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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 | # endif |
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47 | |
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48 | # if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT) |
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49 | # define EV_USE_SELECT 1 |
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50 | # endif |
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51 | |
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52 | # if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL) |
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53 | # define EV_USE_POLL 1 |
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54 | # endif |
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55 | |
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56 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL) |
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57 | # define EV_USE_EPOLL 1 |
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58 | # endif |
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59 | |
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60 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE) |
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61 | # define EV_USE_KQUEUE 1 |
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62 | # endif |
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63 | |
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64 | # if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT) |
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65 | # define EV_USE_PORT 1 |
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66 | # endif |
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67 | |
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68 | #endif |
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69 | |
1 | #include <math.h> |
70 | #include <math.h> |
2 | #include <stdlib.h> |
71 | #include <stdlib.h> |
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72 | #include <fcntl.h> |
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73 | #include <stddef.h> |
3 | |
74 | |
4 | #include <stdio.h> |
75 | #include <stdio.h> |
5 | |
76 | |
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77 | #include <assert.h> |
6 | #include <errno.h> |
78 | #include <errno.h> |
7 | #include <sys/time.h> |
79 | #include <sys/types.h> |
8 | #include <time.h> |
80 | #include <time.h> |
9 | |
81 | |
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82 | #include <signal.h> |
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83 | |
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84 | #ifndef _WIN32 |
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85 | # include <unistd.h> |
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86 | # include <sys/time.h> |
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87 | # include <sys/wait.h> |
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88 | #else |
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89 | # define WIN32_LEAN_AND_MEAN |
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90 | # include <windows.h> |
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91 | # ifndef EV_SELECT_IS_WINSOCKET |
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92 | # define EV_SELECT_IS_WINSOCKET 1 |
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93 | # endif |
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94 | #endif |
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95 | |
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96 | /**/ |
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97 | |
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98 | #ifndef EV_USE_MONOTONIC |
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99 | # define EV_USE_MONOTONIC 0 |
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100 | #endif |
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101 | |
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102 | #ifndef EV_USE_REALTIME |
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103 | # define EV_USE_REALTIME 0 |
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104 | #endif |
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105 | |
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106 | #ifndef EV_USE_SELECT |
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107 | # define EV_USE_SELECT 1 |
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108 | #endif |
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109 | |
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110 | #ifndef EV_USE_POLL |
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111 | # ifdef _WIN32 |
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112 | # define EV_USE_POLL 0 |
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113 | # else |
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114 | # define EV_USE_POLL 1 |
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115 | # endif |
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116 | #endif |
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117 | |
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118 | #ifndef EV_USE_EPOLL |
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119 | # define EV_USE_EPOLL 0 |
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120 | #endif |
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121 | |
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122 | #ifndef EV_USE_KQUEUE |
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123 | # define EV_USE_KQUEUE 0 |
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124 | #endif |
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125 | |
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126 | #ifndef EV_USE_PORT |
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127 | # define EV_USE_PORT 0 |
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128 | #endif |
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129 | |
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130 | /**/ |
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131 | |
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132 | /* darwin simply cannot be helped */ |
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133 | #ifdef __APPLE__ |
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134 | # undef EV_USE_POLL |
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135 | # undef EV_USE_KQUEUE |
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136 | #endif |
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137 | |
10 | #ifdef CLOCK_MONOTONIC |
138 | #ifndef CLOCK_MONOTONIC |
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139 | # undef EV_USE_MONOTONIC |
11 | # define HAVE_MONOTONIC 1 |
140 | # define EV_USE_MONOTONIC 0 |
12 | #endif |
141 | #endif |
13 | |
142 | |
14 | #define HAVE_EPOLL 1 |
143 | #ifndef CLOCK_REALTIME |
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144 | # undef EV_USE_REALTIME |
15 | #define HAVE_REALTIME 1 |
145 | # define EV_USE_REALTIME 0 |
16 | #define HAVE_SELECT 0 |
146 | #endif |
17 | |
147 | |
18 | #define MAX_BLOCKTIME 60. |
148 | #if EV_SELECT_IS_WINSOCKET |
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149 | # include <winsock.h> |
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150 | #endif |
19 | |
151 | |
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152 | /**/ |
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153 | |
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154 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
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155 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
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156 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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157 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ |
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158 | |
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159 | #ifdef EV_H |
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160 | # include EV_H |
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161 | #else |
20 | #include "ev.h" |
162 | # include "ev.h" |
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163 | #endif |
21 | |
164 | |
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165 | #if __GNUC__ >= 3 |
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166 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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167 | # define inline inline |
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168 | #else |
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169 | # define expect(expr,value) (expr) |
