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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 | |
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75 | /**/ |
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76 | |
14 | #ifndef HAVE_MONOTONIC |
77 | #ifndef EV_USE_MONOTONIC |
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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_REALTIME |
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98 | # define EV_USE_REALTIME 1 |
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99 | #endif |
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100 | |
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101 | /**/ |
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102 | |
15 | # ifdef CLOCK_MONOTONIC |
103 | #ifndef CLOCK_MONOTONIC |
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104 | # undef EV_USE_MONOTONIC |
16 | # define HAVE_MONOTONIC 1 |
105 | # define EV_USE_MONOTONIC 0 |
17 | # endif |
106 | #endif |
18 | #endif |
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19 | |
107 | |
20 | #ifndef HAVE_SELECT |
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21 | # define HAVE_SELECT 1 |
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22 | #endif |
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23 | |
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24 | #ifndef HAVE_EPOLL |
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25 | # define HAVE_EPOLL 0 |
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26 | #endif |
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27 | |
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28 | #ifndef HAVE_REALTIME |
108 | #ifndef CLOCK_REALTIME |
29 | # define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
109 | # undef EV_USE_REALTIME |
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110 | # define EV_USE_REALTIME 0 |
30 | #endif |
111 | #endif |
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112 | |
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113 | /**/ |
31 | |
114 | |
32 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
115 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
33 | #define MAX_BLOCKTIME 60. |
116 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ |
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117 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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118 | /*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ |
34 | |
119 | |
35 | #include "ev.h" |
120 | #include "ev.h" |
36 | |
121 | |
37 | struct ev_watcher { |
122 | #if __GNUC__ >= 3 |
38 | EV_WATCHER (ev_watcher); |
123 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
39 | }; |
124 | # define inline inline |
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125 | #else |
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126 | # define expect(expr,value) (expr) |
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127 | # define inline static |
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128 | #endif |
40 | |
129 | |
41 | struct ev_watcher_list { |
130 | #define expect_false(expr) expect ((expr) != 0, 0) |
42 | EV_WATCHER_LIST (ev_watcher_list); |
131 | #define expect_true(expr) expect ((expr) != 0, 1) |
43 | }; |
132 | |
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133 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
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134 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
44 | |
135 | |
45 | typedef struct ev_watcher *W; |
136 | typedef struct ev_watcher *W; |
46 | typedef struct ev_watcher_list *WL; |
137 | typedef struct ev_watcher_list *WL; |
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138 | typedef struct ev_watcher_time *WT; |
47 | |
139 | |
48 | static ev_tstamp now, diff; /* monotonic clock */ |
140 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
49 | ev_tstamp ev_now; |
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50 | int ev_method; |
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51 | |
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52 | static int have_monotonic; /* runtime */ |
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53 | |
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54 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
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55 | static void (*method_modify)(int fd, int oev, int nev); |
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56 | static void (*method_poll)(ev_tstamp timeout); |
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57 | |
141 | |
58 | /*****************************************************************************/ |
142 | /*****************************************************************************/ |
59 | |
143 | |
60 | ev_tstamp |
144 | typedef struct |
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145 | { |
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146 | struct ev_watcher_list *head; |
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147 | unsigned char events; |
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148 | unsigned char reify; |
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149 | } ANFD; |
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150 | |
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151 | typedef struct |
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152 | { |
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153 | W w; |
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154 | int events; |
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155 | } ANPENDING; |
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156 | |
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157 | #if EV_MULTIPLICITY |
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158 | |
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159 | struct ev_loop |
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160 | { |
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161 | # define VAR(name,decl) decl; |
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162 | # include "ev_vars.h" |
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163 | }; |
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164 | # undef VAR |
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165 | # include "ev_wrap.h" |
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166 | |
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167 | #else |
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168 | |
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169 | # define VAR(name,decl) static decl; |
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170 | # include "ev_vars.h" |
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171 | # undef VAR |
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172 | |
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173 | #endif |
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174 | |
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175 | /*****************************************************************************/ |
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176 | |
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177 | inline ev_tstamp |
61 | ev_time (void) |
178 | ev_time (void) |
62 | { |
179 | { |
63 | #if HAVE_REALTIME |
180 | #if EV_USE_REALTIME |
64 | struct timespec ts; |
181 | struct timespec ts; |
65 | clock_gettime (CLOCK_REALTIME, &ts); |
182 | clock_gettime (CLOCK_REALTIME, &ts); |
66 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
183 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
67 | #else |
184 | #else |
68 | struct timeval tv; |
185 | struct timeval tv; |
69 | gettimeofday (&tv, 0); |
186 | gettimeofday (&tv, 0); |
70 | return tv.tv_sec + tv.tv_usec * 1e-6; |
187 | return tv.tv_sec + tv.tv_usec * 1e-6; |
71 | #endif |
188 | #endif |
72 | } |
189 | } |
73 | |
190 | |
74 | static ev_tstamp |
191 | inline ev_tstamp |
75 | get_clock (void) |
192 | get_clock (void) |
76 | { |
193 | { |
77 | #if HAVE_MONOTONIC |
194 | #if EV_USE_MONOTONIC |
78 | if (have_monotonic) |
195 | if (expect_true (have_monotonic)) |
79 | { |
196 | { |
