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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 | # ifdef EV_CONFIG_H |
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38 | # include EV_CONFIG_H |
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39 | # else |
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40 | # include "config.h" |
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41 | # endif |
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42 | |
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43 | # if HAVE_CLOCK_GETTIME |
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44 | # ifndef EV_USE_MONOTONIC |
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45 | # define EV_USE_MONOTONIC 1 |
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46 | # endif |
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47 | # ifndef EV_USE_REALTIME |
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48 | # define EV_USE_REALTIME 1 |
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49 | # endif |
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50 | # else |
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51 | # ifndef EV_USE_MONOTONIC |
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52 | # define EV_USE_MONOTONIC 0 |
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53 | # endif |
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54 | # ifndef EV_USE_REALTIME |
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55 | # define EV_USE_REALTIME 0 |
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56 | # endif |
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57 | # endif |
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58 | |
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59 | # ifndef EV_USE_SELECT |
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60 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
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61 | # define EV_USE_SELECT 1 |
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62 | # else |
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63 | # define EV_USE_SELECT 0 |
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64 | # endif |
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65 | # endif |
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66 | |
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67 | # ifndef EV_USE_POLL |
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68 | # if HAVE_POLL && HAVE_POLL_H |
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69 | # define EV_USE_POLL 1 |
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70 | # else |
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71 | # define EV_USE_POLL 0 |
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72 | # endif |
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73 | # endif |
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74 | |
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75 | # ifndef EV_USE_EPOLL |
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76 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
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77 | # define EV_USE_EPOLL 1 |
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78 | # else |
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79 | # define EV_USE_EPOLL 0 |
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80 | # endif |
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81 | # endif |
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82 | |
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83 | # ifndef EV_USE_KQUEUE |
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84 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
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85 | # define EV_USE_KQUEUE 1 |
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86 | # else |
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87 | # define EV_USE_KQUEUE 0 |
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88 | # endif |
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89 | # endif |
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90 | |
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91 | # ifndef EV_USE_PORT |
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92 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
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93 | # define EV_USE_PORT 1 |
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94 | # else |
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95 | # define EV_USE_PORT 0 |
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96 | # endif |
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97 | # endif |
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98 | |
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99 | #endif |
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100 | |
1 | #include <math.h> |
101 | #include <math.h> |
2 | #include <stdlib.h> |
102 | #include <stdlib.h> |
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103 | #include <fcntl.h> |
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104 | #include <stddef.h> |
3 | |
105 | |
4 | #include <stdio.h> |
106 | #include <stdio.h> |
5 | |
107 | |
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108 | #include <assert.h> |
6 | #include <errno.h> |
109 | #include <errno.h> |
7 | #include <sys/time.h> |
110 | #include <sys/types.h> |
8 | #include <time.h> |
111 | #include <time.h> |
9 | |
112 | |
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113 | #include <signal.h> |
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114 | |
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115 | #ifndef _WIN32 |
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116 | # include <sys/time.h> |
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117 | # include <sys/wait.h> |
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118 | # include <unistd.h> |
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119 | #else |
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120 | # define WIN32_LEAN_AND_MEAN |
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121 | # include <windows.h> |
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122 | # ifndef EV_SELECT_IS_WINSOCKET |
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123 | # define EV_SELECT_IS_WINSOCKET 1 |
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124 | # endif |
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125 | #endif |
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126 | |
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127 | /**/ |
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128 | |
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129 | #ifndef EV_USE_MONOTONIC |
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130 | # define EV_USE_MONOTONIC 0 |
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131 | #endif |
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132 | |
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133 | #ifndef EV_USE_REALTIME |
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134 | # define EV_USE_REALTIME 0 |
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135 | #endif |
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136 | |
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137 | #ifndef EV_USE_SELECT |
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138 | # define EV_USE_SELECT 1 |
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139 | #endif |
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140 | |
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141 | #ifndef EV_USE_POLL |
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142 | # ifdef _WIN32 |
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143 | # define EV_USE_POLL 0 |
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144 | # else |
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145 | # define EV_USE_POLL 1 |
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146 | # endif |
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147 | #endif |
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148 | |
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149 | #ifndef EV_USE_EPOLL |
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150 | # define EV_USE_EPOLL 0 |
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151 | #endif |
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152 | |
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153 | #ifndef EV_USE_KQUEUE |
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154 | # define EV_USE_KQUEUE 0 |
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155 | #endif |
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156 | |
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157 | #ifndef EV_USE_PORT |
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158 | # define EV_USE_PORT 0 |
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159 | #endif |
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160 | |
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161 | #ifndef EV_PID_HASHSIZE |
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162 | # if EV_MINIMAL |
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163 | # define EV_PID_HASHSIZE 1 |
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164 | # else |
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165 | # define EV_PID_HASHSIZE 16 |
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166 | # endif |
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167 | #endif |
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168 | |
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169 | /**/ |
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170 | |
10 | #ifdef CLOCK_MONOTONIC |
171 | #ifndef CLOCK_MONOTONIC |
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172 | # undef EV_USE_MONOTONIC |
11 | # define HAVE_MONOTONIC 1 |
173 | # define EV_USE_MONOTONIC 0 |
12 | #endif |
174 | #endif |
13 | |
175 | |
14 | #define HAVE_EPOLL 1 |
176 | #ifndef CLOCK_REALTIME |
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177 | # undef EV_USE_REALTIME |
15 | #define HAVE_REALTIME 1 |
178 | # define EV_USE_REALTIME 0 |
16 | #define HAVE_SELECT 0 |
179 | #endif |
17 | |
180 | |
18 | #define MAX_BLOCKTIME 60. |
181 | #if EV_SELECT_IS_WINSOCKET |
