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Comparing libev/ev.c (file contents):
Revision 1.178 by root, Tue Dec 11 18:36:11 2007 UTC vs.
Revision 1.291 by root, Mon Jun 29 04:44:18 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
…		…
374		568
375	ev_tstamp	569	ev_tstamp
376	ev_time (void)	570	ev_time (void)
377	{	571	{
378	#if EV_USE_REALTIME	572	#if EV_USE_REALTIME
		573	if (expect_true (have_realtime))
		574	{
379	struct timespec ts;	575	struct timespec ts;
380	clock_gettime (CLOCK_REALTIME, &ts);	576	clock_gettime (CLOCK_REALTIME, &ts);
381	return ts.tv_sec + ts.tv_nsec * 1e-9;	577	return ts.tv_sec + ts.tv_nsec * 1e-9;
382	#else	578	}
		579	#endif
		580
383	struct timeval tv;	581	struct timeval tv;
384	gettimeofday (&tv, 0);	582	gettimeofday (&tv, 0);
385	return tv.tv_sec + tv.tv_usec * 1e-6;	583	return tv.tv_sec + tv.tv_usec * 1e-6;
386	#endif
387	}	584	}
388		585
389	ev_tstamp inline_size	586	inline_size ev_tstamp
390	get_clock (void)	587	get_clock (void)
391	{	588	{
392	#if EV_USE_MONOTONIC	589	#if EV_USE_MONOTONIC
393	if (expect_true (have_monotonic))	590	if (expect_true (have_monotonic))
394	{	591	{
…		…
407	{	604	{
408	return ev_rt_now;	605	return ev_rt_now;
409	}	606	}
410	#endif	607	#endif
411		608
412	int inline_size	609	void
		610	ev_sleep (ev_tstamp delay)
		611	{
		612	if (delay > 0.)
		613	{
		614	#if EV_USE_NANOSLEEP
		615	struct timespec ts;
		616
		617	ts.tv_sec = (time_t)delay;
		618	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		619
		620	nanosleep (&ts, 0);
		621	#elif defined(_WIN32)
		622	Sleep ((unsigned long)(delay * 1e3));
		623	#else
		624	struct timeval tv;
		625
		626	tv.tv_sec = (time_t)delay;
		627	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		628
		629	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		630	/* somehting nto guaranteed by newer posix versions, but guaranteed */
		631	/* by older ones */
		632	select (0, 0, 0, 0, &tv);
		633	#endif
		634	}
		635	}
		636
		637	/*****************************************************************************/
		638
		639	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		640
		641	/* find a suitable new size for the given array, */
		642	/* hopefully by rounding to a ncie-to-malloc size */
		643	inline_size int
413	array_nextsize (int elem, int cur, int cnt)	644	array_nextsize (int elem, int cur, int cnt)
414	{	645	{
415	int ncur = cur + 1;	646	int ncur = cur + 1;
416		647
417	do	648	do
418	ncur <<= 1;	649	ncur <<= 1;
419	while (cnt > ncur);	650	while (cnt > ncur);
420		651
421	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	652	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
422	if (elem * ncur > 4096)	653	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
423	{	654	{
424	ncur *= elem;	655	ncur *= elem;
425	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	656	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
426	ncur = ncur - sizeof (void *) * 4;	657	ncur = ncur - sizeof (void *) * 4;
427	ncur /= elem;	658	ncur /= elem;
428	}	659	}
429		660
430	return ncur;	661	return ncur;
…		…
434	array_realloc (int elem, void *base, int *cur, int cnt)	665	array_realloc (int elem, void *base, int *cur, int cnt)
435	{	666	{
436	*cur = array_nextsize (elem, *cur, cnt);	667	*cur = array_nextsize (elem, *cur, cnt);
437	return ev_realloc (base, elem * *cur);	668	return ev_realloc (base, elem * *cur);
438	}	669	}
		670
		671	#define array_init_zero(base,count) \
		672	memset ((void *)(base), 0, sizeof (*(base)) * (count))
439		673
440	#define array_needsize(type,base,cur,cnt,init) \	674	#define array_needsize(type,base,cur,cnt,init) \
441	if (expect_false ((cnt) > (cur))) \	675	if (expect_false ((cnt) > (cur))) \
442	{ \	676	{ \
443	int ocur_ = (cur); \	677	int ocur_ = (cur); \
…		…
455	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	689	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
456	}	690	}
457	#endif	691	#endif
458		692
459	#define array_free(stem, idx) \	693	#define array_free(stem, idx) \
460	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	694	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
461		695
462	/*****************************************************************************/	696	/*****************************************************************************/
		697
		698	/* dummy callback for pending events */
		699	static void noinline
		700	pendingcb (EV_P_ ev_prepare *w, int revents)
		701	{
		702	}
463		703
464	void noinline	704	void noinline
465	ev_feed_event (EV_P_ void *w, int revents)	705	ev_feed_event (EV_P_ void *w, int revents)
466	{	706	{
467	W w_ = (W)w;	707	W w_ = (W)w;
…		…
476	pendings [pri][w_->pending - 1].w = w_;	716	pendings [pri][w_->pending - 1].w = w_;
477	pendings [pri][w_->pending - 1].events = revents;	717	pendings [pri][w_->pending - 1].events = revents;
478	}	718	}
479	}	719	}
480		720
481	void inline_size	721	inline_speed void
		722	feed_reverse (EV_P_ W w)
		723	{
		724	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		725	rfeeds [rfeedcnt++] = w;
		726	}
		727
		728	inline_size void
		729	feed_reverse_done (EV_P_ int revents)
		730	{
		731	do
		732	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		733	while (rfeedcnt);
		734	}
		735
		736	inline_speed void
482	queue_events (EV_P_ W *events, int eventcnt, int type)	737	queue_events (EV_P_ W *events, int eventcnt, int type)
483	{	738	{
484	int i;	739	int i;
485		740
486	for (i = 0; i < eventcnt; ++i)	741	for (i = 0; i < eventcnt; ++i)
487	ev_feed_event (EV_A_ events [i], type);	742	ev_feed_event (EV_A_ events [i], type);
488	}	743	}
489		744
490	/*****************************************************************************/	745	/*****************************************************************************/
491		746
492	void inline_size	747	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)	748	fd_event (EV_P_ int fd, int revents)
507	{	749	{
508	ANFD *anfd = anfds + fd;	750	ANFD *anfd = anfds + fd;
509	ev_io *w;	751	ev_io *w;
510		752
…		…
522	{	764	{
523	if (fd >= 0 && fd < anfdmax)	765	if (fd >= 0 && fd < anfdmax)
524	fd_event (EV_A_ fd, revents);	766	fd_event (EV_A_ fd, revents);
525	}	767	}
526		768
527	void inline_size	769	/* make sure the external fd watch events are in-sync */
		770	/* with the kernel/libev internal state */
		771	inline_size void
528	fd_reify (EV_P)	772	fd_reify (EV_P)
529	{	773	{
530	int i;	774	int i;
531		775
532	for (i = 0; i < fdchangecnt; ++i)	776	for (i = 0; i < fdchangecnt; ++i)
533	{	777	{
534	int fd = fdchanges [i];	778	int fd = fdchanges [i];
535	ANFD *anfd = anfds + fd;	779	ANFD *anfd = anfds + fd;
536	ev_io *w;	780	ev_io *w;
537		781
538	int events = 0;	782	unsigned char events = 0;
539		783
540	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	784	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
541	events |= w->events;	785	events |= (unsigned char)w->events;
542		786
543	#if EV_SELECT_IS_WINSOCKET	787	#if EV_SELECT_IS_WINSOCKET
544	if (events)	788	if (events)
545	{	789	{
546	unsigned long argp;	790	unsigned long arg;
		791	#ifdef EV_FD_TO_WIN32_HANDLE
		792	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		793	#else
547	anfd->handle = _get_osfhandle (fd);	794	anfd->handle = _get_osfhandle (fd);
		795	#endif
548	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	796	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
549	}	797	}
550	#endif	798	#endif
551		799
		800	{
		801	unsigned char o_events = anfd->events;
		802	unsigned char o_reify = anfd->reify;
		803
552	anfd->reify = 0;	804	anfd->reify = 0;
553
554	backend_modify (EV_A_ fd, anfd->events, events);
555	anfd->events = events;	805	anfd->events = events;
		806
		807	if (o_events != events || o_reify & EV__IOFDSET)
		808	backend_modify (EV_A_ fd, o_events, events);
		809	}
556	}	810	}
557		811
558	fdchangecnt = 0;	812	fdchangecnt = 0;
559	}	813	}
560		814
561	void inline_size	815	/* something about the given fd changed */
		816	inline_size void
562	fd_change (EV_P_ int fd)	817	fd_change (EV_P_ int fd, int flags)
563	{	818	{
564	if (expect_false (anfds [fd].reify))	819	unsigned char reify = anfds [fd].reify;
565	return;
566
567	anfds [fd].reify = 1;	820	anfds [fd].reify |= flags;
568		821
		822	if (expect_true (!reify))
		823	{
569	++fdchangecnt;	824	++fdchangecnt;
570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	825	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
571	fdchanges [fdchangecnt - 1] = fd;	826	fdchanges [fdchangecnt - 1] = fd;
		827	}
572	}	828	}
573		829
574	void inline_speed	830	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		831	inline_speed void
575	fd_kill (EV_P_ int fd)	832	fd_kill (EV_P_ int fd)
576	{	833	{
577	ev_io *w;	834	ev_io *w;
578		835
579	while ((w = (ev_io *)anfds [fd].head))	836	while ((w = (ev_io *)anfds [fd].head))
…		…
581	ev_io_stop (EV_A_ w);	838	ev_io_stop (EV_A_ w);
582	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	839	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
583	}	840	}
584	}	841	}
585		842
586	int inline_size	843	/* check whether the given fd is atcually valid, for error recovery */
		844	inline_size int
587	fd_valid (int fd)	845	fd_valid (int fd)
588	{	846	{
589	#ifdef _WIN32	847	#ifdef _WIN32
590	return _get_osfhandle (fd) != -1;	848	return _get_osfhandle (fd) != -1;
591	#else	849	#else
…		…
599	{	857	{
600	int fd;	858	int fd;
601		859
602	for (fd = 0; fd < anfdmax; ++fd)	860	for (fd = 0; fd < anfdmax; ++fd)
603	if (anfds [fd].events)	861	if (anfds [fd].events)
604	if (!fd_valid (fd) == -1 && errno == EBADF)	862	if (!fd_valid (fd) && errno == EBADF)
605	fd_kill (EV_A_ fd);	863	fd_kill (EV_A_ fd);
606	}	864	}
607		865
608	/* called on ENOMEM in select/poll to kill some fds and retry */	866	/* called on ENOMEM in select/poll to kill some fds and retry */
609	static void noinline	867	static void noinline
…		…
627		885
628	for (fd = 0; fd < anfdmax; ++fd)	886	for (fd = 0; fd < anfdmax; ++fd)
629	if (anfds [fd].events)	887	if (anfds [fd].events)
630	{	888	{
631	anfds [fd].events = 0;	889	anfds [fd].events = 0;
		890	anfds [fd].emask = 0;
632	fd_change (EV_A_ fd);	891	fd_change (EV_A_ fd, EV__IOFDSET | 1);
633	}	892	}
634	}	893	}
635		894
636	/*****************************************************************************/	895	/*****************************************************************************/
637		896
638	void inline_speed	897	/*
639	upheap (WT *heap, int k)	898	* the heap functions want a real array index. array index 0 uis guaranteed to not
640	{	899	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
641	WT w = heap [k];	900	* the branching factor of the d-tree.
		901	*/
642		902
643	while (k && heap [k >> 1]->at > w->at)	903	/*
644	{	904	* at the moment we allow libev the luxury of two heaps,
645	heap [k] = heap [k >> 1];	905	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
646	((W)heap [k])->active = k + 1;	906	* which is more cache-efficient.
647	k >>= 1;	907	* the difference is about 5% with 50000+ watchers.
