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Comparing libev/ev.c (file contents):
Revision 1.109 by root, Mon Nov 12 05:53:55 2007 UTC vs.
Revision 1.245 by root, Wed May 21 00:26:01 2008 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 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
		46	# ifdef EV_CONFIG_H
		47	# include EV_CONFIG_H
		48	# else
37	# include "config.h"	49	# include "config.h"
		50	# endif
38		51
39	# if HAVE_CLOCK_GETTIME	52	# if HAVE_CLOCK_GETTIME
40	# ifndef EV_USE_MONOTONIC	53	# ifndef EV_USE_MONOTONIC
41	# define EV_USE_MONOTONIC 1	54	# define EV_USE_MONOTONIC 1
42	# endif	55	# endif
43	# ifndef EV_USE_REALTIME	56	# ifndef EV_USE_REALTIME
44	# define EV_USE_REALTIME 1	57	# define EV_USE_REALTIME 1
45	# endif	58	# endif
		59	# else
		60	# ifndef EV_USE_MONOTONIC
		61	# define EV_USE_MONOTONIC 0
		62	# endif
		63	# ifndef EV_USE_REALTIME
		64	# define EV_USE_REALTIME 0
		65	# endif
46	# endif	66	# endif
47		67
48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)	68	# ifndef EV_USE_NANOSLEEP
		69	# if HAVE_NANOSLEEP
49	# define EV_USE_SELECT 1	70	# define EV_USE_NANOSLEEP 1
		71	# else
		72	# define EV_USE_NANOSLEEP 0
		73	# endif
50	# endif	74	# endif
51		75
52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)	76	# ifndef EV_USE_SELECT
		77	# if HAVE_SELECT && HAVE_SYS_SELECT_H
53	# define EV_USE_POLL 1	78	# define EV_USE_SELECT 1
		79	# else
		80	# define EV_USE_SELECT 0
		81	# endif
54	# endif	82	# endif
55		83
56	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)	84	# ifndef EV_USE_POLL
		85	# if HAVE_POLL && HAVE_POLL_H
57	# define EV_USE_EPOLL 1	86	# define EV_USE_POLL 1
		87	# else
		88	# define EV_USE_POLL 0
		89	# endif
58	# endif	90	# endif
59		91
60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)	92	# ifndef EV_USE_EPOLL
		93	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
61	# define EV_USE_KQUEUE 1	94	# define EV_USE_EPOLL 1
		95	# else
		96	# define EV_USE_EPOLL 0
		97	# endif
62	# endif	98	# endif
		99
		100	# ifndef EV_USE_KQUEUE
		101	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		102	# define EV_USE_KQUEUE 1
		103	# else
		104	# define EV_USE_KQUEUE 0
		105	# endif
		106	# endif
		107
		108	# ifndef EV_USE_PORT
		109	# if HAVE_PORT_H && HAVE_PORT_CREATE
		110	# define EV_USE_PORT 1
		111	# else
		112	# define EV_USE_PORT 0
		113	# endif
		114	# endif
63		115
		116	# ifndef EV_USE_INOTIFY
		117	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		118	# define EV_USE_INOTIFY 1
		119	# else
		120	# define EV_USE_INOTIFY 0
		121	# endif
		122	# endif
		123
		124	# ifndef EV_USE_EVENTFD
		125	# if HAVE_EVENTFD
		126	# define EV_USE_EVENTFD 1
		127	# else
		128	# define EV_USE_EVENTFD 0
		129	# endif
		130	# endif
		131
64	#endif	132	#endif
65		133
66	#include <math.h>	134	#include <math.h>
67	#include <stdlib.h>	135	#include <stdlib.h>
68	#include <fcntl.h>	136	#include <fcntl.h>
…		…
75	#include <sys/types.h>	143	#include <sys/types.h>
76	#include <time.h>	144	#include <time.h>
77		145
78	#include <signal.h>	146	#include <signal.h>
79		147
		148	#ifdef EV_H
		149	# include EV_H
		150	#else
		151	# include "ev.h"
		152	#endif
		153
80	#ifndef _WIN32	154	#ifndef _WIN32
81	# include <unistd.h>
82	# include <sys/time.h>	155	# include <sys/time.h>
83	# include <sys/wait.h>	156	# include <sys/wait.h>
		157	# include <unistd.h>
84	#else	158	#else
85	# define WIN32_LEAN_AND_MEAN	159	# define WIN32_LEAN_AND_MEAN
86	# include <windows.h>	160	# include <windows.h>
87	# ifndef EV_SELECT_IS_WINSOCKET	161	# ifndef EV_SELECT_IS_WINSOCKET
88	# define EV_SELECT_IS_WINSOCKET 1	162	# define EV_SELECT_IS_WINSOCKET 1
89	# endif	163	# endif
90	#endif	164	#endif
91		165
92	/**/	166	/* this block tries to deduce configuration from header-defined symbols and defaults */
93		167
94	#ifndef EV_USE_MONOTONIC	168	#ifndef EV_USE_MONOTONIC
95	# define EV_USE_MONOTONIC 1	169	# define EV_USE_MONOTONIC 0
		170	#endif
		171
		172	#ifndef EV_USE_REALTIME
		173	# define EV_USE_REALTIME 0
		174	#endif
		175
		176	#ifndef EV_USE_NANOSLEEP
		177	# define EV_USE_NANOSLEEP 0
96	#endif	178	#endif
97		179
98	#ifndef EV_USE_SELECT	180	#ifndef EV_USE_SELECT
99	# define EV_USE_SELECT 1	181	# define EV_USE_SELECT 1
100	# define EV_SELECT_USE_FD_SET 1
101	#endif	182	#endif
102		183
103	#ifndef EV_USE_POLL	184	#ifndef EV_USE_POLL
104	# ifdef _WIN32	185	# ifdef _WIN32
105	# define EV_USE_POLL 0	186	# define EV_USE_POLL 0
…		…
107	# define EV_USE_POLL 1	188	# define EV_USE_POLL 1
108	# endif	189	# endif
109	#endif	190	#endif
110		191
111	#ifndef EV_USE_EPOLL	192	#ifndef EV_USE_EPOLL
		193	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		194	# define EV_USE_EPOLL 1
		195	# else
112	# define EV_USE_EPOLL 0	196	# define EV_USE_EPOLL 0
		197	# endif
113	#endif	198	#endif
114		199
115	#ifndef EV_USE_KQUEUE	200	#ifndef EV_USE_KQUEUE
116	# define EV_USE_KQUEUE 0	201	# define EV_USE_KQUEUE 0
117	#endif	202	#endif
118		203
119	#ifndef EV_USE_REALTIME	204	#ifndef EV_USE_PORT
		205	# define EV_USE_PORT 0
		206	#endif
		207
		208	#ifndef EV_USE_INOTIFY
		209	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
120	# define EV_USE_REALTIME 1	210	# define EV_USE_INOTIFY 1
		211	# else
		212	# define EV_USE_INOTIFY 0
121	#endif	213	# endif
		214	#endif
122		215
123	/**/	216	#ifndef EV_PID_HASHSIZE
124		217	# if EV_MINIMAL
125	/* darwin simply cannot be helped */	218	# define EV_PID_HASHSIZE 1
126	#ifdef __APPLE__	219	# else
127	# undef EV_USE_POLL	220	# define EV_PID_HASHSIZE 16
128	# undef EV_USE_KQUEUE
129	#endif	221	# endif
		222	#endif
		223
		224	#ifndef EV_INOTIFY_HASHSIZE
		225	# if EV_MINIMAL
		226	# define EV_INOTIFY_HASHSIZE 1
		227	# else
		228	# define EV_INOTIFY_HASHSIZE 16
		229	# endif
		230	#endif
		231
		232	#ifndef EV_USE_EVENTFD
		233	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		234	# define EV_USE_EVENTFD 1
		235	# else
		236	# define EV_USE_EVENTFD 0
		237	# endif
		238	#endif
		239
		240	#ifndef EV_USE_4HEAP
		241	# define EV_USE_4HEAP !EV_MINIMAL
		242	#endif
		243
		244	#ifndef EV_HEAP_CACHE_AT
		245	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		246	#endif
		247
		248	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
130		249
131	#ifndef CLOCK_MONOTONIC	250	#ifndef CLOCK_MONOTONIC
132	# undef EV_USE_MONOTONIC	251	# undef EV_USE_MONOTONIC
133	# define EV_USE_MONOTONIC 0	252	# define EV_USE_MONOTONIC 0
134	#endif	253	#endif
…		…
136	#ifndef CLOCK_REALTIME	255	#ifndef CLOCK_REALTIME
137	# undef EV_USE_REALTIME	256	# undef EV_USE_REALTIME
138	# define EV_USE_REALTIME 0	257	# define EV_USE_REALTIME 0
139	#endif	258	#endif
140		259
		260	#if !EV_STAT_ENABLE
		261	# undef EV_USE_INOTIFY
		262	# define EV_USE_INOTIFY 0
		263	#endif
		264
		265	#if !EV_USE_NANOSLEEP
		266	# ifndef _WIN32
		267	# include <sys/select.h>
		268	# endif
		269	#endif
		270
		271	#if EV_USE_INOTIFY
		272	# include <sys/inotify.h>
		273	#endif
		274
141	#if EV_SELECT_IS_WINSOCKET	275	#if EV_SELECT_IS_WINSOCKET
142	# include <winsock.h>	276	# include <winsock.h>
143	#endif	277	#endif
144		278
		279	#if EV_USE_EVENTFD
		280	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		281	# include <stdint.h>
		282	# ifdef __cplusplus
		283	extern "C" {
		284	# endif
		285	int eventfd (unsigned int initval, int flags);
		286	# ifdef __cplusplus
		287	}
		288	# endif
		289	#endif
		290
145	/**/	291	/**/
146		292
		293	/*
		294	* This is used to avoid floating point rounding problems.
		295	* It is added to ev_rt_now when scheduling periodics
		296	* to ensure progress, time-wise, even when rounding
		297	* errors are against us.
		298	* This value is good at least till the year 4000.
		299	* Better solutions welcome.
		300	*/
		301	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
		302
147	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	303	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
148	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	304	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
149	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
150	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	305	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
151		306
152	#ifdef EV_H
153	# include EV_H
154	#else
155	# include "ev.h"
156	#endif
157
158	#if __GNUC__ >= 3	307	#if __GNUC__ >= 4
159	# define expect(expr,value) __builtin_expect ((expr),(value))	308	# define expect(expr,value) __builtin_expect ((expr),(value))
160	# define inline inline	309	# define noinline __attribute__ ((noinline))
161	#else	310	#else
162	# define expect(expr,value) (expr)	311	# define expect(expr,value) (expr)
163	# define inline static	312	# define noinline
		313	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
		314	# define inline
		315	# endif
164	#endif	316	#endif
165		317
166	#define expect_false(expr) expect ((expr) != 0, 0)	318	#define expect_false(expr) expect ((expr) != 0, 0)
167	#define expect_true(expr) expect ((expr) != 0, 1)	319	#define expect_true(expr) expect ((expr) != 0, 1)
		320	#define inline_size static inline
		321
		322	#if EV_MINIMAL
		323	# define inline_speed static noinline
		324	#else
		325	# define inline_speed static inline
		326	#endif
168		327
169	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	328	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
170	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	329	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
171		330
172	#define EMPTY /* required for microsofts broken pseudo-c compiler */	331	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		332	#define EMPTY2(a,b) /* used to suppress some warnings */
173		333
174	typedef struct ev_watcher *W;	334	typedef ev_watcher *W;
175	typedef struct ev_watcher_list *WL;	335	typedef ev_watcher_list *WL;
176	typedef struct ev_watcher_time *WT;	336	typedef ev_watcher_time *WT;
177		337
		338	#define ev_active(w) ((W)(w))->active
		339	#define ev_at(w) ((WT)(w))->at
		340
		341	#if EV_USE_MONOTONIC
		342	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		343	/* giving it a reasonably high chance of working on typical architetcures */
178	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	344	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		345	#endif
179		346
180	#ifdef _WIN32	347	#ifdef _WIN32
181	# include "ev_win32.c"	348	# include "ev_win32.c"
182	#endif	349	#endif
183		350
184	/*****************************************************************************/	351	/*****************************************************************************/
185		352
186	static void (*syserr_cb)(const char *msg);	353	static void (*syserr_cb)(const char *msg);
187		354
		355	void
188	void ev_set_syserr_cb (void (*cb)(const char *msg))	356	ev_set_syserr_cb (void (*cb)(const char *msg))
189	{	357	{
190	syserr_cb = cb;	358	syserr_cb = cb;
191	}	359	}
192		360
193	static void	361	static void noinline
194	syserr (const char *msg)	362	syserr (const char *msg)
195	{	363	{
196	if (!msg)	364	if (!msg)
197	msg = "(libev) system error";	365	msg = "(libev) system error";
198		366
…		…
203	perror (msg);	371	perror (msg);
204	abort ();	372	abort ();
205	}	373	}
206	}	374	}
207		375
		376	static void *
		377	ev_realloc_emul (void *ptr, long size)
		378	{
		379	/* some systems, notably openbsd and darwin, fail to properly
		380	* implement realloc (x, 0) (as required by both ansi c-98 and
		381	* the single unix specification, so work around them here.
