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

Comparing libev/ev.c (file contents):
Revision 1.149 by root, Tue Nov 27 19:23:31 2007 UTC vs.
Revision 1.199 by root, Tue Dec 25 07:05:45 2007 UTC

…		…
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* modification, are permitted provided that the following conditions are	8	* tion, are permitted provided that the following conditions are met:
9	* met:	9	*
		10	* 1. Redistributions of source code must retain the above copyright notice,
		11	* this list of conditions and the following disclaimer.
		12	*
		13	* 2. Redistributions in binary form must reproduce the above copyright
		14	* notice, this list of conditions and the following disclaimer in the
		15	* documentation and/or other materials provided with the distribution.
		16	*
		17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
		18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
		19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
		20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
		21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
		22	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
		23	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
		24	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
		25	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
		26	* OF THE POSSIBILITY OF SUCH DAMAGE.
10	*	27	*
11	* * Redistributions of source code must retain the above copyright	28	* Alternatively, the contents of this file may be used under the terms of
12	* notice, this list of conditions and the following disclaimer.	29	* the GNU General Public License ("GPL") version 2 or any later version,
13	*	30	* in which case the provisions of the GPL are applicable instead of
14	* * Redistributions in binary form must reproduce the above	31	* the above. If you wish to allow the use of your version of this file
15	* copyright notice, this list of conditions and the following	32	* only under the terms of the GPL and not to allow others to use your
16	* disclaimer in the documentation and/or other materials provided	33	* version of this file under the BSD license, indicate your decision
17	* with the distribution.	34	* by deleting the provisions above and replace them with the notice
18	*	35	* and other provisions required by the GPL. If you do not delete the
19	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS	36	* provisions above, a recipient may use your version of this file under
20	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT	37	* either the BSD or the GPL.
21	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	38	*/
31		39
32	#ifdef __cplusplus	40	#ifdef __cplusplus
33	extern "C" {	41	extern "C" {
34	#endif	42	#endif
…		…
51	# ifndef EV_USE_MONOTONIC	59	# ifndef EV_USE_MONOTONIC
52	# define EV_USE_MONOTONIC 0	60	# define EV_USE_MONOTONIC 0
53	# endif	61	# endif
54	# ifndef EV_USE_REALTIME	62	# ifndef EV_USE_REALTIME
55	# define EV_USE_REALTIME 0	63	# define EV_USE_REALTIME 0
		64	# endif
		65	# endif
		66
		67	# ifndef EV_USE_NANOSLEEP
		68	# if HAVE_NANOSLEEP
		69	# define EV_USE_NANOSLEEP 1
		70	# else
		71	# define EV_USE_NANOSLEEP 0
56	# endif	72	# endif
57	# endif	73	# endif
58		74
59	# ifndef EV_USE_SELECT	75	# ifndef EV_USE_SELECT
60	# if HAVE_SELECT && HAVE_SYS_SELECT_H	76	# if HAVE_SELECT && HAVE_SYS_SELECT_H
…		…
94	# else	110	# else
95	# define EV_USE_PORT 0	111	# define EV_USE_PORT 0
96	# endif	112	# endif
97	# endif	113	# endif
98		114
		115	# ifndef EV_USE_INOTIFY
		116	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		117	# define EV_USE_INOTIFY 1
		118	# else
		119	# define EV_USE_INOTIFY 0
		120	# endif
		121	# endif
		122
99	#endif	123	#endif
100		124
101	#include <math.h>	125	#include <math.h>
102	#include <stdlib.h>	126	#include <stdlib.h>
103	#include <fcntl.h>	127	#include <fcntl.h>
…		…
109	#include <errno.h>	133	#include <errno.h>
110	#include <sys/types.h>	134	#include <sys/types.h>
111	#include <time.h>	135	#include <time.h>
112		136
113	#include <signal.h>	137	#include <signal.h>
		138
		139	#ifdef EV_H
		140	# include EV_H
		141	#else
		142	# include "ev.h"
		143	#endif
114		144
115	#ifndef _WIN32	145	#ifndef _WIN32
116	# include <sys/time.h>	146	# include <sys/time.h>
117	# include <sys/wait.h>	147	# include <sys/wait.h>
118	# include <unistd.h>	148	# include <unistd.h>
…		…
132		162
133	#ifndef EV_USE_REALTIME	163	#ifndef EV_USE_REALTIME
134	# define EV_USE_REALTIME 0	164	# define EV_USE_REALTIME 0
135	#endif	165	#endif
136		166
		167	#ifndef EV_USE_NANOSLEEP
		168	# define EV_USE_NANOSLEEP 0
		169	#endif
		170
137	#ifndef EV_USE_SELECT	171	#ifndef EV_USE_SELECT
138	# define EV_USE_SELECT 1	172	# define EV_USE_SELECT 1
139	#endif	173	#endif
140		174
141	#ifndef EV_USE_POLL	175	#ifndef EV_USE_POLL
…		…
156		190
157	#ifndef EV_USE_PORT	191	#ifndef EV_USE_PORT
158	# define EV_USE_PORT 0	192	# define EV_USE_PORT 0
159	#endif	193	#endif
160		194
		195	#ifndef EV_USE_INOTIFY
		196	# define EV_USE_INOTIFY 0
		197	#endif
		198
161	#ifndef EV_PID_HASHSIZE	199	#ifndef EV_PID_HASHSIZE
162	# if EV_MINIMAL	200	# if EV_MINIMAL
163	# define EV_PID_HASHSIZE 1	201	# define EV_PID_HASHSIZE 1
164	# else	202	# else
165	# define EV_PID_HASHSIZE 16	203	# define EV_PID_HASHSIZE 16
166	# endif	204	# endif
167	#endif	205	#endif
168		206
		207	#ifndef EV_INOTIFY_HASHSIZE
		208	# if EV_MINIMAL
		209	# define EV_INOTIFY_HASHSIZE 1
		210	# else
		211	# define EV_INOTIFY_HASHSIZE 16
		212	# endif
		213	#endif
		214
169	/**/	215	/**/
170		216
171	#ifndef CLOCK_MONOTONIC	217	#ifndef CLOCK_MONOTONIC
172	# undef EV_USE_MONOTONIC	218	# undef EV_USE_MONOTONIC
173	# define EV_USE_MONOTONIC 0	219	# define EV_USE_MONOTONIC 0
…		…
176	#ifndef CLOCK_REALTIME	222	#ifndef CLOCK_REALTIME
177	# undef EV_USE_REALTIME	223	# undef EV_USE_REALTIME
178	# define EV_USE_REALTIME 0	224	# define EV_USE_REALTIME 0
179	#endif	225	#endif
180		226
		227	#if !EV_STAT_ENABLE
		228	# undef EV_USE_INOTIFY
		229	# define EV_USE_INOTIFY 0
		230	#endif
		231
		232	#if !EV_USE_NANOSLEEP
		233	# ifndef _WIN32
		234	# include <sys/select.h>
		235	# endif
		236	#endif
		237
		238	#if EV_USE_INOTIFY
		239	# include <sys/inotify.h>
		240	#endif
		241
181	#if EV_SELECT_IS_WINSOCKET	242	#if EV_SELECT_IS_WINSOCKET
182	# include <winsock.h>	243	# include <winsock.h>
183	#endif	244	#endif
184		245
185	/**/	246	/**/
186		247
		248	/*
		249	* This is used to avoid floating point rounding problems.
		250	* It is added to ev_rt_now when scheduling periodics
		251	* to ensure progress, time-wise, even when rounding
		252	* errors are against us.
		253	* This value is good at least till the year 4000.
		254	* Better solutions welcome.
