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Comparing libev/ev.c (file contents):
Revision 1.126 by root, Sun Nov 18 01:25:23 2007 UTC vs.
Revision 1.242 by root, Fri May 9 14:07:19 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
…		…
50	# ifndef EV_USE_REALTIME	63	# ifndef EV_USE_REALTIME
51	# define EV_USE_REALTIME 0	64	# define EV_USE_REALTIME 0
52	# endif	65	# endif
53	# endif	66	# endif
54		67
55	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)	68	# ifndef EV_USE_NANOSLEEP
		69	# if HAVE_NANOSLEEP
56	# define EV_USE_SELECT 1	70	# define EV_USE_NANOSLEEP 1
57	# else	71	# else
58	# define EV_USE_SELECT 0	72	# define EV_USE_NANOSLEEP 0
		73	# endif
59	# endif	74	# endif
60		75
61	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)	76	# ifndef EV_USE_SELECT
		77	# if HAVE_SELECT && HAVE_SYS_SELECT_H
62	# define EV_USE_POLL 1	78	# define EV_USE_SELECT 1
63	# else	79	# else
64	# define EV_USE_POLL 0	80	# define EV_USE_SELECT 0
		81	# endif
65	# endif	82	# endif
66		83
67	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)	84	# ifndef EV_USE_POLL
		85	# if HAVE_POLL && HAVE_POLL_H
68	# define EV_USE_EPOLL 1	86	# define EV_USE_POLL 1
69	# else	87	# else
70	# define EV_USE_EPOLL 0	88	# define EV_USE_POLL 0
		89	# endif
71	# endif	90	# endif
72		91
73	# 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
74	# define EV_USE_KQUEUE 1	94	# define EV_USE_EPOLL 1
75	# else	95	# else
76	# define EV_USE_KQUEUE 0	96	# define EV_USE_EPOLL 0
		97	# endif
77	# endif	98	# endif
78		99
79	# if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT)	100	# ifndef EV_USE_KQUEUE
		101	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
80	# define EV_USE_PORT 1	102	# define EV_USE_KQUEUE 1
81	# else	103	# else
82	# define EV_USE_PORT 0	104	# define EV_USE_KQUEUE 0
		105	# endif
83	# 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
84		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
85	#endif	132	#endif
86		133
87	#include <math.h>	134	#include <math.h>
88	#include <stdlib.h>	135	#include <stdlib.h>
89	#include <fcntl.h>	136	#include <fcntl.h>
…		…
96	#include <sys/types.h>	143	#include <sys/types.h>
97	#include <time.h>	144	#include <time.h>
98		145
99	#include <signal.h>	146	#include <signal.h>
100		147
		148	#ifdef EV_H
		149	# include EV_H
		150	#else
		151	# include "ev.h"
		152	#endif
		153
101	#ifndef _WIN32	154	#ifndef _WIN32
102	# include <unistd.h>
103	# include <sys/time.h>	155	# include <sys/time.h>
104	# include <sys/wait.h>	156	# include <sys/wait.h>
		157	# include <unistd.h>
105	#else	158	#else
106	# define WIN32_LEAN_AND_MEAN	159	# define WIN32_LEAN_AND_MEAN
107	# include <windows.h>	160	# include <windows.h>
108	# ifndef EV_SELECT_IS_WINSOCKET	161	# ifndef EV_SELECT_IS_WINSOCKET
109	# define EV_SELECT_IS_WINSOCKET 1	162	# define EV_SELECT_IS_WINSOCKET 1
110	# endif	163	# endif
111	#endif	164	#endif
112		165
113	/**/	166	/* this block tries to deduce configuration from header-defined symbols and defaults */
114		167
115	#ifndef EV_USE_MONOTONIC	168	#ifndef EV_USE_MONOTONIC
116	# define EV_USE_MONOTONIC 0	169	# define EV_USE_MONOTONIC 0
117	#endif	170	#endif
118		171
119	#ifndef EV_USE_REALTIME	172	#ifndef EV_USE_REALTIME
120	# define EV_USE_REALTIME 0	173	# define EV_USE_REALTIME 0
		174	#endif
		175
		176	#ifndef EV_USE_NANOSLEEP
		177	# define EV_USE_NANOSLEEP 0
121	#endif	178	#endif
122		179
123	#ifndef EV_USE_SELECT	180	#ifndef EV_USE_SELECT
124	# define EV_USE_SELECT 1	181	# define EV_USE_SELECT 1
125	#endif	182	#endif
…		…
131	# define EV_USE_POLL 1	188	# define EV_USE_POLL 1
132	# endif	189	# endif
133	#endif	190	#endif
134		191
135	#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
136	# define EV_USE_EPOLL 0	196	# define EV_USE_EPOLL 0
		197	# endif
137	#endif	198	#endif
138		199
139	#ifndef EV_USE_KQUEUE	200	#ifndef EV_USE_KQUEUE
140	# define EV_USE_KQUEUE 0	201	# define EV_USE_KQUEUE 0
141	#endif	202	#endif
142		203
143	#ifndef EV_USE_PORT	204	#ifndef EV_USE_PORT
144	# define EV_USE_PORT 0	205	# define EV_USE_PORT 0
145	#endif	206	#endif
146		207
147	/**/	208	#ifndef EV_USE_INOTIFY
148		209	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
149	/* darwin simply cannot be helped */	210	# define EV_USE_INOTIFY 1
150	#ifdef __APPLE__	211	# else
151	# undef EV_USE_POLL	212	# define EV_USE_INOTIFY 0
152	# undef EV_USE_KQUEUE
153	#endif	213	# endif
		214	#endif
		215
		216	#ifndef EV_PID_HASHSIZE
		217	# if EV_MINIMAL
		218	# define EV_PID_HASHSIZE 1
		219	# else
		220	# define EV_PID_HASHSIZE 16
		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	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
154		241
155	#ifndef CLOCK_MONOTONIC	242	#ifndef CLOCK_MONOTONIC
156	# undef EV_USE_MONOTONIC	243	# undef EV_USE_MONOTONIC
157	# define EV_USE_MONOTONIC 0	244	# define EV_USE_MONOTONIC 0
158	#endif	245	#endif
…		…
160	#ifndef CLOCK_REALTIME	247	#ifndef CLOCK_REALTIME
161	# undef EV_USE_REALTIME	248	# undef EV_USE_REALTIME
162	# define EV_USE_REALTIME 0	249	# define EV_USE_REALTIME 0
163	#endif	250	#endif
164		251
		252	#if !EV_STAT_ENABLE
		253	# undef EV_USE_INOTIFY
		254	# define EV_USE_INOTIFY 0
		255	#endif
		256
		257	#if !EV_USE_NANOSLEEP
		258	# ifndef _WIN32
		259	# include <sys/select.h>
		260	# endif
		261	#endif
		262
		263	#if EV_USE_INOTIFY
		264	# include <sys/inotify.h>
		265	#endif
		266
165	#if EV_SELECT_IS_WINSOCKET	267	#if EV_SELECT_IS_WINSOCKET
166	# include <winsock.h>	268	# include <winsock.h>
167	#endif	269	#endif
168		270
		271	#if EV_USE_EVENTFD
		272	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		273	# include <stdint.h>
		274	# ifdef __cplusplus
		275	extern "C" {
		276	# endif
		277	int eventfd (unsigned int initval, int flags);
		278	# ifdef __cplusplus
		279	}
		280	# endif
		281	#endif
		282
169	/**/	283	/**/
		284
		285	/*
		286	* This is used to avoid floating point rounding problems.
		287	* It is added to ev_rt_now when scheduling periodics
		288	* to ensure progress, time-wise, even when rounding
		289	* errors are against us.
		290	* This value is good at least till the year 4000.
		291	* Better solutions welcome.
		292	*/
		293	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
170		294
171	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	295	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
172	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	296	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
173	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
174	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */	297	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
175		298
176	#ifdef EV_H
177	# include EV_H
178	#else
179	# include "ev.h"
180	#endif
181
182	#if __GNUC__ >= 3	299	#if __GNUC__ >= 4
183	# define expect(expr,value) __builtin_expect ((expr),(value))	300	# define expect(expr,value) __builtin_expect ((expr),(value))
184	# define inline static inline	301	# define noinline __attribute__ ((noinline))
185	#else	302	#else
186	# define expect(expr,value) (expr)	303	# define expect(expr,value) (expr)
187	# define inline static	304	# define noinline
		305	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
		306	# define inline
		307	# endif
188	#endif	308	#endif
189		309
190	#define expect_false(expr) expect ((expr) != 0, 0)	310	#define expect_false(expr) expect ((expr) != 0, 0)
191	#define expect_true(expr) expect ((expr) != 0, 1)	311	#define expect_true(expr) expect ((expr) != 0, 1)
		312	#define inline_size static inline
		313
		314	#if EV_MINIMAL
		315	# define inline_speed static noinline
		316	#else
		317	# define inline_speed static inline
		318	#endif
192		319
193	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	320	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
194	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	321	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
195		322
196	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	323	#define EMPTY /* required for microsofts broken pseudo-c compiler */
197	#define EMPTY2(a,b) /* used to suppress some warnings */	324	#define EMPTY2(a,b) /* used to suppress some warnings */
198		325
199	typedef struct ev_watcher *W;	326	typedef ev_watcher *W;
200	typedef struct ev_watcher_list *WL;	327	typedef ev_watcher_list *WL;
201	typedef struct ev_watcher_time *WT;	328	typedef ev_watcher_time *WT;
202		329
		330	#define ev_active(w) ((W)(w))->active
		331	#define ev_at(w) ((WT)(w))->at
		332
		333	#if EV_USE_MONOTONIC
		334	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		335	/* giving it a reasonably high chance of working on typical architetcures */
203	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	336	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		337	#endif
204		338
205	#ifdef _WIN32	339	#ifdef _WIN32
206	# include "ev_win32.c"	340	# include "ev_win32.c"
207	#endif	341	#endif
208		342
209	/*****************************************************************************/	343	/*****************************************************************************/
210		344
211	static void (*syserr_cb)(const char *msg);	345	static void (*syserr_cb)(const char *msg);
212		346
		347	void
213	void ev_set_syserr_cb (void (*cb)(const char *msg))	348	ev_set_syserr_cb (void (*cb)(const char *msg))
214	{	349	{
215	syserr_cb = cb;	350	syserr_cb = cb;
216	}	351	}
217		352
218	static void	353	static void noinline
219	syserr (const char *msg)	354	syserr (const char *msg)
220	{	355	{
221	if (!msg)	356	if (!msg)
222	msg = "(libev) system error";	357	msg = "(libev) system error";
223		358
…		…
228	perror (msg);	363	perror (msg);
229	abort ();	364	abort ();
230	}	365	}
231	}	366	}
232		367
		368	static void *
		369	ev_realloc_emul (void *ptr, long size)
		370	{
		371	/* some systems, notably openbsd and darwin, fail to properly
		372	* implement realloc (x, 0) (as required by both ansi c-98 and
		373	* the single unix specification, so work around them here.
		374	*/
		375
		376	if (size)
		377	return realloc (ptr, size);
		378
		379	free (ptr);
		380	return 0;
		381	}
		382
233	static void *(*alloc)(void *ptr, long size);	383	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
234		384
		385	void
235	void ev_set_allocator (void *(*cb)(void *ptr, long size))	386	ev_set_allocator (void *(*cb)(void *ptr, long size))
236	{	387	{
237	alloc = cb;	388	alloc = cb;
238	}	389	}
239		390
240	static void *	391	inline_speed void *
241	ev_realloc (void *ptr, long size)	392	ev_realloc (void *ptr, long size)
242	{	393	{
243	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	394	ptr = alloc (ptr, size);
244		395
245	if (!ptr && size)	396	if (!ptr && size)
246	{	397	{
247	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	398	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
248	abort ();	399	abort ();
…		…
269	typedef struct	420	typedef struct
270	{	421	{
271	W w;	422	W w;
272	int events;	423	int events;
273	} ANPENDING;	424	} ANPENDING;
		425
		426	#if EV_USE_INOTIFY
		427	/* hash table entry per inotify-id */
		428	typedef struct
		429	{
		430	WL head;
		431	} ANFS;
		432	#endif
		433
		434	/* Heap Entry */
		435	#define EV_HEAP_CACHE_AT 0
		436	#if EV_HEAP_CACHE_AT
		437	typedef struct {
		438	WT w;
		439	ev_tstamp at;
		440	} ANHE;
		441
		442	#define ANHE_w(he) (he).w /* access watcher, read-write */
		443	#define ANHE_at(he) (he).at /* access cached at, read-only */
		444	#define ANHE_at_set(he) (he).at = (he).w->at /* update at from watcher */
		445	#else
		446	typedef WT ANHE;
		447
		448	#define ANHE_w(he) (he)
		449	#define ANHE_at(he) (he)->at
		450	#define ANHE_at_set(he)
		451	#endif
274		452
275	#if EV_MULTIPLICITY	453	#if EV_MULTIPLICITY
276		454
277	struct ev_loop	455	struct ev_loop
278	{	456	{
…		…
312	gettimeofday (&tv, 0);	490	gettimeofday (&tv, 0);
313	return tv.tv_sec + tv.tv_usec * 1e-6;	491	return tv.tv_sec + tv.tv_usec * 1e-6;
314	#endif	492	#endif
315	}	493	}
316		494
317	inline ev_tstamp	495	ev_tstamp inline_size
318	get_clock (void)	496	get_clock (void)
319	{	497	{
320	#if EV_USE_MONOTONIC	498	#if EV_USE_MONOTONIC
321	if (expect_true (have_monotonic))	499	if (expect_true (have_monotonic))
322	{	500	{
…		…
335	{	513	{
336	return ev_rt_now;	514	return ev_rt_now;
337	}	515	}
338	#endif	516	#endif
339		517
340	#define array_roundsize(type,n) (((n) | 4) & ~3)	518	void
		519	ev_sleep (ev_tstamp delay)
		520	{
		521	if (delay > 0.)
