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Comparing libev/ev.c (file contents):
Revision 1.185 by root, Fri Dec 14 18:22:30 2007 UTC vs.
Revision 1.294 by root, Wed Jul 8 02:46:05 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
…		…
207	#if !EV_STAT_ENABLE	315	#if !EV_STAT_ENABLE
208	# undef EV_USE_INOTIFY	316	# undef EV_USE_INOTIFY
209	# define EV_USE_INOTIFY 0	317	# define EV_USE_INOTIFY 0
210	#endif	318	#endif
211		319
		320	#if !EV_USE_NANOSLEEP
		321	# ifndef _WIN32
		322	# include <sys/select.h>
		323	# endif
		324	#endif
		325
212	#if EV_USE_INOTIFY	326	#if EV_USE_INOTIFY
		327	# include <sys/utsname.h>
		328	# include <sys/statfs.h>
213	# include <sys/inotify.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
214	#endif	335	#endif
215		336
216	#if EV_SELECT_IS_WINSOCKET	337	#if EV_SELECT_IS_WINSOCKET
217	# include <winsock.h>	338	# include <winsock.h>
218	#endif	339	#endif
219		340
		341	#if EV_USE_EVENTFD
		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" {
		346	# endif
		347	int eventfd (unsigned int initval, int flags);
		348	# ifdef __cplusplus
		349	}
		350	# endif
		351	#endif
		352
220	/**/	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
221		360
222	/*	361	/*
223	* This is used to avoid floating point rounding problems.	362	* This is used to avoid floating point rounding problems.
224	* It is added to ev_rt_now when scheduling periodics	363	* It is added to ev_rt_now when scheduling periodics
225	* to ensure progress, time-wise, even when rounding	364	* to ensure progress, time-wise, even when rounding
…		…
237	# define expect(expr,value) __builtin_expect ((expr),(value))	376	# define expect(expr,value) __builtin_expect ((expr),(value))
238	# define noinline __attribute__ ((noinline))	377	# define noinline __attribute__ ((noinline))
239	#else	378	#else
240	# define expect(expr,value) (expr)	379	# define expect(expr,value) (expr)
241	# define noinline	380	# define noinline
242	# if __STDC_VERSION__ < 199901L	381	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
243	# define inline	382	# define inline
244	# endif	383	# endif
245	#endif	384	#endif
246		385
247	#define expect_false(expr) expect ((expr) != 0, 0)	386	#define expect_false(expr) expect ((expr) != 0, 0)
…		…
262		401
263	typedef ev_watcher *W;	402	typedef ev_watcher *W;
264	typedef ev_watcher_list *WL;	403	typedef ev_watcher_list *WL;
265	typedef ev_watcher_time *WT;	404	typedef ev_watcher_time *WT;
266		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
267	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
268		418
269	#ifdef _WIN32	419	#ifdef _WIN32
270	# include "ev_win32.c"	420	# include "ev_win32.c"
271	#endif	421	#endif
272		422
…		…
279	{	429	{
280	syserr_cb = cb;	430	syserr_cb = cb;
281	}	431	}
282		432
283	static void noinline	433	static void noinline
284	syserr (const char *msg)	434	ev_syserr (const char *msg)
285	{	435	{
286	if (!msg)	436	if (!msg)
287	msg = "(libev) system error";	437	msg = "(libev) system error";
288		438
289	if (syserr_cb)	439	if (syserr_cb)
…		…
293	perror (msg);	443	perror (msg);
294	abort ();	444	abort ();
295	}	445	}
296	}	446	}
297		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
298	static void *(*alloc)(void *ptr, long size);	463	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
299		464
300	void	465	void
301	ev_set_allocator (void *(*cb)(void *ptr, long size))	466	ev_set_allocator (void *(*cb)(void *ptr, long size))
302	{	467	{
303	alloc = cb;	468	alloc = cb;
304	}	469	}
305		470
306	inline_speed void *	471	inline_speed void *
307	ev_realloc (void *ptr, long size)	472	ev_realloc (void *ptr, long size)
308	{	473	{
309	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	474	ptr = alloc (ptr, size);
310		475
311	if (!ptr && size)	476	if (!ptr && size)
312	{	477	{
313	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	478	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
314	abort ();	479	abort ();
…		…
320	#define ev_malloc(size) ev_realloc (0, (size))	485	#define ev_malloc(size) ev_realloc (0, (size))
321	#define ev_free(ptr) ev_realloc ((ptr), 0)	486	#define ev_free(ptr) ev_realloc ((ptr), 0)
322		487
323	/*****************************************************************************/	488	/*****************************************************************************/
324		489
		490	/* file descriptor info structure */
325	typedef struct	491	typedef struct
326	{	492	{
327	WL head;	493	WL head;
328	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 */
329	unsigned char reify;	497	unsigned char unused;
		498	#if EV_USE_EPOLL
		499	unsigned int egen; /* generation counter to counter epoll bugs */
		500	#endif
330	#if EV_SELECT_IS_WINSOCKET	501	#if EV_SELECT_IS_WINSOCKET
331	SOCKET handle;	502	SOCKET handle;
332	#endif	503	#endif
333	} ANFD;	504	} ANFD;
334		505
		506	/* stores the pending event set for a given watcher */
335	typedef struct	507	typedef struct
336	{	508	{
337	W w;	509	W w;
338	int events;	510	int events; /* the pending event set for the given watcher */
339	} ANPENDING;	511	} ANPENDING;
340		512
341	#if EV_USE_INOTIFY	513	#if EV_USE_INOTIFY
		514	/* hash table entry per inotify-id */
342	typedef struct	515	typedef struct
343	{	516	{
344	WL head;	517	WL head;
345	} 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)
346	#endif	539	#endif
347		540
348	#if EV_MULTIPLICITY	541	#if EV_MULTIPLICITY
349		542
350	struct ev_loop	543	struct ev_loop
…		…
371		564
372	#endif	565	#endif
373		566
374	/*****************************************************************************/	567	/*****************************************************************************/
375		568
		569	#ifndef EV_HAVE_EV_TIME
376	ev_tstamp	570	ev_tstamp
377	ev_time (void)	571	ev_time (void)
378	{	572	{
379	#if EV_USE_REALTIME	573	#if EV_USE_REALTIME
		574	if (expect_true (have_realtime))
		575	{
380	struct timespec ts;	576	struct timespec ts;
381	clock_gettime (CLOCK_REALTIME, &ts);	577	clock_gettime (CLOCK_REALTIME, &ts);
382	return ts.tv_sec + ts.tv_nsec * 1e-9;	578	return ts.tv_sec + ts.tv_nsec * 1e-9;
383	#else	579	}
		580	#endif
		581
384	struct timeval tv;	582	struct timeval tv;
385	gettimeofday (&tv, 0);	583	gettimeofday (&tv, 0);
386	return tv.tv_sec + tv.tv_usec * 1e-6;	584	return tv.tv_sec + tv.tv_usec * 1e-6;
387	#endif
388	}	585	}
		586	#endif
389		587
390	ev_tstamp inline_size	588	inline_size ev_tstamp
391	get_clock (void)	589	get_clock (void)
392	{	590	{
393	#if EV_USE_MONOTONIC	591	#if EV_USE_MONOTONIC
394	if (expect_true (have_monotonic))	592	if (expect_true (have_monotonic))
395	{	593	{
…		…
408	{	606	{
409	return ev_rt_now;	607	return ev_rt_now;
410	}	608	}
411	#endif	609	#endif
412		610
413	int inline_size	611	void
		612	ev_sleep (ev_tstamp delay)
		613	{
		614	if (delay > 0.)
		615	{
		616	#if EV_USE_NANOSLEEP
		617	struct timespec ts;
		618
		619	ts.tv_sec = (time_t)delay;
		620	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		621
		622	nanosleep (&ts, 0);
		623	#elif defined(_WIN32)
		624	Sleep ((unsigned long)(delay * 1e3));
		625	#else
		626	struct timeval tv;
		627
		628	tv.tv_sec = (time_t)delay;
		629	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		630
		631	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		632	/* somehting not guaranteed by newer posix versions, but guaranteed */
		633	/* by older ones */
		634	select (0, 0, 0, 0, &tv);
		635	#endif
		636	}
		637	}
		638
		639	/*****************************************************************************/
		640
		641	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		642
		643	/* find a suitable new size for the given array, */
		644	/* hopefully by rounding to a ncie-to-malloc size */
		645	inline_size int
414	array_nextsize (int elem, int cur, int cnt)	646	array_nextsize (int elem, int cur, int cnt)
415	{	647	{
416	int ncur = cur + 1;	648	int ncur = cur + 1;
417		649
418	do	650	do
419	ncur <<= 1;	651	ncur <<= 1;
420	while (cnt > ncur);	652	while (cnt > ncur);
421		653
422	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	654	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
423	if (elem * ncur > 4096)	655	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
424	{	656	{
425	ncur *= elem;	657	ncur *= elem;
426	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	658	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
427	ncur = ncur - sizeof (void *) * 4;	659	ncur = ncur - sizeof (void *) * 4;
428	ncur /= elem;	660	ncur /= elem;
429	}	661	}
430		662
431	return ncur;	663	return ncur;
…		…
435	array_realloc (int elem, void *base, int *cur, int cnt)	667	array_realloc (int elem, void *base, int *cur, int cnt)
436	{	668	{
437	*cur = array_nextsize (elem, *cur, cnt);	669	*cur = array_nextsize (elem, *cur, cnt);
438	return ev_realloc (base, elem * *cur);	670	return ev_realloc (base, elem * *cur);
439	}	671	}
		672
		673	#define array_init_zero(base,count) \
		674	memset ((void *)(base), 0, sizeof (*(base)) * (count))
440		675
441	#define array_needsize(type,base,cur,cnt,init) \	676	#define array_needsize(type,base,cur,cnt,init) \
442	if (expect_false ((cnt) > (cur))) \	677	if (expect_false ((cnt) > (cur))) \
443	{ \	678	{ \
444	int ocur_ = (cur); \	679	int ocur_ = (cur); \
…		…
456	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	691	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
457	}	692	}
458	#endif	693	#endif
459		694
460	#define array_free(stem, idx) \	695	#define array_free(stem, idx) \
461	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	696	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
462		697
463	/*****************************************************************************/	698	/*****************************************************************************/
		699
		700	/* dummy callback for pending events */
		701	static void noinline
		702	pendingcb (EV_P_ ev_prepare *w, int revents)
		703	{
		704	}
464		705
465	void noinline	706	void noinline
466	ev_feed_event (EV_P_ void *w, int revents)	707	ev_feed_event (EV_P_ void *w, int revents)
467	{	708	{
468	W w_ = (W)w;	709	W w_ = (W)w;
…		…
477	pendings [pri][w_->pending - 1].w = w_;	718	pendings [pri][w_->pending - 1].w = w_;
478	pendings [pri][w_->pending - 1].events = revents;	719	pendings [pri][w_->pending - 1].events = revents;
479	}	720	}
480	}	721	}
481		722
482	void inline_speed	723	inline_speed void
		724	feed_reverse (EV_P_ W w)
		725	{
		726	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		727	rfeeds [rfeedcnt++] = w;
		728	}
		729
		730	inline_size void
		731	feed_reverse_done (EV_P_ int revents)
		732	{
		733	do
		734	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		735	while (rfeedcnt);
		736	}
		737
		738	inline_speed void
483	queue_events (EV_P_ W *events, int eventcnt, int type)	739	queue_events (EV_P_ W *events, int eventcnt, int type)
484	{	740	{
485	int i;	741	int i;
486		742
487	for (i = 0; i < eventcnt; ++i)	743	for (i = 0; i < eventcnt; ++i)
488	ev_feed_event (EV_A_ events [i], type);	744	ev_feed_event (EV_A_ events [i], type);
489	}	745	}
490		746
491	/*****************************************************************************/	747	/*****************************************************************************/
492		748
493	void inline_size	749	inline_speed void
494	anfds_init (ANFD *base, int count)
495	{
496	while (count--)
497	{
498	base->head = 0;
499	base->events = EV_NONE;
500	base->reify = 0;
501
502	++base;
503	}
504	}
505
506	void inline_speed
507	fd_event (EV_P_ int fd, int revents)	750	fd_event (EV_P_ int fd, int revents)
508	{	751	{
509	ANFD *anfd = anfds + fd;	752	ANFD *anfd = anfds + fd;
510	ev_io *w;	753	ev_io *w;
511		754
…		…
523	{	766	{
524	if (fd >= 0 && fd < anfdmax)	767	if (fd >= 0 && fd < anfdmax)
525	fd_event (EV_A_ fd, revents);	768	fd_event (EV_A_ fd, revents);
526	}	769	}
527		770
528	void inline_size	771	/* make sure the external fd watch events are in-sync */
		772	/* with the kernel/libev internal state */
		773	inline_size void
529	fd_reify (EV_P)	774	fd_reify (EV_P)
530	{	775	{
531	int i;	776	int i;
532		777
533	for (i = 0; i < fdchangecnt; ++i)	778	for (i = 0; i < fdchangecnt; ++i)
…		…
542	events |= (unsigned char)w->events;	787	events |= (unsigned char)w->events;
543		788
544	#if EV_SELECT_IS_WINSOCKET	789	#if EV_SELECT_IS_WINSOCKET
545	if (events)	790	if (events)
546	{	791	{
547	unsigned long argp;	792	unsigned long arg;
		793	#ifdef EV_FD_TO_WIN32_HANDLE
		794	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		795	#else
548	anfd->handle = _get_osfhandle (fd);	796	anfd->handle = _get_osfhandle (fd);
		797	#endif
549	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	798	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
550	}	799	}
551	#endif	800	#endif
552		801
553	{	802	{
554	unsigned char o_events = anfd->events;	803	unsigned char o_events = anfd->events;
555	unsigned char o_reify = anfd->reify;	804	unsigned char o_reify = anfd->reify;
556		805
557	anfd->reify = 0;	806	anfd->reify = 0;
558	anfd->events = events;	807	anfd->events = events;
559		808
560	if (o_events != events || o_reify & EV_IOFDSET)	809	if (o_events != events || o_reify & EV__IOFDSET)
561	backend_modify (EV_A_ fd, o_events, events);	810	backend_modify (EV_A_ fd, o_events, events);
562	}	811	}
563	}	812	}
564		813
565	fdchangecnt = 0;	814	fdchangecnt = 0;
566	}	815	}
567		816
568	void inline_size	817	/* something about the given fd changed */
		818	inline_size void
569	fd_change (EV_P_ int fd, int flags)	819	fd_change (EV_P_ int fd, int flags)
570	{	820	{
571	unsigned char reify = anfds [fd].reify;	821	unsigned char reify = anfds [fd].reify;
572	anfds [fd].reify |= flags;	822	anfds [fd].reify |= flags;
573		823
…		…
577	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	827	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
578	fdchanges [fdchangecnt - 1] = fd;	828	fdchanges [fdchangecnt - 1] = fd;
579	}	829	}
580	}	830	}
581		831
582	void inline_speed	832	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		833	inline_speed void
583	fd_kill (EV_P_ int fd)	834	fd_kill (EV_P_ int fd)
584	{	835	{
585	ev_io *w;	836	ev_io *w;
586		837
587	while ((w = (ev_io *)anfds [fd].head))	838	while ((w = (ev_io *)anfds [fd].head))
…		…
589	ev_io_stop (EV_A_ w);	840	ev_io_stop (EV_A_ w);
590	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	841	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
591	}	842	}
592	}	843	}
593		844
594	int inline_size	845	/* check whether the given fd is atcually valid, for error recovery */
		846	inline_size int
595	fd_valid (int fd)	847	fd_valid (int fd)
596	{	848	{
597	#ifdef _WIN32	849	#ifdef _WIN32
598	return _get_osfhandle (fd) != -1;	850	return _get_osfhandle (fd) != -1;
599	#else	851	#else
…		…
607	{	859	{
608	int fd;	860	int fd;
609		861
610	for (fd = 0; fd < anfdmax; ++fd)	862	for (fd = 0; fd < anfdmax; ++fd)
611	if (anfds [fd].events)	863	if (anfds [fd].events)
612	if (!fd_valid (fd) == -1 && errno == EBADF)	864	if (!fd_valid (fd) && errno == EBADF)
613	fd_kill (EV_A_ fd);	865	fd_kill (EV_A_ fd);
614	}	866	}
615		867
616	/* called on ENOMEM in select/poll to kill some fds and retry */	868	/* called on ENOMEM in select/poll to kill some fds and retry */
617	static void noinline	869	static void noinline
…		…
635		887
636	for (fd = 0; fd < anfdmax; ++fd)	888	for (fd = 0; fd < anfdmax; ++fd)
637	if (anfds [fd].events)	889	if (anfds [fd].events)
638	{	890	{
639	anfds [fd].events = 0;	891	anfds [fd].events = 0;
		892	anfds [fd].emask = 0;
640	fd_change (EV_A_ fd, EV_IOFDSET | 1);	893	fd_change (EV_A_ fd, EV__IOFDSET | 1);
641	}	894	}
642	}	895	}
643		896
644	/*****************************************************************************/	897	/*****************************************************************************/
645		898
646	void inline_speed	899	/*
647	upheap (WT *heap, int k)	900	* the heap functions want a real array index. array index 0 uis guaranteed to not
