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 | #ifndef PERL |
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70 | # include <signal.h> |
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71 | #endif |
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72 | |
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73 | #ifndef WIN32 |
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74 | # include <unistd.h> |
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75 | # include <sys/time.h> |
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76 | # include <sys/wait.h> |
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77 | #endif |
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78 | /**/ |
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79 | |
44 | #ifndef HAVE_MONOTONIC |
80 | #ifndef EV_USE_MONOTONIC |
45 | # ifdef CLOCK_MONOTONIC |
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46 | # define HAVE_MONOTONIC 1 |
81 | # define EV_USE_MONOTONIC 1 |
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82 | #endif |
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83 | |
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84 | #ifndef EV_USE_SELECT |
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85 | # define EV_USE_SELECT 1 |
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86 | #endif |
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87 | |
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88 | #ifndef EV_USE_POLL |
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89 | # define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ |
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90 | #endif |
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91 | |
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92 | #ifndef EV_USE_EPOLL |
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93 | # define EV_USE_EPOLL 0 |
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94 | #endif |
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95 | |
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96 | #ifndef EV_USE_KQUEUE |
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97 | # define EV_USE_KQUEUE 0 |
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98 | #endif |
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99 | |
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100 | #ifndef EV_USE_WIN32 |
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101 | # ifdef WIN32 |
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102 | # define EV_USE_WIN32 0 /* it does not exist, use select */ |
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103 | # undef EV_USE_SELECT |
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104 | # define EV_USE_SELECT 1 |
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105 | # else |
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106 | # define EV_USE_WIN32 0 |
47 | # endif |
107 | # endif |
48 | #endif |
108 | #endif |
49 | |
109 | |
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 |
110 | #ifndef EV_USE_REALTIME |
59 | # define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
111 | # define EV_USE_REALTIME 1 |
60 | #endif |
112 | #endif |
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113 | |
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114 | /**/ |
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115 | |
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116 | #ifndef CLOCK_MONOTONIC |
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117 | # undef EV_USE_MONOTONIC |
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118 | # define EV_USE_MONOTONIC 0 |
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119 | #endif |
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120 | |
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121 | #ifndef CLOCK_REALTIME |
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122 | # undef EV_USE_REALTIME |
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123 | # define EV_USE_REALTIME 0 |
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124 | #endif |
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125 | |
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126 | /**/ |
61 | |
127 | |
62 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
128 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
63 | #define MAX_BLOCKTIME 60. |
129 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ |
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130 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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131 | /*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ |
64 | |
132 | |
65 | #include "ev.h" |
133 | #include "ev.h" |
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134 | |
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135 | #if __GNUC__ >= 3 |
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136 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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137 | # define inline inline |
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138 | #else |
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139 | # define expect(expr,value) (expr) |
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140 | # define inline static |
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141 | #endif |
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142 | |
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143 | #define expect_false(expr) expect ((expr) != 0, 0) |
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144 | #define expect_true(expr) expect ((expr) != 0, 1) |
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145 | |
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146 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
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147 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
66 | |
148 | |
67 | typedef struct ev_watcher *W; |
149 | typedef struct ev_watcher *W; |
68 | typedef struct ev_watcher_list *WL; |
150 | typedef struct ev_watcher_list *WL; |
69 | typedef struct ev_watcher_time *WT; |
151 | typedef struct ev_watcher_time *WT; |
70 | |
152 | |
71 | static ev_tstamp now, diff; /* monotonic clock */ |
153 | 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 | |
154 | |
75 | static int have_monotonic; /* runtime */ |
155 | #if WIN32 |
76 | |
156 | /* note: the comment below could not be substantiated, but what would I care */ |
77 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
157 | /* MSDN says this is required to handle SIGFPE */ |
78 | static void (*method_modify)(int fd, int oev, int nev); |
158 | volatile double SIGFPE_REQ = 0.0f; |
79 | static void (*method_poll)(ev_tstamp timeout); |
159 | #endif |
80 | |
160 | |
81 | /*****************************************************************************/ |
161 | /*****************************************************************************/ |
82 | |
162 | |
83 | ev_tstamp |
163 | static void (*syserr_cb)(const char *msg); |
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164 | |
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165 | void ev_set_syserr_cb (void (*cb)(const char *msg)) |
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166 | { |
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167 | syserr_cb = cb; |
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168 | } |
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169 | |
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170 | static void |
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171 | syserr (const char *msg) |
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172 | { |
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173 | if (!msg) |
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174 | msg = "(libev) system error"; |
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175 | |
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176 | if (syserr_cb) |
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177 | syserr_cb (msg); |
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178 | else |
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179 | { |
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180 | perror (msg); |
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181 | abort (); |
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182 | } |
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183 | } |
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184 | |
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185 | static void *(*alloc)(void *ptr, long size); |
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186 | |
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187 | void ev_set_allocator (void *(*cb)(void *ptr, long size)) |
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188 | { |
