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 |
… | |
… | |
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 | */ |
29 | |
31 | |
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32 | #ifdef __cplusplus |
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33 | extern "C" { |
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34 | #endif |
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35 | |
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36 | #ifndef EV_STANDALONE |
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37 | # include "config.h" |
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38 | |
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39 | # if HAVE_CLOCK_GETTIME |
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40 | # ifndef EV_USE_MONOTONIC |
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41 | # define EV_USE_MONOTONIC 1 |
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42 | # endif |
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43 | # ifndef EV_USE_REALTIME |
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44 | # define EV_USE_REALTIME 1 |
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45 | # endif |
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46 | # else |
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47 | # ifndef EV_USE_MONOTONIC |
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48 | # define EV_USE_MONOTONIC 0 |
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49 | # endif |
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50 | # ifndef EV_USE_REALTIME |
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51 | # define EV_USE_REALTIME 0 |
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52 | # endif |
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53 | # endif |
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54 | |
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55 | # ifndef EV_USE_SELECT |
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56 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
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57 | # define EV_USE_SELECT 1 |
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58 | # else |
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59 | # define EV_USE_SELECT 0 |
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60 | # endif |
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61 | # endif |
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62 | |
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63 | # ifndef EV_USE_POLL |
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64 | # if HAVE_POLL && HAVE_POLL_H |
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65 | # define EV_USE_POLL 1 |
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66 | # else |
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67 | # define EV_USE_POLL 0 |
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68 | # endif |
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69 | # endif |
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70 | |
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71 | # ifndef EV_USE_EPOLL |
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72 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
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73 | # define EV_USE_EPOLL 1 |
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74 | # else |
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75 | # define EV_USE_EPOLL 0 |
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76 | # endif |
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77 | # endif |
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78 | |
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79 | # ifndef EV_USE_KQUEUE |
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80 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
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81 | # define EV_USE_KQUEUE 1 |
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82 | # else |
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83 | # define EV_USE_KQUEUE 0 |
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84 | # endif |
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85 | # endif |
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86 | |
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87 | # ifndef EV_USE_PORT |
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88 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
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89 | # define EV_USE_PORT 1 |
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90 | # else |
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91 | # define EV_USE_PORT 0 |
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92 | # endif |
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93 | # endif |
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94 | |
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95 | #endif |
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96 | |
30 | #include <math.h> |
97 | #include <math.h> |
31 | #include <stdlib.h> |
98 | #include <stdlib.h> |
32 | #include <unistd.h> |
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33 | #include <fcntl.h> |
99 | #include <fcntl.h> |
34 | #include <signal.h> |
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35 | #include <stddef.h> |
100 | #include <stddef.h> |
36 | |
101 | |
37 | #include <stdio.h> |
102 | #include <stdio.h> |
38 | |
103 | |
39 | #include <assert.h> |
104 | #include <assert.h> |
40 | #include <errno.h> |
105 | #include <errno.h> |
41 | #include <sys/types.h> |
106 | #include <sys/types.h> |
42 | #include <sys/wait.h> |
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43 | #include <sys/time.h> |
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44 | #include <time.h> |
107 | #include <time.h> |
45 | |
108 | |
46 | #ifndef HAVE_MONOTONIC |
109 | #include <signal.h> |
47 | # ifdef CLOCK_MONOTONIC |
110 | |
48 | # define HAVE_MONOTONIC 1 |
111 | #ifndef _WIN32 |
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112 | # include <unistd.h> |
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113 | # include <sys/time.h> |
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114 | # include <sys/wait.h> |
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115 | #else |
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116 | # define WIN32_LEAN_AND_MEAN |
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117 | # include <windows.h> |
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118 | # ifndef EV_SELECT_IS_WINSOCKET |
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119 | # define EV_SELECT_IS_WINSOCKET 1 |
49 | # endif |
120 | # endif |
50 | #endif |
121 | #endif |
51 | |
122 | |
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123 | /**/ |
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124 | |
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125 | #ifndef EV_USE_MONOTONIC |
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126 | # define EV_USE_MONOTONIC 0 |
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127 | #endif |
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128 | |
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129 | #ifndef EV_USE_REALTIME |
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130 | # define EV_USE_REALTIME 0 |
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131 | #endif |
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132 | |
52 | #ifndef HAVE_SELECT |
133 | #ifndef EV_USE_SELECT |
53 | # define HAVE_SELECT 1 |
134 | # define EV_USE_SELECT 1 |
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135 | #endif |
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136 | |
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137 | #ifndef EV_USE_POLL |
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138 | # ifdef _WIN32 |
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139 | # define EV_USE_POLL 0 |
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140 | # else |
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141 | # define EV_USE_POLL 1 |
54 | #endif |
142 | # endif |
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143 | #endif |
55 | |
144 | |
56 | #ifndef HAVE_EPOLL |
145 | #ifndef EV_USE_EPOLL |
57 | # define HAVE_EPOLL 0 |
146 | # define EV_USE_EPOLL 0 |
58 | #endif |
147 | #endif |
59 | |
148 | |
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149 | #ifndef EV_USE_KQUEUE |
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150 | # define EV_USE_KQUEUE 0 |
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151 | #endif |
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152 | |
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153 | #ifndef EV_USE_PORT |
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154 | # define EV_USE_PORT 0 |
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155 | #endif |
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156 | |
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157 | /**/ |
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158 | |
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159 | #ifndef CLOCK_MONOTONIC |
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160 | # undef EV_USE_MONOTONIC |
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161 | # define EV_USE_MONOTONIC 0 |
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162 | #endif |
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163 | |
60 | #ifndef HAVE_REALTIME |
164 | #ifndef CLOCK_REALTIME |
61 | # define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
165 | # undef EV_USE_REALTIME |
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166 | # define EV_USE_REALTIME 0 |
62 | #endif |
167 | #endif |
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168 | |
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169 | #if EV_SELECT_IS_WINSOCKET |
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170 | # include <winsock.h> |
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171 | #endif |
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172 | |
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173 | /**/ |
63 | |
174 | |
64 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
175 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
65 | #define MAX_BLOCKTIME 60. |
176 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
66 | #define PID_HASHSIZE 16 /* size of pid hahs table, must be power of two */ |
177 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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178 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ |
67 | |
179 | |
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180 | #ifdef EV_H |
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181 | # include EV_H |
