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Comparing libev/ev.c (file contents):
Revision 1.135 by root, Sat Nov 24 06:23:27 2007 UTC vs.
Revision 1.199 by root, Tue Dec 25 07:05:45 2007 UTC

…		…
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* modification, are permitted provided that the following conditions are	8	* tion, are permitted provided that the following conditions are met:
9	* met:	9	*
		10	* 1. Redistributions of source code must retain the above copyright notice,
		11	* this list of conditions and the following disclaimer.
		12	*
		13	* 2. Redistributions in binary form must reproduce the above copyright
		14	* notice, this list of conditions and the following disclaimer in the
		15	* documentation and/or other materials provided with the distribution.
		16	*
		17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
		18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
		19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
		20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
		21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
		22	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
		23	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
		24	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
		25	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
		26	* OF THE POSSIBILITY OF SUCH DAMAGE.
10	*	27	*
11	* * Redistributions of source code must retain the above copyright	28	* Alternatively, the contents of this file may be used under the terms of
12	* notice, this list of conditions and the following disclaimer.	29	* the GNU General Public License ("GPL") version 2 or any later version,
13	*	30	* in which case the provisions of the GPL are applicable instead of
14	* * Redistributions in binary form must reproduce the above	31	* the above. If you wish to allow the use of your version of this file
15	* copyright notice, this list of conditions and the following	32	* only under the terms of the GPL and not to allow others to use your
16	* disclaimer in the documentation and/or other materials provided	33	* version of this file under the BSD license, indicate your decision
17	* with the distribution.	34	* by deleting the provisions above and replace them with the notice
18	*	35	* and other provisions required by the GPL. If you do not delete the
19	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS	36	* provisions above, a recipient may use your version of this file under
20	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT	37	* either the BSD or the GPL.
21	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	38	*/
31		39
32	#ifdef __cplusplus	40	#ifdef __cplusplus
33	extern "C" {	41	extern "C" {
34	#endif	42	#endif
…		…
51	# ifndef EV_USE_MONOTONIC	59	# ifndef EV_USE_MONOTONIC
52	# define EV_USE_MONOTONIC 0	60	# define EV_USE_MONOTONIC 0
53	# endif	61	# endif
54	# ifndef EV_USE_REALTIME	62	# ifndef EV_USE_REALTIME
55	# define EV_USE_REALTIME 0	63	# define EV_USE_REALTIME 0
		64	# endif
		65	# endif
		66
		67	# ifndef EV_USE_NANOSLEEP
		68	# if HAVE_NANOSLEEP
		69	# define EV_USE_NANOSLEEP 1
		70	# else
		71	# define EV_USE_NANOSLEEP 0
56	# endif	72	# endif
57	# endif	73	# endif
58		74
59	# ifndef EV_USE_SELECT	75	# ifndef EV_USE_SELECT
60	# if HAVE_SELECT && HAVE_SYS_SELECT_H	76	# if HAVE_SELECT && HAVE_SYS_SELECT_H
…		…
94	# else	110	# else
95	# define EV_USE_PORT 0	111	# define EV_USE_PORT 0
96	# endif	112	# endif
97	# endif	113	# endif
98		114
		115	# ifndef EV_USE_INOTIFY
		116	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		117	# define EV_USE_INOTIFY 1
		118	# else
		119	# define EV_USE_INOTIFY 0
		120	# endif
		121	# endif
		122
99	#endif	123	#endif
100		124
101	#include <math.h>	125	#include <math.h>
102	#include <stdlib.h>	126	#include <stdlib.h>
103	#include <fcntl.h>	127	#include <fcntl.h>
…		…
110	#include <sys/types.h>	134	#include <sys/types.h>
111	#include <time.h>	135	#include <time.h>
112		136
113	#include <signal.h>	137	#include <signal.h>
114		138
		139	#ifdef EV_H
		140	# include EV_H
		141	#else
		142	# include "ev.h"
		143	#endif
		144
115	#ifndef _WIN32	145	#ifndef _WIN32
116	# include <unistd.h>
117	# include <sys/time.h>	146	# include <sys/time.h>
118	# include <sys/wait.h>	147	# include <sys/wait.h>
		148	# include <unistd.h>
119	#else	149	#else
120	# define WIN32_LEAN_AND_MEAN	150	# define WIN32_LEAN_AND_MEAN
121	# include <windows.h>	151	# include <windows.h>
122	# ifndef EV_SELECT_IS_WINSOCKET	152	# ifndef EV_SELECT_IS_WINSOCKET
123	# define EV_SELECT_IS_WINSOCKET 1	153	# define EV_SELECT_IS_WINSOCKET 1
…		…
132		162
133	#ifndef EV_USE_REALTIME	163	#ifndef EV_USE_REALTIME
134	# define EV_USE_REALTIME 0	164	# define EV_USE_REALTIME 0
135	#endif	165	#endif
136		166
		167	#ifndef EV_USE_NANOSLEEP
		168	# define EV_USE_NANOSLEEP 0
		169	#endif
		170
137	#ifndef EV_USE_SELECT	171	#ifndef EV_USE_SELECT
138	# define EV_USE_SELECT 1	172	# define EV_USE_SELECT 1
139	#endif	173	#endif
140		174
141	#ifndef EV_USE_POLL	175	#ifndef EV_USE_POLL
…		…
156		190
157	#ifndef EV_USE_PORT	191	#ifndef EV_USE_PORT
158	# define EV_USE_PORT 0	192	# define EV_USE_PORT 0
159	#endif	193	#endif
160		194
		195	#ifndef EV_USE_INOTIFY
		196	# define EV_USE_INOTIFY 0
		197	#endif
		198
		199	#ifndef EV_PID_HASHSIZE
		200	# if EV_MINIMAL
		201	# define EV_PID_HASHSIZE 1
		202	# else
		203	# define EV_PID_HASHSIZE 16
		204	# endif
		205	#endif
		206
		207	#ifndef EV_INOTIFY_HASHSIZE
		208	# if EV_MINIMAL
		209	# define EV_INOTIFY_HASHSIZE 1
		210	# else
		211	# define EV_INOTIFY_HASHSIZE 16
		212	# endif
		213	#endif
		214
161	/**/	215	/**/
162		216
163	#ifndef CLOCK_MONOTONIC	217	#ifndef CLOCK_MONOTONIC
164	# undef EV_USE_MONOTONIC	218	# undef EV_USE_MONOTONIC
165	# define EV_USE_MONOTONIC 0	219	# define EV_USE_MONOTONIC 0
…		…
168	#ifndef CLOCK_REALTIME	222	#ifndef CLOCK_REALTIME
169	# undef EV_USE_REALTIME	223	# undef EV_USE_REALTIME
170	# define EV_USE_REALTIME 0	224	# define EV_USE_REALTIME 0
171	#endif	225	#endif
172		226
		227	#if !EV_STAT_ENABLE
		228	# undef EV_USE_INOTIFY
		229	# define EV_USE_INOTIFY 0
		230	#endif
		231
		232	#if !EV_USE_NANOSLEEP
		233	# ifndef _WIN32
		234	# include <sys/select.h>
		235	# endif
		236	#endif
		237
		238	#if EV_USE_INOTIFY
		239	# include <sys/inotify.h>
		240	#endif
		241
173	#if EV_SELECT_IS_WINSOCKET	242	#if EV_SELECT_IS_WINSOCKET
174	# include <winsock.h>	243	# include <winsock.h>
175	#endif	244	#endif
176		245
177	/**/	246	/**/
178		247
		248	/*
		249	* This is used to avoid floating point rounding problems.
		250	* It is added to ev_rt_now when scheduling periodics
		251	* to ensure progress, time-wise, even when rounding
		252	* errors are against us.
		253	* This value is good at least till the year 4000.
		254	* Better solutions welcome.
		255	*/
		256	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
		257
179	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	258	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
180	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	259	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
181	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
182	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */	260	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
183		261
184	#ifdef EV_H
185	# include EV_H
186	#else
187	# include "ev.h"
188	#endif
189
190	#if __GNUC__ >= 3	262	#if __GNUC__ >= 4
191	# define expect(expr,value) __builtin_expect ((expr),(value))	263	# define expect(expr,value) __builtin_expect ((expr),(value))
192	# define inline static inline	264	# define noinline __attribute__ ((noinline))
193	#else	265	#else
194	# define expect(expr,value) (expr)	266	# define expect(expr,value) (expr)
195	# define inline static	267	# define noinline
		268	# if __STDC_VERSION__ < 199901L
		269	# define inline
		270	# endif
196	#endif	271	#endif
197		272
198	#define expect_false(expr) expect ((expr) != 0, 0)	273	#define expect_false(expr) expect ((expr) != 0, 0)
199	#define expect_true(expr) expect ((expr) != 0, 1)	274	#define expect_true(expr) expect ((expr) != 0, 1)
		275	#define inline_size static inline
		276
		277	#if EV_MINIMAL
		278	# define inline_speed static noinline
		279	#else
		280	# define inline_speed static inline
		281	#endif
200		282
201	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	283	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
202	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	284	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
203		285
204	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	286	#define EMPTY /* required for microsofts broken pseudo-c compiler */
205	#define EMPTY2(a,b) /* used to suppress some warnings */	287	#define EMPTY2(a,b) /* used to suppress some warnings */
206		288
207	typedef struct ev_watcher *W;	289	typedef ev_watcher *W;
208	typedef struct ev_watcher_list *WL;	290	typedef ev_watcher_list *WL;
209	typedef struct ev_watcher_time *WT;	291	typedef ev_watcher_time *WT;
210		292
		293	#if EV_USE_MONOTONIC
		294	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		295	/* giving it a reasonably high chance of working on typical architetcures */
211	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	296	static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		297	#endif
212		298
213	#ifdef _WIN32	299	#ifdef _WIN32
214	# include "ev_win32.c"	300	# include "ev_win32.c"
215	#endif	301	#endif
216		302
217	/*****************************************************************************/	303	/*****************************************************************************/
218		304
219	static void (*syserr_cb)(const char *msg);	305	static void (*syserr_cb)(const char *msg);
220		306
		307	void
221	void ev_set_syserr_cb (void (*cb)(const char *msg))	308	ev_set_syserr_cb (void (*cb)(const char *msg))
222	{	309	{
223	syserr_cb = cb;	310	syserr_cb = cb;
224	}	311	}
225		312
226	static void	313	static void noinline
227	syserr (const char *msg)	314	syserr (const char *msg)
228	{	315	{
229	if (!msg)	316	if (!msg)
230	msg = "(libev) system error";	317	msg = "(libev) system error";
231		318
…		…
238	}	325	}
239	}	326	}
240		327
241	static void *(*alloc)(void *ptr, long size);	328	static void *(*alloc)(void *ptr, long size);
242		329
		330	void
243	void ev_set_allocator (void *(*cb)(void *ptr, long size))	331	ev_set_allocator (void *(*cb)(void *ptr, long size))
244	{	332	{
245	alloc = cb;	333	alloc = cb;
246	}	334	}
247		335
248	static void *	336	inline_speed void *
249	ev_realloc (void *ptr, long size)	337	ev_realloc (void *ptr, long size)
250	{	338	{
251	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	339	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
252		340
253	if (!ptr && size)	341	if (!ptr && size)
…		…
277	typedef struct	365	typedef struct
278	{	366	{
279	W w;	367	W w;
280	int events;	368	int events;
281	} ANPENDING;	369	} ANPENDING;
		370
		371	#if EV_USE_INOTIFY
		372	typedef struct
		373	{
		374	WL head;
		375	} ANFS;
		376	#endif
282		377
283	#if EV_MULTIPLICITY	378	#if EV_MULTIPLICITY
284		379
285	struct ev_loop	380	struct ev_loop
286	{	381	{
…		…
320	gettimeofday (&tv, 0);	415	gettimeofday (&tv, 0);
321	return tv.tv_sec + tv.tv_usec * 1e-6;	416	return tv.tv_sec + tv.tv_usec * 1e-6;
322	#endif	417	#endif
323	}	418	}
324		419
325	inline ev_tstamp	420	ev_tstamp inline_size
326	get_clock (void)	421	get_clock (void)
327	{	422	{
328	#if EV_USE_MONOTONIC	423	#if EV_USE_MONOTONIC
329	if (expect_true (have_monotonic))	424	if (expect_true (have_monotonic))
330	{	425	{
…		…
343	{	438	{
344	return ev_rt_now;	439	return ev_rt_now;
345	}	440	}
346	#endif	441	#endif
347		442
348	#define array_roundsize(type,n) (((n) | 4) & ~3)	443	void
		444	ev_sleep (ev_tstamp delay)
		445	{
		446	if (delay > 0.)
