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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 | #endif |
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65 | |
1 | #include <math.h> |
66 | #include <math.h> |
2 | #include <stdlib.h> |
67 | #include <stdlib.h> |
3 | #include <unistd.h> |
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4 | #include <fcntl.h> |
68 | #include <fcntl.h> |
5 | #include <signal.h> |
69 | #include <stddef.h> |
6 | |
70 | |
7 | #include <stdio.h> |
71 | #include <stdio.h> |
8 | |
72 | |
9 | #include <assert.h> |
73 | #include <assert.h> |
10 | #include <errno.h> |
74 | #include <errno.h> |
11 | #include <sys/time.h> |
75 | #include <sys/types.h> |
12 | #include <time.h> |
76 | #include <time.h> |
13 | |
77 | |
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78 | #include <signal.h> |
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79 | |
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80 | #ifndef _WIN32 |
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81 | # include <unistd.h> |
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82 | # include <sys/time.h> |
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83 | # include <sys/wait.h> |
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84 | #else |
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85 | # define WIN32_LEAN_AND_MEAN |
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86 | # include <windows.h> |
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87 | # ifndef EV_SELECT_IS_WINSOCKET |
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88 | # define EV_SELECT_IS_WINSOCKET 1 |
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89 | # endif |
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90 | #endif |
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91 | |
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92 | /**/ |
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93 | |
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94 | #ifndef EV_USE_MONOTONIC |
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95 | # define EV_USE_MONOTONIC 1 |
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96 | #endif |
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97 | |
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98 | #ifndef EV_USE_SELECT |
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99 | # define EV_USE_SELECT 1 |
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100 | # define EV_SELECT_USE_FD_SET 1 |
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101 | #endif |
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102 | |
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103 | #ifndef EV_USE_POLL |
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104 | # ifdef _WIN32 |
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105 | # define EV_USE_POLL 0 |
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106 | # else |
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107 | # define EV_USE_POLL 1 |
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108 | # endif |
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109 | #endif |
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110 | |
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111 | #ifndef EV_USE_EPOLL |
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112 | # define EV_USE_EPOLL 0 |
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113 | #endif |
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114 | |
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115 | #ifndef EV_USE_KQUEUE |
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116 | # define EV_USE_KQUEUE 0 |
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117 | #endif |
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118 | |
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119 | #ifndef EV_USE_REALTIME |
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120 | # define EV_USE_REALTIME 1 |
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121 | #endif |
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122 | |
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123 | /**/ |
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124 | |
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125 | /* darwin simply cnanot be helped */ |
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126 | #ifdef __APPLE__ |
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127 | # undef EV_USE_POLL |
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128 | # undef EV_USE_KQUEUE |
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129 | #endif |
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130 | |
14 | #ifdef CLOCK_MONOTONIC |
131 | #ifndef CLOCK_MONOTONIC |
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132 | # undef EV_USE_MONOTONIC |
15 | # define HAVE_MONOTONIC 1 |
133 | # define EV_USE_MONOTONIC 0 |
16 | #endif |
134 | #endif |
17 | |
135 | |
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136 | #ifndef CLOCK_REALTIME |
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137 | # undef EV_USE_REALTIME |
18 | #define HAVE_REALTIME 1 |
138 | # define EV_USE_REALTIME 0 |
19 | #define HAVE_EPOLL 1 |
139 | #endif |
20 | #define HAVE_SELECT 1 |
140 | |
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141 | #if EV_SELECT_IS_WINSOCKET |
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142 | # include <winsock.h> |
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143 | #endif |
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144 | |
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145 | /**/ |
21 | |
146 | |
22 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
147 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
23 | #define MAX_BLOCKTIME 60. |
148 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ |
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149 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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150 | /*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ |
24 | |
151 | |
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152 | #ifdef EV_H |
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153 | # include EV_H |
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154 | #else |
25 | #include "ev.h" |
155 | # include "ev.h" |
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156 | #endif |
26 | |
157 | |
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158 | #if __GNUC__ >= 3 |
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159 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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160 | # define inline inline |
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161 | #else |
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162 | # define expect(expr,value) (expr) |
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163 | # define inline static |
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164 | #endif |
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165 | |
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166 | #define expect_false(expr) expect ((expr) != 0, 0) |
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167 | #define expect_true(expr) expect ((expr) != 0, 1) |
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168 | |
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169 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
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170 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
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171 | |
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172 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
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173 | |
27 | struct ev_watcher { |
174 | typedef struct ev_watcher *W; |
28 | EV_WATCHER (ev_watcher); |
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29 | }; |
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30 | |
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31 | struct ev_watcher_list { |
175 | typedef struct ev_watcher_list *WL; |
32 | EV_WATCHER_LIST (ev_watcher_list); |
176 | typedef struct ev_watcher_time *WT; |
33 | }; |
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34 | |
177 | |
35 | static ev_tstamp now, diff; /* monotonic clock */ |
178 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
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179 | |
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180 | #ifdef _WIN32 |
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181 | # include "ev_win32.c" |
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182 | #endif |
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183 | |
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184 | /*****************************************************************************/ |
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185 | |
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186 | static void (*syserr_cb)(const char *msg); |
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187 | |
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188 | void ev_set_syserr_cb (void (*cb)(const char *msg)) |
