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Comparing libev/ev.c (file contents):
Revision 1.134 by root, Fri Nov 23 19:13:33 2007 UTC vs.
Revision 1.250 by root, Thu May 22 02:44:57 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 3
		242	# define EV_USE_4HEAP 1
		243	# define EV_HEAP_CACHE_AT 1
		244	#endif
		245
		246	#ifndef EV_VERIFY
		247	# define EV_VERIFY !EV_MINIMAL
		248	#endif
		249
		250	#ifndef EV_USE_4HEAP
		251	# define EV_USE_4HEAP !EV_MINIMAL
		252	#endif
		253
		254	#ifndef EV_HEAP_CACHE_AT
		255	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		256	#endif
		257
		258	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
162		259
163	#ifndef CLOCK_MONOTONIC	260	#ifndef CLOCK_MONOTONIC
164	# undef EV_USE_MONOTONIC	261	# undef EV_USE_MONOTONIC
165	# define EV_USE_MONOTONIC 0	262	# define EV_USE_MONOTONIC 0
166	#endif	263	#endif
…		…
168	#ifndef CLOCK_REALTIME	265	#ifndef CLOCK_REALTIME
169	# undef EV_USE_REALTIME	266	# undef EV_USE_REALTIME
170	# define EV_USE_REALTIME 0	267	# define EV_USE_REALTIME 0
171	#endif	268	#endif
172		269
		270	#if !EV_STAT_ENABLE
		271	# undef EV_USE_INOTIFY
		272	# define EV_USE_INOTIFY 0
		273	#endif
		274
		275	#if !EV_USE_NANOSLEEP
		276	# ifndef _WIN32
		277	# include <sys/select.h>
		278	# endif
		279	#endif
		280
		281	#if EV_USE_INOTIFY
		282	# include <sys/inotify.h>
		283	#endif
		284
173	#if EV_SELECT_IS_WINSOCKET	285	#if EV_SELECT_IS_WINSOCKET
174	# include <winsock.h>	286	# include <winsock.h>
175	#endif	287	#endif
176		288
		289	#if EV_USE_EVENTFD
		290	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		291	# include <stdint.h>
		292	# ifdef __cplusplus
		293	extern "C" {
		294	# endif
		295	int eventfd (unsigned int initval, int flags);
		296	# ifdef __cplusplus
		297	}
		298	# endif
		299	#endif
		300
177	/**/	301	/**/
		302
		303	#if EV_VERIFY >= 3
		304	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		305	#else
		306	# define EV_FREQUENT_CHECK do { } while (0)
		307	#endif
		308
		309	/*
		310	* This is used to avoid floating point rounding problems.
		311	* It is added to ev_rt_now when scheduling periodics
		312	* to ensure progress, time-wise, even when rounding
		313	* errors are against us.
		314	* This value is good at least till the year 4000.
		315	* Better solutions welcome.
		316	*/
		317	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
178		318
179	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	319	#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) */	320	#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 */	321	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
183		322
184	#ifdef EV_H
185	# include EV_H
186	#else
187	# include "ev.h"
188	#endif
189
190	#if __GNUC__ >= 3	323	#if __GNUC__ >= 4
191	# define expect(expr,value) __builtin_expect ((expr),(value))	324	# define expect(expr,value) __builtin_expect ((expr),(value))
192	# define inline static inline	325	# define noinline __attribute__ ((noinline))
193	#else	326	#else
194	# define expect(expr,value) (expr)	327	# define expect(expr,value) (expr)
195	# define inline static	328	# define noinline
		329	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
		330	# define inline
		331	# endif
196	#endif	332	#endif
197		333
198	#define expect_false(expr) expect ((expr) != 0, 0)	334	#define expect_false(expr) expect ((expr) != 0, 0)
199	#define expect_true(expr) expect ((expr) != 0, 1)	335	#define expect_true(expr) expect ((expr) != 0, 1)
		336	#define inline_size static inline
		337
		338	#if EV_MINIMAL
		339	# define inline_speed static noinline
		340	#else
		341	# define inline_speed static inline
		342	#endif
200		343
201	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	344	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
202	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	345	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
203		346
204	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	347	#define EMPTY /* required for microsofts broken pseudo-c compiler */
205	#define EMPTY2(a,b) /* used to suppress some warnings */	348	#define EMPTY2(a,b) /* used to suppress some warnings */
206		349
207	typedef struct ev_watcher *W;	350	typedef ev_watcher *W;
208	typedef struct ev_watcher_list *WL;	351	typedef ev_watcher_list *WL;
209	typedef struct ev_watcher_time *WT;	352	typedef ev_watcher_time *WT;
210		353
		354	#define ev_active(w) ((W)(w))->active
		355	#define ev_at(w) ((WT)(w))->at
		356
		357	#if EV_USE_MONOTONIC
		358	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		359	/* giving it a reasonably high chance of working on typical architetcures */
211	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	360	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		361	#endif
212		362
213	#ifdef _WIN32	363	#ifdef _WIN32
214	# include "ev_win32.c"	364	# include "ev_win32.c"
215	#endif	365	#endif
216		366
217	/*****************************************************************************/	367	/*****************************************************************************/
218		368
219	static void (*syserr_cb)(const char *msg);	369	static void (*syserr_cb)(const char *msg);
220		370
		371	void
221	void ev_set_syserr_cb (void (*cb)(const char *msg))	372	ev_set_syserr_cb (void (*cb)(const char *msg))
222	{	373	{
223	syserr_cb = cb;	374	syserr_cb = cb;
224	}	375	}
225		376
226	static void	377	static void noinline
227	syserr (const char *msg)	378	syserr (const char *msg)
228	{	379	{
229	if (!msg)	380	if (!msg)
230	msg = "(libev) system error";	381	msg = "(libev) system error";
231		382
…		…
236	perror (msg);	387	perror (msg);
237	abort ();	388	abort ();
238	}	389	}
239	}	390	}
240		391
		392	static void *
		393	ev_realloc_emul (void *ptr, long size)
		394	{
		395	/* some systems, notably openbsd and darwin, fail to properly
		396	* implement realloc (x, 0) (as required by both ansi c-98 and
		397	* the single unix specification, so work around them here.
		398	*/
		399
		400	if (size)
		401	return realloc (ptr, size);
		402
		403	free (ptr);
		404	return 0;
		405	}
		406
241	static void *(*alloc)(void *ptr, long size);	407	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
242		408
		409	void
243	void ev_set_allocator (void *(*cb)(void *ptr, long size))	410	ev_set_allocator (void *(*cb)(void *ptr, long size))
244	{	411	{
245	alloc = cb;	412	alloc = cb;
246	}	413	}
247		414
248	static void *	415	inline_speed void *
249	ev_realloc (void *ptr, long size)	416	ev_realloc (void *ptr, long size)
250	{	417	{
251	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	418	ptr = alloc (ptr, size);
252		419
253	if (!ptr && size)	420	if (!ptr && size)
254	{	421	{
255	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	422	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
256	abort ();	423	abort ();
…		…
277	typedef struct	444	typedef struct
278	{	445	{
279	W w;	446	W w;
280	int events;	447	int events;
281	} ANPENDING;	448	} ANPENDING;
		449
		450	#if EV_USE_INOTIFY
		451	/* hash table entry per inotify-id */
		452	typedef struct
		453	{
		454	WL head;
		455	} ANFS;
		456	#endif
		457
		458	/* Heap Entry */
		459	#if EV_HEAP_CACHE_AT
		460	typedef struct {
		461	ev_tstamp at;
		462	WT w;
		463	} ANHE;
		464
		465	#define ANHE_w(he) (he).w /* access watcher, read-write */
		466	#define ANHE_at(he) (he).at /* access cached at, read-only */
		467	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		468	#else
		469	typedef WT ANHE;
		470
		471	#define ANHE_w(he) (he)
		472	#define ANHE_at(he) (he)->at
		473	#define ANHE_at_cache(he)
		474	#endif
282		475
283	#if EV_MULTIPLICITY	476	#if EV_MULTIPLICITY
284		477
285	struct ev_loop	478	struct ev_loop
286	{	479	{
…		…
320	gettimeofday (&tv, 0);	513	gettimeofday (&tv, 0);
321	return tv.tv_sec + tv.tv_usec * 1e-6;	514	return tv.tv_sec + tv.tv_usec * 1e-6;
322	#endif	515	#endif
323	}	516	}
324		517
325	inline ev_tstamp	518	ev_tstamp inline_size
326	get_clock (void)	519	get_clock (void)
327	{	520	{
328	#if EV_USE_MONOTONIC	521	#if EV_USE_MONOTONIC
329	if (expect_true (have_monotonic))	522	if (expect_true (have_monotonic))
330	{	523	{
…		…
343	{	536	{
344	return ev_rt_now;	537	return ev_rt_now;
345	}	538	}
346	#endif	539	#endif
347		540
348	#define array_roundsize(type,n) (((n) | 4) & ~3)	541	void
		542	ev_sleep (ev_tstamp delay)
		543	{
		544	if (delay > 0.)
