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Comparing libev/ev.c (file contents):
Revision 1.183 by root, Wed Dec 12 05:11:56 2007 UTC vs.
Revision 1.293 by root, Mon Jun 29 18:46:52 2009 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) 2007,2008,2009 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"
41	# endif	50	# endif
42		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
		64	# endif
		65
43	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
44	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
45	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
46	# endif	69	# endif
47	# ifndef EV_USE_REALTIME	70	# ifndef EV_USE_REALTIME
48	# define EV_USE_REALTIME 1	71	# define EV_USE_REALTIME 0
49	# endif	72	# endif
50	# else	73	# else
51	# ifndef EV_USE_MONOTONIC	74	# ifndef EV_USE_MONOTONIC
52	# define EV_USE_MONOTONIC 0	75	# define EV_USE_MONOTONIC 0
53	# endif	76	# endif
54	# ifndef EV_USE_REALTIME	77	# ifndef EV_USE_REALTIME
55	# define EV_USE_REALTIME 0	78	# define EV_USE_REALTIME 0
		79	# endif
		80	# endif
		81
		82	# ifndef EV_USE_NANOSLEEP
		83	# if HAVE_NANOSLEEP
		84	# define EV_USE_NANOSLEEP 1
		85	# else
		86	# define EV_USE_NANOSLEEP 0
56	# endif	87	# endif
57	# endif	88	# endif
58		89
59	# ifndef EV_USE_SELECT	90	# ifndef EV_USE_SELECT
60	# if HAVE_SELECT && HAVE_SYS_SELECT_H	91	# if HAVE_SELECT && HAVE_SYS_SELECT_H
…		…
102	# else	133	# else
103	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
104	# endif	135	# endif
105	# endif	136	# endif
106		137
		138	# ifndef EV_USE_EVENTFD
		139	# if HAVE_EVENTFD
		140	# define EV_USE_EVENTFD 1
		141	# else
		142	# define EV_USE_EVENTFD 0
		143	# endif
		144	# endif
		145
107	#endif	146	#endif
108		147
109	#include <math.h>	148	#include <math.h>
110	#include <stdlib.h>	149	#include <stdlib.h>
111	#include <fcntl.h>	150	#include <fcntl.h>
…		…
129	#ifndef _WIN32	168	#ifndef _WIN32
130	# include <sys/time.h>	169	# include <sys/time.h>
131	# include <sys/wait.h>	170	# include <sys/wait.h>
132	# include <unistd.h>	171	# include <unistd.h>
133	#else	172	#else
		173	# include <io.h>
134	# define WIN32_LEAN_AND_MEAN	174	# define WIN32_LEAN_AND_MEAN
135	# include <windows.h>	175	# include <windows.h>
136	# ifndef EV_SELECT_IS_WINSOCKET	176	# ifndef EV_SELECT_IS_WINSOCKET
137	# define EV_SELECT_IS_WINSOCKET 1	177	# define EV_SELECT_IS_WINSOCKET 1
138	# endif	178	# endif
139	#endif	179	#endif
140		180
141	/**/	181	/* this block tries to deduce configuration from header-defined symbols and defaults */
		182
		183	#ifndef EV_USE_CLOCK_SYSCALL
		184	# if __linux && __GLIBC__ >= 2
		185	# define EV_USE_CLOCK_SYSCALL 1
		186	# else
		187	# define EV_USE_CLOCK_SYSCALL 0
		188	# endif
		189	#endif
142		190
143	#ifndef EV_USE_MONOTONIC	191	#ifndef EV_USE_MONOTONIC
		192	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		193	# define EV_USE_MONOTONIC 1
		194	# else
144	# define EV_USE_MONOTONIC 0	195	# define EV_USE_MONOTONIC 0
		196	# endif
145	#endif	197	#endif
146		198
147	#ifndef EV_USE_REALTIME	199	#ifndef EV_USE_REALTIME
148	# define EV_USE_REALTIME 0	200	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
		201	#endif
		202
		203	#ifndef EV_USE_NANOSLEEP
		204	# if _POSIX_C_SOURCE >= 199309L
		205	# define EV_USE_NANOSLEEP 1
		206	# else
		207	# define EV_USE_NANOSLEEP 0
		208	# endif
149	#endif	209	#endif
150		210
151	#ifndef EV_USE_SELECT	211	#ifndef EV_USE_SELECT
152	# define EV_USE_SELECT 1	212	# define EV_USE_SELECT 1
153	#endif	213	#endif
…		…
159	# define EV_USE_POLL 1	219	# define EV_USE_POLL 1
160	# endif	220	# endif
161	#endif	221	#endif
162		222
163	#ifndef EV_USE_EPOLL	223	#ifndef EV_USE_EPOLL
		224	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		225	# define EV_USE_EPOLL 1
		226	# else
164	# define EV_USE_EPOLL 0	227	# define EV_USE_EPOLL 0
		228	# endif
165	#endif	229	#endif
166		230
167	#ifndef EV_USE_KQUEUE	231	#ifndef EV_USE_KQUEUE
168	# define EV_USE_KQUEUE 0	232	# define EV_USE_KQUEUE 0
169	#endif	233	#endif
…		…
171	#ifndef EV_USE_PORT	235	#ifndef EV_USE_PORT
172	# define EV_USE_PORT 0	236	# define EV_USE_PORT 0
173	#endif	237	#endif
174		238
175	#ifndef EV_USE_INOTIFY	239	#ifndef EV_USE_INOTIFY
		240	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		241	# define EV_USE_INOTIFY 1
		242	# else
176	# define EV_USE_INOTIFY 0	243	# define EV_USE_INOTIFY 0
		244	# endif
177	#endif	245	#endif
178		246
179	#ifndef EV_PID_HASHSIZE	247	#ifndef EV_PID_HASHSIZE
180	# if EV_MINIMAL	248	# if EV_MINIMAL
181	# define EV_PID_HASHSIZE 1	249	# define EV_PID_HASHSIZE 1
…		…
190	# else	258	# else
191	# define EV_INOTIFY_HASHSIZE 16	259	# define EV_INOTIFY_HASHSIZE 16
192	# endif	260	# endif
193	#endif	261	#endif
194		262
195	/**/	263	#ifndef EV_USE_EVENTFD
		264	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		265	# define EV_USE_EVENTFD 1
		266	# else
		267	# define EV_USE_EVENTFD 0
		268	# endif
		269	#endif
		270
		271	#if 0 /* debugging */
		272	# define EV_VERIFY 3
		273	# define EV_USE_4HEAP 1
		274	# define EV_HEAP_CACHE_AT 1
		275	#endif
		276
		277	#ifndef EV_VERIFY
		278	# define EV_VERIFY !EV_MINIMAL
		279	#endif
		280
		281	#ifndef EV_USE_4HEAP
		282	# define EV_USE_4HEAP !EV_MINIMAL
		283	#endif
		284
		285	#ifndef EV_HEAP_CACHE_AT
		286	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		287	#endif
		288
		289	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		290	/* which makes programs even slower. might work on other unices, too. */
		291	#if EV_USE_CLOCK_SYSCALL
		292	# include <syscall.h>
		293	# ifdef SYS_clock_gettime
		294	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		295	# undef EV_USE_MONOTONIC
		296	# define EV_USE_MONOTONIC 1
		297	# else
		298	# undef EV_USE_CLOCK_SYSCALL
		299	# define EV_USE_CLOCK_SYSCALL 0
		300	# endif
		301	#endif
		302
		303	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
196		304
197	#ifndef CLOCK_MONOTONIC	305	#ifndef CLOCK_MONOTONIC
198	# undef EV_USE_MONOTONIC	306	# undef EV_USE_MONOTONIC
199	# define EV_USE_MONOTONIC 0	307	# define EV_USE_MONOTONIC 0
200	#endif	308	#endif
…		…
202	#ifndef CLOCK_REALTIME	310	#ifndef CLOCK_REALTIME
203	# undef EV_USE_REALTIME	311	# undef EV_USE_REALTIME
204	# define EV_USE_REALTIME 0	312	# define EV_USE_REALTIME 0
205	#endif	313	#endif
206		314
		315	#if !EV_STAT_ENABLE
		316	# undef EV_USE_INOTIFY
		317	# define EV_USE_INOTIFY 0
		318	#endif
		319
		320	#if !EV_USE_NANOSLEEP
		321	# ifndef _WIN32
		322	# include <sys/select.h>
		323	# endif
		324	#endif
		325
		326	#if EV_USE_INOTIFY
		327	# include <sys/utsname.h>
		328	# include <sys/statfs.h>
		329	# include <sys/inotify.h>
		330	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		331	# ifndef IN_DONT_FOLLOW
		332	# undef EV_USE_INOTIFY
		333	# define EV_USE_INOTIFY 0
		334	# endif
		335	#endif
		336
207	#if EV_SELECT_IS_WINSOCKET	337	#if EV_SELECT_IS_WINSOCKET
208	# include <winsock.h>	338	# include <winsock.h>
209	#endif	339	#endif
210		340
211	#if !EV_STAT_ENABLE	341	#if EV_USE_EVENTFD
212	# define EV_USE_INOTIFY 0	342	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		343	# include <stdint.h>
		344	# ifdef __cplusplus
		345	extern "C" {
213	#endif	346	# endif
214		347	int eventfd (unsigned int initval, int flags);
215	#if EV_USE_INOTIFY	348	# ifdef __cplusplus
216	# include <sys/inotify.h>	349	}
		350	# endif
217	#endif	351	#endif
218		352
219	/**/	353	/**/
		354
		355	#if EV_VERIFY >= 3
		356	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		357	#else
		358	# define EV_FREQUENT_CHECK do { } while (0)
		359	#endif
220		360
221	/*	361	/*
222	* This is used to avoid floating point rounding problems.	362	* This is used to avoid floating point rounding problems.
223	* It is added to ev_rt_now when scheduling periodics	363	* It is added to ev_rt_now when scheduling periodics
224	* to ensure progress, time-wise, even when rounding	364	* to ensure progress, time-wise, even when rounding
…		…
230		370
231	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	371	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
232	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	372	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
233	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */	373	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
234		374
235	#if __GNUC__ >= 3	375	#if __GNUC__ >= 4
236	# define expect(expr,value) __builtin_expect ((expr),(value))	376	# define expect(expr,value) __builtin_expect ((expr),(value))
237	# define noinline __attribute__ ((noinline))	377	# define noinline __attribute__ ((noinline))
238	#else	378	#else
239	# define expect(expr,value) (expr)	379	# define expect(expr,value) (expr)
240	# define noinline	380	# define noinline
241	# if __STDC_VERSION__ < 199901L	381	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
242	# define inline	382	# define inline
243	# endif	383	# endif
244	#endif	384	#endif
245		385
246	#define expect_false(expr) expect ((expr) != 0, 0)	386	#define expect_false(expr) expect ((expr) != 0, 0)
…		…
261		401
262	typedef ev_watcher *W;	402	typedef ev_watcher *W;
263	typedef ev_watcher_list *WL;	403	typedef ev_watcher_list *WL;
264	typedef ev_watcher_time *WT;	404	typedef ev_watcher_time *WT;
265		405
		406	#define ev_active(w) ((W)(w))->active
		407	#define ev_at(w) ((WT)(w))->at
		408
		409	#if EV_USE_REALTIME
		410	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		411	/* giving it a reasonably high chance of working on typical architetcures */
		412	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		413	#endif
		414
		415	#if EV_USE_MONOTONIC
266	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	416	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		417	#endif
267		418
268	#ifdef _WIN32	419	#ifdef _WIN32
269	# include "ev_win32.c"	420	# include "ev_win32.c"
270	#endif	421	#endif
271		422
…		…
278	{	429	{
279	syserr_cb = cb;	430	syserr_cb = cb;
280	}	431	}
281		432
282	static void noinline	433	static void noinline
283	syserr (const char *msg)	434	ev_syserr (const char *msg)
284	{	435	{
285	if (!msg)	436	if (!msg)
286	msg = "(libev) system error";	437	msg = "(libev) system error";
287		438
288	if (syserr_cb)	439	if (syserr_cb)
…		…
292	perror (msg);	443	perror (msg);
293	abort ();	444	abort ();
294	}	445	}
295	}	446	}
296		447
		448	static void *
		449	ev_realloc_emul (void *ptr, long size)
		450	{
		451	/* some systems, notably openbsd and darwin, fail to properly
		452	* implement realloc (x, 0) (as required by both ansi c-98 and
		453	* the single unix specification, so work around them here.
		454	*/
		455
		456	if (size)
		457	return realloc (ptr, size);
		458
		459	free (ptr);
		460	return 0;
		461	}
		462
297	static void *(*alloc)(void *ptr, long size);	463	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
298		464
299	void	465	void
300	ev_set_allocator (void *(*cb)(void *ptr, long size))	466	ev_set_allocator (void *(*cb)(void *ptr, long size))
301	{	467	{
302	alloc = cb;	468	alloc = cb;
303	}	469	}
304		470
305	inline_speed void *	471	inline_speed void *
306	ev_realloc (void *ptr, long size)	472	ev_realloc (void *ptr, long size)
307	{	473	{
308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	474	ptr = alloc (ptr, size);
309		475
310	if (!ptr && size)	476	if (!ptr && size)
311	{	477	{
312	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	478	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
313	abort ();	479	abort ();
…		…
319	#define ev_malloc(size) ev_realloc (0, (size))	485	#define ev_malloc(size) ev_realloc (0, (size))
320	#define ev_free(ptr) ev_realloc ((ptr), 0)	486	#define ev_free(ptr) ev_realloc ((ptr), 0)
321		487
322	/*****************************************************************************/	488	/*****************************************************************************/
323		489
		490	/* file descriptor info structure */
324	typedef struct	491	typedef struct
325	{	492	{
326	WL head;	493	WL head;
327	unsigned char events;	494	unsigned char events; /* the events watched for */
		495	unsigned char reify; /* flag set when this ANFD needs reification */
		496	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
328	unsigned char reify;	497	unsigned char unused;
		498	#if EV_USE_EPOLL
		499	unsigned int egen; /* generation counter to counter epoll bugs */
		500	#endif
329	#if EV_SELECT_IS_WINSOCKET	501	#if EV_SELECT_IS_WINSOCKET
330	SOCKET handle;	502	SOCKET handle;
331	#endif	503	#endif
332	} ANFD;	504	} ANFD;
333		505
		506	/* stores the pending event set for a given watcher */
334	typedef struct	507	typedef struct
335	{	508	{
336	W w;	509	W w;
337	int events;	510	int events; /* the pending event set for the given watcher */
338	} ANPENDING;	511	} ANPENDING;
339		512
340	#if EV_USE_INOTIFY	513	#if EV_USE_INOTIFY
		514	/* hash table entry per inotify-id */
341	typedef struct	515	typedef struct
342	{	516	{
343	WL head;	517	WL head;
344	} ANFS;	518	} ANFS;
		519	#endif
		520
		521	/* Heap Entry */
		522	#if EV_HEAP_CACHE_AT
		523	/* a heap element */
		524	typedef struct {
		525	ev_tstamp at;
		526	WT w;
		527	} ANHE;
		528
		529	#define ANHE_w(he) (he).w /* access watcher, read-write */
		530	#define ANHE_at(he) (he).at /* access cached at, read-only */
		531	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		532	#else
		533	/* a heap element */
		534	typedef WT ANHE;
		535
		536	#define ANHE_w(he) (he)
		537	#define ANHE_at(he) (he)->at
		538	#define ANHE_at_cache(he)
345	#endif	539	#endif
346		540
347	#if EV_MULTIPLICITY	541	#if EV_MULTIPLICITY
348		542
349	struct ev_loop	543	struct ev_loop
…		…
370		564
371	#endif	565	#endif
372		566
373	/*****************************************************************************/	567	/*****************************************************************************/
374		568
		569	#ifndef EV_HAVE_EV_TIME
375	ev_tstamp	570	ev_tstamp
376	ev_time (void)	571	ev_time (void)
377	{	572	{
378	#if EV_USE_REALTIME	573	#if EV_USE_REALTIME
		574	if (expect_true (have_realtime))
		575	{
379	struct timespec ts;	576	struct timespec ts;
380	clock_gettime (CLOCK_REALTIME, &ts);	577	clock_gettime (CLOCK_REALTIME, &ts);
381	return ts.tv_sec + ts.tv_nsec * 1e-9;	578	return ts.tv_sec + ts.tv_nsec * 1e-9;
382	#else	579	}
		580	#endif
		581
383	struct timeval tv;	582	struct timeval tv;
384	gettimeofday (&tv, 0);	583	gettimeofday (&tv, 0);
385	return tv.tv_sec + tv.tv_usec * 1e-6;	584	return tv.tv_sec + tv.tv_usec * 1e-6;
386	#endif
387	}	585	}
		586	#endif
388		587
389	ev_tstamp inline_size	588	inline_size ev_tstamp
390	get_clock (void)	589	get_clock (void)
391	{	590	{
392	#if EV_USE_MONOTONIC	591	#if EV_USE_MONOTONIC
393	if (expect_true (have_monotonic))	592	if (expect_true (have_monotonic))
394	{	593	{
…		…
407	{	606	{
408	return ev_rt_now;	607	return ev_rt_now;
409	}	608	}
410	#endif	609	#endif
411		610
412	int inline_size	611	void
		612	ev_sleep (ev_tstamp delay)
		613	{
		614	if (delay > 0.)
