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

Comparing libev/ev.c (file contents):
Revision 1.157 by root, Wed Nov 28 20:58:32 2007 UTC vs.
Revision 1.220 by root, Sun Apr 6 09:53:17 2008 UTC

…		…
1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without	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
35		43
		44	/* this big block deduces configuration from config.h */
36	#ifndef EV_STANDALONE	45	#ifndef EV_STANDALONE
37	# ifdef EV_CONFIG_H	46	# ifdef EV_CONFIG_H
38	# include EV_CONFIG_H	47	# include EV_CONFIG_H
39	# else	48	# else
40	# include "config.h"	49	# include "config.h"
51	# ifndef EV_USE_MONOTONIC	60	# ifndef EV_USE_MONOTONIC
52	# define EV_USE_MONOTONIC 0	61	# define EV_USE_MONOTONIC 0
53	# endif	62	# endif
54	# ifndef EV_USE_REALTIME	63	# ifndef EV_USE_REALTIME
55	# define EV_USE_REALTIME 0	64	# define EV_USE_REALTIME 0
		65	# endif
		66	# endif
		67
		68	# ifndef EV_USE_NANOSLEEP
		69	# if HAVE_NANOSLEEP
		70	# define EV_USE_NANOSLEEP 1
		71	# else
		72	# define EV_USE_NANOSLEEP 0
56	# endif	73	# endif
57	# endif	74	# endif
58		75
59	# ifndef EV_USE_SELECT	76	# ifndef EV_USE_SELECT
60	# if HAVE_SELECT && HAVE_SYS_SELECT_H	77	# if HAVE_SELECT && HAVE_SYS_SELECT_H
…		…
102	# else	119	# else
103	# define EV_USE_INOTIFY 0	120	# define EV_USE_INOTIFY 0
104	# endif	121	# endif
105	# endif	122	# endif
106		123
		124	# ifndef EV_USE_EVENTFD
		125	# if HAVE_EVENTFD
		126	# define EV_USE_EVENTFD 1
		127	# else
		128	# define EV_USE_EVENTFD 0
		129	# endif
		130	# endif
		131
107	#endif	132	#endif
108		133
109	#include <math.h>	134	#include <math.h>
110	#include <stdlib.h>	135	#include <stdlib.h>
111	#include <fcntl.h>	136	#include <fcntl.h>
…		…
136	# ifndef EV_SELECT_IS_WINSOCKET	161	# ifndef EV_SELECT_IS_WINSOCKET
137	# define EV_SELECT_IS_WINSOCKET 1	162	# define EV_SELECT_IS_WINSOCKET 1
138	# endif	163	# endif
139	#endif	164	#endif
140		165
141	/**/	166	/* this block tries to deduce configuration from header-defined symbols and defaults */
142		167
143	#ifndef EV_USE_MONOTONIC	168	#ifndef EV_USE_MONOTONIC
144	# define EV_USE_MONOTONIC 0	169	# define EV_USE_MONOTONIC 0
145	#endif	170	#endif
146		171
147	#ifndef EV_USE_REALTIME	172	#ifndef EV_USE_REALTIME
148	# define EV_USE_REALTIME 0	173	# define EV_USE_REALTIME 0
		174	#endif
		175
		176	#ifndef EV_USE_NANOSLEEP
		177	# define EV_USE_NANOSLEEP 0
149	#endif	178	#endif
150		179
151	#ifndef EV_USE_SELECT	180	#ifndef EV_USE_SELECT
152	# define EV_USE_SELECT 1	181	# define EV_USE_SELECT 1
153	#endif	182	#endif
…		…
159	# define EV_USE_POLL 1	188	# define EV_USE_POLL 1
160	# endif	189	# endif
161	#endif	190	#endif
162		191
163	#ifndef EV_USE_EPOLL	192	#ifndef EV_USE_EPOLL
		193	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		194	# define EV_USE_EPOLL 1
		195	# else
164	# define EV_USE_EPOLL 0	196	# define EV_USE_EPOLL 0
		197	# endif
165	#endif	198	#endif
166		199
167	#ifndef EV_USE_KQUEUE	200	#ifndef EV_USE_KQUEUE
168	# define EV_USE_KQUEUE 0	201	# define EV_USE_KQUEUE 0
169	#endif	202	#endif
…		…
171	#ifndef EV_USE_PORT	204	#ifndef EV_USE_PORT
172	# define EV_USE_PORT 0	205	# define EV_USE_PORT 0
173	#endif	206	#endif
174		207
175	#ifndef EV_USE_INOTIFY	208	#ifndef EV_USE_INOTIFY
		209	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		210	# define EV_USE_INOTIFY 1
		211	# else
176	# define EV_USE_INOTIFY 0	212	# define EV_USE_INOTIFY 0
		213	# endif
177	#endif	214	#endif
178		215
179	#ifndef EV_PID_HASHSIZE	216	#ifndef EV_PID_HASHSIZE
180	# if EV_MINIMAL	217	# if EV_MINIMAL
181	# define EV_PID_HASHSIZE 1	218	# define EV_PID_HASHSIZE 1
…		…
190	# else	227	# else
191	# define EV_INOTIFY_HASHSIZE 16	228	# define EV_INOTIFY_HASHSIZE 16
192	# endif	229	# endif
193	#endif	230	#endif
194		231
195	/**/	232	#ifndef EV_USE_EVENTFD
		233	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		234	# define EV_USE_EVENTFD 1
		235	# else
		236	# define EV_USE_EVENTFD 0
		237	# endif
		238	#endif
		239
		240	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
196		241
197	#ifndef CLOCK_MONOTONIC	242	#ifndef CLOCK_MONOTONIC
198	# undef EV_USE_MONOTONIC	243	# undef EV_USE_MONOTONIC
199	# define EV_USE_MONOTONIC 0	244	# define EV_USE_MONOTONIC 0
200	#endif	245	#endif
…		…
202	#ifndef CLOCK_REALTIME	247	#ifndef CLOCK_REALTIME
203	# undef EV_USE_REALTIME	248	# undef EV_USE_REALTIME
204	# define EV_USE_REALTIME 0	249	# define EV_USE_REALTIME 0
205	#endif	250	#endif
206		251
		252	#if !EV_STAT_ENABLE
		253	# undef EV_USE_INOTIFY
		254	# define EV_USE_INOTIFY 0
		255	#endif
		256
		257	#if !EV_USE_NANOSLEEP
		258	# ifndef _WIN32
		259	# include <sys/select.h>
		260	# endif
		261	#endif
		262
		263	#if EV_USE_INOTIFY
		264	# include <sys/inotify.h>
		265	#endif
		266
207	#if EV_SELECT_IS_WINSOCKET	267	#if EV_SELECT_IS_WINSOCKET
208	# include <winsock.h>	268	# include <winsock.h>
209	#endif	269	#endif
210		270
211	#if !EV_STAT_ENABLE
212	# define EV_USE_INOTIFY 0
213	#endif
214
215	#if EV_USE_INOTIFY	271	#if EV_USE_EVENTFD
216	# include <sys/inotify.h>	272	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		273	int eventfd (unsigned int initval, int flags);
217	#endif	274	#endif
218		275
219	/**/	276	/**/
		277
		278	/*
		279	* This is used to avoid floating point rounding problems.
		280	* It is added to ev_rt_now when scheduling periodics
		281	* to ensure progress, time-wise, even when rounding
		282	* errors are against us.
		283	* This value is good at least till the year 4000.
		284	* Better solutions welcome.
		285	*/
		286	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
220		287
221	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	288	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
222	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	289	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
223	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */	290	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds, TODO */
224		291
225	#if __GNUC__ >= 3	292	#if __GNUC__ >= 4
226	# define expect(expr,value) __builtin_expect ((expr),(value))	293	# define expect(expr,value) __builtin_expect ((expr),(value))
227	# define inline_size static inline /* inline for codesize */
228	# if EV_MINIMAL
229	# define noinline __attribute__ ((noinline))	294	# define noinline __attribute__ ((noinline))
230	# define inline_speed static noinline
231	# else
232	# define noinline
233	# define inline_speed static inline
234	# endif
235	#else	295	#else
236	# define expect(expr,value) (expr)	296	# define expect(expr,value) (expr)
237	# define inline_speed static
238	# define inline_size static
239	# define noinline	297	# define noinline
		298	# if __STDC_VERSION__ < 199901L
		299	# define inline
		300	# endif
240	#endif	301	#endif
241		302
242	#define expect_false(expr) expect ((expr) != 0, 0)	303	#define expect_false(expr) expect ((expr) != 0, 0)
243	#define expect_true(expr) expect ((expr) != 0, 1)	304	#define expect_true(expr) expect ((expr) != 0, 1)
		305	#define inline_size static inline
		306
		307	#if EV_MINIMAL
		308	# define inline_speed static noinline
		309	#else
		310	# define inline_speed static inline
		311	#endif
244		312
245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	313	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
246	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	314	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
247		315
248	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	316	#define EMPTY /* required for microsofts broken pseudo-c compiler */
249	#define EMPTY2(a,b) /* used to suppress some warnings */	317	#define EMPTY2(a,b) /* used to suppress some warnings */
250		318
251	typedef ev_watcher *W;	319	typedef ev_watcher *W;
252	typedef ev_watcher_list *WL;	320	typedef ev_watcher_list *WL;
253	typedef ev_watcher_time *WT;	321	typedef ev_watcher_time *WT;
254		322
		323	#if EV_USE_MONOTONIC
		324	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		325	/* giving it a reasonably high chance of working on typical architetcures */
255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	326	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		327	#endif
256		328
257	#ifdef _WIN32	329	#ifdef _WIN32
258	# include "ev_win32.c"	330	# include "ev_win32.c"
259	#endif	331	#endif
260		332
…		…
396	{	468	{
397	return ev_rt_now;	469	return ev_rt_now;
398	}	470	}
399	#endif	471	#endif
400		472
401	#define array_roundsize(type,n) (((n) \| 4) & ~3)	473	void
		474	ev_sleep (ev_tstamp delay)
		475	{
		476	if (delay > 0.)