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182 | #else |
68 | #include "ev.h" |
183 | # include "ev.h" |
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184 | #endif |
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185 | |
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186 | #if __GNUC__ >= 3 |
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187 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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188 | # define inline static inline |
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189 | #else |
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190 | # define expect(expr,value) (expr) |
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191 | # define inline static |
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192 | #endif |
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193 | |
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194 | #define expect_false(expr) expect ((expr) != 0, 0) |
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195 | #define expect_true(expr) expect ((expr) != 0, 1) |
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196 | |
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197 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
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198 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
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199 | |
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200 | #define EMPTY0 /* required for microsofts broken pseudo-c compiler */ |
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201 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
69 | |
202 | |
70 | typedef struct ev_watcher *W; |
203 | typedef struct ev_watcher *W; |
71 | typedef struct ev_watcher_list *WL; |
204 | typedef struct ev_watcher_list *WL; |
72 | typedef struct ev_watcher_time *WT; |
205 | typedef struct ev_watcher_time *WT; |
73 | |
206 | |
74 | static ev_tstamp now, diff; /* monotonic clock */ |
207 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
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208 | |
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209 | #ifdef _WIN32 |
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210 | # include "ev_win32.c" |
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211 | #endif |
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212 | |
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213 | /*****************************************************************************/ |
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214 | |
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215 | static void (*syserr_cb)(const char *msg); |
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216 | |
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217 | void ev_set_syserr_cb (void (*cb)(const char *msg)) |
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218 | { |
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219 | syserr_cb = cb; |
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220 | } |
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221 | |
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222 | static void |
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223 | syserr (const char *msg) |
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224 | { |
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225 | if (!msg) |
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226 | msg = "(libev) system error"; |
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227 | |
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228 | if (syserr_cb) |
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229 | syserr_cb (msg); |
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230 | else |
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231 | { |
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232 | perror (msg); |
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233 | abort (); |
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234 | } |
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235 | } |
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236 | |
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237 | static void *(*alloc)(void *ptr, long size); |
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238 | |
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239 | void ev_set_allocator (void *(*cb)(void *ptr, long size)) |
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240 | { |
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241 | alloc = cb; |
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242 | } |
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243 | |
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244 | static void * |
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245 | ev_realloc (void *ptr, long size) |
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246 | { |
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247 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
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248 | |
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249 | if (!ptr && size) |
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250 | { |
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251 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
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252 | abort (); |
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253 | } |
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254 | |
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255 | return ptr; |
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256 | } |
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257 | |
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258 | #define ev_malloc(size) ev_realloc (0, (size)) |
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259 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
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260 | |
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261 | /*****************************************************************************/ |
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262 | |
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263 | typedef struct |
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264 | { |
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265 | WL head; |
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266 | unsigned char events; |
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267 | unsigned char reify; |
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268 | #if EV_SELECT_IS_WINSOCKET |
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269 | SOCKET handle; |
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270 | #endif |
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271 | } ANFD; |
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272 | |
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273 | typedef struct |
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274 | { |
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275 | W w; |
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276 | int events; |
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277 | } ANPENDING; |
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278 | |
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279 | #if EV_MULTIPLICITY |
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280 | |
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281 | struct ev_loop |
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282 | { |
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283 | ev_tstamp ev_rt_now; |
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284 | #define ev_rt_now ((loop)->ev_rt_now) |
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285 | #define VAR(name,decl) decl; |
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286 | #include "ev_vars.h" |
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287 | #undef VAR |
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288 | }; |
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289 | #include "ev_wrap.h" |
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290 | |
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291 | static struct ev_loop default_loop_struct; |
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292 | struct ev_loop *ev_default_loop_ptr; |
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293 | |
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294 | #else |
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295 | |
75 | ev_tstamp ev_now; |
296 | ev_tstamp ev_rt_now; |
76 | int ev_method; |
297 | #define VAR(name,decl) static decl; |
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298 | #include "ev_vars.h" |
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299 | #undef VAR |
77 | |
300 | |
78 | static int have_monotonic; /* runtime */ |
301 | static int ev_default_loop_ptr; |
79 | |
302 | |
80 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
303 | #endif |
81 | static void (*method_modify)(int fd, int oev, int nev); |
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82 | static void (*method_poll)(ev_tstamp timeout); |
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83 | |
304 | |
84 | /*****************************************************************************/ |
305 | /*****************************************************************************/ |
85 | |
306 | |
86 | ev_tstamp |
307 | ev_tstamp |
87 | ev_time (void) |
308 | ev_time (void) |
88 | { |
309 | { |
89 | #if HAVE_REALTIME |
310 | #if EV_USE_REALTIME |
90 | struct timespec ts; |
311 | struct timespec ts; |
91 | clock_gettime (CLOCK_REALTIME, &ts); |
312 | clock_gettime (CLOCK_REALTIME, &ts); |
92 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
313 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
93 | #else |
314 | #else |
94 | struct timeval tv; |
315 | struct timeval tv; |
95 | gettimeofday (&tv, 0); |
316 | gettimeofday (&tv, 0); |
96 | return tv.tv_sec + tv.tv_usec * 1e-6; |
317 | return tv.tv_sec + tv.tv_usec * 1e-6; |
97 | #endif |
318 | #endif |
98 | } |
319 | } |
99 | |
320 | |
100 | static ev_tstamp |
321 | inline ev_tstamp |
101 | get_clock (void) |
322 | get_clock (void) |
102 | { |
323 | { |
103 | #if HAVE_MONOTONIC |
324 | #if EV_USE_MONOTONIC |
104 | if (have_monotonic) |
325 | if (expect_true (have_monotonic)) |
105 | { |
326 | { |
106 | struct timespec ts; |
327 | struct timespec ts; |
107 | clock_gettime (CLOCK_MONOTONIC, &ts); |
328 | clock_gettime (CLOCK_MONOTONIC, &ts); |
108 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
329 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
109 | } |
330 | } |
110 | #endif |
