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/time.h> |
106 | #include <sys/types.h> |
42 | #include <time.h> |
107 | #include <time.h> |
43 | |
108 | |
44 | #define HAVE_EPOLL 1 |
109 | #include <signal.h> |
45 | |
110 | |
46 | #ifndef HAVE_MONOTONIC |
111 | #ifndef _WIN32 |
47 | # ifdef CLOCK_MONOTONIC |
112 | # include <unistd.h> |
48 | # define HAVE_MONOTONIC 1 |
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) */ |
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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 */ |
66 | |
179 | |
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180 | #ifdef EV_H |
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181 | # include EV_H |
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182 | #else |
67 | #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 */ |
68 | |
202 | |
69 | typedef struct ev_watcher *W; |
203 | typedef struct ev_watcher *W; |
70 | typedef struct ev_watcher_list *WL; |
204 | typedef struct ev_watcher_list *WL; |
71 | typedef struct ev_watcher_time *WT; |
205 | typedef struct ev_watcher_time *WT; |
72 | |
206 | |
73 | 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 | |
74 | ev_tstamp ev_now; |
296 | ev_tstamp ev_rt_now; |
75 | 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 |
76 | |
300 | |
77 | static int have_monotonic; /* runtime */ |
301 | static int ev_default_loop_ptr; |
78 | |
302 | |
79 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
303 | #endif |
80 | static void (*method_modify)(int fd, int oev, int nev); |
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81 | static void (*method_poll)(ev_tstamp timeout); |
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82 | |
304 | |
83 | /*****************************************************************************/ |
305 | /*****************************************************************************/ |
84 | |
306 | |
85 | ev_tstamp |
307 | ev_tstamp |
86 | ev_time (void) |
308 | ev_time (void) |
87 | { |
309 | { |
88 | #if HAVE_REALTIME |
310 | #if EV_USE_REALTIME |
89 | struct timespec ts; |
311 | struct timespec ts; |
90 | clock_gettime (CLOCK_REALTIME, &ts); |
312 | clock_gettime (CLOCK_REALTIME, &ts); |
91 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
313 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
92 | #else |
314 | #else |
93 | struct timeval tv; |
315 | struct timeval tv; |
94 | gettimeofday (&tv, 0); |
316 | gettimeofday (&tv, 0); |
95 | return tv.tv_sec + tv.tv_usec * 1e-6; |
317 | return tv.tv_sec + tv.tv_usec * 1e-6; |
96 | #endif |
318 | #endif |
97 | } |
319 | } |
98 | |
320 | |
99 | static ev_tstamp |
321 | inline ev_tstamp |
100 | get_clock (void) |
322 | get_clock (void) |
101 | { |
323 | { |
102 | #if HAVE_MONOTONIC |
324 | #if EV_USE_MONOTONIC |
103 | if (have_monotonic) |
325 | if (expect_true (have_monotonic)) |
104 | { |
326 | { |
105 | struct timespec ts; |
327 | struct timespec ts; |
106 | clock_gettime (CLOCK_MONOTONIC, &ts); |
328 | clock_gettime (CLOCK_MONOTONIC, &ts); |
107 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
329 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
108 | } |
330 | } |
109 | #endif |
331 | #endif |
110 | |
332 | |
111 | return ev_time (); |
333 | return ev_time (); |
112 | } |
334 | } |
113 | |
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 | |
114 | #define array_needsize(base,cur,cnt,init) \ |
346 | #define array_needsize(type,base,cur,cnt,init) \ |
115 | if ((cnt) > cur) \ |
347 | if (expect_false ((cnt) > cur)) \ |
116 | { \ |
348 | { \ |
117 | int newcnt = cur ? cur << 1 : 16; \ |
349 | int newcnt = cur; \ |
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350 | do \ |
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351 | { \ |
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352 | newcnt = array_roundsize (type, newcnt << 1); \ |
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353 | } \ |
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354 | while ((cnt) > newcnt); \ |
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355 | \ |
118 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
356 | base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\ |
119 | init (base + cur, newcnt - cur); \ |
357 | init (base + cur, newcnt - cur); \ |
120 | cur = newcnt; \ |
358 | cur = newcnt; \ |
121 | } |
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; |
122 | |
371 | |
123 | /*****************************************************************************/ |
372 | /*****************************************************************************/ |
124 | |
373 | |
125 | typedef struct |
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126 | { |
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127 | struct ev_io *head; |
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128 | unsigned char wev, rev; /* want, received event set */ |
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129 | } ANFD; |
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130 | |
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131 | static ANFD *anfds; |
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132 | static int anfdmax; |
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133 | |
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134 | static int *fdchanges; |
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135 | static int fdchangemax, fdchangecnt; |
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136 | |
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137 | static void |
374 | static void |
138 | anfds_init (ANFD *base, int count) |
375 | anfds_init (ANFD *base, int count) |
139 | { |
376 | { |
140 | while (count--) |
377 | while (count--) |
141 | { |
378 | { |
142 | base->head = 0; |
379 | base->head = 0; |
143 | base->wev = base->rev = EV_NONE; |
380 | base->events = EV_NONE; |
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381 | base->reify = 0; |
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382 | |
144 | ++base; |
383 | ++base; |
145 | } |
384 | } |
146 | } |
385 | } |
147 | |
386 | |
148 | typedef struct |
387 | void |
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388 | ev_feed_event (EV_P_ void *w, int revents) |
149 | { |
389 | { |
150 | W w; |
390 | W w_ = (W)w; |
151 | int events; |
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152 | } ANPENDING; |
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153 | |
391 | |
154 | static ANPENDING *pendings; |
392 | if (expect_false (w_->pending)) |
155 | static int pendingmax, pendingcnt; |
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156 | |
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157 | static void |
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158 | event (W w, int events) |
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159 | { |
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160 | if (w->active) |
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161 | { |
393 | { |
162 | w->pending = ++pendingcnt; |
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163 | array_needsize (pendings, pendingmax, pendingcnt, ); |
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164 | pendings [pendingcnt - 1].w = w; |
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165 | pendings [pendingcnt - 1].events = events; |
394 | pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; |
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395 | return; |
166 | } |
396 | } |
167 | } |
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168 | |
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 | |
169 | static void |
404 | static void |
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405 | queue_events (EV_P_ W *events, int eventcnt, int type) |
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406 | { |
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407 | int i; |