		477	{
		478	#if EV_USE_NANOSLEEP
		479	struct timespec ts;
		480
		481	ts.tv_sec = (time_t)delay;
		482	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		483
		484	nanosleep (&ts, 0);
		485	#elif defined(_WIN32)
		486	Sleep ((unsigned long)(delay * 1e3));
		487	#else
		488	struct timeval tv;
		489
		490	tv.tv_sec = (time_t)delay;
		491	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		492
		493	select (0, 0, 0, 0, &tv);
		494	#endif
		495	}
		496	}
		497
		498	/*****************************************************************************/
		499
		500	int inline_size
		501	array_nextsize (int elem, int cur, int cnt)
		502	{
		503	int ncur = cur + 1;
		504
		505	do
		506	ncur <<= 1;
		507	while (cnt > ncur);
		508
		509	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		510	if (elem * ncur > 4096)
		511	{
		512	ncur *= elem;
		513	ncur = (ncur + elem + 4095 + sizeof (void ) 4) & ~4095;
		514	ncur = ncur - sizeof (void ) 4;
		515	ncur /= elem;
		516	}
		517
		518	return ncur;
		519	}
		520
		521	static noinline void *
		522	array_realloc (int elem, void base, int cur, int cnt)
		523	{
		524	cur = array_nextsize (elem, cur, cnt);
		525	return ev_realloc (base, elem * *cur);
		526	}
402		527
403	#define array_needsize(type,base,cur,cnt,init) \	528	#define array_needsize(type,base,cur,cnt,init) \
404	if (expect_false ((cnt) > cur)) \	529	if (expect_false ((cnt) > (cur))) \
405	{ \	530	{ \
406	int newcnt = cur; \	531	int ocur_ = (cur); \
407	do \	532	(base) = (type *)array_realloc \
408	{ \	533	(sizeof (type), (base), &(cur), (cnt)); \
409	newcnt = array_roundsize (type, newcnt << 1); \	534	init ((base) + (ocur_), (cur) - ocur_); \
410	} \
411	while ((cnt) > newcnt); \
412	\
413	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
414	init (base + cur, newcnt - cur); \
415	cur = newcnt; \
416	}	535	}
417		536
		537	#if 0
418	#define array_slim(type,stem) \	538	#define array_slim(type,stem) \
419	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	539	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
420	{ \	540	{ \
421	stem ## max = array_roundsize (stem ## cnt >> 1); \	541	stem ## max = array_roundsize (stem ## cnt >> 1); \
422	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\	542	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
423	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	543	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
424	}	544	}
		545	#endif
425		546
426	#define array_free(stem, idx) \	547	#define array_free(stem, idx) \
427	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	548	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
428		549
429	/*****************************************************************************/	550	/*****************************************************************************/
430		551
431	void noinline	552	void noinline
432	ev_feed_event (EV_P_ void *w, int revents)	553	ev_feed_event (EV_P_ void *w, int revents)
433	{	554	{
434	W w_ = (W)w;	555	W w_ = (W)w;
		556	int pri = ABSPRI (w_);
435		557
436	if (expect_false (w_->pending))	558	if (expect_false (w_->pending))
		559	pendings [pri][w_->pending - 1].events \|= revents;
		560	else
437	{	561	{
		562	w_->pending = ++pendingcnt [pri];
		563	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		564	pendings [pri][w_->pending - 1].w = w_;
438	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;	565	pendings [pri][w_->pending - 1].events = revents;
439	return;
440	}	566	}
441
442	w_->pending = ++pendingcnt [ABSPRI (w_)];
443	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
444	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
445	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
446	}	567	}
447		568
448	void inline_size	569	void inline_speed
449	queue_events (EV_P_ W *events, int eventcnt, int type)	570	queue_events (EV_P_ W *events, int eventcnt, int type)
450	{	571	{
451	int i;	572	int i;
452		573
453	for (i = 0; i < eventcnt; ++i)	574	for (i = 0; i < eventcnt; ++i)
…		…
485	}	606	}
486		607
487	void	608	void
488	ev_feed_fd_event (EV_P_ int fd, int revents)	609	ev_feed_fd_event (EV_P_ int fd, int revents)
489	{	610	{
		611	if (fd >= 0 && fd < anfdmax)
490	fd_event (EV_A_ fd, revents);	612	fd_event (EV_A_ fd, revents);
491	}	613	}
492		614
493	void inline_size	615	void inline_size
494	fd_reify (EV_P)	616	fd_reify (EV_P)
495	{	617	{
…		…
499	{	621	{
500	int fd = fdchanges [i];	622	int fd = fdchanges [i];
501	ANFD *anfd = anfds + fd;	623	ANFD *anfd = anfds + fd;
502	ev_io *w;	624	ev_io *w;
503		625
504	int events = 0;	626	unsigned char events = 0;
505		627
506	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	628	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
507	events \|= w->events;	629	events \|= (unsigned char)w->events;
508		630
509	#if EV_SELECT_IS_WINSOCKET	631	#if EV_SELECT_IS_WINSOCKET
510	if (events)	632	if (events)
511	{	633	{
512	unsigned long argp;	634	unsigned long argp;
		635	#ifdef EV_FD_TO_WIN32_HANDLE
		636	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		637	#else
513	anfd->handle = _get_osfhandle (fd);	638	anfd->handle = _get_osfhandle (fd);
		639	#endif
514	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	640	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
515	}	641	}
516	#endif	642	#endif
517		643
		644	{
		645	unsigned char o_events = anfd->events;
		646	unsigned char o_reify = anfd->reify;
		647
518	anfd->reify = 0;	648	anfd->reify = 0;
519
520	backend_modify (EV_A_ fd, anfd->events, events);
521	anfd->events = events;	649	anfd->events = events;
		650
		651	if (o_events != events \|\| o_reify & EV_IOFDSET)
		652	backend_modify (EV_A_ fd, o_events, events);
		653	}
522	}	654	}
523		655
524	fdchangecnt = 0;	656	fdchangecnt = 0;
525	}	657	}
526		658
527	void inline_size	659	void inline_size
528	fd_change (EV_P_ int fd)	660	fd_change (EV_P_ int fd, int flags)
529	{	661	{
530	if (expect_false (anfds [fd].reify))	662	unsigned char reify = anfds [fd].reify;
531	return;
532
533	anfds [fd].reify = 1;	663	anfds [fd].reify \|= flags;
534		664
		665	if (expect_true (!reify))
		666	{
535	++fdchangecnt;	667	++fdchangecnt;
536	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	668	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
537	fdchanges [fdchangecnt - 1] = fd;	669	fdchanges [fdchangecnt - 1] = fd;
		670	}
538	}	671	}
539		672
540	void inline_speed	673	void inline_speed
541	fd_kill (EV_P_ int fd)	674	fd_kill (EV_P_ int fd)
542	{	675	{
…		…
593		726
594	for (fd = 0; fd < anfdmax; ++fd)	727	for (fd = 0; fd < anfdmax; ++fd)
595	if (anfds [fd].events)	728	if (anfds [fd].events)
596	{	729	{
597	anfds [fd].events = 0;	730	anfds [fd].events = 0;
598	fd_change (EV_A_ fd);	731	fd_change (EV_A_ fd, EV_IOFDSET \| 1);
599	}	732	}
600	}	733	}
601		734
602	/*****************************************************************************/	735	/*****************************************************************************/
603		736
604	void inline_speed	737	void inline_speed
605	upheap (WT *heap, int k)	738	upheap (WT *heap, int k)
606	{	739	{
607	WT w = heap [k];	740	WT w = heap [k];
608		741
609	while (k && heap [k >> 1]->at > w->at)	742	while (k)
610	{	743	{
		744	int p = (k - 1) >> 1;
		745
		746	if (heap [p]->at <= w->at)
		747	break;
		748
611	heap [k] = heap [k >> 1];	749	heap [k] = heap [p];
612	((W)heap [k])->active = k + 1;	750	((W)heap [k])->active = k + 1;
613	k >>= 1;	751	k = p;
614	}	752	}
615		753
616	heap [k] = w;	754	heap [k] = w;
617	((W)heap [k])->active = k + 1;	755	((W)heap [k])->active = k + 1;
618
619	}	756	}
620		757
621	void inline_speed	758	void inline_speed
622	downheap (WT *heap, int N, int k)	759	downheap (WT *heap, int N, int k)
623	{	760	{
624	WT w = heap [k];	761	WT w = heap [k];
625		762
626	while (k < (N >> 1))	763	for (;;)
627	{	764	{
628	int j = k << 1;	765	int c = (k << 1) + 1;
629		766
630	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	767	if (c >= N)
631	++j;
632
633	if (w->at <= heap [j]->at)
634	break;	768	break;
635		769
		770	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		771	? 1 : 0;
		772
		773	if (w->at <= heap [c]->at)
		774	break;
		775
636	heap [k] = heap [j];	776	heap [k] = heap [c];
637	((W)heap [k])->active = k + 1;	777	((W)heap [k])->active = k + 1;
		778
638	k = j;	779	k = c;
639	}	780	}
640		781
641	heap [k] = w;	782	heap [k] = w;
642	((W)heap [k])->active = k + 1;	783	((W)heap [k])->active = k + 1;
643	}	784	}
…		…
652	/*****************************************************************************/	793	/*****************************************************************************/