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170 | # define inline static |
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171 | #endif |
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172 | |
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173 | #define expect_false(expr) expect ((expr) != 0, 0) |
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174 | #define expect_true(expr) expect ((expr) != 0, 1) |
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175 | |
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176 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
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177 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
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178 | |
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179 | #define EMPTY0 /* required for microsofts broken pseudo-c compiler */ |
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180 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
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181 | |
22 | struct ev_watcher { |
182 | 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 { |
183 | typedef struct ev_watcher_list *WL; |
27 | EV_WATCHER_LIST (ev_watcher_list); |
184 | typedef struct ev_watcher_time *WT; |
28 | }; |
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29 | |
185 | |
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186 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
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187 | |
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188 | #ifdef _WIN32 |
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189 | # include "ev_win32.c" |
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190 | #endif |
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191 | |
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192 | /*****************************************************************************/ |
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193 | |
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194 | static void (*syserr_cb)(const char *msg); |
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195 | |
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196 | void ev_set_syserr_cb (void (*cb)(const char *msg)) |
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197 | { |
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198 | syserr_cb = cb; |
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199 | } |
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200 | |
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201 | static void |
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202 | syserr (const char *msg) |
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203 | { |
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204 | if (!msg) |
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205 | msg = "(libev) system error"; |
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206 | |
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207 | if (syserr_cb) |
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208 | syserr_cb (msg); |
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209 | else |
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210 | { |
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211 | perror (msg); |
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212 | abort (); |
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213 | } |
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214 | } |
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215 | |
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216 | static void *(*alloc)(void *ptr, long size); |
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217 | |
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218 | void ev_set_allocator (void *(*cb)(void *ptr, long size)) |
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219 | { |
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220 | alloc = cb; |
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221 | } |
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222 | |
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223 | static void * |
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224 | ev_realloc (void *ptr, long size) |
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225 | { |
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226 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
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227 | |
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228 | if (!ptr && size) |
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229 | { |
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230 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
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231 | abort (); |
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232 | } |
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233 | |
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234 | return ptr; |
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235 | } |
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236 | |
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237 | #define ev_malloc(size) ev_realloc (0, (size)) |
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238 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
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239 | |
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240 | /*****************************************************************************/ |
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241 | |
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242 | typedef struct |
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243 | { |
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244 | WL head; |
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245 | unsigned char events; |
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246 | unsigned char reify; |
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247 | #if EV_SELECT_IS_WINSOCKET |
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248 | SOCKET handle; |
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249 | #endif |
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250 | } ANFD; |
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251 | |
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252 | typedef struct |
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253 | { |
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254 | W w; |
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255 | int events; |
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256 | } ANPENDING; |
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257 | |
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258 | #if EV_MULTIPLICITY |
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259 | |
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260 | struct ev_loop |
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261 | { |
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262 | ev_tstamp ev_rt_now; |
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263 | #define ev_rt_now ((loop)->ev_rt_now) |
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264 | #define VAR(name,decl) decl; |
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265 | #include "ev_vars.h" |
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266 | #undef VAR |
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267 | }; |
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268 | #include "ev_wrap.h" |
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269 | |
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270 | static struct ev_loop default_loop_struct; |
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271 | struct ev_loop *ev_default_loop_ptr; |
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272 | |
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273 | #else |
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274 | |
30 | ev_tstamp ev_now; |
275 | ev_tstamp ev_rt_now; |
31 | int ev_method; |
276 | #define VAR(name,decl) static decl; |
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277 | #include "ev_vars.h" |
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278 | #undef VAR |
32 | |
279 | |
33 | static int have_monotonic; /* runtime */ |
280 | static int ev_default_loop_ptr; |
34 | |
281 | |
35 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
282 | #endif |
36 | static void (*method_reify)(void); |
283 | |
37 | static void (*method_poll)(ev_tstamp timeout); |
284 | /*****************************************************************************/ |
38 | |
285 | |
39 | ev_tstamp |
286 | ev_tstamp |