		447	{
		448	#if EV_USE_NANOSLEEP
		449	struct timespec ts;
		450
		451	ts.tv_sec = (time_t)delay;
		452	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		453
		454	nanosleep (&ts, 0);
		455	#elif defined(_WIN32)
		456	Sleep (delay * 1e3);
		457	#else
		458	struct timeval tv;
		459
		460	tv.tv_sec = (time_t)delay;
		461	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		462
		463	select (0, 0, 0, 0, &tv);
		464	#endif
		465	}
		466	}
		467
		468	/*****************************************************************************/
		469
		470	int inline_size
		471	array_nextsize (int elem, int cur, int cnt)
		472	{
		473	int ncur = cur + 1;
		474
		475	do
		476	ncur <<= 1;
		477	while (cnt > ncur);
		478
		479	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		480	if (elem * ncur > 4096)
		481	{
		482	ncur *= elem;
		483	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		484	ncur = ncur - sizeof (void *) * 4;
		485	ncur /= elem;
		486	}
		487
		488	return ncur;
		489	}
		490
		491	static noinline void *
		492	array_realloc (int elem, void *base, int *cur, int cnt)
		493	{
		494	*cur = array_nextsize (elem, *cur, cnt);
		495	return ev_realloc (base, elem * *cur);
		496	}
349		497
350	#define array_needsize(type,base,cur,cnt,init) \	498	#define array_needsize(type,base,cur,cnt,init) \
351	if (expect_false ((cnt) > cur)) \	499	if (expect_false ((cnt) > (cur))) \
352	{ \	500	{ \
353	int newcnt = cur; \	501	int ocur_ = (cur); \
354	do \	502	(base) = (type *)array_realloc \
355	{ \	503	(sizeof (type), (base), &(cur), (cnt)); \
356	newcnt = array_roundsize (type, newcnt << 1); \	504	init ((base) + (ocur_), (cur) - ocur_); \
357	} \
358	while ((cnt) > newcnt); \
359	\
360	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
361	init (base + cur, newcnt - cur); \
362	cur = newcnt; \
363	}	505	}
364		506
		507	#if 0
365	#define array_slim(type,stem) \	508	#define array_slim(type,stem) \
366	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	509	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
367	{ \	510	{ \
368	stem ## max = array_roundsize (stem ## cnt >> 1); \	511	stem ## max = array_roundsize (stem ## cnt >> 1); \
369	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	512	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
370	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	513	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
371	}	514	}
		515	#endif
372		516
373	#define array_free(stem, idx) \	517	#define array_free(stem, idx) \
374	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	518	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
375		519
376	/*****************************************************************************/	520	/*****************************************************************************/
377		521
378	static void	522	void noinline
		523	ev_feed_event (EV_P_ void *w, int revents)
		524	{
		525	W w_ = (W)w;
		526	int pri = ABSPRI (w_);
		527
		528	if (expect_false (w_->pending))
		529	pendings [pri][w_->pending - 1].events |= revents;
		530	else
		531	{
		532	w_->pending = ++pendingcnt [pri];
		533	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		534	pendings [pri][w_->pending - 1].w = w_;
		535	pendings [pri][w_->pending - 1].events = revents;
		536	}
		537	}
		538
		539	void inline_speed
		540	queue_events (EV_P_ W *events, int eventcnt, int type)
		541	{
		542	int i;
		543
		544	for (i = 0; i < eventcnt; ++i)
		545	ev_feed_event (EV_A_ events [i], type);
		546	}
		547
		548	/*****************************************************************************/
		549
		550	void inline_size
379	anfds_init (ANFD *base, int count)	551	anfds_init (ANFD *base, int count)
380	{	552	{
381	while (count--)	553	while (count--)
382	{	554	{
383	base->head = 0;	555	base->head = 0;
…		…
386		558
387	++base;	559	++base;
388	}	560	}
389	}	561	}
390		562
391	void	563	void inline_speed
392	ev_feed_event (EV_P_ void *w, int revents)
393	{
394	W w_ = (W)w;
395
396	if (expect_false (w_->pending))
397	{
398	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
399	return;
400	}
401
402	if (expect_false (!w_->cb))
403	return;
404
405	w_->pending = ++pendingcnt [ABSPRI (w_)];
406	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
407	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
408	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
409	}
410
411	static void
412	queue_events (EV_P_ W *events, int eventcnt, int type)
413	{
414	int i;
415
416	for (i = 0; i < eventcnt; ++i)
417	ev_feed_event (EV_A_ events [i], type);
418	}
419
420	inline void
421	fd_event (EV_P_ int fd, int revents)	564	fd_event (EV_P_ int fd, int revents)
422	{	565	{
423	ANFD *anfd = anfds + fd;	566	ANFD *anfd = anfds + fd;
424	struct ev_io *w;	567	ev_io *w;
425		568
426	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	569	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
427	{	570	{
428	int ev = w->events & revents;	571	int ev = w->events & revents;
429		572
430	if (ev)	573	if (ev)
431	ev_feed_event (EV_A_ (W)w, ev);	574	ev_feed_event (EV_A_ (W)w, ev);
…		…
433	}	576	}
434		577
435	void	578	void
436	ev_feed_fd_event (EV_P_ int fd, int revents)	579	ev_feed_fd_event (EV_P_ int fd, int revents)
437	{	580	{
		581	if (fd >= 0 && fd < anfdmax)
438	fd_event (EV_A_ fd, revents);	582	fd_event (EV_A_ fd, revents);
439	}	583	}
440		584
441	/*****************************************************************************/	585	void inline_size
442
443	inline void
444	fd_reify (EV_P)	586	fd_reify (EV_P)
445	{	587	{
446	int i;	588	int i;
447		589
448	for (i = 0; i < fdchangecnt; ++i)	590	for (i = 0; i < fdchangecnt; ++i)
449	{	591	{
450	int fd = fdchanges [i];	592	int fd = fdchanges [i];
451	ANFD *anfd = anfds + fd;	593	ANFD *anfd = anfds + fd;
452	struct ev_io *w;	594	ev_io *w;
453		595
454	int events = 0;	596	unsigned char events = 0;
455		597
456	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	598	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
457	events |= w->events;	599	events |= (unsigned char)w->events;
458		600
459	#if EV_SELECT_IS_WINSOCKET	601	#if EV_SELECT_IS_WINSOCKET
460	if (events)	602	if (events)
461	{	603	{
462	unsigned long argp;	604	unsigned long argp;
463	anfd->handle = _get_osfhandle (fd);	605	anfd->handle = _get_osfhandle (fd);
464	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	606	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
465	}	607	}
466	#endif	608	#endif
467		609
		610	{
		611	unsigned char o_events = anfd->events;
		612	unsigned char o_reify = anfd->reify;
		613
468	anfd->reify = 0;	614	anfd->reify = 0;
469
470	backend_modify (EV_A_ fd, anfd->events, events);
471	anfd->events = events;	615	anfd->events = events;
		616
		617	if (o_events != events || o_reify & EV_IOFDSET)
		618	backend_modify (EV_A_ fd, o_events, events);
		619	}
472	}	620	}
473		621
474	fdchangecnt = 0;	622	fdchangecnt = 0;
475	}	623	}
476		624
477	static void	625	void inline_size
478	fd_change (EV_P_ int fd)	626	fd_change (EV_P_ int fd, int flags)
479	{	627	{
480	if (expect_false (anfds [fd].reify))	628	unsigned char reify = anfds [fd].reify;
481	return;
482
483	anfds [fd].reify = 1;	629	anfds [fd].reify |= flags;
484		630
		631	if (expect_true (!reify))
		632	{
485	++fdchangecnt;	633	++fdchangecnt;
486	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	634	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
487	fdchanges [fdchangecnt - 1] = fd;	635	fdchanges [fdchangecnt - 1] = fd;
		636	}
488	}	637	}
489		638
490	static void	639	void inline_speed
491	fd_kill (EV_P_ int fd)	640	fd_kill (EV_P_ int fd)
492	{	641	{
493	struct ev_io *w;	642	ev_io *w;
494		643
495	while ((w = (struct ev_io *)anfds [fd].head))	644	while ((w = (ev_io *)anfds [fd].head))
496	{	645	{
497	ev_io_stop (EV_A_ w);	646	ev_io_stop (EV_A_ w);
498	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	647	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
499	}	648	}
500	}	649	}
501		650
502	inline int	651	int inline_size
503	fd_valid (int fd)	652	fd_valid (int fd)
504	{	653	{
505	#ifdef _WIN32	654	#ifdef _WIN32
506	return _get_osfhandle (fd) != -1;	655	return _get_osfhandle (fd) != -1;
507	#else	656	#else
508	return fcntl (fd, F_GETFD) != -1;	657	return fcntl (fd, F_GETFD) != -1;
509	#endif	658	#endif
510	}	659	}
511		660
512	/* called on EBADF to verify fds */	661	/* called on EBADF to verify fds */
513	static void	662	static void noinline
514	fd_ebadf (EV_P)	663	fd_ebadf (EV_P)
515	{	664	{
516	int fd;	665	int fd;
517		666
518	for (fd = 0; fd < anfdmax; ++fd)	667	for (fd = 0; fd < anfdmax; ++fd)
…		…
520	if (!fd_valid (fd) == -1 && errno == EBADF)	669	if (!fd_valid (fd) == -1 && errno == EBADF)
521	fd_kill (EV_A_ fd);	670	fd_kill (EV_A_ fd);
522	}	671	}
523		672
524	/* called on ENOMEM in select/poll to kill some fds and retry */	673	/* called on ENOMEM in select/poll to kill some fds and retry */
525	static void	674	static void noinline
526	fd_enomem (EV_P)	675	fd_enomem (EV_P)
527	{	676	{
528	int fd;	677	int fd;
529		678
530	for (fd = anfdmax; fd--; )	679	for (fd = anfdmax; fd--; )
…		…
534	return;	683	return;
535	}	684	}
536	}	685	}
537		686
538	/* usually called after fork if backend needs to re-arm all fds from scratch */	687	/* usually called after fork if backend needs to re-arm all fds from scratch */
539	static void	688	static void noinline
540	fd_rearm_all (EV_P)	689	fd_rearm_all (EV_P)
541	{	690	{
542	int fd;	691	int fd;
543		692
544	/* this should be highly optimised to not do anything but set a flag */
545	for (fd = 0; fd < anfdmax; ++fd)	693	for (fd = 0; fd < anfdmax; ++fd)
546	if (anfds [fd].events)	694	if (anfds [fd].events)
547	{	695	{
548	anfds [fd].events = 0;	696	anfds [fd].events = 0;
549	fd_change (EV_A_ fd);	697	fd_change (EV_A_ fd, EV_IOFDSET | 1);
550	}	698	}
551	}	699	}
552		700
