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1 | /* |
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2 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions are |
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7 | * met: |
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8 | * |
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9 | * * Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * |
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12 | * * Redistributions in binary form must reproduce the above |
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13 | * copyright notice, this list of conditions and the following |
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14 | * disclaimer in the documentation and/or other materials provided |
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15 | * with the distribution. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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18 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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19 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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20 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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21 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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22 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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23 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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28 | */ |
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29 | #if EV_USE_CONFIG_H |
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30 | # include "config.h" |
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31 | #endif |
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32 | |
1 | #include <math.h> |
33 | #include <math.h> |
2 | #include <stdlib.h> |
34 | #include <stdlib.h> |
3 | #include <unistd.h> |
35 | #include <unistd.h> |
4 | #include <fcntl.h> |
36 | #include <fcntl.h> |
5 | #include <signal.h> |
37 | #include <signal.h> |
… | |
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7 | |
39 | |
8 | #include <stdio.h> |
40 | #include <stdio.h> |
9 | |
41 | |
10 | #include <assert.h> |
42 | #include <assert.h> |
11 | #include <errno.h> |
43 | #include <errno.h> |
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44 | #include <sys/types.h> |
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45 | #include <sys/wait.h> |
12 | #include <sys/time.h> |
46 | #include <sys/time.h> |
13 | #include <time.h> |
47 | #include <time.h> |
14 | |
48 | |
15 | #define HAVE_EPOLL 1 |
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16 | |
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17 | #ifndef HAVE_MONOTONIC |
49 | #ifndef EV_USE_MONOTONIC |
18 | # ifdef CLOCK_MONOTONIC |
50 | # ifdef CLOCK_MONOTONIC |
19 | # define HAVE_MONOTONIC 1 |
51 | # define EV_USE_MONOTONIC 1 |
20 | # endif |
52 | # endif |
21 | #endif |
53 | #endif |
22 | |
54 | |
23 | #ifndef HAVE_SELECT |
55 | #ifndef EV_USE_SELECT |
24 | # define HAVE_SELECT 1 |
56 | # define EV_USE_SELECT 1 |
25 | #endif |
57 | #endif |
26 | |
58 | |
27 | #ifndef HAVE_EPOLL |
59 | #ifndef EV_USE_EPOLL |
28 | # define HAVE_EPOLL 0 |
60 | # define EV_USE_EPOLL 0 |
29 | #endif |
61 | #endif |
30 | |
62 | |
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63 | #ifndef CLOCK_REALTIME |
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64 | # define EV_USE_REALTIME 0 |
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65 | #endif |
31 | #ifndef HAVE_REALTIME |
66 | #ifndef EV_USE_REALTIME |
32 | # define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
67 | # define EV_USE_REALTIME 1 /* posix requirement, but might be slower */ |
33 | #endif |
68 | #endif |
34 | |
69 | |
35 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
70 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
36 | #define MAX_BLOCKTIME 60. |
71 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detetc time jumps) */ |
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72 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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73 | #define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ |
37 | |
74 | |
38 | #include "ev.h" |
75 | #include "ev.h" |
39 | |
76 | |
40 | typedef struct ev_watcher *W; |
77 | typedef struct ev_watcher *W; |
41 | typedef struct ev_watcher_list *WL; |
78 | typedef struct ev_watcher_list *WL; |
… | |
… | |
54 | /*****************************************************************************/ |
91 | /*****************************************************************************/ |
55 | |
92 | |
56 | ev_tstamp |
93 | ev_tstamp |
57 | ev_time (void) |
94 | ev_time (void) |
58 | { |
95 | { |
59 | #if HAVE_REALTIME |
96 | #if EV_USE_REALTIME |
60 | struct timespec ts; |
97 | struct timespec ts; |
61 | clock_gettime (CLOCK_REALTIME, &ts); |
98 | clock_gettime (CLOCK_REALTIME, &ts); |
62 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
99 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
63 | #else |
100 | #else |
64 | struct timeval tv; |
101 | struct timeval tv; |
… | |
… | |
68 | } |
105 | } |
69 | |
106 | |
70 | static ev_tstamp |
107 | static ev_tstamp |
71 | get_clock (void) |
108 | get_clock (void) |
72 | { |
109 | { |
73 | #if HAVE_MONOTONIC |
110 | #if EV_USE_MONOTONIC |
74 | if (have_monotonic) |
111 | if (have_monotonic) |
75 | { |
112 | { |
76 | struct timespec ts; |
113 | struct timespec ts; |
77 | clock_gettime (CLOCK_MONOTONIC, &ts); |
114 | clock_gettime (CLOCK_MONOTONIC, &ts); |
78 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
115 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
… | |
… | |
80 | #endif |
117 | #endif |
81 | |
118 | |
82 | return ev_time (); |
119 | return ev_time (); |
83 | } |
120 | } |
84 | |
121 | |