648	{	901	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
649	WT w = heap [k];	902	* the branching factor of the d-tree.
		903	*/
650		904
651	while (k)	905	/*
652	{	906	* at the moment we allow libev the luxury of two heaps,
653	int p = (k - 1) >> 1;	907	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		908	* which is more cache-efficient.
		909	* the difference is about 5% with 50000+ watchers.
		910	*/
		911	#if EV_USE_4HEAP
654		912
655	if (heap [p]->at <= w->at)	913	#define DHEAP 4
		914	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		915	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		916	#define UPHEAP_DONE(p,k) ((p) == (k))
		917
		918	/* away from the root */
		919	inline_speed void
		920	downheap (ANHE *heap, int N, int k)
		921	{
		922	ANHE he = heap [k];
		923	ANHE *E = heap + N + HEAP0;
		924
		925	for (;;)
		926	{
		927	ev_tstamp minat;
		928	ANHE *minpos;
		929	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
		930
		931	/* find minimum child */
		932	if (expect_true (pos + DHEAP - 1 < E))
		933	{
		934	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		935	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		936	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		937	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		938	}
		939	else if (pos < E)
		940	{
		941	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		942	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		943	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		944	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		945	}
		946	else
656	break;	947	break;
657		948
		949	if (ANHE_at (he) <= minat)
		950	break;
		951
		952	heap [k] = *minpos;
		953	ev_active (ANHE_w (*minpos)) = k;
		954
		955	k = minpos - heap;
		956	}
		957
		958	heap [k] = he;
		959	ev_active (ANHE_w (he)) = k;
		960	}
		961
		962	#else /* 4HEAP */
		963
		964	#define HEAP0 1
		965	#define HPARENT(k) ((k) >> 1)
		966	#define UPHEAP_DONE(p,k) (!(p))
		967
		968	/* away from the root */
		969	inline_speed void
		970	downheap (ANHE *heap, int N, int k)
		971	{
		972	ANHE he = heap [k];
		973
		974	for (;;)
		975	{
		976	int c = k << 1;
		977
		978	if (c > N + HEAP0 - 1)
		979	break;
		980
		981	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		982	? 1 : 0;
		983
		984	if (ANHE_at (he) <= ANHE_at (heap [c]))
		985	break;
		986
		987	heap [k] = heap [c];
		988	ev_active (ANHE_w (heap [k])) = k;
		989
		990	k = c;
		991	}
		992
		993	heap [k] = he;
		994	ev_active (ANHE_w (he)) = k;
		995	}
		996	#endif
		997
		998	/* towards the root */
		999	inline_speed void
		1000	upheap (ANHE *heap, int k)
		1001	{
		1002	ANHE he = heap [k];
		1003
		1004	for (;;)
		1005	{
		1006	int p = HPARENT (k);
		1007
		1008	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1009	break;
		1010
658	heap [k] = heap [p];	1011	heap [k] = heap [p];
659	((W)heap [k])->active = k + 1;	1012	ev_active (ANHE_w (heap [k])) = k;
660	k = p;	1013	k = p;
661	}	1014	}
662		1015
663	heap [k] = w;	1016	heap [k] = he;
664	((W)heap [k])->active = k + 1;	1017	ev_active (ANHE_w (he)) = k;
665	}	1018	}
666		1019
667	void inline_speed	1020	/* move an element suitably so it is in a correct place */
668	downheap (WT *heap, int N, int k)	1021	inline_size void
669	{
670	WT w = heap [k];
671
672	for (;;)
673	{
674	int c = (k << 1) + 1;
675
676	if (c >= N)
677	break;
678
679	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
680	? 1 : 0;
681
682	if (w->at <= heap [c]->at)
683	break;
684
685	heap [k] = heap [c];
686	((W)heap [k])->active = k + 1;
687
688	k = c;
689	}
690
691	heap [k] = w;
692	((W)heap [k])->active = k + 1;
693	}
694
695	void inline_size
696	adjustheap (WT *heap, int N, int k)	1022	adjustheap (ANHE *heap, int N, int k)
697	{	1023	{
		1024	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
698	upheap (heap, k);	1025	upheap (heap, k);
		1026	else
699	downheap (heap, N, k);	1027	downheap (heap, N, k);
		1028	}
		1029
		1030	/* rebuild the heap: this function is used only once and executed rarely */
		1031	inline_size void
		1032	reheap (ANHE *heap, int N)
		1033	{
		1034	int i;
		1035
		1036	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1037	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1038	for (i = 0; i < N; ++i)
		1039	upheap (heap, i + HEAP0);
700	}	1040	}
701		1041
702	/*****************************************************************************/	1042	/*****************************************************************************/
703		1043
		1044	/* associate signal watchers to a signal signal */
704	typedef struct	1045	typedef struct
705	{	1046	{
706	WL head;	1047	WL head;
707	sig_atomic_t volatile gotsig;	1048	EV_ATOMIC_T gotsig;
708	} ANSIG;	1049	} ANSIG;
709		1050
710	static ANSIG *signals;	1051	static ANSIG *signals;
711	static int signalmax;	1052	static int signalmax;
712		1053
713	static int sigpipe [2];	1054	static EV_ATOMIC_T gotsig;
714	static sig_atomic_t volatile gotsig;
715	static ev_io sigev;
716		1055
717	void inline_size	1056	/*****************************************************************************/
718	signals_init (ANSIG *base, int count)
719	{
720	while (count--)
721	{
722	base->head = 0;
723	base->gotsig = 0;
724		1057
725	++base;	1058	/* used to prepare libev internal fd's */
726	}	1059	/* this is not fork-safe */
727	}	1060	inline_speed void
728
729	static void
730	sighandler (int signum)
731	{
732	#if _WIN32
733	signal (signum, sighandler);
734	#endif
735
736	signals [signum - 1].gotsig = 1;
737
738	if (!gotsig)
739	{
740	int old_errno = errno;
741	gotsig = 1;
742	write (sigpipe [1], &signum, 1);
743	errno = old_errno;
744	}
745	}
746
747	void noinline
748	ev_feed_signal_event (EV_P_ int signum)
749	{
750	WL w;
751
752	#if EV_MULTIPLICITY
753	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
754	#endif
755
756	--signum;
757
758	if (signum < 0 || signum >= signalmax)
759	return;
760
761	signals [signum].gotsig = 0;
762
763	for (w = signals [signum].head; w; w = w->next)
764	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
765	}
766
767	static void
768	sigcb (EV_P_ ev_io *iow, int revents)
769	{
770	int signum;
771
772	read (sigpipe [0], &revents, 1);
773	gotsig = 0;
774
775	for (signum = signalmax; signum--; )
776	if (signals [signum].gotsig)
777	ev_feed_signal_event (EV_A_ signum + 1);
778	}
779
780	void inline_speed
781	fd_intern (int fd)	1061	fd_intern (int fd)
782	{	1062	{
783	#ifdef _WIN32	1063	#ifdef _WIN32
784	int arg = 1;	1064	unsigned long arg = 1;
785	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1065	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
786	#else	1066	#else
787	fcntl (fd, F_SETFD, FD_CLOEXEC);	1067	fcntl (fd, F_SETFD, FD_CLOEXEC);
788	fcntl (fd, F_SETFL, O_NONBLOCK);	1068	fcntl (fd, F_SETFL, O_NONBLOCK);
789	#endif	1069	#endif
790	}	1070	}
791		1071
792	static void noinline	1072	static void noinline
793	siginit (EV_P)	1073	evpipe_init (EV_P)
794	{	1074	{
		1075	if (!ev_is_active (&pipe_w))
		1076	{
		1077	#if EV_USE_EVENTFD
		1078	if ((evfd = eventfd (0, 0)) >= 0)
		1079	{
		1080	evpipe [0] = -1;
		1081	fd_intern (evfd);
		1082	ev_io_set (&pipe_w, evfd, EV_READ);
		1083	}
		1084	else
		1085	#endif
		1086	{
		1087	while (pipe (evpipe))
		1088	ev_syserr ("(libev) error creating signal/async pipe");
		1089
795	fd_intern (sigpipe [0]);	1090	fd_intern (evpipe [0]);
796	fd_intern (sigpipe [1]);	1091	fd_intern (evpipe [1]);
		1092	ev_io_set (&pipe_w, evpipe [0], EV_READ);
		1093	}
797		1094
798	ev_io_set (&sigev, sigpipe [0], EV_READ);
799	ev_io_start (EV_A_ &sigev);	1095	ev_io_start (EV_A_ &pipe_w);
800	ev_unref (EV_A); /* child watcher should not keep loop alive */	1096	ev_unref (EV_A); /* watcher should not keep loop alive */
		1097	}
		1098	}
		1099
		1100	inline_size void
		1101	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		1102	{
		1103	if (!*flag)
		1104	{
		1105	int old_errno = errno; /* save errno because write might clobber it */
		1106
		1107	*flag = 1;
		1108
		1109	#if EV_USE_EVENTFD
		1110	if (evfd >= 0)
		1111	{
		1112	uint64_t counter = 1;
		1113	write (evfd, &counter, sizeof (uint64_t));
		1114	}
		1115	else
		1116	#endif
		1117	write (evpipe [1], &old_errno, 1);
		1118
		1119	errno = old_errno;
		1120	}
		1121	}
		1122
		1123	/* called whenever the libev signal pipe */
		1124	/* got some events (signal, async) */
		1125	static void
		1126	pipecb (EV_P_ ev_io *iow, int revents)
		1127	{
		1128	#if EV_USE_EVENTFD
		1129	if (evfd >= 0)
		1130	{
		1131	uint64_t counter;
		1132	read (evfd, &counter, sizeof (uint64_t));
		1133	}
		1134	else
		1135	#endif
		1136	{
		1137	char dummy;
		1138	read (evpipe [0], &dummy, 1);
		1139	}
		1140
		1141	if (gotsig && ev_is_default_loop (EV_A))
		1142	{
		1143	int signum;
		1144	gotsig = 0;
		1145
		1146	for (signum = signalmax; signum--; )
		1147	if (signals [signum].gotsig)
		1148	ev_feed_signal_event (EV_A_ signum + 1);
		1149	}
		1150
		1151	#if EV_ASYNC_ENABLE
		1152	if (gotasync)
		1153	{
		1154	int i;
		1155	gotasync = 0;
		1156
		1157	for (i = asynccnt; i--; )
		1158	if (asyncs [i]->sent)
		1159	{
		1160	asyncs [i]->sent = 0;
		1161	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		1162	}
		1163	}
		1164	#endif
801	}	1165	}
802		1166
803	/*****************************************************************************/	1167	/*****************************************************************************/
804		1168
		1169	static void
		1170	ev_sighandler (int signum)
		1171	{
		1172	#if EV_MULTIPLICITY
		1173	struct ev_loop *loop = &default_loop_struct;
		1174	#endif
		1175
		1176	#if _WIN32
		1177	signal (signum, ev_sighandler);
		1178	#endif
		1179
		1180	signals [signum - 1].gotsig = 1;
		1181	evpipe_write (EV_A_ &gotsig);
		1182	}
		1183
		1184	void noinline
		1185	ev_feed_signal_event (EV_P_ int signum)
		1186	{
		1187	WL w;
		1188
		1189	#if EV_MULTIPLICITY
		1190	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		1191	#endif
		1192
		1193	--signum;
		1194
		1195	if (signum < 0 || signum >= signalmax)
		1196	return;
		1197
		1198	signals [signum].gotsig = 0;
		1199
		1200	for (w = signals [signum].head; w; w = w->next)
		1201	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		1202	}
		1203
		1204	/*****************************************************************************/
		1205
805	static WL childs [EV_PID_HASHSIZE];	1206	static WL childs [EV_PID_HASHSIZE];
806		1207
807	#ifndef _WIN32	1208	#ifndef _WIN32
808		1209
809	static ev_signal childev;	1210	static ev_signal childev;
810		1211
811	void inline_speed	1212	#ifndef WIFCONTINUED
		1213	# define WIFCONTINUED(status) 0
		1214	#endif
		1215
		1216	/* handle a single child status event */
		1217	inline_speed void
812	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	1218	child_reap (EV_P_ int chain, int pid, int status)
813	{	1219	{
814	ev_child *w;	1220	ev_child *w;
		1221	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
815		1222
816	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1223	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1224	{
817	if (w->pid == pid || !w->pid)	1225	if ((w->pid == pid || !w->pid)
		1226	&& (!traced || (w->flags & 1)))
818	{	1227	{
819	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */	1228	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
820	w->rpid = pid;	1229	w->rpid = pid;
821	w->rstatus = status;	1230	w->rstatus = status;
822	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1231	ev_feed_event (EV_A_ (W)w, EV_CHILD);
823	}	1232	}
		1233	}
824	}	1234	}
825		1235
826	#ifndef WCONTINUED	1236	#ifndef WCONTINUED
827	# define WCONTINUED 0	1237	# define WCONTINUED 0
828	#endif	1238	#endif
829		1239
		1240	/* called on sigchld etc., calls waitpid */
