1 | /* |
1 | /* |
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2 | * libev event processing core, watcher management |
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3 | * |
2 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
3 | * All rights reserved. |
5 | * All rights reserved. |
4 | * |
6 | * |
5 | * Redistribution and use in source and binary forms, with or without |
7 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions are |
8 | * modification, are permitted provided that the following conditions are |
… | |
… | |
24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
28 | */ |
30 | */ |
29 | #if EV_USE_CONFIG_H |
31 | #ifndef EV_STANDALONE |
30 | # include "config.h" |
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 | |
31 | #endif |
55 | #endif |
32 | |
56 | |
33 | #include <math.h> |
57 | #include <math.h> |
34 | #include <stdlib.h> |
58 | #include <stdlib.h> |
35 | #include <unistd.h> |
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36 | #include <fcntl.h> |
59 | #include <fcntl.h> |
37 | #include <signal.h> |
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38 | #include <stddef.h> |
60 | #include <stddef.h> |
39 | |
61 | |
40 | #include <stdio.h> |
62 | #include <stdio.h> |
41 | |
63 | |
42 | #include <assert.h> |
64 | #include <assert.h> |
43 | #include <errno.h> |
65 | #include <errno.h> |
44 | #include <sys/types.h> |
66 | #include <sys/types.h> |
45 | #include <sys/wait.h> |
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46 | #include <sys/time.h> |
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47 | #include <time.h> |
67 | #include <time.h> |
48 | |
68 | |
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69 | #include <signal.h> |
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70 | |
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71 | #ifndef WIN32 |
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72 | # include <unistd.h> |
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73 | # include <sys/time.h> |
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74 | # include <sys/wait.h> |
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75 | #endif |
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76 | /**/ |
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77 | |
49 | #ifndef EV_USE_MONOTONIC |
78 | #ifndef EV_USE_MONOTONIC |
50 | # ifdef CLOCK_MONOTONIC |
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51 | # define EV_USE_MONOTONIC 1 |
79 | # define EV_USE_MONOTONIC 1 |
52 | # endif |
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53 | #endif |
80 | #endif |
54 | |
81 | |
55 | #ifndef EV_USE_SELECT |
82 | #ifndef EV_USE_SELECT |
56 | # define EV_USE_SELECT 1 |
83 | # define EV_USE_SELECT 1 |
57 | #endif |
84 | #endif |
58 | |
85 | |
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86 | #ifndef EV_USE_POLL |
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87 | # define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ |
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88 | #endif |
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89 | |
59 | #ifndef EV_USE_EPOLL |
90 | #ifndef EV_USE_EPOLL |
60 | # define EV_USE_EPOLL 0 |
91 | # define EV_USE_EPOLL 0 |
61 | #endif |
92 | #endif |
62 | |
93 | |
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94 | #ifndef EV_USE_KQUEUE |
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95 | # define EV_USE_KQUEUE 0 |
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96 | #endif |
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97 | |
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98 | #ifndef EV_USE_WIN32 |
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99 | # ifdef WIN32 |
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100 | # define EV_USE_WIN32 0 /* it does not exist, use select */ |
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101 | # undef EV_USE_SELECT |
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102 | # define EV_USE_SELECT 1 |
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103 | # else |
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104 | # define EV_USE_WIN32 0 |
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105 | # endif |
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106 | #endif |
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107 | |
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108 | #ifndef EV_USE_REALTIME |
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109 | # define EV_USE_REALTIME 1 |
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110 | #endif |
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111 | |
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112 | /**/ |
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113 | |
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114 | #ifndef CLOCK_MONOTONIC |
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115 | # undef EV_USE_MONOTONIC |
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116 | # define EV_USE_MONOTONIC 0 |
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117 | #endif |
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118 | |
63 | #ifndef CLOCK_REALTIME |
119 | #ifndef CLOCK_REALTIME |
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120 | # undef EV_USE_REALTIME |
64 | # define EV_USE_REALTIME 0 |
121 | # define EV_USE_REALTIME 0 |
65 | #endif |
122 | #endif |
66 | #ifndef EV_USE_REALTIME |
123 | |
67 | # define EV_USE_REALTIME 1 /* posix requirement, but might be slower */ |
124 | /**/ |
68 | #endif |
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69 | |
125 | |
70 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
126 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
71 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detetc time jumps) */ |
127 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ |
72 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
128 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
73 | #define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ |
129 | /*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ |
74 | |
130 | |
75 | #include "ev.h" |
131 | #include "ev.h" |
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132 | |
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133 | #if __GNUC__ >= 3 |
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134 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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135 | # define inline inline |
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136 | #else |
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137 | # define expect(expr,value) (expr) |
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138 | # define inline static |
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139 | #endif |
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140 | |
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141 | #define expect_false(expr) expect ((expr) != 0, 0) |
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142 | #define expect_true(expr) expect ((expr) != 0, 1) |
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143 | |
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144 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
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145 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
76 | |
146 | |
77 | typedef struct ev_watcher *W; |
147 | typedef struct ev_watcher *W; |
78 | typedef struct ev_watcher_list *WL; |
148 | typedef struct ev_watcher_list *WL; |
79 | typedef struct ev_watcher_time *WT; |
149 | typedef struct ev_watcher_time *WT; |
80 | |
150 | |
81 | static ev_tstamp now, diff; /* monotonic clock */ |
151 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
82 | ev_tstamp ev_now; |
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83 | int ev_method; |
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84 | |
152 | |
85 | static int have_monotonic; /* runtime */ |
153 | #include "ev_win32.c" |
86 | |
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87 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
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88 | static void (*method_modify)(int fd, int oev, int nev); |
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89 | static void (*method_poll)(ev_tstamp timeout); |
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90 | |
154 | |
91 | /*****************************************************************************/ |
155 | /*****************************************************************************/ |
92 | |
156 | |
93 | ev_tstamp |
157 | static void (*syserr_cb)(const char *msg); |
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158 | |
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159 | void ev_set_syserr_cb (void (*cb)(const char *msg)) |
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160 | { |
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161 | syserr_cb = cb; |
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162 | } |
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163 | |
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164 | static void |
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165 | syserr (const char *msg) |
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166 | { |
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167 | if (!msg) |
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168 | msg = "(libev) system error"; |
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169 | |
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170 | if (syserr_cb) |