648	}	908	*/
		909	#if EV_USE_4HEAP
649		910
650	heap [k] = w;	911	#define DHEAP 4
651	((W)heap [k])->active = k + 1;	912	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		913	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		914	#define UPHEAP_DONE(p,k) ((p) == (k))
652		915
653	}	916	/* away from the root */
654		917	inline_speed void
655	void inline_speed
656	downheap (WT *heap, int N, int k)	918	downheap (ANHE *heap, int N, int k)
657	{	919	{
658	WT w = heap [k];	920	ANHE he = heap [k];
		921	ANHE *E = heap + N + HEAP0;
659		922
660	while (k < (N >> 1))	923	for (;;)
661	{	924	{
662	int j = k << 1;	925	ev_tstamp minat;
		926	ANHE *minpos;
		927	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
663		928
664	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	929	/* find minimum child */
		930	if (expect_true (pos + DHEAP - 1 < E))
665	++j;	931	{
666		932	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
667	if (w->at <= heap [j]->at)	933	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		934	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		935	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		936	}
		937	else if (pos < E)
		938	{
		939	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		940	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		941	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		942	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		943	}
		944	else
668	break;	945	break;
669		946
		947	if (ANHE_at (he) <= minat)
		948	break;
		949
		950	heap [k] = *minpos;
		951	ev_active (ANHE_w (*minpos)) = k;
		952
		953	k = minpos - heap;
		954	}
		955
		956	heap [k] = he;
		957	ev_active (ANHE_w (he)) = k;
		958	}
		959
		960	#else /* 4HEAP */
		961
		962	#define HEAP0 1
		963	#define HPARENT(k) ((k) >> 1)
		964	#define UPHEAP_DONE(p,k) (!(p))
		965
		966	/* away from the root */
		967	inline_speed void
		968	downheap (ANHE *heap, int N, int k)
		969	{
		970	ANHE he = heap [k];
		971
		972	for (;;)
		973	{
		974	int c = k << 1;
		975
		976	if (c > N + HEAP0 - 1)
		977	break;
		978
		979	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		980	? 1 : 0;
		981
		982	if (ANHE_at (he) <= ANHE_at (heap [c]))
		983	break;
		984
670	heap [k] = heap [j];	985	heap [k] = heap [c];
671	((W)heap [k])->active = k + 1;	986	ev_active (ANHE_w (heap [k])) = k;
		987
672	k = j;	988	k = c;
673	}	989	}
674		990
675	heap [k] = w;	991	heap [k] = he;
676	((W)heap [k])->active = k + 1;	992	ev_active (ANHE_w (he)) = k;
677	}	993	}
		994	#endif
678		995
679	void inline_size	996	/* towards the root */
		997	inline_speed void
		998	upheap (ANHE *heap, int k)
		999	{
		1000	ANHE he = heap [k];
		1001
		1002	for (;;)
		1003	{
		1004	int p = HPARENT (k);
		1005
		1006	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1007	break;
		1008
		1009	heap [k] = heap [p];
		1010	ev_active (ANHE_w (heap [k])) = k;
		1011	k = p;
		1012	}
		1013
		1014	heap [k] = he;
		1015	ev_active (ANHE_w (he)) = k;
		1016	}
		1017
		1018	/* move an element suitably so it is in a correct place */
		1019	inline_size void
680	adjustheap (WT *heap, int N, int k)	1020	adjustheap (ANHE *heap, int N, int k)
681	{	1021	{
		1022	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
682	upheap (heap, k);	1023	upheap (heap, k);
		1024	else
683	downheap (heap, N, k);	1025	downheap (heap, N, k);
		1026	}
		1027
		1028	/* rebuild the heap: this function is used only once and executed rarely */
		1029	inline_size void
		1030	reheap (ANHE *heap, int N)
		1031	{
		1032	int i;
		1033
		1034	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1035	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1036	for (i = 0; i < N; ++i)
		1037	upheap (heap, i + HEAP0);
684	}	1038	}
685		1039
686	/*****************************************************************************/	1040	/*****************************************************************************/
687		1041
		1042	/* associate signal watchers to a signal signal */
688	typedef struct	1043	typedef struct
689	{	1044	{
690	WL head;	1045	WL head;
691	sig_atomic_t volatile gotsig;	1046	EV_ATOMIC_T gotsig;
692	} ANSIG;	1047	} ANSIG;
693		1048
694	static ANSIG *signals;	1049	static ANSIG *signals;
695	static int signalmax;	1050	static int signalmax;
696		1051
697	static int sigpipe [2];	1052	static EV_ATOMIC_T gotsig;
698	static sig_atomic_t volatile gotsig;
699	static ev_io sigev;
700		1053
701	void inline_size	1054	/*****************************************************************************/
702	signals_init (ANSIG *base, int count)
703	{
704	while (count--)
705	{
706	base->head = 0;
707	base->gotsig = 0;
708		1055
709	++base;	1056	/* used to prepare libev internal fd's */
710	}	1057	/* this is not fork-safe */
711	}	1058	inline_speed void
712
713	static void
714	sighandler (int signum)
715	{
716	#if _WIN32
717	signal (signum, sighandler);
718	#endif
719
720	signals [signum - 1].gotsig = 1;
721
722	if (!gotsig)
723	{
724	int old_errno = errno;
725	gotsig = 1;
726	write (sigpipe [1], &signum, 1);
727	errno = old_errno;
728	}
729	}
730
731	void noinline
732	ev_feed_signal_event (EV_P_ int signum)
733	{
734	WL w;
735
736	#if EV_MULTIPLICITY
737	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
738	#endif
739
740	--signum;
741
742	if (signum < 0 || signum >= signalmax)
743	return;
744
745	signals [signum].gotsig = 0;
746
747	for (w = signals [signum].head; w; w = w->next)
748	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
749	}
750
751	static void
752	sigcb (EV_P_ ev_io *iow, int revents)
753	{
754	int signum;
755
756	read (sigpipe [0], &revents, 1);
757	gotsig = 0;
758
759	for (signum = signalmax; signum--; )
760	if (signals [signum].gotsig)
761	ev_feed_signal_event (EV_A_ signum + 1);
762	}
763
764	void inline_speed
765	fd_intern (int fd)	1059	fd_intern (int fd)
766	{	1060	{
767	#ifdef _WIN32	1061	#ifdef _WIN32
768	int arg = 1;	1062	unsigned long arg = 1;
769	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1063	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
770	#else	1064	#else
771	fcntl (fd, F_SETFD, FD_CLOEXEC);	1065	fcntl (fd, F_SETFD, FD_CLOEXEC);
772	fcntl (fd, F_SETFL, O_NONBLOCK);	1066	fcntl (fd, F_SETFL, O_NONBLOCK);
773	#endif	1067	#endif
774	}	1068	}
775		1069
776	static void noinline	1070	static void noinline
777	siginit (EV_P)	1071	evpipe_init (EV_P)
778	{	1072	{
		1073	if (!ev_is_active (&pipe_w))
		1074	{
		1075	#if EV_USE_EVENTFD
		1076	if ((evfd = eventfd (0, 0)) >= 0)
		1077	{
		1078	evpipe [0] = -1;
		1079	fd_intern (evfd);
		1080	ev_io_set (&pipe_w, evfd, EV_READ);
		1081	}
		1082	else
		1083	#endif
		1084	{
		1085	while (pipe (evpipe))
		1086	ev_syserr ("(libev) error creating signal/async pipe");
		1087
779	fd_intern (sigpipe [0]);	1088	fd_intern (evpipe [0]);
780	fd_intern (sigpipe [1]);	1089	fd_intern (evpipe [1]);
		1090	ev_io_set (&pipe_w, evpipe [0], EV_READ);
		1091	}
781		1092
782	ev_io_set (&sigev, sigpipe [0], EV_READ);
783	ev_io_start (EV_A_ &sigev);	1093	ev_io_start (EV_A_ &pipe_w);
784	ev_unref (EV_A); /* child watcher should not keep loop alive */	1094	ev_unref (EV_A); /* watcher should not keep loop alive */
		1095	}
		1096	}
		1097
		1098	inline_size void
		1099	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		1100	{
		1101	if (!*flag)
		1102	{
		1103	int old_errno = errno; /* save errno because write might clobber it */
		1104
		1105	*flag = 1;
		1106
		1107	#if EV_USE_EVENTFD
		1108	if (evfd >= 0)
		1109	{
		1110	uint64_t counter = 1;
		1111	write (evfd, &counter, sizeof (uint64_t));
		1112	}
		1113	else
		1114	#endif
		1115	write (evpipe [1], &old_errno, 1);
		1116
		1117	errno = old_errno;
		1118	}
		1119	}
		1120
		1121	/* called whenever the libev signal pipe */
		1122	/* got some events (signal, async) */
		1123	static void
		1124	pipecb (EV_P_ ev_io *iow, int revents)
		1125	{
		1126	#if EV_USE_EVENTFD
		1127	if (evfd >= 0)
		1128	{
		1129	uint64_t counter;
		1130	read (evfd, &counter, sizeof (uint64_t));
		1131	}
		1132	else
		1133	#endif
		1134	{
		1135	char dummy;
		1136	read (evpipe [0], &dummy, 1);
		1137	}
		1138
		1139	if (gotsig && ev_is_default_loop (EV_A))
		1140	{
		1141	int signum;
		1142	gotsig = 0;
		1143
		1144	for (signum = signalmax; signum--; )
		1145	if (signals [signum].gotsig)
		1146	ev_feed_signal_event (EV_A_ signum + 1);
		1147	}
		1148
		1149	#if EV_ASYNC_ENABLE
		1150	if (gotasync)
		1151	{
		1152	int i;
		1153	gotasync = 0;
		1154
		1155	for (i = asynccnt; i--; )
		1156	if (asyncs [i]->sent)
		1157	{
		1158	asyncs [i]->sent = 0;
		1159	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		1160	}
		1161	}
		1162	#endif
785	}	1163	}
786		1164
787	/*****************************************************************************/	1165	/*****************************************************************************/
788		1166
		1167	static void
		1168	ev_sighandler (int signum)
		1169	{
		1170	#if EV_MULTIPLICITY
		1171	struct ev_loop *loop = &default_loop_struct;
		1172	#endif
		1173
		1174	#if _WIN32
		1175	signal (signum, ev_sighandler);
		1176	#endif
		1177
		1178	signals [signum - 1].gotsig = 1;
		1179	evpipe_write (EV_A_ &gotsig);
		1180	}
		1181
		1182	void noinline
		1183	ev_feed_signal_event (EV_P_ int signum)
		1184	{
		1185	WL w;
		1186
		1187	#if EV_MULTIPLICITY
		1188	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		1189	#endif
		1190
		1191	--signum;
		1192
		1193	if (signum < 0 || signum >= signalmax)
		1194	return;
		1195
		1196	signals [signum].gotsig = 0;
		1197
		1198	for (w = signals [signum].head; w; w = w->next)
		1199	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		1200	}
		1201
		1202	/*****************************************************************************/
		1203
789	static ev_child *childs [EV_PID_HASHSIZE];	1204	static WL childs [EV_PID_HASHSIZE];
790		1205
791	#ifndef _WIN32	1206	#ifndef _WIN32
792		1207
793	static ev_signal childev;	1208	static ev_signal childev;
794		1209
795	void inline_speed	1210	#ifndef WIFCONTINUED
		1211	# define WIFCONTINUED(status) 0
		1212	#endif
		1213
		1214	/* handle a single child status event */
		1215	inline_speed void
796	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	1216	child_reap (EV_P_ int chain, int pid, int status)
797	{	1217	{
798	ev_child *w;	1218	ev_child *w;
		1219	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
799		1220
800	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1221	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1222	{
801	if (w->pid == pid || !w->pid)	1223	if ((w->pid == pid || !w->pid)
		1224	&& (!traced || (w->flags & 1)))
802	{	1225	{
803	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */	1226	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
804	w->rpid = pid;	1227	w->rpid = pid;
805	w->rstatus = status;	1228	w->rstatus = status;
806	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1229	ev_feed_event (EV_A_ (W)w, EV_CHILD);
807	}	1230	}
		1231	}
808	}	1232	}
809		1233
810	#ifndef WCONTINUED	1234	#ifndef WCONTINUED
811	# define WCONTINUED 0	1235	# define WCONTINUED 0
812	#endif	1236	#endif
813		1237
		1238	/* called on sigchld etc., calls waitpid */
814	static void	1239	static void
815	childcb (EV_P_ ev_signal *sw, int revents)	1240	childcb (EV_P_ ev_signal *sw, int revents)
816	{	1241	{
817	int pid, status;	1242	int pid, status;
818		1243
…		…
821	if (!WCONTINUED	1246	if (!WCONTINUED
822	|| errno != EINVAL	1247	|| errno != EINVAL
823	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))	1248	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
