[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.147 by root, Tue Nov 27 10:59:11 2007 UTC vs.
Revision 1.178 by root, Tue Dec 11 18:36:11 2007 UTC

…		…
94	# else	94	# else
95	# define EV_USE_PORT 0	95	# define EV_USE_PORT 0
96	# endif	96	# endif
97	# endif	97	# endif
98		98
		99	# ifndef EV_USE_INOTIFY
		100	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		101	# define EV_USE_INOTIFY 1
		102	# else
		103	# define EV_USE_INOTIFY 0
		104	# endif
		105	# endif
		106
99	#endif	107	#endif
100		108
101	#include <math.h>	109	#include <math.h>
102	#include <stdlib.h>	110	#include <stdlib.h>
103	#include <fcntl.h>	111	#include <fcntl.h>
…		…
109	#include <errno.h>	117	#include <errno.h>
110	#include <sys/types.h>	118	#include <sys/types.h>
111	#include <time.h>	119	#include <time.h>
112		120
113	#include <signal.h>	121	#include <signal.h>
		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
114		128
115	#ifndef _WIN32	129	#ifndef _WIN32
116	# include <sys/time.h>	130	# include <sys/time.h>
117	# include <sys/wait.h>	131	# include <sys/wait.h>
118	# include <unistd.h>	132	# include <unistd.h>
…		…
156		170
157	#ifndef EV_USE_PORT	171	#ifndef EV_USE_PORT
158	# define EV_USE_PORT 0	172	# define EV_USE_PORT 0
159	#endif	173	#endif
160		174
		175	#ifndef EV_USE_INOTIFY
		176	# define EV_USE_INOTIFY 0
		177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
		182	# else
		183	# define EV_PID_HASHSIZE 16
		184	# endif
		185	#endif
		186
		187	#ifndef EV_INOTIFY_HASHSIZE
		188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
		193	#endif
		194
161	/**/	195	/**/
162		196
163	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
164	# undef EV_USE_MONOTONIC	198	# undef EV_USE_MONOTONIC
165	# define EV_USE_MONOTONIC 0	199	# define EV_USE_MONOTONIC 0
…		…
172		206
173	#if EV_SELECT_IS_WINSOCKET	207	#if EV_SELECT_IS_WINSOCKET
174	# include <winsock.h>	208	# include <winsock.h>
175	#endif	209	#endif
176		210
		211	#if !EV_STAT_ENABLE
		212	# define EV_USE_INOTIFY 0
		213	#endif
		214
		215	#if EV_USE_INOTIFY
		216	# include <sys/inotify.h>
		217	#endif
		218
177	/**/	219	/**/
		220
		221	/*
		222	* This is used to avoid floating point rounding problems.
		223	* It is added to ev_rt_now when scheduling periodics
		224	* to ensure progress, time-wise, even when rounding
		225	* errors are against us.
		226	* This value is good at least till the year 4000.
		227	* Better solutions welcome.
		228	*/
		229	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
178		230
179	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	231	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
180	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	232	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
181	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
182	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */	233	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds, TODO */
183
184	#ifdef EV_H
185	# include EV_H
186	#else
187	# include "ev.h"
188	#endif
189		234
190	#if __GNUC__ >= 3	235	#if __GNUC__ >= 3
191	# define expect(expr,value) __builtin_expect ((expr),(value))	236	# define expect(expr,value) __builtin_expect ((expr),(value))
192	# define inline_size static inline /* inline for codesize */
193	# if EV_MINIMAL
194	# define noinline __attribute__ ((noinline))	237	# define noinline __attribute__ ((noinline))
195	# define inline_speed static noinline
196	# else
197	# define noinline
198	# define inline_speed static inline
199	# endif
200	#else	238	#else
201	# define expect(expr,value) (expr)	239	# define expect(expr,value) (expr)
202	# define inline_speed static
203	# define inline_size static
204	# define noinline	240	# define noinline
		241	# if __STDC_VERSION__ < 199901L
		242	# define inline
		243	# endif
205	#endif	244	#endif
206		245
207	#define expect_false(expr) expect ((expr) != 0, 0)	246	#define expect_false(expr) expect ((expr) != 0, 0)
208	#define expect_true(expr) expect ((expr) != 0, 1)	247	#define expect_true(expr) expect ((expr) != 0, 1)
		248	#define inline_size static inline
		249
		250	#if EV_MINIMAL
		251	# define inline_speed static noinline
		252	#else
		253	# define inline_speed static inline
		254	#endif
209		255
210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	256	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	257	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
212		258
213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	259	#define EMPTY /* required for microsofts broken pseudo-c compiler */
214	#define EMPTY2(a,b) /* used to suppress some warnings */	260	#define EMPTY2(a,b) /* used to suppress some warnings */
215		261
216	typedef ev_watcher *W;	262	typedef ev_watcher *W;
217	typedef ev_watcher_list *WL;	263	typedef ev_watcher_list *WL;
218	typedef ev_watcher_time *WT;	264	typedef ev_watcher_time *WT;
…		…
254	ev_set_allocator (void (cb)(void *ptr, long size))	300	ev_set_allocator (void (cb)(void *ptr, long size))
255	{	301	{
256	alloc = cb;	302	alloc = cb;
257	}	303	}
258		304
259	static void *	305	inline_speed void *
260	ev_realloc (void *ptr, long size)	306	ev_realloc (void *ptr, long size)
261	{	307	{
262	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
263		309
264	if (!ptr && size)	310	if (!ptr && size)
…		…
288	typedef struct	334	typedef struct
289	{	335	{
290	W w;	336	W w;
291	int events;	337	int events;
292	} ANPENDING;	338	} ANPENDING;
		339
		340	#if EV_USE_INOTIFY
		341	typedef struct
		342	{
		343	WL head;
		344	} ANFS;
		345	#endif
293		346
294	#if EV_MULTIPLICITY	347	#if EV_MULTIPLICITY
295		348
296	struct ev_loop	349	struct ev_loop
297	{	350	{
…		…
354	{	407	{
355	return ev_rt_now;	408	return ev_rt_now;
356	}	409	}
357	#endif	410	#endif
358		411
359	#define array_roundsize(type,n) (((n) \| 4) & ~3)	412	int inline_size
		413	array_nextsize (int elem, int cur, int cnt)
		414	{
		415	int ncur = cur + 1;
		416
		417	do
		418	ncur <<= 1;
		419	while (cnt > ncur);
		420
		421	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		422	if (elem * ncur > 4096)
		423	{
		424	ncur *= elem;
		425	ncur = (ncur + elem + 4095 + sizeof (void ) 4) & ~4095;
		426	ncur = ncur - sizeof (void ) 4;
		427	ncur /= elem;
		428	}
		429
		430	return ncur;
		431	}
		432
		433	static noinline void *
		434	array_realloc (int elem, void base, int cur, int cnt)
		435	{
