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/types.h> |
66 | #include <sys/types.h> |
42 | #include <sys/wait.h> |
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43 | #include <sys/time.h> |
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44 | #include <time.h> |
67 | #include <time.h> |
45 | |
68 | |
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69 | #include <signal.h> |
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70 | |
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71 | #ifndef WIN32 |
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72 | # include <unistd.h> |
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73 | # include <sys/time.h> |
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74 | # include <sys/wait.h> |
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75 | #endif |
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76 | /**/ |
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77 | |
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) */ |
66 | #define PID_HASHSIZE 16 /* size of pid hahs table, must be power of two */ |
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 */ |
67 | |
130 | |
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131 | #ifdef EV_H |
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132 | # include EV_H |
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133 | #else |
68 | #include "ev.h" |
134 | # include "ev.h" |
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135 | #endif |
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136 | |
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137 | #if __GNUC__ >= 3 |
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138 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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139 | # define inline inline |
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140 | #else |
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141 | # define expect(expr,value) (expr) |
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142 | # define inline static |
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143 | #endif |
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144 | |
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145 | #define expect_false(expr) expect ((expr) != 0, 0) |
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146 | #define expect_true(expr) expect ((expr) != 0, 1) |
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147 | |
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148 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
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149 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
69 | |
150 | |
70 | typedef struct ev_watcher *W; |
151 | typedef struct ev_watcher *W; |
71 | typedef struct ev_watcher_list *WL; |
152 | typedef struct ev_watcher_list *WL; |
72 | typedef struct ev_watcher_time *WT; |
153 | typedef struct ev_watcher_time *WT; |
73 | |
154 | |
74 | static ev_tstamp now, diff; /* monotonic clock */ |
155 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
75 | ev_tstamp ev_now; |
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76 | int ev_method; |
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77 | |
156 | |
78 | static int have_monotonic; /* runtime */ |
157 | #include "ev_win32.c" |
79 | |
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80 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
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81 | static void (*method_modify)(int fd, int oev, int nev); |
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82 | static void (*method_poll)(ev_tstamp timeout); |
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83 | |
158 | |
84 | /*****************************************************************************/ |
159 | /*****************************************************************************/ |
85 | |
160 | |
86 | ev_tstamp |
161 | static void (*syserr_cb)(const char *msg); |
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162 | |
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163 | void ev_set_syserr_cb (void (*cb)(const char *msg)) |
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164 | { |
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165 | syserr_cb = cb; |
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166 | } |
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167 | |
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168 | static void |
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169 | syserr (const char *msg) |
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170 | { |
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171 | if (!msg) |
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172 | msg = "(libev) system error"; |
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173 | |
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174 | if (syserr_cb) |
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175 | syserr_cb (msg); |
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176 | else |
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177 | { |
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178 | perror (msg); |
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179 | abort (); |
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180 | } |
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181 | } |
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182 | |
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183 | static void *(*alloc)(void *ptr, long size); |
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184 | |
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185 | void ev_set_allocator (void *(*cb)(void *ptr, long size)) |
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186 | { |
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187 | alloc = cb; |
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188 | } |
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189 | |
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190 | static void * |
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191 | ev_realloc (void *ptr, long size) |
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192 | { |
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193 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
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194 | |
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195 | if (!ptr && size) |
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196 | { |
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197 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
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198 | abort (); |
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199 | } |
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200 | |
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201 | return ptr; |
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202 | } |
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203 | |
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204 | #define ev_malloc(size) ev_realloc (0, (size)) |
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205 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
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206 | |
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207 | /*****************************************************************************/ |
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208 | |
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209 | typedef struct |
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210 | { |
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211 | WL head; |
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212 | unsigned char events; |
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213 | unsigned char reify; |
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214 | } ANFD; |
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215 | |
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216 | typedef struct |
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217 | { |
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218 | W w; |
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219 | int events; |
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220 | } ANPENDING; |
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221 | |
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222 | #if EV_MULTIPLICITY |
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223 | |
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224 | struct ev_loop |
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225 | { |
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226 | #define VAR(name,decl) decl; |
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227 | #include "ev_vars.h" |
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228 | #undef VAR |
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229 | }; |
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230 | #include "ev_wrap.h" |
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231 | |
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232 | struct ev_loop default_loop_struct; |
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233 | static struct ev_loop *default_loop; |
