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Comparing libev/ev.c (file contents):
Revision 1.194 by root, Sat Dec 22 07:03:31 2007 UTC vs.
Revision 1.295 by root, Wed Jul 8 04:29:31 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
…		…
110	# else	133	# else
111	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
112	# endif	135	# endif
113	# endif	136	# endif
114		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
115	#endif	146	#endif
116		147
117	#include <math.h>	148	#include <math.h>
118	#include <stdlib.h>	149	#include <stdlib.h>
119	#include <fcntl.h>	150	#include <fcntl.h>
…		…
137	#ifndef _WIN32	168	#ifndef _WIN32
138	# include <sys/time.h>	169	# include <sys/time.h>
139	# include <sys/wait.h>	170	# include <sys/wait.h>
140	# include <unistd.h>	171	# include <unistd.h>
141	#else	172	#else
		173	# include <io.h>
142	# define WIN32_LEAN_AND_MEAN	174	# define WIN32_LEAN_AND_MEAN
143	# include <windows.h>	175	# include <windows.h>
144	# ifndef EV_SELECT_IS_WINSOCKET	176	# ifndef EV_SELECT_IS_WINSOCKET
145	# define EV_SELECT_IS_WINSOCKET 1	177	# define EV_SELECT_IS_WINSOCKET 1
146	# endif	178	# endif
147	#endif	179	#endif
148		180
149	/**/	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
150		190
151	#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
152	# define EV_USE_MONOTONIC 0	195	# define EV_USE_MONOTONIC 0
		196	# endif
153	#endif	197	#endif
154		198
155	#ifndef EV_USE_REALTIME	199	#ifndef EV_USE_REALTIME
156	# define EV_USE_REALTIME 0	200	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
157	#endif	201	#endif
158		202
159	#ifndef EV_USE_NANOSLEEP	203	#ifndef EV_USE_NANOSLEEP
		204	# if _POSIX_C_SOURCE >= 199309L
		205	# define EV_USE_NANOSLEEP 1
		206	# else
160	# define EV_USE_NANOSLEEP 0	207	# define EV_USE_NANOSLEEP 0
		208	# endif
161	#endif	209	#endif
162		210
163	#ifndef EV_USE_SELECT	211	#ifndef EV_USE_SELECT
164	# define EV_USE_SELECT 1	212	# define EV_USE_SELECT 1
165	#endif	213	#endif
…		…
171	# define EV_USE_POLL 1	219	# define EV_USE_POLL 1
172	# endif	220	# endif
173	#endif	221	#endif
174		222
175	#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
176	# define EV_USE_EPOLL 0	227	# define EV_USE_EPOLL 0
		228	# endif
177	#endif	229	#endif
178		230
179	#ifndef EV_USE_KQUEUE	231	#ifndef EV_USE_KQUEUE
180	# define EV_USE_KQUEUE 0	232	# define EV_USE_KQUEUE 0
181	#endif	233	#endif
…		…
183	#ifndef EV_USE_PORT	235	#ifndef EV_USE_PORT
184	# define EV_USE_PORT 0	236	# define EV_USE_PORT 0
185	#endif	237	#endif
186		238
187	#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
188	# define EV_USE_INOTIFY 0	243	# define EV_USE_INOTIFY 0
		244	# endif
189	#endif	245	#endif
190		246
191	#ifndef EV_PID_HASHSIZE	247	#ifndef EV_PID_HASHSIZE
192	# if EV_MINIMAL	248	# if EV_MINIMAL
193	# define EV_PID_HASHSIZE 1	249	# define EV_PID_HASHSIZE 1
…		…
202	# else	258	# else
203	# define EV_INOTIFY_HASHSIZE 16	259	# define EV_INOTIFY_HASHSIZE 16
204	# endif	260	# endif
205	#endif	261	#endif
206		262
207	/**/	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 */
208		304
209	#ifndef CLOCK_MONOTONIC	305	#ifndef CLOCK_MONOTONIC
210	# undef EV_USE_MONOTONIC	306	# undef EV_USE_MONOTONIC
211	# define EV_USE_MONOTONIC 0	307	# define EV_USE_MONOTONIC 0
212	#endif	308	#endif
…		…
226	# include <sys/select.h>	322	# include <sys/select.h>
227	# endif	323	# endif
228	#endif	324	#endif
229		325
230	#if EV_USE_INOTIFY	326	#if EV_USE_INOTIFY
		327	# include <sys/utsname.h>
		328	# include <sys/statfs.h>
231	# 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
232	#endif	335	#endif
233		336
234	#if EV_SELECT_IS_WINSOCKET	337	#if EV_SELECT_IS_WINSOCKET
235	# include <winsock.h>	338	# include <winsock.h>
236	#endif	339	#endif
237		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
238	/**/	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
239		360
240	/*	361	/*
241	* This is used to avoid floating point rounding problems.	362	* This is used to avoid floating point rounding problems.
242	* It is added to ev_rt_now when scheduling periodics	363	* It is added to ev_rt_now when scheduling periodics
243	* to ensure progress, time-wise, even when rounding	364	* to ensure progress, time-wise, even when rounding
…		…
255	# define expect(expr,value) __builtin_expect ((expr),(value))	376	# define expect(expr,value) __builtin_expect ((expr),(value))
256	# define noinline __attribute__ ((noinline))	377	# define noinline __attribute__ ((noinline))
257	#else	378	#else
258	# define expect(expr,value) (expr)	379	# define expect(expr,value) (expr)
259	# define noinline	380	# define noinline
260	# if __STDC_VERSION__ < 199901L	381	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
261	# define inline	382	# define inline
262	# endif	383	# endif
263	#endif	384	#endif
264		385
265	#define expect_false(expr) expect ((expr) != 0, 0)	386	#define expect_false(expr) expect ((expr) != 0, 0)
…		…
270	# define inline_speed static noinline	391	# define inline_speed static noinline
271	#else	392	#else
272	# define inline_speed static inline	393	# define inline_speed static inline
273	#endif	394	#endif
274		395
275	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	396	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		397
		398	#if EV_MINPRI == EV_MAXPRI
		399	# define ABSPRI(w) (((W)w), 0)
		400	#else
276	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	401	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		402	#endif
277		403
278	#define EMPTY /* required for microsofts broken pseudo-c compiler */	404	#define EMPTY /* required for microsofts broken pseudo-c compiler */
279	#define EMPTY2(a,b) /* used to suppress some warnings */	405	#define EMPTY2(a,b) /* used to suppress some warnings */
280		406
281	typedef ev_watcher *W;	407	typedef ev_watcher *W;
282	typedef ev_watcher_list *WL;	408	typedef ev_watcher_list *WL;
283	typedef ev_watcher_time *WT;	409	typedef ev_watcher_time *WT;
284		410
		411	#define ev_active(w) ((W)(w))->active
		412	#define ev_at(w) ((WT)(w))->at
		413
		414	#if EV_USE_REALTIME
285	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	415	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
286	/* giving it a reasonably high chance of working on typical architetcures */	416	/* giving it a reasonably high chance of working on typical architetcures */
		417	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		418	#endif
		419
		420	#if EV_USE_MONOTONIC
287	static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	421	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		422	#endif
288		423
289	#ifdef _WIN32	424	#ifdef _WIN32
290	# include "ev_win32.c"	425	# include "ev_win32.c"
291	#endif	426	#endif
292		427
…		…
299	{	434	{
300	syserr_cb = cb;	435	syserr_cb = cb;
301	}	436	}
302		437
303	static void noinline	438	static void noinline
304	syserr (const char *msg)	439	ev_syserr (const char *msg)
305	{	440	{
306	if (!msg)	441	if (!msg)
307	msg = "(libev) system error";	442	msg = "(libev) system error";
308		443
309	if (syserr_cb)	444	if (syserr_cb)
…		…
313	perror (msg);	448	perror (msg);
314	abort ();	449	abort ();
315	}	450	}
316	}	451	}
317		452
		453	static void *
		454	ev_realloc_emul (void *ptr, long size)
		455	{
		456	/* some systems, notably openbsd and darwin, fail to properly
		457	* implement realloc (x, 0) (as required by both ansi c-98 and
		458	* the single unix specification, so work around them here.
		459	*/
		460
		461	if (size)
		462	return realloc (ptr, size);
		463
		464	free (ptr);
		465	return 0;
		466	}
		467
318	static void *(*alloc)(void *ptr, long size);	468	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
319		469
320	void	470	void
321	ev_set_allocator (void *(*cb)(void *ptr, long size))	471	ev_set_allocator (void *(*cb)(void *ptr, long size))
322	{	472	{
323	alloc = cb;	473	alloc = cb;
324	}	474	}
325		475
326	inline_speed void *	476	inline_speed void *
327	ev_realloc (void *ptr, long size)	477	ev_realloc (void *ptr, long size)
328	{	478	{
329	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	479	ptr = alloc (ptr, size);
330		480
331	if (!ptr && size)	481	if (!ptr && size)
332	{	482	{
333	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	483	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
334	abort ();	484	abort ();
…		…
340	#define ev_malloc(size) ev_realloc (0, (size))	490	#define ev_malloc(size) ev_realloc (0, (size))
341	#define ev_free(ptr) ev_realloc ((ptr), 0)	491	#define ev_free(ptr) ev_realloc ((ptr), 0)
342		492
343	/*****************************************************************************/	493	/*****************************************************************************/
344		494
		495	/* file descriptor info structure */
345	typedef struct	496	typedef struct
346	{	497	{
347	WL head;	498	WL head;
348	unsigned char events;	499	unsigned char events; /* the events watched for */
		500	unsigned char reify; /* flag set when this ANFD needs reification */
		501	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
349	unsigned char reify;	502	unsigned char unused;
		503	#if EV_USE_EPOLL
		504	unsigned int egen; /* generation counter to counter epoll bugs */
		505	#endif
350	#if EV_SELECT_IS_WINSOCKET	506	#if EV_SELECT_IS_WINSOCKET
351	SOCKET handle;	507	SOCKET handle;
352	#endif	508	#endif
353	} ANFD;	509	} ANFD;
354		510
		511	/* stores the pending event set for a given watcher */
355	typedef struct	512	typedef struct
356	{	513	{
357	W w;	514	W w;
358	int events;	515	int events; /* the pending event set for the given watcher */
359	} ANPENDING;	516	} ANPENDING;
360		517
361	#if EV_USE_INOTIFY	518	#if EV_USE_INOTIFY
		519	/* hash table entry per inotify-id */
362	typedef struct	520	typedef struct
363	{	521	{
364	WL head;	522	WL head;
365	} ANFS;	523	} ANFS;
		524	#endif
		525
		526	/* Heap Entry */
		527	#if EV_HEAP_CACHE_AT
		528	/* a heap element */
		529	typedef struct {
		530	ev_tstamp at;
		531	WT w;
		532	} ANHE;
		533
		534	#define ANHE_w(he) (he).w /* access watcher, read-write */
		535	#define ANHE_at(he) (he).at /* access cached at, read-only */
		536	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		537	#else
		538	/* a heap element */
		539	typedef WT ANHE;
		540
		541	#define ANHE_w(he) (he)
		542	#define ANHE_at(he) (he)->at
		543	#define ANHE_at_cache(he)
366	#endif	544	#endif
367		545
368	#if EV_MULTIPLICITY	546	#if EV_MULTIPLICITY
369		547
370	struct ev_loop	548	struct ev_loop
…		…
391		569
392	#endif	570	#endif
393		571
394	/*****************************************************************************/	572	/*****************************************************************************/
395		573
		574	#ifndef EV_HAVE_EV_TIME
396	ev_tstamp	575	ev_tstamp
397	ev_time (void)	576	ev_time (void)
398	{	577	{
399	#if EV_USE_REALTIME	578	#if EV_USE_REALTIME
		579	if (expect_true (have_realtime))
		580	{
400	struct timespec ts;	581	struct timespec ts;
401	clock_gettime (CLOCK_REALTIME, &ts);	582	clock_gettime (CLOCK_REALTIME, &ts);
402	return ts.tv_sec + ts.tv_nsec * 1e-9;	583	return ts.tv_sec + ts.tv_nsec * 1e-9;
403	#else	584	}
		585	#endif
		586
404	struct timeval tv;	587	struct timeval tv;
405	gettimeofday (&tv, 0);	588	gettimeofday (&tv, 0);
406	return tv.tv_sec + tv.tv_usec * 1e-6;	589	return tv.tv_sec + tv.tv_usec * 1e-6;
407	#endif
408	}	590	}
		591	#endif
409		592
410	ev_tstamp inline_size	593	inline_size ev_tstamp
411	get_clock (void)	594	get_clock (void)
412	{	595	{
413	#if EV_USE_MONOTONIC	596	#if EV_USE_MONOTONIC
414	if (expect_true (have_monotonic))	597	if (expect_true (have_monotonic))
415	{	598	{
…		…
441	ts.tv_sec = (time_t)delay;	624	ts.tv_sec = (time_t)delay;
442	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);	625	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
443		626
444	nanosleep (&ts, 0);	627	nanosleep (&ts, 0);
445	#elif defined(_WIN32)	628	#elif defined(_WIN32)
446	Sleep (delay * 1e3);	629	Sleep ((unsigned long)(delay * 1e3));
447	#else	630	#else
448	struct timeval tv;	631	struct timeval tv;
449		632
450	tv.tv_sec = (time_t)delay;	633	tv.tv_sec = (time_t)delay;
451	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	634	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
452		635
		636	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		637	/* somehting not guaranteed by newer posix versions, but guaranteed */
		638	/* by older ones */
453	select (0, 0, 0, 0, &tv);	639	select (0, 0, 0, 0, &tv);
454	#endif	640	#endif
455	}	641	}
456	}	642	}
457		643
458	/*****************************************************************************/	644	/*****************************************************************************/
459		645
460	int inline_size	646	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		647
		648	/* find a suitable new size for the given array, */
		649	/* hopefully by rounding to a ncie-to-malloc size */
		650	inline_size int
