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

Comparing libev/ev.c (file contents):
Revision 1.148 by root, Tue Nov 27 11:11:13 2007 UTC vs.
Revision 1.173 by root, Sun Dec 9 19:42:57 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	/**/
178		220
179	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	221	#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) */	222	#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 */	223	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
183
184	#ifdef EV_H
185	# include EV_H
186	#else
187	# include "ev.h"
188	#endif
189		224
190	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
191	# define expect(expr,value) __builtin_expect ((expr),(value))	226	# 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))	227	# 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	228	#else
201	# define expect(expr,value) (expr)	229	# define expect(expr,value) (expr)
202	# define inline_speed static
203	# define inline_size static
204	# define noinline	230	# define noinline
		231	# if __STDC_VERSION__ < 199901L
		232	# define inline
		233	# endif
205	#endif	234	#endif
206		235
207	#define expect_false(expr) expect ((expr) != 0, 0)	236	#define expect_false(expr) expect ((expr) != 0, 0)
208	#define expect_true(expr) expect ((expr) != 0, 1)	237	#define expect_true(expr) expect ((expr) != 0, 1)
		238	#define inline_size static inline
		239
		240	#if EV_MINIMAL
		241	# define inline_speed static noinline
		242	#else
		243	# define inline_speed static inline
		244	#endif
209		245
210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	246	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	247	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
212		248
213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	249	#define EMPTY /* required for microsofts broken pseudo-c compiler */
214	#define EMPTY2(a,b) /* used to suppress some warnings */	250	#define EMPTY2(a,b) /* used to suppress some warnings */
215		251
216	typedef ev_watcher *W;	252	typedef ev_watcher *W;
217	typedef ev_watcher_list *WL;	253	typedef ev_watcher_list *WL;
218	typedef ev_watcher_time *WT;	254	typedef ev_watcher_time *WT;
…		…
254	ev_set_allocator (void (cb)(void *ptr, long size))	290	ev_set_allocator (void (cb)(void *ptr, long size))
255	{	291	{
256	alloc = cb;	292	alloc = cb;
257	}	293	}
258		294
259	static void *	295	inline_speed void *
260	ev_realloc (void *ptr, long size)	296	ev_realloc (void *ptr, long size)
261	{	297	{
262	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	298	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
263		299
264	if (!ptr && size)	300	if (!ptr && size)
…		…
288	typedef struct	324	typedef struct
289	{	325	{
290	W w;	326	W w;
291	int events;	327	int events;
292	} ANPENDING;	328	} ANPENDING;
		329
		330	#if EV_USE_INOTIFY
		331	typedef struct
		332	{
		333	WL head;
		334	} ANFS;
		335	#endif
293		336
294	#if EV_MULTIPLICITY	337	#if EV_MULTIPLICITY
295		338
296	struct ev_loop	339	struct ev_loop
297	{	340	{
…		…
354	{	397	{
355	return ev_rt_now;	398	return ev_rt_now;
356	}	399	}
357	#endif	400	#endif
358		401
359	#define array_roundsize(type,n) (((n) \| 4) & ~3)	402	int inline_size
		403	array_nextsize (int elem, int cur, int cnt)
		404	{
		405	int ncur = cur + 1;
		406
		407	do
		408	ncur <<= 1;
		409	while (cnt > ncur);
		410
		411	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		412	if (elem * ncur > 4096)
		413	{
		414	ncur *= elem;
		415	ncur = (ncur + elem + 4095 + sizeof (void ) 4) & ~4095;
		416	ncur = ncur - sizeof (void ) 4;
		417	ncur /= elem;
		418	}
		419
		420	return ncur;
		421	}
		422
		423	static noinline void *
		424	array_realloc (int elem, void base, int cur, int cnt)
		425	{
		426	cur = array_nextsize (elem, cur, cnt);
		427	return ev_realloc (base, elem * *cur);
		428	}
360		429
361	#define array_needsize(type,base,cur,cnt,init) \	430	#define array_needsize(type,base,cur,cnt,init) \
362	if (expect_false ((cnt) > cur)) \	431	if (expect_false ((cnt) > (cur))) \
363	{ \	432	{ \
364	int newcnt = cur; \	433	int ocur_ = (cur); \
365	do \	434	(base) = (type *)array_realloc \
366	{ \	435	(sizeof (type), (base), &(cur), (cnt)); \
367	newcnt = array_roundsize (type, newcnt << 1); \	436	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	}	437	}
375		438
		439	#if 0
376	#define array_slim(type,stem) \	440	#define array_slim(type,stem) \
377	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	441	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
378	{ \	442	{ \
379	stem ## max = array_roundsize (stem ## cnt >> 1); \	443	stem ## max = array_roundsize (stem ## cnt >> 1); \
380	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\	444	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
381	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	445	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
382	}	446	}
		447	#endif
383		448
384	#define array_free(stem, idx) \	449	#define array_free(stem, idx) \
385	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	450	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
386		451
387	/*****************************************************************************/	452	/*****************************************************************************/
388		453
389	void noinline	454	void noinline
390	ev_feed_event (EV_P_ void *w, int revents)	455	ev_feed_event (EV_P_ void *w, int revents)
391	{	456	{
392	W w_ = (W)w;	457	W w_ = (W)w;
		458	int pri = ABSPRI (w_);
393		459
394	if (expect_false (w_->pending))	460	if (expect_false (w_->pending))
		461	pendings [pri][w_->pending - 1].events \|= revents;
		462	else
395	{	463	{
		464	w_->pending = ++pendingcnt [pri];
		465	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		466	pendings [pri][w_->pending - 1].w = w_;
396	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;	467	pendings [pri][w_->pending - 1].events = revents;
397	return;
398	}	468	}
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	}	469	}
405		470
406	void inline_size	471	void inline_size
407	queue_events (EV_P_ W *events, int eventcnt, int type)	472	queue_events (EV_P_ W *events, int eventcnt, int type)
408	{	473	{
…		…
443	}	508	}
444		509
445	void	510	void