830	static void	1241	static void
831	childcb (EV_P_ ev_signal *sw, int revents)	1242	childcb (EV_P_ ev_signal *sw, int revents)
832	{	1243	{
833	int pid, status;	1244	int pid, status;
834		1245
…		…
837	if (!WCONTINUED	1248	if (!WCONTINUED
838	|| errno != EINVAL	1249	|| errno != EINVAL
839	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))	1250	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
840	return;	1251	return;
841		1252
842	/* make sure we are called again until all childs have been reaped */	1253	/* make sure we are called again until all children have been reaped */
843	/* we need to do it this way so that the callback gets called before we continue */	1254	/* we need to do it this way so that the callback gets called before we continue */
844	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1255	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
845		1256
846	child_reap (EV_A_ sw, pid, pid, status);	1257	child_reap (EV_A_ pid, pid, status);
847	if (EV_PID_HASHSIZE > 1)	1258	if (EV_PID_HASHSIZE > 1)
848	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1259	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
849	}	1260	}
850		1261
851	#endif	1262	#endif
852		1263
853	/*****************************************************************************/	1264	/*****************************************************************************/
…		…
915	/* kqueue is borked on everything but netbsd apparently */	1326	/* kqueue is borked on everything but netbsd apparently */
916	/* it usually doesn't work correctly on anything but sockets and pipes */	1327	/* it usually doesn't work correctly on anything but sockets and pipes */
917	flags &= ~EVBACKEND_KQUEUE;	1328	flags &= ~EVBACKEND_KQUEUE;
918	#endif	1329	#endif
919	#ifdef __APPLE__	1330	#ifdef __APPLE__
920	// flags &= ~EVBACKEND_KQUEUE; for documentation	1331	/* only select works correctly on that "unix-certified" platform */
921	flags &= ~EVBACKEND_POLL;	1332	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1333	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
922	#endif	1334	#endif
923		1335
924	return flags;	1336	return flags;
925	}	1337	}
926		1338
927	unsigned int	1339	unsigned int
928	ev_embeddable_backends (void)	1340	ev_embeddable_backends (void)
929	{	1341	{
930	return EVBACKEND_EPOLL	1342	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
931	| EVBACKEND_KQUEUE	1343
932	| EVBACKEND_PORT;	1344	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1345	/* please fix it and tell me how to detect the fix */
		1346	flags &= ~EVBACKEND_EPOLL;
		1347
		1348	return flags;
933	}	1349	}
934		1350
935	unsigned int	1351	unsigned int
936	ev_backend (EV_P)	1352	ev_backend (EV_P)
937	{	1353	{
…		…
942	ev_loop_count (EV_P)	1358	ev_loop_count (EV_P)
943	{	1359	{
944	return loop_count;	1360	return loop_count;
945	}	1361	}
946		1362
		1363	unsigned int
		1364	ev_loop_depth (EV_P)
		1365	{
		1366	return loop_depth;
		1367	}
		1368
		1369	void
		1370	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1371	{
		1372	io_blocktime = interval;
		1373	}
		1374
		1375	void
		1376	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1377	{
		1378	timeout_blocktime = interval;
		1379	}
		1380
		1381	/* initialise a loop structure, must be zero-initialised */
947	static void noinline	1382	static void noinline
948	loop_init (EV_P_ unsigned int flags)	1383	loop_init (EV_P_ unsigned int flags)
949	{	1384	{
950	if (!backend)	1385	if (!backend)
951	{	1386	{
		1387	#if EV_USE_REALTIME
		1388	if (!have_realtime)
		1389	{
		1390	struct timespec ts;
		1391
		1392	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1393	have_realtime = 1;
		1394	}
		1395	#endif
		1396
952	#if EV_USE_MONOTONIC	1397	#if EV_USE_MONOTONIC
		1398	if (!have_monotonic)
953	{	1399	{
954	struct timespec ts;	1400	struct timespec ts;
		1401
955	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1402	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
956	have_monotonic = 1;	1403	have_monotonic = 1;
957	}	1404	}
958	#endif	1405	#endif
959		1406
960	ev_rt_now = ev_time ();	1407	ev_rt_now = ev_time ();
961	mn_now = get_clock ();	1408	mn_now = get_clock ();
962	now_floor = mn_now;	1409	now_floor = mn_now;
963	rtmn_diff = ev_rt_now - mn_now;	1410	rtmn_diff = ev_rt_now - mn_now;
		1411
		1412	io_blocktime = 0.;
		1413	timeout_blocktime = 0.;
		1414	backend = 0;
		1415	backend_fd = -1;
		1416	gotasync = 0;
		1417	#if EV_USE_INOTIFY
		1418	fs_fd = -2;
		1419	#endif
964		1420
965	/* pid check not overridable via env */	1421	/* pid check not overridable via env */
966	#ifndef _WIN32	1422	#ifndef _WIN32
967	if (flags & EVFLAG_FORKCHECK)	1423	if (flags & EVFLAG_FORKCHECK)
968	curpid = getpid ();	1424	curpid = getpid ();
…		…
971	if (!(flags & EVFLAG_NOENV)	1427	if (!(flags & EVFLAG_NOENV)
972	&& !enable_secure ()	1428	&& !enable_secure ()
973	&& getenv ("LIBEV_FLAGS"))	1429	&& getenv ("LIBEV_FLAGS"))
974	flags = atoi (getenv ("LIBEV_FLAGS"));	1430	flags = atoi (getenv ("LIBEV_FLAGS"));
975		1431
976	if (!(flags & 0x0000ffffUL))	1432	if (!(flags & 0x0000ffffU))
977	flags |= ev_recommended_backends ();	1433	flags |= ev_recommended_backends ();
978
979	backend = 0;
980	backend_fd = -1;
981	#if EV_USE_INOTIFY
982	fs_fd = -2;
983	#endif
984		1434
985	#if EV_USE_PORT	1435	#if EV_USE_PORT
986	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1436	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
987	#endif	1437	#endif
988	#if EV_USE_KQUEUE	1438	#if EV_USE_KQUEUE
…		…
996	#endif	1446	#endif
997	#if EV_USE_SELECT	1447	#if EV_USE_SELECT
998	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1448	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
999	#endif	1449	#endif
1000		1450
		1451	ev_prepare_init (&pending_w, pendingcb);
		1452
1001	ev_init (&sigev, sigcb);	1453	ev_init (&pipe_w, pipecb);
1002	ev_set_priority (&sigev, EV_MAXPRI);	1454	ev_set_priority (&pipe_w, EV_MAXPRI);
1003	}	1455	}
1004	}	1456	}
1005		1457
		1458	/* free up a loop structure */
1006	static void noinline	1459	static void noinline
1007	loop_destroy (EV_P)	1460	loop_destroy (EV_P)
1008	{	1461	{
1009	int i;	1462	int i;
		1463
		1464	if (ev_is_active (&pipe_w))
		1465	{
		1466	ev_ref (EV_A); /* signal watcher */
		1467	ev_io_stop (EV_A_ &pipe_w);
		1468
		1469	#if EV_USE_EVENTFD
		1470	if (evfd >= 0)
		1471	close (evfd);
		1472	#endif
		1473
		1474	if (evpipe [0] >= 0)
		1475	{
		1476	close (evpipe [0]);
		1477	close (evpipe [1]);
		1478	}
		1479	}
1010		1480
1011	#if EV_USE_INOTIFY	1481	#if EV_USE_INOTIFY
1012	if (fs_fd >= 0)	1482	if (fs_fd >= 0)
1013	close (fs_fd);	1483	close (fs_fd);
1014	#endif	1484	#endif
…		…
1038	#if EV_IDLE_ENABLE	1508	#if EV_IDLE_ENABLE
1039	array_free (idle, [i]);	1509	array_free (idle, [i]);
1040	#endif	1510	#endif
1041	}	1511	}
1042		1512
		1513	ev_free (anfds); anfdmax = 0;
		1514
1043	/* have to use the microsoft-never-gets-it-right macro */	1515	/* have to use the microsoft-never-gets-it-right macro */
		1516	array_free (rfeed, EMPTY);
1044	array_free (fdchange, EMPTY);	1517	array_free (fdchange, EMPTY);
1045	array_free (timer, EMPTY);	1518	array_free (timer, EMPTY);
1046	#if EV_PERIODIC_ENABLE	1519	#if EV_PERIODIC_ENABLE
1047	array_free (periodic, EMPTY);	1520	array_free (periodic, EMPTY);
1048	#endif	1521	#endif
		1522	#if EV_FORK_ENABLE
		1523	array_free (fork, EMPTY);
		1524	#endif
1049	array_free (prepare, EMPTY);	1525	array_free (prepare, EMPTY);
1050	array_free (check, EMPTY);	1526	array_free (check, EMPTY);
		1527	#if EV_ASYNC_ENABLE
		1528	array_free (async, EMPTY);
		1529	#endif
1051		1530
1052	backend = 0;	1531	backend = 0;
1053	}	1532	}
1054		1533
		1534	#if EV_USE_INOTIFY
1055	void inline_size infy_fork (EV_P);	1535	inline_size void infy_fork (EV_P);
		1536	#endif
1056		1537
1057	void inline_size	1538	inline_size void
1058	loop_fork (EV_P)	1539	loop_fork (EV_P)
1059	{	1540	{
1060	#if EV_USE_PORT	1541	#if EV_USE_PORT
1061	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1542	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1062	#endif	1543	#endif
…		…
1068	#endif	1549	#endif
1069	#if EV_USE_INOTIFY	1550	#if EV_USE_INOTIFY
1070	infy_fork (EV_A);	1551	infy_fork (EV_A);
1071	#endif	1552	#endif
1072		1553
1073	if (ev_is_active (&sigev))	1554	if (ev_is_active (&pipe_w))
1074	{	1555	{
1075	/* default loop */	1556	/* this "locks" the handlers against writing to the pipe */
		1557	/* while we modify the fd vars */
		1558	gotsig = 1;
		1559	#if EV_ASYNC_ENABLE
		1560	gotasync = 1;
		1561	#endif
1076		1562
1077	ev_ref (EV_A);	1563	ev_ref (EV_A);
1078	ev_io_stop (EV_A_ &sigev);	1564	ev_io_stop (EV_A_ &pipe_w);
		1565
		1566	#if EV_USE_EVENTFD
		1567	if (evfd >= 0)
		1568	close (evfd);
		1569	#endif
		1570
		1571	if (evpipe [0] >= 0)
		1572	{
1079	close (sigpipe [0]);	1573	close (evpipe [0]);
1080	close (sigpipe [1]);	1574	close (evpipe [1]);
		1575	}
1081		1576
1082	while (pipe (sigpipe))
1083	syserr ("(libev) error creating pipe");
1084
1085	siginit (EV_A);	1577	evpipe_init (EV_A);
		1578	/* now iterate over everything, in case we missed something */
		1579	pipecb (EV_A_ &pipe_w, EV_READ);
1086	}	1580	}
1087		1581
1088	postfork = 0;	1582	postfork = 0;
1089	}	1583	}
1090		1584
1091	#if EV_MULTIPLICITY	1585	#if EV_MULTIPLICITY
		1586
1092	struct ev_loop *	1587	struct ev_loop *
1093	ev_loop_new (unsigned int flags)	1588	ev_loop_new (unsigned int flags)
1094	{	1589	{
1095	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1590	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1096		1591
…		…
1112	}	1607	}
1113		1608
1114	void	1609	void
1115	ev_loop_fork (EV_P)	1610	ev_loop_fork (EV_P)
1116	{	1611	{
1117	postfork = 1;	1612	postfork = 1; /* must be in line with ev_default_fork */
1118	}	1613	}
1119		1614
		1615	#if EV_VERIFY
		1616	static void noinline
		1617	verify_watcher (EV_P_ W w)
		1618	{
		1619	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1620
		1621	if (w->pending)
		1622	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1623	}
		1624
		1625	static void noinline
		1626	verify_heap (EV_P_ ANHE *heap, int N)
		1627	{
		1628	int i;
		1629
		1630	for (i = HEAP0; i < N + HEAP0; ++i)
		1631	{
		1632	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1633	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1634	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1635
		1636	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1637	}
		1638	}
		1639
		1640	static void noinline
		1641	array_verify (EV_P_ W *ws, int cnt)
		1642	{
		1643	while (cnt--)
		1644	{
		1645	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1646	verify_watcher (EV_A_ ws [cnt]);
		1647	}
		1648	}
		1649	#endif
		1650
		1651	void
		1652	ev_loop_verify (EV_P)
		1653	{
		1654	#if EV_VERIFY
		1655	int i;
		1656	WL w;
		1657
		1658	assert (activecnt >= -1);
		1659
		1660	assert (fdchangemax >= fdchangecnt);
		1661	for (i = 0; i < fdchangecnt; ++i)
		1662	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1663
		1664	assert (anfdmax >= 0);
		1665	for (i = 0; i < anfdmax; ++i)
		1666	for (w = anfds [i].head; w; w = w->next)
		1667	{
		1668	verify_watcher (EV_A_ (W)w);
		1669	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1670	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1671	}
		1672
		1673	assert (timermax >= timercnt);
		1674	verify_heap (EV_A_ timers, timercnt);
		1675
		1676	#if EV_PERIODIC_ENABLE
		1677	assert (periodicmax >= periodiccnt);
		1678	verify_heap (EV_A_ periodics, periodiccnt);
		1679	#endif
		1680
		1681	for (i = NUMPRI; i--; )
		1682	{
		1683	assert (pendingmax [i] >= pendingcnt [i]);
		1684	#if EV_IDLE_ENABLE
		1685	assert (idleall >= 0);
		1686	assert (idlemax [i] >= idlecnt [i]);
		1687	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1688	#endif
