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 | # ifdef EV_CONFIG_H |
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38 | # include EV_CONFIG_H |
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39 | # else |
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40 | # include "config.h" |
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41 | # endif |
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42 | |
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43 | # if HAVE_CLOCK_GETTIME |
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44 | # ifndef EV_USE_MONOTONIC |
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45 | # define EV_USE_MONOTONIC 1 |
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46 | # endif |
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47 | # ifndef EV_USE_REALTIME |
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48 | # define EV_USE_REALTIME 1 |
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49 | # endif |
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50 | # else |
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51 | # ifndef EV_USE_MONOTONIC |
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52 | # define EV_USE_MONOTONIC 0 |
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53 | # endif |
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54 | # ifndef EV_USE_REALTIME |
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55 | # define EV_USE_REALTIME 0 |
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56 | # endif |
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57 | # endif |
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58 | |
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59 | # ifndef EV_USE_SELECT |
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60 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
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61 | # define EV_USE_SELECT 1 |
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62 | # else |
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63 | # define EV_USE_SELECT 0 |
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64 | # endif |
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65 | # endif |
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66 | |
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67 | # ifndef EV_USE_POLL |
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68 | # if HAVE_POLL && HAVE_POLL_H |
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69 | # define EV_USE_POLL 1 |
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70 | # else |
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71 | # define EV_USE_POLL 0 |
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72 | # endif |
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73 | # endif |
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74 | |
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75 | # ifndef EV_USE_EPOLL |
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76 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
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77 | # define EV_USE_EPOLL 1 |
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78 | # else |
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79 | # define EV_USE_EPOLL 0 |
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80 | # endif |
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81 | # endif |
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82 | |
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83 | # ifndef EV_USE_KQUEUE |
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84 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
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85 | # define EV_USE_KQUEUE 1 |
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86 | # else |
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87 | # define EV_USE_KQUEUE 0 |
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88 | # endif |
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89 | # endif |
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90 | |
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91 | # ifndef EV_USE_PORT |
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92 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
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93 | # define EV_USE_PORT 1 |
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94 | # else |
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95 | # define EV_USE_PORT 0 |
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96 | # endif |
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97 | # endif |
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98 | |
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99 | #endif |
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100 | |
30 | #include <math.h> |
101 | #include <math.h> |
31 | #include <stdlib.h> |
102 | #include <stdlib.h> |
32 | #include <unistd.h> |
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33 | #include <fcntl.h> |
103 | #include <fcntl.h> |
34 | #include <signal.h> |
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35 | #include <stddef.h> |
104 | #include <stddef.h> |
36 | |
105 | |
37 | #include <stdio.h> |
106 | #include <stdio.h> |
38 | |
107 | |
39 | #include <assert.h> |
108 | #include <assert.h> |
40 | #include <errno.h> |
109 | #include <errno.h> |
41 | #include <sys/types.h> |
110 | #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> |
111 | #include <time.h> |
45 | |
112 | |
46 | #ifndef HAVE_MONOTONIC |
113 | #include <signal.h> |
47 | # ifdef CLOCK_MONOTONIC |
114 | |
48 | # define HAVE_MONOTONIC 1 |
115 | #ifndef _WIN32 |
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116 | # include <unistd.h> |
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117 | # include <sys/time.h> |
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118 | # include <sys/wait.h> |
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119 | #else |
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120 | # define WIN32_LEAN_AND_MEAN |
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121 | # include <windows.h> |
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122 | # ifndef EV_SELECT_IS_WINSOCKET |
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123 | # define EV_SELECT_IS_WINSOCKET 1 |
49 | # endif |
124 | # endif |
50 | #endif |
125 | #endif |
51 | |
126 | |
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127 | /**/ |
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128 | |
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129 | #ifndef EV_USE_MONOTONIC |
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130 | # define EV_USE_MONOTONIC 0 |
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131 | #endif |
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132 | |
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133 | #ifndef EV_USE_REALTIME |
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134 | # define EV_USE_REALTIME 0 |
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135 | #endif |
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136 | |
52 | #ifndef HAVE_SELECT |
137 | #ifndef EV_USE_SELECT |
53 | # define HAVE_SELECT 1 |
138 | # define EV_USE_SELECT 1 |
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139 | #endif |
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140 | |
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141 | #ifndef EV_USE_POLL |
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142 | # ifdef _WIN32 |
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143 | # define EV_USE_POLL 0 |
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144 | # else |
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145 | # define EV_USE_POLL 1 |
54 | #endif |
146 | # endif |
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147 | #endif |
55 | |
148 | |
56 | #ifndef HAVE_EPOLL |
149 | #ifndef EV_USE_EPOLL |
57 | # define HAVE_EPOLL 0 |
150 | # define EV_USE_EPOLL 0 |
58 | #endif |
151 | #endif |
59 | |
152 | |
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153 | #ifndef EV_USE_KQUEUE |
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154 | # define EV_USE_KQUEUE 0 |
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155 | #endif |
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156 | |
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157 | #ifndef EV_USE_PORT |
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158 | # define EV_USE_PORT 0 |
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159 | #endif |
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160 | |
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161 | /**/ |
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162 | |
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163 | #ifndef CLOCK_MONOTONIC |
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164 | # undef EV_USE_MONOTONIC |
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165 | # define EV_USE_MONOTONIC 0 |
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166 | #endif |
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167 | |
60 | #ifndef HAVE_REALTIME |
168 | #ifndef CLOCK_REALTIME |
61 | # define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
169 | # undef EV_USE_REALTIME |
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170 | # define EV_USE_REALTIME 0 |
62 | #endif |
171 | #endif |
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172 | |
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173 | #if EV_SELECT_IS_WINSOCKET |
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174 | # include <winsock.h> |
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175 | #endif |
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176 | |
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177 | /**/ |
63 | |
178 | |
64 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
179 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
65 | #define MAX_BLOCKTIME 60. |
180 | #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 */ |
181 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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182 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ |
67 | |
183 | |
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184 | #ifdef EV_H |
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185 | # include EV_H |
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186 | #else |
68 | #include "ev.h" |
187 | # include "ev.h" |
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188 | #endif |
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189 | |
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190 | #if __GNUC__ >= 3 |
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191 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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192 | # define inline static inline |
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193 | #else |
