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 | */ |
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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 |
29 | |
56 | |
30 | #include <math.h> |
57 | #include <math.h> |
31 | #include <stdlib.h> |
58 | #include <stdlib.h> |
32 | #include <unistd.h> |
59 | #include <unistd.h> |
33 | #include <fcntl.h> |
60 | #include <fcntl.h> |
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36 | |
63 | |
37 | #include <stdio.h> |
64 | #include <stdio.h> |
38 | |
65 | |
39 | #include <assert.h> |
66 | #include <assert.h> |
40 | #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 |
41 | #include <sys/time.h> |
72 | #include <sys/time.h> |
42 | #include <time.h> |
73 | #include <time.h> |
43 | |
74 | |
44 | #define HAVE_EPOLL 1 |
75 | /**/ |
45 | |
76 | |
46 | #ifndef HAVE_MONOTONIC |
77 | #ifndef EV_USE_MONOTONIC |
47 | # ifdef CLOCK_MONOTONIC |
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48 | # define HAVE_MONOTONIC 1 |
78 | # define EV_USE_MONOTONIC 1 |
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79 | #endif |
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80 | |
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81 | #ifndef EV_USE_SELECT |
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82 | # define EV_USE_SELECT 1 |
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83 | #endif |
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84 | |
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85 | #ifndef EV_USE_POLL |
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86 | # define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ |
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87 | #endif |
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88 | |
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89 | #ifndef EV_USE_EPOLL |
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90 | # define EV_USE_EPOLL 0 |
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91 | #endif |
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92 | |
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93 | #ifndef EV_USE_KQUEUE |
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94 | # define EV_USE_KQUEUE 0 |
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95 | #endif |
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96 | |
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97 | #ifndef EV_USE_WIN32 |
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98 | # ifdef WIN32 |
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99 | # define EV_USE_WIN32 1 |
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100 | # else |
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101 | # define EV_USE_WIN32 0 |
49 | # endif |
102 | # endif |
50 | #endif |
103 | #endif |
51 | |
104 | |
52 | #ifndef HAVE_SELECT |
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53 | # define HAVE_SELECT 1 |
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54 | #endif |
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55 | |
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56 | #ifndef HAVE_EPOLL |
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57 | # define HAVE_EPOLL 0 |
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58 | #endif |
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59 | |
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60 | #ifndef HAVE_REALTIME |
105 | #ifndef EV_USE_REALTIME |
61 | # define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
106 | # define EV_USE_REALTIME 1 |
62 | #endif |
107 | #endif |
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108 | |
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109 | /**/ |
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110 | |
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111 | #ifndef CLOCK_MONOTONIC |
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112 | # undef EV_USE_MONOTONIC |
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113 | # define EV_USE_MONOTONIC 0 |
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114 | #endif |
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115 | |
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116 | #ifndef CLOCK_REALTIME |
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117 | # undef EV_USE_REALTIME |
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118 | # define EV_USE_REALTIME 0 |
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119 | #endif |
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120 | |
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121 | /**/ |
63 | |
122 | |
64 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
123 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
65 | #define MAX_BLOCKTIME 60. |
124 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ |
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125 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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126 | /*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ |
66 | |
127 | |
67 | #include "ev.h" |
128 | #include "ev.h" |
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129 | |
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130 | #if __GNUC__ >= 3 |
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131 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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132 | # define inline inline |
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133 | #else |
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134 | # define expect(expr,value) (expr) |
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135 | # define inline static |
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136 | #endif |
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137 | |
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138 | #define expect_false(expr) expect ((expr) != 0, 0) |
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139 | #define expect_true(expr) expect ((expr) != 0, 1) |
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140 | |
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141 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
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142 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
68 | |
143 | |
69 | typedef struct ev_watcher *W; |
144 | typedef struct ev_watcher *W; |
70 | typedef struct ev_watcher_list *WL; |
145 | typedef struct ev_watcher_list *WL; |
71 | typedef struct ev_watcher_time *WT; |
146 | typedef struct ev_watcher_time *WT; |
72 | |
147 | |
73 | static ev_tstamp now, diff; /* monotonic clock */ |
148 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
74 | ev_tstamp ev_now; |
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75 | int ev_method; |
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76 | |
149 | |
77 | static int have_monotonic; /* runtime */ |
150 | #if WIN32 |
78 | |
151 | /* note: the comment below could not be substantiated, but what would I care */ |
79 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
152 | /* MSDN says this is required to handle SIGFPE */ |
80 | static void (*method_modify)(int fd, int oev, int nev); |
153 | volatile double SIGFPE_REQ = 0.0f; |
81 | static void (*method_poll)(ev_tstamp timeout); |
154 | #endif |
82 | |
155 | |
83 | /*****************************************************************************/ |
156 | /*****************************************************************************/ |
84 | |
157 | |
85 | ev_tstamp |
158 | static void (*syserr_cb)(const char *msg); |
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159 | |
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160 | void ev_set_syserr_cb (void (*cb)(const char *msg)) |
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161 | { |
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162 | syserr_cb = cb; |
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163 | } |
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164 | |
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165 | static void |
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166 | syserr (const char *msg) |
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167 | { |
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168 | if (!msg) |
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169 | msg = "(libev) system error"; |
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170 | |
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171 | if (syserr_cb) |
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172 | syserr_cb (msg); |
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173 | else |
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174 | { |
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175 | perror (msg); |
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176 | abort (); |
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177 | } |
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178 | } |
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179 | |
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180 | static void *(*alloc)(void *ptr, long size); |
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181 | |
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182 | void ev_set_allocator (void *(*cb)(void *ptr, long size)) |
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183 | { |
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184 | alloc = cb; |
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185 | } |
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186 | |
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187 | static void * |
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188 | ev_realloc (void *ptr, long size) |