553	/*****************************************************************************/	701	/*****************************************************************************/
554		702
555	static void	703	void inline_speed
556	upheap (WT *heap, int k)	704	upheap (WT *heap, int k)
557	{	705	{
558	WT w = heap [k];	706	WT w = heap [k];
559		707
560	while (k && heap [k >> 1]->at > w->at)	708	while (k)
561	{	709	{
		710	int p = (k - 1) >> 1;
		711
		712	if (heap [p]->at <= w->at)
		713	break;
		714
562	heap [k] = heap [k >> 1];	715	heap [k] = heap [p];
563	((W)heap [k])->active = k + 1;	716	((W)heap [k])->active = k + 1;
564	k >>= 1;	717	k = p;
565	}	718	}
566		719
567	heap [k] = w;	720	heap [k] = w;
568	((W)heap [k])->active = k + 1;	721	((W)heap [k])->active = k + 1;
569
570	}	722	}
571		723
572	static void	724	void inline_speed
573	downheap (WT *heap, int N, int k)	725	downheap (WT *heap, int N, int k)
574	{	726	{
575	WT w = heap [k];	727	WT w = heap [k];
576		728
577	while (k < (N >> 1))	729	for (;;)
578	{	730	{
579	int j = k << 1;	731	int c = (k << 1) + 1;
580		732
581	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	733	if (c >= N)
582	++j;
583
584	if (w->at <= heap [j]->at)
585	break;	734	break;
586		735
		736	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		737	? 1 : 0;
		738
		739	if (w->at <= heap [c]->at)
		740	break;
		741
587	heap [k] = heap [j];	742	heap [k] = heap [c];
588	((W)heap [k])->active = k + 1;	743	((W)heap [k])->active = k + 1;
		744
589	k = j;	745	k = c;
590	}	746	}
591		747
592	heap [k] = w;	748	heap [k] = w;
593	((W)heap [k])->active = k + 1;	749	((W)heap [k])->active = k + 1;
594	}	750	}
595		751
596	inline void	752	void inline_size
597	adjustheap (WT *heap, int N, int k)	753	adjustheap (WT *heap, int N, int k)
598	{	754	{
599	upheap (heap, k);	755	upheap (heap, k);
600	downheap (heap, N, k);	756	downheap (heap, N, k);
601	}	757	}
…		…
611	static ANSIG *signals;	767	static ANSIG *signals;
612	static int signalmax;	768	static int signalmax;
613		769
614	static int sigpipe [2];	770	static int sigpipe [2];
615	static sig_atomic_t volatile gotsig;	771	static sig_atomic_t volatile gotsig;
616	static struct ev_io sigev;	772	static ev_io sigev;
617		773
618	static void	774	void inline_size
619	signals_init (ANSIG *base, int count)	775	signals_init (ANSIG *base, int count)
620	{	776	{
621	while (count--)	777	while (count--)
622	{	778	{
623	base->head = 0;	779	base->head = 0;
…		…
643	write (sigpipe [1], &signum, 1);	799	write (sigpipe [1], &signum, 1);
644	errno = old_errno;	800	errno = old_errno;
645	}	801	}
646	}	802	}
647		803
648	void	804	void noinline
649	ev_feed_signal_event (EV_P_ int signum)	805	ev_feed_signal_event (EV_P_ int signum)
650	{	806	{
651	WL w;	807	WL w;
652		808
653	#if EV_MULTIPLICITY	809	#if EV_MULTIPLICITY
…		…
664	for (w = signals [signum].head; w; w = w->next)	820	for (w = signals [signum].head; w; w = w->next)
665	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	821	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
666	}	822	}
667		823
668	static void	824	static void
669	sigcb (EV_P_ struct ev_io *iow, int revents)	825	sigcb (EV_P_ ev_io *iow, int revents)
670	{	826	{
671	int signum;	827	int signum;
672		828
673	read (sigpipe [0], &revents, 1);	829	read (sigpipe [0], &revents, 1);
674	gotsig = 0;	830	gotsig = 0;
…		…
676	for (signum = signalmax; signum--; )	832	for (signum = signalmax; signum--; )
677	if (signals [signum].gotsig)	833	if (signals [signum].gotsig)
678	ev_feed_signal_event (EV_A_ signum + 1);	834	ev_feed_signal_event (EV_A_ signum + 1);
679	}	835	}
680		836
681	static void	837	void inline_speed
682	fd_intern (int fd)	838	fd_intern (int fd)
683	{	839	{
684	#ifdef _WIN32	840	#ifdef _WIN32
685	int arg = 1;	841	int arg = 1;
686	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	842	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
688	fcntl (fd, F_SETFD, FD_CLOEXEC);	844	fcntl (fd, F_SETFD, FD_CLOEXEC);
689	fcntl (fd, F_SETFL, O_NONBLOCK);	845	fcntl (fd, F_SETFL, O_NONBLOCK);
690	#endif	846	#endif
691	}	847	}
692		848
693	static void	849	static void noinline
694	siginit (EV_P)	850	siginit (EV_P)
695	{	851	{
696	fd_intern (sigpipe [0]);	852	fd_intern (sigpipe [0]);
697	fd_intern (sigpipe [1]);	853	fd_intern (sigpipe [1]);
698		854
…		…
701	ev_unref (EV_A); /* child watcher should not keep loop alive */	857	ev_unref (EV_A); /* child watcher should not keep loop alive */
702	}	858	}
703		859
704	/*****************************************************************************/	860	/*****************************************************************************/
705		861
706	static struct ev_child *childs [PID_HASHSIZE];	862	static WL childs [EV_PID_HASHSIZE];
707		863
708	#ifndef _WIN32	864	#ifndef _WIN32
709		865
710	static struct ev_signal childev;	866	static ev_signal childev;
		867
		868	void inline_speed
		869	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		870	{
		871	ev_child *w;
		872
		873	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		874	if (w->pid == pid || !w->pid)
		875	{
		876	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		877	w->rpid = pid;
		878	w->rstatus = status;
		879	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		880	}
		881	}
711		882
712	#ifndef WCONTINUED	883	#ifndef WCONTINUED
713	# define WCONTINUED 0	884	# define WCONTINUED 0
714	#endif	885	#endif
715		886
716	static void	887	static void
717	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
718	{
719	struct ev_child *w;
720
721	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
722	if (w->pid == pid || !w->pid)
723	{
724	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
725	w->rpid = pid;
726	w->rstatus = status;
727	ev_feed_event (EV_A_ (W)w, EV_CHILD);
728	}
729	}
730
731	static void
732	childcb (EV_P_ struct ev_signal *sw, int revents)	888	childcb (EV_P_ ev_signal *sw, int revents)
733	{	889	{
734	int pid, status;	890	int pid, status;
735		891
		892	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
736	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	893	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
737	{	894	if (!WCONTINUED
		895	|| errno != EINVAL
		896	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		897	return;
		898
738	/* make sure we are called again until all childs have been reaped */	899	/* make sure we are called again until all childs have been reaped */
739	/* we need to do it this way so that the callback gets called before we continue */	900	/* we need to do it this way so that the callback gets called before we continue */
740	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	901	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
741		902
742	child_reap (EV_A_ sw, pid, pid, status);	903	child_reap (EV_A_ sw, pid, pid, status);
		904	if (EV_PID_HASHSIZE > 1)
743	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	905	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
744	}
745	}	906	}
746		907
747	#endif	908	#endif
748		909
749	/*****************************************************************************/	910	/*****************************************************************************/
…		…
775	{	936	{
776	return EV_VERSION_MINOR;	937	return EV_VERSION_MINOR;
777	}	938	}
778		939
779	/* return true if we are running with elevated privileges and should ignore env variables */	940	/* return true if we are running with elevated privileges and should ignore env variables */
780	static int	941	int inline_size
781	enable_secure (void)	942	enable_secure (void)
782	{	943	{
783	#ifdef _WIN32	944	#ifdef _WIN32
784	return 0;	945	return 0;
785	#else	946	#else
…		…
821	}	982	}
822		983
823	unsigned int	984	unsigned int
824	ev_embeddable_backends (void)	985	ev_embeddable_backends (void)
825	{	986	{
826	return EVBACKEND_EPOLL	987	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
827	| EVBACKEND_KQUEUE	988
828	| EVBACKEND_PORT;	989	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		990	/* please fix it and tell me how to detect the fix */
		991	flags &= ~EVBACKEND_EPOLL;
		992
		993	return flags;
829	}	994	}
830		995
831	unsigned int	996	unsigned int
832	ev_backend (EV_P)	997	ev_backend (EV_P)
833	{	998	{
834	return backend;	999	return backend;
835	}	1000	}
836		1001
837	static void	1002	unsigned int
		1003	ev_loop_count (EV_P)
		1004	{
		1005	return loop_count;
		1006	}
		1007
		1008	void
		1009	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1010	{
		1011	io_blocktime = interval;
		1012	}
		1013
		1014	void
		1015	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1016	{
		1017	timeout_blocktime = interval;
		1018	}
		1019
		1020	static void noinline
838	loop_init (EV_P_ unsigned int flags)	1021	loop_init (EV_P_ unsigned int flags)
839	{	1022	{
840	if (!backend)	1023	if (!backend)
841	{	1024	{
842	#if EV_USE_MONOTONIC	1025	#if EV_USE_MONOTONIC
…		…
850	ev_rt_now = ev_time ();	1033	ev_rt_now = ev_time ();
851	mn_now = get_clock ();	1034	mn_now = get_clock ();
852	now_floor = mn_now;	1035	now_floor = mn_now;
853	rtmn_diff = ev_rt_now - mn_now;	1036	rtmn_diff = ev_rt_now - mn_now;
854		1037
		1038	io_blocktime = 0.;
		1039	timeout_blocktime = 0.;
		1040
		1041	/* pid check not overridable via env */
		1042	#ifndef _WIN32
		1043	if (flags & EVFLAG_FORKCHECK)
		1044	curpid = getpid ();
		1045	#endif
		1046
855	if (!(flags & EVFLAG_NOENV)	1047	if (!(flags & EVFLAG_NOENV)
856	&& !enable_secure ()	1048	&& !enable_secure ()
857	&& getenv ("LIBEV_FLAGS"))	1049	&& getenv ("LIBEV_FLAGS"))
858	flags = atoi (getenv ("LIBEV_FLAGS"));	1050	flags = atoi (getenv ("LIBEV_FLAGS"));
859		1051
860	if (!(flags & 0x0000ffffUL))	1052	if (!(flags & 0x0000ffffUL))
861	flags |= ev_recommended_backends ();	1053	flags |= ev_recommended_backends ();
862		1054
863	backend = 0;	1055	backend = 0;
		1056	backend_fd = -1;
		1057	#if EV_USE_INOTIFY
		1058	fs_fd = -2;