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189 | alloc = cb; |
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190 | } |
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191 | |
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192 | static void * |
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193 | ev_realloc (void *ptr, long size) |
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194 | { |
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195 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
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196 | |
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197 | if (!ptr && size) |
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198 | { |
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199 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
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200 | abort (); |
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201 | } |
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202 | |
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203 | return ptr; |
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204 | } |
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205 | |
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206 | #define ev_malloc(size) ev_realloc (0, (size)) |
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207 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
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208 | |
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209 | /*****************************************************************************/ |
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210 | |
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211 | typedef struct |
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212 | { |
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213 | WL head; |
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214 | unsigned char events; |
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215 | unsigned char reify; |
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216 | } ANFD; |
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217 | |
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218 | typedef struct |
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219 | { |
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220 | W w; |
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221 | int events; |
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222 | } ANPENDING; |
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223 | |
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224 | #if EV_MULTIPLICITY |
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225 | |
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226 | struct ev_loop |
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227 | { |
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228 | # define VAR(name,decl) decl; |
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229 | # include "ev_vars.h" |
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230 | }; |
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231 | # undef VAR |
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232 | # include "ev_wrap.h" |
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233 | |
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234 | #else |
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235 | |
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236 | # define VAR(name,decl) static decl; |
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237 | # include "ev_vars.h" |
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238 | # undef VAR |
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239 | |
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240 | #endif |
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241 | |
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242 | /*****************************************************************************/ |
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243 | |
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244 | inline ev_tstamp |
84 | ev_time (void) |
245 | ev_time (void) |
85 | { |
246 | { |
86 | #if HAVE_REALTIME |
247 | #if EV_USE_REALTIME |
87 | struct timespec ts; |
248 | struct timespec ts; |
88 | clock_gettime (CLOCK_REALTIME, &ts); |
249 | clock_gettime (CLOCK_REALTIME, &ts); |
89 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
250 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
90 | #else |
251 | #else |
91 | struct timeval tv; |
252 | struct timeval tv; |
92 | gettimeofday (&tv, 0); |
253 | gettimeofday (&tv, 0); |
93 | return tv.tv_sec + tv.tv_usec * 1e-6; |
254 | return tv.tv_sec + tv.tv_usec * 1e-6; |
94 | #endif |
255 | #endif |
95 | } |
256 | } |
96 | |
257 | |
97 | static ev_tstamp |
258 | inline ev_tstamp |
98 | get_clock (void) |
259 | get_clock (void) |
99 | { |
260 | { |
100 | #if HAVE_MONOTONIC |
261 | #if EV_USE_MONOTONIC |
101 | if (have_monotonic) |
262 | if (expect_true (have_monotonic)) |
102 | { |
263 | { |
103 | struct timespec ts; |
264 | struct timespec ts; |
104 | clock_gettime (CLOCK_MONOTONIC, &ts); |
265 | clock_gettime (CLOCK_MONOTONIC, &ts); |
105 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
266 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
106 | } |
267 | } |
107 | #endif |
268 | #endif |
108 | |
269 | |
109 | return ev_time (); |
270 | return ev_time (); |
110 | } |
271 | } |
111 | |
272 | |
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273 | ev_tstamp |
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274 | ev_now (EV_P) |
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275 | { |
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276 | return rt_now; |
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277 | } |
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278 | |
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279 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
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280 | |
112 | #define array_needsize(base,cur,cnt,init) \ |
281 | #define array_needsize(base,cur,cnt,init) \ |
113 | if ((cnt) > cur) \ |
282 | if (expect_false ((cnt) > cur)) \ |
114 | { \ |
283 | { \ |
115 | int newcnt = cur ? cur << 1 : 16; \ |
284 | int newcnt = cur; \ |
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285 | do \ |
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286 | { \ |
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287 | newcnt = array_roundsize (base, newcnt << 1); \ |
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288 | } \ |
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289 | while ((cnt) > newcnt); \ |
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290 | \ |
116 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
291 | base = ev_realloc (base, sizeof (*base) * (newcnt)); \ |
117 | init (base + cur, newcnt - cur); \ |
292 | init (base + cur, newcnt - cur); \ |
118 | cur = newcnt; \ |
293 | cur = newcnt; \ |
119 | } |
294 | } |
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295 | |
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296 | #define array_slim(stem) \ |
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297 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
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298 | { \ |
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299 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
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300 | base = ev_realloc (base, sizeof (*base) * (stem ## max)); \ |
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301 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
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302 | } |
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303 | |
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304 | /* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */ |
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305 | /* bringing us everlasting joy in form of stupid extra macros that are not required in C */ |
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306 | #define array_free_microshit(stem) \ |
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307 | ev_free (stem ## s); stem ## cnt = stem ## max = 0; |
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308 | |
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309 | #define array_free(stem, idx) \ |
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310 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
120 | |
311 | |
121 | /*****************************************************************************/ |
312 | /*****************************************************************************/ |
122 | |
313 | |
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 |