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408 | |
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409 | for (i = 0; i < eventcnt; ++i) |
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410 | ev_feed_event (EV_A_ events [i], type); |
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411 | } |
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412 | |
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413 | inline void |
170 | fd_event (int fd, int events) |
414 | fd_event (EV_P_ int fd, int revents) |
171 | { |
415 | { |
172 | ANFD *anfd = anfds + fd; |
416 | ANFD *anfd = anfds + fd; |
173 | struct ev_io *w; |
417 | struct ev_io *w; |
174 | |
418 | |
175 | for (w = anfd->head; w; w = w->next) |
419 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
176 | { |
420 | { |
177 | int ev = w->events & events; |
421 | int ev = w->events & revents; |
178 | |
422 | |
179 | if (ev) |
423 | if (ev) |
180 | event ((W)w, ev); |
424 | ev_feed_event (EV_A_ (W)w, ev); |
181 | } |
425 | } |
182 | } |
426 | } |
183 | |
427 | |
184 | static void |
428 | void |
185 | queue_events (W *events, int eventcnt, int type) |
429 | ev_feed_fd_event (EV_P_ int fd, int revents) |
186 | { |
430 | { |
187 | int i; |
431 | fd_event (EV_A_ fd, revents); |
188 | |
|
|
189 | for (i = 0; i < eventcnt; ++i) |
|
|
190 | event (events [i], type); |
|
|
191 | } |
432 | } |
192 | |
433 | |
193 | /*****************************************************************************/ |
434 | /*****************************************************************************/ |
194 | |
435 | |
195 | static struct ev_timer **timers; |
436 | inline void |
196 | static int timermax, timercnt; |
437 | fd_reify (EV_P) |
197 | |
|
|
198 | static struct ev_periodic **periodics; |
|
|
199 | static int periodicmax, periodiccnt; |
|
|
200 | |
|
|
201 | static void |
|
|
202 | upheap (WT *timers, int k) |
|
|
203 | { |
|
|
204 | WT w = timers [k]; |
|
|
205 | |
|
|
206 | while (k && timers [k >> 1]->at > w->at) |
|
|
207 | { |
|
|
208 | timers [k] = timers [k >> 1]; |
|
|
209 | timers [k]->active = k + 1; |
|
|
210 | k >>= 1; |
|
|
211 | } |
|
|
212 | |
|
|
213 | timers [k] = w; |
|
|
214 | timers [k]->active = k + 1; |
|
|
215 | |
|
|
216 | } |
|
|
217 | |
|
|
218 | static void |
|
|
219 | downheap (WT *timers, int N, int k) |
|
|
220 | { |
|
|
221 | WT w = timers [k]; |
|
|
222 | |
|
|
223 | while (k < (N >> 1)) |
|
|
224 | { |
|
|
225 | int j = k << 1; |
|
|
226 | |
|
|
227 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
|
|
228 | ++j; |
|
|
229 | |
|
|
230 | if (w->at <= timers [j]->at) |
|
|
231 | break; |
|
|
232 | |
|
|
233 | timers [k] = timers [j]; |
|
|
234 | timers [k]->active = k + 1; |
|
|
235 | k = j; |
|
|
236 | } |
|
|
237 | |
|
|
238 | timers [k] = w; |
|
|
239 | timers [k]->active = k + 1; |
|
|
240 | } |
|
|
241 | |
|
|
242 | /*****************************************************************************/ |
|
|
243 | |
|
|
244 | typedef struct |
|
|
245 | { |
|
|
246 | struct ev_signal *head; |
|
|
247 | sig_atomic_t gotsig; |
|
|
248 | } ANSIG; |
|
|
249 | |
|
|
250 | static ANSIG *signals; |
|
|
251 | static int signalmax; |
|
|
252 | |
|
|
253 | static int sigpipe [2]; |
|
|
254 | static sig_atomic_t gotsig; |
|
|
255 | static struct ev_io sigev; |
|
|
256 | |
|
|
257 | static void |
|
|
258 | signals_init (ANSIG *base, int count) |
|
|
259 | { |
|
|
260 | while (count--) |
|
|
261 | { |
|
|
262 | base->head = 0; |
|
|
263 | base->gotsig = 0; |
|
|
264 | ++base; |
|
|
265 | } |
|
|
266 | } |
|
|
267 | |
|
|
268 | static void |
|
|
269 | sighandler (int signum) |
|
|
270 | { |
|
|
271 | signals [signum - 1].gotsig = 1; |
|
|
272 | |
|
|
273 | if (!gotsig) |
|
|
274 | { |
|
|
275 | gotsig = 1; |
|
|
276 | write (sigpipe [1], &gotsig, 1); |
|
|
277 | } |
|
|
278 | } |
|
|
279 | |
|
|
280 | static void |
|
|
281 | sigcb (struct ev_io *iow, int revents) |
|
|
282 | { |
|
|
283 | struct ev_signal *w; |
|
|
284 | int sig; |
|
|
285 | |
|
|
286 | gotsig = 0; |
|
|
287 | read (sigpipe [0], &revents, 1); |
|
|
288 | |
|
|
289 | for (sig = signalmax; sig--; ) |
|
|
290 | if (signals [sig].gotsig) |
|
|
291 | { |
|
|
292 | signals [sig].gotsig = 0; |
|
|
293 | |
|
|
294 | for (w = signals [sig].head; w; w = w->next) |
|
|
295 | event ((W)w, EV_SIGNAL); |
|
|
296 | } |
|
|
297 | } |
|
|
298 | |
|
|
299 | static void |
|
|
300 | siginit (void) |
|
|
301 | { |
|
|
302 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
|
|
303 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
304 | |
|
|
305 | /* rather than sort out wether we really need nb, set it */ |
|
|
306 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
|
|
307 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
308 | |
|
|
309 | evio_set (&sigev, sigpipe [0], EV_READ); |
|
|
310 | evio_start (&sigev); |
|
|
311 | } |
|
|
312 | |
|
|
313 | /*****************************************************************************/ |
|
|
314 | |
|
|
315 | static struct ev_idle **idles; |
|
|
316 | static int idlemax, idlecnt; |
|
|
317 | |
|
|
318 | static struct ev_check **checks; |
|
|
319 | static int checkmax, checkcnt; |
|
|
320 | |
|
|
321 | /*****************************************************************************/ |
|
|
322 | |
|
|
323 | #if HAVE_EPOLL |
|
|
324 | # include "ev_epoll.c" |
|
|
325 | #endif |
|
|
326 | #if HAVE_SELECT |
|
|
327 | # include "ev_select.c" |
|
|
328 | #endif |
|
|
329 | |
|
|
330 | int ev_init (int flags) |
|
|
331 | { |
|
|
332 | #if HAVE_MONOTONIC |
|
|
333 | { |
|
|
334 | struct timespec ts; |
|
|
335 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
336 | have_monotonic = 1; |
|
|
337 | } |
|
|
338 | #endif |
|
|
339 | |
|
|
340 | ev_now = ev_time (); |
|
|
341 | now = get_clock (); |
|
|
342 | diff = ev_now - now; |
|
|
343 | |
|
|
344 | if (pipe (sigpipe)) |
|
|
345 | return 0; |
|
|
346 | |
|
|
347 | ev_method = EVMETHOD_NONE; |
|
|
348 | #if HAVE_EPOLL |
|
|
349 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
|
|
350 | #endif |
|
|
351 | #if HAVE_SELECT |
|
|
352 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
353 | #endif |
|
|
354 | |
|
|
355 | if (ev_method) |
|
|
356 | { |
|
|
357 | evw_init (&sigev, sigcb); |
|
|
358 | siginit (); |
|
|
359 | } |
|
|
360 | |
|
|
361 | return ev_method; |
|
|
362 | } |
|
|
363 | |
|
|
364 | /*****************************************************************************/ |
|
|
365 | |
|
|
366 | void ev_prefork (void) |
|
|
367 | { |
|
|
368 | /* nop */ |
|
|
369 | } |
|
|
370 | |
|
|
371 | void ev_postfork_parent (void) |
|
|
372 | { |
|
|
373 | /* nop */ |
|
|
374 | } |
|
|
375 | |
|
|
376 | void ev_postfork_child (void) |
|
|
377 | { |
|
|
378 | #if HAVE_EPOLL |
|
|
379 | if (ev_method == EVMETHOD_EPOLL) |
|
|
380 | epoll_postfork_child (); |
|
|
381 | #endif |
|
|
382 | |
|
|
383 | evio_stop (&sigev); |
|
|
384 | close (sigpipe [0]); |
|
|
385 | close (sigpipe [1]); |
|
|
386 | pipe (sigpipe); |
|
|
387 | siginit (); |
|
|
388 | } |
|
|
389 | |
|
|
390 | /*****************************************************************************/ |
|
|
391 | |
|
|
392 | static void |
|
|
393 | fd_reify (void) |
|
|
394 | { |
438 | { |
395 | int i; |
439 | int i; |
396 | |
440 | |
397 | for (i = 0; i < fdchangecnt; ++i) |
441 | for (i = 0; i < fdchangecnt; ++i) |
398 | { |
442 | { |
399 | int fd = fdchanges [i]; |
443 | int fd = fdchanges [i]; |
400 | ANFD *anfd = anfds + fd; |
444 | ANFD *anfd = anfds + fd; |
401 | struct ev_io *w; |
445 | struct ev_io *w; |
402 | |
446 | |
403 | int wev = 0; |
447 | int events = 0; |
404 | |
448 | |
405 | for (w = anfd->head; w; w = w->next) |
449 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
406 | wev |= w->events; |
450 | events |= w->events; |
407 | |
451 | |
408 | if (anfd->wev != wev) |
452 | #if EV_SELECT_IS_WINSOCKET |
|
|
453 | if (events) |
409 | { |
454 | { |
410 | method_modify (fd, anfd->wev, wev); |
455 | unsigned long argp; |
411 | anfd->wev = wev; |
