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Comparing libev/ev.c (file contents):
Revision 1.180 by root, Tue Dec 11 22:04:55 2007 UTC vs.
Revision 1.296 by root, Thu Jul 9 09:11:20 2009 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* modification, are permitted provided that the following conditions are	8	* tion, are permitted provided that the following conditions are met:
9	* met:	9	*
		10	* 1. Redistributions of source code must retain the above copyright notice,
		11	* this list of conditions and the following disclaimer.
		12	*
		13	* 2. Redistributions in binary form must reproduce the above copyright
		14	* notice, this list of conditions and the following disclaimer in the
		15	* documentation and/or other materials provided with the distribution.
		16	*
		17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
		18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
		19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
		20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
		21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
		22	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
		23	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
		24	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
		25	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
		26	* OF THE POSSIBILITY OF SUCH DAMAGE.
10	*	27	*
11	* * Redistributions of source code must retain the above copyright	28	* Alternatively, the contents of this file may be used under the terms of
12	* notice, this list of conditions and the following disclaimer.	29	* the GNU General Public License ("GPL") version 2 or any later version,
13	*	30	* in which case the provisions of the GPL are applicable instead of
14	* * Redistributions in binary form must reproduce the above	31	* the above. If you wish to allow the use of your version of this file
15	* copyright notice, this list of conditions and the following	32	* only under the terms of the GPL and not to allow others to use your
16	* disclaimer in the documentation and/or other materials provided	33	* version of this file under the BSD license, indicate your decision
17	* with the distribution.	34	* by deleting the provisions above and replace them with the notice
18	*	35	* and other provisions required by the GPL. If you do not delete the
19	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS	36	* provisions above, a recipient may use your version of this file under
20	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT	37	* either the BSD or the GPL.
21	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	38	*/
31		39
32	#ifdef __cplusplus	40	#ifdef __cplusplus
33	extern "C" {	41	extern "C" {
34	#endif	42	#endif
35		43
		44	/* this big block deduces configuration from config.h */
36	#ifndef EV_STANDALONE	45	#ifndef EV_STANDALONE
37	# ifdef EV_CONFIG_H	46	# ifdef EV_CONFIG_H
38	# include EV_CONFIG_H	47	# include EV_CONFIG_H
39	# else	48	# else
40	# include "config.h"	49	# include "config.h"
41	# endif	50	# endif
42		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
		64	# endif
		65
43	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
44	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
45	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
46	# endif	69	# endif
47	# ifndef EV_USE_REALTIME	70	# ifndef EV_USE_REALTIME
48	# define EV_USE_REALTIME 1	71	# define EV_USE_REALTIME 0
49	# endif	72	# endif
50	# else	73	# else
51	# ifndef EV_USE_MONOTONIC	74	# ifndef EV_USE_MONOTONIC
52	# define EV_USE_MONOTONIC 0	75	# define EV_USE_MONOTONIC 0
53	# endif	76	# endif
54	# ifndef EV_USE_REALTIME	77	# ifndef EV_USE_REALTIME
55	# define EV_USE_REALTIME 0	78	# define EV_USE_REALTIME 0
		79	# endif
		80	# endif
		81
		82	# ifndef EV_USE_NANOSLEEP
		83	# if HAVE_NANOSLEEP
		84	# define EV_USE_NANOSLEEP 1
		85	# else
		86	# define EV_USE_NANOSLEEP 0
56	# endif	87	# endif
57	# endif	88	# endif
58		89
59	# ifndef EV_USE_SELECT	90	# ifndef EV_USE_SELECT
60	# if HAVE_SELECT && HAVE_SYS_SELECT_H	91	# if HAVE_SELECT && HAVE_SYS_SELECT_H
…		…
102	# else	133	# else
103	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
104	# endif	135	# endif
105	# endif	136	# endif
106		137
		138	# ifndef EV_USE_EVENTFD
		139	# if HAVE_EVENTFD
		140	# define EV_USE_EVENTFD 1
		141	# else
		142	# define EV_USE_EVENTFD 0
		143	# endif
		144	# endif
		145
107	#endif	146	#endif
108		147
109	#include <math.h>	148	#include <math.h>
110	#include <stdlib.h>	149	#include <stdlib.h>
111	#include <fcntl.h>	150	#include <fcntl.h>
…		…
129	#ifndef _WIN32	168	#ifndef _WIN32
130	# include <sys/time.h>	169	# include <sys/time.h>
131	# include <sys/wait.h>	170	# include <sys/wait.h>
132	# include <unistd.h>	171	# include <unistd.h>
133	#else	172	#else
		173	# include <io.h>
134	# define WIN32_LEAN_AND_MEAN	174	# define WIN32_LEAN_AND_MEAN
135	# include <windows.h>	175	# include <windows.h>
136	# ifndef EV_SELECT_IS_WINSOCKET	176	# ifndef EV_SELECT_IS_WINSOCKET
137	# define EV_SELECT_IS_WINSOCKET 1	177	# define EV_SELECT_IS_WINSOCKET 1
138	# endif	178	# endif
139	#endif	179	#endif
140		180
141	/**/	181	/* this block tries to deduce configuration from header-defined symbols and defaults */
		182
		183	#ifndef EV_USE_CLOCK_SYSCALL
		184	# if __linux && __GLIBC__ >= 2
		185	# define EV_USE_CLOCK_SYSCALL 1
		186	# else
		187	# define EV_USE_CLOCK_SYSCALL 0
		188	# endif
		189	#endif
142		190
143	#ifndef EV_USE_MONOTONIC	191	#ifndef EV_USE_MONOTONIC
		192	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		193	# define EV_USE_MONOTONIC 1
		194	# else
144	# define EV_USE_MONOTONIC 0	195	# define EV_USE_MONOTONIC 0
		196	# endif
145	#endif	197	#endif
146		198
147	#ifndef EV_USE_REALTIME	199	#ifndef EV_USE_REALTIME
148	# define EV_USE_REALTIME 0	200	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
		201	#endif
		202
		203	#ifndef EV_USE_NANOSLEEP
		204	# if _POSIX_C_SOURCE >= 199309L
		205	# define EV_USE_NANOSLEEP 1
		206	# else
		207	# define EV_USE_NANOSLEEP 0
		208	# endif
149	#endif	209	#endif
150		210
151	#ifndef EV_USE_SELECT	211	#ifndef EV_USE_SELECT
152	# define EV_USE_SELECT 1	212	# define EV_USE_SELECT 1
153	#endif	213	#endif
…		…
159	# define EV_USE_POLL 1	219	# define EV_USE_POLL 1
160	# endif	220	# endif
161	#endif	221	#endif
162		222
163	#ifndef EV_USE_EPOLL	223	#ifndef EV_USE_EPOLL
		224	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		225	# define EV_USE_EPOLL 1
		226	# else
164	# define EV_USE_EPOLL 0	227	# define EV_USE_EPOLL 0
		228	# endif
165	#endif	229	#endif
166		230
167	#ifndef EV_USE_KQUEUE	231	#ifndef EV_USE_KQUEUE
168	# define EV_USE_KQUEUE 0	232	# define EV_USE_KQUEUE 0
169	#endif	233	#endif
…		…
171	#ifndef EV_USE_PORT	235	#ifndef EV_USE_PORT
172	# define EV_USE_PORT 0	236	# define EV_USE_PORT 0
173	#endif	237	#endif
174		238
175	#ifndef EV_USE_INOTIFY	239	#ifndef EV_USE_INOTIFY
		240	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		241	# define EV_USE_INOTIFY 1
		242	# else
176	# define EV_USE_INOTIFY 0	243	# define EV_USE_INOTIFY 0
		244	# endif
177	#endif	245	#endif
178		246
179	#ifndef EV_PID_HASHSIZE	247	#ifndef EV_PID_HASHSIZE
180	# if EV_MINIMAL	248	# if EV_MINIMAL
181	# define EV_PID_HASHSIZE 1	249	# define EV_PID_HASHSIZE 1
…		…
190	# else	258	# else
191	# define EV_INOTIFY_HASHSIZE 16	259	# define EV_INOTIFY_HASHSIZE 16
192	# endif	260	# endif
193	#endif	261	#endif
194		262
195	/**/	263	#ifndef EV_USE_EVENTFD
		264	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		265	# define EV_USE_EVENTFD 1
		266	# else
		267	# define EV_USE_EVENTFD 0
		268	# endif
		269	#endif
		270
		271	#if 0 /* debugging */
		272	# define EV_VERIFY 3
		273	# define EV_USE_4HEAP 1
		274	# define EV_HEAP_CACHE_AT 1
		275	#endif
		276
		277	#ifndef EV_VERIFY
		278	# define EV_VERIFY !EV_MINIMAL
		279	#endif
		280
		281	#ifndef EV_USE_4HEAP
		282	# define EV_USE_4HEAP !EV_MINIMAL
		283	#endif
		284
		285	#ifndef EV_HEAP_CACHE_AT
		286	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		287	#endif
		288
		289	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		290	/* which makes programs even slower. might work on other unices, too. */
		291	#if EV_USE_CLOCK_SYSCALL
		292	# include <syscall.h>
		293	# ifdef SYS_clock_gettime
		294	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		295	# undef EV_USE_MONOTONIC
		296	# define EV_USE_MONOTONIC 1
		297	# else
		298	# undef EV_USE_CLOCK_SYSCALL
		299	# define EV_USE_CLOCK_SYSCALL 0
		300	# endif
		301	#endif
		302
		303	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
196		304
197	#ifndef CLOCK_MONOTONIC	305	#ifndef CLOCK_MONOTONIC
198	# undef EV_USE_MONOTONIC	306	# undef EV_USE_MONOTONIC
199	# define EV_USE_MONOTONIC 0	307	# define EV_USE_MONOTONIC 0
200	#endif	308	#endif
…		…
202	#ifndef CLOCK_REALTIME	310	#ifndef CLOCK_REALTIME
203	# undef EV_USE_REALTIME	311	# undef EV_USE_REALTIME
204	# define EV_USE_REALTIME 0	312	# define EV_USE_REALTIME 0
205	#endif	313	#endif
206		314
		315	#if !EV_STAT_ENABLE
		316	# undef EV_USE_INOTIFY
		317	# define EV_USE_INOTIFY 0
		318	#endif
		319
		320	#if !EV_USE_NANOSLEEP
		321	# ifndef _WIN32
		322	# include <sys/select.h>
		323	# endif
		324	#endif
		325
		326	#if EV_USE_INOTIFY
		327	# include <sys/utsname.h>
		328	# include <sys/statfs.h>
		329	# include <sys/inotify.h>
		330	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		331	# ifndef IN_DONT_FOLLOW
		332	# undef EV_USE_INOTIFY
		333	# define EV_USE_INOTIFY 0
		334	# endif
		335	#endif
		336
207	#if EV_SELECT_IS_WINSOCKET	337	#if EV_SELECT_IS_WINSOCKET
208	# include <winsock.h>	338	# include <winsock.h>
209	#endif	339	#endif
210		340
211	#if !EV_STAT_ENABLE	341	#if EV_USE_EVENTFD
212	# define EV_USE_INOTIFY 0	342	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		343	# include <stdint.h>
		344	# ifdef __cplusplus
		345	extern "C" {
213	#endif	346	# endif
214		347	int eventfd (unsigned int initval, int flags);
215	#if EV_USE_INOTIFY	348	# ifdef __cplusplus
216	# include <sys/inotify.h>	349	}
		350	# endif
217	#endif	351	#endif
218		352
219	/**/	353	/**/
		354
		355	#if EV_VERIFY >= 3
		356	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		357	#else
		358	# define EV_FREQUENT_CHECK do { } while (0)
		359	#endif
220		360
221	/*	361	/*
222	* This is used to avoid floating point rounding problems.	362	* This is used to avoid floating point rounding problems.