314 | static void |
136 | anfds_init (ANFD *base, int count) |
315 | anfds_init (ANFD *base, int count) |
137 | { |
316 | { |
138 | while (count--) |
317 | while (count--) |
139 | { |
318 | { |
140 | base->head = 0; |
319 | base->head = 0; |
141 | base->wev = base->rev = EV_NONE; |
320 | base->events = EV_NONE; |
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321 | base->reify = 0; |
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322 | |
142 | ++base; |
323 | ++base; |
143 | } |
324 | } |
144 | } |
325 | } |
145 | |
326 | |
146 | typedef struct |
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147 | { |
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148 | W w; |
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149 | int events; |
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150 | } ANPENDING; |
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151 | |
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152 | static ANPENDING *pendings; |
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153 | static int pendingmax, pendingcnt; |
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154 | |
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155 | static void |
327 | static void |
156 | event (W w, int events) |
328 | event (EV_P_ W w, int events) |
157 | { |
329 | { |
158 | if (w->active) |
330 | if (w->pending) |
159 | { |
331 | { |
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; |
332 | pendings [ABSPRI (w)][w->pending - 1].events |= events; |
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333 | return; |
164 | } |
334 | } |
165 | } |
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166 | |
335 | |
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336 | w->pending = ++pendingcnt [ABSPRI (w)]; |
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337 | array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void)); |
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338 | pendings [ABSPRI (w)][w->pending - 1].w = w; |
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339 | pendings [ABSPRI (w)][w->pending - 1].events = events; |
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340 | } |
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341 | |
167 | static void |
342 | static void |
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343 | queue_events (EV_P_ W *events, int eventcnt, int type) |
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344 | { |
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345 | int i; |
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346 | |
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347 | for (i = 0; i < eventcnt; ++i) |
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348 | event (EV_A_ events [i], type); |
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349 | } |
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350 | |
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351 | static void |
168 | fd_event (int fd, int events) |
352 | fd_event (EV_P_ int fd, int events) |
169 | { |
353 | { |
170 | ANFD *anfd = anfds + fd; |
354 | ANFD *anfd = anfds + fd; |
171 | struct ev_io *w; |
355 | struct ev_io *w; |
172 | |
356 | |
173 | for (w = anfd->head; w; w = w->next) |
357 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
174 | { |
358 | { |
175 | int ev = w->events & events; |
359 | int ev = w->events & events; |
176 | |
360 | |
177 | if (ev) |
361 | if (ev) |
178 | event ((W)w, ev); |
362 | event (EV_A_ (W)w, ev); |
179 | } |
363 | } |
180 | } |
364 | } |
181 | |
365 | |
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366 | /*****************************************************************************/ |
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367 | |
182 | static void |
368 | static void |
183 | queue_events (W *events, int eventcnt, int type) |
369 | fd_reify (EV_P) |
184 | { |
370 | { |
185 | int i; |
371 | int i; |
186 | |
372 | |
187 | for (i = 0; i < eventcnt; ++i) |
373 | for (i = 0; i < fdchangecnt; ++i) |
188 | event (events [i], type); |
374 | { |
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375 | int fd = fdchanges [i]; |
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376 | ANFD *anfd = anfds + fd; |
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377 | struct ev_io *w; |
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378 | |
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379 | int events = 0; |
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380 | |
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381 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
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382 | events |= w->events; |
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383 | |
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384 | anfd->reify = 0; |
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385 | |
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386 | method_modify (EV_A_ fd, anfd->events, events); |
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387 | anfd->events = events; |
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388 | } |
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389 | |
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390 | fdchangecnt = 0; |
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391 | } |
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392 | |
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393 | static void |
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394 | fd_change (EV_P_ int fd) |
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395 | { |
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396 | if (anfds [fd].reify) |
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397 | return; |
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398 | |
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399 | anfds [fd].reify = 1; |
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400 | |
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401 | ++fdchangecnt; |
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402 | array_needsize (fdchanges, fdchangemax, fdchangecnt, (void)); |
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403 | fdchanges [fdchangecnt - 1] = fd; |
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404 | } |
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405 | |
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406 | static void |
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407 | fd_kill (EV_P_ int fd) |
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408 | { |
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409 | struct ev_io *w; |
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410 | |
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411 | while ((w = (struct ev_io *)anfds [fd].head)) |
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412 | { |
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413 | ev_io_stop (EV_A_ w); |
|
|
414 | event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
415 | } |
|
|
416 | } |
|
|
417 | |
|
|
418 | static int |
|
|
419 | fd_valid (int fd) |
|
|
420 | { |
|
|
421 | #ifdef WIN32 |
|
|
422 | return !!win32_get_osfhandle (fd); |
|
|
423 | #else |
|
|
424 | return fcntl (fd, F_GETFD) != -1; |
|
|
425 | #endif |
189 | } |
426 | } |
190 | |
427 | |
191 | /* called on EBADF to verify fds */ |
428 | /* called on EBADF to verify fds */ |
192 | static void |
429 | static void |
193 | fd_recheck () |
430 | fd_ebadf (EV_P) |
194 | { |
431 | { |
195 | int fd; |
432 | int fd; |
196 | |
433 | |
197 | for (fd = 0; fd < anfdmax; ++fd) |
434 | for (fd = 0; fd < anfdmax; ++fd) |
198 | if (anfds [fd].wev) |
435 | if (anfds [fd].events) |
199 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
436 | if (!fd_valid (fd) == -1 && errno == EBADF) |
200 | while (anfds [fd].head) |
437 | fd_kill (EV_A_ fd); |
201 | evio_stop (anfds [fd].head); |
438 | } |
|
|
439 | |
|
|
440 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
441 | static void |
|
|
442 | fd_enomem (EV_P) |
|
|
443 | { |
|
|
444 | int fd; |
|
|
445 | |
|
|
446 | for (fd = anfdmax; fd--; ) |
|
|
447 | if (anfds [fd].events) |
|
|
448 | { |
|
|
449 | fd_kill (EV_A_ fd); |
|
|
450 | return; |
|
|
451 | } |
|
|
452 | } |
|
|
453 | |
|
|
454 | /* usually called after fork if method needs to re-arm all fds from scratch */ |
|
|
455 | static void |
|
|
456 | fd_rearm_all (EV_P) |
|
|
457 | { |
|
|
458 | int fd; |
|
|
459 | |
|
|
460 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
461 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
462 | if (anfds [fd].events) |
|
|
463 | { |
|
|
464 | anfds [fd].events = 0; |
|
|
465 | fd_change (EV_A_ fd); |
|
|
466 | } |
202 | } |
467 | } |
203 | |
468 | |
204 | /*****************************************************************************/ |
