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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 1.249 by root, Wed May 21 23:30:52 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
…		…
94	# else	111	# else
95	# define EV_USE_PORT 0	112	# define EV_USE_PORT 0
96	# endif	113	# endif
97	# endif	114	# endif
98		115
		116	# ifndef EV_USE_INOTIFY
		117	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		118	# define EV_USE_INOTIFY 1
		119	# else
		120	# define EV_USE_INOTIFY 0
		121	# endif
		122	# endif
		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
99	#endif	132	#endif
100		133
101	#include <math.h>	134	#include <math.h>
102	#include <stdlib.h>	135	#include <stdlib.h>
103	#include <fcntl.h>	136	#include <fcntl.h>
…		…
110	#include <sys/types.h>	143	#include <sys/types.h>
111	#include <time.h>	144	#include <time.h>
112		145
113	#include <signal.h>	146	#include <signal.h>
114		147
		148	#ifdef EV_H
		149	# include EV_H
		150	#else
		151	# include "ev.h"
		152	#endif
		153
115	#ifndef _WIN32	154	#ifndef _WIN32
116	# include <unistd.h>
117	# include <sys/time.h>	155	# include <sys/time.h>
118	# include <sys/wait.h>	156	# include <sys/wait.h>
		157	# include <unistd.h>
119	#else	158	#else
120	# define WIN32_LEAN_AND_MEAN	159	# define WIN32_LEAN_AND_MEAN
121	# include <windows.h>	160	# include <windows.h>
122	# ifndef EV_SELECT_IS_WINSOCKET	161	# ifndef EV_SELECT_IS_WINSOCKET
123	# define EV_SELECT_IS_WINSOCKET 1	162	# define EV_SELECT_IS_WINSOCKET 1
124	# endif	163	# endif
125	#endif	164	#endif
126		165
127	/**/	166	/* this block tries to deduce configuration from header-defined symbols and defaults */
128		167
129	#ifndef EV_USE_MONOTONIC	168	#ifndef EV_USE_MONOTONIC
130	# define EV_USE_MONOTONIC 0	169	# define EV_USE_MONOTONIC 0
131	#endif	170	#endif
132		171
133	#ifndef EV_USE_REALTIME	172	#ifndef EV_USE_REALTIME
134	# 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
135	#endif	178	#endif
136		179
137	#ifndef EV_USE_SELECT	180	#ifndef EV_USE_SELECT
138	# define EV_USE_SELECT 1	181	# define EV_USE_SELECT 1
139	#endif	182	#endif
…		…
145	# define EV_USE_POLL 1	188	# define EV_USE_POLL 1
146	# endif	189	# endif
147	#endif	190	#endif
148		191
149	#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
150	# define EV_USE_EPOLL 0	196	# define EV_USE_EPOLL 0
		197	# endif
151	#endif	198	#endif
152		199
153	#ifndef EV_USE_KQUEUE	200	#ifndef EV_USE_KQUEUE
154	# define EV_USE_KQUEUE 0	201	# define EV_USE_KQUEUE 0
155	#endif	202	#endif
156		203
157	#ifndef EV_USE_PORT	204	#ifndef EV_USE_PORT
158	# define EV_USE_PORT 0	205	# define EV_USE_PORT 0
159	#endif	206	#endif
160		207
161	/**/	208	#ifndef EV_USE_INOTIFY
		209	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		210	# define EV_USE_INOTIFY 1
		211	# else
		212	# define EV_USE_INOTIFY 0
		213	# endif
		214	#endif
		215
		216	#ifndef EV_PID_HASHSIZE
		217	# if EV_MINIMAL
		218	# define EV_PID_HASHSIZE 1
		219	# else
		220	# define EV_PID_HASHSIZE 16
		221	# endif
		222	#endif
		223
		224	#ifndef EV_INOTIFY_HASHSIZE
		225	# if EV_MINIMAL
		226	# define EV_INOTIFY_HASHSIZE 1
		227	# else
		228	# define EV_INOTIFY_HASHSIZE 16
		229	# endif
		230	#endif
		231
		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	#if 0 /* debugging */
		241	# define EV_VERIFY 1
		242	# define EV_USE_4HEAP 1
		243	# define EV_HEAP_CACHE_AT 1
		244	#endif
		245
		246	#ifndef EV_USE_4HEAP
		247	# define EV_USE_4HEAP !EV_MINIMAL
		248	#endif
		249
		250	#ifndef EV_HEAP_CACHE_AT
		251	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		252	#endif
		253
		254	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
162		255
163	#ifndef CLOCK_MONOTONIC	256	#ifndef CLOCK_MONOTONIC
164	# undef EV_USE_MONOTONIC	257	# undef EV_USE_MONOTONIC
165	# define EV_USE_MONOTONIC 0	258	# define EV_USE_MONOTONIC 0
166	#endif	259	#endif
…		…
168	#ifndef CLOCK_REALTIME	261	#ifndef CLOCK_REALTIME
169	# undef EV_USE_REALTIME	262	# undef EV_USE_REALTIME
170	# define EV_USE_REALTIME 0	263	# define EV_USE_REALTIME 0
171	#endif	264	#endif
172		265
		266	#if !EV_STAT_ENABLE
		267	# undef EV_USE_INOTIFY
		268	# define EV_USE_INOTIFY 0
		269	#endif
		270
		271	#if !EV_USE_NANOSLEEP
		272	# ifndef _WIN32
		273	# include <sys/select.h>
		274	# endif
		275	#endif
		276
		277	#if EV_USE_INOTIFY
		278	# include <sys/inotify.h>
		279	#endif
		280
173	#if EV_SELECT_IS_WINSOCKET	281	#if EV_SELECT_IS_WINSOCKET
174	# include <winsock.h>	282	# include <winsock.h>
175	#endif	283	#endif
176		284
		285	#if EV_USE_EVENTFD
		286	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		287	# include <stdint.h>
		288	# ifdef __cplusplus
		289	extern "C" {
		290	# endif
		291	int eventfd (unsigned int initval, int flags);
		292	# ifdef __cplusplus
		293	}
		294	# endif
		295	#endif
		296
177	/**/	297	/**/
		298
		299	/* EV_VERIFY: enable internal consistency checks
		300	* undefined or zero: no verification done or available
		301	* 1 or higher: ev_loop_verify function available
		302	* 2 or higher: ev_loop_verify is called frequently
		303	*/
		304	#if EV_VERIFY >= 1
		305	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		306	#else
		307	# define EV_FREQUENT_CHECK do { } while (0)
		308	#endif
		309
		310	/*
		311	* This is used to avoid floating point rounding problems.
		312	* It is added to ev_rt_now when scheduling periodics
		313	* to ensure progress, time-wise, even when rounding
		314	* errors are against us.
		315	* This value is good at least till the year 4000.
		316	* Better solutions welcome.
		317	*/
		318	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
178		319
179	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	320	#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) */	321	#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 */	322	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
183		323
184	#ifdef EV_H
185	# include EV_H
186	#else
187	# include "ev.h"
188	#endif
189
190	#if __GNUC__ >= 3	324	#if __GNUC__ >= 4
191	# define expect(expr,value) __builtin_expect ((expr),(value))	325	# define expect(expr,value) __builtin_expect ((expr),(value))
192	# define inline static inline	326	# define noinline __attribute__ ((noinline))
193	#else	327	#else
194	# define expect(expr,value) (expr)	328	# define expect(expr,value) (expr)
195	# define inline static	329	# define noinline
		330	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
		331	# define inline
		332	# endif
196	#endif	333	#endif
197		334
198	#define expect_false(expr) expect ((expr) != 0, 0)	335	#define expect_false(expr) expect ((expr) != 0, 0)
199	#define expect_true(expr) expect ((expr) != 0, 1)	336	#define expect_true(expr) expect ((expr) != 0, 1)
		337	#define inline_size static inline
		338
		339	#if EV_MINIMAL
		340	# define inline_speed static noinline
		341	#else
		342	# define inline_speed static inline
		343	#endif
200		344
201	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	345	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
202	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	346	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
203		347
204	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	348	#define EMPTY /* required for microsofts broken pseudo-c compiler */
205	#define EMPTY2(a,b) /* used to suppress some warnings */	349	#define EMPTY2(a,b) /* used to suppress some warnings */
206		350
207	typedef struct ev_watcher *W;	351	typedef ev_watcher *W;
208	typedef struct ev_watcher_list *WL;	352	typedef ev_watcher_list *WL;
209	typedef struct ev_watcher_time *WT;	353	typedef ev_watcher_time *WT;
210		354
		355	#define ev_active(w) ((W)(w))->active
		356	#define ev_at(w) ((WT)(w))->at
		357
		358	#if EV_USE_MONOTONIC
		359	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		360	/* giving it a reasonably high chance of working on typical architetcures */
211	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	361	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		362	#endif
212		363
213	#ifdef _WIN32	364	#ifdef _WIN32
214	# include "ev_win32.c"	365	# include "ev_win32.c"
215	#endif	366	#endif
216		367
217	/*****************************************************************************/	368	/*****************************************************************************/
218		369
219	static void (*syserr_cb)(const char *msg);	370	static void (*syserr_cb)(const char *msg);
220		371
		372	void
221	void ev_set_syserr_cb (void (*cb)(const char *msg))	373	ev_set_syserr_cb (void (*cb)(const char *msg))
222	{	374	{
223	syserr_cb = cb;	375	syserr_cb = cb;
224	}	376	}
225		377
226	static void	378	static void noinline
227	syserr (const char *msg)	379	syserr (const char *msg)
228	{	380	{
229	if (!msg)	381	if (!msg)
230	msg = "(libev) system error";	382	msg = "(libev) system error";
231		383
…		…
236	perror (msg);	388	perror (msg);
237	abort ();	389	abort ();
238	}	390	}
239	}	391	}
240		392
		393	static void *
		394	ev_realloc_emul (void *ptr, long size)
		395	{
		396	/* some systems, notably openbsd and darwin, fail to properly
		397	* implement realloc (x, 0) (as required by both ansi c-98 and
		398	* the single unix specification, so work around them here.
		399	*/
		400
		401	if (size)
		402	return realloc (ptr, size);
		403
		404	free (ptr);
		405	return 0;
		406	}
		407
241	static void *(*alloc)(void *ptr, long size);	408	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
242		409
		410	void
243	void ev_set_allocator (void *(*cb)(void *ptr, long size))	411	ev_set_allocator (void *(*cb)(void *ptr, long size))
244	{	412	{
245	alloc = cb;	413	alloc = cb;
246	}	414	}
247		415
248	static void *	416	inline_speed void *
249	ev_realloc (void *ptr, long size)	417	ev_realloc (void *ptr, long size)
250	{	418	{
251	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	419	ptr = alloc (ptr, size);
252		420
253	if (!ptr && size)	421	if (!ptr && size)
254	{	422	{
255	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	423	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
256	abort ();	424	abort ();
…		…
277	typedef struct	445	typedef struct
278	{	446	{
279	W w;	447	W w;
280	int events;	448	int events;
281	} ANPENDING;	449	} ANPENDING;
		450
		451	#if EV_USE_INOTIFY
		452	/* hash table entry per inotify-id */
		453	typedef struct
		454	{
		455	WL head;
		456	} ANFS;
		457	#endif
		458
		459	/* Heap Entry */
		460	#if EV_HEAP_CACHE_AT
		461	typedef struct {
		462	ev_tstamp at;
		463	WT w;
		464	} ANHE;
		465
		466	#define ANHE_w(he) (he).w /* access watcher, read-write */
		467	#define ANHE_at(he) (he).at /* access cached at, read-only */
		468	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		469	#else
		470	typedef WT ANHE;
		471
		472	#define ANHE_w(he) (he)
		473	#define ANHE_at(he) (he)->at
		474	#define ANHE_at_cache(he)
		475	#endif
282		476
283	#if EV_MULTIPLICITY	477	#if EV_MULTIPLICITY
284		478
285	struct ev_loop	479	struct ev_loop
286	{	480	{
…		…
320	gettimeofday (&tv, 0);	514	gettimeofday (&tv, 0);
321	return tv.tv_sec + tv.tv_usec * 1e-6;	515	return tv.tv_sec + tv.tv_usec * 1e-6;
322	#endif	516	#endif
323	}	517	}
324		518
325	inline ev_tstamp	519	ev_tstamp inline_size
326	get_clock (void)	520	get_clock (void)
327	{	521	{
328	#if EV_USE_MONOTONIC	522	#if EV_USE_MONOTONIC
329	if (expect_true (have_monotonic))	523	if (expect_true (have_monotonic))
330	{	524	{
…		…
343	{	537	{
344	return ev_rt_now;	538	return ev_rt_now;
345	}	539	}
346	#endif	540	#endif
347		541
348	#define array_roundsize(type,n) (((n) | 4) & ~3)	542	void
		543	ev_sleep (ev_tstamp delay)
		544	{
		545	if (delay > 0.)