223	* It is added to ev_rt_now when scheduling periodics	363	* It is added to ev_rt_now when scheduling periodics
224	* to ensure progress, time-wise, even when rounding	364	* to ensure progress, time-wise, even when rounding
…		…
230		370
231	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	371	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
232	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	372	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
233	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */	373	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
234		374
235	#if __GNUC__ >= 3	375	#if __GNUC__ >= 4
236	# define expect(expr,value) __builtin_expect ((expr),(value))	376	# define expect(expr,value) __builtin_expect ((expr),(value))
237	# define noinline __attribute__ ((noinline))	377	# define noinline __attribute__ ((noinline))
238	#else	378	#else
239	# define expect(expr,value) (expr)	379	# define expect(expr,value) (expr)
240	# define noinline	380	# define noinline
241	# if __STDC_VERSION__ < 199901L	381	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
242	# define inline	382	# define inline
243	# endif	383	# endif
244	#endif	384	#endif
245		385
246	#define expect_false(expr) expect ((expr) != 0, 0)	386	#define expect_false(expr) expect ((expr) != 0, 0)
…		…
251	# define inline_speed static noinline	391	# define inline_speed static noinline
252	#else	392	#else
253	# define inline_speed static inline	393	# define inline_speed static inline
254	#endif	394	#endif
255		395
256	#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
257	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	401	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		402	#endif
258		403
259	#define EMPTY /* required for microsofts broken pseudo-c compiler */	404	#define EMPTY /* required for microsofts broken pseudo-c compiler */
260	#define EMPTY2(a,b) /* used to suppress some warnings */	405	#define EMPTY2(a,b) /* used to suppress some warnings */
261		406
262	typedef ev_watcher *W;	407	typedef ev_watcher *W;
263	typedef ev_watcher_list *WL;	408	typedef ev_watcher_list *WL;
264	typedef ev_watcher_time *WT;	409	typedef ev_watcher_time *WT;
265		410
		411	#define ev_active(w) ((W)(w))->active
		412	#define ev_at(w) ((WT)(w))->at
		413
		414	#if EV_USE_REALTIME
		415	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		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
266	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	421	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		422	#endif
267		423
268	#ifdef _WIN32	424	#ifdef _WIN32
269	# include "ev_win32.c"	425	# include "ev_win32.c"
270	#endif	426	#endif
271		427
…		…
278	{	434	{
279	syserr_cb = cb;	435	syserr_cb = cb;
280	}	436	}
281		437
282	static void noinline	438	static void noinline
283	syserr (const char *msg)	439	ev_syserr (const char *msg)
284	{	440	{
285	if (!msg)	441	if (!msg)
286	msg = "(libev) system error";	442	msg = "(libev) system error";
287		443
288	if (syserr_cb)	444	if (syserr_cb)
…		…
292	perror (msg);	448	perror (msg);
293	abort ();	449	abort ();
294	}	450	}
295	}	451	}
296		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
297	static void *(*alloc)(void *ptr, long size);	468	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
298		469
299	void	470	void
300	ev_set_allocator (void *(*cb)(void *ptr, long size))	471	ev_set_allocator (void *(*cb)(void *ptr, long size))
301	{	472	{
302	alloc = cb;	473	alloc = cb;
303	}	474	}
304		475
305	inline_speed void *	476	inline_speed void *
306	ev_realloc (void *ptr, long size)	477	ev_realloc (void *ptr, long size)
307	{	478	{
308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	479	ptr = alloc (ptr, size);
309		480
310	if (!ptr && size)	481	if (!ptr && size)
311	{	482	{
312	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	483	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
313	abort ();	484	abort ();
…		…
319	#define ev_malloc(size) ev_realloc (0, (size))	490	#define ev_malloc(size) ev_realloc (0, (size))
320	#define ev_free(ptr) ev_realloc ((ptr), 0)	491	#define ev_free(ptr) ev_realloc ((ptr), 0)
321		492
322	/*****************************************************************************/	493	/*****************************************************************************/
323		494
		495	/* file descriptor info structure */
324	typedef struct	496	typedef struct
325	{	497	{
326	WL head;	498	WL head;
327	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 */
328	unsigned char reify;	502	unsigned char unused;
		503	#if EV_USE_EPOLL
		504	unsigned int egen; /* generation counter to counter epoll bugs */
		505	#endif
329	#if EV_SELECT_IS_WINSOCKET	506	#if EV_SELECT_IS_WINSOCKET
330	SOCKET handle;	507	SOCKET handle;
331	#endif	508	#endif
332	} ANFD;	509	} ANFD;
333		510
		511	/* stores the pending event set for a given watcher */
334	typedef struct	512	typedef struct
335	{	513	{
336	W w;	514	W w;
337	int events;	515	int events; /* the pending event set for the given watcher */
338	} ANPENDING;	516	} ANPENDING;
339		517
340	#if EV_USE_INOTIFY	518	#if EV_USE_INOTIFY
		519	/* hash table entry per inotify-id */
341	typedef struct	520	typedef struct
342	{	521	{
343	WL head;	522	WL head;
344	} 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)
345	#endif	544	#endif
346		545
347	#if EV_MULTIPLICITY	546	#if EV_MULTIPLICITY
348		547
349	struct ev_loop	548	struct ev_loop
…		…
370		569
371	#endif	570	#endif
372		571
373	/*****************************************************************************/	572	/*****************************************************************************/
374		573
		574	#ifndef EV_HAVE_EV_TIME
375	ev_tstamp	575	ev_tstamp
376	ev_time (void)	576	ev_time (void)
377	{	577	{
378	#if EV_USE_REALTIME	578	#if EV_USE_REALTIME
		579	if (expect_true (have_realtime))
		580	{
379	struct timespec ts;	581	struct timespec ts;
380	clock_gettime (CLOCK_REALTIME, &ts);	582	clock_gettime (CLOCK_REALTIME, &ts);
381	return ts.tv_sec + ts.tv_nsec * 1e-9;	583	return ts.tv_sec + ts.tv_nsec * 1e-9;
382	#else	584	}
		585	#endif
		586
383	struct timeval tv;	587	struct timeval tv;
384	gettimeofday (&tv, 0);	588	gettimeofday (&tv, 0);
385	return tv.tv_sec + tv.tv_usec * 1e-6;	589	return tv.tv_sec + tv.tv_usec * 1e-6;
386	#endif
387	}	590	}
		591	#endif
388		592
389	ev_tstamp inline_size	593	inline_size ev_tstamp
390	get_clock (void)	594	get_clock (void)
391	{	595	{
392	#if EV_USE_MONOTONIC	596	#if EV_USE_MONOTONIC
393	if (expect_true (have_monotonic))	597	if (expect_true (have_monotonic))
394	{	598	{
…		…
407	{	611	{
408	return ev_rt_now;	612	return ev_rt_now;
409	}	613	}
410	#endif	614	#endif
411		615
412	int inline_size	616	void
		617	ev_sleep (ev_tstamp delay)
		618	{
		619	if (delay > 0.)
		620	{
		621	#if EV_USE_NANOSLEEP
		622	struct timespec ts;
		623
		624	ts.tv_sec = (time_t)delay;
		625	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		626
		627	nanosleep (&ts, 0);
		628	#elif defined(_WIN32)
		629	Sleep ((unsigned long)(delay * 1e3));
		630	#else
		631	struct timeval tv;
		632
		633	tv.tv_sec = (time_t)delay;
		634	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		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 */
		639	select (0, 0, 0, 0, &tv);
		640	#endif
		641	}
		642	}
		643
		644	/*****************************************************************************/
		645
		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
413	array_nextsize (int elem, int cur, int cnt)	651	array_nextsize (int elem, int cur, int cnt)
414	{	652	{
415	int ncur = cur + 1;	653	int ncur = cur + 1;
416		654
417	do	655	do
418	ncur <<= 1;	656	ncur <<= 1;
419	while (cnt > ncur);	657	while (cnt > ncur);
420		658
421	/* 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 */
422	if (elem * ncur > 4096)	660	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
423	{	661	{
424	ncur *= elem;	662	ncur *= elem;
425	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	663	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
426	ncur = ncur - sizeof (void *) * 4;	664	ncur = ncur - sizeof (void *) * 4;
427	ncur /= elem;	665	ncur /= elem;
428	}	666	}
429		667
430	return ncur;	668	return ncur;
…		…
434	array_realloc (int elem, void *base, int *cur, int cnt)	672	array_realloc (int elem, void *base, int *cur, int cnt)
435	{	673	{
436	*cur = array_nextsize (elem, *cur, cnt);	674	*cur = array_nextsize (elem, *cur, cnt);
437	return ev_realloc (base, elem * *cur);	675	return ev_realloc (base, elem * *cur);
438	}	676	}
		677
		678	#define array_init_zero(base,count) \
		679	memset ((void *)(base), 0, sizeof (*(base)) * (count))
439		680
440	#define array_needsize(type,base,cur,cnt,init) \	681	#define array_needsize(type,base,cur,cnt,init) \
441	if (expect_false ((cnt) > (cur))) \	682	if (expect_false ((cnt) > (cur))) \
442	{ \	683	{ \
443	int ocur_ = (cur); \	684	int ocur_ = (cur); \
…		…
455	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	696	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
456	}	697	}
457	#endif	698	#endif
458		699
459	#define array_free(stem, idx) \	700	#define array_free(stem, idx) \
460	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
461		702
462	/*****************************************************************************/	703	/*****************************************************************************/
		704
		705	/* dummy callback for pending events */
		706	static void noinline
		707	pendingcb (EV_P_ ev_prepare *w, int revents)
		708	{
		709	}
463		710
464	void noinline	711	void noinline
465	ev_feed_event (EV_P_ void *w, int revents)	712	ev_feed_event (EV_P_ void *w, int revents)
466	{	713	{
467	W w_ = (W)w;	714	W w_ = (W)w;
…		…
476	pendings [pri][w_->pending - 1].w = w_;	723	pendings [pri][w_->pending - 1].w = w_;
477	pendings [pri][w_->pending - 1].events = revents;	724	pendings [pri][w_->pending - 1].events = revents;
478	}	725	}
479	}	726	}
480		727
481	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
482	queue_events (EV_P_ W *events, int eventcnt, int type)	744	queue_events (EV_P_ W *events, int eventcnt, int type)
483	{	745	{
484	int i;	746	int i;
485		747
486	for (i = 0; i < eventcnt; ++i)	748	for (i = 0; i < eventcnt; ++i)
487	ev_feed_event (EV_A_ events [i], type);	749	ev_feed_event (EV_A_ events [i], type);
488	}	750	}
489		751
490	/*****************************************************************************/	752	/*****************************************************************************/
491		753
492	void inline_size	754	inline_speed void
493	anfds_init (ANFD *base, int count)
494	{
495	while (count--)
496	{
497	base->head = 0;
498	base->events = EV_NONE;
499	base->reify = 0;
500
501	++base;
502	}
503	}
504
505	void inline_speed
506	fd_event (EV_P_ int fd, int revents)	755	fd_event (EV_P_ int fd, int revents)
507	{	756	{
508	ANFD *anfd = anfds + fd;	757	ANFD *anfd = anfds + fd;
509	ev_io *w;	758	ev_io *w;
510		759
…		…
522	{	771	{
523	if (fd >= 0 && fd < anfdmax)	772	if (fd >= 0 && fd < anfdmax)
524	fd_event (EV_A_ fd, revents);	773	fd_event (EV_A_ fd, revents);
525	}	774	}
526		775
527	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
528	fd_reify (EV_P)	779	fd_reify (EV_P)
529	{	780	{
530	int i;	781	int i;
531		782
532	for (i = 0; i < fdchangecnt; ++i)	783	for (i = 0; i < fdchangecnt; ++i)
533	{	784	{
534	int fd = fdchanges [i];	785	int fd = fdchanges [i];
535	ANFD *anfd = anfds + fd;	786	ANFD *anfd = anfds + fd;
536	ev_io *w;	787	ev_io *w;
537		788
538	int events = 0;	789	unsigned char events = 0;
539		790
540	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	791	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
541	events |= w->events;	792	events |= (unsigned char)w->events;
542		793
543	#if EV_SELECT_IS_WINSOCKET	794	#if EV_SELECT_IS_WINSOCKET
544	if (events)	795	if (events)
545	{	796	{
546	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
547	anfd->handle = _get_osfhandle (fd);	801	anfd->handle = _get_osfhandle (fd);
		802	#endif
548	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));
549	}	804	}
550	#endif	805	#endif
551		806
		807	{
		808	unsigned char o_events = anfd->events;
		809	unsigned char o_reify = anfd->reify;
		810
552	anfd->reify = 0;	811	anfd->reify = 0;
553
554	backend_modify (EV_A_ fd, anfd->events, events);
555	anfd->events = events;	812	anfd->events = events;
		813
		814	if (o_events != events || o_reify & EV__IOFDSET)
		815	backend_modify (EV_A_ fd, o_events, events);
		816	}
556	}	817	}
557		818
558	fdchangecnt = 0;	819	fdchangecnt = 0;
559	}	820	}
560		821
561	void inline_size	822	/* something about the given fd changed */
		823	inline_size void
562	fd_change (EV_P_ int fd)	824	fd_change (EV_P_ int fd, int flags)
563	{	825	{
564	if (expect_false (anfds [fd].reify))	826	unsigned char reify = anfds [fd].reify;
565	return;
566
567	anfds [fd].reify = 1;	827	anfds [fd].reify |= flags;
568		828
		829	if (expect_true (!reify))
		830	{
569	++fdchangecnt;	831	++fdchangecnt;
570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	832	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
571	fdchanges [fdchangecnt - 1] = fd;	833	fdchanges [fdchangecnt - 1] = fd;
		834	}
572	}	835	}
573		836
574	void inline_speed	837	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		838	inline_speed void
575	fd_kill (EV_P_ int fd)	839	fd_kill (EV_P_ int fd)
576	{	840	{
577	ev_io *w;	841	ev_io *w;
578		842
579	while ((w = (ev_io *)anfds [fd].head))	843	while ((w = (ev_io *)anfds [fd].head))
…		…
581	ev_io_stop (EV_A_ w);	845	ev_io_stop (EV_A_ w);
582	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);
583	}	847	}
584	}	848	}
585		849
586	int inline_size	850	/* check whether the given fd is atcually valid, for error recovery */
		851	inline_size int
587	fd_valid (int fd)	852	fd_valid (int fd)
588	{	853	{
589	#ifdef _WIN32	854	#ifdef _WIN32
590	return _get_osfhandle (fd) != -1;	855	return _get_osfhandle (fd) != -1;
591	#else	856	#else
…		…
599	{	864	{
600	int fd;	865	int fd;
601		866
602	for (fd = 0; fd < anfdmax; ++fd)	867	for (fd = 0; fd < anfdmax; ++fd)
603	if (anfds [fd].events)	868	if (anfds [fd].events)
604	if (!fd_valid (fd) == -1 && errno == EBADF)	869	if (!fd_valid (fd) && errno == EBADF)
605	fd_kill (EV_A_ fd);	870	fd_kill (EV_A_ fd);
606	}	871	}
607		872
608	/* 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 */
609	static void noinline	874	static void noinline
…		…
627		892
628	for (fd = 0; fd < anfdmax; ++fd)	893	for (fd = 0; fd < anfdmax; ++fd)
629	if (anfds [fd].events)	894	if (anfds [fd].events)
630	{	895	{
631	anfds [fd].events = 0;	896	anfds [fd].events = 0;
		897	anfds [fd].emask = 0;
632	fd_change (EV_A_ fd);	898	fd_change (EV_A_ fd, EV__IOFDSET | 1);
633	}	899	}
634	}	900	}
635		901
636	/*****************************************************************************/	902	/*****************************************************************************/
637		903
638	void inline_speed	904	/*
639	upheap (WT *heap, int k)	905	* the heap functions want a real array index. array index 0 uis guaranteed to not
