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Comparing libev/ev.c (file contents):
Revision 1.175 by root, Tue Dec 11 04:08:54 2007 UTC vs.
Revision 1.294 by root, Wed Jul 8 02:46:05 2009 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* modification, are permitted provided that the following conditions are	8	* tion, are permitted provided that the following conditions are met:
9	* met:	9	*
		10	* 1. Redistributions of source code must retain the above copyright notice,
		11	* this list of conditions and the following disclaimer.
		12	*
		13	* 2. Redistributions in binary form must reproduce the above copyright
		14	* notice, this list of conditions and the following disclaimer in the
		15	* documentation and/or other materials provided with the distribution.
		16	*
		17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
		18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
		19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
		20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
		21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
		22	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
		23	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
		24	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
		25	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
		26	* OF THE POSSIBILITY OF SUCH DAMAGE.
10	*	27	*
11	* * Redistributions of source code must retain the above copyright	28	* Alternatively, the contents of this file may be used under the terms of
12	* notice, this list of conditions and the following disclaimer.	29	* the GNU General Public License ("GPL") version 2 or any later version,
13	*	30	* in which case the provisions of the GPL are applicable instead of
14	* * Redistributions in binary form must reproduce the above	31	* the above. If you wish to allow the use of your version of this file
15	* copyright notice, this list of conditions and the following	32	* only under the terms of the GPL and not to allow others to use your
16	* disclaimer in the documentation and/or other materials provided	33	* version of this file under the BSD license, indicate your decision
17	* with the distribution.	34	* by deleting the provisions above and replace them with the notice
18	*	35	* and other provisions required by the GPL. If you do not delete the
19	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS	36	* provisions above, a recipient may use your version of this file under
20	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT	37	* either the BSD or the GPL.
21	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	38	*/
31		39
32	#ifdef __cplusplus	40	#ifdef __cplusplus
33	extern "C" {	41	extern "C" {
34	#endif	42	#endif
35		43
		44	/* this big block deduces configuration from config.h */
36	#ifndef EV_STANDALONE	45	#ifndef EV_STANDALONE
37	# ifdef EV_CONFIG_H	46	# ifdef EV_CONFIG_H
38	# include EV_CONFIG_H	47	# include EV_CONFIG_H
39	# else	48	# else
40	# include "config.h"	49	# include "config.h"
41	# endif	50	# endif
42		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
		64	# endif
		65
43	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
44	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
45	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
46	# endif	69	# endif
47	# ifndef EV_USE_REALTIME	70	# ifndef EV_USE_REALTIME
48	# define EV_USE_REALTIME 1	71	# define EV_USE_REALTIME 0
49	# endif	72	# endif
50	# else	73	# else
51	# ifndef EV_USE_MONOTONIC	74	# ifndef EV_USE_MONOTONIC
52	# define EV_USE_MONOTONIC 0	75	# define EV_USE_MONOTONIC 0
53	# endif	76	# endif
54	# ifndef EV_USE_REALTIME	77	# ifndef EV_USE_REALTIME
55	# define EV_USE_REALTIME 0	78	# define EV_USE_REALTIME 0
		79	# endif
		80	# endif
		81
		82	# ifndef EV_USE_NANOSLEEP
		83	# if HAVE_NANOSLEEP
		84	# define EV_USE_NANOSLEEP 1
		85	# else
		86	# define EV_USE_NANOSLEEP 0
56	# endif	87	# endif
57	# endif	88	# endif
58		89
59	# ifndef EV_USE_SELECT	90	# ifndef EV_USE_SELECT
60	# if HAVE_SELECT && HAVE_SYS_SELECT_H	91	# if HAVE_SELECT && HAVE_SYS_SELECT_H
…		…
102	# else	133	# else
103	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
104	# endif	135	# endif
105	# endif	136	# endif
106		137
		138	# ifndef EV_USE_EVENTFD
		139	# if HAVE_EVENTFD
		140	# define EV_USE_EVENTFD 1
		141	# else
		142	# define EV_USE_EVENTFD 0
		143	# endif
		144	# endif
		145
107	#endif	146	#endif
108		147
109	#include <math.h>	148	#include <math.h>
110	#include <stdlib.h>	149	#include <stdlib.h>
111	#include <fcntl.h>	150	#include <fcntl.h>
…		…
129	#ifndef _WIN32	168	#ifndef _WIN32
130	# include <sys/time.h>	169	# include <sys/time.h>
131	# include <sys/wait.h>	170	# include <sys/wait.h>
132	# include <unistd.h>	171	# include <unistd.h>
133	#else	172	#else
		173	# include <io.h>
134	# define WIN32_LEAN_AND_MEAN	174	# define WIN32_LEAN_AND_MEAN
135	# include <windows.h>	175	# include <windows.h>
136	# ifndef EV_SELECT_IS_WINSOCKET	176	# ifndef EV_SELECT_IS_WINSOCKET
137	# define EV_SELECT_IS_WINSOCKET 1	177	# define EV_SELECT_IS_WINSOCKET 1
138	# endif	178	# endif
139	#endif	179	#endif
140		180
141	/**/	181	/* this block tries to deduce configuration from header-defined symbols and defaults */
		182
		183	#ifndef EV_USE_CLOCK_SYSCALL
		184	# if __linux && __GLIBC__ >= 2
		185	# define EV_USE_CLOCK_SYSCALL 1
		186	# else
		187	# define EV_USE_CLOCK_SYSCALL 0
		188	# endif
		189	#endif
142		190
143	#ifndef EV_USE_MONOTONIC	191	#ifndef EV_USE_MONOTONIC
		192	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		193	# define EV_USE_MONOTONIC 1
		194	# else
144	# define EV_USE_MONOTONIC 0	195	# define EV_USE_MONOTONIC 0
		196	# endif
145	#endif	197	#endif
146		198
147	#ifndef EV_USE_REALTIME	199	#ifndef EV_USE_REALTIME
148	# define EV_USE_REALTIME 0	200	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
		201	#endif
		202
		203	#ifndef EV_USE_NANOSLEEP
		204	# if _POSIX_C_SOURCE >= 199309L
		205	# define EV_USE_NANOSLEEP 1
		206	# else
		207	# define EV_USE_NANOSLEEP 0
		208	# endif
149	#endif	209	#endif
150		210
151	#ifndef EV_USE_SELECT	211	#ifndef EV_USE_SELECT
152	# define EV_USE_SELECT 1	212	# define EV_USE_SELECT 1
153	#endif	213	#endif
…		…
159	# define EV_USE_POLL 1	219	# define EV_USE_POLL 1
160	# endif	220	# endif
161	#endif	221	#endif
162		222
163	#ifndef EV_USE_EPOLL	223	#ifndef EV_USE_EPOLL
		224	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		225	# define EV_USE_EPOLL 1
		226	# else
164	# define EV_USE_EPOLL 0	227	# define EV_USE_EPOLL 0
		228	# endif
165	#endif	229	#endif
166		230
167	#ifndef EV_USE_KQUEUE	231	#ifndef EV_USE_KQUEUE
168	# define EV_USE_KQUEUE 0	232	# define EV_USE_KQUEUE 0
169	#endif	233	#endif
…		…
171	#ifndef EV_USE_PORT	235	#ifndef EV_USE_PORT
172	# define EV_USE_PORT 0	236	# define EV_USE_PORT 0
173	#endif	237	#endif
174		238
175	#ifndef EV_USE_INOTIFY	239	#ifndef EV_USE_INOTIFY
		240	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		241	# define EV_USE_INOTIFY 1
		242	# else
176	# define EV_USE_INOTIFY 0	243	# define EV_USE_INOTIFY 0
		244	# endif
177	#endif	245	#endif
178		246
179	#ifndef EV_PID_HASHSIZE	247	#ifndef EV_PID_HASHSIZE
180	# if EV_MINIMAL	248	# if EV_MINIMAL
181	# define EV_PID_HASHSIZE 1	249	# define EV_PID_HASHSIZE 1
…		…
190	# else	258	# else
191	# define EV_INOTIFY_HASHSIZE 16	259	# define EV_INOTIFY_HASHSIZE 16
192	# endif	260	# endif
193	#endif	261	#endif
194		262
195	/**/	263	#ifndef EV_USE_EVENTFD
		264	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		265	# define EV_USE_EVENTFD 1
		266	# else
		267	# define EV_USE_EVENTFD 0
		268	# endif
		269	#endif
		270
		271	#if 0 /* debugging */
		272	# define EV_VERIFY 3
		273	# define EV_USE_4HEAP 1
		274	# define EV_HEAP_CACHE_AT 1
		275	#endif
		276
		277	#ifndef EV_VERIFY
		278	# define EV_VERIFY !EV_MINIMAL
		279	#endif
		280
		281	#ifndef EV_USE_4HEAP
		282	# define EV_USE_4HEAP !EV_MINIMAL
		283	#endif
		284
		285	#ifndef EV_HEAP_CACHE_AT
		286	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		287	#endif
		288
		289	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		290	/* which makes programs even slower. might work on other unices, too. */
		291	#if EV_USE_CLOCK_SYSCALL
		292	# include <syscall.h>
		293	# ifdef SYS_clock_gettime
		294	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		295	# undef EV_USE_MONOTONIC
		296	# define EV_USE_MONOTONIC 1
		297	# else
		298	# undef EV_USE_CLOCK_SYSCALL
		299	# define EV_USE_CLOCK_SYSCALL 0
		300	# endif
		301	#endif
		302
		303	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
196		304
197	#ifndef CLOCK_MONOTONIC	305	#ifndef CLOCK_MONOTONIC
198	# undef EV_USE_MONOTONIC	306	# undef EV_USE_MONOTONIC
199	# define EV_USE_MONOTONIC 0	307	# define EV_USE_MONOTONIC 0
200	#endif	308	#endif
…		…
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
		360
		361	/*
		362	* This is used to avoid floating point rounding problems.
		363	* It is added to ev_rt_now when scheduling periodics
		364	* to ensure progress, time-wise, even when rounding
		365	* errors are against us.
		366	* This value is good at least till the year 4000.
		367	* Better solutions welcome.
		368	*/
		369	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
220		370
221	#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) */
222	#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) */
223	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */	373	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
224		374
225	#if __GNUC__ >= 3	375	#if __GNUC__ >= 4
226	# define expect(expr,value) __builtin_expect ((expr),(value))	376	# define expect(expr,value) __builtin_expect ((expr),(value))
227	# define noinline __attribute__ ((noinline))	377	# define noinline __attribute__ ((noinline))
228	#else	378	#else
229	# define expect(expr,value) (expr)	379	# define expect(expr,value) (expr)
230	# define noinline	380	# define noinline
231	# if __STDC_VERSION__ < 199901L	381	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
232	# define inline	382	# define inline
233	# endif	383	# endif
234	#endif	384	#endif
235		385
236	#define expect_false(expr) expect ((expr) != 0, 0)	386	#define expect_false(expr) expect ((expr) != 0, 0)
…		…
251		401
252	typedef ev_watcher *W;	402	typedef ev_watcher *W;
253	typedef ev_watcher_list *WL;	403	typedef ev_watcher_list *WL;
254	typedef ev_watcher_time *WT;	404	typedef ev_watcher_time *WT;
255		405
		406	#define ev_active(w) ((W)(w))->active
		407	#define ev_at(w) ((WT)(w))->at
		408
		409	#if EV_USE_REALTIME
		410	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		411	/* giving it a reasonably high chance of working on typical architetcures */
		412	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		413	#endif
		414
		415	#if EV_USE_MONOTONIC
256	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	416	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		417	#endif
257		418
258	#ifdef _WIN32	419	#ifdef _WIN32
259	# include "ev_win32.c"	420	# include "ev_win32.c"
260	#endif	421	#endif
261		422
…		…
268	{	429	{
269	syserr_cb = cb;	430	syserr_cb = cb;
270	}	431	}
271		432
272	static void noinline	433	static void noinline
273	syserr (const char *msg)	434	ev_syserr (const char *msg)
274	{	435	{
275	if (!msg)	436	if (!msg)
276	msg = "(libev) system error";	437	msg = "(libev) system error";
277		438
278	if (syserr_cb)	439	if (syserr_cb)
…		…
282	perror (msg);	443	perror (msg);
283	abort ();	444	abort ();
284	}	445	}
285	}	446	}
286		447
		448	static void *
		449	ev_realloc_emul (void *ptr, long size)
		450	{
		451	/* some systems, notably openbsd and darwin, fail to properly
		452	* implement realloc (x, 0) (as required by both ansi c-98 and
		453	* the single unix specification, so work around them here.
		454	*/
		455
		456	if (size)
		457	return realloc (ptr, size);
		458
		459	free (ptr);
		460	return 0;
		461	}
		462
287	static void *(*alloc)(void *ptr, long size);	463	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
288		464
289	void	465	void
290	ev_set_allocator (void *(*cb)(void *ptr, long size))	466	ev_set_allocator (void *(*cb)(void *ptr, long size))
291	{	467	{
292	alloc = cb;	468	alloc = cb;
293	}	469	}
294		470
295	inline_speed void *	471	inline_speed void *
296	ev_realloc (void *ptr, long size)	472	ev_realloc (void *ptr, long size)
297	{	473	{
298	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	474	ptr = alloc (ptr, size);
299		475
300	if (!ptr && size)	476	if (!ptr && size)
301	{	477	{
302	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	478	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
303	abort ();	479	abort ();
…		…
309	#define ev_malloc(size) ev_realloc (0, (size))	485	#define ev_malloc(size) ev_realloc (0, (size))
310	#define ev_free(ptr) ev_realloc ((ptr), 0)	486	#define ev_free(ptr) ev_realloc ((ptr), 0)
311		487
312	/*****************************************************************************/	488	/*****************************************************************************/
313		489
		490	/* file descriptor info structure */
314	typedef struct	491	typedef struct
315	{	492	{
316	WL head;	493	WL head;
317	unsigned char events;	494	unsigned char events; /* the events watched for */
		495	unsigned char reify; /* flag set when this ANFD needs reification */
		496	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
318	unsigned char reify;	497	unsigned char unused;
		498	#if EV_USE_EPOLL
		499	unsigned int egen; /* generation counter to counter epoll bugs */
		500	#endif
319	#if EV_SELECT_IS_WINSOCKET	501	#if EV_SELECT_IS_WINSOCKET
320	SOCKET handle;	502	SOCKET handle;
321	#endif	503	#endif
322	} ANFD;	504	} ANFD;
323		505
		506	/* stores the pending event set for a given watcher */
324	typedef struct	507	typedef struct
325	{	508	{
326	W w;	509	W w;
327	int events;	510	int events; /* the pending event set for the given watcher */
328	} ANPENDING;	511	} ANPENDING;
329		512
330	#if EV_USE_INOTIFY	513	#if EV_USE_INOTIFY
		514	/* hash table entry per inotify-id */
331	typedef struct	515	typedef struct
332	{	516	{
333	WL head;	517	WL head;
334	} ANFS;	518	} ANFS;
		519	#endif
		520
		521	/* Heap Entry */
		522	#if EV_HEAP_CACHE_AT
		523	/* a heap element */
		524	typedef struct {
		525	ev_tstamp at;
		526	WT w;
		527	} ANHE;
		528
		529	#define ANHE_w(he) (he).w /* access watcher, read-write */
		530	#define ANHE_at(he) (he).at /* access cached at, read-only */
		531	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		532	#else
		533	/* a heap element */
		534	typedef WT ANHE;
		535
		536	#define ANHE_w(he) (he)
		537	#define ANHE_at(he) (he)->at
		538	#define ANHE_at_cache(he)
335	#endif	539	#endif
336		540
337	#if EV_MULTIPLICITY	541	#if EV_MULTIPLICITY
338		542
339	struct ev_loop	543	struct ev_loop
…		…
360		564
361	#endif	565	#endif
362		566
363	/*****************************************************************************/	567	/*****************************************************************************/
364		568
		569	#ifndef EV_HAVE_EV_TIME
365	ev_tstamp	570	ev_tstamp
366	ev_time (void)	571	ev_time (void)
367	{	572	{
368	#if EV_USE_REALTIME	573	#if EV_USE_REALTIME
		574	if (expect_true (have_realtime))
		575	{
369	struct timespec ts;	576	struct timespec ts;
370	clock_gettime (CLOCK_REALTIME, &ts);	577	clock_gettime (CLOCK_REALTIME, &ts);
371	return ts.tv_sec + ts.tv_nsec * 1e-9;	578	return ts.tv_sec + ts.tv_nsec * 1e-9;
372	#else	579	}
		580	#endif
		581
373	struct timeval tv;	582	struct timeval tv;
374	gettimeofday (&tv, 0);	583	gettimeofday (&tv, 0);
375	return tv.tv_sec + tv.tv_usec * 1e-6;	584	return tv.tv_sec + tv.tv_usec * 1e-6;
376	#endif
377	}	585	}
		586	#endif
378		587
379	ev_tstamp inline_size	588	inline_size ev_tstamp
380	get_clock (void)	589	get_clock (void)
381	{	590	{
382	#if EV_USE_MONOTONIC	591	#if EV_USE_MONOTONIC
383	if (expect_true (have_monotonic))	592	if (expect_true (have_monotonic))
384	{	593	{
…		…
397	{	606	{
398	return ev_rt_now;	607	return ev_rt_now;
399	}	608	}
400	#endif	609	#endif
401		610
402	int inline_size	611	void
		612	ev_sleep (ev_tstamp delay)
		613	{
		614	if (delay > 0.)