824	return;	1249	return;
825		1250
826	/* make sure we are called again until all childs have been reaped */	1251	/* make sure we are called again until all children have been reaped */
827	/* we need to do it this way so that the callback gets called before we continue */	1252	/* we need to do it this way so that the callback gets called before we continue */
828	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1253	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
829		1254
830	child_reap (EV_A_ sw, pid, pid, status);	1255	child_reap (EV_A_ pid, pid, status);
831	if (EV_PID_HASHSIZE > 1)	1256	if (EV_PID_HASHSIZE > 1)
832	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1257	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
833	}	1258	}
834		1259
835	#endif	1260	#endif
836		1261
837	/*****************************************************************************/	1262	/*****************************************************************************/
…		…
899	/* kqueue is borked on everything but netbsd apparently */	1324	/* kqueue is borked on everything but netbsd apparently */
900	/* it usually doesn't work correctly on anything but sockets and pipes */	1325	/* it usually doesn't work correctly on anything but sockets and pipes */
901	flags &= ~EVBACKEND_KQUEUE;	1326	flags &= ~EVBACKEND_KQUEUE;
902	#endif	1327	#endif
903	#ifdef __APPLE__	1328	#ifdef __APPLE__
904	// flags &= ~EVBACKEND_KQUEUE; for documentation	1329	/* only select works correctly on that "unix-certified" platform */
905	flags &= ~EVBACKEND_POLL;	1330	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1331	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
906	#endif	1332	#endif
907		1333
908	return flags;	1334	return flags;
909	}	1335	}
910		1336
911	unsigned int	1337	unsigned int
912	ev_embeddable_backends (void)	1338	ev_embeddable_backends (void)
913	{	1339	{
914	return EVBACKEND_EPOLL	1340	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
915	| EVBACKEND_KQUEUE	1341
916	| EVBACKEND_PORT;	1342	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1343	/* please fix it and tell me how to detect the fix */
		1344	flags &= ~EVBACKEND_EPOLL;
		1345
		1346	return flags;
917	}	1347	}
918		1348
919	unsigned int	1349	unsigned int
920	ev_backend (EV_P)	1350	ev_backend (EV_P)
921	{	1351	{
…		…
926	ev_loop_count (EV_P)	1356	ev_loop_count (EV_P)
927	{	1357	{
928	return loop_count;	1358	return loop_count;
929	}	1359	}
930		1360
		1361	void
		1362	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1363	{
		1364	io_blocktime = interval;
		1365	}
		1366
		1367	void
		1368	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1369	{
		1370	timeout_blocktime = interval;
		1371	}
		1372
		1373	/* initialise a loop structure, must be zero-initialised */
931	static void noinline	1374	static void noinline
932	loop_init (EV_P_ unsigned int flags)	1375	loop_init (EV_P_ unsigned int flags)
933	{	1376	{
934	if (!backend)	1377	if (!backend)
935	{	1378	{
		1379	#if EV_USE_REALTIME
		1380	if (!have_realtime)
		1381	{
		1382	struct timespec ts;
		1383
		1384	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1385	have_realtime = 1;
		1386	}
		1387	#endif
		1388
936	#if EV_USE_MONOTONIC	1389	#if EV_USE_MONOTONIC
		1390	if (!have_monotonic)
937	{	1391	{
938	struct timespec ts;	1392	struct timespec ts;
		1393
939	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1394	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
940	have_monotonic = 1;	1395	have_monotonic = 1;
941	}	1396	}
942	#endif	1397	#endif
943		1398
944	ev_rt_now = ev_time ();	1399	ev_rt_now = ev_time ();
945	mn_now = get_clock ();	1400	mn_now = get_clock ();
946	now_floor = mn_now;	1401	now_floor = mn_now;
947	rtmn_diff = ev_rt_now - mn_now;	1402	rtmn_diff = ev_rt_now - mn_now;
		1403
		1404	io_blocktime = 0.;
		1405	timeout_blocktime = 0.;
		1406	backend = 0;
		1407	backend_fd = -1;
		1408	gotasync = 0;
		1409	#if EV_USE_INOTIFY
		1410	fs_fd = -2;
		1411	#endif
948		1412
949	/* pid check not overridable via env */	1413	/* pid check not overridable via env */
950	#ifndef _WIN32	1414	#ifndef _WIN32
951	if (flags & EVFLAG_FORKCHECK)	1415	if (flags & EVFLAG_FORKCHECK)
952	curpid = getpid ();	1416	curpid = getpid ();
…		…
955	if (!(flags & EVFLAG_NOENV)	1419	if (!(flags & EVFLAG_NOENV)
956	&& !enable_secure ()	1420	&& !enable_secure ()
957	&& getenv ("LIBEV_FLAGS"))	1421	&& getenv ("LIBEV_FLAGS"))
958	flags = atoi (getenv ("LIBEV_FLAGS"));	1422	flags = atoi (getenv ("LIBEV_FLAGS"));
959		1423
960	if (!(flags & 0x0000ffffUL))	1424	if (!(flags & 0x0000ffffU))
961	flags |= ev_recommended_backends ();	1425	flags |= ev_recommended_backends ();
962
963	backend = 0;
964	backend_fd = -1;
965	#if EV_USE_INOTIFY
966	fs_fd = -2;
967	#endif
968		1426
969	#if EV_USE_PORT	1427	#if EV_USE_PORT
970	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1428	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
971	#endif	1429	#endif
972	#if EV_USE_KQUEUE	1430	#if EV_USE_KQUEUE
…		…
980	#endif	1438	#endif
981	#if EV_USE_SELECT	1439	#if EV_USE_SELECT
982	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1440	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
983	#endif	1441	#endif
984		1442
		1443	ev_prepare_init (&pending_w, pendingcb);
		1444
985	ev_init (&sigev, sigcb);	1445	ev_init (&pipe_w, pipecb);
986	ev_set_priority (&sigev, EV_MAXPRI);	1446	ev_set_priority (&pipe_w, EV_MAXPRI);
987	}	1447	}
988	}	1448	}
989		1449
		1450	/* free up a loop structure */
990	static void noinline	1451	static void noinline
991	loop_destroy (EV_P)	1452	loop_destroy (EV_P)
992	{	1453	{
993	int i;	1454	int i;
		1455
		1456	if (ev_is_active (&pipe_w))
		1457	{
		1458	ev_ref (EV_A); /* signal watcher */
		1459	ev_io_stop (EV_A_ &pipe_w);
		1460
		1461	#if EV_USE_EVENTFD
		1462	if (evfd >= 0)
		1463	close (evfd);
		1464	#endif
		1465
		1466	if (evpipe [0] >= 0)
		1467	{
		1468	close (evpipe [0]);
		1469	close (evpipe [1]);
		1470	}
		1471	}
994		1472
995	#if EV_USE_INOTIFY	1473	#if EV_USE_INOTIFY
996	if (fs_fd >= 0)	1474	if (fs_fd >= 0)
997	close (fs_fd);	1475	close (fs_fd);
998	#endif	1476	#endif
…		…
1022	#if EV_IDLE_ENABLE	1500	#if EV_IDLE_ENABLE
1023	array_free (idle, [i]);	1501	array_free (idle, [i]);
1024	#endif	1502	#endif
1025	}	1503	}
1026		1504
		1505	ev_free (anfds); anfdmax = 0;
		1506
1027	/* have to use the microsoft-never-gets-it-right macro */	1507	/* have to use the microsoft-never-gets-it-right macro */
		1508	array_free (rfeed, EMPTY);
1028	array_free (fdchange, EMPTY);	1509	array_free (fdchange, EMPTY);
1029	array_free (timer, EMPTY);	1510	array_free (timer, EMPTY);
1030	#if EV_PERIODIC_ENABLE	1511	#if EV_PERIODIC_ENABLE
1031	array_free (periodic, EMPTY);	1512	array_free (periodic, EMPTY);
1032	#endif	1513	#endif
		1514	#if EV_FORK_ENABLE
		1515	array_free (fork, EMPTY);
		1516	#endif
1033	array_free (prepare, EMPTY);	1517	array_free (prepare, EMPTY);
1034	array_free (check, EMPTY);	1518	array_free (check, EMPTY);
		1519	#if EV_ASYNC_ENABLE
		1520	array_free (async, EMPTY);
		1521	#endif
1035		1522
1036	backend = 0;	1523	backend = 0;
1037	}	1524	}
1038		1525
		1526	#if EV_USE_INOTIFY
1039	void inline_size infy_fork (EV_P);	1527	inline_size void infy_fork (EV_P);
		1528	#endif
1040		1529
1041	void inline_size	1530	inline_size void
1042	loop_fork (EV_P)	1531	loop_fork (EV_P)
1043	{	1532	{
1044	#if EV_USE_PORT	1533	#if EV_USE_PORT
1045	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1534	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1046	#endif	1535	#endif
…		…
1052	#endif	1541	#endif
1053	#if EV_USE_INOTIFY	1542	#if EV_USE_INOTIFY
1054	infy_fork (EV_A);	1543	infy_fork (EV_A);
1055	#endif	1544	#endif
1056		1545
1057	if (ev_is_active (&sigev))	1546	if (ev_is_active (&pipe_w))
1058	{	1547	{
1059	/* default loop */	1548	/* this "locks" the handlers against writing to the pipe */
		1549	/* while we modify the fd vars */
		1550	gotsig = 1;
		1551	#if EV_ASYNC_ENABLE
		1552	gotasync = 1;
		1553	#endif
1060		1554
1061	ev_ref (EV_A);	1555	ev_ref (EV_A);
1062	ev_io_stop (EV_A_ &sigev);	1556	ev_io_stop (EV_A_ &pipe_w);
		1557
		1558	#if EV_USE_EVENTFD
		1559	if (evfd >= 0)
		1560	close (evfd);
		1561	#endif
		1562
		1563	if (evpipe [0] >= 0)
		1564	{
1063	close (sigpipe [0]);	1565	close (evpipe [0]);
1064	close (sigpipe [1]);	1566	close (evpipe [1]);
		1567	}
1065		1568
1066	while (pipe (sigpipe))
1067	syserr ("(libev) error creating pipe");
1068
1069	siginit (EV_A);	1569	evpipe_init (EV_A);
		1570	/* now iterate over everything, in case we missed something */
		1571	pipecb (EV_A_ &pipe_w, EV_READ);
1070	}	1572	}
1071		1573
1072	postfork = 0;	1574	postfork = 0;
1073	}	1575	}
1074		1576
1075	#if EV_MULTIPLICITY	1577	#if EV_MULTIPLICITY
		1578
1076	struct ev_loop *	1579	struct ev_loop *
1077	ev_loop_new (unsigned int flags)	1580	ev_loop_new (unsigned int flags)
1078	{	1581	{
1079	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1582	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1080		1583
…		…
1096	}	1599	}
1097		1600
1098	void	1601	void
1099	ev_loop_fork (EV_P)	1602	ev_loop_fork (EV_P)
1100	{	1603	{
1101	postfork = 1;	1604	postfork = 1; /* must be in line with ev_default_fork */
1102	}	1605	}
1103		1606
		1607	#if EV_VERIFY
		1608	static void noinline
		1609	verify_watcher (EV_P_ W w)
		1610	{
		1611	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1612
		1613	if (w->pending)
		1614	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1615	}
		1616
		1617	static void noinline
		1618	verify_heap (EV_P_ ANHE *heap, int N)
		1619	{
		1620	int i;
		1621
		1622	for (i = HEAP0; i < N + HEAP0; ++i)
		1623	{
		1624	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1625	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1626	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1627
		1628	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1629	}
		1630	}
		1631
		1632	static void noinline
		1633	array_verify (EV_P_ W *ws, int cnt)
		1634	{
		1635	while (cnt--)
		1636	{
		1637	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1638	verify_watcher (EV_A_ ws [cnt]);
		1639	}
		1640	}
		1641	#endif
		1642
		1643	void
		1644	ev_loop_verify (EV_P)
		1645	{
		1646	#if EV_VERIFY
		1647	int i;
		1648	WL w;
		1649
		1650	assert (activecnt >= -1);
		1651
		1652	assert (fdchangemax >= fdchangecnt);
		1653	for (i = 0; i < fdchangecnt; ++i)
		1654	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1655
		1656	assert (anfdmax >= 0);
		1657	for (i = 0; i < anfdmax; ++i)
		1658	for (w = anfds [i].head; w; w = w->next)
		1659	{
		1660	verify_watcher (EV_A_ (W)w);
		1661	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1662	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1663	}
		1664
		1665	assert (timermax >= timercnt);
		1666	verify_heap (EV_A_ timers, timercnt);
		1667
		1668	#if EV_PERIODIC_ENABLE
		1669	assert (periodicmax >= periodiccnt);
		1670	verify_heap (EV_A_ periodics, periodiccnt);
		1671	#endif
		1672
		1673	for (i = NUMPRI; i--; )
		1674	{
		1675	assert (pendingmax [i] >= pendingcnt [i]);
		1676	#if EV_IDLE_ENABLE
		1677	assert (idleall >= 0);
		1678	assert (idlemax [i] >= idlecnt [i]);
		1679	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1680	#endif
		1681	}
		1682
		1683	#if EV_FORK_ENABLE
		1684	assert (forkmax >= forkcnt);
		1685	array_verify (EV_A_ (W *)forks, forkcnt);
		1686	#endif
		1687
		1688	#if EV_ASYNC_ENABLE
		1689	assert (asyncmax >= asynccnt);
		1690	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1691	#endif
