ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/libev/ev.c
(Generate patch)

Comparing libev/ev.c (file contents):
Revision 1.115 by root, Wed Nov 14 04:53:21 2007 UTC vs.
Revision 1.139 by root, Sun Nov 25 09:24:37 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
89# endif
90
91# ifndef EV_USE_PORT
92# if HAVE_PORT_H && HAVE_PORT_CREATE
93# define EV_USE_PORT 1
94# else
95# define EV_USE_PORT 0
96# endif
62# endif 97# endif
63 98
64#endif 99#endif
65 100
66#include <math.h> 101#include <math.h>
… …
90#endif 125#endif
91 126
92/**/ 127/**/
93 128
94#ifndef EV_USE_MONOTONIC 129#ifndef EV_USE_MONOTONIC
95# define EV_USE_MONOTONIC 1 130# define EV_USE_MONOTONIC 0
131#endif
132
133#ifndef EV_USE_REALTIME
134# define EV_USE_REALTIME 0
96#endif 135#endif
97 136
98#ifndef EV_USE_SELECT 137#ifndef EV_USE_SELECT
99# define EV_USE_SELECT 1 138# define EV_USE_SELECT 1
100# define EV_SELECT_USE_FD_SET 1
101#endif 139#endif
102 140
103#ifndef EV_USE_POLL 141#ifndef EV_USE_POLL
104# ifdef _WIN32 142# ifdef _WIN32
105# define EV_USE_POLL 0 143# define EV_USE_POLL 0
… …
114 152
115#ifndef EV_USE_KQUEUE 153#ifndef EV_USE_KQUEUE
116# define EV_USE_KQUEUE 0 154# define EV_USE_KQUEUE 0
117#endif 155#endif
118 156
119#ifndef EV_USE_REALTIME 157#ifndef EV_USE_PORT
120# define EV_USE_REALTIME 1 158# define EV_USE_PORT 0
121#endif 159#endif
122 160
123/**/ 161/**/
124
125/* darwin simply cannot be helped */
126#ifdef __APPLE__
127# undef EV_USE_POLL
128# undef EV_USE_KQUEUE
129#endif
130 162
131#ifndef CLOCK_MONOTONIC 163#ifndef CLOCK_MONOTONIC
132# undef EV_USE_MONOTONIC 164# undef EV_USE_MONOTONIC
133# define EV_USE_MONOTONIC 0 165# define EV_USE_MONOTONIC 0
134#endif 166#endif
… …
143#endif 175#endif
144 176
145/**/ 177/**/
146 178
147#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) */
148#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) */
149#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 */
150/*#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 */
151 183
152#ifdef EV_H 184#ifdef EV_H
153# include EV_H 185# include EV_H
154#else 186#else
155# include "ev.h" 187# include "ev.h"
156#endif 188#endif
157 189
158#if __GNUC__ >= 3 190#if __GNUC__ >= 3
159# define expect(expr,value) __builtin_expect ((expr),(value)) 191# define expect(expr,value) __builtin_expect ((expr),(value))
160# define inline inline 192# define inline static inline
161#else 193#else
162# define expect(expr,value) (expr) 194# define expect(expr,value) (expr)
163# define inline static 195# define inline static
164#endif 196#endif
165 197
… …
170#define ABSPRI(w) ((w)->priority - EV_MINPRI) 202#define ABSPRI(w) ((w)->priority - EV_MINPRI)
171 203
172#define EMPTY0 /* required for microsofts broken pseudo-c compiler */ 204#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
173#define EMPTY2(a,b) /* used to suppress some warnings */ 205#define EMPTY2(a,b) /* used to suppress some warnings */
174 206
175typedef struct ev_watcher *W; 207typedef ev_watcher *W;
176typedef struct ev_watcher_list *WL; 208typedef ev_watcher_list *WL;
177typedef struct ev_watcher_time *WT; 209typedef ev_watcher_time *WT;
178 210
179static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 211static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
180 212
181#ifdef _WIN32 213#ifdef _WIN32
182# include "ev_win32.c" 214# include "ev_win32.c"
… …
258 #include "ev_vars.h" 290 #include "ev_vars.h"
259 #undef VAR 291 #undef VAR
260 }; 292 };
261 #include "ev_wrap.h" 293 #include "ev_wrap.h"
262 294
263 struct ev_loop default_loop_struct; 295 static struct ev_loop default_loop_struct;
264 static struct ev_loop *default_loop; 296 struct ev_loop *ev_default_loop_ptr;
265 297
266#else 298#else
267 299
268 ev_tstamp ev_rt_now; 300 ev_tstamp ev_rt_now;
269 #define VAR(name,decl) static decl; 301 #define VAR(name,decl) static decl;
270 #include "ev_vars.h" 302 #include "ev_vars.h"
271 #undef VAR 303 #undef VAR
272 304
273 static int default_loop; 305 static int ev_default_loop_ptr;
274 306
275#endif 307#endif
276 308
277/*****************************************************************************/ 309/*****************************************************************************/
278 310
… …
359void 391void
360ev_feed_event (EV_P_ void *w, int revents) 392ev_feed_event (EV_P_ void *w, int revents)
361{ 393{
362 W w_ = (W)w; 394 W w_ = (W)w;
363 395
364 if (w_->pending) 396 if (expect_false (w_->pending))
365 { 397 {
366 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; 398 pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
367 return; 399 return;
368 } 400 }
369 401
… …
384 416
385inline void 417inline void
386fd_event (EV_P_ int fd, int revents) 418fd_event (EV_P_ int fd, int revents)
387{ 419{
388 ANFD *anfd = anfds + fd; 420 ANFD *anfd = anfds + fd;
389 struct ev_io *w; 421 ev_io *w;
390 422
391 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 423 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
392 { 424 {
393 int ev = w->events & revents; 425 int ev = w->events & revents;
394 426
395 if (ev) 427 if (ev)
396 ev_feed_event (EV_A_ (W)w, ev); 428 ev_feed_event (EV_A_ (W)w, ev);
… …
403 fd_event (EV_A_ fd, revents); 435 fd_event (EV_A_ fd, revents);
404} 436}
405 437
406/*****************************************************************************/ 438/*****************************************************************************/
407 439
408static void 440inline void
409fd_reify (EV_P) 441fd_reify (EV_P)
410{ 442{
411 int i; 443 int i;
412 444
413 for (i = 0; i < fdchangecnt; ++i) 445 for (i = 0; i < fdchangecnt; ++i)
414 { 446 {
415 int fd = fdchanges [i]; 447 int fd = fdchanges [i];
416 ANFD *anfd = anfds + fd; 448 ANFD *anfd = anfds + fd;
417 struct ev_io *w; 449 ev_io *w;
418 450
419 int events = 0; 451 int events = 0;
420 452
421 for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) 453 for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
422 events |= w->events; 454 events |= w->events;
423 455
424#if EV_SELECT_IS_WINSOCKET 456#if EV_SELECT_IS_WINSOCKET