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189 | { |
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190 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
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191 | |
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192 | if (!ptr && size) |
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193 | { |
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194 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
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195 | abort (); |
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196 | } |
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197 | |
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198 | return ptr; |
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199 | } |
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200 | |
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201 | #define ev_malloc(size) ev_realloc (0, (size)) |
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202 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
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203 | |
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204 | /*****************************************************************************/ |
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205 | |
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206 | typedef struct |
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207 | { |
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208 | WL head; |
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209 | unsigned char events; |
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210 | unsigned char reify; |
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211 | } ANFD; |
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212 | |
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213 | typedef struct |
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214 | { |
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215 | W w; |
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216 | int events; |
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217 | } ANPENDING; |
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218 | |
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219 | #if EV_MULTIPLICITY |
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220 | |
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221 | struct ev_loop |
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222 | { |
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223 | # define VAR(name,decl) decl; |
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224 | # include "ev_vars.h" |
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225 | }; |
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226 | # undef VAR |
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227 | # include "ev_wrap.h" |
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228 | |
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229 | #else |
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230 | |
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231 | # define VAR(name,decl) static decl; |
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232 | # include "ev_vars.h" |
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233 | # undef VAR |
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234 | |
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235 | #endif |
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236 | |
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237 | /*****************************************************************************/ |
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238 | |
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239 | inline ev_tstamp |
86 | ev_time (void) |
240 | ev_time (void) |
87 | { |
241 | { |
88 | #if HAVE_REALTIME |
242 | #if EV_USE_REALTIME |
89 | struct timespec ts; |
243 | struct timespec ts; |
90 | clock_gettime (CLOCK_REALTIME, &ts); |
244 | clock_gettime (CLOCK_REALTIME, &ts); |
91 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
245 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
92 | #else |
246 | #else |
93 | struct timeval tv; |
247 | struct timeval tv; |
94 | gettimeofday (&tv, 0); |
248 | gettimeofday (&tv, 0); |
95 | return tv.tv_sec + tv.tv_usec * 1e-6; |
249 | return tv.tv_sec + tv.tv_usec * 1e-6; |
96 | #endif |
250 | #endif |
97 | } |
251 | } |
98 | |
252 | |
99 | static ev_tstamp |
253 | inline ev_tstamp |
100 | get_clock (void) |
254 | get_clock (void) |
101 | { |
255 | { |
102 | #if HAVE_MONOTONIC |
256 | #if EV_USE_MONOTONIC |
103 | if (have_monotonic) |
257 | if (expect_true (have_monotonic)) |
104 | { |
258 | { |
105 | struct timespec ts; |
259 | struct timespec ts; |
106 | clock_gettime (CLOCK_MONOTONIC, &ts); |
260 | clock_gettime (CLOCK_MONOTONIC, &ts); |
107 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
261 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
108 | } |
262 | } |
109 | #endif |
263 | #endif |
110 | |
264 | |
111 | return ev_time (); |
265 | return ev_time (); |
112 | } |
266 | } |
113 | |
267 | |
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268 | ev_tstamp |
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269 | ev_now (EV_P) |
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270 | { |
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271 | return rt_now; |
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272 | } |
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273 | |
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274 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
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275 | |
114 | #define array_needsize(base,cur,cnt,init) \ |
276 | #define array_needsize(base,cur,cnt,init) \ |
115 | if ((cnt) > cur) \ |
277 | if (expect_false ((cnt) > cur)) \ |
116 | { \ |
278 | { \ |
117 | int newcnt = cur ? cur << 1 : 16; \ |
279 | int newcnt = cur; \ |
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280 | do \ |
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281 | { \ |
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282 | newcnt = array_roundsize (base, newcnt << 1); \ |
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283 | } \ |
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284 | while ((cnt) > newcnt); \ |
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285 | \ |
118 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
286 | base = ev_realloc (base, sizeof (*base) * (newcnt)); \ |
119 | init (base + cur, newcnt - cur); \ |
287 | init (base + cur, newcnt - cur); \ |
120 | cur = newcnt; \ |
288 | cur = newcnt; \ |
121 | } |
289 | } |
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290 | |
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291 | #define array_slim(stem) \ |
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292 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
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293 | { \ |
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294 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
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295 | base = ev_realloc (base, sizeof (*base) * (stem ## max)); \ |
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296 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
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297 | } |
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298 | |
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299 | #define array_free(stem, idx) \ |
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300 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
122 | |
301 | |
123 | /*****************************************************************************/ |
302 | /*****************************************************************************/ |
124 | |
303 | |
125 | typedef struct |
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126 | { |
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127 | struct ev_io *head; |
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128 | unsigned char wev, rev; /* want, received event set */ |
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129 | } ANFD; |
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130 | |
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131 | static ANFD *anfds; |
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132 | static int anfdmax; |
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133 | |
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134 | static int *fdchanges; |
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135 | static int fdchangemax, fdchangecnt; |
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136 | |
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137 | static void |
304 | static void |
138 | anfds_init (ANFD *base, int count) |
305 | anfds_init (ANFD *base, int count) |
139 | { |
306 | { |
140 | while (count--) |
307 | while (count--) |
141 | { |
308 | { |
142 | base->head = 0; |
309 | base->head = 0; |
143 | base->wev = base->rev = EV_NONE; |
310 | base->events = EV_NONE; |
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311 | base->reify = 0; |
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312 | |
144 | ++base; |
313 | ++base; |
145 | } |
314 | } |
146 | } |
315 | } |
147 | |
316 | |
148 | typedef struct |
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149 | { |
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150 | W w; |
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151 | int events; |
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152 | } ANPENDING; |