640	{	906	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
641	WT w = heap [k];	907	* the branching factor of the d-tree.
		908	*/
642		909
643	while (k)	910	/*
644	{	911	* at the moment we allow libev the luxury of two heaps,
645	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
646		917
647	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
648	break;	952	break;
649		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
650	heap [k] = heap [p];	1016	heap [k] = heap [p];
651	((W)heap [k])->active = k + 1;	1017	ev_active (ANHE_w (heap [k])) = k;
652	k = p;	1018	k = p;
653	}	1019	}
654		1020
655	heap [k] = w;	1021	heap [k] = he;
656	((W)heap [k])->active = k + 1;	1022	ev_active (ANHE_w (he)) = k;
657
658	}	1023	}
659		1024
660	void inline_speed	1025	/* move an element suitably so it is in a correct place */
661	downheap (WT *heap, int N, int k)	1026	inline_size void
662	{
663	WT w = heap [k];
664
665	for (;;)
666	{
667	int c = (k << 1) + 1;
668
669	if (c >= N)
670	break;
671
672	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
673	? 1 : 0;
674
675	if (w->at <= heap [c]->at)
676	break;
677
678	heap [k] = heap [c];
679	((W)heap [k])->active = k + 1;
680
681	k = c;
682	}
683
684	heap [k] = w;
685	((W)heap [k])->active = k + 1;
686	}
687
688	void inline_size
689	adjustheap (WT *heap, int N, int k)	1027	adjustheap (ANHE *heap, int N, int k)
690	{	1028	{
		1029	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
691	upheap (heap, k);	1030	upheap (heap, k);
		1031	else
692	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);
693	}	1045	}
694		1046
695	/*****************************************************************************/	1047	/*****************************************************************************/
696		1048
		1049	/* associate signal watchers to a signal signal */
697	typedef struct	1050	typedef struct
698	{	1051	{
699	WL head;	1052	WL head;
700	sig_atomic_t volatile gotsig;	1053	EV_ATOMIC_T gotsig;
701	} ANSIG;	1054	} ANSIG;
702		1055
703	static ANSIG *signals;	1056	static ANSIG *signals;
704	static int signalmax;	1057	static int signalmax;
705		1058
706	static int sigpipe [2];	1059	static EV_ATOMIC_T gotsig;
707	static sig_atomic_t volatile gotsig;
708	static ev_io sigev;
709		1060
710	void inline_size	1061	/*****************************************************************************/
711	signals_init (ANSIG *base, int count)
712	{
713	while (count--)
714	{
715	base->head = 0;
716	base->gotsig = 0;
717		1062
718	++base;	1063	/* used to prepare libev internal fd's */
719	}	1064	/* this is not fork-safe */
720	}	1065	inline_speed void
721
722	static void
723	sighandler (int signum)
724	{
725	#if _WIN32
726	signal (signum, sighandler);
727	#endif
728
729	signals [signum - 1].gotsig = 1;
730
731	if (!gotsig)
732	{
733	int old_errno = errno;
734	gotsig = 1;
735	write (sigpipe [1], &signum, 1);
736	errno = old_errno;
737	}
738	}
739
740	void noinline
741	ev_feed_signal_event (EV_P_ int signum)
742	{
743	WL w;
744
745	#if EV_MULTIPLICITY
746	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
747	#endif
748
749	--signum;
750
751	if (signum < 0 || signum >= signalmax)
752	return;
753
754	signals [signum].gotsig = 0;
755
756	for (w = signals [signum].head; w; w = w->next)
757	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
758	}
759
760	static void
761	sigcb (EV_P_ ev_io *iow, int revents)
762	{
763	int signum;
764
765	read (sigpipe [0], &revents, 1);
766	gotsig = 0;
767
768	for (signum = signalmax; signum--; )
769	if (signals [signum].gotsig)
770	ev_feed_signal_event (EV_A_ signum + 1);
771	}
772
773	void inline_speed
774	fd_intern (int fd)	1066	fd_intern (int fd)
775	{	1067	{
776	#ifdef _WIN32	1068	#ifdef _WIN32
777	int arg = 1;	1069	unsigned long arg = 1;
778	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1070	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
779	#else	1071	#else
780	fcntl (fd, F_SETFD, FD_CLOEXEC);	1072	fcntl (fd, F_SETFD, FD_CLOEXEC);
781	fcntl (fd, F_SETFL, O_NONBLOCK);	1073	fcntl (fd, F_SETFL, O_NONBLOCK);
782	#endif	1074	#endif
783	}	1075	}
784		1076
785	static void noinline	1077	static void noinline
786	siginit (EV_P)	1078	evpipe_init (EV_P)
787	{	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
788	fd_intern (sigpipe [0]);	1095	fd_intern (evpipe [0]);
789	fd_intern (sigpipe [1]);	1096	fd_intern (evpipe [1]);
		1097	ev_io_set (&pipe_w, evpipe [0], EV_READ);
		1098	}
790		1099
791	ev_io_set (&sigev, sigpipe [0], EV_READ);
792	ev_io_start (EV_A_ &sigev);	1100	ev_io_start (EV_A_ &pipe_w);
793	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
794	}	1170	}
795		1171
796	/*****************************************************************************/	1172	/*****************************************************************************/
797		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
798	static ev_child *childs [EV_PID_HASHSIZE];	1211	static WL childs [EV_PID_HASHSIZE];
799		1212
800	#ifndef _WIN32	1213	#ifndef _WIN32
801		1214
802	static ev_signal childev;	1215	static ev_signal childev;
803		1216
804	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
805	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	1223	child_reap (EV_P_ int chain, int pid, int status)
806	{	1224	{
807	ev_child *w;	1225	ev_child *w;
		1226	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
808		1227
809	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	{
810	if (w->pid == pid || !w->pid)	1230	if ((w->pid == pid || !w->pid)
		1231	&& (!traced || (w->flags & 1)))
811	{	1232	{
812	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 */
813	w->rpid = pid;	1234	w->rpid = pid;
814	w->rstatus = status;	1235	w->rstatus = status;
815	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1236	ev_feed_event (EV_A_ (W)w, EV_CHILD);
816	}	1237	}
		1238	}
817	}	1239	}
818		1240
819	#ifndef WCONTINUED	1241	#ifndef WCONTINUED
820	# define WCONTINUED 0	1242	# define WCONTINUED 0
821	#endif	1243	#endif
822		1244
		1245	/* called on sigchld etc., calls waitpid */
823	static void	1246	static void
824	childcb (EV_P_ ev_signal *sw, int revents)	1247	childcb (EV_P_ ev_signal *sw, int revents)
825	{	1248	{
826	int pid, status;	1249	int pid, status;
827		1250
…		…
830	if (!WCONTINUED	1253	if (!WCONTINUED
831	|| errno != EINVAL	1254	|| errno != EINVAL
832	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))	1255	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
833	return;	1256	return;
834		1257
835	/* 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 */
836	/* 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 */
837	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1260	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
838		1261
839	child_reap (EV_A_ sw, pid, pid, status);	1262	child_reap (EV_A_ pid, pid, status);
840	if (EV_PID_HASHSIZE > 1)	1263	if (EV_PID_HASHSIZE > 1)
841	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1264	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
842	}	1265	}
843		1266
844	#endif	1267	#endif
845		1268
846	/*****************************************************************************/	1269	/*****************************************************************************/
…		…
908	/* kqueue is borked on everything but netbsd apparently */	1331	/* kqueue is borked on everything but netbsd apparently */
909	/* 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 */
910	flags &= ~EVBACKEND_KQUEUE;	1333	flags &= ~EVBACKEND_KQUEUE;
911	#endif	1334	#endif
912	#ifdef __APPLE__	1335	#ifdef __APPLE__
913	// flags &= ~EVBACKEND_KQUEUE; for documentation	1336	/* only select works correctly on that "unix-certified" platform */
914	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 */
915	#endif	1339	#endif
916		1340
917	return flags;	1341	return flags;
918	}	1342	}
919		1343
920	unsigned int	1344	unsigned int
921	ev_embeddable_backends (void)	1345	ev_embeddable_backends (void)
922	{	1346	{
923	return EVBACKEND_EPOLL	1347	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
924	| EVBACKEND_KQUEUE	1348
925	| EVBACKEND_PORT;	1349	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1350	/* please fix it and tell me how to detect the fix */
		1351	flags &= ~EVBACKEND_EPOLL;
		1352
		1353	return flags;
926	}	1354	}
927		1355
928	unsigned int	1356	unsigned int
929	ev_backend (EV_P)	1357	ev_backend (EV_P)
930	{	1358	{
…		…
935	ev_loop_count (EV_P)	1363	ev_loop_count (EV_P)
936	{	1364	{
937	return loop_count;	1365	return loop_count;
938	}	1366	}
939		1367
		1368	unsigned int
		1369	ev_loop_depth (EV_P)
		1370	{
		1371	return loop_depth;
		1372	}
		1373
		1374	void
		1375	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1376	{
		1377	io_blocktime = interval;
		1378	}
		1379
		1380	void
		1381	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1382	{
		1383	timeout_blocktime = interval;
		1384	}
		1385
		1386	/* initialise a loop structure, must be zero-initialised */
940	static void noinline	1387	static void noinline
941	loop_init (EV_P_ unsigned int flags)	1388	loop_init (EV_P_ unsigned int flags)
942	{	1389	{
943	if (!backend)	1390	if (!backend)
944	{	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
945	#if EV_USE_MONOTONIC	1402	#if EV_USE_MONOTONIC
		1403	if (!have_monotonic)
946	{	1404	{
947	struct timespec ts;	1405	struct timespec ts;
		1406
948	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1407	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
949	have_monotonic = 1;	1408	have_monotonic = 1;
950	}	1409	}
951	#endif	1410	#endif
952		1411
953	ev_rt_now = ev_time ();	1412	ev_rt_now = ev_time ();
954	mn_now = get_clock ();	1413	mn_now = get_clock ();
955	now_floor = mn_now;	1414	now_floor = mn_now;
956	rtmn_diff = ev_rt_now - mn_now;	1415	rtmn_diff = ev_rt_now - mn_now;
		1416	invoke_cb = ev_invoke_pending;
		1417
		1418	io_blocktime = 0.;
		1419	timeout_blocktime = 0.;
		1420	backend = 0;
		1421	backend_fd = -1;
		1422	gotasync = 0;
		1423	#if EV_USE_INOTIFY
		1424	fs_fd = -2;
		1425	#endif
957		1426
958	/* pid check not overridable via env */	1427	/* pid check not overridable via env */
959	#ifndef _WIN32	1428	#ifndef _WIN32
960	if (flags & EVFLAG_FORKCHECK)	1429	if (flags & EVFLAG_FORKCHECK)
961	curpid = getpid ();	1430	curpid = getpid ();
…		…
964	if (!(flags & EVFLAG_NOENV)	1433	if (!(flags & EVFLAG_NOENV)
965	&& !enable_secure ()	1434	&& !enable_secure ()
966	&& getenv ("LIBEV_FLAGS"))	1435	&& getenv ("LIBEV_FLAGS"))
967	flags = atoi (getenv ("LIBEV_FLAGS"));	1436	flags = atoi (getenv ("LIBEV_FLAGS"));
968		1437
969	if (!(flags & 0x0000ffffUL))	1438	if (!(flags & 0x0000ffffU))
970	flags |= ev_recommended_backends ();	1439	flags |= ev_recommended_backends ();
971
972	backend = 0;
973	backend_fd = -1;
974	#if EV_USE_INOTIFY
975	fs_fd = -2;
976	#endif
977		1440
978	#if EV_USE_PORT	1441	#if EV_USE_PORT
979	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1442	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
980	#endif	1443	#endif
981	#if EV_USE_KQUEUE	1444	#if EV_USE_KQUEUE
…		…
989	#endif	1452	#endif
990	#if EV_USE_SELECT	1453	#if EV_USE_SELECT
991	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1454	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
992	#endif	1455	#endif
993		1456
		1457	ev_prepare_init (&pending_w, pendingcb);
		1458
994	ev_init (&sigev, sigcb);	1459	ev_init (&pipe_w, pipecb);
995	ev_set_priority (&sigev, EV_MAXPRI);	1460	ev_set_priority (&pipe_w, EV_MAXPRI);
996	}	1461	}
997	}	1462	}
998		1463
		1464	/* free up a loop structure */
999	static void noinline	1465	static void noinline
1000	loop_destroy (EV_P)	1466	loop_destroy (EV_P)
1001	{	1467	{
1002	int i;	1468	int i;
		1469
		1470	if (ev_is_active (&pipe_w))
		1471	{
		1472	ev_ref (EV_A); /* signal watcher */
		1473	ev_io_stop (EV_A_ &pipe_w);
		1474
		1475	#if EV_USE_EVENTFD
		1476	if (evfd >= 0)
		1477	close (evfd);
		1478	#endif
		1479
		1480	if (evpipe [0] >= 0)
		1481	{
		1482	close (evpipe [0]);
		1483	close (evpipe [1]);
		1484	}
		1485	}
1003		1486
1004	#if EV_USE_INOTIFY	1487	#if EV_USE_INOTIFY
1005	if (fs_fd >= 0)	1488	if (fs_fd >= 0)
1006	close (fs_fd);	1489	close (fs_fd);
1007	#endif	1490	#endif
…		…
1031	#if EV_IDLE_ENABLE	1514	#if EV_IDLE_ENABLE
1032	array_free (idle, [i]);	1515	array_free (idle, [i]);
1033	#endif	1516	#endif
1034	}	1517	}
1035		1518
		1519	ev_free (anfds); anfdmax = 0;
		1520
1036	/* have to use the microsoft-never-gets-it-right macro */	1521	/* have to use the microsoft-never-gets-it-right macro */
		1522	array_free (rfeed, EMPTY);
1037	array_free (fdchange, EMPTY);	1523	array_free (fdchange, EMPTY);
1038	array_free (timer, EMPTY);	1524	array_free (timer, EMPTY);
1039	#if EV_PERIODIC_ENABLE	1525	#if EV_PERIODIC_ENABLE