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234 | |
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235 | #else |
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236 | |
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237 | #define VAR(name,decl) static decl; |
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238 | #include "ev_vars.h" |
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239 | #undef VAR |
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240 | |
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241 | static int default_loop; |
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242 | |
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243 | #endif |
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244 | |
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245 | /*****************************************************************************/ |
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246 | |
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247 | inline ev_tstamp |
87 | ev_time (void) |
248 | ev_time (void) |
88 | { |
249 | { |
89 | #if HAVE_REALTIME |
250 | #if EV_USE_REALTIME |
90 | struct timespec ts; |
251 | struct timespec ts; |
91 | clock_gettime (CLOCK_REALTIME, &ts); |
252 | clock_gettime (CLOCK_REALTIME, &ts); |
92 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
253 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
93 | #else |
254 | #else |
94 | struct timeval tv; |
255 | struct timeval tv; |
95 | gettimeofday (&tv, 0); |
256 | gettimeofday (&tv, 0); |
96 | return tv.tv_sec + tv.tv_usec * 1e-6; |
257 | return tv.tv_sec + tv.tv_usec * 1e-6; |
97 | #endif |
258 | #endif |
98 | } |
259 | } |
99 | |
260 | |
100 | static ev_tstamp |
261 | inline ev_tstamp |
101 | get_clock (void) |
262 | get_clock (void) |
102 | { |
263 | { |
103 | #if HAVE_MONOTONIC |
264 | #if EV_USE_MONOTONIC |
104 | if (have_monotonic) |
265 | if (expect_true (have_monotonic)) |
105 | { |
266 | { |
106 | struct timespec ts; |
267 | struct timespec ts; |
107 | clock_gettime (CLOCK_MONOTONIC, &ts); |
268 | clock_gettime (CLOCK_MONOTONIC, &ts); |
108 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
269 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
109 | } |
270 | } |
110 | #endif |
271 | #endif |
111 | |
272 | |
112 | return ev_time (); |
273 | return ev_time (); |
113 | } |
274 | } |
114 | |
275 | |
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276 | ev_tstamp |
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277 | ev_now (EV_P) |
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278 | { |
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279 | return rt_now; |
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280 | } |
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281 | |
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282 | #define array_roundsize(type,n) ((n) | 4 & ~3) |
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283 | |
115 | #define array_needsize(base,cur,cnt,init) \ |
284 | #define array_needsize(type,base,cur,cnt,init) \ |
116 | if ((cnt) > cur) \ |
285 | if (expect_false ((cnt) > cur)) \ |
117 | { \ |
286 | { \ |
118 | int newcnt = cur; \ |
287 | int newcnt = cur; \ |
119 | do \ |
288 | do \ |
120 | { \ |
289 | { \ |
121 | newcnt = (newcnt << 1) | 4 & ~3; \ |
290 | newcnt = array_roundsize (type, newcnt << 1); \ |
122 | } \ |
291 | } \ |
123 | while ((cnt) > newcnt); \ |
292 | while ((cnt) > newcnt); \ |
124 | \ |
293 | \ |
125 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
294 | base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\ |
126 | init (base + cur, newcnt - cur); \ |
295 | init (base + cur, newcnt - cur); \ |
127 | cur = newcnt; \ |
296 | cur = newcnt; \ |
128 | } |
297 | } |
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298 | |
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299 | #define array_slim(type,stem) \ |
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300 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
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301 | { \ |
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302 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
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303 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
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304 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
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305 | } |
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306 | |
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307 | /* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */ |
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308 | /* bringing us everlasting joy in form of stupid extra macros that are not required in C */ |
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309 | #define array_free_microshit(stem) \ |
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310 | ev_free (stem ## s); stem ## cnt = stem ## max = 0; |
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311 | |
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312 | #define array_free(stem, idx) \ |
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313 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
129 | |
314 | |
130 | /*****************************************************************************/ |
315 | /*****************************************************************************/ |
131 | |
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132 | typedef struct |
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133 | { |
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134 | struct ev_io *head; |
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135 | int events; |
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136 | } ANFD; |
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137 | |
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138 | static ANFD *anfds; |
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139 | static int anfdmax; |
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140 | |
316 | |
141 | static void |
317 | static void |
142 | anfds_init (ANFD *base, int count) |
318 | anfds_init (ANFD *base, int count) |
143 | { |
319 | { |
144 | while (count--) |
320 | while (count--) |
145 | { |
321 | { |
146 | base->head = 0; |
322 | base->head = 0; |
147 | base->events = EV_NONE; |
323 | base->events = EV_NONE; |
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324 | base->reify = 0; |
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325 | |
148 | ++base; |
326 | ++base; |
149 | } |
327 | } |
150 | } |
328 | } |
151 | |
329 | |
152 | typedef struct |
330 | void |
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331 | ev_feed_event (EV_P_ void *w, int revents) |
153 | { |
332 | { |
154 | W w; |
333 | W w_ = (W)w; |
155 | int events; |
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156 | } ANPENDING; |
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157 | |
334 | |
158 | static ANPENDING *pendings; |
335 | if (w_->pending) |
159 | static int pendingmax, pendingcnt; |
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160 | |
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161 | static void |
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162 | event (W w, int events) |
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163 | { |
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164 | if (w->active) |
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165 | { |
336 | { |
166 | w->pending = ++pendingcnt; |
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167 | array_needsize (pendings, pendingmax, pendingcnt, ); |
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168 | pendings [pendingcnt - 1].w = w; |
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169 | pendings [pendingcnt - 1].events = events; |
337 | pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; |
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338 | return; |
170 | } |
339 | } |
171 | } |
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172 | |
340 | |
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341 | w_->pending = ++pendingcnt [ABSPRI (w_)]; |
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342 | array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void)); |
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343 | pendings [ABSPRI (w_)][w_->pending - 1].w = w_; |
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344 | pendings [ABSPRI (w_)][w_->pending - 1].events = revents; |
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345 | } |
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346 | |
173 | static void |
347 | static void |
174 | queue_events (W *events, int eventcnt, int type) |
348 | queue_events (EV_P_ W *events, int eventcnt, int type) |
175 | { |
349 | { |
176 | int i; |
350 | int i; |
177 | |
351 | |
178 | for (i = 0; i < eventcnt; ++i) |
352 | for (i = 0; i < eventcnt; ++i) |
179 | event (events [i], type); |
353 | ev_feed_event (EV_A_ events [i], type); |
180 | } |
354 | } |
181 | |
355 | |
182 | static void |
356 | inline void |
183 | fd_event (int fd, int events) |
357 | fd_event (EV_P_ int fd, int revents) |
184 | { |
358 | { |
185 | ANFD *anfd = anfds + fd; |
359 | ANFD *anfd = anfds + fd; |
186 | struct ev_io *w; |
360 | struct ev_io *w; |
187 | |
361 | |
188 | for (w = anfd->head; w; w = w->next) |
