|
|
1 | /* |
|
|
2 | * libev event processing core, watcher management |
|
|
3 | * |
|
|
4 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
|
|
5 | * All rights reserved. |
|
|
6 | * |
|
|
7 | * Redistribution and use in source and binary forms, with or without |
|
|
8 | * modification, are permitted provided that the following conditions are |
|
|
9 | * met: |
|
|
10 | * |
|
|
11 | * * Redistributions of source code must retain the above copyright |
|
|
12 | * notice, this list of conditions and the following disclaimer. |
|
|
13 | * |
|
|
14 | * * Redistributions in binary form must reproduce the above |
|
|
15 | * copyright notice, this list of conditions and the following |
|
|
16 | * disclaimer in the documentation and/or other materials provided |
|
|
17 | * with the distribution. |
|
|
18 | * |
|
|
19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
|
|
20 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
|
|
21 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
|
|
22 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
|
|
23 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
|
|
24 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
|
|
25 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
|
|
26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
|
|
27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
|
|
28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
|
|
29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
|
|
30 | */ |
|
|
31 | |
|
|
32 | #ifdef __cplusplus |
|
|
33 | extern "C" { |
|
|
34 | #endif |
|
|
35 | |
|
|
36 | #ifndef EV_STANDALONE |
|
|
37 | # ifdef EV_CONFIG_H |
|
|
38 | # include EV_CONFIG_H |
|
|
39 | # else |
|
|
40 | # include "config.h" |
|
|
41 | # endif |
|
|
42 | |
|
|
43 | # if HAVE_CLOCK_GETTIME |
|
|
44 | # ifndef EV_USE_MONOTONIC |
|
|
45 | # define EV_USE_MONOTONIC 1 |
|
|
46 | # endif |
|
|
47 | # ifndef EV_USE_REALTIME |
|
|
48 | # define EV_USE_REALTIME 1 |
|
|
49 | # endif |
|
|
50 | # else |
|
|
51 | # ifndef EV_USE_MONOTONIC |
|
|
52 | # define EV_USE_MONOTONIC 0 |
|
|
53 | # endif |
|
|
54 | # ifndef EV_USE_REALTIME |
|
|
55 | # define EV_USE_REALTIME 0 |
|
|
56 | # endif |
|
|
57 | # endif |
|
|
58 | |
|
|
59 | # ifndef EV_USE_SELECT |
|
|
60 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
|
|
61 | # define EV_USE_SELECT 1 |
|
|
62 | # else |
|
|
63 | # define EV_USE_SELECT 0 |
|
|
64 | # endif |
|
|
65 | # endif |
|
|
66 | |
|
|
67 | # ifndef EV_USE_POLL |
|
|
68 | # if HAVE_POLL && HAVE_POLL_H |
|
|
69 | # define EV_USE_POLL 1 |
|
|
70 | # else |
|
|
71 | # define EV_USE_POLL 0 |
|
|
72 | # endif |
|
|
73 | # endif |
|
|
74 | |
|
|
75 | # ifndef EV_USE_EPOLL |
|
|
76 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
|
|
77 | # define EV_USE_EPOLL 1 |
|
|
78 | # else |
|
|
79 | # define EV_USE_EPOLL 0 |
|
|
80 | # endif |
|
|
81 | # endif |
|
|
82 | |
|
|
83 | # ifndef EV_USE_KQUEUE |
|
|
84 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
|
|
85 | # define EV_USE_KQUEUE 1 |
|
|
86 | # else |
|
|
87 | # define EV_USE_KQUEUE 0 |
|
|
88 | # endif |
|
|
89 | # endif |
|
|
90 | |
|
|
91 | # ifndef EV_USE_PORT |
|
|
92 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
|
|
93 | # define EV_USE_PORT 1 |
|
|
94 | # else |
|
|
95 | # define EV_USE_PORT 0 |
|
|
96 | # endif |
|
|
97 | # endif |
|
|
98 | |
|
|
99 | #endif |
|
|
100 | |
1 | #include <math.h> |
101 | #include <math.h> |
2 | #include <stdlib.h> |
102 | #include <stdlib.h> |
3 | #include <unistd.h> |
|
|
4 | #include <fcntl.h> |
103 | #include <fcntl.h> |
5 | #include <signal.h> |
104 | #include <stddef.h> |
6 | |
105 | |
7 | #include <stdio.h> |
106 | #include <stdio.h> |
8 | |
107 | |
9 | #include <assert.h> |
108 | #include <assert.h> |
10 | #include <errno.h> |
109 | #include <errno.h> |
11 | #include <sys/time.h> |
110 | #include <sys/types.h> |
12 | #include <time.h> |
111 | #include <time.h> |
13 | |
112 | |
14 | #ifndef HAVE_MONOTONIC |
113 | #include <signal.h> |
15 | # ifdef CLOCK_MONOTONIC |
114 | |
16 | # define HAVE_MONOTONIC 1 |
115 | #ifndef _WIN32 |
|
|
116 | # include <unistd.h> |
|
|
117 | # include <sys/time.h> |
|
|
118 | # include <sys/wait.h> |
|
|
119 | #else |
|
|
120 | # define WIN32_LEAN_AND_MEAN |
|
|
121 | # include <windows.h> |
|
|
122 | # ifndef EV_SELECT_IS_WINSOCKET |
|
|
123 | # define EV_SELECT_IS_WINSOCKET 1 |
17 | # endif |
124 | # endif |
18 | #endif |
125 | #endif |
19 | |
126 | |
|
|
127 | /**/ |
|
|
128 | |
|
|
129 | #ifndef EV_USE_MONOTONIC |
|
|
130 | # define EV_USE_MONOTONIC 0 |
|
|
131 | #endif |
|
|
132 | |
|
|
133 | #ifndef EV_USE_REALTIME |
|
|
134 | # define EV_USE_REALTIME 0 |
|
|
135 | #endif |
|
|
136 | |
20 | #ifndef HAVE_SELECT |
137 | #ifndef EV_USE_SELECT |
21 | # define HAVE_SELECT 1 |
138 | # define EV_USE_SELECT 1 |
|
|
139 | #endif |
|
|
140 | |
|
|
141 | #ifndef EV_USE_POLL |
|
|
142 | # ifdef _WIN32 |
|
|
143 | # define EV_USE_POLL 0 |
|
|
144 | # else |
|
|
145 | # define EV_USE_POLL 1 |
22 | #endif |
146 | # endif |
|
|
147 | #endif |
23 | |
148 | |
24 | #ifndef HAVE_EPOLL |
149 | #ifndef EV_USE_EPOLL |
25 | # define HAVE_EPOLL 0 |
150 | # define EV_USE_EPOLL 0 |
26 | #endif |
151 | #endif |
27 | |
152 | |
|
|
153 | #ifndef EV_USE_KQUEUE |
|
|
154 | # define EV_USE_KQUEUE 0 |
|
|
155 | #endif |
|
|
156 | |
|
|
157 | #ifndef EV_USE_PORT |
|
|
158 | # define EV_USE_PORT 0 |
|
|
159 | #endif |
|
|
160 | |
|
|
161 | /**/ |
|
|
162 | |
|
|
163 | #ifndef CLOCK_MONOTONIC |
|
|
164 | # undef EV_USE_MONOTONIC |
|
|
165 | # define EV_USE_MONOTONIC 0 |
|
|
166 | #endif |
|
|
167 | |
28 | #ifndef HAVE_REALTIME |
168 | #ifndef CLOCK_REALTIME |
29 | # define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
169 | # undef EV_USE_REALTIME |
|
|
170 | # define EV_USE_REALTIME 0 |
30 | #endif |
171 | #endif |
|
|
172 | |
|
|
173 | #if EV_SELECT_IS_WINSOCKET |
|
|
174 | # include <winsock.h> |
|
|
175 | #endif |
|
|
176 | |
|
|
177 | /**/ |
31 | |
178 | |
32 | #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) */ |
33 | #define MAX_BLOCKTIME 60. |
180 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
|
|
181 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
|
|
182 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ |
34 | |
183 | |
|
|
184 | #ifdef EV_H |
|
|
185 | # include EV_H |
|
|
186 | #else |
35 | #include "ev.h" |
187 | # include "ev.h" |
|
|
188 | #endif |
36 | |
189 | |
37 | struct ev_watcher { |
190 | #if __GNUC__ >= 3 |
38 | EV_WATCHER (ev_watcher); |
191 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
39 | }; |
192 | # define inline static inline |
|
|
193 | #else |
|
|
194 | # define expect(expr,value) (expr) |
|
|
195 | # define inline static |
|
|
196 | #endif |
40 | |
197 | |
41 | struct ev_watcher_list { |
198 | #define expect_false(expr) expect ((expr) != 0, 0) |
42 | EV_WATCHER_LIST (ev_watcher_list); |
199 | #define expect_true(expr) expect ((expr) != 0, 1) |
43 | }; |
200 | |
|
|
201 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
|
|
202 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
|
|
203 | |
|
|
204 | #define EMPTY0 /* required for microsofts broken pseudo-c compiler */ |
|
|
205 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
44 | |
206 | |
45 | typedef struct ev_watcher *W; |
207 | typedef struct ev_watcher *W; |
46 | typedef struct ev_watcher_list *WL; |