469 | /*****************************************************************************/ |
205 | |
470 | |
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 |
471 | static void |
213 | upheap (WT *timers, int k) |
472 | upheap (WT *heap, int k) |
214 | { |
473 | { |
215 | WT w = timers [k]; |
474 | WT w = heap [k]; |
216 | |
475 | |
217 | while (k && timers [k >> 1]->at > w->at) |
476 | while (k && heap [k >> 1]->at > w->at) |
218 | { |
477 | { |
219 | timers [k] = timers [k >> 1]; |
478 | heap [k] = heap [k >> 1]; |
220 | timers [k]->active = k + 1; |
479 | ((W)heap [k])->active = k + 1; |
221 | k >>= 1; |
480 | k >>= 1; |
222 | } |
481 | } |
223 | |
482 | |
224 | timers [k] = w; |
483 | heap [k] = w; |
225 | timers [k]->active = k + 1; |
484 | ((W)heap [k])->active = k + 1; |
226 | |
485 | |
227 | } |
486 | } |
228 | |
487 | |
229 | static void |
488 | static void |
230 | downheap (WT *timers, int N, int k) |
489 | downheap (WT *heap, int N, int k) |
231 | { |
490 | { |
232 | WT w = timers [k]; |
491 | WT w = heap [k]; |
233 | |
492 | |
234 | while (k < (N >> 1)) |
493 | while (k < (N >> 1)) |
235 | { |
494 | { |
236 | int j = k << 1; |
495 | int j = k << 1; |
237 | |
496 | |
238 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
497 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
239 | ++j; |
498 | ++j; |
240 | |
499 | |
241 | if (w->at <= timers [j]->at) |
500 | if (w->at <= heap [j]->at) |
242 | break; |
501 | break; |
243 | |
502 | |
244 | timers [k] = timers [j]; |
503 | heap [k] = heap [j]; |
245 | timers [k]->active = k + 1; |
504 | ((W)heap [k])->active = k + 1; |
246 | k = j; |
505 | k = j; |
247 | } |
506 | } |
248 | |
507 | |
249 | timers [k] = w; |
508 | heap [k] = w; |
250 | timers [k]->active = k + 1; |
509 | ((W)heap [k])->active = k + 1; |
251 | } |
510 | } |
252 | |
511 | |
253 | /*****************************************************************************/ |
512 | /*****************************************************************************/ |
254 | |
513 | |
255 | typedef struct |
514 | typedef struct |
256 | { |
515 | { |
257 | struct ev_signal *head; |
516 | WL head; |
258 | sig_atomic_t gotsig; |
517 | sig_atomic_t volatile gotsig; |
259 | } ANSIG; |
518 | } ANSIG; |
260 | |
519 | |
261 | static ANSIG *signals; |
520 | static ANSIG *signals; |
262 | static int signalmax; |
521 | static int signalmax; |
263 | |
522 | |
264 | static int sigpipe [2]; |
523 | static int sigpipe [2]; |
265 | static sig_atomic_t gotsig; |
524 | static sig_atomic_t volatile gotsig; |
266 | static struct ev_io sigev; |
525 | static struct ev_io sigev; |
267 | |
526 | |
268 | static void |
527 | static void |
269 | signals_init (ANSIG *base, int count) |
528 | signals_init (ANSIG *base, int count) |
270 | { |
529 | { |
271 | while (count--) |
530 | while (count--) |
272 | { |
531 | { |
273 | base->head = 0; |
532 | base->head = 0; |
274 | base->gotsig = 0; |
533 | base->gotsig = 0; |
|
|
534 | |
275 | ++base; |
535 | ++base; |
276 | } |
536 | } |
277 | } |
537 | } |
278 | |
538 | |
279 | static void |
539 | static void |
280 | sighandler (int signum) |
540 | sighandler (int signum) |
281 | { |
541 | { |
|
|
542 | #if WIN32 |
|
|
543 | signal (signum, sighandler); |
|
|
544 | #endif |
|
|
545 | |
282 | signals [signum - 1].gotsig = 1; |
546 | signals [signum - 1].gotsig = 1; |
283 | |
547 | |
284 | if (!gotsig) |
548 | if (!gotsig) |
285 | { |
549 | { |
|
|
550 | int old_errno = errno; |
286 | gotsig = 1; |
551 | gotsig = 1; |
287 | write (sigpipe [1], &gotsig, 1); |
552 | write (sigpipe [1], &signum, 1); |
|
|
553 | errno = old_errno; |
288 | } |
554 | } |
289 | } |
555 | } |
290 | |
556 | |
291 | static void |
557 | static void |
292 | sigcb (struct ev_io *iow, int revents) |
558 | sigcb (EV_P_ struct ev_io *iow, int revents) |
293 | { |
559 | { |
294 | struct ev_signal *w; |
560 | WL w; |
295 | int sig; |
561 | int signum; |
296 | |
562 | |
|
|
563 | read (sigpipe [0], &revents, 1); |
297 | gotsig = 0; |
564 | gotsig = 0; |
298 | read (sigpipe [0], &revents, 1); |
|
|
299 | |
565 | |
300 | for (sig = signalmax; sig--; ) |
566 | for (signum = signalmax; signum--; ) |
301 | if (signals [sig].gotsig) |
567 | if (signals [signum].gotsig) |
302 | { |
568 | { |
303 | signals [sig].gotsig = 0; |
569 | signals [signum].gotsig = 0; |
304 | |
570 | |
305 | for (w = signals [sig].head; w; w = w->next) |
571 | for (w = signals [signum].head; w; w = w->next) |
306 | event ((W)w, EV_SIGNAL); |
572 | event (EV_A_ (W)w, EV_SIGNAL); |
307 | } |
573 | } |
308 | } |
574 | } |
309 | |
575 | |
310 | static void |
576 | static void |
311 | siginit (void) |
577 | siginit (EV_P) |
312 | { |
578 | { |
|
|
579 | #ifndef WIN32 |
313 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
580 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
314 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
581 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
315 | |
582 | |
316 | /* rather than sort out wether we really need nb, set it */ |
583 | /* rather than sort out wether we really need nb, set it */ |
317 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
584 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
318 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
585 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
586 | #endif |
319 | |
587 | |
320 | evio_set (&sigev, sigpipe [0], EV_READ); |
588 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
321 | evio_start (&sigev); |
589 | ev_io_start (EV_A_ &sigev); |
|
|
590 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
322 | } |
591 | } |
323 | |
592 | |
324 | /*****************************************************************************/ |
593 | /*****************************************************************************/ |
325 | |
594 | |
326 | static struct ev_idle **idles; |
595 | static struct ev_child *childs [PID_HASHSIZE]; |
327 | static int idlemax, idlecnt; |
|
|
328 | |
596 | |
329 | static struct ev_check **checks; |
597 | #ifndef WIN32 |
330 | static int checkmax, checkcnt; |
598 | |
|
|
599 | static struct ev_signal childev; |
|
|
600 | |
|
|
601 | #ifndef WCONTINUED |
|
|
602 | # define WCONTINUED 0 |
|
|
603 | #endif |
|
|
604 | |
|
|
605 | static void |
|
|
606 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
|
|
607 | { |
|
|
608 | struct ev_child *w; |
|
|
609 | |
|
|
610 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
611 | if (w->pid == pid || !w->pid) |
|
|
612 | { |
|
|
613 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
|
|
614 | w->rpid = pid; |
|
|
615 | w->rstatus = status; |
|
|
616 | event (EV_A_ (W)w, EV_CHILD); |
|
|
617 | } |
|
|
618 | } |
|
|
619 | |
|
|
620 | static void |
|
|
621 | childcb (EV_P_ struct ev_signal *sw, int revents) |
|
|
622 | { |
|
|
623 | int pid, status; |
|
|
624 | |
|
|
625 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
|
|
626 | { |
|
|
627 | /* make sure we are called again until all childs have been reaped */ |
|
|
628 | event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
629 | |
|
|
630 | child_reap (EV_A_ sw, pid, pid, status); |
|
|
631 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
|
|
632 | } |
|
|
633 | } |
|
|
634 | |
|
|
635 | #endif |
331 | |
636 | |
332 | /*****************************************************************************/ |
637 | /*****************************************************************************/ |
333 | |
638 | |
|
|
639 | #if EV_USE_KQUEUE |
|
|
640 | # include "ev_kqueue.c" |
|
|
641 | #endif |
334 | #if HAVE_EPOLL |
642 | #if EV_USE_EPOLL |
335 | # include "ev_epoll.c" |
643 | # include "ev_epoll.c" |
336 | #endif |
644 | #endif |
|
|
645 | #if EV_USE_POLL |
|
|
646 | # include "ev_poll.c" |
|
|
647 | #endif |
337 | #if HAVE_SELECT |
648 | #if EV_USE_SELECT |
338 | # include "ev_select.c" |
649 | # include "ev_select.c" |
339 | #endif |
650 | #endif |
340 | |
651 | |
341 | int ev_init (int flags) |
652 | int |
|
|
653 | ev_version_major (void) |
342 | { |
654 | { |
|
|
655 | return EV_VERSION_MAJOR; |
|
|
656 | } |
|
|
657 | |
|
|
658 | int |
|
|
659 | ev_version_minor (void) |
|
|
660 | { |
|
|
661 | return EV_VERSION_MINOR; |
|
|
662 | } |
|
|
663 | |
|
|
664 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
665 | static int |
|
|
666 | enable_secure (void) |
|
|
667 | { |
|
|
668 | #ifdef WIN32 |
|
|
669 | return 0; |
|
|
670 | #else |
|
|
671 | return getuid () != geteuid () |
|
|
672 | || getgid () != getegid (); |
|
|
673 | #endif |
|
|
674 | } |
|
|
675 | |
|
|
676 | int |
|
|
677 | ev_method (EV_P) |
|
|
678 | { |
|
|
679 | return method; |
|
|
680 | } |
|
|
681 | |
|
|
682 | static void |
|
|
683 | loop_init (EV_P_ int methods) |
|
|
684 | { |
|
|
685 | if (!method) |
|
|
686 | { |
343 | #if HAVE_MONOTONIC |
687 | #if EV_USE_MONOTONIC |
344 | { |
688 | { |
345 | struct timespec ts; |
689 | struct timespec ts; |
346 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
