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

Comparing libev/ev.c (file contents):
Revision 1.159 by root, Sat Dec 1 19:48:36 2007 UTC vs.
Revision 1.222 by root, Sun Apr 6 12:45:58 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	271	#if EV_USE_EVENTFD
212	# define EV_USE_INOTIFY 0	272	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		273	# include <stdint.h>
		274	# ifdef __cplusplus
		275	extern "C" {
213	#endif	276	# endif
214		277	int eventfd (unsigned int initval, int flags);
215	#if EV_USE_INOTIFY	278	# ifdef __cplusplus
216	# include <sys/inotify.h>	279	}
		280	# endif
217	#endif	281	#endif
218		282
219	/**/	283	/**/
		284
		285	/*
		286	* This is used to avoid floating point rounding problems.
		287	* It is added to ev_rt_now when scheduling periodics
		288	* to ensure progress, time-wise, even when rounding
		289	* errors are against us.
		290	* This value is good at least till the year 4000.
		291	* Better solutions welcome.
		292	*/
		293	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
220		294
221	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	295	#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) */	296	#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 */	297	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds, TODO */
224		298
225	#if __GNUC__ >= 3	299	#if __GNUC__ >= 4
226	# define expect(expr,value) __builtin_expect ((expr),(value))	300	# 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))	301	# 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	302	#else
236	# define expect(expr,value) (expr)	303	# define expect(expr,value) (expr)
237	# define inline_speed static
238	# define inline_size static
239	# define noinline	304	# define noinline
		305	# if __STDC_VERSION__ < 199901L
		306	# define inline
		307	# endif
240	#endif	308	#endif
241		309
242	#define expect_false(expr) expect ((expr) != 0, 0)	310	#define expect_false(expr) expect ((expr) != 0, 0)
243	#define expect_true(expr) expect ((expr) != 0, 1)	311	#define expect_true(expr) expect ((expr) != 0, 1)
		312	#define inline_size static inline
		313
		314	#if EV_MINIMAL
		315	# define inline_speed static noinline
		316	#else
		317	# define inline_speed static inline
		318	#endif
244		319
245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	320	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
246	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	321	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
247		322
248	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	323	#define EMPTY /* required for microsofts broken pseudo-c compiler */
249	#define EMPTY2(a,b) /* used to suppress some warnings */	324	#define EMPTY2(a,b) /* used to suppress some warnings */
250		325
251	typedef ev_watcher *W;	326	typedef ev_watcher *W;
252	typedef ev_watcher_list *WL;	327	typedef ev_watcher_list *WL;
253	typedef ev_watcher_time *WT;	328	typedef ev_watcher_time *WT;
254		329
		330	#if EV_USE_MONOTONIC
		331	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		332	/* giving it a reasonably high chance of working on typical architetcures */
255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	333	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		334	#endif
256		335
257	#ifdef _WIN32	336	#ifdef _WIN32
258	# include "ev_win32.c"	337	# include "ev_win32.c"
259	#endif	338	#endif
260		339
…		…
396	{	475	{
397	return ev_rt_now;	476	return ev_rt_now;
398	}	477	}
399	#endif	478	#endif
400		479
401	#define array_roundsize(type,n) (((n) \| 4) & ~3)	480	void
		481	ev_sleep (ev_tstamp delay)
		482	{
		483	if (delay > 0.)
		484	{
		485	#if EV_USE_NANOSLEEP
		486	struct timespec ts;
		487
		488	ts.tv_sec = (time_t)delay;
		489	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		490
		491	nanosleep (&ts, 0);
		492	#elif defined(_WIN32)
		493	Sleep ((unsigned long)(delay * 1e3));
		494	#else
		495	struct timeval tv;
		496
		497	tv.tv_sec = (time_t)delay;
		498	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		499
		500	select (0, 0, 0, 0, &tv);
		501	#endif
		502	}
		503	}
		504
		505	/*****************************************************************************/
		506
		507	int inline_size
		508	array_nextsize (int elem, int cur, int cnt)
		509	{
		510	int ncur = cur + 1;
		511
		512	do
		513	ncur <<= 1;
		514	while (cnt > ncur);
		515
		516	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		517	if (elem * ncur > 4096)
		518	{
		519	ncur *= elem;
		520	ncur = (ncur + elem + 4095 + sizeof (void ) 4) & ~4095;
		521	ncur = ncur - sizeof (void ) 4;
		522	ncur /= elem;
		523	}
		524
		525	return ncur;
		526	}
		527
		528	static noinline void *
		529	array_realloc (int elem, void base, int cur, int cnt)
		530	{
		531	cur = array_nextsize (elem, cur, cnt);
		532	return ev_realloc (base, elem * *cur);
		533	}
402		534
403	#define array_needsize(type,base,cur,cnt,init) \	535	#define array_needsize(type,base,cur,cnt,init) \
404	if (expect_false ((cnt) > cur)) \	536	if (expect_false ((cnt) > (cur))) \
405	{ \	537	{ \
406	int newcnt = cur; \	538	int ocur_ = (cur); \
407	do \	539	(base) = (type *)array_realloc \
408	{ \	540	(sizeof (type), (base), &(cur), (cnt)); \
409	newcnt = array_roundsize (type, newcnt << 1); \	541	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	}	542	}
417		543
		544	#if 0
418	#define array_slim(type,stem) \	545	#define array_slim(type,stem) \
419	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	546	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
420	{ \	547	{ \
421	stem ## max = array_roundsize (stem ## cnt >> 1); \	548	stem ## max = array_roundsize (stem ## cnt >> 1); \
422	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\	549	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
423	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	550	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
424	}	551	}
		552	#endif
425		553
426	#define array_free(stem, idx) \	554	#define array_free(stem, idx) \
427	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	555	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
428		556
429	/*****************************************************************************/	557	/*****************************************************************************/
430		558
431	void noinline	559	void noinline
432	ev_feed_event (EV_P_ void *w, int revents)	560	ev_feed_event (EV_P_ void *w, int revents)
433	{	561	{
434	W w_ = (W)w;	562	W w_ = (W)w;
		563	int pri = ABSPRI (w_);
435		564
436	if (expect_false (w_->pending))	565	if (expect_false (w_->pending))
		566	pendings [pri][w_->pending - 1].events \|= revents;
		567	else
437	{	568	{
		569	w_->pending = ++pendingcnt [pri];
		570	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		571	pendings [pri][w_->pending - 1].w = w_;
438	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;	572	pendings [pri][w_->pending - 1].events = revents;
439	return;
440	}	573	}
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	}	574	}
447		575
448	void inline_size	576	void inline_speed
449	queue_events (EV_P_ W *events, int eventcnt, int type)	577	queue_events (EV_P_ W *events, int eventcnt, int type)
450	{	578	{
451	int i;	579	int i;
452		580
453	for (i = 0; i < eventcnt; ++i)	581	for (i = 0; i < eventcnt; ++i)
…		…
485	}	613	}
486		614
487	void	615	void
488	ev_feed_fd_event (EV_P_ int fd, int revents)	616	ev_feed_fd_event (EV_P_ int fd, int revents)
489	{	617	{
		618	if (fd >= 0 && fd < anfdmax)
490	fd_event (EV_A_ fd, revents);	619	fd_event (EV_A_ fd, revents);
491	}	620	}
492		621
493	void inline_size	622	void inline_size
494	fd_reify (EV_P)	623	fd_reify (EV_P)
495	{	624	{
…		…
499	{	628	{
500	int fd = fdchanges [i];	629	int fd = fdchanges [i];
501	ANFD *anfd = anfds + fd;	630	ANFD *anfd = anfds + fd;
502	ev_io *w;	631	ev_io *w;
503		632
504	int events = 0;	633	unsigned char events = 0;
505		634
506	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	635	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
507	events \|= w->events;	636	events \|= (unsigned char)w->events;
508		637
509	#if EV_SELECT_IS_WINSOCKET	638	#if EV_SELECT_IS_WINSOCKET
510	if (events)	639	if (events)
511	{	640	{
512	unsigned long argp;	641	unsigned long argp;
		642	#ifdef EV_FD_TO_WIN32_HANDLE
