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

Comparing libev/ev.c (file contents):
Revision 1.151 by root, Tue Nov 27 19:59:08 2007 UTC vs.
Revision 1.176 by root, Tue Dec 11 04:31:55 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
161	#ifndef EV_PID_HASHSIZE	179	#ifndef EV_PID_HASHSIZE
162	# if EV_MINIMAL	180	# if EV_MINIMAL
163	# define EV_PID_HASHSIZE 1	181	# define EV_PID_HASHSIZE 1
164	# else	182	# else
165	# define EV_PID_HASHSIZE 16	183	# define EV_PID_HASHSIZE 16
166	# endif	184	# endif
167	#endif	185	#endif
168		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
169	/**/	195	/**/
170		196
171	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
172	# undef EV_USE_MONOTONIC	198	# undef EV_USE_MONOTONIC
173	# define EV_USE_MONOTONIC 0	199	# define EV_USE_MONOTONIC 0
…		…
180		206
181	#if EV_SELECT_IS_WINSOCKET	207	#if EV_SELECT_IS_WINSOCKET
182	# include <winsock.h>	208	# include <winsock.h>
183	#endif	209	#endif
184		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
185	/**/	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	* and intervals up to 20 years.
		228	* Better solutions welcome.
		229	*/
		230	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
186		231
187	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	232	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
188	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	233	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
189	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */	234	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds, TODO */
190
191	#ifdef EV_H
192	# include EV_H
193	#else
194	# include "ev.h"
195	#endif
196		235
197	#if __GNUC__ >= 3	236	#if __GNUC__ >= 3
198	# define expect(expr,value) __builtin_expect ((expr),(value))	237	# define expect(expr,value) __builtin_expect ((expr),(value))
199	# define inline_size static inline /* inline for codesize */
200	# if EV_MINIMAL
201	# define noinline __attribute__ ((noinline))	238	# define noinline __attribute__ ((noinline))
202	# define inline_speed static noinline
203	# else
204	# define noinline
205	# define inline_speed static inline
206	# endif
207	#else	239	#else
208	# define expect(expr,value) (expr)	240	# define expect(expr,value) (expr)
209	# define inline_speed static
210	# define inline_size static
211	# define noinline	241	# define noinline
		242	# if __STDC_VERSION__ < 199901L
		243	# define inline
		244	# endif
212	#endif	245	#endif
213		246
214	#define expect_false(expr) expect ((expr) != 0, 0)	247	#define expect_false(expr) expect ((expr) != 0, 0)
215	#define expect_true(expr) expect ((expr) != 0, 1)	248	#define expect_true(expr) expect ((expr) != 0, 1)
		249	#define inline_size static inline
		250
		251	#if EV_MINIMAL
		252	# define inline_speed static noinline
		253	#else
		254	# define inline_speed static inline
		255	#endif
216		256
217	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	257	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
218	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	258	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
219		259
220	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	260	#define EMPTY /* required for microsofts broken pseudo-c compiler */
221	#define EMPTY2(a,b) /* used to suppress some warnings */	261	#define EMPTY2(a,b) /* used to suppress some warnings */
222		262
223	typedef ev_watcher *W;	263	typedef ev_watcher *W;
224	typedef ev_watcher_list *WL;	264	typedef ev_watcher_list *WL;
225	typedef ev_watcher_time *WT;	265	typedef ev_watcher_time *WT;
…		…
253	perror (msg);	293	perror (msg);
254	abort ();	294	abort ();
255	}	295	}
256	}	296	}
257		297
258	static void (alloc)(void *ptr, size_t size) = realloc;	298	static void (alloc)(void *ptr, long size);
259		299
260	void	300	void
261	ev_set_allocator (void (cb)(void *ptr, size_t size))	301	ev_set_allocator (void (cb)(void *ptr, long size))
262	{	302	{
263	alloc = cb;	303	alloc = cb;
264	}	304	}
265		305
266	inline_speed void *	306	inline_speed void *
267	ev_realloc (void *ptr, size_t size)	307	ev_realloc (void *ptr, long size)
268	{	308	{
269	ptr = alloc (ptr, size);	309	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
270		310
271	if (!ptr && size)	311	if (!ptr && size)
272	{	312	{
273	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", (long)size);	313	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
274	abort ();	314	abort ();
275	}	315	}
276		316
277	return ptr;	317	return ptr;
278	}	318	}
…		…
295	typedef struct	335	typedef struct
296	{	336	{
297	W w;	337	W w;
298	int events;	338	int events;
299	} ANPENDING;	339	} ANPENDING;
		340
		341	#if EV_USE_INOTIFY
		342	typedef struct
		343	{
		344	WL head;
		345	} ANFS;
		346	#endif
300		347
301	#if EV_MULTIPLICITY	348	#if EV_MULTIPLICITY
302		349
303	struct ev_loop	350	struct ev_loop
304	{	351	{
…		…
361	{	408	{
362	return ev_rt_now;	409	return ev_rt_now;
363	}	410	}
364	#endif	411	#endif
365		412
366	#define array_roundsize(type,n) (((n) \| 4) & ~3)	413	int inline_size
		414	array_nextsize (int elem, int cur, int cnt)
		415	{
		416	int ncur = cur + 1;
		417
		418	do
		419	ncur <<= 1;
		420	while (cnt > ncur);
		421
		422	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		423	if (elem * ncur > 4096)
		424	{
		425	ncur *= elem;
		426	ncur = (ncur + elem + 4095 + sizeof (void ) 4) & ~4095;
		427	ncur = ncur - sizeof (void ) 4;
		428	ncur /= elem;
		429	}
		430
		431	return ncur;
		432	}
		433
		434	static noinline void *
		435	array_realloc (int elem, void base, int cur, int cnt)
		436	{
		437	cur = array_nextsize (elem, cur, cnt);
		438	return ev_realloc (base, elem * *cur);
		439	}
367		440
368	#define array_needsize(type,base,cur,cnt,init) \	441	#define array_needsize(type,base,cur,cnt,init) \
369	if (expect_false ((cnt) > cur)) \	442	if (expect_false ((cnt) > (cur))) \
