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Comparing libev/ev.c (file contents):
Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC vs.
Revision 1.199 by root, Tue Dec 25 07:05:45 2007 UTC

…		…
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 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	*/
		39
		40	#ifdef __cplusplus
		41	extern "C" {
		42	#endif
		43
31	#ifndef EV_STANDALONE	44	#ifndef EV_STANDALONE
		45	# ifdef EV_CONFIG_H
		46	# include EV_CONFIG_H
		47	# else
32	# include "config.h"	48	# include "config.h"
		49	# endif
		50
		51	# if HAVE_CLOCK_GETTIME
		52	# ifndef EV_USE_MONOTONIC
		53	# define EV_USE_MONOTONIC 1
		54	# endif
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 1
		57	# endif
		58	# else
		59	# ifndef EV_USE_MONOTONIC
		60	# define EV_USE_MONOTONIC 0
		61	# endif
		62	# ifndef EV_USE_REALTIME
		63	# define EV_USE_REALTIME 0
		64	# endif
		65	# endif
		66
		67	# ifndef EV_USE_NANOSLEEP
		68	# if HAVE_NANOSLEEP
		69	# define EV_USE_NANOSLEEP 1
		70	# else
		71	# define EV_USE_NANOSLEEP 0
		72	# endif
		73	# endif
		74
		75	# ifndef EV_USE_SELECT
		76	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		77	# define EV_USE_SELECT 1
		78	# else
		79	# define EV_USE_SELECT 0
		80	# endif
		81	# endif
		82
		83	# ifndef EV_USE_POLL
		84	# if HAVE_POLL && HAVE_POLL_H
		85	# define EV_USE_POLL 1
		86	# else
		87	# define EV_USE_POLL 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_EPOLL
		92	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		93	# define EV_USE_EPOLL 1
		94	# else
		95	# define EV_USE_EPOLL 0
		96	# endif
		97	# endif
		98
		99	# ifndef EV_USE_KQUEUE
		100	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		101	# define EV_USE_KQUEUE 1
		102	# else
		103	# define EV_USE_KQUEUE 0
		104	# endif
		105	# endif
		106
		107	# ifndef EV_USE_PORT
		108	# if HAVE_PORT_H && HAVE_PORT_CREATE
		109	# define EV_USE_PORT 1
		110	# else
		111	# define EV_USE_PORT 0
		112	# endif
		113	# endif
		114
		115	# ifndef EV_USE_INOTIFY
		116	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		117	# define EV_USE_INOTIFY 1
		118	# else
		119	# define EV_USE_INOTIFY 0
		120	# endif
		121	# endif
		122
33	#endif	123	#endif
34		124
35	#include <math.h>	125	#include <math.h>
36	#include <stdlib.h>	126	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	127	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	128	#include <stddef.h>
41		129
42	#include <stdio.h>	130	#include <stdio.h>
43		131
44	#include <assert.h>	132	#include <assert.h>
45	#include <errno.h>	133	#include <errno.h>
46	#include <sys/types.h>	134	#include <sys/types.h>
		135	#include <time.h>
		136
		137	#include <signal.h>
		138
		139	#ifdef EV_H
		140	# include EV_H
		141	#else
		142	# include "ev.h"
		143	#endif
		144
47	#ifndef WIN32	145	#ifndef _WIN32
		146	# include <sys/time.h>
48	# include <sys/wait.h>	147	# include <sys/wait.h>
		148	# include <unistd.h>
		149	#else
		150	# define WIN32_LEAN_AND_MEAN
		151	# include <windows.h>
		152	# ifndef EV_SELECT_IS_WINSOCKET
		153	# define EV_SELECT_IS_WINSOCKET 1
49	#endif	154	# endif
50	#include <sys/time.h>	155	#endif
51	#include <time.h>
52		156
53	/**/	157	/**/
54		158
55	#ifndef EV_USE_MONOTONIC	159	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	160	# define EV_USE_MONOTONIC 0
		161	#endif
		162
		163	#ifndef EV_USE_REALTIME
		164	# define EV_USE_REALTIME 0
		165	#endif
		166
		167	#ifndef EV_USE_NANOSLEEP
		168	# define EV_USE_NANOSLEEP 0
57	#endif	169	#endif
58		170
59	#ifndef EV_USE_SELECT	171	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	172	# define EV_USE_SELECT 1
61	#endif	173	#endif
62		174
63	#ifndef EV_USEV_POLL	175	#ifndef EV_USE_POLL
64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */	176	# ifdef _WIN32
		177	# define EV_USE_POLL 0
		178	# else
		179	# define EV_USE_POLL 1
		180	# endif
65	#endif	181	#endif
66		182
67	#ifndef EV_USE_EPOLL	183	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	184	# define EV_USE_EPOLL 0
69	#endif	185	#endif
70		186
71	#ifndef EV_USE_KQUEUE	187	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	188	# define EV_USE_KQUEUE 0
73	#endif	189	#endif
74		190
75	#ifndef EV_USE_REALTIME	191	#ifndef EV_USE_PORT
76	# define EV_USE_REALTIME 1	192	# define EV_USE_PORT 0
		193	#endif
		194
		195	#ifndef EV_USE_INOTIFY
		196	# define EV_USE_INOTIFY 0
		197	#endif
		198
		199	#ifndef EV_PID_HASHSIZE
		200	# if EV_MINIMAL
		201	# define EV_PID_HASHSIZE 1
		202	# else
		203	# define EV_PID_HASHSIZE 16
		204	# endif
		205	#endif
		206
		207	#ifndef EV_INOTIFY_HASHSIZE
		208	# if EV_MINIMAL
		209	# define EV_INOTIFY_HASHSIZE 1
		210	# else
		211	# define EV_INOTIFY_HASHSIZE 16
		212	# endif
77	#endif	213	#endif
78		214
79	/**/	215	/**/
80		216
81	#ifndef CLOCK_MONOTONIC	217	#ifndef CLOCK_MONOTONIC
…		…
86	#ifndef CLOCK_REALTIME	222	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	223	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	224	# define EV_USE_REALTIME 0
89	#endif	225	#endif
90		226
		227	#if !EV_STAT_ENABLE
		228	# undef EV_USE_INOTIFY
		229	# define EV_USE_INOTIFY 0
		230	#endif
		231
		232	#if !EV_USE_NANOSLEEP
		233	# ifndef _WIN32
		234	# include <sys/select.h>
		235	# endif
		236	#endif
		237
		238	#if EV_USE_INOTIFY
		239	# include <sys/inotify.h>
		240	#endif
		241
		242	#if EV_SELECT_IS_WINSOCKET
		243	# include <winsock.h>
		244	#endif
		245
91	/**/	246	/**/
92		247
		248	/*
		249	* This is used to avoid floating point rounding problems.
		250	* It is added to ev_rt_now when scheduling periodics
		251	* to ensure progress, time-wise, even when rounding
		252	* errors are against us.
		253	* This value is good at least till the year 4000.
		254	* Better solutions welcome.