		643	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		644	#else
513	anfd->handle = _get_osfhandle (fd);	645	anfd->handle = _get_osfhandle (fd);
		646	#endif
514	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	647	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
515	}	648	}
516	#endif	649	#endif
517		650
		651	{
		652	unsigned char o_events = anfd->events;
		653	unsigned char o_reify = anfd->reify;
		654
518	anfd->reify = 0;	655	anfd->reify = 0;
519
520	backend_modify (EV_A_ fd, anfd->events, events);
521	anfd->events = events;	656	anfd->events = events;
		657
		658	if (o_events != events \|\| o_reify & EV_IOFDSET)
		659	backend_modify (EV_A_ fd, o_events, events);
		660	}
522	}	661	}
523		662
524	fdchangecnt = 0;	663	fdchangecnt = 0;
525	}	664	}
526		665
527	void inline_size	666	void inline_size
528	fd_change (EV_P_ int fd)	667	fd_change (EV_P_ int fd, int flags)
529	{	668	{
530	if (expect_false (anfds [fd].reify))	669	unsigned char reify = anfds [fd].reify;
531	return;
532
533	anfds [fd].reify = 1;	670	anfds [fd].reify \|= flags;
534		671
		672	if (expect_true (!reify))
		673	{
535	++fdchangecnt;	674	++fdchangecnt;
536	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	675	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
537	fdchanges [fdchangecnt - 1] = fd;	676	fdchanges [fdchangecnt - 1] = fd;
		677	}
538	}	678	}
539		679
540	void inline_speed	680	void inline_speed
541	fd_kill (EV_P_ int fd)	681	fd_kill (EV_P_ int fd)
542	{	682	{
…		…
593		733
594	for (fd = 0; fd < anfdmax; ++fd)	734	for (fd = 0; fd < anfdmax; ++fd)
595	if (anfds [fd].events)	735	if (anfds [fd].events)
596	{	736	{
597	anfds [fd].events = 0;	737	anfds [fd].events = 0;
598	fd_change (EV_A_ fd);	738	fd_change (EV_A_ fd, EV_IOFDSET \| 1);
599	}	739	}
600	}	740	}
601		741
602	/*****************************************************************************/	742	/*****************************************************************************/
603		743
604	void inline_speed	744	void inline_speed
605	upheap (WT *heap, int k)	745	upheap (WT *heap, int k)
606	{	746	{
607	WT w = heap [k];	747	WT w = heap [k];
608		748
609	while (k && heap [k >> 1]->at > w->at)	749	while (k)
610	{	750	{
		751	int p = (k - 1) >> 1;
		752
		753	if (heap [p]->at <= w->at)
		754	break;
		755
611	heap [k] = heap [k >> 1];	756	heap [k] = heap [p];
612	((W)heap [k])->active = k + 1;	757	((W)heap [k])->active = k + 1;
613	k >>= 1;	758	k = p;
614	}	759	}
615		760
616	heap [k] = w;	761	heap [k] = w;
617	((W)heap [k])->active = k + 1;	762	((W)heap [k])->active = k + 1;
618
619	}	763	}
620		764
621	void inline_speed	765	void inline_speed
622	downheap (WT *heap, int N, int k)	766	downheap (WT *heap, int N, int k)
623	{	767	{
624	WT w = heap [k];	768	WT w = heap [k];
625		769
626	while (k < (N >> 1))	770	for (;;)
627	{	771	{
628	int j = k << 1;	772	int c = (k << 1) + 1;
629		773
630	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	774	if (c >= N)
631	++j;
632
633	if (w->at <= heap [j]->at)
634	break;	775	break;
635		776
		777	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		778	? 1 : 0;
		779
		780	if (w->at <= heap [c]->at)
		781	break;
		782
636	heap [k] = heap [j];	783	heap [k] = heap [c];
637	((W)heap [k])->active = k + 1;	784	((W)heap [k])->active = k + 1;
		785
638	k = j;	786	k = c;
639	}	787	}
640		788
641	heap [k] = w;	789	heap [k] = w;
642	((W)heap [k])->active = k + 1;	790	((W)heap [k])->active = k + 1;
643	}	791	}
…		…
652	/*****************************************************************************/	800	/*****************************************************************************/
653		801
654	typedef struct	802	typedef struct
655	{	803	{
656	WL head;	804	WL head;
657	sig_atomic_t volatile gotsig;	805	EV_ATOMIC_T gotsig;
658	} ANSIG;	806	} ANSIG;
659		807
660	static ANSIG *signals;	808	static ANSIG *signals;
661	static int signalmax;	809	static int signalmax;
662		810
663	static int sigpipe [2];	811	static EV_ATOMIC_T gotsig;
664	static sig_atomic_t volatile gotsig;
665	static ev_io sigev;
666		812
667	void inline_size	813	void inline_size
668	signals_init (ANSIG *base, int count)	814	signals_init (ANSIG *base, int count)
669	{	815	{
670	while (count--)	816	while (count--)
…		…
674		820
675	++base;	821	++base;
676	}	822	}
677	}	823	}
678		824
679	static void	825	/*****************************************************************************/
680	sighandler (int signum)
681	{
682	#if _WIN32
683	signal (signum, sighandler);
684	#endif
685		826
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	827	void inline_speed
731	fd_intern (int fd)	828	fd_intern (int fd)
732	{	829	{
733	#ifdef _WIN32	830	#ifdef _WIN32
734	int arg = 1;	831	int arg = 1;
735	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	832	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
738	fcntl (fd, F_SETFL, O_NONBLOCK);	835	fcntl (fd, F_SETFL, O_NONBLOCK);
739	#endif	836	#endif
740	}	837	}
741		838
742	static void noinline	839	static void noinline
743	siginit (EV_P)	840	evpipe_init (EV_P)
744	{	841	{
		842	if (!ev_is_active (&pipeev))
		843	{
		844	#if EV_USE_EVENTFD
		845	if ((evfd = eventfd (0, 0)) >= 0)
		846	{
		847	evpipe [0] = -1;
		848	fd_intern (evfd);
		849	ev_io_set (&pipeev, evfd, EV_READ);
		850	}
		851	else
		852	#endif
		853	{
		854	while (pipe (evpipe))
		855	syserr ("(libev) error creating signal/async pipe");
		856
745	fd_intern (sigpipe [0]);	857	fd_intern (evpipe [0]);
746	fd_intern (sigpipe [1]);	858	fd_intern (evpipe [1]);
		859	ev_io_set (&pipeev, evpipe [0], EV_READ);
		860	}
747		861
748	ev_io_set (&sigev, sigpipe [0], EV_READ);
749	ev_io_start (EV_A_ &sigev);	862	ev_io_start (EV_A_ &pipeev);
750	ev_unref (EV_A); /* child watcher should not keep loop alive */	863	ev_unref (EV_A); /* watcher should not keep loop alive */
		864	}
		865	}
		866
		867	void inline_size
		868	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		869	{
		870	if (!*flag)
		871	{
		872	int old_errno = errno; /* save errno because write might clobber it */
		873
		874	*flag = 1;
		875
		876	#if EV_USE_EVENTFD
		877	if (evfd >= 0)
		878	{
		879	uint64_t counter = 1;
		880	write (evfd, &counter, sizeof (uint64_t));
		881	}
		882	else
		883	#endif
		884	write (evpipe [1], &old_errno, 1);
		885
		886	errno = old_errno;
		887	}
		888	}
		889
		890	static void
		891	pipecb (EV_P_ ev_io *iow, int revents)
		892	{
		893	#if EV_USE_EVENTFD
		894	if (evfd >= 0)
		895	{
		896	uint64_t counter = 1;
		897	read (evfd, &counter, sizeof (uint64_t));
		898	}
		899	else
		900	#endif
		901	{
		902	char dummy;
		903	read (evpipe [0], &dummy, 1);
		904	}
		905
		906	if (gotsig && ev_is_default_loop (EV_A))
		907	{
		908	int signum;
		909	gotsig = 0;
		910
		911	for (signum = signalmax; signum--; )
		912	if (signals [signum].gotsig)
		913	ev_feed_signal_event (EV_A_ signum + 1);
		914	}
		915
		916	#if EV_ASYNC_ENABLE
		917	if (gotasync)
		918	{
		919	int i;
		920	gotasync = 0;
		921
		922	for (i = asynccnt; i--; )
		923	if (asyncs [i]->sent)
		924	{
		925	asyncs [i]->sent = 0;
		926	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		927	}
		928	}
		929	#endif
751	}	930	}
752		931
753	/*****************************************************************************/	932	/*****************************************************************************/
754		933
		934	static void
		935	ev_sighandler (int signum)
		936	{
		937	#if EV_MULTIPLICITY
		938	struct ev_loop *loop = &default_loop_struct;
		939	#endif
		940
		941	#if _WIN32
		942	signal (signum, ev_sighandler);
		943	#endif
		944
		945	signals [signum - 1].gotsig = 1;
		946	evpipe_write (EV_A_ &gotsig);
		947	}
		948
		949	void noinline
		950	ev_feed_signal_event (EV_P_ int signum)
		951	{
		952	WL w;
		953
		954	#if EV_MULTIPLICITY
		955	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		956	#endif
		957
		958	--signum;
		959
		960	if (signum < 0 \|\| signum >= signalmax)
		961	return;
		962
		963	signals [signum].gotsig = 0;
		964
		965	for (w = signals [signum].head; w; w = w->next)
		966	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		967	}
		968
		969	/*****************************************************************************/
		970
755	static ev_child *childs [EV_PID_HASHSIZE];	971	static WL childs [EV_PID_HASHSIZE];