461	array_nextsize (int elem, int cur, int cnt)	651	array_nextsize (int elem, int cur, int cnt)
462	{	652	{
463	int ncur = cur + 1;	653	int ncur = cur + 1;
464		654
465	do	655	do
466	ncur <<= 1;	656	ncur <<= 1;
467	while (cnt > ncur);	657	while (cnt > ncur);
468		658
469	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	659	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
470	if (elem * ncur > 4096)	660	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
471	{	661	{
472	ncur *= elem;	662	ncur *= elem;
473	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	663	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
474	ncur = ncur - sizeof (void *) * 4;	664	ncur = ncur - sizeof (void *) * 4;
475	ncur /= elem;	665	ncur /= elem;
476	}	666	}
477		667
478	return ncur;	668	return ncur;
…		…
482	array_realloc (int elem, void *base, int *cur, int cnt)	672	array_realloc (int elem, void *base, int *cur, int cnt)
483	{	673	{
484	*cur = array_nextsize (elem, *cur, cnt);	674	*cur = array_nextsize (elem, *cur, cnt);
485	return ev_realloc (base, elem * *cur);	675	return ev_realloc (base, elem * *cur);
486	}	676	}
		677
		678	#define array_init_zero(base,count) \
		679	memset ((void *)(base), 0, sizeof (*(base)) * (count))
487		680
488	#define array_needsize(type,base,cur,cnt,init) \	681	#define array_needsize(type,base,cur,cnt,init) \
489	if (expect_false ((cnt) > (cur))) \	682	if (expect_false ((cnt) > (cur))) \
490	{ \	683	{ \
491	int ocur_ = (cur); \	684	int ocur_ = (cur); \
…		…
503	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	696	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
504	}	697	}
505	#endif	698	#endif
506		699
507	#define array_free(stem, idx) \	700	#define array_free(stem, idx) \
508	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	701	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
509		702
510	/*****************************************************************************/	703	/*****************************************************************************/
		704
		705	/* dummy callback for pending events */
		706	static void noinline
		707	pendingcb (EV_P_ ev_prepare *w, int revents)
		708	{
		709	}
511		710
512	void noinline	711	void noinline
513	ev_feed_event (EV_P_ void *w, int revents)	712	ev_feed_event (EV_P_ void *w, int revents)
514	{	713	{
515	W w_ = (W)w;	714	W w_ = (W)w;
…		…
524	pendings [pri][w_->pending - 1].w = w_;	723	pendings [pri][w_->pending - 1].w = w_;
525	pendings [pri][w_->pending - 1].events = revents;	724	pendings [pri][w_->pending - 1].events = revents;
526	}	725	}
527	}	726	}
528		727
529	void inline_speed	728	inline_speed void
		729	feed_reverse (EV_P_ W w)
		730	{
		731	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		732	rfeeds [rfeedcnt++] = w;
		733	}
		734
		735	inline_size void
		736	feed_reverse_done (EV_P_ int revents)
		737	{
		738	do
		739	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		740	while (rfeedcnt);
		741	}
		742
		743	inline_speed void
530	queue_events (EV_P_ W *events, int eventcnt, int type)	744	queue_events (EV_P_ W *events, int eventcnt, int type)
531	{	745	{
532	int i;	746	int i;
533		747
534	for (i = 0; i < eventcnt; ++i)	748	for (i = 0; i < eventcnt; ++i)
535	ev_feed_event (EV_A_ events [i], type);	749	ev_feed_event (EV_A_ events [i], type);
536	}	750	}
537		751
538	/*****************************************************************************/	752	/*****************************************************************************/
539		753
540	void inline_size	754	inline_speed void
541	anfds_init (ANFD *base, int count)
542	{
543	while (count--)
544	{
545	base->head = 0;
546	base->events = EV_NONE;
547	base->reify = 0;
548
549	++base;
550	}
551	}
552
553	void inline_speed
554	fd_event (EV_P_ int fd, int revents)	755	fd_event (EV_P_ int fd, int revents)
555	{	756	{
556	ANFD *anfd = anfds + fd;	757	ANFD *anfd = anfds + fd;
557	ev_io *w;	758	ev_io *w;
558		759
…		…
570	{	771	{
571	if (fd >= 0 && fd < anfdmax)	772	if (fd >= 0 && fd < anfdmax)
572	fd_event (EV_A_ fd, revents);	773	fd_event (EV_A_ fd, revents);
573	}	774	}
574		775
575	void inline_size	776	/* make sure the external fd watch events are in-sync */
		777	/* with the kernel/libev internal state */
		778	inline_size void
576	fd_reify (EV_P)	779	fd_reify (EV_P)
577	{	780	{
578	int i;	781	int i;
579		782
580	for (i = 0; i < fdchangecnt; ++i)	783	for (i = 0; i < fdchangecnt; ++i)
…		…
589	events |= (unsigned char)w->events;	792	events |= (unsigned char)w->events;
590		793
591	#if EV_SELECT_IS_WINSOCKET	794	#if EV_SELECT_IS_WINSOCKET
592	if (events)	795	if (events)
593	{	796	{
594	unsigned long argp;	797	unsigned long arg;
		798	#ifdef EV_FD_TO_WIN32_HANDLE
		799	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		800	#else
595	anfd->handle = _get_osfhandle (fd);	801	anfd->handle = _get_osfhandle (fd);
		802	#endif
596	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	803	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
597	}	804	}
598	#endif	805	#endif
599		806
600	{	807	{
601	unsigned char o_events = anfd->events;	808	unsigned char o_events = anfd->events;
602	unsigned char o_reify = anfd->reify;	809	unsigned char o_reify = anfd->reify;
603		810
604	anfd->reify = 0;	811	anfd->reify = 0;
605	anfd->events = events;	812	anfd->events = events;
606		813
607	if (o_events != events || o_reify & EV_IOFDSET)	814	if (o_events != events || o_reify & EV__IOFDSET)
608	backend_modify (EV_A_ fd, o_events, events);	815	backend_modify (EV_A_ fd, o_events, events);
609	}	816	}
610	}	817	}
611		818
612	fdchangecnt = 0;	819	fdchangecnt = 0;
613	}	820	}
614		821
615	void inline_size	822	/* something about the given fd changed */
		823	inline_size void
616	fd_change (EV_P_ int fd, int flags)	824	fd_change (EV_P_ int fd, int flags)
617	{	825	{
618	unsigned char reify = anfds [fd].reify;	826	unsigned char reify = anfds [fd].reify;
619	anfds [fd].reify |= flags;	827	anfds [fd].reify |= flags;
620		828
…		…
624	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	832	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
625	fdchanges [fdchangecnt - 1] = fd;	833	fdchanges [fdchangecnt - 1] = fd;
626	}	834	}
627	}	835	}
628		836
629	void inline_speed	837	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		838	inline_speed void
630	fd_kill (EV_P_ int fd)	839	fd_kill (EV_P_ int fd)
631	{	840	{
632	ev_io *w;	841	ev_io *w;
633		842
634	while ((w = (ev_io *)anfds [fd].head))	843	while ((w = (ev_io *)anfds [fd].head))
…		…
636	ev_io_stop (EV_A_ w);	845	ev_io_stop (EV_A_ w);
637	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	846	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
638	}	847	}
639	}	848	}
640		849
641	int inline_size	850	/* check whether the given fd is atcually valid, for error recovery */
		851	inline_size int
642	fd_valid (int fd)	852	fd_valid (int fd)
643	{	853	{
644	#ifdef _WIN32	854	#ifdef _WIN32
645	return _get_osfhandle (fd) != -1;	855	return _get_osfhandle (fd) != -1;
646	#else	856	#else
…		…
654	{	864	{
655	int fd;	865	int fd;
656		866
657	for (fd = 0; fd < anfdmax; ++fd)	867	for (fd = 0; fd < anfdmax; ++fd)
658	if (anfds [fd].events)	868	if (anfds [fd].events)
659	if (!fd_valid (fd) == -1 && errno == EBADF)	869	if (!fd_valid (fd) && errno == EBADF)
660	fd_kill (EV_A_ fd);	870	fd_kill (EV_A_ fd);
661	}	871	}
662		872
663	/* called on ENOMEM in select/poll to kill some fds and retry */	873	/* called on ENOMEM in select/poll to kill some fds and retry */
664	static void noinline	874	static void noinline
…		…
682		892
683	for (fd = 0; fd < anfdmax; ++fd)	893	for (fd = 0; fd < anfdmax; ++fd)
684	if (anfds [fd].events)	894	if (anfds [fd].events)
685	{	895	{
686	anfds [fd].events = 0;	896	anfds [fd].events = 0;
		897	anfds [fd].emask = 0;
687	fd_change (EV_A_ fd, EV_IOFDSET | 1);	898	fd_change (EV_A_ fd, EV__IOFDSET | 1);
688	}	899	}
689	}	900	}
690		901
691	/*****************************************************************************/	902	/*****************************************************************************/
692		903
693	void inline_speed	904	/*
694	upheap (WT *heap, int k)	905	* the heap functions want a real array index. array index 0 uis guaranteed to not
695	{	906	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
696	WT w = heap [k];	907	* the branching factor of the d-tree.
		908	*/
697		909
698	while (k)	910	/*
699	{	911	* at the moment we allow libev the luxury of two heaps,
700	int p = (k - 1) >> 1;	912	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		913	* which is more cache-efficient.
		914	* the difference is about 5% with 50000+ watchers.
		915	*/
		916	#if EV_USE_4HEAP
701		917
702	if (heap [p]->at <= w->at)	918	#define DHEAP 4
		919	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		920	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		921	#define UPHEAP_DONE(p,k) ((p) == (k))
		922
		923	/* away from the root */
		924	inline_speed void
		925	downheap (ANHE *heap, int N, int k)
		926	{
		927	ANHE he = heap [k];
		928	ANHE *E = heap + N + HEAP0;
		929
		930	for (;;)
		931	{
		932	ev_tstamp minat;
		933	ANHE *minpos;
		934	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
		935
		936	/* find minimum child */
		937	if (expect_true (pos + DHEAP - 1 < E))
		938	{
		939	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		940	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		941	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		942	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		943	}
		944	else if (pos < E)
		945	{
		946	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		947	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		948	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		949	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		950	}
		951	else
703	break;	952	break;
704		953
		954	if (ANHE_at (he) <= minat)
		955	break;
		956
		957	heap [k] = *minpos;
		958	ev_active (ANHE_w (*minpos)) = k;
		959
		960	k = minpos - heap;
		961	}
		962
		963	heap [k] = he;
		964	ev_active (ANHE_w (he)) = k;
		965	}
		966
		967	#else /* 4HEAP */
		968
		969	#define HEAP0 1
		970	#define HPARENT(k) ((k) >> 1)
		971	#define UPHEAP_DONE(p,k) (!(p))
		972
		973	/* away from the root */
		974	inline_speed void
		975	downheap (ANHE *heap, int N, int k)
		976	{
		977	ANHE he = heap [k];
		978
		979	for (;;)
		980	{
		981	int c = k << 1;
		982
		983	if (c > N + HEAP0 - 1)
		984	break;
		985
		986	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		987	? 1 : 0;
		988
		989	if (ANHE_at (he) <= ANHE_at (heap [c]))
		990	break;
		991
		992	heap [k] = heap [c];
		993	ev_active (ANHE_w (heap [k])) = k;
		994
		995	k = c;
		996	}
		997
		998	heap [k] = he;
		999	ev_active (ANHE_w (he)) = k;
		1000	}
		1001	#endif
		1002
		1003	/* towards the root */
		1004	inline_speed void
		1005	upheap (ANHE *heap, int k)
		1006	{
		1007	ANHE he = heap [k];
		1008
		1009	for (;;)
		1010	{
		1011	int p = HPARENT (k);
		1012
		1013	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1014	break;
		1015
705	heap [k] = heap [p];	1016	heap [k] = heap [p];
706	((W)heap [k])->active = k + 1;	1017	ev_active (ANHE_w (heap [k])) = k;
707	k = p;	1018	k = p;
708	}	1019	}
709		1020
710	heap [k] = w;	1021	heap [k] = he;
711	((W)heap [k])->active = k + 1;	1022	ev_active (ANHE_w (he)) = k;
712	}	1023	}
713		1024
714	void inline_speed	1025	/* move an element suitably so it is in a correct place */
715	downheap (WT *heap, int N, int k)	1026	inline_size void
716	{
717	WT w = heap [k];
718
719	for (;;)
720	{
721	int c = (k << 1) + 1;
722
723	if (c >= N)
724	break;
725
726	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
727	? 1 : 0;
728
729	if (w->at <= heap [c]->at)
730	break;
731
732	heap [k] = heap [c];
733	((W)heap [k])->active = k + 1;
734
735	k = c;
736	}
737
738	heap [k] = w;
739	((W)heap [k])->active = k + 1;
740	}
741
742	void inline_size
743	adjustheap (WT *heap, int N, int k)	1027	adjustheap (ANHE *heap, int N, int k)
744	{	1028	{
		1029	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
745	upheap (heap, k);	1030	upheap (heap, k);
		1031	else
746	downheap (heap, N, k);	1032	downheap (heap, N, k);
		1033	}
		1034
		1035	/* rebuild the heap: this function is used only once and executed rarely */
		1036	inline_size void
		1037	reheap (ANHE *heap, int N)
		1038	{
		1039	int i;
		1040
		1041	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1042	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1043	for (i = 0; i < N; ++i)
		1044	upheap (heap, i + HEAP0);
747	}	1045	}
748		1046
749	/*****************************************************************************/	1047	/*****************************************************************************/
750		1048
		1049	/* associate signal watchers to a signal signal */
751	typedef struct	1050	typedef struct
752	{	1051	{
753	WL head;	1052	WL head;
754	sig_atomic_t volatile gotsig;	1053	EV_ATOMIC_T gotsig;
755	} ANSIG;	1054	} ANSIG;
