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Comparing libev/ev.c (file contents):
Revision 1.119 by root, Fri Nov 16 01:43:52 2007 UTC vs.
Revision 1.144 by root, Tue Nov 27 08:11:52 2007 UTC

32#ifdef __cplusplus 32#ifdef __cplusplus
33extern "C" { 33extern "C" {
34#endif 34#endif
35 35
36#ifndef EV_STANDALONE 36#ifndef EV_STANDALONE
37# ifdef EV_CONFIG_H
38# include EV_CONFIG_H
39# else
37# include "config.h" 40# include "config.h"
41# endif
38 42
39# if HAVE_CLOCK_GETTIME 43# if HAVE_CLOCK_GETTIME
40# ifndef EV_USE_MONOTONIC 44# ifndef EV_USE_MONOTONIC
41# define EV_USE_MONOTONIC 1 45# define EV_USE_MONOTONIC 1
42# endif 46# endif
43# ifndef EV_USE_REALTIME 47# ifndef EV_USE_REALTIME
44# define EV_USE_REALTIME 1 48# define EV_USE_REALTIME 1
45# endif 49# endif
50# else
51# ifndef EV_USE_MONOTONIC
52# define EV_USE_MONOTONIC 0
53# endif
54# ifndef EV_USE_REALTIME
55# define EV_USE_REALTIME 0
56# endif
46# endif 57# endif
47 58
48# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT) 59# ifndef EV_USE_SELECT
60# if HAVE_SELECT && HAVE_SYS_SELECT_H
49# define EV_USE_SELECT 1 61# define EV_USE_SELECT 1
62# else
63# define EV_USE_SELECT 0
64# endif
50# endif 65# endif
51 66
52# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL) 67# ifndef EV_USE_POLL
68# if HAVE_POLL && HAVE_POLL_H
53# define EV_USE_POLL 1 69# define EV_USE_POLL 1
70# else
71# define EV_USE_POLL 0
72# endif
54# endif 73# endif
55 74
56# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL) 75# ifndef EV_USE_EPOLL
76# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
57# define EV_USE_EPOLL 1 77# define EV_USE_EPOLL 1
78# else
79# define EV_USE_EPOLL 0
80# endif
58# endif 81# endif
59 82
83# ifndef EV_USE_KQUEUE
60# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE) 84# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
61# define EV_USE_KQUEUE 1 85# define EV_USE_KQUEUE 1
86# else
87# define EV_USE_KQUEUE 0
88# endif
62# endif 89# endif
63 90
64# if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT) 91# ifndef EV_USE_PORT
92# if HAVE_PORT_H && HAVE_PORT_CREATE
65# define EV_USE_PORT 1 93# define EV_USE_PORT 1
94# else
95# define EV_USE_PORT 0
96# endif
66# endif 97# endif
67 98
68#endif 99#endif
69 100
70#include <math.h> 101#include <math.h>
80#include <time.h> 111#include <time.h>
81 112
82#include <signal.h> 113#include <signal.h>
83 114
84#ifndef _WIN32 115#ifndef _WIN32
85# include <unistd.h>
86# include <sys/time.h> 116# include <sys/time.h>
87# include <sys/wait.h> 117# include <sys/wait.h>
118# include <unistd.h>
88#else 119#else
89# define WIN32_LEAN_AND_MEAN 120# define WIN32_LEAN_AND_MEAN
90# include <windows.h> 121# include <windows.h>
91# ifndef EV_SELECT_IS_WINSOCKET 122# ifndef EV_SELECT_IS_WINSOCKET
92# define EV_SELECT_IS_WINSOCKET 1 123# define EV_SELECT_IS_WINSOCKET 1
94#endif 125#endif
95 126
96/**/ 127/**/
97 128
98#ifndef EV_USE_MONOTONIC 129#ifndef EV_USE_MONOTONIC
99# define EV_USE_MONOTONIC 1 130# define EV_USE_MONOTONIC 0
100#endif 131#endif
101 132
102#ifndef EV_USE_REALTIME 133#ifndef EV_USE_REALTIME
103# define EV_USE_REALTIME 1 134# define EV_USE_REALTIME 0
104#endif 135#endif
105 136
106#ifndef EV_USE_SELECT 137#ifndef EV_USE_SELECT
107# define EV_USE_SELECT 1 138# define EV_USE_SELECT 1
108# define EV_SELECT_USE_FD_SET 1
109#endif 139#endif
110 140
111#ifndef EV_USE_POLL 141#ifndef EV_USE_POLL
112# ifdef _WIN32 142# ifdef _WIN32
113# define EV_USE_POLL 0 143# define EV_USE_POLL 0
128# define EV_USE_PORT 0 158# define EV_USE_PORT 0
129#endif 159#endif
130 160
131/**/ 161/**/
132 162
133/* darwin simply cannot be helped */
134#ifdef __APPLE__
135# undef EV_USE_POLL
136# undef EV_USE_KQUEUE
137#endif
138
139#ifndef CLOCK_MONOTONIC 163#ifndef CLOCK_MONOTONIC
140# undef EV_USE_MONOTONIC 164# undef EV_USE_MONOTONIC
141# define EV_USE_MONOTONIC 0 165# define EV_USE_MONOTONIC 0
142#endif 166#endif
143 167
151#endif 175#endif
152 176
153/**/ 177/**/
154 178
155#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ 179#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
156#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ 180#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
157#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ 181#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
158/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ 182/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
159 183
160#ifdef EV_H 184#ifdef EV_H
161# include EV_H 185# include EV_H
162#else 186#else
163# include "ev.h" 187# include "ev.h"
164#endif 188#endif
165 189
166#if __GNUC__ >= 3 190#if __GNUC__ >= 3
167# define expect(expr,value) __builtin_expect ((expr),(value)) 191# define expect(expr,value) __builtin_expect ((expr),(value))
192# define inline_size static inline /* inline for codesize */
193# if EV_MINIMAL
168# define inline inline 194# define noinline __attribute__ ((noinline))
195# define inline_speed static noinline
196# else
197# define noinline
198# define inline_speed static inline
199# endif
169#else 200#else
170# define expect(expr,value) (expr) 201# define expect(expr,value) (expr)
171# define inline static 202# define inline_speed static
203# define inline_minimal static
204# define noinline
172#endif 205#endif
173 206
174#define expect_false(expr) expect ((expr) != 0, 0) 207#define expect_false(expr) expect ((expr) != 0, 0)
175#define expect_true(expr) expect ((expr) != 0, 1) 208#define expect_true(expr) expect ((expr) != 0, 1)
176 209
178#define ABSPRI(w) ((w)->priority - EV_MINPRI) 211#define ABSPRI(w) ((w)->priority - EV_MINPRI)
179 212
180#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 213#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
181#define EMPTY2(a,b) /* used to suppress some warnings */ 214#define EMPTY2(a,b) /* used to suppress some warnings */
182 215
183typedef struct ev_watcher *W; 216typedef ev_watcher *W;
184typedef struct ev_watcher_list *WL; 217typedef ev_watcher_list *WL;
185typedef struct ev_watcher_time *WT; 218typedef ev_watcher_time *WT;
186 219
187static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 220static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
188 221
189#ifdef _WIN32 222#ifdef _WIN32
190# include "ev_win32.c" 223# include "ev_win32.c"
192 225
193/*****************************************************************************/ 226/*****************************************************************************/
194 227
195static void (*syserr_cb)(const char *msg); 228static void (*syserr_cb)(const char *msg);
196 229
230void
197void ev_set_syserr_cb (void (*cb)(const char *msg)) 231ev_set_syserr_cb (void (*cb)(const char *msg))
198{ 232{
199 syserr_cb = cb; 233 syserr_cb = cb;
200} 234}
201 235
202static void 236static void noinline
203syserr (const char *msg) 237syserr (const char *msg)
204{ 238{
205 if (!msg) 239 if (!msg)
206 msg = "(libev) system error"; 240 msg = "(libev) system error";
207 241
214 } 248 }
215} 249}
216 250
217static void *(*alloc)(void *ptr, long size); 251static void *(*alloc)(void *ptr, long size);
218 252
253void
219void ev_set_allocator (void *(*cb)(void *ptr, long size)) 254ev_set_allocator (void *(*cb)(void *ptr, long size))