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153 | |
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154 | static ANPENDING *pendings; |
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155 | static int pendingmax, pendingcnt; |
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156 | |
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157 | static void |
317 | static void |
158 | event (W w, int events) |
318 | event (EV_P_ W w, int events) |
159 | { |
319 | { |
160 | if (w->active) |
320 | if (w->pending) |
161 | { |
321 | { |
162 | w->pending = ++pendingcnt; |
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163 | array_needsize (pendings, pendingmax, pendingcnt, ); |
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164 | pendings [pendingcnt - 1].w = w; |
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165 | pendings [pendingcnt - 1].events = events; |
322 | pendings [ABSPRI (w)][w->pending - 1].events |= events; |
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323 | return; |
166 | } |
324 | } |
167 | } |
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168 | |
325 | |
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326 | w->pending = ++pendingcnt [ABSPRI (w)]; |
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327 | array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); |
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328 | pendings [ABSPRI (w)][w->pending - 1].w = w; |
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329 | pendings [ABSPRI (w)][w->pending - 1].events = events; |
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330 | } |
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331 | |
169 | static void |
332 | static void |
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333 | queue_events (EV_P_ W *events, int eventcnt, int type) |
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334 | { |
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335 | int i; |
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336 | |
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337 | for (i = 0; i < eventcnt; ++i) |
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338 | event (EV_A_ events [i], type); |
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339 | } |
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340 | |
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341 | static void |
170 | fd_event (int fd, int events) |
342 | fd_event (EV_P_ int fd, int events) |
171 | { |
343 | { |
172 | ANFD *anfd = anfds + fd; |
344 | ANFD *anfd = anfds + fd; |
173 | struct ev_io *w; |
345 | struct ev_io *w; |
174 | |
346 | |
175 | for (w = anfd->head; w; w = w->next) |
347 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
176 | { |
348 | { |
177 | int ev = w->events & events; |
349 | int ev = w->events & events; |
178 | |
350 | |
179 | if (ev) |
351 | if (ev) |
180 | event ((W)w, ev); |
352 | event (EV_A_ (W)w, ev); |
181 | } |
353 | } |
182 | } |
354 | } |
183 | |
355 | |
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356 | /*****************************************************************************/ |
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357 | |
184 | static void |
358 | static void |
185 | queue_events (W *events, int eventcnt, int type) |
359 | fd_reify (EV_P) |
186 | { |
360 | { |
187 | int i; |
361 | int i; |
188 | |
362 | |
189 | for (i = 0; i < eventcnt; ++i) |
363 | for (i = 0; i < fdchangecnt; ++i) |
190 | event (events [i], type); |
364 | { |
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365 | int fd = fdchanges [i]; |
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366 | ANFD *anfd = anfds + fd; |
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367 | struct ev_io *w; |
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368 | |
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369 | int events = 0; |
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370 | |
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371 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
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372 | events |= w->events; |
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373 | |
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374 | anfd->reify = 0; |
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375 | |
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376 | method_modify (EV_A_ fd, anfd->events, events); |
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377 | anfd->events = events; |
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378 | } |
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379 | |
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380 | fdchangecnt = 0; |
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381 | } |
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382 | |
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383 | static void |
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384 | fd_change (EV_P_ int fd) |
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385 | { |
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386 | if (anfds [fd].reify) |
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387 | return; |
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388 | |
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389 | anfds [fd].reify = 1; |
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390 | |
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391 | ++fdchangecnt; |
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392 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
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393 | fdchanges [fdchangecnt - 1] = fd; |
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394 | } |
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395 | |
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396 | static void |
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397 | fd_kill (EV_P_ int fd) |
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398 | { |
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399 | struct ev_io *w; |
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400 | |
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401 | while ((w = (struct ev_io *)anfds [fd].head)) |
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402 | { |
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403 | ev_io_stop (EV_A_ w); |
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404 | event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
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405 | } |
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406 | } |
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407 | |
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408 | /* called on EBADF to verify fds */ |
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409 | static void |
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410 | fd_ebadf (EV_P) |
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411 | { |
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412 | int fd; |
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413 | |
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414 | for (fd = 0; fd < anfdmax; ++fd) |
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415 | if (anfds [fd].events) |
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416 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
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417 | fd_kill (EV_A_ fd); |
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418 | } |
|
|
419 | |
|
|
420 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
421 | static void |
|
|
422 | fd_enomem (EV_P) |
|
|
423 | { |
|
|
424 | int fd; |
|
|
425 | |
|
|
426 | for (fd = anfdmax; fd--; ) |
|
|
427 | if (anfds [fd].events) |
|
|
428 | { |
|
|
429 | fd_kill (EV_A_ fd); |
|
|
430 | return; |
|
|
431 | } |
|
|
432 | } |
|
|
433 | |
|
|
434 | /* usually called after fork if method needs to re-arm all fds from scratch */ |
|
|
435 | static void |
|
|
436 | fd_rearm_all (EV_P) |
|
|
437 | { |
|
|
438 | int fd; |
|
|
439 | |
|
|
440 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
441 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
442 | if (anfds [fd].events) |
|
|
443 | { |
|
|
444 | anfds [fd].events = 0; |
|
|
445 | fd_change (EV_A_ fd); |
|
|
446 | } |
191 | } |
447 | } |
192 | |
448 | |
193 | /*****************************************************************************/ |
449 | /*****************************************************************************/ |
194 | |
450 | |
195 | static struct ev_timer **timers; |
|
|
196 | static int timermax, timercnt; |
|
|
197 | |
|
|
198 | static struct ev_periodic **periodics; |
|
|
199 | static int periodicmax, periodiccnt; |
|
|
200 | |
|
|
201 | static void |
451 | static void |
202 | upheap (WT *timers, int k) |
452 | upheap (WT *heap, int k) |
203 | { |
453 | { |
204 | WT w = timers [k]; |
454 | WT w = heap [k]; |
205 | |
455 | |
206 | while (k && timers [k >> 1]->at > w->at) |
456 | while (k && heap [k >> 1]->at > w->at) |
207 | { |
457 | { |
208 | timers [k] = timers [k >> 1]; |
458 | heap [k] = heap [k >> 1]; |
209 | timers [k]->active = k + 1; |
459 | ((W)heap [k])->active = k + 1; |
210 | k >>= 1; |
460 | k >>= 1; |
211 | } |
461 | } |
212 | |
462 | |
213 | timers [k] = w; |
463 | heap [k] = w; |
214 | timers [k]->active = k + 1; |
464 | ((W)heap [k])->active = k + 1; |
215 | |
465 | |
216 | } |
466 | } |
217 | |
467 | |
218 | static void |
468 | static void |
219 | downheap (WT *timers, int N, int k) |
469 | downheap (WT *heap, int N, int k) |
220 | { |
470 | { |
221 | WT w = timers [k]; |
471 | WT w = heap [k]; |