80 | struct timespec ts; |
197 | struct timespec ts; |
81 | clock_gettime (CLOCK_MONOTONIC, &ts); |
198 | clock_gettime (CLOCK_MONOTONIC, &ts); |
82 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
199 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
83 | } |
200 | } |
84 | #endif |
201 | #endif |
85 | |
202 | |
86 | return ev_time (); |
203 | return ev_time (); |
87 | } |
204 | } |
88 | |
205 | |
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206 | ev_tstamp |
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207 | ev_now (EV_P) |
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208 | { |
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209 | return rt_now; |
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210 | } |
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211 | |
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212 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
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213 | |
89 | #define array_needsize(base,cur,cnt,init) \ |
214 | #define array_needsize(base,cur,cnt,init) \ |
90 | if ((cnt) > cur) \ |
215 | if (expect_false ((cnt) > cur)) \ |
91 | { \ |
216 | { \ |
92 | int newcnt = cur ? cur << 1 : 16; \ |
217 | int newcnt = cur; \ |
93 | fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\ |
218 | do \ |
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219 | { \ |
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220 | newcnt = array_roundsize (base, newcnt << 1); \ |
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221 | } \ |
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222 | while ((cnt) > newcnt); \ |
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223 | \ |
94 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
224 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
95 | init (base + cur, newcnt - cur); \ |
225 | init (base + cur, newcnt - cur); \ |
96 | cur = newcnt; \ |
226 | cur = newcnt; \ |
97 | } |
227 | } |
98 | |
228 | |
99 | /*****************************************************************************/ |
229 | /*****************************************************************************/ |
100 | |
230 | |
101 | typedef struct |
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102 | { |
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103 | struct ev_io *head; |
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104 | unsigned char wev, rev; /* want, received event set */ |
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105 | } ANFD; |
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106 | |
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107 | static ANFD *anfds; |
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108 | static int anfdmax; |
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109 | |
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110 | static int *fdchanges; |
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111 | static int fdchangemax, fdchangecnt; |
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112 | |
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113 | static void |
231 | static void |
114 | anfds_init (ANFD *base, int count) |
232 | anfds_init (ANFD *base, int count) |
115 | { |
233 | { |
116 | while (count--) |
234 | while (count--) |
117 | { |
235 | { |
118 | base->head = 0; |
236 | base->head = 0; |
119 | base->wev = base->rev = EV_NONE; |
237 | base->events = EV_NONE; |
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238 | base->reify = 0; |
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239 | |
120 | ++base; |
240 | ++base; |
121 | } |
241 | } |
122 | } |
242 | } |
123 | |
243 | |
124 | typedef struct |
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125 | { |
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126 | W w; |
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127 | int events; |
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128 | } ANPENDING; |
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129 | |
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130 | static ANPENDING *pendings; |
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131 | static int pendingmax, pendingcnt; |
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132 | |
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133 | static void |
244 | static void |
134 | event (W w, int events) |
245 | event (EV_P_ W w, int events) |
135 | { |
246 | { |
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247 | if (w->pending) |
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248 | { |
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249 | pendings [ABSPRI (w)][w->pending - 1].events |= events; |
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250 | return; |
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251 | } |
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252 | |
136 | w->pending = ++pendingcnt; |
253 | w->pending = ++pendingcnt [ABSPRI (w)]; |
137 | array_needsize (pendings, pendingmax, pendingcnt, ); |
254 | array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); |
138 | pendings [pendingcnt - 1].w = w; |
255 | pendings [ABSPRI (w)][w->pending - 1].w = w; |
139 | pendings [pendingcnt - 1].events = events; |
256 | pendings [ABSPRI (w)][w->pending - 1].events = events; |
140 | } |
257 | } |
141 | |
258 | |
142 | static void |
259 | static void |
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260 | queue_events (EV_P_ W *events, int eventcnt, int type) |
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261 | { |
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262 | int i; |
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263 | |
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264 | for (i = 0; i < eventcnt; ++i) |
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265 | event (EV_A_ events [i], type); |
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266 | } |
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267 | |
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268 | static void |
143 | fd_event (int fd, int events) |
269 | fd_event (EV_P_ int fd, int events) |
144 | { |
270 | { |
145 | ANFD *anfd = anfds + fd; |
271 | ANFD *anfd = anfds + fd; |
146 | struct ev_io *w; |
272 | struct ev_io *w; |
147 | |
273 | |
148 | for (w = anfd->head; w; w = w->next) |
274 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
149 | { |
275 | { |
150 | int ev = w->events & events; |
276 | int ev = w->events & events; |
151 | |
277 | |
152 | if (ev) |
278 | if (ev) |
153 | event ((W)w, ev); |
279 | event (EV_A_ (W)w, ev); |
154 | } |
280 | } |
155 | } |
281 | } |
156 | |
282 | |
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283 | /*****************************************************************************/ |
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284 | |
157 | static void |
285 | static void |
158 | queue_events (W *events, int eventcnt, int type) |
286 | fd_reify (EV_P) |
159 | { |
287 | { |
160 | int i; |
288 | int i; |
161 | |
289 | |
162 | for (i = 0; i < eventcnt; ++i) |
290 | for (i = 0; i < fdchangecnt; ++i) |
163 | event (events [i], type); |
291 | { |
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292 | int fd = fdchanges [i]; |
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293 | ANFD *anfd = anfds + fd; |
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294 | struct ev_io *w; |
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295 | |
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296 | int events = 0; |
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297 | |
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298 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
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299 | events |= w->events; |
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300 | |
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301 | anfd->reify = 0; |
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302 | |
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303 | if (anfd->events != events) |
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304 | { |
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305 | method_modify (EV_A_ fd, anfd->events, events); |
