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 |
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… | |
24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
28 | */ |
30 | */ |
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31 | |
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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 |
29 | #if EV_USE_CONFIG_H |
37 | # ifdef EV_CONFIG_H |
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38 | # include EV_CONFIG_H |
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39 | # else |
30 | # include "config.h" |
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 | |
31 | #endif |
99 | #endif |
32 | |
100 | |
33 | #include <math.h> |
101 | #include <math.h> |
34 | #include <stdlib.h> |
102 | #include <stdlib.h> |
35 | #include <unistd.h> |
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36 | #include <fcntl.h> |
103 | #include <fcntl.h> |
37 | #include <signal.h> |
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38 | #include <stddef.h> |
104 | #include <stddef.h> |
39 | |
105 | |
40 | #include <stdio.h> |
106 | #include <stdio.h> |
41 | |
107 | |
42 | #include <assert.h> |
108 | #include <assert.h> |
43 | #include <errno.h> |
109 | #include <errno.h> |
44 | #include <sys/types.h> |
110 | #include <sys/types.h> |
45 | #include <sys/wait.h> |
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46 | #include <sys/time.h> |
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47 | #include <time.h> |
111 | #include <time.h> |
48 | |
112 | |
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113 | #include <signal.h> |
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114 | |
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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 |
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124 | # endif |
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125 | #endif |
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126 | |
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127 | /**/ |
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128 | |
49 | #ifndef EV_USE_MONOTONIC |
129 | #ifndef EV_USE_MONOTONIC |
50 | # ifdef CLOCK_MONOTONIC |
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51 | # define EV_USE_MONOTONIC 1 |
130 | # define EV_USE_MONOTONIC 0 |
52 | # endif |
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 |
53 | #endif |
135 | #endif |
54 | |
136 | |
55 | #ifndef EV_USE_SELECT |
137 | #ifndef EV_USE_SELECT |
56 | # define EV_USE_SELECT 1 |
138 | # define EV_USE_SELECT 1 |
57 | #endif |
139 | #endif |
58 | |
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 |
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146 | # endif |
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147 | #endif |
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148 | |
59 | #ifndef EV_USE_EPOLL |
149 | #ifndef EV_USE_EPOLL |
60 | # define EV_USE_EPOLL 0 |
150 | # define EV_USE_EPOLL 0 |
61 | #endif |
151 | #endif |
62 | |
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 | |
63 | #ifndef CLOCK_REALTIME |
168 | #ifndef CLOCK_REALTIME |
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169 | # undef EV_USE_REALTIME |
64 | # define EV_USE_REALTIME 0 |
170 | # define EV_USE_REALTIME 0 |
65 | #endif |
171 | #endif |
66 | #ifndef EV_USE_REALTIME |
172 | |
67 | # define EV_USE_REALTIME 1 /* posix requirement, but might be slower */ |
173 | #if EV_SELECT_IS_WINSOCKET |
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174 | # include <winsock.h> |
68 | #endif |
175 | #endif |
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176 | |
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177 | /**/ |
69 | |
178 | |
70 | #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) */ |
71 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detetc time jumps) */ |
180 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
72 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
181 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
73 | #define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ |
182 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ |
74 | |
183 | |
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184 | #ifdef EV_H |
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185 | # include EV_H |
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186 | #else |
75 | #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 */ |
76 | |
206 | |
77 | typedef struct ev_watcher *W; |
207 | typedef struct ev_watcher *W; |
78 | typedef struct ev_watcher_list *WL; |
208 | typedef struct ev_watcher_list *WL; |
79 | typedef struct ev_watcher_time *WT; |
209 | typedef struct ev_watcher_time *WT; |
80 | |
210 | |
81 | 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 | |
82 | ev_tstamp ev_now; |
300 | ev_tstamp ev_rt_now; |
83 | 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 |
84 | |
304 | |
85 | static int have_monotonic; /* runtime */ |
305 | static int ev_default_loop_ptr; |
86 | |
306 | |
87 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
307 | #endif |
88 | static void (*method_modify)(int fd, int oev, int nev); |
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89 | static void (*method_poll)(ev_tstamp timeout); |
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90 | |
308 | |
91 | /*****************************************************************************/ |
309 | /*****************************************************************************/ |
92 | |
310 | |
93 | ev_tstamp |
311 | ev_tstamp |
94 | ev_time (void) |
312 | ev_time (void) |
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102 | gettimeofday (&tv, 0); |
320 | gettimeofday (&tv, 0); |
103 | return tv.tv_sec + tv.tv_usec * 1e-6; |
321 | return tv.tv_sec + tv.tv_usec * 1e-6; |
104 | #endif |
322 | #endif |
105 | } |
323 | } |
106 | |
324 | |
107 | static ev_tstamp |
325 | inline ev_tstamp |
108 | get_clock (void) |
326 | get_clock (void) |
109 | { |
327 | { |
110 | #if EV_USE_MONOTONIC |
328 | #if EV_USE_MONOTONIC |
111 | if (have_monotonic) |
329 | if (expect_true (have_monotonic)) |
112 | { |
330 | { |
113 | struct timespec ts; |
331 | struct timespec ts; |
114 | clock_gettime (CLOCK_MONOTONIC, &ts); |
332 | clock_gettime (CLOCK_MONOTONIC, &ts); |
115 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
333 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
116 | } |
334 | } |
117 | #endif |
335 | #endif |
118 | |
336 | |
119 | return ev_time (); |
337 | return ev_time (); |
120 | } |
338 | } |
121 | |
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 | |
122 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
348 | #define array_roundsize(type,n) (((n) | 4) & ~3) |
123 | |
349 | |
124 | #define array_needsize(base,cur,cnt,init) \ |
350 | #define array_needsize(type,base,cur,cnt,init) \ |
125 | if ((cnt) > cur) \ |
351 | if (expect_false ((cnt) > cur)) \ |
126 | { \ |
352 | { \ |
127 | int newcnt = cur; \ |
353 | int newcnt = cur; \ |
128 | do \ |
354 | do \ |
129 | { \ |
355 | { \ |
130 | newcnt = array_roundsize (base, newcnt << 1); \ |
356 | newcnt = array_roundsize (type, newcnt << 1); \ |
131 | } \ |
357 | } \ |
132 | while ((cnt) > newcnt); \ |
358 | while ((cnt) > newcnt); \ |
133 | \ |
359 | \ |
134 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
360 | base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\ |
135 | init (base + cur, newcnt - cur); \ |
361 | init (base + cur, newcnt - cur); \ |
136 | cur = newcnt; \ |
362 | cur = newcnt; \ |
137 | } |
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; |
138 | |
375 | |
139 | /*****************************************************************************/ |
376 | /*****************************************************************************/ |
140 | |
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141 | typedef struct |
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142 | { |
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143 | struct ev_io *head; |
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144 | unsigned char events; |
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145 | unsigned char reify; |
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146 | } ANFD; |
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147 | |
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148 | static ANFD *anfds; |
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149 | static int anfdmax; |
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150 | |
377 | |
151 | static void |
378 | static void |
152 | anfds_init (ANFD *base, int count) |
379 | anfds_init (ANFD *base, int count) |
153 | { |
380 | { |
154 | while (count--) |
381 | while (count--) |