653		794
654	typedef struct	795	typedef struct
655	{	796	{
656	WL head;	797	WL head;
657	sig_atomic_t volatile gotsig;	798	EV_ATOMIC_T gotsig;
658	} ANSIG;	799	} ANSIG;
659		800
660	static ANSIG *signals;	801	static ANSIG *signals;
661	static int signalmax;	802	static int signalmax;
662		803
663	static int sigpipe [2];	804	static EV_ATOMIC_T gotsig;
664	static sig_atomic_t volatile gotsig;
665	static ev_io sigev;
666		805
667	void inline_size	806	void inline_size
668	signals_init (ANSIG *base, int count)	807	signals_init (ANSIG *base, int count)
669	{	808	{
670	while (count--)	809	while (count--)
…		…
674		813
675	++base;	814	++base;
676	}	815	}
677	}	816	}
678		817
679	static void	818	/*****************************************************************************/
680	sighandler (int signum)
681	{
682	#if _WIN32
683	signal (signum, sighandler);
684	#endif
685		819
686	signals [signum - 1].gotsig = 1;
687
688	if (!gotsig)
689	{
690	int old_errno = errno;
691	gotsig = 1;
692	write (sigpipe [1], &signum, 1);
693	errno = old_errno;
694	}
695	}
696
697	void noinline
698	ev_feed_signal_event (EV_P_ int signum)
699	{
700	WL w;
701
702	#if EV_MULTIPLICITY
703	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
704	#endif
705
706	--signum;
707
708	if (signum < 0 \|\| signum >= signalmax)
709	return;
710
711	signals [signum].gotsig = 0;
712
713	for (w = signals [signum].head; w; w = w->next)
714	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
715	}
716
717	static void
718	sigcb (EV_P_ ev_io *iow, int revents)
719	{
720	int signum;
721
722	read (sigpipe [0], &revents, 1);
723	gotsig = 0;
724
725	for (signum = signalmax; signum--; )
726	if (signals [signum].gotsig)
727	ev_feed_signal_event (EV_A_ signum + 1);
728	}
729
730	void inline_size	820	void inline_speed
731	fd_intern (int fd)	821	fd_intern (int fd)
732	{	822	{
733	#ifdef _WIN32	823	#ifdef _WIN32
734	int arg = 1;	824	int arg = 1;
735	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	825	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
738	fcntl (fd, F_SETFL, O_NONBLOCK);	828	fcntl (fd, F_SETFL, O_NONBLOCK);
739	#endif	829	#endif
740	}	830	}
741		831
742	static void noinline	832	static void noinline
743	siginit (EV_P)	833	evpipe_init (EV_P)
744	{	834	{
		835	if (!ev_is_active (&pipeev))
		836	{
		837	#if EV_USE_EVENTFD
		838	if ((evfd = eventfd (0, 0)) >= 0)
		839	{
		840	evpipe [0] = -1;
		841	fd_intern (evfd);
		842	ev_io_set (&pipeev, evfd, EV_READ);
		843	}
		844	else
		845	#endif
		846	{
		847	while (pipe (evpipe))
		848	syserr ("(libev) error creating signal/async pipe");
		849
745	fd_intern (sigpipe [0]);	850	fd_intern (evpipe [0]);
746	fd_intern (sigpipe [1]);	851	fd_intern (evpipe [1]);
		852	ev_io_set (&pipeev, evpipe [0], EV_READ);
		853	}
747		854
748	ev_io_set (&sigev, sigpipe [0], EV_READ);
749	ev_io_start (EV_A_ &sigev);	855	ev_io_start (EV_A_ &pipeev);
750	ev_unref (EV_A); /* child watcher should not keep loop alive */	856	ev_unref (EV_A); /* watcher should not keep loop alive */
		857	}
		858	}
		859
		860	void inline_size
		861	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		862	{
		863	if (!*flag)
		864	{
		865	int old_errno = errno; /* save errno because write might clobber it */
		866
		867	*flag = 1;
		868
		869	#if EV_USE_EVENTFD
		870	if (evfd >= 0)
		871	{
		872	uint64_t counter = 1;
		873	write (evfd, &counter, sizeof (uint64_t));
		874	}
		875	else
		876	#endif
		877	write (evpipe [1], &old_errno, 1);
		878
		879	errno = old_errno;
		880	}
		881	}
		882
		883	static void
		884	pipecb (EV_P_ ev_io *iow, int revents)
		885	{
		886	#if EV_USE_EVENTFD
		887	if (evfd >= 0)
		888	{
		889	uint64_t counter = 1;
		890	read (evfd, &counter, sizeof (uint64_t));
		891	}
		892	else
		893	#endif
		894	{
		895	char dummy;
		896	read (evpipe [0], &dummy, 1);
		897	}
		898
		899	if (gotsig && ev_is_default_loop (EV_A))
		900	{
		901	int signum;
		902	gotsig = 0;
		903
		904	for (signum = signalmax; signum--; )
		905	if (signals [signum].gotsig)
		906	ev_feed_signal_event (EV_A_ signum + 1);
		907	}
		908
		909	#if EV_ASYNC_ENABLE
		910	if (gotasync)
		911	{
		912	int i;
		913	gotasync = 0;
		914
		915	for (i = asynccnt; i--; )
		916	if (asyncs [i]->sent)
		917	{
		918	asyncs [i]->sent = 0;
		919	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		920	}
		921	}
		922	#endif
751	}	923	}
752		924
753	/*****************************************************************************/	925	/*****************************************************************************/
754		926
		927	static void
		928	ev_sighandler (int signum)
		929	{
		930	#if EV_MULTIPLICITY
		931	struct ev_loop *loop = &default_loop_struct;
		932	#endif
		933
		934	#if _WIN32
		935	signal (signum, ev_sighandler);
		936	#endif
		937
		938	signals [signum - 1].gotsig = 1;
		939	evpipe_write (EV_A_ &gotsig);
		940	}
		941
		942	void noinline
		943	ev_feed_signal_event (EV_P_ int signum)
		944	{
		945	WL w;
		946
		947	#if EV_MULTIPLICITY
		948	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		949	#endif
		950
		951	--signum;
		952
		953	if (signum < 0 \|\| signum >= signalmax)
		954	return;
		955
		956	signals [signum].gotsig = 0;
		957
		958	for (w = signals [signum].head; w; w = w->next)
		959	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		960	}
		961
		962	/*****************************************************************************/
		963
755	static ev_child *childs [EV_PID_HASHSIZE];	964	static WL childs [EV_PID_HASHSIZE];
756		965
757	#ifndef _WIN32	966	#ifndef _WIN32
758		967
759	static ev_signal childev;	968	static ev_signal childev;
760		969
		970	#ifndef WIFCONTINUED
		971	# define WIFCONTINUED(status) 0
		972	#endif
		973
761	void inline_speed	974	void inline_speed
762	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	975	child_reap (EV_P_ int chain, int pid, int status)
763	{	976	{
764	ev_child *w;	977	ev_child *w;
		978	int traced = WIFSTOPPED (status) \|\| WIFCONTINUED (status);
765		979
766	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	980	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
		981	{
767	if (w->pid == pid \|\| !w->pid)	982	if ((w->pid == pid \|\| !w->pid)
		983	&& (!traced \|\| (w->flags & 1)))
768	{	984	{
769	ev_priority (w) = ev_priority (sw); /* need to do it now */	985	ev_set_priority (w, EV_MAXPRI); /* need to do it now, this must be the same prio as the signal watcher itself */
770	w->rpid = pid;	986	w->rpid = pid;
771	w->rstatus = status;	987	w->rstatus = status;
772	ev_feed_event (EV_A_ (W)w, EV_CHILD);	988	ev_feed_event (EV_A_ (W)w, EV_CHILD);
773	}	989	}
		990	}
774	}	991	}
775		992
776	#ifndef WCONTINUED	993	#ifndef WCONTINUED
777	# define WCONTINUED 0	994	# define WCONTINUED 0
778	#endif	995	#endif
…		…
787	if (!WCONTINUED	1004	if (!WCONTINUED
788	\|\| errno != EINVAL	1005	\|\| errno != EINVAL
789	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))	1006	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))
790	return;	1007	return;
791		1008
792	/* make sure we are called again until all childs have been reaped */	1009	/* make sure we are called again until all children have been reaped */
793	/* we need to do it this way so that the callback gets called before we continue */	1010	/* we need to do it this way so that the callback gets called before we continue */
794	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1011	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
795		1012
796	child_reap (EV_A_ sw, pid, pid, status);	1013	child_reap (EV_A_ pid, pid, status);
797	if (EV_PID_HASHSIZE > 1)	1014	if (EV_PID_HASHSIZE > 1)
798	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1015	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
799	}	1016	}
800		1017
801	#endif	1018	#endif
802		1019
803	/*****************************************************************************/	1020	/*****************************************************************************/
…		…
875	}	1092	}
876		1093
877	unsigned int	1094	unsigned int
878	ev_embeddable_backends (void)	1095	ev_embeddable_backends (void)
879	{	1096	{
880	return EVBACKEND_EPOLL	1097	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
881	\| EVBACKEND_KQUEUE	1098
882	\| EVBACKEND_PORT;	1099	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1100	/* please fix it and tell me how to detect the fix */
		1101	flags &= ~EVBACKEND_EPOLL;
		1102
		1103	return flags;
883	}	1104	}
884		1105
885	unsigned int	1106	unsigned int
886	ev_backend (EV_P)	1107	ev_backend (EV_P)
887	{	1108	{
888	return backend;	1109	return backend;