1040	array_free (periodic, EMPTY);	1526	array_free (periodic, EMPTY);
1041	#endif	1527	#endif
		1528	#if EV_FORK_ENABLE
		1529	array_free (fork, EMPTY);
		1530	#endif
1042	array_free (prepare, EMPTY);	1531	array_free (prepare, EMPTY);
1043	array_free (check, EMPTY);	1532	array_free (check, EMPTY);
		1533	#if EV_ASYNC_ENABLE
		1534	array_free (async, EMPTY);
		1535	#endif
1044		1536
1045	backend = 0;	1537	backend = 0;
1046	}	1538	}
1047		1539
		1540	#if EV_USE_INOTIFY
1048	void inline_size infy_fork (EV_P);	1541	inline_size void infy_fork (EV_P);
		1542	#endif
1049		1543
1050	void inline_size	1544	inline_size void
1051	loop_fork (EV_P)	1545	loop_fork (EV_P)
1052	{	1546	{
1053	#if EV_USE_PORT	1547	#if EV_USE_PORT
1054	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1548	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1055	#endif	1549	#endif
…		…
1061	#endif	1555	#endif
1062	#if EV_USE_INOTIFY	1556	#if EV_USE_INOTIFY
1063	infy_fork (EV_A);	1557	infy_fork (EV_A);
1064	#endif	1558	#endif
1065		1559
1066	if (ev_is_active (&sigev))	1560	if (ev_is_active (&pipe_w))
1067	{	1561	{
1068	/* default loop */	1562	/* this "locks" the handlers against writing to the pipe */
		1563	/* while we modify the fd vars */
		1564	gotsig = 1;
		1565	#if EV_ASYNC_ENABLE
		1566	gotasync = 1;
		1567	#endif
1069		1568
1070	ev_ref (EV_A);	1569	ev_ref (EV_A);
1071	ev_io_stop (EV_A_ &sigev);	1570	ev_io_stop (EV_A_ &pipe_w);
		1571
		1572	#if EV_USE_EVENTFD
		1573	if (evfd >= 0)
		1574	close (evfd);
		1575	#endif
		1576
		1577	if (evpipe [0] >= 0)
		1578	{
1072	close (sigpipe [0]);	1579	close (evpipe [0]);
1073	close (sigpipe [1]);	1580	close (evpipe [1]);
		1581	}
1074		1582
1075	while (pipe (sigpipe))
1076	syserr ("(libev) error creating pipe");
1077
1078	siginit (EV_A);	1583	evpipe_init (EV_A);
		1584	/* now iterate over everything, in case we missed something */
		1585	pipecb (EV_A_ &pipe_w, EV_READ);
1079	}	1586	}
1080		1587
1081	postfork = 0;	1588	postfork = 0;
1082	}	1589	}
1083		1590
1084	#if EV_MULTIPLICITY	1591	#if EV_MULTIPLICITY
		1592
1085	struct ev_loop *	1593	struct ev_loop *
1086	ev_loop_new (unsigned int flags)	1594	ev_loop_new (unsigned int flags)
1087	{	1595	{
1088	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1596	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1089		1597
…		…
1105	}	1613	}
1106		1614
1107	void	1615	void
1108	ev_loop_fork (EV_P)	1616	ev_loop_fork (EV_P)
1109	{	1617	{
1110	postfork = 1;	1618	postfork = 1; /* must be in line with ev_default_fork */
1111	}	1619	}
1112		1620
		1621	#if EV_VERIFY
		1622	static void noinline
		1623	verify_watcher (EV_P_ W w)
		1624	{
		1625	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1626
		1627	if (w->pending)
		1628	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1629	}
		1630
		1631	static void noinline
		1632	verify_heap (EV_P_ ANHE *heap, int N)
		1633	{
		1634	int i;
		1635
		1636	for (i = HEAP0; i < N + HEAP0; ++i)
		1637	{
		1638	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1639	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1640	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1641
		1642	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1643	}
		1644	}
		1645
		1646	static void noinline
		1647	array_verify (EV_P_ W *ws, int cnt)
		1648	{
		1649	while (cnt--)
		1650	{
		1651	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1652	verify_watcher (EV_A_ ws [cnt]);
		1653	}
		1654	}
		1655	#endif
		1656
		1657	void
		1658	ev_loop_verify (EV_P)
		1659	{
		1660	#if EV_VERIFY
		1661	int i;
		1662	WL w;
		1663
		1664	assert (activecnt >= -1);
		1665
		1666	assert (fdchangemax >= fdchangecnt);
		1667	for (i = 0; i < fdchangecnt; ++i)
		1668	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1669
		1670	assert (anfdmax >= 0);
		1671	for (i = 0; i < anfdmax; ++i)
		1672	for (w = anfds [i].head; w; w = w->next)
		1673	{
		1674	verify_watcher (EV_A_ (W)w);
		1675	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1676	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1677	}
		1678
		1679	assert (timermax >= timercnt);
		1680	verify_heap (EV_A_ timers, timercnt);
		1681
		1682	#if EV_PERIODIC_ENABLE
		1683	assert (periodicmax >= periodiccnt);
		1684	verify_heap (EV_A_ periodics, periodiccnt);
		1685	#endif
		1686
		1687	for (i = NUMPRI; i--; )
		1688	{
		1689	assert (pendingmax [i] >= pendingcnt [i]);
		1690	#if EV_IDLE_ENABLE
		1691	assert (idleall >= 0);
		1692	assert (idlemax [i] >= idlecnt [i]);
		1693	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1694	#endif
		1695	}
		1696
		1697	#if EV_FORK_ENABLE
		1698	assert (forkmax >= forkcnt);
		1699	array_verify (EV_A_ (W *)forks, forkcnt);
		1700	#endif
		1701
		1702	#if EV_ASYNC_ENABLE
		1703	assert (asyncmax >= asynccnt);
		1704	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1705	#endif
		1706
		1707	assert (preparemax >= preparecnt);
		1708	array_verify (EV_A_ (W *)prepares, preparecnt);
		1709
		1710	assert (checkmax >= checkcnt);
		1711	array_verify (EV_A_ (W *)checks, checkcnt);
		1712
		1713	# if 0
		1714	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1715	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1113	#endif	1716	# endif
		1717	#endif
		1718	}
		1719
		1720	#endif /* multiplicity */
1114		1721
1115	#if EV_MULTIPLICITY	1722	#if EV_MULTIPLICITY
1116	struct ev_loop *	1723	struct ev_loop *
1117	ev_default_loop_init (unsigned int flags)	1724	ev_default_loop_init (unsigned int flags)
1118	#else	1725	#else
1119	int	1726	int
1120	ev_default_loop (unsigned int flags)	1727	ev_default_loop (unsigned int flags)
1121	#endif	1728	#endif
1122	{	1729	{
1123	if (sigpipe [0] == sigpipe [1])
1124	if (pipe (sigpipe))
1125	return 0;
1126
1127	if (!ev_default_loop_ptr)	1730	if (!ev_default_loop_ptr)
1128	{	1731	{
1129	#if EV_MULTIPLICITY	1732	#if EV_MULTIPLICITY
1130	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1733	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1131	#else	1734	#else
…		…
1134		1737
1135	loop_init (EV_A_ flags);	1738	loop_init (EV_A_ flags);
1136		1739
1137	if (ev_backend (EV_A))	1740	if (ev_backend (EV_A))
1138	{	1741	{
1139	siginit (EV_A);
1140
1141	#ifndef _WIN32	1742	#ifndef _WIN32
1142	ev_signal_init (&childev, childcb, SIGCHLD);	1743	ev_signal_init (&childev, childcb, SIGCHLD);
1143	ev_set_priority (&childev, EV_MAXPRI);	1744	ev_set_priority (&childev, EV_MAXPRI);
1144	ev_signal_start (EV_A_ &childev);	1745	ev_signal_start (EV_A_ &childev);
1145	ev_unref (EV_A); /* child watcher should not keep loop alive */	1746	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1157	{	1758	{
1158	#if EV_MULTIPLICITY	1759	#if EV_MULTIPLICITY
1159	struct ev_loop *loop = ev_default_loop_ptr;	1760	struct ev_loop *loop = ev_default_loop_ptr;
1160	#endif	1761	#endif
1161		1762
		1763	ev_default_loop_ptr = 0;
		1764
1162	#ifndef _WIN32	1765	#ifndef _WIN32
1163	ev_ref (EV_A); /* child watcher */	1766	ev_ref (EV_A); /* child watcher */
1164	ev_signal_stop (EV_A_ &childev);	1767	ev_signal_stop (EV_A_ &childev);
1165	#endif	1768	#endif
1166		1769
1167	ev_ref (EV_A); /* signal watcher */
1168	ev_io_stop (EV_A_ &sigev);
1169
1170	close (sigpipe [0]); sigpipe [0] = 0;
1171	close (sigpipe [1]); sigpipe [1] = 0;
1172
1173	loop_destroy (EV_A);	1770	loop_destroy (EV_A);
1174	}	1771	}
1175		1772
1176	void	1773	void
1177	ev_default_fork (void)	1774	ev_default_fork (void)
1178	{	1775	{
1179	#if EV_MULTIPLICITY	1776	#if EV_MULTIPLICITY
1180	struct ev_loop *loop = ev_default_loop_ptr;	1777	struct ev_loop *loop = ev_default_loop_ptr;
1181	#endif	1778	#endif
1182		1779
1183	if (backend)	1780	postfork = 1; /* must be in line with ev_loop_fork */
1184	postfork = 1;
1185	}	1781	}
1186		1782
1187	/*****************************************************************************/	1783	/*****************************************************************************/
1188		1784
1189	void	1785	void
1190	ev_invoke (EV_P_ void *w, int revents)	1786	ev_invoke (EV_P_ void *w, int revents)
1191	{	1787	{
1192	EV_CB_INVOKE ((W)w, revents);	1788	EV_CB_INVOKE ((W)w, revents);
1193	}	1789	}
1194		1790
1195	void inline_speed	1791	void
1196	call_pending (EV_P)	1792	ev_invoke_pending (EV_P)
1197	{	1793	{
1198	int pri;	1794	int pri;
1199		1795
1200	for (pri = NUMPRI; pri--; )	1796	for (pri = NUMPRI; pri--; )
1201	while (pendingcnt [pri])	1797	while (pendingcnt [pri])
1202	{	1798	{
1203	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1799	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1204		1800
1205	if (expect_true (p->w))
1206	{
1207	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1801	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1802	/* ^ this is no longer true, as pending_w could be here */
1208		1803
1209	p->w->pending = 0;	1804	p->w->pending = 0;
1210	EV_CB_INVOKE (p->w, p->events);	1805	EV_CB_INVOKE (p->w, p->events);
1211	}	1806	EV_FREQUENT_CHECK;
1212	}	1807	}
1213	}	1808	}
1214		1809
1215	void inline_size
1216	timers_reify (EV_P)
1217	{
1218	while (timercnt && ((WT)timers [0])->at <= mn_now)
1219	{
1220	ev_timer *w = timers [0];
1221
1222	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1223
1224	/* first reschedule or stop timer */
1225	if (w->repeat)
1226	{
1227	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1228
1229	((WT)w)->at += w->repeat;
1230	if (((WT)w)->at < mn_now)
1231	((WT)w)->at = mn_now;
1232
1233	downheap ((WT *)timers, timercnt, 0);
1234	}
1235	else
1236	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1237
1238	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1239	}
1240	}
1241
1242	#if EV_PERIODIC_ENABLE
1243	void inline_size
1244	periodics_reify (EV_P)
1245	{
1246	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1247	{
1248	ev_periodic *w = periodics [0];
1249
1250	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1251
1252	/* first reschedule or stop timer */
1253	if (w->reschedule_cb)
1254	{
1255	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1256	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1257	downheap ((WT *)periodics, periodiccnt, 0);
1258	}
1259	else if (w->interval)
1260	{
1261	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1262	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1263	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1264	downheap ((WT *)periodics, periodiccnt, 0);
1265	}
1266	else
1267	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1268
1269	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1270	}
1271	}
1272
1273	static void noinline
1274	periodics_reschedule (EV_P)
1275	{
1276	int i;
1277
1278	/* adjust periodics after time jump */
1279	for (i = 0; i < periodiccnt; ++i)
1280	{
1281	ev_periodic *w = periodics [i];
1282
1283	if (w->reschedule_cb)
1284	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1285	else if (w->interval)
1286	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1287	}
1288
1289	/* now rebuild the heap */
1290	for (i = periodiccnt >> 1; i--; )
1291	downheap ((WT *)periodics, periodiccnt, i);
1292	}
1293	#endif
1294
1295	#if EV_IDLE_ENABLE	1810	#if EV_IDLE_ENABLE
1296	void inline_size	1811	/* make idle watchers pending. this handles the "call-idle */
		1812	/* only when higher priorities are idle" logic */
		1813	inline_size void
1297	idle_reify (EV_P)	1814	idle_reify (EV_P)
1298	{	1815	{
1299	if (expect_false (idleall))	1816	if (expect_false (idleall))
1300	{	1817	{
1301	int pri;	1818	int pri;
…		…
1313	}	1830	}
1314	}	1831	}
1315	}	1832	}
1316	#endif	1833	#endif
1317		1834
1318	void inline_speed	1835	/* make timers pending */
		1836	inline_size void
		1837	timers_reify (EV_P)
		1838	{
		1839	EV_FREQUENT_CHECK;
		1840
		1841	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		1842	{
		1843	do
		1844	{
		1845	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1846
		1847	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1848
		1849	/* first reschedule or stop timer */
		1850	if (w->repeat)
		1851	{
		1852	ev_at (w) += w->repeat;
		1853	if (ev_at (w) < mn_now)
		1854	ev_at (w) = mn_now;
		1855
		1856	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1857
		1858	ANHE_at_cache (timers [HEAP0]);
		1859	downheap (timers, timercnt, HEAP0);
		1860	}
		1861	else
		1862	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1863
		1864	EV_FREQUENT_CHECK;
		1865	feed_reverse (EV_A_ (W)w);
		1866	}
		1867	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
		1868
		1869	feed_reverse_done (EV_A_ EV_TIMEOUT);
		1870	}
		1871	}
		1872
		1873	#if EV_PERIODIC_ENABLE
		1874	/* make periodics pending */
		1875	inline_size void
		1876	periodics_reify (EV_P)
		1877	{
		1878	EV_FREQUENT_CHECK;
		1879
		1880	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		1881	{
		1882	int feed_count = 0;
		1883
		1884	do
		1885	{