		255	*/
		256	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
		257
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	258	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	259	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
96	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	260	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
97		261
98	#include "ev.h"
99
100	#if __GNUC__ >= 3	262	#if __GNUC__ >= 4
101	# define expect(expr,value) __builtin_expect ((expr),(value))	263	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	264	# define noinline __attribute__ ((noinline))
103	#else	265	#else
104	# define expect(expr,value) (expr)	266	# define expect(expr,value) (expr)
105	# define inline static	267	# define noinline
		268	# if __STDC_VERSION__ < 199901L
		269	# define inline
		270	# endif
106	#endif	271	#endif
107		272
108	#define expect_false(expr) expect ((expr) != 0, 0)	273	#define expect_false(expr) expect ((expr) != 0, 0)
109	#define expect_true(expr) expect ((expr) != 0, 1)	274	#define expect_true(expr) expect ((expr) != 0, 1)
		275	#define inline_size static inline
		276
		277	#if EV_MINIMAL
		278	# define inline_speed static noinline
		279	#else
		280	# define inline_speed static inline
		281	#endif
110		282
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	283	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	284	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
113		285
		286	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		287	#define EMPTY2(a,b) /* used to suppress some warnings */
		288
114	typedef struct ev_watcher *W;	289	typedef ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	290	typedef ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	291	typedef ev_watcher_time *WT;
117		292
		293	#if EV_USE_MONOTONIC
		294	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		295	/* giving it a reasonably high chance of working on typical architetcures */
118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	296	static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		297	#endif
		298
		299	#ifdef _WIN32
		300	# include "ev_win32.c"
		301	#endif
119		302
120	/*****************************************************************************/	303	/*****************************************************************************/
121		304
		305	static void (*syserr_cb)(const char *msg);
		306
		307	void
		308	ev_set_syserr_cb (void (*cb)(const char *msg))
		309	{
		310	syserr_cb = cb;
		311	}
		312
		313	static void noinline
		314	syserr (const char *msg)
		315	{
		316	if (!msg)
		317	msg = "(libev) system error";
		318
		319	if (syserr_cb)
		320	syserr_cb (msg);
		321	else
		322	{
		323	perror (msg);
		324	abort ();
		325	}
		326	}
		327
		328	static void *(*alloc)(void *ptr, long size);
		329
		330	void
		331	ev_set_allocator (void *(*cb)(void *ptr, long size))
		332	{
		333	alloc = cb;
		334	}
		335
		336	inline_speed void *
		337	ev_realloc (void *ptr, long size)
		338	{
		339	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		340
		341	if (!ptr && size)
		342	{
		343	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		344	abort ();
		345	}
		346
		347	return ptr;
		348	}
		349
		350	#define ev_malloc(size) ev_realloc (0, (size))
		351	#define ev_free(ptr) ev_realloc ((ptr), 0)
		352
		353	/*****************************************************************************/
		354
122	typedef struct	355	typedef struct
123	{	356	{
124	struct ev_watcher_list *head;	357	WL head;
125	unsigned char events;	358	unsigned char events;
126	unsigned char reify;	359	unsigned char reify;
		360	#if EV_SELECT_IS_WINSOCKET
		361	SOCKET handle;
		362	#endif
127	} ANFD;	363	} ANFD;
128		364
129	typedef struct	365	typedef struct
130	{	366	{
131	W w;	367	W w;
132	int events;	368	int events;
133	} ANPENDING;	369	} ANPENDING;
134		370
		371	#if EV_USE_INOTIFY
		372	typedef struct
		373	{
		374	WL head;
		375	} ANFS;
		376	#endif
		377
135	#ifdef EV_MULTIPLICITY	378	#if EV_MULTIPLICITY
136		379
137	struct ev_loop	380	struct ev_loop
138	{	381	{
		382	ev_tstamp ev_rt_now;
		383	#define ev_rt_now ((loop)->ev_rt_now)
139	# define VAR(name,decl) decl;	384	#define VAR(name,decl) decl;
140	# include "ev_vars.h"	385	#include "ev_vars.h"
141	};
142	# undef VAR	386	#undef VAR
		387	};
143	# include "ev_wrap.h"	388	#include "ev_wrap.h"
		389
		390	static struct ev_loop default_loop_struct;
		391	struct ev_loop *ev_default_loop_ptr;
144		392
145	#else	393	#else
146		394
		395	ev_tstamp ev_rt_now;
147	# define VAR(name,decl) static decl;	396	#define VAR(name,decl) static decl;
148	# include "ev_vars.h"	397	#include "ev_vars.h"
149	# undef VAR	398	#undef VAR
		399
		400	static int ev_default_loop_ptr;
150		401
151	#endif	402	#endif
152		403
153	/*****************************************************************************/	404	/*****************************************************************************/
154		405
155	inline ev_tstamp	406	ev_tstamp
156	ev_time (void)	407	ev_time (void)
157	{	408	{
158	#if EV_USE_REALTIME	409	#if EV_USE_REALTIME
159	struct timespec ts;	410	struct timespec ts;
160	clock_gettime (CLOCK_REALTIME, &ts);	411	clock_gettime (CLOCK_REALTIME, &ts);
…		…
164	gettimeofday (&tv, 0);	415	gettimeofday (&tv, 0);
165	return tv.tv_sec + tv.tv_usec * 1e-6;	416	return tv.tv_sec + tv.tv_usec * 1e-6;
166	#endif	417	#endif
167	}	418	}
168		419
169	inline ev_tstamp	420	ev_tstamp inline_size
170	get_clock (void)	421	get_clock (void)
171	{	422	{
172	#if EV_USE_MONOTONIC	423	#if EV_USE_MONOTONIC
173	if (expect_true (have_monotonic))	424	if (expect_true (have_monotonic))
174	{	425	{
…		…
179	#endif	430	#endif
180		431
181	return ev_time ();	432	return ev_time ();
182	}	433	}
183		434
		435	#if EV_MULTIPLICITY
184	ev_tstamp	436	ev_tstamp
185	ev_now (EV_P)	437	ev_now (EV_P)
186	{	438	{
187	return rt_now;	439	return ev_rt_now;
188	}	440	}
		441	#endif
189		442
190	#define array_roundsize(base,n) ((n) | 4 & ~3)	443	void
191		444	ev_sleep (ev_tstamp delay)
192	#define array_needsize(base,cur,cnt,init) \	445	{
193	if (expect_false ((cnt) > cur)) \	446	if (delay > 0.)