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194 | # define expect(expr,value) (expr) |
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195 | # define inline static |
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196 | #endif |
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197 | |
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198 | #define expect_false(expr) expect ((expr) != 0, 0) |
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199 | #define expect_true(expr) expect ((expr) != 0, 1) |
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200 | |
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201 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
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202 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
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203 | |
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204 | #define EMPTY0 /* required for microsofts broken pseudo-c compiler */ |
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205 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
69 | |
206 | |
70 | typedef struct ev_watcher *W; |
207 | typedef struct ev_watcher *W; |
71 | typedef struct ev_watcher_list *WL; |
208 | typedef struct ev_watcher_list *WL; |
72 | typedef struct ev_watcher_time *WT; |
209 | typedef struct ev_watcher_time *WT; |
73 | |
210 | |
74 | static ev_tstamp now, diff; /* monotonic clock */ |
211 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
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212 | |
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213 | #ifdef _WIN32 |
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214 | # include "ev_win32.c" |
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215 | #endif |
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216 | |
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217 | /*****************************************************************************/ |
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218 | |
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219 | static void (*syserr_cb)(const char *msg); |
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220 | |
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221 | void ev_set_syserr_cb (void (*cb)(const char *msg)) |
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222 | { |
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223 | syserr_cb = cb; |
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224 | } |
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225 | |
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226 | static void |
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227 | syserr (const char *msg) |
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228 | { |
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229 | if (!msg) |
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230 | msg = "(libev) system error"; |
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231 | |
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232 | if (syserr_cb) |
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233 | syserr_cb (msg); |
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234 | else |
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235 | { |
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236 | perror (msg); |
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237 | abort (); |
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238 | } |
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239 | } |
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240 | |
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241 | static void *(*alloc)(void *ptr, long size); |
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242 | |
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243 | void ev_set_allocator (void *(*cb)(void *ptr, long size)) |
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244 | { |
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245 | alloc = cb; |
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246 | } |
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247 | |
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248 | static void * |
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249 | ev_realloc (void *ptr, long size) |
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250 | { |
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251 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
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252 | |
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253 | if (!ptr && size) |
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254 | { |
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255 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
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256 | abort (); |
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257 | } |
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258 | |
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259 | return ptr; |
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260 | } |
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261 | |
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262 | #define ev_malloc(size) ev_realloc (0, (size)) |
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263 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
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264 | |
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265 | /*****************************************************************************/ |
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266 | |
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267 | typedef struct |
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268 | { |
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269 | WL head; |
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270 | unsigned char events; |
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271 | unsigned char reify; |
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272 | #if EV_SELECT_IS_WINSOCKET |
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273 | SOCKET handle; |
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274 | #endif |
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275 | } ANFD; |
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276 | |
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277 | typedef struct |
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278 | { |
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279 | W w; |
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280 | int events; |
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281 | } ANPENDING; |
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282 | |
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283 | #if EV_MULTIPLICITY |
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284 | |
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285 | struct ev_loop |
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286 | { |
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287 | ev_tstamp ev_rt_now; |
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288 | #define ev_rt_now ((loop)->ev_rt_now) |
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289 | #define VAR(name,decl) decl; |
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290 | #include "ev_vars.h" |
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291 | #undef VAR |
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292 | }; |
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293 | #include "ev_wrap.h" |
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294 | |
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295 | static struct ev_loop default_loop_struct; |
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296 | struct ev_loop *ev_default_loop_ptr; |
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297 | |
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298 | #else |
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299 | |
75 | ev_tstamp ev_now; |
300 | ev_tstamp ev_rt_now; |
76 | int ev_method; |
301 | #define VAR(name,decl) static decl; |
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302 | #include "ev_vars.h" |
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303 | #undef VAR |
77 | |
304 | |
78 | static int have_monotonic; /* runtime */ |
305 | static int ev_default_loop_ptr; |
79 | |
306 | |
80 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
307 | #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 | |
308 | |
84 | /*****************************************************************************/ |
309 | /*****************************************************************************/ |
85 | |
310 | |
86 | ev_tstamp |
311 | ev_tstamp |
87 | ev_time (void) |
312 | ev_time (void) |
88 | { |
313 | { |
89 | #if HAVE_REALTIME |
314 | #if EV_USE_REALTIME |
90 | struct timespec ts; |
315 | struct timespec ts; |
91 | clock_gettime (CLOCK_REALTIME, &ts); |
316 | clock_gettime (CLOCK_REALTIME, &ts); |
92 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
317 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
93 | #else |
318 | #else |
94 | struct timeval tv; |
319 | struct timeval tv; |
95 | gettimeofday (&tv, 0); |
320 | gettimeofday (&tv, 0); |
96 | return tv.tv_sec + tv.tv_usec * 1e-6; |
321 | return tv.tv_sec + tv.tv_usec * 1e-6; |
97 | #endif |
322 | #endif |
98 | } |
323 | } |
99 | |
324 | |
100 | static ev_tstamp |
325 | inline ev_tstamp |
101 | get_clock (void) |
326 | get_clock (void) |
102 | { |
327 | { |
103 | #if HAVE_MONOTONIC |
328 | #if EV_USE_MONOTONIC |
104 | if (have_monotonic) |
329 | if (expect_true (have_monotonic)) |
105 | { |
330 | { |
106 | struct timespec ts; |
331 | struct timespec ts; |
107 | clock_gettime (CLOCK_MONOTONIC, &ts); |
332 | clock_gettime (CLOCK_MONOTONIC, &ts); |
108 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
333 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
109 | } |
334 | } |
110 | #endif |
335 | #endif |
111 | |
336 | |
112 | return ev_time (); |
337 | return ev_time (); |
113 | } |
338 | } |
114 | |
339 | |
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340 | #if EV_MULTIPLICITY |
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341 | ev_tstamp |
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342 | ev_now (EV_P) |
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343 | { |
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344 | return ev_rt_now; |
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345 | } |
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346 | #endif |
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347 | |
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348 | #define array_roundsize(type,n) (((n) | 4) & ~3) |
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349 | |
115 | #define array_needsize(base,cur,cnt,init) \ |
350 | #define array_needsize(type,base,cur,cnt,init) \ |
116 | if ((cnt) > cur) \ |