		1886	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1887
		1888	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1889
		1890	/* first reschedule or stop timer */
		1891	if (w->reschedule_cb)
		1892	{
		1893	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1894
		1895	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		1896
		1897	ANHE_at_cache (periodics [HEAP0]);
		1898	downheap (periodics, periodiccnt, HEAP0);
		1899	}
		1900	else if (w->interval)
		1901	{
		1902	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1903	/* if next trigger time is not sufficiently in the future, put it there */
		1904	/* this might happen because of floating point inexactness */
		1905	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1906	{
		1907	ev_at (w) += w->interval;
		1908
		1909	/* if interval is unreasonably low we might still have a time in the past */
		1910	/* so correct this. this will make the periodic very inexact, but the user */
		1911	/* has effectively asked to get triggered more often than possible */
		1912	if (ev_at (w) < ev_rt_now)
		1913	ev_at (w) = ev_rt_now;
		1914	}
		1915
		1916	ANHE_at_cache (periodics [HEAP0]);
		1917	downheap (periodics, periodiccnt, HEAP0);
		1918	}
		1919	else
		1920	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1921
		1922	EV_FREQUENT_CHECK;
		1923	feed_reverse (EV_A_ (W)w);
		1924	}
		1925	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
		1926
		1927	feed_reverse_done (EV_A_ EV_PERIODIC);
		1928	}
		1929	}
		1930
		1931	/* simply recalculate all periodics */
		1932	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
		1933	static void noinline
		1934	periodics_reschedule (EV_P)
		1935	{
		1936	int i;
		1937
		1938	/* adjust periodics after time jump */
		1939	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		1940	{
		1941	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		1942
		1943	if (w->reschedule_cb)
		1944	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1945	else if (w->interval)
		1946	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1947
		1948	ANHE_at_cache (periodics [i]);
		1949	}
		1950
		1951	reheap (periodics, periodiccnt);
		1952	}
		1953	#endif
		1954
		1955	/* adjust all timers by a given offset */
		1956	static void noinline
		1957	timers_reschedule (EV_P_ ev_tstamp adjust)
		1958	{
		1959	int i;
		1960
		1961	for (i = 0; i < timercnt; ++i)
		1962	{
		1963	ANHE *he = timers + i + HEAP0;
		1964	ANHE_w (*he)->at += adjust;
		1965	ANHE_at_cache (*he);
		1966	}
		1967	}
		1968
		1969	/* fetch new monotonic and realtime times from the kernel */
		1970	/* also detetc if there was a timejump, and act accordingly */
		1971	inline_speed void
1319	time_update (EV_P_ ev_tstamp max_block)	1972	time_update (EV_P_ ev_tstamp max_block)
1320	{	1973	{
1321	int i;
1322
1323	#if EV_USE_MONOTONIC	1974	#if EV_USE_MONOTONIC
1324	if (expect_true (have_monotonic))	1975	if (expect_true (have_monotonic))
1325	{	1976	{
		1977	int i;
1326	ev_tstamp odiff = rtmn_diff;	1978	ev_tstamp odiff = rtmn_diff;
1327		1979
1328	mn_now = get_clock ();	1980	mn_now = get_clock ();
1329		1981
1330	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	1982	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1348	*/	2000	*/
1349	for (i = 4; --i; )	2001	for (i = 4; --i; )
1350	{	2002	{
1351	rtmn_diff = ev_rt_now - mn_now;	2003	rtmn_diff = ev_rt_now - mn_now;
1352		2004
1353	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	2005	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1354	return; /* all is well */	2006	return; /* all is well */
1355		2007
1356	ev_rt_now = ev_time ();	2008	ev_rt_now = ev_time ();
1357	mn_now = get_clock ();	2009	mn_now = get_clock ();
1358	now_floor = mn_now;	2010	now_floor = mn_now;
1359	}	2011	}
1360		2012
		2013	/* no timer adjustment, as the monotonic clock doesn't jump */
		2014	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1361	# if EV_PERIODIC_ENABLE	2015	# if EV_PERIODIC_ENABLE
1362	periodics_reschedule (EV_A);	2016	periodics_reschedule (EV_A);
1363	# endif	2017	# endif
1364	/* no timer adjustment, as the monotonic clock doesn't jump */
1365	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1366	}	2018	}
1367	else	2019	else
1368	#endif	2020	#endif
1369	{	2021	{
1370	ev_rt_now = ev_time ();	2022	ev_rt_now = ev_time ();
1371		2023
1372	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2024	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1373	{	2025	{
		2026	/* adjust timers. this is easy, as the offset is the same for all of them */
		2027	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1374	#if EV_PERIODIC_ENABLE	2028	#if EV_PERIODIC_ENABLE
1375	periodics_reschedule (EV_A);	2029	periodics_reschedule (EV_A);
1376	#endif	2030	#endif
1377	/* adjust timers. this is easy, as the offset is the same for all of them */
1378	for (i = 0; i < timercnt; ++i)
1379	((WT)timers [i])->at += ev_rt_now - mn_now;
1380	}	2031	}
1381		2032
1382	mn_now = ev_rt_now;	2033	mn_now = ev_rt_now;
1383	}	2034	}
1384	}	2035	}
1385		2036
1386	void	2037	void
1387	ev_ref (EV_P)
1388	{
1389	++activecnt;
1390	}
1391
1392	void
1393	ev_unref (EV_P)
1394	{
1395	--activecnt;
1396	}
1397
1398	static int loop_done;
1399
1400	void
1401	ev_loop (EV_P_ int flags)	2038	ev_loop (EV_P_ int flags)
1402	{	2039	{
1403	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	2040	++loop_depth;
1404	? EVUNLOOP_ONE
1405	: EVUNLOOP_CANCEL;
1406		2041
		2042	loop_done = EVUNLOOP_CANCEL;
		2043
1407	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2044	invoke_cb (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1408		2045
1409	do	2046	do
1410	{	2047	{
		2048	#if EV_VERIFY >= 2
		2049	ev_loop_verify (EV_A);
		2050	#endif
		2051
1411	#ifndef _WIN32	2052	#ifndef _WIN32
1412	if (expect_false (curpid)) /* penalise the forking check even more */	2053	if (expect_false (curpid)) /* penalise the forking check even more */
1413	if (expect_false (getpid () != curpid))	2054	if (expect_false (getpid () != curpid))
1414	{	2055	{
1415	curpid = getpid ();	2056	curpid = getpid ();
…		…
1421	/* we might have forked, so queue fork handlers */	2062	/* we might have forked, so queue fork handlers */
1422	if (expect_false (postfork))	2063	if (expect_false (postfork))
1423	if (forkcnt)	2064	if (forkcnt)
1424	{	2065	{
1425	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2066	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1426	call_pending (EV_A);	2067	invoke_cb (EV_A);
1427	}	2068	}
1428	#endif	2069	#endif
1429		2070
1430	/* queue prepare watchers (and execute them) */	2071	/* queue prepare watchers (and execute them) */
1431	if (expect_false (preparecnt))	2072	if (expect_false (preparecnt))
1432	{	2073	{
1433	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2074	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1434	call_pending (EV_A);	2075	invoke_cb (EV_A);
1435	}	2076	}
1436
1437	if (expect_false (!activecnt))
1438	break;
1439		2077
1440	/* we might have forked, so reify kernel state if necessary */	2078	/* we might have forked, so reify kernel state if necessary */
1441	if (expect_false (postfork))	2079	if (expect_false (postfork))
1442	loop_fork (EV_A);	2080	loop_fork (EV_A);
1443		2081
1444	/* update fd-related kernel structures */	2082	/* update fd-related kernel structures */
1445	fd_reify (EV_A);	2083	fd_reify (EV_A);
1446		2084
1447	/* calculate blocking time */	2085	/* calculate blocking time */
1448	{	2086	{
1449	ev_tstamp block;	2087	ev_tstamp waittime = 0.;
		2088	ev_tstamp sleeptime = 0.;
1450		2089
1451	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))	2090	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1452	block = 0.; /* do not block at all */
1453	else
1454	{	2091	{
		2092	/* remember old timestamp for io_blocktime calculation */
		2093	ev_tstamp prev_mn_now = mn_now;
		2094
1455	/* update time to cancel out callback processing overhead */	2095	/* update time to cancel out callback processing overhead */
1456	time_update (EV_A_ 1e100);	2096	time_update (EV_A_ 1e100);
1457		2097
1458	block = MAX_BLOCKTIME;	2098	waittime = MAX_BLOCKTIME;
1459		2099
1460	if (timercnt)	2100	if (timercnt)
1461	{	2101	{
1462	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	2102	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1463	if (block > to) block = to;	2103	if (waittime > to) waittime = to;
1464	}	2104	}
1465		2105
1466	#if EV_PERIODIC_ENABLE	2106	#if EV_PERIODIC_ENABLE
1467	if (periodiccnt)	2107	if (periodiccnt)
1468	{	2108	{
1469	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	2109	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1470	if (block > to) block = to;	2110	if (waittime > to) waittime = to;
1471	}	2111	}
1472	#endif	2112	#endif
1473		2113
		2114	/* don't let timeouts decrease the waittime below timeout_blocktime */
		2115	if (expect_false (waittime < timeout_blocktime))
		2116	waittime = timeout_blocktime;
		2117
		2118	/* extra check because io_blocktime is commonly 0 */
1474	if (expect_false (block < 0.)) block = 0.;	2119	if (expect_false (io_blocktime))
		2120	{
		2121	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2122
		2123	if (sleeptime > waittime - backend_fudge)
		2124	sleeptime = waittime - backend_fudge;
		2125
		2126	if (expect_true (sleeptime > 0.))
		2127	{
		2128	ev_sleep (sleeptime);
		2129	waittime -= sleeptime;
		2130	}
		2131	}
1475	}	2132	}
1476		2133
1477	++loop_count;	2134	++loop_count;
1478	backend_poll (EV_A_ block);	2135	backend_poll (EV_A_ waittime);
1479		2136
1480	/* update ev_rt_now, do magic */	2137	/* update ev_rt_now, do magic */
1481	time_update (EV_A_ block);	2138	time_update (EV_A_ waittime + sleeptime);
1482	}	2139	}
1483		2140
1484	/* queue pending timers and reschedule them */	2141	/* queue pending timers and reschedule them */
1485	timers_reify (EV_A); /* relative timers called last */	2142	timers_reify (EV_A); /* relative timers called last */
1486	#if EV_PERIODIC_ENABLE	2143	#if EV_PERIODIC_ENABLE
…		…
1494		2151
1495	/* queue check watchers, to be executed first */	2152	/* queue check watchers, to be executed first */
1496	if (expect_false (checkcnt))	2153	if (expect_false (checkcnt))
1497	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2154	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1498		2155
1499	call_pending (EV_A);	2156	invoke_cb (EV_A);
1500
1501	}	2157	}
1502	while (expect_true (activecnt && !loop_done));	2158	while (expect_true (
		2159	activecnt
		2160	&& !loop_done
		2161	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		2162	));
1503		2163
1504	if (loop_done == EVUNLOOP_ONE)	2164	if (loop_done == EVUNLOOP_ONE)
1505	loop_done = EVUNLOOP_CANCEL;	2165	loop_done = EVUNLOOP_CANCEL;
		2166
		2167	--loop_depth;
1506	}	2168	}
1507		2169
1508	void	2170	void
1509	ev_unloop (EV_P_ int how)	2171	ev_unloop (EV_P_ int how)
1510	{	2172	{
1511	loop_done = how;	2173	loop_done = how;
1512	}	2174	}
1513		2175
		2176	void
		2177	ev_ref (EV_P)
		2178	{
		2179	++activecnt;
		2180	}
		2181
		2182	void
		2183	ev_unref (EV_P)
		2184	{
		2185	--activecnt;
		2186	}
		2187
		2188	void
		2189	ev_now_update (EV_P)
		2190	{
		2191	time_update (EV_A_ 1e100);
		2192	}
		2193
		2194	void
		2195	ev_suspend (EV_P)
		2196	{
		2197	ev_now_update (EV_A);
		2198	}
		2199
		2200	void
		2201	ev_resume (EV_P)
		2202	{
		2203	ev_tstamp mn_prev = mn_now;
		2204
		2205	ev_now_update (EV_A);
		2206	timers_reschedule (EV_A_ mn_now - mn_prev);
		2207	#if EV_PERIODIC_ENABLE
		2208	/* TODO: really do this? */
		2209	periodics_reschedule (EV_A);
		2210	#endif
		2211	}
		2212
1514	/*****************************************************************************/	2213	/*****************************************************************************/
		2214	/* singly-linked list management, used when the expected list length is short */
1515		2215
1516	void inline_size	2216	inline_size void
1517	wlist_add (WL *head, WL elem)	2217	wlist_add (WL *head, WL elem)
1518	{	2218	{
1519	elem->next = *head;	2219	elem->next = *head;
1520	*head = elem;	2220	*head = elem;
1521	}	2221	}
1522		2222
1523	void inline_size	2223	inline_size void
1524	wlist_del (WL *head, WL elem)	2224	wlist_del (WL *head, WL elem)
1525	{	2225	{
1526	while (*head)	2226	while (*head)
1527	{	2227	{
1528	if (*head == elem)	2228	if (*head == elem)
…		…
1533		2233
1534	head = &(*head)->next;	2234	head = &(*head)->next;
1535	}	2235	}
1536	}	2236	}
1537		2237
1538	void inline_speed	2238	/* internal, faster, version of ev_clear_pending */
		2239	inline_speed void
1539	clear_pending (EV_P_ W w)	2240	clear_pending (EV_P_ W w)
1540	{	2241	{
1541	if (w->pending)	2242	if (w->pending)
1542	{	2243	{
1543	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2244	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1544	w->pending = 0;	2245	w->pending = 0;