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122 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
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123 | |
85 | #define array_needsize(base,cur,cnt,init) \ |
124 | #define array_needsize(base,cur,cnt,init) \ |
86 | if ((cnt) > cur) \ |
125 | if ((cnt) > cur) \ |
87 | { \ |
126 | { \ |
88 | int newcnt = cur ? cur << 1 : 16; \ |
127 | int newcnt = cur; \ |
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128 | do \ |
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129 | { \ |
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130 | newcnt = array_roundsize (base, newcnt << 1); \ |
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131 | } \ |
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132 | while ((cnt) > newcnt); \ |
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133 | \ |
89 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
134 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
90 | init (base + cur, newcnt - cur); \ |
135 | init (base + cur, newcnt - cur); \ |
91 | cur = newcnt; \ |
136 | cur = newcnt; \ |
92 | } |
137 | } |
93 | |
138 | |
94 | /*****************************************************************************/ |
139 | /*****************************************************************************/ |
95 | |
140 | |
96 | typedef struct |
141 | typedef struct |
97 | { |
142 | { |
98 | struct ev_io *head; |
143 | struct ev_io *head; |
99 | unsigned char wev, rev; /* want, received event set */ |
144 | int events; |
100 | } ANFD; |
145 | } ANFD; |
101 | |
146 | |
102 | static ANFD *anfds; |
147 | static ANFD *anfds; |
103 | static int anfdmax; |
148 | static int anfdmax; |
104 | |
149 | |
105 | static int *fdchanges; |
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106 | static int fdchangemax, fdchangecnt; |
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107 | |
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108 | static void |
150 | static void |
109 | anfds_init (ANFD *base, int count) |
151 | anfds_init (ANFD *base, int count) |
110 | { |
152 | { |
111 | while (count--) |
153 | while (count--) |
112 | { |
154 | { |
113 | base->head = 0; |
155 | base->head = 0; |
114 | base->wev = base->rev = EV_NONE; |
156 | base->events = EV_NONE; |
115 | ++base; |
157 | ++base; |
116 | } |
158 | } |
117 | } |
159 | } |
118 | |
160 | |
119 | typedef struct |
161 | typedef struct |
… | |
… | |
126 | static int pendingmax, pendingcnt; |
168 | static int pendingmax, pendingcnt; |
127 | |
169 | |
128 | static void |
170 | static void |
129 | event (W w, int events) |
171 | event (W w, int events) |
130 | { |
172 | { |
131 | if (w->active) |
173 | if (w->pending) |
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174 | { |
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175 | pendings [w->pending - 1].events |= events; |
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176 | return; |
132 | { |
177 | } |
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178 | |
133 | w->pending = ++pendingcnt; |
179 | w->pending = ++pendingcnt; |
134 | array_needsize (pendings, pendingmax, pendingcnt, ); |
180 | array_needsize (pendings, pendingmax, pendingcnt, ); |
135 | pendings [pendingcnt - 1].w = w; |
181 | pendings [pendingcnt - 1].w = w; |
136 | pendings [pendingcnt - 1].events = events; |
182 | pendings [pendingcnt - 1].events = events; |
137 | } |
183 | } |
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184 | |
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185 | static void |
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186 | queue_events (W *events, int eventcnt, int type) |
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187 | { |
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188 | int i; |
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189 | |
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190 | for (i = 0; i < eventcnt; ++i) |
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191 | event (events [i], type); |
138 | } |
192 | } |
139 | |
193 | |
140 | static void |
194 | static void |
141 | fd_event (int fd, int events) |
195 | fd_event (int fd, int events) |
142 | { |
196 | { |
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150 | if (ev) |
204 | if (ev) |
151 | event ((W)w, ev); |
205 | event ((W)w, ev); |
152 | } |
206 | } |
153 | } |
207 | } |
154 | |
208 | |
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209 | /*****************************************************************************/ |
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210 | |
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211 | static int *fdchanges; |
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212 | static int fdchangemax, fdchangecnt; |
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213 | |
155 | static void |
214 | static void |
156 | queue_events (W *events, int eventcnt, int type) |
215 | fd_reify (void) |
157 | { |
216 | { |
158 | int i; |
217 | int i; |
159 | |
218 | |
160 | for (i = 0; i < eventcnt; ++i) |
219 | for (i = 0; i < fdchangecnt; ++i) |
161 | event (events [i], type); |
220 | { |
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221 | int fd = fdchanges [i]; |
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222 | ANFD *anfd = anfds + fd; |
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223 | struct ev_io *w; |
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224 | |
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225 | int events = 0; |
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226 | |
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227 | for (w = anfd->head; w; w = w->next) |
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228 | events |= w->events; |
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229 | |
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230 | anfd->events &= ~EV_REIFY; |
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231 | |