		522	{
		523	#if EV_USE_NANOSLEEP
		524	struct timespec ts;
		525
		526	ts.tv_sec = (time_t)delay;
		527	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		528
		529	nanosleep (&ts, 0);
		530	#elif defined(_WIN32)
		531	Sleep ((unsigned long)(delay * 1e3));
		532	#else
		533	struct timeval tv;
		534
		535	tv.tv_sec = (time_t)delay;
		536	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		537
		538	select (0, 0, 0, 0, &tv);
		539	#endif
		540	}
		541	}
		542
		543	/*****************************************************************************/
		544
		545	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		546
		547	int inline_size
		548	array_nextsize (int elem, int cur, int cnt)
		549	{
		550	int ncur = cur + 1;
		551
		552	do
		553	ncur <<= 1;
		554	while (cnt > ncur);
		555
		556	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
		557	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
		558	{
		559	ncur *= elem;
		560	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
		561	ncur = ncur - sizeof (void *) * 4;
		562	ncur /= elem;
		563	}
		564
		565	return ncur;
		566	}
		567
		568	static noinline void *
		569	array_realloc (int elem, void *base, int *cur, int cnt)
		570	{
		571	*cur = array_nextsize (elem, *cur, cnt);
		572	return ev_realloc (base, elem * *cur);
		573	}
341		574
342	#define array_needsize(type,base,cur,cnt,init) \	575	#define array_needsize(type,base,cur,cnt,init) \
343	if (expect_false ((cnt) > cur)) \	576	if (expect_false ((cnt) > (cur))) \
344	{ \	577	{ \
345	int newcnt = cur; \	578	int ocur_ = (cur); \
346	do \	579	(base) = (type *)array_realloc \
347	{ \	580	(sizeof (type), (base), &(cur), (cnt)); \
348	newcnt = array_roundsize (type, newcnt << 1); \	581	init ((base) + (ocur_), (cur) - ocur_); \
349	} \
350	while ((cnt) > newcnt); \
351	\
352	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
353	init (base + cur, newcnt - cur); \
354	cur = newcnt; \
355	}	582	}
356		583
		584	#if 0
357	#define array_slim(type,stem) \	585	#define array_slim(type,stem) \
358	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	586	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
359	{ \	587	{ \
360	stem ## max = array_roundsize (stem ## cnt >> 1); \	588	stem ## max = array_roundsize (stem ## cnt >> 1); \
361	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	589	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
362	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	590	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
363	}	591	}
		592	#endif
364		593
365	#define array_free(stem, idx) \	594	#define array_free(stem, idx) \
366	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	595	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
367		596
368	/*****************************************************************************/	597	/*****************************************************************************/
369		598
370	static void	599	void noinline
		600	ev_feed_event (EV_P_ void *w, int revents)
		601	{
		602	W w_ = (W)w;
		603	int pri = ABSPRI (w_);
		604
		605	if (expect_false (w_->pending))
		606	pendings [pri][w_->pending - 1].events |= revents;
		607	else
		608	{
		609	w_->pending = ++pendingcnt [pri];
		610	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		611	pendings [pri][w_->pending - 1].w = w_;
		612	pendings [pri][w_->pending - 1].events = revents;
		613	}
		614	}
		615
		616	void inline_speed
		617	queue_events (EV_P_ W *events, int eventcnt, int type)
		618	{
		619	int i;
		620
		621	for (i = 0; i < eventcnt; ++i)
		622	ev_feed_event (EV_A_ events [i], type);
		623	}
		624
		625	/*****************************************************************************/
		626
		627	void inline_size
371	anfds_init (ANFD *base, int count)	628	anfds_init (ANFD *base, int count)
372	{	629	{
373	while (count--)	630	while (count--)
374	{	631	{
375	base->head = 0;	632	base->head = 0;
…		…
378		635
379	++base;	636	++base;
380	}	637	}
381	}	638	}
382		639
383	void	640	void inline_speed
384	ev_feed_event (EV_P_ void *w, int revents)
385	{
386	W w_ = (W)w;
387
388	if (expect_false (w_->pending))
389	{
390	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
391	return;
392	}
393
394	w_->pending = ++pendingcnt [ABSPRI (w_)];
395	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
396	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
397	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
398	}
399
400	static void
401	queue_events (EV_P_ W *events, int eventcnt, int type)
402	{
403	int i;
404
405	for (i = 0; i < eventcnt; ++i)
406	ev_feed_event (EV_A_ events [i], type);
407	}
408
409	inline void
410	fd_event (EV_P_ int fd, int revents)	641	fd_event (EV_P_ int fd, int revents)
411	{	642	{
412	ANFD *anfd = anfds + fd;	643	ANFD *anfd = anfds + fd;
413	struct ev_io *w;	644	ev_io *w;
414		645
415	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	646	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
416	{	647	{
417	int ev = w->events & revents;	648	int ev = w->events & revents;
418		649
419	if (ev)	650	if (ev)
420	ev_feed_event (EV_A_ (W)w, ev);	651	ev_feed_event (EV_A_ (W)w, ev);
…		…
422	}	653	}
423		654
424	void	655	void
425	ev_feed_fd_event (EV_P_ int fd, int revents)	656	ev_feed_fd_event (EV_P_ int fd, int revents)
426	{	657	{
		658	if (fd >= 0 && fd < anfdmax)
427	fd_event (EV_A_ fd, revents);	659	fd_event (EV_A_ fd, revents);
428	}	660	}
429		661
430	/*****************************************************************************/	662	void inline_size
431
432	inline void
433	fd_reify (EV_P)	663	fd_reify (EV_P)
434	{	664	{
435	int i;	665	int i;
436		666
437	for (i = 0; i < fdchangecnt; ++i)	667	for (i = 0; i < fdchangecnt; ++i)
438	{	668	{
439	int fd = fdchanges [i];	669	int fd = fdchanges [i];
440	ANFD *anfd = anfds + fd;	670	ANFD *anfd = anfds + fd;
441	struct ev_io *w;	671	ev_io *w;
442		672
443	int events = 0;	673	unsigned char events = 0;
444		674
445	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	675	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
446	events |= w->events;	676	events |= (unsigned char)w->events;
447		677
448	#if EV_SELECT_IS_WINSOCKET	678	#if EV_SELECT_IS_WINSOCKET
449	if (events)	679	if (events)
450	{	680	{
451	unsigned long argp;	681	unsigned long argp;
		682	#ifdef EV_FD_TO_WIN32_HANDLE
		683	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		684	#else
452	anfd->handle = _get_osfhandle (fd);	685	anfd->handle = _get_osfhandle (fd);
		686	#endif
453	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	687	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
454	}	688	}
455	#endif	689	#endif
456		690
		691	{
		692	unsigned char o_events = anfd->events;
		693	unsigned char o_reify = anfd->reify;
		694
457	anfd->reify = 0;	695	anfd->reify = 0;
458
459	method_modify (EV_A_ fd, anfd->events, events);
460	anfd->events = events;	696	anfd->events = events;
		697
		698	if (o_events != events || o_reify & EV_IOFDSET)
		699	backend_modify (EV_A_ fd, o_events, events);
		700	}
461	}	701	}
462		702
463	fdchangecnt = 0;	703	fdchangecnt = 0;
464	}	704	}
465		705
466	static void	706	void inline_size
467	fd_change (EV_P_ int fd)	707	fd_change (EV_P_ int fd, int flags)
468	{	708	{
469	if (expect_false (anfds [fd].reify))	709	unsigned char reify = anfds [fd].reify;
470	return;
471
472	anfds [fd].reify = 1;	710	anfds [fd].reify |= flags;
473		711
		712	if (expect_true (!reify))
		713	{
474	++fdchangecnt;	714	++fdchangecnt;
475	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	715	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
476	fdchanges [fdchangecnt - 1] = fd;	716	fdchanges [fdchangecnt - 1] = fd;
		717	}
477	}	718	}
478		719
479	static void	720	void inline_speed
480	fd_kill (EV_P_ int fd)	721	fd_kill (EV_P_ int fd)
481	{	722	{
482	struct ev_io *w;	723	ev_io *w;
483		724
484	while ((w = (struct ev_io *)anfds [fd].head))	725	while ((w = (ev_io *)anfds [fd].head))
485	{	726	{
486	ev_io_stop (EV_A_ w);	727	ev_io_stop (EV_A_ w);
487	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	728	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
488	}	729	}
489	}	730	}
490		731
491	inline int	732	int inline_size
492	fd_valid (int fd)	733	fd_valid (int fd)
493	{	734	{
494	#ifdef _WIN32	735	#ifdef _WIN32
495	return _get_osfhandle (fd) != -1;	736	return _get_osfhandle (fd) != -1;
496	#else	737	#else
497	return fcntl (fd, F_GETFD) != -1;	738	return fcntl (fd, F_GETFD) != -1;
498	#endif	739	#endif
499	}	740	}
500		741
501	/* called on EBADF to verify fds */	742	/* called on EBADF to verify fds */
502	static void	743	static void noinline
503	fd_ebadf (EV_P)	744	fd_ebadf (EV_P)
504	{	745	{
505	int fd;	746	int fd;
506		747
507	for (fd = 0; fd < anfdmax; ++fd)	748	for (fd = 0; fd < anfdmax; ++fd)
…		…
509	if (!fd_valid (fd) == -1 && errno == EBADF)	750	if (!fd_valid (fd) == -1 && errno == EBADF)
510	fd_kill (EV_A_ fd);	751	fd_kill (EV_A_ fd);
511	}	752	}
512		753
513	/* called on ENOMEM in select/poll to kill some fds and retry */	754	/* called on ENOMEM in select/poll to kill some fds and retry */
514	static void	755	static void noinline
515	fd_enomem (EV_P)	756	fd_enomem (EV_P)
516	{	757	{
517	int fd;	758	int fd;
518		759
519	for (fd = anfdmax; fd--; )	760	for (fd = anfdmax; fd--; )
…		…
522	fd_kill (EV_A_ fd);	763	fd_kill (EV_A_ fd);
523	return;	764	return;
524	}	765	}
525	}	766	}
526		767
527	/* usually called after fork if method needs to re-arm all fds from scratch */	768	/* usually called after fork if backend needs to re-arm all fds from scratch */
528	static void	769	static void noinline
529	fd_rearm_all (EV_P)	770	fd_rearm_all (EV_P)
530	{	771	{
531	int fd;	772	int fd;
532		773
533	/* this should be highly optimised to not do anything but set a flag */
534	for (fd = 0; fd < anfdmax; ++fd)	774	for (fd = 0; fd < anfdmax; ++fd)
535	if (anfds [fd].events)	775	if (anfds [fd].events)
536	{	776	{
537	anfds [fd].events = 0;	777	anfds [fd].events = 0;
538	fd_change (EV_A_ fd);	778	fd_change (EV_A_ fd, EV_IOFDSET | 1);
539	}	779	}
540	}	780	}
541		781
542	/*****************************************************************************/	782	/*****************************************************************************/
543		783
544	static void	784	/*
		785	* the heap functions want a real array index. array index 0 uis guaranteed to not
		786	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		787	* the branching factor of the d-tree.
		788	*/
		789
		790	/*
		791	* at the moment we allow libev the luxury of two heaps,
		792	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		793	* which is more cache-efficient.
		794	* the difference is about 5% with 50000+ watchers.