		255	*/
		256	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
		257
187	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	258	#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) */	259	#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 */	260	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds, TODO */
190		261
191	#ifdef EV_H
192	# include EV_H
193	#else
194	# include "ev.h"
195	#endif
196
197	#if __GNUC__ >= 3	262	#if __GNUC__ >= 4
198	# define expect(expr,value) __builtin_expect ((expr),(value))	263	# 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))	264	# 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	265	#else
208	# define expect(expr,value) (expr)	266	# define expect(expr,value) (expr)
209	# define inline_speed static
210	# define inline_size static
211	# define noinline	267	# define noinline
		268	# if __STDC_VERSION__ < 199901L
		269	# define inline
		270	# endif
212	#endif	271	#endif
213		272
214	#define expect_false(expr) expect ((expr) != 0, 0)	273	#define expect_false(expr) expect ((expr) != 0, 0)
215	#define expect_true(expr) expect ((expr) != 0, 1)	274	#define expect_true(expr) expect ((expr) != 0, 1)
		275	#define inline_size static inline
		276
		277	#if EV_MINIMAL
		278	# define inline_speed static noinline
		279	#else
		280	# define inline_speed static inline
		281	#endif
216		282
217	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	283	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
218	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	284	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
219		285
220	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	286	#define EMPTY /* required for microsofts broken pseudo-c compiler */
221	#define EMPTY2(a,b) /* used to suppress some warnings */	287	#define EMPTY2(a,b) /* used to suppress some warnings */
222		288
223	typedef ev_watcher *W;	289	typedef ev_watcher *W;
224	typedef ev_watcher_list *WL;	290	typedef ev_watcher_list *WL;
225	typedef ev_watcher_time *WT;	291	typedef ev_watcher_time *WT;
226		292
		293	#if EV_USE_MONOTONIC
		294	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		295	/* giving it a reasonably high chance of working on typical architetcures */
227	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	296	static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		297	#endif
228		298
229	#ifdef _WIN32	299	#ifdef _WIN32
230	# include "ev_win32.c"	300	# include "ev_win32.c"
231	#endif	301	#endif
232		302
…		…
261	ev_set_allocator (void (cb)(void *ptr, long size))	331	ev_set_allocator (void (cb)(void *ptr, long size))
262	{	332	{
263	alloc = cb;	333	alloc = cb;
264	}	334	}
265		335
266	static void *	336	inline_speed void *
267	ev_realloc (void *ptr, long size)	337	ev_realloc (void *ptr, long size)
268	{	338	{
269	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	339	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
270		340
271	if (!ptr && size)	341	if (!ptr && size)
…		…
295	typedef struct	365	typedef struct
296	{	366	{
297	W w;	367	W w;
298	int events;	368	int events;
299	} ANPENDING;	369	} ANPENDING;
		370
		371	#if EV_USE_INOTIFY
		372	typedef struct
		373	{
		374	WL head;
		375	} ANFS;
		376	#endif
300		377
301	#if EV_MULTIPLICITY	378	#if EV_MULTIPLICITY
302		379
303	struct ev_loop	380	struct ev_loop
304	{	381	{
…		…
361	{	438	{
362	return ev_rt_now;	439	return ev_rt_now;
363	}	440	}
364	#endif	441	#endif
365		442
366	#define array_roundsize(type,n) (((n) \| 4) & ~3)	443	void
		444	ev_sleep (ev_tstamp delay)
		445	{
		446	if (delay > 0.)
		447	{
		448	#if EV_USE_NANOSLEEP
		449	struct timespec ts;
		450
		451	ts.tv_sec = (time_t)delay;
		452	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		453
		454	nanosleep (&ts, 0);
		455	#elif defined(_WIN32)
		456	Sleep (delay * 1e3);
		457	#else
		458	struct timeval tv;
		459
		460	tv.tv_sec = (time_t)delay;
		461	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		462
		463	select (0, 0, 0, 0, &tv);
		464	#endif
		465	}
		466	}
		467
		468	/*****************************************************************************/
		469
		470	int inline_size
		471	array_nextsize (int elem, int cur, int cnt)
		472	{
		473	int ncur = cur + 1;
		474
		475	do
		476	ncur <<= 1;
		477	while (cnt > ncur);
		478
		479	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		480	if (elem * ncur > 4096)
		481	{
		482	ncur *= elem;
		483	ncur = (ncur + elem + 4095 + sizeof (void ) 4) & ~4095;
		484	ncur = ncur - sizeof (void ) 4;
		485	ncur /= elem;
		486	}
		487
		488	return ncur;
		489	}
		490
		491	static noinline void *
		492	array_realloc (int elem, void base, int cur, int cnt)
		493	{
		494	cur = array_nextsize (elem, cur, cnt);
		495	return ev_realloc (base, elem * *cur);
		496	}
367		497
368	#define array_needsize(type,base,cur,cnt,init) \	498	#define array_needsize(type,base,cur,cnt,init) \
369	if (expect_false ((cnt) > cur)) \	499	if (expect_false ((cnt) > (cur))) \
370	{ \	500	{ \
371	int newcnt = cur; \	501	int ocur_ = (cur); \
372	do \	502	(base) = (type *)array_realloc \
373	{ \	503	(sizeof (type), (base), &(cur), (cnt)); \
374	newcnt = array_roundsize (type, newcnt << 1); \	504	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	}	505	}
382		506
		507	#if 0
383	#define array_slim(type,stem) \	508	#define array_slim(type,stem) \
384	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	509	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
385	{ \	510	{ \
386	stem ## max = array_roundsize (stem ## cnt >> 1); \	511	stem ## max = array_roundsize (stem ## cnt >> 1); \
387	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\	512	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
388	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	513	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
389	}	514	}
		515	#endif
390		516
391	#define array_free(stem, idx) \	517	#define array_free(stem, idx) \
392	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	518	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
393		519
394	/*****************************************************************************/	520	/*****************************************************************************/
395		521
396	void noinline	522	void noinline
397	ev_feed_event (EV_P_ void *w, int revents)	523	ev_feed_event (EV_P_ void *w, int revents)
398	{	524	{
399	W w_ = (W)w;	525	W w_ = (W)w;
		526	int pri = ABSPRI (w_);
400		527
401	if (expect_false (w_->pending))	528	if (expect_false (w_->pending))
		529	pendings [pri][w_->pending - 1].events \|= revents;
		530	else
402	{	531	{
		532	w_->pending = ++pendingcnt [pri];
		533	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		534	pendings [pri][w_->pending - 1].w = w_;
403	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;	535	pendings [pri][w_->pending - 1].events = revents;
404	return;
405	}	536	}
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	}	537	}
412		538
413	void inline_size	539	void inline_speed
414	queue_events (EV_P_ W *events, int eventcnt, int type)	540	queue_events (EV_P_ W *events, int eventcnt, int type)
415	{	541	{
416	int i;	542	int i;
417		543
418	for (i = 0; i < eventcnt; ++i)	544	for (i = 0; i < eventcnt; ++i)
…		…
450	}	576	}
451		577
452	void	578	void
453	ev_feed_fd_event (EV_P_ int fd, int revents)	579	ev_feed_fd_event (EV_P_ int fd, int revents)
454	{	580	{
		581	if (fd >= 0 && fd < anfdmax)
455	fd_event (EV_A_ fd, revents);	582	fd_event (EV_A_ fd, revents);
456	}	583	}
457		584
458	void inline_size	585	void inline_size
459	fd_reify (EV_P)	586	fd_reify (EV_P)
460	{	587	{
…		…
464	{	591	{
465	int fd = fdchanges [i];	592	int fd = fdchanges [i];
466	ANFD *anfd = anfds + fd;	593	ANFD *anfd = anfds + fd;
467	ev_io *w;	594	ev_io *w;
468		595
469	int events = 0;	596	unsigned char events = 0;
470		597
471	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	598	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
472	events \|= w->events;	599	events \|= (unsigned char)w->events;
473		600
474	#if EV_SELECT_IS_WINSOCKET	601	#if EV_SELECT_IS_WINSOCKET
475	if (events)	602	if (events)
476	{	603	{
477	unsigned long argp;	604	unsigned long argp;
478	anfd->handle = _get_osfhandle (fd);	605	anfd->handle = _get_osfhandle (fd);
479	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	606	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
480	}	607	}
481	#endif	608	#endif
482		609
		610	{
		611	unsigned char o_events = anfd->events;
		612	unsigned char o_reify = anfd->reify;
		613
483	anfd->reify = 0;	614	anfd->reify = 0;
484
485	backend_modify (EV_A_ fd, anfd->events, events);
486	anfd->events = events;	615	anfd->events = events;
		616
		617	if (o_events != events \|\| o_reify & EV_IOFDSET)