		545	{
		546	#if EV_USE_NANOSLEEP
		547	struct timespec ts;
		548
		549	ts.tv_sec = (time_t)delay;
		550	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		551
		552	nanosleep (&ts, 0);
		553	#elif defined(_WIN32)
		554	Sleep ((unsigned long)(delay * 1e3));
		555	#else
		556	struct timeval tv;
		557
		558	tv.tv_sec = (time_t)delay;
		559	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		560
		561	select (0, 0, 0, 0, &tv);
		562	#endif
		563	}
		564	}
		565
		566	/*****************************************************************************/
		567
		568	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		569
		570	int inline_size
		571	array_nextsize (int elem, int cur, int cnt)
		572	{
		573	int ncur = cur + 1;
		574
		575	do
		576	ncur <<= 1;
		577	while (cnt > ncur);
		578
		579	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
		580	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
		581	{
		582	ncur *= elem;
		583	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
		584	ncur = ncur - sizeof (void *) * 4;
		585	ncur /= elem;
		586	}
		587
		588	return ncur;
		589	}
		590
		591	static noinline void *
		592	array_realloc (int elem, void *base, int *cur, int cnt)
		593	{
		594	*cur = array_nextsize (elem, *cur, cnt);
		595	return ev_realloc (base, elem * *cur);
		596	}
349		597
350	#define array_needsize(type,base,cur,cnt,init) \	598	#define array_needsize(type,base,cur,cnt,init) \
351	if (expect_false ((cnt) > cur)) \	599	if (expect_false ((cnt) > (cur))) \
352	{ \	600	{ \
353	int newcnt = cur; \	601	int ocur_ = (cur); \
354	do \	602	(base) = (type *)array_realloc \
355	{ \	603	(sizeof (type), (base), &(cur), (cnt)); \
356	newcnt = array_roundsize (type, newcnt << 1); \	604	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	}	605	}
364		606
		607	#if 0
365	#define array_slim(type,stem) \	608	#define array_slim(type,stem) \
366	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	609	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
367	{ \	610	{ \
368	stem ## max = array_roundsize (stem ## cnt >> 1); \	611	stem ## max = array_roundsize (stem ## cnt >> 1); \
369	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	612	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
370	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	613	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
371	}	614	}
		615	#endif
372		616
373	#define array_free(stem, idx) \	617	#define array_free(stem, idx) \
374	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	618	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
375		619
376	/*****************************************************************************/	620	/*****************************************************************************/
377		621
378	static void	622	void noinline
		623	ev_feed_event (EV_P_ void *w, int revents)
		624	{
		625	W w_ = (W)w;
		626	int pri = ABSPRI (w_);
		627
		628	if (expect_false (w_->pending))
		629	pendings [pri][w_->pending - 1].events |= revents;
		630	else
		631	{
		632	w_->pending = ++pendingcnt [pri];
		633	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		634	pendings [pri][w_->pending - 1].w = w_;
		635	pendings [pri][w_->pending - 1].events = revents;
		636	}
		637	}
		638
		639	void inline_speed
		640	queue_events (EV_P_ W *events, int eventcnt, int type)
		641	{
		642	int i;
		643
		644	for (i = 0; i < eventcnt; ++i)
		645	ev_feed_event (EV_A_ events [i], type);
		646	}
		647
		648	/*****************************************************************************/
		649
		650	void inline_size
379	anfds_init (ANFD *base, int count)	651	anfds_init (ANFD *base, int count)
380	{	652	{
381	while (count--)	653	while (count--)
382	{	654	{
383	base->head = 0;	655	base->head = 0;
…		…
386		658
387	++base;	659	++base;
388	}	660	}
389	}	661	}
390		662
391	void	663	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)	664	fd_event (EV_P_ int fd, int revents)
422	{	665	{
423	ANFD *anfd = anfds + fd;	666	ANFD *anfd = anfds + fd;
424	struct ev_io *w;	667	ev_io *w;
425		668
426	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	669	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
427	{	670	{
428	int ev = w->events & revents;	671	int ev = w->events & revents;
429		672
430	if (ev)	673	if (ev)
431	ev_feed_event (EV_A_ (W)w, ev);	674	ev_feed_event (EV_A_ (W)w, ev);
…		…
433	}	676	}
434		677
435	void	678	void
436	ev_feed_fd_event (EV_P_ int fd, int revents)	679	ev_feed_fd_event (EV_P_ int fd, int revents)
437	{	680	{
		681	if (fd >= 0 && fd < anfdmax)
438	fd_event (EV_A_ fd, revents);	682	fd_event (EV_A_ fd, revents);
439	}	683	}
440		684
441	/*****************************************************************************/	685	void inline_size
442
443	inline void
444	fd_reify (EV_P)	686	fd_reify (EV_P)
445	{	687	{
446	int i;	688	int i;
447		689
448	for (i = 0; i < fdchangecnt; ++i)	690	for (i = 0; i < fdchangecnt; ++i)
449	{	691	{
450	int fd = fdchanges [i];	692	int fd = fdchanges [i];
451	ANFD *anfd = anfds + fd;	693	ANFD *anfd = anfds + fd;
452	struct ev_io *w;	694	ev_io *w;
453		695
454	int events = 0;	696	unsigned char events = 0;
455		697
456	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	698	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
457	events |= w->events;	699	events |= (unsigned char)w->events;
458		700
459	#if EV_SELECT_IS_WINSOCKET	701	#if EV_SELECT_IS_WINSOCKET
460	if (events)	702	if (events)
461	{	703	{
462	unsigned long argp;	704	unsigned long argp;
		705	#ifdef EV_FD_TO_WIN32_HANDLE
		706	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		707	#else
463	anfd->handle = _get_osfhandle (fd);	708	anfd->handle = _get_osfhandle (fd);
		709	#endif
464	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	710	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
465	}	711	}
466	#endif	712	#endif
467		713
		714	{
		715	unsigned char o_events = anfd->events;
		716	unsigned char o_reify = anfd->reify;
		717
468	anfd->reify = 0;	718	anfd->reify = 0;
469
470	backend_modify (EV_A_ fd, anfd->events, events);
471	anfd->events = events;	719	anfd->events = events;
		720
		721	if (o_events != events || o_reify & EV_IOFDSET)
		722	backend_modify (EV_A_ fd, o_events, events);
		723	}
472	}	724	}
473		725
474	fdchangecnt = 0;	726	fdchangecnt = 0;
475	}	727	}
476		728
477	static void	729	void inline_size
478	fd_change (EV_P_ int fd)	730	fd_change (EV_P_ int fd, int flags)
479	{	731	{
480	if (expect_false (anfds [fd].reify))	732	unsigned char reify = anfds [fd].reify;
481	return;
482
483	anfds [fd].reify = 1;	733	anfds [fd].reify |= flags;
484		734
		735	if (expect_true (!reify))
		736	{
485	++fdchangecnt;	737	++fdchangecnt;
486	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	738	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
487	fdchanges [fdchangecnt - 1] = fd;	739	fdchanges [fdchangecnt - 1] = fd;
		740	}
488	}	741	}
489		742
490	static void	743	void inline_speed
491	fd_kill (EV_P_ int fd)	744	fd_kill (EV_P_ int fd)
492	{	745	{
493	struct ev_io *w;	746	ev_io *w;
494		747
495	while ((w = (struct ev_io *)anfds [fd].head))	748	while ((w = (ev_io *)anfds [fd].head))
496	{	749	{
497	ev_io_stop (EV_A_ w);	750	ev_io_stop (EV_A_ w);
498	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	751	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
499	}	752	}
500	}	753	}
501		754
502	inline int	755	int inline_size
503	fd_valid (int fd)	756	fd_valid (int fd)
504	{	757	{
505	#ifdef _WIN32	758	#ifdef _WIN32
506	return _get_osfhandle (fd) != -1;	759	return _get_osfhandle (fd) != -1;
507	#else	760	#else
508	return fcntl (fd, F_GETFD) != -1;	761	return fcntl (fd, F_GETFD) != -1;
509	#endif	762	#endif
510	}	763	}
511		764
512	/* called on EBADF to verify fds */	765	/* called on EBADF to verify fds */
513	static void	766	static void noinline
514	fd_ebadf (EV_P)	767	fd_ebadf (EV_P)
515	{	768	{
516	int fd;	769	int fd;
517		770
518	for (fd = 0; fd < anfdmax; ++fd)	771	for (fd = 0; fd < anfdmax; ++fd)
…		…
520	if (!fd_valid (fd) == -1 && errno == EBADF)	773	if (!fd_valid (fd) == -1 && errno == EBADF)
521	fd_kill (EV_A_ fd);	774	fd_kill (EV_A_ fd);
522	}	775	}
523		776
524	/* called on ENOMEM in select/poll to kill some fds and retry */	777	/* called on ENOMEM in select/poll to kill some fds and retry */
525	static void	778	static void noinline
526	fd_enomem (EV_P)	779	fd_enomem (EV_P)
527	{	780	{
528	int fd;	781	int fd;
529		782
530	for (fd = anfdmax; fd--; )	783	for (fd = anfdmax; fd--; )
…		…
534	return;	787	return;
535	}	788	}
536	}	789	}
537		790
538	/* usually called after fork if backend needs to re-arm all fds from scratch */	791	/* usually called after fork if backend needs to re-arm all fds from scratch */
539	static void	792	static void noinline
540	fd_rearm_all (EV_P)	793	fd_rearm_all (EV_P)
541	{	794	{
542	int fd;	795	int fd;
543		796
544	/* this should be highly optimised to not do anything but set a flag */
545	for (fd = 0; fd < anfdmax; ++fd)	797	for (fd = 0; fd < anfdmax; ++fd)
546	if (anfds [fd].events)	798	if (anfds [fd].events)
547	{	799	{
548	anfds [fd].events = 0;	800	anfds [fd].events = 0;
549	fd_change (EV_A_ fd);	801	fd_change (EV_A_ fd, EV_IOFDSET | 1);
550	}	802	}
551	}	803	}
552		804
553	/*****************************************************************************/	805	/*****************************************************************************/
554		806
		807	/*
		808	* the heap functions want a real array index. array index 0 uis guaranteed to not
		809	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		810	* the branching factor of the d-tree.
		811	*/
		812
		813	/*
		814	* at the moment we allow libev the luxury of two heaps,
		815	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		816	* which is more cache-efficient.
		817	* the difference is about 5% with 50000+ watchers.
		818	*/
		819	#if EV_USE_4HEAP
		820
		821	#define DHEAP 4
		822	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		823	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		824	#define UPHEAP_DONE(p,k) ((p) == (k))
		825
		826	/* away from the root */
		827	void inline_speed
		828	downheap (ANHE *heap, int N, int k)
		829	{
		830	ANHE he = heap [k];
		831	ANHE *E = heap + N + HEAP0;
		832
		833	for (;;)
		834	{
		835	ev_tstamp minat;
		836	ANHE *minpos;
		837	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
		838
		839	/* find minimum child */
		840	if (expect_true (pos + DHEAP - 1 < E))
		841	{
		842	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		843	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		844	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		845	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		846	}
		847	else if (pos < E)
		848	{
		849	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		850	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		851	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		852	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		853	}
		854	else
		855	break;
		856
		857	if (ANHE_at (he) <= minat)
		858	break;
		859
		860	heap [k] = *minpos;
		861	ev_active (ANHE_w (*minpos)) = k;
		862
		863	k = minpos - heap;
		864	}
		865
		866	heap [k] = he;
		867	ev_active (ANHE_w (he)) = k;
		868	}
		869
		870	#else /* 4HEAP */
		871
		872	#define HEAP0 1
		873	#define HPARENT(k) ((k) >> 1)
		874	#define UPHEAP_DONE(p,k) (!(p))
		875
		876	/* away from the root */
		877	void inline_speed
		878	downheap (ANHE *heap, int N, int k)
		879	{
		880	ANHE he = heap [k];
		881
		882	for (;;)
		883	{
		884	int c = k << 1;
		885
		886	if (c > N + HEAP0 - 1)
		887	break;
		888
		889	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		890	? 1 : 0;
		891
		892	if (ANHE_at (he) <= ANHE_at (heap [c]))
		893	break;
		894
		895	heap [k] = heap [c];
		896	ev_active (ANHE_w (heap [k])) = k;
		897
		898	k = c;
		899	}
		900
		901	heap [k] = he;
		902	ev_active (ANHE_w (he)) = k;
		903	}
		904	#endif
		905
		906	/* towards the root */
		907	void inline_speed
		908	upheap (ANHE *heap, int k)
		909	{
		910	ANHE he = heap [k];
		911
		912	for (;;)
		913	{
		914	int p = HPARENT (k);
		915
		916	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		917	break;
		918
		919	heap [k] = heap [p];
		920	ev_active (ANHE_w (heap [k])) = k;
		921	k = p;
		922	}
		923
		924	heap [k] = he;
		925	ev_active (ANHE_w (he)) = k;
		926	}
		927
		928	void inline_size
		929	adjustheap (ANHE *heap, int N, int k)
		930	{
		931	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