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171 | syserr_cb (msg); |
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172 | else |
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173 | { |
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174 | perror (msg); |
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175 | abort (); |
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176 | } |
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177 | } |
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178 | |
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179 | static void *(*alloc)(void *ptr, long size); |
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180 | |
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181 | void ev_set_allocator (void *(*cb)(void *ptr, long size)) |
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182 | { |
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183 | alloc = cb; |
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184 | } |
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185 | |
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186 | static void * |
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187 | ev_realloc (void *ptr, long size) |
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188 | { |
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189 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
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190 | |
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191 | if (!ptr && size) |
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192 | { |
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193 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
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194 | abort (); |
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195 | } |
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196 | |
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197 | return ptr; |
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198 | } |
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199 | |
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200 | #define ev_malloc(size) ev_realloc (0, (size)) |
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201 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
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202 | |
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203 | /*****************************************************************************/ |
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204 | |
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205 | typedef struct |
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206 | { |
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207 | WL head; |
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208 | unsigned char events; |
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209 | unsigned char reify; |
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210 | } ANFD; |
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211 | |
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212 | typedef struct |
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213 | { |
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214 | W w; |
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215 | int events; |
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216 | } ANPENDING; |
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217 | |
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218 | #if EV_MULTIPLICITY |
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219 | |
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220 | struct ev_loop |
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221 | { |
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222 | # define VAR(name,decl) decl; |
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223 | # include "ev_vars.h" |
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224 | }; |
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225 | # undef VAR |
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226 | # include "ev_wrap.h" |
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227 | |
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228 | #else |
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229 | |
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230 | # define VAR(name,decl) static decl; |
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231 | # include "ev_vars.h" |
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232 | # undef VAR |
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233 | |
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234 | #endif |
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235 | |
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236 | /*****************************************************************************/ |
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237 | |
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238 | inline ev_tstamp |
94 | ev_time (void) |
239 | ev_time (void) |
95 | { |
240 | { |
96 | #if EV_USE_REALTIME |
241 | #if EV_USE_REALTIME |
97 | struct timespec ts; |
242 | struct timespec ts; |
98 | clock_gettime (CLOCK_REALTIME, &ts); |
243 | clock_gettime (CLOCK_REALTIME, &ts); |
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102 | gettimeofday (&tv, 0); |
247 | gettimeofday (&tv, 0); |
103 | return tv.tv_sec + tv.tv_usec * 1e-6; |
248 | return tv.tv_sec + tv.tv_usec * 1e-6; |
104 | #endif |
249 | #endif |
105 | } |
250 | } |
106 | |
251 | |
107 | static ev_tstamp |
252 | inline ev_tstamp |
108 | get_clock (void) |
253 | get_clock (void) |
109 | { |
254 | { |
110 | #if EV_USE_MONOTONIC |
255 | #if EV_USE_MONOTONIC |
111 | if (have_monotonic) |
256 | if (expect_true (have_monotonic)) |
112 | { |
257 | { |
113 | struct timespec ts; |
258 | struct timespec ts; |
114 | clock_gettime (CLOCK_MONOTONIC, &ts); |
259 | clock_gettime (CLOCK_MONOTONIC, &ts); |
115 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
260 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
116 | } |
261 | } |
117 | #endif |
262 | #endif |
118 | |
263 | |
119 | return ev_time (); |
264 | return ev_time (); |
120 | } |
265 | } |
121 | |
266 | |
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267 | ev_tstamp |
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268 | ev_now (EV_P) |
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269 | { |
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270 | return rt_now; |
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271 | } |
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272 | |
122 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
273 | #define array_roundsize(type,n) ((n) | 4 & ~3) |
123 | |
274 | |
124 | #define array_needsize(base,cur,cnt,init) \ |
275 | #define array_needsize(type,base,cur,cnt,init) \ |
125 | if ((cnt) > cur) \ |
276 | if (expect_false ((cnt) > cur)) \ |
126 | { \ |
277 | { \ |
127 | int newcnt = cur; \ |
278 | int newcnt = cur; \ |
128 | do \ |
279 | do \ |
129 | { \ |
280 | { \ |
130 | newcnt = array_roundsize (base, newcnt << 1); \ |
281 | newcnt = array_roundsize (type, newcnt << 1); \ |
131 | } \ |
282 | } \ |
132 | while ((cnt) > newcnt); \ |
283 | while ((cnt) > newcnt); \ |
133 | \ |
284 | \ |
134 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
285 | base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\ |
135 | init (base + cur, newcnt - cur); \ |
286 | init (base + cur, newcnt - cur); \ |
136 | cur = newcnt; \ |
287 | cur = newcnt; \ |
137 | } |
288 | } |
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289 | |
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290 | #define array_slim(type,stem) \ |
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291 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
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292 | { \ |
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293 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
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294 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
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295 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
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296 | } |
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297 | |
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298 | /* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */ |
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299 | /* bringing us everlasting joy in form of stupid extra macros that are not required in C */ |
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300 | #define array_free_microshit(stem) \ |
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301 | ev_free (stem ## s); stem ## cnt = stem ## max = 0; |
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302 | |
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303 | #define array_free(stem, idx) \ |
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304 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
138 | |
305 | |
139 | /*****************************************************************************/ |
306 | /*****************************************************************************/ |
140 | |
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141 | typedef struct |
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142 | { |
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143 | struct ev_io *head; |