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182 | # include <winsock.h> |
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183 | #endif |
19 | |
184 | |
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185 | /**/ |
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186 | |
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187 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
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188 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
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189 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ |
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190 | |
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191 | #ifdef EV_H |
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192 | # include EV_H |
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193 | #else |
20 | #include "ev.h" |
194 | # include "ev.h" |
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195 | #endif |
21 | |
196 | |
22 | struct ev_watcher { |
197 | #if __GNUC__ >= 3 |
23 | EV_WATCHER (ev_watcher); |
198 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
24 | }; |
199 | # define inline_size static inline /* inline for codesize */ |
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200 | # if EV_MINIMAL |
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201 | # define noinline __attribute__ ((noinline)) |
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202 | # define inline_speed static noinline |
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203 | # else |
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204 | # define noinline |
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205 | # define inline_speed static inline |
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206 | # endif |
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207 | #else |
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208 | # define expect(expr,value) (expr) |
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209 | # define inline_speed static |
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210 | # define inline_size static |
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211 | # define noinline |
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212 | #endif |
25 | |
213 | |
26 | struct ev_watcher_list { |
214 | #define expect_false(expr) expect ((expr) != 0, 0) |
27 | EV_WATCHER_LIST (ev_watcher_list); |
215 | #define expect_true(expr) expect ((expr) != 0, 1) |
28 | }; |
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29 | |
216 | |
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217 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
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218 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
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219 | |
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220 | #define EMPTY0 /* required for microsofts broken pseudo-c compiler */ |
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221 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
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222 | |
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223 | typedef ev_watcher *W; |
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224 | typedef ev_watcher_list *WL; |
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225 | typedef ev_watcher_time *WT; |
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226 | |
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227 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
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228 | |
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229 | #ifdef _WIN32 |
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230 | # include "ev_win32.c" |
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231 | #endif |
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232 | |
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233 | /*****************************************************************************/ |
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234 | |
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235 | static void (*syserr_cb)(const char *msg); |
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236 | |
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237 | void |
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238 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
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239 | { |
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240 | syserr_cb = cb; |
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241 | } |
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242 | |
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243 | static void noinline |
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244 | syserr (const char *msg) |
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245 | { |
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246 | if (!msg) |
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247 | msg = "(libev) system error"; |
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248 | |
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249 | if (syserr_cb) |
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250 | syserr_cb (msg); |
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251 | else |
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252 | { |
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253 | perror (msg); |
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254 | abort (); |
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255 | } |
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256 | } |
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257 | |
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258 | static void *(*alloc)(void *ptr, size_t size) = realloc; |
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259 | |
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260 | void |
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261 | ev_set_allocator (void *(*cb)(void *ptr, size_t size)) |
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262 | { |
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263 | alloc = cb; |
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264 | } |
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265 | |
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266 | inline_speed void * |
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267 | ev_realloc (void *ptr, size_t size) |
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268 | { |
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269 | ptr = alloc (ptr, size); |
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270 | |
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271 | if (!ptr && size) |
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272 | { |
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273 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", (long)size); |
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274 | abort (); |
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275 | } |
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276 | |
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277 | return ptr; |
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278 | } |
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279 | |
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280 | #define ev_malloc(size) ev_realloc (0, (size)) |
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281 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
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282 | |
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283 | /*****************************************************************************/ |
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284 | |
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285 | typedef struct |
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286 | { |
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287 | WL head; |
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288 | unsigned char events; |
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289 | unsigned char reify; |
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290 | #if EV_SELECT_IS_WINSOCKET |
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291 | SOCKET handle; |
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292 | #endif |
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293 | } ANFD; |
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294 | |
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295 | typedef struct |
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296 | { |
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297 | W w; |
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298 | int events; |
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299 | } ANPENDING; |
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300 | |
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301 | #if EV_MULTIPLICITY |
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302 | |
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303 | struct ev_loop |
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304 | { |
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305 | ev_tstamp ev_rt_now; |
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306 | #define ev_rt_now ((loop)->ev_rt_now) |
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307 | #define VAR(name,decl) decl; |
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308 | #include "ev_vars.h" |
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309 | #undef VAR |
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310 | }; |
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311 | #include "ev_wrap.h" |
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312 | |
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313 | static struct ev_loop default_loop_struct; |
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314 | struct ev_loop *ev_default_loop_ptr; |
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315 | |
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316 | #else |
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317 | |
30 | ev_tstamp ev_now; |
318 | ev_tstamp ev_rt_now; |