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232 | if (anfd->events != events) |
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233 | { |
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234 | method_modify (fd, anfd->events, events); |
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235 | anfd->events = events; |
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236 | } |
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237 | } |
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238 | |
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239 | fdchangecnt = 0; |
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240 | } |
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241 | |
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242 | static void |
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243 | fd_change (int fd) |
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244 | { |
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245 | if (anfds [fd].events & EV_REIFY || fdchangecnt < 0) |
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246 | return; |
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247 | |
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248 | anfds [fd].events |= EV_REIFY; |
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249 | |
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250 | ++fdchangecnt; |
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251 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
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252 | fdchanges [fdchangecnt - 1] = fd; |
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253 | } |
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254 | |
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255 | /* called on EBADF to verify fds */ |
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256 | static void |
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257 | fd_recheck (void) |
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258 | { |
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259 | int fd; |
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260 | |
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261 | for (fd = 0; fd < anfdmax; ++fd) |
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262 | if (anfds [fd].events) |
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263 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
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264 | while (anfds [fd].head) |
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265 | { |
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266 | ev_io_stop (anfds [fd].head); |
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267 | event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT); |
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268 | } |
162 | } |
269 | } |
163 | |
270 | |
164 | /*****************************************************************************/ |
271 | /*****************************************************************************/ |
165 | |
272 | |
166 | static struct ev_timer **timers; |
273 | static struct ev_timer **timers; |
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275 | |
382 | |
276 | /* rather than sort out wether we really need nb, set it */ |
383 | /* rather than sort out wether we really need nb, set it */ |
277 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
384 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
278 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
385 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
279 | |
386 | |
280 | evio_set (&sigev, sigpipe [0], EV_READ); |
387 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
281 | evio_start (&sigev); |
388 | ev_io_start (&sigev); |
282 | } |
389 | } |
283 | |
390 | |
284 | /*****************************************************************************/ |
391 | /*****************************************************************************/ |
285 | |
392 | |
286 | static struct ev_idle **idles; |
393 | static struct ev_idle **idles; |
287 | static int idlemax, idlecnt; |
394 | static int idlemax, idlecnt; |
288 | |
395 | |
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396 | static struct ev_prepare **prepares; |
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397 | static int preparemax, preparecnt; |
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398 | |
289 | static struct ev_check **checks; |
399 | static struct ev_check **checks; |
290 | static int checkmax, checkcnt; |
400 | static int checkmax, checkcnt; |
291 | |
401 | |
292 | /*****************************************************************************/ |
402 | /*****************************************************************************/ |
293 | |
403 | |
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404 | static struct ev_child *childs [PID_HASHSIZE]; |
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405 | static struct ev_signal childev; |
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406 | |
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407 | #ifndef WCONTINUED |
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408 | # define WCONTINUED 0 |
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409 | #endif |
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410 | |
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411 | static void |
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412 | childcb (struct ev_signal *sw, int revents) |
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413 | { |
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414 | struct ev_child *w; |
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415 | int pid, status; |
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416 | |
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417 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