331 | #endif |
111 | |
332 | |
112 | return ev_time (); |
333 | return ev_time (); |
113 | } |
334 | } |
114 | |
335 | |
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336 | #if EV_MULTIPLICITY |
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337 | ev_tstamp |
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338 | ev_now (EV_P) |
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339 | { |
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340 | return ev_rt_now; |
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341 | } |
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342 | #endif |
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343 | |
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344 | #define array_roundsize(type,n) (((n) | 4) & ~3) |
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345 | |
115 | #define array_needsize(base,cur,cnt,init) \ |
346 | #define array_needsize(type,base,cur,cnt,init) \ |
116 | if ((cnt) > cur) \ |
347 | if (expect_false ((cnt) > cur)) \ |
117 | { \ |
348 | { \ |
118 | int newcnt = cur; \ |
349 | int newcnt = cur; \ |
119 | do \ |
350 | do \ |
120 | { \ |
351 | { \ |
121 | newcnt = (newcnt << 1) | 4 & ~3; \ |
352 | newcnt = array_roundsize (type, newcnt << 1); \ |
122 | } \ |
353 | } \ |
123 | while ((cnt) > newcnt); \ |
354 | while ((cnt) > newcnt); \ |
124 | \ |
355 | \ |
125 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
356 | base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\ |
126 | init (base + cur, newcnt - cur); \ |
357 | init (base + cur, newcnt - cur); \ |
127 | cur = newcnt; \ |
358 | cur = newcnt; \ |
128 | } |
359 | } |
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360 | |
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361 | #define array_slim(type,stem) \ |
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362 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
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363 | { \ |
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364 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
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365 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
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366 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
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367 | } |
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368 | |
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369 | #define array_free(stem, idx) \ |
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370 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
129 | |
371 | |
130 | /*****************************************************************************/ |
372 | /*****************************************************************************/ |
131 | |
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132 | typedef struct |
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133 | { |
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134 | struct ev_io *head; |
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135 | int events; |
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136 | } ANFD; |
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137 | |
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138 | static ANFD *anfds; |
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139 | static int anfdmax; |
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140 | |
373 | |
141 | static void |
374 | static void |
142 | anfds_init (ANFD *base, int count) |
375 | anfds_init (ANFD *base, int count) |
143 | { |
376 | { |
144 | while (count--) |
377 | while (count--) |
145 | { |
378 | { |
146 | base->head = 0; |
379 | base->head = 0; |
147 | base->events = EV_NONE; |
380 | base->events = EV_NONE; |
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381 | base->reify = 0; |
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382 | |
148 | ++base; |
383 | ++base; |
149 | } |
384 | } |
150 | } |
385 | } |
151 | |
386 | |
152 | typedef struct |
387 | void |
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388 | ev_feed_event (EV_P_ void *w, int revents) |
153 | { |
389 | { |
154 | W w; |
390 | W w_ = (W)w; |
155 | int events; |
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156 | } ANPENDING; |
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157 | |
391 | |
158 | static ANPENDING *pendings; |
392 | if (expect_false (w_->pending)) |
159 | static int pendingmax, pendingcnt; |
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160 | |
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161 | static void |
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162 | event (W w, int events) |
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163 | { |
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164 | if (w->active) |
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165 | { |
393 | { |
166 | w->pending = ++pendingcnt; |
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167 | array_needsize (pendings, pendingmax, pendingcnt, ); |
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168 | pendings [pendingcnt - 1].w = w; |
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169 | pendings [pendingcnt - 1].events = events; |
394 | pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; |
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395 | return; |
170 | } |
396 | } |
171 | } |
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172 | |
397 | |
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398 | w_->pending = ++pendingcnt [ABSPRI (w_)]; |
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399 | array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2); |
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400 | pendings [ABSPRI (w_)][w_->pending - 1].w = w_; |
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401 | pendings [ABSPRI (w_)][w_->pending - 1].events = revents; |
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402 | } |
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403 | |
173 | static void |
404 | static void |
174 | queue_events (W *events, int eventcnt, int type) |
405 | queue_events (EV_P_ W *events, int eventcnt, int type) |
175 | { |
406 | { |
176 | int i; |
407 | int i; |
177 | |
408 | |
178 | for (i = 0; i < eventcnt; ++i) |
409 | for (i = 0; i < eventcnt; ++i) |
179 | event (events [i], type); |
410 | ev_feed_event (EV_A_ events [i], type); |
180 | } |
411 | } |
181 | |
412 | |
182 | static void |
413 | inline void |
183 | fd_event (int fd, int events) |
414 | fd_event (EV_P_ int fd, int revents) |
184 | { |
415 | { |
185 | ANFD *anfd = anfds + fd; |
416 | ANFD *anfd = anfds + fd; |
186 | struct ev_io *w; |
417 | struct ev_io *w; |
187 | |
418 | |
188 | for (w = anfd->head; w; w = w->next) |
419 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
189 | { |
420 | { |
190 | int ev = w->events & events; |
421 | int ev = w->events & revents; |
191 | |
422 | |
192 | if (ev) |
423 | if (ev) |
193 | event ((W)w, ev); |
424 | ev_feed_event (EV_A_ (W)w, ev); |
194 | } |
425 | } |
|
|
426 | } |
|
|
427 | |
|
|
428 | void |
|
|
429 | ev_feed_fd_event (EV_P_ int fd, int revents) |
|
|
430 | { |
|
|
431 | fd_event (EV_A_ fd, revents); |
195 | } |
432 | } |
196 | |
433 | |
197 | /*****************************************************************************/ |
434 | /*****************************************************************************/ |
198 | |
435 | |
199 | static int *fdchanges; |
436 | inline void |
200 | static int fdchangemax, fdchangecnt; |
437 | fd_reify (EV_P) |
201 | |
|
|
202 | static void |
|
|
203 | fd_reify (void) |
|
|
204 | { |
438 | { |
205 | int i; |
439 | int i; |
206 | |
440 | |
207 | for (i = 0; i < fdchangecnt; ++i) |
441 | for (i = 0; i < fdchangecnt; ++i) |
208 | { |
442 | { |
… | |
… | |
210 | ANFD *anfd = anfds + fd; |
444 | ANFD *anfd = anfds + fd; |
211 | struct ev_io *w; |
445 | struct ev_io *w; |
212 | |
446 | |
213 | int events = 0; |
447 | int events = 0; |
214 | |
448 | |
215 | for (w = anfd->head; w; w = w->next) |
449 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
216 | events |= w->events; |
450 | events |= w->events; |
217 | |
451 | |
218 | anfd->events &= ~EV_REIFY; |
452 | #if EV_SELECT_IS_WINSOCKET |
219 | |
453 | if (events) |
220 | if (anfd->events != events) |
|
|
221 | { |
454 | { |
222 | method_modify (fd, anfd->events, events); |
455 | unsigned long argp; |
223 | anfd->events = events; |
456 | anfd->handle = _get_osfhandle (fd); |
|
|
457 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
224 | } |
458 | } |
|
|
459 | #endif |
|
|
460 | |
|
|
461 | anfd->reify = 0; |
|
|
462 | |
|
|
463 | backend_modify (EV_A_ fd, anfd->events, events); |
|
|
464 | anfd->events = events; |
225 | } |
465 | } |
226 | |
466 | |
227 | fdchangecnt = 0; |
467 | fdchangecnt = 0; |
228 | } |
468 | } |
229 | |
469 | |
230 | static void |
470 | static void |
231 | fd_change (int fd) |
471 | fd_change (EV_P_ int fd) |
232 | { |
472 | { |
233 | if (anfds [fd].events & EV_REIFY) |
473 | if (expect_false (anfds [fd].reify)) |
234 | return; |
474 | return; |
235 | |
475 | |
236 | anfds [fd].events |= EV_REIFY; |
476 | anfds [fd].reify = 1; |
237 | |
477 | |
238 | ++fdchangecnt; |
478 | ++fdchangecnt; |
239 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
479 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
240 | fdchanges [fdchangecnt - 1] = fd; |
480 | fdchanges [fdchangecnt - 1] = fd; |
241 | } |
481 | } |
242 | |
482 | |
|
|
483 | static void |
|
|
484 | fd_kill (EV_P_ int fd) |
|
|
485 | { |
|
|
486 | struct ev_io *w; |
|
|
487 | |
|
|
488 | while ((w = (struct ev_io *)anfds [fd].head)) |
|
|
489 | { |
|
|
490 | ev_io_stop (EV_A_ w); |
|
|
491 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
492 | } |
|
|
493 | } |
|
|
494 | |
|
|
495 | inline int |
|
|
496 | fd_valid (int fd) |
|
|
497 | { |
|
|
498 | #ifdef _WIN32 |
|
|
499 | return _get_osfhandle (fd) != -1; |
|
|
500 | #else |
|
|
501 | return fcntl (fd, F_GETFD) != -1; |
|
|
502 | #endif |
|
|
503 | } |
|
|
504 | |
243 | /* called on EBADF to verify fds */ |
505 | /* called on EBADF to verify fds */ |
244 | static void |
506 | static void |
245 | fd_recheck (void) |
507 | fd_ebadf (EV_P) |
246 | { |
508 | { |
247 | int fd; |
509 | int fd; |
248 | |
510 | |
249 | for (fd = 0; fd < anfdmax; ++fd) |
511 | for (fd = 0; fd < anfdmax; ++fd) |
250 | if (anfds [fd].events) |
512 | if (anfds [fd].events) |
251 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
513 | if (!fd_valid (fd) == -1 && errno == EBADF) |
252 | while (anfds [fd].head) |
514 | fd_kill (EV_A_ fd); |
|
|
515 | } |
|
|
516 | |
|
|
517 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
518 | static void |
|
|
519 | fd_enomem (EV_P) |
|
|
520 | { |
|
|
521 | int fd; |
|
|
522 | |
|
|
523 | for (fd = anfdmax; fd--; ) |
|
|
524 | if (anfds [fd].events) |
253 | { |