425 if (events) 457 if (events)
426 { 458 {
… …
430 } 462 }
431#endif 463#endif
432 464
433 anfd->reify = 0; 465 anfd->reify = 0;
434 466
435 method_modify (EV_A_ fd, anfd->events, events); 467 backend_modify (EV_A_ fd, anfd->events, events);
436 anfd->events = events; 468 anfd->events = events;
437 } 469 }
438 470
439 fdchangecnt = 0; 471 fdchangecnt = 0;
440} 472}
441 473
442static void 474static void
443fd_change (EV_P_ int fd) 475fd_change (EV_P_ int fd)
444{ 476{
445 if (anfds [fd].reify) 477 if (expect_false (anfds [fd].reify))
446 return; 478 return;
447 479
448 anfds [fd].reify = 1; 480 anfds [fd].reify = 1;
449 481
450 ++fdchangecnt; 482 ++fdchangecnt;
… …
453} 485}
454 486
455static void 487static void
456fd_kill (EV_P_ int fd) 488fd_kill (EV_P_ int fd)
457{ 489{
458 struct ev_io *w; 490 ev_io *w;
459 491
460 while ((w = (struct ev_io *)anfds [fd].head)) 492 while ((w = (ev_io *)anfds [fd].head))
461 { 493 {
462 ev_io_stop (EV_A_ w); 494 ev_io_stop (EV_A_ w);
463 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 495 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
464 } 496 }
465} 497}
466 498
467static int 499inline int
468fd_valid (int fd) 500fd_valid (int fd)
469{ 501{
470#ifdef _WIN32 502#ifdef _WIN32
471 return _get_osfhandle (fd) != -1; 503 return _get_osfhandle (fd) != -1;
472#else 504#else
… …
498 fd_kill (EV_A_ fd); 530 fd_kill (EV_A_ fd);
499 return; 531 return;
500 } 532 }
501} 533}
502 534
503/* usually called after fork if method needs to re-arm all fds from scratch */ 535/* usually called after fork if backend needs to re-arm all fds from scratch */
504static void 536static void
505fd_rearm_all (EV_P) 537fd_rearm_all (EV_P)
506{ 538{
507 int fd; 539 int fd;
508 540
… …
576static ANSIG *signals; 608static ANSIG *signals;
577static int signalmax; 609static int signalmax;
578 610
579static int sigpipe [2]; 611static int sigpipe [2];
580static sig_atomic_t volatile gotsig; 612static sig_atomic_t volatile gotsig;
581static struct ev_io sigev; 613static ev_io sigev;
582 614
583static void 615static void
584signals_init (ANSIG *base, int count) 616signals_init (ANSIG *base, int count)
585{ 617{
586 while (count--) 618 while (count--)
… …
614ev_feed_signal_event (EV_P_ int signum) 646ev_feed_signal_event (EV_P_ int signum)
615{ 647{
616 WL w; 648 WL w;
617 649
618#if EV_MULTIPLICITY 650#if EV_MULTIPLICITY
619 assert (("feeding signal events is only supported in the default loop", loop == default_loop)); 651 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
620#endif 652#endif
621 653
622 --signum; 654 --signum;
623 655
624 if (signum < 0 || signum >= signalmax) 656 if (signum < 0 || signum >= signalmax)
… …
629 for (w = signals [signum].head; w; w = w->next) 661 for (w = signals [signum].head; w; w = w->next)
630 ev_feed_event (EV_A_ (W)w, EV_SIGNAL); 662 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
631} 663}
632 664
633static void 665static void
634sigcb (EV_P_ struct ev_io *iow, int revents) 666sigcb (EV_P_ ev_io *iow, int revents)
635{ 667{
636 int signum; 668 int signum;
637 669
638 read (sigpipe [0], &revents, 1); 670 read (sigpipe [0], &revents, 1);
639 gotsig = 0; 671 gotsig = 0;
… …
641 for (signum = signalmax; signum--; ) 673 for (signum = signalmax; signum--; )
642 if (signals [signum].gotsig) 674 if (signals [signum].gotsig)
643 ev_feed_signal_event (EV_A_ signum + 1); 675 ev_feed_signal_event (EV_A_ signum + 1);
644} 676}
645 677
646inline void 678static void
647fd_intern (int fd) 679fd_intern (int fd)
648{ 680{
649#ifdef _WIN32 681#ifdef _WIN32
650 int arg = 1; 682 int arg = 1;
651 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 683 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
666 ev_unref (EV_A); /* child watcher should not keep loop alive */ 698 ev_unref (EV_A); /* child watcher should not keep loop alive */
667} 699}
668 700
669/*****************************************************************************/ 701/*****************************************************************************/
670 702
671static struct ev_child *childs [PID_HASHSIZE]; 703static ev_child *childs [PID_HASHSIZE];
672 704
673#ifndef _WIN32 705#ifndef _WIN32
674 706
675static struct ev_signal childev; 707static ev_signal childev;
676 708
677#ifndef WCONTINUED 709#ifndef WCONTINUED
678# define WCONTINUED 0 710# define WCONTINUED 0
679#endif 711#endif
680 712
681static void 713static void
682child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) 714child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
683{ 715{
684 struct ev_child *w; 716 ev_child *w;
685 717
686 for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) 718 for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
687 if (w->pid == pid || !w->pid) 719 if (w->pid == pid || !w->pid)
688 { 720 {
689 ev_priority (w) = ev_priority (sw); /* need to do it *now* */ 721 ev_priority (w) = ev_priority (sw); /* need to do it *now* */
690 w->rpid = pid; 722 w->rpid = pid;
691 w->rstatus = status; 723 w->rstatus = status;
692 ev_feed_event (EV_A_ (W)w, EV_CHILD); 724 ev_feed_event (EV_A_ (W)w, EV_CHILD);
693 } 725 }
694} 726}
695 727
696static void 728static void
697childcb (EV_P_ struct ev_signal *sw, int revents) 729childcb (EV_P_ ev_signal *sw, int revents)
698{ 730{
699 int pid, status; 731 int pid, status;
700 732
701 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 733 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
702 { 734 {
703 /* make sure we are called again until all childs have been reaped */ 735 /* make sure we are called again until all childs have been reaped */
736 /* we need to do it this way so that the callback gets called before we continue */
704 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 737 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
705 738
706 child_reap (EV_A_ sw, pid, pid, status); 739 child_reap (EV_A_ sw, pid, pid, status);
707 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ 740 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