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306 | anfd->events = events; |
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307 | } |
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308 | } |
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309 | |
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310 | fdchangecnt = 0; |
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311 | } |
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312 | |
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313 | static void |
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314 | fd_change (EV_P_ int fd) |
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315 | { |
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316 | if (anfds [fd].reify || fdchangecnt < 0) |
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317 | return; |
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318 | |
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319 | anfds [fd].reify = 1; |
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320 | |
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321 | ++fdchangecnt; |
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322 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
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323 | fdchanges [fdchangecnt - 1] = fd; |
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324 | } |
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325 | |
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326 | static void |
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327 | fd_kill (EV_P_ int fd) |
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328 | { |
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329 | struct ev_io *w; |
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330 | |
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331 | while ((w = (struct ev_io *)anfds [fd].head)) |
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332 | { |
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333 | ev_io_stop (EV_A_ w); |
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334 | event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
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335 | } |
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336 | } |
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337 | |
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338 | /* called on EBADF to verify fds */ |
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339 | static void |
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340 | fd_ebadf (EV_P) |
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341 | { |
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342 | int fd; |
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343 | |
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344 | for (fd = 0; fd < anfdmax; ++fd) |
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345 | if (anfds [fd].events) |
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346 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
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347 | fd_kill (EV_A_ fd); |
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348 | } |
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349 | |
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350 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
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351 | static void |
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352 | fd_enomem (EV_P) |
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353 | { |
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354 | int fd = anfdmax; |
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355 | |
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356 | while (fd--) |
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357 | if (anfds [fd].events) |
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358 | { |
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359 | close (fd); |
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360 | fd_kill (EV_A_ fd); |
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361 | return; |
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362 | } |
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363 | } |
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364 | |
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365 | /* susually called after fork if method needs to re-arm all fds from scratch */ |
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366 | static void |
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367 | fd_rearm_all (EV_P) |
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368 | { |
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369 | int fd; |
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370 | |
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371 | /* this should be highly optimised to not do anything but set a flag */ |
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372 | for (fd = 0; fd < anfdmax; ++fd) |
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373 | if (anfds [fd].events) |
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374 | { |
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375 | anfds [fd].events = 0; |
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376 | fd_change (EV_A_ fd); |
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377 | } |
164 | } |
378 | } |
165 | |
379 | |
166 | /*****************************************************************************/ |
380 | /*****************************************************************************/ |
167 | |
381 | |
168 | static struct ev_timer **atimers; |
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169 | static int atimermax, atimercnt; |
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170 | |
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171 | static struct ev_timer **rtimers; |
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172 | static int rtimermax, rtimercnt; |
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173 | |
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174 | static void |
382 | static void |
175 | upheap (struct ev_timer **timers, int k) |
383 | upheap (WT *heap, int k) |
176 | { |
384 | { |
177 | struct ev_timer *w = timers [k]; |
385 | WT w = heap [k]; |
178 | |
386 | |
179 | while (k && timers [k >> 1]->at > w->at) |
387 | while (k && heap [k >> 1]->at > w->at) |
180 | { |
388 | { |
181 | timers [k] = timers [k >> 1]; |
389 | heap [k] = heap [k >> 1]; |
182 | timers [k]->active = k + 1; |
390 | heap [k]->active = k + 1; |
183 | k >>= 1; |
391 | k >>= 1; |
184 | } |
392 | } |
185 | |
393 | |
186 | timers [k] = w; |
394 | heap [k] = w; |
187 | timers [k]->active = k + 1; |
395 | heap [k]->active = k + 1; |
188 | |
396 | |
189 | } |
397 | } |
190 | |
398 | |
191 | static void |
399 | static void |
192 | downheap (struct ev_timer **timers, int N, int k) |
400 | downheap (WT *heap, int N, int k) |
193 | { |
401 | { |
194 | struct ev_timer *w = timers [k]; |
402 | WT w = heap [k]; |
195 | |
403 | |
196 | while (k < (N >> 1)) |
404 | while (k < (N >> 1)) |
197 | { |
405 | { |
198 | int j = k << 1; |
406 | int j = k << 1; |
199 | |
407 | |
200 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
408 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
201 | ++j; |
409 | ++j; |
202 | |
410 | |
203 | if (w->at <= timers [j]->at) |
411 | if (w->at <= heap [j]->at) |
204 | break; |
412 | break; |
205 | |
413 | |
206 | timers [k] = timers [j]; |
414 | heap [k] = heap [j]; |
207 | timers [k]->active = k + 1; |
415 | heap [k]->active = k + 1; |
208 | k = j; |
416 | k = j; |
209 | } |
417 | } |
210 | |
418 | |
211 | timers [k] = w; |
419 | heap [k] = w; |
212 | timers [k]->active = k + 1; |
420 | heap [k]->active = k + 1; |
213 | } |
421 | } |
214 | |
422 | |
215 | /*****************************************************************************/ |
423 | /*****************************************************************************/ |
216 | |
424 | |
217 | typedef struct |
425 | typedef struct |
218 | { |
426 | { |
219 | struct ev_signal *head; |