351 | if (expect_false ((cnt) > cur)) \ |
117 | { \ |
352 | { \ |
118 | int newcnt = cur; \ |
353 | int newcnt = cur; \ |
119 | do \ |
354 | do \ |
120 | { \ |
355 | { \ |
121 | newcnt = (newcnt << 1) | 4 & ~3; \ |
356 | newcnt = array_roundsize (type, newcnt << 1); \ |
122 | } \ |
357 | } \ |
123 | while ((cnt) > newcnt); \ |
358 | while ((cnt) > newcnt); \ |
124 | \ |
359 | \ |
125 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
360 | base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\ |
126 | init (base + cur, newcnt - cur); \ |
361 | init (base + cur, newcnt - cur); \ |
127 | cur = newcnt; \ |
362 | cur = newcnt; \ |
128 | } |
363 | } |
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364 | |
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365 | #define array_slim(type,stem) \ |
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366 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
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367 | { \ |
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368 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
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369 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
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370 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
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371 | } |
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372 | |
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373 | #define array_free(stem, idx) \ |
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374 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
129 | |
375 | |
130 | /*****************************************************************************/ |
376 | /*****************************************************************************/ |
131 | |
377 | |
132 | typedef struct |
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133 | { |
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134 | struct ev_io *head; |
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135 | unsigned char wev, rev; /* want, received event set */ |
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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 | |
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141 | static int *fdchanges; |
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142 | static int fdchangemax, fdchangecnt; |
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143 | |
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144 | static void |
378 | static void |
145 | anfds_init (ANFD *base, int count) |
379 | anfds_init (ANFD *base, int count) |
146 | { |
380 | { |
147 | while (count--) |
381 | while (count--) |
148 | { |
382 | { |
149 | base->head = 0; |
383 | base->head = 0; |
150 | base->wev = base->rev = EV_NONE; |
384 | base->events = EV_NONE; |
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385 | base->reify = 0; |
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386 | |
151 | ++base; |
387 | ++base; |
152 | } |
388 | } |
153 | } |
389 | } |
154 | |
390 | |
155 | typedef struct |
391 | void |
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392 | ev_feed_event (EV_P_ void *w, int revents) |
156 | { |
393 | { |
157 | W w; |
394 | W w_ = (W)w; |
158 | int events; |
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159 | } ANPENDING; |
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160 | |
395 | |
161 | static ANPENDING *pendings; |
396 | if (expect_false (w_->pending)) |
162 | static int pendingmax, pendingcnt; |
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163 | |
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164 | static void |
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165 | event (W w, int events) |
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166 | { |
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167 | if (w->active) |
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168 | { |
397 | { |
169 | w->pending = ++pendingcnt; |
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170 | array_needsize (pendings, pendingmax, pendingcnt, ); |
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171 | pendings [pendingcnt - 1].w = w; |
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172 | pendings [pendingcnt - 1].events = events; |
398 | pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; |
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399 | return; |
173 | } |
400 | } |
174 | } |
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175 | |
401 | |
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402 | if (expect_false (!w_->cb)) |
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403 | return; |
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404 | |
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405 | w_->pending = ++pendingcnt [ABSPRI (w_)]; |
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406 | array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2); |
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407 | pendings [ABSPRI (w_)][w_->pending - 1].w = w_; |
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408 | pendings [ABSPRI (w_)][w_->pending - 1].events = revents; |
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409 | } |
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410 | |
176 | static void |
411 | static void |
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412 | queue_events (EV_P_ W *events, int eventcnt, int type) |
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413 | { |
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414 | int i; |
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415 | |
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416 | for (i = 0; i < eventcnt; ++i) |
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417 | ev_feed_event (EV_A_ events [i], type); |
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418 | } |
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419 | |
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420 | inline void |
177 | fd_event (int fd, int events) |
421 | fd_event (EV_P_ int fd, int revents) |
178 | { |
422 | { |
179 | ANFD *anfd = anfds + fd; |
423 | ANFD *anfd = anfds + fd; |
180 | struct ev_io *w; |
424 | struct ev_io *w; |
181 | |
425 | |
182 | for (w = anfd->head; w; w = w->next) |
426 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
183 | { |
427 | { |
184 | int ev = w->events & events; |
428 | int ev = w->events & revents; |
185 | |
429 | |
186 | if (ev) |
430 | if (ev) |
187 | event ((W)w, ev); |
431 | ev_feed_event (EV_A_ (W)w, ev); |
188 | } |
432 | } |
189 | } |
433 | } |
190 | |
434 | |
191 | static void |
435 | void |
192 | queue_events (W *events, int eventcnt, int type) |
436 | ev_feed_fd_event (EV_P_ int fd, int revents) |
|
|
437 | { |
|
|
438 | fd_event (EV_A_ fd, revents); |
|
|
439 | } |
|
|
440 | |
|
|
441 | /*****************************************************************************/ |
|
|
442 | |
|
|
443 | inline void |
|
|
444 | fd_reify (EV_P) |
193 | { |
445 | { |
194 | int i; |
446 | int i; |
195 | |
447 | |
196 | for (i = 0; i < eventcnt; ++i) |
448 | for (i = 0; i < fdchangecnt; ++i) |
197 | event (events [i], type); |
449 | { |
|
|
450 | int fd = fdchanges [i]; |
|
|
451 | ANFD *anfd = anfds + fd; |
|
|
452 | struct ev_io *w; |
|
|
453 | |
|
|
454 | int events = 0; |
|
|
455 | |
|
|
456 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
|
|
457 | events |= w->events; |
|
|
458 | |
|
|
459 | #if EV_SELECT_IS_WINSOCKET |
|
|
460 | if (events) |
|
|
461 | { |
|
|
462 | unsigned long argp; |
|
|
463 | anfd->handle = _get_osfhandle (fd); |
|
|
464 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
|
|
465 | } |
|
|
466 | #endif |
|
|
467 | |
|
|
468 | anfd->reify = 0; |
|
|
469 | |
|
|
470 | backend_modify (EV_A_ fd, anfd->events, events); |
|
|
471 | anfd->events = events; |
|
|
472 | } |
|
|
473 | |
|
|
474 | fdchangecnt = 0; |
|
|
475 | } |
|
|
476 | |
|
|
477 | static void |
|
|
478 | fd_change (EV_P_ int fd) |
|
|
479 | { |
|
|
480 | if (expect_false (anfds [fd].reify)) |
|
|
481 | return; |
|
|
482 | |
|
|
483 | anfds [fd].reify = 1; |
|
|
484 | |
|
|
485 | ++fdchangecnt; |
|
|
486 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
|
|
487 | fdchanges [fdchangecnt - 1] = fd; |
|
|
488 | } |
|
|
489 | |
|
|
490 | static void |
|
|
491 | fd_kill (EV_P_ int fd) |
|
|
492 | { |
|
|
493 | struct ev_io *w; |
|
|
494 | |
|
|
495 | while ((w = (struct ev_io *)anfds [fd].head)) |
|
|
496 | { |
|
|
497 | ev_io_stop (EV_A_ w); |
|
|
498 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
499 | } |
|
|
500 | } |
|
|
501 | |
|
|
502 | inline int |
|
|
503 | fd_valid (int fd) |
|
|
504 | { |
|
|
505 | #ifdef _WIN32 |
|
|
506 | return _get_osfhandle (fd) != -1; |
|
|
507 | #else |
|
|
508 | return fcntl (fd, F_GETFD) != -1; |
|
|
509 | #endif |
198 | } |
510 | } |
199 | |
511 | |
200 | /* called on EBADF to verify fds */ |
512 | /* called on EBADF to verify fds */ |
201 | static void |
513 | static void |
202 | fd_recheck (void) |
514 | fd_ebadf (EV_P) |
203 | { |
515 | { |
204 | int fd; |
516 | int fd; |
205 | |
517 | |
206 | for (fd = 0; fd < anfdmax; ++fd) |
518 | for (fd = 0; fd < anfdmax; ++fd) |
207 | if (anfds [fd].wev) |
519 | if (anfds [fd].events) |
208 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
520 | if (!fd_valid (fd) == -1 && errno == EBADF) |
209 | while (anfds [fd].head) |
521 | fd_kill (EV_A_ fd); |
|
|
522 | } |
|
|
523 | |
|
|
524 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
525 | static void |
|
|
526 | fd_enomem (EV_P) |
|
|
527 | { |
|
|
528 | int fd; |
|
|
529 | |
|
|
530 | for (fd = anfdmax; fd--; ) |
|
|
531 | if (anfds [fd].events) |
210 | { |
532 | { |
211 | event ((W)anfds [fd].head, EV_ERROR); |
533 | fd_kill (EV_A_ fd); |
212 | evio_stop (anfds [fd].head); |
534 | return; |
213 | } |
535 | } |
|
|
536 | } |
|
|
537 | |
|
|
538 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
|
|
539 | static void |
|
|
540 | fd_rearm_all (EV_P) |
|
|
541 | { |
|
|
542 | int fd; |
|
|
543 | |
|
|
544 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
545 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
546 | if (anfds [fd].events) |
|
|
547 | { |
|
|
548 | anfds [fd].events = 0; |
|
|
549 | fd_change (EV_A_ fd); |
|
|
550 | } |
214 | } |
551 | } |
215 | |
552 | |
216 | /*****************************************************************************/ |
553 | /*****************************************************************************/ |
217 | |
554 | |
218 | static struct ev_timer **timers; |
|
|
219 | static int timermax, timercnt; |
|
|
220 | |
|
|
221 | static struct ev_periodic **periodics; |
|
|
222 | static int periodicmax, periodiccnt; |
|
|
223 | |
|
|
224 | static void |
555 | static void |
225 | upheap (WT *timers, int k) |
556 | upheap (WT *heap, int k) |
226 | { |
557 | { |
227 | WT w = timers [k]; |
558 | WT w = heap [k]; |
228 | |
559 | |
229 | while (k && timers [k >> 1]->at > w->at) |
560 | while (k && heap [k >> 1]->at > w->at) |
230 | { |
561 | { |