362 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
189 | { |
363 | { |
190 | int ev = w->events & events; |
364 | int ev = w->events & revents; |
191 | |
365 | |
192 | if (ev) |
366 | if (ev) |
193 | event ((W)w, ev); |
367 | ev_feed_event (EV_A_ (W)w, ev); |
194 | } |
368 | } |
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369 | } |
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370 | |
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371 | void |
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372 | ev_feed_fd_event (EV_P_ int fd, int revents) |
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373 | { |
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374 | fd_event (EV_A_ fd, revents); |
195 | } |
375 | } |
196 | |
376 | |
197 | /*****************************************************************************/ |
377 | /*****************************************************************************/ |
198 | |
378 | |
199 | static int *fdchanges; |
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200 | static int fdchangemax, fdchangecnt; |
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201 | |
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202 | static void |
379 | static void |
203 | fd_reify (void) |
380 | fd_reify (EV_P) |
204 | { |
381 | { |
205 | int i; |
382 | int i; |
206 | |
383 | |
207 | for (i = 0; i < fdchangecnt; ++i) |
384 | for (i = 0; i < fdchangecnt; ++i) |
208 | { |
385 | { |
… | |
… | |
210 | ANFD *anfd = anfds + fd; |
387 | ANFD *anfd = anfds + fd; |
211 | struct ev_io *w; |
388 | struct ev_io *w; |
212 | |
389 | |
213 | int events = 0; |
390 | int events = 0; |
214 | |
391 | |
215 | for (w = anfd->head; w; w = w->next) |
392 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
216 | events |= w->events; |
393 | events |= w->events; |
217 | |
394 | |
218 | anfd->events &= ~EV_REIFY; |
395 | anfd->reify = 0; |
219 | |
396 | |
220 | if (anfd->events != events) |
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221 | { |
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222 | method_modify (fd, anfd->events, events); |
397 | method_modify (EV_A_ fd, anfd->events, events); |
223 | anfd->events = events; |
398 | anfd->events = events; |
224 | } |
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225 | } |
399 | } |
226 | |
400 | |
227 | fdchangecnt = 0; |
401 | fdchangecnt = 0; |
228 | } |
402 | } |
229 | |
403 | |
230 | static void |
404 | static void |
231 | fd_change (int fd) |
405 | fd_change (EV_P_ int fd) |
232 | { |
406 | { |
233 | if (anfds [fd].events & EV_REIFY) |
407 | if (anfds [fd].reify) |
234 | return; |
408 | return; |
235 | |
409 | |
236 | anfds [fd].events |= EV_REIFY; |
410 | anfds [fd].reify = 1; |
237 | |
411 | |
238 | ++fdchangecnt; |
412 | ++fdchangecnt; |
239 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
413 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); |
240 | fdchanges [fdchangecnt - 1] = fd; |
414 | fdchanges [fdchangecnt - 1] = fd; |
241 | } |
415 | } |
242 | |
416 | |
|
|
417 | static void |
|
|
418 | fd_kill (EV_P_ int fd) |
|
|
419 | { |
|
|
420 | struct ev_io *w; |
|
|
421 | |
|
|
422 | while ((w = (struct ev_io *)anfds [fd].head)) |
|
|
423 | { |
|
|
424 | ev_io_stop (EV_A_ w); |
|
|
425 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
426 | } |
|
|
427 | } |
|
|
428 | |
|
|
429 | static int |
|
|
430 | fd_valid (int fd) |
|
|
431 | { |
|
|
432 | #ifdef WIN32 |
|
|
433 | return !!win32_get_osfhandle (fd); |
|
|
434 | #else |
|
|
435 | return fcntl (fd, F_GETFD) != -1; |
|
|
436 | #endif |
|
|
437 | } |
|
|
438 | |
243 | /* called on EBADF to verify fds */ |
439 | /* called on EBADF to verify fds */ |
244 | static void |
440 | static void |
245 | fd_recheck (void) |
441 | fd_ebadf (EV_P) |
246 | { |
442 | { |
247 | int fd; |
443 | int fd; |
248 | |
444 | |
249 | for (fd = 0; fd < anfdmax; ++fd) |
445 | for (fd = 0; fd < anfdmax; ++fd) |
250 | if (anfds [fd].events) |
446 | if (anfds [fd].events) |
251 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
447 | if (!fd_valid (fd) == -1 && errno == EBADF) |
252 | while (anfds [fd].head) |
448 | fd_kill (EV_A_ fd); |
|
|
449 | } |
|
|
450 | |
|
|
451 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
452 | static void |
|
|
453 | fd_enomem (EV_P) |
|
|
454 | { |
|
|
455 | int fd; |
|
|
456 | |
|
|
457 | for (fd = anfdmax; fd--; ) |
|
|
458 | if (anfds [fd].events) |
253 | { |
459 | { |
254 | event ((W)anfds [fd].head, EV_ERROR); |
460 | fd_kill (EV_A_ fd); |
255 | ev_io_stop (anfds [fd].head); |
461 | return; |
256 | } |
462 | } |
|
|
463 | } |
|
|
464 | |
|
|
465 | /* usually called after fork if method needs to re-arm all fds from scratch */ |
|
|
466 | static void |
|
|
467 | fd_rearm_all (EV_P) |
|
|
468 | { |
|
|
469 | int fd; |
|
|
470 | |
|
|
471 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
472 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
473 | if (anfds [fd].events) |
|
|
474 | { |
|
|
475 | anfds [fd].events = 0; |
|
|
476 | fd_change (EV_A_ fd); |
|
|
477 | } |
257 | } |
478 | } |
258 | |
479 | |
259 | /*****************************************************************************/ |
480 | /*****************************************************************************/ |
260 | |
481 | |
261 | static struct ev_timer **timers; |
|
|
262 | static int timermax, timercnt; |
|
|
263 | |
|
|
264 | static struct ev_periodic **periodics; |
|
|
265 | static int periodicmax, periodiccnt; |
|
|
266 | |
|
|
267 | static void |
482 | static void |
268 | upheap (WT *timers, int k) |
483 | upheap (WT *heap, int k) |
269 | { |
484 | { |
270 | WT w = timers [k]; |
485 | WT w = heap [k]; |
271 | |
486 | |
272 | while (k && timers [k >> 1]->at > w->at) |
487 | while (k && heap [k >> 1]->at > w->at) |
273 | { |
488 | { |
274 | timers [k] = timers [k >> 1]; |
489 | heap [k] = heap [k >> 1]; |
275 | timers [k]->active = k + 1; |
490 | ((W)heap [k])->active = k + 1; |
276 | k >>= 1; |
491 | k >>= 1; |
277 | } |
492 | } |
278 | |
493 | |
279 | timers [k] = w; |
494 | heap [k] = w; |
280 | timers [k]->active = k + 1; |
495 | ((W)heap [k])->active = k + 1; |
281 | |
496 | |
282 | } |
497 | } |
283 | |
498 | |
284 | static void |
499 | static void |
285 | downheap (WT *timers, int N, int k) |
500 | downheap (WT *heap, int N, int k) |
286 | { |
501 | { |
287 | WT w = timers [k]; |
502 | WT w = heap [k]; |
288 | |
503 | |
289 | while (k < (N >> 1)) |
504 | while (k < (N >> 1)) |
290 | { |
505 | { |
291 | int j = k << 1; |
506 | int j = k << 1; |
292 | |
507 | |
293 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
508 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
294 | ++j; |
509 | ++j; |
295 | |
510 | |
296 | if (w->at <= timers [j]->at) |
511 | if (w->at <= heap [j]->at) |
297 | break; |
512 | break; |
298 | |
513 | |
299 | timers [k] = timers [j]; |
514 | heap [k] = heap [j]; |
300 | timers [k]->active = k + 1; |
515 | ((W)heap [k])->active = k + 1; |
301 | k = j; |
516 | k = j; |
302 | } |
517 | } |
303 | |
518 | |
304 | timers [k] = w; |
519 | heap [k] = w; |
305 | timers [k]->active = k + 1; |
520 | ((W)heap [k])->active = k + 1; |
306 | } |
521 | } |
307 | |
522 | |
308 | /*****************************************************************************/ |
523 | /*****************************************************************************/ |
309 | |
524 | |
310 | typedef struct |
525 | typedef struct |
311 | { |
526 | { |
312 | struct ev_signal *head; |
527 | WL head; |
313 | sig_atomic_t gotsig; |
528 | sig_atomic_t volatile gotsig; |
314 | } ANSIG; |
529 | } ANSIG; |
315 | |
530 | |
316 | static ANSIG *signals; |
531 | static ANSIG *signals; |
317 | static int signalmax; |
532 | static int signalmax; |
318 | |
533 | |
319 | static int sigpipe [2]; |
534 | static int sigpipe [2]; |
320 | static sig_atomic_t gotsig; |
535 | static sig_atomic_t volatile gotsig; |
321 | static struct ev_io sigev; |
536 | static struct ev_io sigev; |
322 | |
537 | |
323 | static void |
538 | static void |
324 | signals_init (ANSIG *base, int count) |
539 | signals_init (ANSIG *base, int count) |
325 | { |
540 | { |
326 | while (count--) |
541 | while (count--) |
327 | { |
542 | { |
328 | base->head = 0; |
543 | base->head = 0; |
329 | base->gotsig = 0; |
544 | base->gotsig = 0; |
|
|
545 | |
330 | ++base; |
546 | ++base; |
331 | } |
547 | } |
332 | } |
548 | } |
333 | |
549 | |
334 | static void |
550 | static void |
335 | sighandler (int signum) |
551 | sighandler (int signum) |
336 | { |
552 | { |
|
|
553 | #if WIN32 |
|
|
554 | signal (signum, sighandler); |
|
|
555 | #endif |
|
|
556 | |
337 | signals [signum - 1].gotsig = 1; |
557 | signals [signum - 1].gotsig = 1; |
338 | |
558 | |
339 | if (!gotsig) |
559 | if (!gotsig) |
340 | { |
560 | { |
|
|
561 | int old_errno = errno; |
341 | gotsig = 1; |
562 | gotsig = 1; |
|
|
563 | #ifdef WIN32 |
|
|
564 | send (sigpipe [1], &signum, 1, MSG_DONTWAIT); |
|
|
565 | #else |
342 | write (sigpipe [1], &gotsig, 1); |
566 | write (sigpipe [1], &signum, 1); |
|
|
567 | #endif |
|
|
568 | errno = old_errno; |
343 | } |
569 | } |
344 | } |
570 | } |
345 | |
571 | |
|
|
572 | void |
|
|
573 | ev_feed_signal_event (EV_P_ int signum) |
|
|
574 | { |
|
|
575 | WL w; |
|
|
576 | |
|
|
577 | #if EV_MULTIPLICITY |
|
|
578 | assert (("feeding signal events is only supported in the default loop", loop == default_loop)); |
|
|
579 | #endif |
|
|
580 | |
|
|
581 | --signum; |
|
|
582 | |
|
|