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159 | |
386 | |
160 | ++base; |
387 | ++base; |
161 | } |
388 | } |
162 | } |
389 | } |
163 | |
390 | |
164 | typedef struct |
391 | void |
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392 | ev_feed_event (EV_P_ void *w, int revents) |
165 | { |
393 | { |
166 | W w; |
394 | W w_ = (W)w; |
167 | int events; |
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168 | } ANPENDING; |
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169 | |
395 | |
170 | static ANPENDING *pendings; |
396 | if (expect_false (w_->pending)) |
171 | static int pendingmax, pendingcnt; |
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172 | |
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173 | static void |
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174 | event (W w, int events) |
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175 | { |
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176 | if (w->pending) |
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177 | { |
397 | { |
178 | pendings [w->pending - 1].events |= events; |
398 | pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; |
179 | return; |
399 | return; |
180 | } |
400 | } |
181 | |
401 | |
182 | w->pending = ++pendingcnt; |
402 | w_->pending = ++pendingcnt [ABSPRI (w_)]; |
183 | array_needsize (pendings, pendingmax, pendingcnt, ); |
403 | array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2); |
184 | pendings [pendingcnt - 1].w = w; |
404 | pendings [ABSPRI (w_)][w_->pending - 1].w = w_; |
185 | pendings [pendingcnt - 1].events = events; |
405 | pendings [ABSPRI (w_)][w_->pending - 1].events = revents; |
186 | } |
406 | } |
187 | |
407 | |
188 | static void |
408 | static void |
189 | queue_events (W *events, int eventcnt, int type) |
409 | queue_events (EV_P_ W *events, int eventcnt, int type) |
190 | { |
410 | { |
191 | int i; |
411 | int i; |
192 | |
412 | |
193 | for (i = 0; i < eventcnt; ++i) |
413 | for (i = 0; i < eventcnt; ++i) |
194 | event (events [i], type); |
414 | ev_feed_event (EV_A_ events [i], type); |
195 | } |
415 | } |
196 | |
416 | |
197 | static void |
417 | inline void |
198 | fd_event (int fd, int events) |
418 | fd_event (EV_P_ int fd, int revents) |
199 | { |
419 | { |
200 | ANFD *anfd = anfds + fd; |
420 | ANFD *anfd = anfds + fd; |
201 | struct ev_io *w; |
421 | struct ev_io *w; |
202 | |
422 | |
203 | for (w = anfd->head; w; w = w->next) |
423 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
204 | { |
424 | { |
205 | int ev = w->events & events; |
425 | int ev = w->events & revents; |
206 | |
426 | |
207 | if (ev) |
427 | if (ev) |
208 | event ((W)w, ev); |
428 | ev_feed_event (EV_A_ (W)w, ev); |
209 | } |
429 | } |
|
|
430 | } |
|
|
431 | |
|
|
432 | void |
|
|
433 | ev_feed_fd_event (EV_P_ int fd, int revents) |
|
|
434 | { |
|
|
435 | fd_event (EV_A_ fd, revents); |
210 | } |
436 | } |
211 | |
437 | |
212 | /*****************************************************************************/ |
438 | /*****************************************************************************/ |
213 | |
439 | |
214 | static int *fdchanges; |
440 | inline void |
215 | static int fdchangemax, fdchangecnt; |
441 | fd_reify (EV_P) |
216 | |
|
|
217 | static void |
|
|
218 | fd_reify (void) |
|
|
219 | { |
442 | { |
220 | int i; |
443 | int i; |
221 | |
444 | |
222 | for (i = 0; i < fdchangecnt; ++i) |
445 | for (i = 0; i < fdchangecnt; ++i) |
223 | { |
446 | { |
… | |
… | |
225 | ANFD *anfd = anfds + fd; |
448 | ANFD *anfd = anfds + fd; |
226 | struct ev_io *w; |
449 | struct ev_io *w; |
227 | |
450 | |
228 | int events = 0; |
451 | int events = 0; |
229 | |
452 | |
230 | for (w = anfd->head; w; w = w->next) |
453 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
231 | events |= w->events; |
454 | events |= w->events; |
232 | |
455 | |
|
|
456 | #if EV_SELECT_IS_WINSOCKET |
|
|
457 | if (events) |
|
|
458 | { |
|
|
459 | unsigned long argp; |
|
|
460 | anfd->handle = _get_osfhandle (fd); |
|
|
461 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
|
|
462 | } |
|
|
463 | #endif |
|
|
464 | |
233 | anfd->reify = 0; |
465 | anfd->reify = 0; |
234 | |
466 | |
235 | if (anfd->events != events) |
|
|
236 | { |
|
|
237 | method_modify (fd, anfd->events, events); |
467 | backend_modify (EV_A_ fd, anfd->events, events); |
238 | anfd->events = events; |
468 | anfd->events = events; |
239 | } |
|
|
240 | } |
469 | } |
241 | |
470 | |
242 | fdchangecnt = 0; |
471 | fdchangecnt = 0; |
243 | } |
472 | } |
244 | |
473 | |
245 | static void |
474 | static void |
246 | fd_change (int fd) |
475 | fd_change (EV_P_ int fd) |
247 | { |
476 | { |
248 | if (anfds [fd].reify || fdchangecnt < 0) |
477 | if (expect_false (anfds [fd].reify)) |
249 | return; |
478 | return; |
250 | |
479 | |
251 | anfds [fd].reify = 1; |
480 | anfds [fd].reify = 1; |
252 | |
481 | |
253 | ++fdchangecnt; |
482 | ++fdchangecnt; |
254 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
483 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
255 | fdchanges [fdchangecnt - 1] = fd; |
484 | fdchanges [fdchangecnt - 1] = fd; |
256 | } |
485 | } |
257 | |
486 | |
|
|
487 | static void |
|
|
488 | fd_kill (EV_P_ int fd) |
|
|
489 | { |
|
|
490 | struct ev_io *w; |
|
|
491 | |
|
|
492 | while ((w = (struct ev_io *)anfds [fd].head)) |
|
|
493 | { |
|
|
494 | ev_io_stop (EV_A_ w); |
|
|
495 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
496 | } |
|
|
497 | } |
|
|
498 | |
|
|
499 | inline int |
|
|
500 | fd_valid (int fd) |
|
|
501 | { |
|
|
502 | #ifdef _WIN32 |
|
|
503 | return _get_osfhandle (fd) != -1; |
|
|
504 | #else |
|
|
505 | return fcntl (fd, F_GETFD) != -1; |
|
|
506 | #endif |
|
|
507 | } |
|
|
508 | |
258 | /* called on EBADF to verify fds */ |
509 | /* called on EBADF to verify fds */ |
259 | static void |
510 | static void |
260 | fd_recheck (void) |
511 | fd_ebadf (EV_P) |
261 | { |
512 | { |
262 | int fd; |
513 | int fd; |
263 | |
514 | |
264 | for (fd = 0; fd < anfdmax; ++fd) |
515 | for (fd = 0; fd < anfdmax; ++fd) |
265 | if (anfds [fd].events) |
516 | if (anfds [fd].events) |
266 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
517 | if (!fd_valid (fd) == -1 && errno == EBADF) |
267 | while (anfds [fd].head) |
518 | fd_kill (EV_A_ fd); |
|
|
519 | } |
|
|
520 | |
|
|
521 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
522 | static void |
|
|
523 | fd_enomem (EV_P) |
|
|
524 | { |
|
|
525 | int fd; |
|
|
526 | |
|
|
527 | for (fd = anfdmax; fd--; ) |
|
|
528 | if (anfds [fd].events) |
268 | { |
529 | { |
269 | ev_io_stop (anfds [fd].head); |
530 | fd_kill (EV_A_ fd); |
270 | event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE); |
531 | return; |
271 | } |
532 | } |
|
|
533 | } |
|
|
534 | |
|
|
535 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
|
|
536 | static void |
|
|
537 | fd_rearm_all (EV_P) |
|
|
538 | { |
|
|
539 | int fd; |
|
|
540 | |
|
|
541 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
542 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
543 | if (anfds [fd].events) |
|
|
544 | { |
|
|
545 | anfds [fd].events = 0; |
|
|
546 | fd_change (EV_A_ fd); |
|
|
547 | } |
272 | } |
548 | } |
273 | |
549 | |
274 | /*****************************************************************************/ |
550 | /*****************************************************************************/ |
275 | |
551 | |
276 | static struct ev_timer **timers; |
|
|
277 | static int timermax, timercnt; |
|
|
278 | |
|
|
279 | static struct ev_periodic **periodics; |
|
|
280 | static int periodicmax, periodiccnt; |
|
|
281 | |
|
|
282 | static void |
552 | static void |
283 | upheap (WT *timers, int k) |
553 | upheap (WT *heap, int k) |
284 | { |
554 | { |
285 | WT w = timers [k]; |
555 | WT w = heap [k]; |
286 | |
556 | |
287 | while (k && timers [k >> 1]->at > w->at) |
557 | while (k && heap [k >> 1]->at > w->at) |
288 | { |
558 | { |
289 | timers [k] = timers [k >> 1]; |
559 | heap [k] = heap [k >> 1]; |
290 | timers [k]->active = k + 1; |
560 | ((W)heap [k])->active = k + 1; |
291 | k >>= 1; |
561 | k >>= 1; |
292 | } |
562 | } |
293 | |
563 | |
294 | timers [k] = w; |
564 | heap [k] = w; |
295 | timers [k]->active = k + 1; |
565 | ((W)heap [k])->active = k + 1; |
296 | |
566 | |
297 | } |
567 | } |
298 | |
568 | |
299 | static void |
569 | static void |
300 | downheap (WT *timers, int N, int k) |
570 | downheap (WT *heap, int N, int k) |
301 | { |
571 | { |
302 | WT w = timers [k]; |
572 | WT w = heap [k]; |
303 | |
573 | |
304 | while (k < (N >> 1)) |
574 | while (k < (N >> 1)) |
305 | { |
575 | { |
306 | int j = k << 1; |
576 | int j = k << 1; |
307 | |
577 | |
308 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
578 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