231 | timers [k] = timers [k >> 1]; |
562 | heap [k] = heap [k >> 1]; |
232 | timers [k]->active = k + 1; |
563 | ((W)heap [k])->active = k + 1; |
233 | k >>= 1; |
564 | k >>= 1; |
234 | } |
565 | } |
235 | |
566 | |
236 | timers [k] = w; |
567 | heap [k] = w; |
237 | timers [k]->active = k + 1; |
568 | ((W)heap [k])->active = k + 1; |
238 | |
569 | |
239 | } |
570 | } |
240 | |
571 | |
241 | static void |
572 | static void |
242 | downheap (WT *timers, int N, int k) |
573 | downheap (WT *heap, int N, int k) |
243 | { |
574 | { |
244 | WT w = timers [k]; |
575 | WT w = heap [k]; |
245 | |
576 | |
246 | while (k < (N >> 1)) |
577 | while (k < (N >> 1)) |
247 | { |
578 | { |
248 | int j = k << 1; |
579 | int j = k << 1; |
249 | |
580 | |
250 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
581 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
251 | ++j; |
582 | ++j; |
252 | |
583 | |
253 | if (w->at <= timers [j]->at) |
584 | if (w->at <= heap [j]->at) |
254 | break; |
585 | break; |
255 | |
586 | |
256 | timers [k] = timers [j]; |
587 | heap [k] = heap [j]; |
257 | timers [k]->active = k + 1; |
588 | ((W)heap [k])->active = k + 1; |
258 | k = j; |
589 | k = j; |
259 | } |
590 | } |
260 | |
591 | |
261 | timers [k] = w; |
592 | heap [k] = w; |
262 | timers [k]->active = k + 1; |
593 | ((W)heap [k])->active = k + 1; |
|
|
594 | } |
|
|
595 | |
|
|
596 | inline void |
|
|
597 | adjustheap (WT *heap, int N, int k) |
|
|
598 | { |
|
|
599 | upheap (heap, k); |
|
|
600 | downheap (heap, N, k); |
263 | } |
601 | } |
264 | |
602 | |
265 | /*****************************************************************************/ |
603 | /*****************************************************************************/ |
266 | |
604 | |
267 | typedef struct |
605 | typedef struct |
268 | { |
606 | { |
269 | struct ev_signal *head; |
607 | WL head; |
270 | sig_atomic_t gotsig; |
608 | sig_atomic_t volatile gotsig; |
271 | } ANSIG; |
609 | } ANSIG; |
272 | |
610 | |
273 | static ANSIG *signals; |
611 | static ANSIG *signals; |
274 | static int signalmax; |
612 | static int signalmax; |
275 | |
613 | |
276 | static int sigpipe [2]; |
614 | static int sigpipe [2]; |
277 | static sig_atomic_t gotsig; |
615 | static sig_atomic_t volatile gotsig; |
278 | static struct ev_io sigev; |
616 | static struct ev_io sigev; |
279 | |
617 | |
280 | static void |
618 | static void |
281 | signals_init (ANSIG *base, int count) |
619 | signals_init (ANSIG *base, int count) |
282 | { |
620 | { |
283 | while (count--) |
621 | while (count--) |
284 | { |
622 | { |
285 | base->head = 0; |
623 | base->head = 0; |
286 | base->gotsig = 0; |
624 | base->gotsig = 0; |
|
|
625 | |
287 | ++base; |
626 | ++base; |
288 | } |
627 | } |
289 | } |
628 | } |
290 | |
629 | |
291 | static void |
630 | static void |
292 | sighandler (int signum) |
631 | sighandler (int signum) |
293 | { |
632 | { |
|
|
633 | #if _WIN32 |
|
|
634 | signal (signum, sighandler); |
|
|
635 | #endif |
|
|
636 | |
294 | signals [signum - 1].gotsig = 1; |
637 | signals [signum - 1].gotsig = 1; |
295 | |
638 | |
296 | if (!gotsig) |
639 | if (!gotsig) |
297 | { |
640 | { |
|
|
641 | int old_errno = errno; |
298 | gotsig = 1; |
642 | gotsig = 1; |
299 | write (sigpipe [1], &gotsig, 1); |
643 | write (sigpipe [1], &signum, 1); |
|
|
644 | errno = old_errno; |
300 | } |
645 | } |
301 | } |
646 | } |
302 | |
647 | |
|
|
648 | void |
|
|
649 | ev_feed_signal_event (EV_P_ int signum) |
|
|
650 | { |
|
|
651 | WL w; |
|
|
652 | |
|
|
653 | #if EV_MULTIPLICITY |
|
|
654 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
655 | #endif |
|
|
656 | |
|
|
657 | --signum; |
|
|
658 | |
|
|
659 | if (signum < 0 || signum >= signalmax) |
|
|
660 | return; |
|
|
661 | |
|
|
662 | signals [signum].gotsig = 0; |
|
|
663 | |
|
|
664 | for (w = signals [signum].head; w; w = w->next) |
|
|
665 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
666 | } |
|
|
667 | |
303 | static void |
668 | static void |
304 | sigcb (struct ev_io *iow, int revents) |
669 | sigcb (EV_P_ struct ev_io *iow, int revents) |
305 | { |
670 | { |
306 | struct ev_signal *w; |
|
|
307 | int sig; |
671 | int signum; |
308 | |
672 | |
|
|
673 | read (sigpipe [0], &revents, 1); |
309 | gotsig = 0; |
674 | gotsig = 0; |
310 | read (sigpipe [0], &revents, 1); |
|
|
311 | |
675 | |
312 | for (sig = signalmax; sig--; ) |
676 | for (signum = signalmax; signum--; ) |
313 | if (signals [sig].gotsig) |
677 | if (signals [signum].gotsig) |
314 | { |
678 | ev_feed_signal_event (EV_A_ signum + 1); |
315 | signals [sig].gotsig = 0; |
|
|
316 | |
|
|
317 | for (w = signals [sig].head; w; w = w->next) |
|
|
318 | event ((W)w, EV_SIGNAL); |
|
|
319 | } |
|
|
320 | } |
679 | } |
321 | |
680 | |
322 | static void |
681 | static void |
323 | siginit (void) |
682 | fd_intern (int fd) |
324 | { |
683 | { |
|
|
684 | #ifdef _WIN32 |
|
|
685 | int arg = 1; |
|
|
686 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
687 | #else |
325 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
688 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
326 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
327 | |
|
|
328 | /* rather than sort out wether we really need nb, set it */ |
|
|
329 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
689 | fcntl (fd, F_SETFL, O_NONBLOCK); |
330 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
690 | #endif |
|
|
691 | } |
331 | |
692 | |
|
|
693 | static void |
|
|
694 | siginit (EV_P) |
|
|
695 | { |
|
|
696 | fd_intern (sigpipe [0]); |
|
|
697 | fd_intern (sigpipe [1]); |
|
|
698 | |
332 | evio_set (&sigev, sigpipe [0], EV_READ); |
699 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
333 | evio_start (&sigev); |
700 | ev_io_start (EV_A_ &sigev); |
|
|
701 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
334 | } |
702 | } |
335 | |
703 | |
336 | /*****************************************************************************/ |
704 | /*****************************************************************************/ |
337 | |
705 | |
338 | static struct ev_idle **idles; |
|
|
339 | static int idlemax, idlecnt; |
|
|
340 | |
|
|
341 | static struct ev_prepare **prepares; |
|
|
342 | static int preparemax, preparecnt; |
|
|
343 | |
|
|
344 | static struct ev_check **checks; |
|
|
345 | static int checkmax, checkcnt; |
|
|
346 | |
|
|
347 | /*****************************************************************************/ |
|
|
348 | |
|
|
349 | static struct ev_child *childs [PID_HASHSIZE]; |
706 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
707 | |
|
|
708 | #ifndef _WIN32 |
|
|
709 | |
350 | static struct ev_signal childev; |
710 | static struct ev_signal childev; |
351 | |
711 | |
352 | #ifndef WCONTINUED |
712 | #ifndef WCONTINUED |
353 | # define WCONTINUED 0 |
713 | # define WCONTINUED 0 |
354 | #endif |
714 | #endif |
355 | |
715 | |
356 | static void |
716 | static void |
357 | childcb (struct ev_signal *sw, int revents) |
717 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
358 | { |
718 | { |
359 | struct ev_child *w; |
719 | struct ev_child *w; |
|
|
720 | |
|
|
721 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
722 | if (w->pid == pid || !w->pid) |
|
|
723 | { |
|
|
724 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
|
|
725 | w->rpid = pid; |
|
|
726 | w->rstatus = status; |
|
|
727 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
728 | } |
|
|
729 | } |
|
|
730 | |
|
|
731 | static void |
|
|
732 | childcb (EV_P_ struct ev_signal *sw, int revents) |
|
|
733 | { |
360 | int pid, status; |
734 | int pid, status; |
361 | |
735 | |
362 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
736 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
363 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
737 | { |
364 | if (w->pid == pid || w->pid == -1) |
738 | /* make sure we are called again until all childs have been reaped */ |
365 | { |
739 | /* we need to do it this way so that the callback gets called before we continue */ |
366 | w->status = status; |
740 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
367 | event ((W)w, EV_CHILD); |
741 | |
368 | } |
742 | child_reap (EV_A_ sw, pid, pid, status); |
|
|
743 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
|
|
744 | } |
369 | } |
745 | } |
|
|
746 | |
|
|
747 | #endif |
370 | |
748 | |
371 | /*****************************************************************************/ |
749 | /*****************************************************************************/ |
372 | |
750 | |
|
|
751 | #if EV_USE_PORT |
|
|
752 | # include "ev_port.c" |
|
|
753 | #endif |
|
|
754 | #if EV_USE_KQUEUE |
|
|
755 | # include "ev_kqueue.c" |
|
|
756 | #endif |
373 | #if HAVE_EPOLL |
757 | #if EV_USE_EPOLL |
374 | # include "ev_epoll.c" |
758 | # include "ev_epoll.c" |
375 | #endif |
759 | #endif |
|
|
760 | #if EV_USE_POLL |
|
|
761 | # include "ev_poll.c" |
|
|
762 | #endif |
376 | #if HAVE_SELECT |
763 | #if EV_USE_SELECT |
377 | # include "ev_select.c" |
764 | # include "ev_select.c" |
378 | #endif |
765 | #endif |
379 | |
766 | |
380 | int |
767 | int |
381 | ev_version_major (void) |
768 | ev_version_major (void) |
… | |
… | |
387 | ev_version_minor (void) |
774 | ev_version_minor (void) |
388 | { |
775 | { |
389 | return EV_VERSION_MINOR; |
776 | return EV_VERSION_MINOR; |
390 | } |
777 | } |
391 | |
778 | |
392 | int ev_init (int flags) |
779 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
780 | static int |
|
|
781 | enable_secure (void) |
393 | { |
782 | { |
394 | if (!ev_method) |
783 | #ifdef _WIN32 |
|
|
784 | return 0; |
|
|
785 | #else |
|
|
786 | return getuid () != geteuid () |
|
|
787 | || getgid () != getegid (); |
|
|
788 | #endif |
|
|
789 | } |
|
|
790 | |
|
|
791 | unsigned int |
|
|
792 | ev_supported_backends (void) |
|
|
793 | { |
|
|
794 | unsigned int flags = 0; |
|
|
795 | |
|
|
796 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
797 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
798 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
799 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
800 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
801 | |
|
|
802 | return flags; |
|
|
803 | } |
|
|
804 | |
|
|
805 | unsigned int |
|
|
806 | ev_recommended_backends (void) |
|
|
807 | { |
|
|
808 | unsigned int flags = ev_supported_backends (); |
|
|
809 | |
|
|
810 | #ifndef __NetBSD__ |
|
|
811 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
812 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
813 | flags &= ~EVBACKEND_KQUEUE; |
|
|
814 | #endif |
|
|
815 | #ifdef __APPLE__ |
|
|
816 | // flags &= ~EVBACKEND_KQUEUE; for documentation |
|
|
817 | flags &= ~EVBACKEND_POLL; |
|
|
818 | #endif |
|
|
819 | |
|
|
820 | return flags; |
|
|
821 | } |
|
|
822 | |
|
|
823 | unsigned int |
|
|
824 | ev_embeddable_backends (void) |
|
|
825 | { |
|
|
826 | return EVBACKEND_EPOLL |
|
|
827 | | EVBACKEND_KQUEUE |
|
|
828 | | EVBACKEND_PORT; |
|
|
829 | } |
|
|
830 | |
|
|
831 | unsigned int |
|
|
832 | ev_backend (EV_P) |
|
|
833 | { |
|
|
834 | return backend; |
|
|
835 | } |
|
|
836 | |
|
|
837 | static void |
|
|