222 | |
472 | |
223 | while (k < (N >> 1)) |
473 | while (k < (N >> 1)) |
224 | { |
474 | { |
225 | int j = k << 1; |
475 | int j = k << 1; |
226 | |
476 | |
227 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
477 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
228 | ++j; |
478 | ++j; |
229 | |
479 | |
230 | if (w->at <= timers [j]->at) |
480 | if (w->at <= heap [j]->at) |
231 | break; |
481 | break; |
232 | |
482 | |
233 | timers [k] = timers [j]; |
483 | heap [k] = heap [j]; |
234 | timers [k]->active = k + 1; |
484 | ((W)heap [k])->active = k + 1; |
235 | k = j; |
485 | k = j; |
236 | } |
486 | } |
237 | |
487 | |
238 | timers [k] = w; |
488 | heap [k] = w; |
239 | timers [k]->active = k + 1; |
489 | ((W)heap [k])->active = k + 1; |
240 | } |
490 | } |
241 | |
491 | |
242 | /*****************************************************************************/ |
492 | /*****************************************************************************/ |
243 | |
493 | |
244 | typedef struct |
494 | typedef struct |
245 | { |
495 | { |
246 | struct ev_signal *head; |
496 | WL head; |
247 | sig_atomic_t gotsig; |
497 | sig_atomic_t volatile gotsig; |
248 | } ANSIG; |
498 | } ANSIG; |
249 | |
499 | |
250 | static ANSIG *signals; |
500 | static ANSIG *signals; |
251 | static int signalmax; |
501 | static int signalmax; |
252 | |
502 | |
253 | static int sigpipe [2]; |
503 | static int sigpipe [2]; |
254 | static sig_atomic_t gotsig; |
504 | static sig_atomic_t volatile gotsig; |
255 | static struct ev_io sigev; |
505 | static struct ev_io sigev; |
256 | |
506 | |
257 | static void |
507 | static void |
258 | signals_init (ANSIG *base, int count) |
508 | signals_init (ANSIG *base, int count) |
259 | { |
509 | { |
260 | while (count--) |
510 | while (count--) |
261 | { |
511 | { |
262 | base->head = 0; |
512 | base->head = 0; |
263 | base->gotsig = 0; |
513 | base->gotsig = 0; |
|
|
514 | |
264 | ++base; |
515 | ++base; |
265 | } |
516 | } |
266 | } |
517 | } |
267 | |
518 | |
268 | static void |
519 | static void |
269 | sighandler (int signum) |
520 | sighandler (int signum) |
270 | { |
521 | { |
|
|
522 | #if WIN32 |
|
|
523 | signal (signum, sighandler); |
|
|
524 | #endif |
|
|
525 | |
271 | signals [signum - 1].gotsig = 1; |
526 | signals [signum - 1].gotsig = 1; |
272 | |
527 | |
273 | if (!gotsig) |
528 | if (!gotsig) |
274 | { |
529 | { |
|
|
530 | int old_errno = errno; |
275 | gotsig = 1; |
531 | gotsig = 1; |
276 | write (sigpipe [1], &gotsig, 1); |
532 | write (sigpipe [1], &signum, 1); |
|
|
533 | errno = old_errno; |
277 | } |
534 | } |
278 | } |
535 | } |
279 | |
536 | |
280 | static void |
537 | static void |
281 | sigcb (struct ev_io *iow, int revents) |
538 | sigcb (EV_P_ struct ev_io *iow, int revents) |
282 | { |
539 | { |
283 | struct ev_signal *w; |
540 | WL w; |
284 | int sig; |
541 | int signum; |
285 | |
542 | |
|
|
543 | read (sigpipe [0], &revents, 1); |
286 | gotsig = 0; |
544 | gotsig = 0; |
287 | read (sigpipe [0], &revents, 1); |
|
|
288 | |
545 | |
289 | for (sig = signalmax; sig--; ) |
546 | for (signum = signalmax; signum--; ) |
290 | if (signals [sig].gotsig) |
547 | if (signals [signum].gotsig) |
291 | { |
548 | { |
292 | signals [sig].gotsig = 0; |
549 | signals [signum].gotsig = 0; |
293 | |
550 | |
294 | for (w = signals [sig].head; w; w = w->next) |
551 | for (w = signals [signum].head; w; w = w->next) |
295 | event ((W)w, EV_SIGNAL); |
552 | event (EV_A_ (W)w, EV_SIGNAL); |
296 | } |
553 | } |
297 | } |
554 | } |
298 | |
555 | |
299 | static void |
556 | static void |
300 | siginit (void) |
557 | siginit (EV_P) |
301 | { |
558 | { |
|
|
559 | #ifndef WIN32 |
302 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
560 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
303 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
561 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
304 | |
562 | |
305 | /* rather than sort out wether we really need nb, set it */ |
563 | /* rather than sort out wether we really need nb, set it */ |
306 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
564 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
307 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
565 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
566 | #endif |
308 | |
567 | |
309 | evio_set (&sigev, sigpipe [0], EV_READ); |
568 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
310 | evio_start (&sigev); |
569 | ev_io_start (EV_A_ &sigev); |
|
|
570 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
311 | } |
571 | } |
312 | |
572 | |
313 | /*****************************************************************************/ |
573 | /*****************************************************************************/ |
314 | |
574 | |
315 | static struct ev_idle **idles; |
575 | #ifndef WIN32 |
316 | static int idlemax, idlecnt; |
|
|
317 | |
576 | |
318 | static struct ev_check **checks; |
577 | static struct ev_child *childs [PID_HASHSIZE]; |
319 | static int checkmax, checkcnt; |
578 | static struct ev_signal childev; |
|
|
579 | |
|
|
580 | #ifndef WCONTINUED |
|
|
581 | # define WCONTINUED 0 |
|
|
582 | #endif |
|
|
583 | |
|
|
584 | static void |
|
|
585 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
|
|
586 | { |
|
|
587 | struct ev_child *w; |
|
|
588 | |
|
|
589 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
590 | if (w->pid == pid || !w->pid) |
|
|
591 | { |
|
|
592 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
|
|
593 | w->rpid = pid; |
|
|
594 | w->rstatus = status; |
|
|
595 | event (EV_A_ (W)w, EV_CHILD); |
|
|
596 | } |
|
|
597 | } |
|
|
598 | |
|
|
599 | static void |
|
|
600 | childcb (EV_P_ struct ev_signal *sw, int revents) |
|
|
601 | { |
|
|
602 | int pid, status; |
|
|
603 | |
|
|
604 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
|
|
605 | { |
|
|
606 | /* make sure we are called again until all childs have been reaped */ |
|
|
607 | event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
608 | |
|
|
609 | child_reap (EV_A_ sw, pid, pid, status); |
|
|
610 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
|
|
611 | } |
|
|
612 | } |
|
|
613 | |
|
|
614 | #endif |
320 | |
615 | |
321 | /*****************************************************************************/ |
616 | /*****************************************************************************/ |
322 | |
617 | |
|
|
618 | #if EV_USE_KQUEUE |
|
|
619 | # include "ev_kqueue.c" |
|
|
620 | #endif |
323 | #if HAVE_EPOLL |
621 | #if EV_USE_EPOLL |
324 | # include "ev_epoll.c" |
622 | # include "ev_epoll.c" |
325 | #endif |
623 | #endif |
|
|
624 | #if EV_USE_POLL |
|
|
625 | # include "ev_poll.c" |
|
|
626 | #endif |
326 | #if HAVE_SELECT |
627 | #if EV_USE_SELECT |
327 | # include "ev_select.c" |
628 | # include "ev_select.c" |
328 | #endif |
629 | #endif |
329 | |
630 | |
330 | int ev_init (int flags) |
631 | int |
|
|
632 | ev_version_major (void) |
331 | { |
633 | { |
|
|
634 | return EV_VERSION_MAJOR; |
|
|
635 | } |
|
|
636 | |
|
|
637 | int |
|
|
638 | ev_version_minor (void) |
|
|
639 | { |
|
|
640 | return EV_VERSION_MINOR; |
|
|
641 | } |
|
|
642 | |
|
|
643 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
644 | static int |
|
|
645 | enable_secure (void) |
|
|
646 | { |
|
|
647 | #ifdef WIN32 |
|
|
648 | return 0; |
|
|
649 | #else |
|
|
650 | return getuid () != geteuid () |
|
|
651 | || getgid () != getegid (); |
|
|
652 | #endif |
|
|
653 | } |
|
|
654 | |
|
|
655 | int |
|
|
656 | ev_method (EV_P) |
|
|
657 | { |
|
|
658 | return method; |
|
|
659 | } |
|
|
660 | |
|
|
661 | static void |
|
|
662 | loop_init (EV_P_ int methods) |
|
|
663 | { |
|
|
664 | if (!method) |
|
|
665 | { |
332 | #if HAVE_MONOTONIC |
666 | #if EV_USE_MONOTONIC |
333 | { |
667 | { |
334 | struct timespec ts; |
668 | struct timespec ts; |
335 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
669 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
336 | have_monotonic = 1; |
670 | have_monotonic = 1; |
337 | } |
671 | } |
338 | #endif |
672 | #endif |
339 | |
673 | |
340 | ev_now = ev_time (); |
674 | rt_now = ev_time (); |
341 | now = get_clock (); |
675 | mn_now = get_clock (); |
342 | diff = ev_now - now; |
676 | now_floor = mn_now; |
|
|
677 | rtmn_diff = rt_now - mn_now; |
343 | |
678 | |
|
|
679 | if (methods == EVMETHOD_AUTO) |
|
|
680 | if (!enable_secure () && getenv ("LIBEV_METHODS")) |
|
|
681 | methods = atoi (getenv ("LIBEV_METHODS")); |
|
|
682 | else |
|
|
683 | methods = EVMETHOD_ANY; |
|
|
684 | |
|
|
685 | method = 0; |
|
|
686 | #if EV_USE_WIN32 |
|
|
687 | if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); |
|
|
688 | #endif |
|
|
689 | #if EV_USE_KQUEUE |
|
|
690 | if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); |
|
|
691 | #endif |
|
|
692 | #if EV_USE_EPOLL |
|
|
693 | if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); |
|
|
694 | #endif |
|
|
695 | #if EV_USE_POLL |
|
|
696 | if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); |
|
|
697 | #endif |
|
|
698 | #if EV_USE_SELECT |
|
|
699 | if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); |
|
|
700 | #endif |
|
|
701 | |
|
|
702 | ev_watcher_init (&sigev, sigcb); |
|
|
703 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
704 | } |
|
|
705 | } |
|
|
706 | |
|
|
707 | void |
|
|
708 | loop_destroy (EV_P) |
|
|
709 | { |
|
|
710 | int i; |
|
|
711 | |
|
|
712 | #if EV_USE_WIN32 |
|
|
713 | if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); |
|
|
714 | #endif |
|
|
715 | #if EV_USE_KQUEUE |
|
|
716 | if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); |
|
|
717 | #endif |
|
|
718 | #if EV_USE_EPOLL |
|
|
719 | if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); |
|
|
720 | #endif |
|
|
721 | #if EV_USE_POLL |
|
|
722 | if (method == EVMETHOD_POLL ) poll_destroy (EV_A); |