456 | anfd->handle = _get_osfhandle (fd); |
|
|
457 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
412 | } |
458 | } |
|
|
459 | #endif |
|
|
460 | |
|
|
461 | anfd->reify = 0; |
|
|
462 | |
|
|
463 | method_modify (EV_A_ fd, anfd->events, events); |
|
|
464 | anfd->events = events; |
413 | } |
465 | } |
414 | |
466 | |
415 | fdchangecnt = 0; |
467 | fdchangecnt = 0; |
416 | } |
468 | } |
417 | |
469 | |
418 | static void |
470 | static void |
419 | call_pending () |
471 | fd_change (EV_P_ int fd) |
|
|
472 | { |
|
|
473 | if (expect_false (anfds [fd].reify)) |
|
|
474 | return; |
|
|
475 | |
|
|
476 | anfds [fd].reify = 1; |
|
|
477 | |
|
|
478 | ++fdchangecnt; |
|
|
479 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
|
|
480 | fdchanges [fdchangecnt - 1] = fd; |
|
|
481 | } |
|
|
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 | |
|
|
505 | /* called on EBADF to verify fds */ |
|
|
506 | static void |
|
|
507 | fd_ebadf (EV_P) |
|
|
508 | { |
|
|
509 | int fd; |
|
|
510 | |
|
|
511 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
512 | if (anfds [fd].events) |
|
|
513 | if (!fd_valid (fd) == -1 && errno == EBADF) |
|
|
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) |
|
|
525 | { |
|
|
526 | fd_kill (EV_A_ fd); |
|
|
527 | return; |
|
|
528 | } |
|
|
529 | } |
|
|
530 | |
|
|
531 | /* usually called after fork if method 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 | } |
|
|
544 | } |
|
|
545 | |
|
|
546 | /*****************************************************************************/ |
|
|
547 | |
|
|
548 | static void |
|
|
549 | upheap (WT *heap, int k) |
|
|
550 | { |
|
|
551 | WT w = heap [k]; |
|
|
552 | |
|
|
553 | while (k && heap [k >> 1]->at > w->at) |
|
|
554 | { |
|
|
555 | heap [k] = heap [k >> 1]; |
|
|
556 | ((W)heap [k])->active = k + 1; |
|
|
557 | k >>= 1; |
|
|
558 | } |
|
|
559 | |
|
|
560 | heap [k] = w; |
|
|
561 | ((W)heap [k])->active = k + 1; |
|
|
562 | |
|
|
563 | } |
|
|
564 | |
|
|
565 | static void |
|
|
566 | downheap (WT *heap, int N, int k) |
|
|
567 | { |
|
|
568 | WT w = heap [k]; |
|
|
569 | |
|
|
570 | while (k < (N >> 1)) |
|
|
571 | { |
|
|
572 | int j = k << 1; |
|
|
573 | |
|
|
574 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
|
|
575 | ++j; |
|
|
576 | |
|
|
577 | if (w->at <= heap [j]->at) |
|
|
578 | break; |
|
|
579 | |
|
|
580 | heap [k] = heap [j]; |
|
|
581 | ((W)heap [k])->active = k + 1; |
|
|
582 | k = j; |
|
|
583 | } |
|
|
584 | |
|
|
585 | heap [k] = w; |
|
|
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); |
|
|
594 | } |
|
|
595 | |
|
|
596 | /*****************************************************************************/ |
|
|
597 | |
|
|
598 | typedef struct |
|
|
599 | { |
|
|
600 | WL head; |
|
|
601 | sig_atomic_t volatile gotsig; |
|
|
602 | } ANSIG; |
|
|
603 | |
|
|
604 | static ANSIG *signals; |
|
|
605 | static int signalmax; |
|
|
606 | |
|
|
607 | static int sigpipe [2]; |
|
|
608 | static sig_atomic_t volatile gotsig; |
|
|
609 | static struct ev_io sigev; |
|
|
610 | |
|
|
611 | static void |
|
|
612 | signals_init (ANSIG *base, int count) |
|
|
613 | { |
|
|
614 | while (count--) |
|
|
615 | { |
|
|
616 | base->head = 0; |
|
|
617 | base->gotsig = 0; |
|
|
618 | |
|
|
619 | ++base; |
|
|
620 | } |
|
|
621 | } |
|
|
622 | |
|
|
623 | static void |
|
|
624 | sighandler (int signum) |
|
|
625 | { |
|
|
626 | #if _WIN32 |
|
|
627 | signal (signum, sighandler); |
|
|
628 | #endif |
|
|
629 | |
|
|
630 | signals [signum - 1].gotsig = 1; |
|
|
631 | |
|
|
632 | if (!gotsig) |
|
|
633 | { |
|
|
634 | int old_errno = errno; |
|
|
635 | gotsig = 1; |
|
|
636 | write (sigpipe [1], &signum, 1); |
|
|
637 | errno = old_errno; |
|
|
638 | } |
|
|
639 | } |
|
|
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 | |
|
|
661 | static void |
|
|
662 | sigcb (EV_P_ struct ev_io *iow, int revents) |
|
|
663 | { |
|
|
664 | int signum; |
|
|
665 | |
|
|
666 | read (sigpipe [0], &revents, 1); |
|
|
667 | gotsig = 0; |
|
|
668 | |
|
|
669 | for (signum = signalmax; signum--; ) |
|
|
670 | if (signals [signum].gotsig) |
|
|
671 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
672 | } |
|
|
673 | |
|
|
674 | static void |
|
|
675 | fd_intern (int fd) |
|
|
676 | { |
|
|
677 | #ifdef _WIN32 |
|
|
678 | int arg = 1; |
|
|
679 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
680 | #else |
|
|
681 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
682 | fcntl (fd, 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]); |
|
|
691 | |
|
|
692 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
693 | ev_io_start (EV_A_ &sigev); |
|
|
694 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
695 | } |
|
|
696 | |
|
|
697 | /*****************************************************************************/ |
|
|
698 | |
|
|
699 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
700 | |
|
|
701 | #ifndef _WIN32 |
|
|
702 | |
|
|
703 | static struct ev_signal childev; |
|
|
704 | |
|
|
705 | #ifndef WCONTINUED |
|
|
706 | # define WCONTINUED 0 |
|
|
707 | #endif |
|
|
708 | |
|
|
709 | static void |
|
|
710 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
|
|
711 | { |
|
|
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 | { |
|
|
727 | int pid, status; |
|
|
728 | |
|
|
729 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
|
|
730 | { |
|
|
731 | /* make sure we are called again until all childs have been reaped */ |
|
|
732 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
733 | |
|
|
734 | child_reap (EV_A_ sw, pid, pid, status); |
|
|
735 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
|
|
736 | } |
|
|
737 | } |
|
|
738 | |
|
|
739 | #endif |
|
|
740 | |
|
|
741 | /*****************************************************************************/ |
|
|
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 |
|
|
749 | #if EV_USE_EPOLL |
|
|
750 | # include "ev_epoll.c" |
|
|
751 | #endif |
|
|
752 | #if EV_USE_POLL |
|
|
753 | # include "ev_poll.c" |
|
|
754 | #endif |
|
|
755 | #if EV_USE_SELECT |
|
|
756 | # include "ev_select.c" |
|
|
757 | #endif |
|
|
758 | |
|
|
759 | int |
|
|
760 | ev_version_major (void) |
|
|
761 | { |
|
|
762 | return EV_VERSION_MAJOR; |
|
|
763 | } |
|
|
764 | |
|
|
765 | int |
|
|
766 | ev_version_minor (void) |
|
|
767 | { |
|
|
768 | return EV_VERSION_MINOR; |
|
|
769 | } |
|
|
770 | |
|
|
771 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
772 | static int |
|
|
773 | enable_secure (void) |
|
|
774 | { |
|
|
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 | } |
|
|
787 | |
|
|
788 | unsigned int |
|
|
789 | ev_recommended_backends (void) |
|
|
790 | { |
|
|
791 | unsigned int flags; |
|
|
792 | |
|
|
793 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
794 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
795 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
796 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
797 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
798 | |
|
|
799 | return flags; |
|
|
800 | } |
|
|
801 | |
|
|
802 | unsigned int |
|
|
803 | ev_backend (EV_P) |
|
|
804 | { |
|
|
805 | unsigned int flags = ev_recommended_backends (); |
|
|
806 | |
|
|
807 | #ifndef __NetBSD__ |
|
|
808 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
809 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
810 | flags &= ~EVBACKEND_KQUEUE; |
|
|
811 | #endif |
|
|
812 | #ifdef __APPLE__ |
|
|
813 | // flags &= ~EVBACKEND_KQUEUE; for documentation |
|
|
814 | flags &= ~EVBACKEND_POLL; |
|
|
815 | #endif |
|
|
816 | |
|
|
817 | return flags; |
|
|
818 | } |
|
|
819 | |
|
|
820 | static void |
|
|
821 | loop_init (EV_P_ unsigned int flags) |
|
|
822 | { |
|
|
823 | if (!method) |
|
|
824 | { |
|
|
825 | #if EV_USE_MONOTONIC |
|
|
826 | { |
|
|
827 | struct timespec ts; |
|
|
828 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
829 | have_monotonic = 1; |
|
|
830 | } |
|
|
831 | #endif |
|
|
832 | |