		795	*/
		796	#define EV_USE_4HEAP !EV_MINIMAL
		797	#if EV_USE_4HEAP
		798
		799	#define DHEAP 4
		800	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		801
		802	/* towards the root */
		803	void inline_speed
545	upheap (WT *heap, int k)	804	upheap (ANHE *heap, int k)
546	{	805	{
547	WT w = heap [k];	806	ANHE he = heap [k];
548		807
549	while (k && heap [k >> 1]->at > w->at)	808	for (;;)
550	{	809	{
		810	int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
		811
		812	if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
		813	break;
		814
551	heap [k] = heap [k >> 1];	815	heap [k] = heap [p];
552	((W)heap [k])->active = k + 1;	816	ev_active (ANHE_w (heap [k])) = k;
553	k >>= 1;	817	k = p;
		818	}
		819
		820	ev_active (ANHE_w (he)) = k;
		821	heap [k] = he;
		822	}
		823
		824	/* away from the root */
		825	void inline_speed
		826	downheap (ANHE *heap, int N, int k)
		827	{
		828	ANHE he = heap [k];
		829	ANHE *E = heap + N + HEAP0;
		830
		831	for (;;)
		832	{
		833	ev_tstamp minat;
		834	ANHE *minpos;
		835	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0;
		836
		837	// find minimum child
		838	if (expect_true (pos + DHEAP - 1 < E))
		839	{
		840	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		841	if (ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		842	if (ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		843	if (ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		844	}
		845	else if (pos < E)
		846	{
		847	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		848	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		849	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		850	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		851	}
		852	else
		853	break;
		854
		855	if (ANHE_at (he) <= minat)
		856	break;
		857
		858	ev_active (ANHE_w (*minpos)) = k;
		859	heap [k] = *minpos;
		860
		861	k = minpos - heap;
		862	}
		863
		864	ev_active (ANHE_w (he)) = k;
		865	heap [k] = he;
		866	}
		867
		868	#else // 4HEAP
		869
		870	#define HEAP0 1
		871
		872	/* towards the root */
		873	void inline_speed
		874	upheap (ANHE *heap, int k)
		875	{
		876	ANHE he = heap [k];
		877
		878	for (;;)
		879	{
		880	int p = k >> 1;
		881
		882	/* maybe we could use a dummy element at heap [0]? */
		883	if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
		884	break;
		885
		886	heap [k] = heap [p];
		887	ev_active (ANHE_w (heap [k])) = k;
		888	k = p;
554	}	889	}
555		890
556	heap [k] = w;	891	heap [k] = w;
557	((W)heap [k])->active = k + 1;	892	ev_active (ANHE_w (heap [k])) = k;
558
559	}	893	}
560		894
561	static void	895	/* away from the root */
		896	void inline_speed
562	downheap (WT *heap, int N, int k)	897	downheap (ANHE *heap, int N, int k)
563	{	898	{
564	WT w = heap [k];	899	ANHE he = heap [k];
565		900
566	while (k < (N >> 1))	901	for (;;)
567	{	902	{
568	int j = k << 1;	903	int c = k << 1;
569		904
570	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	905	if (c > N)
571	++j;
572
573	if (w->at <= heap [j]->at)
574	break;	906	break;
575		907
		908	c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		909	? 1 : 0;
		910
		911	if (w->at <= ANHE_at (heap [c]))
		912	break;
		913
576	heap [k] = heap [j];	914	heap [k] = heap [c];
577	((W)heap [k])->active = k + 1;	915	ev_active (ANHE_w (heap [k])) = k;
		916
578	k = j;	917	k = c;
579	}	918	}
580		919
581	heap [k] = w;	920	heap [k] = he;
582	((W)heap [k])->active = k + 1;	921	ev_active (ANHE_w (he)) = k;
583	}	922	}
		923	#endif
584		924
585	inline void	925	void inline_size
586	adjustheap (WT *heap, int N, int k)	926	adjustheap (ANHE *heap, int N, int k)
587	{	927	{
588	upheap (heap, k);	928	upheap (heap, k);
589	downheap (heap, N, k);	929	downheap (heap, N, k);
590	}	930	}
591		931
592	/*****************************************************************************/	932	/*****************************************************************************/
593		933
594	typedef struct	934	typedef struct
595	{	935	{
596	WL head;	936	WL head;
597	sig_atomic_t volatile gotsig;	937	EV_ATOMIC_T gotsig;
598	} ANSIG;	938	} ANSIG;
599		939
600	static ANSIG *signals;	940	static ANSIG *signals;
601	static int signalmax;	941	static int signalmax;
602		942
603	static int sigpipe [2];	943	static EV_ATOMIC_T gotsig;
604	static sig_atomic_t volatile gotsig;
605	static struct ev_io sigev;
606		944
607	static void	945	void inline_size
608	signals_init (ANSIG *base, int count)	946	signals_init (ANSIG *base, int count)
609	{	947	{
610	while (count--)	948	while (count--)
611	{	949	{
612	base->head = 0;	950	base->head = 0;
…		…
614		952
615	++base;	953	++base;
616	}	954	}
617	}	955	}
618		956
619	static void	957	/*****************************************************************************/
620	sighandler (int signum)
621	{
622	#if _WIN32
623	signal (signum, sighandler);
624	#endif
625		958
626	signals [signum - 1].gotsig = 1;	959	void inline_speed
627
628	if (!gotsig)
629	{
630	int old_errno = errno;
631	gotsig = 1;
632	write (sigpipe [1], &signum, 1);
633	errno = old_errno;
634	}
635	}
636
637	void
638	ev_feed_signal_event (EV_P_ int signum)
639	{
640	WL w;
641
642	#if EV_MULTIPLICITY
643	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
644	#endif
645
646	--signum;
647
648	if (signum < 0 || signum >= signalmax)
649	return;
650
651	signals [signum].gotsig = 0;
652
653	for (w = signals [signum].head; w; w = w->next)
654	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
655	}
656
657	static void
658	sigcb (EV_P_ struct ev_io *iow, int revents)
659	{
660	int signum;
661
662	read (sigpipe [0], &revents, 1);
663	gotsig = 0;
664
665	for (signum = signalmax; signum--; )
666	if (signals [signum].gotsig)
667	ev_feed_signal_event (EV_A_ signum + 1);
668	}
669
670	static void
671	fd_intern (int fd)	960	fd_intern (int fd)
672	{	961	{
673	#ifdef _WIN32	962	#ifdef _WIN32
674	int arg = 1;	963	int arg = 1;
675	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	964	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
677	fcntl (fd, F_SETFD, FD_CLOEXEC);	966	fcntl (fd, F_SETFD, FD_CLOEXEC);
678	fcntl (fd, F_SETFL, O_NONBLOCK);	967	fcntl (fd, F_SETFL, O_NONBLOCK);
679	#endif	968	#endif
680	}	969	}
681		970
		971	static void noinline
		972	evpipe_init (EV_P)
		973	{
		974	if (!ev_is_active (&pipeev))
		975	{
		976	#if EV_USE_EVENTFD
		977	if ((evfd = eventfd (0, 0)) >= 0)
		978	{
		979	evpipe [0] = -1;
		980	fd_intern (evfd);
		981	ev_io_set (&pipeev, evfd, EV_READ);
		982	}
		983	else
		984	#endif
		985	{
		986	while (pipe (evpipe))
		987	syserr ("(libev) error creating signal/async pipe");
		988
		989	fd_intern (evpipe [0]);
		990	fd_intern (evpipe [1]);
		991	ev_io_set (&pipeev, evpipe [0], EV_READ);
		992	}
		993
		994	ev_io_start (EV_A_ &pipeev);
		995	ev_unref (EV_A); /* watcher should not keep loop alive */
		996	}
		997	}
		998
		999	void inline_size
		1000	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		1001	{
		1002	if (!*flag)
		1003	{
		1004	int old_errno = errno; /* save errno because write might clobber it */
		1005
		1006	*flag = 1;
		1007
		1008	#if EV_USE_EVENTFD
		1009	if (evfd >= 0)
		1010	{
		1011	uint64_t counter = 1;
		1012	write (evfd, &counter, sizeof (uint64_t));
		1013	}
		1014	else
		1015	#endif
		1016	write (evpipe [1], &old_errno, 1);
		1017
		1018	errno = old_errno;
		1019	}
		1020	}
		1021
682	static void	1022	static void
683	siginit (EV_P)	1023	pipecb (EV_P_ ev_io *iow, int revents)
684	{	1024	{
685	fd_intern (sigpipe [0]);	1025	#if EV_USE_EVENTFD
686	fd_intern (sigpipe [1]);	1026	if (evfd >= 0)
		1027	{
		1028	uint64_t counter;
		1029	read (evfd, &counter, sizeof (uint64_t));
		1030	}
		1031	else
		1032	#endif
		1033	{
		1034	char dummy;
		1035	read (evpipe [0], &dummy, 1);
		1036	}
687		1037
688	ev_io_set (&sigev, sigpipe [0], EV_READ);	1038	if (gotsig && ev_is_default_loop (EV_A))
689	ev_io_start (EV_A_ &sigev);	1039	{
690	ev_unref (EV_A); /* child watcher should not keep loop alive */	1040	int signum;
		1041	gotsig = 0;
		1042
		1043	for (signum = signalmax; signum--; )
		1044	if (signals [signum].gotsig)
		1045	ev_feed_signal_event (EV_A_ signum + 1);
		1046	}
		1047
		1048	#if EV_ASYNC_ENABLE
		1049	if (gotasync)
		1050	{
		1051	int i;
		1052	gotasync = 0;
		1053
		1054	for (i = asynccnt; i--; )
		1055	if (asyncs [i]->sent)
		1056	{
		1057	asyncs [i]->sent = 0;
		1058	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		1059	}
		1060	}
		1061	#endif
691	}	1062	}
692		1063
693	/*****************************************************************************/	1064	/*****************************************************************************/
694		1065
695	static struct ev_child *childs [PID_HASHSIZE];	1066	static void
		1067	ev_sighandler (int signum)
		1068	{
		1069	#if EV_MULTIPLICITY
		1070	struct ev_loop *loop = &default_loop_struct;
		1071	#endif
		1072
		1073	#if _WIN32
		1074	signal (signum, ev_sighandler);
		1075	#endif
		1076
		1077	signals [signum - 1].gotsig = 1;
		1078	evpipe_write (EV_A_ &gotsig);
		1079	}
		1080
		1081	void noinline
		1082	ev_feed_signal_event (EV_P_ int signum)
		1083	{
		1084	WL w;
		1085
		1086	#if EV_MULTIPLICITY
		1087	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		1088	#endif
		1089
		1090	--signum;
		1091
		1092	if (signum < 0 || signum >= signalmax)
		1093	return;
		1094
		1095	signals [signum].gotsig = 0;
		1096
		1097	for (w = signals [signum].head; w; w = w->next)
		1098	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		1099	}
		1100
		1101	/*****************************************************************************/
		1102
		1103	static WL childs [EV_PID_HASHSIZE];
696		1104
697	#ifndef _WIN32	1105	#ifndef _WIN32
698		1106
699	static struct ev_signal childev;	1107	static ev_signal childev;
		1108
		1109	#ifndef WIFCONTINUED
		1110	# define WIFCONTINUED(status) 0
		1111	#endif
		1112
		1113	void inline_speed
		1114	child_reap (EV_P_ int chain, int pid, int status)
		1115	{
		1116	ev_child *w;
		1117	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
		1118
		1119	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1120	{
		1121	if ((w->pid == pid || !w->pid)
		1122	&& (!traced || (w->flags & 1)))
		1123	{
		1124	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
		1125	w->rpid = pid;
		1126	w->rstatus = status;
		1127	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		1128	}
		1129	}
		1130	}
700		1131
701	#ifndef WCONTINUED	1132	#ifndef WCONTINUED
702	# define WCONTINUED 0	1133	# define WCONTINUED 0
703	#endif	1134	#endif
704		1135
705	static void	1136	static void
706	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
707	{
