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

Comparing libev/ev.c (file contents):
Revision 1.158 by root, Thu Nov 29 17:28:13 2007 UTC vs.
Revision 1.221 by root, Sun Apr 6 12:44:49 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
		272	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
216	# include <sys/inotify.h>	273	# include <stdint.h>
		274	int eventfd (unsigned int initval, int flags);
217	#endif	275	#endif
218		276
219	/**/	277	/**/
		278
		279	/*
		280	* This is used to avoid floating point rounding problems.
		281	* It is added to ev_rt_now when scheduling periodics
		282	* to ensure progress, time-wise, even when rounding
		283	* errors are against us.
		284	* This value is good at least till the year 4000.
		285	* Better solutions welcome.
		286	*/
		287	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
220		288
221	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	289	#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) */	290	#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 */	291	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds, TODO */
224		292
225	#if __GNUC__ >= 3	293	#if __GNUC__ >= 4
226	# define expect(expr,value) __builtin_expect ((expr),(value))	294	# 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))	295	# 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	296	#else
236	# define expect(expr,value) (expr)	297	# define expect(expr,value) (expr)
237	# define inline_speed static
238	# define inline_size static
239	# define noinline	298	# define noinline
		299	# if __STDC_VERSION__ < 199901L
		300	# define inline
		301	# endif
240	#endif	302	#endif
241		303
242	#define expect_false(expr) expect ((expr) != 0, 0)	304	#define expect_false(expr) expect ((expr) != 0, 0)
243	#define expect_true(expr) expect ((expr) != 0, 1)	305	#define expect_true(expr) expect ((expr) != 0, 1)
		306	#define inline_size static inline
		307
		308	#if EV_MINIMAL
		309	# define inline_speed static noinline
		310	#else
		311	# define inline_speed static inline
		312	#endif
244		313
245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	314	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
246	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	315	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
247		316
248	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	317	#define EMPTY /* required for microsofts broken pseudo-c compiler */
249	#define EMPTY2(a,b) /* used to suppress some warnings */	318	#define EMPTY2(a,b) /* used to suppress some warnings */
250		319
251	typedef ev_watcher *W;	320	typedef ev_watcher *W;
252	typedef ev_watcher_list *WL;	321	typedef ev_watcher_list *WL;
253	typedef ev_watcher_time *WT;	322	typedef ev_watcher_time *WT;
254		323
		324	#if EV_USE_MONOTONIC
		325	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		326	/* giving it a reasonably high chance of working on typical architetcures */
255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	327	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		328	#endif
256		329
257	#ifdef _WIN32	330	#ifdef _WIN32
258	# include "ev_win32.c"	331	# include "ev_win32.c"
259	#endif	332	#endif
260		333
…		…
396	{	469	{
397	return ev_rt_now;	470	return ev_rt_now;
398	}	471	}
399	#endif	472	#endif
400		473
401	#define array_roundsize(type,n) (((n) \| 4) & ~3)	474	void
		475	ev_sleep (ev_tstamp delay)
		476	{
		477	if (delay > 0.)
		478	{
		479	#if EV_USE_NANOSLEEP
		480	struct timespec ts;
		481
		482	ts.tv_sec = (time_t)delay;
		483	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		484
		485	nanosleep (&ts, 0);
		486	#elif defined(_WIN32)
		487	Sleep ((unsigned long)(delay * 1e3));
		488	#else
		489	struct timeval tv;
		490
		491	tv.tv_sec = (time_t)delay;
		492	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		493
		494	select (0, 0, 0, 0, &tv);
		495	#endif
		496	}
		497	}
		498
		499	/*****************************************************************************/
		500
		501	int inline_size
		502	array_nextsize (int elem, int cur, int cnt)
		503	{
		504	int ncur = cur + 1;
		505
		506	do
		507	ncur <<= 1;
		508	while (cnt > ncur);
		509
		510	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		511	if (elem * ncur > 4096)
		512	{
		513	ncur *= elem;
		514	ncur = (ncur + elem + 4095 + sizeof (void ) 4) & ~4095;
		515	ncur = ncur - sizeof (void ) 4;
		516	ncur /= elem;
		517	}
		518
		519	return ncur;
		520	}
		521
		522	static noinline void *
		523	array_realloc (int elem, void base, int cur, int cnt)
		524	{
		525	cur = array_nextsize (elem, cur, cnt);
		526	return ev_realloc (base, elem * *cur);
		527	}
402		528
403	#define array_needsize(type,base,cur,cnt,init) \	529	#define array_needsize(type,base,cur,cnt,init) \
404	if (expect_false ((cnt) > cur)) \	530	if (expect_false ((cnt) > (cur))) \
405	{ \	531	{ \
406	int newcnt = cur; \	532	int ocur_ = (cur); \
407	do \	533	(base) = (type *)array_realloc \
408	{ \	534	(sizeof (type), (base), &(cur), (cnt)); \
409	newcnt = array_roundsize (type, newcnt << 1); \	535	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	}	536	}
417		537
		538	#if 0
418	#define array_slim(type,stem) \	539	#define array_slim(type,stem) \
419	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	540	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
420	{ \	541	{ \
421	stem ## max = array_roundsize (stem ## cnt >> 1); \	542	stem ## max = array_roundsize (stem ## cnt >> 1); \
422	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\	543	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
423	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	544	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
424	}	545	}
		546	#endif
425		547
426	#define array_free(stem, idx) \	548	#define array_free(stem, idx) \
427	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	549	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
428		550
429	/*****************************************************************************/	551	/*****************************************************************************/
430		552
431	void noinline	553	void noinline
432	ev_feed_event (EV_P_ void *w, int revents)	554	ev_feed_event (EV_P_ void *w, int revents)
433	{	555	{
434	W w_ = (W)w;	556	W w_ = (W)w;
		557	int pri = ABSPRI (w_);
435		558
436	if (expect_false (w_->pending))	559	if (expect_false (w_->pending))
		560	pendings [pri][w_->pending - 1].events \|= revents;
		561	else
437	{	562	{
		563	w_->pending = ++pendingcnt [pri];
		564	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		565	pendings [pri][w_->pending - 1].w = w_;
438	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;	566	pendings [pri][w_->pending - 1].events = revents;
439	return;
440	}	567	}
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	}	568	}
447		569
448	void inline_size	570	void inline_speed
449	queue_events (EV_P_ W *events, int eventcnt, int type)	571	queue_events (EV_P_ W *events, int eventcnt, int type)
450	{	572	{
451	int i;	573	int i;
452		574
453	for (i = 0; i < eventcnt; ++i)	575	for (i = 0; i < eventcnt; ++i)
…		…
485	}	607	}
486		608
487	void	609	void
488	ev_feed_fd_event (EV_P_ int fd, int revents)	610	ev_feed_fd_event (EV_P_ int fd, int revents)
489	{	611	{
		612	if (fd >= 0 && fd < anfdmax)
490	fd_event (EV_A_ fd, revents);	613	fd_event (EV_A_ fd, revents);
491	}	614	}
492		615
493	void inline_size	616	void inline_size
494	fd_reify (EV_P)	617	fd_reify (EV_P)
495	{	618	{
…		…
499	{	622	{
500	int fd = fdchanges [i];	623	int fd = fdchanges [i];
501	ANFD *anfd = anfds + fd;	624	ANFD *anfd = anfds + fd;
502	ev_io *w;	625	ev_io *w;
503		626
504	int events = 0;	627	unsigned char events = 0;
505		628
506	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	629	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
507	events \|= w->events;	630	events \|= (unsigned char)w->events;
508		631
509	#if EV_SELECT_IS_WINSOCKET	632	#if EV_SELECT_IS_WINSOCKET
510	if (events)	633	if (events)
511	{	634	{
512	unsigned long argp;	635	unsigned long argp;
		636	#ifdef EV_FD_TO_WIN32_HANDLE
		637	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		638	#else