|
|
833 | ev_rt_now = ev_time (); |
|
|
834 | mn_now = get_clock (); |
|
|
835 | now_floor = mn_now; |
|
|
836 | rtmn_diff = ev_rt_now - mn_now; |
|
|
837 | |
|
|
838 | if (!(flags & EVFLAG_NOENV) |
|
|
839 | && !enable_secure () |
|
|
840 | && getenv ("LIBEV_FLAGS")) |
|
|
841 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
842 | |
|
|
843 | if (!(flags & 0x0000ffffUL)) |
|
|
844 | flags |= ev_recommended_backends (); |
|
|
845 | |
|
|
846 | method = 0; |
|
|
847 | #if EV_USE_PORT |
|
|
848 | if (!method && (flags & EVBACKEND_PORT )) method = port_init (EV_A_ flags); |
|
|
849 | #endif |
|
|
850 | #if EV_USE_KQUEUE |
|
|
851 | if (!method && (flags & EVBACKEND_KQUEUE)) method = kqueue_init (EV_A_ flags); |
|
|
852 | #endif |
|
|
853 | #if EV_USE_EPOLL |
|
|
854 | if (!method && (flags & EVBACKEND_EPOLL )) method = epoll_init (EV_A_ flags); |
|
|
855 | #endif |
|
|
856 | #if EV_USE_POLL |
|
|
857 | if (!method && (flags & EVBACKEND_POLL )) method = poll_init (EV_A_ flags); |
|
|
858 | #endif |
|
|
859 | #if EV_USE_SELECT |
|
|
860 | if (!method && (flags & EVBACKEND_SELECT)) method = select_init (EV_A_ flags); |
|
|
861 | #endif |
|
|
862 | |
|
|
863 | ev_init (&sigev, sigcb); |
|
|
864 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
865 | } |
|
|
866 | } |
|
|
867 | |
|
|
868 | static void |
|
|
869 | loop_destroy (EV_P) |
420 | { |
870 | { |
421 | int i; |
871 | int i; |
422 | |
872 | |
423 | for (i = 0; i < pendingcnt; ++i) |
873 | #if EV_USE_PORT |
|
|
874 | if (method == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
875 | #endif |
|
|
876 | #if EV_USE_KQUEUE |
|
|
877 | if (method == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
878 | #endif |
|
|
879 | #if EV_USE_EPOLL |
|
|
880 | if (method == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
881 | #endif |
|
|
882 | #if EV_USE_POLL |
|
|
883 | if (method == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
884 | #endif |
|
|
885 | #if EV_USE_SELECT |
|
|
886 | if (method == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
887 | #endif |
|
|
888 | |
|
|
889 | for (i = NUMPRI; i--; ) |
|
|
890 | array_free (pending, [i]); |
|
|
891 | |
|
|
892 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
893 | array_free (fdchange, EMPTY0); |
|
|
894 | array_free (timer, EMPTY0); |
|
|
895 | #if EV_PERIODICS |
|
|
896 | array_free (periodic, EMPTY0); |
|
|
897 | #endif |
|
|
898 | array_free (idle, EMPTY0); |
|
|
899 | array_free (prepare, EMPTY0); |
|
|
900 | array_free (check, EMPTY0); |
|
|
901 | |
|
|
902 | method = 0; |
|
|
903 | } |
|
|
904 | |
|
|
905 | static void |
|
|
906 | loop_fork (EV_P) |
|
|
907 | { |
|
|
908 | #if EV_USE_PORT |
|
|
909 | if (method == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
910 | #endif |
|
|
911 | #if EV_USE_KQUEUE |
|
|
912 | if (method == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
913 | #endif |
|
|
914 | #if EV_USE_EPOLL |
|
|
915 | if (method == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
916 | #endif |
|
|
917 | |
|
|
918 | if (ev_is_active (&sigev)) |
|
|
919 | { |
|
|
920 | /* default loop */ |
|
|
921 | |
|
|
922 | ev_ref (EV_A); |
|
|
923 | ev_io_stop (EV_A_ &sigev); |
|
|
924 | close (sigpipe [0]); |
|
|
925 | close (sigpipe [1]); |
|
|
926 | |
|
|
927 | while (pipe (sigpipe)) |
|
|
928 | syserr ("(libev) error creating pipe"); |
|
|
929 | |
|
|
930 | siginit (EV_A); |
424 | { |
931 | } |
425 | ANPENDING *p = pendings + i; |
|
|
426 | |
932 | |
427 | if (p->w) |
933 | postfork = 0; |
|
|
934 | } |
|
|
935 | |
|
|
936 | #if EV_MULTIPLICITY |
|
|
937 | struct ev_loop * |
|
|
938 | ev_loop_new (unsigned int flags) |
|
|
939 | { |
|
|
940 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
941 | |
|
|
942 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
943 | |
|
|
944 | loop_init (EV_A_ flags); |
|
|
945 | |
|
|
946 | if (ev_method (EV_A)) |
|
|
947 | return loop; |
|
|
948 | |
|
|
949 | return 0; |
|
|
950 | } |
|
|
951 | |
|
|
952 | void |
|
|
953 | ev_loop_destroy (EV_P) |
|
|
954 | { |
|
|
955 | loop_destroy (EV_A); |
|
|
956 | ev_free (loop); |
|
|
957 | } |
|
|
958 | |
|
|
959 | void |
|
|
960 | ev_loop_fork (EV_P) |
|
|
961 | { |
|
|
962 | postfork = 1; |
|
|
963 | } |
|
|
964 | |
|
|
965 | #endif |
|
|
966 | |
|
|
967 | #if EV_MULTIPLICITY |
|
|
968 | struct ev_loop * |
|
|
969 | ev_default_loop_init (unsigned int flags) |
|
|
970 | #else |
|
|
971 | int |
|
|
972 | ev_default_loop (unsigned int flags) |
|
|
973 | #endif |
|
|
974 | { |
|
|
975 | if (sigpipe [0] == sigpipe [1]) |
|
|
976 | if (pipe (sigpipe)) |
|
|
977 | return 0; |
|
|
978 | |
|
|
979 | if (!ev_default_loop_ptr) |
|
|
980 | { |
|
|
981 | #if EV_MULTIPLICITY |
|
|
982 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
|
|
983 | #else |
|
|
984 | ev_default_loop_ptr = 1; |
|
|
985 | #endif |
|
|
986 | |
|
|
987 | loop_init (EV_A_ flags); |
|
|
988 | |
|
|
989 | if (ev_method (EV_A)) |
428 | { |
990 | { |
429 | p->w->pending = 0; |
991 | siginit (EV_A); |
430 | p->w->cb (p->w, p->events); |
992 | |
|
|
993 | #ifndef _WIN32 |
|
|
994 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
995 | ev_set_priority (&childev, EV_MAXPRI); |
|
|
996 | ev_signal_start (EV_A_ &childev); |
|
|
997 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
998 | #endif |
431 | } |
999 | } |
|
|
1000 | else |
|
|
1001 | ev_default_loop_ptr = 0; |
|
|
1002 | } |
|
|
1003 | |
|
|
1004 | return ev_default_loop_ptr; |
|
|
1005 | } |
|
|
1006 | |
|
|
1007 | void |
|
|
1008 | ev_default_destroy (void) |
|
|
1009 | { |
|
|
1010 | #if EV_MULTIPLICITY |
|
|
1011 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1012 | #endif |
|
|
1013 | |
|
|
1014 | #ifndef _WIN32 |
|
|
1015 | ev_ref (EV_A); /* child watcher */ |
|
|
1016 | ev_signal_stop (EV_A_ &childev); |
|
|
1017 | #endif |
|
|
1018 | |
|
|
1019 | ev_ref (EV_A); /* signal watcher */ |
|
|
1020 | ev_io_stop (EV_A_ &sigev); |
|
|
1021 | |
|
|
1022 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
1023 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
1024 | |
|
|
1025 | loop_destroy (EV_A); |
|
|
1026 | } |
|
|
1027 | |
|
|
1028 | void |
|
|
1029 | ev_default_fork (void) |
|
|
1030 | { |
|
|
1031 | #if EV_MULTIPLICITY |
|
|
1032 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1033 | #endif |
|
|
1034 | |
|
|
1035 | if (method) |
|
|
1036 | postfork = 1; |
|
|
1037 | } |
|
|
1038 | |
|
|
1039 | /*****************************************************************************/ |
|
|
1040 | |
|
|
1041 | static int |
|
|
1042 | any_pending (EV_P) |
|
|
1043 | { |
|
|
1044 | int pri; |
|
|
1045 | |
|
|
1046 | for (pri = NUMPRI; pri--; ) |
|
|
1047 | if (pendingcnt [pri]) |
|
|
1048 | return 1; |
|
|
1049 | |
|
|
1050 | return 0; |
|
|
1051 | } |
|
|
1052 | |
|
|
1053 | inline void |
|
|
1054 | call_pending (EV_P) |
|
|
1055 | { |
|
|
1056 | int pri; |
|
|
1057 | |
|
|
1058 | for (pri = NUMPRI; pri--; ) |
|
|
1059 | while (pendingcnt [pri]) |
|
|
1060 | { |
|
|
1061 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
|
|
1062 | |
|
|
1063 | if (expect_true (p->w)) |
|
|
1064 | { |
|
|
1065 | p->w->pending = 0; |
|
|
1066 | EV_CB_INVOKE (p->w, p->events); |
|
|
1067 | } |
432 | } |
1068 | } |
433 | |
|
|
434 | pendingcnt = 0; |
|
|
435 | } |
1069 | } |
436 | |
1070 | |
437 | static void |
1071 | inline void |
438 | timers_reify () |
1072 | timers_reify (EV_P) |
439 | { |
1073 | { |
440 | while (timercnt && timers [0]->at <= now) |
1074 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
441 | { |
1075 | { |
442 | struct ev_timer *w = timers [0]; |
1076 | struct ev_timer *w = timers [0]; |
443 | |
1077 | |
444 | event ((W)w, EV_TIMEOUT); |
1078 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
445 | |
1079 | |
446 | /* first reschedule or stop timer */ |
1080 | /* first reschedule or stop timer */ |
447 | if (w->repeat) |
1081 | if (w->repeat) |
448 | { |
1082 | { |
|
|
1083 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
