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> |
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33 | #include <fcntl.h> |
59 | #include <fcntl.h> |
34 | #include <signal.h> |
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35 | #include <stddef.h> |
60 | #include <stddef.h> |
36 | |
61 | |
37 | #include <stdio.h> |
62 | #include <stdio.h> |
38 | |
63 | |
39 | #include <assert.h> |
64 | #include <assert.h> |
40 | #include <errno.h> |
65 | #include <errno.h> |
41 | #include <sys/time.h> |
66 | #include <sys/types.h> |
42 | #include <time.h> |
67 | #include <time.h> |
43 | |
68 | |
44 | #define HAVE_EPOLL 1 |
69 | #include <signal.h> |
45 | |
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 | |
46 | #ifndef HAVE_MONOTONIC |
78 | #ifndef EV_USE_MONOTONIC |
47 | # ifdef CLOCK_MONOTONIC |
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48 | # define HAVE_MONOTONIC 1 |
79 | # define EV_USE_MONOTONIC 1 |
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80 | #endif |
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81 | |
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82 | #ifndef EV_USE_SELECT |
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83 | # define EV_USE_SELECT 1 |
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84 | #endif |
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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 | |
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90 | #ifndef EV_USE_EPOLL |
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91 | # define EV_USE_EPOLL 0 |
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92 | #endif |
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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 |
49 | # endif |
105 | # endif |
50 | #endif |
106 | #endif |
51 | |
107 | |
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 |
108 | #ifndef EV_USE_REALTIME |
61 | # define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
109 | # define EV_USE_REALTIME 1 |
62 | #endif |
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 | |
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119 | #ifndef CLOCK_REALTIME |
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120 | # undef EV_USE_REALTIME |
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121 | # define EV_USE_REALTIME 0 |
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122 | #endif |
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123 | |
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124 | /**/ |
63 | |
125 | |
64 | #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) */ |
65 | #define MAX_BLOCKTIME 60. |
127 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ |
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128 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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129 | /*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ |
66 | |
130 | |
67 | #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) |
68 | |
146 | |
69 | typedef struct ev_watcher *W; |
147 | typedef struct ev_watcher *W; |
70 | typedef struct ev_watcher_list *WL; |
148 | typedef struct ev_watcher_list *WL; |
71 | typedef struct ev_watcher_time *WT; |
149 | typedef struct ev_watcher_time *WT; |
72 | |
150 | |
73 | static ev_tstamp now, diff; /* monotonic clock */ |
151 | 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 | |
152 | |
77 | static int have_monotonic; /* runtime */ |
153 | #include "ev_win32.c" |
78 | |
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79 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
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80 | static void (*method_modify)(int fd, int oev, int nev); |
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81 | static void (*method_poll)(ev_tstamp timeout); |
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82 | |
154 | |
83 | /*****************************************************************************/ |
155 | /*****************************************************************************/ |
84 | |
156 | |
85 | 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 |
86 | ev_time (void) |
239 | ev_time (void) |
87 | { |
240 | { |
88 | #if HAVE_REALTIME |
241 | #if EV_USE_REALTIME |
89 | struct timespec ts; |
242 | struct timespec ts; |
90 | clock_gettime (CLOCK_REALTIME, &ts); |
243 | clock_gettime (CLOCK_REALTIME, &ts); |
91 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
244 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
92 | #else |
245 | #else |
93 | struct timeval tv; |
246 | struct timeval tv; |
94 | gettimeofday (&tv, 0); |
247 | gettimeofday (&tv, 0); |
95 | return tv.tv_sec + tv.tv_usec * 1e-6; |
248 | return tv.tv_sec + tv.tv_usec * 1e-6; |
96 | #endif |
249 | #endif |
97 | } |
250 | } |
98 | |
251 | |
99 | static ev_tstamp |
252 | inline ev_tstamp |
100 | get_clock (void) |
253 | get_clock (void) |
101 | { |
254 | { |
102 | #if HAVE_MONOTONIC |
255 | #if EV_USE_MONOTONIC |
103 | if (have_monotonic) |
256 | if (expect_true (have_monotonic)) |
104 | { |
257 | { |
105 | struct timespec ts; |
258 | struct timespec ts; |
106 | clock_gettime (CLOCK_MONOTONIC, &ts); |
259 | clock_gettime (CLOCK_MONOTONIC, &ts); |
107 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
260 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
108 | } |
261 | } |
109 | #endif |
262 | #endif |
110 | |
263 | |
111 | return ev_time (); |
264 | return ev_time (); |
112 | } |
265 | } |
113 | |
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 | |
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273 | #define array_roundsize(type,n) ((n) | 4 & ~3) |
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274 | |
114 | #define array_needsize(base,cur,cnt,init) \ |
275 | #define array_needsize(type,base,cur,cnt,init) \ |
115 | if ((cnt) > cur) \ |
276 | if (expect_false ((cnt) > cur)) \ |
116 | { \ |
277 | { \ |
117 | int newcnt = cur ? cur << 1 : 16; \ |
278 | int newcnt = cur; \ |
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279 | do \ |
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280 | { \ |
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281 | newcnt = array_roundsize (type, newcnt << 1); \ |
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282 | } \ |
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283 | while ((cnt) > newcnt); \ |
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284 | \ |
118 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
285 | base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\ |
119 | init (base + cur, newcnt - cur); \ |
286 | init (base + cur, newcnt - cur); \ |
120 | cur = newcnt; \ |
287 | cur = newcnt; \ |
121 | } |
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; |
122 | |
305 | |
123 | /*****************************************************************************/ |
306 | /*****************************************************************************/ |
124 | |
307 | |
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 |
308 | static void |
138 | anfds_init (ANFD *base, int count) |
309 | anfds_init (ANFD *base, int count) |
139 | { |
310 | { |
140 | while (count--) |
311 | while (count--) |
141 | { |
312 | { |
142 | base->head = 0; |
313 | base->head = 0; |
143 | base->wev = base->rev = EV_NONE; |
314 | base->events = EV_NONE; |
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315 | base->reify = 0; |
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316 | |
144 | ++base; |
317 | ++base; |
145 | } |
318 | } |
146 | } |
319 | } |
147 | |
320 | |
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 |
321 | static void |
158 | event (W w, int events) |
322 | event (EV_P_ W w, int events) |
159 | { |
323 | { |
160 | if (w->active) |
324 | if (w->pending) |
161 | { |
325 | { |
