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 | |
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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 | |
44 | #ifndef HAVE_MONOTONIC |
78 | #ifndef EV_USE_MONOTONIC |
45 | # ifdef CLOCK_MONOTONIC |
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46 | # 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 |
47 | # endif |
105 | # endif |
48 | #endif |
106 | #endif |
49 | |
107 | |
50 | #ifndef HAVE_SELECT |
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51 | # define HAVE_SELECT 1 |
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52 | #endif |
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53 | |
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54 | #ifndef HAVE_EPOLL |
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55 | # define HAVE_EPOLL 0 |
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56 | #endif |
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57 | |
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58 | #ifndef HAVE_REALTIME |
108 | #ifndef EV_USE_REALTIME |
59 | # define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
109 | # define EV_USE_REALTIME 1 |
60 | #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 | /**/ |
61 | |
125 | |
62 | #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) */ |
63 | #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 */ |
64 | |
130 | |
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131 | #ifdef EV_H |
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132 | # include EV_H |
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133 | #else |
65 | #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) |
66 | |
150 | |
67 | typedef struct ev_watcher *W; |
151 | typedef struct ev_watcher *W; |
68 | typedef struct ev_watcher_list *WL; |
152 | typedef struct ev_watcher_list *WL; |
69 | typedef struct ev_watcher_time *WT; |
153 | typedef struct ev_watcher_time *WT; |
70 | |
154 | |
71 | static ev_tstamp now, diff; /* monotonic clock */ |
155 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
72 | ev_tstamp ev_now; |
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73 | int ev_method; |
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74 | |
156 | |
75 | static int have_monotonic; /* runtime */ |
157 | #include "ev_win32.c" |
76 | |
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77 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
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78 | static void (*method_modify)(int fd, int oev, int nev); |
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79 | static void (*method_poll)(ev_tstamp timeout); |
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80 | |
158 | |
81 | /*****************************************************************************/ |
159 | /*****************************************************************************/ |
82 | |
160 | |
83 | 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 |
84 | ev_time (void) |
248 | ev_time (void) |
85 | { |
249 | { |
86 | #if HAVE_REALTIME |
250 | #if EV_USE_REALTIME |
87 | struct timespec ts; |
251 | struct timespec ts; |
88 | clock_gettime (CLOCK_REALTIME, &ts); |
252 | clock_gettime (CLOCK_REALTIME, &ts); |
89 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
253 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
90 | #else |
254 | #else |
91 | struct timeval tv; |
255 | struct timeval tv; |
92 | gettimeofday (&tv, 0); |
256 | gettimeofday (&tv, 0); |
93 | return tv.tv_sec + tv.tv_usec * 1e-6; |
257 | return tv.tv_sec + tv.tv_usec * 1e-6; |
94 | #endif |
258 | #endif |
95 | } |
259 | } |
96 | |
260 | |
97 | static ev_tstamp |
261 | inline ev_tstamp |
98 | get_clock (void) |
262 | get_clock (void) |
99 | { |
263 | { |
100 | #if HAVE_MONOTONIC |
264 | #if EV_USE_MONOTONIC |
101 | if (have_monotonic) |
265 | if (expect_true (have_monotonic)) |
102 | { |
266 | { |
103 | struct timespec ts; |
267 | struct timespec ts; |
104 | clock_gettime (CLOCK_MONOTONIC, &ts); |
268 | clock_gettime (CLOCK_MONOTONIC, &ts); |
105 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
269 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
106 | } |
270 | } |
107 | #endif |
271 | #endif |
108 | |
272 | |
109 | return ev_time (); |
273 | return ev_time (); |
110 | } |
274 | } |
111 | |
275 | |
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276 | #if EV_MULTIPLICITY |
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277 | ev_tstamp |
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278 | ev_now (EV_P) |
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279 | { |
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280 | return ev_rt_now; |
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281 | } |
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282 | #endif |
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283 | |
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284 | #define array_roundsize(type,n) ((n) | 4 & ~3) |
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285 | |
112 | #define array_needsize(base,cur,cnt,init) \ |
286 | #define array_needsize(type,base,cur,cnt,init) \ |
113 | if ((cnt) > cur) \ |
287 | if (expect_false ((cnt) > cur)) \ |
114 | { \ |
288 | { \ |
115 | int newcnt = cur ? cur << 1 : 16; \ |
289 | int newcnt = cur; \ |
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290 | do \ |
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291 | { \ |
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292 | newcnt = array_roundsize (type, newcnt << 1); \ |
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293 | } \ |
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294 | while ((cnt) > newcnt); \ |
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295 | \ |
116 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
296 | base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\ |
117 | init (base + cur, newcnt - cur); \ |
297 | init (base + cur, newcnt - cur); \ |
118 | cur = newcnt; \ |
298 | cur = newcnt; \ |
119 | } |
299 | } |
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300 | |
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301 | #define array_slim(type,stem) \ |
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302 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
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303 | { \ |
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304 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
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305 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
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306 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
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307 | } |
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308 | |
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309 | /* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */ |
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310 | /* bringing us everlasting joy in form of stupid extra macros that are not required in C */ |
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311 | #define array_free_microshit(stem) \ |
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312 | ev_free (stem ## s); stem ## cnt = stem ## max = 0; |
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313 | |
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314 | #define array_free(stem, idx) \ |
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315 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
120 | |
316 | |
121 | /*****************************************************************************/ |
317 | /*****************************************************************************/ |
122 | |
318 | |
123 | typedef struct |
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124 | { |
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125 | struct ev_io *head; |
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126 | unsigned char wev, rev; /* want, received event set */ |
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127 | } ANFD; |
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128 | |
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129 | static ANFD *anfds; |
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130 | static int anfdmax; |
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131 | |
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132 | static int *fdchanges; |