370	{ \	443	{ \
371	int newcnt = cur; \	444	int ocur_ = (cur); \
372	do \	445	(base) = (type *)array_realloc \
373	{ \	446	(sizeof (type), (base), &(cur), (cnt)); \
374	newcnt = array_roundsize (type, newcnt << 1); \	447	init ((base) + (ocur_), (cur) - ocur_); \
375	} \
376	while ((cnt) > newcnt); \
377	\
378	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
379	init (base + cur, newcnt - cur); \
380	cur = newcnt; \
381	}	448	}
382		449
		450	#if 0
383	#define array_slim(type,stem) \	451	#define array_slim(type,stem) \
384	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	452	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
385	{ \	453	{ \
386	stem ## max = array_roundsize (stem ## cnt >> 1); \	454	stem ## max = array_roundsize (stem ## cnt >> 1); \
387	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\	455	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
388	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	456	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
389	}	457	}
		458	#endif
390		459
391	#define array_free(stem, idx) \	460	#define array_free(stem, idx) \
392	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	461	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
393		462
394	/*****************************************************************************/	463	/*****************************************************************************/
395		464
396	void noinline	465	void noinline
397	ev_feed_event (EV_P_ void *w, int revents)	466	ev_feed_event (EV_P_ void *w, int revents)
398	{	467	{
399	W w_ = (W)w;	468	W w_ = (W)w;
		469	int pri = ABSPRI (w_);
400		470
401	if (expect_false (w_->pending))	471	if (expect_false (w_->pending))
		472	pendings [pri][w_->pending - 1].events \|= revents;
		473	else
402	{	474	{
		475	w_->pending = ++pendingcnt [pri];
		476	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		477	pendings [pri][w_->pending - 1].w = w_;
403	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;	478	pendings [pri][w_->pending - 1].events = revents;
404	return;
405	}	479	}
406
407	w_->pending = ++pendingcnt [ABSPRI (w_)];
408	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
409	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
410	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
411	}	480	}
412		481
413	void inline_size	482	void inline_size
414	queue_events (EV_P_ W *events, int eventcnt, int type)	483	queue_events (EV_P_ W *events, int eventcnt, int type)
415	{	484	{
…		…
450	}	519	}
451		520
452	void	521	void
453	ev_feed_fd_event (EV_P_ int fd, int revents)	522	ev_feed_fd_event (EV_P_ int fd, int revents)
454	{	523	{
		524	if (fd >= 0 && fd < anfdmax)
455	fd_event (EV_A_ fd, revents);	525	fd_event (EV_A_ fd, revents);
456	}	526	}
457		527
458	void inline_size	528	void inline_size
459	fd_reify (EV_P)	529	fd_reify (EV_P)
460	{	530	{
…		…
554	static void noinline	624	static void noinline
555	fd_rearm_all (EV_P)	625	fd_rearm_all (EV_P)
556	{	626	{
557	int fd;	627	int fd;
558		628
559	/* this should be highly optimised to not do anything but set a flag */
560	for (fd = 0; fd < anfdmax; ++fd)	629	for (fd = 0; fd < anfdmax; ++fd)
561	if (anfds [fd].events)	630	if (anfds [fd].events)
562	{	631	{
563	anfds [fd].events = 0;	632	anfds [fd].events = 0;
564	fd_change (EV_A_ fd);	633	fd_change (EV_A_ fd);
…		…
691	for (signum = signalmax; signum--; )	760	for (signum = signalmax; signum--; )
692	if (signals [signum].gotsig)	761	if (signals [signum].gotsig)
693	ev_feed_signal_event (EV_A_ signum + 1);	762	ev_feed_signal_event (EV_A_ signum + 1);
694	}	763	}
695		764
696	void inline_size	765	void inline_speed
697	fd_intern (int fd)	766	fd_intern (int fd)
698	{	767	{
699	#ifdef _WIN32	768	#ifdef _WIN32
700	int arg = 1;	769	int arg = 1;
701	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	770	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
730	ev_child *w;	799	ev_child *w;
731		800
732	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	801	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
733	if (w->pid == pid \|\| !w->pid)	802	if (w->pid == pid \|\| !w->pid)
734	{	803	{
735	ev_priority (w) = ev_priority (sw); /* need to do it now */	804	ev_set_priority (w, ev_priority (sw)); /* need to do it now */
736	w->rpid = pid;	805	w->rpid = pid;
737	w->rstatus = status;	806	w->rstatus = status;
738	ev_feed_event (EV_A_ (W)w, EV_CHILD);	807	ev_feed_event (EV_A_ (W)w, EV_CHILD);
739	}	808	}
740	}	809	}
741		810
742	#ifndef WCONTINUED	811	#ifndef WCONTINUED
…		…
852	ev_backend (EV_P)	921	ev_backend (EV_P)
853	{	922	{
854	return backend;	923	return backend;
855	}	924	}
856		925
		926	unsigned int
		927	ev_loop_count (EV_P)
		928	{
		929	return loop_count;
		930	}
		931
857	static void noinline	932	static void noinline
858	loop_init (EV_P_ unsigned int flags)	933	loop_init (EV_P_ unsigned int flags)
859	{	934	{
860	if (!backend)	935	if (!backend)
861	{	936	{
…		…
870	ev_rt_now = ev_time ();	945	ev_rt_now = ev_time ();
871	mn_now = get_clock ();	946	mn_now = get_clock ();
872	now_floor = mn_now;	947	now_floor = mn_now;
873	rtmn_diff = ev_rt_now - mn_now;	948	rtmn_diff = ev_rt_now - mn_now;
874		949
		950	/* pid check not overridable via env */
		951	#ifndef _WIN32
		952	if (flags & EVFLAG_FORKCHECK)
		953	curpid = getpid ();
		954	#endif
		955
875	if (!(flags & EVFLAG_NOENV)	956	if (!(flags & EVFLAG_NOENV)
876	&& !enable_secure ()	957	&& !enable_secure ()
877	&& getenv ("LIBEV_FLAGS"))	958	&& getenv ("LIBEV_FLAGS"))
878	flags = atoi (getenv ("LIBEV_FLAGS"));	959	flags = atoi (getenv ("LIBEV_FLAGS"));
879		960
880	if (!(flags & 0x0000ffffUL))	961	if (!(flags & 0x0000ffffUL))
881	flags \|= ev_recommended_backends ();	962	flags \|= ev_recommended_backends ();
882		963
883	backend = 0;	964	backend = 0;
		965	backend_fd = -1;
		966	#if EV_USE_INOTIFY
		967	fs_fd = -2;
		968	#endif