		546	{
		547	#if EV_USE_NANOSLEEP
		548	struct timespec ts;
		549
		550	ts.tv_sec = (time_t)delay;
		551	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		552
		553	nanosleep (&ts, 0);
		554	#elif defined(_WIN32)
		555	Sleep ((unsigned long)(delay * 1e3));
		556	#else
		557	struct timeval tv;
		558
		559	tv.tv_sec = (time_t)delay;
		560	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		561
		562	select (0, 0, 0, 0, &tv);
		563	#endif
		564	}
		565	}
		566
		567	/*****************************************************************************/
		568
		569	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		570
		571	int inline_size
		572	array_nextsize (int elem, int cur, int cnt)
		573	{
		574	int ncur = cur + 1;
		575
		576	do
		577	ncur <<= 1;
		578	while (cnt > ncur);
		579
		580	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
		581	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
		582	{
		583	ncur *= elem;
		584	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
		585	ncur = ncur - sizeof (void *) * 4;
		586	ncur /= elem;
		587	}
		588
		589	return ncur;
		590	}
		591
		592	static noinline void *
		593	array_realloc (int elem, void *base, int *cur, int cnt)
		594	{
		595	*cur = array_nextsize (elem, *cur, cnt);
		596	return ev_realloc (base, elem * *cur);
		597	}
349		598
350	#define array_needsize(type,base,cur,cnt,init) \	599	#define array_needsize(type,base,cur,cnt,init) \
351	if (expect_false ((cnt) > cur)) \	600	if (expect_false ((cnt) > (cur))) \
352	{ \	601	{ \
353	int newcnt = cur; \	602	int ocur_ = (cur); \
354	do \	603	(base) = (type *)array_realloc \
355	{ \	604	(sizeof (type), (base), &(cur), (cnt)); \
356	newcnt = array_roundsize (type, newcnt << 1); \	605	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	}	606	}
364		607
		608	#if 0
365	#define array_slim(type,stem) \	609	#define array_slim(type,stem) \
366	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	610	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
367	{ \	611	{ \
368	stem ## max = array_roundsize (stem ## cnt >> 1); \	612	stem ## max = array_roundsize (stem ## cnt >> 1); \
369	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	613	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
370	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	614	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
371	}	615	}
		616	#endif
372		617
373	#define array_free(stem, idx) \	618	#define array_free(stem, idx) \
374	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	619	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
375		620
376	/*****************************************************************************/	621	/*****************************************************************************/
377		622
378	static void	623	void noinline
		624	ev_feed_event (EV_P_ void *w, int revents)
		625	{
		626	W w_ = (W)w;
		627	int pri = ABSPRI (w_);
		628
		629	if (expect_false (w_->pending))
		630	pendings [pri][w_->pending - 1].events |= revents;
		631	else
		632	{
		633	w_->pending = ++pendingcnt [pri];
		634	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		635	pendings [pri][w_->pending - 1].w = w_;
		636	pendings [pri][w_->pending - 1].events = revents;
		637	}
		638	}
		639
		640	void inline_speed
		641	queue_events (EV_P_ W *events, int eventcnt, int type)
		642	{
		643	int i;
		644
		645	for (i = 0; i < eventcnt; ++i)
		646	ev_feed_event (EV_A_ events [i], type);
		647	}
		648
		649	/*****************************************************************************/
		650
		651	void inline_size
379	anfds_init (ANFD *base, int count)	652	anfds_init (ANFD *base, int count)
380	{	653	{
381	while (count--)	654	while (count--)
382	{	655	{
383	base->head = 0;	656	base->head = 0;
…		…
386		659
387	++base;	660	++base;
388	}	661	}
389	}	662	}
390		663
391	void	664	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)	665	fd_event (EV_P_ int fd, int revents)
422	{	666	{
423	ANFD *anfd = anfds + fd;	667	ANFD *anfd = anfds + fd;
424	struct ev_io *w;	668	ev_io *w;
425		669
426	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	670	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
427	{	671	{
428	int ev = w->events & revents;	672	int ev = w->events & revents;
429		673
430	if (ev)	674	if (ev)
431	ev_feed_event (EV_A_ (W)w, ev);	675	ev_feed_event (EV_A_ (W)w, ev);
…		…
433	}	677	}
434		678
435	void	679	void
436	ev_feed_fd_event (EV_P_ int fd, int revents)	680	ev_feed_fd_event (EV_P_ int fd, int revents)
437	{	681	{
		682	if (fd >= 0 && fd < anfdmax)
438	fd_event (EV_A_ fd, revents);	683	fd_event (EV_A_ fd, revents);
439	}	684	}
440		685
441	/*****************************************************************************/	686	void inline_size
442
443	inline void
444	fd_reify (EV_P)	687	fd_reify (EV_P)
445	{	688	{
446	int i;	689	int i;
447		690
448	for (i = 0; i < fdchangecnt; ++i)	691	for (i = 0; i < fdchangecnt; ++i)
449	{	692	{
450	int fd = fdchanges [i];	693	int fd = fdchanges [i];
451	ANFD *anfd = anfds + fd;	694	ANFD *anfd = anfds + fd;
452	struct ev_io *w;	695	ev_io *w;
453		696
454	int events = 0;	697	unsigned char events = 0;
455		698
456	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	699	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
457	events |= w->events;	700	events |= (unsigned char)w->events;
458		701
459	#if EV_SELECT_IS_WINSOCKET	702	#if EV_SELECT_IS_WINSOCKET
460	if (events)	703	if (events)
461	{	704	{
462	unsigned long argp;	705	unsigned long argp;
		706	#ifdef EV_FD_TO_WIN32_HANDLE
		707	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		708	#else
463	anfd->handle = _get_osfhandle (fd);	709	anfd->handle = _get_osfhandle (fd);
		710	#endif
464	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	711	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
465	}	712	}
466	#endif	713	#endif
467		714
		715	{
		716	unsigned char o_events = anfd->events;
		717	unsigned char o_reify = anfd->reify;
		718
468	anfd->reify = 0;	719	anfd->reify = 0;
469
470	backend_modify (EV_A_ fd, anfd->events, events);
471	anfd->events = events;	720	anfd->events = events;
		721
		722	if (o_events != events || o_reify & EV_IOFDSET)
		723	backend_modify (EV_A_ fd, o_events, events);
		724	}
472	}	725	}
473		726
474	fdchangecnt = 0;	727	fdchangecnt = 0;
475	}	728	}
476		729
477	static void	730	void inline_size
478	fd_change (EV_P_ int fd)	731	fd_change (EV_P_ int fd, int flags)
479	{	732	{
480	if (expect_false (anfds [fd].reify))	733	unsigned char reify = anfds [fd].reify;
481	return;
482
483	anfds [fd].reify = 1;	734	anfds [fd].reify |= flags;
484		735
		736	if (expect_true (!reify))
		737	{
485	++fdchangecnt;	738	++fdchangecnt;
486	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	739	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
487	fdchanges [fdchangecnt - 1] = fd;	740	fdchanges [fdchangecnt - 1] = fd;
		741	}
488	}	742	}
489		743
490	static void	744	void inline_speed
491	fd_kill (EV_P_ int fd)	745	fd_kill (EV_P_ int fd)
492	{	746	{
493	struct ev_io *w;	747	ev_io *w;
494		748
495	while ((w = (struct ev_io *)anfds [fd].head))	749	while ((w = (ev_io *)anfds [fd].head))
496	{	750	{
497	ev_io_stop (EV_A_ w);	751	ev_io_stop (EV_A_ w);
498	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	752	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
499	}	753	}
500	}	754	}
501		755
502	inline int	756	int inline_size
503	fd_valid (int fd)	757	fd_valid (int fd)
504	{	758	{
505	#ifdef _WIN32	759	#ifdef _WIN32
506	return _get_osfhandle (fd) != -1;	760	return _get_osfhandle (fd) != -1;
507	#else	761	#else
508	return fcntl (fd, F_GETFD) != -1;	762	return fcntl (fd, F_GETFD) != -1;
509	#endif	763	#endif
510	}	764	}
511		765
512	/* called on EBADF to verify fds */	766	/* called on EBADF to verify fds */
513	static void	767	static void noinline
514	fd_ebadf (EV_P)	768	fd_ebadf (EV_P)
515	{	769	{
516	int fd;	770	int fd;
517		771
518	for (fd = 0; fd < anfdmax; ++fd)	772	for (fd = 0; fd < anfdmax; ++fd)
…		…
520	if (!fd_valid (fd) == -1 && errno == EBADF)	774	if (!fd_valid (fd) == -1 && errno == EBADF)
521	fd_kill (EV_A_ fd);	775	fd_kill (EV_A_ fd);
522	}	776	}
523		777
524	/* called on ENOMEM in select/poll to kill some fds and retry */	778	/* called on ENOMEM in select/poll to kill some fds and retry */
525	static void	779	static void noinline
526	fd_enomem (EV_P)	780	fd_enomem (EV_P)
527	{	781	{
528	int fd;	782	int fd;
529		783
530	for (fd = anfdmax; fd--; )	784	for (fd = anfdmax; fd--; )
…		…
534	return;	788	return;
535	}	789	}
536	}	790	}
537		791
538	/* usually called after fork if backend needs to re-arm all fds from scratch */	792	/* usually called after fork if backend needs to re-arm all fds from scratch */
539	static void	793	static void noinline
540	fd_rearm_all (EV_P)	794	fd_rearm_all (EV_P)
541	{	795	{
542	int fd;	796	int fd;
543		797
544	/* this should be highly optimised to not do anything but set a flag */
545	for (fd = 0; fd < anfdmax; ++fd)	798	for (fd = 0; fd < anfdmax; ++fd)
546	if (anfds [fd].events)	799	if (anfds [fd].events)
547	{	800	{
548	anfds [fd].events = 0;	801	anfds [fd].events = 0;
549	fd_change (EV_A_ fd);	802	fd_change (EV_A_ fd, EV_IOFDSET | 1);
550	}	803	}
551	}	804	}
552		805
553	/*****************************************************************************/	806	/*****************************************************************************/
554		807
		808	/*
		809	* the heap functions want a real array index. array index 0 uis guaranteed to not
		810	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		811	* the branching factor of the d-tree.
		812	*/
		813
		814	/*
		815	* at the moment we allow libev the luxury of two heaps,
		816	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		817	* which is more cache-efficient.
		818	* the difference is about 5% with 50000+ watchers.