525 | { |
254 | event ((W)anfds [fd].head, EV_ERROR); |
526 | fd_kill (EV_A_ fd); |
255 | ev_io_stop (anfds [fd].head); |
527 | return; |
256 | } |
528 | } |
|
|
529 | } |
|
|
530 | |
|
|
531 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
|
|
532 | static void |
|
|
533 | fd_rearm_all (EV_P) |
|
|
534 | { |
|
|
535 | int fd; |
|
|
536 | |
|
|
537 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
538 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
539 | if (anfds [fd].events) |
|
|
540 | { |
|
|
541 | anfds [fd].events = 0; |
|
|
542 | fd_change (EV_A_ fd); |
|
|
543 | } |
257 | } |
544 | } |
258 | |
545 | |
259 | /*****************************************************************************/ |
546 | /*****************************************************************************/ |
260 | |
547 | |
261 | static struct ev_timer **timers; |
|
|
262 | static int timermax, timercnt; |
|
|
263 | |
|
|
264 | static struct ev_periodic **periodics; |
|
|
265 | static int periodicmax, periodiccnt; |
|
|
266 | |
|
|
267 | static void |
548 | static void |
268 | upheap (WT *timers, int k) |
549 | upheap (WT *heap, int k) |
269 | { |
550 | { |
270 | WT w = timers [k]; |
551 | WT w = heap [k]; |
271 | |
552 | |
272 | while (k && timers [k >> 1]->at > w->at) |
553 | while (k && heap [k >> 1]->at > w->at) |
273 | { |
554 | { |
274 | timers [k] = timers [k >> 1]; |
555 | heap [k] = heap [k >> 1]; |
275 | timers [k]->active = k + 1; |
556 | ((W)heap [k])->active = k + 1; |
276 | k >>= 1; |
557 | k >>= 1; |
277 | } |
558 | } |
278 | |
559 | |
279 | timers [k] = w; |
560 | heap [k] = w; |
280 | timers [k]->active = k + 1; |
561 | ((W)heap [k])->active = k + 1; |
281 | |
562 | |
282 | } |
563 | } |
283 | |
564 | |
284 | static void |
565 | static void |
285 | downheap (WT *timers, int N, int k) |
566 | downheap (WT *heap, int N, int k) |
286 | { |
567 | { |
287 | WT w = timers [k]; |
568 | WT w = heap [k]; |
288 | |
569 | |
289 | while (k < (N >> 1)) |
570 | while (k < (N >> 1)) |
290 | { |
571 | { |
291 | int j = k << 1; |
572 | int j = k << 1; |
292 | |
573 | |
293 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
574 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
294 | ++j; |
575 | ++j; |
295 | |
576 | |
296 | if (w->at <= timers [j]->at) |
577 | if (w->at <= heap [j]->at) |
297 | break; |
578 | break; |
298 | |
579 | |
299 | timers [k] = timers [j]; |
580 | heap [k] = heap [j]; |
300 | timers [k]->active = k + 1; |
581 | ((W)heap [k])->active = k + 1; |
301 | k = j; |
582 | k = j; |
302 | } |
583 | } |
303 | |
584 | |
304 | timers [k] = w; |
585 | heap [k] = w; |
305 | timers [k]->active = k + 1; |
586 | ((W)heap [k])->active = k + 1; |
|
|
587 | } |
|
|
588 | |
|
|
589 | inline void |
|
|
590 | adjustheap (WT *heap, int N, int k) |
|
|
591 | { |
|
|
592 | upheap (heap, k); |
|
|
593 | downheap (heap, N, k); |
306 | } |
594 | } |
307 | |
595 | |
308 | /*****************************************************************************/ |
596 | /*****************************************************************************/ |
309 | |
597 | |
310 | typedef struct |
598 | typedef struct |
311 | { |
599 | { |
312 | struct ev_signal *head; |
600 | WL head; |
313 | sig_atomic_t gotsig; |
601 | sig_atomic_t volatile gotsig; |
314 | } ANSIG; |
602 | } ANSIG; |
315 | |
603 | |
316 | static ANSIG *signals; |
604 | static ANSIG *signals; |
317 | static int signalmax; |
605 | static int signalmax; |
318 | |
606 | |
319 | static int sigpipe [2]; |
607 | static int sigpipe [2]; |
320 | static sig_atomic_t gotsig; |
608 | static sig_atomic_t volatile gotsig; |
321 | static struct ev_io sigev; |
609 | static struct ev_io sigev; |
322 | |
610 | |
323 | static void |
611 | static void |
324 | signals_init (ANSIG *base, int count) |
612 | signals_init (ANSIG *base, int count) |
325 | { |
613 | { |
326 | while (count--) |
614 | while (count--) |
327 | { |
615 | { |
328 | base->head = 0; |
616 | base->head = 0; |
329 | base->gotsig = 0; |
617 | base->gotsig = 0; |
|
|
618 | |
330 | ++base; |
619 | ++base; |
331 | } |
620 | } |
332 | } |
621 | } |
333 | |
622 | |
334 | static void |
623 | static void |
335 | sighandler (int signum) |
624 | sighandler (int signum) |
336 | { |
625 | { |
|
|
626 | #if _WIN32 |
|
|
627 | signal (signum, sighandler); |
|
|
628 | #endif |
|
|
629 | |
337 | signals [signum - 1].gotsig = 1; |
630 | signals [signum - 1].gotsig = 1; |
338 | |
631 | |
339 | if (!gotsig) |
632 | if (!gotsig) |
340 | { |
633 | { |
|
|
634 | int old_errno = errno; |
341 | gotsig = 1; |
635 | gotsig = 1; |
342 | write (sigpipe [1], &gotsig, 1); |
636 | write (sigpipe [1], &signum, 1); |
|
|
637 | errno = old_errno; |
343 | } |
638 | } |
344 | } |
639 | } |
345 | |
640 | |
|
|
641 | void |
|
|
642 | ev_feed_signal_event (EV_P_ int signum) |
|
|
643 | { |
|
|
644 | WL w; |
|
|
645 | |
|
|
646 | #if EV_MULTIPLICITY |
|
|
647 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
648 | #endif |
|
|
649 | |
|
|
650 | --signum; |
|
|
651 | |
|
|
652 | if (signum < 0 || signum >= signalmax) |
|
|
653 | return; |
|
|
654 | |
|
|
655 | signals [signum].gotsig = 0; |
|
|
656 | |
|
|
657 | for (w = signals [signum].head; w; w = w->next) |
|
|
658 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
659 | } |
|
|
660 | |
346 | static void |
661 | static void |
347 | sigcb (struct ev_io *iow, int revents) |
662 | sigcb (EV_P_ struct ev_io *iow, int revents) |
348 | { |
663 | { |
349 | struct ev_signal *w; |
|
|
350 | int sig; |
664 | int signum; |
351 | |
665 | |
|
|
666 | read (sigpipe [0], &revents, 1); |
352 | gotsig = 0; |
667 | gotsig = 0; |
353 | read (sigpipe [0], &revents, 1); |
|
|
354 | |
668 | |
355 | for (sig = signalmax; sig--; ) |
669 | for (signum = signalmax; signum--; ) |
356 | if (signals [sig].gotsig) |
670 | if (signals [signum].gotsig) |
357 | { |
671 | ev_feed_signal_event (EV_A_ signum + 1); |
358 | signals [sig].gotsig = 0; |
|
|
359 | |
|
|
360 | for (w = signals [sig].head; w; w = w->next) |
|
|
361 | event ((W)w, EV_SIGNAL); |
|
|
362 | } |
|
|
363 | } |
672 | } |
364 | |
673 | |
365 | static void |
674 | static void |
366 | siginit (void) |
675 | fd_intern (int fd) |
367 | { |
676 | { |
|
|
677 | #ifdef _WIN32 |
|
|
678 | int arg = 1; |
|
|
679 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
680 | #else |
368 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
681 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
369 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
370 | |
|
|
371 | /* rather than sort out wether we really need nb, set it */ |
|
|
372 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
682 | fcntl (fd, F_SETFL, O_NONBLOCK); |
373 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
683 | #endif |
|
|
684 | } |
|
|
685 | |
|
|
686 | static void |
|
|
687 | siginit (EV_P) |
|
|
688 | { |
|
|
689 | fd_intern (sigpipe [0]); |
|
|
690 | fd_intern (sigpipe [1]); |
374 | |
691 | |
375 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
692 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
376 | ev_io_start (&sigev); |
693 | ev_io_start (EV_A_ &sigev); |
|
|
694 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
377 | } |
695 | } |
378 | |
696 | |
379 | /*****************************************************************************/ |
697 | /*****************************************************************************/ |
380 | |
698 | |
381 | static struct ev_idle **idles; |
|
|
382 | static int idlemax, idlecnt; |
|
|
383 | |
|
|
384 | static struct ev_prepare **prepares; |
|
|
385 | static int preparemax, preparecnt; |
|
|
386 | |
|
|
387 | static struct ev_check **checks; |
|
|
388 | static int checkmax, checkcnt; |
|
|
389 | |
|
|
390 | /*****************************************************************************/ |
|
|
391 | |
|
|
392 | static struct ev_child *childs [PID_HASHSIZE]; |
699 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
700 | |
|
|
701 | #ifndef _WIN32 |
|
|
702 | |
393 | static struct ev_signal childev; |
703 | static struct ev_signal childev; |
394 | |
704 | |
395 | #ifndef WCONTINUED |
705 | #ifndef WCONTINUED |
396 | # define WCONTINUED 0 |
706 | # define WCONTINUED 0 |
397 | #endif |
707 | #endif |
398 | |
708 | |
399 | static void |
709 | static void |
400 | childcb (struct ev_signal *sw, int revents) |
710 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
401 | { |
711 | { |
402 | struct ev_child *w; |
712 | struct ev_child *w; |
|
|
713 | |
|
|
714 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
715 | if (w->pid == pid || !w->pid) |
|
|
716 | { |
|
|
717 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
|
|
718 | w->rpid = pid; |
|
|
719 | w->rstatus = status; |
|
|
720 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
721 | } |
|
|
722 | } |
|
|
723 | |
|
|
724 | static void |
|
|
725 | childcb (EV_P_ struct ev_signal *sw, int revents) |
|
|
726 | { |
403 | int pid, status; |
727 | int pid, status; |
404 | |
728 | |
405 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
729 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
406 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
730 | { |
407 | if (w->pid == pid || w->pid == -1) |
731 | /* make sure we are called again until all childs have been reaped */ |
408 | { |
732 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
409 | w->status = status; |
733 | |
410 | event ((W)w, EV_CHILD); |
734 | child_reap (EV_A_ sw, pid, pid, status); |
411 | } |
735 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
|
|
736 | } |
412 | } |
737 | } |
|
|
738 | |
|
|
739 | #endif |
413 | |
740 | |
414 | /*****************************************************************************/ |
741 | /*****************************************************************************/ |
415 | |
742 | |
|
|
743 | #if EV_USE_PORT |
|
|
744 | # include "ev_port.c" |
|
|
745 | #endif |
|
|
746 | #if EV_USE_KQUEUE |
|
|
747 | # include "ev_kqueue.c" |
|
|
748 | #endif |
416 | #if HAVE_EPOLL |
749 | #if EV_USE_EPOLL |
417 | # include "ev_epoll.c" |
750 | # include "ev_epoll.c" |
418 | #endif |
751 | #endif |
|
|
752 | #if EV_USE_POLL |
|
|
753 | # include "ev_poll.c" |
|
|
754 | #endif |
419 | #if HAVE_SELECT |
755 | #if EV_USE_SELECT |
420 | # include "ev_select.c" |
756 | # include "ev_select.c" |
421 | #endif |
757 | #endif |
422 | |
758 | |
423 | int |
759 | int |
424 | ev_version_major (void) |
760 | ev_version_major (void) |
… | |
… | |
430 | ev_version_minor (void) |
766 | ev_version_minor (void) |
431 | { |
767 | { |
432 | return EV_VERSION_MINOR; |
768 | return EV_VERSION_MINOR; |
433 | } |
769 | } |
434 | |
770 | |
435 | int ev_init (int flags) |
771 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
772 | static int |
|
|
773 | enable_secure (void) |
436 | { |
774 | { |
437 | if (!ev_method) |
775 | #ifdef _WIN32 |
|
|
776 | return 0; |
|
|
777 | #else |
|
|
778 | return getuid () != geteuid () |
|
|
779 | || getgid () != getegid (); |