1084 | |
449 | w->at = now + w->repeat; |
1085 | ((WT)w)->at += w->repeat; |
450 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
1086 | if (((WT)w)->at < mn_now) |
|
|
1087 | ((WT)w)->at = mn_now; |
|
|
1088 | |
451 | downheap ((WT *)timers, timercnt, 0); |
1089 | downheap ((WT *)timers, timercnt, 0); |
452 | } |
1090 | } |
453 | else |
1091 | else |
454 | evtimer_stop (w); /* nonrepeating: stop timer */ |
1092 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
455 | } |
|
|
456 | } |
|
|
457 | |
1093 | |
458 | static void |
1094 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
1095 | } |
|
|
1096 | } |
|
|
1097 | |
|
|
1098 | #if EV_PERIODICS |
|
|
1099 | inline void |
459 | periodics_reify () |
1100 | periodics_reify (EV_P) |
460 | { |
1101 | { |
461 | while (periodiccnt && periodics [0]->at <= ev_now) |
1102 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
462 | { |
1103 | { |
463 | struct ev_periodic *w = periodics [0]; |
1104 | struct ev_periodic *w = periodics [0]; |
464 | |
1105 | |
|
|
1106 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
|
|
1107 | |
465 | /* first reschedule or stop timer */ |
1108 | /* first reschedule or stop timer */ |
466 | if (w->interval) |
1109 | if (w->reschedule_cb) |
467 | { |
1110 | { |
|
|
1111 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); |
|
|
1112 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
|
|
1113 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1114 | } |
|
|
1115 | else if (w->interval) |
|
|
1116 | { |
468 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
1117 | ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
469 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
1118 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
470 | downheap ((WT *)periodics, periodiccnt, 0); |
1119 | downheap ((WT *)periodics, periodiccnt, 0); |
471 | } |
1120 | } |
472 | else |
1121 | else |
473 | evperiodic_stop (w); /* nonrepeating: stop timer */ |
1122 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
474 | |
1123 | |
475 | event ((W)w, EV_TIMEOUT); |
1124 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
476 | } |
1125 | } |
477 | } |
1126 | } |
478 | |
1127 | |
479 | static void |
1128 | static void |
480 | periodics_reschedule (ev_tstamp diff) |
1129 | periodics_reschedule (EV_P) |
481 | { |
1130 | { |
482 | int i; |
1131 | int i; |
483 | |
1132 | |
484 | /* adjust periodics after time jump */ |
1133 | /* adjust periodics after time jump */ |
485 | for (i = 0; i < periodiccnt; ++i) |
1134 | for (i = 0; i < periodiccnt; ++i) |
486 | { |
1135 | { |
487 | struct ev_periodic *w = periodics [i]; |
1136 | struct ev_periodic *w = periodics [i]; |
488 | |
1137 | |
|
|
1138 | if (w->reschedule_cb) |
|
|
1139 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
489 | if (w->interval) |
1140 | else if (w->interval) |
|
|
1141 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1142 | } |
|
|
1143 | |
|
|
1144 | /* now rebuild the heap */ |
|
|
1145 | for (i = periodiccnt >> 1; i--; ) |
|
|
1146 | downheap ((WT *)periodics, periodiccnt, i); |
|
|
1147 | } |
|
|
1148 | #endif |
|
|
1149 | |
|
|
1150 | inline int |
|
|
1151 | time_update_monotonic (EV_P) |
|
|
1152 | { |
|
|
1153 | mn_now = get_clock (); |
|
|
1154 | |
|
|
1155 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
1156 | { |
|
|
1157 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1158 | return 0; |
|
|
1159 | } |
|
|
1160 | else |
|
|
1161 | { |
|
|
1162 | now_floor = mn_now; |
|
|
1163 | ev_rt_now = ev_time (); |
|
|
1164 | return 1; |
|
|
1165 | } |
|
|
1166 | } |
|
|
1167 | |
|
|
1168 | inline void |
|
|
1169 | time_update (EV_P) |
|
|
1170 | { |
|
|
1171 | int i; |
|
|
1172 | |
|
|
1173 | #if EV_USE_MONOTONIC |
|
|
1174 | if (expect_true (have_monotonic)) |
|
|
1175 | { |
|
|
1176 | if (time_update_monotonic (EV_A)) |
490 | { |
1177 | { |
491 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
1178 | ev_tstamp odiff = rtmn_diff; |
492 | |
1179 | |
493 | if (fabs (diff) >= 1e-4) |
1180 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
494 | { |
1181 | { |
495 | evperiodic_stop (w); |
1182 | rtmn_diff = ev_rt_now - mn_now; |
496 | evperiodic_start (w); |
|
|
497 | |
1183 | |
498 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
1184 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
|
|
1185 | return; /* all is well */ |
|
|
1186 | |
|
|
1187 | ev_rt_now = ev_time (); |
|
|
1188 | mn_now = get_clock (); |
|
|
1189 | now_floor = mn_now; |
499 | } |
1190 | } |
|
|
1191 | |
|
|
1192 | # if EV_PERIODICS |
|
|
1193 | periodics_reschedule (EV_A); |
|
|
1194 | # endif |
|
|
1195 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1196 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
500 | } |
1197 | } |
501 | } |
1198 | } |
502 | } |
1199 | else |
503 | |
1200 | #endif |
504 | static void |
1201 | { |
505 | time_update () |
|
|
506 | { |
|
|
507 | int i; |
|
|
508 | |
|
|
509 | ev_now = ev_time (); |
1202 | ev_rt_now = ev_time (); |
510 | |
1203 | |
511 | if (have_monotonic) |
1204 | if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
512 | { |
|
|
513 | ev_tstamp odiff = diff; |
|
|
514 | |
|
|
515 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
516 | { |
1205 | { |
517 | now = get_clock (); |
1206 | #if EV_PERIODICS |
518 | diff = ev_now - now; |
|
|
519 | |
|
|
520 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
|
|
521 | return; /* all is well */ |
|
|
522 | |
|
|
523 | ev_now = ev_time (); |
|
|
524 | } |
|
|
525 | |
|
|
526 | periodics_reschedule (diff - odiff); |
|
|
527 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
528 | } |
|
|
529 | else |
|
|
530 | { |
|
|
531 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
|
|
532 | { |
|
|
533 | periodics_reschedule (ev_now - now); |
1207 | periodics_reschedule (EV_A); |
|
|
1208 | #endif |
534 | |
1209 | |
535 | /* adjust timers. this is easy, as the offset is the same for all */ |
1210 | /* adjust timers. this is easy, as the offset is the same for all */ |
536 | for (i = 0; i < timercnt; ++i) |
1211 | for (i = 0; i < timercnt; ++i) |
537 | timers [i]->at += diff; |
1212 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
538 | } |
1213 | } |
539 | |
1214 | |
540 | now = ev_now; |
1215 | mn_now = ev_rt_now; |
541 | } |
1216 | } |
542 | } |
1217 | } |
543 | |
1218 | |
544 | int ev_loop_done; |
1219 | void |
|
|
1220 | ev_ref (EV_P) |
|
|
1221 | { |
|
|
1222 | ++activecnt; |
|
|
1223 | } |
545 | |
1224 | |
|
|
1225 | void |
|
|
1226 | ev_unref (EV_P) |
|
|
1227 | { |
|
|
1228 | --activecnt; |
|
|
1229 | } |
|
|
1230 | |
|
|
1231 | static int loop_done; |
|
|
1232 | |
|
|
1233 | void |
546 | void ev_loop (int flags) |
1234 | ev_loop (EV_P_ int flags) |
547 | { |
1235 | { |
548 | double block; |
1236 | double block; |
549 | ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0; |
1237 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
550 | |
1238 | |
551 | if (checkcnt) |
1239 | while (activecnt) |
552 | { |
1240 | { |
553 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1241 | /* queue check watchers (and execute them) */ |
|
|
1242 | if (expect_false (preparecnt)) |
|
|
1243 | { |
|
|
1244 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
554 | call_pending (); |
1245 | call_pending (EV_A); |
555 | } |
1246 | } |
556 | |
1247 | |
557 | do |
1248 | /* we might have forked, so reify kernel state if necessary */ |
558 | { |
1249 | if (expect_false (postfork)) |
|
|
1250 | loop_fork (EV_A); |
|
|
1251 | |
559 | /* update fd-related kernel structures */ |
1252 | /* update fd-related kernel structures */ |
560 | fd_reify (); |
1253 | fd_reify (EV_A); |
561 | |
1254 | |
562 | /* calculate blocking time */ |
1255 | /* calculate blocking time */ |
563 | |
1256 | |
564 | /* we only need this for !monotonic clock, but as we always have timers, we just calculate it every time */ |
1257 | /* we only need this for !monotonic clock or timers, but as we basically |