		1689	}
		1690
		1691	#if EV_FORK_ENABLE
		1692	assert (forkmax >= forkcnt);
		1693	array_verify (EV_A_ (W *)forks, forkcnt);
		1694	#endif
		1695
		1696	#if EV_ASYNC_ENABLE
		1697	assert (asyncmax >= asynccnt);
		1698	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1699	#endif
		1700
		1701	assert (preparemax >= preparecnt);
		1702	array_verify (EV_A_ (W *)prepares, preparecnt);
		1703
		1704	assert (checkmax >= checkcnt);
		1705	array_verify (EV_A_ (W *)checks, checkcnt);
		1706
		1707	# if 0
		1708	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1709	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1120	#endif	1710	# endif
		1711	#endif
		1712	}
		1713
		1714	#endif /* multiplicity */
1121		1715
1122	#if EV_MULTIPLICITY	1716	#if EV_MULTIPLICITY
1123	struct ev_loop *	1717	struct ev_loop *
1124	ev_default_loop_init (unsigned int flags)	1718	ev_default_loop_init (unsigned int flags)
1125	#else	1719	#else
1126	int	1720	int
1127	ev_default_loop (unsigned int flags)	1721	ev_default_loop (unsigned int flags)
1128	#endif	1722	#endif
1129	{	1723	{
1130	if (sigpipe [0] == sigpipe [1])
1131	if (pipe (sigpipe))
1132	return 0;
1133
1134	if (!ev_default_loop_ptr)	1724	if (!ev_default_loop_ptr)
1135	{	1725	{
1136	#if EV_MULTIPLICITY	1726	#if EV_MULTIPLICITY
1137	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1727	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1138	#else	1728	#else
…		…
1141		1731
1142	loop_init (EV_A_ flags);	1732	loop_init (EV_A_ flags);
1143		1733
1144	if (ev_backend (EV_A))	1734	if (ev_backend (EV_A))
1145	{	1735	{
1146	siginit (EV_A);
1147
1148	#ifndef _WIN32	1736	#ifndef _WIN32
1149	ev_signal_init (&childev, childcb, SIGCHLD);	1737	ev_signal_init (&childev, childcb, SIGCHLD);
1150	ev_set_priority (&childev, EV_MAXPRI);	1738	ev_set_priority (&childev, EV_MAXPRI);
1151	ev_signal_start (EV_A_ &childev);	1739	ev_signal_start (EV_A_ &childev);
1152	ev_unref (EV_A); /* child watcher should not keep loop alive */	1740	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1164	{	1752	{
1165	#if EV_MULTIPLICITY	1753	#if EV_MULTIPLICITY
1166	struct ev_loop *loop = ev_default_loop_ptr;	1754	struct ev_loop *loop = ev_default_loop_ptr;
1167	#endif	1755	#endif
1168		1756
		1757	ev_default_loop_ptr = 0;
		1758
1169	#ifndef _WIN32	1759	#ifndef _WIN32
1170	ev_ref (EV_A); /* child watcher */	1760	ev_ref (EV_A); /* child watcher */
1171	ev_signal_stop (EV_A_ &childev);	1761	ev_signal_stop (EV_A_ &childev);
1172	#endif	1762	#endif
1173		1763
1174	ev_ref (EV_A); /* signal watcher */
1175	ev_io_stop (EV_A_ &sigev);
1176
1177	close (sigpipe [0]); sigpipe [0] = 0;
1178	close (sigpipe [1]); sigpipe [1] = 0;
1179
1180	loop_destroy (EV_A);	1764	loop_destroy (EV_A);
1181	}	1765	}
1182		1766
1183	void	1767	void
1184	ev_default_fork (void)	1768	ev_default_fork (void)
1185	{	1769	{
1186	#if EV_MULTIPLICITY	1770	#if EV_MULTIPLICITY
1187	struct ev_loop *loop = ev_default_loop_ptr;	1771	struct ev_loop *loop = ev_default_loop_ptr;
1188	#endif	1772	#endif
1189		1773
1190	if (backend)	1774	postfork = 1; /* must be in line with ev_loop_fork */
1191	postfork = 1;
1192	}	1775	}
1193		1776
1194	/*****************************************************************************/	1777	/*****************************************************************************/
1195		1778
1196	void	1779	void
1197	ev_invoke (EV_P_ void *w, int revents)	1780	ev_invoke (EV_P_ void *w, int revents)
1198	{	1781	{
1199	EV_CB_INVOKE ((W)w, revents);	1782	EV_CB_INVOKE ((W)w, revents);
1200	}	1783	}
1201		1784
1202	void inline_speed	1785	inline_speed void
1203	call_pending (EV_P)	1786	call_pending (EV_P)
1204	{	1787	{
1205	int pri;	1788	int pri;
1206		1789
1207	for (pri = NUMPRI; pri--; )	1790	for (pri = NUMPRI; pri--; )
1208	while (pendingcnt [pri])	1791	while (pendingcnt [pri])
1209	{	1792	{
1210	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1793	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1211		1794
1212	if (expect_true (p->w))
1213	{
1214	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1795	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1796	/* ^ this is no longer true, as pending_w could be here */
1215		1797
1216	p->w->pending = 0;	1798	p->w->pending = 0;
1217	EV_CB_INVOKE (p->w, p->events);	1799	EV_CB_INVOKE (p->w, p->events);
1218	}	1800	EV_FREQUENT_CHECK;
1219	}	1801	}
1220	}	1802	}
1221		1803
1222	void inline_size
1223	timers_reify (EV_P)
1224	{
1225	while (timercnt && ((WT)timers [0])->at <= mn_now)
1226	{
1227	ev_timer *w = (ev_timer *)timers [0];
1228
1229	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1230
1231	/* first reschedule or stop timer */
1232	if (w->repeat)
1233	{
1234	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1235
1236	((WT)w)->at += w->repeat;
1237	if (((WT)w)->at < mn_now)
1238	((WT)w)->at = mn_now;
1239
1240	downheap (timers, timercnt, 0);
1241	}
1242	else
1243	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1244
1245	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1246	}
1247	}
1248
1249	#if EV_PERIODIC_ENABLE
1250	void inline_size
1251	periodics_reify (EV_P)
1252	{
1253	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1254	{
1255	ev_periodic *w = (ev_periodic *)periodics [0];
1256
1257	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1258
1259	/* first reschedule or stop timer */
1260	if (w->reschedule_cb)
1261	{
1262	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1263	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1264	downheap (periodics, periodiccnt, 0);
1265	}
1266	else if (w->interval)
1267	{
1268	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1269	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1270	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1271	downheap (periodics, periodiccnt, 0);
1272	}
1273	else
1274	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1275
1276	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1277	}
1278	}
1279
1280	static void noinline
1281	periodics_reschedule (EV_P)
1282	{
1283	int i;
1284
1285	/* adjust periodics after time jump */
1286	for (i = 0; i < periodiccnt; ++i)
1287	{
1288	ev_periodic *w = (ev_periodic *)periodics [i];
1289
1290	if (w->reschedule_cb)
1291	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1292	else if (w->interval)
1293	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1294	}
1295
1296	/* now rebuild the heap */
1297	for (i = periodiccnt >> 1; i--; )
1298	downheap (periodics, periodiccnt, i);
1299	}
1300	#endif
1301
1302	#if EV_IDLE_ENABLE	1804	#if EV_IDLE_ENABLE
1303	void inline_size	1805	/* make idle watchers pending. this handles the "call-idle */
		1806	/* only when higher priorities are idle" logic */
		1807	inline_size void
1304	idle_reify (EV_P)	1808	idle_reify (EV_P)
1305	{	1809	{
1306	if (expect_false (idleall))	1810	if (expect_false (idleall))
1307	{	1811	{
1308	int pri;	1812	int pri;
…		…
1320	}	1824	}
1321	}	1825	}
1322	}	1826	}
1323	#endif	1827	#endif
1324		1828
1325	void inline_speed	1829	/* make timers pending */
		1830	inline_size void
		1831	timers_reify (EV_P)
		1832	{
		1833	EV_FREQUENT_CHECK;
		1834
		1835	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		1836	{
		1837	do
		1838	{
		1839	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1840
		1841	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1842
		1843	/* first reschedule or stop timer */
		1844	if (w->repeat)
		1845	{
		1846	ev_at (w) += w->repeat;
		1847	if (ev_at (w) < mn_now)
		1848	ev_at (w) = mn_now;
		1849
		1850	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1851
		1852	ANHE_at_cache (timers [HEAP0]);
		1853	downheap (timers, timercnt, HEAP0);
		1854	}
		1855	else
		1856	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1857
		1858	EV_FREQUENT_CHECK;
		1859	feed_reverse (EV_A_ (W)w);
		1860	}
		1861	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
		1862
		1863	feed_reverse_done (EV_A_ EV_TIMEOUT);
		1864	}
		1865	}
		1866
		1867	#if EV_PERIODIC_ENABLE
		1868	/* make periodics pending */
		1869	inline_size void
		1870	periodics_reify (EV_P)
		1871	{
		1872	EV_FREQUENT_CHECK;
		1873
		1874	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		1875	{
		1876	int feed_count = 0;
		1877
		1878	do
		1879	{
		1880	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1881
		1882	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1883
		1884	/* first reschedule or stop timer */
		1885	if (w->reschedule_cb)
		1886	{
		1887	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1888
		1889	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		1890
		1891	ANHE_at_cache (periodics [HEAP0]);
		1892	downheap (periodics, periodiccnt, HEAP0);
		1893	}
		1894	else if (w->interval)
		1895	{
		1896	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1897	/* if next trigger time is not sufficiently in the future, put it there */
		1898	/* this might happen because of floating point inexactness */
		1899	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1900	{
		1901	ev_at (w) += w->interval;
		1902
		1903	/* if interval is unreasonably low we might still have a time in the past */
		1904	/* so correct this. this will make the periodic very inexact, but the user */
		1905	/* has effectively asked to get triggered more often than possible */
		1906	if (ev_at (w) < ev_rt_now)
		1907	ev_at (w) = ev_rt_now;
		1908	}
		1909
		1910	ANHE_at_cache (periodics [HEAP0]);
		1911	downheap (periodics, periodiccnt, HEAP0);
		1912	}
		1913	else
		1914	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1915
		1916	EV_FREQUENT_CHECK;
		1917	feed_reverse (EV_A_ (W)w);
		1918	}
		1919	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
		1920
		1921	feed_reverse_done (EV_A_ EV_PERIODIC);
		1922	}
		1923	}
		1924
		1925	/* simply recalculate all periodics */
		1926	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
		1927	static void noinline
		1928	periodics_reschedule (EV_P)
		1929	{
		1930	int i;
		1931
		1932	/* adjust periodics after time jump */
		1933	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		1934	{
		1935	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		1936
		1937	if (w->reschedule_cb)
		1938	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1939	else if (w->interval)
		1940	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1941
		1942	ANHE_at_cache (periodics [i]);
		1943	}
		1944
		1945	reheap (periodics, periodiccnt);
		1946	}
		1947	#endif
		1948
		1949	/* adjust all timers by a given offset */
		1950	static void noinline
		1951	timers_reschedule (EV_P_ ev_tstamp adjust)
		1952	{
		1953	int i;
		1954
		1955	for (i = 0; i < timercnt; ++i)
		1956	{
		1957	ANHE *he = timers + i + HEAP0;
		1958	ANHE_w (*he)->at += adjust;
		1959	ANHE_at_cache (*he);
		1960	}
		1961	}
		1962
		1963	/* fetch new monotonic and realtime times from the kernel */
		1964	/* also detetc if there was a timejump, and act accordingly */
		1965	inline_speed void
1326	time_update (EV_P_ ev_tstamp max_block)	1966	time_update (EV_P_ ev_tstamp max_block)
1327	{	1967	{
1328	int i;
1329
1330	#if EV_USE_MONOTONIC	1968	#if EV_USE_MONOTONIC
1331	if (expect_true (have_monotonic))	1969	if (expect_true (have_monotonic))
1332	{	1970	{
		1971	int i;
1333	ev_tstamp odiff = rtmn_diff;	1972	ev_tstamp odiff = rtmn_diff;
1334		1973
1335	mn_now = get_clock ();	1974	mn_now = get_clock ();
1336		1975
1337	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	1976	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1355	*/	1994	*/
1356	for (i = 4; --i; )	1995	for (i = 4; --i; )
1357	{	1996	{
1358	rtmn_diff = ev_rt_now - mn_now;	1997	rtmn_diff = ev_rt_now - mn_now;
1359		1998