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133 | static int fdchangemax, fdchangecnt; |
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134 | |
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135 | static void |
319 | static void |
136 | anfds_init (ANFD *base, int count) |
320 | anfds_init (ANFD *base, int count) |
137 | { |
321 | { |
138 | while (count--) |
322 | while (count--) |
139 | { |
323 | { |
140 | base->head = 0; |
324 | base->head = 0; |
141 | base->wev = base->rev = EV_NONE; |
325 | base->events = EV_NONE; |
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326 | base->reify = 0; |
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327 | |
142 | ++base; |
328 | ++base; |
143 | } |
329 | } |
144 | } |
330 | } |
145 | |
331 | |
146 | typedef struct |
332 | void |
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333 | ev_feed_event (EV_P_ void *w, int revents) |
147 | { |
334 | { |
148 | W w; |
335 | W w_ = (W)w; |
149 | int events; |
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150 | } ANPENDING; |
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151 | |
336 | |
152 | static ANPENDING *pendings; |
337 | if (w_->pending) |
153 | static int pendingmax, pendingcnt; |
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154 | |
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155 | static void |
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156 | event (W w, int events) |
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157 | { |
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158 | if (w->active) |
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159 | { |
338 | { |
160 | w->pending = ++pendingcnt; |
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161 | array_needsize (pendings, pendingmax, pendingcnt, ); |
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162 | pendings [pendingcnt - 1].w = w; |
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163 | pendings [pendingcnt - 1].events = events; |
339 | pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; |
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340 | return; |
164 | } |
341 | } |
165 | } |
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166 | |
342 | |
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343 | w_->pending = ++pendingcnt [ABSPRI (w_)]; |
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344 | array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void)); |
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345 | pendings [ABSPRI (w_)][w_->pending - 1].w = w_; |
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346 | pendings [ABSPRI (w_)][w_->pending - 1].events = revents; |
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347 | } |
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348 | |
167 | static void |
349 | static void |
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350 | queue_events (EV_P_ W *events, int eventcnt, int type) |
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351 | { |
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352 | int i; |
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353 | |
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354 | for (i = 0; i < eventcnt; ++i) |
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355 | ev_feed_event (EV_A_ events [i], type); |
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356 | } |
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357 | |
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358 | inline void |
168 | fd_event (int fd, int events) |
359 | fd_event (EV_P_ int fd, int revents) |
169 | { |
360 | { |
170 | ANFD *anfd = anfds + fd; |
361 | ANFD *anfd = anfds + fd; |
171 | struct ev_io *w; |
362 | struct ev_io *w; |
172 | |
363 | |
173 | for (w = anfd->head; w; w = w->next) |
364 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
174 | { |
365 | { |
175 | int ev = w->events & events; |
366 | int ev = w->events & revents; |
176 | |
367 | |
177 | if (ev) |
368 | if (ev) |
178 | event ((W)w, ev); |
369 | ev_feed_event (EV_A_ (W)w, ev); |
179 | } |
370 | } |
180 | } |
371 | } |
181 | |
372 | |
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373 | void |
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374 | ev_feed_fd_event (EV_P_ int fd, int revents) |
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375 | { |
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376 | fd_event (EV_A_ fd, revents); |
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377 | } |
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378 | |
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379 | /*****************************************************************************/ |
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380 | |
182 | static void |
381 | static void |
183 | queue_events (W *events, int eventcnt, int type) |
382 | fd_reify (EV_P) |
184 | { |
383 | { |
185 | int i; |
384 | int i; |
186 | |
385 | |
187 | for (i = 0; i < eventcnt; ++i) |
386 | for (i = 0; i < fdchangecnt; ++i) |
188 | event (events [i], type); |
387 | { |
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388 | int fd = fdchanges [i]; |
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389 | ANFD *anfd = anfds + fd; |
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390 | struct ev_io *w; |
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391 | |
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392 | int events = 0; |
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393 | |
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394 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
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395 | events |= w->events; |
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396 | |
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397 | anfd->reify = 0; |
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398 | |
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399 | method_modify (EV_A_ fd, anfd->events, events); |
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400 | anfd->events = events; |
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401 | } |
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402 | |
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403 | fdchangecnt = 0; |
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404 | } |
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405 | |
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406 | static void |
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407 | fd_change (EV_P_ int fd) |
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408 | { |
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409 | if (anfds [fd].reify) |
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410 | return; |
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411 | |
|
|
412 | anfds [fd].reify = 1; |
|
|
413 | |
|
|
414 | ++fdchangecnt; |
|
|
415 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); |
|
|
416 | fdchanges [fdchangecnt - 1] = fd; |
|
|
417 | } |
|
|
418 | |
|
|
419 | static void |
|
|
420 | fd_kill (EV_P_ int fd) |
|
|
421 | { |
|
|
422 | struct ev_io *w; |
|
|
423 | |
|
|
424 | while ((w = (struct ev_io *)anfds [fd].head)) |
|
|
425 | { |
|
|
426 | ev_io_stop (EV_A_ w); |
|
|
427 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
428 | } |
|
|
429 | } |
|
|
430 | |
|
|
431 | static int |
|
|
432 | fd_valid (int fd) |
|
|
433 | { |
|
|
434 | #ifdef WIN32 |
|
|
435 | return !!win32_get_osfhandle (fd); |
|
|
436 | #else |
|
|
437 | return fcntl (fd, F_GETFD) != -1; |
|
|
438 | #endif |
189 | } |
439 | } |
190 | |
440 | |
191 | /* called on EBADF to verify fds */ |
441 | /* called on EBADF to verify fds */ |
192 | static void |
442 | static void |
193 | fd_recheck () |
443 | fd_ebadf (EV_P) |
194 | { |
444 | { |
195 | int fd; |
445 | int fd; |
196 | |
446 | |
197 | for (fd = 0; fd < anfdmax; ++fd) |
447 | for (fd = 0; fd < anfdmax; ++fd) |
198 | if (anfds [fd].wev) |
448 | if (anfds [fd].events) |
199 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
449 | if (!fd_valid (fd) == -1 && errno == EBADF) |
200 | while (anfds [fd].head) |
450 | fd_kill (EV_A_ fd); |
201 | evio_stop (anfds [fd].head); |
451 | } |
|
|
452 | |
|
|
453 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
454 | static void |
|
|
455 | fd_enomem (EV_P) |
|
|
456 | { |
|
|
457 | int fd; |
|
|
458 | |
|
|
459 | for (fd = anfdmax; fd--; ) |