427 | struct ev_watcher_list *head; |
220 | sig_atomic_t gotsig; |
428 | sig_atomic_t volatile gotsig; |
221 | } ANSIG; |
429 | } ANSIG; |
222 | |
430 | |
223 | static ANSIG *signals; |
431 | static ANSIG *signals; |
224 | static int signalmax; |
432 | static int signalmax; |
225 | |
433 | |
226 | static int sigpipe [2]; |
434 | static int sigpipe [2]; |
227 | static sig_atomic_t gotsig; |
435 | static sig_atomic_t volatile gotsig; |
228 | static struct ev_io sigev; |
436 | static struct ev_io sigev; |
229 | |
437 | |
230 | static void |
438 | static void |
231 | signals_init (ANSIG *base, int count) |
439 | signals_init (ANSIG *base, int count) |
232 | { |
440 | { |
233 | while (count--) |
441 | while (count--) |
234 | { |
442 | { |
235 | base->head = 0; |
443 | base->head = 0; |
236 | base->gotsig = 0; |
444 | base->gotsig = 0; |
|
|
445 | |
237 | ++base; |
446 | ++base; |
238 | } |
447 | } |
239 | } |
448 | } |
240 | |
449 | |
241 | static void |
450 | static void |
… | |
… | |
243 | { |
452 | { |
244 | signals [signum - 1].gotsig = 1; |
453 | signals [signum - 1].gotsig = 1; |
245 | |
454 | |
246 | if (!gotsig) |
455 | if (!gotsig) |
247 | { |
456 | { |
|
|
457 | int old_errno = errno; |
248 | gotsig = 1; |
458 | gotsig = 1; |
249 | write (sigpipe [1], &gotsig, 1); |
459 | write (sigpipe [1], &signum, 1); |
|
|
460 | errno = old_errno; |
250 | } |
461 | } |
251 | } |
462 | } |
252 | |
463 | |
253 | static void |
464 | static void |
254 | sigcb (struct ev_io *iow, int revents) |
465 | sigcb (EV_P_ struct ev_io *iow, int revents) |
255 | { |
466 | { |
256 | struct ev_signal *w; |
467 | struct ev_watcher_list *w; |
257 | int sig; |
468 | int signum; |
258 | |
469 | |
|
|
470 | read (sigpipe [0], &revents, 1); |
259 | gotsig = 0; |
471 | gotsig = 0; |
260 | read (sigpipe [0], &revents, 1); |
|
|
261 | |
472 | |
262 | for (sig = signalmax; sig--; ) |
473 | for (signum = signalmax; signum--; ) |
263 | if (signals [sig].gotsig) |
474 | if (signals [signum].gotsig) |
264 | { |
475 | { |
265 | signals [sig].gotsig = 0; |
476 | signals [signum].gotsig = 0; |
266 | |
477 | |
267 | for (w = signals [sig].head; w; w = w->next) |
478 | for (w = signals [signum].head; w; w = w->next) |
268 | event ((W)w, EV_SIGNAL); |
479 | event (EV_A_ (W)w, EV_SIGNAL); |
269 | } |
480 | } |
270 | } |
481 | } |
271 | |
482 | |
272 | static void |
483 | static void |
273 | siginit (void) |
484 | siginit (EV_P) |
274 | { |
485 | { |
|
|
486 | #ifndef WIN32 |
275 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
487 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
276 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
488 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
277 | |
489 | |
278 | /* rather than sort out wether we really need nb, set it */ |
490 | /* rather than sort out wether we really need nb, set it */ |
279 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
491 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
280 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
492 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
493 | #endif |
281 | |
494 | |
282 | evio_set (&sigev, sigpipe [0], EV_READ); |
495 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
283 | evio_start (&sigev); |
496 | ev_io_start (EV_A_ &sigev); |
|
|
497 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
284 | } |
498 | } |
285 | |
499 | |
286 | /*****************************************************************************/ |
500 | /*****************************************************************************/ |
287 | |
501 | |
288 | static struct ev_idle **idles; |
502 | #ifndef WIN32 |
289 | static int idlemax, idlecnt; |
|
|
290 | |
503 | |
291 | static struct ev_check **checks; |
504 | static struct ev_child *childs [PID_HASHSIZE]; |
292 | static int checkmax, checkcnt; |
505 | static struct ev_signal childev; |
|
|
506 | |
|
|
507 | #ifndef WCONTINUED |
|
|
508 | # define WCONTINUED 0 |
|
|
509 | #endif |
|
|
510 | |
|
|
511 | static void |
|
|
512 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
|
|
513 | { |
|
|
514 | struct ev_child *w; |
|
|
515 | |
|
|
516 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
517 | if (w->pid == pid || !w->pid) |
|
|
518 | { |
|
|
519 | w->priority = sw->priority; /* need to do it *now* */ |
|
|
520 | w->rpid = pid; |
|
|
521 | w->rstatus = status; |
|
|
522 | event (EV_A_ (W)w, EV_CHILD); |
|
|
523 | } |
|
|
524 | } |
|
|
525 | |
|
|
526 | static void |
|
|
527 | childcb (EV_P_ struct ev_signal *sw, int revents) |
|
|
528 | { |
|
|
529 | int pid, status; |
|
|
530 | |
|
|
531 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
|
|
532 | { |
|
|
533 | /* make sure we are called again until all childs have been reaped */ |
|
|
534 | event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
535 | |
|
|
536 | child_reap (EV_A_ sw, pid, pid, status); |
|
|
537 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
|
|
538 | } |
|
|
539 | } |
|
|
540 | |
|
|
541 | #endif |
293 | |
542 | |
294 | /*****************************************************************************/ |
543 | /*****************************************************************************/ |
295 | |
544 | |
|
|
545 | #if EV_USE_KQUEUE |
|
|
546 | # include "ev_kqueue.c" |
|
|
547 | #endif |
296 | #if HAVE_EPOLL |
548 | #if EV_USE_EPOLL |
297 | # include "ev_epoll.c" |
549 | # include "ev_epoll.c" |
298 | #endif |
550 | #endif |
|
|
551 | #if EV_USE_POLL |
|
|
552 | # include "ev_poll.c" |
|
|
553 | #endif |
299 | #if HAVE_SELECT |
554 | #if EV_USE_SELECT |
300 | # include "ev_select.c" |
555 | # include "ev_select.c" |
301 | #endif |
556 | #endif |
302 | |
557 | |
303 | int ev_init (int flags) |
558 | int |
|
|
559 | ev_version_major (void) |
304 | { |
560 | { |
|
|
561 | return EV_VERSION_MAJOR; |
|
|
562 | } |
|
|
563 | |
|
|
564 | int |
|
|
565 | ev_version_minor (void) |
|
|
566 | { |
|
|
567 | return EV_VERSION_MINOR; |
|
|
568 | } |
|
|
569 | |
|
|
570 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
571 | static int |
|
|
572 | enable_secure (void) |
|
|
573 | { |
|
|
574 | #ifdef WIN32 |
|
|
575 | return 0; |
|
|
576 | #else |
|
|
577 | return getuid () != geteuid () |
|
|
578 | || getgid () != getegid (); |
|
|
579 | #endif |
|
|
580 | } |
|
|
581 | |
|
|
582 | int |
|
|
583 | ev_method (EV_P) |
|
|
584 | { |
|
|
585 | return method; |
|
|
586 | } |
|
|
587 | |
|
|
588 | static void |
|
|
589 | loop_init (EV_P_ int methods) |
|
|
590 | { |
|
|
591 | if (!method) |
|
|
592 | { |
305 | #if HAVE_MONOTONIC |
593 | #if EV_USE_MONOTONIC |
306 | { |
594 | { |
307 | struct timespec ts; |
595 | struct timespec ts; |
308 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
596 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
309 | have_monotonic = 1; |
597 | have_monotonic = 1; |
310 | } |
598 | } |
311 | #endif |
599 | #endif |
312 | |
600 | |
313 | ev_now = ev_time (); |
601 | rt_now = ev_time (); |
314 | now = get_clock (); |
602 | mn_now = get_clock (); |
315 | diff = ev_now - now; |
603 | now_floor = mn_now; |
|
|
604 | rtmn_diff = rt_now - mn_now; |
316 | |
605 | |
|
|
606 | if (methods == EVMETHOD_AUTO) |
|
|
607 | if (!enable_secure () && getenv ("LIBEV_METHODS")) |
|
|
608 | methods = atoi (getenv ("LIBEV_METHODS")); |
|
|
609 | else |
|
|
610 | methods = EVMETHOD_ANY; |
|
|
611 | |
|
|
612 | method = 0; |
|
|
613 | #if EV_USE_KQUEUE |
|
|
614 | if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); |
|
|
615 | #endif |
|
|
616 | #if EV_USE_EPOLL |
|
|
617 | if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); |
|
|
618 | #endif |
|
|
619 | #if EV_USE_POLL |
|
|
620 | if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); |
|
|
621 | #endif |
|
|
622 | #if EV_USE_SELECT |
|
|
623 | if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); |
|
|
624 | #endif |
|
|
625 | } |
|
|
626 | } |
|
|
627 | |
|
|
628 | void |
|
|
629 | loop_destroy (EV_P) |
|
|
630 | { |
|
|
631 | #if EV_USE_KQUEUE |
|
|
632 | if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); |
|
|
633 | #endif |
|
|
634 | #if EV_USE_EPOLL |
|
|
635 | if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); |
|
|
636 | #endif |
|
|
637 | #if EV_USE_POLL |
|
|
638 | if (method == EVMETHOD_POLL ) poll_destroy (EV_A); |
|
|