756		972
757	#ifndef _WIN32	973	#ifndef _WIN32
758		974
759	static ev_signal childev;	975	static ev_signal childev;
760		976
		977	#ifndef WIFCONTINUED
		978	# define WIFCONTINUED(status) 0
		979	#endif
		980
761	void inline_speed	981	void inline_speed
762	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	982	child_reap (EV_P_ int chain, int pid, int status)
763	{	983	{
764	ev_child *w;	984	ev_child *w;
		985	int traced = WIFSTOPPED (status) \|\| WIFCONTINUED (status);
765		986
766	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	987	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
		988	{
767	if (w->pid == pid \|\| !w->pid)	989	if ((w->pid == pid \|\| !w->pid)
		990	&& (!traced \|\| (w->flags & 1)))
768	{	991	{
769	ev_priority (w) = ev_priority (sw); /* need to do it now */	992	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;	993	w->rpid = pid;
771	w->rstatus = status;	994	w->rstatus = status;
772	ev_feed_event (EV_A_ (W)w, EV_CHILD);	995	ev_feed_event (EV_A_ (W)w, EV_CHILD);
773	}	996	}
		997	}
774	}	998	}
775		999
776	#ifndef WCONTINUED	1000	#ifndef WCONTINUED
777	# define WCONTINUED 0	1001	# define WCONTINUED 0
778	#endif	1002	#endif
…		…
787	if (!WCONTINUED	1011	if (!WCONTINUED
788	\|\| errno != EINVAL	1012	\|\| errno != EINVAL
789	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))	1013	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))
790	return;	1014	return;
791		1015
792	/* make sure we are called again until all childs have been reaped */	1016	/* 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 */	1017	/* 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);	1018	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
795		1019
796	child_reap (EV_A_ sw, pid, pid, status);	1020	child_reap (EV_A_ pid, pid, status);
797	if (EV_PID_HASHSIZE > 1)	1021	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 */	1022	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
799	}	1023	}
800		1024
801	#endif	1025	#endif
802		1026
803	/*****************************************************************************/	1027	/*****************************************************************************/
…		…
875	}	1099	}
876		1100
877	unsigned int	1101	unsigned int
878	ev_embeddable_backends (void)	1102	ev_embeddable_backends (void)
879	{	1103	{
880	return EVBACKEND_EPOLL	1104	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
881	\| EVBACKEND_KQUEUE	1105
882	\| EVBACKEND_PORT;	1106	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1107	/* please fix it and tell me how to detect the fix */
		1108	flags &= ~EVBACKEND_EPOLL;
		1109
		1110	return flags;
883	}	1111	}
884		1112
885	unsigned int	1113	unsigned int
886	ev_backend (EV_P)	1114	ev_backend (EV_P)
887	{	1115	{
888	return backend;	1116	return backend;
		1117	}
		1118
		1119	unsigned int
		1120	ev_loop_count (EV_P)
		1121	{
		1122	return loop_count;
		1123	}
		1124
		1125	void
		1126	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1127	{
		1128	io_blocktime = interval;
		1129	}
		1130
		1131	void
		1132	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1133	{
		1134	timeout_blocktime = interval;
889	}	1135	}
890		1136
891	static void noinline	1137	static void noinline
892	loop_init (EV_P_ unsigned int flags)	1138	loop_init (EV_P_ unsigned int flags)
893	{	1139	{
…		…
899	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1145	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
900	have_monotonic = 1;	1146	have_monotonic = 1;
901	}	1147	}
902	#endif	1148	#endif
903		1149
904	ev_rt_now = ev_time ();	1150	ev_rt_now = ev_time ();
905	mn_now = get_clock ();	1151	mn_now = get_clock ();
906	now_floor = mn_now;	1152	now_floor = mn_now;
907	rtmn_diff = ev_rt_now - mn_now;	1153	rtmn_diff = ev_rt_now - mn_now;
		1154
		1155	io_blocktime = 0.;
		1156	timeout_blocktime = 0.;
		1157	backend = 0;
		1158	backend_fd = -1;
		1159	gotasync = 0;
		1160	#if EV_USE_INOTIFY
		1161	fs_fd = -2;
		1162	#endif
908		1163
909	/* pid check not overridable via env */	1164	/* pid check not overridable via env */
910	#ifndef _WIN32	1165	#ifndef _WIN32
911	if (flags & EVFLAG_FORKCHECK)	1166	if (flags & EVFLAG_FORKCHECK)
912	curpid = getpid ();	1167	curpid = getpid ();
…		…
918	flags = atoi (getenv ("LIBEV_FLAGS"));	1173	flags = atoi (getenv ("LIBEV_FLAGS"));
919		1174
920	if (!(flags & 0x0000ffffUL))	1175	if (!(flags & 0x0000ffffUL))
921	flags \|= ev_recommended_backends ();	1176	flags \|= ev_recommended_backends ();
922		1177
923	backend = 0;
924	backend_fd = -1;
925	#if EV_USE_INOTIFY
926	fs_fd = -2;
927	#endif
928
929	#if EV_USE_PORT	1178	#if EV_USE_PORT
930	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1179	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
931	#endif	1180	#endif
932	#if EV_USE_KQUEUE	1181	#if EV_USE_KQUEUE
933	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1182	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
940	#endif	1189	#endif
941	#if EV_USE_SELECT	1190	#if EV_USE_SELECT
942	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1191	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
943	#endif	1192	#endif
944		1193
945	ev_init (&sigev, sigcb);	1194	ev_init (&pipeev, pipecb);
946	ev_set_priority (&sigev, EV_MAXPRI);	1195	ev_set_priority (&pipeev, EV_MAXPRI);
947	}	1196	}
948	}	1197	}
949		1198
950	static void noinline	1199	static void noinline
951	loop_destroy (EV_P)	1200	loop_destroy (EV_P)
952	{	1201	{
953	int i;	1202	int i;
		1203
		1204	if (ev_is_active (&pipeev))
		1205	{
		1206	ev_ref (EV_A); /* signal watcher */
		1207	ev_io_stop (EV_A_ &pipeev);
		1208
		1209	#if EV_USE_EVENTFD
		1210	if (evfd >= 0)
		1211	close (evfd);
		1212	#endif
		1213
		1214	if (evpipe [0] >= 0)
		1215	{
		1216	close (evpipe [0]);
		1217	close (evpipe [1]);
		1218	}
		1219	}
954		1220
955	#if EV_USE_INOTIFY	1221	#if EV_USE_INOTIFY
956	if (fs_fd >= 0)	1222	if (fs_fd >= 0)
957	close (fs_fd);	1223	close (fs_fd);
958	#endif	1224	#endif
…		…
975	#if EV_USE_SELECT	1241	#if EV_USE_SELECT
976	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1242	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
977	#endif	1243	#endif
978		1244
979	for (i = NUMPRI; i--; )	1245	for (i = NUMPRI; i--; )
		1246	{
980	array_free (pending, [i]);	1247	array_free (pending, [i]);
		1248	#if EV_IDLE_ENABLE
		1249	array_free (idle, [i]);
		1250	#endif
		1251	}
		1252
		1253	ev_free (anfds); anfdmax = 0;
981		1254
982	/* have to use the microsoft-never-gets-it-right macro */	1255	/* have to use the microsoft-never-gets-it-right macro */
983	array_free (fdchange, EMPTY0);	1256	array_free (fdchange, EMPTY);
984	array_free (timer, EMPTY0);	1257	array_free (timer, EMPTY);
985	#if EV_PERIODIC_ENABLE	1258	#if EV_PERIODIC_ENABLE
986	array_free (periodic, EMPTY0);	1259	array_free (periodic, EMPTY);
987	#endif	1260	#endif
		1261	#if EV_FORK_ENABLE
988	array_free (idle, EMPTY0);	1262	array_free (fork, EMPTY);
		1263	#endif
989	array_free (prepare, EMPTY0);	1264	array_free (prepare, EMPTY);
990	array_free (check, EMPTY0);	1265	array_free (check, EMPTY);
		1266	#if EV_ASYNC_ENABLE
		1267	array_free (async, EMPTY);
		1268	#endif
991		1269
992	backend = 0;	1270	backend = 0;
993	}	1271	}
994		1272
995	void inline_size infy_fork (EV_P);	1273	void inline_size infy_fork (EV_P);
…		…
1008	#endif	1286	#endif
1009	#if EV_USE_INOTIFY	1287	#if EV_USE_INOTIFY
1010	infy_fork (EV_A);	1288	infy_fork (EV_A);
1011	#endif	1289	#endif
1012		1290
1013	if (ev_is_active (&sigev))	1291	if (ev_is_active (&pipeev))
1014	{	1292	{
1015	/* default loop */	1293	/* this "locks" the handlers against writing to the pipe */
		1294	/* while we modify the fd vars */
		1295	gotsig = 1;
		1296	#if EV_ASYNC_ENABLE
		1297	gotasync = 1;
		1298	#endif
1016		1299
1017	ev_ref (EV_A);	1300	ev_ref (EV_A);
1018	ev_io_stop (EV_A_ &sigev);	1301	ev_io_stop (EV_A_ &pipeev);
		1302
		1303	#if EV_USE_EVENTFD
		1304	if (evfd >= 0)
		1305	close (evfd);
		1306	#endif
		1307
		1308	if (evpipe [0] >= 0)
		1309	{
1019	close (sigpipe [0]);	1310	close (evpipe [0]);
1020	close (sigpipe [1]);	1311	close (evpipe [1]);
		1312	}
1021		1313
1022	while (pipe (sigpipe))
1023	syserr ("(libev) error creating pipe");
1024
1025	siginit (EV_A);	1314	evpipe_init (EV_A);