208 | typedef struct ev_watcher_list *WL; |
|
|
209 | typedef struct ev_watcher_time *WT; |
47 | |
210 | |
48 | static ev_tstamp now, diff; /* monotonic clock */ |
211 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
|
|
212 | |
|
|
213 | #ifdef _WIN32 |
|
|
214 | # include "ev_win32.c" |
|
|
215 | #endif |
|
|
216 | |
|
|
217 | /*****************************************************************************/ |
|
|
218 | |
|
|
219 | static void (*syserr_cb)(const char *msg); |
|
|
220 | |
|
|
221 | void ev_set_syserr_cb (void (*cb)(const char *msg)) |
|
|
222 | { |
|
|
223 | syserr_cb = cb; |
|
|
224 | } |
|
|
225 | |
|
|
226 | static void |
|
|
227 | syserr (const char *msg) |
|
|
228 | { |
|
|
229 | if (!msg) |
|
|
230 | msg = "(libev) system error"; |
|
|
231 | |
|
|
232 | if (syserr_cb) |
|
|
233 | syserr_cb (msg); |
|
|
234 | else |
|
|
235 | { |
|
|
236 | perror (msg); |
|
|
237 | abort (); |
|
|
238 | } |
|
|
239 | } |
|
|
240 | |
|
|
241 | static void *(*alloc)(void *ptr, long size); |
|
|
242 | |
|
|
243 | void ev_set_allocator (void *(*cb)(void *ptr, long size)) |
|
|
244 | { |
|
|
245 | alloc = cb; |
|
|
246 | } |
|
|
247 | |
|
|
248 | static void * |
|
|
249 | ev_realloc (void *ptr, long size) |
|
|
250 | { |
|
|
251 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
|
|
252 | |
|
|
253 | if (!ptr && size) |
|
|
254 | { |
|
|
255 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
|
|
256 | abort (); |
|
|
257 | } |
|
|
258 | |
|
|
259 | return ptr; |
|
|
260 | } |
|
|
261 | |
|
|
262 | #define ev_malloc(size) ev_realloc (0, (size)) |
|
|
263 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
|
|
264 | |
|
|
265 | /*****************************************************************************/ |
|
|
266 | |
|
|
267 | typedef struct |
|
|
268 | { |
|
|
269 | WL head; |
|
|
270 | unsigned char events; |
|
|
271 | unsigned char reify; |
|
|
272 | #if EV_SELECT_IS_WINSOCKET |
|
|
273 | SOCKET handle; |
|
|
274 | #endif |
|
|
275 | } ANFD; |
|
|
276 | |
|
|
277 | typedef struct |
|
|
278 | { |
|
|
279 | W w; |
|
|
280 | int events; |
|
|
281 | } ANPENDING; |
|
|
282 | |
|
|
283 | #if EV_MULTIPLICITY |
|
|
284 | |
|
|
285 | struct ev_loop |
|
|
286 | { |
|
|
287 | ev_tstamp ev_rt_now; |
|
|
288 | #define ev_rt_now ((loop)->ev_rt_now) |
|
|
289 | #define VAR(name,decl) decl; |
|
|
290 | #include "ev_vars.h" |
|
|
291 | #undef VAR |
|
|
292 | }; |
|
|
293 | #include "ev_wrap.h" |
|
|
294 | |
|
|
295 | static struct ev_loop default_loop_struct; |
|
|
296 | struct ev_loop *ev_default_loop_ptr; |
|
|
297 | |
|
|
298 | #else |
|
|
299 | |
49 | ev_tstamp ev_now; |
300 | ev_tstamp ev_rt_now; |
50 | int ev_method; |
301 | #define VAR(name,decl) static decl; |
|
|
302 | #include "ev_vars.h" |
|
|
303 | #undef VAR |
51 | |
304 | |
52 | static int have_monotonic; /* runtime */ |
305 | static int ev_default_loop_ptr; |
53 | |
306 | |
54 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
307 | #endif |
55 | static void (*method_modify)(int fd, int oev, int nev); |
|
|
56 | static void (*method_poll)(ev_tstamp timeout); |
|
|
57 | |
308 | |
58 | /*****************************************************************************/ |
309 | /*****************************************************************************/ |
59 | |
310 | |
60 | ev_tstamp |
311 | ev_tstamp |
61 | ev_time (void) |
312 | ev_time (void) |
62 | { |
313 | { |
63 | #if HAVE_REALTIME |
314 | #if EV_USE_REALTIME |
64 | struct timespec ts; |
315 | struct timespec ts; |
65 | clock_gettime (CLOCK_REALTIME, &ts); |
316 | clock_gettime (CLOCK_REALTIME, &ts); |
66 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
317 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
67 | #else |
318 | #else |
68 | struct timeval tv; |
319 | struct timeval tv; |
69 | gettimeofday (&tv, 0); |
320 | gettimeofday (&tv, 0); |
70 | return tv.tv_sec + tv.tv_usec * 1e-6; |
321 | return tv.tv_sec + tv.tv_usec * 1e-6; |
71 | #endif |
322 | #endif |
72 | } |
323 | } |
73 | |
324 | |
74 | static ev_tstamp |
325 | inline ev_tstamp |
75 | get_clock (void) |
326 | get_clock (void) |
76 | { |
327 | { |
77 | #if HAVE_MONOTONIC |
328 | #if EV_USE_MONOTONIC |
78 | if (have_monotonic) |
329 | if (expect_true (have_monotonic)) |
79 | { |
330 | { |
80 | struct timespec ts; |
331 | struct timespec ts; |
81 | clock_gettime (CLOCK_MONOTONIC, &ts); |
332 | clock_gettime (CLOCK_MONOTONIC, &ts); |
82 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
333 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
83 | } |
334 | } |
84 | #endif |
335 | #endif |
85 | |
336 | |
86 | return ev_time (); |
337 | return ev_time (); |
87 | } |
338 | } |
88 | |
339 | |
|
|
340 | #if EV_MULTIPLICITY |
|
|
341 | ev_tstamp |
|
|
342 | ev_now (EV_P) |
|
|
343 | { |
|
|
344 | return ev_rt_now; |
|
|
345 | } |
|
|
346 | #endif |
|
|
347 | |
|
|
348 | #define array_roundsize(type,n) (((n) | 4) & ~3) |
|
|
349 | |
89 | #define array_needsize(base,cur,cnt,init) \ |
350 | #define array_needsize(type,base,cur,cnt,init) \ |
90 | if ((cnt) > cur) \ |
351 | if (expect_false ((cnt) > cur)) \ |
91 | { \ |
352 | { \ |
92 | int newcnt = cur ? cur << 1 : 16; \ |
353 | int newcnt = cur; \ |
93 | fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\ |
354 | do \ |
|
|
355 | { \ |
|
|
356 | newcnt = array_roundsize (type, newcnt << 1); \ |
|
|
357 | } \ |
|
|
358 | while ((cnt) > newcnt); \ |
|
|
359 | \ |
94 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
360 | base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\ |
95 | init (base + cur, newcnt - cur); \ |
361 | init (base + cur, newcnt - cur); \ |
96 | cur = newcnt; \ |
362 | cur = newcnt; \ |
97 | } |
363 | } |
|
|
364 | |
|
|
365 | #define array_slim(type,stem) \ |
|
|
366 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
|
|
367 | { \ |
|
|
368 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
|
|
369 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
|
|
370 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
|
|
371 | } |
|
|
372 | |
|
|
373 | #define array_free(stem, idx) \ |
|
|
374 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
98 | |
375 | |
99 | /*****************************************************************************/ |
376 | /*****************************************************************************/ |
100 | |
377 | |
101 | typedef struct |
|
|
102 | { |
|
|
103 | struct ev_io *head; |
|
|
104 | unsigned char wev, rev; /* want, received event set */ |
|
|
105 | } ANFD; |
|
|
106 | |
|
|
107 | static ANFD *anfds; |
|
|
108 | static int anfdmax; |
|
|
109 | |
|
|
110 | static int *fdchanges; |
|
|
111 | static int fdchangemax, fdchangecnt; |
|
|
112 | |
|
|
113 | static void |
378 | static void |
114 | anfds_init (ANFD *base, int count) |
379 | anfds_init (ANFD *base, int count) |
115 | { |
380 | { |
116 | while (count--) |
381 | while (count--) |
117 | { |
382 | { |
118 | base->head = 0; |
383 | base->head = 0; |
119 | base->wev = base->rev = EV_NONE; |
384 | base->events = EV_NONE; |
|
|
385 | base->reify = 0; |
|
|
386 | |
120 | ++base; |
387 | ++base; |
121 | } |
388 | } |
122 | } |
389 | } |
123 | |
390 | |
124 | typedef struct |
391 | void |
|
|
392 | ev_feed_event (EV_P_ void *w, int revents) |
125 | { |
393 | { |
126 | W w; |
394 | W w_ = (W)w; |
127 | int events; |
|
|
128 | } ANPENDING; |
|
|
129 | |
395 | |