513	anfd->handle = _get_osfhandle (fd);	639	anfd->handle = _get_osfhandle (fd);
		640	#endif
514	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	641	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
515	}	642	}
516	#endif	643	#endif
517		644
		645	{
		646	unsigned char o_events = anfd->events;
		647	unsigned char o_reify = anfd->reify;
		648
518	anfd->reify = 0;	649	anfd->reify = 0;
519
520	backend_modify (EV_A_ fd, anfd->events, events);
521	anfd->events = events;	650	anfd->events = events;
		651
		652	if (o_events != events \|\| o_reify & EV_IOFDSET)
		653	backend_modify (EV_A_ fd, o_events, events);
		654	}
522	}	655	}
523		656
524	fdchangecnt = 0;	657	fdchangecnt = 0;
525	}	658	}
526		659
527	void inline_size	660	void inline_size
528	fd_change (EV_P_ int fd)	661	fd_change (EV_P_ int fd, int flags)
529	{	662	{
530	if (expect_false (anfds [fd].reify))	663	unsigned char reify = anfds [fd].reify;
531	return;
532
533	anfds [fd].reify = 1;	664	anfds [fd].reify \|= flags;
534		665
		666	if (expect_true (!reify))
		667	{
535	++fdchangecnt;	668	++fdchangecnt;
536	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	669	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
537	fdchanges [fdchangecnt - 1] = fd;	670	fdchanges [fdchangecnt - 1] = fd;
		671	}
538	}	672	}
539		673
540	void inline_speed	674	void inline_speed
541	fd_kill (EV_P_ int fd)	675	fd_kill (EV_P_ int fd)
542	{	676	{
…		…
593		727
594	for (fd = 0; fd < anfdmax; ++fd)	728	for (fd = 0; fd < anfdmax; ++fd)
595	if (anfds [fd].events)	729	if (anfds [fd].events)
596	{	730	{
597	anfds [fd].events = 0;	731	anfds [fd].events = 0;
598	fd_change (EV_A_ fd);	732	fd_change (EV_A_ fd, EV_IOFDSET \| 1);
599	}	733	}
600	}	734	}
601		735
602	/*****************************************************************************/	736	/*****************************************************************************/
603		737
604	void inline_speed	738	void inline_speed
605	upheap (WT *heap, int k)	739	upheap (WT *heap, int k)
606	{	740	{
607	WT w = heap [k];	741	WT w = heap [k];
608		742
609	while (k && heap [k >> 1]->at > w->at)	743	while (k)
610	{	744	{
		745	int p = (k - 1) >> 1;
		746
		747	if (heap [p]->at <= w->at)
		748	break;
		749
611	heap [k] = heap [k >> 1];	750	heap [k] = heap [p];
612	((W)heap [k])->active = k + 1;	751	((W)heap [k])->active = k + 1;
613	k >>= 1;	752	k = p;
614	}	753	}
615		754
616	heap [k] = w;	755	heap [k] = w;
617	((W)heap [k])->active = k + 1;	756	((W)heap [k])->active = k + 1;
618
619	}	757	}
620		758
621	void inline_speed	759	void inline_speed
622	downheap (WT *heap, int N, int k)	760	downheap (WT *heap, int N, int k)
623	{	761	{
624	WT w = heap [k];	762	WT w = heap [k];
625		763
626	while (k < (N >> 1))	764	for (;;)
627	{	765	{
628	int j = k << 1;	766	int c = (k << 1) + 1;
629		767
630	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	768	if (c >= N)
631	++j;
632
633	if (w->at <= heap [j]->at)
634	break;	769	break;
635		770
		771	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		772	? 1 : 0;
		773
		774	if (w->at <= heap [c]->at)
		775	break;
		776
636	heap [k] = heap [j];	777	heap [k] = heap [c];
637	((W)heap [k])->active = k + 1;	778	((W)heap [k])->active = k + 1;
		779
638	k = j;	780	k = c;
639	}	781	}
640		782
641	heap [k] = w;	783	heap [k] = w;
642	((W)heap [k])->active = k + 1;	784	((W)heap [k])->active = k + 1;
643	}	785	}
…		…
652	/*****************************************************************************/	794	/*****************************************************************************/
653		795
654	typedef struct	796	typedef struct
655	{	797	{
656	WL head;	798	WL head;
657	sig_atomic_t volatile gotsig;	799	EV_ATOMIC_T gotsig;
658	} ANSIG;	800	} ANSIG;
659		801
660	static ANSIG *signals;	802	static ANSIG *signals;
661	static int signalmax;	803	static int signalmax;
662		804
663	static int sigpipe [2];	805	static EV_ATOMIC_T gotsig;
664	static sig_atomic_t volatile gotsig;
665	static ev_io sigev;
666		806
667	void inline_size	807	void inline_size
668	signals_init (ANSIG *base, int count)	808	signals_init (ANSIG *base, int count)
669	{	809	{
670	while (count--)	810	while (count--)
…		…
674		814
675	++base;	815	++base;
676	}	816	}
677	}	817	}
678		818
679	static void	819	/*****************************************************************************/
680	sighandler (int signum)
681	{
682	#if _WIN32
683	signal (signum, sighandler);
684	#endif
685		820
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	821	void inline_speed
731	fd_intern (int fd)	822	fd_intern (int fd)
732	{	823	{
733	#ifdef _WIN32	824	#ifdef _WIN32
734	int arg = 1;	825	int arg = 1;
735	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	826	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
738	fcntl (fd, F_SETFL, O_NONBLOCK);	829	fcntl (fd, F_SETFL, O_NONBLOCK);
739	#endif	830	#endif
740	}	831	}
741		832
742	static void noinline	833	static void noinline
743	siginit (EV_P)	834	evpipe_init (EV_P)
744	{	835	{
		836	if (!ev_is_active (&pipeev))
		837	{
		838	#if EV_USE_EVENTFD
		839	if ((evfd = eventfd (0, 0)) >= 0)
		840	{
		841	evpipe [0] = -1;
		842	fd_intern (evfd);
		843	ev_io_set (&pipeev, evfd, EV_READ);
		844	}
		845	else
		846	#endif
		847	{
		848	while (pipe (evpipe))
		849	syserr ("(libev) error creating signal/async pipe");
		850
745	fd_intern (sigpipe [0]);	851	fd_intern (evpipe [0]);
746	fd_intern (sigpipe [1]);	852	fd_intern (evpipe [1]);
		853	ev_io_set (&pipeev, evpipe [0], EV_READ);
		854	}
747		855
748	ev_io_set (&sigev, sigpipe [0], EV_READ);
749	ev_io_start (EV_A_ &sigev);	856	ev_io_start (EV_A_ &pipeev);
750	ev_unref (EV_A); /* child watcher should not keep loop alive */	857	ev_unref (EV_A); /* watcher should not keep loop alive */
		858	}
		859	}
		860
		861	void inline_size
		862	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		863	{
		864	if (!*flag)
		865	{
		866	int old_errno = errno; /* save errno because write might clobber it */
		867
		868	*flag = 1;
		869
		870	#if EV_USE_EVENTFD
		871	if (evfd >= 0)
		872	{
		873	uint64_t counter = 1;
		874	write (evfd, &counter, sizeof (uint64_t));
		875	}
		876	else
		877	#endif
		878	write (evpipe [1], &old_errno, 1);
		879
		880	errno = old_errno;
		881	}
		882	}
		883
		884	static void
		885	pipecb (EV_P_ ev_io *iow, int revents)
		886	{
		887	#if EV_USE_EVENTFD
		888	if (evfd >= 0)
		889	{
		890	uint64_t counter = 1;
		891	read (evfd, &counter, sizeof (uint64_t));
		892	}
		893	else
		894	#endif
		895	{
		896	char dummy;
		897	read (evpipe [0], &dummy, 1);
		898	}
		899
		900	if (gotsig && ev_is_default_loop (EV_A))
		901	{
		902	int signum;
		903	gotsig = 0;
		904
		905	for (signum = signalmax; signum--; )
		906	if (signals [signum].gotsig)
		907	ev_feed_signal_event (EV_A_ signum + 1);
		908	}
		909
		910	#if EV_ASYNC_ENABLE
		911	if (gotasync)
		912	{
		913	int i;
		914	gotasync = 0;
		915
		916	for (i = asynccnt; i--; )
		917	if (asyncs [i]->sent)
		918	{
		919	asyncs [i]->sent = 0;
		920	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		921	}
		922	}
		923	#endif
751	}	924	}
752		925
753	/*****************************************************************************/	926	/*****************************************************************************/
754		927
		928	static void
		929	ev_sighandler (int signum)
		930	{
		931	#if EV_MULTIPLICITY
		932	struct ev_loop *loop = &default_loop_struct;
		933	#endif
		934
		935	#if _WIN32
		936	signal (signum, ev_sighandler);
		937	#endif
		938
		939	signals [signum - 1].gotsig = 1;
		940	evpipe_write (EV_A_ &gotsig);
		941	}
		942
		943	void noinline
		944	ev_feed_signal_event (EV_P_ int signum)
		945	{
		946	WL w;
		947
		948	#if EV_MULTIPLICITY
		949	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		950	#endif
		951
		952	--signum;
		953
		954	if (signum < 0 \|\| signum >= signalmax)
		955	return;
		956
		957	signals [signum].gotsig = 0;
		958
		959	for (w = signals [signum].head; w; w = w->next)
		960	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		961	}
		962
		963	/*****************************************************************************/
		964