|
|
460 | if (anfds [fd].events) |
|
|
461 | { |
|
|
462 | fd_kill (EV_A_ fd); |
|
|
463 | return; |
|
|
464 | } |
|
|
465 | } |
|
|
466 | |
|
|
467 | /* usually called after fork if method needs to re-arm all fds from scratch */ |
|
|
468 | static void |
|
|
469 | fd_rearm_all (EV_P) |
|
|
470 | { |
|
|
471 | int fd; |
|
|
472 | |
|
|
473 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
474 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
475 | if (anfds [fd].events) |
|
|
476 | { |
|
|
477 | anfds [fd].events = 0; |
|
|
478 | fd_change (EV_A_ fd); |
|
|
479 | } |
202 | } |
480 | } |
203 | |
481 | |
204 | /*****************************************************************************/ |
482 | /*****************************************************************************/ |
205 | |
483 | |
206 | static struct ev_timer **timers; |
|
|
207 | static int timermax, timercnt; |
|
|
208 | |
|
|
209 | static struct ev_periodic **periodics; |
|
|
210 | static int periodicmax, periodiccnt; |
|
|
211 | |
|
|
212 | static void |
484 | static void |
213 | upheap (WT *timers, int k) |
485 | upheap (WT *heap, int k) |
214 | { |
486 | { |
215 | WT w = timers [k]; |
487 | WT w = heap [k]; |
216 | |
488 | |
217 | while (k && timers [k >> 1]->at > w->at) |
489 | while (k && heap [k >> 1]->at > w->at) |
218 | { |
490 | { |
219 | timers [k] = timers [k >> 1]; |
491 | heap [k] = heap [k >> 1]; |
220 | timers [k]->active = k + 1; |
492 | ((W)heap [k])->active = k + 1; |
221 | k >>= 1; |
493 | k >>= 1; |
222 | } |
494 | } |
223 | |
495 | |
224 | timers [k] = w; |
496 | heap [k] = w; |
225 | timers [k]->active = k + 1; |
497 | ((W)heap [k])->active = k + 1; |
226 | |
498 | |
227 | } |
499 | } |
228 | |
500 | |
229 | static void |
501 | static void |
230 | downheap (WT *timers, int N, int k) |
502 | downheap (WT *heap, int N, int k) |
231 | { |
503 | { |
232 | WT w = timers [k]; |
504 | WT w = heap [k]; |
233 | |
505 | |
234 | while (k < (N >> 1)) |
506 | while (k < (N >> 1)) |
235 | { |
507 | { |
236 | int j = k << 1; |
508 | int j = k << 1; |
237 | |
509 | |
238 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
510 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
239 | ++j; |
511 | ++j; |
240 | |
512 | |
241 | if (w->at <= timers [j]->at) |
513 | if (w->at <= heap [j]->at) |
242 | break; |
514 | break; |
243 | |
515 | |
244 | timers [k] = timers [j]; |
516 | heap [k] = heap [j]; |
245 | timers [k]->active = k + 1; |
517 | ((W)heap [k])->active = k + 1; |
246 | k = j; |
518 | k = j; |
247 | } |
519 | } |
248 | |
520 | |
249 | timers [k] = w; |
521 | heap [k] = w; |
250 | timers [k]->active = k + 1; |
522 | ((W)heap [k])->active = k + 1; |
|
|
523 | } |
|
|
524 | |
|
|
525 | inline void |
|
|
526 | adjustheap (WT *heap, int N, int k, ev_tstamp at) |
|
|
527 | { |
|
|
528 | ev_tstamp old_at = heap [k]->at; |
|
|
529 | heap [k]->at = at; |
|
|
530 | |
|
|
531 | if (old_at < at) |
|
|
532 | downheap (heap, N, k); |
|
|
533 | else |
|
|
534 | upheap (heap, k); |
251 | } |
535 | } |
252 | |
536 | |
253 | /*****************************************************************************/ |
537 | /*****************************************************************************/ |
254 | |
538 | |
255 | typedef struct |
539 | typedef struct |
256 | { |
540 | { |
257 | struct ev_signal *head; |
541 | WL head; |
258 | sig_atomic_t gotsig; |
542 | sig_atomic_t volatile gotsig; |
259 | } ANSIG; |
543 | } ANSIG; |
260 | |
544 | |
261 | static ANSIG *signals; |
545 | static ANSIG *signals; |
262 | static int signalmax; |
546 | static int signalmax; |
263 | |
547 | |
264 | static int sigpipe [2]; |
548 | static int sigpipe [2]; |
265 | static sig_atomic_t gotsig; |
549 | static sig_atomic_t volatile gotsig; |
266 | static struct ev_io sigev; |
550 | static struct ev_io sigev; |
267 | |
551 | |
268 | static void |
552 | static void |
269 | signals_init (ANSIG *base, int count) |
553 | signals_init (ANSIG *base, int count) |
270 | { |
554 | { |
271 | while (count--) |
555 | while (count--) |
272 | { |
556 | { |
273 | base->head = 0; |
557 | base->head = 0; |
274 | base->gotsig = 0; |
558 | base->gotsig = 0; |
|
|
559 | |
275 | ++base; |
560 | ++base; |
276 | } |
561 | } |
277 | } |
562 | } |
278 | |
563 | |
279 | static void |
564 | static void |
280 | sighandler (int signum) |
565 | sighandler (int signum) |
281 | { |
566 | { |
|
|
567 | #if WIN32 |
|
|
568 | signal (signum, sighandler); |
|
|
569 | #endif |
|
|
570 | |
282 | signals [signum - 1].gotsig = 1; |
571 | signals [signum - 1].gotsig = 1; |
283 | |
572 | |
284 | if (!gotsig) |
573 | if (!gotsig) |
285 | { |
574 | { |
|
|
575 | int old_errno = errno; |
286 | gotsig = 1; |
576 | gotsig = 1; |
|
|
577 | #ifdef WIN32 |
|
|
578 | send (sigpipe [1], &signum, 1, MSG_DONTWAIT); |
|
|
579 | #else |
287 | write (sigpipe [1], &gotsig, 1); |
580 | write (sigpipe [1], &signum, 1); |
|
|
581 | #endif |
|
|
582 | errno = old_errno; |
288 | } |
583 | } |
289 | } |
584 | } |
290 | |
585 | |
|
|
586 | void |
|
|
587 | ev_feed_signal_event (EV_P_ int signum) |
|
|
588 | { |
|
|
589 | WL w; |
|
|
590 | |
|
|
591 | #if EV_MULTIPLICITY |
|
|
592 | assert (("feeding signal events is only supported in the default loop", loop == default_loop)); |
|
|
593 | #endif |
|
|
594 | |
|
|
595 | --signum; |
|
|
596 | |
|
|
597 | if (signum < 0 || signum >= signalmax) |
|
|
598 | return; |
|
|
599 | |
|
|
600 | signals [signum].gotsig = 0; |
|
|
601 | |
|
|
602 | for (w = signals [signum].head; w; w = w->next) |
|
|
603 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
604 | } |
|
|
605 | |
291 | static void |
606 | static void |
292 | sigcb (struct ev_io *iow, int revents) |
607 | sigcb (EV_P_ struct ev_io *iow, int revents) |
293 | { |
608 | { |
294 | struct ev_signal *w; |
|
|
295 | int sig; |
609 | int signum; |
296 | |
610 | |
|
|
611 | #ifdef WIN32 |
|
|
612 | recv (sigpipe [0], &revents, 1, MSG_DONTWAIT); |
|
|
613 | #else |
|
|
614 | read (sigpipe [0], &revents, 1); |
|
|
615 | #endif |
297 | gotsig = 0; |
616 | gotsig = 0; |
298 | read (sigpipe [0], &revents, 1); |
|
|
299 | |
617 | |
300 | for (sig = signalmax; sig--; ) |
618 | for (signum = signalmax; signum--; ) |
301 | if (signals [sig].gotsig) |
619 | if (signals [signum].gotsig) |
302 | { |
620 | ev_feed_signal_event (EV_A_ signum + 1); |
303 | signals [sig].gotsig = 0; |
|
|
304 | |
|
|
305 | for (w = signals [sig].head; w; w = w->next) |
|
|
306 | event ((W)w, EV_SIGNAL); |
|
|
307 | } |
|
|
308 | } |
621 | } |
309 | |
622 | |
310 | static void |
623 | static void |
311 | siginit (void) |
624 | siginit (EV_P) |
312 | { |
625 | { |
|
|
626 | #ifndef WIN32 |
313 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
627 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
314 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
628 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
315 | |
629 | |
316 | /* rather than sort out wether we really need nb, set it */ |
630 | /* rather than sort out wether we really need nb, set it */ |
317 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
631 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
318 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
632 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
633 | #endif |
319 | |
634 | |
320 | evio_set (&sigev, sigpipe [0], EV_READ); |
635 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
321 | evio_start (&sigev); |
636 | ev_io_start (EV_A_ &sigev); |
|
|
637 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
322 | } |
638 | } |
323 | |
639 | |
324 | /*****************************************************************************/ |
640 | /*****************************************************************************/ |
325 | |
641 | |
326 | static struct ev_idle **idles; |
642 | static struct ev_child *childs [PID_HASHSIZE]; |
327 | static int idlemax, idlecnt; |
|
|
328 | |
643 | |
329 | static struct ev_check **checks; |
644 | #ifndef WIN32 |
330 | static int checkmax, checkcnt; |
645 | |
|
|
646 | static struct ev_signal childev; |
|
|
647 | |
|
|
648 | #ifndef WCONTINUED |
|
|
649 | # define WCONTINUED 0 |
|
|
650 | #endif |
|
|
651 | |
|
|
652 | static void |
|
|
653 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
|
|
654 | { |
|
|
655 | struct ev_child *w; |
|
|
656 | |
|
|
657 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
658 | if (w->pid == pid || !w->pid) |
|
|
659 | { |
|
|
660 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
|
|
661 | w->rpid = pid; |
|
