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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 | #ifndef EV_STANDALONE |
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32 | # include "config.h" |
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33 | |
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34 | # if HAVE_CLOCK_GETTIME |
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35 | # define EV_USE_MONOTONIC 1 |
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36 | # define EV_USE_REALTIME 1 |
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37 | # endif |
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38 | |
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39 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
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40 | # define EV_USE_SELECT 1 |
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41 | # endif |
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42 | |
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43 | # if HAVE_POLL && HAVE_POLL_H |
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44 | # define EV_USE_POLL 1 |
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45 | # endif |
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46 | |
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47 | # if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
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48 | # define EV_USE_EPOLL 1 |
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49 | # endif |
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50 | |
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51 | # if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
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52 | # define EV_USE_KQUEUE 1 |
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53 | # endif |
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54 | |
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55 | #endif |
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56 | |
1 | #include <math.h> |
57 | #include <math.h> |
2 | #include <stdlib.h> |
58 | #include <stdlib.h> |
3 | #include <unistd.h> |
59 | #include <unistd.h> |
4 | #include <fcntl.h> |
60 | #include <fcntl.h> |
5 | #include <signal.h> |
61 | #include <signal.h> |
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62 | #include <stddef.h> |
6 | |
63 | |
7 | #include <stdio.h> |
64 | #include <stdio.h> |
8 | |
65 | |
9 | #include <assert.h> |
66 | #include <assert.h> |
10 | #include <errno.h> |
67 | #include <errno.h> |
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68 | #include <sys/types.h> |
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69 | #ifndef WIN32 |
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70 | # include <sys/wait.h> |
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71 | #endif |
11 | #include <sys/time.h> |
72 | #include <sys/time.h> |
12 | #include <time.h> |
73 | #include <time.h> |
13 | |
74 | |
14 | #define HAVE_EPOLL 1 |
75 | /**/ |
15 | |
76 | |
16 | #ifndef HAVE_MONOTONIC |
77 | #ifndef EV_USE_MONOTONIC |
17 | # ifdef CLOCK_MONOTONIC |
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18 | # define HAVE_MONOTONIC 1 |
78 | # define EV_USE_MONOTONIC 1 |
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79 | #endif |
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80 | |
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81 | #ifndef EV_USE_SELECT |
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82 | # define EV_USE_SELECT 1 |
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83 | #endif |
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84 | |
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85 | #ifndef EV_USE_POLL |
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86 | # define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ |
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87 | #endif |
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88 | |
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89 | #ifndef EV_USE_EPOLL |
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90 | # define EV_USE_EPOLL 0 |
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91 | #endif |
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92 | |
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93 | #ifndef EV_USE_KQUEUE |
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94 | # define EV_USE_KQUEUE 0 |
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95 | #endif |
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96 | |
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97 | #ifndef EV_USE_WIN32 |
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98 | # ifdef WIN32 |
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99 | # define EV_USE_WIN32 1 |
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100 | # else |
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101 | # define EV_USE_WIN32 0 |
19 | # endif |
102 | # endif |
20 | #endif |
103 | #endif |
21 | |
104 | |
22 | #ifndef HAVE_SELECT |
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23 | # define HAVE_SELECT 1 |
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24 | #endif |
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25 | |
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26 | #ifndef HAVE_EPOLL |
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27 | # define HAVE_EPOLL 0 |
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28 | #endif |
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29 | |
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30 | #ifndef HAVE_REALTIME |
105 | #ifndef EV_USE_REALTIME |
31 | # define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
106 | # define EV_USE_REALTIME 1 |
32 | #endif |
107 | #endif |
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108 | |
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109 | /**/ |
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110 | |
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111 | #ifndef CLOCK_MONOTONIC |
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112 | # undef EV_USE_MONOTONIC |
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113 | # define EV_USE_MONOTONIC 0 |
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114 | #endif |
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115 | |
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116 | #ifndef CLOCK_REALTIME |
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117 | # undef EV_USE_REALTIME |
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118 | # define EV_USE_REALTIME 0 |
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119 | #endif |
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120 | |
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121 | /**/ |
33 | |
122 | |
34 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
123 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
35 | #define MAX_BLOCKTIME 60. |
124 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ |
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125 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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126 | /*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ |
36 | |
127 | |
37 | #include "ev.h" |
128 | #include "ev.h" |
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129 | |
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130 | #if __GNUC__ >= 3 |
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131 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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132 | # define inline inline |
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133 | #else |
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134 | # define expect(expr,value) (expr) |
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135 | # define inline static |
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136 | #endif |
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137 | |
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138 | #define expect_false(expr) expect ((expr) != 0, 0) |
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139 | #define expect_true(expr) expect ((expr) != 0, 1) |
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140 | |
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141 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
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142 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
38 | |
143 | |
39 | typedef struct ev_watcher *W; |
144 | typedef struct ev_watcher *W; |
40 | typedef struct ev_watcher_list *WL; |
145 | typedef struct ev_watcher_list *WL; |
41 | typedef struct ev_watcher_time *WT; |
146 | typedef struct ev_watcher_time *WT; |
42 | |
147 | |
43 | static ev_tstamp now, diff; /* monotonic clock */ |
148 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
44 | ev_tstamp ev_now; |
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45 | int ev_method; |
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46 | |
149 | |
47 | static int have_monotonic; /* runtime */ |