309 | ++j; |
579 | ++j; |
310 | |
580 | |
311 | if (w->at <= timers [j]->at) |
581 | if (w->at <= heap [j]->at) |
312 | break; |
582 | break; |
313 | |
583 | |
314 | timers [k] = timers [j]; |
584 | heap [k] = heap [j]; |
315 | timers [k]->active = k + 1; |
585 | ((W)heap [k])->active = k + 1; |
316 | k = j; |
586 | k = j; |
317 | } |
587 | } |
318 | |
588 | |
319 | timers [k] = w; |
589 | heap [k] = w; |
320 | timers [k]->active = k + 1; |
590 | ((W)heap [k])->active = k + 1; |
|
|
591 | } |
|
|
592 | |
|
|
593 | inline void |
|
|
594 | adjustheap (WT *heap, int N, int k) |
|
|
595 | { |
|
|
596 | upheap (heap, k); |
|
|
597 | downheap (heap, N, k); |
321 | } |
598 | } |
322 | |
599 | |
323 | /*****************************************************************************/ |
600 | /*****************************************************************************/ |
324 | |
601 | |
325 | typedef struct |
602 | typedef struct |
326 | { |
603 | { |
327 | struct ev_signal *head; |
604 | WL head; |
328 | sig_atomic_t gotsig; |
605 | sig_atomic_t volatile gotsig; |
329 | } ANSIG; |
606 | } ANSIG; |
330 | |
607 | |
331 | static ANSIG *signals; |
608 | static ANSIG *signals; |
332 | static int signalmax; |
609 | static int signalmax; |
333 | |
610 | |
334 | static int sigpipe [2]; |
611 | static int sigpipe [2]; |
335 | static sig_atomic_t gotsig; |
612 | static sig_atomic_t volatile gotsig; |
336 | static struct ev_io sigev; |
613 | static struct ev_io sigev; |
337 | |
614 | |
338 | static void |
615 | static void |
339 | signals_init (ANSIG *base, int count) |
616 | signals_init (ANSIG *base, int count) |
340 | { |
617 | { |
… | |
… | |
348 | } |
625 | } |
349 | |
626 | |
350 | static void |
627 | static void |
351 | sighandler (int signum) |
628 | sighandler (int signum) |
352 | { |
629 | { |
|
|
630 | #if _WIN32 |
|
|
631 | signal (signum, sighandler); |
|
|
632 | #endif |
|
|
633 | |
353 | signals [signum - 1].gotsig = 1; |
634 | signals [signum - 1].gotsig = 1; |
354 | |
635 | |
355 | if (!gotsig) |
636 | if (!gotsig) |
356 | { |
637 | { |
|
|
638 | int old_errno = errno; |
357 | gotsig = 1; |
639 | gotsig = 1; |
358 | write (sigpipe [1], &gotsig, 1); |
640 | write (sigpipe [1], &signum, 1); |
|
|
641 | errno = old_errno; |
359 | } |
642 | } |
360 | } |
643 | } |
361 | |
644 | |
|
|
645 | void |
|
|
646 | ev_feed_signal_event (EV_P_ int signum) |
|
|
647 | { |
|
|
648 | WL w; |
|
|
649 | |
|
|
650 | #if EV_MULTIPLICITY |
|
|
651 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
652 | #endif |
|
|
653 | |
|
|
654 | --signum; |
|
|
655 | |
|
|
656 | if (signum < 0 || signum >= signalmax) |
|
|
657 | return; |
|
|
658 | |
|
|
659 | signals [signum].gotsig = 0; |
|
|
660 | |
|
|
661 | for (w = signals [signum].head; w; w = w->next) |
|
|
662 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
663 | } |
|
|
664 | |
362 | static void |
665 | static void |
363 | sigcb (struct ev_io *iow, int revents) |
666 | sigcb (EV_P_ struct ev_io *iow, int revents) |
364 | { |
667 | { |
365 | struct ev_signal *w; |
|
|
366 | int sig; |
668 | int signum; |
367 | |
669 | |
|
|
670 | read (sigpipe [0], &revents, 1); |
368 | gotsig = 0; |
671 | gotsig = 0; |
369 | read (sigpipe [0], &revents, 1); |
|
|
370 | |
672 | |
371 | for (sig = signalmax; sig--; ) |
673 | for (signum = signalmax; signum--; ) |
372 | if (signals [sig].gotsig) |
674 | if (signals [signum].gotsig) |
373 | { |
675 | ev_feed_signal_event (EV_A_ signum + 1); |
374 | signals [sig].gotsig = 0; |
|
|
375 | |
|
|
376 | for (w = signals [sig].head; w; w = w->next) |
|
|
377 | event ((W)w, EV_SIGNAL); |
|
|
378 | } |
|
|
379 | } |
676 | } |
380 | |
677 | |
381 | static void |
678 | static void |
382 | siginit (void) |
679 | fd_intern (int fd) |
383 | { |
680 | { |
|
|
681 | #ifdef _WIN32 |
|
|
682 | int arg = 1; |
|
|
683 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
684 | #else |
384 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
685 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
385 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
386 | |
|
|
387 | /* rather than sort out wether we really need nb, set it */ |
|
|
388 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
686 | fcntl (fd, F_SETFL, O_NONBLOCK); |
389 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
687 | #endif |
|
|
688 | } |
|
|
689 | |
|
|
690 | static void |
|
|
691 | siginit (EV_P) |
|
|
692 | { |
|
|
693 | fd_intern (sigpipe [0]); |
|
|
694 | fd_intern (sigpipe [1]); |
390 | |
695 | |
391 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
696 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
392 | ev_io_start (&sigev); |
697 | ev_io_start (EV_A_ &sigev); |
|
|
698 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
393 | } |
699 | } |
394 | |
700 | |
395 | /*****************************************************************************/ |
701 | /*****************************************************************************/ |
396 | |
702 | |
397 | static struct ev_idle **idles; |
|
|
398 | static int idlemax, idlecnt; |
|
|
399 | |
|
|
400 | static struct ev_prepare **prepares; |
|
|
401 | static int preparemax, preparecnt; |
|
|
402 | |
|
|
403 | static struct ev_check **checks; |
|
|
404 | static int checkmax, checkcnt; |
|
|
405 | |
|
|
406 | /*****************************************************************************/ |
|
|
407 | |
|
|
408 | static struct ev_child *childs [PID_HASHSIZE]; |
703 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
704 | |
|
|
705 | #ifndef _WIN32 |
|
|
706 | |
409 | static struct ev_signal childev; |
707 | static struct ev_signal childev; |
410 | |
708 | |
411 | #ifndef WCONTINUED |
709 | #ifndef WCONTINUED |
412 | # define WCONTINUED 0 |
710 | # define WCONTINUED 0 |
413 | #endif |
711 | #endif |
414 | |
712 | |
415 | static void |
713 | static void |
416 | childcb (struct ev_signal *sw, int revents) |
714 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
417 | { |
715 | { |
418 | struct ev_child *w; |
716 | struct ev_child *w; |
|
|
717 | |
|
|
718 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
719 | if (w->pid == pid || !w->pid) |
|
|
720 | { |
|
|
721 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
|
|
722 | w->rpid = pid; |
|
|
723 | w->rstatus = status; |
|
|
724 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
725 | } |
|
|
726 | } |
|
|
727 | |
|
|
728 | static void |
|
|
729 | childcb (EV_P_ struct ev_signal *sw, int revents) |
|
|
730 | { |
419 | int pid, status; |
731 | int pid, status; |
420 | |
732 | |
421 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
733 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
422 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
734 | { |
423 | if (w->pid == pid || w->pid == -1) |
735 | /* make sure we are called again until all childs have been reaped */ |
424 | { |
736 | /* we need to do it this way so that the callback gets called before we continue */ |
425 | w->status = status; |
737 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
426 | event ((W)w, EV_CHILD); |
738 | |
427 | } |
739 | child_reap (EV_A_ sw, pid, pid, status); |
|
|
740 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
|
|
741 | } |
428 | } |
742 | } |
|
|
743 | |
|
|
744 | #endif |
429 | |
745 | |
430 | /*****************************************************************************/ |
746 | /*****************************************************************************/ |
431 | |
747 | |
|
|
748 | #if EV_USE_PORT |
|
|
749 | # include "ev_port.c" |
|
|
750 | #endif |
|
|
751 | #if EV_USE_KQUEUE |
|
|
752 | # include "ev_kqueue.c" |
|
|
753 | #endif |
432 | #if EV_USE_EPOLL |
754 | #if EV_USE_EPOLL |
433 | # include "ev_epoll.c" |
755 | # include "ev_epoll.c" |
434 | #endif |
756 | #endif |
|
|
757 | #if EV_USE_POLL |
|
|
758 | # include "ev_poll.c" |
|
|
759 | #endif |
435 | #if EV_USE_SELECT |
760 | #if EV_USE_SELECT |
436 | # include "ev_select.c" |
761 | # include "ev_select.c" |
437 | #endif |
762 | #endif |
438 | |
763 | |
439 | int |
764 | int |
… | |
… | |
446 | ev_version_minor (void) |
771 | ev_version_minor (void) |
447 | { |
772 | { |
448 | return EV_VERSION_MINOR; |
773 | return EV_VERSION_MINOR; |
449 | } |
774 | } |
450 | |
775 | |
451 | int ev_init (int flags) |
776 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
777 | static int |
|
|
778 | enable_secure (void) |
452 | { |
779 | { |
453 | if (!ev_method) |
780 | #ifdef _WIN32 |
|
|
781 | return 0; |
|
|
782 | #else |
|
|
783 | return getuid () != geteuid () |
|
|
784 | || getgid () != getegid (); |
|
|
785 | #endif |
|
|
786 | } |
|
|
787 | |
|
|
788 | unsigned int |
|
|
789 | ev_supported_backends (void) |
|
|
790 | { |
|
|
791 | unsigned int flags = 0; |
|
|
792 | |