		615	{
		616	#if EV_USE_NANOSLEEP
		617	struct timespec ts;
		618
		619	ts.tv_sec = (time_t)delay;
		620	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		621
		622	nanosleep (&ts, 0);
		623	#elif defined(_WIN32)
		624	Sleep ((unsigned long)(delay * 1e3));
		625	#else
		626	struct timeval tv;
		627
		628	tv.tv_sec = (time_t)delay;
		629	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		630
		631	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		632	/* somehting not guaranteed by newer posix versions, but guaranteed */
		633	/* by older ones */
		634	select (0, 0, 0, 0, &tv);
		635	#endif
		636	}
		637	}
		638
		639	/*****************************************************************************/
		640
		641	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		642
		643	/* find a suitable new size for the given array, */
		644	/* hopefully by rounding to a ncie-to-malloc size */
		645	inline_size int
403	array_nextsize (int elem, int cur, int cnt)	646	array_nextsize (int elem, int cur, int cnt)
404	{	647	{
405	int ncur = cur + 1;	648	int ncur = cur + 1;
406		649
407	do	650	do
408	ncur <<= 1;	651	ncur <<= 1;
409	while (cnt > ncur);	652	while (cnt > ncur);
410		653
411	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	654	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
412	if (elem * ncur > 4096)	655	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
413	{	656	{
414	ncur *= elem;	657	ncur *= elem;
415	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	658	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
416	ncur = ncur - sizeof (void *) * 4;	659	ncur = ncur - sizeof (void *) * 4;
417	ncur /= elem;	660	ncur /= elem;
418	}	661	}
419		662
420	return ncur;	663	return ncur;
…		…
424	array_realloc (int elem, void *base, int *cur, int cnt)	667	array_realloc (int elem, void *base, int *cur, int cnt)
425	{	668	{
426	*cur = array_nextsize (elem, *cur, cnt);	669	*cur = array_nextsize (elem, *cur, cnt);
427	return ev_realloc (base, elem * *cur);	670	return ev_realloc (base, elem * *cur);
428	}	671	}
		672
		673	#define array_init_zero(base,count) \
		674	memset ((void *)(base), 0, sizeof (*(base)) * (count))
429		675
430	#define array_needsize(type,base,cur,cnt,init) \	676	#define array_needsize(type,base,cur,cnt,init) \
431	if (expect_false ((cnt) > (cur))) \	677	if (expect_false ((cnt) > (cur))) \
432	{ \	678	{ \
433	int ocur_ = (cur); \	679	int ocur_ = (cur); \
…		…
445	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	691	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
446	}	692	}
447	#endif	693	#endif
448		694
449	#define array_free(stem, idx) \	695	#define array_free(stem, idx) \
450	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	696	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
451		697
452	/*****************************************************************************/	698	/*****************************************************************************/
		699
		700	/* dummy callback for pending events */
		701	static void noinline
		702	pendingcb (EV_P_ ev_prepare *w, int revents)
		703	{
		704	}
453		705
454	void noinline	706	void noinline
455	ev_feed_event (EV_P_ void *w, int revents)	707	ev_feed_event (EV_P_ void *w, int revents)
456	{	708	{
457	W w_ = (W)w;	709	W w_ = (W)w;
…		…
466	pendings [pri][w_->pending - 1].w = w_;	718	pendings [pri][w_->pending - 1].w = w_;
467	pendings [pri][w_->pending - 1].events = revents;	719	pendings [pri][w_->pending - 1].events = revents;
468	}	720	}
469	}	721	}
470		722
471	void inline_size	723	inline_speed void
		724	feed_reverse (EV_P_ W w)
		725	{
		726	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		727	rfeeds [rfeedcnt++] = w;
		728	}
		729
		730	inline_size void
		731	feed_reverse_done (EV_P_ int revents)
		732	{
		733	do
		734	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		735	while (rfeedcnt);
		736	}
		737
		738	inline_speed void
472	queue_events (EV_P_ W *events, int eventcnt, int type)	739	queue_events (EV_P_ W *events, int eventcnt, int type)
473	{	740	{
474	int i;	741	int i;
475		742
476	for (i = 0; i < eventcnt; ++i)	743	for (i = 0; i < eventcnt; ++i)
477	ev_feed_event (EV_A_ events [i], type);	744	ev_feed_event (EV_A_ events [i], type);
478	}	745	}
479		746
480	/*****************************************************************************/	747	/*****************************************************************************/
481		748
482	void inline_size	749	inline_speed void
483	anfds_init (ANFD *base, int count)
484	{
485	while (count--)
486	{
487	base->head = 0;
488	base->events = EV_NONE;
489	base->reify = 0;
490
491	++base;
492	}
493	}
494
495	void inline_speed
496	fd_event (EV_P_ int fd, int revents)	750	fd_event (EV_P_ int fd, int revents)
497	{	751	{
498	ANFD *anfd = anfds + fd;	752	ANFD *anfd = anfds + fd;
499	ev_io *w;	753	ev_io *w;
500		754
…		…
512	{	766	{
513	if (fd >= 0 && fd < anfdmax)	767	if (fd >= 0 && fd < anfdmax)
514	fd_event (EV_A_ fd, revents);	768	fd_event (EV_A_ fd, revents);
515	}	769	}
516		770
517	void inline_size	771	/* make sure the external fd watch events are in-sync */
		772	/* with the kernel/libev internal state */
		773	inline_size void
518	fd_reify (EV_P)	774	fd_reify (EV_P)
519	{	775	{
520	int i;	776	int i;
521		777
522	for (i = 0; i < fdchangecnt; ++i)	778	for (i = 0; i < fdchangecnt; ++i)
523	{	779	{
524	int fd = fdchanges [i];	780	int fd = fdchanges [i];
525	ANFD *anfd = anfds + fd;	781	ANFD *anfd = anfds + fd;
526	ev_io *w;	782	ev_io *w;
527		783
528	int events = 0;	784	unsigned char events = 0;
529		785
530	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	786	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
531	events |= w->events;	787	events |= (unsigned char)w->events;
532		788
533	#if EV_SELECT_IS_WINSOCKET	789	#if EV_SELECT_IS_WINSOCKET
534	if (events)	790	if (events)
535	{	791	{
536	unsigned long argp;	792	unsigned long arg;
		793	#ifdef EV_FD_TO_WIN32_HANDLE
		794	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		795	#else
537	anfd->handle = _get_osfhandle (fd);	796	anfd->handle = _get_osfhandle (fd);
		797	#endif
538	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	798	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
539	}	799	}
540	#endif	800	#endif
541		801
		802	{
		803	unsigned char o_events = anfd->events;
		804	unsigned char o_reify = anfd->reify;
		805
542	anfd->reify = 0;	806	anfd->reify = 0;
543
544	backend_modify (EV_A_ fd, anfd->events, events);
545	anfd->events = events;	807	anfd->events = events;
		808
		809	if (o_events != events || o_reify & EV__IOFDSET)
		810	backend_modify (EV_A_ fd, o_events, events);
		811	}
546	}	812	}
547		813
548	fdchangecnt = 0;	814	fdchangecnt = 0;
549	}	815	}
550		816
551	void inline_size	817	/* something about the given fd changed */
		818	inline_size void
552	fd_change (EV_P_ int fd)	819	fd_change (EV_P_ int fd, int flags)
553	{	820	{
554	if (expect_false (anfds [fd].reify))	821	unsigned char reify = anfds [fd].reify;
555	return;
556
557	anfds [fd].reify = 1;	822	anfds [fd].reify |= flags;
558		823
		824	if (expect_true (!reify))
		825	{
559	++fdchangecnt;	826	++fdchangecnt;
560	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	827	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
561	fdchanges [fdchangecnt - 1] = fd;	828	fdchanges [fdchangecnt - 1] = fd;
		829	}
562	}	830	}
563		831
564	void inline_speed	832	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		833	inline_speed void
565	fd_kill (EV_P_ int fd)	834	fd_kill (EV_P_ int fd)
566	{	835	{
567	ev_io *w;	836	ev_io *w;
568		837
569	while ((w = (ev_io *)anfds [fd].head))	838	while ((w = (ev_io *)anfds [fd].head))
…		…
571	ev_io_stop (EV_A_ w);	840	ev_io_stop (EV_A_ w);
572	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	841	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
573	}	842	}
574	}	843	}
575		844
576	int inline_size	845	/* check whether the given fd is atcually valid, for error recovery */
		846	inline_size int
577	fd_valid (int fd)	847	fd_valid (int fd)
578	{	848	{
579	#ifdef _WIN32	849	#ifdef _WIN32
580	return _get_osfhandle (fd) != -1;	850	return _get_osfhandle (fd) != -1;
581	#else	851	#else
…		…
589	{	859	{
590	int fd;	860	int fd;
591		861
592	for (fd = 0; fd < anfdmax; ++fd)	862	for (fd = 0; fd < anfdmax; ++fd)
593	if (anfds [fd].events)	863	if (anfds [fd].events)
594	if (!fd_valid (fd) == -1 && errno == EBADF)	864	if (!fd_valid (fd) && errno == EBADF)
595	fd_kill (EV_A_ fd);	865	fd_kill (EV_A_ fd);
596	}	866	}
597		867
598	/* called on ENOMEM in select/poll to kill some fds and retry */	868	/* called on ENOMEM in select/poll to kill some fds and retry */
599	static void noinline	869	static void noinline
…		…
617		887
618	for (fd = 0; fd < anfdmax; ++fd)	888	for (fd = 0; fd < anfdmax; ++fd)
619	if (anfds [fd].events)	889	if (anfds [fd].events)
620	{	890	{
621	anfds [fd].events = 0;	891	anfds [fd].events = 0;
		892	anfds [fd].emask = 0;
622	fd_change (EV_A_ fd);	893	fd_change (EV_A_ fd, EV__IOFDSET | 1);
623	}	894	}
624	}	895	}
625		896
626	/*****************************************************************************/	897	/*****************************************************************************/
627		898
628	void inline_speed	899	/*
629	upheap (WT *heap, int k)	900	* the heap functions want a real array index. array index 0 uis guaranteed to not
630	{	901	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
631	WT w = heap [k];	902	* the branching factor of the d-tree.
		903	*/
632		904
633	while (k && heap [k >> 1]->at > w->at)	905	/*
634	{	906	* at the moment we allow libev the luxury of two heaps,
635	heap [k] = heap [k >> 1];	907	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
636	((W)heap [k])->active = k + 1;	908	* which is more cache-efficient.
637	k >>= 1;	909	* the difference is about 5% with 50000+ watchers.