		382	*/
		383
		384	if (size)
		385	return realloc (ptr, size);
		386
		387	free (ptr);
		388	return 0;
		389	}
		390
208	static void *(*alloc)(void *ptr, long size);	391	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
209		392
		393	void
210	void ev_set_allocator (void *(*cb)(void *ptr, long size))	394	ev_set_allocator (void *(*cb)(void *ptr, long size))
211	{	395	{
212	alloc = cb;	396	alloc = cb;
213	}	397	}
214		398
215	static void *	399	inline_speed void *
216	ev_realloc (void *ptr, long size)	400	ev_realloc (void *ptr, long size)
217	{	401	{
218	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	402	ptr = alloc (ptr, size);
219		403
220	if (!ptr && size)	404	if (!ptr && size)
221	{	405	{
222	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	406	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
223	abort ();	407	abort ();
…		…
244	typedef struct	428	typedef struct
245	{	429	{
246	W w;	430	W w;
247	int events;	431	int events;
248	} ANPENDING;	432	} ANPENDING;
		433
		434	#if EV_USE_INOTIFY
		435	/* hash table entry per inotify-id */
		436	typedef struct
		437	{
		438	WL head;
		439	} ANFS;
		440	#endif
		441
		442	/* Heap Entry */
		443	#if EV_HEAP_CACHE_AT
		444	typedef struct {
		445	ev_tstamp at;
		446	WT w;
		447	} ANHE;
		448
		449	#define ANHE_w(he) (he).w /* access watcher, read-write */
		450	#define ANHE_at(he) (he).at /* access cached at, read-only */
		451	#define ANHE_at_set(he) (he).at = (he).w->at /* update at from watcher */
		452	#else
		453	typedef WT ANHE;
		454
		455	#define ANHE_w(he) (he)
		456	#define ANHE_at(he) (he)->at
		457	#define ANHE_at_set(he)
		458	#endif
249		459
250	#if EV_MULTIPLICITY	460	#if EV_MULTIPLICITY
251		461
252	struct ev_loop	462	struct ev_loop
253	{	463	{
…		…
257	#include "ev_vars.h"	467	#include "ev_vars.h"
258	#undef VAR	468	#undef VAR
259	};	469	};
260	#include "ev_wrap.h"	470	#include "ev_wrap.h"
261		471
262	struct ev_loop default_loop_struct;	472	static struct ev_loop default_loop_struct;
263	static struct ev_loop *default_loop;	473	struct ev_loop *ev_default_loop_ptr;
264		474
265	#else	475	#else
266		476
267	ev_tstamp ev_rt_now;	477	ev_tstamp ev_rt_now;
268	#define VAR(name,decl) static decl;	478	#define VAR(name,decl) static decl;
269	#include "ev_vars.h"	479	#include "ev_vars.h"
270	#undef VAR	480	#undef VAR
271		481
272	static int default_loop;	482	static int ev_default_loop_ptr;
273		483
274	#endif	484	#endif
275		485
276	/*****************************************************************************/	486	/*****************************************************************************/
277		487
…		…
287	gettimeofday (&tv, 0);	497	gettimeofday (&tv, 0);
288	return tv.tv_sec + tv.tv_usec * 1e-6;	498	return tv.tv_sec + tv.tv_usec * 1e-6;
289	#endif	499	#endif
290	}	500	}
291		501
292	inline ev_tstamp	502	ev_tstamp inline_size
293	get_clock (void)	503	get_clock (void)
294	{	504	{
295	#if EV_USE_MONOTONIC	505	#if EV_USE_MONOTONIC
296	if (expect_true (have_monotonic))	506	if (expect_true (have_monotonic))
297	{	507	{
…		…
310	{	520	{
311	return ev_rt_now;	521	return ev_rt_now;
312	}	522	}
313	#endif	523	#endif
314		524
315	#define array_roundsize(type,n) (((n) | 4) & ~3)	525	void
		526	ev_sleep (ev_tstamp delay)
		527	{
		528	if (delay > 0.)
		529	{
		530	#if EV_USE_NANOSLEEP
		531	struct timespec ts;
		532
		533	ts.tv_sec = (time_t)delay;
		534	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		535
		536	nanosleep (&ts, 0);
		537	#elif defined(_WIN32)
		538	Sleep ((unsigned long)(delay * 1e3));
		539	#else
		540	struct timeval tv;
		541
		542	tv.tv_sec = (time_t)delay;
		543	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		544
		545	select (0, 0, 0, 0, &tv);
		546	#endif
		547	}
		548	}
		549
		550	/*****************************************************************************/
		551
		552	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		553
		554	int inline_size
		555	array_nextsize (int elem, int cur, int cnt)
		556	{
		557	int ncur = cur + 1;
		558
		559	do
		560	ncur <<= 1;
		561	while (cnt > ncur);
		562
		563	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
		564	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
		565	{
		566	ncur *= elem;
		567	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
		568	ncur = ncur - sizeof (void *) * 4;
		569	ncur /= elem;
		570	}
		571
		572	return ncur;
		573	}
		574
		575	static noinline void *
		576	array_realloc (int elem, void *base, int *cur, int cnt)
		577	{
		578	*cur = array_nextsize (elem, *cur, cnt);
		579	return ev_realloc (base, elem * *cur);
		580	}
316		581
317	#define array_needsize(type,base,cur,cnt,init) \	582	#define array_needsize(type,base,cur,cnt,init) \
318	if (expect_false ((cnt) > cur)) \	583	if (expect_false ((cnt) > (cur))) \
319	{ \	584	{ \
320	int newcnt = cur; \	585	int ocur_ = (cur); \
321	do \	586	(base) = (type *)array_realloc \
322	{ \	587	(sizeof (type), (base), &(cur), (cnt)); \
323	newcnt = array_roundsize (type, newcnt << 1); \	588	init ((base) + (ocur_), (cur) - ocur_); \
324	} \
325	while ((cnt) > newcnt); \
326	\
327	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
328	init (base + cur, newcnt - cur); \
329	cur = newcnt; \
330	}	589	}
331		590
		591	#if 0
332	#define array_slim(type,stem) \	592	#define array_slim(type,stem) \
333	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	593	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
334	{ \	594	{ \
335	stem ## max = array_roundsize (stem ## cnt >> 1); \	595	stem ## max = array_roundsize (stem ## cnt >> 1); \
336	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	596	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
337	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	597	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
338	}	598	}
		599	#endif
339		600
340	#define array_free(stem, idx) \	601	#define array_free(stem, idx) \
341	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	602	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
342		603
343	/*****************************************************************************/	604	/*****************************************************************************/
344		605
345	static void	606	void noinline
		607	ev_feed_event (EV_P_ void *w, int revents)
		608	{
		609	W w_ = (W)w;
		610	int pri = ABSPRI (w_);
		611
		612	if (expect_false (w_->pending))
		613	pendings [pri][w_->pending - 1].events |= revents;
		614	else
		615	{
		616	w_->pending = ++pendingcnt [pri];
		617	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		618	pendings [pri][w_->pending - 1].w = w_;
		619	pendings [pri][w_->pending - 1].events = revents;
		620	}
		621	}
		622
		623	void inline_speed
		624	queue_events (EV_P_ W *events, int eventcnt, int type)
		625	{
		626	int i;
		627
		628	for (i = 0; i < eventcnt; ++i)
		629	ev_feed_event (EV_A_ events [i], type);
		630	}
		631
		632	/*****************************************************************************/
		633
		634	void inline_size
346	anfds_init (ANFD *base, int count)	635	anfds_init (ANFD *base, int count)
347	{	636	{
348	while (count--)	637	while (count--)
349	{	638	{
350	base->head = 0;	639	base->head = 0;
…		…
353		642
354	++base;	643	++base;
355	}	644	}
356	}	645	}
357		646
358	void	647	void inline_speed
359	ev_feed_event (EV_P_ void *w, int revents)
360	{
361	W w_ = (W)w;
362
363	if (w_->pending)
364	{
365	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
366	return;
367	}
368
369	w_->pending = ++pendingcnt [ABSPRI (w_)];
370	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
371	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
372	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
373	}
374
375	static void
376	queue_events (EV_P_ W *events, int eventcnt, int type)
377	{
378	int i;
379
380	for (i = 0; i < eventcnt; ++i)
381	ev_feed_event (EV_A_ events [i], type);
382	}
383
384	inline void
385	fd_event (EV_P_ int fd, int revents)	648	fd_event (EV_P_ int fd, int revents)
386	{	649	{
387	ANFD *anfd = anfds + fd;	650	ANFD *anfd = anfds + fd;
388	struct ev_io *w;	651	ev_io *w;
389		652
390	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	653	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
391	{	654	{
392	int ev = w->events & revents;	655	int ev = w->events & revents;
393		656
394	if (ev)	657	if (ev)
395	ev_feed_event (EV_A_ (W)w, ev);	658	ev_feed_event (EV_A_ (W)w, ev);
…		…
397	}	660	}
398		661
399	void	662	void
400	ev_feed_fd_event (EV_P_ int fd, int revents)	663	ev_feed_fd_event (EV_P_ int fd, int revents)
401	{	664	{
		665	if (fd >= 0 && fd < anfdmax)
402	fd_event (EV_A_ fd, revents);	666	fd_event (EV_A_ fd, revents);
403	}	667	}
404		668
405	/*****************************************************************************/	669	void inline_size
406
407	static void
408	fd_reify (EV_P)	670	fd_reify (EV_P)
409	{	671	{
410	int i;	672	int i;
411		673
412	for (i = 0; i < fdchangecnt; ++i)	674	for (i = 0; i < fdchangecnt; ++i)
413	{	675	{
414	int fd = fdchanges [i];	676	int fd = fdchanges [i];
415	ANFD *anfd = anfds + fd;	677	ANFD *anfd = anfds + fd;
416	struct ev_io *w;	678	ev_io *w;
417		679
418	int events = 0;	680	unsigned char events = 0;
419		681
420	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	682	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
421	events |= w->events;	683	events |= (unsigned char)w->events;
422		684
423	#if EV_SELECT_IS_WINSOCKET	685	#if EV_SELECT_IS_WINSOCKET
424	if (events)	686	if (events)
425	{	687	{
426	unsigned long argp;	688	unsigned long argp;
		689	#ifdef EV_FD_TO_WIN32_HANDLE
		690	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		691	#else
427	anfd->handle = _get_osfhandle (fd);	692	anfd->handle = _get_osfhandle (fd);
		693	#endif
428	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	694	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
429	}	695	}
430	#endif	696	#endif
431		697
		698	{
		699	unsigned char o_events = anfd->events;
		700	unsigned char o_reify = anfd->reify;
		701
432	anfd->reify = 0;	702	anfd->reify = 0;
433
434	method_modify (EV_A_ fd, anfd->events, events);
435	anfd->events = events;	703	anfd->events = events;
		704
		705	if (o_events != events || o_reify & EV_IOFDSET)
		706	backend_modify (EV_A_ fd, o_events, events);
		707	}
436	}	708	}
437		709
438	fdchangecnt = 0;	710	fdchangecnt = 0;
439	}	711	}
440		712
441	static void	713	void inline_size
442	fd_change (EV_P_ int fd)	714	fd_change (EV_P_ int fd, int flags)
443	{	715	{
444	if (anfds [fd].reify)	716	unsigned char reify = anfds [fd].reify;
445	return;
446
447	anfds [fd].reify = 1;	717	anfds [fd].reify |= flags;
448		718
		719	if (expect_true (!reify))
		720	{
449	++fdchangecnt;	721	++fdchangecnt;
450	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	722	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
451	fdchanges [fdchangecnt - 1] = fd;	723	fdchanges [fdchangecnt - 1] = fd;
		724	}
452	}	725	}
453		726
454	static void	727	void inline_speed
455	fd_kill (EV_P_ int fd)	728	fd_kill (EV_P_ int fd)
456	{	729	{
457	struct ev_io *w;	730	ev_io *w;
458		731
459	while ((w = (struct ev_io *)anfds [fd].head))	732	while ((w = (ev_io *)anfds [fd].head))
460	{	733	{
461	ev_io_stop (EV_A_ w);	734	ev_io_stop (EV_A_ w);
462	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	735	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
463	}	736	}
464	}	737	}
465		738
466	static int	739	int inline_size
467	fd_valid (int fd)	740	fd_valid (int fd)
468	{	741	{
469	#ifdef _WIN32	742	#ifdef _WIN32
470	return _get_osfhandle (fd) != -1;	743	return _get_osfhandle (fd) != -1;
471	#else	744	#else
472	return fcntl (fd, F_GETFD) != -1;	745	return fcntl (fd, F_GETFD) != -1;
473	#endif	746	#endif
474	}	747	}
475		748
476	/* called on EBADF to verify fds */	749	/* called on EBADF to verify fds */
477	static void	750	static void noinline
478	fd_ebadf (EV_P)	751	fd_ebadf (EV_P)
479	{	752	{
480	int fd;	753	int fd;
481		754
482	for (fd = 0; fd < anfdmax; ++fd)	755	for (fd = 0; fd < anfdmax; ++fd)
…		…
484	if (!fd_valid (fd) == -1 && errno == EBADF)	757	if (!fd_valid (fd) == -1 && errno == EBADF)
485	fd_kill (EV_A_ fd);	758	fd_kill (EV_A_ fd);
486	}	759	}
487		760
488	/* called on ENOMEM in select/poll to kill some fds and retry */	761	/* called on ENOMEM in select/poll to kill some fds and retry */
489	static void	762	static void noinline
490	fd_enomem (EV_P)	763	fd_enomem (EV_P)
491	{	764	{
492	int fd;	765	int fd;
493		766
494	for (fd = anfdmax; fd--; )	767	for (fd = anfdmax; fd--; )
…		…
497	fd_kill (EV_A_ fd);	770	fd_kill (EV_A_ fd);
498	return;	771	return;
499	}	772	}
500	}	773	}
501		774
502	/* usually called after fork if method needs to re-arm all fds from scratch */	775	/* usually called after fork if backend needs to re-arm all fds from scratch */
503	static void	776	static void noinline
504	fd_rearm_all (EV_P)	777	fd_rearm_all (EV_P)
505	{	778	{
506	int fd;	779	int fd;
507		780
508	/* this should be highly optimised to not do anything but set a flag */
509	for (fd = 0; fd < anfdmax; ++fd)	781	for (fd = 0; fd < anfdmax; ++fd)
510	if (anfds [fd].events)	782	if (anfds [fd].events)
511	{	783	{
512	anfds [fd].events = 0;	784	anfds [fd].events = 0;
513	fd_change (EV_A_ fd);	785	fd_change (EV_A_ fd, EV_IOFDSET | 1);
514	}	786	}
515	}	787	}
516		788
517	/*****************************************************************************/	789	/*****************************************************************************/
518		790
519	static void	791	/*
		792	* the heap functions want a real array index. array index 0 uis guaranteed to not
		793	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		794	* the branching factor of the d-tree.