755	static ev_child *childs [EV_PID_HASHSIZE];	965	static WL childs [EV_PID_HASHSIZE];
756		966
757	#ifndef _WIN32	967	#ifndef _WIN32
758		968
759	static ev_signal childev;	969	static ev_signal childev;
760		970
		971	#ifndef WIFCONTINUED
		972	# define WIFCONTINUED(status) 0
		973	#endif
		974
761	void inline_speed	975	void inline_speed
762	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	976	child_reap (EV_P_ int chain, int pid, int status)
763	{	977	{
764	ev_child *w;	978	ev_child *w;
		979	int traced = WIFSTOPPED (status) \|\| WIFCONTINUED (status);
765		980
766	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	981	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
		982	{
767	if (w->pid == pid \|\| !w->pid)	983	if ((w->pid == pid \|\| !w->pid)
		984	&& (!traced \|\| (w->flags & 1)))
768	{	985	{
769	ev_priority (w) = ev_priority (sw); /* need to do it now */	986	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;	987	w->rpid = pid;
771	w->rstatus = status;	988	w->rstatus = status;
772	ev_feed_event (EV_A_ (W)w, EV_CHILD);	989	ev_feed_event (EV_A_ (W)w, EV_CHILD);
773	}	990	}
		991	}
774	}	992	}
775		993
776	#ifndef WCONTINUED	994	#ifndef WCONTINUED
777	# define WCONTINUED 0	995	# define WCONTINUED 0
778	#endif	996	#endif
…		…
787	if (!WCONTINUED	1005	if (!WCONTINUED
788	\|\| errno != EINVAL	1006	\|\| errno != EINVAL
789	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))	1007	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))
790	return;	1008	return;
791		1009
792	/* make sure we are called again until all childs have been reaped */	1010	/* 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 */	1011	/* 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);	1012	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
795		1013
796	child_reap (EV_A_ sw, pid, pid, status);	1014	child_reap (EV_A_ pid, pid, status);
797	if (EV_PID_HASHSIZE > 1)	1015	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 */	1016	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
799	}	1017	}
800		1018
801	#endif	1019	#endif
802		1020
803	/*****************************************************************************/	1021	/*****************************************************************************/
…		…
875	}	1093	}
876		1094
877	unsigned int	1095	unsigned int
878	ev_embeddable_backends (void)	1096	ev_embeddable_backends (void)
879	{	1097	{
880	return EVBACKEND_EPOLL	1098	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
881	\| EVBACKEND_KQUEUE	1099
882	\| EVBACKEND_PORT;	1100	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1101	/* please fix it and tell me how to detect the fix */
		1102	flags &= ~EVBACKEND_EPOLL;
		1103
		1104	return flags;
883	}	1105	}
884		1106
885	unsigned int	1107	unsigned int
886	ev_backend (EV_P)	1108	ev_backend (EV_P)
887	{	1109	{
888	return backend;	1110	return backend;
		1111	}
		1112
		1113	unsigned int
		1114	ev_loop_count (EV_P)
		1115	{
		1116	return loop_count;
		1117	}
		1118
		1119	void
		1120	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1121	{
		1122	io_blocktime = interval;
		1123	}
		1124
		1125	void
		1126	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1127	{
		1128	timeout_blocktime = interval;
889	}	1129	}
890		1130
891	static void noinline	1131	static void noinline
892	loop_init (EV_P_ unsigned int flags)	1132	loop_init (EV_P_ unsigned int flags)
893	{	1133	{
…		…
899	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1139	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
900	have_monotonic = 1;	1140	have_monotonic = 1;
901	}	1141	}
902	#endif	1142	#endif
903		1143
904	ev_rt_now = ev_time ();	1144	ev_rt_now = ev_time ();
905	mn_now = get_clock ();	1145	mn_now = get_clock ();
906	now_floor = mn_now;	1146	now_floor = mn_now;
907	rtmn_diff = ev_rt_now - mn_now;	1147	rtmn_diff = ev_rt_now - mn_now;
		1148
		1149	io_blocktime = 0.;
		1150	timeout_blocktime = 0.;
		1151	backend = 0;
		1152	backend_fd = -1;
		1153	gotasync = 0;
		1154	#if EV_USE_INOTIFY
		1155	fs_fd = -2;
		1156	#endif
908		1157
909	/* pid check not overridable via env */	1158	/* pid check not overridable via env */
910	#ifndef _WIN32	1159	#ifndef _WIN32
911	if (flags & EVFLAG_FORKCHECK)	1160	if (flags & EVFLAG_FORKCHECK)
912	curpid = getpid ();	1161	curpid = getpid ();
…		…
918	flags = atoi (getenv ("LIBEV_FLAGS"));	1167	flags = atoi (getenv ("LIBEV_FLAGS"));
919		1168
920	if (!(flags & 0x0000ffffUL))	1169	if (!(flags & 0x0000ffffUL))
921	flags \|= ev_recommended_backends ();	1170	flags \|= ev_recommended_backends ();
922		1171
923	backend = 0;
924	backend_fd = -1;
925	#if EV_USE_INOTIFY
926	fs_fd = -2;
927	#endif
928
929	#if EV_USE_PORT	1172	#if EV_USE_PORT
930	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1173	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
931	#endif	1174	#endif
932	#if EV_USE_KQUEUE	1175	#if EV_USE_KQUEUE
933	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1176	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
940	#endif	1183	#endif
941	#if EV_USE_SELECT	1184	#if EV_USE_SELECT
942	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1185	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
943	#endif	1186	#endif
944		1187
945	ev_init (&sigev, sigcb);	1188	ev_init (&pipeev, pipecb);
946	ev_set_priority (&sigev, EV_MAXPRI);	1189	ev_set_priority (&pipeev, EV_MAXPRI);
947	}	1190	}
948	}	1191	}
949		1192
950	static void noinline	1193	static void noinline
951	loop_destroy (EV_P)	1194	loop_destroy (EV_P)
952	{	1195	{
953	int i;	1196	int i;
		1197
		1198	if (ev_is_active (&pipeev))
		1199	{
		1200	ev_ref (EV_A); /* signal watcher */
		1201	ev_io_stop (EV_A_ &pipeev);
		1202
		1203	#if EV_USE_EVENTFD
		1204	if (evfd >= 0)
		1205	close (evfd);
		1206	#endif
		1207
		1208	if (evpipe [0] >= 0)
		1209	{
		1210	close (evpipe [0]);
		1211	close (evpipe [1]);
		1212	}
		1213	}
954		1214
955	#if EV_USE_INOTIFY	1215	#if EV_USE_INOTIFY
956	if (fs_fd >= 0)	1216	if (fs_fd >= 0)
957	close (fs_fd);	1217	close (fs_fd);
958	#endif	1218	#endif
…		…
975	#if EV_USE_SELECT	1235	#if EV_USE_SELECT
976	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1236	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
977	#endif	1237	#endif
978		1238
979	for (i = NUMPRI; i--; )	1239	for (i = NUMPRI; i--; )
		1240	{
980	array_free (pending, [i]);	1241	array_free (pending, [i]);
		1242	#if EV_IDLE_ENABLE
		1243	array_free (idle, [i]);
		1244	#endif
		1245	}
		1246
		1247	ev_free (anfds); anfdmax = 0;
981		1248
982	/* have to use the microsoft-never-gets-it-right macro */	1249	/* have to use the microsoft-never-gets-it-right macro */
983	array_free (fdchange, EMPTY0);	1250	array_free (fdchange, EMPTY);
984	array_free (timer, EMPTY0);	1251	array_free (timer, EMPTY);
985	#if EV_PERIODIC_ENABLE	1252	#if EV_PERIODIC_ENABLE
986	array_free (periodic, EMPTY0);	1253	array_free (periodic, EMPTY);
987	#endif	1254	#endif
		1255	#if EV_FORK_ENABLE
988	array_free (idle, EMPTY0);	1256	array_free (fork, EMPTY);
		1257	#endif
989	array_free (prepare, EMPTY0);	1258	array_free (prepare, EMPTY);
990	array_free (check, EMPTY0);	1259	array_free (check, EMPTY);
		1260	#if EV_ASYNC_ENABLE
		1261	array_free (async, EMPTY);
		1262	#endif
991		1263
992	backend = 0;	1264	backend = 0;
993	}	1265	}
994		1266
995	void inline_size infy_fork (EV_P);	1267	void inline_size infy_fork (EV_P);
…		…
1008	#endif	1280	#endif
1009	#if EV_USE_INOTIFY	1281	#if EV_USE_INOTIFY
1010	infy_fork (EV_A);	1282	infy_fork (EV_A);
1011	#endif	1283	#endif
1012		1284
1013	if (ev_is_active (&sigev))	1285	if (ev_is_active (&pipeev))
1014	{	1286	{
1015	/* default loop */	1287	/* this "locks" the handlers against writing to the pipe */
		1288	/* while we modify the fd vars */
		1289	gotsig = 1;
		1290	#if EV_ASYNC_ENABLE
		1291	gotasync = 1;
		1292	#endif
1016		1293
1017	ev_ref (EV_A);	1294	ev_ref (EV_A);
1018	ev_io_stop (EV_A_ &sigev);	1295	ev_io_stop (EV_A_ &pipeev);
		1296
		1297	#if EV_USE_EVENTFD
		1298	if (evfd >= 0)
		1299	close (evfd);
		1300	#endif
		1301
		1302	if (evpipe [0] >= 0)
		1303	{
1019	close (sigpipe [0]);	1304	close (evpipe [0]);
1020	close (sigpipe [1]);	1305	close (evpipe [1]);