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418 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
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419 | if (w->pid == pid || w->pid == -1) |
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420 | { |
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421 | w->status = status; |
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422 | event ((W)w, EV_CHILD); |
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423 | } |
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424 | } |
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425 | |
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426 | /*****************************************************************************/ |
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427 | |
294 | #if HAVE_EPOLL |
428 | #if EV_USE_EPOLL |
295 | # include "ev_epoll.c" |
429 | # include "ev_epoll.c" |
296 | #endif |
430 | #endif |
297 | #if HAVE_SELECT |
431 | #if EV_USE_SELECT |
298 | # include "ev_select.c" |
432 | # include "ev_select.c" |
299 | #endif |
433 | #endif |
300 | |
434 | |
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435 | int |
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436 | ev_version_major (void) |
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437 | { |
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438 | return EV_VERSION_MAJOR; |
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439 | } |
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440 | |
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441 | int |
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442 | ev_version_minor (void) |
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443 | { |
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444 | return EV_VERSION_MINOR; |
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445 | } |
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446 | |
301 | int ev_init (int flags) |
447 | int ev_init (int flags) |
302 | { |
448 | { |
303 | #if HAVE_MONOTONIC |
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304 | { |
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305 | struct timespec ts; |
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306 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
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307 | have_monotonic = 1; |
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308 | } |
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309 | #endif |
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310 | |
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311 | ev_now = ev_time (); |
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312 | now = get_clock (); |
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313 | diff = ev_now - now; |
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314 | |
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315 | if (pipe (sigpipe)) |
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316 | return 0; |
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317 | |
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318 | ev_method = EVMETHOD_NONE; |
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319 | #if HAVE_EPOLL |
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320 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
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321 | #endif |
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322 | #if HAVE_SELECT |
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323 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
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324 | #endif |
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325 | |
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326 | if (ev_method) |
449 | if (!ev_method) |
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450 | { |
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451 | #if EV_USE_MONOTONIC |
327 | { |
452 | { |
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453 | struct timespec ts; |
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454 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
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455 | have_monotonic = 1; |
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456 | } |
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457 | #endif |
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458 | |
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459 | ev_now = ev_time (); |
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460 | now = get_clock (); |
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461 | diff = ev_now - now; |
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462 | |
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463 | if (pipe (sigpipe)) |
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464 | return 0; |
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465 | |
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466 | ev_method = EVMETHOD_NONE; |
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467 | #if EV_USE_EPOLL |
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468 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
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469 | #endif |
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470 | #if EV_USE_SELECT |
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471 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
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472 | #endif |
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473 | |
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474 | if (ev_method) |
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475 | { |
328 | evw_init (&sigev, sigcb); |
476 | ev_watcher_init (&sigev, sigcb); |
329 | siginit (); |
477 | siginit (); |
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478 | |