|
|
780 | #endif |
|
|
781 | } |
|
|
782 | |
|
|
783 | unsigned int |
|
|
784 | ev_supported_backends (void) |
|
|
785 | { |
|
|
786 | unsigned int flags = 0; |
|
|
787 | |
|
|
788 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
789 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
790 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
791 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
792 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
793 | |
|
|
794 | return flags; |
|
|
795 | } |
|
|
796 | |
|
|
797 | unsigned int |
|
|
798 | ev_recommended_backends (void) |
|
|
799 | { |
|
|
800 | unsigned int flags = ev_recommended_backends (); |
|
|
801 | |
|
|
802 | #ifndef __NetBSD__ |
|
|
803 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
804 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
805 | flags &= ~EVBACKEND_KQUEUE; |
|
|
806 | #endif |
|
|
807 | #ifdef __APPLE__ |
|
|
808 | // flags &= ~EVBACKEND_KQUEUE; for documentation |
|
|
809 | flags &= ~EVBACKEND_POLL; |
|
|
810 | #endif |
|
|
811 | |
|
|
812 | return flags; |
|
|
813 | } |
|
|
814 | |
|
|
815 | unsigned int |
|
|
816 | ev_backend (EV_P) |
|
|
817 | { |
|
|
818 | return backend; |
|
|
819 | } |
|
|
820 | |
|
|
821 | static void |
|
|
822 | loop_init (EV_P_ unsigned int flags) |
|
|
823 | { |
|
|
824 | if (!backend) |
438 | { |
825 | { |
439 | #if HAVE_MONOTONIC |
826 | #if EV_USE_MONOTONIC |
440 | { |
827 | { |
441 | struct timespec ts; |
828 | struct timespec ts; |
442 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
829 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
443 | have_monotonic = 1; |
830 | have_monotonic = 1; |
444 | } |
831 | } |
445 | #endif |
832 | #endif |
446 | |
833 | |
447 | ev_now = ev_time (); |
834 | ev_rt_now = ev_time (); |
448 | now = get_clock (); |
835 | mn_now = get_clock (); |
|
|
836 | now_floor = mn_now; |
449 | diff = ev_now - now; |
837 | rtmn_diff = ev_rt_now - mn_now; |
450 | |
838 | |
|
|
839 | if (!(flags & EVFLAG_NOENV) |
|
|
840 | && !enable_secure () |
|
|
841 | && getenv ("LIBEV_FLAGS")) |
|
|
842 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
843 | |
|
|
844 | if (!(flags & 0x0000ffffUL)) |
|
|
845 | flags |= ev_recommended_backends (); |
|
|
846 | |
|
|
847 | backend = 0; |
|
|
848 | #if EV_USE_PORT |
|
|
849 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
850 | #endif |
|
|
851 | #if EV_USE_KQUEUE |
|
|
852 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
853 | #endif |
|
|
854 | #if EV_USE_EPOLL |
|
|
855 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
|
|
856 | #endif |
|
|
857 | #if EV_USE_POLL |
|
|
858 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
|
|
859 | #endif |
|
|
860 | #if EV_USE_SELECT |
|
|
861 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
|
|
862 | #endif |
|
|
863 | |
|
|
864 | ev_init (&sigev, sigcb); |
|
|
865 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
866 | } |
|
|
867 | } |
|
|
868 | |
|
|
869 | static void |
|
|
870 | loop_destroy (EV_P) |
|
|
871 | { |
|
|
872 | int i; |
|
|
873 | |
|
|
874 | #if EV_USE_PORT |
|
|
875 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
876 | #endif |
|
|
877 | #if EV_USE_KQUEUE |
|
|
878 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
879 | #endif |
|
|
880 | #if EV_USE_EPOLL |
|
|
881 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
882 | #endif |
|
|
883 | #if EV_USE_POLL |
|
|
884 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
885 | #endif |
|
|
886 | #if EV_USE_SELECT |
|
|
887 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
888 | #endif |
|
|
889 | |
|
|
890 | for (i = NUMPRI; i--; ) |
|
|
891 | array_free (pending, [i]); |
|
|
892 | |
|
|
893 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
894 | array_free (fdchange, EMPTY0); |
|
|
895 | array_free (timer, EMPTY0); |
|
|
896 | #if EV_PERIODICS |
|
|
897 | array_free (periodic, EMPTY0); |
|
|
898 | #endif |
|
|
899 | array_free (idle, EMPTY0); |
|
|
900 | array_free (prepare, EMPTY0); |
|
|
901 | array_free (check, EMPTY0); |
|
|
902 | |
|
|
903 | backend = 0; |
|
|
904 | } |
|
|
905 | |
|
|
906 | static void |
|
|
907 | loop_fork (EV_P) |
|
|
908 | { |
|
|
909 | #if EV_USE_PORT |
|
|
910 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
911 | #endif |
|
|
912 | #if EV_USE_KQUEUE |
|
|
913 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
914 | #endif |
|
|
915 | #if EV_USE_EPOLL |
|
|
916 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
917 | #endif |
|
|
918 | |
|
|
919 | if (ev_is_active (&sigev)) |
|
|
920 | { |
|
|
921 | /* default loop */ |
|
|
922 | |
|
|
923 | ev_ref (EV_A); |
|
|
924 | ev_io_stop (EV_A_ &sigev); |
|
|
925 | close (sigpipe [0]); |
|
|
926 | close (sigpipe [1]); |
|
|
927 | |
|
|
928 | while (pipe (sigpipe)) |
|
|
929 | syserr ("(libev) error creating pipe"); |
|
|
930 | |
|
|
931 | siginit (EV_A); |
|
|
932 | } |
|
|
933 | |
|
|
934 | postfork = 0; |
|
|
935 | } |
|
|
936 | |
|
|
937 | #if EV_MULTIPLICITY |
|
|
938 | struct ev_loop * |
|
|
939 | ev_loop_new (unsigned int flags) |
|
|
940 | { |
|
|
941 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
942 | |
|
|
943 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
944 | |
|
|
945 | loop_init (EV_A_ flags); |
|
|
946 | |
|
|
947 | if (ev_backend (EV_A)) |
|
|
948 | return loop; |
|
|
949 | |
|
|
950 | return 0; |
|
|
951 | } |
|
|
952 | |
|
|
953 | void |
|
|
954 | ev_loop_destroy (EV_P) |
|
|
955 | { |
|
|
956 | loop_destroy (EV_A); |
|
|
957 | ev_free (loop); |
|
|
958 | } |
|
|
959 | |
|
|
960 | void |
|
|
961 | ev_loop_fork (EV_P) |
|
|
962 | { |
|
|
963 | postfork = 1; |
|
|
964 | } |
|
|
965 | |
|
|
966 | #endif |
|
|
967 | |
|
|
968 | #if EV_MULTIPLICITY |
|
|
969 | struct ev_loop * |
|
|
970 | ev_default_loop_init (unsigned int flags) |
|
|
971 | #else |
|
|
972 | int |
|
|
973 | ev_default_loop (unsigned int flags) |
|
|
974 | #endif |
|
|
975 | { |
|
|
976 | if (sigpipe [0] == sigpipe [1]) |
451 | if (pipe (sigpipe)) |
977 | if (pipe (sigpipe)) |
452 | return 0; |
978 | return 0; |
453 | |
979 | |
454 | ev_method = EVMETHOD_NONE; |
980 | if (!ev_default_loop_ptr) |
455 | #if HAVE_EPOLL |
981 | { |
456 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
982 | #if EV_MULTIPLICITY |
|
|
983 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
|
|
984 | #else |
|
|
985 | ev_default_loop_ptr = 1; |
457 | #endif |
986 | #endif |
458 | #if HAVE_SELECT |
|
|
459 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
460 | #endif |
|
|
461 | |
987 | |
462 | if (ev_method) |
988 | loop_init (EV_A_ flags); |
|
|
989 | |
|
|
990 | if (ev_backend (EV_A)) |
463 | { |
991 | { |
464 | ev_watcher_init (&sigev, sigcb); |
|
|
465 | siginit (); |
992 | siginit (EV_A); |
466 | |
993 | |
|
|
994 | #ifndef _WIN32 |
467 | ev_signal_init (&childev, childcb, SIGCHLD); |
995 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
996 | ev_set_priority (&childev, EV_MAXPRI); |
468 | ev_signal_start (&childev); |
997 | ev_signal_start (EV_A_ &childev); |
|
|
998 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
999 | #endif |
469 | } |
1000 | } |
|
|
1001 | else |
|
|
1002 | ev_default_loop_ptr = 0; |
470 | } |
1003 | } |
471 | |
1004 | |
472 | return ev_method; |
1005 | return ev_default_loop_ptr; |
|
|
1006 | } |
|
|
1007 | |
|
|
1008 | void |
|
|
1009 | ev_default_destroy (void) |
|
|
1010 | { |
|
|
1011 | #if EV_MULTIPLICITY |
|
|
1012 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1013 | #endif |
|
|
1014 | |
|
|
1015 | #ifndef _WIN32 |
|
|
1016 | ev_ref (EV_A); /* child watcher */ |
|
|
1017 | ev_signal_stop (EV_A_ &childev); |
|
|
1018 | #endif |
|
|
1019 | |
|
|
1020 | ev_ref (EV_A); /* signal watcher */ |
|
|
1021 | ev_io_stop (EV_A_ &sigev); |
|
|
1022 | |
|
|
1023 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
1024 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
1025 | |
|
|
1026 | loop_destroy (EV_A); |
|
|
1027 | } |
|
|
1028 | |
|
|
1029 | void |
|
|
1030 | ev_default_fork (void) |
|
|
1031 | { |
|
|
1032 | #if EV_MULTIPLICITY |
|
|
1033 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1034 | #endif |
|
|
1035 | |
|
|
1036 | if (backend) |
|
|
1037 | postfork = 1; |
473 | } |
1038 | } |
474 | |
1039 | |
475 | /*****************************************************************************/ |
1040 | /*****************************************************************************/ |
476 | |
1041 | |
477 | void |
|
|
478 | ev_prefork (void) |
|
|
479 | { |
|
|
480 | /* nop */ |
|
|
481 | } |
|
|
482 | |
|
|
483 | void |
|
|
484 | ev_postfork_parent (void) |
|
|
485 | { |
|
|
486 | /* nop */ |
|
|
487 | } |
|
|
488 | |
|
|
489 | void |
|
|
490 | ev_postfork_child (void) |
|
|
491 | { |
|
|
492 | #if HAVE_EPOLL |
|
|
493 | if (ev_method == EVMETHOD_EPOLL) |
|
|
494 | epoll_postfork_child (); |
|
|
495 | #endif |
|
|
496 | |
|
|
497 | ev_io_stop (&sigev); |
|
|
498 | close (sigpipe [0]); |
|
|
499 | close (sigpipe [1]); |
|
|
500 | pipe (sigpipe); |
|
|
501 | siginit (); |
|
|
502 | } |
|
|
503 | |
|
|
504 | /*****************************************************************************/ |
|
|
505 | |
|
|
506 | static void |
1042 | static int |
|
|
1043 | any_pending (EV_P) |
|
|
1044 | { |
|
|
1045 | int pri; |
|
|
1046 | |
|
|
1047 | for (pri = NUMPRI; pri--; ) |
|
|
1048 | if (pendingcnt [pri]) |
|
|
1049 | return 1; |
|
|
1050 | |
|
|
1051 | return 0; |
|
|
1052 | } |
|
|
1053 | |
|
|
1054 | inline void |
507 | call_pending (void) |
1055 | call_pending (EV_P) |
508 | { |
1056 | { |
|
|
1057 | int pri; |
|
|
1058 | |
|
|
1059 | for (pri = NUMPRI; pri--; ) |
509 | while (pendingcnt) |
1060 | while (pendingcnt [pri]) |
510 | { |
1061 | { |
511 | ANPENDING *p = pendings + --pendingcnt; |
1062 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
512 | |
1063 | |
513 | if (p->w) |
1064 | if (expect_true (p->w)) |
514 | { |
1065 | { |
515 | p->w->pending = 0; |
1066 | p->w->pending = 0; |
516 | p->w->cb (p->w, p->events); |
1067 | EV_CB_INVOKE (p->w, p->events); |
517 | } |
1068 | } |
518 | } |
1069 | } |
519 | } |
1070 | } |
520 | |
1071 | |
521 | static void |
1072 | inline void |
522 | timers_reify (void) |
1073 | timers_reify (EV_P) |
523 | { |
1074 | { |
524 | while (timercnt && timers [0]->at <= now) |
1075 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
525 | { |
1076 | { |
526 | struct ev_timer *w = timers [0]; |
1077 | struct ev_timer *w = timers [0]; |
527 | |
1078 | |
528 | event ((W)w, EV_TIMEOUT); |
1079 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
529 | |
1080 | |
530 | /* first reschedule or stop timer */ |
1081 | /* first reschedule or stop timer */ |
531 | if (w->repeat) |
1082 | if (w->repeat) |
532 | { |
1083 | { |
|
|
1084 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
1085 | |
533 | w->at = now + w->repeat; |
1086 | ((WT)w)->at += w->repeat; |
534 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
1087 | if (((WT)w)->at < mn_now) |
|
|
1088 | ((WT)w)->at = mn_now; |