		1306	}
1021		1307
1022	while (pipe (sigpipe))
1023	syserr ("(libev) error creating pipe");
1024
1025	siginit (EV_A);	1308	evpipe_init (EV_A);
		1309	/* now iterate over everything, in case we missed something */
		1310	pipecb (EV_A_ &pipeev, EV_READ);
1026	}	1311	}
1027		1312
1028	postfork = 0;	1313	postfork = 0;
1029	}	1314	}
1030		1315
…		…
1052	}	1337	}
1053		1338
1054	void	1339	void
1055	ev_loop_fork (EV_P)	1340	ev_loop_fork (EV_P)
1056	{	1341	{
1057	postfork = 1;	1342	postfork = 1; /* must be in line with ev_default_fork */
1058	}	1343	}
1059		1344
1060	#endif	1345	#endif
1061		1346
1062	#if EV_MULTIPLICITY	1347	#if EV_MULTIPLICITY
…		…
1065	#else	1350	#else
1066	int	1351	int
1067	ev_default_loop (unsigned int flags)	1352	ev_default_loop (unsigned int flags)
1068	#endif	1353	#endif
1069	{	1354	{
1070	if (sigpipe [0] == sigpipe [1])
1071	if (pipe (sigpipe))
1072	return 0;
1073
1074	if (!ev_default_loop_ptr)	1355	if (!ev_default_loop_ptr)
1075	{	1356	{
1076	#if EV_MULTIPLICITY	1357	#if EV_MULTIPLICITY
1077	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1358	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1078	#else	1359	#else
…		…
1081		1362
1082	loop_init (EV_A_ flags);	1363	loop_init (EV_A_ flags);
1083		1364
1084	if (ev_backend (EV_A))	1365	if (ev_backend (EV_A))
1085	{	1366	{
1086	siginit (EV_A);
1087
1088	#ifndef _WIN32	1367	#ifndef _WIN32
1089	ev_signal_init (&childev, childcb, SIGCHLD);	1368	ev_signal_init (&childev, childcb, SIGCHLD);
1090	ev_set_priority (&childev, EV_MAXPRI);	1369	ev_set_priority (&childev, EV_MAXPRI);
1091	ev_signal_start (EV_A_ &childev);	1370	ev_signal_start (EV_A_ &childev);
1092	ev_unref (EV_A); /* child watcher should not keep loop alive */	1371	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1109	#ifndef _WIN32	1388	#ifndef _WIN32
1110	ev_ref (EV_A); /* child watcher */	1389	ev_ref (EV_A); /* child watcher */
1111	ev_signal_stop (EV_A_ &childev);	1390	ev_signal_stop (EV_A_ &childev);
1112	#endif	1391	#endif
1113		1392
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);	1393	loop_destroy (EV_A);
1121	}	1394	}
1122		1395
1123	void	1396	void
1124	ev_default_fork (void)	1397	ev_default_fork (void)
…		…
1126	#if EV_MULTIPLICITY	1399	#if EV_MULTIPLICITY
1127	struct ev_loop *loop = ev_default_loop_ptr;	1400	struct ev_loop *loop = ev_default_loop_ptr;
1128	#endif	1401	#endif
1129		1402
1130	if (backend)	1403	if (backend)
1131	postfork = 1;	1404	postfork = 1; /* must be in line with ev_loop_fork */
1132	}	1405	}
1133		1406
1134	/*****************************************************************************/	1407	/*****************************************************************************/
1135		1408
1136	int inline_size	1409	void
1137	any_pending (EV_P)	1410	ev_invoke (EV_P_ void *w, int revents)
1138	{	1411	{
1139	int pri;	1412	EV_CB_INVOKE ((W)w, revents);
1140
1141	for (pri = NUMPRI; pri--; )
1142	if (pendingcnt [pri])
1143	return 1;
1144
1145	return 0;
1146	}	1413	}
1147		1414
1148	void inline_speed	1415	void inline_speed
1149	call_pending (EV_P)	1416	call_pending (EV_P)
1150	{	1417	{
…		…
1168	void inline_size	1435	void inline_size
1169	timers_reify (EV_P)	1436	timers_reify (EV_P)
1170	{	1437	{
1171	while (timercnt && ((WT)timers [0])->at <= mn_now)	1438	while (timercnt && ((WT)timers [0])->at <= mn_now)
1172	{	1439	{
1173	ev_timer *w = timers [0];	1440	ev_timer w = (ev_timer )timers [0];
1174		1441
1175	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/	1442	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1176		1443
1177	/* first reschedule or stop timer */	1444	/* first reschedule or stop timer */
1178	if (w->repeat)	1445	if (w->repeat)
…		…
1181		1448
1182	((WT)w)->at += w->repeat;	1449	((WT)w)->at += w->repeat;
1183	if (((WT)w)->at < mn_now)	1450	if (((WT)w)->at < mn_now)
1184	((WT)w)->at = mn_now;	1451	((WT)w)->at = mn_now;
1185		1452
1186	downheap ((WT *)timers, timercnt, 0);	1453	downheap (timers, timercnt, 0);
1187	}	1454	}
1188	else	1455	else
1189	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1456	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1190		1457
1191	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1458	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1196	void inline_size	1463	void inline_size
1197	periodics_reify (EV_P)	1464	periodics_reify (EV_P)
1198	{	1465	{
1199	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1466	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1200	{	1467	{
1201	ev_periodic *w = periodics [0];	1468	ev_periodic w = (ev_periodic )periodics [0];
1202		1469
1203	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/	1470	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1204		1471
1205	/* first reschedule or stop timer */	1472	/* first reschedule or stop timer */
1206	if (w->reschedule_cb)	1473	if (w->reschedule_cb)
1207	{	1474	{
1208	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1475	((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));	1476	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1210	downheap ((WT *)periodics, periodiccnt, 0);	1477	downheap (periodics, periodiccnt, 0);
1211	}	1478	}
1212	else if (w->interval)	1479	else if (w->interval)
1213	{	1480	{
1214	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1481	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1482	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));	1483	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);	1484	downheap (periodics, periodiccnt, 0);
1217	}	1485	}
1218	else	1486	else
1219	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1487	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1220		1488
1221	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1489	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1228	int i;	1496	int i;
1229		1497
1230	/* adjust periodics after time jump */	1498	/* adjust periodics after time jump */
1231	for (i = 0; i < periodiccnt; ++i)	1499	for (i = 0; i < periodiccnt; ++i)
1232	{	1500	{
1233	ev_periodic *w = periodics [i];	1501	ev_periodic w = (ev_periodic )periodics [i];
1234		1502
1235	if (w->reschedule_cb)	1503	if (w->reschedule_cb)
1236	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1504	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1237	else if (w->interval)	1505	else if (w->interval)
1238	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1506	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1239	}	1507	}
1240		1508
1241	/* now rebuild the heap */	1509	/* now rebuild the heap */
1242	for (i = periodiccnt >> 1; i--; )	1510	for (i = periodiccnt >> 1; i--; )
1243	downheap ((WT *)periodics, periodiccnt, i);	1511	downheap (periodics, periodiccnt, i);
1244	}	1512	}
1245	#endif	1513	#endif
1246		1514
		1515	#if EV_IDLE_ENABLE
1247	int inline_size	1516	void inline_size
1248	time_update_monotonic (EV_P)	1517	idle_reify (EV_P)
1249	{	1518	{
		1519	if (expect_false (idleall))
		1520	{
		1521	int pri;
		1522
		1523	for (pri = NUMPRI; pri--; )
		1524	{
		1525	if (pendingcnt [pri])
		1526	break;
		1527
		1528	if (idlecnt [pri])
		1529	{
		1530	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1531	break;
		1532	}
		1533	}
		1534	}
		1535	}
		1536	#endif
		1537
		1538	void inline_speed
		1539	time_update (EV_P_ ev_tstamp max_block)
		1540	{
		1541	int i;
		1542
		1543	#if EV_USE_MONOTONIC
		1544	if (expect_true (have_monotonic))
		1545	{
		1546	ev_tstamp odiff = rtmn_diff;
		1547
1250	mn_now = get_clock ();	1548	mn_now = get_clock ();
1251		1549
		1550	/* only fetch the realtime clock every 0.5MIN_TIMEJUMP seconds /
		1551	/* interpolate in the meantime */
1252	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1552	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1253	{	1553	{
1254	ev_rt_now = rtmn_diff + mn_now;	1554	ev_rt_now = rtmn_diff + mn_now;
1255	return 0;	1555	return;
1256	}	1556	}
1257	else	1557
1258	{
1259	now_floor = mn_now;	1558	now_floor = mn_now;
1260	ev_rt_now = ev_time ();	1559	ev_rt_now = ev_time ();
1261	return 1;
1262	}
1263	}
1264		1560
1265	void inline_size	1561	/* loop a few times, before making important decisions.