40 | ev_time (void) |
287 | ev_time (void) |
41 | { |
288 | { |
42 | #if HAVE_REALTIME |
289 | #if EV_USE_REALTIME |
43 | struct timespec ts; |
290 | struct timespec ts; |
44 | clock_gettime (CLOCK_REALTIME, &ts); |
291 | clock_gettime (CLOCK_REALTIME, &ts); |
45 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
292 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
46 | #else |
293 | #else |
47 | struct timeval tv; |
294 | struct timeval tv; |
48 | gettimeofday (&tv, 0); |
295 | gettimeofday (&tv, 0); |
49 | return tv.tv_sec + tv.tv_usec * 1e-6; |
296 | return tv.tv_sec + tv.tv_usec * 1e-6; |
50 | #endif |
297 | #endif |
51 | } |
298 | } |
52 | |
299 | |
53 | static ev_tstamp |
300 | inline ev_tstamp |
54 | get_clock (void) |
301 | get_clock (void) |
55 | { |
302 | { |
56 | #if HAVE_MONOTONIC |
303 | #if EV_USE_MONOTONIC |
57 | if (have_monotonic) |
304 | if (expect_true (have_monotonic)) |
58 | { |
305 | { |
59 | struct timespec ts; |
306 | struct timespec ts; |
60 | clock_gettime (CLOCK_MONOTONIC, &ts); |
307 | clock_gettime (CLOCK_MONOTONIC, &ts); |
61 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
308 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
62 | } |
309 | } |
63 | #endif |
310 | #endif |
64 | |
311 | |
65 | return ev_time (); |
312 | return ev_time (); |
66 | } |
313 | } |
67 | |
314 | |
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315 | #if EV_MULTIPLICITY |
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316 | ev_tstamp |
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317 | ev_now (EV_P) |
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318 | { |
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319 | return ev_rt_now; |
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320 | } |
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321 | #endif |
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322 | |
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323 | #define array_roundsize(type,n) (((n) | 4) & ~3) |
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324 | |
68 | #define array_needsize(base,cur,cnt,init) \ |
325 | #define array_needsize(type,base,cur,cnt,init) \ |
69 | if ((cnt) > cur) \ |
326 | if (expect_false ((cnt) > cur)) \ |
70 | { \ |
327 | { \ |
71 | int newcnt = cur ? cur << 1 : 16; \ |
328 | int newcnt = cur; \ |
72 | fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\ |
329 | do \ |
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330 | { \ |
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331 | newcnt = array_roundsize (type, newcnt << 1); \ |
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332 | } \ |
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333 | while ((cnt) > newcnt); \ |
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334 | \ |
73 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
335 | base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\ |
74 | init (base + cur, newcnt - cur); \ |
336 | init (base + cur, newcnt - cur); \ |
75 | cur = newcnt; \ |
337 | cur = newcnt; \ |
76 | } |
338 | } |
77 | |
339 | |
78 | typedef struct |
340 | #define array_slim(type,stem) \ |
79 | { |
341 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
80 | struct ev_io *head; |
342 | { \ |
81 | unsigned char wev, rev; /* want, received event set */ |
343 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
82 | } ANFD; |
344 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
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345 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
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346 | } |
83 | |
347 | |
84 | static ANFD *anfds; |
348 | #define array_free(stem, idx) \ |
85 | static int anfdmax; |
349 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
86 | |
350 | |
87 | static int *fdchanges; |
351 | /*****************************************************************************/ |
88 | static int fdchangemax, fdchangecnt; |
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89 | |
352 | |
90 | static void |
353 | static void |
91 | anfds_init (ANFD *base, int count) |
354 | anfds_init (ANFD *base, int count) |
92 | { |
355 | { |
93 | while (count--) |
356 | while (count--) |
94 | { |
357 | { |
95 | base->head = 0; |
358 | base->head = 0; |
96 | base->wev = base->rev = EV_NONE; |
359 | base->events = EV_NONE; |
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360 | base->reify = 0; |
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361 | |
97 | ++base; |
362 | ++base; |
98 | } |
363 | } |
99 | } |
364 | } |
100 | |
365 | |
101 | typedef struct |
366 | void |
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367 | ev_feed_event (EV_P_ void *w, int revents) |
102 | { |
368 | { |
103 | struct ev_watcher *w; |
369 | W w_ = (W)w; |
104 | int events; |
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105 | } ANPENDING; |
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106 | |
370 | |
107 | static ANPENDING *pendings; |
371 | if (w_->pending) |
108 | static int pendingmax, pendingcnt; |
372 | { |
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373 | pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; |
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374 | return; |
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375 | } |
109 | |
376 | |
110 | static void |
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111 | event (struct ev_watcher *w, int events) |
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112 | { |
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113 | w->pending = ++pendingcnt; |
377 | w_->pending = ++pendingcnt [ABSPRI (w_)]; |
114 | array_needsize (pendings, pendingmax, pendingcnt, ); |
378 | array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2); |
115 | pendings [pendingcnt - 1].w = w; |
379 | pendings [ABSPRI (w_)][w_->pending - 1].w = w_; |
116 | pendings [pendingcnt - 1].events = events; |
380 | pendings [ABSPRI (w_)][w_->pending - 1].events = revents; |
117 | } |
381 | } |
118 | |
382 | |
119 | static void |
383 | static void |
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384 | queue_events (EV_P_ W *events, int eventcnt, int type) |
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385 | { |
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386 | int i; |
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387 | |
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388 | for (i = 0; i < eventcnt; ++i) |
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389 | ev_feed_event (EV_A_ events [i], type); |
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390 | } |
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391 | |
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392 | inline void |
120 | fd_event (int fd, int events) |
393 | fd_event (EV_P_ int fd, int revents) |
121 | { |
394 | { |
122 | ANFD *anfd = anfds + fd; |
395 | ANFD *anfd = anfds + fd; |
123 | struct ev_io *w; |
396 | struct ev_io *w; |
124 | |
397 | |
125 | for (w = anfd->head; w; w = w->next) |
398 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
126 | { |
399 | { |
127 | int ev = w->events & events; |
400 | int ev = w->events & revents; |
128 | |
401 | |
129 | if (ev) |
402 | if (ev) |
130 | event ((struct ev_watcher *)w, ev); |
403 | ev_feed_event (EV_A_ (W)w, ev); |
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404 | } |
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405 | } |
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406 | |
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407 | void |
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408 | ev_feed_fd_event (EV_P_ int fd, int revents) |
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409 | { |
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410 | fd_event (EV_A_ fd, revents); |
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411 | } |
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412 | |
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413 | /*****************************************************************************/ |
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414 | |
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415 | static void |
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416 | fd_reify (EV_P) |
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417 | { |
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418 | int i; |
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419 | |
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420 | for (i = 0; i < fdchangecnt; ++i) |
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421 | { |
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422 | int fd = fdchanges [i]; |
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423 | ANFD *anfd = anfds + fd; |