		795	*/
		796
		797	/*
		798	* at the moment we allow libev the luxury of two heaps,
		799	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		800	* which is more cache-efficient.
		801	* the difference is about 5% with 50000+ watchers.
		802	*/
		803	#if EV_USE_4HEAP
		804
		805	#define DHEAP 4
		806	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		807
		808	/* towards the root */
		809	void inline_speed
520	upheap (WT *heap, int k)	810	upheap (ANHE *heap, int k)
521	{	811	{
522	WT w = heap [k];	812	ANHE he = heap [k];
523		813
524	while (k && heap [k >> 1]->at > w->at)	814	for (;;)
525	{
526	heap [k] = heap [k >> 1];
527	((W)heap [k])->active = k + 1;
528	k >>= 1;
529	}	815	{
		816	int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
530		817
531	heap [k] = w;	818	if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
532	((W)heap [k])->active = k + 1;
533
534	}
535
536	static void
537	downheap (WT *heap, int N, int k)
538	{
539	WT w = heap [k];
540
541	while (k < (N >> 1))
542	{
543	int j = k << 1;
544
545	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
546	++j;
547
548	if (w->at <= heap [j]->at)
549	break;	819	break;
550		820
551	heap [k] = heap [j];	821	heap [k] = heap [p];
552	((W)heap [k])->active = k + 1;	822	ev_active (ANHE_w (heap [k])) = k;
553	k = j;	823	k = p;
554	}	824	}
555		825
		826	ev_active (ANHE_w (he)) = k;
556	heap [k] = w;	827	heap [k] = he;
557	((W)heap [k])->active = k + 1;
558	}	828	}
559		829
560	inline void	830	/* away from the root */
		831	void inline_speed
		832	downheap (ANHE *heap, int N, int k)
		833	{
		834	ANHE he = heap [k];
		835	ANHE *E = heap + N + HEAP0;
		836
		837	for (;;)
		838	{
		839	ev_tstamp minat;
		840	ANHE *minpos;
		841	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0;
		842
		843	// find minimum child
		844	if (expect_true (pos + DHEAP - 1 < E))
		845	{
		846	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		847	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		848	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		849	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		850	}
		851	else if (pos < E)
		852	{
		853	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		854	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		855	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		856	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		857	}
		858	else
		859	break;
		860
		861	if (ANHE_at (he) <= minat)
		862	break;
		863
		864	ev_active (ANHE_w (*minpos)) = k;
		865	heap [k] = *minpos;
		866
		867	k = minpos - heap;
		868	}
		869
		870	ev_active (ANHE_w (he)) = k;
		871	heap [k] = he;
		872	}
		873
		874	#else // 4HEAP
		875
		876	#define HEAP0 1
		877
		878	/* towards the root */
		879	void inline_speed
		880	upheap (ANHE *heap, int k)
		881	{
		882	ANHE he = heap [k];
		883
		884	for (;;)
		885	{
		886	int p = k >> 1;
		887
		888	/* maybe we could use a dummy element at heap [0]? */
		889	if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
		890	break;
		891
		892	heap [k] = heap [p];
		893	ev_active (ANHE_w (heap [k])) = k;
		894	k = p;
		895	}
		896
		897	heap [k] = he;
		898	ev_active (ANHE_w (heap [k])) = k;
		899	}
		900
		901	/* away from the root */
		902	void inline_speed
		903	downheap (ANHE *heap, int N, int k)
		904	{
		905	ANHE he = heap [k];
		906
		907	for (;;)
		908	{
		909	int c = k << 1;
		910
		911	if (c > N)
		912	break;
		913
		914	c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		915	? 1 : 0;
		916
		917	if (ANHE_at (he) <= ANHE_at (heap [c]))
		918	break;
		919
		920	heap [k] = heap [c];
		921	ev_active (ANHE_w (heap [k])) = k;
		922
		923	k = c;
		924	}
		925
		926	heap [k] = he;
		927	ev_active (ANHE_w (he)) = k;
		928	}
		929	#endif
		930
		931	void inline_size
561	adjustheap (WT *heap, int N, int k)	932	adjustheap (ANHE *heap, int N, int k)
562	{	933	{
563	upheap (heap, k);	934	upheap (heap, k);
564	downheap (heap, N, k);	935	downheap (heap, N, k);
565	}	936	}
566		937
567	/*****************************************************************************/	938	/*****************************************************************************/
568		939
569	typedef struct	940	typedef struct
570	{	941	{
571	WL head;	942	WL head;
572	sig_atomic_t volatile gotsig;	943	EV_ATOMIC_T gotsig;
573	} ANSIG;	944	} ANSIG;
574		945
575	static ANSIG *signals;	946	static ANSIG *signals;
576	static int signalmax;	947	static int signalmax;
577		948
578	static int sigpipe [2];	949	static EV_ATOMIC_T gotsig;
579	static sig_atomic_t volatile gotsig;
580	static struct ev_io sigev;
581		950
582	static void	951	void inline_size
583	signals_init (ANSIG *base, int count)	952	signals_init (ANSIG *base, int count)
584	{	953	{
585	while (count--)	954	while (count--)
586	{	955	{
587	base->head = 0;	956	base->head = 0;
…		…
589		958
590	++base;	959	++base;
591	}	960	}
592	}	961	}
593		962
594	static void	963	/*****************************************************************************/
595	sighandler (int signum)
596	{
597	#if _WIN32
598	signal (signum, sighandler);
599	#endif
600		964
601	signals [signum - 1].gotsig = 1;	965	void inline_speed
602
603	if (!gotsig)
604	{
605	int old_errno = errno;
606	gotsig = 1;
607	write (sigpipe [1], &signum, 1);
608	errno = old_errno;
609	}
610	}
611
612	void
613	ev_feed_signal_event (EV_P_ int signum)
614	{
615	WL w;
616
617	#if EV_MULTIPLICITY
618	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
619	#endif
620
621	--signum;
622
623	if (signum < 0 || signum >= signalmax)
624	return;
625
626	signals [signum].gotsig = 0;
627
628	for (w = signals [signum].head; w; w = w->next)
629	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
630	}
631
632	static void
633	sigcb (EV_P_ struct ev_io *iow, int revents)
634	{
635	int signum;
636
637	read (sigpipe [0], &revents, 1);
638	gotsig = 0;
639
640	for (signum = signalmax; signum--; )
641	if (signals [signum].gotsig)
642	ev_feed_signal_event (EV_A_ signum + 1);
643	}
644
645	inline void
646	fd_intern (int fd)	966	fd_intern (int fd)
647	{	967	{
648	#ifdef _WIN32	968	#ifdef _WIN32
649	int arg = 1;	969	int arg = 1;
650	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	970	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
652	fcntl (fd, F_SETFD, FD_CLOEXEC);	972	fcntl (fd, F_SETFD, FD_CLOEXEC);
653	fcntl (fd, F_SETFL, O_NONBLOCK);	973	fcntl (fd, F_SETFL, O_NONBLOCK);
654	#endif	974	#endif
655	}	975	}
656		976
		977	static void noinline
		978	evpipe_init (EV_P)
		979	{
		980	if (!ev_is_active (&pipeev))
		981	{
		982	#if EV_USE_EVENTFD
		983	if ((evfd = eventfd (0, 0)) >= 0)
		984	{
		985	evpipe [0] = -1;
		986	fd_intern (evfd);
		987	ev_io_set (&pipeev, evfd, EV_READ);
		988	}
		989	else
		990	#endif
		991	{
		992	while (pipe (evpipe))
		993	syserr ("(libev) error creating signal/async pipe");
		994
		995	fd_intern (evpipe [0]);
		996	fd_intern (evpipe [1]);
		997	ev_io_set (&pipeev, evpipe [0], EV_READ);
		998	}
		999
		1000	ev_io_start (EV_A_ &pipeev);
		1001	ev_unref (EV_A); /* watcher should not keep loop alive */
		1002	}
		1003	}
		1004
		1005	void inline_size
		1006	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		1007	{
		1008	if (!*flag)
		1009	{
		1010	int old_errno = errno; /* save errno because write might clobber it */
		1011
		1012	*flag = 1;
		1013
		1014	#if EV_USE_EVENTFD
		1015	if (evfd >= 0)
		1016	{
		1017	uint64_t counter = 1;
		1018	write (evfd, &counter, sizeof (uint64_t));
		1019	}
		1020	else
		1021	#endif
		1022	write (evpipe [1], &old_errno, 1);
		1023
		1024	errno = old_errno;
		1025	}
		1026	}
		1027
657	static void	1028	static void
658	siginit (EV_P)	1029	pipecb (EV_P_ ev_io *iow, int revents)
659	{	1030	{
660	fd_intern (sigpipe [0]);	1031	#if EV_USE_EVENTFD
661	fd_intern (sigpipe [1]);	1032	if (evfd >= 0)
		1033	{
		1034	uint64_t counter;
		1035	read (evfd, &counter, sizeof (uint64_t));
		1036	}
		1037	else
		1038	#endif
		1039	{
		1040	char dummy;
		1041	read (evpipe [0], &dummy, 1);
		1042	}
662		1043
663	ev_io_set (&sigev, sigpipe [0], EV_READ);	1044	if (gotsig && ev_is_default_loop (EV_A))
664	ev_io_start (EV_A_ &sigev);	1045	{
665	ev_unref (EV_A); /* child watcher should not keep loop alive */	1046	int signum;
		1047	gotsig = 0;
		1048
		1049	for (signum = signalmax; signum--; )
		1050	if (signals [signum].gotsig)
		1051	ev_feed_signal_event (EV_A_ signum + 1);
		1052	}
		1053
		1054	#if EV_ASYNC_ENABLE
		1055	if (gotasync)
		1056	{
		1057	int i;
		1058	gotasync = 0;
		1059
		1060	for (i = asynccnt; i--; )
		1061	if (asyncs [i]->sent)
		1062	{
		1063	asyncs [i]->sent = 0;
		1064	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		1065	}
		1066	}
		1067	#endif
666	}	1068	}
667		1069
668	/*****************************************************************************/	1070	/*****************************************************************************/
669		1071
670	static struct ev_child *childs [PID_HASHSIZE];	1072	static void
		1073	ev_sighandler (int signum)
		1074	{
		1075	#if EV_MULTIPLICITY
		1076	struct ev_loop *loop = &default_loop_struct;
		1077	#endif
		1078
		1079	#if _WIN32
		1080	signal (signum, ev_sighandler);
		1081	#endif
		1082
		1083	signals [signum - 1].gotsig = 1;
		1084	evpipe_write (EV_A_ &gotsig);
		1085	}
		1086
		1087	void noinline
		1088	ev_feed_signal_event (EV_P_ int signum)
		1089	{
		1090	WL w;
		1091
		1092	#if EV_MULTIPLICITY
		1093	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		1094	#endif
		1095
		1096	--signum;
		1097
		1098	if (signum < 0 || signum >= signalmax)
		1099	return;
		1100
		1101	signals [signum].gotsig = 0;
		1102
		1103	for (w = signals [signum].head; w; w = w->next)
		1104	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		1105	}
		1106
		1107	/*****************************************************************************/
		1108
		1109	static WL childs [EV_PID_HASHSIZE];
671		1110
672	#ifndef _WIN32	1111	#ifndef _WIN32
673		1112
674	static struct ev_signal childev;	1113	static ev_signal childev;
		1114
		1115	#ifndef WIFCONTINUED
		1116	# define WIFCONTINUED(status) 0
		1117	#endif
		1118
		1119	void inline_speed
		1120	child_reap (EV_P_ int chain, int pid, int status)
		1121	{
		1122	ev_child *w;
		1123	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
		1124
		1125	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1126	{
		1127	if ((w->pid == pid || !w->pid)
		1128	&& (!traced || (w->flags & 1)))
		1129	{
		1130	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
		1131	w->rpid = pid;
		1132	w->rstatus = status;
		1133	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		1134	}
		1135	}
		1136	}
675		1137
676	#ifndef WCONTINUED	1138	#ifndef WCONTINUED
677	# define WCONTINUED 0	1139	# define WCONTINUED 0
678	#endif	1140	#endif
679		1141
680	static void	1142	static void
681	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
682	{
683	struct ev_child *w;
684
685	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