1266	time_update (EV_P)	1562	* on the choice of "4": one iteration isn't enough,
1267	{	1563	* in case we get preempted during the calls to
1268	int i;	1564	* ev_time and get_clock. a second call is almost guaranteed
1269		1565	* to succeed in that case, though. and looping a few more times
1270	#if EV_USE_MONOTONIC	1566	* doesn't hurt either as we only do this on time-jumps or
1271	if (expect_true (have_monotonic))	1567	* in the unlikely event of having been preempted here.
1272	{	1568	*/
1273	if (time_update_monotonic (EV_A))	1569	for (i = 4; --i; )
1274	{	1570	{
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;	1571	rtmn_diff = ev_rt_now - mn_now;
1288		1572
1289	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1573	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1290	return; /* all is well */	1574	return; /* all is well */
1291		1575
1292	ev_rt_now = ev_time ();	1576	ev_rt_now = ev_time ();
1293	mn_now = get_clock ();	1577	mn_now = get_clock ();
1294	now_floor = mn_now;	1578	now_floor = mn_now;
1295	}	1579	}
1296		1580
1297	# if EV_PERIODIC_ENABLE	1581	# if EV_PERIODIC_ENABLE
1298	periodics_reschedule (EV_A);	1582	periodics_reschedule (EV_A);
1299	# endif	1583	# endif
1300	/* no timer adjustment, as the monotonic clock doesn't jump */	1584	/* no timer adjustment, as the monotonic clock doesn't jump */
1301	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1585	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1302	}
1303	}	1586	}
1304	else	1587	else
1305	#endif	1588	#endif
1306	{	1589	{
1307	ev_rt_now = ev_time ();	1590	ev_rt_now = ev_time ();
1308		1591
1309	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1592	if (expect_false (mn_now > ev_rt_now \|\| ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1310	{	1593	{
1311	#if EV_PERIODIC_ENABLE	1594	#if EV_PERIODIC_ENABLE
1312	periodics_reschedule (EV_A);	1595	periodics_reschedule (EV_A);
1313	#endif	1596	#endif
1314
1315	/* adjust timers. this is easy, as the offset is the same for all of them */	1597	/* adjust timers. this is easy, as the offset is the same for all of them */
1316	for (i = 0; i < timercnt; ++i)	1598	for (i = 0; i < timercnt; ++i)
1317	((WT)timers [i])->at += ev_rt_now - mn_now;	1599	((WT)timers [i])->at += ev_rt_now - mn_now;
1318	}	1600	}
1319		1601
…		…
1336	static int loop_done;	1618	static int loop_done;
1337		1619
1338	void	1620	void
1339	ev_loop (EV_P_ int flags)	1621	ev_loop (EV_P_ int flags)
1340	{	1622	{
1341	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)	1623	loop_done = EVUNLOOP_CANCEL;
1342	? EVUNLOOP_ONE
1343	: EVUNLOOP_CANCEL;
1344		1624
1345	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1625	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1346		1626
1347	while (activecnt)	1627	do
1348	{	1628	{
1349	#ifndef _WIN32	1629	#ifndef _WIN32
1350	if (expect_false (curpid)) /* penalise the forking check even more */	1630	if (expect_false (curpid)) /* penalise the forking check even more */
1351	if (expect_false (getpid () != curpid))	1631	if (expect_false (getpid () != curpid))
1352	{	1632	{
…		…
1363	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	1643	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1364	call_pending (EV_A);	1644	call_pending (EV_A);
1365	}	1645	}
1366	#endif	1646	#endif
1367		1647
1368	/* queue check watchers (and execute them) */	1648	/* queue prepare watchers (and execute them) */
1369	if (expect_false (preparecnt))	1649	if (expect_false (preparecnt))
1370	{	1650	{
1371	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1651	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1372	call_pending (EV_A);	1652	call_pending (EV_A);
1373	}	1653	}
1374		1654
		1655	if (expect_false (!activecnt))
		1656	break;
		1657
1375	/* we might have forked, so reify kernel state if necessary */	1658	/* we might have forked, so reify kernel state if necessary */
1376	if (expect_false (postfork))	1659	if (expect_false (postfork))
1377	loop_fork (EV_A);	1660	loop_fork (EV_A);
1378		1661
1379	/* update fd-related kernel structures */	1662	/* update fd-related kernel structures */
1380	fd_reify (EV_A);	1663	fd_reify (EV_A);
1381		1664
1382	/* calculate blocking time */	1665	/* calculate blocking time */
1383	{	1666	{
1384	ev_tstamp block;	1667	ev_tstamp waittime = 0.;
		1668	ev_tstamp sleeptime = 0.;
1385		1669
1386	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1670	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1387	block = 0.; /* do not block at all */
1388	else
1389	{	1671	{
1390	/* update time to cancel out callback processing overhead */	1672	/* update time to cancel out callback processing overhead */
1391	#if EV_USE_MONOTONIC
1392	if (expect_true (have_monotonic))
1393	time_update_monotonic (EV_A);	1673	time_update (EV_A_ 1e100);
1394	else
1395	#endif
1396	{
1397	ev_rt_now = ev_time ();
1398	mn_now = ev_rt_now;
1399	}
1400		1674
1401	block = MAX_BLOCKTIME;	1675	waittime = MAX_BLOCKTIME;
1402		1676
1403	if (timercnt)	1677	if (timercnt)
1404	{	1678	{
1405	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1679	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1406	if (block > to) block = to;	1680	if (waittime > to) waittime = to;
1407	}	1681	}
1408		1682
1409	#if EV_PERIODIC_ENABLE	1683	#if EV_PERIODIC_ENABLE
1410	if (periodiccnt)	1684	if (periodiccnt)
1411	{	1685	{
1412	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1686	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1413	if (block > to) block = to;	1687	if (waittime > to) waittime = to;
1414	}	1688	}
1415	#endif	1689	#endif
1416		1690
1417	if (expect_false (block < 0.)) block = 0.;	1691	if (expect_false (waittime < timeout_blocktime))
		1692	waittime = timeout_blocktime;
		1693
		1694	sleeptime = waittime - backend_fudge;
		1695
		1696	if (expect_true (sleeptime > io_blocktime))
		1697	sleeptime = io_blocktime;
		1698
		1699	if (sleeptime)
		1700	{
		1701	ev_sleep (sleeptime);
		1702	waittime -= sleeptime;
		1703	}
1418	}	1704	}
1419		1705
		1706	++loop_count;
1420	backend_poll (EV_A_ block);	1707	backend_poll (EV_A_ waittime);
		1708
		1709	/* update ev_rt_now, do magic */
		1710	time_update (EV_A_ waittime + sleeptime);
1421	}	1711	}
1422
1423	/* update ev_rt_now, do magic */
1424	time_update (EV_A);
1425		1712
1426	/* queue pending timers and reschedule them */	1713	/* queue pending timers and reschedule them */
1427	timers_reify (EV_A); /* relative timers called last */	1714	timers_reify (EV_A); /* relative timers called last */
1428	#if EV_PERIODIC_ENABLE	1715	#if EV_PERIODIC_ENABLE
1429	periodics_reify (EV_A); /* absolute timers called first */	1716	periodics_reify (EV_A); /* absolute timers called first */
1430	#endif	1717	#endif
1431		1718
		1719	#if EV_IDLE_ENABLE
1432	/* queue idle watchers unless other events are pending */	1720	/* queue idle watchers unless other events are pending */
1433	if (idlecnt && !any_pending (EV_A))	1721	idle_reify (EV_A);
1434	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1722	#endif
1435		1723
1436	/* queue check watchers, to be executed first */	1724	/* queue check watchers, to be executed first */