31 | int ev_method; |
319 | #define VAR(name,decl) static decl; |
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320 | #include "ev_vars.h" |
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321 | #undef VAR |
32 | |
322 | |
33 | static int have_monotonic; /* runtime */ |
323 | static int ev_default_loop_ptr; |
34 | |
324 | |
35 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
325 | #endif |
36 | static void (*method_reify)(void); |
326 | |
37 | static void (*method_poll)(ev_tstamp timeout); |
327 | /*****************************************************************************/ |
38 | |
328 | |
39 | ev_tstamp |
329 | ev_tstamp |
40 | ev_time (void) |
330 | ev_time (void) |
41 | { |
331 | { |
42 | #if HAVE_REALTIME |
332 | #if EV_USE_REALTIME |
43 | struct timespec ts; |
333 | struct timespec ts; |
44 | clock_gettime (CLOCK_REALTIME, &ts); |
334 | clock_gettime (CLOCK_REALTIME, &ts); |
45 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
335 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
46 | #else |
336 | #else |
47 | struct timeval tv; |
337 | struct timeval tv; |
48 | gettimeofday (&tv, 0); |
338 | gettimeofday (&tv, 0); |
49 | return tv.tv_sec + tv.tv_usec * 1e-6; |
339 | return tv.tv_sec + tv.tv_usec * 1e-6; |
50 | #endif |
340 | #endif |
51 | } |
341 | } |
52 | |
342 | |
53 | static ev_tstamp |
343 | ev_tstamp inline_size |
54 | get_clock (void) |
344 | get_clock (void) |
55 | { |
345 | { |
56 | #if HAVE_MONOTONIC |
346 | #if EV_USE_MONOTONIC |
57 | if (have_monotonic) |
347 | if (expect_true (have_monotonic)) |
58 | { |
348 | { |
59 | struct timespec ts; |
349 | struct timespec ts; |
60 | clock_gettime (CLOCK_MONOTONIC, &ts); |
350 | clock_gettime (CLOCK_MONOTONIC, &ts); |
61 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
351 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
62 | } |
352 | } |
63 | #endif |
353 | #endif |
64 | |
354 | |
65 | return ev_time (); |
355 | return ev_time (); |
66 | } |
356 | } |
67 | |
357 | |
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358 | #if EV_MULTIPLICITY |
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359 | ev_tstamp |
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360 | ev_now (EV_P) |
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361 | { |
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362 | return ev_rt_now; |
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363 | } |
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364 | #endif |
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365 | |
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366 | #define array_roundsize(type,n) (((n) | 4) & ~3) |
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367 | |
68 | #define array_needsize(base,cur,cnt,init) \ |
368 | #define array_needsize(type,base,cur,cnt,init) \ |
69 | if ((cnt) > cur) \ |
369 | if (expect_false ((cnt) > cur)) \ |
70 | { \ |
370 | { \ |
71 | int newcnt = cur ? cur << 1 : 16; \ |
371 | int newcnt = cur; \ |
72 | fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\ |
372 | do \ |
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373 | { \ |
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374 | newcnt = array_roundsize (type, newcnt << 1); \ |
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375 | } \ |
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376 | while ((cnt) > newcnt); \ |
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377 | \ |
73 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
378 | base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\ |
74 | init (base + cur, newcnt - cur); \ |
379 | init (base + cur, newcnt - cur); \ |
75 | cur = newcnt; \ |
380 | cur = newcnt; \ |
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381 | } |
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382 | |
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383 | #define array_slim(type,stem) \ |
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384 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
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385 | { \ |
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386 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
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387 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
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388 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
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389 | } |
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390 | |
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391 | #define array_free(stem, idx) \ |
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392 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
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393 | |
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394 | /*****************************************************************************/ |
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395 | |
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396 | void noinline |
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397 | ev_feed_event (EV_P_ void *w, int revents) |
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398 | { |
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399 | W w_ = (W)w; |
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400 | |
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401 | if (expect_false (w_->pending)) |
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402 | { |
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403 | pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; |
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404 | return; |
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405 | } |
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406 | |
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407 | w_->pending = ++pendingcnt [ABSPRI (w_)]; |
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408 | array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2); |
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409 | pendings [ABSPRI (w_)][w_->pending - 1].w = w_; |
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410 | pendings [ABSPRI (w_)][w_->pending - 1].events = revents; |
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411 | } |
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412 | |
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413 | void inline_size |
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414 | queue_events (EV_P_ W *events, int eventcnt, int type) |
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415 | { |
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416 | int i; |
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417 | |
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418 | for (i = 0; i < eventcnt; ++i) |
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419 | ev_feed_event (EV_A_ events [i], type); |
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420 | } |
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421 | |
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422 | /*****************************************************************************/ |
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423 | |
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424 | void inline_size |
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425 | anfds_init (ANFD *base, int count) |
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426 | { |
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427 | while (count--) |
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428 | { |
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429 | base->head = 0; |
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430 | base->events = EV_NONE; |
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431 | base->reify = 0; |
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432 | |
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433 | ++base; |
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434 | } |
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435 | } |
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436 | |
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437 | void inline_speed |
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438 | fd_event (EV_P_ int fd, int revents) |
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439 | { |
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440 | ANFD *anfd = anfds + fd; |
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441 | ev_io *w; |
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442 | |
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443 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
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444 | { |
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445 | int ev = w->events & revents; |
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446 | |
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447 | if (ev) |
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448 | ev_feed_event (EV_A_ (W)w, ev); |
|
|
449 | } |
|
|
450 | } |
|
|
451 | |
|
|
452 | void |
|
|
453 | ev_feed_fd_event (EV_P_ int fd, int revents) |
|
|
454 | { |
|
|
455 | fd_event (EV_A_ fd, revents); |
|
|
456 | } |
|
|
457 | |
|
|
458 | void inline_size |
|
|
459 | fd_reify (EV_P) |
|
|
460 | { |
|
|
461 | int i; |
|
|
462 | |
|
|
463 | for (i = 0; i < fdchangecnt; ++i) |
|
|
464 | { |
|
|
465 | int fd = fdchanges [i]; |
|
|
466 | ANFD *anfd = anfds + fd; |
|
|
467 | ev_io *w; |
|
|
468 | |
|
|
469 | int events = 0; |
|
|
470 | |
|
|
471 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
472 | events |= w->events; |
|
|
473 | |
|
|
474 | #if EV_SELECT_IS_WINSOCKET |
|
|
475 | if (events) |
|
|
476 | { |
|
|
477 | unsigned long argp; |
|
|
478 | anfd->handle = _get_osfhandle (fd); |
|
|
479 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
|
|
480 | } |
|
|
481 | #endif |
|
|
482 | |
|
|
483 | anfd->reify = 0; |
|
|
484 | |
|
|
485 | backend_modify (EV_A_ fd, anfd->events, events); |
|
|
486 | anfd->events = events; |
|
|
487 | } |
|
|
488 | |
|
|
489 | fdchangecnt = 0; |
|
|
490 | } |
|
|
491 | |
|
|
492 | void inline_size |
|
|
493 | fd_change (EV_P_ int fd) |
|
|
494 | { |
|
|
495 | if (expect_false (anfds [fd].reify)) |
|
|
496 | return; |
|
|
497 | |
|
|