		618	backend_modify (EV_A_ fd, o_events, events);
		619	}
487	}	620	}
488		621
489	fdchangecnt = 0;	622	fdchangecnt = 0;
490	}	623	}
491		624
492	void inline_size	625	void inline_size
493	fd_change (EV_P_ int fd)	626	fd_change (EV_P_ int fd, int flags)
494	{	627	{
495	if (expect_false (anfds [fd].reify))	628	unsigned char reify = anfds [fd].reify;
496	return;
497
498	anfds [fd].reify = 1;	629	anfds [fd].reify \|= flags;
499		630
		631	if (expect_true (!reify))
		632	{
500	++fdchangecnt;	633	++fdchangecnt;
501	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	634	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
502	fdchanges [fdchangecnt - 1] = fd;	635	fdchanges [fdchangecnt - 1] = fd;
		636	}
503	}	637	}
504		638
505	void inline_speed	639	void inline_speed
506	fd_kill (EV_P_ int fd)	640	fd_kill (EV_P_ int fd)
507	{	641	{
…		…
554	static void noinline	688	static void noinline
555	fd_rearm_all (EV_P)	689	fd_rearm_all (EV_P)
556	{	690	{
557	int fd;	691	int fd;
558		692
559	/* this should be highly optimised to not do anything but set a flag */
560	for (fd = 0; fd < anfdmax; ++fd)	693	for (fd = 0; fd < anfdmax; ++fd)
561	if (anfds [fd].events)	694	if (anfds [fd].events)
562	{	695	{
563	anfds [fd].events = 0;	696	anfds [fd].events = 0;
564	fd_change (EV_A_ fd);	697	fd_change (EV_A_ fd, EV_IOFDSET \| 1);
565	}	698	}
566	}	699	}
567		700
568	/*****************************************************************************/	701	/*****************************************************************************/
569		702
570	void inline_speed	703	void inline_speed
571	upheap (WT *heap, int k)	704	upheap (WT *heap, int k)
572	{	705	{
573	WT w = heap [k];	706	WT w = heap [k];
574		707
575	while (k && heap [k >> 1]->at > w->at)	708	while (k)
576	{	709	{
		710	int p = (k - 1) >> 1;
		711
		712	if (heap [p]->at <= w->at)
		713	break;
		714
577	heap [k] = heap [k >> 1];	715	heap [k] = heap [p];
578	((W)heap [k])->active = k + 1;	716	((W)heap [k])->active = k + 1;
579	k >>= 1;	717	k = p;
580	}	718	}
581		719
582	heap [k] = w;	720	heap [k] = w;
583	((W)heap [k])->active = k + 1;	721	((W)heap [k])->active = k + 1;
584
585	}	722	}
586		723
587	void inline_speed	724	void inline_speed
588	downheap (WT *heap, int N, int k)	725	downheap (WT *heap, int N, int k)
589	{	726	{
590	WT w = heap [k];	727	WT w = heap [k];
591		728
592	while (k < (N >> 1))	729	for (;;)
593	{	730	{
594	int j = k << 1;	731	int c = (k << 1) + 1;
595		732
596	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	733	if (c >= N)
597	++j;
598
599	if (w->at <= heap [j]->at)
600	break;	734	break;
601		735
		736	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		737	? 1 : 0;
		738
		739	if (w->at <= heap [c]->at)
		740	break;
		741
602	heap [k] = heap [j];	742	heap [k] = heap [c];
603	((W)heap [k])->active = k + 1;	743	((W)heap [k])->active = k + 1;
		744
604	k = j;	745	k = c;
605	}	746	}
606		747
607	heap [k] = w;	748	heap [k] = w;
608	((W)heap [k])->active = k + 1;	749	((W)heap [k])->active = k + 1;
609	}	750	}
…		…
691	for (signum = signalmax; signum--; )	832	for (signum = signalmax; signum--; )
692	if (signals [signum].gotsig)	833	if (signals [signum].gotsig)
693	ev_feed_signal_event (EV_A_ signum + 1);	834	ev_feed_signal_event (EV_A_ signum + 1);
694	}	835	}
695		836
696	void inline_size	837	void inline_speed
697	fd_intern (int fd)	838	fd_intern (int fd)
698	{	839	{
699	#ifdef _WIN32	840	#ifdef _WIN32
700	int arg = 1;	841	int arg = 1;
701	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	842	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
716	ev_unref (EV_A); /* child watcher should not keep loop alive */	857	ev_unref (EV_A); /* child watcher should not keep loop alive */
717	}	858	}
718		859
719	/*****************************************************************************/	860	/*****************************************************************************/
720		861
721	static ev_child *childs [EV_PID_HASHSIZE];	862	static WL childs [EV_PID_HASHSIZE];
722		863
723	#ifndef _WIN32	864	#ifndef _WIN32
724		865
725	static ev_signal childev;	866	static ev_signal childev;
726		867
…		…
730	ev_child *w;	871	ev_child *w;
731		872
732	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	873	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
733	if (w->pid == pid \|\| !w->pid)	874	if (w->pid == pid \|\| !w->pid)
734	{	875	{
735	ev_priority (w) = ev_priority (sw); /* need to do it now */	876	ev_set_priority (w, ev_priority (sw)); /* need to do it now */
736	w->rpid = pid;	877	w->rpid = pid;
737	w->rstatus = status;	878	w->rstatus = status;
738	ev_feed_event (EV_A_ (W)w, EV_CHILD);	879	ev_feed_event (EV_A_ (W)w, EV_CHILD);
739	}	880	}
740	}	881	}
741		882
742	#ifndef WCONTINUED	883	#ifndef WCONTINUED
…		…
841	}	982	}
842		983
843	unsigned int	984	unsigned int
844	ev_embeddable_backends (void)	985	ev_embeddable_backends (void)
845	{	986	{
846	return EVBACKEND_EPOLL	987	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
847	\| EVBACKEND_KQUEUE	988
848	\| EVBACKEND_PORT;	989	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		990	/* please fix it and tell me how to detect the fix */
		991	flags &= ~EVBACKEND_EPOLL;
		992
		993	return flags;
849	}	994	}
850		995
851	unsigned int	996	unsigned int
852	ev_backend (EV_P)	997	ev_backend (EV_P)
853	{	998	{
854	return backend;	999	return backend;
855	}	1000	}
856		1001
857	static void	1002	unsigned int
		1003	ev_loop_count (EV_P)
		1004	{
		1005	return loop_count;
		1006	}
		1007
		1008	void
		1009	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1010	{
		1011	io_blocktime = interval;
		1012	}
		1013
		1014	void
		1015	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1016	{
		1017	timeout_blocktime = interval;
		1018	}
		1019
		1020	static void noinline
858	loop_init (EV_P_ unsigned int flags)	1021	loop_init (EV_P_ unsigned int flags)
859	{	1022	{
860	if (!backend)	1023	if (!backend)
861	{	1024	{
862	#if EV_USE_MONOTONIC	1025	#if EV_USE_MONOTONIC
…		…
870	ev_rt_now = ev_time ();	1033	ev_rt_now = ev_time ();
871	mn_now = get_clock ();	1034	mn_now = get_clock ();
872	now_floor = mn_now;	1035	now_floor = mn_now;
873	rtmn_diff = ev_rt_now - mn_now;	1036	rtmn_diff = ev_rt_now - mn_now;
874		1037
		1038	io_blocktime = 0.;
		1039	timeout_blocktime = 0.;
		1040
		1041	/* pid check not overridable via env */
		1042	#ifndef _WIN32
		1043	if (flags & EVFLAG_FORKCHECK)
		1044	curpid = getpid ();
		1045	#endif
		1046
875	if (!(flags & EVFLAG_NOENV)	1047	if (!(flags & EVFLAG_NOENV)
876	&& !enable_secure ()	1048	&& !enable_secure ()
877	&& getenv ("LIBEV_FLAGS"))	1049	&& getenv ("LIBEV_FLAGS"))
878	flags = atoi (getenv ("LIBEV_FLAGS"));	1050	flags = atoi (getenv ("LIBEV_FLAGS"));
879		1051
880	if (!(flags & 0x0000ffffUL))	1052	if (!(flags & 0x0000ffffUL))
881	flags \|= ev_recommended_backends ();	1053	flags \|= ev_recommended_backends ();
882		1054
883	backend = 0;	1055	backend = 0;
		1056	backend_fd = -1;
		1057	#if EV_USE_INOTIFY
		1058	fs_fd = -2;
		1059	#endif
		1060
884	#if EV_USE_PORT	1061	#if EV_USE_PORT
885	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1062	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
886	#endif	1063	#endif
887	#if EV_USE_KQUEUE	1064	#if EV_USE_KQUEUE
888	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1065	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
900	ev_init (&sigev, sigcb);	1077	ev_init (&sigev, sigcb);
901	ev_set_priority (&sigev, EV_MAXPRI);	1078	ev_set_priority (&sigev, EV_MAXPRI);
902	}	1079	}
903	}	1080	}
904		1081
905	static void	1082	static void noinline
906	loop_destroy (EV_P)	1083	loop_destroy (EV_P)
907	{	1084	{
908	int i;	1085	int i;
		1086
		1087	#if EV_USE_INOTIFY
		1088	if (fs_fd >= 0)
		1089	close (fs_fd);
		1090	#endif
		1091
		1092	if (backend_fd >= 0)
		1093	close (backend_fd);
909		1094
910	#if EV_USE_PORT	1095	#if EV_USE_PORT
911	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1096	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
912	#endif	1097	#endif
913	#if EV_USE_KQUEUE	1098	#if EV_USE_KQUEUE
…		…
922	#if EV_USE_SELECT	1107	#if EV_USE_SELECT
923	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1108	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
924	#endif	1109	#endif
925		1110
926	for (i = NUMPRI; i--; )	1111	for (i = NUMPRI; i--; )
		1112	{
927	array_free (pending, [i]);	1113	array_free (pending, [i]);
		1114	#if EV_IDLE_ENABLE
		1115	array_free (idle, [i]);
		1116	#endif
		1117	}
		1118
		1119	ev_free (anfds); anfdmax = 0;
928		1120
929	/* have to use the microsoft-never-gets-it-right macro */	1121	/* have to use the microsoft-never-gets-it-right macro */
930	array_free (fdchange, EMPTY0);	1122	array_free (fdchange, EMPTY);