583 | if (signum < 0 || signum >= signalmax) |
|
|
584 | return; |
|
|
585 | |
|
|
586 | signals [signum].gotsig = 0; |
|
|
587 | |
|
|
588 | for (w = signals [signum].head; w; w = w->next) |
|
|
589 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
590 | } |
|
|
591 | |
346 | static void |
592 | static void |
347 | sigcb (struct ev_io *iow, int revents) |
593 | sigcb (EV_P_ struct ev_io *iow, int revents) |
348 | { |
594 | { |
349 | struct ev_signal *w; |
|
|
350 | int sig; |
595 | int signum; |
351 | |
596 | |
|
|
597 | #ifdef WIN32 |
|
|
598 | recv (sigpipe [0], &revents, 1, MSG_DONTWAIT); |
|
|
599 | #else |
|
|
600 | read (sigpipe [0], &revents, 1); |
|
|
601 | #endif |
352 | gotsig = 0; |
602 | gotsig = 0; |
353 | read (sigpipe [0], &revents, 1); |
|
|
354 | |
603 | |
355 | for (sig = signalmax; sig--; ) |
604 | for (signum = signalmax; signum--; ) |
356 | if (signals [sig].gotsig) |
605 | if (signals [signum].gotsig) |
357 | { |
606 | ev_feed_signal_event (EV_A_ signum + 1); |
358 | signals [sig].gotsig = 0; |
|
|
359 | |
|
|
360 | for (w = signals [sig].head; w; w = w->next) |
|
|
361 | event ((W)w, EV_SIGNAL); |
|
|
362 | } |
|
|
363 | } |
607 | } |
364 | |
608 | |
365 | static void |
609 | static void |
366 | siginit (void) |
610 | siginit (EV_P) |
367 | { |
611 | { |
|
|
612 | #ifndef WIN32 |
368 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
613 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
369 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
614 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
370 | |
615 | |
371 | /* rather than sort out wether we really need nb, set it */ |
616 | /* rather than sort out wether we really need nb, set it */ |
372 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
617 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
373 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
618 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
619 | #endif |
374 | |
620 | |
375 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
621 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
376 | ev_io_start (&sigev); |
622 | ev_io_start (EV_A_ &sigev); |
|
|
623 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
377 | } |
624 | } |
378 | |
625 | |
379 | /*****************************************************************************/ |
626 | /*****************************************************************************/ |
380 | |
627 | |
381 | static struct ev_idle **idles; |
|
|
382 | static int idlemax, idlecnt; |
|
|
383 | |
|
|
384 | static struct ev_prepare **prepares; |
|
|
385 | static int preparemax, preparecnt; |
|
|
386 | |
|
|
387 | static struct ev_check **checks; |
|
|
388 | static int checkmax, checkcnt; |
|
|
389 | |
|
|
390 | /*****************************************************************************/ |
|
|
391 | |
|
|
392 | static struct ev_child *childs [PID_HASHSIZE]; |
628 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
629 | |
|
|
630 | #ifndef WIN32 |
|
|
631 | |
393 | static struct ev_signal childev; |
632 | static struct ev_signal childev; |
394 | |
633 | |
395 | #ifndef WCONTINUED |
634 | #ifndef WCONTINUED |
396 | # define WCONTINUED 0 |
635 | # define WCONTINUED 0 |
397 | #endif |
636 | #endif |
398 | |
637 | |
399 | static void |
638 | static void |
400 | childcb (struct ev_signal *sw, int revents) |
639 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
401 | { |
640 | { |
402 | struct ev_child *w; |
641 | struct ev_child *w; |
|
|
642 | |
|
|
643 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
644 | if (w->pid == pid || !w->pid) |
|
|
645 | { |
|
|
646 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
|
|
647 | w->rpid = pid; |
|
|
648 | w->rstatus = status; |
|
|
649 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
650 | } |
|
|
651 | } |
|
|
652 | |
|
|
653 | static void |
|
|
654 | childcb (EV_P_ struct ev_signal *sw, int revents) |
|
|
655 | { |
403 | int pid, status; |
656 | int pid, status; |
404 | |
657 | |
405 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
658 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
406 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
659 | { |
407 | if (w->pid == pid || w->pid == -1) |
660 | /* make sure we are called again until all childs have been reaped */ |
408 | { |
661 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
409 | w->status = status; |
662 | |
410 | event ((W)w, EV_CHILD); |
663 | child_reap (EV_A_ sw, pid, pid, status); |
411 | } |
664 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
|
|
665 | } |
412 | } |
666 | } |
|
|
667 | |
|
|
668 | #endif |
413 | |
669 | |
414 | /*****************************************************************************/ |
670 | /*****************************************************************************/ |
415 | |
671 | |
|
|
672 | #if EV_USE_KQUEUE |
|
|
673 | # include "ev_kqueue.c" |
|
|
674 | #endif |
416 | #if HAVE_EPOLL |
675 | #if EV_USE_EPOLL |
417 | # include "ev_epoll.c" |
676 | # include "ev_epoll.c" |
418 | #endif |
677 | #endif |
|
|
678 | #if EV_USE_POLL |
|
|
679 | # include "ev_poll.c" |
|
|
680 | #endif |
419 | #if HAVE_SELECT |
681 | #if EV_USE_SELECT |
420 | # include "ev_select.c" |
682 | # include "ev_select.c" |
421 | #endif |
683 | #endif |
422 | |
684 | |
423 | int |
685 | int |
424 | ev_version_major (void) |
686 | ev_version_major (void) |
… | |
… | |
430 | ev_version_minor (void) |
692 | ev_version_minor (void) |
431 | { |
693 | { |
432 | return EV_VERSION_MINOR; |
694 | return EV_VERSION_MINOR; |
433 | } |
695 | } |
434 | |
696 | |
435 | int ev_init (int flags) |
697 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
698 | static int |
|
|
699 | enable_secure (void) |
436 | { |
700 | { |
|
|
701 | #ifdef WIN32 |
|
|
702 | return 0; |
|
|
703 | #else |
|
|
704 | return getuid () != geteuid () |
|
|
705 | || getgid () != getegid (); |
|
|
706 | #endif |
|
|
707 | } |
|
|
708 | |
|
|
709 | int |
|
|
710 | ev_method (EV_P) |
|
|
711 | { |
|
|
712 | return method; |
|
|
713 | } |
|
|
714 | |
|
|
715 | static void |
|
|
716 | loop_init (EV_P_ int methods) |
|
|
717 | { |
437 | if (!ev_method) |
718 | if (!method) |
438 | { |
719 | { |
439 | #if HAVE_MONOTONIC |
720 | #if EV_USE_MONOTONIC |
440 | { |
721 | { |
441 | struct timespec ts; |
722 | struct timespec ts; |
442 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
723 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
443 | have_monotonic = 1; |
724 | have_monotonic = 1; |
444 | } |
725 | } |
445 | #endif |
726 | #endif |
446 | |
727 | |
447 | ev_now = ev_time (); |
728 | rt_now = ev_time (); |
448 | now = get_clock (); |
729 | mn_now = get_clock (); |
|
|
730 | now_floor = mn_now; |
449 | diff = ev_now - now; |
731 | rtmn_diff = rt_now - mn_now; |
450 | |
732 | |
|
|
733 | if (methods == EVMETHOD_AUTO) |
|
|
734 | if (!enable_secure () && getenv ("LIBEV_METHODS")) |
|
|
735 | methods = atoi (getenv ("LIBEV_METHODS")); |
|
|
736 | else |
|
|
737 | methods = EVMETHOD_ANY; |
|
|
738 | |
|
|
739 | method = 0; |
|
|
740 | #if EV_USE_WIN32 |
|
|
741 | if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); |
|
|
742 | #endif |
|
|
743 | #if EV_USE_KQUEUE |
|
|
744 | if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); |
|
|
745 | #endif |
|
|
746 | #if EV_USE_EPOLL |
|
|
747 | if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); |
|
|
748 | #endif |
|
|
749 | #if EV_USE_POLL |
|
|
750 | if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); |
|
|
751 | #endif |
|
|
752 | #if EV_USE_SELECT |
|
|
753 | if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); |
|
|
754 | #endif |
|
|
755 | |
|
|
756 | ev_watcher_init (&sigev, sigcb); |
|
|
757 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
758 | } |
|
|
759 | } |
|
|
760 | |
|
|
761 | void |
|
|
762 | loop_destroy (EV_P) |
|
|
763 | { |
|
|
764 | int i; |
|
|
765 | |
|
|
766 | #if EV_USE_WIN32 |
|
|
767 | if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); |
|
|
768 | #endif |
|
|
769 | #if EV_USE_KQUEUE |
|
|
770 | if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); |
|
|
771 | #endif |
|
|
772 | #if EV_USE_EPOLL |
|
|
773 | if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); |
|
|
774 | #endif |
|
|
775 | #if EV_USE_POLL |
|
|
776 | if (method == EVMETHOD_POLL ) poll_destroy (EV_A); |
|
|
777 | #endif |
|
|
778 | #if EV_USE_SELECT |
|
|
779 | if (method == EVMETHOD_SELECT) select_destroy (EV_A); |
|
|
780 | #endif |
|
|
781 | |
|
|
782 | for (i = NUMPRI; i--; ) |
|
|
783 | array_free (pending, [i]); |
|
|
784 | |
|
|
785 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
786 | array_free_microshit (fdchange); |
|
|
787 | array_free_microshit (timer); |
|
|
788 | array_free_microshit (periodic); |
|
|
789 | array_free_microshit (idle); |
|
|
790 | array_free_microshit (prepare); |
|
|
791 | array_free_microshit (check); |
|
|
792 | |
|
|
793 | method = 0; |
|
|
794 | } |
|
|
795 | |
|
|
796 | static void |
|
|
797 | loop_fork (EV_P) |
|
|
798 | { |
|
|
799 | #if EV_USE_EPOLL |
|
|
800 | if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); |
|
|
801 | #endif |
|
|
802 | #if EV_USE_KQUEUE |
|
|
803 | if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); |
|
|
804 | #endif |
|
|
805 | |
|
|
806 | if (ev_is_active (&sigev)) |
|
|
807 | { |
|
|
808 | /* default loop */ |
|
|
809 | |
|
|
810 | ev_ref (EV_A); |
|
|
811 | ev_io_stop (EV_A_ &sigev); |
|
|
812 | close (sigpipe [0]); |
|
|
813 | close (sigpipe [1]); |
|
|
814 | |
|