1437	if (expect_false (checkcnt))	1725	if (expect_false (checkcnt))
1438	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1726	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1439		1727
1440	call_pending (EV_A);	1728	call_pending (EV_A);
1441
1442	if (expect_false (loop_done))
1443	break;
1444	}	1729	}
		1730	while (expect_true (
		1731	activecnt
		1732	&& !loop_done
		1733	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))
		1734	));
1445		1735
1446	if (loop_done == EVUNLOOP_ONE)	1736	if (loop_done == EVUNLOOP_ONE)
1447	loop_done = EVUNLOOP_CANCEL;	1737	loop_done = EVUNLOOP_CANCEL;
1448	}	1738	}
1449		1739
…		…
1476	head = &(*head)->next;	1766	head = &(*head)->next;
1477	}	1767	}
1478	}	1768	}
1479		1769
1480	void inline_speed	1770	void inline_speed
1481	ev_clear_pending (EV_P_ W w)	1771	clear_pending (EV_P_ W w)
1482	{	1772	{
1483	if (w->pending)	1773	if (w->pending)
1484	{	1774	{
1485	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1775	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1486	w->pending = 0;	1776	w->pending = 0;
1487	}	1777	}
1488	}	1778	}
1489		1779
		1780	int
		1781	ev_clear_pending (EV_P_ void *w)
		1782	{
		1783	W w_ = (W)w;
		1784	int pending = w_->pending;
		1785
		1786	if (expect_true (pending))
		1787	{
		1788	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1789	w_->pending = 0;
		1790	p->w = 0;
		1791	return p->events;
		1792	}
		1793	else
		1794	return 0;
		1795	}
		1796
		1797	void inline_size
		1798	pri_adjust (EV_P_ W w)
		1799	{
		1800	int pri = w->priority;
		1801	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1802	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1803	w->priority = pri;
		1804	}
		1805
1490	void inline_speed	1806	void inline_speed
1491	ev_start (EV_P_ W w, int active)	1807	ev_start (EV_P_ W w, int active)
1492	{	1808	{
1493	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1809	pri_adjust (EV_A_ w);
1494	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1495
1496	w->active = active;	1810	w->active = active;
1497	ev_ref (EV_A);	1811	ev_ref (EV_A);
1498	}	1812	}
1499		1813
1500	void inline_size	1814	void inline_size
…		…
1504	w->active = 0;	1818	w->active = 0;
1505	}	1819	}
1506		1820
1507	/*****************************************************************************/	1821	/*****************************************************************************/
1508		1822
1509	void	1823	void noinline
1510	ev_io_start (EV_P_ ev_io *w)	1824	ev_io_start (EV_P_ ev_io *w)
1511	{	1825	{
1512	int fd = w->fd;	1826	int fd = w->fd;
1513		1827
1514	if (expect_false (ev_is_active (w)))	1828	if (expect_false (ev_is_active (w)))
…		…
1516		1830
1517	assert (("ev_io_start called with negative fd", fd >= 0));	1831	assert (("ev_io_start called with negative fd", fd >= 0));
1518		1832
1519	ev_start (EV_A_ (W)w, 1);	1833	ev_start (EV_A_ (W)w, 1);
1520	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1834	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1521	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1835	wlist_add (&anfds[fd].head, (WL)w);
1522		1836
1523	fd_change (EV_A_ fd);	1837	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);
		1838	w->events &= ~EV_IOFDSET;
1524	}	1839	}
1525		1840
1526	void	1841	void noinline
1527	ev_io_stop (EV_P_ ev_io *w)	1842	ev_io_stop (EV_P_ ev_io *w)
1528	{	1843	{
1529	ev_clear_pending (EV_A_ (W)w);	1844	clear_pending (EV_A_ (W)w);
1530	if (expect_false (!ev_is_active (w)))	1845	if (expect_false (!ev_is_active (w)))
1531	return;	1846	return;
1532		1847
1533	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1848	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1534		1849
1535	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1850	wlist_del (&anfds[w->fd].head, (WL)w);
1536	ev_stop (EV_A_ (W)w);	1851	ev_stop (EV_A_ (W)w);
1537		1852
1538	fd_change (EV_A_ w->fd);	1853	fd_change (EV_A_ w->fd, 1);
1539	}	1854	}
1540		1855
1541	void	1856	void noinline
1542	ev_timer_start (EV_P_ ev_timer *w)	1857	ev_timer_start (EV_P_ ev_timer *w)
1543	{	1858	{
1544	if (expect_false (ev_is_active (w)))	1859	if (expect_false (ev_is_active (w)))
1545	return;	1860	return;
1546		1861
1547	((WT)w)->at += mn_now;	1862	((WT)w)->at += mn_now;
1548		1863
1549	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1864	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1550		1865
1551	ev_start (EV_A_ (W)w, ++timercnt);	1866	ev_start (EV_A_ (W)w, ++timercnt);
1552	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1867	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1553	timers [timercnt - 1] = w;	1868	timers [timercnt - 1] = (WT)w;
1554	upheap ((WT *)timers, timercnt - 1);	1869	upheap (timers, timercnt - 1);
1555		1870
1556	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/	1871	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
1557	}	1872	}
1558		1873
1559	void	1874	void noinline
1560	ev_timer_stop (EV_P_ ev_timer *w)	1875	ev_timer_stop (EV_P_ ev_timer *w)
1561	{	1876	{
1562	ev_clear_pending (EV_A_ (W)w);	1877	clear_pending (EV_A_ (W)w);
1563	if (expect_false (!ev_is_active (w)))	1878	if (expect_false (!ev_is_active (w)))
1564	return;	1879	return;
1565		1880
1566	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1881	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1567		1882
1568	{	1883	{
1569	int active = ((W)w)->active;	1884	int active = ((W)w)->active;
1570		1885
1571	if (expect_true (--active < --timercnt))	1886	if (expect_true (--active < --timercnt))
1572	{	1887	{
1573	timers [active] = timers [timercnt];	1888	timers [active] = timers [timercnt];
1574	adjustheap ((WT *)timers, timercnt, active);	1889	adjustheap (timers, timercnt, active);
1575	}	1890	}
1576	}	1891	}
1577		1892
1578	((WT)w)->at -= mn_now;	1893	((WT)w)->at -= mn_now;
1579		1894
1580	ev_stop (EV_A_ (W)w);	1895	ev_stop (EV_A_ (W)w);
1581	}	1896	}
1582		1897
1583	void	1898	void noinline
1584	ev_timer_again (EV_P_ ev_timer *w)	1899	ev_timer_again (EV_P_ ev_timer *w)
1585	{	1900	{
1586	if (ev_is_active (w))	1901	if (ev_is_active (w))
1587	{	1902	{
1588	if (w->repeat)	1903	if (w->repeat)
1589	{	1904	{
1590	((WT)w)->at = mn_now + w->repeat;	1905	((WT)w)->at = mn_now + w->repeat;
1591	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1906	adjustheap (timers, timercnt, ((W)w)->active - 1);
1592	}	1907	}
1593	else	1908	else
1594	ev_timer_stop (EV_A_ w);	1909	ev_timer_stop (EV_A_ w);
1595	}	1910	}
1596	else if (w->repeat)	1911	else if (w->repeat)
…		…
1599	ev_timer_start (EV_A_ w);	1914	ev_timer_start (EV_A_ w);
1600	}	1915	}
1601	}	1916	}
1602		1917
1603	#if EV_PERIODIC_ENABLE	1918	#if EV_PERIODIC_ENABLE
1604	void	1919	void noinline
1605	ev_periodic_start (EV_P_ ev_periodic *w)	1920	ev_periodic_start (EV_P_ ev_periodic *w)
1606	{	1921	{
1607	if (expect_false (ev_is_active (w)))	1922	if (expect_false (ev_is_active (w)))
1608	return;	1923	return;
1609		1924
…		…
1611	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1926	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1612	else if (w->interval)	1927	else if (w->interval)
1613	{	1928	{