		1059	#endif
		1060
864	#if EV_USE_PORT	1061	#if EV_USE_PORT
865	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1062	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
866	#endif	1063	#endif
867	#if EV_USE_KQUEUE	1064	#if EV_USE_KQUEUE
868	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1065	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
880	ev_init (&sigev, sigcb);	1077	ev_init (&sigev, sigcb);
881	ev_set_priority (&sigev, EV_MAXPRI);	1078	ev_set_priority (&sigev, EV_MAXPRI);
882	}	1079	}
883	}	1080	}
884		1081
885	static void	1082	static void noinline
886	loop_destroy (EV_P)	1083	loop_destroy (EV_P)
887	{	1084	{
888	int i;	1085	int i;
		1086
		1087	#if EV_USE_INOTIFY
		1088	if (fs_fd >= 0)
		1089	close (fs_fd);
		1090	#endif
		1091
		1092	if (backend_fd >= 0)
		1093	close (backend_fd);
889		1094
890	#if EV_USE_PORT	1095	#if EV_USE_PORT
891	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1096	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
892	#endif	1097	#endif
893	#if EV_USE_KQUEUE	1098	#if EV_USE_KQUEUE
…		…
902	#if EV_USE_SELECT	1107	#if EV_USE_SELECT
903	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1108	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
904	#endif	1109	#endif
905		1110
906	for (i = NUMPRI; i--; )	1111	for (i = NUMPRI; i--; )
		1112	{
907	array_free (pending, [i]);	1113	array_free (pending, [i]);
		1114	#if EV_IDLE_ENABLE
		1115	array_free (idle, [i]);
		1116	#endif
		1117	}
		1118
		1119	ev_free (anfds); anfdmax = 0;
908		1120
909	/* have to use the microsoft-never-gets-it-right macro */	1121	/* have to use the microsoft-never-gets-it-right macro */
910	array_free (fdchange, EMPTY0);	1122	array_free (fdchange, EMPTY);
911	array_free (timer, EMPTY0);	1123	array_free (timer, EMPTY);
912	#if EV_PERIODICS	1124	#if EV_PERIODIC_ENABLE
913	array_free (periodic, EMPTY0);	1125	array_free (periodic, EMPTY);
914	#endif	1126	#endif
		1127	#if EV_FORK_ENABLE
915	array_free (idle, EMPTY0);	1128	array_free (fork, EMPTY);
		1129	#endif
916	array_free (prepare, EMPTY0);	1130	array_free (prepare, EMPTY);
917	array_free (check, EMPTY0);	1131	array_free (check, EMPTY);
918		1132
919	backend = 0;	1133	backend = 0;
920	}	1134	}
921		1135
922	static void	1136	void inline_size infy_fork (EV_P);
		1137
		1138	void inline_size
923	loop_fork (EV_P)	1139	loop_fork (EV_P)
924	{	1140	{
925	#if EV_USE_PORT	1141	#if EV_USE_PORT
926	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1142	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
927	#endif	1143	#endif
928	#if EV_USE_KQUEUE	1144	#if EV_USE_KQUEUE
929	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1145	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
930	#endif	1146	#endif
931	#if EV_USE_EPOLL	1147	#if EV_USE_EPOLL
932	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1148	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1149	#endif
		1150	#if EV_USE_INOTIFY
		1151	infy_fork (EV_A);
933	#endif	1152	#endif
934		1153
935	if (ev_is_active (&sigev))	1154	if (ev_is_active (&sigev))
936	{	1155	{
937	/* default loop */	1156	/* default loop */
…		…
1053	postfork = 1;	1272	postfork = 1;
1054	}	1273	}
1055		1274
1056	/*****************************************************************************/	1275	/*****************************************************************************/
1057		1276
1058	static int	1277	void
1059	any_pending (EV_P)	1278	ev_invoke (EV_P_ void *w, int revents)
1060	{	1279	{
1061	int pri;	1280	EV_CB_INVOKE ((W)w, revents);
1062
1063	for (pri = NUMPRI; pri--; )
1064	if (pendingcnt [pri])
1065	return 1;
1066
1067	return 0;
1068	}	1281	}
1069		1282
1070	inline void	1283	void inline_speed
1071	call_pending (EV_P)	1284	call_pending (EV_P)
1072	{	1285	{
1073	int pri;	1286	int pri;
1074		1287
1075	for (pri = NUMPRI; pri--; )	1288	for (pri = NUMPRI; pri--; )
…		…
1077	{	1290	{
1078	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1291	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1079		1292
1080	if (expect_true (p->w))	1293	if (expect_true (p->w))
1081	{	1294	{
		1295	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1296
1082	p->w->pending = 0;	1297	p->w->pending = 0;
1083	EV_CB_INVOKE (p->w, p->events);	1298	EV_CB_INVOKE (p->w, p->events);
1084	}	1299	}
1085	}	1300	}
1086	}	1301	}
1087		1302
1088	inline void	1303	void inline_size
1089	timers_reify (EV_P)	1304	timers_reify (EV_P)
1090	{	1305	{
1091	while (timercnt && ((WT)timers [0])->at <= mn_now)	1306	while (timercnt && ((WT)timers [0])->at <= mn_now)
1092	{	1307	{
1093	struct ev_timer *w = timers [0];	1308	ev_timer *w = (ev_timer *)timers [0];
1094		1309
1095	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1310	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1096		1311
1097	/* first reschedule or stop timer */	1312	/* first reschedule or stop timer */
1098	if (w->repeat)	1313	if (w->repeat)
1099	{	1314	{
1100	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1315	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1101		1316
1102	((WT)w)->at += w->repeat;	1317	((WT)w)->at += w->repeat;
1103	if (((WT)w)->at < mn_now)	1318	if (((WT)w)->at < mn_now)
1104	((WT)w)->at = mn_now;	1319	((WT)w)->at = mn_now;
1105		1320
1106	downheap ((WT *)timers, timercnt, 0);	1321	downheap (timers, timercnt, 0);
1107	}	1322	}
1108	else	1323	else
1109	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1324	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1110		1325
1111	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1326	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1112	}	1327	}
1113	}	1328	}
1114		1329
1115	#if EV_PERIODICS	1330	#if EV_PERIODIC_ENABLE
1116	inline void	1331	void inline_size
1117	periodics_reify (EV_P)	1332	periodics_reify (EV_P)
1118	{	1333	{
1119	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1334	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1120	{	1335	{
1121	struct ev_periodic *w = periodics [0];	1336	ev_periodic *w = (ev_periodic *)periodics [0];
1122		1337
1123	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1338	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1124		1339
1125	/* first reschedule or stop timer */	1340	/* first reschedule or stop timer */
1126	if (w->reschedule_cb)	1341	if (w->reschedule_cb)
1127	{	1342	{
1128	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1343	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1129	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1344	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1130	downheap ((WT *)periodics, periodiccnt, 0);	1345	downheap (periodics, periodiccnt, 0);
1131	}	1346	}
1132	else if (w->interval)	1347	else if (w->interval)
1133	{	1348	{
1134	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1349	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1350	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1135	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1351	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1136	downheap ((WT *)periodics, periodiccnt, 0);	1352	downheap (periodics, periodiccnt, 0);
1137	}	1353	}
1138	else	1354	else
1139	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1355	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1140		1356
1141	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1357	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1142	}	1358	}
1143	}	1359	}
1144		1360
1145	static void	1361	static void noinline
1146	periodics_reschedule (EV_P)	1362	periodics_reschedule (EV_P)
1147	{	1363	{
1148	int i;	1364	int i;
1149		1365
1150	/* adjust periodics after time jump */	1366	/* adjust periodics after time jump */
1151	for (i = 0; i < periodiccnt; ++i)	1367	for (i = 0; i < periodiccnt; ++i)
1152	{	1368	{
1153	struct ev_periodic *w = periodics [i];	1369	ev_periodic *w = (ev_periodic *)periodics [i];
1154		1370
1155	if (w->reschedule_cb)	1371	if (w->reschedule_cb)
1156	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1372	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1157	else if (w->interval)	1373	else if (w->interval)
1158	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1374	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1159	}	1375	}
1160		1376
1161	/* now rebuild the heap */	1377	/* now rebuild the heap */
1162	for (i = periodiccnt >> 1; i--; )	1378	for (i = periodiccnt >> 1; i--; )
1163	downheap ((WT *)periodics, periodiccnt, i);	1379	downheap (periodics, periodiccnt, i);
1164	}	1380	}
1165	#endif	1381	#endif
1166		1382
1167	inline int	1383	#if EV_IDLE_ENABLE
1168	time_update_monotonic (EV_P)	1384	void inline_size
		1385	idle_reify (EV_P)
1169	{	1386	{
		1387	if (expect_false (idleall))
		1388	{
		1389	int pri;
		1390
		1391	for (pri = NUMPRI; pri--; )
		1392	{
		1393	if (pendingcnt [pri])
		1394	break;
		1395
		1396	if (idlecnt [pri])
		1397	{
		1398	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1399	break;
		1400	}
		1401	}
		1402	}
		1403	}
		1404	#endif
		1405
		1406	void inline_speed
		1407	time_update (EV_P_ ev_tstamp max_block)
		1408	{
		1409	int i;
		1410
		1411	#if EV_USE_MONOTONIC
		1412	if (expect_true (have_monotonic))
		1413	{
		1414	ev_tstamp odiff = rtmn_diff;
		1415
1170	mn_now = get_clock ();	1416	mn_now = get_clock ();
1171		1417
		1418	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1419	/* interpolate in the meantime */
1172	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1420	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1173	{	1421	{
1174	ev_rt_now = rtmn_diff + mn_now;	1422	ev_rt_now = rtmn_diff + mn_now;
1175	return 0;	1423	return;
1176	}	1424	}
1177	else	1425
1178	{
1179	now_floor = mn_now;	1426	now_floor = mn_now;
1180	ev_rt_now = ev_time ();	1427	ev_rt_now = ev_time ();
1181	return 1;
1182	}
1183	}
1184		1428
1185	inline void	1429	/* loop a few times, before making important decisions.