		436	cur = array_nextsize (elem, cur, cnt);
		437	return ev_realloc (base, elem * *cur);
		438	}
360		439
361	#define array_needsize(type,base,cur,cnt,init) \	440	#define array_needsize(type,base,cur,cnt,init) \
362	if (expect_false ((cnt) > cur)) \	441	if (expect_false ((cnt) > (cur))) \
363	{ \	442	{ \
364	int newcnt = cur; \	443	int ocur_ = (cur); \
365	do \	444	(base) = (type *)array_realloc \
366	{ \	445	(sizeof (type), (base), &(cur), (cnt)); \
367	newcnt = array_roundsize (type, newcnt << 1); \	446	init ((base) + (ocur_), (cur) - ocur_); \
368	} \
369	while ((cnt) > newcnt); \
370	\
371	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
372	init (base + cur, newcnt - cur); \
373	cur = newcnt; \
374	}	447	}
375		448
		449	#if 0
376	#define array_slim(type,stem) \	450	#define array_slim(type,stem) \
377	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	451	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
378	{ \	452	{ \
379	stem ## max = array_roundsize (stem ## cnt >> 1); \	453	stem ## max = array_roundsize (stem ## cnt >> 1); \
380	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\	454	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
381	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	455	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
382	}	456	}
		457	#endif
383		458
384	#define array_free(stem, idx) \	459	#define array_free(stem, idx) \
385	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	460	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
386		461
387	/*****************************************************************************/	462	/*****************************************************************************/
388		463
389	void noinline	464	void noinline
390	ev_feed_event (EV_P_ void *w, int revents)	465	ev_feed_event (EV_P_ void *w, int revents)
391	{	466	{
392	W w_ = (W)w;	467	W w_ = (W)w;
		468	int pri = ABSPRI (w_);
393		469
394	if (expect_false (w_->pending))	470	if (expect_false (w_->pending))
		471	pendings [pri][w_->pending - 1].events \|= revents;
		472	else
395	{	473	{
		474	w_->pending = ++pendingcnt [pri];
		475	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		476	pendings [pri][w_->pending - 1].w = w_;
396	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;	477	pendings [pri][w_->pending - 1].events = revents;
397	return;
398	}	478	}
399
400	w_->pending = ++pendingcnt [ABSPRI (w_)];
401	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
402	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
403	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
404	}	479	}
405		480
406	void inline_size	481	void inline_size
407	queue_events (EV_P_ W *events, int eventcnt, int type)	482	queue_events (EV_P_ W *events, int eventcnt, int type)
408	{	483	{
…		…
443	}	518	}
444		519
445	void	520	void
446	ev_feed_fd_event (EV_P_ int fd, int revents)	521	ev_feed_fd_event (EV_P_ int fd, int revents)
447	{	522	{
		523	if (fd >= 0 && fd < anfdmax)
448	fd_event (EV_A_ fd, revents);	524	fd_event (EV_A_ fd, revents);
449	}	525	}
450		526
451	void inline_size	527	void inline_size
452	fd_reify (EV_P)	528	fd_reify (EV_P)
453	{	529	{
…		…
547	static void noinline	623	static void noinline
548	fd_rearm_all (EV_P)	624	fd_rearm_all (EV_P)
549	{	625	{
550	int fd;	626	int fd;
551		627
552	/* this should be highly optimised to not do anything but set a flag */
553	for (fd = 0; fd < anfdmax; ++fd)	628	for (fd = 0; fd < anfdmax; ++fd)
554	if (anfds [fd].events)	629	if (anfds [fd].events)
555	{	630	{
556	anfds [fd].events = 0;	631	anfds [fd].events = 0;
557	fd_change (EV_A_ fd);	632	fd_change (EV_A_ fd);
…		…
684	for (signum = signalmax; signum--; )	759	for (signum = signalmax; signum--; )
685	if (signals [signum].gotsig)	760	if (signals [signum].gotsig)
686	ev_feed_signal_event (EV_A_ signum + 1);	761	ev_feed_signal_event (EV_A_ signum + 1);
687	}	762	}
688		763
689	void inline_size	764	void inline_speed
690	fd_intern (int fd)	765	fd_intern (int fd)
691	{	766	{
692	#ifdef _WIN32	767	#ifdef _WIN32
693	int arg = 1;	768	int arg = 1;
694	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	769	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
709	ev_unref (EV_A); /* child watcher should not keep loop alive */	784	ev_unref (EV_A); /* child watcher should not keep loop alive */
710	}	785	}
711		786
712	/*****************************************************************************/	787	/*****************************************************************************/
713		788
714	static ev_child *childs [PID_HASHSIZE];	789	static ev_child *childs [EV_PID_HASHSIZE];
715		790
716	#ifndef _WIN32	791	#ifndef _WIN32
717		792
718	static ev_signal childev;	793	static ev_signal childev;
719		794
720	void inline_speed	795	void inline_speed
721	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	796	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
722	{	797	{
723	ev_child *w;	798	ev_child *w;
724		799
725	for (w = (ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	800	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
726	if (w->pid == pid \|\| !w->pid)	801	if (w->pid == pid \|\| !w->pid)
727	{	802	{
728	ev_priority (w) = ev_priority (sw); /* need to do it now */	803	ev_set_priority (w, ev_priority (sw)); /* need to do it now */
729	w->rpid = pid;	804	w->rpid = pid;
730	w->rstatus = status;	805	w->rstatus = status;
731	ev_feed_event (EV_A_ (W)w, EV_CHILD);	806	ev_feed_event (EV_A_ (W)w, EV_CHILD);
732	}	807	}
733	}	808	}
734		809
735	#ifndef WCONTINUED	810	#ifndef WCONTINUED
…		…
751	/* make sure we are called again until all childs have been reaped */	826	/* make sure we are called again until all childs have been reaped */
752	/* we need to do it this way so that the callback gets called before we continue */	827	/* we need to do it this way so that the callback gets called before we continue */
753	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	828	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
754		829
755	child_reap (EV_A_ sw, pid, pid, status);	830	child_reap (EV_A_ sw, pid, pid, status);
		831	if (EV_PID_HASHSIZE > 1)
756	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	832	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
757	}	833	}
758		834
759	#endif	835	#endif
760		836
