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Comparing libev/ev.c (file contents):
Revision 1.115 by root, Wed Nov 14 04:53:21 2007 UTC vs.
Revision 1.135 by root, Sat Nov 24 06:23:27 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
… …
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 }
401
402 if (expect_false (!w_->cb))
403 return;
369 404
370 w_->pending = ++pendingcnt [ABSPRI (w_)]; 405 w_->pending = ++pendingcnt [ABSPRI (w_)];
371 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2); 406 array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
372 pendings [ABSPRI (w_)][w_->pending - 1].w = w_; 407 pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
373 pendings [ABSPRI (w_)][w_->pending - 1].events = revents; 408 pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
… …
403 fd_event (EV_A_ fd, revents); 438 fd_event (EV_A_ fd, revents);
404} 439}
405 440
406/*****************************************************************************/ 441/*****************************************************************************/
407 442
408static void 443inline void
409fd_reify (EV_P) 444fd_reify (EV_P)
410{ 445{
411 int i; 446 int i;
412 447
413 for (i = 0; i < fdchangecnt; ++i) 448 for (i = 0; i < fdchangecnt; ++i)
… …
430 } 465 }
431#endif 466#endif
432 467
433 anfd->reify = 0; 468 anfd->reify = 0;
434 469
435 method_modify (EV_A_ fd, anfd->events, events); 470 backend_modify (EV_A_ fd, anfd->events, events);
436 anfd->events = events; 471 anfd->events = events;
437 } 472 }
438 473
439 fdchangecnt = 0; 474 fdchangecnt = 0;
440} 475}
441 476
442static void 477static void
443fd_change (EV_P_ int fd) 478fd_change (EV_P_ int fd)
444{ 479{
445 if (anfds [fd].reify) 480 if (expect_false (anfds [fd].reify))
446 return; 481 return;
447 482
448 anfds [fd].reify = 1; 483 anfds [fd].reify = 1;
449 484
450 ++fdchangecnt; 485 ++fdchangecnt;
… …
462 ev_io_stop (EV_A_ w); 497 ev_io_stop (EV_A_ w);
463 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); 498 ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
464 } 499 }
465} 500}
466 501
467static int 502inline int
468fd_valid (int fd) 503fd_valid (int fd)
469{ 504{
470#ifdef _WIN32 505#ifdef _WIN32
471 return _get_osfhandle (fd) != -1; 506 return _get_osfhandle (fd) != -1;
472#else 507#else
… …
498 fd_kill (EV_A_ fd); 533 fd_kill (EV_A_ fd);
499 return; 534 return;
500 } 535 }
501} 536}
502 537
503/* usually called after fork if method needs to re-arm all fds from scratch */ 538/* usually called after fork if backend needs to re-arm all fds from scratch */
504static void 539static void
505fd_rearm_all (EV_P) 540fd_rearm_all (EV_P)
506{ 541{
507 int fd; 542 int fd;
508 543
… …
614ev_feed_signal_event (EV_P_ int signum) 649ev_feed_signal_event (EV_P_ int signum)
615{ 650{
616 WL w; 651 WL w;
617 652
618#if EV_MULTIPLICITY 653#if EV_MULTIPLICITY
619 assert (("feeding signal events is only supported in the default loop", loop == default_loop)); 654 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
620#endif 655#endif
621 656
622 --signum; 657 --signum;
623 658
624 if (signum < 0 || signum >= signalmax) 659 if (signum < 0 || signum >= signalmax)
… …
641 for (signum = signalmax; signum--; ) 676 for (signum = signalmax; signum--; )
642 if (signals [signum].gotsig) 677 if (signals [signum].gotsig)
643 ev_feed_signal_event (EV_A_ signum + 1); 678 ev_feed_signal_event (EV_A_ signum + 1);
644} 679}
645 680
646inline void 681static void
647fd_intern (int fd) 682fd_intern (int fd)
648{ 683{
649#ifdef _WIN32 684#ifdef _WIN32
650 int arg = 1; 685 int arg = 1;
651 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 686 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
… …
699 int pid, status; 734 int pid, status;