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144 | unsigned char events; |
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145 | unsigned char reify; |
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146 | } ANFD; |
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147 | |
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148 | static ANFD *anfds; |
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149 | static int anfdmax; |
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150 | |
307 | |
151 | static void |
308 | static void |
152 | anfds_init (ANFD *base, int count) |
309 | anfds_init (ANFD *base, int count) |
153 | { |
310 | { |
154 | while (count--) |
311 | while (count--) |
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159 | |
316 | |
160 | ++base; |
317 | ++base; |
161 | } |
318 | } |
162 | } |
319 | } |
163 | |
320 | |
164 | typedef struct |
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165 | { |
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166 | W w; |
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167 | int events; |
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168 | } ANPENDING; |
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169 | |
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170 | static ANPENDING *pendings; |
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171 | static int pendingmax, pendingcnt; |
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172 | |
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173 | static void |
321 | static void |
174 | event (W w, int events) |
322 | event (EV_P_ W w, int events) |
175 | { |
323 | { |
176 | if (w->pending) |
324 | if (w->pending) |
177 | { |
325 | { |
178 | pendings [w->pending - 1].events |= events; |
326 | pendings [ABSPRI (w)][w->pending - 1].events |= events; |
179 | return; |
327 | return; |
180 | } |
328 | } |
181 | |
329 | |
182 | w->pending = ++pendingcnt; |
330 | w->pending = ++pendingcnt [ABSPRI (w)]; |
183 | array_needsize (pendings, pendingmax, pendingcnt, ); |
331 | array_needsize (ANPENDING, pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void)); |
184 | pendings [pendingcnt - 1].w = w; |
332 | pendings [ABSPRI (w)][w->pending - 1].w = w; |
185 | pendings [pendingcnt - 1].events = events; |
333 | pendings [ABSPRI (w)][w->pending - 1].events = events; |
186 | } |
334 | } |
187 | |
335 | |
188 | static void |
336 | static void |
189 | queue_events (W *events, int eventcnt, int type) |
337 | queue_events (EV_P_ W *events, int eventcnt, int type) |
190 | { |
338 | { |
191 | int i; |
339 | int i; |
192 | |
340 | |
193 | for (i = 0; i < eventcnt; ++i) |
341 | for (i = 0; i < eventcnt; ++i) |
194 | event (events [i], type); |
342 | event (EV_A_ events [i], type); |
195 | } |
343 | } |
196 | |
344 | |
197 | static void |
345 | static void |
198 | fd_event (int fd, int events) |
346 | fd_event (EV_P_ int fd, int events) |
199 | { |
347 | { |
200 | ANFD *anfd = anfds + fd; |
348 | ANFD *anfd = anfds + fd; |
201 | struct ev_io *w; |
349 | struct ev_io *w; |
202 | |
350 | |
203 | for (w = anfd->head; w; w = w->next) |
351 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
204 | { |
352 | { |
205 | int ev = w->events & events; |
353 | int ev = w->events & events; |
206 | |
354 | |
207 | if (ev) |
355 | if (ev) |
208 | event ((W)w, ev); |
356 | event (EV_A_ (W)w, ev); |
209 | } |
357 | } |
210 | } |
358 | } |
211 | |
359 | |
212 | /*****************************************************************************/ |
360 | /*****************************************************************************/ |
213 | |
361 | |
214 | static int *fdchanges; |
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215 | static int fdchangemax, fdchangecnt; |
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216 | |
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217 | static void |
362 | static void |
218 | fd_reify (void) |
363 | fd_reify (EV_P) |
219 | { |
364 | { |
220 | int i; |
365 | int i; |
221 | |
366 | |
222 | for (i = 0; i < fdchangecnt; ++i) |
367 | for (i = 0; i < fdchangecnt; ++i) |
223 | { |
368 | { |
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225 | ANFD *anfd = anfds + fd; |
370 | ANFD *anfd = anfds + fd; |
226 | struct ev_io *w; |
371 | struct ev_io *w; |
227 | |
372 | |
228 | int events = 0; |
373 | int events = 0; |
229 | |
374 | |
230 | for (w = anfd->head; w; w = w->next) |
375 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
231 | events |= w->events; |
376 | events |= w->events; |
232 | |
377 | |
233 | anfd->reify = 0; |
378 | anfd->reify = 0; |
234 | |
379 | |
235 | if (anfd->events != events) |
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236 | { |
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237 | method_modify (fd, anfd->events, events); |
380 | method_modify (EV_A_ fd, anfd->events, events); |
238 | anfd->events = events; |
381 | anfd->events = events; |
239 | } |
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240 | } |
382 | } |
241 | |
383 | |
242 | fdchangecnt = 0; |
384 | fdchangecnt = 0; |
243 | } |
385 | } |
244 | |
386 | |
245 | static void |
387 | static void |
246 | fd_change (int fd) |
388 | fd_change (EV_P_ int fd) |
247 | { |
389 | { |
248 | if (anfds [fd].reify || fdchangecnt < 0) |
390 | if (anfds [fd].reify) |
249 | return; |
391 | return; |
250 | |
392 | |
251 | anfds [fd].reify = 1; |
393 | anfds [fd].reify = 1; |
252 | |
394 | |
253 | ++fdchangecnt; |
395 | ++fdchangecnt; |
254 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
396 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); |
255 | fdchanges [fdchangecnt - 1] = fd; |
397 | fdchanges [fdchangecnt - 1] = fd; |
256 | } |
398 | } |
257 | |
399 | |
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400 | static void |
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401 | fd_kill (EV_P_ int fd) |
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402 | { |
|
|
403 | struct ev_io *w; |
|
|
404 | |
|
|
405 | while ((w = (struct ev_io *)anfds [fd].head)) |
|
|
406 | { |
|
|
407 | ev_io_stop (EV_A_ w); |
|
|
408 | event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
409 | } |
|
|
410 | } |
|
|
411 | |
|
|
412 | static int |
|
|
413 | fd_valid (int fd) |
|
|
414 | { |
|
|
415 | #ifdef WIN32 |
|
|
416 | return !!win32_get_osfhandle (fd); |
|
|
417 | #else |
|
|
418 | return fcntl (fd, F_GETFD) != -1; |
|
|
419 | #endif |
|
|
420 | } |
|
|
421 | |
258 | /* called on EBADF to verify fds */ |
422 | /* called on EBADF to verify fds */ |
259 | static void |
423 | static void |
260 | fd_recheck (void) |
424 | fd_ebadf (EV_P) |
261 | { |
425 | { |
262 | int fd; |
426 | int fd; |
263 | |
427 | |
264 | for (fd = 0; fd < anfdmax; ++fd) |
428 | for (fd = 0; fd < anfdmax; ++fd) |
265 | if (anfds [fd].events) |
429 | if (anfds [fd].events) |
266 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
430 | if (!fd_valid (fd) == -1 && errno == EBADF) |
267 | while (anfds [fd].head) |
431 | fd_kill (EV_A_ fd); |
|
|
432 | } |
|
|
433 | |
|
|
434 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
435 | static void |
|
|
436 | fd_enomem (EV_P) |
|
|
437 | { |
|
|
438 | int fd; |
|
|
439 | |
|
|
440 | for (fd = anfdmax; fd--; ) |
|
|
441 | if (anfds [fd].events) |
268 | { |
442 | { |
269 | ev_io_stop (anfds [fd].head); |
443 | fd_kill (EV_A_ fd); |
270 | event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE); |
444 | return; |
271 | } |
445 | } |
|
|
446 | } |
|
|
447 | |
|
|
448 | /* usually called after fork if method needs to re-arm all fds from scratch */ |
|
|
449 | static void |
|
|
450 | fd_rearm_all (EV_P) |
|
|
451 | { |
|
|
452 | int fd; |
|
|
453 | |
|
|
454 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
455 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
456 | if (anfds [fd].events) |
|
|
457 | { |
|
|
458 | anfds [fd].events = 0; |
|
|
459 | fd_change (EV_A_ fd); |
|
|
460 | } |
272 | } |
461 | } |
273 | |
462 | |
274 | /*****************************************************************************/ |
463 | /*****************************************************************************/ |
275 | |
464 | |
276 | static struct ev_timer **timers; |
|
|
277 | static int timermax, timercnt; |
|
|
278 | |
|
|
279 | static struct ev_periodic **periodics; |
|
|
280 | static int periodicmax, periodiccnt; |
|
|
281 | |
|
|
282 | static void |
465 | static void |
283 | upheap (WT *timers, int k) |
466 | upheap (WT *heap, int k) |
284 | { |
467 | { |
285 | WT w = timers [k]; |
468 | WT w = heap [k]; |
286 | |
469 | |
287 | while (k && timers [k >> 1]->at > w->at) |
470 | while (k && heap [k >> 1]->at > w->at) |
288 | { |
471 | { |
289 | timers [k] = timers [k >> 1]; |
472 | heap [k] = heap [k >> 1]; |
290 | timers [k]->active = k + 1; |
473 | ((W)heap [k])->active = k + 1; |
291 | k >>= 1; |
474 | k >>= 1; |
292 | } |
475 | } |
293 | |
476 | |
294 | timers [k] = w; |
477 | heap [k] = w; |
295 | timers [k]->active = k + 1; |
478 | ((W)heap [k])->active = k + 1; |
296 | |
479 | |
297 | } |
480 | } |
298 | |
481 | |
299 | static void |
482 | static void |
300 | downheap (WT *timers, int N, int k) |
483 | downheap (WT *heap, int N, int k) |
301 | { |
484 | { |
302 | WT w = timers [k]; |
485 | WT w = heap [k]; |
303 | |
486 | |
304 | while (k < (N >> 1)) |
487 | while (k < (N >> 1)) |
305 | { |
488 | { |
306 | int j = k << 1; |
489 | int j = k << 1; |
307 | |
490 | |
308 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
491 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
309 | ++j; |
492 | ++j; |
310 | |
493 | |
311 | if (w->at <= timers [j]->at) |