761	/*****************************************************************************/	837	/*****************************************************************************/
…		…
844	ev_backend (EV_P)	920	ev_backend (EV_P)
845	{	921	{
846	return backend;	922	return backend;
847	}	923	}
848		924
849	static void	925	unsigned int
		926	ev_loop_count (EV_P)
		927	{
		928	return loop_count;
		929	}
		930
		931	static void noinline
850	loop_init (EV_P_ unsigned int flags)	932	loop_init (EV_P_ unsigned int flags)
851	{	933	{
852	if (!backend)	934	if (!backend)
853	{	935	{
854	#if EV_USE_MONOTONIC	936	#if EV_USE_MONOTONIC
…		…
862	ev_rt_now = ev_time ();	944	ev_rt_now = ev_time ();
863	mn_now = get_clock ();	945	mn_now = get_clock ();
864	now_floor = mn_now;	946	now_floor = mn_now;
865	rtmn_diff = ev_rt_now - mn_now;	947	rtmn_diff = ev_rt_now - mn_now;
866		948
		949	/* pid check not overridable via env */
		950	#ifndef _WIN32
		951	if (flags & EVFLAG_FORKCHECK)
		952	curpid = getpid ();
		953	#endif
		954
867	if (!(flags & EVFLAG_NOENV)	955	if (!(flags & EVFLAG_NOENV)
868	&& !enable_secure ()	956	&& !enable_secure ()
869	&& getenv ("LIBEV_FLAGS"))	957	&& getenv ("LIBEV_FLAGS"))
870	flags = atoi (getenv ("LIBEV_FLAGS"));	958	flags = atoi (getenv ("LIBEV_FLAGS"));
871		959
872	if (!(flags & 0x0000ffffUL))	960	if (!(flags & 0x0000ffffUL))
873	flags \|= ev_recommended_backends ();	961	flags \|= ev_recommended_backends ();
874		962
875	backend = 0;	963	backend = 0;
		964	backend_fd = -1;
		965	#if EV_USE_INOTIFY
		966	fs_fd = -2;
		967	#endif
		968
876	#if EV_USE_PORT	969	#if EV_USE_PORT
877	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	970	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
878	#endif	971	#endif
879	#if EV_USE_KQUEUE	972	#if EV_USE_KQUEUE
880	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	973	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
892	ev_init (&sigev, sigcb);	985	ev_init (&sigev, sigcb);
893	ev_set_priority (&sigev, EV_MAXPRI);	986	ev_set_priority (&sigev, EV_MAXPRI);
894	}	987	}
895	}	988	}
896		989
897	static void	990	static void noinline
898	loop_destroy (EV_P)	991	loop_destroy (EV_P)
899	{	992	{
900	int i;	993	int i;
		994
		995	#if EV_USE_INOTIFY
		996	if (fs_fd >= 0)
		997	close (fs_fd);
		998	#endif
		999
		1000	if (backend_fd >= 0)
		1001	close (backend_fd);
901		1002
902	#if EV_USE_PORT	1003	#if EV_USE_PORT
903	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1004	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
904	#endif	1005	#endif
905	#if EV_USE_KQUEUE	1006	#if EV_USE_KQUEUE
…		…
914	#if EV_USE_SELECT	1015	#if EV_USE_SELECT
915	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1016	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
916	#endif	1017	#endif
917		1018
918	for (i = NUMPRI; i--; )	1019	for (i = NUMPRI; i--; )
		1020	{
919	array_free (pending, [i]);	1021	array_free (pending, [i]);
		1022	#if EV_IDLE_ENABLE
		1023	array_free (idle, [i]);
		1024	#endif
		1025	}
920		1026
921	/* have to use the microsoft-never-gets-it-right macro */	1027	/* have to use the microsoft-never-gets-it-right macro */
922	array_free (fdchange, EMPTY0);	1028	array_free (fdchange, EMPTY);
923	array_free (timer, EMPTY0);	1029	array_free (timer, EMPTY);
924	#if EV_PERIODIC_ENABLE	1030	#if EV_PERIODIC_ENABLE
925	array_free (periodic, EMPTY0);	1031	array_free (periodic, EMPTY);
926	#endif	1032	#endif
927	array_free (idle, EMPTY0);
928	array_free (prepare, EMPTY0);	1033	array_free (prepare, EMPTY);
929	array_free (check, EMPTY0);	1034	array_free (check, EMPTY);
930		1035
931	backend = 0;	1036	backend = 0;
932	}	1037	}
933		1038
934	static void	1039	void inline_size infy_fork (EV_P);
		1040
		1041	void inline_size
935	loop_fork (EV_P)	1042	loop_fork (EV_P)
936	{	1043	{
937	#if EV_USE_PORT	1044	#if EV_USE_PORT
938	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1045	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
939	#endif	1046	#endif
940	#if EV_USE_KQUEUE	1047	#if EV_USE_KQUEUE
941	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1048	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
942	#endif	1049	#endif
943	#if EV_USE_EPOLL	1050	#if EV_USE_EPOLL
944	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1051	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1052	#endif
		1053	#if EV_USE_INOTIFY
		1054	infy_fork (EV_A);
945	#endif	1055	#endif
946		1056
947	if (ev_is_active (&sigev))	1057	if (ev_is_active (&sigev))
948	{	1058	{
949	/* default loop */	1059	/* default loop */
…		…
1065	postfork = 1;	1175	postfork = 1;
1066	}	1176	}
1067		1177
1068	/*****************************************************************************/	1178	/*****************************************************************************/
1069		1179
1070	int inline_size	1180	void
1071	any_pending (EV_P)	1181	ev_invoke (EV_P_ void *w, int revents)
1072	{	1182	{
1073	int pri;	1183	EV_CB_INVOKE ((W)w, revents);
1074
1075	for (pri = NUMPRI; pri--; )
1076	if (pendingcnt [pri])
1077	return 1;
1078
1079	return 0;
1080	}	1184	}
1081		1185
1082	void inline_speed	1186	void inline_speed
1083	call_pending (EV_P)	1187	call_pending (EV_P)
1084	{	1188	{
…		…
1089	{	1193	{
1090	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1194	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1091		1195
1092	if (expect_true (p->w))	1196	if (expect_true (p->w))
1093	{	1197	{
1094	assert (("non-pending watcher on pending list", p->w->pending));	1198	/assert (("non-pending watcher on pending list", p->w->pending));/
1095		1199
1096	p->w->pending = 0;	1200	p->w->pending = 0;
1097	EV_CB_INVOKE (p->w, p->events);	1201	EV_CB_INVOKE (p->w, p->events);
1098	}	1202	}
1099	}	1203	}
…		…
1104	{	1208	{
1105	while (timercnt && ((WT)timers [0])->at <= mn_now)	1209	while (timercnt && ((WT)timers [0])->at <= mn_now)
1106	{	1210	{
1107	ev_timer *w = timers [0];	1211	ev_timer *w = timers [0];
1108		1212
1109	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1213	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1110		1214
1111	/* first reschedule or stop timer */	1215	/* first reschedule or stop timer */
1112	if (w->repeat)	1216	if (w->repeat)
1113	{	1217	{
1114	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1218	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
…		…
1132	{	1236	{
1133	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1237	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1134	{	1238	{