708 } 741 }
709} 742}
710 743
711#endif 744#endif
712 745
713/*****************************************************************************/ 746/*****************************************************************************/
714 747
748#if EV_USE_PORT
749# include "ev_port.c"
750#endif
715#if EV_USE_KQUEUE 751#if EV_USE_KQUEUE
716# include "ev_kqueue.c" 752# include "ev_kqueue.c"
717#endif 753#endif
718#if EV_USE_EPOLL 754#if EV_USE_EPOLL
719# include "ev_epoll.c" 755# include "ev_epoll.c"
… …
748 || getgid () != getegid (); 784 || getgid () != getegid ();
749#endif 785#endif
750} 786}
751 787
752unsigned int 788unsigned int
753ev_method (EV_P) 789ev_supported_backends (void)
754{ 790{
755 return method; 791 unsigned int flags = 0;
792
793 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
794 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
795 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
796 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
797 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
798
799 return flags;
800}
801
802unsigned int
803ev_recommended_backends (void)
804{
805 unsigned int flags = ev_supported_backends ();
806
807#ifndef __NetBSD__
808 /* kqueue is borked on everything but netbsd apparently */
809 /* it usually doesn't work correctly on anything but sockets and pipes */
810 flags &= ~EVBACKEND_KQUEUE;
811#endif
812#ifdef __APPLE__
813 // flags &= ~EVBACKEND_KQUEUE; for documentation
814 flags &= ~EVBACKEND_POLL;
815#endif
816
817 return flags;
818}
819
820unsigned int
821ev_embeddable_backends (void)
822{
823 return EVBACKEND_EPOLL
824 | EVBACKEND_KQUEUE
825 | EVBACKEND_PORT;
826}
827
828unsigned int
829ev_backend (EV_P)
830{
831 return backend;
756} 832}
757 833
758static void 834static void
759loop_init (EV_P_ unsigned int flags) 835loop_init (EV_P_ unsigned int flags)
760{ 836{
761 if (!method) 837 if (!backend)
762 { 838 {
763#if EV_USE_MONOTONIC 839#if EV_USE_MONOTONIC
764 { 840 {
765 struct timespec ts; 841 struct timespec ts;
766 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 842 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
… …
771 ev_rt_now = ev_time (); 847 ev_rt_now = ev_time ();
772 mn_now = get_clock (); 848 mn_now = get_clock ();
773 now_floor = mn_now; 849 now_floor = mn_now;
774 rtmn_diff = ev_rt_now - mn_now; 850 rtmn_diff = ev_rt_now - mn_now;
775 851
776 if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS")) 852 if (!(flags & EVFLAG_NOENV)
853 && !enable_secure ()
854 && getenv ("LIBEV_FLAGS"))
777 flags = atoi (getenv ("LIBEV_FLAGS")); 855 flags = atoi (getenv ("LIBEV_FLAGS"));
778 856
779 if (!(flags & 0x0000ffff)) 857 if (!(flags & 0x0000ffffUL))
780 flags |= 0x0000ffff; 858 flags |= ev_recommended_backends ();
781 859
782 method = 0; 860 backend = 0;
861#if EV_USE_PORT
862 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
863#endif
783#if EV_USE_KQUEUE 864#if EV_USE_KQUEUE
784 if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags); 865 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
785#endif 866#endif
786#if EV_USE_EPOLL 867#if EV_USE_EPOLL
787 if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags); 868 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
788#endif 869#endif
789#if EV_USE_POLL 870#if EV_USE_POLL
790 if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags); 871 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
791#endif 872#endif
792#if EV_USE_SELECT 873#if EV_USE_SELECT
793 if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags); 874 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
794#endif 875#endif
795 876
796 ev_init (&sigev, sigcb); 877 ev_init (&sigev, sigcb);
797 ev_set_priority (&sigev, EV_MAXPRI); 878 ev_set_priority (&sigev, EV_MAXPRI);
798 } 879 }
799} 880}
800 881
801void 882static void
802loop_destroy (EV_P) 883loop_destroy (EV_P)
803{ 884{
804 int i; 885 int i;
805 886
887#if EV_USE_PORT
888 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
889#endif
806#if EV_USE_KQUEUE 890#if EV_USE_KQUEUE
807 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 891 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
808#endif 892#endif
809#if EV_USE_EPOLL 893#if EV_USE_EPOLL
810 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 894 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
811#endif 895#endif
812#if EV_USE_POLL 896#if EV_USE_POLL
813 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 897 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
814#endif 898#endif
815#if EV_USE_SELECT 899#if EV_USE_SELECT
816 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 900 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
817#endif 901#endif
818 902
819 for (i = NUMPRI; i--; ) 903 for (i = NUMPRI; i--; )
820 array_free (pending, [i]); 904 array_free (pending, [i]);
821 905
… …
827#endif 911#endif
828 array_free (idle, EMPTY0); 912 array_free (idle, EMPTY0);
829 array_free (prepare, EMPTY0); 913 array_free (prepare, EMPTY0);
830 array_free (check, EMPTY0); 914 array_free (check, EMPTY0);
831 915
832 method = 0; 916 backend = 0;
833} 917}
834 918
835static void 919static void
836loop_fork (EV_P) 920loop_fork (EV_P)
837{ 921{
922#if EV_USE_PORT
923 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
924#endif
925#if EV_USE_KQUEUE
926 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
927#endif
838#if EV_USE_EPOLL 928#if EV_USE_EPOLL
839 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 929 if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
840#endif
841#if EV_USE_KQUEUE
842 if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
843#endif 930#endif
844 931
845 if (ev_is_active (&sigev)) 932 if (ev_is_active (&sigev))
846 { 933 {
847 /* default loop */ 934 /* default loop */
… …
868 955
869 memset (loop, 0, sizeof (struct ev_loop)); 956 memset (loop, 0, sizeof (struct ev_loop));
870 957
871 loop_init (EV_A_ flags); 958 loop_init (EV_A_ flags);
872 959
873 if (ev_method (EV_A)) 960 if (ev_backend (EV_A))