838 | loop_init (EV_P_ unsigned int flags) |
|
|
839 | { |
|
|
840 | if (!backend) |
395 | { |
841 | { |
396 | #if HAVE_MONOTONIC |
842 | #if EV_USE_MONOTONIC |
397 | { |
843 | { |
398 | struct timespec ts; |
844 | struct timespec ts; |
399 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
845 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
400 | have_monotonic = 1; |
846 | have_monotonic = 1; |
401 | } |
847 | } |
402 | #endif |
848 | #endif |
403 | |
849 | |
404 | ev_now = ev_time (); |
850 | ev_rt_now = ev_time (); |
405 | now = get_clock (); |
851 | mn_now = get_clock (); |
|
|
852 | now_floor = mn_now; |
406 | diff = ev_now - now; |
853 | rtmn_diff = ev_rt_now - mn_now; |
407 | |
854 | |
|
|
855 | if (!(flags & EVFLAG_NOENV) |
|
|
856 | && !enable_secure () |
|
|
857 | && getenv ("LIBEV_FLAGS")) |
|
|
858 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
859 | |
|
|
860 | if (!(flags & 0x0000ffffUL)) |
|
|
861 | flags |= ev_recommended_backends (); |
|
|
862 | |
|
|
863 | backend = 0; |
|
|
864 | #if EV_USE_PORT |
|
|
865 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
866 | #endif |
|
|
867 | #if EV_USE_KQUEUE |
|
|
868 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
869 | #endif |
|
|
870 | #if EV_USE_EPOLL |
|
|
871 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
|
|
872 | #endif |
|
|
873 | #if EV_USE_POLL |
|
|
874 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
|
|
875 | #endif |
|
|
876 | #if EV_USE_SELECT |
|
|
877 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
|
|
878 | #endif |
|
|
879 | |
|
|
880 | ev_init (&sigev, sigcb); |
|
|
881 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
882 | } |
|
|
883 | } |
|
|
884 | |
|
|
885 | static void |
|
|
886 | loop_destroy (EV_P) |
|
|
887 | { |
|
|
888 | int i; |
|
|
889 | |
|
|
890 | #if EV_USE_PORT |
|
|
891 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
892 | #endif |
|
|
893 | #if EV_USE_KQUEUE |
|
|
894 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
895 | #endif |
|
|
896 | #if EV_USE_EPOLL |
|
|
897 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
898 | #endif |
|
|
899 | #if EV_USE_POLL |
|
|
900 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
901 | #endif |
|
|
902 | #if EV_USE_SELECT |
|
|
903 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
904 | #endif |
|
|
905 | |
|
|
906 | for (i = NUMPRI; i--; ) |
|
|
907 | array_free (pending, [i]); |
|
|
908 | |
|
|
909 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
910 | array_free (fdchange, EMPTY0); |
|
|
911 | array_free (timer, EMPTY0); |
|
|
912 | #if EV_PERIODICS |
|
|
913 | array_free (periodic, EMPTY0); |
|
|
914 | #endif |
|
|
915 | array_free (idle, EMPTY0); |
|
|
916 | array_free (prepare, EMPTY0); |
|
|
917 | array_free (check, EMPTY0); |
|
|
918 | |
|
|
919 | backend = 0; |
|
|
920 | } |
|
|
921 | |
|
|
922 | static void |
|
|
923 | loop_fork (EV_P) |
|
|
924 | { |
|
|
925 | #if EV_USE_PORT |
|
|
926 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
927 | #endif |
|
|
928 | #if EV_USE_KQUEUE |
|
|
929 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
930 | #endif |
|
|
931 | #if EV_USE_EPOLL |
|
|
932 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
933 | #endif |
|
|
934 | |
|
|
935 | if (ev_is_active (&sigev)) |
|
|
936 | { |
|
|
937 | /* default loop */ |
|
|
938 | |
|
|
939 | ev_ref (EV_A); |
|
|
940 | ev_io_stop (EV_A_ &sigev); |
|
|
941 | close (sigpipe [0]); |
|
|
942 | close (sigpipe [1]); |
|
|
943 | |
|
|
944 | while (pipe (sigpipe)) |
|
|
945 | syserr ("(libev) error creating pipe"); |
|
|
946 | |
|
|
947 | siginit (EV_A); |
|
|
948 | } |
|
|
949 | |
|
|
950 | postfork = 0; |
|
|
951 | } |
|
|
952 | |
|
|
953 | #if EV_MULTIPLICITY |
|
|
954 | struct ev_loop * |
|
|
955 | ev_loop_new (unsigned int flags) |
|
|
956 | { |
|
|
957 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
958 | |
|
|
959 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
960 | |
|
|
961 | loop_init (EV_A_ flags); |
|
|
962 | |
|
|
963 | if (ev_backend (EV_A)) |
|
|
964 | return loop; |
|
|
965 | |
|
|
966 | return 0; |
|
|
967 | } |
|
|
968 | |
|
|
969 | void |
|
|
970 | ev_loop_destroy (EV_P) |
|
|
971 | { |
|
|
972 | loop_destroy (EV_A); |
|
|
973 | ev_free (loop); |
|
|
974 | } |
|
|
975 | |
|
|
976 | void |
|
|
977 | ev_loop_fork (EV_P) |
|
|
978 | { |
|
|
979 | postfork = 1; |
|
|
980 | } |
|
|
981 | |
|
|
982 | #endif |
|
|
983 | |
|
|
984 | #if EV_MULTIPLICITY |
|
|
985 | struct ev_loop * |
|
|
986 | ev_default_loop_init (unsigned int flags) |
|
|
987 | #else |
|
|
988 | int |
|
|
989 | ev_default_loop (unsigned int flags) |
|
|
990 | #endif |
|
|
991 | { |
|
|
992 | if (sigpipe [0] == sigpipe [1]) |
408 | if (pipe (sigpipe)) |
993 | if (pipe (sigpipe)) |
409 | return 0; |
994 | return 0; |
410 | |
995 | |
411 | ev_method = EVMETHOD_NONE; |
996 | if (!ev_default_loop_ptr) |
412 | #if HAVE_EPOLL |
997 | { |
413 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
998 | #if EV_MULTIPLICITY |
|
|
999 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
|
|
1000 | #else |
|
|
1001 | ev_default_loop_ptr = 1; |
414 | #endif |
1002 | #endif |
415 | #if HAVE_SELECT |
|
|
416 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
417 | #endif |
|
|
418 | |
1003 | |
419 | if (ev_method) |
1004 | loop_init (EV_A_ flags); |
|
|
1005 | |
|
|
1006 | if (ev_backend (EV_A)) |
420 | { |
1007 | { |
421 | evw_init (&sigev, sigcb); |
|
|
422 | siginit (); |
1008 | siginit (EV_A); |
423 | |
1009 | |
|
|
1010 | #ifndef _WIN32 |
424 | evsignal_init (&childev, childcb, SIGCHLD); |
1011 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
1012 | ev_set_priority (&childev, EV_MAXPRI); |
425 | evsignal_start (&childev); |
1013 | ev_signal_start (EV_A_ &childev); |
|
|
1014 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
1015 | #endif |
426 | } |
1016 | } |
|
|
1017 | else |
|
|
1018 | ev_default_loop_ptr = 0; |
427 | } |
1019 | } |
428 | |
1020 | |
429 | return ev_method; |
1021 | return ev_default_loop_ptr; |
|
|
1022 | } |
|
|
1023 | |
|
|
1024 | void |
|
|
1025 | ev_default_destroy (void) |
|
|
1026 | { |
|
|
1027 | #if EV_MULTIPLICITY |
|
|
1028 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1029 | #endif |
|
|
1030 | |
|
|
1031 | #ifndef _WIN32 |
|
|
1032 | ev_ref (EV_A); /* child watcher */ |
|
|
1033 | ev_signal_stop (EV_A_ &childev); |
|
|
1034 | #endif |
|
|
1035 | |
|
|
1036 | ev_ref (EV_A); /* signal watcher */ |
|
|
1037 | ev_io_stop (EV_A_ &sigev); |
|
|
1038 | |
|
|
1039 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
1040 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
1041 | |
|
|
1042 | loop_destroy (EV_A); |
|
|
1043 | } |
|
|
1044 | |
|
|
1045 | void |
|
|
1046 | ev_default_fork (void) |
|
|
1047 | { |
|
|
1048 | #if EV_MULTIPLICITY |
|
|
1049 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1050 | #endif |
|
|
1051 | |
|
|
1052 | if (backend) |
|
|
1053 | postfork = 1; |
430 | } |
1054 | } |
431 | |
1055 | |
432 | /*****************************************************************************/ |
1056 | /*****************************************************************************/ |
433 | |
1057 | |
434 | void |
|
|
435 | ev_prefork (void) |
|
|
436 | { |
|
|
437 | /* nop */ |
|
|
438 | } |
|
|
439 | |
|
|
440 | void |
|
|
441 | ev_postfork_parent (void) |
|
|
442 | { |
|
|
443 | /* nop */ |
|
|
444 | } |
|
|
445 | |
|
|
446 | void |
|
|
447 | ev_postfork_child (void) |
|
|
448 | { |
|
|
449 | #if HAVE_EPOLL |
|
|
450 | if (ev_method == EVMETHOD_EPOLL) |
|
|
451 | epoll_postfork_child (); |
|
|
452 | #endif |
|
|
453 | |
|
|
454 | evio_stop (&sigev); |
|
|
455 | close (sigpipe [0]); |
|
|
456 | close (sigpipe [1]); |
|
|
457 | pipe (sigpipe); |
|
|
458 | siginit (); |
|
|
459 | } |
|
|
460 | |
|
|
461 | /*****************************************************************************/ |
|
|
462 | |
|
|
463 | static void |
1058 | static int |
464 | fd_reify (void) |
1059 | any_pending (EV_P) |
465 | { |
1060 | { |
466 | int i; |
1061 | int pri; |
467 | |
1062 | |
468 | for (i = 0; i < fdchangecnt; ++i) |
1063 | for (pri = NUMPRI; pri--; ) |
|
|
1064 | if (pendingcnt [pri]) |
|
|
1065 | return 1; |
|
|
1066 | |
|
|
1067 | return 0; |
|
|
1068 | } |
|
|
1069 | |
|
|
1070 | inline void |
|
|
1071 | call_pending (EV_P) |
|
|
1072 | { |
|
|
1073 | int pri; |
|
|
1074 | |
|
|
1075 | for (pri = NUMPRI; pri--; ) |
|
|
1076 | while (pendingcnt [pri]) |
469 | { |
1077 | { |
470 | int fd = fdchanges [i]; |
1078 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
471 | ANFD *anfd = anfds + fd; |
|
|
472 | struct ev_io *w; |
|
|
473 | |
1079 | |
474 | int wev = 0; |
1080 | if (expect_true (p->w)) |
475 | |
|
|
476 | for (w = anfd->head; w; w = w->next) |
|
|
477 | wev |= w->events; |
|
|
478 | |
|
|
479 | if (anfd->wev != wev) |
|
|
480 | { |
1081 | { |
481 | method_modify (fd, anfd->wev, wev); |
|
|
482 | anfd->wev = wev; |
|
|
483 | } |
|
|
484 | } |
|
|
485 | |
|
|
486 | fdchangecnt = 0; |
|
|
487 | } |
|
|
488 | |
|
|
489 | static void |
|
|
490 | call_pending (void) |
|
|
491 | { |
|
|
492 | while (pendingcnt) |
|
|
493 | { |
|
|
494 | ANPENDING *p = pendings + --pendingcnt; |
|
|
495 | |
|
|
496 | if (p->w) |
|
|
497 | { |
|
|
498 | p->w->pending = 0; |
1082 | p->w->pending = 0; |
499 | p->w->cb (p->w, p->events); |
1083 | EV_CB_INVOKE (p->w, p->events); |
500 | } |
1084 | } |
501 | } |
1085 | } |
502 | } |
1086 | } |
503 | |
1087 | |
504 | static void |
1088 | inline void |
505 | timers_reify (void) |
1089 | timers_reify (EV_P) |
506 | { |
1090 | { |
507 | while (timercnt && timers [0]->at <= now) |
1091 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
508 | { |
1092 | { |
509 | struct ev_timer *w = timers [0]; |
1093 | struct ev_timer *w = timers [0]; |
510 | |
1094 | |
511 | event ((W)w, EV_TIMEOUT); |
1095 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
512 | |
1096 | |
513 | /* first reschedule or stop timer */ |
1097 | /* first reschedule or stop timer */ |
514 | if (w->repeat) |
1098 | if (w->repeat) |
515 | { |
1099 | { |
|
|
1100 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
1101 | |
516 | w->at = now + w->repeat; |
1102 | ((WT)w)->at += w->repeat; |
517 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
1103 | if (((WT)w)->at < mn_now) |
|
|
1104 | ((WT)w)->at = mn_now; |
|
|
1105 | |
518 | downheap ((WT *)timers, timercnt, 0); |
1106 | downheap ((WT *)timers, timercnt, 0); |
519 | } |
1107 | } |
520 | else |
1108 | else |
521 | evtimer_stop (w); /* nonrepeating: stop timer */ |
1109 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
522 | } |
|
|
523 | } |
|
|
524 | |
1110 | |
525 | static void |
1111 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
1112 | } |
|
|
1113 | } |
|
|
1114 | |
|
|
1115 | #if EV_PERIODICS |
|
|
1116 | inline void |
526 | periodics_reify (void) |
1117 | periodics_reify (EV_P) |
527 | { |
1118 | { |
528 | while (periodiccnt && periodics [0]->at <= ev_now) |
1119 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
529 | { |
1120 | { |
530 | struct ev_periodic *w = periodics [0]; |
1121 | struct ev_periodic *w = periodics [0]; |
531 | |
1122 | |
|
|