756		1055
757	static ANSIG *signals;	1056	static ANSIG *signals;
758	static int signalmax;	1057	static int signalmax;
759		1058
760	static int sigpipe [2];	1059	static EV_ATOMIC_T gotsig;
761	static sig_atomic_t volatile gotsig;
762	static ev_io sigev;
763		1060
764	void inline_size	1061	/*****************************************************************************/
765	signals_init (ANSIG *base, int count)
766	{
767	while (count--)
768	{
769	base->head = 0;
770	base->gotsig = 0;
771		1062
772	++base;	1063	/* used to prepare libev internal fd's */
773	}	1064	/* this is not fork-safe */
774	}	1065	inline_speed void
775
776	static void
777	sighandler (int signum)
778	{
779	#if _WIN32
780	signal (signum, sighandler);
781	#endif
782
783	signals [signum - 1].gotsig = 1;
784
785	if (!gotsig)
786	{
787	int old_errno = errno;
788	gotsig = 1;
789	write (sigpipe [1], &signum, 1);
790	errno = old_errno;
791	}
792	}
793
794	void noinline
795	ev_feed_signal_event (EV_P_ int signum)
796	{
797	WL w;
798
799	#if EV_MULTIPLICITY
800	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
801	#endif
802
803	--signum;
804
805	if (signum < 0 || signum >= signalmax)
806	return;
807
808	signals [signum].gotsig = 0;
809
810	for (w = signals [signum].head; w; w = w->next)
811	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
812	}
813
814	static void
815	sigcb (EV_P_ ev_io *iow, int revents)
816	{
817	int signum;
818
819	read (sigpipe [0], &revents, 1);
820	gotsig = 0;
821
822	for (signum = signalmax; signum--; )
823	if (signals [signum].gotsig)
824	ev_feed_signal_event (EV_A_ signum + 1);
825	}
826
827	void inline_speed
828	fd_intern (int fd)	1066	fd_intern (int fd)
829	{	1067	{
830	#ifdef _WIN32	1068	#ifdef _WIN32
831	int arg = 1;	1069	unsigned long arg = 1;
832	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1070	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
833	#else	1071	#else
834	fcntl (fd, F_SETFD, FD_CLOEXEC);	1072	fcntl (fd, F_SETFD, FD_CLOEXEC);
835	fcntl (fd, F_SETFL, O_NONBLOCK);	1073	fcntl (fd, F_SETFL, O_NONBLOCK);
836	#endif	1074	#endif
837	}	1075	}
838		1076
839	static void noinline	1077	static void noinline
840	siginit (EV_P)	1078	evpipe_init (EV_P)
841	{	1079	{
		1080	if (!ev_is_active (&pipe_w))
		1081	{
		1082	#if EV_USE_EVENTFD
		1083	if ((evfd = eventfd (0, 0)) >= 0)
		1084	{
		1085	evpipe [0] = -1;
		1086	fd_intern (evfd);
		1087	ev_io_set (&pipe_w, evfd, EV_READ);
		1088	}
		1089	else
		1090	#endif
		1091	{
		1092	while (pipe (evpipe))
		1093	ev_syserr ("(libev) error creating signal/async pipe");
		1094
842	fd_intern (sigpipe [0]);	1095	fd_intern (evpipe [0]);
843	fd_intern (sigpipe [1]);	1096	fd_intern (evpipe [1]);
		1097	ev_io_set (&pipe_w, evpipe [0], EV_READ);
		1098	}
844		1099
845	ev_io_set (&sigev, sigpipe [0], EV_READ);
846	ev_io_start (EV_A_ &sigev);	1100	ev_io_start (EV_A_ &pipe_w);
847	ev_unref (EV_A); /* child watcher should not keep loop alive */	1101	ev_unref (EV_A); /* watcher should not keep loop alive */
		1102	}
		1103	}
		1104
		1105	inline_size void
		1106	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		1107	{
		1108	if (!*flag)
		1109	{
		1110	int old_errno = errno; /* save errno because write might clobber it */
		1111
		1112	*flag = 1;
		1113
		1114	#if EV_USE_EVENTFD
		1115	if (evfd >= 0)
		1116	{
		1117	uint64_t counter = 1;
		1118	write (evfd, &counter, sizeof (uint64_t));
		1119	}
		1120	else
		1121	#endif
		1122	write (evpipe [1], &old_errno, 1);
		1123
		1124	errno = old_errno;
		1125	}
		1126	}
		1127
		1128	/* called whenever the libev signal pipe */
		1129	/* got some events (signal, async) */
		1130	static void
		1131	pipecb (EV_P_ ev_io *iow, int revents)
		1132	{
		1133	#if EV_USE_EVENTFD
		1134	if (evfd >= 0)
		1135	{
		1136	uint64_t counter;
		1137	read (evfd, &counter, sizeof (uint64_t));
		1138	}
		1139	else
		1140	#endif
		1141	{
		1142	char dummy;
		1143	read (evpipe [0], &dummy, 1);
		1144	}
		1145
		1146	if (gotsig && ev_is_default_loop (EV_A))
		1147	{
		1148	int signum;
		1149	gotsig = 0;
		1150
		1151	for (signum = signalmax; signum--; )
		1152	if (signals [signum].gotsig)
		1153	ev_feed_signal_event (EV_A_ signum + 1);
		1154	}
		1155
		1156	#if EV_ASYNC_ENABLE
		1157	if (gotasync)
		1158	{
		1159	int i;
		1160	gotasync = 0;
		1161
		1162	for (i = asynccnt; i--; )
		1163	if (asyncs [i]->sent)
		1164	{
		1165	asyncs [i]->sent = 0;
		1166	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		1167	}
		1168	}
		1169	#endif
848	}	1170	}
849		1171
850	/*****************************************************************************/	1172	/*****************************************************************************/
851		1173
		1174	static void
		1175	ev_sighandler (int signum)
		1176	{
		1177	#if EV_MULTIPLICITY
		1178	struct ev_loop *loop = &default_loop_struct;
		1179	#endif
		1180
		1181	#if _WIN32
		1182	signal (signum, ev_sighandler);
		1183	#endif
		1184
		1185	signals [signum - 1].gotsig = 1;
		1186	evpipe_write (EV_A_ &gotsig);
		1187	}
		1188
		1189	void noinline
		1190	ev_feed_signal_event (EV_P_ int signum)
		1191	{
		1192	WL w;
		1193
		1194	#if EV_MULTIPLICITY
		1195	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		1196	#endif
		1197
		1198	--signum;
		1199
		1200	if (signum < 0 || signum >= signalmax)
		1201	return;
		1202
		1203	signals [signum].gotsig = 0;
		1204
		1205	for (w = signals [signum].head; w; w = w->next)
		1206	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		1207	}
		1208
		1209	/*****************************************************************************/
		1210
852	static WL childs [EV_PID_HASHSIZE];	1211	static WL childs [EV_PID_HASHSIZE];
853		1212
854	#ifndef _WIN32	1213	#ifndef _WIN32
855		1214
856	static ev_signal childev;	1215	static ev_signal childev;
857		1216
858	void inline_speed	1217	#ifndef WIFCONTINUED
		1218	# define WIFCONTINUED(status) 0
		1219	#endif
		1220
		1221	/* handle a single child status event */
		1222	inline_speed void
859	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	1223	child_reap (EV_P_ int chain, int pid, int status)
860	{	1224	{
861	ev_child *w;	1225	ev_child *w;
		1226	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
862		1227
863	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1228	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1229	{
864	if (w->pid == pid || !w->pid)	1230	if ((w->pid == pid || !w->pid)
		1231	&& (!traced || (w->flags & 1)))
865	{	1232	{
866	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */	1233	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
867	w->rpid = pid;	1234	w->rpid = pid;
868	w->rstatus = status;	1235	w->rstatus = status;
869	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1236	ev_feed_event (EV_A_ (W)w, EV_CHILD);
870	}	1237	}
		1238	}
871	}	1239	}
872		1240
873	#ifndef WCONTINUED	1241	#ifndef WCONTINUED
874	# define WCONTINUED 0	1242	# define WCONTINUED 0
875	#endif	1243	#endif
876		1244
		1245	/* called on sigchld etc., calls waitpid */
877	static void	1246	static void
878	childcb (EV_P_ ev_signal *sw, int revents)	1247	childcb (EV_P_ ev_signal *sw, int revents)
879	{	1248	{
880	int pid, status;	1249	int pid, status;
881		1250
…		…
884	if (!WCONTINUED	1253	if (!WCONTINUED
885	|| errno != EINVAL	1254	|| errno != EINVAL
886	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))	1255	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
887	return;	1256	return;
888		1257
889	/* make sure we are called again until all childs have been reaped */	1258	/* make sure we are called again until all children have been reaped */
890	/* we need to do it this way so that the callback gets called before we continue */	1259	/* we need to do it this way so that the callback gets called before we continue */
891	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1260	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
892		1261
893	child_reap (EV_A_ sw, pid, pid, status);	1262	child_reap (EV_A_ pid, pid, status);
894	if (EV_PID_HASHSIZE > 1)	1263	if (EV_PID_HASHSIZE > 1)
895	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1264	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
896	}	1265	}
897		1266
898	#endif	1267	#endif
899		1268
900	/*****************************************************************************/	1269	/*****************************************************************************/
…		…
962	/* kqueue is borked on everything but netbsd apparently */	1331	/* kqueue is borked on everything but netbsd apparently */
963	/* it usually doesn't work correctly on anything but sockets and pipes */	1332	/* it usually doesn't work correctly on anything but sockets and pipes */
964	flags &= ~EVBACKEND_KQUEUE;	1333	flags &= ~EVBACKEND_KQUEUE;
965	#endif	1334	#endif
966	#ifdef __APPLE__	1335	#ifdef __APPLE__
967	// flags &= ~EVBACKEND_KQUEUE; for documentation	1336	/* only select works correctly on that "unix-certified" platform */
968	flags &= ~EVBACKEND_POLL;	1337	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1338	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
969	#endif	1339	#endif
970		1340
971	return flags;	1341	return flags;
972	}	1342	}
973		1343
974	unsigned int	1344	unsigned int
975	ev_embeddable_backends (void)	1345	ev_embeddable_backends (void)
976	{	1346	{
		1347	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
		1348
977	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */	1349	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
978	return EVBACKEND_KQUEUE	1350	/* please fix it and tell me how to detect the fix */
979	| EVBACKEND_PORT;	1351	flags &= ~EVBACKEND_EPOLL;
		1352
		1353	return flags;
980	}	1354	}
981		1355
982	unsigned int	1356	unsigned int
983	ev_backend (EV_P)	1357	ev_backend (EV_P)
984	{	1358	{
…		…
989	ev_loop_count (EV_P)	1363	ev_loop_count (EV_P)
990	{	1364	{
991	return loop_count;	1365	return loop_count;
992	}	1366	}
993		1367
		1368	unsigned int
		1369	ev_loop_depth (EV_P)
		1370	{
		1371	return loop_depth;
		1372	}
		1373
994	void	1374	void
995	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1375	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
996	{	1376	{
997	io_blocktime = interval;	1377	io_blocktime = interval;
998	}	1378	}
…		…
1001	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1381	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1002	{	1382	{
1003	timeout_blocktime = interval;	1383	timeout_blocktime = interval;
1004	}	1384	}
1005		1385
		1386	/* initialise a loop structure, must be zero-initialised */
1006	static void noinline	1387	static void noinline
1007	loop_init (EV_P_ unsigned int flags)	1388	loop_init (EV_P_ unsigned int flags)
1008	{	1389	{
1009	if (!backend)	1390	if (!backend)
1010	{	1391	{
		1392	#if EV_USE_REALTIME
		1393	if (!have_realtime)
		1394	{
		1395	struct timespec ts;
		1396
		1397	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1398	have_realtime = 1;
		1399	}
		1400	#endif
		1401
1011	#if EV_USE_MONOTONIC	1402	#if EV_USE_MONOTONIC
		1403	if (!have_monotonic)
1012	{	1404	{
1013	struct timespec ts;	1405	struct timespec ts;
		1406
1014	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1407	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1015	have_monotonic = 1;	1408	have_monotonic = 1;
1016	}	1409	}
1017	#endif	1410	#endif
1018		1411
1019	ev_rt_now = ev_time ();	1412	ev_rt_now = ev_time ();
1020	mn_now = get_clock ();	1413	mn_now = get_clock ();
1021	now_floor = mn_now;	1414	now_floor = mn_now;
1022	rtmn_diff = ev_rt_now - mn_now;	1415	rtmn_diff = ev_rt_now - mn_now;
1023		1416
1024	io_blocktime = 0.;	1417	io_blocktime = 0.;
1025	timeout_blocktime = 0.;	1418	timeout_blocktime = 0.;
		1419	backend = 0;
		1420	backend_fd = -1;
		1421	gotasync = 0;
		1422	#if EV_USE_INOTIFY
		1423	fs_fd = -2;
		1424	#endif
1026		1425
1027	/* pid check not overridable via env */	1426	/* pid check not overridable via env */
1028	#ifndef _WIN32	1427	#ifndef _WIN32
1029	if (flags & EVFLAG_FORKCHECK)	1428	if (flags & EVFLAG_FORKCHECK)
1030	curpid = getpid ();	1429	curpid = getpid ();
…		…
1033	if (!(flags & EVFLAG_NOENV)	1432	if (!(flags & EVFLAG_NOENV)
1034	&& !enable_secure ()	1433	&& !enable_secure ()
1035	&& getenv ("LIBEV_FLAGS"))	1434	&& getenv ("LIBEV_FLAGS"))
1036	flags = atoi (getenv ("LIBEV_FLAGS"));	1435	flags = atoi (getenv ("LIBEV_FLAGS"));
1037		1436
1038	if (!(flags & 0x0000ffffUL))	1437	if (!(flags & 0x0000ffffU))
1039	flags |= ev_recommended_backends ();	1438	flags |= ev_recommended_backends ();
1040
1041	backend = 0;
1042	backend_fd = -1;
1043	#if EV_USE_INOTIFY
1044	fs_fd = -2;
1045	#endif
1046		1439
1047	#if EV_USE_PORT	1440	#if EV_USE_PORT
1048	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1441	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1049	#endif	1442	#endif
1050	#if EV_USE_KQUEUE	1443	#if EV_USE_KQUEUE
…		…
1058	#endif	1451	#endif
1059	#if EV_USE_SELECT	1452	#if EV_USE_SELECT