638	}	910	*/
		911	#if EV_USE_4HEAP
639		912
640	heap [k] = w;	913	#define DHEAP 4
641	((W)heap [k])->active = k + 1;	914	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		915	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		916	#define UPHEAP_DONE(p,k) ((p) == (k))
642		917
643	}	918	/* away from the root */
644		919	inline_speed void
645	void inline_speed
646	downheap (WT *heap, int N, int k)	920	downheap (ANHE *heap, int N, int k)
647	{	921	{
648	WT w = heap [k];	922	ANHE he = heap [k];
		923	ANHE *E = heap + N + HEAP0;
649		924
650	while (k < (N >> 1))	925	for (;;)
651	{	926	{
652	int j = k << 1;	927	ev_tstamp minat;
		928	ANHE *minpos;
		929	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
653		930
654	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	931	/* find minimum child */
		932	if (expect_true (pos + DHEAP - 1 < E))
655	++j;	933	{
656		934	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
657	if (w->at <= heap [j]->at)	935	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		936	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		937	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		938	}
		939	else if (pos < E)
		940	{
		941	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		942	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		943	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		944	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		945	}
		946	else
658	break;	947	break;
659		948
		949	if (ANHE_at (he) <= minat)
		950	break;
		951
		952	heap [k] = *minpos;
		953	ev_active (ANHE_w (*minpos)) = k;
		954
		955	k = minpos - heap;
		956	}
		957
		958	heap [k] = he;
		959	ev_active (ANHE_w (he)) = k;
		960	}
		961
		962	#else /* 4HEAP */
		963
		964	#define HEAP0 1
		965	#define HPARENT(k) ((k) >> 1)
		966	#define UPHEAP_DONE(p,k) (!(p))
		967
		968	/* away from the root */
		969	inline_speed void
		970	downheap (ANHE *heap, int N, int k)
		971	{
		972	ANHE he = heap [k];
		973
		974	for (;;)
		975	{
		976	int c = k << 1;
		977
		978	if (c > N + HEAP0 - 1)
		979	break;
		980
		981	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		982	? 1 : 0;
		983
		984	if (ANHE_at (he) <= ANHE_at (heap [c]))
		985	break;
		986
660	heap [k] = heap [j];	987	heap [k] = heap [c];
661	((W)heap [k])->active = k + 1;	988	ev_active (ANHE_w (heap [k])) = k;
		989
662	k = j;	990	k = c;
663	}	991	}
664		992
665	heap [k] = w;	993	heap [k] = he;
666	((W)heap [k])->active = k + 1;	994	ev_active (ANHE_w (he)) = k;
667	}	995	}
		996	#endif
668		997
669	void inline_size	998	/* towards the root */
		999	inline_speed void
		1000	upheap (ANHE *heap, int k)
		1001	{
		1002	ANHE he = heap [k];
		1003
		1004	for (;;)
		1005	{
		1006	int p = HPARENT (k);
		1007
		1008	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1009	break;
		1010
		1011	heap [k] = heap [p];
		1012	ev_active (ANHE_w (heap [k])) = k;
		1013	k = p;
		1014	}
		1015
		1016	heap [k] = he;
		1017	ev_active (ANHE_w (he)) = k;
		1018	}
		1019
		1020	/* move an element suitably so it is in a correct place */
		1021	inline_size void
670	adjustheap (WT *heap, int N, int k)	1022	adjustheap (ANHE *heap, int N, int k)
671	{	1023	{
		1024	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
672	upheap (heap, k);	1025	upheap (heap, k);
		1026	else
673	downheap (heap, N, k);	1027	downheap (heap, N, k);
		1028	}
		1029
		1030	/* rebuild the heap: this function is used only once and executed rarely */
		1031	inline_size void
		1032	reheap (ANHE *heap, int N)
		1033	{
		1034	int i;
		1035
		1036	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1037	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1038	for (i = 0; i < N; ++i)
		1039	upheap (heap, i + HEAP0);
674	}	1040	}
675		1041
676	/*****************************************************************************/	1042	/*****************************************************************************/
677		1043
		1044	/* associate signal watchers to a signal signal */
678	typedef struct	1045	typedef struct
679	{	1046	{
680	WL head;	1047	WL head;
681	sig_atomic_t volatile gotsig;	1048	EV_ATOMIC_T gotsig;
682	} ANSIG;	1049	} ANSIG;
683		1050
684	static ANSIG *signals;	1051	static ANSIG *signals;
685	static int signalmax;	1052	static int signalmax;
686		1053
687	static int sigpipe [2];	1054	static EV_ATOMIC_T gotsig;
688	static sig_atomic_t volatile gotsig;
689	static ev_io sigev;
690		1055
691	void inline_size	1056	/*****************************************************************************/
692	signals_init (ANSIG *base, int count)
693	{
694	while (count--)
695	{
696	base->head = 0;
697	base->gotsig = 0;
698		1057
699	++base;	1058	/* used to prepare libev internal fd's */
700	}	1059	/* this is not fork-safe */
701	}	1060	inline_speed void
702
703	static void
704	sighandler (int signum)
705	{
706	#if _WIN32
707	signal (signum, sighandler);
708	#endif
709
710	signals [signum - 1].gotsig = 1;
711
712	if (!gotsig)
713	{
714	int old_errno = errno;
715	gotsig = 1;
716	write (sigpipe [1], &signum, 1);
717	errno = old_errno;
718	}
719	}
720
721	void noinline
722	ev_feed_signal_event (EV_P_ int signum)
723	{
724	WL w;
725
726	#if EV_MULTIPLICITY
727	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
728	#endif
729
730	--signum;
731
732	if (signum < 0 || signum >= signalmax)
733	return;
734
735	signals [signum].gotsig = 0;
736
737	for (w = signals [signum].head; w; w = w->next)
738	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
739	}
740
741	static void
742	sigcb (EV_P_ ev_io *iow, int revents)
743	{
744	int signum;
745
746	read (sigpipe [0], &revents, 1);
747	gotsig = 0;
748
749	for (signum = signalmax; signum--; )
750	if (signals [signum].gotsig)
751	ev_feed_signal_event (EV_A_ signum + 1);
752	}
753
754	void inline_speed
755	fd_intern (int fd)	1061	fd_intern (int fd)
756	{	1062	{
757	#ifdef _WIN32	1063	#ifdef _WIN32
758	int arg = 1;	1064	unsigned long arg = 1;
759	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1065	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
760	#else	1066	#else
761	fcntl (fd, F_SETFD, FD_CLOEXEC);	1067	fcntl (fd, F_SETFD, FD_CLOEXEC);
762	fcntl (fd, F_SETFL, O_NONBLOCK);	1068	fcntl (fd, F_SETFL, O_NONBLOCK);
763	#endif	1069	#endif
764	}	1070	}
765		1071
766	static void noinline	1072	static void noinline
767	siginit (EV_P)	1073	evpipe_init (EV_P)
768	{	1074	{
		1075	if (!ev_is_active (&pipe_w))
		1076	{
		1077	#if EV_USE_EVENTFD
		1078	if ((evfd = eventfd (0, 0)) >= 0)
		1079	{
		1080	evpipe [0] = -1;
		1081	fd_intern (evfd);
		1082	ev_io_set (&pipe_w, evfd, EV_READ);
		1083	}
		1084	else
		1085	#endif
		1086	{
		1087	while (pipe (evpipe))
		1088	ev_syserr ("(libev) error creating signal/async pipe");
		1089
769	fd_intern (sigpipe [0]);	1090	fd_intern (evpipe [0]);
770	fd_intern (sigpipe [1]);	1091	fd_intern (evpipe [1]);
		1092	ev_io_set (&pipe_w, evpipe [0], EV_READ);
		1093	}
771		1094
772	ev_io_set (&sigev, sigpipe [0], EV_READ);
773	ev_io_start (EV_A_ &sigev);	1095	ev_io_start (EV_A_ &pipe_w);
774	ev_unref (EV_A); /* child watcher should not keep loop alive */	1096	ev_unref (EV_A); /* watcher should not keep loop alive */
		1097	}
		1098	}
		1099
		1100	inline_size void
		1101	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		1102	{
		1103	if (!*flag)
		1104	{
		1105	int old_errno = errno; /* save errno because write might clobber it */
		1106
		1107	*flag = 1;
		1108
		1109	#if EV_USE_EVENTFD
		1110	if (evfd >= 0)
		1111	{
		1112	uint64_t counter = 1;
		1113	write (evfd, &counter, sizeof (uint64_t));
		1114	}
		1115	else
		1116	#endif
		1117	write (evpipe [1], &old_errno, 1);
		1118
		1119	errno = old_errno;
		1120	}
		1121	}
		1122
		1123	/* called whenever the libev signal pipe */
		1124	/* got some events (signal, async) */
		1125	static void
		1126	pipecb (EV_P_ ev_io *iow, int revents)
		1127	{
		1128	#if EV_USE_EVENTFD
		1129	if (evfd >= 0)
		1130	{
		1131	uint64_t counter;
		1132	read (evfd, &counter, sizeof (uint64_t));
		1133	}
		1134	else
		1135	#endif
		1136	{
		1137	char dummy;
		1138	read (evpipe [0], &dummy, 1);
		1139	}
		1140
		1141	if (gotsig && ev_is_default_loop (EV_A))
		1142	{
		1143	int signum;
		1144	gotsig = 0;
		1145
		1146	for (signum = signalmax; signum--; )
		1147	if (signals [signum].gotsig)
		1148	ev_feed_signal_event (EV_A_ signum + 1);
		1149	}
		1150
		1151	#if EV_ASYNC_ENABLE
		1152	if (gotasync)
		1153	{
		1154	int i;
		1155	gotasync = 0;
		1156
		1157	for (i = asynccnt; i--; )
		1158	if (asyncs [i]->sent)
		1159	{
		1160	asyncs [i]->sent = 0;
		1161	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		1162	}
		1163	}
		1164	#endif
775	}	1165	}
776		1166
777	/*****************************************************************************/	1167	/*****************************************************************************/
778		1168
		1169	static void
		1170	ev_sighandler (int signum)
		1171	{
		1172	#if EV_MULTIPLICITY
		1173	struct ev_loop *loop = &default_loop_struct;
		1174	#endif
		1175
		1176	#if _WIN32
		1177	signal (signum, ev_sighandler);
		1178	#endif
		1179
		1180	signals [signum - 1].gotsig = 1;
		1181	evpipe_write (EV_A_ &gotsig);
		1182	}
		1183
		1184	void noinline
		1185	ev_feed_signal_event (EV_P_ int signum)
		1186	{
		1187	WL w;
		1188
		1189	#if EV_MULTIPLICITY
		1190	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		1191	#endif
		1192
		1193	--signum;
		1194
		1195	if (signum < 0 || signum >= signalmax)
		1196	return;
		1197
		1198	signals [signum].gotsig = 0;
		1199
		1200	for (w = signals [signum].head; w; w = w->next)
		1201	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		1202	}
		1203
		1204	/*****************************************************************************/
		1205
779	static ev_child *childs [EV_PID_HASHSIZE];	1206	static WL childs [EV_PID_HASHSIZE];
780		1207
781	#ifndef _WIN32	1208	#ifndef _WIN32
782		1209
783	static ev_signal childev;	1210	static ev_signal childev;
784		1211
785	void inline_speed	1212	#ifndef WIFCONTINUED
		1213	# define WIFCONTINUED(status) 0
		1214	#endif
		1215
		1216	/* handle a single child status event */
		1217	inline_speed void
786	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	1218	child_reap (EV_P_ int chain, int pid, int status)
787	{	1219	{
788	ev_child *w;	1220	ev_child *w;
		1221	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
789		1222
790	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1223	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1224	{
791	if (w->pid == pid || !w->pid)	1225	if ((w->pid == pid || !w->pid)
		1226	&& (!traced || (w->flags & 1)))
792	{	1227	{
793	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */	1228	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
794	w->rpid = pid;	1229	w->rpid = pid;
795	w->rstatus = status;	1230	w->rstatus = status;
796	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1231	ev_feed_event (EV_A_ (W)w, EV_CHILD);
797	}	1232	}
		1233	}
798	}	1234	}
799		1235
800	#ifndef WCONTINUED	1236	#ifndef WCONTINUED
801	# define WCONTINUED 0	1237	# define WCONTINUED 0
802	#endif	1238	#endif
803		1239
		1240	/* called on sigchld etc., calls waitpid */
804	static void	1241	static void
805	childcb (EV_P_ ev_signal *sw, int revents)	1242	childcb (EV_P_ ev_signal *sw, int revents)
806	{	1243	{
807	int pid, status;	1244	int pid, status;
808		1245
…		…
811	if (!WCONTINUED	1248	if (!WCONTINUED
812	|| errno != EINVAL	1249	|| errno != EINVAL
813	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))	1250	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
814	return;	1251	return;
815		1252
816	/* make sure we are called again until all childs have been reaped */	1253	/* make sure we are called again until all children have been reaped */
817	/* we need to do it this way so that the callback gets called before we continue */	1254	/* we need to do it this way so that the callback gets called before we continue */
818	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1255	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
819		1256
820	child_reap (EV_A_ sw, pid, pid, status);	1257	child_reap (EV_A_ pid, pid, status);
821	if (EV_PID_HASHSIZE > 1)	1258	if (EV_PID_HASHSIZE > 1)
822	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1259	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
823	}	1260	}
824		1261
825	#endif	1262	#endif
826		1263
827	/*****************************************************************************/	1264	/*****************************************************************************/
…		…
889	/* kqueue is borked on everything but netbsd apparently */	1326	/* kqueue is borked on everything but netbsd apparently */
890	/* it usually doesn't work correctly on anything but sockets and pipes */	1327	/* it usually doesn't work correctly on anything but sockets and pipes */
891	flags &= ~EVBACKEND_KQUEUE;	1328	flags &= ~EVBACKEND_KQUEUE;
892	#endif	1329	#endif
893	#ifdef __APPLE__	1330	#ifdef __APPLE__
894	// flags &= ~EVBACKEND_KQUEUE; for documentation	1331	/* only select works correctly on that "unix-certified" platform */
895	flags &= ~EVBACKEND_POLL;	1332	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1333	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
896	#endif	1334	#endif
897		1335
898	return flags;	1336	return flags;
899	}	1337	}
900		1338
901	unsigned int	1339	unsigned int
902	ev_embeddable_backends (void)	1340	ev_embeddable_backends (void)
903	{	1341	{
904	return EVBACKEND_EPOLL	1342	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
905	| EVBACKEND_KQUEUE	1343
906	| EVBACKEND_PORT;	1344	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1345	/* please fix it and tell me how to detect the fix */
		1346	flags &= ~EVBACKEND_EPOLL;
		1347
		1348	return flags;