|
|
793 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
794 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
795 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
796 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
797 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
798 | |
|
|
799 | return flags; |
|
|
800 | } |
|
|
801 | |
|
|
802 | unsigned int |
|
|
803 | ev_recommended_backends (void) |
|
|
804 | { |
|
|
805 | unsigned int flags = ev_supported_backends (); |
|
|
806 | |
|
|
807 | #ifndef __NetBSD__ |
|
|
808 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
809 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
810 | flags &= ~EVBACKEND_KQUEUE; |
|
|
811 | #endif |
|
|
812 | #ifdef __APPLE__ |
|
|
813 | // flags &= ~EVBACKEND_KQUEUE; for documentation |
|
|
814 | flags &= ~EVBACKEND_POLL; |
|
|
815 | #endif |
|
|
816 | |
|
|
817 | return flags; |
|
|
818 | } |
|
|
819 | |
|
|
820 | unsigned int |
|
|
821 | ev_backend (EV_P) |
|
|
822 | { |
|
|
823 | return backend; |
|
|
824 | } |
|
|
825 | |
|
|
826 | static void |
|
|
827 | loop_init (EV_P_ unsigned int flags) |
|
|
828 | { |
|
|
829 | if (!backend) |
454 | { |
830 | { |
455 | #if EV_USE_MONOTONIC |
831 | #if EV_USE_MONOTONIC |
456 | { |
832 | { |
457 | struct timespec ts; |
833 | struct timespec ts; |
458 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
834 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
459 | have_monotonic = 1; |
835 | have_monotonic = 1; |
460 | } |
836 | } |
461 | #endif |
837 | #endif |
462 | |
838 | |
463 | ev_now = ev_time (); |
839 | ev_rt_now = ev_time (); |
464 | now = get_clock (); |
840 | mn_now = get_clock (); |
|
|
841 | now_floor = mn_now; |
465 | diff = ev_now - now; |
842 | rtmn_diff = ev_rt_now - mn_now; |
466 | |
843 | |
467 | if (pipe (sigpipe)) |
844 | if (!(flags & EVFLAG_NOENV) |
468 | return 0; |
845 | && !enable_secure () |
|
|
846 | && getenv ("LIBEV_FLAGS")) |
|
|
847 | flags = atoi (getenv ("LIBEV_FLAGS")); |
469 | |
848 | |
470 | ev_method = EVMETHOD_NONE; |
849 | if (!(flags & 0x0000ffffUL)) |
|
|
850 | flags |= ev_recommended_backends (); |
|
|
851 | |
|
|
852 | backend = 0; |
|
|
853 | #if EV_USE_PORT |
|
|
854 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
855 | #endif |
|
|
856 | #if EV_USE_KQUEUE |
|
|
857 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
858 | #endif |
471 | #if EV_USE_EPOLL |
859 | #if EV_USE_EPOLL |
472 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
860 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
|
|
861 | #endif |
|
|
862 | #if EV_USE_POLL |
|
|
863 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
473 | #endif |
864 | #endif |
474 | #if EV_USE_SELECT |
865 | #if EV_USE_SELECT |
475 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
866 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
476 | #endif |
867 | #endif |
477 | |
868 | |
478 | if (ev_method) |
869 | ev_init (&sigev, sigcb); |
|
|
870 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
871 | } |
|
|
872 | } |
|
|
873 | |
|
|
874 | static void |
|
|
875 | loop_destroy (EV_P) |
|
|
876 | { |
|
|
877 | int i; |
|
|
878 | |
|
|
879 | #if EV_USE_PORT |
|
|
880 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
881 | #endif |
|
|
882 | #if EV_USE_KQUEUE |
|
|
883 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
884 | #endif |
|
|
885 | #if EV_USE_EPOLL |
|
|
886 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
887 | #endif |
|
|
888 | #if EV_USE_POLL |
|
|
889 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
890 | #endif |
|
|
891 | #if EV_USE_SELECT |
|
|
892 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
893 | #endif |
|
|
894 | |
|
|
895 | for (i = NUMPRI; i--; ) |
|
|
896 | array_free (pending, [i]); |
|
|
897 | |
|
|
898 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
899 | array_free (fdchange, EMPTY0); |
|
|
900 | array_free (timer, EMPTY0); |
|
|
901 | #if EV_PERIODICS |
|
|
902 | array_free (periodic, EMPTY0); |
|
|
903 | #endif |
|
|
904 | array_free (idle, EMPTY0); |
|
|
905 | array_free (prepare, EMPTY0); |
|
|
906 | array_free (check, EMPTY0); |
|
|
907 | |
|
|
908 | backend = 0; |
|
|
909 | } |
|
|
910 | |
|
|
911 | static void |
|
|
912 | loop_fork (EV_P) |
|
|
913 | { |
|
|
914 | #if EV_USE_PORT |
|
|
915 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
916 | #endif |
|
|
917 | #if EV_USE_KQUEUE |
|
|
918 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
919 | #endif |
|
|
920 | #if EV_USE_EPOLL |
|
|
921 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
922 | #endif |
|
|
923 | |
|
|
924 | if (ev_is_active (&sigev)) |
|
|
925 | { |
|
|
926 | /* default loop */ |
|
|
927 | |
|
|
928 | ev_ref (EV_A); |
|
|
929 | ev_io_stop (EV_A_ &sigev); |
|
|
930 | close (sigpipe [0]); |
|
|
931 | close (sigpipe [1]); |
|
|
932 | |
|
|
933 | while (pipe (sigpipe)) |
|
|
934 | syserr ("(libev) error creating pipe"); |
|
|
935 | |
|
|
936 | siginit (EV_A); |
|
|
937 | } |
|
|
938 | |
|
|
939 | postfork = 0; |
|
|
940 | } |
|
|
941 | |
|
|
942 | #if EV_MULTIPLICITY |
|
|
943 | struct ev_loop * |
|
|
944 | ev_loop_new (unsigned int flags) |
|
|
945 | { |
|
|
946 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
947 | |
|
|
948 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
949 | |
|
|
950 | loop_init (EV_A_ flags); |
|
|
951 | |
|
|
952 | if (ev_backend (EV_A)) |
|
|
953 | return loop; |
|
|
954 | |
|
|
955 | return 0; |
|
|
956 | } |
|
|
957 | |
|
|
958 | void |
|
|
959 | ev_loop_destroy (EV_P) |
|
|
960 | { |
|
|
961 | loop_destroy (EV_A); |
|
|
962 | ev_free (loop); |
|
|
963 | } |
|
|
964 | |
|
|
965 | void |
|
|
966 | ev_loop_fork (EV_P) |
|
|
967 | { |
|
|
968 | postfork = 1; |
|
|
969 | } |
|
|
970 | |
|
|
971 | #endif |
|
|
972 | |
|
|
973 | #if EV_MULTIPLICITY |
|
|
974 | struct ev_loop * |
|
|
975 | ev_default_loop_init (unsigned int flags) |
|
|
976 | #else |
|
|
977 | int |
|
|
978 | ev_default_loop (unsigned int flags) |
|
|
979 | #endif |
|
|
980 | { |
|
|
981 | if (sigpipe [0] == sigpipe [1]) |
|
|
982 | if (pipe (sigpipe)) |
|
|
983 | return 0; |
|
|
984 | |
|
|
985 | if (!ev_default_loop_ptr) |
|
|
986 | { |
|
|
987 | #if EV_MULTIPLICITY |
|
|
988 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
|
|
989 | #else |
|
|
990 | ev_default_loop_ptr = 1; |
|
|
991 | #endif |
|
|
992 | |
|
|
993 | loop_init (EV_A_ flags); |
|
|
994 | |
|
|
995 | if (ev_backend (EV_A)) |
479 | { |
996 | { |
480 | ev_watcher_init (&sigev, sigcb); |
|
|
481 | siginit (); |
997 | siginit (EV_A); |
482 | |
998 | |
|
|
999 | #ifndef _WIN32 |
483 | ev_signal_init (&childev, childcb, SIGCHLD); |
1000 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
1001 | ev_set_priority (&childev, EV_MAXPRI); |
484 | ev_signal_start (&childev); |
1002 | ev_signal_start (EV_A_ &childev); |
|
|
1003 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
1004 | #endif |
485 | } |
1005 | } |
|
|
1006 | else |
|
|
1007 | ev_default_loop_ptr = 0; |
486 | } |
1008 | } |
487 | |
1009 | |
488 | return ev_method; |
1010 | return ev_default_loop_ptr; |
|
|
1011 | } |
|
|
1012 | |
|
|
1013 | void |
|
|
1014 | ev_default_destroy (void) |
|
|
1015 | { |
|
|
1016 | #if EV_MULTIPLICITY |
|
|
1017 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1018 | #endif |
|
|
1019 | |
|
|
1020 | #ifndef _WIN32 |
|
|
1021 | ev_ref (EV_A); /* child watcher */ |
|
|
1022 | ev_signal_stop (EV_A_ &childev); |
|
|
1023 | #endif |
|
|
1024 | |
|
|
1025 | ev_ref (EV_A); /* signal watcher */ |
|
|
1026 | ev_io_stop (EV_A_ &sigev); |
|
|
1027 | |
|
|
1028 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
1029 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
1030 | |
|
|
1031 | loop_destroy (EV_A); |
|
|
1032 | } |
|
|
1033 | |
|
|
1034 | void |
|
|
1035 | ev_default_fork (void) |
|
|
1036 | { |
|
|
1037 | #if EV_MULTIPLICITY |
|
|
1038 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1039 | #endif |
|
|
1040 | |
|
|
1041 | if (backend) |
|
|
1042 | postfork = 1; |
489 | } |
1043 | } |
490 | |
1044 | |
491 | /*****************************************************************************/ |
1045 | /*****************************************************************************/ |
492 | |
1046 | |
493 | void |
|
|
494 | ev_prefork (void) |
|
|
495 | { |
|
|
496 | /* nop */ |
|
|
497 | } |
|
|
498 | |
|
|
499 | void |
|
|
500 | ev_postfork_parent (void) |
|
|
501 | { |
|
|
502 | /* nop */ |
|
|
503 | } |
|
|
504 | |
|
|
505 | void |
|
|
506 | ev_postfork_child (void) |
|
|
507 | { |
|
|
508 | #if EV_USE_EPOLL |
|
|
509 | if (ev_method == EVMETHOD_EPOLL) |
|
|
510 | epoll_postfork_child (); |
|
|
511 | #endif |
|
|
512 | |
|
|
513 | ev_io_stop (&sigev); |
|
|
514 | close (sigpipe [0]); |
|
|
515 | close (sigpipe [1]); |
|
|
516 | pipe (sigpipe); |