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189 | { |
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190 | syserr_cb = cb; |
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191 | } |
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192 | |
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193 | static void |
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194 | syserr (const char *msg) |
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195 | { |
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196 | if (!msg) |
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197 | msg = "(libev) system error"; |
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198 | |
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199 | if (syserr_cb) |
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200 | syserr_cb (msg); |
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201 | else |
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202 | { |
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203 | perror (msg); |
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204 | abort (); |
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205 | } |
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206 | } |
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207 | |
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208 | static void *(*alloc)(void *ptr, long size); |
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209 | |
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210 | void ev_set_allocator (void *(*cb)(void *ptr, long size)) |
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211 | { |
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212 | alloc = cb; |
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213 | } |
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214 | |
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215 | static void * |
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216 | ev_realloc (void *ptr, long size) |
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217 | { |
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218 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
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219 | |
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220 | if (!ptr && size) |
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221 | { |
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222 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
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223 | abort (); |
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224 | } |
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225 | |
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226 | return ptr; |
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227 | } |
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228 | |
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229 | #define ev_malloc(size) ev_realloc (0, (size)) |
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230 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
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231 | |
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232 | /*****************************************************************************/ |
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233 | |
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234 | typedef struct |
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235 | { |
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236 | WL head; |
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237 | unsigned char events; |
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238 | unsigned char reify; |
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239 | #if EV_SELECT_IS_WINSOCKET |
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240 | SOCKET handle; |
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241 | #endif |
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242 | } ANFD; |
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243 | |
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244 | typedef struct |
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245 | { |
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246 | W w; |
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247 | int events; |
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248 | } ANPENDING; |
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249 | |
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250 | #if EV_MULTIPLICITY |
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251 | |
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252 | struct ev_loop |
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253 | { |
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254 | ev_tstamp ev_rt_now; |
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255 | #define ev_rt_now ((loop)->ev_rt_now) |
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256 | #define VAR(name,decl) decl; |
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257 | #include "ev_vars.h" |
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258 | #undef VAR |
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259 | }; |
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260 | #include "ev_wrap.h" |
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261 | |
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262 | struct ev_loop default_loop_struct; |
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263 | static struct ev_loop *default_loop; |
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264 | |
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265 | #else |
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266 | |
36 | ev_tstamp ev_now; |
267 | ev_tstamp ev_rt_now; |
37 | int ev_method; |
268 | #define VAR(name,decl) static decl; |
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269 | #include "ev_vars.h" |
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270 | #undef VAR |
38 | |
271 | |
39 | static int have_monotonic; /* runtime */ |
272 | static int default_loop; |
40 | |
273 | |
41 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
274 | #endif |
42 | static void (*method_modify)(int fd, int oev, int nev); |
275 | |
43 | static void (*method_poll)(ev_tstamp timeout); |
276 | /*****************************************************************************/ |
44 | |
277 | |
45 | ev_tstamp |
278 | ev_tstamp |
46 | ev_time (void) |
279 | ev_time (void) |
47 | { |
280 | { |
48 | #if HAVE_REALTIME |
281 | #if EV_USE_REALTIME |
49 | struct timespec ts; |
282 | struct timespec ts; |
50 | clock_gettime (CLOCK_REALTIME, &ts); |
283 | clock_gettime (CLOCK_REALTIME, &ts); |
51 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
284 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
52 | #else |
285 | #else |
53 | struct timeval tv; |
286 | struct timeval tv; |
54 | gettimeofday (&tv, 0); |
287 | gettimeofday (&tv, 0); |
55 | return tv.tv_sec + tv.tv_usec * 1e-6; |
288 | return tv.tv_sec + tv.tv_usec * 1e-6; |
56 | #endif |
289 | #endif |
57 | } |
290 | } |
58 | |
291 | |
59 | static ev_tstamp |
292 | inline ev_tstamp |
60 | get_clock (void) |
293 | get_clock (void) |
61 | { |
294 | { |
62 | #if HAVE_MONOTONIC |
295 | #if EV_USE_MONOTONIC |
63 | if (have_monotonic) |
296 | if (expect_true (have_monotonic)) |
64 | { |
297 | { |
65 | struct timespec ts; |
298 | struct timespec ts; |
66 | clock_gettime (CLOCK_MONOTONIC, &ts); |
299 | clock_gettime (CLOCK_MONOTONIC, &ts); |
67 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
300 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
68 | } |
301 | } |
69 | #endif |
302 | #endif |
70 | |
303 | |
71 | return ev_time (); |
304 | return ev_time (); |
72 | } |
305 | } |
73 | |
306 | |
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307 | #if EV_MULTIPLICITY |
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308 | ev_tstamp |
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309 | ev_now (EV_P) |
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310 | { |
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311 | return ev_rt_now; |
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312 | } |
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313 | #endif |
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314 | |
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315 | #define array_roundsize(type,n) ((n) | 4 & ~3) |
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316 | |
74 | #define array_needsize(base,cur,cnt,init) \ |
317 | #define array_needsize(type,base,cur,cnt,init) \ |
75 | if ((cnt) > cur) \ |
318 | if (expect_false ((cnt) > cur)) \ |
76 | { \ |
319 | { \ |
77 | int newcnt = cur ? cur << 1 : 16; \ |
320 | int newcnt = cur; \ |
78 | fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\ |
321 | do \ |
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322 | { \ |
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323 | newcnt = array_roundsize (type, newcnt << 1); \ |
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324 | } \ |