1360	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1999	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1361	return; /* all is well */	2000	return; /* all is well */
1362		2001
1363	ev_rt_now = ev_time ();	2002	ev_rt_now = ev_time ();
1364	mn_now = get_clock ();	2003	mn_now = get_clock ();
1365	now_floor = mn_now;	2004	now_floor = mn_now;
1366	}	2005	}
1367		2006
		2007	/* no timer adjustment, as the monotonic clock doesn't jump */
		2008	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1368	# if EV_PERIODIC_ENABLE	2009	# if EV_PERIODIC_ENABLE
1369	periodics_reschedule (EV_A);	2010	periodics_reschedule (EV_A);
1370	# endif	2011	# endif
1371	/* no timer adjustment, as the monotonic clock doesn't jump */
1372	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1373	}	2012	}
1374	else	2013	else
1375	#endif	2014	#endif
1376	{	2015	{
1377	ev_rt_now = ev_time ();	2016	ev_rt_now = ev_time ();
1378		2017
1379	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2018	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1380	{	2019	{
		2020	/* adjust timers. this is easy, as the offset is the same for all of them */
		2021	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1381	#if EV_PERIODIC_ENABLE	2022	#if EV_PERIODIC_ENABLE
1382	periodics_reschedule (EV_A);	2023	periodics_reschedule (EV_A);
1383	#endif	2024	#endif
1384	/* adjust timers. this is easy, as the offset is the same for all of them */
1385	for (i = 0; i < timercnt; ++i)
1386	((WT)timers [i])->at += ev_rt_now - mn_now;
1387	}	2025	}
1388		2026
1389	mn_now = ev_rt_now;	2027	mn_now = ev_rt_now;
1390	}	2028	}
1391	}	2029	}
1392		2030
1393	void	2031	void
1394	ev_ref (EV_P)
1395	{
1396	++activecnt;
1397	}
1398
1399	void
1400	ev_unref (EV_P)
1401	{
1402	--activecnt;
1403	}
1404
1405	static int loop_done;
1406
1407	void
1408	ev_loop (EV_P_ int flags)	2032	ev_loop (EV_P_ int flags)
1409	{	2033	{
1410	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	2034	++loop_depth;
1411	? EVUNLOOP_ONE	2035
1412	: EVUNLOOP_CANCEL;	2036	loop_done = EVUNLOOP_CANCEL;
1413		2037
1414	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2038	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1415		2039
1416	do	2040	do
1417	{	2041	{
		2042	#if EV_VERIFY >= 2
		2043	ev_loop_verify (EV_A);
		2044	#endif
		2045
1418	#ifndef _WIN32	2046	#ifndef _WIN32
1419	if (expect_false (curpid)) /* penalise the forking check even more */	2047	if (expect_false (curpid)) /* penalise the forking check even more */
1420	if (expect_false (getpid () != curpid))	2048	if (expect_false (getpid () != curpid))
1421	{	2049	{
1422	curpid = getpid ();	2050	curpid = getpid ();
…		…
1439	{	2067	{
1440	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2068	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1441	call_pending (EV_A);	2069	call_pending (EV_A);
1442	}	2070	}
1443		2071
1444	if (expect_false (!activecnt))
1445	break;
1446
1447	/* we might have forked, so reify kernel state if necessary */	2072	/* we might have forked, so reify kernel state if necessary */
1448	if (expect_false (postfork))	2073	if (expect_false (postfork))
1449	loop_fork (EV_A);	2074	loop_fork (EV_A);
1450		2075
1451	/* update fd-related kernel structures */	2076	/* update fd-related kernel structures */
1452	fd_reify (EV_A);	2077	fd_reify (EV_A);
1453		2078
1454	/* calculate blocking time */	2079	/* calculate blocking time */
1455	{	2080	{
1456	ev_tstamp block;	2081	ev_tstamp waittime = 0.;
		2082	ev_tstamp sleeptime = 0.;
1457		2083
1458	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))	2084	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1459	block = 0.; /* do not block at all */
1460	else
1461	{	2085	{
		2086	/* remember old timestamp for io_blocktime calculation */
		2087	ev_tstamp prev_mn_now = mn_now;
		2088
1462	/* update time to cancel out callback processing overhead */	2089	/* update time to cancel out callback processing overhead */
1463	time_update (EV_A_ 1e100);	2090	time_update (EV_A_ 1e100);
1464		2091
1465	block = MAX_BLOCKTIME;	2092	waittime = MAX_BLOCKTIME;
1466		2093
1467	if (timercnt)	2094	if (timercnt)
1468	{	2095	{
1469	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	2096	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1470	if (block > to) block = to;	2097	if (waittime > to) waittime = to;
1471	}	2098	}
1472		2099
1473	#if EV_PERIODIC_ENABLE	2100	#if EV_PERIODIC_ENABLE
1474	if (periodiccnt)	2101	if (periodiccnt)
1475	{	2102	{
1476	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	2103	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1477	if (block > to) block = to;	2104	if (waittime > to) waittime = to;
1478	}	2105	}
1479	#endif	2106	#endif
1480		2107
		2108	/* don't let timeouts decrease the waittime below timeout_blocktime */
		2109	if (expect_false (waittime < timeout_blocktime))
		2110	waittime = timeout_blocktime;
		2111
		2112	/* extra check because io_blocktime is commonly 0 */
1481	if (expect_false (block < 0.)) block = 0.;	2113	if (expect_false (io_blocktime))
		2114	{
		2115	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2116
		2117	if (sleeptime > waittime - backend_fudge)
		2118	sleeptime = waittime - backend_fudge;
		2119
		2120	if (expect_true (sleeptime > 0.))
		2121	{
		2122	ev_sleep (sleeptime);
		2123	waittime -= sleeptime;
		2124	}
		2125	}
1482	}	2126	}
1483		2127
1484	++loop_count;	2128	++loop_count;
1485	backend_poll (EV_A_ block);	2129	backend_poll (EV_A_ waittime);
1486		2130
1487	/* update ev_rt_now, do magic */	2131	/* update ev_rt_now, do magic */
1488	time_update (EV_A_ block);	2132	time_update (EV_A_ waittime + sleeptime);
1489	}	2133	}
1490		2134
1491	/* queue pending timers and reschedule them */	2135	/* queue pending timers and reschedule them */
1492	timers_reify (EV_A); /* relative timers called last */	2136	timers_reify (EV_A); /* relative timers called last */
1493	#if EV_PERIODIC_ENABLE	2137	#if EV_PERIODIC_ENABLE
…		…
1502	/* queue check watchers, to be executed first */	2146	/* queue check watchers, to be executed first */
1503	if (expect_false (checkcnt))	2147	if (expect_false (checkcnt))
1504	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2148	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1505		2149
1506	call_pending (EV_A);	2150	call_pending (EV_A);
1507
1508	}	2151	}
1509	while (expect_true (activecnt && !loop_done));	2152	while (expect_true (
		2153	activecnt
		2154	&& !loop_done
		2155	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		2156	));
1510		2157
1511	if (loop_done == EVUNLOOP_ONE)	2158	if (loop_done == EVUNLOOP_ONE)
1512	loop_done = EVUNLOOP_CANCEL;	2159	loop_done = EVUNLOOP_CANCEL;
		2160
		2161	--loop_depth;
1513	}	2162	}
1514		2163
1515	void	2164	void
1516	ev_unloop (EV_P_ int how)	2165	ev_unloop (EV_P_ int how)
1517	{	2166	{
1518	loop_done = how;	2167	loop_done = how;
1519	}	2168	}
1520		2169
		2170	void
		2171	ev_ref (EV_P)
		2172	{
		2173	++activecnt;
		2174	}
		2175
		2176	void
		2177	ev_unref (EV_P)
		2178	{
		2179	--activecnt;
		2180	}
		2181
		2182	void
		2183	ev_now_update (EV_P)
		2184	{
		2185	time_update (EV_A_ 1e100);
		2186	}
		2187
		2188	void
		2189	ev_suspend (EV_P)
		2190	{
		2191	ev_now_update (EV_A);
		2192	}
		2193
		2194	void
		2195	ev_resume (EV_P)
		2196	{
		2197	ev_tstamp mn_prev = mn_now;
		2198
		2199	ev_now_update (EV_A);
		2200	timers_reschedule (EV_A_ mn_now - mn_prev);
		2201	#if EV_PERIODIC_ENABLE
		2202	/* TODO: really do this? */
		2203	periodics_reschedule (EV_A);
		2204	#endif
		2205	}
		2206
1521	/*****************************************************************************/	2207	/*****************************************************************************/
		2208	/* singly-linked list management, used when the expected list length is short */
1522		2209
1523	void inline_size	2210	inline_size void
1524	wlist_add (WL *head, WL elem)	2211	wlist_add (WL *head, WL elem)
1525	{	2212	{
1526	elem->next = *head;	2213	elem->next = *head;
1527	*head = elem;	2214	*head = elem;
1528	}	2215	}
1529		2216
1530	void inline_size	2217	inline_size void
1531	wlist_del (WL *head, WL elem)	2218	wlist_del (WL *head, WL elem)
1532	{	2219	{
1533	while (*head)	2220	while (*head)
1534	{	2221	{
1535	if (*head == elem)	2222	if (*head == elem)
…		…
1540		2227
1541	head = &(*head)->next;	2228	head = &(*head)->next;
1542	}	2229	}
1543	}	2230	}
1544		2231
1545	void inline_speed	2232	/* internal, faster, version of ev_clear_pending */
		2233	inline_speed void
1546	clear_pending (EV_P_ W w)	2234	clear_pending (EV_P_ W w)
1547	{	2235	{
1548	if (w->pending)	2236	if (w->pending)
1549	{	2237	{
1550	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2238	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1551	w->pending = 0;	2239	w->pending = 0;
1552	}	2240	}
1553	}	2241	}
1554		2242
1555	int	2243	int
…		…
1559	int pending = w_->pending;	2247	int pending = w_->pending;
1560		2248
1561	if (expect_true (pending))	2249	if (expect_true (pending))
1562	{	2250	{
1563	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2251	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2252	p->w = (W)&pending_w;
1564	w_->pending = 0;	2253	w_->pending = 0;
1565	p->w = 0;
1566	return p->events;	2254	return p->events;
1567	}	2255	}
1568	else	2256	else
1569	return 0;	2257	return 0;
1570	}	2258	}
1571		2259
1572	void inline_size	2260	inline_size void
1573	pri_adjust (EV_P_ W w)	2261	pri_adjust (EV_P_ W w)
1574	{	2262	{
1575	int pri = w->priority;	2263	int pri = w->priority;
1576	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2264	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1577	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2265	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1578	w->priority = pri;	2266	w->priority = pri;
1579	}	2267	}
1580		2268
1581	void inline_speed	2269	inline_speed void
1582	ev_start (EV_P_ W w, int active)	2270	ev_start (EV_P_ W w, int active)
1583	{	2271	{
1584	pri_adjust (EV_A_ w);	2272	pri_adjust (EV_A_ w);
1585	w->active = active;	2273	w->active = active;
1586	ev_ref (EV_A);	2274	ev_ref (EV_A);
1587	}	2275	}
1588		2276
1589	void inline_size	2277	inline_size void
1590	ev_stop (EV_P_ W w)	2278	ev_stop (EV_P_ W w)
1591	{	2279	{
1592	ev_unref (EV_A);	2280	ev_unref (EV_A);
1593	w->active = 0;	2281	w->active = 0;
1594	}	2282	}
…		…
1601	int fd = w->fd;	2289	int fd = w->fd;
1602		2290
1603	if (expect_false (ev_is_active (w)))	2291	if (expect_false (ev_is_active (w)))
1604	return;	2292	return;
1605		2293
1606	assert (("ev_io_start called with negative fd", fd >= 0));	2294	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2295	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2296
		2297	EV_FREQUENT_CHECK;
1607		2298
1608	ev_start (EV_A_ (W)w, 1);	2299	ev_start (EV_A_ (W)w, 1);
1609	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2300	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1610	wlist_add (&anfds[fd].head, (WL)w);	2301	wlist_add (&anfds[fd].head, (WL)w);
1611		2302
1612	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2303	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
1613	w->events &= ~EV_IOFDSET;	2304	w->events &= ~EV__IOFDSET;
		2305
		2306	EV_FREQUENT_CHECK;
1614	}	2307	}
1615		2308
1616	void noinline	2309	void noinline
1617	ev_io_stop (EV_P_ ev_io *w)	2310	ev_io_stop (EV_P_ ev_io *w)
1618	{	2311	{
1619	clear_pending (EV_A_ (W)w);	2312	clear_pending (EV_A_ (W)w);
1620	if (expect_false (!ev_is_active (w)))	2313	if (expect_false (!ev_is_active (w)))
1621	return;	2314	return;
1622		2315
1623	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2316	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2317
		2318	EV_FREQUENT_CHECK;
1624		2319
1625	wlist_del (&anfds[w->fd].head, (WL)w);	2320	wlist_del (&anfds[w->fd].head, (WL)w);