|
|
723 | #endif |
|
|
724 | #if EV_USE_SELECT |
|
|
725 | if (method == EVMETHOD_SELECT) select_destroy (EV_A); |
|
|
726 | #endif |
|
|
727 | |
|
|
728 | for (i = NUMPRI; i--; ) |
|
|
729 | array_free (pending, [i]); |
|
|
730 | |
|
|
731 | array_free (fdchange, ); |
|
|
732 | array_free (timer, ); |
|
|
733 | array_free (periodic, ); |
|
|
734 | array_free (idle, ); |
|
|
735 | array_free (prepare, ); |
|
|
736 | array_free (check, ); |
|
|
737 | |
|
|
738 | method = 0; |
|
|
739 | } |
|
|
740 | |
|
|
741 | static void |
|
|
742 | loop_fork (EV_P) |
|
|
743 | { |
|
|
744 | #if EV_USE_EPOLL |
|
|
745 | if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); |
|
|
746 | #endif |
|
|
747 | #if EV_USE_KQUEUE |
|
|
748 | if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); |
|
|
749 | #endif |
|
|
750 | |
|
|
751 | if (ev_is_active (&sigev)) |
|
|
752 | { |
|
|
753 | /* default loop */ |
|
|
754 | |
|
|
755 | ev_ref (EV_A); |
|
|
756 | ev_io_stop (EV_A_ &sigev); |
|
|
757 | close (sigpipe [0]); |
|
|
758 | close (sigpipe [1]); |
|
|
759 | |
|
|
760 | while (pipe (sigpipe)) |
|
|
761 | syserr ("(libev) error creating pipe"); |
|
|
762 | |
|
|
763 | siginit (EV_A); |
|
|
764 | } |
|
|
765 | |
|
|
766 | postfork = 0; |
|
|
767 | } |
|
|
768 | |
|
|
769 | #if EV_MULTIPLICITY |
|
|
770 | struct ev_loop * |
|
|
771 | ev_loop_new (int methods) |
|
|
772 | { |
|
|
773 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
774 | |
|
|
775 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
776 | |
|
|
777 | loop_init (EV_A_ methods); |
|
|
778 | |
|
|
779 | if (ev_method (EV_A)) |
|
|
780 | return loop; |
|
|
781 | |
|
|
782 | return 0; |
|
|
783 | } |
|
|
784 | |
|
|
785 | void |
|
|
786 | ev_loop_destroy (EV_P) |
|
|
787 | { |
|
|
788 | loop_destroy (EV_A); |
|
|
789 | ev_free (loop); |
|
|
790 | } |
|
|
791 | |
|
|
792 | void |
|
|
793 | ev_loop_fork (EV_P) |
|
|
794 | { |
|
|
795 | postfork = 1; |
|
|
796 | } |
|
|
797 | |
|
|
798 | #endif |
|
|
799 | |
|
|
800 | #if EV_MULTIPLICITY |
|
|
801 | struct ev_loop default_loop_struct; |
|
|
802 | static struct ev_loop *default_loop; |
|
|
803 | |
|
|
804 | struct ev_loop * |
|
|
805 | #else |
|
|
806 | static int default_loop; |
|
|
807 | |
|
|
808 | int |
|
|
809 | #endif |
|
|
810 | ev_default_loop (int methods) |
|
|
811 | { |
|
|
812 | if (sigpipe [0] == sigpipe [1]) |
344 | if (pipe (sigpipe)) |
813 | if (pipe (sigpipe)) |
345 | return 0; |
814 | return 0; |
346 | |
815 | |
347 | ev_method = EVMETHOD_NONE; |
816 | if (!default_loop) |
348 | #if HAVE_EPOLL |
817 | { |
349 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
818 | #if EV_MULTIPLICITY |
|
|
819 | struct ev_loop *loop = default_loop = &default_loop_struct; |
|
|
820 | #else |
|
|
821 | default_loop = 1; |
350 | #endif |
822 | #endif |
351 | #if HAVE_SELECT |
|
|
352 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
353 | #endif |
|
|
354 | |
823 | |
|
|
824 | loop_init (EV_A_ methods); |
|
|
825 | |
|
|
826 | if (ev_method (EV_A)) |
|
|
827 | { |
|
|
828 | siginit (EV_A); |
|
|
829 | |
|
|
830 | #ifndef WIN32 |
|
|
831 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
832 | ev_set_priority (&childev, EV_MAXPRI); |
|
|
833 | ev_signal_start (EV_A_ &childev); |
|
|
834 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
835 | #endif |
|
|
836 | } |
|
|
837 | else |
|
|
838 | default_loop = 0; |
|
|
839 | } |
|
|
840 | |
|
|
841 | return default_loop; |
|
|
842 | } |
|
|
843 | |
|
|
844 | void |
|
|
845 | ev_default_destroy (void) |
|
|
846 | { |
|
|
847 | #if EV_MULTIPLICITY |
|
|
848 | struct ev_loop *loop = default_loop; |
|
|
849 | #endif |
|
|
850 | |
|
|
851 | ev_ref (EV_A); /* child watcher */ |
|
|
852 | ev_signal_stop (EV_A_ &childev); |
|
|
853 | |
|
|
854 | ev_ref (EV_A); /* signal watcher */ |
|
|
855 | ev_io_stop (EV_A_ &sigev); |
|
|
856 | |
|
|
857 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
858 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
859 | |
|
|
860 | loop_destroy (EV_A); |
|
|
861 | } |
|
|
862 | |
|
|
863 | void |
|
|
864 | ev_default_fork (void) |
|
|
865 | { |
|
|
866 | #if EV_MULTIPLICITY |
|
|
867 | struct ev_loop *loop = default_loop; |
|
|
868 | #endif |
|
|
869 | |
355 | if (ev_method) |
870 | if (method) |
356 | { |
871 | postfork = 1; |
357 | evw_init (&sigev, sigcb); |
|
|
358 | siginit (); |
|
|
359 | } |
|
|
360 | |
|
|
361 | return ev_method; |
|
|
362 | } |
872 | } |
363 | |
873 | |
364 | /*****************************************************************************/ |
874 | /*****************************************************************************/ |
365 | |
875 | |
366 | void ev_prefork (void) |
|
|
367 | { |
|
|
368 | /* nop */ |
|
|
369 | } |
|
|
370 | |
|
|
371 | void ev_postfork_parent (void) |
|
|
372 | { |
|
|
373 | /* nop */ |
|
|
374 | } |
|
|
375 | |
|
|
376 | void ev_postfork_child (void) |
|
|
377 | { |
|
|
378 | #if HAVE_EPOLL |
|
|
379 | if (ev_method == EVMETHOD_EPOLL) |
|
|
380 | epoll_postfork_child (); |
|
|
381 | #endif |
|
|
382 | |
|
|
383 | evio_stop (&sigev); |
|
|
384 | close (sigpipe [0]); |
|
|
385 | close (sigpipe [1]); |
|
|
386 | pipe (sigpipe); |
|
|
387 | siginit (); |
|
|
388 | } |
|
|
389 | |
|
|
390 | /*****************************************************************************/ |
|
|
391 | |
|
|
392 | static void |
876 | static void |
393 | fd_reify (void) |
877 | call_pending (EV_P) |
394 | { |
878 | { |
395 | int i; |
879 | int pri; |
396 | |
880 | |
397 | for (i = 0; i < fdchangecnt; ++i) |
881 | for (pri = NUMPRI; pri--; ) |
398 | { |
882 | while (pendingcnt [pri]) |
399 | int fd = fdchanges [i]; |
|
|
400 | ANFD *anfd = anfds + fd; |
|
|
401 | struct ev_io *w; |
|
|
402 | |
|
|
403 | int wev = 0; |
|
|
404 | |
|
|
405 | for (w = anfd->head; w; w = w->next) |
|
|
406 | wev |= w->events; |
|
|
407 | |
|
|
408 | if (anfd->wev != wev) |
|
|
409 | { |
883 | { |
410 | method_modify (fd, anfd->wev, wev); |
|
|
411 | anfd->wev = wev; |
|
|
412 | } |
|
|
413 | } |
|
|
414 | |
|
|
415 | fdchangecnt = 0; |
|
|
416 | } |
|
|
417 | |
|
|
418 | static void |
|
|
419 | call_pending () |
|
|
420 | { |
|
|
421 | while (pendingcnt) |
|
|
422 | { |
|
|
423 | ANPENDING *p = pendings + --pendingcnt; |
884 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
424 | |
885 | |
425 | if (p->w) |
886 | if (p->w) |
426 | { |
887 | { |
427 | p->w->pending = 0; |
888 | p->w->pending = 0; |
428 | p->w->cb (p->w, p->events); |
889 | p->w->cb (EV_A_ p->w, p->events); |
429 | } |
890 | } |
430 | } |
891 | } |
431 | } |
892 | } |
432 | |
893 | |
433 | static void |
894 | static void |
434 | timers_reify () |
895 | timers_reify (EV_P) |
435 | { |
896 | { |
436 | while (timercnt && timers [0]->at <= now) |
897 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
437 | { |
898 | { |
438 | struct ev_timer *w = timers [0]; |
899 | struct ev_timer *w = timers [0]; |
439 | |
900 | |
440 | event ((W)w, EV_TIMEOUT); |
901 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
441 | |
902 | |
442 | /* first reschedule or stop timer */ |
903 | /* first reschedule or stop timer */ |
443 | if (w->repeat) |
904 | if (w->repeat) |
444 | { |
905 | { |
|
|
906 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
445 | w->at = now + w->repeat; |
907 | ((WT)w)->at = mn_now + w->repeat; |
446 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
|
|
447 | downheap ((WT *)timers, timercnt, 0); |
908 | downheap ((WT *)timers, timercnt, 0); |
448 | } |
909 | } |
449 | else |
910 | else |
450 | evtimer_stop (w); /* nonrepeating: stop timer */ |
911 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
451 | } |
|
|
452 | } |
|
|
453 | |
912 | |
|
|
913 | event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
914 | } |
|
|
915 | } |
|
|
916 | |
454 | static void |
917 | static void |
455 | periodics_reify () |
918 | periodics_reify (EV_P) |
456 | { |
919 | { |
457 | while (periodiccnt && periodics [0]->at <= ev_now) |
920 | while (periodiccnt && ((WT)periodics [0])->at <= rt_now) |
458 | { |
921 | { |
459 | struct ev_periodic *w = periodics [0]; |
922 | struct ev_periodic *w = periodics [0]; |
|
|
923 | |
|
|
924 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
460 | |
925 | |
461 | /* first reschedule or stop timer */ |
926 | /* first reschedule or stop timer */ |
462 | if (w->interval) |
927 | if (w->interval) |
463 | { |
928 | { |
464 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
929 | ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
465 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
930 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); |
466 | downheap ((WT *)periodics, periodiccnt, 0); |
931 | downheap ((WT *)periodics, periodiccnt, 0); |
467 | } |
932 | } |
468 | else |
933 | else |
469 | evperiodic_stop (w); /* nonrepeating: stop timer */ |
934 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
470 | |
935 | |
471 | event ((W)w, EV_TIMEOUT); |
936 | event (EV_A_ (W)w, EV_PERIODIC); |
472 | } |
937 | } |
473 | } |
938 | } |
474 | |
939 | |
475 | static void |
940 | static void |
476 | periodics_reschedule (ev_tstamp diff) |
941 | periodics_reschedule (EV_P) |
477 | { |
942 | { |
478 | int i; |
943 | int i; |
479 | |
944 | |
480 | /* adjust periodics after time jump */ |
945 | /* adjust periodics after time jump */ |
481 | for (i = 0; i < periodiccnt; ++i) |
946 | for (i = 0; i < periodiccnt; ++i) |
482 | { |
947 | { |
483 | struct ev_periodic *w = periodics [i]; |
948 | struct ev_periodic *w = periodics [i]; |
484 | |
949 | |
485 | if (w->interval) |
950 | if (w->interval) |
486 | { |
951 | { |
487 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
952 | ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; |
488 | |
953 | |
489 | if (fabs (diff) >= 1e-4) |
954 | if (fabs (diff) >= 1e-4) |
490 | { |
955 | { |
