pendingcnt; ++i) |
855 | #if EV_USE_PORT |
|
|
856 | if (method == EVMETHOD_PORT ) port_destroy (EV_A); |
|
|
857 | #endif |
|
|
858 | #if EV_USE_KQUEUE |
|
|
859 | if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); |
|
|
860 | #endif |
|
|
861 | #if EV_USE_EPOLL |
|
|
862 | if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); |
|
|
863 | #endif |
|
|
864 | #if EV_USE_POLL |
|
|
865 | if (method == EVMETHOD_POLL ) poll_destroy (EV_A); |
|
|
866 | #endif |
|
|
867 | #if EV_USE_SELECT |
|
|
868 | if (method == EVMETHOD_SELECT) select_destroy (EV_A); |
|
|
869 | #endif |
|
|
870 | |
|
|
871 | for (i = NUMPRI; i--; ) |
|
|
872 | array_free (pending, [i]); |
|
|
873 | |
|
|
874 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
875 | array_free (fdchange, EMPTY0); |
|
|
876 | array_free (timer, EMPTY0); |
|
|
877 | #if EV_PERIODICS |
|
|
878 | array_free (periodic, EMPTY0); |
|
|
879 | #endif |
|
|
880 | array_free (idle, EMPTY0); |
|
|
881 | array_free (prepare, EMPTY0); |
|
|
882 | array_free (check, EMPTY0); |
|
|
883 | |
|
|
884 | method = 0; |
|
|
885 | } |
|
|
886 | |
|
|
887 | static void |
|
|
888 | loop_fork (EV_P) |
|
|
889 | { |
|
|
890 | #if EV_USE_PORT |
|
|
891 | if (method == EVMETHOD_PORT ) port_fork (EV_A); |
|
|
892 | #endif |
|
|
893 | #if EV_USE_KQUEUE |
|
|
894 | if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); |
|
|
895 | #endif |
|
|
896 | #if EV_USE_EPOLL |
|
|
897 | if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); |
|
|
898 | #endif |
|
|
899 | |
|
|
900 | if (ev_is_active (&sigev)) |
|
|
901 | { |
|
|
902 | /* default loop */ |
|
|
903 | |
|
|
904 | ev_ref (EV_A); |
|
|
905 | ev_io_stop (EV_A_ &sigev); |
|
|
906 | close (sigpipe [0]); |
|
|
907 | close (sigpipe [1]); |
|
|
908 | |
|
|
909 | while (pipe (sigpipe)) |
|
|
910 | syserr ("(libev) error creating pipe"); |
|
|
911 | |
|
|
912 | siginit (EV_A); |
246 | { |
913 | } |
247 | ANPENDING *p = pendings + i; |
|
|
248 | |
914 | |
249 | if (p->w) |
915 | postfork = 0; |
|
|
916 | } |
|
|
917 | |
|
|
918 | #if EV_MULTIPLICITY |
|
|
919 | struct ev_loop * |
|
|
920 | ev_loop_new (unsigned int flags) |
|
|
921 | { |
|
|
922 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
923 | |
|
|
924 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
925 | |
|
|
926 | loop_init (EV_A_ flags); |
|
|
927 | |
|
|
928 | if (ev_method (EV_A)) |
|
|
929 | return loop; |
|
|
930 | |
|
|
931 | return 0; |
|
|
932 | } |
|
|
933 | |
|
|
934 | void |
|
|
935 | ev_loop_destroy (EV_P) |
|
|
936 | { |
|
|
937 | loop_destroy (EV_A); |
|
|
938 | ev_free (loop); |
|
|
939 | } |
|
|
940 | |
|
|
941 | void |
|
|
942 | ev_loop_fork (EV_P) |
|
|
943 | { |
|
|
944 | postfork = 1; |
|
|
945 | } |
|
|
946 | |
|
|
947 | #endif |
|
|
948 | |
|
|
949 | #if EV_MULTIPLICITY |
|
|
950 | struct ev_loop * |
|
|
951 | ev_default_loop_init (unsigned int flags) |
|
|
952 | #else |
|
|
953 | int |
|
|
954 | ev_default_loop (unsigned int flags) |
|
|
955 | #endif |
|
|
956 | { |
|
|
957 | if (sigpipe [0] == sigpipe [1]) |
|
|
958 | if (pipe (sigpipe)) |
|
|
959 | return 0; |
|
|
960 | |
|
|
961 | if (!ev_default_loop_ptr) |
|
|
962 | { |
|
|
963 | #if EV_MULTIPLICITY |
|
|
964 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
|
|
965 | #else |
|
|
966 | ev_default_loop_ptr = 1; |
|
|
967 | #endif |
|
|
968 | |
|
|
969 | loop_init (EV_A_ flags); |
|
|
970 | |
|
|
971 | if (ev_method (EV_A)) |
250 | { |
972 | { |
251 | p->w->pending = 0; |
973 | siginit (EV_A); |
252 | p->w->cb (p->w, p->events); |
974 | |
|
|
975 | #ifndef _WIN32 |
|
|
976 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
977 | ev_set_priority (&childev, EV_MAXPRI); |
|
|
978 | ev_signal_start (EV_A_ &childev); |
|
|
979 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
980 | #endif |
253 | } |
981 | } |
|
|
982 | else |
|
|
983 | ev_default_loop_ptr = 0; |
|
|
984 | } |
|
|
985 | |
|
|
986 | return ev_default_loop_ptr; |