194	{ \
195	int newcnt = cur; \
196	do \
197	{ \
198	newcnt = array_roundsize (base, newcnt << 1); \
199	} \
200	while ((cnt) > newcnt); \
201	\
202	base = realloc (base, sizeof (*base) * (newcnt)); \
203	init (base + cur, newcnt - cur); \
204	cur = newcnt; \
205	}	447	{
		448	#if EV_USE_NANOSLEEP
		449	struct timespec ts;
		450
		451	ts.tv_sec = (time_t)delay;
		452	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		453
		454	nanosleep (&ts, 0);
		455	#elif defined(_WIN32)
		456	Sleep (delay * 1e3);
		457	#else
		458	struct timeval tv;
		459
		460	tv.tv_sec = (time_t)delay;
		461	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		462
		463	select (0, 0, 0, 0, &tv);
		464	#endif
		465	}
		466	}
206		467
207	/*****************************************************************************/	468	/*****************************************************************************/
208		469
209	static void	470	int inline_size
		471	array_nextsize (int elem, int cur, int cnt)
		472	{
		473	int ncur = cur + 1;
		474
		475	do
		476	ncur <<= 1;
		477	while (cnt > ncur);
		478
		479	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		480	if (elem * ncur > 4096)
		481	{
		482	ncur *= elem;
		483	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		484	ncur = ncur - sizeof (void *) * 4;
		485	ncur /= elem;
		486	}
		487
		488	return ncur;
		489	}
		490
		491	static noinline void *
		492	array_realloc (int elem, void *base, int *cur, int cnt)
		493	{
		494	*cur = array_nextsize (elem, *cur, cnt);
		495	return ev_realloc (base, elem * *cur);
		496	}
		497
		498	#define array_needsize(type,base,cur,cnt,init) \
		499	if (expect_false ((cnt) > (cur))) \
		500	{ \
		501	int ocur_ = (cur); \
		502	(base) = (type *)array_realloc \
		503	(sizeof (type), (base), &(cur), (cnt)); \
		504	init ((base) + (ocur_), (cur) - ocur_); \
		505	}
		506
		507	#if 0
		508	#define array_slim(type,stem) \
		509	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		510	{ \
		511	stem ## max = array_roundsize (stem ## cnt >> 1); \
		512	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		513	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		514	}
		515	#endif
		516
		517	#define array_free(stem, idx) \
		518	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
		519
		520	/*****************************************************************************/
		521
		522	void noinline
		523	ev_feed_event (EV_P_ void *w, int revents)
		524	{
		525	W w_ = (W)w;
		526	int pri = ABSPRI (w_);
		527
		528	if (expect_false (w_->pending))
		529	pendings [pri][w_->pending - 1].events |= revents;
		530	else
		531	{
		532	w_->pending = ++pendingcnt [pri];
		533	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		534	pendings [pri][w_->pending - 1].w = w_;
		535	pendings [pri][w_->pending - 1].events = revents;
		536	}
		537	}
		538
		539	void inline_speed
		540	queue_events (EV_P_ W *events, int eventcnt, int type)
		541	{
		542	int i;
		543
		544	for (i = 0; i < eventcnt; ++i)
		545	ev_feed_event (EV_A_ events [i], type);
		546	}
		547
		548	/*****************************************************************************/
		549
		550	void inline_size
210	anfds_init (ANFD *base, int count)	551	anfds_init (ANFD *base, int count)
211	{	552	{
212	while (count--)	553	while (count--)
213	{	554	{
214	base->head = 0;	555	base->head = 0;
…		…
217		558
218	++base;	559	++base;
219	}	560	}
220	}	561	}
221		562
222	static void	563	void inline_speed
223	event (EV_P_ W w, int events)
224	{
225	if (w->pending)
226	{
227	pendings [ABSPRI (w)][w->pending - 1].events |= events;
228	return;
229	}
230
231	w->pending = ++pendingcnt [ABSPRI (w)];
232	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
233	pendings [ABSPRI (w)][w->pending - 1].w = w;
234	pendings [ABSPRI (w)][w->pending - 1].events = events;
235	}
236
237	static void
238	queue_events (EV_P_ W *events, int eventcnt, int type)
239	{
240	int i;
241
242	for (i = 0; i < eventcnt; ++i)
243	event (EV_A_ events [i], type);
244	}
245
246	static void
247	fd_event (EV_P_ int fd, int events)	564	fd_event (EV_P_ int fd, int revents)
248	{	565	{
249	ANFD *anfd = anfds + fd;	566	ANFD *anfd = anfds + fd;
250	struct ev_io *w;	567	ev_io *w;
251		568
252	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	569	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
253	{	570	{
254	int ev = w->events & events;	571	int ev = w->events & revents;
255		572
256	if (ev)	573	if (ev)
257	event (EV_A_ (W)w, ev);	574	ev_feed_event (EV_A_ (W)w, ev);
258	}	575	}
259	}	576	}
260		577
261	/*****************************************************************************/	578	void
		579	ev_feed_fd_event (EV_P_ int fd, int revents)
		580	{
		581	if (fd >= 0 && fd < anfdmax)
		582	fd_event (EV_A_ fd, revents);
		583	}
262		584
263	static void	585	void inline_size
264	fd_reify (EV_P)	586	fd_reify (EV_P)
265	{	587	{
266	int i;	588	int i;
267		589
268	for (i = 0; i < fdchangecnt; ++i)	590	for (i = 0; i < fdchangecnt; ++i)
269	{	591	{
270	int fd = fdchanges [i];	592	int fd = fdchanges [i];
271	ANFD *anfd = anfds + fd;	593	ANFD *anfd = anfds + fd;
272	struct ev_io *w;	594	ev_io *w;
273		595
274	int events = 0;	596	unsigned char events = 0;
275		597
276	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	598	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
277	events |= w->events;	599	events |= (unsigned char)w->events;
278		600
279	anfd->reify = 0;	601	#if EV_SELECT_IS_WINSOCKET
280		602	if (events)
281	if (anfd->events != events)
282	{	603	{
283	method_modify (EV_A_ fd, anfd->events, events);	604	unsigned long argp;
284	anfd->events = events;	605	anfd->handle = _get_osfhandle (fd);
		606	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
285	}	607	}
		608	#endif
		609
		610	{
		611	unsigned char o_events = anfd->events;
		612	unsigned char o_reify = anfd->reify;
		613
		614	anfd->reify = 0;
		615	anfd->events = events;
		616
		617	if (o_events != events || o_reify & EV_IOFDSET)
		618	backend_modify (EV_A_ fd, o_events, events);
		619	}
286	}	620	}
287		621
288	fdchangecnt = 0;	622	fdchangecnt = 0;
289	}	623	}
290		624
291	static void	625	void inline_size
292	fd_change (EV_P_ int fd)	626	fd_change (EV_P_ int fd, int flags)
293	{	627	{
294	if (anfds [fd].reify || fdchangecnt < 0)	628	unsigned char reify = anfds [fd].reify;
295	return;
296
297	anfds [fd].reify = 1;	629	anfds [fd].reify |= flags;
298		630
		631	if (expect_true (!reify))
		632	{
299	++fdchangecnt;	633	++fdchangecnt;
300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	634	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
301	fdchanges [fdchangecnt - 1] = fd;	635	fdchanges [fdchangecnt - 1] = fd;
		636	}
302	}	637	}
303		638
304	static void	639	void inline_speed
305	fd_kill (EV_P_ int fd)	640	fd_kill (EV_P_ int fd)
306	{	641	{
307	struct ev_io *w;	642	ev_io *w;
308		643
309	while ((w = (struct ev_io *)anfds [fd].head))	644	while ((w = (ev_io *)anfds [fd].head))
310	{	645	{
311	ev_io_stop (EV_A_ w);	646	ev_io_stop (EV_A_ w);
312	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	647	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
313	}	648	}
		649	}
		650
		651	int inline_size
		652	fd_valid (int fd)
		653	{
		654	#ifdef _WIN32
		655	return _get_osfhandle (fd) != -1;
		656	#else
		657	return fcntl (fd, F_GETFD) != -1;
		658	#endif
314	}	659	}
315		660
316	/* called on EBADF to verify fds */	661	/* called on EBADF to verify fds */