|
662 | w->rstatus = status; |
|
|
663 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
664 | } |
|
|
665 | } |
|
|
666 | |
|
|
667 | static void |
|
|
668 | childcb (EV_P_ struct ev_signal *sw, int revents) |
|
|
669 | { |
|
|
670 | int pid, status; |
|
|
671 | |
|
|
672 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
|
|
673 | { |
|
|
674 | /* make sure we are called again until all childs have been reaped */ |
|
|
675 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
676 | |
|
|
677 | child_reap (EV_A_ sw, pid, pid, status); |
|
|
678 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
|
|
679 | } |
|
|
680 | } |
|
|
681 | |
|
|
682 | #endif |
331 | |
683 | |
332 | /*****************************************************************************/ |
684 | /*****************************************************************************/ |
333 | |
685 | |
|
|
686 | #if EV_USE_KQUEUE |
|
|
687 | # include "ev_kqueue.c" |
|
|
688 | #endif |
334 | #if HAVE_EPOLL |
689 | #if EV_USE_EPOLL |
335 | # include "ev_epoll.c" |
690 | # include "ev_epoll.c" |
336 | #endif |
691 | #endif |
|
|
692 | #if EV_USE_POLL |
|
|
693 | # include "ev_poll.c" |
|
|
694 | #endif |
337 | #if HAVE_SELECT |
695 | #if EV_USE_SELECT |
338 | # include "ev_select.c" |
696 | # include "ev_select.c" |
339 | #endif |
697 | #endif |
340 | |
698 | |
341 | int ev_init (int flags) |
699 | int |
|
|
700 | ev_version_major (void) |
342 | { |
701 | { |
|
|
702 | return EV_VERSION_MAJOR; |
|
|
703 | } |
|
|
704 | |
|
|
705 | int |
|
|
706 | ev_version_minor (void) |
|
|
707 | { |
|
|
708 | return EV_VERSION_MINOR; |
|
|
709 | } |
|
|
710 | |
|
|
711 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
712 | static int |
|
|
713 | enable_secure (void) |
|
|
714 | { |
|
|
715 | #ifdef WIN32 |
|
|
716 | return 0; |
|
|
717 | #else |
|
|
718 | return getuid () != geteuid () |
|
|
719 | || getgid () != getegid (); |
|
|
720 | #endif |
|
|
721 | } |
|
|
722 | |
|
|
723 | int |
|
|
724 | ev_method (EV_P) |
|
|
725 | { |
|
|
726 | return method; |
|
|
727 | } |
|
|
728 | |
|
|
729 | static void |
|
|
730 | loop_init (EV_P_ int methods) |
|
|
731 | { |
|
|
732 | if (!method) |
|
|
733 | { |
343 | #if HAVE_MONOTONIC |
734 | #if EV_USE_MONOTONIC |
344 | { |
735 | { |
345 | struct timespec ts; |
736 | struct timespec ts; |
346 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
737 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
347 | have_monotonic = 1; |
738 | have_monotonic = 1; |
348 | } |
739 | } |
349 | #endif |
740 | #endif |
350 | |
741 | |
351 | ev_now = ev_time (); |
742 | ev_rt_now = ev_time (); |
352 | now = get_clock (); |
743 | mn_now = get_clock (); |
353 | diff = ev_now - now; |
744 | now_floor = mn_now; |
|
|
745 | rtmn_diff = ev_rt_now - mn_now; |
354 | |
746 | |
355 | if (pipe (sigpipe)) |
747 | if (methods == EVMETHOD_AUTO) |
356 | return 0; |
748 | if (!enable_secure () && getenv ("LIBEV_METHODS")) |
|
|
749 | methods = atoi (getenv ("LIBEV_METHODS")); |
|
|
750 | else |
|
|
751 | methods = EVMETHOD_ANY; |
357 | |
752 | |
358 | ev_method = EVMETHOD_NONE; |
753 | method = 0; |
|
|
754 | #if EV_USE_WIN32 |
|
|
755 | if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); |
|
|
756 | #endif |
|
|
757 | #if EV_USE_KQUEUE |
|
|
758 | if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); |
|
|
759 | #endif |
359 | #if HAVE_EPOLL |
760 | #if EV_USE_EPOLL |
360 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
761 | if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); |
361 | #endif |
762 | #endif |
|
|
763 | #if EV_USE_POLL |
|
|
764 | if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); |
|
|
765 | #endif |
362 | #if HAVE_SELECT |
766 | #if EV_USE_SELECT |
363 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
767 | if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); |
364 | #endif |
768 | #endif |
365 | |
769 | |
366 | if (ev_method) |
|
|
367 | { |
|
|
368 | evw_init (&sigev, sigcb); |
770 | ev_init (&sigev, sigcb); |
|
|
771 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
772 | } |
|
|
773 | } |
|
|
774 | |
|
|
775 | void |
|
|
776 | loop_destroy (EV_P) |
|
|
777 | { |
|
|
778 | int i; |
|
|
779 | |
|
|
780 | #if EV_USE_WIN32 |
|
|
781 | if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); |
|
|
782 | #endif |
|
|
783 | #if EV_USE_KQUEUE |
|
|
784 | if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); |
|
|
785 | #endif |
|
|
786 | #if EV_USE_EPOLL |
|
|
787 | if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); |
|
|
788 | #endif |
|
|
789 | #if EV_USE_POLL |
|
|
790 | if (method == EVMETHOD_POLL ) poll_destroy (EV_A); |
|
|
791 | #endif |
|
|
792 | #if EV_USE_SELECT |
|
|
793 | if (method == EVMETHOD_SELECT) select_destroy (EV_A); |
|
|
794 | #endif |
|
|
795 | |
|
|
796 | for (i = NUMPRI; i--; ) |
|
|
797 | array_free (pending, [i]); |
|
|
798 | |
|
|
799 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
800 | array_free_microshit (fdchange); |
|
|
801 | array_free_microshit (timer); |
|
|
802 | array_free_microshit (periodic); |
|
|
803 | array_free_microshit (idle); |
|
|
804 | array_free_microshit (prepare); |
|
|
805 | array_free_microshit (check); |
|
|
806 | |
|
|
807 | method = 0; |
|
|
808 | } |
|
|
809 | |
|
|
810 | static void |
|
|
811 | loop_fork (EV_P) |
|
|
812 | { |
|
|
813 | #if EV_USE_EPOLL |
|
|
814 | if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); |
|
|
815 | #endif |
|
|
816 | #if EV_USE_KQUEUE |
|
|
817 | if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); |
|
|
818 | #endif |
|
|
819 | |
|
|
820 | if (ev_is_active (&sigev)) |
|
|
821 | { |
|
|
822 | /* default loop */ |
|
|
823 | |
|
|
824 | ev_ref (EV_A); |
|
|
825 | ev_io_stop (EV_A_ &sigev); |
|
|
826 | close (sigpipe [0]); |
|
|
827 | close (sigpipe [1]); |
|
|
828 | |
|
|
829 | while (pipe (sigpipe)) |
|
|
830 | syserr ("(libev) error creating pipe"); |
|
|
831 | |
369 | siginit (); |
832 | siginit (EV_A); |
|
|
833 | } |
|
|
834 | |
|
|
835 | postfork = 0; |
|
|
836 | } |
|
|
837 | |
|
|
838 | #if EV_MULTIPLICITY |
|
|
839 | struct ev_loop * |
|
|
840 | ev_loop_new (int methods) |
|
|
841 | { |
|
|
842 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
843 | |
|
|
844 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
845 | |
|
|
846 | loop_init (EV_A_ methods); |
|
|
847 | |
|
|
848 | if (ev_method (EV_A)) |
|
|
849 | return loop; |
|
|
850 | |
|
|
851 | return 0; |
|
|
852 | } |
|
|
853 | |
|
|
854 | void |
|
|
855 | ev_loop_destroy (EV_P) |
|
|
856 | { |
|
|
857 | loop_destroy (EV_A); |
|
|
858 | ev_free (loop); |
|
|
859 | } |
|
|
860 | |
|
|
861 | void |
|
|
862 | ev_loop_fork (EV_P) |
|
|
863 | { |
|
|
864 | postfork = 1; |
|
|
865 | } |
|
|
866 | |
|
|
867 | #endif |
|
|
868 | |
|
|
869 | #if EV_MULTIPLICITY |
|
|
870 | struct ev_loop * |
|
|
871 | #else |
|
|
872 | int |
|
|
873 | #endif |
|
|
874 | ev_default_loop (int methods) |
|
|
875 | { |
|
|
876 | if (sigpipe [0] == sigpipe [1]) |
|
|
877 | if (pipe (sigpipe)) |
|
|
878 | return 0; |
|
|
879 | |
|
|
880 | if (!default_loop) |
370 | } |
881 | { |
|
|
882 | #if EV_MULTIPLICITY |
|
|
883 | struct ev_loop *loop = default_loop = &default_loop_struct; |
|
|
884 | #else |
|
|
885 | default_loop = 1; |
|
|
886 | #endif |
371 | |
887 | |
372 | return ev_method; |
888 | loop_init (EV_A_ methods); |
|
|
889 | |
|
|
890 | if (ev_method (EV_A)) |
|
|
891 | { |
|
|
892 | siginit (EV_A); |
|
|
893 | |
|
|
894 | #ifndef WIN32 |
|
|
895 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
896 | ev_set_priority (&childev, EV_MAXPRI); |
|
|
897 | ev_signal_start (EV_A_ &childev); |
|
|
898 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
899 | #endif |
|
|
900 | } |
|
|
901 | else |
|
|
902 | default_loop = 0; |
|
|
903 | } |
|
|
904 | |
|
|
905 | return default_loop; |
|
|
906 | } |
|
|
907 | |
|
|
908 | void |
|
|
909 | ev_default_destroy (void) |
|
|
910 | { |
|
|
911 | #if EV_MULTIPLICITY |
|
|
912 | struct ev_loop *loop = default_loop; |
|
|
913 | #endif |
|
|
914 | |
|
|
915 | #ifndef WIN32 |
|
|
916 | ev_ref (EV_A); /* child watcher */ |
|
|
917 | ev_signal_stop (EV_A_ &childev); |
|
|
918 | #endif |
|
|
919 | |
|
|
920 | ev_ref (EV_A); /* signal watcher */ |
|
|
921 | ev_io_stop (EV_A_ &sigev); |
|
|
922 | |
|
|
923 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
924 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
925 | |
|
|
926 | loop_destroy (EV_A); |
|
|
927 | } |
|
|
928 | |
|
|
929 | void |
|
|
930 | ev_default_fork (void) |
|
|
931 | { |
|
|