150 | #if WIN32 |
48 | |
151 | /* note: the comment below could not be substantiated, but what would I care */ |
49 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
152 | /* MSDN says this is required to handle SIGFPE */ |
50 | static void (*method_modify)(int fd, int oev, int nev); |
153 | volatile double SIGFPE_REQ = 0.0f; |
51 | static void (*method_poll)(ev_tstamp timeout); |
154 | #endif |
52 | |
155 | |
53 | /*****************************************************************************/ |
156 | /*****************************************************************************/ |
54 | |
157 | |
55 | ev_tstamp |
158 | typedef struct |
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159 | { |
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160 | WL head; |
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161 | unsigned char events; |
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162 | unsigned char reify; |
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163 | } ANFD; |
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164 | |
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165 | typedef struct |
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166 | { |
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167 | W w; |
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168 | int events; |
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169 | } ANPENDING; |
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170 | |
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171 | #if EV_MULTIPLICITY |
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172 | |
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173 | struct ev_loop |
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174 | { |
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175 | # define VAR(name,decl) decl; |
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176 | # include "ev_vars.h" |
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177 | }; |
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178 | # undef VAR |
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179 | # include "ev_wrap.h" |
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180 | |
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181 | #else |
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182 | |
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183 | # define VAR(name,decl) static decl; |
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184 | # include "ev_vars.h" |
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185 | # undef VAR |
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186 | |
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187 | #endif |
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188 | |
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189 | /*****************************************************************************/ |
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190 | |
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191 | inline ev_tstamp |
56 | ev_time (void) |
192 | ev_time (void) |
57 | { |
193 | { |
58 | #if HAVE_REALTIME |
194 | #if EV_USE_REALTIME |
59 | struct timespec ts; |
195 | struct timespec ts; |
60 | clock_gettime (CLOCK_REALTIME, &ts); |
196 | clock_gettime (CLOCK_REALTIME, &ts); |
61 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
197 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
62 | #else |
198 | #else |
63 | struct timeval tv; |
199 | struct timeval tv; |
64 | gettimeofday (&tv, 0); |
200 | gettimeofday (&tv, 0); |
65 | return tv.tv_sec + tv.tv_usec * 1e-6; |
201 | return tv.tv_sec + tv.tv_usec * 1e-6; |
66 | #endif |
202 | #endif |
67 | } |
203 | } |
68 | |
204 | |
69 | static ev_tstamp |
205 | inline ev_tstamp |
70 | get_clock (void) |
206 | get_clock (void) |
71 | { |
207 | { |
72 | #if HAVE_MONOTONIC |
208 | #if EV_USE_MONOTONIC |
73 | if (have_monotonic) |
209 | if (expect_true (have_monotonic)) |
74 | { |
210 | { |
75 | struct timespec ts; |
211 | struct timespec ts; |
76 | clock_gettime (CLOCK_MONOTONIC, &ts); |
212 | clock_gettime (CLOCK_MONOTONIC, &ts); |
77 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
213 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
78 | } |
214 | } |
79 | #endif |
215 | #endif |
80 | |
216 | |
81 | return ev_time (); |
217 | return ev_time (); |
82 | } |
218 | } |
83 | |
219 | |
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220 | ev_tstamp |
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221 | ev_now (EV_P) |
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222 | { |
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223 | return rt_now; |
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224 | } |
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225 | |
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226 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
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227 | |
84 | #define array_needsize(base,cur,cnt,init) \ |
228 | #define array_needsize(base,cur,cnt,init) \ |
85 | if ((cnt) > cur) \ |
229 | if (expect_false ((cnt) > cur)) \ |
86 | { \ |
230 | { \ |
87 | int newcnt = cur ? cur << 1 : 16; \ |
231 | int newcnt = cur; \ |
88 | fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\ |
232 | do \ |
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233 | { \ |
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234 | newcnt = array_roundsize (base, newcnt << 1); \ |
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235 | } \ |
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236 | while ((cnt) > newcnt); \ |
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237 | \ |
89 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
238 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
90 | init (base + cur, newcnt - cur); \ |
239 | init (base + cur, newcnt - cur); \ |
91 | cur = newcnt; \ |
240 | cur = newcnt; \ |
92 | } |
241 | } |
93 | |
242 | |
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243 | #define array_slim(stem) \ |
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244 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
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245 | { \ |
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246 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
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247 | base = realloc (base, sizeof (*base) * (stem ## max)); \ |
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248 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
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249 | } |
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250 | |
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251 | #define array_free(stem, idx) \ |
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252 | free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
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253 | |
94 | /*****************************************************************************/ |
254 | /*****************************************************************************/ |
95 | |
255 | |
96 | typedef struct |
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97 | { |
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98 | struct ev_io *head; |
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99 | unsigned char wev, rev; /* want, received event set */ |
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100 | } ANFD; |
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101 | |
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102 | static ANFD *anfds; |
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103 | static int anfdmax; |
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104 | |
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105 | static int *fdchanges; |
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106 | static int fdchangemax, fdchangecnt; |
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107 | |
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108 | static void |
256 | static void |
109 | anfds_init (ANFD *base, int count) |
257 | anfds_init (ANFD *base, int count) |
110 | { |
258 | { |
111 | while (count--) |
259 | while (count--) |
112 | { |
260 | { |
113 | base->head = 0; |
261 | base->head = 0; |
114 | base->wev = base->rev = EV_NONE; |
262 | base->events = EV_NONE; |
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263 | base->reify = 0; |
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264 | |
115 | ++base; |
265 | ++base; |
116 | } |
266 | } |
117 | } |
267 | } |
118 | |
268 | |
119 | typedef struct |
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120 | { |
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121 | W w; |
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122 | int events; |
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123 | } ANPENDING; |
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124 | |
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125 | static ANPENDING *pendings; |
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126 | static int pendingmax, pendingcnt; |