708	struct ev_child *w;
709
710	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
711	if (w->pid == pid || !w->pid)
712	{
713	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
714	w->rpid = pid;
715	w->rstatus = status;
716	ev_feed_event (EV_A_ (W)w, EV_CHILD);
717	}
718	}
719
720	static void
721	childcb (EV_P_ struct ev_signal *sw, int revents)	1137	childcb (EV_P_ ev_signal *sw, int revents)
722	{	1138	{
723	int pid, status;	1139	int pid, status;
724		1140
		1141	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
725	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	1142	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
726	{	1143	if (!WCONTINUED
		1144	|| errno != EINVAL
		1145	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		1146	return;
		1147
727	/* make sure we are called again until all childs have been reaped */	1148	/* make sure we are called again until all children have been reaped */
		1149	/* we need to do it this way so that the callback gets called before we continue */
728	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1150	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
729		1151
730	child_reap (EV_A_ sw, pid, pid, status);	1152	child_reap (EV_A_ pid, pid, status);
		1153	if (EV_PID_HASHSIZE > 1)
731	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	1154	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
732	}
733	}	1155	}
734		1156
735	#endif	1157	#endif
736		1158
737	/*****************************************************************************/	1159	/*****************************************************************************/
…		…
763	{	1185	{
764	return EV_VERSION_MINOR;	1186	return EV_VERSION_MINOR;
765	}	1187	}
766		1188
767	/* return true if we are running with elevated privileges and should ignore env variables */	1189	/* return true if we are running with elevated privileges and should ignore env variables */
768	static int	1190	int inline_size
769	enable_secure (void)	1191	enable_secure (void)
770	{	1192	{
771	#ifdef _WIN32	1193	#ifdef _WIN32
772	return 0;	1194	return 0;
773	#else	1195	#else
…		…
775	|| getgid () != getegid ();	1197	|| getgid () != getegid ();
776	#endif	1198	#endif
777	}	1199	}
778		1200
779	unsigned int	1201	unsigned int
780	ev_method (EV_P)	1202	ev_supported_backends (void)
781	{	1203	{
782	return method;	1204	unsigned int flags = 0;
783	}
784		1205
785	static void	1206	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		1207	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		1208	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		1209	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		1210	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		1211
		1212	return flags;
		1213	}
		1214
		1215	unsigned int
		1216	ev_recommended_backends (void)
		1217	{
		1218	unsigned int flags = ev_supported_backends ();
		1219
		1220	#ifndef __NetBSD__
		1221	/* kqueue is borked on everything but netbsd apparently */
		1222	/* it usually doesn't work correctly on anything but sockets and pipes */
		1223	flags &= ~EVBACKEND_KQUEUE;
		1224	#endif
		1225	#ifdef __APPLE__
		1226	// flags &= ~EVBACKEND_KQUEUE; for documentation
		1227	flags &= ~EVBACKEND_POLL;
		1228	#endif
		1229
		1230	return flags;
		1231	}
		1232
		1233	unsigned int
		1234	ev_embeddable_backends (void)
		1235	{
		1236	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
		1237
		1238	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1239	/* please fix it and tell me how to detect the fix */
		1240	flags &= ~EVBACKEND_EPOLL;
		1241
		1242	return flags;
		1243	}
		1244
		1245	unsigned int
		1246	ev_backend (EV_P)
		1247	{
		1248	return backend;
		1249	}
		1250
		1251	unsigned int
		1252	ev_loop_count (EV_P)
		1253	{
		1254	return loop_count;
		1255	}
		1256
		1257	void
		1258	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1259	{
		1260	io_blocktime = interval;
		1261	}
		1262
		1263	void
		1264	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1265	{
		1266	timeout_blocktime = interval;
		1267	}
		1268
		1269	static void noinline
786	loop_init (EV_P_ unsigned int flags)	1270	loop_init (EV_P_ unsigned int flags)
787	{	1271	{
788	if (!method)	1272	if (!backend)
789	{	1273	{
790	#if EV_USE_MONOTONIC	1274	#if EV_USE_MONOTONIC
791	{	1275	{
792	struct timespec ts;	1276	struct timespec ts;
793	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1277	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
794	have_monotonic = 1;	1278	have_monotonic = 1;
795	}	1279	}
796	#endif	1280	#endif
797		1281
798	ev_rt_now = ev_time ();	1282	ev_rt_now = ev_time ();
799	mn_now = get_clock ();	1283	mn_now = get_clock ();
800	now_floor = mn_now;	1284	now_floor = mn_now;
801	rtmn_diff = ev_rt_now - mn_now;	1285	rtmn_diff = ev_rt_now - mn_now;
802		1286
803	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))	1287	io_blocktime = 0.;
		1288	timeout_blocktime = 0.;
		1289	backend = 0;
		1290	backend_fd = -1;
		1291	gotasync = 0;
		1292	#if EV_USE_INOTIFY
		1293	fs_fd = -2;
		1294	#endif
		1295
		1296	/* pid check not overridable via env */
		1297	#ifndef _WIN32
		1298	if (flags & EVFLAG_FORKCHECK)
		1299	curpid = getpid ();
		1300	#endif
		1301
		1302	if (!(flags & EVFLAG_NOENV)
		1303	&& !enable_secure ()
		1304	&& getenv ("LIBEV_FLAGS"))
804	flags = atoi (getenv ("LIBEV_FLAGS"));	1305	flags = atoi (getenv ("LIBEV_FLAGS"));
805		1306
806	if (!(flags & 0x0000ffff))	1307	if (!(flags & 0x0000ffffU))
807	flags |= 0x0000ffff;	1308	flags |= ev_recommended_backends ();
808		1309
809	method = 0;
810	#if EV_USE_PORT	1310	#if EV_USE_PORT
811	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);	1311	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
812	#endif	1312	#endif
813	#if EV_USE_KQUEUE	1313	#if EV_USE_KQUEUE
814	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);	1314	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
815	#endif	1315	#endif
816	#if EV_USE_EPOLL	1316	#if EV_USE_EPOLL
817	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);	1317	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
818	#endif	1318	#endif
819	#if EV_USE_POLL	1319	#if EV_USE_POLL
820	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);	1320	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
821	#endif	1321	#endif
822	#if EV_USE_SELECT	1322	#if EV_USE_SELECT
823	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);	1323	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
824	#endif	1324	#endif
825		1325
826	ev_init (&sigev, sigcb);	1326	ev_init (&pipeev, pipecb);
827	ev_set_priority (&sigev, EV_MAXPRI);	1327	ev_set_priority (&pipeev, EV_MAXPRI);
828	}	1328	}
829	}	1329	}
830		1330
831	static void	1331	static void noinline
832	loop_destroy (EV_P)	1332	loop_destroy (EV_P)
833	{	1333	{
834	int i;	1334	int i;
835		1335
		1336	if (ev_is_active (&pipeev))
		1337	{
		1338	ev_ref (EV_A); /* signal watcher */
		1339	ev_io_stop (EV_A_ &pipeev);
		1340
		1341	#if EV_USE_EVENTFD
		1342	if (evfd >= 0)
		1343	close (evfd);
		1344	#endif
		1345
		1346	if (evpipe [0] >= 0)
		1347	{
		1348	close (evpipe [0]);
		1349	close (evpipe [1]);
		1350	}
		1351	}
		1352
		1353	#if EV_USE_INOTIFY
		1354	if (fs_fd >= 0)
		1355	close (fs_fd);
		1356	#endif
		1357
		1358	if (backend_fd >= 0)
		1359	close (backend_fd);
		1360
836	#if EV_USE_PORT	1361	#if EV_USE_PORT
837	if (method == EVMETHOD_PORT ) port_destroy (EV_A);	1362	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
838	#endif	1363	#endif
839	#if EV_USE_KQUEUE	1364	#if EV_USE_KQUEUE
840	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	1365	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
841	#endif	1366	#endif
842	#if EV_USE_EPOLL	1367	#if EV_USE_EPOLL
843	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	1368	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
844	#endif	1369	#endif
845	#if EV_USE_POLL	1370	#if EV_USE_POLL
846	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1371	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
847	#endif	1372	#endif
848	#if EV_USE_SELECT	1373	#if EV_USE_SELECT
849	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1374	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
850	#endif	1375	#endif
851		1376
852	for (i = NUMPRI; i--; )	1377	for (i = NUMPRI; i--; )
		1378	{
853	array_free (pending, [i]);	1379	array_free (pending, [i]);
		1380	#if EV_IDLE_ENABLE
		1381	array_free (idle, [i]);
		1382	#endif
		1383	}
		1384
		1385	ev_free (anfds); anfdmax = 0;
854		1386
855	/* have to use the microsoft-never-gets-it-right macro */	1387	/* have to use the microsoft-never-gets-it-right macro */
856	array_free (fdchange, EMPTY0);	1388	array_free (fdchange, EMPTY);
857	array_free (timer, EMPTY0);	1389	array_free (timer, EMPTY);
858	#if EV_PERIODICS	1390	#if EV_PERIODIC_ENABLE
859	array_free (periodic, EMPTY0);	1391	array_free (periodic, EMPTY);
860	#endif	1392	#endif
		1393	#if EV_FORK_ENABLE
861	array_free (idle, EMPTY0);	1394	array_free (fork, EMPTY);
		1395	#endif
862	array_free (prepare, EMPTY0);	1396	array_free (prepare, EMPTY);
863	array_free (check, EMPTY0);	1397	array_free (check, EMPTY);
		1398	#if EV_ASYNC_ENABLE
		1399	array_free (async, EMPTY);
		1400	#endif
864		1401
865	method = 0;	1402	backend = 0;
866	}	1403	}
867		1404
868	static void	1405	#if EV_USE_INOTIFY
		1406	void inline_size infy_fork (EV_P);
		1407	#endif
		1408
		1409	void inline_size
869	loop_fork (EV_P)	1410	loop_fork (EV_P)
870	{	1411	{
871	#if EV_USE_PORT	1412	#if EV_USE_PORT
872	if (method == EVMETHOD_PORT ) port_fork (EV_A);	1413	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
873	#endif	1414	#endif
874	#if EV_USE_KQUEUE	1415	#if EV_USE_KQUEUE
875	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1416	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
876	#endif	1417	#endif
877	#if EV_USE_EPOLL	1418	#if EV_USE_EPOLL
878	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1419	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
879	#endif	1420	#endif
		1421	#if EV_USE_INOTIFY
		1422	infy_fork (EV_A);
		1423	#endif
880		1424
881	if (ev_is_active (&sigev))	1425	if (ev_is_active (&pipeev))
882	{	1426	{
883	/* default loop */	1427	/* this "locks" the handlers against writing to the pipe */
		1428	/* while we modify the fd vars */
		1429	gotsig = 1;
		1430	#if EV_ASYNC_ENABLE
		1431	gotasync = 1;
		1432	#endif
884		1433
885	ev_ref (EV_A);	1434	ev_ref (EV_A);
886	ev_io_stop (EV_A_ &sigev);	1435	ev_io_stop (EV_A_ &pipeev);
		1436
		1437	#if EV_USE_EVENTFD
		1438	if (evfd >= 0)
		1439	close (evfd);
		1440	#endif
		1441
		1442	if (evpipe [0] >= 0)
		1443	{
887	close (sigpipe [0]);	1444	close (evpipe [0]);