|
815 | while (pipe (sigpipe)) |
|
|
816 | syserr ("(libev) error creating pipe"); |
|
|
817 | |
|
|
818 | siginit (EV_A); |
|
|
819 | } |
|
|
820 | |
|
|
821 | postfork = 0; |
|
|
822 | } |
|
|
823 | |
|
|
824 | #if EV_MULTIPLICITY |
|
|
825 | struct ev_loop * |
|
|
826 | ev_loop_new (int methods) |
|
|
827 | { |
|
|
828 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
829 | |
|
|
830 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
831 | |
|
|
832 | loop_init (EV_A_ methods); |
|
|
833 | |
|
|
834 | if (ev_method (EV_A)) |
|
|
835 | return loop; |
|
|
836 | |
|
|
837 | return 0; |
|
|
838 | } |
|
|
839 | |
|
|
840 | void |
|
|
841 | ev_loop_destroy (EV_P) |
|
|
842 | { |
|
|
843 | loop_destroy (EV_A); |
|
|
844 | ev_free (loop); |
|
|
845 | } |
|
|
846 | |
|
|
847 | void |
|
|
848 | ev_loop_fork (EV_P) |
|
|
849 | { |
|
|
850 | postfork = 1; |
|
|
851 | } |
|
|
852 | |
|
|
853 | #endif |
|
|
854 | |
|
|
855 | #if EV_MULTIPLICITY |
|
|
856 | struct ev_loop * |
|
|
857 | #else |
|
|
858 | int |
|
|
859 | #endif |
|
|
860 | ev_default_loop (int methods) |
|
|
861 | { |
|
|
862 | if (sigpipe [0] == sigpipe [1]) |
451 | if (pipe (sigpipe)) |
863 | if (pipe (sigpipe)) |
452 | return 0; |
864 | return 0; |
453 | |
865 | |
454 | ev_method = EVMETHOD_NONE; |
866 | if (!default_loop) |
455 | #if HAVE_EPOLL |
867 | { |
456 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
868 | #if EV_MULTIPLICITY |
|
|
869 | struct ev_loop *loop = default_loop = &default_loop_struct; |
|
|
870 | #else |
|
|
871 | default_loop = 1; |
457 | #endif |
872 | #endif |
458 | #if HAVE_SELECT |
|
|
459 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
460 | #endif |
|
|
461 | |
873 | |
|
|
874 | loop_init (EV_A_ methods); |
|
|
875 | |
462 | if (ev_method) |
876 | if (ev_method (EV_A)) |
463 | { |
877 | { |
464 | ev_watcher_init (&sigev, sigcb); |
|
|
465 | siginit (); |
878 | siginit (EV_A); |
466 | |
879 | |
|
|
880 | #ifndef WIN32 |
467 | ev_signal_init (&childev, childcb, SIGCHLD); |
881 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
882 | ev_set_priority (&childev, EV_MAXPRI); |
468 | ev_signal_start (&childev); |
883 | ev_signal_start (EV_A_ &childev); |
|
|
884 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
885 | #endif |
469 | } |
886 | } |
|
|
887 | else |
|
|
888 | default_loop = 0; |
470 | } |
889 | } |
471 | |
890 | |
472 | return ev_method; |
891 | return default_loop; |
|
|
892 | } |
|
|
893 | |
|
|
894 | void |
|
|
895 | ev_default_destroy (void) |
|
|
896 | { |
|
|
897 | #if EV_MULTIPLICITY |
|
|
898 | struct ev_loop *loop = default_loop; |
|
|
899 | #endif |
|
|
900 | |
|
|
901 | #ifndef WIN32 |
|
|
902 | ev_ref (EV_A); /* child watcher */ |
|
|
903 | ev_signal_stop (EV_A_ &childev); |
|
|
904 | #endif |
|
|
905 | |
|
|
906 | ev_ref (EV_A); /* signal watcher */ |
|
|
907 | ev_io_stop (EV_A_ &sigev); |
|
|
908 | |
|
|
909 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
910 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
911 | |
|
|
912 | loop_destroy (EV_A); |
|
|
913 | } |
|
|
914 | |
|
|
915 | void |
|
|
916 | ev_default_fork (void) |
|
|
917 | { |
|
|
918 | #if EV_MULTIPLICITY |
|
|
919 | struct ev_loop *loop = default_loop; |
|
|
920 | #endif |
|
|
921 | |
|
|
922 | if (method) |
|
|
923 | postfork = 1; |
473 | } |
924 | } |
474 | |
925 | |
475 | /*****************************************************************************/ |
926 | /*****************************************************************************/ |
476 | |
927 | |
477 | void |
|
|
478 | ev_prefork (void) |
|
|
479 | { |
|
|
480 | /* nop */ |
|
|
481 | } |
|
|
482 | |
|
|
483 | void |
|
|
484 | ev_postfork_parent (void) |
|
|
485 | { |
|
|
486 | /* nop */ |
|
|
487 | } |
|
|
488 | |
|
|
489 | void |
|
|
490 | ev_postfork_child (void) |
|
|
491 | { |
|
|
492 | #if HAVE_EPOLL |
|
|
493 | if (ev_method == EVMETHOD_EPOLL) |
|
|
494 | epoll_postfork_child (); |
|
|
495 | #endif |
|
|
496 | |
|
|
497 | ev_io_stop (&sigev); |
|
|
498 | close (sigpipe [0]); |
|
|
499 | close (sigpipe [1]); |
|
|
500 | pipe (sigpipe); |
|
|
501 | siginit (); |
|
|
502 | } |
|
|
503 | |
|
|
504 | /*****************************************************************************/ |
|
|
505 | |
|
|
506 | static void |
928 | static int |
|
|
929 | any_pending (EV_P) |
|
|
930 | { |
|
|
931 | int pri; |
|
|
932 | |
|
|
933 | for (pri = NUMPRI; pri--; ) |
|
|
934 | if (pendingcnt [pri]) |
|
|
935 | return 1; |
|
|
936 | |
|
|
937 | return 0; |
|
|
938 | } |
|
|
939 | |
|
|
940 | static void |
507 | call_pending (void) |
941 | call_pending (EV_P) |
508 | { |
942 | { |
|
|
943 | int pri; |
|
|
944 | |
|
|
945 | for (pri = NUMPRI; pri--; ) |
509 | while (pendingcnt) |
946 | while (pendingcnt [pri]) |
510 | { |
947 | { |
511 | ANPENDING *p = pendings + --pendingcnt; |
948 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
512 | |
949 | |
513 | if (p->w) |
950 | if (p->w) |
514 | { |
951 | { |
515 | p->w->pending = 0; |
952 | p->w->pending = 0; |
516 | p->w->cb (p->w, p->events); |
953 | EV_CB_INVOKE (p->w, p->events); |
517 | } |
954 | } |
518 | } |
955 | } |
519 | } |
956 | } |
520 | |
957 | |
521 | static void |
958 | static void |
522 | timers_reify (void) |
959 | timers_reify (EV_P) |
523 | { |
960 | { |
524 | while (timercnt && timers [0]->at <= now) |
961 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
525 | { |
962 | { |
526 | struct ev_timer *w = timers [0]; |
963 | struct ev_timer *w = timers [0]; |
527 | |
964 | |
528 | event ((W)w, EV_TIMEOUT); |
965 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
529 | |
966 | |
530 | /* first reschedule or stop timer */ |
967 | /* first reschedule or stop timer */ |
531 | if (w->repeat) |
968 | if (w->repeat) |
532 | { |
969 | { |
|
|
970 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
533 | w->at = now + w->repeat; |
971 | ((WT)w)->at = mn_now + w->repeat; |
534 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
|
|
535 | downheap ((WT *)timers, timercnt, 0); |
972 | downheap ((WT *)timers, timercnt, 0); |
536 | } |
973 | } |
537 | else |
974 | else |
538 | ev_timer_stop (w); /* nonrepeating: stop timer */ |
975 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
539 | } |
|
|
540 | } |
|
|
541 | |
976 | |
|
|
977 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
978 | } |
|
|
979 | } |
|
|
980 | |
542 | static void |
981 | static void |
543 | periodics_reify (void) |
982 | periodics_reify (EV_P) |
544 | { |
983 | { |
545 | while (periodiccnt && periodics [0]->at <= ev_now) |
984 | while (periodiccnt && ((WT)periodics [0])->at <= rt_now) |
546 | { |
985 | { |
547 | struct ev_periodic *w = periodics [0]; |
986 | struct ev_periodic *w = periodics [0]; |
548 | |
987 | |
|
|
988 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
|
|
989 | |
549 | /* first reschedule or stop timer */ |
990 | /* first reschedule or stop timer */ |
550 | if (w->interval) |
991 | if (w->reschedule_cb) |
551 | { |
992 | { |
|
|
993 | ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001); |
|
|
994 | |
|
|
995 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now)); |
|
|
996 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
997 | } |
|
|
998 | else if (w->interval) |
|
|
999 | { |
552 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
1000 | ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
553 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
1001 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); |
554 | downheap ((WT *)periodics, periodiccnt, 0); |
1002 | downheap ((WT *)periodics, periodiccnt, 0); |
555 | } |
1003 | } |
556 | else |
1004 | else |
557 | ev_periodic_stop (w); /* nonrepeating: stop timer */ |
1005 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
558 | |
1006 | |
559 | event ((W)w, EV_TIMEOUT); |
1007 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
560 | } |
1008 | } |
561 | } |
1009 | } |
562 | |
1010 | |
563 | static void |
1011 | static void |
564 | periodics_reschedule (ev_tstamp diff) |
1012 | periodics_reschedule (EV_P) |
565 | { |
1013 | { |
566 | int i; |
1014 | int i; |
567 | |
1015 | |
568 | /* adjust periodics after time jump */ |
1016 | /* adjust periodics after time jump */ |
569 | for (i = 0; i < periodiccnt; ++i) |
1017 | for (i = 0; i < periodiccnt; ++i) |
570 | { |
1018 | { |
571 | struct ev_periodic *w = periodics [i]; |
1019 | struct ev_periodic *w = periodics [i]; |
572 | |
1020 | |
|
|
1021 | if (w->reschedule_cb) |
|
|
1022 | ((WT)w)->at = w->reschedule_cb (w, rt_now); |
573 | if (w->interval) |
1023 | else if (w->interval) |
|
|
1024 | ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1025 | } |
|
|
1026 | |
|
|
1027 | /* now rebuild the heap */ |
|
|
1028 | for (i = periodiccnt >> 1; i--; ) |
|
|
1029 | downheap ((WT *)periodics, periodiccnt, i); |
|
|
1030 | } |
|
|
1031 | |
|
|
1032 | inline int |
|
|
1033 | time_update_monotonic (EV_P) |
|
|
1034 | { |
|
|
1035 | mn_now = get_clock (); |
|
|
1036 | |
|
|
1037 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
1038 | { |
|
|
1039 | rt_now = rtmn_diff + mn_now; |
|
|
1040 | return 0; |
|
|
1041 | } |
|
|
1042 | else |
|
|
1043 | { |
|
|
1044 | now_floor = mn_now; |
|
|
1045 | rt_now = ev_time (); |
|
|
1046 | return 1; |
|
|
1047 | } |
|
|
1048 | } |
|
|
1049 | |
|
|
1050 | static void |
|
|
1051 | time_update (EV_P) |
|
|
1052 | { |
|
|
1053 | int i; |
|
|
1054 | |
|
|
1055 | #if EV_USE_MONOTONIC |
|
|
1056 | if (expect_true (have_monotonic)) |
|
|
1057 | { |
|
|