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325 | while ((cnt) > newcnt); \ |
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326 | \ |
79 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
327 | base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\ |
80 | init (base + cur, newcnt - cur); \ |
328 | init (base + cur, newcnt - cur); \ |
81 | cur = newcnt; \ |
329 | cur = newcnt; \ |
82 | } |
330 | } |
83 | |
331 | |
84 | typedef struct |
332 | #define array_slim(type,stem) \ |
85 | { |
333 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
86 | struct ev_io *head; |
334 | { \ |
87 | unsigned char wev, rev; /* want, received event set */ |
335 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
88 | } ANFD; |
336 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
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337 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
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338 | } |
89 | |
339 | |
90 | static ANFD *anfds; |
340 | #define array_free(stem, idx) \ |
91 | static int anfdmax; |
341 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
92 | |
342 | |
93 | static int *fdchanges; |
343 | /*****************************************************************************/ |
94 | static int fdchangemax, fdchangecnt; |
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95 | |
344 | |
96 | static void |
345 | static void |
97 | anfds_init (ANFD *base, int count) |
346 | anfds_init (ANFD *base, int count) |
98 | { |
347 | { |
99 | while (count--) |
348 | while (count--) |
100 | { |
349 | { |
101 | base->head = 0; |
350 | base->head = 0; |
102 | base->wev = base->rev = EV_NONE; |
351 | base->events = EV_NONE; |
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352 | base->reify = 0; |
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353 | |
103 | ++base; |
354 | ++base; |
104 | } |
355 | } |
105 | } |
356 | } |
106 | |
357 | |
107 | typedef struct |
358 | void |
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359 | ev_feed_event (EV_P_ void *w, int revents) |
108 | { |
360 | { |
109 | struct ev_watcher *w; |
361 | W w_ = (W)w; |
110 | int events; |
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111 | } ANPENDING; |
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112 | |
362 | |
113 | static ANPENDING *pendings; |
363 | if (w_->pending) |
114 | static int pendingmax, pendingcnt; |
364 | { |
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365 | pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; |
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366 | return; |
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367 | } |
115 | |
368 | |
116 | static void |
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117 | event (struct ev_watcher *w, int events) |
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118 | { |
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119 | w->pending = ++pendingcnt; |
369 | w_->pending = ++pendingcnt [ABSPRI (w_)]; |
120 | array_needsize (pendings, pendingmax, pendingcnt, ); |
370 | array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void)); |
121 | pendings [pendingcnt - 1].w = w; |
371 | pendings [ABSPRI (w_)][w_->pending - 1].w = w_; |
122 | pendings [pendingcnt - 1].events = events; |
372 | pendings [ABSPRI (w_)][w_->pending - 1].events = revents; |
123 | } |
373 | } |
124 | |
374 | |
125 | static void |
375 | static void |
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376 | queue_events (EV_P_ W *events, int eventcnt, int type) |
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377 | { |
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378 | int i; |
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379 | |
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380 | for (i = 0; i < eventcnt; ++i) |
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381 | ev_feed_event (EV_A_ events [i], type); |
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382 | } |
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383 | |
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384 | inline void |
126 | fd_event (int fd, int events) |
385 | fd_event (EV_P_ int fd, int revents) |
127 | { |
386 | { |
128 | ANFD *anfd = anfds + fd; |
387 | ANFD *anfd = anfds + fd; |
129 | struct ev_io *w; |
388 | struct ev_io *w; |
130 | |
389 | |
131 | for (w = anfd->head; w; w = w->next) |
390 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
132 | { |
391 | { |
133 | int ev = w->events & events; |
392 | int ev = w->events & revents; |
134 | |
393 | |
135 | if (ev) |
394 | if (ev) |
136 | event ((struct ev_watcher *)w, ev); |
395 | ev_feed_event (EV_A_ (W)w, ev); |
137 | } |
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138 | } |
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139 | |
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140 | static struct ev_timer **atimers; |
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141 | static int atimermax, atimercnt; |
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142 | |
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143 | static struct ev_timer **rtimers; |
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144 | static int rtimermax, rtimercnt; |
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145 | |
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146 | static void |
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147 | upheap (struct ev_timer **timers, int k) |
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148 | { |
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149 | struct ev_timer *w = timers [k]; |
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150 | |
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151 | while (k && timers [k >> 1]->at > w->at) |
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152 | { |
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153 | timers [k] = timers [k >> 1]; |
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154 | timers [k]->active = k + 1; |
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155 | k >>= 1; |
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156 | } |
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157 | |
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158 | timers [k] = w; |
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159 | timers [k]->active = k + 1; |
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160 | |
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161 | } |
|
|
162 | |
|
|
163 | static void |
|
|
164 | downheap (struct ev_timer **timers, int N, int k) |
|
|
165 | { |
|
|
166 | struct ev_timer *w = timers [k]; |
|
|
167 | |
|
|
168 | while (k < (N >> 1)) |
|
|
169 | { |
|
|
170 | int j = k << 1; |
|
|
171 | |
|
|
172 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
|
|
173 | ++j; |
|
|
174 | |
|
|
175 | if (w->at <= timers [j]->at) |
|
|
176 | break; |
|
|
177 | |
|
|
178 | timers [k] = timers [j]; |
|
|
179 | timers [k]->active = k + 1; |
|
|
180 | k = j; |
|
|
181 | } |
|
|
182 | |
|
|
183 | timers [k] = w; |
|
|
184 | timers [k]->active = k + 1; |
|
|
185 | } |
|
|
186 | |
|
|
187 | typedef struct |
|
|
188 | { |
|
|
189 | struct ev_signal *head; |
|
|
190 | sig_atomic_t gotsig; |
|
|
191 | } ANSIG; |
|
|
192 | |
|
|
193 | static ANSIG *signals; |
|
|
194 | static int signalmax; |
|
|
195 | |
|
|
196 | static int sigpipe [2]; |
|
|
197 | static sig_atomic_t gotsig; |
|
|
198 | static struct ev_io sigev; |
|
|
199 | |
|
|
200 | static void |
|
|
201 | signals_init (ANSIG *base, int count) |
|
|
202 | { |
|
|
203 | while (count--) |
|
|
204 | { |
|
|
205 | base->head = 0; |
|
|
206 | base->gotsig = 0; |
|
|
207 | ++base; |
|
|
208 | } |
|
|
209 | } |
|
|
210 | |
|
|
211 | static void |
|
|
212 | sighandler (int signum) |
|
|
213 | { |
|
|
214 | signals [signum - 1].gotsig = 1; |
|
|
215 | |
|
|
216 | if (!gotsig) |
|
|
217 | { |
|
|
218 | gotsig = 1; |
|
|
219 | write (sigpipe [1], &gotsig, 1); |
|
|
220 | } |
|
|
221 | } |
|
|
222 | |
|
|
223 | static void |
|
|
224 | sigcb (struct ev_io *iow, int revents) |
|
|
225 | { |
|
|
226 | struct ev_signal *w; |
|
|
227 | int sig; |
|
|
228 | |
|
|
229 | gotsig = 0; |
|
|
230 | read (sigpipe [0], &revents, 1); |
|
|
231 | |
|
|
232 | for (sig = signalmax; sig--; ) |
|
|
233 | if (signals [sig].gotsig) |
|
|
234 | { |
|
|
235 | signals [sig].gotsig = 0; |
|
|
236 | |
|
|
237 | for (w = signals [sig].head; w; w = w->next) |
|
|
238 | event ((struct ev_watcher *)w, EV_SIGNAL); |
|
|
239 | } |
396 | } |
240 | } |
397 | } |
241 | |
398 | |
242 | static void |
399 | void |
243 | siginit (void) |
400 | ev_feed_fd_event (EV_P_ int fd, int revents) |
244 | { |
401 | { |
245 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
402 | fd_event (EV_A_ fd, revents); |
246 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
247 | |
|
|
248 | /* rather than sort out wether we really need nb, set it */ |
|
|
249 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
|
|
250 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
251 | |
|
|
252 | evio_set (&sigev, sigpipe [0], EV_READ); |
|
|
253 | evio_start (&sigev); |
|
|
254 | } |
403 | } |
255 | |
404 | |
256 | #if HAVE_EPOLL |