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; |
326 | pendings [ABSPRI (w)][w->pending - 1].events |= events; |
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327 | return; |
166 | } |
328 | } |
167 | } |
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168 | |
329 | |
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330 | w->pending = ++pendingcnt [ABSPRI (w)]; |
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331 | array_needsize (ANPENDING, pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void)); |
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332 | pendings [ABSPRI (w)][w->pending - 1].w = w; |
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333 | pendings [ABSPRI (w)][w->pending - 1].events = events; |
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334 | } |
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335 | |
169 | static void |
336 | static void |
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337 | queue_events (EV_P_ W *events, int eventcnt, int type) |
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338 | { |
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339 | int i; |
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340 | |
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341 | for (i = 0; i < eventcnt; ++i) |
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342 | event (EV_A_ events [i], type); |
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343 | } |
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344 | |
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345 | static void |
170 | fd_event (int fd, int events) |
346 | fd_event (EV_P_ int fd, int events) |
171 | { |
347 | { |
172 | ANFD *anfd = anfds + fd; |
348 | ANFD *anfd = anfds + fd; |
173 | struct ev_io *w; |
349 | struct ev_io *w; |
174 | |
350 | |
175 | for (w = anfd->head; w; w = w->next) |
351 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
176 | { |
352 | { |
177 | int ev = w->events & events; |
353 | int ev = w->events & events; |
178 | |
354 | |
179 | if (ev) |
355 | if (ev) |
180 | event ((W)w, ev); |
356 | event (EV_A_ (W)w, ev); |
181 | } |
357 | } |
182 | } |
358 | } |
183 | |
359 | |
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360 | /*****************************************************************************/ |
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361 | |
184 | static void |
362 | static void |
185 | queue_events (W *events, int eventcnt, int type) |
363 | fd_reify (EV_P) |
186 | { |
364 | { |
187 | int i; |
365 | int i; |
188 | |
366 | |
189 | for (i = 0; i < eventcnt; ++i) |
367 | for (i = 0; i < fdchangecnt; ++i) |
190 | event (events [i], type); |
368 | { |
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369 | int fd = fdchanges [i]; |
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370 | ANFD *anfd = anfds + fd; |
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371 | struct ev_io *w; |
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372 | |
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373 | int events = 0; |
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374 | |
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375 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
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376 | events |= w->events; |
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377 | |
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378 | anfd->reify = 0; |
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379 | |
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380 | method_modify (EV_A_ fd, anfd->events, events); |
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381 | anfd->events = events; |
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382 | } |
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383 | |
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384 | fdchangecnt = 0; |
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385 | } |
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386 | |
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387 | static void |
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388 | fd_change (EV_P_ int fd) |
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389 | { |
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390 | if (anfds [fd].reify) |
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391 | return; |
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392 | |
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393 | anfds [fd].reify = 1; |
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394 | |
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395 | ++fdchangecnt; |
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396 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); |
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397 | fdchanges [fdchangecnt - 1] = fd; |
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398 | } |
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399 | |
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400 | static void |
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401 | fd_kill (EV_P_ int fd) |
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402 | { |
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403 | struct ev_io *w; |
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404 | |
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405 | while ((w = (struct ev_io *)anfds [fd].head)) |
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406 | { |
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407 | ev_io_stop (EV_A_ w); |
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408 | event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
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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 | |
|
|
422 | /* called on EBADF to verify fds */ |
|
|
423 | static void |
|
|
424 | fd_ebadf (EV_P) |
|
|
425 | { |
|
|
426 | int fd; |
|
|
427 | |
|
|
428 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
429 | if (anfds [fd].events) |
|
|
430 | if (!fd_valid (fd) == -1 && errno == EBADF) |
|
|
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) |
|
|
442 | { |
|
|
443 | fd_kill (EV_A_ fd); |
|
|
444 | return; |
|
|
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 | } |
191 | } |
461 | } |
192 | |
462 | |
193 | /*****************************************************************************/ |
463 | /*****************************************************************************/ |
194 | |
464 | |
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 |
465 | static void |
202 | upheap (WT *timers, int k) |
466 | upheap (WT *heap, int k) |
203 | { |
467 | { |
204 | WT w = timers [k]; |
468 | WT w = heap [k]; |
205 | |
469 | |
206 | while (k && timers [k >> 1]->at > w->at) |
470 | while (k && heap [k >> 1]->at > w->at) |
207 | { |
471 | { |
208 | timers [k] = timers [k >> 1]; |
472 | heap [k] = heap [k >> 1]; |
209 | timers [k]->active = k + 1; |
473 | ((W)heap [k])->active = k + 1; |
210 | k >>= 1; |
474 | k >>= 1; |
211 | } |
475 | } |
212 | |
476 | |
213 | timers [k] = w; |
477 | heap [k] = w; |
214 | timers [k]->active = k + 1; |
478 | ((W)heap [k])->active = k + 1; |
215 | |
479 | |
216 | } |
480 | } |
217 | |
481 | |
218 | static void |
482 | static void |
219 | downheap (WT *timers, int N, int k) |
483 | downheap (WT *heap, int N, int k) |
220 | { |
484 | { |
221 | WT w = timers [k]; |
485 | WT w = heap [k]; |
222 | |
486 | |
223 | while (k < (N >> 1)) |
487 | while (k < (N >> 1)) |
224 | { |
488 | { |
225 | int j = k << 1; |
489 | int j = k << 1; |
226 | |
490 | |
227 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
491 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