700 735
701 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) 736 if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
702 { 737 {
703 /* make sure we are called again until all childs have been reaped */ 738 /* make sure we are called again until all childs have been reaped */
739 /* 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); 740 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
705 741
706 child_reap (EV_A_ sw, pid, pid, status); 742 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 */ 743 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
708 } 744 }
709} 745}
710 746
711#endif 747#endif
712 748
713/*****************************************************************************/ 749/*****************************************************************************/
714 750
751#if EV_USE_PORT
752# include "ev_port.c"
753#endif
715#if EV_USE_KQUEUE 754#if EV_USE_KQUEUE
716# include "ev_kqueue.c" 755# include "ev_kqueue.c"
717#endif 756#endif
718#if EV_USE_EPOLL 757#if EV_USE_EPOLL
719# include "ev_epoll.c" 758# include "ev_epoll.c"
… …
748 || getgid () != getegid (); 787 || getgid () != getegid ();
749#endif 788#endif
750} 789}
751 790
752unsigned int 791unsigned int
753ev_method (EV_P) 792ev_supported_backends (void)
754{ 793{
755 return method; 794 unsigned int flags = 0;
795
796 if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
797 if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
798 if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
799 if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
800 if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
801
802 return flags;
803}
804
805unsigned int
806ev_recommended_backends (void)
807{
808 unsigned int flags = ev_supported_backends ();
809
810#ifndef __NetBSD__
811 /* kqueue is borked on everything but netbsd apparently */
812 /* it usually doesn't work correctly on anything but sockets and pipes */
813 flags &= ~EVBACKEND_KQUEUE;
814#endif
815#ifdef __APPLE__
816 // flags &= ~EVBACKEND_KQUEUE; for documentation
817 flags &= ~EVBACKEND_POLL;
818#endif
819
820 return flags;
821}
822
823unsigned int
824ev_embeddable_backends (void)
825{
826 return EVBACKEND_EPOLL
827 | EVBACKEND_KQUEUE
828 | EVBACKEND_PORT;
829}
830
831unsigned int
832ev_backend (EV_P)
833{
834 return backend;
756} 835}
757 836
758static void 837static void
759loop_init (EV_P_ unsigned int flags) 838loop_init (EV_P_ unsigned int flags)
760{ 839{
761 if (!method) 840 if (!backend)
762 { 841 {
763#if EV_USE_MONOTONIC 842#if EV_USE_MONOTONIC
764 { 843 {
765 struct timespec ts; 844 struct timespec ts;
766 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 845 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
… …
771 ev_rt_now = ev_time (); 850 ev_rt_now = ev_time ();
772 mn_now = get_clock (); 851 mn_now = get_clock ();
773 now_floor = mn_now; 852 now_floor = mn_now;
774 rtmn_diff = ev_rt_now - mn_now; 853 rtmn_diff = ev_rt_now - mn_now;
775 854
776 if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS")) 855 if (!(flags & EVFLAG_NOENV)
856 && !enable_secure ()
857 && getenv ("LIBEV_FLAGS"))
777 flags = atoi (getenv ("LIBEV_FLAGS")); 858 flags = atoi (getenv ("LIBEV_FLAGS"));
778 859
779 if (!(flags & 0x0000ffff)) 860 if (!(flags & 0x0000ffffUL))
780 flags |= 0x0000ffff; 861 flags |= ev_recommended_backends ();
781 862
782 method = 0; 863 backend = 0;
864#if EV_USE_PORT
865 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
866#endif
783#if EV_USE_KQUEUE 867#if EV_USE_KQUEUE
784 if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags); 868 if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
785#endif 869#endif
786#if EV_USE_EPOLL 870#if EV_USE_EPOLL