874 return loop; 961 return loop;
875 962
876 return 0; 963 return 0;
877} 964}
878 965
… …
891 978
892#endif 979#endif
893 980
894#if EV_MULTIPLICITY 981#if EV_MULTIPLICITY
895struct ev_loop * 982struct ev_loop *
983ev_default_loop_init (unsigned int flags)
896#else 984#else
897int 985int
898#endif
899ev_default_loop (unsigned int flags) 986ev_default_loop (unsigned int flags)
987#endif
900{ 988{
901 if (sigpipe [0] == sigpipe [1]) 989 if (sigpipe [0] == sigpipe [1])
902 if (pipe (sigpipe)) 990 if (pipe (sigpipe))
903 return 0; 991 return 0;
904 992
905 if (!default_loop) 993 if (!ev_default_loop_ptr)
906 { 994 {
907#if EV_MULTIPLICITY 995#if EV_MULTIPLICITY
908 struct ev_loop *loop = default_loop = &default_loop_struct; 996 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
909#else 997#else
910 default_loop = 1; 998 ev_default_loop_ptr = 1;
911#endif 999#endif
912 1000
913 loop_init (EV_A_ flags); 1001 loop_init (EV_A_ flags);
914 1002
915 if (ev_method (EV_A)) 1003 if (ev_backend (EV_A))
916 { 1004 {
917 siginit (EV_A); 1005 siginit (EV_A);
918 1006
919#ifndef _WIN32 1007#ifndef _WIN32
920 ev_signal_init (&childev, childcb, SIGCHLD); 1008 ev_signal_init (&childev, childcb, SIGCHLD);
… …
922 ev_signal_start (EV_A_ &childev); 1010 ev_signal_start (EV_A_ &childev);
923 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1011 ev_unref (EV_A); /* child watcher should not keep loop alive */
924#endif 1012#endif
925 } 1013 }
926 else 1014 else
927 default_loop = 0; 1015 ev_default_loop_ptr = 0;
928 } 1016 }
929 1017
930 return default_loop; 1018 return ev_default_loop_ptr;
931} 1019}
932 1020
933void 1021void
934ev_default_destroy (void) 1022ev_default_destroy (void)
935{ 1023{
936#if EV_MULTIPLICITY 1024#if EV_MULTIPLICITY
937 struct ev_loop *loop = default_loop; 1025 struct ev_loop *loop = ev_default_loop_ptr;
938#endif 1026#endif
939 1027
940#ifndef _WIN32 1028#ifndef _WIN32
941 ev_ref (EV_A); /* child watcher */ 1029 ev_ref (EV_A); /* child watcher */
942 ev_signal_stop (EV_A_ &childev); 1030 ev_signal_stop (EV_A_ &childev);
… …
953 1041
954void 1042void
955ev_default_fork (void) 1043ev_default_fork (void)
956{ 1044{
957#if EV_MULTIPLICITY 1045#if EV_MULTIPLICITY
958 struct ev_loop *loop = default_loop; 1046 struct ev_loop *loop = ev_default_loop_ptr;
959#endif 1047#endif
960 1048
961 if (method) 1049 if (backend)
962 postfork = 1; 1050 postfork = 1;
963} 1051}
964 1052
965/*****************************************************************************/ 1053/*****************************************************************************/
966 1054
… …
974 return 1; 1062 return 1;
975 1063
976 return 0; 1064 return 0;
977} 1065}
978 1066
979static void 1067inline void
980call_pending (EV_P) 1068call_pending (EV_P)
981{ 1069{
982 int pri; 1070 int pri;
983 1071
984 for (pri = NUMPRI; pri--; ) 1072 for (pri = NUMPRI; pri--; )
985 while (pendingcnt [pri]) 1073 while (pendingcnt [pri])
986 { 1074 {
987 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1075 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
988 1076
989 if (p->w) 1077 if (expect_true (p->w))
990 { 1078 {
1079 assert (("non-pending watcher on pending list", p->w->pending));
1080
991 p->w->pending = 0; 1081 p->w->pending = 0;
992 EV_CB_INVOKE (p->w, p->events); 1082 EV_CB_INVOKE (p->w, p->events);
993 } 1083 }
994 } 1084 }
995} 1085}
996 1086
997static void 1087inline void
998timers_reify (EV_P) 1088timers_reify (EV_P)
999{ 1089{
1000 while (timercnt && ((WT)timers [0])->at <= mn_now) 1090 while (timercnt && ((WT)timers [0])->at <= mn_now)
1001 { 1091 {
1002 struct ev_timer *w = timers [0]; 1092 ev_timer *w = timers [0];
1003 1093
1004 assert (("inactive timer on timer heap detected", ev_is_active (w))); 1094 assert (("inactive timer on timer heap detected", ev_is_active (w)));
1005 1095
1006 /* first reschedule or stop timer */ 1096 /* first reschedule or stop timer */
1007 if (w->repeat) 1097 if (w->repeat)
… …
1020 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1110 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1021 } 1111 }
1022} 1112}
1023 1113
1024#if EV_PERIODICS 1114#if EV_PERIODICS
1025static void 1115inline void
1026periodics_reify (EV_P) 1116periodics_reify (EV_P)
1027{ 1117{
1028 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1118 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1029 { 1119 {
1030 struct ev_periodic *w = periodics [0]; 1120 ev_periodic *w = periodics [0];
1031 1121
1032 assert (("inactive timer on periodic heap detected", ev_is_active (w))); 1122 assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1033 1123
1034 /* first reschedule or stop timer */ 1124 /* first reschedule or stop timer */
1035 if (w->reschedule_cb) 1125 if (w->reschedule_cb)
… …
1057 int i; 1147 int i;
1058 1148
1059 /* adjust periodics after time jump */ 1149 /* adjust periodics after time jump */
1060 for (i = 0; i < periodiccnt; ++i) 1150 for (i = 0; i < periodiccnt; ++i)
1061 { 1151 {
1062 struct ev_periodic *w = periodics [i]; 1152 ev_periodic *w = periodics [i];
1063 1153
1064 if (w->reschedule_cb) 1154 if (w->reschedule_cb)
1065 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1155 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1066 else if (w->interval) 1156 else if (w->interval)
1067 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1157 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
… …
1089 ev_rt_now = ev_time (); 1179 ev_rt_now = ev_time ();
1090 return 1; 1180 return 1;
1091 } 1181 }
1092} 1182}
1093 1183
1094static void 1184inline void
1095time_update (EV_P) 1185time_update (EV_P)
1096{ 1186{
1097 int i; 1187 int i;
1098 1188
1099#if EV_USE_MONOTONIC 1189#if EV_USE_MONOTONIC
… …
1101 { 1191 {
1102 if (time_update_monotonic (EV_A)) 1192 if (time_update_monotonic (EV_A))
1103 { 1193 {
1104 ev_tstamp odiff = rtmn_diff; 1194 ev_tstamp odiff = rtmn_diff;
1105 1195
1106 for (i = 4; --i; ) /* loop a few times, before making important decisions */ 1196 /* loop a few times, before making important decisions.