220{ 255{
221 alloc = cb; 256 alloc = cb;
222} 257}
223 258
224static void * 259static void *
296 gettimeofday (&tv, 0); 331 gettimeofday (&tv, 0);
297 return tv.tv_sec + tv.tv_usec * 1e-6; 332 return tv.tv_sec + tv.tv_usec * 1e-6;
298#endif 333#endif
299} 334}
300 335
301inline ev_tstamp 336ev_tstamp inline_size
302get_clock (void) 337get_clock (void)
303{ 338{
304#if EV_USE_MONOTONIC 339#if EV_USE_MONOTONIC
305 if (expect_true (have_monotonic)) 340 if (expect_true (have_monotonic))
306 { 341 {
349#define array_free(stem, idx) \ 384#define array_free(stem, idx) \
350 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; 385 ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
351 386
352/*****************************************************************************/ 387/*****************************************************************************/
353 388
354static void 389void noinline
355anfds_init (ANFD *base, int count)
356{
357 while (count--)
358 {
359 base->head = 0;
360 base->events = EV_NONE;
361 base->reify = 0;
362
363 ++base;
364 }
365}
366
367void
368ev_feed_event (EV_P_ void *w, int revents) 390ev_feed_event (EV_P_ void *w, int revents)
369{ 391{
370 W w_ = (W)w; 392 W w_ = (W)w;
371 393
372 if (w_->pending) 394 if (expect_false (w_->pending))
373 { 395 {
374 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 396 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
375 return; 397 return;
376 } 398 }
377 399
379 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2); 401 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
380 pendings [ABSPRI (w_)][w_->pending - 1].w = w_; 402 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
381 pendings [ABSPRI (w_)][w_->pending - 1].events = revents; 403 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
382} 404}
383 405
384static void 406void inline_size
385queue_events (EV_P_ W *events, int eventcnt, int type) 407queue_events (EV_P_ W *events, int eventcnt, int type)
386{ 408{
387 int i; 409 int i;
388 410
389 for (i = 0; i < eventcnt; ++i) 411 for (i = 0; i < eventcnt; ++i)
390 ev_feed_event (EV_A_ events [i], type); 412 ev_feed_event (EV_A_ events [i], type);
391} 413}
392 414
393inline void 415/*****************************************************************************/
416
417void inline_size
418anfds_init (ANFD *base, int count)
419{
420 while (count--)
421 {
422 base->head = 0;
423 base->events = EV_NONE;
424 base->reify = 0;
425
426 ++base;
427 }
428}
429
430void inline_speed
394fd_event (EV_P_ int fd, int revents) 431fd_event (EV_P_ int fd, int revents)
395{ 432{
396 ANFD *anfd = anfds + fd; 433 ANFD *anfd = anfds + fd;
397 struct ev_io *w; 434 ev_io *w;
398 435
399 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 436 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
400 { 437 {
401 int ev = w->events & revents; 438 int ev = w->events & revents;
402 439
403 if (ev) 440 if (ev)
404 ev_feed_event (EV_A_ (W)w, ev); 441 ev_feed_event (EV_A_ (W)w, ev);
409ev_feed_fd_event (EV_P_ int fd, int revents) 446ev_feed_fd_event (EV_P_ int fd, int revents)
410{ 447{
411 fd_event (EV_A_ fd, revents); 448 fd_event (EV_A_ fd, revents);
412} 449}
413 450
414/*****************************************************************************/ 451void inline_size
415
416static void
417fd_reify (EV_P) 452fd_reify (EV_P)
418{ 453{
419 int i; 454 int i;
420 455
421 for (i = 0; i < fdchangecnt; ++i) 456 for (i = 0; i < fdchangecnt; ++i)
422 { 457 {
423 int fd = fdchanges [i]; 458 int fd = fdchanges [i];
424 ANFD *anfd = anfds + fd; 459 ANFD *anfd = anfds + fd;
425 struct ev_io *w; 460 ev_io *w;
426 461
427 int events = 0; 462 int events = 0;
428 463
429 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 464 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
430 events |= w->events; 465 events |= w->events;
431 466
432#if EV_SELECT_IS_WINSOCKET 467#if EV_SELECT_IS_WINSOCKET
433 if (events) 468 if (events)
434 { 469 {
438 } 473 }
439#endif 474#endif
440 475
441 anfd->reify = 0; 476 anfd->reify = 0;
442 477
443 method_modify (EV_A_ fd, anfd->events, events); 478 backend_modify (EV_A_ fd, anfd->events, events);
444 anfd->events = events; 479 anfd->events = events;
445 } 480 }
446 481
447 fdchangecnt = 0; 482 fdchangecnt = 0;
448} 483}
449 484
450static void 485void inline_size
451fd_change (EV_P_ int fd) 486fd_change (EV_P_ int fd)
452{ 487{
453 if (anfds [fd].reify) 488 if (expect_false (anfds [fd].reify))
454 return; 489 return;
455 490
456 anfds [fd].reify = 1; 491 anfds [fd].reify = 1;
457 492
458 ++fdchangecnt; 493 ++fdchangecnt;
459 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); 494 array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
460 fdchanges [fdchangecnt - 1] = fd; 495 fdchanges [fdchangecnt - 1] = fd;
461} 496}
462 497
463static void 498void inline_speed
464fd_kill (EV_P_ int fd) 499fd_kill (EV_P_ int fd)
465{ 500{
466 struct ev_io *w; 501 ev_io *w;
467 502
468 while ((w = (struct ev_io *)anfds [fd].head)) 503 while ((w = (ev_io *)anfds [fd].head))
469 { 504 {
470 ev_io_stop (EV_A_ w); 505 ev_io_stop (EV_A_ w);
471 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 506 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
472 } 507 }
473} 508}
474 509
475static int 510int inline_size
476fd_valid (int fd) 511fd_valid (int fd)
477{ 512{
478#ifdef _WIN32 513#ifdef _WIN32
479 return _get_osfhandle (fd) != -1; 514 return _get_osfhandle (fd) != -1;
480#else 515#else
481 return fcntl (fd, F_GETFD) != -1; 516 return fcntl (fd, F_GETFD) != -1;
482#endif 517#endif
483} 518}
484 519
485/* called on EBADF to verify fds */ 520/* called on EBADF to verify fds */
486static void 521static void noinline
487fd_ebadf (EV_P) 522fd_ebadf (EV_P)
488{ 523{
489 int fd; 524 int fd;
490 525
491 for (fd = 0; fd < anfdmax; ++fd) 526 for (fd = 0; fd < anfdmax; ++fd)
493 if (!fd_valid (fd) == -1 && errno == EBADF) 528 if (!fd_valid (fd) == -1 && errno == EBADF)
494 fd_kill (EV_A_ fd); 529 fd_kill (EV_A_ fd);
495} 530}
496 531
497/* called on ENOMEM in select/poll to kill some fds and retry */ 532/* called on ENOMEM in select/poll to kill some fds and retry */
498static void 533static void noinline
499fd_enomem (EV_P) 534fd_enomem (EV_P)
500{ 535{
501 int fd; 536 int fd;
502 537
503 for (fd = anfdmax; fd--; ) 538 for (fd = anfdmax; fd--; )
506 fd_kill (EV_A_ fd); 541 fd_kill (EV_A_ fd);
507 return; 542 return;
508 } 543 }
509} 544}
510 545
511/* usually called after fork if method needs to re-arm all fds from scratch */ 546/* usually called after fork if backend needs to re-arm all fds from scratch */
512static void 547static void noinline
513fd_rearm_all (EV_P) 548fd_rearm_all (EV_P)
514{ 549{
515 int fd; 550 int fd;
516 551
517 /* this should be highly optimised to not do anything but set a flag */ 552 /* this should be highly optimised to not do anything but set a flag */
523 } 558 }
524} 559}
525 560
526/*****************************************************************************/ 561/*****************************************************************************/
527 562
528static void 563void inline_speed