491 | evperiodic_stop (w); |
956 | ev_periodic_stop (EV_A_ w); |
492 | evperiodic_start (w); |
957 | ev_periodic_start (EV_A_ w); |
493 | |
958 | |
494 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
959 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
495 | } |
960 | } |
496 | } |
961 | } |
497 | } |
962 | } |
498 | } |
963 | } |
499 | |
964 | |
|
|
965 | inline int |
|
|
966 | time_update_monotonic (EV_P) |
|
|
967 | { |
|
|
968 | mn_now = get_clock (); |
|
|
969 | |
|
|
970 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
971 | { |
|
|
972 | rt_now = rtmn_diff + mn_now; |
|
|
973 | return 0; |
|
|
974 | } |
|
|
975 | else |
|
|
976 | { |
|
|
977 | now_floor = mn_now; |
|
|
978 | rt_now = ev_time (); |
|
|
979 | return 1; |
|
|
980 | } |
|
|
981 | } |
|
|
982 | |
500 | static void |
983 | static void |
501 | time_update () |
984 | time_update (EV_P) |
502 | { |
985 | { |
503 | int i; |
986 | int i; |
504 | |
987 | |
505 | ev_now = ev_time (); |
988 | #if EV_USE_MONOTONIC |
506 | |
|
|
507 | if (have_monotonic) |
989 | if (expect_true (have_monotonic)) |
508 | { |
990 | { |
509 | ev_tstamp odiff = diff; |
991 | if (time_update_monotonic (EV_A)) |
510 | |
|
|
511 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
512 | { |
992 | { |
513 | now = get_clock (); |
993 | ev_tstamp odiff = rtmn_diff; |
|
|
994 | |
|
|
995 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
996 | { |
514 | diff = ev_now - now; |
997 | rtmn_diff = rt_now - mn_now; |
515 | |
998 | |
516 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
999 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
517 | return; /* all is well */ |
1000 | return; /* all is well */ |
518 | |
1001 | |
519 | ev_now = ev_time (); |
1002 | rt_now = ev_time (); |
|
|
1003 | mn_now = get_clock (); |
|
|
1004 | now_floor = mn_now; |
|
|
1005 | } |
|
|
1006 | |
|
|
1007 | periodics_reschedule (EV_A); |
|
|
1008 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1009 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
520 | } |
1010 | } |
521 | |
|
|
522 | periodics_reschedule (diff - odiff); |
|
|
523 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
524 | } |
1011 | } |
525 | else |
1012 | else |
|
|
1013 | #endif |
526 | { |
1014 | { |
527 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
1015 | rt_now = ev_time (); |
|
|
1016 | |
|
|
1017 | if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
528 | { |
1018 | { |
529 | periodics_reschedule (ev_now - now); |
1019 | periodics_reschedule (EV_A); |
530 | |
1020 | |
531 | /* adjust timers. this is easy, as the offset is the same for all */ |
1021 | /* adjust timers. this is easy, as the offset is the same for all */ |
532 | for (i = 0; i < timercnt; ++i) |
1022 | for (i = 0; i < timercnt; ++i) |
533 | timers [i]->at += diff; |
1023 | ((WT)timers [i])->at += rt_now - mn_now; |
534 | } |
1024 | } |
535 | |
1025 | |
536 | now = ev_now; |
1026 | mn_now = rt_now; |
537 | } |
1027 | } |
538 | } |
1028 | } |
539 | |
1029 | |
540 | int ev_loop_done; |
1030 | void |
|
|
1031 | ev_ref (EV_P) |
|
|
1032 | { |
|
|
1033 | ++activecnt; |
|
|
1034 | } |
541 | |
1035 | |
|
|
1036 | void |
|
|
1037 | ev_unref (EV_P) |
|
|
1038 | { |
|
|
1039 | --activecnt; |
|
|
1040 | } |
|
|
1041 | |
|
|
1042 | static int loop_done; |
|
|
1043 | |
|
|
1044 | void |
542 | void ev_loop (int flags) |
1045 | ev_loop (EV_P_ int flags) |
543 | { |
1046 | { |
544 | double block; |
1047 | double block; |
545 | ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0; |
1048 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
546 | |
|
|
547 | if (checkcnt) |
|
|
548 | { |
|
|
549 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
|
|
550 | call_pending (); |
|
|
551 | } |
|
|
552 | |
1049 | |
553 | do |
1050 | do |
554 | { |
1051 | { |
|
|
1052 | /* queue check watchers (and execute them) */ |
|
|
1053 | if (expect_false (preparecnt)) |
|
|
1054 | { |
|
|
1055 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
|
|
1056 | call_pending (EV_A); |
|
|
1057 | } |
|
|
1058 | |
|
|
1059 | /* we might have forked, so reify kernel state if necessary */ |
|
|
1060 | if (expect_false (postfork)) |
|
|
1061 | loop_fork (EV_A); |
|
|
1062 | |
555 | /* update fd-related kernel structures */ |
1063 | /* update fd-related kernel structures */ |
556 | fd_reify (); |
1064 | fd_reify (EV_A); |
557 | |
1065 | |
558 | /* calculate blocking time */ |
1066 | /* calculate blocking time */ |
559 | |
1067 | |
560 | /* we only need this for !monotonic clock, but as we always have timers, we just calculate it every time */ |
1068 | /* we only need this for !monotonic clockor timers, but as we basically |
|
|
1069 | always have timers, we just calculate it always */ |
|
|
1070 | #if EV_USE_MONOTONIC |
|
|
1071 | if (expect_true (have_monotonic)) |
|
|
1072 | time_update_monotonic (EV_A); |
|
|
1073 | else |
|
|
1074 | #endif |
|
|
1075 | { |
561 | ev_now = ev_time (); |
1076 | rt_now = ev_time (); |
|
|
1077 | mn_now = rt_now; |
|
|
1078 | } |
562 | |
1079 | |
563 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
1080 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
564 | block = 0.; |
1081 | block = 0.; |
565 | else |
1082 | else |
566 | { |
1083 | { |
567 | block = MAX_BLOCKTIME; |
1084 | block = MAX_BLOCKTIME; |
568 | |
1085 | |
569 | if (timercnt) |
1086 | if (timercnt) |
570 | { |
1087 | { |
571 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
1088 | ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; |
572 | if (block > to) block = to; |
1089 | if (block > to) block = to; |
573 | } |
1090 | } |
574 | |
1091 | |
575 | if (periodiccnt) |
1092 | if (periodiccnt) |
576 | { |
1093 | { |
577 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
1094 | ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; |
578 | if (block > to) block = to; |
1095 | if (block > to) block = to; |
579 | } |
1096 | } |
580 | |
1097 | |
581 | if (block < 0.) block = 0.; |
1098 | if (block < 0.) block = 0.; |
582 | } |
1099 | } |
583 | |
1100 | |
584 | method_poll (block); |
1101 | method_poll (EV_A_ block); |
585 | |
1102 | |
586 | /* update ev_now, do magic */ |
1103 | /* update rt_now, do magic */ |
587 | time_update (); |
1104 | time_update (EV_A); |
588 | |
1105 | |
589 | /* queue pending timers and reschedule them */ |
1106 | /* queue pending timers and reschedule them */ |
|
|
1107 | timers_reify (EV_A); /* relative timers called last */ |
590 | periodics_reify (); /* absolute timers first */ |
1108 | periodics_reify (EV_A); /* absolute timers called first */ |
591 | timers_reify (); /* relative timers second */ |
|
|
592 | |
1109 | |
593 | /* queue idle watchers unless io or timers are pending */ |
1110 | /* queue idle watchers unless io or timers are pending */ |
594 | if (!pendingcnt) |
1111 | if (!pendingcnt) |
595 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
1112 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
596 | |
1113 | |
597 | /* queue check and possibly idle watchers */ |
1114 | /* queue check watchers, to be executed first */ |
|
|
1115 | if (checkcnt) |
598 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1116 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
599 | |
1117 | |
600 | call_pending (); |
1118 | call_pending (EV_A); |
601 | } |
1119 | } |
602 | while (!ev_loop_done); |
1120 | while (activecnt && !loop_done); |
603 | |
1121 | |
604 | if (ev_loop_done != 2) |
1122 | if (loop_done != 2) |
605 | ev_loop_done = 0; |
1123 | loop_done = 0; |
|
|
1124 | } |
|
|
1125 | |
|
|
1126 | void |
|
|
1127 | ev_unloop (EV_P_ int how) |
|
|
1128 | { |
|
|
1129 | loop_done = how; |
606 | } |
1130 | } |
607 | |
1131 | |
608 | /*****************************************************************************/ |
1132 | /*****************************************************************************/ |
609 | |
1133 | |
610 | static void |
1134 | inline void |
611 | wlist_add (WL *head, WL elem) |
1135 | wlist_add (WL *head, WL elem) |
612 | { |
1136 | { |
613 | elem->next = *head; |
1137 | elem->next = *head; |
614 | *head = elem; |
1138 | *head = elem; |
615 | } |
1139 | } |
616 | |
1140 | |
617 | static void |
1141 | inline void |
618 | wlist_del (WL *head, WL elem) |
1142 | wlist_del (WL *head, WL elem) |
619 | { |
1143 | { |
620 | while (*head) |
1144 | while (*head) |
621 | { |
1145 | { |
622 | if (*head == elem) |
1146 | if (*head == elem) |
… | |
… | |
627 | |
1151 | |
628 | head = &(*head)->next; |
1152 | head = &(*head)->next; |
629 | } |
1153 | } |
630 | } |
1154 | } |
631 | |
1155 | |
632 | static void |
1156 | inline void |
633 | ev_clear (W w) |
1157 | ev_clear_pending (EV_P_ W w) |
634 | { |
1158 | { |
635 | if (w->pending) |
1159 | if (w->pending) |
636 | { |
1160 | { |
637 | pendings [w->pending - 1].w = 0; |
1161 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
638 | w->pending = 0; |
1162 | w->pending = 0; |
639 | } |
1163 | } |
640 | } |
1164 | } |
641 | |
1165 | |
642 | static void |
1166 | inline void |
643 | ev_start (W w, int active) |
1167 | ev_start (EV_P_ W w, int active) |
644 | { |
1168 | { |
|
|
1169 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1170 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1171 | |
645 | w->active = active; |
1172 | w->active = active; |
|
|
1173 | ev_ref (EV_A); |
646 | } |
1174 | } |
647 | |
1175 | |
648 | static void |
1176 | inline void |
649 | ev_stop (W w) |
1177 | ev_stop (EV_P_ W w) |
650 | { |
1178 | { |
|
|
1179 | ev_unref (EV_A); |
651 | w->active = 0; |
1180 | w->active = 0; |
652 | } |
1181 | } |
653 | |
1182 | |
654 | /*****************************************************************************/ |
1183 | /*****************************************************************************/ |
655 | |
1184 | |
656 | void |
1185 | void |
657 | evio_start (struct ev_io *w) |