494 | if (w->at <= heap [j]->at) |
312 | break; |
495 | break; |
313 | |
496 | |
314 | timers [k] = timers [j]; |
497 | heap [k] = heap [j]; |
315 | timers [k]->active = k + 1; |
498 | ((W)heap [k])->active = k + 1; |
316 | k = j; |
499 | k = j; |
317 | } |
500 | } |
318 | |
501 | |
319 | timers [k] = w; |
502 | heap [k] = w; |
320 | timers [k]->active = k + 1; |
503 | ((W)heap [k])->active = k + 1; |
321 | } |
504 | } |
322 | |
505 | |
323 | /*****************************************************************************/ |
506 | /*****************************************************************************/ |
324 | |
507 | |
325 | typedef struct |
508 | typedef struct |
326 | { |
509 | { |
327 | struct ev_signal *head; |
510 | WL head; |
328 | sig_atomic_t gotsig; |
511 | sig_atomic_t volatile gotsig; |
329 | } ANSIG; |
512 | } ANSIG; |
330 | |
513 | |
331 | static ANSIG *signals; |
514 | static ANSIG *signals; |
332 | static int signalmax; |
515 | static int signalmax; |
333 | |
516 | |
334 | static int sigpipe [2]; |
517 | static int sigpipe [2]; |
335 | static sig_atomic_t gotsig; |
518 | static sig_atomic_t volatile gotsig; |
336 | static struct ev_io sigev; |
519 | static struct ev_io sigev; |
337 | |
520 | |
338 | static void |
521 | static void |
339 | signals_init (ANSIG *base, int count) |
522 | signals_init (ANSIG *base, int count) |
340 | { |
523 | { |
… | |
… | |
348 | } |
531 | } |
349 | |
532 | |
350 | static void |
533 | static void |
351 | sighandler (int signum) |
534 | sighandler (int signum) |
352 | { |
535 | { |
|
|
536 | #if WIN32 |
|
|
537 | signal (signum, sighandler); |
|
|
538 | #endif |
|
|
539 | |
353 | signals [signum - 1].gotsig = 1; |
540 | signals [signum - 1].gotsig = 1; |
354 | |
541 | |
355 | if (!gotsig) |
542 | if (!gotsig) |
356 | { |
543 | { |
|
|
544 | int old_errno = errno; |
357 | gotsig = 1; |
545 | gotsig = 1; |
358 | write (sigpipe [1], &gotsig, 1); |
546 | write (sigpipe [1], &signum, 1); |
|
|
547 | errno = old_errno; |
359 | } |
548 | } |
360 | } |
549 | } |
361 | |
550 | |
362 | static void |
551 | static void |
363 | sigcb (struct ev_io *iow, int revents) |
552 | sigcb (EV_P_ struct ev_io *iow, int revents) |
364 | { |
553 | { |
365 | struct ev_signal *w; |
554 | WL w; |
366 | int sig; |
555 | int signum; |
367 | |
556 | |
|
|
557 | read (sigpipe [0], &revents, 1); |
368 | gotsig = 0; |
558 | gotsig = 0; |
369 | read (sigpipe [0], &revents, 1); |
|
|
370 | |
559 | |
371 | for (sig = signalmax; sig--; ) |
560 | for (signum = signalmax; signum--; ) |
372 | if (signals [sig].gotsig) |
561 | if (signals [signum].gotsig) |
373 | { |
562 | { |
374 | signals [sig].gotsig = 0; |
563 | signals [signum].gotsig = 0; |
375 | |
564 | |
376 | for (w = signals [sig].head; w; w = w->next) |
565 | for (w = signals [signum].head; w; w = w->next) |
377 | event ((W)w, EV_SIGNAL); |
566 | event (EV_A_ (W)w, EV_SIGNAL); |
378 | } |
567 | } |
379 | } |
568 | } |
380 | |
569 | |
381 | static void |
570 | static void |
382 | siginit (void) |
571 | siginit (EV_P) |
383 | { |
572 | { |
|
|
573 | #ifndef WIN32 |
384 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
574 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
385 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
575 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
386 | |
576 | |
387 | /* rather than sort out wether we really need nb, set it */ |
577 | /* rather than sort out wether we really need nb, set it */ |
388 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
578 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
389 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
579 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
580 | #endif |
390 | |
581 | |
391 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
582 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
392 | ev_io_start (&sigev); |
583 | ev_io_start (EV_A_ &sigev); |
|
|
584 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
393 | } |
585 | } |
394 | |
586 | |
395 | /*****************************************************************************/ |
587 | /*****************************************************************************/ |
396 | |
588 | |
397 | static struct ev_idle **idles; |
|
|
398 | static int idlemax, idlecnt; |
|
|
399 | |
|
|
400 | static struct ev_prepare **prepares; |
|
|
401 | static int preparemax, preparecnt; |
|
|
402 | |
|
|
403 | static struct ev_check **checks; |
|
|
404 | static int checkmax, checkcnt; |
|
|
405 | |
|
|
406 | /*****************************************************************************/ |
|
|
407 | |
|
|
408 | static struct ev_child *childs [PID_HASHSIZE]; |
589 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
590 | |
|
|
591 | #ifndef WIN32 |
|
|
592 | |
409 | static struct ev_signal childev; |
593 | static struct ev_signal childev; |
410 | |
594 | |
411 | #ifndef WCONTINUED |
595 | #ifndef WCONTINUED |
412 | # define WCONTINUED 0 |
596 | # define WCONTINUED 0 |
413 | #endif |
597 | #endif |
414 | |
598 | |
415 | static void |
599 | static void |
416 | childcb (struct ev_signal *sw, int revents) |
600 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
417 | { |
601 | { |
418 | struct ev_child *w; |
602 | struct ev_child *w; |
|
|
603 | |
|
|
604 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
605 | if (w->pid == pid || !w->pid) |
|
|
606 | { |
|
|
607 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
|
|
608 | w->rpid = pid; |
|
|
609 | w->rstatus = status; |
|
|
610 | event (EV_A_ (W)w, EV_CHILD); |
|
|
611 | } |
|
|
612 | } |
|
|
613 | |
|
|
614 | static void |
|
|
615 | childcb (EV_P_ struct ev_signal *sw, int revents) |
|
|
616 | { |
419 | int pid, status; |
617 | int pid, status; |
420 | |
618 | |
421 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
619 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
422 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
620 | { |
423 | if (w->pid == pid || w->pid == -1) |
621 | /* make sure we are called again until all childs have been reaped */ |
424 | { |
622 | event (EV_A_ (W)sw, EV_SIGNAL); |
425 | w->status = status; |
623 | |
426 | event ((W)w, EV_CHILD); |
624 | child_reap (EV_A_ sw, pid, pid, status); |
427 | } |
625 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
|
|
626 | } |
428 | } |
627 | } |
|
|
628 | |
|
|
629 | #endif |
429 | |
630 | |
430 | /*****************************************************************************/ |
631 | /*****************************************************************************/ |
431 | |
632 | |
|
|
633 | #if EV_USE_KQUEUE |
|
|
634 | # include "ev_kqueue.c" |
|
|
635 | #endif |
432 | #if EV_USE_EPOLL |
636 | #if EV_USE_EPOLL |
433 | # include "ev_epoll.c" |
637 | # include "ev_epoll.c" |
434 | #endif |
638 | #endif |
|
|
639 | #if EV_USE_POLL |
|
|
640 | # include "ev_poll.c" |
|
|
641 | #endif |
435 | #if EV_USE_SELECT |
642 | #if EV_USE_SELECT |
436 | # include "ev_select.c" |
643 | # include "ev_select.c" |
437 | #endif |
644 | #endif |
438 | |
645 | |
439 | int |
646 | int |
… | |
… | |
446 | ev_version_minor (void) |
653 | ev_version_minor (void) |
447 | { |
654 | { |
448 | return EV_VERSION_MINOR; |
655 | return EV_VERSION_MINOR; |
449 | } |
656 | } |
450 | |
657 | |
451 | int ev_init (int flags) |
658 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
659 | static int |
|
|
660 | enable_secure (void) |
452 | { |
661 | { |
|
|
662 | #ifdef WIN32 |
|
|
663 | return 0; |
|
|
664 | #else |
|
|
665 | return getuid () != geteuid () |
|
|
666 | || getgid () != getegid (); |
|
|
667 | #endif |
|
|
668 | } |
|
|
669 | |
|
|
670 | int |
|
|
671 | ev_method (EV_P) |
|
|
672 | { |
|
|
673 | return method; |
|
|
674 | } |
|
|
675 | |
|
|
676 | static void |
|
|
677 | loop_init (EV_P_ int methods) |
|
|
678 | { |
453 | if (!ev_method) |
679 | if (!method) |
454 | { |
680 | { |
455 | #if EV_USE_MONOTONIC |
681 | #if EV_USE_MONOTONIC |
456 | { |
682 | { |
457 | struct timespec ts; |
683 | struct timespec ts; |
458 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
684 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
459 | have_monotonic = 1; |
685 | have_monotonic = 1; |
460 | } |
686 | } |
461 | #endif |
687 | #endif |
462 | |
688 | |
463 | ev_now = ev_time (); |
689 | rt_now = ev_time (); |
464 | now = get_clock (); |
690 | mn_now = get_clock (); |
|
|
691 | now_floor = mn_now; |
465 | diff = ev_now - now; |
692 | rtmn_diff = rt_now - mn_now; |
466 | |
693 | |
467 | if (pipe (sigpipe)) |
694 | if (methods == EVMETHOD_AUTO) |
468 | return 0; |
695 | if (!enable_secure () && getenv ("LIBEV_METHODS")) |
469 | |
696 | methods = atoi (getenv ("LIBEV_METHODS")); |
|
|
697 | else |
470 | ev_method = EVMETHOD_NONE; |
698 | methods = EVMETHOD_ANY; |
|
|
699 | |
|
|
700 | method = 0; |
|
|
701 | #if EV_USE_WIN32 |
|
|
702 | if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); |
|
|
703 | #endif |
|
|
704 | #if EV_USE_KQUEUE |
|
|
705 | if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); |
|
|
706 | #endif |
471 | #if EV_USE_EPOLL |
707 | #if EV_USE_EPOLL |
472 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
708 | if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); |
|
|
709 | #endif |
|
|
710 | #if EV_USE_POLL |
|
|
711 | if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); |
473 | #endif |
712 | #endif |
474 | #if EV_USE_SELECT |
713 | #if EV_USE_SELECT |
475 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
714 | if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); |
476 | #endif |
715 | #endif |
477 | |
716 | |
|
|
717 | ev_watcher_init (&sigev, sigcb); |
|
|
718 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