529upheap (WT *heap, int k) 564upheap (WT *heap, int k)
530{ 565{
531 WT w = heap [k]; 566 WT w = heap [k];
532 567
533 while (k && heap [k >> 1]->at > w->at) 568 while (k && heap [k >> 1]->at > w->at)
540 heap [k] = w; 575 heap [k] = w;
541 ((W)heap [k])->active = k + 1; 576 ((W)heap [k])->active = k + 1;
542 577
543} 578}
544 579
545static void 580void inline_speed
546downheap (WT *heap, int N, int k) 581downheap (WT *heap, int N, int k)
547{ 582{
548 WT w = heap [k]; 583 WT w = heap [k];
549 584
550 while (k < (N >> 1)) 585 while (k < (N >> 1))
564 599
565 heap [k] = w; 600 heap [k] = w;
566 ((W)heap [k])->active = k + 1; 601 ((W)heap [k])->active = k + 1;
567} 602}
568 603
569inline void 604void inline_size
570adjustheap (WT *heap, int N, int k) 605adjustheap (WT *heap, int N, int k)
571{ 606{
572 upheap (heap, k); 607 upheap (heap, k);
573 downheap (heap, N, k); 608 downheap (heap, N, k);
574} 609}
584static ANSIG *signals; 619static ANSIG *signals;
585static int signalmax; 620static int signalmax;
586 621
587static int sigpipe [2]; 622static int sigpipe [2];
588static sig_atomic_t volatile gotsig; 623static sig_atomic_t volatile gotsig;
589static struct ev_io sigev; 624static ev_io sigev;
590 625
591static void 626void inline_size
592signals_init (ANSIG *base, int count) 627signals_init (ANSIG *base, int count)
593{ 628{
594 while (count--) 629 while (count--)
595 { 630 {
596 base->head = 0; 631 base->head = 0;
616 write (sigpipe [1], &signum, 1); 651 write (sigpipe [1], &signum, 1);
617 errno = old_errno; 652 errno = old_errno;
618 } 653 }
619} 654}
620 655
621void 656void noinline
622ev_feed_signal_event (EV_P_ int signum) 657ev_feed_signal_event (EV_P_ int signum)
623{ 658{
624 WL w; 659 WL w;
625 660
626#if EV_MULTIPLICITY 661#if EV_MULTIPLICITY
637 for (w = signals [signum].head; w; w = w->next) 672 for (w = signals [signum].head; w; w = w->next)
638 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 673 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
639} 674}
640 675
641static void 676static void
642sigcb (EV_P_ struct ev_io *iow, int revents) 677sigcb (EV_P_ ev_io *iow, int revents)
643{ 678{
644 int signum; 679 int signum;
645 680
646 read (sigpipe [0], &revents, 1); 681 read (sigpipe [0], &revents, 1);
647 gotsig = 0; 682 gotsig = 0;
649 for (signum = signalmax; signum--; ) 684 for (signum = signalmax; signum--; )
650 if (signals [signum].gotsig) 685 if (signals [signum].gotsig)
651 ev_feed_signal_event (EV_A_ signum + 1); 686 ev_feed_signal_event (EV_A_ signum + 1);
652} 687}
653 688
654inline void 689void inline_size
655fd_intern (int fd) 690fd_intern (int fd)
656{ 691{
657#ifdef _WIN32 692#ifdef _WIN32
658 int arg = 1; 693 int arg = 1;
659 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 694 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
661 fcntl (fd, F_SETFD, FD_CLOEXEC); 696 fcntl (fd, F_SETFD, FD_CLOEXEC);
662 fcntl (fd, F_SETFL, O_NONBLOCK); 697 fcntl (fd, F_SETFL, O_NONBLOCK);
663#endif 698#endif
664} 699}
665 700
666static void 701static void noinline
667siginit (EV_P) 702siginit (EV_P)
668{ 703{
669 fd_intern (sigpipe [0]); 704 fd_intern (sigpipe [0]);
670 fd_intern (sigpipe [1]); 705 fd_intern (sigpipe [1]);
671 706
674 ev_unref (EV_A); /* child watcher should not keep loop alive */ 709 ev_unref (EV_A); /* child watcher should not keep loop alive */
675} 710}
676 711
677/*****************************************************************************/ 712/*****************************************************************************/
678 713
679static struct ev_child *childs [PID_HASHSIZE]; 714static ev_child *childs [PID_HASHSIZE];
680 715
681#ifndef _WIN32 716#ifndef _WIN32
682 717
683static struct ev_signal childev; 718static ev_signal childev;
684 719
685#ifndef WCONTINUED 720void inline_speed
686# define WCONTINUED 0
687#endif
688
689static void
690child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) 721child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
691{ 722{
692 struct ev_child *w; 723 ev_child *w;
693 724
694 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) 725 for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
695 if (w->pid == pid || !w->pid) 726 if (w->pid == pid || !w->pid)
696 { 727 {
697 ev_priority (w) = ev_priority (sw); /* need to do it *now* */ 728 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
698 w->rpid = pid; 729 w->rpid = pid;
699 w->rstatus = status; 730 w->rstatus = status;
700 ev_feed_event (EV_A_ (W)w, EV_CHILD); 731 ev_feed_event (EV_A_ (W)w, EV_CHILD);
701 } 732 }
702} 733}
703 734
735#ifndef WCONTINUED
736# define WCONTINUED 0
737#endif
738
704static void 739static void
705childcb (EV_P_ struct ev_signal *sw, int revents) 740childcb (EV_P_ ev_signal *sw, int revents)
706{ 741{
707 int pid, status; 742 int pid, status;
708 743
744 /* some systems define WCONTINUED but then fail to support it (linux 2.4) */
709 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 745 if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
710 { 746 if (!WCONTINUED
747 || errno != EINVAL
748 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
749 return;
750
711 /* make sure we are called again until all childs have been reaped */ 751 /* make sure we are called again until all childs have been reaped */
752 /* we need to do it this way so that the callback gets called before we continue */
712 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 753 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
713 754
714 child_reap (EV_A_ sw, pid, pid, status); 755 child_reap (EV_A_ sw, pid, pid, status);
715 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 756 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
716 }
717} 757}
718 758
719#endif 759#endif
720 760
721/*****************************************************************************/ 761/*****************************************************************************/
747{ 787{
748 return EV_VERSION_MINOR; 788 return EV_VERSION_MINOR;
749} 789}
750 790
751/* return true if we are running with elevated privileges and should ignore env variables */ 791/* return true if we are running with elevated privileges and should ignore env variables */
752static int 792int inline_size
753enable_secure (void) 793enable_secure (void)
754{ 794{
755#ifdef _WIN32 795#ifdef _WIN32
756 return 0; 796 return 0;
757#else 797#else
759 || getgid () != getegid (); 799 || getgid () != getegid ();
760#endif 800#endif
761} 801}
762 802
763unsigned int 803unsigned int
764ev_method (EV_P) 804ev_supported_backends (void)
765{ 805{
766 return method; 806 unsigned int flags = 0;
807
808 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
809 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
810 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
811 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
812 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
813
814 return flags;
815}
816
817unsigned int
818ev_recommended_backends (void)
819{
820 unsigned int flags = ev_supported_backends ();
821
822#ifndef __NetBSD__
823 /* kqueue is borked on everything but netbsd apparently */