|
|
987 | } |
|
|
988 | |
|
|
989 | void |
|
|
990 | ev_default_destroy (void) |
|
|
991 | { |
|
|
992 | #if EV_MULTIPLICITY |
|
|
993 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
994 | #endif |
|
|
995 | |
|
|
996 | #ifndef _WIN32 |
|
|
997 | ev_ref (EV_A); /* child watcher */ |
|
|
998 | ev_signal_stop (EV_A_ &childev); |
|
|
999 | #endif |
|
|
1000 | |
|
|
1001 | ev_ref (EV_A); /* signal watcher */ |
|
|
1002 | ev_io_stop (EV_A_ &sigev); |
|
|
1003 | |
|
|
1004 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
1005 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
1006 | |
|
|
1007 | loop_destroy (EV_A); |
|
|
1008 | } |
|
|
1009 | |
|
|
1010 | void |
|
|
1011 | ev_default_fork (void) |
|
|
1012 | { |
|
|
1013 | #if EV_MULTIPLICITY |
|
|
1014 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1015 | #endif |
|
|
1016 | |
|
|
1017 | if (method) |
|
|
1018 | postfork = 1; |
|
|
1019 | } |
|
|
1020 | |
|
|
1021 | /*****************************************************************************/ |
|
|
1022 | |
|
|
1023 | static int |
|
|
1024 | any_pending (EV_P) |
|
|
1025 | { |
|
|
1026 | int pri; |
|
|
1027 | |
|
|
1028 | for (pri = NUMPRI; pri--; ) |
|
|
1029 | if (pendingcnt [pri]) |
|
|
1030 | return 1; |
|
|
1031 | |
|
|
1032 | return 0; |
|
|
1033 | } |
|
|
1034 | |
|
|
1035 | inline void |
|
|
1036 | call_pending (EV_P) |
|
|
1037 | { |
|
|
1038 | int pri; |
|
|
1039 | |
|
|
1040 | for (pri = NUMPRI; pri--; ) |
|
|
1041 | while (pendingcnt [pri]) |
|
|
1042 | { |
|
|
1043 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
|
|
1044 | |
|
|
1045 | if (expect_true (p->w)) |
|
|
1046 | { |
|
|
1047 | p->w->pending = 0; |
|
|
1048 | EV_CB_INVOKE (p->w, p->events); |
|
|
1049 | } |
254 | } |
1050 | } |
255 | |
|
|
256 | pendingcnt = 0; |
|
|
257 | } |
1051 | } |
258 | |
1052 | |
259 | static void |
1053 | inline void |
260 | timer_reify (void) |
1054 | timers_reify (EV_P) |
261 | { |
1055 | { |
262 | while (timercnt && timers [0]->at <= ev_now) |
1056 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
263 | { |
1057 | { |
264 | struct ev_timer *w = timers [0]; |
1058 | struct ev_timer *w = timers [0]; |
265 | |
1059 | |
|
|
1060 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
|
|
1061 | |
266 | /* first reschedule timer */ |
1062 | /* first reschedule or stop timer */ |
267 | if (w->repeat) |
1063 | if (w->repeat) |
268 | { |
1064 | { |
269 | fprintf (stderr, "a %f now %f repeat %f, %f\n", w->at, ev_now, w->repeat, w->repeat *1e30);//D |
1065 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
270 | if (w->is_abs) |
1066 | |
271 | w->at += floor ((ev_now - w->at) / w->repeat + 1.) * w->repeat; |
|
|
272 | else |
|
|
273 | w->at = ev_now + w->repeat; |
1067 | ((WT)w)->at += w->repeat; |
|
|
1068 | if (((WT)w)->at < mn_now) |
|
|
1069 | ((WT)w)->at = mn_now; |
274 | |
1070 | |
275 | fprintf (stderr, "b %f\n", w->at);//D |
1071 | downheap ((WT *)timers, timercnt, 0); |
276 | |
|
|
277 | downheap (0); |
|
|
278 | } |
1072 | } |
279 | else |
1073 | else |
280 | evtimer_stop (w); /* nonrepeating: stop timer */ |
1074 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
281 | |
1075 | |
282 | event ((struct ev_watcher *)w, EV_TIMEOUT); |
1076 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
1077 | } |
|
|
1078 | } |
|
|
1079 | |
|
|
1080 | #if EV_PERIODICS |
|
|
1081 | inline void |
|
|
1082 | periodics_reify (EV_P) |
|
|
1083 | { |
|
|
1084 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
283 | } |
1085 | { |
284 | } |
1086 | struct ev_periodic *w = periodics [0]; |
285 | |
1087 | |
286 | int ev_loop_done; |
1088 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
287 | |
1089 | |
|
|
1090 | /* first reschedule or stop timer */ |
|
|
1091 | if (w->reschedule_cb) |
|
|
1092 | { |
|
|
1093 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); |
|
|
1094 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