|
|
1258 | always have timers, we just calculate it always */ |
|
|
1259 | #if EV_USE_MONOTONIC |
|
|
1260 | if (expect_true (have_monotonic)) |
|
|
1261 | time_update_monotonic (EV_A); |
|
|
1262 | else |
|
|
1263 | #endif |
|
|
1264 | { |
565 | ev_now = ev_time (); |
1265 | ev_rt_now = ev_time (); |
|
|
1266 | mn_now = ev_rt_now; |
|
|
1267 | } |
566 | |
1268 | |
567 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
1269 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
568 | block = 0.; |
1270 | block = 0.; |
569 | else |
1271 | else |
570 | { |
1272 | { |
571 | block = MAX_BLOCKTIME; |
1273 | block = MAX_BLOCKTIME; |
572 | |
1274 | |
573 | if (timercnt) |
1275 | if (timercnt) |
574 | { |
1276 | { |
575 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
1277 | ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; |
576 | if (block > to) block = to; |
1278 | if (block > to) block = to; |
577 | } |
1279 | } |
578 | |
1280 | |
|
|
1281 | #if EV_PERIODICS |
579 | if (periodiccnt) |
1282 | if (periodiccnt) |
580 | { |
1283 | { |
581 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
1284 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; |
582 | if (block > to) block = to; |
1285 | if (block > to) block = to; |
583 | } |
1286 | } |
|
|
1287 | #endif |
584 | |
1288 | |
585 | if (block < 0.) block = 0.; |
1289 | if (expect_false (block < 0.)) block = 0.; |
586 | } |
1290 | } |
587 | |
1291 | |
588 | method_poll (block); |
1292 | method_poll (EV_A_ block); |
589 | |
1293 | |
590 | /* update ev_now, do magic */ |
1294 | /* update ev_rt_now, do magic */ |
591 | time_update (); |
1295 | time_update (EV_A); |
592 | |
1296 | |
593 | /* queue pending timers and reschedule them */ |
1297 | /* queue pending timers and reschedule them */ |
|
|
1298 | timers_reify (EV_A); /* relative timers called last */ |
|
|
1299 | #if EV_PERIODICS |
594 | periodics_reify (); /* absolute timers first */ |
1300 | periodics_reify (EV_A); /* absolute timers called first */ |
595 | timers_reify (); /* relative timers second */ |
1301 | #endif |
596 | |
1302 | |
597 | /* queue idle watchers unless io or timers are pending */ |
1303 | /* queue idle watchers unless io or timers are pending */ |
598 | if (!pendingcnt) |
1304 | if (idlecnt && !any_pending (EV_A)) |
599 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
1305 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
600 | |
1306 | |
601 | /* queue check and possibly idle watchers */ |
1307 | /* queue check watchers, to be executed first */ |
|
|
1308 | if (expect_false (checkcnt)) |
602 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1309 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
603 | |
1310 | |
604 | call_pending (); |
1311 | call_pending (EV_A); |
605 | } |
|
|
606 | while (!ev_loop_done); |
|
|
607 | |
1312 | |
|
|
1313 | if (expect_false (loop_done)) |
|
|
1314 | break; |
|
|
1315 | } |
|
|
1316 | |
608 | if (ev_loop_done != 2) |
1317 | if (loop_done != 2) |
609 | ev_loop_done = 0; |
1318 | loop_done = 0; |
|
|
1319 | } |
|
|
1320 | |
|
|
1321 | void |
|
|
1322 | ev_unloop (EV_P_ int how) |
|
|
1323 | { |
|
|
1324 | loop_done = how; |
610 | } |
1325 | } |
611 | |
1326 | |
612 | /*****************************************************************************/ |
1327 | /*****************************************************************************/ |
613 | |
1328 | |
614 | static void |
1329 | inline void |
615 | wlist_add (WL *head, WL elem) |
1330 | wlist_add (WL *head, WL elem) |
616 | { |
1331 | { |
617 | elem->next = *head; |
1332 | elem->next = *head; |
618 | *head = elem; |
1333 | *head = elem; |
619 | } |
1334 | } |
620 | |
1335 | |
621 | static void |
1336 | inline void |
622 | wlist_del (WL *head, WL elem) |
1337 | wlist_del (WL *head, WL elem) |
623 | { |
1338 | { |
624 | while (*head) |
1339 | while (*head) |
625 | { |
1340 | { |
626 | if (*head == elem) |
1341 | if (*head == elem) |
… | |
… | |
631 | |
1346 | |
632 | head = &(*head)->next; |
1347 | head = &(*head)->next; |
633 | } |
1348 | } |
634 | } |
1349 | } |
635 | |
1350 | |
636 | static void |
1351 | inline void |
637 | ev_clear (W w) |
1352 | ev_clear_pending (EV_P_ W w) |
638 | { |
1353 | { |
639 | if (w->pending) |
1354 | if (w->pending) |
640 | { |
1355 | { |
641 | pendings [w->pending - 1].w = 0; |
1356 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
642 | w->pending = 0; |
1357 | w->pending = 0; |
643 | } |
1358 | } |
644 | } |
1359 | } |
645 | |
1360 | |
646 | static void |
1361 | inline void |
647 | ev_start (W w, int active) |
1362 | ev_start (EV_P_ W w, int active) |
648 | { |
1363 | { |
|
|
1364 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1365 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1366 | |
649 | w->active = active; |
1367 | w->active = active; |
|
|
1368 | ev_ref (EV_A); |
650 | } |
1369 | } |
651 | |
1370 | |
652 | static void |
1371 | inline void |
653 | ev_stop (W w) |
1372 | ev_stop (EV_P_ W w) |
654 | { |
1373 | { |
|
|
1374 | ev_unref (EV_A); |
655 | w->active = 0; |
1375 | w->active = 0; |
656 | } |
1376 | } |
657 | |
1377 | |
658 | /*****************************************************************************/ |
1378 | /*****************************************************************************/ |
659 | |
1379 | |
660 | void |
1380 | void |
661 | evio_start (struct ev_io *w) |
1381 | ev_io_start (EV_P_ struct ev_io *w) |
662 | { |
1382 | { |
|
|
1383 | int fd = w->fd; |
|
|
1384 | |
663 | if (ev_is_active (w)) |
1385 | if (expect_false (ev_is_active (w))) |
664 | return; |
1386 | return; |
665 | |
1387 | |
666 | int fd = w->fd; |
1388 | assert (("ev_io_start called with negative fd", fd >= 0)); |
667 | |
1389 | |
668 | ev_start ((W)w, 1); |
1390 | ev_start (EV_A_ (W)w, 1); |
669 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1391 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
670 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1392 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
671 | |
1393 | |
672 | ++fdchangecnt; |
1394 | fd_change (EV_A_ fd); |
673 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
674 | fdchanges [fdchangecnt - 1] = fd; |
|
|
675 | } |
1395 | } |
676 | |
1396 | |
677 | void |
1397 | void |
678 | evio_stop (struct ev_io *w) |
1398 | ev_io_stop (EV_P_ struct ev_io *w) |
679 | { |
1399 | { |
680 | ev_clear ((W)w); |
1400 | ev_clear_pending (EV_A_ (W)w); |
681 | if (!ev_is_active (w)) |
1401 | if (expect_false (!ev_is_active (w))) |
682 | return; |
1402 | return; |
683 | |
1403 | |
|
|
1404 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
1405 | |
684 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1406 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
685 | ev_stop ((W)w); |
1407 | ev_stop (EV_A_ (W)w); |
686 | |
1408 | |
687 | ++fdchangecnt; |
1409 | fd_change (EV_A_ w->fd); |
688 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
689 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
690 | } |
1410 | } |
691 | |
1411 | |
692 | void |
1412 | void |
693 | evtimer_start (struct ev_timer *w) |
1413 | ev_timer_start (EV_P_ struct ev_timer *w) |
694 | { |
1414 | { |
695 | if (ev_is_active (w)) |
1415 | if (expect_false (ev_is_active (w))) |
696 | return; |
1416 | return; |
697 | |
1417 | |
698 | w->at += now; |
1418 | ((WT)w)->at += mn_now; |
699 | |
1419 | |
700 | assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); |
1420 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
701 | |
1421 | |
702 | ev_start ((W)w, ++timercnt); |
1422 | ev_start (EV_A_ (W)w, ++timercnt); |
703 | array_needsize (timers, timermax, timercnt, ); |
1423 | array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2); |
704 | timers [timercnt - 1] = w; |
1424 | timers [timercnt - 1] = w; |
705 | upheap ((WT *)timers, timercnt - 1); |
1425 | upheap ((WT *)timers, timercnt - 1); |
706 | } |
|
|
707 | |
1426 | |
|
|
1427 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1428 | } |