317	static void	662	static void noinline
318	fd_ebadf (EV_P)	663	fd_ebadf (EV_P)
319	{	664	{
320	int fd;	665	int fd;
321		666
322	for (fd = 0; fd < anfdmax; ++fd)	667	for (fd = 0; fd < anfdmax; ++fd)
323	if (anfds [fd].events)	668	if (anfds [fd].events)
324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	669	if (!fd_valid (fd) == -1 && errno == EBADF)
325	fd_kill (EV_A_ fd);	670	fd_kill (EV_A_ fd);
326	}	671	}
327		672
328	/* called on ENOMEM in select/poll to kill some fds and retry */	673	/* called on ENOMEM in select/poll to kill some fds and retry */
329	static void	674	static void noinline
330	fd_enomem (EV_P)	675	fd_enomem (EV_P)
331	{	676	{
332	int fd = anfdmax;	677	int fd;
333		678
334	while (fd--)	679	for (fd = anfdmax; fd--; )
335	if (anfds [fd].events)	680	if (anfds [fd].events)
336	{	681	{
337	close (fd);
338	fd_kill (EV_A_ fd);	682	fd_kill (EV_A_ fd);
339	return;	683	return;
340	}	684	}
341	}	685	}
342		686
		687	/* usually called after fork if backend needs to re-arm all fds from scratch */
		688	static void noinline
		689	fd_rearm_all (EV_P)
		690	{
		691	int fd;
		692
		693	for (fd = 0; fd < anfdmax; ++fd)
		694	if (anfds [fd].events)
		695	{
		696	anfds [fd].events = 0;
		697	fd_change (EV_A_ fd, EV_IOFDSET | 1);
		698	}
		699	}
		700
343	/*****************************************************************************/	701	/*****************************************************************************/
344		702
345	static void	703	void inline_speed
346	upheap (WT *heap, int k)	704	upheap (WT *heap, int k)
347	{	705	{
348	WT w = heap [k];	706	WT w = heap [k];
349		707
350	while (k && heap [k >> 1]->at > w->at)	708	while (k)
351	{	709	{
		710	int p = (k - 1) >> 1;
		711
		712	if (heap [p]->at <= w->at)
		713	break;
		714
352	heap [k] = heap [k >> 1];	715	heap [k] = heap [p];
353	heap [k]->active = k + 1;	716	((W)heap [k])->active = k + 1;
354	k >>= 1;	717	k = p;
355	}	718	}
356		719
357	heap [k] = w;	720	heap [k] = w;
358	heap [k]->active = k + 1;	721	((W)heap [k])->active = k + 1;
359
360	}	722	}
361		723
362	static void	724	void inline_speed
363	downheap (WT *heap, int N, int k)	725	downheap (WT *heap, int N, int k)
364	{	726	{
365	WT w = heap [k];	727	WT w = heap [k];
366		728
367	while (k < (N >> 1))	729	for (;;)
368	{	730	{
369	int j = k << 1;	731	int c = (k << 1) + 1;
370		732
371	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	733	if (c >= N)
372	++j;
373
374	if (w->at <= heap [j]->at)
375	break;	734	break;
376		735
		736	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		737	? 1 : 0;
		738
		739	if (w->at <= heap [c]->at)
		740	break;
		741
377	heap [k] = heap [j];	742	heap [k] = heap [c];
378	heap [k]->active = k + 1;	743	((W)heap [k])->active = k + 1;
		744
379	k = j;	745	k = c;
380	}	746	}
381		747
382	heap [k] = w;	748	heap [k] = w;
383	heap [k]->active = k + 1;	749	((W)heap [k])->active = k + 1;
		750	}
		751
		752	void inline_size
		753	adjustheap (WT *heap, int N, int k)
		754	{
		755	upheap (heap, k);
		756	downheap (heap, N, k);
384	}	757	}
385		758
386	/*****************************************************************************/	759	/*****************************************************************************/
387		760
388	typedef struct	761	typedef struct
389	{	762	{
390	struct ev_watcher_list *head;	763	WL head;
391	sig_atomic_t volatile gotsig;	764	sig_atomic_t volatile gotsig;
392	} ANSIG;	765	} ANSIG;
393		766
394	static ANSIG *signals;	767	static ANSIG *signals;
395	static int signalmax;	768	static int signalmax;
396		769
397	static int sigpipe [2];	770	static int sigpipe [2];
398	static sig_atomic_t volatile gotsig;	771	static sig_atomic_t volatile gotsig;
		772	static ev_io sigev;
399		773
400	static void	774	void inline_size
401	signals_init (ANSIG *base, int count)	775	signals_init (ANSIG *base, int count)
402	{	776	{
403	while (count--)	777	while (count--)
404	{	778	{
405	base->head = 0;	779	base->head = 0;
…		…
410	}	784	}
411		785
412	static void	786	static void
413	sighandler (int signum)	787	sighandler (int signum)
414	{	788	{
		789	#if _WIN32
		790	signal (signum, sighandler);
		791	#endif
		792
415	signals [signum - 1].gotsig = 1;	793	signals [signum - 1].gotsig = 1;
416		794
417	if (!gotsig)	795	if (!gotsig)
418	{	796	{
419	int old_errno = errno;	797	int old_errno = errno;
…		…
421	write (sigpipe [1], &signum, 1);	799	write (sigpipe [1], &signum, 1);
422	errno = old_errno;	800	errno = old_errno;
423	}	801	}
424	}	802	}
425		803
		804	void noinline
		805	ev_feed_signal_event (EV_P_ int signum)
		806	{
		807	WL w;
		808
		809	#if EV_MULTIPLICITY
		810	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		811	#endif
		812
		813	--signum;
		814
		815	if (signum < 0 || signum >= signalmax)
		816	return;
		817
		818	signals [signum].gotsig = 0;
		819
		820	for (w = signals [signum].head; w; w = w->next)
		821	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		822	}
		823
426	static void	824	static void
427	sigcb (EV_P_ struct ev_io *iow, int revents)	825	sigcb (EV_P_ ev_io *iow, int revents)
428	{	826	{
429	struct ev_watcher_list *w;
430	int signum;	827	int signum;
431		828
432	read (sigpipe [0], &revents, 1);	829	read (sigpipe [0], &revents, 1);
433	gotsig = 0;	830	gotsig = 0;
434		831
435	for (signum = signalmax; signum--; )	832	for (signum = signalmax; signum--; )
436	if (signals [signum].gotsig)	833	if (signals [signum].gotsig)
437	{	834	ev_feed_signal_event (EV_A_ signum + 1);
438	signals [signum].gotsig = 0;
439
440	for (w = signals [signum].head; w; w = w->next)
441	event (EV_A_ (W)w, EV_SIGNAL);
442	}
443	}	835	}
444		836
445	static void	837	void inline_speed
		838	fd_intern (int fd)
		839	{
		840	#ifdef _WIN32
		841	int arg = 1;
		842	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		843	#else
		844	fcntl (fd, F_SETFD, FD_CLOEXEC);
		845	fcntl (fd, F_SETFL, O_NONBLOCK);
		846	#endif
		847	}
		848
		849	static void noinline
446	siginit (EV_P)	850	siginit (EV_P)
447	{	851	{
448	#ifndef WIN32	852	fd_intern (sigpipe [0]);
449	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	853	fd_intern (sigpipe [1]);
450	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
451
452	/* rather than sort out wether we really need nb, set it */
453	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
454	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
455	#endif
456		854
457	ev_io_set (&sigev, sigpipe [0], EV_READ);	855	ev_io_set (&sigev, sigpipe [0], EV_READ);
458	ev_io_start (EV_A_ &sigev);	856	ev_io_start (EV_A_ &sigev);
459	ev_unref (EV_A); /* child watcher should not keep loop alive */	857	ev_unref (EV_A); /* child watcher should not keep loop alive */
460	}	858	}
461		859
462	/*****************************************************************************/	860	/*****************************************************************************/
463		861
		862	static WL childs [EV_PID_HASHSIZE];
		863
464	#ifndef WIN32	864	#ifndef _WIN32
		865
		866	static ev_signal childev;
		867
		868	void inline_speed
		869	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		870	{
		871	ev_child *w;
		872
		873	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		874	if (w->pid == pid || !w->pid)
		875	{
		876	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		877	w->rpid = pid;
		878	w->rstatus = status;
		879	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		880	}
		881	}
465		882
466	#ifndef WCONTINUED	883	#ifndef WCONTINUED