		969
884	#if EV_USE_PORT	970	#if EV_USE_PORT
885	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	971	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
886	#endif	972	#endif
887	#if EV_USE_KQUEUE	973	#if EV_USE_KQUEUE
888	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	974	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
905	static void noinline	991	static void noinline
906	loop_destroy (EV_P)	992	loop_destroy (EV_P)
907	{	993	{
908	int i;	994	int i;
909		995
		996	#if EV_USE_INOTIFY
		997	if (fs_fd >= 0)
		998	close (fs_fd);
		999	#endif
		1000
		1001	if (backend_fd >= 0)
		1002	close (backend_fd);
		1003
910	#if EV_USE_PORT	1004	#if EV_USE_PORT
911	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1005	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
912	#endif	1006	#endif
913	#if EV_USE_KQUEUE	1007	#if EV_USE_KQUEUE
914	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);	1008	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
…		…
922	#if EV_USE_SELECT	1016	#if EV_USE_SELECT
923	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1017	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
924	#endif	1018	#endif
925		1019
926	for (i = NUMPRI; i--; )	1020	for (i = NUMPRI; i--; )
		1021	{
927	array_free (pending, [i]);	1022	array_free (pending, [i]);
		1023	#if EV_IDLE_ENABLE
		1024	array_free (idle, [i]);
		1025	#endif
		1026	}
928		1027
929	/* have to use the microsoft-never-gets-it-right macro */	1028	/* have to use the microsoft-never-gets-it-right macro */
930	array_free (fdchange, EMPTY0);	1029	array_free (fdchange, EMPTY);
931	array_free (timer, EMPTY0);	1030	array_free (timer, EMPTY);
932	#if EV_PERIODIC_ENABLE	1031	#if EV_PERIODIC_ENABLE
933	array_free (periodic, EMPTY0);	1032	array_free (periodic, EMPTY);
934	#endif	1033	#endif
935	array_free (idle, EMPTY0);
936	array_free (prepare, EMPTY0);	1034	array_free (prepare, EMPTY);
937	array_free (check, EMPTY0);	1035	array_free (check, EMPTY);
938		1036
939	backend = 0;	1037	backend = 0;
940	}	1038	}
		1039
		1040	void inline_size infy_fork (EV_P);
941		1041
942	void inline_size	1042	void inline_size
943	loop_fork (EV_P)	1043	loop_fork (EV_P)
944	{	1044	{
945	#if EV_USE_PORT	1045	#if EV_USE_PORT
…		…
948	#if EV_USE_KQUEUE	1048	#if EV_USE_KQUEUE
949	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1049	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
950	#endif	1050	#endif
951	#if EV_USE_EPOLL	1051	#if EV_USE_EPOLL
952	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1052	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1053	#endif
		1054	#if EV_USE_INOTIFY
		1055	infy_fork (EV_A);
953	#endif	1056	#endif
954		1057
955	if (ev_is_active (&sigev))	1058	if (ev_is_active (&sigev))
956	{	1059	{
957	/* default loop */	1060	/* default loop */
…		…
1073	postfork = 1;	1176	postfork = 1;
1074	}	1177	}
1075		1178
1076	/*****************************************************************************/	1179	/*****************************************************************************/
1077		1180
1078	int inline_size	1181	void
1079	any_pending (EV_P)	1182	ev_invoke (EV_P_ void *w, int revents)
1080	{	1183	{
1081	int pri;	1184	EV_CB_INVOKE ((W)w, revents);
1082
1083	for (pri = NUMPRI; pri--; )
1084	if (pendingcnt [pri])
1085	return 1;
1086
1087	return 0;
1088	}	1185	}
1089		1186
1090	void inline_speed	1187	void inline_speed
1091	call_pending (EV_P)	1188	call_pending (EV_P)
1092	{	1189	{
…		…
1145	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/	1242	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1146		1243
1147	/* first reschedule or stop timer */	1244	/* first reschedule or stop timer */
1148	if (w->reschedule_cb)	1245	if (w->reschedule_cb)
1149	{	1246	{
1150	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1247	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1151	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1248	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1152	downheap ((WT *)periodics, periodiccnt, 0);	1249	downheap ((WT *)periodics, periodiccnt, 0);
1153	}	1250	}
1154	else if (w->interval)	1251	else if (w->interval)
1155	{	1252	{
1156	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1253	((WT)w)->at = w->offset + floor ((ev_rt_now + TIME_EPSILON - w->offset) / w->interval + 1.) * w->interval;
1157	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));
1158	downheap ((WT *)periodics, periodiccnt, 0);	1255	downheap ((WT *)periodics, periodiccnt, 0);
1159	}	1256	}
1160	else	1257	else
1161	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1258	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
…		…
1175	ev_periodic *w = periodics [i];	1272	ev_periodic *w = periodics [i];
1176		1273
1177	if (w->reschedule_cb)	1274	if (w->reschedule_cb)
1178	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1275	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1179	else if (w->interval)	1276	else if (w->interval)
1180	((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;
1181	}	1278	}
1182		1279
1183	/* now rebuild the heap */	1280	/* now rebuild the heap */
1184	for (i = periodiccnt >> 1; i--; )	1281	for (i = periodiccnt >> 1; i--; )
1185	downheap ((WT *)periodics, periodiccnt, i);	1282	downheap ((WT *)periodics, periodiccnt, i);
1186	}	1283	}
1187	#endif	1284	#endif
1188		1285
		1286	#if EV_IDLE_ENABLE
		1287	void inline_size
		1288	idle_reify (EV_P)
		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
1189	int inline_size	1309	int inline_size
1190	time_update_monotonic (EV_P)	1310	time_update_monotonic (EV_P)
1191	{	1311	{
1192	mn_now = get_clock ();	1312	mn_now = get_clock ();
1193		1313
…		…
1217	ev_tstamp odiff = rtmn_diff;	1337	ev_tstamp odiff = rtmn_diff;
1218		1338
1219	/* loop a few times, before making important decisions.	1339	/* loop a few times, before making important decisions.