1060	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1453	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1061	#endif	1454	#endif
1062		1455
		1456	ev_prepare_init (&pending_w, pendingcb);
		1457
1063	ev_init (&sigev, sigcb);	1458	ev_init (&pipe_w, pipecb);
1064	ev_set_priority (&sigev, EV_MAXPRI);	1459	ev_set_priority (&pipe_w, EV_MAXPRI);
1065	}	1460	}
1066	}	1461	}
1067		1462
		1463	/* free up a loop structure */
1068	static void noinline	1464	static void noinline
1069	loop_destroy (EV_P)	1465	loop_destroy (EV_P)
1070	{	1466	{
1071	int i;	1467	int i;
		1468
		1469	if (ev_is_active (&pipe_w))
		1470	{
		1471	ev_ref (EV_A); /* signal watcher */
		1472	ev_io_stop (EV_A_ &pipe_w);
		1473
		1474	#if EV_USE_EVENTFD
		1475	if (evfd >= 0)
		1476	close (evfd);
		1477	#endif
		1478
		1479	if (evpipe [0] >= 0)
		1480	{
		1481	close (evpipe [0]);
		1482	close (evpipe [1]);
		1483	}
		1484	}
1072		1485
1073	#if EV_USE_INOTIFY	1486	#if EV_USE_INOTIFY
1074	if (fs_fd >= 0)	1487	if (fs_fd >= 0)
1075	close (fs_fd);	1488	close (fs_fd);
1076	#endif	1489	#endif
…		…
1103	}	1516	}
1104		1517
1105	ev_free (anfds); anfdmax = 0;	1518	ev_free (anfds); anfdmax = 0;
1106		1519
1107	/* have to use the microsoft-never-gets-it-right macro */	1520	/* have to use the microsoft-never-gets-it-right macro */
		1521	array_free (rfeed, EMPTY);
1108	array_free (fdchange, EMPTY);	1522	array_free (fdchange, EMPTY);
1109	array_free (timer, EMPTY);	1523	array_free (timer, EMPTY);
1110	#if EV_PERIODIC_ENABLE	1524	#if EV_PERIODIC_ENABLE
1111	array_free (periodic, EMPTY);	1525	array_free (periodic, EMPTY);
1112	#endif	1526	#endif
1113	#if EV_FORK_ENABLE	1527	#if EV_FORK_ENABLE
1114	array_free (fork, EMPTY);	1528	array_free (fork, EMPTY);
1115	#endif	1529	#endif
1116	array_free (prepare, EMPTY);	1530	array_free (prepare, EMPTY);
1117	array_free (check, EMPTY);	1531	array_free (check, EMPTY);
		1532	#if EV_ASYNC_ENABLE
		1533	array_free (async, EMPTY);
		1534	#endif
1118		1535
1119	backend = 0;	1536	backend = 0;
1120	}	1537	}
1121		1538
		1539	#if EV_USE_INOTIFY
1122	void inline_size infy_fork (EV_P);	1540	inline_size void infy_fork (EV_P);
		1541	#endif
1123		1542
1124	void inline_size	1543	inline_size void
1125	loop_fork (EV_P)	1544	loop_fork (EV_P)
1126	{	1545	{
1127	#if EV_USE_PORT	1546	#if EV_USE_PORT
1128	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1547	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1129	#endif	1548	#endif
…		…
1135	#endif	1554	#endif
1136	#if EV_USE_INOTIFY	1555	#if EV_USE_INOTIFY
1137	infy_fork (EV_A);	1556	infy_fork (EV_A);
1138	#endif	1557	#endif
1139		1558
1140	if (ev_is_active (&sigev))	1559	if (ev_is_active (&pipe_w))
1141	{	1560	{
1142	/* default loop */	1561	/* this "locks" the handlers against writing to the pipe */
		1562	/* while we modify the fd vars */
		1563	gotsig = 1;
		1564	#if EV_ASYNC_ENABLE
		1565	gotasync = 1;
		1566	#endif
1143		1567
1144	ev_ref (EV_A);	1568	ev_ref (EV_A);
1145	ev_io_stop (EV_A_ &sigev);	1569	ev_io_stop (EV_A_ &pipe_w);
		1570
		1571	#if EV_USE_EVENTFD
		1572	if (evfd >= 0)
		1573	close (evfd);
		1574	#endif
		1575
		1576	if (evpipe [0] >= 0)
		1577	{
1146	close (sigpipe [0]);	1578	close (evpipe [0]);
1147	close (sigpipe [1]);	1579	close (evpipe [1]);
		1580	}
1148		1581
1149	while (pipe (sigpipe))
1150	syserr ("(libev) error creating pipe");
1151
1152	siginit (EV_A);	1582	evpipe_init (EV_A);
		1583	/* now iterate over everything, in case we missed something */
		1584	pipecb (EV_A_ &pipe_w, EV_READ);
1153	}	1585	}
1154		1586
1155	postfork = 0;	1587	postfork = 0;
1156	}	1588	}
1157		1589
1158	#if EV_MULTIPLICITY	1590	#if EV_MULTIPLICITY
		1591
1159	struct ev_loop *	1592	struct ev_loop *
1160	ev_loop_new (unsigned int flags)	1593	ev_loop_new (unsigned int flags)
1161	{	1594	{
1162	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1595	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1163		1596
…		…
1179	}	1612	}
1180		1613
1181	void	1614	void
1182	ev_loop_fork (EV_P)	1615	ev_loop_fork (EV_P)
1183	{	1616	{
1184	postfork = 1;	1617	postfork = 1; /* must be in line with ev_default_fork */
1185	}	1618	}
1186		1619
		1620	#if EV_VERIFY
		1621	static void noinline
		1622	verify_watcher (EV_P_ W w)
		1623	{
		1624	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1625
		1626	if (w->pending)
		1627	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1628	}
		1629
		1630	static void noinline
		1631	verify_heap (EV_P_ ANHE *heap, int N)
		1632	{
		1633	int i;
		1634
		1635	for (i = HEAP0; i < N + HEAP0; ++i)
		1636	{
		1637	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1638	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1639	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1640
		1641	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1642	}
		1643	}
		1644
		1645	static void noinline
		1646	array_verify (EV_P_ W *ws, int cnt)
		1647	{
		1648	while (cnt--)
		1649	{
		1650	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1651	verify_watcher (EV_A_ ws [cnt]);
		1652	}
		1653	}
		1654	#endif
		1655
		1656	void
		1657	ev_loop_verify (EV_P)
		1658	{
		1659	#if EV_VERIFY
		1660	int i;
		1661	WL w;
		1662
		1663	assert (activecnt >= -1);
		1664
		1665	assert (fdchangemax >= fdchangecnt);
		1666	for (i = 0; i < fdchangecnt; ++i)
		1667	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1668
		1669	assert (anfdmax >= 0);
		1670	for (i = 0; i < anfdmax; ++i)
		1671	for (w = anfds [i].head; w; w = w->next)
		1672	{
		1673	verify_watcher (EV_A_ (W)w);
		1674	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1675	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1676	}
		1677
		1678	assert (timermax >= timercnt);
		1679	verify_heap (EV_A_ timers, timercnt);
		1680
		1681	#if EV_PERIODIC_ENABLE
		1682	assert (periodicmax >= periodiccnt);
		1683	verify_heap (EV_A_ periodics, periodiccnt);
		1684	#endif
		1685
		1686	for (i = NUMPRI; i--; )
		1687	{
		1688	assert (pendingmax [i] >= pendingcnt [i]);
		1689	#if EV_IDLE_ENABLE
		1690	assert (idleall >= 0);
		1691	assert (idlemax [i] >= idlecnt [i]);
		1692	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1693	#endif
		1694	}
		1695
		1696	#if EV_FORK_ENABLE
		1697	assert (forkmax >= forkcnt);
		1698	array_verify (EV_A_ (W *)forks, forkcnt);
		1699	#endif
		1700
		1701	#if EV_ASYNC_ENABLE
		1702	assert (asyncmax >= asynccnt);
		1703	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1704	#endif
		1705
		1706	assert (preparemax >= preparecnt);
		1707	array_verify (EV_A_ (W *)prepares, preparecnt);
		1708
		1709	assert (checkmax >= checkcnt);
		1710	array_verify (EV_A_ (W *)checks, checkcnt);
		1711
		1712	# if 0
		1713	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1714	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1187	#endif	1715	# endif
		1716	#endif
		1717	}
		1718
		1719	#endif /* multiplicity */
1188		1720
1189	#if EV_MULTIPLICITY	1721	#if EV_MULTIPLICITY
1190	struct ev_loop *	1722	struct ev_loop *
1191	ev_default_loop_init (unsigned int flags)	1723	ev_default_loop_init (unsigned int flags)
1192	#else	1724	#else
1193	int	1725	int
1194	ev_default_loop (unsigned int flags)	1726	ev_default_loop (unsigned int flags)
1195	#endif	1727	#endif
1196	{	1728	{
1197	if (sigpipe [0] == sigpipe [1])
1198	if (pipe (sigpipe))
1199	return 0;
1200
1201	if (!ev_default_loop_ptr)	1729	if (!ev_default_loop_ptr)
1202	{	1730	{
1203	#if EV_MULTIPLICITY	1731	#if EV_MULTIPLICITY
1204	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1732	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1205	#else	1733	#else
…		…
1208		1736
1209	loop_init (EV_A_ flags);	1737	loop_init (EV_A_ flags);
1210		1738
1211	if (ev_backend (EV_A))	1739	if (ev_backend (EV_A))
1212	{	1740	{
1213	siginit (EV_A);
1214
1215	#ifndef _WIN32	1741	#ifndef _WIN32
1216	ev_signal_init (&childev, childcb, SIGCHLD);	1742	ev_signal_init (&childev, childcb, SIGCHLD);
1217	ev_set_priority (&childev, EV_MAXPRI);	1743	ev_set_priority (&childev, EV_MAXPRI);
1218	ev_signal_start (EV_A_ &childev);	1744	ev_signal_start (EV_A_ &childev);
1219	ev_unref (EV_A); /* child watcher should not keep loop alive */	1745	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1231	{	1757	{
1232	#if EV_MULTIPLICITY	1758	#if EV_MULTIPLICITY
1233	struct ev_loop *loop = ev_default_loop_ptr;	1759	struct ev_loop *loop = ev_default_loop_ptr;
1234	#endif	1760	#endif
1235		1761
		1762	ev_default_loop_ptr = 0;
		1763
1236	#ifndef _WIN32	1764	#ifndef _WIN32
1237	ev_ref (EV_A); /* child watcher */	1765	ev_ref (EV_A); /* child watcher */
1238	ev_signal_stop (EV_A_ &childev);	1766	ev_signal_stop (EV_A_ &childev);
1239	#endif	1767	#endif
1240		1768
1241	ev_ref (EV_A); /* signal watcher */
1242	ev_io_stop (EV_A_ &sigev);
1243
1244	close (sigpipe [0]); sigpipe [0] = 0;
1245	close (sigpipe [1]); sigpipe [1] = 0;
1246
1247	loop_destroy (EV_A);	1769	loop_destroy (EV_A);
1248	}	1770	}
1249		1771
1250	void	1772	void
1251	ev_default_fork (void)	1773	ev_default_fork (void)
1252	{	1774	{
1253	#if EV_MULTIPLICITY	1775	#if EV_MULTIPLICITY
1254	struct ev_loop *loop = ev_default_loop_ptr;	1776	struct ev_loop *loop = ev_default_loop_ptr;
1255	#endif	1777	#endif
1256		1778
1257	if (backend)	1779	postfork = 1; /* must be in line with ev_loop_fork */
1258	postfork = 1;
1259	}	1780	}
1260		1781
1261	/*****************************************************************************/	1782	/*****************************************************************************/
1262		1783
1263	void	1784	void
1264	ev_invoke (EV_P_ void *w, int revents)	1785	ev_invoke (EV_P_ void *w, int revents)
1265	{	1786	{
1266	EV_CB_INVOKE ((W)w, revents);	1787	EV_CB_INVOKE ((W)w, revents);
1267	}	1788	}
1268		1789
1269	void inline_speed	1790	inline_speed void
1270	call_pending (EV_P)	1791	call_pending (EV_P)
1271	{	1792	{
1272	int pri;	1793	int pri;
1273		1794
1274	for (pri = NUMPRI; pri--; )	1795	for (pri = NUMPRI; pri--; )
1275	while (pendingcnt [pri])	1796	while (pendingcnt [pri])
1276	{	1797	{
1277	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1798	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1278		1799
1279	if (expect_true (p->w))
1280	{
1281	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1800	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1801	/* ^ this is no longer true, as pending_w could be here */
1282		1802
1283	p->w->pending = 0;	1803	p->w->pending = 0;
1284	EV_CB_INVOKE (p->w, p->events);	1804	EV_CB_INVOKE (p->w, p->events);
1285	}	1805	EV_FREQUENT_CHECK;
1286	}	1806	}
1287	}	1807	}
1288		1808
1289	void inline_size
1290	timers_reify (EV_P)
1291	{
1292	while (timercnt && ((WT)timers [0])->at <= mn_now)
1293	{
1294	ev_timer *w = (ev_timer *)timers [0];
1295
1296	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1297
1298	/* first reschedule or stop timer */
1299	if (w->repeat)
1300	{
1301	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1302
1303	((WT)w)->at += w->repeat;
1304	if (((WT)w)->at < mn_now)
1305	((WT)w)->at = mn_now;
1306
1307	downheap (timers, timercnt, 0);
1308	}
1309	else
1310	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1311
1312	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1313	}
1314	}
1315
1316	#if EV_PERIODIC_ENABLE
1317	void inline_size
1318	periodics_reify (EV_P)
1319	{
1320	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1321	{
1322	ev_periodic *w = (ev_periodic *)periodics [0];
1323
1324	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1325
1326	/* first reschedule or stop timer */
1327	if (w->reschedule_cb)
1328	{
1329	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1330	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1331	downheap (periodics, periodiccnt, 0);
1332	}
1333	else if (w->interval)
1334	{
1335	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1336	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1337	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1338	downheap (periodics, periodiccnt, 0);
1339	}
1340	else
1341	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1342
1343	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1344	}
1345	}
1346
1347	static void noinline
1348	periodics_reschedule (EV_P)
1349	{
1350	int i;
1351
1352	/* adjust periodics after time jump */
1353	for (i = 0; i < periodiccnt; ++i)
1354	{
1355	ev_periodic *w = (ev_periodic *)periodics [i];
1356
1357	if (w->reschedule_cb)
1358	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1359	else if (w->interval)
1360	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1361	}
1362
1363	/* now rebuild the heap */
1364	for (i = periodiccnt >> 1; i--; )
1365	downheap (periodics, periodiccnt, i);
1366	}
1367	#endif
1368
1369	#if EV_IDLE_ENABLE	1809	#if EV_IDLE_ENABLE
1370	void inline_size	1810	/* make idle watchers pending. this handles the "call-idle */
		1811	/* only when higher priorities are idle" logic */
		1812	inline_size void
1371	idle_reify (EV_P)	1813	idle_reify (EV_P)