686	if (w->pid == pid || !w->pid)
687	{
688	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
689	w->rpid = pid;
690	w->rstatus = status;
691	ev_feed_event (EV_A_ (W)w, EV_CHILD);
692	}
693	}
694
695	static void
696	childcb (EV_P_ struct ev_signal *sw, int revents)	1143	childcb (EV_P_ ev_signal *sw, int revents)
697	{	1144	{
698	int pid, status;	1145	int pid, status;
699		1146
		1147	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
700	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	1148	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
701	{	1149	if (!WCONTINUED
		1150	|| errno != EINVAL
		1151	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		1152	return;
		1153
702	/* make sure we are called again until all childs have been reaped */	1154	/* make sure we are called again until all children have been reaped */
		1155	/* we need to do it this way so that the callback gets called before we continue */
703	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1156	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
704		1157
705	child_reap (EV_A_ sw, pid, pid, status);	1158	child_reap (EV_A_ pid, pid, status);
		1159	if (EV_PID_HASHSIZE > 1)
706	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	1160	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
707	}
708	}	1161	}
709		1162
710	#endif	1163	#endif
711		1164
712	/*****************************************************************************/	1165	/*****************************************************************************/
713		1166
		1167	#if EV_USE_PORT
		1168	# include "ev_port.c"
		1169	#endif
714	#if EV_USE_KQUEUE	1170	#if EV_USE_KQUEUE
715	# include "ev_kqueue.c"	1171	# include "ev_kqueue.c"
716	#endif	1172	#endif
717	#if EV_USE_EPOLL	1173	#if EV_USE_EPOLL
718	# include "ev_epoll.c"	1174	# include "ev_epoll.c"
…		…
735	{	1191	{
736	return EV_VERSION_MINOR;	1192	return EV_VERSION_MINOR;
737	}	1193	}
738		1194
739	/* return true if we are running with elevated privileges and should ignore env variables */	1195	/* return true if we are running with elevated privileges and should ignore env variables */
740	static int	1196	int inline_size
741	enable_secure (void)	1197	enable_secure (void)
742	{	1198	{
743	#ifdef _WIN32	1199	#ifdef _WIN32
744	return 0;	1200	return 0;
745	#else	1201	#else
746	return getuid () != geteuid ()	1202	return getuid () != geteuid ()
747	|| getgid () != getegid ();	1203	|| getgid () != getegid ();
748	#endif	1204	#endif
749	}	1205	}
750		1206
751	int	1207	unsigned int
752	ev_method (EV_P)	1208	ev_supported_backends (void)
753	{	1209	{
754	return method;	1210	unsigned int flags = 0;
755	}
756		1211
757	static void	1212	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		1213	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		1214	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		1215	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		1216	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		1217
		1218	return flags;
		1219	}
		1220
		1221	unsigned int
		1222	ev_recommended_backends (void)
		1223	{
		1224	unsigned int flags = ev_supported_backends ();
		1225
		1226	#ifndef __NetBSD__
		1227	/* kqueue is borked on everything but netbsd apparently */
		1228	/* it usually doesn't work correctly on anything but sockets and pipes */
		1229	flags &= ~EVBACKEND_KQUEUE;
		1230	#endif
		1231	#ifdef __APPLE__
		1232	// flags &= ~EVBACKEND_KQUEUE; for documentation
		1233	flags &= ~EVBACKEND_POLL;
		1234	#endif
		1235
		1236	return flags;
		1237	}
		1238
		1239	unsigned int
		1240	ev_embeddable_backends (void)
		1241	{
		1242	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
		1243
		1244	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1245	/* please fix it and tell me how to detect the fix */
		1246	flags &= ~EVBACKEND_EPOLL;
		1247
		1248	return flags;
		1249	}
		1250
		1251	unsigned int
		1252	ev_backend (EV_P)
		1253	{
		1254	return backend;
		1255	}
		1256
		1257	unsigned int
		1258	ev_loop_count (EV_P)
		1259	{
		1260	return loop_count;
		1261	}
		1262
		1263	void
		1264	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1265	{
		1266	io_blocktime = interval;
		1267	}
		1268
		1269	void
		1270	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1271	{
		1272	timeout_blocktime = interval;
		1273	}
		1274
		1275	static void noinline
758	loop_init (EV_P_ unsigned int flags)	1276	loop_init (EV_P_ unsigned int flags)
759	{	1277	{
760	if (!method)	1278	if (!backend)
761	{	1279	{
762	#if EV_USE_MONOTONIC	1280	#if EV_USE_MONOTONIC
763	{	1281	{
764	struct timespec ts;	1282	struct timespec ts;
765	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1283	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
766	have_monotonic = 1;	1284	have_monotonic = 1;
767	}	1285	}
768	#endif	1286	#endif
769		1287
770	ev_rt_now = ev_time ();	1288	ev_rt_now = ev_time ();
771	mn_now = get_clock ();	1289	mn_now = get_clock ();
772	now_floor = mn_now;	1290	now_floor = mn_now;
773	rtmn_diff = ev_rt_now - mn_now;	1291	rtmn_diff = ev_rt_now - mn_now;
774		1292
775	if (!(flags & EVMETHOD_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))	1293	io_blocktime = 0.;
		1294	timeout_blocktime = 0.;
		1295	backend = 0;
		1296	backend_fd = -1;
		1297	gotasync = 0;
		1298	#if EV_USE_INOTIFY
		1299	fs_fd = -2;
		1300	#endif
		1301
		1302	/* pid check not overridable via env */
		1303	#ifndef _WIN32
		1304	if (flags & EVFLAG_FORKCHECK)
		1305	curpid = getpid ();
		1306	#endif
		1307
		1308	if (!(flags & EVFLAG_NOENV)
		1309	&& !enable_secure ()
		1310	&& getenv ("LIBEV_FLAGS"))
776	flags = atoi (getenv ("LIBEV_FLAGS"));	1311	flags = atoi (getenv ("LIBEV_FLAGS"));
777		1312
778	if (!(flags & 0x0000ffff))	1313	if (!(flags & 0x0000ffffU))
779	flags |= 0x0000ffff;	1314	flags |= ev_recommended_backends ();
780		1315
781	method = 0;	1316	#if EV_USE_PORT
		1317	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		1318	#endif
782	#if EV_USE_KQUEUE	1319	#if EV_USE_KQUEUE
783	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);	1320	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
784	#endif	1321	#endif
785	#if EV_USE_EPOLL	1322	#if EV_USE_EPOLL
786	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);	1323	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
787	#endif	1324	#endif
788	#if EV_USE_POLL	1325	#if EV_USE_POLL
789	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);	1326	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
790	#endif	1327	#endif
791	#if EV_USE_SELECT	1328	#if EV_USE_SELECT
792	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);	1329	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
793	#endif	1330	#endif
794		1331
795	ev_init (&sigev, sigcb);	1332	ev_init (&pipeev, pipecb);
796	ev_set_priority (&sigev, EV_MAXPRI);	1333	ev_set_priority (&pipeev, EV_MAXPRI);
797	}	1334	}
798	}	1335	}
799		1336
800	void	1337	static void noinline
801	loop_destroy (EV_P)	1338	loop_destroy (EV_P)
802	{	1339	{
803	int i;	1340	int i;
804		1341
		1342	if (ev_is_active (&pipeev))
		1343	{
		1344	ev_ref (EV_A); /* signal watcher */
		1345	ev_io_stop (EV_A_ &pipeev);
		1346
		1347	#if EV_USE_EVENTFD
		1348	if (evfd >= 0)
		1349	close (evfd);
		1350	#endif
		1351
		1352	if (evpipe [0] >= 0)
		1353	{
		1354	close (evpipe [0]);
		1355	close (evpipe [1]);
		1356	}
		1357	}
		1358
		1359	#if EV_USE_INOTIFY
		1360	if (fs_fd >= 0)
		1361	close (fs_fd);
		1362	#endif
		1363
		1364	if (backend_fd >= 0)
		1365	close (backend_fd);
		1366
		1367	#if EV_USE_PORT
		1368	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		1369	#endif
805	#if EV_USE_KQUEUE	1370	#if EV_USE_KQUEUE
806	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1371	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
807	#endif	1372	#endif
808	#if EV_USE_EPOLL	1373	#if EV_USE_EPOLL
809	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1374	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
810	#endif	1375	#endif
811	#if EV_USE_POLL	1376	#if EV_USE_POLL
812	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1377	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
813	#endif	1378	#endif
814	#if EV_USE_SELECT	1379	#if EV_USE_SELECT
815	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1380	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
816	#endif	1381	#endif
817		1382
818	for (i = NUMPRI; i--; )	1383	for (i = NUMPRI; i--; )
		1384	{
819	array_free (pending, [i]);	1385	array_free (pending, [i]);
		1386	#if EV_IDLE_ENABLE
		1387	array_free (idle, [i]);
		1388	#endif
		1389	}
		1390
		1391	ev_free (anfds); anfdmax = 0;
820		1392
821	/* have to use the microsoft-never-gets-it-right macro */	1393	/* have to use the microsoft-never-gets-it-right macro */
822	array_free (fdchange, EMPTY);	1394	array_free (fdchange, EMPTY);
823	array_free (timer, EMPTY);	1395	array_free (timer, EMPTY);
824	#if EV_PERIODICS	1396	#if EV_PERIODIC_ENABLE
825	array_free (periodic, EMPTY);	1397	array_free (periodic, EMPTY);
826	#endif	1398	#endif
		1399	#if EV_FORK_ENABLE
827	array_free (idle, EMPTY);	1400	array_free (fork, EMPTY);
		1401	#endif
828	array_free (prepare, EMPTY);	1402	array_free (prepare, EMPTY);
829	array_free (check, EMPTY);	1403	array_free (check, EMPTY);
		1404	#if EV_ASYNC_ENABLE
		1405	array_free (async, EMPTY);
		1406	#endif
830		1407
831	method = 0;	1408	backend = 0;
832	}	1409	}
833		1410
834	static void	1411	#if EV_USE_INOTIFY
		1412	void inline_size infy_fork (EV_P);
		1413	#endif
		1414
		1415	void inline_size
835	loop_fork (EV_P)	1416	loop_fork (EV_P)
836	{	1417	{
		1418	#if EV_USE_PORT
		1419	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1420	#endif
		1421	#if EV_USE_KQUEUE
		1422	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1423	#endif
837	#if EV_USE_EPOLL	1424	#if EV_USE_EPOLL
838	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1425	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
839	#endif	1426	#endif
840	#if EV_USE_KQUEUE	1427	#if EV_USE_INOTIFY
841	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1428	infy_fork (EV_A);
842	#endif	1429	#endif
843		1430
844	if (ev_is_active (&sigev))	1431	if (ev_is_active (&pipeev))
845	{	1432	{
846	/* default loop */	1433	/* this "locks" the handlers against writing to the pipe */
		1434	/* while we modify the fd vars */
		1435	gotsig = 1;
		1436	#if EV_ASYNC_ENABLE
		1437	gotasync = 1;
		1438	#endif
847		1439
848	ev_ref (EV_A);	1440	ev_ref (EV_A);
849	ev_io_stop (EV_A_ &sigev);	1441	ev_io_stop (EV_A_ &pipeev);
		1442
		1443	#if EV_USE_EVENTFD
		1444	if (evfd >= 0)
		1445	close (evfd);
		1446	#endif
		1447
		1448	if (evpipe [0] >= 0)
		1449	{
850	close (sigpipe [0]);	1450	close (evpipe [0]);
851	close (sigpipe [1]);	1451	close (evpipe [1]);
		1452	}
852		1453
853	while (pipe (sigpipe))
854	syserr ("(libev) error creating pipe");
855
856	siginit (EV_A);	1454	evpipe_init (EV_A);
		1455	/* now iterate over everything, in case we missed something */