1186	time_update (EV_P)	1430	* on the choice of "4": one iteration isn't enough,
1187	{	1431	* in case we get preempted during the calls to
1188	int i;	1432	* ev_time and get_clock. a second call is almost guaranteed
1189		1433	* to succeed in that case, though. and looping a few more times
1190	#if EV_USE_MONOTONIC	1434	* doesn't hurt either as we only do this on time-jumps or
1191	if (expect_true (have_monotonic))	1435	* in the unlikely event of having been preempted here.
1192	{	1436	*/
1193	if (time_update_monotonic (EV_A))	1437	for (i = 4; --i; )
1194	{	1438	{
1195	ev_tstamp odiff = rtmn_diff;
1196
1197	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1198	{
1199	rtmn_diff = ev_rt_now - mn_now;	1439	rtmn_diff = ev_rt_now - mn_now;
1200		1440
1201	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1441	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1202	return; /* all is well */	1442	return; /* all is well */
1203		1443
1204	ev_rt_now = ev_time ();	1444	ev_rt_now = ev_time ();
1205	mn_now = get_clock ();	1445	mn_now = get_clock ();
1206	now_floor = mn_now;	1446	now_floor = mn_now;
1207	}	1447	}
1208		1448
1209	# if EV_PERIODICS	1449	# if EV_PERIODIC_ENABLE
		1450	periodics_reschedule (EV_A);
		1451	# endif
		1452	/* no timer adjustment, as the monotonic clock doesn't jump */
		1453	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1454	}
		1455	else
		1456	#endif
		1457	{
		1458	ev_rt_now = ev_time ();
		1459
		1460	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1461	{
		1462	#if EV_PERIODIC_ENABLE
1210	periodics_reschedule (EV_A);	1463	periodics_reschedule (EV_A);
1211	# endif	1464	#endif
1212	/* no timer adjustment, as the monotonic clock doesn't jump */
1213	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1214	}
1215	}
1216	else
1217	#endif
1218	{
1219	ev_rt_now = ev_time ();
1220
1221	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1222	{
1223	#if EV_PERIODICS
1224	periodics_reschedule (EV_A);
1225	#endif
1226
1227	/* adjust timers. this is easy, as the offset is the same for all */	1465	/* adjust timers. this is easy, as the offset is the same for all of them */
1228	for (i = 0; i < timercnt; ++i)	1466	for (i = 0; i < timercnt; ++i)
1229	((WT)timers [i])->at += ev_rt_now - mn_now;	1467	((WT)timers [i])->at += ev_rt_now - mn_now;
1230	}	1468	}
1231		1469
1232	mn_now = ev_rt_now;	1470	mn_now = ev_rt_now;
…		…
1252	{	1490	{
1253	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1491	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1254	? EVUNLOOP_ONE	1492	? EVUNLOOP_ONE
1255	: EVUNLOOP_CANCEL;	1493	: EVUNLOOP_CANCEL;
1256		1494
1257	while (activecnt)	1495	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1496
		1497	do
1258	{	1498	{
		1499	#ifndef _WIN32
		1500	if (expect_false (curpid)) /* penalise the forking check even more */
		1501	if (expect_false (getpid () != curpid))
		1502	{
		1503	curpid = getpid ();
		1504	postfork = 1;
		1505	}
		1506	#endif
		1507
		1508	#if EV_FORK_ENABLE
		1509	/* we might have forked, so queue fork handlers */
		1510	if (expect_false (postfork))
		1511	if (forkcnt)
		1512	{
		1513	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1514	call_pending (EV_A);
		1515	}
		1516	#endif
		1517
1259	/* queue check watchers (and execute them) */	1518	/* queue prepare watchers (and execute them) */
1260	if (expect_false (preparecnt))	1519	if (expect_false (preparecnt))
1261	{	1520	{
1262	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1521	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1263	call_pending (EV_A);	1522	call_pending (EV_A);
1264	}	1523	}
1265		1524
		1525	if (expect_false (!activecnt))
		1526	break;
		1527
1266	/* we might have forked, so reify kernel state if necessary */	1528	/* we might have forked, so reify kernel state if necessary */
1267	if (expect_false (postfork))	1529	if (expect_false (postfork))
1268	loop_fork (EV_A);	1530	loop_fork (EV_A);
1269		1531
1270	/* update fd-related kernel structures */	1532	/* update fd-related kernel structures */
1271	fd_reify (EV_A);	1533	fd_reify (EV_A);
1272		1534
1273	/* calculate blocking time */	1535	/* calculate blocking time */
1274	{	1536	{
1275	double block;	1537	ev_tstamp waittime = 0.;
		1538	ev_tstamp sleeptime = 0.;
1276		1539
1277	if (flags & EVLOOP_NONBLOCK || idlecnt)	1540	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1278	block = 0.; /* do not block at all */
1279	else
1280	{	1541	{
1281	/* update time to cancel out callback processing overhead */	1542	/* update time to cancel out callback processing overhead */
1282	#if EV_USE_MONOTONIC
1283	if (expect_true (have_monotonic))
1284	time_update_monotonic (EV_A);	1543	time_update (EV_A_ 1e100);
1285	else
1286	#endif
1287	{
1288	ev_rt_now = ev_time ();
1289	mn_now = ev_rt_now;
1290	}
1291		1544
1292	block = MAX_BLOCKTIME;	1545	waittime = MAX_BLOCKTIME;
1293		1546
1294	if (timercnt)	1547	if (timercnt)
1295	{	1548	{
1296	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1549	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1297	if (block > to) block = to;	1550	if (waittime > to) waittime = to;
1298	}	1551	}
1299		1552
1300	#if EV_PERIODICS	1553	#if EV_PERIODIC_ENABLE
1301	if (periodiccnt)	1554	if (periodiccnt)
1302	{	1555	{
1303	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1556	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1304	if (block > to) block = to;	1557	if (waittime > to) waittime = to;
1305	}	1558	}
1306	#endif	1559	#endif
1307		1560
1308	if (expect_false (block < 0.)) block = 0.;	1561	if (expect_false (waittime < timeout_blocktime))
		1562	waittime = timeout_blocktime;
		1563
		1564	sleeptime = waittime - backend_fudge;
		1565
		1566	if (expect_true (sleeptime > io_blocktime))
		1567	sleeptime = io_blocktime;
		1568
		1569	if (sleeptime)
		1570	{
		1571	ev_sleep (sleeptime);
		1572	waittime -= sleeptime;
		1573	}
1309	}	1574	}
1310		1575
		1576	++loop_count;
1311	backend_poll (EV_A_ block);	1577	backend_poll (EV_A_ waittime);
		1578
		1579	/* update ev_rt_now, do magic */
		1580	time_update (EV_A_ waittime + sleeptime);
1312	}	1581	}
1313
1314	/* update ev_rt_now, do magic */
1315	time_update (EV_A);
1316		1582
1317	/* queue pending timers and reschedule them */	1583	/* queue pending timers and reschedule them */
1318	timers_reify (EV_A); /* relative timers called last */	1584	timers_reify (EV_A); /* relative timers called last */
1319	#if EV_PERIODICS	1585	#if EV_PERIODIC_ENABLE
1320	periodics_reify (EV_A); /* absolute timers called first */	1586	periodics_reify (EV_A); /* absolute timers called first */
1321	#endif	1587	#endif
1322		1588
		1589	#if EV_IDLE_ENABLE
1323	/* queue idle watchers unless io or timers are pending */	1590	/* queue idle watchers unless other events are pending */
1324	if (idlecnt && !any_pending (EV_A))	1591	idle_reify (EV_A);
1325	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1592	#endif
1326		1593
1327	/* queue check watchers, to be executed first */	1594	/* queue check watchers, to be executed first */
1328	if (expect_false (checkcnt))	1595	if (expect_false (checkcnt))
1329	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1596	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1330		1597
1331	call_pending (EV_A);	1598	call_pending (EV_A);
1332		1599
1333	if (expect_false (loop_done))
1334	break;
1335	}	1600	}
		1601	while (expect_true (activecnt && !loop_done));
1336		1602
1337	if (loop_done == EVUNLOOP_ONE)	1603	if (loop_done == EVUNLOOP_ONE)
1338	loop_done = EVUNLOOP_CANCEL;	1604	loop_done = EVUNLOOP_CANCEL;
1339	}	1605	}
1340		1606
…		…
1344	loop_done = how;	1610	loop_done = how;
1345	}	1611	}
1346		1612
1347	/*****************************************************************************/	1613	/*****************************************************************************/
1348		1614
1349	inline void	1615	void inline_size
1350	wlist_add (WL *head, WL elem)	1616	wlist_add (WL *head, WL elem)
1351	{	1617	{
1352	elem->next = *head;	1618	elem->next = *head;
1353	*head = elem;	1619	*head = elem;
1354	}	1620	}
1355		1621
1356	inline void	1622	void inline_size
1357	wlist_del (WL *head, WL elem)	1623	wlist_del (WL *head, WL elem)
1358	{	1624	{
1359	while (*head)	1625	while (*head)
1360	{	1626	{
1361	if (*head == elem)	1627	if (*head == elem)
…		…
1366		1632
1367	head = &(*head)->next;	1633	head = &(*head)->next;
1368	}	1634	}
1369	}	1635	}
1370		1636
1371	inline void	1637	void inline_speed
1372	ev_clear_pending (EV_P_ W w)	1638	clear_pending (EV_P_ W w)
1373	{	1639	{
1374	if (w->pending)	1640	if (w->pending)
1375	{	1641	{
1376	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1642	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1377	w->pending = 0;	1643	w->pending = 0;
1378	}	1644	}
1379	}	1645	}
1380		1646
1381	inline void	1647	int
		1648	ev_clear_pending (EV_P_ void *w)
		1649	{
		1650	W w_ = (W)w;
		1651	int pending = w_->pending;
		1652
		1653	if (expect_true (pending))
		1654	{
		1655	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1656	w_->pending = 0;