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127 | |
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128 | static void |
269 | static void |
129 | event (W w, int events) |
270 | event (EV_P_ W w, int events) |
130 | { |
271 | { |
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272 | if (w->pending) |
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273 | { |
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274 | pendings [ABSPRI (w)][w->pending - 1].events |= events; |
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275 | return; |
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276 | } |
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277 | |
131 | w->pending = ++pendingcnt; |
278 | w->pending = ++pendingcnt [ABSPRI (w)]; |
132 | array_needsize (pendings, pendingmax, pendingcnt, ); |
279 | array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); |
133 | pendings [pendingcnt - 1].w = w; |
280 | pendings [ABSPRI (w)][w->pending - 1].w = w; |
134 | pendings [pendingcnt - 1].events = events; |
281 | pendings [ABSPRI (w)][w->pending - 1].events = events; |
135 | } |
282 | } |
136 | |
283 | |
137 | static void |
284 | static void |
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285 | queue_events (EV_P_ W *events, int eventcnt, int type) |
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286 | { |
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287 | int i; |
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288 | |
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289 | for (i = 0; i < eventcnt; ++i) |
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290 | event (EV_A_ events [i], type); |
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291 | } |
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292 | |
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293 | static void |
138 | fd_event (int fd, int events) |
294 | fd_event (EV_P_ int fd, int events) |
139 | { |
295 | { |
140 | ANFD *anfd = anfds + fd; |
296 | ANFD *anfd = anfds + fd; |
141 | struct ev_io *w; |
297 | struct ev_io *w; |
142 | |
298 | |
143 | for (w = anfd->head; w; w = w->next) |
299 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
144 | { |
300 | { |
145 | int ev = w->events & events; |
301 | int ev = w->events & events; |
146 | |
302 | |
147 | if (ev) |
303 | if (ev) |
148 | event ((W)w, ev); |
304 | event (EV_A_ (W)w, ev); |
149 | } |
305 | } |
150 | } |
306 | } |
151 | |
307 | |
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308 | /*****************************************************************************/ |
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309 | |
152 | static void |
310 | static void |
153 | queue_events (W *events, int eventcnt, int type) |
311 | fd_reify (EV_P) |
154 | { |
312 | { |
155 | int i; |
313 | int i; |
156 | |
314 | |
157 | for (i = 0; i < eventcnt; ++i) |
315 | for (i = 0; i < fdchangecnt; ++i) |
158 | event (events [i], type); |
316 | { |
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317 | int fd = fdchanges [i]; |
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318 | ANFD *anfd = anfds + fd; |
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319 | struct ev_io *w; |
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320 | |
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321 | int events = 0; |
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322 | |
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323 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
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324 | events |= w->events; |
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325 | |
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326 | anfd->reify = 0; |
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327 | |
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328 | method_modify (EV_A_ fd, anfd->events, events); |
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329 | anfd->events = events; |
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330 | } |
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331 | |
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332 | fdchangecnt = 0; |
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333 | } |
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334 | |
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335 | static void |
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336 | fd_change (EV_P_ int fd) |
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337 | { |
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338 | if (anfds [fd].reify || fdchangecnt < 0) |
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339 | return; |
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340 | |
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341 | anfds [fd].reify = 1; |
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342 | |
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343 | ++fdchangecnt; |
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344 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
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345 | fdchanges [fdchangecnt - 1] = fd; |
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346 | } |
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347 | |
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348 | static void |
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349 | fd_kill (EV_P_ int fd) |
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350 | { |
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351 | struct ev_io *w; |
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352 | |
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353 | while ((w = (struct ev_io *)anfds [fd].head)) |
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354 | { |
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355 | ev_io_stop (EV_A_ w); |
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356 | event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
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357 | } |
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358 | } |
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359 | |
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360 | /* called on EBADF to verify fds */ |
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361 | static void |
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362 | fd_ebadf (EV_P) |
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363 | { |
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364 | int fd; |
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365 | |
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366 | for (fd = 0; fd < anfdmax; ++fd) |
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367 | if (anfds [fd].events) |
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368 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
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369 | fd_kill (EV_A_ fd); |
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370 | } |
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371 | |
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372 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
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373 | static void |
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374 | fd_enomem (EV_P) |
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375 | { |
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376 | int fd; |
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377 | |
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378 | for (fd = anfdmax; fd--; ) |
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379 | if (anfds [fd].events) |
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380 | { |
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381 | fd_kill (EV_A_ fd); |
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382 | return; |
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383 | } |
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384 | } |
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385 | |
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386 | /* susually called after fork if method needs to re-arm all fds from scratch */ |
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387 | static void |
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388 | fd_rearm_all (EV_P) |
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389 | { |
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390 | int fd; |
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391 | |
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392 | /* this should be highly optimised to not do anything but set a flag */ |
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393 | for (fd = 0; fd < anfdmax; ++fd) |
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394 | if (anfds [fd].events) |
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395 | { |
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396 | anfds [fd].events = 0; |