932 | #if EV_MULTIPLICITY |
|
|
933 | struct ev_loop *loop = default_loop; |
|
|
934 | #endif |
|
|
935 | |
|
|
936 | if (method) |
|
|
937 | postfork = 1; |
373 | } |
938 | } |
374 | |
939 | |
375 | /*****************************************************************************/ |
940 | /*****************************************************************************/ |
376 | |
941 | |
377 | void ev_prefork (void) |
|
|
378 | { |
|
|
379 | /* nop */ |
|
|
380 | } |
|
|
381 | |
|
|
382 | void ev_postfork_parent (void) |
|
|
383 | { |
|
|
384 | /* nop */ |
|
|
385 | } |
|
|
386 | |
|
|
387 | void ev_postfork_child (void) |
|
|
388 | { |
|
|
389 | #if HAVE_EPOLL |
|
|
390 | if (ev_method == EVMETHOD_EPOLL) |
|
|
391 | epoll_postfork_child (); |
|
|
392 | #endif |
|
|
393 | |
|
|
394 | evio_stop (&sigev); |
|
|
395 | close (sigpipe [0]); |
|
|
396 | close (sigpipe [1]); |
|
|
397 | pipe (sigpipe); |
|
|
398 | siginit (); |
|
|
399 | } |
|
|
400 | |
|
|
401 | /*****************************************************************************/ |
|
|
402 | |
|
|
403 | static void |
942 | static int |
404 | fd_reify (void) |
943 | any_pending (EV_P) |
405 | { |
944 | { |
406 | int i; |
945 | int pri; |
407 | |
946 | |
408 | for (i = 0; i < fdchangecnt; ++i) |
947 | for (pri = NUMPRI; pri--; ) |
409 | { |
948 | if (pendingcnt [pri]) |
410 | int fd = fdchanges [i]; |
949 | return 1; |
411 | ANFD *anfd = anfds + fd; |
|
|
412 | struct ev_io *w; |
|
|
413 | |
950 | |
414 | int wev = 0; |
951 | return 0; |
415 | |
|
|
416 | for (w = anfd->head; w; w = w->next) |
|
|
417 | wev |= w->events; |
|
|
418 | |
|
|
419 | if (anfd->wev != wev) |
|
|
420 | { |
|
|
421 | method_modify (fd, anfd->wev, wev); |
|
|
422 | anfd->wev = wev; |
|
|
423 | } |
|
|
424 | } |
|
|
425 | |
|
|
426 | fdchangecnt = 0; |
|
|
427 | } |
952 | } |
428 | |
953 | |
429 | static void |
954 | static void |
430 | call_pending () |
955 | call_pending (EV_P) |
431 | { |
956 | { |
|
|
957 | int pri; |
|
|
958 | |
|
|
959 | for (pri = NUMPRI; pri--; ) |
432 | while (pendingcnt) |
960 | while (pendingcnt [pri]) |
433 | { |
961 | { |
434 | ANPENDING *p = pendings + --pendingcnt; |
962 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
435 | |
963 | |
436 | if (p->w) |
964 | if (p->w) |
437 | { |
965 | { |
438 | p->w->pending = 0; |
966 | p->w->pending = 0; |
439 | p->w->cb (p->w, p->events); |
967 | EV_CB_INVOKE (p->w, p->events); |
440 | } |
968 | } |
441 | } |
969 | } |
442 | } |
970 | } |
443 | |
971 | |
444 | static void |
972 | static void |
445 | timers_reify () |
973 | timers_reify (EV_P) |
446 | { |
974 | { |
447 | while (timercnt && timers [0]->at <= now) |
975 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
448 | { |
976 | { |
449 | struct ev_timer *w = timers [0]; |
977 | struct ev_timer *w = timers [0]; |
450 | |
978 | |
451 | event ((W)w, EV_TIMEOUT); |
979 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
452 | |
980 | |
453 | /* first reschedule or stop timer */ |
981 | /* first reschedule or stop timer */ |
454 | if (w->repeat) |
982 | if (w->repeat) |
455 | { |
983 | { |
|
|
984 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
456 | w->at = now + w->repeat; |
985 | ((WT)w)->at = mn_now + w->repeat; |
457 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
|
|
458 | downheap ((WT *)timers, timercnt, 0); |
986 | downheap ((WT *)timers, timercnt, 0); |
459 | } |
987 | } |
460 | else |
988 | else |
461 | evtimer_stop (w); /* nonrepeating: stop timer */ |
989 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
462 | } |
|
|
463 | } |
|
|
464 | |
990 | |
|
|
991 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
992 | } |
|
|
993 | } |
|
|
994 | |
465 | static void |
995 | static void |
466 | periodics_reify () |
996 | periodics_reify (EV_P) |
467 | { |
997 | { |
468 | while (periodiccnt && periodics [0]->at <= ev_now) |
998 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
469 | { |
999 | { |
470 | struct ev_periodic *w = periodics [0]; |
1000 | struct ev_periodic *w = periodics [0]; |
471 | |
1001 | |
|
|
1002 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
|
|
1003 | |
472 | /* first reschedule or stop timer */ |
1004 | /* first reschedule or stop timer */ |
473 | if (w->interval) |
1005 | if (w->reschedule_cb) |
474 | { |
1006 | { |
|
|
1007 | ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); |
|
|
1008 | |
|
|
1009 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
|
|
1010 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1011 | } |
|
|
1012 | else if (w->interval) |
|
|
1013 | { |
475 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
1014 | ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
476 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
1015 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
477 | downheap ((WT *)periodics, periodiccnt, 0); |
1016 | downheap ((WT *)periodics, periodiccnt, 0); |
478 | } |
1017 | } |
479 | else |
1018 | else |
480 | evperiodic_stop (w); /* nonrepeating: stop timer */ |
1019 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
481 | |
1020 | |
482 | event ((W)w, EV_TIMEOUT); |
1021 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
483 | } |
1022 | } |
484 | } |
1023 | } |
485 | |
1024 | |
486 | static void |
1025 | static void |
487 | periodics_reschedule (ev_tstamp diff) |
1026 | periodics_reschedule (EV_P) |
488 | { |
1027 | { |
489 | int i; |
1028 | int i; |
490 | |
1029 | |
491 | /* adjust periodics after time jump */ |
1030 | /* adjust periodics after time jump */ |
492 | for (i = 0; i < periodiccnt; ++i) |
1031 | for (i = 0; i < periodiccnt; ++i) |
493 | { |
1032 | { |
494 | struct ev_periodic *w = periodics [i]; |
1033 | struct ev_periodic *w = periodics [i]; |
495 | |
1034 | |
|
|
1035 | if (w->reschedule_cb) |
|
|
1036 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
496 | if (w->interval) |
1037 | else if (w->interval) |
|
|
1038 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1039 | } |
|
|
1040 | |
|
|
1041 | /* now rebuild the heap */ |
|
|
1042 | for (i = periodiccnt >> 1; i--; ) |
|
|
1043 | downheap ((WT *)periodics, periodiccnt, i); |
|
|
1044 | } |
|
|
1045 | |
|
|
1046 | inline int |
|
|
1047 | time_update_monotonic (EV_P) |
|
|
1048 | { |
|
|
1049 | mn_now = get_clock (); |
|
|
1050 | |
|
|
1051 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
1052 | { |
|
|
1053 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1054 | return 0; |
|
|
1055 | } |
|
|
1056 | else |
|
|
1057 | { |
|
|
1058 | now_floor = mn_now; |
|
|
1059 | ev_rt_now = ev_time (); |
|
|
1060 | return 1; |
|
|
1061 | } |
|
|
1062 | } |
|
|
1063 | |
|
|
1064 | static void |
|
|
1065 | time_update (EV_P) |
|
|
1066 | { |
|
|
1067 | int i; |
|
|
1068 | |
|
|
1069 | #if EV_USE_MONOTONIC |
|
|
1070 | if (expect_true (have_monotonic)) |
|
|
1071 | { |
|
|
1072 | if (time_update_monotonic (EV_A)) |
497 | { |
1073 | { |
498 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
1074 | ev_tstamp odiff = rtmn_diff; |
499 | |
1075 | |
500 | if (fabs (diff) >= 1e-4) |
1076 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
501 | { |
1077 | { |
502 | evperiodic_stop (w); |
1078 | rtmn_diff = ev_rt_now - mn_now; |
503 | evperiodic_start (w); |
|
|
504 | |
1079 | |
505 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
1080 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
|
|
1081 | return; /* all is well */ |
|
|
1082 | |
|
|
1083 | ev_rt_now = ev_time (); |
|
|
1084 | mn_now = get_clock (); |
|
|
1085 | now_floor = mn_now; |
506 | } |
1086 | } |
|
|
1087 | |
|
|
1088 | periodics_reschedule (EV_A); |
|
|
1089 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1090 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
507 | } |
1091 | } |
508 | } |
1092 | } |
509 | } |
1093 | else |
510 | |
1094 | #endif |
511 | static void |
1095 | { |
512 | time_update () |
|
|
513 | { |
|
|
514 | int i; |
|
|
515 | |
|
|
516 | ev_now = ev_time (); |
1096 | ev_rt_now = ev_time (); |
517 | |
1097 | |
518 | if (have_monotonic) |
1098 | if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
519 | { |
|
|
520 | ev_tstamp odiff = diff; |
|
|
521 | |
|
|
522 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
523 | { |
1099 | { |
524 | now = get_clock (); |
|
|
525 | diff = ev_now - now; |
|
|
526 | |
|
|
527 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
|
|
528 | return; /* all is well */ |
|
|
529 | |
|
|
530 | ev_now = ev_time (); |
|
|
531 | } |
|
|
532 | |
|
|
533 | periodics_reschedule (diff - odiff); |
|
|