|
|
1429 | |
708 | void |
1430 | void |
709 | evtimer_stop (struct ev_timer *w) |
1431 | ev_timer_stop (EV_P_ struct ev_timer *w) |
710 | { |
1432 | { |
711 | ev_clear ((W)w); |
1433 | ev_clear_pending (EV_A_ (W)w); |
712 | if (!ev_is_active (w)) |
1434 | if (expect_false (!ev_is_active (w))) |
713 | return; |
1435 | return; |
714 | |
1436 | |
|
|
1437 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1438 | |
715 | if (w->active < timercnt--) |
1439 | if (expect_true (((W)w)->active < timercnt--)) |
716 | { |
1440 | { |
717 | timers [w->active - 1] = timers [timercnt]; |
1441 | timers [((W)w)->active - 1] = timers [timercnt]; |
718 | downheap ((WT *)timers, timercnt, w->active - 1); |
1442 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
719 | } |
1443 | } |
720 | |
1444 | |
721 | w->at = w->repeat; |
1445 | ((WT)w)->at -= mn_now; |
722 | |
1446 | |
723 | ev_stop ((W)w); |
1447 | ev_stop (EV_A_ (W)w); |
724 | } |
1448 | } |
725 | |
1449 | |
726 | void |
1450 | void |
727 | evtimer_again (struct ev_timer *w) |
1451 | ev_timer_again (EV_P_ struct ev_timer *w) |
728 | { |
1452 | { |
729 | if (ev_is_active (w)) |
1453 | if (ev_is_active (w)) |
730 | { |
1454 | { |
731 | if (w->repeat) |
1455 | if (w->repeat) |
732 | { |
1456 | { |
733 | w->at = now + w->repeat; |
1457 | ((WT)w)->at = mn_now + w->repeat; |
734 | downheap ((WT *)timers, timercnt, w->active - 1); |
1458 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
735 | } |
1459 | } |
736 | else |
1460 | else |
737 | evtimer_stop (w); |
1461 | ev_timer_stop (EV_A_ w); |
738 | } |
1462 | } |
739 | else if (w->repeat) |
1463 | else if (w->repeat) |
|
|
1464 | { |
|
|
1465 | w->at = w->repeat; |
740 | evtimer_start (w); |
1466 | ev_timer_start (EV_A_ w); |
|
|
1467 | } |
741 | } |
1468 | } |
742 | |
1469 | |
|
|
1470 | #if EV_PERIODICS |
743 | void |
1471 | void |
744 | evperiodic_start (struct ev_periodic *w) |
1472 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
745 | { |
1473 | { |
746 | if (ev_is_active (w)) |
1474 | if (expect_false (ev_is_active (w))) |
747 | return; |
1475 | return; |
748 | |
1476 | |
749 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
1477 | if (w->reschedule_cb) |
750 | |
1478 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1479 | else if (w->interval) |
|
|
1480 | { |
|
|
1481 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
751 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1482 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
752 | if (w->interval) |
|
|
753 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
1483 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1484 | } |
754 | |
1485 | |
755 | ev_start ((W)w, ++periodiccnt); |
1486 | ev_start (EV_A_ (W)w, ++periodiccnt); |
756 | array_needsize (periodics, periodicmax, periodiccnt, ); |
1487 | array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); |
757 | periodics [periodiccnt - 1] = w; |
1488 | periodics [periodiccnt - 1] = w; |
758 | upheap ((WT *)periodics, periodiccnt - 1); |
1489 | upheap ((WT *)periodics, periodiccnt - 1); |
759 | } |
|
|
760 | |
1490 | |
|
|
1491 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1492 | } |
|
|
1493 | |
761 | void |
1494 | void |
762 | evperiodic_stop (struct ev_periodic *w) |
1495 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
763 | { |
1496 | { |
764 | ev_clear ((W)w); |
1497 | ev_clear_pending (EV_A_ (W)w); |
765 | if (!ev_is_active (w)) |
1498 | if (expect_false (!ev_is_active (w))) |
766 | return; |
1499 | return; |
767 | |
1500 | |
|
|
1501 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1502 | |
768 | if (w->active < periodiccnt--) |
1503 | if (expect_true (((W)w)->active < periodiccnt--)) |
769 | { |
1504 | { |
770 | periodics [w->active - 1] = periodics [periodiccnt]; |
1505 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
771 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
1506 | adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
772 | } |
1507 | } |
773 | |
1508 | |
774 | ev_stop ((W)w); |
1509 | ev_stop (EV_A_ (W)w); |
775 | } |
1510 | } |
776 | |
1511 | |
777 | void |
1512 | void |
778 | evsignal_start (struct ev_signal *w) |
1513 | ev_periodic_again (EV_P_ struct ev_periodic *w) |
779 | { |
1514 | { |
|
|
1515 | /* TODO: use adjustheap and recalculation */ |
|
|
1516 | ev_periodic_stop (EV_A_ w); |
|
|
1517 | ev_periodic_start (EV_A_ w); |
|
|
1518 | } |
|
|
1519 | #endif |
|
|
1520 | |
|
|
1521 | void |
|
|
1522 | ev_idle_start (EV_P_ struct ev_idle *w) |
|
|
1523 | { |
780 | if (ev_is_active (w)) |
1524 | if (expect_false (ev_is_active (w))) |
781 | return; |
1525 | return; |
782 | |
1526 | |
|
|
1527 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1528 | array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2); |
|
|
1529 | idles [idlecnt - 1] = w; |
|
|
1530 | } |
|
|
1531 | |
|
|
1532 | void |
|
|
1533 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1534 | { |
|
|
1535 | ev_clear_pending (EV_A_ (W)w); |
|
|
1536 | if (expect_false (!ev_is_active (w))) |
|
|
1537 | return; |
|
|
1538 | |
|
|
1539 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
|
|
1540 | ev_stop (EV_A_ (W)w); |
|
|
1541 | } |
|
|
1542 | |
|
|
1543 | void |
|
|
1544 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1545 | { |
|
|
1546 | if (expect_false (ev_is_active (w))) |
|
|
1547 | return; |
|
|
1548 | |
|
|
1549 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1550 | array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
|
|
1551 | prepares [preparecnt - 1] = w; |
|
|
1552 | } |
|
|
1553 | |
|
|
1554 | void |
|
|
1555 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1556 | { |
|
|
1557 | ev_clear_pending (EV_A_ (W)w); |
|
|
1558 | if (expect_false (!ev_is_active (w))) |
|
|
1559 | return; |
|
|
1560 | |
|
|
1561 | prepares [((W)w)->active - 1] = prepares [--preparecnt]; |
|
|
1562 | ev_stop (EV_A_ (W)w); |
|
|
1563 | } |
|
|
1564 | |
|
|
1565 | void |
|
|
1566 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1567 | { |
|
|
1568 | if (expect_false (ev_is_active (w))) |
|
|
1569 | return; |
|
|
1570 | |
|
|
1571 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1572 | array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
1573 | checks [checkcnt - 1] = w; |
|
|
1574 | } |
|
|
1575 | |
|
|
1576 | void |
|
|
1577 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1578 | { |
|
|
1579 | ev_clear_pending (EV_A_ (W)w); |
|
|
1580 | if (expect_false (!ev_is_active (w))) |
|
|
1581 | return; |
|
|
1582 | |
|
|
1583 | checks [((W)w)->active - 1] = checks [--checkcnt]; |
|
|
1584 | ev_stop (EV_A_ (W)w); |
|
|
1585 | } |
|
|
1586 | |
|
|
1587 | #ifndef SA_RESTART |
|
|
1588 | # define SA_RESTART 0 |
|
|
1589 | #endif |
|
|
1590 | |
|
|
1591 | void |
|
|
1592 | ev_signal_start (EV_P_ struct ev_signal *w) |
|
|
1593 | { |
|
|
1594 | #if EV_MULTIPLICITY |
|
|
1595 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1596 | #endif |
|
|
1597 | if (expect_false (ev_is_active (w))) |
|
|
1598 | return; |
|
|
1599 | |
|
|
1600 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1601 | |
783 | ev_start ((W)w, 1); |
1602 | ev_start (EV_A_ (W)w, 1); |
784 | array_needsize (signals, signalmax, w->signum, signals_init); |
1603 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
785 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1604 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
786 | |
1605 | |
787 | if (!w->next) |
1606 | if (!((WL)w)->next) |
788 | { |
1607 | { |
|
|
1608 | #if _WIN32 |
|
|
1609 | signal (w->signum, sighandler); |
|
|
1610 | #else |
789 | struct sigaction sa; |
1611 | struct sigaction sa; |
790 | sa.sa_handler = sighandler; |
1612 | sa.sa_handler = sighandler; |
791 | sigfillset (&sa.sa_mask); |
1613 | sigfillset (&sa.sa_mask); |
792 | sa.sa_flags = 0; |
1614 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
793 | sigaction (w->signum, &sa, 0); |
1615 | sigaction (w->signum, &sa, 0); |
|
|