1123 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
|
|
1124 | |
532 | /* first reschedule or stop timer */ |
1125 | /* first reschedule or stop timer */ |
533 | if (w->interval) |
1126 | if (w->reschedule_cb) |
534 | { |
1127 | { |
|
|
1128 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); |
|
|
1129 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
|
|
1130 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1131 | } |
|
|
1132 | else if (w->interval) |
|
|
1133 | { |
535 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
1134 | ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
536 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
1135 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
537 | downheap ((WT *)periodics, periodiccnt, 0); |
1136 | downheap ((WT *)periodics, periodiccnt, 0); |
538 | } |
1137 | } |
539 | else |
1138 | else |
540 | evperiodic_stop (w); /* nonrepeating: stop timer */ |
1139 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
541 | |
1140 | |
542 | event ((W)w, EV_TIMEOUT); |
1141 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
543 | } |
1142 | } |
544 | } |
1143 | } |
545 | |
1144 | |
546 | static void |
1145 | static void |
547 | periodics_reschedule (ev_tstamp diff) |
1146 | periodics_reschedule (EV_P) |
548 | { |
1147 | { |
549 | int i; |
1148 | int i; |
550 | |
1149 | |
551 | /* adjust periodics after time jump */ |
1150 | /* adjust periodics after time jump */ |
552 | for (i = 0; i < periodiccnt; ++i) |
1151 | for (i = 0; i < periodiccnt; ++i) |
553 | { |
1152 | { |
554 | struct ev_periodic *w = periodics [i]; |
1153 | struct ev_periodic *w = periodics [i]; |
555 | |
1154 | |
|
|
1155 | if (w->reschedule_cb) |
|
|
1156 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
556 | if (w->interval) |
1157 | else if (w->interval) |
|
|
1158 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1159 | } |
|
|
1160 | |
|
|
1161 | /* now rebuild the heap */ |
|
|
1162 | for (i = periodiccnt >> 1; i--; ) |
|
|
1163 | downheap ((WT *)periodics, periodiccnt, i); |
|
|
1164 | } |
|
|
1165 | #endif |
|
|
1166 | |
|
|
1167 | inline int |
|
|
1168 | time_update_monotonic (EV_P) |
|
|
1169 | { |
|
|
1170 | mn_now = get_clock (); |
|
|
1171 | |
|
|
1172 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
1173 | { |
|
|
1174 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1175 | return 0; |
|
|
1176 | } |
|
|
1177 | else |
|
|
1178 | { |
|
|
1179 | now_floor = mn_now; |
|
|
1180 | ev_rt_now = ev_time (); |
|
|
1181 | return 1; |
|
|
1182 | } |
|
|
1183 | } |
|
|
1184 | |
|
|
1185 | inline void |
|
|
1186 | time_update (EV_P) |
|
|
1187 | { |
|
|
1188 | int i; |
|
|
1189 | |
|
|
1190 | #if EV_USE_MONOTONIC |
|
|
1191 | if (expect_true (have_monotonic)) |
|
|
1192 | { |
|
|
1193 | if (time_update_monotonic (EV_A)) |
557 | { |
1194 | { |
558 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
1195 | ev_tstamp odiff = rtmn_diff; |
559 | |
1196 | |
560 | if (fabs (diff) >= 1e-4) |
1197 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
561 | { |
1198 | { |
562 | evperiodic_stop (w); |
1199 | rtmn_diff = ev_rt_now - mn_now; |
563 | evperiodic_start (w); |
|
|
564 | |
1200 | |
565 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
1201 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
|
|
1202 | return; /* all is well */ |
|
|
1203 | |
|
|
1204 | ev_rt_now = ev_time (); |
|
|
1205 | mn_now = get_clock (); |
|
|
1206 | now_floor = mn_now; |
566 | } |
1207 | } |
|
|
1208 | |
|
|
1209 | # if EV_PERIODICS |
|
|
1210 | periodics_reschedule (EV_A); |
|
|
1211 | # endif |
|
|
1212 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1213 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
567 | } |
1214 | } |
568 | } |
1215 | } |
569 | } |
1216 | else |
570 | |
1217 | #endif |
571 | static void |
1218 | { |
572 | time_update (void) |
|
|
573 | { |
|
|
574 | int i; |
|
|
575 | |
|
|
576 | ev_now = ev_time (); |
1219 | ev_rt_now = ev_time (); |
577 | |
1220 | |
578 | if (have_monotonic) |
1221 | if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
579 | { |
|
|
580 | ev_tstamp odiff = diff; |
|
|
581 | |
|
|
582 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
583 | { |
1222 | { |
584 | now = get_clock (); |
1223 | #if EV_PERIODICS |
585 | diff = ev_now - now; |
|
|
586 | |
|
|
587 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
|
|
588 | return; /* all is well */ |
|
|
589 | |
|
|
590 | ev_now = ev_time (); |
|
|
591 | } |
|
|
592 | |
|
|
593 | periodics_reschedule (diff - odiff); |
|
|
594 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
595 | } |
|
|
596 | else |
|
|
597 | { |
|
|
598 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
|
|
599 | { |
|
|
600 | periodics_reschedule (ev_now - now); |
1224 | periodics_reschedule (EV_A); |
|
|
1225 | #endif |
601 | |
1226 | |
602 | /* adjust timers. this is easy, as the offset is the same for all */ |
1227 | /* adjust timers. this is easy, as the offset is the same for all */ |
603 | for (i = 0; i < timercnt; ++i) |
1228 | for (i = 0; i < timercnt; ++i) |
604 | timers [i]->at += diff; |
1229 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
605 | } |
1230 | } |
606 | |
1231 | |
607 | now = ev_now; |
1232 | mn_now = ev_rt_now; |
608 | } |
1233 | } |
609 | } |
1234 | } |
610 | |
1235 | |
611 | int ev_loop_done; |
1236 | void |
|
|
1237 | ev_ref (EV_P) |
|
|
1238 | { |
|
|
1239 | ++activecnt; |
|
|
1240 | } |
612 | |
1241 | |
|
|
1242 | void |
|
|
1243 | ev_unref (EV_P) |
|
|
1244 | { |
|
|
1245 | --activecnt; |
|
|
1246 | } |
|
|
1247 | |
|
|
1248 | static int loop_done; |
|
|
1249 | |
|
|
1250 | void |
613 | void ev_loop (int flags) |
1251 | ev_loop (EV_P_ int flags) |
614 | { |
1252 | { |
615 | double block; |
1253 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) |
616 | ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0; |
1254 | ? EVUNLOOP_ONE |
|
|
1255 | : EVUNLOOP_CANCEL; |
617 | |
1256 | |
618 | do |
1257 | while (activecnt) |
619 | { |
1258 | { |
620 | /* queue check watchers (and execute them) */ |
1259 | /* queue check watchers (and execute them) */ |
621 | if (preparecnt) |
1260 | if (expect_false (preparecnt)) |
622 | { |
1261 | { |
623 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
1262 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
624 | call_pending (); |
1263 | call_pending (EV_A); |
625 | } |
1264 | } |
626 | |
1265 | |
|
|
1266 | /* we might have forked, so reify kernel state if necessary */ |
|
|
1267 | if (expect_false (postfork)) |
|
|
1268 | loop_fork (EV_A); |
|
|
1269 | |
627 | /* update fd-related kernel structures */ |
1270 | /* update fd-related kernel structures */ |
628 | fd_reify (); |
1271 | fd_reify (EV_A); |
629 | |
1272 | |
630 | /* calculate blocking time */ |
1273 | /* calculate blocking time */ |
|
|
1274 | { |
|
|
1275 | double block; |
631 | |
1276 | |
632 | /* we only need this for !monotonic clockor timers, but as we basically |
|
|
633 | always have timers, we just calculate it always */ |
|
|
634 | ev_now = ev_time (); |
|
|
635 | |
|
|
636 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
1277 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
637 | block = 0.; |
1278 | block = 0.; /* do not block at all */ |
638 | else |
1279 | else |
639 | { |
1280 | { |
|
|
1281 | /* update time to cancel out callback processing overhead */ |
|
|
1282 | #if EV_USE_MONOTONIC |
|
|
1283 | if (expect_true (have_monotonic)) |
|
|
1284 | time_update_monotonic (EV_A); |
|
|
1285 | else |
|
|
1286 | #endif |
|
|
1287 | { |
|
|
1288 | ev_rt_now = ev_time (); |
|
|
1289 | mn_now = ev_rt_now; |
|
|
1290 | } |
|
|
1291 | |
640 | block = MAX_BLOCKTIME; |
1292 | block = MAX_BLOCKTIME; |
641 | |
1293 | |
642 | if (timercnt) |
1294 | if (timercnt) |
643 | { |
1295 | { |
644 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
1296 | ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; |
645 | if (block > to) block = to; |
1297 | if (block > to) block = to; |
646 | } |
1298 | } |
647 | |
1299 | |
|
|
1300 | #if EV_PERIODICS |
648 | if (periodiccnt) |
1301 | if (periodiccnt) |
649 | { |
1302 | { |
650 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
1303 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; |
651 | if (block > to) block = to; |
1304 | if (block > to) block = to; |
652 | } |
1305 | } |
|
|
1306 | #endif |
653 | |
1307 | |
654 | if (block < 0.) block = 0.; |
1308 | if (expect_false (block < 0.)) block = 0.; |
655 | } |
1309 | } |
656 | |
1310 | |
657 | method_poll (block); |
1311 | backend_poll (EV_A_ block); |
|
|
1312 | } |
658 | |
1313 | |
659 | /* update ev_now, do magic */ |
1314 | /* update ev_rt_now, do magic */ |
660 | time_update (); |
1315 | time_update (EV_A); |
661 | |
1316 | |
662 | /* queue pending timers and reschedule them */ |
1317 | /* queue pending timers and reschedule them */ |
663 | timers_reify (); /* relative timers called last */ |
1318 | timers_reify (EV_A); /* relative timers called last */ |
|
|
1319 | #if EV_PERIODICS |
664 | periodics_reify (); /* absolute timers called first */ |
1320 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
1321 | #endif |
665 | |
1322 | |
666 | /* queue idle watchers unless io or timers are pending */ |
1323 | /* queue idle watchers unless io or timers are pending */ |
667 | if (!pendingcnt) |
1324 | if (idlecnt && !any_pending (EV_A)) |
668 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
1325 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
669 | |
1326 | |
670 | /* queue check watchers, to be executed first */ |
1327 | /* queue check watchers, to be executed first */ |
671 | if (checkcnt) |
1328 | if (expect_false (checkcnt)) |
672 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1329 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
673 | |
1330 | |
674 | call_pending (); |
1331 | call_pending (EV_A); |
675 | } |
|
|
676 | while (!ev_loop_done); |
|
|
677 | |
1332 | |
678 | if (ev_loop_done != 2) |
1333 | if (expect_false (loop_done)) |
|
|
1334 | break; |
|
|
1335 | } |
|
|
1336 | |
|
|
1337 | if (loop_done == EVUNLOOP_ONE) |
|
|
1338 | loop_done = EVUNLOOP_CANCEL; |
|
|
1339 | } |
|
|
1340 | |
|
|
1341 | void |
|
|
1342 | ev_unloop (EV_P_ int how) |
|
|
1343 | { |
679 | ev_loop_done = 0; |
1344 | loop_done = how; |
680 | } |
1345 | } |
681 | |
1346 | |
682 | /*****************************************************************************/ |
1347 | /*****************************************************************************/ |
683 | |
1348 | |
684 | static void |
1349 | inline void |
685 | wlist_add (WL *head, WL elem) |
1350 | wlist_add (WL *head, WL elem) |
686 | { |
1351 | { |
687 | elem->next = *head; |
1352 | elem->next = *head; |
688 | *head = elem; |
1353 | *head = elem; |
689 | } |
1354 | } |
690 | |
1355 | |
691 | static void |
1356 | inline void |
692 | wlist_del (WL *head, WL elem) |
1357 | wlist_del (WL *head, WL elem) |
693 | { |
1358 | { |
694 | while (*head) |
1359 | while (*head) |
695 | { |
1360 | { |
696 | if (*head == elem) |
1361 | if (*head == elem) |
… | |
… | |
701 | |
1366 | |
702 | head = &(*head)->next; |
1367 | head = &(*head)->next; |