		615	{
		616	#if EV_USE_NANOSLEEP
		617	struct timespec ts;
		618
		619	ts.tv_sec = (time_t)delay;
		620	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		621
		622	nanosleep (&ts, 0);
		623	#elif defined(_WIN32)
		624	Sleep ((unsigned long)(delay * 1e3));
		625	#else
		626	struct timeval tv;
		627
		628	tv.tv_sec = (time_t)delay;
		629	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		630
		631	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		632	/* somehting not guaranteed by newer posix versions, but guaranteed */
		633	/* by older ones */
		634	select (0, 0, 0, 0, &tv);
		635	#endif
		636	}
		637	}
		638
		639	/*****************************************************************************/
		640
		641	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		642
		643	/* find a suitable new size for the given array, */
		644	/* hopefully by rounding to a ncie-to-malloc size */
		645	inline_size int
413	array_nextsize (int elem, int cur, int cnt)	646	array_nextsize (int elem, int cur, int cnt)
414	{	647	{
415	int ncur = cur + 1;	648	int ncur = cur + 1;
416		649
417	do	650	do
418	ncur <<= 1;	651	ncur <<= 1;
419	while (cnt > ncur);	652	while (cnt > ncur);
420		653
421	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	654	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
422	if (elem * ncur > 4096)	655	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
423	{	656	{
424	ncur *= elem;	657	ncur *= elem;
425	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	658	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
426	ncur = ncur - sizeof (void *) * 4;	659	ncur = ncur - sizeof (void *) * 4;
427	ncur /= elem;	660	ncur /= elem;
428	}	661	}
429		662
430	return ncur;	663	return ncur;
…		…
434	array_realloc (int elem, void *base, int *cur, int cnt)	667	array_realloc (int elem, void *base, int *cur, int cnt)
435	{	668	{
436	*cur = array_nextsize (elem, *cur, cnt);	669	*cur = array_nextsize (elem, *cur, cnt);
437	return ev_realloc (base, elem * *cur);	670	return ev_realloc (base, elem * *cur);
438	}	671	}
		672
		673	#define array_init_zero(base,count) \
		674	memset ((void *)(base), 0, sizeof (*(base)) * (count))
439		675
440	#define array_needsize(type,base,cur,cnt,init) \	676	#define array_needsize(type,base,cur,cnt,init) \
441	if (expect_false ((cnt) > (cur))) \	677	if (expect_false ((cnt) > (cur))) \
442	{ \	678	{ \
443	int ocur_ = (cur); \	679	int ocur_ = (cur); \
…		…
455	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	691	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
456	}	692	}
457	#endif	693	#endif
458		694
459	#define array_free(stem, idx) \	695	#define array_free(stem, idx) \
460	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	696	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
461		697
462	/*****************************************************************************/	698	/*****************************************************************************/
		699
		700	/* dummy callback for pending events */
		701	static void noinline
		702	pendingcb (EV_P_ ev_prepare *w, int revents)
		703	{
		704	}
463		705
464	void noinline	706	void noinline
465	ev_feed_event (EV_P_ void *w, int revents)	707	ev_feed_event (EV_P_ void *w, int revents)
466	{	708	{
467	W w_ = (W)w;	709	W w_ = (W)w;
…		…
476	pendings [pri][w_->pending - 1].w = w_;	718	pendings [pri][w_->pending - 1].w = w_;
477	pendings [pri][w_->pending - 1].events = revents;	719	pendings [pri][w_->pending - 1].events = revents;
478	}	720	}
479	}	721	}
480		722
481	void inline_speed	723	inline_speed void
		724	feed_reverse (EV_P_ W w)
		725	{
		726	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		727	rfeeds [rfeedcnt++] = w;
		728	}
		729
		730	inline_size void
		731	feed_reverse_done (EV_P_ int revents)
		732	{
		733	do
		734	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		735	while (rfeedcnt);
		736	}
		737
		738	inline_speed void
482	queue_events (EV_P_ W *events, int eventcnt, int type)	739	queue_events (EV_P_ W *events, int eventcnt, int type)
483	{	740	{
484	int i;	741	int i;
485		742
486	for (i = 0; i < eventcnt; ++i)	743	for (i = 0; i < eventcnt; ++i)
487	ev_feed_event (EV_A_ events [i], type);	744	ev_feed_event (EV_A_ events [i], type);
488	}	745	}
489		746
490	/*****************************************************************************/	747	/*****************************************************************************/
491		748
492	void inline_size	749	inline_speed void
493	anfds_init (ANFD *base, int count)
494	{
495	while (count--)
496	{
497	base->head = 0;
498	base->events = EV_NONE;
499	base->reify = 0;
500
501	++base;
502	}
503	}
504
505	void inline_speed
506	fd_event (EV_P_ int fd, int revents)	750	fd_event (EV_P_ int fd, int revents)
507	{	751	{
508	ANFD *anfd = anfds + fd;	752	ANFD *anfd = anfds + fd;
509	ev_io *w;	753	ev_io *w;
510		754
…		…
522	{	766	{
523	if (fd >= 0 && fd < anfdmax)	767	if (fd >= 0 && fd < anfdmax)
524	fd_event (EV_A_ fd, revents);	768	fd_event (EV_A_ fd, revents);
525	}	769	}
526		770
527	void inline_size	771	/* make sure the external fd watch events are in-sync */
		772	/* with the kernel/libev internal state */
		773	inline_size void
528	fd_reify (EV_P)	774	fd_reify (EV_P)
529	{	775	{
530	int i;	776	int i;
531		777
532	for (i = 0; i < fdchangecnt; ++i)	778	for (i = 0; i < fdchangecnt; ++i)
533	{	779	{
534	int fd = fdchanges [i];	780	int fd = fdchanges [i];
535	ANFD *anfd = anfds + fd;	781	ANFD *anfd = anfds + fd;
536	ev_io *w;	782	ev_io *w;
537		783
538	int events = 0;	784	unsigned char events = 0;
539		785
540	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	786	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
541	events |= w->events;	787	events |= (unsigned char)w->events;
542		788
543	#if EV_SELECT_IS_WINSOCKET	789	#if EV_SELECT_IS_WINSOCKET
544	if (events)	790	if (events)
545	{	791	{
546	unsigned long argp;	792	unsigned long arg;
		793	#ifdef EV_FD_TO_WIN32_HANDLE
		794	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		795	#else
547	anfd->handle = _get_osfhandle (fd);	796	anfd->handle = _get_osfhandle (fd);
		797	#endif
548	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	798	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
549	}	799	}
550	#endif	800	#endif
551		801
		802	{
		803	unsigned char o_events = anfd->events;
		804	unsigned char o_reify = anfd->reify;
		805
552	anfd->reify = 0;	806	anfd->reify = 0;
553
554	backend_modify (EV_A_ fd, anfd->events, events);
555	anfd->events = events;	807	anfd->events = events;
		808
		809	if (o_events != events || o_reify & EV__IOFDSET)
		810	backend_modify (EV_A_ fd, o_events, events);
		811	}
556	}	812	}
557		813
558	fdchangecnt = 0;	814	fdchangecnt = 0;
559	}	815	}
560		816
561	void inline_size	817	/* something about the given fd changed */
		818	inline_size void
562	fd_change (EV_P_ int fd, int flags)	819	fd_change (EV_P_ int fd, int flags)
563	{	820	{
564	unsigned char reify = anfds [fd].reify;	821	unsigned char reify = anfds [fd].reify;
565	anfds [fd].reify |= flags | 1;	822	anfds [fd].reify |= flags;
566		823
567	if (expect_true (!reify))	824	if (expect_true (!reify))
568	{	825	{
569	++fdchangecnt;	826	++fdchangecnt;
570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	827	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
571	fdchanges [fdchangecnt - 1] = fd;	828	fdchanges [fdchangecnt - 1] = fd;
572	}	829	}
573	}	830	}
574		831
575	void inline_speed	832	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		833	inline_speed void
576	fd_kill (EV_P_ int fd)	834	fd_kill (EV_P_ int fd)
577	{	835	{
578	ev_io *w;	836	ev_io *w;
579		837
580	while ((w = (ev_io *)anfds [fd].head))	838	while ((w = (ev_io *)anfds [fd].head))
…		…
582	ev_io_stop (EV_A_ w);	840	ev_io_stop (EV_A_ w);
583	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	841	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
584	}	842	}
585	}	843	}
586		844
587	int inline_size	845	/* check whether the given fd is atcually valid, for error recovery */
		846	inline_size int
588	fd_valid (int fd)	847	fd_valid (int fd)
589	{	848	{
590	#ifdef _WIN32	849	#ifdef _WIN32
591	return _get_osfhandle (fd) != -1;	850	return _get_osfhandle (fd) != -1;
592	#else	851	#else
…		…
600	{	859	{
601	int fd;	860	int fd;
602		861
603	for (fd = 0; fd < anfdmax; ++fd)	862	for (fd = 0; fd < anfdmax; ++fd)
604	if (anfds [fd].events)	863	if (anfds [fd].events)
605	if (!fd_valid (fd) == -1 && errno == EBADF)	864	if (!fd_valid (fd) && errno == EBADF)
606	fd_kill (EV_A_ fd);	865	fd_kill (EV_A_ fd);
607	}	866	}
608		867
609	/* called on ENOMEM in select/poll to kill some fds and retry */	868	/* called on ENOMEM in select/poll to kill some fds and retry */
610	static void noinline	869	static void noinline
…		…
628		887
629	for (fd = 0; fd < anfdmax; ++fd)	888	for (fd = 0; fd < anfdmax; ++fd)
630	if (anfds [fd].events)	889	if (anfds [fd].events)
631	{	890	{
632	anfds [fd].events = 0;	891	anfds [fd].events = 0;
		892	anfds [fd].emask = 0;
633	fd_change (EV_A_ fd, EV_IOFDSET);	893	fd_change (EV_A_ fd, EV__IOFDSET | 1);
634	}	894	}
635	}	895	}
636		896
637	/*****************************************************************************/	897	/*****************************************************************************/
638		898
639	void inline_speed	899	/*
640	upheap (WT *heap, int k)	900	* the heap functions want a real array index. array index 0 uis guaranteed to not
641	{	901	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
642	WT w = heap [k];	902	* the branching factor of the d-tree.
		903	*/
643		904
644	while (k)	905	/*
645	{	906	* at the moment we allow libev the luxury of two heaps,
646	int p = (k - 1) >> 1;	907	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		908	* which is more cache-efficient.
		909	* the difference is about 5% with 50000+ watchers.