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424 | struct ev_io *w; |
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425 | |
|
|
426 | int events = 0; |
|
|
427 | |
|
|
428 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
|
|
429 | events |= w->events; |
|
|
430 | |
|
|
431 | #if EV_SELECT_IS_WINSOCKET |
|
|
432 | if (events) |
|
|
433 | { |
|
|
434 | unsigned long argp; |
|
|
435 | anfd->handle = _get_osfhandle (fd); |
|
|
436 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
|
|
437 | } |
|
|
438 | #endif |
|
|
439 | |
|
|
440 | anfd->reify = 0; |
|
|
441 | |
|
|
442 | method_modify (EV_A_ fd, anfd->events, events); |
|
|
443 | anfd->events = events; |
|
|
444 | } |
|
|
445 | |
|
|
446 | fdchangecnt = 0; |
|
|
447 | } |
|
|
448 | |
|
|
449 | static void |
|
|
450 | fd_change (EV_P_ int fd) |
|
|
451 | { |
|
|
452 | if (anfds [fd].reify) |
|
|
453 | return; |
|
|
454 | |
|
|
455 | anfds [fd].reify = 1; |
|
|
456 | |
|
|
457 | ++fdchangecnt; |
|
|
458 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
|
|
459 | fdchanges [fdchangecnt - 1] = fd; |
|
|
460 | } |
|
|
461 | |
|
|
462 | static void |
|
|
463 | fd_kill (EV_P_ int fd) |
|
|
464 | { |
|
|
465 | struct ev_io *w; |
|
|
466 | |
|
|
467 | while ((w = (struct ev_io *)anfds [fd].head)) |
|
|
468 | { |
|
|
469 | ev_io_stop (EV_A_ w); |
|
|
470 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
471 | } |
|
|
472 | } |
|
|
473 | |
|
|
474 | static int |
|
|
475 | fd_valid (int fd) |
|
|
476 | { |
|
|
477 | #ifdef _WIN32 |
|
|
478 | return _get_osfhandle (fd) != -1; |
|
|
479 | #else |
|
|
480 | return fcntl (fd, F_GETFD) != -1; |
|
|
481 | #endif |
|
|
482 | } |
|
|
483 | |
|
|
484 | /* called on EBADF to verify fds */ |
|
|
485 | static void |
|
|
486 | fd_ebadf (EV_P) |
|
|
487 | { |
|
|
488 | int fd; |
|
|
489 | |
|
|
490 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
491 | if (anfds [fd].events) |
|
|
492 | if (!fd_valid (fd) == -1 && errno == EBADF) |
|
|
493 | fd_kill (EV_A_ fd); |
|
|
494 | } |
|
|
495 | |
|
|
496 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
497 | static void |
|
|
498 | fd_enomem (EV_P) |
|
|
499 | { |
|
|
500 | int fd; |
|
|
501 | |
|
|
502 | for (fd = anfdmax; fd--; ) |
|
|
503 | if (anfds [fd].events) |
|
|
504 | { |
|
|
505 | fd_kill (EV_A_ fd); |
|
|
506 | return; |
131 | } |
507 | } |
132 | } |
508 | } |
133 | |
509 | |
134 | static struct ev_timer **timers; |
510 | /* usually called after fork if method needs to re-arm all fds from scratch */ |
135 | static int timermax, timercnt; |
|
|
136 | |
|
|
137 | static void |
511 | static void |
138 | upheap (int k) |
512 | fd_rearm_all (EV_P) |
139 | { |
513 | { |
140 | struct ev_timer *w = timers [k]; |
514 | int fd; |
141 | |
515 | |
|
|
516 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
517 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
518 | if (anfds [fd].events) |
|
|
519 | { |
|
|
520 | anfds [fd].events = 0; |
|
|
521 | fd_change (EV_A_ fd); |
|
|
522 | } |
|
|
523 | } |
|
|
524 | |
|
|
525 | /*****************************************************************************/ |
|
|
526 | |
|
|
527 | static void |
|
|
528 | upheap (WT *heap, int k) |
|
|
529 | { |
|
|
530 | WT w = heap [k]; |
|
|
531 | |
142 | while (k && timers [k >> 1]->at > w->at) |
532 | while (k && heap [k >> 1]->at > w->at) |
143 | { |
533 | { |
144 | timers [k] = timers [k >> 1]; |
534 | heap [k] = heap [k >> 1]; |
145 | timers [k]->active = k + 1; |
535 | ((W)heap [k])->active = k + 1; |
146 | k >>= 1; |
536 | k >>= 1; |
147 | } |
537 | } |
148 | |
538 | |
149 | timers [k] = w; |
539 | heap [k] = w; |
150 | timers [k]->active = k + 1; |
540 | ((W)heap [k])->active = k + 1; |
151 | |
541 | |
152 | } |
542 | } |
153 | |
543 | |
154 | static void |
544 | static void |
155 | downheap (int k) |
545 | downheap (WT *heap, int N, int k) |
156 | { |
546 | { |
157 | struct ev_timer *w = timers [k]; |
547 | WT w = heap [k]; |
158 | |
548 | |
159 | while (k < (timercnt >> 1)) |
549 | while (k < (N >> 1)) |
160 | { |
550 | { |
161 | int j = k << 1; |
551 | int j = k << 1; |
162 | |
552 | |
163 | if (j + 1 < timercnt && timers [j]->at > timers [j + 1]->at) |
553 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
164 | ++j; |
554 | ++j; |
165 | |
555 | |
166 | if (w->at <= timers [j]->at) |
556 | if (w->at <= heap [j]->at) |
167 | break; |
557 | break; |
168 | |
558 | |
169 | timers [k] = timers [j]; |
559 | heap [k] = heap [j]; |
170 | timers [k]->active = k + 1; |
560 | ((W)heap [k])->active = k + 1; |
171 | k = j; |
561 | k = j; |
172 | } |
562 | } |
173 | |
563 | |
174 | timers [k] = w; |
564 | heap [k] = w; |
175 | timers [k]->active = k + 1; |
565 | ((W)heap [k])->active = k + 1; |
176 | } |
566 | } |
177 | |
567 | |
178 | static struct ev_signal **signals; |
568 | inline void |
|
|
569 | adjustheap (WT *heap, int N, int k) |
|
|
570 | { |
|
|
571 | upheap (heap, k); |
|
|
572 | downheap (heap, N, k); |
|
|
573 | } |
|
|
574 | |
|
|
575 | /*****************************************************************************/ |
|
|
576 | |
|
|
577 | typedef struct |
|
|
578 | { |
|
|
579 | WL head; |
|
|
580 | sig_atomic_t volatile gotsig; |
|
|
581 | } ANSIG; |
|
|
582 | |
|
|
583 | static ANSIG *signals; |
179 | static int signalmax, signalcnt; |
584 | static int signalmax; |
180 | |
585 | |
|
|
586 | static int sigpipe [2]; |
|
|
587 | static sig_atomic_t volatile gotsig; |
|
|
588 | static struct ev_io sigev; |
|
|
589 | |
181 | static void |
590 | static void |
182 | signals_init (struct ev_signal **base, int count) |
591 | signals_init (ANSIG *base, int count) |
183 | { |
592 | { |
184 | while (count--) |
593 | while (count--) |
185 | *base++ = 0; |
594 | { |
186 | } |
595 | base->head = 0; |
|
|
596 | base->gotsig = 0; |
187 | |
597 | |
|
|
598 | ++base; |
|
|
599 | } |
|
|
600 | } |
|
|
601 | |
|
|
602 | static void |
|
|
603 | sighandler (int signum) |
|
|
604 | { |
|
|
605 | #if _WIN32 |
|
|
606 | signal (signum, sighandler); |
|
|
607 | #endif |
|
|
608 | |
|
|
609 | signals [signum - 1].gotsig = 1; |
|
|
610 | |
|
|
611 | if (!gotsig) |
|
|
612 | { |
|
|
613 | int old_errno = errno; |
|
|
614 | gotsig = 1; |
|
|
615 | write (sigpipe [1], &signum, 1); |
|
|
616 | errno = old_errno; |
|
|
617 | } |
|
|
618 | } |
|
|
619 | |
|
|
620 | void |
|
|
621 | ev_feed_signal_event (EV_P_ int signum) |
|
|
622 | { |
|
|
623 | WL w; |
|
|
624 | |
|
|
625 | #if EV_MULTIPLICITY |
|
|
626 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
627 | #endif |
|
|
628 | |
|
|
629 | --signum; |
|
|
630 | |
|
|
631 | if (signum < 0 || signum >= signalmax) |
|
|
632 | return; |
|
|
633 | |
|
|
634 | signals [signum].gotsig = 0; |
|
|
635 | |
|
|
636 | for (w = signals [signum].head; w; w = w->next) |
|
|
637 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
638 | } |
|
|
639 | |
|
|
640 | static void |
|
|
641 | sigcb (EV_P_ struct ev_io *iow, int revents) |
|
|
642 | { |
|
|
643 | int signum; |
|
|
644 | |
|
|
645 | read (sigpipe [0], &revents, 1); |
|
|
646 | gotsig = 0; |
|
|
647 | |
|
|
648 | for (signum = signalmax; signum--; ) |
|
|
649 | if (signals [signum].gotsig) |
|
|
650 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
651 | } |
|
|
652 | |
|
|
653 | inline void |
|
|
654 | fd_intern (int fd) |
|
|
655 | { |
|
|
656 | #ifdef _WIN32 |
|
|
657 | int arg = 1; |
|
|
658 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
659 | #else |
|
|
660 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
661 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
662 | #endif |
|
|
663 | } |
|
|
664 | |
|
|
665 | static void |
|
|
666 | siginit (EV_P) |
|
|
667 | { |
|
|
668 | fd_intern (sigpipe [0]); |
|
|
669 | fd_intern (sigpipe [1]); |
|
|
670 | |
|
|
671 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
672 | ev_io_start (EV_A_ &sigev); |
|
|
673 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
674 | } |
|
|
675 | |
|
|
676 | /*****************************************************************************/ |
|
|
677 | |
|
|
678 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
679 | |
|
|
680 | #ifndef _WIN32 |
|
|
681 | |
|
|
682 | static struct ev_signal childev; |
|
|
683 | |
|
|
684 | #ifndef WCONTINUED |
|
|
685 | # define WCONTINUED 0 |
|
|
686 | #endif |
|
|
687 | |
|
|
688 | static void |
|
|
689 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
|
|
690 | { |
|
|
691 | struct ev_child *w; |
|
|
692 | |
|
|
693 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
694 | if (w->pid == pid || !w->pid) |
|
|
695 | { |
|
|
696 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
|
|
697 | w->rpid = pid; |
|
|
698 | w->rstatus = status; |
|
|
699 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
700 | } |
|
|
701 | } |
|
|
702 | |
|
|
703 | static void |
|
|
704 | childcb (EV_P_ struct ev_signal *sw, int revents) |
|
|
705 | { |
|
|
706 | int pid, status; |
|
|
707 | |