1186 | ev_io_start (EV_P_ struct ev_io *w) |
658 | { |
1187 | { |
|
|
1188 | int fd = w->fd; |
|
|
1189 | |
659 | if (ev_is_active (w)) |
1190 | if (ev_is_active (w)) |
660 | return; |
1191 | return; |
661 | |
1192 | |
662 | int fd = w->fd; |
1193 | assert (("ev_io_start called with negative fd", fd >= 0)); |
663 | |
1194 | |
664 | ev_start ((W)w, 1); |
1195 | ev_start (EV_A_ (W)w, 1); |
665 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1196 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
666 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1197 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
667 | |
1198 | |
668 | ++fdchangecnt; |
1199 | fd_change (EV_A_ fd); |
669 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
670 | fdchanges [fdchangecnt - 1] = fd; |
|
|
671 | } |
1200 | } |
672 | |
1201 | |
673 | void |
1202 | void |
674 | evio_stop (struct ev_io *w) |
1203 | ev_io_stop (EV_P_ struct ev_io *w) |
675 | { |
1204 | { |
676 | ev_clear ((W)w); |
1205 | ev_clear_pending (EV_A_ (W)w); |
677 | if (!ev_is_active (w)) |
1206 | if (!ev_is_active (w)) |
678 | return; |
1207 | return; |
679 | |
1208 | |
680 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1209 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
681 | ev_stop ((W)w); |
1210 | ev_stop (EV_A_ (W)w); |
682 | |
1211 | |
683 | ++fdchangecnt; |
1212 | fd_change (EV_A_ w->fd); |
684 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
685 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
686 | } |
1213 | } |
687 | |
1214 | |
688 | void |
1215 | void |
689 | evtimer_start (struct ev_timer *w) |
1216 | ev_timer_start (EV_P_ struct ev_timer *w) |
690 | { |
1217 | { |
691 | if (ev_is_active (w)) |
1218 | if (ev_is_active (w)) |
692 | return; |
1219 | return; |
693 | |
1220 | |
694 | w->at += now; |
1221 | ((WT)w)->at += mn_now; |
695 | |
1222 | |
696 | assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); |
1223 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
697 | |
1224 | |
698 | ev_start ((W)w, ++timercnt); |
1225 | ev_start (EV_A_ (W)w, ++timercnt); |
699 | array_needsize (timers, timermax, timercnt, ); |
1226 | array_needsize (timers, timermax, timercnt, ); |
700 | timers [timercnt - 1] = w; |
1227 | timers [timercnt - 1] = w; |
701 | upheap ((WT *)timers, timercnt - 1); |
1228 | upheap ((WT *)timers, timercnt - 1); |
702 | } |
|
|
703 | |
1229 | |
|
|
1230 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1231 | } |
|
|
1232 | |
704 | void |
1233 | void |
705 | evtimer_stop (struct ev_timer *w) |
1234 | ev_timer_stop (EV_P_ struct ev_timer *w) |
706 | { |
1235 | { |
707 | ev_clear ((W)w); |
1236 | ev_clear_pending (EV_A_ (W)w); |
708 | if (!ev_is_active (w)) |
1237 | if (!ev_is_active (w)) |
709 | return; |
1238 | return; |
710 | |
1239 | |
|
|
1240 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1241 | |
711 | if (w->active < timercnt--) |
1242 | if (((W)w)->active < timercnt--) |
712 | { |
1243 | { |
713 | timers [w->active - 1] = timers [timercnt]; |
1244 | timers [((W)w)->active - 1] = timers [timercnt]; |
714 | downheap ((WT *)timers, timercnt, w->active - 1); |
1245 | downheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
715 | } |
1246 | } |
716 | |
1247 | |
717 | w->at = w->repeat; |
1248 | ((WT)w)->at = w->repeat; |
718 | |
1249 | |
719 | ev_stop ((W)w); |
1250 | ev_stop (EV_A_ (W)w); |
720 | } |
1251 | } |
721 | |
1252 | |
722 | void |
1253 | void |
723 | evtimer_again (struct ev_timer *w) |
1254 | ev_timer_again (EV_P_ struct ev_timer *w) |
724 | { |
1255 | { |
725 | if (ev_is_active (w)) |
1256 | if (ev_is_active (w)) |
726 | { |
1257 | { |
727 | if (w->repeat) |
1258 | if (w->repeat) |
728 | { |
1259 | { |
729 | w->at = now + w->repeat; |
1260 | ((WT)w)->at = mn_now + w->repeat; |
730 | downheap ((WT *)timers, timercnt, w->active - 1); |
1261 | downheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
731 | } |
1262 | } |
732 | else |
1263 | else |
733 | evtimer_stop (w); |
1264 | ev_timer_stop (EV_A_ w); |
734 | } |
1265 | } |
735 | else if (w->repeat) |
1266 | else if (w->repeat) |
736 | evtimer_start (w); |
1267 | ev_timer_start (EV_A_ w); |
737 | } |
1268 | } |
738 | |
1269 | |
739 | void |
1270 | void |
740 | evperiodic_start (struct ev_periodic *w) |
1271 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
741 | { |
1272 | { |
742 | if (ev_is_active (w)) |
1273 | if (ev_is_active (w)) |
743 | return; |
1274 | return; |
744 | |
1275 | |
745 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
1276 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
746 | |
1277 | |
747 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1278 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
748 | if (w->interval) |
1279 | if (w->interval) |
749 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
1280 | ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; |
750 | |
1281 | |
751 | ev_start ((W)w, ++periodiccnt); |
1282 | ev_start (EV_A_ (W)w, ++periodiccnt); |
752 | array_needsize (periodics, periodicmax, periodiccnt, ); |
1283 | array_needsize (periodics, periodicmax, periodiccnt, ); |
753 | periodics [periodiccnt - 1] = w; |
1284 | periodics [periodiccnt - 1] = w; |
754 | upheap ((WT *)periodics, periodiccnt - 1); |
1285 | upheap ((WT *)periodics, periodiccnt - 1); |
755 | } |
|
|
756 | |
1286 | |
|
|
1287 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1288 | } |
|
|
1289 | |
757 | void |
1290 | void |
758 | evperiodic_stop (struct ev_periodic *w) |
1291 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
759 | { |
1292 | { |
760 | ev_clear ((W)w); |
1293 | ev_clear_pending (EV_A_ (W)w); |
761 | if (!ev_is_active (w)) |
1294 | if (!ev_is_active (w)) |
762 | return; |
1295 | return; |
763 | |
1296 | |
|
|
1297 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1298 | |
764 | if (w->active < periodiccnt--) |
1299 | if (((W)w)->active < periodiccnt--) |
765 | { |
1300 | { |
766 | periodics [w->active - 1] = periodics [periodiccnt]; |
1301 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
767 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
1302 | downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
768 | } |
1303 | } |
769 | |
1304 | |
770 | ev_stop ((W)w); |
1305 | ev_stop (EV_A_ (W)w); |
771 | } |
1306 | } |
772 | |
1307 | |
773 | void |
1308 | void |
774 | evsignal_start (struct ev_signal *w) |
1309 | ev_idle_start (EV_P_ struct ev_idle *w) |
775 | { |
1310 | { |
776 | if (ev_is_active (w)) |
1311 | if (ev_is_active (w)) |
777 | return; |
1312 | return; |
778 | |
1313 | |
|
|
1314 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1315 | array_needsize (idles, idlemax, idlecnt, ); |
|
|
1316 | idles [idlecnt - 1] = w; |
|
|
1317 | } |
|
|
1318 | |
|
|
1319 | void |
|
|
1320 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1321 | { |
|
|
1322 | ev_clear_pending (EV_A_ (W)w); |
|
|
1323 | if (ev_is_active (w)) |
|
|
1324 | return; |
|
|
1325 | |
|
|
1326 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
|
|
1327 | ev_stop (EV_A_ (W)w); |
|
|
1328 | } |
|
|
1329 | |
|
|
1330 | void |
|
|
1331 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1332 | { |
|
|
1333 | if (ev_is_active (w)) |
|
|
1334 | return; |
|
|
1335 | |
|
|
1336 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1337 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
1338 | prepares [preparecnt - 1] = w; |
|
|
1339 | } |
|
|
1340 | |
|
|
1341 | void |
|
|
1342 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1343 | { |
|
|
1344 | ev_clear_pending (EV_A_ (W)w); |
|
|
1345 | if (ev_is_active (w)) |
|
|
1346 | return; |
|
|
1347 | |
|
|
1348 | prepares [((W)w)->active - 1] = prepares [--preparecnt]; |
|
|
1349 | ev_stop (EV_A_ (W)w); |
|
|
1350 | } |
|
|
1351 | |
|
|
1352 | void |
|
|
1353 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1354 | { |
|
|
1355 | if (ev_is_active (w)) |
|
|
1356 | return; |
|
|
1357 | |
|
|
1358 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1359 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
1360 | checks [checkcnt - 1] = w; |
|
|
1361 | } |
|
|
1362 | |
|
|
1363 | void |
|
|
1364 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1365 | { |
|
|
1366 | ev_clear_pending (EV_A_ (W)w); |
|
|
1367 | if (ev_is_active (w)) |
|
|
1368 | return; |
|
|
1369 | |
|
|
1370 | checks [((W)w)->active - 1] = checks [--checkcnt]; |
|
|
1371 | ev_stop (EV_A_ (W)w); |
|
|
1372 | } |
|
|
1373 | |
|
|
1374 | #ifndef SA_RESTART |
|
|
1375 | # define SA_RESTART 0 |
|
|
1376 | #endif |
|
|
1377 | |
|
|
1378 | void |
|
|
1379 | ev_signal_start (EV_P_ struct ev_signal *w) |
|
|
1380 | { |
|
|
1381 | #if EV_MULTIPLICITY |
|
|
1382 | assert (("signal watchers are only supported in the default loop", loop == default_loop)); |
|
|
1383 | #endif |
|
|
1384 | if (ev_is_active (w)) |
|
|
1385 | return; |
|
|
1386 | |
|
|
1387 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1388 | |
779 | ev_start ((W)w, 1); |
1389 | ev_start (EV_A_ (W)w, 1); |
780 | array_needsize (signals, signalmax, w->signum, signals_init); |
1390 | array_needsize (signals, signalmax, w->signum, signals_init); |
781 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1391 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
782 | |
1392 | |
783 | if (!w->next) |
1393 | if (!((WL)w)->next) |
784 | { |
1394 | { |
|
|
1395 | #if WIN32 |
|
|
1396 | signal (w->signum, sighandler); |
|
|
1397 | #else |
785 | struct sigaction sa; |
1398 | struct sigaction sa; |
786 | sa.sa_handler = sighandler; |
1399 | sa.sa_handler = sighandler; |
787 | sigfillset (&sa.sa_mask); |
1400 | sigfillset (&sa.sa_mask); |
788 | sa.sa_flags = 0; |
1401 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
789 | sigaction (w->signum, &sa, 0); |
1402 | sigaction (w->signum, &sa, 0); |
|
|
1403 | #endif |
790 | } |
1404 | } |
791 | } |