		1110	}
		1111
		1112	unsigned int
		1113	ev_loop_count (EV_P)
		1114	{
		1115	return loop_count;
		1116	}
		1117
		1118	void
		1119	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1120	{
		1121	io_blocktime = interval;
		1122	}
		1123
		1124	void
		1125	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1126	{
		1127	timeout_blocktime = interval;
889	}	1128	}
890		1129
891	static void noinline	1130	static void noinline
892	loop_init (EV_P_ unsigned int flags)	1131	loop_init (EV_P_ unsigned int flags)
893	{	1132	{
…		…
899	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1138	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
900	have_monotonic = 1;	1139	have_monotonic = 1;
901	}	1140	}
902	#endif	1141	#endif
903		1142
904	ev_rt_now = ev_time ();	1143	ev_rt_now = ev_time ();
905	mn_now = get_clock ();	1144	mn_now = get_clock ();
906	now_floor = mn_now;	1145	now_floor = mn_now;
907	rtmn_diff = ev_rt_now - mn_now;	1146	rtmn_diff = ev_rt_now - mn_now;
		1147
		1148	io_blocktime = 0.;
		1149	timeout_blocktime = 0.;
		1150	backend = 0;
		1151	backend_fd = -1;
		1152	gotasync = 0;
		1153	#if EV_USE_INOTIFY
		1154	fs_fd = -2;
		1155	#endif
		1156
		1157	/* pid check not overridable via env */
		1158	#ifndef _WIN32
		1159	if (flags & EVFLAG_FORKCHECK)
		1160	curpid = getpid ();
		1161	#endif
908		1162
909	if (!(flags & EVFLAG_NOENV)	1163	if (!(flags & EVFLAG_NOENV)
910	&& !enable_secure ()	1164	&& !enable_secure ()
911	&& getenv ("LIBEV_FLAGS"))	1165	&& getenv ("LIBEV_FLAGS"))
912	flags = atoi (getenv ("LIBEV_FLAGS"));	1166	flags = atoi (getenv ("LIBEV_FLAGS"));
913		1167
914	if (!(flags & 0x0000ffffUL))	1168	if (!(flags & 0x0000ffffUL))
915	flags \|= ev_recommended_backends ();	1169	flags \|= ev_recommended_backends ();
916		1170
917	backend = 0;
918	backend_fd = -1;
919	#if EV_USE_INOTIFY
920	fs_fd = -2;
921	#endif
922
923	#if EV_USE_PORT	1171	#if EV_USE_PORT
924	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1172	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
925	#endif	1173	#endif
926	#if EV_USE_KQUEUE	1174	#if EV_USE_KQUEUE
927	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1175	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
934	#endif	1182	#endif
935	#if EV_USE_SELECT	1183	#if EV_USE_SELECT
936	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1184	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
937	#endif	1185	#endif
938		1186
939	ev_init (&sigev, sigcb);	1187	ev_init (&pipeev, pipecb);
940	ev_set_priority (&sigev, EV_MAXPRI);	1188	ev_set_priority (&pipeev, EV_MAXPRI);
941	}	1189	}
942	}	1190	}
943		1191
944	static void noinline	1192	static void noinline
945	loop_destroy (EV_P)	1193	loop_destroy (EV_P)
946	{	1194	{
947	int i;	1195	int i;
		1196
		1197	if (ev_is_active (&pipeev))
		1198	{
		1199	ev_ref (EV_A); /* signal watcher */
		1200	ev_io_stop (EV_A_ &pipeev);
		1201
		1202	#if EV_USE_EVENTFD
		1203	if (evfd >= 0)
		1204	close (evfd);
		1205	#endif
		1206
		1207	if (evpipe [0] >= 0)
		1208	{
		1209	close (evpipe [0]);
		1210	close (evpipe [1]);
		1211	}
		1212	}
948		1213
949	#if EV_USE_INOTIFY	1214	#if EV_USE_INOTIFY
950	if (fs_fd >= 0)	1215	if (fs_fd >= 0)
951	close (fs_fd);	1216	close (fs_fd);
952	#endif	1217	#endif
…		…
969	#if EV_USE_SELECT	1234	#if EV_USE_SELECT
970	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1235	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
971	#endif	1236	#endif
972		1237
973	for (i = NUMPRI; i--; )	1238	for (i = NUMPRI; i--; )
		1239	{
974	array_free (pending, [i]);	1240	array_free (pending, [i]);
		1241	#if EV_IDLE_ENABLE
		1242	array_free (idle, [i]);
		1243	#endif
		1244	}
		1245
		1246	ev_free (anfds); anfdmax = 0;
975		1247
976	/* have to use the microsoft-never-gets-it-right macro */	1248	/* have to use the microsoft-never-gets-it-right macro */
977	array_free (fdchange, EMPTY0);	1249	array_free (fdchange, EMPTY);
978	array_free (timer, EMPTY0);	1250	array_free (timer, EMPTY);
979	#if EV_PERIODIC_ENABLE	1251	#if EV_PERIODIC_ENABLE
980	array_free (periodic, EMPTY0);	1252	array_free (periodic, EMPTY);
981	#endif	1253	#endif
		1254	#if EV_FORK_ENABLE
982	array_free (idle, EMPTY0);	1255	array_free (fork, EMPTY);
		1256	#endif
983	array_free (prepare, EMPTY0);	1257	array_free (prepare, EMPTY);
984	array_free (check, EMPTY0);	1258	array_free (check, EMPTY);
		1259	#if EV_ASYNC_ENABLE
		1260	array_free (async, EMPTY);
		1261	#endif
985		1262
986	backend = 0;	1263	backend = 0;
987	}	1264	}
988		1265
989	void inline_size infy_fork (EV_P);	1266	void inline_size infy_fork (EV_P);
…		…
1002	#endif	1279	#endif
1003	#if EV_USE_INOTIFY	1280	#if EV_USE_INOTIFY
1004	infy_fork (EV_A);	1281	infy_fork (EV_A);
1005	#endif	1282	#endif
1006		1283
1007	if (ev_is_active (&sigev))	1284	if (ev_is_active (&pipeev))
1008	{	1285	{
1009	/* default loop */	1286	/* this "locks" the handlers against writing to the pipe */
		1287	/* while we modify the fd vars */
		1288	gotsig = 1;
		1289	#if EV_ASYNC_ENABLE
		1290	gotasync = 1;
		1291	#endif
1010		1292
1011	ev_ref (EV_A);	1293	ev_ref (EV_A);
1012	ev_io_stop (EV_A_ &sigev);	1294	ev_io_stop (EV_A_ &pipeev);
		1295
		1296	#if EV_USE_EVENTFD
		1297	if (evfd >= 0)
		1298	close (evfd);
		1299	#endif
		1300
		1301	if (evpipe [0] >= 0)
		1302	{
1013	close (sigpipe [0]);	1303	close (evpipe [0]);
1014	close (sigpipe [1]);	1304	close (evpipe [1]);
		1305	}
1015		1306
1016	while (pipe (sigpipe))
1017	syserr ("(libev) error creating pipe");
1018
1019	siginit (EV_A);	1307	evpipe_init (EV_A);
		1308	/* now iterate over everything, in case we missed something */
		1309	pipecb (EV_A_ &pipeev, EV_READ);
1020	}	1310	}
1021		1311
1022	postfork = 0;	1312	postfork = 0;
1023	}	1313	}
1024		1314
…		…
1046	}	1336	}
1047		1337
1048	void	1338	void
1049	ev_loop_fork (EV_P)	1339	ev_loop_fork (EV_P)
1050	{	1340	{
1051	postfork = 1;	1341	postfork = 1; /* must be in line with ev_default_fork */
1052	}	1342	}
1053		1343
1054	#endif	1344	#endif
1055		1345
1056	#if EV_MULTIPLICITY	1346	#if EV_MULTIPLICITY
…		…
1059	#else	1349	#else
1060	int	1350	int
1061	ev_default_loop (unsigned int flags)	1351	ev_default_loop (unsigned int flags)
1062	#endif	1352	#endif
1063	{	1353	{
1064	if (sigpipe [0] == sigpipe [1])
1065	if (pipe (sigpipe))
1066	return 0;
1067
1068	if (!ev_default_loop_ptr)	1354	if (!ev_default_loop_ptr)
1069	{	1355	{
1070	#if EV_MULTIPLICITY	1356	#if EV_MULTIPLICITY
1071	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1357	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1072	#else	1358	#else
…		…
1075		1361
1076	loop_init (EV_A_ flags);	1362	loop_init (EV_A_ flags);
1077		1363
1078	if (ev_backend (EV_A))	1364	if (ev_backend (EV_A))
1079	{	1365	{
1080	siginit (EV_A);
1081
1082	#ifndef _WIN32	1366	#ifndef _WIN32
1083	ev_signal_init (&childev, childcb, SIGCHLD);	1367	ev_signal_init (&childev, childcb, SIGCHLD);
1084	ev_set_priority (&childev, EV_MAXPRI);	1368	ev_set_priority (&childev, EV_MAXPRI);
1085	ev_signal_start (EV_A_ &childev);	1369	ev_signal_start (EV_A_ &childev);
1086	ev_unref (EV_A); /* child watcher should not keep loop alive */	1370	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1103	#ifndef _WIN32	1387	#ifndef _WIN32
1104	ev_ref (EV_A); /* child watcher */	1388	ev_ref (EV_A); /* child watcher */
1105	ev_signal_stop (EV_A_ &childev);	1389	ev_signal_stop (EV_A_ &childev);
1106	#endif	1390	#endif
1107		1391
1108	ev_ref (EV_A); /* signal watcher */
1109	ev_io_stop (EV_A_ &sigev);
1110
1111	close (sigpipe [0]); sigpipe [0] = 0;
1112	close (sigpipe [1]); sigpipe [1] = 0;
1113
1114	loop_destroy (EV_A);	1392	loop_destroy (EV_A);
1115	}	1393	}
1116		1394
1117	void	1395	void
1118	ev_default_fork (void)	1396	ev_default_fork (void)
…		…
1120	#if EV_MULTIPLICITY	1398	#if EV_MULTIPLICITY
1121	struct ev_loop *loop = ev_default_loop_ptr;	1399	struct ev_loop *loop = ev_default_loop_ptr;
1122	#endif	1400	#endif
1123		1401
1124	if (backend)	1402	if (backend)
1125	postfork = 1;	1403	postfork = 1; /* must be in line with ev_loop_fork */
1126	}	1404	}
1127		1405
1128	/*****************************************************************************/	1406	/*****************************************************************************/
1129		1407
1130	int inline_size	1408	void
1131	any_pending (EV_P)	1409	ev_invoke (EV_P_ void *w, int revents)
1132	{	1410	{
1133	int pri;	1411	EV_CB_INVOKE ((W)w, revents);
1134
1135	for (pri = NUMPRI; pri--; )
1136	if (pendingcnt [pri])
1137	return 1;
1138
1139	return 0;
1140	}	1412	}
1141		1413
1142	void inline_speed	1414	void inline_speed