1135	ev_periodic *w = periodics [0];	1239	ev_periodic *w = periodics [0];
1136		1240
1137	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1241	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1138		1242
1139	/* first reschedule or stop timer */	1243	/* first reschedule or stop timer */
1140	if (w->reschedule_cb)	1244	if (w->reschedule_cb)
1141	{	1245	{
1142	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1246	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1143	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1247	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1144	downheap ((WT *)periodics, periodiccnt, 0);	1248	downheap ((WT *)periodics, periodiccnt, 0);
1145	}	1249	}
1146	else if (w->interval)	1250	else if (w->interval)
1147	{	1251	{
1148	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1252	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1253	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1149	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1254	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1150	downheap ((WT *)periodics, periodiccnt, 0);	1255	downheap ((WT *)periodics, periodiccnt, 0);
1151	}	1256	}
1152	else	1257	else
1153	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1258	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
…		…
1167	ev_periodic *w = periodics [i];	1272	ev_periodic *w = periodics [i];
1168		1273
1169	if (w->reschedule_cb)	1274	if (w->reschedule_cb)
1170	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1275	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1171	else if (w->interval)	1276	else if (w->interval)
1172	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1277	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1173	}	1278	}
1174		1279
1175	/* now rebuild the heap */	1280	/* now rebuild the heap */
1176	for (i = periodiccnt >> 1; i--; )	1281	for (i = periodiccnt >> 1; i--; )
1177	downheap ((WT *)periodics, periodiccnt, i);	1282	downheap ((WT *)periodics, periodiccnt, i);
1178	}	1283	}
1179	#endif	1284	#endif
1180		1285
		1286	#if EV_IDLE_ENABLE
1181	int inline_size	1287	void inline_size
1182	time_update_monotonic (EV_P)	1288	idle_reify (EV_P)
1183	{	1289	{
		1290	if (expect_false (idleall))
		1291	{
		1292	int pri;
		1293
		1294	for (pri = NUMPRI; pri--; )
		1295	{
		1296	if (pendingcnt [pri])
		1297	break;
		1298
		1299	if (idlecnt [pri])
		1300	{
		1301	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1302	break;
		1303	}
		1304	}
		1305	}
		1306	}
		1307	#endif
		1308
		1309	void inline_speed
		1310	time_update (EV_P_ ev_tstamp max_block)
		1311	{
		1312	int i;
		1313
		1314	#if EV_USE_MONOTONIC
		1315	if (expect_true (have_monotonic))
		1316	{
		1317	ev_tstamp odiff = rtmn_diff;
		1318
1184	mn_now = get_clock ();	1319	mn_now = get_clock ();
1185		1320
		1321	/* only fetch the realtime clock every 0.5MIN_TIMEJUMP seconds /
		1322	/* interpolate in the meantime */
1186	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1323	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1187	{	1324	{
1188	ev_rt_now = rtmn_diff + mn_now;	1325	ev_rt_now = rtmn_diff + mn_now;
1189	return 0;	1326	return;
1190	}	1327	}
1191	else	1328
1192	{
1193	now_floor = mn_now;	1329	now_floor = mn_now;
1194	ev_rt_now = ev_time ();	1330	ev_rt_now = ev_time ();
1195	return 1;
1196	}
1197	}
1198		1331
1199	void inline_size	1332	/* loop a few times, before making important decisions.
1200	time_update (EV_P)	1333	* on the choice of "4": one iteration isn't enough,
1201	{	1334	* in case we get preempted during the calls to
1202	int i;	1335	* ev_time and get_clock. a second call is almost guaranteed
1203		1336	* to succeed in that case, though. and looping a few more times
1204	#if EV_USE_MONOTONIC	1337	* doesn't hurt either as we only do this on time-jumps or
1205	if (expect_true (have_monotonic))	1338	* in the unlikely event of having been preempted here.
1206	{	1339	*/
1207	if (time_update_monotonic (EV_A))	1340	for (i = 4; --i; )
1208	{	1341	{
1209	ev_tstamp odiff = rtmn_diff;
1210
1211	/* loop a few times, before making important decisions.
1212	* on the choice of "4": one iteration isn't enough,
1213	* in case we get preempted during the calls to
1214	* ev_time and get_clock. a second call is almost guarenteed
1215	* to succeed in that case, though. and looping a few more times
1216	* doesn't hurt either as we only do this on time-jumps or
1217	* in the unlikely event of getting preempted here.
1218	*/
1219	for (i = 4; --i; )
1220	{
1221	rtmn_diff = ev_rt_now - mn_now;	1342	rtmn_diff = ev_rt_now - mn_now;
1222		1343
1223	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1344	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1224	return; /* all is well */	1345	return; /* all is well */
1225		1346
1226	ev_rt_now = ev_time ();	1347	ev_rt_now = ev_time ();
1227	mn_now = get_clock ();	1348	mn_now = get_clock ();
1228	now_floor = mn_now;	1349	now_floor = mn_now;
1229	}	1350	}
1230		1351
1231	# if EV_PERIODIC_ENABLE	1352	# if EV_PERIODIC_ENABLE
1232	periodics_reschedule (EV_A);	1353	periodics_reschedule (EV_A);
1233	# endif	1354	# endif
1234	/* no timer adjustment, as the monotonic clock doesn't jump */	1355	/* no timer adjustment, as the monotonic clock doesn't jump */
1235	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1356	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1236	}
1237	}	1357	}
1238	else	1358	else
1239	#endif	1359	#endif
1240	{	1360	{
1241	ev_rt_now = ev_time ();	1361	ev_rt_now = ev_time ();
1242		1362
1243	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1363	if (expect_false (mn_now > ev_rt_now \|\| ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1244	{	1364	{
1245	#if EV_PERIODIC_ENABLE	1365	#if EV_PERIODIC_ENABLE
1246	periodics_reschedule (EV_A);	1366	periodics_reschedule (EV_A);
1247	#endif	1367	#endif
1248
1249	/* adjust timers. this is easy, as the offset is the same for all */	1368	/* adjust timers. this is easy, as the offset is the same for all of them */
1250	for (i = 0; i < timercnt; ++i)	1369	for (i = 0; i < timercnt; ++i)
1251	((WT)timers [i])->at += ev_rt_now - mn_now;	1370	((WT)timers [i])->at += ev_rt_now - mn_now;
1252	}	1371	}
1253		1372
1254	mn_now = ev_rt_now;	1373	mn_now = ev_rt_now;
…		…
1274	{	1393	{