1405 | } |
792 | |
1406 | |
793 | void |
1407 | void |
794 | evsignal_stop (struct ev_signal *w) |
1408 | ev_signal_stop (EV_P_ struct ev_signal *w) |
795 | { |
1409 | { |
796 | ev_clear ((W)w); |
1410 | ev_clear_pending (EV_A_ (W)w); |
797 | if (!ev_is_active (w)) |
1411 | if (!ev_is_active (w)) |
798 | return; |
1412 | return; |
799 | |
1413 | |
800 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1414 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
801 | ev_stop ((W)w); |
1415 | ev_stop (EV_A_ (W)w); |
802 | |
1416 | |
803 | if (!signals [w->signum - 1].head) |
1417 | if (!signals [w->signum - 1].head) |
804 | signal (w->signum, SIG_DFL); |
1418 | signal (w->signum, SIG_DFL); |
805 | } |
1419 | } |
806 | |
1420 | |
807 | void evidle_start (struct ev_idle *w) |
1421 | void |
|
|
1422 | ev_child_start (EV_P_ struct ev_child *w) |
808 | { |
1423 | { |
|
|
1424 | #if EV_MULTIPLICITY |
|
|
1425 | assert (("child watchers are only supported in the default loop", loop == default_loop)); |
|
|
1426 | #endif |
809 | if (ev_is_active (w)) |
1427 | if (ev_is_active (w)) |
810 | return; |
1428 | return; |
811 | |
1429 | |
812 | ev_start ((W)w, ++idlecnt); |
1430 | ev_start (EV_A_ (W)w, 1); |
813 | array_needsize (idles, idlemax, idlecnt, ); |
1431 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
814 | idles [idlecnt - 1] = w; |
|
|
815 | } |
1432 | } |
816 | |
1433 | |
817 | void evidle_stop (struct ev_idle *w) |
1434 | void |
|
|
1435 | ev_child_stop (EV_P_ struct ev_child *w) |
818 | { |
1436 | { |
819 | ev_clear ((W)w); |
1437 | ev_clear_pending (EV_A_ (W)w); |
820 | if (ev_is_active (w)) |
1438 | if (ev_is_active (w)) |
821 | return; |
1439 | return; |
822 | |
1440 | |
823 | idles [w->active - 1] = idles [--idlecnt]; |
1441 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
824 | ev_stop ((W)w); |
1442 | ev_stop (EV_A_ (W)w); |
825 | } |
|
|
826 | |
|
|
827 | void evcheck_start (struct ev_check *w) |
|
|
828 | { |
|
|
829 | if (ev_is_active (w)) |
|
|
830 | return; |
|
|
831 | |
|
|
832 | ev_start ((W)w, ++checkcnt); |
|
|
833 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
834 | checks [checkcnt - 1] = w; |
|
|
835 | } |
|
|
836 | |
|
|
837 | void evcheck_stop (struct ev_check *w) |
|
|
838 | { |
|
|
839 | ev_clear ((W)w); |
|
|
840 | if (ev_is_active (w)) |
|
|
841 | return; |
|
|
842 | |
|
|
843 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
844 | ev_stop ((W)w); |
|
|
845 | } |
1443 | } |
846 | |
1444 | |
847 | /*****************************************************************************/ |
1445 | /*****************************************************************************/ |
848 | |
1446 | |
849 | struct ev_once |
1447 | struct ev_once |
… | |
… | |
853 | void (*cb)(int revents, void *arg); |
1451 | void (*cb)(int revents, void *arg); |
854 | void *arg; |
1452 | void *arg; |
855 | }; |
1453 | }; |
856 | |
1454 | |
857 | static void |
1455 | static void |
858 | once_cb (struct ev_once *once, int revents) |
1456 | once_cb (EV_P_ struct ev_once *once, int revents) |
859 | { |
1457 | { |
860 | void (*cb)(int revents, void *arg) = once->cb; |
1458 | void (*cb)(int revents, void *arg) = once->cb; |
861 | void *arg = once->arg; |
1459 | void *arg = once->arg; |
862 | |
1460 | |
863 | evio_stop (&once->io); |
1461 | ev_io_stop (EV_A_ &once->io); |
864 | evtimer_stop (&once->to); |
1462 | ev_timer_stop (EV_A_ &once->to); |
865 | free (once); |
1463 | ev_free (once); |
866 | |
1464 | |
867 | cb (revents, arg); |
1465 | cb (revents, arg); |
868 | } |
1466 | } |
869 | |
1467 | |
870 | static void |
1468 | static void |
871 | once_cb_io (struct ev_io *w, int revents) |
1469 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
872 | { |
1470 | { |
873 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1471 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
874 | } |
1472 | } |
875 | |
1473 | |
876 | static void |
1474 | static void |
877 | once_cb_to (struct ev_timer *w, int revents) |
1475 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
878 | { |
1476 | { |
879 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1477 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
880 | } |
1478 | } |
881 | |
1479 | |
882 | void |
1480 | void |
883 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1481 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
884 | { |
1482 | { |
885 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
1483 | struct ev_once *once = ev_malloc (sizeof (struct ev_once)); |
886 | |
1484 | |
887 | if (!once) |
1485 | if (!once) |
888 | cb (EV_ERROR, arg); |
1486 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
889 | else |
1487 | else |
890 | { |
1488 | { |
891 | once->cb = cb; |
1489 | once->cb = cb; |
892 | once->arg = arg; |
1490 | once->arg = arg; |
893 | |
1491 | |
894 | evw_init (&once->io, once_cb_io); |
1492 | ev_watcher_init (&once->io, once_cb_io); |
895 | |
|
|
896 | if (fd >= 0) |
1493 | if (fd >= 0) |
897 | { |
1494 | { |
898 | evio_set (&once->io, fd, events); |
1495 | ev_io_set (&once->io, fd, events); |
899 | evio_start (&once->io); |
1496 | ev_io_start (EV_A_ &once->io); |
900 | } |
1497 | } |
901 | |
1498 | |
902 | evw_init (&once->to, once_cb_to); |
1499 | ev_watcher_init (&once->to, once_cb_to); |
903 | |
|
|
904 | if (timeout >= 0.) |
1500 | if (timeout >= 0.) |
905 | { |
1501 | { |
906 | evtimer_set (&once->to, timeout, 0.); |
1502 | ev_timer_set (&once->to, timeout, 0.); |
907 | evtimer_start (&once->to); |
1503 | ev_timer_start (EV_A_ &once->to); |
908 | } |
1504 | } |
909 | } |
1505 | } |
910 | } |
1506 | } |
911 | |
1507 | |
912 | /*****************************************************************************/ |
|
|
913 | |
|
|
914 | #if 0 |
|
|
915 | |
|
|
916 | struct ev_io wio; |
|
|
917 | |
|
|
918 | static void |
|
|
919 | sin_cb (struct ev_io *w, int revents) |
|
|
920 | { |
|
|
921 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
922 | } |
|
|
923 | |
|
|
924 | static void |
|
|
925 | ocb (struct ev_timer *w, int revents) |
|
|
926 | { |
|
|
927 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
928 | evtimer_stop (w); |
|
|
929 | evtimer_start (w); |
|
|
930 | } |
|
|
931 | |
|
|
932 | static void |
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933 | scb (struct ev_signal *w, int revents) |
|
|
934 | { |
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|
935 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
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936 | evio_stop (&wio); |
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937 | evio_start (&wio); |
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|
938 | } |
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939 | |
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940 | static void |
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941 | gcb (struct ev_signal *w, int revents) |
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|
942 | { |
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943 | fprintf (stderr, "generic %x\n", revents); |
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944 | |
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945 | } |
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946 | |
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|
947 | int main (void) |
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|
948 | { |
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949 | ev_init (0); |
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950 | |
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951 | evio_init (&wio, sin_cb, 0, EV_READ); |
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952 | evio_start (&wio); |
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953 | |
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954 | struct ev_timer t[10000]; |
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955 | |
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|
956 | #if 0 |
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957 | int i; |
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|
958 | for (i = 0; i < 10000; ++i) |
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|
959 | { |
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|
960 | struct ev_timer *w = t + i; |
|
|
961 | evw_init (w, ocb, i); |
|
|
962 | evtimer_init_abs (w, ocb, drand48 (), 0.99775533); |
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963 | evtimer_start (w); |
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964 | if (drand48 () < 0.5) |
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|
965 | evtimer_stop (w); |
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|
966 | } |
|
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967 | #endif |
|
|
968 | |
|
|
969 | struct ev_timer t1; |
|
|
970 | evtimer_init (&t1, ocb, 5, 10); |
|
|
971 | evtimer_start (&t1); |
|
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972 | |
|
|
973 | struct ev_signal sig; |
|
|
974 | evsignal_init (&sig, scb, SIGQUIT); |
|
|
975 | evsignal_start (&sig); |
|
|
976 | |
|
|
977 | struct ev_check cw; |
|
|
978 | evcheck_init (&cw, gcb); |
|
|
979 | evcheck_start (&cw); |
|
|
980 | |
|
|
981 | struct ev_idle iw; |
|
|
982 | evidle_init (&iw, gcb); |
|
|
983 | evidle_start (&iw); |
|
|
984 | |
|
|
985 | ev_loop (0); |
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|
986 | |
|
|
987 | return 0; |
|
|
988 | } |
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|
989 | |
|
|
990 | #endif |
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991 | |
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992 | |
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993 | |
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994 | |
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|