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479 | ev_signal_init (&childev, childcb, SIGCHLD); |
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480 | ev_signal_start (&childev); |
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481 | } |
330 | } |
482 | } |
331 | |
483 | |
332 | return ev_method; |
484 | return ev_method; |
333 | } |
485 | } |
334 | |
486 | |
335 | /*****************************************************************************/ |
487 | /*****************************************************************************/ |
336 | |
488 | |
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489 | void |
337 | void ev_prefork (void) |
490 | ev_prefork (void) |
338 | { |
491 | { |
339 | /* nop */ |
492 | /* nop */ |
340 | } |
493 | } |
341 | |
494 | |
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495 | void |
342 | void ev_postfork_parent (void) |
496 | ev_postfork_parent (void) |
343 | { |
497 | { |
344 | /* nop */ |
498 | /* nop */ |
345 | } |
499 | } |
346 | |
500 | |
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501 | void |
347 | void ev_postfork_child (void) |
502 | ev_postfork_child (void) |
348 | { |
503 | { |
349 | #if HAVE_EPOLL |
504 | #if EV_USE_EPOLL |
350 | if (ev_method == EVMETHOD_EPOLL) |
505 | if (ev_method == EVMETHOD_EPOLL) |
351 | epoll_postfork_child (); |
506 | epoll_postfork_child (); |
352 | #endif |
507 | #endif |
353 | |
508 | |
354 | evio_stop (&sigev); |
509 | ev_io_stop (&sigev); |
355 | close (sigpipe [0]); |
510 | close (sigpipe [0]); |
356 | close (sigpipe [1]); |
511 | close (sigpipe [1]); |
357 | pipe (sigpipe); |
512 | pipe (sigpipe); |
358 | siginit (); |
513 | siginit (); |
359 | } |
514 | } |
360 | |
515 | |
361 | /*****************************************************************************/ |
516 | /*****************************************************************************/ |
362 | |
517 | |
363 | static void |
518 | static void |
364 | fd_reify (void) |
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365 | { |
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366 | int i; |
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367 | |
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368 | for (i = 0; i < fdchangecnt; ++i) |
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369 | { |
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370 | int fd = fdchanges [i]; |
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371 | ANFD *anfd = anfds + fd; |
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372 | struct ev_io *w; |
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373 | |
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374 | int wev = 0; |
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375 | |
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376 | for (w = anfd->head; w; w = w->next) |
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377 | wev |= w->events; |
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378 | |
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379 | if (anfd->wev != wev) |
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380 | { |
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381 | method_modify (fd, anfd->wev, wev); |
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382 | anfd->wev = wev; |
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383 | } |
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384 | } |
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385 | |
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386 | fdchangecnt = 0; |
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387 | } |
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388 | |
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389 | static void |
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390 | call_pending () |
519 | call_pending (void) |
391 | { |
520 | { |
392 | int i; |
521 | while (pendingcnt) |
393 | |
|
|
394 | for (i = 0; i < pendingcnt; ++i) |
|
|
395 | { |
522 | { |
396 | ANPENDING *p = pendings + i; |
523 | ANPENDING *p = pendings + --pendingcnt; |
397 | |
524 | |
398 | if (p->w) |
525 | if (p->w) |
399 | { |
526 | { |
400 | p->w->pending = 0; |
527 | p->w->pending = 0; |
401 | p->w->cb (p->w, p->events); |
528 | p->w->cb (p->w, p->events); |
402 | } |
529 | } |
403 | } |
530 | } |
404 | |
|
|
405 | pendingcnt = 0; |
|
|
406 | } |
531 | } |
407 | |
532 | |
408 | static void |
533 | static void |
409 | timers_reify () |
534 | timers_reify (void) |
410 | { |
535 | { |
411 | while (timercnt && timers [0]->at <= now) |
536 | while (timercnt && timers [0]->at <= now) |
412 | { |
537 | { |
413 | struct ev_timer *w = timers [0]; |
538 | struct ev_timer *w = timers [0]; |
414 | |
|
|
415 | event ((W)w, EV_TIMEOUT); |
|
|
416 | |
539 | |
417 | /* first reschedule or stop timer */ |
540 | /* first reschedule or stop timer */ |
418 | if (w->repeat) |
541 | if (w->repeat) |
419 | { |
542 | { |
420 | w->at = now + w->repeat; |
543 | w->at = now + w->repeat; |
421 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
544 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
422 | downheap ((WT *)timers, timercnt, 0); |
545 | downheap ((WT *)timers, timercnt, 0); |
423 | } |
546 | } |
424 | else |
547 | else |
425 | evtimer_stop (w); /* nonrepeating: stop timer */ |
548 | ev_timer_stop (w); /* nonrepeating: stop timer */ |
426 | } |
|
|
427 | } |
|
|
428 | |
549 | |
|
|
550 | event ((W)w, EV_TIMEOUT); |
|
|
551 | } |
|
|
552 | } |
|
|
553 | |
429 | static void |
554 | static void |
430 | periodics_reify () |
555 | periodics_reify (void) |
431 | { |
556 | { |
432 | while (periodiccnt && periodics [0]->at <= ev_now) |
557 | while (periodiccnt && periodics [0]->at <= ev_now) |
433 | { |
558 | { |
434 | struct ev_periodic *w = periodics [0]; |
559 | struct ev_periodic *w = periodics [0]; |
435 | |
560 | |
… | |
… | |
439 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
564 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