|
|
1095 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1096 | } |
|
|
1097 | else if (w->interval) |
|
|
1098 | { |
|
|
1099 | ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
|
|
1100 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
|
|
1101 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1102 | } |
|
|
1103 | else |
|
|
1104 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1105 | |
|
|
1106 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
|
|
1107 | } |
|
|
1108 | } |
|
|
1109 | |
|
|
1110 | static void |
|
|
1111 | periodics_reschedule (EV_P) |
|
|
1112 | { |
|
|
1113 | int i; |
|
|
1114 | |
|
|
1115 | /* adjust periodics after time jump */ |
|
|
1116 | for (i = 0; i < periodiccnt; ++i) |
|
|
1117 | { |
|
|
1118 | struct ev_periodic *w = periodics [i]; |
|
|
1119 | |
|
|
1120 | if (w->reschedule_cb) |
|
|
1121 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1122 | else if (w->interval) |
|
|
1123 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1124 | } |
|
|
1125 | |
|
|
1126 | /* now rebuild the heap */ |
|
|
1127 | for (i = periodiccnt >> 1; i--; ) |
|
|
1128 | downheap ((WT *)periodics, periodiccnt, i); |
|
|
1129 | } |
|
|
1130 | #endif |
|
|
1131 | |
|
|
1132 | inline int |
|
|
1133 | time_update_monotonic (EV_P) |
|
|
1134 | { |
|
|
1135 | mn_now = get_clock (); |
|
|
1136 | |
|
|
1137 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
1138 | { |
|
|
1139 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1140 | return 0; |
|
|
1141 | } |
|
|
1142 | else |
|
|
1143 | { |
|
|
1144 | now_floor = mn_now; |
|
|
1145 | ev_rt_now = ev_time (); |
|
|
1146 | return 1; |
|
|
1147 | } |
|
|
1148 | } |
|
|
1149 | |
|
|
1150 | inline void |
|
|
1151 | time_update (EV_P) |
|
|
1152 | { |
|
|
1153 | int i; |
|
|
1154 | |
|
|
1155 | #if EV_USE_MONOTONIC |
|
|
1156 | if (expect_true (have_monotonic)) |
|
|
1157 | { |
|
|
1158 | if (time_update_monotonic (EV_A)) |
|
|
1159 | { |
|
|
1160 | ev_tstamp odiff = rtmn_diff; |
|
|
1161 | |
|
|
1162 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
1163 | { |
|
|
1164 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1165 | |
|
|
1166 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
|
|
1167 | return; /* all is well */ |
|
|
1168 | |
|
|
1169 | ev_rt_now = ev_time (); |
|
|
1170 | mn_now = get_clock (); |
|
|
1171 | now_floor = mn_now; |
|
|
1172 | } |
|
|
1173 | |
|
|
1174 | # if EV_PERIODICS |
|
|
1175 | periodics_reschedule (EV_A); |
|
|
1176 | # endif |
|
|
1177 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1178 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
1179 | } |
|
|
1180 | } |
|
|
1181 | else |
|
|
1182 | #endif |
|
|
1183 | { |
|
|
1184 | ev_rt_now = ev_time (); |
|
|
1185 | |
|
|
1186 | if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
|
|
1187 | { |
|
|
1188 | #if EV_PERIODICS |
|
|
1189 | periodics_reschedule (EV_A); |
|
|
1190 | #endif |
|
|
1191 | |
|
|
1192 | /* adjust timers. this is easy, as the offset is the same for all */ |
|
|
1193 | for (i = 0; i < timercnt; ++i) |
|
|
1194 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
|
|
1195 | } |
|
|
1196 | |
|
|
1197 | mn_now = ev_rt_now; |
|
|
1198 | } |
|
|
1199 | } |
|
|
1200 | |
|
|
1201 | void |
|
|
1202 | ev_ref (EV_P) |
|
|
1203 | { |
|
|
1204 | ++activecnt; |
|
|
1205 | } |
|
|
1206 | |
|
|
1207 | void |
|
|
1208 | ev_unref (EV_P) |
|
|
1209 | { |
|
|
1210 | --activecnt; |
|
|
1211 | } |
|
|
1212 | |
|
|
1213 | static int loop_done; |
|
|
1214 | |
|
|
1215 | void |
288 | int ev_loop (int flags) |
1216 | ev_loop (EV_P_ int flags) |
289 | { |
1217 | { |
290 | double block; |
1218 | double block; |
291 | ev_loop_done = flags & EVLOOP_ONESHOT; |
1219 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
292 | |
1220 | |
293 | do |
1221 | while (activecnt) |
294 | { |
1222 | { |
|
|
1223 | /* queue check watchers (and execute them) */ |
|
|