130 | static ANPENDING *pendings; |
396 | if (expect_false (w_->pending)) |
131 | static int pendingmax, pendingcnt; |
397 | { |
|
|
398 | pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; |
|
|
399 | return; |
|
|
400 | } |
132 | |
401 | |
133 | static void |
|
|
134 | event (W w, int events) |
|
|
135 | { |
|
|
136 | w->pending = ++pendingcnt; |
402 | w_->pending = ++pendingcnt [ABSPRI (w_)]; |
137 | array_needsize (pendings, pendingmax, pendingcnt, ); |
403 | array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2); |
138 | pendings [pendingcnt - 1].w = w; |
404 | pendings [ABSPRI (w_)][w_->pending - 1].w = w_; |
139 | pendings [pendingcnt - 1].events = events; |
405 | pendings [ABSPRI (w_)][w_->pending - 1].events = revents; |
140 | } |
406 | } |
141 | |
407 | |
142 | static void |
408 | static void |
|
|
409 | queue_events (EV_P_ W *events, int eventcnt, int type) |
|
|
410 | { |
|
|
411 | int i; |
|
|
412 | |
|
|
413 | for (i = 0; i < eventcnt; ++i) |
|
|
414 | ev_feed_event (EV_A_ events [i], type); |
|
|
415 | } |
|
|
416 | |
|
|
417 | inline void |
143 | fd_event (int fd, int events) |
418 | fd_event (EV_P_ int fd, int revents) |
144 | { |
419 | { |
145 | ANFD *anfd = anfds + fd; |
420 | ANFD *anfd = anfds + fd; |
146 | struct ev_io *w; |
421 | struct ev_io *w; |
147 | |
422 | |
148 | for (w = anfd->head; w; w = w->next) |
423 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
149 | { |
424 | { |
150 | int ev = w->events & events; |
425 | int ev = w->events & revents; |
151 | |
426 | |
152 | if (ev) |
427 | if (ev) |
153 | event ((W)w, ev); |
428 | ev_feed_event (EV_A_ (W)w, ev); |
154 | } |
429 | } |
155 | } |
430 | } |
156 | |
431 | |
157 | static void |
432 | void |
158 | queue_events (W *events, int eventcnt, int type) |
433 | ev_feed_fd_event (EV_P_ int fd, int revents) |
159 | { |
434 | { |
160 | int i; |
435 | fd_event (EV_A_ fd, revents); |
161 | |
|
|
162 | for (i = 0; i < eventcnt; ++i) |
|
|
163 | event (events [i], type); |
|
|
164 | } |
436 | } |
165 | |
437 | |
166 | /*****************************************************************************/ |
438 | /*****************************************************************************/ |
167 | |
439 | |
168 | static struct ev_timer **atimers; |
440 | inline void |
169 | static int atimermax, atimercnt; |
441 | fd_reify (EV_P) |
170 | |
|
|
171 | static struct ev_timer **rtimers; |
|
|
172 | static int rtimermax, rtimercnt; |
|
|
173 | |
|
|
174 | static void |
|
|
175 | upheap (struct ev_timer **timers, int k) |
|
|
176 | { |
|
|
177 | struct ev_timer *w = timers [k]; |
|
|
178 | |
|
|
179 | while (k && timers [k >> 1]->at > w->at) |
|
|
180 | { |
|
|
181 | timers [k] = timers [k >> 1]; |
|
|
182 | timers [k]->active = k + 1; |
|
|
183 | k >>= 1; |
|
|
184 | } |
|
|
185 | |
|
|
186 | timers [k] = w; |
|
|
187 | timers [k]->active = k + 1; |
|
|
188 | |
|
|
189 | } |
|
|
190 | |
|
|
191 | static void |
|
|
192 | downheap (struct ev_timer **timers, int N, int k) |
|
|
193 | { |
|
|
194 | struct ev_timer *w = timers [k]; |
|
|
195 | |
|
|
196 | while (k < (N >> 1)) |
|
|
197 | { |
|
|
198 | int j = k << 1; |
|
|
199 | |
|
|
200 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
|
|
201 | ++j; |
|
|
202 | |
|
|
203 | if (w->at <= timers [j]->at) |
|
|
204 | break; |
|
|
205 | |
|
|
206 | timers [k] = timers [j]; |
|
|
207 | timers [k]->active = k + 1; |
|
|
208 | k = j; |
|
|
209 | } |
|
|
210 | |
|
|
211 | timers [k] = w; |
|
|
212 | timers [k]->active = k + 1; |
|
|
213 | } |
|
|
214 | |
|
|
215 | /*****************************************************************************/ |
|
|
216 | |
|
|
217 | typedef struct |
|
|
218 | { |
|
|
219 | struct ev_signal *head; |
|
|
220 | sig_atomic_t gotsig; |
|
|
221 | } ANSIG; |
|
|
222 | |
|
|
223 | static ANSIG *signals; |
|
|
224 | static int signalmax; |
|
|
225 | |
|
|
226 | static int sigpipe [2]; |
|
|
227 | static sig_atomic_t gotsig; |
|
|
228 | static struct ev_io sigev; |
|
|
229 | |
|
|
230 | static void |
|
|
231 | signals_init (ANSIG *base, int count) |
|
|
232 | { |
|
|
233 | while (count--) |
|
|
234 | { |
|
|
235 | base->head = 0; |
|
|
236 | base->gotsig = 0; |
|
|
237 | ++base; |
|
|
238 | } |
|
|
239 | } |
|
|
240 | |
|
|
241 | static void |
|
|
242 | sighandler (int signum) |
|
|
243 | { |
|
|
244 | signals [signum - 1].gotsig = 1; |
|
|
245 | |
|
|
246 | if (!gotsig) |
|
|
247 | { |
|
|
248 | gotsig = 1; |
|
|
249 | write (sigpipe [1], &gotsig, 1); |
|
|
250 | } |
|
|
251 | } |
|
|
252 | |
|
|
253 | static void |
|
|
254 | sigcb (struct ev_io *iow, int revents) |
|
|
255 | { |
|
|
256 | struct ev_signal *w; |
|
|
257 | int sig; |
|
|
258 | |
|
|
259 | gotsig = 0; |
|
|
260 | read (sigpipe [0], &revents, 1); |
|
|
261 | |
|
|
262 | for (sig = signalmax; sig--; ) |
|
|
263 | if (signals [sig].gotsig) |
|
|
264 | { |
|
|
265 | signals [sig].gotsig = 0; |
|
|
266 | |
|
|
267 | for (w = signals [sig].head; w; w = w->next) |
|
|
268 | event ((W)w, EV_SIGNAL); |
|
|
269 | } |
|
|
270 | } |
|
|
271 | |
|
|
272 | static void |
|
|
273 | siginit (void) |
|
|
274 | { |
|
|
275 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
|
|
276 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
277 | |
|
|
278 | /* rather than sort out wether we really need nb, set it */ |
|
|
279 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
|
|
280 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
281 | |
|
|
282 | evio_set (&sigev, sigpipe [0], EV_READ); |
|
|
283 | evio_start (&sigev); |
|
|
284 | } |
|
|
285 | |
|
|
286 | /*****************************************************************************/ |
|
|
287 | |
|
|
288 | static struct ev_idle **idles; |
|
|
289 | static int idlemax, idlecnt; |
|
|
290 | |
|
|
291 | static struct ev_check **checks; |
|
|
292 | static int checkmax, checkcnt; |
|
|
293 | |
|
|
294 | /*****************************************************************************/ |
|
|
295 | |
|
|
296 | #if HAVE_EPOLL |
|
|
297 | # include "ev_epoll.c" |
|
|
298 | #endif |
|
|
299 | #if HAVE_SELECT |
|
|
300 | # include "ev_select.c" |
|
|
301 | #endif |
|
|
302 | |
|
|
303 | int ev_init (int flags) |
|
|
304 | { |
|
|
305 | #if HAVE_MONOTONIC |
|
|
306 | { |
|
|
307 | struct timespec ts; |
|
|
308 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
309 | have_monotonic = 1; |
|
|
310 | } |
|
|
311 | #endif |
|
|
312 | |
|
|
313 | ev_now = ev_time (); |
|
|
314 | now = get_clock (); |
|
|
315 | diff = ev_now - now; |
|
|
316 | |
|
|
317 | if (pipe (sigpipe)) |
|
|
318 | return 0; |
|
|
319 | |
|
|
320 | ev_method = EVMETHOD_NONE; |
|
|
321 | #if HAVE_EPOLL |
|
|
322 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
|
|
323 | #endif |
|
|
324 | #if HAVE_SELECT |
|
|
325 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
326 | #endif |
|
|
327 | |
|
|
328 | if (ev_method) |
|
|
329 | { |
|
|
330 | evw_init (&sigev, sigcb, 0); |
|
|
331 | siginit (); |
|
|
332 | } |
|
|
333 | |
|
|
334 | return ev_method; |
|
|
335 | } |
|
|
336 | |
|
|
337 | /*****************************************************************************/ |
|
|
338 | |
|
|
339 | void ev_prefork (void) |
|
|
340 | { |
|
|
341 | /* nop */ |
|
|
342 | } |
|
|
343 | |
|
|
344 | void ev_postfork_parent (void) |
|
|
345 | { |
|
|
346 | /* nop */ |
|
|
347 | } |
|
|
348 | |
|
|
349 | void ev_postfork_child (void) |
|
|