639 | #endif |
|
|
640 | #if EV_USE_SELECT |
|
|
641 | if (method == EVMETHOD_SELECT) select_destroy (EV_A); |
|
|
642 | #endif |
|
|
643 | |
|
|
644 | method = 0; |
|
|
645 | /*TODO*/ |
|
|
646 | } |
|
|
647 | |
|
|
648 | void |
|
|
649 | loop_fork (EV_P) |
|
|
650 | { |
|
|
651 | /*TODO*/ |
|
|
652 | #if EV_USE_EPOLL |
|
|
653 | if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); |
|
|
654 | #endif |
|
|
655 | #if EV_USE_KQUEUE |
|
|
656 | if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); |
|
|
657 | #endif |
|
|
658 | } |
|
|
659 | |
|
|
660 | #if EV_MULTIPLICITY |
|
|
661 | struct ev_loop * |
|
|
662 | ev_loop_new (int methods) |
|
|
663 | { |
|
|
664 | struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); |
|
|
665 | |
|
|
666 | loop_init (EV_A_ methods); |
|
|
667 | |
|
|
668 | if (ev_method (EV_A)) |
|
|
669 | return loop; |
|
|
670 | |
|
|
671 | return 0; |
|
|
672 | } |
|
|
673 | |
|
|
674 | void |
|
|
675 | ev_loop_destroy (EV_P) |
|
|
676 | { |
|
|
677 | loop_destroy (EV_A); |
|
|
678 | free (loop); |
|
|
679 | } |
|
|
680 | |
|
|
681 | void |
|
|
682 | ev_loop_fork (EV_P) |
|
|
683 | { |
|
|
684 | loop_fork (EV_A); |
|
|
685 | } |
|
|
686 | |
|
|
687 | #endif |
|
|
688 | |
|
|
689 | #if EV_MULTIPLICITY |
|
|
690 | struct ev_loop default_loop_struct; |
|
|
691 | static struct ev_loop *default_loop; |
|
|
692 | |
|
|
693 | struct ev_loop * |
|
|
694 | #else |
|
|
695 | static int default_loop; |
|
|
696 | |
|
|
697 | int |
|
|
698 | #endif |
|
|
699 | ev_default_loop (int methods) |
|
|
700 | { |
|
|
701 | if (sigpipe [0] == sigpipe [1]) |
317 | if (pipe (sigpipe)) |
702 | if (pipe (sigpipe)) |
318 | return 0; |
703 | return 0; |
319 | |
704 | |
320 | ev_method = EVMETHOD_NONE; |
705 | if (!default_loop) |
321 | #if HAVE_EPOLL |
|
|
322 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
|
|
323 | #endif |
|
|
324 | #if HAVE_SELECT |
|
|
325 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
326 | #endif |
|
|
327 | |
|
|
328 | if (ev_method) |
|
|
329 | { |
706 | { |
|
|
707 | #if EV_MULTIPLICITY |
|
|
708 | struct ev_loop *loop = default_loop = &default_loop_struct; |
|
|
709 | #else |
|
|
710 | default_loop = 1; |
|
|
711 | #endif |
|
|
712 | |
|
|
713 | loop_init (EV_A_ methods); |
|
|
714 | |
|
|
715 | if (ev_method (EV_A)) |
|
|
716 | { |
330 | evw_init (&sigev, sigcb, 0); |
717 | ev_watcher_init (&sigev, sigcb); |
|
|
718 | ev_set_priority (&sigev, EV_MAXPRI); |
331 | siginit (); |
719 | siginit (EV_A); |
332 | } |
|
|
333 | |
720 | |
334 | return ev_method; |
721 | #ifndef WIN32 |
335 | } |
722 | ev_signal_init (&childev, childcb, SIGCHLD); |
336 | |
723 | ev_set_priority (&childev, EV_MAXPRI); |
337 | /*****************************************************************************/ |
724 | ev_signal_start (EV_A_ &childev); |
338 | |
725 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
339 | void ev_prefork (void) |
|
|
340 | { |
|
|
341 | /* nop */ |
|
|
342 | } |
|
|
343 | |
|
|
344 | void ev_postfork_parent (void) |
|
|
345 | { |
|
|
346 | /* nop */ |
|
|
347 | } |
|
|
348 | |
|
|
349 | void ev_postfork_child (void) |
|
|
350 | { |
|
|
351 | #if HAVE_EPOLL |
|
|
352 | if (ev_method == EVMETHOD_EPOLL) |
|
|
353 | epoll_postfork_child (); |
|
|
354 | #endif |
726 | #endif |
|
|
727 | } |
|
|
728 | else |
|
|
729 | default_loop = 0; |
|
|
730 | } |
355 | |
731 | |
|
|
732 | return default_loop; |
|
|
733 | } |
|
|
734 | |
|
|
735 | void |
|
|
736 | ev_default_destroy (void) |
|
|
737 | { |
|
|
738 | #if EV_MULTIPLICITY |
|
|
739 | struct ev_loop *loop = default_loop; |
|
|
740 | #endif |
|
|
741 | |
|
|
742 | ev_ref (EV_A); /* child watcher */ |
|
|
743 | ev_signal_stop (EV_A_ &childev); |
|
|
744 | |
|
|
745 | ev_ref (EV_A); /* signal watcher */ |
356 | evio_stop (&sigev); |
746 | ev_io_stop (EV_A_ &sigev); |
|
|
747 | |
|
|
748 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
749 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
750 | |
|
|
751 | loop_destroy (EV_A); |
|
|
752 | } |
|
|
753 | |
|
|
754 | void |
|
|
755 | ev_default_fork (void) |
|
|
756 | { |
|
|
757 | #if EV_MULTIPLICITY |
|
|
758 | struct ev_loop *loop = default_loop; |
|
|
759 | #endif |
|
|
760 | |
|
|
761 | loop_fork (EV_A); |
|
|
762 | |
|
|
763 | ev_io_stop (EV_A_ &sigev); |
357 | close (sigpipe [0]); |
764 | close (sigpipe [0]); |
358 | close (sigpipe [1]); |
765 | close (sigpipe [1]); |
359 | pipe (sigpipe); |
766 | pipe (sigpipe); |
|
|
767 | |
|
|
768 | ev_ref (EV_A); /* signal watcher */ |
360 | siginit (); |
769 | siginit (EV_A); |
361 | } |
770 | } |
362 | |
771 | |
363 | /*****************************************************************************/ |
772 | /*****************************************************************************/ |
364 | |
773 | |
365 | static void |
774 | static void |
366 | fd_reify (void) |
775 | call_pending (EV_P) |
367 | { |
776 | { |
368 | int i; |
777 | int pri; |
369 | |
778 | |
370 | for (i = 0; i < fdchangecnt; ++i) |
779 | for (pri = NUMPRI; pri--; ) |
371 | { |
780 | while (pendingcnt [pri]) |
372 | int fd = fdchanges [i]; |
|
|
373 | ANFD *anfd = anfds + fd; |
|
|
374 | struct ev_io *w; |
|
|
375 | |
|
|
376 | int wev = 0; |
|
|
377 | |
|
|
378 | for (w = anfd->head; w; w = w->next) |
|
|
379 | wev |= w->events; |
|
|
380 | |
|
|
381 | if (anfd->wev != wev) |
|
|
382 | { |
781 | { |
383 | method_modify (fd, anfd->wev, wev); |
782 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
384 | anfd->wev = wev; |
|
|
385 | } |
|
|
386 | } |
|
|
387 | |
783 | |
388 | fdchangecnt = 0; |
|
|
389 | } |
|
|
390 | |
|
|
391 | static void |
|
|
392 | call_pending () |
|
|
393 | { |
|
|
394 | int i; |
|
|
395 | |
|
|
396 | for (i = 0; i < pendingcnt; ++i) |
|
|
397 | { |
|
|
398 | ANPENDING *p = pendings + i; |
|
|
399 | |
|
|
400 | if (p->w) |
784 | if (p->w) |
401 | { |
785 | { |
402 | p->w->pending = 0; |
786 | p->w->pending = 0; |
403 | p->w->cb (p->w, p->events); |
787 | p->w->cb (EV_A_ p->w, p->events); |
404 | } |
788 | } |
405 | } |
789 | } |
406 | |
|
|
407 | pendingcnt = 0; |
|
|
408 | } |
790 | } |
409 | |
791 | |
410 | static void |
792 | static void |
411 | timers_reify (struct ev_timer **timers, int timercnt, ev_tstamp now) |
793 | timers_reify (EV_P) |
412 | { |
794 | { |
413 | while (timercnt && timers [0]->at <= now) |
795 | while (timercnt && timers [0]->at <= mn_now) |
414 | { |
796 | { |
415 | struct ev_timer *w = timers [0]; |
797 | struct ev_timer *w = timers [0]; |
|
|
798 | |
|
|
799 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
416 | |
800 | |
417 | /* first reschedule or stop timer */ |
801 | /* first reschedule or stop timer */ |
418 | if (w->repeat) |
802 | if (w->repeat) |
419 | { |
803 | { |
420 | if (w->is_abs) |
804 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
421 | w->at += floor ((now - w->at) / w->repeat + 1.) * w->repeat; |
|
|
422 | else |
|
|
423 | w->at = now + w->repeat; |
805 | w->at = mn_now + w->repeat; |
424 | |
|
|
425 | assert (w->at > now); |
|
|
426 | |
|
|
427 | downheap (timers, timercnt, 0); |
806 | downheap ((WT *)timers, timercnt, 0); |
428 | } |
807 | } |
429 | else |
808 | else |
|
|
809 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
810 | |
|
|
811 | event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
812 | } |
|
|
813 | } |
|
|
814 | |
|
|
815 | static void |
|
|
816 | periodics_reify (EV_P) |
|
|
817 | { |
|
|
818 | while (periodiccnt && periodics [0]->at <= rt_now) |
|
|
819 | { |
|
|
820 | struct ev_periodic *w = periodics [0]; |
|
|
821 | |
|
|
822 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
|
|
823 | |
|
|
824 | /* first reschedule or stop timer */ |
|
|
825 | if (w->interval) |
430 | { |
826 | { |
431 | evtimer_stop (w); /* nonrepeating: stop timer */ |
827 | w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; |
432 | --timercnt; /* maybe pass by reference instead? */ |
828 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now)); |
|
|
829 | downheap ((WT *)periodics, periodiccnt, 0); |
433 | } |
830 | } |
|
|
831 | else |
|
|
832 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
434 | |
833 | |
435 | event ((W)w, EV_TIMEOUT); |
834 | event (EV_A_ (W)w, EV_PERIODIC); |
436 | } |
835 | } |
437 | } |
836 | } |
438 | |
837 | |
439 | static void |
838 | static void |