787 if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags); 871 if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
788#endif 872#endif
789#if EV_USE_POLL 873#if EV_USE_POLL
790 if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags); 874 if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
791#endif 875#endif
792#if EV_USE_SELECT 876#if EV_USE_SELECT
793 if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags); 877 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
794#endif 878#endif
795 879
796 ev_init (&sigev, sigcb); 880 ev_init (&sigev, sigcb);
797 ev_set_priority (&sigev, EV_MAXPRI); 881 ev_set_priority (&sigev, EV_MAXPRI);
798 } 882 }
799} 883}
800 884
801void 885static void
802loop_destroy (EV_P) 886loop_destroy (EV_P)
803{ 887{
804 int i; 888 int i;
805 889
890#if EV_USE_PORT
891 if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
892#endif
806#if EV_USE_KQUEUE 893#if EV_USE_KQUEUE
807 if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); 894 if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
808#endif 895#endif
809#if EV_USE_EPOLL 896#if EV_USE_EPOLL
810 if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); 897 if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
811#endif 898#endif
812#if EV_USE_POLL 899#if EV_USE_POLL
813 if (method == EVMETHOD_POLL ) poll_destroy (EV_A); 900 if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
814#endif 901#endif
815#if EV_USE_SELECT 902#if EV_USE_SELECT
816 if (method == EVMETHOD_SELECT) select_destroy (EV_A); 903 if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
817#endif 904#endif
818 905
819 for (i = NUMPRI; i--; ) 906 for (i = NUMPRI; i--; )
820 array_free (pending, [i]); 907 array_free (pending, [i]);
821 908
… …
827#endif 914#endif
828 array_free (idle, EMPTY0); 915 array_free (idle, EMPTY0);
829 array_free (prepare, EMPTY0); 916 array_free (prepare, EMPTY0);
830 array_free (check, EMPTY0); 917 array_free (check, EMPTY0);
831 918
832 method = 0; 919 backend = 0;
833} 920}
834 921
835static void 922static void
836loop_fork (EV_P) 923loop_fork (EV_P)
837{ 924{
925#if EV_USE_PORT
926 if (backend == EVBACKEND_PORT ) port_fork (EV_A);
927#endif
928#if EV_USE_KQUEUE
929 if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
930#endif
838#if EV_USE_EPOLL 931#if EV_USE_EPOLL
839 if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); 932 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 933#endif
844 934
845 if (ev_is_active (&sigev)) 935 if (ev_is_active (&sigev))
846 { 936 {
847 /* default loop */ 937 /* default loop */
… …
868 958
869 memset (loop, 0, sizeof (struct ev_loop)); 959 memset (loop, 0, sizeof (struct ev_loop));
870 960
871 loop_init (EV_A_ flags); 961 loop_init (EV_A_ flags);
872 962
873 if (ev_method (EV_A)) 963 if (ev_backend (EV_A))
874 return loop; 964 return loop;
875 965
876 return 0; 966 return 0;
877} 967}
878 968
… …
891 981
892#endif 982#endif
893 983
894#if EV_MULTIPLICITY 984#if EV_MULTIPLICITY
895struct ev_loop * 985struct ev_loop *
986ev_default_loop_init (unsigned int flags)
896#else 987#else
897int 988int
898#endif
899ev_default_loop (unsigned int flags) 989ev_default_loop (unsigned int flags)
990#endif
900{ 991{
901 if (sigpipe [0] == sigpipe [1]) 992 if (sigpipe [0] == sigpipe [1])
902 if (pipe (sigpipe)) 993 if (pipe (sigpipe))
903 return 0; 994 return 0;
904 995
905 if (!default_loop) 996 if (!ev_default_loop_ptr)
906 { 997 {
907#if EV_MULTIPLICITY 998#if EV_MULTIPLICITY
908 struct ev_loop *loop = default_loop = &default_loop_struct; 999 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
909#else 1000#else
910 default_loop = 1; 1001 ev_default_loop_ptr = 1;
911#endif 1002#endif
912 1003
913 loop_init (EV_A_ flags); 1004 loop_init (EV_A_ flags);