446	ev_feed_fd_event (EV_P_ int fd, int revents)	511	ev_feed_fd_event (EV_P_ int fd, int revents)
447	{	512	{
		513	if (fd >= 0 && fd < anfdmax)
448	fd_event (EV_A_ fd, revents);	514	fd_event (EV_A_ fd, revents);
449	}	515	}
450		516
451	void inline_size	517	void inline_size
452	fd_reify (EV_P)	518	fd_reify (EV_P)
453	{	519	{
…		…
547	static void noinline	613	static void noinline
548	fd_rearm_all (EV_P)	614	fd_rearm_all (EV_P)
549	{	615	{
550	int fd;	616	int fd;
551		617
552	/* this should be highly optimised to not do anything but set a flag */
553	for (fd = 0; fd < anfdmax; ++fd)	618	for (fd = 0; fd < anfdmax; ++fd)
554	if (anfds [fd].events)	619	if (anfds [fd].events)
555	{	620	{
556	anfds [fd].events = 0;	621	anfds [fd].events = 0;
557	fd_change (EV_A_ fd);	622	fd_change (EV_A_ fd);
…		…
684	for (signum = signalmax; signum--; )	749	for (signum = signalmax; signum--; )
685	if (signals [signum].gotsig)	750	if (signals [signum].gotsig)
686	ev_feed_signal_event (EV_A_ signum + 1);	751	ev_feed_signal_event (EV_A_ signum + 1);
687	}	752	}
688		753
689	void inline_size	754	void inline_speed
690	fd_intern (int fd)	755	fd_intern (int fd)
691	{	756	{
692	#ifdef _WIN32	757	#ifdef _WIN32
693	int arg = 1;	758	int arg = 1;
694	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	759	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
709	ev_unref (EV_A); /* child watcher should not keep loop alive */	774	ev_unref (EV_A); /* child watcher should not keep loop alive */
710	}	775	}
711		776
712	/*****************************************************************************/	777	/*****************************************************************************/
713		778
714	static ev_child *childs [PID_HASHSIZE];	779	static ev_child *childs [EV_PID_HASHSIZE];
715		780
716	#ifndef _WIN32	781	#ifndef _WIN32
717		782
718	static ev_signal childev;	783	static ev_signal childev;
719		784
720	void inline_speed	785	void inline_speed
721	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	786	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
722	{	787	{
723	ev_child *w;	788	ev_child *w;
724		789
725	for (w = (ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	790	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
726	if (w->pid == pid \|\| !w->pid)	791	if (w->pid == pid \|\| !w->pid)
727	{	792	{
728	ev_priority (w) = ev_priority (sw); /* need to do it now */	793	ev_set_priority (w, ev_priority (sw)); /* need to do it now */
729	w->rpid = pid;	794	w->rpid = pid;
730	w->rstatus = status;	795	w->rstatus = status;
731	ev_feed_event (EV_A_ (W)w, EV_CHILD);	796	ev_feed_event (EV_A_ (W)w, EV_CHILD);
732	}	797	}
733	}	798	}
734		799
735	#ifndef WCONTINUED	800	#ifndef WCONTINUED
…		…
751	/* make sure we are called again until all childs have been reaped */	816	/* 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 */	817	/* 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);	818	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
754		819
755	child_reap (EV_A_ sw, pid, pid, status);	820	child_reap (EV_A_ sw, pid, pid, status);
		821	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 */	822	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
757	}	823	}
758		824
759	#endif	825	#endif
760		826
761	/*****************************************************************************/	827	/*****************************************************************************/
…		…
844	ev_backend (EV_P)	910	ev_backend (EV_P)
845	{	911	{
846	return backend;	912	return backend;
847	}	913	}
848		914
849	static void	915	unsigned int
		916	ev_loop_count (EV_P)
		917	{
		918	return loop_count;
		919	}
		920
		921	static void noinline
850	loop_init (EV_P_ unsigned int flags)	922	loop_init (EV_P_ unsigned int flags)
851	{	923	{
852	if (!backend)	924	if (!backend)
853	{	925	{
854	#if EV_USE_MONOTONIC	926	#if EV_USE_MONOTONIC
…		…
862	ev_rt_now = ev_time ();	934	ev_rt_now = ev_time ();
863	mn_now = get_clock ();	935	mn_now = get_clock ();
864	now_floor = mn_now;	936	now_floor = mn_now;
865	rtmn_diff = ev_rt_now - mn_now;	937	rtmn_diff = ev_rt_now - mn_now;
866		938
		939	/* pid check not overridable via env */
		940	#ifndef _WIN32
		941	if (flags & EVFLAG_FORKCHECK)
		942	curpid = getpid ();
		943	#endif
		944
867	if (!(flags & EVFLAG_NOENV)	945	if (!(flags & EVFLAG_NOENV)
868	&& !enable_secure ()	946	&& !enable_secure ()
869	&& getenv ("LIBEV_FLAGS"))	947	&& getenv ("LIBEV_FLAGS"))
870	flags = atoi (getenv ("LIBEV_FLAGS"));	948	flags = atoi (getenv ("LIBEV_FLAGS"));
871		949
872	if (!(flags & 0x0000ffffUL))	950	if (!(flags & 0x0000ffffUL))
873	flags \|= ev_recommended_backends ();	951	flags \|= ev_recommended_backends ();
874		952
875	backend = 0;	953	backend = 0;
		954	backend_fd = -1;
		955	#if EV_USE_INOTIFY
		956	fs_fd = -2;
		957	#endif
		958
876	#if EV_USE_PORT	959	#if EV_USE_PORT
877	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	960	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
878	#endif	961	#endif
879	#if EV_USE_KQUEUE	962	#if EV_USE_KQUEUE
880	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	963	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
892	ev_init (&sigev, sigcb);	975	ev_init (&sigev, sigcb);
893	ev_set_priority (&sigev, EV_MAXPRI);	976	ev_set_priority (&sigev, EV_MAXPRI);
894	}	977	}
895	}	978	}
896		979
897	static void	980	static void noinline
898	loop_destroy (EV_P)	981	loop_destroy (EV_P)
899	{	982	{
900	int i;	983	int i;
		984
		985	#if EV_USE_INOTIFY
		986	if (fs_fd >= 0)
		987	close (fs_fd);
		988	#endif
		989
		990	if (backend_fd >= 0)
		991	close (backend_fd);
901		992
902	#if EV_USE_PORT	993	#if EV_USE_PORT
903	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	994	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
904	#endif	995	#endif
905	#if EV_USE_KQUEUE	996	#if EV_USE_KQUEUE
…		…
914	#if EV_USE_SELECT	1005	#if EV_USE_SELECT
915	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1006	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
916	#endif	1007	#endif
917		1008
918	for (i = NUMPRI; i--; )	1009	for (i = NUMPRI; i--; )
		1010	{
919	array_free (pending, [i]);	1011	array_free (pending, [i]);
		1012	#if EV_IDLE_ENABLE
		1013	array_free (idle, [i]);
		1014	#endif
		1015	}
920		1016