1058 | if (time_update_monotonic (EV_A)) |
574 | { |
1059 | { |
575 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
1060 | ev_tstamp odiff = rtmn_diff; |
576 | |
1061 | |
577 | if (fabs (diff) >= 1e-4) |
1062 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
578 | { |
1063 | { |
579 | ev_periodic_stop (w); |
1064 | rtmn_diff = rt_now - mn_now; |
580 | ev_periodic_start (w); |
|
|
581 | |
1065 | |
582 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
1066 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
|
|
1067 | return; /* all is well */ |
|
|
1068 | |
|
|
1069 | rt_now = ev_time (); |
|
|
1070 | mn_now = get_clock (); |
|
|
1071 | now_floor = mn_now; |
583 | } |
1072 | } |
|
|
1073 | |
|
|
1074 | periodics_reschedule (EV_A); |
|
|
1075 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1076 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
584 | } |
1077 | } |
585 | } |
1078 | } |
586 | } |
1079 | else |
587 | |
1080 | #endif |
588 | static void |
1081 | { |
589 | time_update (void) |
|
|
590 | { |
|
|
591 | int i; |
|
|
592 | |
|
|
593 | ev_now = ev_time (); |
1082 | rt_now = ev_time (); |
594 | |
1083 | |
595 | if (have_monotonic) |
1084 | if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
596 | { |
|
|
597 | ev_tstamp odiff = diff; |
|
|
598 | |
|
|
599 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
600 | { |
1085 | { |
601 | now = get_clock (); |
|
|
602 | diff = ev_now - now; |
|
|
603 | |
|
|
604 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
|
|
605 | return; /* all is well */ |
|
|
606 | |
|
|
607 | ev_now = ev_time (); |
|
|
608 | } |
|
|
609 | |
|
|
610 | periodics_reschedule (diff - odiff); |
|
|
611 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
612 | } |
|
|
613 | else |
|
|
614 | { |
|
|
615 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
|
|
616 | { |
|
|
617 | periodics_reschedule (ev_now - now); |
1086 | periodics_reschedule (EV_A); |
618 | |
1087 | |
619 | /* adjust timers. this is easy, as the offset is the same for all */ |
1088 | /* adjust timers. this is easy, as the offset is the same for all */ |
620 | for (i = 0; i < timercnt; ++i) |
1089 | for (i = 0; i < timercnt; ++i) |
621 | timers [i]->at += diff; |
1090 | ((WT)timers [i])->at += rt_now - mn_now; |
622 | } |
1091 | } |
623 | |
1092 | |
624 | now = ev_now; |
1093 | mn_now = rt_now; |
625 | } |
1094 | } |
626 | } |
1095 | } |
627 | |
1096 | |
628 | int ev_loop_done; |
1097 | void |
|
|
1098 | ev_ref (EV_P) |
|
|
1099 | { |
|
|
1100 | ++activecnt; |
|
|
1101 | } |
629 | |
1102 | |
|
|
1103 | void |
|
|
1104 | ev_unref (EV_P) |
|
|
1105 | { |
|
|
1106 | --activecnt; |
|
|
1107 | } |
|
|
1108 | |
|
|
1109 | static int loop_done; |
|
|
1110 | |
|
|
1111 | void |
630 | void ev_loop (int flags) |
1112 | ev_loop (EV_P_ int flags) |
631 | { |
1113 | { |
632 | double block; |
1114 | double block; |
633 | ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
1115 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
634 | |
1116 | |
635 | do |
1117 | do |
636 | { |
1118 | { |
637 | /* queue check watchers (and execute them) */ |
1119 | /* queue check watchers (and execute them) */ |
638 | if (preparecnt) |
1120 | if (expect_false (preparecnt)) |
639 | { |
1121 | { |
640 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
1122 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
641 | call_pending (); |
1123 | call_pending (EV_A); |
642 | } |
1124 | } |
643 | |
1125 | |
|
|
1126 | /* we might have forked, so reify kernel state if necessary */ |
|
|
1127 | if (expect_false (postfork)) |
|
|
1128 | loop_fork (EV_A); |
|
|
1129 | |
644 | /* update fd-related kernel structures */ |
1130 | /* update fd-related kernel structures */ |
645 | fd_reify (); |
1131 | fd_reify (EV_A); |
646 | |
1132 | |
647 | /* calculate blocking time */ |
1133 | /* calculate blocking time */ |
648 | |
1134 | |
649 | /* we only need this for !monotonic clockor timers, but as we basically |
1135 | /* we only need this for !monotonic clock or timers, but as we basically |
650 | always have timers, we just calculate it always */ |
1136 | always have timers, we just calculate it always */ |
|
|
1137 | #if EV_USE_MONOTONIC |
|
|
1138 | if (expect_true (have_monotonic)) |
|
|
1139 | time_update_monotonic (EV_A); |
|
|
1140 | else |
|
|
1141 | #endif |
|
|
1142 | { |
651 | ev_now = ev_time (); |
1143 | rt_now = ev_time (); |
|
|
1144 | mn_now = rt_now; |
|
|
1145 | } |
652 | |
1146 | |
653 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
1147 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
654 | block = 0.; |
1148 | block = 0.; |
655 | else |
1149 | else |
656 | { |
1150 | { |
657 | block = MAX_BLOCKTIME; |
1151 | block = MAX_BLOCKTIME; |
658 | |
1152 | |
659 | if (timercnt) |
1153 | if (timercnt) |
660 | { |
1154 | { |
661 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
1155 | ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; |
662 | if (block > to) block = to; |
1156 | if (block > to) block = to; |
663 | } |
1157 | } |
664 | |
1158 | |
665 | if (periodiccnt) |
1159 | if (periodiccnt) |
666 | { |
1160 | { |
667 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
1161 | ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; |
668 | if (block > to) block = to; |
1162 | if (block > to) block = to; |
669 | } |
1163 | } |
670 | |
1164 | |
671 | if (block < 0.) block = 0.; |
1165 | if (block < 0.) block = 0.; |
672 | } |
1166 | } |
673 | |
1167 | |
674 | method_poll (block); |
1168 | method_poll (EV_A_ block); |
675 | |
1169 | |
676 | /* update ev_now, do magic */ |
1170 | /* update rt_now, do magic */ |
677 | time_update (); |
1171 | time_update (EV_A); |
678 | |
1172 | |
679 | /* queue pending timers and reschedule them */ |
1173 | /* queue pending timers and reschedule them */ |
680 | timers_reify (); /* relative timers called last */ |
1174 | timers_reify (EV_A); /* relative timers called last */ |
681 | periodics_reify (); /* absolute timers called first */ |
1175 | periodics_reify (EV_A); /* absolute timers called first */ |
682 | |
1176 | |
683 | /* queue idle watchers unless io or timers are pending */ |
1177 | /* queue idle watchers unless io or timers are pending */ |
684 | if (!pendingcnt) |
1178 | if (idlecnt && !any_pending (EV_A)) |
685 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
1179 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
686 | |
1180 | |
687 | /* queue check watchers, to be executed first */ |
1181 | /* queue check watchers, to be executed first */ |
688 | if (checkcnt) |
1182 | if (checkcnt) |
689 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1183 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
690 | |
1184 | |
691 | call_pending (); |
1185 | call_pending (EV_A); |
692 | } |
1186 | } |
693 | while (!ev_loop_done); |
1187 | while (activecnt && !loop_done); |
694 | |
1188 | |
695 | if (ev_loop_done != 2) |
1189 | if (loop_done != 2) |
696 | ev_loop_done = 0; |
1190 | loop_done = 0; |
|
|
1191 | } |
|
|
1192 | |
|
|
1193 | void |
|
|
1194 | ev_unloop (EV_P_ int how) |
|
|
1195 | { |
|
|
1196 | loop_done = how; |
697 | } |
1197 | } |
698 | |
1198 | |
699 | /*****************************************************************************/ |
1199 | /*****************************************************************************/ |
700 | |
1200 | |
701 | static void |
1201 | inline void |
702 | wlist_add (WL *head, WL elem) |
1202 | wlist_add (WL *head, WL elem) |
703 | { |
1203 | { |
704 | elem->next = *head; |
1204 | elem->next = *head; |
705 | *head = elem; |
1205 | *head = elem; |
706 | } |
1206 | } |
707 | |
1207 | |
708 | static void |
1208 | inline void |
709 | wlist_del (WL *head, WL elem) |
1209 | wlist_del (WL *head, WL elem) |
710 | { |
1210 | { |
711 | while (*head) |
1211 | while (*head) |
712 | { |
1212 | { |
713 | if (*head == elem) |
1213 | if (*head == elem) |
… | |
… | |
718 | |
1218 | |
719 | head = &(*head)->next; |
1219 | head = &(*head)->next; |
720 | } |
1220 | } |
721 | } |
1221 | } |
722 | |
1222 | |
723 | static void |
1223 | inline void |
724 | ev_clear (W w) |
1224 | ev_clear_pending (EV_P_ W w) |
725 | { |
1225 | { |
726 | if (w->pending) |
1226 | if (w->pending) |
727 | { |
1227 | { |
728 | pendings [w->pending - 1].w = 0; |
1228 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
729 | w->pending = 0; |
1229 | w->pending = 0; |
730 | } |
1230 | } |
731 | } |
1231 | } |
732 | |
1232 | |
733 | static void |
1233 | inline void |
734 | ev_start (W w, int active) |
1234 | ev_start (EV_P_ W w, int active) |
735 | { |
1235 | { |
|
|
1236 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1237 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1238 | |
736 | w->active = active; |
1239 | w->active = active; |
|
|
1240 | ev_ref (EV_A); |
737 | } |
1241 | } |
738 | |
1242 | |
739 | static void |
1243 | inline void |
740 | ev_stop (W w) |
1244 | ev_stop (EV_P_ W w) |
741 | { |
1245 | { |
|
|
1246 | ev_unref (EV_A); |
742 | w->active = 0; |
1247 | w->active = 0; |
743 | } |
1248 | } |
744 | |
1249 | |
745 | /*****************************************************************************/ |
1250 | /*****************************************************************************/ |
746 | |
1251 | |
747 | void |
1252 | void |
748 | ev_io_start (struct ev_io *w) |
1253 | ev_io_start (EV_P_ struct ev_io *w) |
749 | { |
1254 | { |
|
|
1255 | int fd = w->fd; |
|
|
1256 | |
750 | if (ev_is_active (w)) |
1257 | if (ev_is_active (w)) |
751 | return; |