		1692
		1693	assert (preparemax >= preparecnt);
		1694	array_verify (EV_A_ (W *)prepares, preparecnt);
		1695
		1696	assert (checkmax >= checkcnt);
		1697	array_verify (EV_A_ (W *)checks, checkcnt);
		1698
		1699	# if 0
		1700	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1701	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1104	#endif	1702	# endif
		1703	#endif
		1704	}
		1705
		1706	#endif /* multiplicity */
1105		1707
1106	#if EV_MULTIPLICITY	1708	#if EV_MULTIPLICITY
1107	struct ev_loop *	1709	struct ev_loop *
1108	ev_default_loop_init (unsigned int flags)	1710	ev_default_loop_init (unsigned int flags)
1109	#else	1711	#else
1110	int	1712	int
1111	ev_default_loop (unsigned int flags)	1713	ev_default_loop (unsigned int flags)
1112	#endif	1714	#endif
1113	{	1715	{
1114	if (sigpipe [0] == sigpipe [1])
1115	if (pipe (sigpipe))
1116	return 0;
1117
1118	if (!ev_default_loop_ptr)	1716	if (!ev_default_loop_ptr)
1119	{	1717	{
1120	#if EV_MULTIPLICITY	1718	#if EV_MULTIPLICITY
1121	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1719	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1122	#else	1720	#else
…		…
1125		1723
1126	loop_init (EV_A_ flags);	1724	loop_init (EV_A_ flags);
1127		1725
1128	if (ev_backend (EV_A))	1726	if (ev_backend (EV_A))
1129	{	1727	{
1130	siginit (EV_A);
1131
1132	#ifndef _WIN32	1728	#ifndef _WIN32
1133	ev_signal_init (&childev, childcb, SIGCHLD);	1729	ev_signal_init (&childev, childcb, SIGCHLD);
1134	ev_set_priority (&childev, EV_MAXPRI);	1730	ev_set_priority (&childev, EV_MAXPRI);
1135	ev_signal_start (EV_A_ &childev);	1731	ev_signal_start (EV_A_ &childev);
1136	ev_unref (EV_A); /* child watcher should not keep loop alive */	1732	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1148	{	1744	{
1149	#if EV_MULTIPLICITY	1745	#if EV_MULTIPLICITY
1150	struct ev_loop *loop = ev_default_loop_ptr;	1746	struct ev_loop *loop = ev_default_loop_ptr;
1151	#endif	1747	#endif
1152		1748
		1749	ev_default_loop_ptr = 0;
		1750
1153	#ifndef _WIN32	1751	#ifndef _WIN32
1154	ev_ref (EV_A); /* child watcher */	1752	ev_ref (EV_A); /* child watcher */
1155	ev_signal_stop (EV_A_ &childev);	1753	ev_signal_stop (EV_A_ &childev);
1156	#endif	1754	#endif
1157		1755
1158	ev_ref (EV_A); /* signal watcher */
1159	ev_io_stop (EV_A_ &sigev);
1160
1161	close (sigpipe [0]); sigpipe [0] = 0;
1162	close (sigpipe [1]); sigpipe [1] = 0;
1163
1164	loop_destroy (EV_A);	1756	loop_destroy (EV_A);
1165	}	1757	}
1166		1758
1167	void	1759	void
1168	ev_default_fork (void)	1760	ev_default_fork (void)
1169	{	1761	{
1170	#if EV_MULTIPLICITY	1762	#if EV_MULTIPLICITY
1171	struct ev_loop *loop = ev_default_loop_ptr;	1763	struct ev_loop *loop = ev_default_loop_ptr;
1172	#endif	1764	#endif
1173		1765
1174	if (backend)	1766	postfork = 1; /* must be in line with ev_loop_fork */
1175	postfork = 1;
1176	}	1767	}
1177		1768
1178	/*****************************************************************************/	1769	/*****************************************************************************/
1179		1770
1180	void	1771	void
1181	ev_invoke (EV_P_ void *w, int revents)	1772	ev_invoke (EV_P_ void *w, int revents)
1182	{	1773	{
1183	EV_CB_INVOKE ((W)w, revents);	1774	EV_CB_INVOKE ((W)w, revents);
1184	}	1775	}
1185		1776
1186	void inline_speed	1777	inline_speed void
1187	call_pending (EV_P)	1778	call_pending (EV_P)
1188	{	1779	{
1189	int pri;	1780	int pri;
1190		1781
1191	for (pri = NUMPRI; pri--; )	1782	for (pri = NUMPRI; pri--; )
1192	while (pendingcnt [pri])	1783	while (pendingcnt [pri])
1193	{	1784	{
1194	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1785	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1195		1786
1196	if (expect_true (p->w))
1197	{
1198	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1787	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1788	/* ^ this is no longer true, as pending_w could be here */
1199		1789
1200	p->w->pending = 0;	1790	p->w->pending = 0;
1201	EV_CB_INVOKE (p->w, p->events);	1791	EV_CB_INVOKE (p->w, p->events);
1202	}	1792	EV_FREQUENT_CHECK;
1203	}	1793	}
1204	}	1794	}
1205		1795
1206	void inline_size
1207	timers_reify (EV_P)
1208	{
1209	while (timercnt && ((WT)timers [0])->at <= mn_now)
1210	{
1211	ev_timer *w = timers [0];
1212
1213	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1214
1215	/* first reschedule or stop timer */
1216	if (w->repeat)
1217	{
1218	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1219
1220	((WT)w)->at += w->repeat;
1221	if (((WT)w)->at < mn_now)
1222	((WT)w)->at = mn_now;
1223
1224	downheap ((WT *)timers, timercnt, 0);
1225	}
1226	else
1227	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1228
1229	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1230	}
1231	}
1232
1233	#if EV_PERIODIC_ENABLE
1234	void inline_size
1235	periodics_reify (EV_P)
1236	{
1237	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1238	{
1239	ev_periodic *w = periodics [0];
1240
1241	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1242
1243	/* first reschedule or stop timer */
1244	if (w->reschedule_cb)
1245	{
1246	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1247	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1248	downheap ((WT *)periodics, periodiccnt, 0);
1249	}
1250	else if (w->interval)
1251	{
1252	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1253	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1254	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1255	downheap ((WT *)periodics, periodiccnt, 0);
1256	}
1257	else
1258	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1259
1260	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1261	}
1262	}
1263
1264	static void noinline
1265	periodics_reschedule (EV_P)
1266	{
1267	int i;
1268
1269	/* adjust periodics after time jump */
1270	for (i = 0; i < periodiccnt; ++i)
1271	{
1272	ev_periodic *w = periodics [i];
1273
1274	if (w->reschedule_cb)
1275	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1276	else if (w->interval)
1277	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1278	}
1279
1280	/* now rebuild the heap */
1281	for (i = periodiccnt >> 1; i--; )
1282	downheap ((WT *)periodics, periodiccnt, i);
1283	}
1284	#endif
1285
1286	#if EV_IDLE_ENABLE	1796	#if EV_IDLE_ENABLE
1287	void inline_size	1797	/* make idle watchers pending. this handles the "call-idle */
		1798	/* only when higher priorities are idle" logic */
		1799	inline_size void
1288	idle_reify (EV_P)	1800	idle_reify (EV_P)
1289	{	1801	{
1290	if (expect_false (idleall))	1802	if (expect_false (idleall))
1291	{	1803	{
1292	int pri;	1804	int pri;
…		…
1304	}	1816	}
1305	}	1817	}
1306	}	1818	}
1307	#endif	1819	#endif
1308		1820
1309	void inline_speed	1821	/* make timers pending */
		1822	inline_size void
		1823	timers_reify (EV_P)
		1824	{
		1825	EV_FREQUENT_CHECK;
		1826
		1827	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		1828	{
		1829	do
		1830	{
		1831	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1832
		1833	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1834
		1835	/* first reschedule or stop timer */
		1836	if (w->repeat)
		1837	{
		1838	ev_at (w) += w->repeat;
		1839	if (ev_at (w) < mn_now)
		1840	ev_at (w) = mn_now;
		1841
		1842	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1843
		1844	ANHE_at_cache (timers [HEAP0]);
		1845	downheap (timers, timercnt, HEAP0);
		1846	}
		1847	else
		1848	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1849
		1850	EV_FREQUENT_CHECK;
		1851	feed_reverse (EV_A_ (W)w);
		1852	}
		1853	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
		1854
		1855	feed_reverse_done (EV_A_ EV_TIMEOUT);
		1856	}
		1857	}
		1858
		1859	#if EV_PERIODIC_ENABLE
		1860	/* make periodics pending */
		1861	inline_size void
		1862	periodics_reify (EV_P)
		1863	{
		1864	EV_FREQUENT_CHECK;
		1865
		1866	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		1867	{
		1868	int feed_count = 0;
		1869
		1870	do
		1871	{
		1872	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1873
		1874	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1875
		1876	/* first reschedule or stop timer */
		1877	if (w->reschedule_cb)
		1878	{
		1879	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1880
		1881	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		1882
		1883	ANHE_at_cache (periodics [HEAP0]);
		1884	downheap (periodics, periodiccnt, HEAP0);
		1885	}
		1886	else if (w->interval)
		1887	{
		1888	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1889	/* if next trigger time is not sufficiently in the future, put it there */
		1890	/* this might happen because of floating point inexactness */
		1891	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1892	{
		1893	ev_at (w) += w->interval;
		1894
		1895	/* if interval is unreasonably low we might still have a time in the past */
		1896	/* so correct this. this will make the periodic very inexact, but the user */
		1897	/* has effectively asked to get triggered more often than possible */
		1898	if (ev_at (w) < ev_rt_now)
		1899	ev_at (w) = ev_rt_now;
		1900	}
		1901
		1902	ANHE_at_cache (periodics [HEAP0]);
		1903	downheap (periodics, periodiccnt, HEAP0);
		1904	}
		1905	else
		1906	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1907
		1908	EV_FREQUENT_CHECK;
		1909	feed_reverse (EV_A_ (W)w);
		1910	}
		1911	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
		1912
		1913	feed_reverse_done (EV_A_ EV_PERIODIC);
		1914	}
		1915	}
		1916
		1917	/* simply recalculate all periodics */
		1918	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
		1919	static void noinline
		1920	periodics_reschedule (EV_P)
		1921	{
		1922	int i;
		1923
		1924	/* adjust periodics after time jump */
		1925	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		1926	{
		1927	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		1928
		1929	if (w->reschedule_cb)
		1930	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1931	else if (w->interval)
		1932	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1933
		1934	ANHE_at_cache (periodics [i]);
		1935	}
		1936
		1937	reheap (periodics, periodiccnt);
		1938	}
		1939	#endif
		1940
		1941	/* adjust all timers by a given offset */
		1942	static void noinline
		1943	timers_reschedule (EV_P_ ev_tstamp adjust)
		1944	{
		1945	int i;
		1946
		1947	for (i = 0; i < timercnt; ++i)
		1948	{
		1949	ANHE *he = timers + i + HEAP0;
		1950	ANHE_w (*he)->at += adjust;
		1951	ANHE_at_cache (*he);
		1952	}
		1953	}
		1954
		1955	/* fetch new monotonic and realtime times from the kernel */
		1956	/* also detetc if there was a timejump, and act accordingly */
		1957	inline_speed void
1310	time_update (EV_P_ ev_tstamp max_block)	1958	time_update (EV_P_ ev_tstamp max_block)
1311	{	1959	{
1312	int i;
1313
1314	#if EV_USE_MONOTONIC	1960	#if EV_USE_MONOTONIC
1315	if (expect_true (have_monotonic))	1961	if (expect_true (have_monotonic))
1316	{	1962	{
		1963	int i;
1317	ev_tstamp odiff = rtmn_diff;	1964	ev_tstamp odiff = rtmn_diff;
1318		1965
1319	mn_now = get_clock ();	1966	mn_now = get_clock ();
1320		1967
1321	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	1968	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1339	*/	1986	*/
1340	for (i = 4; --i; )	1987	for (i = 4; --i; )
1341	{	1988	{
1342	rtmn_diff = ev_rt_now - mn_now;	1989	rtmn_diff = ev_rt_now - mn_now;
1343		1990
1344	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1991	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1345	return; /* all is well */	1992	return; /* all is well */
1346		1993