1224 | if (expect_false (preparecnt)) |
|
|
1225 | { |
|
|
1226 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
|
|
1227 | call_pending (EV_A); |
|
|
1228 | } |
|
|
1229 | |
|
|
1230 | /* we might have forked, so reify kernel state if necessary */ |
|
|
1231 | if (expect_false (postfork)) |
|
|
1232 | loop_fork (EV_A); |
|
|
1233 | |
295 | /* update fd-related kernel structures */ |
1234 | /* update fd-related kernel structures */ |
296 | method_reify (); fdchangecnt = 0; |
1235 | fd_reify (EV_A); |
297 | |
1236 | |
298 | /* calculate blocking time */ |
1237 | /* calculate blocking time */ |
|
|
1238 | |
|
|
1239 | /* we only need this for !monotonic clock or timers, but as we basically |
|
|
1240 | always have timers, we just calculate it always */ |
|
|
1241 | #if EV_USE_MONOTONIC |
|
|
1242 | if (expect_true (have_monotonic)) |
|
|
1243 | time_update_monotonic (EV_A); |
|
|
1244 | else |
|
|
1245 | #endif |
|
|
1246 | { |
299 | ev_now = ev_time (); |
1247 | ev_rt_now = ev_time (); |
|
|
1248 | mn_now = ev_rt_now; |
|
|
1249 | } |
300 | |
1250 | |
301 | if (flags & EVLOOP_NONBLOCK) |
1251 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
302 | block = 0.; |
1252 | block = 0.; |
303 | else if (!timercnt) |
|
|
304 | block = MAX_BLOCKTIME; |
|
|
305 | else |
1253 | else |
306 | { |
1254 | { |
|
|
1255 | block = MAX_BLOCKTIME; |
|
|
1256 | |
|
|
1257 | if (timercnt) |
|
|
1258 | { |
307 | block = timers [0]->at - ev_now + method_fudge; |
1259 | ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; |
|
|
1260 | if (block > to) block = to; |
|
|
1261 | } |
|
|
1262 | |
|
|
1263 | #if EV_PERIODICS |
|
|
1264 | if (periodiccnt) |
|
|
1265 | { |
|
|
1266 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; |
|
|
1267 | if (block > to) block = to; |
|
|
1268 | } |
|
|
1269 | #endif |
|
|
1270 | |
308 | if (block < 0.) block = 0.; |
1271 | if (expect_false (block < 0.)) block = 0.; |
309 | else if (block > MAX_BLOCKTIME) block = MAX_BLOCKTIME; |
|
|
310 | } |
1272 | } |
311 | |
1273 | |
312 | fprintf (stderr, "block %f\n", block);//D |
|
|
313 | method_poll (block); |
1274 | method_poll (EV_A_ block); |
314 | |
1275 | |
|
|
1276 | /* update ev_rt_now, do magic */ |
|
|
1277 | time_update (EV_A); |
|
|
1278 | |
315 | /* put pending timers into pendign queue and reschedule them */ |
1279 | /* queue pending timers and reschedule them */ |
316 | timer_reify (); |
1280 | timers_reify (EV_A); /* relative timers called last */ |
|
|
1281 | #if EV_PERIODICS |
|
|
1282 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
1283 | #endif |
317 | |
1284 | |
318 | ev_now = ev_time (); |
1285 | /* queue idle watchers unless io or timers are pending */ |
|
|
1286 | if (idlecnt && !any_pending (EV_A)) |
|
|
1287 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
|
|
1288 | |
|
|
1289 | /* queue check watchers, to be executed first */ |
|
|
1290 | if (expect_false (checkcnt)) |
|
|
1291 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
|
|
1292 | |
319 | call_pending (); |
1293 | call_pending (EV_A); |
320 | } |
|
|
321 | while (!ev_loop_done); |
|
|
322 | } |
|
|
323 | |
1294 | |
324 | static void |
1295 | if (expect_false (loop_done)) |
325 | wlist_add (struct ev_watcher_list **head, struct ev_watcher_list *elem) |
1296 | break; |
|
|
1297 | } |
|
|
1298 | |
|
|
1299 | if (loop_done != 2) |
|
|
1300 | loop_done = 0; |
|
|
1301 | } |
|
|
1302 | |
|
|
1303 | void |
|
|
1304 | ev_unloop (EV_P_ int how) |
|
|
1305 | { |
|
|
1306 | loop_done = how; |
|
|
1307 | } |
|
|
1308 | |
|
|
1309 | /*****************************************************************************/ |
|
|
1310 | |
|
|
1311 | inline void |
|
|
1312 | wlist_add (WL *head, WL elem) |
326 | { |
1313 | { |
327 | elem->next = *head; |
1314 | elem->next = *head; |
328 | *head = elem; |
1315 | *head = elem; |
329 | } |
1316 | } |
330 | |
1317 | |
331 | static void |
1318 | inline void |