440 | time_update () |
839 | periodics_reschedule (EV_P) |
441 | { |
840 | { |
442 | int i; |
841 | int i; |
443 | ev_now = ev_time (); |
|
|
444 | |
842 | |
445 | if (have_monotonic) |
843 | /* adjust periodics after time jump */ |
|
|
844 | for (i = 0; i < periodiccnt; ++i) |
446 | { |
845 | { |
447 | ev_tstamp odiff = diff; |
846 | struct ev_periodic *w = periodics [i]; |
448 | |
847 | |
449 | /* detecting time jumps is much more difficult */ |
848 | if (w->interval) |
450 | for (i = 2; --i; ) /* loop a few times, before making important decisions */ |
|
|
451 | { |
849 | { |
452 | now = get_clock (); |
850 | ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; |
453 | diff = ev_now - now; |
|
|
454 | |
851 | |
455 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
852 | if (fabs (diff) >= 1e-4) |
456 | return; /* all is well */ |
853 | { |
|
|
854 | ev_periodic_stop (EV_A_ w); |
|
|
855 | ev_periodic_start (EV_A_ w); |
457 | |
856 | |
458 | ev_now = ev_time (); |
857 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
|
|
858 | } |
459 | } |
859 | } |
|
|
860 | } |
|
|
861 | } |
460 | |
862 | |
461 | /* time jump detected, reschedule atimers */ |
863 | inline int |
462 | for (i = 0; i < atimercnt; ++i) |
864 | time_update_monotonic (EV_P) |
|
|
865 | { |
|
|
866 | mn_now = get_clock (); |
|
|
867 | |
|
|
868 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
869 | { |
|
|
870 | rt_now = rtmn_diff + mn_now; |
|
|
871 | return 0; |
|
|
872 | } |
|
|
873 | else |
|
|
874 | { |
|
|
875 | now_floor = mn_now; |
|
|
876 | rt_now = ev_time (); |
|
|
877 | return 1; |
|
|
878 | } |
|
|
879 | } |
|
|
880 | |
|
|
881 | static void |
|
|
882 | time_update (EV_P) |
|
|
883 | { |
|
|
884 | int i; |
|
|
885 | |
|
|
886 | #if EV_USE_MONOTONIC |
|
|
887 | if (expect_true (have_monotonic)) |
|
|
888 | { |
|
|
889 | if (time_update_monotonic (EV_A)) |
463 | { |
890 | { |
464 | struct ev_timer *w = atimers [i]; |
891 | ev_tstamp odiff = rtmn_diff; |
465 | w->at += ceil ((ev_now - w->at) / w->repeat + 1.) * w->repeat; |
892 | |
|
|
893 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
894 | { |
|
|
895 | rtmn_diff = rt_now - mn_now; |
|
|
896 | |
|
|
897 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
|
|
898 | return; /* all is well */ |
|
|
899 | |
|
|
900 | rt_now = ev_time (); |
|
|
901 | mn_now = get_clock (); |
|
|
902 | now_floor = mn_now; |
|
|
903 | } |
|
|
904 | |
|
|
905 | periodics_reschedule (EV_A); |
|
|
906 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
907 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
466 | } |
908 | } |
467 | } |
909 | } |
468 | else |
910 | else |
|
|
911 | #endif |
469 | { |
912 | { |
470 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
913 | rt_now = ev_time (); |
471 | /* time jump detected, adjust rtimers */ |
914 | |
|
|
915 | if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
|
|
916 | { |
|
|
917 | periodics_reschedule (EV_A); |
|
|
918 | |
|
|
919 | /* adjust timers. this is easy, as the offset is the same for all */ |
472 | for (i = 0; i < rtimercnt; ++i) |
920 | for (i = 0; i < timercnt; ++i) |
473 | rtimers [i]->at += ev_now - now; |
921 | timers [i]->at += rt_now - mn_now; |
|
|
922 | } |
474 | |
923 | |
475 | now = ev_now; |
924 | mn_now = rt_now; |
476 | } |
925 | } |
477 | } |
926 | } |
478 | |
927 | |
479 | int ev_loop_done; |
928 | void |
|
|
929 | ev_ref (EV_P) |
|
|
930 | { |
|
|
931 | ++activecnt; |
|
|
932 | } |
480 | |
933 | |
|
|
934 | void |
|
|
935 | ev_unref (EV_P) |
|
|
936 | { |
|
|
937 | --activecnt; |
|
|
938 | } |
|
|
939 | |
|
|
940 | static int loop_done; |
|
|
941 | |
|
|
942 | void |
481 | void ev_loop (int flags) |
943 | ev_loop (EV_P_ int flags) |
482 | { |
944 | { |
483 | double block; |
945 | double block; |
484 | ev_loop_done = flags & EVLOOP_ONESHOT; |
946 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
485 | |
|
|
486 | if (checkcnt) |
|
|
487 | { |
|
|
488 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
|
|
489 | call_pending (); |
|
|
490 | } |
|
|
491 | |
947 | |
492 | do |
948 | do |
493 | { |
949 | { |
|
|
950 | /* queue check watchers (and execute them) */ |
|
|
951 | if (expect_false (preparecnt)) |
|
|
952 | { |
|
|
953 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
|
|
954 | call_pending (EV_A); |
|
|
955 | } |
|
|
956 | |
494 | /* update fd-related kernel structures */ |
957 | /* update fd-related kernel structures */ |
495 | fd_reify (); |
958 | fd_reify (EV_A); |
496 | |
959 | |
497 | /* calculate blocking time */ |
960 | /* calculate blocking time */ |
|
|
961 | |
|
|
962 | /* we only need this for !monotonic clockor timers, but as we basically |
|
|
963 | always have timers, we just calculate it always */ |
|
|
964 | #if EV_USE_MONOTONIC |
|
|
965 | if (expect_true (have_monotonic)) |
|
|
966 | time_update_monotonic (EV_A); |
|
|
967 | else |
|
|
968 | #endif |
|
|
969 | { |
|
|
970 | rt_now = ev_time (); |
|
|
971 | mn_now = rt_now; |
|
|
972 | } |
|
|
973 | |
498 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
974 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
499 | block = 0.; |
975 | block = 0.; |
500 | else |
976 | else |
501 | { |
977 | { |
502 | block = MAX_BLOCKTIME; |
978 | block = MAX_BLOCKTIME; |
503 | |
979 | |
504 | if (rtimercnt) |
980 | if (timercnt) |
505 | { |
981 | { |
506 | ev_tstamp to = rtimers [0]->at - get_clock () + method_fudge; |
982 | ev_tstamp to = timers [0]->at - mn_now + method_fudge; |
507 | if (block > to) block = to; |
983 | if (block > to) block = to; |
508 | } |
984 | } |
509 | |
985 | |
510 | if (atimercnt) |
986 | if (periodiccnt) |
511 | { |
987 | { |
512 | ev_tstamp to = atimers [0]->at - ev_time () + method_fudge; |
988 | ev_tstamp to = periodics [0]->at - rt_now + method_fudge; |
513 | if (block > to) block = to; |
989 | if (block > to) block = to; |
514 | } |
990 | } |
515 | |
991 | |
516 | if (block < 0.) block = 0.; |
992 | if (block < 0.) block = 0.; |
517 | } |
993 | } |
518 | |
994 | |
519 | method_poll (block); |
995 | method_poll (EV_A_ block); |
520 | |
996 | |
521 | /* update ev_now, do magic */ |
997 | /* update rt_now, do magic */ |
522 | time_update (); |
998 | time_update (EV_A); |
523 | |
999 | |
524 | /* queue pending timers and reschedule them */ |
1000 | /* queue pending timers and reschedule them */ |
525 | /* absolute timers first */ |
1001 | timers_reify (EV_A); /* relative timers called last */ |
526 | timers_reify (atimers, atimercnt, ev_now); |
1002 | periodics_reify (EV_A); /* absolute timers called first */ |
527 | /* relative timers second */ |
|
|
528 | timers_reify (rtimers, rtimercnt, now); |
|
|
529 | |
1003 | |
530 | /* queue idle watchers unless io or timers are pending */ |
1004 | /* queue idle watchers unless io or timers are pending */ |
531 | if (!pendingcnt) |
1005 | if (!pendingcnt) |
532 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
1006 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
533 | |
1007 | |
534 | /* queue check and possibly idle watchers */ |
1008 | /* queue check watchers, to be executed first */ |
|
|
1009 | if (checkcnt) |
535 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1010 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
536 | |
1011 | |
537 | call_pending (); |
1012 | call_pending (EV_A); |
538 | } |
1013 | } |
539 | while (!ev_loop_done); |
1014 | while (activecnt && !loop_done); |
|
|
1015 | |
|
|
1016 | if (loop_done != 2) |
|
|
1017 | loop_done = 0; |
|
|
1018 | } |
|
|
1019 | |
|
|
1020 | void |
|
|
1021 | ev_unloop (EV_P_ int how) |
|
|
1022 | { |
|
|
1023 | loop_done = how; |
540 | } |
1024 | } |
541 | |
1025 | |
542 | /*****************************************************************************/ |
1026 | /*****************************************************************************/ |
543 | |
1027 | |
544 | static void |
1028 | inline void |
545 | wlist_add (WL *head, WL elem) |
1029 | wlist_add (WL *head, WL elem) |
546 | { |
1030 | { |
547 | elem->next = *head; |
1031 | elem->next = *head; |
548 | *head = elem; |
1032 | *head = elem; |
549 | } |
1033 | } |
550 | |
1034 | |
551 | static void |
1035 | inline void |
552 | wlist_del (WL *head, WL elem) |
1036 | wlist_del (WL *head, WL elem) |
553 | { |
1037 | { |
554 | while (*head) |