914 1005
915 if (ev_method (EV_A)) 1006 if (ev_backend (EV_A))
916 { 1007 {
917 siginit (EV_A); 1008 siginit (EV_A);
918 1009
919#ifndef _WIN32 1010#ifndef _WIN32
920 ev_signal_init (&childev, childcb, SIGCHLD); 1011 ev_signal_init (&childev, childcb, SIGCHLD);
… …
922 ev_signal_start (EV_A_ &childev); 1013 ev_signal_start (EV_A_ &childev);
923 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1014 ev_unref (EV_A); /* child watcher should not keep loop alive */
924#endif 1015#endif
925 } 1016 }
926 else 1017 else
927 default_loop = 0; 1018 ev_default_loop_ptr = 0;
928 } 1019 }
929 1020
930 return default_loop; 1021 return ev_default_loop_ptr;
931} 1022}
932 1023
933void 1024void
934ev_default_destroy (void) 1025ev_default_destroy (void)
935{ 1026{
936#if EV_MULTIPLICITY 1027#if EV_MULTIPLICITY
937 struct ev_loop *loop = default_loop; 1028 struct ev_loop *loop = ev_default_loop_ptr;
938#endif 1029#endif
939 1030
940#ifndef _WIN32 1031#ifndef _WIN32
941 ev_ref (EV_A); /* child watcher */ 1032 ev_ref (EV_A); /* child watcher */
942 ev_signal_stop (EV_A_ &childev); 1033 ev_signal_stop (EV_A_ &childev);
… …
953 1044
954void 1045void
955ev_default_fork (void) 1046ev_default_fork (void)
956{ 1047{
957#if EV_MULTIPLICITY 1048#if EV_MULTIPLICITY
958 struct ev_loop *loop = default_loop; 1049 struct ev_loop *loop = ev_default_loop_ptr;
959#endif 1050#endif
960 1051
961 if (method) 1052 if (backend)
962 postfork = 1; 1053 postfork = 1;
963} 1054}
964 1055
965/*****************************************************************************/ 1056/*****************************************************************************/
966 1057
… …
974 return 1; 1065 return 1;
975 1066
976 return 0; 1067 return 0;
977} 1068}
978 1069
979static void 1070inline void
980call_pending (EV_P) 1071call_pending (EV_P)
981{ 1072{
982 int pri; 1073 int pri;
983 1074
984 for (pri = NUMPRI; pri--; ) 1075 for (pri = NUMPRI; pri--; )
985 while (pendingcnt [pri]) 1076 while (pendingcnt [pri])
986 { 1077 {
987 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1078 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
988 1079
989 if (p->w) 1080 if (expect_true (p->w))
990 { 1081 {
991 p->w->pending = 0; 1082 p->w->pending = 0;
992 EV_CB_INVOKE (p->w, p->events); 1083 EV_CB_INVOKE (p->w, p->events);
993 } 1084 }
994 } 1085 }
995} 1086}
996 1087
997static void 1088inline void
998timers_reify (EV_P) 1089timers_reify (EV_P)
999{ 1090{
1000 while (timercnt && ((WT)timers [0])->at <= mn_now) 1091 while (timercnt && ((WT)timers [0])->at <= mn_now)
1001 { 1092 {
1002 struct ev_timer *w = timers [0]; 1093 struct ev_timer *w = timers [0];
… …
1020 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1111 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1021 } 1112 }
1022} 1113}
1023 1114
1024#if EV_PERIODICS 1115#if EV_PERIODICS
1025static void 1116inline void
1026periodics_reify (EV_P) 1117periodics_reify (EV_P)
1027{ 1118{
1028 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) 1119 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1029 { 1120 {
1030 struct ev_periodic *w = periodics [0]; 1121 struct ev_periodic *w = periodics [0];
… …
1089 ev_rt_now = ev_time (); 1180 ev_rt_now = ev_time ();
1090 return 1; 1181 return 1;
1091 } 1182 }
1092} 1183}
1093 1184
1094static void 1185inline void
1095time_update (EV_P) 1186time_update (EV_P)
1096{ 1187{
1097 int i; 1188 int i;
1098 1189
1099#if EV_USE_MONOTONIC 1190#if EV_USE_MONOTONIC
… …
1157static int loop_done; 1248static int loop_done;
1158 1249
1159void 1250void
1160ev_loop (EV_P_ int flags) 1251ev_loop (EV_P_ int flags)
1161{ 1252{
1162 double block;
1163 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; 1253 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1254 ? EVUNLOOP_ONE