|
|
517 | siginit (); |
|
|
518 | } |
|
|
519 | |
|
|
520 | /*****************************************************************************/ |
|
|
521 | |
|
|
522 | static void |
1047 | static int |
|
|
1048 | any_pending (EV_P) |
|
|
1049 | { |
|
|
1050 | int pri; |
|
|
1051 | |
|
|
1052 | for (pri = NUMPRI; pri--; ) |
|
|
1053 | if (pendingcnt [pri]) |
|
|
1054 | return 1; |
|
|
1055 | |
|
|
1056 | return 0; |
|
|
1057 | } |
|
|
1058 | |
|
|
1059 | inline void |
523 | call_pending (void) |
1060 | call_pending (EV_P) |
524 | { |
1061 | { |
|
|
1062 | int pri; |
|
|
1063 | |
|
|
1064 | for (pri = NUMPRI; pri--; ) |
525 | while (pendingcnt) |
1065 | while (pendingcnt [pri]) |
526 | { |
1066 | { |
527 | ANPENDING *p = pendings + --pendingcnt; |
1067 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
528 | |
1068 | |
529 | if (p->w) |
1069 | if (expect_true (p->w)) |
530 | { |
1070 | { |
531 | p->w->pending = 0; |
1071 | p->w->pending = 0; |
532 | p->w->cb (p->w, p->events); |
1072 | EV_CB_INVOKE (p->w, p->events); |
533 | } |
1073 | } |
534 | } |
1074 | } |
535 | } |
1075 | } |
536 | |
1076 | |
537 | static void |
1077 | inline void |
538 | timers_reify (void) |
1078 | timers_reify (EV_P) |
539 | { |
1079 | { |
540 | while (timercnt && timers [0]->at <= now) |
1080 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
541 | { |
1081 | { |
542 | struct ev_timer *w = timers [0]; |
1082 | struct ev_timer *w = timers [0]; |
|
|
1083 | |
|
|
1084 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
543 | |
1085 | |
544 | /* first reschedule or stop timer */ |
1086 | /* first reschedule or stop timer */ |
545 | if (w->repeat) |
1087 | if (w->repeat) |
546 | { |
1088 | { |
547 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
1089 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
1090 | |
548 | w->at = now + w->repeat; |
1091 | ((WT)w)->at += w->repeat; |
|
|
1092 | if (((WT)w)->at < mn_now) |
|
|
1093 | ((WT)w)->at = mn_now; |
|
|
1094 | |
549 | downheap ((WT *)timers, timercnt, 0); |
1095 | downheap ((WT *)timers, timercnt, 0); |
550 | } |
1096 | } |
551 | else |
1097 | else |
552 | ev_timer_stop (w); /* nonrepeating: stop timer */ |
1098 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
553 | |
1099 | |
554 | event ((W)w, EV_TIMEOUT); |
1100 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
555 | } |
1101 | } |
556 | } |
1102 | } |
557 | |
1103 | |
558 | static void |
1104 | #if EV_PERIODICS |
|
|
1105 | inline void |
559 | periodics_reify (void) |
1106 | periodics_reify (EV_P) |
560 | { |
1107 | { |
561 | while (periodiccnt && periodics [0]->at <= ev_now) |
1108 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
562 | { |
1109 | { |
563 | struct ev_periodic *w = periodics [0]; |
1110 | struct ev_periodic *w = periodics [0]; |
564 | |
1111 | |
|
|
1112 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
|
|
1113 | |
565 | /* first reschedule or stop timer */ |
1114 | /* first reschedule or stop timer */ |
566 | if (w->interval) |
1115 | if (w->reschedule_cb) |
567 | { |
1116 | { |
|
|
1117 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); |
|
|
1118 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
|
|
1119 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1120 | } |
|
|
1121 | else if (w->interval) |
|
|
1122 | { |
568 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
1123 | ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
569 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now)); |
1124 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
570 | downheap ((WT *)periodics, periodiccnt, 0); |
1125 | downheap ((WT *)periodics, periodiccnt, 0); |
571 | } |
1126 | } |
572 | else |
1127 | else |
573 | ev_periodic_stop (w); /* nonrepeating: stop timer */ |
1128 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
574 | |
1129 | |
575 | event ((W)w, EV_PERIODIC); |
1130 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
576 | } |
1131 | } |
577 | } |
1132 | } |
578 | |
1133 | |
579 | static void |
1134 | static void |
580 | periodics_reschedule (ev_tstamp diff) |
1135 | periodics_reschedule (EV_P) |
581 | { |
1136 | { |
582 | int i; |
1137 | int i; |
583 | |
1138 | |
584 | /* adjust periodics after time jump */ |
1139 | /* adjust periodics after time jump */ |
585 | for (i = 0; i < periodiccnt; ++i) |
1140 | for (i = 0; i < periodiccnt; ++i) |
586 | { |
1141 | { |
587 | struct ev_periodic *w = periodics [i]; |
1142 | struct ev_periodic *w = periodics [i]; |
588 | |
1143 | |
|
|
1144 | if (w->reschedule_cb) |
|
|
1145 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
589 | if (w->interval) |
1146 | else if (w->interval) |
|
|
1147 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1148 | } |
|
|
1149 | |
|
|
1150 | /* now rebuild the heap */ |
|
|
1151 | for (i = periodiccnt >> 1; i--; ) |
|
|
1152 | downheap ((WT *)periodics, periodiccnt, i); |
|
|
1153 | } |
|
|
1154 | #endif |
|
|
1155 | |
|
|
1156 | inline int |
|
|
1157 | time_update_monotonic (EV_P) |
|
|
1158 | { |
|
|
1159 | mn_now = get_clock (); |
|
|
1160 | |
|
|
1161 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
1162 | { |
|
|
1163 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1164 | return 0; |
|
|
1165 | } |
|
|
1166 | else |
|
|
1167 | { |
|
|
1168 | now_floor = mn_now; |
|
|
1169 | ev_rt_now = ev_time (); |
|
|
1170 | return 1; |
|
|
1171 | } |
|
|
1172 | } |
|
|
1173 | |
|
|
1174 | inline void |
|
|
1175 | time_update (EV_P) |
|
|
1176 | { |
|
|
1177 | int i; |
|
|
1178 | |
|
|
1179 | #if EV_USE_MONOTONIC |
|
|
1180 | if (expect_true (have_monotonic)) |
|
|
1181 | { |
|
|
1182 | if (time_update_monotonic (EV_A)) |
590 | { |
1183 | { |
591 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
1184 | ev_tstamp odiff = rtmn_diff; |
592 | |
1185 | |
593 | if (fabs (diff) >= 1e-4) |
1186 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
594 | { |
1187 | { |
595 | ev_periodic_stop (w); |
1188 | rtmn_diff = ev_rt_now - mn_now; |
596 | ev_periodic_start (w); |
|
|
597 | |
1189 | |
598 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
1190 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
|
|
1191 | return; /* all is well */ |
|
|
1192 | |
|
|
1193 | ev_rt_now = ev_time (); |
|
|
1194 | mn_now = get_clock (); |
|
|
1195 | now_floor = mn_now; |
599 | } |
1196 | } |
|
|
1197 | |
|
|
1198 | # if EV_PERIODICS |
|
|
1199 | periodics_reschedule (EV_A); |
|
|
1200 | # endif |
|
|
1201 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1202 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
600 | } |
1203 | } |
601 | } |
1204 | } |
602 | } |
1205 | else |
603 | |
1206 | #endif |
604 | static void |
1207 | { |
605 | time_update (void) |
|
|
606 | { |
|
|
607 | int i; |
|
|
608 | |
|
|
609 | ev_now = ev_time (); |
1208 | ev_rt_now = ev_time (); |
610 | |
1209 | |
611 | if (have_monotonic) |
1210 | if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
612 | { |
|
|
613 | ev_tstamp odiff = diff; |
|
|
614 | |
|
|
615 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
616 | { |
1211 | { |
617 | now = get_clock (); |
1212 | #if EV_PERIODICS |
618 | diff = ev_now - now; |
|
|
619 | |
|
|
620 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
|
|
621 | return; /* all is well */ |
|
|
622 | |
|
|
623 | ev_now = ev_time (); |
|
|
624 | } |
|
|
625 | |
|
|
626 | periodics_reschedule (diff - odiff); |
|
|
627 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
628 | } |
|
|
629 | else |
|
|
630 | { |
|
|
631 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
|
|
632 | { |
|
|
633 | periodics_reschedule (ev_now - now); |
1213 | periodics_reschedule (EV_A); |
|
|
1214 | #endif |
634 | |
1215 | |
635 | /* adjust timers. this is easy, as the offset is the same for all */ |
1216 | /* adjust timers. this is easy, as the offset is the same for all */ |
636 | for (i = 0; i < timercnt; ++i) |
1217 | for (i = 0; i < timercnt; ++i) |
637 | timers [i]->at += diff; |
1218 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
638 | } |
1219 | } |
639 | |
1220 | |
640 | now = ev_now; |
1221 | mn_now = ev_rt_now; |
641 | } |
1222 | } |
642 | } |
1223 | } |
643 | |
1224 | |
644 | int ev_loop_done; |
1225 | void |
|
|
1226 | ev_ref (EV_P) |
|
|
1227 | { |
|
|
1228 | ++activecnt; |
|
|
1229 | } |
645 | |
1230 | |
|
|
1231 | void |
|
|
1232 | ev_unref (EV_P) |
|
|
1233 | { |
|
|
1234 | --activecnt; |
|
|
1235 | } |
|
|
1236 | |
|
|
1237 | static int loop_done; |
|
|
1238 | |
|
|
1239 | void |
646 | void ev_loop (int flags) |
1240 | ev_loop (EV_P_ int flags) |
647 | { |
1241 | { |
648 | double block; |
1242 | double block; |
649 | ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
1243 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
650 | |
1244 | |
651 | do |
1245 | while (activecnt) |