228 | ++j; |
492 | ++j; |
229 | |
493 | |
230 | if (w->at <= timers [j]->at) |
494 | if (w->at <= heap [j]->at) |
231 | break; |
495 | break; |
232 | |
496 | |
233 | timers [k] = timers [j]; |
497 | heap [k] = heap [j]; |
234 | timers [k]->active = k + 1; |
498 | ((W)heap [k])->active = k + 1; |
235 | k = j; |
499 | k = j; |
236 | } |
500 | } |
237 | |
501 | |
238 | timers [k] = w; |
502 | heap [k] = w; |
239 | timers [k]->active = k + 1; |
503 | ((W)heap [k])->active = k + 1; |
240 | } |
504 | } |
241 | |
505 | |
242 | /*****************************************************************************/ |
506 | /*****************************************************************************/ |
243 | |
507 | |
244 | typedef struct |
508 | typedef struct |
245 | { |
509 | { |
246 | struct ev_signal *head; |
510 | WL head; |
247 | sig_atomic_t gotsig; |
511 | sig_atomic_t volatile gotsig; |
248 | } ANSIG; |
512 | } ANSIG; |
249 | |
513 | |
250 | static ANSIG *signals; |
514 | static ANSIG *signals; |
251 | static int signalmax; |
515 | static int signalmax; |
252 | |
516 | |
253 | static int sigpipe [2]; |
517 | static int sigpipe [2]; |
254 | static sig_atomic_t gotsig; |
518 | static sig_atomic_t volatile gotsig; |
255 | static struct ev_io sigev; |
519 | static struct ev_io sigev; |
256 | |
520 | |
257 | static void |
521 | static void |
258 | signals_init (ANSIG *base, int count) |
522 | signals_init (ANSIG *base, int count) |
259 | { |
523 | { |
260 | while (count--) |
524 | while (count--) |
261 | { |
525 | { |
262 | base->head = 0; |
526 | base->head = 0; |
263 | base->gotsig = 0; |
527 | base->gotsig = 0; |
|
|
528 | |
264 | ++base; |
529 | ++base; |
265 | } |
530 | } |
266 | } |
531 | } |
267 | |
532 | |
268 | static void |
533 | static void |
269 | sighandler (int signum) |
534 | sighandler (int signum) |
270 | { |
535 | { |
|
|
536 | #if WIN32 |
|
|
537 | signal (signum, sighandler); |
|
|
538 | #endif |
|
|
539 | |
271 | signals [signum - 1].gotsig = 1; |
540 | signals [signum - 1].gotsig = 1; |
272 | |
541 | |
273 | if (!gotsig) |
542 | if (!gotsig) |
274 | { |
543 | { |
|
|
544 | int old_errno = errno; |
275 | gotsig = 1; |
545 | gotsig = 1; |
|
|
546 | #ifdef WIN32 |
|
|
547 | send (sigpipe [1], &signum, 1, MSG_DONTWAIT); |
|
|
548 | #else |
276 | write (sigpipe [1], &gotsig, 1); |
549 | write (sigpipe [1], &signum, 1); |
|
|
550 | #endif |
|
|
551 | errno = old_errno; |
277 | } |
552 | } |
278 | } |
553 | } |
279 | |
554 | |
280 | static void |
555 | static void |
281 | sigcb (struct ev_io *iow, int revents) |
556 | sigcb (EV_P_ struct ev_io *iow, int revents) |
282 | { |
557 | { |
283 | struct ev_signal *w; |
558 | WL w; |
284 | int sig; |
559 | int signum; |
285 | |
560 | |
|
|
561 | #ifdef WIN32 |
|
|
562 | recv (sigpipe [0], &revents, 1, MSG_DONTWAIT); |
|
|
563 | #else |
|
|
564 | read (sigpipe [0], &revents, 1); |
|
|
565 | #endif |
286 | gotsig = 0; |
566 | gotsig = 0; |
287 | read (sigpipe [0], &revents, 1); |
|
|
288 | |
567 | |
289 | for (sig = signalmax; sig--; ) |
568 | for (signum = signalmax; signum--; ) |
290 | if (signals [sig].gotsig) |
569 | if (signals [signum].gotsig) |
291 | { |
570 | { |
292 | signals [sig].gotsig = 0; |
571 | signals [signum].gotsig = 0; |
293 | |
572 | |
294 | for (w = signals [sig].head; w; w = w->next) |
573 | for (w = signals [signum].head; w; w = w->next) |
295 | event ((W)w, EV_SIGNAL); |
574 | event (EV_A_ (W)w, EV_SIGNAL); |
296 | } |
575 | } |
297 | } |
576 | } |
298 | |
577 | |
299 | static void |
578 | static void |
300 | siginit (void) |
579 | siginit (EV_P) |
301 | { |
580 | { |
|
|
581 | #ifndef WIN32 |
302 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
582 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
303 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
583 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
304 | |
584 | |
305 | /* rather than sort out wether we really need nb, set it */ |
585 | /* rather than sort out wether we really need nb, set it */ |
306 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
586 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
307 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
587 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
588 | #endif |
308 | |
589 | |
309 | evio_set (&sigev, sigpipe [0], EV_READ); |
590 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
310 | evio_start (&sigev); |
591 | ev_io_start (EV_A_ &sigev); |
|
|
592 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
311 | } |
593 | } |
312 | |
594 | |
313 | /*****************************************************************************/ |
595 | /*****************************************************************************/ |
314 | |
596 | |
315 | static struct ev_idle **idles; |
597 | static struct ev_child *childs [PID_HASHSIZE]; |
316 | static int idlemax, idlecnt; |
|
|
317 | |
598 | |
318 | static struct ev_check **checks; |
599 | #ifndef WIN32 |
319 | static int checkmax, checkcnt; |
600 | |
|
|
601 | static struct ev_signal childev; |
|
|
602 | |
|
|
603 | #ifndef WCONTINUED |
|
|
604 | # define WCONTINUED 0 |
|
|
605 | #endif |
|
|
606 | |
|
|
607 | static void |
|
|
608 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
|
|
609 | { |
|
|
610 | struct ev_child *w; |
|
|
611 | |
|
|
612 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
613 | if (w->pid == pid || !w->pid) |
|
|
614 | { |
|
|
615 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
|
|
616 | w->rpid = pid; |
|
|
617 | w->rstatus = status; |
|
|
618 | event (EV_A_ (W)w, EV_CHILD); |
|
|
619 | } |
|
|
620 | } |
|
|
621 | |
|
|
622 | static void |
|
|
623 | childcb (EV_P_ struct ev_signal *sw, int revents) |
|
|
624 | { |
|
|
625 | int pid, status; |
|
|
626 | |
|
|
627 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
|
|
628 | { |
|
|
629 | /* make sure we are called again until all childs have been reaped */ |
|
|
630 | event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
631 | |
|
|
632 | child_reap (EV_A_ sw, pid, pid, status); |
|
|
633 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
|
|
634 | } |
|
|
635 | } |
|
|
636 | |
|
|
637 | #endif |
320 | |
638 | |
321 | /*****************************************************************************/ |
639 | /*****************************************************************************/ |
322 | |
640 | |
|
|
641 | #if EV_USE_KQUEUE |
|
|
642 | # include "ev_kqueue.c" |
|
|
643 | #endif |
323 | #if HAVE_EPOLL |
644 | #if EV_USE_EPOLL |
324 | # include "ev_epoll.c" |
645 | # include "ev_epoll.c" |
325 | #endif |
646 | #endif |
|
|
647 | #if EV_USE_POLL |
|
|
648 | # include "ev_poll.c" |
|
|
649 | #endif |
326 | #if HAVE_SELECT |
650 | #if EV_USE_SELECT |
327 | # include "ev_select.c" |
651 | # include "ev_select.c" |
328 | #endif |
652 | #endif |
329 | |
653 | |
330 | int ev_init (int flags) |
654 | int |
|
|
655 | ev_version_major (void) |
331 | { |
656 | { |
|
|
657 | return EV_VERSION_MAJOR; |
|
|
658 | } |
|
|
659 | |
|
|
660 | int |
|
|
661 | ev_version_minor (void) |
|
|
662 | { |
|
|
663 | return EV_VERSION_MINOR; |
|
|
664 | } |
|
|
665 | |
|
|
666 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
667 | static int |
|
|
668 | enable_secure (void) |
|
|
669 | { |
|
|
670 | #ifdef WIN32 |
|
|
671 | return 0; |
|
|
672 | #else |
|
|
673 | return getuid () != geteuid () |
|
|
674 | || getgid () != getegid (); |
|
|
675 | #endif |
|
|
676 | } |
|
|
677 | |
|
|
678 | int |
|
|
679 | ev_method (EV_P) |
|
|
680 | { |
|
|
681 | return method; |
|
|
682 | } |
|
|
683 | |
|
|
684 | static void |
|
|
685 | loop_init (EV_P_ int methods) |
|
|
686 | { |
|
|
687 | if (!method) |
|
|
688 | { |
332 | #if HAVE_MONOTONIC |
689 | #if EV_USE_MONOTONIC |
333 | { |
690 | { |
334 | struct timespec ts; |
691 | struct timespec ts; |