1197 * on the choice of "4": one iteration isn't enough,
1198 * in case we get preempted during the calls to
1199 * ev_time and get_clock. a second call is almost guarenteed
1200 * to succeed in that case, though. and looping a few more times
1201 * doesn't hurt either as we only do this on time-jumps or
1202 * in the unlikely event of getting preempted here.
1203 */
1204 for (i = 4; --i; )
1107 { 1205 {
1108 rtmn_diff = ev_rt_now - mn_now; 1206 rtmn_diff = ev_rt_now - mn_now;
1109 1207
1110 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1208 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1111 return; /* all is well */ 1209 return; /* all is well */
… …
1157static int loop_done; 1255static int loop_done;
1158 1256
1159void 1257void
1160ev_loop (EV_P_ int flags) 1258ev_loop (EV_P_ int flags)
1161{ 1259{
1162 double block;
1163 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1260 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1261 ? EVUNLOOP_ONE
1262 : EVUNLOOP_CANCEL;
1164 1263
1165 while (activecnt) 1264 while (activecnt)
1166 { 1265 {
1167 /* queue check watchers (and execute them) */ 1266 /* queue check watchers (and execute them) */
1168 if (expect_false (preparecnt)) 1267 if (expect_false (preparecnt))
… …
1177 1276
1178 /* update fd-related kernel structures */ 1277 /* update fd-related kernel structures */
1179 fd_reify (EV_A); 1278 fd_reify (EV_A);
1180 1279
1181 /* calculate blocking time */ 1280 /* calculate blocking time */
1281 {
1282 double block;
1182 1283
1183 /* we only need this for !monotonic clock or timers, but as we basically 1284 if (flags & EVLOOP_NONBLOCK || idlecnt)
1184 always have timers, we just calculate it always */ 1285 block = 0.; /* do not block at all */
1286 else
1287 {
1288 /* update time to cancel out callback processing overhead */
1185#if EV_USE_MONOTONIC 1289#if EV_USE_MONOTONIC
1186 if (expect_true (have_monotonic)) 1290 if (expect_true (have_monotonic))
1187 time_update_monotonic (EV_A); 1291 time_update_monotonic (EV_A);
1188 else 1292 else
1189#endif 1293#endif
1190 { 1294 {
1191 ev_rt_now = ev_time (); 1295 ev_rt_now = ev_time ();
1192 mn_now = ev_rt_now; 1296 mn_now = ev_rt_now;
1193 } 1297 }
1194 1298
1195 if (flags & EVLOOP_NONBLOCK || idlecnt)
1196 block = 0.;
1197 else
1198 {
1199 block = MAX_BLOCKTIME; 1299 block = MAX_BLOCKTIME;
1200 1300
1201 if (timercnt) 1301 if (timercnt)
1202 { 1302 {
1203 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1303 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1204 if (block > to) block = to; 1304 if (block > to) block = to;
1205 } 1305 }
1206 1306
1207#if EV_PERIODICS 1307#if EV_PERIODICS
1208 if (periodiccnt) 1308 if (periodiccnt)
1209 { 1309 {
1210 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1310 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1211 if (block > to) block = to; 1311 if (block > to) block = to;
1212 } 1312 }
1213#endif 1313#endif
1214 1314
1215 if (block < 0.) block = 0.; 1315 if (expect_false (block < 0.)) block = 0.;
1216 } 1316 }
1217 1317
1218 method_poll (EV_A_ block); 1318 backend_poll (EV_A_ block);
1319 }
1219 1320
1220 /* update ev_rt_now, do magic */ 1321 /* update ev_rt_now, do magic */
1221 time_update (EV_A); 1322 time_update (EV_A);
1222 1323
1223 /* queue pending timers and reschedule them */ 1324 /* queue pending timers and reschedule them */
1224 timers_reify (EV_A); /* relative timers called last */ 1325 timers_reify (EV_A); /* relative timers called last */
1225#if EV_PERIODICS 1326#if EV_PERIODICS
1226 periodics_reify (EV_A); /* absolute timers called first */ 1327 periodics_reify (EV_A); /* absolute timers called first */
1227#endif 1328#endif
1228 1329
1229 /* queue idle watchers unless io or timers are pending */ 1330 /* queue idle watchers unless other events are pending */
1230 if (idlecnt && !any_pending (EV_A)) 1331 if (idlecnt && !any_pending (EV_A))
1231 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1332 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1232 1333
1233 /* queue check watchers, to be executed first */ 1334 /* queue check watchers, to be executed first */
1234 if (checkcnt) 1335 if (expect_false (checkcnt))
1235 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1336 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1236 1337
1237 call_pending (EV_A); 1338 call_pending (EV_A);
1238 1339
1239 if (loop_done) 1340 if (expect_false (loop_done))
1240 break; 1341 break;
1241 } 1342 }
1242 1343
1243 if (loop_done != 2) 1344 if (loop_done == EVUNLOOP_ONE)
1244 loop_done = 0; 1345 loop_done = EVUNLOOP_CANCEL;
1245} 1346}
1246 1347
1247void 1348void
1248ev_unloop (EV_P_ int how) 1349ev_unloop (EV_P_ int how)
1249{ 1350{
… …
1302} 1403}
1303 1404
1304/*****************************************************************************/ 1405/*****************************************************************************/
1305 1406
1306void 1407void
1307ev_io_start (EV_P_ struct ev_io *w) 1408ev_io_start (EV_P_ ev_io *w)
1308{ 1409{