1275	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)	1394	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
1276	? EVUNLOOP_ONE	1395	? EVUNLOOP_ONE
1277	: EVUNLOOP_CANCEL;	1396	: EVUNLOOP_CANCEL;
1278		1397
1279	while (activecnt)	1398	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1399
		1400	do
1280	{	1401	{
1281	/* we might have forked, so reify kernel state if necessary */	1402	#ifndef _WIN32
		1403	if (expect_false (curpid)) /* penalise the forking check even more */
		1404	if (expect_false (getpid () != curpid))
		1405	{
		1406	curpid = getpid ();
		1407	postfork = 1;
		1408	}
		1409	#endif
		1410
		1411	#if EV_FORK_ENABLE
		1412	/* we might have forked, so queue fork handlers */
1282	if (expect_false (postfork))	1413	if (expect_false (postfork))
1283	if (forkcnt)	1414	if (forkcnt)
1284	{	1415	{
1285	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	1416	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1286	call_pending (EV_A);	1417	call_pending (EV_A);
1287	}	1418	}
		1419	#endif
1288		1420
1289	/* queue check watchers (and execute them) */	1421	/* queue prepare watchers (and execute them) */
1290	if (expect_false (preparecnt))	1422	if (expect_false (preparecnt))
1291	{	1423	{
1292	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1424	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1293	call_pending (EV_A);	1425	call_pending (EV_A);
1294	}	1426	}
1295		1427
		1428	if (expect_false (!activecnt))
		1429	break;
		1430
1296	/* we might have forked, so reify kernel state if necessary */	1431	/* we might have forked, so reify kernel state if necessary */
1297	if (expect_false (postfork))	1432	if (expect_false (postfork))
1298	loop_fork (EV_A);	1433	loop_fork (EV_A);
1299		1434
1300	/* update fd-related kernel structures */	1435	/* update fd-related kernel structures */
1301	fd_reify (EV_A);	1436	fd_reify (EV_A);
1302		1437
1303	/* calculate blocking time */	1438	/* calculate blocking time */
1304	{	1439	{
1305	double block;	1440	ev_tstamp block;
1306		1441
1307	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1442	if (expect_false (flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt))
1308	block = 0.; /* do not block at all */	1443	block = 0.; /* do not block at all */
1309	else	1444	else
1310	{	1445	{
1311	/* update time to cancel out callback processing overhead */	1446	/* update time to cancel out callback processing overhead */
1312	#if EV_USE_MONOTONIC
1313	if (expect_true (have_monotonic))
1314	time_update_monotonic (EV_A);	1447	time_update (EV_A_ 1e100);
1315	else
1316	#endif
1317	{
1318	ev_rt_now = ev_time ();
1319	mn_now = ev_rt_now;
1320	}
1321		1448
1322	block = MAX_BLOCKTIME;	1449	block = MAX_BLOCKTIME;
1323		1450
1324	if (timercnt)	1451	if (timercnt)
1325	{	1452	{
…		…
1336	#endif	1463	#endif
1337		1464
1338	if (expect_false (block < 0.)) block = 0.;	1465	if (expect_false (block < 0.)) block = 0.;
1339	}	1466	}
1340		1467
		1468	++loop_count;
1341	backend_poll (EV_A_ block);	1469	backend_poll (EV_A_ block);
		1470
		1471	/* update ev_rt_now, do magic */
		1472	time_update (EV_A_ block);
1342	}	1473	}
1343
1344	/* update ev_rt_now, do magic */
1345	time_update (EV_A);
1346		1474
1347	/* queue pending timers and reschedule them */	1475	/* queue pending timers and reschedule them */
1348	timers_reify (EV_A); /* relative timers called last */	1476	timers_reify (EV_A); /* relative timers called last */
1349	#if EV_PERIODIC_ENABLE	1477	#if EV_PERIODIC_ENABLE
1350	periodics_reify (EV_A); /* absolute timers called first */	1478	periodics_reify (EV_A); /* absolute timers called first */
1351	#endif	1479	#endif
1352		1480
		1481	#if EV_IDLE_ENABLE
1353	/* queue idle watchers unless other events are pending */	1482	/* queue idle watchers unless other events are pending */
1354	if (idlecnt && !any_pending (EV_A))	1483	idle_reify (EV_A);
1355	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1484	#endif
1356		1485
1357	/* queue check watchers, to be executed first */	1486	/* queue check watchers, to be executed first */
1358	if (expect_false (checkcnt))	1487	if (expect_false (checkcnt))
1359	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1488	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1360		1489
1361	call_pending (EV_A);	1490	call_pending (EV_A);
1362		1491
1363	if (expect_false (loop_done))
1364	break;
1365	}	1492	}
		1493	while (expect_true (activecnt && !loop_done));
1366		1494
1367	if (loop_done == EVUNLOOP_ONE)	1495	if (loop_done == EVUNLOOP_ONE)
1368	loop_done = EVUNLOOP_CANCEL;	1496	loop_done = EVUNLOOP_CANCEL;
1369	}	1497	}
1370		1498
…		…
1397	head = &(*head)->next;	1525	head = &(*head)->next;
1398	}	1526	}
1399	}	1527	}
1400		1528
1401	void inline_speed	1529	void inline_speed
1402	ev_clear_pending (EV_P_ W w)	1530	clear_pending (EV_P_ W w)
1403	{	1531	{
1404	if (w->pending)	1532	if (w->pending)
1405	{	1533	{
1406	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1534	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1407	w->pending = 0;	1535	w->pending = 0;
1408	}	1536	}
1409	}	1537	}
1410		1538
		1539	int
		1540	ev_clear_pending (EV_P_ void *w)
		1541	{
		1542	W w_ = (W)w;
		1543	int pending = w_->pending;
		1544
		1545	if (expect_true (pending))
		1546	{
		1547	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1548	w_->pending = 0;
		1549	p->w = 0;
		1550	return p->events;
		1551	}
		1552	else
		1553	return 0;
		1554	}
		1555
		1556	void inline_size
		1557	pri_adjust (EV_P_ W w)
		1558	{
		1559	int pri = w->priority;
		1560	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1561	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1562	w->priority = pri;
		1563	}
		1564
1411	void inline_speed	1565	void inline_speed
1412	ev_start (EV_P_ W w, int active)	1566	ev_start (EV_P_ W w, int active)
1413	{	1567	{
1414	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1568	pri_adjust (EV_A_ w);
1415	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1416
1417	w->active = active;	1569	w->active = active;
1418	ev_ref (EV_A);	1570	ev_ref (EV_A);
1419	}	1571	}
1420		1572
1421	void inline_size	1573	void inline_size
…		…
1425	w->active = 0;	1577	w->active = 0;
1426	}	1578	}
1427		1579
1428	/*****************************************************************************/	1580	/*****************************************************************************/
1429		1581
1430	void	1582	void noinline