350 | { |
|
|
351 | #if HAVE_EPOLL |
|
|
352 | if (ev_method == EVMETHOD_EPOLL) |
|
|
353 | epoll_postfork_child (); |
|
|
354 | #endif |
|
|
355 | |
|
|
356 | evio_stop (&sigev); |
|
|
357 | close (sigpipe [0]); |
|
|
358 | close (sigpipe [1]); |
|
|
359 | pipe (sigpipe); |
|
|
360 | siginit (); |
|
|
361 | } |
|
|
362 | |
|
|
363 | /*****************************************************************************/ |
|
|
364 | |
|
|
365 | static void |
|
|
366 | fd_reify (void) |
|
|
367 | { |
442 | { |
368 | int i; |
443 | int i; |
369 | |
444 | |
370 | for (i = 0; i < fdchangecnt; ++i) |
445 | for (i = 0; i < fdchangecnt; ++i) |
371 | { |
446 | { |
372 | int fd = fdchanges [i]; |
447 | int fd = fdchanges [i]; |
373 | ANFD *anfd = anfds + fd; |
448 | ANFD *anfd = anfds + fd; |
374 | struct ev_io *w; |
449 | struct ev_io *w; |
375 | |
450 | |
376 | int wev = 0; |
451 | int events = 0; |
377 | |
452 | |
378 | for (w = anfd->head; w; w = w->next) |
453 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
379 | wev |= w->events; |
454 | events |= w->events; |
380 | |
455 | |
381 | if (anfd->wev != wev) |
456 | #if EV_SELECT_IS_WINSOCKET |
|
|
457 | if (events) |
382 | { |
458 | { |
383 | method_modify (fd, anfd->wev, wev); |
459 | unsigned long argp; |
384 | anfd->wev = wev; |
460 | anfd->handle = _get_osfhandle (fd); |
|
|
461 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
385 | } |
462 | } |
|
|
463 | #endif |
|
|
464 | |
|
|
465 | anfd->reify = 0; |
|
|
466 | |
|
|
467 | backend_modify (EV_A_ fd, anfd->events, events); |
|
|
468 | anfd->events = events; |
386 | } |
469 | } |
387 | |
470 | |
388 | fdchangecnt = 0; |
471 | fdchangecnt = 0; |
389 | } |
472 | } |
390 | |
473 | |
391 | static void |
474 | static void |
392 | call_pending () |
475 | fd_change (EV_P_ int fd) |
|
|
476 | { |
|
|
477 | if (expect_false (anfds [fd].reify)) |
|
|
478 | return; |
|
|
479 | |
|
|
480 | anfds [fd].reify = 1; |
|
|
481 | |
|
|
482 | ++fdchangecnt; |
|
|
483 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
|
|
484 | fdchanges [fdchangecnt - 1] = fd; |
|
|
485 | } |
|
|
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 | |
|
|
509 | /* called on EBADF to verify fds */ |
|
|
510 | static void |
|
|
511 | fd_ebadf (EV_P) |
|
|
512 | { |
|
|
513 | int fd; |
|
|
514 | |
|
|
515 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
516 | if (anfds [fd].events) |
|
|
517 | if (!fd_valid (fd) == -1 && errno == EBADF) |
|
|
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) |
|
|
529 | { |
|
|
530 | fd_kill (EV_A_ fd); |
|
|
531 | return; |
|
|
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 | } |
|
|
548 | } |
|
|
549 | |
|
|
550 | /*****************************************************************************/ |
|
|
551 | |
|
|
552 | static void |
|
|
553 | upheap (WT *heap, int k) |
|
|
554 | { |
|
|
555 | WT w = heap [k]; |
|
|
556 | |
|
|
557 | while (k && heap [k >> 1]->at > w->at) |
|
|
558 | { |
|
|
559 | heap [k] = heap [k >> 1]; |
|
|
560 | ((W)heap [k])->active = k + 1; |
|
|
561 | k >>= 1; |
|
|
562 | } |
|
|
563 | |
|
|
564 | heap [k] = w; |
|
|
565 | ((W)heap [k])->active = k + 1; |
|
|
566 | |
|
|
567 | } |
|
|
568 | |
|
|
569 | static void |
|
|
570 | downheap (WT *heap, int N, int k) |
|
|
571 | { |
|
|
572 | WT w = heap [k]; |
|
|
573 | |
|
|
574 | while (k < (N >> 1)) |
|
|
575 | { |
|
|
576 | int j = k << 1; |
|
|
577 | |
|
|
578 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
|
|
579 | ++j; |
|
|
580 | |
|
|
581 | if (w->at <= heap [j]->at) |
|
|
582 | break; |
|
|
583 | |
|
|
584 | heap [k] = heap [j]; |
|
|
585 | ((W)heap [k])->active = k + 1; |
|
|
586 | k = j; |
|
|
587 | } |
|
|
588 | |
|
|
589 | heap [k] = w; |
|
|
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); |
|
|
598 | } |
|
|
599 | |
|
|
600 | /*****************************************************************************/ |
|
|
601 | |
|
|
602 | typedef struct |
|
|
603 | { |
|
|
604 | WL head; |
|
|
605 | sig_atomic_t volatile gotsig; |
|
|
606 | } ANSIG; |
|
|
607 | |
|
|
608 | static ANSIG *signals; |
|
|
609 | static int signalmax; |
|
|
610 | |
|
|
611 | static int sigpipe [2]; |
|
|
612 | static sig_atomic_t volatile gotsig; |
|
|
613 | static struct ev_io sigev; |
|
|
614 | |
|
|
615 | static void |
|
|
616 | signals_init (ANSIG *base, int count) |
|
|
617 | { |
|
|
618 | while (count--) |
|
|
619 | { |
|
|
620 | base->head = 0; |
|
|
621 | base->gotsig = 0; |
|
|
622 | |
|
|
623 | ++base; |
|
|
624 | } |
|
|
625 | } |
|
|
626 | |
|
|
627 | static void |
|
|
628 | sighandler (int signum) |
|
|
629 | { |
|
|
630 | #if _WIN32 |
|
|
631 | signal (signum, sighandler); |
|
|
632 | #endif |
|
|
633 | |
|
|
634 | signals [signum - 1].gotsig = 1; |
|
|
635 | |
|
|
636 | if (!gotsig) |
|
|
637 | { |
|
|
638 | int old_errno = errno; |
|
|
639 | gotsig = 1; |
|
|
640 | write (sigpipe [1], &signum, 1); |
|
|
641 | errno = old_errno; |
|
|
642 | } |
|
|
643 | } |
|
|
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 | |
|
|
665 | static void |
|
|
666 | sigcb (EV_P_ struct ev_io *iow, int revents) |
|
|
667 | { |
|
|
668 | int signum; |
|
|
669 | |
|
|
670 | read (sigpipe [0], &revents, 1); |
|
|
671 | gotsig = 0; |
|
|
672 | |
|
|
673 | for (signum = signalmax; signum--; ) |
|
|
674 | if (signals [signum].gotsig) |
|
|
675 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
676 | } |
|
|
677 | |
|
|
678 | static void |
|
|
679 | fd_intern (int fd) |
|
|
680 | { |
|
|
681 | #ifdef _WIN32 |
|
|
682 | int arg = 1; |
|
|
683 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
684 | #else |
|
|
685 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
686 | fcntl (fd, 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]); |
|
|
695 | |
|
|
696 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
697 | ev_io_start (EV_A_ &sigev); |
|
|
698 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
699 | } |
|
|
700 | |
|
|
701 | /*****************************************************************************/ |
|
|
702 | |
|
|
703 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
704 | |
|
|
705 | #ifndef _WIN32 |
|
|
706 | |
|
|
707 | static struct ev_signal childev; |
|
|
708 | |
|
|
709 | #ifndef WCONTINUED |
|
|
710 | # define WCONTINUED 0 |
|
|
711 | #endif |
|
|
712 | |
|
|
713 | static void |
|
|
714 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
|
|
715 | { |
|
|
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 | { |
|
|
731 | int pid, status; |
|
|
732 | |
|
|
733 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
|
|
734 | { |
|
|
735 | /* make sure we are called again until all childs have been reaped */ |
|
|
736 | /* we need to do it this way so that the callback gets called before we continue */ |
|
|
737 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
738 | |
|
|
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 | } |
|
|
742 | } |
|
|
743 | |
|
|
744 | #endif |
|
|
745 | |
|
|
746 | /*****************************************************************************/ |
|
|
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 |
|
|
754 | #if EV_USE_EPOLL |
|
|
755 | # include "ev_epoll.c" |
|
|
756 | #endif |
|
|
757 | #if EV_USE_POLL |
|
|
758 | # include "ev_poll.c" |
|
|
759 | #endif |
|
|
760 | #if EV_USE_SELECT |
|
|
761 | # include "ev_select.c" |
|
|
762 | #endif |
|
|
763 | |
|
|
764 | int |
|
|