690 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
347 | have_monotonic = 1; |
691 | have_monotonic = 1; |
348 | } |
692 | } |
349 | #endif |
693 | #endif |
350 | |
694 | |
351 | ev_now = ev_time (); |
695 | rt_now = ev_time (); |
352 | now = get_clock (); |
696 | mn_now = get_clock (); |
353 | diff = ev_now - now; |
697 | now_floor = mn_now; |
|
|
698 | rtmn_diff = rt_now - mn_now; |
354 | |
699 | |
|
|
700 | if (methods == EVMETHOD_AUTO) |
|
|
701 | if (!enable_secure () && getenv ("LIBEV_METHODS")) |
|
|
702 | methods = atoi (getenv ("LIBEV_METHODS")); |
|
|
703 | else |
|
|
704 | methods = EVMETHOD_ANY; |
|
|
705 | |
|
|
706 | method = 0; |
|
|
707 | #if EV_USE_WIN32 |
|
|
708 | if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods); |
|
|
709 | #endif |
|
|
710 | #if EV_USE_KQUEUE |
|
|
711 | if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); |
|
|
712 | #endif |
|
|
713 | #if EV_USE_EPOLL |
|
|
714 | if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); |
|
|
715 | #endif |
|
|
716 | #if EV_USE_POLL |
|
|
717 | if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); |
|
|
718 | #endif |
|
|
719 | #if EV_USE_SELECT |
|
|
720 | if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); |
|
|
721 | #endif |
|
|
722 | |
|
|
723 | ev_watcher_init (&sigev, sigcb); |
|
|
724 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
725 | } |
|
|
726 | } |
|
|
727 | |
|
|
728 | void |
|
|
729 | loop_destroy (EV_P) |
|
|
730 | { |
|
|
731 | int i; |
|
|
732 | |
|
|
733 | #if EV_USE_WIN32 |
|
|
734 | if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A); |
|
|
735 | #endif |
|
|
736 | #if EV_USE_KQUEUE |
|
|
737 | if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); |
|
|
738 | #endif |
|
|
739 | #if EV_USE_EPOLL |
|
|
740 | if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); |
|
|
741 | #endif |
|
|
742 | #if EV_USE_POLL |
|
|
743 | if (method == EVMETHOD_POLL ) poll_destroy (EV_A); |
|
|
744 | #endif |
|
|
745 | #if EV_USE_SELECT |
|
|
746 | if (method == EVMETHOD_SELECT) select_destroy (EV_A); |
|
|
747 | #endif |
|
|
748 | |
|
|
749 | for (i = NUMPRI; i--; ) |
|
|
750 | array_free (pending, [i]); |
|
|
751 | |
|
|
752 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
753 | array_free_microshit (fdchange); |
|
|
754 | array_free_microshit (timer); |
|
|
755 | array_free_microshit (periodic); |
|
|
756 | array_free_microshit (idle); |
|
|
757 | array_free_microshit (prepare); |
|
|
758 | array_free_microshit (check); |
|
|
759 | |
|
|
760 | method = 0; |
|
|
761 | } |
|
|
762 | |
|
|
763 | static void |
|
|
764 | loop_fork (EV_P) |
|
|
765 | { |
|
|
766 | #if EV_USE_EPOLL |
|
|
767 | if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); |
|
|
768 | #endif |
|
|
769 | #if EV_USE_KQUEUE |
|
|
770 | if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); |
|
|
771 | #endif |
|
|
772 | |
|
|
773 | if (ev_is_active (&sigev)) |
|
|
774 | { |
|
|
775 | /* default loop */ |
|
|
776 | |
|
|
777 | ev_ref (EV_A); |
|
|
778 | ev_io_stop (EV_A_ &sigev); |
|
|
779 | close (sigpipe [0]); |
|
|
780 | close (sigpipe [1]); |
|
|
781 | |
|
|
782 | while (pipe (sigpipe)) |
|
|
783 | syserr ("(libev) error creating pipe"); |
|
|
784 | |
|
|
785 | siginit (EV_A); |
|
|
786 | } |
|
|
787 | |
|
|
788 | postfork = 0; |
|
|
789 | } |
|
|
790 | |
|
|
791 | #if EV_MULTIPLICITY |
|
|
792 | struct ev_loop * |
|
|
793 | ev_loop_new (int methods) |
|
|
794 | { |
|
|
795 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
796 | |
|
|
797 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
798 | |
|
|
799 | loop_init (EV_A_ methods); |
|
|
800 | |
|
|
801 | if (ev_method (EV_A)) |
|
|
802 | return loop; |
|
|
803 | |
|
|
804 | return 0; |
|
|
805 | } |
|
|
806 | |
|
|
807 | void |
|
|
808 | ev_loop_destroy (EV_P) |
|
|
809 | { |
|
|
810 | loop_destroy (EV_A); |
|
|
811 | ev_free (loop); |
|
|
812 | } |
|
|
813 | |
|
|
814 | void |
|
|
815 | ev_loop_fork (EV_P) |
|
|
816 | { |
|
|
817 | postfork = 1; |
|
|
818 | } |
|
|
819 | |
|
|
820 | #endif |
|
|
821 | |
|
|
822 | #if EV_MULTIPLICITY |
|
|
823 | struct ev_loop default_loop_struct; |
|
|
824 | static struct ev_loop *default_loop; |
|
|
825 | |
|
|
826 | struct ev_loop * |
|
|
827 | #else |
|
|
828 | static int default_loop; |
|
|
829 | |
|
|
830 | int |
|
|
831 | #endif |
|
|
832 | ev_default_loop (int methods) |
|
|
833 | { |
|
|
834 | if (sigpipe [0] == sigpipe [1]) |
355 | if (pipe (sigpipe)) |
835 | if (pipe (sigpipe)) |
356 | return 0; |
836 | return 0; |
357 | |
837 | |
358 | ev_method = EVMETHOD_NONE; |
838 | if (!default_loop) |
359 | #if HAVE_EPOLL |
839 | { |
360 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
840 | #if EV_MULTIPLICITY |
|
|
841 | struct ev_loop *loop = default_loop = &default_loop_struct; |
|
|
842 | #else |
|
|
843 | default_loop = 1; |
361 | #endif |
844 | #endif |
362 | #if HAVE_SELECT |
|
|
363 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
364 | #endif |
|
|
365 | |
845 | |
|
|
846 | loop_init (EV_A_ methods); |
|
|
847 | |
|
|
848 | if (ev_method (EV_A)) |
|
|
849 | { |
|
|
850 | siginit (EV_A); |
|
|
851 | |
|
|
852 | #ifndef WIN32 |
|
|
853 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
854 | ev_set_priority (&childev, EV_MAXPRI); |
|
|
855 | ev_signal_start (EV_A_ &childev); |
|
|
856 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
857 | #endif |
|
|
858 | } |
|
|
859 | else |
|
|
860 | default_loop = 0; |
|
|
861 | } |
|
|
862 | |
|
|
863 | return default_loop; |
|
|
864 | } |
|
|
865 | |
|
|
866 | void |
|
|
867 | ev_default_destroy (void) |
|
|
868 | { |
|
|
869 | #if EV_MULTIPLICITY |
|
|
870 | struct ev_loop *loop = default_loop; |
|
|
871 | #endif |
|
|
872 | |
|
|
873 | #ifndef WIN32 |
|
|
874 | ev_ref (EV_A); /* child watcher */ |
|
|
875 | ev_signal_stop (EV_A_ &childev); |
|
|
876 | #endif |
|
|
877 | |
|
|
878 | ev_ref (EV_A); /* signal watcher */ |
|
|
879 | ev_io_stop (EV_A_ &sigev); |
|
|
880 | |
|
|
881 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
882 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
883 | |
|
|
884 | loop_destroy (EV_A); |
|
|
885 | } |
|
|
886 | |
|
|
887 | void |
|
|
888 | ev_default_fork (void) |
|
|
889 | { |
|
|
890 | #if EV_MULTIPLICITY |
|
|
891 | struct ev_loop *loop = default_loop; |
|
|
892 | #endif |
|
|
893 | |
366 | if (ev_method) |
894 | if (method) |
367 | { |
895 | postfork = 1; |
368 | evw_init (&sigev, sigcb); |
|
|
369 | siginit (); |
|
|
370 | } |
|
|
371 | |
|
|
372 | return ev_method; |
|
|
373 | } |
896 | } |
374 | |
897 | |
375 | /*****************************************************************************/ |
898 | /*****************************************************************************/ |
376 | |
899 | |
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 |
900 | static void |
404 | fd_reify (void) |
901 | call_pending (EV_P) |
405 | { |
902 | { |
406 | int i; |
903 | int pri; |
407 | |
904 | |
408 | for (i = 0; i < fdchangecnt; ++i) |
905 | for (pri = NUMPRI; pri--; ) |
409 | { |
906 | while (pendingcnt [pri]) |
410 | int fd = fdchanges [i]; |
|
|
411 | ANFD *anfd = anfds + fd; |
|
|
412 | struct ev_io *w; |
|
|
413 | |
|
|
414 | int wev = 0; |
|
|
415 | |
|
|
416 | for (w = anfd->head; w; w = w->next) |
|
|
417 | wev |= w->events; |
|
|
418 | |
|
|
419 | if (anfd->wev != wev) |
|
|
420 | { |
907 | { |
421 | method_modify (fd, anfd->wev, wev); |
|
|
422 | anfd->wev = wev; |
|
|
423 | } |
|
|
424 | } |
|
|
425 | |
|
|
426 | fdchangecnt = 0; |
|
|
427 | } |
|
|
428 | |
|
|
429 | static void |
|
|
430 | call_pending () |
|
|
431 | { |
|
|
432 | while (pendingcnt) |
|
|
433 | { |
|
|
434 | ANPENDING *p = pendings + --pendingcnt; |
908 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
435 | |
909 | |
436 | if (p->w) |
910 | if (p->w) |
437 | { |
911 | { |
438 | p->w->pending = 0; |
912 | p->w->pending = 0; |
439 | p->w->cb (p->w, p->events); |
913 | p->w->cb (EV_A_ p->w, p->events); |
440 | } |
914 | } |
441 | } |
915 | } |
442 | } |
916 | } |
443 | |
917 | |
444 | static void |
918 | static void |
445 | timers_reify () |
919 | timers_reify (EV_P) |
446 | { |
920 | { |
447 | while (timercnt && timers [0]->at <= now) |
921 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
448 | { |
922 | { |
449 | struct ev_timer *w = timers [0]; |
923 | struct ev_timer *w = timers [0]; |
450 | |
924 | |
451 | event ((W)w, EV_TIMEOUT); |
925 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
452 | |
926 | |
453 | /* first reschedule or stop timer */ |
927 | /* first reschedule or stop timer */ |
454 | if (w->repeat) |
928 | if (w->repeat) |
455 | { |
929 | { |
|
|
930 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
456 | w->at = now + w->repeat; |
931 | ((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); |
932 | downheap ((WT *)timers, timercnt, 0); |
459 | } |
933 | } |
460 | else |
934 | else |
461 | evtimer_stop (w); /* nonrepeating: stop timer */ |
935 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