931	array_free (timer, EMPTY0);	1123	array_free (timer, EMPTY);
932	#if EV_PERIODIC_ENABLE	1124	#if EV_PERIODIC_ENABLE
933	array_free (periodic, EMPTY0);	1125	array_free (periodic, EMPTY);
934	#endif	1126	#endif
		1127	#if EV_FORK_ENABLE
935	array_free (idle, EMPTY0);	1128	array_free (fork, EMPTY);
		1129	#endif
936	array_free (prepare, EMPTY0);	1130	array_free (prepare, EMPTY);
937	array_free (check, EMPTY0);	1131	array_free (check, EMPTY);
938		1132
939	backend = 0;	1133	backend = 0;
940	}	1134	}
941		1135
942	static void	1136	void inline_size infy_fork (EV_P);
		1137
		1138	void inline_size
943	loop_fork (EV_P)	1139	loop_fork (EV_P)
944	{	1140	{
945	#if EV_USE_PORT	1141	#if EV_USE_PORT
946	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1142	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
947	#endif	1143	#endif
948	#if EV_USE_KQUEUE	1144	#if EV_USE_KQUEUE
949	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1145	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
950	#endif	1146	#endif
951	#if EV_USE_EPOLL	1147	#if EV_USE_EPOLL
952	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1148	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1149	#endif
		1150	#if EV_USE_INOTIFY
		1151	infy_fork (EV_A);
953	#endif	1152	#endif
954		1153
955	if (ev_is_active (&sigev))	1154	if (ev_is_active (&sigev))
956	{	1155	{
957	/* default loop */	1156	/* default loop */
…		…
1073	postfork = 1;	1272	postfork = 1;
1074	}	1273	}
1075		1274
1076	/*****************************************************************************/	1275	/*****************************************************************************/
1077		1276
1078	int inline_size	1277	void
1079	any_pending (EV_P)	1278	ev_invoke (EV_P_ void *w, int revents)
1080	{	1279	{
1081	int pri;	1280	EV_CB_INVOKE ((W)w, revents);
1082
1083	for (pri = NUMPRI; pri--; )
1084	if (pendingcnt [pri])
1085	return 1;
1086
1087	return 0;
1088	}	1281	}
1089		1282
1090	void inline_speed	1283	void inline_speed
1091	call_pending (EV_P)	1284	call_pending (EV_P)
1092	{	1285	{
…		…
1097	{	1290	{
1098	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1291	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1099		1292
1100	if (expect_true (p->w))	1293	if (expect_true (p->w))
1101	{	1294	{
1102	assert (("non-pending watcher on pending list", p->w->pending));	1295	/assert (("non-pending watcher on pending list", p->w->pending));/
1103		1296
1104	p->w->pending = 0;	1297	p->w->pending = 0;
1105	EV_CB_INVOKE (p->w, p->events);	1298	EV_CB_INVOKE (p->w, p->events);
1106	}	1299	}
1107	}	1300	}
…		…
1110	void inline_size	1303	void inline_size
1111	timers_reify (EV_P)	1304	timers_reify (EV_P)
1112	{	1305	{
1113	while (timercnt && ((WT)timers [0])->at <= mn_now)	1306	while (timercnt && ((WT)timers [0])->at <= mn_now)
1114	{	1307	{
1115	ev_timer *w = timers [0];	1308	ev_timer w = (ev_timer )timers [0];
1116		1309
1117	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1310	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1118		1311
1119	/* first reschedule or stop timer */	1312	/* first reschedule or stop timer */
1120	if (w->repeat)	1313	if (w->repeat)
1121	{	1314	{
1122	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1315	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1123		1316
1124	((WT)w)->at += w->repeat;	1317	((WT)w)->at += w->repeat;
1125	if (((WT)w)->at < mn_now)	1318	if (((WT)w)->at < mn_now)
1126	((WT)w)->at = mn_now;	1319	((WT)w)->at = mn_now;
1127		1320
1128	downheap ((WT *)timers, timercnt, 0);	1321	downheap (timers, timercnt, 0);
1129	}	1322	}
1130	else	1323	else
1131	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1324	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1132		1325
1133	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1326	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1138	void inline_size	1331	void inline_size
1139	periodics_reify (EV_P)	1332	periodics_reify (EV_P)
1140	{	1333	{
1141	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1334	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1142	{	1335	{
1143	ev_periodic *w = periodics [0];	1336	ev_periodic w = (ev_periodic )periodics [0];
1144		1337
1145	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1338	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1146		1339
1147	/* first reschedule or stop timer */	1340	/* first reschedule or stop timer */
1148	if (w->reschedule_cb)	1341	if (w->reschedule_cb)
1149	{	1342	{
1150	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1343	((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));	1344	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1152	downheap ((WT *)periodics, periodiccnt, 0);	1345	downheap (periodics, periodiccnt, 0);
1153	}	1346	}
1154	else if (w->interval)	1347	else if (w->interval)
1155	{	1348	{
1156	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1349	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1350	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1157	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1351	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);	1352	downheap (periodics, periodiccnt, 0);
1159	}	1353	}
1160	else	1354	else
1161	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1355	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1162		1356
1163	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1357	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1170	int i;	1364	int i;
1171		1365
1172	/* adjust periodics after time jump */	1366	/* adjust periodics after time jump */
1173	for (i = 0; i < periodiccnt; ++i)	1367	for (i = 0; i < periodiccnt; ++i)
1174	{	1368	{
1175	ev_periodic *w = periodics [i];	1369	ev_periodic w = (ev_periodic )periodics [i];
1176		1370
1177	if (w->reschedule_cb)	1371	if (w->reschedule_cb)
1178	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1372	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1179	else if (w->interval)	1373	else if (w->interval)
1180	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1374	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1181	}	1375	}
1182		1376
1183	/* now rebuild the heap */	1377	/* now rebuild the heap */
1184	for (i = periodiccnt >> 1; i--; )	1378	for (i = periodiccnt >> 1; i--; )
1185	downheap ((WT *)periodics, periodiccnt, i);	1379	downheap (periodics, periodiccnt, i);
1186	}	1380	}
1187	#endif	1381	#endif
1188		1382
		1383	#if EV_IDLE_ENABLE
1189	int inline_size	1384	void inline_size
1190	time_update_monotonic (EV_P)	1385	idle_reify (EV_P)
1191	{	1386	{
		1387	if (expect_false (idleall))
		1388	{
		1389	int pri;
		1390
		1391	for (pri = NUMPRI; pri--; )
		1392	{
		1393	if (pendingcnt [pri])
		1394	break;
		1395
		1396	if (idlecnt [pri])
		1397	{
		1398	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1399	break;
		1400	}
		1401	}
		1402	}
		1403	}
		1404	#endif
		1405
		1406	void inline_speed
		1407	time_update (EV_P_ ev_tstamp max_block)
		1408	{
		1409	int i;
		1410
		1411	#if EV_USE_MONOTONIC
		1412	if (expect_true (have_monotonic))
		1413	{
		1414	ev_tstamp odiff = rtmn_diff;
		1415
1192	mn_now = get_clock ();	1416	mn_now = get_clock ();
1193		1417
		1418	/* only fetch the realtime clock every 0.5MIN_TIMEJUMP seconds /
		1419	/* interpolate in the meantime */
1194	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1420	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1195	{	1421	{
1196	ev_rt_now = rtmn_diff + mn_now;	1422	ev_rt_now = rtmn_diff + mn_now;
1197	return 0;	1423	return;
1198	}	1424	}
1199	else	1425
1200	{
1201	now_floor = mn_now;	1426	now_floor = mn_now;
1202	ev_rt_now = ev_time ();	1427	ev_rt_now = ev_time ();
1203	return 1;
1204	}
1205	}
1206		1428
1207	void inline_size	1429	/* loop a few times, before making important decisions.
1208	time_update (EV_P)	1430	* on the choice of "4": one iteration isn't enough,
1209	{	1431	* in case we get preempted during the calls to
1210	int i;	1432	* ev_time and get_clock. a second call is almost guaranteed
1211		1433	* to succeed in that case, though. and looping a few more times
1212	#if EV_USE_MONOTONIC	1434	* doesn't hurt either as we only do this on time-jumps or
1213	if (expect_true (have_monotonic))	1435	* in the unlikely event of having been preempted here.
1214	{	1436	*/
1215	if (time_update_monotonic (EV_A))	1437	for (i = 4; --i; )
1216	{	1438	{
1217	ev_tstamp odiff = rtmn_diff;
1218
1219	/* loop a few times, before making important decisions.
1220	* on the choice of "4": one iteration isn't enough,
1221	* in case we get preempted during the calls to
1222	* ev_time and get_clock. a second call is almost guarenteed
1223	* 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
1225	* in the unlikely event of getting preempted here.