1309 int fd = w->fd; 1410 int fd = w->fd;
1310 1411
1311 if (ev_is_active (w)) 1412 if (expect_false (ev_is_active (w)))
1312 return; 1413 return;
1313 1414
1314 assert (("ev_io_start called with negative fd", fd >= 0)); 1415 assert (("ev_io_start called with negative fd", fd >= 0));
1315 1416
1316 ev_start (EV_A_ (W)w, 1); 1417 ev_start (EV_A_ (W)w, 1);
… …
1319 1420
1320 fd_change (EV_A_ fd); 1421 fd_change (EV_A_ fd);
1321} 1422}
1322 1423
1323void 1424void
1324ev_io_stop (EV_P_ struct ev_io *w) 1425ev_io_stop (EV_P_ ev_io *w)
1325{ 1426{
1326 ev_clear_pending (EV_A_ (W)w); 1427 ev_clear_pending (EV_A_ (W)w);
1327 if (!ev_is_active (w)) 1428 if (expect_false (!ev_is_active (w)))
1328 return; 1429 return;
1329 1430
1330 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1431 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1331 1432
1332 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1433 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
… …
1334 1435
1335 fd_change (EV_A_ w->fd); 1436 fd_change (EV_A_ w->fd);
1336} 1437}
1337 1438
1338void 1439void
1339ev_timer_start (EV_P_ struct ev_timer *w) 1440ev_timer_start (EV_P_ ev_timer *w)
1340{ 1441{
1341 if (ev_is_active (w)) 1442 if (expect_false (ev_is_active (w)))
1342 return; 1443 return;
1343 1444
1344 ((WT)w)->at += mn_now; 1445 ((WT)w)->at += mn_now;
1345 1446
1346 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1447 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1347 1448
1348 ev_start (EV_A_ (W)w, ++timercnt); 1449 ev_start (EV_A_ (W)w, ++timercnt);
1349 array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2); 1450 array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1350 timers [timercnt - 1] = w; 1451 timers [timercnt - 1] = w;
1351 upheap ((WT *)timers, timercnt - 1); 1452 upheap ((WT *)timers, timercnt - 1);
1352 1453
1353 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1454 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1354} 1455}
1355 1456
1356void 1457void
1357ev_timer_stop (EV_P_ struct ev_timer *w) 1458ev_timer_stop (EV_P_ ev_timer *w)
1358{ 1459{
1359 ev_clear_pending (EV_A_ (W)w); 1460 ev_clear_pending (EV_A_ (W)w);
1360 if (!ev_is_active (w)) 1461 if (expect_false (!ev_is_active (w)))
1361 return; 1462 return;
1362 1463
1363 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1464 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1364 1465
1365 if (((W)w)->active < timercnt--) 1466 if (expect_true (((W)w)->active < timercnt--))
1366 { 1467 {
1367 timers [((W)w)->active - 1] = timers [timercnt]; 1468 timers [((W)w)->active - 1] = timers [timercnt];
1368 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1469 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1369 } 1470 }
1370 1471
… …
1372 1473
1373 ev_stop (EV_A_ (W)w); 1474 ev_stop (EV_A_ (W)w);
1374} 1475}
1375 1476
1376void 1477void
1377ev_timer_again (EV_P_ struct ev_timer *w) 1478ev_timer_again (EV_P_ ev_timer *w)
1378{ 1479{
1379 if (ev_is_active (w)) 1480 if (ev_is_active (w))
1380 { 1481 {
1381 if (w->repeat) 1482 if (w->repeat)
1382 { 1483 {
… …
1393 } 1494 }
1394} 1495}
1395 1496
1396#if EV_PERIODICS 1497#if EV_PERIODICS
1397void 1498void
1398ev_periodic_start (EV_P_ struct ev_periodic *w) 1499ev_periodic_start (EV_P_ ev_periodic *w)
1399{ 1500{
1400 if (ev_is_active (w)) 1501 if (expect_false (ev_is_active (w)))
1401 return; 1502 return;
1402 1503
1403 if (w->reschedule_cb) 1504 if (w->reschedule_cb)
1404 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1505 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1405 else if (w->interval) 1506 else if (w->interval)
… …
1408 /* this formula differs from the one in periodic_reify because we do not always round up */ 1509 /* this formula differs from the one in periodic_reify because we do not always round up */
1409 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; 1510 ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1410 } 1511 }
1411 1512
1412 ev_start (EV_A_ (W)w, ++periodiccnt); 1513 ev_start (EV_A_ (W)w, ++periodiccnt);
1413 array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); 1514 array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1414 periodics [periodiccnt - 1] = w; 1515 periodics [periodiccnt - 1] = w;
1415 upheap ((WT *)periodics, periodiccnt - 1); 1516 upheap ((WT *)periodics, periodiccnt - 1);
1416 1517
1417 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1518 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1418} 1519}
1419 1520
1420void 1521void
1421ev_periodic_stop (EV_P_ struct ev_periodic *w) 1522ev_periodic_stop (EV_P_ ev_periodic *w)
1422{ 1523{
1423 ev_clear_pending (EV_A_ (W)w); 1524 ev_clear_pending (EV_A_ (W)w);
1424 if (!ev_is_active (w)) 1525 if (expect_false (!ev_is_active (w)))
1425 return; 1526 return;
1426 1527
1427 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1528 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1428 1529
1429 if (((W)w)->active < periodiccnt--) 1530 if (expect_true (((W)w)->active < periodiccnt--))