440 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
565 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
441 | downheap ((WT *)periodics, periodiccnt, 0); |
566 | downheap ((WT *)periodics, periodiccnt, 0); |
442 | } |
567 | } |
443 | else |
568 | else |
444 | evperiodic_stop (w); /* nonrepeating: stop timer */ |
569 | ev_periodic_stop (w); /* nonrepeating: stop timer */ |
445 | |
570 | |
446 | event ((W)w, EV_TIMEOUT); |
571 | event ((W)w, EV_TIMEOUT); |
447 | } |
572 | } |
448 | } |
573 | } |
449 | |
574 | |
… | |
… | |
461 | { |
586 | { |
462 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
587 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
463 | |
588 | |
464 | if (fabs (diff) >= 1e-4) |
589 | if (fabs (diff) >= 1e-4) |
465 | { |
590 | { |
466 | evperiodic_stop (w); |
591 | ev_periodic_stop (w); |
467 | evperiodic_start (w); |
592 | ev_periodic_start (w); |
468 | |
593 | |
469 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
594 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
470 | } |
595 | } |
471 | } |
596 | } |
472 | } |
597 | } |
473 | } |
598 | } |
474 | |
599 | |
475 | static void |
600 | static void |
476 | time_update () |
601 | time_update (void) |
477 | { |
602 | { |
478 | int i; |
603 | int i; |
479 | |
604 | |
480 | ev_now = ev_time (); |
605 | ev_now = ev_time (); |
481 | |
606 | |
… | |
… | |
515 | int ev_loop_done; |
640 | int ev_loop_done; |
516 | |
641 | |
517 | void ev_loop (int flags) |
642 | void ev_loop (int flags) |
518 | { |
643 | { |
519 | double block; |
644 | double block; |
520 | ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0; |
645 | ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
521 | |
|
|
522 | if (checkcnt) |
|
|
523 | { |
|
|
524 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
|
|
525 | call_pending (); |
|
|
526 | } |
|
|
527 | |
646 | |
528 | do |
647 | do |
529 | { |
648 | { |
|
|
649 | /* queue check watchers (and execute them) */ |
|
|
650 | if (preparecnt) |
|
|
651 | { |
|
|
652 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
|
|
653 | call_pending (); |
|
|
654 | } |
|
|
655 | |
530 | /* update fd-related kernel structures */ |
656 | /* update fd-related kernel structures */ |
531 | fd_reify (); |
657 | fd_reify (); |
532 | |
658 | |
533 | /* calculate blocking time */ |
659 | /* calculate blocking time */ |
534 | |
660 | |
535 | /* we only need this for !monotonic clock, but as we always have timers, we just calculate it every time */ |
661 | /* we only need this for !monotonic clockor timers, but as we basically |
|
|
662 | always have timers, we just calculate it always */ |
536 | ev_now = ev_time (); |
663 | ev_now = ev_time (); |
537 | |
664 | |
538 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
665 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
539 | block = 0.; |
666 | block = 0.; |
540 | else |
667 | else |
… | |
… | |
560 | |
687 | |
561 | /* update ev_now, do magic */ |
688 | /* update ev_now, do magic */ |
562 | time_update (); |
689 | time_update (); |
563 | |
690 | |
564 | /* queue pending timers and reschedule them */ |
691 | /* queue pending timers and reschedule them */ |
|
|
692 | timers_reify (); /* relative timers called last */ |
565 | periodics_reify (); /* absolute timers first */ |
693 | periodics_reify (); /* absolute timers called first */ |
566 | timers_reify (); /* relative timers second */ |
|
|
567 | |
694 | |
568 | /* queue idle watchers unless io or timers are pending */ |
695 | /* queue idle watchers unless io or timers are pending */ |
569 | if (!pendingcnt) |
696 | if (!pendingcnt) |
570 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
697 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
571 | |
698 | |
572 | /* queue check and possibly idle watchers */ |
699 | /* queue check watchers, to be executed first */ |
|
|
700 | if (checkcnt) |
573 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
701 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
574 | |
702 | |
575 | call_pending (); |
703 | call_pending (); |
576 | } |
704 | } |
577 | while (!ev_loop_done); |
705 | while (!ev_loop_done); |
578 | |
706 | |
… | |
… | |
627 | } |
755 | } |
628 | |
756 | |
629 | /*****************************************************************************/ |
757 | /*****************************************************************************/ |
630 | |
758 | |
631 | void |
759 | void |
632 | evio_start (struct ev_io *w) |
760 | ev_io_start (struct ev_io *w) |
633 | { |
761 | { |
634 | if (ev_is_active (w)) |
762 | if (ev_is_active (w)) |
635 | return; |
763 | return; |
636 | |
764 | |
637 | int fd = w->fd; |
765 | int fd = w->fd; |
638 | |
766 | |
639 | ev_start ((W)w, 1); |
767 | ev_start ((W)w, 1); |
640 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
768 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
641 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
769 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
642 | |
770 | |
643 | ++fdchangecnt; |
771 | fd_change (fd); |
644 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
645 | fdchanges [fdchangecnt - 1] = fd; |
|
|
646 | } |
772 | } |
647 | |
773 | |
648 | void |
774 | void |
649 | evio_stop (struct ev_io *w) |
775 | ev_io_stop (struct ev_io *w) |
650 | { |
776 | { |
651 | ev_clear ((W)w); |
777 | ev_clear ((W)w); |
652 | if (!ev_is_active (w)) |
778 | if (!ev_is_active (w)) |
653 | return; |
779 | return; |
654 | |
780 | |
655 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
781 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
656 | ev_stop ((W)w); |
782 | ev_stop ((W)w); |
657 | |
783 | |
658 | ++fdchangecnt; |
784 | fd_change (w->fd); |
659 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
660 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
661 | } |
785 | } |
662 | |
786 | |
663 | void |
787 | void |
664 | evtimer_start (struct ev_timer *w) |
788 | ev_timer_start (struct ev_timer *w) |
665 | { |
789 | { |