1431	ev_io_start (EV_P_ ev_io *w)	1583	ev_io_start (EV_P_ ev_io *w)
1432	{	1584	{
1433	int fd = w->fd;	1585	int fd = w->fd;
1434		1586
1435	if (expect_false (ev_is_active (w)))	1587	if (expect_false (ev_is_active (w)))
…		…
1442	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1594	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1443		1595
1444	fd_change (EV_A_ fd);	1596	fd_change (EV_A_ fd);
1445	}	1597	}
1446		1598
1447	void	1599	void noinline
1448	ev_io_stop (EV_P_ ev_io *w)	1600	ev_io_stop (EV_P_ ev_io *w)
1449	{	1601	{
1450	ev_clear_pending (EV_A_ (W)w);	1602	clear_pending (EV_A_ (W)w);
1451	if (expect_false (!ev_is_active (w)))	1603	if (expect_false (!ev_is_active (w)))
1452	return;	1604	return;
1453		1605
1454	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1606	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1455		1607
…		…
1457	ev_stop (EV_A_ (W)w);	1609	ev_stop (EV_A_ (W)w);
1458		1610
1459	fd_change (EV_A_ w->fd);	1611	fd_change (EV_A_ w->fd);
1460	}	1612	}
1461		1613
1462	void	1614	void noinline
1463	ev_timer_start (EV_P_ ev_timer *w)	1615	ev_timer_start (EV_P_ ev_timer *w)
1464	{	1616	{
1465	if (expect_false (ev_is_active (w)))	1617	if (expect_false (ev_is_active (w)))
1466	return;	1618	return;
1467		1619
…		…
1472	ev_start (EV_A_ (W)w, ++timercnt);	1624	ev_start (EV_A_ (W)w, ++timercnt);
1473	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1625	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1474	timers [timercnt - 1] = w;	1626	timers [timercnt - 1] = w;
1475	upheap ((WT *)timers, timercnt - 1);	1627	upheap ((WT *)timers, timercnt - 1);
1476		1628
		1629	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
		1630	}
		1631
		1632	void noinline
		1633	ev_timer_stop (EV_P_ ev_timer *w)
		1634	{
		1635	clear_pending (EV_A_ (W)w);
		1636	if (expect_false (!ev_is_active (w)))
		1637	return;
		1638
1477	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1639	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1478	}
1479		1640
1480	void	1641	{
1481	ev_timer_stop (EV_P_ ev_timer *w)	1642	int active = ((W)w)->active;
1482	{
1483	ev_clear_pending (EV_A_ (W)w);
1484	if (expect_false (!ev_is_active (w)))
1485	return;
1486		1643
1487	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1488
1489	if (expect_true (((W)w)->active < timercnt--))	1644	if (expect_true (--active < --timercnt))
1490	{	1645	{
1491	timers [((W)w)->active - 1] = timers [timercnt];	1646	timers [active] = timers [timercnt];
1492	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1647	adjustheap ((WT *)timers, timercnt, active);
1493	}	1648	}
		1649	}
1494		1650
1495	((WT)w)->at -= mn_now;	1651	((WT)w)->at -= mn_now;
1496		1652
1497	ev_stop (EV_A_ (W)w);	1653	ev_stop (EV_A_ (W)w);
1498	}	1654	}
1499		1655
1500	void	1656	void noinline
1501	ev_timer_again (EV_P_ ev_timer *w)	1657	ev_timer_again (EV_P_ ev_timer *w)
1502	{	1658	{
1503	if (ev_is_active (w))	1659	if (ev_is_active (w))
1504	{	1660	{
1505	if (w->repeat)	1661	if (w->repeat)
…		…
1516	ev_timer_start (EV_A_ w);	1672	ev_timer_start (EV_A_ w);
1517	}	1673	}
1518	}	1674	}
1519		1675
1520	#if EV_PERIODIC_ENABLE	1676	#if EV_PERIODIC_ENABLE
1521	void	1677	void noinline
1522	ev_periodic_start (EV_P_ ev_periodic *w)	1678	ev_periodic_start (EV_P_ ev_periodic *w)
1523	{	1679	{
1524	if (expect_false (ev_is_active (w)))	1680	if (expect_false (ev_is_active (w)))
1525	return;	1681	return;
1526		1682
…		…
1528	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1684	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1529	else if (w->interval)	1685	else if (w->interval)
1530	{	1686	{
1531	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1687	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1532	/* this formula differs from the one in periodic_reify because we do not always round up */	1688	/* this formula differs from the one in periodic_reify because we do not always round up */
1533	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1689	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1534	}	1690	}
		1691	else
		1692	((WT)w)->at = w->offset;
1535		1693
1536	ev_start (EV_A_ (W)w, ++periodiccnt);	1694	ev_start (EV_A_ (W)w, ++periodiccnt);
1537	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1695	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1538	periodics [periodiccnt - 1] = w;	1696	periodics [periodiccnt - 1] = w;
1539	upheap ((WT *)periodics, periodiccnt - 1);	1697	upheap ((WT *)periodics, periodiccnt - 1);
1540		1698
		1699	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
		1700	}
		1701
		1702	void noinline
		1703	ev_periodic_stop (EV_P_ ev_periodic *w)
		1704	{
		1705	clear_pending (EV_A_ (W)w);
		1706	if (expect_false (!ev_is_active (w)))
		1707	return;
		1708
1541	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1709	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1542	}
1543		1710
1544	void	1711	{
1545	ev_periodic_stop (EV_P_ ev_periodic *w)	1712	int active = ((W)w)->active;
1546	{
1547	ev_clear_pending (EV_A_ (W)w);
1548	if (expect_false (!ev_is_active (w)))
1549	return;
1550		1713
1551	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1552
1553	if (expect_true (((W)w)->active < periodiccnt--))	1714	if (expect_true (--active < --periodiccnt))
1554	{	1715	{
1555	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1716	periodics [active] = periodics [periodiccnt];
1556	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1717	adjustheap ((WT *)periodics, periodiccnt, active);
1557	}	1718	}
		1719	}
1558		1720
1559	ev_stop (EV_A_ (W)w);	1721	ev_stop (EV_A_ (W)w);
1560	}	1722	}
1561		1723
1562	void	1724	void noinline
1563	ev_periodic_again (EV_P_ ev_periodic *w)	1725	ev_periodic_again (EV_P_ ev_periodic *w)
1564	{	1726	{
1565	/* TODO: use adjustheap and recalculation */	1727	/* TODO: use adjustheap and recalculation */
1566	ev_periodic_stop (EV_A_ w);	1728	ev_periodic_stop (EV_A_ w);
1567	ev_periodic_start (EV_A_ w);	1729	ev_periodic_start (EV_A_ w);
…		…
1570		1732
1571	#ifndef SA_RESTART	1733	#ifndef SA_RESTART
1572	# define SA_RESTART 0	1734	# define SA_RESTART 0
1573	#endif	1735	#endif
1574		1736
1575	void	1737	void noinline
1576	ev_signal_start (EV_P_ ev_signal *w)	1738	ev_signal_start (EV_P_ ev_signal *w)
1577	{	1739	{
1578	#if EV_MULTIPLICITY	1740	#if EV_MULTIPLICITY