|
|
1089 | |
535 | downheap ((WT *)timers, timercnt, 0); |
1090 | downheap ((WT *)timers, timercnt, 0); |
536 | } |
1091 | } |
537 | else |
1092 | else |
538 | ev_timer_stop (w); /* nonrepeating: stop timer */ |
1093 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
539 | } |
|
|
540 | } |
|
|
541 | |
1094 | |
542 | static void |
1095 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
1096 | } |
|
|
1097 | } |
|
|
1098 | |
|
|
1099 | #if EV_PERIODICS |
|
|
1100 | inline void |
543 | periodics_reify (void) |
1101 | periodics_reify (EV_P) |
544 | { |
1102 | { |
545 | while (periodiccnt && periodics [0]->at <= ev_now) |
1103 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
546 | { |
1104 | { |
547 | struct ev_periodic *w = periodics [0]; |
1105 | struct ev_periodic *w = periodics [0]; |
548 | |
1106 | |
|
|
1107 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
|
|
1108 | |
549 | /* first reschedule or stop timer */ |
1109 | /* first reschedule or stop timer */ |
550 | if (w->interval) |
1110 | if (w->reschedule_cb) |
551 | { |
1111 | { |
|
|
1112 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); |
|
|
1113 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
|
|
1114 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1115 | } |
|
|
1116 | else if (w->interval) |
|
|
1117 | { |
552 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
1118 | ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
553 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
1119 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
554 | downheap ((WT *)periodics, periodiccnt, 0); |
1120 | downheap ((WT *)periodics, periodiccnt, 0); |
555 | } |
1121 | } |
556 | else |
1122 | else |
557 | ev_periodic_stop (w); /* nonrepeating: stop timer */ |
1123 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
558 | |
1124 | |
559 | event ((W)w, EV_TIMEOUT); |
1125 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
560 | } |
1126 | } |
561 | } |
1127 | } |
562 | |
1128 | |
563 | static void |
1129 | static void |
564 | periodics_reschedule (ev_tstamp diff) |
1130 | periodics_reschedule (EV_P) |
565 | { |
1131 | { |
566 | int i; |
1132 | int i; |
567 | |
1133 | |
568 | /* adjust periodics after time jump */ |
1134 | /* adjust periodics after time jump */ |
569 | for (i = 0; i < periodiccnt; ++i) |
1135 | for (i = 0; i < periodiccnt; ++i) |
570 | { |
1136 | { |
571 | struct ev_periodic *w = periodics [i]; |
1137 | struct ev_periodic *w = periodics [i]; |
572 | |
1138 | |
|
|
1139 | if (w->reschedule_cb) |
|
|
1140 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
573 | if (w->interval) |
1141 | else if (w->interval) |
|
|
1142 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1143 | } |
|
|
1144 | |
|
|
1145 | /* now rebuild the heap */ |
|
|
1146 | for (i = periodiccnt >> 1; i--; ) |
|
|
1147 | downheap ((WT *)periodics, periodiccnt, i); |
|
|
1148 | } |
|
|
1149 | #endif |
|
|
1150 | |
|
|
1151 | inline int |
|
|
1152 | time_update_monotonic (EV_P) |
|
|
1153 | { |
|
|
1154 | mn_now = get_clock (); |
|
|
1155 | |
|
|
1156 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
1157 | { |
|
|
1158 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1159 | return 0; |
|
|
1160 | } |
|
|
1161 | else |
|
|
1162 | { |
|
|
1163 | now_floor = mn_now; |
|
|
1164 | ev_rt_now = ev_time (); |
|
|
1165 | return 1; |
|
|
1166 | } |
|
|
1167 | } |
|
|
1168 | |
|
|
1169 | inline void |
|
|
1170 | time_update (EV_P) |
|
|
1171 | { |
|
|
1172 | int i; |
|
|
1173 | |
|
|
1174 | #if EV_USE_MONOTONIC |
|
|
1175 | if (expect_true (have_monotonic)) |
|
|
1176 | { |
|
|
1177 | if (time_update_monotonic (EV_A)) |
574 | { |
1178 | { |
575 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
1179 | ev_tstamp odiff = rtmn_diff; |
576 | |
1180 | |
577 | if (fabs (diff) >= 1e-4) |
1181 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
578 | { |
1182 | { |
579 | ev_periodic_stop (w); |
1183 | rtmn_diff = ev_rt_now - mn_now; |
580 | ev_periodic_start (w); |
|
|
581 | |
1184 | |
582 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
1185 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
|
|
1186 | return; /* all is well */ |
|
|
1187 | |
|
|
1188 | ev_rt_now = ev_time (); |
|
|
1189 | mn_now = get_clock (); |
|
|
1190 | now_floor = mn_now; |
583 | } |
1191 | } |
|
|
1192 | |
|
|
1193 | # if EV_PERIODICS |
|
|
1194 | periodics_reschedule (EV_A); |
|
|
1195 | # endif |
|
|
1196 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1197 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
584 | } |
1198 | } |
585 | } |
1199 | } |
586 | } |
1200 | else |
587 | |
1201 | #endif |
588 | static void |
1202 | { |
589 | time_update (void) |
|
|
590 | { |
|
|
591 | int i; |
|
|
592 | |
|
|
593 | ev_now = ev_time (); |
1203 | ev_rt_now = ev_time (); |
594 | |
1204 | |
595 | if (have_monotonic) |
1205 | if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
596 | { |
|
|
597 | ev_tstamp odiff = diff; |
|
|
598 | |
|
|
599 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
600 | { |
1206 | { |
601 | now = get_clock (); |
1207 | #if EV_PERIODICS |
602 | diff = ev_now - now; |
|
|
603 | |
|
|
604 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
|
|
605 | return; /* all is well */ |
|
|
606 | |
|
|
607 | ev_now = ev_time (); |
|
|
608 | } |
|
|
609 | |
|
|
610 | periodics_reschedule (diff - odiff); |
|
|
611 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
612 | } |
|
|
613 | else |
|
|
614 | { |
|
|
615 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
|
|
616 | { |
|
|
617 | periodics_reschedule (ev_now - now); |
1208 | periodics_reschedule (EV_A); |
|
|
1209 | #endif |
618 | |
1210 | |
619 | /* adjust timers. this is easy, as the offset is the same for all */ |
1211 | /* adjust timers. this is easy, as the offset is the same for all */ |
620 | for (i = 0; i < timercnt; ++i) |
1212 | for (i = 0; i < timercnt; ++i) |
621 | timers [i]->at += diff; |
1213 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
622 | } |
1214 | } |
623 | |
1215 | |
624 | now = ev_now; |
1216 | mn_now = ev_rt_now; |
625 | } |
1217 | } |
626 | } |
1218 | } |
627 | |
1219 | |
628 | int ev_loop_done; |
1220 | void |
|
|
1221 | ev_ref (EV_P) |
|
|
1222 | { |
|
|
1223 | ++activecnt; |
|
|
1224 | } |
629 | |
1225 | |
|
|
1226 | void |
|
|
1227 | ev_unref (EV_P) |
|
|
1228 | { |
|
|
1229 | --activecnt; |
|
|
1230 | } |
|
|
1231 | |
|
|
1232 | static int loop_done; |
|
|
1233 | |
|
|
1234 | void |
630 | void ev_loop (int flags) |
1235 | ev_loop (EV_P_ int flags) |
631 | { |
1236 | { |
632 | double block; |
1237 | double block; |
633 | ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
1238 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
634 | |
1239 | |
635 | do |
1240 | while (activecnt) |
636 | { |
1241 | { |
637 | /* queue check watchers (and execute them) */ |
1242 | /* queue check watchers (and execute them) */ |
638 | if (preparecnt) |
1243 | if (expect_false (preparecnt)) |
639 | { |
1244 | { |
640 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
1245 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
641 | call_pending (); |
1246 | call_pending (EV_A); |
642 | } |
1247 | } |
643 | |
1248 | |
|
|
1249 | /* we might have forked, so reify kernel state if necessary */ |
|
|
1250 | if (expect_false (postfork)) |
|
|
1251 | loop_fork (EV_A); |
|
|
1252 | |
644 | /* update fd-related kernel structures */ |
1253 | /* update fd-related kernel structures */ |
645 | fd_reify (); |
1254 | fd_reify (EV_A); |
646 | |
1255 | |
647 | /* calculate blocking time */ |
1256 | /* calculate blocking time */ |
648 | |
1257 | |
649 | /* we only need this for !monotonic clockor timers, but as we basically |
1258 | /* we only need this for !monotonic clock or timers, but as we basically |
650 | always have timers, we just calculate it always */ |
1259 | always have timers, we just calculate it always */ |
|
|
1260 | #if EV_USE_MONOTONIC |
|
|
1261 | if (expect_true (have_monotonic)) |
|
|
1262 | time_update_monotonic (EV_A); |
|
|
1263 | else |
|
|
1264 | #endif |
|
|
1265 | { |
651 | ev_now = ev_time (); |
1266 | ev_rt_now = ev_time (); |
|
|
1267 | mn_now = ev_rt_now; |
|
|
1268 | } |
652 | |
1269 | |
653 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
1270 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
654 | block = 0.; |
1271 | block = 0.; |
655 | else |
1272 | else |
656 | { |
1273 | { |
657 | block = MAX_BLOCKTIME; |
1274 | block = MAX_BLOCKTIME; |
658 | |
1275 | |
659 | if (timercnt) |
1276 | if (timercnt) |
660 | { |
1277 | { |
661 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
1278 | ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; |
662 | if (block > to) block = to; |
1279 | if (block > to) block = to; |
663 | } |
1280 | } |
664 | |
1281 | |
|
|
1282 | #if EV_PERIODICS |
665 | if (periodiccnt) |
1283 | if (periodiccnt) |
666 | { |
1284 | { |
667 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
1285 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; |
668 | if (block > to) block = to; |
1286 | if (block > to) block = to; |
669 | } |
1287 | } |
|
|
1288 | #endif |
670 | |
1289 | |
671 | if (block < 0.) block = 0.; |
1290 | if (expect_false (block < 0.)) block = 0.; |
672 | } |
1291 | } |
673 | |
1292 | |
674 | method_poll (block); |
1293 | backend_poll (EV_A_ block); |
675 | |
1294 | |
676 | /* update ev_now, do magic */ |
1295 | /* update ev_rt_now, do magic */ |
677 | time_update (); |
1296 | time_update (EV_A); |
678 | |
1297 | |
679 | /* queue pending timers and reschedule them */ |
1298 | /* queue pending timers and reschedule them */ |
680 | timers_reify (); /* relative timers called last */ |
1299 | timers_reify (EV_A); /* relative timers called last */ |
|
|
1300 | #if EV_PERIODICS |
681 | periodics_reify (); /* absolute timers called first */ |
1301 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
1302 | #endif |
682 | |
1303 | |
683 | /* queue idle watchers unless io or timers are pending */ |
1304 | /* queue idle watchers unless io or timers are pending */ |
684 | if (!pendingcnt) |
1305 | if (idlecnt && !any_pending (EV_A)) |
685 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
1306 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
686 | |
1307 | |
687 | /* queue check watchers, to be executed first */ |
1308 | /* queue check watchers, to be executed first */ |
688 | if (checkcnt) |
1309 | if (expect_false (checkcnt)) |
689 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1310 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
690 | |
1311 | |
691 | call_pending (); |
1312 | call_pending (EV_A); |
692 | } |
|
|
693 | while (!ev_loop_done); |
|
|
694 | |
1313 | |
|
|
1314 | if (expect_false (loop_done)) |
|
|
1315 | break; |
|
|
1316 | } |
|
|
1317 | |
695 | if (ev_loop_done != 2) |
1318 | if (loop_done != 2) |
696 | ev_loop_done = 0; |
1319 | loop_done = 0; |
|
|
1320 | } |
|
|
1321 | |
|
|
1322 | void |
|
|