		819	*/
		820	#if EV_USE_4HEAP
		821
		822	#define DHEAP 4
		823	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		824	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		825	#define UPHEAP_DONE(p,k) ((p) == (k))
		826
		827	/* away from the root */
		828	void inline_speed
		829	downheap (ANHE *heap, int N, int k)
		830	{
		831	ANHE he = heap [k];
		832	ANHE *E = heap + N + HEAP0;
		833
		834	for (;;)
		835	{
		836	ev_tstamp minat;
		837	ANHE *minpos;
		838	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
		839
		840	/* find minimum child */
		841	if (expect_true (pos + DHEAP - 1 < E))
		842	{
		843	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		844	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		845	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		846	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		847	}
		848	else if (pos < E)
		849	{
		850	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		851	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		852	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		853	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		854	}
		855	else
		856	break;
		857
		858	if (ANHE_at (he) <= minat)
		859	break;
		860
		861	heap [k] = *minpos;
		862	ev_active (ANHE_w (*minpos)) = k;
		863
		864	k = minpos - heap;
		865	}
		866
		867	heap [k] = he;
		868	ev_active (ANHE_w (he)) = k;
		869	}
		870
		871	#else /* 4HEAP */
		872
		873	#define HEAP0 1
		874	#define HPARENT(k) ((k) >> 1)
		875	#define UPHEAP_DONE(p,k) (!(p))
		876
		877	/* away from the root */
		878	void inline_speed
		879	downheap (ANHE *heap, int N, int k)
		880	{
		881	ANHE he = heap [k];
		882
		883	for (;;)
		884	{
		885	int c = k << 1;
		886
		887	if (c > N + HEAP0 - 1)
		888	break;
		889
		890	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		891	? 1 : 0;
		892
		893	if (ANHE_at (he) <= ANHE_at (heap [c]))
		894	break;
		895
		896	heap [k] = heap [c];
		897	ev_active (ANHE_w (heap [k])) = k;
		898
		899	k = c;
		900	}
		901
		902	heap [k] = he;
		903	ev_active (ANHE_w (he)) = k;
		904	}
		905	#endif
		906
		907	/* towards the root */
		908	void inline_speed
		909	upheap (ANHE *heap, int k)
		910	{
		911	ANHE he = heap [k];
		912
		913	for (;;)
		914	{
		915	int p = HPARENT (k);
		916
		917	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		918	break;
		919
		920	heap [k] = heap [p];
		921	ev_active (ANHE_w (heap [k])) = k;
		922	k = p;
		923	}
		924
		925	heap [k] = he;
		926	ev_active (ANHE_w (he)) = k;
		927	}
		928
		929	void inline_size
		930	adjustheap (ANHE *heap, int N, int k)
		931	{
		932	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
		933	upheap (heap, k);
		934	else
		935	downheap (heap, N, k);
		936	}
		937
		938	/* rebuild the heap: this function is used only once and executed rarely */
		939	void inline_size
		940	reheap (ANHE *heap, int N)
		941	{
		942	int i;
		943	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		944	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		945	for (i = 0; i < N; ++i)
		946	upheap (heap, i + HEAP0);
		947	}
		948
		949	#if EV_VERIFY
555	static void	950	static void
556	upheap (WT *heap, int k)	951	checkheap (ANHE *heap, int N)
557	{	952	{
558	WT w = heap [k];	953	int i;
559		954
560	while (k && heap [k >> 1]->at > w->at)	955	for (i = HEAP0; i < N + HEAP0; ++i)
561	{
562	heap [k] = heap [k >> 1];
563	((W)heap [k])->active = k + 1;
564	k >>= 1;
565	}	956	{
566		957	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
567	heap [k] = w;	958	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
568	((W)heap [k])->active = k + 1;	959	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
569
570	}
571
572	static void
573	downheap (WT *heap, int N, int k)
574	{
575	WT w = heap [k];
576
577	while (k < (N >> 1))
578	{	960	}
579	int j = k << 1;
580
581	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
582	++j;
583
584	if (w->at <= heap [j]->at)
585	break;
586
587	heap [k] = heap [j];
588	((W)heap [k])->active = k + 1;
589	k = j;
590	}
591
592	heap [k] = w;
593	((W)heap [k])->active = k + 1;
594	}	961	}
595		962	#endif
596	inline void
597	adjustheap (WT *heap, int N, int k)
598	{
599	upheap (heap, k);
600	downheap (heap, N, k);
601	}
602		963
603	/*****************************************************************************/	964	/*****************************************************************************/
604		965
605	typedef struct	966	typedef struct
606	{	967	{
607	WL head;	968	WL head;
608	sig_atomic_t volatile gotsig;	969	EV_ATOMIC_T gotsig;
609	} ANSIG;	970	} ANSIG;
610		971
611	static ANSIG *signals;	972	static ANSIG *signals;
612	static int signalmax;	973	static int signalmax;
613		974
614	static int sigpipe [2];	975	static EV_ATOMIC_T gotsig;
615	static sig_atomic_t volatile gotsig;
616	static struct ev_io sigev;
617		976
618	static void	977	void inline_size
619	signals_init (ANSIG *base, int count)	978	signals_init (ANSIG *base, int count)
620	{	979	{
621	while (count--)	980	while (count--)
622	{	981	{
623	base->head = 0;	982	base->head = 0;
…		…
625		984
626	++base;	985	++base;
627	}	986	}
628	}	987	}
629		988
630	static void	989	/*****************************************************************************/
631	sighandler (int signum)
632	{
633	#if _WIN32
634	signal (signum, sighandler);
635	#endif
636		990
637	signals [signum - 1].gotsig = 1;	991	void inline_speed
638
639	if (!gotsig)
640	{
641	int old_errno = errno;
642	gotsig = 1;
643	write (sigpipe [1], &signum, 1);
644	errno = old_errno;
645	}
646	}
647
648	void
649	ev_feed_signal_event (EV_P_ int signum)
650	{
651	WL w;
652
653	#if EV_MULTIPLICITY
654	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
655	#endif
656
657	--signum;
658
659	if (signum < 0 || signum >= signalmax)
660	return;
661
662	signals [signum].gotsig = 0;
663
664	for (w = signals [signum].head; w; w = w->next)
665	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
666	}
667
668	static void
669	sigcb (EV_P_ struct ev_io *iow, int revents)
670	{
671	int signum;
672
673	read (sigpipe [0], &revents, 1);
674	gotsig = 0;
675
676	for (signum = signalmax; signum--; )
677	if (signals [signum].gotsig)
678	ev_feed_signal_event (EV_A_ signum + 1);
679	}
680
681	static void
682	fd_intern (int fd)	992	fd_intern (int fd)
683	{	993	{
684	#ifdef _WIN32	994	#ifdef _WIN32
685	int arg = 1;	995	int arg = 1;
686	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	996	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
688	fcntl (fd, F_SETFD, FD_CLOEXEC);	998	fcntl (fd, F_SETFD, FD_CLOEXEC);
689	fcntl (fd, F_SETFL, O_NONBLOCK);	999	fcntl (fd, F_SETFL, O_NONBLOCK);
690	#endif	1000	#endif
691	}	1001	}
692		1002
		1003	static void noinline
		1004	evpipe_init (EV_P)
		1005	{
		1006	if (!ev_is_active (&pipeev))
		1007	{
		1008	#if EV_USE_EVENTFD
		1009	if ((evfd = eventfd (0, 0)) >= 0)
		1010	{
		1011	evpipe [0] = -1;
		1012	fd_intern (evfd);
		1013	ev_io_set (&pipeev, evfd, EV_READ);
		1014	}
		1015	else
		1016	#endif
		1017	{
		1018	while (pipe (evpipe))
		1019	syserr ("(libev) error creating signal/async pipe");
		1020
		1021	fd_intern (evpipe [0]);
		1022	fd_intern (evpipe [1]);
		1023	ev_io_set (&pipeev, evpipe [0], EV_READ);
		1024	}
		1025
		1026	ev_io_start (EV_A_ &pipeev);
		1027	ev_unref (EV_A); /* watcher should not keep loop alive */
		1028	}
		1029	}
		1030
		1031	void inline_size
		1032	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		1033	{
		1034	if (!*flag)
		1035	{
		1036	int old_errno = errno; /* save errno because write might clobber it */
		1037
		1038	*flag = 1;
		1039
		1040	#if EV_USE_EVENTFD
		1041	if (evfd >= 0)
		1042	{
		1043	uint64_t counter = 1;
		1044	write (evfd, &counter, sizeof (uint64_t));
		1045	}
		1046	else
		1047	#endif
		1048	write (evpipe [1], &old_errno, 1);
		1049
		1050	errno = old_errno;
		1051	}
		1052	}
		1053
693	static void	1054	static void
694	siginit (EV_P)	1055	pipecb (EV_P_ ev_io *iow, int revents)
695	{	1056	{
696	fd_intern (sigpipe [0]);	1057	#if EV_USE_EVENTFD
697	fd_intern (sigpipe [1]);	1058	if (evfd >= 0)
		1059	{
		1060	uint64_t counter;
		1061	read (evfd, &counter, sizeof (uint64_t));
		1062	}
		1063	else
		1064	#endif
		1065	{
		1066	char dummy;
		1067	read (evpipe [0], &dummy, 1);
		1068	}
698		1069
699	ev_io_set (&sigev, sigpipe [0], EV_READ);	1070	if (gotsig && ev_is_default_loop (EV_A))
700	ev_io_start (EV_A_ &sigev);	1071	{
701	ev_unref (EV_A); /* child watcher should not keep loop alive */	1072	int signum;
		1073	gotsig = 0;
		1074
		1075	for (signum = signalmax; signum--; )
		1076	if (signals [signum].gotsig)
		1077	ev_feed_signal_event (EV_A_ signum + 1);
		1078	}
		1079
		1080	#if EV_ASYNC_ENABLE
		1081	if (gotasync)
		1082	{
		1083	int i;
		1084	gotasync = 0;
		1085
		1086	for (i = asynccnt; i--; )
		1087	if (asyncs [i]->sent)
		1088	{
		1089	asyncs [i]->sent = 0;
		1090	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		1091	}
		1092	}
		1093	#endif
702	}	1094	}
703		1095
704	/*****************************************************************************/	1096	/*****************************************************************************/
705		1097
706	static struct ev_child *childs [PID_HASHSIZE];	1098	static void
		1099	ev_sighandler (int signum)
		1100	{
		1101	#if EV_MULTIPLICITY
		1102	struct ev_loop *loop = &default_loop_struct;
		1103	#endif
		1104
		1105	#if _WIN32
		1106	signal (signum, ev_sighandler);
		1107	#endif
		1108
		1109	signals [signum - 1].gotsig = 1;
		1110	evpipe_write (EV_A_ &gotsig);
		1111	}
		1112
		1113	void noinline
		1114	ev_feed_signal_event (EV_P_ int signum)
		1115	{
		1116	WL w;
		1117
		1118	#if EV_MULTIPLICITY
		1119	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		1120	#endif
		1121
		1122	--signum;
		1123
		1124	if (signum < 0 || signum >= signalmax)
		1125	return;
		1126
		1127	signals [signum].gotsig = 0;
		1128
		1129	for (w = signals [signum].head; w; w = w->next)
		1130	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		1131	}
		1132
		1133	/*****************************************************************************/
		1134
		1135	static WL childs [EV_PID_HASHSIZE];
707		1136
708	#ifndef _WIN32	1137	#ifndef _WIN32
709		1138
710	static struct ev_signal childev;	1139	static ev_signal childev;
		1140
		1141	#ifndef WIFCONTINUED
		1142	# define WIFCONTINUED(status) 0
		1143	#endif
		1144
		1145	void inline_speed
		1146	child_reap (EV_P_ int chain, int pid, int status)
		1147	{
		1148	ev_child *w;
		1149	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
		1150
		1151	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1152	{
		1153	if ((w->pid == pid || !w->pid)
		1154	&& (!traced || (w->flags & 1)))
		1155	{
		1156	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
		1157	w->rpid = pid;
		1158	w->rstatus = status;
		1159	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		1160	}
		1161	}
		1162	}
711		1163
712	#ifndef WCONTINUED	1164	#ifndef WCONTINUED
713	# define WCONTINUED 0	1165	# define WCONTINUED 0
714	#endif	1166	#endif
715		1167
716	static void	1168	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)	1169	childcb (EV_P_ ev_signal *sw, int revents)
733	{	1170	{
734	int pid, status;	1171	int pid, status;
735		1172
		1173	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
736	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	1174	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