1038 | while (*head) |
555 | { |
1039 | { |
556 | if (*head == elem) |
1040 | if (*head == elem) |
… | |
… | |
561 | |
1045 | |
562 | head = &(*head)->next; |
1046 | head = &(*head)->next; |
563 | } |
1047 | } |
564 | } |
1048 | } |
565 | |
1049 | |
566 | static void |
1050 | inline void |
|
|
1051 | ev_clear_pending (EV_P_ W w) |
|
|
1052 | { |
|
|
1053 | if (w->pending) |
|
|
1054 | { |
|
|
1055 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
|
|
1056 | w->pending = 0; |
|
|
1057 | } |
|
|
1058 | } |
|
|
1059 | |
|
|
1060 | inline void |
567 | ev_start (W w, int active) |
1061 | ev_start (EV_P_ W w, int active) |
568 | { |
1062 | { |
569 | w->pending = 0; |
1063 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1064 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1065 | |
570 | w->active = active; |
1066 | w->active = active; |
|
|
1067 | ev_ref (EV_A); |
571 | } |
1068 | } |
572 | |
1069 | |
573 | static void |
1070 | inline void |
574 | ev_stop (W w) |
1071 | ev_stop (EV_P_ W w) |
575 | { |
1072 | { |
576 | if (w->pending) |
1073 | ev_unref (EV_A); |
577 | pendings [w->pending - 1].w = 0; |
|
|
578 | |
|
|
579 | w->active = 0; |
1074 | w->active = 0; |
580 | } |
1075 | } |
581 | |
1076 | |
582 | /*****************************************************************************/ |
1077 | /*****************************************************************************/ |
583 | |
1078 | |
584 | void |
1079 | void |
585 | evio_start (struct ev_io *w) |
1080 | ev_io_start (EV_P_ struct ev_io *w) |
586 | { |
1081 | { |
|
|
1082 | int fd = w->fd; |
|
|
1083 | |
587 | if (ev_is_active (w)) |
1084 | if (ev_is_active (w)) |
588 | return; |
1085 | return; |
589 | |
1086 | |
590 | int fd = w->fd; |
1087 | assert (("ev_io_start called with negative fd", fd >= 0)); |
591 | |
1088 | |
592 | ev_start ((W)w, 1); |
1089 | ev_start (EV_A_ (W)w, 1); |
593 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1090 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
594 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1091 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
595 | |
1092 | |
596 | ++fdchangecnt; |
1093 | fd_change (EV_A_ fd); |
597 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
598 | fdchanges [fdchangecnt - 1] = fd; |
|
|
599 | } |
1094 | } |
600 | |
1095 | |
601 | void |
1096 | void |
602 | evio_stop (struct ev_io *w) |
1097 | ev_io_stop (EV_P_ struct ev_io *w) |
603 | { |
1098 | { |
|
|
1099 | ev_clear_pending (EV_A_ (W)w); |
604 | if (!ev_is_active (w)) |
1100 | if (!ev_is_active (w)) |
605 | return; |
1101 | return; |
606 | |
1102 | |
607 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1103 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
608 | ev_stop ((W)w); |
1104 | ev_stop (EV_A_ (W)w); |
609 | |
1105 | |
610 | ++fdchangecnt; |
1106 | fd_change (EV_A_ w->fd); |
611 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
612 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
613 | } |
1107 | } |
614 | |
1108 | |
615 | void |
1109 | void |
616 | evtimer_start (struct ev_timer *w) |
1110 | ev_timer_start (EV_P_ struct ev_timer *w) |
617 | { |
1111 | { |
618 | if (ev_is_active (w)) |
1112 | if (ev_is_active (w)) |
619 | return; |
1113 | return; |
620 | |
1114 | |
621 | if (w->is_abs) |
1115 | w->at += mn_now; |
|
|
1116 | |
|
|
1117 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
|
|
1118 | |
|
|
1119 | ev_start (EV_A_ (W)w, ++timercnt); |
|
|
1120 | array_needsize (timers, timermax, timercnt, ); |
|
|
1121 | timers [timercnt - 1] = w; |
|
|
1122 | upheap ((WT *)timers, timercnt - 1); |
|
|
1123 | } |
|
|
1124 | |
|
|
1125 | void |
|
|
1126 | ev_timer_stop (EV_P_ struct ev_timer *w) |
|
|
1127 | { |
|
|
1128 | ev_clear_pending (EV_A_ (W)w); |
|
|
1129 | if (!ev_is_active (w)) |
|
|
1130 | return; |
|
|
1131 | |
|
|
1132 | if (w->active < timercnt--) |
|
|
1133 | { |
|
|
1134 | timers [w->active - 1] = timers [timercnt]; |
|
|
1135 | downheap ((WT *)timers, timercnt, w->active - 1); |
622 | { |
1136 | } |
623 | /* this formula differs from the one in timer_reify becuse we do not round up */ |
1137 | |
|
|
1138 | w->at = w->repeat; |
|
|
1139 | |
|
|
1140 | ev_stop (EV_A_ (W)w); |
|
|
1141 | } |
|
|
1142 | |
|
|
1143 | void |
|
|
1144 | ev_timer_again (EV_P_ struct ev_timer *w) |
|
|
1145 | { |
|
|
1146 | if (ev_is_active (w)) |
|
|
1147 | { |
624 | if (w->repeat) |
1148 | if (w->repeat) |
625 | w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat; |
1149 | { |
626 | |
1150 | w->at = mn_now + w->repeat; |
627 | ev_start ((W)w, ++atimercnt); |
1151 | downheap ((WT *)timers, timercnt, w->active - 1); |
628 | array_needsize (atimers, atimermax, atimercnt, ); |
1152 | } |
629 | atimers [atimercnt - 1] = w; |
|
|
630 | upheap (atimers, atimercnt - 1); |
|
|
631 | } |
|
|
632 | else |
1153 | else |
|
|
1154 | ev_timer_stop (EV_A_ w); |
633 | { |
1155 | } |
634 | w->at += now; |
1156 | else if (w->repeat) |
635 | |
1157 | ev_timer_start (EV_A_ w); |
636 | ev_start ((W)w, ++rtimercnt); |
|
|
637 | array_needsize (rtimers, rtimermax, rtimercnt, ); |
|
|
638 | rtimers [rtimercnt - 1] = w; |
|
|
639 | upheap (rtimers, rtimercnt - 1); |
|
|
640 | } |
|
|
641 | |
|
|
642 | } |
1158 | } |
643 | |
1159 | |
644 | void |
1160 | void |
645 | evtimer_stop (struct ev_timer *w) |
1161 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
646 | { |
1162 | { |
|
|
1163 | if (ev_is_active (w)) |
|
|
1164 | return; |
|
|
1165 | |
|
|
1166 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
|
|
1167 | |
|
|
1168 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
|
|
1169 | if (w->interval) |
|
|
1170 | w->at += ceil ((rt_now - w->at) / w->interval) * w->interval; |
|
|
1171 | |
|
|
1172 | ev_start (EV_A_ (W)w, ++periodiccnt); |
|
|
1173 | array_needsize (periodics, periodicmax, periodiccnt, ); |
|
|
1174 | periodics [periodiccnt - 1] = w; |
|
|
1175 | upheap ((WT *)periodics, periodiccnt - 1); |
|
|
1176 | } |
|
|
1177 | |
|
|
1178 | void |
|
|
1179 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
|
|
1180 | { |
|
|
1181 | ev_clear_pending (EV_A_ (W)w); |
647 | if (!ev_is_active (w)) |
1182 | if (!ev_is_active (w)) |
648 | return; |
1183 | return; |
649 | |
1184 | |
650 | if (w->is_abs) |
|
|
651 | { |
|
|
652 | if (w->active < atimercnt--) |
1185 | if (w->active < periodiccnt--) |
653 | { |
|
|
654 | atimers [w->active - 1] = atimers [atimercnt]; |
|
|
655 | downheap (atimers, atimercnt, w->active - 1); |
|
|
656 | } |
|
|
657 | } |
1186 | { |
658 | else |
1187 | periodics [w->active - 1] = periodics [periodiccnt]; |
|
|
1188 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
659 | { |
1189 | } |
660 | if (w->active < rtimercnt--) |
|
|
661 | { |
|
|
662 | rtimers [w->active - 1] = rtimers [rtimercnt]; |
|
|
663 | downheap (rtimers, rtimercnt, w->active - 1); |
|
|
664 | } |
|
|
665 | } |
|
|
666 | |
1190 | |
667 | ev_stop ((W)w); |
1191 | ev_stop (EV_A_ (W)w); |
668 | } |
1192 | } |
669 | |
1193 | |
670 | void |
1194 | void |
671 | evsignal_start (struct ev_signal *w) |
1195 | ev_idle_start (EV_P_ struct ev_idle *w) |
672 | { |
1196 | { |
673 | if (ev_is_active (w)) |
1197 | if (ev_is_active (w)) |
674 | return; |
1198 | return; |
675 | |
1199 | |
|
|
1200 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1201 | array_needsize (idles, idlemax, idlecnt, ); |
|
|
1202 | idles [idlecnt - 1] = w; |
|
|
1203 | } |
|
|
1204 | |
|
|
1205 | void |
|
|
1206 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1207 | { |
|
|
1208 | ev_clear_pending (EV_A_ (W)w); |
|
|
1209 | if (ev_is_active (w)) |
|
|
1210 | return; |
|
|
1211 | |
|
|
1212 | idles [w->active - 1] = idles [--idlecnt]; |
|
|
1213 | ev_stop (EV_A_ (W)w); |
|
|
1214 | } |
|
|
1215 | |
|
|
1216 | void |
|
|
1217 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1218 | { |
|
|
1219 | if (ev_is_active (w)) |
|
|
1220 | return; |
|
|
1221 | |
|
|
1222 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1223 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
1224 | prepares [preparecnt - 1] = w; |
|
|
1225 | } |
|
|
1226 | |
|
|
1227 | void |
|
|
1228 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1229 | { |
|
|
1230 | ev_clear_pending (EV_A_ (W)w); |
|
|
1231 | if (ev_is_active (w)) |
|
|
1232 | return; |
|
|
1233 | |
|
|