335 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
692 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
336 | have_monotonic = 1; |
693 | have_monotonic = 1; |
337 | } |
694 | } |
338 | #endif |
695 | #endif |
339 | |
696 | |
340 | ev_now = ev_time (); |
697 | rt_now = ev_time (); |
341 | now = get_clock (); |
698 | mn_now = get_clock (); |
342 | diff = ev_now - now; |
699 | now_floor = mn_now; |
|
|
700 | rtmn_diff = rt_now - mn_now; |
343 | |
701 | |
|
|
702 | if (methods == EVMETHOD_AUTO) |
|
|
703 | if (!enable_secure () && getenv ("LIBEV_METHODS")) |
|
|
704 | methods = atoi (getenv ("LIBEV_METHODS")); |
|
|
705 | else |
|
|
706 | methods = EVMETHOD_ANY; |
|
|
707 | |
|
|
708 | method = 0; |
|
|
709 | #if EV_USE_WIN32 |
|
|
710 | if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); |
|
|
711 | #endif |
|
|
712 | #if EV_USE_KQUEUE |
|
|
713 | if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); |
|
|
714 | #endif |
|
|
715 | #if EV_USE_EPOLL |
|
|
716 | if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); |
|
|
717 | #endif |
|
|
718 | #if EV_USE_POLL |
|
|
719 | if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); |
|
|
720 | #endif |
|
|
721 | #if EV_USE_SELECT |
|
|
722 | if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); |
|
|
723 | #endif |
|
|
724 | |
|
|
725 | ev_watcher_init (&sigev, sigcb); |
|
|
726 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
727 | } |
|
|
728 | } |
|
|
729 | |
|
|
730 | void |
|
|
731 | loop_destroy (EV_P) |
|
|
732 | { |
|
|
733 | int i; |
|
|
734 | |
|
|
735 | #if EV_USE_WIN32 |
|
|
736 | if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); |
|
|
737 | #endif |
|
|
738 | #if EV_USE_KQUEUE |
|
|
739 | if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); |
|
|
740 | #endif |
|
|
741 | #if EV_USE_EPOLL |
|
|
742 | if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); |
|
|
743 | #endif |
|
|
744 | #if EV_USE_POLL |
|
|
745 | if (method == EVMETHOD_POLL ) poll_destroy (EV_A); |
|
|
746 | #endif |
|
|
747 | #if EV_USE_SELECT |
|
|
748 | if (method == EVMETHOD_SELECT) select_destroy (EV_A); |
|
|
749 | #endif |
|
|
750 | |
|
|
751 | for (i = NUMPRI; i--; ) |
|
|
752 | array_free (pending, [i]); |
|
|
753 | |
|
|
754 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
755 | array_free_microshit (fdchange); |
|
|
756 | array_free_microshit (timer); |
|
|
757 | array_free_microshit (periodic); |
|
|
758 | array_free_microshit (idle); |
|
|
759 | array_free_microshit (prepare); |
|
|
760 | array_free_microshit (check); |
|
|
761 | |
|
|
762 | method = 0; |
|
|
763 | } |
|
|
764 | |
|
|
765 | static void |
|
|
766 | loop_fork (EV_P) |
|
|
767 | { |
|
|
768 | #if EV_USE_EPOLL |
|
|
769 | if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); |
|
|
770 | #endif |
|
|
771 | #if EV_USE_KQUEUE |
|
|
772 | if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); |
|
|
773 | #endif |
|
|
774 | |
|
|
775 | if (ev_is_active (&sigev)) |
|
|
776 | { |
|
|
777 | /* default loop */ |
|
|
778 | |
|
|
779 | ev_ref (EV_A); |
|
|
780 | ev_io_stop (EV_A_ &sigev); |
|
|
781 | close (sigpipe [0]); |
|
|
782 | close (sigpipe [1]); |
|
|
783 | |
|
|
784 | while (pipe (sigpipe)) |
|
|
785 | syserr ("(libev) error creating pipe"); |
|
|
786 | |
|
|
787 | siginit (EV_A); |
|
|
788 | } |
|
|
789 | |
|
|
790 | postfork = 0; |
|
|
791 | } |
|
|
792 | |
|
|
793 | #if EV_MULTIPLICITY |
|
|
794 | struct ev_loop * |
|
|
795 | ev_loop_new (int methods) |
|
|
796 | { |
|
|
797 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
798 | |
|
|
799 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
800 | |
|
|
801 | loop_init (EV_A_ methods); |
|
|
802 | |
|
|
803 | if (ev_method (EV_A)) |
|
|
804 | return loop; |
|
|
805 | |
|
|
806 | return 0; |
|
|
807 | } |
|
|
808 | |
|
|
809 | void |
|
|
810 | ev_loop_destroy (EV_P) |
|
|
811 | { |
|
|
812 | loop_destroy (EV_A); |
|
|
813 | ev_free (loop); |
|
|
814 | } |
|
|
815 | |
|
|
816 | void |
|
|
817 | ev_loop_fork (EV_P) |
|
|
818 | { |
|
|
819 | postfork = 1; |
|
|
820 | } |
|
|
821 | |
|
|
822 | #endif |
|
|
823 | |
|
|
824 | #if EV_MULTIPLICITY |
|
|
825 | struct ev_loop default_loop_struct; |
|
|
826 | static struct ev_loop *default_loop; |
|
|
827 | |
|
|
828 | struct ev_loop * |
|
|
829 | #else |
|
|
830 | static int default_loop; |
|
|
831 | |
|
|
832 | int |
|
|
833 | #endif |
|
|
834 | ev_default_loop (int methods) |
|
|
835 | { |
|
|
836 | if (sigpipe [0] == sigpipe [1]) |
344 | if (pipe (sigpipe)) |
837 | if (pipe (sigpipe)) |
345 | return 0; |
838 | return 0; |
346 | |
839 | |
347 | ev_method = EVMETHOD_NONE; |
840 | if (!default_loop) |
348 | #if HAVE_EPOLL |
841 | { |
349 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
842 | #if EV_MULTIPLICITY |
|
|
843 | struct ev_loop *loop = default_loop = &default_loop_struct; |
|
|
844 | #else |
|
|
845 | default_loop = 1; |
350 | #endif |
846 | #endif |
351 | #if HAVE_SELECT |
|
|
352 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
353 | #endif |
|
|
354 | |
847 | |
|
|
848 | loop_init (EV_A_ methods); |
|
|
849 | |
|
|
850 | if (ev_method (EV_A)) |
|
|
851 | { |
|
|
852 | siginit (EV_A); |
|
|
853 | |
|
|
854 | #ifndef WIN32 |
|
|
855 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
856 | ev_set_priority (&childev, EV_MAXPRI); |
|
|
857 | ev_signal_start (EV_A_ &childev); |
|
|
858 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
859 | #endif |
|
|
860 | } |
|
|
861 | else |
|
|
862 | default_loop = 0; |
|
|
863 | } |
|
|
864 | |
|
|
865 | return default_loop; |
|
|
866 | } |
|
|
867 | |
|
|
868 | void |
|
|
869 | ev_default_destroy (void) |
|
|
870 | { |
|
|
871 | #if EV_MULTIPLICITY |
|
|
872 | struct ev_loop *loop = default_loop; |
|
|
873 | #endif |
|
|
874 | |
|
|
875 | #ifndef WIN32 |
|
|
876 | ev_ref (EV_A); /* child watcher */ |
|
|
877 | ev_signal_stop (EV_A_ &childev); |
|
|
878 | #endif |
|
|
879 | |
|
|
880 | ev_ref (EV_A); /* signal watcher */ |
|
|
881 | ev_io_stop (EV_A_ &sigev); |
|
|
882 | |
|
|
883 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
884 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
885 | |
|
|
886 | loop_destroy (EV_A); |
|
|
887 | } |
|
|
888 | |
|
|
889 | void |
|
|
890 | ev_default_fork (void) |
|
|
891 | { |
|
|
892 | #if EV_MULTIPLICITY |
|
|
893 | struct ev_loop *loop = default_loop; |
|
|
894 | #endif |
|
|
895 | |
355 | if (ev_method) |
896 | if (method) |
356 | { |
897 | postfork = 1; |
357 | evw_init (&sigev, sigcb); |
|
|
358 | siginit (); |
|
|
359 | } |
|
|
360 | |
|
|
361 | return ev_method; |
|
|
362 | } |
898 | } |
363 | |
899 | |
364 | /*****************************************************************************/ |
900 | /*****************************************************************************/ |
365 | |
901 | |
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 |
902 | static int |
393 | fd_reify (void) |
903 | any_pending (EV_P) |
394 | { |
904 | { |
395 | int i; |
905 | int pri; |
396 | |
906 | |
397 | for (i = 0; i < fdchangecnt; ++i) |
907 | for (pri = NUMPRI; pri--; ) |
398 | { |
908 | if (pendingcnt [pri]) |
399 | int fd = fdchanges [i]; |
909 | return 1; |
400 | ANFD *anfd = anfds + fd; |
|
|
401 | struct ev_io *w; |
|
|
402 | |
910 | |
403 | int wev = 0; |
911 | return 0; |
404 | |
|
|
405 | for (w = anfd->head; w; w = w->next) |
|
|
406 | wev |= w->events; |
|
|
407 | |
|
|
408 | if (anfd->wev != wev) |
|
|
409 | { |
|
|
410 | method_modify (fd, anfd->wev, wev); |
|
|
411 | anfd->wev = wev; |
|
|
412 | } |
|
|
413 | } |
|
|
414 | |
|
|
415 | fdchangecnt = 0; |
|
|
416 | } |
912 | } |
417 | |
913 | |
418 | static void |
914 | static void |
419 | call_pending () |
915 | call_pending (EV_P) |
420 | { |
916 | { |
421 | int i; |
917 | int pri; |
422 | |
918 | |
423 | for (i = 0; i < pendingcnt; ++i) |
919 | for (pri = NUMPRI; pri--; ) |