405 | /*****************************************************************************/ |
257 | # include "ev_epoll.c" |
|
|
258 | #endif |
|
|
259 | #if HAVE_SELECT |
|
|
260 | # include "ev_select.c" |
|
|
261 | #endif |
|
|
262 | |
406 | |
263 | int ev_init (int flags) |
|
|
264 | { |
|
|
265 | #if HAVE_MONOTONIC |
|
|
266 | { |
|
|
267 | struct timespec ts; |
|
|
268 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
269 | have_monotonic = 1; |
|
|
270 | } |
|
|
271 | #endif |
|
|
272 | |
|
|
273 | ev_now = ev_time (); |
|
|
274 | now = get_clock (); |
|
|
275 | diff = ev_now - now; |
|
|
276 | |
|
|
277 | if (pipe (sigpipe)) |
|
|
278 | return 0; |
|
|
279 | |
|
|
280 | ev_method = EVMETHOD_NONE; |
|
|
281 | #if HAVE_EPOLL |
|
|
282 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
|
|
283 | #endif |
|
|
284 | #if HAVE_SELECT |
|
|
285 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
286 | #endif |
|
|
287 | |
|
|
288 | if (ev_method) |
|
|
289 | { |
|
|
290 | evw_init (&sigev, sigcb, 0); |
|
|
291 | siginit (); |
|
|
292 | } |
|
|
293 | |
|
|
294 | return ev_method; |
|
|
295 | } |
|
|
296 | |
|
|
297 | void ev_prefork (void) |
|
|
298 | { |
|
|
299 | } |
|
|
300 | |
|
|
301 | void ev_postfork_parent (void) |
|
|
302 | { |
|
|
303 | } |
|
|
304 | |
|
|
305 | void ev_postfork_child (void) |
|
|
306 | { |
|
|
307 | #if HAVE_EPOLL |
|
|
308 | if (ev_method == EVMETHOD_EPOLL) |
|
|
309 | epoll_postfork_child (); |
|
|
310 | #endif |
|
|
311 | |
|
|
312 | evio_stop (&sigev); |
|
|
313 | close (sigpipe [0]); |
|
|
314 | close (sigpipe [1]); |
|
|
315 | pipe (sigpipe); |
|
|
316 | siginit (); |
|
|
317 | } |
|
|
318 | |
|
|
319 | static void |
407 | static void |
320 | fd_reify (void) |
408 | fd_reify (EV_P) |
321 | { |
409 | { |
322 | int i; |
410 | int i; |
323 | |
411 | |
324 | for (i = 0; i < fdchangecnt; ++i) |
412 | for (i = 0; i < fdchangecnt; ++i) |
325 | { |
413 | { |
326 | int fd = fdchanges [i]; |
414 | int fd = fdchanges [i]; |
327 | ANFD *anfd = anfds + fd; |
415 | ANFD *anfd = anfds + fd; |
328 | struct ev_io *w; |
416 | struct ev_io *w; |
329 | |
417 | |
330 | int wev = 0; |
418 | int events = 0; |
331 | |
419 | |
332 | for (w = anfd->head; w; w = w->next) |
420 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
333 | wev |= w->events; |
421 | events |= w->events; |
334 | |
422 | |
335 | if (anfd->wev != wev) |
423 | #if EV_SELECT_IS_WINSOCKET |
|
|
424 | if (events) |
336 | { |
425 | { |
337 | method_modify (fd, anfd->wev, wev); |
426 | unsigned long argp; |
338 | anfd->wev = wev; |
427 | anfd->handle = _get_osfhandle (fd); |
|
|
428 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
339 | } |
429 | } |
|
|
430 | #endif |
|
|
431 | |
|
|
432 | anfd->reify = 0; |
|
|
433 | |
|
|
434 | method_modify (EV_A_ fd, anfd->events, events); |
|
|
435 | anfd->events = events; |
340 | } |
436 | } |
341 | |
437 | |
342 | fdchangecnt = 0; |
438 | fdchangecnt = 0; |
343 | } |
439 | } |
344 | |
440 | |
345 | static void |
441 | static void |
346 | call_pending () |
442 | fd_change (EV_P_ int fd) |
|
|
443 | { |
|
|
444 | if (anfds [fd].reify) |
|
|
445 | return; |
|
|
446 | |
|
|
447 | anfds [fd].reify = 1; |
|
|
448 | |
|
|
449 | ++fdchangecnt; |
|
|
450 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); |
|
|
451 | fdchanges [fdchangecnt - 1] = fd; |
|
|
452 | } |
|
|
453 | |
|
|
454 | static void |
|
|
455 | fd_kill (EV_P_ int fd) |
|
|
456 | { |
|
|
457 | struct ev_io *w; |
|
|
458 | |
|
|
459 | while ((w = (struct ev_io *)anfds [fd].head)) |
|
|
460 | { |
|
|
461 | ev_io_stop (EV_A_ w); |
|
|
462 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
463 | } |
|
|
464 | } |
|
|
465 | |
|
|
466 | static int |
|
|
467 | fd_valid (int fd) |
|
|
468 | { |
|
|
469 | #ifdef _WIN32 |
|
|
470 | return _get_osfhandle (fd) != -1; |
|
|
471 | #else |
|
|
472 | return fcntl (fd, F_GETFD) != -1; |
|
|
473 | #endif |
|
|
474 | } |
|
|
475 | |
|
|
476 | /* called on EBADF to verify fds */ |
|
|
477 | static void |
|
|
478 | fd_ebadf (EV_P) |
|
|
479 | { |
|
|
480 | int fd; |
|
|
481 | |
|
|
482 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
483 | if (anfds [fd].events) |
|
|
484 | if (!fd_valid (fd) == -1 && errno == EBADF) |
|
|
485 | fd_kill (EV_A_ fd); |
|
|
486 | } |
|
|
487 | |
|
|
488 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
489 | static void |
|
|
490 | fd_enomem (EV_P) |
|
|
491 | { |
|
|
492 | int fd; |
|
|
493 | |
|
|
494 | for (fd = anfdmax; fd--; ) |
|
|
495 | if (anfds [fd].events) |
|
|
496 | { |
|
|
497 | fd_kill (EV_A_ fd); |
|
|
498 | return; |
|
|
499 | } |
|
|
500 | } |
|
|
501 | |
|
|
502 | /* usually called after fork if method needs to re-arm all fds from scratch */ |
|
|
503 | static void |
|
|
504 | fd_rearm_all (EV_P) |
|
|
505 | { |
|
|
506 | int fd; |
|
|
507 | |
|
|
508 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
509 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
510 | if (anfds [fd].events) |
|
|
511 | { |
|
|
512 | anfds [fd].events = 0; |
|
|
513 | fd_change (EV_A_ fd); |
|
|
514 | } |
|
|
515 | } |
|
|
516 | |
|
|
517 | /*****************************************************************************/ |
|
|
518 | |
|
|
519 | static void |
|
|
520 | upheap (WT *heap, int k) |
|
|
521 | { |
|
|
522 | WT w = heap [k]; |
|
|
523 | |
|
|
524 | while (k && heap [k >> 1]->at > w->at) |
|
|
525 | { |
|
|
526 | heap [k] = heap [k >> 1]; |
|
|
527 | ((W)heap [k])->active = k + 1; |
|
|
528 | k >>= 1; |
|
|
529 | } |
|
|
530 | |
|
|
531 | heap [k] = w; |
|
|
532 | ((W)heap [k])->active = k + 1; |
|
|
533 | |
|
|
534 | } |
|
|
535 | |
|
|
536 | static void |
|
|
537 | downheap (WT *heap, int N, int k) |
|
|
538 | { |
|
|
539 | WT w = heap [k]; |
|
|
540 | |
|
|
541 | while (k < (N >> 1)) |
|
|
542 | { |
|
|
543 | int j = k << 1; |
|
|
544 | |
|
|
545 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
|
|
546 | ++j; |
|
|
547 | |
|
|
548 | if (w->at <= heap [j]->at) |
|
|
549 | break; |
|
|
550 | |
|
|
551 | heap [k] = heap [j]; |
|
|
552 | ((W)heap [k])->active = k + 1; |
|
|
553 | k = j; |
|
|
554 | } |
|
|
555 | |
|
|
556 | heap [k] = w; |
|
|
557 | ((W)heap [k])->active = k + 1; |
|
|
558 | } |
|
|
559 | |
|
|
560 | inline void |
|
|
561 | adjustheap (WT *heap, int N, int k) |
|
|
562 | { |
|
|
563 | upheap (heap, k); |
|
|
564 | downheap (heap, N, k); |
|
|
565 | } |
|
|
566 | |
|
|
567 | /*****************************************************************************/ |
|
|
568 | |
|
|
569 | typedef struct |
|
|
570 | { |
|
|
571 | WL head; |
|
|
572 | sig_atomic_t volatile gotsig; |
|
|
573 | } ANSIG; |
|
|
574 | |
|
|
575 | static ANSIG *signals; |
|
|
576 | static int signalmax; |
|
|
577 | |
|
|
578 | static int sigpipe [2]; |
|
|
579 | static sig_atomic_t volatile gotsig; |
|
|
580 | static struct ev_io sigev; |
|
|
581 | |
|
|
582 | static void |
|
|
583 | signals_init (ANSIG *base, int count) |
|
|
584 | { |
|
|
585 | while (count--) |
|
|
586 | { |
|
|
587 | base->head = 0; |
|
|
588 | base->gotsig = 0; |
|
|
589 | |
|
|
590 | ++base; |
|
|
591 | } |
|
|
592 | } |
|
|
593 | |
|
|
594 | static void |
|
|
595 | sighandler (int signum) |
|
|
596 | { |
|
|
597 | #if _WIN32 |
|
|
598 | signal (signum, sighandler); |
|
|
599 | #endif |
|
|
600 | |
|
|
601 | signals [signum - 1].gotsig = 1; |
|
|
602 | |
|
|
603 | if (!gotsig) |
|
|
604 | { |
|
|
605 | int old_errno = errno; |
|
|
606 | gotsig = 1; |
|
|
607 | write (sigpipe [1], &signum, 1); |
|
|
608 | errno = old_errno; |
|
|
609 | } |
|
|
610 | } |
|
|
611 | |
|
|
612 | void |
|
|
613 | ev_feed_signal_event (EV_P_ int signum) |
|
|
614 | { |
|
|
615 | WL w; |
|
|
616 | |
|
|
617 | #if EV_MULTIPLICITY |
|
|
618 | assert (("feeding signal events is only supported in the default loop", loop == default_loop)); |
|
|
619 | #endif |
|
|
620 | |
|
|
621 | --signum; |
|
|
622 | |
|
|
623 | if (signum < 0 || signum >= signalmax) |
|
|
624 | return; |
|
|
625 | |
|
|
626 | signals [signum].gotsig = 0; |
|
|
627 | |
|
|
628 | for (w = signals [signum].head; w; w = w->next) |
|
|
629 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
630 | } |
|
|
631 | |
|
|
632 | static void |
|
|
633 | sigcb (EV_P_ struct ev_io *iow, int revents) |
|
|
634 | { |
|
|
635 | int signum; |
|
|
636 | |
|
|
637 | read (sigpipe [0], &revents, 1); |
|
|
638 | gotsig = 0; |
|
|
639 | |
|
|
640 | for (signum = signalmax; signum--; ) |
|
|
641 | if (signals [signum].gotsig) |
|
|
642 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
643 | } |
|
|
644 | |
|
|
645 | inline void |
|
|
646 | fd_intern (int fd) |
|
|
647 | { |
|
|
648 | #ifdef _WIN32 |
|
|
649 | int arg = 1; |
|
|
650 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
651 | #else |
|
|
652 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
653 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
654 | #endif |
|
|
655 | } |
|
|
656 | |
|
|
657 | static void |
|
|
658 | siginit (EV_P) |
|
|
659 | { |
|
|
660 | fd_intern (sigpipe [0]); |
|
|
661 | fd_intern (sigpipe [1]); |
|
|
662 | |
|
|
663 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
664 | ev_io_start (EV_A_ &sigev); |
|
|
665 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
666 | } |
|
|
667 | |
|
|
668 | /*****************************************************************************/ |
|
|
669 | |
|