1626	ev_stop (EV_A_ (W)w);	2321	ev_stop (EV_A_ (W)w);
1627		2322
1628	fd_change (EV_A_ w->fd, 1);	2323	fd_change (EV_A_ w->fd, 1);
		2324
		2325	EV_FREQUENT_CHECK;
1629	}	2326	}
1630		2327
1631	void noinline	2328	void noinline
1632	ev_timer_start (EV_P_ ev_timer *w)	2329	ev_timer_start (EV_P_ ev_timer *w)
1633	{	2330	{
1634	if (expect_false (ev_is_active (w)))	2331	if (expect_false (ev_is_active (w)))
1635	return;	2332	return;
1636		2333
1637	((WT)w)->at += mn_now;	2334	ev_at (w) += mn_now;
1638		2335
1639	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2336	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1640		2337
		2338	EV_FREQUENT_CHECK;
		2339
		2340	++timercnt;
1641	ev_start (EV_A_ (W)w, ++timercnt);	2341	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1642	array_needsize (WT, timers, timermax, timercnt, EMPTY2);	2342	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1643	timers [timercnt - 1] = (WT)w;	2343	ANHE_w (timers [ev_active (w)]) = (WT)w;
1644	upheap (timers, timercnt - 1);	2344	ANHE_at_cache (timers [ev_active (w)]);
		2345	upheap (timers, ev_active (w));
1645		2346
		2347	EV_FREQUENT_CHECK;
		2348
1646	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	2349	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1647	}	2350	}
1648		2351
1649	void noinline	2352	void noinline
1650	ev_timer_stop (EV_P_ ev_timer *w)	2353	ev_timer_stop (EV_P_ ev_timer *w)
1651	{	2354	{
1652	clear_pending (EV_A_ (W)w);	2355	clear_pending (EV_A_ (W)w);
1653	if (expect_false (!ev_is_active (w)))	2356	if (expect_false (!ev_is_active (w)))
1654	return;	2357	return;
1655		2358
1656	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));	2359	EV_FREQUENT_CHECK;
1657		2360
1658	{	2361	{
1659	int active = ((W)w)->active;	2362	int active = ev_active (w);
1660		2363
		2364	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2365
		2366	--timercnt;
		2367
1661	if (expect_true (--active < --timercnt))	2368	if (expect_true (active < timercnt + HEAP0))
1662	{	2369	{
1663	timers [active] = timers [timercnt];	2370	timers [active] = timers [timercnt + HEAP0];
1664	adjustheap (timers, timercnt, active);	2371	adjustheap (timers, timercnt, active);
1665	}	2372	}
1666	}	2373	}
1667		2374
1668	((WT)w)->at -= mn_now;	2375	EV_FREQUENT_CHECK;
		2376
		2377	ev_at (w) -= mn_now;
1669		2378
1670	ev_stop (EV_A_ (W)w);	2379	ev_stop (EV_A_ (W)w);
1671	}	2380	}
1672		2381
1673	void noinline	2382	void noinline
1674	ev_timer_again (EV_P_ ev_timer *w)	2383	ev_timer_again (EV_P_ ev_timer *w)
1675	{	2384	{
		2385	EV_FREQUENT_CHECK;
		2386
1676	if (ev_is_active (w))	2387	if (ev_is_active (w))
1677	{	2388	{
1678	if (w->repeat)	2389	if (w->repeat)
1679	{	2390	{
1680	((WT)w)->at = mn_now + w->repeat;	2391	ev_at (w) = mn_now + w->repeat;
		2392	ANHE_at_cache (timers [ev_active (w)]);
1681	adjustheap (timers, timercnt, ((W)w)->active - 1);	2393	adjustheap (timers, timercnt, ev_active (w));
1682	}	2394	}
1683	else	2395	else
1684	ev_timer_stop (EV_A_ w);	2396	ev_timer_stop (EV_A_ w);
1685	}	2397	}
1686	else if (w->repeat)	2398	else if (w->repeat)
1687	{	2399	{
1688	w->at = w->repeat;	2400	ev_at (w) = w->repeat;
1689	ev_timer_start (EV_A_ w);	2401	ev_timer_start (EV_A_ w);
1690	}	2402	}
		2403
		2404	EV_FREQUENT_CHECK;
1691	}	2405	}
1692		2406
1693	#if EV_PERIODIC_ENABLE	2407	#if EV_PERIODIC_ENABLE
1694	void noinline	2408	void noinline
1695	ev_periodic_start (EV_P_ ev_periodic *w)	2409	ev_periodic_start (EV_P_ ev_periodic *w)
1696	{	2410	{
1697	if (expect_false (ev_is_active (w)))	2411	if (expect_false (ev_is_active (w)))
1698	return;	2412	return;
1699		2413
1700	if (w->reschedule_cb)	2414	if (w->reschedule_cb)
1701	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2415	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1702	else if (w->interval)	2416	else if (w->interval)
1703	{	2417	{
1704	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2418	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1705	/* this formula differs from the one in periodic_reify because we do not always round up */	2419	/* this formula differs from the one in periodic_reify because we do not always round up */
1706	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2420	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1707	}	2421	}
1708	else	2422	else
1709	((WT)w)->at = w->offset;	2423	ev_at (w) = w->offset;
1710		2424
		2425	EV_FREQUENT_CHECK;
		2426
		2427	++periodiccnt;
1711	ev_start (EV_A_ (W)w, ++periodiccnt);	2428	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1712	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);	2429	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1713	periodics [periodiccnt - 1] = (WT)w;	2430	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1714	upheap (periodics, periodiccnt - 1);	2431	ANHE_at_cache (periodics [ev_active (w)]);
		2432	upheap (periodics, ev_active (w));
1715		2433
		2434	EV_FREQUENT_CHECK;
		2435
1716	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	2436	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1717	}	2437	}
1718		2438
1719	void noinline	2439	void noinline
1720	ev_periodic_stop (EV_P_ ev_periodic *w)	2440	ev_periodic_stop (EV_P_ ev_periodic *w)
1721	{	2441	{
1722	clear_pending (EV_A_ (W)w);	2442	clear_pending (EV_A_ (W)w);
1723	if (expect_false (!ev_is_active (w)))	2443	if (expect_false (!ev_is_active (w)))
1724	return;	2444	return;
1725		2445
1726	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));	2446	EV_FREQUENT_CHECK;
1727		2447
1728	{	2448	{
1729	int active = ((W)w)->active;	2449	int active = ev_active (w);
1730		2450
		2451	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2452
		2453	--periodiccnt;
		2454
1731	if (expect_true (--active < --periodiccnt))	2455	if (expect_true (active < periodiccnt + HEAP0))
1732	{	2456	{
1733	periodics [active] = periodics [periodiccnt];	2457	periodics [active] = periodics [periodiccnt + HEAP0];
1734	adjustheap (periodics, periodiccnt, active);	2458	adjustheap (periodics, periodiccnt, active);
1735	}	2459	}
1736	}	2460	}
1737		2461
		2462	EV_FREQUENT_CHECK;
		2463
1738	ev_stop (EV_A_ (W)w);	2464	ev_stop (EV_A_ (W)w);
1739	}	2465	}
1740		2466
1741	void noinline	2467	void noinline
1742	ev_periodic_again (EV_P_ ev_periodic *w)	2468	ev_periodic_again (EV_P_ ev_periodic *w)
…		…
1753		2479
1754	void noinline	2480	void noinline
1755	ev_signal_start (EV_P_ ev_signal *w)	2481	ev_signal_start (EV_P_ ev_signal *w)
1756	{	2482	{
1757	#if EV_MULTIPLICITY	2483	#if EV_MULTIPLICITY
1758	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2484	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1759	#endif	2485	#endif
1760	if (expect_false (ev_is_active (w)))	2486	if (expect_false (ev_is_active (w)))
1761	return;	2487	return;
1762		2488
1763	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2489	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
		2490
		2491	evpipe_init (EV_A);
		2492
		2493	EV_FREQUENT_CHECK;
1764		2494
1765	{	2495	{
1766	#ifndef _WIN32	2496	#ifndef _WIN32
1767	sigset_t full, prev;	2497	sigset_t full, prev;
1768	sigfillset (&full);	2498	sigfillset (&full);
1769	sigprocmask (SIG_SETMASK, &full, &prev);	2499	sigprocmask (SIG_SETMASK, &full, &prev);
1770	#endif	2500	#endif
1771		2501
1772	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2502	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
1773		2503
1774	#ifndef _WIN32	2504	#ifndef _WIN32
1775	sigprocmask (SIG_SETMASK, &prev, 0);	2505	sigprocmask (SIG_SETMASK, &prev, 0);
1776	#endif	2506	#endif
1777	}	2507	}
…		…
1780	wlist_add (&signals [w->signum - 1].head, (WL)w);	2510	wlist_add (&signals [w->signum - 1].head, (WL)w);
1781		2511
1782	if (!((WL)w)->next)	2512	if (!((WL)w)->next)
1783	{	2513	{
1784	#if _WIN32	2514	#if _WIN32
1785	signal (w->signum, sighandler);	2515	signal (w->signum, ev_sighandler);
1786	#else	2516	#else
1787	struct sigaction sa;	2517	struct sigaction sa;
1788	sa.sa_handler = sighandler;	2518	sa.sa_handler = ev_sighandler;
1789	sigfillset (&sa.sa_mask);	2519	sigfillset (&sa.sa_mask);
1790	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2520	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1791	sigaction (w->signum, &sa, 0);	2521	sigaction (w->signum, &sa, 0);
1792	#endif	2522	#endif
1793	}	2523	}
		2524
		2525	EV_FREQUENT_CHECK;
1794	}	2526	}
1795		2527
1796	void noinline	2528	void noinline
1797	ev_signal_stop (EV_P_ ev_signal *w)	2529	ev_signal_stop (EV_P_ ev_signal *w)
1798	{	2530	{
1799	clear_pending (EV_A_ (W)w);	2531	clear_pending (EV_A_ (W)w);
1800	if (expect_false (!ev_is_active (w)))	2532	if (expect_false (!ev_is_active (w)))
1801	return;	2533	return;
1802		2534
		2535	EV_FREQUENT_CHECK;
		2536
1803	wlist_del (&signals [w->signum - 1].head, (WL)w);	2537	wlist_del (&signals [w->signum - 1].head, (WL)w);
1804	ev_stop (EV_A_ (W)w);	2538	ev_stop (EV_A_ (W)w);
1805		2539
1806	if (!signals [w->signum - 1].head)	2540	if (!signals [w->signum - 1].head)
1807	signal (w->signum, SIG_DFL);	2541	signal (w->signum, SIG_DFL);
		2542
		2543	EV_FREQUENT_CHECK;
1808	}	2544	}
1809		2545
1810	void	2546	void
1811	ev_child_start (EV_P_ ev_child *w)	2547	ev_child_start (EV_P_ ev_child *w)
1812	{	2548	{
1813	#if EV_MULTIPLICITY	2549	#if EV_MULTIPLICITY
1814	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2550	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1815	#endif	2551	#endif
1816	if (expect_false (ev_is_active (w)))	2552	if (expect_false (ev_is_active (w)))
1817	return;	2553	return;
1818		2554
		2555	EV_FREQUENT_CHECK;
		2556
1819	ev_start (EV_A_ (W)w, 1);	2557	ev_start (EV_A_ (W)w, 1);
1820	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2558	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2559
		2560	EV_FREQUENT_CHECK;
1821	}	2561	}
1822		2562
1823	void	2563	void
1824	ev_child_stop (EV_P_ ev_child *w)	2564	ev_child_stop (EV_P_ ev_child *w)
1825	{	2565	{
1826	clear_pending (EV_A_ (W)w);	2566	clear_pending (EV_A_ (W)w);
1827	if (expect_false (!ev_is_active (w)))	2567	if (expect_false (!ev_is_active (w)))
1828	return;	2568	return;
1829		2569
		2570	EV_FREQUENT_CHECK;
		2571
1830	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2572	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1831	ev_stop (EV_A_ (W)w);	2573	ev_stop (EV_A_ (W)w);
		2574
		2575	EV_FREQUENT_CHECK;
1832	}	2576	}
1833		2577
1834	#if EV_STAT_ENABLE	2578	#if EV_STAT_ENABLE
1835		2579
1836	# ifdef _WIN32	2580	# ifdef _WIN32
1837	# undef lstat	2581	# undef lstat
1838	# define lstat(a,b) _stati64 (a,b)	2582	# define lstat(a,b) _stati64 (a,b)
1839	# endif	2583	# endif
1840		2584
1841	#define DEF_STAT_INTERVAL 5.0074891	2585	#define DEF_STAT_INTERVAL 5.0074891
		2586	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1842	#define MIN_STAT_INTERVAL 0.1074891	2587	#define MIN_STAT_INTERVAL 0.1074891
1843		2588
1844	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2589	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1845		2590
1846	#if EV_USE_INOTIFY	2591	#if EV_USE_INOTIFY
1847	# define EV_INOTIFY_BUFSIZE 8192	2592	# define EV_INOTIFY_BUFSIZE 8192
…		…
1851	{	2596	{
1852	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);	2597	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);
1853		2598
1854	if (w->wd < 0)	2599	if (w->wd < 0)
1855	{	2600	{
		2601	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1856	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2602	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1857		2603
1858	/* monitor some parent directory for speedup hints */	2604	/* monitor some parent directory for speedup hints */
		2605	/* note that exceeding the hardcoded path limit is not a correctness issue, */
		2606	/* but an efficiency issue only */