907	}	1349	}
908		1350
909	unsigned int	1351	unsigned int
910	ev_backend (EV_P)	1352	ev_backend (EV_P)
911	{	1353	{
…		…
916	ev_loop_count (EV_P)	1358	ev_loop_count (EV_P)
917	{	1359	{
918	return loop_count;	1360	return loop_count;
919	}	1361	}
920		1362
		1363	unsigned int
		1364	ev_loop_depth (EV_P)
		1365	{
		1366	return loop_depth;
		1367	}
		1368
		1369	void
		1370	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1371	{
		1372	io_blocktime = interval;
		1373	}
		1374
		1375	void
		1376	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1377	{
		1378	timeout_blocktime = interval;
		1379	}
		1380
		1381	/* initialise a loop structure, must be zero-initialised */
921	static void noinline	1382	static void noinline
922	loop_init (EV_P_ unsigned int flags)	1383	loop_init (EV_P_ unsigned int flags)
923	{	1384	{
924	if (!backend)	1385	if (!backend)
925	{	1386	{
		1387	#if EV_USE_REALTIME
		1388	if (!have_realtime)
		1389	{
		1390	struct timespec ts;
		1391
		1392	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1393	have_realtime = 1;
		1394	}
		1395	#endif
		1396
926	#if EV_USE_MONOTONIC	1397	#if EV_USE_MONOTONIC
		1398	if (!have_monotonic)
927	{	1399	{
928	struct timespec ts;	1400	struct timespec ts;
		1401
929	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1402	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
930	have_monotonic = 1;	1403	have_monotonic = 1;
931	}	1404	}
932	#endif	1405	#endif
933		1406
934	ev_rt_now = ev_time ();	1407	ev_rt_now = ev_time ();
935	mn_now = get_clock ();	1408	mn_now = get_clock ();
936	now_floor = mn_now;	1409	now_floor = mn_now;
937	rtmn_diff = ev_rt_now - mn_now;	1410	rtmn_diff = ev_rt_now - mn_now;
		1411
		1412	io_blocktime = 0.;
		1413	timeout_blocktime = 0.;
		1414	backend = 0;
		1415	backend_fd = -1;
		1416	gotasync = 0;
		1417	#if EV_USE_INOTIFY
		1418	fs_fd = -2;
		1419	#endif
938		1420
939	/* pid check not overridable via env */	1421	/* pid check not overridable via env */
940	#ifndef _WIN32	1422	#ifndef _WIN32
941	if (flags & EVFLAG_FORKCHECK)	1423	if (flags & EVFLAG_FORKCHECK)
942	curpid = getpid ();	1424	curpid = getpid ();
…		…
945	if (!(flags & EVFLAG_NOENV)	1427	if (!(flags & EVFLAG_NOENV)
946	&& !enable_secure ()	1428	&& !enable_secure ()
947	&& getenv ("LIBEV_FLAGS"))	1429	&& getenv ("LIBEV_FLAGS"))
948	flags = atoi (getenv ("LIBEV_FLAGS"));	1430	flags = atoi (getenv ("LIBEV_FLAGS"));
949		1431
950	if (!(flags & 0x0000ffffUL))	1432	if (!(flags & 0x0000ffffU))
951	flags |= ev_recommended_backends ();	1433	flags |= ev_recommended_backends ();
952
953	backend = 0;
954	backend_fd = -1;
955	#if EV_USE_INOTIFY
956	fs_fd = -2;
957	#endif
958		1434
959	#if EV_USE_PORT	1435	#if EV_USE_PORT
960	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1436	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
961	#endif	1437	#endif
962	#if EV_USE_KQUEUE	1438	#if EV_USE_KQUEUE
…		…
970	#endif	1446	#endif
971	#if EV_USE_SELECT	1447	#if EV_USE_SELECT
972	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1448	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
973	#endif	1449	#endif
974		1450
		1451	ev_prepare_init (&pending_w, pendingcb);
		1452
975	ev_init (&sigev, sigcb);	1453	ev_init (&pipe_w, pipecb);
976	ev_set_priority (&sigev, EV_MAXPRI);	1454	ev_set_priority (&pipe_w, EV_MAXPRI);
977	}	1455	}
978	}	1456	}
979		1457
		1458	/* free up a loop structure */
980	static void noinline	1459	static void noinline
981	loop_destroy (EV_P)	1460	loop_destroy (EV_P)
982	{	1461	{
983	int i;	1462	int i;
		1463
		1464	if (ev_is_active (&pipe_w))
		1465	{
		1466	ev_ref (EV_A); /* signal watcher */
		1467	ev_io_stop (EV_A_ &pipe_w);
		1468
		1469	#if EV_USE_EVENTFD
		1470	if (evfd >= 0)
		1471	close (evfd);
		1472	#endif
		1473
		1474	if (evpipe [0] >= 0)
		1475	{
		1476	close (evpipe [0]);
		1477	close (evpipe [1]);
		1478	}
		1479	}
984		1480
985	#if EV_USE_INOTIFY	1481	#if EV_USE_INOTIFY
986	if (fs_fd >= 0)	1482	if (fs_fd >= 0)
987	close (fs_fd);	1483	close (fs_fd);
988	#endif	1484	#endif
…		…
1012	#if EV_IDLE_ENABLE	1508	#if EV_IDLE_ENABLE
1013	array_free (idle, [i]);	1509	array_free (idle, [i]);
1014	#endif	1510	#endif
1015	}	1511	}
1016		1512
		1513	ev_free (anfds); anfdmax = 0;
		1514
1017	/* have to use the microsoft-never-gets-it-right macro */	1515	/* have to use the microsoft-never-gets-it-right macro */
		1516	array_free (rfeed, EMPTY);
1018	array_free (fdchange, EMPTY);	1517	array_free (fdchange, EMPTY);
1019	array_free (timer, EMPTY);	1518	array_free (timer, EMPTY);
1020	#if EV_PERIODIC_ENABLE	1519	#if EV_PERIODIC_ENABLE
1021	array_free (periodic, EMPTY);	1520	array_free (periodic, EMPTY);
1022	#endif	1521	#endif
		1522	#if EV_FORK_ENABLE
		1523	array_free (fork, EMPTY);
		1524	#endif
1023	array_free (prepare, EMPTY);	1525	array_free (prepare, EMPTY);
1024	array_free (check, EMPTY);	1526	array_free (check, EMPTY);
		1527	#if EV_ASYNC_ENABLE
		1528	array_free (async, EMPTY);
		1529	#endif
1025		1530
1026	backend = 0;	1531	backend = 0;
1027	}	1532	}
1028		1533
		1534	#if EV_USE_INOTIFY
1029	void inline_size infy_fork (EV_P);	1535	inline_size void infy_fork (EV_P);
		1536	#endif
1030		1537
1031	void inline_size	1538	inline_size void
1032	loop_fork (EV_P)	1539	loop_fork (EV_P)
1033	{	1540	{
1034	#if EV_USE_PORT	1541	#if EV_USE_PORT
1035	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1542	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1036	#endif	1543	#endif
…		…
1042	#endif	1549	#endif
1043	#if EV_USE_INOTIFY	1550	#if EV_USE_INOTIFY
1044	infy_fork (EV_A);	1551	infy_fork (EV_A);
1045	#endif	1552	#endif
1046		1553
1047	if (ev_is_active (&sigev))	1554	if (ev_is_active (&pipe_w))
1048	{	1555	{
1049	/* default loop */	1556	/* this "locks" the handlers against writing to the pipe */
		1557	/* while we modify the fd vars */
		1558	gotsig = 1;
		1559	#if EV_ASYNC_ENABLE
		1560	gotasync = 1;
		1561	#endif
1050		1562
1051	ev_ref (EV_A);	1563	ev_ref (EV_A);
1052	ev_io_stop (EV_A_ &sigev);	1564	ev_io_stop (EV_A_ &pipe_w);
		1565
		1566	#if EV_USE_EVENTFD
		1567	if (evfd >= 0)
		1568	close (evfd);
		1569	#endif
		1570
		1571	if (evpipe [0] >= 0)
		1572	{
1053	close (sigpipe [0]);	1573	close (evpipe [0]);
1054	close (sigpipe [1]);	1574	close (evpipe [1]);
		1575	}
1055		1576
1056	while (pipe (sigpipe))
1057	syserr ("(libev) error creating pipe");
1058
1059	siginit (EV_A);	1577	evpipe_init (EV_A);
		1578	/* now iterate over everything, in case we missed something */
		1579	pipecb (EV_A_ &pipe_w, EV_READ);
1060	}	1580	}
1061		1581
1062	postfork = 0;	1582	postfork = 0;
1063	}	1583	}
1064		1584
1065	#if EV_MULTIPLICITY	1585	#if EV_MULTIPLICITY
		1586
1066	struct ev_loop *	1587	struct ev_loop *
1067	ev_loop_new (unsigned int flags)	1588	ev_loop_new (unsigned int flags)
1068	{	1589	{
1069	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1590	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1070		1591
…		…
1086	}	1607	}
1087		1608
1088	void	1609	void
1089	ev_loop_fork (EV_P)	1610	ev_loop_fork (EV_P)
1090	{	1611	{
1091	postfork = 1;	1612	postfork = 1; /* must be in line with ev_default_fork */
1092	}	1613	}
1093		1614
		1615	#if EV_VERIFY
		1616	static void noinline
		1617	verify_watcher (EV_P_ W w)
		1618	{
		1619	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1620
		1621	if (w->pending)
		1622	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1623	}
		1624
		1625	static void noinline
		1626	verify_heap (EV_P_ ANHE *heap, int N)
		1627	{
		1628	int i;
		1629
		1630	for (i = HEAP0; i < N + HEAP0; ++i)
		1631	{
		1632	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1633	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1634	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1635
		1636	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1637	}
		1638	}
		1639
		1640	static void noinline
		1641	array_verify (EV_P_ W *ws, int cnt)
		1642	{
		1643	while (cnt--)
		1644	{
		1645	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1646	verify_watcher (EV_A_ ws [cnt]);
		1647	}
		1648	}
		1649	#endif
		1650
		1651	void
		1652	ev_loop_verify (EV_P)
		1653	{
		1654	#if EV_VERIFY
		1655	int i;
		1656	WL w;
		1657
		1658	assert (activecnt >= -1);
		1659
		1660	assert (fdchangemax >= fdchangecnt);
		1661	for (i = 0; i < fdchangecnt; ++i)
		1662	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1663
		1664	assert (anfdmax >= 0);
		1665	for (i = 0; i < anfdmax; ++i)
		1666	for (w = anfds [i].head; w; w = w->next)
		1667	{
		1668	verify_watcher (EV_A_ (W)w);
		1669	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1670	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1671	}
		1672
		1673	assert (timermax >= timercnt);
		1674	verify_heap (EV_A_ timers, timercnt);
		1675
		1676	#if EV_PERIODIC_ENABLE
		1677	assert (periodicmax >= periodiccnt);
		1678	verify_heap (EV_A_ periodics, periodiccnt);
		1679	#endif
		1680
		1681	for (i = NUMPRI; i--; )
		1682	{
		1683	assert (pendingmax [i] >= pendingcnt [i]);
		1684	#if EV_IDLE_ENABLE
		1685	assert (idleall >= 0);
		1686	assert (idlemax [i] >= idlecnt [i]);
		1687	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1688	#endif
		1689	}
		1690
		1691	#if EV_FORK_ENABLE
		1692	assert (forkmax >= forkcnt);
		1693	array_verify (EV_A_ (W *)forks, forkcnt);
		1694	#endif
		1695
		1696	#if EV_ASYNC_ENABLE
		1697	assert (asyncmax >= asynccnt);
		1698	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1699	#endif
		1700
		1701	assert (preparemax >= preparecnt);
		1702	array_verify (EV_A_ (W *)prepares, preparecnt);
		1703
		1704	assert (checkmax >= checkcnt);
		1705	array_verify (EV_A_ (W *)checks, checkcnt);
		1706
		1707	# if 0
		1708	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1709	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1094	#endif	1710	# endif
		1711	#endif
		1712	}
		1713
		1714	#endif /* multiplicity */
1095		1715
1096	#if EV_MULTIPLICITY	1716	#if EV_MULTIPLICITY
1097	struct ev_loop *	1717	struct ev_loop *
1098	ev_default_loop_init (unsigned int flags)	1718	ev_default_loop_init (unsigned int flags)
1099	#else	1719	#else
1100	int	1720	int
1101	ev_default_loop (unsigned int flags)	1721	ev_default_loop (unsigned int flags)
1102	#endif	1722	#endif
1103	{	1723	{
1104	if (sigpipe [0] == sigpipe [1])
1105	if (pipe (sigpipe))
1106	return 0;
1107
1108	if (!ev_default_loop_ptr)	1724	if (!ev_default_loop_ptr)
1109	{	1725	{
1110	#if EV_MULTIPLICITY	1726	#if EV_MULTIPLICITY
1111	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1727	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1112	#else	1728	#else
…		…
1115		1731
1116	loop_init (EV_A_ flags);	1732	loop_init (EV_A_ flags);
1117		1733
1118	if (ev_backend (EV_A))	1734	if (ev_backend (EV_A))
1119	{	1735	{
1120	siginit (EV_A);
1121
1122	#ifndef _WIN32	1736	#ifndef _WIN32
1123	ev_signal_init (&childev, childcb, SIGCHLD);	1737	ev_signal_init (&childev, childcb, SIGCHLD);
1124	ev_set_priority (&childev, EV_MAXPRI);	1738	ev_set_priority (&childev, EV_MAXPRI);
1125	ev_signal_start (EV_A_ &childev);	1739	ev_signal_start (EV_A_ &childev);
1126	ev_unref (EV_A); /* child watcher should not keep loop alive */	1740	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1138	{	1752	{
1139	#if EV_MULTIPLICITY	1753	#if EV_MULTIPLICITY
1140	struct ev_loop *loop = ev_default_loop_ptr;	1754	struct ev_loop *loop = ev_default_loop_ptr;
1141	#endif	1755	#endif
1142		1756
		1757	ev_default_loop_ptr = 0;
		1758
1143	#ifndef _WIN32	1759	#ifndef _WIN32
1144	ev_ref (EV_A); /* child watcher */	1760	ev_ref (EV_A); /* child watcher */
1145	ev_signal_stop (EV_A_ &childev);	1761	ev_signal_stop (EV_A_ &childev);
1146	#endif	1762	#endif
1147		1763
1148	ev_ref (EV_A); /* signal watcher */
1149	ev_io_stop (EV_A_ &sigev);
1150
1151	close (sigpipe [0]); sigpipe [0] = 0;
1152	close (sigpipe [1]); sigpipe [1] = 0;
1153
1154	loop_destroy (EV_A);	1764	loop_destroy (EV_A);
1155	}	1765	}
1156		1766
1157	void	1767	void
1158	ev_default_fork (void)	1768	ev_default_fork (void)
1159	{	1769	{
1160	#if EV_MULTIPLICITY	1770	#if EV_MULTIPLICITY
1161	struct ev_loop *loop = ev_default_loop_ptr;	1771	struct ev_loop *loop = ev_default_loop_ptr;
1162	#endif	1772	#endif
1163		1773
1164	if (backend)	1774	postfork = 1; /* must be in line with ev_loop_fork */
1165	postfork = 1;
1166	}	1775	}
1167		1776
1168	/*****************************************************************************/	1777	/*****************************************************************************/
1169		1778
1170	void	1779	void
1171	ev_invoke (EV_P_ void *w, int revents)	1780	ev_invoke (EV_P_ void *w, int revents)
1172	{	1781	{
1173	EV_CB_INVOKE ((W)w, revents);	1782	EV_CB_INVOKE ((W)w, revents);
1174	}	1783	}
1175		1784
1176	void inline_speed	1785	inline_speed void
1177	call_pending (EV_P)	1786	call_pending (EV_P)
1178	{	1787	{
1179	int pri;	1788	int pri;
1180		1789
1181	for (pri = NUMPRI; pri--; )	1790	for (pri = NUMPRI; pri--; )
1182	while (pendingcnt [pri])	1791	while (pendingcnt [pri])
1183	{	1792	{
1184	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1793	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1185		1794
1186	if (expect_true (p->w))
1187	{
1188	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1795	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1796	/* ^ this is no longer true, as pending_w could be here */
1189		1797
1190	p->w->pending = 0;	1798	p->w->pending = 0;
1191	EV_CB_INVOKE (p->w, p->events);	1799	EV_CB_INVOKE (p->w, p->events);
1192	}	1800	EV_FREQUENT_CHECK;
1193	}	1801	}
1194	}	1802	}
1195		1803
1196	void inline_size
1197	timers_reify (EV_P)
1198	{
1199	while (timercnt && ((WT)timers [0])->at <= mn_now)
1200	{
1201	ev_timer *w = timers [0];
1202
1203	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1204
1205	/* first reschedule or stop timer */