921	/* have to use the microsoft-never-gets-it-right macro */	1017	/* have to use the microsoft-never-gets-it-right macro */
922	array_free (fdchange, EMPTY0);	1018	array_free (fdchange, EMPTY);
923	array_free (timer, EMPTY0);	1019	array_free (timer, EMPTY);
924	#if EV_PERIODIC_ENABLE	1020	#if EV_PERIODIC_ENABLE
925	array_free (periodic, EMPTY0);	1021	array_free (periodic, EMPTY);
926	#endif	1022	#endif
927	array_free (idle, EMPTY0);
928	array_free (prepare, EMPTY0);	1023	array_free (prepare, EMPTY);
929	array_free (check, EMPTY0);	1024	array_free (check, EMPTY);
930		1025
931	backend = 0;	1026	backend = 0;
932	}	1027	}
933		1028
934	static void	1029	void inline_size infy_fork (EV_P);
		1030
		1031	void inline_size
935	loop_fork (EV_P)	1032	loop_fork (EV_P)
936	{	1033	{
937	#if EV_USE_PORT	1034	#if EV_USE_PORT
938	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1035	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
939	#endif	1036	#endif
940	#if EV_USE_KQUEUE	1037	#if EV_USE_KQUEUE
941	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1038	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
942	#endif	1039	#endif
943	#if EV_USE_EPOLL	1040	#if EV_USE_EPOLL
944	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1041	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1042	#endif
		1043	#if EV_USE_INOTIFY
		1044	infy_fork (EV_A);
945	#endif	1045	#endif
946		1046
947	if (ev_is_active (&sigev))	1047	if (ev_is_active (&sigev))
948	{	1048	{
949	/* default loop */	1049	/* default loop */
…		…
1065	postfork = 1;	1165	postfork = 1;
1066	}	1166	}
1067		1167
1068	/*****************************************************************************/	1168	/*****************************************************************************/
1069		1169
1070	int inline_size	1170	void
1071	any_pending (EV_P)	1171	ev_invoke (EV_P_ void *w, int revents)
1072	{	1172	{
1073	int pri;	1173	EV_CB_INVOKE ((W)w, revents);
1074
1075	for (pri = NUMPRI; pri--; )
1076	if (pendingcnt [pri])
1077	return 1;
1078
1079	return 0;
1080	}	1174	}
1081		1175
1082	void inline_speed	1176	void inline_speed
1083	call_pending (EV_P)	1177	call_pending (EV_P)
1084	{	1178	{
…		…
1089	{	1183	{
1090	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1184	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1091		1185
1092	if (expect_true (p->w))	1186	if (expect_true (p->w))
1093	{	1187	{
1094	assert (("non-pending watcher on pending list", p->w->pending));	1188	/assert (("non-pending watcher on pending list", p->w->pending));/
1095		1189
1096	p->w->pending = 0;	1190	p->w->pending = 0;
1097	EV_CB_INVOKE (p->w, p->events);	1191	EV_CB_INVOKE (p->w, p->events);
1098	}	1192	}
1099	}	1193	}
…		…
1104	{	1198	{
1105	while (timercnt && ((WT)timers [0])->at <= mn_now)	1199	while (timercnt && ((WT)timers [0])->at <= mn_now)
1106	{	1200	{
1107	ev_timer *w = timers [0];	1201	ev_timer *w = timers [0];
1108		1202
1109	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1203	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1110		1204
1111	/* first reschedule or stop timer */	1205	/* first reschedule or stop timer */
1112	if (w->repeat)	1206	if (w->repeat)
1113	{	1207	{
1114	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1208	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
…		…
1132	{	1226	{
1133	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1227	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1134	{	1228	{
1135	ev_periodic *w = periodics [0];	1229	ev_periodic *w = periodics [0];
1136		1230
1137	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1231	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1138		1232
1139	/* first reschedule or stop timer */	1233	/* first reschedule or stop timer */
1140	if (w->reschedule_cb)	1234	if (w->reschedule_cb)
1141	{	1235	{
1142	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1236	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1143	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1237	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1144	downheap ((WT *)periodics, periodiccnt, 0);	1238	downheap ((WT *)periodics, periodiccnt, 0);
1145	}	1239	}
1146	else if (w->interval)	1240	else if (w->interval)
1147	{	1241	{
1148	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1242	((WT)w)->at = w->offset + floor ((ev_rt_now - w->offset) / w->interval + 1.) * w->interval;
1149	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1243	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);	1244	downheap ((WT *)periodics, periodiccnt, 0);
1151	}	1245	}
1152	else	1246	else
1153	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1247	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
…		…
1167	ev_periodic *w = periodics [i];	1261	ev_periodic *w = periodics [i];
1168		1262
1169	if (w->reschedule_cb)	1263	if (w->reschedule_cb)
1170	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1264	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1171	else if (w->interval)	1265	else if (w->interval)
1172	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1266	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1173	}	1267	}
1174		1268
1175	/* now rebuild the heap */	1269	/* now rebuild the heap */
1176	for (i = periodiccnt >> 1; i--; )	1270	for (i = periodiccnt >> 1; i--; )
1177	downheap ((WT *)periodics, periodiccnt, i);	1271	downheap ((WT *)periodics, periodiccnt, i);
1178	}	1272	}
1179	#endif	1273	#endif
1180		1274
		1275	#if EV_IDLE_ENABLE
		1276	void inline_size
		1277	idle_reify (EV_P)
		1278	{
		1279	if (expect_false (idleall))
		1280	{
		1281	int pri;
		1282
		1283	for (pri = NUMPRI; pri--; )
		1284	{
		1285	if (pendingcnt [pri])
		1286	break;
		1287
		1288	if (idlecnt [pri])
		1289	{
		1290	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1291	break;
		1292	}
		1293	}
		1294	}
		1295	}
		1296	#endif
		1297
1181	int inline_size	1298	int inline_size
1182	time_update_monotonic (EV_P)	1299	time_update_monotonic (EV_P)
1183	{	1300	{
1184	mn_now = get_clock ();	1301	mn_now = get_clock ();
1185		1302
…		…
1209	ev_tstamp odiff = rtmn_diff;	1326	ev_tstamp odiff = rtmn_diff;
1210		1327
1211	/* loop a few times, before making important decisions.	1328	/* loop a few times, before making important decisions.