		910	*/
		911	#if EV_USE_4HEAP
647		912
648	if (heap [p]->at <= w->at)	913	#define DHEAP 4
		914	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		915	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		916	#define UPHEAP_DONE(p,k) ((p) == (k))
		917
		918	/* away from the root */
		919	inline_speed void
		920	downheap (ANHE *heap, int N, int k)
		921	{
		922	ANHE he = heap [k];
		923	ANHE *E = heap + N + HEAP0;
		924
		925	for (;;)
		926	{
		927	ev_tstamp minat;
		928	ANHE *minpos;
		929	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
		930
		931	/* find minimum child */
		932	if (expect_true (pos + DHEAP - 1 < E))
		933	{
		934	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		935	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		936	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		937	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		938	}
		939	else if (pos < E)
		940	{
		941	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		942	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		943	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		944	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		945	}
		946	else
649	break;	947	break;
650		948
		949	if (ANHE_at (he) <= minat)
		950	break;
		951
		952	heap [k] = *minpos;
		953	ev_active (ANHE_w (*minpos)) = k;
		954
		955	k = minpos - heap;
		956	}
		957
		958	heap [k] = he;
		959	ev_active (ANHE_w (he)) = k;
		960	}
		961
		962	#else /* 4HEAP */
		963
		964	#define HEAP0 1
		965	#define HPARENT(k) ((k) >> 1)
		966	#define UPHEAP_DONE(p,k) (!(p))
		967
		968	/* away from the root */
		969	inline_speed void
		970	downheap (ANHE *heap, int N, int k)
		971	{
		972	ANHE he = heap [k];
		973
		974	for (;;)
		975	{
		976	int c = k << 1;
		977
		978	if (c > N + HEAP0 - 1)
		979	break;
		980
		981	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		982	? 1 : 0;
		983
		984	if (ANHE_at (he) <= ANHE_at (heap [c]))
		985	break;
		986
		987	heap [k] = heap [c];
		988	ev_active (ANHE_w (heap [k])) = k;
		989
		990	k = c;
		991	}
		992
		993	heap [k] = he;
		994	ev_active (ANHE_w (he)) = k;
		995	}
		996	#endif
		997
		998	/* towards the root */
		999	inline_speed void
		1000	upheap (ANHE *heap, int k)
		1001	{
		1002	ANHE he = heap [k];
		1003
		1004	for (;;)
		1005	{
		1006	int p = HPARENT (k);
		1007
		1008	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1009	break;
		1010
651	heap [k] = heap [p];	1011	heap [k] = heap [p];
652	((W)heap [k])->active = k + 1;	1012	ev_active (ANHE_w (heap [k])) = k;
653	k = p;	1013	k = p;
654	}	1014	}
655		1015
656	heap [k] = w;	1016	heap [k] = he;
657	((W)heap [k])->active = k + 1;	1017	ev_active (ANHE_w (he)) = k;
658	}	1018	}
659		1019
660	void inline_speed	1020	/* move an element suitably so it is in a correct place */
661	downheap (WT *heap, int N, int k)	1021	inline_size void
662	{
663	WT w = heap [k];
664
665	for (;;)
666	{
667	int c = (k << 1) + 1;
668
669	if (c >= N)
670	break;
671
672	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
673	? 1 : 0;
674
675	if (w->at <= heap [c]->at)
676	break;
677
678	heap [k] = heap [c];
679	((W)heap [k])->active = k + 1;
680
681	k = c;
682	}
683
684	heap [k] = w;
685	((W)heap [k])->active = k + 1;
686	}
687
688	void inline_size
689	adjustheap (WT *heap, int N, int k)	1022	adjustheap (ANHE *heap, int N, int k)
690	{	1023	{
		1024	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
691	upheap (heap, k);	1025	upheap (heap, k);
		1026	else
692	downheap (heap, N, k);	1027	downheap (heap, N, k);
		1028	}
		1029
		1030	/* rebuild the heap: this function is used only once and executed rarely */
		1031	inline_size void
		1032	reheap (ANHE *heap, int N)
		1033	{
		1034	int i;
		1035
		1036	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1037	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1038	for (i = 0; i < N; ++i)
		1039	upheap (heap, i + HEAP0);
693	}	1040	}
694		1041
695	/*****************************************************************************/	1042	/*****************************************************************************/
696		1043
		1044	/* associate signal watchers to a signal signal */
697	typedef struct	1045	typedef struct
698	{	1046	{
699	WL head;	1047	WL head;
700	sig_atomic_t volatile gotsig;	1048	EV_ATOMIC_T gotsig;
701	} ANSIG;	1049	} ANSIG;
702		1050
703	static ANSIG *signals;	1051	static ANSIG *signals;
704	static int signalmax;	1052	static int signalmax;
705		1053
706	static int sigpipe [2];	1054	static EV_ATOMIC_T gotsig;
707	static sig_atomic_t volatile gotsig;
708	static ev_io sigev;
709		1055
710	void inline_size	1056	/*****************************************************************************/
711	signals_init (ANSIG *base, int count)
712	{
713	while (count--)
714	{
715	base->head = 0;
716	base->gotsig = 0;
717		1057
718	++base;	1058	/* used to prepare libev internal fd's */
719	}	1059	/* this is not fork-safe */
720	}	1060	inline_speed void
721
722	static void
723	sighandler (int signum)
724	{
725	#if _WIN32
726	signal (signum, sighandler);
727	#endif
728
729	signals [signum - 1].gotsig = 1;
730
731	if (!gotsig)
732	{
733	int old_errno = errno;
734	gotsig = 1;
735	write (sigpipe [1], &signum, 1);
736	errno = old_errno;
737	}
738	}
739
740	void noinline
741	ev_feed_signal_event (EV_P_ int signum)
742	{
743	WL w;
744
745	#if EV_MULTIPLICITY
746	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
747	#endif
748
749	--signum;
750
751	if (signum < 0 || signum >= signalmax)
752	return;
753
754	signals [signum].gotsig = 0;
755
756	for (w = signals [signum].head; w; w = w->next)
757	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
758	}
759
760	static void
761	sigcb (EV_P_ ev_io *iow, int revents)
762	{
763	int signum;
764
765	read (sigpipe [0], &revents, 1);
766	gotsig = 0;
767
768	for (signum = signalmax; signum--; )
769	if (signals [signum].gotsig)
770	ev_feed_signal_event (EV_A_ signum + 1);
771	}
772
773	void inline_speed
774	fd_intern (int fd)	1061	fd_intern (int fd)
775	{	1062	{
776	#ifdef _WIN32	1063	#ifdef _WIN32
777	int arg = 1;	1064	unsigned long arg = 1;
778	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1065	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
779	#else	1066	#else
780	fcntl (fd, F_SETFD, FD_CLOEXEC);	1067	fcntl (fd, F_SETFD, FD_CLOEXEC);
781	fcntl (fd, F_SETFL, O_NONBLOCK);	1068	fcntl (fd, F_SETFL, O_NONBLOCK);
782	#endif	1069	#endif
783	}	1070	}
784		1071
785	static void noinline	1072	static void noinline
786	siginit (EV_P)	1073	evpipe_init (EV_P)
787	{	1074	{
		1075	if (!ev_is_active (&pipe_w))
		1076	{
		1077	#if EV_USE_EVENTFD
		1078	if ((evfd = eventfd (0, 0)) >= 0)
		1079	{
		1080	evpipe [0] = -1;
		1081	fd_intern (evfd);
		1082	ev_io_set (&pipe_w, evfd, EV_READ);
		1083	}
		1084	else
		1085	#endif
		1086	{
		1087	while (pipe (evpipe))
		1088	ev_syserr ("(libev) error creating signal/async pipe");
		1089
788	fd_intern (sigpipe [0]);	1090	fd_intern (evpipe [0]);
789	fd_intern (sigpipe [1]);	1091	fd_intern (evpipe [1]);
		1092	ev_io_set (&pipe_w, evpipe [0], EV_READ);
		1093	}
790		1094
791	ev_io_set (&sigev, sigpipe [0], EV_READ);
792	ev_io_start (EV_A_ &sigev);	1095	ev_io_start (EV_A_ &pipe_w);
793	ev_unref (EV_A); /* child watcher should not keep loop alive */	1096	ev_unref (EV_A); /* watcher should not keep loop alive */
		1097	}
		1098	}
		1099
		1100	inline_size void
		1101	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		1102	{
		1103	if (!*flag)
		1104	{
		1105	int old_errno = errno; /* save errno because write might clobber it */
		1106
		1107	*flag = 1;
		1108
		1109	#if EV_USE_EVENTFD
		1110	if (evfd >= 0)
		1111	{
		1112	uint64_t counter = 1;
		1113	write (evfd, &counter, sizeof (uint64_t));
		1114	}
		1115	else
		1116	#endif
		1117	write (evpipe [1], &old_errno, 1);
		1118
		1119	errno = old_errno;
		1120	}
		1121	}
		1122
		1123	/* called whenever the libev signal pipe */
		1124	/* got some events (signal, async) */
		1125	static void
		1126	pipecb (EV_P_ ev_io *iow, int revents)
		1127	{
		1128	#if EV_USE_EVENTFD
		1129	if (evfd >= 0)
		1130	{
		1131	uint64_t counter;
		1132	read (evfd, &counter, sizeof (uint64_t));
		1133	}
		1134	else
		1135	#endif
		1136	{
		1137	char dummy;
		1138	read (evpipe [0], &dummy, 1);
		1139	}
		1140
		1141	if (gotsig && ev_is_default_loop (EV_A))
		1142	{
		1143	int signum;
		1144	gotsig = 0;
		1145
		1146	for (signum = signalmax; signum--; )
		1147	if (signals [signum].gotsig)
		1148	ev_feed_signal_event (EV_A_ signum + 1);
		1149	}
		1150
		1151	#if EV_ASYNC_ENABLE
		1152	if (gotasync)
		1153	{
		1154	int i;
		1155	gotasync = 0;
		1156
		1157	for (i = asynccnt; i--; )
		1158	if (asyncs [i]->sent)
		1159	{
		1160	asyncs [i]->sent = 0;
		1161	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		1162	}
		1163	}
		1164	#endif
794	}	1165	}
795		1166
796	/*****************************************************************************/	1167	/*****************************************************************************/
797		1168
		1169	static void
		1170	ev_sighandler (int signum)
		1171	{
		1172	#if EV_MULTIPLICITY
		1173	struct ev_loop *loop = &default_loop_struct;
		1174	#endif
		1175
		1176	#if _WIN32
		1177	signal (signum, ev_sighandler);
		1178	#endif
		1179
		1180	signals [signum - 1].gotsig = 1;
		1181	evpipe_write (EV_A_ &gotsig);
		1182	}
		1183
		1184	void noinline
		1185	ev_feed_signal_event (EV_P_ int signum)
		1186	{
		1187	WL w;
		1188
		1189	#if EV_MULTIPLICITY
		1190	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		1191	#endif
		1192
		1193	--signum;
		1194
		1195	if (signum < 0 || signum >= signalmax)
		1196	return;
		1197
		1198	signals [signum].gotsig = 0;
		1199
		1200	for (w = signals [signum].head; w; w = w->next)
		1201	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		1202	}
		1203
		1204	/*****************************************************************************/
		1205
798	static WL childs [EV_PID_HASHSIZE];	1206	static WL childs [EV_PID_HASHSIZE];
799		1207
800	#ifndef _WIN32	1208	#ifndef _WIN32
801		1209
802	static ev_signal childev;	1210	static ev_signal childev;
803		1211
804	void inline_speed	1212	#ifndef WIFCONTINUED
		1213	# define WIFCONTINUED(status) 0
		1214	#endif
		1215
		1216	/* handle a single child status event */
		1217	inline_speed void
805	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	1218	child_reap (EV_P_ int chain, int pid, int status)
806	{	1219	{
807	ev_child *w;	1220	ev_child *w;
		1221	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
808		1222
809	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1223	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1224	{
810	if (w->pid == pid || !w->pid)	1225	if ((w->pid == pid || !w->pid)
		1226	&& (!traced || (w->flags & 1)))
811	{	1227	{
812	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */	1228	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
813	w->rpid = pid;	1229	w->rpid = pid;
814	w->rstatus = status;	1230	w->rstatus = status;
815	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1231	ev_feed_event (EV_A_ (W)w, EV_CHILD);
816	}	1232	}
		1233	}
817	}	1234	}
818		1235
819	#ifndef WCONTINUED	1236	#ifndef WCONTINUED
820	# define WCONTINUED 0	1237	# define WCONTINUED 0
821	#endif	1238	#endif
822		1239
		1240	/* called on sigchld etc., calls waitpid */
823	static void	1241	static void
824	childcb (EV_P_ ev_signal *sw, int revents)	1242	childcb (EV_P_ ev_signal *sw, int revents)
825	{	1243	{
826	int pid, status;	1244	int pid, status;
827		1245
…		…
830	if (!WCONTINUED	1248	if (!WCONTINUED
831	|| errno != EINVAL	1249	|| errno != EINVAL
832	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))	1250	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
833	return;	1251	return;
834		1252
835	/* make sure we are called again until all childs have been reaped */	1253	/* make sure we are called again until all children have been reaped */
836	/* we need to do it this way so that the callback gets called before we continue */	1254	/* we need to do it this way so that the callback gets called before we continue */
837	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1255	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
838		1256
839	child_reap (EV_A_ sw, pid, pid, status);	1257	child_reap (EV_A_ pid, pid, status);
840	if (EV_PID_HASHSIZE > 1)	1258	if (EV_PID_HASHSIZE > 1)
841	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1259	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
842	}	1260	}
843		1261
844	#endif	1262	#endif
845		1263
846	/*****************************************************************************/	1264	/*****************************************************************************/
…		…
908	/* kqueue is borked on everything but netbsd apparently */	1326	/* kqueue is borked on everything but netbsd apparently */
909	/* it usually doesn't work correctly on anything but sockets and pipes */	1327	/* it usually doesn't work correctly on anything but sockets and pipes */
910	flags &= ~EVBACKEND_KQUEUE;	1328	flags &= ~EVBACKEND_KQUEUE;
911	#endif	1329	#endif
912	#ifdef __APPLE__	1330	#ifdef __APPLE__
913	// flags &= ~EVBACKEND_KQUEUE; for documentation	1331	/* only select works correctly on that "unix-certified" platform */