1255 : EVUNLOOP_CANCEL;
1164 1256
1165 while (activecnt) 1257 while (activecnt)
1166 { 1258 {
1167 /* queue check watchers (and execute them) */ 1259 /* queue check watchers (and execute them) */
1168 if (expect_false (preparecnt)) 1260 if (expect_false (preparecnt))
… …
1177 1269
1178 /* update fd-related kernel structures */ 1270 /* update fd-related kernel structures */
1179 fd_reify (EV_A); 1271 fd_reify (EV_A);
1180 1272
1181 /* calculate blocking time */ 1273 /* calculate blocking time */
1274 {
1275 double block;
1182 1276
1183 /* we only need this for !monotonic clock or timers, but as we basically 1277 if (flags & EVLOOP_NONBLOCK || idlecnt)
1184 always have timers, we just calculate it always */ 1278 block = 0.; /* do not block at all */
1279 else
1280 {
1281 /* update time to cancel out callback processing overhead */
1185#if EV_USE_MONOTONIC 1282#if EV_USE_MONOTONIC
1186 if (expect_true (have_monotonic)) 1283 if (expect_true (have_monotonic))
1187 time_update_monotonic (EV_A); 1284 time_update_monotonic (EV_A);
1188 else 1285 else
1189#endif 1286#endif
1190 { 1287 {
1191 ev_rt_now = ev_time (); 1288 ev_rt_now = ev_time ();
1192 mn_now = ev_rt_now; 1289 mn_now = ev_rt_now;
1193 } 1290 }
1194 1291
1195 if (flags & EVLOOP_NONBLOCK || idlecnt)
1196 block = 0.;
1197 else
1198 {
1199 block = MAX_BLOCKTIME; 1292 block = MAX_BLOCKTIME;
1200 1293
1201 if (timercnt) 1294 if (timercnt)
1202 { 1295 {
1203 ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; 1296 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1204 if (block > to) block = to; 1297 if (block > to) block = to;
1205 } 1298 }
1206 1299
1207#if EV_PERIODICS 1300#if EV_PERIODICS
1208 if (periodiccnt) 1301 if (periodiccnt)
1209 { 1302 {
1210 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; 1303 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1211 if (block > to) block = to; 1304 if (block > to) block = to;
1212 } 1305 }
1213#endif 1306#endif
1214 1307
1215 if (block < 0.) block = 0.; 1308 if (expect_false (block < 0.)) block = 0.;
1216 } 1309 }
1217 1310
1218 method_poll (EV_A_ block); 1311 backend_poll (EV_A_ block);
1312 }
1219 1313
1220 /* update ev_rt_now, do magic */ 1314 /* update ev_rt_now, do magic */
1221 time_update (EV_A); 1315 time_update (EV_A);
1222 1316
1223 /* queue pending timers and reschedule them */ 1317 /* queue pending timers and reschedule them */
… …
1229 /* queue idle watchers unless io or timers are pending */ 1323 /* queue idle watchers unless io or timers are pending */
1230 if (idlecnt && !any_pending (EV_A)) 1324 if (idlecnt && !any_pending (EV_A))
1231 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); 1325 queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1232 1326
1233 /* queue check watchers, to be executed first */ 1327 /* queue check watchers, to be executed first */
1234 if (checkcnt) 1328 if (expect_false (checkcnt))
1235 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1329 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1236 1330
1237 call_pending (EV_A); 1331 call_pending (EV_A);
1238 1332
1239 if (loop_done) 1333 if (expect_false (loop_done))
1240 break; 1334 break;
1241 } 1335 }
1242 1336
1243 if (loop_done != 2) 1337 if (loop_done == EVUNLOOP_ONE)
1244 loop_done = 0; 1338 loop_done = EVUNLOOP_CANCEL;
1245} 1339}
1246 1340
1247void 1341void
1248ev_unloop (EV_P_ int how) 1342ev_unloop (EV_P_ int how)
1249{ 1343{
… …
1306void 1400void
1307ev_io_start (EV_P_ struct ev_io *w) 1401ev_io_start (EV_P_ struct ev_io *w)
1308{ 1402{
1309 int fd = w->fd; 1403 int fd = w->fd;
1310 1404
1311 if (ev_is_active (w)) 1405 if (expect_false (ev_is_active (w)))
1312 return; 1406 return;
