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

Comparing libev/ev.c (file contents):
Revision 1.247 by root, Wed May 21 21:22:10 2008 UTC vs.
Revision 1.278 by root, Tue Jan 6 19:46:56 2009 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
47# include EV_CONFIG_H 47# include EV_CONFIG_H
48# else 48# else
49# include "config.h" 49# include "config.h"
50# endif 50# endif
51 51
52# if HAVE_CLOCK_SYSCALL
53# ifndef EV_USE_CLOCK_SYSCALL
54# define EV_USE_CLOCK_SYSCALL 1
55# ifndef EV_USE_REALTIME
56# define EV_USE_REALTIME 0
57# endif
58# ifndef EV_USE_MONOTONIC
59# define EV_USE_MONOTONIC 1
60# endif
61# endif
62# endif
63
52# if HAVE_CLOCK_GETTIME 64# if HAVE_CLOCK_GETTIME
53# ifndef EV_USE_MONOTONIC 65# ifndef EV_USE_MONOTONIC
54# define EV_USE_MONOTONIC 1 66# define EV_USE_MONOTONIC 1
55# endif 67# endif
56# ifndef EV_USE_REALTIME 68# ifndef EV_USE_REALTIME
126# define EV_USE_EVENTFD 1 138# define EV_USE_EVENTFD 1
127# else 139# else
128# define EV_USE_EVENTFD 0 140# define EV_USE_EVENTFD 0
129# endif 141# endif
130# endif 142# endif
131 143
132#endif 144#endif
133 145
134#include <math.h> 146#include <math.h>
135#include <stdlib.h> 147#include <stdlib.h>
136#include <fcntl.h> 148#include <fcntl.h>
154#ifndef _WIN32 166#ifndef _WIN32
155# include <sys/time.h> 167# include <sys/time.h>
156# include <sys/wait.h> 168# include <sys/wait.h>
157# include <unistd.h> 169# include <unistd.h>
158#else 170#else
171# include <io.h>
159# define WIN32_LEAN_AND_MEAN 172# define WIN32_LEAN_AND_MEAN
160# include <windows.h> 173# include <windows.h>
161# ifndef EV_SELECT_IS_WINSOCKET 174# ifndef EV_SELECT_IS_WINSOCKET
162# define EV_SELECT_IS_WINSOCKET 1 175# define EV_SELECT_IS_WINSOCKET 1
163# endif 176# endif
164#endif 177#endif
165 178
166/* this block tries to deduce configuration from header-defined symbols and defaults */ 179/* this block tries to deduce configuration from header-defined symbols and defaults */
167 180
181#ifndef EV_USE_CLOCK_SYSCALL
182# if __linux && __GLIBC__ >= 2
183# define EV_USE_CLOCK_SYSCALL 1
184# else
185# define EV_USE_CLOCK_SYSCALL 0
186# endif
187#endif
188
168#ifndef EV_USE_MONOTONIC 189#ifndef EV_USE_MONOTONIC
190# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
191# define EV_USE_MONOTONIC 1
192# else
169# define EV_USE_MONOTONIC 0 193# define EV_USE_MONOTONIC 0
194# endif
170#endif 195#endif
171 196
172#ifndef EV_USE_REALTIME 197#ifndef EV_USE_REALTIME
173# define EV_USE_REALTIME 0 198# define EV_USE_REALTIME 0
174#endif 199#endif
175 200
176#ifndef EV_USE_NANOSLEEP 201#ifndef EV_USE_NANOSLEEP
202# if _POSIX_C_SOURCE >= 199309L
203# define EV_USE_NANOSLEEP 1
204# else
177# define EV_USE_NANOSLEEP 0 205# define EV_USE_NANOSLEEP 0
206# endif
178#endif 207#endif
179 208
180#ifndef EV_USE_SELECT 209#ifndef EV_USE_SELECT
181# define EV_USE_SELECT 1 210# define EV_USE_SELECT 1
182#endif 211#endif
235# else 264# else
236# define EV_USE_EVENTFD 0 265# define EV_USE_EVENTFD 0
237# endif 266# endif
238#endif 267#endif
239 268
269#if 0 /* debugging */
270# define EV_VERIFY 3
271# define EV_USE_4HEAP 1
272# define EV_HEAP_CACHE_AT 1
273#endif
274
275#ifndef EV_VERIFY
276# define EV_VERIFY !EV_MINIMAL
277#endif
278
240#ifndef EV_USE_4HEAP 279#ifndef EV_USE_4HEAP
241# define EV_USE_4HEAP !EV_MINIMAL 280# define EV_USE_4HEAP !EV_MINIMAL
242#endif 281#endif
243 282
244#ifndef EV_HEAP_CACHE_AT 283#ifndef EV_HEAP_CACHE_AT
267# include <sys/select.h> 306# include <sys/select.h>
268# endif 307# endif
269#endif 308#endif
270 309
271#if EV_USE_INOTIFY 310#if EV_USE_INOTIFY
311# include <sys/utsname.h>
312# include <sys/statfs.h>
272# include <sys/inotify.h> 313# include <sys/inotify.h>
314/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
315# ifndef IN_DONT_FOLLOW
316# undef EV_USE_INOTIFY
317# define EV_USE_INOTIFY 0
318# endif
273#endif 319#endif
274 320
275#if EV_SELECT_IS_WINSOCKET 321#if EV_SELECT_IS_WINSOCKET
276# include <winsock.h> 322# include <winsock.h>
323#endif
324
325/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326/* which makes programs even slower. might work on other unices, too. */
327#if EV_USE_CLOCK_SYSCALL
328# include <syscall.h>
329# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330# undef EV_USE_MONOTONIC
331# define EV_USE_MONOTONIC 1
277#endif 332#endif
278 333
279#if EV_USE_EVENTFD 334#if EV_USE_EVENTFD
280/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ 335/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
281# include <stdint.h> 336# include <stdint.h>
287} 342}
288# endif 343# endif
289#endif 344#endif
290 345
291/**/ 346/**/
347
348#if EV_VERIFY >= 3
349# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
350#else
351# define EV_FREQUENT_CHECK do { } while (0)
352#endif
292 353
293/* 354/*
294 * This is used to avoid floating point rounding problems. 355 * This is used to avoid floating point rounding problems.