888	close (sigpipe [1]);	1445	close (evpipe [1]);
		1446	}
889		1447
890	while (pipe (sigpipe))
891	syserr ("(libev) error creating pipe");
892
893	siginit (EV_A);	1448	evpipe_init (EV_A);
		1449	/* now iterate over everything, in case we missed something */
		1450	pipecb (EV_A_ &pipeev, EV_READ);
894	}	1451	}
895		1452
896	postfork = 0;	1453	postfork = 0;
897	}	1454	}
898		1455
…		…
904		1461
905	memset (loop, 0, sizeof (struct ev_loop));	1462	memset (loop, 0, sizeof (struct ev_loop));
906		1463
907	loop_init (EV_A_ flags);	1464	loop_init (EV_A_ flags);
908		1465
909	if (ev_method (EV_A))	1466	if (ev_backend (EV_A))
910	return loop;	1467	return loop;
911		1468
912	return 0;	1469	return 0;
913	}	1470	}
914		1471
…		…
920	}	1477	}
921		1478
922	void	1479	void
923	ev_loop_fork (EV_P)	1480	ev_loop_fork (EV_P)
924	{	1481	{
925	postfork = 1;	1482	postfork = 1; /* must be in line with ev_default_fork */
926	}	1483	}
927
928	#endif	1484	#endif
929		1485
930	#if EV_MULTIPLICITY	1486	#if EV_MULTIPLICITY
931	struct ev_loop *	1487	struct ev_loop *
932	ev_default_loop_init (unsigned int flags)	1488	ev_default_loop_init (unsigned int flags)
933	#else	1489	#else
934	int	1490	int
935	ev_default_loop (unsigned int flags)	1491	ev_default_loop (unsigned int flags)
936	#endif	1492	#endif
937	{	1493	{
938	if (sigpipe [0] == sigpipe [1])
939	if (pipe (sigpipe))
940	return 0;
941
942	if (!ev_default_loop_ptr)	1494	if (!ev_default_loop_ptr)
943	{	1495	{
944	#if EV_MULTIPLICITY	1496	#if EV_MULTIPLICITY
945	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1497	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
946	#else	1498	#else
947	ev_default_loop_ptr = 1;	1499	ev_default_loop_ptr = 1;
948	#endif	1500	#endif
949		1501
950	loop_init (EV_A_ flags);	1502	loop_init (EV_A_ flags);
951		1503
952	if (ev_method (EV_A))	1504	if (ev_backend (EV_A))
953	{	1505	{
954	siginit (EV_A);
955
956	#ifndef _WIN32	1506	#ifndef _WIN32
957	ev_signal_init (&childev, childcb, SIGCHLD);	1507	ev_signal_init (&childev, childcb, SIGCHLD);
958	ev_set_priority (&childev, EV_MAXPRI);	1508	ev_set_priority (&childev, EV_MAXPRI);
959	ev_signal_start (EV_A_ &childev);	1509	ev_signal_start (EV_A_ &childev);
960	ev_unref (EV_A); /* child watcher should not keep loop alive */	1510	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
977	#ifndef _WIN32	1527	#ifndef _WIN32
978	ev_ref (EV_A); /* child watcher */	1528	ev_ref (EV_A); /* child watcher */
979	ev_signal_stop (EV_A_ &childev);	1529	ev_signal_stop (EV_A_ &childev);
980	#endif	1530	#endif
981		1531
982	ev_ref (EV_A); /* signal watcher */
983	ev_io_stop (EV_A_ &sigev);
984
985	close (sigpipe [0]); sigpipe [0] = 0;
986	close (sigpipe [1]); sigpipe [1] = 0;
987
988	loop_destroy (EV_A);	1532	loop_destroy (EV_A);
989	}	1533	}
990		1534
991	void	1535	void
992	ev_default_fork (void)	1536	ev_default_fork (void)
993	{	1537	{
994	#if EV_MULTIPLICITY	1538	#if EV_MULTIPLICITY
995	struct ev_loop *loop = ev_default_loop_ptr;	1539	struct ev_loop *loop = ev_default_loop_ptr;
996	#endif	1540	#endif
997		1541
998	if (method)	1542	if (backend)
999	postfork = 1;	1543	postfork = 1; /* must be in line with ev_loop_fork */
1000	}	1544	}
1001		1545
1002	/*****************************************************************************/	1546	/*****************************************************************************/
1003		1547
1004	static int	1548	void
1005	any_pending (EV_P)	1549	ev_invoke (EV_P_ void *w, int revents)
1006	{	1550	{
1007	int pri;	1551	EV_CB_INVOKE ((W)w, revents);
1008
1009	for (pri = NUMPRI; pri--; )
1010	if (pendingcnt [pri])
1011	return 1;
1012
1013	return 0;
1014	}	1552	}
1015		1553
1016	inline void	1554	void inline_speed
1017	call_pending (EV_P)	1555	call_pending (EV_P)
1018	{	1556	{
1019	int pri;	1557	int pri;
1020		1558
1021	for (pri = NUMPRI; pri--; )	1559	for (pri = NUMPRI; pri--; )
…		…
1023	{	1561	{
1024	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1562	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1025		1563
1026	if (expect_true (p->w))	1564	if (expect_true (p->w))
1027	{	1565	{
		1566	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1567
1028	p->w->pending = 0;	1568	p->w->pending = 0;
1029	EV_CB_INVOKE (p->w, p->events);	1569	EV_CB_INVOKE (p->w, p->events);
1030	}	1570	}
1031	}	1571	}
1032	}	1572	}
1033		1573
1034	inline void	1574	#if EV_IDLE_ENABLE
		1575	void inline_size
		1576	idle_reify (EV_P)
		1577	{
		1578	if (expect_false (idleall))
		1579	{
		1580	int pri;
		1581
		1582	for (pri = NUMPRI; pri--; )
		1583	{
		1584	if (pendingcnt [pri])
		1585	break;
		1586
		1587	if (idlecnt [pri])
		1588	{
		1589	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1590	break;
		1591	}
		1592	}
		1593	}
		1594	}
		1595	#endif
		1596
		1597	void inline_size
1035	timers_reify (EV_P)	1598	timers_reify (EV_P)
1036	{	1599	{
1037	while (timercnt && ((WT)timers [0])->at <= mn_now)	1600	while (timercnt && ANHE_at (timers [HEAP0]) <= mn_now)
1038	{	1601	{
1039	struct ev_timer *w = timers [0];	1602	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
1040		1603
1041	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1604	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1042		1605
1043	/* first reschedule or stop timer */	1606	/* first reschedule or stop timer */
1044	if (w->repeat)	1607	if (w->repeat)
1045	{	1608	{
1046	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1609	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1047		1610
1048	((WT)w)->at += w->repeat;	1611	ev_at (w) += w->repeat;
1049	if (((WT)w)->at < mn_now)	1612	if (ev_at (w) < mn_now)
1050	((WT)w)->at = mn_now;	1613	ev_at (w) = mn_now;
1051		1614
		1615	ANHE_at_set (timers [HEAP0]);
1052	downheap ((WT *)timers, timercnt, 0);	1616	downheap (timers, timercnt, HEAP0);
1053	}	1617	}
1054	else	1618	else
1055	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1619	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1056		1620
1057	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1621	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1058	}	1622	}
1059	}	1623	}
1060		1624
1061	#if EV_PERIODICS	1625	#if EV_PERIODIC_ENABLE
1062	inline void	1626	void inline_size
1063	periodics_reify (EV_P)	1627	periodics_reify (EV_P)
1064	{	1628	{
1065	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1629	while (periodiccnt && ANHE_at (periodics [HEAP0]) <= ev_rt_now)
1066	{	1630	{
1067	struct ev_periodic *w = periodics [0];	1631	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
1068		1632
1069	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1633	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1070		1634
1071	/* first reschedule or stop timer */	1635	/* first reschedule or stop timer */
1072	if (w->reschedule_cb)	1636	if (w->reschedule_cb)
1073	{	1637	{
1074	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1638	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1075	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1639	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
		1640	ANHE_at_set (periodics [HEAP0]);
1076	downheap ((WT *)periodics, periodiccnt, 0);	1641	downheap (periodics, periodiccnt, HEAP0);
1077	}	1642	}
1078	else if (w->interval)	1643	else if (w->interval)
1079	{	1644	{
1080	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1645	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1646	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1081	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1647	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
		1648	ANHE_at_set (periodics [HEAP0]);
1082	downheap ((WT *)periodics, periodiccnt, 0);	1649	downheap (periodics, periodiccnt, HEAP0);
1083	}	1650	}
1084	else	1651	else
1085	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1652	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1086		1653
1087	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1654	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1088	}	1655	}
1089	}	1656	}
1090		1657
1091	static void	1658	static void noinline
1092	periodics_reschedule (EV_P)	1659	periodics_reschedule (EV_P)
1093	{	1660	{
1094	int i;	1661	int i;
1095		1662
1096	/* adjust periodics after time jump */	1663	/* adjust periodics after time jump */
1097	for (i = 0; i < periodiccnt; ++i)	1664	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
1098	{	1665	{
1099	struct ev_periodic *w = periodics [i];	1666	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1100		1667
1101	if (w->reschedule_cb)	1668	if (w->reschedule_cb)
1102	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1669	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1103	else if (w->interval)	1670	else if (w->interval)
1104	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1671	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1105	}
1106		1672
1107	/* now rebuild the heap */	1673	ANHE_at_set (periodics [i]);
		1674	}
		1675
		1676	/* now rebuild the heap, this for the 2-heap, inefficient for the 4-heap, but correct */
1108	for (i = periodiccnt >> 1; i--; )	1677	for (i = periodiccnt >> 1; --i; )
1109	downheap ((WT *)periodics, periodiccnt, i);	1678	downheap (periodics, periodiccnt, i + HEAP0);
1110	}	1679	}
1111	#endif	1680	#endif
1112		1681
1113	inline int	1682	void inline_speed
1114	time_update_monotonic (EV_P)	1683	time_update (EV_P_ ev_tstamp max_block)
1115	{	1684	{
		1685	int i;
		1686
		1687	#if EV_USE_MONOTONIC
		1688	if (expect_true (have_monotonic))
		1689	{
		1690	ev_tstamp odiff = rtmn_diff;
		1691
1116	mn_now = get_clock ();	1692	mn_now = get_clock ();
1117		1693
		1694	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1695	/* interpolate in the meantime */
1118	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1696	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1119	{	1697	{
1120	ev_rt_now = rtmn_diff + mn_now;	1698	ev_rt_now = rtmn_diff + mn_now;
1121	return 0;	1699	return;
1122	}	1700	}
1123	else	1701
1124	{
1125	now_floor = mn_now;	1702	now_floor = mn_now;
1126	ev_rt_now = ev_time ();	1703	ev_rt_now = ev_time ();
1127	return 1;
1128	}
1129	}
1130		1704
1131	inline void	1705	/* loop a few times, before making important decisions.
1132	time_update (EV_P)	1706	* on the choice of "4": one iteration isn't enough,
1133	{	1707	* in case we get preempted during the calls to
1134	int i;	1708	* ev_time and get_clock. a second call is almost guaranteed
1135		1709	* to succeed in that case, though. and looping a few more times
1136	#if EV_USE_MONOTONIC	1710	* doesn't hurt either as we only do this on time-jumps or
1137	if (expect_true (have_monotonic))	1711	* in the unlikely event of having been preempted here.