		1456	pipecb (EV_A_ &pipeev, EV_READ);
857	}	1457	}
858		1458
859	postfork = 0;	1459	postfork = 0;
860	}	1460	}
861		1461
…		…
867		1467
868	memset (loop, 0, sizeof (struct ev_loop));	1468	memset (loop, 0, sizeof (struct ev_loop));
869		1469
870	loop_init (EV_A_ flags);	1470	loop_init (EV_A_ flags);
871		1471
872	if (ev_method (EV_A))	1472	if (ev_backend (EV_A))
873	return loop;	1473	return loop;
874		1474
875	return 0;	1475	return 0;
876	}	1476	}
877		1477
…		…
883	}	1483	}
884		1484
885	void	1485	void
886	ev_loop_fork (EV_P)	1486	ev_loop_fork (EV_P)
887	{	1487	{
888	postfork = 1;	1488	postfork = 1; /* must be in line with ev_default_fork */
889	}	1489	}
890
891	#endif	1490	#endif
892		1491
893	#if EV_MULTIPLICITY	1492	#if EV_MULTIPLICITY
894	struct ev_loop *	1493	struct ev_loop *
		1494	ev_default_loop_init (unsigned int flags)
895	#else	1495	#else
896	int	1496	int
897	#endif
898	ev_default_loop (unsigned int flags)	1497	ev_default_loop (unsigned int flags)
		1498	#endif
899	{	1499	{
900	if (sigpipe [0] == sigpipe [1])
901	if (pipe (sigpipe))
902	return 0;
903
904	if (!default_loop)	1500	if (!ev_default_loop_ptr)
905	{	1501	{
906	#if EV_MULTIPLICITY	1502	#if EV_MULTIPLICITY
907	struct ev_loop *loop = default_loop = &default_loop_struct;	1503	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
908	#else	1504	#else
909	default_loop = 1;	1505	ev_default_loop_ptr = 1;
910	#endif	1506	#endif
911		1507
912	loop_init (EV_A_ methods);	1508	loop_init (EV_A_ flags);
913		1509
914	if (ev_method (EV_A))	1510	if (ev_backend (EV_A))
915	{	1511	{
916	siginit (EV_A);
917
918	#ifndef _WIN32	1512	#ifndef _WIN32
919	ev_signal_init (&childev, childcb, SIGCHLD);	1513	ev_signal_init (&childev, childcb, SIGCHLD);
920	ev_set_priority (&childev, EV_MAXPRI);	1514	ev_set_priority (&childev, EV_MAXPRI);
921	ev_signal_start (EV_A_ &childev);	1515	ev_signal_start (EV_A_ &childev);
922	ev_unref (EV_A); /* child watcher should not keep loop alive */	1516	ev_unref (EV_A); /* child watcher should not keep loop alive */
923	#endif	1517	#endif
924	}	1518	}
925	else	1519	else
926	default_loop = 0;	1520	ev_default_loop_ptr = 0;
927	}	1521	}
928		1522
929	return default_loop;	1523	return ev_default_loop_ptr;
930	}	1524	}
931		1525
932	void	1526	void
933	ev_default_destroy (void)	1527	ev_default_destroy (void)
934	{	1528	{
935	#if EV_MULTIPLICITY	1529	#if EV_MULTIPLICITY
936	struct ev_loop *loop = default_loop;	1530	struct ev_loop *loop = ev_default_loop_ptr;
937	#endif	1531	#endif
938		1532
939	#ifndef _WIN32	1533	#ifndef _WIN32
940	ev_ref (EV_A); /* child watcher */	1534	ev_ref (EV_A); /* child watcher */
941	ev_signal_stop (EV_A_ &childev);	1535	ev_signal_stop (EV_A_ &childev);
942	#endif	1536	#endif
943		1537
944	ev_ref (EV_A); /* signal watcher */
945	ev_io_stop (EV_A_ &sigev);
946
947	close (sigpipe [0]); sigpipe [0] = 0;
948	close (sigpipe [1]); sigpipe [1] = 0;
949
950	loop_destroy (EV_A);	1538	loop_destroy (EV_A);
951	}	1539	}
952		1540
953	void	1541	void
954	ev_default_fork (void)	1542	ev_default_fork (void)
955	{	1543	{
956	#if EV_MULTIPLICITY	1544	#if EV_MULTIPLICITY
957	struct ev_loop *loop = default_loop;	1545	struct ev_loop *loop = ev_default_loop_ptr;
958	#endif	1546	#endif
959		1547
960	if (method)	1548	if (backend)
961	postfork = 1;	1549	postfork = 1; /* must be in line with ev_loop_fork */
962	}	1550	}
963		1551
964	/*****************************************************************************/	1552	/*****************************************************************************/
965		1553
966	static int	1554	void
967	any_pending (EV_P)	1555	ev_invoke (EV_P_ void *w, int revents)
968	{	1556	{
969	int pri;	1557	EV_CB_INVOKE ((W)w, revents);
970
971	for (pri = NUMPRI; pri--; )
972	if (pendingcnt [pri])
973	return 1;
974
975	return 0;
976	}	1558	}
977		1559
978	static void	1560	void inline_speed
979	call_pending (EV_P)	1561	call_pending (EV_P)
980	{	1562	{
981	int pri;	1563	int pri;
982		1564
983	for (pri = NUMPRI; pri--; )	1565	for (pri = NUMPRI; pri--; )
984	while (pendingcnt [pri])	1566	while (pendingcnt [pri])
985	{	1567	{
986	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1568	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
987		1569
988	if (p->w)	1570	if (expect_true (p->w))
989	{	1571	{
		1572	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1573
990	p->w->pending = 0;	1574	p->w->pending = 0;
991	EV_CB_INVOKE (p->w, p->events);	1575	EV_CB_INVOKE (p->w, p->events);
992	}	1576	}
993	}	1577	}
994	}	1578	}
995		1579
996	static void	1580	#if EV_IDLE_ENABLE
		1581	void inline_size
		1582	idle_reify (EV_P)
		1583	{
		1584	if (expect_false (idleall))
		1585	{
		1586	int pri;
		1587
		1588	for (pri = NUMPRI; pri--; )
		1589	{
		1590	if (pendingcnt [pri])
		1591	break;
		1592
		1593	if (idlecnt [pri])
		1594	{
		1595	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1596	break;
		1597	}
		1598	}
		1599	}
		1600	}
		1601	#endif
		1602
		1603	void inline_size
997	timers_reify (EV_P)	1604	timers_reify (EV_P)
998	{	1605	{
999	while (timercnt && ((WT)timers [0])->at <= mn_now)	1606	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1000	{	1607	{
1001	struct ev_timer *w = timers [0];	1608	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1002		1609
1003	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1610	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1004		1611
1005	/* first reschedule or stop timer */	1612	/* first reschedule or stop timer */
1006	if (w->repeat)	1613	if (w->repeat)
1007	{	1614	{
		1615	ev_at (w) += w->repeat;
		1616	if (ev_at (w) < mn_now)
		1617	ev_at (w) = mn_now;
		1618
1008	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1619	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1009		1620
1010	((WT)w)->at += w->repeat;	1621	ANHE_at_set (timers [HEAP0]);
1011	if (((WT)w)->at < mn_now)
1012	((WT)w)->at = mn_now;
1013
1014	downheap ((WT *)timers, timercnt, 0);	1622	downheap (timers, timercnt, HEAP0);
1015	}	1623	}
1016	else	1624	else
1017	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1625	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1018		1626
1019	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1627	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1020	}	1628	}
1021	}	1629	}
1022		1630
1023	#if EV_PERIODICS	1631	#if EV_PERIODIC_ENABLE
1024	static void	1632	void inline_size
1025	periodics_reify (EV_P)	1633	periodics_reify (EV_P)
1026	{	1634	{
1027	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1635	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1028	{	1636	{
1029	struct ev_periodic *w = periodics [0];	1637	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1030		1638
1031	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1639	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1032		1640
1033	/* first reschedule or stop timer */	1641	/* first reschedule or stop timer */
1034	if (w->reschedule_cb)	1642	if (w->reschedule_cb)
1035	{	1643	{
1036	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1644	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1645
1037	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1646	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		1647
		1648	ANHE_at_set (periodics [HEAP0]);
1038	downheap ((WT *)periodics, periodiccnt, 0);	1649	downheap (periodics, periodiccnt, HEAP0);
1039	}	1650	}
1040	else if (w->interval)	1651	else if (w->interval)
1041	{	1652	{
1042	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1653	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1654	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
		1655
1043	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1656	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) >= ev_rt_now));
		1657
		1658	ANHE_at_set (periodics [HEAP0]);
1044	downheap ((WT *)periodics, periodiccnt, 0);	1659	downheap (periodics, periodiccnt, HEAP0);
1045	}	1660	}
1046	else	1661	else
1047	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1662	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1048		1663
1049	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1664	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1050	}	1665	}
1051	}	1666	}
1052		1667
1053	static void	1668	static void noinline
1054	periodics_reschedule (EV_P)	1669	periodics_reschedule (EV_P)
1055	{	1670	{
1056	int i;	1671	int i;
1057		1672
1058	/* adjust periodics after time jump */	1673	/* adjust periodics after time jump */
		1674	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		1675	{
		1676	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		1677
		1678	if (w->reschedule_cb)
		1679	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1680	else if (w->interval)
		1681	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1682
		1683	ANHE_at_set (periodics [i]);
		1684	}
		1685
		1686	/* we don't use floyds algorithm, uphead is simpler and is more cache-efficient */
		1687	/* also, this is easy and corretc for both 2-heaps and 4-heaps */
1059	for (i = 0; i < periodiccnt; ++i)	1688	for (i = 0; i < periodiccnt; ++i)
1060	{	1689	upheap (periodics, i + HEAP0);
1061	struct ev_periodic *w = periodics [i];	1690	}
		1691	#endif
1062		1692
1063	if (w->reschedule_cb)	1693	void inline_speed
1064	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1694	time_update (EV_P_ ev_tstamp max_block)
1065	else if (w->interval)	1695	{
1066	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1696	int i;
		1697
		1698	#if EV_USE_MONOTONIC
		1699	if (expect_true (have_monotonic))
1067	}	1700	{
		1701	ev_tstamp odiff = rtmn_diff;
1068		1702
1069	/* now rebuild the heap */
1070	for (i = periodiccnt >> 1; i--; )
1071	downheap ((WT *)periodics, periodiccnt, i);
1072	}
1073	#endif
1074
1075	inline int
1076	time_update_monotonic (EV_P)
1077	{
1078	mn_now = get_clock ();	1703	mn_now = get_clock ();
1079		1704
		1705	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1706	/* interpolate in the meantime */
1080	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1707	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1081	{	1708	{
1082	ev_rt_now = rtmn_diff + mn_now;	1709	ev_rt_now = rtmn_diff + mn_now;
1083	return 0;	1710	return;
1084	}	1711	}
1085	else	1712
1086	{
1087	now_floor = mn_now;	1713	now_floor = mn_now;
1088	ev_rt_now = ev_time ();	1714	ev_rt_now = ev_time ();
1089	return 1;
1090	}
1091	}
1092		1715
1093	static void	1716	/* loop a few times, before making important decisions.
1094	time_update (EV_P)	1717	* on the choice of "4": one iteration isn't enough,
1095	{	1718	* in case we get preempted during the calls to
1096	int i;	1719	* ev_time and get_clock. a second call is almost guaranteed
1097		1720	* to succeed in that case, though. and looping a few more times
1098	#if EV_USE_MONOTONIC	1721	* doesn't hurt either as we only do this on time-jumps or
1099	if (expect_true (have_monotonic))	1722	* in the unlikely event of having been preempted here.