295 * It is added to ev_rt_now when scheduling periodics 356 * It is added to ev_rt_now when scheduling periodics
296 * to ensure progress, time-wise, even when rounding 357 * to ensure progress, time-wise, even when rounding
357{ 418{
358 syserr_cb = cb; 419 syserr_cb = cb;
359} 420}
360 421
361static void noinline 422static void noinline
362syserr (const char *msg) 423ev_syserr (const char *msg)
363{ 424{
364 if (!msg) 425 if (!msg)
365 msg = "(libev) system error"; 426 msg = "(libev) system error";
366 427
367 if (syserr_cb) 428 if (syserr_cb)
418typedef struct 479typedef struct
419{ 480{
420 WL head; 481 WL head;
421 unsigned char events; 482 unsigned char events;
422 unsigned char reify; 483 unsigned char reify;
484 unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
485 unsigned char unused;
486#if EV_USE_EPOLL
487 unsigned int egen; /* generation counter to counter epoll bugs */
488#endif
423#if EV_SELECT_IS_WINSOCKET 489#if EV_SELECT_IS_WINSOCKET
424 SOCKET handle; 490 SOCKET handle;
425#endif 491#endif
426} ANFD; 492} ANFD;
427 493
444 typedef struct { 510 typedef struct {
445 ev_tstamp at; 511 ev_tstamp at;
446 WT w; 512 WT w;
447 } ANHE; 513 } ANHE;
448 514
449 #define ANHE_w(he) (he).w /* access watcher, read-write */ 515 #define ANHE_w(he) (he).w /* access watcher, read-write */
450 #define ANHE_at(he) (he).at /* access cached at, read-only */ 516 #define ANHE_at(he) (he).at /* access cached at, read-only */
451 #define ANHE_at_set(he) (he).at = (he).w->at /* update at from watcher */ 517 #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
452#else 518#else
453 typedef WT ANHE; 519 typedef WT ANHE;
454 520
455 #define ANHE_w(he) (he) 521 #define ANHE_w(he) (he)
456 #define ANHE_at(he) (he)->at 522 #define ANHE_at(he) (he)->at
457 #define ANHE_at_set(he) 523 #define ANHE_at_cache(he)
458#endif 524#endif
459 525
460#if EV_MULTIPLICITY 526#if EV_MULTIPLICITY
461 527
462 struct ev_loop 528 struct ev_loop
540 struct timeval tv; 606 struct timeval tv;
541 607
542 tv.tv_sec = (time_t)delay; 608 tv.tv_sec = (time_t)delay;
543 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 609 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
544 610
611 /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
612 /* somehting nto guaranteed by newer posix versions, but guaranteed */
613 /* by older ones */
545 select (0, 0, 0, 0, &tv); 614 select (0, 0, 0, 0, &tv);
546#endif 615#endif
547 } 616 }
548} 617}
549 618
576array_realloc (int elem, void *base, int *cur, int cnt) 645array_realloc (int elem, void *base, int *cur, int cnt)
577{ 646{
578 *cur = array_nextsize (elem, *cur, cnt); 647 *cur = array_nextsize (elem, *cur, cnt);
579 return ev_realloc (base, elem * *cur); 648 return ev_realloc (base, elem * *cur);
580} 649}
650
651#define array_init_zero(base,count) \
652 memset ((void *)(base), 0, sizeof (*(base)) * (count))
581 653
582#define array_needsize(type,base,cur,cnt,init) \ 654#define array_needsize(type,base,cur,cnt,init) \
583 if (expect_false ((cnt) > (cur))) \ 655 if (expect_false ((cnt) > (cur))) \
584 { \ 656 { \
585 int ocur_ = (cur); \ 657 int ocur_ = (cur); \
629 ev_feed_event (EV_A_ events [i], type); 701 ev_feed_event (EV_A_ events [i], type);
630} 702}
631 703
632/*****************************************************************************/ 704/*****************************************************************************/
633 705
634void inline_size
635anfds_init (ANFD *base, int count)
636{
637 while (count--)
638 {
639 base->head = 0;
640 base->events = EV_NONE;
641 base->reify = 0;
642
643 ++base;
644 }
645}
646
647void inline_speed 706void inline_speed
648fd_event (EV_P_ int fd, int revents) 707fd_event (EV_P_ int fd, int revents)
649{ 708{
650 ANFD *anfd = anfds + fd; 709 ANFD *anfd = anfds + fd;
651 ev_io *w; 710 ev_io *w;
683 events |= (unsigned char)w->events; 742 events |= (unsigned char)w->events;
684 743
685#if EV_SELECT_IS_WINSOCKET 744#if EV_SELECT_IS_WINSOCKET
686 if (events) 745 if (events)
687 { 746 {
688 unsigned long argp; 747 unsigned long arg;
689 #ifdef EV_FD_TO_WIN32_HANDLE 748 #ifdef EV_FD_TO_WIN32_HANDLE
690 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); 749 anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
691 #else 750 #else
692 anfd->handle = _get_osfhandle (fd); 751 anfd->handle = _get_osfhandle (fd);
693 #endif 752 #endif
694 assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); 753 assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
695 } 754 }
696#endif 755#endif
697 756
698 { 757 {
699 unsigned char o_events = anfd->events; 758 unsigned char o_events = anfd->events;
752{ 811{
753 int fd; 812 int fd;
754 813
755 for (fd = 0; fd < anfdmax; ++fd) 814 for (fd = 0; fd < anfdmax; ++fd)
756 if (anfds [fd].events) 815 if (anfds [fd].events)
757 if (!fd_valid (fd) == -1 && errno == EBADF) 816 if (!fd_valid (fd) && errno == EBADF)
758 fd_kill (EV_A_ fd); 817 fd_kill (EV_A_ fd);
759} 818}
760 819
761/* called on ENOMEM in select/poll to kill some fds and retry */ 820/* called on ENOMEM in select/poll to kill some fds and retry */
762static void noinline 821static void noinline
780 839
781 for (fd = 0; fd < anfdmax; ++fd) 840 for (fd = 0; fd < anfdmax; ++fd)
782 if (anfds [fd].events) 841 if (anfds [fd].events)
783 { 842 {
784 anfds [fd].events = 0; 843 anfds [fd].events = 0;
844 anfds [fd].emask = 0;
785 fd_change (EV_A_ fd, EV_IOFDSET | 1); 845 fd_change (EV_A_ fd, EV_IOFDSET | 1);
786 } 846 }
787} 847}
788 848
789/*****************************************************************************/ 849/*****************************************************************************/
803#if EV_USE_4HEAP 863#if EV_USE_4HEAP
804 864
805#define DHEAP 4 865#define DHEAP 4
806#define HEAP0 (DHEAP - 1) /* index of first element in heap */ 866#define HEAP0 (DHEAP - 1) /* index of first element in heap */
807#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) 867#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
808 868#define UPHEAP_DONE(p,k) ((p) == (k))
809/* towards the root */
810void inline_speed
811upheap (ANHE *heap, int k)
812{
813 ANHE he = heap [k];
814
815 for (;;)
816 {
817 int p = HPARENT (k);
818
819 if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
820 break;
821
822 heap [k] = heap [p];
823 ev_active (ANHE_w (heap [k])) = k;
824 k = p;
825 }
826
827 heap [k] = he;
828 ev_active (ANHE_w (he)) = k;
829}
830 869
831/* away from the root */ 870/* away from the root */
832void inline_speed 871void inline_speed
833downheap (ANHE *heap, int N, int k) 872downheap (ANHE *heap, int N, int k)
834{ 873{
837 876
838 for (;;) 877 for (;;)
839 { 878 {
840 ev_tstamp minat; 879 ev_tstamp minat;
841 ANHE *minpos; 880 ANHE *minpos;
842 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0; 881 ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
843 882
844 // find minimum child 883 /* find minimum child */
845 if (expect_true (pos + DHEAP - 1 < E)) 884 if (expect_true (pos + DHEAP - 1 < E))
846 { 885 {
847 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); 886 /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
848 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); 887 if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
849 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); 888 if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
870 909
871 heap [k] = he; 910 heap [k] = he;
872 ev_active (ANHE_w (he)) = k; 911 ev_active (ANHE_w (he)) = k;
873} 912}
874 913
875#else // 4HEAP 914#else /* 4HEAP */
876 915
877#define HEAP0 1 916#define HEAP0 1
878#define HPARENT(k) ((k) >> 1) 917#define HPARENT(k) ((k) >> 1)
879 918#define UPHEAP_DONE(p,k) (!(p))
880/* towards the root */
881void inline_speed
882upheap (ANHE *heap, int k)
883{
884 ANHE he = heap [k];
885
886 for (;;)
887 {
888 int p = HPARENT (k);
889
890 /* maybe we could use a dummy element at heap [0]? */
891 if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