666 | if (ev_is_active (w)) |
790 | if (ev_is_active (w)) |
667 | return; |
791 | return; |
668 | |
792 | |
669 | w->at += now; |
793 | w->at += now; |
… | |
… | |
675 | timers [timercnt - 1] = w; |
799 | timers [timercnt - 1] = w; |
676 | upheap ((WT *)timers, timercnt - 1); |
800 | upheap ((WT *)timers, timercnt - 1); |
677 | } |
801 | } |
678 | |
802 | |
679 | void |
803 | void |
680 | evtimer_stop (struct ev_timer *w) |
804 | ev_timer_stop (struct ev_timer *w) |
681 | { |
805 | { |
682 | ev_clear ((W)w); |
806 | ev_clear ((W)w); |
683 | if (!ev_is_active (w)) |
807 | if (!ev_is_active (w)) |
684 | return; |
808 | return; |
685 | |
809 | |
… | |
… | |
693 | |
817 | |
694 | ev_stop ((W)w); |
818 | ev_stop ((W)w); |
695 | } |
819 | } |
696 | |
820 | |
697 | void |
821 | void |
698 | evtimer_again (struct ev_timer *w) |
822 | ev_timer_again (struct ev_timer *w) |
699 | { |
823 | { |
700 | if (ev_is_active (w)) |
824 | if (ev_is_active (w)) |
701 | { |
825 | { |
702 | if (w->repeat) |
826 | if (w->repeat) |
703 | { |
827 | { |
704 | w->at = now + w->repeat; |
828 | w->at = now + w->repeat; |
705 | downheap ((WT *)timers, timercnt, w->active - 1); |
829 | downheap ((WT *)timers, timercnt, w->active - 1); |
706 | } |
830 | } |
707 | else |
831 | else |
708 | evtimer_stop (w); |
832 | ev_timer_stop (w); |
709 | } |
833 | } |
710 | else if (w->repeat) |
834 | else if (w->repeat) |
711 | evtimer_start (w); |
835 | ev_timer_start (w); |
712 | } |
836 | } |
713 | |
837 | |
714 | void |
838 | void |
715 | evperiodic_start (struct ev_periodic *w) |
839 | ev_periodic_start (struct ev_periodic *w) |
716 | { |
840 | { |
717 | if (ev_is_active (w)) |
841 | if (ev_is_active (w)) |
718 | return; |
842 | return; |
719 | |
843 | |
720 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
844 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
… | |
… | |
728 | periodics [periodiccnt - 1] = w; |
852 | periodics [periodiccnt - 1] = w; |
729 | upheap ((WT *)periodics, periodiccnt - 1); |
853 | upheap ((WT *)periodics, periodiccnt - 1); |
730 | } |
854 | } |
731 | |
855 | |
732 | void |
856 | void |
733 | evperiodic_stop (struct ev_periodic *w) |
857 | ev_periodic_stop (struct ev_periodic *w) |
734 | { |
858 | { |
735 | ev_clear ((W)w); |
859 | ev_clear ((W)w); |
736 | if (!ev_is_active (w)) |
860 | if (!ev_is_active (w)) |
737 | return; |
861 | return; |
738 | |
862 | |
… | |
… | |
744 | |
868 | |
745 | ev_stop ((W)w); |
869 | ev_stop ((W)w); |
746 | } |
870 | } |
747 | |
871 | |
748 | void |
872 | void |
749 | evsignal_start (struct ev_signal *w) |
873 | ev_signal_start (struct ev_signal *w) |
750 | { |
874 | { |
751 | if (ev_is_active (w)) |
875 | if (ev_is_active (w)) |
752 | return; |
876 | return; |
753 | |
877 | |
754 | ev_start ((W)w, 1); |
878 | ev_start ((W)w, 1); |
… | |
… | |
764 | sigaction (w->signum, &sa, 0); |
888 | sigaction (w->signum, &sa, 0); |
765 | } |
889 | } |
766 | } |
890 | } |
767 | |
891 | |
768 | void |
892 | void |
769 | evsignal_stop (struct ev_signal *w) |
893 | ev_signal_stop (struct ev_signal *w) |
770 | { |
894 | { |
771 | ev_clear ((W)w); |
895 | ev_clear ((W)w); |
772 | if (!ev_is_active (w)) |
896 | if (!ev_is_active (w)) |
773 | return; |
897 | return; |
774 | |
898 | |
… | |
… | |
777 | |
901 | |
778 | if (!signals [w->signum - 1].head) |
902 | if (!signals [w->signum - 1].head) |
779 | signal (w->signum, SIG_DFL); |
903 | signal (w->signum, SIG_DFL); |
780 | } |
904 | } |
781 | |
905 | |
|
|
906 | void |
782 | void evidle_start (struct ev_idle *w) |
907 | ev_idle_start (struct ev_idle *w) |
783 | { |
908 | { |
784 | if (ev_is_active (w)) |
909 | if (ev_is_active (w)) |
785 | return; |
910 | return; |
786 | |
911 | |
787 | ev_start ((W)w, ++idlecnt); |
912 | ev_start ((W)w, ++idlecnt); |
788 | array_needsize (idles, idlemax, idlecnt, ); |
913 | array_needsize (idles, idlemax, idlecnt, ); |
789 | idles [idlecnt - 1] = w; |
914 | idles [idlecnt - 1] = w; |
790 | } |
915 | } |
791 | |
916 | |
|
|
917 | void |
792 | void evidle_stop (struct ev_idle *w) |
918 | ev_idle_stop (struct ev_idle *w) |
793 | { |
919 | { |
794 | ev_clear ((W)w); |
920 | ev_clear ((W)w); |
795 | if (ev_is_active (w)) |
921 | if (ev_is_active (w)) |
796 | return; |
922 | return; |
797 | |
923 | |
798 | idles [w->active - 1] = idles [--idlecnt]; |
924 | idles [w->active - 1] = idles [--idlecnt]; |
799 | ev_stop ((W)w); |
925 | ev_stop ((W)w); |
800 | } |
926 | } |
801 | |
927 | |
|
|
928 | void |
|
|
929 | ev_prepare_start (struct ev_prepare *w) |
|
|
930 | { |
|
|
931 | if (ev_is_active (w)) |
|
|
932 | return; |
|
|
933 | |
|
|
934 | ev_start ((W)w, ++preparecnt); |
|
|
935 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
936 | prepares [preparecnt - 1] = w; |
|
|
937 | } |
|
|
938 | |
|
|
939 | void |
|
|
940 | ev_prepare_stop (struct ev_prepare *w) |
|
|
941 | { |
|
|
942 | ev_clear ((W)w); |
|
|
943 | if (ev_is_active (w)) |
|
|
944 | return; |
|
|
945 | |
|
|
946 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
947 | ev_stop ((W)w); |
|
|
948 | } |
|
|
949 | |
|
|
950 | void |
802 | void evcheck_start (struct ev_check *w) |
951 | ev_check_start (struct ev_check *w) |
803 | { |
952 | { |
804 | if (ev_is_active (w)) |
953 | if (ev_is_active (w)) |
805 | return; |
954 | return; |
806 | |
955 | |
807 | ev_start ((W)w, ++checkcnt); |
956 | ev_start ((W)w, ++checkcnt); |
808 | array_needsize (checks, checkmax, checkcnt, ); |
957 | array_needsize (checks, checkmax, checkcnt, ); |
809 | checks [checkcnt - 1] = w; |
958 | checks [checkcnt - 1] = w; |
810 | } |
959 | } |
811 | |
960 | |
|
|
961 | void |
812 | void evcheck_stop (struct ev_check *w) |
962 | ev_check_stop (struct ev_check *w) |
813 | { |
963 | { |
814 | ev_clear ((W)w); |
964 | ev_clear ((W)w); |
815 | if (ev_is_active (w)) |
965 | if (ev_is_active (w)) |
816 | return; |
966 | return; |
817 | |
967 | |
818 | checks [w->active - 1] = checks [--checkcnt]; |
968 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
969 | ev_stop ((W)w); |
|
|