		1315	/* now iterate over everything, in case we missed something */
		1316	pipecb (EV_A_ &pipeev, EV_READ);
1026	}	1317	}
1027		1318
1028	postfork = 0;	1319	postfork = 0;
1029	}	1320	}
1030		1321
…		…
1052	}	1343	}
1053		1344
1054	void	1345	void
1055	ev_loop_fork (EV_P)	1346	ev_loop_fork (EV_P)
1056	{	1347	{
1057	postfork = 1;	1348	postfork = 1; /* must be in line with ev_default_fork */
1058	}	1349	}
1059		1350
1060	#endif	1351	#endif
1061		1352
1062	#if EV_MULTIPLICITY	1353	#if EV_MULTIPLICITY
…		…
1065	#else	1356	#else
1066	int	1357	int
1067	ev_default_loop (unsigned int flags)	1358	ev_default_loop (unsigned int flags)
1068	#endif	1359	#endif
1069	{	1360	{
1070	if (sigpipe [0] == sigpipe [1])
1071	if (pipe (sigpipe))
1072	return 0;
1073
1074	if (!ev_default_loop_ptr)	1361	if (!ev_default_loop_ptr)
1075	{	1362	{
1076	#if EV_MULTIPLICITY	1363	#if EV_MULTIPLICITY
1077	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1364	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1078	#else	1365	#else
…		…
1081		1368
1082	loop_init (EV_A_ flags);	1369	loop_init (EV_A_ flags);
1083		1370
1084	if (ev_backend (EV_A))	1371	if (ev_backend (EV_A))
1085	{	1372	{
1086	siginit (EV_A);
1087
1088	#ifndef _WIN32	1373	#ifndef _WIN32
1089	ev_signal_init (&childev, childcb, SIGCHLD);	1374	ev_signal_init (&childev, childcb, SIGCHLD);
1090	ev_set_priority (&childev, EV_MAXPRI);	1375	ev_set_priority (&childev, EV_MAXPRI);
1091	ev_signal_start (EV_A_ &childev);	1376	ev_signal_start (EV_A_ &childev);
1092	ev_unref (EV_A); /* child watcher should not keep loop alive */	1377	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1109	#ifndef _WIN32	1394	#ifndef _WIN32
1110	ev_ref (EV_A); /* child watcher */	1395	ev_ref (EV_A); /* child watcher */
1111	ev_signal_stop (EV_A_ &childev);	1396	ev_signal_stop (EV_A_ &childev);
1112	#endif	1397	#endif
1113		1398
1114	ev_ref (EV_A); /* signal watcher */
1115	ev_io_stop (EV_A_ &sigev);
1116
1117	close (sigpipe [0]); sigpipe [0] = 0;
1118	close (sigpipe [1]); sigpipe [1] = 0;
1119
1120	loop_destroy (EV_A);	1399	loop_destroy (EV_A);
1121	}	1400	}
1122		1401
1123	void	1402	void
1124	ev_default_fork (void)	1403	ev_default_fork (void)
…		…
1126	#if EV_MULTIPLICITY	1405	#if EV_MULTIPLICITY
1127	struct ev_loop *loop = ev_default_loop_ptr;	1406	struct ev_loop *loop = ev_default_loop_ptr;
1128	#endif	1407	#endif
1129		1408
1130	if (backend)	1409	if (backend)
1131	postfork = 1;	1410	postfork = 1; /* must be in line with ev_loop_fork */
1132	}	1411	}
1133		1412
1134	/*****************************************************************************/	1413	/*****************************************************************************/
1135		1414
1136	int inline_size	1415	void
1137	any_pending (EV_P)	1416	ev_invoke (EV_P_ void *w, int revents)
1138	{	1417	{
1139	int pri;	1418	EV_CB_INVOKE ((W)w, revents);
1140
1141	for (pri = NUMPRI; pri--; )
1142	if (pendingcnt [pri])
1143	return 1;
1144
1145	return 0;
1146	}	1419	}
1147		1420
1148	void inline_speed	1421	void inline_speed
1149	call_pending (EV_P)	1422	call_pending (EV_P)
1150	{	1423	{
…		…
1168	void inline_size	1441	void inline_size
1169	timers_reify (EV_P)	1442	timers_reify (EV_P)
1170	{	1443	{
1171	while (timercnt && ((WT)timers [0])->at <= mn_now)	1444	while (timercnt && ((WT)timers [0])->at <= mn_now)
1172	{	1445	{
1173	ev_timer *w = timers [0];	1446	ev_timer w = (ev_timer )timers [0];
1174		1447
1175	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/	1448	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1176		1449
1177	/* first reschedule or stop timer */	1450	/* first reschedule or stop timer */
1178	if (w->repeat)	1451	if (w->repeat)
…		…
1181		1454
1182	((WT)w)->at += w->repeat;	1455	((WT)w)->at += w->repeat;
1183	if (((WT)w)->at < mn_now)	1456	if (((WT)w)->at < mn_now)
1184	((WT)w)->at = mn_now;	1457	((WT)w)->at = mn_now;
1185		1458
1186	downheap ((WT *)timers, timercnt, 0);	1459	downheap (timers, timercnt, 0);
1187	}	1460	}
1188	else	1461	else
1189	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1462	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1190		1463
1191	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1464	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1196	void inline_size	1469	void inline_size
1197	periodics_reify (EV_P)	1470	periodics_reify (EV_P)
1198	{	1471	{
1199	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1472	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1200	{	1473	{
1201	ev_periodic *w = periodics [0];	1474	ev_periodic w = (ev_periodic )periodics [0];
1202		1475
1203	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/	1476	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1204		1477
1205	/* first reschedule or stop timer */	1478	/* first reschedule or stop timer */
1206	if (w->reschedule_cb)	1479	if (w->reschedule_cb)
1207	{	1480	{
1208	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1481	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1209	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1482	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1210	downheap ((WT *)periodics, periodiccnt, 0);	1483	downheap (periodics, periodiccnt, 0);
1211	}	1484	}
1212	else if (w->interval)	1485	else if (w->interval)
1213	{	1486	{
1214	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1487	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1488	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1215	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1489	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1216	downheap ((WT *)periodics, periodiccnt, 0);	1490	downheap (periodics, periodiccnt, 0);
1217	}	1491	}
1218	else	1492	else
1219	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1493	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1220		1494
1221	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1495	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1228	int i;	1502	int i;
1229		1503
1230	/* adjust periodics after time jump */	1504	/* adjust periodics after time jump */
1231	for (i = 0; i < periodiccnt; ++i)	1505	for (i = 0; i < periodiccnt; ++i)
1232	{	1506	{
1233	ev_periodic *w = periodics [i];	1507	ev_periodic w = (ev_periodic )periodics [i];
1234		1508
1235	if (w->reschedule_cb)	1509	if (w->reschedule_cb)
1236	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1510	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1237	else if (w->interval)	1511	else if (w->interval)
1238	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1512	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1239	}	1513	}
1240		1514
1241	/* now rebuild the heap */	1515	/* now rebuild the heap */
1242	for (i = periodiccnt >> 1; i--; )	1516	for (i = periodiccnt >> 1; i--; )
1243	downheap ((WT *)periodics, periodiccnt, i);	1517	downheap (periodics, periodiccnt, i);
1244	}	1518	}
1245	#endif	1519	#endif
1246		1520
		1521	#if EV_IDLE_ENABLE
1247	int inline_size	1522	void inline_size
1248	time_update_monotonic (EV_P)	1523	idle_reify (EV_P)
1249	{	1524	{
		1525	if (expect_false (idleall))
		1526	{
		1527	int pri;
		1528
		1529	for (pri = NUMPRI; pri--; )
		1530	{
		1531	if (pendingcnt [pri])
		1532	break;
		1533
		1534	if (idlecnt [pri])
		1535	{
		1536	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1537	break;
		1538	}
		1539	}
		1540	}
		1541	}
		1542	#endif
		1543
		1544	void inline_speed
		1545	time_update (EV_P_ ev_tstamp max_block)
		1546	{
		1547	int i;
		1548
		1549	#if EV_USE_MONOTONIC
		1550	if (expect_true (have_monotonic))
		1551	{
		1552	ev_tstamp odiff = rtmn_diff;
		1553
1250	mn_now = get_clock ();	1554	mn_now = get_clock ();
1251		1555
		1556	/* only fetch the realtime clock every 0.5MIN_TIMEJUMP seconds /
		1557	/* interpolate in the meantime */
1252	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1558	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1253	{	1559	{
1254	ev_rt_now = rtmn_diff + mn_now;	1560	ev_rt_now = rtmn_diff + mn_now;
1255	return 0;	1561	return;
1256	}	1562	}
1257	else	1563
1258	{
1259	now_floor = mn_now;	1564	now_floor = mn_now;
1260	ev_rt_now = ev_time ();	1565	ev_rt_now = ev_time ();
1261	return 1;
1262	}
1263	}
1264		1566
1265	void inline_size	1567	/* loop a few times, before making important decisions.