892 break;
893
894 heap [k] = heap [p];
895 ev_active (ANHE_w (heap [k])) = k;
896 k = p;
897 }
898
899 heap [k] = he;
900 ev_active (ANHE_w (heap [k])) = k;
901}
902 919
903/* away from the root */ 920/* away from the root */
904void inline_speed 921void inline_speed
905downheap (ANHE *heap, int N, int k) 922downheap (ANHE *heap, int N, int k)
906{ 923{
908 925
909 for (;;) 926 for (;;)
910 { 927 {
911 int c = k << 1; 928 int c = k << 1;
912 929
913 if (c > N) 930 if (c > N + HEAP0 - 1)
914 break; 931 break;
915 932
916 c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) 933 c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
917 ? 1 : 0; 934 ? 1 : 0;
918 935
919 if (ANHE_at (he) <= ANHE_at (heap [c])) 936 if (ANHE_at (he) <= ANHE_at (heap [c]))
920 break; 937 break;
921 938
928 heap [k] = he; 945 heap [k] = he;
929 ev_active (ANHE_w (he)) = k; 946 ev_active (ANHE_w (he)) = k;
930} 947}
931#endif 948#endif
932 949
950/* towards the root */
951void inline_speed
952upheap (ANHE *heap, int k)
953{
954 ANHE he = heap [k];
955
956 for (;;)
957 {
958 int p = HPARENT (k);
959
960 if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
961 break;
962
963 heap [k] = heap [p];
964 ev_active (ANHE_w (heap [k])) = k;
965 k = p;
966 }
967
968 heap [k] = he;
969 ev_active (ANHE_w (he)) = k;
970}
971
933void inline_size 972void inline_size
934adjustheap (ANHE *heap, int N, int k) 973adjustheap (ANHE *heap, int N, int k)
935{ 974{
936 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) 975 if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
937 upheap (heap, k); 976 upheap (heap, k);
938 else 977 else
939 downheap (heap, N, k); 978 downheap (heap, N, k);
940} 979}
941 980
981/* rebuild the heap: this function is used only once and executed rarely */
982void inline_size
983reheap (ANHE *heap, int N)
984{
985 int i;
986
987 /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
988 /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
989 for (i = 0; i < N; ++i)
990 upheap (heap, i + HEAP0);
991}
992
942/*****************************************************************************/ 993/*****************************************************************************/
943 994
944typedef struct 995typedef struct
945{ 996{
946 WL head; 997 WL head;
950static ANSIG *signals; 1001static ANSIG *signals;
951static int signalmax; 1002static int signalmax;
952 1003
953static EV_ATOMIC_T gotsig; 1004static EV_ATOMIC_T gotsig;
954 1005
955void inline_size
956signals_init (ANSIG *base, int count)
957{
958 while (count--)
959 {
960 base->head = 0;
961 base->gotsig = 0;
962
963 ++base;
964 }
965}
966
967/*****************************************************************************/ 1006/*****************************************************************************/
968 1007
969void inline_speed 1008void inline_speed
970fd_intern (int fd) 1009fd_intern (int fd)
971{ 1010{
972#ifdef _WIN32 1011#ifdef _WIN32
973 int arg = 1; 1012 unsigned long arg = 1;
974 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); 1013 ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
975#else 1014#else
976 fcntl (fd, F_SETFD, FD_CLOEXEC); 1015 fcntl (fd, F_SETFD, FD_CLOEXEC);
977 fcntl (fd, F_SETFL, O_NONBLOCK); 1016 fcntl (fd, F_SETFL, O_NONBLOCK);
978#endif 1017#endif
992 } 1031 }
993 else 1032 else
994#endif 1033#endif
995 { 1034 {
996 while (pipe (evpipe)) 1035 while (pipe (evpipe))
997 syserr ("(libev) error creating signal/async pipe"); 1036 ev_syserr ("(libev) error creating signal/async pipe");
998 1037
999 fd_intern (evpipe [0]); 1038 fd_intern (evpipe [0]);
1000 fd_intern (evpipe [1]); 1039 fd_intern (evpipe [1]);
1001 ev_io_set (&pipeev, evpipe [0], EV_READ); 1040 ev_io_set (&pipeev, evpipe [0], EV_READ);
1002 } 1041 }
1092ev_feed_signal_event (EV_P_ int signum) 1131ev_feed_signal_event (EV_P_ int signum)
1093{ 1132{
1094 WL w; 1133 WL w;
1095 1134
1096#if EV_MULTIPLICITY 1135#if EV_MULTIPLICITY
1097 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); 1136 assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1098#endif 1137#endif
1099 1138
1100 --signum; 1139 --signum;
1101 1140
1102 if (signum < 0 || signum >= signalmax) 1141 if (signum < 0 || signum >= signalmax)
1231 /* kqueue is borked on everything but netbsd apparently */ 1270 /* kqueue is borked on everything but netbsd apparently */
1232 /* it usually doesn't work correctly on anything but sockets and pipes */ 1271 /* it usually doesn't work correctly on anything but sockets and pipes */
1233 flags &= ~EVBACKEND_KQUEUE; 1272 flags &= ~EVBACKEND_KQUEUE;
1234#endif 1273#endif
1235#ifdef __APPLE__ 1274#ifdef __APPLE__
1236 // flags &= ~EVBACKEND_KQUEUE; for documentation 1275 /* only select works correctly on that "unix-certified" platform */
1237 flags &= ~EVBACKEND_POLL; 1276 flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1277 flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1238#endif 1278#endif
1239 1279
1240 return flags; 1280 return flags;
1241} 1281}
1242 1282
1462 1502
1463 postfork = 0; 1503 postfork = 0;
1464} 1504}
1465 1505
1466#if EV_MULTIPLICITY 1506#if EV_MULTIPLICITY
1507
1467struct ev_loop * 1508struct ev_loop *
1468ev_loop_new (unsigned int flags) 1509ev_loop_new (unsigned int flags)
1469{ 1510{
1470 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); 1511 struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1471 1512
1489void 1530void
1490ev_loop_fork (EV_P) 1531ev_loop_fork (EV_P)
1491{ 1532{
1492 postfork = 1; /* must be in line with ev_default_fork */ 1533 postfork = 1; /* must be in line with ev_default_fork */
1493} 1534}
1535
1536#if EV_VERIFY
1537static void noinline
1538verify_watcher (EV_P_ W w)
1539{
1540 assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1541
1542 if (w->pending)
1543 assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1544}
1545
1546static void noinline
1547verify_heap (EV_P_ ANHE *heap, int N)
1548{
1549 int i;
1550
1551 for (i = HEAP0; i < N + HEAP0; ++i)
1552 {
1553 assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1554 assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1555 assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1556
1557 verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1558 }
1559}
1560
1561static void noinline
1562array_verify (EV_P_ W *ws, int cnt)
1563{
1564 while (cnt--)
1565 {
1566 assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1567 verify_watcher (EV_A_ ws [cnt]);
1568 }
1569}
1570#endif
1571
1572void
1573ev_loop_verify (EV_P)
1574{
1575#if EV_VERIFY
1576 int i;
1577 WL w;
1578
1579 assert (activecnt >= -1);
1580
1581 assert (fdchangemax >= fdchangecnt);
1582 for (i = 0; i < fdchangecnt; ++i)
1583 assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1584
1585 assert (anfdmax >= 0);
1586 for (i = 0; i < anfdmax; ++i)
1587 for (w = anfds [i].head; w; w = w->next)
1588 {
1589 verify_watcher (EV_A_ (W)w);
1590 assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1591 assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1592 }
1593
1594 assert (timermax >= timercnt);
1595 verify_heap (EV_A_ timers, timercnt);
1596
1597#if EV_PERIODIC_ENABLE
1598 assert (periodicmax >= periodiccnt);
1599 verify_heap (EV_A_ periodics, periodiccnt);
1600#endif
1601
1602 for (i = NUMPRI; i--; )
1603 {
1604 assert (pendingmax [i] >= pendingcnt [i]);
1605#if EV_IDLE_ENABLE
1606 assert (idleall >= 0);
1607 assert (idlemax [i] >= idlecnt [i]);
1608 array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1609#endif
1610 }
1611
1612#if EV_FORK_ENABLE
1613 assert (forkmax >= forkcnt);
1614 array_verify (EV_A_ (W *)forks, forkcnt);
1615#endif
1616
1617#if EV_ASYNC_ENABLE
1618 assert (asyncmax >= asynccnt);
1619 array_verify (EV_A_ (W *)asyncs, asynccnt);
1620#endif
1621
1622 assert (preparemax >= preparecnt);
1623 array_verify (EV_A_ (W *)prepares, preparecnt);
1624
1625 assert (checkmax >= checkcnt);
1626 array_verify (EV_A_ (W *)checks, checkcnt);