467	# define WCONTINUED 0	884	# define WCONTINUED 0
468	#endif	885	#endif
469		886
470	static void	887	static void
471	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
472	{
473	struct ev_child *w;
474
475	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
476	if (w->pid == pid || !w->pid)
477	{
478	w->priority = sw->priority; /* need to do it *now* */
479	w->rpid = pid;
480	w->rstatus = status;
481	event (EV_A_ (W)w, EV_CHILD);
482	}
483	}
484
485	static void
486	childcb (EV_P_ struct ev_signal *sw, int revents)	888	childcb (EV_P_ ev_signal *sw, int revents)
487	{	889	{
488	int pid, status;	890	int pid, status;
489		891
		892	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
490	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	893	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
491	{	894	if (!WCONTINUED
		895	|| errno != EINVAL
		896	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		897	return;
		898
492	/* make sure we are called again until all childs have been reaped */	899	/* make sure we are called again until all childs have been reaped */
		900	/* we need to do it this way so that the callback gets called before we continue */
493	event (EV_A_ (W)sw, EV_SIGNAL);	901	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
494		902
495	child_reap (EV_A_ sw, pid, pid, status);	903	child_reap (EV_A_ sw, pid, pid, status);
		904	if (EV_PID_HASHSIZE > 1)
496	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	905	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
497	}
498	}	906	}
499		907
500	#endif	908	#endif
501		909
502	/*****************************************************************************/	910	/*****************************************************************************/
503		911
		912	#if EV_USE_PORT
		913	# include "ev_port.c"
		914	#endif
504	#if EV_USE_KQUEUE	915	#if EV_USE_KQUEUE
505	# include "ev_kqueue.c"	916	# include "ev_kqueue.c"
506	#endif	917	#endif
507	#if EV_USE_EPOLL	918	#if EV_USE_EPOLL
508	# include "ev_epoll.c"	919	# include "ev_epoll.c"
509	#endif	920	#endif
510	#if EV_USEV_POLL	921	#if EV_USE_POLL
511	# include "ev_poll.c"	922	# include "ev_poll.c"
512	#endif	923	#endif
513	#if EV_USE_SELECT	924	#if EV_USE_SELECT
514	# include "ev_select.c"	925	# include "ev_select.c"
515	#endif	926	#endif
…		…
525	{	936	{
526	return EV_VERSION_MINOR;	937	return EV_VERSION_MINOR;
527	}	938	}
528		939
529	/* return true if we are running with elevated privileges and should ignore env variables */	940	/* return true if we are running with elevated privileges and should ignore env variables */
530	static int	941	int inline_size
531	enable_secure (void)	942	enable_secure (void)
532	{	943	{
533	#ifdef WIN32	944	#ifdef _WIN32
534	return 0;	945	return 0;
535	#else	946	#else
536	return getuid () != geteuid ()	947	return getuid () != geteuid ()
537	|| getgid () != getegid ();	948	|| getgid () != getegid ();
538	#endif	949	#endif
539	}	950	}
540		951
541	int	952	unsigned int
542	ev_method (EV_P)	953	ev_supported_backends (void)
543	{	954	{
544	return method;	955	unsigned int flags = 0;
545	}
546		956
547	static void	957	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
548	loop_init (EV_P_ int methods)	958	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		959	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		960	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		961	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		962
		963	return flags;
		964	}
		965
		966	unsigned int
		967	ev_recommended_backends (void)
549	{	968	{
550	if (!method)	969	unsigned int flags = ev_supported_backends ();
		970
		971	#ifndef __NetBSD__
		972	/* kqueue is borked on everything but netbsd apparently */
		973	/* it usually doesn't work correctly on anything but sockets and pipes */
		974	flags &= ~EVBACKEND_KQUEUE;
		975	#endif
		976	#ifdef __APPLE__
		977	// flags &= ~EVBACKEND_KQUEUE; for documentation
		978	flags &= ~EVBACKEND_POLL;
		979	#endif
		980
		981	return flags;
		982	}
		983
		984	unsigned int
		985	ev_embeddable_backends (void)
		986	{
		987	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
		988
		989	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		990	/* please fix it and tell me how to detect the fix */
		991	flags &= ~EVBACKEND_EPOLL;
		992
		993	return flags;
		994	}
		995
		996	unsigned int
		997	ev_backend (EV_P)
		998	{
		999	return backend;
		1000	}
		1001
		1002	unsigned int
		1003	ev_loop_count (EV_P)
		1004	{
		1005	return loop_count;
		1006	}
		1007
		1008	void
		1009	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1010	{
		1011	io_blocktime = interval;
		1012	}
		1013
		1014	void
		1015	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1016	{
		1017	timeout_blocktime = interval;
		1018	}
		1019
		1020	static void noinline
		1021	loop_init (EV_P_ unsigned int flags)
		1022	{
		1023	if (!backend)
551	{	1024	{
552	#if EV_USE_MONOTONIC	1025	#if EV_USE_MONOTONIC
553	{	1026	{
554	struct timespec ts;	1027	struct timespec ts;
555	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1028	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
556	have_monotonic = 1;	1029	have_monotonic = 1;
557	}	1030	}
558	#endif	1031	#endif
559		1032
560	rt_now = ev_time ();	1033	ev_rt_now = ev_time ();
561	mn_now = get_clock ();	1034	mn_now = get_clock ();
562	now_floor = mn_now;	1035	now_floor = mn_now;
563	rtmn_diff = rt_now - mn_now;	1036	rtmn_diff = ev_rt_now - mn_now;
564		1037
565	if (pipe (sigpipe))	1038	io_blocktime = 0.;
566	return 0;	1039	timeout_blocktime = 0.;
567		1040
568	if (methods == EVMETHOD_AUTO)	1041	/* pid check not overridable via env */
569	if (!enable_secure () && getenv ("LIBmethodS"))	1042	#ifndef _WIN32
570	methods = atoi (getenv ("LIBmethodS"));	1043	if (flags & EVFLAG_FORKCHECK)
571	else	1044	curpid = getpid ();
572	methods = EVMETHOD_ANY;	1045	#endif
573		1046
574	method = 0;	1047	if (!(flags & EVFLAG_NOENV)
		1048	&& !enable_secure ()
		1049	&& getenv ("LIBEV_FLAGS"))
		1050	flags = atoi (getenv ("LIBEV_FLAGS"));
		1051
		1052	if (!(flags & 0x0000ffffUL))
		1053	flags |= ev_recommended_backends ();
		1054
		1055	backend = 0;
		1056	backend_fd = -1;
		1057	#if EV_USE_INOTIFY
		1058	fs_fd = -2;
		1059	#endif
		1060
		1061	#if EV_USE_PORT
		1062	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		1063	#endif
575	#if EV_USE_KQUEUE	1064	#if EV_USE_KQUEUE
576	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	1065	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
577	#endif	1066	#endif
578	#if EV_USE_EPOLL	1067	#if EV_USE_EPOLL
579	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	1068	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
580	#endif	1069	#endif
581	#if EV_USEV_POLL	1070	#if EV_USE_POLL
582	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	1071	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
583	#endif	1072	#endif
584	#if EV_USE_SELECT	1073	#if EV_USE_SELECT
585	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	1074	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
586	#endif	1075	#endif
587		1076
588	if (method)	1077	ev_init (&sigev, sigcb);
		1078	ev_set_priority (&sigev, EV_MAXPRI);
		1079	}
		1080	}
		1081
		1082	static void noinline
		1083	loop_destroy (EV_P)
		1084	{
		1085	int i;
		1086
		1087	#if EV_USE_INOTIFY
		1088	if (fs_fd >= 0)
		1089	close (fs_fd);
		1090	#endif
		1091
		1092	if (backend_fd >= 0)
		1093	close (backend_fd);