1143	call_pending (EV_P)	1415	call_pending (EV_P)
1144	{	1416	{
…		…
1162	void inline_size	1434	void inline_size
1163	timers_reify (EV_P)	1435	timers_reify (EV_P)
1164	{	1436	{
1165	while (timercnt && ((WT)timers [0])->at <= mn_now)	1437	while (timercnt && ((WT)timers [0])->at <= mn_now)
1166	{	1438	{
1167	ev_timer *w = timers [0];	1439	ev_timer w = (ev_timer )timers [0];
1168		1440
1169	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/	1441	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1170		1442
1171	/* first reschedule or stop timer */	1443	/* first reschedule or stop timer */
1172	if (w->repeat)	1444	if (w->repeat)
…		…
1175		1447
1176	((WT)w)->at += w->repeat;	1448	((WT)w)->at += w->repeat;
1177	if (((WT)w)->at < mn_now)	1449	if (((WT)w)->at < mn_now)
1178	((WT)w)->at = mn_now;	1450	((WT)w)->at = mn_now;
1179		1451
1180	downheap ((WT *)timers, timercnt, 0);	1452	downheap (timers, timercnt, 0);
1181	}	1453	}
1182	else	1454	else
1183	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1455	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1184		1456
1185	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1457	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1190	void inline_size	1462	void inline_size
1191	periodics_reify (EV_P)	1463	periodics_reify (EV_P)
1192	{	1464	{
1193	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1465	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1194	{	1466	{
1195	ev_periodic *w = periodics [0];	1467	ev_periodic w = (ev_periodic )periodics [0];
1196		1468
1197	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/	1469	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1198		1470
1199	/* first reschedule or stop timer */	1471	/* first reschedule or stop timer */
1200	if (w->reschedule_cb)	1472	if (w->reschedule_cb)
1201	{	1473	{
1202	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1474	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1203	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1475	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1204	downheap ((WT *)periodics, periodiccnt, 0);	1476	downheap (periodics, periodiccnt, 0);
1205	}	1477	}
1206	else if (w->interval)	1478	else if (w->interval)
1207	{	1479	{
1208	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1480	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1481	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1209	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1482	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1210	downheap ((WT *)periodics, periodiccnt, 0);	1483	downheap (periodics, periodiccnt, 0);
1211	}	1484	}
1212	else	1485	else
1213	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1486	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1214		1487
1215	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1488	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1222	int i;	1495	int i;
1223		1496
1224	/* adjust periodics after time jump */	1497	/* adjust periodics after time jump */
1225	for (i = 0; i < periodiccnt; ++i)	1498	for (i = 0; i < periodiccnt; ++i)
1226	{	1499	{
1227	ev_periodic *w = periodics [i];	1500	ev_periodic w = (ev_periodic )periodics [i];
1228		1501
1229	if (w->reschedule_cb)	1502	if (w->reschedule_cb)
1230	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1503	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1231	else if (w->interval)	1504	else if (w->interval)
1232	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1505	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1233	}	1506	}
1234		1507
1235	/* now rebuild the heap */	1508	/* now rebuild the heap */
1236	for (i = periodiccnt >> 1; i--; )	1509	for (i = periodiccnt >> 1; i--; )
1237	downheap ((WT *)periodics, periodiccnt, i);	1510	downheap (periodics, periodiccnt, i);
1238	}	1511	}
1239	#endif	1512	#endif
1240		1513
		1514	#if EV_IDLE_ENABLE
1241	int inline_size	1515	void inline_size
1242	time_update_monotonic (EV_P)	1516	idle_reify (EV_P)
1243	{	1517	{
		1518	if (expect_false (idleall))
		1519	{
		1520	int pri;
		1521
		1522	for (pri = NUMPRI; pri--; )
		1523	{
		1524	if (pendingcnt [pri])
		1525	break;
		1526
		1527	if (idlecnt [pri])
		1528	{
		1529	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1530	break;
		1531	}
		1532	}
		1533	}
		1534	}
		1535	#endif
		1536
		1537	void inline_speed
		1538	time_update (EV_P_ ev_tstamp max_block)
		1539	{
		1540	int i;
		1541
		1542	#if EV_USE_MONOTONIC
		1543	if (expect_true (have_monotonic))
		1544	{
		1545	ev_tstamp odiff = rtmn_diff;
		1546
1244	mn_now = get_clock ();	1547	mn_now = get_clock ();
1245		1548
		1549	/* only fetch the realtime clock every 0.5MIN_TIMEJUMP seconds /
		1550	/* interpolate in the meantime */
1246	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1551	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1247	{	1552	{
1248	ev_rt_now = rtmn_diff + mn_now;	1553	ev_rt_now = rtmn_diff + mn_now;
1249	return 0;	1554	return;
1250	}	1555	}
1251	else	1556
1252	{
1253	now_floor = mn_now;	1557	now_floor = mn_now;
1254	ev_rt_now = ev_time ();	1558	ev_rt_now = ev_time ();
1255	return 1;
1256	}
1257	}
1258		1559
1259	void inline_size	1560	/* loop a few times, before making important decisions.
1260	time_update (EV_P)	1561	* on the choice of "4": one iteration isn't enough,
1261	{	1562	* in case we get preempted during the calls to
1262	int i;	1563	* ev_time and get_clock. a second call is almost guaranteed
1263		1564	* to succeed in that case, though. and looping a few more times
1264	#if EV_USE_MONOTONIC	1565	* doesn't hurt either as we only do this on time-jumps or
1265	if (expect_true (have_monotonic))	1566	* in the unlikely event of having been preempted here.
1266	{	1567	*/
1267	if (time_update_monotonic (EV_A))	1568	for (i = 4; --i; )
1268	{	1569	{
1269	ev_tstamp odiff = rtmn_diff;
1270
1271	/* loop a few times, before making important decisions.
1272	* on the choice of "4": one iteration isn't enough,
1273	* in case we get preempted during the calls to
1274	* ev_time and get_clock. a second call is almost guaranteed
1275	* to succeed in that case, though. and looping a few more times
1276	* doesn't hurt either as we only do this on time-jumps or
1277	* in the unlikely event of having been preempted here.
1278	*/
1279	for (i = 4; --i; )
1280	{
1281	rtmn_diff = ev_rt_now - mn_now;	1570	rtmn_diff = ev_rt_now - mn_now;
1282		1571
1283	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1572	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1284	return; /* all is well */	1573	return; /* all is well */
1285		1574
1286	ev_rt_now = ev_time ();	1575	ev_rt_now = ev_time ();
1287	mn_now = get_clock ();	1576	mn_now = get_clock ();
1288	now_floor = mn_now;	1577	now_floor = mn_now;
1289	}	1578	}
1290		1579
1291	# if EV_PERIODIC_ENABLE	1580	# if EV_PERIODIC_ENABLE
1292	periodics_reschedule (EV_A);	1581	periodics_reschedule (EV_A);
1293	# endif	1582	# endif
1294	/* no timer adjustment, as the monotonic clock doesn't jump */	1583	/* no timer adjustment, as the monotonic clock doesn't jump */
1295	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1584	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1296	}
1297	}	1585	}
1298	else	1586	else
1299	#endif	1587	#endif
1300	{	1588	{
1301	ev_rt_now = ev_time ();	1589	ev_rt_now = ev_time ();
1302		1590
1303	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1591	if (expect_false (mn_now > ev_rt_now \|\| ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1304	{	1592	{
1305	#if EV_PERIODIC_ENABLE	1593	#if EV_PERIODIC_ENABLE
1306	periodics_reschedule (EV_A);	1594	periodics_reschedule (EV_A);
1307	#endif	1595	#endif
1308
1309	/* adjust timers. this is easy, as the offset is the same for all of them */	1596	/* adjust timers. this is easy, as the offset is the same for all of them */
1310	for (i = 0; i < timercnt; ++i)	1597	for (i = 0; i < timercnt; ++i)
1311	((WT)timers [i])->at += ev_rt_now - mn_now;	1598	((WT)timers [i])->at += ev_rt_now - mn_now;
1312	}	1599	}
1313		1600
…		…
1330	static int loop_done;	1617	static int loop_done;
1331		1618
1332	void	1619	void
1333	ev_loop (EV_P_ int flags)	1620	ev_loop (EV_P_ int flags)
1334	{	1621	{
1335	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)	1622	loop_done = EVUNLOOP_CANCEL;
1336	? EVUNLOOP_ONE
1337	: EVUNLOOP_CANCEL;
1338		1623
1339	while (activecnt)	1624	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1625
		1626	do
1340	{	1627	{
		1628	#ifndef _WIN32
		1629	if (expect_false (curpid)) /* penalise the forking check even more */
		1630	if (expect_false (getpid () != curpid))
		1631	{