332 | wlist_del (struct ev_watcher_list **head, struct ev_watcher_list *elem) |
1319 | wlist_del (WL *head, WL elem) |
333 | { |
1320 | { |
334 | while (*head) |
1321 | while (*head) |
335 | { |
1322 | { |
336 | if (*head == elem) |
1323 | if (*head == elem) |
337 | { |
1324 | { |
… | |
… | |
341 | |
1328 | |
342 | head = &(*head)->next; |
1329 | head = &(*head)->next; |
343 | } |
1330 | } |
344 | } |
1331 | } |
345 | |
1332 | |
346 | static void |
1333 | inline void |
347 | ev_start (struct ev_watcher *w, int active) |
1334 | ev_clear_pending (EV_P_ W w) |
348 | { |
1335 | { |
|
|
1336 | if (w->pending) |
|
|
1337 | { |
|
|
1338 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
349 | w->pending = 0; |
1339 | w->pending = 0; |
|
|
1340 | } |
|
|
1341 | } |
|
|
1342 | |
|
|
1343 | inline void |
|
|
1344 | ev_start (EV_P_ W w, int active) |
|
|
1345 | { |
|
|
1346 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1347 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1348 | |
350 | w->active = active; |
1349 | w->active = active; |
|
|
1350 | ev_ref (EV_A); |
351 | } |
1351 | } |
352 | |
1352 | |
353 | static void |
1353 | inline void |
354 | ev_stop (struct ev_watcher *w) |
1354 | ev_stop (EV_P_ W w) |
355 | { |
1355 | { |
356 | if (w->pending) |
1356 | ev_unref (EV_A); |
357 | pendings [w->pending - 1].w = 0; |
|
|
358 | |
|
|
359 | w->active = 0; |
1357 | w->active = 0; |
360 | /* nop */ |
|
|
361 | } |
1358 | } |
362 | |
1359 | |
|
|
1360 | /*****************************************************************************/ |
|
|
1361 | |
363 | void |
1362 | void |
364 | evio_start (struct ev_io *w) |
1363 | ev_io_start (EV_P_ struct ev_io *w) |
|
|
1364 | { |
|
|
1365 | int fd = w->fd; |
|
|
1366 | |
|
|
1367 | if (expect_false (ev_is_active (w))) |
|
|
1368 | return; |
|
|
1369 | |
|
|
1370 | assert (("ev_io_start called with negative fd", fd >= 0)); |
|
|
1371 | |
|
|
1372 | ev_start (EV_A_ (W)w, 1); |
|
|
1373 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
|
|
1374 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
|
|
1375 | |
|
|
1376 | fd_change (EV_A_ fd); |
|
|
1377 | } |
|
|
1378 | |
|
|
1379 | void |
|
|
1380 | ev_io_stop (EV_P_ struct ev_io *w) |
|
|
1381 | { |
|
|
1382 | ev_clear_pending (EV_A_ (W)w); |
|
|
1383 | if (expect_false (!ev_is_active (w))) |
|
|
1384 | return; |
|
|
1385 | |
|
|
1386 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
1387 | |
|
|
1388 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
|
|
1389 | ev_stop (EV_A_ (W)w); |
|
|
1390 | |
|
|
1391 | fd_change (EV_A_ w->fd); |
|
|
1392 | } |
|
|
1393 | |
|
|
1394 | void |
|
|
1395 | ev_timer_start (EV_P_ struct ev_timer *w) |
|
|
1396 | { |
|
|
1397 | if (expect_false (ev_is_active (w))) |
|
|
1398 | return; |
|
|
1399 | |
|
|
1400 | ((WT)w)->at += mn_now; |
|
|
1401 | |
|
|
1402 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
|
|
1403 | |
|
|
1404 | ev_start (EV_A_ (W)w, ++timercnt); |
|
|
1405 | array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2); |
|
|
1406 | timers [timercnt - 1] = w; |
|
|
1407 | upheap ((WT *)timers, timercnt - 1); |
|
|
1408 | |
|
|
1409 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1410 | } |
|
|
1411 | |
|
|
1412 | void |
|
|
1413 | ev_timer_stop (EV_P_ struct ev_timer *w) |
|
|
1414 | { |
|
|
1415 | ev_clear_pending (EV_A_ (W)w); |
|
|
1416 | if (expect_false (!ev_is_active (w))) |
|
|
1417 | return; |
|
|
1418 | |
|
|
1419 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1420 | |
|
|
1421 | if (expect_true (((W)w)->active < timercnt--)) |
|
|
1422 | { |
|
|
1423 | timers [((W)w)->active - 1] = timers [timercnt]; |
|
|
1424 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
|
|
1425 | } |
|
|
1426 | |
|
|
1427 | ((WT)w)->at -= mn_now; |
|
|
1428 | |
|
|
1429 | ev_stop (EV_A_ (W)w); |
|
|
1430 | } |
|
|
1431 | |
|
|
1432 | void |
|
|
1433 | ev_timer_again (EV_P_ struct ev_timer *w) |
365 | { |
1434 | { |
366 | if (ev_is_active (w)) |