1220	* on the choice of "4": one iteration isn't enough,	1340	* on the choice of "4": one iteration isn't enough,
1221	* in case we get preempted during the calls to	1341	* in case we get preempted during the calls to
1222	* ev_time and get_clock. a second call is almost guarenteed	1342	* ev_time and get_clock. a second call is almost guaranteed
1223	* to succeed in that case, though. and looping a few more times	1343	* to succeed in that case, though. and looping a few more times
1224	* doesn't hurt either as we only do this on time-jumps or	1344	* doesn't hurt either as we only do this on time-jumps or
1225	* in the unlikely event of getting preempted here.	1345	* in the unlikely event of having been preempted here.
1226	*/	1346	*/
1227	for (i = 4; --i; )	1347	for (i = 4; --i; )
1228	{	1348	{
1229	rtmn_diff = ev_rt_now - mn_now;	1349	rtmn_diff = ev_rt_now - mn_now;
1230		1350
…		…
1252	{	1372	{
1253	#if EV_PERIODIC_ENABLE	1373	#if EV_PERIODIC_ENABLE
1254	periodics_reschedule (EV_A);	1374	periodics_reschedule (EV_A);
1255	#endif	1375	#endif
1256		1376
1257	/* adjust timers. this is easy, as the offset is the same for all */	1377	/* adjust timers. this is easy, as the offset is the same for all of them */
1258	for (i = 0; i < timercnt; ++i)	1378	for (i = 0; i < timercnt; ++i)
1259	((WT)timers [i])->at += ev_rt_now - mn_now;	1379	((WT)timers [i])->at += ev_rt_now - mn_now;
1260	}	1380	}
1261		1381
1262	mn_now = ev_rt_now;	1382	mn_now = ev_rt_now;
…		…
1282	{	1402	{
1283	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)	1403	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
1284	? EVUNLOOP_ONE	1404	? EVUNLOOP_ONE
1285	: EVUNLOOP_CANCEL;	1405	: EVUNLOOP_CANCEL;
1286		1406
1287	while (activecnt)	1407	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1408
		1409	do
1288	{	1410	{
1289	/* we might have forked, so reify kernel state if necessary */	1411	#ifndef _WIN32
		1412	if (expect_false (curpid)) /* penalise the forking check even more */
		1413	if (expect_false (getpid () != curpid))
		1414	{
		1415	curpid = getpid ();
		1416	postfork = 1;
		1417	}
		1418	#endif
		1419
1290	#if EV_FORK_ENABLE	1420	#if EV_FORK_ENABLE
		1421	/* we might have forked, so queue fork handlers */
1291	if (expect_false (postfork))	1422	if (expect_false (postfork))
1292	if (forkcnt)	1423	if (forkcnt)
1293	{	1424	{
1294	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	1425	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1295	call_pending (EV_A);	1426	call_pending (EV_A);
1296	}	1427	}
1297	#endif	1428	#endif
1298		1429
1299	/* queue check watchers (and execute them) */	1430	/* queue prepare watchers (and execute them) */
1300	if (expect_false (preparecnt))	1431	if (expect_false (preparecnt))
1301	{	1432	{
1302	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1433	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1303	call_pending (EV_A);	1434	call_pending (EV_A);
1304	}	1435	}
1305		1436
		1437	if (expect_false (!activecnt))
		1438	break;
		1439
1306	/* we might have forked, so reify kernel state if necessary */	1440	/* we might have forked, so reify kernel state if necessary */
1307	if (expect_false (postfork))	1441	if (expect_false (postfork))
1308	loop_fork (EV_A);	1442	loop_fork (EV_A);
1309		1443
1310	/* update fd-related kernel structures */	1444	/* update fd-related kernel structures */
1311	fd_reify (EV_A);	1445	fd_reify (EV_A);
1312		1446
1313	/* calculate blocking time */	1447	/* calculate blocking time */
1314	{	1448	{
1315	double block;	1449	ev_tstamp block;
1316		1450
1317	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1451	if (expect_false (flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt))
1318	block = 0.; /* do not block at all */	1452	block = 0.; /* do not block at all */
1319	else	1453	else
1320	{	1454	{
1321	/* update time to cancel out callback processing overhead */	1455	/* update time to cancel out callback processing overhead */
1322	#if EV_USE_MONOTONIC	1456	#if EV_USE_MONOTONIC
…		…
1346	#endif	1480	#endif
1347		1481
1348	if (expect_false (block < 0.)) block = 0.;	1482	if (expect_false (block < 0.)) block = 0.;
1349	}	1483	}
1350		1484
		1485	++loop_count;
1351	backend_poll (EV_A_ block);	1486	backend_poll (EV_A_ block);
1352	}	1487	}
1353		1488
1354	/* update ev_rt_now, do magic */	1489	/* update ev_rt_now, do magic */
1355	time_update (EV_A);	1490	time_update (EV_A);
…		…
1358	timers_reify (EV_A); /* relative timers called last */	1493	timers_reify (EV_A); /* relative timers called last */
1359	#if EV_PERIODIC_ENABLE	1494	#if EV_PERIODIC_ENABLE
1360	periodics_reify (EV_A); /* absolute timers called first */	1495	periodics_reify (EV_A); /* absolute timers called first */
1361	#endif	1496	#endif
1362		1497
		1498	#if EV_IDLE_ENABLE
1363	/* queue idle watchers unless other events are pending */	1499	/* queue idle watchers unless other events are pending */
1364	if (idlecnt && !any_pending (EV_A))	1500	idle_reify (EV_A);
1365	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1501	#endif