1323 | ev_unloop (EV_P_ int how) |
|
|
1324 | { |
|
|
1325 | loop_done = how; |
697 | } |
1326 | } |
698 | |
1327 | |
699 | /*****************************************************************************/ |
1328 | /*****************************************************************************/ |
700 | |
1329 | |
701 | static void |
1330 | inline void |
702 | wlist_add (WL *head, WL elem) |
1331 | wlist_add (WL *head, WL elem) |
703 | { |
1332 | { |
704 | elem->next = *head; |
1333 | elem->next = *head; |
705 | *head = elem; |
1334 | *head = elem; |
706 | } |
1335 | } |
707 | |
1336 | |
708 | static void |
1337 | inline void |
709 | wlist_del (WL *head, WL elem) |
1338 | wlist_del (WL *head, WL elem) |
710 | { |
1339 | { |
711 | while (*head) |
1340 | while (*head) |
712 | { |
1341 | { |
713 | if (*head == elem) |
1342 | if (*head == elem) |
… | |
… | |
718 | |
1347 | |
719 | head = &(*head)->next; |
1348 | head = &(*head)->next; |
720 | } |
1349 | } |
721 | } |
1350 | } |
722 | |
1351 | |
723 | static void |
1352 | inline void |
724 | ev_clear (W w) |
1353 | ev_clear_pending (EV_P_ W w) |
725 | { |
1354 | { |
726 | if (w->pending) |
1355 | if (w->pending) |
727 | { |
1356 | { |
728 | pendings [w->pending - 1].w = 0; |
1357 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
729 | w->pending = 0; |
1358 | w->pending = 0; |
730 | } |
1359 | } |
731 | } |
1360 | } |
732 | |
1361 | |
733 | static void |
1362 | inline void |
734 | ev_start (W w, int active) |
1363 | ev_start (EV_P_ W w, int active) |
735 | { |
1364 | { |
|
|
1365 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1366 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1367 | |
736 | w->active = active; |
1368 | w->active = active; |
|
|
1369 | ev_ref (EV_A); |
737 | } |
1370 | } |
738 | |
1371 | |
739 | static void |
1372 | inline void |
740 | ev_stop (W w) |
1373 | ev_stop (EV_P_ W w) |
741 | { |
1374 | { |
|
|
1375 | ev_unref (EV_A); |
742 | w->active = 0; |
1376 | w->active = 0; |
743 | } |
1377 | } |
744 | |
1378 | |
745 | /*****************************************************************************/ |
1379 | /*****************************************************************************/ |
746 | |
1380 | |
747 | void |
1381 | void |
748 | ev_io_start (struct ev_io *w) |
1382 | ev_io_start (EV_P_ struct ev_io *w) |
749 | { |
1383 | { |
|
|
1384 | int fd = w->fd; |
|
|
1385 | |
750 | if (ev_is_active (w)) |
1386 | if (expect_false (ev_is_active (w))) |
751 | return; |
1387 | return; |
752 | |
1388 | |
753 | int fd = w->fd; |
1389 | assert (("ev_io_start called with negative fd", fd >= 0)); |
754 | |
1390 | |
755 | ev_start ((W)w, 1); |
1391 | ev_start (EV_A_ (W)w, 1); |
756 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1392 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
757 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1393 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
758 | |
1394 | |
759 | fd_change (fd); |
1395 | fd_change (EV_A_ fd); |
760 | } |
1396 | } |
761 | |
1397 | |
762 | void |
1398 | void |
763 | ev_io_stop (struct ev_io *w) |
1399 | ev_io_stop (EV_P_ struct ev_io *w) |
764 | { |
1400 | { |
765 | ev_clear ((W)w); |
1401 | ev_clear_pending (EV_A_ (W)w); |
766 | if (!ev_is_active (w)) |
1402 | if (expect_false (!ev_is_active (w))) |
767 | return; |
1403 | return; |
768 | |
1404 | |
|
|
1405 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
1406 | |
769 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1407 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
770 | ev_stop ((W)w); |
1408 | ev_stop (EV_A_ (W)w); |
771 | |
1409 | |
772 | fd_change (w->fd); |
1410 | fd_change (EV_A_ w->fd); |
773 | } |
1411 | } |
774 | |
1412 | |
775 | void |
1413 | void |
776 | ev_timer_start (struct ev_timer *w) |
1414 | ev_timer_start (EV_P_ struct ev_timer *w) |
777 | { |
1415 | { |
778 | if (ev_is_active (w)) |
1416 | if (expect_false (ev_is_active (w))) |
779 | return; |
1417 | return; |
780 | |
1418 | |
781 | w->at += now; |
1419 | ((WT)w)->at += mn_now; |
782 | |
1420 | |
783 | assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); |
1421 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
784 | |
1422 | |
785 | ev_start ((W)w, ++timercnt); |
1423 | ev_start (EV_A_ (W)w, ++timercnt); |
786 | array_needsize (timers, timermax, timercnt, ); |
1424 | array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2); |
787 | timers [timercnt - 1] = w; |
1425 | timers [timercnt - 1] = w; |
788 | upheap ((WT *)timers, timercnt - 1); |
1426 | upheap ((WT *)timers, timercnt - 1); |
789 | } |
|
|
790 | |
1427 | |
|
|
1428 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1429 | } |
|
|
1430 | |
791 | void |
1431 | void |
792 | ev_timer_stop (struct ev_timer *w) |
1432 | ev_timer_stop (EV_P_ struct ev_timer *w) |
793 | { |
1433 | { |
794 | ev_clear ((W)w); |
1434 | ev_clear_pending (EV_A_ (W)w); |
795 | if (!ev_is_active (w)) |
1435 | if (expect_false (!ev_is_active (w))) |
796 | return; |
1436 | return; |
797 | |
1437 | |
|
|
1438 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1439 | |
798 | if (w->active < timercnt--) |
1440 | if (expect_true (((W)w)->active < timercnt--)) |
799 | { |
1441 | { |
800 | timers [w->active - 1] = timers [timercnt]; |
1442 | timers [((W)w)->active - 1] = timers [timercnt]; |
801 | downheap ((WT *)timers, timercnt, w->active - 1); |
1443 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
802 | } |
1444 | } |
803 | |
1445 | |
804 | w->at = w->repeat; |
1446 | ((WT)w)->at -= mn_now; |
805 | |
1447 | |
806 | ev_stop ((W)w); |
1448 | ev_stop (EV_A_ (W)w); |
807 | } |
1449 | } |
808 | |
1450 | |
809 | void |
1451 | void |
810 | ev_timer_again (struct ev_timer *w) |
1452 | ev_timer_again (EV_P_ struct ev_timer *w) |
811 | { |
1453 | { |
812 | if (ev_is_active (w)) |
1454 | if (ev_is_active (w)) |
813 | { |
1455 | { |
814 | if (w->repeat) |
1456 | if (w->repeat) |
815 | { |
1457 | { |
816 | w->at = now + w->repeat; |
1458 | ((WT)w)->at = mn_now + w->repeat; |
817 | downheap ((WT *)timers, timercnt, w->active - 1); |
1459 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
818 | } |
1460 | } |
819 | else |
1461 | else |
820 | ev_timer_stop (w); |
1462 | ev_timer_stop (EV_A_ w); |
821 | } |
1463 | } |
822 | else if (w->repeat) |
1464 | else if (w->repeat) |
|
|
1465 | { |
|
|
1466 | w->at = w->repeat; |
823 | ev_timer_start (w); |
1467 | ev_timer_start (EV_A_ w); |
|
|
1468 | } |
824 | } |
1469 | } |
825 | |
1470 | |
|
|
1471 | #if EV_PERIODICS |
826 | void |
1472 | void |
827 | ev_periodic_start (struct ev_periodic *w) |
1473 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
828 | { |
1474 | { |
829 | if (ev_is_active (w)) |
1475 | if (expect_false (ev_is_active (w))) |
830 | return; |
1476 | return; |
831 | |
1477 | |
832 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
1478 | if (w->reschedule_cb) |
833 | |
1479 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1480 | else if (w->interval) |
|
|
1481 | { |
|
|
1482 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
834 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1483 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
835 | if (w->interval) |
|
|
836 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
1484 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1485 | } |
837 | |
1486 | |
838 | ev_start ((W)w, ++periodiccnt); |
1487 | ev_start (EV_A_ (W)w, ++periodiccnt); |
839 | array_needsize (periodics, periodicmax, periodiccnt, ); |
1488 | array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); |
840 | periodics [periodiccnt - 1] = w; |
1489 | periodics [periodiccnt - 1] = w; |
841 | upheap ((WT *)periodics, periodiccnt - 1); |
1490 | upheap ((WT *)periodics, periodiccnt - 1); |
842 | } |
|
|
843 | |
1491 | |
|
|
1492 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1493 | } |
|
|
1494 | |
844 | void |
1495 | void |
845 | ev_periodic_stop (struct ev_periodic *w) |
1496 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
846 | { |
1497 | { |
847 | ev_clear ((W)w); |
1498 | ev_clear_pending (EV_A_ (W)w); |
848 | if (!ev_is_active (w)) |
1499 | if (expect_false (!ev_is_active (w))) |
849 | return; |
1500 | return; |
850 | |
1501 | |
|
|
1502 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1503 | |
851 | if (w->active < periodiccnt--) |
1504 | if (expect_true (((W)w)->active < periodiccnt--)) |
852 | { |
1505 | { |
853 | periodics [w->active - 1] = periodics [periodiccnt]; |
1506 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
854 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
1507 | adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
855 | } |
1508 | } |
856 | |
1509 | |
857 | ev_stop ((W)w); |
1510 | ev_stop (EV_A_ (W)w); |
858 | } |
1511 | } |
859 | |
1512 | |
860 | void |
1513 | void |
|
|
1514 | ev_periodic_again (EV_P_ struct ev_periodic *w) |
|
|
1515 | { |
|
|
1516 | /* TODO: use adjustheap and recalculation */ |
|
|
1517 | ev_periodic_stop (EV_A_ w); |
|
|
1518 | ev_periodic_start (EV_A_ w); |
|
|
1519 | } |
|
|
1520 | #endif |
|
|
1521 | |
|
|
1522 | void |
861 | ev_signal_start (struct ev_signal *w) |
1523 | ev_idle_start (EV_P_ struct ev_idle *w) |
862 | { |
1524 | { |
863 | if (ev_is_active (w)) |
1525 | if (expect_false (ev_is_active (w))) |
864 | return; |
1526 | return; |
865 | |
1527 | |
|
|
1528 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1529 | array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2); |
|
|
1530 | idles [idlecnt - 1] = w; |
|
|
1531 | } |
|
|
1532 | |
|
|
1533 | void |
|
|
1534 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1535 | { |
|
|
1536 | ev_clear_pending (EV_A_ (W)w); |
|
|
1537 | if (expect_false (!ev_is_active (w))) |
|
|
1538 | return; |
|
|
1539 | |
|
|
1540 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
|
|
1541 | ev_stop (EV_A_ (W)w); |
|
|
1542 | } |
|
|
1543 | |
|
|
1544 | void |
|
|
1545 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1546 | { |
|
|
1547 | if (expect_false (ev_is_active (w))) |
|
|
1548 | return; |
|
|
1549 | |
|
|
1550 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1551 | array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
|
|
1552 | prepares [preparecnt - 1] = w; |
|
|
1553 | } |
|
|
1554 | |
|
|
1555 | void |
|
|
1556 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1557 | { |
|
|
1558 | ev_clear_pending (EV_A_ (W)w); |
|
|
1559 | if (expect_false (!ev_is_active (w))) |
|
|
1560 | return; |
|
|
1561 | |
|
|
1562 | prepares [((W)w)->active - 1] = prepares [--preparecnt]; |
|
|
1563 | ev_stop (EV_A_ (W)w); |
|
|
1564 | } |
|
|
1565 | |
|
|
1566 | void |
|
|
1567 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1568 | { |
|
|
1569 | if (expect_false (ev_is_active (w))) |
|
|
1570 | return; |
|
|
1571 | |
|
|
1572 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1573 | array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
1574 | checks [checkcnt - 1] = w; |
|
|
1575 | } |
|
|
1576 | |
|
|