1206	if (w->repeat)
1207	{
1208	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1209
1210	((WT)w)->at += w->repeat;
1211	if (((WT)w)->at < mn_now)
1212	((WT)w)->at = mn_now;
1213
1214	downheap ((WT *)timers, timercnt, 0);
1215	}
1216	else
1217	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1218
1219	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1220	}
1221	}
1222
1223	#if EV_PERIODIC_ENABLE
1224	void inline_size
1225	periodics_reify (EV_P)
1226	{
1227	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1228	{
1229	ev_periodic *w = periodics [0];
1230
1231	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1232
1233	/* first reschedule or stop timer */
1234	if (w->reschedule_cb)
1235	{
1236	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001220703125 /* 1/8192 */);
1237	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1238	downheap ((WT *)periodics, periodiccnt, 0);
1239	}
1240	else if (w->interval)
1241	{
1242	((WT)w)->at = w->offset + (floor ((ev_rt_now - w->offset) / w->interval) + 1.) * w->interval;
1243	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1244	downheap ((WT *)periodics, periodiccnt, 0);
1245	}
1246	else
1247	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1248
1249	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1250	}
1251	}
1252
1253	static void noinline
1254	periodics_reschedule (EV_P)
1255	{
1256	int i;
1257
1258	/* adjust periodics after time jump */
1259	for (i = 0; i < periodiccnt; ++i)
1260	{
1261	ev_periodic *w = periodics [i];
1262
1263	if (w->reschedule_cb)
1264	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1265	else if (w->interval)
1266	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1267	}
1268
1269	/* now rebuild the heap */
1270	for (i = periodiccnt >> 1; i--; )
1271	downheap ((WT *)periodics, periodiccnt, i);
1272	}
1273	#endif
1274
1275	#if EV_IDLE_ENABLE	1804	#if EV_IDLE_ENABLE
1276	void inline_size	1805	/* make idle watchers pending. this handles the "call-idle */
		1806	/* only when higher priorities are idle" logic */
		1807	inline_size void
1277	idle_reify (EV_P)	1808	idle_reify (EV_P)
1278	{	1809	{
1279	if (expect_false (idleall))	1810	if (expect_false (idleall))
1280	{	1811	{
1281	int pri;	1812	int pri;
…		…
1293	}	1824	}
1294	}	1825	}
1295	}	1826	}
1296	#endif	1827	#endif
1297		1828
1298	int inline_size	1829	/* make timers pending */
1299	time_update_monotonic (EV_P)	1830	inline_size void
		1831	timers_reify (EV_P)
1300	{	1832	{
		1833	EV_FREQUENT_CHECK;
		1834
		1835	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		1836	{
		1837	do
		1838	{
		1839	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1840
		1841	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1842
		1843	/* first reschedule or stop timer */
		1844	if (w->repeat)
		1845	{
		1846	ev_at (w) += w->repeat;
		1847	if (ev_at (w) < mn_now)
		1848	ev_at (w) = mn_now;
		1849
		1850	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1851
		1852	ANHE_at_cache (timers [HEAP0]);
		1853	downheap (timers, timercnt, HEAP0);
		1854	}
		1855	else
		1856	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1857
		1858	EV_FREQUENT_CHECK;
		1859	feed_reverse (EV_A_ (W)w);
		1860	}
		1861	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
		1862
		1863	feed_reverse_done (EV_A_ EV_TIMEOUT);
		1864	}
		1865	}
		1866
		1867	#if EV_PERIODIC_ENABLE
		1868	/* make periodics pending */
		1869	inline_size void
		1870	periodics_reify (EV_P)
		1871	{
		1872	EV_FREQUENT_CHECK;
		1873
		1874	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		1875	{
		1876	int feed_count = 0;
		1877
		1878	do
		1879	{
		1880	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1881
		1882	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1883
		1884	/* first reschedule or stop timer */
		1885	if (w->reschedule_cb)
		1886	{
		1887	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1888
		1889	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		1890
		1891	ANHE_at_cache (periodics [HEAP0]);
		1892	downheap (periodics, periodiccnt, HEAP0);
		1893	}
		1894	else if (w->interval)
		1895	{
		1896	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1897	/* if next trigger time is not sufficiently in the future, put it there */
		1898	/* this might happen because of floating point inexactness */
		1899	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1900	{
		1901	ev_at (w) += w->interval;
		1902
		1903	/* if interval is unreasonably low we might still have a time in the past */
		1904	/* so correct this. this will make the periodic very inexact, but the user */
		1905	/* has effectively asked to get triggered more often than possible */
		1906	if (ev_at (w) < ev_rt_now)
		1907	ev_at (w) = ev_rt_now;
		1908	}
		1909
		1910	ANHE_at_cache (periodics [HEAP0]);
		1911	downheap (periodics, periodiccnt, HEAP0);
		1912	}
		1913	else
		1914	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1915
		1916	EV_FREQUENT_CHECK;
		1917	feed_reverse (EV_A_ (W)w);
		1918	}
		1919	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
		1920
		1921	feed_reverse_done (EV_A_ EV_PERIODIC);
		1922	}
		1923	}
		1924
		1925	/* simply recalculate all periodics */
		1926	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
		1927	static void noinline
		1928	periodics_reschedule (EV_P)
		1929	{
		1930	int i;
		1931
		1932	/* adjust periodics after time jump */
		1933	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		1934	{
		1935	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		1936
		1937	if (w->reschedule_cb)
		1938	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1939	else if (w->interval)
		1940	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1941
		1942	ANHE_at_cache (periodics [i]);
		1943	}
		1944
		1945	reheap (periodics, periodiccnt);
		1946	}
		1947	#endif
		1948
		1949	/* adjust all timers by a given offset */
		1950	static void noinline
		1951	timers_reschedule (EV_P_ ev_tstamp adjust)
		1952	{
		1953	int i;
		1954
		1955	for (i = 0; i < timercnt; ++i)
		1956	{
		1957	ANHE *he = timers + i + HEAP0;
		1958	ANHE_w (*he)->at += adjust;
		1959	ANHE_at_cache (*he);
		1960	}
		1961	}
		1962
		1963	/* fetch new monotonic and realtime times from the kernel */
		1964	/* also detetc if there was a timejump, and act accordingly */
		1965	inline_speed void
		1966	time_update (EV_P_ ev_tstamp max_block)
		1967	{
		1968	#if EV_USE_MONOTONIC
		1969	if (expect_true (have_monotonic))
		1970	{
		1971	int i;
		1972	ev_tstamp odiff = rtmn_diff;
		1973
1301	mn_now = get_clock ();	1974	mn_now = get_clock ();
1302		1975
		1976	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1977	/* interpolate in the meantime */
1303	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1978	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1304	{	1979	{
1305	ev_rt_now = rtmn_diff + mn_now;	1980	ev_rt_now = rtmn_diff + mn_now;
1306	return 0;	1981	return;
1307	}	1982	}
1308	else	1983
1309	{
1310	now_floor = mn_now;	1984	now_floor = mn_now;
1311	ev_rt_now = ev_time ();	1985	ev_rt_now = ev_time ();
1312	return 1;
1313	}
1314	}
1315		1986
1316	void inline_size	1987	/* loop a few times, before making important decisions.
1317	time_update (EV_P)	1988	* on the choice of "4": one iteration isn't enough,
1318	{	1989	* in case we get preempted during the calls to
1319	int i;	1990	* ev_time and get_clock. a second call is almost guaranteed
1320		1991	* to succeed in that case, though. and looping a few more times
1321	#if EV_USE_MONOTONIC	1992	* doesn't hurt either as we only do this on time-jumps or
1322	if (expect_true (have_monotonic))	1993	* in the unlikely event of having been preempted here.
1323	{	1994	*/
1324	if (time_update_monotonic (EV_A))	1995	for (i = 4; --i; )
1325	{	1996	{
1326	ev_tstamp odiff = rtmn_diff;
1327
1328	/* loop a few times, before making important decisions.
1329	* on the choice of "4": one iteration isn't enough,
1330	* in case we get preempted during the calls to
1331	* ev_time and get_clock. a second call is almost guaranteed
1332	* to succeed in that case, though. and looping a few more times
1333	* doesn't hurt either as we only do this on time-jumps or
1334	* in the unlikely event of having been preempted here.
1335	*/
1336	for (i = 4; --i; )
1337	{
1338	rtmn_diff = ev_rt_now - mn_now;	1997	rtmn_diff = ev_rt_now - mn_now;
1339		1998
1340	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1999	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1341	return; /* all is well */	2000	return; /* all is well */
1342		2001
1343	ev_rt_now = ev_time ();	2002	ev_rt_now = ev_time ();
1344	mn_now = get_clock ();	2003	mn_now = get_clock ();
1345	now_floor = mn_now;	2004	now_floor = mn_now;
1346	}	2005	}
1347		2006
		2007	/* no timer adjustment, as the monotonic clock doesn't jump */
		2008	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1348	# if EV_PERIODIC_ENABLE	2009	# if EV_PERIODIC_ENABLE
1349	periodics_reschedule (EV_A);	2010	periodics_reschedule (EV_A);
1350	# endif	2011	# endif
1351	/* no timer adjustment, as the monotonic clock doesn't jump */
1352	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1353	}
1354	}	2012	}
1355	else	2013	else
1356	#endif	2014	#endif
1357	{	2015	{
1358	ev_rt_now = ev_time ();	2016	ev_rt_now = ev_time ();
1359		2017
1360	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	2018	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1361	{	2019	{
		2020	/* adjust timers. this is easy, as the offset is the same for all of them */
		2021	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1362	#if EV_PERIODIC_ENABLE	2022	#if EV_PERIODIC_ENABLE
1363	periodics_reschedule (EV_A);	2023	periodics_reschedule (EV_A);
1364	#endif	2024	#endif
1365
1366	/* adjust timers. this is easy, as the offset is the same for all of them */
1367	for (i = 0; i < timercnt; ++i)
1368	((WT)timers [i])->at += ev_rt_now - mn_now;
1369	}	2025	}
1370		2026
1371	mn_now = ev_rt_now;	2027	mn_now = ev_rt_now;
1372	}	2028	}
1373	}	2029	}
1374		2030
1375	void	2031	void
1376	ev_ref (EV_P)
1377	{
1378	++activecnt;
1379	}
1380
1381	void
1382	ev_unref (EV_P)
1383	{
1384	--activecnt;
1385	}
1386
1387	static int loop_done;
1388
1389	void
1390	ev_loop (EV_P_ int flags)	2032	ev_loop (EV_P_ int flags)
1391	{	2033	{
1392	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	2034	++loop_depth;
1393	? EVUNLOOP_ONE	2035
1394	: EVUNLOOP_CANCEL;	2036	loop_done = EVUNLOOP_CANCEL;
1395		2037
1396	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2038	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1397		2039
1398	do	2040	do
1399	{	2041	{
		2042	#if EV_VERIFY >= 2
		2043	ev_loop_verify (EV_A);
		2044	#endif
		2045
1400	#ifndef _WIN32	2046	#ifndef _WIN32
1401	if (expect_false (curpid)) /* penalise the forking check even more */	2047	if (expect_false (curpid)) /* penalise the forking check even more */
1402	if (expect_false (getpid () != curpid))	2048	if (expect_false (getpid () != curpid))
1403	{	2049	{
1404	curpid = getpid ();	2050	curpid = getpid ();
…		…
1421	{	2067	{
1422	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2068	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1423	call_pending (EV_A);	2069	call_pending (EV_A);
1424	}	2070	}
1425		2071
1426	if (expect_false (!activecnt))
1427	break;
1428
1429	/* we might have forked, so reify kernel state if necessary */	2072	/* we might have forked, so reify kernel state if necessary */
1430	if (expect_false (postfork))	2073	if (expect_false (postfork))
1431	loop_fork (EV_A);	2074	loop_fork (EV_A);
1432		2075
1433	/* update fd-related kernel structures */	2076	/* update fd-related kernel structures */
1434	fd_reify (EV_A);	2077	fd_reify (EV_A);
1435		2078
1436	/* calculate blocking time */	2079	/* calculate blocking time */
1437	{	2080	{
1438	ev_tstamp block;	2081	ev_tstamp waittime = 0.;
		2082	ev_tstamp sleeptime = 0.;
1439		2083
1440	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))	2084	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1441	block = 0.; /* do not block at all */
1442	else
1443	{	2085	{
		2086	/* remember old timestamp for io_blocktime calculation */
		2087	ev_tstamp prev_mn_now = mn_now;
		2088
1444	/* update time to cancel out callback processing overhead */	2089	/* update time to cancel out callback processing overhead */
1445	#if EV_USE_MONOTONIC
1446	if (expect_true (have_monotonic))
1447	time_update_monotonic (EV_A);	2090	time_update (EV_A_ 1e100);
1448	else
1449	#endif
1450	{
1451	ev_rt_now = ev_time ();
1452	mn_now = ev_rt_now;
1453	}
1454		2091
1455	block = MAX_BLOCKTIME;	2092	waittime = MAX_BLOCKTIME;
1456		2093
1457	if (timercnt)	2094	if (timercnt)
1458	{	2095	{
1459	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	2096	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1460	if (block > to) block = to;	2097	if (waittime > to) waittime = to;
1461	}	2098	}
1462		2099
1463	#if EV_PERIODIC_ENABLE	2100	#if EV_PERIODIC_ENABLE
1464	if (periodiccnt)	2101	if (periodiccnt)
1465	{	2102	{
1466	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	2103	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1467	if (block > to) block = to;	2104	if (waittime > to) waittime = to;
1468	}	2105	}
1469	#endif	2106	#endif
1470		2107
		2108	/* don't let timeouts decrease the waittime below timeout_blocktime */
		2109	if (expect_false (waittime < timeout_blocktime))
		2110	waittime = timeout_blocktime;
		2111
		2112	/* extra check because io_blocktime is commonly 0 */
1471	if (expect_false (block < 0.)) block = 0.;	2113	if (expect_false (io_blocktime))
		2114	{
		2115	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2116
		2117	if (sleeptime > waittime - backend_fudge)
		2118	sleeptime = waittime - backend_fudge;
		2119
		2120	if (expect_true (sleeptime > 0.))