1579	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1741	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1580	#endif	1742	#endif
…		…
1599	sigaction (w->signum, &sa, 0);	1761	sigaction (w->signum, &sa, 0);
1600	#endif	1762	#endif
1601	}	1763	}
1602	}	1764	}
1603		1765
1604	void	1766	void noinline
1605	ev_signal_stop (EV_P_ ev_signal *w)	1767	ev_signal_stop (EV_P_ ev_signal *w)
1606	{	1768	{
1607	ev_clear_pending (EV_A_ (W)w);	1769	clear_pending (EV_A_ (W)w);
1608	if (expect_false (!ev_is_active (w)))	1770	if (expect_false (!ev_is_active (w)))
1609	return;	1771	return;
1610		1772
1611	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1773	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1612	ev_stop (EV_A_ (W)w);	1774	ev_stop (EV_A_ (W)w);
…		…
1623	#endif	1785	#endif
1624	if (expect_false (ev_is_active (w)))	1786	if (expect_false (ev_is_active (w)))
1625	return;	1787	return;
1626		1788
1627	ev_start (EV_A_ (W)w, 1);	1789	ev_start (EV_A_ (W)w, 1);
1628	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1790	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1629	}	1791	}
1630		1792
1631	void	1793	void
1632	ev_child_stop (EV_P_ ev_child *w)	1794	ev_child_stop (EV_P_ ev_child *w)
1633	{	1795	{
1634	ev_clear_pending (EV_A_ (W)w);	1796	clear_pending (EV_A_ (W)w);
1635	if (expect_false (!ev_is_active (w)))	1797	if (expect_false (!ev_is_active (w)))
1636	return;	1798	return;
1637		1799
1638	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1800	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1639	ev_stop (EV_A_ (W)w);	1801	ev_stop (EV_A_ (W)w);
1640	}	1802	}
1641		1803
1642	#if EV_STAT_ENABLE	1804	#if EV_STAT_ENABLE
1643		1805
…		…
1647	# endif	1809	# endif
1648		1810
1649	#define DEF_STAT_INTERVAL 5.0074891	1811	#define DEF_STAT_INTERVAL 5.0074891
1650	#define MIN_STAT_INTERVAL 0.1074891	1812	#define MIN_STAT_INTERVAL 0.1074891
1651		1813
		1814	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1815
		1816	#if EV_USE_INOTIFY
		1817	# define EV_INOTIFY_BUFSIZE 8192
		1818
		1819	static void noinline
		1820	infy_add (EV_P_ ev_stat *w)
		1821	{
		1822	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);
		1823
		1824	if (w->wd < 0)
		1825	{
		1826	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1827
		1828	/* monitor some parent directory for speedup hints */
		1829	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
		1830	{
		1831	char path [4096];
		1832	strcpy (path, w->path);
		1833
		1834	do
		1835	{
		1836	int mask = IN_MASK_ADD \| IN_DELETE_SELF \| IN_MOVE_SELF
		1837	\| (errno == EACCES ? IN_ATTRIB : IN_CREATE \| IN_MOVED_TO);
		1838
		1839	char *pend = strrchr (path, '/');
		1840
		1841	if (!pend)
		1842	break; /* whoops, no '/', complain to your admin */
		1843
		1844	*pend = 0;
		1845	w->wd = inotify_add_watch (fs_fd, path, mask);
		1846	}
		1847	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
		1848	}
		1849	}
		1850	else
		1851	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1852
		1853	if (w->wd >= 0)
		1854	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1855	}
		1856
		1857	static void noinline
		1858	infy_del (EV_P_ ev_stat *w)
		1859	{
		1860	int slot;
		1861	int wd = w->wd;
		1862
		1863	if (wd < 0)
		1864	return;
		1865
		1866	w->wd = -2;
		1867	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1868	wlist_del (&fs_hash [slot].head, (WL)w);
		1869
		1870	/* remove this watcher, if others are watching it, they will rearm */
		1871	inotify_rm_watch (fs_fd, wd);
		1872	}
		1873
		1874	static void noinline
		1875	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1876	{
		1877	if (slot < 0)
		1878	/* overflow, need to check for all hahs slots */
		1879	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1880	infy_wd (EV_A_ slot, wd, ev);
		1881	else
		1882	{
		1883	WL w_;
		1884
		1885	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1886	{
		1887	ev_stat w = (ev_stat )w_;
		1888	w_ = w_->next; /* lets us remove this watcher and all before it */
		1889
		1890	if (w->wd == wd \|\| wd == -1)
		1891	{
		1892	if (ev->mask & (IN_IGNORED \| IN_UNMOUNT \| IN_DELETE_SELF))
		1893	{
		1894	w->wd = -1;
		1895	infy_add (EV_A_ w); /* re-add, no matter what */
		1896	}
		1897
		1898	stat_timer_cb (EV_A_ &w->timer, 0);
		1899	}
		1900	}
		1901	}
		1902	}
		1903
		1904	static void
		1905	infy_cb (EV_P_ ev_io *w, int revents)
		1906	{
		1907	char buf [EV_INOTIFY_BUFSIZE];
		1908	struct inotify_event ev = (struct inotify_event )buf;
		1909	int ofs;
		1910	int len = read (fs_fd, buf, sizeof (buf));
		1911
		1912	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1913	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1914	}
		1915
		1916	void inline_size
		1917	infy_init (EV_P)
		1918	{
		1919	if (fs_fd != -2)
		1920	return;
		1921
		1922	fs_fd = inotify_init ();
		1923
		1924	if (fs_fd >= 0)
		1925	{
		1926	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1927	ev_set_priority (&fs_w, EV_MAXPRI);
		1928	ev_io_start (EV_A_ &fs_w);
		1929	}
		1930	}
		1931
		1932	void inline_size
		1933	infy_fork (EV_P)
		1934	{
		1935	int slot;
		1936
		1937	if (fs_fd < 0)
		1938	return;
		1939
		1940	close (fs_fd);
		1941	fs_fd = inotify_init ();
		1942
		1943	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1944	{
		1945	WL w_ = fs_hash [slot].head;
		1946	fs_hash [slot].head = 0;
		1947
		1948	while (w_)
		1949	{
		1950	ev_stat w = (ev_stat )w_;
		1951	w_ = w_->next; /* lets us add this watcher */
		1952
		1953	w->wd = -1;
		1954
		1955	if (fs_fd >= 0)
		1956	infy_add (EV_A_ w); /* re-add, no matter what */
		1957	else
		1958	ev_timer_start (EV_A_ &w->timer);
		1959	}
		1960
		1961	}
		1962	}
		1963
		1964	#endif
		1965
1652	void	1966	void
1653	ev_stat_stat (EV_P_ ev_stat *w)	1967	ev_stat_stat (EV_P_ ev_stat *w)
1654	{	1968	{
1655	if (lstat (w->path, &w->attr) < 0)	1969	if (lstat (w->path, &w->attr) < 0)
1656	w->attr.st_nlink = 0;	1970	w->attr.st_nlink = 0;
1657	else if (!w->attr.st_nlink)	1971	else if (!w->attr.st_nlink)
1658	w->attr.st_nlink = 1;	1972	w->attr.st_nlink = 1;
1659	}	1973	}
1660		1974
1661	static void	1975	static void noinline
1662	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	1976	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1663	{	1977	{
1664	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));	1978	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