737	{	1175	if (!WCONTINUED
		1176	|| errno != EINVAL
		1177	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		1178	return;
		1179
738	/* make sure we are called again until all childs have been reaped */	1180	/* make sure we are called again until all children have been reaped */
739	/* we need to do it this way so that the callback gets called before we continue */	1181	/* 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);	1182	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
741		1183
742	child_reap (EV_A_ sw, pid, pid, status);	1184	child_reap (EV_A_ pid, pid, status);
		1185	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 */	1186	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
744	}
745	}	1187	}
746		1188
747	#endif	1189	#endif
748		1190
749	/*****************************************************************************/	1191	/*****************************************************************************/
…		…
775	{	1217	{
776	return EV_VERSION_MINOR;	1218	return EV_VERSION_MINOR;
777	}	1219	}
778		1220
779	/* return true if we are running with elevated privileges and should ignore env variables */	1221	/* return true if we are running with elevated privileges and should ignore env variables */
780	static int	1222	int inline_size
781	enable_secure (void)	1223	enable_secure (void)
782	{	1224	{
783	#ifdef _WIN32	1225	#ifdef _WIN32
784	return 0;	1226	return 0;
785	#else	1227	#else
…		…
821	}	1263	}
822		1264
823	unsigned int	1265	unsigned int
824	ev_embeddable_backends (void)	1266	ev_embeddable_backends (void)
825	{	1267	{
826	return EVBACKEND_EPOLL	1268	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
827	| EVBACKEND_KQUEUE	1269
828	| EVBACKEND_PORT;	1270	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1271	/* please fix it and tell me how to detect the fix */
		1272	flags &= ~EVBACKEND_EPOLL;
		1273
		1274	return flags;
829	}	1275	}
830		1276
831	unsigned int	1277	unsigned int
832	ev_backend (EV_P)	1278	ev_backend (EV_P)
833	{	1279	{
834	return backend;	1280	return backend;
835	}	1281	}
836		1282
837	static void	1283	unsigned int
		1284	ev_loop_count (EV_P)
		1285	{
		1286	return loop_count;
		1287	}
		1288
		1289	void
		1290	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1291	{
		1292	io_blocktime = interval;
		1293	}
		1294
		1295	void
		1296	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1297	{
		1298	timeout_blocktime = interval;
		1299	}
		1300
		1301	static void noinline
838	loop_init (EV_P_ unsigned int flags)	1302	loop_init (EV_P_ unsigned int flags)
839	{	1303	{
840	if (!backend)	1304	if (!backend)
841	{	1305	{
842	#if EV_USE_MONOTONIC	1306	#if EV_USE_MONOTONIC
…		…
845	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1309	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
846	have_monotonic = 1;	1310	have_monotonic = 1;
847	}	1311	}
848	#endif	1312	#endif
849		1313
850	ev_rt_now = ev_time ();	1314	ev_rt_now = ev_time ();
851	mn_now = get_clock ();	1315	mn_now = get_clock ();
852	now_floor = mn_now;	1316	now_floor = mn_now;
853	rtmn_diff = ev_rt_now - mn_now;	1317	rtmn_diff = ev_rt_now - mn_now;
		1318
		1319	io_blocktime = 0.;
		1320	timeout_blocktime = 0.;
		1321	backend = 0;
		1322	backend_fd = -1;
		1323	gotasync = 0;
		1324	#if EV_USE_INOTIFY
		1325	fs_fd = -2;
		1326	#endif
		1327
		1328	/* pid check not overridable via env */
		1329	#ifndef _WIN32
		1330	if (flags & EVFLAG_FORKCHECK)
		1331	curpid = getpid ();
		1332	#endif
854		1333
855	if (!(flags & EVFLAG_NOENV)	1334	if (!(flags & EVFLAG_NOENV)
856	&& !enable_secure ()	1335	&& !enable_secure ()
857	&& getenv ("LIBEV_FLAGS"))	1336	&& getenv ("LIBEV_FLAGS"))
858	flags = atoi (getenv ("LIBEV_FLAGS"));	1337	flags = atoi (getenv ("LIBEV_FLAGS"));
859		1338
860	if (!(flags & 0x0000ffffUL))	1339	if (!(flags & 0x0000ffffU))
861	flags |= ev_recommended_backends ();	1340	flags |= ev_recommended_backends ();
862		1341
863	backend = 0;
864	#if EV_USE_PORT	1342	#if EV_USE_PORT
865	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1343	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
866	#endif	1344	#endif
867	#if EV_USE_KQUEUE	1345	#if EV_USE_KQUEUE
868	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1346	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
875	#endif	1353	#endif
876	#if EV_USE_SELECT	1354	#if EV_USE_SELECT
877	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1355	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
878	#endif	1356	#endif
879		1357
880	ev_init (&sigev, sigcb);	1358	ev_init (&pipeev, pipecb);
881	ev_set_priority (&sigev, EV_MAXPRI);	1359	ev_set_priority (&pipeev, EV_MAXPRI);
882	}	1360	}
883	}	1361	}
884		1362
885	static void	1363	static void noinline
886	loop_destroy (EV_P)	1364	loop_destroy (EV_P)
887	{	1365	{
888	int i;	1366	int i;
		1367
		1368	if (ev_is_active (&pipeev))
		1369	{
		1370	ev_ref (EV_A); /* signal watcher */
		1371	ev_io_stop (EV_A_ &pipeev);
		1372
		1373	#if EV_USE_EVENTFD
		1374	if (evfd >= 0)
		1375	close (evfd);
		1376	#endif
		1377
		1378	if (evpipe [0] >= 0)
		1379	{
		1380	close (evpipe [0]);
		1381	close (evpipe [1]);
		1382	}
		1383	}
		1384
		1385	#if EV_USE_INOTIFY
		1386	if (fs_fd >= 0)
		1387	close (fs_fd);
		1388	#endif
		1389
		1390	if (backend_fd >= 0)
		1391	close (backend_fd);
889		1392
890	#if EV_USE_PORT	1393	#if EV_USE_PORT
891	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1394	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
892	#endif	1395	#endif
893	#if EV_USE_KQUEUE	1396	#if EV_USE_KQUEUE
…		…
902	#if EV_USE_SELECT	1405	#if EV_USE_SELECT
903	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1406	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
904	#endif	1407	#endif
905		1408
906	for (i = NUMPRI; i--; )	1409	for (i = NUMPRI; i--; )
		1410	{
907	array_free (pending, [i]);	1411	array_free (pending, [i]);
		1412	#if EV_IDLE_ENABLE
		1413	array_free (idle, [i]);
		1414	#endif
		1415	}
		1416
		1417	ev_free (anfds); anfdmax = 0;
908		1418
909	/* have to use the microsoft-never-gets-it-right macro */	1419	/* have to use the microsoft-never-gets-it-right macro */
910	array_free (fdchange, EMPTY0);	1420	array_free (fdchange, EMPTY);
911	array_free (timer, EMPTY0);	1421	array_free (timer, EMPTY);
912	#if EV_PERIODICS	1422	#if EV_PERIODIC_ENABLE
913	array_free (periodic, EMPTY0);	1423	array_free (periodic, EMPTY);
914	#endif	1424	#endif
		1425	#if EV_FORK_ENABLE
915	array_free (idle, EMPTY0);	1426	array_free (fork, EMPTY);
		1427	#endif
916	array_free (prepare, EMPTY0);	1428	array_free (prepare, EMPTY);
917	array_free (check, EMPTY0);	1429	array_free (check, EMPTY);
		1430	#if EV_ASYNC_ENABLE
		1431	array_free (async, EMPTY);
		1432	#endif
918		1433
919	backend = 0;	1434	backend = 0;
920	}	1435	}
921		1436
922	static void	1437	#if EV_USE_INOTIFY
		1438	void inline_size infy_fork (EV_P);
		1439	#endif
		1440
		1441	void inline_size
923	loop_fork (EV_P)	1442	loop_fork (EV_P)
924	{	1443	{
925	#if EV_USE_PORT	1444	#if EV_USE_PORT
926	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1445	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
927	#endif	1446	#endif
…		…
929	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1448	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
930	#endif	1449	#endif
931	#if EV_USE_EPOLL	1450	#if EV_USE_EPOLL
932	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1451	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
933	#endif	1452	#endif
		1453	#if EV_USE_INOTIFY
		1454	infy_fork (EV_A);
		1455	#endif
934		1456
935	if (ev_is_active (&sigev))	1457	if (ev_is_active (&pipeev))
936	{	1458	{
937	/* default loop */	1459	/* this "locks" the handlers against writing to the pipe */
		1460	/* while we modify the fd vars */
		1461	gotsig = 1;
		1462	#if EV_ASYNC_ENABLE
		1463	gotasync = 1;
		1464	#endif
938		1465
939	ev_ref (EV_A);	1466	ev_ref (EV_A);
940	ev_io_stop (EV_A_ &sigev);	1467	ev_io_stop (EV_A_ &pipeev);
		1468
		1469	#if EV_USE_EVENTFD
		1470	if (evfd >= 0)
		1471	close (evfd);
		1472	#endif
		1473
		1474	if (evpipe [0] >= 0)
		1475	{
941	close (sigpipe [0]);	1476	close (evpipe [0]);
942	close (sigpipe [1]);	1477	close (evpipe [1]);
		1478	}
943		1479
944	while (pipe (sigpipe))
945	syserr ("(libev) error creating pipe");
946
947	siginit (EV_A);	1480	evpipe_init (EV_A);
		1481	/* now iterate over everything, in case we missed something */
		1482	pipecb (EV_A_ &pipeev, EV_READ);
948	}	1483	}
949		1484
950	postfork = 0;	1485	postfork = 0;
951	}	1486	}
952		1487
…		…
974	}	1509	}
975		1510
976	void	1511	void
977	ev_loop_fork (EV_P)	1512	ev_loop_fork (EV_P)
978	{	1513	{
979	postfork = 1;	1514	postfork = 1; /* must be in line with ev_default_fork */
980	}	1515	}
		1516
		1517	#if EV_VERIFY
		1518	static void
		1519	array_check (W **ws, int cnt)
		1520	{
		1521	while (cnt--)
		1522	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1523	}
		1524
		1525	static void
		1526	ev_loop_verify (EV_P)
		1527	{
		1528	int i;
		1529
		1530	checkheap (timers, timercnt);
		1531	#if EV_PERIODIC_ENABLE
		1532	checkheap (periodics, periodiccnt);
		1533	#endif
		1534
		1535	#if EV_IDLE_ENABLE
		1536	for (i = NUMPRI; i--; )
		1537	array_check ((W **)idles [i], idlecnt [i]);
		1538	#endif
		1539	#if EV_FORK_ENABLE
		1540	array_check ((W **)forks, forkcnt);
		1541	#endif
		1542	array_check ((W **)prepares, preparecnt);
		1543	array_check ((W **)checks, checkcnt);
		1544	#if EV_ASYNC_ENABLE
		1545	array_check ((W **)asyncs, asynccnt);
		1546	#endif
		1547	}
		1548	#endif
981		1549
982	#endif	1550	#endif
983		1551
984	#if EV_MULTIPLICITY	1552	#if EV_MULTIPLICITY
985	struct ev_loop *	1553	struct ev_loop *
…		…
987	#else	1555	#else
988	int	1556	int
989	ev_default_loop (unsigned int flags)	1557	ev_default_loop (unsigned int flags)
990	#endif	1558	#endif
991	{	1559	{
992	if (sigpipe [0] == sigpipe [1])
993	if (pipe (sigpipe))
994	return 0;
995
996	if (!ev_default_loop_ptr)	1560	if (!ev_default_loop_ptr)
997	{	1561	{
998	#if EV_MULTIPLICITY	1562	#if EV_MULTIPLICITY
999	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1563	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1000	#else	1564	#else
…		…
1003		1567
1004	loop_init (EV_A_ flags);	1568	loop_init (EV_A_ flags);
1005		1569
1006	if (ev_backend (EV_A))	1570	if (ev_backend (EV_A))
1007	{	1571	{
1008	siginit (EV_A);
1009
1010	#ifndef _WIN32	1572	#ifndef _WIN32
1011	ev_signal_init (&childev, childcb, SIGCHLD);	1573	ev_signal_init (&childev, childcb, SIGCHLD);
1012	ev_set_priority (&childev, EV_MAXPRI);	1574	ev_set_priority (&childev, EV_MAXPRI);
1013	ev_signal_start (EV_A_ &childev);	1575	ev_signal_start (EV_A_ &childev);
1014	ev_unref (EV_A); /* child watcher should not keep loop alive */	1576	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1031	#ifndef _WIN32	1593	#ifndef _WIN32
1032	ev_ref (EV_A); /* child watcher */	1594	ev_ref (EV_A); /* child watcher */
1033	ev_signal_stop (EV_A_ &childev);	1595	ev_signal_stop (EV_A_ &childev);
1034	#endif	1596	#endif
1035		1597
1036	ev_ref (EV_A); /* signal watcher */
1037	ev_io_stop (EV_A_ &sigev);
1038
1039	close (sigpipe [0]); sigpipe [0] = 0;
1040	close (sigpipe [1]); sigpipe [1] = 0;
1041
1042	loop_destroy (EV_A);	1598	loop_destroy (EV_A);
1043	}	1599	}
1044		1600
1045	void	1601	void
1046	ev_default_fork (void)	1602	ev_default_fork (void)
…		…
1048	#if EV_MULTIPLICITY	1604	#if EV_MULTIPLICITY