719 | } |
|
|
720 | } |
|
|
721 | |
|
|
722 | void |
|
|
723 | loop_destroy (EV_P) |
|
|
724 | { |
|
|
725 | int i; |
|
|
726 | |
|
|
727 | #if EV_USE_WIN32 |
|
|
728 | if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); |
|
|
729 | #endif |
|
|
730 | #if EV_USE_KQUEUE |
|
|
731 | if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); |
|
|
732 | #endif |
|
|
733 | #if EV_USE_EPOLL |
|
|
734 | if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); |
|
|
735 | #endif |
|
|
736 | #if EV_USE_POLL |
|
|
737 | if (method == EVMETHOD_POLL ) poll_destroy (EV_A); |
|
|
738 | #endif |
|
|
739 | #if EV_USE_SELECT |
|
|
740 | if (method == EVMETHOD_SELECT) select_destroy (EV_A); |
|
|
741 | #endif |
|
|
742 | |
|
|
743 | for (i = NUMPRI; i--; ) |
|
|
744 | array_free (pending, [i]); |
|
|
745 | |
|
|
746 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
747 | array_free_microshit (fdchange); |
|
|
748 | array_free_microshit (timer); |
|
|
749 | array_free_microshit (periodic); |
|
|
750 | array_free_microshit (idle); |
|
|
751 | array_free_microshit (prepare); |
|
|
752 | array_free_microshit (check); |
|
|
753 | |
|
|
754 | method = 0; |
|
|
755 | } |
|
|
756 | |
|
|
757 | static void |
|
|
758 | loop_fork (EV_P) |
|
|
759 | { |
|
|
760 | #if EV_USE_EPOLL |
|
|
761 | if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); |
|
|
762 | #endif |
|
|
763 | #if EV_USE_KQUEUE |
|
|
764 | if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); |
|
|
765 | #endif |
|
|
766 | |
|
|
767 | if (ev_is_active (&sigev)) |
|
|
768 | { |
|
|
769 | /* default loop */ |
|
|
770 | |
|
|
771 | ev_ref (EV_A); |
|
|
772 | ev_io_stop (EV_A_ &sigev); |
|
|
773 | close (sigpipe [0]); |
|
|
774 | close (sigpipe [1]); |
|
|
775 | |
|
|
776 | while (pipe (sigpipe)) |
|
|
777 | syserr ("(libev) error creating pipe"); |
|
|
778 | |
|
|
779 | siginit (EV_A); |
|
|
780 | } |
|
|
781 | |
|
|
782 | postfork = 0; |
|
|
783 | } |
|
|
784 | |
|
|
785 | #if EV_MULTIPLICITY |
|
|
786 | struct ev_loop * |
|
|
787 | ev_loop_new (int methods) |
|
|
788 | { |
|
|
789 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
790 | |
|
|
791 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
792 | |
|
|
793 | loop_init (EV_A_ methods); |
|
|
794 | |
|
|
795 | if (ev_method (EV_A)) |
|
|
796 | return loop; |
|
|
797 | |
|
|
798 | return 0; |
|
|
799 | } |
|
|
800 | |
|
|
801 | void |
|
|
802 | ev_loop_destroy (EV_P) |
|
|
803 | { |
|
|
804 | loop_destroy (EV_A); |
|
|
805 | ev_free (loop); |
|
|
806 | } |
|
|
807 | |
|
|
808 | void |
|
|
809 | ev_loop_fork (EV_P) |
|
|
810 | { |
|
|
811 | postfork = 1; |
|
|
812 | } |
|
|
813 | |
|
|
814 | #endif |
|
|
815 | |
|
|
816 | #if EV_MULTIPLICITY |
|
|
817 | struct ev_loop default_loop_struct; |
|
|
818 | static struct ev_loop *default_loop; |
|
|
819 | |
|
|
820 | struct ev_loop * |
|
|
821 | #else |
|
|
822 | static int default_loop; |
|
|
823 | |
|
|
824 | int |
|
|
825 | #endif |
|
|
826 | ev_default_loop (int methods) |
|
|
827 | { |
|
|
828 | if (sigpipe [0] == sigpipe [1]) |
|
|
829 | if (pipe (sigpipe)) |
|
|
830 | return 0; |
|
|
831 | |
|
|
832 | if (!default_loop) |
|
|
833 | { |
|
|
834 | #if EV_MULTIPLICITY |
|
|
835 | struct ev_loop *loop = default_loop = &default_loop_struct; |
|
|
836 | #else |
|
|
837 | default_loop = 1; |
|
|
838 | #endif |
|
|
839 | |
|
|
840 | loop_init (EV_A_ methods); |
|
|
841 | |
478 | if (ev_method) |
842 | if (ev_method (EV_A)) |
479 | { |
843 | { |
480 | ev_watcher_init (&sigev, sigcb); |
|
|
481 | siginit (); |
844 | siginit (EV_A); |
482 | |
845 | |
|
|
846 | #ifndef WIN32 |
483 | ev_signal_init (&childev, childcb, SIGCHLD); |
847 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
848 | ev_set_priority (&childev, EV_MAXPRI); |
484 | ev_signal_start (&childev); |
849 | ev_signal_start (EV_A_ &childev); |
|
|
850 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
851 | #endif |
485 | } |
852 | } |
|
|
853 | else |
|
|
854 | default_loop = 0; |
486 | } |
855 | } |
487 | |
856 | |
488 | return ev_method; |
857 | return default_loop; |
|
|
858 | } |
|
|
859 | |
|
|
860 | void |
|
|
861 | ev_default_destroy (void) |
|
|
862 | { |
|
|
863 | #if EV_MULTIPLICITY |
|
|
864 | struct ev_loop *loop = default_loop; |
|
|
865 | #endif |
|
|
866 | |
|
|
867 | #ifndef WIN32 |
|
|
868 | ev_ref (EV_A); /* child watcher */ |
|
|
869 | ev_signal_stop (EV_A_ &childev); |
|
|
870 | #endif |
|
|
871 | |
|
|
872 | ev_ref (EV_A); /* signal watcher */ |
|
|
873 | ev_io_stop (EV_A_ &sigev); |
|
|
874 | |
|
|
875 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
876 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
877 | |
|
|
878 | loop_destroy (EV_A); |
|
|
879 | } |
|
|
880 | |
|
|
881 | void |
|
|
882 | ev_default_fork (void) |
|
|
883 | { |
|
|
884 | #if EV_MULTIPLICITY |
|
|
885 | struct ev_loop *loop = default_loop; |
|
|
886 | #endif |
|
|
887 | |
|
|
888 | if (method) |
|
|
889 | postfork = 1; |
489 | } |
890 | } |
490 | |
891 | |
491 | /*****************************************************************************/ |
892 | /*****************************************************************************/ |
492 | |
893 | |
493 | void |
|
|
494 | ev_prefork (void) |
|
|
495 | { |
|
|
496 | /* nop */ |
|
|
497 | } |
|
|
498 | |
|
|
499 | void |
|
|
500 | ev_postfork_parent (void) |
|
|
501 | { |
|
|
502 | /* nop */ |
|
|
503 | } |
|
|
504 | |
|
|
505 | void |
|
|
506 | ev_postfork_child (void) |
|
|
507 | { |
|
|
508 | #if EV_USE_EPOLL |
|
|
509 | if (ev_method == EVMETHOD_EPOLL) |
|
|
510 | epoll_postfork_child (); |
|
|
511 | #endif |
|
|
512 | |
|
|
513 | ev_io_stop (&sigev); |
|
|
514 | close (sigpipe [0]); |
|
|
515 | close (sigpipe [1]); |
|
|
516 | pipe (sigpipe); |
|
|
517 | siginit (); |
|
|
518 | } |
|
|
519 | |
|
|
520 | /*****************************************************************************/ |
|
|
521 | |
|
|
522 | static void |
894 | static void |
523 | call_pending (void) |
895 | call_pending (EV_P) |
524 | { |
896 | { |
|
|
897 | int pri; |
|
|
898 | |
|
|
899 | for (pri = NUMPRI; pri--; ) |
525 | while (pendingcnt) |
900 | while (pendingcnt [pri]) |
526 | { |
901 | { |
527 | ANPENDING *p = pendings + --pendingcnt; |
902 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
528 | |
903 | |
529 | if (p->w) |
904 | if (p->w) |
530 | { |
905 | { |
531 | p->w->pending = 0; |
906 | p->w->pending = 0; |
532 | p->w->cb (p->w, p->events); |
907 | p->w->cb (EV_A_ p->w, p->events); |
533 | } |
908 | } |
534 | } |
909 | } |
535 | } |
910 | } |
536 | |
911 | |
537 | static void |
912 | static void |
538 | timers_reify (void) |
913 | timers_reify (EV_P) |
539 | { |
914 | { |
540 | while (timercnt && timers [0]->at <= now) |
915 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
541 | { |
916 | { |
542 | struct ev_timer *w = timers [0]; |
917 | struct ev_timer *w = timers [0]; |
|
|
918 | |
|
|
919 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
543 | |
920 | |
544 | /* first reschedule or stop timer */ |
921 | /* first reschedule or stop timer */ |
545 | if (w->repeat) |
922 | if (w->repeat) |
546 | { |
923 | { |
547 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
924 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
548 | w->at = now + w->repeat; |
925 | ((WT)w)->at = mn_now + w->repeat; |
549 | downheap ((WT *)timers, timercnt, 0); |
926 | downheap ((WT *)timers, timercnt, 0); |
550 | } |
927 | } |
551 | else |
928 | else |
552 | ev_timer_stop (w); /* nonrepeating: stop timer */ |
929 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
553 | |
930 | |
554 | event ((W)w, EV_TIMEOUT); |
931 | event (EV_A_ (W)w, EV_TIMEOUT); |
555 | } |
932 | } |
556 | } |
933 | } |
557 | |
934 | |
558 | static void |
935 | static void |
559 | periodics_reify (void) |
936 | periodics_reify (EV_P) |
560 | { |
937 | { |
561 | while (periodiccnt && periodics [0]->at <= ev_now) |
938 | while (periodiccnt && ((WT)periodics [0])->at <= rt_now) |
562 | { |
939 | { |
563 | struct ev_periodic *w = periodics [0]; |
940 | struct ev_periodic *w = periodics [0]; |
|
|
941 | |
|
|
942 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
564 | |
943 | |
565 | /* first reschedule or stop timer */ |
944 | /* first reschedule or stop timer */ |
566 | if (w->interval) |
945 | if (w->interval) |
567 | { |
946 | { |
568 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
947 | ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
569 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now)); |
948 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); |
570 | downheap ((WT *)periodics, periodiccnt, 0); |
949 | downheap ((WT *)periodics, periodiccnt, 0); |
571 | } |
950 | } |
572 | else |
951 | else |
573 | ev_periodic_stop (w); /* nonrepeating: stop timer */ |
952 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
574 | |
953 | |
575 | event ((W)w, EV_PERIODIC); |
954 | event (EV_A_ (W)w, EV_PERIODIC); |
576 | } |
955 | } |
577 | } |
956 | } |
578 | |
957 | |
579 | static void |
958 | static void |
580 | periodics_reschedule (ev_tstamp diff) |
959 | periodics_reschedule (EV_P) |
581 | { |
960 | { |
582 | int i; |
961 | int i; |
583 | |
962 | |
584 | /* adjust periodics after time jump */ |
963 | /* adjust periodics after time jump */ |
585 | for (i = 0; i < periodiccnt; ++i) |
964 | for (i = 0; i < periodiccnt; ++i) |
586 | { |
965 | { |
587 | struct ev_periodic *w = periodics [i]; |
966 | struct ev_periodic *w = periodics [i]; |
588 | |
967 | |
589 | if (w->interval) |
968 | if (w->interval) |
590 | { |
969 | { |
591 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
970 | ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; |