1266	time_update (EV_P)	1568	* on the choice of "4": one iteration isn't enough,
1267	{	1569	* in case we get preempted during the calls to
1268	int i;	1570	* ev_time and get_clock. a second call is almost guaranteed
1269		1571	* to succeed in that case, though. and looping a few more times
1270	#if EV_USE_MONOTONIC	1572	* doesn't hurt either as we only do this on time-jumps or
1271	if (expect_true (have_monotonic))	1573	* in the unlikely event of having been preempted here.
1272	{	1574	*/
1273	if (time_update_monotonic (EV_A))	1575	for (i = 4; --i; )
1274	{	1576	{
1275	ev_tstamp odiff = rtmn_diff;
1276
1277	/* loop a few times, before making important decisions.
1278	* on the choice of "4": one iteration isn't enough,
1279	* in case we get preempted during the calls to
1280	* ev_time and get_clock. a second call is almost guaranteed
1281	* to succeed in that case, though. and looping a few more times
1282	* doesn't hurt either as we only do this on time-jumps or
1283	* in the unlikely event of having been preempted here.
1284	*/
1285	for (i = 4; --i; )
1286	{
1287	rtmn_diff = ev_rt_now - mn_now;	1577	rtmn_diff = ev_rt_now - mn_now;
1288		1578
1289	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1579	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1290	return; /* all is well */	1580	return; /* all is well */
1291		1581
1292	ev_rt_now = ev_time ();	1582	ev_rt_now = ev_time ();
1293	mn_now = get_clock ();	1583	mn_now = get_clock ();
1294	now_floor = mn_now;	1584	now_floor = mn_now;
1295	}	1585	}
1296		1586
1297	# if EV_PERIODIC_ENABLE	1587	# if EV_PERIODIC_ENABLE
1298	periodics_reschedule (EV_A);	1588	periodics_reschedule (EV_A);
1299	# endif	1589	# endif
1300	/* no timer adjustment, as the monotonic clock doesn't jump */	1590	/* no timer adjustment, as the monotonic clock doesn't jump */
1301	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1591	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1302	}
1303	}	1592	}
1304	else	1593	else
1305	#endif	1594	#endif
1306	{	1595	{
1307	ev_rt_now = ev_time ();	1596	ev_rt_now = ev_time ();
1308		1597
1309	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1598	if (expect_false (mn_now > ev_rt_now \|\| ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1310	{	1599	{
1311	#if EV_PERIODIC_ENABLE	1600	#if EV_PERIODIC_ENABLE
1312	periodics_reschedule (EV_A);	1601	periodics_reschedule (EV_A);
1313	#endif	1602	#endif
1314
1315	/* adjust timers. this is easy, as the offset is the same for all of them */	1603	/* adjust timers. this is easy, as the offset is the same for all of them */
1316	for (i = 0; i < timercnt; ++i)	1604	for (i = 0; i < timercnt; ++i)
1317	((WT)timers [i])->at += ev_rt_now - mn_now;	1605	((WT)timers [i])->at += ev_rt_now - mn_now;
1318	}	1606	}
1319		1607
…		…
1336	static int loop_done;	1624	static int loop_done;
1337		1625
1338	void	1626	void
1339	ev_loop (EV_P_ int flags)	1627	ev_loop (EV_P_ int flags)
1340	{	1628	{
1341	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)	1629	loop_done = EVUNLOOP_CANCEL;
1342	? EVUNLOOP_ONE
1343	: EVUNLOOP_CANCEL;
1344		1630
1345	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1631	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1346		1632
1347	for (;;)	1633	do
1348	{	1634	{
1349	#ifndef _WIN32	1635	#ifndef _WIN32
1350	if (expect_false (curpid)) /* penalise the forking check even more */	1636	if (expect_false (curpid)) /* penalise the forking check even more */
1351	if (expect_false (getpid () != curpid))	1637	if (expect_false (getpid () != curpid))
1352	{	1638	{
…		…
1363	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	1649	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1364	call_pending (EV_A);	1650	call_pending (EV_A);
1365	}	1651	}
1366	#endif	1652	#endif
1367		1653
1368	/* queue check watchers (and execute them) */	1654	/* queue prepare watchers (and execute them) */
1369	if (expect_false (preparecnt))	1655	if (expect_false (preparecnt))
1370	{	1656	{
1371	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1657	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1372	call_pending (EV_A);	1658	call_pending (EV_A);
1373	}	1659	}
…		…
1382	/* update fd-related kernel structures */	1668	/* update fd-related kernel structures */
1383	fd_reify (EV_A);	1669	fd_reify (EV_A);
1384		1670
1385	/* calculate blocking time */	1671	/* calculate blocking time */
1386	{	1672	{
1387	ev_tstamp block;	1673	ev_tstamp waittime = 0.;
		1674	ev_tstamp sleeptime = 0.;
1388		1675
1389	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1676	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1390	block = 0.; /* do not block at all */
1391	else
1392	{	1677	{
1393	/* update time to cancel out callback processing overhead */	1678	/* update time to cancel out callback processing overhead */
1394	#if EV_USE_MONOTONIC
1395	if (expect_true (have_monotonic))
1396	time_update_monotonic (EV_A);	1679	time_update (EV_A_ 1e100);
1397	else
1398	#endif
1399	{
1400	ev_rt_now = ev_time ();
1401	mn_now = ev_rt_now;
1402	}
1403		1680
1404	block = MAX_BLOCKTIME;	1681	waittime = MAX_BLOCKTIME;
1405		1682
1406	if (timercnt)	1683	if (timercnt)
1407	{	1684	{
1408	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1685	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1409	if (block > to) block = to;	1686	if (waittime > to) waittime = to;
1410	}	1687	}
1411		1688
1412	#if EV_PERIODIC_ENABLE	1689	#if EV_PERIODIC_ENABLE
1413	if (periodiccnt)	1690	if (periodiccnt)
1414	{	1691	{
1415	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1692	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1416	if (block > to) block = to;	1693	if (waittime > to) waittime = to;
1417	}	1694	}
1418	#endif	1695	#endif
1419		1696
1420	if (expect_false (block < 0.)) block = 0.;	1697	if (expect_false (waittime < timeout_blocktime))
		1698	waittime = timeout_blocktime;
		1699
		1700	sleeptime = waittime - backend_fudge;
		1701
		1702	if (expect_true (sleeptime > io_blocktime))
		1703	sleeptime = io_blocktime;
		1704
		1705	if (sleeptime)
		1706	{
		1707	ev_sleep (sleeptime);
		1708	waittime -= sleeptime;
		1709	}
1421	}	1710	}
1422		1711
		1712	++loop_count;
1423	backend_poll (EV_A_ block);	1713	backend_poll (EV_A_ waittime);
		1714
		1715	/* update ev_rt_now, do magic */
		1716	time_update (EV_A_ waittime + sleeptime);
1424	}	1717	}
1425
1426	/* update ev_rt_now, do magic */
1427	time_update (EV_A);
1428		1718
1429	/* queue pending timers and reschedule them */	1719	/* queue pending timers and reschedule them */
1430	timers_reify (EV_A); /* relative timers called last */	1720	timers_reify (EV_A); /* relative timers called last */
1431	#if EV_PERIODIC_ENABLE	1721	#if EV_PERIODIC_ENABLE
1432	periodics_reify (EV_A); /* absolute timers called first */	1722	periodics_reify (EV_A); /* absolute timers called first */
1433	#endif	1723	#endif
1434		1724
		1725	#if EV_IDLE_ENABLE
1435	/* queue idle watchers unless other events are pending */	1726	/* queue idle watchers unless other events are pending */
1436	if (idlecnt && !any_pending (EV_A))	1727	idle_reify (EV_A);
1437	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1728	#endif