462 | } |
|
|
463 | } |
|
|
464 | |
936 | |
|
|
937 | event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
938 | } |
|
|
939 | } |
|
|
940 | |
465 | static void |
941 | static void |
466 | periodics_reify () |
942 | periodics_reify (EV_P) |
467 | { |
943 | { |
468 | while (periodiccnt && periodics [0]->at <= ev_now) |
944 | while (periodiccnt && ((WT)periodics [0])->at <= rt_now) |
469 | { |
945 | { |
470 | struct ev_periodic *w = periodics [0]; |
946 | struct ev_periodic *w = periodics [0]; |
|
|
947 | |
|
|
948 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
471 | |
949 | |
472 | /* first reschedule or stop timer */ |
950 | /* first reschedule or stop timer */ |
473 | if (w->interval) |
951 | if (w->interval) |
474 | { |
952 | { |
475 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
953 | ((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
476 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
954 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now)); |
477 | downheap ((WT *)periodics, periodiccnt, 0); |
955 | downheap ((WT *)periodics, periodiccnt, 0); |
478 | } |
956 | } |
479 | else |
957 | else |
480 | evperiodic_stop (w); /* nonrepeating: stop timer */ |
958 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
481 | |
959 | |
482 | event ((W)w, EV_TIMEOUT); |
960 | event (EV_A_ (W)w, EV_PERIODIC); |
483 | } |
961 | } |
484 | } |
962 | } |
485 | |
963 | |
486 | static void |
964 | static void |
487 | periodics_reschedule (ev_tstamp diff) |
965 | periodics_reschedule (EV_P) |
488 | { |
966 | { |
489 | int i; |
967 | int i; |
490 | |
968 | |
491 | /* adjust periodics after time jump */ |
969 | /* adjust periodics after time jump */ |
492 | for (i = 0; i < periodiccnt; ++i) |
970 | for (i = 0; i < periodiccnt; ++i) |
493 | { |
971 | { |
494 | struct ev_periodic *w = periodics [i]; |
972 | struct ev_periodic *w = periodics [i]; |
495 | |
973 | |
496 | if (w->interval) |
974 | if (w->interval) |
497 | { |
975 | { |
498 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
976 | ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; |
499 | |
977 | |
500 | if (fabs (diff) >= 1e-4) |
978 | if (fabs (diff) >= 1e-4) |
501 | { |
979 | { |
502 | evperiodic_stop (w); |
980 | ev_periodic_stop (EV_A_ w); |
503 | evperiodic_start (w); |
981 | ev_periodic_start (EV_A_ w); |
504 | |
982 | |
505 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
983 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
506 | } |
984 | } |
507 | } |
985 | } |
508 | } |
986 | } |
509 | } |
987 | } |
510 | |
988 | |
|
|
989 | inline int |
|
|
990 | time_update_monotonic (EV_P) |
|
|
991 | { |
|
|
992 | mn_now = get_clock (); |
|
|
993 | |
|
|
994 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
995 | { |
|
|
996 | rt_now = rtmn_diff + mn_now; |
|
|
997 | return 0; |
|
|
998 | } |
|
|
999 | else |
|
|
1000 | { |
|
|
1001 | now_floor = mn_now; |
|
|
1002 | rt_now = ev_time (); |
|
|
1003 | return 1; |
|
|
1004 | } |
|
|
1005 | } |
|
|
1006 | |
511 | static void |
1007 | static void |
512 | time_update () |
1008 | time_update (EV_P) |
513 | { |
1009 | { |
514 | int i; |
1010 | int i; |
515 | |
1011 | |
516 | ev_now = ev_time (); |
1012 | #if EV_USE_MONOTONIC |
517 | |
|
|
518 | if (have_monotonic) |
1013 | if (expect_true (have_monotonic)) |
519 | { |
1014 | { |
520 | ev_tstamp odiff = diff; |
1015 | if (time_update_monotonic (EV_A)) |
521 | |
|
|
522 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
523 | { |
1016 | { |
524 | now = get_clock (); |
1017 | ev_tstamp odiff = rtmn_diff; |
|
|
1018 | |
|
|
1019 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
1020 | { |
525 | diff = ev_now - now; |
1021 | rtmn_diff = rt_now - mn_now; |
526 | |
1022 | |
527 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
1023 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
528 | return; /* all is well */ |
1024 | return; /* all is well */ |
529 | |
1025 | |
530 | ev_now = ev_time (); |
1026 | rt_now = ev_time (); |
|
|
1027 | mn_now = get_clock (); |
|
|
1028 | now_floor = mn_now; |
|
|
1029 | } |
|
|
1030 | |
|
|
1031 | periodics_reschedule (EV_A); |
|
|
1032 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1033 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
531 | } |
1034 | } |
532 | |
|
|
533 | periodics_reschedule (diff - odiff); |
|
|
534 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
535 | } |
1035 | } |
536 | else |
1036 | else |
|
|
1037 | #endif |
537 | { |
1038 | { |
538 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
1039 | rt_now = ev_time (); |
|
|
1040 | |
|
|
1041 | if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
539 | { |
1042 | { |
540 | periodics_reschedule (ev_now - now); |
1043 | periodics_reschedule (EV_A); |
541 | |
1044 | |
542 | /* adjust timers. this is easy, as the offset is the same for all */ |
1045 | /* adjust timers. this is easy, as the offset is the same for all */ |
543 | for (i = 0; i < timercnt; ++i) |
1046 | for (i = 0; i < timercnt; ++i) |
544 | timers [i]->at += diff; |
1047 | ((WT)timers [i])->at += rt_now - mn_now; |
545 | } |
1048 | } |
546 | |
1049 | |
547 | now = ev_now; |
1050 | mn_now = rt_now; |
548 | } |
1051 | } |
549 | } |
1052 | } |
550 | |
1053 | |
551 | int ev_loop_done; |
1054 | void |
|
|
1055 | ev_ref (EV_P) |
|
|
1056 | { |
|
|
1057 | ++activecnt; |
|
|
1058 | } |
552 | |
1059 | |
|
|
1060 | void |
|
|
1061 | ev_unref (EV_P) |
|
|
1062 | { |
|
|
1063 | --activecnt; |
|
|
1064 | } |
|
|
1065 | |
|
|
1066 | static int loop_done; |
|
|
1067 | |
|
|
1068 | void |
553 | void ev_loop (int flags) |
1069 | ev_loop (EV_P_ int flags) |
554 | { |
1070 | { |
555 | double block; |
1071 | double block; |
556 | ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0; |
1072 | 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 | |
1073 | |
564 | do |
1074 | do |
565 | { |
1075 | { |
|
|
1076 | /* queue check watchers (and execute them) */ |
|
|
1077 | if (expect_false (preparecnt)) |
|
|
1078 | { |
|
|
1079 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
|
|
1080 | call_pending (EV_A); |
|
|
1081 | } |
|
|
1082 | |
|
|
1083 | /* we might have forked, so reify kernel state if necessary */ |
|
|
1084 | if (expect_false (postfork)) |
|
|
1085 | loop_fork (EV_A); |
|
|
1086 | |
566 | /* update fd-related kernel structures */ |
1087 | /* update fd-related kernel structures */ |
567 | fd_reify (); |
1088 | fd_reify (EV_A); |
568 | |
1089 | |
569 | /* calculate blocking time */ |
1090 | /* calculate blocking time */ |
570 | |
1091 | |
571 | /* we only need this for !monotonic clock, but as we always have timers, we just calculate it every time */ |
1092 | /* we only need this for !monotonic clockor timers, but as we basically |
|
|
1093 | always have timers, we just calculate it always */ |
|
|
1094 | #if EV_USE_MONOTONIC |
|
|
1095 | if (expect_true (have_monotonic)) |
|
|
1096 | time_update_monotonic (EV_A); |
|
|
1097 | else |
|
|
1098 | #endif |
|
|
1099 | { |
572 | ev_now = ev_time (); |
1100 | rt_now = ev_time (); |
|
|
1101 | mn_now = rt_now; |
|
|
1102 | } |
573 | |
1103 | |
574 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
1104 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
575 | block = 0.; |
1105 | block = 0.; |
576 | else |
1106 | else |
577 | { |
1107 | { |
578 | block = MAX_BLOCKTIME; |
1108 | block = MAX_BLOCKTIME; |
579 | |
1109 | |
580 | if (timercnt) |
1110 | if (timercnt) |
581 | { |
1111 | { |
582 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
1112 | ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; |
583 | if (block > to) block = to; |
1113 | if (block > to) block = to; |
584 | } |
1114 | } |
585 | |
1115 | |
586 | if (periodiccnt) |
1116 | if (periodiccnt) |
587 | { |
1117 | { |
588 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
1118 | ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge; |
589 | if (block > to) block = to; |
1119 | if (block > to) block = to; |
590 | } |
1120 | } |
591 | |
1121 | |
592 | if (block < 0.) block = 0.; |
1122 | if (block < 0.) block = 0.; |
593 | } |
1123 | } |
594 | |
1124 | |
595 | method_poll (block); |
1125 | method_poll (EV_A_ block); |
596 | |
1126 | |
597 | /* update ev_now, do magic */ |
1127 | /* update rt_now, do magic */ |
598 | time_update (); |
1128 | time_update (EV_A); |
599 | |
1129 | |
600 | /* queue pending timers and reschedule them */ |
1130 | /* queue pending timers and reschedule them */ |
|
|
1131 | timers_reify (EV_A); /* relative timers called last */ |
601 | periodics_reify (); /* absolute timers first */ |
1132 | periodics_reify (EV_A); /* absolute timers called first */ |
602 | timers_reify (); /* relative timers second */ |
|
|
603 | |
1133 | |
604 | /* queue idle watchers unless io or timers are pending */ |
1134 | /* queue idle watchers unless io or timers are pending */ |
605 | if (!pendingcnt) |
1135 | if (!pendingcnt) |
606 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