		932	upheap (heap, k);
		933	else
		934	downheap (heap, N, k);
		935	}
		936
		937	/* rebuild the heap: this function is used only once and executed rarely */
		938	void inline_size
		939	reheap (ANHE *heap, int N)
		940	{
		941	int i;
		942	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		943	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		944	for (i = 0; i < N; ++i)
		945	upheap (heap, i + HEAP0);
		946	}
		947
		948	#if EV_VERIFY
555	static void	949	static void
556	upheap (WT *heap, int k)	950	checkheap (ANHE *heap, int N)
557	{	951	{
558	WT w = heap [k];	952	int i;
559		953
560	while (k && heap [k >> 1]->at > w->at)	954	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	}	955	{
566		956	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
567	heap [k] = w;	957	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
568	((W)heap [k])->active = k + 1;	958	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	{	959	}
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	}	960	}
595		961	#endif
596	inline void
597	adjustheap (WT *heap, int N, int k)
598	{
599	upheap (heap, k);
600	downheap (heap, N, k);
601	}
602		962
603	/*****************************************************************************/	963	/*****************************************************************************/
604		964
605	typedef struct	965	typedef struct
606	{	966	{
607	WL head;	967	WL head;
608	sig_atomic_t volatile gotsig;	968	EV_ATOMIC_T gotsig;
609	} ANSIG;	969	} ANSIG;
610		970
611	static ANSIG *signals;	971	static ANSIG *signals;
612	static int signalmax;	972	static int signalmax;
613		973
614	static int sigpipe [2];	974	static EV_ATOMIC_T gotsig;
615	static sig_atomic_t volatile gotsig;
616	static struct ev_io sigev;
617		975
618	static void	976	void inline_size
619	signals_init (ANSIG *base, int count)	977	signals_init (ANSIG *base, int count)
620	{	978	{
621	while (count--)	979	while (count--)
622	{	980	{
623	base->head = 0;	981	base->head = 0;
…		…
625		983
626	++base;	984	++base;
627	}	985	}
628	}	986	}
629		987
630	static void	988	/*****************************************************************************/
631	sighandler (int signum)
632	{
633	#if _WIN32
634	signal (signum, sighandler);
635	#endif
636		989
637	signals [signum - 1].gotsig = 1;	990	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)	991	fd_intern (int fd)
683	{	992	{
684	#ifdef _WIN32	993	#ifdef _WIN32
685	int arg = 1;	994	int arg = 1;
686	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	995	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
688	fcntl (fd, F_SETFD, FD_CLOEXEC);	997	fcntl (fd, F_SETFD, FD_CLOEXEC);
689	fcntl (fd, F_SETFL, O_NONBLOCK);	998	fcntl (fd, F_SETFL, O_NONBLOCK);
690	#endif	999	#endif
691	}	1000	}
692		1001
		1002	static void noinline
		1003	evpipe_init (EV_P)
		1004	{
		1005	if (!ev_is_active (&pipeev))
		1006	{
		1007	#if EV_USE_EVENTFD
		1008	if ((evfd = eventfd (0, 0)) >= 0)
		1009	{
		1010	evpipe [0] = -1;
		1011	fd_intern (evfd);
		1012	ev_io_set (&pipeev, evfd, EV_READ);
		1013	}
		1014	else
		1015	#endif
		1016	{
		1017	while (pipe (evpipe))
		1018	syserr ("(libev) error creating signal/async pipe");
		1019
		1020	fd_intern (evpipe [0]);
		1021	fd_intern (evpipe [1]);
		1022	ev_io_set (&pipeev, evpipe [0], EV_READ);
		1023	}
		1024
		1025	ev_io_start (EV_A_ &pipeev);
		1026	ev_unref (EV_A); /* watcher should not keep loop alive */
		1027	}
		1028	}
		1029
		1030	void inline_size
		1031	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		1032	{
		1033	if (!*flag)
		1034	{
		1035	int old_errno = errno; /* save errno because write might clobber it */
		1036
		1037	*flag = 1;
		1038
		1039	#if EV_USE_EVENTFD
		1040	if (evfd >= 0)
		1041	{
		1042	uint64_t counter = 1;
		1043	write (evfd, &counter, sizeof (uint64_t));
		1044	}
		1045	else
		1046	#endif
		1047	write (evpipe [1], &old_errno, 1);
		1048
		1049	errno = old_errno;
		1050	}
		1051	}
		1052
693	static void	1053	static void
694	siginit (EV_P)	1054	pipecb (EV_P_ ev_io *iow, int revents)
695	{	1055	{
696	fd_intern (sigpipe [0]);	1056	#if EV_USE_EVENTFD
697	fd_intern (sigpipe [1]);	1057	if (evfd >= 0)
		1058	{
		1059	uint64_t counter;
		1060	read (evfd, &counter, sizeof (uint64_t));
		1061	}
		1062	else
		1063	#endif
		1064	{
		1065	char dummy;
		1066	read (evpipe [0], &dummy, 1);
		1067	}
698		1068
699	ev_io_set (&sigev, sigpipe [0], EV_READ);	1069	if (gotsig && ev_is_default_loop (EV_A))
700	ev_io_start (EV_A_ &sigev);	1070	{
701	ev_unref (EV_A); /* child watcher should not keep loop alive */	1071	int signum;
		1072	gotsig = 0;
		1073
		1074	for (signum = signalmax; signum--; )
		1075	if (signals [signum].gotsig)
		1076	ev_feed_signal_event (EV_A_ signum + 1);
		1077	}
		1078
		1079	#if EV_ASYNC_ENABLE
		1080	if (gotasync)
		1081	{
		1082	int i;
		1083	gotasync = 0;
		1084
		1085	for (i = asynccnt; i--; )
		1086	if (asyncs [i]->sent)
		1087	{
		1088	asyncs [i]->sent = 0;
		1089	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		1090	}
		1091	}
		1092	#endif
702	}	1093	}
703		1094
704	/*****************************************************************************/	1095	/*****************************************************************************/
705		1096
706	static struct ev_child *childs [PID_HASHSIZE];	1097	static void
		1098	ev_sighandler (int signum)
		1099	{
		1100	#if EV_MULTIPLICITY
		1101	struct ev_loop *loop = &default_loop_struct;
		1102	#endif
		1103
		1104	#if _WIN32
		1105	signal (signum, ev_sighandler);
		1106	#endif
		1107
		1108	signals [signum - 1].gotsig = 1;
		1109	evpipe_write (EV_A_ &gotsig);
		1110	}
		1111
		1112	void noinline
		1113	ev_feed_signal_event (EV_P_ int signum)
		1114	{
		1115	WL w;
		1116
		1117	#if EV_MULTIPLICITY
		1118	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		1119	#endif
		1120
		1121	--signum;
		1122
		1123	if (signum < 0 || signum >= signalmax)
		1124	return;
		1125
		1126	signals [signum].gotsig = 0;
		1127
		1128	for (w = signals [signum].head; w; w = w->next)
		1129	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		1130	}
		1131
		1132	/*****************************************************************************/
		1133
		1134	static WL childs [EV_PID_HASHSIZE];
707		1135
708	#ifndef _WIN32	1136	#ifndef _WIN32
709		1137
710	static struct ev_signal childev;	1138	static ev_signal childev;
		1139
		1140	#ifndef WIFCONTINUED
		1141	# define WIFCONTINUED(status) 0
		1142	#endif
		1143
		1144	void inline_speed
		1145	child_reap (EV_P_ int chain, int pid, int status)
		1146	{
		1147	ev_child *w;
		1148	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
		1149
		1150	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1151	{
		1152	if ((w->pid == pid || !w->pid)
		1153	&& (!traced || (w->flags & 1)))
		1154	{
		1155	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
		1156	w->rpid = pid;
		1157	w->rstatus = status;
		1158	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		1159	}
		1160	}
		1161	}
711		1162
712	#ifndef WCONTINUED	1163	#ifndef WCONTINUED
713	# define WCONTINUED 0	1164	# define WCONTINUED 0
714	#endif	1165	#endif
715		1166
716	static void	1167	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)	1168	childcb (EV_P_ ev_signal *sw, int revents)
733	{	1169	{
734	int pid, status;	1170	int pid, status;
735		1171
		1172	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
736	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	1173	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
737	{	1174	if (!WCONTINUED
		1175	|| errno != EINVAL
		1176	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		1177	return;
		1178
738	/* make sure we are called again until all childs have been reaped */	1179	/* 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 */	1180	/* 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);	1181	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
741		1182
742	child_reap (EV_A_ sw, pid, pid, status);	1183	child_reap (EV_A_ pid, pid, status);
		1184	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 */	1185	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
744	}
745	}	1186	}
746		1187
747	#endif	1188	#endif
748		1189
749	/*****************************************************************************/	1190	/*****************************************************************************/
…		…
775	{	1216	{
776	return EV_VERSION_MINOR;	1217	return EV_VERSION_MINOR;
777	}	1218	}
778		1219
779	/* return true if we are running with elevated privileges and should ignore env variables */	1220	/* return true if we are running with elevated privileges and should ignore env variables */
780	static int	1221	int inline_size
781	enable_secure (void)	1222	enable_secure (void)
782	{	1223	{
783	#ifdef _WIN32	1224	#ifdef _WIN32
784	return 0;	1225	return 0;
785	#else	1226	#else
…		…
821	}	1262	}
822		1263
823	unsigned int	1264	unsigned int
824	ev_embeddable_backends (void)	1265	ev_embeddable_backends (void)
825	{	1266	{
826	return EVBACKEND_EPOLL	1267	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
827	| EVBACKEND_KQUEUE	1268
828	| EVBACKEND_PORT;	1269	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1270	/* please fix it and tell me how to detect the fix */
		1271	flags &= ~EVBACKEND_EPOLL;
		1272
		1273	return flags;
829	}	1274	}
830		1275
831	unsigned int	1276	unsigned int
832	ev_backend (EV_P)	1277	ev_backend (EV_P)
833	{	1278	{
834	return backend;	1279	return backend;
835	}	1280	}
836		1281
837	static void	1282	unsigned int
		1283	ev_loop_count (EV_P)
		1284	{
		1285	return loop_count;
		1286	}
		1287
		1288	void
		1289	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1290	{
		1291	io_blocktime = interval;
		1292	}
		1293
		1294	void
		1295	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1296	{
		1297	timeout_blocktime = interval;
		1298	}
		1299
		1300	static void noinline
838	loop_init (EV_P_ unsigned int flags)	1301	loop_init (EV_P_ unsigned int flags)
839	{	1302	{
840	if (!backend)	1303	if (!backend)
841	{	1304	{
842	#if EV_USE_MONOTONIC	1305	#if EV_USE_MONOTONIC
…		…
845	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1308	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
846	have_monotonic = 1;	1309	have_monotonic = 1;
847	}	1310	}
848	#endif	1311	#endif
849		1312
850	ev_rt_now = ev_time ();	1313	ev_rt_now = ev_time ();
851	mn_now = get_clock ();	1314	mn_now = get_clock ();
852	now_floor = mn_now;	1315	now_floor = mn_now;
853	rtmn_diff = ev_rt_now - mn_now;	1316	rtmn_diff = ev_rt_now - mn_now;
		1317
		1318	io_blocktime = 0.;
		1319	timeout_blocktime = 0.;
		1320	backend = 0;
		1321	backend_fd = -1;
		1322	gotasync = 0;
		1323	#if EV_USE_INOTIFY
		1324	fs_fd = -2;
		1325	#endif
		1326
		1327	/* pid check not overridable via env */
		1328	#ifndef _WIN32
		1329	if (flags & EVFLAG_FORKCHECK)
		1330	curpid = getpid ();
		1331	#endif
854		1332
855	if (!(flags & EVFLAG_NOENV)	1333	if (!(flags & EVFLAG_NOENV)
856	&& !enable_secure ()	1334	&& !enable_secure ()
857	&& getenv ("LIBEV_FLAGS"))	1335	&& getenv ("LIBEV_FLAGS"))
858	flags = atoi (getenv ("LIBEV_FLAGS"));	1336	flags = atoi (getenv ("LIBEV_FLAGS"));
859		1337
860	if (!(flags & 0x0000ffffUL))	1338	if (!(flags & 0x0000ffffU))
861	flags |= ev_recommended_backends ();	1339	flags |= ev_recommended_backends ();
862		1340
863	backend = 0;
864	#if EV_USE_PORT	1341	#if EV_USE_PORT
865	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1342	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
866	#endif	1343	#endif
867	#if EV_USE_KQUEUE	1344	#if EV_USE_KQUEUE
868	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1345	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
875	#endif	1352	#endif
876	#if EV_USE_SELECT	1353	#if EV_USE_SELECT
877	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1354	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
878	#endif	1355	#endif
879		1356
880	ev_init (&sigev, sigcb);	1357	ev_init (&pipeev, pipecb);
881	ev_set_priority (&sigev, EV_MAXPRI);	1358	ev_set_priority (&pipeev, EV_MAXPRI);
882	}	1359	}
883	}	1360	}
884		1361
885	static void	1362	static void noinline
886	loop_destroy (EV_P)	1363	loop_destroy (EV_P)
887	{	1364	{
888	int i;	1365	int i;
		1366
		1367	if (ev_is_active (&pipeev))
		1368	{
		1369	ev_ref (EV_A); /* signal watcher */
		1370	ev_io_stop (EV_A_ &pipeev);
		1371
		1372	#if EV_USE_EVENTFD
		1373	if (evfd >= 0)
		1374	close (evfd);
		1375	#endif
		1376
		1377	if (evpipe [0] >= 0)
		1378	{
		1379	close (evpipe [0]);
		1380	close (evpipe [1]);