		1632	curpid = getpid ();
		1633	postfork = 1;
		1634	}
		1635	#endif
		1636
1341	#if EV_FORK_ENABLE	1637	#if EV_FORK_ENABLE
1342	/* we might have forked, so queue fork handlers */	1638	/* we might have forked, so queue fork handlers */
1343	if (expect_false (postfork))	1639	if (expect_false (postfork))
1344	if (forkcnt)	1640	if (forkcnt)
1345	{	1641	{
1346	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	1642	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1347	call_pending (EV_A);	1643	call_pending (EV_A);
1348	}	1644	}
1349	#endif	1645	#endif
1350		1646
1351	/* queue check watchers (and execute them) */	1647	/* queue prepare watchers (and execute them) */
1352	if (expect_false (preparecnt))	1648	if (expect_false (preparecnt))
1353	{	1649	{
1354	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1650	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1355	call_pending (EV_A);	1651	call_pending (EV_A);
1356	}	1652	}
1357		1653
		1654	if (expect_false (!activecnt))
		1655	break;
		1656
1358	/* we might have forked, so reify kernel state if necessary */	1657	/* we might have forked, so reify kernel state if necessary */
1359	if (expect_false (postfork))	1658	if (expect_false (postfork))
1360	loop_fork (EV_A);	1659	loop_fork (EV_A);
1361		1660
1362	/* update fd-related kernel structures */	1661	/* update fd-related kernel structures */
1363	fd_reify (EV_A);	1662	fd_reify (EV_A);
1364		1663
1365	/* calculate blocking time */	1664	/* calculate blocking time */
1366	{	1665	{
1367	ev_tstamp block;	1666	ev_tstamp waittime = 0.;
		1667	ev_tstamp sleeptime = 0.;
1368		1668
1369	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1669	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1370	block = 0.; /* do not block at all */
1371	else
1372	{	1670	{
1373	/* update time to cancel out callback processing overhead */	1671	/* update time to cancel out callback processing overhead */
1374	#if EV_USE_MONOTONIC
1375	if (expect_true (have_monotonic))
1376	time_update_monotonic (EV_A);	1672	time_update (EV_A_ 1e100);
1377	else
1378	#endif
1379	{
1380	ev_rt_now = ev_time ();
1381	mn_now = ev_rt_now;
1382	}
1383		1673
1384	block = MAX_BLOCKTIME;	1674	waittime = MAX_BLOCKTIME;
1385		1675
1386	if (timercnt)	1676	if (timercnt)
1387	{	1677	{
1388	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1678	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1389	if (block > to) block = to;	1679	if (waittime > to) waittime = to;
1390	}	1680	}
1391		1681
1392	#if EV_PERIODIC_ENABLE	1682	#if EV_PERIODIC_ENABLE
1393	if (periodiccnt)	1683	if (periodiccnt)
1394	{	1684	{
1395	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1685	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1396	if (block > to) block = to;	1686	if (waittime > to) waittime = to;
1397	}	1687	}
1398	#endif	1688	#endif
1399		1689
1400	if (expect_false (block < 0.)) block = 0.;	1690	if (expect_false (waittime < timeout_blocktime))
		1691	waittime = timeout_blocktime;
		1692
		1693	sleeptime = waittime - backend_fudge;
		1694
		1695	if (expect_true (sleeptime > io_blocktime))
		1696	sleeptime = io_blocktime;
		1697
		1698	if (sleeptime)
		1699	{
		1700	ev_sleep (sleeptime);
		1701	waittime -= sleeptime;
		1702	}
1401	}	1703	}
1402		1704
		1705	++loop_count;
1403	backend_poll (EV_A_ block);	1706	backend_poll (EV_A_ waittime);
		1707
		1708	/* update ev_rt_now, do magic */
		1709	time_update (EV_A_ waittime + sleeptime);
1404	}	1710	}
1405
1406	/* update ev_rt_now, do magic */
1407	time_update (EV_A);
1408		1711
1409	/* queue pending timers and reschedule them */	1712	/* queue pending timers and reschedule them */
1410	timers_reify (EV_A); /* relative timers called last */	1713	timers_reify (EV_A); /* relative timers called last */
1411	#if EV_PERIODIC_ENABLE	1714	#if EV_PERIODIC_ENABLE
1412	periodics_reify (EV_A); /* absolute timers called first */	1715	periodics_reify (EV_A); /* absolute timers called first */
1413	#endif	1716	#endif
1414		1717
		1718	#if EV_IDLE_ENABLE
1415	/* queue idle watchers unless other events are pending */	1719	/* queue idle watchers unless other events are pending */
1416	if (idlecnt && !any_pending (EV_A))	1720	idle_reify (EV_A);
1417	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1721	#endif
1418		1722
1419	/* queue check watchers, to be executed first */	1723	/* queue check watchers, to be executed first */
1420	if (expect_false (checkcnt))	1724	if (expect_false (checkcnt))
1421	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1725	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1422		1726
1423	call_pending (EV_A);	1727	call_pending (EV_A);
1424
1425	if (expect_false (loop_done))
1426	break;
1427	}	1728	}
		1729	while (expect_true (
		1730	activecnt
		1731	&& !loop_done
		1732	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))
		1733	));
1428		1734
1429	if (loop_done == EVUNLOOP_ONE)	1735	if (loop_done == EVUNLOOP_ONE)
1430	loop_done = EVUNLOOP_CANCEL;	1736	loop_done = EVUNLOOP_CANCEL;
1431	}	1737	}
1432		1738
…		…
1459	head = &(*head)->next;	1765	head = &(*head)->next;
1460	}	1766	}
1461	}	1767	}
1462		1768
1463	void inline_speed	1769	void inline_speed
1464	ev_clear_pending (EV_P_ W w)	1770	clear_pending (EV_P_ W w)
1465	{	1771	{
1466	if (w->pending)	1772	if (w->pending)
1467	{	1773	{
1468	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1774	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1469	w->pending = 0;	1775	w->pending = 0;
1470	}	1776	}
1471	}	1777	}
1472		1778
		1779	int
		1780	ev_clear_pending (EV_P_ void *w)
		1781	{
		1782	W w_ = (W)w;
		1783	int pending = w_->pending;
		1784
		1785	if (expect_true (pending))
		1786	{
		1787	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1788	w_->pending = 0;
		1789	p->w = 0;
		1790	return p->events;
		1791	}
		1792	else
		1793	return 0;
		1794	}
		1795
		1796	void inline_size
		1797	pri_adjust (EV_P_ W w)
		1798	{
		1799	int pri = w->priority;
		1800	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1801	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1802	w->priority = pri;
		1803	}
		1804
1473	void inline_speed	1805	void inline_speed
1474	ev_start (EV_P_ W w, int active)	1806	ev_start (EV_P_ W w, int active)
1475	{	1807	{
1476	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1808	pri_adjust (EV_A_ w);
1477	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1478
1479	w->active = active;	1809	w->active = active;
1480	ev_ref (EV_A);	1810	ev_ref (EV_A);
1481	}	1811	}
1482		1812
1483	void inline_size	1813	void inline_size
…		…
1487	w->active = 0;	1817	w->active = 0;
1488	}	1818	}
1489		1819
1490	/*****************************************************************************/	1820	/*****************************************************************************/
1491		1821
1492	void	1822	void noinline
1493	ev_io_start (EV_P_ ev_io *w)	1823	ev_io_start (EV_P_ ev_io *w)
1494	{	1824	{
1495	int fd = w->fd;	1825	int fd = w->fd;
1496		1826
1497	if (expect_false (ev_is_active (w)))	1827	if (expect_false (ev_is_active (w)))
…		…
1499		1829
1500	assert (("ev_io_start called with negative fd", fd >= 0));	1830	assert (("ev_io_start called with negative fd", fd >= 0));
1501		1831
1502	ev_start (EV_A_ (W)w, 1);	1832	ev_start (EV_A_ (W)w, 1);
1503	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1833	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1504	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1834	wlist_add (&anfds[fd].head, (WL)w);
1505		1835
1506	fd_change (EV_A_ fd);	1836	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);
		1837	w->events &= ~EV_IOFDSET;
1507	}	1838	}
1508		1839
1509	void	1840	void noinline
1510	ev_io_stop (EV_P_ ev_io *w)	1841	ev_io_stop (EV_P_ ev_io *w)
1511	{	1842	{
1512	ev_clear_pending (EV_A_ (W)w);	1843	clear_pending (EV_A_ (W)w);
1513	if (expect_false (!ev_is_active (w)))	1844	if (expect_false (!ev_is_active (w)))
1514	return;	1845	return;
1515		1846
1516	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1847	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1517		1848
1518	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1849	wlist_del (&anfds[w->fd].head, (WL)w);
1519	ev_stop (EV_A_ (W)w);	1850	ev_stop (EV_A_ (W)w);
1520		1851
1521	fd_change (EV_A_ w->fd);	1852	fd_change (EV_A_ w->fd, 1);
1522	}	1853	}
1523		1854
1524	void	1855	void noinline
1525	ev_timer_start (EV_P_ ev_timer *w)	1856	ev_timer_start (EV_P_ ev_timer *w)
1526	{	1857	{
1527	if (expect_false (ev_is_active (w)))	1858	if (expect_false (ev_is_active (w)))
1528	return;	1859	return;
1529		1860