|
|
920 | while (pendingcnt [pri]) |
424 | { |
921 | { |
425 | ANPENDING *p = pendings + i; |
922 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
426 | |
923 | |
427 | if (p->w) |
924 | if (p->w) |
428 | { |
925 | { |
429 | p->w->pending = 0; |
926 | p->w->pending = 0; |
430 | p->w->cb (p->w, p->events); |
927 | p->w->cb (EV_A_ p->w, p->events); |
431 | } |
928 | } |
432 | } |
929 | } |
433 | |
|
|
434 | pendingcnt = 0; |
|
|
435 | } |
930 | } |
436 | |
931 | |
437 | static void |
932 | static void |
438 | timers_reify () |
933 | timers_reify (EV_P) |
439 | { |
934 | { |
440 | while (timercnt && timers [0]->at <= now) |
935 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
441 | { |
936 | { |
442 | struct ev_timer *w = timers [0]; |
937 | struct ev_timer *w = timers [0]; |
443 | |
938 | |
444 | event ((W)w, EV_TIMEOUT); |
939 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
445 | |
940 | |
446 | /* first reschedule or stop timer */ |
941 | /* first reschedule or stop timer */ |
447 | if (w->repeat) |
942 | if (w->repeat) |
448 | { |
943 | { |
|
|
944 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
449 | w->at = now + w->repeat; |
945 | ((WT)w)->at = mn_now + w->repeat; |
450 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
|
|
451 | downheap ((WT *)timers, timercnt, 0); |
946 | downheap ((WT *)timers, timercnt, 0); |
452 | } |
947 | } |
453 | else |
948 | else |
454 | evtimer_stop (w); /* nonrepeating: stop timer */ |
949 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
455 | } |
|
|
456 | } |
|
|
457 | |
950 | |
|
|
951 | event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
952 | } |
|
|
953 | } |
|
|
954 | |
458 | static void |
955 | static void |
459 | periodics_reify () |
956 | periodics_reify (EV_P) |
460 | { |
957 | { |
461 | while (periodiccnt && periodics [0]->at <= ev_now) |
958 | while (periodiccnt && ((WT)periodics [0])->at <= rt_now) |
462 | { |
959 | { |
463 | struct ev_periodic *w = periodics [0]; |
960 | struct ev_periodic *w = periodics [0]; |
|
|
961 | |
|
|
962 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
464 | |
963 | |
465 | /* first reschedule or stop timer */ |
964 | /* first reschedule or stop timer */ |
466 | if (w->interval) |
965 | if (w->interval) |
467 | { |
966 | { |
468 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
967 | ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
469 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
968 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); |
470 | downheap ((WT *)periodics, periodiccnt, 0); |
969 | downheap ((WT *)periodics, periodiccnt, 0); |
471 | } |
970 | } |
472 | else |
971 | else |
473 | evperiodic_stop (w); /* nonrepeating: stop timer */ |
972 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
474 | |
973 | |
475 | event ((W)w, EV_TIMEOUT); |
974 | event (EV_A_ (W)w, EV_PERIODIC); |
476 | } |
975 | } |
477 | } |
976 | } |
478 | |
977 | |
479 | static void |
978 | static void |
480 | periodics_reschedule (ev_tstamp diff) |
979 | periodics_reschedule (EV_P) |
481 | { |
980 | { |
482 | int i; |
981 | int i; |
483 | |
982 | |
484 | /* adjust periodics after time jump */ |
983 | /* adjust periodics after time jump */ |
485 | for (i = 0; i < periodiccnt; ++i) |
984 | for (i = 0; i < periodiccnt; ++i) |
486 | { |
985 | { |
487 | struct ev_periodic *w = periodics [i]; |
986 | struct ev_periodic *w = periodics [i]; |
488 | |
987 | |
489 | if (w->interval) |
988 | if (w->interval) |
490 | { |
989 | { |
491 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
990 | ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; |
492 | |
991 | |
493 | if (fabs (diff) >= 1e-4) |
992 | if (fabs (diff) >= 1e-4) |
494 | { |
993 | { |
495 | evperiodic_stop (w); |
994 | ev_periodic_stop (EV_A_ w); |
496 | evperiodic_start (w); |
995 | ev_periodic_start (EV_A_ w); |
497 | |
996 | |
498 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
997 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
499 | } |
998 | } |
500 | } |
999 | } |
501 | } |
1000 | } |
502 | } |
1001 | } |
503 | |
1002 | |
|
|
1003 | inline int |
|
|
1004 | time_update_monotonic (EV_P) |
|
|
1005 | { |
|
|
1006 | mn_now = get_clock (); |
|
|
1007 | |
|
|
1008 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
1009 | { |
|
|
1010 | rt_now = rtmn_diff + mn_now; |
|
|
1011 | return 0; |
|
|
1012 | } |
|
|
1013 | else |
|
|
1014 | { |
|
|
1015 | now_floor = mn_now; |
|
|
1016 | rt_now = ev_time (); |
|
|
1017 | return 1; |
|
|
1018 | } |
|
|
1019 | } |
|
|
1020 | |
504 | static void |
1021 | static void |
505 | time_update () |
1022 | time_update (EV_P) |
506 | { |
1023 | { |
507 | int i; |
1024 | int i; |
508 | |
1025 | |
509 | ev_now = ev_time (); |
1026 | #if EV_USE_MONOTONIC |
510 | |
|
|
511 | if (have_monotonic) |
1027 | if (expect_true (have_monotonic)) |
512 | { |
1028 | { |
513 | ev_tstamp odiff = diff; |
1029 | if (time_update_monotonic (EV_A)) |
514 | |
|
|
515 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
516 | { |
1030 | { |
517 | now = get_clock (); |
1031 | ev_tstamp odiff = rtmn_diff; |
|
|
1032 | |
|
|
1033 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
1034 | { |
518 | diff = ev_now - now; |
1035 | rtmn_diff = rt_now - mn_now; |
519 | |
1036 | |
520 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
1037 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
521 | return; /* all is well */ |
1038 | return; /* all is well */ |
522 | |
1039 | |
523 | ev_now = ev_time (); |
1040 | rt_now = ev_time (); |
|
|
1041 | mn_now = get_clock (); |
|
|
1042 | now_floor = mn_now; |
|
|
1043 | } |
|
|
1044 | |
|
|
1045 | periodics_reschedule (EV_A); |
|
|
1046 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1047 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
524 | } |
1048 | } |
525 | |
|
|
526 | periodics_reschedule (diff - odiff); |
|
|
527 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
528 | } |
1049 | } |
529 | else |
1050 | else |
|
|
1051 | #endif |
530 | { |
1052 | { |
531 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
1053 | rt_now = ev_time (); |
|
|
1054 | |
|
|
1055 | if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
532 | { |
1056 | { |
533 | periodics_reschedule (ev_now - now); |
1057 | periodics_reschedule (EV_A); |
534 | |
1058 | |
535 | /* adjust timers. this is easy, as the offset is the same for all */ |
1059 | /* adjust timers. this is easy, as the offset is the same for all */ |
536 | for (i = 0; i < timercnt; ++i) |
1060 | for (i = 0; i < timercnt; ++i) |
537 | timers [i]->at += diff; |
1061 | ((WT)timers [i])->at += rt_now - mn_now; |
538 | } |
1062 | } |
539 | |
1063 | |
540 | now = ev_now; |
1064 | mn_now = rt_now; |
541 | } |
1065 | } |
542 | } |
1066 | } |
543 | |
1067 | |
544 | int ev_loop_done; |
1068 | void |
|
|
1069 | ev_ref (EV_P) |
|
|
1070 | { |
|
|
1071 | ++activecnt; |
|
|
1072 | } |
545 | |
1073 | |
|
|
1074 | void |
|
|
1075 | ev_unref (EV_P) |
|
|
1076 | { |
|
|
1077 | --activecnt; |
|
|
1078 | } |
|
|
1079 | |
|
|
1080 | static int loop_done; |
|
|
1081 | |
|
|
1082 | void |
546 | void ev_loop (int flags) |
1083 | ev_loop (EV_P_ int flags) |
547 | { |
1084 | { |
548 | double block; |
1085 | double block; |
549 | ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0; |
1086 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
550 | |
|
|
551 | if (checkcnt) |
|
|
552 | { |
|
|
553 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
|
|
554 | call_pending (); |
|
|
555 | } |
|
|
556 | |
1087 | |
557 | do |
1088 | do |
558 | { |
1089 | { |
|
|
1090 | /* queue check watchers (and execute them) */ |
|
|
1091 | if (expect_false (preparecnt)) |
|
|
1092 | { |
|
|
1093 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
|
|
1094 | call_pending (EV_A); |
|
|
1095 | } |
|
|
1096 | |
|
|