		1094
		1095	#if EV_USE_PORT
		1096	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		1097	#endif
		1098	#if EV_USE_KQUEUE
		1099	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		1100	#endif
		1101	#if EV_USE_EPOLL
		1102	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		1103	#endif
		1104	#if EV_USE_POLL
		1105	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		1106	#endif
		1107	#if EV_USE_SELECT
		1108	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		1109	#endif
		1110
		1111	for (i = NUMPRI; i--; )
		1112	{
		1113	array_free (pending, [i]);
		1114	#if EV_IDLE_ENABLE
		1115	array_free (idle, [i]);
		1116	#endif
		1117	}
		1118
		1119	ev_free (anfds); anfdmax = 0;
		1120
		1121	/* have to use the microsoft-never-gets-it-right macro */
		1122	array_free (fdchange, EMPTY);
		1123	array_free (timer, EMPTY);
		1124	#if EV_PERIODIC_ENABLE
		1125	array_free (periodic, EMPTY);
		1126	#endif
		1127	#if EV_FORK_ENABLE
		1128	array_free (fork, EMPTY);
		1129	#endif
		1130	array_free (prepare, EMPTY);
		1131	array_free (check, EMPTY);
		1132
		1133	backend = 0;
		1134	}
		1135
		1136	void inline_size infy_fork (EV_P);
		1137
		1138	void inline_size
		1139	loop_fork (EV_P)
		1140	{
		1141	#if EV_USE_PORT
		1142	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1143	#endif
		1144	#if EV_USE_KQUEUE
		1145	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1146	#endif
		1147	#if EV_USE_EPOLL
		1148	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1149	#endif
		1150	#if EV_USE_INOTIFY
		1151	infy_fork (EV_A);
		1152	#endif
		1153
		1154	if (ev_is_active (&sigev))
		1155	{
		1156	/* default loop */
		1157
		1158	ev_ref (EV_A);
		1159	ev_io_stop (EV_A_ &sigev);
		1160	close (sigpipe [0]);
		1161	close (sigpipe [1]);
		1162
		1163	while (pipe (sigpipe))
		1164	syserr ("(libev) error creating pipe");
		1165
		1166	siginit (EV_A);
		1167	}
		1168
		1169	postfork = 0;
		1170	}
		1171
		1172	#if EV_MULTIPLICITY
		1173	struct ev_loop *
		1174	ev_loop_new (unsigned int flags)
		1175	{
		1176	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		1177
		1178	memset (loop, 0, sizeof (struct ev_loop));
		1179
		1180	loop_init (EV_A_ flags);
		1181
		1182	if (ev_backend (EV_A))
		1183	return loop;
		1184
		1185	return 0;
		1186	}
		1187
		1188	void
		1189	ev_loop_destroy (EV_P)
		1190	{
		1191	loop_destroy (EV_A);
		1192	ev_free (loop);
		1193	}
		1194
		1195	void
		1196	ev_loop_fork (EV_P)
		1197	{
		1198	postfork = 1;
		1199	}
		1200
		1201	#endif
		1202
		1203	#if EV_MULTIPLICITY
		1204	struct ev_loop *
		1205	ev_default_loop_init (unsigned int flags)
		1206	#else
		1207	int
		1208	ev_default_loop (unsigned int flags)
		1209	#endif
		1210	{
		1211	if (sigpipe [0] == sigpipe [1])
		1212	if (pipe (sigpipe))
		1213	return 0;
		1214
		1215	if (!ev_default_loop_ptr)
		1216	{
		1217	#if EV_MULTIPLICITY
		1218	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		1219	#else
		1220	ev_default_loop_ptr = 1;
		1221	#endif
		1222
		1223	loop_init (EV_A_ flags);
		1224
		1225	if (ev_backend (EV_A))
589	{	1226	{
590	ev_watcher_init (&sigev, sigcb);
591	ev_set_priority (&sigev, EV_MAXPRI);
592	siginit (EV_A);	1227	siginit (EV_A);
593		1228
594	#ifndef WIN32	1229	#ifndef _WIN32
595	ev_signal_init (&childev, childcb, SIGCHLD);	1230	ev_signal_init (&childev, childcb, SIGCHLD);
596	ev_set_priority (&childev, EV_MAXPRI);	1231	ev_set_priority (&childev, EV_MAXPRI);
597	ev_signal_start (EV_A_ &childev);	1232	ev_signal_start (EV_A_ &childev);
598	ev_unref (EV_A); /* child watcher should not keep loop alive */	1233	ev_unref (EV_A); /* child watcher should not keep loop alive */
599	#endif	1234	#endif
600	}	1235	}
		1236	else
		1237	ev_default_loop_ptr = 0;
601	}	1238	}
602		1239
603	return method;	1240	return ev_default_loop_ptr;
604	}	1241	}
605		1242
		1243	void
		1244	ev_default_destroy (void)
		1245	{
606	#ifdef EV_MULTIPLICITY	1246	#if EV_MULTIPLICITY
607		1247	struct ev_loop *loop = ev_default_loop_ptr;
608	struct ev_loop *
609	ev_loop_new (int methods)
610	{
611	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));
612
613	loop_init (EV_A_ methods);
614
615	return loop;
616	}
617
618	void
619	ev_loop_delete (EV_P)
620	{
621	/*TODO*/
622	free (loop);
623	}
624
625	#else
626
627	int
628	ev_init (int methods)
629	{
630	loop_init ();
631	}
632
633	#endif	1248	#endif
		1249
		1250	#ifndef _WIN32
		1251	ev_ref (EV_A); /* child watcher */
		1252	ev_signal_stop (EV_A_ &childev);
		1253	#endif
		1254
		1255	ev_ref (EV_A); /* signal watcher */
		1256	ev_io_stop (EV_A_ &sigev);
		1257
		1258	close (sigpipe [0]); sigpipe [0] = 0;
		1259	close (sigpipe [1]); sigpipe [1] = 0;
		1260
		1261	loop_destroy (EV_A);
		1262	}
		1263
		1264	void
		1265	ev_default_fork (void)
		1266	{
		1267	#if EV_MULTIPLICITY
		1268	struct ev_loop *loop = ev_default_loop_ptr;
		1269	#endif
		1270
		1271	if (backend)
		1272	postfork = 1;
		1273	}
634		1274
635	/*****************************************************************************/	1275	/*****************************************************************************/
636		1276
637	void	1277	void
638	ev_fork_prepare (void)	1278	ev_invoke (EV_P_ void *w, int revents)
639	{	1279	{
640	/* nop */	1280	EV_CB_INVOKE ((W)w, revents);
641	}	1281	}
642		1282
643	void	1283	void inline_speed
644	ev_fork_parent (void)
645	{
646	/* nop */
647	}
648
649	void
650	ev_fork_child (void)
651	{
652	/*TODO*/
653	#if !EV_MULTIPLICITY
654	#if EV_USE_EPOLL
655	if (method == EVMETHOD_EPOLL)
656	epoll_postfork_child (EV_A);
657	#endif
658
659	ev_io_stop (EV_A_ &sigev);
660	close (sigpipe [0]);
661	close (sigpipe [1]);
662	pipe (sigpipe);
663	siginit (EV_A);
664	#endif
665	}
666
667	/*****************************************************************************/
668
669	static void
670	call_pending (EV_P)	1284	call_pending (EV_P)
671	{	1285	{
672	int pri;	1286	int pri;
673		1287
674	for (pri = NUMPRI; pri--; )	1288	for (pri = NUMPRI; pri--; )
675	while (pendingcnt [pri])	1289	while (pendingcnt [pri])
676	{	1290	{
677	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1291	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
678		1292
679	if (p->w)	1293	if (expect_true (p->w))
680	{	1294	{
		1295	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1296
681	p->w->pending = 0;	1297	p->w->pending = 0;
682	p->w->cb (EV_A_ p->w, p->events);	1298	EV_CB_INVOKE (p->w, p->events);
683	}	1299	}
684	}	1300	}
685	}	1301	}
686		1302
687	static void	1303	void inline_size
688	timers_reify (EV_P)	1304	timers_reify (EV_P)
689	{	1305	{
690	while (timercnt && timers [0]->at <= mn_now)	1306	while (timercnt && ((WT)timers [0])->at <= mn_now)
691	{	1307	{
692	struct ev_timer *w = timers [0];	1308	ev_timer *w = (ev_timer *)timers [0];
		1309
		1310	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
693		1311
694	/* first reschedule or stop timer */	1312	/* first reschedule or stop timer */
695	if (w->repeat)	1313	if (w->repeat)
696	{	1314	{
697	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1315	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1316
698	w->at = mn_now + w->repeat;	1317	((WT)w)->at += w->repeat;
		1318	if (((WT)w)->at < mn_now)
		1319	((WT)w)->at = mn_now;
		1320
699	downheap ((WT *)timers, timercnt, 0);	1321	downheap (timers, timercnt, 0);
700	}	1322	}
701	else	1323	else
702	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1324	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