1627
1628# if 0
1629 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1630 for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1494#endif 1631# endif
1632#endif
1633}
1634
1635#endif /* multiplicity */
1495 1636
1496#if EV_MULTIPLICITY 1637#if EV_MULTIPLICITY
1497struct ev_loop * 1638struct ev_loop *
1498ev_default_loop_init (unsigned int flags) 1639ev_default_loop_init (unsigned int flags)
1499#else 1640#else
1532{ 1673{
1533#if EV_MULTIPLICITY 1674#if EV_MULTIPLICITY
1534 struct ev_loop *loop = ev_default_loop_ptr; 1675 struct ev_loop *loop = ev_default_loop_ptr;
1535#endif 1676#endif
1536 1677
1678 ev_default_loop_ptr = 0;
1679
1537#ifndef _WIN32 1680#ifndef _WIN32
1538 ev_ref (EV_A); /* child watcher */ 1681 ev_ref (EV_A); /* child watcher */
1539 ev_signal_stop (EV_A_ &childev); 1682 ev_signal_stop (EV_A_ &childev);
1540#endif 1683#endif
1541 1684
1547{ 1690{
1548#if EV_MULTIPLICITY 1691#if EV_MULTIPLICITY
1549 struct ev_loop *loop = ev_default_loop_ptr; 1692 struct ev_loop *loop = ev_default_loop_ptr;
1550#endif 1693#endif
1551 1694
1552 if (backend)
1553 postfork = 1; /* must be in line with ev_loop_fork */ 1695 postfork = 1; /* must be in line with ev_loop_fork */
1554} 1696}
1555 1697
1556/*****************************************************************************/ 1698/*****************************************************************************/
1557 1699
1558void 1700void
1571 { 1713 {
1572 ANPENDING *p = pendings [pri] + --pendingcnt [pri]; 1714 ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1573 1715
1574 if (expect_true (p->w)) 1716 if (expect_true (p->w))
1575 { 1717 {
1576 /*assert (("non-pending watcher on pending list", p->w->pending));*/ 1718 /*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
1577 1719
1578 p->w->pending = 0; 1720 p->w->pending = 0;
1579 EV_CB_INVOKE (p->w, p->events); 1721 EV_CB_INVOKE (p->w, p->events);
1722 EV_FREQUENT_CHECK;
1580 } 1723 }
1581 } 1724 }
1582} 1725}
1583 1726
1584#if EV_IDLE_ENABLE 1727#if EV_IDLE_ENABLE
1605#endif 1748#endif
1606 1749
1607void inline_size 1750void inline_size
1608timers_reify (EV_P) 1751timers_reify (EV_P)
1609{ 1752{
1753 EV_FREQUENT_CHECK;
1754
1610 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) 1755 while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1611 { 1756 {
1612 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); 1757 ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1613 1758
1614 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ 1759 /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
1615 1760
1616 /* first reschedule or stop timer */ 1761 /* first reschedule or stop timer */
1617 if (w->repeat) 1762 if (w->repeat)
1618 { 1763 {
1619 ev_at (w) += w->repeat; 1764 ev_at (w) += w->repeat;
1620 if (ev_at (w) < mn_now) 1765 if (ev_at (w) < mn_now)
1621 ev_at (w) = mn_now; 1766 ev_at (w) = mn_now;
1622 1767
1623 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); 1768 assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1624 1769
1625 ANHE_at_set (timers [HEAP0]); 1770 ANHE_at_cache (timers [HEAP0]);
1626 downheap (timers, timercnt, HEAP0); 1771 downheap (timers, timercnt, HEAP0);
1627 } 1772 }
1628 else 1773 else
1629 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ 1774 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1630 1775
1776 EV_FREQUENT_CHECK;
1631 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); 1777 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1632 } 1778 }
1633} 1779}
1634 1780
1635#if EV_PERIODIC_ENABLE 1781#if EV_PERIODIC_ENABLE
1636void inline_size 1782void inline_size
1637periodics_reify (EV_P) 1783periodics_reify (EV_P)
1638{ 1784{
1785 EV_FREQUENT_CHECK;
1786
1639 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) 1787 while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1640 { 1788 {
1641 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); 1789 ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1642 1790
1643 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ 1791 /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
1644 1792
1645 /* first reschedule or stop timer */ 1793 /* first reschedule or stop timer */
1646 if (w->reschedule_cb) 1794 if (w->reschedule_cb)
1647 { 1795 {
1648 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 1796 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1649 1797
1650 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); 1798 assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1651 1799
1652 ANHE_at_set (periodics [HEAP0]); 1800 ANHE_at_cache (periodics [HEAP0]);
1653 downheap (periodics, periodiccnt, HEAP0); 1801 downheap (periodics, periodiccnt, HEAP0);
1654 } 1802 }
1655 else if (w->interval) 1803 else if (w->interval)
1656 { 1804 {
1657 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 1805 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1666 /* has effectively asked to get triggered more often than possible */ 1814 /* has effectively asked to get triggered more often than possible */
1667 if (ev_at (w) < ev_rt_now) 1815 if (ev_at (w) < ev_rt_now)
1668 ev_at (w) = ev_rt_now; 1816 ev_at (w) = ev_rt_now;
1669 } 1817 }
1670 1818
1671 ANHE_at_set (periodics [HEAP0]); 1819 ANHE_at_cache (periodics [HEAP0]);
1672 downheap (periodics, periodiccnt, HEAP0); 1820 downheap (periodics, periodiccnt, HEAP0);
1673 } 1821 }
1674 else 1822 else
1675 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ 1823 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1676 1824
1825 EV_FREQUENT_CHECK;
1677 ev_feed_event (EV_A_ (W)w, EV_PERIODIC); 1826 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1678 } 1827 }
1679} 1828}
1680 1829
1681static void noinline 1830static void noinline
1691 if (w->reschedule_cb) 1840 if (w->reschedule_cb)
1692 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 1841 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1693 else if (w->interval) 1842 else if (w->interval)
1694 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 1843 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1695 1844
1696 ANHE_at_set (periodics [i]); 1845 ANHE_at_cache (periodics [i]);
1697 } 1846 }
1698 1847
1699 /* we don't use floyds algorithm, uphead is simpler and is more cache-efficient */ 1848 reheap (periodics, periodiccnt);
1700 /* also, this is easy and corretc for both 2-heaps and 4-heaps */
1701 for (i = 0; i < periodiccnt; ++i)
1702 upheap (periodics, i + HEAP0);
1703} 1849}
1704#endif 1850#endif
1705 1851
1706void inline_speed 1852void inline_speed
1707time_update (EV_P_ ev_tstamp max_block) 1853time_update (EV_P_ ev_tstamp max_block)
1765 /* adjust timers. this is easy, as the offset is the same for all of them */ 1911 /* adjust timers. this is easy, as the offset is the same for all of them */
1766 for (i = 0; i < timercnt; ++i) 1912 for (i = 0; i < timercnt; ++i)
1767 { 1913 {
1768 ANHE *he = timers + i + HEAP0; 1914 ANHE *he = timers + i + HEAP0;
1769 ANHE_w (*he)->at += ev_rt_now - mn_now; 1915 ANHE_w (*he)->at += ev_rt_now - mn_now;
1770 ANHE_at_set (*he); 1916 ANHE_at_cache (*he);
1771 } 1917 }
1772 } 1918 }
1773 1919
1774 mn_now = ev_rt_now; 1920 mn_now = ev_rt_now;
1775 } 1921 }
1785ev_unref (EV_P) 1931ev_unref (EV_P)
1786{ 1932{
1787 --activecnt; 1933 --activecnt;
1788} 1934}
1789 1935
1936void
1937ev_now_update (EV_P)
1938{
1939 time_update (EV_A_ 1e100);
1940}
1941
1790static int loop_done; 1942static int loop_done;
1791 1943
1792void 1944void
1793ev_loop (EV_P_ int flags) 1945ev_loop (EV_P_ int flags)
1794{ 1946{
1796 1948
1797 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 1949 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1798 1950
1799 do 1951 do
1800 { 1952 {
1953#if EV_VERIFY >= 2
1954 ev_loop_verify (EV_A);
1955#endif
1956
1801#ifndef _WIN32 1957#ifndef _WIN32
1802 if (expect_false (curpid)) /* penalise the forking check even more */ 1958 if (expect_false (curpid)) /* penalise the forking check even more */