		1657	p->w = 0;
		1658	return p->events;
		1659	}
		1660	else
		1661	return 0;
		1662	}
		1663
		1664	void inline_size
		1665	pri_adjust (EV_P_ W w)
		1666	{
		1667	int pri = w->priority;
		1668	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1669	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1670	w->priority = pri;
		1671	}
		1672
		1673	void inline_speed
1382	ev_start (EV_P_ W w, int active)	1674	ev_start (EV_P_ W w, int active)
1383	{	1675	{
1384	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1676	pri_adjust (EV_A_ w);
1385	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1386
1387	w->active = active;	1677	w->active = active;
1388	ev_ref (EV_A);	1678	ev_ref (EV_A);
1389	}	1679	}
1390		1680
1391	inline void	1681	void inline_size
1392	ev_stop (EV_P_ W w)	1682	ev_stop (EV_P_ W w)
1393	{	1683	{
1394	ev_unref (EV_A);	1684	ev_unref (EV_A);
1395	w->active = 0;	1685	w->active = 0;
1396	}	1686	}
1397		1687
1398	/*****************************************************************************/	1688	/*****************************************************************************/
1399		1689
1400	void	1690	void noinline
1401	ev_io_start (EV_P_ struct ev_io *w)	1691	ev_io_start (EV_P_ ev_io *w)
1402	{	1692	{
1403	int fd = w->fd;	1693	int fd = w->fd;
1404		1694
1405	if (expect_false (ev_is_active (w)))	1695	if (expect_false (ev_is_active (w)))
1406	return;	1696	return;
1407		1697
1408	assert (("ev_io_start called with negative fd", fd >= 0));	1698	assert (("ev_io_start called with negative fd", fd >= 0));
1409		1699
1410	ev_start (EV_A_ (W)w, 1);	1700	ev_start (EV_A_ (W)w, 1);
1411	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1701	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1412	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1702	wlist_add (&anfds[fd].head, (WL)w);
1413		1703
1414	fd_change (EV_A_ fd);	1704	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1705	w->events &= ~EV_IOFDSET;
1415	}	1706	}
1416		1707
1417	void	1708	void noinline
1418	ev_io_stop (EV_P_ struct ev_io *w)	1709	ev_io_stop (EV_P_ ev_io *w)
1419	{	1710	{
1420	ev_clear_pending (EV_A_ (W)w);	1711	clear_pending (EV_A_ (W)w);
1421	if (expect_false (!ev_is_active (w)))	1712	if (expect_false (!ev_is_active (w)))
1422	return;	1713	return;
1423		1714
1424	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1715	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1425		1716
1426	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1717	wlist_del (&anfds[w->fd].head, (WL)w);
1427	ev_stop (EV_A_ (W)w);	1718	ev_stop (EV_A_ (W)w);
1428		1719
1429	fd_change (EV_A_ w->fd);	1720	fd_change (EV_A_ w->fd, 1);
1430	}	1721	}
1431		1722
1432	void	1723	void noinline
1433	ev_timer_start (EV_P_ struct ev_timer *w)	1724	ev_timer_start (EV_P_ ev_timer *w)
1434	{	1725	{
1435	if (expect_false (ev_is_active (w)))	1726	if (expect_false (ev_is_active (w)))
1436	return;	1727	return;
1437		1728
1438	((WT)w)->at += mn_now;	1729	((WT)w)->at += mn_now;
1439		1730
1440	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1731	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1441		1732
1442	ev_start (EV_A_ (W)w, ++timercnt);	1733	ev_start (EV_A_ (W)w, ++timercnt);
1443	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);	1734	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1444	timers [timercnt - 1] = w;	1735	timers [timercnt - 1] = (WT)w;
1445	upheap ((WT *)timers, timercnt - 1);	1736	upheap (timers, timercnt - 1);
1446		1737
1447	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1738	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1448	}	1739	}
1449		1740
1450	void	1741	void noinline
1451	ev_timer_stop (EV_P_ struct ev_timer *w)	1742	ev_timer_stop (EV_P_ ev_timer *w)
1452	{	1743	{
1453	ev_clear_pending (EV_A_ (W)w);	1744	clear_pending (EV_A_ (W)w);
1454	if (expect_false (!ev_is_active (w)))	1745	if (expect_false (!ev_is_active (w)))
1455	return;	1746	return;
1456		1747
1457	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1748	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1458		1749
		1750	{
		1751	int active = ((W)w)->active;
		1752
1459	if (expect_true (((W)w)->active < timercnt--))	1753	if (expect_true (--active < --timercnt))
1460	{	1754	{
1461	timers [((W)w)->active - 1] = timers [timercnt];	1755	timers [active] = timers [timercnt];
1462	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1756	adjustheap (timers, timercnt, active);
1463	}	1757	}
		1758	}
1464		1759
1465	((WT)w)->at -= mn_now;	1760	((WT)w)->at -= mn_now;
1466		1761
1467	ev_stop (EV_A_ (W)w);	1762	ev_stop (EV_A_ (W)w);
1468	}	1763	}
1469		1764
1470	void	1765	void noinline
1471	ev_timer_again (EV_P_ struct ev_timer *w)	1766	ev_timer_again (EV_P_ ev_timer *w)
1472	{	1767	{
1473	if (ev_is_active (w))	1768	if (ev_is_active (w))
1474	{	1769	{
1475	if (w->repeat)	1770	if (w->repeat)
1476	{	1771	{
1477	((WT)w)->at = mn_now + w->repeat;	1772	((WT)w)->at = mn_now + w->repeat;
1478	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1773	adjustheap (timers, timercnt, ((W)w)->active - 1);
1479	}	1774	}
1480	else	1775	else
1481	ev_timer_stop (EV_A_ w);	1776	ev_timer_stop (EV_A_ w);
1482	}	1777	}
1483	else if (w->repeat)	1778	else if (w->repeat)
…		…
1485	w->at = w->repeat;	1780	w->at = w->repeat;
1486	ev_timer_start (EV_A_ w);	1781	ev_timer_start (EV_A_ w);
1487	}	1782	}
1488	}	1783	}
1489		1784
1490	#if EV_PERIODICS	1785	#if EV_PERIODIC_ENABLE
1491	void	1786	void noinline
1492	ev_periodic_start (EV_P_ struct ev_periodic *w)	1787	ev_periodic_start (EV_P_ ev_periodic *w)
1493	{	1788	{
1494	if (expect_false (ev_is_active (w)))	1789	if (expect_false (ev_is_active (w)))
1495	return;	1790	return;
1496		1791
1497	if (w->reschedule_cb)	1792	if (w->reschedule_cb)
1498	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1793	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1499	else if (w->interval)	1794	else if (w->interval)
1500	{	1795	{
1501	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1796	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1502	/* this formula differs from the one in periodic_reify because we do not always round up */	1797	/* this formula differs from the one in periodic_reify because we do not always round up */
1503	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1798	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1504	}	1799	}
		1800	else
		1801	((WT)w)->at = w->offset;
1505		1802
1506	ev_start (EV_A_ (W)w, ++periodiccnt);	1803	ev_start (EV_A_ (W)w, ++periodiccnt);
1507	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1804	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1508	periodics [periodiccnt - 1] = w;	1805	periodics [periodiccnt - 1] = (WT)w;
1509	upheap ((WT *)periodics, periodiccnt - 1);	1806	upheap (periodics, periodiccnt - 1);
1510		1807
1511	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1808	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1512	}	1809	}
1513		1810
1514	void	1811	void noinline
1515	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1812	ev_periodic_stop (EV_P_ ev_periodic *w)
1516	{	1813	{
1517	ev_clear_pending (EV_A_ (W)w);	1814	clear_pending (EV_A_ (W)w);
1518	if (expect_false (!ev_is_active (w)))	1815	if (expect_false (!ev_is_active (w)))
1519	return;	1816	return;
1520		1817
1521	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1818	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1522		1819
		1820	{
		1821	int active = ((W)w)->active;
		1822
1523	if (expect_true (((W)w)->active < periodiccnt--))	1823	if (expect_true (--active < --periodiccnt))
1524	{	1824	{
1525	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1825	periodics [active] = periodics [periodiccnt];
1526	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1826	adjustheap (periodics, periodiccnt, active);
1527	}	1827	}
		1828	}
1528		1829
1529	ev_stop (EV_A_ (W)w);	1830	ev_stop (EV_A_ (W)w);
1530	}	1831	}
1531		1832
1532	void	1833	void noinline
1533	ev_periodic_again (EV_P_ struct ev_periodic *w)	1834	ev_periodic_again (EV_P_ ev_periodic *w)
1534	{	1835	{
1535	/* TODO: use adjustheap and recalculation */	1836	/* TODO: use adjustheap and recalculation */
1536	ev_periodic_stop (EV_A_ w);	1837	ev_periodic_stop (EV_A_ w);
1537	ev_periodic_start (EV_A_ w);	1838	ev_periodic_start (EV_A_ w);
1538	}	1839	}
1539	#endif	1840	#endif
1540		1841
1541	void
1542	ev_idle_start (EV_P_ struct ev_idle *w)
1543	{
1544	if (expect_false (ev_is_active (w)))
1545	return;
1546
1547	ev_start (EV_A_ (W)w, ++idlecnt);
1548	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1549	idles [idlecnt - 1] = w;
1550	}
1551
1552	void
1553	ev_idle_stop (EV_P_ struct ev_idle *w)
1554	{
1555	ev_clear_pending (EV_A_ (W)w);
1556	if (expect_false (!ev_is_active (w)))
1557	return;
1558
1559	idles [((W)w)->active - 1] = idles [--idlecnt];
1560	ev_stop (EV_A_ (W)w);
1561	}
1562
1563	void
1564	ev_prepare_start (EV_P_ struct ev_prepare *w)
1565	{
1566	if (expect_false (ev_is_active (w)))
1567	return;
1568
1569	ev_start (EV_A_ (W)w, ++preparecnt);