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397 | fd_change (EV_A_ fd); |
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398 | } |
159 | } |
399 | } |
160 | |
400 | |
161 | /*****************************************************************************/ |
401 | /*****************************************************************************/ |
162 | |
402 | |
163 | static struct ev_timer **timers; |
|
|
164 | static int timermax, timercnt; |
|
|
165 | |
|
|
166 | static struct ev_periodic **periodics; |
|
|
167 | static int periodicmax, periodiccnt; |
|
|
168 | |
|
|
169 | static void |
403 | static void |
170 | upheap (WT *timers, int k) |
404 | upheap (WT *heap, int k) |
171 | { |
405 | { |
172 | WT w = timers [k]; |
406 | WT w = heap [k]; |
173 | |
407 | |
174 | while (k && timers [k >> 1]->at > w->at) |
408 | while (k && heap [k >> 1]->at > w->at) |
175 | { |
409 | { |
176 | timers [k] = timers [k >> 1]; |
410 | heap [k] = heap [k >> 1]; |
177 | timers [k]->active = k + 1; |
411 | ((W)heap [k])->active = k + 1; |
178 | k >>= 1; |
412 | k >>= 1; |
179 | } |
413 | } |
180 | |
414 | |
181 | timers [k] = w; |
415 | heap [k] = w; |
182 | timers [k]->active = k + 1; |
416 | ((W)heap [k])->active = k + 1; |
183 | |
417 | |
184 | } |
418 | } |
185 | |
419 | |
186 | static void |
420 | static void |
187 | downheap (WT *timers, int N, int k) |
421 | downheap (WT *heap, int N, int k) |
188 | { |
422 | { |
189 | WT w = timers [k]; |
423 | WT w = heap [k]; |
190 | |
424 | |
191 | while (k < (N >> 1)) |
425 | while (k < (N >> 1)) |
192 | { |
426 | { |
193 | int j = k << 1; |
427 | int j = k << 1; |
194 | |
428 | |
195 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
429 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
196 | ++j; |
430 | ++j; |
197 | |
431 | |
198 | if (w->at <= timers [j]->at) |
432 | if (w->at <= heap [j]->at) |
199 | break; |
433 | break; |
200 | |
434 | |
201 | timers [k] = timers [j]; |
435 | heap [k] = heap [j]; |
202 | timers [k]->active = k + 1; |
436 | ((W)heap [k])->active = k + 1; |
203 | k = j; |
437 | k = j; |
204 | } |
438 | } |
205 | |
439 | |
206 | timers [k] = w; |
440 | heap [k] = w; |
207 | timers [k]->active = k + 1; |
441 | ((W)heap [k])->active = k + 1; |
208 | } |
442 | } |
209 | |
443 | |
210 | /*****************************************************************************/ |
444 | /*****************************************************************************/ |
211 | |
445 | |
212 | typedef struct |
446 | typedef struct |
213 | { |
447 | { |
214 | struct ev_signal *head; |
448 | WL head; |
215 | sig_atomic_t gotsig; |
449 | sig_atomic_t volatile gotsig; |
216 | } ANSIG; |
450 | } ANSIG; |
217 | |
451 | |
218 | static ANSIG *signals; |
452 | static ANSIG *signals; |
219 | static int signalmax; |
453 | static int signalmax; |
220 | |
454 | |
221 | static int sigpipe [2]; |
455 | static int sigpipe [2]; |
222 | static sig_atomic_t gotsig; |
456 | static sig_atomic_t volatile gotsig; |
223 | static struct ev_io sigev; |
457 | static struct ev_io sigev; |
224 | |
458 | |
225 | static void |
459 | static void |
226 | signals_init (ANSIG *base, int count) |
460 | signals_init (ANSIG *base, int count) |
227 | { |
461 | { |
228 | while (count--) |
462 | while (count--) |
229 | { |
463 | { |
230 | base->head = 0; |
464 | base->head = 0; |
231 | base->gotsig = 0; |
465 | base->gotsig = 0; |
|
|
466 | |
232 | ++base; |
467 | ++base; |
233 | } |
468 | } |
234 | } |
469 | } |
235 | |
470 | |
236 | static void |
471 | static void |
237 | sighandler (int signum) |
472 | sighandler (int signum) |
238 | { |
473 | { |
|
|
474 | #if WIN32 |
|
|
475 | signal (signum, sighandler); |
|
|
476 | #endif |
|
|
477 | |
239 | signals [signum - 1].gotsig = 1; |
478 | signals [signum - 1].gotsig = 1; |
240 | |
479 | |
241 | if (!gotsig) |
480 | if (!gotsig) |
242 | { |
481 | { |
|
|
482 | int old_errno = errno; |
243 | gotsig = 1; |
483 | gotsig = 1; |
244 | write (sigpipe [1], &gotsig, 1); |
484 | write (sigpipe [1], &signum, 1); |
|
|
485 | errno = old_errno; |
245 | } |
486 | } |
246 | } |
487 | } |
247 | |
488 | |
248 | static void |
489 | static void |
249 | sigcb (struct ev_io *iow, int revents) |
490 | sigcb (EV_P_ struct ev_io *iow, int revents) |
250 | { |
491 | { |
251 | struct ev_signal *w; |
492 | WL w; |
252 | int sig; |
493 | int signum; |
253 | |
494 | |
|
|
495 | read (sigpipe [0], &revents, 1); |
254 | gotsig = 0; |
496 | gotsig = 0; |
255 | read (sigpipe [0], &revents, 1); |
|
|
256 | |
497 | |
257 | for (sig = signalmax; sig--; ) |
498 | for (signum = signalmax; signum--; ) |
258 | if (signals [sig].gotsig) |
499 | if (signals [signum].gotsig) |
259 | { |
500 | { |
260 | signals [sig].gotsig = 0; |
501 | signals [signum].gotsig = 0; |
261 | |
502 | |
262 | for (w = signals [sig].head; w; w = w->next) |
503 | for (w = signals [signum].head; w; w = w->next) |
263 | event ((W)w, EV_SIGNAL); |
504 | event (EV_A_ (W)w, EV_SIGNAL); |
264 | } |
505 | } |
265 | } |
506 | } |
266 | |
507 | |
267 | static void |
508 | static void |
268 | siginit (void) |
509 | siginit (EV_P) |
269 | { |
510 | { |
|
|
511 | #ifndef WIN32 |
270 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
512 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
271 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
513 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
272 | |
514 | |
273 | /* rather than sort out wether we really need nb, set it */ |
515 | /* rather than sort out wether we really need nb, set it */ |
274 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
516 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
275 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
517 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
518 | #endif |
276 | |
519 | |
277 | evio_set (&sigev, sigpipe [0], EV_READ); |
520 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
278 | evio_start (&sigev); |
521 | ev_io_start (EV_A_ &sigev); |
|
|
522 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
279 | } |
523 | } |
280 | |
524 | |
281 | /*****************************************************************************/ |
525 | /*****************************************************************************/ |
282 | |
526 | |
283 | static struct ev_idle **idles; |
527 | #ifndef WIN32 |
284 | static int idlemax, idlecnt; |
|
|
285 | |
528 | |
286 | static struct ev_check **checks; |
529 | static struct ev_child *childs [PID_HASHSIZE]; |
287 | static int checkmax, checkcnt; |
530 | static struct ev_signal childev; |
|
|
531 | |
|
|
532 | #ifndef WCONTINUED |
|
|
533 | # define WCONTINUED 0 |
|
|
534 | #endif |
|
|
535 | |
|
|
536 | static void |
|
|
537 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
|
|
538 | { |
|
|
539 | struct ev_child *w; |
|
|
540 | |
|
|
541 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
542 | if (w->pid == pid || !w->pid) |
|
|
543 | { |
|
|
544 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
|
|
545 | w->rpid = pid; |
|
|
546 | w->rstatus = status; |
|
|
547 | event (EV_A_ (W)w, EV_CHILD); |
|
|
548 | } |
|
|
549 | } |
|
|
550 | |
|
|
551 | static void |
|
|
552 | childcb (EV_P_ struct ev_signal *sw, int revents) |
|
|
553 | { |
|
|
554 | int pid, status; |
|
|
555 | |
|
|
556 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
|
|
557 | { |
|
|
558 | /* make sure we are called again until all childs have been reaped */ |
|
|
559 | event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
560 | |
|
|
561 | child_reap (EV_A_ sw, pid, pid, status); |
|
|
562 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
|
|
563 | } |
|
|
564 | } |
|
|
565 | |
|
|
566 | #endif |
288 | |
567 | |
289 | /*****************************************************************************/ |
568 | /*****************************************************************************/ |
290 | |
569 | |
|
|
570 | #if EV_USE_KQUEUE |
|
|
571 | # include "ev_kqueue.c" |
|
|
572 | #endif |
291 | #if HAVE_EPOLL |
573 | #if EV_USE_EPOLL |
292 | # include "ev_epoll.c" |
574 | # include "ev_epoll.c" |
293 | #endif |
575 | #endif |
|
|
576 | #if EV_USE_POLL |
|
|
577 | # include "ev_poll.c" |
|
|
578 | #endif |
294 | #if HAVE_SELECT |
579 | #if EV_USE_SELECT |
295 | # include "ev_select.c" |
580 | # include "ev_select.c" |
296 | #endif |
581 | #endif |
297 | |
582 | |
298 | int ev_init (int flags) |
583 | int |
|
|
584 | ev_version_major (void) |
299 | { |
585 | { |
|
|
586 | return EV_VERSION_MAJOR; |
|
|
587 | } |
|
|
588 | |
|
|
589 | int |
|
|
590 | ev_version_minor (void) |
|
|
591 | { |
|
|
592 | return EV_VERSION_MINOR; |
|
|
593 | } |
|
|
594 | |
|
|
595 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
596 | static int |
|
|
597 | enable_secure (void) |
|
|
598 | { |
|
|
599 | #ifdef WIN32 |
|
|
600 | return 0; |
|
|
601 | #else |
|
|
602 | return getuid () != geteuid () |
|
|
603 | || getgid () != getegid (); |
|
|
604 | #endif |
|
|
605 | } |
|
|
606 | |
|
|
607 | int |
|
|
608 | ev_method (EV_P) |
|
|
609 | { |
|
|
610 | return method; |
|
|
611 | } |
|
|
612 | |
|
|
613 | static void |
|
|
614 | loop_init (EV_P_ int methods) |
|
|
615 | { |
|
|
616 | if (!method) |
|
|
617 | { |
300 | #if HAVE_MONOTONIC |