703 | } |
1368 | } |
704 | } |
1369 | } |
705 | |
1370 | |
706 | static void |
1371 | inline void |
707 | ev_clear (W w) |
1372 | ev_clear_pending (EV_P_ W w) |
708 | { |
1373 | { |
709 | if (w->pending) |
1374 | if (w->pending) |
710 | { |
1375 | { |
711 | pendings [w->pending - 1].w = 0; |
1376 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
712 | w->pending = 0; |
1377 | w->pending = 0; |
713 | } |
1378 | } |
714 | } |
1379 | } |
715 | |
1380 | |
716 | static void |
1381 | inline void |
717 | ev_start (W w, int active) |
1382 | ev_start (EV_P_ W w, int active) |
718 | { |
1383 | { |
|
|
1384 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1385 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1386 | |
719 | w->active = active; |
1387 | w->active = active; |
|
|
1388 | ev_ref (EV_A); |
720 | } |
1389 | } |
721 | |
1390 | |
722 | static void |
1391 | inline void |
723 | ev_stop (W w) |
1392 | ev_stop (EV_P_ W w) |
724 | { |
1393 | { |
|
|
1394 | ev_unref (EV_A); |
725 | w->active = 0; |
1395 | w->active = 0; |
726 | } |
1396 | } |
727 | |
1397 | |
728 | /*****************************************************************************/ |
1398 | /*****************************************************************************/ |
729 | |
1399 | |
730 | void |
1400 | void |
731 | evio_start (struct ev_io *w) |
1401 | ev_io_start (EV_P_ struct ev_io *w) |
732 | { |
1402 | { |
733 | if (ev_is_active (w)) |
|
|
734 | return; |
|
|
735 | |
|
|
736 | int fd = w->fd; |
1403 | int fd = w->fd; |
737 | |
1404 | |
|
|
1405 | if (expect_false (ev_is_active (w))) |
|
|
1406 | return; |
|
|
1407 | |
|
|
1408 | assert (("ev_io_start called with negative fd", fd >= 0)); |
|
|
1409 | |
738 | ev_start ((W)w, 1); |
1410 | ev_start (EV_A_ (W)w, 1); |
739 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1411 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
740 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1412 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
741 | |
1413 | |
742 | ++fdchangecnt; |
1414 | fd_change (EV_A_ fd); |
743 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
744 | fdchanges [fdchangecnt - 1] = fd; |
|
|
745 | } |
1415 | } |
746 | |
1416 | |
747 | void |
1417 | void |
748 | evio_stop (struct ev_io *w) |
1418 | ev_io_stop (EV_P_ struct ev_io *w) |
749 | { |
1419 | { |
750 | ev_clear ((W)w); |
1420 | ev_clear_pending (EV_A_ (W)w); |
751 | if (!ev_is_active (w)) |
1421 | if (expect_false (!ev_is_active (w))) |
752 | return; |
1422 | return; |
|
|
1423 | |
|
|
1424 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
753 | |
1425 | |
754 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1426 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
755 | ev_stop ((W)w); |
1427 | ev_stop (EV_A_ (W)w); |
756 | |
1428 | |
757 | ++fdchangecnt; |
1429 | fd_change (EV_A_ w->fd); |
758 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
759 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
760 | } |
1430 | } |
761 | |
1431 | |
762 | void |
1432 | void |
763 | evtimer_start (struct ev_timer *w) |
1433 | ev_timer_start (EV_P_ struct ev_timer *w) |
764 | { |
1434 | { |
765 | if (ev_is_active (w)) |
1435 | if (expect_false (ev_is_active (w))) |
766 | return; |
1436 | return; |
767 | |
1437 | |
768 | w->at += now; |
1438 | ((WT)w)->at += mn_now; |
769 | |
1439 | |
770 | assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); |
1440 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
771 | |
1441 | |
772 | ev_start ((W)w, ++timercnt); |
1442 | ev_start (EV_A_ (W)w, ++timercnt); |
773 | array_needsize (timers, timermax, timercnt, ); |
1443 | array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2); |
774 | timers [timercnt - 1] = w; |
1444 | timers [timercnt - 1] = w; |
775 | upheap ((WT *)timers, timercnt - 1); |
1445 | upheap ((WT *)timers, timercnt - 1); |
776 | } |
|
|
777 | |
1446 | |
|
|
1447 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1448 | } |
|
|
1449 | |
778 | void |
1450 | void |
779 | evtimer_stop (struct ev_timer *w) |
1451 | ev_timer_stop (EV_P_ struct ev_timer *w) |
780 | { |
1452 | { |
781 | ev_clear ((W)w); |
1453 | ev_clear_pending (EV_A_ (W)w); |
782 | if (!ev_is_active (w)) |
1454 | if (expect_false (!ev_is_active (w))) |
783 | return; |
1455 | return; |
784 | |
1456 | |
|
|
1457 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1458 | |
785 | if (w->active < timercnt--) |
1459 | if (expect_true (((W)w)->active < timercnt--)) |
786 | { |
1460 | { |
787 | timers [w->active - 1] = timers [timercnt]; |
1461 | timers [((W)w)->active - 1] = timers [timercnt]; |
788 | downheap ((WT *)timers, timercnt, w->active - 1); |
1462 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
789 | } |
1463 | } |
790 | |
1464 | |
791 | w->at = w->repeat; |
1465 | ((WT)w)->at -= mn_now; |
792 | |
1466 | |
793 | ev_stop ((W)w); |
1467 | ev_stop (EV_A_ (W)w); |
794 | } |
1468 | } |
795 | |
1469 | |
796 | void |
1470 | void |
797 | evtimer_again (struct ev_timer *w) |
1471 | ev_timer_again (EV_P_ struct ev_timer *w) |
798 | { |
1472 | { |
799 | if (ev_is_active (w)) |
1473 | if (ev_is_active (w)) |
800 | { |
1474 | { |
801 | if (w->repeat) |
1475 | if (w->repeat) |
802 | { |
1476 | { |
803 | w->at = now + w->repeat; |
1477 | ((WT)w)->at = mn_now + w->repeat; |
804 | downheap ((WT *)timers, timercnt, w->active - 1); |
1478 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
805 | } |
1479 | } |
806 | else |
1480 | else |
807 | evtimer_stop (w); |
1481 | ev_timer_stop (EV_A_ w); |
808 | } |
1482 | } |
809 | else if (w->repeat) |
1483 | else if (w->repeat) |
|
|
1484 | { |
|
|
1485 | w->at = w->repeat; |
810 | evtimer_start (w); |
1486 | ev_timer_start (EV_A_ w); |
|
|
1487 | } |
811 | } |
1488 | } |
812 | |
1489 | |
|
|
1490 | #if EV_PERIODICS |
813 | void |
1491 | void |
814 | evperiodic_start (struct ev_periodic *w) |
1492 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
815 | { |
1493 | { |
816 | if (ev_is_active (w)) |
1494 | if (expect_false (ev_is_active (w))) |
817 | return; |
1495 | return; |
818 | |
1496 | |
819 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
1497 | if (w->reschedule_cb) |
820 | |
1498 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1499 | else if (w->interval) |
|
|
1500 | { |
|
|
1501 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
821 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1502 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
822 | if (w->interval) |
|
|
823 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
1503 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1504 | } |
824 | |
1505 | |
825 | ev_start ((W)w, ++periodiccnt); |
1506 | ev_start (EV_A_ (W)w, ++periodiccnt); |
826 | array_needsize (periodics, periodicmax, periodiccnt, ); |
1507 | array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); |
827 | periodics [periodiccnt - 1] = w; |
1508 | periodics [periodiccnt - 1] = w; |
828 | upheap ((WT *)periodics, periodiccnt - 1); |
1509 | upheap ((WT *)periodics, periodiccnt - 1); |
829 | } |
|
|
830 | |
1510 | |
|
|
1511 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1512 | } |
|
|
1513 | |
831 | void |
1514 | void |
832 | evperiodic_stop (struct ev_periodic *w) |
1515 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
833 | { |
1516 | { |
834 | ev_clear ((W)w); |
1517 | ev_clear_pending (EV_A_ (W)w); |
835 | if (!ev_is_active (w)) |
1518 | if (expect_false (!ev_is_active (w))) |
836 | return; |
1519 | return; |
837 | |
1520 | |
|
|
1521 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1522 | |
838 | if (w->active < periodiccnt--) |
1523 | if (expect_true (((W)w)->active < periodiccnt--)) |
839 | { |
1524 | { |
840 | periodics [w->active - 1] = periodics [periodiccnt]; |
1525 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
841 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
1526 | adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
842 | } |
1527 | } |
843 | |
1528 | |
844 | ev_stop ((W)w); |
1529 | ev_stop (EV_A_ (W)w); |
845 | } |
1530 | } |
846 | |
1531 | |
847 | void |
1532 | void |
|
|
1533 | ev_periodic_again (EV_P_ struct ev_periodic *w) |
|
|
1534 | { |
|
|
1535 | /* TODO: use adjustheap and recalculation */ |
|
|
1536 | ev_periodic_stop (EV_A_ w); |
|
|
1537 | ev_periodic_start (EV_A_ w); |
|
|
1538 | } |
|
|
1539 | #endif |
|
|
1540 | |
|
|
1541 | void |
|
|
1542 | ev_idle_start (EV_P_ struct ev_idle *w) |
|
|
1543 | { |
|
|
1544 | if (expect_false (ev_is_active (w))) |
|
|
1545 | return; |
|
|
1546 | |
|
|
1547 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1548 | array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2); |
|
|
1549 | idles [idlecnt - 1] = w; |
|
|
1550 | } |
|
|
1551 | |
|
|
1552 | void |
|
|
1553 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1554 | { |
|
|
1555 | ev_clear_pending (EV_A_ (W)w); |
|
|
1556 | if (expect_false (!ev_is_active (w))) |
|
|
1557 | return; |
|
|
1558 | |
|
|
1559 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
|
|
1560 | ev_stop (EV_A_ (W)w); |
|
|
1561 | } |
|
|
1562 | |
|
|
1563 | void |
|
|
1564 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1565 | { |
|
|
1566 | if (expect_false (ev_is_active (w))) |
|
|
1567 | return; |
|
|
1568 | |
|
|
1569 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1570 | array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
|
|
1571 | prepares [preparecnt - 1] = w; |
|
|
1572 | } |
|
|
1573 | |
|
|
1574 | void |
|
|
1575 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1576 | { |
|
|
1577 | ev_clear_pending (EV_A_ (W)w); |
|
|
1578 | if (expect_false (!ev_is_active (w))) |
|
|
1579 | return; |
|
|
1580 | |
|
|
1581 | prepares [((W)w)->active - 1] = prepares [--preparecnt]; |
|
|
1582 | ev_stop (EV_A_ (W)w); |
|
|
1583 | } |
|
|
1584 | |
|
|
1585 | void |
|
|
1586 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1587 | { |
|
|
1588 | if (expect_false (ev_is_active (w))) |
|
|
1589 | return; |
|
|
1590 | |
|
|
1591 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1592 | array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
1593 | checks [checkcnt - 1] = w; |
|
|
1594 | } |
|
|
1595 | |
|
|
1596 | void |
|
|
1597 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1598 | { |
|
|
1599 | ev_clear_pending (EV_A_ (W)w); |
|
|
1600 | if (expect_false (!ev_is_active (w))) |
|
|
1601 | return; |
|
|
1602 | |
|
|
1603 | checks [((W)w)->active - 1] = checks [--checkcnt]; |
|
|
1604 | ev_stop (EV_A_ (W)w); |
|
|
1605 | } |
|
|
1606 | |
|
|
1607 | #ifndef SA_RESTART |
|
|
1608 | # define SA_RESTART 0 |
|
|
1609 | #endif |
|
|
1610 | |
|
|
1611 | void |
848 | evsignal_start (struct ev_signal *w) |
1612 | ev_signal_start (EV_P_ struct ev_signal *w) |
849 | { |
1613 | { |
|
|
1614 | #if EV_MULTIPLICITY |
|
|
1615 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1616 | #endif |
850 | if (ev_is_active (w)) |
1617 | if (expect_false (ev_is_active (w))) |
851 | return; |
1618 | return; |
852 | |
1619 | |
|
|
1620 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1621 | |
853 | ev_start ((W)w, 1); |
1622 | ev_start (EV_A_ (W)w, 1); |
854 | array_needsize (signals, signalmax, w->signum, signals_init); |