1859	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2607	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1860	{	2608	{
1861	char path [4096];	2609	char path [4096];
1862	strcpy (path, w->path);	2610	strcpy (path, w->path);
1863		2611
…		…
1866	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2614	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1867	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2615	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1868		2616
1869	char *pend = strrchr (path, '/');	2617	char *pend = strrchr (path, '/');
1870		2618
1871	if (!pend)	2619	if (!pend || pend == path)
1872	break; /* whoops, no '/', complain to your admin */	2620	break;
1873		2621
1874	*pend = 0;	2622	*pend = 0;
1875	w->wd = inotify_add_watch (fs_fd, path, mask);	2623	w->wd = inotify_add_watch (fs_fd, path, mask);
1876	}	2624	}
1877	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2625	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1878	}	2626	}
1879	}	2627	}
1880	else
1881	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1882		2628
1883	if (w->wd >= 0)	2629	if (w->wd >= 0)
		2630	{
1884	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2631	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2632
		2633	/* now local changes will be tracked by inotify, but remote changes won't */
		2634	/* unless the filesystem it known to be local, we therefore still poll */
		2635	/* also do poll on <2.6.25, but with normal frequency */
		2636	struct statfs sfs;
		2637
		2638	if (fs_2625 && !statfs (w->path, &sfs))
		2639	if (sfs.f_type == 0x1373 /* devfs */
		2640	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2641	|| sfs.f_type == 0x3153464a /* jfs */
		2642	|| sfs.f_type == 0x52654973 /* reiser3 */
		2643	|| sfs.f_type == 0x01021994 /* tempfs */
		2644	|| sfs.f_type == 0x58465342 /* xfs */)
		2645	return;
		2646
		2647	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2648	ev_timer_again (EV_A_ &w->timer);
		2649	}
1885	}	2650	}
1886		2651
1887	static void noinline	2652	static void noinline
1888	infy_del (EV_P_ ev_stat *w)	2653	infy_del (EV_P_ ev_stat *w)
1889	{	2654	{
…		…
1903		2668
1904	static void noinline	2669	static void noinline
1905	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2670	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1906	{	2671	{
1907	if (slot < 0)	2672	if (slot < 0)
1908	/* overflow, need to check for all hahs slots */	2673	/* overflow, need to check for all hash slots */
1909	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2674	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1910	infy_wd (EV_A_ slot, wd, ev);	2675	infy_wd (EV_A_ slot, wd, ev);
1911	else	2676	else
1912	{	2677	{
1913	WL w_;	2678	WL w_;
…		…
1919		2684
1920	if (w->wd == wd || wd == -1)	2685	if (w->wd == wd || wd == -1)
1921	{	2686	{
1922	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2687	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1923	{	2688	{
		2689	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1924	w->wd = -1;	2690	w->wd = -1;
1925	infy_add (EV_A_ w); /* re-add, no matter what */	2691	infy_add (EV_A_ w); /* re-add, no matter what */
1926	}	2692	}
1927		2693
1928	stat_timer_cb (EV_A_ &w->timer, 0);	2694	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
1941		2707
1942	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2708	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1943	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2709	infy_wd (EV_A_ ev->wd, ev->wd, ev);
1944	}	2710	}
1945		2711
1946	void inline_size	2712	inline_size void
		2713	check_2625 (EV_P)
		2714	{
		2715	/* kernels < 2.6.25 are borked
		2716	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2717	*/
		2718	struct utsname buf;
		2719	int major, minor, micro;
		2720
		2721	if (uname (&buf))
		2722	return;
		2723
		2724	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2725	return;
		2726
		2727	if (major < 2
		2728	|| (major == 2 && minor < 6)
		2729	|| (major == 2 && minor == 6 && micro < 25))
		2730	return;
		2731
		2732	fs_2625 = 1;
		2733	}
		2734
		2735	inline_size void
1947	infy_init (EV_P)	2736	infy_init (EV_P)
1948	{	2737	{
1949	if (fs_fd != -2)	2738	if (fs_fd != -2)
1950	return;	2739	return;
		2740
		2741	fs_fd = -1;
		2742
		2743	check_2625 (EV_A);
1951		2744
1952	fs_fd = inotify_init ();	2745	fs_fd = inotify_init ();
1953		2746
1954	if (fs_fd >= 0)	2747	if (fs_fd >= 0)
1955	{	2748	{
…		…
1957	ev_set_priority (&fs_w, EV_MAXPRI);	2750	ev_set_priority (&fs_w, EV_MAXPRI);
1958	ev_io_start (EV_A_ &fs_w);	2751	ev_io_start (EV_A_ &fs_w);
1959	}	2752	}
1960	}	2753	}
1961		2754
1962	void inline_size	2755	inline_size void
1963	infy_fork (EV_P)	2756	infy_fork (EV_P)
1964	{	2757	{
1965	int slot;	2758	int slot;
1966		2759
1967	if (fs_fd < 0)	2760	if (fs_fd < 0)
…		…
1983	w->wd = -1;	2776	w->wd = -1;
1984		2777
1985	if (fs_fd >= 0)	2778	if (fs_fd >= 0)
1986	infy_add (EV_A_ w); /* re-add, no matter what */	2779	infy_add (EV_A_ w); /* re-add, no matter what */
1987	else	2780	else
1988	ev_timer_start (EV_A_ &w->timer);	2781	ev_timer_again (EV_A_ &w->timer);
1989	}	2782	}
1990
1991	}	2783	}
1992	}	2784	}
1993		2785
		2786	#endif
		2787
		2788	#ifdef _WIN32
		2789	# define EV_LSTAT(p,b) _stati64 (p, b)
		2790	#else
		2791	# define EV_LSTAT(p,b) lstat (p, b)
1994	#endif	2792	#endif
1995		2793
1996	void	2794	void
1997	ev_stat_stat (EV_P_ ev_stat *w)	2795	ev_stat_stat (EV_P_ ev_stat *w)
1998	{	2796	{
…		…
2025	|| w->prev.st_atime != w->attr.st_atime	2823	|| w->prev.st_atime != w->attr.st_atime
2026	|| w->prev.st_mtime != w->attr.st_mtime	2824	|| w->prev.st_mtime != w->attr.st_mtime
2027	|| w->prev.st_ctime != w->attr.st_ctime	2825	|| w->prev.st_ctime != w->attr.st_ctime
2028	) {	2826	) {
2029	#if EV_USE_INOTIFY	2827	#if EV_USE_INOTIFY
		2828	if (fs_fd >= 0)
		2829	{
2030	infy_del (EV_A_ w);	2830	infy_del (EV_A_ w);
2031	infy_add (EV_A_ w);	2831	infy_add (EV_A_ w);
2032	ev_stat_stat (EV_A_ w); /* avoid race... */	2832	ev_stat_stat (EV_A_ w); /* avoid race... */
		2833	}
2033	#endif	2834	#endif
2034		2835
2035	ev_feed_event (EV_A_ w, EV_STAT);	2836	ev_feed_event (EV_A_ w, EV_STAT);
2036	}	2837	}
2037	}	2838	}
…		…
2040	ev_stat_start (EV_P_ ev_stat *w)	2841	ev_stat_start (EV_P_ ev_stat *w)
2041	{	2842	{
2042	if (expect_false (ev_is_active (w)))	2843	if (expect_false (ev_is_active (w)))
2043	return;	2844	return;
2044		2845
2045	/* since we use memcmp, we need to clear any padding data etc. */
2046	memset (&w->prev, 0, sizeof (ev_statdata));
2047	memset (&w->attr, 0, sizeof (ev_statdata));
2048
2049	ev_stat_stat (EV_A_ w);	2846	ev_stat_stat (EV_A_ w);
2050		2847
		2848	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2051	if (w->interval < MIN_STAT_INTERVAL)	2849	w->interval = MIN_STAT_INTERVAL;
2052	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2053		2850
2054	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2851	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2055	ev_set_priority (&w->timer, ev_priority (w));	2852	ev_set_priority (&w->timer, ev_priority (w));
2056		2853
2057	#if EV_USE_INOTIFY	2854	#if EV_USE_INOTIFY
2058	infy_init (EV_A);	2855	infy_init (EV_A);
2059		2856
2060	if (fs_fd >= 0)	2857	if (fs_fd >= 0)
2061	infy_add (EV_A_ w);	2858	infy_add (EV_A_ w);
2062	else	2859	else
2063	#endif	2860	#endif
2064	ev_timer_start (EV_A_ &w->timer);	2861	ev_timer_again (EV_A_ &w->timer);
2065		2862
2066	ev_start (EV_A_ (W)w, 1);	2863	ev_start (EV_A_ (W)w, 1);
		2864
		2865	EV_FREQUENT_CHECK;
2067	}	2866	}
2068		2867
2069	void	2868	void
2070	ev_stat_stop (EV_P_ ev_stat *w)	2869	ev_stat_stop (EV_P_ ev_stat *w)
2071	{	2870	{
2072	clear_pending (EV_A_ (W)w);	2871	clear_pending (EV_A_ (W)w);
2073	if (expect_false (!ev_is_active (w)))	2872	if (expect_false (!ev_is_active (w)))
2074	return;	2873	return;
2075		2874
		2875	EV_FREQUENT_CHECK;
		2876
2076	#if EV_USE_INOTIFY	2877	#if EV_USE_INOTIFY
2077	infy_del (EV_A_ w);	2878	infy_del (EV_A_ w);
2078	#endif	2879	#endif
2079	ev_timer_stop (EV_A_ &w->timer);	2880	ev_timer_stop (EV_A_ &w->timer);
2080		2881
2081	ev_stop (EV_A_ (W)w);	2882	ev_stop (EV_A_ (W)w);
		2883
		2884	EV_FREQUENT_CHECK;
2082	}	2885	}
2083	#endif	2886	#endif
2084		2887
2085	#if EV_IDLE_ENABLE	2888	#if EV_IDLE_ENABLE
2086	void	2889	void
…		…
2088	{	2891	{
2089	if (expect_false (ev_is_active (w)))	2892	if (expect_false (ev_is_active (w)))
2090	return;	2893	return;
2091		2894
2092	pri_adjust (EV_A_ (W)w);	2895	pri_adjust (EV_A_ (W)w);
		2896
		2897	EV_FREQUENT_CHECK;
2093		2898
2094	{	2899	{
2095	int active = ++idlecnt [ABSPRI (w)];	2900	int active = ++idlecnt [ABSPRI (w)];
2096		2901
2097	++idleall;	2902	++idleall;
2098	ev_start (EV_A_ (W)w, active);	2903	ev_start (EV_A_ (W)w, active);
2099		2904
2100	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	2905	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2101	idles [ABSPRI (w)][active - 1] = w;	2906	idles [ABSPRI (w)][active - 1] = w;
2102	}	2907	}
		2908
		2909	EV_FREQUENT_CHECK;
2103	}	2910	}
2104		2911
2105	void	2912	void
2106	ev_idle_stop (EV_P_ ev_idle *w)	2913	ev_idle_stop (EV_P_ ev_idle *w)
2107	{	2914	{
2108	clear_pending (EV_A_ (W)w);	2915	clear_pending (EV_A_ (W)w);
2109	if (expect_false (!ev_is_active (w)))	2916	if (expect_false (!ev_is_active (w)))
2110	return;	2917	return;
2111		2918
		2919	EV_FREQUENT_CHECK;
		2920
2112	{	2921	{
2113	int active = ((W)w)->active;	2922	int active = ev_active (w);
2114		2923
2115	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2924	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2116	((W)idles [ABSPRI (w)][active - 1])->active = active;	2925	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2117		2926
2118	ev_stop (EV_A_ (W)w);	2927	ev_stop (EV_A_ (W)w);
2119	--idleall;	2928	--idleall;
2120	}	2929	}
		2930
		2931	EV_FREQUENT_CHECK;
2121	}	2932	}
2122	#endif	2933	#endif
2123		2934
2124	void	2935	void
2125	ev_prepare_start (EV_P_ ev_prepare *w)	2936	ev_prepare_start (EV_P_ ev_prepare *w)
2126	{	2937	{
2127	if (expect_false (ev_is_active (w)))	2938	if (expect_false (ev_is_active (w)))
2128	return;	2939	return;
		2940
		2941	EV_FREQUENT_CHECK;
2129		2942
2130	ev_start (EV_A_ (W)w, ++preparecnt);	2943	ev_start (EV_A_ (W)w, ++preparecnt);
2131	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	2944	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2132	prepares [preparecnt - 1] = w;	2945	prepares [preparecnt - 1] = w;
		2946
		2947	EV_FREQUENT_CHECK;
2133	}	2948	}
2134		2949
2135	void	2950	void
2136	ev_prepare_stop (EV_P_ ev_prepare *w)	2951	ev_prepare_stop (EV_P_ ev_prepare *w)
2137	{	2952	{
2138	clear_pending (EV_A_ (W)w);	2953	clear_pending (EV_A_ (W)w);
2139	if (expect_false (!ev_is_active (w)))	2954	if (expect_false (!ev_is_active (w)))
2140	return;	2955	return;
2141		2956
		2957	EV_FREQUENT_CHECK;
		2958
2142	{	2959	{
2143	int active = ((W)w)->active;	2960	int active = ev_active (w);
		2961
2144	prepares [active - 1] = prepares [--preparecnt];	2962	prepares [active - 1] = prepares [--preparecnt];
2145	((W)prepares [active - 1])->active = active;	2963	ev_active (prepares [active - 1]) = active;
2146	}	2964	}
2147		2965
2148	ev_stop (EV_A_ (W)w);	2966	ev_stop (EV_A_ (W)w);
		2967
		2968	EV_FREQUENT_CHECK;
2149	}	2969	}
2150		2970
2151	void	2971	void
2152	ev_check_start (EV_P_ ev_check *w)	2972	ev_check_start (EV_P_ ev_check *w)
2153	{	2973	{
2154	if (expect_false (ev_is_active (w)))	2974	if (expect_false (ev_is_active (w)))
2155	return;	2975	return;
		2976
		2977	EV_FREQUENT_CHECK;
2156		2978
2157	ev_start (EV_A_ (W)w, ++checkcnt);	2979	ev_start (EV_A_ (W)w, ++checkcnt);
2158	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	2980	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2159	checks [checkcnt - 1] = w;	2981	checks [checkcnt - 1] = w;
		2982