1430 { 1531 {
1431 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1532 periodics [((W)w)->active - 1] = periodics [periodiccnt];
1432 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1533 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1433 } 1534 }
1434 1535
1435 ev_stop (EV_A_ (W)w); 1536 ev_stop (EV_A_ (W)w);
1436} 1537}
1437 1538
1438void 1539void
1439ev_periodic_again (EV_P_ struct ev_periodic *w) 1540ev_periodic_again (EV_P_ ev_periodic *w)
1440{ 1541{
1441 /* TODO: use adjustheap and recalculation */ 1542 /* TODO: use adjustheap and recalculation */
1442 ev_periodic_stop (EV_A_ w); 1543 ev_periodic_stop (EV_A_ w);
1443 ev_periodic_start (EV_A_ w); 1544 ev_periodic_start (EV_A_ w);
1444} 1545}
1445#endif 1546#endif
1446 1547
1447void 1548void
1448ev_idle_start (EV_P_ struct ev_idle *w) 1549ev_idle_start (EV_P_ ev_idle *w)
1449{ 1550{
1450 if (ev_is_active (w)) 1551 if (expect_false (ev_is_active (w)))
1451 return; 1552 return;
1452 1553
1453 ev_start (EV_A_ (W)w, ++idlecnt); 1554 ev_start (EV_A_ (W)w, ++idlecnt);
1454 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2); 1555 array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1455 idles [idlecnt - 1] = w; 1556 idles [idlecnt - 1] = w;
1456} 1557}
1457 1558
1458void 1559void
1459ev_idle_stop (EV_P_ struct ev_idle *w) 1560ev_idle_stop (EV_P_ ev_idle *w)
1460{ 1561{
1461 ev_clear_pending (EV_A_ (W)w); 1562 ev_clear_pending (EV_A_ (W)w);
1462 if (!ev_is_active (w)) 1563 if (expect_false (!ev_is_active (w)))
1463 return; 1564 return;
1464 1565
1566 {
1567 int active = ((W)w)->active;
1465 idles [((W)w)->active - 1] = idles [--idlecnt]; 1568 idles [active - 1] = idles [--idlecnt];
1569 ((W)idles [active - 1])->active = active;
1570 }
1571
1466 ev_stop (EV_A_ (W)w); 1572 ev_stop (EV_A_ (W)w);
1467} 1573}
1468 1574
1469void 1575void
1470ev_prepare_start (EV_P_ struct ev_prepare *w) 1576ev_prepare_start (EV_P_ ev_prepare *w)
1471{ 1577{
1472 if (ev_is_active (w)) 1578 if (expect_false (ev_is_active (w)))
1473 return; 1579 return;
1474 1580
1475 ev_start (EV_A_ (W)w, ++preparecnt); 1581 ev_start (EV_A_ (W)w, ++preparecnt);
1476 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 1582 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1477 prepares [preparecnt - 1] = w; 1583 prepares [preparecnt - 1] = w;
1478} 1584}
1479 1585
1480void 1586void
1481ev_prepare_stop (EV_P_ struct ev_prepare *w) 1587ev_prepare_stop (EV_P_ ev_prepare *w)
1482{ 1588{
1483 ev_clear_pending (EV_A_ (W)w); 1589 ev_clear_pending (EV_A_ (W)w);
1484 if (!ev_is_active (w)) 1590 if (expect_false (!ev_is_active (w)))
1485 return; 1591 return;
1486 1592
1593 {
1594 int active = ((W)w)->active;
1487 prepares [((W)w)->active - 1] = prepares [--preparecnt]; 1595 prepares [active - 1] = prepares [--preparecnt];
1596 ((W)prepares [active - 1])->active = active;
1597 }
1598
1488 ev_stop (EV_A_ (W)w); 1599 ev_stop (EV_A_ (W)w);
1489} 1600}
1490 1601
1491void 1602void
1492ev_check_start (EV_P_ struct ev_check *w) 1603ev_check_start (EV_P_ ev_check *w)
1493{ 1604{
1494 if (ev_is_active (w)) 1605 if (expect_false (ev_is_active (w)))
1495 return; 1606 return;
1496 1607
1497 ev_start (EV_A_ (W)w, ++checkcnt); 1608 ev_start (EV_A_ (W)w, ++checkcnt);
1498 array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2); 1609 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1499 checks [checkcnt - 1] = w; 1610 checks [checkcnt - 1] = w;
1500} 1611}
1501 1612
1502void 1613void
1503ev_check_stop (EV_P_ struct ev_check *w) 1614ev_check_stop (EV_P_ ev_check *w)
1504{ 1615{
1505 ev_clear_pending (EV_A_ (W)w); 1616 ev_clear_pending (EV_A_ (W)w);
1506 if (!ev_is_active (w)) 1617 if (expect_false (!ev_is_active (w)))
1507 return; 1618 return;
1508 1619
1620 {
1621 int active = ((W)w)->active;
1509 checks [((W)w)->active - 1] = checks [--checkcnt]; 1622 checks [active - 1] = checks [--checkcnt];
1623 ((W)checks [active - 1])->active = active;
1624 }
1625
1510 ev_stop (EV_A_ (W)w); 1626 ev_stop (EV_A_ (W)w);
1511} 1627}
1512 1628
1513#ifndef SA_RESTART 1629#ifndef SA_RESTART
1514# define SA_RESTART 0 1630# define SA_RESTART 0
1515#endif 1631#endif
1516 1632
1517void 1633void
1518ev_signal_start (EV_P_ struct ev_signal *w) 1634ev_signal_start (EV_P_ ev_signal *w)
1519{ 1635{
1520#if EV_MULTIPLICITY 1636#if EV_MULTIPLICITY
1521 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1637 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1522#endif 1638#endif
1523 if (ev_is_active (w)) 1639 if (expect_false (ev_is_active (w)))
1524 return; 1640 return;
1525 1641
1526 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1642 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1527 1643
1528 ev_start (EV_A_ (W)w, 1); 1644 ev_start (EV_A_ (W)w, 1);
… …
1542#endif 1658#endif
1543 } 1659 }
1544} 1660}
1545 1661
1546void 1662void
1547ev_signal_stop (EV_P_ struct ev_signal *w) 1663ev_signal_stop (EV_P_ ev_signal *w)
1548{ 1664{
1549 ev_clear_pending (EV_A_ (W)w); 1665 ev_clear_pending (EV_A_ (W)w);