		1381	}
		1382	}
		1383
		1384	#if EV_USE_INOTIFY
		1385	if (fs_fd >= 0)
		1386	close (fs_fd);
		1387	#endif
		1388
		1389	if (backend_fd >= 0)
		1390	close (backend_fd);
889		1391
890	#if EV_USE_PORT	1392	#if EV_USE_PORT
891	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1393	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
892	#endif	1394	#endif
893	#if EV_USE_KQUEUE	1395	#if EV_USE_KQUEUE
…		…
902	#if EV_USE_SELECT	1404	#if EV_USE_SELECT
903	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1405	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
904	#endif	1406	#endif
905		1407
906	for (i = NUMPRI; i--; )	1408	for (i = NUMPRI; i--; )
		1409	{
907	array_free (pending, [i]);	1410	array_free (pending, [i]);
		1411	#if EV_IDLE_ENABLE
		1412	array_free (idle, [i]);
		1413	#endif
		1414	}
		1415
		1416	ev_free (anfds); anfdmax = 0;
908		1417
909	/* have to use the microsoft-never-gets-it-right macro */	1418	/* have to use the microsoft-never-gets-it-right macro */
910	array_free (fdchange, EMPTY0);	1419	array_free (fdchange, EMPTY);
911	array_free (timer, EMPTY0);	1420	array_free (timer, EMPTY);
912	#if EV_PERIODICS	1421	#if EV_PERIODIC_ENABLE
913	array_free (periodic, EMPTY0);	1422	array_free (periodic, EMPTY);
914	#endif	1423	#endif
		1424	#if EV_FORK_ENABLE
915	array_free (idle, EMPTY0);	1425	array_free (fork, EMPTY);
		1426	#endif
916	array_free (prepare, EMPTY0);	1427	array_free (prepare, EMPTY);
917	array_free (check, EMPTY0);	1428	array_free (check, EMPTY);
		1429	#if EV_ASYNC_ENABLE
		1430	array_free (async, EMPTY);
		1431	#endif
918		1432
919	backend = 0;	1433	backend = 0;
920	}	1434	}
921		1435
922	static void	1436	#if EV_USE_INOTIFY
		1437	void inline_size infy_fork (EV_P);
		1438	#endif
		1439
		1440	void inline_size
923	loop_fork (EV_P)	1441	loop_fork (EV_P)
924	{	1442	{
925	#if EV_USE_PORT	1443	#if EV_USE_PORT
926	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1444	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
927	#endif	1445	#endif
…		…
929	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1447	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
930	#endif	1448	#endif
931	#if EV_USE_EPOLL	1449	#if EV_USE_EPOLL
932	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1450	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
933	#endif	1451	#endif
		1452	#if EV_USE_INOTIFY
		1453	infy_fork (EV_A);
		1454	#endif
934		1455
935	if (ev_is_active (&sigev))	1456	if (ev_is_active (&pipeev))
936	{	1457	{
937	/* default loop */	1458	/* this "locks" the handlers against writing to the pipe */
		1459	/* while we modify the fd vars */
		1460	gotsig = 1;
		1461	#if EV_ASYNC_ENABLE
		1462	gotasync = 1;
		1463	#endif
938		1464
939	ev_ref (EV_A);	1465	ev_ref (EV_A);
940	ev_io_stop (EV_A_ &sigev);	1466	ev_io_stop (EV_A_ &pipeev);
		1467
		1468	#if EV_USE_EVENTFD
		1469	if (evfd >= 0)
		1470	close (evfd);
		1471	#endif
		1472
		1473	if (evpipe [0] >= 0)
		1474	{
941	close (sigpipe [0]);	1475	close (evpipe [0]);
942	close (sigpipe [1]);	1476	close (evpipe [1]);
		1477	}
943		1478
944	while (pipe (sigpipe))
945	syserr ("(libev) error creating pipe");
946
947	siginit (EV_A);	1479	evpipe_init (EV_A);
		1480	/* now iterate over everything, in case we missed something */
		1481	pipecb (EV_A_ &pipeev, EV_READ);
948	}	1482	}
949		1483
950	postfork = 0;	1484	postfork = 0;
951	}	1485	}
952		1486
953	#if EV_MULTIPLICITY	1487	#if EV_MULTIPLICITY
		1488
954	struct ev_loop *	1489	struct ev_loop *
955	ev_loop_new (unsigned int flags)	1490	ev_loop_new (unsigned int flags)
956	{	1491	{
957	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1492	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
958		1493
…		…
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	}
981		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	}
982	#endif	1524	#endif
		1525
		1526	void
		1527	ev_loop_verify (EV_P)
		1528	{
		1529	#if EV_VERIFY
		1530	int i;
		1531
		1532	checkheap (timers, timercnt);
		1533	#if EV_PERIODIC_ENABLE
		1534	checkheap (periodics, periodiccnt);
		1535	#endif
		1536
		1537	#if EV_IDLE_ENABLE
		1538	for (i = NUMPRI; i--; )
		1539	array_check ((W **)idles [i], idlecnt [i]);
		1540	#endif
		1541	#if EV_FORK_ENABLE
		1542	array_check ((W **)forks, forkcnt);
		1543	#endif
		1544	#if EV_ASYNC_ENABLE
		1545	array_check ((W **)asyncs, asynccnt);
		1546	#endif
		1547	array_check ((W **)prepares, preparecnt);
		1548	array_check ((W **)checks, checkcnt);
		1549	#endif
		1550	}
		1551
		1552	#endif /* multiplicity */
983		1553
984	#if EV_MULTIPLICITY	1554	#if EV_MULTIPLICITY
985	struct ev_loop *	1555	struct ev_loop *
986	ev_default_loop_init (unsigned int flags)	1556	ev_default_loop_init (unsigned int flags)
987	#else	1557	#else
988	int	1558	int
989	ev_default_loop (unsigned int flags)	1559	ev_default_loop (unsigned int flags)
990	#endif	1560	#endif
991	{	1561	{
992	if (sigpipe [0] == sigpipe [1])
993	if (pipe (sigpipe))
994	return 0;
995
996	if (!ev_default_loop_ptr)	1562	if (!ev_default_loop_ptr)
997	{	1563	{
998	#if EV_MULTIPLICITY	1564	#if EV_MULTIPLICITY
999	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1565	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1000	#else	1566	#else
…		…
1003		1569
1004	loop_init (EV_A_ flags);	1570	loop_init (EV_A_ flags);
1005		1571
1006	if (ev_backend (EV_A))	1572	if (ev_backend (EV_A))
1007	{	1573	{
1008	siginit (EV_A);
1009
1010	#ifndef _WIN32	1574	#ifndef _WIN32
1011	ev_signal_init (&childev, childcb, SIGCHLD);	1575	ev_signal_init (&childev, childcb, SIGCHLD);
1012	ev_set_priority (&childev, EV_MAXPRI);	1576	ev_set_priority (&childev, EV_MAXPRI);
1013	ev_signal_start (EV_A_ &childev);	1577	ev_signal_start (EV_A_ &childev);
1014	ev_unref (EV_A); /* child watcher should not keep loop alive */	1578	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1031	#ifndef _WIN32	1595	#ifndef _WIN32
1032	ev_ref (EV_A); /* child watcher */	1596	ev_ref (EV_A); /* child watcher */
1033	ev_signal_stop (EV_A_ &childev);	1597	ev_signal_stop (EV_A_ &childev);
1034	#endif	1598	#endif
1035		1599
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);	1600	loop_destroy (EV_A);
1043	}	1601	}
1044		1602
1045	void	1603	void
1046	ev_default_fork (void)	1604	ev_default_fork (void)
…		…
1048	#if EV_MULTIPLICITY	1606	#if EV_MULTIPLICITY
1049	struct ev_loop *loop = ev_default_loop_ptr;	1607	struct ev_loop *loop = ev_default_loop_ptr;
1050	#endif	1608	#endif
1051		1609
1052	if (backend)	1610	if (backend)
1053	postfork = 1;	1611	postfork = 1; /* must be in line with ev_loop_fork */
1054	}	1612	}
1055		1613
1056	/*****************************************************************************/	1614	/*****************************************************************************/
1057		1615
1058	static int	1616	void
1059	any_pending (EV_P)	1617	ev_invoke (EV_P_ void *w, int revents)
1060	{	1618	{
1061	int pri;	1619	EV_CB_INVOKE ((W)w, revents);
1062
1063	for (pri = NUMPRI; pri--; )
1064	if (pendingcnt [pri])
1065	return 1;
1066
1067	return 0;
1068	}	1620	}
1069		1621
1070	inline void	1622	void inline_speed
1071	call_pending (EV_P)	1623	call_pending (EV_P)
1072	{	1624	{
1073	int pri;	1625	int pri;
1074		1626
1075	for (pri = NUMPRI; pri--; )	1627	for (pri = NUMPRI; 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);
		1638	EV_FREQUENT_CHECK;
1084	}	1639	}
1085	}	1640	}
1086	}	1641	}
1087		1642
1088	inline void	1643	#if EV_IDLE_ENABLE
		1644	void inline_size
		1645	idle_reify (EV_P)
		1646	{
		1647	if (expect_false (idleall))
		1648	{
		1649	int pri;
		1650
		1651	for (pri = NUMPRI; pri--; )
		1652	{
		1653	if (pendingcnt [pri])
		1654	break;
		1655
		1656	if (idlecnt [pri])
		1657	{
		1658	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1659	break;
		1660	}
		1661	}
		1662	}
		1663	}
		1664	#endif
		1665
		1666	void inline_size
1089	timers_reify (EV_P)	1667	timers_reify (EV_P)
1090	{	1668	{
		1669	EV_FREQUENT_CHECK;
		1670
1091	while (timercnt && ((WT)timers [0])->at <= mn_now)	1671	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1092	{	1672	{
1093	struct ev_timer *w = timers [0];	1673	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1094		1674
1095	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1675	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1096		1676
1097	/* first reschedule or stop timer */	1677	/* first reschedule or stop timer */
1098	if (w->repeat)	1678	if (w->repeat)
1099	{	1679	{
		1680	ev_at (w) += w->repeat;
		1681	if (ev_at (w) < mn_now)
		1682	ev_at (w) = mn_now;
		1683
1100	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1684	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1101		1685
1102	((WT)w)->at += w->repeat;	1686	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);	1687	downheap (timers, timercnt, HEAP0);
1107	}	1688	}
1108	else	1689	else
1109	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1690	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1110		1691
		1692	EV_FREQUENT_CHECK;
1111	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1693	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1112	}	1694	}
1113	}	1695	}
1114		1696
1115	#if EV_PERIODICS	1697	#if EV_PERIODIC_ENABLE
1116	inline void	1698	void inline_size
1117	periodics_reify (EV_P)	1699	periodics_reify (EV_P)
1118	{	1700	{
		1701	EV_FREQUENT_CHECK;
		1702
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);
1131	}	1718	}
1132	else if (w->interval)	1719	else if (w->interval)
1133	{	1720	{
1134	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1721	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));	1722	/* if next trigger time is not sufficiently in the future, put it there */
		1723	/* this might happen because of floating point inexactness */
		1724	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1725	{
		1726	ev_at (w) += w->interval;
		1727
		1728	/* if interval is unreasonably low we might still have a time in the past */
		1729	/* so correct this. this will make the periodic very inexact, but the user */
		1730	/* has effectively asked to get triggered more often than possible */
		1731	if (ev_at (w) < ev_rt_now)
		1732	ev_at (w) = ev_rt_now;
		1733	}
		1734
		1735	ANHE_at_cache (periodics [HEAP0]);
1136	downheap ((WT *)periodics, periodiccnt, 0);	1736	downheap (periodics, periodiccnt, HEAP0);
1137	}	1737	}
1138	else	1738	else
1139	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1739	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1140		1740
		1741	EV_FREQUENT_CHECK;
1141	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1742	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1142	}	1743	}
1143	}	1744	}
1144		1745
1145	static void	1746	static void noinline
1146	periodics_reschedule (EV_P)	1747	periodics_reschedule (EV_P)
1147	{	1748	{
1148	int i;	1749	int i;
1149		1750
1150	/* adjust periodics after time jump */	1751	/* adjust periodics after time jump */
1151	for (i = 0; i < periodiccnt; ++i)	1752	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1152	{	1753	{
1153	struct ev_periodic *w = periodics [i];	1754	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1154		1755
1155	if (w->reschedule_cb)	1756	if (w->reschedule_cb)
1156	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1757	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1157	else if (w->interval)	1758	else if (w->interval)
1158	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1759	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1760
		1761	ANHE_at_cache (periodics [i]);
		1762	}
		1763
		1764	reheap (periodics, periodiccnt);
		1765	}
		1766	#endif
		1767
		1768	void inline_speed
		1769	time_update (EV_P_ ev_tstamp max_block)
		1770	{
		1771	int i;
		1772
		1773	#if EV_USE_MONOTONIC
		1774	if (expect_true (have_monotonic))
1159	}	1775	{
		1776	ev_tstamp odiff = rtmn_diff;
1160		1777
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 ();	1778	mn_now = get_clock ();
1171		1779
		1780	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1781	/* interpolate in the meantime */
1172	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1782	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1173	{	1783	{
1174	ev_rt_now = rtmn_diff + mn_now;	1784	ev_rt_now = rtmn_diff + mn_now;
1175	return 0;	1785	return;
1176	}	1786	}
1177	else	1787
1178	{
1179	now_floor = mn_now;	1788	now_floor = mn_now;
1180	ev_rt_now = ev_time ();	1789	ev_rt_now = ev_time ();
1181	return 1;
1182	}
1183	}
1184		1790
1185	inline void	1791	/* loop a few times, before making important decisions.