1577 | void |
|
|
1578 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1579 | { |
|
|
1580 | ev_clear_pending (EV_A_ (W)w); |
|
|
1581 | if (expect_false (!ev_is_active (w))) |
|
|
1582 | return; |
|
|
1583 | |
|
|
1584 | checks [((W)w)->active - 1] = checks [--checkcnt]; |
|
|
1585 | ev_stop (EV_A_ (W)w); |
|
|
1586 | } |
|
|
1587 | |
|
|
1588 | #ifndef SA_RESTART |
|
|
1589 | # define SA_RESTART 0 |
|
|
1590 | #endif |
|
|
1591 | |
|
|
1592 | void |
|
|
1593 | ev_signal_start (EV_P_ struct ev_signal *w) |
|
|
1594 | { |
|
|
1595 | #if EV_MULTIPLICITY |
|
|
1596 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1597 | #endif |
|
|
1598 | if (expect_false (ev_is_active (w))) |
|
|
1599 | return; |
|
|
1600 | |
|
|
1601 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1602 | |
866 | ev_start ((W)w, 1); |
1603 | ev_start (EV_A_ (W)w, 1); |
867 | array_needsize (signals, signalmax, w->signum, signals_init); |
1604 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
868 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1605 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
869 | |
1606 | |
870 | if (!w->next) |
1607 | if (!((WL)w)->next) |
871 | { |
1608 | { |
|
|
1609 | #if _WIN32 |
|
|
1610 | signal (w->signum, sighandler); |
|
|
1611 | #else |
872 | struct sigaction sa; |
1612 | struct sigaction sa; |
873 | sa.sa_handler = sighandler; |
1613 | sa.sa_handler = sighandler; |
874 | sigfillset (&sa.sa_mask); |
1614 | sigfillset (&sa.sa_mask); |
875 | sa.sa_flags = 0; |
1615 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
876 | sigaction (w->signum, &sa, 0); |
1616 | sigaction (w->signum, &sa, 0); |
|
|
1617 | #endif |
877 | } |
1618 | } |
878 | } |
1619 | } |
879 | |
1620 | |
880 | void |
1621 | void |
881 | ev_signal_stop (struct ev_signal *w) |
1622 | ev_signal_stop (EV_P_ struct ev_signal *w) |
882 | { |
1623 | { |
883 | ev_clear ((W)w); |
1624 | ev_clear_pending (EV_A_ (W)w); |
884 | if (!ev_is_active (w)) |
1625 | if (expect_false (!ev_is_active (w))) |
885 | return; |
1626 | return; |
886 | |
1627 | |
887 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1628 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
888 | ev_stop ((W)w); |
1629 | ev_stop (EV_A_ (W)w); |
889 | |
1630 | |
890 | if (!signals [w->signum - 1].head) |
1631 | if (!signals [w->signum - 1].head) |
891 | signal (w->signum, SIG_DFL); |
1632 | signal (w->signum, SIG_DFL); |
892 | } |
1633 | } |
893 | |
1634 | |
894 | void |
1635 | void |
895 | ev_idle_start (struct ev_idle *w) |
1636 | ev_child_start (EV_P_ struct ev_child *w) |
896 | { |
1637 | { |
|
|
1638 | #if EV_MULTIPLICITY |
|
|
1639 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1640 | #endif |
897 | if (ev_is_active (w)) |
1641 | if (expect_false (ev_is_active (w))) |
898 | return; |
1642 | return; |
899 | |
1643 | |
900 | ev_start ((W)w, ++idlecnt); |
1644 | ev_start (EV_A_ (W)w, 1); |
901 | array_needsize (idles, idlemax, idlecnt, ); |
1645 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
902 | idles [idlecnt - 1] = w; |
|
|
903 | } |
1646 | } |
904 | |
1647 | |
905 | void |
1648 | void |
906 | ev_idle_stop (struct ev_idle *w) |
1649 | ev_child_stop (EV_P_ struct ev_child *w) |
907 | { |
1650 | { |
908 | ev_clear ((W)w); |
1651 | ev_clear_pending (EV_A_ (W)w); |
909 | if (ev_is_active (w)) |
1652 | if (expect_false (!ev_is_active (w))) |
910 | return; |
1653 | return; |
911 | |
1654 | |
912 | idles [w->active - 1] = idles [--idlecnt]; |
|
|
913 | ev_stop ((W)w); |
|
|
914 | } |
|
|
915 | |
|
|
916 | void |
|
|
917 | ev_prepare_start (struct ev_prepare *w) |
|
|
918 | { |
|
|
919 | if (ev_is_active (w)) |
|
|
920 | return; |
|
|
921 | |
|
|
922 | ev_start ((W)w, ++preparecnt); |
|
|
923 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
924 | prepares [preparecnt - 1] = w; |
|
|
925 | } |
|
|
926 | |
|
|
927 | void |
|
|
928 | ev_prepare_stop (struct ev_prepare *w) |
|
|
929 | { |
|
|
930 | ev_clear ((W)w); |
|
|
931 | if (ev_is_active (w)) |
|
|
932 | return; |
|
|
933 | |
|
|
934 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
935 | ev_stop ((W)w); |
|
|
936 | } |
|
|
937 | |
|
|
938 | void |
|
|
939 | ev_check_start (struct ev_check *w) |
|
|
940 | { |
|
|
941 | if (ev_is_active (w)) |
|
|
942 | return; |
|
|
943 | |
|
|
944 | ev_start ((W)w, ++checkcnt); |
|
|
945 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
946 | checks [checkcnt - 1] = w; |
|
|
947 | } |
|
|
948 | |
|
|
949 | void |
|
|
950 | ev_check_stop (struct ev_check *w) |
|
|
951 | { |
|
|
952 | ev_clear ((W)w); |
|
|
953 | if (ev_is_active (w)) |
|
|
954 | return; |
|
|
955 | |
|
|
956 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
957 | ev_stop ((W)w); |
|
|
958 | } |
|
|
959 | |
|
|
960 | void |
|
|
961 | ev_child_start (struct ev_child *w) |
|
|
962 | { |
|
|
963 | if (ev_is_active (w)) |
|
|
964 | return; |
|
|
965 | |
|
|
966 | ev_start ((W)w, 1); |
|
|
967 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
968 | } |
|
|
969 | |
|
|
970 | void |
|
|
971 | ev_child_stop (struct ev_child *w) |
|
|
972 | { |
|
|
973 | ev_clear ((W)w); |
|
|
974 | if (ev_is_active (w)) |
|
|
975 | return; |
|
|
976 | |
|
|
977 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
1655 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
978 | ev_stop ((W)w); |
1656 | ev_stop (EV_A_ (W)w); |
979 | } |
1657 | } |
980 | |
1658 | |
981 | /*****************************************************************************/ |
1659 | /*****************************************************************************/ |
982 | |
1660 | |
983 | struct ev_once |
1661 | struct ev_once |
… | |
… | |
987 | void (*cb)(int revents, void *arg); |
1665 | void (*cb)(int revents, void *arg); |
988 | void *arg; |
1666 | void *arg; |
989 | }; |
1667 | }; |
990 | |
1668 | |
991 | static void |
1669 | static void |
992 | once_cb (struct ev_once *once, int revents) |
1670 | once_cb (EV_P_ struct ev_once *once, int revents) |
993 | { |
1671 | { |
994 | void (*cb)(int revents, void *arg) = once->cb; |
1672 | void (*cb)(int revents, void *arg) = once->cb; |
995 | void *arg = once->arg; |
1673 | void *arg = once->arg; |
996 | |
1674 | |
997 | ev_io_stop (&once->io); |
1675 | ev_io_stop (EV_A_ &once->io); |
998 | ev_timer_stop (&once->to); |
1676 | ev_timer_stop (EV_A_ &once->to); |
999 | free (once); |
1677 | ev_free (once); |
1000 | |
1678 | |
1001 | cb (revents, arg); |
1679 | cb (revents, arg); |
1002 | } |
1680 | } |
1003 | |
1681 | |
1004 | static void |
1682 | static void |
1005 | once_cb_io (struct ev_io *w, int revents) |
1683 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
1006 | { |
1684 | { |
1007 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1685 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1008 | } |
1686 | } |
1009 | |
1687 | |
1010 | static void |
1688 | static void |
1011 | once_cb_to (struct ev_timer *w, int revents) |
1689 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
1012 | { |
1690 | { |
1013 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1691 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1014 | } |
1692 | } |
1015 | |
1693 | |
1016 | void |
1694 | void |
1017 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1695 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1018 | { |
1696 | { |
1019 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
1697 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
1020 | |
1698 | |
1021 | if (!once) |
1699 | if (expect_false (!once)) |
1022 | cb (EV_ERROR, arg); |
1700 | { |
1023 | else |
1701 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
|
|
1702 | return; |
1024 | { |
1703 | } |
|
|
1704 | |
1025 | once->cb = cb; |
1705 | once->cb = cb; |
1026 | once->arg = arg; |
1706 | once->arg = arg; |
1027 | |
1707 | |
1028 | ev_watcher_init (&once->io, once_cb_io); |
1708 | ev_init (&once->io, once_cb_io); |
1029 | |
|
|
1030 | if (fd >= 0) |
1709 | if (fd >= 0) |
1031 | { |
1710 | { |
1032 | ev_io_set (&once->io, fd, events); |
1711 | ev_io_set (&once->io, fd, events); |
1033 | ev_io_start (&once->io); |
1712 | ev_io_start (EV_A_ &once->io); |
1034 | } |
1713 | } |
1035 | |
1714 | |
1036 | ev_watcher_init (&once->to, once_cb_to); |
1715 | ev_init (&once->to, once_cb_to); |
1037 | |
|
|
1038 | if (timeout >= 0.) |
1716 | if (timeout >= 0.) |
1039 | { |
1717 | { |
1040 | ev_timer_set (&once->to, timeout, 0.); |
1718 | ev_timer_set (&once->to, timeout, 0.); |
1041 | ev_timer_start (&once->to); |
1719 | ev_timer_start (EV_A_ &once->to); |
1042 | } |
|
|
1043 | } |
|
|
1044 | } |
|
|
1045 | |
|
|
1046 | /*****************************************************************************/ |
|
|
1047 | |
|
|
1048 | #if 0 |
|
|
1049 | |
|
|
1050 | struct ev_io wio; |
|
|
1051 | |
|
|
1052 | static void |
|
|
1053 | sin_cb (struct ev_io *w, int revents) |
|
|
1054 | { |
|
|
1055 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
1056 | } |
|
|
1057 | |
|
|
1058 | static void |
|
|
1059 | ocb (struct ev_timer *w, int revents) |
|
|
1060 | { |
|
|
1061 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
1062 | ev_timer_stop (w); |
|
|
1063 | ev_timer_start (w); |
|
|
1064 | } |
|
|
1065 | |
|
|
1066 | static void |
|
|
1067 | scb (struct ev_signal *w, int revents) |
|
|
1068 | { |
|
|
1069 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
1070 | ev_io_stop (&wio); |
|
|
1071 | ev_io_start (&wio); |
|
|
1072 | } |
|
|
1073 | |
|
|
1074 | static void |
|
|
1075 | gcb (struct ev_signal *w, int revents) |
|
|
1076 | { |
|
|
1077 | fprintf (stderr, "generic %x\n", revents); |
|
|
1078 | |
|
|
1079 | } |
|
|
1080 | |
|
|
1081 | int main (void) |
|
|
1082 | { |
|
|
1083 | ev_init (0); |
|
|
1084 | |
|
|
1085 | ev_io_init (&wio, sin_cb, 0, EV_READ); |
|
|
1086 | ev_io_start (&wio); |
|
|
1087 | |
|
|
1088 | struct ev_timer t[10000]; |
|
|
1089 | |
|
|
1090 | #if 0 |
|
|
1091 | int i; |
|
|
1092 | for (i = 0; i < 10000; ++i) |
|
|
1093 | { |
1720 | } |
1094 | struct ev_timer *w = t + i; |
|
|
1095 | ev_watcher_init (w, ocb, i); |
|
|
1096 | ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
1097 | ev_timer_start (w); |
|
|
1098 | if (drand48 () < 0.5) |
|
|
1099 | ev_timer_stop (w); |
|
|
1100 | } |
|
|
1101 | #endif |
|
|
1102 | |
|
|
1103 | struct ev_timer t1; |
|
|
1104 | ev_timer_init (&t1, ocb, 5, 10); |
|
|
1105 | ev_timer_start (&t1); |
|
|
1106 | |
|
|
1107 | struct ev_signal sig; |
|
|
1108 | ev_signal_init (&sig, scb, SIGQUIT); |
|
|
1109 | ev_signal_start (&sig); |
|
|
1110 | |
|
|
1111 | struct ev_check cw; |
|
|
1112 | ev_check_init (&cw, gcb); |
|
|
1113 | ev_check_start (&cw); |
|
|
1114 | |
|
|
1115 | struct ev_idle iw; |
|
|
1116 | ev_idle_init (&iw, gcb); |
|
|
1117 | ev_idle_start (&iw); |
|
|
1118 | |
|
|
1119 | ev_loop (0); |
|
|
1120 | |
|
|
1121 | return 0; |
|
|
1122 | } |
1721 | } |
1123 | |
1722 | |
|
|
1723 | #ifdef __cplusplus |
|
|
1724 | } |
1124 | #endif |
1725 | #endif |
1125 | |
1726 | |
1126 | |
|
|
1127 | |
|
|
1128 | |
|
|