		2121	{
		2122	ev_sleep (sleeptime);
		2123	waittime -= sleeptime;
		2124	}
		2125	}
1472	}	2126	}
1473		2127
1474	++loop_count;	2128	++loop_count;
1475	backend_poll (EV_A_ block);	2129	backend_poll (EV_A_ waittime);
		2130
		2131	/* update ev_rt_now, do magic */
		2132	time_update (EV_A_ waittime + sleeptime);
1476	}	2133	}
1477
1478	/* update ev_rt_now, do magic */
1479	time_update (EV_A);
1480		2134
1481	/* queue pending timers and reschedule them */	2135	/* queue pending timers and reschedule them */
1482	timers_reify (EV_A); /* relative timers called last */	2136	timers_reify (EV_A); /* relative timers called last */
1483	#if EV_PERIODIC_ENABLE	2137	#if EV_PERIODIC_ENABLE
1484	periodics_reify (EV_A); /* absolute timers called first */	2138	periodics_reify (EV_A); /* absolute timers called first */
…		…
1492	/* queue check watchers, to be executed first */	2146	/* queue check watchers, to be executed first */
1493	if (expect_false (checkcnt))	2147	if (expect_false (checkcnt))
1494	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2148	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1495		2149
1496	call_pending (EV_A);	2150	call_pending (EV_A);
1497
1498	}	2151	}
1499	while (expect_true (activecnt && !loop_done));	2152	while (expect_true (
		2153	activecnt
		2154	&& !loop_done
		2155	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		2156	));
1500		2157
1501	if (loop_done == EVUNLOOP_ONE)	2158	if (loop_done == EVUNLOOP_ONE)
1502	loop_done = EVUNLOOP_CANCEL;	2159	loop_done = EVUNLOOP_CANCEL;
		2160
		2161	--loop_depth;
1503	}	2162	}
1504		2163
1505	void	2164	void
1506	ev_unloop (EV_P_ int how)	2165	ev_unloop (EV_P_ int how)
1507	{	2166	{
1508	loop_done = how;	2167	loop_done = how;
1509	}	2168	}
1510		2169
		2170	void
		2171	ev_ref (EV_P)
		2172	{
		2173	++activecnt;
		2174	}
		2175
		2176	void
		2177	ev_unref (EV_P)
		2178	{
		2179	--activecnt;
		2180	}
		2181
		2182	void
		2183	ev_now_update (EV_P)
		2184	{
		2185	time_update (EV_A_ 1e100);
		2186	}
		2187
		2188	void
		2189	ev_suspend (EV_P)
		2190	{
		2191	ev_now_update (EV_A);
		2192	}
		2193
		2194	void
		2195	ev_resume (EV_P)
		2196	{
		2197	ev_tstamp mn_prev = mn_now;
		2198
		2199	ev_now_update (EV_A);
		2200	timers_reschedule (EV_A_ mn_now - mn_prev);
		2201	#if EV_PERIODIC_ENABLE
		2202	/* TODO: really do this? */
		2203	periodics_reschedule (EV_A);
		2204	#endif
		2205	}
		2206
1511	/*****************************************************************************/	2207	/*****************************************************************************/
		2208	/* singly-linked list management, used when the expected list length is short */
1512		2209
1513	void inline_size	2210	inline_size void
1514	wlist_add (WL *head, WL elem)	2211	wlist_add (WL *head, WL elem)
1515	{	2212	{
1516	elem->next = *head;	2213	elem->next = *head;
1517	*head = elem;	2214	*head = elem;
1518	}	2215	}
1519		2216
1520	void inline_size	2217	inline_size void
1521	wlist_del (WL *head, WL elem)	2218	wlist_del (WL *head, WL elem)
1522	{	2219	{
1523	while (*head)	2220	while (*head)
1524	{	2221	{
1525	if (*head == elem)	2222	if (*head == elem)
…		…
1530		2227
1531	head = &(*head)->next;	2228	head = &(*head)->next;
1532	}	2229	}
1533	}	2230	}
1534		2231
1535	void inline_speed	2232	/* internal, faster, version of ev_clear_pending */
		2233	inline_speed void
1536	clear_pending (EV_P_ W w)	2234	clear_pending (EV_P_ W w)
1537	{	2235	{
1538	if (w->pending)	2236	if (w->pending)
1539	{	2237	{
1540	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2238	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1541	w->pending = 0;	2239	w->pending = 0;
1542	}	2240	}
1543	}	2241	}
1544		2242
1545	int	2243	int
…		…
1549	int pending = w_->pending;	2247	int pending = w_->pending;
1550		2248
1551	if (expect_true (pending))	2249	if (expect_true (pending))
1552	{	2250	{
1553	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2251	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2252	p->w = (W)&pending_w;
1554	w_->pending = 0;	2253	w_->pending = 0;
1555	p->w = 0;
1556	return p->events;	2254	return p->events;
1557	}	2255	}
1558	else	2256	else
1559	return 0;	2257	return 0;
1560	}	2258	}
1561		2259
1562	void inline_size	2260	inline_size void
1563	pri_adjust (EV_P_ W w)	2261	pri_adjust (EV_P_ W w)
1564	{	2262	{
1565	int pri = w->priority;	2263	int pri = w->priority;
1566	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2264	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1567	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2265	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1568	w->priority = pri;	2266	w->priority = pri;
1569	}	2267	}
1570		2268
1571	void inline_speed	2269	inline_speed void
1572	ev_start (EV_P_ W w, int active)	2270	ev_start (EV_P_ W w, int active)
1573	{	2271	{
1574	pri_adjust (EV_A_ w);	2272	pri_adjust (EV_A_ w);
1575	w->active = active;	2273	w->active = active;
1576	ev_ref (EV_A);	2274	ev_ref (EV_A);
1577	}	2275	}
1578		2276
1579	void inline_size	2277	inline_size void
1580	ev_stop (EV_P_ W w)	2278	ev_stop (EV_P_ W w)
1581	{	2279	{
1582	ev_unref (EV_A);	2280	ev_unref (EV_A);
1583	w->active = 0;	2281	w->active = 0;
1584	}	2282	}
…		…
1591	int fd = w->fd;	2289	int fd = w->fd;
1592		2290
1593	if (expect_false (ev_is_active (w)))	2291	if (expect_false (ev_is_active (w)))
1594	return;	2292	return;
1595		2293
1596	assert (("ev_io_start called with negative fd", fd >= 0));	2294	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2295	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2296
		2297	EV_FREQUENT_CHECK;
1597		2298
1598	ev_start (EV_A_ (W)w, 1);	2299	ev_start (EV_A_ (W)w, 1);
1599	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2300	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1600	wlist_add ((WL *)&anfds[fd].head, (WL)w);	2301	wlist_add (&anfds[fd].head, (WL)w);
1601		2302
1602	fd_change (EV_A_ fd);	2303	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
		2304	w->events &= ~EV__IOFDSET;
		2305
		2306	EV_FREQUENT_CHECK;
1603	}	2307	}
1604		2308
1605	void noinline	2309	void noinline
1606	ev_io_stop (EV_P_ ev_io *w)	2310	ev_io_stop (EV_P_ ev_io *w)
1607	{	2311	{
1608	clear_pending (EV_A_ (W)w);	2312	clear_pending (EV_A_ (W)w);
1609	if (expect_false (!ev_is_active (w)))	2313	if (expect_false (!ev_is_active (w)))
1610	return;	2314	return;
1611		2315
1612	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2316	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1613		2317
		2318	EV_FREQUENT_CHECK;
		2319
1614	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	2320	wlist_del (&anfds[w->fd].head, (WL)w);
1615	ev_stop (EV_A_ (W)w);	2321	ev_stop (EV_A_ (W)w);
1616		2322
1617	fd_change (EV_A_ w->fd);	2323	fd_change (EV_A_ w->fd, 1);
		2324
		2325	EV_FREQUENT_CHECK;
1618	}	2326	}
1619		2327
1620	void noinline	2328	void noinline
1621	ev_timer_start (EV_P_ ev_timer *w)	2329	ev_timer_start (EV_P_ ev_timer *w)
1622	{	2330	{
1623	if (expect_false (ev_is_active (w)))	2331	if (expect_false (ev_is_active (w)))
1624	return;	2332	return;
1625		2333
1626	((WT)w)->at += mn_now;	2334	ev_at (w) += mn_now;
1627		2335
1628	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2336	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1629		2337
		2338	EV_FREQUENT_CHECK;
		2339
		2340	++timercnt;
1630	ev_start (EV_A_ (W)w, ++timercnt);	2341	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1631	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	2342	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1632	timers [timercnt - 1] = w;	2343	ANHE_w (timers [ev_active (w)]) = (WT)w;
1633	upheap ((WT *)timers, timercnt - 1);	2344	ANHE_at_cache (timers [ev_active (w)]);
		2345	upheap (timers, ev_active (w));
1634		2346
		2347	EV_FREQUENT_CHECK;
		2348
1635	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	2349	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1636	}	2350	}
1637		2351
1638	void noinline	2352	void noinline
1639	ev_timer_stop (EV_P_ ev_timer *w)	2353	ev_timer_stop (EV_P_ ev_timer *w)
1640	{	2354	{
1641	clear_pending (EV_A_ (W)w);	2355	clear_pending (EV_A_ (W)w);
1642	if (expect_false (!ev_is_active (w)))	2356	if (expect_false (!ev_is_active (w)))
1643	return;	2357	return;
1644		2358
1645	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	2359	EV_FREQUENT_CHECK;
1646		2360
1647	{	2361	{
1648	int active = ((W)w)->active;	2362	int active = ev_active (w);
1649		2363
		2364	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2365
		2366	--timercnt;
		2367
1650	if (expect_true (--active < --timercnt))	2368	if (expect_true (active < timercnt + HEAP0))
1651	{	2369	{
1652	timers [active] = timers [timercnt];	2370	timers [active] = timers [timercnt + HEAP0];
1653	adjustheap ((WT *)timers, timercnt, active);	2371	adjustheap (timers, timercnt, active);
1654	}	2372	}
1655	}	2373	}
1656		2374
1657	((WT)w)->at -= mn_now;	2375	EV_FREQUENT_CHECK;
		2376
		2377	ev_at (w) -= mn_now;
1658		2378
1659	ev_stop (EV_A_ (W)w);	2379	ev_stop (EV_A_ (W)w);
1660	}	2380	}
1661		2381
1662	void noinline	2382	void noinline
1663	ev_timer_again (EV_P_ ev_timer *w)	2383	ev_timer_again (EV_P_ ev_timer *w)
1664	{	2384	{
		2385	EV_FREQUENT_CHECK;
		2386
1665	if (ev_is_active (w))	2387	if (ev_is_active (w))
1666	{	2388	{
1667	if (w->repeat)	2389	if (w->repeat)
1668	{	2390	{
1669	((WT)w)->at = mn_now + w->repeat;	2391	ev_at (w) = mn_now + w->repeat;
		2392	ANHE_at_cache (timers [ev_active (w)]);
1670	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	2393	adjustheap (timers, timercnt, ev_active (w));
1671	}	2394	}
1672	else	2395	else
1673	ev_timer_stop (EV_A_ w);	2396	ev_timer_stop (EV_A_ w);
1674	}	2397	}
1675	else if (w->repeat)	2398	else if (w->repeat)
1676	{	2399	{
1677	w->at = w->repeat;	2400	ev_at (w) = w->repeat;
1678	ev_timer_start (EV_A_ w);	2401	ev_timer_start (EV_A_ w);
1679	}	2402	}
		2403
		2404	EV_FREQUENT_CHECK;
1680	}	2405	}
1681		2406
1682	#if EV_PERIODIC_ENABLE	2407	#if EV_PERIODIC_ENABLE
1683	void noinline	2408	void noinline
1684	ev_periodic_start (EV_P_ ev_periodic *w)	2409	ev_periodic_start (EV_P_ ev_periodic *w)
1685	{	2410	{
1686	if (expect_false (ev_is_active (w)))	2411	if (expect_false (ev_is_active (w)))
1687	return;	2412	return;
1688		2413
1689	if (w->reschedule_cb)	2414	if (w->reschedule_cb)
1690	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2415	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1691	else if (w->interval)	2416	else if (w->interval)
1692	{	2417	{
1693	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2418	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1694	/* this formula differs from the one in periodic_reify because we do not always round up */	2419	/* this formula differs from the one in periodic_reify because we do not always round up */
1695	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2420	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1696	}	2421	}
1697	else	2422	else
1698	((WT)w)->at = w->offset;	2423	ev_at (w) = w->offset;
1699		2424
		2425	EV_FREQUENT_CHECK;
		2426
		2427	++periodiccnt;
1700	ev_start (EV_A_ (W)w, ++periodiccnt);	2428	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1701	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	2429	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1702	periodics [periodiccnt - 1] = w;	2430	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1703	upheap ((WT *)periodics, periodiccnt - 1);	2431	ANHE_at_cache (periodics [ev_active (w)]);
		2432	upheap (periodics, ev_active (w));
1704		2433
		2434	EV_FREQUENT_CHECK;
		2435
1705	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	2436	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1706	}	2437	}
1707		2438
1708	void noinline	2439	void noinline
1709	ev_periodic_stop (EV_P_ ev_periodic *w)	2440	ev_periodic_stop (EV_P_ ev_periodic *w)
1710	{	2441	{
1711	clear_pending (EV_A_ (W)w);	2442	clear_pending (EV_A_ (W)w);
1712	if (expect_false (!ev_is_active (w)))	2443	if (expect_false (!ev_is_active (w)))
1713	return;	2444	return;
1714		2445
1715	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	2446	EV_FREQUENT_CHECK;
1716		2447
1717	{	2448	{
1718	int active = ((W)w)->active;	2449	int active = ev_active (w);
1719		2450
		2451	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2452
		2453	--periodiccnt;
		2454
1720	if (expect_true (--active < --periodiccnt))	2455	if (expect_true (active < periodiccnt + HEAP0))
1721	{	2456	{
1722	periodics [active] = periodics [periodiccnt];	2457	periodics [active] = periodics [periodiccnt + HEAP0];
1723	adjustheap ((WT *)periodics, periodiccnt, active);	2458	adjustheap (periodics, periodiccnt, active);
1724	}	2459	}
1725	}	2460	}
		2461
		2462	EV_FREQUENT_CHECK;
1726		2463
1727	ev_stop (EV_A_ (W)w);	2464	ev_stop (EV_A_ (W)w);
1728	}	2465	}
1729		2466
1730	void noinline	2467	void noinline
…		…
1742		2479
1743	void noinline	2480	void noinline
1744	ev_signal_start (EV_P_ ev_signal *w)	2481	ev_signal_start (EV_P_ ev_signal *w)
1745	{	2482	{
1746	#if EV_MULTIPLICITY	2483	#if EV_MULTIPLICITY
1747	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2484	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1748	#endif	2485	#endif
1749	if (expect_false (ev_is_active (w)))	2486	if (expect_false (ev_is_active (w)))
1750	return;	2487	return;
1751		2488
1752	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2489	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
		2490
		2491	evpipe_init (EV_A);
		2492
		2493	EV_FREQUENT_CHECK;
		2494
		2495	{
		2496	#ifndef _WIN32
		2497	sigset_t full, prev;
		2498	sigfillset (&full);
		2499	sigprocmask (SIG_SETMASK, &full, &prev);
		2500	#endif
		2501
		2502	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
		2503
		2504	#ifndef _WIN32
		2505	sigprocmask (SIG_SETMASK, &prev, 0);
		2506	#endif
		2507	}
1753		2508
1754	ev_start (EV_A_ (W)w, 1);	2509	ev_start (EV_A_ (W)w, 1);