1435 | if (ev_is_active (w)) |
|
|
1436 | { |
|
|
1437 | if (w->repeat) |
|
|
1438 | { |
|
|
1439 | ((WT)w)->at = mn_now + w->repeat; |
|
|
1440 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
|
|
1441 | } |
|
|
1442 | else |
|
|
1443 | ev_timer_stop (EV_A_ w); |
|
|
1444 | } |
|
|
1445 | else if (w->repeat) |
|
|
1446 | { |
|
|
1447 | w->at = w->repeat; |
|
|
1448 | ev_timer_start (EV_A_ w); |
|
|
1449 | } |
|
|
1450 | } |
|
|
1451 | |
|
|
1452 | #if EV_PERIODICS |
|
|
1453 | void |
|
|
1454 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
|
|
1455 | { |
|
|
1456 | if (expect_false (ev_is_active (w))) |
367 | return; |
1457 | return; |
368 | |
1458 | |
369 | int fd = w->fd; |
1459 | if (w->reschedule_cb) |
|
|
1460 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1461 | else if (w->interval) |
|
|
1462 | { |
|
|
1463 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
|
|
1464 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
|
|
1465 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1466 | } |
370 | |
1467 | |
371 | ev_start ((struct ev_watcher *)w, 1); |
1468 | ev_start (EV_A_ (W)w, ++periodiccnt); |
372 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1469 | array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); |
373 | wlist_add ((struct ev_watcher_list **)&anfds[fd].head, (struct ev_watcher_list *)w); |
1470 | periodics [periodiccnt - 1] = w; |
|
|
1471 | upheap ((WT *)periodics, periodiccnt - 1); |
374 | |
1472 | |
375 | ++fdchangecnt; |
1473 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
376 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
377 | fdchanges [fdchangecnt - 1] = fd; |
|
|
378 | } |
1474 | } |
379 | |
1475 | |
380 | void |
1476 | void |
381 | evio_stop (struct ev_io *w) |
1477 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
382 | { |
1478 | { |
|
|
1479 | ev_clear_pending (EV_A_ (W)w); |
383 | if (!ev_is_active (w)) |
1480 | if (expect_false (!ev_is_active (w))) |
384 | return; |
1481 | return; |
385 | |
1482 | |
386 | wlist_del ((struct ev_watcher_list **)&anfds[w->fd].head, (struct ev_watcher_list *)w); |
1483 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
387 | ev_stop ((struct ev_watcher *)w); |
|
|
388 | |
1484 | |
389 | ++fdchangecnt; |
1485 | if (expect_true (((W)w)->active < periodiccnt--)) |
390 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
1486 | { |
391 | fdchanges [fdchangecnt - 1] = w->fd; |
1487 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
392 | } |
1488 | adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
|
|
1489 | } |
393 | |
1490 | |
|
|
1491 | ev_stop (EV_A_ (W)w); |
|
|
1492 | } |
|
|
1493 | |
394 | void |
1494 | void |
|
|
1495 | ev_periodic_again (EV_P_ struct ev_periodic *w) |
|
|
1496 | { |
|
|
1497 | /* TODO: use adjustheap and recalculation */ |
|
|
1498 | ev_periodic_stop (EV_A_ w); |
|
|
1499 | ev_periodic_start (EV_A_ w); |
|
|
1500 | } |
|
|
1501 | #endif |
|
|
1502 | |
|
|
1503 | void |
395 | evtimer_start (struct ev_timer *w) |
1504 | ev_idle_start (EV_P_ struct ev_idle *w) |
396 | { |
1505 | { |
397 | if (ev_is_active (w)) |
1506 | if (expect_false (ev_is_active (w))) |
398 | return; |
1507 | return; |
399 | |
1508 | |
400 | fprintf (stderr, "t1 %f a %d\n", w->at, w->is_abs);//D |
1509 | ev_start (EV_A_ (W)w, ++idlecnt); |
401 | if (w->is_abs) |
1510 | array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2); |
402 | { |
|
|
403 | if (w->repeat) |
|
|
404 | w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat; |
|
|
405 | } |
|
|
406 | else |
|
|
407 | w->at += ev_now; |
|
|
408 | fprintf (stderr, "t2 %f a %d\n", w->at, w->is_abs);//D |
|
|
409 | |
|
|
410 | ev_start ((struct ev_watcher *)w, ++timercnt); |
|
|
411 | array_needsize (timers, timermax, timercnt, ); |
|
|
412 | timers [timercnt - 1] = w; |
1511 | idles [idlecnt - 1] = w; |
413 | upheap (timercnt - 1); |
|
|
414 | } |
1512 | } |
415 | |