534 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
535 | } |
|
|
536 | else |
|
|
537 | { |
|
|
538 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
|
|
539 | { |
|
|
540 | periodics_reschedule (ev_now - now); |
1100 | periodics_reschedule (EV_A); |
541 | |
1101 | |
542 | /* adjust timers. this is easy, as the offset is the same for all */ |
1102 | /* adjust timers. this is easy, as the offset is the same for all */ |
543 | for (i = 0; i < timercnt; ++i) |
1103 | for (i = 0; i < timercnt; ++i) |
544 | timers [i]->at += diff; |
1104 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
545 | } |
1105 | } |
546 | |
1106 | |
547 | now = ev_now; |
1107 | mn_now = ev_rt_now; |
548 | } |
1108 | } |
549 | } |
1109 | } |
550 | |
1110 | |
551 | int ev_loop_done; |
1111 | void |
|
|
1112 | ev_ref (EV_P) |
|
|
1113 | { |
|
|
1114 | ++activecnt; |
|
|
1115 | } |
552 | |
1116 | |
|
|
1117 | void |
|
|
1118 | ev_unref (EV_P) |
|
|
1119 | { |
|
|
1120 | --activecnt; |
|
|
1121 | } |
|
|
1122 | |
|
|
1123 | static int loop_done; |
|
|
1124 | |
|
|
1125 | void |
553 | void ev_loop (int flags) |
1126 | ev_loop (EV_P_ int flags) |
554 | { |
1127 | { |
555 | double block; |
1128 | double block; |
556 | ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0; |
1129 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
557 | |
|
|
558 | if (checkcnt) |
|
|
559 | { |
|
|
560 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
|
|
561 | call_pending (); |
|
|
562 | } |
|
|
563 | |
1130 | |
564 | do |
1131 | do |
565 | { |
1132 | { |
|
|
1133 | /* queue check watchers (and execute them) */ |
|
|
1134 | if (expect_false (preparecnt)) |
|
|
1135 | { |
|
|
1136 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
|
|
1137 | call_pending (EV_A); |
|
|
1138 | } |
|
|
1139 | |
|
|
1140 | /* we might have forked, so reify kernel state if necessary */ |
|
|
1141 | if (expect_false (postfork)) |
|
|
1142 | loop_fork (EV_A); |
|
|
1143 | |
566 | /* update fd-related kernel structures */ |
1144 | /* update fd-related kernel structures */ |
567 | fd_reify (); |
1145 | fd_reify (EV_A); |
568 | |
1146 | |
569 | /* calculate blocking time */ |
1147 | /* calculate blocking time */ |
570 | |
1148 | |
571 | /* we only need this for !monotonic clock, but as we always have timers, we just calculate it every time */ |
1149 | /* we only need this for !monotonic clock or timers, but as we basically |
|
|
1150 | always have timers, we just calculate it always */ |
|
|
1151 | #if EV_USE_MONOTONIC |
|
|
1152 | if (expect_true (have_monotonic)) |
|
|
1153 | time_update_monotonic (EV_A); |
|
|
1154 | else |
|
|
1155 | #endif |
|
|
1156 | { |
572 | ev_now = ev_time (); |
1157 | ev_rt_now = ev_time (); |
|
|
1158 | mn_now = ev_rt_now; |
|
|
1159 | } |
573 | |
1160 | |
574 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
1161 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
575 | block = 0.; |
1162 | block = 0.; |
576 | else |
1163 | else |
577 | { |
1164 | { |
578 | block = MAX_BLOCKTIME; |
1165 | block = MAX_BLOCKTIME; |
579 | |
1166 | |
580 | if (timercnt) |
1167 | if (timercnt) |
581 | { |
1168 | { |
582 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
1169 | ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; |
583 | if (block > to) block = to; |
1170 | if (block > to) block = to; |
584 | } |
1171 | } |
585 | |
1172 | |
586 | if (periodiccnt) |
1173 | if (periodiccnt) |
587 | { |
1174 | { |
588 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
1175 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; |
589 | if (block > to) block = to; |
1176 | if (block > to) block = to; |
590 | } |
1177 | } |
591 | |
1178 | |
592 | if (block < 0.) block = 0.; |
1179 | if (block < 0.) block = 0.; |
593 | } |
1180 | } |
594 | |
1181 | |
595 | method_poll (block); |
1182 | method_poll (EV_A_ block); |
596 | |
1183 | |
597 | /* update ev_now, do magic */ |
1184 | /* update ev_rt_now, do magic */ |
598 | time_update (); |
1185 | time_update (EV_A); |
599 | |
1186 | |
600 | /* queue pending timers and reschedule them */ |
1187 | /* queue pending timers and reschedule them */ |
|
|
1188 | timers_reify (EV_A); /* relative timers called last */ |
601 | periodics_reify (); /* absolute timers first */ |
1189 | periodics_reify (EV_A); /* absolute timers called first */ |
602 | timers_reify (); /* relative timers second */ |
|
|
603 | |
1190 | |
604 | /* queue idle watchers unless io or timers are pending */ |
1191 | /* queue idle watchers unless io or timers are pending */ |
605 | if (!pendingcnt) |
1192 | if (idlecnt && !any_pending (EV_A)) |
606 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
1193 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
607 | |
1194 | |
608 | /* queue check and possibly idle watchers */ |
1195 | /* queue check watchers, to be executed first */ |
|
|
1196 | if (checkcnt) |
609 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1197 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
610 | |
1198 | |
611 | call_pending (); |
1199 | call_pending (EV_A); |
612 | } |
1200 | } |
613 | while (!ev_loop_done); |
1201 | while (activecnt && !loop_done); |
614 | |
1202 | |
615 | if (ev_loop_done != 2) |
1203 | if (loop_done != 2) |
616 | ev_loop_done = 0; |
1204 | loop_done = 0; |
|
|
1205 | } |
|
|
1206 | |
|
|
1207 | void |
|
|
1208 | ev_unloop (EV_P_ int how) |
|
|
1209 | { |
|
|
1210 | loop_done = how; |
617 | } |
1211 | } |
618 | |
1212 | |
619 | /*****************************************************************************/ |
1213 | /*****************************************************************************/ |
620 | |
1214 | |
621 | static void |
1215 | inline void |
622 | wlist_add (WL *head, WL elem) |
1216 | wlist_add (WL *head, WL elem) |
623 | { |
1217 | { |
624 | elem->next = *head; |
1218 | elem->next = *head; |
625 | *head = elem; |
1219 | *head = elem; |
626 | } |
1220 | } |
627 | |
1221 | |
628 | static void |
1222 | inline void |
629 | wlist_del (WL *head, WL elem) |
1223 | wlist_del (WL *head, WL elem) |
630 | { |
1224 | { |
631 | while (*head) |
1225 | while (*head) |
632 | { |
1226 | { |
633 | if (*head == elem) |
1227 | if (*head == elem) |
… | |
… | |
638 | |
1232 | |
639 | head = &(*head)->next; |
1233 | head = &(*head)->next; |
640 | } |
1234 | } |
641 | } |
1235 | } |
642 | |
1236 | |
643 | static void |
1237 | inline void |
644 | ev_clear (W w) |
1238 | ev_clear_pending (EV_P_ W w) |
645 | { |
1239 | { |
646 | if (w->pending) |
1240 | if (w->pending) |
647 | { |
1241 | { |
648 | pendings [w->pending - 1].w = 0; |
1242 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
649 | w->pending = 0; |
1243 | w->pending = 0; |
650 | } |
1244 | } |
651 | } |
1245 | } |
652 | |
1246 | |
653 | static void |
1247 | inline void |
654 | ev_start (W w, int active) |
1248 | ev_start (EV_P_ W w, int active) |
655 | { |
1249 | { |
|
|
1250 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1251 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1252 | |
656 | w->active = active; |
1253 | w->active = active; |
|
|
1254 | ev_ref (EV_A); |
657 | } |
1255 | } |
658 | |
1256 | |
659 | static void |
1257 | inline void |
660 | ev_stop (W w) |
1258 | ev_stop (EV_P_ W w) |
661 | { |
1259 | { |
|
|
1260 | ev_unref (EV_A); |
662 | w->active = 0; |
1261 | w->active = 0; |
663 | } |
1262 | } |
664 | |
1263 | |
665 | /*****************************************************************************/ |
1264 | /*****************************************************************************/ |
666 | |
1265 | |
667 | void |
1266 | void |
668 | evio_start (struct ev_io *w) |
1267 | ev_io_start (EV_P_ struct ev_io *w) |
669 | { |
1268 | { |
|
|
1269 | int fd = w->fd; |
|
|
1270 | |
670 | if (ev_is_active (w)) |
1271 | if (ev_is_active (w)) |
671 | return; |
1272 | return; |
672 | |
1273 | |
673 | int fd = w->fd; |
1274 | assert (("ev_io_start called with negative fd", fd >= 0)); |
674 | |
1275 | |
675 | ev_start ((W)w, 1); |
1276 | ev_start (EV_A_ (W)w, 1); |
676 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1277 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
677 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1278 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
678 | |
1279 | |
679 | ++fdchangecnt; |
1280 | fd_change (EV_A_ fd); |
680 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
681 | fdchanges [fdchangecnt - 1] = fd; |
|
|
682 | } |
1281 | } |
683 | |
1282 | |
684 | void |
1283 | void |
685 | evio_stop (struct ev_io *w) |
1284 | ev_io_stop (EV_P_ struct ev_io *w) |
686 | { |