1212	* on the choice of "4": one iteration isn't enough,	1329	* on the choice of "4": one iteration isn't enough,
1213	* in case we get preempted during the calls to	1330	* in case we get preempted during the calls to
1214	* ev_time and get_clock. a second call is almost guarenteed	1331	* ev_time and get_clock. a second call is almost guaranteed
1215	* to succeed in that case, though. and looping a few more times	1332	* 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	1333	* doesn't hurt either as we only do this on time-jumps or
1217	* in the unlikely event of getting preempted here.	1334	* in the unlikely event of having been preempted here.
1218	*/	1335	*/
1219	for (i = 4; --i; )	1336	for (i = 4; --i; )
1220	{	1337	{
1221	rtmn_diff = ev_rt_now - mn_now;	1338	rtmn_diff = ev_rt_now - mn_now;
1222		1339
…		…
1244	{	1361	{
1245	#if EV_PERIODIC_ENABLE	1362	#if EV_PERIODIC_ENABLE
1246	periodics_reschedule (EV_A);	1363	periodics_reschedule (EV_A);
1247	#endif	1364	#endif
1248		1365
1249	/* adjust timers. this is easy, as the offset is the same for all */	1366	/* adjust timers. this is easy, as the offset is the same for all of them */
1250	for (i = 0; i < timercnt; ++i)	1367	for (i = 0; i < timercnt; ++i)
1251	((WT)timers [i])->at += ev_rt_now - mn_now;	1368	((WT)timers [i])->at += ev_rt_now - mn_now;
1252	}	1369	}
1253		1370
1254	mn_now = ev_rt_now;	1371	mn_now = ev_rt_now;
…		…
1274	{	1391	{
1275	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)	1392	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
1276	? EVUNLOOP_ONE	1393	? EVUNLOOP_ONE
1277	: EVUNLOOP_CANCEL;	1394	: EVUNLOOP_CANCEL;
1278		1395
1279	while (activecnt)	1396	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1397
		1398	do
1280	{	1399	{
1281	/* we might have forked, so reify kernel state if necessary */	1400	#ifndef _WIN32
		1401	if (expect_false (curpid)) /* penalise the forking check even more */
		1402	if (expect_false (getpid () != curpid))
		1403	{
		1404	curpid = getpid ();
		1405	postfork = 1;
		1406	}
		1407	#endif
		1408
1282	#if EV_FORK_ENABLE	1409	#if EV_FORK_ENABLE
		1410	/* we might have forked, so queue fork handlers */
1283	if (expect_false (postfork))	1411	if (expect_false (postfork))
1284	if (forkcnt)	1412	if (forkcnt)
1285	{	1413	{
1286	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	1414	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1287	call_pending (EV_A);	1415	call_pending (EV_A);
1288	}	1416	}
1289	#endif	1417	#endif
1290		1418
1291	/* queue check watchers (and execute them) */	1419	/* queue prepare watchers (and execute them) */
1292	if (expect_false (preparecnt))	1420	if (expect_false (preparecnt))
1293	{	1421	{
1294	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1422	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1295	call_pending (EV_A);	1423	call_pending (EV_A);
1296	}	1424	}
1297		1425
		1426	if (expect_false (!activecnt))
		1427	break;
		1428
1298	/* we might have forked, so reify kernel state if necessary */	1429	/* we might have forked, so reify kernel state if necessary */
1299	if (expect_false (postfork))	1430	if (expect_false (postfork))
1300	loop_fork (EV_A);	1431	loop_fork (EV_A);
1301		1432
1302	/* update fd-related kernel structures */	1433	/* update fd-related kernel structures */
1303	fd_reify (EV_A);	1434	fd_reify (EV_A);
1304		1435
1305	/* calculate blocking time */	1436	/* calculate blocking time */
1306	{	1437	{
1307	double block;	1438	ev_tstamp block;
1308		1439
1309	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1440	if (expect_false (flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt))
1310	block = 0.; /* do not block at all */	1441	block = 0.; /* do not block at all */
1311	else	1442	else
1312	{	1443	{
1313	/* update time to cancel out callback processing overhead */	1444	/* update time to cancel out callback processing overhead */
1314	#if EV_USE_MONOTONIC	1445	#if EV_USE_MONOTONIC
…		…
1338	#endif	1469	#endif
1339		1470
1340	if (expect_false (block < 0.)) block = 0.;	1471	if (expect_false (block < 0.)) block = 0.;
1341	}	1472	}
1342		1473
		1474	++loop_count;
1343	backend_poll (EV_A_ block);	1475	backend_poll (EV_A_ block);
1344	}	1476	}
1345		1477
1346	/* update ev_rt_now, do magic */	1478	/* update ev_rt_now, do magic */
1347	time_update (EV_A);	1479	time_update (EV_A);
…		…
1350	timers_reify (EV_A); /* relative timers called last */	1482	timers_reify (EV_A); /* relative timers called last */
1351	#if EV_PERIODIC_ENABLE	1483	#if EV_PERIODIC_ENABLE
1352	periodics_reify (EV_A); /* absolute timers called first */	1484	periodics_reify (EV_A); /* absolute timers called first */
1353	#endif	1485	#endif
1354		1486
		1487	#if EV_IDLE_ENABLE
1355	/* queue idle watchers unless other events are pending */	1488	/* queue idle watchers unless other events are pending */
1356	if (idlecnt && !any_pending (EV_A))	1489	idle_reify (EV_A);
1357	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1490	#endif
1358		1491
1359	/* queue check watchers, to be executed first */	1492	/* queue check watchers, to be executed first */
1360	if (expect_false (checkcnt))	1493	if (expect_false (checkcnt))
1361	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1494	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1362		1495