1372	{	1814	{
1373	if (expect_false (idleall))	1815	if (expect_false (idleall))
1374	{	1816	{
1375	int pri;	1817	int pri;
…		…
1387	}	1829	}
1388	}	1830	}
1389	}	1831	}
1390	#endif	1832	#endif
1391		1833
1392	void inline_speed	1834	/* make timers pending */
		1835	inline_size void
		1836	timers_reify (EV_P)
		1837	{
		1838	EV_FREQUENT_CHECK;
		1839
		1840	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		1841	{
		1842	do
		1843	{
		1844	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1845
		1846	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1847
		1848	/* first reschedule or stop timer */
		1849	if (w->repeat)
		1850	{
		1851	ev_at (w) += w->repeat;
		1852	if (ev_at (w) < mn_now)
		1853	ev_at (w) = mn_now;
		1854
		1855	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1856
		1857	ANHE_at_cache (timers [HEAP0]);
		1858	downheap (timers, timercnt, HEAP0);
		1859	}
		1860	else
		1861	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1862
		1863	EV_FREQUENT_CHECK;
		1864	feed_reverse (EV_A_ (W)w);
		1865	}
		1866	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
		1867
		1868	feed_reverse_done (EV_A_ EV_TIMEOUT);
		1869	}
		1870	}
		1871
		1872	#if EV_PERIODIC_ENABLE
		1873	/* make periodics pending */
		1874	inline_size void
		1875	periodics_reify (EV_P)
		1876	{
		1877	EV_FREQUENT_CHECK;
		1878
		1879	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		1880	{
		1881	int feed_count = 0;
		1882
		1883	do
		1884	{
		1885	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1886
		1887	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1888
		1889	/* first reschedule or stop timer */
		1890	if (w->reschedule_cb)
		1891	{
		1892	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1893
		1894	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		1895
		1896	ANHE_at_cache (periodics [HEAP0]);
		1897	downheap (periodics, periodiccnt, HEAP0);
		1898	}
		1899	else if (w->interval)
		1900	{
		1901	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1902	/* if next trigger time is not sufficiently in the future, put it there */
		1903	/* this might happen because of floating point inexactness */
		1904	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1905	{
		1906	ev_at (w) += w->interval;
		1907
		1908	/* if interval is unreasonably low we might still have a time in the past */
		1909	/* so correct this. this will make the periodic very inexact, but the user */
		1910	/* has effectively asked to get triggered more often than possible */
		1911	if (ev_at (w) < ev_rt_now)
		1912	ev_at (w) = ev_rt_now;
		1913	}
		1914
		1915	ANHE_at_cache (periodics [HEAP0]);
		1916	downheap (periodics, periodiccnt, HEAP0);
		1917	}
		1918	else
		1919	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1920
		1921	EV_FREQUENT_CHECK;
		1922	feed_reverse (EV_A_ (W)w);
		1923	}
		1924	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
		1925
		1926	feed_reverse_done (EV_A_ EV_PERIODIC);
		1927	}
		1928	}
		1929
		1930	/* simply recalculate all periodics */
		1931	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
		1932	static void noinline
		1933	periodics_reschedule (EV_P)
		1934	{
		1935	int i;
		1936
		1937	/* adjust periodics after time jump */
		1938	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		1939	{
		1940	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		1941
		1942	if (w->reschedule_cb)
		1943	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1944	else if (w->interval)
		1945	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1946
		1947	ANHE_at_cache (periodics [i]);
		1948	}
		1949
		1950	reheap (periodics, periodiccnt);
		1951	}
		1952	#endif
		1953
		1954	/* adjust all timers by a given offset */
		1955	static void noinline
		1956	timers_reschedule (EV_P_ ev_tstamp adjust)
		1957	{
		1958	int i;
		1959
		1960	for (i = 0; i < timercnt; ++i)
		1961	{
		1962	ANHE *he = timers + i + HEAP0;
		1963	ANHE_w (*he)->at += adjust;
		1964	ANHE_at_cache (*he);
		1965	}
		1966	}
		1967
		1968	/* fetch new monotonic and realtime times from the kernel */
		1969	/* also detetc if there was a timejump, and act accordingly */
		1970	inline_speed void
1393	time_update (EV_P_ ev_tstamp max_block)	1971	time_update (EV_P_ ev_tstamp max_block)
1394	{	1972	{
1395	int i;
1396
1397	#if EV_USE_MONOTONIC	1973	#if EV_USE_MONOTONIC
1398	if (expect_true (have_monotonic))	1974	if (expect_true (have_monotonic))
1399	{	1975	{
		1976	int i;
1400	ev_tstamp odiff = rtmn_diff;	1977	ev_tstamp odiff = rtmn_diff;
1401		1978
1402	mn_now = get_clock ();	1979	mn_now = get_clock ();
1403		1980
1404	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	1981	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1422	*/	1999	*/
1423	for (i = 4; --i; )	2000	for (i = 4; --i; )
1424	{	2001	{
1425	rtmn_diff = ev_rt_now - mn_now;	2002	rtmn_diff = ev_rt_now - mn_now;
1426		2003
1427	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	2004	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1428	return; /* all is well */	2005	return; /* all is well */
1429		2006
1430	ev_rt_now = ev_time ();	2007	ev_rt_now = ev_time ();
1431	mn_now = get_clock ();	2008	mn_now = get_clock ();
1432	now_floor = mn_now;	2009	now_floor = mn_now;
1433	}	2010	}
1434		2011
		2012	/* no timer adjustment, as the monotonic clock doesn't jump */
		2013	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1435	# if EV_PERIODIC_ENABLE	2014	# if EV_PERIODIC_ENABLE
1436	periodics_reschedule (EV_A);	2015	periodics_reschedule (EV_A);
1437	# endif	2016	# endif
1438	/* no timer adjustment, as the monotonic clock doesn't jump */
1439	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1440	}	2017	}
1441	else	2018	else
1442	#endif	2019	#endif
1443	{	2020	{
1444	ev_rt_now = ev_time ();	2021	ev_rt_now = ev_time ();
1445		2022
1446	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2023	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1447	{	2024	{
		2025	/* adjust timers. this is easy, as the offset is the same for all of them */
		2026	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1448	#if EV_PERIODIC_ENABLE	2027	#if EV_PERIODIC_ENABLE
1449	periodics_reschedule (EV_A);	2028	periodics_reschedule (EV_A);
1450	#endif	2029	#endif
1451	/* adjust timers. this is easy, as the offset is the same for all of them */
1452	for (i = 0; i < timercnt; ++i)
1453	((WT)timers [i])->at += ev_rt_now - mn_now;
1454	}	2030	}
1455		2031
1456	mn_now = ev_rt_now;	2032	mn_now = ev_rt_now;
1457	}	2033	}
1458	}	2034	}
1459		2035
1460	void	2036	void
1461	ev_ref (EV_P)
1462	{
1463	++activecnt;
1464	}
1465
1466	void
1467	ev_unref (EV_P)
1468	{
1469	--activecnt;
1470	}
1471
1472	static int loop_done;
1473
1474	void
1475	ev_loop (EV_P_ int flags)	2037	ev_loop (EV_P_ int flags)
1476	{	2038	{
1477	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	2039	++loop_depth;
1478	? EVUNLOOP_ONE	2040
1479	: EVUNLOOP_CANCEL;	2041	loop_done = EVUNLOOP_CANCEL;
1480		2042
1481	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2043	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1482		2044
1483	do	2045	do
1484	{	2046	{
		2047	#if EV_VERIFY >= 2
		2048	ev_loop_verify (EV_A);
		2049	#endif
		2050
1485	#ifndef _WIN32	2051	#ifndef _WIN32
1486	if (expect_false (curpid)) /* penalise the forking check even more */	2052	if (expect_false (curpid)) /* penalise the forking check even more */
1487	if (expect_false (getpid () != curpid))	2053	if (expect_false (getpid () != curpid))
1488	{	2054	{
1489	curpid = getpid ();	2055	curpid = getpid ();
…		…
1506	{	2072	{
1507	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2073	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1508	call_pending (EV_A);	2074	call_pending (EV_A);
1509	}	2075	}
1510		2076
1511	if (expect_false (!activecnt))
1512	break;
1513
1514	/* we might have forked, so reify kernel state if necessary */	2077	/* we might have forked, so reify kernel state if necessary */
1515	if (expect_false (postfork))	2078	if (expect_false (postfork))
1516	loop_fork (EV_A);	2079	loop_fork (EV_A);
1517		2080
1518	/* update fd-related kernel structures */	2081	/* update fd-related kernel structures */
…		…
1523	ev_tstamp waittime = 0.;	2086	ev_tstamp waittime = 0.;
1524	ev_tstamp sleeptime = 0.;	2087	ev_tstamp sleeptime = 0.;
1525		2088
1526	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2089	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1527	{	2090	{
		2091	/* remember old timestamp for io_blocktime calculation */
		2092	ev_tstamp prev_mn_now = mn_now;
		2093
1528	/* update time to cancel out callback processing overhead */	2094	/* update time to cancel out callback processing overhead */
1529	time_update (EV_A_ 1e100);	2095	time_update (EV_A_ 1e100);
1530		2096
1531	waittime = MAX_BLOCKTIME;	2097	waittime = MAX_BLOCKTIME;
1532		2098
1533	if (timercnt)	2099	if (timercnt)
1534	{	2100	{
1535	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	2101	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1536	if (waittime > to) waittime = to;	2102	if (waittime > to) waittime = to;
1537	}	2103	}
1538		2104
1539	#if EV_PERIODIC_ENABLE	2105	#if EV_PERIODIC_ENABLE
1540	if (periodiccnt)	2106	if (periodiccnt)
1541	{	2107	{
1542	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	2108	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1543	if (waittime > to) waittime = to;	2109	if (waittime > to) waittime = to;
1544	}	2110	}
1545	#endif	2111	#endif
1546		2112
		2113	/* don't let timeouts decrease the waittime below timeout_blocktime */
1547	if (expect_false (waittime < timeout_blocktime))	2114	if (expect_false (waittime < timeout_blocktime))
1548	waittime = timeout_blocktime;	2115	waittime = timeout_blocktime;
1549		2116
1550	sleeptime = waittime - backend_fudge;	2117	/* extra check because io_blocktime is commonly 0 */
1551
1552	if (expect_true (sleeptime > io_blocktime))	2118	if (expect_false (io_blocktime))
1553	sleeptime = io_blocktime;
1554
1555	if (sleeptime)
1556	{	2119	{
		2120	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2121
		2122	if (sleeptime > waittime - backend_fudge)
		2123	sleeptime = waittime - backend_fudge;
		2124
		2125	if (expect_true (sleeptime > 0.))
		2126	{
1557	ev_sleep (sleeptime);	2127	ev_sleep (sleeptime);
1558	waittime -= sleeptime;	2128	waittime -= sleeptime;
		2129	}
1559	}	2130	}
1560	}	2131	}
1561		2132
1562	++loop_count;	2133	++loop_count;
1563	backend_poll (EV_A_ waittime);	2134	backend_poll (EV_A_ waittime);
…		…
1580	/* queue check watchers, to be executed first */	2151	/* queue check watchers, to be executed first */
1581	if (expect_false (checkcnt))	2152	if (expect_false (checkcnt))
1582	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2153	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1583		2154
1584	call_pending (EV_A);	2155	call_pending (EV_A);
1585
1586	}	2156	}
1587	while (expect_true (activecnt && !loop_done));	2157	while (expect_true (
		2158	activecnt
		2159	&& !loop_done
		2160	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		2161	));
1588		2162
1589	if (loop_done == EVUNLOOP_ONE)	2163	if (loop_done == EVUNLOOP_ONE)
1590	loop_done = EVUNLOOP_CANCEL;	2164	loop_done = EVUNLOOP_CANCEL;
		2165
		2166	--loop_depth;
1591	}	2167	}
1592		2168
1593	void	2169	void
1594	ev_unloop (EV_P_ int how)	2170	ev_unloop (EV_P_ int how)
1595	{	2171	{
1596	loop_done = how;	2172	loop_done = how;
1597	}	2173	}
1598		2174
		2175	void
		2176	ev_ref (EV_P)
		2177	{
		2178	++activecnt;
		2179	}
		2180
		2181	void
		2182	ev_unref (EV_P)
		2183	{
		2184	--activecnt;
		2185	}
		2186
		2187	void
		2188	ev_now_update (EV_P)
		2189	{
		2190	time_update (EV_A_ 1e100);
		2191	}
		2192
		2193	void
		2194	ev_suspend (EV_P)
		2195	{
		2196	ev_now_update (EV_A);
		2197	}
		2198
		2199	void
		2200	ev_resume (EV_P)
		2201	{
		2202	ev_tstamp mn_prev = mn_now;
		2203
		2204	ev_now_update (EV_A);
		2205	timers_reschedule (EV_A_ mn_now - mn_prev);
		2206	#if EV_PERIODIC_ENABLE
		2207	/* TODO: really do this? */
		2208	periodics_reschedule (EV_A);
		2209	#endif
		2210	}
		2211
1599	/*****************************************************************************/	2212	/*****************************************************************************/
		2213	/* singly-linked list management, used when the expected list length is short */
1600		2214
1601	void inline_size	2215	inline_size void
1602	wlist_add (WL *head, WL elem)	2216	wlist_add (WL *head, WL elem)
1603	{	2217	{
1604	elem->next = *head;	2218	elem->next = *head;
1605	*head = elem;	2219	*head = elem;
1606	}	2220	}
1607		2221
1608	void inline_size	2222	inline_size void
1609	wlist_del (WL *head, WL elem)	2223	wlist_del (WL *head, WL elem)
1610	{	2224	{
1611	while (*head)	2225	while (*head)
1612	{	2226	{
1613	if (*head == elem)	2227	if (*head == elem)
…		…
1618		2232
1619	head = &(*head)->next;	2233	head = &(*head)->next;
1620	}	2234	}
1621	}	2235	}
1622		2236