1438		1729
1439	/* queue check watchers, to be executed first */	1730	/* queue check watchers, to be executed first */
1440	if (expect_false (checkcnt))	1731	if (expect_false (checkcnt))
1441	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1732	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1442		1733
1443	call_pending (EV_A);	1734	call_pending (EV_A);
1444
1445	if (expect_false (loop_done))
1446	break;
1447	}	1735	}
		1736	while (expect_true (
		1737	activecnt
		1738	&& !loop_done
		1739	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))
		1740	));
1448		1741
1449	if (loop_done == EVUNLOOP_ONE)	1742	if (loop_done == EVUNLOOP_ONE)
1450	loop_done = EVUNLOOP_CANCEL;	1743	loop_done = EVUNLOOP_CANCEL;
1451	}	1744	}
1452		1745
…		…
1479	head = &(*head)->next;	1772	head = &(*head)->next;
1480	}	1773	}
1481	}	1774	}
1482		1775
1483	void inline_speed	1776	void inline_speed
1484	ev_clear_pending (EV_P_ W w)	1777	clear_pending (EV_P_ W w)
1485	{	1778	{
1486	if (w->pending)	1779	if (w->pending)
1487	{	1780	{
1488	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1781	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1489	w->pending = 0;	1782	w->pending = 0;
1490	}	1783	}
1491	}	1784	}
1492		1785
		1786	int
		1787	ev_clear_pending (EV_P_ void *w)
		1788	{
		1789	W w_ = (W)w;
		1790	int pending = w_->pending;
		1791
		1792	if (expect_true (pending))
		1793	{
		1794	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1795	w_->pending = 0;
		1796	p->w = 0;
		1797	return p->events;
		1798	}
		1799	else
		1800	return 0;
		1801	}
		1802
		1803	void inline_size
		1804	pri_adjust (EV_P_ W w)
		1805	{
		1806	int pri = w->priority;
		1807	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1808	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1809	w->priority = pri;
		1810	}
		1811
1493	void inline_speed	1812	void inline_speed
1494	ev_start (EV_P_ W w, int active)	1813	ev_start (EV_P_ W w, int active)
1495	{	1814	{
1496	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1815	pri_adjust (EV_A_ w);
1497	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1498
1499	w->active = active;	1816	w->active = active;
1500	ev_ref (EV_A);	1817	ev_ref (EV_A);
1501	}	1818	}
1502		1819
1503	void inline_size	1820	void inline_size
…		…
1507	w->active = 0;	1824	w->active = 0;
1508	}	1825	}
1509		1826
1510	/*****************************************************************************/	1827	/*****************************************************************************/
1511		1828
1512	void	1829	void noinline
1513	ev_io_start (EV_P_ ev_io *w)	1830	ev_io_start (EV_P_ ev_io *w)
1514	{	1831	{
1515	int fd = w->fd;	1832	int fd = w->fd;
1516		1833
1517	if (expect_false (ev_is_active (w)))	1834	if (expect_false (ev_is_active (w)))
…		…
1519		1836
1520	assert (("ev_io_start called with negative fd", fd >= 0));	1837	assert (("ev_io_start called with negative fd", fd >= 0));
1521		1838
1522	ev_start (EV_A_ (W)w, 1);	1839	ev_start (EV_A_ (W)w, 1);
1523	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1840	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1524	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1841	wlist_add (&anfds[fd].head, (WL)w);
1525		1842
1526	fd_change (EV_A_ fd);	1843	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);
		1844	w->events &= ~EV_IOFDSET;
1527	}	1845	}
1528		1846
1529	void	1847	void noinline
1530	ev_io_stop (EV_P_ ev_io *w)	1848	ev_io_stop (EV_P_ ev_io *w)
1531	{	1849	{
1532	ev_clear_pending (EV_A_ (W)w);	1850	clear_pending (EV_A_ (W)w);
1533	if (expect_false (!ev_is_active (w)))	1851	if (expect_false (!ev_is_active (w)))
1534	return;	1852	return;
1535		1853
1536	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1854	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1537		1855
1538	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1856	wlist_del (&anfds[w->fd].head, (WL)w);
1539	ev_stop (EV_A_ (W)w);	1857	ev_stop (EV_A_ (W)w);
1540		1858
1541	fd_change (EV_A_ w->fd);	1859	fd_change (EV_A_ w->fd, 1);
1542	}	1860	}
1543		1861
1544	void	1862	void noinline
1545	ev_timer_start (EV_P_ ev_timer *w)	1863	ev_timer_start (EV_P_ ev_timer *w)
1546	{	1864	{
1547	if (expect_false (ev_is_active (w)))	1865	if (expect_false (ev_is_active (w)))
1548	return;	1866	return;
1549		1867
1550	((WT)w)->at += mn_now;	1868	((WT)w)->at += mn_now;
1551		1869
1552	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1870	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1553		1871
1554	ev_start (EV_A_ (W)w, ++timercnt);	1872	ev_start (EV_A_ (W)w, ++timercnt);
1555	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1873	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1556	timers [timercnt - 1] = w;	1874	timers [timercnt - 1] = (WT)w;
1557	upheap ((WT *)timers, timercnt - 1);	1875	upheap (timers, timercnt - 1);
1558		1876
1559	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/	1877	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
1560	}	1878	}
1561		1879
1562	void	1880	void noinline
1563	ev_timer_stop (EV_P_ ev_timer *w)	1881	ev_timer_stop (EV_P_ ev_timer *w)
1564	{	1882	{
1565	ev_clear_pending (EV_A_ (W)w);	1883	clear_pending (EV_A_ (W)w);
1566	if (expect_false (!ev_is_active (w)))	1884	if (expect_false (!ev_is_active (w)))
1567	return;	1885	return;
1568		1886
1569	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1887	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1570		1888
1571	{	1889	{
1572	int active = ((W)w)->active;	1890	int active = ((W)w)->active;
1573		1891
1574	if (expect_true (--active < --timercnt))	1892	if (expect_true (--active < --timercnt))
1575	{	1893	{
1576	timers [active] = timers [timercnt];	1894	timers [active] = timers [timercnt];
1577	adjustheap ((WT *)timers, timercnt, active);	1895	adjustheap (timers, timercnt, active);
1578	}	1896	}
1579	}	1897	}
1580		1898
1581	((WT)w)->at -= mn_now;	1899	((WT)w)->at -= mn_now;
1582		1900
1583	ev_stop (EV_A_ (W)w);	1901	ev_stop (EV_A_ (W)w);
1584	}	1902	}
1585		1903
1586	void	1904	void noinline
1587	ev_timer_again (EV_P_ ev_timer *w)	1905	ev_timer_again (EV_P_ ev_timer *w)
1588	{	1906	{
1589	if (ev_is_active (w))	1907	if (ev_is_active (w))
1590	{	1908	{
1591	if (w->repeat)	1909	if (w->repeat)
1592	{	1910	{
1593	((WT)w)->at = mn_now + w->repeat;	1911	((WT)w)->at = mn_now + w->repeat;
1594	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1912	adjustheap (timers, timercnt, ((W)w)->active - 1);
1595	}	1913	}
1596	else	1914	else
1597	ev_timer_stop (EV_A_ w);	1915	ev_timer_stop (EV_A_ w);
1598	}	1916	}
1599	else if (w->repeat)	1917	else if (w->repeat)
…		…
1602	ev_timer_start (EV_A_ w);	1920	ev_timer_start (EV_A_ w);
1603	}	1921	}
1604	}	1922	}
1605		1923
1606	#if EV_PERIODIC_ENABLE	1924	#if EV_PERIODIC_ENABLE
1607	void	1925	void noinline
1608	ev_periodic_start (EV_P_ ev_periodic *w)	1926	ev_periodic_start (EV_P_ ev_periodic *w)
1609	{	1927	{
1610	if (expect_false (ev_is_active (w)))	1928	if (expect_false (ev_is_active (w)))
1611	return;	1929	return;
1612		1930
…		…
1614	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1932	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1615	else if (w->interval)	1933	else if (w->interval)