1363	call_pending (EV_A);	1496	call_pending (EV_A);
1364		1497
1365	if (expect_false (loop_done))
1366	break;
1367	}	1498	}
		1499	while (expect_true (activecnt && !loop_done));
1368		1500
1369	if (loop_done == EVUNLOOP_ONE)	1501	if (loop_done == EVUNLOOP_ONE)
1370	loop_done = EVUNLOOP_CANCEL;	1502	loop_done = EVUNLOOP_CANCEL;
1371	}	1503	}
1372		1504
…		…
1399	head = &(*head)->next;	1531	head = &(*head)->next;
1400	}	1532	}
1401	}	1533	}
1402		1534
1403	void inline_speed	1535	void inline_speed
1404	ev_clear_pending (EV_P_ W w)	1536	clear_pending (EV_P_ W w)
1405	{	1537	{
1406	if (w->pending)	1538	if (w->pending)
1407	{	1539	{
1408	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1540	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1409	w->pending = 0;	1541	w->pending = 0;
1410	}	1542	}
1411	}	1543	}
1412		1544
		1545	int
		1546	ev_clear_pending (EV_P_ void *w)
		1547	{
		1548	W w_ = (W)w;
		1549	int pending = w_->pending;
		1550
		1551	if (expect_true (pending))
		1552	{
		1553	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1554	w_->pending = 0;
		1555	p->w = 0;
		1556	return p->events;
		1557	}
		1558	else
		1559	return 0;
		1560	}
		1561
		1562	void inline_size
		1563	pri_adjust (EV_P_ W w)
		1564	{
		1565	int pri = w->priority;
		1566	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1567	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1568	w->priority = pri;
		1569	}
		1570
1413	void inline_speed	1571	void inline_speed
1414	ev_start (EV_P_ W w, int active)	1572	ev_start (EV_P_ W w, int active)
1415	{	1573	{
1416	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1574	pri_adjust (EV_A_ w);
1417	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1418
1419	w->active = active;	1575	w->active = active;
1420	ev_ref (EV_A);	1576	ev_ref (EV_A);
1421	}	1577	}
1422		1578
1423	void inline_size	1579	void inline_size
…		…
1427	w->active = 0;	1583	w->active = 0;
1428	}	1584	}
1429		1585
1430	/*****************************************************************************/	1586	/*****************************************************************************/
1431		1587
1432	void	1588	void noinline
1433	ev_io_start (EV_P_ ev_io *w)	1589	ev_io_start (EV_P_ ev_io *w)
1434	{	1590	{
1435	int fd = w->fd;	1591	int fd = w->fd;
1436		1592
1437	if (expect_false (ev_is_active (w)))	1593	if (expect_false (ev_is_active (w)))
…		…
1444	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1600	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1445		1601
1446	fd_change (EV_A_ fd);	1602	fd_change (EV_A_ fd);
1447	}	1603	}
1448		1604
1449	void	1605	void noinline
1450	ev_io_stop (EV_P_ ev_io *w)	1606	ev_io_stop (EV_P_ ev_io *w)
1451	{	1607	{
1452	ev_clear_pending (EV_A_ (W)w);	1608	clear_pending (EV_A_ (W)w);
1453	if (expect_false (!ev_is_active (w)))	1609	if (expect_false (!ev_is_active (w)))
1454	return;	1610	return;
1455		1611
1456	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1612	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1457		1613
…		…
1459	ev_stop (EV_A_ (W)w);	1615	ev_stop (EV_A_ (W)w);
1460		1616
1461	fd_change (EV_A_ w->fd);	1617	fd_change (EV_A_ w->fd);
1462	}	1618	}
1463		1619
1464	void	1620	void noinline
1465	ev_timer_start (EV_P_ ev_timer *w)	1621	ev_timer_start (EV_P_ ev_timer *w)
1466	{	1622	{
1467	if (expect_false (ev_is_active (w)))	1623	if (expect_false (ev_is_active (w)))
1468	return;	1624	return;
1469		1625
…		…
1474	ev_start (EV_A_ (W)w, ++timercnt);	1630	ev_start (EV_A_ (W)w, ++timercnt);
1475	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1631	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1476	timers [timercnt - 1] = w;	1632	timers [timercnt - 1] = w;
1477	upheap ((WT *)timers, timercnt - 1);	1633	upheap ((WT *)timers, timercnt - 1);
1478		1634
		1635	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
		1636	}
		1637
		1638	void noinline
		1639	ev_timer_stop (EV_P_ ev_timer *w)
		1640	{
		1641	clear_pending (EV_A_ (W)w);
		1642	if (expect_false (!ev_is_active (w)))
		1643	return;
		1644
1479	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1645	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1480	}
1481		1646
1482	void	1647	{
1483	ev_timer_stop (EV_P_ ev_timer *w)	1648	int active = ((W)w)->active;
1484	{
1485	ev_clear_pending (EV_A_ (W)w);
1486	if (expect_false (!ev_is_active (w)))
1487	return;
1488		1649
1489	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1490
1491	if (expect_true (((W)w)->active < timercnt--))	1650	if (expect_true (--active < --timercnt))
1492	{	1651	{
1493	timers [((W)w)->active - 1] = timers [timercnt];	1652	timers [active] = timers [timercnt];
1494	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1653	adjustheap ((WT *)timers, timercnt, active);
1495	}	1654	}
		1655	}
1496		1656
1497	((WT)w)->at -= mn_now;	1657	((WT)w)->at -= mn_now;
1498		1658
1499	ev_stop (EV_A_ (W)w);	1659	ev_stop (EV_A_ (W)w);
1500	}	1660	}
1501		1661
1502	void	1662	void noinline
1503	ev_timer_again (EV_P_ ev_timer *w)	1663	ev_timer_again (EV_P_ ev_timer *w)
1504	{	1664	{
1505	if (ev_is_active (w))	1665	if (ev_is_active (w))
1506	{	1666	{
1507	if (w->repeat)	1667	if (w->repeat)
…		…
1518	ev_timer_start (EV_A_ w);	1678	ev_timer_start (EV_A_ w);
1519	}	1679	}
1520	}	1680	}
1521		1681
1522	#if EV_PERIODIC_ENABLE	1682	#if EV_PERIODIC_ENABLE