1049	struct ev_loop *loop = ev_default_loop_ptr;	1605	struct ev_loop *loop = ev_default_loop_ptr;
1050	#endif	1606	#endif
1051		1607
1052	if (backend)	1608	if (backend)
1053	postfork = 1;	1609	postfork = 1; /* must be in line with ev_loop_fork */
1054	}	1610	}
1055		1611
1056	/*****************************************************************************/	1612	/*****************************************************************************/
1057		1613
1058	static int	1614	void
		1615	ev_invoke (EV_P_ void *w, int revents)
		1616	{
		1617	EV_CB_INVOKE ((W)w, revents);
		1618	}
		1619
		1620	void inline_speed
1059	any_pending (EV_P)	1621	call_pending (EV_P)
1060	{	1622	{
1061	int pri;	1623	int pri;
1062		1624
1063	for (pri = NUMPRI; pri--; )	1625	EV_FREQUENT_CHECK;
1064	if (pendingcnt [pri])
1065	return 1;
1066
1067	return 0;
1068	}
1069
1070	inline void
1071	call_pending (EV_P)
1072	{
1073	int pri;
1074		1626
1075	for (pri = NUMPRI; pri--; )	1627	for (pri = NUMPRI; pri--; )
1076	while (pendingcnt [pri])	1628	while (pendingcnt [pri])
1077	{	1629	{
1078	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1630	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1079		1631
1080	if (expect_true (p->w))	1632	if (expect_true (p->w))
1081	{	1633	{
		1634	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1635
1082	p->w->pending = 0;	1636	p->w->pending = 0;
1083	EV_CB_INVOKE (p->w, p->events);	1637	EV_CB_INVOKE (p->w, p->events);
1084	}	1638	}
1085	}	1639	}
1086	}
1087		1640
1088	inline void	1641	EV_FREQUENT_CHECK;
		1642	}
		1643
		1644	#if EV_IDLE_ENABLE
		1645	void inline_size
		1646	idle_reify (EV_P)
		1647	{
		1648	if (expect_false (idleall))
		1649	{
		1650	int pri;
		1651
		1652	for (pri = NUMPRI; pri--; )
		1653	{
		1654	if (pendingcnt [pri])
		1655	break;
		1656
		1657	if (idlecnt [pri])
		1658	{
		1659	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1660	break;
		1661	}
		1662	}
		1663	}
		1664	}
		1665	#endif
		1666
		1667	void inline_size
1089	timers_reify (EV_P)	1668	timers_reify (EV_P)
1090	{	1669	{
		1670	EV_FREQUENT_CHECK;
		1671
1091	while (timercnt && ((WT)timers [0])->at <= mn_now)	1672	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1092	{	1673	{
1093	struct ev_timer *w = timers [0];	1674	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1094		1675
1095	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1676	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1096		1677
1097	/* first reschedule or stop timer */	1678	/* first reschedule or stop timer */
1098	if (w->repeat)	1679	if (w->repeat)
1099	{	1680	{
		1681	ev_at (w) += w->repeat;
		1682	if (ev_at (w) < mn_now)
		1683	ev_at (w) = mn_now;
		1684
1100	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1685	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1101		1686
1102	((WT)w)->at += w->repeat;	1687	ANHE_at_cache (timers [HEAP0]);
1103	if (((WT)w)->at < mn_now)
1104	((WT)w)->at = mn_now;
1105
1106	downheap ((WT *)timers, timercnt, 0);	1688	downheap (timers, timercnt, HEAP0);
1107	}	1689	}
1108	else	1690	else
1109	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1691	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1110		1692
		1693	EV_FREQUENT_CHECK;
1111	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1694	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1112	}	1695	}
1113	}	1696	}
1114		1697
1115	#if EV_PERIODICS	1698	#if EV_PERIODIC_ENABLE
1116	inline void	1699	void inline_size
1117	periodics_reify (EV_P)	1700	periodics_reify (EV_P)
1118	{	1701	{
		1702	EV_FREQUENT_CHECK;
1119	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1703	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1120	{	1704	{
1121	struct ev_periodic *w = periodics [0];	1705	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1122		1706
1123	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1707	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1124		1708
1125	/* first reschedule or stop timer */	1709	/* first reschedule or stop timer */
1126	if (w->reschedule_cb)	1710	if (w->reschedule_cb)
1127	{	1711	{
1128	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1712	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1713
1129	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1714	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		1715
		1716	ANHE_at_cache (periodics [HEAP0]);
1130	downheap ((WT *)periodics, periodiccnt, 0);	1717	downheap (periodics, periodiccnt, HEAP0);
		1718	EV_FREQUENT_CHECK;
1131	}	1719	}
1132	else if (w->interval)	1720	else if (w->interval)
1133	{	1721	{
1134	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1722	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1135	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1723	/* if next trigger time is not sufficiently in the future, put it there */
		1724	/* this might happen because of floating point inexactness */
		1725	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1726	{
		1727	ev_at (w) += w->interval;
		1728
		1729	/* if interval is unreasonably low we might still have a time in the past */
		1730	/* so correct this. this will make the periodic very inexact, but the user */
		1731	/* has effectively asked to get triggered more often than possible */
		1732	if (ev_at (w) < ev_rt_now)
		1733	ev_at (w) = ev_rt_now;
		1734	}
		1735
		1736	ANHE_at_cache (periodics [HEAP0]);
1136	downheap ((WT *)periodics, periodiccnt, 0);	1737	downheap (periodics, periodiccnt, HEAP0);
1137	}	1738	}
1138	else	1739	else
1139	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1740	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1140		1741
		1742	EV_FREQUENT_CHECK;
1141	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1743	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1142	}	1744	}
1143	}	1745	}
1144		1746
1145	static void	1747	static void noinline
1146	periodics_reschedule (EV_P)	1748	periodics_reschedule (EV_P)
1147	{	1749	{
1148	int i;	1750	int i;
1149		1751
1150	/* adjust periodics after time jump */	1752	/* adjust periodics after time jump */
1151	for (i = 0; i < periodiccnt; ++i)	1753	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1152	{	1754	{
1153	struct ev_periodic *w = periodics [i];	1755	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1154		1756
1155	if (w->reschedule_cb)	1757	if (w->reschedule_cb)
1156	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1758	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1157	else if (w->interval)	1759	else if (w->interval)
1158	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1760	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1761
		1762	ANHE_at_cache (periodics [i]);
		1763	}
		1764
		1765	reheap (periodics, periodiccnt);
		1766	}
		1767	#endif
		1768
		1769	void inline_speed
		1770	time_update (EV_P_ ev_tstamp max_block)
		1771	{
		1772	int i;
		1773
		1774	#if EV_USE_MONOTONIC
		1775	if (expect_true (have_monotonic))
1159	}	1776	{
		1777	ev_tstamp odiff = rtmn_diff;
1160		1778
1161	/* now rebuild the heap */
1162	for (i = periodiccnt >> 1; i--; )
1163	downheap ((WT *)periodics, periodiccnt, i);
1164	}
1165	#endif
1166
1167	inline int
1168	time_update_monotonic (EV_P)
1169	{
1170	mn_now = get_clock ();	1779	mn_now = get_clock ();
1171		1780
		1781	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1782	/* interpolate in the meantime */
1172	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1783	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1173	{	1784	{
1174	ev_rt_now = rtmn_diff + mn_now;	1785	ev_rt_now = rtmn_diff + mn_now;
1175	return 0;	1786	return;
1176	}	1787	}
1177	else	1788
1178	{
1179	now_floor = mn_now;	1789	now_floor = mn_now;
1180	ev_rt_now = ev_time ();	1790	ev_rt_now = ev_time ();
1181	return 1;
1182	}
1183	}
1184		1791
1185	inline void	1792	/* loop a few times, before making important decisions.
1186	time_update (EV_P)	1793	* on the choice of "4": one iteration isn't enough,
1187	{	1794	* in case we get preempted during the calls to
1188	int i;	1795	* ev_time and get_clock. a second call is almost guaranteed
1189		1796	* to succeed in that case, though. and looping a few more times
1190	#if EV_USE_MONOTONIC	1797	* doesn't hurt either as we only do this on time-jumps or
1191	if (expect_true (have_monotonic))	1798	* in the unlikely event of having been preempted here.
1192	{	1799	*/
1193	if (time_update_monotonic (EV_A))	1800	for (i = 4; --i; )
1194	{	1801	{
1195	ev_tstamp odiff = rtmn_diff;	1802	rtmn_diff = ev_rt_now - mn_now;
1196		1803
1197	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1804	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
		1805	return; /* all is well */
		1806
		1807	ev_rt_now = ev_time ();
		1808	mn_now = get_clock ();
		1809	now_floor = mn_now;
		1810	}
		1811
		1812	# if EV_PERIODIC_ENABLE
		1813	periodics_reschedule (EV_A);
		1814	# endif
		1815	/* no timer adjustment, as the monotonic clock doesn't jump */
		1816	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1817	}
		1818	else
		1819	#endif
		1820	{
		1821	ev_rt_now = ev_time ();
		1822
		1823	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1824	{
		1825	#if EV_PERIODIC_ENABLE
		1826	periodics_reschedule (EV_A);
		1827	#endif
		1828	/* adjust timers. this is easy, as the offset is the same for all of them */
		1829	for (i = 0; i < timercnt; ++i)
1198	{	1830	{
1199	rtmn_diff = ev_rt_now - mn_now;	1831	ANHE *he = timers + i + HEAP0;
1200		1832	ANHE_w (*he)->at += ev_rt_now - mn_now;
1201	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1833	ANHE_at_cache (*he);
1202	return; /* all is well */
1203
1204	ev_rt_now = ev_time ();
1205	mn_now = get_clock ();
1206	now_floor = mn_now;
1207	}	1834	}
1208
1209	# if EV_PERIODICS
1210	periodics_reschedule (EV_A);
1211	# endif
1212	/* no timer adjustment, as the monotonic clock doesn't jump */
1213	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1214	}	1835	}
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 */
1228	for (i = 0; i < timercnt; ++i)
1229	((WT)timers [i])->at += ev_rt_now - mn_now;
1230	}
1231		1836
1232	mn_now = ev_rt_now;	1837	mn_now = ev_rt_now;
1233	}	1838	}
1234	}	1839	}
1235		1840
…		…
1248	static int loop_done;	1853	static int loop_done;
1249		1854
1250	void	1855	void
1251	ev_loop (EV_P_ int flags)	1856	ev_loop (EV_P_ int flags)
1252	{	1857	{
1253	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1858	loop_done = EVUNLOOP_CANCEL;
1254	? EVUNLOOP_ONE
1255	: EVUNLOOP_CANCEL;
1256		1859
1257	while (activecnt)	1860	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1861
		1862	do
1258	{	1863	{
		1864	#ifndef _WIN32
		1865	if (expect_false (curpid)) /* penalise the forking check even more */
		1866	if (expect_false (getpid () != curpid))
		1867	{
		1868	curpid = getpid ();
		1869	postfork = 1;
		1870	}
		1871	#endif
		1872
		1873	#if EV_FORK_ENABLE
		1874	/* we might have forked, so queue fork handlers */
		1875	if (expect_false (postfork))
		1876	if (forkcnt)
		1877	{
		1878	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1879	call_pending (EV_A);
		1880	}
		1881	#endif
		1882
1259	/* queue check watchers (and execute them) */	1883	/* queue prepare watchers (and execute them) */
1260	if (expect_false (preparecnt))	1884	if (expect_false (preparecnt))
1261	{	1885	{
1262	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1886	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1263	call_pending (EV_A);	1887	call_pending (EV_A);