|
|
708 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
|
|
709 | { |
|
|
710 | /* make sure we are called again until all childs have been reaped */ |
|
|
711 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
712 | |
|
|
713 | child_reap (EV_A_ sw, pid, pid, status); |
|
|
714 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
|
|
715 | } |
|
|
716 | } |
|
|
717 | |
|
|
718 | #endif |
|
|
719 | |
|
|
720 | /*****************************************************************************/ |
|
|
721 | |
|
|
722 | #if EV_USE_PORT |
|
|
723 | # include "ev_port.c" |
|
|
724 | #endif |
|
|
725 | #if EV_USE_KQUEUE |
|
|
726 | # include "ev_kqueue.c" |
|
|
727 | #endif |
188 | #if HAVE_EPOLL |
728 | #if EV_USE_EPOLL |
189 | # include "ev_epoll.c" |
729 | # include "ev_epoll.c" |
190 | #endif |
730 | #endif |
|
|
731 | #if EV_USE_POLL |
|
|
732 | # include "ev_poll.c" |
|
|
733 | #endif |
191 | #if HAVE_SELECT |
734 | #if EV_USE_SELECT |
192 | # include "ev_select.c" |
735 | # include "ev_select.c" |
193 | #endif |
736 | #endif |
194 | |
737 | |
195 | int ev_init (int flags) |
738 | int |
|
|
739 | ev_version_major (void) |
196 | { |
740 | { |
|
|
741 | return EV_VERSION_MAJOR; |
|
|
742 | } |
|
|
743 | |
|
|
744 | int |
|
|
745 | ev_version_minor (void) |
|
|
746 | { |
|
|
747 | return EV_VERSION_MINOR; |
|
|
748 | } |
|
|
749 | |
|
|
750 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
751 | static int |
|
|
752 | enable_secure (void) |
|
|
753 | { |
|
|
754 | #ifdef _WIN32 |
|
|
755 | return 0; |
|
|
756 | #else |
|
|
757 | return getuid () != geteuid () |
|
|
758 | || getgid () != getegid (); |
|
|
759 | #endif |
|
|
760 | } |
|
|
761 | |
|
|
762 | unsigned int |
|
|
763 | ev_method (EV_P) |
|
|
764 | { |
|
|
765 | return method; |
|
|
766 | } |
|
|
767 | |
|
|
768 | static void |
|
|
769 | loop_init (EV_P_ unsigned int flags) |
|
|
770 | { |
|
|
771 | if (!method) |
|
|
772 | { |
197 | #if HAVE_MONOTONIC |
773 | #if EV_USE_MONOTONIC |
198 | { |
774 | { |
199 | struct timespec ts; |
775 | struct timespec ts; |
200 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
776 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
201 | have_monotonic = 1; |
777 | have_monotonic = 1; |
202 | } |
778 | } |
203 | #endif |
779 | #endif |
204 | |
780 | |
205 | ev_now = ev_time (); |
781 | ev_rt_now = ev_time (); |
|
|
782 | mn_now = get_clock (); |
|
|
783 | now_floor = mn_now; |
|
|
784 | rtmn_diff = ev_rt_now - mn_now; |
206 | |
785 | |
|
|
786 | if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS")) |
|
|
787 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
788 | |
|
|
789 | if (!(flags & 0x0000ffff)) |
|
|
790 | flags |= 0x0000ffff; |
|
|
791 | |
|
|
792 | method = 0; |
|
|
793 | #if EV_USE_PORT |
|
|
794 | if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags); |
|
|
795 | #endif |
|
|
796 | #if EV_USE_KQUEUE |
|
|
797 | if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags); |
|
|
798 | #endif |
207 | #if HAVE_EPOLL |
799 | #if EV_USE_EPOLL |
208 | if (epoll_init (flags)) |
800 | if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags); |
209 | return ev_method; |
|
|
210 | #endif |
801 | #endif |
|
|
802 | #if EV_USE_POLL |
|
|
803 | if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags); |
|
|
804 | #endif |
211 | #if HAVE_SELECT |
805 | #if EV_USE_SELECT |
212 | if (select_init (flags)) |
806 | if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags); |
213 | return ev_method; |
|
|
214 | #endif |
807 | #endif |
215 | |
808 | |
216 | ev_method = EVMETHOD_NONE; |
809 | ev_init (&sigev, sigcb); |
217 | return ev_method; |
810 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
811 | } |
218 | } |
812 | } |
219 | |
813 | |
220 | void ev_prefork (void) |
814 | void |
221 | { |
815 | loop_destroy (EV_P) |
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 | { |
816 | { |
238 | int i; |
817 | int i; |
239 | |
818 | |
240 | for (i = 0; i < pendingcnt; ++i) |
819 | #if EV_USE_PORT |
|
|
820 | if (method == EVMETHOD_PORT ) port_destroy (EV_A); |
|
|
821 | #endif |
|
|
822 | #if EV_USE_KQUEUE |
|
|
823 | if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); |
|
|
824 | #endif |
|
|
825 | #if EV_USE_EPOLL |
|
|
826 | if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); |
|
|
827 | #endif |
|
|
828 | #if EV_USE_POLL |
|
|
829 | if (method == EVMETHOD_POLL ) poll_destroy (EV_A); |
|
|
830 | #endif |
|
|
831 | #if EV_USE_SELECT |
|
|
832 | if (method == EVMETHOD_SELECT) select_destroy (EV_A); |
|
|
833 | #endif |
|
|
834 | |
|
|
835 | for (i = NUMPRI; i--; ) |
|
|
836 | array_free (pending, [i]); |
|
|
837 | |
|
|
838 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
839 | array_free (fdchange, EMPTY0); |
|
|
840 | array_free (timer, EMPTY0); |
|
|
841 | #if EV_PERIODICS |
|
|
842 | array_free (periodic, EMPTY0); |
|
|
843 | #endif |
|
|
844 | array_free (idle, EMPTY0); |
|
|
845 | array_free (prepare, EMPTY0); |
|
|
846 | array_free (check, EMPTY0); |
|
|
847 | |
|
|
848 | method = 0; |
|
|
849 | } |
|
|
850 | |
|
|
851 | static void |
|
|
852 | loop_fork (EV_P) |
|
|
853 | { |
|
|
854 | #if EV_USE_PORT |
|
|
855 | if (method == EVMETHOD_PORT ) port_fork (EV_A); |
|
|
856 | #endif |
|
|
857 | #if EV_USE_KQUEUE |
|
|
858 | if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); |
|
|
859 | #endif |
|
|
860 | #if EV_USE_EPOLL |
|
|
861 | if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); |
|
|
862 | #endif |
|
|
863 | |
|
|
864 | if (ev_is_active (&sigev)) |
|
|
865 | { |
|
|
866 | /* default loop */ |
|
|
867 | |
|
|
868 | ev_ref (EV_A); |
|
|
869 | ev_io_stop (EV_A_ &sigev); |
|
|
870 | close (sigpipe [0]); |
|
|
871 | close (sigpipe [1]); |
|
|
872 | |
|
|
873 | while (pipe (sigpipe)) |
|
|
874 | syserr ("(libev) error creating pipe"); |
|
|
875 | |
|
|
876 | siginit (EV_A); |
241 | { |
877 | } |
242 | ANPENDING *p = pendings + i; |
|
|
243 | |
878 | |
244 | if (p->w) |
879 | postfork = 0; |
|
|
880 | } |
|
|
881 | |
|
|
882 | #if EV_MULTIPLICITY |
|
|
883 | struct ev_loop * |
|
|
884 | ev_loop_new (unsigned int flags) |
|
|
885 | { |
|
|
886 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
887 | |
|
|
888 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
889 | |
|
|
890 | loop_init (EV_A_ flags); |
|
|
891 | |
|
|
892 | if (ev_method (EV_A)) |
|
|
893 | return loop; |
|
|
894 | |
|
|
895 | return 0; |
|
|
896 | } |
|
|
897 | |
|
|
898 | void |
|
|
899 | ev_loop_destroy (EV_P) |
|
|
900 | { |
|
|
901 | loop_destroy (EV_A); |
|
|
902 | ev_free (loop); |
|
|
903 | } |
|
|
904 | |
|
|
905 | void |
|
|
906 | ev_loop_fork (EV_P) |
|
|
907 | { |
|
|
908 | postfork = 1; |
|
|
909 | } |
|
|
910 | |
|
|
911 | #endif |
|
|
912 | |
|
|
913 | #if EV_MULTIPLICITY |
|
|
914 | struct ev_loop * |
|
|
915 | ev_default_loop_ (unsigned int flags) |
|
|
916 | #else |
|
|
917 | int |
|
|
918 | ev_default_loop (unsigned int flags) |
|
|
919 | #endif |
|
|
920 | { |
|
|
921 | if (sigpipe [0] == sigpipe [1]) |
|
|
922 | if (pipe (sigpipe)) |
|
|
923 | return 0; |
|
|
924 | |
|
|
925 | if (!ev_default_loop_ptr) |
|
|
926 | { |
|
|
927 | #if EV_MULTIPLICITY |
|
|
928 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
|
|
929 | #else |
|
|
930 | ev_default_loop_ptr = 1; |
|
|
931 | #endif |
|
|
932 | |
|
|
933 | loop_init (EV_A_ flags); |
|
|
934 | |
|
|
935 | if (ev_method (EV_A)) |
245 | { |
936 | { |
246 | p->w->pending = 0; |
937 | siginit (EV_A); |
247 | p->w->cb (p->w, p->events); |
938 | |
|
|
939 | #ifndef _WIN32 |
|
|
940 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
941 | ev_set_priority (&childev, EV_MAXPRI); |
|
|
942 | ev_signal_start (EV_A_ &childev); |
|
|
943 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
944 | #endif |
248 | } |
945 | } |
|
|
946 | else |
|
|
947 | ev_default_loop_ptr = 0; |
|
|
948 | } |
|
|
949 | |
|
|
950 | return ev_default_loop_ptr; |
|
|
951 | } |
|
|
952 | |
|
|
953 | void |
|
|
954 | ev_default_destroy (void) |
|
|
955 | { |
|
|
956 | #if EV_MULTIPLICITY |
|
|
957 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
958 | #endif |
|
|
959 | |
|
|
960 | #ifndef _WIN32 |
|
|
961 | ev_ref (EV_A); /* child watcher */ |
|
|
962 | ev_signal_stop (EV_A_ &childev); |
|
|
963 | #endif |
|
|
964 | |
|
|
965 | ev_ref (EV_A); /* signal watcher */ |
|
|
966 | ev_io_stop (EV_A_ &sigev); |
|
|
967 | |
|
|
968 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
969 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
970 | |
|
|
971 | loop_destroy (EV_A); |
|
|
972 | } |
|
|
973 | |
|
|
974 | void |
|
|
975 | ev_default_fork (void) |
|
|
976 | { |
|
|
977 | #if EV_MULTIPLICITY |
|
|
978 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
979 | #endif |
|
|
980 | |
|
|
981 | if (method) |
|
|
982 | postfork = 1; |
|
|
983 | } |
|
|
984 | |
|
|
985 | /*****************************************************************************/ |
|
|