618 | #if EV_USE_MONOTONIC |
301 | { |
619 | { |
302 | struct timespec ts; |
620 | struct timespec ts; |
303 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
621 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
304 | have_monotonic = 1; |
622 | have_monotonic = 1; |
305 | } |
623 | } |
306 | #endif |
624 | #endif |
307 | |
625 | |
308 | ev_now = ev_time (); |
626 | rt_now = ev_time (); |
309 | now = get_clock (); |
627 | mn_now = get_clock (); |
310 | diff = ev_now - now; |
628 | now_floor = mn_now; |
|
|
629 | rtmn_diff = rt_now - mn_now; |
311 | |
630 | |
|
|
631 | if (methods == EVMETHOD_AUTO) |
|
|
632 | if (!enable_secure () && getenv ("LIBEV_METHODS")) |
|
|
633 | methods = atoi (getenv ("LIBEV_METHODS")); |
|
|
634 | else |
|
|
635 | methods = EVMETHOD_ANY; |
|
|
636 | |
|
|
637 | method = 0; |
|
|
638 | #if EV_USE_WIN32 |
|
|
639 | if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); |
|
|
640 | #endif |
|
|
641 | #if EV_USE_KQUEUE |
|
|
642 | if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); |
|
|
643 | #endif |
|
|
644 | #if EV_USE_EPOLL |
|
|
645 | if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); |
|
|
646 | #endif |
|
|
647 | #if EV_USE_POLL |
|
|
648 | if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); |
|
|
649 | #endif |
|
|
650 | #if EV_USE_SELECT |
|
|
651 | if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); |
|
|
652 | #endif |
|
|
653 | } |
|
|
654 | } |
|
|
655 | |
|
|
656 | void |
|
|
657 | loop_destroy (EV_P) |
|
|
658 | { |
|
|
659 | int i; |
|
|
660 | |
|
|
661 | #if EV_USE_WIN32 |
|
|
662 | if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); |
|
|
663 | #endif |
|
|
664 | #if EV_USE_KQUEUE |
|
|
665 | if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); |
|
|
666 | #endif |
|
|
667 | #if EV_USE_EPOLL |
|
|
668 | if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); |
|
|
669 | #endif |
|
|
670 | #if EV_USE_POLL |
|
|
671 | if (method == EVMETHOD_POLL ) poll_destroy (EV_A); |
|
|
672 | #endif |
|
|
673 | #if EV_USE_SELECT |
|
|
674 | if (method == EVMETHOD_SELECT) select_destroy (EV_A); |
|
|
675 | #endif |
|
|
676 | |
|
|
677 | for (i = NUMPRI; i--; ) |
|
|
678 | array_free (pending, [i]); |
|
|
679 | |
|
|
680 | array_free (fdchange, ); |
|
|
681 | array_free (timer, ); |
|
|
682 | array_free (periodic, ); |
|
|
683 | array_free (idle, ); |
|
|
684 | array_free (prepare, ); |
|
|
685 | array_free (check, ); |
|
|
686 | |
|
|
687 | method = 0; |
|
|
688 | /*TODO*/ |
|
|
689 | } |
|
|
690 | |
|
|
691 | void |
|
|
692 | loop_fork (EV_P) |
|
|
693 | { |
|
|
694 | /*TODO*/ |
|
|
695 | #if EV_USE_EPOLL |
|
|
696 | if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); |
|
|
697 | #endif |
|
|
698 | #if EV_USE_KQUEUE |
|
|
699 | if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); |
|
|
700 | #endif |
|
|
701 | } |
|
|
702 | |
|
|
703 | #if EV_MULTIPLICITY |
|
|
704 | struct ev_loop * |
|
|
705 | ev_loop_new (int methods) |
|
|
706 | { |
|
|
707 | struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); |
|
|
708 | |
|
|
709 | loop_init (EV_A_ methods); |
|
|
710 | |
|
|
711 | if (ev_method (EV_A)) |
|
|
712 | return loop; |
|
|
713 | |
|
|
714 | return 0; |
|
|
715 | } |
|
|
716 | |
|
|
717 | void |
|
|
718 | ev_loop_destroy (EV_P) |
|
|
719 | { |
|
|
720 | loop_destroy (EV_A); |
|
|
721 | free (loop); |
|
|
722 | } |
|
|
723 | |
|
|
724 | void |
|
|
725 | ev_loop_fork (EV_P) |
|
|
726 | { |
|
|
727 | loop_fork (EV_A); |
|
|
728 | } |
|
|
729 | |
|
|
730 | #endif |
|
|
731 | |
|
|
732 | #if EV_MULTIPLICITY |
|
|
733 | struct ev_loop default_loop_struct; |
|
|
734 | static struct ev_loop *default_loop; |
|
|
735 | |
|
|
736 | struct ev_loop * |
|
|
737 | #else |
|
|
738 | static int default_loop; |
|
|
739 | |
|
|
740 | int |
|
|
741 | #endif |
|
|
742 | ev_default_loop (int methods) |
|
|
743 | { |
|
|
744 | if (sigpipe [0] == sigpipe [1]) |
312 | if (pipe (sigpipe)) |
745 | if (pipe (sigpipe)) |
313 | return 0; |
746 | return 0; |
314 | |
747 | |
315 | ev_method = EVMETHOD_NONE; |
748 | if (!default_loop) |
316 | #if HAVE_EPOLL |
|
|
317 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
|
|
318 | #endif |
|
|
319 | #if HAVE_SELECT |
|
|
320 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
321 | #endif |
|
|
322 | |
|
|
323 | if (ev_method) |
|
|
324 | { |
749 | { |
|
|
750 | #if EV_MULTIPLICITY |
|
|
751 | struct ev_loop *loop = default_loop = &default_loop_struct; |
|
|
752 | #else |
|
|
753 | default_loop = 1; |
|
|
754 | #endif |
|
|
755 | |
|
|
756 | loop_init (EV_A_ methods); |
|
|
757 | |
|
|
758 | if (ev_method (EV_A)) |
|
|
759 | { |
325 | evw_init (&sigev, sigcb); |
760 | ev_watcher_init (&sigev, sigcb); |
|
|
761 | ev_set_priority (&sigev, EV_MAXPRI); |
326 | siginit (); |
762 | siginit (EV_A); |
327 | } |
|
|
328 | |
763 | |
329 | return ev_method; |
764 | #ifndef WIN32 |
330 | } |
765 | ev_signal_init (&childev, childcb, SIGCHLD); |
331 | |
766 | ev_set_priority (&childev, EV_MAXPRI); |
332 | /*****************************************************************************/ |
767 | ev_signal_start (EV_A_ &childev); |
333 | |
768 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
334 | void ev_prefork (void) |
|
|
335 | { |
|
|
336 | /* nop */ |
|
|
337 | } |
|
|
338 | |
|
|
339 | void ev_postfork_parent (void) |
|
|
340 | { |
|
|
341 | /* nop */ |
|
|
342 | } |
|
|
343 | |
|
|
344 | void ev_postfork_child (void) |
|
|
345 | { |
|
|
346 | #if HAVE_EPOLL |
|
|
347 | if (ev_method == EVMETHOD_EPOLL) |
|
|
348 | epoll_postfork_child (); |
|
|
349 | #endif |
769 | #endif |
|
|
770 | } |
|
|
771 | else |
|
|
772 | default_loop = 0; |
|
|
773 | } |
350 | |
774 | |
|
|
775 | return default_loop; |
|
|
776 | } |
|
|
777 | |
|
|
778 | void |
|
|
779 | ev_default_destroy (void) |
|
|
780 | { |
|
|
781 | #if EV_MULTIPLICITY |
|
|
782 | struct ev_loop *loop = default_loop; |
|
|
783 | #endif |
|
|
784 | |
|
|
785 | ev_ref (EV_A); /* child watcher */ |
|
|
786 | ev_signal_stop (EV_A_ &childev); |
|
|
787 | |
|
|
788 | ev_ref (EV_A); /* signal watcher */ |
351 | evio_stop (&sigev); |
789 | ev_io_stop (EV_A_ &sigev); |
|
|
790 | |
|
|
791 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
792 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
793 | |
|
|
794 | loop_destroy (EV_A); |
|
|
795 | } |
|
|
796 | |
|
|
797 | void |
|
|
798 | ev_default_fork (void) |
|
|
799 | { |
|
|
800 | #if EV_MULTIPLICITY |
|
|
801 | struct ev_loop *loop = default_loop; |
|
|
802 | #endif |
|
|
803 | |
|
|
804 | loop_fork (EV_A); |
|
|
805 | |
|
|
806 | ev_io_stop (EV_A_ &sigev); |
352 | close (sigpipe [0]); |
807 | close (sigpipe [0]); |
353 | close (sigpipe [1]); |
808 | close (sigpipe [1]); |
354 | pipe (sigpipe); |
809 | pipe (sigpipe); |
|
|
810 | |
|
|
811 | ev_ref (EV_A); /* signal watcher */ |
355 | siginit (); |
812 | siginit (EV_A); |
356 | } |
813 | } |
357 | |
814 | |
358 | /*****************************************************************************/ |
815 | /*****************************************************************************/ |
359 | |
816 | |
360 | static void |
817 | static void |
361 | fd_reify (void) |
818 | call_pending (EV_P) |
362 | { |
819 | { |
363 | int i; |
820 | int pri; |
364 | |
821 | |
365 | for (i = 0; i < fdchangecnt; ++i) |
822 | for (pri = NUMPRI; pri--; ) |
366 | { |
823 | while (pendingcnt [pri]) |
367 | int fd = fdchanges [i]; |
|
|
368 | ANFD *anfd = anfds + fd; |
|
|
369 | struct ev_io *w; |
|
|
370 | |
|
|
371 | int wev = 0; |
|
|
372 | |
|
|
373 | for (w = anfd->head; w; w = w->next) |
|
|
374 | wev |= w->events; |
|
|
375 | |
|
|
376 | if (anfd->wev != wev) |
|
|
377 | { |
824 | { |
378 | method_modify (fd, anfd->wev, wev); |
825 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
379 | anfd->wev = wev; |
|
|
380 | } |
|
|
381 | } |
|
|
382 | |
826 | |
383 | fdchangecnt = 0; |
|
|
384 | } |
|
|
385 | |
|
|
386 | static void |
|
|
387 | call_pending () |
|
|
388 | { |
|
|
389 | int i; |
|
|
390 | |
|
|
391 | for (i = 0; i < pendingcnt; ++i) |
|
|
392 | { |
|
|
393 | ANPENDING *p = pendings + i; |
|
|
394 | |
|
|
395 | if (p->w) |
827 | if (p->w) |
396 | { |
828 | { |
397 | p->w->pending = 0; |
829 | p->w->pending = 0; |
398 | p->w->cb (p->w, p->events); |
830 | p->w->cb (EV_A_ p->w, p->events); |
399 | } |
831 | } |
400 | } |
832 | } |
401 | |
|
|
402 | pendingcnt = 0; |
|
|
403 | } |
833 | } |
404 | |
834 | |
405 | static void |
835 | static void |
406 | timers_reify () |
836 | timers_reify (EV_P) |
407 | { |
837 | { |
408 | while (timercnt && timers [0]->at <= now) |
838 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
409 | { |
839 | { |
410 | struct ev_timer *w = timers [0]; |
840 | struct ev_timer *w = timers [0]; |
|
|
841 | |
|
|
842 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
411 | |
843 | |
412 | /* first reschedule or stop timer */ |
844 | /* first reschedule or stop timer */ |
413 | if (w->repeat) |
845 | if (w->repeat) |
414 | { |
846 | { |
|
|
847 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
415 | w->at = now + w->repeat; |
848 | ((WT)w)->at = mn_now + w->repeat; |
416 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
|
|
417 | downheap ((WT *)timers, timercnt, 0); |