1523	void	1683	void noinline
1524	ev_periodic_start (EV_P_ ev_periodic *w)	1684	ev_periodic_start (EV_P_ ev_periodic *w)
1525	{	1685	{
1526	if (expect_false (ev_is_active (w)))	1686	if (expect_false (ev_is_active (w)))
1527	return;	1687	return;
1528		1688
…		…
1530	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1690	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1531	else if (w->interval)	1691	else if (w->interval)
1532	{	1692	{
1533	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1693	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1534	/* this formula differs from the one in periodic_reify because we do not always round up */	1694	/* this formula differs from the one in periodic_reify because we do not always round up */
1535	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1695	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1536	}	1696	}
		1697	else
		1698	((WT)w)->at = w->offset;
1537		1699
1538	ev_start (EV_A_ (W)w, ++periodiccnt);	1700	ev_start (EV_A_ (W)w, ++periodiccnt);
1539	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1701	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1540	periodics [periodiccnt - 1] = w;	1702	periodics [periodiccnt - 1] = w;
1541	upheap ((WT *)periodics, periodiccnt - 1);	1703	upheap ((WT *)periodics, periodiccnt - 1);
1542		1704
		1705	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
		1706	}
		1707
		1708	void noinline
		1709	ev_periodic_stop (EV_P_ ev_periodic *w)
		1710	{
		1711	clear_pending (EV_A_ (W)w);
		1712	if (expect_false (!ev_is_active (w)))
		1713	return;
		1714
1543	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1715	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1544	}
1545		1716
1546	void	1717	{
1547	ev_periodic_stop (EV_P_ ev_periodic *w)	1718	int active = ((W)w)->active;
1548	{
1549	ev_clear_pending (EV_A_ (W)w);
1550	if (expect_false (!ev_is_active (w)))
1551	return;
1552		1719
1553	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1554
1555	if (expect_true (((W)w)->active < periodiccnt--))	1720	if (expect_true (--active < --periodiccnt))
1556	{	1721	{
1557	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1722	periodics [active] = periodics [periodiccnt];
1558	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1723	adjustheap ((WT *)periodics, periodiccnt, active);
1559	}	1724	}
		1725	}
1560		1726
1561	ev_stop (EV_A_ (W)w);	1727	ev_stop (EV_A_ (W)w);
1562	}	1728	}
1563		1729
1564	void	1730	void noinline
1565	ev_periodic_again (EV_P_ ev_periodic *w)	1731	ev_periodic_again (EV_P_ ev_periodic *w)
1566	{	1732	{
1567	/* TODO: use adjustheap and recalculation */	1733	/* TODO: use adjustheap and recalculation */
1568	ev_periodic_stop (EV_A_ w);	1734	ev_periodic_stop (EV_A_ w);
1569	ev_periodic_start (EV_A_ w);	1735	ev_periodic_start (EV_A_ w);
…		…
1572		1738
1573	#ifndef SA_RESTART	1739	#ifndef SA_RESTART
1574	# define SA_RESTART 0	1740	# define SA_RESTART 0
1575	#endif	1741	#endif
1576		1742
1577	void	1743	void noinline
1578	ev_signal_start (EV_P_ ev_signal *w)	1744	ev_signal_start (EV_P_ ev_signal *w)
1579	{	1745	{
1580	#if EV_MULTIPLICITY	1746	#if EV_MULTIPLICITY
1581	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1747	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1582	#endif	1748	#endif
…		…
1601	sigaction (w->signum, &sa, 0);	1767	sigaction (w->signum, &sa, 0);
1602	#endif	1768	#endif
1603	}	1769	}
1604	}	1770	}
1605		1771
1606	void	1772	void noinline
1607	ev_signal_stop (EV_P_ ev_signal *w)	1773	ev_signal_stop (EV_P_ ev_signal *w)
1608	{	1774	{
1609	ev_clear_pending (EV_A_ (W)w);	1775	clear_pending (EV_A_ (W)w);
1610	if (expect_false (!ev_is_active (w)))	1776	if (expect_false (!ev_is_active (w)))
1611	return;	1777	return;
1612		1778
1613	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1779	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1614	ev_stop (EV_A_ (W)w);	1780	ev_stop (EV_A_ (W)w);
…		…
1625	#endif	1791	#endif
1626	if (expect_false (ev_is_active (w)))	1792	if (expect_false (ev_is_active (w)))
1627	return;	1793	return;
1628		1794
1629	ev_start (EV_A_ (W)w, 1);	1795	ev_start (EV_A_ (W)w, 1);
1630	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1796	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1631	}	1797	}
1632		1798
1633	void	1799	void
1634	ev_child_stop (EV_P_ ev_child *w)	1800	ev_child_stop (EV_P_ ev_child *w)
1635	{	1801	{
1636	ev_clear_pending (EV_A_ (W)w);	1802	clear_pending (EV_A_ (W)w);
1637	if (expect_false (!ev_is_active (w)))	1803	if (expect_false (!ev_is_active (w)))
1638	return;	1804	return;
1639		1805
1640	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1806	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1641	ev_stop (EV_A_ (W)w);	1807	ev_stop (EV_A_ (W)w);
1642	}	1808	}
1643		1809
1644	#if EV_STAT_ENABLE	1810	#if EV_STAT_ENABLE
1645		1811
…		…
1649	# endif	1815	# endif
1650		1816
1651	#define DEF_STAT_INTERVAL 5.0074891	1817	#define DEF_STAT_INTERVAL 5.0074891
1652	#define MIN_STAT_INTERVAL 0.1074891	1818	#define MIN_STAT_INTERVAL 0.1074891
1653		1819
		1820	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1821
		1822	#if EV_USE_INOTIFY
		1823	# define EV_INOTIFY_BUFSIZE 8192
		1824
		1825	static void noinline
		1826	infy_add (EV_P_ ev_stat *w)
		1827	{