1623	void inline_speed	2237	/* internal, faster, version of ev_clear_pending */
		2238	inline_speed void
1624	clear_pending (EV_P_ W w)	2239	clear_pending (EV_P_ W w)
1625	{	2240	{
1626	if (w->pending)	2241	if (w->pending)
1627	{	2242	{
1628	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2243	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1629	w->pending = 0;	2244	w->pending = 0;
1630	}	2245	}
1631	}	2246	}
1632		2247
1633	int	2248	int
…		…
1637	int pending = w_->pending;	2252	int pending = w_->pending;
1638		2253
1639	if (expect_true (pending))	2254	if (expect_true (pending))
1640	{	2255	{
1641	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2256	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2257	p->w = (W)&pending_w;
1642	w_->pending = 0;	2258	w_->pending = 0;
1643	p->w = 0;
1644	return p->events;	2259	return p->events;
1645	}	2260	}
1646	else	2261	else
1647	return 0;	2262	return 0;
1648	}	2263	}
1649		2264
1650	void inline_size	2265	inline_size void
1651	pri_adjust (EV_P_ W w)	2266	pri_adjust (EV_P_ W w)
1652	{	2267	{
1653	int pri = w->priority;	2268	int pri = ev_priority (w);
1654	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2269	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1655	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2270	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1656	w->priority = pri;	2271	ev_set_priority (w, pri);
1657	}	2272	}
1658		2273
1659	void inline_speed	2274	inline_speed void
1660	ev_start (EV_P_ W w, int active)	2275	ev_start (EV_P_ W w, int active)
1661	{	2276	{
1662	pri_adjust (EV_A_ w);	2277	pri_adjust (EV_A_ w);
1663	w->active = active;	2278	w->active = active;
1664	ev_ref (EV_A);	2279	ev_ref (EV_A);
1665	}	2280	}
1666		2281
1667	void inline_size	2282	inline_size void
1668	ev_stop (EV_P_ W w)	2283	ev_stop (EV_P_ W w)
1669	{	2284	{
1670	ev_unref (EV_A);	2285	ev_unref (EV_A);
1671	w->active = 0;	2286	w->active = 0;
1672	}	2287	}
…		…
1679	int fd = w->fd;	2294	int fd = w->fd;
1680		2295
1681	if (expect_false (ev_is_active (w)))	2296	if (expect_false (ev_is_active (w)))
1682	return;	2297	return;
1683		2298
1684	assert (("ev_io_start called with negative fd", fd >= 0));	2299	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2300	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2301
		2302	EV_FREQUENT_CHECK;
1685		2303
1686	ev_start (EV_A_ (W)w, 1);	2304	ev_start (EV_A_ (W)w, 1);
1687	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2305	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1688	wlist_add (&anfds[fd].head, (WL)w);	2306	wlist_add (&anfds[fd].head, (WL)w);
1689		2307
1690	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2308	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
1691	w->events &= ~EV_IOFDSET;	2309	w->events &= ~EV__IOFDSET;
		2310
		2311	EV_FREQUENT_CHECK;
1692	}	2312	}
1693		2313
1694	void noinline	2314	void noinline
1695	ev_io_stop (EV_P_ ev_io *w)	2315	ev_io_stop (EV_P_ ev_io *w)
1696	{	2316	{
1697	clear_pending (EV_A_ (W)w);	2317	clear_pending (EV_A_ (W)w);
1698	if (expect_false (!ev_is_active (w)))	2318	if (expect_false (!ev_is_active (w)))
1699	return;	2319	return;
1700		2320
1701	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2321	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2322
		2323	EV_FREQUENT_CHECK;
1702		2324
1703	wlist_del (&anfds[w->fd].head, (WL)w);	2325	wlist_del (&anfds[w->fd].head, (WL)w);
1704	ev_stop (EV_A_ (W)w);	2326	ev_stop (EV_A_ (W)w);
1705		2327
1706	fd_change (EV_A_ w->fd, 1);	2328	fd_change (EV_A_ w->fd, 1);
		2329
		2330	EV_FREQUENT_CHECK;
1707	}	2331	}
1708		2332
1709	void noinline	2333	void noinline
1710	ev_timer_start (EV_P_ ev_timer *w)	2334	ev_timer_start (EV_P_ ev_timer *w)
1711	{	2335	{
1712	if (expect_false (ev_is_active (w)))	2336	if (expect_false (ev_is_active (w)))
1713	return;	2337	return;
1714		2338
1715	((WT)w)->at += mn_now;	2339	ev_at (w) += mn_now;
1716		2340
1717	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2341	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1718		2342
		2343	EV_FREQUENT_CHECK;
		2344
		2345	++timercnt;
1719	ev_start (EV_A_ (W)w, ++timercnt);	2346	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1720	array_needsize (WT, timers, timermax, timercnt, EMPTY2);	2347	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1721	timers [timercnt - 1] = (WT)w;	2348	ANHE_w (timers [ev_active (w)]) = (WT)w;
1722	upheap (timers, timercnt - 1);	2349	ANHE_at_cache (timers [ev_active (w)]);
		2350	upheap (timers, ev_active (w));
1723		2351
		2352	EV_FREQUENT_CHECK;
		2353
1724	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	2354	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1725	}	2355	}
1726		2356
1727	void noinline	2357	void noinline
1728	ev_timer_stop (EV_P_ ev_timer *w)	2358	ev_timer_stop (EV_P_ ev_timer *w)
1729	{	2359	{
1730	clear_pending (EV_A_ (W)w);	2360	clear_pending (EV_A_ (W)w);
1731	if (expect_false (!ev_is_active (w)))	2361	if (expect_false (!ev_is_active (w)))
1732	return;	2362	return;
1733		2363
1734	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));	2364	EV_FREQUENT_CHECK;
1735		2365
1736	{	2366	{
1737	int active = ((W)w)->active;	2367	int active = ev_active (w);
1738		2368
		2369	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2370
		2371	--timercnt;
		2372
1739	if (expect_true (--active < --timercnt))	2373	if (expect_true (active < timercnt + HEAP0))
1740	{	2374	{
1741	timers [active] = timers [timercnt];	2375	timers [active] = timers [timercnt + HEAP0];
1742	adjustheap (timers, timercnt, active);	2376	adjustheap (timers, timercnt, active);
1743	}	2377	}
1744	}	2378	}
1745		2379
1746	((WT)w)->at -= mn_now;	2380	EV_FREQUENT_CHECK;
		2381
		2382	ev_at (w) -= mn_now;
1747		2383
1748	ev_stop (EV_A_ (W)w);	2384	ev_stop (EV_A_ (W)w);
1749	}	2385	}
1750		2386
1751	void noinline	2387	void noinline
1752	ev_timer_again (EV_P_ ev_timer *w)	2388	ev_timer_again (EV_P_ ev_timer *w)
1753	{	2389	{
		2390	EV_FREQUENT_CHECK;
		2391
1754	if (ev_is_active (w))	2392	if (ev_is_active (w))
1755	{	2393	{
1756	if (w->repeat)	2394	if (w->repeat)
1757	{	2395	{
1758	((WT)w)->at = mn_now + w->repeat;	2396	ev_at (w) = mn_now + w->repeat;
		2397	ANHE_at_cache (timers [ev_active (w)]);
1759	adjustheap (timers, timercnt, ((W)w)->active - 1);	2398	adjustheap (timers, timercnt, ev_active (w));
1760	}	2399	}
1761	else	2400	else
1762	ev_timer_stop (EV_A_ w);	2401	ev_timer_stop (EV_A_ w);
1763	}	2402	}
1764	else if (w->repeat)	2403	else if (w->repeat)
1765	{	2404	{
1766	w->at = w->repeat;	2405	ev_at (w) = w->repeat;
1767	ev_timer_start (EV_A_ w);	2406	ev_timer_start (EV_A_ w);
1768	}	2407	}
		2408
		2409	EV_FREQUENT_CHECK;
1769	}	2410	}
1770		2411
1771	#if EV_PERIODIC_ENABLE	2412	#if EV_PERIODIC_ENABLE
1772	void noinline	2413	void noinline
1773	ev_periodic_start (EV_P_ ev_periodic *w)	2414	ev_periodic_start (EV_P_ ev_periodic *w)
1774	{	2415	{
1775	if (expect_false (ev_is_active (w)))	2416	if (expect_false (ev_is_active (w)))
1776	return;	2417	return;
1777		2418
1778	if (w->reschedule_cb)	2419	if (w->reschedule_cb)
1779	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2420	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1780	else if (w->interval)	2421	else if (w->interval)
1781	{	2422	{
1782	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2423	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1783	/* this formula differs from the one in periodic_reify because we do not always round up */	2424	/* this formula differs from the one in periodic_reify because we do not always round up */
1784	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2425	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1785	}	2426	}
1786	else	2427	else
1787	((WT)w)->at = w->offset;	2428	ev_at (w) = w->offset;
1788		2429
		2430	EV_FREQUENT_CHECK;
		2431
		2432	++periodiccnt;
1789	ev_start (EV_A_ (W)w, ++periodiccnt);	2433	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1790	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);	2434	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1791	periodics [periodiccnt - 1] = (WT)w;	2435	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1792	upheap (periodics, periodiccnt - 1);	2436	ANHE_at_cache (periodics [ev_active (w)]);
		2437	upheap (periodics, ev_active (w));
1793		2438
		2439	EV_FREQUENT_CHECK;
		2440
1794	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	2441	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1795	}	2442	}
1796		2443
1797	void noinline	2444	void noinline
1798	ev_periodic_stop (EV_P_ ev_periodic *w)	2445	ev_periodic_stop (EV_P_ ev_periodic *w)
1799	{	2446	{
1800	clear_pending (EV_A_ (W)w);	2447	clear_pending (EV_A_ (W)w);
1801	if (expect_false (!ev_is_active (w)))	2448	if (expect_false (!ev_is_active (w)))
1802	return;	2449	return;
1803		2450
1804	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));	2451	EV_FREQUENT_CHECK;
1805		2452
1806	{	2453	{
1807	int active = ((W)w)->active;	2454	int active = ev_active (w);
1808		2455
		2456	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2457
		2458	--periodiccnt;
		2459
1809	if (expect_true (--active < --periodiccnt))	2460	if (expect_true (active < periodiccnt + HEAP0))
1810	{	2461	{
1811	periodics [active] = periodics [periodiccnt];	2462	periodics [active] = periodics [periodiccnt + HEAP0];
1812	adjustheap (periodics, periodiccnt, active);	2463	adjustheap (periodics, periodiccnt, active);
1813	}	2464	}
1814	}	2465	}
1815		2466
		2467	EV_FREQUENT_CHECK;
		2468
1816	ev_stop (EV_A_ (W)w);	2469	ev_stop (EV_A_ (W)w);
1817	}	2470	}
1818		2471
1819	void noinline	2472	void noinline
1820	ev_periodic_again (EV_P_ ev_periodic *w)	2473	ev_periodic_again (EV_P_ ev_periodic *w)
…		…
1831		2484
1832	void noinline	2485	void noinline
1833	ev_signal_start (EV_P_ ev_signal *w)	2486	ev_signal_start (EV_P_ ev_signal *w)
1834	{	2487	{
1835	#if EV_MULTIPLICITY	2488	#if EV_MULTIPLICITY
1836	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2489	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1837	#endif	2490	#endif
1838	if (expect_false (ev_is_active (w)))	2491	if (expect_false (ev_is_active (w)))
1839	return;	2492	return;
1840		2493
1841	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2494	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
		2495
		2496	evpipe_init (EV_A);
		2497
		2498	EV_FREQUENT_CHECK;
1842		2499
1843	{	2500	{
1844	#ifndef _WIN32	2501	#ifndef _WIN32
1845	sigset_t full, prev;	2502	sigset_t full, prev;
1846	sigfillset (&full);	2503	sigfillset (&full);
1847	sigprocmask (SIG_SETMASK, &full, &prev);	2504	sigprocmask (SIG_SETMASK, &full, &prev);
1848	#endif	2505	#endif
1849		2506
1850	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2507	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
1851		2508
1852	#ifndef _WIN32	2509	#ifndef _WIN32
1853	sigprocmask (SIG_SETMASK, &prev, 0);	2510	sigprocmask (SIG_SETMASK, &prev, 0);
1854	#endif	2511	#endif
1855	}	2512	}
…		…
1858	wlist_add (&signals [w->signum - 1].head, (WL)w);	2515	wlist_add (&signals [w->signum - 1].head, (WL)w);
1859		2516
1860	if (!((WL)w)->next)	2517	if (!((WL)w)->next)
1861	{	2518	{
1862	#if _WIN32	2519	#if _WIN32
1863	signal (w->signum, sighandler);	2520	signal (w->signum, ev_sighandler);
1864	#else	2521	#else
1865	struct sigaction sa;	2522	struct sigaction sa;
1866	sa.sa_handler = sighandler;	2523	sa.sa_handler = ev_sighandler;
1867	sigfillset (&sa.sa_mask);	2524	sigfillset (&sa.sa_mask);
1868	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2525	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1869	sigaction (w->signum, &sa, 0);	2526	sigaction (w->signum, &sa, 0);
1870	#endif	2527	#endif
1871	}	2528	}
		2529
		2530	EV_FREQUENT_CHECK;
1872	}	2531	}
1873		2532
1874	void noinline	2533	void noinline
1875	ev_signal_stop (EV_P_ ev_signal *w)	2534	ev_signal_stop (EV_P_ ev_signal *w)
1876	{	2535	{
1877	clear_pending (EV_A_ (W)w);	2536	clear_pending (EV_A_ (W)w);
1878	if (expect_false (!ev_is_active (w)))	2537	if (expect_false (!ev_is_active (w)))
1879	return;	2538	return;
1880		2539
		2540	EV_FREQUENT_CHECK;
		2541
1881	wlist_del (&signals [w->signum - 1].head, (WL)w);	2542	wlist_del (&signals [w->signum - 1].head, (WL)w);
1882	ev_stop (EV_A_ (W)w);	2543	ev_stop (EV_A_ (W)w);
1883		2544
1884	if (!signals [w->signum - 1].head)	2545	if (!signals [w->signum - 1].head)
1885	signal (w->signum, SIG_DFL);	2546	signal (w->signum, SIG_DFL);
		2547
		2548	EV_FREQUENT_CHECK;
1886	}	2549	}
1887		2550
1888	void	2551	void
1889	ev_child_start (EV_P_ ev_child *w)	2552	ev_child_start (EV_P_ ev_child *w)
1890	{	2553	{
1891	#if EV_MULTIPLICITY	2554	#if EV_MULTIPLICITY
1892	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2555	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1893	#endif	2556	#endif
1894	if (expect_false (ev_is_active (w)))	2557	if (expect_false (ev_is_active (w)))
1895	return;	2558	return;
1896		2559
		2560	EV_FREQUENT_CHECK;
		2561