1616 | #endif |
794 | } |
1617 | } |
795 | } |
1618 | } |
796 | |
1619 | |
797 | void |
1620 | void |
798 | evsignal_stop (struct ev_signal *w) |
1621 | ev_signal_stop (EV_P_ struct ev_signal *w) |
799 | { |
1622 | { |
800 | ev_clear ((W)w); |
1623 | ev_clear_pending (EV_A_ (W)w); |
801 | if (!ev_is_active (w)) |
1624 | if (expect_false (!ev_is_active (w))) |
802 | return; |
1625 | return; |
803 | |
1626 | |
804 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1627 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
805 | ev_stop ((W)w); |
1628 | ev_stop (EV_A_ (W)w); |
806 | |
1629 | |
807 | if (!signals [w->signum - 1].head) |
1630 | if (!signals [w->signum - 1].head) |
808 | signal (w->signum, SIG_DFL); |
1631 | signal (w->signum, SIG_DFL); |
809 | } |
1632 | } |
810 | |
1633 | |
811 | void evidle_start (struct ev_idle *w) |
1634 | void |
|
|
1635 | ev_child_start (EV_P_ struct ev_child *w) |
812 | { |
1636 | { |
|
|
1637 | #if EV_MULTIPLICITY |
|
|
1638 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1639 | #endif |
813 | if (ev_is_active (w)) |
1640 | if (expect_false (ev_is_active (w))) |
814 | return; |
1641 | return; |
815 | |
1642 | |
816 | ev_start ((W)w, ++idlecnt); |
1643 | ev_start (EV_A_ (W)w, 1); |
817 | array_needsize (idles, idlemax, idlecnt, ); |
1644 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
818 | idles [idlecnt - 1] = w; |
|
|
819 | } |
1645 | } |
820 | |
1646 | |
821 | void evidle_stop (struct ev_idle *w) |
1647 | void |
|
|
1648 | ev_child_stop (EV_P_ struct ev_child *w) |
822 | { |
1649 | { |
823 | ev_clear ((W)w); |
1650 | ev_clear_pending (EV_A_ (W)w); |
824 | if (ev_is_active (w)) |
1651 | if (expect_false (!ev_is_active (w))) |
825 | return; |
1652 | return; |
826 | |
1653 | |
827 | idles [w->active - 1] = idles [--idlecnt]; |
1654 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
828 | ev_stop ((W)w); |
1655 | ev_stop (EV_A_ (W)w); |
829 | } |
|
|
830 | |
|
|
831 | void evcheck_start (struct ev_check *w) |
|
|
832 | { |
|
|
833 | if (ev_is_active (w)) |
|
|
834 | return; |
|
|
835 | |
|
|
836 | ev_start ((W)w, ++checkcnt); |
|
|
837 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
838 | checks [checkcnt - 1] = w; |
|
|
839 | } |
|
|
840 | |
|
|
841 | void evcheck_stop (struct ev_check *w) |
|
|
842 | { |
|
|
843 | ev_clear ((W)w); |
|
|
844 | if (ev_is_active (w)) |
|
|
845 | return; |
|
|
846 | |
|
|
847 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
848 | ev_stop ((W)w); |
|
|
849 | } |
1656 | } |
850 | |
1657 | |
851 | /*****************************************************************************/ |
1658 | /*****************************************************************************/ |
852 | |
1659 | |
853 | struct ev_once |
1660 | struct ev_once |
… | |
… | |
857 | void (*cb)(int revents, void *arg); |
1664 | void (*cb)(int revents, void *arg); |
858 | void *arg; |
1665 | void *arg; |
859 | }; |
1666 | }; |
860 | |
1667 | |
861 | static void |
1668 | static void |
862 | once_cb (struct ev_once *once, int revents) |
1669 | once_cb (EV_P_ struct ev_once *once, int revents) |
863 | { |
1670 | { |
864 | void (*cb)(int revents, void *arg) = once->cb; |
1671 | void (*cb)(int revents, void *arg) = once->cb; |
865 | void *arg = once->arg; |
1672 | void *arg = once->arg; |
866 | |
1673 | |
867 | evio_stop (&once->io); |
1674 | ev_io_stop (EV_A_ &once->io); |
868 | evtimer_stop (&once->to); |
1675 | ev_timer_stop (EV_A_ &once->to); |
869 | free (once); |
1676 | ev_free (once); |
870 | |
1677 | |
871 | cb (revents, arg); |
1678 | cb (revents, arg); |
872 | } |
1679 | } |
873 | |
1680 | |
874 | static void |
1681 | static void |
875 | once_cb_io (struct ev_io *w, int revents) |
1682 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
876 | { |
1683 | { |
877 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1684 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
878 | } |
1685 | } |
879 | |
1686 | |
880 | static void |
1687 | static void |
881 | once_cb_to (struct ev_timer *w, int revents) |
1688 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
882 | { |
1689 | { |
883 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1690 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
884 | } |
1691 | } |
885 | |
1692 | |
886 | void |
1693 | void |
887 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1694 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
888 | { |
1695 | { |
889 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
1696 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
890 | |
1697 | |
891 | if (!once) |
1698 | if (expect_false (!once)) |
892 | cb (EV_ERROR, arg); |
1699 | { |
893 | else |
1700 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
|
|
1701 | return; |
894 | { |
1702 | } |
|
|
1703 | |
895 | once->cb = cb; |
1704 | once->cb = cb; |
896 | once->arg = arg; |
1705 | once->arg = arg; |
897 | |
1706 | |
898 | evw_init (&once->io, once_cb_io); |
1707 | ev_init (&once->io, once_cb_io); |
899 | |
|
|
900 | if (fd >= 0) |
1708 | if (fd >= 0) |
901 | { |
1709 | { |
902 | evio_set (&once->io, fd, events); |
1710 | ev_io_set (&once->io, fd, events); |
903 | evio_start (&once->io); |
1711 | ev_io_start (EV_A_ &once->io); |
904 | } |
1712 | } |
905 | |
1713 | |
906 | evw_init (&once->to, once_cb_to); |
1714 | ev_init (&once->to, once_cb_to); |
907 | |
|
|
908 | if (timeout >= 0.) |
1715 | if (timeout >= 0.) |
909 | { |
1716 | { |
910 | evtimer_set (&once->to, timeout, 0.); |
1717 | ev_timer_set (&once->to, timeout, 0.); |
911 | evtimer_start (&once->to); |
1718 | ev_timer_start (EV_A_ &once->to); |
912 | } |
|
|
913 | } |
|
|
914 | } |
|
|
915 | |
|
|
916 | /*****************************************************************************/ |
|
|
917 | |
|
|
918 | #if 0 |
|
|
919 | |
|
|
920 | struct ev_io wio; |
|
|
921 | |
|
|
922 | static void |
|
|
923 | sin_cb (struct ev_io *w, int revents) |
|
|
924 | { |
|
|
925 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
926 | } |
|
|
927 | |
|
|
928 | static void |
|
|
929 | ocb (struct ev_timer *w, int revents) |
|
|
930 | { |
|
|
931 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
932 | evtimer_stop (w); |
|
|
933 | evtimer_start (w); |
|
|
934 | } |
|
|
935 | |
|
|
936 | static void |
|
|
937 | scb (struct ev_signal *w, int revents) |
|
|
938 | { |
|
|
939 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
940 | evio_stop (&wio); |
|
|
941 | evio_start (&wio); |
|
|
942 | } |
|
|
943 | |
|
|
944 | static void |
|
|
945 | gcb (struct ev_signal *w, int revents) |
|
|
946 | { |
|
|
947 | fprintf (stderr, "generic %x\n", revents); |
|
|
948 | |
|
|
949 | } |
|
|
950 | |
|
|
951 | int main (void) |
|
|
952 | { |
|
|
953 | ev_init (0); |
|
|
954 | |
|
|
955 | evio_init (&wio, sin_cb, 0, EV_READ); |
|
|
956 | evio_start (&wio); |
|
|
957 | |
|
|
958 | struct ev_timer t[10000]; |
|
|
959 | |
|
|
960 | #if 0 |
|
|
961 | int i; |
|
|
962 | for (i = 0; i < 10000; ++i) |
|
|
963 | { |
1719 | } |
964 | struct ev_timer *w = t + i; |
|
|
965 | evw_init (w, ocb, i); |
|
|
966 | evtimer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
967 | evtimer_start (w); |
|
|
968 | if (drand48 () < 0.5) |
|
|
969 | evtimer_stop (w); |
|
|
970 | } |
|
|
971 | #endif |
|
|
972 | |
|
|
973 | struct ev_timer t1; |
|
|
974 | evtimer_init (&t1, ocb, 5, 10); |
|
|
975 | evtimer_start (&t1); |
|
|
976 | |
|
|
977 | struct ev_signal sig; |
|
|
978 | evsignal_init (&sig, scb, SIGQUIT); |
|
|
979 | evsignal_start (&sig); |
|
|
980 | |
|
|
981 | struct ev_check cw; |
|
|
982 | evcheck_init (&cw, gcb); |
|
|
983 | evcheck_start (&cw); |
|
|
984 | |
|
|
985 | struct ev_idle iw; |
|
|
986 | evidle_init (&iw, gcb); |
|
|
987 | evidle_start (&iw); |
|
|
988 | |
|
|
989 | ev_loop (0); |
|
|
990 | |
|
|
991 | return 0; |
|
|
992 | } |
1720 | } |
993 | |
1721 | |
|
|
1722 | #ifdef __cplusplus |
|
|
1723 | } |
994 | #endif |
1724 | #endif |
995 | |
1725 | |
996 | |
|
|
997 | |
|
|
998 | |
|
|