1136 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
607 | |
1137 | |
608 | /* queue check and possibly idle watchers */ |
1138 | /* queue check watchers, to be executed first */ |
|
|
1139 | if (checkcnt) |
609 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1140 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
610 | |
1141 | |
611 | call_pending (); |
1142 | call_pending (EV_A); |
612 | } |
1143 | } |
613 | while (!ev_loop_done); |
1144 | while (activecnt && !loop_done); |
614 | |
1145 | |
615 | if (ev_loop_done != 2) |
1146 | if (loop_done != 2) |
616 | ev_loop_done = 0; |
1147 | loop_done = 0; |
|
|
1148 | } |
|
|
1149 | |
|
|
1150 | void |
|
|
1151 | ev_unloop (EV_P_ int how) |
|
|
1152 | { |
|
|
1153 | loop_done = how; |
617 | } |
1154 | } |
618 | |
1155 | |
619 | /*****************************************************************************/ |
1156 | /*****************************************************************************/ |
620 | |
1157 | |
621 | static void |
1158 | inline void |
622 | wlist_add (WL *head, WL elem) |
1159 | wlist_add (WL *head, WL elem) |
623 | { |
1160 | { |
624 | elem->next = *head; |
1161 | elem->next = *head; |
625 | *head = elem; |
1162 | *head = elem; |
626 | } |
1163 | } |
627 | |
1164 | |
628 | static void |
1165 | inline void |
629 | wlist_del (WL *head, WL elem) |
1166 | wlist_del (WL *head, WL elem) |
630 | { |
1167 | { |
631 | while (*head) |
1168 | while (*head) |
632 | { |
1169 | { |
633 | if (*head == elem) |
1170 | if (*head == elem) |
… | |
… | |
638 | |
1175 | |
639 | head = &(*head)->next; |
1176 | head = &(*head)->next; |
640 | } |
1177 | } |
641 | } |
1178 | } |
642 | |
1179 | |
643 | static void |
1180 | inline void |
644 | ev_clear (W w) |
1181 | ev_clear_pending (EV_P_ W w) |
645 | { |
1182 | { |
646 | if (w->pending) |
1183 | if (w->pending) |
647 | { |
1184 | { |
648 | pendings [w->pending - 1].w = 0; |
1185 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
649 | w->pending = 0; |
1186 | w->pending = 0; |
650 | } |
1187 | } |
651 | } |
1188 | } |
652 | |
1189 | |
653 | static void |
1190 | inline void |
654 | ev_start (W w, int active) |
1191 | ev_start (EV_P_ W w, int active) |
655 | { |
1192 | { |
|
|
1193 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1194 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1195 | |
656 | w->active = active; |
1196 | w->active = active; |
|
|
1197 | ev_ref (EV_A); |
657 | } |
1198 | } |
658 | |
1199 | |
659 | static void |
1200 | inline void |
660 | ev_stop (W w) |
1201 | ev_stop (EV_P_ W w) |
661 | { |
1202 | { |
|
|
1203 | ev_unref (EV_A); |
662 | w->active = 0; |
1204 | w->active = 0; |
663 | } |
1205 | } |
664 | |
1206 | |
665 | /*****************************************************************************/ |
1207 | /*****************************************************************************/ |
666 | |
1208 | |
667 | void |
1209 | void |
668 | evio_start (struct ev_io *w) |
1210 | ev_io_start (EV_P_ struct ev_io *w) |
669 | { |
1211 | { |
|
|
1212 | int fd = w->fd; |
|
|
1213 | |
670 | if (ev_is_active (w)) |
1214 | if (ev_is_active (w)) |
671 | return; |
1215 | return; |
672 | |
1216 | |
673 | int fd = w->fd; |
1217 | assert (("ev_io_start called with negative fd", fd >= 0)); |
674 | |
1218 | |
675 | ev_start ((W)w, 1); |
1219 | ev_start (EV_A_ (W)w, 1); |
676 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1220 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
677 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1221 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
678 | |
1222 | |
679 | ++fdchangecnt; |
1223 | fd_change (EV_A_ fd); |
680 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
681 | fdchanges [fdchangecnt - 1] = fd; |
|
|
682 | } |
1224 | } |
683 | |
1225 | |
684 | void |
1226 | void |
685 | evio_stop (struct ev_io *w) |
1227 | ev_io_stop (EV_P_ struct ev_io *w) |
686 | { |
1228 | { |
687 | ev_clear ((W)w); |
1229 | ev_clear_pending (EV_A_ (W)w); |
688 | if (!ev_is_active (w)) |
1230 | if (!ev_is_active (w)) |
689 | return; |
1231 | return; |
690 | |
1232 | |
691 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1233 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
692 | ev_stop ((W)w); |
1234 | ev_stop (EV_A_ (W)w); |
693 | |
1235 | |
694 | ++fdchangecnt; |
1236 | fd_change (EV_A_ w->fd); |
695 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
696 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
697 | } |
1237 | } |
698 | |
1238 | |
699 | void |
1239 | void |
700 | evtimer_start (struct ev_timer *w) |
1240 | ev_timer_start (EV_P_ struct ev_timer *w) |
701 | { |
1241 | { |
702 | if (ev_is_active (w)) |
1242 | if (ev_is_active (w)) |
703 | return; |
1243 | return; |
704 | |
1244 | |
705 | w->at += now; |
1245 | ((WT)w)->at += mn_now; |
706 | |
1246 | |
707 | assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); |
1247 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
708 | |
1248 | |
709 | ev_start ((W)w, ++timercnt); |
1249 | ev_start (EV_A_ (W)w, ++timercnt); |
710 | array_needsize (timers, timermax, timercnt, ); |
1250 | array_needsize (timers, timermax, timercnt, (void)); |
711 | timers [timercnt - 1] = w; |
1251 | timers [timercnt - 1] = w; |
712 | upheap ((WT *)timers, timercnt - 1); |
1252 | upheap ((WT *)timers, timercnt - 1); |
713 | } |
|
|
714 | |
1253 | |
|
|
1254 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1255 | } |
|
|
1256 | |
715 | void |
1257 | void |
716 | evtimer_stop (struct ev_timer *w) |
1258 | ev_timer_stop (EV_P_ struct ev_timer *w) |
717 | { |
1259 | { |
718 | ev_clear ((W)w); |
1260 | ev_clear_pending (EV_A_ (W)w); |
719 | if (!ev_is_active (w)) |
1261 | if (!ev_is_active (w)) |
720 | return; |
1262 | return; |
721 | |
1263 | |
|
|
1264 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1265 | |
722 | if (w->active < timercnt--) |
1266 | if (((W)w)->active < timercnt--) |
723 | { |
1267 | { |
724 | timers [w->active - 1] = timers [timercnt]; |
1268 | timers [((W)w)->active - 1] = timers [timercnt]; |
725 | downheap ((WT *)timers, timercnt, w->active - 1); |
1269 | downheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
726 | } |
1270 | } |
727 | |
1271 | |
728 | w->at = w->repeat; |
1272 | ((WT)w)->at = w->repeat; |
729 | |
1273 | |
730 | ev_stop ((W)w); |
1274 | ev_stop (EV_A_ (W)w); |
731 | } |
1275 | } |
732 | |
1276 | |
733 | void |
1277 | void |
734 | evtimer_again (struct ev_timer *w) |
1278 | ev_timer_again (EV_P_ struct ev_timer *w) |
735 | { |
1279 | { |
736 | if (ev_is_active (w)) |
1280 | if (ev_is_active (w)) |
737 | { |
1281 | { |
738 | if (w->repeat) |
1282 | if (w->repeat) |
739 | { |
1283 | { |
740 | w->at = now + w->repeat; |
1284 | ((WT)w)->at = mn_now + w->repeat; |
741 | downheap ((WT *)timers, timercnt, w->active - 1); |
1285 | downheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
742 | } |
1286 | } |
743 | else |
1287 | else |
744 | evtimer_stop (w); |
1288 | ev_timer_stop (EV_A_ w); |
745 | } |
1289 | } |
746 | else if (w->repeat) |
1290 | else if (w->repeat) |
747 | evtimer_start (w); |
1291 | ev_timer_start (EV_A_ w); |
748 | } |
1292 | } |
749 | |
1293 | |
750 | void |
1294 | void |
751 | evperiodic_start (struct ev_periodic *w) |
1295 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
752 | { |
1296 | { |
753 | if (ev_is_active (w)) |
1297 | if (ev_is_active (w)) |
754 | return; |
1298 | return; |
755 | |
1299 | |
756 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
1300 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
757 | |
1301 | |
758 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1302 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
759 | if (w->interval) |
1303 | if (w->interval) |
760 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
1304 | ((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval; |
761 | |
1305 | |
762 | ev_start ((W)w, ++periodiccnt); |
1306 | ev_start (EV_A_ (W)w, ++periodiccnt); |
763 | array_needsize (periodics, periodicmax, periodiccnt, ); |
1307 | array_needsize (periodics, periodicmax, periodiccnt, (void)); |
764 | periodics [periodiccnt - 1] = w; |
1308 | periodics [periodiccnt - 1] = w; |
765 | upheap ((WT *)periodics, periodiccnt - 1); |
1309 | upheap ((WT *)periodics, periodiccnt - 1); |
766 | } |
|
|
767 | |
1310 | |
|
|
1311 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1312 | } |
|
|
1313 | |
768 | void |
1314 | void |
769 | evperiodic_stop (struct ev_periodic *w) |
1315 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
770 | { |
1316 | { |
771 | ev_clear ((W)w); |
1317 | ev_clear_pending (EV_A_ (W)w); |
772 | if (!ev_is_active (w)) |
1318 | if (!ev_is_active (w)) |
773 | return; |
1319 | return; |
774 | |
1320 | |
|
|
1321 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1322 | |
775 | if (w->active < periodiccnt--) |
1323 | if (((W)w)->active < periodiccnt--) |
776 | { |
1324 | { |
777 | periodics [w->active - 1] = periodics [periodiccnt]; |
1325 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