1616	{	1934	{
1617	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1935	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1618	/* this formula differs from the one in periodic_reify because we do not always round up */	1936	/* this formula differs from the one in periodic_reify because we do not always round up */
1619	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1937	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1620	}	1938	}
		1939	else
		1940	((WT)w)->at = w->offset;
1621		1941
1622	ev_start (EV_A_ (W)w, ++periodiccnt);	1942	ev_start (EV_A_ (W)w, ++periodiccnt);
1623	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1943	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1624	periodics [periodiccnt - 1] = w;	1944	periodics [periodiccnt - 1] = (WT)w;
1625	upheap ((WT *)periodics, periodiccnt - 1);	1945	upheap (periodics, periodiccnt - 1);
1626		1946
1627	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/	1947	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
1628	}	1948	}
1629		1949
1630	void	1950	void noinline
1631	ev_periodic_stop (EV_P_ ev_periodic *w)	1951	ev_periodic_stop (EV_P_ ev_periodic *w)
1632	{	1952	{
1633	ev_clear_pending (EV_A_ (W)w);	1953	clear_pending (EV_A_ (W)w);
1634	if (expect_false (!ev_is_active (w)))	1954	if (expect_false (!ev_is_active (w)))
1635	return;	1955	return;
1636		1956
1637	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1957	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1638		1958
1639	{	1959	{
1640	int active = ((W)w)->active;	1960	int active = ((W)w)->active;
1641		1961
1642	if (expect_true (--active < --periodiccnt))	1962	if (expect_true (--active < --periodiccnt))
1643	{	1963	{
1644	periodics [active] = periodics [periodiccnt];	1964	periodics [active] = periodics [periodiccnt];
1645	adjustheap ((WT *)periodics, periodiccnt, active);	1965	adjustheap (periodics, periodiccnt, active);
1646	}	1966	}
1647	}	1967	}
1648		1968
1649	ev_stop (EV_A_ (W)w);	1969	ev_stop (EV_A_ (W)w);
1650	}	1970	}
1651		1971
1652	void	1972	void noinline
1653	ev_periodic_again (EV_P_ ev_periodic *w)	1973	ev_periodic_again (EV_P_ ev_periodic *w)
1654	{	1974	{
1655	/* TODO: use adjustheap and recalculation */	1975	/* TODO: use adjustheap and recalculation */
1656	ev_periodic_stop (EV_A_ w);	1976	ev_periodic_stop (EV_A_ w);
1657	ev_periodic_start (EV_A_ w);	1977	ev_periodic_start (EV_A_ w);
…		…
1660		1980
1661	#ifndef SA_RESTART	1981	#ifndef SA_RESTART
1662	# define SA_RESTART 0	1982	# define SA_RESTART 0
1663	#endif	1983	#endif
1664		1984
1665	void	1985	void noinline
1666	ev_signal_start (EV_P_ ev_signal *w)	1986	ev_signal_start (EV_P_ ev_signal *w)
1667	{	1987	{
1668	#if EV_MULTIPLICITY	1988	#if EV_MULTIPLICITY
1669	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1989	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1670	#endif	1990	#endif
1671	if (expect_false (ev_is_active (w)))	1991	if (expect_false (ev_is_active (w)))
1672	return;	1992	return;
1673		1993
1674	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1994	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1675		1995
		1996	evpipe_init (EV_A);
		1997
		1998	{
		1999	#ifndef _WIN32
		2000	sigset_t full, prev;
		2001	sigfillset (&full);
		2002	sigprocmask (SIG_SETMASK, &full, &prev);
		2003	#endif
		2004
		2005	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		2006
		2007	#ifndef _WIN32
		2008	sigprocmask (SIG_SETMASK, &prev, 0);
		2009	#endif
		2010	}
		2011
1676	ev_start (EV_A_ (W)w, 1);	2012	ev_start (EV_A_ (W)w, 1);
1677	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1678	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2013	wlist_add (&signals [w->signum - 1].head, (WL)w);
1679		2014
1680	if (!((WL)w)->next)	2015	if (!((WL)w)->next)
1681	{	2016	{
1682	#if _WIN32	2017	#if _WIN32
1683	signal (w->signum, sighandler);	2018	signal (w->signum, ev_sighandler);
1684	#else	2019	#else
1685	struct sigaction sa;	2020	struct sigaction sa;
1686	sa.sa_handler = sighandler;	2021	sa.sa_handler = ev_sighandler;
1687	sigfillset (&sa.sa_mask);	2022	sigfillset (&sa.sa_mask);
1688	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2023	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1689	sigaction (w->signum, &sa, 0);	2024	sigaction (w->signum, &sa, 0);
1690	#endif	2025	#endif
1691	}	2026	}
1692	}	2027	}
1693		2028
1694	void	2029	void noinline
1695	ev_signal_stop (EV_P_ ev_signal *w)	2030	ev_signal_stop (EV_P_ ev_signal *w)
1696	{	2031	{
1697	ev_clear_pending (EV_A_ (W)w);	2032	clear_pending (EV_A_ (W)w);
1698	if (expect_false (!ev_is_active (w)))	2033	if (expect_false (!ev_is_active (w)))
1699	return;	2034	return;
1700		2035
1701	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2036	wlist_del (&signals [w->signum - 1].head, (WL)w);
1702	ev_stop (EV_A_ (W)w);	2037	ev_stop (EV_A_ (W)w);
1703		2038
1704	if (!signals [w->signum - 1].head)	2039	if (!signals [w->signum - 1].head)
1705	signal (w->signum, SIG_DFL);	2040	signal (w->signum, SIG_DFL);
1706	}	2041	}
…		…
1713	#endif	2048	#endif
1714	if (expect_false (ev_is_active (w)))	2049	if (expect_false (ev_is_active (w)))
1715	return;	2050	return;
1716		2051
1717	ev_start (EV_A_ (W)w, 1);	2052	ev_start (EV_A_ (W)w, 1);
1718	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2053	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1719	}	2054	}
1720		2055
1721	void	2056	void
1722	ev_child_stop (EV_P_ ev_child *w)	2057	ev_child_stop (EV_P_ ev_child *w)
1723	{	2058	{
1724	ev_clear_pending (EV_A_ (W)w);	2059	clear_pending (EV_A_ (W)w);
1725	if (expect_false (!ev_is_active (w)))	2060	if (expect_false (!ev_is_active (w)))
1726	return;	2061	return;
1727		2062
1728	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2063	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1729	ev_stop (EV_A_ (W)w);	2064	ev_stop (EV_A_ (W)w);
1730	}	2065	}
1731		2066
1732	#if EV_STAT_ENABLE	2067	#if EV_STAT_ENABLE
1733		2068
…		…
1965	}	2300	}
1966		2301
1967	void	2302	void
1968	ev_stat_stop (EV_P_ ev_stat *w)	2303	ev_stat_stop (EV_P_ ev_stat *w)
1969	{	2304	{
1970	ev_clear_pending (EV_A_ (W)w);	2305	clear_pending (EV_A_ (W)w);
1971	if (expect_false (!ev_is_active (w)))	2306	if (expect_false (!ev_is_active (w)))
1972	return;	2307	return;
1973		2308
1974	#if EV_USE_INOTIFY	2309	#if EV_USE_INOTIFY
1975	infy_del (EV_A_ w);	2310	infy_del (EV_A_ w);
…		…
1978		2313
1979	ev_stop (EV_A_ (W)w);	2314	ev_stop (EV_A_ (W)w);
1980	}	2315	}
1981	#endif	2316	#endif
1982		2317
		2318	#if EV_IDLE_ENABLE
1983	void	2319	void
1984	ev_idle_start (EV_P_ ev_idle *w)	2320	ev_idle_start (EV_P_ ev_idle *w)
1985	{	2321	{
1986	if (expect_false (ev_is_active (w)))	2322	if (expect_false (ev_is_active (w)))
1987	return;	2323	return;
1988		2324
		2325	pri_adjust (EV_A_ (W)w);
		2326
		2327	{
		2328	int active = ++idlecnt [ABSPRI (w)];
		2329
		2330	++idleall;
1989	ev_start (EV_A_ (W)w, ++idlecnt);	2331	ev_start (EV_A_ (W)w, active);
		2332
1990	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);	2333	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1991	idles [idlecnt - 1] = w;	2334	idles [ABSPRI (w)][active - 1] = w;
		2335	}
1992	}	2336	}