1313 1407
1314 assert (("ev_io_start called with negative fd", fd >= 0)); 1408 assert (("ev_io_start called with negative fd", fd >= 0));
1315 1409
1316 ev_start (EV_A_ (W)w, 1); 1410 ev_start (EV_A_ (W)w, 1);
… …
1322 1416
1323void 1417void
1324ev_io_stop (EV_P_ struct ev_io *w) 1418ev_io_stop (EV_P_ struct ev_io *w)
1325{ 1419{
1326 ev_clear_pending (EV_A_ (W)w); 1420 ev_clear_pending (EV_A_ (W)w);
1327 if (!ev_is_active (w)) 1421 if (expect_false (!ev_is_active (w)))
1328 return; 1422 return;
1329 1423
1330 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 1424 assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1331 1425
1332 wlist_del ((WL *)&anfds[w->fd].head, (WL)w); 1426 wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
… …
1336} 1430}
1337 1431
1338void 1432void
1339ev_timer_start (EV_P_ struct ev_timer *w) 1433ev_timer_start (EV_P_ struct ev_timer *w)
1340{ 1434{
1341 if (ev_is_active (w)) 1435 if (expect_false (ev_is_active (w)))
1342 return; 1436 return;
1343 1437
1344 ((WT)w)->at += mn_now; 1438 ((WT)w)->at += mn_now;
1345 1439
1346 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1440 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
… …
1355 1449
1356void 1450void
1357ev_timer_stop (EV_P_ struct ev_timer *w) 1451ev_timer_stop (EV_P_ struct ev_timer *w)
1358{ 1452{
1359 ev_clear_pending (EV_A_ (W)w); 1453 ev_clear_pending (EV_A_ (W)w);
1360 if (!ev_is_active (w)) 1454 if (expect_false (!ev_is_active (w)))
1361 return; 1455 return;
1362 1456
1363 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); 1457 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1364 1458
1365 if (((W)w)->active < timercnt--) 1459 if (expect_true (((W)w)->active < timercnt--))
1366 { 1460 {
1367 timers [((W)w)->active - 1] = timers [timercnt]; 1461 timers [((W)w)->active - 1] = timers [timercnt];
1368 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); 1462 adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1369 } 1463 }
1370 1464
… …
1395 1489
1396#if EV_PERIODICS 1490#if EV_PERIODICS
1397void 1491void
1398ev_periodic_start (EV_P_ struct ev_periodic *w) 1492ev_periodic_start (EV_P_ struct ev_periodic *w)
1399{ 1493{
1400 if (ev_is_active (w)) 1494 if (expect_false (ev_is_active (w)))
1401 return; 1495 return;
1402 1496
1403 if (w->reschedule_cb) 1497 if (w->reschedule_cb)
1404 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 1498 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1405 else if (w->interval) 1499 else if (w->interval)
… …
1419 1513
1420void 1514void
1421ev_periodic_stop (EV_P_ struct ev_periodic *w) 1515ev_periodic_stop (EV_P_ struct ev_periodic *w)
1422{ 1516{
1423 ev_clear_pending (EV_A_ (W)w); 1517 ev_clear_pending (EV_A_ (W)w);
1424 if (!ev_is_active (w)) 1518 if (expect_false (!ev_is_active (w)))
1425 return; 1519 return;
1426 1520
1427 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); 1521 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1428 1522
1429 if (((W)w)->active < periodiccnt--) 1523 if (expect_true (((W)w)->active < periodiccnt--))
1430 { 1524 {
1431 periodics [((W)w)->active - 1] = periodics [periodiccnt]; 1525 periodics [((W)w)->active - 1] = periodics [periodiccnt];
1432 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); 1526 adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1433 } 1527 }
1434 1528
… …
1445#endif 1539#endif
1446 1540
1447void 1541void
1448ev_idle_start (EV_P_ struct ev_idle *w) 1542ev_idle_start (EV_P_ struct ev_idle *w)
1449{ 1543{
1450 if (ev_is_active (w)) 1544 if (expect_false (ev_is_active (w)))
1451 return; 1545 return;
1452 1546
1453 ev_start (EV_A_ (W)w, ++idlecnt); 1547 ev_start (EV_A_ (W)w, ++idlecnt);