1366		1502
1367	/* queue check watchers, to be executed first */	1503	/* queue check watchers, to be executed first */
1368	if (expect_false (checkcnt))	1504	if (expect_false (checkcnt))
1369	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1505	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1370		1506
1371	call_pending (EV_A);	1507	call_pending (EV_A);
1372		1508
1373	if (expect_false (loop_done))
1374	break;
1375	}	1509	}
		1510	while (expect_true (activecnt && !loop_done));
1376		1511
1377	if (loop_done == EVUNLOOP_ONE)	1512	if (loop_done == EVUNLOOP_ONE)
1378	loop_done = EVUNLOOP_CANCEL;	1513	loop_done = EVUNLOOP_CANCEL;
1379	}	1514	}
1380		1515
…		…
1407	head = &(*head)->next;	1542	head = &(*head)->next;
1408	}	1543	}
1409	}	1544	}
1410		1545
1411	void inline_speed	1546	void inline_speed
1412	ev_clear_pending (EV_P_ W w)	1547	clear_pending (EV_P_ W w)
1413	{	1548	{
1414	if (w->pending)	1549	if (w->pending)
1415	{	1550	{
1416	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1551	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1417	w->pending = 0;	1552	w->pending = 0;
1418	}	1553	}
1419	}	1554	}
1420		1555
		1556	int
		1557	ev_clear_pending (EV_P_ void *w)
		1558	{
		1559	W w_ = (W)w;
		1560	int pending = w_->pending;
		1561
		1562	if (expect_true (pending))
		1563	{
		1564	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1565	w_->pending = 0;
		1566	p->w = 0;
		1567	return p->events;
		1568	}
		1569	else
		1570	return 0;
		1571	}
		1572
		1573	void inline_size
		1574	pri_adjust (EV_P_ W w)
		1575	{
		1576	int pri = w->priority;
		1577	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1578	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1579	w->priority = pri;
		1580	}
		1581
1421	void inline_speed	1582	void inline_speed
1422	ev_start (EV_P_ W w, int active)	1583	ev_start (EV_P_ W w, int active)
1423	{	1584	{
1424	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1585	pri_adjust (EV_A_ w);
1425	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1426
1427	w->active = active;	1586	w->active = active;
1428	ev_ref (EV_A);	1587	ev_ref (EV_A);
1429	}	1588	}
1430		1589
1431	void inline_size	1590	void inline_size
…		…
1435	w->active = 0;	1594	w->active = 0;
1436	}	1595	}
1437		1596
1438	/*****************************************************************************/	1597	/*****************************************************************************/
1439		1598
1440	void	1599	void noinline
1441	ev_io_start (EV_P_ ev_io *w)	1600	ev_io_start (EV_P_ ev_io *w)
1442	{	1601	{
1443	int fd = w->fd;	1602	int fd = w->fd;
1444		1603
1445	if (expect_false (ev_is_active (w)))	1604	if (expect_false (ev_is_active (w)))
…		…
1452	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1611	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1453		1612
1454	fd_change (EV_A_ fd);	1613	fd_change (EV_A_ fd);
1455	}	1614	}
1456		1615
1457	void	1616	void noinline
1458	ev_io_stop (EV_P_ ev_io *w)	1617	ev_io_stop (EV_P_ ev_io *w)
1459	{	1618	{
1460	ev_clear_pending (EV_A_ (W)w);	1619	clear_pending (EV_A_ (W)w);
1461	if (expect_false (!ev_is_active (w)))	1620	if (expect_false (!ev_is_active (w)))
1462	return;	1621	return;
1463		1622
1464	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1623	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1465		1624
…		…
1467	ev_stop (EV_A_ (W)w);	1626	ev_stop (EV_A_ (W)w);
1468		1627
1469	fd_change (EV_A_ w->fd);	1628	fd_change (EV_A_ w->fd);
1470	}	1629	}
1471		1630
1472	void	1631	void noinline
1473	ev_timer_start (EV_P_ ev_timer *w)	1632	ev_timer_start (EV_P_ ev_timer *w)
1474	{	1633	{
1475	if (expect_false (ev_is_active (w)))	1634	if (expect_false (ev_is_active (w)))
1476	return;	1635	return;
1477		1636
…		…
1485	upheap ((WT *)timers, timercnt - 1);	1644	upheap ((WT *)timers, timercnt - 1);
1486		1645
1487	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/	1646	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
1488	}	1647	}
1489		1648
1490	void	1649	void noinline
1491	ev_timer_stop (EV_P_ ev_timer *w)	1650	ev_timer_stop (EV_P_ ev_timer *w)
1492	{	1651	{
1493	ev_clear_pending (EV_A_ (W)w);	1652	clear_pending (EV_A_ (W)w);
1494	if (expect_false (!ev_is_active (w)))	1653	if (expect_false (!ev_is_active (w)))
1495	return;	1654	return;
1496		1655
1497	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1656	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1498		1657
…		…
1509	((WT)w)->at -= mn_now;	1668	((WT)w)->at -= mn_now;
1510		1669
1511	ev_stop (EV_A_ (W)w);	1670	ev_stop (EV_A_ (W)w);
1512	}	1671	}
1513		1672
1514	void	1673	void noinline
1515	ev_timer_again (EV_P_ ev_timer *w)	1674	ev_timer_again (EV_P_ ev_timer *w)
1516	{	1675	{
1517	if (ev_is_active (w))	1676	if (ev_is_active (w))
1518	{	1677	{
1519	if (w->repeat)	1678	if (w->repeat)
…		…
1530	ev_timer_start (EV_A_ w);	1689	ev_timer_start (EV_A_ w);
1531	}	1690	}
1532	}	1691	}
1533		1692
1534	#if EV_PERIODIC_ENABLE	1693	#if EV_PERIODIC_ENABLE
1535	void	1694	void noinline