970 | } |
|
|
971 | |
|
|
972 | void |
|
|
973 | ev_child_start (struct ev_child *w) |
|
|
974 | { |
|
|
975 | if (ev_is_active (w)) |
|
|
976 | return; |
|
|
977 | |
|
|
978 | ev_start ((W)w, 1); |
|
|
979 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
980 | } |
|
|
981 | |
|
|
982 | void |
|
|
983 | ev_child_stop (struct ev_child *w) |
|
|
984 | { |
|
|
985 | ev_clear ((W)w); |
|
|
986 | if (ev_is_active (w)) |
|
|
987 | return; |
|
|
988 | |
|
|
989 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
819 | ev_stop ((W)w); |
990 | ev_stop ((W)w); |
820 | } |
991 | } |
821 | |
992 | |
822 | /*****************************************************************************/ |
993 | /*****************************************************************************/ |
823 | |
994 | |
… | |
… | |
833 | once_cb (struct ev_once *once, int revents) |
1004 | once_cb (struct ev_once *once, int revents) |
834 | { |
1005 | { |
835 | void (*cb)(int revents, void *arg) = once->cb; |
1006 | void (*cb)(int revents, void *arg) = once->cb; |
836 | void *arg = once->arg; |
1007 | void *arg = once->arg; |
837 | |
1008 | |
838 | evio_stop (&once->io); |
1009 | ev_io_stop (&once->io); |
839 | evtimer_stop (&once->to); |
1010 | ev_timer_stop (&once->to); |
840 | free (once); |
1011 | free (once); |
841 | |
1012 | |
842 | cb (revents, arg); |
1013 | cb (revents, arg); |
843 | } |
1014 | } |
844 | |
1015 | |
… | |
… | |
858 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1029 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
859 | { |
1030 | { |
860 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
1031 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
861 | |
1032 | |
862 | if (!once) |
1033 | if (!once) |
863 | cb (EV_ERROR, arg); |
1034 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
864 | else |
1035 | else |
865 | { |
1036 | { |
866 | once->cb = cb; |
1037 | once->cb = cb; |
867 | once->arg = arg; |
1038 | once->arg = arg; |
868 | |
1039 | |
869 | evw_init (&once->io, once_cb_io); |
1040 | ev_watcher_init (&once->io, once_cb_io); |
870 | |
|
|
871 | if (fd >= 0) |
1041 | if (fd >= 0) |
872 | { |
1042 | { |
873 | evio_set (&once->io, fd, events); |
1043 | ev_io_set (&once->io, fd, events); |
874 | evio_start (&once->io); |
1044 | ev_io_start (&once->io); |
875 | } |
1045 | } |
876 | |
1046 | |
877 | evw_init (&once->to, once_cb_to); |
1047 | ev_watcher_init (&once->to, once_cb_to); |
878 | |
|
|
879 | if (timeout >= 0.) |
1048 | if (timeout >= 0.) |
880 | { |
1049 | { |
881 | evtimer_set (&once->to, timeout, 0.); |
1050 | ev_timer_set (&once->to, timeout, 0.); |
882 | evtimer_start (&once->to); |
1051 | ev_timer_start (&once->to); |
883 | } |
1052 | } |
884 | } |
1053 | } |
885 | } |
1054 | } |
886 | |
1055 | |
887 | /*****************************************************************************/ |
1056 | /*****************************************************************************/ |
… | |
… | |
898 | |
1067 | |
899 | static void |
1068 | static void |
900 | ocb (struct ev_timer *w, int revents) |
1069 | ocb (struct ev_timer *w, int revents) |
901 | { |
1070 | { |
902 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
1071 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
903 | evtimer_stop (w); |
1072 | ev_timer_stop (w); |
904 | evtimer_start (w); |
1073 | ev_timer_start (w); |
905 | } |
1074 | } |
906 | |
1075 | |
907 | static void |
1076 | static void |
908 | scb (struct ev_signal *w, int revents) |
1077 | scb (struct ev_signal *w, int revents) |
909 | { |
1078 | { |
910 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
1079 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
911 | evio_stop (&wio); |
1080 | ev_io_stop (&wio); |
912 | evio_start (&wio); |
1081 | ev_io_start (&wio); |
913 | } |
1082 | } |
914 | |
1083 | |
915 | static void |
1084 | static void |
916 | gcb (struct ev_signal *w, int revents) |
1085 | gcb (struct ev_signal *w, int revents) |
917 | { |
1086 | { |
… | |
… | |
921 | |
1090 | |
922 | int main (void) |
1091 | int main (void) |
923 | { |
1092 | { |
924 | ev_init (0); |
1093 | ev_init (0); |
925 | |
1094 | |
926 | evio_init (&wio, sin_cb, 0, EV_READ); |
1095 | ev_io_init (&wio, sin_cb, 0, EV_READ); |
927 | evio_start (&wio); |
1096 | ev_io_start (&wio); |
928 | |
1097 | |
929 | struct ev_timer t[10000]; |
1098 | struct ev_timer t[10000]; |
930 | |
1099 | |
931 | #if 0 |
1100 | #if 0 |
932 | int i; |
1101 | int i; |
933 | for (i = 0; i < 10000; ++i) |
1102 | for (i = 0; i < 10000; ++i) |
934 | { |
1103 | { |
935 | struct ev_timer *w = t + i; |
1104 | struct ev_timer *w = t + i; |
936 | evw_init (w, ocb, i); |
1105 | ev_watcher_init (w, ocb, i); |
937 | evtimer_init_abs (w, ocb, drand48 (), 0.99775533); |
1106 | ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
938 | evtimer_start (w); |
1107 | ev_timer_start (w); |
939 | if (drand48 () < 0.5) |
1108 | if (drand48 () < 0.5) |
940 | evtimer_stop (w); |
1109 | ev_timer_stop (w); |
941 | } |
1110 | } |
942 | #endif |
1111 | #endif |
943 | |
1112 | |
944 | struct ev_timer t1; |
1113 | struct ev_timer t1; |
945 | evtimer_init (&t1, ocb, 5, 10); |
1114 | ev_timer_init (&t1, ocb, 5, 10); |
946 | evtimer_start (&t1); |
1115 | ev_timer_start (&t1); |
947 | |
1116 | |
948 | struct ev_signal sig; |
1117 | struct ev_signal sig; |
949 | evsignal_init (&sig, scb, SIGQUIT); |
1118 | ev_signal_init (&sig, scb, SIGQUIT); |
950 | evsignal_start (&sig); |
1119 | ev_signal_start (&sig); |
951 | |
1120 | |
952 | struct ev_check cw; |
1121 | struct ev_check cw; |
953 | evcheck_init (&cw, gcb); |
1122 | ev_check_init (&cw, gcb); |
954 | evcheck_start (&cw); |
1123 | ev_check_start (&cw); |
955 | |
1124 | |
956 | struct ev_idle iw; |
1125 | struct ev_idle iw; |
957 | evidle_init (&iw, gcb); |
1126 | ev_idle_init (&iw, gcb); |
958 | evidle_start (&iw); |
1127 | ev_idle_start (&iw); |
959 | |
1128 | |
960 | ev_loop (0); |
1129 | ev_loop (0); |
961 | |
1130 | |
962 | return 0; |
1131 | return 0; |
963 | } |
1132 | } |