1545	}	2246	}
1546	}	2247	}
1547		2248
1548	int	2249	int
…		…
1552	int pending = w_->pending;	2253	int pending = w_->pending;
1553		2254
1554	if (expect_true (pending))	2255	if (expect_true (pending))
1555	{	2256	{
1556	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2257	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2258	p->w = (W)&pending_w;
1557	w_->pending = 0;	2259	w_->pending = 0;
1558	p->w = 0;
1559	return p->events;	2260	return p->events;
1560	}	2261	}
1561	else	2262	else
1562	return 0;	2263	return 0;
1563	}	2264	}
1564		2265
1565	void inline_size	2266	inline_size void
1566	pri_adjust (EV_P_ W w)	2267	pri_adjust (EV_P_ W w)
1567	{	2268	{
1568	int pri = w->priority;	2269	int pri = ev_priority (w);
1569	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2270	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1570	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2271	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1571	w->priority = pri;	2272	ev_set_priority (w, pri);
1572	}	2273	}
1573		2274
1574	void inline_speed	2275	inline_speed void
1575	ev_start (EV_P_ W w, int active)	2276	ev_start (EV_P_ W w, int active)
1576	{	2277	{
1577	pri_adjust (EV_A_ w);	2278	pri_adjust (EV_A_ w);
1578	w->active = active;	2279	w->active = active;
1579	ev_ref (EV_A);	2280	ev_ref (EV_A);
1580	}	2281	}
1581		2282
1582	void inline_size	2283	inline_size void
1583	ev_stop (EV_P_ W w)	2284	ev_stop (EV_P_ W w)
1584	{	2285	{
1585	ev_unref (EV_A);	2286	ev_unref (EV_A);
1586	w->active = 0;	2287	w->active = 0;
1587	}	2288	}
…		…
1594	int fd = w->fd;	2295	int fd = w->fd;
1595		2296
1596	if (expect_false (ev_is_active (w)))	2297	if (expect_false (ev_is_active (w)))
1597	return;	2298	return;
1598		2299
1599	assert (("ev_io_start called with negative fd", fd >= 0));	2300	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2301	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2302
		2303	EV_FREQUENT_CHECK;
1600		2304
1601	ev_start (EV_A_ (W)w, 1);	2305	ev_start (EV_A_ (W)w, 1);
1602	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2306	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1603	wlist_add ((WL *)&anfds[fd].head, (WL)w);	2307	wlist_add (&anfds[fd].head, (WL)w);
1604		2308
1605	fd_change (EV_A_ fd);	2309	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
		2310	w->events &= ~EV__IOFDSET;
		2311
		2312	EV_FREQUENT_CHECK;
1606	}	2313	}
1607		2314
1608	void noinline	2315	void noinline
1609	ev_io_stop (EV_P_ ev_io *w)	2316	ev_io_stop (EV_P_ ev_io *w)
1610	{	2317	{
1611	clear_pending (EV_A_ (W)w);	2318	clear_pending (EV_A_ (W)w);
1612	if (expect_false (!ev_is_active (w)))	2319	if (expect_false (!ev_is_active (w)))
1613	return;	2320	return;
1614		2321
1615	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2322	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1616		2323
		2324	EV_FREQUENT_CHECK;
		2325
1617	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	2326	wlist_del (&anfds[w->fd].head, (WL)w);
1618	ev_stop (EV_A_ (W)w);	2327	ev_stop (EV_A_ (W)w);
1619		2328
1620	fd_change (EV_A_ w->fd);	2329	fd_change (EV_A_ w->fd, 1);
		2330
		2331	EV_FREQUENT_CHECK;
1621	}	2332	}
1622		2333
1623	void noinline	2334	void noinline
1624	ev_timer_start (EV_P_ ev_timer *w)	2335	ev_timer_start (EV_P_ ev_timer *w)
1625	{	2336	{
1626	if (expect_false (ev_is_active (w)))	2337	if (expect_false (ev_is_active (w)))
1627	return;	2338	return;
1628		2339
1629	((WT)w)->at += mn_now;	2340	ev_at (w) += mn_now;
1630		2341
1631	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2342	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1632		2343
		2344	EV_FREQUENT_CHECK;
		2345
		2346	++timercnt;
1633	ev_start (EV_A_ (W)w, ++timercnt);	2347	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1634	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	2348	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1635	timers [timercnt - 1] = w;	2349	ANHE_w (timers [ev_active (w)]) = (WT)w;
1636	upheap ((WT *)timers, timercnt - 1);	2350	ANHE_at_cache (timers [ev_active (w)]);
		2351	upheap (timers, ev_active (w));
1637		2352
		2353	EV_FREQUENT_CHECK;
		2354
1638	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	2355	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1639	}	2356	}
1640		2357
1641	void noinline	2358	void noinline
1642	ev_timer_stop (EV_P_ ev_timer *w)	2359	ev_timer_stop (EV_P_ ev_timer *w)
1643	{	2360	{
1644	clear_pending (EV_A_ (W)w);	2361	clear_pending (EV_A_ (W)w);
1645	if (expect_false (!ev_is_active (w)))	2362	if (expect_false (!ev_is_active (w)))
1646	return;	2363	return;
1647		2364
1648	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	2365	EV_FREQUENT_CHECK;
1649		2366
1650	{	2367	{
1651	int active = ((W)w)->active;	2368	int active = ev_active (w);
1652		2369
		2370	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2371
		2372	--timercnt;
		2373
1653	if (expect_true (--active < --timercnt))	2374	if (expect_true (active < timercnt + HEAP0))
1654	{	2375	{
1655	timers [active] = timers [timercnt];	2376	timers [active] = timers [timercnt + HEAP0];
1656	adjustheap ((WT *)timers, timercnt, active);	2377	adjustheap (timers, timercnt, active);
1657	}	2378	}
1658	}	2379	}
1659		2380
1660	((WT)w)->at -= mn_now;	2381	EV_FREQUENT_CHECK;
		2382
		2383	ev_at (w) -= mn_now;
1661		2384
1662	ev_stop (EV_A_ (W)w);	2385	ev_stop (EV_A_ (W)w);
1663	}	2386	}
1664		2387
1665	void noinline	2388	void noinline
1666	ev_timer_again (EV_P_ ev_timer *w)	2389	ev_timer_again (EV_P_ ev_timer *w)
1667	{	2390	{
		2391	EV_FREQUENT_CHECK;
		2392
1668	if (ev_is_active (w))	2393	if (ev_is_active (w))
1669	{	2394	{
1670	if (w->repeat)	2395	if (w->repeat)
1671	{	2396	{
1672	((WT)w)->at = mn_now + w->repeat;	2397	ev_at (w) = mn_now + w->repeat;
		2398	ANHE_at_cache (timers [ev_active (w)]);
1673	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	2399	adjustheap (timers, timercnt, ev_active (w));
1674	}	2400	}
1675	else	2401	else
1676	ev_timer_stop (EV_A_ w);	2402	ev_timer_stop (EV_A_ w);
1677	}	2403	}
1678	else if (w->repeat)	2404	else if (w->repeat)
1679	{	2405	{
1680	w->at = w->repeat;	2406	ev_at (w) = w->repeat;
1681	ev_timer_start (EV_A_ w);	2407	ev_timer_start (EV_A_ w);
1682	}	2408	}
		2409
		2410	EV_FREQUENT_CHECK;
1683	}	2411	}
1684		2412
1685	#if EV_PERIODIC_ENABLE	2413	#if EV_PERIODIC_ENABLE
1686	void noinline	2414	void noinline
1687	ev_periodic_start (EV_P_ ev_periodic *w)	2415	ev_periodic_start (EV_P_ ev_periodic *w)
1688	{	2416	{
1689	if (expect_false (ev_is_active (w)))	2417	if (expect_false (ev_is_active (w)))
1690	return;	2418	return;
1691		2419
1692	if (w->reschedule_cb)	2420	if (w->reschedule_cb)
1693	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2421	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1694	else if (w->interval)	2422	else if (w->interval)
1695	{	2423	{
1696	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2424	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1697	/* this formula differs from the one in periodic_reify because we do not always round up */	2425	/* this formula differs from the one in periodic_reify because we do not always round up */
1698	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2426	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1699	}	2427	}
1700	else	2428	else
1701	((WT)w)->at = w->offset;	2429	ev_at (w) = w->offset;
1702		2430
		2431	EV_FREQUENT_CHECK;
		2432
		2433	++periodiccnt;
1703	ev_start (EV_A_ (W)w, ++periodiccnt);	2434	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1704	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	2435	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1705	periodics [periodiccnt - 1] = w;	2436	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1706	upheap ((WT *)periodics, periodiccnt - 1);	2437	ANHE_at_cache (periodics [ev_active (w)]);
		2438	upheap (periodics, ev_active (w));
1707		2439
		2440	EV_FREQUENT_CHECK;
		2441
1708	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	2442	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1709	}	2443	}
1710		2444
1711	void noinline	2445	void noinline
1712	ev_periodic_stop (EV_P_ ev_periodic *w)	2446	ev_periodic_stop (EV_P_ ev_periodic *w)
1713	{	2447	{
1714	clear_pending (EV_A_ (W)w);	2448	clear_pending (EV_A_ (W)w);
1715	if (expect_false (!ev_is_active (w)))	2449	if (expect_false (!ev_is_active (w)))
1716	return;	2450	return;
1717		2451
1718	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	2452	EV_FREQUENT_CHECK;
1719		2453
1720	{	2454	{
1721	int active = ((W)w)->active;	2455	int active = ev_active (w);
1722		2456
		2457	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2458
		2459	--periodiccnt;
		2460
1723	if (expect_true (--active < --periodiccnt))	2461	if (expect_true (active < periodiccnt + HEAP0))
1724	{	2462	{
1725	periodics [active] = periodics [periodiccnt];	2463	periodics [active] = periodics [periodiccnt + HEAP0];
1726	adjustheap ((WT *)periodics, periodiccnt, active);	2464	adjustheap (periodics, periodiccnt, active);
1727	}	2465	}
1728	}	2466	}
		2467
		2468	EV_FREQUENT_CHECK;
1729		2469
1730	ev_stop (EV_A_ (W)w);	2470	ev_stop (EV_A_ (W)w);
1731	}	2471	}
1732		2472
1733	void noinline	2473	void noinline
…		…
1745		2485
1746	void noinline	2486	void noinline
1747	ev_signal_start (EV_P_ ev_signal *w)	2487	ev_signal_start (EV_P_ ev_signal *w)
1748	{	2488	{
1749	#if EV_MULTIPLICITY	2489	#if EV_MULTIPLICITY
1750	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2490	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1751	#endif	2491	#endif
1752	if (expect_false (ev_is_active (w)))	2492	if (expect_false (ev_is_active (w)))
1753	return;	2493	return;
1754		2494
1755	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2495	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
		2496
		2497	evpipe_init (EV_A);
		2498
		2499	EV_FREQUENT_CHECK;
1756		2500
1757	{	2501	{
1758	#ifndef _WIN32	2502	#ifndef _WIN32
1759	sigset_t full, prev;	2503	sigset_t full, prev;
1760	sigfillset (&full);	2504	sigfillset (&full);
1761	sigprocmask (SIG_SETMASK, &full, &prev);	2505	sigprocmask (SIG_SETMASK, &full, &prev);
1762	#endif	2506	#endif
1763		2507
1764	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2508	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
1765		2509
1766	#ifndef _WIN32	2510	#ifndef _WIN32
1767	sigprocmask (SIG_SETMASK, &prev, 0);	2511	sigprocmask (SIG_SETMASK, &prev, 0);
1768	#endif	2512	#endif
1769	}	2513	}
1770		2514
1771	ev_start (EV_A_ (W)w, 1);	2515	ev_start (EV_A_ (W)w, 1);
1772	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2516	wlist_add (&signals [w->signum - 1].head, (WL)w);
1773		2517
1774	if (!((WL)w)->next)	2518	if (!((WL)w)->next)
1775	{	2519	{
1776	#if _WIN32	2520	#if _WIN32
1777	signal (w->signum, sighandler);	2521	signal (w->signum, ev_sighandler);
1778	#else	2522	#else
1779	struct sigaction sa;	2523	struct sigaction sa;
1780	sa.sa_handler = sighandler;	2524	sa.sa_handler = ev_sighandler;
1781	sigfillset (&sa.sa_mask);	2525	sigfillset (&sa.sa_mask);
1782	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2526	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1783	sigaction (w->signum, &sa, 0);	2527	sigaction (w->signum, &sa, 0);
1784	#endif	2528	#endif
1785	}	2529	}
		2530
		2531	EV_FREQUENT_CHECK;
1786	}	2532	}
1787		2533
1788	void noinline	2534	void noinline
1789	ev_signal_stop (EV_P_ ev_signal *w)	2535	ev_signal_stop (EV_P_ ev_signal *w)
1790	{	2536	{
1791	clear_pending (EV_A_ (W)w);	2537	clear_pending (EV_A_ (W)w);
1792	if (expect_false (!ev_is_active (w)))	2538	if (expect_false (!ev_is_active (w)))
1793	return;	2539	return;
1794		2540
		2541	EV_FREQUENT_CHECK;
		2542
1795	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2543	wlist_del (&signals [w->signum - 1].head, (WL)w);
1796	ev_stop (EV_A_ (W)w);	2544	ev_stop (EV_A_ (W)w);
1797		2545
1798	if (!signals [w->signum - 1].head)	2546	if (!signals [w->signum - 1].head)
1799	signal (w->signum, SIG_DFL);	2547	signal (w->signum, SIG_DFL);
		2548
		2549	EV_FREQUENT_CHECK;
1800	}	2550	}
1801		2551
1802	void	2552	void
1803	ev_child_start (EV_P_ ev_child *w)	2553	ev_child_start (EV_P_ ev_child *w)
1804	{	2554	{
1805	#if EV_MULTIPLICITY	2555	#if EV_MULTIPLICITY
1806	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2556	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1807	#endif	2557	#endif
1808	if (expect_false (ev_is_active (w)))	2558	if (expect_false (ev_is_active (w)))
1809	return;	2559	return;
1810		2560
		2561	EV_FREQUENT_CHECK;
		2562
1811	ev_start (EV_A_ (W)w, 1);	2563	ev_start (EV_A_ (W)w, 1);
1812	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2564	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2565
		2566	EV_FREQUENT_CHECK;