914	flags &= ~EVBACKEND_POLL;	1332	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1333	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
915	#endif	1334	#endif
916		1335
917	return flags;	1336	return flags;
918	}	1337	}
919		1338
920	unsigned int	1339	unsigned int
921	ev_embeddable_backends (void)	1340	ev_embeddable_backends (void)
922	{	1341	{
923	return EVBACKEND_EPOLL	1342	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
924	| EVBACKEND_KQUEUE	1343
925	| EVBACKEND_PORT;	1344	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1345	/* please fix it and tell me how to detect the fix */
		1346	flags &= ~EVBACKEND_EPOLL;
		1347
		1348	return flags;
926	}	1349	}
927		1350
928	unsigned int	1351	unsigned int
929	ev_backend (EV_P)	1352	ev_backend (EV_P)
930	{	1353	{
…		…
935	ev_loop_count (EV_P)	1358	ev_loop_count (EV_P)
936	{	1359	{
937	return loop_count;	1360	return loop_count;
938	}	1361	}
939		1362
		1363	void
		1364	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1365	{
		1366	io_blocktime = interval;
		1367	}
		1368
		1369	void
		1370	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1371	{
		1372	timeout_blocktime = interval;
		1373	}
		1374
		1375	/* initialise a loop structure, must be zero-initialised */
940	static void noinline	1376	static void noinline
941	loop_init (EV_P_ unsigned int flags)	1377	loop_init (EV_P_ unsigned int flags)
942	{	1378	{
943	if (!backend)	1379	if (!backend)
944	{	1380	{
		1381	#if EV_USE_REALTIME
		1382	if (!have_realtime)
		1383	{
		1384	struct timespec ts;
		1385
		1386	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1387	have_realtime = 1;
		1388	}
		1389	#endif
		1390
945	#if EV_USE_MONOTONIC	1391	#if EV_USE_MONOTONIC
		1392	if (!have_monotonic)
946	{	1393	{
947	struct timespec ts;	1394	struct timespec ts;
		1395
948	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1396	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
949	have_monotonic = 1;	1397	have_monotonic = 1;
950	}	1398	}
951	#endif	1399	#endif
952		1400
953	ev_rt_now = ev_time ();	1401	ev_rt_now = ev_time ();
954	mn_now = get_clock ();	1402	mn_now = get_clock ();
955	now_floor = mn_now;	1403	now_floor = mn_now;
956	rtmn_diff = ev_rt_now - mn_now;	1404	rtmn_diff = ev_rt_now - mn_now;
		1405
		1406	io_blocktime = 0.;
		1407	timeout_blocktime = 0.;
		1408	backend = 0;
		1409	backend_fd = -1;
		1410	gotasync = 0;
		1411	#if EV_USE_INOTIFY
		1412	fs_fd = -2;
		1413	#endif
957		1414
958	/* pid check not overridable via env */	1415	/* pid check not overridable via env */
959	#ifndef _WIN32	1416	#ifndef _WIN32
960	if (flags & EVFLAG_FORKCHECK)	1417	if (flags & EVFLAG_FORKCHECK)
961	curpid = getpid ();	1418	curpid = getpid ();
…		…
964	if (!(flags & EVFLAG_NOENV)	1421	if (!(flags & EVFLAG_NOENV)
965	&& !enable_secure ()	1422	&& !enable_secure ()
966	&& getenv ("LIBEV_FLAGS"))	1423	&& getenv ("LIBEV_FLAGS"))
967	flags = atoi (getenv ("LIBEV_FLAGS"));	1424	flags = atoi (getenv ("LIBEV_FLAGS"));
968		1425
969	if (!(flags & 0x0000ffffUL))	1426	if (!(flags & 0x0000ffffU))
970	flags |= ev_recommended_backends ();	1427	flags |= ev_recommended_backends ();
971
972	backend = 0;
973	backend_fd = -1;
974	#if EV_USE_INOTIFY
975	fs_fd = -2;
976	#endif
977		1428
978	#if EV_USE_PORT	1429	#if EV_USE_PORT
979	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1430	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
980	#endif	1431	#endif
981	#if EV_USE_KQUEUE	1432	#if EV_USE_KQUEUE
…		…
989	#endif	1440	#endif
990	#if EV_USE_SELECT	1441	#if EV_USE_SELECT
991	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1442	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
992	#endif	1443	#endif
993		1444
		1445	ev_prepare_init (&pending_w, pendingcb);
		1446
994	ev_init (&sigev, sigcb);	1447	ev_init (&pipe_w, pipecb);
995	ev_set_priority (&sigev, EV_MAXPRI);	1448	ev_set_priority (&pipe_w, EV_MAXPRI);
996	}	1449	}
997	}	1450	}
998		1451
		1452	/* free up a loop structure */
999	static void noinline	1453	static void noinline
1000	loop_destroy (EV_P)	1454	loop_destroy (EV_P)
1001	{	1455	{
1002	int i;	1456	int i;
		1457
		1458	if (ev_is_active (&pipe_w))
		1459	{
		1460	ev_ref (EV_A); /* signal watcher */
		1461	ev_io_stop (EV_A_ &pipe_w);
		1462
		1463	#if EV_USE_EVENTFD
		1464	if (evfd >= 0)
		1465	close (evfd);
		1466	#endif
		1467
		1468	if (evpipe [0] >= 0)
		1469	{
		1470	close (evpipe [0]);
		1471	close (evpipe [1]);
		1472	}
		1473	}
1003		1474
1004	#if EV_USE_INOTIFY	1475	#if EV_USE_INOTIFY
1005	if (fs_fd >= 0)	1476	if (fs_fd >= 0)
1006	close (fs_fd);	1477	close (fs_fd);
1007	#endif	1478	#endif
…		…
1031	#if EV_IDLE_ENABLE	1502	#if EV_IDLE_ENABLE
1032	array_free (idle, [i]);	1503	array_free (idle, [i]);
1033	#endif	1504	#endif
1034	}	1505	}
1035		1506
		1507	ev_free (anfds); anfdmax = 0;
		1508
1036	/* have to use the microsoft-never-gets-it-right macro */	1509	/* have to use the microsoft-never-gets-it-right macro */
		1510	array_free (rfeed, EMPTY);
1037	array_free (fdchange, EMPTY);	1511	array_free (fdchange, EMPTY);
1038	array_free (timer, EMPTY);	1512	array_free (timer, EMPTY);
1039	#if EV_PERIODIC_ENABLE	1513	#if EV_PERIODIC_ENABLE
1040	array_free (periodic, EMPTY);	1514	array_free (periodic, EMPTY);
1041	#endif	1515	#endif
		1516	#if EV_FORK_ENABLE
		1517	array_free (fork, EMPTY);
		1518	#endif
1042	array_free (prepare, EMPTY);	1519	array_free (prepare, EMPTY);
1043	array_free (check, EMPTY);	1520	array_free (check, EMPTY);
		1521	#if EV_ASYNC_ENABLE
		1522	array_free (async, EMPTY);
		1523	#endif
1044		1524
1045	backend = 0;	1525	backend = 0;
1046	}	1526	}
1047		1527
		1528	#if EV_USE_INOTIFY
1048	void inline_size infy_fork (EV_P);	1529	inline_size void infy_fork (EV_P);
		1530	#endif
1049		1531
1050	void inline_size	1532	inline_size void
1051	loop_fork (EV_P)	1533	loop_fork (EV_P)
1052	{	1534	{
1053	#if EV_USE_PORT	1535	#if EV_USE_PORT
1054	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1536	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1055	#endif	1537	#endif
…		…
1061	#endif	1543	#endif
1062	#if EV_USE_INOTIFY	1544	#if EV_USE_INOTIFY
1063	infy_fork (EV_A);	1545	infy_fork (EV_A);
1064	#endif	1546	#endif
1065		1547
1066	if (ev_is_active (&sigev))	1548	if (ev_is_active (&pipe_w))
1067	{	1549	{
1068	/* default loop */	1550	/* this "locks" the handlers against writing to the pipe */
		1551	/* while we modify the fd vars */
		1552	gotsig = 1;
		1553	#if EV_ASYNC_ENABLE
		1554	gotasync = 1;
		1555	#endif
1069		1556
1070	ev_ref (EV_A);	1557	ev_ref (EV_A);
1071	ev_io_stop (EV_A_ &sigev);	1558	ev_io_stop (EV_A_ &pipe_w);
		1559
		1560	#if EV_USE_EVENTFD
		1561	if (evfd >= 0)
		1562	close (evfd);
		1563	#endif
		1564
		1565	if (evpipe [0] >= 0)
		1566	{
1072	close (sigpipe [0]);	1567	close (evpipe [0]);
1073	close (sigpipe [1]);	1568	close (evpipe [1]);
		1569	}
1074		1570
1075	while (pipe (sigpipe))
1076	syserr ("(libev) error creating pipe");
1077
1078	siginit (EV_A);	1571	evpipe_init (EV_A);
		1572	/* now iterate over everything, in case we missed something */
		1573	pipecb (EV_A_ &pipe_w, EV_READ);
1079	}	1574	}
1080		1575
1081	postfork = 0;	1576	postfork = 0;
1082	}	1577	}
1083		1578
1084	#if EV_MULTIPLICITY	1579	#if EV_MULTIPLICITY
		1580
1085	struct ev_loop *	1581	struct ev_loop *
1086	ev_loop_new (unsigned int flags)	1582	ev_loop_new (unsigned int flags)
1087	{	1583	{
1088	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1584	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1089		1585
…		…
1105	}	1601	}
1106		1602
1107	void	1603	void
1108	ev_loop_fork (EV_P)	1604	ev_loop_fork (EV_P)
1109	{	1605	{
1110	postfork = 1;	1606	postfork = 1; /* must be in line with ev_default_fork */
1111	}	1607	}
1112		1608
		1609	#if EV_VERIFY
		1610	static void noinline
		1611	verify_watcher (EV_P_ W w)
		1612	{
		1613	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1614
		1615	if (w->pending)
		1616	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1617	}
		1618
		1619	static void noinline
		1620	verify_heap (EV_P_ ANHE *heap, int N)
		1621	{
		1622	int i;
		1623
		1624	for (i = HEAP0; i < N + HEAP0; ++i)
		1625	{
		1626	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1627	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1628	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1629
		1630	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1631	}
		1632	}
		1633
		1634	static void noinline
		1635	array_verify (EV_P_ W *ws, int cnt)
		1636	{
		1637	while (cnt--)
		1638	{
		1639	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1640	verify_watcher (EV_A_ ws [cnt]);
		1641	}
		1642	}
		1643	#endif
		1644
		1645	void
		1646	ev_loop_verify (EV_P)
		1647	{
		1648	#if EV_VERIFY
		1649	int i;
		1650	WL w;
		1651
		1652	assert (activecnt >= -1);
		1653
		1654	assert (fdchangemax >= fdchangecnt);
		1655	for (i = 0; i < fdchangecnt; ++i)
		1656	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1657
		1658	assert (anfdmax >= 0);
		1659	for (i = 0; i < anfdmax; ++i)
		1660	for (w = anfds [i].head; w; w = w->next)
		1661	{
		1662	verify_watcher (EV_A_ (W)w);
		1663	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1664	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1665	}
		1666
		1667	assert (timermax >= timercnt);
		1668	verify_heap (EV_A_ timers, timercnt);
		1669
		1670	#if EV_PERIODIC_ENABLE
		1671	assert (periodicmax >= periodiccnt);
		1672	verify_heap (EV_A_ periodics, periodiccnt);
		1673	#endif
		1674
		1675	for (i = NUMPRI; i--; )
		1676	{
		1677	assert (pendingmax [i] >= pendingcnt [i]);
		1678	#if EV_IDLE_ENABLE
		1679	assert (idleall >= 0);
		1680	assert (idlemax [i] >= idlecnt [i]);
		1681	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1682	#endif
		1683	}
		1684
		1685	#if EV_FORK_ENABLE
		1686	assert (forkmax >= forkcnt);
		1687	array_verify (EV_A_ (W *)forks, forkcnt);
		1688	#endif
		1689
		1690	#if EV_ASYNC_ENABLE
		1691	assert (asyncmax >= asynccnt);
		1692	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1693	#endif
		1694
		1695	assert (preparemax >= preparecnt);
		1696	array_verify (EV_A_ (W *)prepares, preparecnt);
		1697
		1698	assert (checkmax >= checkcnt);
		1699	array_verify (EV_A_ (W *)checks, checkcnt);
		1700
		1701	# if 0
		1702	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1703	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1113	#endif	1704	# endif
		1705	#endif
		1706	}
		1707
		1708	#endif /* multiplicity */
1114		1709
1115	#if EV_MULTIPLICITY	1710	#if EV_MULTIPLICITY
1116	struct ev_loop *	1711	struct ev_loop *
1117	ev_default_loop_init (unsigned int flags)	1712	ev_default_loop_init (unsigned int flags)
1118	#else	1713	#else
1119	int	1714	int
1120	ev_default_loop (unsigned int flags)	1715	ev_default_loop (unsigned int flags)
1121	#endif	1716	#endif
1122	{	1717	{
1123	if (sigpipe [0] == sigpipe [1])
1124	if (pipe (sigpipe))
1125	return 0;
1126
1127	if (!ev_default_loop_ptr)	1718	if (!ev_default_loop_ptr)
1128	{	1719	{
1129	#if EV_MULTIPLICITY	1720	#if EV_MULTIPLICITY
1130	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1721	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1131	#else	1722	#else
…		…
1134		1725
1135	loop_init (EV_A_ flags);	1726	loop_init (EV_A_ flags);
1136		1727
1137	if (ev_backend (EV_A))	1728	if (ev_backend (EV_A))
1138	{	1729	{
1139	siginit (EV_A);
1140
1141	#ifndef _WIN32	1730	#ifndef _WIN32
1142	ev_signal_init (&childev, childcb, SIGCHLD);	1731	ev_signal_init (&childev, childcb, SIGCHLD);
1143	ev_set_priority (&childev, EV_MAXPRI);	1732	ev_set_priority (&childev, EV_MAXPRI);
1144	ev_signal_start (EV_A_ &childev);	1733	ev_signal_start (EV_A_ &childev);
1145	ev_unref (EV_A); /* child watcher should not keep loop alive */	1734	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1157	{	1746	{
1158	#if EV_MULTIPLICITY	1747	#if EV_MULTIPLICITY
1159	struct ev_loop *loop = ev_default_loop_ptr;	1748	struct ev_loop *loop = ev_default_loop_ptr;
1160	#endif	1749	#endif
1161		1750
		1751	ev_default_loop_ptr = 0;
		1752
1162	#ifndef _WIN32	1753	#ifndef _WIN32
1163	ev_ref (EV_A); /* child watcher */	1754	ev_ref (EV_A); /* child watcher */
1164	ev_signal_stop (EV_A_ &childev);	1755	ev_signal_stop (EV_A_ &childev);
1165	#endif	1756	#endif
1166		1757
1167	ev_ref (EV_A); /* signal watcher */
1168	ev_io_stop (EV_A_ &sigev);
1169
1170	close (sigpipe [0]); sigpipe [0] = 0;
1171	close (sigpipe [1]); sigpipe [1] = 0;
1172
1173	loop_destroy (EV_A);	1758	loop_destroy (EV_A);
1174	}	1759	}
1175		1760
1176	void	1761	void
1177	ev_default_fork (void)	1762	ev_default_fork (void)
1178	{	1763	{
1179	#if EV_MULTIPLICITY	1764	#if EV_MULTIPLICITY
1180	struct ev_loop *loop = ev_default_loop_ptr;	1765	struct ev_loop *loop = ev_default_loop_ptr;
1181	#endif	1766	#endif
1182		1767
1183	if (backend)	1768	postfork = 1; /* must be in line with ev_loop_fork */
1184	postfork = 1;
1185	}	1769	}
1186		1770
1187	/*****************************************************************************/	1771	/*****************************************************************************/
1188		1772
1189	void	1773	void
1190	ev_invoke (EV_P_ void *w, int revents)	1774	ev_invoke (EV_P_ void *w, int revents)
1191	{	1775	{
1192	EV_CB_INVOKE ((W)w, revents);	1776	EV_CB_INVOKE ((W)w, revents);
1193	}	1777	}
1194		1778
1195	void inline_speed	1779	inline_speed void