1285 | { |
687 | ev_clear ((W)w); |
1286 | ev_clear_pending (EV_A_ (W)w); |
688 | if (!ev_is_active (w)) |
1287 | if (!ev_is_active (w)) |
689 | return; |
1288 | return; |
690 | |
1289 | |
691 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1290 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
692 | ev_stop ((W)w); |
1291 | ev_stop (EV_A_ (W)w); |
693 | |
1292 | |
694 | ++fdchangecnt; |
1293 | fd_change (EV_A_ w->fd); |
695 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
696 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
697 | } |
1294 | } |
698 | |
1295 | |
699 | void |
1296 | void |
700 | evtimer_start (struct ev_timer *w) |
1297 | ev_timer_start (EV_P_ struct ev_timer *w) |
701 | { |
1298 | { |
702 | if (ev_is_active (w)) |
1299 | if (ev_is_active (w)) |
703 | return; |
1300 | return; |
704 | |
1301 | |
705 | w->at += now; |
1302 | ((WT)w)->at += mn_now; |
706 | |
1303 | |
707 | assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); |
1304 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
708 | |
1305 | |
709 | ev_start ((W)w, ++timercnt); |
1306 | ev_start (EV_A_ (W)w, ++timercnt); |
710 | array_needsize (timers, timermax, timercnt, ); |
1307 | array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); |
711 | timers [timercnt - 1] = w; |
1308 | timers [timercnt - 1] = w; |
712 | upheap ((WT *)timers, timercnt - 1); |
1309 | upheap ((WT *)timers, timercnt - 1); |
713 | } |
|
|
714 | |
1310 | |
|
|
1311 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1312 | } |
|
|
1313 | |
715 | void |
1314 | void |
716 | evtimer_stop (struct ev_timer *w) |
1315 | ev_timer_stop (EV_P_ struct ev_timer *w) |
717 | { |
1316 | { |
718 | ev_clear ((W)w); |
1317 | ev_clear_pending (EV_A_ (W)w); |
719 | if (!ev_is_active (w)) |
1318 | if (!ev_is_active (w)) |
720 | return; |
1319 | return; |
721 | |
1320 | |
|
|
1321 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1322 | |
722 | if (w->active < timercnt--) |
1323 | if (((W)w)->active < timercnt--) |
723 | { |
1324 | { |
724 | timers [w->active - 1] = timers [timercnt]; |
1325 | timers [((W)w)->active - 1] = timers [timercnt]; |
725 | downheap ((WT *)timers, timercnt, w->active - 1); |
1326 | downheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
726 | } |
1327 | } |
727 | |
1328 | |
728 | w->at = w->repeat; |
1329 | ((WT)w)->at = w->repeat; |
729 | |
1330 | |
730 | ev_stop ((W)w); |
1331 | ev_stop (EV_A_ (W)w); |
731 | } |
1332 | } |
732 | |
1333 | |
733 | void |
1334 | void |
734 | evtimer_again (struct ev_timer *w) |
1335 | ev_timer_again (EV_P_ struct ev_timer *w) |
735 | { |
1336 | { |
736 | if (ev_is_active (w)) |
1337 | if (ev_is_active (w)) |
737 | { |
1338 | { |
738 | if (w->repeat) |
1339 | if (w->repeat) |
739 | { |
|
|
740 | w->at = now + w->repeat; |
|
|
741 | downheap ((WT *)timers, timercnt, w->active - 1); |
1340 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat); |
742 | } |
|
|
743 | else |
1341 | else |
744 | evtimer_stop (w); |
1342 | ev_timer_stop (EV_A_ w); |
745 | } |
1343 | } |
746 | else if (w->repeat) |
1344 | else if (w->repeat) |
747 | evtimer_start (w); |
1345 | ev_timer_start (EV_A_ w); |
748 | } |
1346 | } |
749 | |
1347 | |
750 | void |
1348 | void |
751 | evperiodic_start (struct ev_periodic *w) |
1349 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
752 | { |
1350 | { |
753 | if (ev_is_active (w)) |
1351 | if (ev_is_active (w)) |
754 | return; |
1352 | return; |
755 | |
1353 | |
756 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
1354 | if (w->reschedule_cb) |
757 | |
1355 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1356 | else if (w->interval) |
|
|
1357 | { |
|
|
1358 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
758 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1359 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
759 | if (w->interval) |
|
|
760 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
1360 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1361 | } |
761 | |
1362 | |
762 | ev_start ((W)w, ++periodiccnt); |
1363 | ev_start (EV_A_ (W)w, ++periodiccnt); |
763 | array_needsize (periodics, periodicmax, periodiccnt, ); |
1364 | array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); |
764 | periodics [periodiccnt - 1] = w; |
1365 | periodics [periodiccnt - 1] = w; |
765 | upheap ((WT *)periodics, periodiccnt - 1); |
1366 | upheap ((WT *)periodics, periodiccnt - 1); |
766 | } |
|
|
767 | |
1367 | |
|
|
1368 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1369 | } |
|
|
1370 | |
768 | void |
1371 | void |
769 | evperiodic_stop (struct ev_periodic *w) |
1372 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
770 | { |
1373 | { |
771 | ev_clear ((W)w); |
1374 | ev_clear_pending (EV_A_ (W)w); |
772 | if (!ev_is_active (w)) |
1375 | if (!ev_is_active (w)) |
773 | return; |
1376 | return; |
774 | |
1377 | |
|
|
1378 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1379 | |
775 | if (w->active < periodiccnt--) |
1380 | if (((W)w)->active < periodiccnt--) |
776 | { |
1381 | { |
777 | periodics [w->active - 1] = periodics [periodiccnt]; |
1382 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
778 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
1383 | downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
779 | } |
1384 | } |
780 | |
1385 | |
781 | ev_stop ((W)w); |
1386 | ev_stop (EV_A_ (W)w); |
782 | } |
1387 | } |
783 | |
1388 | |
784 | void |
1389 | void |
785 | evsignal_start (struct ev_signal *w) |
1390 | ev_periodic_again (EV_P_ struct ev_periodic *w) |
|
|
1391 | { |
|
|
1392 | /* TODO: use adjustheap and recalculation */ |
|
|
1393 | ev_periodic_stop (EV_A_ w); |
|
|
1394 | ev_periodic_start (EV_A_ w); |
|
|
1395 | } |
|
|
1396 | |
|
|
1397 | void |
|
|
1398 | ev_idle_start (EV_P_ struct ev_idle *w) |
786 | { |
1399 | { |
787 | if (ev_is_active (w)) |
1400 | if (ev_is_active (w)) |
788 | return; |
1401 | return; |
789 | |
1402 | |
|
|
1403 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1404 | array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void)); |
|
|
1405 | idles [idlecnt - 1] = w; |
|
|
1406 | } |
|
|
1407 | |
|
|
1408 | void |
|
|
1409 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1410 | { |
|
|
1411 | ev_clear_pending (EV_A_ (W)w); |
|
|
1412 | if (ev_is_active (w)) |
|
|
1413 | return; |
|
|
1414 | |
|
|
1415 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
|
|
1416 | ev_stop (EV_A_ (W)w); |
|
|
1417 | } |
|
|
1418 | |
|
|
1419 | void |
|
|
1420 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1421 | { |
|
|
1422 | if (ev_is_active (w)) |
|
|
1423 | return; |
|
|
1424 | |
|
|
1425 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1426 | array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void)); |
|
|
1427 | prepares [preparecnt - 1] = w; |
|
|
1428 | } |
|
|
1429 | |
|
|
1430 | void |
|
|
1431 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1432 | { |
|
|
1433 | ev_clear_pending (EV_A_ (W)w); |
|
|
1434 | if (ev_is_active (w)) |
|
|
1435 | return; |
|
|
1436 | |
|
|
1437 | prepares [((W)w)->active - 1] = prepares [--preparecnt]; |
|
|
1438 | ev_stop (EV_A_ (W)w); |
|
|
1439 | } |
|
|
1440 | |
|
|
1441 | void |
|
|
1442 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1443 | { |
|
|
1444 | if (ev_is_active (w)) |
|
|
1445 | return; |
|
|
1446 | |
|
|
1447 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1448 | array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void)); |
|
|
1449 | checks [checkcnt - 1] = w; |
|
|
1450 | } |
|
|
1451 | |
|
|
1452 | void |
|
|
1453 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1454 | { |
|
|
1455 | ev_clear_pending (EV_A_ (W)w); |
|
|
1456 | if (ev_is_active (w)) |
|
|
1457 | return; |
|
|
1458 | |
|
|
1459 | checks [((W)w)->active - 1] = checks [--checkcnt]; |
|
|
1460 | ev_stop (EV_A_ (W)w); |
|
|
1461 | } |
|
|
1462 | |
|
|
1463 | #ifndef SA_RESTART |
|
|
1464 | # define SA_RESTART 0 |
|
|
1465 | #endif |
|
|
1466 | |
|
|
1467 | void |
|
|
1468 | ev_signal_start (EV_P_ struct ev_signal *w) |
|
|
1469 | { |
|
|
1470 | #if EV_MULTIPLICITY |
|
|
1471 | assert (("signal watchers are only supported in the default loop", loop == default_loop)); |
|
|
1472 | #endif |
|
|
1473 | if (ev_is_active (w)) |
|
|
1474 | return; |
|
|
1475 | |
|
|
1476 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1477 | |
790 | ev_start ((W)w, 1); |
1478 | ev_start (EV_A_ (W)w, 1); |
791 | array_needsize (signals, signalmax, w->signum, signals_init); |
1479 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