1513 | |
416 | void |
1514 | void |
417 | evtimer_stop (struct ev_timer *w) |
1515 | ev_idle_stop (EV_P_ struct ev_idle *w) |
418 | { |
1516 | { |
|
|
1517 | ev_clear_pending (EV_A_ (W)w); |
419 | if (!ev_is_active (w)) |
1518 | if (expect_false (!ev_is_active (w))) |
420 | return; |
1519 | return; |
421 | |
1520 | |
422 | timers [w->active - 1] = timers [--timercnt]; |
1521 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
423 | downheap (w->active - 1); |
1522 | ev_stop (EV_A_ (W)w); |
424 | ev_stop ((struct ev_watcher *)w); |
|
|
425 | } |
1523 | } |
426 | |
1524 | |
427 | void |
1525 | void |
428 | evsignal_start (struct ev_signal *w) |
1526 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
429 | { |
1527 | { |
430 | if (ev_is_active (w)) |
1528 | if (expect_false (ev_is_active (w))) |
431 | return; |
1529 | return; |
432 | |
1530 | |
433 | ev_start ((struct ev_watcher *)w, 1); |
1531 | ev_start (EV_A_ (W)w, ++preparecnt); |
434 | array_needsize (signals, signalmax, w->signum, signals_init); |
1532 | array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
435 | wlist_add ((struct ev_watcher_list **)&signals [w->signum - 1], (struct ev_watcher_list *)w); |
1533 | prepares [preparecnt - 1] = w; |
436 | } |
1534 | } |
437 | |
1535 | |
438 | void |
1536 | void |
439 | evsignal_stop (struct ev_signal *w) |
1537 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
440 | { |
1538 | { |
|
|
1539 | ev_clear_pending (EV_A_ (W)w); |
441 | if (!ev_is_active (w)) |
1540 | if (expect_false (!ev_is_active (w))) |
442 | return; |
1541 | return; |
443 | |
1542 | |
444 | wlist_del ((struct ev_watcher_list **)&signals [w->signum - 1], (struct ev_watcher_list *)w); |
1543 | prepares [((W)w)->active - 1] = prepares [--preparecnt]; |
445 | ev_stop ((struct ev_watcher *)w); |
1544 | ev_stop (EV_A_ (W)w); |
|
|
1545 | } |
|
|
1546 | |
|
|
1547 | void |
|
|
1548 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1549 | { |
|
|
1550 | if (expect_false (ev_is_active (w))) |
|
|
1551 | return; |
|
|
1552 | |
|
|
1553 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1554 | array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
1555 | checks [checkcnt - 1] = w; |
|
|
1556 | } |
|
|
1557 | |
|
|
1558 | void |
|
|
1559 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1560 | { |
|
|
1561 | ev_clear_pending (EV_A_ (W)w); |
|
|
1562 | if (expect_false (!ev_is_active (w))) |
|
|
1563 | return; |
|
|
1564 | |
|
|
1565 | checks [((W)w)->active - 1] = checks [--checkcnt]; |
|
|
1566 | ev_stop (EV_A_ (W)w); |
|
|
1567 | } |
|
|
1568 | |
|
|
1569 | #ifndef SA_RESTART |
|
|
1570 | # define SA_RESTART 0 |
|
|
1571 | #endif |
|
|
1572 | |
|
|
1573 | void |
|
|
1574 | ev_signal_start (EV_P_ struct ev_signal *w) |
|
|
1575 | { |
|
|
1576 | #if EV_MULTIPLICITY |
|
|
1577 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1578 | #endif |
|
|
1579 | if (expect_false (ev_is_active (w))) |
|
|
1580 | return; |
|
|
1581 | |
|
|
1582 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1583 | |
|
|
1584 | ev_start (EV_A_ (W)w, 1); |
|
|
1585 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
|
|
1586 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
1587 | |
|
|
1588 | if (!((WL)w)->next) |
|
|
1589 | { |
|
|
1590 | #if _WIN32 |
|
|
1591 | signal (w->signum, sighandler); |
|
|
1592 | #else |
|
|
1593 | struct sigaction sa; |
|
|
1594 | sa.sa_handler = sighandler; |
|
|
1595 | sigfillset (&sa.sa_mask); |
|
|
1596 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
1597 | sigaction (w->signum, &sa, 0); |
|
|
1598 | #endif |
|
|
1599 | } |
|
|
1600 | } |
|
|
1601 | |
|
|
1602 | void |
|
|
1603 | ev_signal_stop (EV_P_ struct ev_signal *w) |
|
|
1604 | { |
|
|
1605 | ev_clear_pending (EV_A_ (W)w); |
|
|
1606 | if (expect_false (!ev_is_active (w))) |
|
|
1607 | return; |
|
|
1608 | |
|
|
1609 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
1610 | ev_stop (EV_A_ (W)w); |