		2983	EV_FREQUENT_CHECK;
2160	}	2984	}
2161		2985
2162	void	2986	void
2163	ev_check_stop (EV_P_ ev_check *w)	2987	ev_check_stop (EV_P_ ev_check *w)
2164	{	2988	{
2165	clear_pending (EV_A_ (W)w);	2989	clear_pending (EV_A_ (W)w);
2166	if (expect_false (!ev_is_active (w)))	2990	if (expect_false (!ev_is_active (w)))
2167	return;	2991	return;
2168		2992
		2993	EV_FREQUENT_CHECK;
		2994
2169	{	2995	{
2170	int active = ((W)w)->active;	2996	int active = ev_active (w);
		2997
2171	checks [active - 1] = checks [--checkcnt];	2998	checks [active - 1] = checks [--checkcnt];
2172	((W)checks [active - 1])->active = active;	2999	ev_active (checks [active - 1]) = active;
2173	}	3000	}
2174		3001
2175	ev_stop (EV_A_ (W)w);	3002	ev_stop (EV_A_ (W)w);
		3003
		3004	EV_FREQUENT_CHECK;
2176	}	3005	}
2177		3006
2178	#if EV_EMBED_ENABLE	3007	#if EV_EMBED_ENABLE
2179	void noinline	3008	void noinline
2180	ev_embed_sweep (EV_P_ ev_embed *w)	3009	ev_embed_sweep (EV_P_ ev_embed *w)
2181	{	3010	{
2182	ev_loop (w->loop, EVLOOP_NONBLOCK);	3011	ev_loop (w->other, EVLOOP_NONBLOCK);
2183	}	3012	}
2184		3013
2185	static void	3014	static void
2186	embed_cb (EV_P_ ev_io *io, int revents)	3015	embed_io_cb (EV_P_ ev_io *io, int revents)
2187	{	3016	{
2188	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	3017	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2189		3018
2190	if (ev_cb (w))	3019	if (ev_cb (w))
2191	ev_feed_event (EV_A_ (W)w, EV_EMBED);	3020	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2192	else	3021	else
2193	ev_embed_sweep (loop, w);	3022	ev_loop (w->other, EVLOOP_NONBLOCK);
2194	}	3023	}
		3024
		3025	static void
		3026	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		3027	{
		3028	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		3029
		3030	{
		3031	struct ev_loop *loop = w->other;
		3032
		3033	while (fdchangecnt)
		3034	{
		3035	fd_reify (EV_A);
		3036	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3037	}
		3038	}
		3039	}
		3040
		3041	static void
		3042	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3043	{
		3044	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3045
		3046	ev_embed_stop (EV_A_ w);
		3047
		3048	{
		3049	struct ev_loop *loop = w->other;
		3050
		3051	ev_loop_fork (EV_A);
		3052	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3053	}
		3054
		3055	ev_embed_start (EV_A_ w);
		3056	}
		3057
		3058	#if 0
		3059	static void
		3060	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		3061	{
		3062	ev_idle_stop (EV_A_ idle);
		3063	}
		3064	#endif
2195		3065
2196	void	3066	void
2197	ev_embed_start (EV_P_ ev_embed *w)	3067	ev_embed_start (EV_P_ ev_embed *w)
2198	{	3068	{
2199	if (expect_false (ev_is_active (w)))	3069	if (expect_false (ev_is_active (w)))
2200	return;	3070	return;
2201		3071
2202	{	3072	{
2203	struct ev_loop *loop = w->loop;	3073	struct ev_loop *loop = w->other;
2204	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3074	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2205	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	3075	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2206	}	3076	}
		3077
		3078	EV_FREQUENT_CHECK;
2207		3079
2208	ev_set_priority (&w->io, ev_priority (w));	3080	ev_set_priority (&w->io, ev_priority (w));
2209	ev_io_start (EV_A_ &w->io);	3081	ev_io_start (EV_A_ &w->io);
2210		3082
		3083	ev_prepare_init (&w->prepare, embed_prepare_cb);
		3084	ev_set_priority (&w->prepare, EV_MINPRI);
		3085	ev_prepare_start (EV_A_ &w->prepare);
		3086
		3087	ev_fork_init (&w->fork, embed_fork_cb);
		3088	ev_fork_start (EV_A_ &w->fork);
		3089
		3090	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		3091
2211	ev_start (EV_A_ (W)w, 1);	3092	ev_start (EV_A_ (W)w, 1);
		3093
		3094	EV_FREQUENT_CHECK;
2212	}	3095	}
2213		3096
2214	void	3097	void
2215	ev_embed_stop (EV_P_ ev_embed *w)	3098	ev_embed_stop (EV_P_ ev_embed *w)
2216	{	3099	{
2217	clear_pending (EV_A_ (W)w);	3100	clear_pending (EV_A_ (W)w);
2218	if (expect_false (!ev_is_active (w)))	3101	if (expect_false (!ev_is_active (w)))
2219	return;	3102	return;
2220		3103
		3104	EV_FREQUENT_CHECK;
		3105
2221	ev_io_stop (EV_A_ &w->io);	3106	ev_io_stop (EV_A_ &w->io);
		3107	ev_prepare_stop (EV_A_ &w->prepare);
		3108	ev_fork_stop (EV_A_ &w->fork);
2222		3109
2223	ev_stop (EV_A_ (W)w);	3110	EV_FREQUENT_CHECK;
2224	}	3111	}
2225	#endif	3112	#endif
2226		3113
2227	#if EV_FORK_ENABLE	3114	#if EV_FORK_ENABLE
2228	void	3115	void
2229	ev_fork_start (EV_P_ ev_fork *w)	3116	ev_fork_start (EV_P_ ev_fork *w)
2230	{	3117	{
2231	if (expect_false (ev_is_active (w)))	3118	if (expect_false (ev_is_active (w)))
2232	return;	3119	return;
		3120
		3121	EV_FREQUENT_CHECK;
2233		3122
2234	ev_start (EV_A_ (W)w, ++forkcnt);	3123	ev_start (EV_A_ (W)w, ++forkcnt);
2235	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3124	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2236	forks [forkcnt - 1] = w;	3125	forks [forkcnt - 1] = w;
		3126
		3127	EV_FREQUENT_CHECK;
2237	}	3128	}
2238		3129
2239	void	3130	void
2240	ev_fork_stop (EV_P_ ev_fork *w)	3131	ev_fork_stop (EV_P_ ev_fork *w)
2241	{	3132	{
2242	clear_pending (EV_A_ (W)w);	3133	clear_pending (EV_A_ (W)w);
2243	if (expect_false (!ev_is_active (w)))	3134	if (expect_false (!ev_is_active (w)))
2244	return;	3135	return;
2245		3136
		3137	EV_FREQUENT_CHECK;
		3138
2246	{	3139	{
2247	int active = ((W)w)->active;	3140	int active = ev_active (w);
		3141
2248	forks [active - 1] = forks [--forkcnt];	3142	forks [active - 1] = forks [--forkcnt];
2249	((W)forks [active - 1])->active = active;	3143	ev_active (forks [active - 1]) = active;
2250	}	3144	}
2251		3145
2252	ev_stop (EV_A_ (W)w);	3146	ev_stop (EV_A_ (W)w);
		3147
		3148	EV_FREQUENT_CHECK;
		3149	}
		3150	#endif
		3151
		3152	#if EV_ASYNC_ENABLE
		3153	void
		3154	ev_async_start (EV_P_ ev_async *w)
		3155	{
		3156	if (expect_false (ev_is_active (w)))
		3157	return;
		3158
		3159	evpipe_init (EV_A);
		3160
		3161	EV_FREQUENT_CHECK;
		3162
		3163	ev_start (EV_A_ (W)w, ++asynccnt);
		3164	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		3165	asyncs [asynccnt - 1] = w;
		3166
		3167	EV_FREQUENT_CHECK;
		3168	}
		3169
		3170	void
		3171	ev_async_stop (EV_P_ ev_async *w)
		3172	{
		3173	clear_pending (EV_A_ (W)w);
		3174	if (expect_false (!ev_is_active (w)))
		3175	return;
		3176
		3177	EV_FREQUENT_CHECK;
		3178
		3179	{
		3180	int active = ev_active (w);
		3181
		3182	asyncs [active - 1] = asyncs [--asynccnt];
		3183	ev_active (asyncs [active - 1]) = active;
		3184	}
		3185
		3186	ev_stop (EV_A_ (W)w);
		3187
		3188	EV_FREQUENT_CHECK;
		3189	}
		3190
		3191	void
		3192	ev_async_send (EV_P_ ev_async *w)
		3193	{
		3194	w->sent = 1;
		3195	evpipe_write (EV_A_ &gotasync);
2253	}	3196	}
2254	#endif	3197	#endif
2255		3198
2256	/*****************************************************************************/	3199	/*****************************************************************************/
2257		3200
…		…
2267	once_cb (EV_P_ struct ev_once *once, int revents)	3210	once_cb (EV_P_ struct ev_once *once, int revents)
2268	{	3211	{
2269	void (*cb)(int revents, void *arg) = once->cb;	3212	void (*cb)(int revents, void *arg) = once->cb;
2270	void *arg = once->arg;	3213	void *arg = once->arg;
2271		3214
2272	ev_io_stop (EV_A_ &once->io);	3215	ev_io_stop (EV_A_ &once->io);
2273	ev_timer_stop (EV_A_ &once->to);	3216	ev_timer_stop (EV_A_ &once->to);
2274	ev_free (once);	3217	ev_free (once);
2275		3218
2276	cb (revents, arg);	3219	cb (revents, arg);
2277	}	3220	}
2278		3221
2279	static void	3222	static void
2280	once_cb_io (EV_P_ ev_io *w, int revents)	3223	once_cb_io (EV_P_ ev_io *w, int revents)
2281	{	3224	{
2282	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3225	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3226
		3227	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2283	}	3228	}
2284		3229
2285	static void	3230	static void
2286	once_cb_to (EV_P_ ev_timer *w, int revents)	3231	once_cb_to (EV_P_ ev_timer *w, int revents)
2287	{	3232	{
2288	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3233	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3234
		3235	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2289	}	3236	}
2290		3237
2291	void	3238	void
2292	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3239	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2293	{	3240	{
…		…
2315	ev_timer_set (&once->to, timeout, 0.);	3262	ev_timer_set (&once->to, timeout, 0.);
2316	ev_timer_start (EV_A_ &once->to);	3263	ev_timer_start (EV_A_ &once->to);
2317	}	3264	}
2318	}	3265	}
2319		3266
		3267	/*****************************************************************************/
		3268
		3269	#if EV_WALK_ENABLE
		3270	void
		3271	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3272	{
		3273	int i, j;
		3274	ev_watcher_list *wl, *wn;
		3275
		3276	if (types & (EV_IO | EV_EMBED))
		3277	for (i = 0; i < anfdmax; ++i)
		3278	for (wl = anfds [i].head; wl; )
		3279	{
		3280	wn = wl->next;
		3281
		3282	#if EV_EMBED_ENABLE
		3283	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3284	{
		3285	if (types & EV_EMBED)
		3286	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3287	}
		3288	else
		3289	#endif
		3290	#if EV_USE_INOTIFY
		3291	if (ev_cb ((ev_io *)wl) == infy_cb)
		3292	;
		3293	else
		3294	#endif
		3295	if ((ev_io *)wl != &pipe_w)
		3296	if (types & EV_IO)
		3297	cb (EV_A_ EV_IO, wl);
		3298
		3299	wl = wn;
		3300	}
		3301
		3302	if (types & (EV_TIMER | EV_STAT))
		3303	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3304	#if EV_STAT_ENABLE
		3305	/*TODO: timer is not always active*/
		3306	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3307	{
		3308	if (types & EV_STAT)
		3309	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3310	}
		3311	else
		3312	#endif
		3313	if (types & EV_TIMER)
		3314	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3315
		3316	#if EV_PERIODIC_ENABLE
		3317	if (types & EV_PERIODIC)
		3318	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3319	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3320	#endif
		3321
		3322	#if EV_IDLE_ENABLE
		3323	if (types & EV_IDLE)
		3324	for (j = NUMPRI; i--; )
		3325	for (i = idlecnt [j]; i--; )
		3326	cb (EV_A_ EV_IDLE, idles [j][i]);
		3327	#endif
		3328
		3329	#if EV_FORK_ENABLE
		3330	if (types & EV_FORK)
		3331	for (i = forkcnt; i--; )
		3332	if (ev_cb (forks [i]) != embed_fork_cb)
		3333	cb (EV_A_ EV_FORK, forks [i]);
		3334	#endif
		3335
		3336	#if EV_ASYNC_ENABLE
		3337	if (types & EV_ASYNC)
		3338	for (i = asynccnt; i--; )
		3339	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3340	#endif
		3341
		3342	if (types & EV_PREPARE)
		3343	for (i = preparecnt; i--; )
		3344	#if EV_EMBED_ENABLE
		3345	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3346	#endif
		3347	cb (EV_A_ EV_PREPARE, prepares [i]);
		3348
		3349	if (types & EV_CHECK)
		3350	for (i = checkcnt; i--; )
		3351	cb (EV_A_ EV_CHECK, checks [i]);
		3352
		3353	if (types & EV_SIGNAL)
		3354	for (i = 0; i < signalmax; ++i)
		3355	for (wl = signals [i].head; wl; )
		3356	{
		3357	wn = wl->next;
		3358	cb (EV_A_ EV_SIGNAL, wl);
		3359	wl = wn;
		3360	}
		3361
		3362	if (types & EV_CHILD)
		3363	for (i = EV_PID_HASHSIZE; i--; )
		3364	for (wl = childs [i]; wl; )
		3365	{
		3366	wn = wl->next;
		3367	cb (EV_A_ EV_CHILD, wl);
		3368	wl = wn;
		3369	}
		3370	/* EV_STAT 0x00001000 /* stat data changed */
		3371	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3372	}
		3373	#endif
		3374
		3375	#if EV_MULTIPLICITY
		3376	#include "ev_wrap.h"
		3377	#endif
		3378
2320	#ifdef __cplusplus	3379	#ifdef __cplusplus
2321	}	3380	}
2322	#endif	3381	#endif
2323		3382

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