1550 if (!ev_is_active (w)) 1666 if (expect_false (!ev_is_active (w)))
1551 return; 1667 return;
1552 1668
1553 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1669 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1554 ev_stop (EV_A_ (W)w); 1670 ev_stop (EV_A_ (W)w);
1555 1671
1556 if (!signals [w->signum - 1].head) 1672 if (!signals [w->signum - 1].head)
1557 signal (w->signum, SIG_DFL); 1673 signal (w->signum, SIG_DFL);
1558} 1674}
1559 1675
1560void 1676void
1561ev_child_start (EV_P_ struct ev_child *w) 1677ev_child_start (EV_P_ ev_child *w)
1562{ 1678{
1563#if EV_MULTIPLICITY 1679#if EV_MULTIPLICITY
1564 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1680 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1565#endif 1681#endif
1566 if (ev_is_active (w)) 1682 if (expect_false (ev_is_active (w)))
1567 return; 1683 return;
1568 1684
1569 ev_start (EV_A_ (W)w, 1); 1685 ev_start (EV_A_ (W)w, 1);
1570 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1686 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1571} 1687}
1572 1688
1573void 1689void
1574ev_child_stop (EV_P_ struct ev_child *w) 1690ev_child_stop (EV_P_ ev_child *w)
1575{ 1691{
1576 ev_clear_pending (EV_A_ (W)w); 1692 ev_clear_pending (EV_A_ (W)w);
1577 if (!ev_is_active (w)) 1693 if (expect_false (!ev_is_active (w)))
1578 return; 1694 return;
1579 1695
1580 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1696 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1581 ev_stop (EV_A_ (W)w); 1697 ev_stop (EV_A_ (W)w);
1582} 1698}
1583 1699
1700#if EV_MULTIPLICITY
1701void
1702ev_embed_sweep (EV_P_ ev_embed *w)
1703{
1704 ev_loop (w->loop, EVLOOP_NONBLOCK);
1705}
1706
1707static void
1708embed_cb (EV_P_ ev_io *io, int revents)
1709{
1710 ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
1711
1712 if (ev_cb (w))
1713 ev_feed_event (EV_A_ (W)w, EV_EMBED);
1714 else
1715 ev_embed_sweep (loop, w);
1716}
1717
1718void
1719ev_embed_start (EV_P_ ev_embed *w)
1720{
1721 if (expect_false (ev_is_active (w)))
1722 return;
1723
1724 {
1725 struct ev_loop *loop = w->loop;
1726 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1727 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1728 }
1729
1730 ev_set_priority (&w->io, ev_priority (w));
1731 ev_io_start (EV_A_ &w->io);
1732 ev_start (EV_A_ (W)w, 1);
1733}
1734
1735void
1736ev_embed_stop (EV_P_ ev_embed *w)
1737{
1738 ev_clear_pending (EV_A_ (W)w);
1739 if (expect_false (!ev_is_active (w)))
1740 return;
1741
1742 ev_io_stop (EV_A_ &w->io);
1743 ev_stop (EV_A_ (W)w);
1744}
1745#endif
1746
1584/*****************************************************************************/ 1747/*****************************************************************************/
1585 1748
1586struct ev_once 1749struct ev_once
1587{ 1750{
1588 struct ev_io io; 1751 ev_io io;
1589 struct ev_timer to; 1752 ev_timer to;
1590 void (*cb)(int revents, void *arg); 1753 void (*cb)(int revents, void *arg);
1591 void *arg; 1754 void *arg;
1592}; 1755};
1593 1756
1594static void 1757static void
… …
1603 1766
1604 cb (revents, arg); 1767 cb (revents, arg);
1605} 1768}
1606 1769
1607static void 1770static void
1608once_cb_io (EV_P_ struct ev_io *w, int revents) 1771once_cb_io (EV_P_ ev_io *w, int revents)
1609{ 1772{
1610 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 1773 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1611} 1774}
1612 1775
1613static void 1776static void
1614once_cb_to (EV_P_ struct ev_timer *w, int revents) 1777once_cb_to (EV_P_ ev_timer *w, int revents)
1615{ 1778{
1616 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 1779 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1617} 1780}
1618 1781
1619void 1782void
1620ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 1783ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1621{ 1784{
1622 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 1785 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1623 1786
1624 if (!once) 1787 if (expect_false (!once))
1788 {
1625 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 1789 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1626 else 1790 return;
1627 { 1791 }
1792
1628 once->cb = cb; 1793 once->cb = cb;
1629 once->arg = arg; 1794 once->arg = arg;
1630 1795
1631 ev_init (&once->io, once_cb_io); 1796 ev_init (&once->io, once_cb_io);
1632 if (fd >= 0) 1797 if (fd >= 0)
1633 { 1798 {
1634 ev_io_set (&once->io, fd, events); 1799 ev_io_set (&once->io, fd, events);
1635 ev_io_start (EV_A_ &once->io); 1800 ev_io_start (EV_A_ &once->io);
1636 } 1801 }
1637 1802
1638 ev_init (&once->to, once_cb_to); 1803 ev_init (&once->to, once_cb_to);
1639 if (timeout >= 0.) 1804 if (timeout >= 0.)
1640 { 1805 {
1641 ev_timer_set (&once->to, timeout, 0.); 1806 ev_timer_set (&once->to, timeout, 0.);
1642 ev_timer_start (EV_A_ &once->to); 1807 ev_timer_start (EV_A_ &once->to);
1643 }
1644 } 1808 }
1645} 1809}
1646 1810
1647#ifdef __cplusplus 1811#ifdef __cplusplus
1648} 1812}

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines