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Comparing libev/ev.c (file contents):
Revision 1.204 by root, Fri Jan 18 13:45:55 2008 UTC vs.
Revision 1.237 by root, Wed May 7 15:16:56 2008 UTC

1/* 1/*
2 * libev event processing core, watcher management 2 * libev event processing core, watcher management
3 * 3 *
4 * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without 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 *
… …
39 39
40#ifdef __cplusplus 40#ifdef __cplusplus
41extern "C" { 41extern "C" {
42#endif 42#endif
43 43
44/* this big block deduces configuration from config.h */
44#ifndef EV_STANDALONE 45#ifndef EV_STANDALONE
45# ifdef EV_CONFIG_H 46# ifdef EV_CONFIG_H
46# include EV_CONFIG_H 47# include EV_CONFIG_H
47# else 48# else
48# include "config.h" 49# include "config.h"
… …
118# else 119# else
119# define EV_USE_INOTIFY 0 120# define EV_USE_INOTIFY 0
120# endif 121# endif
121# endif 122# endif
122 123
124# ifndef EV_USE_EVENTFD
125# if HAVE_EVENTFD
126# define EV_USE_EVENTFD 1
127# else
128# define EV_USE_EVENTFD 0
129# endif
130# endif
131
123#endif 132#endif
124 133
125#include <math.h> 134#include <math.h>
126#include <stdlib.h> 135#include <stdlib.h>
127#include <fcntl.h> 136#include <fcntl.h>
… …
152# ifndef EV_SELECT_IS_WINSOCKET 161# ifndef EV_SELECT_IS_WINSOCKET
153# define EV_SELECT_IS_WINSOCKET 1 162# define EV_SELECT_IS_WINSOCKET 1
154# endif 163# endif
155#endif 164#endif
156 165
157/**/ 166/* this block tries to deduce configuration from header-defined symbols and defaults */
158 167
159#ifndef EV_USE_MONOTONIC 168#ifndef EV_USE_MONOTONIC
160# define EV_USE_MONOTONIC 0 169# define EV_USE_MONOTONIC 0
161#endif 170#endif
162 171
… …
179# define EV_USE_POLL 1 188# define EV_USE_POLL 1
180# endif 189# endif
181#endif 190#endif
182 191
183#ifndef EV_USE_EPOLL 192#ifndef EV_USE_EPOLL
193# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194# define EV_USE_EPOLL 1
195# else
184# define EV_USE_EPOLL 0 196# define EV_USE_EPOLL 0
197# endif
185#endif 198#endif
186 199
187#ifndef EV_USE_KQUEUE 200#ifndef EV_USE_KQUEUE
188# define EV_USE_KQUEUE 0 201# define EV_USE_KQUEUE 0
189#endif 202#endif
… …
191#ifndef EV_USE_PORT 204#ifndef EV_USE_PORT
192# define EV_USE_PORT 0 205# define EV_USE_PORT 0
193#endif 206#endif
194 207
195#ifndef EV_USE_INOTIFY 208#ifndef EV_USE_INOTIFY
209# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210# define EV_USE_INOTIFY 1
211# else
196# define EV_USE_INOTIFY 0 212# define EV_USE_INOTIFY 0
213# endif
197#endif 214#endif
198 215
199#ifndef EV_PID_HASHSIZE 216#ifndef EV_PID_HASHSIZE
200# if EV_MINIMAL 217# if EV_MINIMAL
201# define EV_PID_HASHSIZE 1 218# define EV_PID_HASHSIZE 1
… …
210# else 227# else
211# define EV_INOTIFY_HASHSIZE 16 228# define EV_INOTIFY_HASHSIZE 16
212# endif 229# endif
213#endif 230#endif
214 231
215/**/ 232#ifndef EV_USE_EVENTFD
233# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234# define EV_USE_EVENTFD 1
235# else
236# define EV_USE_EVENTFD 0
237# endif
238#endif
239
240/* this block fixes any misconfiguration where we know we run into trouble otherwise */
216 241
217#ifndef CLOCK_MONOTONIC 242#ifndef CLOCK_MONOTONIC
218# undef EV_USE_MONOTONIC 243# undef EV_USE_MONOTONIC
219# define EV_USE_MONOTONIC 0 244# define EV_USE_MONOTONIC 0
220#endif 245#endif
… …
239# include <sys/inotify.h> 264# include <sys/inotify.h>
240#endif 265#endif
241 266
242#if EV_SELECT_IS_WINSOCKET 267#if EV_SELECT_IS_WINSOCKET
243# include <winsock.h> 268# include <winsock.h>
269#endif
270
271#if EV_USE_EVENTFD
272/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
273# include <stdint.h>
274# ifdef __cplusplus
275extern "C" {
276# endif
277int eventfd (unsigned int initval, int flags);
278# ifdef __cplusplus
279}
280# endif
244#endif 281#endif
245 282
246/**/ 283/**/
247 284
248/* 285/*
… …
263# define expect(expr,value) __builtin_expect ((expr),(value)) 300# define expect(expr,value) __builtin_expect ((expr),(value))
264# define noinline __attribute__ ((noinline)) 301# define noinline __attribute__ ((noinline))
265#else 302#else
266# define expect(expr,value) (expr) 303# define expect(expr,value) (expr)
267# define noinline 304# define noinline
268# if __STDC_VERSION__ < 199901L 305# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
269# define inline 306# define inline
270# endif 307# endif
271#endif 308#endif
272 309
273#define expect_false(expr) expect ((expr) != 0, 0) 310#define expect_false(expr) expect ((expr) != 0, 0)
… …
288 325
289typedef ev_watcher *W; 326typedef ev_watcher *W;
290typedef ev_watcher_list *WL; 327typedef ev_watcher_list *WL;
291typedef ev_watcher_time *WT; 328typedef ev_watcher_time *WT;
292 329
330#define ev_active(w) ((W)(w))->active
331#define ev_at(w) ((WT)(w))->at
332
293#if EV_USE_MONOTONIC 333#if EV_USE_MONOTONIC
294/* sig_atomic_t is used to avoid per-thread variables or locking but still */ 334/* sig_atomic_t is used to avoid per-thread variables or locking but still */
295/* giving it a reasonably high chance of working on typical architetcures */ 335/* giving it a reasonably high chance of working on typical architetcures */
296static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ 336static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
297#endif 337#endif
298 338
299#ifdef _WIN32 339#ifdef _WIN32
300# include "ev_win32.c" 340# include "ev_win32.c"
301#endif 341#endif
… …
323 perror (msg); 363 perror (msg);
324 abort (); 364 abort ();
325 } 365 }
326} 366}
327 367
368static void *
369ev_realloc_emul (void *ptr, long size)
370{
371 /* some systems, notably openbsd and darwin, fail to properly
372 * implement realloc (x, 0) (as required by both ansi c-98 and
373 * the single unix specification, so work around them here.
374 */
375
376 if (size)
377 return realloc (ptr, size);
378
379 free (ptr);
380 return 0;
381}
382
328static void *(*alloc)(void *ptr, long size); 383static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
329 384
330void 385void
331ev_set_allocator (void *(*cb)(void *ptr, long size)) 386ev_set_allocator (void *(*cb)(void *ptr, long size))
332{ 387{
333 alloc = cb; 388 alloc = cb;
334} 389}
335 390
336inline_speed void * 391inline_speed void *
337ev_realloc (void *ptr, long size) 392ev_realloc (void *ptr, long size)
338{ 393{
339 ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); 394 ptr = alloc (ptr, size);
340 395
341 if (!ptr && size) 396 if (!ptr && size)
342 { 397 {
343 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); 398 fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
344 abort (); 399 abort ();
… …
451 ts.tv_sec = (time_t)delay; 506 ts.tv_sec = (time_t)delay;
452 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); 507 ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
453 508
454 nanosleep (&ts, 0); 509 nanosleep (&ts, 0);
455#elif defined(_WIN32) 510#elif defined(_WIN32)
456 Sleep (delay * 1e3); 511 Sleep ((unsigned long)(delay * 1e3));
457#else 512#else
458 struct timeval tv; 513 struct timeval tv;
459 514
460 tv.tv_sec = (time_t)delay; 515 tv.tv_sec = (time_t)delay;
461 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); 516 tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
… …
464#endif 519#endif
465 } 520 }
466} 521}
467 522
468/*****************************************************************************/ 523/*****************************************************************************/
524
525#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
469 526
470int inline_size 527int inline_size
471array_nextsize (int elem, int cur, int cnt) 528array_nextsize (int elem, int cur, int cnt)
472{ 529{
473 int ncur = cur + 1; 530 int ncur = cur + 1;
474 531
475 do 532 do
476 ncur <<= 1; 533 ncur <<= 1;
477 while (cnt > ncur); 534 while (cnt > ncur);
478 535
479 /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ 536 /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
480 if (elem * ncur > 4096) 537 if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
481 { 538 {
482 ncur *= elem; 539 ncur *= elem;
483 ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; 540 ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
484 ncur = ncur - sizeof (void *) * 4; 541 ncur = ncur - sizeof (void *) * 4;
485 ncur /= elem; 542 ncur /= elem;
486 } 543 }
487 544
488 return ncur; 545 return ncur;
… …
702 } 759 }
703} 760}
704 761
705/*****************************************************************************/ 762/*****************************************************************************/
706 763
764/*
765 * at the moment we allow libev the luxury of two heaps,
766 * a small-code-size 2-heap one and a ~1.5kb larger 4-heap
767 * which is more cache-efficient.
768 * the difference is about 5% with 50000+ watchers.
769 */
770#define USE_4HEAP !EV_MINIMAL
771#if USE_4HEAP
772
773#define DHEAP 4
774#define HEAP0 (DHEAP - 1) /* index of first element in heap */
775
776/* towards the root */
707void inline_speed 777void inline_speed
708upheap (WT *heap, int k) 778upheap (WT *heap, int k)
709{ 779{
710 WT w = heap [k]; 780 WT w = heap [k];
711 781
712 while (k) 782 for (;;)
713 { 783 {
714 int p = (k - 1) >> 1; 784 int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
715 785
716 if (heap [p]->at <= w->at) 786 if (p >= HEAP0 || heap [p]->at <= w->at)
717 break; 787 break;
718 788
719 heap [k] = heap [p]; 789 heap [k] = heap [p];
720 ((W)heap [k])->active = k + 1; 790 ev_active (heap [k]) = k;
721 k = p; 791 k = p;
722 } 792 }
723 793
724 heap [k] = w; 794 heap [k] = w;
725 ((W)heap [k])->active = k + 1; 795 ev_active (heap [k]) = k;
726} 796}
727 797
798/* away from the root */
728void inline_speed 799void inline_speed
729downheap (WT *heap, int N, int k) 800downheap (WT *heap, int N, int k)
730{ 801{
731 WT w = heap [k]; 802 WT w = heap [k];
803 WT *E = heap + N + HEAP0;
732 804
733 for (;;) 805 for (;;)
734 { 806 {
807 ev_tstamp minat;
808 WT *minpos;
809 WT *pos = heap + DHEAP * (k - HEAP0) + HEAP0;
810
811 // find minimum child
812 if (expect_true (pos + DHEAP - 1 < E))
813 {
814 /* fast path */
815 (minpos = pos + 0), (minat = (*minpos)->at);
816 if (pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);
817 if (pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);
818 if (pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);
819 }
820 else
821 {
822 /* slow path */
823 if (pos >= E)
824 break;
825 (minpos = pos + 0), (minat = (*minpos)->at);
826 if (pos + 1 < E && pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);
827 if (pos + 2 < E && pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);
828 if (pos + 3 < E && pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);
829 }
830
831 if (w->at <= minat)
832 break;
833
834 ev_active (*minpos) = k;
835 heap [k] = *minpos;
836
837 k = minpos - heap;
838 }
839
840 heap [k] = w;
841 ev_active (heap [k]) = k;
842}
843
844#else // 4HEAP
845
846#define HEAP0 1
847
848/* towards the root */
849void inline_speed
850upheap (WT *heap, int k)
851{
852 WT w = heap [k];
853
854 for (;;)
855 {
856 int p = k >> 1;
857
858 /* maybe we could use a dummy element at heap [0]? */
859 if (!p || heap [p]->at <= w->at)
860 break;
861
862 heap [k] = heap [p];
863 ev_active (heap [k]) = k;
864 k = p;
865 }
866
867 heap [k] = w;
868 ev_active (heap [k]) = k;
869}
870
871/* away from the root */
872void inline_speed
873downheap (WT *heap, int N, int k)
874{
875 WT w = heap [k];
876
877 for (;;)
878 {
735 int c = (k << 1) + 1; 879 int c = k << 1;
736 880
737 if (c >= N) 881 if (c > N)
738 break; 882 break;
739 883
740 c += c + 1 < N && heap [c]->at > heap [c + 1]->at 884 c += c + 1 < N && heap [c]->at > heap [c + 1]->at
741 ? 1 : 0; 885 ? 1 : 0;
742 886
743 if (w->at <= heap [c]->at) 887 if (w->at <= heap [c]->at)
744 break; 888 break;
745 889
746 heap [k] = heap [c]; 890 heap [k] = heap [c];
747 ((W)heap [k])->active = k + 1; 891 ((W)heap [k])->active = k;
748 892
749 k = c; 893 k = c;
750 } 894 }
751 895
752 heap [k] = w; 896 heap [k] = w;
753 ((W)heap [k])->active = k + 1; 897 ev_active (heap [k]) = k;
754} 898}
899#endif
755 900
756void inline_size 901void inline_size
757adjustheap (WT *heap, int N, int k) 902adjustheap (WT *heap, int N, int k)
758{ 903{
759 upheap (heap, k); 904 upheap (heap, k);
… …
763/*****************************************************************************/ 908/*****************************************************************************/
764 909
765typedef struct 910typedef struct
766{ 911{
767 WL head; 912 WL head;
768 sig_atomic_t volatile gotsig; 913 EV_ATOMIC_T gotsig;
769} ANSIG; 914} ANSIG;
770 915
771static ANSIG *signals; 916static ANSIG *signals;
772static int signalmax; 917static int signalmax;
773 918
774static int sigpipe [2]; 919static EV_ATOMIC_T gotsig;
775static sig_atomic_t volatile gotsig;
776static ev_io sigev;
777 920
778void inline_size 921void inline_size
779signals_init (ANSIG *base, int count) 922signals_init (ANSIG *base, int count)
780{ 923{
781 while (count--) 924 while (count--)
… …
785 928
786 ++base; 929 ++base;
787 } 930 }
788} 931}
789 932
790static void 933/*****************************************************************************/
791sighandler (int signum)
792{
793#if _WIN32
794 signal (signum, sighandler);
795#endif
796
797 signals [signum - 1].gotsig = 1;
798
799 if (!gotsig)
800 {
801 int old_errno = errno;
802 gotsig = 1;
803 write (sigpipe [1], &signum, 1);
804 errno = old_errno;
805 }
806}
807
808void noinline
809ev_feed_signal_event (EV_P_ int signum)
810{
811 WL w;
812
813#if EV_MULTIPLICITY
814 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
815#endif
816
817 --signum;
818
819 if (signum < 0 || signum >= signalmax)
820 return;
821
822 signals [signum].gotsig = 0;
823
824 for (w = signals [signum].head; w; w = w->next)
825 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
826}
827
828static void
829sigcb (EV_P_ ev_io *iow, int revents)
830{
831 int signum;
832
833 read (sigpipe [0], &revents, 1);
834 gotsig = 0;
835
836 for (signum = signalmax; signum--; )
837 if (signals [signum].gotsig)
838 ev_feed_signal_event (EV_A_ signum + 1);
839}
840 934
841void inline_speed 935void inline_speed
842fd_intern (int fd) 936fd_intern (int fd)
843{ 937{
844#ifdef _WIN32 938#ifdef _WIN32
… …
849 fcntl (fd, F_SETFL, O_NONBLOCK); 943 fcntl (fd, F_SETFL, O_NONBLOCK);
850#endif 944#endif
851} 945}
852 946
853static void noinline 947static void noinline
854siginit (EV_P) 948evpipe_init (EV_P)
855{ 949{
950 if (!ev_is_active (&pipeev))
951 {
952#if EV_USE_EVENTFD
953 if ((evfd = eventfd (0, 0)) >= 0)
954 {
955 evpipe [0] = -1;
956 fd_intern (evfd);
957 ev_io_set (&pipeev, evfd, EV_READ);
958 }
959 else
960#endif
961 {
962 while (pipe (evpipe))
963 syserr ("(libev) error creating signal/async pipe");
964
856 fd_intern (sigpipe [0]); 965 fd_intern (evpipe [0]);
857 fd_intern (sigpipe [1]); 966 fd_intern (evpipe [1]);
967 ev_io_set (&pipeev, evpipe [0], EV_READ);
968 }
858 969
859 ev_io_set (&sigev, sigpipe [0], EV_READ);
860 ev_io_start (EV_A_ &sigev); 970 ev_io_start (EV_A_ &pipeev);
861 ev_unref (EV_A); /* child watcher should not keep loop alive */ 971 ev_unref (EV_A); /* watcher should not keep loop alive */
972 }
973}
974
975void inline_size
976evpipe_write (EV_P_ EV_ATOMIC_T *flag)
977{
978 if (!*flag)
979 {
980 int old_errno = errno; /* save errno because write might clobber it */
981
982 *flag = 1;
983
984#if EV_USE_EVENTFD
985 if (evfd >= 0)
986 {
987 uint64_t counter = 1;
988 write (evfd, &counter, sizeof (uint64_t));
989 }
990 else
991#endif
992 write (evpipe [1], &old_errno, 1);
993
994 errno = old_errno;
995 }
996}
997
998static void
999pipecb (EV_P_ ev_io *iow, int revents)
1000{
1001#if EV_USE_EVENTFD
1002 if (evfd >= 0)
1003 {
1004 uint64_t counter;
1005 read (evfd, &counter, sizeof (uint64_t));
1006 }
1007 else
1008#endif
1009 {
1010 char dummy;
1011 read (evpipe [0], &dummy, 1);
1012 }
1013
1014 if (gotsig && ev_is_default_loop (EV_A))
1015 {
1016 int signum;
1017 gotsig = 0;
1018
1019 for (signum = signalmax; signum--; )
1020 if (signals [signum].gotsig)
1021 ev_feed_signal_event (EV_A_ signum + 1);
1022 }
1023
1024#if EV_ASYNC_ENABLE
1025 if (gotasync)
1026 {
1027 int i;
1028 gotasync = 0;
1029
1030 for (i = asynccnt; i--; )
1031 if (asyncs [i]->sent)
1032 {
1033 asyncs [i]->sent = 0;
1034 ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
1035 }
1036 }
1037#endif
862} 1038}
863 1039
864/*****************************************************************************/ 1040/*****************************************************************************/
865 1041
1042static void
1043ev_sighandler (int signum)
1044{
1045#if EV_MULTIPLICITY
1046 struct ev_loop *loop = &default_loop_struct;
1047#endif
1048
1049#if _WIN32
1050 signal (signum, ev_sighandler);
1051#endif
1052
1053 signals [signum - 1].gotsig = 1;
1054 evpipe_write (EV_A_ &gotsig);
1055}
1056
1057void noinline
1058ev_feed_signal_event (EV_P_ int signum)
1059{
1060 WL w;
1061
1062#if EV_MULTIPLICITY
1063 assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1064#endif
1065
1066 --signum;
1067
1068 if (signum < 0 || signum >= signalmax)
1069 return;
1070
1071 signals [signum].gotsig = 0;
1072
1073 for (w = signals [signum].head; w; w = w->next)
1074 ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1075}
1076
1077/*****************************************************************************/
1078
866static WL childs [EV_PID_HASHSIZE]; 1079static WL childs [EV_PID_HASHSIZE];
867 1080
868#ifndef _WIN32 1081#ifndef _WIN32
869 1082
870static ev_signal childev; 1083static ev_signal childev;
871 1084
1085#ifndef WIFCONTINUED
1086# define WIFCONTINUED(status) 0
1087#endif
1088
872void inline_speed 1089void inline_speed
873child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) 1090child_reap (EV_P_ int chain, int pid, int status)
874{ 1091{
875 ev_child *w; 1092 ev_child *w;
1093 int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
876 1094
877 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) 1095 for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1096 {
878 if (w->pid == pid || !w->pid) 1097 if ((w->pid == pid || !w->pid)
1098 && (!traced || (w->flags & 1)))
879 { 1099 {
880 ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ 1100 ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
881 w->rpid = pid; 1101 w->rpid = pid;
882 w->rstatus = status; 1102 w->rstatus = status;
883 ev_feed_event (EV_A_ (W)w, EV_CHILD); 1103 ev_feed_event (EV_A_ (W)w, EV_CHILD);
884 } 1104 }
1105 }
885} 1106}
886 1107
887#ifndef WCONTINUED 1108#ifndef WCONTINUED
888# define WCONTINUED 0 1109# define WCONTINUED 0
889#endif 1110#endif
… …
898 if (!WCONTINUED 1119 if (!WCONTINUED
899 || errno != EINVAL 1120 || errno != EINVAL
900 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) 1121 || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
901 return; 1122 return;
902 1123
903 /* make sure we are called again until all childs have been reaped */ 1124 /* make sure we are called again until all children have been reaped */
904 /* we need to do it this way so that the callback gets called before we continue */ 1125 /* we need to do it this way so that the callback gets called before we continue */
905 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); 1126 ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
906 1127
907 child_reap (EV_A_ sw, pid, pid, status); 1128 child_reap (EV_A_ pid, pid, status);
908 if (EV_PID_HASHSIZE > 1) 1129 if (EV_PID_HASHSIZE > 1)
909 child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ 1130 child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
910} 1131}
911 1132
912#endif 1133#endif
913 1134
914/*****************************************************************************/ 1135/*****************************************************************************/
… …
1032 if (!clock_gettime (CLOCK_MONOTONIC, &ts)) 1253 if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1033 have_monotonic = 1; 1254 have_monotonic = 1;
1034 } 1255 }
1035#endif 1256#endif
1036 1257
1037 ev_rt_now = ev_time (); 1258 ev_rt_now = ev_time ();
1038 mn_now = get_clock (); 1259 mn_now = get_clock ();
1039 now_floor = mn_now; 1260 now_floor = mn_now;
1040 rtmn_diff = ev_rt_now - mn_now; 1261 rtmn_diff = ev_rt_now - mn_now;
1041 1262
1042 io_blocktime = 0.; 1263 io_blocktime = 0.;
1043 timeout_blocktime = 0.; 1264 timeout_blocktime = 0.;
1265 backend = 0;
1266 backend_fd = -1;
1267 gotasync = 0;
1268#if EV_USE_INOTIFY
1269 fs_fd = -2;
1270#endif
1044 1271
1045 /* pid check not overridable via env */ 1272 /* pid check not overridable via env */
1046#ifndef _WIN32 1273#ifndef _WIN32
1047 if (flags & EVFLAG_FORKCHECK) 1274 if (flags & EVFLAG_FORKCHECK)
1048 curpid = getpid (); 1275 curpid = getpid ();
… …
1051 if (!(flags & EVFLAG_NOENV) 1278 if (!(flags & EVFLAG_NOENV)
1052 && !enable_secure () 1279 && !enable_secure ()
1053 && getenv ("LIBEV_FLAGS")) 1280 && getenv ("LIBEV_FLAGS"))
1054 flags = atoi (getenv ("LIBEV_FLAGS")); 1281 flags = atoi (getenv ("LIBEV_FLAGS"));
1055 1282
1056 if (!(flags & 0x0000ffffUL)) 1283 if (!(flags & 0x0000ffffU))
1057 flags |= ev_recommended_backends (); 1284 flags |= ev_recommended_backends ();
1058
1059 backend = 0;
1060 backend_fd = -1;
1061#if EV_USE_INOTIFY
1062 fs_fd = -2;
1063#endif
1064 1285
1065#if EV_USE_PORT 1286#if EV_USE_PORT
1066 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); 1287 if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1067#endif 1288#endif
1068#if EV_USE_KQUEUE 1289#if EV_USE_KQUEUE
… …
1076#endif 1297#endif
1077#if EV_USE_SELECT 1298#if EV_USE_SELECT
1078 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); 1299 if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1079#endif 1300#endif
1080 1301
1081 ev_init (&sigev, sigcb); 1302 ev_init (&pipeev, pipecb);
1082 ev_set_priority (&sigev, EV_MAXPRI); 1303 ev_set_priority (&pipeev, EV_MAXPRI);
1083 } 1304 }
1084} 1305}
1085 1306
1086static void noinline 1307static void noinline
1087loop_destroy (EV_P) 1308loop_destroy (EV_P)
1088{ 1309{
1089 int i; 1310 int i;
1311
1312 if (ev_is_active (&pipeev))
1313 {
1314 ev_ref (EV_A); /* signal watcher */
1315 ev_io_stop (EV_A_ &pipeev);
1316
1317#if EV_USE_EVENTFD
1318 if (evfd >= 0)
1319 close (evfd);
1320#endif
1321
1322 if (evpipe [0] >= 0)
1323 {
1324 close (evpipe [0]);
1325 close (evpipe [1]);
1326 }
1327 }
1090 1328
1091#if EV_USE_INOTIFY 1329#if EV_USE_INOTIFY
1092 if (fs_fd >= 0) 1330 if (fs_fd >= 0)
1093 close (fs_fd); 1331 close (fs_fd);
1094#endif 1332#endif
… …
1131#if EV_FORK_ENABLE 1369#if EV_FORK_ENABLE
1132 array_free (fork, EMPTY); 1370 array_free (fork, EMPTY);
1133#endif 1371#endif
1134 array_free (prepare, EMPTY); 1372 array_free (prepare, EMPTY);
1135 array_free (check, EMPTY); 1373 array_free (check, EMPTY);
1374#if EV_ASYNC_ENABLE
1375 array_free (async, EMPTY);
1376#endif
1136 1377
1137 backend = 0; 1378 backend = 0;
1138} 1379}
1139 1380
1381#if EV_USE_INOTIFY
1140void inline_size infy_fork (EV_P); 1382void inline_size infy_fork (EV_P);
1383#endif
1141 1384
1142void inline_size 1385void inline_size
1143loop_fork (EV_P) 1386loop_fork (EV_P)
1144{ 1387{
1145#if EV_USE_PORT 1388#if EV_USE_PORT
… …
1153#endif 1396#endif
1154#if EV_USE_INOTIFY 1397#if EV_USE_INOTIFY
1155 infy_fork (EV_A); 1398 infy_fork (EV_A);
1156#endif 1399#endif
1157 1400
1158 if (ev_is_active (&sigev)) 1401 if (ev_is_active (&pipeev))
1159 { 1402 {
1160 /* default loop */ 1403 /* this "locks" the handlers against writing to the pipe */
1404 /* while we modify the fd vars */
1405 gotsig = 1;
1406#if EV_ASYNC_ENABLE
1407 gotasync = 1;
1408#endif
1161 1409
1162 ev_ref (EV_A); 1410 ev_ref (EV_A);
1163 ev_io_stop (EV_A_ &sigev); 1411 ev_io_stop (EV_A_ &pipeev);
1412
1413#if EV_USE_EVENTFD
1414 if (evfd >= 0)
1415 close (evfd);
1416#endif
1417
1418 if (evpipe [0] >= 0)
1419 {
1164 close (sigpipe [0]); 1420 close (evpipe [0]);
1165 close (sigpipe [1]); 1421 close (evpipe [1]);
1422 }
1166 1423
1167 while (pipe (sigpipe))
1168 syserr ("(libev) error creating pipe");
1169
1170 siginit (EV_A); 1424 evpipe_init (EV_A);
1425 /* now iterate over everything, in case we missed something */
1171 sigcb (EV_A_ &sigev, EV_READ); 1426 pipecb (EV_A_ &pipeev, EV_READ);
1172 } 1427 }
1173 1428
1174 postfork = 0; 1429 postfork = 0;
1175} 1430}
1176 1431
… …
1198} 1453}
1199 1454
1200void 1455void
1201ev_loop_fork (EV_P) 1456ev_loop_fork (EV_P)
1202{ 1457{
1203 postfork = 1; // must be in line with ev_default_fork 1458 postfork = 1; /* must be in line with ev_default_fork */
1204} 1459}
1205
1206#endif 1460#endif
1207 1461
1208#if EV_MULTIPLICITY 1462#if EV_MULTIPLICITY
1209struct ev_loop * 1463struct ev_loop *
1210ev_default_loop_init (unsigned int flags) 1464ev_default_loop_init (unsigned int flags)
1211#else 1465#else
1212int 1466int
1213ev_default_loop (unsigned int flags) 1467ev_default_loop (unsigned int flags)
1214#endif 1468#endif
1215{ 1469{
1216 if (sigpipe [0] == sigpipe [1])
1217 if (pipe (sigpipe))
1218 return 0;
1219
1220 if (!ev_default_loop_ptr) 1470 if (!ev_default_loop_ptr)
1221 { 1471 {
1222#if EV_MULTIPLICITY 1472#if EV_MULTIPLICITY
1223 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; 1473 struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1224#else 1474#else
… …
1227 1477
1228 loop_init (EV_A_ flags); 1478 loop_init (EV_A_ flags);
1229 1479
1230 if (ev_backend (EV_A)) 1480 if (ev_backend (EV_A))
1231 { 1481 {
1232 siginit (EV_A);
1233
1234#ifndef _WIN32 1482#ifndef _WIN32
1235 ev_signal_init (&childev, childcb, SIGCHLD); 1483 ev_signal_init (&childev, childcb, SIGCHLD);
1236 ev_set_priority (&childev, EV_MAXPRI); 1484 ev_set_priority (&childev, EV_MAXPRI);
1237 ev_signal_start (EV_A_ &childev); 1485 ev_signal_start (EV_A_ &childev);
1238 ev_unref (EV_A); /* child watcher should not keep loop alive */ 1486 ev_unref (EV_A); /* child watcher should not keep loop alive */
… …
1255#ifndef _WIN32 1503#ifndef _WIN32
1256 ev_ref (EV_A); /* child watcher */ 1504 ev_ref (EV_A); /* child watcher */
1257 ev_signal_stop (EV_A_ &childev); 1505 ev_signal_stop (EV_A_ &childev);
1258#endif 1506#endif
1259 1507
1260 ev_ref (EV_A); /* signal watcher */
1261 ev_io_stop (EV_A_ &sigev);
1262
1263 close (sigpipe [0]); sigpipe [0] = 0;
1264 close (sigpipe [1]); sigpipe [1] = 0;
1265
1266 loop_destroy (EV_A); 1508 loop_destroy (EV_A);
1267} 1509}
1268 1510
1269void 1511void
1270ev_default_fork (void) 1512ev_default_fork (void)
… …
1272#if EV_MULTIPLICITY 1514#if EV_MULTIPLICITY
1273 struct ev_loop *loop = ev_default_loop_ptr; 1515 struct ev_loop *loop = ev_default_loop_ptr;
1274#endif 1516#endif
1275 1517
1276 if (backend) 1518 if (backend)
1277 postfork = 1; // must be in line with ev_loop_fork 1519 postfork = 1; /* must be in line with ev_loop_fork */
1278} 1520}
1279 1521
1280/*****************************************************************************/ 1522/*****************************************************************************/
1281 1523
1282void 1524void
… …
1302 p->w->pending = 0; 1544 p->w->pending = 0;
1303 EV_CB_INVOKE (p->w, p->events); 1545 EV_CB_INVOKE (p->w, p->events);
1304 } 1546 }
1305 } 1547 }
1306} 1548}
1307
1308void inline_size
1309timers_reify (EV_P)
1310{
1311 while (timercnt && ((WT)timers [0])->at <= mn_now)
1312 {
1313 ev_timer *w = (ev_timer *)timers [0];
1314
1315 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1316
1317 /* first reschedule or stop timer */
1318 if (w->repeat)
1319 {
1320 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1321
1322 ((WT)w)->at += w->repeat;
1323 if (((WT)w)->at < mn_now)
1324 ((WT)w)->at = mn_now;
1325
1326 downheap (timers, timercnt, 0);
1327 }
1328 else
1329 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1330
1331 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1332 }
1333}
1334
1335#if EV_PERIODIC_ENABLE
1336void inline_size
1337periodics_reify (EV_P)
1338{
1339 while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1340 {
1341 ev_periodic *w = (ev_periodic *)periodics [0];
1342
1343 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1344
1345 /* first reschedule or stop timer */
1346 if (w->reschedule_cb)
1347 {
1348 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1349 assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1350 downheap (periodics, periodiccnt, 0);
1351 }
1352 else if (w->interval)
1353 {
1354 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1355 if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1356 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1357 downheap (periodics, periodiccnt, 0);
1358 }
1359 else
1360 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1361
1362 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1363 }
1364}
1365
1366static void noinline
1367periodics_reschedule (EV_P)
1368{
1369 int i;
1370
1371 /* adjust periodics after time jump */
1372 for (i = 0; i < periodiccnt; ++i)
1373 {
1374 ev_periodic *w = (ev_periodic *)periodics [i];
1375
1376 if (w->reschedule_cb)
1377 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1378 else if (w->interval)
1379 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1380 }
1381
1382 /* now rebuild the heap */
1383 for (i = periodiccnt >> 1; i--; )
1384 downheap (periodics, periodiccnt, i);
1385}
1386#endif
1387 1549
1388#if EV_IDLE_ENABLE 1550#if EV_IDLE_ENABLE
1389void inline_size 1551void inline_size
1390idle_reify (EV_P) 1552idle_reify (EV_P)
1391{ 1553{
… …
1403 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); 1565 queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1404 break; 1566 break;
1405 } 1567 }
1406 } 1568 }
1407 } 1569 }
1570}
1571#endif
1572
1573void inline_size
1574timers_reify (EV_P)
1575{
1576 while (timercnt && ev_at (timers [HEAP0]) <= mn_now)
1577 {
1578 ev_timer *w = (ev_timer *)timers [HEAP0];
1579
1580 /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1581
1582 /* first reschedule or stop timer */
1583 if (w->repeat)
1584 {
1585 assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1586
1587 ev_at (w) += w->repeat;
1588 if (ev_at (w) < mn_now)
1589 ev_at (w) = mn_now;
1590
1591 downheap (timers, timercnt, HEAP0);
1592 }
1593 else
1594 ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1595
1596 ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1597 }
1598}
1599
1600#if EV_PERIODIC_ENABLE
1601void inline_size
1602periodics_reify (EV_P)
1603{
1604 while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now)
1605 {
1606 ev_periodic *w = (ev_periodic *)periodics [HEAP0];
1607
1608 /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1609
1610 /* first reschedule or stop timer */
1611 if (w->reschedule_cb)
1612 {
1613 ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1614 assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
1615 downheap (periodics, periodiccnt, 1);
1616 }
1617 else if (w->interval)
1618 {
1619 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1620 if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1621 assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1622 downheap (periodics, periodiccnt, HEAP0);
1623 }
1624 else
1625 ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1626
1627 ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1628 }
1629}
1630
1631static void noinline
1632periodics_reschedule (EV_P)
1633{
1634 int i;
1635
1636 /* adjust periodics after time jump */
1637 for (i = 1; i <= periodiccnt; ++i)
1638 {
1639 ev_periodic *w = (ev_periodic *)periodics [i];
1640
1641 if (w->reschedule_cb)
1642 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1643 else if (w->interval)
1644 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1645 }
1646
1647 /* now rebuild the heap */
1648 for (i = periodiccnt >> 1; --i; )
1649 downheap (periodics, periodiccnt, i + HEAP0);
1408} 1650}
1409#endif 1651#endif
1410 1652
1411void inline_speed 1653void inline_speed
1412time_update (EV_P_ ev_tstamp max_block) 1654time_update (EV_P_ ev_tstamp max_block)
… …
1441 */ 1683 */
1442 for (i = 4; --i; ) 1684 for (i = 4; --i; )
1443 { 1685 {
1444 rtmn_diff = ev_rt_now - mn_now; 1686 rtmn_diff = ev_rt_now - mn_now;
1445 1687
1446 if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) 1688 if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1447 return; /* all is well */ 1689 return; /* all is well */
1448 1690
1449 ev_rt_now = ev_time (); 1691 ev_rt_now = ev_time ();
1450 mn_now = get_clock (); 1692 mn_now = get_clock ();
1451 now_floor = mn_now; 1693 now_floor = mn_now;
… …
1466 { 1708 {
1467#if EV_PERIODIC_ENABLE 1709#if EV_PERIODIC_ENABLE
1468 periodics_reschedule (EV_A); 1710 periodics_reschedule (EV_A);
1469#endif 1711#endif
1470 /* adjust timers. this is easy, as the offset is the same for all of them */ 1712 /* adjust timers. this is easy, as the offset is the same for all of them */
1471 for (i = 0; i < timercnt; ++i) 1713 for (i = 1; i <= timercnt; ++i)
1472 ((WT)timers [i])->at += ev_rt_now - mn_now; 1714 ev_at (timers [i]) += ev_rt_now - mn_now;
1473 } 1715 }
1474 1716
1475 mn_now = ev_rt_now; 1717 mn_now = ev_rt_now;
1476 } 1718 }
1477} 1719}
… …
1491static int loop_done; 1733static int loop_done;
1492 1734
1493void 1735void
1494ev_loop (EV_P_ int flags) 1736ev_loop (EV_P_ int flags)
1495{ 1737{
1496 loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) 1738 loop_done = EVUNLOOP_CANCEL;
1497 ? EVUNLOOP_ONE
1498 : EVUNLOOP_CANCEL;
1499 1739
1500 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ 1740 call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1501 1741
1502 do 1742 do
1503 { 1743 {
… …
1549 1789
1550 waittime = MAX_BLOCKTIME; 1790 waittime = MAX_BLOCKTIME;
1551 1791
1552 if (timercnt) 1792 if (timercnt)
1553 { 1793 {
1554 ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; 1794 ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge;
1555 if (waittime > to) waittime = to; 1795 if (waittime > to) waittime = to;
1556 } 1796 }
1557 1797
1558#if EV_PERIODIC_ENABLE 1798#if EV_PERIODIC_ENABLE
1559 if (periodiccnt) 1799 if (periodiccnt)
1560 { 1800 {
1561 ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; 1801 ev_tstamp to = ev_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1562 if (waittime > to) waittime = to; 1802 if (waittime > to) waittime = to;
1563 } 1803 }
1564#endif 1804#endif
1565 1805
1566 if (expect_false (waittime < timeout_blocktime)) 1806 if (expect_false (waittime < timeout_blocktime))
… …
1599 /* queue check watchers, to be executed first */ 1839 /* queue check watchers, to be executed first */
1600 if (expect_false (checkcnt)) 1840 if (expect_false (checkcnt))
1601 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); 1841 queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1602 1842
1603 call_pending (EV_A); 1843 call_pending (EV_A);
1604
1605 } 1844 }
1606 while (expect_true (activecnt && !loop_done)); 1845 while (expect_true (
1846 activecnt
1847 && !loop_done
1848 && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1849 ));
1607 1850
1608 if (loop_done == EVUNLOOP_ONE) 1851 if (loop_done == EVUNLOOP_ONE)
1609 loop_done = EVUNLOOP_CANCEL; 1852 loop_done = EVUNLOOP_CANCEL;
1610} 1853}
1611 1854
… …
1729ev_timer_start (EV_P_ ev_timer *w) 1972ev_timer_start (EV_P_ ev_timer *w)
1730{ 1973{
1731 if (expect_false (ev_is_active (w))) 1974 if (expect_false (ev_is_active (w)))
1732 return; 1975 return;
1733 1976
1734 ((WT)w)->at += mn_now; 1977 ev_at (w) += mn_now;
1735 1978
1736 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); 1979 assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1737 1980
1738 ev_start (EV_A_ (W)w, ++timercnt); 1981 ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);
1739 array_needsize (WT, timers, timermax, timercnt, EMPTY2); 1982 array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2);
1740 timers [timercnt - 1] = (WT)w; 1983 timers [ev_active (w)] = (WT)w;
1741 upheap (timers, timercnt - 1); 1984 upheap (timers, ev_active (w));
1742 1985
1743 /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ 1986 /*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/
1744} 1987}
1745 1988
1746void noinline 1989void noinline
1747ev_timer_stop (EV_P_ ev_timer *w) 1990ev_timer_stop (EV_P_ ev_timer *w)
1748{ 1991{
1749 clear_pending (EV_A_ (W)w); 1992 clear_pending (EV_A_ (W)w);
1750 if (expect_false (!ev_is_active (w))) 1993 if (expect_false (!ev_is_active (w)))
1751 return; 1994 return;
1752 1995
1753 assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1754
1755 { 1996 {
1756 int active = ((W)w)->active; 1997 int active = ev_active (w);
1757 1998
1999 assert (("internal timer heap corruption", timers [active] == (WT)w));
2000
1758 if (expect_true (--active < --timercnt)) 2001 if (expect_true (active < timercnt + HEAP0 - 1))
1759 { 2002 {
1760 timers [active] = timers [timercnt]; 2003 timers [active] = timers [timercnt + HEAP0 - 1];
1761 adjustheap (timers, timercnt, active); 2004 adjustheap (timers, timercnt, active);
1762 } 2005 }
2006
2007 --timercnt;
1763 } 2008 }
1764 2009
1765 ((WT)w)->at -= mn_now; 2010 ev_at (w) -= mn_now;
1766 2011
1767 ev_stop (EV_A_ (W)w); 2012 ev_stop (EV_A_ (W)w);
1768} 2013}
1769 2014
1770void noinline 2015void noinline
… …
1772{ 2017{
1773 if (ev_is_active (w)) 2018 if (ev_is_active (w))
1774 { 2019 {
1775 if (w->repeat) 2020 if (w->repeat)
1776 { 2021 {
1777 ((WT)w)->at = mn_now + w->repeat; 2022 ev_at (w) = mn_now + w->repeat;
1778 adjustheap (timers, timercnt, ((W)w)->active - 1); 2023 adjustheap (timers, timercnt, ev_active (w));
1779 } 2024 }
1780 else 2025 else
1781 ev_timer_stop (EV_A_ w); 2026 ev_timer_stop (EV_A_ w);
1782 } 2027 }
1783 else if (w->repeat) 2028 else if (w->repeat)
1784 { 2029 {
1785 w->at = w->repeat; 2030 ev_at (w) = w->repeat;
1786 ev_timer_start (EV_A_ w); 2031 ev_timer_start (EV_A_ w);
1787 } 2032 }
1788} 2033}
1789 2034
1790#if EV_PERIODIC_ENABLE 2035#if EV_PERIODIC_ENABLE
… …
1793{ 2038{
1794 if (expect_false (ev_is_active (w))) 2039 if (expect_false (ev_is_active (w)))
1795 return; 2040 return;
1796 2041
1797 if (w->reschedule_cb) 2042 if (w->reschedule_cb)
1798 ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); 2043 ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1799 else if (w->interval) 2044 else if (w->interval)
1800 { 2045 {
1801 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); 2046 assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1802 /* this formula differs from the one in periodic_reify because we do not always round up */ 2047 /* this formula differs from the one in periodic_reify because we do not always round up */
1803 ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; 2048 ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1804 } 2049 }
1805 else 2050 else
1806 ((WT)w)->at = w->offset; 2051 ev_at (w) = w->offset;
1807 2052
1808 ev_start (EV_A_ (W)w, ++periodiccnt); 2053 ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);
1809 array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); 2054 array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2);
1810 periodics [periodiccnt - 1] = (WT)w; 2055 periodics [ev_active (w)] = (WT)w;
1811 upheap (periodics, periodiccnt - 1); 2056 upheap (periodics, ev_active (w));
1812 2057
1813 /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ 2058 /*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/
1814} 2059}
1815 2060
1816void noinline 2061void noinline
1817ev_periodic_stop (EV_P_ ev_periodic *w) 2062ev_periodic_stop (EV_P_ ev_periodic *w)
1818{ 2063{
1819 clear_pending (EV_A_ (W)w); 2064 clear_pending (EV_A_ (W)w);
1820 if (expect_false (!ev_is_active (w))) 2065 if (expect_false (!ev_is_active (w)))
1821 return; 2066 return;
1822 2067
1823 assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1824
1825 { 2068 {
1826 int active = ((W)w)->active; 2069 int active = ev_active (w);
1827 2070
2071 assert (("internal periodic heap corruption", periodics [active] == (WT)w));
2072
1828 if (expect_true (--active < --periodiccnt)) 2073 if (expect_true (active < periodiccnt + HEAP0 - 1))