1186	time_update (EV_P)	1792	* on the choice of "4": one iteration isn't enough,
1187	{	1793	* in case we get preempted during the calls to
1188	int i;	1794	* ev_time and get_clock. a second call is almost guaranteed
1189		1795	* to succeed in that case, though. and looping a few more times
1190	#if EV_USE_MONOTONIC	1796	* doesn't hurt either as we only do this on time-jumps or
1191	if (expect_true (have_monotonic))	1797	* in the unlikely event of having been preempted here.
1192	{	1798	*/
1193	if (time_update_monotonic (EV_A))	1799	for (i = 4; --i; )
1194	{	1800	{
1195	ev_tstamp odiff = rtmn_diff;	1801	rtmn_diff = ev_rt_now - mn_now;
1196		1802
1197	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1803	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
		1804	return; /* all is well */
		1805
		1806	ev_rt_now = ev_time ();
		1807	mn_now = get_clock ();
		1808	now_floor = mn_now;
		1809	}
		1810
		1811	# if EV_PERIODIC_ENABLE
		1812	periodics_reschedule (EV_A);
		1813	# endif
		1814	/* no timer adjustment, as the monotonic clock doesn't jump */
		1815	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1816	}
		1817	else
		1818	#endif
		1819	{
		1820	ev_rt_now = ev_time ();
		1821
		1822	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1823	{
		1824	#if EV_PERIODIC_ENABLE
		1825	periodics_reschedule (EV_A);
		1826	#endif
		1827	/* adjust timers. this is easy, as the offset is the same for all of them */
		1828	for (i = 0; i < timercnt; ++i)
1198	{	1829	{
1199	rtmn_diff = ev_rt_now - mn_now;	1830	ANHE *he = timers + i + HEAP0;
1200		1831	ANHE_w (*he)->at += ev_rt_now - mn_now;
1201	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1832	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	}	1833	}
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	}	1834	}
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		1835
1232	mn_now = ev_rt_now;	1836	mn_now = ev_rt_now;
1233	}	1837	}
1234	}	1838	}
1235		1839
…		…
1248	static int loop_done;	1852	static int loop_done;
1249		1853
1250	void	1854	void
1251	ev_loop (EV_P_ int flags)	1855	ev_loop (EV_P_ int flags)
1252	{	1856	{
1253	double block;	1857	loop_done = EVUNLOOP_CANCEL;
1254	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
1255		1858
1256	while (activecnt)	1859	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1860
		1861	do
1257	{	1862	{
		1863	#if EV_VERIFY >= 2
		1864	ev_loop_verify (EV_A);
		1865	#endif
		1866
		1867	#ifndef _WIN32
		1868	if (expect_false (curpid)) /* penalise the forking check even more */
		1869	if (expect_false (getpid () != curpid))
		1870	{
		1871	curpid = getpid ();
		1872	postfork = 1;
		1873	}
		1874	#endif
		1875
		1876	#if EV_FORK_ENABLE
		1877	/* we might have forked, so queue fork handlers */
		1878	if (expect_false (postfork))
		1879	if (forkcnt)
		1880	{
		1881	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1882	call_pending (EV_A);
		1883	}
		1884	#endif
		1885
1258	/* queue check watchers (and execute them) */	1886	/* queue prepare watchers (and execute them) */
1259	if (expect_false (preparecnt))	1887	if (expect_false (preparecnt))
1260	{	1888	{
1261	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1889	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1262	call_pending (EV_A);	1890	call_pending (EV_A);
1263	}	1891	}
1264		1892
		1893	if (expect_false (!activecnt))
		1894	break;
		1895
1265	/* we might have forked, so reify kernel state if necessary */	1896	/* we might have forked, so reify kernel state if necessary */
1266	if (expect_false (postfork))	1897	if (expect_false (postfork))
1267	loop_fork (EV_A);	1898	loop_fork (EV_A);
1268		1899
1269	/* update fd-related kernel structures */	1900	/* update fd-related kernel structures */
1270	fd_reify (EV_A);	1901	fd_reify (EV_A);
1271		1902
1272	/* calculate blocking time */	1903	/* calculate blocking time */
		1904	{
		1905	ev_tstamp waittime = 0.;
		1906	ev_tstamp sleeptime = 0.;
1273		1907
1274	/* we only need this for !monotonic clock or timers, but as we basically	1908	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1275	always have timers, we just calculate it always */
1276	#if EV_USE_MONOTONIC
1277	if (expect_true (have_monotonic))
1278	time_update_monotonic (EV_A);
1279	else
1280	#endif
1281	{	1909	{
1282	ev_rt_now = ev_time ();	1910	/* update time to cancel out callback processing overhead */
1283	mn_now = ev_rt_now;	1911	time_update (EV_A_ 1e100);
1284	}
1285		1912
1286	if (flags & EVLOOP_NONBLOCK || idlecnt)
1287	block = 0.;
1288	else
1289	{
1290	block = MAX_BLOCKTIME;	1913	waittime = MAX_BLOCKTIME;
1291		1914
1292	if (timercnt)	1915	if (timercnt)
1293	{	1916	{
1294	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1917	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1295	if (block > to) block = to;	1918	if (waittime > to) waittime = to;
1296	}	1919	}
1297		1920
1298	#if EV_PERIODICS	1921	#if EV_PERIODIC_ENABLE
1299	if (periodiccnt)	1922	if (periodiccnt)
1300	{	1923	{
1301	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1924	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1302	if (block > to) block = to;	1925	if (waittime > to) waittime = to;
1303	}	1926	}
1304	#endif	1927	#endif
1305		1928
1306	if (expect_false (block < 0.)) block = 0.;	1929	if (expect_false (waittime < timeout_blocktime))
		1930	waittime = timeout_blocktime;
		1931
		1932	sleeptime = waittime - backend_fudge;
		1933
		1934	if (expect_true (sleeptime > io_blocktime))
		1935	sleeptime = io_blocktime;
		1936
		1937	if (sleeptime)
		1938	{
		1939	ev_sleep (sleeptime);
		1940	waittime -= sleeptime;
		1941	}
1307	}	1942	}
1308		1943
		1944	++loop_count;
1309	backend_poll (EV_A_ block);	1945	backend_poll (EV_A_ waittime);
1310		1946
1311	/* update ev_rt_now, do magic */	1947	/* update ev_rt_now, do magic */
1312	time_update (EV_A);	1948	time_update (EV_A_ waittime + sleeptime);
		1949	}
1313		1950
1314	/* queue pending timers and reschedule them */	1951	/* queue pending timers and reschedule them */
1315	timers_reify (EV_A); /* relative timers called last */	1952	timers_reify (EV_A); /* relative timers called last */
1316	#if EV_PERIODICS	1953	#if EV_PERIODIC_ENABLE
1317	periodics_reify (EV_A); /* absolute timers called first */	1954	periodics_reify (EV_A); /* absolute timers called first */
1318	#endif	1955	#endif
1319		1956
		1957	#if EV_IDLE_ENABLE
1320	/* queue idle watchers unless io or timers are pending */	1958	/* queue idle watchers unless other events are pending */
1321	if (idlecnt && !any_pending (EV_A))	1959	idle_reify (EV_A);
1322	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1960	#endif
1323		1961
1324	/* queue check watchers, to be executed first */	1962	/* queue check watchers, to be executed first */
1325	if (expect_false (checkcnt))	1963	if (expect_false (checkcnt))
1326	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1964	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1327		1965
1328	call_pending (EV_A);	1966	call_pending (EV_A);
1329
1330	if (expect_false (loop_done))
1331	break;
1332	}	1967	}
		1968	while (expect_true (
		1969	activecnt
		1970	&& !loop_done
		1971	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		1972	));
1333		1973
1334	if (loop_done != 2)	1974	if (loop_done == EVUNLOOP_ONE)
1335	loop_done = 0;	1975	loop_done = EVUNLOOP_CANCEL;
1336	}	1976	}
1337		1977
1338	void	1978	void
1339	ev_unloop (EV_P_ int how)	1979	ev_unloop (EV_P_ int how)
1340	{	1980	{
1341	loop_done = how;	1981	loop_done = how;
1342	}	1982	}
1343		1983
1344	/*****************************************************************************/	1984	/*****************************************************************************/
1345		1985
1346	inline void	1986	void inline_size
1347	wlist_add (WL *head, WL elem)	1987	wlist_add (WL *head, WL elem)
1348	{	1988	{
1349	elem->next = *head;	1989	elem->next = *head;
1350	*head = elem;	1990	*head = elem;
1351	}	1991	}
1352		1992
1353	inline void	1993	void inline_size
1354	wlist_del (WL *head, WL elem)	1994	wlist_del (WL *head, WL elem)
1355	{	1995	{
1356	while (*head)	1996	while (*head)
1357	{	1997	{
1358	if (*head == elem)	1998	if (*head == elem)
…		…
1363		2003
1364	head = &(*head)->next;	2004	head = &(*head)->next;
1365	}	2005	}
1366	}	2006	}
1367		2007
1368	inline void	2008	void inline_speed
1369	ev_clear_pending (EV_P_ W w)	2009	clear_pending (EV_P_ W w)
1370	{	2010	{
1371	if (w->pending)	2011	if (w->pending)
1372	{	2012	{
1373	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2013	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1374	w->pending = 0;	2014	w->pending = 0;
1375	}	2015	}
1376	}	2016	}
1377		2017
1378	inline void	2018	int
		2019	ev_clear_pending (EV_P_ void *w)
		2020	{
		2021	W w_ = (W)w;
		2022	int pending = w_->pending;
		2023
		2024	if (expect_true (pending))
		2025	{
		2026	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2027	w_->pending = 0;
		2028	p->w = 0;
		2029	return p->events;
		2030	}
		2031	else
		2032	return 0;
		2033	}
		2034
		2035	void inline_size
		2036	pri_adjust (EV_P_ W w)
		2037	{
		2038	int pri = w->priority;
		2039	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		2040	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		2041	w->priority = pri;
		2042	}
		2043
		2044	void inline_speed
1379	ev_start (EV_P_ W w, int active)	2045	ev_start (EV_P_ W w, int active)
1380	{	2046	{
1381	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	2047	pri_adjust (EV_A_ w);
1382	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1383
1384	w->active = active;	2048	w->active = active;
1385	ev_ref (EV_A);	2049	ev_ref (EV_A);
1386	}	2050	}
1387		2051
1388	inline void	2052	void inline_size
1389	ev_stop (EV_P_ W w)	2053	ev_stop (EV_P_ W w)
1390	{	2054	{
1391	ev_unref (EV_A);	2055	ev_unref (EV_A);
1392	w->active = 0;	2056	w->active = 0;
1393	}	2057	}
1394		2058