498 | anfds [fd].reify = 1; |
|
|
499 | |
|
|
500 | ++fdchangecnt; |
|
|
501 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
|
|
502 | fdchanges [fdchangecnt - 1] = fd; |
|
|
503 | } |
|
|
504 | |
|
|
505 | void inline_speed |
|
|
506 | fd_kill (EV_P_ int fd) |
|
|
507 | { |
|
|
508 | ev_io *w; |
|
|
509 | |
|
|
510 | while ((w = (ev_io *)anfds [fd].head)) |
|
|
511 | { |
|
|
512 | ev_io_stop (EV_A_ w); |
|
|
513 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
514 | } |
|
|
515 | } |
|
|
516 | |
|
|
517 | int inline_size |
|
|
518 | fd_valid (int fd) |
|
|
519 | { |
|
|
520 | #ifdef _WIN32 |
|
|
521 | return _get_osfhandle (fd) != -1; |
|
|
522 | #else |
|
|
523 | return fcntl (fd, F_GETFD) != -1; |
|
|
524 | #endif |
|
|
525 | } |
|
|
526 | |
|
|
527 | /* called on EBADF to verify fds */ |
|
|
528 | static void noinline |
|
|
529 | fd_ebadf (EV_P) |
|
|
530 | { |
|
|
531 | int fd; |
|
|
532 | |
|
|
533 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
534 | if (anfds [fd].events) |
|
|
535 | if (!fd_valid (fd) == -1 && errno == EBADF) |
|
|
536 | fd_kill (EV_A_ fd); |
|
|
537 | } |
|
|
538 | |
|
|
539 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
540 | static void noinline |
|
|
541 | fd_enomem (EV_P) |
|
|
542 | { |
|
|
543 | int fd; |
|
|
544 | |
|
|
545 | for (fd = anfdmax; fd--; ) |
|
|
546 | if (anfds [fd].events) |
|
|
547 | { |
|
|
548 | fd_kill (EV_A_ fd); |
|
|
549 | return; |
76 | } |
550 | } |
|
|
551 | } |
|
|
552 | |
|
|
553 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
|
|
554 | static void noinline |
|
|
555 | fd_rearm_all (EV_P) |
|
|
556 | { |
|
|
557 | int fd; |
|
|
558 | |
|
|
559 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
560 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
561 | if (anfds [fd].events) |
|
|
562 | { |
|
|
563 | anfds [fd].events = 0; |
|
|
564 | fd_change (EV_A_ fd); |
|
|
565 | } |
|
|
566 | } |
|
|
567 | |
|
|
568 | /*****************************************************************************/ |
|
|
569 | |
|
|
570 | void inline_speed |
|
|
571 | upheap (WT *heap, int k) |
|
|
572 | { |
|
|
573 | WT w = heap [k]; |
|
|
574 | |
|
|
575 | while (k && heap [k >> 1]->at > w->at) |
|
|
576 | { |
|
|
577 | heap [k] = heap [k >> 1]; |
|
|
578 | ((W)heap [k])->active = k + 1; |
|
|
579 | k >>= 1; |
|
|
580 | } |
|
|
581 | |
|
|
582 | heap [k] = w; |
|
|
583 | ((W)heap [k])->active = k + 1; |
|
|
584 | |
|
|
585 | } |
|
|
586 | |
|
|
587 | void inline_speed |
|
|
588 | downheap (WT *heap, int N, int k) |
|
|
589 | { |
|
|
590 | WT w = heap [k]; |
|
|
591 | |
|
|
592 | while (k < (N >> 1)) |
|
|
593 | { |
|
|
594 | int j = k << 1; |
|
|
595 | |
|
|
596 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
|
|
597 | ++j; |
|
|
598 | |
|
|
599 | if (w->at <= heap [j]->at) |
|
|
600 | break; |
|
|
601 | |
|
|
602 | heap [k] = heap [j]; |
|
|
603 | ((W)heap [k])->active = k + 1; |
|
|
604 | k = j; |
|
|
605 | } |
|
|
606 | |
|
|
607 | heap [k] = w; |
|
|
608 | ((W)heap [k])->active = k + 1; |
|
|
609 | } |
|
|
610 | |
|
|
611 | void inline_size |
|
|
612 | adjustheap (WT *heap, int N, int k) |
|
|
613 | { |
|
|
614 | upheap (heap, k); |
|
|
615 | downheap (heap, N, k); |
|
|
616 | } |
|
|
617 | |
|
|
618 | /*****************************************************************************/ |
77 | |
619 | |
78 | typedef struct |
620 | typedef struct |
79 | { |
621 | { |
80 | struct ev_io *head; |
622 | WL head; |
81 | unsigned char wev, rev; /* want, received event set */ |
623 | sig_atomic_t volatile gotsig; |
82 | } ANFD; |
624 | } ANSIG; |
83 | |
625 | |
84 | static ANFD *anfds; |
626 | static ANSIG *signals; |
85 | static int anfdmax; |
627 | static int signalmax; |
86 | |
628 | |
87 | static int *fdchanges; |
629 | static int sigpipe [2]; |
88 | static int fdchangemax, fdchangecnt; |
630 | static sig_atomic_t volatile gotsig; |
|
|
631 | static ev_io sigev; |
|
|
632 | |
|
|
633 | void inline_size |
|
|
634 | signals_init (ANSIG *base, int count) |
|
|
635 | { |
|
|
636 | while (count--) |
|
|
637 | { |
|
|
638 | base->head = 0; |
|
|
639 | base->gotsig = 0; |
|
|
640 | |
|
|
641 | ++base; |
|
|
642 | } |
|
|
643 | } |
89 | |
644 | |
90 | static void |
645 | static void |
91 | anfds_init (ANFD *base, int count) |
646 | sighandler (int signum) |
92 | { |
647 | { |
93 | while (count--) |
648 | #if _WIN32 |
94 | { |
649 | signal (signum, sighandler); |
95 | base->head = 0; |
650 | #endif |
96 | base->wev = base->rev = EV_NONE; |
651 | |
97 | ++base; |
652 | signals [signum - 1].gotsig = 1; |
|
|
653 | |
|
|
654 | if (!gotsig) |
98 | } |
655 | { |
|
|
656 | int old_errno = errno; |
|
|
657 | gotsig = 1; |
|
|
658 | write (sigpipe [1], &signum, 1); |
|
|
659 | errno = old_errno; |
|
|
660 | } |
99 | } |
661 | } |
100 | |
662 | |
101 | typedef struct |
663 | void noinline |
|
|
664 | ev_feed_signal_event (EV_P_ int signum) |
102 | { |
665 | { |
103 | struct ev_watcher *w; |
666 | WL w; |
104 | int events; |
|
|
105 | } ANPENDING; |
|
|
106 | |
667 | |
107 | static ANPENDING *pendings; |
668 | #if EV_MULTIPLICITY |
108 | static int pendingmax, pendingcnt; |
669 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
670 | #endif |
|
|
671 | |
|
|
672 | --signum; |
|
|
673 | |
|
|
674 | if (signum < 0 || signum >= signalmax) |
|
|
675 | return; |
|
|
676 | |
|
|
677 | signals [signum].gotsig = 0; |
|
|
678 | |
|
|
679 | for (w = signals [signum].head; w; w = w->next) |
|
|
680 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
681 | } |
109 | |
682 | |
110 | static void |
683 | static void |
111 | event (struct ev_watcher *w, int events) |
684 | sigcb (EV_P_ ev_io *iow, int revents) |
112 | { |
685 | { |
113 | w->pending = ++pendingcnt; |
686 | int signum; |
114 | array_needsize (pendings, pendingmax, pendingcnt, ); |
687 | |
115 | pendings [pendingcnt - 1].w = w; |
688 | read (sigpipe [0], &revents, 1); |
116 | pendings [pendingcnt - 1].events = events; |
689 | gotsig = 0; |
|
|
690 | |
|
|
691 | for (signum = signalmax; signum--; ) |
|
|
692 | if (signals [signum].gotsig) |
|
|
693 | ev_feed_signal_event (EV_A_ signum + 1); |
117 | } |
694 | } |
|
|
695 | |
|
|
696 | void inline_size |
|
|
697 | fd_intern (int fd) |
|
|
698 | { |
|
|
699 | #ifdef _WIN32 |
|
|
700 | int arg = 1; |
|
|
701 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
702 | #else |
|
|
703 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
704 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
705 | #endif |
|
|
706 | } |
|
|
707 | |
|
|
708 | static void noinline |
|
|
709 | siginit (EV_P) |
|
|
710 | { |
|
|
711 | fd_intern (sigpipe [0]); |
|
|
712 | fd_intern (sigpipe [1]); |
|
|
713 | |
|
|
714 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
715 | ev_io_start (EV_A_ &sigev); |
|
|
716 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
717 | } |
|
|
718 | |
|
|
719 | /*****************************************************************************/ |
|
|
720 | |
|
|
721 | static ev_child *childs [EV_PID_HASHSIZE]; |
|
|
722 | |
|
|
723 | #ifndef _WIN32 |
|
|
724 | |
|
|
725 | static ev_signal childev; |
|
|
726 | |
|
|
727 | void inline_speed |
|
|
728 | child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) |
|
|
729 | { |
|
|
730 | ev_child *w; |
|
|
731 | |
|
|
732 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
733 | if (w->pid == pid || !w->pid) |
|
|
734 | { |
|
|
735 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
|
|
736 | w->rpid = pid; |
|
|
737 | w->rstatus = status; |
|
|
738 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
739 | } |
|
|
740 | } |
|
|
741 | |
|
|
742 | #ifndef WCONTINUED |
|
|
743 | # define WCONTINUED 0 |
|
|
744 | #endif |
118 | |
745 | |
119 | static void |
746 | static void |
120 | fd_event (int fd, int events) |
747 | childcb (EV_P_ ev_signal *sw, int revents) |
121 | { |
748 | { |
122 | ANFD *anfd = anfds + fd; |
749 | int pid, status; |
123 | struct ev_io *w; |
|
|
124 | |
750 | |
125 | for (w = anfd->head; w; w = w->next) |
751 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
126 | { |
752 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
127 | int ev = w->events & events; |
753 | if (!WCONTINUED |
|
|
754 | || errno != EINVAL |
|
|
755 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
|
|
756 | return; |
128 | |
757 | |
129 | if (ev) |
758 | /* make sure we are called again until all childs have been reaped */ |
130 | event ((struct ev_watcher *)w, ev); |
759 | /* we need to do it this way so that the callback gets called before we continue */ |
131 | } |
760 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
132 | } |
|
|
133 | |
761 | |
134 | static struct ev_timer **timers; |
762 | child_reap (EV_A_ sw, pid, pid, status); |
135 | static int timermax, timercnt; |
763 | if (EV_PID_HASHSIZE > 1) |
|
|
764 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
|
|
765 | } |
|
|
766 | |
|
|
767 | #endif |
|
|
768 | |
|
|
769 | /*****************************************************************************/ |
|
|
770 | |
|
|
771 | #if EV_USE_PORT |
|
|
772 | # include "ev_port.c" |
|
|
773 | #endif |
|
|
774 | #if EV_USE_KQUEUE |
|
|
775 | # include "ev_kqueue.c" |
|
|
776 | #endif |
|
|
777 | #if EV_USE_EPOLL |
|
|
778 | # include "ev_epoll.c" |
|
|
779 | #endif |
|
|
780 | #if EV_USE_POLL |
|
|
781 | # include "ev_poll.c" |
|
|
782 | #endif |
|
|
783 | #if EV_USE_SELECT |
|
|
784 | # include "ev_select.c" |
|
|
785 | #endif |
|
|
786 | |
|
|
787 | int |
|
|
788 | ev_version_major (void) |
|
|
789 | { |
|
|
790 | return EV_VERSION_MAJOR; |
|
|
791 | } |
|
|
792 | |
|
|
793 | int |
|
|
794 | ev_version_minor (void) |
|
|
795 | { |
|
|
796 | return EV_VERSION_MINOR; |
|
|
797 | } |
|
|
798 | |
|
|
799 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
800 | int inline_size |
|
|
801 | enable_secure (void) |
|
|
802 | { |
|
|
803 | #ifdef _WIN32 |
|
|
804 | return 0; |
|
|
805 | #else |
|
|
806 | return getuid () != geteuid () |
|
|
807 | || getgid () != getegid (); |
|
|
808 | #endif |
|
|
809 | } |
|
|
810 | |
|
|
811 | unsigned int |
|
|
812 | ev_supported_backends (void) |
|
|
813 | { |
|
|
814 | unsigned int flags = 0; |
|
|
815 | |
|
|
816 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
817 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
818 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
819 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
820 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
821 | |
|
|
822 | return flags; |
|
|
823 | } |
|
|
824 | |
|
|