1803 if (expect_false (getpid () != curpid)) 1959 if (expect_false (getpid () != curpid))
1804 { 1960 {
1805 curpid = getpid (); 1961 curpid = getpid ();
1998 int fd = w->fd; 2154 int fd = w->fd;
1999 2155
2000 if (expect_false (ev_is_active (w))) 2156 if (expect_false (ev_is_active (w)))
2001 return; 2157 return;
2002 2158
2003 assert (("ev_io_start called with negative fd", fd >= 0)); 2159 assert (("libev: ev_io_start called with negative fd", fd >= 0));
2160 assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE))));
2161
2162 EV_FREQUENT_CHECK;
2004 2163
2005 ev_start (EV_A_ (W)w, 1); 2164 ev_start (EV_A_ (W)w, 1);
2006 array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); 2165 array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2007 wlist_add (&anfds[fd].head, (WL)w); 2166 wlist_add (&anfds[fd].head, (WL)w);
2008 2167
2009 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); 2168 fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
2010 w->events &= ~EV_IOFDSET; 2169 w->events &= ~EV_IOFDSET;
2170
2171 EV_FREQUENT_CHECK;
2011} 2172}
2012 2173
2013void noinline 2174void noinline
2014ev_io_stop (EV_P_ ev_io *w) 2175ev_io_stop (EV_P_ ev_io *w)
2015{ 2176{
2016 clear_pending (EV_A_ (W)w); 2177 clear_pending (EV_A_ (W)w);
2017 if (expect_false (!ev_is_active (w))) 2178 if (expect_false (!ev_is_active (w)))
2018 return; 2179 return;
2019 2180
2020 assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); 2181 assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2182
2183 EV_FREQUENT_CHECK;
2021 2184
2022 wlist_del (&anfds[w->fd].head, (WL)w); 2185 wlist_del (&anfds[w->fd].head, (WL)w);
2023 ev_stop (EV_A_ (W)w); 2186 ev_stop (EV_A_ (W)w);
2024 2187
2025 fd_change (EV_A_ w->fd, 1); 2188 fd_change (EV_A_ w->fd, 1);
2189
2190 EV_FREQUENT_CHECK;
2026} 2191}
2027 2192
2028void noinline 2193void noinline
2029ev_timer_start (EV_P_ ev_timer *w) 2194ev_timer_start (EV_P_ ev_timer *w)
2030{ 2195{
2031 if (expect_false (ev_is_active (w))) 2196 if (expect_false (ev_is_active (w)))
2032 return; 2197 return;
2033 2198
2034 ev_at (w) += mn_now; 2199 ev_at (w) += mn_now;
2035 2200
2036 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 2201 assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2037 2202
2203 EV_FREQUENT_CHECK;
2204
2205 ++timercnt;
2038 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); 2206 ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2039 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); 2207 array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2040 ANHE_w (timers [ev_active (w)]) = (WT)w; 2208 ANHE_w (timers [ev_active (w)]) = (WT)w;
2041 ANHE_at_set (timers [ev_active (w)]); 2209 ANHE_at_cache (timers [ev_active (w)]);
2042 upheap (timers, ev_active (w)); 2210 upheap (timers, ev_active (w));
2043 2211
2212 EV_FREQUENT_CHECK;
2213
2044 /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ 2214 /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2045} 2215}
2046 2216
2047void noinline 2217void noinline
2048ev_timer_stop (EV_P_ ev_timer *w) 2218ev_timer_stop (EV_P_ ev_timer *w)
2049{ 2219{
2050 clear_pending (EV_A_ (W)w); 2220 clear_pending (EV_A_ (W)w);
2051 if (expect_false (!ev_is_active (w))) 2221 if (expect_false (!ev_is_active (w)))
2052 return; 2222 return;
2053 2223
2224 EV_FREQUENT_CHECK;
2225
2054 { 2226 {
2055 int active = ev_active (w); 2227 int active = ev_active (w);
2056 2228
2057 assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); 2229 assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2058 2230
2231 --timercnt;
2232
2059 if (expect_true (active < timercnt + HEAP0 - 1)) 2233 if (expect_true (active < timercnt + HEAP0))
2060 { 2234 {
2061 timers [active] = timers [timercnt + HEAP0 - 1]; 2235 timers [active] = timers [timercnt + HEAP0];
2062 adjustheap (timers, timercnt, active); 2236 adjustheap (timers, timercnt, active);
2063 } 2237 }
2064
2065 --timercnt;
2066 } 2238 }
2239
2240 EV_FREQUENT_CHECK;
2067 2241
2068 ev_at (w) -= mn_now; 2242 ev_at (w) -= mn_now;
2069 2243
2070 ev_stop (EV_A_ (W)w); 2244 ev_stop (EV_A_ (W)w);
2071} 2245}
2072 2246
2073void noinline 2247void noinline
2074ev_timer_again (EV_P_ ev_timer *w) 2248ev_timer_again (EV_P_ ev_timer *w)
2075{ 2249{
2250 EV_FREQUENT_CHECK;
2251
2076 if (ev_is_active (w)) 2252 if (ev_is_active (w))
2077 { 2253 {
2078 if (w->repeat) 2254 if (w->repeat)
2079 { 2255 {
2080 ev_at (w) = mn_now + w->repeat; 2256 ev_at (w) = mn_now + w->repeat;
2081 ANHE_at_set (timers [ev_active (w)]); 2257 ANHE_at_cache (timers [ev_active (w)]);
2082 adjustheap (timers, timercnt, ev_active (w)); 2258 adjustheap (timers, timercnt, ev_active (w));
2083 } 2259 }
2084 else 2260 else
2085 ev_timer_stop (EV_A_ w); 2261 ev_timer_stop (EV_A_ w);
2086 } 2262 }
2087 else if (w->repeat) 2263 else if (w->repeat)
2088 { 2264 {
2089 ev_at (w) = w->repeat; 2265 ev_at (w) = w->repeat;
2090 ev_timer_start (EV_A_ w); 2266 ev_timer_start (EV_A_ w);
2091 } 2267 }
2268
2269 EV_FREQUENT_CHECK;
2092} 2270}
2093 2271
2094#if EV_PERIODIC_ENABLE 2272#if EV_PERIODIC_ENABLE
2095void noinline 2273void noinline
2096ev_periodic_start (EV_P_ ev_periodic *w) 2274ev_periodic_start (EV_P_ ev_periodic *w)
2100 2278
2101 if (w->reschedule_cb) 2279 if (w->reschedule_cb)
2102 ev_at (w) = w->reschedule_cb (w, ev_rt_now); 2280 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2103 else if (w->interval) 2281 else if (w->interval)
2104 { 2282 {
2105 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2283 assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2106 /* this formula differs from the one in periodic_reify because we do not always round up */ 2284 /* this formula differs from the one in periodic_reify because we do not always round up */
2107 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2285 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2108 } 2286 }
2109 else 2287 else
2110 ev_at (w) = w->offset; 2288 ev_at (w) = w->offset;
2111 2289
2290 EV_FREQUENT_CHECK;
2291
2292 ++periodiccnt;
2112 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); 2293 ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2113 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); 2294 array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2114 ANHE_w (periodics [ev_active (w)]) = (WT)w; 2295 ANHE_w (periodics [ev_active (w)]) = (WT)w;
2115 ANHE_at_set (periodics [ev_active (w)]); 2296 ANHE_at_cache (periodics [ev_active (w)]);
2116 upheap (periodics, ev_active (w)); 2297 upheap (periodics, ev_active (w));
2117 2298
2299 EV_FREQUENT_CHECK;
2300
2118 /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ 2301 /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2119} 2302}
2120 2303
2121void noinline 2304void noinline
2122ev_periodic_stop (EV_P_ ev_periodic *w) 2305ev_periodic_stop (EV_P_ ev_periodic *w)
2123{ 2306{
2124 clear_pending (EV_A_ (W)w); 2307 clear_pending (EV_A_ (W)w);
2125 if (expect_false (!ev_is_active (w))) 2308 if (expect_false (!ev_is_active (w)))
2126 return; 2309 return;
2127 2310
2311 EV_FREQUENT_CHECK;
2312
2128 { 2313 {
2129 int active = ev_active (w); 2314 int active = ev_active (w);
2130 2315
2131 assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); 2316 assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2132 2317
2318 --periodiccnt;
2319
2133 if (expect_true (active < periodiccnt + HEAP0 - 1)) 2320 if (expect_true (active < periodiccnt + HEAP0))
2134 { 2321 {
2135 periodics [active] = periodics [periodiccnt + HEAP0 - 1]; 2322 periodics [active] = periodics [periodiccnt + HEAP0];
2136 adjustheap (periodics, periodiccnt, active); 2323 adjustheap (periodics, periodiccnt, active);
2137 } 2324 }
2138
2139 --periodiccnt;
2140 } 2325 }
2326
2327 EV_FREQUENT_CHECK;
2141 2328
2142 ev_stop (EV_A_ (W)w); 2329 ev_stop (EV_A_ (W)w);
2143} 2330}
2144 2331
2145void noinline 2332void noinline
2157 2344
2158void noinline 2345void noinline
2159ev_signal_start (EV_P_ ev_signal *w) 2346ev_signal_start (EV_P_ ev_signal *w)
2160{ 2347{
2161#if EV_MULTIPLICITY 2348#if EV_MULTIPLICITY
2162 assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2349 assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2163#endif 2350#endif
2164 if (expect_false (ev_is_active (w))) 2351 if (expect_false (ev_is_active (w)))
2165 return; 2352 return;
2166 2353
2167 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2354 assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
2168 2355
2169 evpipe_init (EV_A); 2356 evpipe_init (EV_A);
2357
2358 EV_FREQUENT_CHECK;
2170 2359
2171 { 2360 {
2172#ifndef _WIN32 2361#ifndef _WIN32
2173 sigset_t full, prev; 2362 sigset_t full, prev;
2174 sigfillset (&full); 2363 sigfillset (&full);
2175 sigprocmask (SIG_SETMASK, &full, &prev); 2364 sigprocmask (SIG_SETMASK, &full, &prev);
2176#endif 2365#endif
2177 2366
2178 array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); 2367 array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2179 2368
2180#ifndef _WIN32 2369#ifndef _WIN32
2181 sigprocmask (SIG_SETMASK, &prev, 0); 2370 sigprocmask (SIG_SETMASK, &prev, 0);
2182#endif 2371#endif
2183 } 2372 }
2195 sigfillset (&sa.sa_mask); 2384 sigfillset (&sa.sa_mask);
2196 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2385 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2197 sigaction (w->signum, &sa, 0); 2386 sigaction (w->signum, &sa, 0);
2198#endif 2387#endif
2199 } 2388 }
2389
2390 EV_FREQUENT_CHECK;
2200} 2391}
2201 2392
2202void noinline 2393void noinline
2203ev_signal_stop (EV_P_ ev_signal *w) 2394ev_signal_stop (EV_P_ ev_signal *w)
2204{ 2395{
2205 clear_pending (EV_A_ (W)w); 2396 clear_pending (EV_A_ (W)w);
2206 if (expect_false (!ev_is_active (w))) 2397 if (expect_false (!ev_is_active (w)))
2207 return; 2398 return;
2208 2399
2400 EV_FREQUENT_CHECK;
2401
2209 wlist_del (&signals [w->signum - 1].head, (WL)w); 2402 wlist_del (&signals [w->signum - 1].head, (WL)w);
2210 ev_stop (EV_A_ (W)w); 2403 ev_stop (EV_A_ (W)w);
2211 2404
2212 if (!signals [w->signum - 1].head) 2405 if (!signals [w->signum - 1].head)
2213 signal (w->signum, SIG_DFL); 2406 signal (w->signum, SIG_DFL);
2407
2408 EV_FREQUENT_CHECK;
2214} 2409}
2215 2410
2216void 2411void
2217ev_child_start (EV_P_ ev_child *w) 2412ev_child_start (EV_P_ ev_child *w)
2218{ 2413{
2219#if EV_MULTIPLICITY 2414#if EV_MULTIPLICITY
2220 assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); 2415 assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2221#endif 2416#endif
2222 if (expect_false (ev_is_active (w))) 2417 if (expect_false (ev_is_active (w)))
2223 return; 2418 return;
2224 2419
2420 EV_FREQUENT_CHECK;
2421
2225 ev_start (EV_A_ (W)w, 1); 2422 ev_start (EV_A_ (W)w, 1);
2226 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2423 wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2424
2425 EV_FREQUENT_CHECK;
2227} 2426}
2228 2427
2229void 2428void
2230ev_child_stop (EV_P_ ev_child *w) 2429ev_child_stop (EV_P_ ev_child *w)
2231{ 2430{
2232 clear_pending (EV_A_ (W)w); 2431 clear_pending (EV_A_ (W)w);
2233 if (expect_false (!ev_is_active (w))) 2432 if (expect_false (!ev_is_active (w)))
2234 return; 2433 return;
2235 2434
2435 EV_FREQUENT_CHECK;
2436
2236 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); 2437 wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2237 ev_stop (EV_A_ (W)w); 2438 ev_stop (EV_A_ (W)w);
2439
2440 EV_FREQUENT_CHECK;
2238} 2441}
2239 2442
2240#if EV_STAT_ENABLE 2443#if EV_STAT_ENABLE
2241 2444
2242# ifdef _WIN32 2445# ifdef _WIN32
2243# undef lstat 2446# undef lstat
2244# define lstat(a,b) _stati64 (a,b) 2447# define lstat(a,b) _stati64 (a,b)
2245# endif 2448# endif
2246 2449
2247#define DEF_STAT_INTERVAL 5.0074891 2450#define DEF_STAT_INTERVAL 5.0074891
2451#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2248#define MIN_STAT_INTERVAL 0.1074891 2452#define MIN_STAT_INTERVAL 0.1074891
2249 2453
2250static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); 2454static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2251 2455
2252#if EV_USE_INOTIFY 2456#if EV_USE_INOTIFY
2253# define EV_INOTIFY_BUFSIZE 8192 2457# define EV_INOTIFY_BUFSIZE 8192
2257{ 2461{
2258 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); 2462 w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2259 2463
2260 if (w->wd < 0) 2464 if (w->wd < 0)
2261 { 2465 {
2466 w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2262 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2467 ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2263 2468
2264 /* monitor some parent directory for speedup hints */ 2469 /* monitor some parent directory for speedup hints */
2265 /* note that exceeding the hardcoded limit is not a correctness issue, */ 2470 /* note that exceeding the hardcoded path limit is not a correctness issue, */
2266 /* but an efficiency issue only */ 2471 /* but an efficiency issue only */
2267 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2472 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2268 { 2473 {
2269 char path [4096]; 2474 char path [4096];
2270 strcpy (path, w->path); 2475 strcpy (path, w->path);
2274 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF 2479 int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2275 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); 2480 | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2276 2481
2277 char *pend = strrchr (path, '/'); 2482 char *pend = strrchr (path, '/');
2278 2483
2279 if (!pend) 2484 if (!pend || pend == path)
2280 break; /* whoops, no '/', complain to your admin */ 2485 break;
2281 2486
2282 *pend = 0; 2487 *pend = 0;
2283 w->wd = inotify_add_watch (fs_fd, path, mask); 2488 w->wd = inotify_add_watch (fs_fd, path, mask);
2284 } 2489 }
2285 while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); 2490 while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2286 } 2491 }
2287 } 2492 }
2288 else
2289 ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2290 2493
2291 if (w->wd >= 0) 2494 if (w->wd >= 0)
2495 {
2292 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); 2496 wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2497
2498 /* now local changes will be tracked by inotify, but remote changes won't */
2499 /* unless the filesystem it known to be local, we therefore still poll */
2500 /* also do poll on <2.6.25, but with normal frequency */
2501 struct statfs sfs;
2502
2503 if (fs_2625 && !statfs (w->path, &sfs))
2504 if (sfs.f_type == 0x1373 /* devfs */
2505 || sfs.f_type == 0xEF53 /* ext2/3 */
2506 || sfs.f_type == 0x3153464a /* jfs */
2507 || sfs.f_type == 0x52654973 /* reiser3 */
2508 || sfs.f_type == 0x01021994 /* tempfs */
2509 || sfs.f_type == 0x58465342 /* xfs */)
2510 return;
2511
2512 w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2513 ev_timer_again (EV_A_ &w->timer);
2514 }
2293} 2515}
2294 2516
2295static void noinline 2517static void noinline
2296infy_del (EV_P_ ev_stat *w) 2518infy_del (EV_P_ ev_stat *w)
2297{ 2519{
2311 2533
2312static void noinline 2534static void noinline
2313infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) 2535infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2314{ 2536{
2315 if (slot < 0) 2537 if (slot < 0)
2316 /* overflow, need to check for all hahs slots */ 2538 /* overflow, need to check for all hash slots */
2317 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) 2539 for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2318 infy_wd (EV_A_ slot, wd, ev); 2540 infy_wd (EV_A_ slot, wd, ev);
2319 else 2541 else
2320 { 2542 {
2321 WL w_; 2543 WL w_;
2327 2549
2328 if (w->wd == wd || wd == -1) 2550 if (w->wd == wd || wd == -1)
2329 { 2551 {
2330 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) 2552 if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2331 { 2553 {
2554 wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2332 w->wd = -1; 2555 w->wd = -1;