1395	/*****************************************************************************/	2059	/*****************************************************************************/
1396		2060
1397	void	2061	void noinline
1398	ev_io_start (EV_P_ struct ev_io *w)	2062	ev_io_start (EV_P_ ev_io *w)
1399	{	2063	{
1400	int fd = w->fd;	2064	int fd = w->fd;
1401		2065
1402	if (expect_false (ev_is_active (w)))	2066	if (expect_false (ev_is_active (w)))
1403	return;	2067	return;
1404		2068
1405	assert (("ev_io_start called with negative fd", fd >= 0));	2069	assert (("ev_io_start called with negative fd", fd >= 0));
1406		2070
		2071	EV_FREQUENT_CHECK;
		2072
1407	ev_start (EV_A_ (W)w, 1);	2073	ev_start (EV_A_ (W)w, 1);
1408	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2074	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1409	wlist_add ((WL *)&anfds[fd].head, (WL)w);	2075	wlist_add (&anfds[fd].head, (WL)w);
1410		2076
1411	fd_change (EV_A_ fd);	2077	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1412	}	2078	w->events &= ~EV_IOFDSET;
1413		2079
1414	void	2080	EV_FREQUENT_CHECK;
		2081	}
		2082
		2083	void noinline
1415	ev_io_stop (EV_P_ struct ev_io *w)	2084	ev_io_stop (EV_P_ ev_io *w)
1416	{	2085	{
1417	ev_clear_pending (EV_A_ (W)w);	2086	clear_pending (EV_A_ (W)w);
1418	if (expect_false (!ev_is_active (w)))	2087	if (expect_false (!ev_is_active (w)))
1419	return;	2088	return;
1420		2089
1421	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2090	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1422		2091
		2092	EV_FREQUENT_CHECK;
		2093
1423	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	2094	wlist_del (&anfds[w->fd].head, (WL)w);
1424	ev_stop (EV_A_ (W)w);	2095	ev_stop (EV_A_ (W)w);
1425		2096
1426	fd_change (EV_A_ w->fd);	2097	fd_change (EV_A_ w->fd, 1);
1427	}
1428		2098
1429	void	2099	EV_FREQUENT_CHECK;
		2100	}
		2101
		2102	void noinline
1430	ev_timer_start (EV_P_ struct ev_timer *w)	2103	ev_timer_start (EV_P_ ev_timer *w)
1431	{	2104	{
1432	if (expect_false (ev_is_active (w)))	2105	if (expect_false (ev_is_active (w)))
1433	return;	2106	return;
1434		2107
1435	((WT)w)->at += mn_now;	2108	ev_at (w) += mn_now;
1436		2109
1437	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2110	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1438		2111
		2112	EV_FREQUENT_CHECK;
		2113
		2114	++timercnt;
1439	ev_start (EV_A_ (W)w, ++timercnt);	2115	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1440	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);	2116	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1441	timers [timercnt - 1] = w;	2117	ANHE_w (timers [ev_active (w)]) = (WT)w;
1442	upheap ((WT *)timers, timercnt - 1);	2118	ANHE_at_cache (timers [ev_active (w)]);
		2119	upheap (timers, ev_active (w));
1443		2120
		2121	EV_FREQUENT_CHECK;
		2122
1444	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	2123	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1445	}	2124	}
1446		2125
1447	void	2126	void noinline
1448	ev_timer_stop (EV_P_ struct ev_timer *w)	2127	ev_timer_stop (EV_P_ ev_timer *w)
1449	{	2128	{
1450	ev_clear_pending (EV_A_ (W)w);	2129	clear_pending (EV_A_ (W)w);
1451	if (expect_false (!ev_is_active (w)))	2130	if (expect_false (!ev_is_active (w)))
1452	return;	2131	return;
1453		2132
		2133	EV_FREQUENT_CHECK;
		2134
		2135	{
		2136	int active = ev_active (w);
		2137
1454	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	2138	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1455		2139
		2140	--timercnt;
		2141
1456	if (expect_true (((W)w)->active < timercnt--))	2142	if (expect_true (active < timercnt + HEAP0))
1457	{	2143	{
1458	timers [((W)w)->active - 1] = timers [timercnt];	2144	timers [active] = timers [timercnt + HEAP0];
1459	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	2145	adjustheap (timers, timercnt, active);
1460	}	2146	}
		2147	}
1461		2148
1462	((WT)w)->at -= mn_now;	2149	EV_FREQUENT_CHECK;
		2150
		2151	ev_at (w) -= mn_now;
1463		2152
1464	ev_stop (EV_A_ (W)w);	2153	ev_stop (EV_A_ (W)w);
1465	}	2154	}
1466		2155
1467	void	2156	void noinline
1468	ev_timer_again (EV_P_ struct ev_timer *w)	2157	ev_timer_again (EV_P_ ev_timer *w)
1469	{	2158	{
		2159	EV_FREQUENT_CHECK;
		2160
1470	if (ev_is_active (w))	2161	if (ev_is_active (w))
1471	{	2162	{
1472	if (w->repeat)	2163	if (w->repeat)
1473	{	2164	{
1474	((WT)w)->at = mn_now + w->repeat;	2165	ev_at (w) = mn_now + w->repeat;
		2166	ANHE_at_cache (timers [ev_active (w)]);
1475	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	2167	adjustheap (timers, timercnt, ev_active (w));
1476	}	2168	}
1477	else	2169	else
1478	ev_timer_stop (EV_A_ w);	2170	ev_timer_stop (EV_A_ w);
1479	}	2171	}
1480	else if (w->repeat)	2172	else if (w->repeat)
1481	{	2173	{
1482	w->at = w->repeat;	2174	ev_at (w) = w->repeat;
1483	ev_timer_start (EV_A_ w);	2175	ev_timer_start (EV_A_ w);
1484	}	2176	}
1485	}
1486		2177
		2178	EV_FREQUENT_CHECK;
		2179	}
		2180
1487	#if EV_PERIODICS	2181	#if EV_PERIODIC_ENABLE
1488	void	2182	void noinline
1489	ev_periodic_start (EV_P_ struct ev_periodic *w)	2183	ev_periodic_start (EV_P_ ev_periodic *w)
1490	{	2184	{
1491	if (expect_false (ev_is_active (w)))	2185	if (expect_false (ev_is_active (w)))
1492	return;	2186	return;
1493		2187
1494	if (w->reschedule_cb)	2188	if (w->reschedule_cb)
1495	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2189	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1496	else if (w->interval)	2190	else if (w->interval)
1497	{	2191	{
1498	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2192	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1499	/* this formula differs from the one in periodic_reify because we do not always round up */	2193	/* this formula differs from the one in periodic_reify because we do not always round up */
1500	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	2194	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1501	}	2195	}
		2196	else
		2197	ev_at (w) = w->offset;
1502		2198
		2199	EV_FREQUENT_CHECK;
		2200
		2201	++periodiccnt;
1503	ev_start (EV_A_ (W)w, ++periodiccnt);	2202	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1504	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	2203	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1505	periodics [periodiccnt - 1] = w;	2204	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1506	upheap ((WT *)periodics, periodiccnt - 1);	2205	ANHE_at_cache (periodics [ev_active (w)]);
		2206	upheap (periodics, ev_active (w));
1507		2207
		2208	EV_FREQUENT_CHECK;
		2209
1508	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	2210	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1509	}	2211	}
1510		2212
1511	void	2213	void noinline
1512	ev_periodic_stop (EV_P_ struct ev_periodic *w)	2214	ev_periodic_stop (EV_P_ ev_periodic *w)
1513	{	2215	{
1514	ev_clear_pending (EV_A_ (W)w);	2216	clear_pending (EV_A_ (W)w);
1515	if (expect_false (!ev_is_active (w)))	2217	if (expect_false (!ev_is_active (w)))
1516	return;	2218	return;
1517		2219
		2220	EV_FREQUENT_CHECK;
		2221
		2222	{
		2223	int active = ev_active (w);
		2224
1518	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	2225	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1519		2226
		2227	--periodiccnt;
		2228
1520	if (expect_true (((W)w)->active < periodiccnt--))	2229	if (expect_true (active < periodiccnt + HEAP0))
1521	{	2230	{
1522	periodics [((W)w)->active - 1] = periodics [periodiccnt];	2231	periodics [active] = periodics [periodiccnt + HEAP0];
1523	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	2232	adjustheap (periodics, periodiccnt, active);
1524	}	2233	}
		2234	}
		2235
		2236	EV_FREQUENT_CHECK;
1525		2237
1526	ev_stop (EV_A_ (W)w);	2238	ev_stop (EV_A_ (W)w);
1527	}	2239	}
1528		2240
1529	void	2241	void noinline
1530	ev_periodic_again (EV_P_ struct ev_periodic *w)	2242	ev_periodic_again (EV_P_ ev_periodic *w)
1531	{	2243	{
1532	/* TODO: use adjustheap and recalculation */	2244	/* TODO: use adjustheap and recalculation */
1533	ev_periodic_stop (EV_A_ w);	2245	ev_periodic_stop (EV_A_ w);
1534	ev_periodic_start (EV_A_ w);	2246	ev_periodic_start (EV_A_ w);
1535	}	2247	}
1536	#endif	2248	#endif
1537		2249
1538	void	2250	#ifndef SA_RESTART
1539	ev_idle_start (EV_P_ struct ev_idle *w)	2251	# define SA_RESTART 0
		2252	#endif
		2253
		2254	void noinline
		2255	ev_signal_start (EV_P_ ev_signal *w)
1540	{	2256	{
		2257	#if EV_MULTIPLICITY
		2258	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		2259	#endif
1541	if (expect_false (ev_is_active (w)))	2260	if (expect_false (ev_is_active (w)))
1542	return;	2261	return;
1543		2262
1544	ev_start (EV_A_ (W)w, ++idlecnt);
1545	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1546	idles [idlecnt - 1] = w;
1547	}
1548
1549	void
1550	ev_idle_stop (EV_P_ struct ev_idle *w)
1551	{
1552	ev_clear_pending (EV_A_ (W)w);
1553	if (expect_false (!ev_is_active (w)))
1554	return;
1555
1556	idles [((W)w)->active - 1] = idles [--idlecnt];
1557	ev_stop (EV_A_ (W)w);
1558	}
1559
1560	void
1561	ev_prepare_start (EV_P_ struct ev_prepare *w)
1562	{
1563	if (expect_false (ev_is_active (w)))
1564	return;
1565
1566	ev_start (EV_A_ (W)w, ++preparecnt);
1567	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1568	prepares [preparecnt - 1] = w;
1569	}
1570
1571	void
1572	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1573	{
1574	ev_clear_pending (EV_A_ (W)w);
1575	if (expect_false (!ev_is_active (w)))
1576	return;
1577
1578	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1579	ev_stop (EV_A_ (W)w);
1580	}
1581
1582	void
1583	ev_check_start (EV_P_ struct ev_check *w)
1584	{
1585	if (expect_false (ev_is_active (w)))
1586	return;
1587
1588	ev_start (EV_A_ (W)w, ++checkcnt);
1589	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1590	checks [checkcnt - 1] = w;
1591	}
1592
1593	void
1594	ev_check_stop (EV_P_ struct ev_check *w)