1829 { 2074 {
1830 periodics [active] = periodics [periodiccnt]; 2075 periodics [active] = periodics [periodiccnt + HEAP0 - 1];
1831 adjustheap (periodics, periodiccnt, active); 2076 adjustheap (periodics, periodiccnt, active);
1832 } 2077 }
2078
2079 --periodiccnt;
1833 } 2080 }
1834 2081
1835 ev_stop (EV_A_ (W)w); 2082 ev_stop (EV_A_ (W)w);
1836} 2083}
1837 2084
… …
1856#endif 2103#endif
1857 if (expect_false (ev_is_active (w))) 2104 if (expect_false (ev_is_active (w)))
1858 return; 2105 return;
1859 2106
1860 assert (("ev_signal_start called with illegal signal number", w->signum > 0)); 2107 assert (("ev_signal_start called with illegal signal number", w->signum > 0));
2108
2109 evpipe_init (EV_A);
1861 2110
1862 { 2111 {
1863#ifndef _WIN32 2112#ifndef _WIN32
1864 sigset_t full, prev; 2113 sigset_t full, prev;
1865 sigfillset (&full); 2114 sigfillset (&full);
… …
1877 wlist_add (&signals [w->signum - 1].head, (WL)w); 2126 wlist_add (&signals [w->signum - 1].head, (WL)w);
1878 2127
1879 if (!((WL)w)->next) 2128 if (!((WL)w)->next)
1880 { 2129 {
1881#if _WIN32 2130#if _WIN32
1882 signal (w->signum, sighandler); 2131 signal (w->signum, ev_sighandler);
1883#else 2132#else
1884 struct sigaction sa; 2133 struct sigaction sa;
1885 sa.sa_handler = sighandler; 2134 sa.sa_handler = ev_sighandler;
1886 sigfillset (&sa.sa_mask); 2135 sigfillset (&sa.sa_mask);
1887 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ 2136 sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1888 sigaction (w->signum, &sa, 0); 2137 sigaction (w->signum, &sa, 0);
1889#endif 2138#endif
1890 } 2139 }
… …
1951 if (w->wd < 0) 2200 if (w->wd < 0)
1952 { 2201 {
1953 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ 2202 ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1954 2203
1955 /* monitor some parent directory for speedup hints */ 2204 /* monitor some parent directory for speedup hints */
2205 /* note that exceeding the hardcoded limit is not a correctness issue, */
2206 /* but an efficiency issue only */
1956 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) 2207 if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1957 { 2208 {
1958 char path [4096]; 2209 char path [4096];
1959 strcpy (path, w->path); 2210 strcpy (path, w->path);
1960 2211
… …
2205 clear_pending (EV_A_ (W)w); 2456 clear_pending (EV_A_ (W)w);
2206 if (expect_false (!ev_is_active (w))) 2457 if (expect_false (!ev_is_active (w)))
2207 return; 2458 return;
2208 2459
2209 { 2460 {
2210 int active = ((W)w)->active; 2461 int active = ev_active (w);
2211 2462
2212 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; 2463 idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2213 ((W)idles [ABSPRI (w)][active - 1])->active = active; 2464 ev_active (idles [ABSPRI (w)][active - 1]) = active;
2214 2465
2215 ev_stop (EV_A_ (W)w); 2466 ev_stop (EV_A_ (W)w);
2216 --idleall; 2467 --idleall;
2217 } 2468 }
2218} 2469}
… …
2235 clear_pending (EV_A_ (W)w); 2486 clear_pending (EV_A_ (W)w);
2236 if (expect_false (!ev_is_active (w))) 2487 if (expect_false (!ev_is_active (w)))
2237 return; 2488 return;
2238 2489
2239 { 2490 {
2240 int active = ((W)w)->active; 2491 int active = ev_active (w);
2492
2241 prepares [active - 1] = prepares [--preparecnt]; 2493 prepares [active - 1] = prepares [--preparecnt];
2242 ((W)prepares [active - 1])->active = active; 2494 ev_active (prepares [active - 1]) = active;
2243 } 2495 }
2244 2496
2245 ev_stop (EV_A_ (W)w); 2497 ev_stop (EV_A_ (W)w);
2246} 2498}
2247 2499
… …
2262 clear_pending (EV_A_ (W)w); 2514 clear_pending (EV_A_ (W)w);
2263 if (expect_false (!ev_is_active (w))) 2515 if (expect_false (!ev_is_active (w)))
2264 return; 2516 return;
2265 2517
2266 { 2518 {
2267 int active = ((W)w)->active; 2519 int active = ev_active (w);
2520
2268 checks [active - 1] = checks [--checkcnt]; 2521 checks [active - 1] = checks [--checkcnt];
2269 ((W)checks [active - 1])->active = active; 2522 ev_active (checks [active - 1]) = active;
2270 } 2523 }
2271 2524
2272 ev_stop (EV_A_ (W)w); 2525 ev_stop (EV_A_ (W)w);
2273} 2526}
2274 2527
… …
2370 clear_pending (EV_A_ (W)w); 2623 clear_pending (EV_A_ (W)w);
2371 if (expect_false (!ev_is_active (w))) 2624 if (expect_false (!ev_is_active (w)))
2372 return; 2625 return;
2373 2626
2374 { 2627 {
2375 int active = ((W)w)->active; 2628 int active = ev_active (w);
2629
2376 forks [active - 1] = forks [--forkcnt]; 2630 forks [active - 1] = forks [--forkcnt];
2377 ((W)forks [active - 1])->active = active; 2631 ev_active (forks [active - 1]) = active;
2378 } 2632 }
2379 2633
2380 ev_stop (EV_A_ (W)w); 2634 ev_stop (EV_A_ (W)w);
2635}
2636#endif
2637
2638#if EV_ASYNC_ENABLE
2639void
2640ev_async_start (EV_P_ ev_async *w)
2641{
2642 if (expect_false (ev_is_active (w)))
2643 return;
2644
2645 evpipe_init (EV_A);
2646
2647 ev_start (EV_A_ (W)w, ++asynccnt);
2648 array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2649 asyncs [asynccnt - 1] = w;
2650}
2651
2652void
2653ev_async_stop (EV_P_ ev_async *w)
2654{
2655 clear_pending (EV_A_ (W)w);
2656 if (expect_false (!ev_is_active (w)))
2657 return;
2658
2659 {
2660 int active = ev_active (w);
2661
2662 asyncs [active - 1] = asyncs [--asynccnt];
2663 ev_active (asyncs [active - 1]) = active;
2664 }
2665
2666 ev_stop (EV_A_ (W)w);
2667}
2668
2669void
2670ev_async_send (EV_P_ ev_async *w)
2671{
2672 w->sent = 1;
2673 evpipe_write (EV_A_ &gotasync);
2381} 2674}
2382#endif 2675#endif
2383 2676
2384/*****************************************************************************/ 2677/*****************************************************************************/
2385 2678

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