1665		1979
1666	/* we copy this here each the time so that */	1980	/* we copy this here each the time so that */
1667	/* prev has the old value when the callback gets invoked */	1981	/* prev has the old value when the callback gets invoked */
1668	w->prev = w->attr;	1982	w->prev = w->attr;
1669	ev_stat_stat (EV_A_ w);	1983	ev_stat_stat (EV_A_ w);
1670		1984
1671	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))	1985	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1986	if (
		1987	w->prev.st_dev != w->attr.st_dev
		1988	\|\| w->prev.st_ino != w->attr.st_ino
		1989	\|\| w->prev.st_mode != w->attr.st_mode
		1990	\|\| w->prev.st_nlink != w->attr.st_nlink
		1991	\|\| w->prev.st_uid != w->attr.st_uid
		1992	\|\| w->prev.st_gid != w->attr.st_gid
		1993	\|\| w->prev.st_rdev != w->attr.st_rdev
		1994	\|\| w->prev.st_size != w->attr.st_size
		1995	\|\| w->prev.st_atime != w->attr.st_atime
		1996	\|\| w->prev.st_mtime != w->attr.st_mtime
		1997	\|\| w->prev.st_ctime != w->attr.st_ctime
		1998	) {
		1999	#if EV_USE_INOTIFY
		2000	infy_del (EV_A_ w);
		2001	infy_add (EV_A_ w);
		2002	ev_stat_stat (EV_A_ w); /* avoid race... */
		2003	#endif
		2004
1672	ev_feed_event (EV_A_ w, EV_STAT);	2005	ev_feed_event (EV_A_ w, EV_STAT);
		2006	}
1673	}	2007	}
1674		2008
1675	void	2009	void
1676	ev_stat_start (EV_P_ ev_stat *w)	2010	ev_stat_start (EV_P_ ev_stat *w)
1677	{	2011	{
…		…
1687	if (w->interval < MIN_STAT_INTERVAL)	2021	if (w->interval < MIN_STAT_INTERVAL)
1688	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;	2022	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1689		2023
1690	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2024	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1691	ev_set_priority (&w->timer, ev_priority (w));	2025	ev_set_priority (&w->timer, ev_priority (w));
		2026
		2027	#if EV_USE_INOTIFY
		2028	infy_init (EV_A);
		2029
		2030	if (fs_fd >= 0)
		2031	infy_add (EV_A_ w);
		2032	else
		2033	#endif
1692	ev_timer_start (EV_A_ &w->timer);	2034	ev_timer_start (EV_A_ &w->timer);
1693		2035
1694	ev_start (EV_A_ (W)w, 1);	2036	ev_start (EV_A_ (W)w, 1);
1695	}	2037	}
1696		2038
1697	void	2039	void
1698	ev_stat_stop (EV_P_ ev_stat *w)	2040	ev_stat_stop (EV_P_ ev_stat *w)
1699	{	2041	{
1700	ev_clear_pending (EV_A_ (W)w);	2042	clear_pending (EV_A_ (W)w);
1701	if (expect_false (!ev_is_active (w)))	2043	if (expect_false (!ev_is_active (w)))
1702	return;	2044	return;
1703		2045
		2046	#if EV_USE_INOTIFY
		2047	infy_del (EV_A_ w);
		2048	#endif
1704	ev_timer_stop (EV_A_ &w->timer);	2049	ev_timer_stop (EV_A_ &w->timer);
1705		2050
1706	ev_stop (EV_A_ (W)w);	2051	ev_stop (EV_A_ (W)w);
1707	}	2052	}
1708	#endif	2053	#endif
1709		2054
		2055	#if EV_IDLE_ENABLE
1710	void	2056	void
1711	ev_idle_start (EV_P_ ev_idle *w)	2057	ev_idle_start (EV_P_ ev_idle *w)
1712	{	2058	{
1713	if (expect_false (ev_is_active (w)))	2059	if (expect_false (ev_is_active (w)))
1714	return;	2060	return;
1715		2061
		2062	pri_adjust (EV_A_ (W)w);
		2063
		2064	{
		2065	int active = ++idlecnt [ABSPRI (w)];
		2066
		2067	++idleall;
1716	ev_start (EV_A_ (W)w, ++idlecnt);	2068	ev_start (EV_A_ (W)w, active);
		2069
1717	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);	2070	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1718	idles [idlecnt - 1] = w;	2071	idles [ABSPRI (w)][active - 1] = w;
		2072	}
1719	}	2073	}
1720		2074
1721	void	2075	void
1722	ev_idle_stop (EV_P_ ev_idle *w)	2076	ev_idle_stop (EV_P_ ev_idle *w)
1723	{	2077	{
1724	ev_clear_pending (EV_A_ (W)w);	2078	clear_pending (EV_A_ (W)w);
1725	if (expect_false (!ev_is_active (w)))	2079	if (expect_false (!ev_is_active (w)))
1726	return;	2080	return;
1727		2081
1728	{	2082	{
1729	int active = ((W)w)->active;	2083	int active = ((W)w)->active;
1730	idles [active - 1] = idles [--idlecnt];	2084
		2085	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
1731	((W)idles [active - 1])->active = active;	2086	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2087
		2088	ev_stop (EV_A_ (W)w);
		2089	--idleall;
1732	}	2090	}
1733
1734	ev_stop (EV_A_ (W)w);
1735	}	2091	}
		2092	#endif
1736		2093
1737	void	2094	void
1738	ev_prepare_start (EV_P_ ev_prepare *w)	2095	ev_prepare_start (EV_P_ ev_prepare *w)
1739	{	2096	{
1740	if (expect_false (ev_is_active (w)))	2097	if (expect_false (ev_is_active (w)))
…		…
1746	}	2103	}
1747		2104
1748	void	2105	void
1749	ev_prepare_stop (EV_P_ ev_prepare *w)	2106	ev_prepare_stop (EV_P_ ev_prepare *w)
1750	{	2107	{
1751	ev_clear_pending (EV_A_ (W)w);	2108	clear_pending (EV_A_ (W)w);
1752	if (expect_false (!ev_is_active (w)))	2109	if (expect_false (!ev_is_active (w)))
1753	return;	2110	return;
1754		2111
1755	{	2112	{
1756	int active = ((W)w)->active;	2113	int active = ((W)w)->active;
…		…
1773	}	2130	}
1774		2131
1775	void	2132	void
1776	ev_check_stop (EV_P_ ev_check *w)	2133	ev_check_stop (EV_P_ ev_check *w)
1777	{	2134	{
1778	ev_clear_pending (EV_A_ (W)w);	2135	clear_pending (EV_A_ (W)w);
1779	if (expect_false (!ev_is_active (w)))	2136	if (expect_false (!ev_is_active (w)))
1780	return;	2137	return;
1781		2138
1782	{	2139	{
1783	int active = ((W)w)->active;	2140	int active = ((W)w)->active;
…		…
1825	}	2182	}
1826		2183
1827	void	2184	void
1828	ev_embed_stop (EV_P_ ev_embed *w)	2185	ev_embed_stop (EV_P_ ev_embed *w)
1829	{	2186	{
1830	ev_clear_pending (EV_A_ (W)w);	2187	clear_pending (EV_A_ (W)w);
1831	if (expect_false (!ev_is_active (w)))	2188	if (expect_false (!ev_is_active (w)))
1832	return;	2189	return;
1833		2190
1834	ev_io_stop (EV_A_ &w->io);	2191	ev_io_stop (EV_A_ &w->io);
1835		2192
…		…
1850	}	2207	}
1851		2208
1852	void	2209	void
1853	ev_fork_stop (EV_P_ ev_fork *w)	2210	ev_fork_stop (EV_P_ ev_fork *w)
1854	{	2211	{
1855	ev_clear_pending (EV_A_ (W)w);	2212	clear_pending (EV_A_ (W)w);
1856	if (expect_false (!ev_is_active (w)))	2213	if (expect_false (!ev_is_active (w)))
1857	return;	2214	return;
1858		2215
1859	{	2216	{
1860	int active = ((W)w)->active;	2217	int active = ((W)w)->active;

Diff Legend

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

Comparing libev/ev.c (file contents): Revision 1.147 by root, Tue Nov 27 10:59:11 2007 UTC vs. Revision 1.178 by root, Tue Dec 11 18:36:11 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.147 by root, Tue Nov 27 10:59:11 2007 UTC vs.
Revision 1.178 by root, Tue Dec 11 18:36:11 2007 UTC