1097 | /* we might have forked, so reify kernel state if necessary */ |
|
|
1098 | if (expect_false (postfork)) |
|
|
1099 | loop_fork (EV_A); |
|
|
1100 | |
559 | /* update fd-related kernel structures */ |
1101 | /* update fd-related kernel structures */ |
560 | fd_reify (); |
1102 | fd_reify (EV_A); |
561 | |
1103 | |
562 | /* calculate blocking time */ |
1104 | /* calculate blocking time */ |
563 | |
1105 | |
564 | /* we only need this for !monotonic clock, but as we always have timers, we just calculate it every time */ |
1106 | /* we only need this for !monotonic clock or timers, but as we basically |
|
|
1107 | always have timers, we just calculate it always */ |
|
|
1108 | #if EV_USE_MONOTONIC |
|
|
1109 | if (expect_true (have_monotonic)) |
|
|
1110 | time_update_monotonic (EV_A); |
|
|
1111 | else |
|
|
1112 | #endif |
|
|
1113 | { |
565 | ev_now = ev_time (); |
1114 | rt_now = ev_time (); |
|
|
1115 | mn_now = rt_now; |
|
|
1116 | } |
566 | |
1117 | |
567 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
1118 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
568 | block = 0.; |
1119 | block = 0.; |
569 | else |
1120 | else |
570 | { |
1121 | { |
571 | block = MAX_BLOCKTIME; |
1122 | block = MAX_BLOCKTIME; |
572 | |
1123 | |
573 | if (timercnt) |
1124 | if (timercnt) |
574 | { |
1125 | { |
575 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
1126 | ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; |
576 | if (block > to) block = to; |
1127 | if (block > to) block = to; |
577 | } |
1128 | } |
578 | |
1129 | |
579 | if (periodiccnt) |
1130 | if (periodiccnt) |
580 | { |
1131 | { |
581 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
1132 | ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; |
582 | if (block > to) block = to; |
1133 | if (block > to) block = to; |
583 | } |
1134 | } |
584 | |
1135 | |
585 | if (block < 0.) block = 0.; |
1136 | if (block < 0.) block = 0.; |
586 | } |
1137 | } |
587 | |
1138 | |
588 | method_poll (block); |
1139 | method_poll (EV_A_ block); |
589 | |
1140 | |
590 | /* update ev_now, do magic */ |
1141 | /* update rt_now, do magic */ |
591 | time_update (); |
1142 | time_update (EV_A); |
592 | |
1143 | |
593 | /* queue pending timers and reschedule them */ |
1144 | /* queue pending timers and reschedule them */ |
|
|
1145 | timers_reify (EV_A); /* relative timers called last */ |
594 | periodics_reify (); /* absolute timers first */ |
1146 | periodics_reify (EV_A); /* absolute timers called first */ |
595 | timers_reify (); /* relative timers second */ |
|
|
596 | |
1147 | |
597 | /* queue idle watchers unless io or timers are pending */ |
1148 | /* queue idle watchers unless io or timers are pending */ |
598 | if (!pendingcnt) |
1149 | if (idlecnt && !any_pending (EV_A)) |
599 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
1150 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
600 | |
1151 | |
601 | /* queue check and possibly idle watchers */ |
1152 | /* queue check watchers, to be executed first */ |
|
|
1153 | if (checkcnt) |
602 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1154 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
603 | |
1155 | |
604 | call_pending (); |
1156 | call_pending (EV_A); |
605 | } |
1157 | } |
606 | while (!ev_loop_done); |
1158 | while (activecnt && !loop_done); |
607 | |
1159 | |
608 | if (ev_loop_done != 2) |
1160 | if (loop_done != 2) |
609 | ev_loop_done = 0; |
1161 | loop_done = 0; |
|
|
1162 | } |
|
|
1163 | |
|
|
1164 | void |
|
|
1165 | ev_unloop (EV_P_ int how) |
|
|
1166 | { |
|
|
1167 | loop_done = how; |
610 | } |
1168 | } |
611 | |
1169 | |
612 | /*****************************************************************************/ |
1170 | /*****************************************************************************/ |
613 | |
1171 | |
614 | static void |
1172 | inline void |
615 | wlist_add (WL *head, WL elem) |
1173 | wlist_add (WL *head, WL elem) |
616 | { |
1174 | { |
617 | elem->next = *head; |
1175 | elem->next = *head; |
618 | *head = elem; |
1176 | *head = elem; |
619 | } |
1177 | } |
620 | |
1178 | |
621 | static void |
1179 | inline void |
622 | wlist_del (WL *head, WL elem) |
1180 | wlist_del (WL *head, WL elem) |
623 | { |
1181 | { |
624 | while (*head) |
1182 | while (*head) |
625 | { |
1183 | { |
626 | if (*head == elem) |
1184 | if (*head == elem) |
… | |
… | |
631 | |
1189 | |
632 | head = &(*head)->next; |
1190 | head = &(*head)->next; |
633 | } |
1191 | } |
634 | } |
1192 | } |
635 | |
1193 | |
636 | static void |
1194 | inline void |
637 | ev_clear (W w) |
1195 | ev_clear_pending (EV_P_ W w) |
638 | { |
1196 | { |
639 | if (w->pending) |
1197 | if (w->pending) |
640 | { |
1198 | { |
641 | pendings [w->pending - 1].w = 0; |
1199 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
642 | w->pending = 0; |
1200 | w->pending = 0; |
643 | } |
1201 | } |
644 | } |
1202 | } |
645 | |
1203 | |
646 | static void |
1204 | inline void |
647 | ev_start (W w, int active) |
1205 | ev_start (EV_P_ W w, int active) |
648 | { |
1206 | { |
|
|
1207 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1208 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1209 | |
649 | w->active = active; |
1210 | w->active = active; |
|
|
1211 | ev_ref (EV_A); |
650 | } |
1212 | } |
651 | |
1213 | |
652 | static void |
1214 | inline void |
653 | ev_stop (W w) |
1215 | ev_stop (EV_P_ W w) |
654 | { |
1216 | { |
|
|
1217 | ev_unref (EV_A); |
655 | w->active = 0; |
1218 | w->active = 0; |
656 | } |
1219 | } |
657 | |
1220 | |
658 | /*****************************************************************************/ |
1221 | /*****************************************************************************/ |
659 | |
1222 | |
660 | void |
1223 | void |
661 | evio_start (struct ev_io *w) |
1224 | ev_io_start (EV_P_ struct ev_io *w) |
662 | { |
1225 | { |
|
|
1226 | int fd = w->fd; |
|
|
1227 | |
663 | if (ev_is_active (w)) |
1228 | if (ev_is_active (w)) |
664 | return; |
1229 | return; |
665 | |
1230 | |
666 | int fd = w->fd; |
1231 | assert (("ev_io_start called with negative fd", fd >= 0)); |
667 | |
1232 | |
668 | ev_start ((W)w, 1); |
1233 | ev_start (EV_A_ (W)w, 1); |
669 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1234 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
670 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1235 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
671 | |
1236 | |
672 | ++fdchangecnt; |
1237 | fd_change (EV_A_ fd); |
673 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
674 | fdchanges [fdchangecnt - 1] = fd; |
|
|
675 | } |
1238 | } |
676 | |
1239 | |
677 | void |
1240 | void |
678 | evio_stop (struct ev_io *w) |
1241 | ev_io_stop (EV_P_ struct ev_io *w) |
679 | { |
1242 | { |
680 | ev_clear ((W)w); |
1243 | ev_clear_pending (EV_A_ (W)w); |
681 | if (!ev_is_active (w)) |
1244 | if (!ev_is_active (w)) |
682 | return; |
1245 | return; |
683 | |
1246 | |
684 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1247 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
685 | ev_stop ((W)w); |
1248 | ev_stop (EV_A_ (W)w); |
686 | |
1249 | |
687 | ++fdchangecnt; |
1250 | fd_change (EV_A_ w->fd); |
688 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
689 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
690 | } |
1251 | } |
691 | |
1252 | |
692 | void |
1253 | void |
693 | evtimer_start (struct ev_timer *w) |
1254 | ev_timer_start (EV_P_ struct ev_timer *w) |
694 | { |
1255 | { |
695 | if (ev_is_active (w)) |
1256 | if (ev_is_active (w)) |
696 | return; |
1257 | return; |
697 | |
1258 | |
698 | w->at += now; |
1259 | ((WT)w)->at += mn_now; |
699 | |
1260 | |
700 | assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); |
1261 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
701 | |
1262 | |
702 | ev_start ((W)w, ++timercnt); |