825 | unsigned int |
|
|
826 | ev_recommended_backends (void) |
|
|
827 | { |
|
|
828 | unsigned int flags = ev_supported_backends (); |
|
|
829 | |
|
|
830 | #ifndef __NetBSD__ |
|
|
831 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
832 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
833 | flags &= ~EVBACKEND_KQUEUE; |
|
|
834 | #endif |
|
|
835 | #ifdef __APPLE__ |
|
|
836 | // flags &= ~EVBACKEND_KQUEUE; for documentation |
|
|
837 | flags &= ~EVBACKEND_POLL; |
|
|
838 | #endif |
|
|
839 | |
|
|
840 | return flags; |
|
|
841 | } |
|
|
842 | |
|
|
843 | unsigned int |
|
|
844 | ev_embeddable_backends (void) |
|
|
845 | { |
|
|
846 | return EVBACKEND_EPOLL |
|
|
847 | | EVBACKEND_KQUEUE |
|
|
848 | | EVBACKEND_PORT; |
|
|
849 | } |
|
|
850 | |
|
|
851 | unsigned int |
|
|
852 | ev_backend (EV_P) |
|
|
853 | { |
|
|
854 | return backend; |
|
|
855 | } |
136 | |
856 | |
137 | static void |
857 | static void |
138 | upheap (int k) |
858 | loop_init (EV_P_ unsigned int flags) |
139 | { |
859 | { |
140 | struct ev_timer *w = timers [k]; |
860 | if (!backend) |
141 | |
861 | { |
142 | while (k && timers [k >> 1]->at > w->at) |
862 | #if EV_USE_MONOTONIC |
143 | { |
863 | { |
144 | timers [k] = timers [k >> 1]; |
864 | struct timespec ts; |
145 | timers [k]->active = k + 1; |
865 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
146 | k >>= 1; |
866 | have_monotonic = 1; |
147 | } |
867 | } |
|
|
868 | #endif |
148 | |
869 | |
149 | timers [k] = w; |
870 | ev_rt_now = ev_time (); |
150 | timers [k]->active = k + 1; |
871 | mn_now = get_clock (); |
|
|
872 | now_floor = mn_now; |
|
|
873 | rtmn_diff = ev_rt_now - mn_now; |
151 | |
874 | |
|
|
875 | if (!(flags & EVFLAG_NOENV) |
|
|
876 | && !enable_secure () |
|
|
877 | && getenv ("LIBEV_FLAGS")) |
|
|
878 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
879 | |
|
|
880 | if (!(flags & 0x0000ffffUL)) |
|
|
881 | flags |= ev_recommended_backends (); |
|
|
882 | |
|
|
883 | backend = 0; |
|
|
884 | #if EV_USE_PORT |
|
|
885 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
886 | #endif |
|
|
887 | #if EV_USE_KQUEUE |
|
|
888 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
889 | #endif |
|
|
890 | #if EV_USE_EPOLL |
|
|
891 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
|
|
892 | #endif |
|
|
893 | #if EV_USE_POLL |
|
|
894 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
|
|
895 | #endif |
|
|
896 | #if EV_USE_SELECT |
|
|
897 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
|
|
898 | #endif |
|
|
899 | |
|
|
900 | ev_init (&sigev, sigcb); |
|
|
901 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
902 | } |
152 | } |
903 | } |
153 | |
904 | |
154 | static void |
905 | static void |
155 | downheap (int k) |
906 | loop_destroy (EV_P) |
156 | { |
907 | { |
157 | struct ev_timer *w = timers [k]; |
908 | int i; |
158 | |
909 | |
159 | while (k < (timercnt >> 1)) |
910 | #if EV_USE_PORT |
160 | { |
911 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
161 | int j = k << 1; |
912 | #endif |
|
|
913 | #if EV_USE_KQUEUE |
|
|
914 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
915 | #endif |
|
|
916 | #if EV_USE_EPOLL |
|
|
917 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
918 | #endif |
|
|
919 | #if EV_USE_POLL |
|
|
920 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
921 | #endif |
|
|
922 | #if EV_USE_SELECT |
|
|
923 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
924 | #endif |
162 | |
925 | |
163 | if (j + 1 < timercnt && timers [j]->at > timers [j + 1]->at) |
926 | for (i = NUMPRI; i--; ) |
164 | ++j; |
927 | array_free (pending, [i]); |
165 | |
928 | |
166 | if (w->at <= timers [j]->at) |
929 | /* have to use the microsoft-never-gets-it-right macro */ |
167 | break; |
930 | array_free (fdchange, EMPTY0); |
|
|
931 | array_free (timer, EMPTY0); |
|
|
932 | #if EV_PERIODIC_ENABLE |
|
|
933 | array_free (periodic, EMPTY0); |
|
|
934 | #endif |
|
|
935 | array_free (idle, EMPTY0); |
|
|
936 | array_free (prepare, EMPTY0); |
|
|
937 | array_free (check, EMPTY0); |
168 | |
938 | |
169 | timers [k] = timers [j]; |
939 | backend = 0; |
170 | timers [k]->active = k + 1; |
|
|
171 | k = j; |
|
|
172 | } |
|
|
173 | |
|
|
174 | timers [k] = w; |
|
|
175 | timers [k]->active = k + 1; |
|
|
176 | } |
940 | } |
177 | |
|
|
178 | static struct ev_signal **signals; |
|
|
179 | static int signalmax, signalcnt; |
|
|
180 | |
941 | |
181 | static void |
942 | static void |
182 | signals_init (struct ev_signal **base, int count) |
943 | loop_fork (EV_P) |
183 | { |
944 | { |
184 | while (count--) |
945 | #if EV_USE_PORT |
185 | *base++ = 0; |
946 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
186 | } |
947 | #endif |
187 | |
948 | #if EV_USE_KQUEUE |
|
|
949 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
950 | #endif |
188 | #if HAVE_EPOLL |
951 | #if EV_USE_EPOLL |
189 | # include "ev_epoll.c" |
952 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
190 | #endif |
953 | #endif |
191 | #if HAVE_SELECT |
|
|
192 | # include "ev_select.c" |
|
|
193 | #endif |
|
|
194 | |
954 | |
195 | int ev_init (int flags) |
955 | if (ev_is_active (&sigev)) |
196 | { |
|
|
197 | #if HAVE_MONOTONIC |
|
|
198 | { |
956 | { |
199 | struct timespec ts; |
957 | /* default loop */ |
200 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
201 | have_monotonic = 1; |
|
|
202 | } |
|
|
203 | #endif |
|
|
204 | |
958 | |
205 | ev_now = ev_time (); |
959 | ev_ref (EV_A); |
|
|
960 | ev_io_stop (EV_A_ &sigev); |
|
|
961 | close (sigpipe [0]); |
|
|
962 | close (sigpipe [1]); |
206 | |
963 | |
207 | #if HAVE_EPOLL |
964 | while (pipe (sigpipe)) |
208 | if (epoll_init (flags)) |
965 | syserr ("(libev) error creating pipe"); |
209 | return ev_method; |
|
|
210 | #endif |
|
|
211 | #if HAVE_SELECT |
|
|
212 | if (select_init (flags)) |
|
|
213 | return ev_method; |
|
|
214 | #endif |
|
|
215 | |
966 | |
216 | ev_method = EVMETHOD_NONE; |
967 | siginit (EV_A); |
217 | return ev_method; |
|
|
218 | } |
|
|
219 | |
|
|
220 | void ev_prefork (void) |
|
|
221 | { |
|
|
222 | } |
|
|
223 | |
|
|
224 | void ev_postfork_parent (void) |
|
|
225 | { |
|
|
226 | } |
|
|
227 | |
|
|
228 | void ev_postfork_child (void) |
|
|
229 | { |
|
|
230 | #if HAVE_EPOLL |
|
|
231 | epoll_postfork_child (); |
|
|
232 | #endif |
|
|
233 | } |
|
|
234 | |
|
|
235 | static void |
|
|
236 | call_pending () |
|
|
237 | { |
|
|
238 | int i; |
|
|
239 | |
|
|
240 | for (i = 0; i < pendingcnt; ++i) |
|
|
241 | { |
968 | } |
242 | ANPENDING *p = pendings + i; |
|
|
243 | |
969 | |
244 | if (p->w) |
970 | postfork = 0; |
|
|
971 | } |
|
|
972 | |
|
|
973 | #if EV_MULTIPLICITY |
|
|
974 | struct ev_loop * |
|
|
975 | ev_loop_new (unsigned int flags) |
|
|
976 | { |
|
|
977 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
978 | |
|
|
979 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
980 | |
|
|
981 | loop_init (EV_A_ flags); |
|
|
982 | |
|
|
983 | if (ev_backend (EV_A)) |
|
|
984 | return loop; |
|
|
985 | |
|
|
986 | return 0; |
|
|
987 | } |
|
|
988 | |
|
|
989 | void |
|
|
990 | ev_loop_destroy (EV_P) |
|
|
991 | { |
|
|
992 | loop_destroy (EV_A); |
|
|
993 | ev_free (loop); |
|
|
994 | } |
|
|
995 | |
|
|
996 | void |
|
|
997 | ev_loop_fork (EV_P) |
|
|
998 | { |
|
|
999 | postfork = 1; |
|
|
1000 | } |
|
|
1001 | |
|
|
1002 | #endif |
|
|
1003 | |
|
|
1004 | #if EV_MULTIPLICITY |
|
|
1005 | struct ev_loop * |
|
|
1006 | ev_default_loop_init (unsigned int flags) |
|
|
1007 | #else |
|
|
1008 | int |
|
|
1009 | ev_default_loop (unsigned int flags) |
|
|
1010 | #endif |
|
|
1011 | { |
|
|
1012 | if (sigpipe [0] == sigpipe [1]) |
|
|
1013 | if (pipe (sigpipe)) |
|
|
1014 | return 0; |
|
|
1015 | |
|
|
1016 | if (!ev_default_loop_ptr) |
|
|
1017 | { |
|
|
1018 | #if EV_MULTIPLICITY |
|
|
1019 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
|
|
1020 | #else |
|
|
1021 | ev_default_loop_ptr = 1; |
|
|
1022 | #endif |
|
|
1023 | |
|
|
1024 | loop_init (EV_A_ flags); |
|
|
1025 | |
|
|
1026 | if (ev_backend (EV_A)) |
245 | { |
1027 | { |
246 | p->w->pending = 0; |
1028 | siginit (EV_A); |
247 | p->w->cb (p->w, p->events); |
1029 | |
|
|
1030 | #ifndef _WIN32 |
|
|
1031 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
1032 | ev_set_priority (&childev, EV_MAXPRI); |
|
|
1033 | ev_signal_start (EV_A_ &childev); |
|
|
1034 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
1035 | #endif |
248 | } |
1036 | } |
|
|
1037 | else |
|
|
1038 | ev_default_loop_ptr = 0; |
|
|
1039 | } |
|
|
1040 | |
|
|
1041 | return ev_default_loop_ptr; |
|
|
1042 | } |
|
|
1043 | |
|
|
1044 | void |
|
|
1045 | ev_default_destroy (void) |
|
|
1046 | { |
|
|
1047 | #if EV_MULTIPLICITY |
|
|
1048 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1049 | #endif |
|
|
1050 | |
|
|
1051 | #ifndef _WIN32 |
|
|
1052 | ev_ref (EV_A); /* child watcher */ |
|
|
1053 | ev_signal_stop (EV_A_ &childev); |
|
|
1054 | #endif |
|
|
1055 | |
|
|
1056 | ev_ref (EV_A); /* signal watcher */ |
|
|
1057 | ev_io_stop (EV_A_ &sigev); |
|
|
1058 | |
|
|
1059 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
1060 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
1061 | |
|
|
1062 | loop_destroy (EV_A); |
|
|
1063 | } |
|
|
1064 | |
|
|
1065 | void |
|
|
1066 | ev_default_fork (void) |
|
|
1067 | { |
|
|
1068 | #if EV_MULTIPLICITY |
|
|
1069 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1070 | #endif |
|
|
1071 | |
|
|
1072 | if (backend) |
|
|
1073 | postfork = 1; |
|
|
1074 | } |
|
|
1075 | |
|
|
1076 | /*****************************************************************************/ |
|
|
1077 | |
|
|
1078 | int inline_size |
|
|
1079 | any_pending (EV_P) |
|
|
1080 | { |
|
|
1081 | int pri; |
|
|
1082 | |
|
|
1083 | for (pri = NUMPRI; pri--; ) |
|
|
1084 | if (pendingcnt [pri]) |
|
|
1085 | return 1; |
|
|
1086 | |
|
|
1087 | return 0; |
|
|
1088 | } |
|
|
1089 | |
|
|
1090 | void inline_speed |
|
|
1091 | call_pending (EV_P) |
|
|
1092 | { |
|
|
1093 | int pri; |
|
|
1094 | |
|
|
1095 | for (pri = NUMPRI; pri--; ) |
|
|
1096 | while (pendingcnt [pri]) |
|
|
1097 | { |
|
|
1098 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
|
|
1099 | |
|
|
1100 | if (expect_true (p->w)) |
|
|
1101 | { |
|
|
1102 | assert (("non-pending watcher on pending list", p->w->pending)); |
|
|
1103 | |
|
|
1104 | p->w->pending = 0; |
|
|
1105 | EV_CB_INVOKE (p->w, p->events); |
|
|
1106 | } |
249 | } |
1107 | } |
250 | |
|
|
251 | pendingcnt = 0; |
|
|
252 | } |
1108 | } |
253 | |
1109 | |