|
670 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
671 | |
|
|
672 | #ifndef _WIN32 |
|
|
673 | |
|
|
674 | static struct ev_signal childev; |
|
|
675 | |
|
|
676 | #ifndef WCONTINUED |
|
|
677 | # define WCONTINUED 0 |
|
|
678 | #endif |
|
|
679 | |
|
|
680 | static void |
|
|
681 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
|
|
682 | { |
|
|
683 | struct ev_child *w; |
|
|
684 | |
|
|
685 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
686 | if (w->pid == pid || !w->pid) |
|
|
687 | { |
|
|
688 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
|
|
689 | w->rpid = pid; |
|
|
690 | w->rstatus = status; |
|
|
691 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
692 | } |
|
|
693 | } |
|
|
694 | |
|
|
695 | static void |
|
|
696 | childcb (EV_P_ struct ev_signal *sw, int revents) |
|
|
697 | { |
|
|
698 | int pid, status; |
|
|
699 | |
|
|
700 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
|
|
701 | { |
|
|
702 | /* make sure we are called again until all childs have been reaped */ |
|
|
703 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
704 | |
|
|
705 | child_reap (EV_A_ sw, pid, pid, status); |
|
|
706 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
|
|
707 | } |
|
|
708 | } |
|
|
709 | |
|
|
710 | #endif |
|
|
711 | |
|
|
712 | /*****************************************************************************/ |
|
|
713 | |
|
|
714 | #if EV_USE_KQUEUE |
|
|
715 | # include "ev_kqueue.c" |
|
|
716 | #endif |
|
|
717 | #if EV_USE_EPOLL |
|
|
718 | # include "ev_epoll.c" |
|
|
719 | #endif |
|
|
720 | #if EV_USE_POLL |
|
|
721 | # include "ev_poll.c" |
|
|
722 | #endif |
|
|
723 | #if EV_USE_SELECT |
|
|
724 | # include "ev_select.c" |
|
|
725 | #endif |
|
|
726 | |
|
|
727 | int |
|
|
728 | ev_version_major (void) |
|
|
729 | { |
|
|
730 | return EV_VERSION_MAJOR; |
|
|
731 | } |
|
|
732 | |
|
|
733 | int |
|
|
734 | ev_version_minor (void) |
|
|
735 | { |
|
|
736 | return EV_VERSION_MINOR; |
|
|
737 | } |
|
|
738 | |
|
|
739 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
740 | static int |
|
|
741 | enable_secure (void) |
|
|
742 | { |
|
|
743 | #ifdef _WIN32 |
|
|
744 | return 0; |
|
|
745 | #else |
|
|
746 | return getuid () != geteuid () |
|
|
747 | || getgid () != getegid (); |
|
|
748 | #endif |
|
|
749 | } |
|
|
750 | |
|
|
751 | int |
|
|
752 | ev_method (EV_P) |
|
|
753 | { |
|
|
754 | return method; |
|
|
755 | } |
|
|
756 | |
|
|
757 | static void |
|
|
758 | loop_init (EV_P_ int methods) |
|
|
759 | { |
|
|
760 | if (!method) |
|
|
761 | { |
|
|
762 | #if EV_USE_MONOTONIC |
|
|
763 | { |
|
|
764 | struct timespec ts; |
|
|
765 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
766 | have_monotonic = 1; |
|
|
767 | } |
|
|
768 | #endif |
|
|
769 | |
|
|
770 | ev_rt_now = ev_time (); |
|
|
771 | mn_now = get_clock (); |
|
|
772 | now_floor = mn_now; |
|
|
773 | rtmn_diff = ev_rt_now - mn_now; |
|
|
774 | |
|
|
775 | if (methods == EVMETHOD_AUTO) |
|
|
776 | if (!enable_secure () && getenv ("LIBEV_METHODS")) |
|
|
777 | methods = atoi (getenv ("LIBEV_METHODS")); |
|
|
778 | else |
|
|
779 | methods = EVMETHOD_ANY; |
|
|
780 | |
|
|
781 | method = 0; |
|
|
782 | #if EV_USE_KQUEUE |
|
|
783 | if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); |
|
|
784 | #endif |
|
|
785 | #if EV_USE_EPOLL |
|
|
786 | if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); |
|
|
787 | #endif |
|
|
788 | #if EV_USE_POLL |
|
|
789 | if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); |
|
|
790 | #endif |
|
|
791 | #if EV_USE_SELECT |
|
|
792 | if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); |
|
|
793 | #endif |
|
|
794 | |
|
|
795 | ev_init (&sigev, sigcb); |
|
|
796 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
797 | } |
|
|
798 | } |
|
|
799 | |
|
|
800 | void |
|
|
801 | loop_destroy (EV_P) |
347 | { |
802 | { |
348 | int i; |
803 | int i; |
349 | |
804 | |
350 | for (i = 0; i < pendingcnt; ++i) |
805 | #if EV_USE_KQUEUE |
|
|
806 | if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); |
|
|
807 | #endif |
|
|
808 | #if EV_USE_EPOLL |
|
|
809 | if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); |
|
|
810 | #endif |
|
|
811 | #if EV_USE_POLL |
|
|
812 | if (method == EVMETHOD_POLL ) poll_destroy (EV_A); |
|
|
813 | #endif |
|
|
814 | #if EV_USE_SELECT |
|
|
815 | if (method == EVMETHOD_SELECT) select_destroy (EV_A); |
|
|
816 | #endif |
|
|
817 | |
|
|
818 | for (i = NUMPRI; i--; ) |
|
|
819 | array_free (pending, [i]); |
|
|
820 | |
|
|
821 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
822 | array_free (fdchange, EMPTY); |
|
|
823 | array_free (timer, EMPTY); |
|
|
824 | #if EV_PERIODICS |
|
|
825 | array_free (periodic, EMPTY); |
|
|
826 | #endif |
|
|
827 | array_free (idle, EMPTY); |
|
|
828 | array_free (prepare, EMPTY); |
|
|
829 | array_free (check, EMPTY); |
|
|
830 | |
|
|
831 | method = 0; |
|
|
832 | } |
|
|
833 | |
|
|
834 | static void |
|
|
835 | loop_fork (EV_P) |
|
|
836 | { |
|
|
837 | #if EV_USE_EPOLL |
|
|
838 | if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); |
|
|
839 | #endif |
|
|
840 | #if EV_USE_KQUEUE |
|
|
841 | if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); |
|
|
842 | #endif |
|
|
843 | |
|
|
844 | if (ev_is_active (&sigev)) |
|
|
845 | { |
|
|
846 | /* default loop */ |
|
|
847 | |
|
|
848 | ev_ref (EV_A); |
|
|
849 | ev_io_stop (EV_A_ &sigev); |
|
|
850 | close (sigpipe [0]); |
|
|
851 | close (sigpipe [1]); |
|
|
852 | |
|
|
853 | while (pipe (sigpipe)) |
|
|
854 | syserr ("(libev) error creating pipe"); |
|
|
855 | |
|
|
856 | siginit (EV_A); |
351 | { |
857 | } |
352 | ANPENDING *p = pendings + i; |
|
|
353 | |
858 | |
354 | if (p->w) |
859 | postfork = 0; |
|
|
860 | } |
|
|
861 | |
|
|
862 | #if EV_MULTIPLICITY |
|
|
863 | struct ev_loop * |
|
|
864 | ev_loop_new (int methods) |
|
|
865 | { |
|
|
866 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
867 | |
|
|
868 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
869 | |
|
|
870 | loop_init (EV_A_ methods); |
|
|
871 | |
|
|
872 | if (ev_method (EV_A)) |
|
|
873 | return loop; |
|
|
874 | |
|
|
875 | return 0; |
|
|
876 | } |
|
|
877 | |
|
|
878 | void |
|
|
879 | ev_loop_destroy (EV_P) |
|
|
880 | { |
|
|
881 | loop_destroy (EV_A); |
|
|
882 | ev_free (loop); |
|
|
883 | } |
|
|
884 | |
|
|
885 | void |
|
|
886 | ev_loop_fork (EV_P) |
|
|
887 | { |
|
|
888 | postfork = 1; |
|
|
889 | } |
|
|
890 | |
|
|
891 | #endif |
|
|
892 | |
|
|
893 | #if EV_MULTIPLICITY |
|
|
894 | struct ev_loop * |
|
|
895 | #else |
|
|
896 | int |
|
|
897 | #endif |
|
|
898 | ev_default_loop (int methods) |
|
|
899 | { |
|
|
900 | if (sigpipe [0] == sigpipe [1]) |
|
|
901 | if (pipe (sigpipe)) |
|
|
902 | return 0; |
|
|
903 | |
|
|
904 | if (!default_loop) |
|
|
905 | { |
|
|
906 | #if EV_MULTIPLICITY |
|
|
907 | struct ev_loop *loop = default_loop = &default_loop_struct; |
|
|
908 | #else |
|
|
909 | default_loop = 1; |
|
|
910 | #endif |
|
|
911 | |
|
|
912 | loop_init (EV_A_ methods); |
|
|
913 | |
|
|
914 | if (ev_method (EV_A)) |
355 | { |
915 | { |
356 | p->w->pending = 0; |
916 | siginit (EV_A); |
357 | p->w->cb (p->w, p->events); |
917 | |
|
|
918 | #ifndef _WIN32 |
|
|
919 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
920 | ev_set_priority (&childev, EV_MAXPRI); |
|
|
921 | ev_signal_start (EV_A_ &childev); |
|
|
922 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
923 | #endif |
358 | } |
924 | } |
|
|
925 | else |
|
|
926 | default_loop = 0; |
|
|
927 | } |
|
|
928 | |
|
|
929 | return default_loop; |
|
|
930 | } |
|
|
931 | |
|
|
932 | void |
|
|
933 | ev_default_destroy (void) |
|
|
934 | { |
|
|
935 | #if EV_MULTIPLICITY |
|
|
936 | struct ev_loop *loop = default_loop; |
|
|
937 | #endif |
|
|
938 | |
|
|
939 | #ifndef _WIN32 |
|
|
940 | ev_ref (EV_A); /* child watcher */ |
|
|
941 | ev_signal_stop (EV_A_ &childev); |
|
|
942 | #endif |
|
|
943 | |
|
|
944 | ev_ref (EV_A); /* signal watcher */ |
|
|
945 | ev_io_stop (EV_A_ &sigev); |
|
|
946 | |
|
|
947 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
948 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
949 | |
|
|
950 | loop_destroy (EV_A); |
|
|
951 | } |
|
|
952 | |
|
|
953 | void |
|
|
954 | ev_default_fork (void) |
|
|
955 | { |
|
|
956 | #if EV_MULTIPLICITY |
|
|
957 | struct ev_loop *loop = default_loop; |
|
|
958 | #endif |
|
|
959 | |
|
|
960 | if (method) |
|
|
961 | postfork = 1; |
|
|
962 | } |
|
|
963 | |
|
|
964 | /*****************************************************************************/ |
|
|
965 | |
|
|
966 | static int |
|
|
967 | any_pending (EV_P) |
|
|
968 | { |
|
|
969 | int pri; |
|
|
970 | |
|
|
971 | for (pri = NUMPRI; pri--; ) |
|
|
972 | if (pendingcnt [pri]) |
|
|
973 | return 1; |
|
|
974 | |
|
|
975 | return 0; |
|
|
976 | } |
|
|
977 | |
|
|
978 | static void |
|
|
979 | call_pending (EV_P) |
|
|
980 | { |
|
|
981 | int pri; |
|
|
982 | |
|
|
983 | for (pri = NUMPRI; pri--; ) |
|
|
984 | while (pendingcnt [pri]) |
|
|
985 | { |
|
|
986 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
|
|
987 | |
|
|
988 | if (p->w) |
|
|
989 | { |
|
|
990 | p->w->pending = 0; |
|
|
991 | EV_CB_INVOKE (p->w, p->events); |
|
|
992 | } |
359 | } |
993 | } |
360 | |
|
|
361 | pendingcnt = 0; |
|
|
362 | } |
994 | } |