1263 | ev_start (EV_A_ (W)w, ++timercnt); |
703 | array_needsize (timers, timermax, timercnt, ); |
1264 | array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); |
704 | timers [timercnt - 1] = w; |
1265 | timers [timercnt - 1] = w; |
705 | upheap ((WT *)timers, timercnt - 1); |
1266 | upheap ((WT *)timers, timercnt - 1); |
706 | } |
|
|
707 | |
1267 | |
|
|
1268 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1269 | } |
|
|
1270 | |
708 | void |
1271 | void |
709 | evtimer_stop (struct ev_timer *w) |
1272 | ev_timer_stop (EV_P_ struct ev_timer *w) |
710 | { |
1273 | { |
711 | ev_clear ((W)w); |
1274 | ev_clear_pending (EV_A_ (W)w); |
712 | if (!ev_is_active (w)) |
1275 | if (!ev_is_active (w)) |
713 | return; |
1276 | return; |
714 | |
1277 | |
|
|
1278 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1279 | |
715 | if (w->active < timercnt--) |
1280 | if (((W)w)->active < timercnt--) |
716 | { |
1281 | { |
717 | timers [w->active - 1] = timers [timercnt]; |
1282 | timers [((W)w)->active - 1] = timers [timercnt]; |
718 | downheap ((WT *)timers, timercnt, w->active - 1); |
1283 | downheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
719 | } |
1284 | } |
720 | |
1285 | |
721 | w->at = w->repeat; |
1286 | ((WT)w)->at = w->repeat; |
722 | |
1287 | |
723 | ev_stop ((W)w); |
1288 | ev_stop (EV_A_ (W)w); |
724 | } |
1289 | } |
725 | |
1290 | |
726 | void |
1291 | void |
727 | evtimer_again (struct ev_timer *w) |
1292 | ev_timer_again (EV_P_ struct ev_timer *w) |
728 | { |
1293 | { |
729 | if (ev_is_active (w)) |
1294 | if (ev_is_active (w)) |
730 | { |
1295 | { |
731 | if (w->repeat) |
1296 | if (w->repeat) |
732 | { |
1297 | { |
733 | w->at = now + w->repeat; |
1298 | ((WT)w)->at = mn_now + w->repeat; |
734 | downheap ((WT *)timers, timercnt, w->active - 1); |
1299 | downheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
735 | } |
1300 | } |
736 | else |
1301 | else |
737 | evtimer_stop (w); |
1302 | ev_timer_stop (EV_A_ w); |
738 | } |
1303 | } |
739 | else if (w->repeat) |
1304 | else if (w->repeat) |
740 | evtimer_start (w); |
1305 | ev_timer_start (EV_A_ w); |
741 | } |
1306 | } |
742 | |
1307 | |
743 | void |
1308 | void |
744 | evperiodic_start (struct ev_periodic *w) |
1309 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
745 | { |
1310 | { |
746 | if (ev_is_active (w)) |
1311 | if (ev_is_active (w)) |
747 | return; |
1312 | return; |
748 | |
1313 | |
749 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
1314 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
750 | |
1315 | |
751 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1316 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
752 | if (w->interval) |
1317 | if (w->interval) |
753 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
1318 | ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; |
754 | |
1319 | |
755 | ev_start ((W)w, ++periodiccnt); |
1320 | ev_start (EV_A_ (W)w, ++periodiccnt); |
756 | array_needsize (periodics, periodicmax, periodiccnt, ); |
1321 | array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); |
757 | periodics [periodiccnt - 1] = w; |
1322 | periodics [periodiccnt - 1] = w; |
758 | upheap ((WT *)periodics, periodiccnt - 1); |
1323 | upheap ((WT *)periodics, periodiccnt - 1); |
759 | } |
|
|
760 | |
1324 | |
|
|
1325 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1326 | } |
|
|
1327 | |
761 | void |
1328 | void |
762 | evperiodic_stop (struct ev_periodic *w) |
1329 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
763 | { |
1330 | { |
764 | ev_clear ((W)w); |
1331 | ev_clear_pending (EV_A_ (W)w); |
765 | if (!ev_is_active (w)) |
1332 | if (!ev_is_active (w)) |
766 | return; |
1333 | return; |
767 | |
1334 | |
|
|
1335 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1336 | |
768 | if (w->active < periodiccnt--) |
1337 | if (((W)w)->active < periodiccnt--) |
769 | { |
1338 | { |
770 | periodics [w->active - 1] = periodics [periodiccnt]; |
1339 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
771 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
1340 | downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
772 | } |
1341 | } |
773 | |
1342 | |
774 | ev_stop ((W)w); |
1343 | ev_stop (EV_A_ (W)w); |
775 | } |
1344 | } |
776 | |
1345 | |
777 | void |
1346 | void |
778 | evsignal_start (struct ev_signal *w) |
1347 | ev_idle_start (EV_P_ struct ev_idle *w) |
779 | { |
1348 | { |
780 | if (ev_is_active (w)) |
1349 | if (ev_is_active (w)) |
781 | return; |
1350 | return; |
782 | |
1351 | |
|
|
1352 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1353 | array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void)); |
|
|
1354 | idles [idlecnt - 1] = w; |
|
|
1355 | } |
|
|
1356 | |
|
|
1357 | void |
|
|
1358 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1359 | { |
|
|
1360 | ev_clear_pending (EV_A_ (W)w); |
|
|
1361 | if (ev_is_active (w)) |
|
|
1362 | return; |
|
|
1363 | |
|
|
1364 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
|
|
1365 | ev_stop (EV_A_ (W)w); |
|
|
1366 | } |
|
|
1367 | |
|
|
1368 | void |
|
|
1369 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1370 | { |
|
|
1371 | if (ev_is_active (w)) |
|
|
1372 | return; |
|
|
1373 | |
|
|
1374 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1375 | array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void)); |
|
|
1376 | prepares [preparecnt - 1] = w; |
|
|
1377 | } |
|
|
1378 | |
|
|
1379 | void |
|
|
1380 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1381 | { |
|
|
1382 | ev_clear_pending (EV_A_ (W)w); |
|
|
1383 | if (ev_is_active (w)) |
|
|
1384 | return; |
|
|
1385 | |
|
|
1386 | prepares [((W)w)->active - 1] = prepares [--preparecnt]; |
|
|
1387 | ev_stop (EV_A_ (W)w); |
|
|
1388 | } |
|
|
1389 | |
|
|
1390 | void |
|
|
1391 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1392 | { |
|
|
1393 | if (ev_is_active (w)) |
|
|
1394 | return; |
|
|
1395 | |
|
|
1396 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1397 | array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void)); |
|
|
1398 | checks [checkcnt - 1] = w; |
|
|
1399 | } |
|
|
1400 | |
|
|
1401 | void |
|
|
1402 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1403 | { |
|
|
1404 | ev_clear_pending (EV_A_ (W)w); |
|
|
1405 | if (ev_is_active (w)) |
|
|
1406 | return; |
|
|
1407 | |
|
|
1408 | checks [((W)w)->active - 1] = checks [--checkcnt]; |
|
|
1409 | ev_stop (EV_A_ (W)w); |
|
|
1410 | } |
|
|
1411 | |
|
|
1412 | #ifndef SA_RESTART |
|
|
1413 | # define SA_RESTART 0 |
|
|
1414 | #endif |
|
|
1415 | |
|
|
1416 | void |
|
|
1417 | ev_signal_start (EV_P_ struct ev_signal *w) |
|
|
1418 | { |
|
|
1419 | #if EV_MULTIPLICITY |
|
|
1420 | assert (("signal watchers are only supported in the default loop", loop == default_loop)); |
|
|
1421 | #endif |
|
|
1422 | if (ev_is_active (w)) |
|
|
1423 | return; |
|
|
1424 | |
|
|
1425 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1426 | |
783 | ev_start ((W)w, 1); |
1427 | ev_start (EV_A_ (W)w, 1); |
784 | array_needsize (signals, signalmax, w->signum, signals_init); |
1428 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
785 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1429 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
786 | |
1430 | |
787 | if (!w->next) |
1431 | if (!((WL)w)->next) |
788 | { |
1432 | { |
|
|
1433 | #if WIN32 |
|
|
1434 | signal (w->signum, sighandler); |
|
|
1435 | #else |
789 | struct sigaction sa; |
1436 | struct sigaction sa; |
790 | sa.sa_handler = sighandler; |
1437 | sa.sa_handler = sighandler; |
791 | sigfillset (&sa.sa_mask); |
1438 | sigfillset (&sa.sa_mask); |
792 | sa.sa_flags = 0; |
1439 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
793 | sigaction (w->signum, &sa, 0); |
1440 | sigaction (w->signum, &sa, 0); |
|
|
1441 | #endif |
794 | } |
1442 | } |