765 | ev_version_major (void) |
|
|
766 | { |
|
|
767 | return EV_VERSION_MAJOR; |
|
|
768 | } |
|
|
769 | |
|
|
770 | int |
|
|
771 | ev_version_minor (void) |
|
|
772 | { |
|
|
773 | return EV_VERSION_MINOR; |
|
|
774 | } |
|
|
775 | |
|
|
776 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
777 | static int |
|
|
778 | enable_secure (void) |
|
|
779 | { |
|
|
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) |
|
|
830 | { |
|
|
831 | #if EV_USE_MONOTONIC |
|
|
832 | { |
|
|
833 | struct timespec ts; |
|
|
834 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
835 | have_monotonic = 1; |
|
|
836 | } |
|
|
837 | #endif |
|
|
838 | |
|
|
839 | ev_rt_now = ev_time (); |
|
|
840 | mn_now = get_clock (); |
|
|
841 | now_floor = mn_now; |
|
|
842 | rtmn_diff = ev_rt_now - mn_now; |
|
|
843 | |
|
|
844 | if (!(flags & EVFLAG_NOENV) |
|
|
845 | && !enable_secure () |
|
|
846 | && getenv ("LIBEV_FLAGS")) |
|
|
847 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
848 | |
|
|
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 |
|
|
859 | #if EV_USE_EPOLL |
|
|
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); |
|
|
864 | #endif |
|
|
865 | #if EV_USE_SELECT |
|
|
866 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
|
|
867 | #endif |
|
|
868 | |
|
|
869 | ev_init (&sigev, sigcb); |
|
|
870 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
871 | } |
|
|
872 | } |
|
|
873 | |
|
|
874 | static void |
|
|
875 | loop_destroy (EV_P) |
393 | { |
876 | { |
394 | int i; |
877 | int i; |
395 | |
878 | |
396 | for (i = 0; i < pendingcnt; ++i) |
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); |
397 | { |
937 | } |
398 | ANPENDING *p = pendings + i; |
|
|
399 | |
938 | |
400 | if (p->w) |
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)) |
401 | { |
996 | { |
402 | p->w->pending = 0; |
997 | siginit (EV_A); |
403 | p->w->cb (p->w, p->events); |
998 | |
|
|
999 | #ifndef _WIN32 |
|
|
1000 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
1001 | ev_set_priority (&childev, EV_MAXPRI); |
|
|
1002 | ev_signal_start (EV_A_ &childev); |
|
|
1003 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
1004 | #endif |
404 | } |
1005 | } |
|
|
1006 | else |
|
|
1007 | ev_default_loop_ptr = 0; |
|
|
1008 | } |
|
|
1009 | |
|
|
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; |
|
|
1043 | } |
|
|
1044 | |
|
|
1045 | /*****************************************************************************/ |
|
|
1046 | |
|
|
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 |
|
|
1060 | call_pending (EV_P) |
|
|
1061 | { |
|
|
1062 | int pri; |
|
|
1063 | |
|
|
1064 | for (pri = NUMPRI; pri--; ) |
|
|
1065 | while (pendingcnt [pri]) |
|
|
1066 | { |
|
|
1067 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
|
|
1068 | |
|
|
1069 | if (expect_true (p->w)) |
|
|
1070 | { |
|
|
1071 | p->w->pending = 0; |
|
|
1072 | EV_CB_INVOKE (p->w, p->events); |
|
|
1073 | } |
405 | } |
1074 | } |
406 | |
|
|
407 | pendingcnt = 0; |
|
|
408 | } |
1075 | } |
409 | |
1076 | |
410 | static void |
1077 | inline void |
411 | timers_reify (struct ev_timer **timers, int timercnt, ev_tstamp now) |
1078 | timers_reify (EV_P) |
412 | { |
1079 | { |
413 | while (timercnt && timers [0]->at <= now) |
1080 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
414 | { |
1081 | { |
415 | 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))); |
416 | |
1085 | |
417 | /* first reschedule or stop timer */ |
1086 | /* first reschedule or stop timer */ |
418 | if (w->repeat) |
1087 | if (w->repeat) |
419 | { |
1088 | { |
420 | if (w->is_abs) |
1089 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
421 | w->at += floor ((now - w->at) / w->repeat + 1.) * w->repeat; |
1090 | |
422 | else |
|
|
423 | w->at = now + w->repeat; |
1091 | ((WT)w)->at += w->repeat; |
|
|
1092 | if (((WT)w)->at < mn_now) |
|
|
1093 | ((WT)w)->at = mn_now; |
424 | |
1094 | |
425 | assert (w->at > now); |
|
|
426 | |
|
|
427 | downheap (timers, timercnt, 0); |
1095 | downheap ((WT *)timers, timercnt, 0); |
428 | } |
1096 | } |
429 | else |
1097 | else |
|
|
1098 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1099 | |
|
|
1100 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
1101 | } |
|
|
1102 | } |
|
|
1103 | |
|
|
1104 | #if EV_PERIODICS |
|
|
1105 | inline void |
|
|
1106 | periodics_reify (EV_P) |
|
|
1107 | { |
|
|
1108 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
|
|
1109 | { |
|
|
1110 | struct ev_periodic *w = periodics [0]; |
|
|
1111 | |
|
|
1112 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
|
|
1113 | |
|
|
1114 | /* first reschedule or stop timer */ |
|
|
1115 | if (w->reschedule_cb) |
430 | { |
1116 | { |
431 | evtimer_stop (w); /* nonrepeating: stop timer */ |
1117 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); |
432 | --timercnt; /* maybe pass by reference instead? */ |
1118 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
|
|
1119 | downheap ((WT *)periodics, periodiccnt, 0); |
433 | } |
1120 | } |
|
|
1121 | else if (w->interval) |
|
|
1122 | { |
|
|
1123 | ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
|
|
1124 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
|
|
1125 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1126 | } |
|
|
1127 | else |
|
|
1128 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
434 | |
1129 | |
435 | event ((W)w, EV_TIMEOUT); |
1130 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
436 | } |
1131 | } |
437 | } |
1132 | } |
438 | |
1133 | |
439 | static void |
1134 | static void |
440 | time_update () |
1135 | periodics_reschedule (EV_P) |
441 | { |
1136 | { |
442 | int i; |
1137 | int i; |
|
|
1138 | |
|
|
1139 | /* adjust periodics after time jump */ |
|
|
1140 | for (i = 0; i < periodiccnt; ++i) |
|
|
1141 | { |
|
|
1142 | struct ev_periodic *w = periodics [i]; |
|
|
1143 | |
|
|
1144 | if (w->reschedule_cb) |
|
|
1145 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
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; |
443 | ev_now = ev_time (); |
1169 | ev_rt_now = ev_time (); |
444 | |
1170 | return 1; |
445 | if (have_monotonic) |
|
|
446 | { |
1171 | } |
447 | ev_tstamp odiff = diff; |
1172 | } |
448 | |
1173 | |
449 | /* detecting time jumps is much more difficult */ |
1174 | inline void |
450 | for (i = 2; --i; ) /* loop a few times, before making important decisions */ |
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)) |
451 | { |
1183 | { |
452 | now = get_clock (); |
1184 | ev_tstamp odiff = rtmn_diff; |
|
|
1185 | |
|
|
1186 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
1187 | { |
453 | diff = ev_now - now; |
1188 | rtmn_diff = ev_rt_now - mn_now; |
454 | |
1189 | |
455 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
1190 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
456 | return; /* all is well */ |
1191 | return; /* all is well */ |
457 | |
1192 | |
458 | ev_now = ev_time (); |
1193 | ev_rt_now = ev_time (); |
|
|
1194 | mn_now = get_clock (); |
|
|
1195 | now_floor = mn_now; |
|
|
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) */ |
459 | } |
1203 | } |
|
|
1204 | } |
|
|
1205 | else |
|
|
1206 | #endif |
|
|
1207 | { |
|
|
1208 | ev_rt_now = ev_time (); |
460 | |
1209 | |
461 | /* time jump detected, reschedule atimers */ |
1210 | if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