1196	call_pending (EV_P)	1780	call_pending (EV_P)
1197	{	1781	{
1198	int pri;	1782	int pri;
1199		1783
1200	for (pri = NUMPRI; pri--; )	1784	for (pri = NUMPRI; pri--; )
1201	while (pendingcnt [pri])	1785	while (pendingcnt [pri])
1202	{	1786	{
1203	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1787	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1204		1788
1205	if (expect_true (p->w))
1206	{
1207	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1789	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1790	/* ^ this is no longer true, as pending_w could be here */
1208		1791
1209	p->w->pending = 0;	1792	p->w->pending = 0;
1210	EV_CB_INVOKE (p->w, p->events);	1793	EV_CB_INVOKE (p->w, p->events);
1211	}	1794	EV_FREQUENT_CHECK;
1212	}	1795	}
1213	}	1796	}
1214		1797
1215	void inline_size
1216	timers_reify (EV_P)
1217	{
1218	while (timercnt && ((WT)timers [0])->at <= mn_now)
1219	{
1220	ev_timer *w = (ev_timer *)timers [0];
1221
1222	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1223
1224	/* first reschedule or stop timer */
1225	if (w->repeat)
1226	{
1227	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1228
1229	((WT)w)->at += w->repeat;
1230	if (((WT)w)->at < mn_now)
1231	((WT)w)->at = mn_now;
1232
1233	downheap (timers, timercnt, 0);
1234	}
1235	else
1236	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1237
1238	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1239	}
1240	}
1241
1242	#if EV_PERIODIC_ENABLE
1243	void inline_size
1244	periodics_reify (EV_P)
1245	{
1246	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1247	{
1248	ev_periodic *w = (ev_periodic *)periodics [0];
1249
1250	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1251
1252	/* first reschedule or stop timer */
1253	if (w->reschedule_cb)
1254	{
1255	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1256	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1257	downheap (periodics, periodiccnt, 0);
1258	}
1259	else if (w->interval)
1260	{
1261	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1262	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1263	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1264	downheap (periodics, periodiccnt, 0);
1265	}
1266	else
1267	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1268
1269	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1270	}
1271	}
1272
1273	static void noinline
1274	periodics_reschedule (EV_P)
1275	{
1276	int i;
1277
1278	/* adjust periodics after time jump */
1279	for (i = 0; i < periodiccnt; ++i)
1280	{
1281	ev_periodic *w = (ev_periodic *)periodics [i];
1282
1283	if (w->reschedule_cb)
1284	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1285	else if (w->interval)
1286	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1287	}
1288
1289	/* now rebuild the heap */
1290	for (i = periodiccnt >> 1; i--; )
1291	downheap (periodics, periodiccnt, i);
1292	}
1293	#endif
1294
1295	#if EV_IDLE_ENABLE	1798	#if EV_IDLE_ENABLE
1296	void inline_size	1799	/* make idle watchers pending. this handles the "call-idle */
		1800	/* only when higher priorities are idle" logic */
		1801	inline_size void
1297	idle_reify (EV_P)	1802	idle_reify (EV_P)
1298	{	1803	{
1299	if (expect_false (idleall))	1804	if (expect_false (idleall))
1300	{	1805	{
1301	int pri;	1806	int pri;
…		…
1313	}	1818	}
1314	}	1819	}
1315	}	1820	}
1316	#endif	1821	#endif
1317		1822
1318	void inline_speed	1823	/* make timers pending */
		1824	inline_size void
		1825	timers_reify (EV_P)
		1826	{
		1827	EV_FREQUENT_CHECK;
		1828
		1829	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		1830	{
		1831	do
		1832	{
		1833	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1834
		1835	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1836
		1837	/* first reschedule or stop timer */
		1838	if (w->repeat)
		1839	{
		1840	ev_at (w) += w->repeat;
		1841	if (ev_at (w) < mn_now)
		1842	ev_at (w) = mn_now;
		1843
		1844	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1845
		1846	ANHE_at_cache (timers [HEAP0]);
		1847	downheap (timers, timercnt, HEAP0);
		1848	}
		1849	else
		1850	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1851
		1852	EV_FREQUENT_CHECK;
		1853	feed_reverse (EV_A_ (W)w);
		1854	}
		1855	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
		1856
		1857	feed_reverse_done (EV_A_ EV_TIMEOUT);
		1858	}
		1859	}
		1860
		1861	#if EV_PERIODIC_ENABLE
		1862	/* make periodics pending */
		1863	inline_size void
		1864	periodics_reify (EV_P)
		1865	{
		1866	EV_FREQUENT_CHECK;
		1867
		1868	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		1869	{
		1870	int feed_count = 0;
		1871
		1872	do
		1873	{
		1874	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1875
		1876	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1877
		1878	/* first reschedule or stop timer */
		1879	if (w->reschedule_cb)
		1880	{
		1881	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1882
		1883	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		1884
		1885	ANHE_at_cache (periodics [HEAP0]);
		1886	downheap (periodics, periodiccnt, HEAP0);
		1887	}
		1888	else if (w->interval)
		1889	{
		1890	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1891	/* if next trigger time is not sufficiently in the future, put it there */
		1892	/* this might happen because of floating point inexactness */
		1893	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1894	{
		1895	ev_at (w) += w->interval;
		1896
		1897	/* if interval is unreasonably low we might still have a time in the past */
		1898	/* so correct this. this will make the periodic very inexact, but the user */
		1899	/* has effectively asked to get triggered more often than possible */
		1900	if (ev_at (w) < ev_rt_now)
		1901	ev_at (w) = ev_rt_now;
		1902	}
		1903
		1904	ANHE_at_cache (periodics [HEAP0]);
		1905	downheap (periodics, periodiccnt, HEAP0);
		1906	}
		1907	else
		1908	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1909
		1910	EV_FREQUENT_CHECK;
		1911	feed_reverse (EV_A_ (W)w);
		1912	}
		1913	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
		1914
		1915	feed_reverse_done (EV_A_ EV_PERIODIC);
		1916	}
		1917	}
		1918
		1919	/* simply recalculate all periodics */
		1920	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
		1921	static void noinline
		1922	periodics_reschedule (EV_P)
		1923	{
		1924	int i;
		1925
		1926	/* adjust periodics after time jump */
		1927	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		1928	{
		1929	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		1930
		1931	if (w->reschedule_cb)
		1932	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1933	else if (w->interval)
		1934	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1935
		1936	ANHE_at_cache (periodics [i]);
		1937	}
		1938
		1939	reheap (periodics, periodiccnt);
		1940	}
		1941	#endif
		1942
		1943	/* adjust all timers by a given offset */
		1944	static void noinline
		1945	timers_reschedule (EV_P_ ev_tstamp adjust)
		1946	{
		1947	int i;
		1948
		1949	for (i = 0; i < timercnt; ++i)
		1950	{
		1951	ANHE *he = timers + i + HEAP0;
		1952	ANHE_w (*he)->at += adjust;
		1953	ANHE_at_cache (*he);
		1954	}
		1955	}
		1956
		1957	/* fetch new monotonic and realtime times from the kernel */
		1958	/* also detetc if there was a timejump, and act accordingly */
		1959	inline_speed void
1319	time_update (EV_P_ ev_tstamp max_block)	1960	time_update (EV_P_ ev_tstamp max_block)
1320	{	1961	{
1321	int i;
1322
1323	#if EV_USE_MONOTONIC	1962	#if EV_USE_MONOTONIC
1324	if (expect_true (have_monotonic))	1963	if (expect_true (have_monotonic))
1325	{	1964	{
		1965	int i;
1326	ev_tstamp odiff = rtmn_diff;	1966	ev_tstamp odiff = rtmn_diff;
1327		1967
1328	mn_now = get_clock ();	1968	mn_now = get_clock ();
1329		1969
1330	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	1970	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1348	*/	1988	*/
1349	for (i = 4; --i; )	1989	for (i = 4; --i; )
1350	{	1990	{
1351	rtmn_diff = ev_rt_now - mn_now;	1991	rtmn_diff = ev_rt_now - mn_now;
1352		1992
1353	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1993	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1354	return; /* all is well */	1994	return; /* all is well */
1355		1995
1356	ev_rt_now = ev_time ();	1996	ev_rt_now = ev_time ();
1357	mn_now = get_clock ();	1997	mn_now = get_clock ();
1358	now_floor = mn_now;	1998	now_floor = mn_now;
1359	}	1999	}
1360		2000
		2001	/* no timer adjustment, as the monotonic clock doesn't jump */
		2002	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1361	# if EV_PERIODIC_ENABLE	2003	# if EV_PERIODIC_ENABLE
1362	periodics_reschedule (EV_A);	2004	periodics_reschedule (EV_A);
1363	# endif	2005	# endif
1364	/* no timer adjustment, as the monotonic clock doesn't jump */
1365	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1366	}	2006	}
1367	else	2007	else
1368	#endif	2008	#endif
1369	{	2009	{
1370	ev_rt_now = ev_time ();	2010	ev_rt_now = ev_time ();
1371		2011
1372	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2012	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1373	{	2013	{
		2014	/* adjust timers. this is easy, as the offset is the same for all of them */
		2015	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1374	#if EV_PERIODIC_ENABLE	2016	#if EV_PERIODIC_ENABLE
1375	periodics_reschedule (EV_A);	2017	periodics_reschedule (EV_A);
1376	#endif	2018	#endif
1377	/* adjust timers. this is easy, as the offset is the same for all of them */
1378	for (i = 0; i < timercnt; ++i)
1379	((WT)timers [i])->at += ev_rt_now - mn_now;
1380	}	2019	}
1381		2020
1382	mn_now = ev_rt_now;	2021	mn_now = ev_rt_now;
1383	}	2022	}
1384	}	2023	}
1385		2024
1386	void
1387	ev_ref (EV_P)
1388	{
1389	++activecnt;
1390	}
1391
1392	void
1393	ev_unref (EV_P)
1394	{
1395	--activecnt;
1396	}
1397
1398	static int loop_done;	2025	static int loop_done;
1399		2026
1400	void	2027	void
1401	ev_loop (EV_P_ int flags)	2028	ev_loop (EV_P_ int flags)
1402	{	2029	{
1403	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	2030	loop_done = EVUNLOOP_CANCEL;
1404	? EVUNLOOP_ONE
1405	: EVUNLOOP_CANCEL;
1406		2031
1407	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2032	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1408		2033
1409	do	2034	do
1410	{	2035	{
		2036	#if EV_VERIFY >= 2
		2037	ev_loop_verify (EV_A);
		2038	#endif
		2039
1411	#ifndef _WIN32	2040	#ifndef _WIN32
1412	if (expect_false (curpid)) /* penalise the forking check even more */	2041	if (expect_false (curpid)) /* penalise the forking check even more */
1413	if (expect_false (getpid () != curpid))	2042	if (expect_false (getpid () != curpid))
1414	{	2043	{
1415	curpid = getpid ();	2044	curpid = getpid ();
…		…
1432	{	2061	{
1433	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2062	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1434	call_pending (EV_A);	2063	call_pending (EV_A);
1435	}	2064	}
1436		2065
1437	if (expect_false (!activecnt))
1438	break;
1439
1440	/* we might have forked, so reify kernel state if necessary */	2066	/* we might have forked, so reify kernel state if necessary */
1441	if (expect_false (postfork))	2067	if (expect_false (postfork))
1442	loop_fork (EV_A);	2068	loop_fork (EV_A);
1443		2069
1444	/* update fd-related kernel structures */	2070	/* update fd-related kernel structures */
1445	fd_reify (EV_A);	2071	fd_reify (EV_A);
1446		2072
1447	/* calculate blocking time */	2073	/* calculate blocking time */
1448	{	2074	{
1449	ev_tstamp block;	2075	ev_tstamp waittime = 0.;
		2076	ev_tstamp sleeptime = 0.;
1450		2077
1451	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))	2078	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1452	block = 0.; /* do not block at all */
1453	else
1454	{	2079	{
		2080	/* remember old timestamp for io_blocktime calculation */
		2081	ev_tstamp prev_mn_now = mn_now;
		2082
1455	/* update time to cancel out callback processing overhead */	2083	/* update time to cancel out callback processing overhead */
1456	time_update (EV_A_ 1e100);	2084	time_update (EV_A_ 1e100);
1457		2085
1458	block = MAX_BLOCKTIME;	2086	waittime = MAX_BLOCKTIME;
1459		2087
1460	if (timercnt)	2088	if (timercnt)
1461	{	2089	{
1462	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	2090	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1463	if (block > to) block = to;	2091	if (waittime > to) waittime = to;
1464	}	2092	}
1465		2093
1466	#if EV_PERIODIC_ENABLE	2094	#if EV_PERIODIC_ENABLE
1467	if (periodiccnt)	2095	if (periodiccnt)
1468	{	2096	{
1469	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	2097	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1470	if (block > to) block = to;	2098	if (waittime > to) waittime = to;
1471	}	2099	}
1472	#endif	2100	#endif
1473		2101
		2102	/* don't let timeouts decrease the waittime below timeout_blocktime */
		2103	if (expect_false (waittime < timeout_blocktime))
		2104	waittime = timeout_blocktime;
		2105
		2106	/* extra check because io_blocktime is commonly 0 */
1474	if (expect_false (block < 0.)) block = 0.;	2107	if (expect_false (io_blocktime))
		2108	{
		2109	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2110
		2111	if (sleeptime > waittime - backend_fudge)
		2112	sleeptime = waittime - backend_fudge;
		2113
		2114	if (expect_true (sleeptime > 0.))