		1828	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);
		1829
		1830	if (w->wd < 0)
		1831	{
		1832	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1833
		1834	/* monitor some parent directory for speedup hints */
		1835	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
		1836	{
		1837	char path [4096];
		1838	strcpy (path, w->path);
		1839
		1840	do
		1841	{
		1842	int mask = IN_MASK_ADD \| IN_DELETE_SELF \| IN_MOVE_SELF
		1843	\| (errno == EACCES ? IN_ATTRIB : IN_CREATE \| IN_MOVED_TO);
		1844
		1845	char *pend = strrchr (path, '/');
		1846
		1847	if (!pend)
		1848	break; /* whoops, no '/', complain to your admin */
		1849
		1850	*pend = 0;
		1851	w->wd = inotify_add_watch (fs_fd, path, mask);
		1852	}
		1853	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
		1854	}
		1855	}
		1856	else
		1857	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1858
		1859	if (w->wd >= 0)
		1860	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1861	}
		1862
		1863	static void noinline
		1864	infy_del (EV_P_ ev_stat *w)
		1865	{
		1866	int slot;
		1867	int wd = w->wd;
		1868
		1869	if (wd < 0)
		1870	return;
		1871
		1872	w->wd = -2;
		1873	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1874	wlist_del (&fs_hash [slot].head, (WL)w);
		1875
		1876	/* remove this watcher, if others are watching it, they will rearm */
		1877	inotify_rm_watch (fs_fd, wd);
		1878	}
		1879
		1880	static void noinline
		1881	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1882	{
		1883	if (slot < 0)
		1884	/* overflow, need to check for all hahs slots */
		1885	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1886	infy_wd (EV_A_ slot, wd, ev);
		1887	else
		1888	{
		1889	WL w_;
		1890
		1891	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1892	{
		1893	ev_stat w = (ev_stat )w_;
		1894	w_ = w_->next; /* lets us remove this watcher and all before it */
		1895
		1896	if (w->wd == wd \|\| wd == -1)
		1897	{
		1898	if (ev->mask & (IN_IGNORED \| IN_UNMOUNT \| IN_DELETE_SELF))
		1899	{
		1900	w->wd = -1;
		1901	infy_add (EV_A_ w); /* re-add, no matter what */
		1902	}
		1903
		1904	stat_timer_cb (EV_A_ &w->timer, 0);
		1905	}
		1906	}
		1907	}
		1908	}
		1909
		1910	static void
		1911	infy_cb (EV_P_ ev_io *w, int revents)
		1912	{
		1913	char buf [EV_INOTIFY_BUFSIZE];
		1914	struct inotify_event ev = (struct inotify_event )buf;
		1915	int ofs;
		1916	int len = read (fs_fd, buf, sizeof (buf));
		1917
		1918	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1919	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1920	}
		1921
		1922	void inline_size
		1923	infy_init (EV_P)
		1924	{
		1925	if (fs_fd != -2)
		1926	return;
		1927
		1928	fs_fd = inotify_init ();
		1929
		1930	if (fs_fd >= 0)
		1931	{
		1932	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1933	ev_set_priority (&fs_w, EV_MAXPRI);
		1934	ev_io_start (EV_A_ &fs_w);
		1935	}
		1936	}
		1937
		1938	void inline_size
		1939	infy_fork (EV_P)
		1940	{
		1941	int slot;
		1942
		1943	if (fs_fd < 0)
		1944	return;
		1945
		1946	close (fs_fd);
		1947	fs_fd = inotify_init ();
		1948
		1949	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1950	{
		1951	WL w_ = fs_hash [slot].head;
		1952	fs_hash [slot].head = 0;
		1953
		1954	while (w_)
		1955	{
		1956	ev_stat w = (ev_stat )w_;
		1957	w_ = w_->next; /* lets us add this watcher */
		1958
		1959	w->wd = -1;
		1960
		1961	if (fs_fd >= 0)
		1962	infy_add (EV_A_ w); /* re-add, no matter what */
		1963	else
		1964	ev_timer_start (EV_A_ &w->timer);
		1965	}
		1966
		1967	}
		1968	}
		1969
		1970	#endif
		1971
1654	void	1972	void
1655	ev_stat_stat (EV_P_ ev_stat *w)	1973	ev_stat_stat (EV_P_ ev_stat *w)
1656	{	1974	{
1657	if (lstat (w->path, &w->attr) < 0)	1975	if (lstat (w->path, &w->attr) < 0)
1658	w->attr.st_nlink = 0;	1976	w->attr.st_nlink = 0;
1659	else if (!w->attr.st_nlink)	1977	else if (!w->attr.st_nlink)
1660	w->attr.st_nlink = 1;	1978	w->attr.st_nlink = 1;
1661	}	1979	}
1662		1980
1663	static void	1981	static void noinline
1664	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	1982	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1665	{	1983	{
1666	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));	1984	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
1667		1985
1668	/* we copy this here each the time so that */	1986	/* we copy this here each the time so that */
1669	/* prev has the old value when the callback gets invoked */	1987	/* prev has the old value when the callback gets invoked */
1670	w->prev = w->attr;	1988	w->prev = w->attr;
1671	ev_stat_stat (EV_A_ w);	1989	ev_stat_stat (EV_A_ w);
1672		1990
1673	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))	1991	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1992	if (
		1993	w->prev.st_dev != w->attr.st_dev
		1994	\|\| w->prev.st_ino != w->attr.st_ino
		1995	\|\| w->prev.st_mode != w->attr.st_mode
		1996	\|\| w->prev.st_nlink != w->attr.st_nlink
		1997	\|\| w->prev.st_uid != w->attr.st_uid
		1998	\|\| w->prev.st_gid != w->attr.st_gid
		1999	\|\| w->prev.st_rdev != w->attr.st_rdev
		2000	\|\| w->prev.st_size != w->attr.st_size
		2001	\|\| w->prev.st_atime != w->attr.st_atime
		2002	\|\| w->prev.st_mtime != w->attr.st_mtime
		2003	\|\| w->prev.st_ctime != w->attr.st_ctime
		2004	) {
		2005	#if EV_USE_INOTIFY