1234 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
1235 | ev_stop (EV_A_ (W)w); |
|
|
1236 | } |
|
|
1237 | |
|
|
1238 | void |
|
|
1239 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1240 | { |
|
|
1241 | if (ev_is_active (w)) |
|
|
1242 | return; |
|
|
1243 | |
|
|
1244 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1245 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
1246 | checks [checkcnt - 1] = w; |
|
|
1247 | } |
|
|
1248 | |
|
|
1249 | void |
|
|
1250 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1251 | { |
|
|
1252 | ev_clear_pending (EV_A_ (W)w); |
|
|
1253 | if (ev_is_active (w)) |
|
|
1254 | return; |
|
|
1255 | |
|
|
1256 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
1257 | ev_stop (EV_A_ (W)w); |
|
|
1258 | } |
|
|
1259 | |
|
|
1260 | #ifndef SA_RESTART |
|
|
1261 | # define SA_RESTART 0 |
|
|
1262 | #endif |
|
|
1263 | |
|
|
1264 | void |
|
|
1265 | ev_signal_start (EV_P_ struct ev_signal *w) |
|
|
1266 | { |
|
|
1267 | #if EV_MULTIPLICITY |
|
|
1268 | assert (("signal watchers are only supported in the default loop", loop == default_loop)); |
|
|
1269 | #endif |
|
|
1270 | if (ev_is_active (w)) |
|
|
1271 | return; |
|
|
1272 | |
|
|
1273 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1274 | |
676 | ev_start ((W)w, 1); |
1275 | ev_start (EV_A_ (W)w, 1); |
677 | array_needsize (signals, signalmax, w->signum, signals_init); |
1276 | array_needsize (signals, signalmax, w->signum, signals_init); |
678 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1277 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
679 | |
1278 | |
680 | if (!w->next) |
1279 | if (!w->next) |
681 | { |
1280 | { |
682 | struct sigaction sa; |
1281 | struct sigaction sa; |
683 | sa.sa_handler = sighandler; |
1282 | sa.sa_handler = sighandler; |
684 | sigfillset (&sa.sa_mask); |
1283 | sigfillset (&sa.sa_mask); |
685 | sa.sa_flags = 0; |
1284 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
686 | sigaction (w->signum, &sa, 0); |
1285 | sigaction (w->signum, &sa, 0); |
687 | } |
1286 | } |
688 | } |
1287 | } |
689 | |
1288 | |
690 | void |
1289 | void |
691 | evsignal_stop (struct ev_signal *w) |
1290 | ev_signal_stop (EV_P_ struct ev_signal *w) |
692 | { |
1291 | { |
|
|
1292 | ev_clear_pending (EV_A_ (W)w); |
693 | if (!ev_is_active (w)) |
1293 | if (!ev_is_active (w)) |
694 | return; |
1294 | return; |
695 | |
1295 | |
696 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1296 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
697 | ev_stop ((W)w); |
1297 | ev_stop (EV_A_ (W)w); |
698 | |
1298 | |
699 | if (!signals [w->signum - 1].head) |
1299 | if (!signals [w->signum - 1].head) |
700 | signal (w->signum, SIG_DFL); |
1300 | signal (w->signum, SIG_DFL); |
701 | } |
1301 | } |
702 | |
1302 | |
703 | void evidle_start (struct ev_idle *w) |
1303 | void |
|
|
1304 | ev_child_start (EV_P_ struct ev_child *w) |
704 | { |
1305 | { |
|
|
1306 | #if EV_MULTIPLICITY |
|
|
1307 | assert (("child watchers are only supported in the default loop", loop == default_loop)); |
|
|
1308 | #endif |
705 | if (ev_is_active (w)) |
1309 | if (ev_is_active (w)) |
706 | return; |
1310 | return; |
707 | |
1311 | |
708 | ev_start ((W)w, ++idlecnt); |
1312 | ev_start (EV_A_ (W)w, 1); |
709 | array_needsize (idles, idlemax, idlecnt, ); |
1313 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
710 | idles [idlecnt - 1] = w; |
|
|
711 | } |
1314 | } |
712 | |
1315 | |
713 | void evidle_stop (struct ev_idle *w) |
1316 | void |
|
|
1317 | ev_child_stop (EV_P_ struct ev_child *w) |
714 | { |
1318 | { |
715 | idles [w->active - 1] = idles [--idlecnt]; |
1319 | ev_clear_pending (EV_A_ (W)w); |
716 | ev_stop ((W)w); |
|
|
717 | } |
|
|
718 | |
|
|
719 | void evcheck_start (struct ev_check *w) |
|
|
720 | { |
|
|
721 | if (ev_is_active (w)) |
1320 | if (ev_is_active (w)) |
722 | return; |
1321 | return; |
723 | |
1322 | |
724 | ev_start ((W)w, ++checkcnt); |
1323 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
725 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
726 | checks [checkcnt - 1] = w; |
|
|
727 | } |
|
|
728 | |
|
|
729 | void evcheck_stop (struct ev_check *w) |
|
|
730 | { |
|
|
731 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
732 | ev_stop ((W)w); |
1324 | ev_stop (EV_A_ (W)w); |
733 | } |
1325 | } |
734 | |
1326 | |
735 | /*****************************************************************************/ |
1327 | /*****************************************************************************/ |
736 | |
1328 | |
737 | #if 0 |
1329 | struct ev_once |
738 | |
|
|
739 | static void |
|
|
740 | sin_cb (struct ev_io *w, int revents) |
|
|
741 | { |
1330 | { |
742 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
743 | } |
|
|
744 | |
|
|
745 | static void |
|
|
746 | ocb (struct ev_timer *w, int revents) |
|
|
747 | { |
|
|
748 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
749 | evtimer_stop (w); |
|
|
750 | evtimer_start (w); |
|
|
751 | } |
|
|
752 | |
|
|
753 | static void |
|
|
754 | scb (struct ev_signal *w, int revents) |
|
|
755 | { |
|
|
756 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
757 | } |
|
|
758 | |
|
|
759 | static void |
|
|
760 | gcb (struct ev_signal *w, int revents) |
|
|
761 | { |
|
|
762 | fprintf (stderr, "generic %x\n", revents); |
|
|
763 | } |
|
|
764 | |
|
|
765 | int main (void) |
|
|
766 | { |
|
|
767 | struct ev_io sin; |
1331 | struct ev_io io; |
768 | |
|
|
769 | ev_init (0); |
|
|
770 | |
|
|
771 | evw_init (&sin, sin_cb, 55); |
|
|
772 | evio_set (&sin, 0, EV_READ); |
|
|
773 | evio_start (&sin); |
|
|
774 | |
|
|
775 | struct ev_timer t[10000]; |
|
|
776 | |
|
|
777 | #if 0 |
|
|
778 | int i; |
|
|
779 | for (i = 0; i < 10000; ++i) |
|
|
780 | { |
|
|
781 | struct ev_timer *w = t + i; |
|
|
782 | evw_init (w, ocb, i); |
|
|
783 | evtimer_set_abs (w, drand48 (), 0.99775533); |
|
|
784 | evtimer_start (w); |
|
|
785 | if (drand48 () < 0.5) |
|
|
786 | evtimer_stop (w); |
|
|
787 | } |
|
|
788 | #endif |
|
|
789 | |
|
|
790 | struct ev_timer t1; |
1332 | struct ev_timer to; |
791 | evw_init (&t1, ocb, 0); |
1333 | void (*cb)(int revents, void *arg); |
792 | evtimer_set_abs (&t1, 5, 10); |
1334 | void *arg; |
793 | evtimer_start (&t1); |
1335 | }; |
794 | |
1336 | |
795 | struct ev_signal sig; |
1337 | static void |
796 | evw_init (&sig, scb, 65535); |
1338 | once_cb (EV_P_ struct ev_once *once, int revents) |
797 | evsignal_set (&sig, SIGQUIT); |
1339 | { |
798 | evsignal_start (&sig); |
1340 | void (*cb)(int revents, void *arg) = once->cb; |
|
|
1341 | void *arg = once->arg; |
799 | |
1342 | |
800 | struct ev_check cw; |
1343 | ev_io_stop (EV_A_ &once->io); |
801 | evw_init (&cw, gcb, 0); |
1344 | ev_timer_stop (EV_A_ &once->to); |
802 | evcheck_start (&cw); |
1345 | free (once); |
803 | |
1346 | |
804 | struct ev_idle iw; |
1347 | cb (revents, arg); |
805 | evw_init (&iw, gcb, 0); |
|
|
806 | evidle_start (&iw); |
|
|
807 | |
|
|
808 | ev_loop (0); |
|
|
809 | |
|
|
810 | return 0; |
|
|
811 | } |
1348 | } |
812 | |
1349 | |
813 | #endif |
1350 | static void |
|
|
1351 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
|
|
1352 | { |
|
|
1353 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
|
|
1354 | } |
814 | |
1355 | |
|
|
1356 | static void |
|
|
1357 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
|
|
1358 | { |
|
|
1359 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
|
|
1360 | } |
815 | |
1361 | |
|
|
1362 | void |
|
|
1363 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
|
|
1364 | { |
|
|
1365 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
816 | |
1366 | |
|
|
1367 | if (!once) |
|
|
1368 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
|
|
1369 | else |
|
|
1370 | { |
|
|
1371 | once->cb = cb; |
|
|
1372 | once->arg = arg; |
817 | |
1373 | |
|
|
1374 | ev_watcher_init (&once->io, once_cb_io); |
|
|
1375 | if (fd >= 0) |
|
|
1376 | { |
|
|
1377 | ev_io_set (&once->io, fd, events); |
|
|
1378 | ev_io_start (EV_A_ &once->io); |
|
|
1379 | } |
|
|
1380 | |
|
|
1381 | ev_watcher_init (&once->to, once_cb_to); |
|
|
1382 | if (timeout >= 0.) |
|
|
1383 | { |
|
|
1384 | ev_timer_set (&once->to, timeout, 0.); |
|
|
1385 | ev_timer_start (EV_A_ &once->to); |
|
|
1386 | } |
|
|
1387 | } |
|
|
1388 | } |
|
|
1389 | |