986 | |
|
|
987 | static int |
|
|
988 | any_pending (EV_P) |
|
|
989 | { |
|
|
990 | int pri; |
|
|
991 | |
|
|
992 | for (pri = NUMPRI; pri--; ) |
|
|
993 | if (pendingcnt [pri]) |
|
|
994 | return 1; |
|
|
995 | |
|
|
996 | return 0; |
|
|
997 | } |
|
|
998 | |
|
|
999 | static void |
|
|
1000 | call_pending (EV_P) |
|
|
1001 | { |
|
|
1002 | int pri; |
|
|
1003 | |
|
|
1004 | for (pri = NUMPRI; pri--; ) |
|
|
1005 | while (pendingcnt [pri]) |
|
|
1006 | { |
|
|
1007 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
|
|
1008 | |
|
|
1009 | if (p->w) |
|
|
1010 | { |
|
|
1011 | p->w->pending = 0; |
|
|
1012 | EV_CB_INVOKE (p->w, p->events); |
|
|
1013 | } |
249 | } |
1014 | } |
250 | |
|
|
251 | pendingcnt = 0; |
|
|
252 | } |
1015 | } |
253 | |
1016 | |
254 | static void |
1017 | static void |
255 | timer_reify (void) |
1018 | timers_reify (EV_P) |
256 | { |
1019 | { |
257 | while (timercnt && timers [0]->at <= ev_now) |
1020 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
258 | { |
1021 | { |
259 | struct ev_timer *w = timers [0]; |
1022 | struct ev_timer *w = timers [0]; |
260 | |
1023 | |
261 | fprintf (stderr, "0 %f, %d c%d\n", w->at, w->active, timercnt);//D |
1024 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
|
|
1025 | |
262 | /* first reschedule timer */ |
1026 | /* first reschedule or stop timer */ |
263 | if (w->repeat) |
1027 | if (w->repeat) |
264 | { |
1028 | { |
265 | fprintf (stderr, "a %f now %f repeat %f, %f\n", w->at, ev_now, w->repeat, w->repeat *1e30);//D |
1029 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
266 | if (w->is_abs) |
1030 | |
267 | w->at += ceil ((ev_now - w->at) / w->repeat + 1.) * w->repeat; |
|
|
268 | else |
|
|
269 | w->at = ev_now + w->repeat; |
1031 | ((WT)w)->at += w->repeat; |
|
|
1032 | if (((WT)w)->at < mn_now) |
|
|
1033 | ((WT)w)->at = mn_now; |
270 | |
1034 | |
271 | fprintf (stderr, "b %f\n", w->at);//D |
1035 | downheap ((WT *)timers, timercnt, 0); |
272 | |
|
|
273 | downheap (0); |
|
|
274 | } |
1036 | } |
275 | else |
1037 | else |
|
|
1038 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1039 | |
|
|
1040 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
1041 | } |
|
|
1042 | } |
|
|
1043 | |
|
|
1044 | #if EV_PERIODICS |
|
|
1045 | static void |
|
|
1046 | periodics_reify (EV_P) |
|
|
1047 | { |
|
|
1048 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
|
|
1049 | { |
|
|
1050 | struct ev_periodic *w = periodics [0]; |
|
|
1051 | |
|
|
1052 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
|
|
1053 | |
|
|
1054 | /* first reschedule or stop timer */ |
|
|
1055 | if (w->reschedule_cb) |
276 | { |
1056 | { |
277 | fprintf (stderr, "c %f, %d c%d\n", w->at, w->active, timercnt);//D |
1057 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); |
278 | evtimer_stop (w); /* nonrepeating: stop timer */ |
1058 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
|
|
1059 | downheap ((WT *)periodics, periodiccnt, 0); |
279 | } |
1060 | } |
|
|
1061 | else if (w->interval) |
|
|
1062 | { |
|
|
1063 | ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
|
|
1064 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
|
|
1065 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1066 | } |
|
|
1067 | else |
|
|
1068 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
280 | |
1069 | |
281 | event ((struct ev_watcher *)w, EV_TIMEOUT); |
1070 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
|
|
1071 | } |
|
|
1072 | } |
|
|
1073 | |
|
|
1074 | static void |
|
|
1075 | periodics_reschedule (EV_P) |
|
|
1076 | { |
|
|
1077 | int i; |
|
|
1078 | |
|
|
1079 | /* adjust periodics after time jump */ |
|
|
1080 | for (i = 0; i < periodiccnt; ++i) |
282 | } |
1081 | { |
283 | } |
1082 | struct ev_periodic *w = periodics [i]; |
284 | |
1083 | |
285 | int ev_loop_done; |
1084 | if (w->reschedule_cb) |
|
|
1085 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1086 | else if (w->interval) |
|
|
1087 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1088 | } |
286 | |
1089 | |
|
|
1090 | /* now rebuild the heap */ |
|
|
1091 | for (i = periodiccnt >> 1; i--; ) |
|
|
1092 | downheap ((WT *)periodics, periodiccnt, i); |
|
|
1093 | } |
|
|
1094 | #endif |
|
|
1095 | |
|
|
1096 | inline int |
|
|
1097 | time_update_monotonic (EV_P) |
|
|
1098 | { |
|
|
1099 | mn_now = get_clock (); |
|
|
1100 | |
|
|
1101 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
1102 | { |
|
|
1103 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1104 | return 0; |
|
|
1105 | } |
|
|
1106 | else |
|
|
1107 | { |
|
|
1108 | now_floor = mn_now; |
|
|
1109 | ev_rt_now = ev_time (); |
|
|
1110 | return 1; |
|
|
1111 | } |
|
|
1112 | } |
|
|
1113 | |
|
|
1114 | static void |
|
|
1115 | time_update (EV_P) |
|
|
1116 | { |
|
|
1117 | int i; |
|
|
1118 | |
|
|
1119 | #if EV_USE_MONOTONIC |
|
|
1120 | if (expect_true (have_monotonic)) |
|
|
1121 | { |
|
|
1122 | if (time_update_monotonic (EV_A)) |
|
|
1123 | { |
|
|
1124 | ev_tstamp odiff = rtmn_diff; |
|
|
1125 | |
|
|
1126 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
1127 | { |
|
|
1128 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1129 | |
|
|
1130 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
|
|
1131 | return; /* all is well */ |
|
|
1132 | |
|
|
1133 | ev_rt_now = ev_time (); |
|
|
1134 | mn_now = get_clock (); |
|
|
1135 | now_floor = mn_now; |
|
|
1136 | } |
|
|
1137 | |
|
|
1138 | # if EV_PERIODICS |
|
|
1139 | periodics_reschedule (EV_A); |
|
|
1140 | # endif |
|
|
1141 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1142 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
1143 | } |
|
|
1144 | } |
|
|
1145 | else |
|
|
1146 | #endif |
|
|
1147 | { |
|
|
1148 | ev_rt_now = ev_time (); |
|
|
1149 | |
|
|
1150 | if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
|
|
1151 | { |
|
|
1152 | #if EV_PERIODICS |
|
|
1153 | periodics_reschedule (EV_A); |
|
|
1154 | #endif |
|
|
1155 | |
|
|
1156 | /* adjust timers. this is easy, as the offset is the same for all */ |
|
|
1157 | for (i = 0; i < timercnt; ++i) |
|
|
1158 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
|
|
1159 | } |
|
|
1160 | |
|
|
1161 | mn_now = ev_rt_now; |
|
|
1162 | } |
|
|
1163 | } |
|
|
1164 | |
|
|
1165 | void |
|
|
1166 | ev_ref (EV_P) |
|
|
1167 | { |
|
|
1168 | ++activecnt; |
|
|
1169 | } |
|
|
1170 | |
|
|
1171 | void |
|
|
1172 | ev_unref (EV_P) |
|
|
1173 | { |
|
|
1174 | --activecnt; |
|
|
1175 | } |
|
|
1176 | |
|
|
1177 | static int loop_done; |
|
|
1178 | |
|
|
1179 | void |
287 | int ev_loop (int flags) |
1180 | ev_loop (EV_P_ int flags) |
288 | { |
1181 | { |
289 | double block; |
1182 | double block; |
290 | ev_loop_done = flags & EVLOOP_ONESHOT; |
1183 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
291 | |
1184 | |
292 | do |
1185 | while (activecnt) |
293 | { |
1186 | { |
|
|
1187 | /* queue check watchers (and execute them) */ |
|
|
1188 | if (expect_false (preparecnt)) |
|
|
1189 | { |
|
|
1190 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
|
|
1191 | call_pending (EV_A); |
|
|
1192 | } |
|
|
1193 | |
|
|
1194 | /* we might have forked, so reify kernel state if necessary */ |
|
|
1195 | if (expect_false (postfork)) |
|
|
1196 | loop_fork (EV_A); |
|
|
1197 | |
294 | /* update fd-related kernel structures */ |
1198 | /* update fd-related kernel structures */ |
295 | method_reify (); fdchangecnt = 0; |
1199 | fd_reify (EV_A); |
296 | |
1200 | |
297 | /* calculate blocking time */ |
1201 | /* calculate blocking time */ |
|
|
1202 | |
|
|
1203 | /* we only need this for !monotonic clock or timers, but as we basically |
|
|
1204 | always have timers, we just calculate it always */ |
|
|
1205 | #if EV_USE_MONOTONIC |
|
|
1206 | if (expect_true (have_monotonic)) |
|
|
1207 | time_update_monotonic (EV_A); |
|
|
1208 | else |
|
|
1209 | #endif |
|
|
1210 | { |
298 | ev_now = ev_time (); |
1211 | ev_rt_now = ev_time (); |
|
|
1212 | mn_now = ev_rt_now; |
|
|
1213 | } |
299 | |
1214 | |
300 | if (flags & EVLOOP_NONBLOCK) |
1215 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
301 | block = 0.; |
1216 | block = 0.; |
302 | else if (!timercnt) |
|
|
303 | block = MAX_BLOCKTIME; |
|
|
304 | else |
1217 | else |
305 | { |
1218 | { |
|
|
1219 | block = MAX_BLOCKTIME; |
|
|
1220 | |
|
|
1221 | if (timercnt) |
|
|
1222 | { |
306 | block = timers [0]->at - ev_now + method_fudge; |
1223 | ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; |
|
|
1224 | if (block > to) block = to; |
|
|
1225 | } |
|
|
1226 | |
|
|
1227 | #if EV_PERIODICS |
|
|
1228 | if (periodiccnt) |
|
|
1229 | { |
|
|
1230 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; |
|
|
1231 | if (block > to) block = to; |
|
|
1232 | } |
|
|
1233 | #endif |
|
|
1234 | |
307 | if (block < 0.) block = 0.; |
1235 | if (block < 0.) block = 0.; |
308 | else if (block > MAX_BLOCKTIME) block = MAX_BLOCKTIME; |
|
|
309 | } |