1347	ev_rt_now = ev_time ();	1994	ev_rt_now = ev_time ();
1348	mn_now = get_clock ();	1995	mn_now = get_clock ();
1349	now_floor = mn_now;	1996	now_floor = mn_now;
1350	}	1997	}
1351		1998
		1999	/* no timer adjustment, as the monotonic clock doesn't jump */
		2000	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1352	# if EV_PERIODIC_ENABLE	2001	# if EV_PERIODIC_ENABLE
1353	periodics_reschedule (EV_A);	2002	periodics_reschedule (EV_A);
1354	# endif	2003	# endif
1355	/* no timer adjustment, as the monotonic clock doesn't jump */
1356	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1357	}	2004	}
1358	else	2005	else
1359	#endif	2006	#endif
1360	{	2007	{
1361	ev_rt_now = ev_time ();	2008	ev_rt_now = ev_time ();
1362		2009
1363	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2010	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1364	{	2011	{
		2012	/* adjust timers. this is easy, as the offset is the same for all of them */
		2013	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1365	#if EV_PERIODIC_ENABLE	2014	#if EV_PERIODIC_ENABLE
1366	periodics_reschedule (EV_A);	2015	periodics_reschedule (EV_A);
1367	#endif	2016	#endif
1368	/* adjust timers. this is easy, as the offset is the same for all of them */
1369	for (i = 0; i < timercnt; ++i)
1370	((WT)timers [i])->at += ev_rt_now - mn_now;
1371	}	2017	}
1372		2018
1373	mn_now = ev_rt_now;	2019	mn_now = ev_rt_now;
1374	}	2020	}
1375	}	2021	}
1376		2022
1377	void
1378	ev_ref (EV_P)
1379	{
1380	++activecnt;
1381	}
1382
1383	void
1384	ev_unref (EV_P)
1385	{
1386	--activecnt;
1387	}
1388
1389	static int loop_done;	2023	static int loop_done;
1390		2024
1391	void	2025	void
1392	ev_loop (EV_P_ int flags)	2026	ev_loop (EV_P_ int flags)
1393	{	2027	{
1394	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	2028	loop_done = EVUNLOOP_CANCEL;
1395	? EVUNLOOP_ONE
1396	: EVUNLOOP_CANCEL;
1397		2029
1398	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2030	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1399		2031
1400	do	2032	do
1401	{	2033	{
		2034	#if EV_VERIFY >= 2
		2035	ev_loop_verify (EV_A);
		2036	#endif
		2037
1402	#ifndef _WIN32	2038	#ifndef _WIN32
1403	if (expect_false (curpid)) /* penalise the forking check even more */	2039	if (expect_false (curpid)) /* penalise the forking check even more */
1404	if (expect_false (getpid () != curpid))	2040	if (expect_false (getpid () != curpid))
1405	{	2041	{
1406	curpid = getpid ();	2042	curpid = getpid ();
…		…
1423	{	2059	{
1424	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2060	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1425	call_pending (EV_A);	2061	call_pending (EV_A);
1426	}	2062	}
1427		2063
1428	if (expect_false (!activecnt))
1429	break;
1430
1431	/* we might have forked, so reify kernel state if necessary */	2064	/* we might have forked, so reify kernel state if necessary */
1432	if (expect_false (postfork))	2065	if (expect_false (postfork))
1433	loop_fork (EV_A);	2066	loop_fork (EV_A);
1434		2067
1435	/* update fd-related kernel structures */	2068	/* update fd-related kernel structures */
1436	fd_reify (EV_A);	2069	fd_reify (EV_A);
1437		2070
1438	/* calculate blocking time */	2071	/* calculate blocking time */
1439	{	2072	{
1440	ev_tstamp block;	2073	ev_tstamp waittime = 0.;
		2074	ev_tstamp sleeptime = 0.;
1441		2075
1442	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))	2076	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1443	block = 0.; /* do not block at all */
1444	else
1445	{	2077	{
1446	/* update time to cancel out callback processing overhead */	2078	/* update time to cancel out callback processing overhead */
1447	time_update (EV_A_ 1e100);	2079	time_update (EV_A_ 1e100);
1448		2080
1449	block = MAX_BLOCKTIME;	2081	waittime = MAX_BLOCKTIME;
1450		2082
1451	if (timercnt)	2083	if (timercnt)
1452	{	2084	{
1453	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	2085	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1454	if (block > to) block = to;	2086	if (waittime > to) waittime = to;
1455	}	2087	}
1456		2088
1457	#if EV_PERIODIC_ENABLE	2089	#if EV_PERIODIC_ENABLE
1458	if (periodiccnt)	2090	if (periodiccnt)
1459	{	2091	{
1460	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	2092	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1461	if (block > to) block = to;	2093	if (waittime > to) waittime = to;
1462	}	2094	}
1463	#endif	2095	#endif
1464		2096
1465	if (expect_false (block < 0.)) block = 0.;	2097	if (expect_false (waittime < timeout_blocktime))
		2098	waittime = timeout_blocktime;
		2099
		2100	sleeptime = waittime - backend_fudge;
		2101
		2102	if (expect_true (sleeptime > io_blocktime))
		2103	sleeptime = io_blocktime;
		2104
		2105	if (sleeptime)
		2106	{
		2107	ev_sleep (sleeptime);
		2108	waittime -= sleeptime;
		2109	}
1466	}	2110	}
1467		2111
1468	++loop_count;	2112	++loop_count;
1469	backend_poll (EV_A_ block);	2113	backend_poll (EV_A_ waittime);
1470		2114
1471	/* update ev_rt_now, do magic */	2115	/* update ev_rt_now, do magic */
1472	time_update (EV_A_ block);	2116	time_update (EV_A_ waittime + sleeptime);
1473	}	2117	}
1474		2118
1475	/* queue pending timers and reschedule them */	2119	/* queue pending timers and reschedule them */
1476	timers_reify (EV_A); /* relative timers called last */	2120	timers_reify (EV_A); /* relative timers called last */
1477	#if EV_PERIODIC_ENABLE	2121	#if EV_PERIODIC_ENABLE
…		…
1486	/* queue check watchers, to be executed first */	2130	/* queue check watchers, to be executed first */
1487	if (expect_false (checkcnt))	2131	if (expect_false (checkcnt))
1488	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2132	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1489		2133
1490	call_pending (EV_A);	2134	call_pending (EV_A);
1491
1492	}	2135	}
1493	while (expect_true (activecnt && !loop_done));	2136	while (expect_true (
		2137	activecnt
		2138	&& !loop_done
		2139	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		2140	));
1494		2141
1495	if (loop_done == EVUNLOOP_ONE)	2142	if (loop_done == EVUNLOOP_ONE)
1496	loop_done = EVUNLOOP_CANCEL;	2143	loop_done = EVUNLOOP_CANCEL;
1497	}	2144	}
1498		2145
…		…
1500	ev_unloop (EV_P_ int how)	2147	ev_unloop (EV_P_ int how)
1501	{	2148	{
1502	loop_done = how;	2149	loop_done = how;
1503	}	2150	}
1504		2151
		2152	void
		2153	ev_ref (EV_P)
		2154	{
		2155	++activecnt;
		2156	}
		2157
		2158	void
		2159	ev_unref (EV_P)
		2160	{
		2161	--activecnt;
		2162	}
		2163
		2164	void
		2165	ev_now_update (EV_P)
		2166	{
		2167	time_update (EV_A_ 1e100);
		2168	}
		2169
		2170	void
		2171	ev_suspend (EV_P)
		2172	{
		2173	ev_now_update (EV_A);
		2174	}
		2175
		2176	void
		2177	ev_resume (EV_P)
		2178	{
		2179	ev_tstamp mn_prev = mn_now;
		2180
		2181	ev_now_update (EV_A);
		2182	timers_reschedule (EV_A_ mn_now - mn_prev);
		2183	#if EV_PERIODIC_ENABLE
		2184	/* TODO: really do this? */
		2185	periodics_reschedule (EV_A);
		2186	#endif
		2187	}
		2188
1505	/*****************************************************************************/	2189	/*****************************************************************************/
		2190	/* singly-linked list management, used when the expected list length is short */
1506		2191
1507	void inline_size	2192	inline_size void
1508	wlist_add (WL *head, WL elem)	2193	wlist_add (WL *head, WL elem)
1509	{	2194	{
1510	elem->next = *head;	2195	elem->next = *head;
1511	*head = elem;	2196	*head = elem;
1512	}	2197	}
1513		2198
1514	void inline_size	2199	inline_size void
1515	wlist_del (WL *head, WL elem)	2200	wlist_del (WL *head, WL elem)
1516	{	2201	{
1517	while (*head)	2202	while (*head)
1518	{	2203	{
1519	if (*head == elem)	2204	if (*head == elem)
…		…
1524		2209
1525	head = &(*head)->next;	2210	head = &(*head)->next;
1526	}	2211	}
1527	}	2212	}
1528		2213
1529	void inline_speed	2214	/* internal, faster, version of ev_clear_pending */
		2215	inline_speed void
1530	clear_pending (EV_P_ W w)	2216	clear_pending (EV_P_ W w)
1531	{	2217	{
1532	if (w->pending)	2218	if (w->pending)
1533	{	2219	{
1534	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2220	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1535	w->pending = 0;	2221	w->pending = 0;
1536	}	2222	}
1537	}	2223	}
1538		2224
1539	int	2225	int
…		…
1543	int pending = w_->pending;	2229	int pending = w_->pending;
1544		2230
1545	if (expect_true (pending))	2231	if (expect_true (pending))
1546	{	2232	{
1547	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2233	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2234	p->w = (W)&pending_w;
1548	w_->pending = 0;	2235	w_->pending = 0;
1549	p->w = 0;
1550	return p->events;	2236	return p->events;
1551	}	2237	}
1552	else	2238	else
1553	return 0;	2239	return 0;
1554	}	2240	}
1555		2241
1556	void inline_size	2242	inline_size void
1557	pri_adjust (EV_P_ W w)	2243	pri_adjust (EV_P_ W w)
1558	{	2244	{
1559	int pri = w->priority;	2245	int pri = w->priority;
1560	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2246	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1561	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2247	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1562	w->priority = pri;	2248	w->priority = pri;
1563	}	2249	}
1564		2250
1565	void inline_speed	2251	inline_speed void
1566	ev_start (EV_P_ W w, int active)	2252	ev_start (EV_P_ W w, int active)
1567	{	2253	{
1568	pri_adjust (EV_A_ w);	2254	pri_adjust (EV_A_ w);
1569	w->active = active;	2255	w->active = active;
1570	ev_ref (EV_A);	2256	ev_ref (EV_A);
1571	}	2257	}
1572		2258
1573	void inline_size	2259	inline_size void
1574	ev_stop (EV_P_ W w)	2260	ev_stop (EV_P_ W w)
1575	{	2261	{
1576	ev_unref (EV_A);	2262	ev_unref (EV_A);
1577	w->active = 0;	2263	w->active = 0;
1578	}	2264	}
…		…
1585	int fd = w->fd;	2271	int fd = w->fd;
1586		2272
1587	if (expect_false (ev_is_active (w)))	2273	if (expect_false (ev_is_active (w)))
1588	return;	2274	return;
1589		2275
1590	assert (("ev_io_start called with negative fd", fd >= 0));	2276	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2277	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2278
		2279	EV_FREQUENT_CHECK;
1591		2280
1592	ev_start (EV_A_ (W)w, 1);	2281	ev_start (EV_A_ (W)w, 1);
1593	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2282	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1594	wlist_add ((WL *)&anfds[fd].head, (WL)w);	2283	wlist_add (&anfds[fd].head, (WL)w);
1595		2284
1596	fd_change (EV_A_ fd);	2285	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
		2286	w->events &= ~EV__IOFDSET;
		2287
		2288	EV_FREQUENT_CHECK;
1597	}	2289	}
1598		2290
1599	void noinline	2291	void noinline
1600	ev_io_stop (EV_P_ ev_io *w)	2292	ev_io_stop (EV_P_ ev_io *w)
1601	{	2293	{
1602	clear_pending (EV_A_ (W)w);	2294	clear_pending (EV_A_ (W)w);
1603	if (expect_false (!ev_is_active (w)))	2295	if (expect_false (!ev_is_active (w)))
1604	return;	2296	return;
1605		2297
1606	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2298	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1607		2299
		2300	EV_FREQUENT_CHECK;
		2301
1608	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	2302	wlist_del (&anfds[w->fd].head, (WL)w);
1609	ev_stop (EV_A_ (W)w);	2303	ev_stop (EV_A_ (W)w);
1610		2304
1611	fd_change (EV_A_ w->fd);	2305	fd_change (EV_A_ w->fd, 1);
		2306
		2307	EV_FREQUENT_CHECK;
1612	}	2308	}
1613		2309
1614	void noinline	2310	void noinline
1615	ev_timer_start (EV_P_ ev_timer *w)	2311	ev_timer_start (EV_P_ ev_timer *w)
1616	{	2312	{
1617	if (expect_false (ev_is_active (w)))	2313	if (expect_false (ev_is_active (w)))