		2115	{
		2116	ev_sleep (sleeptime);
		2117	waittime -= sleeptime;
		2118	}
		2119	}
1475	}	2120	}
1476		2121
1477	++loop_count;	2122	++loop_count;
1478	backend_poll (EV_A_ block);	2123	backend_poll (EV_A_ waittime);
1479		2124
1480	/* update ev_rt_now, do magic */	2125	/* update ev_rt_now, do magic */
1481	time_update (EV_A_ block);	2126	time_update (EV_A_ waittime + sleeptime);
1482	}	2127	}
1483		2128
1484	/* queue pending timers and reschedule them */	2129	/* queue pending timers and reschedule them */
1485	timers_reify (EV_A); /* relative timers called last */	2130	timers_reify (EV_A); /* relative timers called last */
1486	#if EV_PERIODIC_ENABLE	2131	#if EV_PERIODIC_ENABLE
…		…
1495	/* queue check watchers, to be executed first */	2140	/* queue check watchers, to be executed first */
1496	if (expect_false (checkcnt))	2141	if (expect_false (checkcnt))
1497	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2142	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1498		2143
1499	call_pending (EV_A);	2144	call_pending (EV_A);
1500
1501	}	2145	}
1502	while (expect_true (activecnt && !loop_done));	2146	while (expect_true (
		2147	activecnt
		2148	&& !loop_done
		2149	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		2150	));
1503		2151
1504	if (loop_done == EVUNLOOP_ONE)	2152	if (loop_done == EVUNLOOP_ONE)
1505	loop_done = EVUNLOOP_CANCEL;	2153	loop_done = EVUNLOOP_CANCEL;
1506	}	2154	}
1507		2155
…		…
1509	ev_unloop (EV_P_ int how)	2157	ev_unloop (EV_P_ int how)
1510	{	2158	{
1511	loop_done = how;	2159	loop_done = how;
1512	}	2160	}
1513		2161
		2162	void
		2163	ev_ref (EV_P)
		2164	{
		2165	++activecnt;
		2166	}
		2167
		2168	void
		2169	ev_unref (EV_P)
		2170	{
		2171	--activecnt;
		2172	}
		2173
		2174	void
		2175	ev_now_update (EV_P)
		2176	{
		2177	time_update (EV_A_ 1e100);
		2178	}
		2179
		2180	void
		2181	ev_suspend (EV_P)
		2182	{
		2183	ev_now_update (EV_A);
		2184	}
		2185
		2186	void
		2187	ev_resume (EV_P)
		2188	{
		2189	ev_tstamp mn_prev = mn_now;
		2190
		2191	ev_now_update (EV_A);
		2192	timers_reschedule (EV_A_ mn_now - mn_prev);
		2193	#if EV_PERIODIC_ENABLE
		2194	/* TODO: really do this? */
		2195	periodics_reschedule (EV_A);
		2196	#endif
		2197	}
		2198
1514	/*****************************************************************************/	2199	/*****************************************************************************/
		2200	/* singly-linked list management, used when the expected list length is short */
1515		2201
1516	void inline_size	2202	inline_size void
1517	wlist_add (WL *head, WL elem)	2203	wlist_add (WL *head, WL elem)
1518	{	2204	{
1519	elem->next = *head;	2205	elem->next = *head;
1520	*head = elem;	2206	*head = elem;
1521	}	2207	}
1522		2208
1523	void inline_size	2209	inline_size void
1524	wlist_del (WL *head, WL elem)	2210	wlist_del (WL *head, WL elem)
1525	{	2211	{
1526	while (*head)	2212	while (*head)
1527	{	2213	{
1528	if (*head == elem)	2214	if (*head == elem)
…		…
1533		2219
1534	head = &(*head)->next;	2220	head = &(*head)->next;
1535	}	2221	}
1536	}	2222	}
1537		2223
1538	void inline_speed	2224	/* internal, faster, version of ev_clear_pending */
		2225	inline_speed void
1539	clear_pending (EV_P_ W w)	2226	clear_pending (EV_P_ W w)
1540	{	2227	{
1541	if (w->pending)	2228	if (w->pending)
1542	{	2229	{
1543	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2230	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1544	w->pending = 0;	2231	w->pending = 0;
1545	}	2232	}
1546	}	2233	}
1547		2234
1548	int	2235	int
…		…
1552	int pending = w_->pending;	2239	int pending = w_->pending;
1553		2240
1554	if (expect_true (pending))	2241	if (expect_true (pending))
1555	{	2242	{
1556	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2243	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2244	p->w = (W)&pending_w;
1557	w_->pending = 0;	2245	w_->pending = 0;
1558	p->w = 0;
1559	return p->events;	2246	return p->events;
1560	}	2247	}
1561	else	2248	else
1562	return 0;	2249	return 0;
1563	}	2250	}
1564		2251
1565	void inline_size	2252	inline_size void
1566	pri_adjust (EV_P_ W w)	2253	pri_adjust (EV_P_ W w)
1567	{	2254	{
1568	int pri = w->priority;	2255	int pri = w->priority;
1569	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2256	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1570	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2257	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1571	w->priority = pri;	2258	w->priority = pri;
1572	}	2259	}
1573		2260
1574	void inline_speed	2261	inline_speed void
1575	ev_start (EV_P_ W w, int active)	2262	ev_start (EV_P_ W w, int active)
1576	{	2263	{
1577	pri_adjust (EV_A_ w);	2264	pri_adjust (EV_A_ w);
1578	w->active = active;	2265	w->active = active;
1579	ev_ref (EV_A);	2266	ev_ref (EV_A);
1580	}	2267	}
1581		2268
1582	void inline_size	2269	inline_size void
1583	ev_stop (EV_P_ W w)	2270	ev_stop (EV_P_ W w)
1584	{	2271	{
1585	ev_unref (EV_A);	2272	ev_unref (EV_A);
1586	w->active = 0;	2273	w->active = 0;
1587	}	2274	}
…		…
1594	int fd = w->fd;	2281	int fd = w->fd;
1595		2282
1596	if (expect_false (ev_is_active (w)))	2283	if (expect_false (ev_is_active (w)))
1597	return;	2284	return;
1598		2285
1599	assert (("ev_io_start called with negative fd", fd >= 0));	2286	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2287	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2288
		2289	EV_FREQUENT_CHECK;
1600		2290
1601	ev_start (EV_A_ (W)w, 1);	2291	ev_start (EV_A_ (W)w, 1);
1602	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2292	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1603	wlist_add (&anfds[fd].head, (WL)w);	2293	wlist_add (&anfds[fd].head, (WL)w);
1604		2294
1605	fd_change (EV_A_ fd, w->events & EV_IOFDSET);	2295	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
1606	w->events &= ~ EV_IOFDSET;	2296	w->events &= ~EV__IOFDSET;
		2297
		2298	EV_FREQUENT_CHECK;
1607	}	2299	}
1608		2300
1609	void noinline	2301	void noinline
1610	ev_io_stop (EV_P_ ev_io *w)	2302	ev_io_stop (EV_P_ ev_io *w)
1611	{	2303	{
1612	clear_pending (EV_A_ (W)w);	2304	clear_pending (EV_A_ (W)w);
1613	if (expect_false (!ev_is_active (w)))	2305	if (expect_false (!ev_is_active (w)))
1614	return;	2306	return;
1615		2307
1616	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2308	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2309
		2310	EV_FREQUENT_CHECK;
1617		2311
1618	wlist_del (&anfds[w->fd].head, (WL)w);	2312	wlist_del (&anfds[w->fd].head, (WL)w);
1619	ev_stop (EV_A_ (W)w);	2313	ev_stop (EV_A_ (W)w);
1620		2314
1621	fd_change (EV_A_ w->fd, 0);	2315	fd_change (EV_A_ w->fd, 1);
		2316
		2317	EV_FREQUENT_CHECK;
1622	}	2318	}
1623		2319
1624	void noinline	2320	void noinline
1625	ev_timer_start (EV_P_ ev_timer *w)	2321	ev_timer_start (EV_P_ ev_timer *w)
1626	{	2322	{
1627	if (expect_false (ev_is_active (w)))	2323	if (expect_false (ev_is_active (w)))
1628	return;	2324	return;
1629		2325
1630	((WT)w)->at += mn_now;	2326	ev_at (w) += mn_now;
1631		2327
1632	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2328	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1633		2329
		2330	EV_FREQUENT_CHECK;
		2331
		2332	++timercnt;
1634	ev_start (EV_A_ (W)w, ++timercnt);	2333	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1635	array_needsize (WT, timers, timermax, timercnt, EMPTY2);	2334	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1636	timers [timercnt - 1] = (WT)w;	2335	ANHE_w (timers [ev_active (w)]) = (WT)w;
1637	upheap (timers, timercnt - 1);	2336	ANHE_at_cache (timers [ev_active (w)]);
		2337	upheap (timers, ev_active (w));
1638		2338
		2339	EV_FREQUENT_CHECK;
		2340
1639	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	2341	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1640	}	2342	}
1641		2343
1642	void noinline	2344	void noinline
1643	ev_timer_stop (EV_P_ ev_timer *w)	2345	ev_timer_stop (EV_P_ ev_timer *w)
1644	{	2346	{
1645	clear_pending (EV_A_ (W)w);	2347	clear_pending (EV_A_ (W)w);
1646	if (expect_false (!ev_is_active (w)))	2348	if (expect_false (!ev_is_active (w)))
1647	return;	2349	return;
1648		2350
1649	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));	2351	EV_FREQUENT_CHECK;
1650		2352
1651	{	2353	{
1652	int active = ((W)w)->active;	2354	int active = ev_active (w);
1653		2355
		2356	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2357
		2358	--timercnt;
		2359
1654	if (expect_true (--active < --timercnt))	2360	if (expect_true (active < timercnt + HEAP0))
1655	{	2361	{
1656	timers [active] = timers [timercnt];	2362	timers [active] = timers [timercnt + HEAP0];
1657	adjustheap (timers, timercnt, active);	2363	adjustheap (timers, timercnt, active);
1658	}	2364	}
1659	}	2365	}
1660		2366
1661	((WT)w)->at -= mn_now;	2367	EV_FREQUENT_CHECK;
		2368
		2369	ev_at (w) -= mn_now;
1662		2370
1663	ev_stop (EV_A_ (W)w);	2371	ev_stop (EV_A_ (W)w);
1664	}	2372	}
1665		2373
1666	void noinline	2374	void noinline
1667	ev_timer_again (EV_P_ ev_timer *w)	2375	ev_timer_again (EV_P_ ev_timer *w)
1668	{	2376	{
		2377	EV_FREQUENT_CHECK;
		2378
1669	if (ev_is_active (w))	2379	if (ev_is_active (w))
1670	{	2380	{
1671	if (w->repeat)	2381	if (w->repeat)
1672	{	2382	{
1673	((WT)w)->at = mn_now + w->repeat;	2383	ev_at (w) = mn_now + w->repeat;
		2384	ANHE_at_cache (timers [ev_active (w)]);
1674	adjustheap (timers, timercnt, ((W)w)->active - 1);	2385	adjustheap (timers, timercnt, ev_active (w));
1675	}	2386	}
1676	else	2387	else
1677	ev_timer_stop (EV_A_ w);	2388	ev_timer_stop (EV_A_ w);
1678	}	2389	}
1679	else if (w->repeat)	2390	else if (w->repeat)
1680	{	2391	{
1681	w->at = w->repeat;	2392	ev_at (w) = w->repeat;
1682	ev_timer_start (EV_A_ w);	2393	ev_timer_start (EV_A_ w);
1683	}	2394	}
		2395
		2396	EV_FREQUENT_CHECK;
1684	}	2397	}
1685		2398
1686	#if EV_PERIODIC_ENABLE	2399	#if EV_PERIODIC_ENABLE
1687	void noinline	2400	void noinline
1688	ev_periodic_start (EV_P_ ev_periodic *w)	2401	ev_periodic_start (EV_P_ ev_periodic *w)
1689	{	2402	{
1690	if (expect_false (ev_is_active (w)))	2403	if (expect_false (ev_is_active (w)))
1691	return;	2404	return;
1692		2405
1693	if (w->reschedule_cb)	2406	if (w->reschedule_cb)
1694	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2407	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1695	else if (w->interval)	2408	else if (w->interval)
1696	{	2409	{
1697	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2410	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1698	/* this formula differs from the one in periodic_reify because we do not always round up */	2411	/* this formula differs from the one in periodic_reify because we do not always round up */
1699	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2412	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1700	}	2413	}
1701	else	2414	else
1702	((WT)w)->at = w->offset;	2415	ev_at (w) = w->offset;
1703		2416
		2417	EV_FREQUENT_CHECK;
		2418
		2419	++periodiccnt;
1704	ev_start (EV_A_ (W)w, ++periodiccnt);	2420	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1705	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);	2421	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1706	periodics [periodiccnt - 1] = (WT)w;	2422	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1707	upheap (periodics, periodiccnt - 1);	2423	ANHE_at_cache (periodics [ev_active (w)]);
		2424	upheap (periodics, ev_active (w));
1708		2425
		2426	EV_FREQUENT_CHECK;
		2427
1709	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	2428	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1710	}	2429	}
1711		2430
1712	void noinline	2431	void noinline
1713	ev_periodic_stop (EV_P_ ev_periodic *w)	2432	ev_periodic_stop (EV_P_ ev_periodic *w)
1714	{	2433	{
1715	clear_pending (EV_A_ (W)w);	2434	clear_pending (EV_A_ (W)w);
1716	if (expect_false (!ev_is_active (w)))	2435	if (expect_false (!ev_is_active (w)))
1717	return;	2436	return;
1718		2437
1719	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));	2438	EV_FREQUENT_CHECK;
1720		2439
1721	{	2440	{
1722	int active = ((W)w)->active;	2441	int active = ev_active (w);
1723		2442
		2443	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2444
		2445	--periodiccnt;
		2446
1724	if (expect_true (--active < --periodiccnt))	2447	if (expect_true (active < periodiccnt + HEAP0))
1725	{	2448	{
1726	periodics [active] = periodics [periodiccnt];	2449	periodics [active] = periodics [periodiccnt + HEAP0];
1727	adjustheap (periodics, periodiccnt, active);	2450	adjustheap (periodics, periodiccnt, active);
1728	}	2451	}
1729	}	2452	}
1730		2453
		2454	EV_FREQUENT_CHECK;
		2455
1731	ev_stop (EV_A_ (W)w);	2456	ev_stop (EV_A_ (W)w);
1732	}	2457	}
1733		2458
1734	void noinline	2459	void noinline
1735	ev_periodic_again (EV_P_ ev_periodic *w)	2460	ev_periodic_again (EV_P_ ev_periodic *w)
…		…
1746		2471
1747	void noinline	2472	void noinline
1748	ev_signal_start (EV_P_ ev_signal *w)	2473	ev_signal_start (EV_P_ ev_signal *w)
1749	{	2474	{
1750	#if EV_MULTIPLICITY	2475	#if EV_MULTIPLICITY
1751	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2476	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1752	#endif	2477	#endif
1753	if (expect_false (ev_is_active (w)))	2478	if (expect_false (ev_is_active (w)))
1754	return;	2479	return;
1755		2480
1756	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2481	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
		2482
		2483	evpipe_init (EV_A);
		2484
		2485	EV_FREQUENT_CHECK;
1757		2486
1758	{	2487	{
1759	#ifndef _WIN32	2488	#ifndef _WIN32
1760	sigset_t full, prev;	2489	sigset_t full, prev;
1761	sigfillset (&full);	2490	sigfillset (&full);
1762	sigprocmask (SIG_SETMASK, &full, &prev);	2491	sigprocmask (SIG_SETMASK, &full, &prev);
1763	#endif	2492	#endif
1764		2493
1765	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2494	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
1766		2495
1767	#ifndef _WIN32	2496	#ifndef _WIN32