1570	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1571	prepares [preparecnt - 1] = w;
1572	}
1573
1574	void
1575	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1576	{
1577	ev_clear_pending (EV_A_ (W)w);
1578	if (expect_false (!ev_is_active (w)))
1579	return;
1580
1581	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1582	ev_stop (EV_A_ (W)w);
1583	}
1584
1585	void
1586	ev_check_start (EV_P_ struct ev_check *w)
1587	{
1588	if (expect_false (ev_is_active (w)))
1589	return;
1590
1591	ev_start (EV_A_ (W)w, ++checkcnt);
1592	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1593	checks [checkcnt - 1] = w;
1594	}
1595
1596	void
1597	ev_check_stop (EV_P_ struct ev_check *w)
1598	{
1599	ev_clear_pending (EV_A_ (W)w);
1600	if (expect_false (!ev_is_active (w)))
1601	return;
1602
1603	checks [((W)w)->active - 1] = checks [--checkcnt];
1604	ev_stop (EV_A_ (W)w);
1605	}
1606
1607	#ifndef SA_RESTART	1842	#ifndef SA_RESTART
1608	# define SA_RESTART 0	1843	# define SA_RESTART 0
1609	#endif	1844	#endif
1610		1845
1611	void	1846	void noinline
1612	ev_signal_start (EV_P_ struct ev_signal *w)	1847	ev_signal_start (EV_P_ ev_signal *w)
1613	{	1848	{
1614	#if EV_MULTIPLICITY	1849	#if EV_MULTIPLICITY
1615	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1850	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1616	#endif	1851	#endif
1617	if (expect_false (ev_is_active (w)))	1852	if (expect_false (ev_is_active (w)))
1618	return;	1853	return;
1619		1854
1620	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1855	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1621		1856
		1857	{
		1858	#ifndef _WIN32
		1859	sigset_t full, prev;
		1860	sigfillset (&full);
		1861	sigprocmask (SIG_SETMASK, &full, &prev);
		1862	#endif
		1863
		1864	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1865
		1866	#ifndef _WIN32
		1867	sigprocmask (SIG_SETMASK, &prev, 0);
		1868	#endif
		1869	}
		1870
1622	ev_start (EV_A_ (W)w, 1);	1871	ev_start (EV_A_ (W)w, 1);
1623	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1624	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1872	wlist_add (&signals [w->signum - 1].head, (WL)w);
1625		1873
1626	if (!((WL)w)->next)	1874	if (!((WL)w)->next)
1627	{	1875	{
1628	#if _WIN32	1876	#if _WIN32
1629	signal (w->signum, sighandler);	1877	signal (w->signum, sighandler);
…		…
1635	sigaction (w->signum, &sa, 0);	1883	sigaction (w->signum, &sa, 0);
1636	#endif	1884	#endif
1637	}	1885	}
1638	}	1886	}
1639		1887
1640	void	1888	void noinline
1641	ev_signal_stop (EV_P_ struct ev_signal *w)	1889	ev_signal_stop (EV_P_ ev_signal *w)
1642	{	1890	{
1643	ev_clear_pending (EV_A_ (W)w);	1891	clear_pending (EV_A_ (W)w);
1644	if (expect_false (!ev_is_active (w)))	1892	if (expect_false (!ev_is_active (w)))
1645	return;	1893	return;
1646		1894
1647	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1895	wlist_del (&signals [w->signum - 1].head, (WL)w);
1648	ev_stop (EV_A_ (W)w);	1896	ev_stop (EV_A_ (W)w);
1649		1897
1650	if (!signals [w->signum - 1].head)	1898	if (!signals [w->signum - 1].head)
1651	signal (w->signum, SIG_DFL);	1899	signal (w->signum, SIG_DFL);
1652	}	1900	}
1653		1901
1654	void	1902	void
1655	ev_child_start (EV_P_ struct ev_child *w)	1903	ev_child_start (EV_P_ ev_child *w)
1656	{	1904	{
1657	#if EV_MULTIPLICITY	1905	#if EV_MULTIPLICITY
1658	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1906	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1659	#endif	1907	#endif
1660	if (expect_false (ev_is_active (w)))	1908	if (expect_false (ev_is_active (w)))
1661	return;	1909	return;
1662		1910
1663	ev_start (EV_A_ (W)w, 1);	1911	ev_start (EV_A_ (W)w, 1);
1664	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1912	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1665	}	1913	}
1666		1914
1667	void	1915	void
1668	ev_child_stop (EV_P_ struct ev_child *w)	1916	ev_child_stop (EV_P_ ev_child *w)
1669	{	1917	{
1670	ev_clear_pending (EV_A_ (W)w);	1918	clear_pending (EV_A_ (W)w);
1671	if (expect_false (!ev_is_active (w)))	1919	if (expect_false (!ev_is_active (w)))
1672	return;	1920	return;
1673		1921
1674	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1922	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1675	ev_stop (EV_A_ (W)w);	1923	ev_stop (EV_A_ (W)w);
1676	}	1924	}
1677		1925
1678	#if EV_MULTIPLICITY	1926	#if EV_STAT_ENABLE
		1927
		1928	# ifdef _WIN32
		1929	# undef lstat
		1930	# define lstat(a,b) _stati64 (a,b)
		1931	# endif
		1932
		1933	#define DEF_STAT_INTERVAL 5.0074891
		1934	#define MIN_STAT_INTERVAL 0.1074891
		1935
		1936	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1937
		1938	#if EV_USE_INOTIFY
		1939	# define EV_INOTIFY_BUFSIZE 8192
		1940
		1941	static void noinline
		1942	infy_add (EV_P_ ev_stat *w)
		1943	{
		1944	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
		1945
		1946	if (w->wd < 0)
		1947	{
		1948	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1949
		1950	/* monitor some parent directory for speedup hints */
		1951	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1952	{
		1953	char path [4096];
		1954	strcpy (path, w->path);
		1955
		1956	do
		1957	{
		1958	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1959	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1960
		1961	char *pend = strrchr (path, '/');
		1962
		1963	if (!pend)
		1964	break; /* whoops, no '/', complain to your admin */
		1965
		1966	*pend = 0;
		1967	w->wd = inotify_add_watch (fs_fd, path, mask);
		1968	}
		1969	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1970	}
		1971	}
		1972	else
		1973	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1974
		1975	if (w->wd >= 0)
		1976	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1977	}
		1978
		1979	static void noinline
		1980	infy_del (EV_P_ ev_stat *w)
		1981	{
		1982	int slot;
		1983	int wd = w->wd;
		1984
		1985	if (wd < 0)
		1986	return;
		1987
		1988	w->wd = -2;
		1989	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1990	wlist_del (&fs_hash [slot].head, (WL)w);
		1991
		1992	/* remove this watcher, if others are watching it, they will rearm */
		1993	inotify_rm_watch (fs_fd, wd);
		1994	}
		1995
		1996	static void noinline
		1997	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1998	{
		1999	if (slot < 0)
		2000	/* overflow, need to check for all hahs slots */
		2001	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2002	infy_wd (EV_A_ slot, wd, ev);
		2003	else
		2004	{
		2005	WL w_;
		2006
		2007	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		2008	{
		2009	ev_stat *w = (ev_stat *)w_;
		2010	w_ = w_->next; /* lets us remove this watcher and all before it */
		2011
		2012	if (w->wd == wd || wd == -1)
		2013	{
		2014	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		2015	{
		2016	w->wd = -1;
		2017	infy_add (EV_A_ w); /* re-add, no matter what */
		2018	}
		2019
		2020	stat_timer_cb (EV_A_ &w->timer, 0);
		2021	}
		2022	}
		2023	}
		2024	}
		2025
1679	static void	2026	static void
1680	embed_cb (EV_P_ struct ev_io *io, int revents)	2027	infy_cb (EV_P_ ev_io *w, int revents)
1681	{	2028	{
1682	struct ev_embed *w = (struct ev_embed *)(((char *)io) - offsetof (struct ev_embed, io));	2029	char buf [EV_INOTIFY_BUFSIZE];
		2030	struct inotify_event *ev = (struct inotify_event *)buf;
		2031	int ofs;
		2032	int len = read (fs_fd, buf, sizeof (buf));
1683		2033
		2034	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2035	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2036	}
		2037
		2038	void inline_size
		2039	infy_init (EV_P)
		2040	{
		2041	if (fs_fd != -2)
		2042	return;
		2043
		2044	fs_fd = inotify_init ();
		2045
		2046	if (fs_fd >= 0)
		2047	{
		2048	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2049	ev_set_priority (&fs_w, EV_MAXPRI);
		2050	ev_io_start (EV_A_ &fs_w);
		2051	}
		2052	}
		2053
		2054	void inline_size
		2055	infy_fork (EV_P)
		2056	{
		2057	int slot;
		2058
		2059	if (fs_fd < 0)
		2060	return;
		2061
		2062	close (fs_fd);
		2063	fs_fd = inotify_init ();
		2064
		2065	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2066	{
		2067	WL w_ = fs_hash [slot].head;
		2068	fs_hash [slot].head = 0;
		2069
		2070	while (w_)
		2071	{
		2072	ev_stat *w = (ev_stat *)w_;
		2073	w_ = w_->next; /* lets us add this watcher */
		2074
		2075	w->wd = -1;
		2076
		2077	if (fs_fd >= 0)
		2078	infy_add (EV_A_ w); /* re-add, no matter what */
		2079	else
		2080	ev_timer_start (EV_A_ &w->timer);
		2081	}
		2082
		2083	}
		2084	}
		2085
		2086	#endif
		2087
		2088	void
		2089	ev_stat_stat (EV_P_ ev_stat *w)
		2090	{
		2091	if (lstat (w->path, &w->attr) < 0)
		2092	w->attr.st_nlink = 0;
		2093	else if (!w->attr.st_nlink)
		2094	w->attr.st_nlink = 1;
		2095	}
		2096
		2097	static void noinline
		2098	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2099	{
		2100	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2101
		2102	/* we copy this here each the time so that */
		2103	/* prev has the old value when the callback gets invoked */
		2104	w->prev = w->attr;
		2105	ev_stat_stat (EV_A_ w);
		2106