1258 | return; |
752 | |
1259 | |
753 | int fd = w->fd; |
1260 | assert (("ev_io_start called with negative fd", fd >= 0)); |
754 | |
1261 | |
755 | ev_start ((W)w, 1); |
1262 | ev_start (EV_A_ (W)w, 1); |
756 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1263 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
757 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1264 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
758 | |
1265 | |
759 | fd_change (fd); |
1266 | fd_change (EV_A_ fd); |
760 | } |
1267 | } |
761 | |
1268 | |
762 | void |
1269 | void |
763 | ev_io_stop (struct ev_io *w) |
1270 | ev_io_stop (EV_P_ struct ev_io *w) |
764 | { |
1271 | { |
765 | ev_clear ((W)w); |
1272 | ev_clear_pending (EV_A_ (W)w); |
766 | if (!ev_is_active (w)) |
1273 | if (!ev_is_active (w)) |
767 | return; |
1274 | return; |
768 | |
1275 | |
769 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1276 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
770 | ev_stop ((W)w); |
1277 | ev_stop (EV_A_ (W)w); |
771 | |
1278 | |
772 | fd_change (w->fd); |
1279 | fd_change (EV_A_ w->fd); |
773 | } |
1280 | } |
774 | |
1281 | |
775 | void |
1282 | void |
776 | ev_timer_start (struct ev_timer *w) |
1283 | ev_timer_start (EV_P_ struct ev_timer *w) |
777 | { |
1284 | { |
778 | if (ev_is_active (w)) |
1285 | if (ev_is_active (w)) |
779 | return; |
1286 | return; |
780 | |
1287 | |
781 | w->at += now; |
1288 | ((WT)w)->at += mn_now; |
782 | |
1289 | |
783 | assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); |
1290 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
784 | |
1291 | |
785 | ev_start ((W)w, ++timercnt); |
1292 | ev_start (EV_A_ (W)w, ++timercnt); |
786 | array_needsize (timers, timermax, timercnt, ); |
1293 | array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); |
787 | timers [timercnt - 1] = w; |
1294 | timers [timercnt - 1] = w; |
788 | upheap ((WT *)timers, timercnt - 1); |
1295 | upheap ((WT *)timers, timercnt - 1); |
789 | } |
|
|
790 | |
1296 | |
|
|
1297 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1298 | } |
|
|
1299 | |
791 | void |
1300 | void |
792 | ev_timer_stop (struct ev_timer *w) |
1301 | ev_timer_stop (EV_P_ struct ev_timer *w) |
793 | { |
1302 | { |
794 | ev_clear ((W)w); |
1303 | ev_clear_pending (EV_A_ (W)w); |
795 | if (!ev_is_active (w)) |
1304 | if (!ev_is_active (w)) |
796 | return; |
1305 | return; |
797 | |
1306 | |
|
|
1307 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1308 | |
798 | if (w->active < timercnt--) |
1309 | if (((W)w)->active < timercnt--) |
799 | { |
1310 | { |
800 | timers [w->active - 1] = timers [timercnt]; |
1311 | timers [((W)w)->active - 1] = timers [timercnt]; |
801 | downheap ((WT *)timers, timercnt, w->active - 1); |
1312 | downheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
802 | } |
1313 | } |
803 | |
1314 | |
804 | w->at = w->repeat; |
1315 | ((WT)w)->at = w->repeat; |
805 | |
1316 | |
806 | ev_stop ((W)w); |
1317 | ev_stop (EV_A_ (W)w); |
807 | } |
1318 | } |
808 | |
1319 | |
809 | void |
1320 | void |
810 | ev_timer_again (struct ev_timer *w) |
1321 | ev_timer_again (EV_P_ struct ev_timer *w) |
811 | { |
1322 | { |
812 | if (ev_is_active (w)) |
1323 | if (ev_is_active (w)) |
813 | { |
1324 | { |
814 | if (w->repeat) |
1325 | if (w->repeat) |
815 | { |
1326 | { |
816 | w->at = now + w->repeat; |
1327 | ((WT)w)->at = mn_now + w->repeat; |
817 | downheap ((WT *)timers, timercnt, w->active - 1); |
1328 | downheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
818 | } |
1329 | } |
819 | else |
1330 | else |
820 | ev_timer_stop (w); |
1331 | ev_timer_stop (EV_A_ w); |
821 | } |
1332 | } |
822 | else if (w->repeat) |
1333 | else if (w->repeat) |
823 | ev_timer_start (w); |
1334 | ev_timer_start (EV_A_ w); |
824 | } |
1335 | } |
825 | |
1336 | |
826 | void |
1337 | void |
827 | ev_periodic_start (struct ev_periodic *w) |
1338 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
828 | { |
1339 | { |
829 | if (ev_is_active (w)) |
1340 | if (ev_is_active (w)) |
830 | return; |
1341 | return; |
831 | |
1342 | |
832 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
1343 | if (w->reschedule_cb) |
833 | |
1344 | ((WT)w)->at = w->reschedule_cb (w, rt_now); |
|
|
1345 | else if (w->interval) |
|
|
1346 | { |
|
|
1347 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
834 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1348 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
835 | if (w->interval) |
|
|
836 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
1349 | ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1350 | } |
837 | |
1351 | |
838 | ev_start ((W)w, ++periodiccnt); |
1352 | ev_start (EV_A_ (W)w, ++periodiccnt); |
839 | array_needsize (periodics, periodicmax, periodiccnt, ); |
1353 | array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); |
840 | periodics [periodiccnt - 1] = w; |
1354 | periodics [periodiccnt - 1] = w; |
841 | upheap ((WT *)periodics, periodiccnt - 1); |
1355 | upheap ((WT *)periodics, periodiccnt - 1); |
842 | } |
|
|
843 | |
1356 | |
|
|
1357 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1358 | } |
|
|
1359 | |
844 | void |
1360 | void |
845 | ev_periodic_stop (struct ev_periodic *w) |
1361 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
846 | { |
1362 | { |
847 | ev_clear ((W)w); |
1363 | ev_clear_pending (EV_A_ (W)w); |
848 | if (!ev_is_active (w)) |
1364 | if (!ev_is_active (w)) |
849 | return; |
1365 | return; |
850 | |
1366 | |
|
|
1367 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1368 | |
851 | if (w->active < periodiccnt--) |
1369 | if (((W)w)->active < periodiccnt--) |
852 | { |
1370 | { |
853 | periodics [w->active - 1] = periodics [periodiccnt]; |
1371 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
854 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
1372 | downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
855 | } |
1373 | } |
856 | |
1374 | |
857 | ev_stop ((W)w); |
1375 | ev_stop (EV_A_ (W)w); |
858 | } |
1376 | } |
859 | |
1377 | |
860 | void |
1378 | void |
|
|
1379 | ev_periodic_again (EV_P_ struct ev_periodic *w) |
|
|
1380 | { |
|
|
1381 | ev_periodic_stop (EV_A_ w); |
|
|
1382 | ev_periodic_start (EV_A_ w); |
|
|
1383 | } |
|
|
1384 | |
|
|
1385 | void |
861 | ev_signal_start (struct ev_signal *w) |
1386 | ev_idle_start (EV_P_ struct ev_idle *w) |
862 | { |
1387 | { |
863 | if (ev_is_active (w)) |
1388 | if (ev_is_active (w)) |
864 | return; |
1389 | return; |
865 | |
1390 | |
|
|
1391 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1392 | array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void)); |
|
|
1393 | idles [idlecnt - 1] = w; |
|
|
1394 | } |
|
|
1395 | |
|
|
1396 | void |
|
|
1397 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1398 | { |
|
|
1399 | ev_clear_pending (EV_A_ (W)w); |
|
|
1400 | if (ev_is_active (w)) |
|
|
1401 | return; |
|
|
1402 | |
|
|
1403 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
|
|
1404 | ev_stop (EV_A_ (W)w); |
|
|
1405 | } |
|
|
1406 | |
|
|
1407 | void |
|
|
1408 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1409 | { |
|
|
1410 | if (ev_is_active (w)) |
|
|
1411 | return; |
|
|
1412 | |
|
|
1413 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1414 | array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void)); |
|
|
1415 | prepares [preparecnt - 1] = w; |
|
|
1416 | } |
|
|
1417 | |
|
|
1418 | void |
|
|
1419 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1420 | { |
|
|
1421 | ev_clear_pending (EV_A_ (W)w); |
|
|
1422 | if (ev_is_active (w)) |
|
|
1423 | return; |
|
|
1424 | |
|
|
1425 | prepares [((W)w)->active - 1] = prepares [--preparecnt]; |
|
|
1426 | ev_stop (EV_A_ (W)w); |
|
|
1427 | } |
|
|
1428 | |
|
|
1429 | void |
|
|
1430 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1431 | { |
|
|
1432 | if (ev_is_active (w)) |
|
|
1433 | return; |
|
|
1434 | |
|
|
1435 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1436 | array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void)); |
|
|
1437 | checks [checkcnt - 1] = w; |
|
|
1438 | } |
|
|
1439 | |
|
|
1440 | void |
|
|
1441 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1442 | { |
|
|
1443 | ev_clear_pending (EV_A_ (W)w); |
|
|
1444 | if (ev_is_active (w)) |
|
|
1445 | return; |
|
|
1446 | |
|
|
1447 | checks [((W)w)->active - 1] = checks [--checkcnt]; |
|
|
1448 | ev_stop (EV_A_ (W)w); |
|
|
1449 | } |
|
|
1450 | |
|
|
1451 | #ifndef SA_RESTART |
|
|
1452 | # define SA_RESTART 0 |
|
|
1453 | #endif |
|
|
1454 | |
|
|
1455 | void |
|
|
1456 | ev_signal_start (EV_P_ struct ev_signal *w) |
|
|
1457 | { |
|
|
1458 | #if EV_MULTIPLICITY |
|
|
1459 | assert (("signal watchers are only supported in the default loop", loop == default_loop)); |
|
|
1460 | #endif |
|
|
1461 | if (ev_is_active (w)) |
|
|
1462 | return; |
|
|
1463 | |
|
|
1464 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1465 | |
866 | ev_start ((W)w, 1); |
1466 | ev_start (EV_A_ (W)w, 1); |
867 | array_needsize (signals, signalmax, w->signum, signals_init); |
1467 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
868 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1468 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
869 | |
1469 | |
870 | if (!w->next) |
1470 | if (!((WL)w)->next) |
871 | { |
1471 | { |
|
|
1472 | #if WIN32 |
|
|
1473 | signal (w->signum, sighandler); |
|
|
1474 | #else |
872 | struct sigaction sa; |
1475 | struct sigaction sa; |
873 | sa.sa_handler = sighandler; |