1264	}	1888	}
1265		1889
		1890	if (expect_false (!activecnt))
		1891	break;
		1892
1266	/* we might have forked, so reify kernel state if necessary */	1893	/* we might have forked, so reify kernel state if necessary */
1267	if (expect_false (postfork))	1894	if (expect_false (postfork))
1268	loop_fork (EV_A);	1895	loop_fork (EV_A);
1269		1896
1270	/* update fd-related kernel structures */	1897	/* update fd-related kernel structures */
1271	fd_reify (EV_A);	1898	fd_reify (EV_A);
1272		1899
1273	/* calculate blocking time */	1900	/* calculate blocking time */
1274	{	1901	{
1275	double block;	1902	ev_tstamp waittime = 0.;
		1903	ev_tstamp sleeptime = 0.;
1276		1904
1277	if (flags & EVLOOP_NONBLOCK || idlecnt)	1905	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1278	block = 0.; /* do not block at all */
1279	else
1280	{	1906	{
1281	/* update time to cancel out callback processing overhead */	1907	/* 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);	1908	time_update (EV_A_ 1e100);
1285	else
1286	#endif
1287	{
1288	ev_rt_now = ev_time ();
1289	mn_now = ev_rt_now;
1290	}
1291		1909
1292	block = MAX_BLOCKTIME;	1910	waittime = MAX_BLOCKTIME;
1293		1911
1294	if (timercnt)	1912	if (timercnt)
1295	{	1913	{
1296	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1914	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1297	if (block > to) block = to;	1915	if (waittime > to) waittime = to;
1298	}	1916	}
1299		1917
1300	#if EV_PERIODICS	1918	#if EV_PERIODIC_ENABLE
1301	if (periodiccnt)	1919	if (periodiccnt)
1302	{	1920	{
1303	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1921	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1304	if (block > to) block = to;	1922	if (waittime > to) waittime = to;
1305	}	1923	}
1306	#endif	1924	#endif
1307		1925
1308	if (expect_false (block < 0.)) block = 0.;	1926	if (expect_false (waittime < timeout_blocktime))
		1927	waittime = timeout_blocktime;
		1928
		1929	sleeptime = waittime - backend_fudge;
		1930
		1931	if (expect_true (sleeptime > io_blocktime))
		1932	sleeptime = io_blocktime;
		1933
		1934	if (sleeptime)
		1935	{
		1936	ev_sleep (sleeptime);
		1937	waittime -= sleeptime;
		1938	}
1309	}	1939	}
1310		1940
		1941	++loop_count;
1311	backend_poll (EV_A_ block);	1942	backend_poll (EV_A_ waittime);
		1943
		1944	/* update ev_rt_now, do magic */
		1945	time_update (EV_A_ waittime + sleeptime);
1312	}	1946	}
1313
1314	/* update ev_rt_now, do magic */
1315	time_update (EV_A);
1316		1947
1317	/* queue pending timers and reschedule them */	1948	/* queue pending timers and reschedule them */
1318	timers_reify (EV_A); /* relative timers called last */	1949	timers_reify (EV_A); /* relative timers called last */
1319	#if EV_PERIODICS	1950	#if EV_PERIODIC_ENABLE
1320	periodics_reify (EV_A); /* absolute timers called first */	1951	periodics_reify (EV_A); /* absolute timers called first */
1321	#endif	1952	#endif
1322		1953
		1954	#if EV_IDLE_ENABLE
1323	/* queue idle watchers unless io or timers are pending */	1955	/* queue idle watchers unless other events are pending */
1324	if (idlecnt && !any_pending (EV_A))	1956	idle_reify (EV_A);
1325	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1957	#endif
1326		1958
1327	/* queue check watchers, to be executed first */	1959	/* queue check watchers, to be executed first */
1328	if (expect_false (checkcnt))	1960	if (expect_false (checkcnt))
1329	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1961	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1330		1962
1331	call_pending (EV_A);	1963	call_pending (EV_A);
1332
1333	if (expect_false (loop_done))
1334	break;
1335	}	1964	}
		1965	while (expect_true (
		1966	activecnt
		1967	&& !loop_done
		1968	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		1969	));
1336		1970
1337	if (loop_done == EVUNLOOP_ONE)	1971	if (loop_done == EVUNLOOP_ONE)
1338	loop_done = EVUNLOOP_CANCEL;	1972	loop_done = EVUNLOOP_CANCEL;
1339	}	1973	}
1340		1974
…		…
1344	loop_done = how;	1978	loop_done = how;
1345	}	1979	}
1346		1980
1347	/*****************************************************************************/	1981	/*****************************************************************************/
1348		1982
1349	inline void	1983	void inline_size
1350	wlist_add (WL *head, WL elem)	1984	wlist_add (WL *head, WL elem)
1351	{	1985	{
1352	elem->next = *head;	1986	elem->next = *head;
1353	*head = elem;	1987	*head = elem;
1354	}	1988	}
1355		1989
1356	inline void	1990	void inline_size
1357	wlist_del (WL *head, WL elem)	1991	wlist_del (WL *head, WL elem)
1358	{	1992	{
1359	while (*head)	1993	while (*head)
1360	{	1994	{
1361	if (*head == elem)	1995	if (*head == elem)
…		…
1366		2000
1367	head = &(*head)->next;	2001	head = &(*head)->next;
1368	}	2002	}
1369	}	2003	}
1370		2004
1371	inline void	2005	void inline_speed
1372	ev_clear_pending (EV_P_ W w)	2006	clear_pending (EV_P_ W w)
1373	{	2007	{
1374	if (w->pending)	2008	if (w->pending)
1375	{	2009	{
1376	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2010	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1377	w->pending = 0;	2011	w->pending = 0;
1378	}	2012	}
1379	}	2013	}
1380		2014
1381	inline void	2015	int
		2016	ev_clear_pending (EV_P_ void *w)
		2017	{
		2018	W w_ = (W)w;
		2019	int pending = w_->pending;
		2020
		2021	if (expect_true (pending))
		2022	{
		2023	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2024	w_->pending = 0;
		2025	p->w = 0;
		2026	return p->events;
		2027	}
		2028	else
		2029	return 0;
		2030	}
		2031
		2032	void inline_size
		2033	pri_adjust (EV_P_ W w)
		2034	{
		2035	int pri = w->priority;
		2036	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		2037	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		2038	w->priority = pri;
		2039	}
		2040
		2041	void inline_speed
1382	ev_start (EV_P_ W w, int active)	2042	ev_start (EV_P_ W w, int active)
1383	{	2043	{
1384	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	2044	pri_adjust (EV_A_ w);
1385	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1386
1387	w->active = active;	2045	w->active = active;
1388	ev_ref (EV_A);	2046	ev_ref (EV_A);
1389	}	2047	}
1390		2048
1391	inline void	2049	void inline_size
1392	ev_stop (EV_P_ W w)	2050	ev_stop (EV_P_ W w)
1393	{	2051	{
1394	ev_unref (EV_A);	2052	ev_unref (EV_A);
1395	w->active = 0;	2053	w->active = 0;
1396	}	2054	}
1397		2055
1398	/*****************************************************************************/	2056	/*****************************************************************************/
1399		2057
1400	void	2058	void noinline
1401	ev_io_start (EV_P_ struct ev_io *w)	2059	ev_io_start (EV_P_ ev_io *w)
1402	{	2060	{
1403	int fd = w->fd;	2061	int fd = w->fd;
1404		2062
1405	if (expect_false (ev_is_active (w)))	2063	if (expect_false (ev_is_active (w)))
1406	return;	2064	return;
1407		2065
1408	assert (("ev_io_start called with negative fd", fd >= 0));	2066	assert (("ev_io_start called with negative fd", fd >= 0));
1409		2067
		2068	EV_FREQUENT_CHECK;
		2069
1410	ev_start (EV_A_ (W)w, 1);	2070	ev_start (EV_A_ (W)w, 1);
1411	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2071	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1412	wlist_add ((WL *)&anfds[fd].head, (WL)w);	2072	wlist_add (&anfds[fd].head, (WL)w);
1413		2073
1414	fd_change (EV_A_ fd);	2074	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1415	}	2075	w->events &= ~EV_IOFDSET;
1416		2076
1417	void	2077	EV_FREQUENT_CHECK;
		2078	}
		2079
		2080	void noinline
1418	ev_io_stop (EV_P_ struct ev_io *w)	2081	ev_io_stop (EV_P_ ev_io *w)
1419	{	2082	{
1420	ev_clear_pending (EV_A_ (W)w);	2083	clear_pending (EV_A_ (W)w);
1421	if (expect_false (!ev_is_active (w)))	2084	if (expect_false (!ev_is_active (w)))
1422	return;	2085	return;
1423		2086
1424	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2087	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1425		2088
		2089	EV_FREQUENT_CHECK;
		2090
1426	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	2091	wlist_del (&anfds[w->fd].head, (WL)w);
1427	ev_stop (EV_A_ (W)w);	2092	ev_stop (EV_A_ (W)w);
1428		2093
1429	fd_change (EV_A_ w->fd);	2094	fd_change (EV_A_ w->fd, 1);
1430	}
1431		2095
1432	void	2096	EV_FREQUENT_CHECK;
		2097	}
		2098
		2099	void noinline
1433	ev_timer_start (EV_P_ struct ev_timer *w)	2100	ev_timer_start (EV_P_ ev_timer *w)
1434	{	2101	{
1435	if (expect_false (ev_is_active (w)))	2102	if (expect_false (ev_is_active (w)))
1436	return;	2103	return;
1437		2104
1438	((WT)w)->at += mn_now;	2105	ev_at (w) += mn_now;
1439		2106
1440	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2107	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1441		2108
		2109	EV_FREQUENT_CHECK;
		2110
		2111	++timercnt;
1442	ev_start (EV_A_ (W)w, ++timercnt);	2112	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1443	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);	2113	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1444	timers [timercnt - 1] = w;	2114	ANHE_w (timers [ev_active (w)]) = (WT)w;
1445	upheap ((WT *)timers, timercnt - 1);	2115	ANHE_at_cache (timers [ev_active (w)]);
		2116	upheap (timers, ev_active (w));
1446		2117
		2118	EV_FREQUENT_CHECK;
		2119
1447	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	2120	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1448	}	2121	}
1449		2122
1450	void	2123	void noinline
1451	ev_timer_stop (EV_P_ struct ev_timer *w)	2124	ev_timer_stop (EV_P_ ev_timer *w)
1452	{	2125	{
1453	ev_clear_pending (EV_A_ (W)w);	2126	clear_pending (EV_A_ (W)w);
1454	if (expect_false (!ev_is_active (w)))	2127	if (expect_false (!ev_is_active (w)))
1455	return;	2128	return;
1456		2129
		2130	EV_FREQUENT_CHECK;
		2131
		2132	{
		2133	int active = ev_active (w);
		2134
1457	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	2135	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1458		2136
		2137	--timercnt;
		2138
1459	if (expect_true (((W)w)->active < timercnt--))	2139	if (expect_true (active < timercnt + HEAP0))
1460	{	2140	{
1461	timers [((W)w)->active - 1] = timers [timercnt];	2141	timers [active] = timers [timercnt + HEAP0];
1462	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	2142	adjustheap (timers, timercnt, active);
1463	}	2143	}
		2144	}
1464		2145
1465	((WT)w)->at -= mn_now;	2146	EV_FREQUENT_CHECK;
		2147
		2148	ev_at (w) -= mn_now;
1466		2149
1467	ev_stop (EV_A_ (W)w);	2150	ev_stop (EV_A_ (W)w);
1468	}	2151	}
1469		2152
1470	void	2153	void noinline
1471	ev_timer_again (EV_P_ struct ev_timer *w)	2154	ev_timer_again (EV_P_ ev_timer *w)
1472	{	2155	{
		2156	EV_FREQUENT_CHECK;
		2157
1473	if (ev_is_active (w))	2158	if (ev_is_active (w))
1474	{	2159	{
1475	if (w->repeat)	2160	if (w->repeat)
1476	{	2161	{
1477	((WT)w)->at = mn_now + w->repeat;	2162	ev_at (w) = mn_now + w->repeat;
		2163	ANHE_at_cache (timers [ev_active (w)]);
1478	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	2164	adjustheap (timers, timercnt, ev_active (w));
1479	}	2165	}
1480	else	2166	else
1481	ev_timer_stop (EV_A_ w);	2167	ev_timer_stop (EV_A_ w);
1482	}	2168	}
1483	else if (w->repeat)	2169	else if (w->repeat)
1484	{	2170	{
1485	w->at = w->repeat;	2171	ev_at (w) = w->repeat;
1486	ev_timer_start (EV_A_ w);	2172	ev_timer_start (EV_A_ w);
1487	}	2173	}
1488	}
1489		2174
		2175	EV_FREQUENT_CHECK;
		2176	}
		2177
1490	#if EV_PERIODICS	2178	#if EV_PERIODIC_ENABLE
1491	void	2179	void noinline