1897	ev_start (EV_A_ (W)w, 1);	2562	ev_start (EV_A_ (W)w, 1);
1898	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2563	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2564
		2565	EV_FREQUENT_CHECK;
1899	}	2566	}
1900		2567
1901	void	2568	void
1902	ev_child_stop (EV_P_ ev_child *w)	2569	ev_child_stop (EV_P_ ev_child *w)
1903	{	2570	{
1904	clear_pending (EV_A_ (W)w);	2571	clear_pending (EV_A_ (W)w);
1905	if (expect_false (!ev_is_active (w)))	2572	if (expect_false (!ev_is_active (w)))
1906	return;	2573	return;
1907		2574
		2575	EV_FREQUENT_CHECK;
		2576
1908	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2577	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1909	ev_stop (EV_A_ (W)w);	2578	ev_stop (EV_A_ (W)w);
		2579
		2580	EV_FREQUENT_CHECK;
1910	}	2581	}
1911		2582
1912	#if EV_STAT_ENABLE	2583	#if EV_STAT_ENABLE
1913		2584
1914	# ifdef _WIN32	2585	# ifdef _WIN32
1915	# undef lstat	2586	# undef lstat
1916	# define lstat(a,b) _stati64 (a,b)	2587	# define lstat(a,b) _stati64 (a,b)
1917	# endif	2588	# endif
1918		2589
1919	#define DEF_STAT_INTERVAL 5.0074891	2590	#define DEF_STAT_INTERVAL 5.0074891
		2591	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1920	#define MIN_STAT_INTERVAL 0.1074891	2592	#define MIN_STAT_INTERVAL 0.1074891
1921		2593
1922	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2594	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1923		2595
1924	#if EV_USE_INOTIFY	2596	#if EV_USE_INOTIFY
1925	# define EV_INOTIFY_BUFSIZE 8192	2597	# define EV_INOTIFY_BUFSIZE 8192
…		…
1929	{	2601	{
1930	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);	2602	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);
1931		2603
1932	if (w->wd < 0)	2604	if (w->wd < 0)
1933	{	2605	{
		2606	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1934	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2607	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1935		2608
1936	/* monitor some parent directory for speedup hints */	2609	/* monitor some parent directory for speedup hints */
		2610	/* note that exceeding the hardcoded path limit is not a correctness issue, */
		2611	/* but an efficiency issue only */
1937	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2612	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1938	{	2613	{
1939	char path [4096];	2614	char path [4096];
1940	strcpy (path, w->path);	2615	strcpy (path, w->path);
1941		2616
…		…
1944	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2619	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1945	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2620	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1946		2621
1947	char *pend = strrchr (path, '/');	2622	char *pend = strrchr (path, '/');
1948		2623
1949	if (!pend)	2624	if (!pend || pend == path)
1950	break; /* whoops, no '/', complain to your admin */	2625	break;
1951		2626
1952	*pend = 0;	2627	*pend = 0;
1953	w->wd = inotify_add_watch (fs_fd, path, mask);	2628	w->wd = inotify_add_watch (fs_fd, path, mask);
1954	}	2629	}
1955	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2630	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1956	}	2631	}
1957	}	2632	}
1958	else
1959	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1960		2633
1961	if (w->wd >= 0)	2634	if (w->wd >= 0)
		2635	{
1962	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2636	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2637
		2638	/* now local changes will be tracked by inotify, but remote changes won't */
		2639	/* unless the filesystem it known to be local, we therefore still poll */
		2640	/* also do poll on <2.6.25, but with normal frequency */
		2641	struct statfs sfs;
		2642
		2643	if (fs_2625 && !statfs (w->path, &sfs))
		2644	if (sfs.f_type == 0x1373 /* devfs */
		2645	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2646	|| sfs.f_type == 0x3153464a /* jfs */
		2647	|| sfs.f_type == 0x52654973 /* reiser3 */
		2648	|| sfs.f_type == 0x01021994 /* tempfs */
		2649	|| sfs.f_type == 0x58465342 /* xfs */)
		2650	return;
		2651
		2652	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2653	ev_timer_again (EV_A_ &w->timer);
		2654	}
1963	}	2655	}
1964		2656
1965	static void noinline	2657	static void noinline
1966	infy_del (EV_P_ ev_stat *w)	2658	infy_del (EV_P_ ev_stat *w)
1967	{	2659	{
…		…
1981		2673
1982	static void noinline	2674	static void noinline
1983	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2675	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1984	{	2676	{
1985	if (slot < 0)	2677	if (slot < 0)
1986	/* overflow, need to check for all hahs slots */	2678	/* overflow, need to check for all hash slots */
1987	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2679	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1988	infy_wd (EV_A_ slot, wd, ev);	2680	infy_wd (EV_A_ slot, wd, ev);
1989	else	2681	else
1990	{	2682	{
1991	WL w_;	2683	WL w_;
…		…
1997		2689
1998	if (w->wd == wd || wd == -1)	2690	if (w->wd == wd || wd == -1)
1999	{	2691	{
2000	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2692	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2001	{	2693	{
		2694	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2002	w->wd = -1;	2695	w->wd = -1;
2003	infy_add (EV_A_ w); /* re-add, no matter what */	2696	infy_add (EV_A_ w); /* re-add, no matter what */
2004	}	2697	}
2005		2698
2006	stat_timer_cb (EV_A_ &w->timer, 0);	2699	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2019		2712
2020	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2713	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2021	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2714	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2022	}	2715	}
2023		2716
2024	void inline_size	2717	inline_size void
		2718	check_2625 (EV_P)
		2719	{
		2720	/* kernels < 2.6.25 are borked
		2721	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2722	*/
		2723	struct utsname buf;
		2724	int major, minor, micro;
		2725
		2726	if (uname (&buf))
		2727	return;
		2728
		2729	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2730	return;
		2731
		2732	if (major < 2
		2733	|| (major == 2 && minor < 6)
		2734	|| (major == 2 && minor == 6 && micro < 25))
		2735	return;
		2736
		2737	fs_2625 = 1;
		2738	}
		2739
		2740	inline_size void
2025	infy_init (EV_P)	2741	infy_init (EV_P)
2026	{	2742	{
2027	if (fs_fd != -2)	2743	if (fs_fd != -2)
2028	return;	2744	return;
		2745
		2746	fs_fd = -1;
		2747
		2748	check_2625 (EV_A);
2029		2749
2030	fs_fd = inotify_init ();	2750	fs_fd = inotify_init ();
2031		2751
2032	if (fs_fd >= 0)	2752	if (fs_fd >= 0)
2033	{	2753	{
…		…
2035	ev_set_priority (&fs_w, EV_MAXPRI);	2755	ev_set_priority (&fs_w, EV_MAXPRI);
2036	ev_io_start (EV_A_ &fs_w);	2756	ev_io_start (EV_A_ &fs_w);
2037	}	2757	}
2038	}	2758	}
2039		2759
2040	void inline_size	2760	inline_size void
2041	infy_fork (EV_P)	2761	infy_fork (EV_P)
2042	{	2762	{
2043	int slot;	2763	int slot;
2044		2764
2045	if (fs_fd < 0)	2765	if (fs_fd < 0)
…		…
2061	w->wd = -1;	2781	w->wd = -1;
2062		2782
2063	if (fs_fd >= 0)	2783	if (fs_fd >= 0)
2064	infy_add (EV_A_ w); /* re-add, no matter what */	2784	infy_add (EV_A_ w); /* re-add, no matter what */
2065	else	2785	else
2066	ev_timer_start (EV_A_ &w->timer);	2786	ev_timer_again (EV_A_ &w->timer);
2067	}	2787	}
2068
2069	}	2788	}
2070	}	2789	}
2071		2790
		2791	#endif
		2792
		2793	#ifdef _WIN32
		2794	# define EV_LSTAT(p,b) _stati64 (p, b)
		2795	#else
		2796	# define EV_LSTAT(p,b) lstat (p, b)
2072	#endif	2797	#endif
2073		2798
2074	void	2799	void
2075	ev_stat_stat (EV_P_ ev_stat *w)	2800	ev_stat_stat (EV_P_ ev_stat *w)
2076	{	2801	{
…		…
2103	|| w->prev.st_atime != w->attr.st_atime	2828	|| w->prev.st_atime != w->attr.st_atime
2104	|| w->prev.st_mtime != w->attr.st_mtime	2829	|| w->prev.st_mtime != w->attr.st_mtime
2105	|| w->prev.st_ctime != w->attr.st_ctime	2830	|| w->prev.st_ctime != w->attr.st_ctime
2106	) {	2831	) {
2107	#if EV_USE_INOTIFY	2832	#if EV_USE_INOTIFY
		2833	if (fs_fd >= 0)
		2834	{
2108	infy_del (EV_A_ w);	2835	infy_del (EV_A_ w);
2109	infy_add (EV_A_ w);	2836	infy_add (EV_A_ w);
2110	ev_stat_stat (EV_A_ w); /* avoid race... */	2837	ev_stat_stat (EV_A_ w); /* avoid race... */
		2838	}
2111	#endif	2839	#endif
2112		2840
2113	ev_feed_event (EV_A_ w, EV_STAT);	2841	ev_feed_event (EV_A_ w, EV_STAT);
2114	}	2842	}
2115	}	2843	}
…		…
2118	ev_stat_start (EV_P_ ev_stat *w)	2846	ev_stat_start (EV_P_ ev_stat *w)
2119	{	2847	{
2120	if (expect_false (ev_is_active (w)))	2848	if (expect_false (ev_is_active (w)))
2121	return;	2849	return;
2122		2850
2123	/* since we use memcmp, we need to clear any padding data etc. */
2124	memset (&w->prev, 0, sizeof (ev_statdata));
2125	memset (&w->attr, 0, sizeof (ev_statdata));
2126
2127	ev_stat_stat (EV_A_ w);	2851	ev_stat_stat (EV_A_ w);
2128		2852
		2853	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2129	if (w->interval < MIN_STAT_INTERVAL)	2854	w->interval = MIN_STAT_INTERVAL;
2130	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2131		2855
2132	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2856	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2133	ev_set_priority (&w->timer, ev_priority (w));	2857	ev_set_priority (&w->timer, ev_priority (w));
2134		2858
2135	#if EV_USE_INOTIFY	2859	#if EV_USE_INOTIFY
2136	infy_init (EV_A);	2860	infy_init (EV_A);
2137		2861
2138	if (fs_fd >= 0)	2862	if (fs_fd >= 0)
2139	infy_add (EV_A_ w);	2863	infy_add (EV_A_ w);
2140	else	2864	else
2141	#endif	2865	#endif
2142	ev_timer_start (EV_A_ &w->timer);	2866	ev_timer_again (EV_A_ &w->timer);
2143		2867
2144	ev_start (EV_A_ (W)w, 1);	2868	ev_start (EV_A_ (W)w, 1);
		2869
		2870	EV_FREQUENT_CHECK;
2145	}	2871	}
2146		2872
2147	void	2873	void
2148	ev_stat_stop (EV_P_ ev_stat *w)	2874	ev_stat_stop (EV_P_ ev_stat *w)
2149	{	2875	{
2150	clear_pending (EV_A_ (W)w);	2876	clear_pending (EV_A_ (W)w);
2151	if (expect_false (!ev_is_active (w)))	2877	if (expect_false (!ev_is_active (w)))
2152	return;	2878	return;
2153		2879
		2880	EV_FREQUENT_CHECK;
		2881
2154	#if EV_USE_INOTIFY	2882	#if EV_USE_INOTIFY
2155	infy_del (EV_A_ w);	2883	infy_del (EV_A_ w);
2156	#endif	2884	#endif
2157	ev_timer_stop (EV_A_ &w->timer);	2885	ev_timer_stop (EV_A_ &w->timer);
2158		2886
2159	ev_stop (EV_A_ (W)w);	2887	ev_stop (EV_A_ (W)w);
		2888
		2889	EV_FREQUENT_CHECK;
2160	}	2890	}
2161	#endif	2891	#endif
2162		2892
2163	#if EV_IDLE_ENABLE	2893	#if EV_IDLE_ENABLE
2164	void	2894	void
…		…
2166	{	2896	{
2167	if (expect_false (ev_is_active (w)))	2897	if (expect_false (ev_is_active (w)))
2168	return;	2898	return;
2169		2899
2170	pri_adjust (EV_A_ (W)w);	2900	pri_adjust (EV_A_ (W)w);
		2901
		2902	EV_FREQUENT_CHECK;
2171		2903
2172	{	2904	{
2173	int active = ++idlecnt [ABSPRI (w)];	2905	int active = ++idlecnt [ABSPRI (w)];
2174		2906
2175	++idleall;	2907	++idleall;
2176	ev_start (EV_A_ (W)w, active);	2908	ev_start (EV_A_ (W)w, active);
2177		2909
2178	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	2910	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2179	idles [ABSPRI (w)][active - 1] = w;	2911	idles [ABSPRI (w)][active - 1] = w;
2180	}	2912	}
		2913
		2914	EV_FREQUENT_CHECK;
2181	}	2915	}
2182		2916
2183	void	2917	void
2184	ev_idle_stop (EV_P_ ev_idle *w)	2918	ev_idle_stop (EV_P_ ev_idle *w)
2185	{	2919	{
2186	clear_pending (EV_A_ (W)w);	2920	clear_pending (EV_A_ (W)w);
2187	if (expect_false (!ev_is_active (w)))	2921	if (expect_false (!ev_is_active (w)))
2188	return;	2922	return;
2189		2923
		2924	EV_FREQUENT_CHECK;
		2925
2190	{	2926	{
2191	int active = ((W)w)->active;	2927	int active = ev_active (w);
2192		2928
2193	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2929	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2194	((W)idles [ABSPRI (w)][active - 1])->active = active;	2930	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2195		2931
2196	ev_stop (EV_A_ (W)w);	2932	ev_stop (EV_A_ (W)w);
2197	--idleall;	2933	--idleall;
2198	}	2934	}
		2935
		2936	EV_FREQUENT_CHECK;
2199	}	2937	}
2200	#endif	2938	#endif
2201		2939
2202	void	2940	void
2203	ev_prepare_start (EV_P_ ev_prepare *w)	2941	ev_prepare_start (EV_P_ ev_prepare *w)
2204	{	2942	{
2205	if (expect_false (ev_is_active (w)))	2943	if (expect_false (ev_is_active (w)))
2206	return;	2944	return;
		2945
		2946	EV_FREQUENT_CHECK;
2207		2947
2208	ev_start (EV_A_ (W)w, ++preparecnt);	2948	ev_start (EV_A_ (W)w, ++preparecnt);
2209	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	2949	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2210	prepares [preparecnt - 1] = w;	2950	prepares [preparecnt - 1] = w;
		2951
		2952	EV_FREQUENT_CHECK;
2211	}	2953	}
2212		2954
2213	void	2955	void
2214	ev_prepare_stop (EV_P_ ev_prepare *w)	2956	ev_prepare_stop (EV_P_ ev_prepare *w)
2215	{	2957	{
2216	clear_pending (EV_A_ (W)w);	2958	clear_pending (EV_A_ (W)w);
2217	if (expect_false (!ev_is_active (w)))	2959	if (expect_false (!ev_is_active (w)))