1476 | sa.sa_handler = sighandler; |
874 | sigfillset (&sa.sa_mask); |
1477 | sigfillset (&sa.sa_mask); |
875 | sa.sa_flags = 0; |
1478 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
876 | sigaction (w->signum, &sa, 0); |
1479 | sigaction (w->signum, &sa, 0); |
|
|
1480 | #endif |
877 | } |
1481 | } |
878 | } |
1482 | } |
879 | |
1483 | |
880 | void |
1484 | void |
881 | ev_signal_stop (struct ev_signal *w) |
1485 | ev_signal_stop (EV_P_ struct ev_signal *w) |
882 | { |
1486 | { |
883 | ev_clear ((W)w); |
1487 | ev_clear_pending (EV_A_ (W)w); |
884 | if (!ev_is_active (w)) |
1488 | if (!ev_is_active (w)) |
885 | return; |
1489 | return; |
886 | |
1490 | |
887 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1491 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
888 | ev_stop ((W)w); |
1492 | ev_stop (EV_A_ (W)w); |
889 | |
1493 | |
890 | if (!signals [w->signum - 1].head) |
1494 | if (!signals [w->signum - 1].head) |
891 | signal (w->signum, SIG_DFL); |
1495 | signal (w->signum, SIG_DFL); |
892 | } |
1496 | } |
893 | |
1497 | |
894 | void |
1498 | void |
895 | ev_idle_start (struct ev_idle *w) |
1499 | ev_child_start (EV_P_ struct ev_child *w) |
896 | { |
1500 | { |
|
|
1501 | #if EV_MULTIPLICITY |
|
|
1502 | assert (("child watchers are only supported in the default loop", loop == default_loop)); |
|
|
1503 | #endif |
897 | if (ev_is_active (w)) |
1504 | if (ev_is_active (w)) |
898 | return; |
1505 | return; |
899 | |
1506 | |
900 | ev_start ((W)w, ++idlecnt); |
1507 | ev_start (EV_A_ (W)w, 1); |
901 | array_needsize (idles, idlemax, idlecnt, ); |
1508 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
902 | idles [idlecnt - 1] = w; |
|
|
903 | } |
1509 | } |
904 | |
1510 | |
905 | void |
1511 | void |
906 | ev_idle_stop (struct ev_idle *w) |
1512 | ev_child_stop (EV_P_ struct ev_child *w) |
907 | { |
1513 | { |
908 | ev_clear ((W)w); |
1514 | ev_clear_pending (EV_A_ (W)w); |
909 | if (ev_is_active (w)) |
1515 | if (ev_is_active (w)) |
910 | return; |
1516 | return; |
911 | |
1517 | |
912 | idles [w->active - 1] = idles [--idlecnt]; |
|
|
913 | ev_stop ((W)w); |
|
|
914 | } |
|
|
915 | |
|
|
916 | void |
|
|
917 | ev_prepare_start (struct ev_prepare *w) |
|
|
918 | { |
|
|
919 | if (ev_is_active (w)) |
|
|
920 | return; |
|
|
921 | |
|
|
922 | ev_start ((W)w, ++preparecnt); |
|
|
923 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
924 | prepares [preparecnt - 1] = w; |
|
|
925 | } |
|
|
926 | |
|
|
927 | void |
|
|
928 | ev_prepare_stop (struct ev_prepare *w) |
|
|
929 | { |
|
|
930 | ev_clear ((W)w); |
|
|
931 | if (ev_is_active (w)) |
|
|
932 | return; |
|
|
933 | |
|
|
934 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
935 | ev_stop ((W)w); |
|
|
936 | } |
|
|
937 | |
|
|
938 | void |
|
|
939 | ev_check_start (struct ev_check *w) |
|
|
940 | { |
|
|
941 | if (ev_is_active (w)) |
|
|
942 | return; |
|
|
943 | |
|
|
944 | ev_start ((W)w, ++checkcnt); |
|
|
945 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
946 | checks [checkcnt - 1] = w; |
|
|
947 | } |
|
|
948 | |
|
|
949 | void |
|
|
950 | ev_check_stop (struct ev_check *w) |
|
|
951 | { |
|
|
952 | ev_clear ((W)w); |
|
|
953 | if (ev_is_active (w)) |
|
|
954 | return; |
|
|
955 | |
|
|
956 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
957 | ev_stop ((W)w); |
|
|
958 | } |
|
|
959 | |
|
|
960 | void |
|
|
961 | ev_child_start (struct ev_child *w) |
|
|
962 | { |
|
|
963 | if (ev_is_active (w)) |
|
|
964 | return; |
|
|
965 | |
|
|
966 | ev_start ((W)w, 1); |
|
|
967 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
968 | } |
|
|
969 | |
|
|
970 | void |
|
|
971 | ev_child_stop (struct ev_child *w) |
|
|
972 | { |
|
|
973 | ev_clear ((W)w); |
|
|
974 | if (ev_is_active (w)) |
|
|
975 | return; |
|
|
976 | |
|
|
977 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
1518 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
978 | ev_stop ((W)w); |
1519 | ev_stop (EV_A_ (W)w); |
979 | } |
1520 | } |
980 | |
1521 | |
981 | /*****************************************************************************/ |
1522 | /*****************************************************************************/ |
982 | |
1523 | |
983 | struct ev_once |
1524 | struct ev_once |
… | |
… | |
987 | void (*cb)(int revents, void *arg); |
1528 | void (*cb)(int revents, void *arg); |
988 | void *arg; |
1529 | void *arg; |
989 | }; |
1530 | }; |
990 | |
1531 | |
991 | static void |
1532 | static void |
992 | once_cb (struct ev_once *once, int revents) |
1533 | once_cb (EV_P_ struct ev_once *once, int revents) |
993 | { |
1534 | { |
994 | void (*cb)(int revents, void *arg) = once->cb; |
1535 | void (*cb)(int revents, void *arg) = once->cb; |
995 | void *arg = once->arg; |
1536 | void *arg = once->arg; |
996 | |
1537 | |
997 | ev_io_stop (&once->io); |
1538 | ev_io_stop (EV_A_ &once->io); |
998 | ev_timer_stop (&once->to); |
1539 | ev_timer_stop (EV_A_ &once->to); |
999 | free (once); |
1540 | ev_free (once); |
1000 | |
1541 | |
1001 | cb (revents, arg); |
1542 | cb (revents, arg); |
1002 | } |
1543 | } |
1003 | |
1544 | |
1004 | static void |
1545 | static void |
1005 | once_cb_io (struct ev_io *w, int revents) |
1546 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
1006 | { |
1547 | { |
1007 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1548 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1008 | } |
1549 | } |
1009 | |
1550 | |
1010 | static void |
1551 | static void |
1011 | once_cb_to (struct ev_timer *w, int revents) |
1552 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
1012 | { |
1553 | { |
1013 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1554 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1014 | } |
1555 | } |
1015 | |
1556 | |
1016 | void |
1557 | void |
1017 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1558 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1018 | { |
1559 | { |
1019 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
1560 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
1020 | |
1561 | |
1021 | if (!once) |
1562 | if (!once) |
1022 | cb (EV_ERROR, arg); |
1563 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
1023 | else |
1564 | else |
1024 | { |
1565 | { |
1025 | once->cb = cb; |
1566 | once->cb = cb; |
1026 | once->arg = arg; |
1567 | once->arg = arg; |
1027 | |
1568 | |
1028 | ev_watcher_init (&once->io, once_cb_io); |
1569 | ev_watcher_init (&once->io, once_cb_io); |
1029 | |
|
|
1030 | if (fd >= 0) |
1570 | if (fd >= 0) |
1031 | { |
1571 | { |
1032 | ev_io_set (&once->io, fd, events); |
1572 | ev_io_set (&once->io, fd, events); |
1033 | ev_io_start (&once->io); |
1573 | ev_io_start (EV_A_ &once->io); |
1034 | } |
1574 | } |
1035 | |
1575 | |
1036 | ev_watcher_init (&once->to, once_cb_to); |
1576 | ev_watcher_init (&once->to, once_cb_to); |
1037 | |
|
|
1038 | if (timeout >= 0.) |
1577 | if (timeout >= 0.) |
1039 | { |
1578 | { |
1040 | ev_timer_set (&once->to, timeout, 0.); |
1579 | ev_timer_set (&once->to, timeout, 0.); |
1041 | ev_timer_start (&once->to); |
1580 | ev_timer_start (EV_A_ &once->to); |
1042 | } |
1581 | } |
1043 | } |
1582 | } |
1044 | } |
1583 | } |
1045 | |
1584 | |
1046 | /*****************************************************************************/ |
|
|
1047 | |
|
|
1048 | #if 0 |
|
|
1049 | |
|
|
1050 | struct ev_io wio; |
|
|
1051 | |
|
|
1052 | static void |
|
|
1053 | sin_cb (struct ev_io *w, int revents) |
|
|
1054 | { |
|
|
1055 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
1056 | } |
|
|
1057 | |
|
|
1058 | static void |
|
|
1059 | ocb (struct ev_timer *w, int revents) |
|
|
1060 | { |
|
|
1061 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
1062 | ev_timer_stop (w); |
|
|
1063 | ev_timer_start (w); |
|
|
1064 | } |
|
|
1065 | |
|
|
1066 | static void |
|
|
1067 | scb (struct ev_signal *w, int revents) |
|
|
1068 | { |
|
|
1069 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
1070 | ev_io_stop (&wio); |
|
|
1071 | ev_io_start (&wio); |
|
|
1072 | } |
|
|
1073 | |
|
|
1074 | static void |
|
|
1075 | gcb (struct ev_signal *w, int revents) |
|
|
1076 | { |
|
|
1077 | fprintf (stderr, "generic %x\n", revents); |
|
|
1078 | |
|
|
1079 | } |
|
|
1080 | |
|
|
1081 | int main (void) |
|
|
1082 | { |
|
|
1083 | ev_init (0); |
|
|
1084 | |
|
|
1085 | ev_io_init (&wio, sin_cb, 0, EV_READ); |
|
|
1086 | ev_io_start (&wio); |
|
|
1087 | |
|
|
1088 | struct ev_timer t[10000]; |
|
|
1089 | |
|
|
1090 | #if 0 |
|
|
1091 | int i; |
|
|
1092 | for (i = 0; i < 10000; ++i) |
|
|
1093 | { |
|
|
1094 | struct ev_timer *w = t + i; |
|
|
1095 | ev_watcher_init (w, ocb, i); |
|
|
1096 | ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
1097 | ev_timer_start (w); |
|
|
1098 | if (drand48 () < 0.5) |
|
|
1099 | ev_timer_stop (w); |
|
|
1100 | } |
|
|
1101 | #endif |
|
|
1102 | |
|
|
1103 | struct ev_timer t1; |
|
|
1104 | ev_timer_init (&t1, ocb, 5, 10); |
|
|
1105 | ev_timer_start (&t1); |
|
|
1106 | |
|
|
1107 | struct ev_signal sig; |
|
|
1108 | ev_signal_init (&sig, scb, SIGQUIT); |
|
|
1109 | ev_signal_start (&sig); |
|
|
1110 | |
|
|
1111 | struct ev_check cw; |
|
|
1112 | ev_check_init (&cw, gcb); |
|
|
1113 | ev_check_start (&cw); |
|
|
1114 | |
|
|
1115 | struct ev_idle iw; |
|
|
1116 | ev_idle_init (&iw, gcb); |
|
|
1117 | ev_idle_start (&iw); |
|
|
1118 | |
|
|
1119 | ev_loop (0); |
|
|
1120 | |
|
|
1121 | return 0; |
|
|
1122 | } |
|
|
1123 | |
|
|
1124 | #endif |
|
|
1125 | |
|
|
1126 | |
|
|
1127 | |
|
|
1128 | |
|
|