592 | |
971 | |
593 | if (fabs (diff) >= 1e-4) |
972 | if (fabs (diff) >= 1e-4) |
594 | { |
973 | { |
595 | ev_periodic_stop (w); |
974 | ev_periodic_stop (EV_A_ w); |
596 | ev_periodic_start (w); |
975 | ev_periodic_start (EV_A_ w); |
597 | |
976 | |
598 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
977 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
599 | } |
978 | } |
600 | } |
979 | } |
601 | } |
980 | } |
602 | } |
981 | } |
603 | |
982 | |
|
|
983 | inline int |
|
|
984 | time_update_monotonic (EV_P) |
|
|
985 | { |
|
|
986 | mn_now = get_clock (); |
|
|
987 | |
|
|
988 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
989 | { |
|
|
990 | rt_now = rtmn_diff + mn_now; |
|
|
991 | return 0; |
|
|
992 | } |
|
|
993 | else |
|
|
994 | { |
|
|
995 | now_floor = mn_now; |
|
|
996 | rt_now = ev_time (); |
|
|
997 | return 1; |
|
|
998 | } |
|
|
999 | } |
|
|
1000 | |
604 | static void |
1001 | static void |
605 | time_update (void) |
1002 | time_update (EV_P) |
606 | { |
1003 | { |
607 | int i; |
1004 | int i; |
608 | |
1005 | |
609 | ev_now = ev_time (); |
1006 | #if EV_USE_MONOTONIC |
610 | |
|
|
611 | if (have_monotonic) |
1007 | if (expect_true (have_monotonic)) |
612 | { |
1008 | { |
613 | ev_tstamp odiff = diff; |
1009 | if (time_update_monotonic (EV_A)) |
614 | |
|
|
615 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
616 | { |
1010 | { |
617 | now = get_clock (); |
1011 | ev_tstamp odiff = rtmn_diff; |
|
|
1012 | |
|
|
1013 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
1014 | { |
618 | diff = ev_now - now; |
1015 | rtmn_diff = rt_now - mn_now; |
619 | |
1016 | |
620 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
1017 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
621 | return; /* all is well */ |
1018 | return; /* all is well */ |
622 | |
1019 | |
623 | ev_now = ev_time (); |
1020 | rt_now = ev_time (); |
|
|
1021 | mn_now = get_clock (); |
|
|
1022 | now_floor = mn_now; |
|
|
1023 | } |
|
|
1024 | |
|
|
1025 | periodics_reschedule (EV_A); |
|
|
1026 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1027 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
624 | } |
1028 | } |
625 | |
|
|
626 | periodics_reschedule (diff - odiff); |
|
|
627 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
628 | } |
1029 | } |
629 | else |
1030 | else |
|
|
1031 | #endif |
630 | { |
1032 | { |
631 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
1033 | rt_now = ev_time (); |
|
|
1034 | |
|
|
1035 | if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
632 | { |
1036 | { |
633 | periodics_reschedule (ev_now - now); |
1037 | periodics_reschedule (EV_A); |
634 | |
1038 | |
635 | /* adjust timers. this is easy, as the offset is the same for all */ |
1039 | /* adjust timers. this is easy, as the offset is the same for all */ |
636 | for (i = 0; i < timercnt; ++i) |
1040 | for (i = 0; i < timercnt; ++i) |
637 | timers [i]->at += diff; |
1041 | ((WT)timers [i])->at += rt_now - mn_now; |
638 | } |
1042 | } |
639 | |
1043 | |
640 | now = ev_now; |
1044 | mn_now = rt_now; |
641 | } |
1045 | } |
642 | } |
1046 | } |
643 | |
1047 | |
644 | int ev_loop_done; |
1048 | void |
|
|
1049 | ev_ref (EV_P) |
|
|
1050 | { |
|
|
1051 | ++activecnt; |
|
|
1052 | } |
645 | |
1053 | |
|
|
1054 | void |
|
|
1055 | ev_unref (EV_P) |
|
|
1056 | { |
|
|
1057 | --activecnt; |
|
|
1058 | } |
|
|
1059 | |
|
|
1060 | static int loop_done; |
|
|
1061 | |
|
|
1062 | void |
646 | void ev_loop (int flags) |
1063 | ev_loop (EV_P_ int flags) |
647 | { |
1064 | { |
648 | double block; |
1065 | double block; |
649 | ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
1066 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
650 | |
1067 | |
651 | do |
1068 | do |
652 | { |
1069 | { |
653 | /* queue check watchers (and execute them) */ |
1070 | /* queue check watchers (and execute them) */ |
654 | if (preparecnt) |
1071 | if (expect_false (preparecnt)) |
655 | { |
1072 | { |
656 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
1073 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
657 | call_pending (); |
1074 | call_pending (EV_A); |
658 | } |
1075 | } |
659 | |
1076 | |
|
|
1077 | /* we might have forked, so reify kernel state if necessary */ |
|
|
1078 | if (expect_false (postfork)) |
|
|
1079 | loop_fork (EV_A); |
|
|
1080 | |
660 | /* update fd-related kernel structures */ |
1081 | /* update fd-related kernel structures */ |
661 | fd_reify (); |
1082 | fd_reify (EV_A); |
662 | |
1083 | |
663 | /* calculate blocking time */ |
1084 | /* calculate blocking time */ |
664 | |
1085 | |
665 | /* we only need this for !monotonic clockor timers, but as we basically |
1086 | /* we only need this for !monotonic clockor timers, but as we basically |
666 | always have timers, we just calculate it always */ |
1087 | always have timers, we just calculate it always */ |
|
|
1088 | #if EV_USE_MONOTONIC |
|
|
1089 | if (expect_true (have_monotonic)) |
|
|
1090 | time_update_monotonic (EV_A); |
|
|
1091 | else |
|
|
1092 | #endif |
|
|
1093 | { |
667 | ev_now = ev_time (); |
1094 | rt_now = ev_time (); |
|
|
1095 | mn_now = rt_now; |
|
|
1096 | } |
668 | |
1097 | |
669 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
1098 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
670 | block = 0.; |
1099 | block = 0.; |
671 | else |
1100 | else |
672 | { |
1101 | { |
673 | block = MAX_BLOCKTIME; |
1102 | block = MAX_BLOCKTIME; |
674 | |
1103 | |
675 | if (timercnt) |
1104 | if (timercnt) |
676 | { |
1105 | { |
677 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
1106 | ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; |
678 | if (block > to) block = to; |
1107 | if (block > to) block = to; |
679 | } |
1108 | } |
680 | |
1109 | |
681 | if (periodiccnt) |
1110 | if (periodiccnt) |
682 | { |
1111 | { |
683 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
1112 | ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; |
684 | if (block > to) block = to; |
1113 | if (block > to) block = to; |
685 | } |
1114 | } |
686 | |
1115 | |
687 | if (block < 0.) block = 0.; |
1116 | if (block < 0.) block = 0.; |
688 | } |
1117 | } |
689 | |
1118 | |
690 | method_poll (block); |
1119 | method_poll (EV_A_ block); |
691 | |
1120 | |
692 | /* update ev_now, do magic */ |
1121 | /* update rt_now, do magic */ |
693 | time_update (); |
1122 | time_update (EV_A); |
694 | |
1123 | |
695 | /* queue pending timers and reschedule them */ |
1124 | /* queue pending timers and reschedule them */ |
696 | timers_reify (); /* relative timers called last */ |
1125 | timers_reify (EV_A); /* relative timers called last */ |
697 | periodics_reify (); /* absolute timers called first */ |
1126 | periodics_reify (EV_A); /* absolute timers called first */ |
698 | |
1127 | |
699 | /* queue idle watchers unless io or timers are pending */ |
1128 | /* queue idle watchers unless io or timers are pending */ |
700 | if (!pendingcnt) |
1129 | if (!pendingcnt) |
701 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
1130 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
702 | |
1131 | |
703 | /* queue check watchers, to be executed first */ |
1132 | /* queue check watchers, to be executed first */ |
704 | if (checkcnt) |
1133 | if (checkcnt) |
705 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1134 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
706 | |
1135 | |
707 | call_pending (); |
1136 | call_pending (EV_A); |
708 | } |
1137 | } |
709 | while (!ev_loop_done); |
1138 | while (activecnt && !loop_done); |
710 | |
1139 | |
711 | if (ev_loop_done != 2) |
1140 | if (loop_done != 2) |
712 | ev_loop_done = 0; |
1141 | loop_done = 0; |
|
|
1142 | } |
|
|
1143 | |
|
|
1144 | void |
|
|
1145 | ev_unloop (EV_P_ int how) |
|
|
1146 | { |
|
|
1147 | loop_done = how; |
713 | } |
1148 | } |
714 | |
1149 | |
715 | /*****************************************************************************/ |
1150 | /*****************************************************************************/ |
716 | |
1151 | |
717 | static void |
1152 | inline void |
718 | wlist_add (WL *head, WL elem) |
1153 | wlist_add (WL *head, WL elem) |
719 | { |
1154 | { |
720 | elem->next = *head; |
1155 | elem->next = *head; |
721 | *head = elem; |
1156 | *head = elem; |
722 | } |
1157 | } |
723 | |
1158 | |
724 | static void |
1159 | inline void |
725 | wlist_del (WL *head, WL elem) |
1160 | wlist_del (WL *head, WL elem) |
726 | { |
1161 | { |
727 | while (*head) |
1162 | while (*head) |
728 | { |
1163 | { |
729 | if (*head == elem) |
1164 | if (*head == elem) |
… | |
… | |
734 | |
1169 | |
735 | head = &(*head)->next; |
1170 | head = &(*head)->next; |
736 | } |
1171 | } |
737 | } |
1172 | } |
738 | |
1173 | |
739 | static void |
1174 | inline void |
740 | ev_clear_pending (W w) |
1175 | ev_clear_pending (EV_P_ W w) |
741 | { |
1176 | { |
742 | if (w->pending) |
1177 | if (w->pending) |
743 | { |
1178 | { |
744 | pendings [w->pending - 1].w = 0; |
1179 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
745 | w->pending = 0; |
1180 | w->pending = 0; |
746 | } |
1181 | } |
747 | } |
1182 | } |
748 | |
1183 | |
749 | static void |
1184 | inline void |
750 | ev_start (W w, int active) |
1185 | ev_start (EV_P_ W w, int active) |
751 | { |
1186 | { |
|
|
1187 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1188 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1189 | |
752 | w->active = active; |
1190 | w->active = active; |
|
|
1191 | ev_ref (EV_A); |
753 | } |
1192 | } |
754 | |
1193 | |
755 | static void |
1194 | inline void |
756 | ev_stop (W w) |
1195 | ev_stop (EV_P_ W w) |
757 | { |
1196 | { |
|
|
1197 | ev_unref (EV_A); |