1595	{
1596	ev_clear_pending (EV_A_ (W)w);
1597	if (expect_false (!ev_is_active (w)))
1598	return;
1599
1600	checks [((W)w)->active - 1] = checks [--checkcnt];
1601	ev_stop (EV_A_ (W)w);
1602	}
1603
1604	#ifndef SA_RESTART
1605	# define SA_RESTART 0
1606	#endif
1607
1608	void
1609	ev_signal_start (EV_P_ struct ev_signal *w)
1610	{
1611	#if EV_MULTIPLICITY
1612	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1613	#endif
1614	if (expect_false (ev_is_active (w)))
1615	return;
1616
1617	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2263	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1618		2264
		2265	evpipe_init (EV_A);
		2266
		2267	EV_FREQUENT_CHECK;
		2268
		2269	{
		2270	#ifndef _WIN32
		2271	sigset_t full, prev;
		2272	sigfillset (&full);
		2273	sigprocmask (SIG_SETMASK, &full, &prev);
		2274	#endif
		2275
		2276	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		2277
		2278	#ifndef _WIN32
		2279	sigprocmask (SIG_SETMASK, &prev, 0);
		2280	#endif
		2281	}
		2282
1619	ev_start (EV_A_ (W)w, 1);	2283	ev_start (EV_A_ (W)w, 1);
1620	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1621	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2284	wlist_add (&signals [w->signum - 1].head, (WL)w);
1622		2285
1623	if (!((WL)w)->next)	2286	if (!((WL)w)->next)
1624	{	2287	{
1625	#if _WIN32	2288	#if _WIN32
1626	signal (w->signum, sighandler);	2289	signal (w->signum, ev_sighandler);
1627	#else	2290	#else
1628	struct sigaction sa;	2291	struct sigaction sa;
1629	sa.sa_handler = sighandler;	2292	sa.sa_handler = ev_sighandler;
1630	sigfillset (&sa.sa_mask);	2293	sigfillset (&sa.sa_mask);
1631	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2294	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1632	sigaction (w->signum, &sa, 0);	2295	sigaction (w->signum, &sa, 0);
1633	#endif	2296	#endif
1634	}	2297	}
1635	}
1636		2298
1637	void	2299	EV_FREQUENT_CHECK;
		2300	}
		2301
		2302	void noinline
1638	ev_signal_stop (EV_P_ struct ev_signal *w)	2303	ev_signal_stop (EV_P_ ev_signal *w)
1639	{	2304	{
1640	ev_clear_pending (EV_A_ (W)w);	2305	clear_pending (EV_A_ (W)w);
1641	if (expect_false (!ev_is_active (w)))	2306	if (expect_false (!ev_is_active (w)))
1642	return;	2307	return;
1643		2308
		2309	EV_FREQUENT_CHECK;
		2310
1644	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2311	wlist_del (&signals [w->signum - 1].head, (WL)w);
1645	ev_stop (EV_A_ (W)w);	2312	ev_stop (EV_A_ (W)w);
1646		2313
1647	if (!signals [w->signum - 1].head)	2314	if (!signals [w->signum - 1].head)
1648	signal (w->signum, SIG_DFL);	2315	signal (w->signum, SIG_DFL);
1649	}
1650		2316
		2317	EV_FREQUENT_CHECK;
		2318	}
		2319
1651	void	2320	void
1652	ev_child_start (EV_P_ struct ev_child *w)	2321	ev_child_start (EV_P_ ev_child *w)
1653	{	2322	{
1654	#if EV_MULTIPLICITY	2323	#if EV_MULTIPLICITY
1655	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2324	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1656	#endif	2325	#endif
1657	if (expect_false (ev_is_active (w)))	2326	if (expect_false (ev_is_active (w)))
1658	return;	2327	return;
1659		2328
		2329	EV_FREQUENT_CHECK;
		2330
1660	ev_start (EV_A_ (W)w, 1);	2331	ev_start (EV_A_ (W)w, 1);
1661	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2332	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1662	}
1663		2333
		2334	EV_FREQUENT_CHECK;
		2335	}
		2336
1664	void	2337	void
1665	ev_child_stop (EV_P_ struct ev_child *w)	2338	ev_child_stop (EV_P_ ev_child *w)
1666	{	2339	{
1667	ev_clear_pending (EV_A_ (W)w);	2340	clear_pending (EV_A_ (W)w);
1668	if (expect_false (!ev_is_active (w)))	2341	if (expect_false (!ev_is_active (w)))
1669	return;	2342	return;
1670		2343
		2344	EV_FREQUENT_CHECK;
		2345
1671	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2346	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1672	ev_stop (EV_A_ (W)w);	2347	ev_stop (EV_A_ (W)w);
1673	}
1674		2348
1675	#if EV_MULTIPLICITY	2349	EV_FREQUENT_CHECK;
		2350	}
		2351
		2352	#if EV_STAT_ENABLE
		2353
		2354	# ifdef _WIN32
		2355	# undef lstat
		2356	# define lstat(a,b) _stati64 (a,b)
		2357	# endif
		2358
		2359	#define DEF_STAT_INTERVAL 5.0074891
		2360	#define MIN_STAT_INTERVAL 0.1074891
		2361
		2362	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		2363
		2364	#if EV_USE_INOTIFY
		2365	# define EV_INOTIFY_BUFSIZE 8192
		2366
		2367	static void noinline
		2368	infy_add (EV_P_ ev_stat *w)
		2369	{
		2370	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);
		2371
		2372	if (w->wd < 0)
		2373	{
		2374	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		2375
		2376	/* monitor some parent directory for speedup hints */
		2377	/* note that exceeding the hardcoded limit is not a correctness issue, */
		2378	/* but an efficiency issue only */
		2379	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		2380	{
		2381	char path [4096];
		2382	strcpy (path, w->path);
		2383
		2384	do
		2385	{
		2386	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		2387	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		2388
		2389	char *pend = strrchr (path, '/');
		2390
		2391	if (!pend)
		2392	break; /* whoops, no '/', complain to your admin */
		2393
		2394	*pend = 0;
		2395	w->wd = inotify_add_watch (fs_fd, path, mask);
		2396	}
		2397	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		2398	}
		2399	}
		2400	else
		2401	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		2402
		2403	if (w->wd >= 0)
		2404	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2405	}
		2406
		2407	static void noinline
		2408	infy_del (EV_P_ ev_stat *w)
		2409	{
		2410	int slot;
		2411	int wd = w->wd;
		2412
		2413	if (wd < 0)
		2414	return;
		2415
		2416	w->wd = -2;
		2417	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		2418	wlist_del (&fs_hash [slot].head, (WL)w);
		2419
		2420	/* remove this watcher, if others are watching it, they will rearm */
		2421	inotify_rm_watch (fs_fd, wd);
		2422	}
		2423
		2424	static void noinline
		2425	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		2426	{
		2427	if (slot < 0)
		2428	/* overflow, need to check for all hahs slots */
		2429	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2430	infy_wd (EV_A_ slot, wd, ev);
		2431	else
		2432	{
		2433	WL w_;
		2434
		2435	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		2436	{
		2437	ev_stat *w = (ev_stat *)w_;
		2438	w_ = w_->next; /* lets us remove this watcher and all before it */
		2439
		2440	if (w->wd == wd || wd == -1)
		2441	{
		2442	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		2443	{
		2444	w->wd = -1;
		2445	infy_add (EV_A_ w); /* re-add, no matter what */
		2446	}
		2447
		2448	stat_timer_cb (EV_A_ &w->timer, 0);
		2449	}
		2450	}
		2451	}
		2452	}
		2453
1676	static void	2454	static void
1677	embed_cb (EV_P_ struct ev_io *io, int revents)	2455	infy_cb (EV_P_ ev_io *w, int revents)
1678	{	2456	{
1679	struct ev_embed *w = (struct ev_embed *)(((char *)io) - offsetof (struct ev_embed, io));	2457	char buf [EV_INOTIFY_BUFSIZE];
		2458	struct inotify_event *ev = (struct inotify_event *)buf;
		2459	int ofs;
		2460	int len = read (fs_fd, buf, sizeof (buf));
1680		2461
		2462	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2463	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2464	}
		2465
		2466	void inline_size
		2467	infy_init (EV_P)
		2468	{
		2469	if (fs_fd != -2)
		2470	return;
		2471
		2472	fs_fd = inotify_init ();
		2473
		2474	if (fs_fd >= 0)
		2475	{
		2476	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2477	ev_set_priority (&fs_w, EV_MAXPRI);
		2478	ev_io_start (EV_A_ &fs_w);
		2479	}
		2480	}
		2481
		2482	void inline_size
		2483	infy_fork (EV_P)
		2484	{
		2485	int slot;
		2486
		2487	if (fs_fd < 0)
		2488	return;
		2489
		2490	close (fs_fd);
		2491	fs_fd = inotify_init ();
		2492
		2493	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2494	{
		2495	WL w_ = fs_hash [slot].head;
		2496	fs_hash [slot].head = 0;
		2497
		2498	while (w_)
		2499	{
		2500	ev_stat *w = (ev_stat *)w_;
		2501	w_ = w_->next; /* lets us add this watcher */
		2502
		2503	w->wd = -1;
		2504
		2505	if (fs_fd >= 0)
		2506	infy_add (EV_A_ w); /* re-add, no matter what */
		2507	else
		2508	ev_timer_start (EV_A_ &w->timer);
		2509	}
		2510
		2511	}
		2512	}
		2513
		2514	#endif
		2515
		2516	void
		2517	ev_stat_stat (EV_P_ ev_stat *w)
		2518	{
		2519	if (lstat (w->path, &w->attr) < 0)
		2520	w->attr.st_nlink = 0;
		2521	else if (!w->attr.st_nlink)
		2522	w->attr.st_nlink = 1;
		2523	}
		2524
		2525	static void noinline
		2526	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2527	{
		2528	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2529
		2530	/* we copy this here each the time so that */
		2531	/* prev has the old value when the callback gets invoked */
		2532	w->prev = w->attr;
		2533	ev_stat_stat (EV_A_ w);
		2534
		2535	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2536	if (
		2537	w->prev.st_dev != w->attr.st_dev
		2538	|| w->prev.st_ino != w->attr.st_ino
		2539	|| w->prev.st_mode != w->attr.st_mode
		2540	|| w->prev.st_nlink != w->attr.st_nlink
		2541	|| w->prev.st_uid != w->attr.st_uid
		2542	|| w->prev.st_gid != w->attr.st_gid
		2543	|| w->prev.st_rdev != w->attr.st_rdev
		2544	|| w->prev.st_size != w->attr.st_size
		2545	|| w->prev.st_atime != w->attr.st_atime
		2546	|| w->prev.st_mtime != w->attr.st_mtime
		2547	|| w->prev.st_ctime != w->attr.st_ctime
		2548	) {
		2549	#if EV_USE_INOTIFY
		2550	infy_del (EV_A_ w);
		2551	infy_add (EV_A_ w);
		2552	ev_stat_stat (EV_A_ w); /* avoid race... */
		2553	#endif
		2554
1681	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2555	ev_feed_event (EV_A_ w, EV_STAT);
1682	ev_loop (w->loop, EVLOOP_NONBLOCK);	2556	}
1683	}	2557	}
1684		2558
1685	void	2559	void
1686	ev_embed_start (EV_P_ struct ev_embed *w)	2560	ev_stat_start (EV_P_ ev_stat *w)