1614	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1929	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1615	/* this formula differs from the one in periodic_reify because we do not always round up */	1930	/* this formula differs from the one in periodic_reify because we do not always round up */
1616	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1931	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1617	}	1932	}
		1933	else
		1934	((WT)w)->at = w->offset;
1618		1935
1619	ev_start (EV_A_ (W)w, ++periodiccnt);	1936	ev_start (EV_A_ (W)w, ++periodiccnt);
1620	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1937	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1621	periodics [periodiccnt - 1] = w;	1938	periodics [periodiccnt - 1] = (WT)w;
1622	upheap ((WT *)periodics, periodiccnt - 1);	1939	upheap (periodics, periodiccnt - 1);
1623		1940
1624	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/	1941	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
1625	}	1942	}
1626		1943
1627	void	1944	void noinline
1628	ev_periodic_stop (EV_P_ ev_periodic *w)	1945	ev_periodic_stop (EV_P_ ev_periodic *w)
1629	{	1946	{
1630	ev_clear_pending (EV_A_ (W)w);	1947	clear_pending (EV_A_ (W)w);
1631	if (expect_false (!ev_is_active (w)))	1948	if (expect_false (!ev_is_active (w)))
1632	return;	1949	return;
1633		1950
1634	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1951	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1635		1952
1636	{	1953	{
1637	int active = ((W)w)->active;	1954	int active = ((W)w)->active;
1638		1955
1639	if (expect_true (--active < --periodiccnt))	1956	if (expect_true (--active < --periodiccnt))
1640	{	1957	{
1641	periodics [active] = periodics [periodiccnt];	1958	periodics [active] = periodics [periodiccnt];
1642	adjustheap ((WT *)periodics, periodiccnt, active);	1959	adjustheap (periodics, periodiccnt, active);
1643	}	1960	}
1644	}	1961	}
1645		1962
1646	ev_stop (EV_A_ (W)w);	1963	ev_stop (EV_A_ (W)w);
1647	}	1964	}
1648		1965
1649	void	1966	void noinline
1650	ev_periodic_again (EV_P_ ev_periodic *w)	1967	ev_periodic_again (EV_P_ ev_periodic *w)
1651	{	1968	{
1652	/* TODO: use adjustheap and recalculation */	1969	/* TODO: use adjustheap and recalculation */
1653	ev_periodic_stop (EV_A_ w);	1970	ev_periodic_stop (EV_A_ w);
1654	ev_periodic_start (EV_A_ w);	1971	ev_periodic_start (EV_A_ w);
…		…
1657		1974
1658	#ifndef SA_RESTART	1975	#ifndef SA_RESTART
1659	# define SA_RESTART 0	1976	# define SA_RESTART 0
1660	#endif	1977	#endif
1661		1978
1662	void	1979	void noinline
1663	ev_signal_start (EV_P_ ev_signal *w)	1980	ev_signal_start (EV_P_ ev_signal *w)
1664	{	1981	{
1665	#if EV_MULTIPLICITY	1982	#if EV_MULTIPLICITY
1666	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1983	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1667	#endif	1984	#endif
1668	if (expect_false (ev_is_active (w)))	1985	if (expect_false (ev_is_active (w)))
1669	return;	1986	return;
1670		1987
1671	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1988	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1672		1989
		1990	evpipe_init (EV_A);
		1991
		1992	{
		1993	#ifndef _WIN32
		1994	sigset_t full, prev;
		1995	sigfillset (&full);
		1996	sigprocmask (SIG_SETMASK, &full, &prev);
		1997	#endif
		1998
		1999	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		2000
		2001	#ifndef _WIN32
		2002	sigprocmask (SIG_SETMASK, &prev, 0);
		2003	#endif
		2004	}
		2005
1673	ev_start (EV_A_ (W)w, 1);	2006	ev_start (EV_A_ (W)w, 1);
1674	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1675	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2007	wlist_add (&signals [w->signum - 1].head, (WL)w);
1676		2008
1677	if (!((WL)w)->next)	2009	if (!((WL)w)->next)
1678	{	2010	{
1679	#if _WIN32	2011	#if _WIN32
1680	signal (w->signum, sighandler);	2012	signal (w->signum, ev_sighandler);
1681	#else	2013	#else
1682	struct sigaction sa;	2014	struct sigaction sa;
1683	sa.sa_handler = sighandler;	2015	sa.sa_handler = ev_sighandler;
1684	sigfillset (&sa.sa_mask);	2016	sigfillset (&sa.sa_mask);
1685	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2017	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1686	sigaction (w->signum, &sa, 0);	2018	sigaction (w->signum, &sa, 0);
1687	#endif	2019	#endif
1688	}	2020	}
1689	}	2021	}
1690		2022
1691	void	2023	void noinline
1692	ev_signal_stop (EV_P_ ev_signal *w)	2024	ev_signal_stop (EV_P_ ev_signal *w)
1693	{	2025	{
1694	ev_clear_pending (EV_A_ (W)w);	2026	clear_pending (EV_A_ (W)w);
1695	if (expect_false (!ev_is_active (w)))	2027	if (expect_false (!ev_is_active (w)))
1696	return;	2028	return;
1697		2029
1698	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2030	wlist_del (&signals [w->signum - 1].head, (WL)w);
1699	ev_stop (EV_A_ (W)w);	2031	ev_stop (EV_A_ (W)w);
1700		2032
1701	if (!signals [w->signum - 1].head)	2033	if (!signals [w->signum - 1].head)
1702	signal (w->signum, SIG_DFL);	2034	signal (w->signum, SIG_DFL);
1703	}	2035	}
…		…
1710	#endif	2042	#endif
1711	if (expect_false (ev_is_active (w)))	2043	if (expect_false (ev_is_active (w)))
1712	return;	2044	return;
1713		2045
1714	ev_start (EV_A_ (W)w, 1);	2046	ev_start (EV_A_ (W)w, 1);
1715	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2047	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1716	}	2048	}
1717		2049
1718	void	2050	void
1719	ev_child_stop (EV_P_ ev_child *w)	2051	ev_child_stop (EV_P_ ev_child *w)
1720	{	2052	{
1721	ev_clear_pending (EV_A_ (W)w);	2053	clear_pending (EV_A_ (W)w);
1722	if (expect_false (!ev_is_active (w)))	2054	if (expect_false (!ev_is_active (w)))
1723	return;	2055	return;
1724		2056
1725	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2057	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1726	ev_stop (EV_A_ (W)w);	2058	ev_stop (EV_A_ (W)w);
1727	}	2059	}
1728		2060
1729	#if EV_STAT_ENABLE	2061	#if EV_STAT_ENABLE
1730		2062
…		…
1962	}	2294	}
1963		2295
1964	void	2296	void
1965	ev_stat_stop (EV_P_ ev_stat *w)	2297	ev_stat_stop (EV_P_ ev_stat *w)
1966	{	2298	{
1967	ev_clear_pending (EV_A_ (W)w);	2299	clear_pending (EV_A_ (W)w);
1968	if (expect_false (!ev_is_active (w)))	2300	if (expect_false (!ev_is_active (w)))
1969	return;	2301	return;
1970		2302
1971	#if EV_USE_INOTIFY	2303	#if EV_USE_INOTIFY
1972	infy_del (EV_A_ w);	2304	infy_del (EV_A_ w);
…		…
1975		2307
1976	ev_stop (EV_A_ (W)w);	2308	ev_stop (EV_A_ (W)w);
1977	}	2309	}
1978	#endif	2310	#endif
1979		2311
		2312	#if EV_IDLE_ENABLE
1980	void	2313	void
1981	ev_idle_start (EV_P_ ev_idle *w)	2314	ev_idle_start (EV_P_ ev_idle *w)
1982	{	2315	{
1983	if (expect_false (ev_is_active (w)))	2316	if (expect_false (ev_is_active (w)))
1984	return;	2317	return;
1985		2318
		2319	pri_adjust (EV_A_ (W)w);
		2320
		2321	{
		2322	int active = ++idlecnt [ABSPRI (w)];
		2323
		2324	++idleall;
1986	ev_start (EV_A_ (W)w, ++idlecnt);	2325	ev_start (EV_A_ (W)w, active);
		2326
1987	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);	2327	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1988	idles [idlecnt - 1] = w;	2328	idles [ABSPRI (w)][active - 1] = w;
		2329	}
1989	}	2330	}
1990		2331
1991	void	2332	void