792 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1480 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
793 | |
1481 | |
794 | if (!w->next) |
1482 | if (!((WL)w)->next) |
795 | { |
1483 | { |
|
|
1484 | #if WIN32 |
|
|
1485 | signal (w->signum, sighandler); |
|
|
1486 | #else |
796 | struct sigaction sa; |
1487 | struct sigaction sa; |
797 | sa.sa_handler = sighandler; |
1488 | sa.sa_handler = sighandler; |
798 | sigfillset (&sa.sa_mask); |
1489 | sigfillset (&sa.sa_mask); |
799 | sa.sa_flags = 0; |
1490 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
800 | sigaction (w->signum, &sa, 0); |
1491 | sigaction (w->signum, &sa, 0); |
|
|
1492 | #endif |
801 | } |
1493 | } |
802 | } |
1494 | } |
803 | |
1495 | |
804 | void |
1496 | void |
805 | evsignal_stop (struct ev_signal *w) |
1497 | ev_signal_stop (EV_P_ struct ev_signal *w) |
806 | { |
1498 | { |
807 | ev_clear ((W)w); |
1499 | ev_clear_pending (EV_A_ (W)w); |
808 | if (!ev_is_active (w)) |
1500 | if (!ev_is_active (w)) |
809 | return; |
1501 | return; |
810 | |
1502 | |
811 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1503 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
812 | ev_stop ((W)w); |
1504 | ev_stop (EV_A_ (W)w); |
813 | |
1505 | |
814 | if (!signals [w->signum - 1].head) |
1506 | if (!signals [w->signum - 1].head) |
815 | signal (w->signum, SIG_DFL); |
1507 | signal (w->signum, SIG_DFL); |
816 | } |
1508 | } |
817 | |
1509 | |
818 | void evidle_start (struct ev_idle *w) |
1510 | void |
|
|
1511 | ev_child_start (EV_P_ struct ev_child *w) |
819 | { |
1512 | { |
|
|
1513 | #if EV_MULTIPLICITY |
|
|
1514 | assert (("child watchers are only supported in the default loop", loop == default_loop)); |
|
|
1515 | #endif |
820 | if (ev_is_active (w)) |
1516 | if (ev_is_active (w)) |
821 | return; |
1517 | return; |
822 | |
1518 | |
823 | ev_start ((W)w, ++idlecnt); |
1519 | ev_start (EV_A_ (W)w, 1); |
824 | array_needsize (idles, idlemax, idlecnt, ); |
1520 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
825 | idles [idlecnt - 1] = w; |
|
|
826 | } |
1521 | } |
827 | |
1522 | |
828 | void evidle_stop (struct ev_idle *w) |
1523 | void |
|
|
1524 | ev_child_stop (EV_P_ struct ev_child *w) |
829 | { |
1525 | { |
830 | ev_clear ((W)w); |
1526 | ev_clear_pending (EV_A_ (W)w); |
831 | if (ev_is_active (w)) |
1527 | if (ev_is_active (w)) |
832 | return; |
1528 | return; |
833 | |
1529 | |
834 | idles [w->active - 1] = idles [--idlecnt]; |
1530 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
835 | ev_stop ((W)w); |
1531 | ev_stop (EV_A_ (W)w); |
836 | } |
|
|
837 | |
|
|
838 | void evcheck_start (struct ev_check *w) |
|
|
839 | { |
|
|
840 | if (ev_is_active (w)) |
|
|
841 | return; |
|
|
842 | |
|
|
843 | ev_start ((W)w, ++checkcnt); |
|
|
844 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
845 | checks [checkcnt - 1] = w; |
|
|
846 | } |
|
|
847 | |
|
|
848 | void evcheck_stop (struct ev_check *w) |
|
|
849 | { |
|
|
850 | ev_clear ((W)w); |
|
|
851 | if (ev_is_active (w)) |
|
|
852 | return; |
|
|
853 | |
|
|
854 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
855 | ev_stop ((W)w); |
|
|
856 | } |
1532 | } |
857 | |
1533 | |
858 | /*****************************************************************************/ |
1534 | /*****************************************************************************/ |
859 | |
1535 | |
860 | struct ev_once |
1536 | struct ev_once |
… | |
… | |
864 | void (*cb)(int revents, void *arg); |
1540 | void (*cb)(int revents, void *arg); |
865 | void *arg; |
1541 | void *arg; |
866 | }; |
1542 | }; |
867 | |
1543 | |
868 | static void |
1544 | static void |
869 | once_cb (struct ev_once *once, int revents) |
1545 | once_cb (EV_P_ struct ev_once *once, int revents) |
870 | { |
1546 | { |
871 | void (*cb)(int revents, void *arg) = once->cb; |
1547 | void (*cb)(int revents, void *arg) = once->cb; |
872 | void *arg = once->arg; |
1548 | void *arg = once->arg; |
873 | |
1549 | |
874 | evio_stop (&once->io); |
1550 | ev_io_stop (EV_A_ &once->io); |
875 | evtimer_stop (&once->to); |
1551 | ev_timer_stop (EV_A_ &once->to); |
876 | free (once); |
1552 | ev_free (once); |
877 | |
1553 | |
878 | cb (revents, arg); |
1554 | cb (revents, arg); |
879 | } |
1555 | } |
880 | |
1556 | |
881 | static void |
1557 | static void |
882 | once_cb_io (struct ev_io *w, int revents) |
1558 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
883 | { |
1559 | { |
884 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1560 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
885 | } |
1561 | } |
886 | |
1562 | |
887 | static void |
1563 | static void |
888 | once_cb_to (struct ev_timer *w, int revents) |
1564 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
889 | { |
1565 | { |
890 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1566 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
891 | } |
1567 | } |
892 | |
1568 | |
893 | void |
1569 | void |
894 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1570 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
895 | { |
1571 | { |
896 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
1572 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
897 | |
1573 | |
898 | if (!once) |
1574 | if (!once) |
899 | cb (EV_ERROR, arg); |
1575 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
900 | else |
1576 | else |
901 | { |
1577 | { |
902 | once->cb = cb; |
1578 | once->cb = cb; |
903 | once->arg = arg; |
1579 | once->arg = arg; |
904 | |
1580 | |
905 | evw_init (&once->io, once_cb_io); |
1581 | ev_init (&once->io, once_cb_io); |
906 | |
|
|
907 | if (fd >= 0) |
1582 | if (fd >= 0) |
908 | { |
1583 | { |
909 | evio_set (&once->io, fd, events); |
1584 | ev_io_set (&once->io, fd, events); |
910 | evio_start (&once->io); |
1585 | ev_io_start (EV_A_ &once->io); |
911 | } |
1586 | } |
912 | |
1587 | |
913 | evw_init (&once->to, once_cb_to); |
1588 | ev_init (&once->to, once_cb_to); |
914 | |
|
|
915 | if (timeout >= 0.) |
1589 | if (timeout >= 0.) |
916 | { |
1590 | { |
917 | evtimer_set (&once->to, timeout, 0.); |
1591 | ev_timer_set (&once->to, timeout, 0.); |
918 | evtimer_start (&once->to); |
1592 | ev_timer_start (EV_A_ &once->to); |
919 | } |
1593 | } |
920 | } |
1594 | } |
921 | } |
1595 | } |
922 | |
1596 | |
923 | /*****************************************************************************/ |
|
|
924 | |
|
|
925 | #if 0 |
|
|
926 | |
|
|
927 | struct ev_io wio; |
|
|
928 | |
|
|
929 | static void |
|
|
930 | sin_cb (struct ev_io *w, int revents) |
|
|
931 | { |
|
|
932 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
933 | } |
|
|
934 | |
|
|
935 | static void |
|
|
936 | ocb (struct ev_timer *w, int revents) |
|
|
937 | { |
|
|
938 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
939 | evtimer_stop (w); |
|
|
940 | evtimer_start (w); |
|
|
941 | } |
|
|
942 | |
|
|
943 | static void |
|
|
944 | scb (struct ev_signal *w, int revents) |
|
|
945 | { |
|
|
946 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
947 | evio_stop (&wio); |
|
|
948 | evio_start (&wio); |
|
|
949 | } |
|
|
950 | |
|
|
951 | static void |
|
|
952 | gcb (struct ev_signal *w, int revents) |
|
|
953 | { |
|
|
954 | fprintf (stderr, "generic %x\n", revents); |
|
|
955 | |
|
|
956 | } |
|
|
957 | |
|
|
958 | int main (void) |
|
|
959 | { |
|
|
960 | ev_init (0); |
|
|
961 | |
|
|
962 | evio_init (&wio, sin_cb, 0, EV_READ); |
|
|
963 | evio_start (&wio); |
|
|
964 | |
|
|
965 | struct ev_timer t[10000]; |
|
|
966 | |
|
|
967 | #if 0 |
|
|
968 | int i; |
|
|
969 | for (i = 0; i < 10000; ++i) |
|
|
970 | { |
|
|
971 | struct ev_timer *w = t + i; |
|
|
972 | evw_init (w, ocb, i); |
|
|
973 | evtimer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
974 | evtimer_start (w); |
|
|
975 | if (drand48 () < 0.5) |
|
|
976 | evtimer_stop (w); |
|
|
977 | } |
|
|
978 | #endif |
|
|
979 | |
|
|
980 | struct ev_timer t1; |
|
|
981 | evtimer_init (&t1, ocb, 5, 10); |
|
|
982 | evtimer_start (&t1); |
|
|
983 | |
|
|
984 | struct ev_signal sig; |
|
|
985 | evsignal_init (&sig, scb, SIGQUIT); |
|
|
986 | evsignal_start (&sig); |
|
|
987 | |
|
|
988 | struct ev_check cw; |
|
|
989 | evcheck_init (&cw, gcb); |
|
|
990 | evcheck_start (&cw); |
|
|
991 | |
|
|
992 | struct ev_idle iw; |
|
|
993 | evidle_init (&iw, gcb); |
|
|
994 | evidle_start (&iw); |
|
|
995 | |
|
|
996 | ev_loop (0); |
|
|
997 | |
|
|
998 | return 0; |
|
|
999 | } |
|
|
1000 | |
|
|
1001 | #endif |
|
|
1002 | |
|
|
1003 | |
|
|
1004 | |
|
|
1005 | |
|
|