1623 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
855 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1624 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
856 | |
1625 | |
857 | if (!w->next) |
1626 | if (!((WL)w)->next) |
858 | { |
1627 | { |
|
|
1628 | #if _WIN32 |
|
|
1629 | signal (w->signum, sighandler); |
|
|
1630 | #else |
859 | struct sigaction sa; |
1631 | struct sigaction sa; |
860 | sa.sa_handler = sighandler; |
1632 | sa.sa_handler = sighandler; |
861 | sigfillset (&sa.sa_mask); |
1633 | sigfillset (&sa.sa_mask); |
862 | sa.sa_flags = 0; |
1634 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
863 | sigaction (w->signum, &sa, 0); |
1635 | sigaction (w->signum, &sa, 0); |
|
|
1636 | #endif |
864 | } |
1637 | } |
865 | } |
1638 | } |
866 | |
1639 | |
867 | void |
1640 | void |
868 | evsignal_stop (struct ev_signal *w) |
1641 | ev_signal_stop (EV_P_ struct ev_signal *w) |
869 | { |
1642 | { |
870 | ev_clear ((W)w); |
1643 | ev_clear_pending (EV_A_ (W)w); |
871 | if (!ev_is_active (w)) |
1644 | if (expect_false (!ev_is_active (w))) |
872 | return; |
1645 | return; |
873 | |
1646 | |
874 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1647 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
875 | ev_stop ((W)w); |
1648 | ev_stop (EV_A_ (W)w); |
876 | |
1649 | |
877 | if (!signals [w->signum - 1].head) |
1650 | if (!signals [w->signum - 1].head) |
878 | signal (w->signum, SIG_DFL); |
1651 | signal (w->signum, SIG_DFL); |
879 | } |
1652 | } |
880 | |
1653 | |
881 | void evidle_start (struct ev_idle *w) |
1654 | void |
882 | { |
|
|
883 | if (ev_is_active (w)) |
|
|
884 | return; |
|
|
885 | |
|
|
886 | ev_start ((W)w, ++idlecnt); |
|
|
887 | array_needsize (idles, idlemax, idlecnt, ); |
|
|
888 | idles [idlecnt - 1] = w; |
|
|
889 | } |
|
|
890 | |
|
|
891 | void evidle_stop (struct ev_idle *w) |
|
|
892 | { |
|
|
893 | ev_clear ((W)w); |
|
|
894 | if (ev_is_active (w)) |
|
|
895 | return; |
|
|
896 | |
|
|
897 | idles [w->active - 1] = idles [--idlecnt]; |
|
|
898 | ev_stop ((W)w); |
|
|
899 | } |
|
|
900 | |
|
|
901 | void evprepare_start (struct ev_prepare *w) |
|
|
902 | { |
|
|
903 | if (ev_is_active (w)) |
|
|
904 | return; |
|
|
905 | |
|
|
906 | ev_start ((W)w, ++preparecnt); |
|
|
907 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
908 | prepares [preparecnt - 1] = w; |
|
|
909 | } |
|
|
910 | |
|
|
911 | void evprepare_stop (struct ev_prepare *w) |
|
|
912 | { |
|
|
913 | ev_clear ((W)w); |
|
|
914 | if (ev_is_active (w)) |
|
|
915 | return; |
|
|
916 | |
|
|
917 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
918 | ev_stop ((W)w); |
|
|
919 | } |
|
|
920 | |
|
|
921 | void evcheck_start (struct ev_check *w) |
|
|
922 | { |
|
|
923 | if (ev_is_active (w)) |
|
|
924 | return; |
|
|
925 | |
|
|
926 | ev_start ((W)w, ++checkcnt); |
|
|
927 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
928 | checks [checkcnt - 1] = w; |
|
|
929 | } |
|
|
930 | |
|
|
931 | void evcheck_stop (struct ev_check *w) |
|
|
932 | { |
|
|
933 | ev_clear ((W)w); |
|
|
934 | if (ev_is_active (w)) |
|
|
935 | return; |
|
|
936 | |
|
|
937 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
938 | ev_stop ((W)w); |
|
|
939 | } |
|
|
940 | |
|
|
941 | void evchild_start (struct ev_child *w) |
1655 | ev_child_start (EV_P_ struct ev_child *w) |
942 | { |
1656 | { |
|
|
1657 | #if EV_MULTIPLICITY |
|
|
1658 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1659 | #endif |
943 | if (ev_is_active (w)) |
1660 | if (expect_false (ev_is_active (w))) |
944 | return; |
1661 | return; |
945 | |
1662 | |
946 | ev_start ((W)w, 1); |
1663 | ev_start (EV_A_ (W)w, 1); |
947 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
1664 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
948 | } |
1665 | } |
949 | |
1666 | |
|
|
1667 | void |
950 | void evchild_stop (struct ev_child *w) |
1668 | ev_child_stop (EV_P_ struct ev_child *w) |
951 | { |
1669 | { |
952 | ev_clear ((W)w); |
1670 | ev_clear_pending (EV_A_ (W)w); |
953 | if (ev_is_active (w)) |
1671 | if (expect_false (!ev_is_active (w))) |
954 | return; |
1672 | return; |
955 | |
1673 | |
956 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
1674 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
957 | ev_stop ((W)w); |
1675 | ev_stop (EV_A_ (W)w); |
958 | } |
1676 | } |
|
|
1677 | |
|
|
1678 | #if EV_MULTIPLICITY |
|
|
1679 | static void |
|
|
1680 | embed_cb (EV_P_ struct ev_io *io, int revents) |
|
|
1681 | { |
|
|
1682 | struct ev_embed *w = (struct ev_embed *)(((char *)io) - offsetof (struct ev_embed, io)); |
|
|
1683 | |
|
|
1684 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
1685 | ev_loop (w->loop, EVLOOP_NONBLOCK); |
|
|
1686 | } |
|
|
1687 | |
|
|
1688 | void |
|
|
1689 | ev_embed_start (EV_P_ struct ev_embed *w) |
|
|
1690 | { |
|
|
1691 | if (expect_false (ev_is_active (w))) |
|
|
1692 | return; |
|
|
1693 | |
|
|
1694 | { |
|
|
1695 | struct ev_loop *loop = w->loop; |
|
|
1696 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
1697 | ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); |
|
|
1698 | } |
|
|
1699 | |
|
|
1700 | ev_io_start (EV_A_ &w->io); |
|
|
1701 | ev_start (EV_A_ (W)w, 1); |
|
|
1702 | } |
|
|
1703 | |
|
|
1704 | void |
|
|
1705 | ev_embed_stop (EV_P_ struct ev_embed *w) |
|
|
1706 | { |
|
|
1707 | ev_clear_pending (EV_A_ (W)w); |
|
|
1708 | if (expect_false (!ev_is_active (w))) |
|
|
1709 | return; |
|
|
1710 | |
|
|
1711 | ev_io_stop (EV_A_ &w->io); |
|
|
1712 | ev_stop (EV_A_ (W)w); |
|
|
1713 | } |
|
|
1714 | #endif |
959 | |
1715 | |
960 | /*****************************************************************************/ |
1716 | /*****************************************************************************/ |
961 | |
1717 | |
962 | struct ev_once |
1718 | struct ev_once |
963 | { |
1719 | { |
… | |
… | |
966 | void (*cb)(int revents, void *arg); |
1722 | void (*cb)(int revents, void *arg); |
967 | void *arg; |
1723 | void *arg; |
968 | }; |
1724 | }; |
969 | |
1725 | |
970 | static void |
1726 | static void |
971 | once_cb (struct ev_once *once, int revents) |
1727 | once_cb (EV_P_ struct ev_once *once, int revents) |
972 | { |
1728 | { |
973 | void (*cb)(int revents, void *arg) = once->cb; |
1729 | void (*cb)(int revents, void *arg) = once->cb; |
974 | void *arg = once->arg; |
1730 | void *arg = once->arg; |
975 | |
1731 | |
976 | evio_stop (&once->io); |
1732 | ev_io_stop (EV_A_ &once->io); |
977 | evtimer_stop (&once->to); |
1733 | ev_timer_stop (EV_A_ &once->to); |
978 | free (once); |
1734 | ev_free (once); |
979 | |
1735 | |
980 | cb (revents, arg); |
1736 | cb (revents, arg); |
981 | } |
1737 | } |
982 | |
1738 | |
983 | static void |
1739 | static void |
984 | once_cb_io (struct ev_io *w, int revents) |
1740 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
985 | { |
1741 | { |
986 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1742 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
987 | } |
1743 | } |
988 | |
1744 | |
989 | static void |
1745 | static void |
990 | once_cb_to (struct ev_timer *w, int revents) |
1746 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
991 | { |
1747 | { |
992 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1748 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
993 | } |
1749 | } |
994 | |
1750 | |
995 | void |
1751 | void |
996 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1752 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
997 | { |
1753 | { |
998 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
1754 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
999 | |
1755 | |
1000 | if (!once) |
1756 | if (expect_false (!once)) |
1001 | cb (EV_ERROR, arg); |
1757 | { |
1002 | else |
1758 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
|
|
1759 | return; |
1003 | { |
1760 | } |
|
|
1761 | |
1004 | once->cb = cb; |
1762 | once->cb = cb; |
1005 | once->arg = arg; |
1763 | once->arg = arg; |
1006 | |
1764 | |
1007 | evw_init (&once->io, once_cb_io); |
1765 | ev_init (&once->io, once_cb_io); |
1008 | |
|
|
1009 | if (fd >= 0) |
1766 | if (fd >= 0) |
1010 | { |
1767 | { |
1011 | evio_set (&once->io, fd, events); |
1768 | ev_io_set (&once->io, fd, events); |
1012 | evio_start (&once->io); |
1769 | ev_io_start (EV_A_ &once->io); |
1013 | } |
1770 | } |
1014 | |
1771 | |
1015 | evw_init (&once->to, once_cb_to); |
1772 | ev_init (&once->to, once_cb_to); |
1016 | |
|
|
1017 | if (timeout >= 0.) |
1773 | if (timeout >= 0.) |
1018 | { |
1774 | { |
1019 | evtimer_set (&once->to, timeout, 0.); |
1775 | ev_timer_set (&once->to, timeout, 0.); |
1020 | evtimer_start (&once->to); |
1776 | ev_timer_start (EV_A_ &once->to); |
1021 | } |
|
|
1022 | } |
|
|
1023 | } |
|
|
1024 | |
|
|
1025 | /*****************************************************************************/ |
|
|
1026 | |
|
|
1027 | #if 0 |
|
|
1028 | |
|
|
1029 | struct ev_io wio; |
|
|
1030 | |
|
|
1031 | static void |
|
|
1032 | sin_cb (struct ev_io *w, int revents) |
|
|
1033 | { |
|
|
1034 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
1035 | } |
|
|
1036 | |
|
|
1037 | static void |
|
|
1038 | ocb (struct ev_timer *w, int revents) |
|
|
1039 | { |
|
|
1040 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
1041 | evtimer_stop (w); |
|
|
1042 | evtimer_start (w); |
|
|
1043 | } |
|
|
1044 | |
|
|
1045 | static void |
|
|
1046 | scb (struct ev_signal *w, int revents) |
|
|
1047 | { |
|
|
1048 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
1049 | evio_stop (&wio); |
|
|
1050 | evio_start (&wio); |
|
|
1051 | } |
|
|
1052 | |
|
|
1053 | static void |
|
|
1054 | gcb (struct ev_signal *w, int revents) |
|
|
1055 | { |
|
|
1056 | fprintf (stderr, "generic %x\n", revents); |
|
|
1057 | |
|
|
1058 | } |
|
|
1059 | |
|
|
1060 | int main (void) |
|
|
1061 | { |
|
|
1062 | ev_init (0); |
|
|
1063 | |
|
|
1064 | evio_init (&wio, sin_cb, 0, EV_READ); |
|
|
1065 | evio_start (&wio); |
|
|
1066 | |
|
|
1067 | struct ev_timer t[10000]; |
|
|
1068 | |
|
|
1069 | #if 0 |
|
|
1070 | int i; |
|
|
1071 | for (i = 0; i < 10000; ++i) |
|
|
1072 | { |
1777 | } |
1073 | struct ev_timer *w = t + i; |
|
|
1074 | evw_init (w, ocb, i); |
|
|
1075 | evtimer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
1076 | evtimer_start (w); |
|
|
1077 | if (drand48 () < 0.5) |
|
|
1078 | evtimer_stop (w); |
|
|
1079 | } |
|
|
1080 | #endif |
|
|
1081 | |
|
|
1082 | struct ev_timer t1; |
|
|
1083 | evtimer_init (&t1, ocb, 5, 10); |
|
|
1084 | evtimer_start (&t1); |
|
|
1085 | |
|
|
1086 | struct ev_signal sig; |
|
|
1087 | evsignal_init (&sig, scb, SIGQUIT); |
|
|
1088 | evsignal_start (&sig); |
|
|
1089 | |
|
|
1090 | struct ev_check cw; |
|
|
1091 | evcheck_init (&cw, gcb); |
|
|
1092 | evcheck_start (&cw); |
|
|
1093 | |
|
|
1094 | struct ev_idle iw; |
|
|
1095 | evidle_init (&iw, gcb); |
|
|
1096 | evidle_start (&iw); |
|
|
1097 | |
|
|
1098 | ev_loop (0); |
|
|
1099 | |
|
|
1100 | return 0; |
|
|
1101 | } |
1778 | } |
1102 | |
1779 | |
|
|
1780 | #ifdef __cplusplus |
|
|
1781 | } |
1103 | #endif |
1782 | #endif |
1104 | |
1783 | |
1105 | |
|
|
1106 | |
|
|
1107 | |
|
|