1755	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1756	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2510	wlist_add (&signals [w->signum - 1].head, (WL)w);
1757		2511
1758	if (!((WL)w)->next)	2512	if (!((WL)w)->next)
1759	{	2513	{
1760	#if _WIN32	2514	#if _WIN32
1761	signal (w->signum, sighandler);	2515	signal (w->signum, ev_sighandler);
1762	#else	2516	#else
1763	struct sigaction sa;	2517	struct sigaction sa;
1764	sa.sa_handler = sighandler;	2518	sa.sa_handler = ev_sighandler;
1765	sigfillset (&sa.sa_mask);	2519	sigfillset (&sa.sa_mask);
1766	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2520	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1767	sigaction (w->signum, &sa, 0);	2521	sigaction (w->signum, &sa, 0);
1768	#endif	2522	#endif
1769	}	2523	}
		2524
		2525	EV_FREQUENT_CHECK;
1770	}	2526	}
1771		2527
1772	void noinline	2528	void noinline
1773	ev_signal_stop (EV_P_ ev_signal *w)	2529	ev_signal_stop (EV_P_ ev_signal *w)
1774	{	2530	{
1775	clear_pending (EV_A_ (W)w);	2531	clear_pending (EV_A_ (W)w);
1776	if (expect_false (!ev_is_active (w)))	2532	if (expect_false (!ev_is_active (w)))
1777	return;	2533	return;
1778		2534
		2535	EV_FREQUENT_CHECK;
		2536
1779	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2537	wlist_del (&signals [w->signum - 1].head, (WL)w);
1780	ev_stop (EV_A_ (W)w);	2538	ev_stop (EV_A_ (W)w);
1781		2539
1782	if (!signals [w->signum - 1].head)	2540	if (!signals [w->signum - 1].head)
1783	signal (w->signum, SIG_DFL);	2541	signal (w->signum, SIG_DFL);
		2542
		2543	EV_FREQUENT_CHECK;
1784	}	2544	}
1785		2545
1786	void	2546	void
1787	ev_child_start (EV_P_ ev_child *w)	2547	ev_child_start (EV_P_ ev_child *w)
1788	{	2548	{
1789	#if EV_MULTIPLICITY	2549	#if EV_MULTIPLICITY
1790	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2550	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1791	#endif	2551	#endif
1792	if (expect_false (ev_is_active (w)))	2552	if (expect_false (ev_is_active (w)))
1793	return;	2553	return;
1794		2554
		2555	EV_FREQUENT_CHECK;
		2556
1795	ev_start (EV_A_ (W)w, 1);	2557	ev_start (EV_A_ (W)w, 1);
1796	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2558	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2559
		2560	EV_FREQUENT_CHECK;
1797	}	2561	}
1798		2562
1799	void	2563	void
1800	ev_child_stop (EV_P_ ev_child *w)	2564	ev_child_stop (EV_P_ ev_child *w)
1801	{	2565	{
1802	clear_pending (EV_A_ (W)w);	2566	clear_pending (EV_A_ (W)w);
1803	if (expect_false (!ev_is_active (w)))	2567	if (expect_false (!ev_is_active (w)))
1804	return;	2568	return;
1805		2569
		2570	EV_FREQUENT_CHECK;
		2571
1806	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2572	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1807	ev_stop (EV_A_ (W)w);	2573	ev_stop (EV_A_ (W)w);
		2574
		2575	EV_FREQUENT_CHECK;
1808	}	2576	}
1809		2577
1810	#if EV_STAT_ENABLE	2578	#if EV_STAT_ENABLE
1811		2579
1812	# ifdef _WIN32	2580	# ifdef _WIN32
1813	# undef lstat	2581	# undef lstat
1814	# define lstat(a,b) _stati64 (a,b)	2582	# define lstat(a,b) _stati64 (a,b)
1815	# endif	2583	# endif
1816		2584
1817	#define DEF_STAT_INTERVAL 5.0074891	2585	#define DEF_STAT_INTERVAL 5.0074891
		2586	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1818	#define MIN_STAT_INTERVAL 0.1074891	2587	#define MIN_STAT_INTERVAL 0.1074891
1819		2588
1820	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2589	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1821		2590
1822	#if EV_USE_INOTIFY	2591	#if EV_USE_INOTIFY
1823	# define EV_INOTIFY_BUFSIZE 8192	2592	# define EV_INOTIFY_BUFSIZE 8192
…		…
1827	{	2596	{
1828	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);	2597	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
1829		2598
1830	if (w->wd < 0)	2599	if (w->wd < 0)
1831	{	2600	{
		2601	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1832	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2602	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1833		2603
1834	/* monitor some parent directory for speedup hints */	2604	/* monitor some parent directory for speedup hints */
		2605	/* note that exceeding the hardcoded path limit is not a correctness issue, */
		2606	/* but an efficiency issue only */
1835	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2607	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1836	{	2608	{
1837	char path [4096];	2609	char path [4096];
1838	strcpy (path, w->path);	2610	strcpy (path, w->path);
1839		2611
…		…
1842	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2614	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1843	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2615	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1844		2616
1845	char *pend = strrchr (path, '/');	2617	char *pend = strrchr (path, '/');
1846		2618
1847	if (!pend)	2619	if (!pend || pend == path)
1848	break; /* whoops, no '/', complain to your admin */	2620	break;
1849		2621
1850	*pend = 0;	2622	*pend = 0;
1851	w->wd = inotify_add_watch (fs_fd, path, mask);	2623	w->wd = inotify_add_watch (fs_fd, path, mask);
1852	}	2624	}
1853	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2625	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1854	}	2626	}
1855	}	2627	}
1856	else
1857	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1858		2628
1859	if (w->wd >= 0)	2629	if (w->wd >= 0)
		2630	{
1860	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2631	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2632
		2633	/* now local changes will be tracked by inotify, but remote changes won't */
		2634	/* unless the filesystem it known to be local, we therefore still poll */
		2635	/* also do poll on <2.6.25, but with normal frequency */
		2636	struct statfs sfs;
		2637
		2638	if (fs_2625 && !statfs (w->path, &sfs))
		2639	if (sfs.f_type == 0x1373 /* devfs */
		2640	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2641	|| sfs.f_type == 0x3153464a /* jfs */
		2642	|| sfs.f_type == 0x52654973 /* reiser3 */
		2643	|| sfs.f_type == 0x01021994 /* tempfs */
		2644	|| sfs.f_type == 0x58465342 /* xfs */)
		2645	return;
		2646
		2647	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2648	ev_timer_again (EV_A_ &w->timer);
		2649	}
1861	}	2650	}
1862		2651
1863	static void noinline	2652	static void noinline
1864	infy_del (EV_P_ ev_stat *w)	2653	infy_del (EV_P_ ev_stat *w)
1865	{	2654	{
…		…
1879		2668
1880	static void noinline	2669	static void noinline
1881	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2670	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1882	{	2671	{
1883	if (slot < 0)	2672	if (slot < 0)
1884	/* overflow, need to check for all hahs slots */	2673	/* overflow, need to check for all hash slots */
1885	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2674	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
1886	infy_wd (EV_A_ slot, wd, ev);	2675	infy_wd (EV_A_ slot, wd, ev);
1887	else	2676	else
1888	{	2677	{
1889	WL w_;	2678	WL w_;
…		…
1895		2684
1896	if (w->wd == wd || wd == -1)	2685	if (w->wd == wd || wd == -1)
1897	{	2686	{
1898	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2687	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1899	{	2688	{
		2689	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
1900	w->wd = -1;	2690	w->wd = -1;
1901	infy_add (EV_A_ w); /* re-add, no matter what */	2691	infy_add (EV_A_ w); /* re-add, no matter what */
1902	}	2692	}
1903		2693
1904	stat_timer_cb (EV_A_ &w->timer, 0);	2694	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
1917		2707
1918	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2708	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1919	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2709	infy_wd (EV_A_ ev->wd, ev->wd, ev);
1920	}	2710	}
1921		2711
1922	void inline_size	2712	inline_size void
		2713	check_2625 (EV_P)
		2714	{
		2715	/* kernels < 2.6.25 are borked
		2716	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2717	*/
		2718	struct utsname buf;
		2719	int major, minor, micro;
		2720
		2721	if (uname (&buf))
		2722	return;
		2723
		2724	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2725	return;
		2726
		2727	if (major < 2
		2728	|| (major == 2 && minor < 6)
		2729	|| (major == 2 && minor == 6 && micro < 25))
		2730	return;
		2731
		2732	fs_2625 = 1;
		2733	}
		2734
		2735	inline_size void
1923	infy_init (EV_P)	2736	infy_init (EV_P)
1924	{	2737	{
1925	if (fs_fd != -2)	2738	if (fs_fd != -2)
1926	return;	2739	return;
		2740
		2741	fs_fd = -1;
		2742
		2743	check_2625 (EV_A);
1927		2744
1928	fs_fd = inotify_init ();	2745	fs_fd = inotify_init ();
1929		2746
1930	if (fs_fd >= 0)	2747	if (fs_fd >= 0)
1931	{	2748	{
…		…
1933	ev_set_priority (&fs_w, EV_MAXPRI);	2750	ev_set_priority (&fs_w, EV_MAXPRI);
1934	ev_io_start (EV_A_ &fs_w);	2751	ev_io_start (EV_A_ &fs_w);
1935	}	2752	}
1936	}	2753	}
1937		2754
1938	void inline_size	2755	inline_size void
1939	infy_fork (EV_P)	2756	infy_fork (EV_P)
1940	{	2757	{
1941	int slot;	2758	int slot;
1942		2759
1943	if (fs_fd < 0)	2760	if (fs_fd < 0)
…		…
1959	w->wd = -1;	2776	w->wd = -1;
1960		2777
1961	if (fs_fd >= 0)	2778	if (fs_fd >= 0)
1962	infy_add (EV_A_ w); /* re-add, no matter what */	2779	infy_add (EV_A_ w); /* re-add, no matter what */
1963	else	2780	else
1964	ev_timer_start (EV_A_ &w->timer);	2781	ev_timer_again (EV_A_ &w->timer);
1965	}	2782	}
1966
1967	}	2783	}
1968	}	2784	}
1969		2785
		2786	#endif
		2787
		2788	#ifdef _WIN32
		2789	# define EV_LSTAT(p,b) _stati64 (p, b)
		2790	#else
		2791	# define EV_LSTAT(p,b) lstat (p, b)
1970	#endif	2792	#endif
1971		2793
1972	void	2794	void
1973	ev_stat_stat (EV_P_ ev_stat *w)	2795	ev_stat_stat (EV_P_ ev_stat *w)
1974	{	2796	{
…		…
2001	|| w->prev.st_atime != w->attr.st_atime	2823	|| w->prev.st_atime != w->attr.st_atime
2002	|| w->prev.st_mtime != w->attr.st_mtime	2824	|| w->prev.st_mtime != w->attr.st_mtime
2003	|| w->prev.st_ctime != w->attr.st_ctime	2825	|| w->prev.st_ctime != w->attr.st_ctime
2004	) {	2826	) {
2005	#if EV_USE_INOTIFY	2827	#if EV_USE_INOTIFY
		2828	if (fs_fd >= 0)
		2829	{
2006	infy_del (EV_A_ w);	2830	infy_del (EV_A_ w);
2007	infy_add (EV_A_ w);	2831	infy_add (EV_A_ w);
2008	ev_stat_stat (EV_A_ w); /* avoid race... */	2832	ev_stat_stat (EV_A_ w); /* avoid race... */
		2833	}
2009	#endif	2834	#endif
2010		2835
2011	ev_feed_event (EV_A_ w, EV_STAT);	2836	ev_feed_event (EV_A_ w, EV_STAT);
2012	}	2837	}
2013	}	2838	}
…		…
2016	ev_stat_start (EV_P_ ev_stat *w)	2841	ev_stat_start (EV_P_ ev_stat *w)
2017	{	2842	{
2018	if (expect_false (ev_is_active (w)))	2843	if (expect_false (ev_is_active (w)))
2019	return;	2844	return;
2020		2845
2021	/* since we use memcmp, we need to clear any padding data etc. */
2022	memset (&w->prev, 0, sizeof (ev_statdata));
2023	memset (&w->attr, 0, sizeof (ev_statdata));
2024
2025	ev_stat_stat (EV_A_ w);	2846	ev_stat_stat (EV_A_ w);
2026		2847
		2848	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2027	if (w->interval < MIN_STAT_INTERVAL)	2849	w->interval = MIN_STAT_INTERVAL;
2028	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2029		2850
2030	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2851	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2031	ev_set_priority (&w->timer, ev_priority (w));	2852	ev_set_priority (&w->timer, ev_priority (w));
2032		2853
2033	#if EV_USE_INOTIFY	2854	#if EV_USE_INOTIFY
2034	infy_init (EV_A);	2855	infy_init (EV_A);
2035		2856
2036	if (fs_fd >= 0)	2857	if (fs_fd >= 0)
2037	infy_add (EV_A_ w);	2858	infy_add (EV_A_ w);
2038	else	2859	else
2039	#endif	2860	#endif
2040	ev_timer_start (EV_A_ &w->timer);	2861	ev_timer_again (EV_A_ &w->timer);
2041		2862
2042	ev_start (EV_A_ (W)w, 1);	2863	ev_start (EV_A_ (W)w, 1);
		2864
		2865	EV_FREQUENT_CHECK;
2043	}	2866	}
2044		2867
2045	void	2868	void
2046	ev_stat_stop (EV_P_ ev_stat *w)	2869	ev_stat_stop (EV_P_ ev_stat *w)
2047	{	2870	{
2048	clear_pending (EV_A_ (W)w);	2871	clear_pending (EV_A_ (W)w);
2049	if (expect_false (!ev_is_active (w)))	2872	if (expect_false (!ev_is_active (w)))
2050	return;	2873	return;
2051		2874
		2875	EV_FREQUENT_CHECK;
		2876
2052	#if EV_USE_INOTIFY	2877	#if EV_USE_INOTIFY
2053	infy_del (EV_A_ w);	2878	infy_del (EV_A_ w);
2054	#endif	2879	#endif
2055	ev_timer_stop (EV_A_ &w->timer);	2880	ev_timer_stop (EV_A_ &w->timer);
2056		2881
2057	ev_stop (EV_A_ (W)w);	2882	ev_stop (EV_A_ (W)w);
		2883
		2884	EV_FREQUENT_CHECK;
2058	}	2885	}
2059	#endif	2886	#endif
2060		2887
2061	#if EV_IDLE_ENABLE	2888	#if EV_IDLE_ENABLE
2062	void	2889	void
…		…
2064	{	2891	{
2065	if (expect_false (ev_is_active (w)))	2892	if (expect_false (ev_is_active (w)))
2066	return;	2893	return;
2067		2894
2068	pri_adjust (EV_A_ (W)w);	2895	pri_adjust (EV_A_ (W)w);
		2896
		2897	EV_FREQUENT_CHECK;
2069		2898
2070	{	2899	{
2071	int active = ++idlecnt [ABSPRI (w)];	2900	int active = ++idlecnt [ABSPRI (w)];
2072		2901
2073	++idleall;	2902	++idleall;
2074	ev_start (EV_A_ (W)w, active);	2903	ev_start (EV_A_ (W)w, active);
2075		2904
2076	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	2905	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2077	idles [ABSPRI (w)][active - 1] = w;	2906	idles [ABSPRI (w)][active - 1] = w;
2078	}	2907	}
		2908
		2909	EV_FREQUENT_CHECK;
2079	}	2910	}
2080		2911
2081	void	2912	void
2082	ev_idle_stop (EV_P_ ev_idle *w)	2913	ev_idle_stop (EV_P_ ev_idle *w)
2083	{	2914	{
2084	clear_pending (EV_A_ (W)w);	2915	clear_pending (EV_A_ (W)w);
2085	if (expect_false (!ev_is_active (w)))	2916	if (expect_false (!ev_is_active (w)))
2086	return;	2917	return;
2087		2918
		2919	EV_FREQUENT_CHECK;
		2920
2088	{	2921	{
2089	int active = ((W)w)->active;	2922	int active = ev_active (w);
2090		2923
2091	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2924	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2092	((W)idles [ABSPRI (w)][active - 1])->active = active;	2925	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2093		2926
2094	ev_stop (EV_A_ (W)w);	2927	ev_stop (EV_A_ (W)w);
2095	--idleall;	2928	--idleall;
2096	}	2929	}
		2930
		2931	EV_FREQUENT_CHECK;
2097	}	2932	}
2098	#endif	2933	#endif
2099		2934
2100	void	2935	void
2101	ev_prepare_start (EV_P_ ev_prepare *w)	2936	ev_prepare_start (EV_P_ ev_prepare *w)
2102	{	2937	{
2103	if (expect_false (ev_is_active (w)))	2938	if (expect_false (ev_is_active (w)))
2104	return;	2939	return;
		2940
		2941	EV_FREQUENT_CHECK;
2105		2942
2106	ev_start (EV_A_ (W)w, ++preparecnt);	2943	ev_start (EV_A_ (W)w, ++preparecnt);
2107	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	2944	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2108	prepares [preparecnt - 1] = w;	2945	prepares [preparecnt - 1] = w;
		2946
		2947	EV_FREQUENT_CHECK;
2109	}	2948	}
2110		2949
2111	void	2950	void
2112	ev_prepare_stop (EV_P_ ev_prepare *w)	2951	ev_prepare_stop (EV_P_ ev_prepare *w)
2113	{	2952	{
2114	clear_pending (EV_A_ (W)w);	2953	clear_pending (EV_A_ (W)w);
2115	if (expect_false (!ev_is_active (w)))	2954	if (expect_false (!ev_is_active (w)))
2116	return;	2955	return;
2117		2956
		2957	EV_FREQUENT_CHECK;
		2958
2118	{	2959	{
2119	int active = ((W)w)->active;	2960	int active = ev_active (w);
		2961
2120	prepares [active - 1] = prepares [--preparecnt];	2962	prepares [active - 1] = prepares [--preparecnt];
2121	((W)prepares [active - 1])->active = active;	2963	ev_active (prepares [active - 1]) = active;
2122	}	2964	}
2123		2965
2124	ev_stop (EV_A_ (W)w);	2966	ev_stop (EV_A_ (W)w);
		2967
		2968	EV_FREQUENT_CHECK;
2125	}	2969	}
2126		2970
2127	void	2971	void
2128	ev_check_start (EV_P_ ev_check *w)	2972	ev_check_start (EV_P_ ev_check *w)
2129	{	2973	{
2130	if (expect_false (ev_is_active (w)))	2974	if (expect_false (ev_is_active (w)))
2131	return;	2975	return;
		2976
		2977	EV_FREQUENT_CHECK;
2132		2978
2133	ev_start (EV_A_ (W)w, ++checkcnt);	2979	ev_start (EV_A_ (W)w, ++checkcnt);
2134	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	2980	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2135	checks [checkcnt - 1] = w;	2981	checks [checkcnt - 1] = w;
		2982
		2983	EV_FREQUENT_CHECK;
2136	}	2984	}
2137		2985
2138	void	2986	void
2139	ev_check_stop (EV_P_ ev_check *w)	2987	ev_check_stop (EV_P_ ev_check *w)
2140	{	2988	{
2141	clear_pending (EV_A_ (W)w);	2989	clear_pending (EV_A_ (W)w);
2142	if (expect_false (!ev_is_active (w)))	2990	if (expect_false (!ev_is_active (w)))
2143	return;	2991	return;
2144		2992
		2993	EV_FREQUENT_CHECK;
		2994
2145	{	2995	{
2146	int active = ((W)w)->active;	2996	int active = ev_active (w);
		2997
2147	checks [active - 1] = checks [--checkcnt];	2998	checks [active - 1] = checks [--checkcnt];
2148	((W)checks [active - 1])->active = active;	2999	ev_active (checks [active - 1]) = active;
2149	}	3000	}
2150		3001
2151	ev_stop (EV_A_ (W)w);	3002	ev_stop (EV_A_ (W)w);
		3003
		3004	EV_FREQUENT_CHECK;
2152	}	3005	}
2153		3006
2154	#if EV_EMBED_ENABLE	3007	#if EV_EMBED_ENABLE
2155	void noinline	3008	void noinline
2156	ev_embed_sweep (EV_P_ ev_embed *w)	3009	ev_embed_sweep (EV_P_ ev_embed *w)
2157	{	3010	{
2158	ev_loop (w->loop, EVLOOP_NONBLOCK);	3011	ev_loop (w->other, EVLOOP_NONBLOCK);
2159	}	3012	}
2160		3013
2161	static void	3014	static void
2162	embed_cb (EV_P_ ev_io *io, int revents)	3015	embed_io_cb (EV_P_ ev_io *io, int revents)
2163	{	3016	{
2164	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	3017	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2165		3018
2166	if (ev_cb (w))	3019	if (ev_cb (w))
2167	ev_feed_event (EV_A_ (W)w, EV_EMBED);	3020	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2168	else	3021	else
2169	ev_embed_sweep (loop, w);	3022	ev_loop (w->other, EVLOOP_NONBLOCK);
2170	}	3023	}
		3024
		3025	static void
		3026	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		3027	{
		3028	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		3029
		3030	{
		3031	struct ev_loop *loop = w->other;
		3032
		3033	while (fdchangecnt)
		3034	{
		3035	fd_reify (EV_A);
		3036	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3037	}
		3038	}
		3039	}
		3040
		3041	static void
		3042	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3043	{
		3044	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3045
		3046	ev_embed_stop (EV_A_ w);
		3047
		3048	{
		3049	struct ev_loop *loop = w->other;
		3050
		3051	ev_loop_fork (EV_A);
		3052	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3053	}
		3054
		3055	ev_embed_start (EV_A_ w);
		3056	}
		3057
		3058	#if 0
		3059	static void
		3060	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		3061	{
		3062	ev_idle_stop (EV_A_ idle);
		3063	}
		3064	#endif
2171		3065
2172	void	3066	void
2173	ev_embed_start (EV_P_ ev_embed *w)	3067	ev_embed_start (EV_P_ ev_embed *w)
2174	{	3068	{
2175	if (expect_false (ev_is_active (w)))	3069	if (expect_false (ev_is_active (w)))
2176	return;	3070	return;
2177		3071
2178	{	3072	{
2179	struct ev_loop *loop = w->loop;	3073	struct ev_loop *loop = w->other;
2180	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3074	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2181	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	3075	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2182	}	3076	}
		3077
		3078	EV_FREQUENT_CHECK;
2183		3079
2184	ev_set_priority (&w->io, ev_priority (w));	3080	ev_set_priority (&w->io, ev_priority (w));
2185	ev_io_start (EV_A_ &w->io);	3081	ev_io_start (EV_A_ &w->io);
2186		3082
		3083	ev_prepare_init (&w->prepare, embed_prepare_cb);
		3084	ev_set_priority (&w->prepare, EV_MINPRI);
		3085	ev_prepare_start (EV_A_ &w->prepare);
		3086
		3087	ev_fork_init (&w->fork, embed_fork_cb);
		3088	ev_fork_start (EV_A_ &w->fork);
		3089
		3090	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		3091
2187	ev_start (EV_A_ (W)w, 1);	3092	ev_start (EV_A_ (W)w, 1);
		3093
		3094	EV_FREQUENT_CHECK;
2188	}	3095	}
2189		3096
2190	void	3097	void
2191	ev_embed_stop (EV_P_ ev_embed *w)	3098	ev_embed_stop (EV_P_ ev_embed *w)
2192	{	3099	{
2193	clear_pending (EV_A_ (W)w);	3100	clear_pending (EV_A_ (W)w);
2194	if (expect_false (!ev_is_active (w)))	3101	if (expect_false (!ev_is_active (w)))
2195	return;	3102	return;
2196		3103
		3104	EV_FREQUENT_CHECK;
		3105
2197	ev_io_stop (EV_A_ &w->io);	3106	ev_io_stop (EV_A_ &w->io);
		3107	ev_prepare_stop (EV_A_ &w->prepare);
		3108	ev_fork_stop (EV_A_ &w->fork);
2198		3109
2199	ev_stop (EV_A_ (W)w);	3110	EV_FREQUENT_CHECK;
2200	}	3111	}
2201	#endif	3112	#endif
2202		3113
2203	#if EV_FORK_ENABLE	3114	#if EV_FORK_ENABLE
2204	void	3115	void
2205	ev_fork_start (EV_P_ ev_fork *w)	3116	ev_fork_start (EV_P_ ev_fork *w)
2206	{	3117	{
2207	if (expect_false (ev_is_active (w)))	3118	if (expect_false (ev_is_active (w)))
2208	return;	3119	return;
		3120
		3121	EV_FREQUENT_CHECK;
2209		3122
2210	ev_start (EV_A_ (W)w, ++forkcnt);	3123	ev_start (EV_A_ (W)w, ++forkcnt);
2211	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3124	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2212	forks [forkcnt - 1] = w;	3125	forks [forkcnt - 1] = w;
		3126
		3127	EV_FREQUENT_CHECK;
2213	}	3128	}
2214		3129
2215	void	3130	void
2216	ev_fork_stop (EV_P_ ev_fork *w)	3131	ev_fork_stop (EV_P_ ev_fork *w)
2217	{	3132	{
2218	clear_pending (EV_A_ (W)w);	3133	clear_pending (EV_A_ (W)w);
2219	if (expect_false (!ev_is_active (w)))	3134	if (expect_false (!ev_is_active (w)))
2220	return;	3135	return;
2221		3136
		3137	EV_FREQUENT_CHECK;
		3138
2222	{	3139	{
2223	int active = ((W)w)->active;	3140	int active = ev_active (w);
		3141
2224	forks [active - 1] = forks [--forkcnt];	3142	forks [active - 1] = forks [--forkcnt];
2225	((W)forks [active - 1])->active = active;	3143	ev_active (forks [active - 1]) = active;
2226	}	3144	}
2227		3145
2228	ev_stop (EV_A_ (W)w);	3146	ev_stop (EV_A_ (W)w);
		3147
		3148	EV_FREQUENT_CHECK;
		3149	}
		3150	#endif
		3151
		3152	#if EV_ASYNC_ENABLE
		3153	void
		3154	ev_async_start (EV_P_ ev_async *w)
		3155	{
		3156	if (expect_false (ev_is_active (w)))
		3157	return;
		3158
		3159	evpipe_init (EV_A);
		3160
		3161	EV_FREQUENT_CHECK;
		3162
		3163	ev_start (EV_A_ (W)w, ++asynccnt);
		3164	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		3165	asyncs [asynccnt - 1] = w;
		3166
		3167	EV_FREQUENT_CHECK;
		3168	}
		3169
		3170	void
		3171	ev_async_stop (EV_P_ ev_async *w)
		3172	{
		3173	clear_pending (EV_A_ (W)w);
		3174	if (expect_false (!ev_is_active (w)))
		3175	return;
		3176
		3177	EV_FREQUENT_CHECK;
		3178
		3179	{
		3180	int active = ev_active (w);
		3181
		3182	asyncs [active - 1] = asyncs [--asynccnt];
		3183	ev_active (asyncs [active - 1]) = active;
		3184	}
		3185
		3186	ev_stop (EV_A_ (W)w);
		3187
		3188	EV_FREQUENT_CHECK;
		3189	}
		3190
		3191	void
		3192	ev_async_send (EV_P_ ev_async *w)
		3193	{
		3194	w->sent = 1;
		3195	evpipe_write (EV_A_ &gotasync);
2229	}	3196	}
2230	#endif	3197	#endif
2231		3198
2232	/*****************************************************************************/	3199	/*****************************************************************************/
2233		3200
…		…
2243	once_cb (EV_P_ struct ev_once *once, int revents)	3210	once_cb (EV_P_ struct ev_once *once, int revents)
2244	{	3211	{
2245	void (*cb)(int revents, void *arg) = once->cb;	3212	void (*cb)(int revents, void *arg) = once->cb;
2246	void *arg = once->arg;	3213	void *arg = once->arg;
2247		3214
2248	ev_io_stop (EV_A_ &once->io);	3215	ev_io_stop (EV_A_ &once->io);
2249	ev_timer_stop (EV_A_ &once->to);	3216	ev_timer_stop (EV_A_ &once->to);
2250	ev_free (once);	3217	ev_free (once);
2251		3218
2252	cb (revents, arg);	3219	cb (revents, arg);
2253	}	3220	}
2254		3221
2255	static void	3222	static void
2256	once_cb_io (EV_P_ ev_io *w, int revents)	3223	once_cb_io (EV_P_ ev_io *w, int revents)
2257	{	3224	{
2258	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3225	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3226
		3227	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2259	}	3228	}
2260		3229
2261	static void	3230	static void
2262	once_cb_to (EV_P_ ev_timer *w, int revents)	3231	once_cb_to (EV_P_ ev_timer *w, int revents)
2263	{	3232	{
2264	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3233	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3234
		3235	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2265	}	3236	}
2266		3237
2267	void	3238	void
2268	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3239	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2269	{	3240	{
…		…
2291	ev_timer_set (&once->to, timeout, 0.);	3262	ev_timer_set (&once->to, timeout, 0.);
2292	ev_timer_start (EV_A_ &once->to);	3263	ev_timer_start (EV_A_ &once->to);
2293	}	3264	}
2294	}	3265	}
2295		3266
		3267	/*****************************************************************************/
		3268
		3269	#if EV_WALK_ENABLE
		3270	void
		3271	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3272	{
		3273	int i, j;
		3274	ev_watcher_list *wl, *wn;
		3275
		3276	if (types & (EV_IO | EV_EMBED))
		3277	for (i = 0; i < anfdmax; ++i)
		3278	for (wl = anfds [i].head; wl; )
		3279	{
		3280	wn = wl->next;
		3281
		3282	#if EV_EMBED_ENABLE
		3283	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3284	{
		3285	if (types & EV_EMBED)
		3286	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3287	}
		3288	else
		3289	#endif
		3290	#if EV_USE_INOTIFY
		3291	if (ev_cb ((ev_io *)wl) == infy_cb)
		3292	;
		3293	else
		3294	#endif
		3295	if ((ev_io *)wl != &pipe_w)
		3296	if (types & EV_IO)
		3297	cb (EV_A_ EV_IO, wl);
		3298
		3299	wl = wn;
		3300	}
		3301
		3302	if (types & (EV_TIMER | EV_STAT))
		3303	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3304	#if EV_STAT_ENABLE
		3305	/*TODO: timer is not always active*/
		3306	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3307	{
		3308	if (types & EV_STAT)
		3309	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3310	}
		3311	else
		3312	#endif
		3313	if (types & EV_TIMER)
		3314	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3315
		3316	#if EV_PERIODIC_ENABLE
		3317	if (types & EV_PERIODIC)
		3318	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3319	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3320	#endif
		3321
		3322	#if EV_IDLE_ENABLE
		3323	if (types & EV_IDLE)
		3324	for (j = NUMPRI; i--; )
		3325	for (i = idlecnt [j]; i--; )
		3326	cb (EV_A_ EV_IDLE, idles [j][i]);
		3327	#endif
		3328
		3329	#if EV_FORK_ENABLE
		3330	if (types & EV_FORK)
		3331	for (i = forkcnt; i--; )
		3332	if (ev_cb (forks [i]) != embed_fork_cb)
		3333	cb (EV_A_ EV_FORK, forks [i]);
		3334	#endif
		3335
		3336	#if EV_ASYNC_ENABLE
		3337	if (types & EV_ASYNC)
		3338	for (i = asynccnt; i--; )
		3339	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3340	#endif
		3341
		3342	if (types & EV_PREPARE)
		3343	for (i = preparecnt; i--; )
		3344	#if EV_EMBED_ENABLE
		3345	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3346	#endif
		3347	cb (EV_A_ EV_PREPARE, prepares [i]);
		3348
		3349	if (types & EV_CHECK)
		3350	for (i = checkcnt; i--; )
		3351	cb (EV_A_ EV_CHECK, checks [i]);
		3352
		3353	if (types & EV_SIGNAL)
		3354	for (i = 0; i < signalmax; ++i)
		3355	for (wl = signals [i].head; wl; )
		3356	{
		3357	wn = wl->next;
		3358	cb (EV_A_ EV_SIGNAL, wl);
		3359	wl = wn;
		3360	}
		3361
		3362	if (types & EV_CHILD)
		3363	for (i = EV_PID_HASHSIZE; i--; )
		3364	for (wl = childs [i]; wl; )
		3365	{
		3366	wn = wl->next;
		3367	cb (EV_A_ EV_CHILD, wl);
		3368	wl = wn;
		3369	}
		3370	/* EV_STAT 0x00001000 /* stat data changed */
		3371	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3372	}
		3373	#endif
		3374
		3375	#if EV_MULTIPLICITY
		3376	#include "ev_wrap.h"
		3377	#endif
		3378
2296	#ifdef __cplusplus	3379	#ifdef __cplusplus
2297	}	3380	}
2298	#endif	3381	#endif
2299		3382

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