		2107	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2108	if (
		2109	w->prev.st_dev != w->attr.st_dev
		2110	|| w->prev.st_ino != w->attr.st_ino
		2111	|| w->prev.st_mode != w->attr.st_mode
		2112	|| w->prev.st_nlink != w->attr.st_nlink
		2113	|| w->prev.st_uid != w->attr.st_uid
		2114	|| w->prev.st_gid != w->attr.st_gid
		2115	|| w->prev.st_rdev != w->attr.st_rdev
		2116	|| w->prev.st_size != w->attr.st_size
		2117	|| w->prev.st_atime != w->attr.st_atime
		2118	|| w->prev.st_mtime != w->attr.st_mtime
		2119	|| w->prev.st_ctime != w->attr.st_ctime
		2120	) {
		2121	#if EV_USE_INOTIFY
		2122	infy_del (EV_A_ w);
		2123	infy_add (EV_A_ w);
		2124	ev_stat_stat (EV_A_ w); /* avoid race... */
		2125	#endif
		2126
1684	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2127	ev_feed_event (EV_A_ w, EV_STAT);
1685	ev_loop (w->loop, EVLOOP_NONBLOCK);	2128	}
1686	}	2129	}
1687		2130
1688	void	2131	void
1689	ev_embed_start (EV_P_ struct ev_embed *w)	2132	ev_stat_start (EV_P_ ev_stat *w)
1690	{	2133	{
1691	if (expect_false (ev_is_active (w)))	2134	if (expect_false (ev_is_active (w)))
1692	return;	2135	return;
1693		2136
		2137	/* since we use memcmp, we need to clear any padding data etc. */
		2138	memset (&w->prev, 0, sizeof (ev_statdata));
		2139	memset (&w->attr, 0, sizeof (ev_statdata));
		2140
		2141	ev_stat_stat (EV_A_ w);
		2142
		2143	if (w->interval < MIN_STAT_INTERVAL)
		2144	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2145
		2146	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2147	ev_set_priority (&w->timer, ev_priority (w));
		2148
		2149	#if EV_USE_INOTIFY
		2150	infy_init (EV_A);
		2151
		2152	if (fs_fd >= 0)
		2153	infy_add (EV_A_ w);
		2154	else
		2155	#endif
		2156	ev_timer_start (EV_A_ &w->timer);
		2157
		2158	ev_start (EV_A_ (W)w, 1);
		2159	}
		2160
		2161	void
		2162	ev_stat_stop (EV_P_ ev_stat *w)
		2163	{
		2164	clear_pending (EV_A_ (W)w);
		2165	if (expect_false (!ev_is_active (w)))
		2166	return;
		2167
		2168	#if EV_USE_INOTIFY
		2169	infy_del (EV_A_ w);
		2170	#endif
		2171	ev_timer_stop (EV_A_ &w->timer);
		2172
		2173	ev_stop (EV_A_ (W)w);
		2174	}
		2175	#endif
		2176
		2177	#if EV_IDLE_ENABLE
		2178	void
		2179	ev_idle_start (EV_P_ ev_idle *w)
		2180	{
		2181	if (expect_false (ev_is_active (w)))
		2182	return;
		2183
		2184	pri_adjust (EV_A_ (W)w);
		2185
1694	{	2186	{
		2187	int active = ++idlecnt [ABSPRI (w)];
		2188
		2189	++idleall;
		2190	ev_start (EV_A_ (W)w, active);
		2191
		2192	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2193	idles [ABSPRI (w)][active - 1] = w;
		2194	}
		2195	}
		2196
		2197	void
		2198	ev_idle_stop (EV_P_ ev_idle *w)
		2199	{
		2200	clear_pending (EV_A_ (W)w);
		2201	if (expect_false (!ev_is_active (w)))
		2202	return;
		2203
		2204	{
		2205	int active = ((W)w)->active;
		2206
		2207	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2208	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2209
		2210	ev_stop (EV_A_ (W)w);
		2211	--idleall;
		2212	}
		2213	}
		2214	#endif
		2215
		2216	void
		2217	ev_prepare_start (EV_P_ ev_prepare *w)
		2218	{
		2219	if (expect_false (ev_is_active (w)))
		2220	return;
		2221
		2222	ev_start (EV_A_ (W)w, ++preparecnt);
		2223	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2224	prepares [preparecnt - 1] = w;
		2225	}
		2226
		2227	void
		2228	ev_prepare_stop (EV_P_ ev_prepare *w)
		2229	{
		2230	clear_pending (EV_A_ (W)w);
		2231	if (expect_false (!ev_is_active (w)))
		2232	return;
		2233
		2234	{
		2235	int active = ((W)w)->active;
		2236	prepares [active - 1] = prepares [--preparecnt];
		2237	((W)prepares [active - 1])->active = active;
		2238	}
		2239
		2240	ev_stop (EV_A_ (W)w);
		2241	}
		2242
		2243	void
		2244	ev_check_start (EV_P_ ev_check *w)
		2245	{
		2246	if (expect_false (ev_is_active (w)))
		2247	return;
		2248
		2249	ev_start (EV_A_ (W)w, ++checkcnt);
		2250	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2251	checks [checkcnt - 1] = w;
		2252	}
		2253
		2254	void
		2255	ev_check_stop (EV_P_ ev_check *w)
		2256	{
		2257	clear_pending (EV_A_ (W)w);
		2258	if (expect_false (!ev_is_active (w)))
		2259	return;
		2260
		2261	{
		2262	int active = ((W)w)->active;
		2263	checks [active - 1] = checks [--checkcnt];
		2264	((W)checks [active - 1])->active = active;
		2265	}
		2266
		2267	ev_stop (EV_A_ (W)w);
		2268	}
		2269
		2270	#if EV_EMBED_ENABLE
		2271	void noinline
		2272	ev_embed_sweep (EV_P_ ev_embed *w)
		2273	{
		2274	ev_loop (w->other, EVLOOP_NONBLOCK);
		2275	}
		2276
		2277	static void
		2278	embed_io_cb (EV_P_ ev_io *io, int revents)
		2279	{
		2280	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2281
		2282	if (ev_cb (w))
		2283	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2284	else
		2285	ev_loop (w->other, EVLOOP_NONBLOCK);
		2286	}
		2287
		2288	static void
		2289	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2290	{
		2291	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2292
		2293	{
1695	struct ev_loop *loop = w->loop;	2294	struct ev_loop *loop = w->other;
		2295
		2296	while (fdchangecnt)
		2297	{
		2298	fd_reify (EV_A);
		2299	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2300	}
		2301	}
		2302	}
		2303
		2304	#if 0
		2305	static void
		2306	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2307	{
		2308	ev_idle_stop (EV_A_ idle);
		2309	}
		2310	#endif
		2311
		2312	void
		2313	ev_embed_start (EV_P_ ev_embed *w)
		2314	{
		2315	if (expect_false (ev_is_active (w)))
		2316	return;
		2317
		2318	{
		2319	struct ev_loop *loop = w->other;
1696	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2320	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1697	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2321	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
1698	}	2322	}
1699		2323
		2324	ev_set_priority (&w->io, ev_priority (w));
1700	ev_io_start (EV_A_ &w->io);	2325	ev_io_start (EV_A_ &w->io);
		2326
		2327	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2328	ev_set_priority (&w->prepare, EV_MINPRI);
		2329	ev_prepare_start (EV_A_ &w->prepare);
		2330
		2331	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2332
1701	ev_start (EV_A_ (W)w, 1);	2333	ev_start (EV_A_ (W)w, 1);
1702	}	2334	}
1703		2335
1704	void	2336	void
1705	ev_embed_stop (EV_P_ struct ev_embed *w)	2337	ev_embed_stop (EV_P_ ev_embed *w)
1706	{	2338	{
1707	ev_clear_pending (EV_A_ (W)w);	2339	clear_pending (EV_A_ (W)w);
1708	if (expect_false (!ev_is_active (w)))	2340	if (expect_false (!ev_is_active (w)))
1709	return;	2341	return;
1710		2342
1711	ev_io_stop (EV_A_ &w->io);	2343	ev_io_stop (EV_A_ &w->io);
		2344	ev_prepare_stop (EV_A_ &w->prepare);
		2345
1712	ev_stop (EV_A_ (W)w);	2346	ev_stop (EV_A_ (W)w);
1713	}	2347	}
1714	#endif	2348	#endif
1715		2349
		2350	#if EV_FORK_ENABLE
		2351	void
		2352	ev_fork_start (EV_P_ ev_fork *w)
		2353	{
		2354	if (expect_false (ev_is_active (w)))
		2355	return;
		2356
		2357	ev_start (EV_A_ (W)w, ++forkcnt);
		2358	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2359	forks [forkcnt - 1] = w;
		2360	}
		2361
		2362	void
		2363	ev_fork_stop (EV_P_ ev_fork *w)
		2364	{
		2365	clear_pending (EV_A_ (W)w);
		2366	if (expect_false (!ev_is_active (w)))
		2367	return;
		2368
		2369	{
		2370	int active = ((W)w)->active;
		2371	forks [active - 1] = forks [--forkcnt];
		2372	((W)forks [active - 1])->active = active;
		2373	}
		2374
		2375	ev_stop (EV_A_ (W)w);
		2376	}
		2377	#endif
		2378
1716	/*****************************************************************************/	2379	/*****************************************************************************/
1717		2380
1718	struct ev_once	2381	struct ev_once
1719	{	2382	{
1720	struct ev_io io;	2383	ev_io io;
1721	struct ev_timer to;	2384	ev_timer to;
1722	void (*cb)(int revents, void *arg);	2385	void (*cb)(int revents, void *arg);
1723	void *arg;	2386	void *arg;
1724	};	2387	};
1725		2388
1726	static void	2389	static void
…		…
1735		2398
1736	cb (revents, arg);	2399	cb (revents, arg);
1737	}	2400	}
1738		2401
1739	static void	2402	static void
1740	once_cb_io (EV_P_ struct ev_io *w, int revents)	2403	once_cb_io (EV_P_ ev_io *w, int revents)
1741	{	2404	{
1742	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2405	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1743	}	2406	}
1744		2407
1745	static void	2408	static void
1746	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2409	once_cb_to (EV_P_ ev_timer *w, int revents)
1747	{	2410	{
1748	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2411	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1749	}	2412	}
1750		2413
1751	void	2414	void
…		…
1775	ev_timer_set (&once->to, timeout, 0.);	2438	ev_timer_set (&once->to, timeout, 0.);
1776	ev_timer_start (EV_A_ &once->to);	2439	ev_timer_start (EV_A_ &once->to);
1777	}	2440	}
1778	}	2441	}
1779		2442
		2443	#if EV_MULTIPLICITY
		2444	#include "ev_wrap.h"
		2445	#endif
		2446
1780	#ifdef __cplusplus	2447	#ifdef __cplusplus
1781	}	2448	}
1782	#endif	2449	#endif
1783		2450

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