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Comparing libev/ev.c (file contents):
Revision 1.168 by root, Sat Dec 8 14:12:07 2007 UTC vs.
Revision 1.275 by root, Fri Dec 12 20:35:21 2008 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * modification, are permitted provided that the following conditions are 8 * tion, are permitted provided that the following conditions are met:
9 * met: 9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19 * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21 * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
22 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
23 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
25 * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
26 * OF THE POSSIBILITY OF SUCH DAMAGE.
10 * 27 *
11 * * Redistributions of source code must retain the above copyright 28 * Alternatively, the contents of this file may be used under the terms of
12 * notice, this list of conditions and the following disclaimer. 29 * the GNU General Public License ("GPL") version 2 or any later version,
13 * 30 * in which case the provisions of the GPL are applicable instead of
14 * * Redistributions in binary form must reproduce the above 31 * the above. If you wish to allow the use of your version of this file
15 * copyright notice, this list of conditions and the following 32 * only under the terms of the GPL and not to allow others to use your
16 * disclaimer in the documentation and/or other materials provided 33 * version of this file under the BSD license, indicate your decision
17 * with the distribution. 34 * by deleting the provisions above and replace them with the notice
18 * 35 * and other provisions required by the GPL. If you do not delete the
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 36 * provisions above, a recipient may use your version of this file under
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 37 * either the BSD or the GPL.
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 */ 38 */
31 39
32#ifdef __cplusplus 40#ifdef __cplusplus
33extern "C" { 41extern "C" {
34#endif 42#endif
35 43
44/* this big block deduces configuration from config.h */
36#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H 46# ifdef EV_CONFIG_H
38# include EV_CONFIG_H 47# include EV_CONFIG_H
39# else 48# else
40# include "config.h" 49# include "config.h"
50# endif
51
52# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 0
57# endif
58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1
60# endif
61# endif
41# endif 62# endif
42 63
43# if HAVE_CLOCK_GETTIME 64# if HAVE_CLOCK_GETTIME
44# ifndef EV_USE_MONOTONIC 65# ifndef EV_USE_MONOTONIC
45# define EV_USE_MONOTONIC 1 66# define EV_USE_MONOTONIC 1
… …
51# ifndef EV_USE_MONOTONIC 72# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0 73# define EV_USE_MONOTONIC 0
53# endif 74# endif
54# ifndef EV_USE_REALTIME 75# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0 76# define EV_USE_REALTIME 0
77# endif
78# endif
79
80# ifndef EV_USE_NANOSLEEP
81# if HAVE_NANOSLEEP
82# define EV_USE_NANOSLEEP 1
83# else
84# define EV_USE_NANOSLEEP 0
56# endif 85# endif
57# endif 86# endif
58 87
59# ifndef EV_USE_SELECT 88# ifndef EV_USE_SELECT
60# if HAVE_SELECT && HAVE_SYS_SELECT_H 89# if HAVE_SELECT && HAVE_SYS_SELECT_H
… …
102# else 131# else
103# define EV_USE_INOTIFY 0 132# define EV_USE_INOTIFY 0
104# endif 133# endif
105# endif 134# endif
106 135
136# ifndef EV_USE_EVENTFD
137# if HAVE_EVENTFD
138# define EV_USE_EVENTFD 1
139# else
140# define EV_USE_EVENTFD 0
141# endif
142# endif
143
107#endif 144#endif
108 145
109#include <math.h> 146#include <math.h>
110#include <stdlib.h> 147#include <stdlib.h>
111#include <fcntl.h> 148#include <fcntl.h>
… …
129#ifndef _WIN32 166#ifndef _WIN32
130# include <sys/time.h> 167# include <sys/time.h>
131# include <sys/wait.h> 168# include <sys/wait.h>
132# include <unistd.h> 169# include <unistd.h>
133#else 170#else
171# include <io.h>
134# define WIN32_LEAN_AND_MEAN 172# define WIN32_LEAN_AND_MEAN
135# include <windows.h> 173# include <windows.h>
136# ifndef EV_SELECT_IS_WINSOCKET 174# ifndef EV_SELECT_IS_WINSOCKET
137# define EV_SELECT_IS_WINSOCKET 1 175# define EV_SELECT_IS_WINSOCKET 1
138# endif 176# endif
139#endif 177#endif
140 178
141/**/ 179/* this block tries to deduce configuration from header-defined symbols and defaults */
180
181#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1
184# else
185# define EV_USE_CLOCK_SYSCALL 0
186# endif
187#endif
142 188
143#ifndef EV_USE_MONOTONIC 189#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1
192# else
144# define EV_USE_MONOTONIC 0 193# define EV_USE_MONOTONIC 0
194# endif
145#endif 195#endif
146 196
147#ifndef EV_USE_REALTIME 197#ifndef EV_USE_REALTIME
148# define EV_USE_REALTIME 0 198# define EV_USE_REALTIME 0
199#endif
200
201#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1
204# else
205# define EV_USE_NANOSLEEP 0
206# endif
149#endif 207#endif
150 208
151#ifndef EV_USE_SELECT 209#ifndef EV_USE_SELECT
152# define EV_USE_SELECT 1 210# define EV_USE_SELECT 1
153#endif 211#endif
… …
159# define EV_USE_POLL 1 217# define EV_USE_POLL 1
160# endif 218# endif
161#endif 219#endif
162 220
163#ifndef EV_USE_EPOLL 221#ifndef EV_USE_EPOLL
222# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
223# define EV_USE_EPOLL 1
224# else
164# define EV_USE_EPOLL 0 225# define EV_USE_EPOLL 0
226# endif
165#endif 227#endif
166 228
167#ifndef EV_USE_KQUEUE 229#ifndef EV_USE_KQUEUE
168# define EV_USE_KQUEUE 0 230# define EV_USE_KQUEUE 0
169#endif 231#endif
… …
171#ifndef EV_USE_PORT 233#ifndef EV_USE_PORT
172# define EV_USE_PORT 0 234# define EV_USE_PORT 0
173#endif 235#endif
174 236
175#ifndef EV_USE_INOTIFY 237#ifndef EV_USE_INOTIFY
238# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
239# define EV_USE_INOTIFY 1
240# else
176# define EV_USE_INOTIFY 0 241# define EV_USE_INOTIFY 0
242# endif
177#endif 243#endif
178 244
179#ifndef EV_PID_HASHSIZE 245#ifndef EV_PID_HASHSIZE
180# if EV_MINIMAL 246# if EV_MINIMAL
181# define EV_PID_HASHSIZE 1 247# define EV_PID_HASHSIZE 1
… …
190# else 256# else
191# define EV_INOTIFY_HASHSIZE 16 257# define EV_INOTIFY_HASHSIZE 16
192# endif 258# endif
193#endif 259#endif
194 260
195/**/ 261#ifndef EV_USE_EVENTFD
262# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
263# define EV_USE_EVENTFD 1
264# else
265# define EV_USE_EVENTFD 0
266# endif
267#endif
268
269#if 0 /* debugging */
270# define EV_VERIFY 3
271# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1
273#endif
274
275#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL
277#endif
278
279#ifndef EV_USE_4HEAP
280# define EV_USE_4HEAP !EV_MINIMAL
281#endif
282
283#ifndef EV_HEAP_CACHE_AT
284# define EV_HEAP_CACHE_AT !EV_MINIMAL
285#endif
286
287/* this block fixes any misconfiguration where we know we run into trouble otherwise */
196 288
197#ifndef CLOCK_MONOTONIC 289#ifndef CLOCK_MONOTONIC
198# undef EV_USE_MONOTONIC 290# undef EV_USE_MONOTONIC
199# define EV_USE_MONOTONIC 0 291# define EV_USE_MONOTONIC 0
200#endif 292#endif
… …
202#ifndef CLOCK_REALTIME 294#ifndef CLOCK_REALTIME
203# undef EV_USE_REALTIME 295# undef EV_USE_REALTIME
204# define EV_USE_REALTIME 0 296# define EV_USE_REALTIME 0
205#endif 297#endif
206 298
299#if !EV_STAT_ENABLE
300# undef EV_USE_INOTIFY
301# define EV_USE_INOTIFY 0
302#endif
303
304#if !EV_USE_NANOSLEEP
305# ifndef _WIN32
306# include <sys/select.h>
307# endif
308#endif
309
310#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h>
313# include <sys/inotify.h>
314/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
315# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0
318# endif
319#endif
320
207#if EV_SELECT_IS_WINSOCKET 321#if EV_SELECT_IS_WINSOCKET
208# include <winsock.h> 322# include <winsock.h>
209#endif 323#endif
210 324
211#if !EV_STAT_ENABLE 325/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326/* which makes programs even slower. might work on other unices, too. */
327#if EV_USE_CLOCK_SYSCALL
328# include <syscall.h>
329# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330# undef EV_USE_MONOTONIC
212# define EV_USE_INOTIFY 0 331# define EV_USE_MONOTONIC 1
332#endif
333
334#if EV_USE_EVENTFD
335/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336# include <stdint.h>
337# ifdef __cplusplus
338extern "C" {
213#endif 339# endif
214 340int eventfd (unsigned int initval, int flags);
215#if EV_USE_INOTIFY 341# ifdef __cplusplus
216# include <sys/inotify.h> 342}
343# endif
217#endif 344#endif
218 345
219/**/ 346/**/
347
348#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
350#else
351# define EV_FREQUENT_CHECK do { } while (0)
352#endif
353
354/*
355 * This is used to avoid floating point rounding problems.
356 * It is added to ev_rt_now when scheduling periodics
357 * to ensure progress, time-wise, even when rounding
358 * errors are against us.
359 * This value is good at least till the year 4000.
360 * Better solutions welcome.
361 */
362#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
220 363
221#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 364#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
222#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ 365#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
223/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ 366/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
224 367
225#if __GNUC__ >= 3 368#if __GNUC__ >= 4
226# define expect(expr,value) __builtin_expect ((expr),(value)) 369# define expect(expr,value) __builtin_expect ((expr),(value))
227# define inline_size static inline /* inline for codesize */
228# if EV_MINIMAL
229# define noinline __attribute__ ((noinline)) 370# define noinline __attribute__ ((noinline))
230# define inline_speed static noinline
231# else
232# define noinline
233# define inline_speed static inline
234# endif
235#else 371#else
236# define expect(expr,value) (expr) 372# define expect(expr,value) (expr)
237# define inline_speed static
238# define inline_size static
239# define noinline 373# define noinline
374# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
375# define inline
376# endif
240#endif 377#endif
241 378
242#define expect_false(expr) expect ((expr) != 0, 0) 379#define expect_false(expr) expect ((expr) != 0, 0)
243#define expect_true(expr) expect ((expr) != 0, 1) 380#define expect_true(expr) expect ((expr) != 0, 1)
381#define inline_size static inline
382
383#if EV_MINIMAL
384# define inline_speed static noinline
385#else
386# define inline_speed static inline
387#endif
244 388
245#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) 389#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
246#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) 390#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
247 391
248#define EMPTY /* required for microsofts broken pseudo-c compiler */ 392#define EMPTY /* required for microsofts broken pseudo-c compiler */
… …
250 394
251typedef ev_watcher *W; 395typedef ev_watcher *W;
252typedef ev_watcher_list *WL; 396typedef ev_watcher_list *WL;
253typedef ev_watcher_time *WT; 397typedef ev_watcher_time *WT;
254 398
399#define ev_active(w) ((W)(w))->active
400#define ev_at(w) ((WT)(w))->at
401
402#if EV_USE_MONOTONIC
403/* sig_atomic_t is used to avoid per-thread variables or locking but still */
404/* giving it a reasonably high chance of working on typical architetcures */
255static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 405static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
406#endif
256 407
257#ifdef _WIN32 408#ifdef _WIN32
258# include "ev_win32.c" 409# include "ev_win32.c"
259#endif 410#endif
260 411
… …
267{ 418{
268 syserr_cb = cb; 419 syserr_cb = cb;
269} 420}
270 421
271static void noinline 422static void noinline
272syserr (const char *msg) 423ev_syserr (const char *msg)
273{ 424{
274 if (!msg) 425 if (!msg)
275 msg = "(libev) system error"; 426 msg = "(libev) system error";
276 427
277 if (syserr_cb) 428 if (syserr_cb)
… …
281 perror (msg); 432 perror (msg);
282 abort (); 433 abort ();
283 } 434 }
284} 435}
285 436
437static void *
438ev_realloc_emul (void *ptr, long size)
439{
440 /* some systems, notably openbsd and darwin, fail to properly
441 * implement realloc (x, 0) (as required by both ansi c-98 and
442 * the single unix specification, so work around them here.