1236 | } |
310 | |
1237 | |
311 | fprintf (stderr, "block %f\n", block);//D |
|
|
312 | method_poll (block); |
1238 | method_poll (EV_A_ block); |
313 | |
1239 | |
|
|
1240 | /* update ev_rt_now, do magic */ |
|
|
1241 | time_update (EV_A); |
|
|
1242 | |
314 | /* put pending timers into pendign queue and reschedule them */ |
1243 | /* queue pending timers and reschedule them */ |
315 | timer_reify (); |
1244 | timers_reify (EV_A); /* relative timers called last */ |
|
|
1245 | #if EV_PERIODICS |
|
|
1246 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
1247 | #endif |
316 | |
1248 | |
317 | ev_now = ev_time (); |
1249 | /* queue idle watchers unless io or timers are pending */ |
|
|
1250 | if (idlecnt && !any_pending (EV_A)) |
|
|
1251 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
|
|
1252 | |
|
|
1253 | /* queue check watchers, to be executed first */ |
|
|
1254 | if (checkcnt) |
|
|
1255 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
|
|
1256 | |
318 | call_pending (); |
1257 | call_pending (EV_A); |
319 | } |
|
|
320 | while (!ev_loop_done); |
|
|
321 | } |
|
|
322 | |
1258 | |
323 | static void |
1259 | if (loop_done) |
324 | wlist_add (struct ev_watcher_list **head, struct ev_watcher_list *elem) |
1260 | break; |
|
|
1261 | } |
|
|
1262 | |
|
|
1263 | if (loop_done != 2) |
|
|
1264 | loop_done = 0; |
|
|
1265 | } |
|
|
1266 | |
|
|
1267 | void |
|
|
1268 | ev_unloop (EV_P_ int how) |
|
|
1269 | { |
|
|
1270 | loop_done = how; |
|
|
1271 | } |
|
|
1272 | |
|
|
1273 | /*****************************************************************************/ |
|
|
1274 | |
|
|
1275 | inline void |
|
|
1276 | wlist_add (WL *head, WL elem) |
325 | { |
1277 | { |
326 | elem->next = *head; |
1278 | elem->next = *head; |
327 | *head = elem; |
1279 | *head = elem; |
328 | } |
1280 | } |
329 | |
1281 | |
330 | static void |
1282 | inline void |
331 | wlist_del (struct ev_watcher_list **head, struct ev_watcher_list *elem) |
1283 | wlist_del (WL *head, WL elem) |
332 | { |
1284 | { |
333 | while (*head) |
1285 | while (*head) |
334 | { |
1286 | { |
335 | if (*head == elem) |
1287 | if (*head == elem) |
336 | { |
1288 | { |
… | |
… | |
340 | |
1292 | |
341 | head = &(*head)->next; |
1293 | head = &(*head)->next; |
342 | } |
1294 | } |
343 | } |
1295 | } |
344 | |
1296 | |
345 | static void |
1297 | inline void |
346 | ev_start (struct ev_watcher *w, int active) |
1298 | ev_clear_pending (EV_P_ W w) |
347 | { |
1299 | { |
|
|
1300 | if (w->pending) |
|
|
1301 | { |
|
|
1302 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
348 | w->pending = 0; |
1303 | w->pending = 0; |
|
|
1304 | } |
|
|
1305 | } |
|
|
1306 | |
|
|
1307 | inline void |
|
|
1308 | ev_start (EV_P_ W w, int active) |
|
|
1309 | { |
|
|
1310 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1311 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1312 | |
349 | w->active = active; |
1313 | w->active = active; |
|
|
1314 | ev_ref (EV_A); |
350 | } |
1315 | } |
351 | |
1316 | |
352 | static void |
1317 | inline void |
353 | ev_stop (struct ev_watcher *w) |
1318 | ev_stop (EV_P_ W w) |
354 | { |
1319 | { |
355 | if (w->pending) |
1320 | ev_unref (EV_A); |
356 | pendings [w->pending - 1].w = 0; |
|
|
357 | |
|
|
358 | w->active = 0; |
1321 | w->active = 0; |
359 | /* nop */ |
|
|
360 | } |
1322 | } |
361 | |
1323 | |
|
|
1324 | /*****************************************************************************/ |
|
|
1325 | |
362 | void |
1326 | void |
363 | evio_start (struct ev_io *w) |
1327 | ev_io_start (EV_P_ struct ev_io *w) |
364 | { |
1328 | { |
|
|
1329 | int fd = w->fd; |
|
|
1330 | |
365 | if (ev_is_active (w)) |
1331 | if (ev_is_active (w)) |
366 | return; |
1332 | return; |
367 | |
1333 | |
368 | int fd = w->fd; |
1334 | assert (("ev_io_start called with negative fd", fd >= 0)); |
369 | |
1335 | |
370 | ev_start ((struct ev_watcher *)w, 1); |
1336 | ev_start (EV_A_ (W)w, 1); |
371 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1337 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
372 | wlist_add ((struct ev_watcher_list **)&anfds[fd].head, (struct ev_watcher_list *)w); |
1338 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
373 | |
1339 | |
374 | ++fdchangecnt; |
1340 | fd_change (EV_A_ fd); |
375 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
376 | fdchanges [fdchangecnt - 1] = fd; |
|
|
377 | } |
1341 | } |
378 | |
1342 | |
379 | void |
1343 | void |
380 | evio_stop (struct ev_io *w) |
1344 | ev_io_stop (EV_P_ struct ev_io *w) |
381 | { |
1345 | { |
|
|
1346 | ev_clear_pending (EV_A_ (W)w); |
382 | if (!ev_is_active (w)) |
1347 | if (!ev_is_active (w)) |
383 | return; |
1348 | return; |
384 | |
1349 | |
385 | wlist_del ((struct ev_watcher_list **)&anfds[w->fd].head, (struct ev_watcher_list *)w); |
1350 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
386 | ev_stop ((struct ev_watcher *)w); |
|
|
387 | |
1351 | |
388 | ++fdchangecnt; |
1352 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
389 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
1353 | ev_stop (EV_A_ (W)w); |
390 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
391 | } |
|
|
392 | |
1354 | |
|
|
1355 | fd_change (EV_A_ w->fd); |
|
|
1356 | } |
|
|
1357 | |
393 | void |
1358 | void |
394 | evtimer_start (struct ev_timer *w) |
1359 | ev_timer_start (EV_P_ struct ev_timer *w) |
395 | { |
1360 | { |
396 | if (ev_is_active (w)) |
1361 | if (ev_is_active (w)) |
397 | return; |
1362 | return; |
398 | |
1363 | |
399 | fprintf (stderr, "t1 %f a %d\n", w->at, w->is_abs);//D |
1364 | ((WT)w)->at += mn_now; |
400 | if (w->is_abs) |
1365 | |
|
|
1366 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
|
|
1367 | |
|
|
1368 | ev_start (EV_A_ (W)w, ++timercnt); |
|
|
1369 | array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2); |
|
|
1370 | timers [timercnt - 1] = w; |
|
|
1371 | upheap ((WT *)timers, timercnt - 1); |
|
|
1372 | |
|
|
1373 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1374 | } |
|
|
1375 | |
|
|
1376 | void |
|
|
1377 | ev_timer_stop (EV_P_ struct ev_timer *w) |
|
|
1378 | { |
|
|
1379 | ev_clear_pending (EV_A_ (W)w); |
|
|
1380 | if (!ev_is_active (w)) |
|
|
1381 | return; |
|
|
1382 | |
|
|
1383 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1384 | |
|
|
1385 | if (((W)w)->active < timercnt--) |
|
|
1386 | { |
|
|
1387 | timers [((W)w)->active - 1] = timers [timercnt]; |
|
|
1388 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
401 | { |
1389 | } |
402 | /* this formula differs from the one in timer_reify becuse we do not round up */ |
1390 | |
|
|
1391 | ((WT)w)->at -= mn_now; |
|
|
1392 | |
|
|
1393 | ev_stop (EV_A_ (W)w); |
|
|
1394 | } |
|
|
1395 | |
|
|
1396 | void |
|
|
1397 | ev_timer_again (EV_P_ struct ev_timer *w) |
|
|
1398 | { |
|
|
1399 | if (ev_is_active (w)) |
|
|
1400 | { |
403 | if (w->repeat) |
1401 | if (w->repeat) |
404 | w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat; |
1402 | { |
|
|
1403 | ((WT)w)->at = mn_now + w->repeat; |
|
|
1404 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
|
|
1405 | } |
|
|
1406 | else |
|
|
1407 | ev_timer_stop (EV_A_ w); |
|
|
1408 | } |
|
|
1409 | else if (w->repeat) |
405 | } |
1410 | { |
|
|
1411 | w->at = w->repeat; |
|
|
1412 | ev_timer_start (EV_A_ w); |
|
|
1413 | } |
|
|
1414 | } |
|
|
1415 | |
|
|
1416 | #if EV_PERIODICS |
|
|
1417 | void |
|
|
1418 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
|
|
1419 | { |
|
|
1420 | if (ev_is_active (w)) |
|
|
1421 | return; |
|
|
1422 | |
|
|
1423 | if (w->reschedule_cb) |
|
|
1424 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1425 | else if (w->interval) |
|
|
1426 | { |
|
|
1427 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
|
|
1428 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
|
|
1429 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1430 | } |
|
|
1431 | |
|
|
1432 | ev_start (EV_A_ (W)w, ++periodiccnt); |
|
|
1433 | array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); |
|
|
1434 | periodics [periodiccnt - 1] = w; |
|
|
1435 | upheap ((WT *)periodics, periodiccnt - 1); |
|
|
1436 | |
|
|
1437 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1438 | } |
|
|
1439 | |
|
|
1440 | void |
|
|
1441 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
|
|
1442 | { |
|
|
1443 | ev_clear_pending (EV_A_ (W)w); |
|
|
1444 | if (!ev_is_active (w)) |
|
|
1445 | return; |
|
|
1446 | |
|
|
1447 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1448 | |
|
|
1449 | if (((W)w)->active < periodiccnt--) |
|
|
1450 | { |
|
|
1451 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
|
|
1452 | adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
|
|
1453 | } |
|
|
1454 | |
|
|
1455 | ev_stop (EV_A_ (W)w); |
|
|
1456 | } |
|
|
1457 | |
|
|
1458 | void |
|
|
1459 | ev_periodic_again (EV_P_ struct ev_periodic *w) |
|
|
1460 | { |
|
|
1461 | /* TODO: use adjustheap and recalculation */ |