1530	((WT)w)->at += mn_now;	1861	((WT)w)->at += mn_now;
1531		1862
1532	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1863	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1533		1864
1534	ev_start (EV_A_ (W)w, ++timercnt);	1865	ev_start (EV_A_ (W)w, ++timercnt);
1535	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1866	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1536	timers [timercnt - 1] = w;	1867	timers [timercnt - 1] = (WT)w;
1537	upheap ((WT *)timers, timercnt - 1);	1868	upheap (timers, timercnt - 1);
1538		1869
1539	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/	1870	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
1540	}	1871	}
1541		1872
1542	void	1873	void noinline
1543	ev_timer_stop (EV_P_ ev_timer *w)	1874	ev_timer_stop (EV_P_ ev_timer *w)
1544	{	1875	{
1545	ev_clear_pending (EV_A_ (W)w);	1876	clear_pending (EV_A_ (W)w);
1546	if (expect_false (!ev_is_active (w)))	1877	if (expect_false (!ev_is_active (w)))
1547	return;	1878	return;
1548		1879
1549	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1880	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1550		1881
1551	{	1882	{
1552	int active = ((W)w)->active;	1883	int active = ((W)w)->active;
1553		1884
1554	if (expect_true (--active < --timercnt))	1885	if (expect_true (--active < --timercnt))
1555	{	1886	{
1556	timers [active] = timers [timercnt];	1887	timers [active] = timers [timercnt];
1557	adjustheap ((WT *)timers, timercnt, active);	1888	adjustheap (timers, timercnt, active);
1558	}	1889	}
1559	}	1890	}
1560		1891
1561	((WT)w)->at -= mn_now;	1892	((WT)w)->at -= mn_now;
1562		1893
1563	ev_stop (EV_A_ (W)w);	1894	ev_stop (EV_A_ (W)w);
1564	}	1895	}
1565		1896
1566	void	1897	void noinline
1567	ev_timer_again (EV_P_ ev_timer *w)	1898	ev_timer_again (EV_P_ ev_timer *w)
1568	{	1899	{
1569	if (ev_is_active (w))	1900	if (ev_is_active (w))
1570	{	1901	{
1571	if (w->repeat)	1902	if (w->repeat)
1572	{	1903	{
1573	((WT)w)->at = mn_now + w->repeat;	1904	((WT)w)->at = mn_now + w->repeat;
1574	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1905	adjustheap (timers, timercnt, ((W)w)->active - 1);
1575	}	1906	}
1576	else	1907	else
1577	ev_timer_stop (EV_A_ w);	1908	ev_timer_stop (EV_A_ w);
1578	}	1909	}
1579	else if (w->repeat)	1910	else if (w->repeat)
…		…
1582	ev_timer_start (EV_A_ w);	1913	ev_timer_start (EV_A_ w);
1583	}	1914	}
1584	}	1915	}
1585		1916
1586	#if EV_PERIODIC_ENABLE	1917	#if EV_PERIODIC_ENABLE
1587	void	1918	void noinline
1588	ev_periodic_start (EV_P_ ev_periodic *w)	1919	ev_periodic_start (EV_P_ ev_periodic *w)
1589	{	1920	{
1590	if (expect_false (ev_is_active (w)))	1921	if (expect_false (ev_is_active (w)))
1591	return;	1922	return;
1592		1923
…		…
1594	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1925	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1595	else if (w->interval)	1926	else if (w->interval)
1596	{	1927	{
1597	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1928	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1598	/* this formula differs from the one in periodic_reify because we do not always round up */	1929	/* this formula differs from the one in periodic_reify because we do not always round up */
1599	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1930	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1600	}	1931	}
		1932	else
		1933	((WT)w)->at = w->offset;
1601		1934
1602	ev_start (EV_A_ (W)w, ++periodiccnt);	1935	ev_start (EV_A_ (W)w, ++periodiccnt);
1603	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1936	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1604	periodics [periodiccnt - 1] = w;	1937	periodics [periodiccnt - 1] = (WT)w;
1605	upheap ((WT *)periodics, periodiccnt - 1);	1938	upheap (periodics, periodiccnt - 1);
1606		1939
1607	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/	1940	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
1608	}	1941	}
1609		1942
1610	void	1943	void noinline
1611	ev_periodic_stop (EV_P_ ev_periodic *w)	1944	ev_periodic_stop (EV_P_ ev_periodic *w)
1612	{	1945	{
1613	ev_clear_pending (EV_A_ (W)w);	1946	clear_pending (EV_A_ (W)w);
1614	if (expect_false (!ev_is_active (w)))	1947	if (expect_false (!ev_is_active (w)))
1615	return;	1948	return;
1616		1949
1617	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1950	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1618		1951
1619	{	1952	{
1620	int active = ((W)w)->active;	1953	int active = ((W)w)->active;
1621		1954
1622	if (expect_true (--active < --periodiccnt))	1955	if (expect_true (--active < --periodiccnt))
1623	{	1956	{
1624	periodics [active] = periodics [periodiccnt];	1957	periodics [active] = periodics [periodiccnt];
1625	adjustheap ((WT *)periodics, periodiccnt, active);	1958	adjustheap (periodics, periodiccnt, active);
1626	}	1959	}
1627	}	1960	}
1628		1961
1629	ev_stop (EV_A_ (W)w);	1962	ev_stop (EV_A_ (W)w);
1630	}	1963	}
1631		1964
1632	void	1965	void noinline
1633	ev_periodic_again (EV_P_ ev_periodic *w)	1966	ev_periodic_again (EV_P_ ev_periodic *w)
1634	{	1967	{
1635	/* TODO: use adjustheap and recalculation */	1968	/* TODO: use adjustheap and recalculation */
1636	ev_periodic_stop (EV_A_ w);	1969	ev_periodic_stop (EV_A_ w);
1637	ev_periodic_start (EV_A_ w);	1970	ev_periodic_start (EV_A_ w);
…		…
1640		1973
1641	#ifndef SA_RESTART	1974	#ifndef SA_RESTART
1642	# define SA_RESTART 0	1975	# define SA_RESTART 0
1643	#endif	1976	#endif
1644		1977
1645	void	1978	void noinline
1646	ev_signal_start (EV_P_ ev_signal *w)	1979	ev_signal_start (EV_P_ ev_signal *w)
1647	{	1980	{
1648	#if EV_MULTIPLICITY	1981	#if EV_MULTIPLICITY
1649	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1982	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1650	#endif	1983	#endif
1651	if (expect_false (ev_is_active (w)))	1984	if (expect_false (ev_is_active (w)))
1652	return;	1985	return;
1653		1986
1654	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1987	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1655		1988
		1989	evpipe_init (EV_A);
		1990
		1991	{
		1992	#ifndef _WIN32
		1993	sigset_t full, prev;
		1994	sigfillset (&full);
		1995	sigprocmask (SIG_SETMASK, &full, &prev);
		1996	#endif
		1997
		1998	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1999
		2000	#ifndef _WIN32
		2001	sigprocmask (SIG_SETMASK, &prev, 0);
		2002	#endif
		2003	}
		2004
1656	ev_start (EV_A_ (W)w, 1);	2005	ev_start (EV_A_ (W)w, 1);
1657	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1658	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2006	wlist_add (&signals [w->signum - 1].head, (WL)w);
1659		2007
1660	if (!((WL)w)->next)	2008	if (!((WL)w)->next)
1661	{	2009	{
1662	#if _WIN32	2010	#if _WIN32
1663	signal (w->signum, sighandler);	2011	signal (w->signum, ev_sighandler);
1664	#else	2012	#else
1665	struct sigaction sa;	2013	struct sigaction sa;
1666	sa.sa_handler = sighandler;	2014	sa.sa_handler = ev_sighandler;
1667	sigfillset (&sa.sa_mask);	2015	sigfillset (&sa.sa_mask);
1668	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2016	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1669	sigaction (w->signum, &sa, 0);	2017	sigaction (w->signum, &sa, 0);
1670	#endif	2018	#endif
1671	}	2019	}
1672	}	2020	}
1673		2021
1674	void	2022	void noinline
1675	ev_signal_stop (EV_P_ ev_signal *w)	2023	ev_signal_stop (EV_P_ ev_signal *w)
1676	{	2024	{
1677	ev_clear_pending (EV_A_ (W)w);	2025	clear_pending (EV_A_ (W)w);
1678	if (expect_false (!ev_is_active (w)))	2026	if (expect_false (!ev_is_active (w)))
1679	return;	2027	return;
1680		2028
1681	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2029	wlist_del (&signals [w->signum - 1].head, (WL)w);
1682	ev_stop (EV_A_ (W)w);	2030	ev_stop (EV_A_ (W)w);
1683		2031
1684	if (!signals [w->signum - 1].head)	2032	if (!signals [w->signum - 1].head)
1685	signal (w->signum, SIG_DFL);	2033	signal (w->signum, SIG_DFL);
1686	}	2034	}
…		…
1693	#endif	2041	#endif
1694	if (expect_false (ev_is_active (w)))	2042	if (expect_false (ev_is_active (w)))
1695	return;	2043	return;
1696		2044
1697	ev_start (EV_A_ (W)w, 1);	2045	ev_start (EV_A_ (W)w, 1);
1698	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2046	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1699	}	2047	}
1700		2048
1701	void	2049	void
1702	ev_child_stop (EV_P_ ev_child *w)	2050	ev_child_stop (EV_P_ ev_child *w)
1703	{	2051	{
1704	ev_clear_pending (EV_A_ (W)w);	2052	clear_pending (EV_A_ (W)w);
1705	if (expect_false (!ev_is_active (w)))	2053	if (expect_false (!ev_is_active (w)))
1706	return;	2054	return;
1707		2055