1138	{	1712	*/
1139	if (time_update_monotonic (EV_A))	1713	for (i = 4; --i; )
1140	{	1714	{
1141	ev_tstamp odiff = rtmn_diff;	1715	rtmn_diff = ev_rt_now - mn_now;
1142		1716
1143	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1717	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
		1718	return; /* all is well */
		1719
		1720	ev_rt_now = ev_time ();
		1721	mn_now = get_clock ();
		1722	now_floor = mn_now;
		1723	}
		1724
		1725	# if EV_PERIODIC_ENABLE
		1726	periodics_reschedule (EV_A);
		1727	# endif
		1728	/* no timer adjustment, as the monotonic clock doesn't jump */
		1729	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1730	}
		1731	else
		1732	#endif
		1733	{
		1734	ev_rt_now = ev_time ();
		1735
		1736	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1737	{
		1738	#if EV_PERIODIC_ENABLE
		1739	periodics_reschedule (EV_A);
		1740	#endif
		1741	/* adjust timers. this is easy, as the offset is the same for all of them */
		1742	for (i = 0; i < timercnt; ++i)
1144	{	1743	{
1145	rtmn_diff = ev_rt_now - mn_now;	1744	ANHE *he = timers + i + HEAP0;
1146		1745	ANHE_w (*he)->at += ev_rt_now - mn_now;
1147	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1746	ANHE_at_set (*he);
1148	return; /* all is well */
1149
1150	ev_rt_now = ev_time ();
1151	mn_now = get_clock ();
1152	now_floor = mn_now;
1153	}	1747	}
1154
1155	# if EV_PERIODICS
1156	periodics_reschedule (EV_A);
1157	# endif
1158	/* no timer adjustment, as the monotonic clock doesn't jump */
1159	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1160	}	1748	}
1161	}
1162	else
1163	#endif
1164	{
1165	ev_rt_now = ev_time ();
1166
1167	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1168	{
1169	#if EV_PERIODICS
1170	periodics_reschedule (EV_A);
1171	#endif
1172
1173	/* adjust timers. this is easy, as the offset is the same for all */
1174	for (i = 0; i < timercnt; ++i)
1175	((WT)timers [i])->at += ev_rt_now - mn_now;
1176	}
1177		1749
1178	mn_now = ev_rt_now;	1750	mn_now = ev_rt_now;
1179	}	1751	}
1180	}	1752	}
1181		1753
…		…
1194	static int loop_done;	1766	static int loop_done;
1195		1767
1196	void	1768	void
1197	ev_loop (EV_P_ int flags)	1769	ev_loop (EV_P_ int flags)
1198	{	1770	{
1199	double block;	1771	loop_done = EVUNLOOP_CANCEL;
1200	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
1201		1772
1202	while (activecnt)	1773	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1774
		1775	do
1203	{	1776	{
		1777	#ifndef _WIN32
		1778	if (expect_false (curpid)) /* penalise the forking check even more */
		1779	if (expect_false (getpid () != curpid))
		1780	{
		1781	curpid = getpid ();
		1782	postfork = 1;
		1783	}
		1784	#endif
		1785
		1786	#if EV_FORK_ENABLE
		1787	/* we might have forked, so queue fork handlers */
		1788	if (expect_false (postfork))
		1789	if (forkcnt)
		1790	{
		1791	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1792	call_pending (EV_A);
		1793	}
		1794	#endif
		1795
1204	/* queue check watchers (and execute them) */	1796	/* queue prepare watchers (and execute them) */
1205	if (expect_false (preparecnt))	1797	if (expect_false (preparecnt))
1206	{	1798	{
1207	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1799	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1208	call_pending (EV_A);	1800	call_pending (EV_A);
1209	}	1801	}
1210		1802
		1803	if (expect_false (!activecnt))
		1804	break;
		1805
1211	/* we might have forked, so reify kernel state if necessary */	1806	/* we might have forked, so reify kernel state if necessary */
1212	if (expect_false (postfork))	1807	if (expect_false (postfork))
1213	loop_fork (EV_A);	1808	loop_fork (EV_A);
1214		1809
1215	/* update fd-related kernel structures */	1810	/* update fd-related kernel structures */
1216	fd_reify (EV_A);	1811	fd_reify (EV_A);
1217		1812
1218	/* calculate blocking time */	1813	/* calculate blocking time */
		1814	{
		1815	ev_tstamp waittime = 0.;
		1816	ev_tstamp sleeptime = 0.;
1219		1817
1220	/* we only need this for !monotonic clock or timers, but as we basically	1818	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1221	always have timers, we just calculate it always */
1222	#if EV_USE_MONOTONIC
1223	if (expect_true (have_monotonic))
1224	time_update_monotonic (EV_A);
1225	else
1226	#endif
1227	{	1819	{
1228	ev_rt_now = ev_time ();	1820	/* update time to cancel out callback processing overhead */
1229	mn_now = ev_rt_now;	1821	time_update (EV_A_ 1e100);
1230	}
1231		1822
1232	if (flags & EVLOOP_NONBLOCK || idlecnt)
1233	block = 0.;
1234	else
1235	{
1236	block = MAX_BLOCKTIME;	1823	waittime = MAX_BLOCKTIME;
1237		1824
1238	if (timercnt)	1825	if (timercnt)
1239	{	1826	{
1240	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1827	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1241	if (block > to) block = to;	1828	if (waittime > to) waittime = to;
1242	}	1829	}
1243		1830
1244	#if EV_PERIODICS	1831	#if EV_PERIODIC_ENABLE
1245	if (periodiccnt)	1832	if (periodiccnt)
1246	{	1833	{
1247	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1834	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1248	if (block > to) block = to;	1835	if (waittime > to) waittime = to;
1249	}	1836	}
1250	#endif	1837	#endif
1251		1838
1252	if (expect_false (block < 0.)) block = 0.;	1839	if (expect_false (waittime < timeout_blocktime))
		1840	waittime = timeout_blocktime;
		1841
		1842	sleeptime = waittime - backend_fudge;
		1843
		1844	if (expect_true (sleeptime > io_blocktime))
		1845	sleeptime = io_blocktime;
		1846
		1847	if (sleeptime)
		1848	{
		1849	ev_sleep (sleeptime);
		1850	waittime -= sleeptime;
		1851	}
1253	}	1852	}
1254		1853
1255	method_poll (EV_A_ block);	1854	++loop_count;
		1855	backend_poll (EV_A_ waittime);
1256		1856
1257	/* update ev_rt_now, do magic */	1857	/* update ev_rt_now, do magic */
1258	time_update (EV_A);	1858	time_update (EV_A_ waittime + sleeptime);
		1859	}
1259		1860
1260	/* queue pending timers and reschedule them */	1861	/* queue pending timers and reschedule them */
1261	timers_reify (EV_A); /* relative timers called last */	1862	timers_reify (EV_A); /* relative timers called last */
1262	#if EV_PERIODICS	1863	#if EV_PERIODIC_ENABLE
1263	periodics_reify (EV_A); /* absolute timers called first */	1864	periodics_reify (EV_A); /* absolute timers called first */
1264	#endif	1865	#endif
1265		1866
		1867	#if EV_IDLE_ENABLE
1266	/* queue idle watchers unless io or timers are pending */	1868	/* queue idle watchers unless other events are pending */
1267	if (idlecnt && !any_pending (EV_A))	1869	idle_reify (EV_A);
1268	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1870	#endif
1269		1871
1270	/* queue check watchers, to be executed first */	1872	/* queue check watchers, to be executed first */
1271	if (expect_false (checkcnt))	1873	if (expect_false (checkcnt))
1272	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1874	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1273		1875
1274	call_pending (EV_A);	1876	call_pending (EV_A);
1275
1276	if (expect_false (loop_done))
1277	break;
1278	}	1877	}
		1878	while (expect_true (
		1879	activecnt
		1880	&& !loop_done
		1881	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		1882	));
1279		1883
1280	if (loop_done != 2)	1884	if (loop_done == EVUNLOOP_ONE)
1281	loop_done = 0;	1885	loop_done = EVUNLOOP_CANCEL;
1282	}	1886	}
1283		1887
1284	void	1888	void
1285	ev_unloop (EV_P_ int how)	1889	ev_unloop (EV_P_ int how)
1286	{	1890	{
1287	loop_done = how;	1891	loop_done = how;
1288	}	1892	}
1289		1893
1290	/*****************************************************************************/	1894	/*****************************************************************************/
1291		1895
1292	inline void	1896	void inline_size
1293	wlist_add (WL *head, WL elem)	1897	wlist_add (WL *head, WL elem)
1294	{	1898	{
1295	elem->next = *head;	1899	elem->next = *head;
1296	*head = elem;	1900	*head = elem;
1297	}	1901	}
1298		1902
1299	inline void	1903	void inline_size
1300	wlist_del (WL *head, WL elem)	1904	wlist_del (WL *head, WL elem)
1301	{	1905	{
1302	while (*head)	1906	while (*head)
1303	{	1907	{
1304	if (*head == elem)	1908	if (*head == elem)
…		…
1309		1913
1310	head = &(*head)->next;	1914	head = &(*head)->next;
1311	}	1915	}
1312	}	1916	}
1313		1917
1314	inline void	1918	void inline_speed
1315	ev_clear_pending (EV_P_ W w)	1919	clear_pending (EV_P_ W w)
1316	{	1920	{
1317	if (w->pending)	1921	if (w->pending)
1318	{	1922	{
1319	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1923	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1320	w->pending = 0;	1924	w->pending = 0;
1321	}	1925	}
1322	}	1926	}
1323		1927
1324	inline void	1928	int
		1929	ev_clear_pending (EV_P_ void *w)
		1930	{
		1931	W w_ = (W)w;
		1932	int pending = w_->pending;
		1933
		1934	if (expect_true (pending))
		1935	{
		1936	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1937	w_->pending = 0;
		1938	p->w = 0;
		1939	return p->events;
		1940	}
		1941	else
		1942	return 0;
		1943	}
		1944
		1945	void inline_size
		1946	pri_adjust (EV_P_ W w)
		1947	{
		1948	int pri = w->priority;
		1949	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1950	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1951	w->priority = pri;
		1952	}
		1953
		1954	void inline_speed
1325	ev_start (EV_P_ W w, int active)	1955	ev_start (EV_P_ W w, int active)
1326	{	1956	{
1327	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1957	pri_adjust (EV_A_ w);
1328	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1329
1330	w->active = active;	1958	w->active = active;
1331	ev_ref (EV_A);	1959	ev_ref (EV_A);
1332	}	1960	}
1333		1961
1334	inline void	1962	void inline_size
1335	ev_stop (EV_P_ W w)	1963	ev_stop (EV_P_ W w)
1336	{	1964	{
1337	ev_unref (EV_A);	1965	ev_unref (EV_A);
1338	w->active = 0;	1966	w->active = 0;
1339	}	1967	}
1340		1968
1341	/*****************************************************************************/	1969	/*****************************************************************************/
1342		1970
1343	void	1971	void noinline
1344	ev_io_start (EV_P_ struct ev_io *w)	1972	ev_io_start (EV_P_ ev_io *w)
1345	{	1973	{
1346	int fd = w->fd;	1974	int fd = w->fd;
1347		1975
1348	if (expect_false (ev_is_active (w)))	1976	if (expect_false (ev_is_active (w)))
1349	return;	1977	return;
1350		1978
1351	assert (("ev_io_start called with negative fd", fd >= 0));	1979	assert (("ev_io_start called with negative fd", fd >= 0));
1352		1980
1353	ev_start (EV_A_ (W)w, 1);	1981	ev_start (EV_A_ (W)w, 1);
1354	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1982	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1355	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1983	wlist_add (&anfds[fd].head, (WL)w);
1356		1984
1357	fd_change (EV_A_ fd);	1985	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1986	w->events &= ~EV_IOFDSET;
1358	}	1987	}
1359		1988
1360	void	1989	void noinline
1361	ev_io_stop (EV_P_ struct ev_io *w)	1990	ev_io_stop (EV_P_ ev_io *w)
1362	{	1991	{
1363	ev_clear_pending (EV_A_ (W)w);	1992	clear_pending (EV_A_ (W)w);
1364	if (expect_false (!ev_is_active (w)))	1993	if (expect_false (!ev_is_active (w)))
1365	return;	1994	return;
1366		1995
1367	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1996	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1368		1997
1369	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1998	wlist_del (&anfds[w->fd].head, (WL)w);
1370	ev_stop (EV_A_ (W)w);	1999	ev_stop (EV_A_ (W)w);
1371		2000
1372	fd_change (EV_A_ w->fd);	2001	fd_change (EV_A_ w->fd, 1);
1373	}	2002	}
1374		2003
1375	void	2004	void noinline
1376	ev_timer_start (EV_P_ struct ev_timer *w)	2005	ev_timer_start (EV_P_ ev_timer *w)
1377	{	2006	{
1378	if (expect_false (ev_is_active (w)))	2007	if (expect_false (ev_is_active (w)))
1379	return;	2008	return;
1380		2009
1381	((WT)w)->at += mn_now;	2010	ev_at (w) += mn_now;
1382		2011
1383	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2012	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1384		2013
1385	ev_start (EV_A_ (W)w, ++timercnt);	2014	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);
1386	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);	2015	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1387	timers [timercnt - 1] = w;	2016	ANHE_w (timers [ev_active (w)]) = (WT)w;