849 | downheap ((WT *)timers, timercnt, 0); |
418 | } |
850 | } |
419 | else |
851 | else |
420 | evtimer_stop (w); /* nonrepeating: stop timer */ |
852 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
421 | |
853 | |
422 | event ((W)w, EV_TIMEOUT); |
854 | event (EV_A_ (W)w, EV_TIMEOUT); |
423 | } |
855 | } |
424 | } |
856 | } |
425 | |
857 | |
426 | static void |
858 | static void |
427 | periodics_reify () |
859 | periodics_reify (EV_P) |
428 | { |
860 | { |
429 | while (periodiccnt && periodics [0]->at <= ev_now) |
861 | while (periodiccnt && ((WT)periodics [0])->at <= rt_now) |
430 | { |
862 | { |
431 | struct ev_periodic *w = periodics [0]; |
863 | struct ev_periodic *w = periodics [0]; |
|
|
864 | |
|
|
865 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
432 | |
866 | |
433 | /* first reschedule or stop timer */ |
867 | /* first reschedule or stop timer */ |
434 | if (w->interval) |
868 | if (w->interval) |
435 | { |
869 | { |
436 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
870 | ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
437 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
871 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); |
438 | downheap ((WT *)periodics, periodiccnt, 0); |
872 | downheap ((WT *)periodics, periodiccnt, 0); |
439 | } |
873 | } |
440 | else |
874 | else |
441 | evperiodic_stop (w); /* nonrepeating: stop timer */ |
875 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
442 | |
876 | |
443 | event ((W)w, EV_TIMEOUT); |
877 | event (EV_A_ (W)w, EV_PERIODIC); |
444 | } |
878 | } |
445 | } |
879 | } |
446 | |
880 | |
447 | static void |
881 | static void |
448 | periodics_reschedule (ev_tstamp diff) |
882 | periodics_reschedule (EV_P) |
449 | { |
883 | { |
450 | int i; |
884 | int i; |
451 | |
885 | |
452 | /* adjust periodics after time jump */ |
886 | /* adjust periodics after time jump */ |
453 | for (i = 0; i < periodiccnt; ++i) |
887 | for (i = 0; i < periodiccnt; ++i) |
454 | { |
888 | { |
455 | struct ev_periodic *w = periodics [i]; |
889 | struct ev_periodic *w = periodics [i]; |
456 | |
890 | |
457 | if (w->interval) |
891 | if (w->interval) |
458 | { |
892 | { |
459 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
893 | ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; |
460 | |
894 | |
461 | if (fabs (diff) >= 1e-4) |
895 | if (fabs (diff) >= 1e-4) |
462 | { |
896 | { |
463 | evperiodic_stop (w); |
897 | ev_periodic_stop (EV_A_ w); |
464 | evperiodic_start (w); |
898 | ev_periodic_start (EV_A_ w); |
465 | |
899 | |
466 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
900 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
467 | } |
901 | } |
468 | } |
902 | } |
469 | } |
903 | } |
470 | } |
904 | } |
471 | |
905 | |
|
|
906 | inline int |
|
|
907 | time_update_monotonic (EV_P) |
|
|
908 | { |
|
|
909 | mn_now = get_clock (); |
|
|
910 | |
|
|
911 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
912 | { |
|
|
913 | rt_now = rtmn_diff + mn_now; |
|
|
914 | return 0; |
|
|
915 | } |
|
|
916 | else |
|
|
917 | { |
|
|
918 | now_floor = mn_now; |
|
|
919 | rt_now = ev_time (); |
|
|
920 | return 1; |
|
|
921 | } |
|
|
922 | } |
|
|
923 | |
472 | static void |
924 | static void |
473 | time_update () |
925 | time_update (EV_P) |
474 | { |
926 | { |
475 | int i; |
927 | int i; |
476 | |
928 | |
477 | ev_now = ev_time (); |
929 | #if EV_USE_MONOTONIC |
478 | |
|
|
479 | if (have_monotonic) |
930 | if (expect_true (have_monotonic)) |
480 | { |
931 | { |
481 | ev_tstamp odiff = diff; |
932 | if (time_update_monotonic (EV_A)) |
482 | |
|
|
483 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
484 | { |
933 | { |
485 | now = get_clock (); |
934 | ev_tstamp odiff = rtmn_diff; |
|
|
935 | |
|
|
936 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
937 | { |
486 | diff = ev_now - now; |
938 | rtmn_diff = rt_now - mn_now; |
487 | |
939 | |
488 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
940 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
489 | return; /* all is well */ |
941 | return; /* all is well */ |
490 | |
942 | |
491 | ev_now = ev_time (); |
943 | rt_now = ev_time (); |
|
|
944 | mn_now = get_clock (); |
|
|
945 | now_floor = mn_now; |
|
|
946 | } |
|
|
947 | |
|
|
948 | periodics_reschedule (EV_A); |
|
|
949 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
950 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
492 | } |
951 | } |
493 | |
|
|
494 | periodics_reschedule (diff - odiff); |
|
|
495 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
496 | } |
952 | } |
497 | else |
953 | else |
|
|
954 | #endif |
498 | { |
955 | { |
499 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
956 | rt_now = ev_time (); |
|
|
957 | |
|
|
958 | if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
500 | { |
959 | { |
501 | periodics_reschedule (ev_now - now); |
960 | periodics_reschedule (EV_A); |
502 | |
961 | |
503 | /* adjust timers. this is easy, as the offset is the same for all */ |
962 | /* adjust timers. this is easy, as the offset is the same for all */ |
504 | for (i = 0; i < timercnt; ++i) |
963 | for (i = 0; i < timercnt; ++i) |
505 | timers [i]->at += diff; |
964 | ((WT)timers [i])->at += rt_now - mn_now; |
506 | } |
965 | } |
507 | |
966 | |
508 | now = ev_now; |
967 | mn_now = rt_now; |
509 | } |
968 | } |
510 | } |
969 | } |
511 | |
970 | |
512 | int ev_loop_done; |
971 | void |
|
|
972 | ev_ref (EV_P) |
|
|
973 | { |
|
|
974 | ++activecnt; |
|
|
975 | } |
513 | |
976 | |
|
|
977 | void |
|
|
978 | ev_unref (EV_P) |
|
|
979 | { |
|
|
980 | --activecnt; |
|
|
981 | } |
|
|
982 | |
|
|
983 | static int loop_done; |
|
|
984 | |
|
|
985 | void |
514 | void ev_loop (int flags) |
986 | ev_loop (EV_P_ int flags) |
515 | { |
987 | { |
516 | double block; |
988 | double block; |
517 | ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0; |
989 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
518 | |
|
|
519 | if (checkcnt) |
|
|
520 | { |
|
|
521 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
|
|
522 | call_pending (); |
|
|
523 | } |
|
|
524 | |
990 | |
525 | do |
991 | do |
526 | { |
992 | { |
|
|
993 | /* queue check watchers (and execute them) */ |
|
|
994 | if (expect_false (preparecnt)) |
|
|
995 | { |
|
|
996 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
|
|
997 | call_pending (EV_A); |
|
|
998 | } |
|
|
999 | |
527 | /* update fd-related kernel structures */ |
1000 | /* update fd-related kernel structures */ |
528 | fd_reify (); |
1001 | fd_reify (EV_A); |
529 | |
1002 | |
530 | /* calculate blocking time */ |
1003 | /* calculate blocking time */ |
531 | |
1004 | |
532 | /* we only need this for !monotonic clock, but as we always have timers, we just calculate it every time */ |
1005 | /* we only need this for !monotonic clockor timers, but as we basically |
|
|
1006 | always have timers, we just calculate it always */ |
|
|
1007 | #if EV_USE_MONOTONIC |
|
|
1008 | if (expect_true (have_monotonic)) |
|
|
1009 | time_update_monotonic (EV_A); |
|
|
1010 | else |
|
|
1011 | #endif |
|
|
1012 | { |
533 | ev_now = ev_time (); |
1013 | rt_now = ev_time (); |
|
|
1014 | mn_now = rt_now; |
|
|
1015 | } |
534 | |
1016 | |
535 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
1017 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
536 | block = 0.; |
1018 | block = 0.; |
537 | else |
1019 | else |
538 | { |
1020 | { |
539 | block = MAX_BLOCKTIME; |
1021 | block = MAX_BLOCKTIME; |
540 | |
1022 | |
541 | if (timercnt) |
1023 | if (timercnt) |
542 | { |
1024 | { |
543 | ev_tstamp to = timers [0]->at - get_clock () + method_fudge; |
1025 | ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; |
544 | if (block > to) block = to; |
1026 | if (block > to) block = to; |
545 | } |
1027 | } |
546 | |
1028 | |
547 | if (periodiccnt) |
1029 | if (periodiccnt) |
548 | { |
1030 | { |
549 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
1031 | ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; |
550 | if (block > to) block = to; |
1032 | if (block > to) block = to; |
551 | } |
1033 | } |
552 | |
1034 | |
553 | if (block < 0.) block = 0.; |
1035 | if (block < 0.) block = 0.; |
554 | } |
1036 | } |
555 | |
1037 | |
556 | method_poll (block); |
1038 | method_poll (EV_A_ block); |
557 | |
1039 | |
558 | /* update ev_now, do magic */ |
1040 | /* update rt_now, do magic */ |
559 | time_update (); |
1041 | time_update (EV_A); |
560 | |
1042 | |
561 | /* queue pending timers and reschedule them */ |
1043 | /* queue pending timers and reschedule them */ |
|
|
1044 | timers_reify (EV_A); /* relative timers called last */ |
562 | periodics_reify (); /* absolute timers first */ |
1045 | periodics_reify (EV_A); /* absolute timers called first */ |
563 | timers_reify (); /* relative timers second */ |
|
|
564 | |
1046 | |
565 | /* queue idle watchers unless io or timers are pending */ |
1047 | /* queue idle watchers unless io or timers are pending */ |
566 | if (!pendingcnt) |
1048 | if (!pendingcnt) |
567 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
1049 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
568 | |
1050 | |
569 | /* queue check and possibly idle watchers */ |