1618	return;	2314	return;
1619		2315
1620	((WT)w)->at += mn_now;	2316	ev_at (w) += mn_now;
1621		2317
1622	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2318	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1623		2319
		2320	EV_FREQUENT_CHECK;
		2321
		2322	++timercnt;
1624	ev_start (EV_A_ (W)w, ++timercnt);	2323	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1625	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	2324	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1626	timers [timercnt - 1] = w;	2325	ANHE_w (timers [ev_active (w)]) = (WT)w;
1627	upheap ((WT *)timers, timercnt - 1);	2326	ANHE_at_cache (timers [ev_active (w)]);
		2327	upheap (timers, ev_active (w));
1628		2328
		2329	EV_FREQUENT_CHECK;
		2330
1629	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	2331	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1630	}	2332	}
1631		2333
1632	void noinline	2334	void noinline
1633	ev_timer_stop (EV_P_ ev_timer *w)	2335	ev_timer_stop (EV_P_ ev_timer *w)
1634	{	2336	{
1635	clear_pending (EV_A_ (W)w);	2337	clear_pending (EV_A_ (W)w);
1636	if (expect_false (!ev_is_active (w)))	2338	if (expect_false (!ev_is_active (w)))
1637	return;	2339	return;
1638		2340
1639	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	2341	EV_FREQUENT_CHECK;
1640		2342
1641	{	2343	{
1642	int active = ((W)w)->active;	2344	int active = ev_active (w);
1643		2345
		2346	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2347
		2348	--timercnt;
		2349
1644	if (expect_true (--active < --timercnt))	2350	if (expect_true (active < timercnt + HEAP0))
1645	{	2351	{
1646	timers [active] = timers [timercnt];	2352	timers [active] = timers [timercnt + HEAP0];
1647	adjustheap ((WT *)timers, timercnt, active);	2353	adjustheap (timers, timercnt, active);
1648	}	2354	}
1649	}	2355	}
1650		2356
1651	((WT)w)->at -= mn_now;	2357	EV_FREQUENT_CHECK;
		2358
		2359	ev_at (w) -= mn_now;
1652		2360
1653	ev_stop (EV_A_ (W)w);	2361	ev_stop (EV_A_ (W)w);
1654	}	2362	}
1655		2363
1656	void noinline	2364	void noinline
1657	ev_timer_again (EV_P_ ev_timer *w)	2365	ev_timer_again (EV_P_ ev_timer *w)
1658	{	2366	{
		2367	EV_FREQUENT_CHECK;
		2368
1659	if (ev_is_active (w))	2369	if (ev_is_active (w))
1660	{	2370	{
1661	if (w->repeat)	2371	if (w->repeat)
1662	{	2372	{
1663	((WT)w)->at = mn_now + w->repeat;	2373	ev_at (w) = mn_now + w->repeat;
		2374	ANHE_at_cache (timers [ev_active (w)]);
1664	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	2375	adjustheap (timers, timercnt, ev_active (w));
1665	}	2376	}
1666	else	2377	else
1667	ev_timer_stop (EV_A_ w);	2378	ev_timer_stop (EV_A_ w);
1668	}	2379	}
1669	else if (w->repeat)	2380	else if (w->repeat)
1670	{	2381	{
1671	w->at = w->repeat;	2382	ev_at (w) = w->repeat;
1672	ev_timer_start (EV_A_ w);	2383	ev_timer_start (EV_A_ w);
1673	}	2384	}
		2385
		2386	EV_FREQUENT_CHECK;
1674	}	2387	}
1675		2388
1676	#if EV_PERIODIC_ENABLE	2389	#if EV_PERIODIC_ENABLE
1677	void noinline	2390	void noinline
1678	ev_periodic_start (EV_P_ ev_periodic *w)	2391	ev_periodic_start (EV_P_ ev_periodic *w)
1679	{	2392	{
1680	if (expect_false (ev_is_active (w)))	2393	if (expect_false (ev_is_active (w)))
1681	return;	2394	return;
1682		2395
1683	if (w->reschedule_cb)	2396	if (w->reschedule_cb)
1684	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2397	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1685	else if (w->interval)	2398	else if (w->interval)
1686	{	2399	{
1687	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2400	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1688	/* this formula differs from the one in periodic_reify because we do not always round up */	2401	/* this formula differs from the one in periodic_reify because we do not always round up */
1689	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2402	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1690	}	2403	}
1691	else	2404	else
1692	((WT)w)->at = w->offset;	2405	ev_at (w) = w->offset;
1693		2406
		2407	EV_FREQUENT_CHECK;
		2408
		2409	++periodiccnt;
1694	ev_start (EV_A_ (W)w, ++periodiccnt);	2410	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1695	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	2411	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1696	periodics [periodiccnt - 1] = w;	2412	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1697	upheap ((WT *)periodics, periodiccnt - 1);	2413	ANHE_at_cache (periodics [ev_active (w)]);
		2414	upheap (periodics, ev_active (w));
1698		2415
		2416	EV_FREQUENT_CHECK;
		2417
1699	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	2418	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1700	}	2419	}
1701		2420
1702	void noinline	2421	void noinline
1703	ev_periodic_stop (EV_P_ ev_periodic *w)	2422	ev_periodic_stop (EV_P_ ev_periodic *w)
1704	{	2423	{
1705	clear_pending (EV_A_ (W)w);	2424	clear_pending (EV_A_ (W)w);
1706	if (expect_false (!ev_is_active (w)))	2425	if (expect_false (!ev_is_active (w)))
1707	return;	2426	return;
1708		2427
1709	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	2428	EV_FREQUENT_CHECK;
1710		2429
1711	{	2430	{
1712	int active = ((W)w)->active;	2431	int active = ev_active (w);
1713		2432
		2433	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2434
		2435	--periodiccnt;
		2436
1714	if (expect_true (--active < --periodiccnt))	2437	if (expect_true (active < periodiccnt + HEAP0))
1715	{	2438	{
1716	periodics [active] = periodics [periodiccnt];	2439	periodics [active] = periodics [periodiccnt + HEAP0];
1717	adjustheap ((WT *)periodics, periodiccnt, active);	2440	adjustheap (periodics, periodiccnt, active);
1718	}	2441	}
1719	}	2442	}
		2443
		2444	EV_FREQUENT_CHECK;
1720		2445
1721	ev_stop (EV_A_ (W)w);	2446	ev_stop (EV_A_ (W)w);
1722	}	2447	}
1723		2448
1724	void noinline	2449	void noinline
…		…
1736		2461
1737	void noinline	2462	void noinline
1738	ev_signal_start (EV_P_ ev_signal *w)	2463	ev_signal_start (EV_P_ ev_signal *w)
1739	{	2464	{
1740	#if EV_MULTIPLICITY	2465	#if EV_MULTIPLICITY
1741	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2466	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1742	#endif	2467	#endif
1743	if (expect_false (ev_is_active (w)))	2468	if (expect_false (ev_is_active (w)))
1744	return;	2469	return;
1745		2470
1746	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2471	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
		2472
		2473	evpipe_init (EV_A);
		2474
		2475	EV_FREQUENT_CHECK;
		2476
		2477	{
		2478	#ifndef _WIN32
		2479	sigset_t full, prev;
		2480	sigfillset (&full);
		2481	sigprocmask (SIG_SETMASK, &full, &prev);
		2482	#endif
		2483
		2484	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
		2485
		2486	#ifndef _WIN32
		2487	sigprocmask (SIG_SETMASK, &prev, 0);
		2488	#endif
		2489	}
1747		2490
1748	ev_start (EV_A_ (W)w, 1);	2491	ev_start (EV_A_ (W)w, 1);
1749	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1750	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2492	wlist_add (&signals [w->signum - 1].head, (WL)w);
1751		2493
1752	if (!((WL)w)->next)	2494	if (!((WL)w)->next)
1753	{	2495	{
1754	#if _WIN32	2496	#if _WIN32
1755	signal (w->signum, sighandler);	2497	signal (w->signum, ev_sighandler);
1756	#else	2498	#else
1757	struct sigaction sa;	2499	struct sigaction sa;
1758	sa.sa_handler = sighandler;	2500	sa.sa_handler = ev_sighandler;
1759	sigfillset (&sa.sa_mask);	2501	sigfillset (&sa.sa_mask);
1760	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2502	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1761	sigaction (w->signum, &sa, 0);	2503	sigaction (w->signum, &sa, 0);
1762	#endif	2504	#endif
1763	}	2505	}
		2506
		2507	EV_FREQUENT_CHECK;
1764	}	2508	}
1765		2509
1766	void noinline	2510	void noinline
1767	ev_signal_stop (EV_P_ ev_signal *w)	2511	ev_signal_stop (EV_P_ ev_signal *w)
1768	{	2512	{
1769	clear_pending (EV_A_ (W)w);	2513	clear_pending (EV_A_ (W)w);
1770	if (expect_false (!ev_is_active (w)))	2514	if (expect_false (!ev_is_active (w)))
1771	return;	2515	return;
1772		2516
		2517	EV_FREQUENT_CHECK;
		2518
1773	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2519	wlist_del (&signals [w->signum - 1].head, (WL)w);
1774	ev_stop (EV_A_ (W)w);	2520	ev_stop (EV_A_ (W)w);
1775		2521
1776	if (!signals [w->signum - 1].head)	2522	if (!signals [w->signum - 1].head)
1777	signal (w->signum, SIG_DFL);	2523	signal (w->signum, SIG_DFL);
		2524
		2525	EV_FREQUENT_CHECK;
1778	}	2526	}
1779		2527
1780	void	2528	void
1781	ev_child_start (EV_P_ ev_child *w)	2529	ev_child_start (EV_P_ ev_child *w)
1782	{	2530	{
1783	#if EV_MULTIPLICITY	2531	#if EV_MULTIPLICITY
1784	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2532	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1785	#endif	2533	#endif
1786	if (expect_false (ev_is_active (w)))	2534	if (expect_false (ev_is_active (w)))
1787	return;	2535	return;
1788		2536
		2537	EV_FREQUENT_CHECK;
		2538
1789	ev_start (EV_A_ (W)w, 1);	2539	ev_start (EV_A_ (W)w, 1);
1790	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2540	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2541
		2542	EV_FREQUENT_CHECK;
1791	}	2543	}
1792		2544
1793	void	2545	void
1794	ev_child_stop (EV_P_ ev_child *w)	2546	ev_child_stop (EV_P_ ev_child *w)
1795	{	2547	{
1796	clear_pending (EV_A_ (W)w);	2548	clear_pending (EV_A_ (W)w);
1797	if (expect_false (!ev_is_active (w)))	2549	if (expect_false (!ev_is_active (w)))
1798	return;	2550	return;
1799		2551
		2552	EV_FREQUENT_CHECK;
		2553
1800	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2554	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1801	ev_stop (EV_A_ (W)w);	2555	ev_stop (EV_A_ (W)w);
		2556
		2557	EV_FREQUENT_CHECK;
1802	}	2558	}
1803		2559
1804	#if EV_STAT_ENABLE	2560	#if EV_STAT_ENABLE
1805		2561
1806	# ifdef _WIN32	2562	# ifdef _WIN32
1807	# undef lstat	2563	# undef lstat
1808	# define lstat(a,b) _stati64 (a,b)	2564	# define lstat(a,b) _stati64 (a,b)
1809	# endif	2565	# endif
1810		2566
1811	#define DEF_STAT_INTERVAL 5.0074891	2567	#define DEF_STAT_INTERVAL 5.0074891
		2568	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1812	#define MIN_STAT_INTERVAL 0.1074891	2569	#define MIN_STAT_INTERVAL 0.1074891
1813		2570
1814	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2571	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1815		2572
1816	#if EV_USE_INOTIFY	2573	#if EV_USE_INOTIFY
1817	# define EV_INOTIFY_BUFSIZE 8192	2574	# define EV_INOTIFY_BUFSIZE 8192
…		…
1821	{	2578	{
1822	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);	2579	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);
1823		2580
1824	if (w->wd < 0)	2581	if (w->wd < 0)
1825	{	2582	{
		2583	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1826	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2584	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1827		2585
1828	/* monitor some parent directory for speedup hints */	2586	/* monitor some parent directory for speedup hints */
		2587	/* note that exceeding the hardcoded path limit is not a correctness issue, */
		2588	/* but an efficiency issue only */
1829	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2589	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1830	{	2590	{
1831	char path [4096];	2591	char path [4096];
1832	strcpy (path, w->path);	2592	strcpy (path, w->path);
1833		2593
…		…
1836	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2596	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1837	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2597	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1838		2598