758 | w->active = 0; |
1198 | w->active = 0; |
759 | } |
1199 | } |
760 | |
1200 | |
761 | /*****************************************************************************/ |
1201 | /*****************************************************************************/ |
762 | |
1202 | |
763 | void |
1203 | void |
764 | ev_io_start (struct ev_io *w) |
1204 | ev_io_start (EV_P_ struct ev_io *w) |
765 | { |
1205 | { |
|
|
1206 | int fd = w->fd; |
|
|
1207 | |
766 | if (ev_is_active (w)) |
1208 | if (ev_is_active (w)) |
767 | return; |
1209 | return; |
768 | |
1210 | |
769 | int fd = w->fd; |
|
|
770 | |
|
|
771 | assert (("ev_io_start called with negative fd", fd >= 0)); |
1211 | assert (("ev_io_start called with negative fd", fd >= 0)); |
772 | |
1212 | |
773 | ev_start ((W)w, 1); |
1213 | ev_start (EV_A_ (W)w, 1); |
774 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1214 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
775 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1215 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
776 | |
1216 | |
777 | fd_change (fd); |
1217 | fd_change (EV_A_ fd); |
778 | } |
1218 | } |
779 | |
1219 | |
780 | void |
1220 | void |
781 | ev_io_stop (struct ev_io *w) |
1221 | ev_io_stop (EV_P_ struct ev_io *w) |
782 | { |
1222 | { |
783 | ev_clear_pending ((W)w); |
1223 | ev_clear_pending (EV_A_ (W)w); |
784 | if (!ev_is_active (w)) |
1224 | if (!ev_is_active (w)) |
785 | return; |
1225 | return; |
786 | |
1226 | |
787 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1227 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
788 | ev_stop ((W)w); |
1228 | ev_stop (EV_A_ (W)w); |
789 | |
1229 | |
790 | fd_change (w->fd); |
1230 | fd_change (EV_A_ w->fd); |
791 | } |
1231 | } |
792 | |
1232 | |
793 | void |
1233 | void |
794 | ev_timer_start (struct ev_timer *w) |
1234 | ev_timer_start (EV_P_ struct ev_timer *w) |
795 | { |
1235 | { |
796 | if (ev_is_active (w)) |
1236 | if (ev_is_active (w)) |
797 | return; |
1237 | return; |
798 | |
1238 | |
799 | w->at += now; |
1239 | ((WT)w)->at += mn_now; |
800 | |
1240 | |
801 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
1241 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
802 | |
1242 | |
803 | ev_start ((W)w, ++timercnt); |
1243 | ev_start (EV_A_ (W)w, ++timercnt); |
804 | array_needsize (timers, timermax, timercnt, ); |
1244 | array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); |
805 | timers [timercnt - 1] = w; |
1245 | timers [timercnt - 1] = w; |
806 | upheap ((WT *)timers, timercnt - 1); |
1246 | upheap ((WT *)timers, timercnt - 1); |
807 | } |
|
|
808 | |
1247 | |
|
|
1248 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1249 | } |
|
|
1250 | |
809 | void |
1251 | void |
810 | ev_timer_stop (struct ev_timer *w) |
1252 | ev_timer_stop (EV_P_ struct ev_timer *w) |
811 | { |
1253 | { |
812 | ev_clear_pending ((W)w); |
1254 | ev_clear_pending (EV_A_ (W)w); |
813 | if (!ev_is_active (w)) |
1255 | if (!ev_is_active (w)) |
814 | return; |
1256 | return; |
815 | |
1257 | |
|
|
1258 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1259 | |
816 | if (w->active < timercnt--) |
1260 | if (((W)w)->active < timercnt--) |
817 | { |
1261 | { |
818 | timers [w->active - 1] = timers [timercnt]; |
1262 | timers [((W)w)->active - 1] = timers [timercnt]; |
819 | downheap ((WT *)timers, timercnt, w->active - 1); |
1263 | downheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
820 | } |
1264 | } |
821 | |
1265 | |
822 | w->at = w->repeat; |
1266 | ((WT)w)->at = w->repeat; |
823 | |
1267 | |
824 | ev_stop ((W)w); |
1268 | ev_stop (EV_A_ (W)w); |
825 | } |
1269 | } |
826 | |
1270 | |
827 | void |
1271 | void |
828 | ev_timer_again (struct ev_timer *w) |
1272 | ev_timer_again (EV_P_ struct ev_timer *w) |
829 | { |
1273 | { |
830 | if (ev_is_active (w)) |
1274 | if (ev_is_active (w)) |
831 | { |
1275 | { |
832 | if (w->repeat) |
1276 | if (w->repeat) |
833 | { |
1277 | { |
834 | w->at = now + w->repeat; |
1278 | ((WT)w)->at = mn_now + w->repeat; |
835 | downheap ((WT *)timers, timercnt, w->active - 1); |
1279 | downheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
836 | } |
1280 | } |
837 | else |
1281 | else |
838 | ev_timer_stop (w); |
1282 | ev_timer_stop (EV_A_ w); |
839 | } |
1283 | } |
840 | else if (w->repeat) |
1284 | else if (w->repeat) |
841 | ev_timer_start (w); |
1285 | ev_timer_start (EV_A_ w); |
842 | } |
1286 | } |
843 | |
1287 | |
844 | void |
1288 | void |
845 | ev_periodic_start (struct ev_periodic *w) |
1289 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
846 | { |
1290 | { |
847 | if (ev_is_active (w)) |
1291 | if (ev_is_active (w)) |
848 | return; |
1292 | return; |
849 | |
1293 | |
850 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
1294 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
851 | |
1295 | |
852 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1296 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
853 | if (w->interval) |
1297 | if (w->interval) |
854 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
1298 | ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; |
855 | |
1299 | |
856 | ev_start ((W)w, ++periodiccnt); |
1300 | ev_start (EV_A_ (W)w, ++periodiccnt); |
857 | array_needsize (periodics, periodicmax, periodiccnt, ); |
1301 | array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); |
858 | periodics [periodiccnt - 1] = w; |
1302 | periodics [periodiccnt - 1] = w; |
859 | upheap ((WT *)periodics, periodiccnt - 1); |
1303 | upheap ((WT *)periodics, periodiccnt - 1); |
860 | } |
|
|
861 | |
1304 | |
|
|
1305 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1306 | } |
|
|
1307 | |
862 | void |
1308 | void |
863 | ev_periodic_stop (struct ev_periodic *w) |
1309 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
864 | { |
1310 | { |
865 | ev_clear_pending ((W)w); |
1311 | ev_clear_pending (EV_A_ (W)w); |
866 | if (!ev_is_active (w)) |
1312 | if (!ev_is_active (w)) |
867 | return; |
1313 | return; |
868 | |
1314 | |
|
|
1315 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1316 | |
869 | if (w->active < periodiccnt--) |
1317 | if (((W)w)->active < periodiccnt--) |
870 | { |
1318 | { |
871 | periodics [w->active - 1] = periodics [periodiccnt]; |
1319 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
872 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
1320 | downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
873 | } |
1321 | } |
874 | |
1322 | |
875 | ev_stop ((W)w); |
1323 | ev_stop (EV_A_ (W)w); |
876 | } |
1324 | } |
877 | |
1325 | |
878 | void |
1326 | void |
879 | ev_signal_start (struct ev_signal *w) |
1327 | ev_idle_start (EV_P_ struct ev_idle *w) |
880 | { |
1328 | { |
881 | if (ev_is_active (w)) |
1329 | if (ev_is_active (w)) |
882 | return; |
1330 | return; |
883 | |
1331 | |
|
|
1332 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1333 | array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void)); |
|
|
1334 | idles [idlecnt - 1] = w; |
|
|
1335 | } |
|
|
1336 | |
|
|
1337 | void |
|
|
1338 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1339 | { |
|
|
1340 | ev_clear_pending (EV_A_ (W)w); |
|
|
1341 | if (ev_is_active (w)) |
|
|
1342 | return; |
|
|
1343 | |
|
|
1344 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
|
|
1345 | ev_stop (EV_A_ (W)w); |
|
|
1346 | } |
|
|
1347 | |
|
|
1348 | void |
|
|
1349 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1350 | { |
|
|
1351 | if (ev_is_active (w)) |
|
|
1352 | return; |
|
|
1353 | |
|
|
1354 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1355 | array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void)); |
|
|
1356 | prepares [preparecnt - 1] = w; |
|
|
1357 | } |
|
|
1358 | |
|
|
1359 | void |
|
|
1360 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1361 | { |
|
|
1362 | ev_clear_pending (EV_A_ (W)w); |
|
|
1363 | if (ev_is_active (w)) |
|
|
1364 | return; |
|
|
1365 | |
|
|
1366 | prepares [((W)w)->active - 1] = prepares [--preparecnt]; |
|
|
1367 | ev_stop (EV_A_ (W)w); |
|
|
1368 | } |
|
|
1369 | |
|
|
1370 | void |
|
|
1371 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1372 | { |
|
|
1373 | if (ev_is_active (w)) |
|
|
1374 | return; |
|
|
1375 | |
|
|
1376 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1377 | array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void)); |
|
|
1378 | checks [checkcnt - 1] = w; |
|
|
1379 | } |
|
|
1380 | |
|
|
1381 | void |
|
|
1382 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1383 | { |
|
|
1384 | ev_clear_pending (EV_A_ (W)w); |
|
|
1385 | if (ev_is_active (w)) |
|
|
1386 | return; |
|
|
1387 | |
|
|
1388 | checks [((W)w)->active - 1] = checks [--checkcnt]; |
|
|
1389 | ev_stop (EV_A_ (W)w); |
|
|
1390 | } |
|
|
1391 | |
|
|
1392 | #ifndef SA_RESTART |
|
|
1393 | # define SA_RESTART 0 |
|
|
1394 | #endif |
|
|
1395 | |
|
|
1396 | void |
|
|
1397 | ev_signal_start (EV_P_ struct ev_signal *w) |
|
|
1398 | { |
|
|
1399 | #if EV_MULTIPLICITY |
|
|
1400 | assert (("signal watchers are only supported in the default loop", loop == default_loop)); |
|
|
1401 | #endif |
|
|
1402 | if (ev_is_active (w)) |
|
|
1403 | return; |
|
|
1404 | |
884 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
1405 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
885 | |
1406 | |
886 | ev_start ((W)w, 1); |
1407 | ev_start (EV_A_ (W)w, 1); |
887 | array_needsize (signals, signalmax, w->signum, signals_init); |
1408 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
888 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1409 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
889 | |
1410 | |
890 | if (!w->next) |
1411 | if (!((WL)w)->next) |
891 | { |