1813	}	2567	}
1814		2568
1815	void	2569	void
1816	ev_child_stop (EV_P_ ev_child *w)	2570	ev_child_stop (EV_P_ ev_child *w)
1817	{	2571	{
1818	clear_pending (EV_A_ (W)w);	2572	clear_pending (EV_A_ (W)w);
1819	if (expect_false (!ev_is_active (w)))	2573	if (expect_false (!ev_is_active (w)))
1820	return;	2574	return;
1821		2575
		2576	EV_FREQUENT_CHECK;
		2577
1822	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2578	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1823	ev_stop (EV_A_ (W)w);	2579	ev_stop (EV_A_ (W)w);
		2580
		2581	EV_FREQUENT_CHECK;
1824	}	2582	}
1825		2583
1826	#if EV_STAT_ENABLE	2584	#if EV_STAT_ENABLE
1827		2585
1828	# ifdef _WIN32	2586	# ifdef _WIN32
1829	# undef lstat	2587	# undef lstat
1830	# define lstat(a,b) _stati64 (a,b)	2588	# define lstat(a,b) _stati64 (a,b)
1831	# endif	2589	# endif
1832		2590
1833	#define DEF_STAT_INTERVAL 5.0074891	2591	#define DEF_STAT_INTERVAL 5.0074891
		2592	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1834	#define MIN_STAT_INTERVAL 0.1074891	2593	#define MIN_STAT_INTERVAL 0.1074891
1835		2594
1836	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2595	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1837		2596
1838	#if EV_USE_INOTIFY	2597	#if EV_USE_INOTIFY
1839	# define EV_INOTIFY_BUFSIZE 8192	2598	# define EV_INOTIFY_BUFSIZE 8192
…		…
1843	{	2602	{
1844	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);	2603	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);
1845		2604
1846	if (w->wd < 0)	2605	if (w->wd < 0)
1847	{	2606	{
		2607	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1848	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2608	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1849		2609
1850	/* monitor some parent directory for speedup hints */	2610	/* monitor some parent directory for speedup hints */
		2611	/* note that exceeding the hardcoded path limit is not a correctness issue, */
		2612	/* but an efficiency issue only */
1851	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2613	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1852	{	2614	{
1853	char path [4096];	2615	char path [4096];
1854	strcpy (path, w->path);	2616	strcpy (path, w->path);
1855		2617
…		…
1858	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2620	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1859	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2621	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1860		2622
1861	char *pend = strrchr (path, '/');	2623	char *pend = strrchr (path, '/');
1862		2624
1863	if (!pend)	2625	if (!pend || pend == path)
1864	break; /* whoops, no '/', complain to your admin */	2626	break;
1865		2627
1866	*pend = 0;	2628	*pend = 0;
1867	w->wd = inotify_add_watch (fs_fd, path, mask);	2629	w->wd = inotify_add_watch (fs_fd, path, mask);
1868	}	2630	}
1869	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2631	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1870	}	2632	}
1871	}	2633	}
1872	else
1873	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1874		2634
1875	if (w->wd >= 0)	2635	if (w->wd >= 0)
		2636	{
1876	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2637	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2638
		2639	/* now local changes will be tracked by inotify, but remote changes won't */
		2640	/* unless the filesystem it known to be local, we therefore still poll */
		2641	/* also do poll on <2.6.25, but with normal frequency */
		2642	struct statfs sfs;
		2643
		2644	if (fs_2625 && !statfs (w->path, &sfs))
		2645	if (sfs.f_type == 0x1373 /* devfs */
		2646	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2647	|| sfs.f_type == 0x3153464a /* jfs */
		2648	|| sfs.f_type == 0x52654973 /* reiser3 */
		2649	|| sfs.f_type == 0x01021994 /* tempfs */
		2650	|| sfs.f_type == 0x58465342 /* xfs */)
		2651	return;
		2652
		2653	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2654	ev_timer_again (EV_A_ &w->timer);
		2655	}
1877	}	2656	}
1878		2657
1879	static void noinline	2658	static void noinline
1880	infy_del (EV_P_ ev_stat *w)	2659	infy_del (EV_P_ ev_stat *w)
1881	{	2660	{
…		…
1895		2674
1896	static void noinline	2675	static void noinline
1897	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2676	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1898	{	2677	{
1899	if (slot < 0)	2678	if (slot < 0)
1900	/* overflow, need to check for all hahs slots */	2679	/* overflow, need to check for all hash slots */
1901	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2680	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1902	infy_wd (EV_A_ slot, wd, ev);	2681	infy_wd (EV_A_ slot, wd, ev);
1903	else	2682	else
1904	{	2683	{
1905	WL w_;	2684	WL w_;
…		…
1911		2690
1912	if (w->wd == wd || wd == -1)	2691	if (w->wd == wd || wd == -1)
1913	{	2692	{
1914	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2693	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1915	{	2694	{
		2695	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1916	w->wd = -1;	2696	w->wd = -1;
1917	infy_add (EV_A_ w); /* re-add, no matter what */	2697	infy_add (EV_A_ w); /* re-add, no matter what */
1918	}	2698	}
1919		2699
1920	stat_timer_cb (EV_A_ &w->timer, 0);	2700	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
1933		2713
1934	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2714	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1935	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2715	infy_wd (EV_A_ ev->wd, ev->wd, ev);
1936	}	2716	}
1937		2717
1938	void inline_size	2718	inline_size void
		2719	check_2625 (EV_P)
		2720	{
		2721	/* kernels < 2.6.25 are borked
		2722	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2723	*/
		2724	struct utsname buf;
		2725	int major, minor, micro;
		2726
		2727	if (uname (&buf))
		2728	return;
		2729
		2730	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2731	return;
		2732
		2733	if (major < 2
		2734	|| (major == 2 && minor < 6)
		2735	|| (major == 2 && minor == 6 && micro < 25))
		2736	return;
		2737
		2738	fs_2625 = 1;
		2739	}
		2740
		2741	inline_size void
1939	infy_init (EV_P)	2742	infy_init (EV_P)
1940	{	2743	{
1941	if (fs_fd != -2)	2744	if (fs_fd != -2)
1942	return;	2745	return;
		2746
		2747	fs_fd = -1;
		2748
		2749	check_2625 (EV_A);
1943		2750
1944	fs_fd = inotify_init ();	2751	fs_fd = inotify_init ();
1945		2752
1946	if (fs_fd >= 0)	2753	if (fs_fd >= 0)
1947	{	2754	{
…		…
1949	ev_set_priority (&fs_w, EV_MAXPRI);	2756	ev_set_priority (&fs_w, EV_MAXPRI);
1950	ev_io_start (EV_A_ &fs_w);	2757	ev_io_start (EV_A_ &fs_w);
1951	}	2758	}
1952	}	2759	}
1953		2760
1954	void inline_size	2761	inline_size void
1955	infy_fork (EV_P)	2762	infy_fork (EV_P)
1956	{	2763	{
1957	int slot;	2764	int slot;
1958		2765
1959	if (fs_fd < 0)	2766	if (fs_fd < 0)
…		…
1975	w->wd = -1;	2782	w->wd = -1;
1976		2783
1977	if (fs_fd >= 0)	2784	if (fs_fd >= 0)
1978	infy_add (EV_A_ w); /* re-add, no matter what */	2785	infy_add (EV_A_ w); /* re-add, no matter what */
1979	else	2786	else
1980	ev_timer_start (EV_A_ &w->timer);	2787	ev_timer_again (EV_A_ &w->timer);
1981	}	2788	}
1982
1983	}	2789	}
1984	}	2790	}
1985		2791
		2792	#endif
		2793
		2794	#ifdef _WIN32
		2795	# define EV_LSTAT(p,b) _stati64 (p, b)
		2796	#else
		2797	# define EV_LSTAT(p,b) lstat (p, b)
1986	#endif	2798	#endif
1987		2799
1988	void	2800	void
1989	ev_stat_stat (EV_P_ ev_stat *w)	2801	ev_stat_stat (EV_P_ ev_stat *w)
1990	{	2802	{
…		…
2017	|| w->prev.st_atime != w->attr.st_atime	2829	|| w->prev.st_atime != w->attr.st_atime
2018	|| w->prev.st_mtime != w->attr.st_mtime	2830	|| w->prev.st_mtime != w->attr.st_mtime
2019	|| w->prev.st_ctime != w->attr.st_ctime	2831	|| w->prev.st_ctime != w->attr.st_ctime
2020	) {	2832	) {
2021	#if EV_USE_INOTIFY	2833	#if EV_USE_INOTIFY
		2834	if (fs_fd >= 0)
		2835	{
2022	infy_del (EV_A_ w);	2836	infy_del (EV_A_ w);
2023	infy_add (EV_A_ w);	2837	infy_add (EV_A_ w);
2024	ev_stat_stat (EV_A_ w); /* avoid race... */	2838	ev_stat_stat (EV_A_ w); /* avoid race... */
		2839	}
2025	#endif	2840	#endif
2026		2841
2027	ev_feed_event (EV_A_ w, EV_STAT);	2842	ev_feed_event (EV_A_ w, EV_STAT);
2028	}	2843	}
2029	}	2844	}
…		…
2032	ev_stat_start (EV_P_ ev_stat *w)	2847	ev_stat_start (EV_P_ ev_stat *w)
2033	{	2848	{
2034	if (expect_false (ev_is_active (w)))	2849	if (expect_false (ev_is_active (w)))
2035	return;	2850	return;
2036		2851
2037	/* since we use memcmp, we need to clear any padding data etc. */
2038	memset (&w->prev, 0, sizeof (ev_statdata));
2039	memset (&w->attr, 0, sizeof (ev_statdata));
2040
2041	ev_stat_stat (EV_A_ w);	2852	ev_stat_stat (EV_A_ w);
2042		2853
		2854	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2043	if (w->interval < MIN_STAT_INTERVAL)	2855	w->interval = MIN_STAT_INTERVAL;
2044	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2045		2856
2046	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2857	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2047	ev_set_priority (&w->timer, ev_priority (w));	2858	ev_set_priority (&w->timer, ev_priority (w));
2048		2859
2049	#if EV_USE_INOTIFY	2860	#if EV_USE_INOTIFY
2050	infy_init (EV_A);	2861	infy_init (EV_A);
2051		2862
2052	if (fs_fd >= 0)	2863	if (fs_fd >= 0)
2053	infy_add (EV_A_ w);	2864	infy_add (EV_A_ w);
2054	else	2865	else
2055	#endif	2866	#endif
2056	ev_timer_start (EV_A_ &w->timer);	2867	ev_timer_again (EV_A_ &w->timer);
2057		2868
2058	ev_start (EV_A_ (W)w, 1);	2869	ev_start (EV_A_ (W)w, 1);
		2870
		2871	EV_FREQUENT_CHECK;
2059	}	2872	}
2060		2873
2061	void	2874	void
2062	ev_stat_stop (EV_P_ ev_stat *w)	2875	ev_stat_stop (EV_P_ ev_stat *w)
2063	{	2876	{
2064	clear_pending (EV_A_ (W)w);	2877	clear_pending (EV_A_ (W)w);
2065	if (expect_false (!ev_is_active (w)))	2878	if (expect_false (!ev_is_active (w)))
2066	return;	2879	return;
2067		2880
		2881	EV_FREQUENT_CHECK;
		2882
2068	#if EV_USE_INOTIFY	2883	#if EV_USE_INOTIFY
2069	infy_del (EV_A_ w);	2884	infy_del (EV_A_ w);
2070	#endif	2885	#endif
2071	ev_timer_stop (EV_A_ &w->timer);	2886	ev_timer_stop (EV_A_ &w->timer);
2072		2887
2073	ev_stop (EV_A_ (W)w);	2888	ev_stop (EV_A_ (W)w);
		2889
		2890	EV_FREQUENT_CHECK;
2074	}	2891	}
2075	#endif	2892	#endif
2076		2893
2077	#if EV_IDLE_ENABLE	2894	#if EV_IDLE_ENABLE
2078	void	2895	void
…		…
2080	{	2897	{
2081	if (expect_false (ev_is_active (w)))	2898	if (expect_false (ev_is_active (w)))
2082	return;	2899	return;
2083		2900
2084	pri_adjust (EV_A_ (W)w);	2901	pri_adjust (EV_A_ (W)w);
		2902
		2903	EV_FREQUENT_CHECK;
2085		2904
2086	{	2905	{
2087	int active = ++idlecnt [ABSPRI (w)];	2906	int active = ++idlecnt [ABSPRI (w)];
2088		2907
2089	++idleall;	2908	++idleall;
2090	ev_start (EV_A_ (W)w, active);	2909	ev_start (EV_A_ (W)w, active);
2091		2910
2092	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	2911	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2093	idles [ABSPRI (w)][active - 1] = w;	2912	idles [ABSPRI (w)][active - 1] = w;
2094	}	2913	}
		2914
		2915	EV_FREQUENT_CHECK;
2095	}	2916	}
2096		2917
2097	void	2918	void
2098	ev_idle_stop (EV_P_ ev_idle *w)	2919	ev_idle_stop (EV_P_ ev_idle *w)
2099	{	2920	{
2100	clear_pending (EV_A_ (W)w);	2921	clear_pending (EV_A_ (W)w);
2101	if (expect_false (!ev_is_active (w)))	2922	if (expect_false (!ev_is_active (w)))
2102	return;	2923	return;
2103		2924
		2925	EV_FREQUENT_CHECK;
		2926
2104	{	2927	{
2105	int active = ((W)w)->active;	2928	int active = ev_active (w);
2106		2929
2107	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2930	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2108	((W)idles [ABSPRI (w)][active - 1])->active = active;	2931	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2109		2932
2110	ev_stop (EV_A_ (W)w);	2933	ev_stop (EV_A_ (W)w);
2111	--idleall;	2934	--idleall;
2112	}	2935	}
		2936
		2937	EV_FREQUENT_CHECK;
2113	}	2938	}
2114	#endif	2939	#endif
2115		2940
2116	void	2941	void
2117	ev_prepare_start (EV_P_ ev_prepare *w)	2942	ev_prepare_start (EV_P_ ev_prepare *w)
2118	{	2943	{
2119	if (expect_false (ev_is_active (w)))	2944	if (expect_false (ev_is_active (w)))
2120	return;	2945	return;
		2946
		2947	EV_FREQUENT_CHECK;
2121		2948
2122	ev_start (EV_A_ (W)w, ++preparecnt);	2949	ev_start (EV_A_ (W)w, ++preparecnt);
2123	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	2950	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2124	prepares [preparecnt - 1] = w;	2951	prepares [preparecnt - 1] = w;
		2952
		2953	EV_FREQUENT_CHECK;
2125	}	2954	}
2126		2955
2127	void	2956	void
2128	ev_prepare_stop (EV_P_ ev_prepare *w)	2957	ev_prepare_stop (EV_P_ ev_prepare *w)
2129	{	2958	{
2130	clear_pending (EV_A_ (W)w);	2959	clear_pending (EV_A_ (W)w);
2131	if (expect_false (!ev_is_active (w)))	2960	if (expect_false (!ev_is_active (w)))
2132	return;	2961	return;