652 | { |
1246 | { |
653 | /* queue check watchers (and execute them) */ |
1247 | /* queue check watchers (and execute them) */ |
654 | if (preparecnt) |
1248 | if (expect_false (preparecnt)) |
655 | { |
1249 | { |
656 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
1250 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
657 | call_pending (); |
1251 | call_pending (EV_A); |
658 | } |
1252 | } |
659 | |
1253 | |
|
|
1254 | /* we might have forked, so reify kernel state if necessary */ |
|
|
1255 | if (expect_false (postfork)) |
|
|
1256 | loop_fork (EV_A); |
|
|
1257 | |
660 | /* update fd-related kernel structures */ |
1258 | /* update fd-related kernel structures */ |
661 | fd_reify (); |
1259 | fd_reify (EV_A); |
662 | |
1260 | |
663 | /* calculate blocking time */ |
1261 | /* calculate blocking time */ |
664 | |
1262 | |
665 | /* we only need this for !monotonic clockor timers, but as we basically |
1263 | /* we only need this for !monotonic clock or timers, but as we basically |
666 | always have timers, we just calculate it always */ |
1264 | always have timers, we just calculate it always */ |
|
|
1265 | #if EV_USE_MONOTONIC |
|
|
1266 | if (expect_true (have_monotonic)) |
|
|
1267 | time_update_monotonic (EV_A); |
|
|
1268 | else |
|
|
1269 | #endif |
|
|
1270 | { |
667 | ev_now = ev_time (); |
1271 | ev_rt_now = ev_time (); |
|
|
1272 | mn_now = ev_rt_now; |
|
|
1273 | } |
668 | |
1274 | |
669 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
1275 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
670 | block = 0.; |
1276 | block = 0.; |
671 | else |
1277 | else |
672 | { |
1278 | { |
673 | block = MAX_BLOCKTIME; |
1279 | block = MAX_BLOCKTIME; |
674 | |
1280 | |
675 | if (timercnt) |
1281 | if (timercnt) |
676 | { |
1282 | { |
677 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
1283 | ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; |
678 | if (block > to) block = to; |
1284 | if (block > to) block = to; |
679 | } |
1285 | } |
680 | |
1286 | |
|
|
1287 | #if EV_PERIODICS |
681 | if (periodiccnt) |
1288 | if (periodiccnt) |
682 | { |
1289 | { |
683 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
1290 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; |
684 | if (block > to) block = to; |
1291 | if (block > to) block = to; |
685 | } |
1292 | } |
|
|
1293 | #endif |
686 | |
1294 | |
687 | if (block < 0.) block = 0.; |
1295 | if (expect_false (block < 0.)) block = 0.; |
688 | } |
1296 | } |
689 | |
1297 | |
690 | method_poll (block); |
1298 | backend_poll (EV_A_ block); |
691 | |
1299 | |
692 | /* update ev_now, do magic */ |
1300 | /* update ev_rt_now, do magic */ |
693 | time_update (); |
1301 | time_update (EV_A); |
694 | |
1302 | |
695 | /* queue pending timers and reschedule them */ |
1303 | /* queue pending timers and reschedule them */ |
696 | timers_reify (); /* relative timers called last */ |
1304 | timers_reify (EV_A); /* relative timers called last */ |
|
|
1305 | #if EV_PERIODICS |
697 | periodics_reify (); /* absolute timers called first */ |
1306 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
1307 | #endif |
698 | |
1308 | |
699 | /* queue idle watchers unless io or timers are pending */ |
1309 | /* queue idle watchers unless io or timers are pending */ |
700 | if (!pendingcnt) |
1310 | if (idlecnt && !any_pending (EV_A)) |
701 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
1311 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
702 | |
1312 | |
703 | /* queue check watchers, to be executed first */ |
1313 | /* queue check watchers, to be executed first */ |
704 | if (checkcnt) |
1314 | if (expect_false (checkcnt)) |
705 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1315 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
706 | |
1316 | |
707 | call_pending (); |
1317 | call_pending (EV_A); |
708 | } |
|
|
709 | while (!ev_loop_done); |
|
|
710 | |
1318 | |
|
|
1319 | if (expect_false (loop_done)) |
|
|
1320 | break; |
|
|
1321 | } |
|
|
1322 | |
711 | if (ev_loop_done != 2) |
1323 | if (loop_done != 2) |
712 | ev_loop_done = 0; |
1324 | loop_done = 0; |
|
|
1325 | } |
|
|
1326 | |
|
|
1327 | void |
|
|
1328 | ev_unloop (EV_P_ int how) |
|
|
1329 | { |
|
|
1330 | loop_done = how; |
713 | } |
1331 | } |
714 | |
1332 | |
715 | /*****************************************************************************/ |
1333 | /*****************************************************************************/ |
716 | |
1334 | |
717 | static void |
1335 | inline void |
718 | wlist_add (WL *head, WL elem) |
1336 | wlist_add (WL *head, WL elem) |
719 | { |
1337 | { |
720 | elem->next = *head; |
1338 | elem->next = *head; |
721 | *head = elem; |
1339 | *head = elem; |
722 | } |
1340 | } |
723 | |
1341 | |
724 | static void |
1342 | inline void |
725 | wlist_del (WL *head, WL elem) |
1343 | wlist_del (WL *head, WL elem) |
726 | { |
1344 | { |
727 | while (*head) |
1345 | while (*head) |
728 | { |
1346 | { |
729 | if (*head == elem) |
1347 | if (*head == elem) |
… | |
… | |
734 | |
1352 | |
735 | head = &(*head)->next; |
1353 | head = &(*head)->next; |
736 | } |
1354 | } |
737 | } |
1355 | } |
738 | |
1356 | |
739 | static void |
1357 | inline void |
740 | ev_clear_pending (W w) |
1358 | ev_clear_pending (EV_P_ W w) |
741 | { |
1359 | { |
742 | if (w->pending) |
1360 | if (w->pending) |
743 | { |
1361 | { |
744 | pendings [w->pending - 1].w = 0; |
1362 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
745 | w->pending = 0; |
1363 | w->pending = 0; |
746 | } |
1364 | } |
747 | } |
1365 | } |
748 | |
1366 | |
749 | static void |
1367 | inline void |
750 | ev_start (W w, int active) |
1368 | ev_start (EV_P_ W w, int active) |
751 | { |
1369 | { |
|
|
1370 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1371 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1372 | |
752 | w->active = active; |
1373 | w->active = active; |
|
|
1374 | ev_ref (EV_A); |
753 | } |
1375 | } |
754 | |
1376 | |
755 | static void |
1377 | inline void |
756 | ev_stop (W w) |
1378 | ev_stop (EV_P_ W w) |
757 | { |
1379 | { |
|
|
1380 | ev_unref (EV_A); |
758 | w->active = 0; |
1381 | w->active = 0; |
759 | } |
1382 | } |
760 | |
1383 | |
761 | /*****************************************************************************/ |
1384 | /*****************************************************************************/ |
762 | |
1385 | |
763 | void |
1386 | void |
764 | ev_io_start (struct ev_io *w) |
1387 | ev_io_start (EV_P_ struct ev_io *w) |
765 | { |
1388 | { |
|
|
1389 | int fd = w->fd; |
|
|
1390 | |
766 | if (ev_is_active (w)) |
1391 | if (expect_false (ev_is_active (w))) |
767 | return; |
1392 | return; |
768 | |
1393 | |
769 | int fd = w->fd; |
|
|
770 | |
|
|
771 | assert (("ev_io_start called with negative fd", fd >= 0)); |
1394 | assert (("ev_io_start called with negative fd", fd >= 0)); |
772 | |
1395 | |
773 | ev_start ((W)w, 1); |
1396 | ev_start (EV_A_ (W)w, 1); |
774 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1397 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
775 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1398 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
776 | |
1399 | |
777 | fd_change (fd); |
1400 | fd_change (EV_A_ fd); |
778 | } |
1401 | } |
779 | |
1402 | |
780 | void |
1403 | void |
781 | ev_io_stop (struct ev_io *w) |
1404 | ev_io_stop (EV_P_ struct ev_io *w) |
782 | { |
1405 | { |
783 | ev_clear_pending ((W)w); |
1406 | ev_clear_pending (EV_A_ (W)w); |
784 | if (!ev_is_active (w)) |
1407 | if (expect_false (!ev_is_active (w))) |
785 | return; |
1408 | return; |
786 | |
1409 | |
|
|
1410 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
1411 | |
787 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1412 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
788 | ev_stop ((W)w); |
1413 | ev_stop (EV_A_ (W)w); |
789 | |
1414 | |
790 | fd_change (w->fd); |
1415 | fd_change (EV_A_ w->fd); |
791 | } |
1416 | } |
792 | |
1417 | |
793 | void |
1418 | void |
794 | ev_timer_start (struct ev_timer *w) |
1419 | ev_timer_start (EV_P_ struct ev_timer *w) |
795 | { |
1420 | { |
796 | if (ev_is_active (w)) |
1421 | if (expect_false (ev_is_active (w))) |
797 | return; |
1422 | return; |
798 | |
1423 | |
799 | w->at += now; |
1424 | ((WT)w)->at += mn_now; |
800 | |
1425 | |
801 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
1426 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
802 | |
1427 | |
803 | ev_start ((W)w, ++timercnt); |
1428 | ev_start (EV_A_ (W)w, ++timercnt); |
804 | array_needsize (timers, timermax, timercnt, ); |
1429 | array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2); |
805 | timers [timercnt - 1] = w; |
1430 | timers [timercnt - 1] = w; |
806 | upheap ((WT *)timers, timercnt - 1); |