1768	sigprocmask (SIG_SETMASK, &prev, 0);	2497	sigprocmask (SIG_SETMASK, &prev, 0);
1769	#endif	2498	#endif
1770	}	2499	}
…		…
1773	wlist_add (&signals [w->signum - 1].head, (WL)w);	2502	wlist_add (&signals [w->signum - 1].head, (WL)w);
1774		2503
1775	if (!((WL)w)->next)	2504	if (!((WL)w)->next)
1776	{	2505	{
1777	#if _WIN32	2506	#if _WIN32
1778	signal (w->signum, sighandler);	2507	signal (w->signum, ev_sighandler);
1779	#else	2508	#else
1780	struct sigaction sa;	2509	struct sigaction sa;
1781	sa.sa_handler = sighandler;	2510	sa.sa_handler = ev_sighandler;
1782	sigfillset (&sa.sa_mask);	2511	sigfillset (&sa.sa_mask);
1783	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2512	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1784	sigaction (w->signum, &sa, 0);	2513	sigaction (w->signum, &sa, 0);
1785	#endif	2514	#endif
1786	}	2515	}
		2516
		2517	EV_FREQUENT_CHECK;
1787	}	2518	}
1788		2519
1789	void noinline	2520	void noinline
1790	ev_signal_stop (EV_P_ ev_signal *w)	2521	ev_signal_stop (EV_P_ ev_signal *w)
1791	{	2522	{
1792	clear_pending (EV_A_ (W)w);	2523	clear_pending (EV_A_ (W)w);
1793	if (expect_false (!ev_is_active (w)))	2524	if (expect_false (!ev_is_active (w)))
1794	return;	2525	return;
1795		2526
		2527	EV_FREQUENT_CHECK;
		2528
1796	wlist_del (&signals [w->signum - 1].head, (WL)w);	2529	wlist_del (&signals [w->signum - 1].head, (WL)w);
1797	ev_stop (EV_A_ (W)w);	2530	ev_stop (EV_A_ (W)w);
1798		2531
1799	if (!signals [w->signum - 1].head)	2532	if (!signals [w->signum - 1].head)
1800	signal (w->signum, SIG_DFL);	2533	signal (w->signum, SIG_DFL);
		2534
		2535	EV_FREQUENT_CHECK;
1801	}	2536	}
1802		2537
1803	void	2538	void
1804	ev_child_start (EV_P_ ev_child *w)	2539	ev_child_start (EV_P_ ev_child *w)
1805	{	2540	{
1806	#if EV_MULTIPLICITY	2541	#if EV_MULTIPLICITY
1807	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2542	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1808	#endif	2543	#endif
1809	if (expect_false (ev_is_active (w)))	2544	if (expect_false (ev_is_active (w)))
1810	return;	2545	return;
1811		2546
		2547	EV_FREQUENT_CHECK;
		2548
1812	ev_start (EV_A_ (W)w, 1);	2549	ev_start (EV_A_ (W)w, 1);
1813	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2550	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2551
		2552	EV_FREQUENT_CHECK;
1814	}	2553	}
1815		2554
1816	void	2555	void
1817	ev_child_stop (EV_P_ ev_child *w)	2556	ev_child_stop (EV_P_ ev_child *w)
1818	{	2557	{
1819	clear_pending (EV_A_ (W)w);	2558	clear_pending (EV_A_ (W)w);
1820	if (expect_false (!ev_is_active (w)))	2559	if (expect_false (!ev_is_active (w)))
1821	return;	2560	return;
1822		2561
		2562	EV_FREQUENT_CHECK;
		2563
1823	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2564	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1824	ev_stop (EV_A_ (W)w);	2565	ev_stop (EV_A_ (W)w);
		2566
		2567	EV_FREQUENT_CHECK;
1825	}	2568	}
1826		2569
1827	#if EV_STAT_ENABLE	2570	#if EV_STAT_ENABLE
1828		2571
1829	# ifdef _WIN32	2572	# ifdef _WIN32
1830	# undef lstat	2573	# undef lstat
1831	# define lstat(a,b) _stati64 (a,b)	2574	# define lstat(a,b) _stati64 (a,b)
1832	# endif	2575	# endif
1833		2576
1834	#define DEF_STAT_INTERVAL 5.0074891	2577	#define DEF_STAT_INTERVAL 5.0074891
		2578	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1835	#define MIN_STAT_INTERVAL 0.1074891	2579	#define MIN_STAT_INTERVAL 0.1074891
1836		2580
1837	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2581	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1838		2582
1839	#if EV_USE_INOTIFY	2583	#if EV_USE_INOTIFY
1840	# define EV_INOTIFY_BUFSIZE 8192	2584	# define EV_INOTIFY_BUFSIZE 8192
…		…
1844	{	2588	{
1845	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);	2589	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);
1846		2590
1847	if (w->wd < 0)	2591	if (w->wd < 0)
1848	{	2592	{
		2593	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1849	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2594	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1850		2595
1851	/* monitor some parent directory for speedup hints */	2596	/* monitor some parent directory for speedup hints */
		2597	/* note that exceeding the hardcoded path limit is not a correctness issue, */
		2598	/* but an efficiency issue only */
1852	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2599	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1853	{	2600	{
1854	char path [4096];	2601	char path [4096];
1855	strcpy (path, w->path);	2602	strcpy (path, w->path);
1856		2603
…		…
1859	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2606	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1860	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2607	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1861		2608
1862	char *pend = strrchr (path, '/');	2609	char *pend = strrchr (path, '/');
1863		2610
1864	if (!pend)	2611	if (!pend || pend == path)
1865	break; /* whoops, no '/', complain to your admin */	2612	break;
1866		2613
1867	*pend = 0;	2614	*pend = 0;
1868	w->wd = inotify_add_watch (fs_fd, path, mask);	2615	w->wd = inotify_add_watch (fs_fd, path, mask);
1869	}	2616	}
1870	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2617	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1871	}	2618	}
1872	}	2619	}
1873	else
1874	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1875		2620
1876	if (w->wd >= 0)	2621	if (w->wd >= 0)
		2622	{
1877	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2623	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2624
		2625	/* now local changes will be tracked by inotify, but remote changes won't */
		2626	/* unless the filesystem it known to be local, we therefore still poll */
		2627	/* also do poll on <2.6.25, but with normal frequency */
		2628	struct statfs sfs;
		2629
		2630	if (fs_2625 && !statfs (w->path, &sfs))
		2631	if (sfs.f_type == 0x1373 /* devfs */
		2632	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2633	|| sfs.f_type == 0x3153464a /* jfs */
		2634	|| sfs.f_type == 0x52654973 /* reiser3 */
		2635	|| sfs.f_type == 0x01021994 /* tempfs */
		2636	|| sfs.f_type == 0x58465342 /* xfs */)
		2637	return;
		2638
		2639	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2640	ev_timer_again (EV_A_ &w->timer);
		2641	}
1878	}	2642	}
1879		2643
1880	static void noinline	2644	static void noinline
1881	infy_del (EV_P_ ev_stat *w)	2645	infy_del (EV_P_ ev_stat *w)
1882	{	2646	{
…		…
1896		2660
1897	static void noinline	2661	static void noinline
1898	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2662	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1899	{	2663	{
1900	if (slot < 0)	2664	if (slot < 0)
1901	/* overflow, need to check for all hahs slots */	2665	/* overflow, need to check for all hash slots */
1902	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2666	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1903	infy_wd (EV_A_ slot, wd, ev);	2667	infy_wd (EV_A_ slot, wd, ev);
1904	else	2668	else
1905	{	2669	{
1906	WL w_;	2670	WL w_;
…		…
1912		2676
1913	if (w->wd == wd || wd == -1)	2677	if (w->wd == wd || wd == -1)
1914	{	2678	{
1915	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2679	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1916	{	2680	{
		2681	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1917	w->wd = -1;	2682	w->wd = -1;
1918	infy_add (EV_A_ w); /* re-add, no matter what */	2683	infy_add (EV_A_ w); /* re-add, no matter what */
1919	}	2684	}
1920		2685
1921	stat_timer_cb (EV_A_ &w->timer, 0);	2686	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
1934		2699
1935	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2700	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1936	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2701	infy_wd (EV_A_ ev->wd, ev->wd, ev);
1937	}	2702	}
1938		2703
1939	void inline_size	2704	inline_size void
		2705	check_2625 (EV_P)
		2706	{
		2707	/* kernels < 2.6.25 are borked
		2708	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2709	*/
		2710	struct utsname buf;
		2711	int major, minor, micro;
		2712
		2713	if (uname (&buf))
		2714	return;
		2715
		2716	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2717	return;
		2718
		2719	if (major < 2
		2720	|| (major == 2 && minor < 6)
		2721	|| (major == 2 && minor == 6 && micro < 25))
		2722	return;
		2723
		2724	fs_2625 = 1;
		2725	}
		2726
		2727	inline_size void
1940	infy_init (EV_P)	2728	infy_init (EV_P)
1941	{	2729	{
1942	if (fs_fd != -2)	2730	if (fs_fd != -2)
1943	return;	2731	return;
		2732
		2733	fs_fd = -1;
		2734
		2735	check_2625 (EV_A);
1944		2736
1945	fs_fd = inotify_init ();	2737	fs_fd = inotify_init ();
1946		2738
1947	if (fs_fd >= 0)	2739	if (fs_fd >= 0)
1948	{	2740	{
…		…
1950	ev_set_priority (&fs_w, EV_MAXPRI);	2742	ev_set_priority (&fs_w, EV_MAXPRI);
1951	ev_io_start (EV_A_ &fs_w);	2743	ev_io_start (EV_A_ &fs_w);
1952	}	2744	}
1953	}	2745	}
1954		2746
1955	void inline_size	2747	inline_size void
1956	infy_fork (EV_P)	2748	infy_fork (EV_P)
1957	{	2749	{
1958	int slot;	2750	int slot;
1959		2751
1960	if (fs_fd < 0)	2752	if (fs_fd < 0)
…		…
1976	w->wd = -1;	2768	w->wd = -1;
1977		2769
1978	if (fs_fd >= 0)	2770	if (fs_fd >= 0)
1979	infy_add (EV_A_ w); /* re-add, no matter what */	2771	infy_add (EV_A_ w); /* re-add, no matter what */
1980	else	2772	else
1981	ev_timer_start (EV_A_ &w->timer);	2773	ev_timer_again (EV_A_ &w->timer);
1982	}	2774	}
1983
1984	}	2775	}
1985	}	2776	}
1986		2777
		2778	#endif
		2779
		2780	#ifdef _WIN32
		2781	# define EV_LSTAT(p,b) _stati64 (p, b)
		2782	#else
		2783	# define EV_LSTAT(p,b) lstat (p, b)
1987	#endif	2784	#endif
1988		2785
1989	void	2786	void
1990	ev_stat_stat (EV_P_ ev_stat *w)	2787	ev_stat_stat (EV_P_ ev_stat *w)
1991	{	2788	{
…		…
2018	|| w->prev.st_atime != w->attr.st_atime	2815	|| w->prev.st_atime != w->attr.st_atime
2019	|| w->prev.st_mtime != w->attr.st_mtime	2816	|| w->prev.st_mtime != w->attr.st_mtime
2020	|| w->prev.st_ctime != w->attr.st_ctime	2817	|| w->prev.st_ctime != w->attr.st_ctime
2021	) {	2818	) {
2022	#if EV_USE_INOTIFY	2819	#if EV_USE_INOTIFY
		2820	if (fs_fd >= 0)
		2821	{
2023	infy_del (EV_A_ w);	2822	infy_del (EV_A_ w);
2024	infy_add (EV_A_ w);	2823	infy_add (EV_A_ w);
2025	ev_stat_stat (EV_A_ w); /* avoid race... */	2824	ev_stat_stat (EV_A_ w); /* avoid race... */
		2825	}
2026	#endif	2826	#endif
2027		2827
2028	ev_feed_event (EV_A_ w, EV_STAT);	2828	ev_feed_event (EV_A_ w, EV_STAT);
2029	}	2829	}
2030	}	2830	}
…		…
2033	ev_stat_start (EV_P_ ev_stat *w)	2833	ev_stat_start (EV_P_ ev_stat *w)
2034	{	2834	{
2035	if (expect_false (ev_is_active (w)))	2835	if (expect_false (ev_is_active (w)))
2036	return;	2836	return;
2037		2837
2038	/* since we use memcmp, we need to clear any padding data etc. */
2039	memset (&w->prev, 0, sizeof (ev_statdata));
2040	memset (&w->attr, 0, sizeof (ev_statdata));
2041
2042	ev_stat_stat (EV_A_ w);	2838	ev_stat_stat (EV_A_ w);
2043		2839
		2840	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2044	if (w->interval < MIN_STAT_INTERVAL)	2841	w->interval = MIN_STAT_INTERVAL;
2045	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2046		2842
2047	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2843	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2048	ev_set_priority (&w->timer, ev_priority (w));	2844	ev_set_priority (&w->timer, ev_priority (w));
2049		2845
2050	#if EV_USE_INOTIFY	2846	#if EV_USE_INOTIFY
2051	infy_init (EV_A);	2847	infy_init (EV_A);
2052		2848
2053	if (fs_fd >= 0)	2849	if (fs_fd >= 0)
2054	infy_add (EV_A_ w);	2850	infy_add (EV_A_ w);
2055	else	2851	else
2056	#endif	2852	#endif
2057	ev_timer_start (EV_A_ &w->timer);	2853	ev_timer_again (EV_A_ &w->timer);
2058		2854
2059	ev_start (EV_A_ (W)w, 1);	2855	ev_start (EV_A_ (W)w, 1);
		2856
		2857	EV_FREQUENT_CHECK;
2060	}	2858	}
2061		2859
2062	void	2860	void
2063	ev_stat_stop (EV_P_ ev_stat *w)	2861	ev_stat_stop (EV_P_ ev_stat *w)
2064	{	2862	{
2065	clear_pending (EV_A_ (W)w);	2863	clear_pending (EV_A_ (W)w);
2066	if (expect_false (!ev_is_active (w)))	2864	if (expect_false (!ev_is_active (w)))
2067	return;	2865	return;
2068		2866
		2867	EV_FREQUENT_CHECK;
		2868
2069	#if EV_USE_INOTIFY	2869	#if EV_USE_INOTIFY
2070	infy_del (EV_A_ w);	2870	infy_del (EV_A_ w);
2071	#endif	2871	#endif
2072	ev_timer_stop (EV_A_ &w->timer);	2872	ev_timer_stop (EV_A_ &w->timer);
2073		2873
2074	ev_stop (EV_A_ (W)w);	2874	ev_stop (EV_A_ (W)w);
		2875
		2876	EV_FREQUENT_CHECK;
2075	}	2877	}
2076	#endif	2878	#endif
2077		2879
2078	#if EV_IDLE_ENABLE	2880	#if EV_IDLE_ENABLE
2079	void	2881	void
…		…
2081	{	2883	{
2082	if (expect_false (ev_is_active (w)))	2884	if (expect_false (ev_is_active (w)))
2083	return;	2885	return;
2084		2886
2085	pri_adjust (EV_A_ (W)w);	2887	pri_adjust (EV_A_ (W)w);
		2888
		2889	EV_FREQUENT_CHECK;
2086		2890
2087	{	2891	{
2088	int active = ++idlecnt [ABSPRI (w)];	2892	int active = ++idlecnt [ABSPRI (w)];
2089		2893
2090	++idleall;	2894	++idleall;
2091	ev_start (EV_A_ (W)w, active);	2895	ev_start (EV_A_ (W)w, active);
2092		2896
2093	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	2897	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2094	idles [ABSPRI (w)][active - 1] = w;	2898	idles [ABSPRI (w)][active - 1] = w;
2095	}	2899	}
		2900
		2901	EV_FREQUENT_CHECK;
2096	}	2902	}
2097		2903
2098	void	2904	void
2099	ev_idle_stop (EV_P_ ev_idle *w)	2905	ev_idle_stop (EV_P_ ev_idle *w)
2100	{	2906	{
2101	clear_pending (EV_A_ (W)w);	2907	clear_pending (EV_A_ (W)w);
2102	if (expect_false (!ev_is_active (w)))	2908	if (expect_false (!ev_is_active (w)))
2103	return;	2909	return;
2104		2910
		2911	EV_FREQUENT_CHECK;
		2912
2105	{	2913	{
2106	int active = ((W)w)->active;	2914	int active = ev_active (w);
2107		2915
2108	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2916	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2109	((W)idles [ABSPRI (w)][active - 1])->active = active;	2917	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2110		2918