1993		2337
1994	void	2338	void
1995	ev_idle_stop (EV_P_ ev_idle *w)	2339	ev_idle_stop (EV_P_ ev_idle *w)
1996	{	2340	{
1997	ev_clear_pending (EV_A_ (W)w);	2341	clear_pending (EV_A_ (W)w);
1998	if (expect_false (!ev_is_active (w)))	2342	if (expect_false (!ev_is_active (w)))
1999	return;	2343	return;
2000		2344
2001	{	2345	{
2002	int active = ((W)w)->active;	2346	int active = ((W)w)->active;
2003	idles [active - 1] = idles [--idlecnt];	2347
		2348	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2004	((W)idles [active - 1])->active = active;	2349	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2350
		2351	ev_stop (EV_A_ (W)w);
		2352	--idleall;
2005	}	2353	}
2006
2007	ev_stop (EV_A_ (W)w);
2008	}	2354	}
		2355	#endif
2009		2356
2010	void	2357	void
2011	ev_prepare_start (EV_P_ ev_prepare *w)	2358	ev_prepare_start (EV_P_ ev_prepare *w)
2012	{	2359	{
2013	if (expect_false (ev_is_active (w)))	2360	if (expect_false (ev_is_active (w)))
…		…
2019	}	2366	}
2020		2367
2021	void	2368	void
2022	ev_prepare_stop (EV_P_ ev_prepare *w)	2369	ev_prepare_stop (EV_P_ ev_prepare *w)
2023	{	2370	{
2024	ev_clear_pending (EV_A_ (W)w);	2371	clear_pending (EV_A_ (W)w);
2025	if (expect_false (!ev_is_active (w)))	2372	if (expect_false (!ev_is_active (w)))
2026	return;	2373	return;
2027		2374
2028	{	2375	{
2029	int active = ((W)w)->active;	2376	int active = ((W)w)->active;
…		…
2046	}	2393	}
2047		2394
2048	void	2395	void
2049	ev_check_stop (EV_P_ ev_check *w)	2396	ev_check_stop (EV_P_ ev_check *w)
2050	{	2397	{
2051	ev_clear_pending (EV_A_ (W)w);	2398	clear_pending (EV_A_ (W)w);
2052	if (expect_false (!ev_is_active (w)))	2399	if (expect_false (!ev_is_active (w)))
2053	return;	2400	return;
2054		2401
2055	{	2402	{
2056	int active = ((W)w)->active;	2403	int active = ((W)w)->active;
…		…
2063		2410
2064	#if EV_EMBED_ENABLE	2411	#if EV_EMBED_ENABLE
2065	void noinline	2412	void noinline
2066	ev_embed_sweep (EV_P_ ev_embed *w)	2413	ev_embed_sweep (EV_P_ ev_embed *w)
2067	{	2414	{
2068	ev_loop (w->loop, EVLOOP_NONBLOCK);	2415	ev_loop (w->other, EVLOOP_NONBLOCK);
2069	}	2416	}
2070		2417
2071	static void	2418	static void
2072	embed_cb (EV_P_ ev_io *io, int revents)	2419	embed_io_cb (EV_P_ ev_io *io, int revents)
2073	{	2420	{
2074	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2421	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
2075		2422
2076	if (ev_cb (w))	2423	if (ev_cb (w))
2077	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2424	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2078	else	2425	else
2079	ev_embed_sweep (loop, w);	2426	ev_loop (w->other, EVLOOP_NONBLOCK);
2080	}	2427	}
		2428
		2429	static void
		2430	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2431	{
		2432	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
		2433
		2434	{
		2435	struct ev_loop *loop = w->other;
		2436
		2437	while (fdchangecnt)
		2438	{
		2439	fd_reify (EV_A);
		2440	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2441	}
		2442	}
		2443	}
		2444
		2445	#if 0
		2446	static void
		2447	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2448	{
		2449	ev_idle_stop (EV_A_ idle);
		2450	}
		2451	#endif
2081		2452
2082	void	2453	void
2083	ev_embed_start (EV_P_ ev_embed *w)	2454	ev_embed_start (EV_P_ ev_embed *w)
2084	{	2455	{
2085	if (expect_false (ev_is_active (w)))	2456	if (expect_false (ev_is_active (w)))
2086	return;	2457	return;
2087		2458
2088	{	2459	{
2089	struct ev_loop *loop = w->loop;	2460	struct ev_loop *loop = w->other;
2090	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2461	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2091	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2462	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2092	}	2463	}
2093		2464
2094	ev_set_priority (&w->io, ev_priority (w));	2465	ev_set_priority (&w->io, ev_priority (w));
2095	ev_io_start (EV_A_ &w->io);	2466	ev_io_start (EV_A_ &w->io);
2096		2467
		2468	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2469	ev_set_priority (&w->prepare, EV_MINPRI);
		2470	ev_prepare_start (EV_A_ &w->prepare);
		2471
		2472	/ev_idle_init (&w->idle, e,bed_idle_cb);/
		2473
2097	ev_start (EV_A_ (W)w, 1);	2474	ev_start (EV_A_ (W)w, 1);
2098	}	2475	}
2099		2476
2100	void	2477	void
2101	ev_embed_stop (EV_P_ ev_embed *w)	2478	ev_embed_stop (EV_P_ ev_embed *w)
2102	{	2479	{
2103	ev_clear_pending (EV_A_ (W)w);	2480	clear_pending (EV_A_ (W)w);
2104	if (expect_false (!ev_is_active (w)))	2481	if (expect_false (!ev_is_active (w)))
2105	return;	2482	return;
2106		2483
2107	ev_io_stop (EV_A_ &w->io);	2484	ev_io_stop (EV_A_ &w->io);
		2485	ev_prepare_stop (EV_A_ &w->prepare);
2108		2486
2109	ev_stop (EV_A_ (W)w);	2487	ev_stop (EV_A_ (W)w);
2110	}	2488	}
2111	#endif	2489	#endif
2112		2490
…		…
2123	}	2501	}
2124		2502
2125	void	2503	void
2126	ev_fork_stop (EV_P_ ev_fork *w)	2504	ev_fork_stop (EV_P_ ev_fork *w)
2127	{	2505	{
2128	ev_clear_pending (EV_A_ (W)w);	2506	clear_pending (EV_A_ (W)w);
2129	if (expect_false (!ev_is_active (w)))	2507	if (expect_false (!ev_is_active (w)))
2130	return;	2508	return;
2131		2509
2132	{	2510	{
2133	int active = ((W)w)->active;	2511	int active = ((W)w)->active;
…		…
2137		2515
2138	ev_stop (EV_A_ (W)w);	2516	ev_stop (EV_A_ (W)w);
2139	}	2517	}
2140	#endif	2518	#endif
2141		2519
		2520	#if EV_ASYNC_ENABLE
		2521	void
		2522	ev_async_start (EV_P_ ev_async *w)
		2523	{
		2524	if (expect_false (ev_is_active (w)))
		2525	return;
		2526
		2527	evpipe_init (EV_A);
		2528
		2529	ev_start (EV_A_ (W)w, ++asynccnt);
		2530	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2531	asyncs [asynccnt - 1] = w;
		2532	}
		2533
		2534	void
		2535	ev_async_stop (EV_P_ ev_async *w)
		2536	{
		2537	clear_pending (EV_A_ (W)w);
		2538	if (expect_false (!ev_is_active (w)))
		2539	return;
		2540
		2541	{
		2542	int active = ((W)w)->active;
		2543	asyncs [active - 1] = asyncs [--asynccnt];
		2544	((W)asyncs [active - 1])->active = active;
		2545	}
		2546
		2547	ev_stop (EV_A_ (W)w);
		2548	}
		2549
		2550	void
		2551	ev_async_send (EV_P_ ev_async *w)
		2552	{
		2553	w->sent = 1;
		2554	evpipe_write (EV_A_ &gotasync);
		2555	}
		2556	#endif
		2557
2142	/*****************************************************************************/	2558	/*****************************************************************************/
2143		2559
2144	struct ev_once	2560	struct ev_once
2145	{	2561	{
2146	ev_io io;	2562	ev_io io;
…		…
2201	ev_timer_set (&once->to, timeout, 0.);	2617	ev_timer_set (&once->to, timeout, 0.);
2202	ev_timer_start (EV_A_ &once->to);	2618	ev_timer_start (EV_A_ &once->to);
2203	}	2619	}
2204	}	2620	}
2205		2621
		2622	#if EV_MULTIPLICITY
		2623	#include "ev_wrap.h"
		2624	#endif
		2625
2206	#ifdef __cplusplus	2626	#ifdef __cplusplus
2207	}	2627	}
2208	#endif	2628	#endif
2209		2629

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Comparing libev/ev.c (file contents): Revision 1.159 by root, Sat Dec 1 19:48:36 2007 UTC vs. Revision 1.222 by root, Sun Apr 6 12:45:58 2008 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.159 by root, Sat Dec 1 19:48:36 2007 UTC vs.
Revision 1.222 by root, Sun Apr 6 12:45:58 2008 UTC