2133		2962
		2963	EV_FREQUENT_CHECK;
		2964
2134	{	2965	{
2135	int active = ((W)w)->active;	2966	int active = ev_active (w);
		2967
2136	prepares [active - 1] = prepares [--preparecnt];	2968	prepares [active - 1] = prepares [--preparecnt];
2137	((W)prepares [active - 1])->active = active;	2969	ev_active (prepares [active - 1]) = active;
2138	}	2970	}
2139		2971
2140	ev_stop (EV_A_ (W)w);	2972	ev_stop (EV_A_ (W)w);
		2973
		2974	EV_FREQUENT_CHECK;
2141	}	2975	}
2142		2976
2143	void	2977	void
2144	ev_check_start (EV_P_ ev_check *w)	2978	ev_check_start (EV_P_ ev_check *w)
2145	{	2979	{
2146	if (expect_false (ev_is_active (w)))	2980	if (expect_false (ev_is_active (w)))
2147	return;	2981	return;
		2982
		2983	EV_FREQUENT_CHECK;
2148		2984
2149	ev_start (EV_A_ (W)w, ++checkcnt);	2985	ev_start (EV_A_ (W)w, ++checkcnt);
2150	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	2986	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2151	checks [checkcnt - 1] = w;	2987	checks [checkcnt - 1] = w;
		2988
		2989	EV_FREQUENT_CHECK;
2152	}	2990	}
2153		2991
2154	void	2992	void
2155	ev_check_stop (EV_P_ ev_check *w)	2993	ev_check_stop (EV_P_ ev_check *w)
2156	{	2994	{
2157	clear_pending (EV_A_ (W)w);	2995	clear_pending (EV_A_ (W)w);
2158	if (expect_false (!ev_is_active (w)))	2996	if (expect_false (!ev_is_active (w)))
2159	return;	2997	return;
2160		2998
		2999	EV_FREQUENT_CHECK;
		3000
2161	{	3001	{
2162	int active = ((W)w)->active;	3002	int active = ev_active (w);
		3003
2163	checks [active - 1] = checks [--checkcnt];	3004	checks [active - 1] = checks [--checkcnt];
2164	((W)checks [active - 1])->active = active;	3005	ev_active (checks [active - 1]) = active;
2165	}	3006	}
2166		3007
2167	ev_stop (EV_A_ (W)w);	3008	ev_stop (EV_A_ (W)w);
		3009
		3010	EV_FREQUENT_CHECK;
2168	}	3011	}
2169		3012
2170	#if EV_EMBED_ENABLE	3013	#if EV_EMBED_ENABLE
2171	void noinline	3014	void noinline
2172	ev_embed_sweep (EV_P_ ev_embed *w)	3015	ev_embed_sweep (EV_P_ ev_embed *w)
2173	{	3016	{
2174	ev_loop (w->loop, EVLOOP_NONBLOCK);	3017	ev_loop (w->other, EVLOOP_NONBLOCK);
2175	}	3018	}
2176		3019
2177	static void	3020	static void
2178	embed_cb (EV_P_ ev_io *io, int revents)	3021	embed_io_cb (EV_P_ ev_io *io, int revents)
2179	{	3022	{
2180	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	3023	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2181		3024
2182	if (ev_cb (w))	3025	if (ev_cb (w))
2183	ev_feed_event (EV_A_ (W)w, EV_EMBED);	3026	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2184	else	3027	else
2185	ev_embed_sweep (loop, w);	3028	ev_loop (w->other, EVLOOP_NONBLOCK);
2186	}	3029	}
		3030
		3031	static void
		3032	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		3033	{
		3034	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		3035
		3036	{
		3037	struct ev_loop *loop = w->other;
		3038
		3039	while (fdchangecnt)
		3040	{
		3041	fd_reify (EV_A);
		3042	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3043	}
		3044	}
		3045	}
		3046
		3047	static void
		3048	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3049	{
		3050	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3051
		3052	ev_embed_stop (EV_A_ w);
		3053
		3054	{
		3055	struct ev_loop *loop = w->other;
		3056
		3057	ev_loop_fork (EV_A);
		3058	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3059	}
		3060
		3061	ev_embed_start (EV_A_ w);
		3062	}
		3063
		3064	#if 0
		3065	static void
		3066	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		3067	{
		3068	ev_idle_stop (EV_A_ idle);
		3069	}
		3070	#endif
2187		3071
2188	void	3072	void
2189	ev_embed_start (EV_P_ ev_embed *w)	3073	ev_embed_start (EV_P_ ev_embed *w)
2190	{	3074	{
2191	if (expect_false (ev_is_active (w)))	3075	if (expect_false (ev_is_active (w)))
2192	return;	3076	return;
2193		3077
2194	{	3078	{
2195	struct ev_loop *loop = w->loop;	3079	struct ev_loop *loop = w->other;
2196	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3080	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2197	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	3081	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2198	}	3082	}
		3083
		3084	EV_FREQUENT_CHECK;
2199		3085
2200	ev_set_priority (&w->io, ev_priority (w));	3086	ev_set_priority (&w->io, ev_priority (w));
2201	ev_io_start (EV_A_ &w->io);	3087	ev_io_start (EV_A_ &w->io);
2202		3088
		3089	ev_prepare_init (&w->prepare, embed_prepare_cb);
		3090	ev_set_priority (&w->prepare, EV_MINPRI);
		3091	ev_prepare_start (EV_A_ &w->prepare);
		3092
		3093	ev_fork_init (&w->fork, embed_fork_cb);
		3094	ev_fork_start (EV_A_ &w->fork);
		3095
		3096	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		3097
2203	ev_start (EV_A_ (W)w, 1);	3098	ev_start (EV_A_ (W)w, 1);
		3099
		3100	EV_FREQUENT_CHECK;
2204	}	3101	}
2205		3102
2206	void	3103	void
2207	ev_embed_stop (EV_P_ ev_embed *w)	3104	ev_embed_stop (EV_P_ ev_embed *w)
2208	{	3105	{
2209	clear_pending (EV_A_ (W)w);	3106	clear_pending (EV_A_ (W)w);
2210	if (expect_false (!ev_is_active (w)))	3107	if (expect_false (!ev_is_active (w)))
2211	return;	3108	return;
2212		3109
		3110	EV_FREQUENT_CHECK;
		3111
2213	ev_io_stop (EV_A_ &w->io);	3112	ev_io_stop (EV_A_ &w->io);
		3113	ev_prepare_stop (EV_A_ &w->prepare);
		3114	ev_fork_stop (EV_A_ &w->fork);
2214		3115
2215	ev_stop (EV_A_ (W)w);	3116	EV_FREQUENT_CHECK;
2216	}	3117	}
2217	#endif	3118	#endif
2218		3119
2219	#if EV_FORK_ENABLE	3120	#if EV_FORK_ENABLE
2220	void	3121	void
2221	ev_fork_start (EV_P_ ev_fork *w)	3122	ev_fork_start (EV_P_ ev_fork *w)
2222	{	3123	{
2223	if (expect_false (ev_is_active (w)))	3124	if (expect_false (ev_is_active (w)))
2224	return;	3125	return;
		3126
		3127	EV_FREQUENT_CHECK;
2225		3128
2226	ev_start (EV_A_ (W)w, ++forkcnt);	3129	ev_start (EV_A_ (W)w, ++forkcnt);
2227	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3130	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2228	forks [forkcnt - 1] = w;	3131	forks [forkcnt - 1] = w;
		3132
		3133	EV_FREQUENT_CHECK;
2229	}	3134	}
2230		3135
2231	void	3136	void
2232	ev_fork_stop (EV_P_ ev_fork *w)	3137	ev_fork_stop (EV_P_ ev_fork *w)
2233	{	3138	{
2234	clear_pending (EV_A_ (W)w);	3139	clear_pending (EV_A_ (W)w);
2235	if (expect_false (!ev_is_active (w)))	3140	if (expect_false (!ev_is_active (w)))
2236	return;	3141	return;
2237		3142
		3143	EV_FREQUENT_CHECK;
		3144
2238	{	3145	{
2239	int active = ((W)w)->active;	3146	int active = ev_active (w);
		3147
2240	forks [active - 1] = forks [--forkcnt];	3148	forks [active - 1] = forks [--forkcnt];
2241	((W)forks [active - 1])->active = active;	3149	ev_active (forks [active - 1]) = active;
2242	}	3150	}
2243		3151
2244	ev_stop (EV_A_ (W)w);	3152	ev_stop (EV_A_ (W)w);
		3153
		3154	EV_FREQUENT_CHECK;
		3155	}
		3156	#endif
		3157
		3158	#if EV_ASYNC_ENABLE
		3159	void
		3160	ev_async_start (EV_P_ ev_async *w)
		3161	{
		3162	if (expect_false (ev_is_active (w)))
		3163	return;
		3164
		3165	evpipe_init (EV_A);
		3166
		3167	EV_FREQUENT_CHECK;
		3168
		3169	ev_start (EV_A_ (W)w, ++asynccnt);
		3170	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		3171	asyncs [asynccnt - 1] = w;
		3172
		3173	EV_FREQUENT_CHECK;
		3174	}
		3175
		3176	void
		3177	ev_async_stop (EV_P_ ev_async *w)
		3178	{
		3179	clear_pending (EV_A_ (W)w);
		3180	if (expect_false (!ev_is_active (w)))
		3181	return;
		3182
		3183	EV_FREQUENT_CHECK;
		3184
		3185	{
		3186	int active = ev_active (w);
		3187
		3188	asyncs [active - 1] = asyncs [--asynccnt];
		3189	ev_active (asyncs [active - 1]) = active;
		3190	}
		3191
		3192	ev_stop (EV_A_ (W)w);
		3193
		3194	EV_FREQUENT_CHECK;
		3195	}
		3196
		3197	void
		3198	ev_async_send (EV_P_ ev_async *w)
		3199	{
		3200	w->sent = 1;
		3201	evpipe_write (EV_A_ &gotasync);
2245	}	3202	}
2246	#endif	3203	#endif
2247		3204
2248	/*****************************************************************************/	3205	/*****************************************************************************/
2249		3206
…		…
2259	once_cb (EV_P_ struct ev_once *once, int revents)	3216	once_cb (EV_P_ struct ev_once *once, int revents)
2260	{	3217	{
2261	void (*cb)(int revents, void *arg) = once->cb;	3218	void (*cb)(int revents, void *arg) = once->cb;
2262	void *arg = once->arg;	3219	void *arg = once->arg;
2263		3220
2264	ev_io_stop (EV_A_ &once->io);	3221	ev_io_stop (EV_A_ &once->io);
2265	ev_timer_stop (EV_A_ &once->to);	3222	ev_timer_stop (EV_A_ &once->to);
2266	ev_free (once);	3223	ev_free (once);
2267		3224
2268	cb (revents, arg);	3225	cb (revents, arg);
2269	}	3226	}
2270		3227
2271	static void	3228	static void
2272	once_cb_io (EV_P_ ev_io *w, int revents)	3229	once_cb_io (EV_P_ ev_io *w, int revents)
2273	{	3230	{
2274	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3231	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3232
		3233	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2275	}	3234	}
2276		3235
2277	static void	3236	static void
2278	once_cb_to (EV_P_ ev_timer *w, int revents)	3237	once_cb_to (EV_P_ ev_timer *w, int revents)
2279	{	3238	{
2280	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3239	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3240
		3241	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2281	}	3242	}
2282		3243
2283	void	3244	void
2284	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3245	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2285	{	3246	{
…		…
2307	ev_timer_set (&once->to, timeout, 0.);	3268	ev_timer_set (&once->to, timeout, 0.);
2308	ev_timer_start (EV_A_ &once->to);	3269	ev_timer_start (EV_A_ &once->to);
2309	}	3270	}
2310	}	3271	}
2311		3272
		3273	/*****************************************************************************/
		3274
		3275	#if EV_WALK_ENABLE
		3276	void
		3277	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3278	{
		3279	int i, j;
		3280	ev_watcher_list *wl, *wn;
		3281
		3282	if (types & (EV_IO | EV_EMBED))
		3283	for (i = 0; i < anfdmax; ++i)
		3284	for (wl = anfds [i].head; wl; )
		3285	{
		3286	wn = wl->next;
		3287
		3288	#if EV_EMBED_ENABLE
		3289	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3290	{
		3291	if (types & EV_EMBED)
		3292	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3293	}
		3294	else
		3295	#endif
		3296	#if EV_USE_INOTIFY
		3297	if (ev_cb ((ev_io *)wl) == infy_cb)
		3298	;
		3299	else
		3300	#endif
		3301	if ((ev_io *)wl != &pipe_w)
		3302	if (types & EV_IO)
		3303	cb (EV_A_ EV_IO, wl);
		3304
		3305	wl = wn;
		3306	}
		3307
		3308	if (types & (EV_TIMER | EV_STAT))
		3309	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3310	#if EV_STAT_ENABLE
		3311	/*TODO: timer is not always active*/
		3312	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3313	{
		3314	if (types & EV_STAT)
		3315	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3316	}
		3317	else
		3318	#endif
		3319	if (types & EV_TIMER)
		3320	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3321
		3322	#if EV_PERIODIC_ENABLE
		3323	if (types & EV_PERIODIC)
		3324	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3325	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3326	#endif
		3327
		3328	#if EV_IDLE_ENABLE
		3329	if (types & EV_IDLE)
		3330	for (j = NUMPRI; i--; )
		3331	for (i = idlecnt [j]; i--; )
		3332	cb (EV_A_ EV_IDLE, idles [j][i]);
		3333	#endif
		3334
		3335	#if EV_FORK_ENABLE
		3336	if (types & EV_FORK)
		3337	for (i = forkcnt; i--; )
		3338	if (ev_cb (forks [i]) != embed_fork_cb)
		3339	cb (EV_A_ EV_FORK, forks [i]);
		3340	#endif
		3341
		3342	#if EV_ASYNC_ENABLE
		3343	if (types & EV_ASYNC)
		3344	for (i = asynccnt; i--; )
		3345	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3346	#endif
		3347
		3348	if (types & EV_PREPARE)
		3349	for (i = preparecnt; i--; )
		3350	#if EV_EMBED_ENABLE
		3351	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3352	#endif
		3353	cb (EV_A_ EV_PREPARE, prepares [i]);
		3354
		3355	if (types & EV_CHECK)
		3356	for (i = checkcnt; i--; )
		3357	cb (EV_A_ EV_CHECK, checks [i]);
		3358
		3359	if (types & EV_SIGNAL)
		3360	for (i = 0; i < signalmax; ++i)
		3361	for (wl = signals [i].head; wl; )
		3362	{
		3363	wn = wl->next;
		3364	cb (EV_A_ EV_SIGNAL, wl);
		3365	wl = wn;
		3366	}
		3367
		3368	if (types & EV_CHILD)
		3369	for (i = EV_PID_HASHSIZE; i--; )
		3370	for (wl = childs [i]; wl; )
		3371	{
		3372	wn = wl->next;
		3373	cb (EV_A_ EV_CHILD, wl);
		3374	wl = wn;
		3375	}
		3376	/* EV_STAT 0x00001000 /* stat data changed */
		3377	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3378	}
		3379	#endif
		3380
		3381	#if EV_MULTIPLICITY
		3382	#include "ev_wrap.h"
		3383	#endif
		3384
2312	#ifdef __cplusplus	3385	#ifdef __cplusplus
2313	}	3386	}
2314	#endif	3387	#endif
2315		3388

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