		2006	infy_del (EV_A_ w);
		2007	infy_add (EV_A_ w);
		2008	ev_stat_stat (EV_A_ w); /* avoid race... */
		2009	#endif
		2010
1674	ev_feed_event (EV_A_ w, EV_STAT);	2011	ev_feed_event (EV_A_ w, EV_STAT);
		2012	}
1675	}	2013	}
1676		2014
1677	void	2015	void
1678	ev_stat_start (EV_P_ ev_stat *w)	2016	ev_stat_start (EV_P_ ev_stat *w)
1679	{	2017	{
…		…
1689	if (w->interval < MIN_STAT_INTERVAL)	2027	if (w->interval < MIN_STAT_INTERVAL)
1690	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;	2028	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1691		2029
1692	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2030	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1693	ev_set_priority (&w->timer, ev_priority (w));	2031	ev_set_priority (&w->timer, ev_priority (w));
		2032
		2033	#if EV_USE_INOTIFY
		2034	infy_init (EV_A);
		2035
		2036	if (fs_fd >= 0)
		2037	infy_add (EV_A_ w);
		2038	else
		2039	#endif
1694	ev_timer_start (EV_A_ &w->timer);	2040	ev_timer_start (EV_A_ &w->timer);
1695		2041
1696	ev_start (EV_A_ (W)w, 1);	2042	ev_start (EV_A_ (W)w, 1);
1697	}	2043	}
1698		2044
1699	void	2045	void
1700	ev_stat_stop (EV_P_ ev_stat *w)	2046	ev_stat_stop (EV_P_ ev_stat *w)
1701	{	2047	{
1702	ev_clear_pending (EV_A_ (W)w);	2048	clear_pending (EV_A_ (W)w);
1703	if (expect_false (!ev_is_active (w)))	2049	if (expect_false (!ev_is_active (w)))
1704	return;	2050	return;
1705		2051
		2052	#if EV_USE_INOTIFY
		2053	infy_del (EV_A_ w);
		2054	#endif
1706	ev_timer_stop (EV_A_ &w->timer);	2055	ev_timer_stop (EV_A_ &w->timer);
1707		2056
1708	ev_stop (EV_A_ (W)w);	2057	ev_stop (EV_A_ (W)w);
1709	}	2058	}
1710	#endif	2059	#endif
1711		2060
		2061	#if EV_IDLE_ENABLE
1712	void	2062	void
1713	ev_idle_start (EV_P_ ev_idle *w)	2063	ev_idle_start (EV_P_ ev_idle *w)
1714	{	2064	{
1715	if (expect_false (ev_is_active (w)))	2065	if (expect_false (ev_is_active (w)))
1716	return;	2066	return;
1717		2067
		2068	pri_adjust (EV_A_ (W)w);
		2069
		2070	{
		2071	int active = ++idlecnt [ABSPRI (w)];
		2072
		2073	++idleall;
1718	ev_start (EV_A_ (W)w, ++idlecnt);	2074	ev_start (EV_A_ (W)w, active);
		2075
1719	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);	2076	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1720	idles [idlecnt - 1] = w;	2077	idles [ABSPRI (w)][active - 1] = w;
		2078	}
1721	}	2079	}
1722		2080
1723	void	2081	void
1724	ev_idle_stop (EV_P_ ev_idle *w)	2082	ev_idle_stop (EV_P_ ev_idle *w)
1725	{	2083	{
1726	ev_clear_pending (EV_A_ (W)w);	2084	clear_pending (EV_A_ (W)w);
1727	if (expect_false (!ev_is_active (w)))	2085	if (expect_false (!ev_is_active (w)))
1728	return;	2086	return;
1729		2087
1730	{	2088	{
1731	int active = ((W)w)->active;	2089	int active = ((W)w)->active;
1732	idles [active - 1] = idles [--idlecnt];	2090
		2091	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
1733	((W)idles [active - 1])->active = active;	2092	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2093
		2094	ev_stop (EV_A_ (W)w);
		2095	--idleall;
1734	}	2096	}
1735
1736	ev_stop (EV_A_ (W)w);
1737	}	2097	}
		2098	#endif
1738		2099
1739	void	2100	void
1740	ev_prepare_start (EV_P_ ev_prepare *w)	2101	ev_prepare_start (EV_P_ ev_prepare *w)
1741	{	2102	{
1742	if (expect_false (ev_is_active (w)))	2103	if (expect_false (ev_is_active (w)))
…		…
1748	}	2109	}
1749		2110
1750	void	2111	void
1751	ev_prepare_stop (EV_P_ ev_prepare *w)	2112	ev_prepare_stop (EV_P_ ev_prepare *w)
1752	{	2113	{
1753	ev_clear_pending (EV_A_ (W)w);	2114	clear_pending (EV_A_ (W)w);
1754	if (expect_false (!ev_is_active (w)))	2115	if (expect_false (!ev_is_active (w)))
1755	return;	2116	return;
1756		2117
1757	{	2118	{
1758	int active = ((W)w)->active;	2119	int active = ((W)w)->active;
…		…
1775	}	2136	}
1776		2137
1777	void	2138	void
1778	ev_check_stop (EV_P_ ev_check *w)	2139	ev_check_stop (EV_P_ ev_check *w)
1779	{	2140	{
1780	ev_clear_pending (EV_A_ (W)w);	2141	clear_pending (EV_A_ (W)w);
1781	if (expect_false (!ev_is_active (w)))	2142	if (expect_false (!ev_is_active (w)))
1782	return;	2143	return;
1783		2144
1784	{	2145	{
1785	int active = ((W)w)->active;	2146	int active = ((W)w)->active;
…		…
1827	}	2188	}
1828		2189
1829	void	2190	void
1830	ev_embed_stop (EV_P_ ev_embed *w)	2191	ev_embed_stop (EV_P_ ev_embed *w)
1831	{	2192	{
1832	ev_clear_pending (EV_A_ (W)w);	2193	clear_pending (EV_A_ (W)w);
1833	if (expect_false (!ev_is_active (w)))	2194	if (expect_false (!ev_is_active (w)))
1834	return;	2195	return;
1835		2196
1836	ev_io_stop (EV_A_ &w->io);	2197	ev_io_stop (EV_A_ &w->io);
1837		2198
…		…
1852	}	2213	}
1853		2214
1854	void	2215	void
1855	ev_fork_stop (EV_P_ ev_fork *w)	2216	ev_fork_stop (EV_P_ ev_fork *w)
1856	{	2217	{
1857	ev_clear_pending (EV_A_ (W)w);	2218	clear_pending (EV_A_ (W)w);
1858	if (expect_false (!ev_is_active (w)))	2219	if (expect_false (!ev_is_active (w)))
1859	return;	2220	return;
1860		2221
1861	{	2222	{
1862	int active = ((W)w)->active;	2223	int active = ((W)w)->active;

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Comparing libev/ev.c (file contents): Revision 1.148 by root, Tue Nov 27 11:11:13 2007 UTC vs. Revision 1.173 by root, Sun Dec 9 19:42:57 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.148 by root, Tue Nov 27 11:11:13 2007 UTC vs.
Revision 1.173 by root, Sun Dec 9 19:42:57 2007 UTC