254 | static void |
1110 | void inline_size |
255 | timer_reify (void) |
1111 | timers_reify (EV_P) |
256 | { |
1112 | { |
257 | while (timercnt && timers [0]->at <= ev_now) |
1113 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
258 | { |
1114 | { |
259 | struct ev_timer *w = timers [0]; |
1115 | ev_timer *w = timers [0]; |
260 | |
1116 | |
|
|
1117 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
|
|
1118 | |
261 | /* first reschedule timer */ |
1119 | /* first reschedule or stop timer */ |
262 | if (w->repeat) |
1120 | if (w->repeat) |
263 | { |
1121 | { |
264 | if (w->is_abs) |
1122 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
265 | w->at += ceil ((ev_now - w->at) / w->repeat + 1.) * w->repeat; |
1123 | |
266 | else |
|
|
267 | w->at = ev_now + w->repeat; |
1124 | ((WT)w)->at += w->repeat; |
|
|
1125 | if (((WT)w)->at < mn_now) |
|
|
1126 | ((WT)w)->at = mn_now; |
268 | |
1127 | |
269 | downheap (0); |
1128 | downheap ((WT *)timers, timercnt, 0); |
270 | } |
1129 | } |
271 | else |
1130 | else |
272 | evtimer_stop (w); /* nonrepeating: stop timer */ |
1131 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
273 | |
1132 | |
274 | event ((struct ev_watcher *)w, EV_TIMEOUT); |
1133 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
275 | } |
|
|
276 | } |
|
|
277 | |
|
|
278 | int ev_loop_done; |
|
|
279 | |
|
|
280 | int ev_loop (int flags) |
|
|
281 | { |
|
|
282 | double block; |
|
|
283 | ev_loop_done = flags & EVLOOP_ONESHOT; |
|
|
284 | |
|
|
285 | do |
|
|
286 | { |
1134 | } |
|
|
1135 | } |
|
|
1136 | |
|
|
1137 | #if EV_PERIODIC_ENABLE |
|
|
1138 | void inline_size |
|
|
1139 | periodics_reify (EV_P) |
|
|
1140 | { |
|
|
1141 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
|
|
1142 | { |
|
|
1143 | ev_periodic *w = periodics [0]; |
|
|
1144 | |
|
|
1145 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
|
|
1146 | |
|
|
1147 | /* first reschedule or stop timer */ |
|
|
1148 | if (w->reschedule_cb) |
|
|
1149 | { |
|
|
1150 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); |
|
|
1151 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
|
|
1152 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1153 | } |
|
|
1154 | else if (w->interval) |
|
|
1155 | { |
|
|
1156 | ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
|
|
1157 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
|
|
1158 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1159 | } |
|
|
1160 | else |
|
|
1161 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1162 | |
|
|
1163 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
|
|
1164 | } |
|
|
1165 | } |
|
|
1166 | |
|
|
1167 | static void noinline |
|
|
1168 | periodics_reschedule (EV_P) |
|
|
1169 | { |
|
|
1170 | int i; |
|
|
1171 | |
|
|
1172 | /* adjust periodics after time jump */ |
|
|
1173 | for (i = 0; i < periodiccnt; ++i) |
|
|
1174 | { |
|
|
1175 | ev_periodic *w = periodics [i]; |
|
|
1176 | |
|
|
1177 | if (w->reschedule_cb) |
|
|
1178 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1179 | else if (w->interval) |
|
|
1180 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1181 | } |
|
|
1182 | |
|
|
1183 | /* now rebuild the heap */ |
|
|
1184 | for (i = periodiccnt >> 1; i--; ) |
|
|
1185 | downheap ((WT *)periodics, periodiccnt, i); |
|
|
1186 | } |
|
|
1187 | #endif |
|
|
1188 | |
|
|
1189 | int inline_size |
|
|
1190 | time_update_monotonic (EV_P) |
|
|
1191 | { |
|
|
1192 | mn_now = get_clock (); |
|
|
1193 | |
|
|
1194 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
1195 | { |
|
|
1196 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1197 | return 0; |
|
|
1198 | } |
|
|
1199 | else |
|
|
1200 | { |
|
|
1201 | now_floor = mn_now; |
|
|
1202 | ev_rt_now = ev_time (); |
|
|
1203 | return 1; |
|
|
1204 | } |
|
|
1205 | } |
|
|
1206 | |
|
|
1207 | void inline_size |
|
|
1208 | time_update (EV_P) |
|
|
1209 | { |
|
|
1210 | int i; |
|
|
1211 | |
|
|
1212 | #if EV_USE_MONOTONIC |
|
|
1213 | if (expect_true (have_monotonic)) |
|
|
1214 | { |
|
|
1215 | if (time_update_monotonic (EV_A)) |
|
|
1216 | { |
|
|
1217 | ev_tstamp odiff = rtmn_diff; |
|
|
1218 | |
|
|
1219 | /* loop a few times, before making important decisions. |
|
|
1220 | * on the choice of "4": one iteration isn't enough, |
|
|
1221 | * in case we get preempted during the calls to |
|
|
1222 | * ev_time and get_clock. a second call is almost guarenteed |
|
|
1223 | * to succeed in that case, though. and looping a few more times |
|
|
1224 | * doesn't hurt either as we only do this on time-jumps or |
|
|
1225 | * in the unlikely event of getting preempted here. |
|
|
1226 | */ |
|
|
1227 | for (i = 4; --i; ) |
|
|
1228 | { |
|
|
1229 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1230 | |
|
|
1231 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
|
|
1232 | return; /* all is well */ |
|
|
1233 | |
|
|
1234 | ev_rt_now = ev_time (); |
|
|
1235 | mn_now = get_clock (); |
|
|
1236 | now_floor = mn_now; |
|
|
1237 | } |
|
|
1238 | |
|
|
1239 | # if EV_PERIODIC_ENABLE |
|
|
1240 | periodics_reschedule (EV_A); |
|
|
1241 | # endif |
|
|
1242 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1243 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
1244 | } |
|
|
1245 | } |
|
|
1246 | else |
|
|
1247 | #endif |
|
|
1248 | { |
|
|
1249 | ev_rt_now = ev_time (); |
|
|
1250 | |
|
|
1251 | if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
|
|
1252 | { |
|
|
1253 | #if EV_PERIODIC_ENABLE |
|
|
1254 | periodics_reschedule (EV_A); |
|
|
1255 | #endif |
|
|
1256 | |
|
|
1257 | /* adjust timers. this is easy, as the offset is the same for all */ |
|
|
1258 | for (i = 0; i < timercnt; ++i) |
|
|
1259 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
|
|
1260 | } |
|
|
1261 | |
|
|
1262 | mn_now = ev_rt_now; |
|
|
1263 | } |
|
|
1264 | } |
|
|
1265 | |
|
|
1266 | void |
|
|
1267 | ev_ref (EV_P) |
|
|
1268 | { |
|
|
1269 | ++activecnt; |
|
|
1270 | } |
|
|
1271 | |
|
|
1272 | void |
|
|
1273 | ev_unref (EV_P) |
|
|
1274 | { |
|
|
1275 | --activecnt; |
|
|
1276 | } |
|
|
1277 | |
|
|
1278 | static int loop_done; |
|
|
1279 | |
|
|
1280 | void |
|
|
1281 | ev_loop (EV_P_ int flags) |
|
|
1282 | { |
|
|
1283 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) |
|
|
1284 | ? EVUNLOOP_ONE |
|
|
1285 | : EVUNLOOP_CANCEL; |
|
|
1286 | |
|
|
1287 | while (activecnt) |
|
|
1288 | { |
|
|
1289 | /* we might have forked, so reify kernel state if necessary */ |
|
|
1290 | #if EV_FORK_ENABLE |
|
|
1291 | if (expect_false (postfork)) |
|
|
1292 | if (forkcnt) |
|
|
1293 | { |
|
|
1294 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
1295 | call_pending (EV_A); |
|
|
1296 | } |
|
|
1297 | #endif |
|
|
1298 | |
|
|
1299 | /* queue check watchers (and execute them) */ |
|
|
1300 | if (expect_false (preparecnt)) |
|
|
1301 | { |
|
|
1302 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
|
|
1303 | call_pending (EV_A); |
|
|
1304 | } |
|
|
1305 | |
|
|
1306 | /* we might have forked, so reify kernel state if necessary */ |
|
|
1307 | if (expect_false (postfork)) |
|
|
1308 | loop_fork (EV_A); |
|
|
1309 | |
287 | /* update fd-related kernel structures */ |
1310 | /* update fd-related kernel structures */ |
288 | method_reify (); fdchangecnt = 0; |
1311 | fd_reify (EV_A); |
289 | |
1312 | |
290 | /* calculate blocking time */ |
1313 | /* calculate blocking time */ |
291 | ev_now = ev_time (); |
1314 | { |
|
|
1315 | double block; |
292 | |
1316 | |
293 | if (flags & EVLOOP_NONBLOCK) |
1317 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
294 | block = 0.; |
1318 | block = 0.; /* do not block at all */ |
295 | else if (!timercnt) |
1319 | else |
|
|
1320 | { |
|
|
1321 | /* update time to cancel out callback processing overhead */ |
|
|
1322 | #if EV_USE_MONOTONIC |
|
|
1323 | if (expect_true (have_monotonic)) |
|
|
1324 | time_update_monotonic (EV_A); |
|
|
1325 | else |
|
|
1326 | #endif |
|
|
1327 | { |
|
|
1328 | ev_rt_now = ev_time (); |
|
|
1329 | mn_now = ev_rt_now; |
|
|
1330 | } |
|
|
1331 | |
296 | block = MAX_BLOCKTIME; |
1332 | block = MAX_BLOCKTIME; |
297 | else |
1333 | |
|
|
1334 | if (timercnt) |
298 | { |
1335 | { |
299 | block = timers [0]->at - ev_now + method_fudge; |
1336 | ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; |
|
|
1337 | if (block > to) block = to; |
|
|
1338 | } |
|
|
1339 | |
|
|
1340 | #if EV_PERIODIC_ENABLE |
|
|
1341 | if (periodiccnt) |
|
|
1342 | { |
|
|
1343 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; |
|
|
1344 | if (block > to) block = to; |
|
|
1345 | } |
|
|
1346 | #endif |
|
|
1347 | |
300 | if (block < 0.) block = 0.; |
1348 | if (expect_false (block < 0.)) block = 0.; |
301 | else if (block > MAX_BLOCKTIME) block = MAX_BLOCKTIME; |
|
|
302 | } |
1349 | } |
303 | |
1350 | |
304 | method_poll (block); |
1351 | backend_poll (EV_A_ block); |
|
|
1352 | } |
305 | |
1353 | |
|
|
1354 | /* update ev_rt_now, do magic */ |
|
|
1355 | time_update (EV_A); |
|
|
1356 | |
306 | /* put pending timers into pendign queue and reschedule them */ |
1357 | /* queue pending timers and reschedule them */ |
307 | timer_reify (); |
1358 | timers_reify (EV_A); /* relative timers called last */ |
|
|
1359 | #if EV_PERIODIC_ENABLE |
|
|
1360 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
1361 | #endif |
308 | |
1362 | |
309 | ev_now = ev_time (); |
1363 | /* queue idle watchers unless other events are pending */ |
|
|
1364 | if (idlecnt && !any_pending (EV_A)) |
|
|
1365 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
|
|
1366 | |
|
|
1367 | /* queue check watchers, to be executed first */ |
|
|
1368 | if (expect_false (checkcnt)) |
|
|
1369 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
|
|
1370 | |
310 | call_pending (); |
1371 | call_pending (EV_A); |
311 | } |
|
|
312 | while (!ev_loop_done); |
|
|
313 | } |
|
|
314 | |
1372 | |
315 | static void |
1373 | if (expect_false (loop_done)) |
316 | wlist_add (struct ev_watcher_list **head, struct ev_watcher_list *elem) |
1374 | break; |
|
|
1375 | } |
|
|
1376 | |
|
|
1377 | if (loop_done == EVUNLOOP_ONE) |
|
|
1378 | loop_done = EVUNLOOP_CANCEL; |
|
|
1379 | } |
|
|
1380 | |
|
|
1381 | void |
|
|
1382 | ev_unloop (EV_P_ int how) |
|
|
1383 | { |
|
|
1384 | loop_done = how; |
|
|
1385 | } |
|
|
1386 | |
|
|
1387 | /*****************************************************************************/ |
|
|
1388 | |
|
|
1389 | void inline_size |
|
|
1390 | wlist_add (WL *head, WL elem) |
317 | { |
1391 | { |
318 | elem->next = *head; |