1839	char *pend = strrchr (path, '/');	2599	char *pend = strrchr (path, '/');
1840		2600
1841	if (!pend)	2601	if (!pend || pend == path)
1842	break; /* whoops, no '/', complain to your admin */	2602	break;
1843		2603
1844	*pend = 0;	2604	*pend = 0;
1845	w->wd = inotify_add_watch (fs_fd, path, mask);	2605	w->wd = inotify_add_watch (fs_fd, path, mask);
1846	}	2606	}
1847	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2607	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1848	}	2608	}
1849	}	2609	}
1850	else
1851	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1852		2610
1853	if (w->wd >= 0)	2611	if (w->wd >= 0)
		2612	{
1854	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2613	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2614
		2615	/* now local changes will be tracked by inotify, but remote changes won't */
		2616	/* unless the filesystem it known to be local, we therefore still poll */
		2617	/* also do poll on <2.6.25, but with normal frequency */
		2618	struct statfs sfs;
		2619
		2620	if (fs_2625 && !statfs (w->path, &sfs))
		2621	if (sfs.f_type == 0x1373 /* devfs */
		2622	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2623	|| sfs.f_type == 0x3153464a /* jfs */
		2624	|| sfs.f_type == 0x52654973 /* reiser3 */
		2625	|| sfs.f_type == 0x01021994 /* tempfs */
		2626	|| sfs.f_type == 0x58465342 /* xfs */)
		2627	return;
		2628
		2629	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2630	ev_timer_again (EV_A_ &w->timer);
		2631	}
1855	}	2632	}
1856		2633
1857	static void noinline	2634	static void noinline
1858	infy_del (EV_P_ ev_stat *w)	2635	infy_del (EV_P_ ev_stat *w)
1859	{	2636	{
…		…
1873		2650
1874	static void noinline	2651	static void noinline
1875	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2652	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1876	{	2653	{
1877	if (slot < 0)	2654	if (slot < 0)
1878	/* overflow, need to check for all hahs slots */	2655	/* overflow, need to check for all hash slots */
1879	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2656	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1880	infy_wd (EV_A_ slot, wd, ev);	2657	infy_wd (EV_A_ slot, wd, ev);
1881	else	2658	else
1882	{	2659	{
1883	WL w_;	2660	WL w_;
…		…
1889		2666
1890	if (w->wd == wd || wd == -1)	2667	if (w->wd == wd || wd == -1)
1891	{	2668	{
1892	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2669	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1893	{	2670	{
		2671	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1894	w->wd = -1;	2672	w->wd = -1;
1895	infy_add (EV_A_ w); /* re-add, no matter what */	2673	infy_add (EV_A_ w); /* re-add, no matter what */
1896	}	2674	}
1897		2675
1898	stat_timer_cb (EV_A_ &w->timer, 0);	2676	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
1911		2689
1912	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2690	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1913	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2691	infy_wd (EV_A_ ev->wd, ev->wd, ev);
1914	}	2692	}
1915		2693
1916	void inline_size	2694	inline_size void
		2695	check_2625 (EV_P)
		2696	{
		2697	/* kernels < 2.6.25 are borked
		2698	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2699	*/
		2700	struct utsname buf;
		2701	int major, minor, micro;
		2702
		2703	if (uname (&buf))
		2704	return;
		2705
		2706	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2707	return;
		2708
		2709	if (major < 2
		2710	|| (major == 2 && minor < 6)
		2711	|| (major == 2 && minor == 6 && micro < 25))
		2712	return;
		2713
		2714	fs_2625 = 1;
		2715	}
		2716
		2717	inline_size void
1917	infy_init (EV_P)	2718	infy_init (EV_P)
1918	{	2719	{
1919	if (fs_fd != -2)	2720	if (fs_fd != -2)
1920	return;	2721	return;
		2722
		2723	fs_fd = -1;
		2724
		2725	check_2625 (EV_A);
1921		2726
1922	fs_fd = inotify_init ();	2727	fs_fd = inotify_init ();
1923		2728
1924	if (fs_fd >= 0)	2729	if (fs_fd >= 0)
1925	{	2730	{
…		…
1927	ev_set_priority (&fs_w, EV_MAXPRI);	2732	ev_set_priority (&fs_w, EV_MAXPRI);
1928	ev_io_start (EV_A_ &fs_w);	2733	ev_io_start (EV_A_ &fs_w);
1929	}	2734	}
1930	}	2735	}
1931		2736
1932	void inline_size	2737	inline_size void
1933	infy_fork (EV_P)	2738	infy_fork (EV_P)
1934	{	2739	{
1935	int slot;	2740	int slot;
1936		2741
1937	if (fs_fd < 0)	2742	if (fs_fd < 0)
…		…
1953	w->wd = -1;	2758	w->wd = -1;
1954		2759
1955	if (fs_fd >= 0)	2760	if (fs_fd >= 0)
1956	infy_add (EV_A_ w); /* re-add, no matter what */	2761	infy_add (EV_A_ w); /* re-add, no matter what */
1957	else	2762	else
1958	ev_timer_start (EV_A_ &w->timer);	2763	ev_timer_again (EV_A_ &w->timer);
1959	}	2764	}
1960
1961	}	2765	}
1962	}	2766	}
1963		2767
		2768	#endif
		2769
		2770	#ifdef _WIN32
		2771	# define EV_LSTAT(p,b) _stati64 (p, b)
		2772	#else
		2773	# define EV_LSTAT(p,b) lstat (p, b)
1964	#endif	2774	#endif
1965		2775
1966	void	2776	void
1967	ev_stat_stat (EV_P_ ev_stat *w)	2777	ev_stat_stat (EV_P_ ev_stat *w)
1968	{	2778	{
…		…
1995	|| w->prev.st_atime != w->attr.st_atime	2805	|| w->prev.st_atime != w->attr.st_atime
1996	|| w->prev.st_mtime != w->attr.st_mtime	2806	|| w->prev.st_mtime != w->attr.st_mtime
1997	|| w->prev.st_ctime != w->attr.st_ctime	2807	|| w->prev.st_ctime != w->attr.st_ctime
1998	) {	2808	) {
1999	#if EV_USE_INOTIFY	2809	#if EV_USE_INOTIFY
		2810	if (fs_fd >= 0)
		2811	{
2000	infy_del (EV_A_ w);	2812	infy_del (EV_A_ w);
2001	infy_add (EV_A_ w);	2813	infy_add (EV_A_ w);
2002	ev_stat_stat (EV_A_ w); /* avoid race... */	2814	ev_stat_stat (EV_A_ w); /* avoid race... */
		2815	}
2003	#endif	2816	#endif
2004		2817
2005	ev_feed_event (EV_A_ w, EV_STAT);	2818	ev_feed_event (EV_A_ w, EV_STAT);
2006	}	2819	}
2007	}	2820	}
…		…
2010	ev_stat_start (EV_P_ ev_stat *w)	2823	ev_stat_start (EV_P_ ev_stat *w)
2011	{	2824	{
2012	if (expect_false (ev_is_active (w)))	2825	if (expect_false (ev_is_active (w)))
2013	return;	2826	return;
2014		2827
2015	/* since we use memcmp, we need to clear any padding data etc. */
2016	memset (&w->prev, 0, sizeof (ev_statdata));
2017	memset (&w->attr, 0, sizeof (ev_statdata));
2018
2019	ev_stat_stat (EV_A_ w);	2828	ev_stat_stat (EV_A_ w);
2020		2829
		2830	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2021	if (w->interval < MIN_STAT_INTERVAL)	2831	w->interval = MIN_STAT_INTERVAL;
2022	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2023		2832
2024	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2833	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2025	ev_set_priority (&w->timer, ev_priority (w));	2834	ev_set_priority (&w->timer, ev_priority (w));
2026		2835
2027	#if EV_USE_INOTIFY	2836	#if EV_USE_INOTIFY
2028	infy_init (EV_A);	2837	infy_init (EV_A);
2029		2838
2030	if (fs_fd >= 0)	2839	if (fs_fd >= 0)
2031	infy_add (EV_A_ w);	2840	infy_add (EV_A_ w);
2032	else	2841	else
2033	#endif	2842	#endif
2034	ev_timer_start (EV_A_ &w->timer);	2843	ev_timer_again (EV_A_ &w->timer);
2035		2844
2036	ev_start (EV_A_ (W)w, 1);	2845	ev_start (EV_A_ (W)w, 1);
		2846
		2847	EV_FREQUENT_CHECK;
2037	}	2848	}
2038		2849
2039	void	2850	void
2040	ev_stat_stop (EV_P_ ev_stat *w)	2851	ev_stat_stop (EV_P_ ev_stat *w)
2041	{	2852	{
2042	clear_pending (EV_A_ (W)w);	2853	clear_pending (EV_A_ (W)w);
2043	if (expect_false (!ev_is_active (w)))	2854	if (expect_false (!ev_is_active (w)))
2044	return;	2855	return;
2045		2856
		2857	EV_FREQUENT_CHECK;
		2858
2046	#if EV_USE_INOTIFY	2859	#if EV_USE_INOTIFY
2047	infy_del (EV_A_ w);	2860	infy_del (EV_A_ w);
2048	#endif	2861	#endif
2049	ev_timer_stop (EV_A_ &w->timer);	2862	ev_timer_stop (EV_A_ &w->timer);
2050		2863
2051	ev_stop (EV_A_ (W)w);	2864	ev_stop (EV_A_ (W)w);
		2865
		2866	EV_FREQUENT_CHECK;
2052	}	2867	}
2053	#endif	2868	#endif
2054		2869
2055	#if EV_IDLE_ENABLE	2870	#if EV_IDLE_ENABLE
2056	void	2871	void
…		…
2058	{	2873	{
2059	if (expect_false (ev_is_active (w)))	2874	if (expect_false (ev_is_active (w)))
2060	return;	2875	return;
2061		2876
2062	pri_adjust (EV_A_ (W)w);	2877	pri_adjust (EV_A_ (W)w);
		2878
		2879	EV_FREQUENT_CHECK;
2063		2880
2064	{	2881	{
2065	int active = ++idlecnt [ABSPRI (w)];	2882	int active = ++idlecnt [ABSPRI (w)];
2066		2883
2067	++idleall;	2884	++idleall;
2068	ev_start (EV_A_ (W)w, active);	2885	ev_start (EV_A_ (W)w, active);
2069		2886
2070	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	2887	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2071	idles [ABSPRI (w)][active - 1] = w;	2888	idles [ABSPRI (w)][active - 1] = w;
2072	}	2889	}
		2890
		2891	EV_FREQUENT_CHECK;
2073	}	2892	}
2074		2893
2075	void	2894	void
2076	ev_idle_stop (EV_P_ ev_idle *w)	2895	ev_idle_stop (EV_P_ ev_idle *w)
2077	{	2896	{
2078	clear_pending (EV_A_ (W)w);	2897	clear_pending (EV_A_ (W)w);
2079	if (expect_false (!ev_is_active (w)))	2898	if (expect_false (!ev_is_active (w)))
2080	return;	2899	return;
2081		2900
		2901	EV_FREQUENT_CHECK;
		2902
2082	{	2903	{
2083	int active = ((W)w)->active;	2904	int active = ev_active (w);
2084		2905
2085	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2906	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2086	((W)idles [ABSPRI (w)][active - 1])->active = active;	2907	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2087		2908
2088	ev_stop (EV_A_ (W)w);	2909	ev_stop (EV_A_ (W)w);
2089	--idleall;	2910	--idleall;
2090	}	2911	}
		2912
		2913	EV_FREQUENT_CHECK;
2091	}	2914	}
2092	#endif	2915	#endif
2093		2916
2094	void	2917	void
2095	ev_prepare_start (EV_P_ ev_prepare *w)	2918	ev_prepare_start (EV_P_ ev_prepare *w)
2096	{	2919	{
2097	if (expect_false (ev_is_active (w)))	2920	if (expect_false (ev_is_active (w)))
2098	return;	2921	return;
		2922
		2923	EV_FREQUENT_CHECK;
2099		2924
2100	ev_start (EV_A_ (W)w, ++preparecnt);	2925	ev_start (EV_A_ (W)w, ++preparecnt);
2101	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	2926	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2102	prepares [preparecnt - 1] = w;	2927	prepares [preparecnt - 1] = w;
		2928
		2929	EV_FREQUENT_CHECK;
2103	}	2930	}
2104		2931
2105	void	2932	void
2106	ev_prepare_stop (EV_P_ ev_prepare *w)	2933	ev_prepare_stop (EV_P_ ev_prepare *w)
2107	{	2934	{
2108	clear_pending (EV_A_ (W)w);	2935	clear_pending (EV_A_ (W)w);
2109	if (expect_false (!ev_is_active (w)))	2936	if (expect_false (!ev_is_active (w)))
2110	return;	2937	return;
2111		2938
		2939	EV_FREQUENT_CHECK;
		2940
2112	{	2941	{
2113	int active = ((W)w)->active;	2942	int active = ev_active (w);
		2943
2114	prepares [active - 1] = prepares [--preparecnt];	2944	prepares [active - 1] = prepares [--preparecnt];
2115	((W)prepares [active - 1])->active = active;	2945	ev_active (prepares [active - 1]) = active;
2116	}	2946	}
2117		2947
2118	ev_stop (EV_A_ (W)w);	2948	ev_stop (EV_A_ (W)w);
		2949
		2950	EV_FREQUENT_CHECK;
2119	}	2951	}
2120		2952
2121	void	2953	void
2122	ev_check_start (EV_P_ ev_check *w)	2954	ev_check_start (EV_P_ ev_check *w)
2123	{	2955	{
2124	if (expect_false (ev_is_active (w)))	2956	if (expect_false (ev_is_active (w)))
2125	return;	2957	return;
		2958
		2959	EV_FREQUENT_CHECK;
2126		2960
2127	ev_start (EV_A_ (W)w, ++checkcnt);	2961	ev_start (EV_A_ (W)w, ++checkcnt);
2128	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	2962	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2129	checks [checkcnt - 1] = w;	2963	checks [checkcnt - 1] = w;
		2964
		2965	EV_FREQUENT_CHECK;
2130	}	2966	}
2131		2967
2132	void	2968	void
2133	ev_check_stop (EV_P_ ev_check *w)	2969	ev_check_stop (EV_P_ ev_check *w)
2134	{	2970	{