1687	{	2561	{
1688	if (expect_false (ev_is_active (w)))	2562	if (expect_false (ev_is_active (w)))
1689	return;	2563	return;
1690		2564
1691	{	2565	/* since we use memcmp, we need to clear any padding data etc. */
1692	struct ev_loop *loop = w->loop;	2566	memset (&w->prev, 0, sizeof (ev_statdata));
1693	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2567	memset (&w->attr, 0, sizeof (ev_statdata));
1694	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1695	}
1696		2568
		2569	ev_stat_stat (EV_A_ w);
		2570
		2571	if (w->interval < MIN_STAT_INTERVAL)
		2572	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2573
		2574	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2575	ev_set_priority (&w->timer, ev_priority (w));
		2576
		2577	#if EV_USE_INOTIFY
		2578	infy_init (EV_A);
		2579
		2580	if (fs_fd >= 0)
		2581	infy_add (EV_A_ w);
		2582	else
		2583	#endif
1697	ev_io_start (EV_A_ &w->io);	2584	ev_timer_start (EV_A_ &w->timer);
		2585
1698	ev_start (EV_A_ (W)w, 1);	2586	ev_start (EV_A_ (W)w, 1);
1699	}
1700		2587
		2588	EV_FREQUENT_CHECK;
		2589	}
		2590
1701	void	2591	void
1702	ev_embed_stop (EV_P_ struct ev_embed *w)	2592	ev_stat_stop (EV_P_ ev_stat *w)
1703	{	2593	{
1704	ev_clear_pending (EV_A_ (W)w);	2594	clear_pending (EV_A_ (W)w);
1705	if (expect_false (!ev_is_active (w)))	2595	if (expect_false (!ev_is_active (w)))
1706	return;	2596	return;
1707		2597
		2598	EV_FREQUENT_CHECK;
		2599
		2600	#if EV_USE_INOTIFY
		2601	infy_del (EV_A_ w);
		2602	#endif
		2603	ev_timer_stop (EV_A_ &w->timer);
		2604
		2605	ev_stop (EV_A_ (W)w);
		2606
		2607	EV_FREQUENT_CHECK;
		2608	}
		2609	#endif
		2610
		2611	#if EV_IDLE_ENABLE
		2612	void
		2613	ev_idle_start (EV_P_ ev_idle *w)
		2614	{
		2615	if (expect_false (ev_is_active (w)))
		2616	return;
		2617
		2618	pri_adjust (EV_A_ (W)w);
		2619
		2620	EV_FREQUENT_CHECK;
		2621
		2622	{
		2623	int active = ++idlecnt [ABSPRI (w)];
		2624
		2625	++idleall;
		2626	ev_start (EV_A_ (W)w, active);
		2627
		2628	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2629	idles [ABSPRI (w)][active - 1] = w;
		2630	}
		2631
		2632	EV_FREQUENT_CHECK;
		2633	}
		2634
		2635	void
		2636	ev_idle_stop (EV_P_ ev_idle *w)
		2637	{
		2638	clear_pending (EV_A_ (W)w);
		2639	if (expect_false (!ev_is_active (w)))
		2640	return;
		2641
		2642	EV_FREQUENT_CHECK;
		2643
		2644	{
		2645	int active = ev_active (w);
		2646
		2647	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2648	ev_active (idles [ABSPRI (w)][active - 1]) = active;
		2649
		2650	ev_stop (EV_A_ (W)w);
		2651	--idleall;
		2652	}
		2653
		2654	EV_FREQUENT_CHECK;
		2655	}
		2656	#endif
		2657
		2658	void
		2659	ev_prepare_start (EV_P_ ev_prepare *w)
		2660	{
		2661	if (expect_false (ev_is_active (w)))
		2662	return;
		2663
		2664	EV_FREQUENT_CHECK;
		2665
		2666	ev_start (EV_A_ (W)w, ++preparecnt);
		2667	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2668	prepares [preparecnt - 1] = w;
		2669
		2670	EV_FREQUENT_CHECK;
		2671	}
		2672
		2673	void
		2674	ev_prepare_stop (EV_P_ ev_prepare *w)
		2675	{
		2676	clear_pending (EV_A_ (W)w);
		2677	if (expect_false (!ev_is_active (w)))
		2678	return;
		2679
		2680	EV_FREQUENT_CHECK;
		2681
		2682	{
		2683	int active = ev_active (w);
		2684
		2685	prepares [active - 1] = prepares [--preparecnt];
		2686	ev_active (prepares [active - 1]) = active;
		2687	}
		2688
		2689	ev_stop (EV_A_ (W)w);
		2690
		2691	EV_FREQUENT_CHECK;
		2692	}
		2693
		2694	void
		2695	ev_check_start (EV_P_ ev_check *w)
		2696	{
		2697	if (expect_false (ev_is_active (w)))
		2698	return;
		2699
		2700	EV_FREQUENT_CHECK;
		2701
		2702	ev_start (EV_A_ (W)w, ++checkcnt);
		2703	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2704	checks [checkcnt - 1] = w;
		2705
		2706	EV_FREQUENT_CHECK;
		2707	}
		2708
		2709	void
		2710	ev_check_stop (EV_P_ ev_check *w)
		2711	{
		2712	clear_pending (EV_A_ (W)w);
		2713	if (expect_false (!ev_is_active (w)))
		2714	return;
		2715
		2716	EV_FREQUENT_CHECK;
		2717
		2718	{
		2719	int active = ev_active (w);
		2720
		2721	checks [active - 1] = checks [--checkcnt];
		2722	ev_active (checks [active - 1]) = active;
		2723	}
		2724
		2725	ev_stop (EV_A_ (W)w);
		2726
		2727	EV_FREQUENT_CHECK;
		2728	}
		2729
		2730	#if EV_EMBED_ENABLE
		2731	void noinline
		2732	ev_embed_sweep (EV_P_ ev_embed *w)
		2733	{
		2734	ev_loop (w->other, EVLOOP_NONBLOCK);
		2735	}
		2736
		2737	static void
		2738	embed_io_cb (EV_P_ ev_io *io, int revents)
		2739	{
		2740	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2741
		2742	if (ev_cb (w))
		2743	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2744	else
		2745	ev_loop (w->other, EVLOOP_NONBLOCK);
		2746	}
		2747
		2748	static void
		2749	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2750	{
		2751	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2752
		2753	{
		2754	struct ev_loop *loop = w->other;
		2755
		2756	while (fdchangecnt)
		2757	{
		2758	fd_reify (EV_A);
		2759	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2760	}
		2761	}
		2762	}
		2763
		2764	#if 0
		2765	static void
		2766	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2767	{
		2768	ev_idle_stop (EV_A_ idle);
		2769	}
		2770	#endif
		2771
		2772	void
		2773	ev_embed_start (EV_P_ ev_embed *w)
		2774	{
		2775	if (expect_false (ev_is_active (w)))
		2776	return;
		2777
		2778	{
		2779	struct ev_loop *loop = w->other;
		2780	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2781	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
		2782	}
		2783
		2784	EV_FREQUENT_CHECK;
		2785
		2786	ev_set_priority (&w->io, ev_priority (w));
		2787	ev_io_start (EV_A_ &w->io);
		2788
		2789	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2790	ev_set_priority (&w->prepare, EV_MINPRI);
		2791	ev_prepare_start (EV_A_ &w->prepare);
		2792
		2793	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2794
		2795	ev_start (EV_A_ (W)w, 1);
		2796
		2797	EV_FREQUENT_CHECK;
		2798	}
		2799
		2800	void
		2801	ev_embed_stop (EV_P_ ev_embed *w)
		2802	{
		2803	clear_pending (EV_A_ (W)w);
		2804	if (expect_false (!ev_is_active (w)))
		2805	return;
		2806
		2807	EV_FREQUENT_CHECK;
		2808
1708	ev_io_stop (EV_A_ &w->io);	2809	ev_io_stop (EV_A_ &w->io);
		2810	ev_prepare_stop (EV_A_ &w->prepare);
		2811
1709	ev_stop (EV_A_ (W)w);	2812	ev_stop (EV_A_ (W)w);
		2813
		2814	EV_FREQUENT_CHECK;
		2815	}
		2816	#endif
		2817
		2818	#if EV_FORK_ENABLE
		2819	void
		2820	ev_fork_start (EV_P_ ev_fork *w)
		2821	{
		2822	if (expect_false (ev_is_active (w)))
		2823	return;
		2824
		2825	EV_FREQUENT_CHECK;
		2826
		2827	ev_start (EV_A_ (W)w, ++forkcnt);
		2828	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2829	forks [forkcnt - 1] = w;
		2830
		2831	EV_FREQUENT_CHECK;
		2832	}
		2833
		2834	void
		2835	ev_fork_stop (EV_P_ ev_fork *w)
		2836	{
		2837	clear_pending (EV_A_ (W)w);
		2838	if (expect_false (!ev_is_active (w)))
		2839	return;
		2840
		2841	EV_FREQUENT_CHECK;
		2842
		2843	{
		2844	int active = ev_active (w);
		2845
		2846	forks [active - 1] = forks [--forkcnt];
		2847	ev_active (forks [active - 1]) = active;
		2848	}
		2849
		2850	ev_stop (EV_A_ (W)w);
		2851
		2852	EV_FREQUENT_CHECK;
		2853	}
		2854	#endif
		2855
		2856	#if EV_ASYNC_ENABLE
		2857	void
		2858	ev_async_start (EV_P_ ev_async *w)
		2859	{
		2860	if (expect_false (ev_is_active (w)))
		2861	return;
		2862
		2863	evpipe_init (EV_A);
		2864
		2865	EV_FREQUENT_CHECK;
		2866
		2867	ev_start (EV_A_ (W)w, ++asynccnt);
		2868	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2869	asyncs [asynccnt - 1] = w;
		2870
		2871	EV_FREQUENT_CHECK;
		2872	}
		2873
		2874	void
		2875	ev_async_stop (EV_P_ ev_async *w)
		2876	{
		2877	clear_pending (EV_A_ (W)w);
		2878	if (expect_false (!ev_is_active (w)))
		2879	return;
		2880
		2881	EV_FREQUENT_CHECK;
		2882
		2883	{
		2884	int active = ev_active (w);
		2885
		2886	asyncs [active - 1] = asyncs [--asynccnt];
		2887	ev_active (asyncs [active - 1]) = active;
		2888	}
		2889
		2890	ev_stop (EV_A_ (W)w);
		2891
		2892	EV_FREQUENT_CHECK;
		2893	}
		2894
		2895	void
		2896	ev_async_send (EV_P_ ev_async *w)
		2897	{
		2898	w->sent = 1;
		2899	evpipe_write (EV_A_ &gotasync);
1710	}	2900	}
1711	#endif	2901	#endif
1712		2902
1713	/*****************************************************************************/	2903	/*****************************************************************************/
1714		2904
1715	struct ev_once	2905	struct ev_once
1716	{	2906	{
1717	struct ev_io io;	2907	ev_io io;
1718	struct ev_timer to;	2908	ev_timer to;
1719	void (*cb)(int revents, void *arg);	2909	void (*cb)(int revents, void *arg);
1720	void *arg;	2910	void *arg;
1721	};	2911	};
1722		2912
1723	static void	2913	static void
…		…
1732		2922
1733	cb (revents, arg);	2923	cb (revents, arg);
1734	}	2924	}
1735		2925
1736	static void	2926	static void
1737	once_cb_io (EV_P_ struct ev_io *w, int revents)	2927	once_cb_io (EV_P_ ev_io *w, int revents)
1738	{	2928	{
1739	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2929	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1740	}	2930	}
1741		2931
1742	static void	2932	static void
1743	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2933	once_cb_to (EV_P_ ev_timer *w, int revents)
1744	{	2934	{
1745	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2935	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1746	}	2936	}
1747		2937
1748	void	2938	void
…		…
1772	ev_timer_set (&once->to, timeout, 0.);	2962	ev_timer_set (&once->to, timeout, 0.);
1773	ev_timer_start (EV_A_ &once->to);	2963	ev_timer_start (EV_A_ &once->to);
1774	}	2964	}
1775	}	2965	}
1776		2966
		2967	#if EV_MULTIPLICITY
		2968	#include "ev_wrap.h"
		2969	#endif
		2970
1777	#ifdef __cplusplus	2971	#ifdef __cplusplus
1778	}	2972	}
1779	#endif	2973	#endif
1780		2974

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