1388	upheap ((WT *)timers, timercnt - 1);	2017	ANHE_at_set (timers [ev_active (w)]);
		2018	upheap (timers, ev_active (w));
1389		2019
1390	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	2020	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1391	}	2021	}
1392		2022
1393	void	2023	void noinline
1394	ev_timer_stop (EV_P_ struct ev_timer *w)	2024	ev_timer_stop (EV_P_ ev_timer *w)
1395	{	2025	{
1396	ev_clear_pending (EV_A_ (W)w);	2026	clear_pending (EV_A_ (W)w);
1397	if (expect_false (!ev_is_active (w)))	2027	if (expect_false (!ev_is_active (w)))
1398	return;	2028	return;
1399		2029
		2030	{
		2031	int active = ev_active (w);
		2032
1400	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	2033	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
1401		2034
1402	if (expect_true (((W)w)->active < timercnt--))	2035	if (expect_true (active < timercnt + HEAP0 - 1))
1403	{	2036	{
1404	timers [((W)w)->active - 1] = timers [timercnt];	2037	timers [active] = timers [timercnt + HEAP0 - 1];
1405	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	2038	adjustheap (timers, timercnt, active);
1406	}	2039	}
1407		2040
1408	((WT)w)->at -= mn_now;	2041	--timercnt;
		2042	}
		2043
		2044	ev_at (w) -= mn_now;
1409		2045
1410	ev_stop (EV_A_ (W)w);	2046	ev_stop (EV_A_ (W)w);
1411	}	2047	}
1412		2048
1413	void	2049	void noinline
1414	ev_timer_again (EV_P_ struct ev_timer *w)	2050	ev_timer_again (EV_P_ ev_timer *w)
1415	{	2051	{
1416	if (ev_is_active (w))	2052	if (ev_is_active (w))
1417	{	2053	{
1418	if (w->repeat)	2054	if (w->repeat)
1419	{	2055	{
1420	((WT)w)->at = mn_now + w->repeat;	2056	ev_at (w) = mn_now + w->repeat;
		2057	ANHE_at_set (timers [ev_active (w)]);
1421	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	2058	adjustheap (timers, timercnt, ev_active (w));
1422	}	2059	}
1423	else	2060	else
1424	ev_timer_stop (EV_A_ w);	2061	ev_timer_stop (EV_A_ w);
1425	}	2062	}
1426	else if (w->repeat)	2063	else if (w->repeat)
1427	{	2064	{
1428	w->at = w->repeat;	2065	ev_at (w) = w->repeat;
1429	ev_timer_start (EV_A_ w);	2066	ev_timer_start (EV_A_ w);
1430	}	2067	}
1431	}	2068	}
1432		2069
1433	#if EV_PERIODICS	2070	#if EV_PERIODIC_ENABLE
1434	void	2071	void noinline
1435	ev_periodic_start (EV_P_ struct ev_periodic *w)	2072	ev_periodic_start (EV_P_ ev_periodic *w)
1436	{	2073	{
1437	if (expect_false (ev_is_active (w)))	2074	if (expect_false (ev_is_active (w)))
1438	return;	2075	return;
1439		2076
1440	if (w->reschedule_cb)	2077	if (w->reschedule_cb)
1441	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2078	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1442	else if (w->interval)	2079	else if (w->interval)
1443	{	2080	{
1444	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2081	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1445	/* this formula differs from the one in periodic_reify because we do not always round up */	2082	/* this formula differs from the one in periodic_reify because we do not always round up */
1446	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	2083	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1447	}	2084	}
		2085	else
		2086	ev_at (w) = w->offset;
1448		2087
1449	ev_start (EV_A_ (W)w, ++periodiccnt);	2088	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);
1450	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	2089	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1451	periodics [periodiccnt - 1] = w;	2090	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1452	upheap ((WT *)periodics, periodiccnt - 1);	2091	upheap (periodics, ev_active (w));
1453		2092
1454	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	2093	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1455	}	2094	}
1456		2095
1457	void	2096	void noinline
1458	ev_periodic_stop (EV_P_ struct ev_periodic *w)	2097	ev_periodic_stop (EV_P_ ev_periodic *w)
1459	{	2098	{
1460	ev_clear_pending (EV_A_ (W)w);	2099	clear_pending (EV_A_ (W)w);
1461	if (expect_false (!ev_is_active (w)))	2100	if (expect_false (!ev_is_active (w)))
1462	return;	2101	return;
1463		2102
		2103	{
		2104	int active = ev_active (w);
		2105
1464	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	2106	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
1465		2107
1466	if (expect_true (((W)w)->active < periodiccnt--))	2108	if (expect_true (active < periodiccnt + HEAP0 - 1))
1467	{	2109	{
1468	periodics [((W)w)->active - 1] = periodics [periodiccnt];	2110	periodics [active] = periodics [periodiccnt + HEAP0 - 1];
1469	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	2111	adjustheap (periodics, periodiccnt, active);
1470	}	2112	}
		2113
		2114	--periodiccnt;
		2115	}
1471		2116
1472	ev_stop (EV_A_ (W)w);	2117	ev_stop (EV_A_ (W)w);
1473	}	2118	}
1474		2119
1475	void	2120	void noinline
1476	ev_periodic_again (EV_P_ struct ev_periodic *w)	2121	ev_periodic_again (EV_P_ ev_periodic *w)
1477	{	2122	{
1478	/* TODO: use adjustheap and recalculation */	2123	/* TODO: use adjustheap and recalculation */
1479	ev_periodic_stop (EV_A_ w);	2124	ev_periodic_stop (EV_A_ w);
1480	ev_periodic_start (EV_A_ w);	2125	ev_periodic_start (EV_A_ w);
1481	}	2126	}
1482	#endif	2127	#endif
1483		2128
1484	void	2129	#ifndef SA_RESTART
1485	ev_idle_start (EV_P_ struct ev_idle *w)	2130	# define SA_RESTART 0
		2131	#endif
		2132
		2133	void noinline
		2134	ev_signal_start (EV_P_ ev_signal *w)
1486	{	2135	{
		2136	#if EV_MULTIPLICITY
		2137	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		2138	#endif
1487	if (expect_false (ev_is_active (w)))	2139	if (expect_false (ev_is_active (w)))
1488	return;	2140	return;
1489		2141
1490	ev_start (EV_A_ (W)w, ++idlecnt);
1491	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1492	idles [idlecnt - 1] = w;
1493	}
1494
1495	void
1496	ev_idle_stop (EV_P_ struct ev_idle *w)
1497	{
1498	ev_clear_pending (EV_A_ (W)w);
1499	if (expect_false (!ev_is_active (w)))
1500	return;
1501
1502	idles [((W)w)->active - 1] = idles [--idlecnt];
1503	ev_stop (EV_A_ (W)w);
1504	}
1505
1506	void
1507	ev_prepare_start (EV_P_ struct ev_prepare *w)
1508	{
1509	if (expect_false (ev_is_active (w)))
1510	return;
1511
1512	ev_start (EV_A_ (W)w, ++preparecnt);
1513	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1514	prepares [preparecnt - 1] = w;
1515	}
1516
1517	void
1518	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1519	{
1520	ev_clear_pending (EV_A_ (W)w);
1521	if (expect_false (!ev_is_active (w)))
1522	return;
1523
1524	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1525	ev_stop (EV_A_ (W)w);
1526	}
1527
1528	void
1529	ev_check_start (EV_P_ struct ev_check *w)
1530	{
1531	if (expect_false (ev_is_active (w)))
1532	return;
1533
1534	ev_start (EV_A_ (W)w, ++checkcnt);
1535	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1536	checks [checkcnt - 1] = w;
1537	}
1538
1539	void
1540	ev_check_stop (EV_P_ struct ev_check *w)
1541	{
1542	ev_clear_pending (EV_A_ (W)w);
1543	if (expect_false (!ev_is_active (w)))
1544	return;
1545
1546	checks [((W)w)->active - 1] = checks [--checkcnt];
1547	ev_stop (EV_A_ (W)w);
1548	}
1549
1550	#ifndef SA_RESTART
1551	# define SA_RESTART 0
1552	#endif
1553
1554	void
1555	ev_signal_start (EV_P_ struct ev_signal *w)
1556	{
1557	#if EV_MULTIPLICITY
1558	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1559	#endif
1560	if (expect_false (ev_is_active (w)))
1561	return;
1562
1563	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2142	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1564		2143
		2144	evpipe_init (EV_A);
		2145
		2146	{
		2147	#ifndef _WIN32
		2148	sigset_t full, prev;
		2149	sigfillset (&full);
		2150	sigprocmask (SIG_SETMASK, &full, &prev);
		2151	#endif
		2152
		2153	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		2154
		2155	#ifndef _WIN32
		2156	sigprocmask (SIG_SETMASK, &prev, 0);
		2157	#endif
		2158	}
		2159
1565	ev_start (EV_A_ (W)w, 1);	2160	ev_start (EV_A_ (W)w, 1);
1566	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1567	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2161	wlist_add (&signals [w->signum - 1].head, (WL)w);
1568		2162
1569	if (!((WL)w)->next)	2163	if (!((WL)w)->next)
1570	{	2164	{
1571	#if _WIN32	2165	#if _WIN32
1572	signal (w->signum, sighandler);	2166	signal (w->signum, ev_sighandler);
1573	#else	2167	#else
1574	struct sigaction sa;	2168	struct sigaction sa;
1575	sa.sa_handler = sighandler;	2169	sa.sa_handler = ev_sighandler;
1576	sigfillset (&sa.sa_mask);	2170	sigfillset (&sa.sa_mask);
1577	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2171	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1578	sigaction (w->signum, &sa, 0);	2172	sigaction (w->signum, &sa, 0);
1579	#endif	2173	#endif
1580	}	2174	}
1581	}	2175	}
1582		2176
1583	void	2177	void noinline
1584	ev_signal_stop (EV_P_ struct ev_signal *w)	2178	ev_signal_stop (EV_P_ ev_signal *w)
1585	{	2179	{
1586	ev_clear_pending (EV_A_ (W)w);	2180	clear_pending (EV_A_ (W)w);
1587	if (expect_false (!ev_is_active (w)))	2181	if (expect_false (!ev_is_active (w)))
1588	return;	2182	return;
1589		2183
1590	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2184	wlist_del (&signals [w->signum - 1].head, (WL)w);
1591	ev_stop (EV_A_ (W)w);	2185	ev_stop (EV_A_ (W)w);
1592		2186
1593	if (!signals [w->signum - 1].head)	2187	if (!signals [w->signum - 1].head)
1594	signal (w->signum, SIG_DFL);	2188	signal (w->signum, SIG_DFL);
1595	}	2189	}
1596		2190
1597	void	2191	void
1598	ev_child_start (EV_P_ struct ev_child *w)	2192	ev_child_start (EV_P_ ev_child *w)
1599	{	2193	{
1600	#if EV_MULTIPLICITY	2194	#if EV_MULTIPLICITY
1601	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2195	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1602	#endif	2196	#endif
1603	if (expect_false (ev_is_active (w)))	2197	if (expect_false (ev_is_active (w)))
1604	return;	2198	return;
1605		2199
1606	ev_start (EV_A_ (W)w, 1);	2200	ev_start (EV_A_ (W)w, 1);
1607	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2201	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1608	}	2202	}
1609		2203
1610	void	2204	void
1611	ev_child_stop (EV_P_ struct ev_child *w)	2205	ev_child_stop (EV_P_ ev_child *w)
1612	{	2206	{
1613	ev_clear_pending (EV_A_ (W)w);	2207	clear_pending (EV_A_ (W)w);
1614	if (expect_false (!ev_is_active (w)))	2208	if (expect_false (!ev_is_active (w)))
1615	return;	2209	return;
1616		2210
1617	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2211	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1618	ev_stop (EV_A_ (W)w);	2212	ev_stop (EV_A_ (W)w);
1619	}	2213	}
1620		2214
		2215	#if EV_STAT_ENABLE
		2216
		2217	# ifdef _WIN32
		2218	# undef lstat
		2219	# define lstat(a,b) _stati64 (a,b)
		2220	# endif
		2221
		2222	#define DEF_STAT_INTERVAL 5.0074891
		2223	#define MIN_STAT_INTERVAL 0.1074891
		2224
		2225	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		2226
		2227	#if EV_USE_INOTIFY
		2228	# define EV_INOTIFY_BUFSIZE 8192
		2229
		2230	static void noinline
		2231	infy_add (EV_P_ ev_stat *w)
		2232	{
		2233	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);
		2234
		2235	if (w->wd < 0)
		2236	{
		2237	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		2238
		2239	/* monitor some parent directory for speedup hints */
		2240	/* note that exceeding the hardcoded limit is not a correctness issue, */
		2241	/* but an efficiency issue only */
		2242	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		2243	{
		2244	char path [4096];
		2245	strcpy (path, w->path);
		2246
		2247	do
		2248	{
		2249	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		2250	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		2251
		2252	char *pend = strrchr (path, '/');
		2253
		2254	if (!pend)
		2255	break; /* whoops, no '/', complain to your admin */
		2256
		2257	*pend = 0;
		2258	w->wd = inotify_add_watch (fs_fd, path, mask);
		2259	}
		2260	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		2261	}
		2262	}
		2263	else
		2264	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		2265
		2266	if (w->wd >= 0)
		2267	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2268	}
		2269
		2270	static void noinline
		2271	infy_del (EV_P_ ev_stat *w)
		2272	{
		2273	int slot;
		2274	int wd = w->wd;
		2275
		2276	if (wd < 0)
		2277	return;
		2278