363 | |
995 | |
364 | static void |
996 | static void |
365 | timers_reify (struct ev_timer **timers, int timercnt, ev_tstamp now) |
997 | timers_reify (EV_P) |
366 | { |
998 | { |
367 | while (timercnt && timers [0]->at <= now) |
999 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
368 | { |
1000 | { |
369 | struct ev_timer *w = timers [0]; |
1001 | struct ev_timer *w = timers [0]; |
|
|
1002 | |
|
|
1003 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
370 | |
1004 | |
371 | /* first reschedule or stop timer */ |
1005 | /* first reschedule or stop timer */ |
372 | if (w->repeat) |
1006 | if (w->repeat) |
373 | { |
1007 | { |
374 | if (w->is_abs) |
1008 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
375 | w->at += floor ((now - w->at) / w->repeat + 1.) * w->repeat; |
1009 | |
376 | else |
|
|
377 | w->at = now + w->repeat; |
1010 | ((WT)w)->at += w->repeat; |
|
|
1011 | if (((WT)w)->at < mn_now) |
|
|
1012 | ((WT)w)->at = mn_now; |
378 | |
1013 | |
379 | assert (w->at > now); |
|
|
380 | |
|
|
381 | downheap (timers, timercnt, 0); |
1014 | downheap ((WT *)timers, timercnt, 0); |
382 | } |
1015 | } |
383 | else |
1016 | else |
|
|
1017 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1018 | |
|
|
1019 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
1020 | } |
|
|
1021 | } |
|
|
1022 | |
|
|
1023 | #if EV_PERIODICS |
|
|
1024 | static void |
|
|
1025 | periodics_reify (EV_P) |
|
|
1026 | { |
|
|
1027 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
|
|
1028 | { |
|
|
1029 | struct ev_periodic *w = periodics [0]; |
|
|
1030 | |
|
|
1031 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
|
|
1032 | |
|
|
1033 | /* first reschedule or stop timer */ |
|
|
1034 | if (w->reschedule_cb) |
384 | { |
1035 | { |
385 | evtimer_stop (w); /* nonrepeating: stop timer */ |
1036 | ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); |
386 | --timercnt; /* maybe pass by reference instead? */ |
1037 | |
|
|
1038 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
|
|
1039 | downheap ((WT *)periodics, periodiccnt, 0); |
387 | } |
1040 | } |
|
|
1041 | else if (w->interval) |
|
|
1042 | { |
|
|
1043 | ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
|
|
1044 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
|
|
1045 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1046 | } |
|
|
1047 | else |
|
|
1048 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
388 | |
1049 | |
389 | event ((struct ev_watcher *)w, EV_TIMEOUT); |
1050 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
390 | } |
1051 | } |
391 | } |
1052 | } |
392 | |
1053 | |
393 | static void |
1054 | static void |
394 | time_update () |
1055 | periodics_reschedule (EV_P) |
395 | { |
1056 | { |
396 | int i; |
1057 | int i; |
|
|
1058 | |
|
|
1059 | /* adjust periodics after time jump */ |
|
|
1060 | for (i = 0; i < periodiccnt; ++i) |
|
|
1061 | { |
|
|
1062 | struct ev_periodic *w = periodics [i]; |
|
|
1063 | |
|
|
1064 | if (w->reschedule_cb) |
|
|
1065 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1066 | else if (w->interval) |
|
|
1067 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1068 | } |
|
|
1069 | |
|
|
1070 | /* now rebuild the heap */ |
|
|
1071 | for (i = periodiccnt >> 1; i--; ) |
|
|
1072 | downheap ((WT *)periodics, periodiccnt, i); |
|
|
1073 | } |
|
|
1074 | #endif |
|
|
1075 | |
|
|
1076 | inline int |
|
|
1077 | time_update_monotonic (EV_P) |
|
|
1078 | { |
|
|
1079 | mn_now = get_clock (); |
|
|
1080 | |
|
|
1081 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
1082 | { |
|
|
1083 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1084 | return 0; |
|
|
1085 | } |
|
|
1086 | else |
|
|
1087 | { |
|
|
1088 | now_floor = mn_now; |
397 | ev_now = ev_time (); |
1089 | ev_rt_now = ev_time (); |
398 | |
1090 | return 1; |
399 | if (have_monotonic) |
|
|
400 | { |
1091 | } |
401 | ev_tstamp odiff = diff; |
1092 | } |
402 | |
1093 | |
403 | /* detecting time jumps is much more difficult */ |
1094 | static void |
404 | for (i = 2; --i; ) /* loop a few times, before making important decisions */ |
1095 | time_update (EV_P) |
|
|
1096 | { |
|
|
1097 | int i; |
|
|
1098 | |
|
|
1099 | #if EV_USE_MONOTONIC |
|
|
1100 | if (expect_true (have_monotonic)) |
|
|
1101 | { |
|
|
1102 | if (time_update_monotonic (EV_A)) |
405 | { |
1103 | { |
406 | now = get_clock (); |
1104 | ev_tstamp odiff = rtmn_diff; |
|
|
1105 | |
|
|
1106 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
1107 | { |
407 | diff = ev_now - now; |
1108 | rtmn_diff = ev_rt_now - mn_now; |
408 | |
1109 | |
409 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
1110 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
410 | return; /* all is well */ |
1111 | return; /* all is well */ |
411 | |
1112 | |
412 | ev_now = ev_time (); |
1113 | ev_rt_now = ev_time (); |
|
|
1114 | mn_now = get_clock (); |
|
|
1115 | now_floor = mn_now; |
|
|
1116 | } |
|
|
1117 | |
|
|
1118 | # if EV_PERIODICS |
|
|
1119 | periodics_reschedule (EV_A); |
|
|
1120 | # endif |
|
|
1121 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1122 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
413 | } |
1123 | } |
|
|
1124 | } |
|
|
1125 | else |
|
|
1126 | #endif |
|
|
1127 | { |
|
|
1128 | ev_rt_now = ev_time (); |
414 | |
1129 | |
415 | /* time jump detected, reschedule atimers */ |
1130 | if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
416 | for (i = 0; i < atimercnt; ++i) |
|
|
417 | { |
1131 | { |
418 | struct ev_timer *w = atimers [i]; |
1132 | #if EV_PERIODICS |
419 | w->at += ceil ((ev_now - w->at) / w->repeat + 1.) * w->repeat; |
1133 | periodics_reschedule (EV_A); |
|
|
1134 | #endif |
|
|
1135 | |
|
|
1136 | /* adjust timers. this is easy, as the offset is the same for all */ |
|
|
1137 | for (i = 0; i < timercnt; ++i) |
|
|
1138 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
420 | } |
1139 | } |
421 | } |
|
|
422 | else |
|
|
423 | { |
|
|
424 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
|
|
425 | /* time jump detected, adjust rtimers */ |
|
|
426 | for (i = 0; i < rtimercnt; ++i) |
|
|
427 | rtimers [i]->at += ev_now - now; |
|
|
428 | |
1140 | |
429 | now = ev_now; |
1141 | mn_now = ev_rt_now; |
430 | } |
1142 | } |
431 | } |
1143 | } |
432 | |
1144 | |
433 | int ev_loop_done; |
1145 | void |
|
|
1146 | ev_ref (EV_P) |
|
|
1147 | { |
|
|
1148 | ++activecnt; |
|
|
1149 | } |
434 | |
1150 | |
|
|
1151 | void |
|
|
1152 | ev_unref (EV_P) |
|
|
1153 | { |
|
|
1154 | --activecnt; |
|
|
1155 | } |
|
|
1156 | |
|
|
1157 | static int loop_done; |
|
|
1158 | |
|
|
1159 | void |
435 | void ev_loop (int flags) |
1160 | ev_loop (EV_P_ int flags) |
436 | { |
1161 | { |
437 | double block; |
1162 | double block; |
438 | ev_loop_done = flags & EVLOOP_ONESHOT; |
1163 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
439 | |
1164 | |
440 | do |
1165 | do |
441 | { |
1166 | { |
|
|
1167 | /* queue check watchers (and execute them) */ |
|
|
1168 | if (expect_false (preparecnt)) |
|
|
1169 | { |
|
|
1170 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
|
|
1171 | call_pending (EV_A); |
|
|
1172 | } |
|
|
1173 | |
|
|
1174 | /* we might have forked, so reify kernel state if necessary */ |
|
|
1175 | if (expect_false (postfork)) |
|
|
1176 | loop_fork (EV_A); |
|
|
1177 | |
442 | /* update fd-related kernel structures */ |
1178 | /* update fd-related kernel structures */ |
443 | fd_reify (); |
1179 | fd_reify (EV_A); |
444 | |
1180 | |
445 | /* calculate blocking time */ |
1181 | /* calculate blocking time */ |
|
|
1182 | |
|
|
1183 | /* we only need this for !monotonic clock or timers, but as we basically |
|
|
1184 | always have timers, we just calculate it always */ |
|
|
1185 | #if EV_USE_MONOTONIC |
|
|
1186 | if (expect_true (have_monotonic)) |
|
|
1187 | time_update_monotonic (EV_A); |
|
|
1188 | else |
|
|
1189 | #endif |
|
|
1190 | { |
|
|
1191 | ev_rt_now = ev_time (); |
|
|
1192 | mn_now = ev_rt_now; |
|
|
1193 | } |
|
|
1194 | |
446 | if (flags & EVLOOP_NONBLOCK) |
1195 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
447 | block = 0.; |
1196 | block = 0.; |
448 | else |
1197 | else |
449 | { |
1198 | { |
450 | block = MAX_BLOCKTIME; |
1199 | block = MAX_BLOCKTIME; |
451 | |
1200 | |
452 | if (rtimercnt) |
1201 | if (timercnt) |
453 | { |
1202 | { |
454 | ev_tstamp to = rtimers [0]->at - get_clock () + method_fudge; |
1203 | ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; |
455 | if (block > to) block = to; |
1204 | if (block > to) block = to; |
456 | } |
1205 | } |
457 | |
1206 | |
|
|
1207 | #if EV_PERIODICS |
458 | if (atimercnt) |
1208 | if (periodiccnt) |
459 | { |
1209 | { |
460 | ev_tstamp to = atimers [0]->at - ev_time () + method_fudge; |
1210 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; |
461 | if (block > to) block = to; |
1211 | if (block > to) block = to; |
462 | } |
1212 | } |
|
|
1213 | #endif |
463 | |
1214 | |
464 | if (block < 0.) block = 0.; |
1215 | if (block < 0.) block = 0.; |
465 | } |
1216 | } |
466 | |
1217 | |
467 | method_poll (block); |
1218 | method_poll (EV_A_ block); |
468 | |
1219 | |
469 | /* update ev_now, do magic */ |
1220 | /* update ev_rt_now, do magic */ |
470 | time_update (); |
1221 | time_update (EV_A); |
471 | |
1222 | |