1392 | elem->next = *head; |
319 | *head = elem; |
1393 | *head = elem; |
320 | } |
1394 | } |
321 | |
1395 | |
322 | static void |
1396 | void inline_size |
323 | wlist_del (struct ev_watcher_list **head, struct ev_watcher_list *elem) |
1397 | wlist_del (WL *head, WL elem) |
324 | { |
1398 | { |
325 | while (*head) |
1399 | while (*head) |
326 | { |
1400 | { |
327 | if (*head == elem) |
1401 | if (*head == elem) |
328 | { |
1402 | { |
… | |
… | |
332 | |
1406 | |
333 | head = &(*head)->next; |
1407 | head = &(*head)->next; |
334 | } |
1408 | } |
335 | } |
1409 | } |
336 | |
1410 | |
|
|
1411 | void inline_speed |
|
|
1412 | ev_clear_pending (EV_P_ W w) |
|
|
1413 | { |
|
|
1414 | if (w->pending) |
|
|
1415 | { |
|
|
1416 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
|
|
1417 | w->pending = 0; |
|
|
1418 | } |
|
|
1419 | } |
|
|
1420 | |
|
|
1421 | void inline_speed |
|
|
1422 | ev_start (EV_P_ W w, int active) |
|
|
1423 | { |
|
|
1424 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1425 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1426 | |
|
|
1427 | w->active = active; |
|
|
1428 | ev_ref (EV_A); |
|
|
1429 | } |
|
|
1430 | |
|
|
1431 | void inline_size |
|
|
1432 | ev_stop (EV_P_ W w) |
|
|
1433 | { |
|
|
1434 | ev_unref (EV_A); |
|
|
1435 | w->active = 0; |
|
|
1436 | } |
|
|
1437 | |
|
|
1438 | /*****************************************************************************/ |
|
|
1439 | |
|
|
1440 | void |
|
|
1441 | ev_io_start (EV_P_ ev_io *w) |
|
|
1442 | { |
|
|
1443 | int fd = w->fd; |
|
|
1444 | |
|
|
1445 | if (expect_false (ev_is_active (w))) |
|
|
1446 | return; |
|
|
1447 | |
|
|
1448 | assert (("ev_io_start called with negative fd", fd >= 0)); |
|
|
1449 | |
|
|
1450 | ev_start (EV_A_ (W)w, 1); |
|
|
1451 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
|
|
1452 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
|
|
1453 | |
|
|
1454 | fd_change (EV_A_ fd); |
|
|
1455 | } |
|
|
1456 | |
|
|
1457 | void |
|
|
1458 | ev_io_stop (EV_P_ ev_io *w) |
|
|
1459 | { |
|
|
1460 | ev_clear_pending (EV_A_ (W)w); |
|
|
1461 | if (expect_false (!ev_is_active (w))) |
|
|
1462 | return; |
|
|
1463 | |
|
|
1464 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
1465 | |
|
|
1466 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
|
|
1467 | ev_stop (EV_A_ (W)w); |
|
|
1468 | |
|
|
1469 | fd_change (EV_A_ w->fd); |
|
|
1470 | } |
|
|
1471 | |
|
|
1472 | void |
|
|
1473 | ev_timer_start (EV_P_ ev_timer *w) |
|
|
1474 | { |
|
|
1475 | if (expect_false (ev_is_active (w))) |
|
|
1476 | return; |
|
|
1477 | |
|
|
1478 | ((WT)w)->at += mn_now; |
|
|
1479 | |
|
|
1480 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
|
|
1481 | |
|
|
1482 | ev_start (EV_A_ (W)w, ++timercnt); |
|
|
1483 | array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); |
|
|
1484 | timers [timercnt - 1] = w; |
|
|
1485 | upheap ((WT *)timers, timercnt - 1); |
|
|
1486 | |
|
|
1487 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1488 | } |
|
|
1489 | |
|
|
1490 | void |
|
|
1491 | ev_timer_stop (EV_P_ ev_timer *w) |
|
|
1492 | { |
|
|
1493 | ev_clear_pending (EV_A_ (W)w); |
|
|
1494 | if (expect_false (!ev_is_active (w))) |
|
|
1495 | return; |
|
|
1496 | |
|
|
1497 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1498 | |
|
|
1499 | if (expect_true (((W)w)->active < timercnt--)) |
|
|
1500 | { |
|
|
1501 | timers [((W)w)->active - 1] = timers [timercnt]; |
|
|
1502 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
|
|
1503 | } |
|
|
1504 | |
|
|
1505 | ((WT)w)->at -= mn_now; |
|
|
1506 | |
|
|
1507 | ev_stop (EV_A_ (W)w); |
|
|
1508 | } |
|
|
1509 | |
|
|
1510 | void |
|
|
1511 | ev_timer_again (EV_P_ ev_timer *w) |
|
|
1512 | { |
|
|
1513 | if (ev_is_active (w)) |
|
|
1514 | { |
|
|
1515 | if (w->repeat) |
|
|
1516 | { |
|
|
1517 | ((WT)w)->at = mn_now + w->repeat; |
|
|
1518 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
|
|
1519 | } |
|
|
1520 | else |
|
|
1521 | ev_timer_stop (EV_A_ w); |
|
|
1522 | } |
|
|
1523 | else if (w->repeat) |
|
|
1524 | { |
|
|
1525 | w->at = w->repeat; |
|
|
1526 | ev_timer_start (EV_A_ w); |
|
|
1527 | } |
|
|
1528 | } |
|
|
1529 | |
|
|
1530 | #if EV_PERIODIC_ENABLE |
|
|
1531 | void |
|
|
1532 | ev_periodic_start (EV_P_ ev_periodic *w) |
|
|
1533 | { |
|
|
1534 | if (expect_false (ev_is_active (w))) |
|
|
1535 | return; |
|
|
1536 | |
|
|
1537 | if (w->reschedule_cb) |
|
|
1538 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1539 | else if (w->interval) |
|
|
1540 | { |
|
|
1541 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
|
|
1542 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
|
|
1543 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1544 | } |
|
|
1545 | |
|
|
1546 | ev_start (EV_A_ (W)w, ++periodiccnt); |
|
|
1547 | array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); |
|
|
1548 | periodics [periodiccnt - 1] = w; |
|
|
1549 | upheap ((WT *)periodics, periodiccnt - 1); |
|
|
1550 | |
|
|
1551 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1552 | } |
|
|
1553 | |
|
|
1554 | void |
|
|
1555 | ev_periodic_stop (EV_P_ ev_periodic *w) |
|
|
1556 | { |
|
|
1557 | ev_clear_pending (EV_A_ (W)w); |
|
|
1558 | if (expect_false (!ev_is_active (w))) |
|
|
1559 | return; |
|
|
1560 | |
|
|
1561 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1562 | |
|
|
1563 | if (expect_true (((W)w)->active < periodiccnt--)) |
|
|
1564 | { |
|
|
1565 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
|
|
1566 | adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
|
|
1567 | } |
|
|
1568 | |
|
|
1569 | ev_stop (EV_A_ (W)w); |
|
|
1570 | } |
|
|
1571 | |
|
|
1572 | void |
|
|
1573 | ev_periodic_again (EV_P_ ev_periodic *w) |
|
|
1574 | { |
|
|
1575 | /* TODO: use adjustheap and recalculation */ |
|
|
1576 | ev_periodic_stop (EV_A_ w); |
|
|
1577 | ev_periodic_start (EV_A_ w); |
|
|
1578 | } |
|
|
1579 | #endif |
|
|
1580 | |
|
|
1581 | #ifndef SA_RESTART |
|
|
1582 | # define SA_RESTART 0 |
|
|
1583 | #endif |
|
|
1584 | |
|
|
1585 | void |
|
|
1586 | ev_signal_start (EV_P_ ev_signal *w) |
|
|
1587 | { |
|
|
1588 | #if EV_MULTIPLICITY |
|
|
1589 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1590 | #endif |
|
|
1591 | if (expect_false (ev_is_active (w))) |
|
|
1592 | return; |
|
|
1593 | |
|
|
1594 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1595 | |
|
|
1596 | ev_start (EV_A_ (W)w, 1); |
|
|
1597 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
|
|
1598 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
1599 | |
|
|
1600 | if (!((WL)w)->next) |
|
|
1601 | { |
|
|
1602 | #if _WIN32 |
|
|
1603 | signal (w->signum, sighandler); |
|
|
1604 | #else |
|
|
1605 | struct sigaction sa; |
|
|
1606 | sa.sa_handler = sighandler; |
|
|
1607 | sigfillset (&sa.sa_mask); |
|
|
1608 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
1609 | sigaction (w->signum, &sa, 0); |
|
|
1610 | #endif |
|
|
1611 | } |
|
|
1612 | } |
|
|
1613 | |
|
|
1614 | void |
|
|
1615 | ev_signal_stop (EV_P_ ev_signal *w) |
|
|
1616 | { |
|
|
1617 | ev_clear_pending (EV_A_ (W)w); |
|
|
1618 | if (expect_false (!ev_is_active (w))) |
|
|
1619 | return; |
|
|
1620 | |
|
|
1621 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
1622 | ev_stop (EV_A_ (W)w); |
|
|
1623 | |
|
|
1624 | if (!signals [w->signum - 1].head) |
|
|
1625 | signal (w->signum, SIG_DFL); |
|
|
1626 | } |
|
|
1627 | |
|
|
1628 | void |
|
|
1629 | ev_child_start (EV_P_ ev_child *w) |
|
|
1630 | { |
|
|
1631 | #if EV_MULTIPLICITY |
|
|
1632 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1633 | #endif |
|
|
1634 | if (expect_false (ev_is_active (w))) |
|
|
1635 | return; |
|
|
1636 | |
|
|
1637 | ev_start (EV_A_ (W)w, 1); |
|
|
1638 | wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
|
|
1639 | } |
|
|
1640 | |
|
|
1641 | void |
|
|
1642 | ev_child_stop (EV_P_ ev_child *w) |
|
|
1643 | { |
|
|
1644 | ev_clear_pending (EV_A_ (W)w); |
|
|
1645 | if (expect_false (!ev_is_active (w))) |
|
|
1646 | return; |
|
|
1647 | |
|
|
1648 | wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
|
|
1649 | ev_stop (EV_A_ (W)w); |
|
|
1650 | } |
|
|
1651 | |
|
|
1652 | #if EV_STAT_ENABLE |
|
|
1653 | |
|
|
1654 | # ifdef _WIN32 |
|
|
1655 | # undef lstat |
|
|
1656 | # define lstat(a,b) _stati64 (a,b) |
|
|
1657 | # endif |
|
|
1658 | |
|
|
1659 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
1660 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
1661 | |
|
|
1662 | void |
|
|
1663 | ev_stat_stat (EV_P_ ev_stat *w) |
|
|
1664 | { |
|
|
1665 | if (lstat (w->path, &w->attr) < 0) |
|
|
1666 | w->attr.st_nlink = 0; |
|
|
1667 | else if (!w->attr.st_nlink) |
|
|
1668 | w->attr.st_nlink = 1; |
|
|
1669 | } |
|
|
1670 | |
337 | static void |
1671 | static void |
338 | ev_start (struct ev_watcher *w, int active) |
1672 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
339 | { |
1673 | { |
340 | w->pending = 0; |
1674 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
341 | w->active = active; |
1675 | |
|
|
1676 | /* we copy this here each the time so that */ |
|
|
1677 | /* prev has the old value when the callback gets invoked */ |
|
|
1678 | w->prev = w->attr; |
|
|
1679 | ev_stat_stat (EV_A_ w); |
|
|
1680 | |
|
|
1681 | if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata))) |
|
|
1682 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
1683 | } |
|
|
1684 | |
|
|
1685 | void |
|
|
1686 | ev_stat_start (EV_P_ ev_stat *w) |
|
|
1687 | { |
|
|
1688 | if (expect_false (ev_is_active (w))) |
|
|
1689 | return; |
|
|
1690 | |
|
|
1691 | /* since we use memcmp, we need to clear any padding data etc. */ |
|
|
1692 | memset (&w->prev, 0, sizeof (ev_statdata)); |
|
|
1693 | memset (&w->attr, 0, sizeof (ev_statdata)); |
|
|
1694 | |
|
|
1695 | ev_stat_stat (EV_A_ w); |
|
|
1696 | |
|
|
1697 | if (w->interval < MIN_STAT_INTERVAL) |
|
|
1698 | w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
1699 | |
|
|
1700 | ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); |
|
|
1701 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
1702 | ev_timer_start (EV_A_ &w->timer); |
|
|
1703 | |
|
|
1704 | ev_start (EV_A_ (W)w, 1); |
|
|
1705 | } |
|
|
1706 | |
|
|
1707 | void |
|
|
1708 | ev_stat_stop (EV_P_ ev_stat *w) |
|
|
1709 | { |
|
|
1710 | ev_clear_pending (EV_A_ (W)w); |
|
|
1711 | if (expect_false (!ev_is_active (w))) |
|
|
1712 | return; |
|
|
1713 | |
|
|
1714 | ev_timer_stop (EV_A_ &w->timer); |
|
|
1715 | |
|
|
1716 | ev_stop (EV_A_ (W)w); |
|
|
1717 | } |
|
|
1718 | #endif |
|
|