1100	{	1723	*/
1101	if (time_update_monotonic (EV_A))	1724	for (i = 4; --i; )
1102	{	1725	{
1103	ev_tstamp odiff = rtmn_diff;	1726	rtmn_diff = ev_rt_now - mn_now;
1104		1727
1105	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1728	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
		1729	return; /* all is well */
		1730
		1731	ev_rt_now = ev_time ();
		1732	mn_now = get_clock ();
		1733	now_floor = mn_now;
		1734	}
		1735
		1736	# if EV_PERIODIC_ENABLE
		1737	periodics_reschedule (EV_A);
		1738	# endif
		1739	/* no timer adjustment, as the monotonic clock doesn't jump */
		1740	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1741	}
		1742	else
		1743	#endif
		1744	{
		1745	ev_rt_now = ev_time ();
		1746
		1747	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1748	{
		1749	#if EV_PERIODIC_ENABLE
		1750	periodics_reschedule (EV_A);
		1751	#endif
		1752	/* adjust timers. this is easy, as the offset is the same for all of them */
		1753	for (i = 0; i < timercnt; ++i)
1106	{	1754	{
1107	rtmn_diff = ev_rt_now - mn_now;	1755	ANHE *he = timers + i + HEAP0;
1108		1756	ANHE_w (*he)->at += ev_rt_now - mn_now;
1109	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1757	ANHE_at_set (*he);
1110	return; /* all is well */
1111
1112	ev_rt_now = ev_time ();
1113	mn_now = get_clock ();
1114	now_floor = mn_now;
1115	}	1758	}
1116
1117	# if EV_PERIODICS
1118	periodics_reschedule (EV_A);
1119	# endif
1120	/* no timer adjustment, as the monotonic clock doesn't jump */
1121	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1122	}	1759	}
1123	}
1124	else
1125	#endif
1126	{
1127	ev_rt_now = ev_time ();
1128
1129	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1130	{
1131	#if EV_PERIODICS
1132	periodics_reschedule (EV_A);
1133	#endif
1134
1135	/* adjust timers. this is easy, as the offset is the same for all */
1136	for (i = 0; i < timercnt; ++i)
1137	((WT)timers [i])->at += ev_rt_now - mn_now;
1138	}
1139		1760
1140	mn_now = ev_rt_now;	1761	mn_now = ev_rt_now;
1141	}	1762	}
1142	}	1763	}
1143		1764
…		…
1156	static int loop_done;	1777	static int loop_done;
1157		1778
1158	void	1779	void
1159	ev_loop (EV_P_ int flags)	1780	ev_loop (EV_P_ int flags)
1160	{	1781	{
1161	double block;	1782	loop_done = EVUNLOOP_CANCEL;
1162	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1783
		1784	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1163		1785
1164	do	1786	do
1165	{	1787	{
		1788	#ifndef _WIN32
		1789	if (expect_false (curpid)) /* penalise the forking check even more */
		1790	if (expect_false (getpid () != curpid))
		1791	{
		1792	curpid = getpid ();
		1793	postfork = 1;
		1794	}
		1795	#endif
		1796
		1797	#if EV_FORK_ENABLE
		1798	/* we might have forked, so queue fork handlers */
		1799	if (expect_false (postfork))
		1800	if (forkcnt)
		1801	{
		1802	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1803	call_pending (EV_A);
		1804	}
		1805	#endif
		1806
1166	/* queue check watchers (and execute them) */	1807	/* queue prepare watchers (and execute them) */
1167	if (expect_false (preparecnt))	1808	if (expect_false (preparecnt))
1168	{	1809	{
1169	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1810	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1170	call_pending (EV_A);	1811	call_pending (EV_A);
1171	}	1812	}
1172		1813
		1814	if (expect_false (!activecnt))
		1815	break;
		1816
1173	/* we might have forked, so reify kernel state if necessary */	1817	/* we might have forked, so reify kernel state if necessary */
1174	if (expect_false (postfork))	1818	if (expect_false (postfork))
1175	loop_fork (EV_A);	1819	loop_fork (EV_A);
1176		1820
1177	/* update fd-related kernel structures */	1821	/* update fd-related kernel structures */
1178	fd_reify (EV_A);	1822	fd_reify (EV_A);
1179		1823
1180	/* calculate blocking time */	1824	/* calculate blocking time */
		1825	{
		1826	ev_tstamp waittime = 0.;
		1827	ev_tstamp sleeptime = 0.;
1181		1828
1182	/* we only need this for !monotonic clock or timers, but as we basically	1829	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1183	always have timers, we just calculate it always */
1184	#if EV_USE_MONOTONIC
1185	if (expect_true (have_monotonic))
1186	time_update_monotonic (EV_A);
1187	else
1188	#endif
1189	{	1830	{
1190	ev_rt_now = ev_time ();	1831	/* update time to cancel out callback processing overhead */
1191	mn_now = ev_rt_now;	1832	time_update (EV_A_ 1e100);
1192	}
1193		1833
1194	if (flags & EVLOOP_NONBLOCK || idlecnt)
1195	block = 0.;
1196	else
1197	{
1198	block = MAX_BLOCKTIME;	1834	waittime = MAX_BLOCKTIME;
1199		1835
1200	if (timercnt)	1836	if (timercnt)
1201	{	1837	{
1202	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1838	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1203	if (block > to) block = to;	1839	if (waittime > to) waittime = to;
1204	}	1840	}
1205		1841
1206	#if EV_PERIODICS	1842	#if EV_PERIODIC_ENABLE
1207	if (periodiccnt)	1843	if (periodiccnt)
1208	{	1844	{
1209	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1845	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1210	if (block > to) block = to;	1846	if (waittime > to) waittime = to;
1211	}	1847	}
1212	#endif	1848	#endif
1213		1849
1214	if (block < 0.) block = 0.;	1850	if (expect_false (waittime < timeout_blocktime))
		1851	waittime = timeout_blocktime;
		1852
		1853	sleeptime = waittime - backend_fudge;
		1854
		1855	if (expect_true (sleeptime > io_blocktime))
		1856	sleeptime = io_blocktime;
		1857
		1858	if (sleeptime)
		1859	{
		1860	ev_sleep (sleeptime);
		1861	waittime -= sleeptime;
		1862	}
1215	}	1863	}
1216		1864
1217	method_poll (EV_A_ block);	1865	++loop_count;
		1866	backend_poll (EV_A_ waittime);
1218		1867
1219	/* update ev_rt_now, do magic */	1868	/* update ev_rt_now, do magic */
1220	time_update (EV_A);	1869	time_update (EV_A_ waittime + sleeptime);
		1870	}
1221		1871
1222	/* queue pending timers and reschedule them */	1872	/* queue pending timers and reschedule them */
1223	timers_reify (EV_A); /* relative timers called last */	1873	timers_reify (EV_A); /* relative timers called last */
1224	#if EV_PERIODICS	1874	#if EV_PERIODIC_ENABLE
1225	periodics_reify (EV_A); /* absolute timers called first */	1875	periodics_reify (EV_A); /* absolute timers called first */
1226	#endif	1876	#endif
1227		1877
		1878	#if EV_IDLE_ENABLE
1228	/* queue idle watchers unless io or timers are pending */	1879	/* queue idle watchers unless other events are pending */
1229	if (idlecnt && !any_pending (EV_A))	1880	idle_reify (EV_A);
1230	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1881	#endif
1231		1882
1232	/* queue check watchers, to be executed first */	1883	/* queue check watchers, to be executed first */
1233	if (checkcnt)	1884	if (expect_false (checkcnt))
1234	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1885	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1235		1886
1236	call_pending (EV_A);	1887	call_pending (EV_A);
1237	}	1888	}
1238	while (activecnt && !loop_done);	1889	while (expect_true (
		1890	activecnt
		1891	&& !loop_done
		1892	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		1893	));
1239		1894
1240	if (loop_done != 2)	1895	if (loop_done == EVUNLOOP_ONE)
1241	loop_done = 0;	1896	loop_done = EVUNLOOP_CANCEL;
1242	}	1897	}
1243		1898
1244	void	1899	void
1245	ev_unloop (EV_P_ int how)	1900	ev_unloop (EV_P_ int how)
1246	{	1901	{
1247	loop_done = how;	1902	loop_done = how;
1248	}	1903	}
1249		1904
1250	/*****************************************************************************/	1905	/*****************************************************************************/
1251		1906
1252	inline void	1907	void inline_size
1253	wlist_add (WL *head, WL elem)	1908	wlist_add (WL *head, WL elem)
1254	{	1909	{
1255	elem->next = *head;	1910	elem->next = *head;
1256	*head = elem;	1911	*head = elem;
1257	}	1912	}
1258		1913
1259	inline void	1914	void inline_size
1260	wlist_del (WL *head, WL elem)	1915	wlist_del (WL *head, WL elem)
1261	{	1916	{
1262	while (*head)	1917	while (*head)
1263	{	1918	{
1264	if (*head == elem)	1919	if (*head == elem)
…		…
1269		1924
1270	head = &(*head)->next;	1925	head = &(*head)->next;
1271	}	1926	}
1272	}	1927	}
1273		1928
1274	inline void	1929	void inline_speed
1275	ev_clear_pending (EV_P_ W w)	1930	clear_pending (EV_P_ W w)
1276	{	1931	{
1277	if (w->pending)	1932	if (w->pending)
1278	{	1933	{
1279	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1934	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1280	w->pending = 0;	1935	w->pending = 0;
1281	}	1936	}
1282	}	1937	}
1283		1938
1284	inline void	1939	int
		1940	ev_clear_pending (EV_P_ void *w)
		1941	{
		1942	W w_ = (W)w;
		1943	int pending = w_->pending;
		1944
		1945	if (expect_true (pending))
		1946	{
		1947	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1948	w_->pending = 0;
		1949	p->w = 0;
		1950	return p->events;
		1951	}
		1952	else
		1953	return 0;
		1954	}
		1955
		1956	void inline_size
		1957	pri_adjust (EV_P_ W w)
		1958	{
		1959	int pri = w->priority;
		1960	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1961	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1962	w->priority = pri;
		1963	}
		1964
		1965	void inline_speed
1285	ev_start (EV_P_ W w, int active)	1966	ev_start (EV_P_ W w, int active)
1286	{	1967	{
1287	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1968	pri_adjust (EV_A_ w);
1288	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1289
1290	w->active = active;	1969	w->active = active;
1291	ev_ref (EV_A);	1970	ev_ref (EV_A);
1292	}	1971	}
1293		1972
1294	inline void	1973	void inline_size
1295	ev_stop (EV_P_ W w)	1974	ev_stop (EV_P_ W w)
1296	{	1975	{
1297	ev_unref (EV_A);	1976	ev_unref (EV_A);
1298	w->active = 0;	1977	w->active = 0;
1299	}	1978	}
1300		1979
1301	/*****************************************************************************/	1980	/*****************************************************************************/
1302		1981
1303	void	1982	void noinline
1304	ev_io_start (EV_P_ struct ev_io *w)	1983	ev_io_start (EV_P_ ev_io *w)
1305	{	1984	{
1306	int fd = w->fd;	1985	int fd = w->fd;
1307		1986
1308	if (ev_is_active (w))	1987	if (expect_false (ev_is_active (w)))
1309	return;	1988	return;
1310		1989
1311	assert (("ev_io_start called with negative fd", fd >= 0));	1990	assert (("ev_io_start called with negative fd", fd >= 0));
1312		1991
1313	ev_start (EV_A_ (W)w, 1);	1992	ev_start (EV_A_ (W)w, 1);
1314	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1993	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1315	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1994	wlist_add (&anfds[fd].head, (WL)w);
1316		1995
1317	fd_change (EV_A_ fd);	1996	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1997	w->events &= ~EV_IOFDSET;
1318	}	1998	}
1319		1999
1320	void	2000	void noinline
1321	ev_io_stop (EV_P_ struct ev_io *w)	2001	ev_io_stop (EV_P_ ev_io *w)
1322	{	2002	{
1323	ev_clear_pending (EV_A_ (W)w);	2003	clear_pending (EV_A_ (W)w);
1324	if (!ev_is_active (w))	2004	if (expect_false (!ev_is_active (w)))
1325	return;	2005	return;
1326		2006
1327	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2007	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1328		2008
1329	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	2009	wlist_del (&anfds[w->fd].head, (WL)w);
1330	ev_stop (EV_A_ (W)w);	2010	ev_stop (EV_A_ (W)w);
1331		2011
1332	fd_change (EV_A_ w->fd);	2012	fd_change (EV_A_ w->fd, 1);
1333	}	2013	}
1334		2014
1335	void	2015	void noinline
1336	ev_timer_start (EV_P_ struct ev_timer *w)	2016	ev_timer_start (EV_P_ ev_timer *w)
1337	{	2017	{
1338	if (ev_is_active (w))	2018	if (expect_false (ev_is_active (w)))
1339	return;	2019	return;
1340		2020
1341	((WT)w)->at += mn_now;	2021	ev_at (w) += mn_now;
1342		2022
1343	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2023	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1344		2024
1345	ev_start (EV_A_ (W)w, ++timercnt);	2025	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);
1346	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	2026	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1347	timers [timercnt - 1] = w;	2027	ANHE_w (timers [ev_active (w)]) = (WT)w;
1348	upheap ((WT *)timers, timercnt - 1);	2028	ANHE_at_set (timers [ev_active (w)]);
		2029	upheap (timers, ev_active (w));
1349		2030
1350	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	2031	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1351	}	2032	}
1352		2033
1353	void	2034	void noinline