824 /* it usually doesn't work correctly on anything but sockets and pipes */
825 flags &= ~EVBACKEND_KQUEUE;
826#endif
827#ifdef __APPLE__
828 // flags &= ~EVBACKEND_KQUEUE; for documentation
829 flags &= ~EVBACKEND_POLL;
830#endif
831
832 return flags;
833}
834
835unsigned int
836ev_embeddable_backends (void)
837{
838 return EVBACKEND_EPOLL
839 | EVBACKEND_KQUEUE
840 | EVBACKEND_PORT;
841}
842
843unsigned int
844ev_backend (EV_P)
845{
846 return backend;
767} 847}
768 848
769static void 849static void
770loop_init (EV_P_ unsigned int flags) 850loop_init (EV_P_ unsigned int flags)
771{ 851{
772 if (!method) 852 if (!backend)
773 { 853 {
774#if EV_USE_MONOTONIC 854#if EV_USE_MONOTONIC
775 { 855 {
776 struct timespec ts; 856 struct timespec ts;
777 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 857 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
782 ev_rt_now = ev_time (); 862 ev_rt_now = ev_time ();
783 mn_now = get_clock (); 863 mn_now = get_clock ();
784 now_floor = mn_now; 864 now_floor = mn_now;
785 rtmn_diff = ev_rt_now - mn_now; 865 rtmn_diff = ev_rt_now - mn_now;
786 866
787 if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS")) 867 if (!(flags & EVFLAG_NOENV)
868 && !enable_secure ()
869 && getenv ("LIBEV_FLAGS"))
788 flags = atoi (getenv ("LIBEV_FLAGS")); 870 flags = atoi (getenv ("LIBEV_FLAGS"));
789 871
790 if (!(flags & 0x0000ffff)) 872 if (!(flags & 0x0000ffffUL))
791 flags |= 0x0000ffff; 873 flags |= ev_recommended_backends ();
792 874
793 method = 0; 875 backend = 0;
794#if EV_USE_PORT 876#if EV_USE_PORT
795 if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags); 877 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
796#endif 878#endif
797#if EV_USE_KQUEUE 879#if EV_USE_KQUEUE
798 if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags); 880 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
799#endif 881#endif
800#if EV_USE_EPOLL 882#if EV_USE_EPOLL
801 if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags); 883 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
802#endif 884#endif
803#if EV_USE_POLL 885#if EV_USE_POLL
804 if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags); 886 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
805#endif 887#endif
806#if EV_USE_SELECT 888#if EV_USE_SELECT
807 if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags); 889 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
808#endif 890#endif
809 891
810 ev_init (&sigev, sigcb); 892 ev_init (&sigev, sigcb);
811 ev_set_priority (&sigev, EV_MAXPRI); 893 ev_set_priority (&sigev, EV_MAXPRI);
812 } 894 }
813} 895}
814 896
815void 897static void
816loop_destroy (EV_P) 898loop_destroy (EV_P)
817{ 899{
818 int i; 900 int i;
819 901
820#if EV_USE_PORT 902#if EV_USE_PORT
821 if (method == EVMETHOD_PORT ) port_destroy (EV_A); 903 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
822#endif 904#endif
823#if EV_USE_KQUEUE 905#if EV_USE_KQUEUE
824 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 906 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
825#endif 907#endif
826#if EV_USE_EPOLL 908#if EV_USE_EPOLL
827 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 909 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
828#endif 910#endif
829#if EV_USE_POLL 911#if EV_USE_POLL
830 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 912 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
831#endif 913#endif
832#if EV_USE_SELECT 914#if EV_USE_SELECT
833 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 915 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
834#endif 916#endif
835 917
836 for (i = NUMPRI; i--; ) 918 for (i = NUMPRI; i--; )
837 array_free (pending, [i]); 919 array_free (pending, [i]);
838 920
839 /* have to use the microsoft-never-gets-it-right macro */ 921 /* have to use the microsoft-never-gets-it-right macro */
840 array_free (fdchange, EMPTY0); 922 array_free (fdchange, EMPTY0);
841 array_free (timer, EMPTY0); 923 array_free (timer, EMPTY0);
842#if EV_PERIODICS 924#if EV_PERIODIC_ENABLE
843 array_free (periodic, EMPTY0); 925 array_free (periodic, EMPTY0);
844#endif 926#endif
845 array_free (idle, EMPTY0); 927 array_free (idle, EMPTY0);
846 array_free (prepare, EMPTY0); 928 array_free (prepare, EMPTY0);
847 array_free (check, EMPTY0); 929 array_free (check, EMPTY0);
848 930
849 method = 0; 931 backend = 0;
850} 932}
851 933
852static void 934static void
853loop_fork (EV_P) 935loop_fork (EV_P)
854{ 936{
855#if EV_USE_PORT 937#if EV_USE_PORT
856 if (method == EVMETHOD_PORT ) port_fork (EV_A); 938 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
857#endif 939#endif
858#if EV_USE_KQUEUE 940#if EV_USE_KQUEUE
859 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); 941 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
860#endif 942#endif
861#if EV_USE_EPOLL 943#if EV_USE_EPOLL
862 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 944 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
863#endif 945#endif
864 946
865 if (ev_is_active (&sigev)) 947 if (ev_is_active (&sigev))
866 { 948 {
867 /* default loop */ 949 /* default loop */
888 970
889 memset (loop, 0, sizeof (struct ev_loop)); 971 memset (loop, 0, sizeof (struct ev_loop));
890 972
891 loop_init (EV_A_ flags); 973 loop_init (EV_A_ flags);
892 974
893 if (ev_method (EV_A)) 975 if (ev_backend (EV_A))
894 return loop; 976 return loop;
895 977
896 return 0; 978 return 0;
897} 979}
898 980
911 993
912#endif 994#endif
913 995
914#if EV_MULTIPLICITY 996#if EV_MULTIPLICITY
915struct ev_loop * 997struct ev_loop *
916ev_default_loop_ (unsigned int flags) 998ev_default_loop_init (unsigned int flags)
917#else 999#else
918int 1000int
919ev_default_loop (unsigned int flags) 1001ev_default_loop (unsigned int flags)
920#endif 1002#endif
921{ 1003{
931 ev_default_loop_ptr = 1; 1013 ev_default_loop_ptr = 1;
932#endif 1014#endif
933 1015
934 loop_init (EV_A_ flags); 1016 loop_init (EV_A_ flags);
935 1017
936 if (ev_method (EV_A)) 1018 if (ev_backend (EV_A))
937 { 1019 {
938 siginit (EV_A); 1020 siginit (EV_A);
939 1021
940#ifndef _WIN32 1022#ifndef _WIN32
941 ev_signal_init (&childev, childcb, SIGCHLD); 1023 ev_signal_init (&childev, childcb, SIGCHLD);
977{ 1059{
978#if EV_MULTIPLICITY 1060#if EV_MULTIPLICITY
979 struct ev_loop *loop = ev_default_loop_ptr; 1061 struct ev_loop *loop = ev_default_loop_ptr;
980#endif 1062#endif
981 1063
982 if (method) 1064 if (backend)
983 postfork = 1; 1065 postfork = 1;
984} 1066}
985 1067
986/*****************************************************************************/ 1068/*****************************************************************************/
987 1069
988static int 1070int inline_size
989any_pending (EV_P) 1071any_pending (EV_P)
990{ 1072{
991 int pri; 1073 int pri;
992 1074
993 for (pri = NUMPRI; pri--; ) 1075 for (pri = NUMPRI; pri--; )
995 return 1; 1077 return 1;
996 1078
997 return 0; 1079 return 0;
998} 1080}
999 1081
1000static void 1082void inline_speed
1001call_pending (EV_P) 1083call_pending (EV_P)
1002{ 1084{
1003 int pri; 1085 int pri;
1004 1086
1005 for (pri = NUMPRI; pri--; ) 1087 for (pri = NUMPRI; pri--; )
1006 while (pendingcnt [pri]) 1088 while (pendingcnt [pri])
1007 { 1089 {