2333 infy_add (EV_A_ w); /* re-add, no matter what */ 2556 infy_add (EV_A_ w); /* re-add, no matter what */
2334 } 2557 }
2335 2558
2336 stat_timer_cb (EV_A_ &w->timer, 0); 2559 stat_timer_cb (EV_A_ &w->timer, 0);
2350 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) 2573 for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2351 infy_wd (EV_A_ ev->wd, ev->wd, ev); 2574 infy_wd (EV_A_ ev->wd, ev->wd, ev);
2352} 2575}
2353 2576
2354void inline_size 2577void inline_size
2578check_2625 (EV_P)
2579{
2580 /* kernels < 2.6.25 are borked
2581 * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2582 */
2583 struct utsname buf;
2584 int major, minor, micro;
2585
2586 if (uname (&buf))
2587 return;
2588
2589 if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2590 return;
2591
2592 if (major < 2
2593 || (major == 2 && minor < 6)
2594 || (major == 2 && minor == 6 && micro < 25))
2595 return;
2596
2597 fs_2625 = 1;
2598}
2599
2600void inline_size
2355infy_init (EV_P) 2601infy_init (EV_P)
2356{ 2602{
2357 if (fs_fd != -2) 2603 if (fs_fd != -2)
2358 return; 2604 return;
2605
2606 fs_fd = -1;
2607
2608 check_2625 (EV_A);
2359 2609
2360 fs_fd = inotify_init (); 2610 fs_fd = inotify_init ();
2361 2611
2362 if (fs_fd >= 0) 2612 if (fs_fd >= 0)
2363 { 2613 {
2391 w->wd = -1; 2641 w->wd = -1;
2392 2642
2393 if (fs_fd >= 0) 2643 if (fs_fd >= 0)
2394 infy_add (EV_A_ w); /* re-add, no matter what */ 2644 infy_add (EV_A_ w); /* re-add, no matter what */
2395 else 2645 else
2396 ev_timer_start (EV_A_ &w->timer); 2646 ev_timer_again (EV_A_ &w->timer);
2397 } 2647 }
2398
2399 } 2648 }
2400} 2649}
2401 2650
2651#endif
2652
2653#ifdef _WIN32
2654# define EV_LSTAT(p,b) _stati64 (p, b)
2655#else
2656# define EV_LSTAT(p,b) lstat (p, b)
2402#endif 2657#endif
2403 2658
2404void 2659void
2405ev_stat_stat (EV_P_ ev_stat *w) 2660ev_stat_stat (EV_P_ ev_stat *w)
2406{ 2661{
2433 || w->prev.st_atime != w->attr.st_atime 2688 || w->prev.st_atime != w->attr.st_atime
2434 || w->prev.st_mtime != w->attr.st_mtime 2689 || w->prev.st_mtime != w->attr.st_mtime
2435 || w->prev.st_ctime != w->attr.st_ctime 2690 || w->prev.st_ctime != w->attr.st_ctime
2436 ) { 2691 ) {
2437 #if EV_USE_INOTIFY 2692 #if EV_USE_INOTIFY
2693 if (fs_fd >= 0)
2694 {
2438 infy_del (EV_A_ w); 2695 infy_del (EV_A_ w);
2439 infy_add (EV_A_ w); 2696 infy_add (EV_A_ w);
2440 ev_stat_stat (EV_A_ w); /* avoid race... */ 2697 ev_stat_stat (EV_A_ w); /* avoid race... */
2698 }
2441 #endif 2699 #endif
2442 2700
2443 ev_feed_event (EV_A_ w, EV_STAT); 2701 ev_feed_event (EV_A_ w, EV_STAT);
2444 } 2702 }
2445} 2703}
2448ev_stat_start (EV_P_ ev_stat *w) 2706ev_stat_start (EV_P_ ev_stat *w)
2449{ 2707{
2450 if (expect_false (ev_is_active (w))) 2708 if (expect_false (ev_is_active (w)))
2451 return; 2709 return;
2452 2710
2453 /* since we use memcmp, we need to clear any padding data etc. */
2454 memset (&w->prev, 0, sizeof (ev_statdata));
2455 memset (&w->attr, 0, sizeof (ev_statdata));
2456
2457 ev_stat_stat (EV_A_ w); 2711 ev_stat_stat (EV_A_ w);
2458 2712
2713 if (w->interval < MIN_STAT_INTERVAL && w->interval)
2459 if (w->interval < MIN_STAT_INTERVAL) 2714 w->interval = MIN_STAT_INTERVAL;
2460 w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2461 2715
2462 ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); 2716 ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2463 ev_set_priority (&w->timer, ev_priority (w)); 2717 ev_set_priority (&w->timer, ev_priority (w));
2464 2718
2465#if EV_USE_INOTIFY 2719#if EV_USE_INOTIFY
2466 infy_init (EV_A); 2720 infy_init (EV_A);
2467 2721
2468 if (fs_fd >= 0) 2722 if (fs_fd >= 0)
2469 infy_add (EV_A_ w); 2723 infy_add (EV_A_ w);
2470 else 2724 else
2471#endif 2725#endif
2472 ev_timer_start (EV_A_ &w->timer); 2726 ev_timer_again (EV_A_ &w->timer);
2473 2727
2474 ev_start (EV_A_ (W)w, 1); 2728 ev_start (EV_A_ (W)w, 1);
2729
2730 EV_FREQUENT_CHECK;
2475} 2731}
2476 2732
2477void 2733void
2478ev_stat_stop (EV_P_ ev_stat *w) 2734ev_stat_stop (EV_P_ ev_stat *w)
2479{ 2735{
2480 clear_pending (EV_A_ (W)w); 2736 clear_pending (EV_A_ (W)w);
2481 if (expect_false (!ev_is_active (w))) 2737 if (expect_false (!ev_is_active (w)))
2482 return; 2738 return;
2483 2739
2740 EV_FREQUENT_CHECK;
2741
2484#if EV_USE_INOTIFY 2742#if EV_USE_INOTIFY
2485 infy_del (EV_A_ w); 2743 infy_del (EV_A_ w);
2486#endif 2744#endif
2487 ev_timer_stop (EV_A_ &w->timer); 2745 ev_timer_stop (EV_A_ &w->timer);
2488 2746
2489 ev_stop (EV_A_ (W)w); 2747 ev_stop (EV_A_ (W)w);
2748
2749 EV_FREQUENT_CHECK;
2490} 2750}
2491#endif 2751#endif
2492 2752
2493#if EV_IDLE_ENABLE 2753#if EV_IDLE_ENABLE
2494void 2754void
2496{ 2756{
2497 if (expect_false (ev_is_active (w))) 2757 if (expect_false (ev_is_active (w)))
2498 return; 2758 return;
2499 2759
2500 pri_adjust (EV_A_ (W)w); 2760 pri_adjust (EV_A_ (W)w);
2761
2762 EV_FREQUENT_CHECK;
2501 2763
2502 { 2764 {
2503 int active = ++idlecnt [ABSPRI (w)]; 2765 int active = ++idlecnt [ABSPRI (w)];
2504 2766
2505 ++idleall; 2767 ++idleall;
2506 ev_start (EV_A_ (W)w, active); 2768 ev_start (EV_A_ (W)w, active);
2507 2769
2508 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); 2770 array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2509 idles [ABSPRI (w)][active - 1] = w; 2771 idles [ABSPRI (w)][active - 1] = w;
2510 } 2772 }
2773
2774 EV_FREQUENT_CHECK;
2511} 2775}
2512 2776
2513void 2777void
2514ev_idle_stop (EV_P_ ev_idle *w) 2778ev_idle_stop (EV_P_ ev_idle *w)
2515{ 2779{
2516 clear_pending (EV_A_ (W)w); 2780 clear_pending (EV_A_ (W)w);
2517 if (expect_false (!ev_is_active (w))) 2781 if (expect_false (!ev_is_active (w)))
2518 return; 2782 return;
2519 2783
2784 EV_FREQUENT_CHECK;
2785
2520 { 2786 {
2521 int active = ev_active (w); 2787 int active = ev_active (w);
2522 2788
2523 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 2789 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2524 ev_active (idles [ABSPRI (w)][active - 1]) = active; 2790 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2525 2791
2526 ev_stop (EV_A_ (W)w); 2792 ev_stop (EV_A_ (W)w);
2527 --idleall; 2793 --idleall;
2528 } 2794 }
2795
2796 EV_FREQUENT_CHECK;
2529} 2797}
2530#endif 2798#endif
2531 2799
2532void 2800void
2533ev_prepare_start (EV_P_ ev_prepare *w) 2801ev_prepare_start (EV_P_ ev_prepare *w)
2534{ 2802{
2535 if (expect_false (ev_is_active (w))) 2803 if (expect_false (ev_is_active (w)))
2536 return; 2804 return;
2805
2806 EV_FREQUENT_CHECK;
2537 2807
2538 ev_start (EV_A_ (W)w, ++preparecnt); 2808 ev_start (EV_A_ (W)w, ++preparecnt);
2539 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); 2809 array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2540 prepares [preparecnt - 1] = w; 2810 prepares [preparecnt - 1] = w;
2811
2812 EV_FREQUENT_CHECK;
2541} 2813}
2542 2814
2543void 2815void
2544ev_prepare_stop (EV_P_ ev_prepare *w) 2816ev_prepare_stop (EV_P_ ev_prepare *w)
2545{ 2817{
2546 clear_pending (EV_A_ (W)w); 2818 clear_pending (EV_A_ (W)w);
2547 if (expect_false (!ev_is_active (w))) 2819 if (expect_false (!ev_is_active (w)))
2548 return; 2820 return;
2549 2821
2822 EV_FREQUENT_CHECK;
2823
2550 { 2824 {
2551 int active = ev_active (w); 2825 int active = ev_active (w);
2552 2826
2553 prepares [active - 1] = prepares [--preparecnt]; 2827 prepares [active - 1] = prepares [--preparecnt];
2554 ev_active (prepares [active - 1]) = active; 2828 ev_active (prepares [active - 1]) = active;
2555 } 2829 }
2556 2830
2557 ev_stop (EV_A_ (W)w); 2831 ev_stop (EV_A_ (W)w);
2832
2833 EV_FREQUENT_CHECK;
2558} 2834}
2559 2835
2560void 2836void
2561ev_check_start (EV_P_ ev_check *w) 2837ev_check_start (EV_P_ ev_check *w)
2562{ 2838{
2563 if (expect_false (ev_is_active (w))) 2839 if (expect_false (ev_is_active (w)))
2564 return; 2840 return;
2841
2842 EV_FREQUENT_CHECK;
2565 2843
2566 ev_start (EV_A_ (W)w, ++checkcnt); 2844 ev_start (EV_A_ (W)w, ++checkcnt);
2567 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); 2845 array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2568 checks [checkcnt - 1] = w; 2846 checks [checkcnt - 1] = w;