1226	*/
1227	for (i = 4; --i; )
1228	{
1229	rtmn_diff = ev_rt_now - mn_now;	1439	rtmn_diff = ev_rt_now - mn_now;
1230		1440
1231	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1441	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1232	return; /* all is well */	1442	return; /* all is well */
1233		1443
1234	ev_rt_now = ev_time ();	1444	ev_rt_now = ev_time ();
1235	mn_now = get_clock ();	1445	mn_now = get_clock ();
1236	now_floor = mn_now;	1446	now_floor = mn_now;
1237	}	1447	}
1238		1448
1239	# if EV_PERIODIC_ENABLE	1449	# if EV_PERIODIC_ENABLE
1240	periodics_reschedule (EV_A);	1450	periodics_reschedule (EV_A);
1241	# endif	1451	# endif
1242	/* no timer adjustment, as the monotonic clock doesn't jump */	1452	/* no timer adjustment, as the monotonic clock doesn't jump */
1243	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1453	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1244	}
1245	}	1454	}
1246	else	1455	else
1247	#endif	1456	#endif
1248	{	1457	{
1249	ev_rt_now = ev_time ();	1458	ev_rt_now = ev_time ();
1250		1459
1251	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1460	if (expect_false (mn_now > ev_rt_now \|\| ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1252	{	1461	{
1253	#if EV_PERIODIC_ENABLE	1462	#if EV_PERIODIC_ENABLE
1254	periodics_reschedule (EV_A);	1463	periodics_reschedule (EV_A);
1255	#endif	1464	#endif
1256
1257	/* adjust timers. this is easy, as the offset is the same for all */	1465	/* adjust timers. this is easy, as the offset is the same for all of them */
1258	for (i = 0; i < timercnt; ++i)	1466	for (i = 0; i < timercnt; ++i)
1259	((WT)timers [i])->at += ev_rt_now - mn_now;	1467	((WT)timers [i])->at += ev_rt_now - mn_now;
1260	}	1468	}
1261		1469
1262	mn_now = ev_rt_now;	1470	mn_now = ev_rt_now;
…		…
1282	{	1490	{
1283	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)	1491	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
1284	? EVUNLOOP_ONE	1492	? EVUNLOOP_ONE
1285	: EVUNLOOP_CANCEL;	1493	: EVUNLOOP_CANCEL;
1286		1494
1287	while (activecnt)	1495	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1496
		1497	do
1288	{	1498	{
1289	/* we might have forked, so reify kernel state if necessary */	1499	#ifndef _WIN32
		1500	if (expect_false (curpid)) /* penalise the forking check even more */
		1501	if (expect_false (getpid () != curpid))
		1502	{
		1503	curpid = getpid ();
		1504	postfork = 1;
		1505	}
		1506	#endif
		1507
1290	#if EV_FORK_ENABLE	1508	#if EV_FORK_ENABLE
		1509	/* we might have forked, so queue fork handlers */
1291	if (expect_false (postfork))	1510	if (expect_false (postfork))
1292	if (forkcnt)	1511	if (forkcnt)
1293	{	1512	{
1294	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	1513	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1295	call_pending (EV_A);	1514	call_pending (EV_A);
1296	}	1515	}
1297	#endif	1516	#endif
1298		1517
1299	/* queue check watchers (and execute them) */	1518	/* queue prepare watchers (and execute them) */
1300	if (expect_false (preparecnt))	1519	if (expect_false (preparecnt))
1301	{	1520	{
1302	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1521	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1303	call_pending (EV_A);	1522	call_pending (EV_A);
1304	}	1523	}
1305		1524
		1525	if (expect_false (!activecnt))
		1526	break;
		1527
1306	/* we might have forked, so reify kernel state if necessary */	1528	/* we might have forked, so reify kernel state if necessary */
1307	if (expect_false (postfork))	1529	if (expect_false (postfork))
1308	loop_fork (EV_A);	1530	loop_fork (EV_A);
1309		1531
1310	/* update fd-related kernel structures */	1532	/* update fd-related kernel structures */
1311	fd_reify (EV_A);	1533	fd_reify (EV_A);
1312		1534
1313	/* calculate blocking time */	1535	/* calculate blocking time */
1314	{	1536	{
1315	double block;	1537	ev_tstamp waittime = 0.;
		1538	ev_tstamp sleeptime = 0.;
1316		1539
1317	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1540	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1318	block = 0.; /* do not block at all */
1319	else
1320	{	1541	{
1321	/* update time to cancel out callback processing overhead */	1542	/* update time to cancel out callback processing overhead */
1322	#if EV_USE_MONOTONIC
1323	if (expect_true (have_monotonic))
1324	time_update_monotonic (EV_A);	1543	time_update (EV_A_ 1e100);
1325	else
1326	#endif
1327	{
1328	ev_rt_now = ev_time ();
1329	mn_now = ev_rt_now;
1330	}
1331		1544
1332	block = MAX_BLOCKTIME;	1545	waittime = MAX_BLOCKTIME;
1333		1546
1334	if (timercnt)	1547	if (timercnt)
1335	{	1548	{
1336	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1549	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1337	if (block > to) block = to;	1550	if (waittime > to) waittime = to;
1338	}	1551	}
1339		1552
1340	#if EV_PERIODIC_ENABLE	1553	#if EV_PERIODIC_ENABLE
1341	if (periodiccnt)	1554	if (periodiccnt)
1342	{	1555	{
1343	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1556	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1344	if (block > to) block = to;	1557	if (waittime > to) waittime = to;
1345	}	1558	}
1346	#endif	1559	#endif
1347		1560
1348	if (expect_false (block < 0.)) block = 0.;	1561	if (expect_false (waittime < timeout_blocktime))
		1562	waittime = timeout_blocktime;
		1563
		1564	sleeptime = waittime - backend_fudge;
		1565
		1566	if (expect_true (sleeptime > io_blocktime))
		1567	sleeptime = io_blocktime;
		1568
		1569	if (sleeptime)
		1570	{
		1571	ev_sleep (sleeptime);
		1572	waittime -= sleeptime;
		1573	}
1349	}	1574	}
1350		1575
		1576	++loop_count;
1351	backend_poll (EV_A_ block);	1577	backend_poll (EV_A_ waittime);
		1578
		1579	/* update ev_rt_now, do magic */
		1580	time_update (EV_A_ waittime + sleeptime);
1352	}	1581	}
1353
1354	/* update ev_rt_now, do magic */
1355	time_update (EV_A);
1356		1582
1357	/* queue pending timers and reschedule them */	1583	/* queue pending timers and reschedule them */
1358	timers_reify (EV_A); /* relative timers called last */	1584	timers_reify (EV_A); /* relative timers called last */
1359	#if EV_PERIODIC_ENABLE	1585	#if EV_PERIODIC_ENABLE
1360	periodics_reify (EV_A); /* absolute timers called first */	1586	periodics_reify (EV_A); /* absolute timers called first */
1361	#endif	1587	#endif
1362		1588
		1589	#if EV_IDLE_ENABLE
1363	/* queue idle watchers unless other events are pending */	1590	/* queue idle watchers unless other events are pending */
1364	if (idlecnt && !any_pending (EV_A))	1591	idle_reify (EV_A);
1365	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1592	#endif
1366		1593
1367	/* queue check watchers, to be executed first */	1594	/* queue check watchers, to be executed first */
1368	if (expect_false (checkcnt))	1595	if (expect_false (checkcnt))
1369	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1596	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1370		1597
1371	call_pending (EV_A);	1598	call_pending (EV_A);
1372		1599
1373	if (expect_false (loop_done))
1374	break;
1375	}	1600	}
		1601	while (expect_true (activecnt && !loop_done));
1376		1602
1377	if (loop_done == EVUNLOOP_ONE)	1603	if (loop_done == EVUNLOOP_ONE)
1378	loop_done = EVUNLOOP_CANCEL;	1604	loop_done = EVUNLOOP_CANCEL;
1379	}	1605	}
1380		1606
…		…
1407	head = &(*head)->next;	1633	head = &(*head)->next;
1408	}	1634	}
1409	}	1635	}
1410		1636
1411	void inline_speed	1637	void inline_speed
1412	ev_clear_pending (EV_P_ W w)	1638	clear_pending (EV_P_ W w)
1413	{	1639	{
1414	if (w->pending)	1640	if (w->pending)
1415	{	1641	{
1416	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1642	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1417	w->pending = 0;	1643	w->pending = 0;
1418	}	1644	}
1419	}	1645	}
1420		1646
		1647	int
		1648	ev_clear_pending (EV_P_ void *w)
		1649	{
		1650	W w_ = (W)w;
		1651	int pending = w_->pending;
		1652
		1653	if (expect_true (pending))
		1654	{
		1655	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1656	w_->pending = 0;
		1657	p->w = 0;
		1658	return p->events;
		1659	}
		1660	else
		1661	return 0;
		1662	}
		1663
		1664	void inline_size
		1665	pri_adjust (EV_P_ W w)
		1666	{
		1667	int pri = w->priority;
		1668	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1669	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1670	w->priority = pri;