1492	ev_periodic_start (EV_P_ struct ev_periodic *w)	2180	ev_periodic_start (EV_P_ ev_periodic *w)
1493	{	2181	{
1494	if (expect_false (ev_is_active (w)))	2182	if (expect_false (ev_is_active (w)))
1495	return;	2183	return;
1496		2184
1497	if (w->reschedule_cb)	2185	if (w->reschedule_cb)
1498	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2186	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1499	else if (w->interval)	2187	else if (w->interval)
1500	{	2188	{
1501	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2189	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 */	2190	/* 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;	2191	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1504	}	2192	}
		2193	else
		2194	ev_at (w) = w->offset;
1505		2195
		2196	EV_FREQUENT_CHECK;
		2197
		2198	++periodiccnt;
1506	ev_start (EV_A_ (W)w, ++periodiccnt);	2199	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1507	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	2200	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1508	periodics [periodiccnt - 1] = w;	2201	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1509	upheap ((WT *)periodics, periodiccnt - 1);	2202	ANHE_at_cache (periodics [ev_active (w)]);
		2203	upheap (periodics, ev_active (w));
1510		2204
		2205	EV_FREQUENT_CHECK;
		2206
1511	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	2207	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1512	}	2208	}
1513		2209
1514	void	2210	void noinline
1515	ev_periodic_stop (EV_P_ struct ev_periodic *w)	2211	ev_periodic_stop (EV_P_ ev_periodic *w)
1516	{	2212	{
1517	ev_clear_pending (EV_A_ (W)w);	2213	clear_pending (EV_A_ (W)w);
1518	if (expect_false (!ev_is_active (w)))	2214	if (expect_false (!ev_is_active (w)))
1519	return;	2215	return;
1520		2216
		2217	EV_FREQUENT_CHECK;
		2218
		2219	{
		2220	int active = ev_active (w);
		2221
1521	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	2222	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1522		2223
		2224	--periodiccnt;
		2225
1523	if (expect_true (((W)w)->active < periodiccnt--))	2226	if (expect_true (active < periodiccnt + HEAP0))
1524	{	2227	{
1525	periodics [((W)w)->active - 1] = periodics [periodiccnt];	2228	periodics [active] = periodics [periodiccnt + HEAP0];
1526	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	2229	adjustheap (periodics, periodiccnt, active);
1527	}	2230	}
		2231	}
		2232
		2233	EV_FREQUENT_CHECK;
1528		2234
1529	ev_stop (EV_A_ (W)w);	2235	ev_stop (EV_A_ (W)w);
1530	}	2236	}
1531		2237
1532	void	2238	void noinline
1533	ev_periodic_again (EV_P_ struct ev_periodic *w)	2239	ev_periodic_again (EV_P_ ev_periodic *w)
1534	{	2240	{
1535	/* TODO: use adjustheap and recalculation */	2241	/* TODO: use adjustheap and recalculation */
1536	ev_periodic_stop (EV_A_ w);	2242	ev_periodic_stop (EV_A_ w);
1537	ev_periodic_start (EV_A_ w);	2243	ev_periodic_start (EV_A_ w);
1538	}	2244	}
1539	#endif	2245	#endif
1540		2246
1541	void	2247	#ifndef SA_RESTART
1542	ev_idle_start (EV_P_ struct ev_idle *w)	2248	# define SA_RESTART 0
		2249	#endif
		2250
		2251	void noinline
		2252	ev_signal_start (EV_P_ ev_signal *w)
1543	{	2253	{
		2254	#if EV_MULTIPLICITY
		2255	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		2256	#endif
1544	if (expect_false (ev_is_active (w)))	2257	if (expect_false (ev_is_active (w)))
1545	return;	2258	return;
1546		2259
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
1608	# define SA_RESTART 0
1609	#endif
1610
1611	void
1612	ev_signal_start (EV_P_ struct ev_signal *w)
1613	{
1614	#if EV_MULTIPLICITY
1615	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1616	#endif
1617	if (expect_false (ev_is_active (w)))
1618	return;
1619
1620	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2260	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1621		2261
		2262	evpipe_init (EV_A);
		2263
		2264	EV_FREQUENT_CHECK;
		2265
		2266	{
		2267	#ifndef _WIN32
		2268	sigset_t full, prev;
		2269	sigfillset (&full);
		2270	sigprocmask (SIG_SETMASK, &full, &prev);
		2271	#endif
		2272
		2273	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		2274
		2275	#ifndef _WIN32
		2276	sigprocmask (SIG_SETMASK, &prev, 0);
		2277	#endif
		2278	}
		2279
1622	ev_start (EV_A_ (W)w, 1);	2280	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);	2281	wlist_add (&signals [w->signum - 1].head, (WL)w);
1625		2282
1626	if (!((WL)w)->next)	2283	if (!((WL)w)->next)
1627	{	2284	{
1628	#if _WIN32	2285	#if _WIN32
1629	signal (w->signum, sighandler);	2286	signal (w->signum, ev_sighandler);
1630	#else	2287	#else
1631	struct sigaction sa;	2288	struct sigaction sa;
1632	sa.sa_handler = sighandler;	2289	sa.sa_handler = ev_sighandler;
1633	sigfillset (&sa.sa_mask);	2290	sigfillset (&sa.sa_mask);
1634	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2291	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1635	sigaction (w->signum, &sa, 0);	2292	sigaction (w->signum, &sa, 0);
1636	#endif	2293	#endif
1637	}	2294	}
1638	}
1639		2295
1640	void	2296	EV_FREQUENT_CHECK;
		2297	}
		2298
		2299	void noinline
1641	ev_signal_stop (EV_P_ struct ev_signal *w)	2300	ev_signal_stop (EV_P_ ev_signal *w)
1642	{	2301	{
1643	ev_clear_pending (EV_A_ (W)w);	2302	clear_pending (EV_A_ (W)w);
1644	if (expect_false (!ev_is_active (w)))	2303	if (expect_false (!ev_is_active (w)))
1645	return;	2304	return;
1646		2305
		2306	EV_FREQUENT_CHECK;
		2307
1647	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2308	wlist_del (&signals [w->signum - 1].head, (WL)w);
1648	ev_stop (EV_A_ (W)w);	2309	ev_stop (EV_A_ (W)w);
1649		2310
1650	if (!signals [w->signum - 1].head)	2311	if (!signals [w->signum - 1].head)
1651	signal (w->signum, SIG_DFL);	2312	signal (w->signum, SIG_DFL);
1652	}
1653		2313
		2314	EV_FREQUENT_CHECK;
		2315	}
		2316
1654	void	2317	void
1655	ev_child_start (EV_P_ struct ev_child *w)	2318	ev_child_start (EV_P_ ev_child *w)
1656	{	2319	{
1657	#if EV_MULTIPLICITY	2320	#if EV_MULTIPLICITY
1658	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2321	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1659	#endif	2322	#endif
1660	if (expect_false (ev_is_active (w)))	2323	if (expect_false (ev_is_active (w)))
1661	return;	2324	return;
1662		2325
		2326	EV_FREQUENT_CHECK;
		2327
1663	ev_start (EV_A_ (W)w, 1);	2328	ev_start (EV_A_ (W)w, 1);
1664	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2329	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1665	}
1666		2330
		2331	EV_FREQUENT_CHECK;
		2332	}
		2333
1667	void	2334	void
1668	ev_child_stop (EV_P_ struct ev_child *w)	2335	ev_child_stop (EV_P_ ev_child *w)
1669	{	2336	{
1670	ev_clear_pending (EV_A_ (W)w);	2337	clear_pending (EV_A_ (W)w);
1671	if (expect_false (!ev_is_active (w)))	2338	if (expect_false (!ev_is_active (w)))
1672	return;	2339	return;
1673		2340
		2341	EV_FREQUENT_CHECK;
		2342
1674	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2343	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1675	ev_stop (EV_A_ (W)w);	2344	ev_stop (EV_A_ (W)w);
1676	}
1677		2345
1678	#if EV_MULTIPLICITY	2346	EV_FREQUENT_CHECK;
		2347	}
		2348
		2349	#if EV_STAT_ENABLE
		2350
		2351	# ifdef _WIN32
		2352	# undef lstat
		2353	# define lstat(a,b) _stati64 (a,b)
		2354	# endif
		2355
		2356	#define DEF_STAT_INTERVAL 5.0074891
		2357	#define MIN_STAT_INTERVAL 0.1074891
		2358
		2359	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		2360
		2361	#if EV_USE_INOTIFY
		2362	# define EV_INOTIFY_BUFSIZE 8192
		2363
		2364	static void noinline
		2365	infy_add (EV_P_ ev_stat *w)
		2366	{
		2367	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);
		2368
		2369	if (w->wd < 0)
		2370	{
		2371	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		2372
		2373	/* monitor some parent directory for speedup hints */
		2374	/* note that exceeding the hardcoded limit is not a correctness issue, */
		2375	/* but an efficiency issue only */
		2376	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		2377	{
		2378	char path [4096];
		2379	strcpy (path, w->path);
		2380
		2381	do
		2382	{
		2383	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		2384	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		2385
		2386	char *pend = strrchr (path, '/');
		2387
		2388	if (!pend)
		2389	break; /* whoops, no '/', complain to your admin */
		2390
		2391	*pend = 0;
		2392	w->wd = inotify_add_watch (fs_fd, path, mask);
		2393	}
		2394	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		2395	}
		2396	}
		2397	else
		2398	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		2399
		2400	if (w->wd >= 0)
		2401	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2402	}
		2403
		2404	static void noinline
		2405	infy_del (EV_P_ ev_stat *w)
		2406	{
		2407	int slot;
		2408	int wd = w->wd;
		2409
		2410	if (wd < 0)
		2411	return;
		2412
		2413	w->wd = -2;
		2414	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		2415	wlist_del (&fs_hash [slot].head, (WL)w);
		2416
		2417	/* remove this watcher, if others are watching it, they will rearm */
		2418	inotify_rm_watch (fs_fd, wd);
		2419	}
		2420
		2421	static void noinline
		2422	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		2423	{
		2424	if (slot < 0)
		2425	/* overflow, need to check for all hahs slots */
		2426	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2427	infy_wd (EV_A_ slot, wd, ev);
		2428	else
		2429	{
		2430	WL w_;
		2431
		2432	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		2433	{
		2434	ev_stat *w = (ev_stat *)w_;
		2435	w_ = w_->next; /* lets us remove this watcher and all before it */
		2436
		2437	if (w->wd == wd || wd == -1)
		2438	{
		2439	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		2440	{
		2441	w->wd = -1;
		2442	infy_add (EV_A_ w); /* re-add, no matter what */
		2443	}
		2444
		2445	stat_timer_cb (EV_A_ &w->timer, 0);
		2446	}
		2447	}
		2448	}
		2449	}
		2450
1679	static void	2451	static void
1680	embed_cb (EV_P_ struct ev_io *io, int revents)	2452	infy_cb (EV_P_ ev_io *w, int revents)
1681	{	2453	{
1682	struct ev_embed *w = (struct ev_embed *)(((char *)io) - offsetof (struct ev_embed, io));	2454	char buf [EV_INOTIFY_BUFSIZE];
		2455	struct inotify_event *ev = (struct inotify_event *)buf;
		2456	int ofs;
		2457	int len = read (fs_fd, buf, sizeof (buf));
1683		2458
		2459	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2460	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2461	}
		2462
		2463	void inline_size
		2464	infy_init (EV_P)
		2465	{
		2466	if (fs_fd != -2)
		2467	return;
		2468
		2469	fs_fd = inotify_init ();
		2470
		2471	if (fs_fd >= 0)
		2472	{
		2473	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2474	ev_set_priority (&fs_w, EV_MAXPRI);
		2475	ev_io_start (EV_A_ &fs_w);
		2476	}
		2477	}
		2478
		2479	void inline_size
		2480	infy_fork (EV_P)
		2481	{
		2482	int slot;
		2483
		2484	if (fs_fd < 0)
		2485	return;
		2486
		2487	close (fs_fd);
		2488	fs_fd = inotify_init ();
		2489
		2490	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2491	{
		2492	WL w_ = fs_hash [slot].head;
		2493	fs_hash [slot].head = 0;
		2494
		2495	while (w_)
		2496	{
		2497	ev_stat *w = (ev_stat *)w_;
		2498	w_ = w_->next; /* lets us add this watcher */
		2499
		2500	w->wd = -1;
		2501
		2502	if (fs_fd >= 0)
		2503	infy_add (EV_A_ w); /* re-add, no matter what */
		2504	else
		2505	ev_timer_start (EV_A_ &w->timer);
		2506	}
		2507
		2508	}
		2509	}
		2510
		2511	#endif
		2512