1992	ev_idle_stop (EV_P_ ev_idle *w)	2333	ev_idle_stop (EV_P_ ev_idle *w)
1993	{	2334	{
1994	ev_clear_pending (EV_A_ (W)w);	2335	clear_pending (EV_A_ (W)w);
1995	if (expect_false (!ev_is_active (w)))	2336	if (expect_false (!ev_is_active (w)))
1996	return;	2337	return;
1997		2338
1998	{	2339	{
1999	int active = ((W)w)->active;	2340	int active = ((W)w)->active;
2000	idles [active - 1] = idles [--idlecnt];	2341
		2342	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2001	((W)idles [active - 1])->active = active;	2343	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2344
		2345	ev_stop (EV_A_ (W)w);
		2346	--idleall;
2002	}	2347	}
2003
2004	ev_stop (EV_A_ (W)w);
2005	}	2348	}
		2349	#endif
2006		2350
2007	void	2351	void
2008	ev_prepare_start (EV_P_ ev_prepare *w)	2352	ev_prepare_start (EV_P_ ev_prepare *w)
2009	{	2353	{
2010	if (expect_false (ev_is_active (w)))	2354	if (expect_false (ev_is_active (w)))
…		…
2016	}	2360	}
2017		2361
2018	void	2362	void
2019	ev_prepare_stop (EV_P_ ev_prepare *w)	2363	ev_prepare_stop (EV_P_ ev_prepare *w)
2020	{	2364	{
2021	ev_clear_pending (EV_A_ (W)w);	2365	clear_pending (EV_A_ (W)w);
2022	if (expect_false (!ev_is_active (w)))	2366	if (expect_false (!ev_is_active (w)))
2023	return;	2367	return;
2024		2368
2025	{	2369	{
2026	int active = ((W)w)->active;	2370	int active = ((W)w)->active;
…		…
2043	}	2387	}
2044		2388
2045	void	2389	void
2046	ev_check_stop (EV_P_ ev_check *w)	2390	ev_check_stop (EV_P_ ev_check *w)
2047	{	2391	{
2048	ev_clear_pending (EV_A_ (W)w);	2392	clear_pending (EV_A_ (W)w);
2049	if (expect_false (!ev_is_active (w)))	2393	if (expect_false (!ev_is_active (w)))
2050	return;	2394	return;
2051		2395
2052	{	2396	{
2053	int active = ((W)w)->active;	2397	int active = ((W)w)->active;
…		…
2060		2404
2061	#if EV_EMBED_ENABLE	2405	#if EV_EMBED_ENABLE
2062	void noinline	2406	void noinline
2063	ev_embed_sweep (EV_P_ ev_embed *w)	2407	ev_embed_sweep (EV_P_ ev_embed *w)
2064	{	2408	{
2065	ev_loop (w->loop, EVLOOP_NONBLOCK);	2409	ev_loop (w->other, EVLOOP_NONBLOCK);
2066	}	2410	}
2067		2411
2068	static void	2412	static void
2069	embed_cb (EV_P_ ev_io *io, int revents)	2413	embed_io_cb (EV_P_ ev_io *io, int revents)
2070	{	2414	{
2071	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2415	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
2072		2416
2073	if (ev_cb (w))	2417	if (ev_cb (w))
2074	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2418	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2075	else	2419	else
2076	ev_embed_sweep (loop, w);	2420	ev_loop (w->other, EVLOOP_NONBLOCK);
2077	}	2421	}
		2422
		2423	static void
		2424	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2425	{
		2426	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
		2427
		2428	{
		2429	struct ev_loop *loop = w->other;
		2430
		2431	while (fdchangecnt)
		2432	{
		2433	fd_reify (EV_A);
		2434	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2435	}
		2436	}
		2437	}
		2438
		2439	#if 0
		2440	static void
		2441	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2442	{
		2443	ev_idle_stop (EV_A_ idle);
		2444	}
		2445	#endif
2078		2446
2079	void	2447	void
2080	ev_embed_start (EV_P_ ev_embed *w)	2448	ev_embed_start (EV_P_ ev_embed *w)
2081	{	2449	{
2082	if (expect_false (ev_is_active (w)))	2450	if (expect_false (ev_is_active (w)))
2083	return;	2451	return;
2084		2452
2085	{	2453	{
2086	struct ev_loop *loop = w->loop;	2454	struct ev_loop *loop = w->other;
2087	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2455	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2088	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2456	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2089	}	2457	}
2090		2458
2091	ev_set_priority (&w->io, ev_priority (w));	2459	ev_set_priority (&w->io, ev_priority (w));
2092	ev_io_start (EV_A_ &w->io);	2460	ev_io_start (EV_A_ &w->io);
2093		2461
		2462	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2463	ev_set_priority (&w->prepare, EV_MINPRI);
		2464	ev_prepare_start (EV_A_ &w->prepare);
		2465
		2466	/ev_idle_init (&w->idle, e,bed_idle_cb);/
		2467
2094	ev_start (EV_A_ (W)w, 1);	2468	ev_start (EV_A_ (W)w, 1);
2095	}	2469	}
2096		2470
2097	void	2471	void
2098	ev_embed_stop (EV_P_ ev_embed *w)	2472	ev_embed_stop (EV_P_ ev_embed *w)
2099	{	2473	{
2100	ev_clear_pending (EV_A_ (W)w);	2474	clear_pending (EV_A_ (W)w);
2101	if (expect_false (!ev_is_active (w)))	2475	if (expect_false (!ev_is_active (w)))
2102	return;	2476	return;
2103		2477
2104	ev_io_stop (EV_A_ &w->io);	2478	ev_io_stop (EV_A_ &w->io);
		2479	ev_prepare_stop (EV_A_ &w->prepare);
2105		2480
2106	ev_stop (EV_A_ (W)w);	2481	ev_stop (EV_A_ (W)w);
2107	}	2482	}
2108	#endif	2483	#endif
2109		2484
…		…
2120	}	2495	}
2121		2496
2122	void	2497	void
2123	ev_fork_stop (EV_P_ ev_fork *w)	2498	ev_fork_stop (EV_P_ ev_fork *w)
2124	{	2499	{
2125	ev_clear_pending (EV_A_ (W)w);	2500	clear_pending (EV_A_ (W)w);
2126	if (expect_false (!ev_is_active (w)))	2501	if (expect_false (!ev_is_active (w)))
2127	return;	2502	return;
2128		2503
2129	{	2504	{
2130	int active = ((W)w)->active;	2505	int active = ((W)w)->active;
…		…
2134		2509
2135	ev_stop (EV_A_ (W)w);	2510	ev_stop (EV_A_ (W)w);
2136	}	2511	}
2137	#endif	2512	#endif
2138		2513
		2514	#if EV_ASYNC_ENABLE
		2515	void
		2516	ev_async_start (EV_P_ ev_async *w)
		2517	{
		2518	if (expect_false (ev_is_active (w)))
		2519	return;
		2520
		2521	evpipe_init (EV_A);
		2522
		2523	ev_start (EV_A_ (W)w, ++asynccnt);
		2524	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2525	asyncs [asynccnt - 1] = w;
		2526	}
		2527
		2528	void
		2529	ev_async_stop (EV_P_ ev_async *w)
		2530	{
		2531	clear_pending (EV_A_ (W)w);
		2532	if (expect_false (!ev_is_active (w)))
		2533	return;
		2534
		2535	{
		2536	int active = ((W)w)->active;
		2537	asyncs [active - 1] = asyncs [--asynccnt];
		2538	((W)asyncs [active - 1])->active = active;
		2539	}
		2540
		2541	ev_stop (EV_A_ (W)w);
		2542	}
		2543
		2544	void
		2545	ev_async_send (EV_P_ ev_async *w)
		2546	{
		2547	w->sent = 1;
		2548	evpipe_write (EV_A_ &gotasync);
		2549	}
		2550	#endif
		2551
2139	/*****************************************************************************/	2552	/*****************************************************************************/
2140		2553
2141	struct ev_once	2554	struct ev_once
2142	{	2555	{
2143	ev_io io;	2556	ev_io io;
…		…
2198	ev_timer_set (&once->to, timeout, 0.);	2611	ev_timer_set (&once->to, timeout, 0.);
2199	ev_timer_start (EV_A_ &once->to);	2612	ev_timer_start (EV_A_ &once->to);
2200	}	2613	}
2201	}	2614	}
2202		2615
		2616	#if EV_MULTIPLICITY
		2617	#include "ev_wrap.h"
		2618	#endif
		2619
2203	#ifdef __cplusplus	2620	#ifdef __cplusplus
2204	}	2621	}
2205	#endif	2622	#endif
2206		2623

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Comparing libev/ev.c (file contents): Revision 1.158 by root, Thu Nov 29 17:28:13 2007 UTC vs. Revision 1.221 by root, Sun Apr 6 12:44:49 2008 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.158 by root, Thu Nov 29 17:28:13 2007 UTC vs.
Revision 1.221 by root, Sun Apr 6 12:44:49 2008 UTC