462 | for (i = 0; i < atimercnt; ++i) |
|
|
463 | { |
1211 | { |
464 | struct ev_timer *w = atimers [i]; |
1212 | #if EV_PERIODICS |
465 | w->at += ceil ((ev_now - w->at) / w->repeat + 1.) * w->repeat; |
1213 | periodics_reschedule (EV_A); |
|
|
1214 | #endif |
|
|
1215 | |
|
|
1216 | /* adjust timers. this is easy, as the offset is the same for all */ |
|
|
1217 | for (i = 0; i < timercnt; ++i) |
|
|
1218 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
466 | } |
1219 | } |
467 | } |
|
|
468 | else |
|
|
469 | { |
|
|
470 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
|
|
471 | /* time jump detected, adjust rtimers */ |
|
|
472 | for (i = 0; i < rtimercnt; ++i) |
|
|
473 | rtimers [i]->at += ev_now - now; |
|
|
474 | |
1220 | |
475 | now = ev_now; |
1221 | mn_now = ev_rt_now; |
476 | } |
1222 | } |
477 | } |
1223 | } |
478 | |
1224 | |
479 | int ev_loop_done; |
1225 | void |
|
|
1226 | ev_ref (EV_P) |
|
|
1227 | { |
|
|
1228 | ++activecnt; |
|
|
1229 | } |
480 | |
1230 | |
|
|
1231 | void |
|
|
1232 | ev_unref (EV_P) |
|
|
1233 | { |
|
|
1234 | --activecnt; |
|
|
1235 | } |
|
|
1236 | |
|
|
1237 | static int loop_done; |
|
|
1238 | |
|
|
1239 | void |
481 | void ev_loop (int flags) |
1240 | ev_loop (EV_P_ int flags) |
482 | { |
1241 | { |
483 | double block; |
1242 | double block; |
484 | ev_loop_done = flags & EVLOOP_ONESHOT; |
1243 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
485 | |
1244 | |
486 | if (checkcnt) |
1245 | while (activecnt) |
487 | { |
1246 | { |
488 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1247 | /* queue check watchers (and execute them) */ |
|
|
1248 | if (expect_false (preparecnt)) |
|
|
1249 | { |
|
|
1250 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
489 | call_pending (); |
1251 | call_pending (EV_A); |
490 | } |
1252 | } |
491 | |
1253 | |
492 | do |
1254 | /* we might have forked, so reify kernel state if necessary */ |
493 | { |
1255 | if (expect_false (postfork)) |
|
|
1256 | loop_fork (EV_A); |
|
|
1257 | |
494 | /* update fd-related kernel structures */ |
1258 | /* update fd-related kernel structures */ |
495 | fd_reify (); |
1259 | fd_reify (EV_A); |
496 | |
1260 | |
497 | /* calculate blocking time */ |
1261 | /* calculate blocking time */ |
|
|
1262 | |
|
|
1263 | /* we only need this for !monotonic clock or timers, but as we basically |
|
|
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 | { |
|
|
1271 | ev_rt_now = ev_time (); |
|
|
1272 | mn_now = ev_rt_now; |
|
|
1273 | } |
|
|
1274 | |
498 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
1275 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
499 | block = 0.; |
1276 | block = 0.; |
500 | else |
1277 | else |
501 | { |
1278 | { |
502 | block = MAX_BLOCKTIME; |
1279 | block = MAX_BLOCKTIME; |
503 | |
1280 | |
504 | if (rtimercnt) |
1281 | if (timercnt) |
505 | { |
1282 | { |
506 | ev_tstamp to = rtimers [0]->at - get_clock () + method_fudge; |
1283 | ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; |
507 | if (block > to) block = to; |
1284 | if (block > to) block = to; |
508 | } |
1285 | } |
509 | |
1286 | |
|
|
1287 | #if EV_PERIODICS |
510 | if (atimercnt) |
1288 | if (periodiccnt) |
511 | { |
1289 | { |
512 | ev_tstamp to = atimers [0]->at - ev_time () + method_fudge; |
1290 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; |
513 | if (block > to) block = to; |
1291 | if (block > to) block = to; |
514 | } |
1292 | } |
|
|
1293 | #endif |
515 | |
1294 | |
516 | if (block < 0.) block = 0.; |
1295 | if (expect_false (block < 0.)) block = 0.; |
517 | } |
1296 | } |
518 | |
1297 | |
519 | method_poll (block); |
1298 | backend_poll (EV_A_ block); |
520 | |
1299 | |
521 | /* update ev_now, do magic */ |
1300 | /* update ev_rt_now, do magic */ |
522 | time_update (); |
1301 | time_update (EV_A); |
523 | |
1302 | |
524 | /* queue pending timers and reschedule them */ |
1303 | /* queue pending timers and reschedule them */ |
525 | /* absolute timers first */ |
1304 | timers_reify (EV_A); /* relative timers called last */ |
526 | timers_reify (atimers, atimercnt, ev_now); |
1305 | #if EV_PERIODICS |
527 | /* relative timers second */ |
1306 | periodics_reify (EV_A); /* absolute timers called first */ |
528 | timers_reify (rtimers, rtimercnt, now); |
1307 | #endif |
529 | |
1308 | |
530 | /* queue idle watchers unless io or timers are pending */ |
1309 | /* queue idle watchers unless io or timers are pending */ |
531 | if (!pendingcnt) |
1310 | if (idlecnt && !any_pending (EV_A)) |
532 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
1311 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
533 | |
1312 | |
534 | /* queue check and possibly idle watchers */ |
1313 | /* queue check watchers, to be executed first */ |
|
|
1314 | if (expect_false (checkcnt)) |
535 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1315 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
536 | |
1316 | |
537 | call_pending (); |
1317 | call_pending (EV_A); |
|
|
1318 | |
|
|
1319 | if (expect_false (loop_done)) |
|
|
1320 | break; |
538 | } |
1321 | } |
539 | while (!ev_loop_done); |
1322 | |
|
|
1323 | if (loop_done != 2) |
|
|
1324 | loop_done = 0; |
|
|
1325 | } |
|
|
1326 | |
|
|
1327 | void |
|
|
1328 | ev_unloop (EV_P_ int how) |
|
|
1329 | { |
|
|
1330 | loop_done = how; |
540 | } |
1331 | } |
541 | |
1332 | |
542 | /*****************************************************************************/ |
1333 | /*****************************************************************************/ |
543 | |
1334 | |
544 | static void |
1335 | inline void |
545 | wlist_add (WL *head, WL elem) |
1336 | wlist_add (WL *head, WL elem) |
546 | { |
1337 | { |
547 | elem->next = *head; |
1338 | elem->next = *head; |
548 | *head = elem; |
1339 | *head = elem; |
549 | } |
1340 | } |
550 | |
1341 | |
551 | static void |
1342 | inline void |
552 | wlist_del (WL *head, WL elem) |
1343 | wlist_del (WL *head, WL elem) |
553 | { |
1344 | { |
554 | while (*head) |
1345 | while (*head) |
555 | { |
1346 | { |
556 | if (*head == elem) |
1347 | if (*head == elem) |
… | |
… | |
561 | |
1352 | |
562 | head = &(*head)->next; |
1353 | head = &(*head)->next; |
563 | } |
1354 | } |
564 | } |
1355 | } |
565 | |
1356 | |
566 | static void |
1357 | inline void |
|
|
1358 | ev_clear_pending (EV_P_ W w) |
|
|
1359 | { |
|
|
1360 | if (w->pending) |
|
|
1361 | { |
|
|
1362 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
|
|
1363 | w->pending = 0; |
|
|
1364 | } |
|
|
1365 | } |
|
|
1366 | |
|
|
1367 | inline void |
567 | ev_start (W w, int active) |
1368 | ev_start (EV_P_ W w, int active) |
568 | { |
1369 | { |
569 | w->pending = 0; |
1370 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1371 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1372 | |
570 | w->active = active; |
1373 | w->active = active; |
|
|
1374 | ev_ref (EV_A); |
571 | } |
1375 | } |
572 | |
1376 | |
573 | static void |
1377 | inline void |
574 | ev_stop (W w) |
1378 | ev_stop (EV_P_ W w) |
575 | { |
1379 | { |
576 | if (w->pending) |
1380 | ev_unref (EV_A); |
577 | pendings [w->pending - 1].w = 0; |
|
|
578 | |
|
|
579 | w->active = 0; |
1381 | w->active = 0; |
580 | } |
1382 | } |
581 | |
1383 | |
582 | /*****************************************************************************/ |
1384 | /*****************************************************************************/ |