703		1325
704	event (EV_A_ (W)w, EV_TIMEOUT);	1326	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
705	}	1327	}
706	}	1328	}
707		1329
708	static void	1330	#if EV_PERIODIC_ENABLE
		1331	void inline_size
709	periodics_reify (EV_P)	1332	periodics_reify (EV_P)
710	{	1333	{
711	while (periodiccnt && periodics [0]->at <= rt_now)	1334	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
712	{	1335	{
713	struct ev_periodic *w = periodics [0];	1336	ev_periodic *w = (ev_periodic *)periodics [0];
		1337
		1338	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
714		1339
715	/* first reschedule or stop timer */	1340	/* first reschedule or stop timer */
716	if (w->interval)	1341	if (w->reschedule_cb)
717	{	1342	{
		1343	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
		1344	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1345	downheap (periodics, periodiccnt, 0);
		1346	}
		1347	else if (w->interval)
		1348	{
718	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1349	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1350	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
719	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1351	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
720	downheap ((WT *)periodics, periodiccnt, 0);	1352	downheap (periodics, periodiccnt, 0);
721	}	1353	}
722	else	1354	else
723	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1355	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
724		1356
725	event (EV_A_ (W)w, EV_PERIODIC);	1357	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
726	}	1358	}
727	}	1359	}
728		1360
729	static void	1361	static void noinline
730	periodics_reschedule (EV_P)	1362	periodics_reschedule (EV_P)
731	{	1363	{
732	int i;	1364	int i;
733		1365
734	/* adjust periodics after time jump */	1366	/* adjust periodics after time jump */
735	for (i = 0; i < periodiccnt; ++i)	1367	for (i = 0; i < periodiccnt; ++i)
736	{	1368	{
737	struct ev_periodic *w = periodics [i];	1369	ev_periodic *w = (ev_periodic *)periodics [i];
738		1370
		1371	if (w->reschedule_cb)
		1372	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
739	if (w->interval)	1373	else if (w->interval)
		1374	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1375	}
		1376
		1377	/* now rebuild the heap */
		1378	for (i = periodiccnt >> 1; i--; )
		1379	downheap (periodics, periodiccnt, i);
		1380	}
		1381	#endif
		1382
		1383	#if EV_IDLE_ENABLE
		1384	void inline_size
		1385	idle_reify (EV_P)
		1386	{
		1387	if (expect_false (idleall))
		1388	{
		1389	int pri;
		1390
		1391	for (pri = NUMPRI; pri--; )
740	{	1392	{
741	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1393	if (pendingcnt [pri])
		1394	break;
742		1395
743	if (fabs (diff) >= 1e-4)	1396	if (idlecnt [pri])
744	{	1397	{
745	ev_periodic_stop (EV_A_ w);	1398	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
746	ev_periodic_start (EV_A_ w);	1399	break;
747
748	i = 0; /* restart loop, inefficient, but time jumps should be rare */
749	}	1400	}
750	}	1401	}
751	}	1402	}
752	}	1403	}
		1404	#endif
753		1405
754	inline int	1406	void inline_speed
755	time_update_monotonic (EV_P)	1407	time_update (EV_P_ ev_tstamp max_block)
756	{
757	mn_now = get_clock ();
758
759	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
760	{
761	rt_now = rtmn_diff + mn_now;
762	return 0;
763	}
764	else
765	{
766	now_floor = mn_now;
767	rt_now = ev_time ();
768	return 1;
769	}
770	}
771
772	static void
773	time_update (EV_P)
774	{	1408	{
775	int i;	1409	int i;
776		1410
777	#if EV_USE_MONOTONIC	1411	#if EV_USE_MONOTONIC
778	if (expect_true (have_monotonic))	1412	if (expect_true (have_monotonic))
779	{	1413	{
780	if (time_update_monotonic (EV_A))	1414	ev_tstamp odiff = rtmn_diff;
		1415
		1416	mn_now = get_clock ();
		1417
		1418	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1419	/* interpolate in the meantime */
		1420	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
781	{	1421	{
782	ev_tstamp odiff = rtmn_diff;	1422	ev_rt_now = rtmn_diff + mn_now;
		1423	return;
		1424	}
783		1425
		1426	now_floor = mn_now;
		1427	ev_rt_now = ev_time ();
		1428
784	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1429	/* loop a few times, before making important decisions.
		1430	* on the choice of "4": one iteration isn't enough,
		1431	* in case we get preempted during the calls to
		1432	* ev_time and get_clock. a second call is almost guaranteed
		1433	* to succeed in that case, though. and looping a few more times
		1434	* doesn't hurt either as we only do this on time-jumps or
		1435	* in the unlikely event of having been preempted here.
		1436	*/
		1437	for (i = 4; --i; )
785	{	1438	{
786	rtmn_diff = rt_now - mn_now;	1439	rtmn_diff = ev_rt_now - mn_now;
787		1440
788	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1441	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
789	return; /* all is well */	1442	return; /* all is well */
790		1443
791	rt_now = ev_time ();	1444	ev_rt_now = ev_time ();
792	mn_now = get_clock ();	1445	mn_now = get_clock ();
793	now_floor = mn_now;	1446	now_floor = mn_now;
794	}	1447	}
795		1448
		1449	# if EV_PERIODIC_ENABLE
		1450	periodics_reschedule (EV_A);
		1451	# endif
		1452	/* no timer adjustment, as the monotonic clock doesn't jump */
		1453	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1454	}
		1455	else
		1456	#endif
		1457	{
		1458	ev_rt_now = ev_time ();
		1459
		1460	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1461	{
		1462	#if EV_PERIODIC_ENABLE
796	periodics_reschedule (EV_A);	1463	periodics_reschedule (EV_A);
797	/* no timer adjustment, as the monotonic clock doesn't jump */	1464	#endif
798	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1465	/* adjust timers. this is easy, as the offset is the same for all of them */
		1466	for (i = 0; i < timercnt; ++i)
		1467	((WT)timers [i])->at += ev_rt_now - mn_now;
799	}	1468	}
800	}
801	else
802	#endif
803	{
804	rt_now = ev_time ();
805		1469
806	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
807	{
808	periodics_reschedule (EV_A);
809
810	/* adjust timers. this is easy, as the offset is the same for all */
811	for (i = 0; i < timercnt; ++i)
812	timers [i]->at += rt_now - mn_now;
813	}
814
815	mn_now = rt_now;	1470	mn_now = ev_rt_now;
816	}	1471	}
817	}	1472	}
818		1473
819	void	1474	void
820	ev_ref (EV_P)	1475	ev_ref (EV_P)
…		…
831	static int loop_done;	1486	static int loop_done;
832		1487
833	void	1488	void
834	ev_loop (EV_P_ int flags)	1489	ev_loop (EV_P_ int flags)
835	{	1490	{
836	double block;
837	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1491	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1492	? EVUNLOOP_ONE
		1493	: EVUNLOOP_CANCEL;
		1494
		1495	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
838		1496
839	do	1497	do
840	{	1498	{
		1499	#ifndef _WIN32
		1500	if (expect_false (curpid)) /* penalise the forking check even more */
		1501	if (expect_false (getpid () != curpid))
		1502	{
		1503	curpid = getpid ();
		1504	postfork = 1;
		1505	}
		1506	#endif
		1507
		1508	#if EV_FORK_ENABLE
		1509	/* we might have forked, so queue fork handlers */
		1510	if (expect_false (postfork))
		1511	if (forkcnt)
		1512	{
		1513	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1514	call_pending (EV_A);
		1515	}
		1516	#endif
		1517
841	/* queue check watchers (and execute them) */	1518	/* queue prepare watchers (and execute them) */