1051 | /* queue check watchers, to be executed first */ |
|
|
1052 | if (checkcnt) |
570 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1053 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
571 | |
1054 | |
572 | call_pending (); |
1055 | call_pending (EV_A); |
573 | } |
1056 | } |
574 | while (!ev_loop_done); |
1057 | while (activecnt && !loop_done); |
575 | |
1058 | |
576 | if (ev_loop_done != 2) |
1059 | if (loop_done != 2) |
577 | ev_loop_done = 0; |
1060 | loop_done = 0; |
|
|
1061 | } |
|
|
1062 | |
|
|
1063 | void |
|
|
1064 | ev_unloop (EV_P_ int how) |
|
|
1065 | { |
|
|
1066 | loop_done = how; |
578 | } |
1067 | } |
579 | |
1068 | |
580 | /*****************************************************************************/ |
1069 | /*****************************************************************************/ |
581 | |
1070 | |
582 | static void |
1071 | inline void |
583 | wlist_add (WL *head, WL elem) |
1072 | wlist_add (WL *head, WL elem) |
584 | { |
1073 | { |
585 | elem->next = *head; |
1074 | elem->next = *head; |
586 | *head = elem; |
1075 | *head = elem; |
587 | } |
1076 | } |
588 | |
1077 | |
589 | static void |
1078 | inline void |
590 | wlist_del (WL *head, WL elem) |
1079 | wlist_del (WL *head, WL elem) |
591 | { |
1080 | { |
592 | while (*head) |
1081 | while (*head) |
593 | { |
1082 | { |
594 | if (*head == elem) |
1083 | if (*head == elem) |
… | |
… | |
599 | |
1088 | |
600 | head = &(*head)->next; |
1089 | head = &(*head)->next; |
601 | } |
1090 | } |
602 | } |
1091 | } |
603 | |
1092 | |
604 | static void |
1093 | inline void |
|
|
1094 | ev_clear_pending (EV_P_ W w) |
|
|
1095 | { |
|
|
1096 | if (w->pending) |
|
|
1097 | { |
|
|
1098 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
|
|
1099 | w->pending = 0; |
|
|
1100 | } |
|
|
1101 | } |
|
|
1102 | |
|
|
1103 | inline void |
605 | ev_start (W w, int active) |
1104 | ev_start (EV_P_ W w, int active) |
606 | { |
1105 | { |
607 | w->pending = 0; |
1106 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1107 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1108 | |
608 | w->active = active; |
1109 | w->active = active; |
|
|
1110 | ev_ref (EV_A); |
609 | } |
1111 | } |
610 | |
1112 | |
611 | static void |
1113 | inline void |
612 | ev_stop (W w) |
1114 | ev_stop (EV_P_ W w) |
613 | { |
1115 | { |
614 | if (w->pending) |
1116 | ev_unref (EV_A); |
615 | pendings [w->pending - 1].w = 0; |
|
|
616 | |
|
|
617 | w->active = 0; |
1117 | w->active = 0; |
618 | } |
1118 | } |
619 | |
1119 | |
620 | /*****************************************************************************/ |
1120 | /*****************************************************************************/ |
621 | |
1121 | |
622 | void |
1122 | void |
623 | evio_start (struct ev_io *w) |
1123 | ev_io_start (EV_P_ struct ev_io *w) |
624 | { |
1124 | { |
|
|
1125 | int fd = w->fd; |
|
|
1126 | |
625 | if (ev_is_active (w)) |
1127 | if (ev_is_active (w)) |
626 | return; |
1128 | return; |
627 | |
1129 | |
628 | int fd = w->fd; |
1130 | assert (("ev_io_start called with negative fd", fd >= 0)); |
629 | |
1131 | |
630 | ev_start ((W)w, 1); |
1132 | ev_start (EV_A_ (W)w, 1); |
631 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1133 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
632 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1134 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
633 | |
1135 | |
634 | ++fdchangecnt; |
1136 | fd_change (EV_A_ fd); |
635 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
636 | fdchanges [fdchangecnt - 1] = fd; |
|
|
637 | } |
1137 | } |
638 | |
1138 | |
639 | void |
1139 | void |
640 | evio_stop (struct ev_io *w) |
1140 | ev_io_stop (EV_P_ struct ev_io *w) |
641 | { |
1141 | { |
|
|
1142 | ev_clear_pending (EV_A_ (W)w); |
642 | if (!ev_is_active (w)) |
1143 | if (!ev_is_active (w)) |
643 | return; |
1144 | return; |
644 | |
1145 | |
645 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1146 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
646 | ev_stop ((W)w); |
1147 | ev_stop (EV_A_ (W)w); |
647 | |
1148 | |
648 | ++fdchangecnt; |
1149 | fd_change (EV_A_ w->fd); |
649 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
650 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
651 | } |
1150 | } |
652 | |
1151 | |
653 | |
|
|
654 | void |
1152 | void |
655 | evtimer_start (struct ev_timer *w) |
1153 | ev_timer_start (EV_P_ struct ev_timer *w) |
656 | { |
1154 | { |
657 | if (ev_is_active (w)) |
1155 | if (ev_is_active (w)) |
658 | return; |
1156 | return; |
659 | |
1157 | |
660 | w->at += now; |
1158 | ((WT)w)->at += mn_now; |
661 | |
1159 | |
662 | assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); |
1160 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
663 | |
1161 | |
664 | ev_start ((W)w, ++timercnt); |
1162 | ev_start (EV_A_ (W)w, ++timercnt); |
665 | array_needsize (timers, timermax, timercnt, ); |
1163 | array_needsize (timers, timermax, timercnt, ); |
666 | timers [timercnt - 1] = w; |
1164 | timers [timercnt - 1] = w; |
667 | upheap ((WT *)timers, timercnt - 1); |
1165 | upheap ((WT *)timers, timercnt - 1); |
668 | } |
|
|
669 | |
1166 | |
|
|
1167 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1168 | } |
|
|
1169 | |
670 | void |
1170 | void |
671 | evtimer_stop (struct ev_timer *w) |
1171 | ev_timer_stop (EV_P_ struct ev_timer *w) |
672 | { |
1172 | { |
|
|
1173 | ev_clear_pending (EV_A_ (W)w); |
673 | if (!ev_is_active (w)) |
1174 | if (!ev_is_active (w)) |
674 | return; |
1175 | return; |
675 | |
1176 | |
|
|
1177 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1178 | |
676 | if (w->active < timercnt--) |
1179 | if (((W)w)->active < timercnt--) |
677 | { |
1180 | { |
678 | timers [w->active - 1] = timers [timercnt]; |
1181 | timers [((W)w)->active - 1] = timers [timercnt]; |
679 | downheap ((WT *)timers, timercnt, w->active - 1); |
1182 | downheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
680 | } |
1183 | } |
681 | |
1184 | |
|
|
1185 | ((WT)w)->at = w->repeat; |
|
|
1186 | |
682 | ev_stop ((W)w); |
1187 | ev_stop (EV_A_ (W)w); |
683 | } |
1188 | } |
684 | |
1189 | |
685 | void |
1190 | void |
686 | evperiodic_start (struct ev_periodic *w) |
1191 | ev_timer_again (EV_P_ struct ev_timer *w) |
687 | { |
1192 | { |
688 | if (ev_is_active (w)) |
1193 | if (ev_is_active (w)) |
689 | return; |
1194 | { |
|
|
1195 | if (w->repeat) |
|
|
1196 | { |
|
|
1197 | ((WT)w)->at = mn_now + w->repeat; |
|
|
1198 | downheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
|
|
1199 | } |
|
|
1200 | else |
|
|
1201 | ev_timer_stop (EV_A_ w); |
|
|
1202 | } |
|
|
1203 | else if (w->repeat) |
|
|
1204 | ev_timer_start (EV_A_ w); |
|
|
1205 | } |
690 | |
1206 | |
691 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
1207 | void |
|
|
1208 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
|
|
1209 | { |
|
|
1210 | if (ev_is_active (w)) |
|
|
1211 | return; |
|
|
1212 | |
|
|
1213 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
692 | |
1214 | |
693 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1215 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
694 | if (w->interval) |
1216 | if (w->interval) |
695 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
1217 | ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; |
696 | |
1218 | |
697 | ev_start ((W)w, ++periodiccnt); |
1219 | ev_start (EV_A_ (W)w, ++periodiccnt); |
698 | array_needsize (periodics, periodicmax, periodiccnt, ); |
1220 | array_needsize (periodics, periodicmax, periodiccnt, ); |
699 | periodics [periodiccnt - 1] = w; |
1221 | periodics [periodiccnt - 1] = w; |
700 | upheap ((WT *)periodics, periodiccnt - 1); |
1222 | upheap ((WT *)periodics, periodiccnt - 1); |
701 | } |
|
|
702 | |
1223 | |
|
|
1224 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1225 | } |
|
|
1226 | |
703 | void |
1227 | void |
704 | evperiodic_stop (struct ev_periodic *w) |
1228 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
705 | { |
1229 | { |
|
|
1230 | ev_clear_pending (EV_A_ (W)w); |
706 | if (!ev_is_active (w)) |
1231 | if (!ev_is_active (w)) |
707 | return; |
1232 | return; |
708 | |
1233 | |
|
|
1234 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1235 | |
709 | if (w->active < periodiccnt--) |
1236 | if (((W)w)->active < periodiccnt--) |
710 | { |
1237 | { |
711 | periodics [w->active - 1] = periodics [periodiccnt]; |
1238 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
712 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
1239 | downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
713 | } |
1240 | } |
714 | |
1241 | |
715 | ev_stop ((W)w); |
1242 | ev_stop (EV_A_ (W)w); |
716 | } |
1243 | } |
717 | |
1244 | |
718 | void |
1245 | void |
719 | evsignal_start (struct ev_signal *w) |
1246 | ev_idle_start (EV_P_ struct ev_idle *w) |
720 | { |
1247 | { |
721 | if (ev_is_active (w)) |
1248 | if (ev_is_active (w)) |
722 | return; |
1249 | return; |
723 | |
1250 | |
|
|
1251 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1252 | array_needsize (idles, idlemax, idlecnt, ); |
|
|
1253 | idles [idlecnt - 1] = w; |
|
|
1254 | } |
|
|
1255 | |
|
|
1256 | void |
|
|
1257 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1258 | { |
|
|