583 | |
1385 | |
584 | void |
1386 | void |
585 | evio_start (struct ev_io *w) |
1387 | ev_io_start (EV_P_ struct ev_io *w) |
|
|
1388 | { |
|
|
1389 | int fd = w->fd; |
|
|
1390 | |
|
|
1391 | if (expect_false (ev_is_active (w))) |
|
|
1392 | return; |
|
|
1393 | |
|
|
1394 | assert (("ev_io_start called with negative fd", fd >= 0)); |
|
|
1395 | |
|
|
1396 | ev_start (EV_A_ (W)w, 1); |
|
|
1397 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
|
|
1398 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
|
|
1399 | |
|
|
1400 | fd_change (EV_A_ fd); |
|
|
1401 | } |
|
|
1402 | |
|
|
1403 | void |
|
|
1404 | ev_io_stop (EV_P_ struct ev_io *w) |
|
|
1405 | { |
|
|
1406 | ev_clear_pending (EV_A_ (W)w); |
|
|
1407 | if (expect_false (!ev_is_active (w))) |
|
|
1408 | return; |
|
|
1409 | |
|
|
1410 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
1411 | |
|
|
1412 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
|
|
1413 | ev_stop (EV_A_ (W)w); |
|
|
1414 | |
|
|
1415 | fd_change (EV_A_ w->fd); |
|
|
1416 | } |
|
|
1417 | |
|
|
1418 | void |
|
|
1419 | ev_timer_start (EV_P_ struct ev_timer *w) |
|
|
1420 | { |
|
|
1421 | if (expect_false (ev_is_active (w))) |
|
|
1422 | return; |
|
|
1423 | |
|
|
1424 | ((WT)w)->at += mn_now; |
|
|
1425 | |
|
|
1426 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
|
|
1427 | |
|
|
1428 | ev_start (EV_A_ (W)w, ++timercnt); |
|
|
1429 | array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2); |
|
|
1430 | timers [timercnt - 1] = w; |
|
|
1431 | upheap ((WT *)timers, timercnt - 1); |
|
|
1432 | |
|
|
1433 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1434 | } |
|
|
1435 | |
|
|
1436 | void |
|
|
1437 | ev_timer_stop (EV_P_ struct ev_timer *w) |
|
|
1438 | { |
|
|
1439 | ev_clear_pending (EV_A_ (W)w); |
|
|
1440 | if (expect_false (!ev_is_active (w))) |
|
|
1441 | return; |
|
|
1442 | |
|
|
1443 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1444 | |
|
|
1445 | if (expect_true (((W)w)->active < timercnt--)) |
|
|
1446 | { |
|
|
1447 | timers [((W)w)->active - 1] = timers [timercnt]; |
|
|
1448 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
|
|
1449 | } |
|
|
1450 | |
|
|
1451 | ((WT)w)->at -= mn_now; |
|
|
1452 | |
|
|
1453 | ev_stop (EV_A_ (W)w); |
|
|
1454 | } |
|
|
1455 | |
|
|
1456 | void |
|
|
1457 | ev_timer_again (EV_P_ struct ev_timer *w) |
586 | { |
1458 | { |
587 | if (ev_is_active (w)) |
1459 | if (ev_is_active (w)) |
|
|
1460 | { |
|
|
1461 | if (w->repeat) |
|
|
1462 | { |
|
|
1463 | ((WT)w)->at = mn_now + w->repeat; |
|
|
1464 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
|
|
1465 | } |
|
|
1466 | else |
|
|
1467 | ev_timer_stop (EV_A_ w); |
|
|
1468 | } |
|
|
1469 | else if (w->repeat) |
|
|
1470 | { |
|
|
1471 | w->at = w->repeat; |
|
|
1472 | ev_timer_start (EV_A_ w); |
|
|
1473 | } |
|
|
1474 | } |
|
|
1475 | |
|
|
1476 | #if EV_PERIODICS |
|
|
1477 | void |
|
|
1478 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
|
|
1479 | { |
|
|
1480 | if (expect_false (ev_is_active (w))) |
588 | return; |
1481 | return; |
589 | |
1482 | |
590 | int fd = w->fd; |
1483 | if (w->reschedule_cb) |
|
|
1484 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1485 | else if (w->interval) |
|
|
1486 | { |
|
|
1487 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
|
|
1488 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
|
|
1489 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1490 | } |
591 | |
1491 | |
592 | ev_start ((W)w, 1); |
1492 | ev_start (EV_A_ (W)w, ++periodiccnt); |
593 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1493 | array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); |
594 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1494 | periodics [periodiccnt - 1] = w; |
|
|
1495 | upheap ((WT *)periodics, periodiccnt - 1); |
595 | |
1496 | |
596 | ++fdchangecnt; |
1497 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
597 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
598 | fdchanges [fdchangecnt - 1] = fd; |
|
|
599 | } |
1498 | } |
600 | |
1499 | |
601 | void |
1500 | void |
602 | evio_stop (struct ev_io *w) |
1501 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
603 | { |
1502 | { |
|
|
1503 | ev_clear_pending (EV_A_ (W)w); |
604 | if (!ev_is_active (w)) |
1504 | if (expect_false (!ev_is_active (w))) |
605 | return; |
1505 | return; |
606 | |
1506 | |
607 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1507 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1508 | |
|
|
1509 | if (expect_true (((W)w)->active < periodiccnt--)) |
|
|
1510 | { |
|
|
1511 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
|
|
1512 | adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
|
|
1513 | } |
|
|
1514 | |
608 | ev_stop ((W)w); |
1515 | ev_stop (EV_A_ (W)w); |
609 | |
|
|
610 | ++fdchangecnt; |
|
|
611 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
612 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
613 | } |
1516 | } |
614 | |
1517 | |
615 | 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 |
616 | evtimer_start (struct ev_timer *w) |
1528 | ev_idle_start (EV_P_ struct ev_idle *w) |
617 | { |
1529 | { |
618 | if (ev_is_active (w)) |
1530 | if (expect_false (ev_is_active (w))) |
619 | return; |
1531 | return; |
620 | |
1532 | |
621 | if (w->is_abs) |
|
|
622 | { |
|
|
623 | /* this formula differs from the one in timer_reify becuse we do not round up */ |
|
|
624 | if (w->repeat) |
|
|
625 | w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat; |
|
|
626 | |
|
|
627 | ev_start ((W)w, ++atimercnt); |
1533 | ev_start (EV_A_ (W)w, ++idlecnt); |
628 | array_needsize (atimers, atimermax, atimercnt, ); |
1534 | array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2); |
629 | atimers [atimercnt - 1] = w; |
1535 | idles [idlecnt - 1] = w; |
630 | upheap (atimers, atimercnt - 1); |
|
|
631 | } |
|
|
632 | else |
|
|
633 | { |
|
|
634 | w->at += now; |
|
|
635 | |
|
|
636 | ev_start ((W)w, ++rtimercnt); |
|
|
637 | array_needsize (rtimers, rtimermax, rtimercnt, ); |
|
|
638 | rtimers [rtimercnt - 1] = w; |
|
|
639 | upheap (rtimers, rtimercnt - 1); |
|
|
640 | } |
|
|
641 | |
|
|
642 | } |
1536 | } |
643 | |
1537 | |
644 | void |
1538 | void |
645 | evtimer_stop (struct ev_timer *w) |
1539 | ev_idle_stop (EV_P_ struct ev_idle *w) |
646 | { |
1540 | { |
|
|
1541 | ev_clear_pending (EV_A_ (W)w); |
647 | if (!ev_is_active (w)) |
1542 | if (expect_false (!ev_is_active (w))) |
648 | return; |
1543 | return; |
649 | |
1544 | |
650 | if (w->is_abs) |
1545 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
651 | { |
|
|
652 | if (w->active < atimercnt--) |
|
|
653 | { |
|
|
654 | atimers [w->active - 1] = atimers [atimercnt]; |
|
|
655 | downheap (atimers, atimercnt, w->active - 1); |
|
|
656 | } |
|
|
657 | } |
|
|
658 | else |
|
|
659 | { |
|
|
660 | if (w->active < rtimercnt--) |
|
|
661 | { |
|
|
662 | rtimers [w->active - 1] = rtimers [rtimercnt]; |
|
|
663 | downheap (rtimers, rtimercnt, w->active - 1); |
|
|
664 | } |
|
|
665 | } |
|
|
666 | |
|
|
667 | ev_stop ((W)w); |
1546 | ev_stop (EV_A_ (W)w); |
668 | } |
1547 | } |
669 | |
1548 | |
670 | void |
1549 | void |
671 | evsignal_start (struct ev_signal *w) |
1550 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
672 | { |
1551 | { |
673 | if (ev_is_active (w)) |
1552 | if (expect_false (ev_is_active (w))) |
674 | return; |
1553 | return; |
675 | |
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 | |
|
|
1606 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1607 | |
676 | ev_start ((W)w, 1); |
1608 | ev_start (EV_A_ (W)w, 1); |
677 | array_needsize (signals, signalmax, w->signum, signals_init); |
1609 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
678 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1610 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
679 | |
1611 | |
680 | if (!w->next) |
1612 | if (!((WL)w)->next) |
681 | { |
1613 | { |
|
|
1614 | #if _WIN32 |
|
|
1615 | signal (w->signum, sighandler); |
|
|
1616 | #else |
682 | struct sigaction sa; |
1617 | struct sigaction sa; |
683 | sa.sa_handler = sighandler; |
1618 | sa.sa_handler = sighandler; |
684 | sigfillset (&sa.sa_mask); |
1619 | sigfillset (&sa.sa_mask); |
685 | sa.sa_flags = 0; |
1620 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
686 | sigaction (w->signum, &sa, 0); |
1621 | sigaction (w->signum, &sa, 0); |
|
|
1622 | #endif |
687 | } |
1623 | } |
688 | } |
1624 | } |
689 | |
1625 | |
690 | void |
1626 | void |
691 | evsignal_stop (struct ev_signal *w) |
1627 | ev_signal_stop (EV_P_ struct ev_signal *w) |
692 | { |
1628 | { |
|
|
1629 | ev_clear_pending (EV_A_ (W)w); |
693 | if (!ev_is_active (w)) |
1630 | if (expect_false (!ev_is_active (w))) |
694 | return; |
1631 | return; |
695 | |
1632 | |
696 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1633 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
697 | ev_stop ((W)w); |
1634 | ev_stop (EV_A_ (W)w); |
698 | |
1635 | |
699 | if (!signals [w->signum - 1].head) |
1636 | if (!signals [w->signum - 1].head) |
700 | signal (w->signum, SIG_DFL); |
1637 | signal (w->signum, SIG_DFL); |
701 | } |
1638 | } |
702 | |
1639 | |
703 | void evidle_start (struct ev_idle *w) |
1640 | void |
|
|
1641 | ev_child_start (EV_P_ struct ev_child *w) |
704 | { |
1642 | { |
|
|
1643 | #if EV_MULTIPLICITY |
|
|
1644 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1645 | #endif |
705 | if (ev_is_active (w)) |
1646 | if (expect_false (ev_is_active (w))) |
706 | return; |
1647 | return; |
707 | |
1648 | |
708 | ev_start ((W)w, ++idlecnt); |
1649 | ev_start (EV_A_ (W)w, 1); |
709 | array_needsize (idles, idlemax, idlecnt, ); |
1650 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
710 | idles [idlecnt - 1] = w; |
|
|
711 | } |
1651 | } |
712 | |
1652 | |
713 | void evidle_stop (struct ev_idle *w) |
1653 | void |
|
|
1654 | ev_child_stop (EV_P_ struct ev_child *w) |
714 | { |
1655 | { |
715 | idles [w->active - 1] = idles [--idlecnt]; |
1656 | ev_clear_pending (EV_A_ (W)w); |
716 | ev_stop ((W)w); |
1657 | if (expect_false (!ev_is_active (w))) |
717 | } |
|
|
718 | |
|
|
719 | void evcheck_start (struct ev_check *w) |
|
|
720 | { |
|
|
721 | if (ev_is_active (w)) |
|
|
722 | return; |
1658 | return; |
723 | |
1659 | |
724 | ev_start ((W)w, ++checkcnt); |
1660 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
725 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
726 | checks [checkcnt - 1] = w; |
|
|
727 | } |
|
|
728 | |
|
|
729 | void evcheck_stop (struct ev_check *w) |
|
|
730 | { |
|
|
731 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
732 | ev_stop ((W)w); |
1661 | ev_stop (EV_A_ (W)w); |
733 | } |
1662 | } |
734 | |
1663 | |
735 | /*****************************************************************************/ |
1664 | /*****************************************************************************/ |
736 | |
1665 | |
737 | #if 0 |
1666 | struct ev_once |
738 | |
|
|
739 | static void |
|
|
740 | sin_cb (struct ev_io *w, int revents) |
|
|
741 | { |
1667 | { |
742 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
743 | } |
|
|
744 | |
|
|
745 | static void |
|
|
746 | ocb (struct ev_timer *w, int revents) |
|
|
747 | { |
|
|
748 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
749 | evtimer_stop (w); |
|
|
750 | evtimer_start (w); |
|
|
751 | } |
|
|
752 | |
|
|
753 | static void |
|
|
754 | scb (struct ev_signal *w, int revents) |
|
|
755 | { |
|
|
756 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
757 | } |
|
|
758 | |
|
|
759 | static void |
|
|
760 | gcb (struct ev_signal *w, int revents) |
|
|
761 | { |
|
|
762 | fprintf (stderr, "generic %x\n", revents); |
|
|
763 | } |
|
|
764 | |
|
|
765 | int main (void) |
|
|
766 | { |
|
|
767 | struct ev_io sin; |
1668 | struct ev_io io; |
768 | |
|
|
769 | ev_init (0); |
|
|
770 | |
|
|
771 | evw_init (&sin, sin_cb, 55); |
|
|
772 | evio_set (&sin, 0, EV_READ); |
|
|
773 | evio_start (&sin); |
|
|
774 | |
|
|
775 | struct ev_timer t[10000]; |
|
|
776 | |
|
|
777 | #if 0 |
|
|
778 | int i; |
|
|
779 | for (i = 0; i < 10000; ++i) |
|
|
780 | { |
|
|
781 | struct ev_timer *w = t + i; |
|
|
782 | evw_init (w, ocb, i); |
|
|
783 | evtimer_set_abs (w, drand48 (), 0.99775533); |
|
|
784 | evtimer_start (w); |
|
|
785 | if (drand48 () < 0.5) |
|
|
786 | evtimer_stop (w); |
|
|
787 | } |
|
|
788 | #endif |
|
|
789 | |
|
|
790 | struct ev_timer t1; |
1669 | struct ev_timer to; |
791 | evw_init (&t1, ocb, 0); |
1670 | void (*cb)(int revents, void *arg); |
792 | evtimer_set_abs (&t1, 5, 10); |
1671 | void *arg; |
793 | evtimer_start (&t1); |
1672 | }; |
794 | |
1673 | |
795 | struct ev_signal sig; |
1674 | static void |
796 | evw_init (&sig, scb, 65535); |
1675 | once_cb (EV_P_ struct ev_once *once, int revents) |
797 | evsignal_set (&sig, SIGQUIT); |
1676 | { |
798 | evsignal_start (&sig); |
1677 | void (*cb)(int revents, void *arg) = once->cb; |
|
|
1678 | void *arg = once->arg; |
799 | |
1679 | |
800 | struct ev_check cw; |
1680 | ev_io_stop (EV_A_ &once->io); |
801 | evw_init (&cw, gcb, 0); |
1681 | ev_timer_stop (EV_A_ &once->to); |
802 | evcheck_start (&cw); |
1682 | ev_free (once); |
803 | |
1683 | |
804 | struct ev_idle iw; |
1684 | cb (revents, arg); |
805 | evw_init (&iw, gcb, 0); |
1685 | } |
806 | evidle_start (&iw); |
|
|
807 | |
1686 | |
808 | ev_loop (0); |
1687 | static void |
|
|
1688 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
|
|
1689 | { |
|
|
1690 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
|
|
1691 | } |
809 | |
1692 | |
|
|
1693 | static void |
|
|
1694 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
|
|
1695 | { |
|
|
1696 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
|
|
1697 | } |
|
|
1698 | |
|
|
1699 | void |
|
|
1700 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
|
|
1701 | { |
|
|
1702 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
|
|
1703 | |
|
|
1704 | if (expect_false (!once)) |
|
|
1705 | { |
|
|
1706 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
810 | return 0; |
1707 | return; |
811 | } |
1708 | } |
812 | |
1709 | |
813 | #endif |
1710 | once->cb = cb; |
|
|
1711 | once->arg = arg; |
814 | |
1712 | |
|
|
1713 | ev_init (&once->io, once_cb_io); |
|
|
1714 | if (fd >= 0) |
|
|
1715 | { |
|
|
1716 | ev_io_set (&once->io, fd, events); |
|
|
1717 | ev_io_start (EV_A_ &once->io); |
|
|
1718 | } |
815 | |
1719 | |
|
|
1720 | ev_init (&once->to, once_cb_to); |
|
|
1721 | if (timeout >= 0.) |
|
|
1722 | { |
|
|
1723 | ev_timer_set (&once->to, timeout, 0.); |
|
|
1724 | ev_timer_start (EV_A_ &once->to); |
|
|
1725 | } |
|
|
1726 | } |
816 | |
1727 | |
|
|
1728 | #ifdef __cplusplus |
|
|
1729 | } |
|
|
1730 | #endif |
817 | |
1731 | |