2135	clear_pending (EV_A_ (W)w);	2971	clear_pending (EV_A_ (W)w);
2136	if (expect_false (!ev_is_active (w)))	2972	if (expect_false (!ev_is_active (w)))
2137	return;	2973	return;
2138		2974
		2975	EV_FREQUENT_CHECK;
		2976
2139	{	2977	{
2140	int active = ((W)w)->active;	2978	int active = ev_active (w);
		2979
2141	checks [active - 1] = checks [--checkcnt];	2980	checks [active - 1] = checks [--checkcnt];
2142	((W)checks [active - 1])->active = active;	2981	ev_active (checks [active - 1]) = active;
2143	}	2982	}
2144		2983
2145	ev_stop (EV_A_ (W)w);	2984	ev_stop (EV_A_ (W)w);
		2985
		2986	EV_FREQUENT_CHECK;
2146	}	2987	}
2147		2988
2148	#if EV_EMBED_ENABLE	2989	#if EV_EMBED_ENABLE
2149	void noinline	2990	void noinline
2150	ev_embed_sweep (EV_P_ ev_embed *w)	2991	ev_embed_sweep (EV_P_ ev_embed *w)
2151	{	2992	{
2152	ev_loop (w->loop, EVLOOP_NONBLOCK);	2993	ev_loop (w->other, EVLOOP_NONBLOCK);
2153	}	2994	}
2154		2995
2155	static void	2996	static void
2156	embed_cb (EV_P_ ev_io *io, int revents)	2997	embed_io_cb (EV_P_ ev_io *io, int revents)
2157	{	2998	{
2158	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	2999	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2159		3000
2160	if (ev_cb (w))	3001	if (ev_cb (w))
2161	ev_feed_event (EV_A_ (W)w, EV_EMBED);	3002	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2162	else	3003	else
2163	ev_embed_sweep (loop, w);	3004	ev_loop (w->other, EVLOOP_NONBLOCK);
2164	}	3005	}
		3006
		3007	static void
		3008	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		3009	{
		3010	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		3011
		3012	{
		3013	struct ev_loop *loop = w->other;
		3014
		3015	while (fdchangecnt)
		3016	{
		3017	fd_reify (EV_A);
		3018	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3019	}
		3020	}
		3021	}
		3022
		3023	static void
		3024	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3025	{
		3026	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3027
		3028	ev_embed_stop (EV_A_ w);
		3029
		3030	{
		3031	struct ev_loop *loop = w->other;
		3032
		3033	ev_loop_fork (EV_A);
		3034	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3035	}
		3036
		3037	ev_embed_start (EV_A_ w);
		3038	}
		3039
		3040	#if 0
		3041	static void
		3042	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		3043	{
		3044	ev_idle_stop (EV_A_ idle);
		3045	}
		3046	#endif
2165		3047
2166	void	3048	void
2167	ev_embed_start (EV_P_ ev_embed *w)	3049	ev_embed_start (EV_P_ ev_embed *w)
2168	{	3050	{
2169	if (expect_false (ev_is_active (w)))	3051	if (expect_false (ev_is_active (w)))
2170	return;	3052	return;
2171		3053
2172	{	3054	{
2173	struct ev_loop *loop = w->loop;	3055	struct ev_loop *loop = w->other;
2174	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3056	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2175	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	3057	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2176	}	3058	}
		3059
		3060	EV_FREQUENT_CHECK;
2177		3061
2178	ev_set_priority (&w->io, ev_priority (w));	3062	ev_set_priority (&w->io, ev_priority (w));
2179	ev_io_start (EV_A_ &w->io);	3063	ev_io_start (EV_A_ &w->io);
2180		3064
		3065	ev_prepare_init (&w->prepare, embed_prepare_cb);
		3066	ev_set_priority (&w->prepare, EV_MINPRI);
		3067	ev_prepare_start (EV_A_ &w->prepare);
		3068
		3069	ev_fork_init (&w->fork, embed_fork_cb);
		3070	ev_fork_start (EV_A_ &w->fork);
		3071
		3072	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		3073
2181	ev_start (EV_A_ (W)w, 1);	3074	ev_start (EV_A_ (W)w, 1);
		3075
		3076	EV_FREQUENT_CHECK;
2182	}	3077	}
2183		3078
2184	void	3079	void
2185	ev_embed_stop (EV_P_ ev_embed *w)	3080	ev_embed_stop (EV_P_ ev_embed *w)
2186	{	3081	{
2187	clear_pending (EV_A_ (W)w);	3082	clear_pending (EV_A_ (W)w);
2188	if (expect_false (!ev_is_active (w)))	3083	if (expect_false (!ev_is_active (w)))
2189	return;	3084	return;
2190		3085
		3086	EV_FREQUENT_CHECK;
		3087
2191	ev_io_stop (EV_A_ &w->io);	3088	ev_io_stop (EV_A_ &w->io);
		3089	ev_prepare_stop (EV_A_ &w->prepare);
		3090	ev_fork_stop (EV_A_ &w->fork);
2192		3091
2193	ev_stop (EV_A_ (W)w);	3092	EV_FREQUENT_CHECK;
2194	}	3093	}
2195	#endif	3094	#endif
2196		3095
2197	#if EV_FORK_ENABLE	3096	#if EV_FORK_ENABLE
2198	void	3097	void
2199	ev_fork_start (EV_P_ ev_fork *w)	3098	ev_fork_start (EV_P_ ev_fork *w)
2200	{	3099	{
2201	if (expect_false (ev_is_active (w)))	3100	if (expect_false (ev_is_active (w)))
2202	return;	3101	return;
		3102
		3103	EV_FREQUENT_CHECK;
2203		3104
2204	ev_start (EV_A_ (W)w, ++forkcnt);	3105	ev_start (EV_A_ (W)w, ++forkcnt);
2205	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3106	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2206	forks [forkcnt - 1] = w;	3107	forks [forkcnt - 1] = w;
		3108
		3109	EV_FREQUENT_CHECK;
2207	}	3110	}
2208		3111
2209	void	3112	void
2210	ev_fork_stop (EV_P_ ev_fork *w)	3113	ev_fork_stop (EV_P_ ev_fork *w)
2211	{	3114	{
2212	clear_pending (EV_A_ (W)w);	3115	clear_pending (EV_A_ (W)w);
2213	if (expect_false (!ev_is_active (w)))	3116	if (expect_false (!ev_is_active (w)))
2214	return;	3117	return;
2215		3118
		3119	EV_FREQUENT_CHECK;
		3120
2216	{	3121	{
2217	int active = ((W)w)->active;	3122	int active = ev_active (w);
		3123
2218	forks [active - 1] = forks [--forkcnt];	3124	forks [active - 1] = forks [--forkcnt];
2219	((W)forks [active - 1])->active = active;	3125	ev_active (forks [active - 1]) = active;
2220	}	3126	}
2221		3127
2222	ev_stop (EV_A_ (W)w);	3128	ev_stop (EV_A_ (W)w);
		3129
		3130	EV_FREQUENT_CHECK;
		3131	}
		3132	#endif
		3133
		3134	#if EV_ASYNC_ENABLE
		3135	void
		3136	ev_async_start (EV_P_ ev_async *w)
		3137	{
		3138	if (expect_false (ev_is_active (w)))
		3139	return;
		3140
		3141	evpipe_init (EV_A);
		3142
		3143	EV_FREQUENT_CHECK;
		3144
		3145	ev_start (EV_A_ (W)w, ++asynccnt);
		3146	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		3147	asyncs [asynccnt - 1] = w;
		3148
		3149	EV_FREQUENT_CHECK;
		3150	}
		3151
		3152	void
		3153	ev_async_stop (EV_P_ ev_async *w)
		3154	{
		3155	clear_pending (EV_A_ (W)w);
		3156	if (expect_false (!ev_is_active (w)))
		3157	return;
		3158
		3159	EV_FREQUENT_CHECK;
		3160
		3161	{
		3162	int active = ev_active (w);
		3163
		3164	asyncs [active - 1] = asyncs [--asynccnt];
		3165	ev_active (asyncs [active - 1]) = active;
		3166	}
		3167
		3168	ev_stop (EV_A_ (W)w);
		3169
		3170	EV_FREQUENT_CHECK;
		3171	}
		3172
		3173	void
		3174	ev_async_send (EV_P_ ev_async *w)
		3175	{
		3176	w->sent = 1;
		3177	evpipe_write (EV_A_ &gotasync);
2223	}	3178	}
2224	#endif	3179	#endif
2225		3180
2226	/*****************************************************************************/	3181	/*****************************************************************************/
2227		3182
…		…
2237	once_cb (EV_P_ struct ev_once *once, int revents)	3192	once_cb (EV_P_ struct ev_once *once, int revents)
2238	{	3193	{
2239	void (*cb)(int revents, void *arg) = once->cb;	3194	void (*cb)(int revents, void *arg) = once->cb;
2240	void *arg = once->arg;	3195	void *arg = once->arg;
2241		3196
2242	ev_io_stop (EV_A_ &once->io);	3197	ev_io_stop (EV_A_ &once->io);
2243	ev_timer_stop (EV_A_ &once->to);	3198	ev_timer_stop (EV_A_ &once->to);
2244	ev_free (once);	3199	ev_free (once);
2245		3200
2246	cb (revents, arg);	3201	cb (revents, arg);
2247	}	3202	}
2248		3203
2249	static void	3204	static void
2250	once_cb_io (EV_P_ ev_io *w, int revents)	3205	once_cb_io (EV_P_ ev_io *w, int revents)
2251	{	3206	{
2252	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3207	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3208
		3209	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2253	}	3210	}
2254		3211
2255	static void	3212	static void
2256	once_cb_to (EV_P_ ev_timer *w, int revents)	3213	once_cb_to (EV_P_ ev_timer *w, int revents)
2257	{	3214	{
2258	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3215	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3216
		3217	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2259	}	3218	}
2260		3219
2261	void	3220	void
2262	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3221	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2263	{	3222	{
…		…
2285	ev_timer_set (&once->to, timeout, 0.);	3244	ev_timer_set (&once->to, timeout, 0.);
2286	ev_timer_start (EV_A_ &once->to);	3245	ev_timer_start (EV_A_ &once->to);
2287	}	3246	}
2288	}	3247	}
2289		3248
		3249	/*****************************************************************************/
		3250
		3251	#if EV_WALK_ENABLE
		3252	void
		3253	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3254	{
		3255	int i, j;
		3256	ev_watcher_list *wl, *wn;
		3257
		3258	if (types & (EV_IO | EV_EMBED))
		3259	for (i = 0; i < anfdmax; ++i)
		3260	for (wl = anfds [i].head; wl; )
		3261	{
		3262	wn = wl->next;
		3263
		3264	#if EV_EMBED_ENABLE
		3265	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3266	{
		3267	if (types & EV_EMBED)
		3268	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3269	}
		3270	else
		3271	#endif
		3272	#if EV_USE_INOTIFY
		3273	if (ev_cb ((ev_io *)wl) == infy_cb)
		3274	;
		3275	else
		3276	#endif
		3277	if ((ev_io *)wl != &pipe_w)
		3278	if (types & EV_IO)
		3279	cb (EV_A_ EV_IO, wl);
		3280
		3281	wl = wn;
		3282	}
		3283
		3284	if (types & (EV_TIMER | EV_STAT))
		3285	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3286	#if EV_STAT_ENABLE
		3287	/*TODO: timer is not always active*/
		3288	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3289	{
		3290	if (types & EV_STAT)
		3291	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3292	}
		3293	else
		3294	#endif
		3295	if (types & EV_TIMER)
		3296	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3297
		3298	#if EV_PERIODIC_ENABLE
		3299	if (types & EV_PERIODIC)
		3300	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3301	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3302	#endif
		3303
		3304	#if EV_IDLE_ENABLE
		3305	if (types & EV_IDLE)
		3306	for (j = NUMPRI; i--; )
		3307	for (i = idlecnt [j]; i--; )
		3308	cb (EV_A_ EV_IDLE, idles [j][i]);
		3309	#endif
		3310
		3311	#if EV_FORK_ENABLE
		3312	if (types & EV_FORK)
		3313	for (i = forkcnt; i--; )
		3314	if (ev_cb (forks [i]) != embed_fork_cb)
		3315	cb (EV_A_ EV_FORK, forks [i]);
		3316	#endif
		3317
		3318	#if EV_ASYNC_ENABLE
		3319	if (types & EV_ASYNC)
		3320	for (i = asynccnt; i--; )
		3321	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3322	#endif
		3323
		3324	if (types & EV_PREPARE)
		3325	for (i = preparecnt; i--; )
		3326	#if EV_EMBED_ENABLE
		3327	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3328	#endif
		3329	cb (EV_A_ EV_PREPARE, prepares [i]);
		3330
		3331	if (types & EV_CHECK)
		3332	for (i = checkcnt; i--; )
		3333	cb (EV_A_ EV_CHECK, checks [i]);
		3334
		3335	if (types & EV_SIGNAL)
		3336	for (i = 0; i < signalmax; ++i)
		3337	for (wl = signals [i].head; wl; )
		3338	{
		3339	wn = wl->next;
		3340	cb (EV_A_ EV_SIGNAL, wl);
		3341	wl = wn;
		3342	}
		3343
		3344	if (types & EV_CHILD)
		3345	for (i = EV_PID_HASHSIZE; i--; )
		3346	for (wl = childs [i]; wl; )
		3347	{
		3348	wn = wl->next;
		3349	cb (EV_A_ EV_CHILD, wl);
		3350	wl = wn;
		3351	}
		3352	/* EV_STAT 0x00001000 /* stat data changed */
		3353	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3354	}
		3355	#endif
		3356
		3357	#if EV_MULTIPLICITY
		3358	#include "ev_wrap.h"
		3359	#endif
		3360
2290	#ifdef __cplusplus	3361	#ifdef __cplusplus
2291	}	3362	}
2292	#endif	3363	#endif
2293		3364

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