2847
2848 EV_FREQUENT_CHECK;
2569} 2849}
2570 2850
2571void 2851void
2572ev_check_stop (EV_P_ ev_check *w) 2852ev_check_stop (EV_P_ ev_check *w)
2573{ 2853{
2574 clear_pending (EV_A_ (W)w); 2854 clear_pending (EV_A_ (W)w);
2575 if (expect_false (!ev_is_active (w))) 2855 if (expect_false (!ev_is_active (w)))
2576 return; 2856 return;
2577 2857
2858 EV_FREQUENT_CHECK;
2859
2578 { 2860 {
2579 int active = ev_active (w); 2861 int active = ev_active (w);
2580 2862
2581 checks [active - 1] = checks [--checkcnt]; 2863 checks [active - 1] = checks [--checkcnt];
2582 ev_active (checks [active - 1]) = active; 2864 ev_active (checks [active - 1]) = active;
2583 } 2865 }
2584 2866
2585 ev_stop (EV_A_ (W)w); 2867 ev_stop (EV_A_ (W)w);
2868
2869 EV_FREQUENT_CHECK;
2586} 2870}
2587 2871
2588#if EV_EMBED_ENABLE 2872#if EV_EMBED_ENABLE
2589void noinline 2873void noinline
2590ev_embed_sweep (EV_P_ ev_embed *w) 2874ev_embed_sweep (EV_P_ ev_embed *w)
2617 ev_loop (EV_A_ EVLOOP_NONBLOCK); 2901 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2618 } 2902 }
2619 } 2903 }
2620} 2904}
2621 2905
2906static void
2907embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2908{
2909 ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2910
2911 ev_embed_stop (EV_A_ w);
2912
2913 {
2914 struct ev_loop *loop = w->other;
2915
2916 ev_loop_fork (EV_A);
2917 ev_loop (EV_A_ EVLOOP_NONBLOCK);
2918 }
2919
2920 ev_embed_start (EV_A_ w);
2921}
2922
2622#if 0 2923#if 0
2623static void 2924static void
2624embed_idle_cb (EV_P_ ev_idle *idle, int revents) 2925embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2625{ 2926{
2626 ev_idle_stop (EV_A_ idle); 2927 ev_idle_stop (EV_A_ idle);
2633 if (expect_false (ev_is_active (w))) 2934 if (expect_false (ev_is_active (w)))
2634 return; 2935 return;
2635 2936
2636 { 2937 {
2637 struct ev_loop *loop = w->other; 2938 struct ev_loop *loop = w->other;
2638 assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); 2939 assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2639 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); 2940 ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2640 } 2941 }
2942
2943 EV_FREQUENT_CHECK;
2641 2944
2642 ev_set_priority (&w->io, ev_priority (w)); 2945 ev_set_priority (&w->io, ev_priority (w));
2643 ev_io_start (EV_A_ &w->io); 2946 ev_io_start (EV_A_ &w->io);
2644 2947
2645 ev_prepare_init (&w->prepare, embed_prepare_cb); 2948 ev_prepare_init (&w->prepare, embed_prepare_cb);
2646 ev_set_priority (&w->prepare, EV_MINPRI); 2949 ev_set_priority (&w->prepare, EV_MINPRI);
2647 ev_prepare_start (EV_A_ &w->prepare); 2950 ev_prepare_start (EV_A_ &w->prepare);
2648 2951
2952 ev_fork_init (&w->fork, embed_fork_cb);
2953 ev_fork_start (EV_A_ &w->fork);
2954
2649 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ 2955 /*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2650 2956
2651 ev_start (EV_A_ (W)w, 1); 2957 ev_start (EV_A_ (W)w, 1);
2958
2959 EV_FREQUENT_CHECK;
2652} 2960}
2653 2961
2654void 2962void
2655ev_embed_stop (EV_P_ ev_embed *w) 2963ev_embed_stop (EV_P_ ev_embed *w)
2656{ 2964{
2657 clear_pending (EV_A_ (W)w); 2965 clear_pending (EV_A_ (W)w);
2658 if (expect_false (!ev_is_active (w))) 2966 if (expect_false (!ev_is_active (w)))
2659 return; 2967 return;
2660 2968
2969 EV_FREQUENT_CHECK;
2970
2661 ev_io_stop (EV_A_ &w->io); 2971 ev_io_stop (EV_A_ &w->io);
2662 ev_prepare_stop (EV_A_ &w->prepare); 2972 ev_prepare_stop (EV_A_ &w->prepare);
2973 ev_fork_stop (EV_A_ &w->fork);
2663 2974
2664 ev_stop (EV_A_ (W)w); 2975 EV_FREQUENT_CHECK;
2665} 2976}
2666#endif 2977#endif
2667 2978
2668#if EV_FORK_ENABLE 2979#if EV_FORK_ENABLE
2669void 2980void
2670ev_fork_start (EV_P_ ev_fork *w) 2981ev_fork_start (EV_P_ ev_fork *w)
2671{ 2982{
2672 if (expect_false (ev_is_active (w))) 2983 if (expect_false (ev_is_active (w)))
2673 return; 2984 return;
2985
2986 EV_FREQUENT_CHECK;
2674 2987
2675 ev_start (EV_A_ (W)w, ++forkcnt); 2988 ev_start (EV_A_ (W)w, ++forkcnt);
2676 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); 2989 array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2677 forks [forkcnt - 1] = w; 2990 forks [forkcnt - 1] = w;
2991
2992 EV_FREQUENT_CHECK;
2678} 2993}
2679 2994
2680void 2995void
2681ev_fork_stop (EV_P_ ev_fork *w) 2996ev_fork_stop (EV_P_ ev_fork *w)
2682{ 2997{
2683 clear_pending (EV_A_ (W)w); 2998 clear_pending (EV_A_ (W)w);
2684 if (expect_false (!ev_is_active (w))) 2999 if (expect_false (!ev_is_active (w)))
2685 return; 3000 return;
2686 3001
3002 EV_FREQUENT_CHECK;
3003
2687 { 3004 {
2688 int active = ev_active (w); 3005 int active = ev_active (w);
2689 3006
2690 forks [active - 1] = forks [--forkcnt]; 3007 forks [active - 1] = forks [--forkcnt];
2691 ev_active (forks [active - 1]) = active; 3008 ev_active (forks [active - 1]) = active;
2692 } 3009 }
2693 3010
2694 ev_stop (EV_A_ (W)w); 3011 ev_stop (EV_A_ (W)w);
3012
3013 EV_FREQUENT_CHECK;
2695} 3014}
2696#endif 3015#endif
2697 3016
2698#if EV_ASYNC_ENABLE 3017#if EV_ASYNC_ENABLE
2699void 3018void
2701{ 3020{
2702 if (expect_false (ev_is_active (w))) 3021 if (expect_false (ev_is_active (w)))
2703 return; 3022 return;
2704 3023
2705 evpipe_init (EV_A); 3024 evpipe_init (EV_A);
3025
3026 EV_FREQUENT_CHECK;
2706 3027
2707 ev_start (EV_A_ (W)w, ++asynccnt); 3028 ev_start (EV_A_ (W)w, ++asynccnt);
2708 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); 3029 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2709 asyncs [asynccnt - 1] = w; 3030 asyncs [asynccnt - 1] = w;
3031
3032 EV_FREQUENT_CHECK;
2710} 3033}
2711 3034
2712void 3035void
2713ev_async_stop (EV_P_ ev_async *w) 3036ev_async_stop (EV_P_ ev_async *w)
2714{ 3037{
2715 clear_pending (EV_A_ (W)w); 3038 clear_pending (EV_A_ (W)w);
2716 if (expect_false (!ev_is_active (w))) 3039 if (expect_false (!ev_is_active (w)))
2717 return; 3040 return;
2718 3041
3042 EV_FREQUENT_CHECK;
3043
2719 { 3044 {
2720 int active = ev_active (w); 3045 int active = ev_active (w);
2721 3046
2722 asyncs [active - 1] = asyncs [--asynccnt]; 3047 asyncs [active - 1] = asyncs [--asynccnt];
2723 ev_active (asyncs [active - 1]) = active; 3048 ev_active (asyncs [active - 1]) = active;
2724 } 3049 }
2725 3050
2726 ev_stop (EV_A_ (W)w); 3051 ev_stop (EV_A_ (W)w);
3052
3053 EV_FREQUENT_CHECK;
2727} 3054}
2728 3055
2729void 3056void
2730ev_async_send (EV_P_ ev_async *w) 3057ev_async_send (EV_P_ ev_async *w)
2731{ 3058{
2748once_cb (EV_P_ struct ev_once *once, int revents) 3075once_cb (EV_P_ struct ev_once *once, int revents)
2749{ 3076{
2750 void (*cb)(int revents, void *arg) = once->cb; 3077 void (*cb)(int revents, void *arg) = once->cb;
2751 void *arg = once->arg; 3078 void *arg = once->arg;
2752 3079
2753 ev_io_stop (EV_A_ &once->io); 3080 ev_io_stop (EV_A_ &once->io);
2754 ev_timer_stop (EV_A_ &once->to); 3081 ev_timer_stop (EV_A_ &once->to);
2755 ev_free (once); 3082 ev_free (once);
2756 3083
2757 cb (revents, arg); 3084 cb (revents, arg);
2758} 3085}
2759 3086
2760static void 3087static void
2761once_cb_io (EV_P_ ev_io *w, int revents) 3088once_cb_io (EV_P_ ev_io *w, int revents)
2762{ 3089{
2763 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); 3090 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
3091
3092 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2764} 3093}
2765 3094
2766static void 3095static void
2767once_cb_to (EV_P_ ev_timer *w, int revents) 3096once_cb_to (EV_P_ ev_timer *w, int revents)
2768{ 3097{
2769 once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); 3098 struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
3099
3100 once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2770} 3101}
2771 3102
2772void 3103void
2773ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) 3104ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2774{ 3105{

Diff Legend

Removed lines
+ Added lines
< Changed lines
> Changed lines