1454 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2); 1548 array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1455 idles [idlecnt - 1] = w; 1549 idles [idlecnt - 1] = w;
… …
1457 1551
1458void 1552void
1459ev_idle_stop (EV_P_ struct ev_idle *w) 1553ev_idle_stop (EV_P_ struct ev_idle *w)
1460{ 1554{
1461 ev_clear_pending (EV_A_ (W)w); 1555 ev_clear_pending (EV_A_ (W)w);
1462 if (!ev_is_active (w)) 1556 if (expect_false (!ev_is_active (w)))
1463 return; 1557 return;
1464 1558
1465 idles [((W)w)->active - 1] = idles [--idlecnt]; 1559 idles [((W)w)->active - 1] = idles [--idlecnt];
1466 ev_stop (EV_A_ (W)w); 1560 ev_stop (EV_A_ (W)w);
1467} 1561}
1468 1562
1469void 1563void
1470ev_prepare_start (EV_P_ struct ev_prepare *w) 1564ev_prepare_start (EV_P_ struct ev_prepare *w)
1471{ 1565{
1472 if (ev_is_active (w)) 1566 if (expect_false (ev_is_active (w)))
1473 return; 1567 return;
1474 1568
1475 ev_start (EV_A_ (W)w, ++preparecnt); 1569 ev_start (EV_A_ (W)w, ++preparecnt);
1476 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 1570 array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1477 prepares [preparecnt - 1] = w; 1571 prepares [preparecnt - 1] = w;
… …
1479 1573
1480void 1574void
1481ev_prepare_stop (EV_P_ struct ev_prepare *w) 1575ev_prepare_stop (EV_P_ struct ev_prepare *w)
1482{ 1576{
1483 ev_clear_pending (EV_A_ (W)w); 1577 ev_clear_pending (EV_A_ (W)w);
1484 if (!ev_is_active (w)) 1578 if (expect_false (!ev_is_active (w)))
1485 return; 1579 return;
1486 1580
1487 prepares [((W)w)->active - 1] = prepares [--preparecnt]; 1581 prepares [((W)w)->active - 1] = prepares [--preparecnt];
1488 ev_stop (EV_A_ (W)w); 1582 ev_stop (EV_A_ (W)w);
1489} 1583}
1490 1584
1491void 1585void
1492ev_check_start (EV_P_ struct ev_check *w) 1586ev_check_start (EV_P_ struct ev_check *w)
1493{ 1587{
1494 if (ev_is_active (w)) 1588 if (expect_false (ev_is_active (w)))
1495 return; 1589 return;
1496 1590
1497 ev_start (EV_A_ (W)w, ++checkcnt); 1591 ev_start (EV_A_ (W)w, ++checkcnt);
1498 array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2); 1592 array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1499 checks [checkcnt - 1] = w; 1593 checks [checkcnt - 1] = w;
… …
1501 1595
1502void 1596void
1503ev_check_stop (EV_P_ struct ev_check *w) 1597ev_check_stop (EV_P_ struct ev_check *w)
1504{ 1598{
1505 ev_clear_pending (EV_A_ (W)w); 1599 ev_clear_pending (EV_A_ (W)w);
1506 if (!ev_is_active (w)) 1600 if (expect_false (!ev_is_active (w)))
1507 return; 1601 return;
1508 1602
1509 checks [((W)w)->active - 1] = checks [--checkcnt]; 1603 checks [((W)w)->active - 1] = checks [--checkcnt];
1510 ev_stop (EV_A_ (W)w); 1604 ev_stop (EV_A_ (W)w);
1511} 1605}
… …
1516 1610
1517void 1611void
1518ev_signal_start (EV_P_ struct ev_signal *w) 1612ev_signal_start (EV_P_ struct ev_signal *w)
1519{ 1613{
1520#if EV_MULTIPLICITY 1614#if EV_MULTIPLICITY
1521 assert (("signal watchers are only supported in the default loop", loop == default_loop)); 1615 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1522#endif 1616#endif
1523 if (ev_is_active (w)) 1617 if (expect_false (ev_is_active (w)))
1524 return; 1618 return;
1525 1619
1526 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 1620 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1527 1621
1528 ev_start (EV_A_ (W)w, 1); 1622 ev_start (EV_A_ (W)w, 1);
… …
1545 1639
1546void 1640void
1547ev_signal_stop (EV_P_ struct ev_signal *w) 1641ev_signal_stop (EV_P_ struct ev_signal *w)
1548{ 1642{
1549 ev_clear_pending (EV_A_ (W)w); 1643 ev_clear_pending (EV_A_ (W)w);
1550 if (!ev_is_active (w)) 1644 if (expect_false (!ev_is_active (w)))
1551 return; 1645 return;
1552 1646
1553 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); 1647 wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1554 ev_stop (EV_A_ (W)w); 1648 ev_stop (EV_A_ (W)w);