443 */
444
445 if (size)
446 return realloc (ptr, size);
447
448 free (ptr);
449 return 0;
450}
451
286static void *(*alloc)(void *ptr, long size); 452static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
287 453
288void 454void
289ev_set_allocator (void *(*cb)(void *ptr, long size)) 455ev_set_allocator (void *(*cb)(void *ptr, long size))
290{ 456{
291 alloc = cb; 457 alloc = cb;
292} 458}
293 459
294inline_speed void * 460inline_speed void *
295ev_realloc (void *ptr, long size) 461ev_realloc (void *ptr, long size)
296{ 462{
297 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 463 ptr = alloc (ptr, size);
298 464
299 if (!ptr && size) 465 if (!ptr && size)
300 { 466 {
301 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 467 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
302 abort (); 468 abort ();
… …
313typedef struct 479typedef struct
314{ 480{
315 WL head; 481 WL head;
316 unsigned char events; 482 unsigned char events;
317 unsigned char reify; 483 unsigned char reify;
484 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
485 unsigned char unused;
486#if EV_USE_EPOLL
487 unsigned int egen; /* generation counter to counter epoll bugs */
488#endif
318#if EV_SELECT_IS_WINSOCKET 489#if EV_SELECT_IS_WINSOCKET
319 SOCKET handle; 490 SOCKET handle;
320#endif 491#endif
321} ANFD; 492} ANFD;
322 493
… …
325 W w; 496 W w;
326 int events; 497 int events;
327} ANPENDING; 498} ANPENDING;
328 499
329#if EV_USE_INOTIFY 500#if EV_USE_INOTIFY
501/* hash table entry per inotify-id */
330typedef struct 502typedef struct
331{ 503{
332 WL head; 504 WL head;
333} ANFS; 505} ANFS;
506#endif
507
508/* Heap Entry */
509#if EV_HEAP_CACHE_AT
510 typedef struct {
511 ev_tstamp at;
512 WT w;
513 } ANHE;
514
515 #define ANHE_w(he) (he).w /* access watcher, read-write */
516 #define ANHE_at(he) (he).at /* access cached at, read-only */
517 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
518#else
519 typedef WT ANHE;
520
521 #define ANHE_w(he) (he)
522 #define ANHE_at(he) (he)->at
523 #define ANHE_at_cache(he)
334#endif 524#endif
335 525
336#if EV_MULTIPLICITY 526#if EV_MULTIPLICITY
337 527
338 struct ev_loop 528 struct ev_loop
… …
396{ 586{
397 return ev_rt_now; 587 return ev_rt_now;
398} 588}
399#endif 589#endif
400 590
591void
592ev_sleep (ev_tstamp delay)
593{
594 if (delay > 0.)
595 {
596#if EV_USE_NANOSLEEP
597 struct timespec ts;
598
599 ts.tv_sec = (time_t)delay;
600 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
601
602 nanosleep (&ts, 0);
603#elif defined(_WIN32)
604 Sleep ((unsigned long)(delay * 1e3));
605#else
606 struct timeval tv;
607
608 tv.tv_sec = (time_t)delay;
609 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
610
611 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
612 /* somehting nto guaranteed by newer posix versions, but guaranteed */
613 /* by older ones */
614 select (0, 0, 0, 0, &tv);
615#endif
616 }
617}
618
619/*****************************************************************************/
620
621#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
622
401int inline_size 623int inline_size
402array_nextsize (int elem, int cur, int cnt) 624array_nextsize (int elem, int cur, int cnt)
403{ 625{
404 int ncur = cur + 1; 626 int ncur = cur + 1;
405 627
406 do 628 do
407 ncur <<= 1; 629 ncur <<= 1;
408 while (cnt > ncur); 630 while (cnt > ncur);
409 631
410 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 632 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
411 if (elem * ncur > 4096) 633 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
412 { 634 {
413 ncur *= elem; 635 ncur *= elem;
414 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 636 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
415 ncur = ncur - sizeof (void *) * 4; 637 ncur = ncur - sizeof (void *) * 4;
416 ncur /= elem; 638 ncur /= elem;
417 } 639 }
418 640
419 return ncur; 641 return ncur;
420} 642}
421 643
422inline_speed void * 644static noinline void *
423array_realloc (int elem, void *base, int *cur, int cnt) 645array_realloc (int elem, void *base, int *cur, int cnt)
424{ 646{
425 *cur = array_nextsize (elem, *cur, cnt); 647 *cur = array_nextsize (elem, *cur, cnt);
426 return ev_realloc (base, elem * *cur); 648 return ev_realloc (base, elem * *cur);
427} 649}
650
651#define array_init_zero(base,count) \
652 memset ((void *)(base), 0, sizeof (*(base)) * (count))
428 653
429#define array_needsize(type,base,cur,cnt,init) \ 654#define array_needsize(type,base,cur,cnt,init) \
430 if (expect_false ((cnt) > (cur))) \ 655 if (expect_false ((cnt) > (cur))) \
431 { \ 656 { \
432 int ocur_ = (cur); \ 657 int ocur_ = (cur); \
… …
452 677
453void noinline 678void noinline
454ev_feed_event (EV_P_ void *w, int revents) 679ev_feed_event (EV_P_ void *w, int revents)
455{ 680{
456 W w_ = (W)w; 681 W w_ = (W)w;
682 int pri = ABSPRI (w_);
457 683
458 if (expect_false (w_->pending)) 684 if (expect_false (w_->pending))
685 pendings [pri][w_->pending - 1].events |= revents;
686 else
459 { 687 {
688 w_->pending = ++pendingcnt [pri];
689 array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
690 pendings [pri][w_->pending - 1].w = w_;
460 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 691 pendings [pri][w_->pending - 1].events = revents;
461 return;
462 } 692 }
463
464 w_->pending = ++pendingcnt [ABSPRI (w_)];
465 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
466 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
467 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
468} 693}
469 694
470void inline_size 695void inline_speed
471queue_events (EV_P_ W *events, int eventcnt, int type) 696queue_events (EV_P_ W *events, int eventcnt, int type)
472{ 697{
473 int i; 698 int i;
474 699
475 for (i = 0; i < eventcnt; ++i) 700 for (i = 0; i < eventcnt; ++i)
476 ev_feed_event (EV_A_ events [i], type); 701 ev_feed_event (EV_A_ events [i], type);
477} 702}
478 703
479/*****************************************************************************/ 704/*****************************************************************************/
480
481void inline_size
482anfds_init (ANFD *base, int count)
483{
484 while (count--)
485 {
486 base->head = 0;
487 base->events = EV_NONE;
488 base->reify = 0;
489
490 ++base;
491 }
492}
493 705
494void inline_speed 706void inline_speed
495fd_event (EV_P_ int fd, int revents) 707fd_event (EV_P_ int fd, int revents)
496{ 708{
497 ANFD *anfd = anfds + fd; 709 ANFD *anfd = anfds + fd;
… …
522 { 734 {
523 int fd = fdchanges [i]; 735 int fd = fdchanges [i];
524 ANFD *anfd = anfds + fd; 736 ANFD *anfd = anfds + fd;
525 ev_io *w; 737 ev_io *w;
526 738
527 int events = 0; 739 unsigned char events = 0;
528 740
529 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) 741 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
530 events |= w->events; 742 events |= (unsigned char)w->events;
531 743
532#if EV_SELECT_IS_WINSOCKET 744#if EV_SELECT_IS_WINSOCKET
533 if (events) 745 if (events)
534 { 746 {
535 unsigned long argp; 747 unsigned long arg;
748 #ifdef EV_FD_TO_WIN32_HANDLE
749 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
750 #else
536 anfd->handle = _get_osfhandle (fd); 751 anfd->handle = _get_osfhandle (fd);
752 #endif
537 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 753 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
538 } 754 }
539#endif 755#endif
540 756
757 {
758 unsigned char o_events = anfd->events;
759 unsigned char o_reify = anfd->reify;
760
541 anfd->reify = 0; 761 anfd->reify = 0;
542
543 backend_modify (EV_A_ fd, anfd->events, events);
544 anfd->events = events; 762 anfd->events = events;
763
764 if (o_events != events || o_reify & EV_IOFDSET)
765 backend_modify (EV_A_ fd, o_events, events);
766 }
545 } 767 }
546 768
547 fdchangecnt = 0; 769 fdchangecnt = 0;
548} 770}
549 771
550void inline_size 772void inline_size
551fd_change (EV_P_ int fd) 773fd_change (EV_P_ int fd, int flags)
552{ 774{
553 if (expect_false (anfds [fd].reify)) 775 unsigned char reify = anfds [fd].reify;
554 return;
555
556 anfds [fd].reify = 1; 776 anfds [fd].reify |= flags;
557 777
778 if (expect_true (!reify))
779 {
558 ++fdchangecnt; 780 ++fdchangecnt;
559 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 781 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
560 fdchanges [fdchangecnt - 1] = fd; 782 fdchanges [fdchangecnt - 1] = fd;
783 }
561} 784}
562 785
563void inline_speed 786void inline_speed
564fd_kill (EV_P_ int fd) 787fd_kill (EV_P_ int fd)
565{ 788{
… …
588{ 811{
589 int fd; 812 int fd;
590 813
591 for (fd = 0; fd < anfdmax; ++fd) 814 for (fd = 0; fd < anfdmax; ++fd)
592 if (anfds [fd].events) 815 if (anfds [fd].events)
593 if (!fd_valid (fd) == -1 && errno == EBADF) 816 if (!fd_valid (fd) && errno == EBADF)
594 fd_kill (EV_A_ fd); 817 fd_kill (EV_A_ fd);
595} 818}
596 819
597/* called on ENOMEM in select/poll to kill some fds and retry */ 820/* called on ENOMEM in select/poll to kill some fds and retry */
598static void noinline 821static void noinline
… …
616 839
617 for (fd = 0; fd < anfdmax; ++fd) 840 for (fd = 0; fd < anfdmax; ++fd)
618 if (anfds [fd].events) 841 if (anfds [fd].events)
619 { 842 {
620 anfds [fd].events = 0; 843 anfds [fd].events = 0;
844 anfds [fd].emask = 0;
621 fd_change (EV_A_ fd); 845 fd_change (EV_A_ fd, EV_IOFDSET | 1);
622 } 846 }
623} 847}
624 848
625/*****************************************************************************/ 849/*****************************************************************************/
626 850
851/*
852 * the heap functions want a real array index. array index 0 uis guaranteed to not
853 * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
854 * the branching factor of the d-tree.
855 */
856
857/*
858 * at the moment we allow libev the luxury of two heaps,
859 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
860 * which is more cache-efficient.
861 * the difference is about 5% with 50000+ watchers.
862 */
863#if EV_USE_4HEAP
864
865#define DHEAP 4
866#define HEAP0 (DHEAP - 1) /* index of first element in heap */
867#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
868#define UPHEAP_DONE(p,k) ((p) == (k))
869
870/* away from the root */
627void inline_speed 871void inline_speed
628upheap (WT *heap, int k) 872downheap (ANHE *heap, int N, int k)
629{ 873{
630 WT w = heap [k]; 874 ANHE he = heap [k];
875 ANHE *E = heap + N + HEAP0;
631 876
632 while (k && heap [k >> 1]->at > w->at) 877 for (;;)
633 {
634 heap [k] = heap [k >> 1];
635 ((W)heap [k])->active = k + 1;
636 k >>= 1;
637 } 878 {
879 ev_tstamp minat;
880 ANHE *minpos;
881 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
638 882
883 /* find minimum child */
884 if (expect_true (pos + DHEAP - 1 < E))
885 {
886 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
887 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
888 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
889 if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
890 }
891 else if (pos < E)
892 {
893 /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
894 if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
895 if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
896 if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
897 }
898 else
899 break;
900
901 if (ANHE_at (he) <= minat)
902 break;
903
904 heap [k] = *minpos;
905 ev_active (ANHE_w (*minpos)) = k;
906
907 k = minpos - heap;
908 }
909
639 heap [k] = w; 910 heap [k] = he;
640 ((W)heap [k])->active = k + 1; 911 ev_active (ANHE_w (he)) = k;
641
642} 912}
643 913
914#else /* 4HEAP */
915
916#define HEAP0 1
917#define HPARENT(k) ((k) >> 1)
918#define UPHEAP_DONE(p,k) (!(p))
919
920/* away from the root */
644void inline_speed 921void inline_speed
645downheap (WT *heap, int N, int k) 922downheap (ANHE *heap, int N, int k)
646{ 923{
647 WT w = heap [k]; 924 ANHE he = heap [k];
648 925
649 while (k < (N >> 1)) 926 for (;;)
650 { 927 {
651 int j = k << 1; 928 int c = k << 1;
652 929
653 if (j + 1 < N && heap [j]->at > heap [j + 1]->at) 930 if (c > N + HEAP0 - 1)
654 ++j;
655
656 if (w->at <= heap [j]->at)
657 break; 931 break;
658 932
933 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
934 ? 1 : 0;
935
936 if (ANHE_at (he) <= ANHE_at (heap [c]))
937 break;
938
659 heap [k] = heap [j]; 939 heap [k] = heap [c];
660 ((W)heap [k])->active = k + 1; 940 ev_active (ANHE_w (heap [k])) = k;
941
661 k = j; 942 k = c;
662 } 943 }
663 944
664 heap [k] = w; 945 heap [k] = he;
665 ((W)heap [k])->active = k + 1; 946 ev_active (ANHE_w (he)) = k;
947}
948#endif
949
950/* towards the root */
951void inline_speed
952upheap (ANHE *heap, int k)
953{
954 ANHE he = heap [k];
955
956 for (;;)
957 {
958 int p = HPARENT (k);
959
960 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
961 break;
962
963 heap [k] = heap [p];
964 ev_active (ANHE_w (heap [k])) = k;
965 k = p;
966 }
967
968 heap [k] = he;
969 ev_active (ANHE_w (he)) = k;
666} 970}
667 971
668void inline_size 972void inline_size
669adjustheap (WT *heap, int N, int k) 973adjustheap (ANHE *heap, int N, int k)
670{ 974{
975 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
671 upheap (heap, k); 976 upheap (heap, k);
977 else
672 downheap (heap, N, k); 978 downheap (heap, N, k);
979}
980
981/* rebuild the heap: this function is used only once and executed rarely */
982void inline_size
983reheap (ANHE *heap, int N)
984{
985 int i;
986
987 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
988 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
989 for (i = 0; i < N; ++i)
990 upheap (heap, i + HEAP0);
673} 991}
674 992
675/*****************************************************************************/ 993/*****************************************************************************/
676 994
677typedef struct 995typedef struct
678{ 996{
679 WL head; 997 WL head;
680 sig_atomic_t volatile gotsig; 998 EV_ATOMIC_T gotsig;
681} ANSIG; 999} ANSIG;
682 1000
683static ANSIG *signals; 1001static ANSIG *signals;
684static int signalmax; 1002static int signalmax;
685 1003
686static int sigpipe [2]; 1004static EV_ATOMIC_T gotsig;
687static sig_atomic_t volatile gotsig;
688static ev_io sigev;
689 1005
1006/*****************************************************************************/
1007
690void inline_size 1008void inline_speed
691signals_init (ANSIG *base, int count)
692{
693 while (count--)
694 {
695 base->head = 0;
696 base->gotsig = 0;
697
698 ++base;
699 }
700}
701
702static void
703sighandler (int signum)
704{
705#if _WIN32
706 signal (signum, sighandler);
707#endif
708
709 signals [signum - 1].gotsig = 1;
710
711 if (!gotsig)
712 {
713 int old_errno = errno;
714 gotsig = 1;
715 write (sigpipe [1], &signum, 1);
716 errno = old_errno;
717 }
718}
719
720void noinline
721ev_feed_signal_event (EV_P_ int signum)
722{
723 WL w;
724
725#if EV_MULTIPLICITY
726 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
727#endif
728
729 --signum;
730
731 if (signum < 0 || signum >= signalmax)
732 return;
733
734 signals [signum].gotsig = 0;
735
736 for (w = signals [signum].head; w; w = w->next)
737 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
738}
739
740static void
741sigcb (EV_P_ ev_io *iow, int revents)
742{
743 int signum;
744
745 read (sigpipe [0], &revents, 1);
746 gotsig = 0;
747
748 for (signum = signalmax; signum--; )
749 if (signals [signum].gotsig)
750 ev_feed_signal_event (EV_A_ signum + 1);
751}
752
753void inline_size
754fd_intern (int fd) 1009fd_intern (int fd)
755{ 1010{
756#ifdef _WIN32 1011#ifdef _WIN32
757 int arg = 1; 1012 unsigned long arg = 1;
758 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1013 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
759#else 1014#else
760 fcntl (fd, F_SETFD, FD_CLOEXEC); 1015 fcntl (fd, F_SETFD, FD_CLOEXEC);
761 fcntl (fd, F_SETFL, O_NONBLOCK); 1016 fcntl (fd, F_SETFL, O_NONBLOCK);
762#endif 1017#endif
763} 1018}
764 1019
765static void noinline 1020static void noinline
766siginit (EV_P) 1021evpipe_init (EV_P)
767{ 1022{
1023 if (!ev_is_active (&pipeev))
1024 {
1025#if EV_USE_EVENTFD
1026 if ((evfd = eventfd (0, 0)) >= 0)
1027 {
1028 evpipe [0] = -1;
1029 fd_intern (evfd);
1030 ev_io_set (&pipeev, evfd, EV_READ);
1031 }
1032 else
1033#endif
1034 {
1035 while (pipe (evpipe))
1036 ev_syserr ("(libev) error creating signal/async pipe");
1037
768 fd_intern (sigpipe [0]); 1038 fd_intern (evpipe [0]);
769 fd_intern (sigpipe [1]); 1039 fd_intern (evpipe [1]);
1040 ev_io_set (&pipeev, evpipe [0], EV_READ);
1041 }
770 1042
771 ev_io_set (&sigev, sigpipe [0], EV_READ);
772 ev_io_start (EV_A_ &sigev); 1043 ev_io_start (EV_A_ &pipeev);
773 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1044 ev_unref (EV_A); /* watcher should not keep loop alive */
1045 }
1046}
1047
1048void inline_size
1049evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1050{
1051 if (!*flag)
1052 {
1053 int old_errno = errno; /* save errno because write might clobber it */
1054
1055 *flag = 1;
1056
1057#if EV_USE_EVENTFD
1058 if (evfd >= 0)
1059 {
1060 uint64_t counter = 1;
1061 write (evfd, &counter, sizeof (uint64_t));
1062 }
1063 else
1064#endif
1065 write (evpipe [1], &old_errno, 1);
1066
1067 errno = old_errno;
1068 }
1069}
1070
1071static void
1072pipecb (EV_P_ ev_io *iow, int revents)
1073{
1074#if EV_USE_EVENTFD
1075 if (evfd >= 0)
1076 {
1077 uint64_t counter;
1078 read (evfd, &counter, sizeof (uint64_t));
1079 }
1080 else
1081#endif
1082 {
1083 char dummy;
1084 read (evpipe [0], &dummy, 1);
1085 }
1086
1087 if (gotsig && ev_is_default_loop (EV_A))
1088 {
1089 int signum;
1090 gotsig = 0;
1091
1092 for (signum = signalmax; signum--; )
1093 if (signals [signum].gotsig)
1094 ev_feed_signal_event (EV_A_ signum + 1);
1095 }
1096
1097#if EV_ASYNC_ENABLE
1098 if (gotasync)
1099 {
1100 int i;
1101 gotasync = 0;
1102
1103 for (i = asynccnt; i--; )
1104 if (asyncs [i]->sent)
1105 {
1106 asyncs [i]->sent = 0;
1107 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1108 }
1109 }
1110#endif
774} 1111}
775 1112
776/*****************************************************************************/ 1113/*****************************************************************************/
777 1114
1115static void
1116ev_sighandler (int signum)
1117{
1118#if EV_MULTIPLICITY
1119 struct ev_loop *loop = &default_loop_struct;
1120#endif
1121
1122#if _WIN32
1123 signal (signum, ev_sighandler);
1124#endif
1125
1126 signals [signum - 1].gotsig = 1;
1127 evpipe_write (EV_A_ &gotsig);
1128}
1129
1130void noinline
1131ev_feed_signal_event (EV_P_ int signum)
1132{
1133 WL w;
1134
1135#if EV_MULTIPLICITY
1136 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1137#endif
1138
1139 --signum;
1140
1141 if (signum < 0 || signum >= signalmax)
1142 return;
1143
1144 signals [signum].gotsig = 0;
1145
1146 for (w = signals [signum].head; w; w = w->next)
1147 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1148}
1149
1150/*****************************************************************************/
1151
778static ev_child *childs [EV_PID_HASHSIZE]; 1152static WL childs [EV_PID_HASHSIZE];
779 1153
780#ifndef _WIN32 1154#ifndef _WIN32
781 1155
782static ev_signal childev; 1156static ev_signal childev;
783 1157
1158#ifndef WIFCONTINUED
1159# define WIFCONTINUED(status) 0
1160#endif
1161
784void inline_speed 1162void inline_speed
785child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1163child_reap (EV_P_ int chain, int pid, int status)
786{ 1164{
787 ev_child *w; 1165 ev_child *w;
1166 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
788 1167
789 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1168 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1169 {
790 if (w->pid == pid || !w->pid) 1170 if ((w->pid == pid || !w->pid)
1171 && (!traced || (w->flags & 1)))
791 { 1172 {
792 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ 1173 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
793 w->rpid = pid; 1174 w->rpid = pid;
794 w->rstatus = status; 1175 w->rstatus = status;
795 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1176 ev_feed_event (EV_A_ (W)w, EV_CHILD);
796 } 1177 }
1178 }
797} 1179}
798 1180
799#ifndef WCONTINUED 1181#ifndef WCONTINUED
800# define WCONTINUED 0 1182# define WCONTINUED 0
801#endif 1183#endif
… …
810 if (!WCONTINUED 1192 if (!WCONTINUED
811 || errno != EINVAL 1193 || errno != EINVAL
812 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1194 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
813 return; 1195 return;
814 1196
815 /* make sure we are called again until all childs have been reaped */ 1197 /* make sure we are called again until all children have been reaped */
816 /* we need to do it this way so that the callback gets called before we continue */ 1198 /* we need to do it this way so that the callback gets called before we continue */
817 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1199 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
818 1200
819 child_reap (EV_A_ sw, pid, pid, status); 1201 child_reap (EV_A_ pid, pid, status);
820 if (EV_PID_HASHSIZE > 1) 1202 if (EV_PID_HASHSIZE > 1)
821 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1203 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
822} 1204}
823 1205
824#endif 1206#endif
825 1207
826/*****************************************************************************/ 1208/*****************************************************************************/
… …
898} 1280}
899 1281
900unsigned int 1282unsigned int
901ev_embeddable_backends (void) 1283ev_embeddable_backends (void)
902{ 1284{
903 return EVBACKEND_EPOLL 1285 int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
904 | EVBACKEND_KQUEUE 1286
905 | EVBACKEND_PORT; 1287 /* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1288 /* please fix it and tell me how to detect the fix */
1289 flags &= ~EVBACKEND_EPOLL;
1290
1291 return flags;
906} 1292}
907 1293
908unsigned int 1294unsigned int
909ev_backend (EV_P) 1295ev_backend (EV_P)
910{ 1296{
… …
913 1299
914unsigned int 1300unsigned int
915ev_loop_count (EV_P) 1301ev_loop_count (EV_P)
916{ 1302{
917 return loop_count; 1303 return loop_count;
1304}
1305
1306void
1307ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1308{
1309 io_blocktime = interval;
1310}
1311
1312void
1313ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1314{
1315 timeout_blocktime = interval;
918} 1316}
919 1317
920static void noinline 1318static void noinline
921loop_init (EV_P_ unsigned int flags) 1319loop_init (EV_P_ unsigned int flags)
922{ 1320{
… …
928 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1326 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
929 have_monotonic = 1; 1327 have_monotonic = 1;
930 } 1328 }
931#endif 1329#endif
932 1330
933 ev_rt_now = ev_time (); 1331 ev_rt_now = ev_time ();
934 mn_now = get_clock (); 1332 mn_now = get_clock ();
935 now_floor = mn_now; 1333 now_floor = mn_now;
936 rtmn_diff = ev_rt_now - mn_now; 1334 rtmn_diff = ev_rt_now - mn_now;
1335
1336 io_blocktime = 0.;
1337 timeout_blocktime = 0.;
1338 backend = 0;
1339 backend_fd = -1;
1340 gotasync = 0;
1341#if EV_USE_INOTIFY
1342 fs_fd = -2;
1343#endif
937 1344
938 /* pid check not overridable via env */ 1345 /* pid check not overridable via env */
939#ifndef _WIN32 1346#ifndef _WIN32
940 if (flags & EVFLAG_FORKCHECK) 1347 if (flags & EVFLAG_FORKCHECK)
941 curpid = getpid (); 1348 curpid = getpid ();
… …
944 if (!(flags & EVFLAG_NOENV) 1351 if (!(flags & EVFLAG_NOENV)
945 && !enable_secure () 1352 && !enable_secure ()
946 && getenv ("LIBEV_FLAGS")) 1353 && getenv ("LIBEV_FLAGS"))
947 flags = atoi (getenv ("LIBEV_FLAGS")); 1354 flags = atoi (getenv ("LIBEV_FLAGS"));
948 1355
949 if (!(flags & 0x0000ffffUL)) 1356 if (!(flags & 0x0000ffffU))
950 flags |= ev_recommended_backends (); 1357 flags |= ev_recommended_backends ();
951
952 backend = 0;
953 backend_fd = -1;
954#if EV_USE_INOTIFY
955 fs_fd = -2;
956#endif
957 1358
958#if EV_USE_PORT 1359#if EV_USE_PORT
959 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1360 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
960#endif 1361#endif
961#if EV_USE_KQUEUE 1362#if EV_USE_KQUEUE
… …
969#endif 1370#endif
970#if EV_USE_SELECT 1371#if EV_USE_SELECT
971 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1372 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
972#endif 1373#endif
973 1374
974 ev_init (&sigev, sigcb); 1375 ev_init (&pipeev, pipecb);
975 ev_set_priority (&sigev, EV_MAXPRI); 1376 ev_set_priority (&pipeev, EV_MAXPRI);
976 } 1377 }
977} 1378}
978 1379
979static void noinline 1380static void noinline
980loop_destroy (EV_P) 1381loop_destroy (EV_P)
981{ 1382{
982 int i; 1383 int i;
1384
1385 if (ev_is_active (&pipeev))
1386 {
1387 ev_ref (EV_A); /* signal watcher */
1388 ev_io_stop (EV_A_ &pipeev);
1389
1390#if EV_USE_EVENTFD
1391 if (evfd >= 0)
1392 close (evfd);
1393#endif
1394
1395 if (evpipe [0] >= 0)
1396 {
1397 close (evpipe [0]);
1398 close (evpipe [1]);
1399 }
1400 }
983 1401
984#if EV_USE_INOTIFY 1402#if EV_USE_INOTIFY
985 if (fs_fd >= 0) 1403 if (fs_fd >= 0)
986 close (fs_fd); 1404 close (fs_fd);
987#endif 1405#endif
… …
1010 array_free (pending, [i]); 1428 array_free (pending, [i]);
1011#if EV_IDLE_ENABLE 1429#if EV_IDLE_ENABLE
1012 array_free (idle, [i]); 1430 array_free (idle, [i]);
1013#endif 1431#endif
1014 } 1432 }
1433
1434 ev_free (anfds); anfdmax = 0;
1015 1435
1016 /* have to use the microsoft-never-gets-it-right macro */ 1436 /* have to use the microsoft-never-gets-it-right macro */
1017 array_free (fdchange, EMPTY); 1437 array_free (fdchange, EMPTY);
1018 array_free (timer, EMPTY); 1438 array_free (timer, EMPTY);
1019#if EV_PERIODIC_ENABLE 1439#if EV_PERIODIC_ENABLE
1020 array_free (periodic, EMPTY); 1440 array_free (periodic, EMPTY);
1021#endif 1441#endif
1442#if EV_FORK_ENABLE
1443 array_free (fork, EMPTY);
1444#endif
1022 array_free (prepare, EMPTY); 1445 array_free (prepare, EMPTY);
1023 array_free (check, EMPTY); 1446 array_free (check, EMPTY);
1447#if EV_ASYNC_ENABLE
1448 array_free (async, EMPTY);
1449#endif
1024 1450
1025 backend = 0; 1451 backend = 0;
1026} 1452}
1027 1453
1454#if EV_USE_INOTIFY
1028void inline_size infy_fork (EV_P); 1455void inline_size infy_fork (EV_P);
1456#endif
1029 1457
1030void inline_size 1458void inline_size
1031loop_fork (EV_P) 1459loop_fork (EV_P)
1032{ 1460{
1033#if EV_USE_PORT 1461#if EV_USE_PORT
… …
1041#endif 1469#endif
1042#if EV_USE_INOTIFY 1470#if EV_USE_INOTIFY
1043 infy_fork (EV_A); 1471 infy_fork (EV_A);
1044#endif 1472#endif
1045 1473
1046 if (ev_is_active (&sigev)) 1474 if (ev_is_active (&pipeev))
1047 { 1475 {
1048 /* default loop */ 1476 /* this "locks" the handlers against writing to the pipe */
1477 /* while we modify the fd vars */
1478 gotsig = 1;
1479#if EV_ASYNC_ENABLE
1480 gotasync = 1;
1481#endif
1049 1482
1050 ev_ref (EV_A); 1483 ev_ref (EV_A);
1051 ev_io_stop (EV_A_ &sigev); 1484 ev_io_stop (EV_A_ &pipeev);
1485
1486#if EV_USE_EVENTFD
1487 if (evfd >= 0)
1488 close (evfd);
1489#endif
1490
1491 if (evpipe [0] >= 0)
1492 {
1052 close (sigpipe [0]); 1493 close (evpipe [0]);
1053 close (sigpipe [1]); 1494 close (evpipe [1]);
1495 }
1054 1496
1055 while (pipe (sigpipe))
1056 syserr ("(libev) error creating pipe");
1057
1058 siginit (EV_A); 1497 evpipe_init (EV_A);
1498 /* now iterate over everything, in case we missed something */
1499 pipecb (EV_A_ &pipeev, EV_READ);
1059 } 1500 }
1060 1501
1061 postfork = 0; 1502 postfork = 0;
1062} 1503}
1063 1504
1064#if EV_MULTIPLICITY 1505#if EV_MULTIPLICITY
1506
1065struct ev_loop * 1507struct ev_loop *
1066ev_loop_new (unsigned int flags) 1508ev_loop_new (unsigned int flags)
1067{ 1509{
1068 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1510 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1069 1511
… …
1085} 1527}
1086 1528
1087void 1529void
1088ev_loop_fork (EV_P) 1530ev_loop_fork (EV_P)
1089{ 1531{
1090 postfork = 1; 1532 postfork = 1; /* must be in line with ev_default_fork */
1091} 1533}
1092 1534
1535#if EV_VERIFY
1536static void noinline
1537verify_watcher (EV_P_ W w)
1538{
1539 assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1540
1541 if (w->pending)
1542 assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1543}
1544
1545static void noinline
1546verify_heap (EV_P_ ANHE *heap, int N)
1547{
1548 int i;
1549
1550 for (i = HEAP0; i < N + HEAP0; ++i)
1551 {
1552 assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1553 assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1554 assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1555
1556 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1557 }
1558}
1559
1560static void noinline
1561array_verify (EV_P_ W *ws, int cnt)
1562{
1563 while (cnt--)
1564 {
1565 assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1566 verify_watcher (EV_A_ ws [cnt]);
1567 }
1568}
1569#endif
1570
1571void
1572ev_loop_verify (EV_P)
1573{
1574#if EV_VERIFY
1575 int i;
1576 WL w;
1577
1578 assert (activecnt >= -1);
1579
1580 assert (fdchangemax >= fdchangecnt);
1581 for (i = 0; i < fdchangecnt; ++i)
1582 assert (("negative fd in fdchanges", fdchanges [i] >= 0));
1583
1584 assert (anfdmax >= 0);
1585 for (i = 0; i < anfdmax; ++i)
1586 for (w = anfds [i].head; w; w = w->next)
1587 {
1588 verify_watcher (EV_A_ (W)w);
1589 assert (("inactive fd watcher on anfd list", ev_active (w) == 1));
1590 assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1591 }
1592
1593 assert (timermax >= timercnt);
1594 verify_heap (EV_A_ timers, timercnt);
1595
1596#if EV_PERIODIC_ENABLE
1597 assert (periodicmax >= periodiccnt);
1598 verify_heap (EV_A_ periodics, periodiccnt);
1599#endif
1600
1601 for (i = NUMPRI; i--; )
1602 {
1603 assert (pendingmax [i] >= pendingcnt [i]);
1604#if EV_IDLE_ENABLE
1605 assert (idleall >= 0);
1606 assert (idlemax [i] >= idlecnt [i]);
1607 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1608#endif
1609 }
1610
1611#if EV_FORK_ENABLE
1612 assert (forkmax >= forkcnt);
1613 array_verify (EV_A_ (W *)forks, forkcnt);
1614#endif
1615
1616#if EV_ASYNC_ENABLE
1617 assert (asyncmax >= asynccnt);
1618 array_verify (EV_A_ (W *)asyncs, asynccnt);
1619#endif
1620
1621 assert (preparemax >= preparecnt);
1622 array_verify (EV_A_ (W *)prepares, preparecnt);
1623
1624 assert (checkmax >= checkcnt);
1625 array_verify (EV_A_ (W *)checks, checkcnt);
1626
1627# if 0
1628 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1629 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1093#endif 1630# endif
1631#endif
1632}
1633
1634#endif /* multiplicity */
1094 1635
1095#if EV_MULTIPLICITY 1636#if EV_MULTIPLICITY
1096struct ev_loop * 1637struct ev_loop *
1097ev_default_loop_init (unsigned int flags) 1638ev_default_loop_init (unsigned int flags)
1098#else 1639#else
1099int 1640int
1100ev_default_loop (unsigned int flags) 1641ev_default_loop (unsigned int flags)
1101#endif 1642#endif
1102{ 1643{
1103 if (sigpipe [0] == sigpipe [1])
1104 if (pipe (sigpipe))
1105 return 0;
1106
1107 if (!ev_default_loop_ptr) 1644 if (!ev_default_loop_ptr)
1108 { 1645 {
1109#if EV_MULTIPLICITY 1646#if EV_MULTIPLICITY
1110 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1647 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1111#else 1648#else
… …
1114 1651
1115 loop_init (EV_A_ flags); 1652 loop_init (EV_A_ flags);
1116 1653
1117 if (ev_backend (EV_A)) 1654 if (ev_backend (EV_A))
1118 { 1655 {
1119 siginit (EV_A);
1120
1121#ifndef _WIN32 1656#ifndef _WIN32
1122 ev_signal_init (&childev, childcb, SIGCHLD); 1657 ev_signal_init (&childev, childcb, SIGCHLD);
1123 ev_set_priority (&childev, EV_MAXPRI); 1658 ev_set_priority (&childev, EV_MAXPRI);
1124 ev_signal_start (EV_A_ &childev); 1659 ev_signal_start (EV_A_ &childev);
1125 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1660 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1137{ 1672{
1138#if EV_MULTIPLICITY 1673#if EV_MULTIPLICITY
1139 struct ev_loop *loop = ev_default_loop_ptr; 1674 struct ev_loop *loop = ev_default_loop_ptr;
1140#endif 1675#endif
1141 1676
1677 ev_default_loop_ptr = 0;
1678
1142#ifndef _WIN32 1679#ifndef _WIN32
1143 ev_ref (EV_A); /* child watcher */ 1680 ev_ref (EV_A); /* child watcher */
1144 ev_signal_stop (EV_A_ &childev); 1681 ev_signal_stop (EV_A_ &childev);
1145#endif 1682#endif
1146 1683
1147 ev_ref (EV_A); /* signal watcher */
1148 ev_io_stop (EV_A_ &sigev);
1149
1150 close (sigpipe [0]); sigpipe [0] = 0;
1151 close (sigpipe [1]); sigpipe [1] = 0;
1152
1153 loop_destroy (EV_A); 1684 loop_destroy (EV_A);
1154} 1685}
1155 1686
1156void 1687void
1157ev_default_fork (void) 1688ev_default_fork (void)
1158{ 1689{
1159#if EV_MULTIPLICITY 1690#if EV_MULTIPLICITY
1160 struct ev_loop *loop = ev_default_loop_ptr; 1691 struct ev_loop *loop = ev_default_loop_ptr;
1161#endif 1692#endif
1162 1693
1163 if (backend) 1694 postfork = 1; /* must be in line with ev_loop_fork */
1164 postfork = 1;
1165} 1695}
1166 1696
1167/*****************************************************************************/ 1697/*****************************************************************************/
1168 1698
1169void 1699void
… …
1186 { 1716 {
1187 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1717 /*assert (("non-pending watcher on pending list", p->w->pending));*/
1188 1718
1189 p->w->pending = 0; 1719 p->w->pending = 0;
1190 EV_CB_INVOKE (p->w, p->events); 1720 EV_CB_INVOKE (p->w, p->events);
1721 EV_FREQUENT_CHECK;
1191 } 1722 }
1192 } 1723 }
1193} 1724}
1194
1195void inline_size
1196timers_reify (EV_P)
1197{
1198 while (timercnt && ((WT)timers [0])->at <= mn_now)
1199 {
1200 ev_timer *w = timers [0];
1201
1202 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1203
1204 /* first reschedule or stop timer */
1205 if (w->repeat)
1206 {
1207 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1208
1209 ((WT)w)->at += w->repeat;
1210 if (((WT)w)->at < mn_now)
1211 ((WT)w)->at = mn_now;
1212
1213 downheap ((WT *)timers, timercnt, 0);
1214 }
1215 else
1216 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1217
1218 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1219 }
1220}
1221
1222#if EV_PERIODIC_ENABLE
1223void inline_size
1224periodics_reify (EV_P)
1225{
1226 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1227 {
1228 ev_periodic *w = periodics [0];
1229
1230 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1231
1232 /* first reschedule or stop timer */
1233 if (w->reschedule_cb)
1234 {
1235 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1236 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1237 downheap ((WT *)periodics, periodiccnt, 0);
1238 }
1239 else if (w->interval)
1240 {
1241 ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
1242 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1243 downheap ((WT *)periodics, periodiccnt, 0);
1244 }
1245 else
1246 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1247
1248 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1249 }
1250}
1251
1252static void noinline
1253periodics_reschedule (EV_P)
1254{
1255 int i;
1256
1257 /* adjust periodics after time jump */
1258 for (i = 0; i < periodiccnt; ++i)
1259 {
1260 ev_periodic *w = periodics [i];
1261
1262 if (w->reschedule_cb)
1263 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1264 else if (w->interval)
1265 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1266 }
1267
1268 /* now rebuild the heap */
1269 for (i = periodiccnt >> 1; i--; )
1270 downheap ((WT *)periodics, periodiccnt, i);
1271}
1272#endif
1273 1725
1274#if EV_IDLE_ENABLE 1726#if EV_IDLE_ENABLE
1275void inline_size 1727void inline_size
1276idle_reify (EV_P) 1728idle_reify (EV_P)
1277{ 1729{
… …
1292 } 1744 }
1293 } 1745 }
1294} 1746}
1295#endif 1747#endif
1296 1748
1297int inline_size 1749void inline_size
1298time_update_monotonic (EV_P) 1750timers_reify (EV_P)
1299{ 1751{
1752 EV_FREQUENT_CHECK;
1753
1754 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1755 {
1756 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1757
1758 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1759
1760 /* first reschedule or stop timer */
1761 if (w->repeat)
1762 {
1763 ev_at (w) += w->repeat;
1764 if (ev_at (w) < mn_now)
1765 ev_at (w) = mn_now;
1766
1767 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1768
1769 ANHE_at_cache (timers [HEAP0]);
1770 downheap (timers, timercnt, HEAP0);
1771 }
1772 else
1773 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1774
1775 EV_FREQUENT_CHECK;
1776 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1777 }
1778}
1779
1780#if EV_PERIODIC_ENABLE
1781void inline_size
1782periodics_reify (EV_P)
1783{
1784 EV_FREQUENT_CHECK;
1785
1786 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1787 {
1788 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1789
1790 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1791
1792 /* first reschedule or stop timer */
1793 if (w->reschedule_cb)
1794 {
1795 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1796
1797 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1798
1799 ANHE_at_cache (periodics [HEAP0]);
1800 downheap (periodics, periodiccnt, HEAP0);
1801 }
1802 else if (w->interval)
1803 {
1804 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1805 /* if next trigger time is not sufficiently in the future, put it there */
1806 /* this might happen because of floating point inexactness */
1807 if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1808 {
1809 ev_at (w) += w->interval;
1810
1811 /* if interval is unreasonably low we might still have a time in the past */
1812 /* so correct this. this will make the periodic very inexact, but the user */
1813 /* has effectively asked to get triggered more often than possible */
1814 if (ev_at (w) < ev_rt_now)
1815 ev_at (w) = ev_rt_now;
1816 }
1817
1818 ANHE_at_cache (periodics [HEAP0]);
1819 downheap (periodics, periodiccnt, HEAP0);
1820 }
1821 else
1822 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1823
1824 EV_FREQUENT_CHECK;
1825 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1826 }
1827}
1828
1829static void noinline
1830periodics_reschedule (EV_P)
1831{
1832 int i;
1833
1834 /* adjust periodics after time jump */
1835 for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1836 {
1837 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1838
1839 if (w->reschedule_cb)
1840 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1841 else if (w->interval)
1842 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1843
1844 ANHE_at_cache (periodics [i]);
1845 }
1846
1847 reheap (periodics, periodiccnt);
1848}
1849#endif
1850
1851void inline_speed
1852time_update (EV_P_ ev_tstamp max_block)
1853{
1854 int i;
1855
1856#if EV_USE_MONOTONIC
1857 if (expect_true (have_monotonic))
1858 {
1859 ev_tstamp odiff = rtmn_diff;
1860
1300 mn_now = get_clock (); 1861 mn_now = get_clock ();
1301 1862
1863 /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
1864 /* interpolate in the meantime */
1302 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1865 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1303 { 1866 {
1304 ev_rt_now = rtmn_diff + mn_now; 1867 ev_rt_now = rtmn_diff + mn_now;
1305 return 0; 1868 return;
1306 } 1869 }
1307 else 1870
1308 {
1309 now_floor = mn_now; 1871 now_floor = mn_now;
1310 ev_rt_now = ev_time (); 1872 ev_rt_now = ev_time ();
1311 return 1;
1312 }
1313}
1314 1873
1315void inline_size 1874 /* loop a few times, before making important decisions.
1316time_update (EV_P) 1875 * on the choice of "4": one iteration isn't enough,
1317{ 1876 * in case we get preempted during the calls to
1318 int i; 1877 * ev_time and get_clock. a second call is almost guaranteed
1319 1878 * to succeed in that case, though. and looping a few more times
1320#if EV_USE_MONOTONIC 1879 * doesn't hurt either as we only do this on time-jumps or
1321 if (expect_true (have_monotonic)) 1880 * in the unlikely event of having been preempted here.
1322 { 1881 */
1323 if (time_update_monotonic (EV_A)) 1882 for (i = 4; --i; )
1324 { 1883 {
1325 ev_tstamp odiff = rtmn_diff;
1326
1327 /* loop a few times, before making important decisions.
1328 * on the choice of "4": one iteration isn't enough,
1329 * in case we get preempted during the calls to
1330 * ev_time and get_clock. a second call is almost guaranteed
1331 * to succeed in that case, though. and looping a few more times
1332 * doesn't hurt either as we only do this on time-jumps or
1333 * in the unlikely event of having been preempted here.
1334 */
1335 for (i = 4; --i; )
1336 {
1337 rtmn_diff = ev_rt_now - mn_now; 1884 rtmn_diff = ev_rt_now - mn_now;
1338 1885
1339 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1886 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1340 return; /* all is well */ 1887 return; /* all is well */
1341 1888
1342 ev_rt_now = ev_time (); 1889 ev_rt_now = ev_time ();
1343 mn_now = get_clock (); 1890 mn_now = get_clock ();
1344 now_floor = mn_now; 1891 now_floor = mn_now;
1345 } 1892 }
1346 1893
1347# if EV_PERIODIC_ENABLE 1894# if EV_PERIODIC_ENABLE
1348 periodics_reschedule (EV_A); 1895 periodics_reschedule (EV_A);
1349# endif 1896# endif
1350 /* no timer adjustment, as the monotonic clock doesn't jump */ 1897 /* no timer adjustment, as the monotonic clock doesn't jump */
1351 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1898 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1352 }
1353 } 1899 }
1354 else 1900 else
1355#endif 1901#endif
1356 { 1902 {
1357 ev_rt_now = ev_time (); 1903 ev_rt_now = ev_time ();
1358 1904
1359 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1905 if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1360 { 1906 {
1361#if EV_PERIODIC_ENABLE 1907#if EV_PERIODIC_ENABLE
1362 periodics_reschedule (EV_A); 1908 periodics_reschedule (EV_A);
1363#endif 1909#endif
1364
1365 /* adjust timers. this is easy, as the offset is the same for all of them */ 1910 /* adjust timers. this is easy, as the offset is the same for all of them */
1366 for (i = 0; i < timercnt; ++i) 1911 for (i = 0; i < timercnt; ++i)
1912 {
1913 ANHE *he = timers + i + HEAP0;
1367 ((WT)timers [i])->at += ev_rt_now - mn_now; 1914 ANHE_w (*he)->at += ev_rt_now - mn_now;
1915 ANHE_at_cache (*he);
1916 }
1368 } 1917 }
1369 1918
1370 mn_now = ev_rt_now; 1919 mn_now = ev_rt_now;
1371 } 1920 }
1372} 1921}
… …
1381ev_unref (EV_P) 1930ev_unref (EV_P)
1382{ 1931{
1383 --activecnt; 1932 --activecnt;
1384} 1933}
1385 1934
1935void
1936ev_now_update (EV_P)
1937{
1938 time_update (EV_A_ 1e100);
1939}
1940
1386static int loop_done; 1941static int loop_done;
1387 1942
1388void 1943void
1389ev_loop (EV_P_ int flags) 1944ev_loop (EV_P_ int flags)
1390{ 1945{
1391 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 1946 loop_done = EVUNLOOP_CANCEL;
1392 ? EVUNLOOP_ONE
1393 : EVUNLOOP_CANCEL;
1394 1947
1395 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 1948 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1396 1949
1397 do 1950 do
1398 { 1951 {
1952#if EV_VERIFY >= 2
1953 ev_loop_verify (EV_A);
1954#endif
1955
1399#ifndef _WIN32 1956#ifndef _WIN32
1400 if (expect_false (curpid)) /* penalise the forking check even more */ 1957 if (expect_false (curpid)) /* penalise the forking check even more */
1401 if (expect_false (getpid () != curpid)) 1958 if (expect_false (getpid () != curpid))
1402 { 1959 {
1403 curpid = getpid (); 1960 curpid = getpid ();
… …
1413 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); 1970 queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1414 call_pending (EV_A); 1971 call_pending (EV_A);
1415 } 1972 }
1416#endif 1973#endif
1417 1974
1418 /* queue check watchers (and execute them) */ 1975 /* queue prepare watchers (and execute them) */
1419 if (expect_false (preparecnt)) 1976 if (expect_false (preparecnt))
1420 { 1977 {
1421 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); 1978 queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1422 call_pending (EV_A); 1979 call_pending (EV_A);
1423 } 1980 }
… …
1432 /* update fd-related kernel structures */ 1989 /* update fd-related kernel structures */
1433 fd_reify (EV_A); 1990 fd_reify (EV_A);
1434 1991
1435 /* calculate blocking time */ 1992 /* calculate blocking time */
1436 { 1993 {
1437 ev_tstamp block; 1994 ev_tstamp waittime = 0.;
1995 ev_tstamp sleeptime = 0.;
1438 1996
1439 if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt)) 1997 if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1440 block = 0.; /* do not block at all */
1441 else
1442 { 1998 {
1443 /* update time to cancel out callback processing overhead */ 1999 /* update time to cancel out callback processing overhead */
1444#if EV_USE_MONOTONIC
1445 if (expect_true (have_monotonic))
1446 time_update_monotonic (EV_A); 2000 time_update (EV_A_ 1e100);
1447 else
1448#endif
1449 {
1450 ev_rt_now = ev_time ();
1451 mn_now = ev_rt_now;
1452 }
1453 2001
1454 block = MAX_BLOCKTIME; 2002 waittime = MAX_BLOCKTIME;
1455 2003
1456 if (timercnt) 2004 if (timercnt)
1457 { 2005 {
1458 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 2006 ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1459 if (block > to) block = to; 2007 if (waittime > to) waittime = to;
1460 } 2008 }
1461 2009
1462#if EV_PERIODIC_ENABLE 2010#if EV_PERIODIC_ENABLE
1463 if (periodiccnt) 2011 if (periodiccnt)
1464 { 2012 {
1465 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 2013 ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1466 if (block > to) block = to; 2014 if (waittime > to) waittime = to;
1467 } 2015 }
1468#endif 2016#endif
1469 2017
1470 if (expect_false (block < 0.)) block = 0.; 2018 if (expect_false (waittime < timeout_blocktime))
2019 waittime = timeout_blocktime;
2020
2021 sleeptime = waittime - backend_fudge;
2022
2023 if (expect_true (sleeptime > io_blocktime))
2024 sleeptime = io_blocktime;
2025
2026 if (sleeptime)
2027 {
2028 ev_sleep (sleeptime);
2029 waittime -= sleeptime;
2030 }
1471 } 2031 }
1472 2032
1473 ++loop_count; 2033 ++loop_count;
1474 backend_poll (EV_A_ block); 2034 backend_poll (EV_A_ waittime);
2035
2036 /* update ev_rt_now, do magic */
2037 time_update (EV_A_ waittime + sleeptime);
1475 } 2038 }
1476
1477 /* update ev_rt_now, do magic */
1478 time_update (EV_A);
1479 2039
1480 /* queue pending timers and reschedule them */ 2040 /* queue pending timers and reschedule them */
1481 timers_reify (EV_A); /* relative timers called last */ 2041 timers_reify (EV_A); /* relative timers called last */
1482#if EV_PERIODIC_ENABLE 2042#if EV_PERIODIC_ENABLE
1483 periodics_reify (EV_A); /* absolute timers called first */ 2043 periodics_reify (EV_A); /* absolute timers called first */
… …
1491 /* queue check watchers, to be executed first */ 2051 /* queue check watchers, to be executed first */
1492 if (expect_false (checkcnt)) 2052 if (expect_false (checkcnt))
1493 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 2053 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1494 2054
1495 call_pending (EV_A); 2055 call_pending (EV_A);
1496
1497 } 2056 }
1498 while (expect_true (activecnt && !loop_done)); 2057 while (expect_true (
2058 activecnt
2059 && !loop_done
2060 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2061 ));
1499 2062
1500 if (loop_done == EVUNLOOP_ONE) 2063 if (loop_done == EVUNLOOP_ONE)
1501 loop_done = EVUNLOOP_CANCEL; 2064 loop_done = EVUNLOOP_CANCEL;
1502} 2065}
1503 2066
… …
1545ev_clear_pending (EV_P_ void *w) 2108ev_clear_pending (EV_P_ void *w)
1546{ 2109{
1547 W w_ = (W)w; 2110 W w_ = (W)w;
1548 int pending = w_->pending; 2111 int pending = w_->pending;
1549 2112
1550 if (!pending) 2113 if (expect_true (pending))
2114 {
2115 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
2116 w_->pending = 0;
2117 p->w = 0;
2118 return p->events;
2119 }
2120 else
1551 return 0; 2121 return 0;
1552
1553 w_->pending = 0;
1554 ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1555 p->w = 0;
1556
1557 return p->events;
1558} 2122}
1559 2123
1560void inline_size 2124void inline_size
1561pri_adjust (EV_P_ W w) 2125pri_adjust (EV_P_ W w)
1562{ 2126{
… …
1581 w->active = 0; 2145 w->active = 0;
1582} 2146}
1583 2147
1584/*****************************************************************************/ 2148/*****************************************************************************/
1585 2149
1586void 2150void noinline
1587ev_io_start (EV_P_ ev_io *w) 2151ev_io_start (EV_P_ ev_io *w)
1588{ 2152{
1589 int fd = w->fd; 2153 int fd = w->fd;
1590 2154
1591 if (expect_false (ev_is_active (w))) 2155 if (expect_false (ev_is_active (w)))
1592 return; 2156 return;
1593 2157
1594 assert (("ev_io_start called with negative fd", fd >= 0)); 2158 assert (("ev_io_start called with negative fd", fd >= 0));
2159 assert (("ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE))));
2160
2161 EV_FREQUENT_CHECK;
1595 2162
1596 ev_start (EV_A_ (W)w, 1); 2163 ev_start (EV_A_ (W)w, 1);
1597 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2164 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1598 wlist_add ((WL *)&anfds[fd].head, (WL)w); 2165 wlist_add (&anfds[fd].head, (WL)w);
1599 2166
1600 fd_change (EV_A_ fd); 2167 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1601} 2168 w->events &= ~EV_IOFDSET;
1602 2169
1603void 2170 EV_FREQUENT_CHECK;
2171}
2172
2173void noinline
1604ev_io_stop (EV_P_ ev_io *w) 2174ev_io_stop (EV_P_ ev_io *w)
1605{ 2175{
1606 clear_pending (EV_A_ (W)w); 2176 clear_pending (EV_A_ (W)w);
1607 if (expect_false (!ev_is_active (w))) 2177 if (expect_false (!ev_is_active (w)))
1608 return; 2178 return;
1609 2179
1610 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2180 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1611 2181
2182 EV_FREQUENT_CHECK;
2183
1612 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 2184 wlist_del (&anfds[w->fd].head, (WL)w);
1613 ev_stop (EV_A_ (W)w); 2185 ev_stop (EV_A_ (W)w);
1614 2186
1615 fd_change (EV_A_ w->fd); 2187 fd_change (EV_A_ w->fd, 1);
1616}
1617 2188
1618void 2189 EV_FREQUENT_CHECK;
2190}
2191
2192void noinline
1619ev_timer_start (EV_P_ ev_timer *w) 2193ev_timer_start (EV_P_ ev_timer *w)
1620{ 2194{
1621 if (expect_false (ev_is_active (w))) 2195 if (expect_false (ev_is_active (w)))
1622 return; 2196 return;
1623 2197
1624 ((WT)w)->at += mn_now; 2198 ev_at (w) += mn_now;
1625 2199
1626 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2200 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1627 2201
2202 EV_FREQUENT_CHECK;
2203
2204 ++timercnt;
1628 ev_start (EV_A_ (W)w, ++timercnt); 2205 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1629 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); 2206 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1630 timers [timercnt - 1] = w; 2207 ANHE_w (timers [ev_active (w)]) = (WT)w;
1631 upheap ((WT *)timers, timercnt - 1); 2208 ANHE_at_cache (timers [ev_active (w)]);
2209 upheap (timers, ev_active (w));
1632 2210
2211 EV_FREQUENT_CHECK;
2212
1633 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 2213 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1634} 2214}
1635 2215
1636void 2216void noinline
1637ev_timer_stop (EV_P_ ev_timer *w) 2217ev_timer_stop (EV_P_ ev_timer *w)
1638{ 2218{
1639 clear_pending (EV_A_ (W)w); 2219 clear_pending (EV_A_ (W)w);
1640 if (expect_false (!ev_is_active (w))) 2220 if (expect_false (!ev_is_active (w)))
1641 return; 2221 return;
1642 2222
1643 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 2223 EV_FREQUENT_CHECK;
1644 2224
1645 { 2225 {
1646 int active = ((W)w)->active; 2226 int active = ev_active (w);
1647 2227
2228 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2229
2230 --timercnt;
2231
1648 if (expect_true (--active < --timercnt)) 2232 if (expect_true (active < timercnt + HEAP0))
1649 { 2233 {
1650 timers [active] = timers [timercnt]; 2234 timers [active] = timers [timercnt + HEAP0];
1651 adjustheap ((WT *)timers, timercnt, active); 2235 adjustheap (timers, timercnt, active);
1652 } 2236 }
1653 } 2237 }
1654 2238
1655 ((WT)w)->at -= mn_now; 2239 EV_FREQUENT_CHECK;
2240
2241 ev_at (w) -= mn_now;
1656 2242
1657 ev_stop (EV_A_ (W)w); 2243 ev_stop (EV_A_ (W)w);
1658} 2244}
1659 2245
1660void 2246void noinline
1661ev_timer_again (EV_P_ ev_timer *w) 2247ev_timer_again (EV_P_ ev_timer *w)
1662{ 2248{
2249 EV_FREQUENT_CHECK;
2250
1663 if (ev_is_active (w)) 2251 if (ev_is_active (w))
1664 { 2252 {
1665 if (w->repeat) 2253 if (w->repeat)
1666 { 2254 {
1667 ((WT)w)->at = mn_now + w->repeat; 2255 ev_at (w) = mn_now + w->repeat;
2256 ANHE_at_cache (timers [ev_active (w)]);
1668 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 2257 adjustheap (timers, timercnt, ev_active (w));
1669 } 2258 }
1670 else 2259 else
1671 ev_timer_stop (EV_A_ w); 2260 ev_timer_stop (EV_A_ w);
1672 } 2261 }
1673 else if (w->repeat) 2262 else if (w->repeat)
1674 { 2263 {
1675 w->at = w->repeat; 2264 ev_at (w) = w->repeat;
1676 ev_timer_start (EV_A_ w); 2265 ev_timer_start (EV_A_ w);
1677 } 2266 }
2267
2268 EV_FREQUENT_CHECK;
1678} 2269}
1679 2270
1680#if EV_PERIODIC_ENABLE 2271#if EV_PERIODIC_ENABLE
1681void 2272void noinline
1682ev_periodic_start (EV_P_ ev_periodic *w) 2273ev_periodic_start (EV_P_ ev_periodic *w)
1683{ 2274{
1684 if (expect_false (ev_is_active (w))) 2275 if (expect_false (ev_is_active (w)))
1685 return; 2276 return;
1686 2277
1687 if (w->reschedule_cb) 2278 if (w->reschedule_cb)
1688 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2279 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1689 else if (w->interval) 2280 else if (w->interval)
1690 { 2281 {
1691 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2282 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1692 /* this formula differs from the one in periodic_reify because we do not always round up */ 2283 /* this formula differs from the one in periodic_reify because we do not always round up */
1693 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 2284 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1694 } 2285 }
2286 else
2287 ev_at (w) = w->offset;
1695 2288
2289 EV_FREQUENT_CHECK;
2290
2291 ++periodiccnt;
1696 ev_start (EV_A_ (W)w, ++periodiccnt); 2292 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1697 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 2293 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1698 periodics [periodiccnt - 1] = w; 2294 ANHE_w (periodics [ev_active (w)]) = (WT)w;
1699 upheap ((WT *)periodics, periodiccnt - 1); 2295 ANHE_at_cache (periodics [ev_active (w)]);
2296 upheap (periodics, ev_active (w));
1700 2297
2298 EV_FREQUENT_CHECK;
2299
1701 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2300 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1702} 2301}
1703 2302
1704void 2303void noinline
1705ev_periodic_stop (EV_P_ ev_periodic *w) 2304ev_periodic_stop (EV_P_ ev_periodic *w)
1706{ 2305{
1707 clear_pending (EV_A_ (W)w); 2306 clear_pending (EV_A_ (W)w);
1708 if (expect_false (!ev_is_active (w))) 2307 if (expect_false (!ev_is_active (w)))
1709 return; 2308 return;
1710 2309
1711 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 2310 EV_FREQUENT_CHECK;
1712 2311
1713 { 2312 {
1714 int active = ((W)w)->active; 2313 int active = ev_active (w);
1715 2314
2315 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2316
2317 --periodiccnt;
2318
1716 if (expect_true (--active < --periodiccnt)) 2319 if (expect_true (active < periodiccnt + HEAP0))
1717 { 2320 {
1718 periodics [active] = periodics [periodiccnt]; 2321 periodics [active] = periodics [periodiccnt + HEAP0];
1719 adjustheap ((WT *)periodics, periodiccnt, active); 2322 adjustheap (periodics, periodiccnt, active);
1720 } 2323 }
1721 } 2324 }
1722 2325
2326 EV_FREQUENT_CHECK;
2327
1723 ev_stop (EV_A_ (W)w); 2328 ev_stop (EV_A_ (W)w);
1724} 2329}
1725 2330
1726void 2331void noinline
1727ev_periodic_again (EV_P_ ev_periodic *w) 2332ev_periodic_again (EV_P_ ev_periodic *w)
1728{ 2333{
1729 /* TODO: use adjustheap and recalculation */ 2334 /* TODO: use adjustheap and recalculation */
1730 ev_periodic_stop (EV_A_ w); 2335 ev_periodic_stop (EV_A_ w);
1731 ev_periodic_start (EV_A_ w); 2336 ev_periodic_start (EV_A_ w);
… …
1734 2339
1735#ifndef SA_RESTART 2340#ifndef SA_RESTART
1736# define SA_RESTART 0 2341# define SA_RESTART 0
1737#endif 2342#endif
1738 2343
1739void 2344void noinline
1740ev_signal_start (EV_P_ ev_signal *w) 2345ev_signal_start (EV_P_ ev_signal *w)
1741{ 2346{
1742#if EV_MULTIPLICITY 2347#if EV_MULTIPLICITY
1743 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2348 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1744#endif 2349#endif
1745 if (expect_false (ev_is_active (w))) 2350 if (expect_false (ev_is_active (w)))
1746 return; 2351 return;
1747 2352
1748 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2353 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1749 2354
2355 evpipe_init (EV_A);
2356
2357 EV_FREQUENT_CHECK;
2358
2359 {
2360#ifndef _WIN32
2361 sigset_t full, prev;
2362 sigfillset (&full);
2363 sigprocmask (SIG_SETMASK, &full, &prev);
2364#endif
2365
2366 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2367
2368#ifndef _WIN32
2369 sigprocmask (SIG_SETMASK, &prev, 0);
2370#endif
2371 }
2372
1750 ev_start (EV_A_ (W)w, 1); 2373 ev_start (EV_A_ (W)w, 1);
1751 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1752 wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); 2374 wlist_add (&signals [w->signum - 1].head, (WL)w);
1753 2375
1754 if (!((WL)w)->next) 2376 if (!((WL)w)->next)
1755 { 2377 {
1756#if _WIN32 2378#if _WIN32
1757 signal (w->signum, sighandler); 2379 signal (w->signum, ev_sighandler);
1758#else 2380#else
1759 struct sigaction sa; 2381 struct sigaction sa;
1760 sa.sa_handler = sighandler; 2382 sa.sa_handler = ev_sighandler;
1761 sigfillset (&sa.sa_mask); 2383 sigfillset (&sa.sa_mask);
1762 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2384 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1763 sigaction (w->signum, &sa, 0); 2385 sigaction (w->signum, &sa, 0);
1764#endif 2386#endif
1765 } 2387 }
1766}
1767 2388
1768void 2389 EV_FREQUENT_CHECK;
2390}
2391
2392void noinline
1769ev_signal_stop (EV_P_ ev_signal *w) 2393ev_signal_stop (EV_P_ ev_signal *w)
1770{ 2394{
1771 clear_pending (EV_A_ (W)w); 2395 clear_pending (EV_A_ (W)w);
1772 if (expect_false (!ev_is_active (w))) 2396 if (expect_false (!ev_is_active (w)))
1773 return; 2397 return;
1774 2398
2399 EV_FREQUENT_CHECK;
2400
1775 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 2401 wlist_del (&signals [w->signum - 1].head, (WL)w);
1776 ev_stop (EV_A_ (W)w); 2402 ev_stop (EV_A_ (W)w);
1777 2403
1778 if (!signals [w->signum - 1].head) 2404 if (!signals [w->signum - 1].head)
1779 signal (w->signum, SIG_DFL); 2405 signal (w->signum, SIG_DFL);
2406
2407 EV_FREQUENT_CHECK;
1780} 2408}
1781 2409
1782void 2410void
1783ev_child_start (EV_P_ ev_child *w) 2411ev_child_start (EV_P_ ev_child *w)
1784{ 2412{
… …
1786 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2414 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1787#endif 2415#endif
1788 if (expect_false (ev_is_active (w))) 2416 if (expect_false (ev_is_active (w)))
1789 return; 2417 return;
1790 2418
2419 EV_FREQUENT_CHECK;
2420
1791 ev_start (EV_A_ (W)w, 1); 2421 ev_start (EV_A_ (W)w, 1);
1792 wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2422 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2423
2424 EV_FREQUENT_CHECK;
1793} 2425}
1794 2426
1795void 2427void
1796ev_child_stop (EV_P_ ev_child *w) 2428ev_child_stop (EV_P_ ev_child *w)
1797{ 2429{
1798 clear_pending (EV_A_ (W)w); 2430 clear_pending (EV_A_ (W)w);
1799 if (expect_false (!ev_is_active (w))) 2431 if (expect_false (!ev_is_active (w)))
1800 return; 2432 return;
1801 2433
2434 EV_FREQUENT_CHECK;
2435
1802 wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2436 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1803 ev_stop (EV_A_ (W)w); 2437 ev_stop (EV_A_ (W)w);
2438
2439 EV_FREQUENT_CHECK;
1804} 2440}
1805 2441
1806#if EV_STAT_ENABLE 2442#if EV_STAT_ENABLE
1807 2443
1808# ifdef _WIN32 2444# ifdef _WIN32
1809# undef lstat 2445# undef lstat
1810# define lstat(a,b) _stati64 (a,b) 2446# define lstat(a,b) _stati64 (a,b)
1811# endif 2447# endif
1812 2448
1813#define DEF_STAT_INTERVAL 5.0074891 2449#define DEF_STAT_INTERVAL 5.0074891
2450#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1814#define MIN_STAT_INTERVAL 0.1074891 2451#define MIN_STAT_INTERVAL 0.1074891
1815 2452
1816static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2453static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1817 2454
1818#if EV_USE_INOTIFY 2455#if EV_USE_INOTIFY
1819# define EV_INOTIFY_BUFSIZE 8192 2456# define EV_INOTIFY_BUFSIZE 8192
… …
1823{ 2460{
1824 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 2461 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
1825 2462
1826 if (w->wd < 0) 2463 if (w->wd < 0)
1827 { 2464 {
2465 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1828 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2466 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1829 2467
1830 /* monitor some parent directory for speedup hints */ 2468 /* monitor some parent directory for speedup hints */
2469 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2470 /* but an efficiency issue only */
1831 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2471 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1832 { 2472 {
1833 char path [4096]; 2473 char path [4096];
1834 strcpy (path, w->path); 2474 strcpy (path, w->path);
1835 2475
… …
1838 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2478 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1839 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2479 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1840 2480
1841 char *pend = strrchr (path, '/'); 2481 char *pend = strrchr (path, '/');
1842 2482
1843 if (!pend) 2483 if (!pend || pend == path)
1844 break; /* whoops, no '/', complain to your admin */ 2484 break;
1845 2485
1846 *pend = 0; 2486 *pend = 0;
1847 w->wd = inotify_add_watch (fs_fd, path, mask); 2487 w->wd = inotify_add_watch (fs_fd, path, mask);
1848 } 2488 }
1849 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2489 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1850 } 2490 }
1851 } 2491 }
1852 else
1853 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1854 2492
1855 if (w->wd >= 0) 2493 if (w->wd >= 0)
2494 {
1856 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2495 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2496
2497 /* now local changes will be tracked by inotify, but remote changes won't */
2498 /* unless the filesystem it known to be local, we therefore still poll */
2499 /* also do poll on <2.6.25, but with normal frequency */
2500 struct statfs sfs;
2501
2502 if (fs_2625 && !statfs (w->path, &sfs))
2503 if (sfs.f_type == 0x1373 /* devfs */
2504 || sfs.f_type == 0xEF53 /* ext2/3 */
2505 || sfs.f_type == 0x3153464a /* jfs */
2506 || sfs.f_type == 0x52654973 /* reiser3 */
2507 || sfs.f_type == 0x01021994 /* tempfs */
2508 || sfs.f_type == 0x58465342 /* xfs */)
2509 return;
2510
2511 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2512 ev_timer_again (EV_A_ &w->timer);
2513 }
1857} 2514}
1858 2515
1859static void noinline 2516static void noinline
1860infy_del (EV_P_ ev_stat *w) 2517infy_del (EV_P_ ev_stat *w)
1861{ 2518{
… …
1875 2532
1876static void noinline 2533static void noinline
1877infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2534infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1878{ 2535{
1879 if (slot < 0) 2536 if (slot < 0)
1880 /* overflow, need to check for all hahs slots */ 2537 /* overflow, need to check for all hash slots */
1881 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2538 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1882 infy_wd (EV_A_ slot, wd, ev); 2539 infy_wd (EV_A_ slot, wd, ev);
1883 else 2540 else
1884 { 2541 {
1885 WL w_; 2542 WL w_;
… …
1891 2548
1892 if (w->wd == wd || wd == -1) 2549 if (w->wd == wd || wd == -1)
1893 { 2550 {
1894 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2551 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1895 { 2552 {
2553 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1896 w->wd = -1; 2554 w->wd = -1;
1897 infy_add (EV_A_ w); /* re-add, no matter what */ 2555 infy_add (EV_A_ w); /* re-add, no matter what */
1898 } 2556 }
1899 2557
1900 stat_timer_cb (EV_A_ &w->timer, 0); 2558 stat_timer_cb (EV_A_ &w->timer, 0);
… …
1914 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2572 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1915 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2573 infy_wd (EV_A_ ev->wd, ev->wd, ev);
1916} 2574}
1917 2575
1918void inline_size 2576void inline_size
2577check_2625 (EV_P)
2578{
2579 /* kernels < 2.6.25 are borked
2580 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2581 */
2582 struct utsname buf;
2583 int major, minor, micro;
2584
2585 if (uname (&buf))
2586 return;
2587
2588 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2589 return;
2590
2591 if (major < 2
2592 || (major == 2 && minor < 6)
2593 || (major == 2 && minor == 6 && micro < 25))
2594 return;
2595
2596 fs_2625 = 1;
2597}
2598
2599void inline_size
1919infy_init (EV_P) 2600infy_init (EV_P)
1920{ 2601{
1921 if (fs_fd != -2) 2602 if (fs_fd != -2)
1922 return; 2603 return;
2604
2605 fs_fd = -1;
2606
2607 check_2625 (EV_A);
1923 2608
1924 fs_fd = inotify_init (); 2609 fs_fd = inotify_init ();
1925 2610
1926 if (fs_fd >= 0) 2611 if (fs_fd >= 0)
1927 { 2612 {
… …
1955 w->wd = -1; 2640 w->wd = -1;
1956 2641
1957 if (fs_fd >= 0) 2642 if (fs_fd >= 0)
1958 infy_add (EV_A_ w); /* re-add, no matter what */ 2643 infy_add (EV_A_ w); /* re-add, no matter what */
1959 else 2644 else
1960 ev_timer_start (EV_A_ &w->timer); 2645 ev_timer_again (EV_A_ &w->timer);
1961 } 2646 }
1962
1963 } 2647 }
1964} 2648}
1965 2649
2650#endif
2651
2652#ifdef _WIN32
2653# define EV_LSTAT(p,b) _stati64 (p, b)
2654#else
2655# define EV_LSTAT(p,b) lstat (p, b)
1966#endif 2656#endif
1967 2657
1968void 2658void
1969ev_stat_stat (EV_P_ ev_stat *w) 2659ev_stat_stat (EV_P_ ev_stat *w)
1970{ 2660{
… …
1997 || w->prev.st_atime != w->attr.st_atime 2687 || w->prev.st_atime != w->attr.st_atime
1998 || w->prev.st_mtime != w->attr.st_mtime 2688 || w->prev.st_mtime != w->attr.st_mtime
1999 || w->prev.st_ctime != w->attr.st_ctime 2689 || w->prev.st_ctime != w->attr.st_ctime
2000 ) { 2690 ) {
2001 #if EV_USE_INOTIFY 2691 #if EV_USE_INOTIFY
2692 if (fs_fd >= 0)
2693 {
2002 infy_del (EV_A_ w); 2694 infy_del (EV_A_ w);
2003 infy_add (EV_A_ w); 2695 infy_add (EV_A_ w);
2004 ev_stat_stat (EV_A_ w); /* avoid race... */ 2696 ev_stat_stat (EV_A_ w); /* avoid race... */
2697 }
2005 #endif 2698 #endif
2006 2699
2007 ev_feed_event (EV_A_ w, EV_STAT); 2700 ev_feed_event (EV_A_ w, EV_STAT);
2008 } 2701 }
2009} 2702}
… …
2012ev_stat_start (EV_P_ ev_stat *w) 2705ev_stat_start (EV_P_ ev_stat *w)
2013{ 2706{
2014 if (expect_false (ev_is_active (w))) 2707 if (expect_false (ev_is_active (w)))
2015 return; 2708 return;
2016 2709
2017 /* since we use memcmp, we need to clear any padding data etc. */
2018 memset (&w->prev, 0, sizeof (ev_statdata));
2019 memset (&w->attr, 0, sizeof (ev_statdata));
2020
2021 ev_stat_stat (EV_A_ w); 2710 ev_stat_stat (EV_A_ w);
2022 2711
2712 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2023 if (w->interval < MIN_STAT_INTERVAL) 2713 w->interval = MIN_STAT_INTERVAL;
2024 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2025 2714
2026 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 2715 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2027 ev_set_priority (&w->timer, ev_priority (w)); 2716 ev_set_priority (&w->timer, ev_priority (w));
2028 2717
2029#if EV_USE_INOTIFY 2718#if EV_USE_INOTIFY
2030 infy_init (EV_A); 2719 infy_init (EV_A);
2031 2720
2032 if (fs_fd >= 0) 2721 if (fs_fd >= 0)
2033 infy_add (EV_A_ w); 2722 infy_add (EV_A_ w);
2034 else 2723 else
2035#endif 2724#endif
2036 ev_timer_start (EV_A_ &w->timer); 2725 ev_timer_again (EV_A_ &w->timer);
2037 2726
2038 ev_start (EV_A_ (W)w, 1); 2727 ev_start (EV_A_ (W)w, 1);
2728
2729 EV_FREQUENT_CHECK;
2039} 2730}
2040 2731
2041void 2732void
2042ev_stat_stop (EV_P_ ev_stat *w) 2733ev_stat_stop (EV_P_ ev_stat *w)
2043{ 2734{
2044 clear_pending (EV_A_ (W)w); 2735 clear_pending (EV_A_ (W)w);
2045 if (expect_false (!ev_is_active (w))) 2736 if (expect_false (!ev_is_active (w)))
2046 return; 2737 return;
2047 2738
2739 EV_FREQUENT_CHECK;
2740
2048#if EV_USE_INOTIFY 2741#if EV_USE_INOTIFY
2049 infy_del (EV_A_ w); 2742 infy_del (EV_A_ w);
2050#endif 2743#endif
2051 ev_timer_stop (EV_A_ &w->timer); 2744 ev_timer_stop (EV_A_ &w->timer);
2052 2745
2053 ev_stop (EV_A_ (W)w); 2746 ev_stop (EV_A_ (W)w);
2747
2748 EV_FREQUENT_CHECK;
2054} 2749}
2055#endif 2750#endif
2056 2751
2057#if EV_IDLE_ENABLE 2752#if EV_IDLE_ENABLE
2058void 2753void
… …
2060{ 2755{
2061 if (expect_false (ev_is_active (w))) 2756 if (expect_false (ev_is_active (w)))
2062 return; 2757 return;
2063 2758
2064 pri_adjust (EV_A_ (W)w); 2759 pri_adjust (EV_A_ (W)w);
2760
2761 EV_FREQUENT_CHECK;
2065 2762
2066 { 2763 {
2067 int active = ++idlecnt [ABSPRI (w)]; 2764 int active = ++idlecnt [ABSPRI (w)];
2068 2765
2069 ++idleall; 2766 ++idleall;
2070 ev_start (EV_A_ (W)w, active); 2767 ev_start (EV_A_ (W)w, active);
2071 2768
2072 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 2769 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2073 idles [ABSPRI (w)][active - 1] = w; 2770 idles [ABSPRI (w)][active - 1] = w;
2074 } 2771 }
2772
2773 EV_FREQUENT_CHECK;
2075} 2774}
2076 2775
2077void 2776void
2078ev_idle_stop (EV_P_ ev_idle *w) 2777ev_idle_stop (EV_P_ ev_idle *w)
2079{ 2778{
2080 clear_pending (EV_A_ (W)w); 2779 clear_pending (EV_A_ (W)w);
2081 if (expect_false (!ev_is_active (w))) 2780 if (expect_false (!ev_is_active (w)))
2082 return; 2781 return;
2083 2782
2783 EV_FREQUENT_CHECK;
2784
2084 { 2785 {
2085 int active = ((W)w)->active; 2786 int active = ev_active (w);
2086 2787
2087 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 2788 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2088 ((W)idles [ABSPRI (w)][active - 1])->active = active; 2789 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2089 2790
2090 ev_stop (EV_A_ (W)w); 2791 ev_stop (EV_A_ (W)w);
2091 --idleall; 2792 --idleall;
2092 } 2793 }
2794
2795 EV_FREQUENT_CHECK;
2093} 2796}
2094#endif 2797#endif
2095 2798
2096void 2799void
2097ev_prepare_start (EV_P_ ev_prepare *w) 2800ev_prepare_start (EV_P_ ev_prepare *w)
2098{ 2801{
2099 if (expect_false (ev_is_active (w))) 2802 if (expect_false (ev_is_active (w)))
2100 return; 2803 return;
2804
2805 EV_FREQUENT_CHECK;
2101 2806
2102 ev_start (EV_A_ (W)w, ++preparecnt); 2807 ev_start (EV_A_ (W)w, ++preparecnt);
2103 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 2808 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2104 prepares [preparecnt - 1] = w; 2809 prepares [preparecnt - 1] = w;
2810
2811 EV_FREQUENT_CHECK;
2105} 2812}
2106 2813
2107void 2814void
2108ev_prepare_stop (EV_P_ ev_prepare *w) 2815ev_prepare_stop (EV_P_ ev_prepare *w)
2109{ 2816{
2110 clear_pending (EV_A_ (W)w); 2817 clear_pending (EV_A_ (W)w);
2111 if (expect_false (!ev_is_active (w))) 2818 if (expect_false (!ev_is_active (w)))
2112 return; 2819 return;
2113 2820
2821 EV_FREQUENT_CHECK;
2822
2114 { 2823 {
2115 int active = ((W)w)->active; 2824 int active = ev_active (w);
2825
2116 prepares [active - 1] = prepares [--preparecnt]; 2826 prepares [active - 1] = prepares [--preparecnt];
2117 ((W)prepares [active - 1])->active = active; 2827 ev_active (prepares [active - 1]) = active;
2118 } 2828 }
2119 2829
2120 ev_stop (EV_A_ (W)w); 2830 ev_stop (EV_A_ (W)w);
2831
2832 EV_FREQUENT_CHECK;
2121} 2833}
2122 2834
2123void 2835void
2124ev_check_start (EV_P_ ev_check *w) 2836ev_check_start (EV_P_ ev_check *w)
2125{ 2837{
2126 if (expect_false (ev_is_active (w))) 2838 if (expect_false (ev_is_active (w)))
2127 return; 2839 return;
2840
2841 EV_FREQUENT_CHECK;
2128 2842
2129 ev_start (EV_A_ (W)w, ++checkcnt); 2843 ev_start (EV_A_ (W)w, ++checkcnt);
2130 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 2844 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2131 checks [checkcnt - 1] = w; 2845 checks [checkcnt - 1] = w;
2846
2847 EV_FREQUENT_CHECK;
2132} 2848}
2133 2849
2134void 2850void
2135ev_check_stop (EV_P_ ev_check *w) 2851ev_check_stop (EV_P_ ev_check *w)
2136{ 2852{
2137 clear_pending (EV_A_ (W)w); 2853 clear_pending (EV_A_ (W)w);
2138 if (expect_false (!ev_is_active (w))) 2854 if (expect_false (!ev_is_active (w)))
2139 return; 2855 return;
2140 2856
2857 EV_FREQUENT_CHECK;
2858
2141 { 2859 {
2142 int active = ((W)w)->active; 2860 int active = ev_active (w);
2861
2143 checks [active - 1] = checks [--checkcnt]; 2862 checks [active - 1] = checks [--checkcnt];
2144 ((W)checks [active - 1])->active = active; 2863 ev_active (checks [active - 1]) = active;
2145 } 2864 }
2146 2865
2147 ev_stop (EV_A_ (W)w); 2866 ev_stop (EV_A_ (W)w);
2867
2868 EV_FREQUENT_CHECK;
2148} 2869}
2149 2870
2150#if EV_EMBED_ENABLE 2871#if EV_EMBED_ENABLE
2151void noinline 2872void noinline
2152ev_embed_sweep (EV_P_ ev_embed *w) 2873ev_embed_sweep (EV_P_ ev_embed *w)
2153{ 2874{
2154 ev_loop (w->loop, EVLOOP_NONBLOCK); 2875 ev_loop (w->other, EVLOOP_NONBLOCK);
2155} 2876}
2156 2877
2157static void 2878static void
2158embed_cb (EV_P_ ev_io *io, int revents) 2879embed_io_cb (EV_P_ ev_io *io, int revents)
2159{ 2880{
2160 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); 2881 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2161 2882
2162 if (ev_cb (w)) 2883 if (ev_cb (w))
2163 ev_feed_event (EV_A_ (W)w, EV_EMBED); 2884 ev_feed_event (EV_A_ (W)w, EV_EMBED);
2164 else 2885 else
2165 ev_embed_sweep (loop, w); 2886 ev_loop (w->other, EVLOOP_NONBLOCK);
2166} 2887}
2888
2889static void
2890embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2891{
2892 ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2893
2894 {
2895 struct ev_loop *loop = w->other;
2896
2897 while (fdchangecnt)
2898 {
2899 fd_reify (EV_A);
2900 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2901 }
2902 }
2903}
2904
2905static void
2906embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2907{
2908 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2909
2910 {
2911 struct ev_loop *loop = w->other;
2912
2913 ev_loop_fork (EV_A);
2914 }
2915}
2916
2917#if 0
2918static void
2919embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2920{
2921 ev_idle_stop (EV_A_ idle);
2922}
2923#endif
2167 2924
2168void 2925void
2169ev_embed_start (EV_P_ ev_embed *w) 2926ev_embed_start (EV_P_ ev_embed *w)
2170{ 2927{
2171 if (expect_false (ev_is_active (w))) 2928 if (expect_false (ev_is_active (w)))
2172 return; 2929 return;
2173 2930
2174 { 2931 {
2175 struct ev_loop *loop = w->loop; 2932 struct ev_loop *loop = w->other;
2176 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 2933 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2177 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); 2934 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2178 } 2935 }
2936
2937 EV_FREQUENT_CHECK;
2179 2938
2180 ev_set_priority (&w->io, ev_priority (w)); 2939 ev_set_priority (&w->io, ev_priority (w));
2181 ev_io_start (EV_A_ &w->io); 2940 ev_io_start (EV_A_ &w->io);
2182 2941
2942 ev_prepare_init (&w->prepare, embed_prepare_cb);
2943 ev_set_priority (&w->prepare, EV_MINPRI);
2944 ev_prepare_start (EV_A_ &w->prepare);
2945
2946 ev_fork_init (&w->fork, embed_fork_cb);
2947 ev_fork_start (EV_A_ &w->fork);
2948
2949 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2950
2183 ev_start (EV_A_ (W)w, 1); 2951 ev_start (EV_A_ (W)w, 1);
2952
2953 EV_FREQUENT_CHECK;
2184} 2954}
2185 2955
2186void 2956void
2187ev_embed_stop (EV_P_ ev_embed *w) 2957ev_embed_stop (EV_P_ ev_embed *w)
2188{ 2958{
2189 clear_pending (EV_A_ (W)w); 2959 clear_pending (EV_A_ (W)w);
2190 if (expect_false (!ev_is_active (w))) 2960 if (expect_false (!ev_is_active (w)))
2191 return; 2961 return;
2192 2962
2963 EV_FREQUENT_CHECK;
2964
2193 ev_io_stop (EV_A_ &w->io); 2965 ev_io_stop (EV_A_ &w->io);
2966 ev_prepare_stop (EV_A_ &w->prepare);
2967 ev_fork_stop (EV_A_ &w->fork);
2194 2968
2195 ev_stop (EV_A_ (W)w); 2969 EV_FREQUENT_CHECK;
2196} 2970}
2197#endif 2971#endif
2198 2972
2199#if EV_FORK_ENABLE 2973#if EV_FORK_ENABLE
2200void 2974void
2201ev_fork_start (EV_P_ ev_fork *w) 2975ev_fork_start (EV_P_ ev_fork *w)
2202{ 2976{
2203 if (expect_false (ev_is_active (w))) 2977 if (expect_false (ev_is_active (w)))
2204 return; 2978 return;
2979
2980 EV_FREQUENT_CHECK;
2205 2981
2206 ev_start (EV_A_ (W)w, ++forkcnt); 2982 ev_start (EV_A_ (W)w, ++forkcnt);
2207 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 2983 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2208 forks [forkcnt - 1] = w; 2984 forks [forkcnt - 1] = w;
2985
2986 EV_FREQUENT_CHECK;
2209} 2987}
2210 2988
2211void 2989void
2212ev_fork_stop (EV_P_ ev_fork *w) 2990ev_fork_stop (EV_P_ ev_fork *w)
2213{ 2991{
2214 clear_pending (EV_A_ (W)w); 2992 clear_pending (EV_A_ (W)w);
2215 if (expect_false (!ev_is_active (w))) 2993 if (expect_false (!ev_is_active (w)))
2216 return; 2994 return;
2217 2995
2996 EV_FREQUENT_CHECK;
2997
2218 { 2998 {
2219 int active = ((W)w)->active; 2999 int active = ev_active (w);
3000
2220 forks [active - 1] = forks [--forkcnt]; 3001 forks [active - 1] = forks [--forkcnt];
2221 ((W)forks [active - 1])->active = active; 3002 ev_active (forks [active - 1]) = active;
2222 } 3003 }
2223 3004
2224 ev_stop (EV_A_ (W)w); 3005 ev_stop (EV_A_ (W)w);
3006
3007 EV_FREQUENT_CHECK;
3008}
3009#endif
3010
3011#if EV_ASYNC_ENABLE
3012void
3013ev_async_start (EV_P_ ev_async *w)
3014{
3015 if (expect_false (ev_is_active (w)))
3016 return;
3017
3018 evpipe_init (EV_A);
3019
3020 EV_FREQUENT_CHECK;
3021
3022 ev_start (EV_A_ (W)w, ++asynccnt);
3023 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
3024 asyncs [asynccnt - 1] = w;
3025
3026 EV_FREQUENT_CHECK;
3027}
3028
3029void
3030ev_async_stop (EV_P_ ev_async *w)
3031{
3032 clear_pending (EV_A_ (W)w);
3033 if (expect_false (!ev_is_active (w)))
3034 return;
3035
3036 EV_FREQUENT_CHECK;
3037
3038 {
3039 int active = ev_active (w);
3040
3041 asyncs [active - 1] = asyncs [--asynccnt];
3042 ev_active (asyncs [active - 1]) = active;
3043 }
3044
3045 ev_stop (EV_A_ (W)w);
3046
3047 EV_FREQUENT_CHECK;
3048}
3049
3050void
3051ev_async_send (EV_P_ ev_async *w)
3052{
3053 w->sent = 1;
3054 evpipe_write (EV_A_ &gotasync);
2225} 3055}
2226#endif 3056#endif
2227 3057
2228/*****************************************************************************/ 3058/*****************************************************************************/
2229 3059
… …
2239once_cb (EV_P_ struct ev_once *once, int revents) 3069once_cb (EV_P_ struct ev_once *once, int revents)
2240{ 3070{
2241 void (*cb)(int revents, void *arg) = once->cb; 3071 void (*cb)(int revents, void *arg) = once->cb;
2242 void *arg = once->arg; 3072 void *arg = once->arg;
2243 3073
2244 ev_io_stop (EV_A_ &once->io); 3074 ev_io_stop (EV_A_ &once->io);
2245 ev_timer_stop (EV_A_ &once->to); 3075 ev_timer_stop (EV_A_ &once->to);
2246 ev_free (once); 3076 ev_free (once);
2247 3077
2248 cb (revents, arg); 3078 cb (revents, arg);
2249} 3079}
2250 3080
2251static void 3081static void
2252once_cb_io (EV_P_ ev_io *w, int revents) 3082once_cb_io (EV_P_ ev_io *w, int revents)
2253{ 3083{
2254 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3084 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3085
3086 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2255} 3087}
2256 3088
2257static void 3089static void
2258once_cb_to (EV_P_ ev_timer *w, int revents) 3090once_cb_to (EV_P_ ev_timer *w, int revents)
2259{ 3091{
2260 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3092 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3093
3094 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2261} 3095}
2262 3096
2263void 3097void
2264ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3098ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2265{ 3099{
… …
2287 ev_timer_set (&once->to, timeout, 0.); 3121 ev_timer_set (&once->to, timeout, 0.);
2288 ev_timer_start (EV_A_ &once->to); 3122 ev_timer_start (EV_A_ &once->to);
2289 } 3123 }
2290} 3124}
2291 3125
3126#if EV_MULTIPLICITY
3127 #include "ev_wrap.h"
3128#endif
3129
2292#ifdef __cplusplus 3130#ifdef __cplusplus
2293} 3131}
2294#endif 3132#endif
2295 3133

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