795 | } |
1443 | } |
796 | |
1444 | |
797 | void |
1445 | void |
798 | evsignal_stop (struct ev_signal *w) |
1446 | ev_signal_stop (EV_P_ struct ev_signal *w) |
799 | { |
1447 | { |
800 | ev_clear ((W)w); |
1448 | ev_clear_pending (EV_A_ (W)w); |
801 | if (!ev_is_active (w)) |
1449 | if (!ev_is_active (w)) |
802 | return; |
1450 | return; |
803 | |
1451 | |
804 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1452 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
805 | ev_stop ((W)w); |
1453 | ev_stop (EV_A_ (W)w); |
806 | |
1454 | |
807 | if (!signals [w->signum - 1].head) |
1455 | if (!signals [w->signum - 1].head) |
808 | signal (w->signum, SIG_DFL); |
1456 | signal (w->signum, SIG_DFL); |
809 | } |
1457 | } |
810 | |
1458 | |
811 | void evidle_start (struct ev_idle *w) |
1459 | void |
|
|
1460 | ev_child_start (EV_P_ struct ev_child *w) |
812 | { |
1461 | { |
|
|
1462 | #if EV_MULTIPLICITY |
|
|
1463 | assert (("child watchers are only supported in the default loop", loop == default_loop)); |
|
|
1464 | #endif |
813 | if (ev_is_active (w)) |
1465 | if (ev_is_active (w)) |
814 | return; |
1466 | return; |
815 | |
1467 | |
816 | ev_start ((W)w, ++idlecnt); |
1468 | ev_start (EV_A_ (W)w, 1); |
817 | array_needsize (idles, idlemax, idlecnt, ); |
1469 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
818 | idles [idlecnt - 1] = w; |
|
|
819 | } |
1470 | } |
820 | |
1471 | |
821 | void evidle_stop (struct ev_idle *w) |
1472 | void |
|
|
1473 | ev_child_stop (EV_P_ struct ev_child *w) |
822 | { |
1474 | { |
823 | ev_clear ((W)w); |
1475 | ev_clear_pending (EV_A_ (W)w); |
824 | if (ev_is_active (w)) |
1476 | if (ev_is_active (w)) |
825 | return; |
1477 | return; |
826 | |
1478 | |
827 | idles [w->active - 1] = idles [--idlecnt]; |
1479 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
828 | ev_stop ((W)w); |
1480 | ev_stop (EV_A_ (W)w); |
829 | } |
|
|
830 | |
|
|
831 | void evcheck_start (struct ev_check *w) |
|
|
832 | { |
|
|
833 | if (ev_is_active (w)) |
|
|
834 | return; |
|
|
835 | |
|
|
836 | ev_start ((W)w, ++checkcnt); |
|
|
837 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
838 | checks [checkcnt - 1] = w; |
|
|
839 | } |
|
|
840 | |
|
|
841 | void evcheck_stop (struct ev_check *w) |
|
|
842 | { |
|
|
843 | ev_clear ((W)w); |
|
|
844 | if (ev_is_active (w)) |
|
|
845 | return; |
|
|
846 | |
|
|
847 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
848 | ev_stop ((W)w); |
|
|
849 | } |
1481 | } |
850 | |
1482 | |
851 | /*****************************************************************************/ |
1483 | /*****************************************************************************/ |
852 | |
1484 | |
853 | struct ev_once |
1485 | struct ev_once |
… | |
… | |
857 | void (*cb)(int revents, void *arg); |
1489 | void (*cb)(int revents, void *arg); |
858 | void *arg; |
1490 | void *arg; |
859 | }; |
1491 | }; |
860 | |
1492 | |
861 | static void |
1493 | static void |
862 | once_cb (struct ev_once *once, int revents) |
1494 | once_cb (EV_P_ struct ev_once *once, int revents) |
863 | { |
1495 | { |
864 | void (*cb)(int revents, void *arg) = once->cb; |
1496 | void (*cb)(int revents, void *arg) = once->cb; |
865 | void *arg = once->arg; |
1497 | void *arg = once->arg; |
866 | |
1498 | |
867 | evio_stop (&once->io); |
1499 | ev_io_stop (EV_A_ &once->io); |
868 | evtimer_stop (&once->to); |
1500 | ev_timer_stop (EV_A_ &once->to); |
869 | free (once); |
1501 | ev_free (once); |
870 | |
1502 | |
871 | cb (revents, arg); |
1503 | cb (revents, arg); |
872 | } |
1504 | } |
873 | |
1505 | |
874 | static void |
1506 | static void |
875 | once_cb_io (struct ev_io *w, int revents) |
1507 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
876 | { |
1508 | { |
877 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1509 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
878 | } |
1510 | } |
879 | |
1511 | |
880 | static void |
1512 | static void |
881 | once_cb_to (struct ev_timer *w, int revents) |
1513 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
882 | { |
1514 | { |
883 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1515 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
884 | } |
1516 | } |
885 | |
1517 | |
886 | void |
1518 | void |
887 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1519 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
888 | { |
1520 | { |
889 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
1521 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
890 | |
1522 | |
891 | if (!once) |
1523 | if (!once) |
892 | cb (EV_ERROR, arg); |
1524 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
893 | else |
1525 | else |
894 | { |
1526 | { |
895 | once->cb = cb; |
1527 | once->cb = cb; |
896 | once->arg = arg; |
1528 | once->arg = arg; |
897 | |
1529 | |
898 | evw_init (&once->io, once_cb_io); |
1530 | ev_watcher_init (&once->io, once_cb_io); |
899 | |
|
|
900 | if (fd >= 0) |
1531 | if (fd >= 0) |
901 | { |
1532 | { |
902 | evio_set (&once->io, fd, events); |
1533 | ev_io_set (&once->io, fd, events); |
903 | evio_start (&once->io); |
1534 | ev_io_start (EV_A_ &once->io); |
904 | } |
1535 | } |
905 | |
1536 | |
906 | evw_init (&once->to, once_cb_to); |
1537 | ev_watcher_init (&once->to, once_cb_to); |
907 | |
|
|
908 | if (timeout >= 0.) |
1538 | if (timeout >= 0.) |
909 | { |
1539 | { |
910 | evtimer_set (&once->to, timeout, 0.); |
1540 | ev_timer_set (&once->to, timeout, 0.); |
911 | evtimer_start (&once->to); |
1541 | ev_timer_start (EV_A_ &once->to); |
912 | } |
1542 | } |
913 | } |
1543 | } |
914 | } |
1544 | } |
915 | |
1545 | |
916 | /*****************************************************************************/ |
|
|
917 | |
|
|
918 | #if 0 |
|
|
919 | |
|
|
920 | struct ev_io wio; |
|
|
921 | |
|
|
922 | static void |
|
|
923 | sin_cb (struct ev_io *w, int revents) |
|
|
924 | { |
|
|
925 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
926 | } |
|
|
927 | |
|
|
928 | static void |
|
|
929 | ocb (struct ev_timer *w, int revents) |
|
|
930 | { |
|
|
931 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
932 | evtimer_stop (w); |
|
|
933 | evtimer_start (w); |
|
|
934 | } |
|
|
935 | |
|
|
936 | static void |
|
|
937 | scb (struct ev_signal *w, int revents) |
|
|
938 | { |
|
|
939 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
940 | evio_stop (&wio); |
|
|
941 | evio_start (&wio); |
|
|
942 | } |
|
|
943 | |
|
|
944 | static void |
|
|
945 | gcb (struct ev_signal *w, int revents) |
|
|
946 | { |
|
|
947 | fprintf (stderr, "generic %x\n", revents); |
|
|
948 | |
|
|
949 | } |
|
|
950 | |
|
|
951 | int main (void) |
|
|
952 | { |
|
|
953 | ev_init (0); |
|
|
954 | |
|
|
955 | evio_init (&wio, sin_cb, 0, EV_READ); |
|
|
956 | evio_start (&wio); |
|
|
957 | |
|
|
958 | struct ev_timer t[10000]; |
|
|
959 | |
|
|
960 | #if 0 |
|
|
961 | int i; |
|
|
962 | for (i = 0; i < 10000; ++i) |
|
|
963 | { |
|
|
964 | struct ev_timer *w = t + i; |
|
|
965 | evw_init (w, ocb, i); |
|
|
966 | evtimer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
967 | evtimer_start (w); |
|
|
968 | if (drand48 () < 0.5) |
|
|
969 | evtimer_stop (w); |
|
|
970 | } |
|
|
971 | #endif |
|
|
972 | |
|
|
973 | struct ev_timer t1; |
|
|
974 | evtimer_init (&t1, ocb, 5, 10); |
|
|
975 | evtimer_start (&t1); |
|
|
976 | |
|
|
977 | struct ev_signal sig; |
|
|
978 | evsignal_init (&sig, scb, SIGQUIT); |
|
|
979 | evsignal_start (&sig); |
|
|
980 | |
|
|
981 | struct ev_check cw; |
|
|
982 | evcheck_init (&cw, gcb); |
|
|
983 | evcheck_start (&cw); |
|
|
984 | |
|
|
985 | struct ev_idle iw; |
|
|
986 | evidle_init (&iw, gcb); |
|
|
987 | evidle_start (&iw); |
|
|
988 | |
|
|
989 | ev_loop (0); |
|
|
990 | |
|
|
991 | return 0; |
|
|
992 | } |
|
|
993 | |
|
|
994 | #endif |
|
|
995 | |
|
|
996 | |
|
|
997 | |
|
|
998 | |
|
|