472 | /* put pending timers into pendign queue and reschedule them */ |
1223 | /* queue pending timers and reschedule them */ |
473 | /* absolute timers first */ |
1224 | timers_reify (EV_A); /* relative timers called last */ |
474 | timers_reify (atimers, atimercnt, ev_now); |
1225 | #if EV_PERIODICS |
475 | /* relative timers second */ |
1226 | periodics_reify (EV_A); /* absolute timers called first */ |
476 | timers_reify (rtimers, rtimercnt, now); |
1227 | #endif |
477 | |
1228 | |
|
|
1229 | /* queue idle watchers unless io or timers are pending */ |
|
|
1230 | if (idlecnt && !any_pending (EV_A)) |
|
|
1231 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
|
|
1232 | |
|
|
1233 | /* queue check watchers, to be executed first */ |
|
|
1234 | if (checkcnt) |
|
|
1235 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
|
|
1236 | |
478 | call_pending (); |
1237 | call_pending (EV_A); |
479 | } |
1238 | } |
480 | while (!ev_loop_done); |
1239 | while (activecnt && !loop_done); |
481 | } |
|
|
482 | |
1240 | |
483 | static void |
1241 | if (loop_done != 2) |
484 | wlist_add (struct ev_watcher_list **head, struct ev_watcher_list *elem) |
1242 | loop_done = 0; |
|
|
1243 | } |
|
|
1244 | |
|
|
1245 | void |
|
|
1246 | ev_unloop (EV_P_ int how) |
|
|
1247 | { |
|
|
1248 | loop_done = how; |
|
|
1249 | } |
|
|
1250 | |
|
|
1251 | /*****************************************************************************/ |
|
|
1252 | |
|
|
1253 | inline void |
|
|
1254 | wlist_add (WL *head, WL elem) |
485 | { |
1255 | { |
486 | elem->next = *head; |
1256 | elem->next = *head; |
487 | *head = elem; |
1257 | *head = elem; |
488 | } |
1258 | } |
489 | |
1259 | |
490 | static void |
1260 | inline void |
491 | wlist_del (struct ev_watcher_list **head, struct ev_watcher_list *elem) |
1261 | wlist_del (WL *head, WL elem) |
492 | { |
1262 | { |
493 | while (*head) |
1263 | while (*head) |
494 | { |
1264 | { |
495 | if (*head == elem) |
1265 | if (*head == elem) |
496 | { |
1266 | { |
… | |
… | |
500 | |
1270 | |
501 | head = &(*head)->next; |
1271 | head = &(*head)->next; |
502 | } |
1272 | } |
503 | } |
1273 | } |
504 | |
1274 | |
505 | static void |
1275 | inline void |
506 | ev_start (struct ev_watcher *w, int active) |
1276 | ev_clear_pending (EV_P_ W w) |
507 | { |
1277 | { |
|
|
1278 | if (w->pending) |
|
|
1279 | { |
|
|
1280 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
508 | w->pending = 0; |
1281 | w->pending = 0; |
|
|
1282 | } |
|
|
1283 | } |
|
|
1284 | |
|
|
1285 | inline void |
|
|
1286 | ev_start (EV_P_ W w, int active) |
|
|
1287 | { |
|
|
1288 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1289 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1290 | |
509 | w->active = active; |
1291 | w->active = active; |
|
|
1292 | ev_ref (EV_A); |
510 | } |
1293 | } |
511 | |
1294 | |
512 | static void |
1295 | inline void |
513 | ev_stop (struct ev_watcher *w) |
1296 | ev_stop (EV_P_ W w) |
514 | { |
1297 | { |
515 | if (w->pending) |
1298 | ev_unref (EV_A); |
516 | pendings [w->pending - 1].w = 0; |
|
|
517 | |
|
|
518 | w->active = 0; |
1299 | w->active = 0; |
519 | /* nop */ |
|
|
520 | } |
1300 | } |
521 | |
1301 | |
|
|
1302 | /*****************************************************************************/ |
|
|
1303 | |
522 | void |
1304 | void |
523 | evio_start (struct ev_io *w) |
1305 | ev_io_start (EV_P_ struct ev_io *w) |
524 | { |
1306 | { |
|
|
1307 | int fd = w->fd; |
|
|
1308 | |
525 | if (ev_is_active (w)) |
1309 | if (ev_is_active (w)) |
526 | return; |
1310 | return; |
527 | |
1311 | |
528 | int fd = w->fd; |
1312 | assert (("ev_io_start called with negative fd", fd >= 0)); |
529 | |
1313 | |
530 | ev_start ((struct ev_watcher *)w, 1); |
1314 | ev_start (EV_A_ (W)w, 1); |
531 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1315 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
532 | wlist_add ((struct ev_watcher_list **)&anfds[fd].head, (struct ev_watcher_list *)w); |
1316 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
533 | |
1317 | |
534 | ++fdchangecnt; |
1318 | fd_change (EV_A_ fd); |
535 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
536 | fdchanges [fdchangecnt - 1] = fd; |
|
|
537 | } |
1319 | } |
538 | |
1320 | |
539 | void |
1321 | void |
540 | evio_stop (struct ev_io *w) |
1322 | ev_io_stop (EV_P_ struct ev_io *w) |
541 | { |
1323 | { |
|
|
1324 | ev_clear_pending (EV_A_ (W)w); |
542 | if (!ev_is_active (w)) |
1325 | if (!ev_is_active (w)) |
543 | return; |
1326 | return; |
544 | |
1327 | |
545 | wlist_del ((struct ev_watcher_list **)&anfds[w->fd].head, (struct ev_watcher_list *)w); |
1328 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
546 | ev_stop ((struct ev_watcher *)w); |
|
|
547 | |
1329 | |
548 | ++fdchangecnt; |
1330 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
549 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
1331 | ev_stop (EV_A_ (W)w); |
550 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
551 | } |
|
|
552 | |
1332 | |
|
|
1333 | fd_change (EV_A_ w->fd); |
|
|
1334 | } |
|
|
1335 | |
553 | void |
1336 | void |
554 | evtimer_start (struct ev_timer *w) |
1337 | ev_timer_start (EV_P_ struct ev_timer *w) |
555 | { |
1338 | { |
556 | if (ev_is_active (w)) |
1339 | if (ev_is_active (w)) |
557 | return; |
1340 | return; |
558 | |
1341 | |
559 | if (w->is_abs) |
1342 | ((WT)w)->at += mn_now; |
|
|
1343 | |
|
|
1344 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
|
|
1345 | |
|
|
1346 | ev_start (EV_A_ (W)w, ++timercnt); |
|
|
1347 | array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); |
|
|
1348 | timers [timercnt - 1] = w; |
|
|
1349 | upheap ((WT *)timers, timercnt - 1); |
|
|
1350 | |
|
|
1351 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1352 | } |
|
|
1353 | |
|
|
1354 | void |
|
|
1355 | ev_timer_stop (EV_P_ struct ev_timer *w) |
|
|
1356 | { |
|
|
1357 | ev_clear_pending (EV_A_ (W)w); |
|
|
1358 | if (!ev_is_active (w)) |
|
|
1359 | return; |
|
|
1360 | |
|
|
1361 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1362 | |
|
|
1363 | if (((W)w)->active < timercnt--) |
|
|
1364 | { |
|
|
1365 | timers [((W)w)->active - 1] = timers [timercnt]; |
|
|
1366 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
560 | { |
1367 | } |
561 | /* this formula differs from the one in timer_reify becuse we do not round up */ |
1368 | |
|
|
1369 | ((WT)w)->at -= mn_now; |
|
|
1370 | |
|
|
1371 | ev_stop (EV_A_ (W)w); |
|
|
1372 | } |
|
|
1373 | |
|
|
1374 | void |
|
|
1375 | ev_timer_again (EV_P_ struct ev_timer *w) |
|
|
1376 | { |
|
|
1377 | if (ev_is_active (w)) |
|
|
1378 | { |
562 | if (w->repeat) |
1379 | if (w->repeat) |
563 | w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat; |
1380 | { |
564 | |
1381 | ((WT)w)->at = mn_now + w->repeat; |
565 | ev_start ((struct ev_watcher *)w, ++atimercnt); |
1382 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
566 | array_needsize (atimers, atimermax, atimercnt, ); |
1383 | } |
567 | atimers [atimercnt - 1] = w; |
|
|
568 | upheap (atimers, atimercnt - 1); |
|
|
569 | } |
|
|
570 | else |
1384 | else |
|
|
1385 | ev_timer_stop (EV_A_ w); |
571 | { |
1386 | } |
572 | w->at += now; |
1387 | else if (w->repeat) |
|
|
1388 | ev_timer_start (EV_A_ w); |
|
|
1389 | } |
573 | |
1390 | |
574 | ev_start ((struct ev_watcher *)w, ++rtimercnt); |
1391 | #if EV_PERIODICS |
575 | array_needsize (rtimers, rtimermax, rtimercnt, ); |
1392 | void |
576 | rtimers [rtimercnt - 1] = w; |
1393 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
577 | upheap (rtimers, rtimercnt - 1); |
1394 | { |
|
|
1395 | if (ev_is_active (w)) |
|
|
1396 | return; |
|
|
1397 | |
|
|
1398 | if (w->reschedule_cb) |
|
|
1399 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1400 | else if (w->interval) |
578 | } |
1401 | { |
|
|
1402 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
|
|
1403 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
|
|
1404 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1405 | } |
579 | |
1406 | |
580 | } |
1407 | ev_start (EV_A_ (W)w, ++periodiccnt); |
|
|
1408 | array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); |
|
|
1409 | periodics [periodiccnt - 1] = w; |
|
|
1410 | upheap ((WT *)periodics, periodiccnt - 1); |
581 | |
1411 | |
|
|
1412 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1413 | } |
|
|
1414 | |
582 | void |
1415 | void |
583 | evtimer_stop (struct ev_timer *w) |
1416 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
584 | { |
1417 | { |
|
|
1418 | ev_clear_pending (EV_A_ (W)w); |
585 | if (!ev_is_active (w)) |
1419 | if (!ev_is_active (w)) |
586 | return; |
1420 | return; |
587 | |
1421 | |
588 | if (w->is_abs) |
1422 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
589 | { |
1423 | |
590 | if (w->active < atimercnt--) |
1424 | if (((W)w)->active < periodiccnt--) |
591 | { |
|
|
592 | atimers [w->active - 1] = atimers [atimercnt]; |
|
|
593 | downheap (atimers, atimercnt, w->active - 1); |
|
|
594 | } |
|
|
595 | } |
1425 | { |
596 | else |
1426 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
|
|
1427 | adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
597 | { |
1428 | } |
598 | if (w->active < rtimercnt--) |
|
|
599 | { |
|
|
600 | rtimers [w->active - 1] = rtimers [rtimercnt]; |
|
|
601 | downheap (rtimers, rtimercnt, w->active - 1); |