		1671	}
		1672
1421	void inline_speed	1673	void inline_speed
1422	ev_start (EV_P_ W w, int active)	1674	ev_start (EV_P_ W w, int active)
1423	{	1675	{
1424	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1676	pri_adjust (EV_A_ w);
1425	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1426
1427	w->active = active;	1677	w->active = active;
1428	ev_ref (EV_A);	1678	ev_ref (EV_A);
1429	}	1679	}
1430		1680
1431	void inline_size	1681	void inline_size
…		…
1435	w->active = 0;	1685	w->active = 0;
1436	}	1686	}
1437		1687
1438	/*****************************************************************************/	1688	/*****************************************************************************/
1439		1689
1440	void	1690	void noinline
1441	ev_io_start (EV_P_ ev_io *w)	1691	ev_io_start (EV_P_ ev_io *w)
1442	{	1692	{
1443	int fd = w->fd;	1693	int fd = w->fd;
1444		1694
1445	if (expect_false (ev_is_active (w)))	1695	if (expect_false (ev_is_active (w)))
…		…
1447		1697
1448	assert (("ev_io_start called with negative fd", fd >= 0));	1698	assert (("ev_io_start called with negative fd", fd >= 0));
1449		1699
1450	ev_start (EV_A_ (W)w, 1);	1700	ev_start (EV_A_ (W)w, 1);
1451	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1701	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1452	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1702	wlist_add (&anfds[fd].head, (WL)w);
1453		1703
1454	fd_change (EV_A_ fd);	1704	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);
		1705	w->events &= ~EV_IOFDSET;
1455	}	1706	}
1456		1707
1457	void	1708	void noinline
1458	ev_io_stop (EV_P_ ev_io *w)	1709	ev_io_stop (EV_P_ ev_io *w)
1459	{	1710	{
1460	ev_clear_pending (EV_A_ (W)w);	1711	clear_pending (EV_A_ (W)w);
1461	if (expect_false (!ev_is_active (w)))	1712	if (expect_false (!ev_is_active (w)))
1462	return;	1713	return;
1463		1714
1464	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1715	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1465		1716
1466	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1717	wlist_del (&anfds[w->fd].head, (WL)w);
1467	ev_stop (EV_A_ (W)w);	1718	ev_stop (EV_A_ (W)w);
1468		1719
1469	fd_change (EV_A_ w->fd);	1720	fd_change (EV_A_ w->fd, 1);
1470	}	1721	}
1471		1722
1472	void	1723	void noinline
1473	ev_timer_start (EV_P_ ev_timer *w)	1724	ev_timer_start (EV_P_ ev_timer *w)
1474	{	1725	{
1475	if (expect_false (ev_is_active (w)))	1726	if (expect_false (ev_is_active (w)))
1476	return;	1727	return;
1477		1728
1478	((WT)w)->at += mn_now;	1729	((WT)w)->at += mn_now;
1479		1730
1480	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1731	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1481		1732
1482	ev_start (EV_A_ (W)w, ++timercnt);	1733	ev_start (EV_A_ (W)w, ++timercnt);
1483	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1734	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1484	timers [timercnt - 1] = w;	1735	timers [timercnt - 1] = (WT)w;
1485	upheap ((WT *)timers, timercnt - 1);	1736	upheap (timers, timercnt - 1);
1486		1737
1487	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1738	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
1488	}	1739	}
1489		1740
1490	void	1741	void noinline
1491	ev_timer_stop (EV_P_ ev_timer *w)	1742	ev_timer_stop (EV_P_ ev_timer *w)
1492	{	1743	{
1493	ev_clear_pending (EV_A_ (W)w);	1744	clear_pending (EV_A_ (W)w);
1494	if (expect_false (!ev_is_active (w)))	1745	if (expect_false (!ev_is_active (w)))
1495	return;	1746	return;
1496		1747
1497	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1748	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1498		1749
		1750	{
		1751	int active = ((W)w)->active;
		1752
1499	if (expect_true (((W)w)->active < timercnt--))	1753	if (expect_true (--active < --timercnt))
1500	{	1754	{
1501	timers [((W)w)->active - 1] = timers [timercnt];	1755	timers [active] = timers [timercnt];
1502	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1756	adjustheap (timers, timercnt, active);
1503	}	1757	}
		1758	}
1504		1759
1505	((WT)w)->at -= mn_now;	1760	((WT)w)->at -= mn_now;
1506		1761
1507	ev_stop (EV_A_ (W)w);	1762	ev_stop (EV_A_ (W)w);
1508	}	1763	}
1509		1764
1510	void	1765	void noinline
1511	ev_timer_again (EV_P_ ev_timer *w)	1766	ev_timer_again (EV_P_ ev_timer *w)
1512	{	1767	{
1513	if (ev_is_active (w))	1768	if (ev_is_active (w))
1514	{	1769	{
1515	if (w->repeat)	1770	if (w->repeat)
1516	{	1771	{
1517	((WT)w)->at = mn_now + w->repeat;	1772	((WT)w)->at = mn_now + w->repeat;
1518	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1773	adjustheap (timers, timercnt, ((W)w)->active - 1);
1519	}	1774	}
1520	else	1775	else
1521	ev_timer_stop (EV_A_ w);	1776	ev_timer_stop (EV_A_ w);
1522	}	1777	}
1523	else if (w->repeat)	1778	else if (w->repeat)
…		…
1526	ev_timer_start (EV_A_ w);	1781	ev_timer_start (EV_A_ w);
1527	}	1782	}
1528	}	1783	}
1529		1784
1530	#if EV_PERIODIC_ENABLE	1785	#if EV_PERIODIC_ENABLE
1531	void	1786	void noinline
1532	ev_periodic_start (EV_P_ ev_periodic *w)	1787	ev_periodic_start (EV_P_ ev_periodic *w)
1533	{	1788	{
1534	if (expect_false (ev_is_active (w)))	1789	if (expect_false (ev_is_active (w)))
1535	return;	1790	return;
1536		1791
…		…
1538	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1793	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1539	else if (w->interval)	1794	else if (w->interval)
1540	{	1795	{
1541	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1796	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1542	/* this formula differs from the one in periodic_reify because we do not always round up */	1797	/* this formula differs from the one in periodic_reify because we do not always round up */
1543	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1798	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1544	}	1799	}
		1800	else
		1801	((WT)w)->at = w->offset;
1545		1802
1546	ev_start (EV_A_ (W)w, ++periodiccnt);	1803	ev_start (EV_A_ (W)w, ++periodiccnt);
1547	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1804	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1548	periodics [periodiccnt - 1] = w;	1805	periodics [periodiccnt - 1] = (WT)w;
1549	upheap ((WT *)periodics, periodiccnt - 1);	1806	upheap (periodics, periodiccnt - 1);
1550		1807
1551	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1808	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
1552	}	1809	}
1553		1810
1554	void	1811	void noinline
1555	ev_periodic_stop (EV_P_ ev_periodic *w)	1812	ev_periodic_stop (EV_P_ ev_periodic *w)
1556	{	1813	{
1557	ev_clear_pending (EV_A_ (W)w);	1814	clear_pending (EV_A_ (W)w);
1558	if (expect_false (!ev_is_active (w)))	1815	if (expect_false (!ev_is_active (w)))
1559	return;	1816	return;
1560		1817
1561	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1818	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1562		1819
		1820	{
		1821	int active = ((W)w)->active;
		1822
1563	if (expect_true (((W)w)->active < periodiccnt--))	1823	if (expect_true (--active < --periodiccnt))
1564	{	1824	{
1565	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1825	periodics [active] = periodics [periodiccnt];
1566	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1826	adjustheap (periodics, periodiccnt, active);
1567	}	1827	}
		1828	}
1568		1829
1569	ev_stop (EV_A_ (W)w);	1830	ev_stop (EV_A_ (W)w);
1570	}	1831	}
1571		1832
1572	void	1833	void noinline
1573	ev_periodic_again (EV_P_ ev_periodic *w)	1834	ev_periodic_again (EV_P_ ev_periodic *w)
1574	{	1835	{
1575	/* TODO: use adjustheap and recalculation */	1836	/* TODO: use adjustheap and recalculation */
1576	ev_periodic_stop (EV_A_ w);	1837	ev_periodic_stop (EV_A_ w);
1577	ev_periodic_start (EV_A_ w);	1838	ev_periodic_start (EV_A_ w);
…		…
1580		1841
1581	#ifndef SA_RESTART	1842	#ifndef SA_RESTART
1582	# define SA_RESTART 0	1843	# define SA_RESTART 0
1583	#endif	1844	#endif
1584		1845
1585	void	1846	void noinline
1586	ev_signal_start (EV_P_ ev_signal *w)	1847	ev_signal_start (EV_P_ ev_signal *w)
1587	{	1848	{
1588	#if EV_MULTIPLICITY	1849	#if EV_MULTIPLICITY
1589	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1850	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1590	#endif	1851	#endif
1591	if (expect_false (ev_is_active (w)))	1852	if (expect_false (ev_is_active (w)))