1354	ev_timer_stop (EV_P_ struct ev_timer *w)	2035	ev_timer_stop (EV_P_ ev_timer *w)
1355	{	2036	{
1356	ev_clear_pending (EV_A_ (W)w);	2037	clear_pending (EV_A_ (W)w);
1357	if (!ev_is_active (w))	2038	if (expect_false (!ev_is_active (w)))
1358	return;	2039	return;
1359		2040
		2041	{
		2042	int active = ev_active (w);
		2043
1360	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	2044	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1361		2045
1362	if (((W)w)->active < timercnt--)	2046	if (expect_true (active < timercnt + HEAP0 - 1))
1363	{	2047	{
1364	timers [((W)w)->active - 1] = timers [timercnt];	2048	timers [active] = timers [timercnt + HEAP0 - 1];
1365	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	2049	adjustheap (timers, timercnt, active);
1366	}	2050	}
1367		2051
1368	((WT)w)->at -= mn_now;	2052	--timercnt;
		2053	}
		2054
		2055	ev_at (w) -= mn_now;
1369		2056
1370	ev_stop (EV_A_ (W)w);	2057	ev_stop (EV_A_ (W)w);
1371	}	2058	}
1372		2059
1373	void	2060	void noinline
1374	ev_timer_again (EV_P_ struct ev_timer *w)	2061	ev_timer_again (EV_P_ ev_timer *w)
1375	{	2062	{
1376	if (ev_is_active (w))	2063	if (ev_is_active (w))
1377	{	2064	{
1378	if (w->repeat)	2065	if (w->repeat)
1379	{	2066	{
1380	((WT)w)->at = mn_now + w->repeat;	2067	ev_at (w) = mn_now + w->repeat;
		2068	ANHE_at_set (timers [ev_active (w)]);
1381	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	2069	adjustheap (timers, timercnt, ev_active (w));
1382	}	2070	}
1383	else	2071	else
1384	ev_timer_stop (EV_A_ w);	2072	ev_timer_stop (EV_A_ w);
1385	}	2073	}
1386	else if (w->repeat)	2074	else if (w->repeat)
		2075	{
		2076	ev_at (w) = w->repeat;
1387	ev_timer_start (EV_A_ w);	2077	ev_timer_start (EV_A_ w);
		2078	}
1388	}	2079	}
1389		2080
1390	#if EV_PERIODICS	2081	#if EV_PERIODIC_ENABLE
1391	void	2082	void noinline
1392	ev_periodic_start (EV_P_ struct ev_periodic *w)	2083	ev_periodic_start (EV_P_ ev_periodic *w)
1393	{	2084	{
1394	if (ev_is_active (w))	2085	if (expect_false (ev_is_active (w)))
1395	return;	2086	return;
1396		2087
1397	if (w->reschedule_cb)	2088	if (w->reschedule_cb)
1398	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2089	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1399	else if (w->interval)	2090	else if (w->interval)
1400	{	2091	{
1401	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2092	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1402	/* this formula differs from the one in periodic_reify because we do not always round up */	2093	/* this formula differs from the one in periodic_reify because we do not always round up */
1403	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	2094	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1404	}	2095	}
		2096	else
		2097	ev_at (w) = w->offset;
1405		2098
1406	ev_start (EV_A_ (W)w, ++periodiccnt);	2099	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);
1407	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	2100	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1408	periodics [periodiccnt - 1] = w;	2101	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1409	upheap ((WT *)periodics, periodiccnt - 1);	2102	ANHE_at_set (periodics [ev_active (w)]);
		2103	upheap (periodics, ev_active (w));
1410		2104
1411	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	2105	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1412	}	2106	}
1413		2107
1414	void	2108	void noinline
1415	ev_periodic_stop (EV_P_ struct ev_periodic *w)	2109	ev_periodic_stop (EV_P_ ev_periodic *w)
1416	{	2110	{
1417	ev_clear_pending (EV_A_ (W)w);	2111	clear_pending (EV_A_ (W)w);
1418	if (!ev_is_active (w))	2112	if (expect_false (!ev_is_active (w)))
1419	return;	2113	return;
1420		2114
		2115	{
		2116	int active = ev_active (w);
		2117
1421	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	2118	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1422		2119
1423	if (((W)w)->active < periodiccnt--)	2120	if (expect_true (active < periodiccnt + HEAP0 - 1))
1424	{	2121	{
1425	periodics [((W)w)->active - 1] = periodics [periodiccnt];	2122	periodics [active] = periodics [periodiccnt + HEAP0 - 1];
1426	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	2123	adjustheap (periodics, periodiccnt, active);
1427	}	2124	}
		2125
		2126	--periodiccnt;
		2127	}
1428		2128
1429	ev_stop (EV_A_ (W)w);	2129	ev_stop (EV_A_ (W)w);
1430	}	2130	}
1431		2131
1432	void	2132	void noinline
1433	ev_periodic_again (EV_P_ struct ev_periodic *w)	2133	ev_periodic_again (EV_P_ ev_periodic *w)
1434	{	2134	{
1435	/* TODO: use adjustheap and recalculation */	2135	/* TODO: use adjustheap and recalculation */
1436	ev_periodic_stop (EV_A_ w);	2136	ev_periodic_stop (EV_A_ w);
1437	ev_periodic_start (EV_A_ w);	2137	ev_periodic_start (EV_A_ w);
1438	}	2138	}
1439	#endif	2139	#endif
1440		2140
1441	void
1442	ev_idle_start (EV_P_ struct ev_idle *w)
1443	{
1444	if (ev_is_active (w))
1445	return;
1446
1447	ev_start (EV_A_ (W)w, ++idlecnt);
1448	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1449	idles [idlecnt - 1] = w;
1450	}
1451
1452	void
1453	ev_idle_stop (EV_P_ struct ev_idle *w)
1454	{
1455	ev_clear_pending (EV_A_ (W)w);
1456	if (!ev_is_active (w))
1457	return;
1458
1459	idles [((W)w)->active - 1] = idles [--idlecnt];
1460	ev_stop (EV_A_ (W)w);
1461	}
1462
1463	void
1464	ev_prepare_start (EV_P_ struct ev_prepare *w)
1465	{
1466	if (ev_is_active (w))
1467	return;
1468
1469	ev_start (EV_A_ (W)w, ++preparecnt);
1470	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1471	prepares [preparecnt - 1] = w;
1472	}
1473
1474	void
1475	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1476	{
1477	ev_clear_pending (EV_A_ (W)w);
1478	if (!ev_is_active (w))
1479	return;
1480
1481	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1482	ev_stop (EV_A_ (W)w);
1483	}
1484
1485	void
1486	ev_check_start (EV_P_ struct ev_check *w)
1487	{
1488	if (ev_is_active (w))
1489	return;
1490
1491	ev_start (EV_A_ (W)w, ++checkcnt);
1492	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1493	checks [checkcnt - 1] = w;
1494	}
1495
1496	void
1497	ev_check_stop (EV_P_ struct ev_check *w)
1498	{
1499	ev_clear_pending (EV_A_ (W)w);
1500	if (!ev_is_active (w))
1501	return;
1502
1503	checks [((W)w)->active - 1] = checks [--checkcnt];
1504	ev_stop (EV_A_ (W)w);
1505	}
1506
1507	#ifndef SA_RESTART	2141	#ifndef SA_RESTART
1508	# define SA_RESTART 0	2142	# define SA_RESTART 0
1509	#endif	2143	#endif
1510		2144
1511	void	2145	void noinline
1512	ev_signal_start (EV_P_ struct ev_signal *w)	2146	ev_signal_start (EV_P_ ev_signal *w)
1513	{	2147	{
1514	#if EV_MULTIPLICITY	2148	#if EV_MULTIPLICITY
1515	assert (("signal watchers are only supported in the default loop", loop == default_loop));	2149	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1516	#endif	2150	#endif
1517	if (ev_is_active (w))	2151	if (expect_false (ev_is_active (w)))
1518	return;	2152	return;
1519		2153
1520	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2154	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1521		2155
		2156	evpipe_init (EV_A);
		2157
		2158	{
		2159	#ifndef _WIN32
		2160	sigset_t full, prev;
		2161	sigfillset (&full);
		2162	sigprocmask (SIG_SETMASK, &full, &prev);
		2163	#endif
		2164
		2165	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		2166
		2167	#ifndef _WIN32
		2168	sigprocmask (SIG_SETMASK, &prev, 0);
		2169	#endif
		2170	}
		2171
1522	ev_start (EV_A_ (W)w, 1);	2172	ev_start (EV_A_ (W)w, 1);
1523	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1524	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2173	wlist_add (&signals [w->signum - 1].head, (WL)w);
1525		2174
1526	if (!((WL)w)->next)	2175	if (!((WL)w)->next)
1527	{	2176	{
1528	#if _WIN32	2177	#if _WIN32
1529	signal (w->signum, sighandler);	2178	signal (w->signum, ev_sighandler);
1530	#else	2179	#else
1531	struct sigaction sa;	2180	struct sigaction sa;
1532	sa.sa_handler = sighandler;	2181	sa.sa_handler = ev_sighandler;
1533	sigfillset (&sa.sa_mask);	2182	sigfillset (&sa.sa_mask);
1534	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2183	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1535	sigaction (w->signum, &sa, 0);	2184	sigaction (w->signum, &sa, 0);
1536	#endif	2185	#endif
1537	}	2186	}
1538	}	2187	}
1539		2188
1540	void	2189	void noinline
1541	ev_signal_stop (EV_P_ struct ev_signal *w)	2190	ev_signal_stop (EV_P_ ev_signal *w)
1542	{	2191	{
1543	ev_clear_pending (EV_A_ (W)w);	2192	clear_pending (EV_A_ (W)w);
1544	if (!ev_is_active (w))	2193	if (expect_false (!ev_is_active (w)))
1545	return;	2194	return;
1546		2195
1547	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2196	wlist_del (&signals [w->signum - 1].head, (WL)w);
1548	ev_stop (EV_A_ (W)w);	2197	ev_stop (EV_A_ (W)w);
1549		2198
1550	if (!signals [w->signum - 1].head)	2199	if (!signals [w->signum - 1].head)
1551	signal (w->signum, SIG_DFL);	2200	signal (w->signum, SIG_DFL);
1552	}	2201	}
1553		2202
1554	void	2203	void
1555	ev_child_start (EV_P_ struct ev_child *w)	2204	ev_child_start (EV_P_ ev_child *w)
1556	{	2205	{
1557	#if EV_MULTIPLICITY	2206	#if EV_MULTIPLICITY
1558	assert (("child watchers are only supported in the default loop", loop == default_loop));	2207	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1559	#endif	2208	#endif
1560	if (ev_is_active (w))	2209	if (expect_false (ev_is_active (w)))
1561	return;	2210	return;
1562		2211
1563	ev_start (EV_A_ (W)w, 1);	2212	ev_start (EV_A_ (W)w, 1);
1564	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2213	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1565	}	2214	}
1566		2215
1567	void	2216	void
1568	ev_child_stop (EV_P_ struct ev_child *w)	2217	ev_child_stop (EV_P_ ev_child *w)
1569	{	2218	{
1570	ev_clear_pending (EV_A_ (W)w);	2219	clear_pending (EV_A_ (W)w);
1571	if (!ev_is_active (w))	2220	if (expect_false (!ev_is_active (w)))
1572	return;	2221	return;
1573		2222
1574	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2223	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1575	ev_stop (EV_A_ (W)w);	2224	ev_stop (EV_A_ (W)w);
1576	}	2225	}
1577		2226
		2227	#if EV_STAT_ENABLE
		2228
		2229	# ifdef _WIN32
		2230	# undef lstat
		2231	# define lstat(a,b) _stati64 (a,b)
		2232	# endif
		2233
		2234	#define DEF_STAT_INTERVAL 5.0074891
		2235	#define MIN_STAT_INTERVAL 0.1074891
		2236
		2237	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		2238
		2239	#if EV_USE_INOTIFY
		2240	# define EV_INOTIFY_BUFSIZE 8192
		2241
		2242	static void noinline
		2243	infy_add (EV_P_ ev_stat *w)
		2244	{
		2245	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);
		2246
		2247	if (w->wd < 0)
		2248	{
		2249	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		2250
		2251	/* monitor some parent directory for speedup hints */
		2252	/* note that exceeding the hardcoded limit is not a correctness issue, */
		2253	/* but an efficiency issue only */
		2254	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		2255	{
		2256	char path [4096];
		2257	strcpy (path, w->path);
		2258
		2259	do
		2260	{
		2261	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		2262	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		2263
		2264	char *pend = strrchr (path, '/');
		2265
		2266	if (!pend)
		2267	break; /* whoops, no '/', complain to your admin */
		2268
		2269	*pend = 0;
		2270	w->wd = inotify_add_watch (fs_fd, path, mask);
		2271	}
		2272	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		2273	}
		2274	}
		2275	else
		2276	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		2277
		2278	if (w->wd >= 0)
		2279	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2280	}
		2281
		2282	static void noinline
		2283	infy_del (EV_P_ ev_stat *w)
		2284	{
		2285	int slot;
		2286	int wd = w->wd;
		2287
		2288	if (wd < 0)
		2289	return;
		2290
		2291	w->wd = -2;
		2292	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		2293	wlist_del (&fs_hash [slot].head, (WL)w);
		2294
		2295	/* remove this watcher, if others are watching it, they will rearm */
		2296	inotify_rm_watch (fs_fd, wd);
		2297	}
		2298
		2299	static void noinline
		2300	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		2301	{
		2302	if (slot < 0)
		2303	/* overflow, need to check for all hahs slots */
		2304	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2305	infy_wd (EV_A_ slot, wd, ev);
		2306	else
		2307	{
		2308	WL w_;
		2309
		2310	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		2311	{
		2312	ev_stat *w = (ev_stat *)w_;
		2313	w_ = w_->next; /* lets us remove this watcher and all before it */
		2314