1412 | { |
|
|
1413 | #if WIN32 |
|
|
1414 | signal (w->signum, sighandler); |
|
|
1415 | #else |
892 | struct sigaction sa; |
1416 | struct sigaction sa; |
893 | sa.sa_handler = sighandler; |
1417 | sa.sa_handler = sighandler; |
894 | sigfillset (&sa.sa_mask); |
1418 | sigfillset (&sa.sa_mask); |
895 | sa.sa_flags = 0; |
1419 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
896 | sigaction (w->signum, &sa, 0); |
1420 | sigaction (w->signum, &sa, 0); |
|
|
1421 | #endif |
897 | } |
1422 | } |
898 | } |
1423 | } |
899 | |
1424 | |
900 | void |
1425 | void |
901 | ev_signal_stop (struct ev_signal *w) |
1426 | ev_signal_stop (EV_P_ struct ev_signal *w) |
902 | { |
1427 | { |
903 | ev_clear_pending ((W)w); |
1428 | ev_clear_pending (EV_A_ (W)w); |
904 | if (!ev_is_active (w)) |
1429 | if (!ev_is_active (w)) |
905 | return; |
1430 | return; |
906 | |
1431 | |
907 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1432 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
908 | ev_stop ((W)w); |
1433 | ev_stop (EV_A_ (W)w); |
909 | |
1434 | |
910 | if (!signals [w->signum - 1].head) |
1435 | if (!signals [w->signum - 1].head) |
911 | signal (w->signum, SIG_DFL); |
1436 | signal (w->signum, SIG_DFL); |
912 | } |
1437 | } |
913 | |
1438 | |
914 | void |
1439 | void |
915 | ev_idle_start (struct ev_idle *w) |
1440 | ev_child_start (EV_P_ struct ev_child *w) |
916 | { |
1441 | { |
|
|
1442 | #if EV_MULTIPLICITY |
|
|
1443 | assert (("child watchers are only supported in the default loop", loop == default_loop)); |
|
|
1444 | #endif |
917 | if (ev_is_active (w)) |
1445 | if (ev_is_active (w)) |
918 | return; |
1446 | return; |
919 | |
1447 | |
920 | ev_start ((W)w, ++idlecnt); |
1448 | ev_start (EV_A_ (W)w, 1); |
921 | array_needsize (idles, idlemax, idlecnt, ); |
1449 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
922 | idles [idlecnt - 1] = w; |
|
|
923 | } |
1450 | } |
924 | |
1451 | |
925 | void |
1452 | void |
926 | ev_idle_stop (struct ev_idle *w) |
1453 | ev_child_stop (EV_P_ struct ev_child *w) |
927 | { |
1454 | { |
928 | ev_clear_pending ((W)w); |
1455 | ev_clear_pending (EV_A_ (W)w); |
929 | if (ev_is_active (w)) |
1456 | if (ev_is_active (w)) |
930 | return; |
1457 | return; |
931 | |
1458 | |
932 | idles [w->active - 1] = idles [--idlecnt]; |
|
|
933 | ev_stop ((W)w); |
|
|
934 | } |
|
|
935 | |
|
|
936 | void |
|
|
937 | ev_prepare_start (struct ev_prepare *w) |
|
|
938 | { |
|
|
939 | if (ev_is_active (w)) |
|
|
940 | return; |
|
|
941 | |
|
|
942 | ev_start ((W)w, ++preparecnt); |
|
|
943 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
944 | prepares [preparecnt - 1] = w; |
|
|
945 | } |
|
|
946 | |
|
|
947 | void |
|
|
948 | ev_prepare_stop (struct ev_prepare *w) |
|
|
949 | { |
|
|
950 | ev_clear_pending ((W)w); |
|
|
951 | if (ev_is_active (w)) |
|
|
952 | return; |
|
|
953 | |
|
|
954 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
955 | ev_stop ((W)w); |
|
|
956 | } |
|
|
957 | |
|
|
958 | void |
|
|
959 | ev_check_start (struct ev_check *w) |
|
|
960 | { |
|
|
961 | if (ev_is_active (w)) |
|
|
962 | return; |
|
|
963 | |
|
|
964 | ev_start ((W)w, ++checkcnt); |
|
|
965 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
966 | checks [checkcnt - 1] = w; |
|
|
967 | } |
|
|
968 | |
|
|
969 | void |
|
|
970 | ev_check_stop (struct ev_check *w) |
|
|
971 | { |
|
|
972 | ev_clear_pending ((W)w); |
|
|
973 | if (ev_is_active (w)) |
|
|
974 | return; |
|
|
975 | |
|
|
976 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
977 | ev_stop ((W)w); |
|
|
978 | } |
|
|
979 | |
|
|
980 | void |
|
|
981 | ev_child_start (struct ev_child *w) |
|
|
982 | { |
|
|
983 | if (ev_is_active (w)) |
|
|
984 | return; |
|
|
985 | |
|
|
986 | ev_start ((W)w, 1); |
|
|
987 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
988 | } |
|
|
989 | |
|
|
990 | void |
|
|
991 | ev_child_stop (struct ev_child *w) |
|
|
992 | { |
|
|
993 | ev_clear_pending ((W)w); |
|
|
994 | if (ev_is_active (w)) |
|
|
995 | return; |
|
|
996 | |
|
|
997 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
1459 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
998 | ev_stop ((W)w); |
1460 | ev_stop (EV_A_ (W)w); |
999 | } |
1461 | } |
1000 | |
1462 | |
1001 | /*****************************************************************************/ |
1463 | /*****************************************************************************/ |
1002 | |
1464 | |
1003 | struct ev_once |
1465 | struct ev_once |
… | |
… | |
1007 | void (*cb)(int revents, void *arg); |
1469 | void (*cb)(int revents, void *arg); |
1008 | void *arg; |
1470 | void *arg; |
1009 | }; |
1471 | }; |
1010 | |
1472 | |
1011 | static void |
1473 | static void |
1012 | once_cb (struct ev_once *once, int revents) |
1474 | once_cb (EV_P_ struct ev_once *once, int revents) |
1013 | { |
1475 | { |
1014 | void (*cb)(int revents, void *arg) = once->cb; |
1476 | void (*cb)(int revents, void *arg) = once->cb; |
1015 | void *arg = once->arg; |
1477 | void *arg = once->arg; |
1016 | |
1478 | |
1017 | ev_io_stop (&once->io); |
1479 | ev_io_stop (EV_A_ &once->io); |
1018 | ev_timer_stop (&once->to); |
1480 | ev_timer_stop (EV_A_ &once->to); |
1019 | free (once); |
1481 | ev_free (once); |
1020 | |
1482 | |
1021 | cb (revents, arg); |
1483 | cb (revents, arg); |
1022 | } |
1484 | } |
1023 | |
1485 | |
1024 | static void |
1486 | static void |
1025 | once_cb_io (struct ev_io *w, int revents) |
1487 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
1026 | { |
1488 | { |
1027 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1489 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1028 | } |
1490 | } |
1029 | |
1491 | |
1030 | static void |
1492 | static void |
1031 | once_cb_to (struct ev_timer *w, int revents) |
1493 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
1032 | { |
1494 | { |
1033 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1495 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1034 | } |
1496 | } |
1035 | |
1497 | |
1036 | void |
1498 | void |
1037 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1499 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1038 | { |
1500 | { |
1039 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
1501 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
1040 | |
1502 | |
1041 | if (!once) |
1503 | if (!once) |
1042 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
1504 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
1043 | else |
1505 | else |
1044 | { |
1506 | { |
… | |
… | |
1047 | |
1509 | |
1048 | ev_watcher_init (&once->io, once_cb_io); |
1510 | ev_watcher_init (&once->io, once_cb_io); |
1049 | if (fd >= 0) |
1511 | if (fd >= 0) |
1050 | { |
1512 | { |
1051 | ev_io_set (&once->io, fd, events); |
1513 | ev_io_set (&once->io, fd, events); |
1052 | ev_io_start (&once->io); |
1514 | ev_io_start (EV_A_ &once->io); |
1053 | } |
1515 | } |
1054 | |
1516 | |
1055 | ev_watcher_init (&once->to, once_cb_to); |
1517 | ev_watcher_init (&once->to, once_cb_to); |
1056 | if (timeout >= 0.) |
1518 | if (timeout >= 0.) |
1057 | { |
1519 | { |
1058 | ev_timer_set (&once->to, timeout, 0.); |
1520 | ev_timer_set (&once->to, timeout, 0.); |
1059 | ev_timer_start (&once->to); |
1521 | ev_timer_start (EV_A_ &once->to); |
1060 | } |
1522 | } |
1061 | } |
1523 | } |
1062 | } |
1524 | } |
1063 | |
1525 | |
1064 | /*****************************************************************************/ |
|
|
1065 | |
|
|
1066 | #if 0 |
|
|
1067 | |
|
|
1068 | struct ev_io wio; |
|
|
1069 | |
|
|
1070 | static void |
|
|
1071 | sin_cb (struct ev_io *w, int revents) |
|
|
1072 | { |
|
|
1073 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
1074 | } |
|
|
1075 | |
|
|
1076 | static void |
|
|
1077 | ocb (struct ev_timer *w, int revents) |
|
|
1078 | { |
|
|
1079 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
1080 | ev_timer_stop (w); |
|
|
1081 | ev_timer_start (w); |
|
|
1082 | } |
|
|
1083 | |
|
|
1084 | static void |
|
|
1085 | scb (struct ev_signal *w, int revents) |
|
|
1086 | { |
|
|
1087 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
1088 | ev_io_stop (&wio); |
|
|
1089 | ev_io_start (&wio); |
|
|
1090 | } |
|
|
1091 | |
|
|
1092 | static void |
|
|
1093 | gcb (struct ev_signal *w, int revents) |
|
|
1094 | { |
|
|
1095 | fprintf (stderr, "generic %x\n", revents); |
|
|
1096 | |
|
|
1097 | } |
|
|
1098 | |
|
|
1099 | int main (void) |
|
|
1100 | { |
|
|
1101 | ev_init (0); |
|
|
1102 | |
|
|
1103 | ev_io_init (&wio, sin_cb, 0, EV_READ); |
|
|
1104 | ev_io_start (&wio); |
|
|
1105 | |
|
|
1106 | struct ev_timer t[10000]; |
|
|
1107 | |
|
|
1108 | #if 0 |
|
|
1109 | int i; |
|
|
1110 | for (i = 0; i < 10000; ++i) |
|
|
1111 | { |
|
|
1112 | struct ev_timer *w = t + i; |
|
|
1113 | ev_watcher_init (w, ocb, i); |
|
|
1114 | ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
1115 | ev_timer_start (w); |
|
|
1116 | if (drand48 () < 0.5) |
|
|
1117 | ev_timer_stop (w); |
|
|
1118 | } |
|
|
1119 | #endif |
|
|
1120 | |
|
|
1121 | struct ev_timer t1; |
|
|
1122 | ev_timer_init (&t1, ocb, 5, 10); |
|
|
1123 | ev_timer_start (&t1); |
|
|
1124 | |
|
|
1125 | struct ev_signal sig; |
|
|
1126 | ev_signal_init (&sig, scb, SIGQUIT); |
|
|
1127 | ev_signal_start (&sig); |
|
|
1128 | |
|
|
1129 | struct ev_check cw; |
|
|
1130 | ev_check_init (&cw, gcb); |
|
|
1131 | ev_check_start (&cw); |
|
|
1132 | |
|
|
1133 | struct ev_idle iw; |
|
|
1134 | ev_idle_init (&iw, gcb); |
|
|
1135 | ev_idle_start (&iw); |
|
|
1136 | |
|
|
1137 | ev_loop (0); |
|
|
1138 | |
|
|
1139 | return 0; |
|
|
1140 | } |
|
|
1141 | |
|
|
1142 | #endif |
|
|
1143 | |
|
|
1144 | |
|
|
1145 | |
|
|
1146 | |
|
|