1008 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1090 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1009 1091
1010 if (p->w) 1092 if (expect_true (p->w))
1011 { 1093 {
1094 assert (("non-pending watcher on pending list", p->w->pending));
1095
1012 p->w->pending = 0; 1096 p->w->pending = 0;
1013 EV_CB_INVOKE (p->w, p->events); 1097 EV_CB_INVOKE (p->w, p->events);
1014 } 1098 }
1015 } 1099 }
1016} 1100}
1017 1101
1018static void 1102void inline_size
1019timers_reify (EV_P) 1103timers_reify (EV_P)
1020{ 1104{
1021 while (timercnt && ((WT)timers [0])->at <= mn_now) 1105 while (timercnt && ((WT)timers [0])->at <= mn_now)
1022 { 1106 {
1023 struct ev_timer *w = timers [0]; 1107 ev_timer *w = timers [0];
1024 1108
1025 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1109 assert (("inactive timer on timer heap detected", ev_is_active (w)));
1026 1110
1027 /* first reschedule or stop timer */ 1111 /* first reschedule or stop timer */
1028 if (w->repeat) 1112 if (w->repeat)
1040 1124
1041 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1125 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1042 } 1126 }
1043} 1127}
1044 1128
1045#if EV_PERIODICS 1129#if EV_PERIODIC_ENABLE
1046static void 1130void inline_size
1047periodics_reify (EV_P) 1131periodics_reify (EV_P)
1048{ 1132{
1049 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1133 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1050 { 1134 {
1051 struct ev_periodic *w = periodics [0]; 1135 ev_periodic *w = periodics [0];
1052 1136
1053 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1137 assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1054 1138
1055 /* first reschedule or stop timer */ 1139 /* first reschedule or stop timer */
1056 if (w->reschedule_cb) 1140 if (w->reschedule_cb)
1070 1154
1071 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1155 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1072 } 1156 }
1073} 1157}
1074 1158
1075static void 1159static void noinline
1076periodics_reschedule (EV_P) 1160periodics_reschedule (EV_P)
1077{ 1161{
1078 int i; 1162 int i;
1079 1163
1080 /* adjust periodics after time jump */ 1164 /* adjust periodics after time jump */
1081 for (i = 0; i < periodiccnt; ++i) 1165 for (i = 0; i < periodiccnt; ++i)
1082 { 1166 {
1083 struct ev_periodic *w = periodics [i]; 1167 ev_periodic *w = periodics [i];
1084 1168
1085 if (w->reschedule_cb) 1169 if (w->reschedule_cb)
1086 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1170 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1087 else if (w->interval) 1171 else if (w->interval)
1088 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1172 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1092 for (i = periodiccnt >> 1; i--; ) 1176 for (i = periodiccnt >> 1; i--; )
1093 downheap ((WT *)periodics, periodiccnt, i); 1177 downheap ((WT *)periodics, periodiccnt, i);
1094} 1178}
1095#endif 1179#endif
1096 1180
1097inline int 1181int inline_size
1098time_update_monotonic (EV_P) 1182time_update_monotonic (EV_P)
1099{ 1183{
1100 mn_now = get_clock (); 1184 mn_now = get_clock ();
1101 1185
1102 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) 1186 if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1110 ev_rt_now = ev_time (); 1194 ev_rt_now = ev_time ();
1111 return 1; 1195 return 1;
1112 } 1196 }
1113} 1197}
1114 1198
1115static void 1199void inline_size
1116time_update (EV_P) 1200time_update (EV_P)
1117{ 1201{
1118 int i; 1202 int i;
1119 1203
1120#if EV_USE_MONOTONIC 1204#if EV_USE_MONOTONIC
1122 { 1206 {
1123 if (time_update_monotonic (EV_A)) 1207 if (time_update_monotonic (EV_A))
1124 { 1208 {
1125 ev_tstamp odiff = rtmn_diff; 1209 ev_tstamp odiff = rtmn_diff;
1126 1210
1127 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1211 /* loop a few times, before making important decisions.
1212 * on the choice of "4": one iteration isn't enough,
1213 * in case we get preempted during the calls to
1214 * ev_time and get_clock. a second call is almost guarenteed
1215 * to succeed in that case, though. and looping a few more times
1216 * doesn't hurt either as we only do this on time-jumps or
1217 * in the unlikely event of getting preempted here.
1218 */
1219 for (i = 4; --i; )
1128 { 1220 {
1129 rtmn_diff = ev_rt_now - mn_now; 1221 rtmn_diff = ev_rt_now - mn_now;
1130 1222
1131 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1223 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1132 return; /* all is well */ 1224 return; /* all is well */
1134 ev_rt_now = ev_time (); 1226 ev_rt_now = ev_time ();
1135 mn_now = get_clock (); 1227 mn_now = get_clock ();
1136 now_floor = mn_now; 1228 now_floor = mn_now;
1137 } 1229 }
1138 1230
1139# if EV_PERIODICS 1231# if EV_PERIODIC_ENABLE
1140 periodics_reschedule (EV_A); 1232 periodics_reschedule (EV_A);
1141# endif 1233# endif
1142 /* no timer adjustment, as the monotonic clock doesn't jump */ 1234 /* no timer adjustment, as the monotonic clock doesn't jump */
1143 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ 1235 /* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1144 } 1236 }
1148 { 1240 {
1149 ev_rt_now = ev_time (); 1241 ev_rt_now = ev_time ();
1150 1242
1151 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) 1243 if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1152 { 1244 {
1153#if EV_PERIODICS 1245#if EV_PERIODIC_ENABLE
1154 periodics_reschedule (EV_A); 1246 periodics_reschedule (EV_A);
1155#endif 1247#endif
1156 1248
1157 /* adjust timers. this is easy, as the offset is the same for all */ 1249 /* adjust timers. this is easy, as the offset is the same for all */
1158 for (i = 0; i < timercnt; ++i) 1250 for (i = 0; i < timercnt; ++i)
1178static int loop_done; 1270static int loop_done;
1179 1271
1180void 1272void
1181ev_loop (EV_P_ int flags) 1273ev_loop (EV_P_ int flags)
1182{ 1274{
1183 double block;
1184 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1275 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1276 ? EVUNLOOP_ONE
1277 : EVUNLOOP_CANCEL;
1185 1278
1186 while (activecnt) 1279 while (activecnt)
1187 { 1280 {
1188 /* queue check watchers (and execute them) */ 1281 /* queue check watchers (and execute them) */
1189 if (expect_false (preparecnt)) 1282 if (expect_false (preparecnt))
1198 1291
1199 /* update fd-related kernel structures */ 1292 /* update fd-related kernel structures */
1200 fd_reify (EV_A); 1293 fd_reify (EV_A);
1201 1294
1202 /* calculate blocking time */ 1295 /* calculate blocking time */
1296 {
1297 double block;
1203 1298
1204 /* we only need this for !monotonic clock or timers, but as we basically 1299 if (flags & EVLOOP_NONBLOCK || idlecnt)
1205 always have timers, we just calculate it always */ 1300 block = 0.; /* do not block at all */
1301 else
1302 {
1303 /* update time to cancel out callback processing overhead */
1206#if EV_USE_MONOTONIC 1304#if EV_USE_MONOTONIC
1207 if (expect_true (have_monotonic)) 1305 if (expect_true (have_monotonic))
1208 time_update_monotonic (EV_A); 1306 time_update_monotonic (EV_A);
1209 else 1307 else
1210#endif 1308#endif
1211 { 1309 {
1212 ev_rt_now = ev_time (); 1310 ev_rt_now = ev_time ();
1213 mn_now = ev_rt_now; 1311 mn_now = ev_rt_now;
1214 } 1312 }
1215 1313
1216 if (flags & EVLOOP_NONBLOCK || idlecnt)
1217 block = 0.;
1218 else
1219 {
1220 block = MAX_BLOCKTIME; 1314 block = MAX_BLOCKTIME;
1221 1315
1222 if (timercnt) 1316 if (timercnt)
1223 { 1317 {
1224 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1318 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1225 if (block > to) block = to; 1319 if (block > to) block = to;
1226 } 1320 }
1227 1321
1228#if EV_PERIODICS 1322#if EV_PERIODIC_ENABLE
1229 if (periodiccnt) 1323 if (periodiccnt)
1230 { 1324 {
1231 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1325 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1232 if (block > to) block = to; 1326 if (block > to) block = to;
1233 } 1327 }
1234#endif 1328#endif
1235 1329
1236 if (block < 0.) block = 0.; 1330 if (expect_false (block < 0.)) block = 0.;
1237 } 1331 }
1238 1332
1239 method_poll (EV_A_ block); 1333 backend_poll (EV_A_ block);
1334 }
1240 1335
1241 /* update ev_rt_now, do magic */ 1336 /* update ev_rt_now, do magic */
1242 time_update (EV_A); 1337 time_update (EV_A);
1243 1338
1244 /* queue pending timers and reschedule them */ 1339 /* queue pending timers and reschedule them */
1245 timers_reify (EV_A); /* relative timers called last */ 1340 timers_reify (EV_A); /* relative timers called last */
1246#if EV_PERIODICS 1341#if EV_PERIODIC_ENABLE
1247 periodics_reify (EV_A); /* absolute timers called first */ 1342 periodics_reify (EV_A); /* absolute timers called first */
1248#endif 1343#endif
1249 1344
1250 /* queue idle watchers unless io or timers are pending */ 1345 /* queue idle watchers unless other events are pending */
1251 if (idlecnt && !any_pending (EV_A)) 1346 if (idlecnt && !any_pending (EV_A))
1252 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1347 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1253 1348
1254 /* queue check watchers, to be executed first */ 1349 /* queue check watchers, to be executed first */
1255 if (checkcnt) 1350 if (expect_false (checkcnt))
1256 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1351 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1257 1352
1258 call_pending (EV_A); 1353 call_pending (EV_A);
1259 1354
1260 if (loop_done) 1355 if (expect_false (loop_done))
1261 break; 1356 break;
1262 } 1357 }
1263 1358
1264 if (loop_done != 2) 1359 if (loop_done == EVUNLOOP_ONE)
1265 loop_done = 0; 1360 loop_done = EVUNLOOP_CANCEL;
1266} 1361}
1267 1362
1268void 1363void
1269ev_unloop (EV_P_ int how) 1364ev_unloop (EV_P_ int how)
1270{ 1365{
1271 loop_done = how; 1366 loop_done = how;
1272} 1367}
1273 1368
1274/*****************************************************************************/ 1369/*****************************************************************************/
1275 1370
1276inline void 1371void inline_size
1277wlist_add (WL *head, WL elem) 1372wlist_add (WL *head, WL elem)
1278{ 1373{
1279 elem->next = *head; 1374 elem->next = *head;
1280 *head = elem; 1375 *head = elem;
1281} 1376}
1282 1377
1283inline void 1378void inline_size
1284wlist_del (WL *head, WL elem) 1379wlist_del (WL *head, WL elem)
1285{ 1380{
1286 while (*head) 1381 while (*head)
1287 { 1382 {
1288 if (*head == elem) 1383 if (*head == elem)
1293 1388
1294 head = &(*head)->next; 1389 head = &(*head)->next;
1295 } 1390 }
1296} 1391}
1297 1392
1298inline void 1393void inline_speed
1299ev_clear_pending (EV_P_ W w) 1394ev_clear_pending (EV_P_ W w)
1300{ 1395{
1301 if (w->pending) 1396 if (w->pending)
1302 { 1397 {
1303 pendings [ABSPRI (w)][w->pending - 1].w = 0; 1398 pendings [ABSPRI (w)][w->pending - 1].w = 0;
1304 w->pending = 0; 1399 w->pending = 0;
1305 } 1400 }
1306} 1401}
1307 1402
1308inline void 1403void inline_speed
1309ev_start (EV_P_ W w, int active) 1404ev_start (EV_P_ W w, int active)
1310{ 1405{
1311 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; 1406 if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1312 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; 1407 if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1313 1408
1314 w->active = active; 1409 w->active = active;
1315 ev_ref (EV_A); 1410 ev_ref (EV_A);
1316} 1411}
1317 1412
1318inline void 1413void inline_size
1319ev_stop (EV_P_ W w) 1414ev_stop (EV_P_ W w)
1320{ 1415{
1321 ev_unref (EV_A); 1416 ev_unref (EV_A);
1322 w->active = 0; 1417 w->active = 0;
1323} 1418}
1324 1419
1325/*****************************************************************************/ 1420/*****************************************************************************/
1326 1421
1327void 1422void
1328ev_io_start (EV_P_ struct ev_io *w) 1423ev_io_start (EV_P_ ev_io *w)
1329{ 1424{
1330 int fd = w->fd; 1425 int fd = w->fd;
1331 1426
1332 if (ev_is_active (w)) 1427 if (expect_false (ev_is_active (w)))
1333 return; 1428 return;
1334 1429
1335 assert (("ev_io_start called with negative fd", fd >= 0)); 1430 assert (("ev_io_start called with negative fd", fd >= 0));
1336 1431
1337 ev_start (EV_A_ (W)w, 1); 1432 ev_start (EV_A_ (W)w, 1);
1340 1435
1341 fd_change (EV_A_ fd); 1436 fd_change (EV_A_ fd);
1342} 1437}
1343 1438
1344void 1439void
1345ev_io_stop (EV_P_ struct ev_io *w) 1440ev_io_stop (EV_P_ ev_io *w)
1346{ 1441{
1347 ev_clear_pending (EV_A_ (W)w); 1442 ev_clear_pending (EV_A_ (W)w);
1348 if (!ev_is_active (w)) 1443 if (expect_false (!ev_is_active (w)))
1349 return; 1444 return;
1350 1445
1351 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1446 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1352 1447
1353 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1448 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1355 1450
1356 fd_change (EV_A_ w->fd); 1451 fd_change (EV_A_ w->fd);
1357} 1452}
1358 1453
1359void 1454void
1360ev_timer_start (EV_P_ struct ev_timer *w) 1455ev_timer_start (EV_P_ ev_timer *w)
1361{ 1456{
1362 if (ev_is_active (w)) 1457 if (expect_false (ev_is_active (w)))
1363 return; 1458 return;
1364 1459
1365 ((WT)w)->at += mn_now; 1460 ((WT)w)->at += mn_now;
1366 1461
1367 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1462 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1368 1463
1369 ev_start (EV_A_ (W)w, ++timercnt); 1464 ev_start (EV_A_ (W)w, ++timercnt);
1370 array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2); 1465 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1371 timers [timercnt - 1] = w; 1466 timers [timercnt - 1] = w;
1372 upheap ((WT *)timers, timercnt - 1); 1467 upheap ((WT *)timers, timercnt - 1);
1373 1468
1374 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1469 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1375} 1470}
1376 1471
1377void 1472void
1378ev_timer_stop (EV_P_ struct ev_timer *w) 1473ev_timer_stop (EV_P_ ev_timer *w)
1379{ 1474{
1380 ev_clear_pending (EV_A_ (W)w); 1475 ev_clear_pending (EV_A_ (W)w);
1381 if (!ev_is_active (w)) 1476 if (expect_false (!ev_is_active (w)))
1382 return; 1477 return;
1383 1478
1384 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1479 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1385 1480
1386 if (((W)w)->active < timercnt--) 1481 if (expect_true (((W)w)->active < timercnt--))
1387 { 1482 {
1388 timers [((W)w)->active - 1] = timers [timercnt]; 1483 timers [((W)w)->active - 1] = timers [timercnt];
1389 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1484 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1390 } 1485 }
1391 1486
1393 1488
1394 ev_stop (EV_A_ (W)w); 1489 ev_stop (EV_A_ (W)w);
1395} 1490}
1396 1491
1397void 1492void
1398ev_timer_again (EV_P_ struct ev_timer *w) 1493ev_timer_again (EV_P_ ev_timer *w)
1399{ 1494{
1400 if (ev_is_active (w)) 1495 if (ev_is_active (w))
1401 { 1496 {
1402 if (w->repeat) 1497 if (w->repeat)
1403 { 1498 {
1412 w->at = w->repeat; 1507 w->at = w->repeat;
1413 ev_timer_start (EV_A_ w); 1508 ev_timer_start (EV_A_ w);
1414 } 1509 }
1415} 1510}
1416 1511
1417#if EV_PERIODICS 1512#if EV_PERIODIC_ENABLE
1418void 1513void
1419ev_periodic_start (EV_P_ struct ev_periodic *w) 1514ev_periodic_start (EV_P_ ev_periodic *w)
1420{ 1515{
1421 if (ev_is_active (w)) 1516 if (expect_false (ev_is_active (w)))
1422 return; 1517 return;
1423 1518
1424 if (w->reschedule_cb) 1519 if (w->reschedule_cb)
1425 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1520 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1426 else if (w->interval) 1521 else if (w->interval)
1429 /* this formula differs from the one in periodic_reify because we do not always round up */ 1524 /* this formula differs from the one in periodic_reify because we do not always round up */
1430 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1525 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1431 } 1526 }
1432 1527
1433 ev_start (EV_A_ (W)w, ++periodiccnt); 1528 ev_start (EV_A_ (W)w, ++periodiccnt);
1434 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1529 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1435 periodics [periodiccnt - 1] = w; 1530 periodics [periodiccnt - 1] = w;
1436 upheap ((WT *)periodics, periodiccnt - 1); 1531 upheap ((WT *)periodics, periodiccnt - 1);
1437 1532
1438 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1533 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1439} 1534}
1440 1535
1441void 1536void
1442ev_periodic_stop (EV_P_ struct ev_periodic *w) 1537ev_periodic_stop (EV_P_ ev_periodic *w)
1443{ 1538{
1444 ev_clear_pending (EV_A_ (W)w); 1539 ev_clear_pending (EV_A_ (W)w);
1445 if (!ev_is_active (w)) 1540 if (expect_false (!ev_is_active (w)))
1446 return; 1541 return;
1447 1542
1448 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1543 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1449 1544
1450 if (((W)w)->active < periodiccnt--) 1545 if (expect_true (((W)w)->active < periodiccnt--))
1451 { 1546 {
1452 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1547 periodics [((W)w)->active - 1] = periodics [periodiccnt];
1453 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1548 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1454 } 1549 }
1455 1550
1456 ev_stop (EV_A_ (W)w); 1551 ev_stop (EV_A_ (W)w);
1457} 1552}
1458 1553
1459void 1554void
1460ev_periodic_again (EV_P_ struct ev_periodic *w) 1555ev_periodic_again (EV_P_ ev_periodic *w)
1461{ 1556{
1462 /* TODO: use adjustheap and recalculation */ 1557 /* TODO: use adjustheap and recalculation */
1463 ev_periodic_stop (EV_A_ w); 1558 ev_periodic_stop (EV_A_ w);
1464 ev_periodic_start (EV_A_ w); 1559 ev_periodic_start (EV_A_ w);
1465} 1560}
1466#endif 1561#endif
1467 1562
1468void
1469ev_idle_start (EV_P_ struct ev_idle *w)
1470{
1471 if (ev_is_active (w))
1472 return;
1473
1474 ev_start (EV_A_ (W)w, ++idlecnt);
1475 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1476 idles [idlecnt - 1] = w;
1477}
1478
1479void
1480ev_idle_stop (EV_P_ struct ev_idle *w)
1481{
1482 ev_clear_pending (EV_A_ (W)w);
1483 if (!ev_is_active (w))
1484 return;
1485
1486 idles [((W)w)->active - 1] = idles [--idlecnt];
1487 ev_stop (EV_A_ (W)w);
1488}
1489
1490void
1491ev_prepare_start (EV_P_ struct ev_prepare *w)
1492{
1493 if (ev_is_active (w))
1494 return;
1495
1496 ev_start (EV_A_ (W)w, ++preparecnt);
1497 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1498 prepares [preparecnt - 1] = w;
1499}
1500
1501void
1502ev_prepare_stop (EV_P_ struct ev_prepare *w)
1503{
1504 ev_clear_pending (EV_A_ (W)w);
1505 if (!ev_is_active (w))
1506 return;
1507
1508 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1509 ev_stop (EV_A_ (W)w);
1510}
1511
1512void
1513ev_check_start (EV_P_ struct ev_check *w)
1514{
1515 if (ev_is_active (w))
1516 return;
1517
1518 ev_start (EV_A_ (W)w, ++checkcnt);
1519 array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1520 checks [checkcnt - 1] = w;
1521}
1522
1523void
1524ev_check_stop (EV_P_ struct ev_check *w)
1525{
1526 ev_clear_pending (EV_A_ (W)w);
1527 if (!ev_is_active (w))
1528 return;
1529
1530 checks [((W)w)->active - 1] = checks [--checkcnt];
1531 ev_stop (EV_A_ (W)w);
1532}
1533
1534#ifndef SA_RESTART 1563#ifndef SA_RESTART
1535# define SA_RESTART 0 1564# define SA_RESTART 0
1536#endif 1565#endif
1537 1566
1538void 1567void
1539ev_signal_start (EV_P_ struct ev_signal *w) 1568ev_signal_start (EV_P_ ev_signal *w)
1540{ 1569{
1541#if EV_MULTIPLICITY 1570#if EV_MULTIPLICITY
1542 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1571 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1543#endif 1572#endif
1544 if (ev_is_active (w)) 1573 if (expect_false (ev_is_active (w)))
1545 return; 1574 return;
1546 1575
1547 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1576 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1548 1577
1549 ev_start (EV_A_ (W)w, 1); 1578 ev_start (EV_A_ (W)w, 1);
1563#endif 1592#endif
1564 } 1593 }
1565} 1594}
1566 1595
1567void 1596void
1568ev_signal_stop (EV_P_ struct ev_signal *w) 1597ev_signal_stop (EV_P_ ev_signal *w)
1569{ 1598{
1570 ev_clear_pending (EV_A_ (W)w); 1599 ev_clear_pending (EV_A_ (W)w);
1571 if (!ev_is_active (w)) 1600 if (expect_false (!ev_is_active (w)))
1572 return; 1601 return;
1573 1602
1574 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1603 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1575 ev_stop (EV_A_ (W)w); 1604 ev_stop (EV_A_ (W)w);
1576 1605
1577 if (!signals [w->signum - 1].head) 1606 if (!signals [w->signum - 1].head)
1578 signal (w->signum, SIG_DFL); 1607 signal (w->signum, SIG_DFL);
1579} 1608}
1580 1609
1581void 1610void
1582ev_child_start (EV_P_ struct ev_child *w) 1611ev_child_start (EV_P_ ev_child *w)
1583{ 1612{
1584#if EV_MULTIPLICITY 1613#if EV_MULTIPLICITY
1585 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 1614 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1586#endif 1615#endif
1587 if (ev_is_active (w)) 1616 if (expect_false (ev_is_active (w)))
1588 return; 1617 return;
1589 1618
1590 ev_start (EV_A_ (W)w, 1); 1619 ev_start (EV_A_ (W)w, 1);
1591 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1620 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1592} 1621}
1593 1622
1594void 1623void
1595ev_child_stop (EV_P_ struct ev_child *w) 1624ev_child_stop (EV_P_ ev_child *w)
1596{ 1625{
1597 ev_clear_pending (EV_A_ (W)w); 1626 ev_clear_pending (EV_A_ (W)w);
1598 if (!ev_is_active (w)) 1627 if (expect_false (!ev_is_active (w)))
1599 return; 1628 return;