|
|
1611 | |
|
|
1612 | if (!signals [w->signum - 1].head) |
|
|
1613 | signal (w->signum, SIG_DFL); |
|
|
1614 | } |
|
|
1615 | |
|
|
1616 | void |
|
|
1617 | ev_child_start (EV_P_ struct ev_child *w) |
|
|
1618 | { |
|
|
1619 | #if EV_MULTIPLICITY |
|
|
1620 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1621 | #endif |
|
|
1622 | if (expect_false (ev_is_active (w))) |
|
|
1623 | return; |
|
|
1624 | |
|
|
1625 | ev_start (EV_A_ (W)w, 1); |
|
|
1626 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1627 | } |
|
|
1628 | |
|
|
1629 | void |
|
|
1630 | ev_child_stop (EV_P_ struct ev_child *w) |
|
|
1631 | { |
|
|
1632 | ev_clear_pending (EV_A_ (W)w); |
|
|
1633 | if (expect_false (!ev_is_active (w))) |
|
|
1634 | return; |
|
|
1635 | |
|
|
1636 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1637 | ev_stop (EV_A_ (W)w); |
446 | } |
1638 | } |
447 | |
1639 | |
448 | /*****************************************************************************/ |
1640 | /*****************************************************************************/ |
449 | #if 1 |
|
|
450 | |
1641 | |
451 | static void |
1642 | struct ev_once |
452 | sin_cb (struct ev_io *w, int revents) |
|
|
453 | { |
1643 | { |
454 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
455 | } |
|
|
456 | |
|
|
457 | static void |
|
|
458 | ocb (struct ev_timer *w, int revents) |
|
|
459 | { |
|
|
460 | fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
461 | } |
|
|
462 | |
|
|
463 | int main (void) |
|
|
464 | { |
|
|
465 | struct ev_io sin; |
1644 | struct ev_io io; |
466 | |
|
|
467 | ev_init (0); |
|
|
468 | |
|
|
469 | evw_init (&sin, sin_cb, 55); |
|
|
470 | evio_set (&sin, 0, EV_READ); |
|
|
471 | evio_start (&sin); |
|
|
472 | |
|
|
473 | struct ev_timer t1; |
1645 | struct ev_timer to; |
474 | evw_init (&t1, ocb, 1); |
1646 | void (*cb)(int revents, void *arg); |
475 | evtimer_set_rel (&t1, 1, 0); |
1647 | void *arg; |
476 | evtimer_start (&t1); |
1648 | }; |
477 | |
1649 | |
478 | struct ev_timer t2; |
1650 | static void |
479 | evw_init (&t2, ocb, 2); |
1651 | once_cb (EV_P_ struct ev_once *once, int revents) |
480 | evtimer_set_abs (&t2, ev_time () + 2, 0); |
1652 | { |
481 | evtimer_start (&t2); |
1653 | void (*cb)(int revents, void *arg) = once->cb; |
|
|
1654 | void *arg = once->arg; |
482 | |
1655 | |
483 | ev_loop (0); |
1656 | ev_io_stop (EV_A_ &once->io); |
|
|
1657 | ev_timer_stop (EV_A_ &once->to); |
|
|
1658 | ev_free (once); |
484 | |
1659 | |
|
|
1660 | cb (revents, arg); |
|
|
1661 | } |
|
|
1662 | |
|
|
1663 | static void |
|
|
1664 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
|
|
1665 | { |
|
|
1666 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
|
|
1667 | } |
|
|
1668 | |
|
|
1669 | static void |
|
|
1670 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
|
|
1671 | { |
|
|
1672 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
|
|
1673 | } |
|
|
1674 | |
|
|
1675 | void |
|
|
1676 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
|
|
1677 | { |
|
|
1678 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
|
|
1679 | |
|
|
1680 | if (expect_false (!once)) |
|
|
1681 | { |
|
|
1682 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
485 | return 0; |
1683 | return; |
486 | } |
1684 | } |
487 | |
1685 | |
488 | #endif |
1686 | once->cb = cb; |
|
|
1687 | once->arg = arg; |
489 | |
1688 | |
|
|
1689 | ev_init (&once->io, once_cb_io); |
|
|
1690 | if (fd >= 0) |
|
|
1691 | { |
|
|
1692 | ev_io_set (&once->io, fd, events); |
|
|
1693 | ev_io_start (EV_A_ &once->io); |
|
|
1694 | } |
490 | |
1695 | |
|
|
1696 | ev_init (&once->to, once_cb_to); |
|
|
1697 | if (timeout >= 0.) |
|
|
1698 | { |
|
|
1699 | ev_timer_set (&once->to, timeout, 0.); |
|
|
1700 | ev_timer_start (EV_A_ &once->to); |
|
|
1701 | } |
|
|
1702 | } |
491 | |
1703 | |
|
|
1704 | #ifdef __cplusplus |
|
|
1705 | } |
|
|
1706 | #endif |
492 | |
1707 | |