		2513	void
		2514	ev_stat_stat (EV_P_ ev_stat *w)
		2515	{
		2516	if (lstat (w->path, &w->attr) < 0)
		2517	w->attr.st_nlink = 0;
		2518	else if (!w->attr.st_nlink)
		2519	w->attr.st_nlink = 1;
		2520	}
		2521
		2522	static void noinline
		2523	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2524	{
		2525	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2526
		2527	/* we copy this here each the time so that */
		2528	/* prev has the old value when the callback gets invoked */
		2529	w->prev = w->attr;
		2530	ev_stat_stat (EV_A_ w);
		2531
		2532	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2533	if (
		2534	w->prev.st_dev != w->attr.st_dev
		2535	|| w->prev.st_ino != w->attr.st_ino
		2536	|| w->prev.st_mode != w->attr.st_mode
		2537	|| w->prev.st_nlink != w->attr.st_nlink
		2538	|| w->prev.st_uid != w->attr.st_uid
		2539	|| w->prev.st_gid != w->attr.st_gid
		2540	|| w->prev.st_rdev != w->attr.st_rdev
		2541	|| w->prev.st_size != w->attr.st_size
		2542	|| w->prev.st_atime != w->attr.st_atime
		2543	|| w->prev.st_mtime != w->attr.st_mtime
		2544	|| w->prev.st_ctime != w->attr.st_ctime
		2545	) {
		2546	#if EV_USE_INOTIFY
		2547	infy_del (EV_A_ w);
		2548	infy_add (EV_A_ w);
		2549	ev_stat_stat (EV_A_ w); /* avoid race... */
		2550	#endif
		2551
1684	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2552	ev_feed_event (EV_A_ w, EV_STAT);
1685	ev_loop (w->loop, EVLOOP_NONBLOCK);	2553	}
1686	}	2554	}
1687		2555
1688	void	2556	void
1689	ev_embed_start (EV_P_ struct ev_embed *w)	2557	ev_stat_start (EV_P_ ev_stat *w)
1690	{	2558	{
1691	if (expect_false (ev_is_active (w)))	2559	if (expect_false (ev_is_active (w)))
1692	return;	2560	return;
1693		2561
1694	{	2562	/* since we use memcmp, we need to clear any padding data etc. */
1695	struct ev_loop *loop = w->loop;	2563	memset (&w->prev, 0, sizeof (ev_statdata));
1696	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2564	memset (&w->attr, 0, sizeof (ev_statdata));
1697	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1698	}
1699		2565
		2566	ev_stat_stat (EV_A_ w);
		2567
		2568	if (w->interval < MIN_STAT_INTERVAL)
		2569	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2570
		2571	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2572	ev_set_priority (&w->timer, ev_priority (w));
		2573
		2574	#if EV_USE_INOTIFY
		2575	infy_init (EV_A);
		2576
		2577	if (fs_fd >= 0)
		2578	infy_add (EV_A_ w);
		2579	else
		2580	#endif
1700	ev_io_start (EV_A_ &w->io);	2581	ev_timer_start (EV_A_ &w->timer);
		2582
1701	ev_start (EV_A_ (W)w, 1);	2583	ev_start (EV_A_ (W)w, 1);
1702	}
1703		2584
		2585	EV_FREQUENT_CHECK;
		2586	}
		2587
1704	void	2588	void
1705	ev_embed_stop (EV_P_ struct ev_embed *w)	2589	ev_stat_stop (EV_P_ ev_stat *w)
1706	{	2590	{
1707	ev_clear_pending (EV_A_ (W)w);	2591	clear_pending (EV_A_ (W)w);
1708	if (expect_false (!ev_is_active (w)))	2592	if (expect_false (!ev_is_active (w)))
1709	return;	2593	return;
1710		2594
		2595	EV_FREQUENT_CHECK;
		2596
		2597	#if EV_USE_INOTIFY
		2598	infy_del (EV_A_ w);
		2599	#endif
		2600	ev_timer_stop (EV_A_ &w->timer);
		2601
		2602	ev_stop (EV_A_ (W)w);
		2603
		2604	EV_FREQUENT_CHECK;
		2605	}
		2606	#endif
		2607
		2608	#if EV_IDLE_ENABLE
		2609	void
		2610	ev_idle_start (EV_P_ ev_idle *w)
		2611	{
		2612	if (expect_false (ev_is_active (w)))
		2613	return;
		2614
		2615	pri_adjust (EV_A_ (W)w);
		2616
		2617	EV_FREQUENT_CHECK;
		2618
		2619	{
		2620	int active = ++idlecnt [ABSPRI (w)];
		2621
		2622	++idleall;
		2623	ev_start (EV_A_ (W)w, active);
		2624
		2625	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2626	idles [ABSPRI (w)][active - 1] = w;
		2627	}
		2628
		2629	EV_FREQUENT_CHECK;
		2630	}
		2631
		2632	void
		2633	ev_idle_stop (EV_P_ ev_idle *w)
		2634	{
		2635	clear_pending (EV_A_ (W)w);
		2636	if (expect_false (!ev_is_active (w)))
		2637	return;
		2638
		2639	EV_FREQUENT_CHECK;
		2640
		2641	{
		2642	int active = ev_active (w);
		2643
		2644	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2645	ev_active (idles [ABSPRI (w)][active - 1]) = active;
		2646
		2647	ev_stop (EV_A_ (W)w);
		2648	--idleall;
		2649	}
		2650
		2651	EV_FREQUENT_CHECK;
		2652	}
		2653	#endif
		2654
		2655	void
		2656	ev_prepare_start (EV_P_ ev_prepare *w)
		2657	{
		2658	if (expect_false (ev_is_active (w)))
		2659	return;
		2660
		2661	EV_FREQUENT_CHECK;
		2662
		2663	ev_start (EV_A_ (W)w, ++preparecnt);
		2664	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2665	prepares [preparecnt - 1] = w;
		2666
		2667	EV_FREQUENT_CHECK;
		2668	}
		2669
		2670	void
		2671	ev_prepare_stop (EV_P_ ev_prepare *w)
		2672	{
		2673	clear_pending (EV_A_ (W)w);
		2674	if (expect_false (!ev_is_active (w)))
		2675	return;
		2676
		2677	EV_FREQUENT_CHECK;
		2678
		2679	{
		2680	int active = ev_active (w);
		2681
		2682	prepares [active - 1] = prepares [--preparecnt];
		2683	ev_active (prepares [active - 1]) = active;
		2684	}
		2685
		2686	ev_stop (EV_A_ (W)w);
		2687
		2688	EV_FREQUENT_CHECK;
		2689	}
		2690
		2691	void
		2692	ev_check_start (EV_P_ ev_check *w)
		2693	{
		2694	if (expect_false (ev_is_active (w)))
		2695	return;
		2696
		2697	EV_FREQUENT_CHECK;
		2698
		2699	ev_start (EV_A_ (W)w, ++checkcnt);
		2700	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2701	checks [checkcnt - 1] = w;
		2702
		2703	EV_FREQUENT_CHECK;
		2704	}
		2705
		2706	void
		2707	ev_check_stop (EV_P_ ev_check *w)
		2708	{
		2709	clear_pending (EV_A_ (W)w);
		2710	if (expect_false (!ev_is_active (w)))
		2711	return;
		2712
		2713	EV_FREQUENT_CHECK;
		2714
		2715	{
		2716	int active = ev_active (w);
		2717
		2718	checks [active - 1] = checks [--checkcnt];
		2719	ev_active (checks [active - 1]) = active;
		2720	}
		2721
		2722	ev_stop (EV_A_ (W)w);
		2723
		2724	EV_FREQUENT_CHECK;
		2725	}
		2726
		2727	#if EV_EMBED_ENABLE
		2728	void noinline
		2729	ev_embed_sweep (EV_P_ ev_embed *w)
		2730	{
		2731	ev_loop (w->other, EVLOOP_NONBLOCK);
		2732	}
		2733
		2734	static void
		2735	embed_io_cb (EV_P_ ev_io *io, int revents)
		2736	{
		2737	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2738
		2739	if (ev_cb (w))
		2740	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2741	else
		2742	ev_loop (w->other, EVLOOP_NONBLOCK);
		2743	}
		2744
		2745	static void
		2746	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2747	{
		2748	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2749
		2750	{
		2751	struct ev_loop *loop = w->other;
		2752
		2753	while (fdchangecnt)
		2754	{
		2755	fd_reify (EV_A);
		2756	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2757	}
		2758	}
		2759	}
		2760
		2761	#if 0
		2762	static void
		2763	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2764	{
		2765	ev_idle_stop (EV_A_ idle);
		2766	}
		2767	#endif
		2768
		2769	void
		2770	ev_embed_start (EV_P_ ev_embed *w)
		2771	{
		2772	if (expect_false (ev_is_active (w)))
		2773	return;
		2774
		2775	{
		2776	struct ev_loop *loop = w->other;
		2777	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2778	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
		2779	}
		2780
		2781	EV_FREQUENT_CHECK;
		2782
		2783	ev_set_priority (&w->io, ev_priority (w));
		2784	ev_io_start (EV_A_ &w->io);
		2785
		2786	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2787	ev_set_priority (&w->prepare, EV_MINPRI);
		2788	ev_prepare_start (EV_A_ &w->prepare);
		2789
		2790	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2791
		2792	ev_start (EV_A_ (W)w, 1);
		2793
		2794	EV_FREQUENT_CHECK;
		2795	}
		2796
		2797	void
		2798	ev_embed_stop (EV_P_ ev_embed *w)
		2799	{
		2800	clear_pending (EV_A_ (W)w);
		2801	if (expect_false (!ev_is_active (w)))
		2802	return;
		2803
		2804	EV_FREQUENT_CHECK;
		2805
1711	ev_io_stop (EV_A_ &w->io);	2806	ev_io_stop (EV_A_ &w->io);
		2807	ev_prepare_stop (EV_A_ &w->prepare);
		2808
1712	ev_stop (EV_A_ (W)w);	2809	ev_stop (EV_A_ (W)w);
		2810
		2811	EV_FREQUENT_CHECK;
		2812	}
		2813	#endif
		2814
		2815	#if EV_FORK_ENABLE
		2816	void
		2817	ev_fork_start (EV_P_ ev_fork *w)
		2818	{
		2819	if (expect_false (ev_is_active (w)))
		2820	return;
		2821
		2822	EV_FREQUENT_CHECK;
		2823
		2824	ev_start (EV_A_ (W)w, ++forkcnt);
		2825	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2826	forks [forkcnt - 1] = w;
		2827
		2828	EV_FREQUENT_CHECK;
		2829	}
		2830
		2831	void
		2832	ev_fork_stop (EV_P_ ev_fork *w)
		2833	{
		2834	clear_pending (EV_A_ (W)w);
		2835	if (expect_false (!ev_is_active (w)))
		2836	return;
		2837
		2838	EV_FREQUENT_CHECK;
		2839
		2840	{
		2841	int active = ev_active (w);
		2842
		2843	forks [active - 1] = forks [--forkcnt];
		2844	ev_active (forks [active - 1]) = active;
		2845	}
		2846
		2847	ev_stop (EV_A_ (W)w);
		2848
		2849	EV_FREQUENT_CHECK;
		2850	}
		2851	#endif
		2852
		2853	#if EV_ASYNC_ENABLE
		2854	void
		2855	ev_async_start (EV_P_ ev_async *w)
		2856	{
		2857	if (expect_false (ev_is_active (w)))
		2858	return;
		2859
		2860	evpipe_init (EV_A);
		2861
		2862	EV_FREQUENT_CHECK;
		2863
		2864	ev_start (EV_A_ (W)w, ++asynccnt);
		2865	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2866	asyncs [asynccnt - 1] = w;
		2867
		2868	EV_FREQUENT_CHECK;
		2869	}
		2870
		2871	void
		2872	ev_async_stop (EV_P_ ev_async *w)
		2873	{
		2874	clear_pending (EV_A_ (W)w);
		2875	if (expect_false (!ev_is_active (w)))
		2876	return;
		2877
		2878	EV_FREQUENT_CHECK;
		2879
		2880	{
		2881	int active = ev_active (w);
		2882
		2883	asyncs [active - 1] = asyncs [--asynccnt];
		2884	ev_active (asyncs [active - 1]) = active;
		2885	}
		2886
		2887	ev_stop (EV_A_ (W)w);
		2888
		2889	EV_FREQUENT_CHECK;
		2890	}
		2891
		2892	void
		2893	ev_async_send (EV_P_ ev_async *w)
		2894	{
		2895	w->sent = 1;
		2896	evpipe_write (EV_A_ &gotasync);
1713	}	2897	}
1714	#endif	2898	#endif
1715		2899
1716	/*****************************************************************************/	2900	/*****************************************************************************/
1717		2901
1718	struct ev_once	2902	struct ev_once
1719	{	2903	{
1720	struct ev_io io;	2904	ev_io io;
1721	struct ev_timer to;	2905	ev_timer to;
1722	void (*cb)(int revents, void *arg);	2906	void (*cb)(int revents, void *arg);
1723	void *arg;	2907	void *arg;
1724	};	2908	};
1725		2909
1726	static void	2910	static void
…		…
1735		2919
1736	cb (revents, arg);	2920	cb (revents, arg);
1737	}	2921	}
1738		2922
1739	static void	2923	static void
1740	once_cb_io (EV_P_ struct ev_io *w, int revents)	2924	once_cb_io (EV_P_ ev_io *w, int revents)
1741	{	2925	{
1742	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2926	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1743	}	2927	}
1744		2928
1745	static void	2929	static void
1746	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2930	once_cb_to (EV_P_ ev_timer *w, int revents)
1747	{	2931	{
1748	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2932	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1749	}	2933	}
1750		2934
1751	void	2935	void
…		…
1775	ev_timer_set (&once->to, timeout, 0.);	2959	ev_timer_set (&once->to, timeout, 0.);
1776	ev_timer_start (EV_A_ &once->to);	2960	ev_timer_start (EV_A_ &once->to);
1777	}	2961	}
1778	}	2962	}
1779		2963
		2964	#if EV_MULTIPLICITY
		2965	#include "ev_wrap.h"
		2966	#endif
		2967
1780	#ifdef __cplusplus	2968	#ifdef __cplusplus
1781	}	2969	}
1782	#endif	2970	#endif
1783		2971

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