1431 | upheap ((WT *)timers, timercnt - 1); |
807 | } |
|
|
808 | |
1432 | |
|
|
1433 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1434 | } |
|
|
1435 | |
809 | void |
1436 | void |
810 | ev_timer_stop (struct ev_timer *w) |
1437 | ev_timer_stop (EV_P_ struct ev_timer *w) |
811 | { |
1438 | { |
812 | ev_clear_pending ((W)w); |
1439 | ev_clear_pending (EV_A_ (W)w); |
813 | if (!ev_is_active (w)) |
1440 | if (expect_false (!ev_is_active (w))) |
814 | return; |
1441 | return; |
815 | |
1442 | |
|
|
1443 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1444 | |
816 | if (w->active < timercnt--) |
1445 | if (expect_true (((W)w)->active < timercnt--)) |
817 | { |
1446 | { |
818 | timers [w->active - 1] = timers [timercnt]; |
1447 | timers [((W)w)->active - 1] = timers [timercnt]; |
819 | downheap ((WT *)timers, timercnt, w->active - 1); |
1448 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
820 | } |
1449 | } |
821 | |
1450 | |
822 | w->at = w->repeat; |
1451 | ((WT)w)->at -= mn_now; |
823 | |
1452 | |
824 | ev_stop ((W)w); |
1453 | ev_stop (EV_A_ (W)w); |
825 | } |
1454 | } |
826 | |
1455 | |
827 | void |
1456 | void |
828 | ev_timer_again (struct ev_timer *w) |
1457 | ev_timer_again (EV_P_ struct ev_timer *w) |
829 | { |
1458 | { |
830 | if (ev_is_active (w)) |
1459 | if (ev_is_active (w)) |
831 | { |
1460 | { |
832 | if (w->repeat) |
1461 | if (w->repeat) |
833 | { |
1462 | { |
834 | w->at = now + w->repeat; |
1463 | ((WT)w)->at = mn_now + w->repeat; |
835 | downheap ((WT *)timers, timercnt, w->active - 1); |
1464 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
836 | } |
1465 | } |
837 | else |
1466 | else |
838 | ev_timer_stop (w); |
1467 | ev_timer_stop (EV_A_ w); |
839 | } |
1468 | } |
840 | else if (w->repeat) |
1469 | else if (w->repeat) |
|
|
1470 | { |
|
|
1471 | w->at = w->repeat; |
841 | ev_timer_start (w); |
1472 | ev_timer_start (EV_A_ w); |
|
|
1473 | } |
842 | } |
1474 | } |
843 | |
1475 | |
|
|
1476 | #if EV_PERIODICS |
844 | void |
1477 | void |
845 | ev_periodic_start (struct ev_periodic *w) |
1478 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
846 | { |
1479 | { |
847 | if (ev_is_active (w)) |
1480 | if (expect_false (ev_is_active (w))) |
848 | return; |
1481 | return; |
849 | |
1482 | |
|
|
1483 | if (w->reschedule_cb) |
|
|
1484 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1485 | else if (w->interval) |
|
|
1486 | { |
850 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
1487 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
851 | |
|
|
852 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1488 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
853 | if (w->interval) |
|
|
854 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
1489 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1490 | } |
855 | |
1491 | |
856 | ev_start ((W)w, ++periodiccnt); |
1492 | ev_start (EV_A_ (W)w, ++periodiccnt); |
857 | array_needsize (periodics, periodicmax, periodiccnt, ); |
1493 | array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); |
858 | periodics [periodiccnt - 1] = w; |
1494 | periodics [periodiccnt - 1] = w; |
859 | upheap ((WT *)periodics, periodiccnt - 1); |
1495 | upheap ((WT *)periodics, periodiccnt - 1); |
860 | } |
|
|
861 | |
1496 | |
|
|
1497 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1498 | } |
|
|
1499 | |
862 | void |
1500 | void |
863 | ev_periodic_stop (struct ev_periodic *w) |
1501 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
864 | { |
1502 | { |
865 | ev_clear_pending ((W)w); |
1503 | ev_clear_pending (EV_A_ (W)w); |
866 | if (!ev_is_active (w)) |
1504 | if (expect_false (!ev_is_active (w))) |
867 | return; |
1505 | return; |
868 | |
1506 | |
|
|
1507 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1508 | |
869 | if (w->active < periodiccnt--) |
1509 | if (expect_true (((W)w)->active < periodiccnt--)) |
870 | { |
1510 | { |
871 | periodics [w->active - 1] = periodics [periodiccnt]; |
1511 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
872 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
1512 | adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
873 | } |
1513 | } |
874 | |
1514 | |
875 | ev_stop ((W)w); |
1515 | ev_stop (EV_A_ (W)w); |
876 | } |
1516 | } |
877 | |
1517 | |
878 | void |
1518 | void |
|
|
1519 | ev_periodic_again (EV_P_ struct ev_periodic *w) |
|
|
1520 | { |
|
|
1521 | /* TODO: use adjustheap and recalculation */ |
|
|
1522 | ev_periodic_stop (EV_A_ w); |
|
|
1523 | ev_periodic_start (EV_A_ w); |
|
|
1524 | } |
|
|
1525 | #endif |
|
|
1526 | |
|
|
1527 | void |
879 | ev_signal_start (struct ev_signal *w) |
1528 | ev_idle_start (EV_P_ struct ev_idle *w) |
880 | { |
1529 | { |
881 | if (ev_is_active (w)) |
1530 | if (expect_false (ev_is_active (w))) |
882 | return; |
1531 | return; |
883 | |
1532 | |
|
|
1533 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1534 | array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2); |
|
|
1535 | idles [idlecnt - 1] = w; |
|
|
1536 | } |
|
|
1537 | |
|
|
1538 | void |
|
|
1539 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1540 | { |
|
|
1541 | ev_clear_pending (EV_A_ (W)w); |
|
|
1542 | if (expect_false (!ev_is_active (w))) |
|
|
1543 | return; |
|
|
1544 | |
|
|
1545 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
|
|
1546 | ev_stop (EV_A_ (W)w); |
|
|
1547 | } |
|
|
1548 | |
|
|
1549 | void |
|
|
1550 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1551 | { |
|
|
1552 | if (expect_false (ev_is_active (w))) |
|
|
1553 | return; |
|
|
1554 | |
|
|
1555 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1556 | array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
|
|
1557 | prepares [preparecnt - 1] = w; |
|
|
1558 | } |
|
|
1559 | |
|
|
1560 | void |
|
|
1561 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1562 | { |
|
|
1563 | ev_clear_pending (EV_A_ (W)w); |
|
|
1564 | if (expect_false (!ev_is_active (w))) |
|
|
1565 | return; |
|
|
1566 | |
|
|
1567 | prepares [((W)w)->active - 1] = prepares [--preparecnt]; |
|
|
1568 | ev_stop (EV_A_ (W)w); |
|
|
1569 | } |
|
|
1570 | |
|
|
1571 | void |
|
|
1572 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1573 | { |
|
|
1574 | if (expect_false (ev_is_active (w))) |
|
|
1575 | return; |
|
|
1576 | |
|
|
1577 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1578 | array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
1579 | checks [checkcnt - 1] = w; |
|
|
1580 | } |
|
|
1581 | |
|
|
1582 | void |
|
|
1583 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1584 | { |
|
|
1585 | ev_clear_pending (EV_A_ (W)w); |
|
|
1586 | if (expect_false (!ev_is_active (w))) |
|
|
1587 | return; |
|
|
1588 | |
|
|
1589 | checks [((W)w)->active - 1] = checks [--checkcnt]; |
|
|
1590 | ev_stop (EV_A_ (W)w); |
|
|
1591 | } |
|
|
1592 | |
|
|
1593 | #ifndef SA_RESTART |
|
|
1594 | # define SA_RESTART 0 |
|
|
1595 | #endif |
|
|
1596 | |
|
|
1597 | void |
|
|
1598 | ev_signal_start (EV_P_ struct ev_signal *w) |
|
|
1599 | { |
|
|
1600 | #if EV_MULTIPLICITY |
|
|
1601 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1602 | #endif |
|
|
1603 | if (expect_false (ev_is_active (w))) |
|
|
1604 | return; |
|
|
1605 | |
884 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
1606 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
885 | |
1607 | |
886 | ev_start ((W)w, 1); |
1608 | ev_start (EV_A_ (W)w, 1); |
887 | array_needsize (signals, signalmax, w->signum, signals_init); |
1609 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
888 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1610 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
889 | |
1611 | |
890 | if (!w->next) |
1612 | if (!((WL)w)->next) |
891 | { |
1613 | { |
|
|
1614 | #if _WIN32 |
|
|
1615 | signal (w->signum, sighandler); |
|
|
1616 | #else |
892 | struct sigaction sa; |
1617 | struct sigaction sa; |
893 | sa.sa_handler = sighandler; |
1618 | sa.sa_handler = sighandler; |
894 | sigfillset (&sa.sa_mask); |
1619 | sigfillset (&sa.sa_mask); |
895 | sa.sa_flags = 0; |
1620 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
896 | sigaction (w->signum, &sa, 0); |
1621 | sigaction (w->signum, &sa, 0); |
|
|
1622 | #endif |
897 | } |
1623 | } |
898 | } |
1624 | } |
899 | |
1625 | |
900 | void |
1626 | void |
901 | ev_signal_stop (struct ev_signal *w) |
1627 | ev_signal_stop (EV_P_ struct ev_signal *w) |
902 | { |
1628 | { |
903 | ev_clear_pending ((W)w); |
1629 | ev_clear_pending (EV_A_ (W)w); |
904 | if (!ev_is_active (w)) |
1630 | if (expect_false (!ev_is_active (w))) |
905 | return; |
1631 | return; |
906 | |
1632 | |
907 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1633 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
908 | ev_stop ((W)w); |
1634 | ev_stop (EV_A_ (W)w); |