2218	return;	2960	return;
2219		2961
		2962	EV_FREQUENT_CHECK;
		2963
2220	{	2964	{
2221	int active = ((W)w)->active;	2965	int active = ev_active (w);
		2966
2222	prepares [active - 1] = prepares [--preparecnt];	2967	prepares [active - 1] = prepares [--preparecnt];
2223	((W)prepares [active - 1])->active = active;	2968	ev_active (prepares [active - 1]) = active;
2224	}	2969	}
2225		2970
2226	ev_stop (EV_A_ (W)w);	2971	ev_stop (EV_A_ (W)w);
		2972
		2973	EV_FREQUENT_CHECK;
2227	}	2974	}
2228		2975
2229	void	2976	void
2230	ev_check_start (EV_P_ ev_check *w)	2977	ev_check_start (EV_P_ ev_check *w)
2231	{	2978	{
2232	if (expect_false (ev_is_active (w)))	2979	if (expect_false (ev_is_active (w)))
2233	return;	2980	return;
		2981
		2982	EV_FREQUENT_CHECK;
2234		2983
2235	ev_start (EV_A_ (W)w, ++checkcnt);	2984	ev_start (EV_A_ (W)w, ++checkcnt);
2236	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	2985	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2237	checks [checkcnt - 1] = w;	2986	checks [checkcnt - 1] = w;
		2987
		2988	EV_FREQUENT_CHECK;
2238	}	2989	}
2239		2990
2240	void	2991	void
2241	ev_check_stop (EV_P_ ev_check *w)	2992	ev_check_stop (EV_P_ ev_check *w)
2242	{	2993	{
2243	clear_pending (EV_A_ (W)w);	2994	clear_pending (EV_A_ (W)w);
2244	if (expect_false (!ev_is_active (w)))	2995	if (expect_false (!ev_is_active (w)))
2245	return;	2996	return;
2246		2997
		2998	EV_FREQUENT_CHECK;
		2999
2247	{	3000	{
2248	int active = ((W)w)->active;	3001	int active = ev_active (w);
		3002
2249	checks [active - 1] = checks [--checkcnt];	3003	checks [active - 1] = checks [--checkcnt];
2250	((W)checks [active - 1])->active = active;	3004	ev_active (checks [active - 1]) = active;
2251	}	3005	}
2252		3006
2253	ev_stop (EV_A_ (W)w);	3007	ev_stop (EV_A_ (W)w);
		3008
		3009	EV_FREQUENT_CHECK;
2254	}	3010	}
2255		3011
2256	#if EV_EMBED_ENABLE	3012	#if EV_EMBED_ENABLE
2257	void noinline	3013	void noinline
2258	ev_embed_sweep (EV_P_ ev_embed *w)	3014	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2266	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	3022	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2267		3023
2268	if (ev_cb (w))	3024	if (ev_cb (w))
2269	ev_feed_event (EV_A_ (W)w, EV_EMBED);	3025	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2270	else	3026	else
2271	ev_embed_sweep (loop, w);	3027	ev_loop (w->other, EVLOOP_NONBLOCK);
2272	}	3028	}
2273		3029
2274	static void	3030	static void
2275	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3031	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2276	{	3032	{
2277	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3033	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2278		3034
2279	fd_reify (w->other);	3035	{
		3036	struct ev_loop *loop = w->other;
		3037
		3038	while (fdchangecnt)
		3039	{
		3040	fd_reify (EV_A);
		3041	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3042	}
		3043	}
2280	}	3044	}
		3045
		3046	static void
		3047	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3048	{
		3049	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3050
		3051	ev_embed_stop (EV_A_ w);
		3052
		3053	{
		3054	struct ev_loop *loop = w->other;
		3055
		3056	ev_loop_fork (EV_A);
		3057	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3058	}
		3059
		3060	ev_embed_start (EV_A_ w);
		3061	}
		3062
		3063	#if 0
		3064	static void
		3065	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		3066	{
		3067	ev_idle_stop (EV_A_ idle);
		3068	}
		3069	#endif
2281		3070
2282	void	3071	void
2283	ev_embed_start (EV_P_ ev_embed *w)	3072	ev_embed_start (EV_P_ ev_embed *w)
2284	{	3073	{
2285	if (expect_false (ev_is_active (w)))	3074	if (expect_false (ev_is_active (w)))
2286	return;	3075	return;
2287		3076
2288	{	3077	{
2289	struct ev_loop *loop = w->other;	3078	struct ev_loop *loop = w->other;
2290	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3079	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2291	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3080	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2292	}	3081	}
		3082
		3083	EV_FREQUENT_CHECK;
2293		3084
2294	ev_set_priority (&w->io, ev_priority (w));	3085	ev_set_priority (&w->io, ev_priority (w));
2295	ev_io_start (EV_A_ &w->io);	3086	ev_io_start (EV_A_ &w->io);
2296		3087
2297	ev_prepare_init (&w->prepare, embed_prepare_cb);	3088	ev_prepare_init (&w->prepare, embed_prepare_cb);
2298	ev_set_priority (&w->prepare, EV_MINPRI);	3089	ev_set_priority (&w->prepare, EV_MINPRI);
2299	ev_prepare_start (EV_A_ &w->prepare);	3090	ev_prepare_start (EV_A_ &w->prepare);
2300		3091
		3092	ev_fork_init (&w->fork, embed_fork_cb);
		3093	ev_fork_start (EV_A_ &w->fork);
		3094
		3095	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		3096
2301	ev_start (EV_A_ (W)w, 1);	3097	ev_start (EV_A_ (W)w, 1);
		3098
		3099	EV_FREQUENT_CHECK;
2302	}	3100	}
2303		3101
2304	void	3102	void
2305	ev_embed_stop (EV_P_ ev_embed *w)	3103	ev_embed_stop (EV_P_ ev_embed *w)
2306	{	3104	{
2307	clear_pending (EV_A_ (W)w);	3105	clear_pending (EV_A_ (W)w);
2308	if (expect_false (!ev_is_active (w)))	3106	if (expect_false (!ev_is_active (w)))
2309	return;	3107	return;
2310		3108
		3109	EV_FREQUENT_CHECK;
		3110
2311	ev_io_stop (EV_A_ &w->io);	3111	ev_io_stop (EV_A_ &w->io);
2312	ev_prepare_stop (EV_A_ &w->prepare);	3112	ev_prepare_stop (EV_A_ &w->prepare);
		3113	ev_fork_stop (EV_A_ &w->fork);
2313		3114
2314	ev_stop (EV_A_ (W)w);	3115	EV_FREQUENT_CHECK;
2315	}	3116	}
2316	#endif	3117	#endif
2317		3118
2318	#if EV_FORK_ENABLE	3119	#if EV_FORK_ENABLE
2319	void	3120	void
2320	ev_fork_start (EV_P_ ev_fork *w)	3121	ev_fork_start (EV_P_ ev_fork *w)
2321	{	3122	{
2322	if (expect_false (ev_is_active (w)))	3123	if (expect_false (ev_is_active (w)))
2323	return;	3124	return;
		3125
		3126	EV_FREQUENT_CHECK;
2324		3127
2325	ev_start (EV_A_ (W)w, ++forkcnt);	3128	ev_start (EV_A_ (W)w, ++forkcnt);
2326	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3129	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2327	forks [forkcnt - 1] = w;	3130	forks [forkcnt - 1] = w;
		3131
		3132	EV_FREQUENT_CHECK;
2328	}	3133	}
2329		3134
2330	void	3135	void
2331	ev_fork_stop (EV_P_ ev_fork *w)	3136	ev_fork_stop (EV_P_ ev_fork *w)
2332	{	3137	{
2333	clear_pending (EV_A_ (W)w);	3138	clear_pending (EV_A_ (W)w);
2334	if (expect_false (!ev_is_active (w)))	3139	if (expect_false (!ev_is_active (w)))
2335	return;	3140	return;
2336		3141
		3142	EV_FREQUENT_CHECK;
		3143
2337	{	3144	{
2338	int active = ((W)w)->active;	3145	int active = ev_active (w);
		3146
2339	forks [active - 1] = forks [--forkcnt];	3147	forks [active - 1] = forks [--forkcnt];
2340	((W)forks [active - 1])->active = active;	3148	ev_active (forks [active - 1]) = active;
2341	}	3149	}
2342		3150
2343	ev_stop (EV_A_ (W)w);	3151	ev_stop (EV_A_ (W)w);
		3152
		3153	EV_FREQUENT_CHECK;
		3154	}
		3155	#endif
		3156
		3157	#if EV_ASYNC_ENABLE
		3158	void
		3159	ev_async_start (EV_P_ ev_async *w)
		3160	{
		3161	if (expect_false (ev_is_active (w)))
		3162	return;
		3163
		3164	evpipe_init (EV_A);
		3165
		3166	EV_FREQUENT_CHECK;
		3167
		3168	ev_start (EV_A_ (W)w, ++asynccnt);
		3169	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		3170	asyncs [asynccnt - 1] = w;
		3171
		3172	EV_FREQUENT_CHECK;
		3173	}
		3174
		3175	void
		3176	ev_async_stop (EV_P_ ev_async *w)
		3177	{
		3178	clear_pending (EV_A_ (W)w);
		3179	if (expect_false (!ev_is_active (w)))
		3180	return;
		3181
		3182	EV_FREQUENT_CHECK;
		3183
		3184	{
		3185	int active = ev_active (w);
		3186
		3187	asyncs [active - 1] = asyncs [--asynccnt];
		3188	ev_active (asyncs [active - 1]) = active;
		3189	}
		3190
		3191	ev_stop (EV_A_ (W)w);
		3192
		3193	EV_FREQUENT_CHECK;
		3194	}
		3195
		3196	void
		3197	ev_async_send (EV_P_ ev_async *w)
		3198	{
		3199	w->sent = 1;
		3200	evpipe_write (EV_A_ &gotasync);
2344	}	3201	}
2345	#endif	3202	#endif
2346		3203
2347	/*****************************************************************************/	3204	/*****************************************************************************/
2348		3205
…		…
2358	once_cb (EV_P_ struct ev_once *once, int revents)	3215	once_cb (EV_P_ struct ev_once *once, int revents)
2359	{	3216	{
2360	void (*cb)(int revents, void *arg) = once->cb;	3217	void (*cb)(int revents, void *arg) = once->cb;
2361	void *arg = once->arg;	3218	void *arg = once->arg;
2362		3219
2363	ev_io_stop (EV_A_ &once->io);	3220	ev_io_stop (EV_A_ &once->io);
2364	ev_timer_stop (EV_A_ &once->to);	3221	ev_timer_stop (EV_A_ &once->to);
2365	ev_free (once);	3222	ev_free (once);
2366		3223
2367	cb (revents, arg);	3224	cb (revents, arg);
2368	}	3225	}
2369		3226
2370	static void	3227	static void
2371	once_cb_io (EV_P_ ev_io *w, int revents)	3228	once_cb_io (EV_P_ ev_io *w, int revents)
2372	{	3229	{
2373	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3230	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3231
		3232	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2374	}	3233	}
2375		3234
2376	static void	3235	static void
2377	once_cb_to (EV_P_ ev_timer *w, int revents)	3236	once_cb_to (EV_P_ ev_timer *w, int revents)
2378	{	3237	{
2379	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3238	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3239
		3240	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2380	}	3241	}
2381		3242
2382	void	3243	void
2383	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3244	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2384	{	3245	{
…		…
2406	ev_timer_set (&once->to, timeout, 0.);	3267	ev_timer_set (&once->to, timeout, 0.);
2407	ev_timer_start (EV_A_ &once->to);	3268	ev_timer_start (EV_A_ &once->to);
2408	}	3269	}
2409	}	3270	}
2410		3271
		3272	/*****************************************************************************/
		3273
		3274	#if EV_WALK_ENABLE
		3275	void
		3276	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3277	{
		3278	int i, j;
		3279	ev_watcher_list *wl, *wn;
		3280
		3281	if (types & (EV_IO | EV_EMBED))
		3282	for (i = 0; i < anfdmax; ++i)
		3283	for (wl = anfds [i].head; wl; )
		3284	{
		3285	wn = wl->next;
		3286
		3287	#if EV_EMBED_ENABLE
		3288	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3289	{
		3290	if (types & EV_EMBED)
		3291	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3292	}
		3293	else
		3294	#endif
		3295	#if EV_USE_INOTIFY
		3296	if (ev_cb ((ev_io *)wl) == infy_cb)
		3297	;
		3298	else
		3299	#endif
		3300	if ((ev_io *)wl != &pipe_w)
		3301	if (types & EV_IO)
		3302	cb (EV_A_ EV_IO, wl);
		3303
		3304	wl = wn;
		3305	}
		3306
		3307	if (types & (EV_TIMER | EV_STAT))
		3308	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3309	#if EV_STAT_ENABLE
		3310	/*TODO: timer is not always active*/
		3311	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3312	{
		3313	if (types & EV_STAT)
		3314	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3315	}
		3316	else
		3317	#endif
		3318	if (types & EV_TIMER)
		3319	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3320
		3321	#if EV_PERIODIC_ENABLE
		3322	if (types & EV_PERIODIC)
		3323	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3324	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3325	#endif
		3326
		3327	#if EV_IDLE_ENABLE
		3328	if (types & EV_IDLE)
		3329	for (j = NUMPRI; i--; )
		3330	for (i = idlecnt [j]; i--; )
		3331	cb (EV_A_ EV_IDLE, idles [j][i]);
		3332	#endif
		3333
		3334	#if EV_FORK_ENABLE
		3335	if (types & EV_FORK)
		3336	for (i = forkcnt; i--; )
		3337	if (ev_cb (forks [i]) != embed_fork_cb)
		3338	cb (EV_A_ EV_FORK, forks [i]);
		3339	#endif
		3340
		3341	#if EV_ASYNC_ENABLE
		3342	if (types & EV_ASYNC)
		3343	for (i = asynccnt; i--; )
		3344	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3345	#endif
		3346
		3347	if (types & EV_PREPARE)
		3348	for (i = preparecnt; i--; )
		3349	#if EV_EMBED_ENABLE
		3350	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3351	#endif
		3352	cb (EV_A_ EV_PREPARE, prepares [i]);
		3353
		3354	if (types & EV_CHECK)
		3355	for (i = checkcnt; i--; )
		3356	cb (EV_A_ EV_CHECK, checks [i]);
		3357
		3358	if (types & EV_SIGNAL)
		3359	for (i = 0; i < signalmax; ++i)
		3360	for (wl = signals [i].head; wl; )
		3361	{
		3362	wn = wl->next;
		3363	cb (EV_A_ EV_SIGNAL, wl);
		3364	wl = wn;
		3365	}
		3366
		3367	if (types & EV_CHILD)
		3368	for (i = EV_PID_HASHSIZE; i--; )
		3369	for (wl = childs [i]; wl; )
		3370	{
		3371	wn = wl->next;
		3372	cb (EV_A_ EV_CHILD, wl);
		3373	wl = wn;
		3374	}
		3375	/* EV_STAT 0x00001000 /* stat data changed */
		3376	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3377	}
		3378	#endif
		3379
2411	#if EV_MULTIPLICITY	3380	#if EV_MULTIPLICITY
2412	#include "ev_wrap.h"	3381	#include "ev_wrap.h"
2413	#endif	3382	#endif
2414		3383
2415	#ifdef __cplusplus	3384	#ifdef __cplusplus

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