		2279	w->wd = -2;
		2280	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		2281	wlist_del (&fs_hash [slot].head, (WL)w);
		2282
		2283	/* remove this watcher, if others are watching it, they will rearm */
		2284	inotify_rm_watch (fs_fd, wd);
		2285	}
		2286
		2287	static void noinline
		2288	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		2289	{
		2290	if (slot < 0)
		2291	/* overflow, need to check for all hahs slots */
		2292	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2293	infy_wd (EV_A_ slot, wd, ev);
		2294	else
		2295	{
		2296	WL w_;
		2297
		2298	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		2299	{
		2300	ev_stat *w = (ev_stat *)w_;
		2301	w_ = w_->next; /* lets us remove this watcher and all before it */
		2302
		2303	if (w->wd == wd || wd == -1)
		2304	{
		2305	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		2306	{
		2307	w->wd = -1;
		2308	infy_add (EV_A_ w); /* re-add, no matter what */
		2309	}
		2310
		2311	stat_timer_cb (EV_A_ &w->timer, 0);
		2312	}
		2313	}
		2314	}
		2315	}
		2316
		2317	static void
		2318	infy_cb (EV_P_ ev_io *w, int revents)
		2319	{
		2320	char buf [EV_INOTIFY_BUFSIZE];
		2321	struct inotify_event *ev = (struct inotify_event *)buf;
		2322	int ofs;
		2323	int len = read (fs_fd, buf, sizeof (buf));
		2324
		2325	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2326	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2327	}
		2328
		2329	void inline_size
		2330	infy_init (EV_P)
		2331	{
		2332	if (fs_fd != -2)
		2333	return;
		2334
		2335	fs_fd = inotify_init ();
		2336
		2337	if (fs_fd >= 0)
		2338	{
		2339	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2340	ev_set_priority (&fs_w, EV_MAXPRI);
		2341	ev_io_start (EV_A_ &fs_w);
		2342	}
		2343	}
		2344
		2345	void inline_size
		2346	infy_fork (EV_P)
		2347	{
		2348	int slot;
		2349
		2350	if (fs_fd < 0)
		2351	return;
		2352
		2353	close (fs_fd);
		2354	fs_fd = inotify_init ();
		2355
		2356	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2357	{
		2358	WL w_ = fs_hash [slot].head;
		2359	fs_hash [slot].head = 0;
		2360
		2361	while (w_)
		2362	{
		2363	ev_stat *w = (ev_stat *)w_;
		2364	w_ = w_->next; /* lets us add this watcher */
		2365
		2366	w->wd = -1;
		2367
		2368	if (fs_fd >= 0)
		2369	infy_add (EV_A_ w); /* re-add, no matter what */
		2370	else
		2371	ev_timer_start (EV_A_ &w->timer);
		2372	}
		2373
		2374	}
		2375	}
		2376
		2377	#endif
		2378
		2379	void
		2380	ev_stat_stat (EV_P_ ev_stat *w)
		2381	{
		2382	if (lstat (w->path, &w->attr) < 0)
		2383	w->attr.st_nlink = 0;
		2384	else if (!w->attr.st_nlink)
		2385	w->attr.st_nlink = 1;
		2386	}
		2387
		2388	static void noinline
		2389	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2390	{
		2391	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2392
		2393	/* we copy this here each the time so that */
		2394	/* prev has the old value when the callback gets invoked */
		2395	w->prev = w->attr;
		2396	ev_stat_stat (EV_A_ w);
		2397
		2398	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2399	if (
		2400	w->prev.st_dev != w->attr.st_dev
		2401	|| w->prev.st_ino != w->attr.st_ino
		2402	|| w->prev.st_mode != w->attr.st_mode
		2403	|| w->prev.st_nlink != w->attr.st_nlink
		2404	|| w->prev.st_uid != w->attr.st_uid
		2405	|| w->prev.st_gid != w->attr.st_gid
		2406	|| w->prev.st_rdev != w->attr.st_rdev
		2407	|| w->prev.st_size != w->attr.st_size
		2408	|| w->prev.st_atime != w->attr.st_atime
		2409	|| w->prev.st_mtime != w->attr.st_mtime
		2410	|| w->prev.st_ctime != w->attr.st_ctime
		2411	) {
		2412	#if EV_USE_INOTIFY
		2413	infy_del (EV_A_ w);
		2414	infy_add (EV_A_ w);
		2415	ev_stat_stat (EV_A_ w); /* avoid race... */
		2416	#endif
		2417
		2418	ev_feed_event (EV_A_ w, EV_STAT);
		2419	}
		2420	}
		2421
		2422	void
		2423	ev_stat_start (EV_P_ ev_stat *w)
		2424	{
		2425	if (expect_false (ev_is_active (w)))
		2426	return;
		2427
		2428	/* since we use memcmp, we need to clear any padding data etc. */
		2429	memset (&w->prev, 0, sizeof (ev_statdata));
		2430	memset (&w->attr, 0, sizeof (ev_statdata));
		2431
		2432	ev_stat_stat (EV_A_ w);
		2433
		2434	if (w->interval < MIN_STAT_INTERVAL)
		2435	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2436
		2437	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2438	ev_set_priority (&w->timer, ev_priority (w));
		2439
		2440	#if EV_USE_INOTIFY
		2441	infy_init (EV_A);
		2442
		2443	if (fs_fd >= 0)
		2444	infy_add (EV_A_ w);
		2445	else
		2446	#endif
		2447	ev_timer_start (EV_A_ &w->timer);
		2448
		2449	ev_start (EV_A_ (W)w, 1);
		2450	}
		2451
		2452	void
		2453	ev_stat_stop (EV_P_ ev_stat *w)
		2454	{
		2455	clear_pending (EV_A_ (W)w);
		2456	if (expect_false (!ev_is_active (w)))
		2457	return;
		2458
		2459	#if EV_USE_INOTIFY
		2460	infy_del (EV_A_ w);
		2461	#endif
		2462	ev_timer_stop (EV_A_ &w->timer);
		2463
		2464	ev_stop (EV_A_ (W)w);
		2465	}
		2466	#endif
		2467
		2468	#if EV_IDLE_ENABLE
		2469	void
		2470	ev_idle_start (EV_P_ ev_idle *w)
		2471	{
		2472	if (expect_false (ev_is_active (w)))
		2473	return;
		2474
		2475	pri_adjust (EV_A_ (W)w);
		2476
		2477	{
		2478	int active = ++idlecnt [ABSPRI (w)];
		2479
		2480	++idleall;
		2481	ev_start (EV_A_ (W)w, active);
		2482
		2483	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2484	idles [ABSPRI (w)][active - 1] = w;
		2485	}
		2486	}
		2487
		2488	void
		2489	ev_idle_stop (EV_P_ ev_idle *w)
		2490	{
		2491	clear_pending (EV_A_ (W)w);
		2492	if (expect_false (!ev_is_active (w)))
		2493	return;
		2494
		2495	{
		2496	int active = ev_active (w);
		2497
		2498	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2499	ev_active (idles [ABSPRI (w)][active - 1]) = active;
		2500
		2501	ev_stop (EV_A_ (W)w);
		2502	--idleall;
		2503	}
		2504	}
		2505	#endif
		2506
		2507	void
		2508	ev_prepare_start (EV_P_ ev_prepare *w)
		2509	{
		2510	if (expect_false (ev_is_active (w)))
		2511	return;
		2512
		2513	ev_start (EV_A_ (W)w, ++preparecnt);
		2514	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2515	prepares [preparecnt - 1] = w;
		2516	}
		2517
		2518	void
		2519	ev_prepare_stop (EV_P_ ev_prepare *w)
		2520	{
		2521	clear_pending (EV_A_ (W)w);
		2522	if (expect_false (!ev_is_active (w)))
		2523	return;
		2524
		2525	{
		2526	int active = ev_active (w);
		2527
		2528	prepares [active - 1] = prepares [--preparecnt];
		2529	ev_active (prepares [active - 1]) = active;
		2530	}
		2531
		2532	ev_stop (EV_A_ (W)w);
		2533	}
		2534
		2535	void
		2536	ev_check_start (EV_P_ ev_check *w)
		2537	{
		2538	if (expect_false (ev_is_active (w)))
		2539	return;
		2540
		2541	ev_start (EV_A_ (W)w, ++checkcnt);
		2542	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2543	checks [checkcnt - 1] = w;
		2544	}
		2545
		2546	void
		2547	ev_check_stop (EV_P_ ev_check *w)
		2548	{
		2549	clear_pending (EV_A_ (W)w);
		2550	if (expect_false (!ev_is_active (w)))
		2551	return;
		2552
		2553	{
		2554	int active = ev_active (w);
		2555
		2556	checks [active - 1] = checks [--checkcnt];
		2557	ev_active (checks [active - 1]) = active;
		2558	}
		2559
		2560	ev_stop (EV_A_ (W)w);
		2561	}
		2562
		2563	#if EV_EMBED_ENABLE
		2564	void noinline
		2565	ev_embed_sweep (EV_P_ ev_embed *w)
		2566	{
		2567	ev_loop (w->other, EVLOOP_NONBLOCK);
		2568	}
		2569
		2570	static void
		2571	embed_io_cb (EV_P_ ev_io *io, int revents)
		2572	{
		2573	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2574
		2575	if (ev_cb (w))
		2576	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2577	else
		2578	ev_loop (w->other, EVLOOP_NONBLOCK);
		2579	}
		2580
		2581	static void
		2582	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2583	{
		2584	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2585
		2586	{
		2587	struct ev_loop *loop = w->other;
		2588
		2589	while (fdchangecnt)
		2590	{
		2591	fd_reify (EV_A);
		2592	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2593	}
		2594	}
		2595	}
		2596
		2597	#if 0
		2598	static void
		2599	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2600	{
		2601	ev_idle_stop (EV_A_ idle);
		2602	}
		2603	#endif
		2604
		2605	void
		2606	ev_embed_start (EV_P_ ev_embed *w)
		2607	{
		2608	if (expect_false (ev_is_active (w)))
		2609	return;
		2610
		2611	{
		2612	struct ev_loop *loop = w->other;
		2613	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2614	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
		2615	}
		2616
		2617	ev_set_priority (&w->io, ev_priority (w));
		2618	ev_io_start (EV_A_ &w->io);
		2619
		2620	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2621	ev_set_priority (&w->prepare, EV_MINPRI);
		2622	ev_prepare_start (EV_A_ &w->prepare);
		2623
		2624	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2625
		2626	ev_start (EV_A_ (W)w, 1);
		2627	}
		2628
		2629	void
		2630	ev_embed_stop (EV_P_ ev_embed *w)
		2631	{
		2632	clear_pending (EV_A_ (W)w);
		2633	if (expect_false (!ev_is_active (w)))
		2634	return;
		2635
		2636	ev_io_stop (EV_A_ &w->io);
		2637	ev_prepare_stop (EV_A_ &w->prepare);
		2638
		2639	ev_stop (EV_A_ (W)w);
		2640	}
		2641	#endif
		2642
		2643	#if EV_FORK_ENABLE
		2644	void
		2645	ev_fork_start (EV_P_ ev_fork *w)
		2646	{
		2647	if (expect_false (ev_is_active (w)))
		2648	return;
		2649
		2650	ev_start (EV_A_ (W)w, ++forkcnt);
		2651	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2652	forks [forkcnt - 1] = w;
		2653	}
		2654
		2655	void
		2656	ev_fork_stop (EV_P_ ev_fork *w)
		2657	{
		2658	clear_pending (EV_A_ (W)w);
		2659	if (expect_false (!ev_is_active (w)))
		2660	return;
		2661
		2662	{
		2663	int active = ev_active (w);
		2664
		2665	forks [active - 1] = forks [--forkcnt];
		2666	ev_active (forks [active - 1]) = active;
		2667	}
		2668
		2669	ev_stop (EV_A_ (W)w);
		2670	}
		2671	#endif
		2672
		2673	#if EV_ASYNC_ENABLE
		2674	void
		2675	ev_async_start (EV_P_ ev_async *w)
		2676	{
		2677	if (expect_false (ev_is_active (w)))
		2678	return;
		2679
		2680	evpipe_init (EV_A);
		2681
		2682	ev_start (EV_A_ (W)w, ++asynccnt);
		2683	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2684	asyncs [asynccnt - 1] = w;
		2685	}
		2686
		2687	void
		2688	ev_async_stop (EV_P_ ev_async *w)
		2689	{
		2690	clear_pending (EV_A_ (W)w);
		2691	if (expect_false (!ev_is_active (w)))
		2692	return;
		2693
		2694	{
		2695	int active = ev_active (w);
		2696
		2697	asyncs [active - 1] = asyncs [--asynccnt];
		2698	ev_active (asyncs [active - 1]) = active;
		2699	}
		2700
		2701	ev_stop (EV_A_ (W)w);
		2702	}
		2703
		2704	void
		2705	ev_async_send (EV_P_ ev_async *w)
		2706	{
		2707	w->sent = 1;
		2708	evpipe_write (EV_A_ &gotasync);
		2709	}
		2710	#endif
		2711
1621	/*****************************************************************************/	2712	/*****************************************************************************/
1622		2713
1623	struct ev_once	2714	struct ev_once
1624	{	2715	{
1625	struct ev_io io;	2716	ev_io io;
1626	struct ev_timer to;	2717	ev_timer to;
1627	void (*cb)(int revents, void *arg);	2718	void (*cb)(int revents, void *arg);
1628	void *arg;	2719	void *arg;
1629	};	2720	};
1630		2721
1631	static void	2722	static void
…		…
1640		2731
1641	cb (revents, arg);	2732	cb (revents, arg);
1642	}	2733	}
1643		2734
1644	static void	2735	static void
1645	once_cb_io (EV_P_ struct ev_io *w, int revents)	2736	once_cb_io (EV_P_ ev_io *w, int revents)
1646	{	2737	{
1647	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2738	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1648	}	2739	}
1649		2740
1650	static void	2741	static void
1651	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2742	once_cb_to (EV_P_ ev_timer *w, int revents)
1652	{	2743	{
1653	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2744	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1654	}	2745	}
1655		2746
1656	void	2747	void
…		…
1680	ev_timer_set (&once->to, timeout, 0.);	2771	ev_timer_set (&once->to, timeout, 0.);
1681	ev_timer_start (EV_A_ &once->to);	2772	ev_timer_start (EV_A_ &once->to);
1682	}	2773	}
1683	}	2774	}
1684		2775
		2776	#if EV_MULTIPLICITY
		2777	#include "ev_wrap.h"
		2778	#endif
		2779
1685	#ifdef __cplusplus	2780	#ifdef __cplusplus
1686	}	2781	}
1687	#endif	2782	#endif
1688		2783

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