1536	ev_periodic_start (EV_P_ ev_periodic *w)	1695	ev_periodic_start (EV_P_ ev_periodic *w)
1537	{	1696	{
1538	if (expect_false (ev_is_active (w)))	1697	if (expect_false (ev_is_active (w)))
1539	return;	1698	return;
1540		1699
…		…
1542	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1701	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1543	else if (w->interval)	1702	else if (w->interval)
1544	{	1703	{
1545	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1704	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1546	/* this formula differs from the one in periodic_reify because we do not always round up */	1705	/* this formula differs from the one in periodic_reify because we do not always round up */
1547	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1706	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1548	}	1707	}
		1708	else
		1709	((WT)w)->at = w->offset;
1549		1710
1550	ev_start (EV_A_ (W)w, ++periodiccnt);	1711	ev_start (EV_A_ (W)w, ++periodiccnt);
1551	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1712	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1552	periodics [periodiccnt - 1] = w;	1713	periodics [periodiccnt - 1] = w;
1553	upheap ((WT *)periodics, periodiccnt - 1);	1714	upheap ((WT *)periodics, periodiccnt - 1);
1554		1715
1555	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/	1716	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
1556	}	1717	}
1557		1718
1558	void	1719	void noinline
1559	ev_periodic_stop (EV_P_ ev_periodic *w)	1720	ev_periodic_stop (EV_P_ ev_periodic *w)
1560	{	1721	{
1561	ev_clear_pending (EV_A_ (W)w);	1722	clear_pending (EV_A_ (W)w);
1562	if (expect_false (!ev_is_active (w)))	1723	if (expect_false (!ev_is_active (w)))
1563	return;	1724	return;
1564		1725
1565	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1726	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1566		1727
…		…
1575	}	1736	}
1576		1737
1577	ev_stop (EV_A_ (W)w);	1738	ev_stop (EV_A_ (W)w);
1578	}	1739	}
1579		1740
1580	void	1741	void noinline
1581	ev_periodic_again (EV_P_ ev_periodic *w)	1742	ev_periodic_again (EV_P_ ev_periodic *w)
1582	{	1743	{
1583	/* TODO: use adjustheap and recalculation */	1744	/* TODO: use adjustheap and recalculation */
1584	ev_periodic_stop (EV_A_ w);	1745	ev_periodic_stop (EV_A_ w);
1585	ev_periodic_start (EV_A_ w);	1746	ev_periodic_start (EV_A_ w);
…		…
1588		1749
1589	#ifndef SA_RESTART	1750	#ifndef SA_RESTART
1590	# define SA_RESTART 0	1751	# define SA_RESTART 0
1591	#endif	1752	#endif
1592		1753
1593	void	1754	void noinline
1594	ev_signal_start (EV_P_ ev_signal *w)	1755	ev_signal_start (EV_P_ ev_signal *w)
1595	{	1756	{
1596	#if EV_MULTIPLICITY	1757	#if EV_MULTIPLICITY
1597	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1758	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1598	#endif	1759	#endif
…		…
1617	sigaction (w->signum, &sa, 0);	1778	sigaction (w->signum, &sa, 0);
1618	#endif	1779	#endif
1619	}	1780	}
1620	}	1781	}
1621		1782
1622	void	1783	void noinline
1623	ev_signal_stop (EV_P_ ev_signal *w)	1784	ev_signal_stop (EV_P_ ev_signal *w)
1624	{	1785	{
1625	ev_clear_pending (EV_A_ (W)w);	1786	clear_pending (EV_A_ (W)w);
1626	if (expect_false (!ev_is_active (w)))	1787	if (expect_false (!ev_is_active (w)))
1627	return;	1788	return;
1628		1789
1629	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1790	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1630	ev_stop (EV_A_ (W)w);	1791	ev_stop (EV_A_ (W)w);
…		…
1647	}	1808	}
1648		1809
1649	void	1810	void
1650	ev_child_stop (EV_P_ ev_child *w)	1811	ev_child_stop (EV_P_ ev_child *w)
1651	{	1812	{
1652	ev_clear_pending (EV_A_ (W)w);	1813	clear_pending (EV_A_ (W)w);
1653	if (expect_false (!ev_is_active (w)))	1814	if (expect_false (!ev_is_active (w)))
1654	return;	1815	return;
1655		1816
1656	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1817	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1657	ev_stop (EV_A_ (W)w);	1818	ev_stop (EV_A_ (W)w);
…		…
1665	# endif	1826	# endif
1666		1827
1667	#define DEF_STAT_INTERVAL 5.0074891	1828	#define DEF_STAT_INTERVAL 5.0074891
1668	#define MIN_STAT_INTERVAL 0.1074891	1829	#define MIN_STAT_INTERVAL 0.1074891
1669		1830
		1831	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1832
		1833	#if EV_USE_INOTIFY
		1834	# define EV_INOTIFY_BUFSIZE 8192
		1835
		1836	static void noinline
		1837	infy_add (EV_P_ ev_stat *w)
		1838	{
		1839	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);
		1840
		1841	if (w->wd < 0)
		1842	{
		1843	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1844
		1845	/* monitor some parent directory for speedup hints */
		1846	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
		1847	{
		1848	char path [4096];
		1849	strcpy (path, w->path);
		1850
		1851	do
		1852	{
		1853	int mask = IN_MASK_ADD \| IN_DELETE_SELF \| IN_MOVE_SELF
		1854	\| (errno == EACCES ? IN_ATTRIB : IN_CREATE \| IN_MOVED_TO);
		1855
		1856	char *pend = strrchr (path, '/');
		1857
		1858	if (!pend)