1592	return;	1853	return;
1593		1854
1594	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1855	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1595		1856
		1857	{
		1858	#ifndef _WIN32
		1859	sigset_t full, prev;
		1860	sigfillset (&full);
		1861	sigprocmask (SIG_SETMASK, &full, &prev);
		1862	#endif
		1863
		1864	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1865
		1866	#ifndef _WIN32
		1867	sigprocmask (SIG_SETMASK, &prev, 0);
		1868	#endif
		1869	}
		1870
1596	ev_start (EV_A_ (W)w, 1);	1871	ev_start (EV_A_ (W)w, 1);
1597	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1598	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1872	wlist_add (&signals [w->signum - 1].head, (WL)w);
1599		1873
1600	if (!((WL)w)->next)	1874	if (!((WL)w)->next)
1601	{	1875	{
1602	#if _WIN32	1876	#if _WIN32
1603	signal (w->signum, sighandler);	1877	signal (w->signum, sighandler);
…		…
1609	sigaction (w->signum, &sa, 0);	1883	sigaction (w->signum, &sa, 0);
1610	#endif	1884	#endif
1611	}	1885	}
1612	}	1886	}
1613		1887
1614	void	1888	void noinline
1615	ev_signal_stop (EV_P_ ev_signal *w)	1889	ev_signal_stop (EV_P_ ev_signal *w)
1616	{	1890	{
1617	ev_clear_pending (EV_A_ (W)w);	1891	clear_pending (EV_A_ (W)w);
1618	if (expect_false (!ev_is_active (w)))	1892	if (expect_false (!ev_is_active (w)))
1619	return;	1893	return;
1620		1894
1621	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1895	wlist_del (&signals [w->signum - 1].head, (WL)w);
1622	ev_stop (EV_A_ (W)w);	1896	ev_stop (EV_A_ (W)w);
1623		1897
1624	if (!signals [w->signum - 1].head)	1898	if (!signals [w->signum - 1].head)
1625	signal (w->signum, SIG_DFL);	1899	signal (w->signum, SIG_DFL);
1626	}	1900	}
…		…
1633	#endif	1907	#endif
1634	if (expect_false (ev_is_active (w)))	1908	if (expect_false (ev_is_active (w)))
1635	return;	1909	return;
1636		1910
1637	ev_start (EV_A_ (W)w, 1);	1911	ev_start (EV_A_ (W)w, 1);
1638	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1912	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1639	}	1913	}
1640		1914
1641	void	1915	void
1642	ev_child_stop (EV_P_ ev_child *w)	1916	ev_child_stop (EV_P_ ev_child *w)
1643	{	1917	{
1644	ev_clear_pending (EV_A_ (W)w);	1918	clear_pending (EV_A_ (W)w);
1645	if (expect_false (!ev_is_active (w)))	1919	if (expect_false (!ev_is_active (w)))
1646	return;	1920	return;
1647		1921
1648	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1922	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1649	ev_stop (EV_A_ (W)w);	1923	ev_stop (EV_A_ (W)w);
1650	}	1924	}
1651		1925
1652	#if EV_STAT_ENABLE	1926	#if EV_STAT_ENABLE
1653		1927
…		…
1657	# endif	1931	# endif
1658		1932
1659	#define DEF_STAT_INTERVAL 5.0074891	1933	#define DEF_STAT_INTERVAL 5.0074891
1660	#define MIN_STAT_INTERVAL 0.1074891	1934	#define MIN_STAT_INTERVAL 0.1074891
1661		1935
		1936	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1937
		1938	#if EV_USE_INOTIFY
		1939	# define EV_INOTIFY_BUFSIZE 8192
		1940
		1941	static void noinline
		1942	infy_add (EV_P_ ev_stat *w)
		1943	{
		1944	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);
		1945
		1946	if (w->wd < 0)
		1947	{
		1948	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1949
		1950	/* monitor some parent directory for speedup hints */
		1951	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
		1952	{
		1953	char path [4096];
		1954	strcpy (path, w->path);
		1955
		1956	do
		1957	{
		1958	int mask = IN_MASK_ADD \| IN_DELETE_SELF \| IN_MOVE_SELF
		1959	\| (errno == EACCES ? IN_ATTRIB : IN_CREATE \| IN_MOVED_TO);
		1960
		1961	char *pend = strrchr (path, '/');
		1962
		1963	if (!pend)
		1964	break; /* whoops, no '/', complain to your admin */
		1965
		1966	*pend = 0;
		1967	w->wd = inotify_add_watch (fs_fd, path, mask);
		1968	}
		1969	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
		1970	}
		1971	}
		1972	else
		1973	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1974
		1975	if (w->wd >= 0)
		1976	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1977	}
		1978
		1979	static void noinline
		1980	infy_del (EV_P_ ev_stat *w)
		1981	{
		1982	int slot;
		1983	int wd = w->wd;
		1984
		1985	if (wd < 0)
		1986	return;
		1987
		1988	w->wd = -2;
		1989	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1990	wlist_del (&fs_hash [slot].head, (WL)w);
		1991
		1992	/* remove this watcher, if others are watching it, they will rearm */
		1993	inotify_rm_watch (fs_fd, wd);
		1994	}
		1995
		1996	static void noinline
		1997	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1998	{
		1999	if (slot < 0)
		2000	/* overflow, need to check for all hahs slots */
		2001	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2002	infy_wd (EV_A_ slot, wd, ev);
		2003	else
		2004	{
		2005	WL w_;
		2006
		2007	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		2008	{
		2009	ev_stat w = (ev_stat )w_;
		2010	w_ = w_->next; /* lets us remove this watcher and all before it */
		2011
		2012	if (w->wd == wd \|\| wd == -1)
		2013	{
		2014	if (ev->mask & (IN_IGNORED \| IN_UNMOUNT \| IN_DELETE_SELF))
		2015	{
		2016	w->wd = -1;
		2017	infy_add (EV_A_ w); /* re-add, no matter what */
		2018	}
		2019
		2020	stat_timer_cb (EV_A_ &w->timer, 0);
		2021	}
		2022	}
		2023	}
		2024	}
		2025
		2026	static void
		2027	infy_cb (EV_P_ ev_io *w, int revents)
		2028	{
		2029	char buf [EV_INOTIFY_BUFSIZE];
		2030	struct inotify_event ev = (struct inotify_event )buf;
		2031	int ofs;
		2032	int len = read (fs_fd, buf, sizeof (buf));
		2033
		2034	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2035	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2036	}
		2037
		2038	void inline_size
		2039	infy_init (EV_P)
		2040	{
		2041	if (fs_fd != -2)
		2042	return;
		2043
		2044	fs_fd = inotify_init ();
		2045
		2046	if (fs_fd >= 0)
		2047	{
		2048	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2049	ev_set_priority (&fs_w, EV_MAXPRI);
		2050	ev_io_start (EV_A_ &fs_w);
		2051	}
		2052	}
		2053
		2054	void inline_size
		2055	infy_fork (EV_P)
		2056	{
		2057	int slot;
		2058
		2059	if (fs_fd < 0)
		2060	return;
		2061
		2062	close (fs_fd);
		2063	fs_fd = inotify_init ();
		2064
		2065	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2066	{
		2067	WL w_ = fs_hash [slot].head;
		2068	fs_hash [slot].head = 0;
		2069
		2070	while (w_)
		2071	{
		2072	ev_stat w = (ev_stat )w_;
		2073	w_ = w_->next; /* lets us add this watcher */
		2074
		2075	w->wd = -1;
		2076
		2077	if (fs_fd >= 0)
		2078	infy_add (EV_A_ w); /* re-add, no matter what */
		2079	else
		2080	ev_timer_start (EV_A_ &w->timer);
		2081	}
		2082
		2083	}
		2084	}
		2085
		2086	#endif
		2087
1662	void	2088	void
1663	ev_stat_stat (EV_P_ ev_stat *w)	2089	ev_stat_stat (EV_P_ ev_stat *w)
1664	{	2090	{
1665	if (lstat (w->path, &w->attr) < 0)	2091	if (lstat (w->path, &w->attr) < 0)
1666	w->attr.st_nlink = 0;	2092	w->attr.st_nlink = 0;
1667	else if (!w->attr.st_nlink)	2093	else if (!w->attr.st_nlink)
1668	w->attr.st_nlink = 1;	2094	w->attr.st_nlink = 1;
1669	}	2095	}
1670		2096
1671	static void	2097	static void noinline
1672	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	2098	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1673	{	2099	{
1674	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));	2100	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
1675		2101
1676	/* we copy this here each the time so that */	2102	/* we copy this here each the time so that */
1677	/* prev has the old value when the callback gets invoked */	2103	/* prev has the old value when the callback gets invoked */
1678	w->prev = w->attr;	2104	w->prev = w->attr;
1679	ev_stat_stat (EV_A_ w);	2105	ev_stat_stat (EV_A_ w);
1680		2106
1681	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))	2107	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2108	if (
		2109	w->prev.st_dev != w->attr.st_dev
		2110	\|\| w->prev.st_ino != w->attr.st_ino
		2111	\|\| w->prev.st_mode != w->attr.st_mode
		2112	\|\| w->prev.st_nlink != w->attr.st_nlink
		2113	\|\| w->prev.st_uid != w->attr.st_uid
		2114	\|\| w->prev.st_gid != w->attr.st_gid
		2115	\|\| w->prev.st_rdev != w->attr.st_rdev
		2116	\|\| w->prev.st_size != w->attr.st_size
		2117	\|\| w->prev.st_atime != w->attr.st_atime
		2118	\|\| w->prev.st_mtime != w->attr.st_mtime
		2119	\|\| w->prev.st_ctime != w->attr.st_ctime