909 | |
1635 | |
910 | if (!signals [w->signum - 1].head) |
1636 | if (!signals [w->signum - 1].head) |
911 | signal (w->signum, SIG_DFL); |
1637 | signal (w->signum, SIG_DFL); |
912 | } |
1638 | } |
913 | |
1639 | |
914 | void |
1640 | void |
915 | ev_idle_start (struct ev_idle *w) |
1641 | ev_child_start (EV_P_ struct ev_child *w) |
916 | { |
1642 | { |
|
|
1643 | #if EV_MULTIPLICITY |
|
|
1644 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1645 | #endif |
917 | if (ev_is_active (w)) |
1646 | if (expect_false (ev_is_active (w))) |
918 | return; |
1647 | return; |
919 | |
1648 | |
920 | ev_start ((W)w, ++idlecnt); |
1649 | ev_start (EV_A_ (W)w, 1); |
921 | array_needsize (idles, idlemax, idlecnt, ); |
1650 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
922 | idles [idlecnt - 1] = w; |
|
|
923 | } |
1651 | } |
924 | |
1652 | |
925 | void |
1653 | void |
926 | ev_idle_stop (struct ev_idle *w) |
1654 | ev_child_stop (EV_P_ struct ev_child *w) |
927 | { |
1655 | { |
928 | ev_clear_pending ((W)w); |
1656 | ev_clear_pending (EV_A_ (W)w); |
929 | if (ev_is_active (w)) |
1657 | if (expect_false (!ev_is_active (w))) |
930 | return; |
1658 | return; |
931 | |
1659 | |
932 | idles [w->active - 1] = idles [--idlecnt]; |
|
|
933 | ev_stop ((W)w); |
|
|
934 | } |
|
|
935 | |
|
|
936 | void |
|
|
937 | ev_prepare_start (struct ev_prepare *w) |
|
|
938 | { |
|
|
939 | if (ev_is_active (w)) |
|
|
940 | return; |
|
|
941 | |
|
|
942 | ev_start ((W)w, ++preparecnt); |
|
|
943 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
944 | prepares [preparecnt - 1] = w; |
|
|
945 | } |
|
|
946 | |
|
|
947 | void |
|
|
948 | ev_prepare_stop (struct ev_prepare *w) |
|
|
949 | { |
|
|
950 | ev_clear_pending ((W)w); |
|
|
951 | if (ev_is_active (w)) |
|
|
952 | return; |
|
|
953 | |
|
|
954 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
955 | ev_stop ((W)w); |
|
|
956 | } |
|
|
957 | |
|
|
958 | void |
|
|
959 | ev_check_start (struct ev_check *w) |
|
|
960 | { |
|
|
961 | if (ev_is_active (w)) |
|
|
962 | return; |
|
|
963 | |
|
|
964 | ev_start ((W)w, ++checkcnt); |
|
|
965 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
966 | checks [checkcnt - 1] = w; |
|
|
967 | } |
|
|
968 | |
|
|
969 | void |
|
|
970 | ev_check_stop (struct ev_check *w) |
|
|
971 | { |
|
|
972 | ev_clear_pending ((W)w); |
|
|
973 | if (ev_is_active (w)) |
|
|
974 | return; |
|
|
975 | |
|
|
976 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
977 | ev_stop ((W)w); |
|
|
978 | } |
|
|
979 | |
|
|
980 | void |
|
|
981 | ev_child_start (struct ev_child *w) |
|
|
982 | { |
|
|
983 | if (ev_is_active (w)) |
|
|
984 | return; |
|
|
985 | |
|
|
986 | ev_start ((W)w, 1); |
|
|
987 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
988 | } |
|
|
989 | |
|
|
990 | void |
|
|
991 | ev_child_stop (struct ev_child *w) |
|
|
992 | { |
|
|
993 | ev_clear_pending ((W)w); |
|
|
994 | if (ev_is_active (w)) |
|
|
995 | return; |
|
|
996 | |
|
|
997 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
1660 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
998 | ev_stop ((W)w); |
1661 | ev_stop (EV_A_ (W)w); |
999 | } |
1662 | } |
1000 | |
1663 | |
1001 | /*****************************************************************************/ |
1664 | /*****************************************************************************/ |
1002 | |
1665 | |
1003 | struct ev_once |
1666 | struct ev_once |
… | |
… | |
1007 | void (*cb)(int revents, void *arg); |
1670 | void (*cb)(int revents, void *arg); |
1008 | void *arg; |
1671 | void *arg; |
1009 | }; |
1672 | }; |
1010 | |
1673 | |
1011 | static void |
1674 | static void |
1012 | once_cb (struct ev_once *once, int revents) |
1675 | once_cb (EV_P_ struct ev_once *once, int revents) |
1013 | { |
1676 | { |
1014 | void (*cb)(int revents, void *arg) = once->cb; |
1677 | void (*cb)(int revents, void *arg) = once->cb; |
1015 | void *arg = once->arg; |
1678 | void *arg = once->arg; |
1016 | |
1679 | |
1017 | ev_io_stop (&once->io); |
1680 | ev_io_stop (EV_A_ &once->io); |
1018 | ev_timer_stop (&once->to); |
1681 | ev_timer_stop (EV_A_ &once->to); |
1019 | free (once); |
1682 | ev_free (once); |
1020 | |
1683 | |
1021 | cb (revents, arg); |
1684 | cb (revents, arg); |
1022 | } |
1685 | } |
1023 | |
1686 | |
1024 | static void |
1687 | static void |
1025 | once_cb_io (struct ev_io *w, int revents) |
1688 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
1026 | { |
1689 | { |
1027 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1690 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1028 | } |
1691 | } |
1029 | |
1692 | |
1030 | static void |
1693 | static void |
1031 | once_cb_to (struct ev_timer *w, int revents) |
1694 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
1032 | { |
1695 | { |
1033 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1696 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1034 | } |
1697 | } |
1035 | |
1698 | |
1036 | void |
1699 | void |
1037 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1700 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1038 | { |
1701 | { |
1039 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
1702 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
1040 | |
1703 | |
1041 | if (!once) |
1704 | if (expect_false (!once)) |
|
|
1705 | { |
1042 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
1706 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
1043 | else |
1707 | return; |
1044 | { |
1708 | } |
|
|
1709 | |
1045 | once->cb = cb; |
1710 | once->cb = cb; |
1046 | once->arg = arg; |
1711 | once->arg = arg; |
1047 | |
1712 | |
1048 | ev_watcher_init (&once->io, once_cb_io); |
1713 | ev_init (&once->io, once_cb_io); |
1049 | if (fd >= 0) |
1714 | if (fd >= 0) |
1050 | { |
1715 | { |
1051 | ev_io_set (&once->io, fd, events); |
1716 | ev_io_set (&once->io, fd, events); |
1052 | ev_io_start (&once->io); |
1717 | ev_io_start (EV_A_ &once->io); |
1053 | } |
1718 | } |
1054 | |
1719 | |
1055 | ev_watcher_init (&once->to, once_cb_to); |
1720 | ev_init (&once->to, once_cb_to); |
1056 | if (timeout >= 0.) |
1721 | if (timeout >= 0.) |
1057 | { |
1722 | { |
1058 | ev_timer_set (&once->to, timeout, 0.); |
1723 | ev_timer_set (&once->to, timeout, 0.); |
1059 | ev_timer_start (&once->to); |
1724 | ev_timer_start (EV_A_ &once->to); |
1060 | } |
|
|
1061 | } |
|
|
1062 | } |
|
|
1063 | |
|
|
1064 | /*****************************************************************************/ |
|
|
1065 | |
|
|
1066 | #if 0 |
|
|
1067 | |
|
|
1068 | struct ev_io wio; |
|
|
1069 | |
|
|
1070 | static void |
|
|
1071 | sin_cb (struct ev_io *w, int revents) |
|
|
1072 | { |
|
|
1073 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
1074 | } |
|
|
1075 | |
|
|
1076 | static void |
|
|
1077 | ocb (struct ev_timer *w, int revents) |
|
|
1078 | { |
|
|
1079 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
1080 | ev_timer_stop (w); |
|
|
1081 | ev_timer_start (w); |
|
|
1082 | } |
|
|
1083 | |
|
|
1084 | static void |
|
|
1085 | scb (struct ev_signal *w, int revents) |
|
|
1086 | { |
|
|
1087 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
1088 | ev_io_stop (&wio); |
|
|
1089 | ev_io_start (&wio); |
|
|
1090 | } |
|
|
1091 | |
|
|
1092 | static void |
|
|
1093 | gcb (struct ev_signal *w, int revents) |
|
|
1094 | { |
|
|
1095 | fprintf (stderr, "generic %x\n", revents); |
|
|
1096 | |
|
|
1097 | } |
|
|
1098 | |
|
|
1099 | int main (void) |
|
|
1100 | { |
|
|
1101 | ev_init (0); |
|
|
1102 | |
|
|
1103 | ev_io_init (&wio, sin_cb, 0, EV_READ); |
|
|
1104 | ev_io_start (&wio); |
|
|
1105 | |
|
|
1106 | struct ev_timer t[10000]; |
|
|
1107 | |
|
|
1108 | #if 0 |
|
|
1109 | int i; |
|
|
1110 | for (i = 0; i < 10000; ++i) |
|
|
1111 | { |
1725 | } |
1112 | struct ev_timer *w = t + i; |
|
|
1113 | ev_watcher_init (w, ocb, i); |
|
|
1114 | ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
1115 | ev_timer_start (w); |
|
|
1116 | if (drand48 () < 0.5) |
|
|
1117 | ev_timer_stop (w); |
|
|
1118 | } |
|
|
1119 | #endif |
|
|
1120 | |
|
|
1121 | struct ev_timer t1; |
|
|
1122 | ev_timer_init (&t1, ocb, 5, 10); |
|
|
1123 | ev_timer_start (&t1); |
|
|
1124 | |
|
|
1125 | struct ev_signal sig; |
|
|
1126 | ev_signal_init (&sig, scb, SIGQUIT); |
|
|
1127 | ev_signal_start (&sig); |
|
|
1128 | |
|
|
1129 | struct ev_check cw; |
|
|
1130 | ev_check_init (&cw, gcb); |
|
|
1131 | ev_check_start (&cw); |
|
|
1132 | |
|
|
1133 | struct ev_idle iw; |
|
|
1134 | ev_idle_init (&iw, gcb); |
|
|
1135 | ev_idle_start (&iw); |
|
|
1136 | |
|
|
1137 | ev_loop (0); |
|
|
1138 | |
|
|
1139 | return 0; |
|
|
1140 | } |
1726 | } |
1141 | |
1727 | |
|
|
1728 | #ifdef __cplusplus |
|
|
1729 | } |
1142 | #endif |
1730 | #endif |
1143 | |
1731 | |
1144 | |
|
|
1145 | |
|
|
1146 | |
|
|