1600 1629
1601 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1630 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1602 ev_stop (EV_A_ (W)w); 1631 ev_stop (EV_A_ (W)w);
1603} 1632}
1604 1633
1634#if EV_STAT_ENABLE
1635
1636# ifdef _WIN32
1637# define lstat(a,b) stat(a,b)
1638# endif
1639
1640#define DEF_STAT_INTERVAL 5.0074891
1641#define MIN_STAT_INTERVAL 0.1074891
1642
1643void
1644ev_stat_stat (EV_P_ ev_stat *w)
1645{
1646 if (lstat (w->path, &w->attr) < 0)
1647 w->attr.st_nlink = 0;
1648 else if (!w->attr.st_nlink)
1649 w->attr.st_nlink = 1;
1650}
1651
1652static void
1653stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1654{
1655 ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1656
1657 /* we copy this here each the time so that */
1658 /* prev has the old value when the callback gets invoked */
1659 w->prev = w->attr;
1660 ev_stat_stat (EV_A_ w);
1661
1662 if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
1663 ev_feed_event (EV_A_ w, EV_STAT);
1664}
1665
1666void
1667ev_stat_start (EV_P_ ev_stat *w)
1668{
1669 if (expect_false (ev_is_active (w)))
1670 return;
1671
1672 /* since we use memcmp, we need to clear any padding data etc. */
1673 memset (&w->prev, 0, sizeof (ev_statdata));
1674 memset (&w->attr, 0, sizeof (ev_statdata));
1675
1676 ev_stat_stat (EV_A_ w);
1677
1678 if (w->interval < MIN_STAT_INTERVAL)
1679 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1680
1681 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1682 ev_set_priority (&w->timer, ev_priority (w));
1683 ev_timer_start (EV_A_ &w->timer);
1684
1685 ev_start (EV_A_ (W)w, 1);
1686}
1687
1688void
1689ev_stat_stop (EV_P_ ev_stat *w)
1690{
1691 ev_clear_pending (EV_A_ (W)w);
1692 if (expect_false (!ev_is_active (w)))
1693 return;
1694
1695 ev_timer_stop (EV_A_ &w->timer);
1696
1697 ev_stop (EV_A_ (W)w);
1698}
1699#endif
1700
1701void
1702ev_idle_start (EV_P_ ev_idle *w)
1703{
1704 if (expect_false (ev_is_active (w)))
1705 return;
1706
1707 ev_start (EV_A_ (W)w, ++idlecnt);
1708 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1709 idles [idlecnt - 1] = w;
1710}
1711
1712void
1713ev_idle_stop (EV_P_ ev_idle *w)
1714{
1715 ev_clear_pending (EV_A_ (W)w);
1716 if (expect_false (!ev_is_active (w)))
1717 return;
1718
1719 {
1720 int active = ((W)w)->active;
1721 idles [active - 1] = idles [--idlecnt];
1722 ((W)idles [active - 1])->active = active;
1723 }
1724
1725 ev_stop (EV_A_ (W)w);
1726}
1727
1728void
1729ev_prepare_start (EV_P_ ev_prepare *w)
1730{
1731 if (expect_false (ev_is_active (w)))
1732 return;
1733
1734 ev_start (EV_A_ (W)w, ++preparecnt);
1735 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1736 prepares [preparecnt - 1] = w;
1737}
1738
1739void
1740ev_prepare_stop (EV_P_ ev_prepare *w)
1741{
1742 ev_clear_pending (EV_A_ (W)w);
1743 if (expect_false (!ev_is_active (w)))
1744 return;
1745
1746 {
1747 int active = ((W)w)->active;
1748 prepares [active - 1] = prepares [--preparecnt];
1749 ((W)prepares [active - 1])->active = active;
1750 }
1751
1752 ev_stop (EV_A_ (W)w);
1753}
1754
1755void
1756ev_check_start (EV_P_ ev_check *w)
1757{
1758 if (expect_false (ev_is_active (w)))
1759 return;
1760
1761 ev_start (EV_A_ (W)w, ++checkcnt);
1762 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1763 checks [checkcnt - 1] = w;
1764}
1765
1766void
1767ev_check_stop (EV_P_ ev_check *w)
1768{
1769 ev_clear_pending (EV_A_ (W)w);
1770 if (expect_false (!ev_is_active (w)))
1771 return;
1772
1773 {
1774 int active = ((W)w)->active;
1775 checks [active - 1] = checks [--checkcnt];
1776 ((W)checks [active - 1])->active = active;
1777 }
1778
1779 ev_stop (EV_A_ (W)w);
1780}
1781
1782#if EV_EMBED_ENABLE
1783void noinline
1784ev_embed_sweep (EV_P_ ev_embed *w)
1785{
1786 ev_loop (w->loop, EVLOOP_NONBLOCK);
1787}
1788
1789static void
1790embed_cb (EV_P_ ev_io *io, int revents)
1791{
1792 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
1793
1794 if (ev_cb (w))
1795 ev_feed_event (EV_A_ (W)w, EV_EMBED);
1796 else
1797 ev_embed_sweep (loop, w);
1798}
1799
1800void
1801ev_embed_start (EV_P_ ev_embed *w)
1802{
1803 if (expect_false (ev_is_active (w)))
1804 return;
1805
1806 {
1807 struct ev_loop *loop = w->loop;
1808 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1809 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1810 }
1811
1812 ev_set_priority (&w->io, ev_priority (w));
1813 ev_io_start (EV_A_ &w->io);
1814
1815 ev_start (EV_A_ (W)w, 1);
1816}
1817
1818void
1819ev_embed_stop (EV_P_ ev_embed *w)
1820{
1821 ev_clear_pending (EV_A_ (W)w);
1822 if (expect_false (!ev_is_active (w)))
1823 return;
1824
1825 ev_io_stop (EV_A_ &w->io);
1826
1827 ev_stop (EV_A_ (W)w);
1828}
1829#endif
1830
1605/*****************************************************************************/ 1831/*****************************************************************************/
1606 1832
1607struct ev_once 1833struct ev_once
1608{ 1834{
1609 struct ev_io io; 1835 ev_io io;
1610 struct ev_timer to; 1836 ev_timer to;
1611 void (*cb)(int revents, void *arg); 1837 void (*cb)(int revents, void *arg);
1612 void *arg; 1838 void *arg;
1613}; 1839};
1614 1840
1615static void 1841static void
1624 1850
1625 cb (revents, arg); 1851 cb (revents, arg);
1626} 1852}
1627 1853
1628static void 1854static void
1629once_cb_io (EV_P_ struct ev_io *w, int revents) 1855once_cb_io (EV_P_ ev_io *w, int revents)
1630{ 1856{
1631 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 1857 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1632} 1858}
1633 1859
1634static void 1860static void
1635once_cb_to (EV_P_ struct ev_timer *w, int revents) 1861once_cb_to (EV_P_ ev_timer *w, int revents)
1636{ 1862{
1637 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 1863 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1638} 1864}
1639 1865
1640void 1866void
1641ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 1867ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1642{ 1868{
1643 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 1869 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1644 1870
1645 if (!once) 1871 if (expect_false (!once))
1872 {
1646 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 1873 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1647 else 1874 return;
1648 { 1875 }
1876
1649 once->cb = cb; 1877 once->cb = cb;
1650 once->arg = arg; 1878 once->arg = arg;
1651 1879
1652 ev_init (&once->io, once_cb_io); 1880 ev_init (&once->io, once_cb_io);
1653 if (fd >= 0) 1881 if (fd >= 0)
1654 { 1882 {
1655 ev_io_set (&once->io, fd, events); 1883 ev_io_set (&once->io, fd, events);
1656 ev_io_start (EV_A_ &once->io); 1884 ev_io_start (EV_A_ &once->io);
1657 } 1885 }
1658 1886
1659 ev_init (&once->to, once_cb_to); 1887 ev_init (&once->to, once_cb_to);
1660 if (timeout >= 0.) 1888 if (timeout >= 0.)
1661 { 1889 {
1662 ev_timer_set (&once->to, timeout, 0.); 1890 ev_timer_set (&once->to, timeout, 0.);
1663 ev_timer_start (EV_A_ &once->to); 1891 ev_timer_start (EV_A_ &once->to);
1664 }
1665 } 1892 }
1666} 1893}
1667 1894
1668#ifdef __cplusplus 1895#ifdef __cplusplus
1669} 1896}

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