		2120	) {
		2121	#if EV_USE_INOTIFY
		2122	infy_del (EV_A_ w);
		2123	infy_add (EV_A_ w);
		2124	ev_stat_stat (EV_A_ w); /* avoid race... */
		2125	#endif
		2126
1682	ev_feed_event (EV_A_ w, EV_STAT);	2127	ev_feed_event (EV_A_ w, EV_STAT);
		2128	}
1683	}	2129	}
1684		2130
1685	void	2131	void
1686	ev_stat_start (EV_P_ ev_stat *w)	2132	ev_stat_start (EV_P_ ev_stat *w)
1687	{	2133	{
…		…
1697	if (w->interval < MIN_STAT_INTERVAL)	2143	if (w->interval < MIN_STAT_INTERVAL)
1698	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;	2144	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1699		2145
1700	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2146	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1701	ev_set_priority (&w->timer, ev_priority (w));	2147	ev_set_priority (&w->timer, ev_priority (w));
		2148
		2149	#if EV_USE_INOTIFY
		2150	infy_init (EV_A);
		2151
		2152	if (fs_fd >= 0)
		2153	infy_add (EV_A_ w);
		2154	else
		2155	#endif
1702	ev_timer_start (EV_A_ &w->timer);	2156	ev_timer_start (EV_A_ &w->timer);
1703		2157
1704	ev_start (EV_A_ (W)w, 1);	2158	ev_start (EV_A_ (W)w, 1);
1705	}	2159	}
1706		2160
1707	void	2161	void
1708	ev_stat_stop (EV_P_ ev_stat *w)	2162	ev_stat_stop (EV_P_ ev_stat *w)
1709	{	2163	{
1710	ev_clear_pending (EV_A_ (W)w);	2164	clear_pending (EV_A_ (W)w);
1711	if (expect_false (!ev_is_active (w)))	2165	if (expect_false (!ev_is_active (w)))
1712	return;	2166	return;
1713		2167
		2168	#if EV_USE_INOTIFY
		2169	infy_del (EV_A_ w);
		2170	#endif
1714	ev_timer_stop (EV_A_ &w->timer);	2171	ev_timer_stop (EV_A_ &w->timer);
1715		2172
1716	ev_stop (EV_A_ (W)w);	2173	ev_stop (EV_A_ (W)w);
1717	}	2174	}
1718	#endif	2175	#endif
1719		2176
		2177	#if EV_IDLE_ENABLE
1720	void	2178	void
1721	ev_idle_start (EV_P_ ev_idle *w)	2179	ev_idle_start (EV_P_ ev_idle *w)
1722	{	2180	{
1723	if (expect_false (ev_is_active (w)))	2181	if (expect_false (ev_is_active (w)))
1724	return;	2182	return;
1725		2183
		2184	pri_adjust (EV_A_ (W)w);
		2185
		2186	{
		2187	int active = ++idlecnt [ABSPRI (w)];
		2188
		2189	++idleall;
1726	ev_start (EV_A_ (W)w, ++idlecnt);	2190	ev_start (EV_A_ (W)w, active);
		2191
1727	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);	2192	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1728	idles [idlecnt - 1] = w;	2193	idles [ABSPRI (w)][active - 1] = w;
		2194	}
1729	}	2195	}
1730		2196
1731	void	2197	void
1732	ev_idle_stop (EV_P_ ev_idle *w)	2198	ev_idle_stop (EV_P_ ev_idle *w)
1733	{	2199	{
1734	ev_clear_pending (EV_A_ (W)w);	2200	clear_pending (EV_A_ (W)w);
1735	if (expect_false (!ev_is_active (w)))	2201	if (expect_false (!ev_is_active (w)))
1736	return;	2202	return;
1737		2203
1738	{	2204	{
1739	int active = ((W)w)->active;	2205	int active = ((W)w)->active;
1740	idles [active - 1] = idles [--idlecnt];	2206
		2207	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
1741	((W)idles [active - 1])->active = active;	2208	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2209
		2210	ev_stop (EV_A_ (W)w);
		2211	--idleall;
1742	}	2212	}
1743
1744	ev_stop (EV_A_ (W)w);
1745	}	2213	}
		2214	#endif
1746		2215
1747	void	2216	void
1748	ev_prepare_start (EV_P_ ev_prepare *w)	2217	ev_prepare_start (EV_P_ ev_prepare *w)
1749	{	2218	{
1750	if (expect_false (ev_is_active (w)))	2219	if (expect_false (ev_is_active (w)))
…		…
1756	}	2225	}
1757		2226
1758	void	2227	void
1759	ev_prepare_stop (EV_P_ ev_prepare *w)	2228	ev_prepare_stop (EV_P_ ev_prepare *w)
1760	{	2229	{
1761	ev_clear_pending (EV_A_ (W)w);	2230	clear_pending (EV_A_ (W)w);
1762	if (expect_false (!ev_is_active (w)))	2231	if (expect_false (!ev_is_active (w)))
1763	return;	2232	return;
1764		2233
1765	{	2234	{
1766	int active = ((W)w)->active;	2235	int active = ((W)w)->active;
…		…
1783	}	2252	}
1784		2253
1785	void	2254	void
1786	ev_check_stop (EV_P_ ev_check *w)	2255	ev_check_stop (EV_P_ ev_check *w)
1787	{	2256	{
1788	ev_clear_pending (EV_A_ (W)w);	2257	clear_pending (EV_A_ (W)w);
1789	if (expect_false (!ev_is_active (w)))	2258	if (expect_false (!ev_is_active (w)))
1790	return;	2259	return;
1791		2260
1792	{	2261	{
1793	int active = ((W)w)->active;	2262	int active = ((W)w)->active;
…		…
1800		2269
1801	#if EV_EMBED_ENABLE	2270	#if EV_EMBED_ENABLE
1802	void noinline	2271	void noinline
1803	ev_embed_sweep (EV_P_ ev_embed *w)	2272	ev_embed_sweep (EV_P_ ev_embed *w)
1804	{	2273	{
1805	ev_loop (w->loop, EVLOOP_NONBLOCK);	2274	ev_loop (w->other, EVLOOP_NONBLOCK);
1806	}	2275	}
1807		2276
1808	static void	2277	static void
1809	embed_cb (EV_P_ ev_io *io, int revents)	2278	embed_io_cb (EV_P_ ev_io *io, int revents)
1810	{	2279	{
1811	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2280	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
1812		2281
1813	if (ev_cb (w))	2282	if (ev_cb (w))
1814	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2283	ev_feed_event (EV_A_ (W)w, EV_EMBED);
1815	else	2284	else
1816	ev_embed_sweep (loop, w);	2285	ev_loop (w->other, EVLOOP_NONBLOCK);
1817	}	2286	}
		2287
		2288	static void
		2289	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2290	{
		2291	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
		2292
		2293	{
		2294	struct ev_loop *loop = w->other;
		2295
		2296	while (fdchangecnt)
		2297	{
		2298	fd_reify (EV_A);
		2299	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2300	}
		2301	}
		2302	}
		2303
		2304	#if 0
		2305	static void
		2306	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2307	{
		2308	ev_idle_stop (EV_A_ idle);
		2309	}
		2310	#endif
1818		2311
1819	void	2312	void
1820	ev_embed_start (EV_P_ ev_embed *w)	2313	ev_embed_start (EV_P_ ev_embed *w)
1821	{	2314	{
1822	if (expect_false (ev_is_active (w)))	2315	if (expect_false (ev_is_active (w)))
1823	return;	2316	return;
1824		2317
1825	{	2318	{
1826	struct ev_loop *loop = w->loop;	2319	struct ev_loop *loop = w->other;
1827	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2320	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1828	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2321	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
1829	}	2322	}
1830		2323
1831	ev_set_priority (&w->io, ev_priority (w));	2324	ev_set_priority (&w->io, ev_priority (w));
1832	ev_io_start (EV_A_ &w->io);	2325	ev_io_start (EV_A_ &w->io);
1833		2326
		2327	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2328	ev_set_priority (&w->prepare, EV_MINPRI);
		2329	ev_prepare_start (EV_A_ &w->prepare);
		2330
		2331	/ev_idle_init (&w->idle, e,bed_idle_cb);/
		2332
1834	ev_start (EV_A_ (W)w, 1);	2333	ev_start (EV_A_ (W)w, 1);
1835	}	2334	}
1836		2335
1837	void	2336	void
1838	ev_embed_stop (EV_P_ ev_embed *w)	2337	ev_embed_stop (EV_P_ ev_embed *w)
1839	{	2338	{
1840	ev_clear_pending (EV_A_ (W)w);	2339	clear_pending (EV_A_ (W)w);
1841	if (expect_false (!ev_is_active (w)))	2340	if (expect_false (!ev_is_active (w)))
1842	return;	2341	return;
1843		2342
1844	ev_io_stop (EV_A_ &w->io);	2343	ev_io_stop (EV_A_ &w->io);
		2344	ev_prepare_stop (EV_A_ &w->prepare);
1845		2345
1846	ev_stop (EV_A_ (W)w);	2346	ev_stop (EV_A_ (W)w);
1847	}	2347	}
1848	#endif	2348	#endif
1849		2349
…		…
1860	}	2360	}
1861		2361
1862	void	2362	void
1863	ev_fork_stop (EV_P_ ev_fork *w)	2363	ev_fork_stop (EV_P_ ev_fork *w)
1864	{	2364	{
1865	ev_clear_pending (EV_A_ (W)w);	2365	clear_pending (EV_A_ (W)w);
1866	if (expect_false (!ev_is_active (w)))	2366	if (expect_false (!ev_is_active (w)))
1867	return;	2367	return;
1868		2368
1869	{	2369	{
1870	int active = ((W)w)->active;	2370	int active = ((W)w)->active;
…		…
1938	ev_timer_set (&once->to, timeout, 0.);	2438	ev_timer_set (&once->to, timeout, 0.);
1939	ev_timer_start (EV_A_ &once->to);	2439	ev_timer_start (EV_A_ &once->to);
1940	}	2440	}
1941	}	2441	}
1942		2442
		2443	#if EV_MULTIPLICITY
		2444	#include "ev_wrap.h"
		2445	#endif
		2446
1943	#ifdef __cplusplus	2447	#ifdef __cplusplus
1944	}	2448	}
1945	#endif	2449	#endif
1946		2450

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Comparing libev/ev.c (file contents): Revision 1.149 by root, Tue Nov 27 19:23:31 2007 UTC vs. Revision 1.199 by root, Tue Dec 25 07:05:45 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.149 by root, Tue Nov 27 19:23:31 2007 UTC vs.
Revision 1.199 by root, Tue Dec 25 07:05:45 2007 UTC