		1859	break; /* whoops, no '/', complain to your admin */
		1860
		1861	*pend = 0;
		1862	w->wd = inotify_add_watch (fs_fd, path, mask);
		1863	}
		1864	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
		1865	}
		1866	}
		1867	else
		1868	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1869
		1870	if (w->wd >= 0)
		1871	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1872	}
		1873
		1874	static void noinline
		1875	infy_del (EV_P_ ev_stat *w)
		1876	{
		1877	int slot;
		1878	int wd = w->wd;
		1879
		1880	if (wd < 0)
		1881	return;
		1882
		1883	w->wd = -2;
		1884	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1885	wlist_del (&fs_hash [slot].head, (WL)w);
		1886
		1887	/* remove this watcher, if others are watching it, they will rearm */
		1888	inotify_rm_watch (fs_fd, wd);
		1889	}
		1890
		1891	static void noinline
		1892	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1893	{
		1894	if (slot < 0)
		1895	/* overflow, need to check for all hahs slots */
		1896	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1897	infy_wd (EV_A_ slot, wd, ev);
		1898	else
		1899	{
		1900	WL w_;
		1901
		1902	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1903	{
		1904	ev_stat w = (ev_stat )w_;
		1905	w_ = w_->next; /* lets us remove this watcher and all before it */
		1906
		1907	if (w->wd == wd \|\| wd == -1)
		1908	{
		1909	if (ev->mask & (IN_IGNORED \| IN_UNMOUNT \| IN_DELETE_SELF))
		1910	{
		1911	w->wd = -1;
		1912	infy_add (EV_A_ w); /* re-add, no matter what */
		1913	}
		1914
		1915	stat_timer_cb (EV_A_ &w->timer, 0);
		1916	}
		1917	}
		1918	}
		1919	}
		1920
		1921	static void
		1922	infy_cb (EV_P_ ev_io *w, int revents)
		1923	{
		1924	char buf [EV_INOTIFY_BUFSIZE];
		1925	struct inotify_event ev = (struct inotify_event )buf;
		1926	int ofs;
		1927	int len = read (fs_fd, buf, sizeof (buf));
		1928
		1929	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1930	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1931	}
		1932
		1933	void inline_size
		1934	infy_init (EV_P)
		1935	{
		1936	if (fs_fd != -2)
		1937	return;
		1938
		1939	fs_fd = inotify_init ();
		1940
		1941	if (fs_fd >= 0)
		1942	{
		1943	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1944	ev_set_priority (&fs_w, EV_MAXPRI);
		1945	ev_io_start (EV_A_ &fs_w);
		1946	}
		1947	}
		1948
		1949	void inline_size
		1950	infy_fork (EV_P)
		1951	{
		1952	int slot;
		1953
		1954	if (fs_fd < 0)
		1955	return;
		1956
		1957	close (fs_fd);
		1958	fs_fd = inotify_init ();
		1959
		1960	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1961	{
		1962	WL w_ = fs_hash [slot].head;
		1963	fs_hash [slot].head = 0;
		1964
		1965	while (w_)
		1966	{
		1967	ev_stat w = (ev_stat )w_;
		1968	w_ = w_->next; /* lets us add this watcher */
		1969
		1970	w->wd = -1;
		1971
		1972	if (fs_fd >= 0)
		1973	infy_add (EV_A_ w); /* re-add, no matter what */
		1974	else
		1975	ev_timer_start (EV_A_ &w->timer);
		1976	}
		1977
		1978	}
		1979	}
		1980
		1981	#endif
		1982
1670	void	1983	void
1671	ev_stat_stat (EV_P_ ev_stat *w)	1984	ev_stat_stat (EV_P_ ev_stat *w)
1672	{	1985	{
1673	if (lstat (w->path, &w->attr) < 0)	1986	if (lstat (w->path, &w->attr) < 0)
1674	w->attr.st_nlink = 0;	1987	w->attr.st_nlink = 0;
1675	else if (!w->attr.st_nlink)	1988	else if (!w->attr.st_nlink)
1676	w->attr.st_nlink = 1;	1989	w->attr.st_nlink = 1;
1677	}	1990	}
1678		1991
1679	static void	1992	static void noinline
1680	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	1993	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1681	{	1994	{
1682	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));	1995	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
1683		1996
1684	/* we copy this here each the time so that */	1997	/* we copy this here each the time so that */
1685	/* prev has the old value when the callback gets invoked */	1998	/* prev has the old value when the callback gets invoked */
1686	w->prev = w->attr;	1999	w->prev = w->attr;
1687	ev_stat_stat (EV_A_ w);	2000	ev_stat_stat (EV_A_ w);
1688		2001
1689	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))	2002	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2003	if (
		2004	w->prev.st_dev != w->attr.st_dev
		2005	\|\| w->prev.st_ino != w->attr.st_ino
		2006	\|\| w->prev.st_mode != w->attr.st_mode
		2007	\|\| w->prev.st_nlink != w->attr.st_nlink
		2008	\|\| w->prev.st_uid != w->attr.st_uid
		2009	\|\| w->prev.st_gid != w->attr.st_gid
		2010	\|\| w->prev.st_rdev != w->attr.st_rdev
		2011	\|\| w->prev.st_size != w->attr.st_size
		2012	\|\| w->prev.st_atime != w->attr.st_atime
		2013	\|\| w->prev.st_mtime != w->attr.st_mtime
		2014	\|\| w->prev.st_ctime != w->attr.st_ctime
		2015	) {
		2016	#if EV_USE_INOTIFY
		2017	infy_del (EV_A_ w);
		2018	infy_add (EV_A_ w);
		2019	ev_stat_stat (EV_A_ w); /* avoid race... */
		2020	#endif
		2021
1690	ev_feed_event (EV_A_ w, EV_STAT);	2022	ev_feed_event (EV_A_ w, EV_STAT);
		2023	}
1691	}	2024	}
1692		2025
1693	void	2026	void