2111	ev_stop (EV_A_ (W)w);	2919	ev_stop (EV_A_ (W)w);
2112	--idleall;	2920	--idleall;
2113	}	2921	}
		2922
		2923	EV_FREQUENT_CHECK;
2114	}	2924	}
2115	#endif	2925	#endif
2116		2926
2117	void	2927	void
2118	ev_prepare_start (EV_P_ ev_prepare *w)	2928	ev_prepare_start (EV_P_ ev_prepare *w)
2119	{	2929	{
2120	if (expect_false (ev_is_active (w)))	2930	if (expect_false (ev_is_active (w)))
2121	return;	2931	return;
		2932
		2933	EV_FREQUENT_CHECK;
2122		2934
2123	ev_start (EV_A_ (W)w, ++preparecnt);	2935	ev_start (EV_A_ (W)w, ++preparecnt);
2124	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	2936	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2125	prepares [preparecnt - 1] = w;	2937	prepares [preparecnt - 1] = w;
		2938
		2939	EV_FREQUENT_CHECK;
2126	}	2940	}
2127		2941
2128	void	2942	void
2129	ev_prepare_stop (EV_P_ ev_prepare *w)	2943	ev_prepare_stop (EV_P_ ev_prepare *w)
2130	{	2944	{
2131	clear_pending (EV_A_ (W)w);	2945	clear_pending (EV_A_ (W)w);
2132	if (expect_false (!ev_is_active (w)))	2946	if (expect_false (!ev_is_active (w)))
2133	return;	2947	return;
2134		2948
		2949	EV_FREQUENT_CHECK;
		2950
2135	{	2951	{
2136	int active = ((W)w)->active;	2952	int active = ev_active (w);
		2953
2137	prepares [active - 1] = prepares [--preparecnt];	2954	prepares [active - 1] = prepares [--preparecnt];
2138	((W)prepares [active - 1])->active = active;	2955	ev_active (prepares [active - 1]) = active;
2139	}	2956	}
2140		2957
2141	ev_stop (EV_A_ (W)w);	2958	ev_stop (EV_A_ (W)w);
		2959
		2960	EV_FREQUENT_CHECK;
2142	}	2961	}
2143		2962
2144	void	2963	void
2145	ev_check_start (EV_P_ ev_check *w)	2964	ev_check_start (EV_P_ ev_check *w)
2146	{	2965	{
2147	if (expect_false (ev_is_active (w)))	2966	if (expect_false (ev_is_active (w)))
2148	return;	2967	return;
		2968
		2969	EV_FREQUENT_CHECK;
2149		2970
2150	ev_start (EV_A_ (W)w, ++checkcnt);	2971	ev_start (EV_A_ (W)w, ++checkcnt);
2151	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	2972	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2152	checks [checkcnt - 1] = w;	2973	checks [checkcnt - 1] = w;
		2974
		2975	EV_FREQUENT_CHECK;
2153	}	2976	}
2154		2977
2155	void	2978	void
2156	ev_check_stop (EV_P_ ev_check *w)	2979	ev_check_stop (EV_P_ ev_check *w)
2157	{	2980	{
2158	clear_pending (EV_A_ (W)w);	2981	clear_pending (EV_A_ (W)w);
2159	if (expect_false (!ev_is_active (w)))	2982	if (expect_false (!ev_is_active (w)))
2160	return;	2983	return;
2161		2984
		2985	EV_FREQUENT_CHECK;
		2986
2162	{	2987	{
2163	int active = ((W)w)->active;	2988	int active = ev_active (w);
		2989
2164	checks [active - 1] = checks [--checkcnt];	2990	checks [active - 1] = checks [--checkcnt];
2165	((W)checks [active - 1])->active = active;	2991	ev_active (checks [active - 1]) = active;
2166	}	2992	}
2167		2993
2168	ev_stop (EV_A_ (W)w);	2994	ev_stop (EV_A_ (W)w);
		2995
		2996	EV_FREQUENT_CHECK;
2169	}	2997	}
2170		2998
2171	#if EV_EMBED_ENABLE	2999	#if EV_EMBED_ENABLE
2172	void noinline	3000	void noinline
2173	ev_embed_sweep (EV_P_ ev_embed *w)	3001	ev_embed_sweep (EV_P_ ev_embed *w)
2174	{	3002	{
2175	ev_loop (w->loop, EVLOOP_NONBLOCK);	3003	ev_loop (w->other, EVLOOP_NONBLOCK);
2176	}	3004	}
2177		3005
2178	static void	3006	static void
2179	embed_cb (EV_P_ ev_io *io, int revents)	3007	embed_io_cb (EV_P_ ev_io *io, int revents)
2180	{	3008	{
2181	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	3009	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2182		3010
2183	if (ev_cb (w))	3011	if (ev_cb (w))
2184	ev_feed_event (EV_A_ (W)w, EV_EMBED);	3012	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2185	else	3013	else
2186	ev_embed_sweep (loop, w);	3014	ev_loop (w->other, EVLOOP_NONBLOCK);
2187	}	3015	}
		3016
		3017	static void
		3018	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		3019	{
		3020	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		3021
		3022	{
		3023	struct ev_loop *loop = w->other;
		3024
		3025	while (fdchangecnt)
		3026	{
		3027	fd_reify (EV_A);
		3028	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3029	}
		3030	}
		3031	}
		3032
		3033	static void
		3034	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3035	{
		3036	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3037
		3038	ev_embed_stop (EV_A_ w);
		3039
		3040	{
		3041	struct ev_loop *loop = w->other;
		3042
		3043	ev_loop_fork (EV_A);
		3044	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3045	}
		3046
		3047	ev_embed_start (EV_A_ w);
		3048	}
		3049
		3050	#if 0
		3051	static void
		3052	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		3053	{
		3054	ev_idle_stop (EV_A_ idle);
		3055	}
		3056	#endif
2188		3057
2189	void	3058	void
2190	ev_embed_start (EV_P_ ev_embed *w)	3059	ev_embed_start (EV_P_ ev_embed *w)
2191	{	3060	{
2192	if (expect_false (ev_is_active (w)))	3061	if (expect_false (ev_is_active (w)))
2193	return;	3062	return;
2194		3063
2195	{	3064	{
2196	struct ev_loop *loop = w->loop;	3065	struct ev_loop *loop = w->other;
2197	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3066	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2198	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	3067	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2199	}	3068	}
		3069
		3070	EV_FREQUENT_CHECK;
2200		3071
2201	ev_set_priority (&w->io, ev_priority (w));	3072	ev_set_priority (&w->io, ev_priority (w));
2202	ev_io_start (EV_A_ &w->io);	3073	ev_io_start (EV_A_ &w->io);
2203		3074
		3075	ev_prepare_init (&w->prepare, embed_prepare_cb);
		3076	ev_set_priority (&w->prepare, EV_MINPRI);
		3077	ev_prepare_start (EV_A_ &w->prepare);
		3078
		3079	ev_fork_init (&w->fork, embed_fork_cb);
		3080	ev_fork_start (EV_A_ &w->fork);
		3081
		3082	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		3083
2204	ev_start (EV_A_ (W)w, 1);	3084	ev_start (EV_A_ (W)w, 1);
		3085
		3086	EV_FREQUENT_CHECK;
2205	}	3087	}
2206		3088
2207	void	3089	void
2208	ev_embed_stop (EV_P_ ev_embed *w)	3090	ev_embed_stop (EV_P_ ev_embed *w)
2209	{	3091	{
2210	clear_pending (EV_A_ (W)w);	3092	clear_pending (EV_A_ (W)w);
2211	if (expect_false (!ev_is_active (w)))	3093	if (expect_false (!ev_is_active (w)))
2212	return;	3094	return;
2213		3095
		3096	EV_FREQUENT_CHECK;
		3097
2214	ev_io_stop (EV_A_ &w->io);	3098	ev_io_stop (EV_A_ &w->io);
		3099	ev_prepare_stop (EV_A_ &w->prepare);
		3100	ev_fork_stop (EV_A_ &w->fork);
2215		3101
2216	ev_stop (EV_A_ (W)w);	3102	EV_FREQUENT_CHECK;
2217	}	3103	}
2218	#endif	3104	#endif
2219		3105
2220	#if EV_FORK_ENABLE	3106	#if EV_FORK_ENABLE
2221	void	3107	void
2222	ev_fork_start (EV_P_ ev_fork *w)	3108	ev_fork_start (EV_P_ ev_fork *w)
2223	{	3109	{
2224	if (expect_false (ev_is_active (w)))	3110	if (expect_false (ev_is_active (w)))
2225	return;	3111	return;
		3112
		3113	EV_FREQUENT_CHECK;
2226		3114
2227	ev_start (EV_A_ (W)w, ++forkcnt);	3115	ev_start (EV_A_ (W)w, ++forkcnt);
2228	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3116	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2229	forks [forkcnt - 1] = w;	3117	forks [forkcnt - 1] = w;
		3118
		3119	EV_FREQUENT_CHECK;
2230	}	3120	}
2231		3121
2232	void	3122	void
2233	ev_fork_stop (EV_P_ ev_fork *w)	3123	ev_fork_stop (EV_P_ ev_fork *w)
2234	{	3124	{
2235	clear_pending (EV_A_ (W)w);	3125	clear_pending (EV_A_ (W)w);
2236	if (expect_false (!ev_is_active (w)))	3126	if (expect_false (!ev_is_active (w)))
2237	return;	3127	return;
2238		3128
		3129	EV_FREQUENT_CHECK;
		3130
2239	{	3131	{
2240	int active = ((W)w)->active;	3132	int active = ev_active (w);
		3133
2241	forks [active - 1] = forks [--forkcnt];	3134	forks [active - 1] = forks [--forkcnt];
2242	((W)forks [active - 1])->active = active;	3135	ev_active (forks [active - 1]) = active;
2243	}	3136	}
2244		3137
2245	ev_stop (EV_A_ (W)w);	3138	ev_stop (EV_A_ (W)w);
		3139
		3140	EV_FREQUENT_CHECK;
		3141	}
		3142	#endif
		3143
		3144	#if EV_ASYNC_ENABLE
		3145	void
		3146	ev_async_start (EV_P_ ev_async *w)
		3147	{
		3148	if (expect_false (ev_is_active (w)))
		3149	return;
		3150
		3151	evpipe_init (EV_A);
		3152
		3153	EV_FREQUENT_CHECK;
		3154
		3155	ev_start (EV_A_ (W)w, ++asynccnt);
		3156	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		3157	asyncs [asynccnt - 1] = w;
		3158
		3159	EV_FREQUENT_CHECK;
		3160	}
		3161
		3162	void
		3163	ev_async_stop (EV_P_ ev_async *w)
		3164	{
		3165	clear_pending (EV_A_ (W)w);
		3166	if (expect_false (!ev_is_active (w)))
		3167	return;
		3168
		3169	EV_FREQUENT_CHECK;
		3170
		3171	{
		3172	int active = ev_active (w);
		3173
		3174	asyncs [active - 1] = asyncs [--asynccnt];
		3175	ev_active (asyncs [active - 1]) = active;
		3176	}
		3177
		3178	ev_stop (EV_A_ (W)w);
		3179
		3180	EV_FREQUENT_CHECK;
		3181	}
		3182
		3183	void
		3184	ev_async_send (EV_P_ ev_async *w)
		3185	{
		3186	w->sent = 1;
		3187	evpipe_write (EV_A_ &gotasync);
2246	}	3188	}
2247	#endif	3189	#endif
2248		3190
2249	/*****************************************************************************/	3191	/*****************************************************************************/
2250		3192
…		…
2260	once_cb (EV_P_ struct ev_once *once, int revents)	3202	once_cb (EV_P_ struct ev_once *once, int revents)
2261	{	3203	{
2262	void (*cb)(int revents, void *arg) = once->cb;	3204	void (*cb)(int revents, void *arg) = once->cb;
2263	void *arg = once->arg;	3205	void *arg = once->arg;
2264		3206
2265	ev_io_stop (EV_A_ &once->io);	3207	ev_io_stop (EV_A_ &once->io);
2266	ev_timer_stop (EV_A_ &once->to);	3208	ev_timer_stop (EV_A_ &once->to);
2267	ev_free (once);	3209	ev_free (once);
2268		3210
2269	cb (revents, arg);	3211	cb (revents, arg);
2270	}	3212	}
2271		3213
2272	static void	3214	static void
2273	once_cb_io (EV_P_ ev_io *w, int revents)	3215	once_cb_io (EV_P_ ev_io *w, int revents)
2274	{	3216	{
2275	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3217	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3218
		3219	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2276	}	3220	}
2277		3221
2278	static void	3222	static void
2279	once_cb_to (EV_P_ ev_timer *w, int revents)	3223	once_cb_to (EV_P_ ev_timer *w, int revents)
2280	{	3224	{
2281	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3225	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3226
		3227	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2282	}	3228	}
2283		3229
2284	void	3230	void
2285	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3231	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2286	{	3232	{
…		…
2308	ev_timer_set (&once->to, timeout, 0.);	3254	ev_timer_set (&once->to, timeout, 0.);
2309	ev_timer_start (EV_A_ &once->to);	3255	ev_timer_start (EV_A_ &once->to);
2310	}	3256	}
2311	}	3257	}
2312		3258
		3259	/*****************************************************************************/
		3260
		3261	#if EV_WALK_ENABLE
		3262	void
		3263	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3264	{
		3265	int i, j;
		3266	ev_watcher_list *wl, *wn;
		3267
		3268	if (types & (EV_IO | EV_EMBED))
		3269	for (i = 0; i < anfdmax; ++i)
		3270	for (wl = anfds [i].head; wl; )
		3271	{
		3272	wn = wl->next;
		3273
		3274	#if EV_EMBED_ENABLE
		3275	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3276	{
		3277	if (types & EV_EMBED)
		3278	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3279	}
		3280	else
		3281	#endif
		3282	#if EV_USE_INOTIFY
		3283	if (ev_cb ((ev_io *)wl) == infy_cb)
		3284	;
		3285	else
		3286	#endif
		3287	if ((ev_io *)wl != &pipe_w)
		3288	if (types & EV_IO)
		3289	cb (EV_A_ EV_IO, wl);
		3290
		3291	wl = wn;
		3292	}
		3293
		3294	if (types & (EV_TIMER | EV_STAT))
		3295	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3296	#if EV_STAT_ENABLE
		3297	/*TODO: timer is not always active*/
		3298	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3299	{
		3300	if (types & EV_STAT)
		3301	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3302	}
		3303	else
		3304	#endif
		3305	if (types & EV_TIMER)
		3306	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3307
		3308	#if EV_PERIODIC_ENABLE
		3309	if (types & EV_PERIODIC)
		3310	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3311	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3312	#endif
		3313
		3314	#if EV_IDLE_ENABLE
		3315	if (types & EV_IDLE)
		3316	for (j = NUMPRI; i--; )
		3317	for (i = idlecnt [j]; i--; )
		3318	cb (EV_A_ EV_IDLE, idles [j][i]);
		3319	#endif
		3320
		3321	#if EV_FORK_ENABLE
		3322	if (types & EV_FORK)
		3323	for (i = forkcnt; i--; )
		3324	if (ev_cb (forks [i]) != embed_fork_cb)
		3325	cb (EV_A_ EV_FORK, forks [i]);
		3326	#endif
		3327
		3328	#if EV_ASYNC_ENABLE
		3329	if (types & EV_ASYNC)
		3330	for (i = asynccnt; i--; )
		3331	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3332	#endif
		3333
		3334	if (types & EV_PREPARE)
		3335	for (i = preparecnt; i--; )
		3336	#if EV_EMBED_ENABLE
		3337	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3338	#endif
		3339	cb (EV_A_ EV_PREPARE, prepares [i]);
		3340
		3341	if (types & EV_CHECK)
		3342	for (i = checkcnt; i--; )
		3343	cb (EV_A_ EV_CHECK, checks [i]);
		3344
		3345	if (types & EV_SIGNAL)
		3346	for (i = 0; i < signalmax; ++i)
		3347	for (wl = signals [i].head; wl; )
		3348	{
		3349	wn = wl->next;
		3350	cb (EV_A_ EV_SIGNAL, wl);
		3351	wl = wn;
		3352	}
		3353
		3354	if (types & EV_CHILD)
		3355	for (i = EV_PID_HASHSIZE; i--; )
		3356	for (wl = childs [i]; wl; )
		3357	{
		3358	wn = wl->next;
		3359	cb (EV_A_ EV_CHILD, wl);
		3360	wl = wn;
		3361	}
		3362	/* EV_STAT 0x00001000 /* stat data changed */
		3363	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3364	}
		3365	#endif
		3366
		3367	#if EV_MULTIPLICITY
		3368	#include "ev_wrap.h"
		3369	#endif
		3370
2313	#ifdef __cplusplus	3371	#ifdef __cplusplus
2314	}	3372	}
2315	#endif	3373	#endif
2316		3374

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