|
|
1462 | ev_periodic_stop (EV_A_ w); |
|
|
1463 | ev_periodic_start (EV_A_ w); |
|
|
1464 | } |
|
|
1465 | #endif |
|
|
1466 | |
|
|
1467 | void |
|
|
1468 | ev_idle_start (EV_P_ struct ev_idle *w) |
|
|
1469 | { |
|
|
1470 | if (ev_is_active (w)) |
|
|
1471 | return; |
|
|
1472 | |
|
|
1473 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1474 | array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2); |
|
|
1475 | idles [idlecnt - 1] = w; |
|
|
1476 | } |
|
|
1477 | |
|
|
1478 | void |
|
|
1479 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1480 | { |
|
|
1481 | ev_clear_pending (EV_A_ (W)w); |
|
|
1482 | if (!ev_is_active (w)) |
|
|
1483 | return; |
|
|
1484 | |
|
|
1485 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
|
|
1486 | ev_stop (EV_A_ (W)w); |
|
|
1487 | } |
|
|
1488 | |
|
|
1489 | void |
|
|
1490 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1491 | { |
|
|
1492 | if (ev_is_active (w)) |
|
|
1493 | return; |
|
|
1494 | |
|
|
1495 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1496 | array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
|
|
1497 | prepares [preparecnt - 1] = w; |
|
|
1498 | } |
|
|
1499 | |
|
|
1500 | void |
|
|
1501 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1502 | { |
|
|
1503 | ev_clear_pending (EV_A_ (W)w); |
|
|
1504 | if (!ev_is_active (w)) |
|
|
1505 | return; |
|
|
1506 | |
|
|
1507 | prepares [((W)w)->active - 1] = prepares [--preparecnt]; |
|
|
1508 | ev_stop (EV_A_ (W)w); |
|
|
1509 | } |
|
|
1510 | |
|
|
1511 | void |
|
|
1512 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1513 | { |
|
|
1514 | if (ev_is_active (w)) |
|
|
1515 | return; |
|
|
1516 | |
|
|
1517 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1518 | array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
1519 | checks [checkcnt - 1] = w; |
|
|
1520 | } |
|
|
1521 | |
|
|
1522 | void |
|
|
1523 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1524 | { |
|
|
1525 | ev_clear_pending (EV_A_ (W)w); |
|
|
1526 | if (!ev_is_active (w)) |
|
|
1527 | return; |
|
|
1528 | |
|
|
1529 | checks [((W)w)->active - 1] = checks [--checkcnt]; |
|
|
1530 | ev_stop (EV_A_ (W)w); |
|
|
1531 | } |
|
|
1532 | |
|
|
1533 | #ifndef SA_RESTART |
|
|
1534 | # define SA_RESTART 0 |
|
|
1535 | #endif |
|
|
1536 | |
|
|
1537 | void |
|
|
1538 | ev_signal_start (EV_P_ struct ev_signal *w) |
|
|
1539 | { |
|
|
1540 | #if EV_MULTIPLICITY |
|
|
1541 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1542 | #endif |
|
|
1543 | if (ev_is_active (w)) |
|
|
1544 | return; |
|
|
1545 | |
|
|
1546 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1547 | |
|
|
1548 | ev_start (EV_A_ (W)w, 1); |
|
|
1549 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
|
|
1550 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
1551 | |
|
|
1552 | if (!((WL)w)->next) |
|
|
1553 | { |
|
|
1554 | #if _WIN32 |
|
|
1555 | signal (w->signum, sighandler); |
|
|
1556 | #else |
|
|
1557 | struct sigaction sa; |
|
|
1558 | sa.sa_handler = sighandler; |
|
|
1559 | sigfillset (&sa.sa_mask); |
|
|
1560 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
1561 | sigaction (w->signum, &sa, 0); |
|
|
1562 | #endif |
|
|
1563 | } |
|
|
1564 | } |
|
|
1565 | |
|
|
1566 | void |
|
|
1567 | ev_signal_stop (EV_P_ struct ev_signal *w) |
|
|
1568 | { |
|
|
1569 | ev_clear_pending (EV_A_ (W)w); |
|
|
1570 | if (!ev_is_active (w)) |
|
|
1571 | return; |
|
|
1572 | |
|
|
1573 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
1574 | ev_stop (EV_A_ (W)w); |
|
|
1575 | |
|
|
1576 | if (!signals [w->signum - 1].head) |
|
|
1577 | signal (w->signum, SIG_DFL); |
|
|
1578 | } |
|
|
1579 | |
|
|
1580 | void |
|
|
1581 | ev_child_start (EV_P_ struct ev_child *w) |
|
|
1582 | { |
|
|
1583 | #if EV_MULTIPLICITY |
|
|
1584 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1585 | #endif |
|
|
1586 | if (ev_is_active (w)) |
|
|
1587 | return; |
|
|
1588 | |
|
|
1589 | ev_start (EV_A_ (W)w, 1); |
|
|
1590 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1591 | } |
|
|
1592 | |
|
|
1593 | void |
|
|
1594 | ev_child_stop (EV_P_ struct ev_child *w) |
|
|
1595 | { |
|
|
1596 | ev_clear_pending (EV_A_ (W)w); |
|
|
1597 | if (!ev_is_active (w)) |
|
|
1598 | return; |
|
|
1599 | |
|
|
1600 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1601 | ev_stop (EV_A_ (W)w); |
|
|
1602 | } |
|
|
1603 | |
|
|
1604 | /*****************************************************************************/ |
|
|
1605 | |
|
|
1606 | struct ev_once |
|
|
1607 | { |
|
|
1608 | struct ev_io io; |
|
|
1609 | struct ev_timer to; |
|
|
1610 | void (*cb)(int revents, void *arg); |
|
|
1611 | void *arg; |
|
|
1612 | }; |
|
|
1613 | |
|
|
1614 | static void |
|
|
1615 | once_cb (EV_P_ struct ev_once *once, int revents) |
|
|
1616 | { |
|
|
1617 | void (*cb)(int revents, void *arg) = once->cb; |
|
|
1618 | void *arg = once->arg; |
|
|
1619 | |
|
|
1620 | ev_io_stop (EV_A_ &once->io); |
|
|
1621 | ev_timer_stop (EV_A_ &once->to); |
|
|
1622 | ev_free (once); |
|
|
1623 | |
|
|
1624 | cb (revents, arg); |
|
|
1625 | } |
|
|
1626 | |
|
|
1627 | static void |
|
|
1628 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
|
|
1629 | { |
|
|
1630 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
|
|
1631 | } |
|
|
1632 | |
|
|
1633 | static void |
|
|
1634 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
|
|
1635 | { |
|
|
1636 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
|
|
1637 | } |
|
|
1638 | |
|
|
1639 | void |
|
|
1640 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
|
|
1641 | { |
|
|
1642 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
|
|
1643 | |
|
|
1644 | if (!once) |
|
|
1645 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
406 | else |
1646 | 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; |
|
|
413 | upheap (timercnt - 1); |
|
|
414 | } |
|
|
415 | |
|
|
416 | void |
|
|
417 | evtimer_stop (struct ev_timer *w) |
|
|
418 | { |
|
|
419 | fprintf (stderr, "-topping %d, %d\n", w->active, timercnt);//D |
|
|
420 | if (!ev_is_active (w)) |
|
|
421 | return; |
|
|
422 | |
|
|
423 | fprintf (stderr, "stopping %d, %d\n", w->active, timercnt);//D |
|
|
424 | if (w->active < timercnt) |
|
|
425 | { |
|
|
426 | timers [w->active - 1] = timers [--timercnt]; |
|
|
427 | downheap (w->active - 1); |
|
|
428 | } |
1647 | { |
|
|
1648 | once->cb = cb; |
|
|
1649 | once->arg = arg; |
429 | |
1650 | |
430 | ev_stop ((struct ev_watcher *)w); |
1651 | ev_init (&once->io, once_cb_io); |
431 | } |
1652 | if (fd >= 0) |
|
|
1653 | { |
|
|
1654 | ev_io_set (&once->io, fd, events); |
|
|
1655 | ev_io_start (EV_A_ &once->io); |
|
|
1656 | } |
432 | |
1657 | |
433 | void |
1658 | ev_init (&once->to, once_cb_to); |
434 | evsignal_start (struct ev_signal *w) |
1659 | if (timeout >= 0.) |
435 | { |
1660 | { |
436 | if (ev_is_active (w)) |
1661 | ev_timer_set (&once->to, timeout, 0.); |
437 | return; |
1662 | ev_timer_start (EV_A_ &once->to); |
438 | |
1663 | } |
439 | ev_start ((struct ev_watcher *)w, 1); |
|
|
440 | array_needsize (signals, signalmax, w->signum, signals_init); |
|
|
441 | wlist_add ((struct ev_watcher_list **)&signals [w->signum - 1], (struct ev_watcher_list *)w); |
|
|
442 | } |
|
|
443 | |
|
|
444 | void |
|
|
445 | evsignal_stop (struct ev_signal *w) |
|
|
446 | { |
|
|
447 | if (!ev_is_active (w)) |
|
|
448 | return; |
|
|
449 | |
|
|
450 | wlist_del ((struct ev_watcher_list **)&signals [w->signum - 1], (struct ev_watcher_list *)w); |
|
|
451 | ev_stop ((struct ev_watcher *)w); |
|
|
452 | } |
|
|
453 | |
|
|
454 | /*****************************************************************************/ |
|
|
455 | #if 1 |
|
|
456 | |
|
|
457 | static void |
|
|
458 | sin_cb (struct ev_io *w, int revents) |
|
|
459 | { |
|
|
460 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
461 | } |
|
|
462 | |
|
|
463 | static void |
|
|
464 | ocb (struct ev_timer *w, int revents) |
|
|
465 | { |
|
|
466 | fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
467 | } |
|
|
468 | |
|
|
469 | int main (void) |
|
|
470 | { |
|
|
471 | struct ev_io sin; |
|
|
472 | |
|
|
473 | ev_init (0); |
|
|
474 | |
|
|
475 | evw_init (&sin, sin_cb, 55); |
|
|
476 | evio_set (&sin, 0, EV_READ); |
|
|
477 | evio_start (&sin); |
|
|
478 | |
|
|
479 | struct ev_timer t[1000]; |
|
|
480 | |
|
|
481 | int i; |
|
|
482 | for (i = 0; i < 1000; ++i) |
|
|
483 | { |
1664 | } |
484 | struct ev_timer *w = t + i; |
|
|
485 | evw_init (w, ocb, i); |
|
|
486 | evtimer_set_rel (w, drand48 (), 0); |
|
|
487 | evtimer_start (w); |
|
|
488 | if (drand48 () < 0.5) |
|
|
489 | evtimer_stop (w); |
|
|
490 | } |
|
|
491 | |
|
|
492 | ev_loop (0); |
|
|
493 | |
|
|
494 | return 0; |
|
|
495 | } |
1665 | } |
496 | |
1666 | |
|
|
1667 | #ifdef __cplusplus |
|
|
1668 | } |
497 | #endif |
1669 | #endif |
498 | |
1670 | |
499 | |
|
|
500 | |
|
|
501 | |
|
|