1708	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2056	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1709	ev_stop (EV_A_ (W)w);	2057	ev_stop (EV_A_ (W)w);
1710	}	2058	}
1711		2059
1712	#if EV_STAT_ENABLE	2060	#if EV_STAT_ENABLE
1713		2061
…		…
1945	}	2293	}
1946		2294
1947	void	2295	void
1948	ev_stat_stop (EV_P_ ev_stat *w)	2296	ev_stat_stop (EV_P_ ev_stat *w)
1949	{	2297	{
1950	ev_clear_pending (EV_A_ (W)w);	2298	clear_pending (EV_A_ (W)w);
1951	if (expect_false (!ev_is_active (w)))	2299	if (expect_false (!ev_is_active (w)))
1952	return;	2300	return;
1953		2301
1954	#if EV_USE_INOTIFY	2302	#if EV_USE_INOTIFY
1955	infy_del (EV_A_ w);	2303	infy_del (EV_A_ w);
…		…
1958		2306
1959	ev_stop (EV_A_ (W)w);	2307	ev_stop (EV_A_ (W)w);
1960	}	2308	}
1961	#endif	2309	#endif
1962		2310
		2311	#if EV_IDLE_ENABLE
1963	void	2312	void
1964	ev_idle_start (EV_P_ ev_idle *w)	2313	ev_idle_start (EV_P_ ev_idle *w)
1965	{	2314	{
1966	if (expect_false (ev_is_active (w)))	2315	if (expect_false (ev_is_active (w)))
1967	return;	2316	return;
1968		2317
		2318	pri_adjust (EV_A_ (W)w);
		2319
		2320	{
		2321	int active = ++idlecnt [ABSPRI (w)];
		2322
		2323	++idleall;
1969	ev_start (EV_A_ (W)w, ++idlecnt);	2324	ev_start (EV_A_ (W)w, active);
		2325
1970	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);	2326	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1971	idles [idlecnt - 1] = w;	2327	idles [ABSPRI (w)][active - 1] = w;
		2328	}
1972	}	2329	}
1973		2330
1974	void	2331	void
1975	ev_idle_stop (EV_P_ ev_idle *w)	2332	ev_idle_stop (EV_P_ ev_idle *w)
1976	{	2333	{
1977	ev_clear_pending (EV_A_ (W)w);	2334	clear_pending (EV_A_ (W)w);
1978	if (expect_false (!ev_is_active (w)))	2335	if (expect_false (!ev_is_active (w)))
1979	return;	2336	return;
1980		2337
1981	{	2338	{
1982	int active = ((W)w)->active;	2339	int active = ((W)w)->active;
1983	idles [active - 1] = idles [--idlecnt];	2340
		2341	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
1984	((W)idles [active - 1])->active = active;	2342	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2343
		2344	ev_stop (EV_A_ (W)w);
		2345	--idleall;
1985	}	2346	}
1986
1987	ev_stop (EV_A_ (W)w);
1988	}	2347	}
		2348	#endif
1989		2349
1990	void	2350	void
1991	ev_prepare_start (EV_P_ ev_prepare *w)	2351	ev_prepare_start (EV_P_ ev_prepare *w)
1992	{	2352	{
1993	if (expect_false (ev_is_active (w)))	2353	if (expect_false (ev_is_active (w)))
…		…
1999	}	2359	}
2000		2360
2001	void	2361	void
2002	ev_prepare_stop (EV_P_ ev_prepare *w)	2362	ev_prepare_stop (EV_P_ ev_prepare *w)
2003	{	2363	{
2004	ev_clear_pending (EV_A_ (W)w);	2364	clear_pending (EV_A_ (W)w);
2005	if (expect_false (!ev_is_active (w)))	2365	if (expect_false (!ev_is_active (w)))
2006	return;	2366	return;
2007		2367
2008	{	2368	{
2009	int active = ((W)w)->active;	2369	int active = ((W)w)->active;
…		…
2026	}	2386	}
2027		2387
2028	void	2388	void
2029	ev_check_stop (EV_P_ ev_check *w)	2389	ev_check_stop (EV_P_ ev_check *w)
2030	{	2390	{
2031	ev_clear_pending (EV_A_ (W)w);	2391	clear_pending (EV_A_ (W)w);
2032	if (expect_false (!ev_is_active (w)))	2392	if (expect_false (!ev_is_active (w)))
2033	return;	2393	return;
2034		2394
2035	{	2395	{
2036	int active = ((W)w)->active;	2396	int active = ((W)w)->active;
…		…
2043		2403
2044	#if EV_EMBED_ENABLE	2404	#if EV_EMBED_ENABLE
2045	void noinline	2405	void noinline
2046	ev_embed_sweep (EV_P_ ev_embed *w)	2406	ev_embed_sweep (EV_P_ ev_embed *w)
2047	{	2407	{
2048	ev_loop (w->loop, EVLOOP_NONBLOCK);	2408	ev_loop (w->other, EVLOOP_NONBLOCK);
2049	}	2409	}
2050		2410
2051	static void	2411	static void
2052	embed_cb (EV_P_ ev_io *io, int revents)	2412	embed_io_cb (EV_P_ ev_io *io, int revents)
2053	{	2413	{
2054	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2414	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
2055		2415
2056	if (ev_cb (w))	2416	if (ev_cb (w))
2057	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2417	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2058	else	2418	else
2059	ev_embed_sweep (loop, w);	2419	ev_loop (w->other, EVLOOP_NONBLOCK);
2060	}	2420	}
		2421
		2422	static void
		2423	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2424	{
		2425	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
		2426
		2427	{
		2428	struct ev_loop *loop = w->other;
		2429
		2430	while (fdchangecnt)
		2431	{
		2432	fd_reify (EV_A);
		2433	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2434	}
		2435	}
		2436	}
		2437
		2438	#if 0
		2439	static void
		2440	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2441	{
		2442	ev_idle_stop (EV_A_ idle);
		2443	}
		2444	#endif
2061		2445
2062	void	2446	void
2063	ev_embed_start (EV_P_ ev_embed *w)	2447	ev_embed_start (EV_P_ ev_embed *w)
2064	{	2448	{
2065	if (expect_false (ev_is_active (w)))	2449	if (expect_false (ev_is_active (w)))
2066	return;	2450	return;
2067		2451
2068	{	2452	{
2069	struct ev_loop *loop = w->loop;	2453	struct ev_loop *loop = w->other;
2070	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2454	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2071	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2455	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2072	}	2456	}
2073		2457
2074	ev_set_priority (&w->io, ev_priority (w));	2458	ev_set_priority (&w->io, ev_priority (w));
2075	ev_io_start (EV_A_ &w->io);	2459	ev_io_start (EV_A_ &w->io);
2076		2460
		2461	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2462	ev_set_priority (&w->prepare, EV_MINPRI);
		2463	ev_prepare_start (EV_A_ &w->prepare);
		2464
		2465	/ev_idle_init (&w->idle, e,bed_idle_cb);/
		2466
2077	ev_start (EV_A_ (W)w, 1);	2467	ev_start (EV_A_ (W)w, 1);
2078	}	2468	}
2079		2469
2080	void	2470	void
2081	ev_embed_stop (EV_P_ ev_embed *w)	2471	ev_embed_stop (EV_P_ ev_embed *w)
2082	{	2472	{
2083	ev_clear_pending (EV_A_ (W)w);	2473	clear_pending (EV_A_ (W)w);
2084	if (expect_false (!ev_is_active (w)))	2474	if (expect_false (!ev_is_active (w)))
2085	return;	2475	return;
2086		2476
2087	ev_io_stop (EV_A_ &w->io);	2477	ev_io_stop (EV_A_ &w->io);
		2478	ev_prepare_stop (EV_A_ &w->prepare);
2088		2479
2089	ev_stop (EV_A_ (W)w);	2480	ev_stop (EV_A_ (W)w);
2090	}	2481	}
2091	#endif	2482	#endif
2092		2483
…		…
2103	}	2494	}
2104		2495
2105	void	2496	void
2106	ev_fork_stop (EV_P_ ev_fork *w)	2497	ev_fork_stop (EV_P_ ev_fork *w)
2107	{	2498	{
2108	ev_clear_pending (EV_A_ (W)w);	2499	clear_pending (EV_A_ (W)w);
2109	if (expect_false (!ev_is_active (w)))	2500	if (expect_false (!ev_is_active (w)))
2110	return;	2501	return;
2111		2502
2112	{	2503	{
2113	int active = ((W)w)->active;	2504	int active = ((W)w)->active;
…		…
2117		2508
2118	ev_stop (EV_A_ (W)w);	2509	ev_stop (EV_A_ (W)w);
2119	}	2510	}
2120	#endif	2511	#endif
2121		2512
		2513	#if EV_ASYNC_ENABLE
		2514	void
		2515	ev_async_start (EV_P_ ev_async *w)
		2516	{
		2517	if (expect_false (ev_is_active (w)))
		2518	return;
		2519
		2520	evpipe_init (EV_A);
		2521
		2522	ev_start (EV_A_ (W)w, ++asynccnt);
		2523	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2524	asyncs [asynccnt - 1] = w;
		2525	}
		2526
		2527	void
		2528	ev_async_stop (EV_P_ ev_async *w)
		2529	{
		2530	clear_pending (EV_A_ (W)w);
		2531	if (expect_false (!ev_is_active (w)))
		2532	return;
		2533
		2534	{
		2535	int active = ((W)w)->active;
		2536	asyncs [active - 1] = asyncs [--asynccnt];
		2537	((W)asyncs [active - 1])->active = active;
		2538	}
		2539
		2540	ev_stop (EV_A_ (W)w);
		2541	}
		2542
		2543	void
		2544	ev_async_send (EV_P_ ev_async *w)
		2545	{
		2546	w->sent = 1;
		2547	evpipe_write (EV_A_ &gotasync);
		2548	}
		2549	#endif
		2550
2122	/*****************************************************************************/	2551	/*****************************************************************************/
2123		2552
2124	struct ev_once	2553	struct ev_once
2125	{	2554	{
2126	ev_io io;	2555	ev_io io;
…		…
2181	ev_timer_set (&once->to, timeout, 0.);	2610	ev_timer_set (&once->to, timeout, 0.);
2182	ev_timer_start (EV_A_ &once->to);	2611	ev_timer_start (EV_A_ &once->to);
2183	}	2612	}
2184	}	2613	}
2185		2614
		2615	#if EV_MULTIPLICITY
		2616	#include "ev_wrap.h"
		2617	#endif
		2618
2186	#ifdef __cplusplus	2619	#ifdef __cplusplus
2187	}	2620	}
2188	#endif	2621	#endif
2189		2622

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Comparing libev/ev.c (file contents): Revision 1.157 by root, Wed Nov 28 20:58:32 2007 UTC vs. Revision 1.220 by root, Sun Apr 6 09:53:17 2008 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.157 by root, Wed Nov 28 20:58:32 2007 UTC vs.
Revision 1.220 by root, Sun Apr 6 09:53:17 2008 UTC