1694	ev_stat_start (EV_P_ ev_stat *w)	2027	ev_stat_start (EV_P_ ev_stat *w)
1695	{	2028	{
…		…
1705	if (w->interval < MIN_STAT_INTERVAL)	2038	if (w->interval < MIN_STAT_INTERVAL)
1706	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;	2039	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1707		2040
1708	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2041	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1709	ev_set_priority (&w->timer, ev_priority (w));	2042	ev_set_priority (&w->timer, ev_priority (w));
		2043
		2044	#if EV_USE_INOTIFY
		2045	infy_init (EV_A);
		2046
		2047	if (fs_fd >= 0)
		2048	infy_add (EV_A_ w);
		2049	else
		2050	#endif
1710	ev_timer_start (EV_A_ &w->timer);	2051	ev_timer_start (EV_A_ &w->timer);
1711		2052
1712	ev_start (EV_A_ (W)w, 1);	2053	ev_start (EV_A_ (W)w, 1);
1713	}	2054	}
1714		2055
1715	void	2056	void
1716	ev_stat_stop (EV_P_ ev_stat *w)	2057	ev_stat_stop (EV_P_ ev_stat *w)
1717	{	2058	{
1718	ev_clear_pending (EV_A_ (W)w);	2059	clear_pending (EV_A_ (W)w);
1719	if (expect_false (!ev_is_active (w)))	2060	if (expect_false (!ev_is_active (w)))
1720	return;	2061	return;
1721		2062
		2063	#if EV_USE_INOTIFY
		2064	infy_del (EV_A_ w);
		2065	#endif
1722	ev_timer_stop (EV_A_ &w->timer);	2066	ev_timer_stop (EV_A_ &w->timer);
1723		2067
1724	ev_stop (EV_A_ (W)w);	2068	ev_stop (EV_A_ (W)w);
1725	}	2069	}
1726	#endif	2070	#endif
1727		2071
		2072	#if EV_IDLE_ENABLE
1728	void	2073	void
1729	ev_idle_start (EV_P_ ev_idle *w)	2074	ev_idle_start (EV_P_ ev_idle *w)
1730	{	2075	{
1731	if (expect_false (ev_is_active (w)))	2076	if (expect_false (ev_is_active (w)))
1732	return;	2077	return;
1733		2078
		2079	pri_adjust (EV_A_ (W)w);
		2080
		2081	{
		2082	int active = ++idlecnt [ABSPRI (w)];
		2083
		2084	++idleall;
1734	ev_start (EV_A_ (W)w, ++idlecnt);	2085	ev_start (EV_A_ (W)w, active);
		2086
1735	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);	2087	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1736	idles [idlecnt - 1] = w;	2088	idles [ABSPRI (w)][active - 1] = w;
		2089	}
1737	}	2090	}
1738		2091
1739	void	2092	void
1740	ev_idle_stop (EV_P_ ev_idle *w)	2093	ev_idle_stop (EV_P_ ev_idle *w)
1741	{	2094	{
1742	ev_clear_pending (EV_A_ (W)w);	2095	clear_pending (EV_A_ (W)w);
1743	if (expect_false (!ev_is_active (w)))	2096	if (expect_false (!ev_is_active (w)))
1744	return;	2097	return;
1745		2098
1746	{	2099	{
1747	int active = ((W)w)->active;	2100	int active = ((W)w)->active;
1748	idles [active - 1] = idles [--idlecnt];	2101
		2102	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
1749	((W)idles [active - 1])->active = active;	2103	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2104
		2105	ev_stop (EV_A_ (W)w);
		2106	--idleall;
1750	}	2107	}
1751
1752	ev_stop (EV_A_ (W)w);
1753	}	2108	}
		2109	#endif
1754		2110
1755	void	2111	void
1756	ev_prepare_start (EV_P_ ev_prepare *w)	2112	ev_prepare_start (EV_P_ ev_prepare *w)
1757	{	2113	{
1758	if (expect_false (ev_is_active (w)))	2114	if (expect_false (ev_is_active (w)))
…		…
1764	}	2120	}
1765		2121
1766	void	2122	void
1767	ev_prepare_stop (EV_P_ ev_prepare *w)	2123	ev_prepare_stop (EV_P_ ev_prepare *w)
1768	{	2124	{
1769	ev_clear_pending (EV_A_ (W)w);	2125	clear_pending (EV_A_ (W)w);
1770	if (expect_false (!ev_is_active (w)))	2126	if (expect_false (!ev_is_active (w)))
1771	return;	2127	return;
1772		2128
1773	{	2129	{
1774	int active = ((W)w)->active;	2130	int active = ((W)w)->active;
…		…
1791	}	2147	}
1792		2148
1793	void	2149	void
1794	ev_check_stop (EV_P_ ev_check *w)	2150	ev_check_stop (EV_P_ ev_check *w)
1795	{	2151	{
1796	ev_clear_pending (EV_A_ (W)w);	2152	clear_pending (EV_A_ (W)w);
1797	if (expect_false (!ev_is_active (w)))	2153	if (expect_false (!ev_is_active (w)))
1798	return;	2154	return;
1799		2155
1800	{	2156	{
1801	int active = ((W)w)->active;	2157	int active = ((W)w)->active;
…		…
1843	}	2199	}
1844		2200
1845	void	2201	void
1846	ev_embed_stop (EV_P_ ev_embed *w)	2202	ev_embed_stop (EV_P_ ev_embed *w)
1847	{	2203	{
1848	ev_clear_pending (EV_A_ (W)w);	2204	clear_pending (EV_A_ (W)w);
1849	if (expect_false (!ev_is_active (w)))	2205	if (expect_false (!ev_is_active (w)))
1850	return;	2206	return;
1851		2207
1852	ev_io_stop (EV_A_ &w->io);	2208	ev_io_stop (EV_A_ &w->io);
1853		2209
…		…
1868	}	2224	}
1869		2225
1870	void	2226	void
1871	ev_fork_stop (EV_P_ ev_fork *w)	2227	ev_fork_stop (EV_P_ ev_fork *w)
1872	{	2228	{
1873	ev_clear_pending (EV_A_ (W)w);	2229	clear_pending (EV_A_ (W)w);
1874	if (expect_false (!ev_is_active (w)))	2230	if (expect_false (!ev_is_active (w)))
1875	return;	2231	return;
1876		2232
1877	{	2233	{
1878	int active = ((W)w)->active;	2234	int active = ((W)w)->active;

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Comparing libev/ev.c (file contents): Revision 1.151 by root, Tue Nov 27 19:59:08 2007 UTC vs. Revision 1.176 by root, Tue Dec 11 04:31:55 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.151 by root, Tue Nov 27 19:59:08 2007 UTC vs.
Revision 1.176 by root, Tue Dec 11 04:31:55 2007 UTC