		2315	if (w->wd == wd || wd == -1)
		2316	{
		2317	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		2318	{
		2319	w->wd = -1;
		2320	infy_add (EV_A_ w); /* re-add, no matter what */
		2321	}
		2322
		2323	stat_timer_cb (EV_A_ &w->timer, 0);
		2324	}
		2325	}
		2326	}
		2327	}
		2328
		2329	static void
		2330	infy_cb (EV_P_ ev_io *w, int revents)
		2331	{
		2332	char buf [EV_INOTIFY_BUFSIZE];
		2333	struct inotify_event *ev = (struct inotify_event *)buf;
		2334	int ofs;
		2335	int len = read (fs_fd, buf, sizeof (buf));
		2336
		2337	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2338	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2339	}
		2340
		2341	void inline_size
		2342	infy_init (EV_P)
		2343	{
		2344	if (fs_fd != -2)
		2345	return;
		2346
		2347	fs_fd = inotify_init ();
		2348
		2349	if (fs_fd >= 0)
		2350	{
		2351	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2352	ev_set_priority (&fs_w, EV_MAXPRI);
		2353	ev_io_start (EV_A_ &fs_w);
		2354	}
		2355	}
		2356
		2357	void inline_size
		2358	infy_fork (EV_P)
		2359	{
		2360	int slot;
		2361
		2362	if (fs_fd < 0)
		2363	return;
		2364
		2365	close (fs_fd);
		2366	fs_fd = inotify_init ();
		2367
		2368	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2369	{
		2370	WL w_ = fs_hash [slot].head;
		2371	fs_hash [slot].head = 0;
		2372
		2373	while (w_)
		2374	{
		2375	ev_stat *w = (ev_stat *)w_;
		2376	w_ = w_->next; /* lets us add this watcher */
		2377
		2378	w->wd = -1;
		2379
		2380	if (fs_fd >= 0)
		2381	infy_add (EV_A_ w); /* re-add, no matter what */
		2382	else
		2383	ev_timer_start (EV_A_ &w->timer);
		2384	}
		2385
		2386	}
		2387	}
		2388
		2389	#endif
		2390
		2391	void
		2392	ev_stat_stat (EV_P_ ev_stat *w)
		2393	{
		2394	if (lstat (w->path, &w->attr) < 0)
		2395	w->attr.st_nlink = 0;
		2396	else if (!w->attr.st_nlink)
		2397	w->attr.st_nlink = 1;
		2398	}
		2399
		2400	static void noinline
		2401	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2402	{
		2403	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2404
		2405	/* we copy this here each the time so that */
		2406	/* prev has the old value when the callback gets invoked */
		2407	w->prev = w->attr;
		2408	ev_stat_stat (EV_A_ w);
		2409
		2410	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2411	if (
		2412	w->prev.st_dev != w->attr.st_dev
		2413	|| w->prev.st_ino != w->attr.st_ino
		2414	|| w->prev.st_mode != w->attr.st_mode
		2415	|| w->prev.st_nlink != w->attr.st_nlink
		2416	|| w->prev.st_uid != w->attr.st_uid
		2417	|| w->prev.st_gid != w->attr.st_gid
		2418	|| w->prev.st_rdev != w->attr.st_rdev
		2419	|| w->prev.st_size != w->attr.st_size
		2420	|| w->prev.st_atime != w->attr.st_atime
		2421	|| w->prev.st_mtime != w->attr.st_mtime
		2422	|| w->prev.st_ctime != w->attr.st_ctime
		2423	) {
		2424	#if EV_USE_INOTIFY
		2425	infy_del (EV_A_ w);
		2426	infy_add (EV_A_ w);
		2427	ev_stat_stat (EV_A_ w); /* avoid race... */
		2428	#endif
		2429
		2430	ev_feed_event (EV_A_ w, EV_STAT);
		2431	}
		2432	}
		2433
		2434	void
		2435	ev_stat_start (EV_P_ ev_stat *w)
		2436	{
		2437	if (expect_false (ev_is_active (w)))
		2438	return;
		2439
		2440	/* since we use memcmp, we need to clear any padding data etc. */
		2441	memset (&w->prev, 0, sizeof (ev_statdata));
		2442	memset (&w->attr, 0, sizeof (ev_statdata));
		2443
		2444	ev_stat_stat (EV_A_ w);
		2445
		2446	if (w->interval < MIN_STAT_INTERVAL)
		2447	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2448
		2449	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2450	ev_set_priority (&w->timer, ev_priority (w));
		2451
		2452	#if EV_USE_INOTIFY
		2453	infy_init (EV_A);
		2454
		2455	if (fs_fd >= 0)
		2456	infy_add (EV_A_ w);
		2457	else
		2458	#endif
		2459	ev_timer_start (EV_A_ &w->timer);
		2460
		2461	ev_start (EV_A_ (W)w, 1);
		2462	}
		2463
		2464	void
		2465	ev_stat_stop (EV_P_ ev_stat *w)
		2466	{
		2467	clear_pending (EV_A_ (W)w);
		2468	if (expect_false (!ev_is_active (w)))
		2469	return;
		2470
		2471	#if EV_USE_INOTIFY
		2472	infy_del (EV_A_ w);
		2473	#endif
		2474	ev_timer_stop (EV_A_ &w->timer);
		2475
		2476	ev_stop (EV_A_ (W)w);
		2477	}
		2478	#endif
		2479
		2480	#if EV_IDLE_ENABLE
		2481	void
		2482	ev_idle_start (EV_P_ ev_idle *w)
		2483	{
		2484	if (expect_false (ev_is_active (w)))
		2485	return;
		2486
		2487	pri_adjust (EV_A_ (W)w);
		2488
		2489	{
		2490	int active = ++idlecnt [ABSPRI (w)];
		2491
		2492	++idleall;
		2493	ev_start (EV_A_ (W)w, active);
		2494
		2495	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2496	idles [ABSPRI (w)][active - 1] = w;
		2497	}
		2498	}
		2499
		2500	void
		2501	ev_idle_stop (EV_P_ ev_idle *w)
		2502	{
		2503	clear_pending (EV_A_ (W)w);
		2504	if (expect_false (!ev_is_active (w)))
		2505	return;
		2506
		2507	{
		2508	int active = ev_active (w);
		2509
		2510	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2511	ev_active (idles [ABSPRI (w)][active - 1]) = active;
		2512
		2513	ev_stop (EV_A_ (W)w);
		2514	--idleall;
		2515	}
		2516	}
		2517	#endif
		2518
		2519	void
		2520	ev_prepare_start (EV_P_ ev_prepare *w)
		2521	{
		2522	if (expect_false (ev_is_active (w)))
		2523	return;
		2524
		2525	ev_start (EV_A_ (W)w, ++preparecnt);
		2526	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2527	prepares [preparecnt - 1] = w;
		2528	}
		2529
		2530	void
		2531	ev_prepare_stop (EV_P_ ev_prepare *w)
		2532	{
		2533	clear_pending (EV_A_ (W)w);
		2534	if (expect_false (!ev_is_active (w)))
		2535	return;
		2536
		2537	{
		2538	int active = ev_active (w);
		2539
		2540	prepares [active - 1] = prepares [--preparecnt];
		2541	ev_active (prepares [active - 1]) = active;
		2542	}
		2543
		2544	ev_stop (EV_A_ (W)w);
		2545	}
		2546
		2547	void
		2548	ev_check_start (EV_P_ ev_check *w)
		2549	{
		2550	if (expect_false (ev_is_active (w)))
		2551	return;
		2552
		2553	ev_start (EV_A_ (W)w, ++checkcnt);
		2554	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2555	checks [checkcnt - 1] = w;
		2556	}
		2557
		2558	void
		2559	ev_check_stop (EV_P_ ev_check *w)
		2560	{
		2561	clear_pending (EV_A_ (W)w);
		2562	if (expect_false (!ev_is_active (w)))
		2563	return;
		2564
		2565	{
		2566	int active = ev_active (w);
		2567
		2568	checks [active - 1] = checks [--checkcnt];
		2569	ev_active (checks [active - 1]) = active;
		2570	}
		2571
		2572	ev_stop (EV_A_ (W)w);
		2573	}
		2574
		2575	#if EV_EMBED_ENABLE
		2576	void noinline
		2577	ev_embed_sweep (EV_P_ ev_embed *w)
		2578	{
		2579	ev_loop (w->other, EVLOOP_NONBLOCK);
		2580	}
		2581
		2582	static void
		2583	embed_io_cb (EV_P_ ev_io *io, int revents)
		2584	{
		2585	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2586
		2587	if (ev_cb (w))
		2588	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2589	else
		2590	ev_loop (w->other, EVLOOP_NONBLOCK);
		2591	}
		2592
		2593	static void
		2594	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2595	{
		2596	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2597
		2598	{
		2599	struct ev_loop *loop = w->other;
		2600
		2601	while (fdchangecnt)
		2602	{
		2603	fd_reify (EV_A);
		2604	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2605	}
		2606	}
		2607	}
		2608
		2609	#if 0
		2610	static void
		2611	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2612	{
		2613	ev_idle_stop (EV_A_ idle);
		2614	}
		2615	#endif
		2616
		2617	void
		2618	ev_embed_start (EV_P_ ev_embed *w)
		2619	{
		2620	if (expect_false (ev_is_active (w)))
		2621	return;
		2622
		2623	{
		2624	struct ev_loop *loop = w->other;
		2625	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2626	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
		2627	}
		2628
		2629	ev_set_priority (&w->io, ev_priority (w));
		2630	ev_io_start (EV_A_ &w->io);
		2631
		2632	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2633	ev_set_priority (&w->prepare, EV_MINPRI);
		2634	ev_prepare_start (EV_A_ &w->prepare);
		2635
		2636	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2637
		2638	ev_start (EV_A_ (W)w, 1);
		2639	}
		2640
		2641	void
		2642	ev_embed_stop (EV_P_ ev_embed *w)
		2643	{
		2644	clear_pending (EV_A_ (W)w);
		2645	if (expect_false (!ev_is_active (w)))
		2646	return;
		2647
		2648	ev_io_stop (EV_A_ &w->io);
		2649	ev_prepare_stop (EV_A_ &w->prepare);
		2650
		2651	ev_stop (EV_A_ (W)w);
		2652	}
		2653	#endif
		2654
		2655	#if EV_FORK_ENABLE
		2656	void
		2657	ev_fork_start (EV_P_ ev_fork *w)
		2658	{
		2659	if (expect_false (ev_is_active (w)))
		2660	return;
		2661
		2662	ev_start (EV_A_ (W)w, ++forkcnt);
		2663	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2664	forks [forkcnt - 1] = w;
		2665	}
		2666
		2667	void
		2668	ev_fork_stop (EV_P_ ev_fork *w)
		2669	{
		2670	clear_pending (EV_A_ (W)w);
		2671	if (expect_false (!ev_is_active (w)))
		2672	return;
		2673
		2674	{
		2675	int active = ev_active (w);
		2676
		2677	forks [active - 1] = forks [--forkcnt];
		2678	ev_active (forks [active - 1]) = active;
		2679	}
		2680
		2681	ev_stop (EV_A_ (W)w);
		2682	}
		2683	#endif
		2684
		2685	#if EV_ASYNC_ENABLE
		2686	void
		2687	ev_async_start (EV_P_ ev_async *w)
		2688	{
		2689	if (expect_false (ev_is_active (w)))
		2690	return;
		2691
		2692	evpipe_init (EV_A);
		2693
		2694	ev_start (EV_A_ (W)w, ++asynccnt);
		2695	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2696	asyncs [asynccnt - 1] = w;
		2697	}
		2698
		2699	void
		2700	ev_async_stop (EV_P_ ev_async *w)
		2701	{
		2702	clear_pending (EV_A_ (W)w);
		2703	if (expect_false (!ev_is_active (w)))
		2704	return;
		2705
		2706	{
		2707	int active = ev_active (w);
		2708
		2709	asyncs [active - 1] = asyncs [--asynccnt];
		2710	ev_active (asyncs [active - 1]) = active;
		2711	}
		2712
		2713	ev_stop (EV_A_ (W)w);
		2714	}
		2715
		2716	void
		2717	ev_async_send (EV_P_ ev_async *w)
		2718	{
		2719	w->sent = 1;
		2720	evpipe_write (EV_A_ &gotasync);
		2721	}
		2722	#endif
		2723
1578	/*****************************************************************************/	2724	/*****************************************************************************/
1579		2725
1580	struct ev_once	2726	struct ev_once
1581	{	2727	{
1582	struct ev_io io;	2728	ev_io io;
1583	struct ev_timer to;	2729	ev_timer to;
1584	void (*cb)(int revents, void *arg);	2730	void (*cb)(int revents, void *arg);
1585	void *arg;	2731	void *arg;
1586	};	2732	};
1587		2733
1588	static void	2734	static void
…		…
1597		2743
1598	cb (revents, arg);	2744	cb (revents, arg);
1599	}	2745	}
1600		2746
1601	static void	2747	static void
1602	once_cb_io (EV_P_ struct ev_io *w, int revents)	2748	once_cb_io (EV_P_ ev_io *w, int revents)
1603	{	2749	{
1604	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2750	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1605	}	2751	}
1606		2752
1607	static void	2753	static void
1608	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2754	once_cb_to (EV_P_ ev_timer *w, int revents)
1609	{	2755	{
1610	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2756	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1611	}	2757	}
1612		2758
1613	void	2759	void
1614	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2760	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1615	{	2761	{
1616	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	2762	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1617		2763
1618	if (!once)	2764	if (expect_false (!once))
		2765	{
1619	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2766	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1620	else	2767	return;
1621	{	2768	}
		2769
1622	once->cb = cb;	2770	once->cb = cb;
1623	once->arg = arg;	2771	once->arg = arg;
1624		2772
1625	ev_init (&once->io, once_cb_io);	2773	ev_init (&once->io, once_cb_io);
1626	if (fd >= 0)	2774	if (fd >= 0)
1627	{	2775	{
1628	ev_io_set (&once->io, fd, events);	2776	ev_io_set (&once->io, fd, events);
1629	ev_io_start (EV_A_ &once->io);	2777	ev_io_start (EV_A_ &once->io);
1630	}	2778	}
1631		2779
1632	ev_init (&once->to, once_cb_to);	2780	ev_init (&once->to, once_cb_to);
1633	if (timeout >= 0.)	2781	if (timeout >= 0.)
1634	{	2782	{
1635	ev_timer_set (&once->to, timeout, 0.);	2783	ev_timer_set (&once->to, timeout, 0.);
1636	ev_timer_start (EV_A_ &once->to);	2784	ev_timer_start (EV_A_ &once->to);
1637	}
1638	}	2785	}
1639	}	2786	}
		2787
		2788	#if EV_MULTIPLICITY
		2789	#include "ev_wrap.h"
		2790	#endif
1640		2791
1641	#ifdef __cplusplus	2792	#ifdef __cplusplus
1642	}	2793	}
1643	#endif	2794	#endif
1644		2795

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