1555 1649
… …
1559 1653
1560void 1654void
1561ev_child_start (EV_P_ struct ev_child *w) 1655ev_child_start (EV_P_ struct ev_child *w)
1562{ 1656{
1563#if EV_MULTIPLICITY 1657#if EV_MULTIPLICITY
1564 assert (("child watchers are only supported in the default loop", loop == default_loop)); 1658 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1565#endif 1659#endif
1566 if (ev_is_active (w)) 1660 if (expect_false (ev_is_active (w)))
1567 return; 1661 return;
1568 1662
1569 ev_start (EV_A_ (W)w, 1); 1663 ev_start (EV_A_ (W)w, 1);
1570 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1664 wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1571} 1665}
1572 1666
1573void 1667void
1574ev_child_stop (EV_P_ struct ev_child *w) 1668ev_child_stop (EV_P_ struct ev_child *w)
1575{ 1669{
1576 ev_clear_pending (EV_A_ (W)w); 1670 ev_clear_pending (EV_A_ (W)w);
1577 if (!ev_is_active (w)) 1671 if (expect_false (!ev_is_active (w)))
1578 return; 1672 return;
1579 1673
1580 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); 1674 wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1581 ev_stop (EV_A_ (W)w); 1675 ev_stop (EV_A_ (W)w);
1582} 1676}
1677
1678#if EV_MULTIPLICITY
1679static void
1680embed_cb (EV_P_ struct ev_io *io, int revents)
1681{
1682 struct ev_embed *w = (struct ev_embed *)(((char *)io) - offsetof (struct ev_embed, io));
1683
1684 ev_feed_event (EV_A_ (W)w, EV_EMBED);
1685 ev_loop (w->loop, EVLOOP_NONBLOCK);
1686}
1687
1688void
1689ev_embed_start (EV_P_ struct ev_embed *w)
1690{
1691 if (expect_false (ev_is_active (w)))
1692 return;
1693
1694 {
1695 struct ev_loop *loop = w->loop;
1696 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1697 ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1698 }
1699
1700 ev_io_start (EV_A_ &w->io);
1701 ev_start (EV_A_ (W)w, 1);
1702}
1703
1704void
1705ev_embed_stop (EV_P_ struct ev_embed *w)
1706{
1707 ev_clear_pending (EV_A_ (W)w);
1708 if (expect_false (!ev_is_active (w)))
1709 return;
1710
1711 ev_io_stop (EV_A_ &w->io);
1712 ev_stop (EV_A_ (W)w);
1713}
1714#endif
1583 1715
1584/*****************************************************************************/ 1716/*****************************************************************************/
1585 1717
1586struct ev_once 1718struct ev_once
1587{ 1719{
… …
1619void 1751void
1620ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 1752ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1621{ 1753{
1622 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); 1754 struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1623 1755
1624 if (!once) 1756 if (expect_false (!once))
1757 {
1625 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); 1758 cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1626 else 1759 return;
1627 { 1760 }
1761
1628 once->cb = cb; 1762 once->cb = cb;
1629 once->arg = arg; 1763 once->arg = arg;
1630 1764
1631 ev_init (&once->io, once_cb_io); 1765 ev_init (&once->io, once_cb_io);
1632 if (fd >= 0) 1766 if (fd >= 0)
1633 { 1767 {
1634 ev_io_set (&once->io, fd, events); 1768 ev_io_set (&once->io, fd, events);
1635 ev_io_start (EV_A_ &once->io); 1769 ev_io_start (EV_A_ &once->io);
1636 } 1770 }
1637 1771
1638 ev_init (&once->to, once_cb_to); 1772 ev_init (&once->to, once_cb_to);
1639 if (timeout >= 0.) 1773 if (timeout >= 0.)
1640 { 1774 {
1641 ev_timer_set (&once->to, timeout, 0.); 1775 ev_timer_set (&once->to, timeout, 0.);
1642 ev_timer_start (EV_A_ &once->to); 1776 ev_timer_start (EV_A_ &once->to);
1643 }
1644 } 1777 }
1645} 1778}
1646 1779
1647#ifdef __cplusplus 1780#ifdef __cplusplus
1648} 1781}

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