|
|
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 | # include "config.h" |
|
|
38 | |
|
|
39 | # if HAVE_CLOCK_GETTIME |
|
|
40 | # ifndef EV_USE_MONOTONIC |
|
|
41 | # define EV_USE_MONOTONIC 1 |
|
|
42 | # endif |
|
|
43 | # ifndef EV_USE_REALTIME |
|
|
44 | # define EV_USE_REALTIME 1 |
|
|
45 | # endif |
|
|
46 | # else |
|
|
47 | # ifndef EV_USE_MONOTONIC |
|
|
48 | # define EV_USE_MONOTONIC 0 |
|
|
49 | # endif |
|
|
50 | # ifndef EV_USE_REALTIME |
|
|
51 | # define EV_USE_REALTIME 0 |
|
|
52 | # endif |
|
|
53 | # endif |
|
|
54 | |
|
|
55 | # ifndef EV_USE_SELECT |
|
|
56 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
|
|
57 | # define EV_USE_SELECT 1 |
|
|
58 | # else |
|
|
59 | # define EV_USE_SELECT 0 |
|
|
60 | # endif |
|
|
61 | # endif |
|
|
62 | |
|
|
63 | # ifndef EV_USE_POLL |
|
|
64 | # if HAVE_POLL && HAVE_POLL_H |
|
|
65 | # define EV_USE_POLL 1 |
|
|
66 | # else |
|
|
67 | # define EV_USE_POLL 0 |
|
|
68 | # endif |
|
|
69 | # endif |
|
|
70 | |
|
|
71 | # ifndef EV_USE_EPOLL |
|
|
72 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
|
|
73 | # define EV_USE_EPOLL 1 |
|
|
74 | # else |
|
|
75 | # define EV_USE_EPOLL 0 |
|
|
76 | # endif |
|
|
77 | # endif |
|
|
78 | |
|
|
79 | # ifndef EV_USE_KQUEUE |
|
|
80 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
|
|
81 | # define EV_USE_KQUEUE 1 |
|
|
82 | # else |
|
|
83 | # define EV_USE_KQUEUE 0 |
|
|
84 | # endif |
|
|
85 | # endif |
|
|
86 | |
|
|
87 | # ifndef EV_USE_PORT |
|
|
88 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
|
|
89 | # define EV_USE_PORT 1 |
|
|
90 | # else |
|
|
91 | # define EV_USE_PORT 0 |
|
|
92 | # endif |
|
|
93 | # endif |
|
|
94 | |
|
|
95 | #endif |
|
|
96 | |
1 | #include <math.h> |
97 | #include <math.h> |
2 | #include <stdlib.h> |
98 | #include <stdlib.h> |
3 | #include <unistd.h> |
|
|
4 | #include <fcntl.h> |
99 | #include <fcntl.h> |
5 | #include <signal.h> |
100 | #include <stddef.h> |
6 | |
101 | |
7 | #include <stdio.h> |
102 | #include <stdio.h> |
8 | |
103 | |
9 | #include <assert.h> |
104 | #include <assert.h> |
10 | #include <errno.h> |
105 | #include <errno.h> |
11 | #include <sys/time.h> |
106 | #include <sys/types.h> |
12 | #include <time.h> |
107 | #include <time.h> |
13 | |
108 | |
14 | #define HAVE_EPOLL 1 |
109 | #include <signal.h> |
15 | |
110 | |
16 | #ifndef HAVE_MONOTONIC |
111 | #ifndef _WIN32 |
17 | # ifdef CLOCK_MONOTONIC |
112 | # include <unistd.h> |
18 | # define HAVE_MONOTONIC 1 |
113 | # include <sys/time.h> |
|
|
114 | # include <sys/wait.h> |
|
|
115 | #else |
|
|
116 | # define WIN32_LEAN_AND_MEAN |
|
|
117 | # include <windows.h> |
|
|
118 | # ifndef EV_SELECT_IS_WINSOCKET |
|
|
119 | # define EV_SELECT_IS_WINSOCKET 1 |
19 | # endif |
120 | # endif |
20 | #endif |
121 | #endif |
21 | |
122 | |
|
|
123 | /**/ |
|
|
124 | |
|
|
125 | #ifndef EV_USE_MONOTONIC |
|
|
126 | # define EV_USE_MONOTONIC 0 |
|
|
127 | #endif |
|
|
128 | |
|
|
129 | #ifndef EV_USE_REALTIME |
|
|
130 | # define EV_USE_REALTIME 0 |
|
|
131 | #endif |
|
|
132 | |
22 | #ifndef HAVE_SELECT |
133 | #ifndef EV_USE_SELECT |
23 | # define HAVE_SELECT 1 |
134 | # define EV_USE_SELECT 1 |
|
|
135 | #endif |
|
|
136 | |
|
|
137 | #ifndef EV_USE_POLL |
|
|
138 | # ifdef _WIN32 |
|
|
139 | # define EV_USE_POLL 0 |
|
|
140 | # else |
|
|
141 | # define EV_USE_POLL 1 |
24 | #endif |
142 | # endif |
|
|
143 | #endif |
25 | |
144 | |
26 | #ifndef HAVE_EPOLL |
145 | #ifndef EV_USE_EPOLL |
27 | # define HAVE_EPOLL 0 |
146 | # define EV_USE_EPOLL 0 |
28 | #endif |
147 | #endif |
29 | |
148 | |
|
|
149 | #ifndef EV_USE_KQUEUE |
|
|
150 | # define EV_USE_KQUEUE 0 |
|
|
151 | #endif |
|
|
152 | |
|
|
153 | #ifndef EV_USE_PORT |
|
|
154 | # define EV_USE_PORT 0 |
|
|
155 | #endif |
|
|
156 | |
|
|
157 | /**/ |
|
|
158 | |
|
|
159 | #ifndef CLOCK_MONOTONIC |
|
|
160 | # undef EV_USE_MONOTONIC |
|
|
161 | # define EV_USE_MONOTONIC 0 |
|
|
162 | #endif |
|
|
163 | |
30 | #ifndef HAVE_REALTIME |
164 | #ifndef CLOCK_REALTIME |
31 | # define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
165 | # undef EV_USE_REALTIME |
|
|
166 | # define EV_USE_REALTIME 0 |
32 | #endif |
167 | #endif |
|
|
168 | |
|
|
169 | #if EV_SELECT_IS_WINSOCKET |
|
|
170 | # include <winsock.h> |
|
|
171 | #endif |
|
|
172 | |
|
|
173 | /**/ |
33 | |
174 | |
34 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
175 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
35 | #define MAX_BLOCKTIME 60. |
176 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
|
|
177 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
|
|
178 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ |
36 | |
179 | |
|
|
180 | #ifdef EV_H |
|
|
181 | # include EV_H |
|
|
182 | #else |
37 | #include "ev.h" |
183 | # include "ev.h" |
|
|
184 | #endif |
|
|
185 | |
|
|
186 | #if __GNUC__ >= 3 |
|
|
187 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
|
|
188 | # define inline static inline |
|
|
189 | #else |
|
|
190 | # define expect(expr,value) (expr) |
|
|
191 | # define inline static |
|
|
192 | #endif |
|
|
193 | |
|
|
194 | #define expect_false(expr) expect ((expr) != 0, 0) |
|
|
195 | #define expect_true(expr) expect ((expr) != 0, 1) |
|
|
196 | |
|
|
197 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
|
|
198 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
|
|
199 | |
|
|
200 | #define EMPTY0 /* required for microsofts broken pseudo-c compiler */ |
|
|
201 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
38 | |
202 | |
39 | typedef struct ev_watcher *W; |
203 | typedef struct ev_watcher *W; |
40 | typedef struct ev_watcher_list *WL; |
204 | typedef struct ev_watcher_list *WL; |
41 | typedef struct ev_watcher_time *WT; |
205 | typedef struct ev_watcher_time *WT; |
42 | |
206 | |
43 | static ev_tstamp now, diff; /* monotonic clock */ |
207 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
|
|
208 | |
|
|
209 | #ifdef _WIN32 |
|
|
210 | # include "ev_win32.c" |
|
|
211 | #endif |
|
|
212 | |
|
|
213 | /*****************************************************************************/ |
|
|
214 | |
|
|
215 | static void (*syserr_cb)(const char *msg); |
|
|
216 | |
|
|
217 | void ev_set_syserr_cb (void (*cb)(const char *msg)) |
|
|
218 | { |
|
|
219 | syserr_cb = cb; |
|
|
220 | } |
|
|
221 | |
|
|
222 | static void |
|
|
223 | syserr (const char *msg) |
|
|
224 | { |
|
|
225 | if (!msg) |
|
|
226 | msg = "(libev) system error"; |
|
|
227 | |
|
|
228 | if (syserr_cb) |
|
|
229 | syserr_cb (msg); |
|
|
230 | else |
|
|
231 | { |
|
|
232 | perror (msg); |
|
|
233 | abort (); |
|
|
234 | } |
|
|
235 | } |
|
|
236 | |
|
|
237 | static void *(*alloc)(void *ptr, long size); |
|
|
238 | |
|
|
239 | void ev_set_allocator (void *(*cb)(void *ptr, long size)) |
|
|
240 | { |
|
|
241 | alloc = cb; |
|
|
242 | } |
|
|
243 | |
|
|
244 | static void * |
|
|
245 | ev_realloc (void *ptr, long size) |
|
|
246 | { |
|
|
247 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
|
|
248 | |
|
|
249 | if (!ptr && size) |
|
|
250 | { |
|
|
251 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
|
|
252 | abort (); |
|
|
253 | } |
|
|
254 | |
|
|
255 | return ptr; |
|
|
256 | } |
|
|
257 | |
|
|
258 | #define ev_malloc(size) ev_realloc (0, (size)) |
|
|
259 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
|
|
260 | |
|
|
261 | /*****************************************************************************/ |
|
|
262 | |
|
|
263 | typedef struct |
|
|
264 | { |
|
|
265 | WL head; |
|
|
266 | unsigned char events; |
|
|
267 | unsigned char reify; |
|
|
268 | #if EV_SELECT_IS_WINSOCKET |
|
|
269 | SOCKET handle; |
|
|
270 | #endif |
|
|
271 | } ANFD; |
|
|
272 | |
|
|
273 | typedef struct |
|
|
274 | { |
|
|
275 | W w; |
|
|
276 | int events; |
|
|
277 | } ANPENDING; |
|
|
278 | |
|
|
279 | #if EV_MULTIPLICITY |
|
|
280 | |
|
|
281 | struct ev_loop |
|
|
282 | { |
|
|
283 | ev_tstamp ev_rt_now; |
|
|
284 | #define ev_rt_now ((loop)->ev_rt_now) |
|
|
285 | #define VAR(name,decl) decl; |
|
|
286 | #include "ev_vars.h" |
|
|
287 | #undef VAR |
|
|
288 | }; |
|
|
289 | #include "ev_wrap.h" |
|
|
290 | |
|
|
291 | static struct ev_loop default_loop_struct; |
|
|
292 | struct ev_loop *ev_default_loop_ptr; |
|
|
293 | |
|
|
294 | #else |
|
|
295 | |
44 | ev_tstamp ev_now; |
296 | ev_tstamp ev_rt_now; |
45 | int ev_method; |
297 | #define VAR(name,decl) static decl; |
|
|
298 | #include "ev_vars.h" |
|
|
299 | #undef VAR |
46 | |
300 | |
47 | static int have_monotonic; /* runtime */ |
301 | static int ev_default_loop_ptr; |
48 | |
302 | |
49 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
303 | #endif |
50 | static void (*method_modify)(int fd, int oev, int nev); |
|
|
51 | static void (*method_poll)(ev_tstamp timeout); |
|
|
52 | |
304 | |
53 | /*****************************************************************************/ |
305 | /*****************************************************************************/ |
54 | |
306 | |
55 | ev_tstamp |
307 | ev_tstamp |
56 | ev_time (void) |
308 | ev_time (void) |
57 | { |
309 | { |
58 | #if HAVE_REALTIME |
310 | #if EV_USE_REALTIME |
59 | struct timespec ts; |
311 | struct timespec ts; |
60 | clock_gettime (CLOCK_REALTIME, &ts); |
312 | clock_gettime (CLOCK_REALTIME, &ts); |
61 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
313 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
62 | #else |
314 | #else |
63 | struct timeval tv; |
315 | struct timeval tv; |
64 | gettimeofday (&tv, 0); |
316 | gettimeofday (&tv, 0); |
65 | return tv.tv_sec + tv.tv_usec * 1e-6; |
317 | return tv.tv_sec + tv.tv_usec * 1e-6; |
66 | #endif |
318 | #endif |
67 | } |
319 | } |
68 | |
320 | |
69 | static ev_tstamp |
321 | inline ev_tstamp |
70 | get_clock (void) |
322 | get_clock (void) |
71 | { |
323 | { |
72 | #if HAVE_MONOTONIC |
324 | #if EV_USE_MONOTONIC |
73 | if (have_monotonic) |
325 | if (expect_true (have_monotonic)) |
74 | { |
326 | { |
75 | struct timespec ts; |
327 | struct timespec ts; |
76 | clock_gettime (CLOCK_MONOTONIC, &ts); |
328 | clock_gettime (CLOCK_MONOTONIC, &ts); |
77 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
329 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
78 | } |
330 | } |
79 | #endif |
331 | #endif |
80 | |
332 | |
81 | return ev_time (); |
333 | return ev_time (); |
82 | } |
334 | } |
83 | |
335 | |
|
|
336 | #if EV_MULTIPLICITY |
|
|
337 | ev_tstamp |
|
|
338 | ev_now (EV_P) |
|
|
339 | { |
|
|
340 | return ev_rt_now; |
|
|
341 | } |
|
|
342 | #endif |
|
|
343 | |
|
|
344 | #define array_roundsize(type,n) (((n) | 4) & ~3) |
|
|
345 | |
84 | #define array_needsize(base,cur,cnt,init) \ |
346 | #define array_needsize(type,base,cur,cnt,init) \ |
85 | if ((cnt) > cur) \ |
347 | if (expect_false ((cnt) > cur)) \ |
86 | { \ |
348 | { \ |
87 | int newcnt = cur ? cur << 1 : 16; \ |
349 | int newcnt = cur; \ |
|
|
350 | do \ |
|
|
351 | { \ |
|
|
352 | newcnt = array_roundsize (type, newcnt << 1); \ |
|
|
353 | } \ |
|
|
354 | while ((cnt) > newcnt); \ |
|
|
355 | \ |
88 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
356 | base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\ |
89 | init (base + cur, newcnt - cur); \ |
357 | init (base + cur, newcnt - cur); \ |
90 | cur = newcnt; \ |
358 | cur = newcnt; \ |
91 | } |
359 | } |
|
|
360 | |
|
|
361 | #define array_slim(type,stem) \ |
|
|
362 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
|
|
363 | { \ |
|
|
364 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
|
|
365 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
|
|
366 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
|
|
367 | } |
|
|
368 | |
|
|
369 | #define array_free(stem, idx) \ |
|
|
370 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
92 | |
371 | |
93 | /*****************************************************************************/ |
372 | /*****************************************************************************/ |
94 | |
373 | |
95 | typedef struct |
|
|
96 | { |
|
|
97 | struct ev_io *head; |
|
|
98 | unsigned char wev, rev; /* want, received event set */ |
|
|
99 | } ANFD; |
|
|
100 | |
|
|
101 | static ANFD *anfds; |
|
|
102 | static int anfdmax; |
|
|
103 | |
|
|
104 | static int *fdchanges; |
|
|
105 | static int fdchangemax, fdchangecnt; |
|
|
106 | |
|
|
107 | static void |
374 | static void |
108 | anfds_init (ANFD *base, int count) |
375 | anfds_init (ANFD *base, int count) |
109 | { |
376 | { |
110 | while (count--) |
377 | while (count--) |
111 | { |
378 | { |
112 | base->head = 0; |
379 | base->head = 0; |
113 | base->wev = base->rev = EV_NONE; |
380 | base->events = EV_NONE; |
|
|
381 | base->reify = 0; |
|
|
382 | |
114 | ++base; |
383 | ++base; |
115 | } |
384 | } |
116 | } |
385 | } |
117 | |
386 | |
118 | typedef struct |
387 | void |
|
|
388 | ev_feed_event (EV_P_ void *w, int revents) |
119 | { |
389 | { |
120 | W w; |
390 | W w_ = (W)w; |
121 | int events; |
|
|
122 | } ANPENDING; |
|
|
123 | |
391 | |
124 | static ANPENDING *pendings; |
392 | if (expect_false (w_->pending)) |
125 | static int pendingmax, pendingcnt; |
393 | { |
|
|
394 | pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; |
|
|
395 | return; |
|
|
396 | } |
126 | |
397 | |
127 | static void |
|
|
128 | event (W w, int events) |
|
|
129 | { |
|
|
130 | w->pending = ++pendingcnt; |
398 | w_->pending = ++pendingcnt [ABSPRI (w_)]; |
131 | array_needsize (pendings, pendingmax, pendingcnt, ); |
399 | array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2); |
132 | pendings [pendingcnt - 1].w = w; |
400 | pendings [ABSPRI (w_)][w_->pending - 1].w = w_; |
133 | pendings [pendingcnt - 1].events = events; |
401 | pendings [ABSPRI (w_)][w_->pending - 1].events = revents; |
134 | } |
402 | } |
135 | |
403 | |
136 | static void |
404 | static void |
|
|
405 | queue_events (EV_P_ W *events, int eventcnt, int type) |
|
|
406 | { |
|
|
407 | int i; |
|
|
408 | |
|
|
409 | for (i = 0; i < eventcnt; ++i) |
|
|
410 | ev_feed_event (EV_A_ events [i], type); |
|
|
411 | } |
|
|
412 | |
|
|
413 | inline void |
137 | fd_event (int fd, int events) |
414 | fd_event (EV_P_ int fd, int revents) |
138 | { |
415 | { |
139 | ANFD *anfd = anfds + fd; |
416 | ANFD *anfd = anfds + fd; |
140 | struct ev_io *w; |
417 | struct ev_io *w; |
141 | |
418 | |
142 | for (w = anfd->head; w; w = w->next) |
419 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
143 | { |
420 | { |
144 | int ev = w->events & events; |
421 | int ev = w->events & revents; |
145 | |
422 | |
146 | if (ev) |
423 | if (ev) |
147 | event ((W)w, ev); |
424 | ev_feed_event (EV_A_ (W)w, ev); |
148 | } |
425 | } |
149 | } |
426 | } |
150 | |
427 | |
151 | static void |
428 | void |
152 | queue_events (W *events, int eventcnt, int type) |
429 | ev_feed_fd_event (EV_P_ int fd, int revents) |
153 | { |
430 | { |
154 | int i; |
431 | fd_event (EV_A_ fd, revents); |
155 | |
|
|
156 | for (i = 0; i < eventcnt; ++i) |
|
|
157 | event (events [i], type); |
|
|
158 | } |
432 | } |
159 | |
433 | |
160 | /*****************************************************************************/ |
434 | /*****************************************************************************/ |
161 | |
435 | |
162 | static struct ev_timer **timers; |
436 | inline void |
163 | static int timermax, timercnt; |
437 | fd_reify (EV_P) |
164 | |
|
|
165 | static struct ev_periodic **periodics; |
|
|
166 | static int periodicmax, periodiccnt; |
|
|
167 | |
|
|
168 | static void |
|
|
169 | upheap (WT *timers, int k) |
|
|
170 | { |
|
|
171 | WT w = timers [k]; |
|
|
172 | |
|
|
173 | while (k && timers [k >> 1]->at > w->at) |
|
|
174 | { |
|
|
175 | timers [k] = timers [k >> 1]; |
|
|
176 | timers [k]->active = k + 1; |
|
|
177 | k >>= 1; |
|
|
178 | } |
|
|
179 | |
|
|
180 | timers [k] = w; |
|
|
181 | timers [k]->active = k + 1; |
|
|
182 | |
|
|
183 | } |
|
|
184 | |
|
|
185 | static void |
|
|
186 | downheap (WT *timers, int N, int k) |
|
|
187 | { |
|
|
188 | WT w = timers [k]; |
|
|
189 | |
|
|
190 | while (k < (N >> 1)) |
|
|
191 | { |
|
|
192 | int j = k << 1; |
|
|
193 | |
|
|
194 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
|
|
195 | ++j; |
|
|
196 | |
|
|
197 | if (w->at <= timers [j]->at) |
|
|
198 | break; |
|
|
199 | |
|
|
200 | timers [k] = timers [j]; |
|
|
201 | timers [k]->active = k + 1; |
|
|
202 | k = j; |
|
|
203 | } |
|
|
204 | |
|
|
205 | timers [k] = w; |
|
|
206 | timers [k]->active = k + 1; |
|
|
207 | } |
|
|
208 | |
|
|
209 | /*****************************************************************************/ |
|
|
210 | |
|
|
211 | typedef struct |
|
|
212 | { |
|
|
213 | struct ev_signal *head; |
|
|
214 | sig_atomic_t gotsig; |
|
|
215 | } ANSIG; |
|
|
216 | |
|
|
217 | static ANSIG *signals; |
|
|
218 | static int signalmax; |
|
|
219 | |
|
|
220 | static int sigpipe [2]; |
|
|
221 | static sig_atomic_t gotsig; |
|
|
222 | static struct ev_io sigev; |
|
|
223 | |
|
|
224 | static void |
|
|
225 | signals_init (ANSIG *base, int count) |
|
|
226 | { |
|
|
227 | while (count--) |
|
|
228 | { |
|
|
229 | base->head = 0; |
|
|
230 | base->gotsig = 0; |
|
|
231 | ++base; |
|
|
232 | } |
|
|
233 | } |
|
|
234 | |
|
|
235 | static void |
|
|
236 | sighandler (int signum) |
|
|
237 | { |
|
|
238 | signals [signum - 1].gotsig = 1; |
|
|
239 | |
|
|
240 | if (!gotsig) |
|
|
241 | { |
|
|
242 | gotsig = 1; |
|
|
243 | write (sigpipe [1], &gotsig, 1); |
|
|
244 | } |
|
|
245 | } |
|
|
246 | |
|
|
247 | static void |
|
|
248 | sigcb (struct ev_io *iow, int revents) |
|
|
249 | { |
|
|
250 | struct ev_signal *w; |
|
|
251 | int sig; |
|
|
252 | |
|
|
253 | gotsig = 0; |
|
|
254 | read (sigpipe [0], &revents, 1); |
|
|
255 | |
|
|
256 | for (sig = signalmax; sig--; ) |
|
|
257 | if (signals [sig].gotsig) |
|
|
258 | { |
|
|
259 | signals [sig].gotsig = 0; |
|
|
260 | |
|
|
261 | for (w = signals [sig].head; w; w = w->next) |
|
|
262 | event ((W)w, EV_SIGNAL); |
|
|
263 | } |
|
|
264 | } |
|
|
265 | |
|
|
266 | static void |
|
|
267 | siginit (void) |
|
|
268 | { |
|
|
269 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
|
|
270 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
271 | |
|
|
272 | /* rather than sort out wether we really need nb, set it */ |
|
|
273 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
|
|
274 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
275 | |
|
|
276 | evio_set (&sigev, sigpipe [0], EV_READ); |
|
|
277 | evio_start (&sigev); |
|
|
278 | } |
|
|
279 | |
|
|
280 | /*****************************************************************************/ |
|
|
281 | |
|
|
282 | static struct ev_idle **idles; |
|
|
283 | static int idlemax, idlecnt; |
|
|
284 | |
|
|
285 | static struct ev_check **checks; |
|
|
286 | static int checkmax, checkcnt; |
|
|
287 | |
|
|
288 | /*****************************************************************************/ |
|
|
289 | |
|
|
290 | #if HAVE_EPOLL |
|
|
291 | # include "ev_epoll.c" |
|
|
292 | #endif |
|
|
293 | #if HAVE_SELECT |
|
|
294 | # include "ev_select.c" |
|
|
295 | #endif |
|
|
296 | |
|
|
297 | int ev_init (int flags) |
|
|
298 | { |
|
|
299 | #if HAVE_MONOTONIC |
|
|
300 | { |
|
|
301 | struct timespec ts; |
|
|
302 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
303 | have_monotonic = 1; |
|
|
304 | } |
|
|
305 | #endif |
|
|
306 | |
|
|
307 | ev_now = ev_time (); |
|
|
308 | now = get_clock (); |
|
|
309 | diff = ev_now - now; |
|
|
310 | |
|
|
311 | if (pipe (sigpipe)) |
|
|
312 | return 0; |
|
|
313 | |
|
|
314 | ev_method = EVMETHOD_NONE; |
|
|
315 | #if HAVE_EPOLL |
|
|
316 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
|
|
317 | #endif |
|
|
318 | #if HAVE_SELECT |
|
|
319 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
320 | #endif |
|
|
321 | |
|
|
322 | if (ev_method) |
|
|
323 | { |
|
|
324 | evw_init (&sigev, sigcb); |
|
|
325 | siginit (); |
|
|
326 | } |
|
|
327 | |
|
|
328 | return ev_method; |
|
|
329 | } |
|
|
330 | |
|
|
331 | /*****************************************************************************/ |
|
|
332 | |
|
|
333 | void ev_prefork (void) |
|
|
334 | { |
|
|
335 | /* nop */ |
|
|
336 | } |
|
|
337 | |
|
|
338 | void ev_postfork_parent (void) |
|
|
339 | { |
|
|
340 | /* nop */ |
|
|
341 | } |
|
|
342 | |
|
|
343 | void ev_postfork_child (void) |
|
|
344 | { |
|
|
345 | #if HAVE_EPOLL |
|
|
346 | if (ev_method == EVMETHOD_EPOLL) |
|
|
347 | epoll_postfork_child (); |
|
|
348 | #endif |
|
|
349 | |
|
|
350 | evio_stop (&sigev); |
|
|
351 | close (sigpipe [0]); |
|
|
352 | close (sigpipe [1]); |
|
|
353 | pipe (sigpipe); |
|
|
354 | siginit (); |
|
|
355 | } |
|
|
356 | |
|
|
357 | /*****************************************************************************/ |
|
|
358 | |
|
|
359 | static void |
|
|
360 | fd_reify (void) |
|
|
361 | { |
438 | { |
362 | int i; |
439 | int i; |
363 | |
440 | |
364 | for (i = 0; i < fdchangecnt; ++i) |
441 | for (i = 0; i < fdchangecnt; ++i) |
365 | { |
442 | { |
366 | int fd = fdchanges [i]; |
443 | int fd = fdchanges [i]; |
367 | ANFD *anfd = anfds + fd; |
444 | ANFD *anfd = anfds + fd; |
368 | struct ev_io *w; |
445 | struct ev_io *w; |
369 | |
446 | |
370 | int wev = 0; |
447 | int events = 0; |
371 | |
448 | |
372 | for (w = anfd->head; w; w = w->next) |
449 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
373 | wev |= w->events; |
450 | events |= w->events; |
374 | |
451 | |
375 | if (anfd->wev != wev) |
452 | #if EV_SELECT_IS_WINSOCKET |
|
|
453 | if (events) |
376 | { |
454 | { |
377 | method_modify (fd, anfd->wev, wev); |
455 | unsigned long argp; |
378 | anfd->wev = wev; |
456 | anfd->handle = _get_osfhandle (fd); |
|
|
457 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
379 | } |
458 | } |
|
|
459 | #endif |
|
|
460 | |
|
|
461 | anfd->reify = 0; |
|
|
462 | |
|
|
463 | backend_modify (EV_A_ fd, anfd->events, events); |
|
|
464 | anfd->events = events; |
380 | } |
465 | } |
381 | |
466 | |
382 | fdchangecnt = 0; |
467 | fdchangecnt = 0; |
383 | } |
468 | } |
384 | |
469 | |
385 | static void |
470 | static void |
386 | call_pending () |
471 | fd_change (EV_P_ int fd) |
|
|
472 | { |
|
|
473 | if (expect_false (anfds [fd].reify)) |
|
|
474 | return; |
|
|
475 | |
|
|
476 | anfds [fd].reify = 1; |
|
|
477 | |
|
|
478 | ++fdchangecnt; |
|
|
479 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
|
|
480 | fdchanges [fdchangecnt - 1] = fd; |
|
|
481 | } |
|
|
482 | |
|
|
483 | static void |
|
|
484 | fd_kill (EV_P_ int fd) |
|
|
485 | { |
|
|
486 | struct ev_io *w; |
|
|
487 | |
|
|
488 | while ((w = (struct ev_io *)anfds [fd].head)) |
|
|
489 | { |
|
|
490 | ev_io_stop (EV_A_ w); |
|
|
491 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
492 | } |
|
|
493 | } |
|
|
494 | |
|
|
495 | inline int |
|
|
496 | fd_valid (int fd) |
|
|
497 | { |
|
|
498 | #ifdef _WIN32 |
|
|
499 | return _get_osfhandle (fd) != -1; |
|
|
500 | #else |
|
|
501 | return fcntl (fd, F_GETFD) != -1; |
|
|
502 | #endif |
|
|
503 | } |
|
|
504 | |
|
|
505 | /* called on EBADF to verify fds */ |
|
|
506 | static void |
|
|
507 | fd_ebadf (EV_P) |
|
|
508 | { |
|
|
509 | int fd; |
|
|
510 | |
|
|
511 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
512 | if (anfds [fd].events) |
|
|
513 | if (!fd_valid (fd) == -1 && errno == EBADF) |
|
|
514 | fd_kill (EV_A_ fd); |
|
|
515 | } |
|
|
516 | |
|
|
517 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
518 | static void |
|
|
519 | fd_enomem (EV_P) |
|
|
520 | { |
|
|
521 | int fd; |
|
|
522 | |
|
|
523 | for (fd = anfdmax; fd--; ) |
|
|
524 | if (anfds [fd].events) |
|
|
525 | { |
|
|
526 | fd_kill (EV_A_ fd); |
|
|
527 | return; |
|
|
528 | } |
|
|
529 | } |
|
|
530 | |
|
|
531 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
|
|
532 | static void |
|
|
533 | fd_rearm_all (EV_P) |
|
|
534 | { |
|
|
535 | int fd; |
|
|
536 | |
|
|
537 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
538 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
539 | if (anfds [fd].events) |
|
|
540 | { |
|
|
541 | anfds [fd].events = 0; |
|
|
542 | fd_change (EV_A_ fd); |
|
|
543 | } |
|
|
544 | } |
|
|
545 | |
|
|
546 | /*****************************************************************************/ |
|
|
547 | |
|
|
548 | static void |
|
|
549 | upheap (WT *heap, int k) |
|
|
550 | { |
|
|
551 | WT w = heap [k]; |
|
|
552 | |
|
|
553 | while (k && heap [k >> 1]->at > w->at) |
|
|
554 | { |
|
|
555 | heap [k] = heap [k >> 1]; |
|
|
556 | ((W)heap [k])->active = k + 1; |
|
|
557 | k >>= 1; |
|
|
558 | } |
|
|
559 | |
|
|
560 | heap [k] = w; |
|
|
561 | ((W)heap [k])->active = k + 1; |
|
|
562 | |
|
|
563 | } |
|
|
564 | |
|
|
565 | static void |
|
|
566 | downheap (WT *heap, int N, int k) |
|
|
567 | { |
|
|
568 | WT w = heap [k]; |
|
|
569 | |
|
|
570 | while (k < (N >> 1)) |
|
|
571 | { |
|
|
572 | int j = k << 1; |
|
|
573 | |
|
|
574 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
|
|
575 | ++j; |
|
|
576 | |
|
|
577 | if (w->at <= heap [j]->at) |
|
|
578 | break; |
|
|
579 | |
|
|
580 | heap [k] = heap [j]; |
|
|
581 | ((W)heap [k])->active = k + 1; |
|
|
582 | k = j; |
|
|
583 | } |
|
|
584 | |
|
|
585 | heap [k] = w; |
|
|
586 | ((W)heap [k])->active = k + 1; |
|
|
587 | } |
|
|
588 | |
|
|
589 | inline void |
|
|
590 | adjustheap (WT *heap, int N, int k) |
|
|
591 | { |
|
|
592 | upheap (heap, k); |
|
|
593 | downheap (heap, N, k); |
|
|
594 | } |
|
|
595 | |
|
|
596 | /*****************************************************************************/ |
|
|
597 | |
|
|
598 | typedef struct |
|
|
599 | { |
|
|
600 | WL head; |
|
|
601 | sig_atomic_t volatile gotsig; |
|
|
602 | } ANSIG; |
|
|
603 | |
|
|
604 | static ANSIG *signals; |
|
|
605 | static int signalmax; |
|
|
606 | |
|
|
607 | static int sigpipe [2]; |
|
|
608 | static sig_atomic_t volatile gotsig; |
|
|
609 | static struct ev_io sigev; |
|
|
610 | |
|
|
611 | static void |
|
|
612 | signals_init (ANSIG *base, int count) |
|
|
613 | { |
|
|
614 | while (count--) |
|
|
615 | { |
|
|
616 | base->head = 0; |
|
|
617 | base->gotsig = 0; |
|
|
618 | |
|
|
619 | ++base; |
|
|
620 | } |
|
|
621 | } |
|
|
622 | |
|
|
623 | static void |
|
|
624 | sighandler (int signum) |
|
|
625 | { |
|
|
626 | #if _WIN32 |
|
|
627 | signal (signum, sighandler); |
|
|
628 | #endif |
|
|
629 | |
|
|
630 | signals [signum - 1].gotsig = 1; |
|
|
631 | |
|
|
632 | if (!gotsig) |
|
|
633 | { |
|
|
634 | int old_errno = errno; |
|
|
635 | gotsig = 1; |
|
|
636 | write (sigpipe [1], &signum, 1); |
|
|
637 | errno = old_errno; |
|
|
638 | } |
|
|
639 | } |
|
|
640 | |
|
|
641 | void |
|
|
642 | ev_feed_signal_event (EV_P_ int signum) |
|
|
643 | { |
|
|
644 | WL w; |
|
|
645 | |
|
|
646 | #if EV_MULTIPLICITY |
|
|
647 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
648 | #endif |
|
|
649 | |
|
|
650 | --signum; |
|
|
651 | |
|
|
652 | if (signum < 0 || signum >= signalmax) |
|
|
653 | return; |
|
|
654 | |
|
|
655 | signals [signum].gotsig = 0; |
|
|
656 | |
|
|
657 | for (w = signals [signum].head; w; w = w->next) |
|
|
658 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
659 | } |
|
|
660 | |
|
|
661 | static void |
|
|
662 | sigcb (EV_P_ struct ev_io *iow, int revents) |
|
|
663 | { |
|
|
664 | int signum; |
|
|
665 | |
|
|
666 | read (sigpipe [0], &revents, 1); |
|
|
667 | gotsig = 0; |
|
|
668 | |
|
|
669 | for (signum = signalmax; signum--; ) |
|
|
670 | if (signals [signum].gotsig) |
|
|
671 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
672 | } |
|
|
673 | |
|
|
674 | static void |
|
|
675 | fd_intern (int fd) |
|
|
676 | { |
|
|
677 | #ifdef _WIN32 |
|
|
678 | int arg = 1; |
|
|
679 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
680 | #else |
|
|
681 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
682 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
683 | #endif |
|
|
684 | } |
|
|
685 | |
|
|
686 | static void |
|
|
687 | siginit (EV_P) |
|
|
688 | { |
|
|
689 | fd_intern (sigpipe [0]); |
|
|
690 | fd_intern (sigpipe [1]); |
|
|
691 | |
|
|
692 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
693 | ev_io_start (EV_A_ &sigev); |
|
|
694 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
695 | } |
|
|
696 | |
|
|
697 | /*****************************************************************************/ |
|
|
698 | |
|
|
699 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
700 | |
|
|
701 | #ifndef _WIN32 |
|
|
702 | |
|
|
703 | static struct ev_signal childev; |
|
|
704 | |
|
|
705 | #ifndef WCONTINUED |
|
|
706 | # define WCONTINUED 0 |
|
|
707 | #endif |
|
|
708 | |
|
|
709 | static void |
|
|
710 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
|
|
711 | { |
|
|
712 | struct ev_child *w; |
|
|
713 | |
|
|
714 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
715 | if (w->pid == pid || !w->pid) |
|
|
716 | { |
|
|
717 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
|
|
718 | w->rpid = pid; |
|
|
719 | w->rstatus = status; |
|
|
720 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
721 | } |
|
|
722 | } |
|
|
723 | |
|
|
724 | static void |
|
|
725 | childcb (EV_P_ struct ev_signal *sw, int revents) |
|
|
726 | { |
|
|
727 | int pid, status; |
|
|
728 | |
|
|
729 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
|
|
730 | { |
|
|
731 | /* make sure we are called again until all childs have been reaped */ |
|
|
732 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
733 | |
|
|
734 | child_reap (EV_A_ sw, pid, pid, status); |
|
|
735 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
|
|
736 | } |
|
|
737 | } |
|
|
738 | |
|
|
739 | #endif |
|
|
740 | |
|
|
741 | /*****************************************************************************/ |
|
|
742 | |
|
|
743 | #if EV_USE_PORT |
|
|
744 | # include "ev_port.c" |
|
|
745 | #endif |
|
|
746 | #if EV_USE_KQUEUE |
|
|
747 | # include "ev_kqueue.c" |
|
|
748 | #endif |
|
|
749 | #if EV_USE_EPOLL |
|
|
750 | # include "ev_epoll.c" |
|
|
751 | #endif |
|
|
752 | #if EV_USE_POLL |
|
|
753 | # include "ev_poll.c" |
|
|
754 | #endif |
|
|
755 | #if EV_USE_SELECT |
|
|
756 | # include "ev_select.c" |
|
|
757 | #endif |
|
|
758 | |
|
|
759 | int |
|
|
760 | ev_version_major (void) |
|
|
761 | { |
|
|
762 | return EV_VERSION_MAJOR; |
|
|
763 | } |
|
|
764 | |
|
|
765 | int |
|
|
766 | ev_version_minor (void) |
|
|
767 | { |
|
|
768 | return EV_VERSION_MINOR; |
|
|
769 | } |
|
|
770 | |
|
|
771 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
772 | static int |
|
|
773 | enable_secure (void) |
|
|
774 | { |
|
|
775 | #ifdef _WIN32 |
|
|
776 | return 0; |
|
|
777 | #else |
|
|
778 | return getuid () != geteuid () |
|
|
779 | || getgid () != getegid (); |
|
|
780 | #endif |
|
|
781 | } |
|
|
782 | |
|
|
783 | unsigned int |
|
|
784 | ev_supported_backends (void) |
|
|
785 | { |
|
|
786 | unsigned int flags = 0; |
|
|
787 | |
|
|
788 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
789 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
790 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
791 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
792 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
793 | |
|
|
794 | return flags; |
|
|
795 | } |
|
|
796 | |
|
|
797 | unsigned int |
|
|
798 | ev_recommended_backends (void) |
|
|
799 | { |
|
|
800 | unsigned int flags = ev_recommended_backends (); |
|
|
801 | |
|
|
802 | #ifndef __NetBSD__ |
|
|
803 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
804 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
805 | flags &= ~EVBACKEND_KQUEUE; |
|
|
806 | #endif |
|
|
807 | #ifdef __APPLE__ |
|
|
808 | // flags &= ~EVBACKEND_KQUEUE; for documentation |
|
|
809 | flags &= ~EVBACKEND_POLL; |
|
|
810 | #endif |
|
|
811 | |
|
|
812 | return flags; |
|
|
813 | } |
|
|
814 | |
|
|
815 | unsigned int |
|
|
816 | ev_backend (EV_P) |
|
|
817 | { |
|
|
818 | return backend; |
|
|
819 | } |
|
|
820 | |
|
|
821 | static void |
|
|
822 | loop_init (EV_P_ unsigned int flags) |
|
|
823 | { |
|
|
824 | if (!backend) |
|
|
825 | { |
|
|
826 | #if EV_USE_MONOTONIC |
|
|
827 | { |
|
|
828 | struct timespec ts; |
|
|
829 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
830 | have_monotonic = 1; |
|
|
831 | } |
|
|
832 | #endif |
|
|
833 | |
|
|
834 | ev_rt_now = ev_time (); |
|
|
835 | mn_now = get_clock (); |
|
|
836 | now_floor = mn_now; |
|
|
837 | rtmn_diff = ev_rt_now - mn_now; |
|
|
838 | |
|
|
839 | if (!(flags & EVFLAG_NOENV) |
|
|
840 | && !enable_secure () |
|
|
841 | && getenv ("LIBEV_FLAGS")) |
|
|
842 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
843 | |
|
|
844 | if (!(flags & 0x0000ffffUL)) |
|
|
845 | flags |= ev_recommended_backends (); |
|
|
846 | |
|
|
847 | backend = 0; |
|
|
848 | #if EV_USE_PORT |
|
|
849 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
850 | #endif |
|
|
851 | #if EV_USE_KQUEUE |
|
|
852 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
853 | #endif |
|
|
854 | #if EV_USE_EPOLL |
|
|
855 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
|
|
856 | #endif |
|
|
857 | #if EV_USE_POLL |
|
|
858 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
|
|
859 | #endif |
|
|
860 | #if EV_USE_SELECT |
|
|
861 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
|
|
862 | #endif |
|
|
863 | |
|
|
864 | ev_init (&sigev, sigcb); |
|
|
865 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
866 | } |
|
|
867 | } |
|
|
868 | |
|
|
869 | static void |
|
|
870 | loop_destroy (EV_P) |
387 | { |
871 | { |
388 | int i; |
872 | int i; |
389 | |
873 | |
390 | for (i = 0; i < pendingcnt; ++i) |
874 | #if EV_USE_PORT |
|
|
875 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
876 | #endif |
|
|
877 | #if EV_USE_KQUEUE |
|
|
878 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
879 | #endif |
|
|
880 | #if EV_USE_EPOLL |
|
|
881 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
882 | #endif |
|
|
883 | #if EV_USE_POLL |
|
|
884 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
885 | #endif |
|
|
886 | #if EV_USE_SELECT |
|
|
887 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
888 | #endif |
|
|
889 | |
|
|
890 | for (i = NUMPRI; i--; ) |
|
|
891 | array_free (pending, [i]); |
|
|
892 | |
|
|
893 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
894 | array_free (fdchange, EMPTY0); |
|
|
895 | array_free (timer, EMPTY0); |
|
|
896 | #if EV_PERIODICS |
|
|
897 | array_free (periodic, EMPTY0); |
|
|
898 | #endif |
|
|
899 | array_free (idle, EMPTY0); |
|
|
900 | array_free (prepare, EMPTY0); |
|
|
901 | array_free (check, EMPTY0); |
|
|
902 | |
|
|
903 | backend = 0; |
|
|
904 | } |
|
|
905 | |
|
|
906 | static void |
|
|
907 | loop_fork (EV_P) |
|
|
908 | { |
|
|
909 | #if EV_USE_PORT |
|
|
910 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
911 | #endif |
|
|
912 | #if EV_USE_KQUEUE |
|
|
913 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
914 | #endif |
|
|
915 | #if EV_USE_EPOLL |
|
|
916 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
917 | #endif |
|
|
918 | |
|
|
919 | if (ev_is_active (&sigev)) |
|
|
920 | { |
|
|
921 | /* default loop */ |
|
|
922 | |
|
|
923 | ev_ref (EV_A); |
|
|
924 | ev_io_stop (EV_A_ &sigev); |
|
|
925 | close (sigpipe [0]); |
|
|
926 | close (sigpipe [1]); |
|
|
927 | |
|
|
928 | while (pipe (sigpipe)) |
|
|
929 | syserr ("(libev) error creating pipe"); |
|
|
930 | |
|
|
931 | siginit (EV_A); |
391 | { |
932 | } |
392 | ANPENDING *p = pendings + i; |
|
|
393 | |
933 | |
394 | if (p->w) |
934 | postfork = 0; |
|
|
935 | } |
|
|
936 | |
|
|
937 | #if EV_MULTIPLICITY |
|
|
938 | struct ev_loop * |
|
|
939 | ev_loop_new (unsigned int flags) |
|
|
940 | { |
|
|
941 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
942 | |
|
|
943 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
944 | |
|
|
945 | loop_init (EV_A_ flags); |
|
|
946 | |
|
|
947 | if (ev_backend (EV_A)) |
|
|
948 | return loop; |
|
|
949 | |
|
|
950 | return 0; |
|
|
951 | } |
|
|
952 | |
|
|
953 | void |
|
|
954 | ev_loop_destroy (EV_P) |
|
|
955 | { |
|
|
956 | loop_destroy (EV_A); |
|
|
957 | ev_free (loop); |
|
|
958 | } |
|
|
959 | |
|
|
960 | void |
|
|
961 | ev_loop_fork (EV_P) |
|
|
962 | { |
|
|
963 | postfork = 1; |
|
|
964 | } |
|
|
965 | |
|
|
966 | #endif |
|
|
967 | |
|
|
968 | #if EV_MULTIPLICITY |
|
|
969 | struct ev_loop * |
|
|
970 | ev_default_loop_init (unsigned int flags) |
|
|
971 | #else |
|
|
972 | int |
|
|
973 | ev_default_loop (unsigned int flags) |
|
|
974 | #endif |
|
|
975 | { |
|
|
976 | if (sigpipe [0] == sigpipe [1]) |
|
|
977 | if (pipe (sigpipe)) |
|
|
978 | return 0; |
|
|
979 | |
|
|
980 | if (!ev_default_loop_ptr) |
|
|
981 | { |
|
|
982 | #if EV_MULTIPLICITY |
|
|
983 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
|
|
984 | #else |
|
|
985 | ev_default_loop_ptr = 1; |
|
|
986 | #endif |
|
|
987 | |
|
|
988 | loop_init (EV_A_ flags); |
|
|
989 | |
|
|
990 | if (ev_backend (EV_A)) |
395 | { |
991 | { |
396 | p->w->pending = 0; |
992 | siginit (EV_A); |
397 | p->w->cb (p->w, p->events); |
993 | |
|
|
994 | #ifndef _WIN32 |
|
|
995 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
996 | ev_set_priority (&childev, EV_MAXPRI); |
|
|
997 | ev_signal_start (EV_A_ &childev); |
|
|
998 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
999 | #endif |
398 | } |
1000 | } |
|
|
1001 | else |
|
|
1002 | ev_default_loop_ptr = 0; |
|
|
1003 | } |
|
|
1004 | |
|
|
1005 | return ev_default_loop_ptr; |
|
|
1006 | } |
|
|
1007 | |
|
|
1008 | void |
|
|
1009 | ev_default_destroy (void) |
|
|
1010 | { |
|
|
1011 | #if EV_MULTIPLICITY |
|
|
1012 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1013 | #endif |
|
|
1014 | |
|
|
1015 | #ifndef _WIN32 |
|
|
1016 | ev_ref (EV_A); /* child watcher */ |
|
|
1017 | ev_signal_stop (EV_A_ &childev); |
|
|
1018 | #endif |
|
|
1019 | |
|
|
1020 | ev_ref (EV_A); /* signal watcher */ |
|
|
1021 | ev_io_stop (EV_A_ &sigev); |
|
|
1022 | |
|
|
1023 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
1024 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
1025 | |
|
|
1026 | loop_destroy (EV_A); |
|
|
1027 | } |
|
|
1028 | |
|
|
1029 | void |
|
|
1030 | ev_default_fork (void) |
|
|
1031 | { |
|
|
1032 | #if EV_MULTIPLICITY |
|
|
1033 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1034 | #endif |
|
|
1035 | |
|
|
1036 | if (backend) |
|
|
1037 | postfork = 1; |
|
|
1038 | } |
|
|
1039 | |
|
|
1040 | /*****************************************************************************/ |
|
|
1041 | |
|
|
1042 | static int |
|
|
1043 | any_pending (EV_P) |
|
|
1044 | { |
|
|
1045 | int pri; |
|
|
1046 | |
|
|
1047 | for (pri = NUMPRI; pri--; ) |
|
|
1048 | if (pendingcnt [pri]) |
|
|
1049 | return 1; |
|
|
1050 | |
|
|
1051 | return 0; |
|
|
1052 | } |
|
|
1053 | |
|
|
1054 | inline void |
|
|
1055 | call_pending (EV_P) |
|
|
1056 | { |
|
|
1057 | int pri; |
|
|
1058 | |
|
|
1059 | for (pri = NUMPRI; pri--; ) |
|
|
1060 | while (pendingcnt [pri]) |
|
|
1061 | { |
|
|
1062 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
|
|
1063 | |
|
|
1064 | if (expect_true (p->w)) |
|
|
1065 | { |
|
|
1066 | p->w->pending = 0; |
|
|
1067 | EV_CB_INVOKE (p->w, p->events); |
|
|
1068 | } |
399 | } |
1069 | } |
400 | |
|
|
401 | pendingcnt = 0; |
|
|
402 | } |
1070 | } |
403 | |
1071 | |
404 | static void |
1072 | inline void |
405 | timers_reify () |
1073 | timers_reify (EV_P) |
406 | { |
1074 | { |
407 | while (timercnt && timers [0]->at <= now) |
1075 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
408 | { |
1076 | { |
409 | struct ev_timer *w = timers [0]; |
1077 | struct ev_timer *w = timers [0]; |
|
|
1078 | |
|
|
1079 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
410 | |
1080 | |
411 | /* first reschedule or stop timer */ |
1081 | /* first reschedule or stop timer */ |
412 | if (w->repeat) |
1082 | if (w->repeat) |
413 | { |
1083 | { |
|
|
1084 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
1085 | |
414 | w->at = now + w->repeat; |
1086 | ((WT)w)->at += w->repeat; |
415 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
1087 | if (((WT)w)->at < mn_now) |
|
|
1088 | ((WT)w)->at = mn_now; |
|
|
1089 | |
416 | downheap ((WT *)timers, timercnt, 0); |
1090 | downheap ((WT *)timers, timercnt, 0); |
417 | } |
1091 | } |
418 | else |
1092 | else |
419 | evtimer_stop (w); /* nonrepeating: stop timer */ |
1093 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
420 | |
1094 | |
421 | event ((W)w, EV_TIMEOUT); |
1095 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
422 | } |
1096 | } |
423 | } |
1097 | } |
424 | |
1098 | |
425 | static void |
1099 | #if EV_PERIODICS |
|
|
1100 | inline void |
426 | periodics_reify () |
1101 | periodics_reify (EV_P) |
427 | { |
1102 | { |
428 | while (periodiccnt && periodics [0]->at <= ev_now) |
1103 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
429 | { |
1104 | { |
430 | struct ev_periodic *w = periodics [0]; |
1105 | struct ev_periodic *w = periodics [0]; |
431 | |
1106 | |
|
|
1107 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
|
|
1108 | |
432 | /* first reschedule or stop timer */ |
1109 | /* first reschedule or stop timer */ |
433 | if (w->interval) |
1110 | if (w->reschedule_cb) |
434 | { |
1111 | { |
|
|
1112 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); |
|
|
1113 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
|
|
1114 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1115 | } |
|
|
1116 | else if (w->interval) |
|
|
1117 | { |
435 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
1118 | ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
436 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
1119 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
437 | downheap ((WT *)periodics, periodiccnt, 0); |
1120 | downheap ((WT *)periodics, periodiccnt, 0); |
438 | } |
1121 | } |
439 | else |
1122 | else |
440 | evperiodic_stop (w); /* nonrepeating: stop timer */ |
1123 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
441 | |
1124 | |
442 | event ((W)w, EV_TIMEOUT); |
1125 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
443 | } |
1126 | } |
444 | } |
1127 | } |
445 | |
1128 | |
446 | static void |
1129 | static void |
447 | periodics_reschedule (ev_tstamp diff) |
1130 | periodics_reschedule (EV_P) |
448 | { |
1131 | { |
449 | int i; |
1132 | int i; |
450 | |
1133 | |
451 | /* adjust periodics after time jump */ |
1134 | /* adjust periodics after time jump */ |
452 | for (i = 0; i < periodiccnt; ++i) |
1135 | for (i = 0; i < periodiccnt; ++i) |
453 | { |
1136 | { |
454 | struct ev_periodic *w = periodics [i]; |
1137 | struct ev_periodic *w = periodics [i]; |
455 | |
1138 | |
|
|
1139 | if (w->reschedule_cb) |
|
|
1140 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
456 | if (w->interval) |
1141 | else if (w->interval) |
|
|
1142 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1143 | } |
|
|
1144 | |
|
|
1145 | /* now rebuild the heap */ |
|
|
1146 | for (i = periodiccnt >> 1; i--; ) |
|
|
1147 | downheap ((WT *)periodics, periodiccnt, i); |
|
|
1148 | } |
|
|
1149 | #endif |
|
|
1150 | |
|
|
1151 | inline int |
|
|
1152 | time_update_monotonic (EV_P) |
|
|
1153 | { |
|
|
1154 | mn_now = get_clock (); |
|
|
1155 | |
|
|
1156 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
1157 | { |
|
|
1158 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1159 | return 0; |
|
|
1160 | } |
|
|
1161 | else |
|
|
1162 | { |
|
|
1163 | now_floor = mn_now; |
|
|
1164 | ev_rt_now = ev_time (); |
|
|
1165 | return 1; |
|
|
1166 | } |
|
|
1167 | } |
|
|
1168 | |
|
|
1169 | inline void |
|
|
1170 | time_update (EV_P) |
|
|
1171 | { |
|
|
1172 | int i; |
|
|
1173 | |
|
|
1174 | #if EV_USE_MONOTONIC |
|
|
1175 | if (expect_true (have_monotonic)) |
|
|
1176 | { |
|
|
1177 | if (time_update_monotonic (EV_A)) |
457 | { |
1178 | { |
458 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
1179 | ev_tstamp odiff = rtmn_diff; |
459 | |
1180 | |
460 | if (fabs (diff) >= 1e-4) |
1181 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
461 | { |
1182 | { |
462 | evperiodic_stop (w); |
1183 | rtmn_diff = ev_rt_now - mn_now; |
463 | evperiodic_start (w); |
|
|
464 | |
1184 | |
465 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
1185 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
|
|
1186 | return; /* all is well */ |
|
|
1187 | |
|
|
1188 | ev_rt_now = ev_time (); |
|
|
1189 | mn_now = get_clock (); |
|
|
1190 | now_floor = mn_now; |
466 | } |
1191 | } |
|
|
1192 | |
|
|
1193 | # if EV_PERIODICS |
|
|
1194 | periodics_reschedule (EV_A); |
|
|
1195 | # endif |
|
|
1196 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1197 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
467 | } |
1198 | } |
468 | } |
1199 | } |
469 | } |
1200 | else |
470 | |
1201 | #endif |
471 | static void |
1202 | { |
472 | time_update () |
|
|
473 | { |
|
|
474 | int i; |
|
|
475 | |
|
|
476 | ev_now = ev_time (); |
1203 | ev_rt_now = ev_time (); |
477 | |
1204 | |
478 | if (have_monotonic) |
1205 | if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
479 | { |
|
|
480 | ev_tstamp odiff = diff; |
|
|
481 | |
|
|
482 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
483 | { |
1206 | { |
484 | now = get_clock (); |
1207 | #if EV_PERIODICS |
485 | diff = ev_now - now; |
|
|
486 | |
|
|
487 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
|
|
488 | return; /* all is well */ |
|
|
489 | |
|
|
490 | ev_now = ev_time (); |
|
|
491 | } |
|
|
492 | |
|
|
493 | periodics_reschedule (diff - odiff); |
|
|
494 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
495 | } |
|
|
496 | else |
|
|
497 | { |
|
|
498 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
|
|
499 | { |
|
|
500 | periodics_reschedule (ev_now - now); |
1208 | periodics_reschedule (EV_A); |
|
|
1209 | #endif |
501 | |
1210 | |
502 | /* adjust timers. this is easy, as the offset is the same for all */ |
1211 | /* adjust timers. this is easy, as the offset is the same for all */ |
503 | for (i = 0; i < timercnt; ++i) |
1212 | for (i = 0; i < timercnt; ++i) |
504 | timers [i]->at += diff; |
1213 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
505 | } |
1214 | } |
506 | |
1215 | |
507 | now = ev_now; |
1216 | mn_now = ev_rt_now; |
508 | } |
1217 | } |
509 | } |
1218 | } |
510 | |
1219 | |
511 | int ev_loop_done; |
1220 | void |
|
|
1221 | ev_ref (EV_P) |
|
|
1222 | { |
|
|
1223 | ++activecnt; |
|
|
1224 | } |
512 | |
1225 | |
|
|
1226 | void |
|
|
1227 | ev_unref (EV_P) |
|
|
1228 | { |
|
|
1229 | --activecnt; |
|
|
1230 | } |
|
|
1231 | |
|
|
1232 | static int loop_done; |
|
|
1233 | |
|
|
1234 | void |
513 | void ev_loop (int flags) |
1235 | ev_loop (EV_P_ int flags) |
514 | { |
1236 | { |
515 | double block; |
1237 | double block; |
516 | ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0; |
1238 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
517 | |
1239 | |
518 | if (checkcnt) |
1240 | while (activecnt) |
519 | { |
1241 | { |
520 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1242 | /* queue check watchers (and execute them) */ |
|
|
1243 | if (expect_false (preparecnt)) |
|
|
1244 | { |
|
|
1245 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
521 | call_pending (); |
1246 | call_pending (EV_A); |
522 | } |
1247 | } |
523 | |
1248 | |
524 | do |
1249 | /* we might have forked, so reify kernel state if necessary */ |
525 | { |
1250 | if (expect_false (postfork)) |
|
|
1251 | loop_fork (EV_A); |
|
|
1252 | |
526 | /* update fd-related kernel structures */ |
1253 | /* update fd-related kernel structures */ |
527 | fd_reify (); |
1254 | fd_reify (EV_A); |
528 | |
1255 | |
529 | /* calculate blocking time */ |
1256 | /* calculate blocking time */ |
530 | |
1257 | |
531 | /* we only need this for !monotonic clock, but as we always have timers, we just calculate it every time */ |
1258 | /* we only need this for !monotonic clock or timers, but as we basically |
|
|
1259 | always have timers, we just calculate it always */ |
|
|
1260 | #if EV_USE_MONOTONIC |
|
|
1261 | if (expect_true (have_monotonic)) |
|
|
1262 | time_update_monotonic (EV_A); |
|
|
1263 | else |
|
|
1264 | #endif |
|
|
1265 | { |
532 | ev_now = ev_time (); |
1266 | ev_rt_now = ev_time (); |
|
|
1267 | mn_now = ev_rt_now; |
|
|
1268 | } |
533 | |
1269 | |
534 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
1270 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
535 | block = 0.; |
1271 | block = 0.; |
536 | else |
1272 | else |
537 | { |
1273 | { |
538 | block = MAX_BLOCKTIME; |
1274 | block = MAX_BLOCKTIME; |
539 | |
1275 | |
540 | if (timercnt) |
1276 | if (timercnt) |
541 | { |
1277 | { |
542 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
1278 | ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; |
543 | if (block > to) block = to; |
1279 | if (block > to) block = to; |
544 | } |
1280 | } |
545 | |
1281 | |
|
|
1282 | #if EV_PERIODICS |
546 | if (periodiccnt) |
1283 | if (periodiccnt) |
547 | { |
1284 | { |
548 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
1285 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; |
549 | if (block > to) block = to; |
1286 | if (block > to) block = to; |
550 | } |
1287 | } |
|
|
1288 | #endif |
551 | |
1289 | |
552 | if (block < 0.) block = 0.; |
1290 | if (expect_false (block < 0.)) block = 0.; |
553 | } |
1291 | } |
554 | |
1292 | |
555 | method_poll (block); |
1293 | backend_poll (EV_A_ block); |
556 | |
1294 | |
557 | /* update ev_now, do magic */ |
1295 | /* update ev_rt_now, do magic */ |
558 | time_update (); |
1296 | time_update (EV_A); |
559 | |
1297 | |
560 | /* queue pending timers and reschedule them */ |
1298 | /* queue pending timers and reschedule them */ |
|
|
1299 | timers_reify (EV_A); /* relative timers called last */ |
|
|
1300 | #if EV_PERIODICS |
561 | periodics_reify (); /* absolute timers first */ |
1301 | periodics_reify (EV_A); /* absolute timers called first */ |
562 | timers_reify (); /* relative timers second */ |
1302 | #endif |
563 | |
1303 | |
564 | /* queue idle watchers unless io or timers are pending */ |
1304 | /* queue idle watchers unless io or timers are pending */ |
565 | if (!pendingcnt) |
1305 | if (idlecnt && !any_pending (EV_A)) |
566 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
1306 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
567 | |
1307 | |
568 | /* queue check and possibly idle watchers */ |
1308 | /* queue check watchers, to be executed first */ |
|
|
1309 | if (expect_false (checkcnt)) |
569 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1310 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
570 | |
1311 | |
571 | call_pending (); |
1312 | call_pending (EV_A); |
572 | } |
|
|
573 | while (!ev_loop_done); |
|
|
574 | |
1313 | |
|
|
1314 | if (expect_false (loop_done)) |
|
|
1315 | break; |
|
|
1316 | } |
|
|
1317 | |
575 | if (ev_loop_done != 2) |
1318 | if (loop_done != 2) |
576 | ev_loop_done = 0; |
1319 | loop_done = 0; |
|
|
1320 | } |
|
|
1321 | |
|
|
1322 | void |
|
|
1323 | ev_unloop (EV_P_ int how) |
|
|
1324 | { |
|
|
1325 | loop_done = how; |
577 | } |
1326 | } |
578 | |
1327 | |
579 | /*****************************************************************************/ |
1328 | /*****************************************************************************/ |
580 | |
1329 | |
581 | static void |
1330 | inline void |
582 | wlist_add (WL *head, WL elem) |
1331 | wlist_add (WL *head, WL elem) |
583 | { |
1332 | { |
584 | elem->next = *head; |
1333 | elem->next = *head; |
585 | *head = elem; |
1334 | *head = elem; |
586 | } |
1335 | } |
587 | |
1336 | |
588 | static void |
1337 | inline void |
589 | wlist_del (WL *head, WL elem) |
1338 | wlist_del (WL *head, WL elem) |
590 | { |
1339 | { |
591 | while (*head) |
1340 | while (*head) |
592 | { |
1341 | { |
593 | if (*head == elem) |
1342 | if (*head == elem) |
… | |
… | |
598 | |
1347 | |
599 | head = &(*head)->next; |
1348 | head = &(*head)->next; |
600 | } |
1349 | } |
601 | } |
1350 | } |
602 | |
1351 | |
603 | static void |
1352 | inline void |
|
|
1353 | ev_clear_pending (EV_P_ W w) |
|
|
1354 | { |
|
|
1355 | if (w->pending) |
|
|
1356 | { |
|
|
1357 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
|
|
1358 | w->pending = 0; |
|
|
1359 | } |
|
|
1360 | } |
|
|
1361 | |
|
|
1362 | inline void |
604 | ev_start (W w, int active) |
1363 | ev_start (EV_P_ W w, int active) |
605 | { |
1364 | { |
606 | w->pending = 0; |
1365 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1366 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1367 | |
607 | w->active = active; |
1368 | w->active = active; |
|
|
1369 | ev_ref (EV_A); |
608 | } |
1370 | } |
609 | |
1371 | |
610 | static void |
1372 | inline void |
611 | ev_stop (W w) |
1373 | ev_stop (EV_P_ W w) |
612 | { |
1374 | { |
613 | if (w->pending) |
1375 | ev_unref (EV_A); |
614 | pendings [w->pending - 1].w = 0; |
|
|
615 | |
|
|
616 | w->active = 0; |
1376 | w->active = 0; |
617 | } |
1377 | } |
618 | |
1378 | |
619 | /*****************************************************************************/ |
1379 | /*****************************************************************************/ |
620 | |
1380 | |
621 | void |
1381 | void |
622 | evio_start (struct ev_io *w) |
1382 | ev_io_start (EV_P_ struct ev_io *w) |
623 | { |
1383 | { |
|
|
1384 | int fd = w->fd; |
|
|
1385 | |
624 | if (ev_is_active (w)) |
1386 | if (expect_false (ev_is_active (w))) |
625 | return; |
1387 | return; |
626 | |
1388 | |
627 | int fd = w->fd; |
1389 | assert (("ev_io_start called with negative fd", fd >= 0)); |
628 | |
1390 | |
629 | ev_start ((W)w, 1); |
1391 | ev_start (EV_A_ (W)w, 1); |
630 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1392 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
631 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1393 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
632 | |
1394 | |
633 | ++fdchangecnt; |
1395 | fd_change (EV_A_ fd); |
634 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
635 | fdchanges [fdchangecnt - 1] = fd; |
|
|
636 | } |
1396 | } |
637 | |
1397 | |
638 | void |
1398 | void |
639 | evio_stop (struct ev_io *w) |
1399 | ev_io_stop (EV_P_ struct ev_io *w) |
640 | { |
1400 | { |
|
|
1401 | ev_clear_pending (EV_A_ (W)w); |
641 | if (!ev_is_active (w)) |
1402 | if (expect_false (!ev_is_active (w))) |
642 | return; |
1403 | return; |
643 | |
1404 | |
|
|
1405 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
1406 | |
644 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1407 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
645 | ev_stop ((W)w); |
1408 | ev_stop (EV_A_ (W)w); |
646 | |
1409 | |
647 | ++fdchangecnt; |
1410 | fd_change (EV_A_ w->fd); |
648 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
649 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
650 | } |
1411 | } |
651 | |
1412 | |
652 | |
|
|
653 | void |
1413 | void |
654 | evtimer_start (struct ev_timer *w) |
1414 | ev_timer_start (EV_P_ struct ev_timer *w) |
655 | { |
1415 | { |
656 | if (ev_is_active (w)) |
1416 | if (expect_false (ev_is_active (w))) |
657 | return; |
1417 | return; |
658 | |
1418 | |
659 | w->at += now; |
1419 | ((WT)w)->at += mn_now; |
660 | |
1420 | |
661 | assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); |
1421 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
662 | |
1422 | |
663 | ev_start ((W)w, ++timercnt); |
1423 | ev_start (EV_A_ (W)w, ++timercnt); |
664 | array_needsize (timers, timermax, timercnt, ); |
1424 | array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2); |
665 | timers [timercnt - 1] = w; |
1425 | timers [timercnt - 1] = w; |
666 | upheap ((WT *)timers, timercnt - 1); |
1426 | upheap ((WT *)timers, timercnt - 1); |
667 | } |
|
|
668 | |
1427 | |
|
|
1428 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1429 | } |
|
|
1430 | |
669 | void |
1431 | void |
670 | evtimer_stop (struct ev_timer *w) |
1432 | ev_timer_stop (EV_P_ struct ev_timer *w) |
671 | { |
1433 | { |
|
|
1434 | ev_clear_pending (EV_A_ (W)w); |
672 | if (!ev_is_active (w)) |
1435 | if (expect_false (!ev_is_active (w))) |
673 | return; |
1436 | return; |
674 | |
1437 | |
|
|
1438 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1439 | |
675 | if (w->active < timercnt--) |
1440 | if (expect_true (((W)w)->active < timercnt--)) |
676 | { |
1441 | { |
677 | timers [w->active - 1] = timers [timercnt]; |
1442 | timers [((W)w)->active - 1] = timers [timercnt]; |
678 | downheap ((WT *)timers, timercnt, w->active - 1); |
1443 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
679 | } |
1444 | } |
680 | |
1445 | |
681 | w->at = w->repeat; |
1446 | ((WT)w)->at -= mn_now; |
682 | |
1447 | |
683 | ev_stop ((W)w); |
1448 | ev_stop (EV_A_ (W)w); |
684 | } |
1449 | } |
685 | |
1450 | |
686 | void |
1451 | void |
687 | evtimer_again (struct ev_timer *w) |
1452 | ev_timer_again (EV_P_ struct ev_timer *w) |
688 | { |
1453 | { |
689 | if (ev_is_active (w)) |
1454 | if (ev_is_active (w)) |
690 | { |
1455 | { |
691 | if (w->repeat) |
1456 | if (w->repeat) |
692 | { |
1457 | { |
693 | w->at = now + w->repeat; |
1458 | ((WT)w)->at = mn_now + w->repeat; |
694 | downheap ((WT *)timers, timercnt, w->active - 1); |
1459 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
695 | } |
1460 | } |
696 | else |
1461 | else |
697 | evtimer_stop (w); |
1462 | ev_timer_stop (EV_A_ w); |
698 | } |
1463 | } |
699 | else if (w->repeat) |
1464 | else if (w->repeat) |
|
|
1465 | { |
|
|
1466 | w->at = w->repeat; |
700 | evtimer_start (w); |
1467 | ev_timer_start (EV_A_ w); |
|
|
1468 | } |
701 | } |
1469 | } |
702 | |
1470 | |
|
|
1471 | #if EV_PERIODICS |
703 | void |
1472 | void |
704 | evperiodic_start (struct ev_periodic *w) |
1473 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
705 | { |
1474 | { |
706 | if (ev_is_active (w)) |
1475 | if (expect_false (ev_is_active (w))) |
707 | return; |
1476 | return; |
708 | |
1477 | |
709 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
1478 | if (w->reschedule_cb) |
710 | |
1479 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1480 | else if (w->interval) |
|
|
1481 | { |
|
|
1482 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
711 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1483 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
712 | if (w->interval) |
|
|
713 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
1484 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1485 | } |
714 | |
1486 | |
715 | ev_start ((W)w, ++periodiccnt); |
1487 | ev_start (EV_A_ (W)w, ++periodiccnt); |
716 | array_needsize (periodics, periodicmax, periodiccnt, ); |
1488 | array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); |
717 | periodics [periodiccnt - 1] = w; |
1489 | periodics [periodiccnt - 1] = w; |
718 | upheap ((WT *)periodics, periodiccnt - 1); |
1490 | upheap ((WT *)periodics, periodiccnt - 1); |
719 | } |
|
|
720 | |
1491 | |
|
|
1492 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1493 | } |
|
|
1494 | |
721 | void |
1495 | void |
722 | evperiodic_stop (struct ev_periodic *w) |
1496 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
723 | { |
1497 | { |
|
|
1498 | ev_clear_pending (EV_A_ (W)w); |
724 | if (!ev_is_active (w)) |
1499 | if (expect_false (!ev_is_active (w))) |
725 | return; |
1500 | return; |
726 | |
1501 | |
|
|
1502 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1503 | |
727 | if (w->active < periodiccnt--) |
1504 | if (expect_true (((W)w)->active < periodiccnt--)) |
728 | { |
1505 | { |
729 | periodics [w->active - 1] = periodics [periodiccnt]; |
1506 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
730 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
1507 | adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
731 | } |
1508 | } |
732 | |
1509 | |
733 | ev_stop ((W)w); |
1510 | ev_stop (EV_A_ (W)w); |
734 | } |
1511 | } |
735 | |
1512 | |
736 | void |
1513 | void |
737 | evsignal_start (struct ev_signal *w) |
1514 | ev_periodic_again (EV_P_ struct ev_periodic *w) |
738 | { |
1515 | { |
|
|
1516 | /* TODO: use adjustheap and recalculation */ |
|
|
1517 | ev_periodic_stop (EV_A_ w); |
|
|
1518 | ev_periodic_start (EV_A_ w); |
|
|
1519 | } |
|
|
1520 | #endif |
|
|
1521 | |
|
|
1522 | void |
|
|
1523 | ev_idle_start (EV_P_ struct ev_idle *w) |
|
|
1524 | { |
739 | if (ev_is_active (w)) |
1525 | if (expect_false (ev_is_active (w))) |
740 | return; |
1526 | return; |
741 | |
1527 | |
|
|
1528 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1529 | array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2); |
|
|
1530 | idles [idlecnt - 1] = w; |
|
|
1531 | } |
|
|
1532 | |
|
|
1533 | void |
|
|
1534 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1535 | { |
|
|
1536 | ev_clear_pending (EV_A_ (W)w); |
|
|
1537 | if (expect_false (!ev_is_active (w))) |
|
|
1538 | return; |
|
|
1539 | |
|
|
1540 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
|
|
1541 | ev_stop (EV_A_ (W)w); |
|
|
1542 | } |
|
|
1543 | |
|
|
1544 | void |
|
|
1545 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1546 | { |
|
|
1547 | if (expect_false (ev_is_active (w))) |
|
|
1548 | return; |
|
|
1549 | |
|
|
1550 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1551 | array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
|
|
1552 | prepares [preparecnt - 1] = w; |
|
|
1553 | } |
|
|
1554 | |
|
|
1555 | void |
|
|
1556 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1557 | { |
|
|
1558 | ev_clear_pending (EV_A_ (W)w); |
|
|
1559 | if (expect_false (!ev_is_active (w))) |
|
|
1560 | return; |
|
|
1561 | |
|
|
1562 | prepares [((W)w)->active - 1] = prepares [--preparecnt]; |
|
|
1563 | ev_stop (EV_A_ (W)w); |
|
|
1564 | } |
|
|
1565 | |
|
|
1566 | void |
|
|
1567 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1568 | { |
|
|
1569 | if (expect_false (ev_is_active (w))) |
|
|
1570 | return; |
|
|
1571 | |
|
|
1572 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1573 | array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
1574 | checks [checkcnt - 1] = w; |
|
|
1575 | } |
|
|
1576 | |
|
|
1577 | void |
|
|
1578 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1579 | { |
|
|
1580 | ev_clear_pending (EV_A_ (W)w); |
|
|
1581 | if (expect_false (!ev_is_active (w))) |
|
|
1582 | return; |
|
|
1583 | |
|
|
1584 | checks [((W)w)->active - 1] = checks [--checkcnt]; |
|
|
1585 | ev_stop (EV_A_ (W)w); |
|
|
1586 | } |
|
|
1587 | |
|
|
1588 | #ifndef SA_RESTART |
|
|
1589 | # define SA_RESTART 0 |
|
|
1590 | #endif |
|
|
1591 | |
|
|
1592 | void |
|
|
1593 | ev_signal_start (EV_P_ struct ev_signal *w) |
|
|
1594 | { |
|
|
1595 | #if EV_MULTIPLICITY |
|
|
1596 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1597 | #endif |
|
|
1598 | if (expect_false (ev_is_active (w))) |
|
|
1599 | return; |
|
|
1600 | |
|
|
1601 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1602 | |
742 | ev_start ((W)w, 1); |
1603 | ev_start (EV_A_ (W)w, 1); |
743 | array_needsize (signals, signalmax, w->signum, signals_init); |
1604 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
744 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1605 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
745 | |
1606 | |
746 | if (!w->next) |
1607 | if (!((WL)w)->next) |
747 | { |
1608 | { |
|
|
1609 | #if _WIN32 |
|
|
1610 | signal (w->signum, sighandler); |
|
|
1611 | #else |
748 | struct sigaction sa; |
1612 | struct sigaction sa; |
749 | sa.sa_handler = sighandler; |
1613 | sa.sa_handler = sighandler; |
750 | sigfillset (&sa.sa_mask); |
1614 | sigfillset (&sa.sa_mask); |
751 | sa.sa_flags = 0; |
1615 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
752 | sigaction (w->signum, &sa, 0); |
1616 | sigaction (w->signum, &sa, 0); |
|
|
1617 | #endif |
753 | } |
1618 | } |
754 | } |
1619 | } |
755 | |
1620 | |
756 | void |
1621 | void |
757 | evsignal_stop (struct ev_signal *w) |
1622 | ev_signal_stop (EV_P_ struct ev_signal *w) |
758 | { |
1623 | { |
|
|
1624 | ev_clear_pending (EV_A_ (W)w); |
759 | if (!ev_is_active (w)) |
1625 | if (expect_false (!ev_is_active (w))) |
760 | return; |
1626 | return; |
761 | |
1627 | |
762 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1628 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
763 | ev_stop ((W)w); |
1629 | ev_stop (EV_A_ (W)w); |
764 | |
1630 | |
765 | if (!signals [w->signum - 1].head) |
1631 | if (!signals [w->signum - 1].head) |
766 | signal (w->signum, SIG_DFL); |
1632 | signal (w->signum, SIG_DFL); |
767 | } |
1633 | } |
768 | |
1634 | |
769 | void evidle_start (struct ev_idle *w) |
1635 | void |
|
|
1636 | ev_child_start (EV_P_ struct ev_child *w) |
770 | { |
1637 | { |
|
|
1638 | #if EV_MULTIPLICITY |
|
|
1639 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1640 | #endif |
771 | if (ev_is_active (w)) |
1641 | if (expect_false (ev_is_active (w))) |
772 | return; |
1642 | return; |
773 | |
1643 | |
774 | ev_start ((W)w, ++idlecnt); |
1644 | ev_start (EV_A_ (W)w, 1); |
775 | array_needsize (idles, idlemax, idlecnt, ); |
1645 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
776 | idles [idlecnt - 1] = w; |
|
|
777 | } |
1646 | } |
778 | |
1647 | |
779 | void evidle_stop (struct ev_idle *w) |
1648 | void |
|
|
1649 | ev_child_stop (EV_P_ struct ev_child *w) |
780 | { |
1650 | { |
781 | idles [w->active - 1] = idles [--idlecnt]; |
1651 | ev_clear_pending (EV_A_ (W)w); |
782 | ev_stop ((W)w); |
1652 | if (expect_false (!ev_is_active (w))) |
783 | } |
|
|
784 | |
|
|
785 | void evcheck_start (struct ev_check *w) |
|
|
786 | { |
|
|
787 | if (ev_is_active (w)) |
|
|
788 | return; |
1653 | return; |
789 | |
1654 | |
790 | ev_start ((W)w, ++checkcnt); |
1655 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
791 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
792 | checks [checkcnt - 1] = w; |
|
|
793 | } |
|
|
794 | |
|
|
795 | void evcheck_stop (struct ev_check *w) |
|
|
796 | { |
|
|
797 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
798 | ev_stop ((W)w); |
1656 | ev_stop (EV_A_ (W)w); |
799 | } |
1657 | } |
800 | |
1658 | |
801 | /*****************************************************************************/ |
1659 | /*****************************************************************************/ |
802 | |
1660 | |
803 | #if 0 |
1661 | struct ev_once |
804 | |
1662 | { |
805 | struct ev_io wio; |
1663 | struct ev_io io; |
806 | |
|
|
807 | static void |
|
|
808 | sin_cb (struct ev_io *w, int revents) |
|
|
809 | { |
|
|
810 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
811 | } |
|
|
812 | |
|
|
813 | static void |
|
|
814 | ocb (struct ev_timer *w, int revents) |
|
|
815 | { |
|
|
816 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
817 | evtimer_stop (w); |
|
|
818 | evtimer_start (w); |
|
|
819 | } |
|
|
820 | |
|
|
821 | static void |
|
|
822 | scb (struct ev_signal *w, int revents) |
|
|
823 | { |
|
|
824 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
825 | evio_stop (&wio); |
|
|
826 | evio_start (&wio); |
|
|
827 | } |
|
|
828 | |
|
|
829 | static void |
|
|
830 | gcb (struct ev_signal *w, int revents) |
|
|
831 | { |
|
|
832 | fprintf (stderr, "generic %x\n", revents); |
|
|
833 | |
|
|
834 | } |
|
|
835 | |
|
|
836 | int main (void) |
|
|
837 | { |
|
|
838 | ev_init (0); |
|
|
839 | |
|
|
840 | evio_init (&wio, sin_cb, 0, EV_READ); |
|
|
841 | evio_start (&wio); |
|
|
842 | |
|
|
843 | struct ev_timer t[10000]; |
|
|
844 | |
|
|
845 | #if 0 |
|
|
846 | int i; |
|
|
847 | for (i = 0; i < 10000; ++i) |
|
|
848 | { |
|
|
849 | struct ev_timer *w = t + i; |
|
|
850 | evw_init (w, ocb, i); |
|
|
851 | evtimer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
852 | evtimer_start (w); |
|
|
853 | if (drand48 () < 0.5) |
|
|
854 | evtimer_stop (w); |
|
|
855 | } |
|
|
856 | #endif |
|
|
857 | |
|
|
858 | struct ev_timer t1; |
1664 | struct ev_timer to; |
859 | evtimer_init (&t1, ocb, 5, 10); |
1665 | void (*cb)(int revents, void *arg); |
860 | evtimer_start (&t1); |
1666 | void *arg; |
|
|
1667 | }; |
861 | |
1668 | |
862 | struct ev_signal sig; |
1669 | static void |
863 | evsignal_init (&sig, scb, SIGQUIT); |
1670 | once_cb (EV_P_ struct ev_once *once, int revents) |
864 | evsignal_start (&sig); |
1671 | { |
|
|
1672 | void (*cb)(int revents, void *arg) = once->cb; |
|
|
1673 | void *arg = once->arg; |
865 | |
1674 | |
866 | struct ev_check cw; |
1675 | ev_io_stop (EV_A_ &once->io); |
867 | evcheck_init (&cw, gcb); |
1676 | ev_timer_stop (EV_A_ &once->to); |
868 | evcheck_start (&cw); |
1677 | ev_free (once); |
869 | |
1678 | |
870 | struct ev_idle iw; |
1679 | cb (revents, arg); |
871 | evidle_init (&iw, gcb); |
1680 | } |
872 | evidle_start (&iw); |
|
|
873 | |
1681 | |
874 | ev_loop (0); |
1682 | static void |
|
|
1683 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
|
|
1684 | { |
|
|
1685 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
|
|
1686 | } |
875 | |
1687 | |
|
|
1688 | static void |
|
|
1689 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
|
|
1690 | { |
|
|
1691 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
|
|
1692 | } |
|
|
1693 | |
|
|
1694 | void |
|
|
1695 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
|
|
1696 | { |
|
|
1697 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
|
|
1698 | |
|
|
1699 | if (expect_false (!once)) |
|
|
1700 | { |
|
|
1701 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
876 | return 0; |
1702 | return; |
877 | } |
1703 | } |
878 | |
1704 | |
879 | #endif |
1705 | once->cb = cb; |
|
|
1706 | once->arg = arg; |
880 | |
1707 | |
|
|
1708 | ev_init (&once->io, once_cb_io); |
|
|
1709 | if (fd >= 0) |
|
|
1710 | { |
|
|
1711 | ev_io_set (&once->io, fd, events); |
|
|
1712 | ev_io_start (EV_A_ &once->io); |
|
|
1713 | } |
881 | |
1714 | |
|
|
1715 | ev_init (&once->to, once_cb_to); |
|
|
1716 | if (timeout >= 0.) |
|
|
1717 | { |
|
|
1718 | ev_timer_set (&once->to, timeout, 0.); |
|
|
1719 | ev_timer_start (EV_A_ &once->to); |
|
|
1720 | } |
|
|
1721 | } |
882 | |
1722 | |
|
|
1723 | #ifdef __cplusplus |
|
|
1724 | } |
|
|
1725 | #endif |
883 | |
1726 | |