778 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
1326 | downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
779 | } |
1327 | } |
780 | |
1328 | |
781 | ev_stop ((W)w); |
1329 | ev_stop (EV_A_ (W)w); |
782 | } |
1330 | } |
783 | |
1331 | |
784 | void |
1332 | void |
785 | evsignal_start (struct ev_signal *w) |
1333 | ev_idle_start (EV_P_ struct ev_idle *w) |
786 | { |
1334 | { |
787 | if (ev_is_active (w)) |
1335 | if (ev_is_active (w)) |
788 | return; |
1336 | return; |
789 | |
1337 | |
|
|
1338 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1339 | array_needsize (idles, idlemax, idlecnt, (void)); |
|
|
1340 | idles [idlecnt - 1] = w; |
|
|
1341 | } |
|
|
1342 | |
|
|
1343 | void |
|
|
1344 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1345 | { |
|
|
1346 | ev_clear_pending (EV_A_ (W)w); |
|
|
1347 | if (ev_is_active (w)) |
|
|
1348 | return; |
|
|
1349 | |
|
|
1350 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
|
|
1351 | ev_stop (EV_A_ (W)w); |
|
|
1352 | } |
|
|
1353 | |
|
|
1354 | void |
|
|
1355 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1356 | { |
|
|
1357 | if (ev_is_active (w)) |
|
|
1358 | return; |
|
|
1359 | |
|
|
1360 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1361 | array_needsize (prepares, preparemax, preparecnt, (void)); |
|
|
1362 | prepares [preparecnt - 1] = w; |
|
|
1363 | } |
|
|
1364 | |
|
|
1365 | void |
|
|
1366 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1367 | { |
|
|
1368 | ev_clear_pending (EV_A_ (W)w); |
|
|
1369 | if (ev_is_active (w)) |
|
|
1370 | return; |
|
|
1371 | |
|
|
1372 | prepares [((W)w)->active - 1] = prepares [--preparecnt]; |
|
|
1373 | ev_stop (EV_A_ (W)w); |
|
|
1374 | } |
|
|
1375 | |
|
|
1376 | void |
|
|
1377 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1378 | { |
|
|
1379 | if (ev_is_active (w)) |
|
|
1380 | return; |
|
|
1381 | |
|
|
1382 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1383 | array_needsize (checks, checkmax, checkcnt, (void)); |
|
|
1384 | checks [checkcnt - 1] = w; |
|
|
1385 | } |
|
|
1386 | |
|
|
1387 | void |
|
|
1388 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1389 | { |
|
|
1390 | ev_clear_pending (EV_A_ (W)w); |
|
|
1391 | if (ev_is_active (w)) |
|
|
1392 | return; |
|
|
1393 | |
|
|
1394 | checks [((W)w)->active - 1] = checks [--checkcnt]; |
|
|
1395 | ev_stop (EV_A_ (W)w); |
|
|
1396 | } |
|
|
1397 | |
|
|
1398 | #ifndef SA_RESTART |
|
|
1399 | # define SA_RESTART 0 |
|
|
1400 | #endif |
|
|
1401 | |
|
|
1402 | void |
|
|
1403 | ev_signal_start (EV_P_ struct ev_signal *w) |
|
|
1404 | { |
|
|
1405 | #if EV_MULTIPLICITY |
|
|
1406 | assert (("signal watchers are only supported in the default loop", loop == default_loop)); |
|
|
1407 | #endif |
|
|
1408 | if (ev_is_active (w)) |
|
|
1409 | return; |
|
|
1410 | |
|
|
1411 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1412 | |
790 | ev_start ((W)w, 1); |
1413 | ev_start (EV_A_ (W)w, 1); |
791 | array_needsize (signals, signalmax, w->signum, signals_init); |
1414 | array_needsize (signals, signalmax, w->signum, signals_init); |
792 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1415 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
793 | |
1416 | |
794 | if (!w->next) |
1417 | if (!((WL)w)->next) |
795 | { |
1418 | { |
|
|
1419 | #if WIN32 |
|
|
1420 | signal (w->signum, sighandler); |
|
|
1421 | #else |
796 | struct sigaction sa; |
1422 | struct sigaction sa; |
797 | sa.sa_handler = sighandler; |
1423 | sa.sa_handler = sighandler; |
798 | sigfillset (&sa.sa_mask); |
1424 | sigfillset (&sa.sa_mask); |
799 | sa.sa_flags = 0; |
1425 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
800 | sigaction (w->signum, &sa, 0); |
1426 | sigaction (w->signum, &sa, 0); |
|
|
1427 | #endif |
801 | } |
1428 | } |
802 | } |
1429 | } |
803 | |
1430 | |
804 | void |
1431 | void |
805 | evsignal_stop (struct ev_signal *w) |
1432 | ev_signal_stop (EV_P_ struct ev_signal *w) |
806 | { |
1433 | { |
807 | ev_clear ((W)w); |
1434 | ev_clear_pending (EV_A_ (W)w); |
808 | if (!ev_is_active (w)) |
1435 | if (!ev_is_active (w)) |
809 | return; |
1436 | return; |
810 | |
1437 | |
811 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1438 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
812 | ev_stop ((W)w); |
1439 | ev_stop (EV_A_ (W)w); |
813 | |
1440 | |
814 | if (!signals [w->signum - 1].head) |
1441 | if (!signals [w->signum - 1].head) |
815 | signal (w->signum, SIG_DFL); |
1442 | signal (w->signum, SIG_DFL); |
816 | } |
1443 | } |
817 | |
1444 | |
818 | void evidle_start (struct ev_idle *w) |
1445 | void |
|
|
1446 | ev_child_start (EV_P_ struct ev_child *w) |
819 | { |
1447 | { |
|
|
1448 | #if EV_MULTIPLICITY |
|
|
1449 | assert (("child watchers are only supported in the default loop", loop == default_loop)); |
|
|
1450 | #endif |
820 | if (ev_is_active (w)) |
1451 | if (ev_is_active (w)) |
821 | return; |
1452 | return; |
822 | |
1453 | |
823 | ev_start ((W)w, ++idlecnt); |
1454 | ev_start (EV_A_ (W)w, 1); |
824 | array_needsize (idles, idlemax, idlecnt, ); |
1455 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
825 | idles [idlecnt - 1] = w; |
|
|
826 | } |
1456 | } |
827 | |
1457 | |
828 | void evidle_stop (struct ev_idle *w) |
1458 | void |
|
|
1459 | ev_child_stop (EV_P_ struct ev_child *w) |
829 | { |
1460 | { |
830 | ev_clear ((W)w); |
1461 | ev_clear_pending (EV_A_ (W)w); |
831 | if (ev_is_active (w)) |
1462 | if (ev_is_active (w)) |
832 | return; |
1463 | return; |
833 | |
1464 | |
834 | idles [w->active - 1] = idles [--idlecnt]; |
1465 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
835 | ev_stop ((W)w); |
1466 | 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 | } |
1467 | } |
857 | |
1468 | |
858 | /*****************************************************************************/ |
1469 | /*****************************************************************************/ |
859 | |
1470 | |
860 | struct ev_once |
1471 | struct ev_once |
… | |
… | |
864 | void (*cb)(int revents, void *arg); |
1475 | void (*cb)(int revents, void *arg); |
865 | void *arg; |
1476 | void *arg; |
866 | }; |
1477 | }; |
867 | |
1478 | |
868 | static void |
1479 | static void |
869 | once_cb (struct ev_once *once, int revents) |
1480 | once_cb (EV_P_ struct ev_once *once, int revents) |
870 | { |
1481 | { |
871 | void (*cb)(int revents, void *arg) = once->cb; |
1482 | void (*cb)(int revents, void *arg) = once->cb; |
872 | void *arg = once->arg; |
1483 | void *arg = once->arg; |
873 | |
1484 | |
874 | evio_stop (&once->io); |
1485 | ev_io_stop (EV_A_ &once->io); |
875 | evtimer_stop (&once->to); |
1486 | ev_timer_stop (EV_A_ &once->to); |
876 | free (once); |
1487 | ev_free (once); |
877 | |
1488 | |
878 | cb (revents, arg); |
1489 | cb (revents, arg); |
879 | } |
1490 | } |
880 | |
1491 | |
881 | static void |
1492 | static void |
882 | once_cb_io (struct ev_io *w, int revents) |
1493 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
883 | { |
1494 | { |
884 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1495 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
885 | } |
1496 | } |
886 | |
1497 | |
887 | static void |
1498 | static void |
888 | once_cb_to (struct ev_timer *w, int revents) |
1499 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
889 | { |
1500 | { |
890 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1501 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
891 | } |
1502 | } |
892 | |
1503 | |
893 | void |
1504 | void |
894 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1505 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
895 | { |
1506 | { |
896 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
1507 | struct ev_once *once = ev_malloc (sizeof (struct ev_once)); |
897 | |
1508 | |
898 | if (!once) |
1509 | if (!once) |
899 | cb (EV_ERROR, arg); |
1510 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
900 | else |
1511 | else |
901 | { |
1512 | { |
902 | once->cb = cb; |
1513 | once->cb = cb; |
903 | once->arg = arg; |
1514 | once->arg = arg; |
904 | |
1515 | |
905 | evw_init (&once->io, once_cb_io); |
1516 | ev_watcher_init (&once->io, once_cb_io); |
906 | |
|
|
907 | if (fd >= 0) |
1517 | if (fd >= 0) |
908 | { |
1518 | { |
909 | evio_set (&once->io, fd, events); |
1519 | ev_io_set (&once->io, fd, events); |
910 | evio_start (&once->io); |
1520 | ev_io_start (EV_A_ &once->io); |
911 | } |
1521 | } |
912 | |
1522 | |
913 | evw_init (&once->to, once_cb_to); |
1523 | ev_watcher_init (&once->to, once_cb_to); |
914 | |
|
|
915 | if (timeout >= 0.) |
1524 | if (timeout >= 0.) |
916 | { |
1525 | { |
917 | evtimer_set (&once->to, timeout, 0.); |
1526 | ev_timer_set (&once->to, timeout, 0.); |
918 | evtimer_start (&once->to); |
1527 | ev_timer_start (EV_A_ &once->to); |
919 | } |
1528 | } |
920 | } |
1529 | } |
921 | } |
1530 | } |
922 | |
1531 | |
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 | |
|
|