|
|
602 | } |
|
|
603 | } |
|
|
604 | |
1429 | |
605 | ev_stop ((struct ev_watcher *)w); |
1430 | ev_stop (EV_A_ (W)w); |
606 | } |
1431 | } |
607 | |
1432 | |
608 | void |
1433 | void |
609 | evsignal_start (struct ev_signal *w) |
1434 | ev_periodic_again (EV_P_ struct ev_periodic *w) |
|
|
1435 | { |
|
|
1436 | /* TODO: use adjustheap and recalculation */ |
|
|
1437 | ev_periodic_stop (EV_A_ w); |
|
|
1438 | ev_periodic_start (EV_A_ w); |
|
|
1439 | } |
|
|
1440 | #endif |
|
|
1441 | |
|
|
1442 | void |
|
|
1443 | ev_idle_start (EV_P_ struct ev_idle *w) |
610 | { |
1444 | { |
611 | if (ev_is_active (w)) |
1445 | if (ev_is_active (w)) |
612 | return; |
1446 | return; |
613 | |
1447 | |
614 | ev_start ((struct ev_watcher *)w, 1); |
1448 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1449 | array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void)); |
|
|
1450 | idles [idlecnt - 1] = w; |
|
|
1451 | } |
|
|
1452 | |
|
|
1453 | void |
|
|
1454 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1455 | { |
|
|
1456 | ev_clear_pending (EV_A_ (W)w); |
|
|
1457 | if (!ev_is_active (w)) |
|
|
1458 | return; |
|
|
1459 | |
|
|
1460 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
|
|
1461 | ev_stop (EV_A_ (W)w); |
|
|
1462 | } |
|
|
1463 | |
|
|
1464 | void |
|
|
1465 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1466 | { |
|
|
1467 | if (ev_is_active (w)) |
|
|
1468 | return; |
|
|
1469 | |
|
|
1470 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1471 | array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void)); |
|
|
1472 | prepares [preparecnt - 1] = w; |
|
|
1473 | } |
|
|
1474 | |
|
|
1475 | void |
|
|
1476 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1477 | { |
|
|
1478 | ev_clear_pending (EV_A_ (W)w); |
|
|
1479 | if (!ev_is_active (w)) |
|
|
1480 | return; |
|
|
1481 | |
|
|
1482 | prepares [((W)w)->active - 1] = prepares [--preparecnt]; |
|
|
1483 | ev_stop (EV_A_ (W)w); |
|
|
1484 | } |
|
|
1485 | |
|
|
1486 | void |
|
|
1487 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1488 | { |
|
|
1489 | if (ev_is_active (w)) |
|
|
1490 | return; |
|
|
1491 | |
|
|
1492 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1493 | array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void)); |
|
|
1494 | checks [checkcnt - 1] = w; |
|
|
1495 | } |
|
|
1496 | |
|
|
1497 | void |
|
|
1498 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1499 | { |
|
|
1500 | ev_clear_pending (EV_A_ (W)w); |
|
|
1501 | if (!ev_is_active (w)) |
|
|
1502 | return; |
|
|
1503 | |
|
|
1504 | checks [((W)w)->active - 1] = checks [--checkcnt]; |
|
|
1505 | ev_stop (EV_A_ (W)w); |
|
|
1506 | } |
|
|
1507 | |
|
|
1508 | #ifndef SA_RESTART |
|
|
1509 | # define SA_RESTART 0 |
|
|
1510 | #endif |
|
|
1511 | |
|
|
1512 | void |
|
|
1513 | ev_signal_start (EV_P_ struct ev_signal *w) |
|
|
1514 | { |
|
|
1515 | #if EV_MULTIPLICITY |
|
|
1516 | assert (("signal watchers are only supported in the default loop", loop == default_loop)); |
|
|
1517 | #endif |
|
|
1518 | if (ev_is_active (w)) |
|
|
1519 | return; |
|
|
1520 | |
|
|
1521 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1522 | |
|
|
1523 | ev_start (EV_A_ (W)w, 1); |
615 | array_needsize (signals, signalmax, w->signum, signals_init); |
1524 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
616 | wlist_add ((struct ev_watcher_list **)&signals [w->signum - 1].head, (struct ev_watcher_list *)w); |
1525 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
617 | |
1526 | |
618 | if (!w->next) |
1527 | if (!((WL)w)->next) |
619 | { |
1528 | { |
|
|
1529 | #if _WIN32 |
|
|
1530 | signal (w->signum, sighandler); |
|
|
1531 | #else |
620 | struct sigaction sa; |
1532 | struct sigaction sa; |
621 | sa.sa_handler = sighandler; |
1533 | sa.sa_handler = sighandler; |
622 | sigfillset (&sa.sa_mask); |
1534 | sigfillset (&sa.sa_mask); |
623 | sa.sa_flags = 0; |
1535 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
624 | sigaction (w->signum, &sa, 0); |
1536 | sigaction (w->signum, &sa, 0); |
|
|
1537 | #endif |
625 | } |
1538 | } |
626 | } |
1539 | } |
627 | |
1540 | |
628 | void |
1541 | void |
629 | evsignal_stop (struct ev_signal *w) |
1542 | ev_signal_stop (EV_P_ struct ev_signal *w) |
630 | { |
1543 | { |
|
|
1544 | ev_clear_pending (EV_A_ (W)w); |
631 | if (!ev_is_active (w)) |
1545 | if (!ev_is_active (w)) |
632 | return; |
1546 | return; |
633 | |
1547 | |
634 | wlist_del ((struct ev_watcher_list **)&signals [w->signum - 1].head, (struct ev_watcher_list *)w); |
1548 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
635 | ev_stop ((struct ev_watcher *)w); |
1549 | ev_stop (EV_A_ (W)w); |
636 | |
1550 | |
637 | if (!signals [w->signum - 1].head) |
1551 | if (!signals [w->signum - 1].head) |
638 | signal (w->signum, SIG_DFL); |
1552 | signal (w->signum, SIG_DFL); |
639 | } |
1553 | } |
640 | |
1554 | |
|
|
1555 | void |
|
|
1556 | ev_child_start (EV_P_ struct ev_child *w) |
|
|
1557 | { |
|
|
1558 | #if EV_MULTIPLICITY |
|
|
1559 | assert (("child watchers are only supported in the default loop", loop == default_loop)); |
|
|
1560 | #endif |
|
|
1561 | if (ev_is_active (w)) |
|
|
1562 | return; |
|
|
1563 | |
|
|
1564 | ev_start (EV_A_ (W)w, 1); |
|
|
1565 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1566 | } |
|
|
1567 | |
|
|
1568 | void |
|
|
1569 | ev_child_stop (EV_P_ struct ev_child *w) |
|
|
1570 | { |
|
|
1571 | ev_clear_pending (EV_A_ (W)w); |
|
|
1572 | if (!ev_is_active (w)) |
|
|
1573 | return; |
|
|
1574 | |
|
|
1575 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1576 | ev_stop (EV_A_ (W)w); |
|
|
1577 | } |
|
|
1578 | |
641 | /*****************************************************************************/ |
1579 | /*****************************************************************************/ |
642 | #if 1 |
|
|
643 | |
1580 | |
644 | static void |
1581 | struct ev_once |
645 | sin_cb (struct ev_io *w, int revents) |
|
|
646 | { |
1582 | { |
647 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
648 | } |
|
|
649 | |
|
|
650 | static void |
|
|
651 | ocb (struct ev_timer *w, int revents) |
|
|
652 | { |
|
|
653 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
654 | evtimer_stop (w); |
|
|
655 | evtimer_start (w); |
|
|
656 | } |
|
|
657 | |
|
|
658 | static void |
|
|
659 | scb (struct ev_signal *w, int revents) |
|
|
660 | { |
|
|
661 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
662 | } |
|
|
663 | |
|
|
664 | int main (void) |
|
|
665 | { |
|
|
666 | struct ev_io sin; |
1583 | struct ev_io io; |
667 | |
|
|
668 | ev_init (0); |
|
|
669 | |
|
|
670 | evw_init (&sin, sin_cb, 55); |
|
|
671 | evio_set (&sin, 0, EV_READ); |
|
|
672 | evio_start (&sin); |
|
|
673 | |
|
|
674 | struct ev_timer t[10000]; |
|
|
675 | |
|
|
676 | #if 0 |
|
|
677 | int i; |
|
|
678 | for (i = 0; i < 10000; ++i) |
|
|
679 | { |
|
|
680 | struct ev_timer *w = t + i; |
|
|
681 | evw_init (w, ocb, i); |
|
|
682 | evtimer_set_abs (w, drand48 (), 0.99775533); |
|
|
683 | evtimer_start (w); |
|
|
684 | if (drand48 () < 0.5) |
|
|
685 | evtimer_stop (w); |
|
|
686 | } |
|
|
687 | #endif |
|
|
688 | |
|
|
689 | struct ev_timer t1; |
1584 | struct ev_timer to; |
690 | evw_init (&t1, ocb, 0); |
1585 | void (*cb)(int revents, void *arg); |
691 | evtimer_set_abs (&t1, 5, 10); |
1586 | void *arg; |
692 | evtimer_start (&t1); |
1587 | }; |
693 | |
1588 | |
694 | struct ev_signal sig; |
1589 | static void |
695 | evw_init (&sig, scb, 65535); |
1590 | once_cb (EV_P_ struct ev_once *once, int revents) |
696 | evsignal_set (&sig, SIGQUIT); |
1591 | { |
697 | evsignal_start (&sig); |
1592 | void (*cb)(int revents, void *arg) = once->cb; |
|
|
1593 | void *arg = once->arg; |
698 | |
1594 | |
699 | ev_loop (0); |
1595 | ev_io_stop (EV_A_ &once->io); |
|
|
1596 | ev_timer_stop (EV_A_ &once->to); |
|
|
1597 | ev_free (once); |
700 | |
1598 | |
701 | return 0; |
1599 | cb (revents, arg); |
702 | } |
1600 | } |
703 | |
1601 | |
704 | #endif |
1602 | static void |
|
|
1603 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
|
|
1604 | { |
|
|
1605 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
|
|
1606 | } |
705 | |
1607 | |
|
|
1608 | static void |
|
|
1609 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
|
|
1610 | { |
|
|
1611 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
|
|
1612 | } |
706 | |
1613 | |
|
|
1614 | void |
|
|
1615 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
|
|
1616 | { |
|
|
1617 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
707 | |
1618 | |
|
|
1619 | if (!once) |
|
|
1620 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
|
|
1621 | else |
|
|
1622 | { |
|
|
1623 | once->cb = cb; |
|
|
1624 | once->arg = arg; |
708 | |
1625 | |
|
|
1626 | ev_init (&once->io, once_cb_io); |
|
|
1627 | if (fd >= 0) |
|
|
1628 | { |
|
|
1629 | ev_io_set (&once->io, fd, events); |
|
|
1630 | ev_io_start (EV_A_ &once->io); |
|
|
1631 | } |
|
|
1632 | |
|
|
1633 | ev_init (&once->to, once_cb_to); |
|
|
1634 | if (timeout >= 0.) |
|
|
1635 | { |
|
|
1636 | ev_timer_set (&once->to, timeout, 0.); |
|
|
1637 | ev_timer_start (EV_A_ &once->to); |
|
|
1638 | } |
|
|
1639 | } |
|
|
1640 | } |
|
|
1641 | |
|
|
1642 | #ifdef __cplusplus |
|
|
1643 | } |
|
|
1644 | #endif |
|
|
1645 | |