1259 | ev_clear_pending (EV_A_ (W)w); |
|
|
1260 | if (ev_is_active (w)) |
|
|
1261 | return; |
|
|
1262 | |
|
|
1263 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
|
|
1264 | ev_stop (EV_A_ (W)w); |
|
|
1265 | } |
|
|
1266 | |
|
|
1267 | void |
|
|
1268 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1269 | { |
|
|
1270 | if (ev_is_active (w)) |
|
|
1271 | return; |
|
|
1272 | |
|
|
1273 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1274 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
1275 | prepares [preparecnt - 1] = w; |
|
|
1276 | } |
|
|
1277 | |
|
|
1278 | void |
|
|
1279 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1280 | { |
|
|
1281 | ev_clear_pending (EV_A_ (W)w); |
|
|
1282 | if (ev_is_active (w)) |
|
|
1283 | return; |
|
|
1284 | |
|
|
1285 | prepares [((W)w)->active - 1] = prepares [--preparecnt]; |
|
|
1286 | ev_stop (EV_A_ (W)w); |
|
|
1287 | } |
|
|
1288 | |
|
|
1289 | void |
|
|
1290 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1291 | { |
|
|
1292 | if (ev_is_active (w)) |
|
|
1293 | return; |
|
|
1294 | |
|
|
1295 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1296 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
1297 | checks [checkcnt - 1] = w; |
|
|
1298 | } |
|
|
1299 | |
|
|
1300 | void |
|
|
1301 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1302 | { |
|
|
1303 | ev_clear_pending (EV_A_ (W)w); |
|
|
1304 | if (ev_is_active (w)) |
|
|
1305 | return; |
|
|
1306 | |
|
|
1307 | checks [((W)w)->active - 1] = checks [--checkcnt]; |
|
|
1308 | ev_stop (EV_A_ (W)w); |
|
|
1309 | } |
|
|
1310 | |
|
|
1311 | #ifndef SA_RESTART |
|
|
1312 | # define SA_RESTART 0 |
|
|
1313 | #endif |
|
|
1314 | |
|
|
1315 | void |
|
|
1316 | ev_signal_start (EV_P_ struct ev_signal *w) |
|
|
1317 | { |
|
|
1318 | #if EV_MULTIPLICITY |
|
|
1319 | assert (("signal watchers are only supported in the default loop", loop == default_loop)); |
|
|
1320 | #endif |
|
|
1321 | if (ev_is_active (w)) |
|
|
1322 | return; |
|
|
1323 | |
|
|
1324 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1325 | |
724 | ev_start ((W)w, 1); |
1326 | ev_start (EV_A_ (W)w, 1); |
725 | array_needsize (signals, signalmax, w->signum, signals_init); |
1327 | array_needsize (signals, signalmax, w->signum, signals_init); |
726 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1328 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
727 | |
1329 | |
728 | if (!w->next) |
1330 | if (!((WL)w)->next) |
729 | { |
1331 | { |
|
|
1332 | #if WIN32 |
|
|
1333 | signal (w->signum, sighandler); |
|
|
1334 | #else |
730 | struct sigaction sa; |
1335 | struct sigaction sa; |
731 | sa.sa_handler = sighandler; |
1336 | sa.sa_handler = sighandler; |
732 | sigfillset (&sa.sa_mask); |
1337 | sigfillset (&sa.sa_mask); |
733 | sa.sa_flags = 0; |
1338 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
734 | sigaction (w->signum, &sa, 0); |
1339 | sigaction (w->signum, &sa, 0); |
|
|
1340 | #endif |
735 | } |
1341 | } |
736 | } |
1342 | } |
737 | |
1343 | |
738 | void |
1344 | void |
739 | evsignal_stop (struct ev_signal *w) |
1345 | ev_signal_stop (EV_P_ struct ev_signal *w) |
740 | { |
1346 | { |
|
|
1347 | ev_clear_pending (EV_A_ (W)w); |
741 | if (!ev_is_active (w)) |
1348 | if (!ev_is_active (w)) |
742 | return; |
1349 | return; |
743 | |
1350 | |
744 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1351 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
745 | ev_stop ((W)w); |
1352 | ev_stop (EV_A_ (W)w); |
746 | |
1353 | |
747 | if (!signals [w->signum - 1].head) |
1354 | if (!signals [w->signum - 1].head) |
748 | signal (w->signum, SIG_DFL); |
1355 | signal (w->signum, SIG_DFL); |
749 | } |
1356 | } |
750 | |
1357 | |
751 | void evidle_start (struct ev_idle *w) |
1358 | void |
|
|
1359 | ev_child_start (EV_P_ struct ev_child *w) |
752 | { |
1360 | { |
|
|
1361 | #if EV_MULTIPLICITY |
|
|
1362 | assert (("child watchers are only supported in the default loop", loop == default_loop)); |
|
|
1363 | #endif |
753 | if (ev_is_active (w)) |
1364 | if (ev_is_active (w)) |
754 | return; |
1365 | return; |
755 | |
1366 | |
756 | ev_start ((W)w, ++idlecnt); |
1367 | ev_start (EV_A_ (W)w, 1); |
757 | array_needsize (idles, idlemax, idlecnt, ); |
1368 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
758 | idles [idlecnt - 1] = w; |
|
|
759 | } |
1369 | } |
760 | |
1370 | |
761 | void evidle_stop (struct ev_idle *w) |
1371 | void |
|
|
1372 | ev_child_stop (EV_P_ struct ev_child *w) |
762 | { |
1373 | { |
763 | idles [w->active - 1] = idles [--idlecnt]; |
1374 | ev_clear_pending (EV_A_ (W)w); |
764 | ev_stop ((W)w); |
|
|
765 | } |
|
|
766 | |
|
|
767 | void evcheck_start (struct ev_check *w) |
|
|
768 | { |
|
|
769 | if (ev_is_active (w)) |
1375 | if (ev_is_active (w)) |
770 | return; |
1376 | return; |
771 | |
1377 | |
772 | ev_start ((W)w, ++checkcnt); |
1378 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
773 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
774 | checks [checkcnt - 1] = w; |
|
|
775 | } |
|
|
776 | |
|
|
777 | void evcheck_stop (struct ev_check *w) |
|
|
778 | { |
|
|
779 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
780 | ev_stop ((W)w); |
1379 | ev_stop (EV_A_ (W)w); |
781 | } |
1380 | } |
782 | |
1381 | |
783 | /*****************************************************************************/ |
1382 | /*****************************************************************************/ |
784 | |
1383 | |
785 | #if 0 |
1384 | struct ev_once |
786 | |
1385 | { |
787 | struct ev_io wio; |
1386 | struct ev_io io; |
788 | |
|
|
789 | static void |
|
|
790 | sin_cb (struct ev_io *w, int revents) |
|
|
791 | { |
|
|
792 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
793 | } |
|
|
794 | |
|
|
795 | static void |
|
|
796 | ocb (struct ev_timer *w, int revents) |
|
|
797 | { |
|
|
798 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
799 | evtimer_stop (w); |
|
|
800 | evtimer_start (w); |
|
|
801 | } |
|
|
802 | |
|
|
803 | static void |
|
|
804 | scb (struct ev_signal *w, int revents) |
|
|
805 | { |
|
|
806 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
807 | evio_stop (&wio); |
|
|
808 | evio_start (&wio); |
|
|
809 | } |
|
|
810 | |
|
|
811 | static void |
|
|
812 | gcb (struct ev_signal *w, int revents) |
|
|
813 | { |
|
|
814 | fprintf (stderr, "generic %x\n", revents); |
|
|
815 | |
|
|
816 | } |
|
|
817 | |
|
|
818 | int main (void) |
|
|
819 | { |
|
|
820 | ev_init (0); |
|
|
821 | |
|
|
822 | evio_init (&wio, sin_cb, 0, EV_READ); |
|
|
823 | evio_start (&wio); |
|
|
824 | |
|
|
825 | struct ev_timer t[10000]; |
|
|
826 | |
|
|
827 | #if 0 |
|
|
828 | int i; |
|
|
829 | for (i = 0; i < 10000; ++i) |
|
|
830 | { |
|
|
831 | struct ev_timer *w = t + i; |
|
|
832 | evw_init (w, ocb, i); |
|
|
833 | evtimer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
834 | evtimer_start (w); |
|
|
835 | if (drand48 () < 0.5) |
|
|
836 | evtimer_stop (w); |
|
|
837 | } |
|
|
838 | #endif |
|
|
839 | |
|
|
840 | struct ev_timer t1; |
1387 | struct ev_timer to; |
841 | evtimer_init (&t1, ocb, 5, 10); |
1388 | void (*cb)(int revents, void *arg); |
842 | evtimer_start (&t1); |
1389 | void *arg; |
|
|
1390 | }; |
843 | |
1391 | |
844 | struct ev_signal sig; |
1392 | static void |
845 | evsignal_init (&sig, scb, SIGQUIT); |
1393 | once_cb (EV_P_ struct ev_once *once, int revents) |
846 | evsignal_start (&sig); |
1394 | { |
|
|
1395 | void (*cb)(int revents, void *arg) = once->cb; |
|
|
1396 | void *arg = once->arg; |
847 | |
1397 | |
848 | struct ev_check cw; |
1398 | ev_io_stop (EV_A_ &once->io); |
849 | evcheck_init (&cw, gcb); |
1399 | ev_timer_stop (EV_A_ &once->to); |
850 | evcheck_start (&cw); |
1400 | free (once); |
851 | |
1401 | |
852 | struct ev_idle iw; |
1402 | cb (revents, arg); |
853 | evidle_init (&iw, gcb); |
|
|
854 | evidle_start (&iw); |
|
|
855 | |
|
|
856 | ev_loop (0); |
|
|
857 | |
|
|
858 | return 0; |
|
|
859 | } |
1403 | } |
860 | |
1404 | |
861 | #endif |
1405 | static void |
|
|
1406 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
|
|
1407 | { |
|
|
1408 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
|
|
1409 | } |
862 | |
1410 | |
|
|
1411 | static void |
|
|
1412 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
|
|
1413 | { |
|
|
1414 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
|
|
1415 | } |
863 | |
1416 | |
|
|
1417 | void |
|
|
1418 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
|
|
1419 | { |
|
|
1420 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
864 | |
1421 | |
|
|
1422 | if (!once) |
|
|
1423 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
|
|
1424 | else |
|
|
1425 | { |
|
|
1426 | once->cb = cb; |
|
|
1427 | once->arg = arg; |
865 | |
1428 | |
|
|
1429 | ev_watcher_init (&once->io, once_cb_io); |
|
|
1430 | if (fd >= 0) |
|
|
1431 | { |
|
|
1432 | ev_io_set (&once->io, fd, events); |
|
|
1433 | ev_io_start (EV_A_ &once->io); |
|
|
1434 | } |
|
|
1435 | |
|
|
1436 | ev_watcher_init (&once->to, once_cb_to); |
|
|
1437 | if (timeout >= 0.) |
|
|
1438 | { |
|
|
1439 | ev_timer_set (&once->to, timeout, 0.); |
|
|
1440 | ev_timer_start (EV_A_ &once->to); |
|
|
1441 | } |
|
|
1442 | } |
|
|
1443 | } |
|
|
1444 | |