1719 | |
|
|
1720 | void |
|
|
1721 | ev_idle_start (EV_P_ ev_idle *w) |
|
|
1722 | { |
|
|
1723 | if (expect_false (ev_is_active (w))) |
|
|
1724 | return; |
|
|
1725 | |
|
|
1726 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1727 | array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2); |
|
|
1728 | idles [idlecnt - 1] = w; |
|
|
1729 | } |
|
|
1730 | |
|
|
1731 | void |
|
|
1732 | ev_idle_stop (EV_P_ ev_idle *w) |
|
|
1733 | { |
|
|
1734 | ev_clear_pending (EV_A_ (W)w); |
|
|
1735 | if (expect_false (!ev_is_active (w))) |
|
|
1736 | return; |
|
|
1737 | |
|
|
1738 | { |
|
|
1739 | int active = ((W)w)->active; |
|
|
1740 | idles [active - 1] = idles [--idlecnt]; |
|
|
1741 | ((W)idles [active - 1])->active = active; |
|
|
1742 | } |
|
|
1743 | |
|
|
1744 | ev_stop (EV_A_ (W)w); |
|
|
1745 | } |
|
|
1746 | |
|
|
1747 | void |
|
|
1748 | ev_prepare_start (EV_P_ ev_prepare *w) |
|
|
1749 | { |
|
|
1750 | if (expect_false (ev_is_active (w))) |
|
|
1751 | return; |
|
|
1752 | |
|
|
1753 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1754 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
|
|
1755 | prepares [preparecnt - 1] = w; |
|
|
1756 | } |
|
|
1757 | |
|
|
1758 | void |
|
|
1759 | ev_prepare_stop (EV_P_ ev_prepare *w) |
|
|
1760 | { |
|
|
1761 | ev_clear_pending (EV_A_ (W)w); |
|
|
1762 | if (expect_false (!ev_is_active (w))) |
|
|
1763 | return; |
|
|
1764 | |
|
|
1765 | { |
|
|
1766 | int active = ((W)w)->active; |
|
|
1767 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
1768 | ((W)prepares [active - 1])->active = active; |
|
|
1769 | } |
|
|
1770 | |
|
|
1771 | ev_stop (EV_A_ (W)w); |
|
|
1772 | } |
|
|
1773 | |
|
|
1774 | void |
|
|
1775 | ev_check_start (EV_P_ ev_check *w) |
|
|
1776 | { |
|
|
1777 | if (expect_false (ev_is_active (w))) |
|
|
1778 | return; |
|
|
1779 | |
|
|
1780 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1781 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
1782 | checks [checkcnt - 1] = w; |
|
|
1783 | } |
|
|
1784 | |
|
|
1785 | void |
|
|
1786 | ev_check_stop (EV_P_ ev_check *w) |
|
|
1787 | { |
|
|
1788 | ev_clear_pending (EV_A_ (W)w); |
|
|
1789 | if (expect_false (!ev_is_active (w))) |
|
|
1790 | return; |
|
|
1791 | |
|
|
1792 | { |
|
|
1793 | int active = ((W)w)->active; |
|
|
1794 | checks [active - 1] = checks [--checkcnt]; |
|
|
1795 | ((W)checks [active - 1])->active = active; |
|
|
1796 | } |
|
|
1797 | |
|
|
1798 | ev_stop (EV_A_ (W)w); |
|
|
1799 | } |
|
|
1800 | |
|
|
1801 | #if EV_EMBED_ENABLE |
|
|
1802 | void noinline |
|
|
1803 | ev_embed_sweep (EV_P_ ev_embed *w) |
|
|
1804 | { |
|
|
1805 | ev_loop (w->loop, EVLOOP_NONBLOCK); |
342 | } |
1806 | } |
343 | |
1807 | |
344 | static void |
1808 | static void |
345 | ev_stop (struct ev_watcher *w) |
1809 | embed_cb (EV_P_ ev_io *io, int revents) |
346 | { |
1810 | { |
347 | if (w->pending) |
1811 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
348 | pendings [w->pending - 1].w = 0; |
|
|
349 | |
1812 | |
350 | w->active = 0; |
|
|
351 | /* nop */ |
|
|
352 | } |
|
|
353 | |
|
|
354 | void |
|
|
355 | evio_start (struct ev_io *w) |
|
|
356 | { |
|
|
357 | if (ev_is_active (w)) |
1813 | if (ev_cb (w)) |
358 | return; |
1814 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
359 | |
|
|
360 | int fd = w->fd; |
|
|
361 | |
|
|
362 | ev_start ((struct ev_watcher *)w, 1); |
|
|
363 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
|
|
364 | wlist_add ((struct ev_watcher_list **)&anfds[fd].head, (struct ev_watcher_list *)w); |
|
|
365 | |
|
|
366 | ++fdchangecnt; |
|
|
367 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
368 | fdchanges [fdchangecnt - 1] = fd; |
|
|
369 | } |
|
|
370 | |
|
|
371 | void |
|
|
372 | evio_stop (struct ev_io *w) |
|
|
373 | { |
|
|
374 | if (!ev_is_active (w)) |
|
|
375 | return; |
|
|
376 | |
|
|
377 | wlist_del ((struct ev_watcher_list **)&anfds[w->fd].head, (struct ev_watcher_list *)w); |
|
|
378 | ev_stop ((struct ev_watcher *)w); |
|
|
379 | |
|
|
380 | ++fdchangecnt; |
|
|
381 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
382 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
383 | } |
|
|
384 | |
|
|
385 | void |
|
|
386 | evtimer_start (struct ev_timer *w) |
|
|
387 | { |
|
|
388 | if (ev_is_active (w)) |
|
|
389 | return; |
|
|
390 | |
|
|
391 | if (w->is_abs) |
|
|
392 | { |
|
|
393 | /* this formula differs from the one in timer_reify becuse we do not round up */ |
|
|
394 | if (w->repeat) |
|
|
395 | w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat; |
|
|
396 | } |
|
|
397 | else |
1815 | else |
398 | w->at += ev_now; |
1816 | ev_embed_sweep (loop, w); |
399 | |
|
|
400 | ev_start ((struct ev_watcher *)w, ++timercnt); |
|
|
401 | array_needsize (timers, timermax, timercnt, ); |
|
|
402 | timers [timercnt - 1] = w; |
|
|
403 | upheap (timercnt - 1); |
|
|
404 | } |
1817 | } |
405 | |
1818 | |
406 | void |
1819 | void |
407 | evtimer_stop (struct ev_timer *w) |
1820 | ev_embed_start (EV_P_ ev_embed *w) |
408 | { |
1821 | { |
|
|
1822 | if (expect_false (ev_is_active (w))) |
|
|
1823 | return; |
|
|
1824 | |
|
|
1825 | { |
|
|
1826 | struct ev_loop *loop = w->loop; |
|
|
1827 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
1828 | ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); |
|
|
1829 | } |
|
|
1830 | |
|
|
1831 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
1832 | ev_io_start (EV_A_ &w->io); |
|
|
1833 | |
|
|
1834 | ev_start (EV_A_ (W)w, 1); |
|
|
1835 | } |
|
|
1836 | |
|
|
1837 | void |
|
|
1838 | ev_embed_stop (EV_P_ ev_embed *w) |
|
|
1839 | { |
|
|
1840 | ev_clear_pending (EV_A_ (W)w); |
409 | if (!ev_is_active (w)) |
1841 | if (expect_false (!ev_is_active (w))) |
410 | return; |
1842 | return; |
411 | |
1843 | |
412 | if (w->active < timercnt--) |
1844 | ev_io_stop (EV_A_ &w->io); |
413 | { |
|
|
414 | timers [w->active - 1] = timers [timercnt]; |
|
|
415 | downheap (w->active - 1); |
|
|
416 | } |
|
|
417 | |
1845 | |
418 | ev_stop ((struct ev_watcher *)w); |
1846 | ev_stop (EV_A_ (W)w); |
419 | } |
1847 | } |
|
|
1848 | #endif |
420 | |
1849 | |
|
|
1850 | #if EV_FORK_ENABLE |
421 | void |
1851 | void |
422 | evsignal_start (struct ev_signal *w) |
1852 | ev_fork_start (EV_P_ ev_fork *w) |
423 | { |
1853 | { |
424 | if (ev_is_active (w)) |
1854 | if (expect_false (ev_is_active (w))) |
425 | return; |
1855 | return; |
426 | |
1856 | |
427 | ev_start ((struct ev_watcher *)w, 1); |
1857 | ev_start (EV_A_ (W)w, ++forkcnt); |
428 | array_needsize (signals, signalmax, w->signum, signals_init); |
1858 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
429 | wlist_add ((struct ev_watcher_list **)&signals [w->signum - 1], (struct ev_watcher_list *)w); |
1859 | forks [forkcnt - 1] = w; |
430 | } |
1860 | } |
431 | |
1861 | |
432 | void |
1862 | void |
433 | evsignal_stop (struct ev_signal *w) |
1863 | ev_fork_stop (EV_P_ ev_fork *w) |
434 | { |
1864 | { |
|
|
1865 | ev_clear_pending (EV_A_ (W)w); |
435 | if (!ev_is_active (w)) |
1866 | if (expect_false (!ev_is_active (w))) |
436 | return; |
1867 | return; |
437 | |
1868 | |
438 | wlist_del ((struct ev_watcher_list **)&signals [w->signum - 1], (struct ev_watcher_list *)w); |
1869 | { |
439 | ev_stop ((struct ev_watcher *)w); |
1870 | int active = ((W)w)->active; |
|
|
1871 | forks [active - 1] = forks [--forkcnt]; |
|
|
1872 | ((W)forks [active - 1])->active = active; |
|
|
1873 | } |
|
|
1874 | |
|
|
1875 | ev_stop (EV_A_ (W)w); |
440 | } |
1876 | } |
|
|
1877 | #endif |
441 | |
1878 | |
442 | /*****************************************************************************/ |
1879 | /*****************************************************************************/ |
443 | #if 1 |
1880 | |
|
|
1881 | struct ev_once |
|
|
1882 | { |
|
|
1883 | ev_io io; |
|
|
1884 | ev_timer to; |
|
|
1885 | void (*cb)(int revents, void *arg); |
|
|
1886 | void *arg; |
|
|
1887 | }; |
444 | |
1888 | |
445 | static void |
1889 | static void |
446 | sin_cb (struct ev_io *w, int revents) |
1890 | once_cb (EV_P_ struct ev_once *once, int revents) |
447 | { |
1891 | { |
448 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
1892 | void (*cb)(int revents, void *arg) = once->cb; |
|
|
1893 | void *arg = once->arg; |
|
|
1894 | |
|
|
1895 | ev_io_stop (EV_A_ &once->io); |
|
|
1896 | ev_timer_stop (EV_A_ &once->to); |
|
|
1897 | ev_free (once); |
|
|
1898 | |
|
|
1899 | cb (revents, arg); |
449 | } |
1900 | } |
450 | |
1901 | |
451 | static void |
1902 | static void |
|
|
1903 | once_cb_io (EV_P_ ev_io *w, int revents) |
|
|
1904 | { |
|
|
1905 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
|
|
1906 | } |
|
|
1907 | |
|
|
1908 | static void |
452 | ocb (struct ev_timer *w, int revents) |
1909 | once_cb_to (EV_P_ ev_timer *w, int revents) |
453 | { |
1910 | { |
454 | fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
1911 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
455 | } |
1912 | } |
456 | |
1913 | |
457 | int main (void) |
1914 | void |
|
|
1915 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
458 | { |
1916 | { |
459 | struct ev_io sin; |
1917 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
460 | |
1918 | |
461 | ev_init (0); |
1919 | if (expect_false (!once)) |
462 | |
|
|
463 | evw_init (&sin, sin_cb, 55); |
|
|
464 | evio_set (&sin, 0, EV_READ); |
|
|
465 | evio_start (&sin); |
|
|
466 | |
|
|
467 | struct ev_timer t[1000]; |
|
|
468 | |
|
|
469 | int i; |
|
|
470 | for (i = 0; i < 1000; ++i) |
|
|
471 | { |
|
|
472 | struct ev_timer *w = t + i; |
|
|
473 | evw_init (w, ocb, i); |
|
|
474 | evtimer_set_rel (w, drand48 (), 0); |
|
|
475 | evtimer_start (w); |
|
|
476 | if (drand48 () < 0.5) |
|
|
477 | evtimer_stop (w); |
|
|
478 | } |
1920 | { |
479 | |
1921 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
480 | ev_loop (0); |
|
|
481 | |
|
|
482 | return 0; |
1922 | return; |
483 | } |
1923 | } |
484 | |
1924 | |
485 | #endif |
1925 | once->cb = cb; |
|
|
1926 | once->arg = arg; |
486 | |
1927 | |
|
|
1928 | ev_init (&once->io, once_cb_io); |
|
|
1929 | if (fd >= 0) |
|
|
1930 | { |
|
|
1931 | ev_io_set (&once->io, fd, events); |
|
|
1932 | ev_io_start (EV_A_ &once->io); |
|
|
1933 | } |
487 | |
1934 | |
|
|
1935 | ev_init (&once->to, once_cb_to); |
|
|
1936 | if (timeout >= 0.) |
|
|
1937 | { |
|
|
1938 | ev_timer_set (&once->to, timeout, 0.); |
|
|
1939 | ev_timer_start (EV_A_ &once->to); |
|
|
1940 | } |
|
|
1941 | } |
488 | |
1942 | |
|
|
1943 | #ifdef __cplusplus |
|
|
1944 | } |
|
|
1945 | #endif |
489 | |
1946 | |