842	if (expect_false (preparecnt))	1519	if (expect_false (preparecnt))
843	{	1520	{
844	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1521	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
845	call_pending (EV_A);	1522	call_pending (EV_A);
846	}	1523	}
847		1524
		1525	if (expect_false (!activecnt))
		1526	break;
		1527
		1528	/* we might have forked, so reify kernel state if necessary */
		1529	if (expect_false (postfork))
		1530	loop_fork (EV_A);
		1531
848	/* update fd-related kernel structures */	1532	/* update fd-related kernel structures */
849	fd_reify (EV_A);	1533	fd_reify (EV_A);
850		1534
851	/* calculate blocking time */	1535	/* calculate blocking time */
		1536	{
		1537	ev_tstamp waittime = 0.;
		1538	ev_tstamp sleeptime = 0.;
852		1539
853	/* we only need this for !monotonic clockor timers, but as we basically	1540	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
854	always have timers, we just calculate it always */
855	#if EV_USE_MONOTONIC
856	if (expect_true (have_monotonic))
857	time_update_monotonic (EV_A);
858	else
859	#endif
860	{	1541	{
861	rt_now = ev_time ();	1542	/* update time to cancel out callback processing overhead */
862	mn_now = rt_now;	1543	time_update (EV_A_ 1e100);
863	}
864		1544
865	if (flags & EVLOOP_NONBLOCK || idlecnt)
866	block = 0.;
867	else
868	{
869	block = MAX_BLOCKTIME;	1545	waittime = MAX_BLOCKTIME;
870		1546
871	if (timercnt)	1547	if (timercnt)
872	{	1548	{
873	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1549	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
874	if (block > to) block = to;	1550	if (waittime > to) waittime = to;
875	}	1551	}
876		1552
		1553	#if EV_PERIODIC_ENABLE
877	if (periodiccnt)	1554	if (periodiccnt)
878	{	1555	{
879	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1556	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
880	if (block > to) block = to;	1557	if (waittime > to) waittime = to;
881	}	1558	}
		1559	#endif
882		1560
883	if (block < 0.) block = 0.;	1561	if (expect_false (waittime < timeout_blocktime))
		1562	waittime = timeout_blocktime;
		1563
		1564	sleeptime = waittime - backend_fudge;
		1565
		1566	if (expect_true (sleeptime > io_blocktime))
		1567	sleeptime = io_blocktime;
		1568
		1569	if (sleeptime)
		1570	{
		1571	ev_sleep (sleeptime);
		1572	waittime -= sleeptime;
		1573	}
884	}	1574	}
885		1575
886	method_poll (EV_A_ block);	1576	++loop_count;
		1577	backend_poll (EV_A_ waittime);
887		1578
888	/* update rt_now, do magic */	1579	/* update ev_rt_now, do magic */
889	time_update (EV_A);	1580	time_update (EV_A_ waittime + sleeptime);
		1581	}
890		1582
891	/* queue pending timers and reschedule them */	1583	/* queue pending timers and reschedule them */
892	timers_reify (EV_A); /* relative timers called last */	1584	timers_reify (EV_A); /* relative timers called last */
		1585	#if EV_PERIODIC_ENABLE
893	periodics_reify (EV_A); /* absolute timers called first */	1586	periodics_reify (EV_A); /* absolute timers called first */
		1587	#endif
894		1588
		1589	#if EV_IDLE_ENABLE
895	/* queue idle watchers unless io or timers are pending */	1590	/* queue idle watchers unless other events are pending */
896	if (!pendingcnt)	1591	idle_reify (EV_A);
897	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1592	#endif
898		1593
899	/* queue check watchers, to be executed first */	1594	/* queue check watchers, to be executed first */
900	if (checkcnt)	1595	if (expect_false (checkcnt))
901	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1596	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
902		1597
903	call_pending (EV_A);	1598	call_pending (EV_A);
		1599
904	}	1600	}
905	while (activecnt && !loop_done);	1601	while (expect_true (activecnt && !loop_done));
906		1602
907	if (loop_done != 2)	1603	if (loop_done == EVUNLOOP_ONE)
908	loop_done = 0;	1604	loop_done = EVUNLOOP_CANCEL;
909	}	1605	}
910		1606
911	void	1607	void
912	ev_unloop (EV_P_ int how)	1608	ev_unloop (EV_P_ int how)
913	{	1609	{
914	loop_done = how;	1610	loop_done = how;
915	}	1611	}
916		1612
917	/*****************************************************************************/	1613	/*****************************************************************************/
918		1614
919	inline void	1615	void inline_size
920	wlist_add (WL *head, WL elem)	1616	wlist_add (WL *head, WL elem)
921	{	1617	{
922	elem->next = *head;	1618	elem->next = *head;
923	*head = elem;	1619	*head = elem;
924	}	1620	}
925		1621
926	inline void	1622	void inline_size
927	wlist_del (WL *head, WL elem)	1623	wlist_del (WL *head, WL elem)
928	{	1624	{
929	while (*head)	1625	while (*head)
930	{	1626	{
931	if (*head == elem)	1627	if (*head == elem)
…		…
936		1632
937	head = &(*head)->next;	1633	head = &(*head)->next;
938	}	1634	}
939	}	1635	}
940		1636
941	inline void	1637	void inline_speed
942	ev_clear_pending (EV_P_ W w)	1638	clear_pending (EV_P_ W w)
943	{	1639	{
944	if (w->pending)	1640	if (w->pending)
945	{	1641	{
946	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1642	pendings [ABSPRI (w)][w->pending - 1].w = 0;
947	w->pending = 0;	1643	w->pending = 0;
948	}	1644	}
949	}	1645	}
950		1646
951	inline void	1647	int
		1648	ev_clear_pending (EV_P_ void *w)
		1649	{
		1650	W w_ = (W)w;
		1651	int pending = w_->pending;
		1652
		1653	if (expect_true (pending))
		1654	{
		1655	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1656	w_->pending = 0;
		1657	p->w = 0;
		1658	return p->events;
		1659	}
		1660	else
		1661	return 0;
		1662	}
		1663
		1664	void inline_size
		1665	pri_adjust (EV_P_ W w)
		1666	{
		1667	int pri = w->priority;
		1668	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1669	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1670	w->priority = pri;
		1671	}
		1672
		1673	void inline_speed
952	ev_start (EV_P_ W w, int active)	1674	ev_start (EV_P_ W w, int active)
953	{	1675	{
954	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1676	pri_adjust (EV_A_ w);
955	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
956
957	w->active = active;	1677	w->active = active;
958	ev_ref (EV_A);	1678	ev_ref (EV_A);
959	}	1679	}
960		1680
961	inline void	1681	void inline_size
962	ev_stop (EV_P_ W w)	1682	ev_stop (EV_P_ W w)
963	{	1683	{
964	ev_unref (EV_A);	1684	ev_unref (EV_A);
965	w->active = 0;	1685	w->active = 0;
966	}	1686	}
967		1687
968	/*****************************************************************************/	1688	/*****************************************************************************/
969		1689
970	void	1690	void noinline
971	ev_io_start (EV_P_ struct ev_io *w)	1691	ev_io_start (EV_P_ ev_io *w)
972	{	1692	{
973	int fd = w->fd;	1693	int fd = w->fd;
974		1694
975	if (ev_is_active (w))	1695	if (expect_false (ev_is_active (w)))
976	return;	1696	return;
977		1697
978	assert (("ev_io_start called with negative fd", fd >= 0));	1698	assert (("ev_io_start called with negative fd", fd >= 0));
979		1699
980	ev_start (EV_A_ (W)w, 1);	1700	ev_start (EV_A_ (W)w, 1);
981	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1701	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
982	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1702	wlist_add (&anfds[fd].head, (WL)w);
983		1703
984	fd_change (EV_A_ fd);	1704	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1705	w->events &= ~EV_IOFDSET;
985	}	1706	}
986		1707
987	void	1708	void noinline
988	ev_io_stop (EV_P_ struct ev_io *w)	1709	ev_io_stop (EV_P_ ev_io *w)
989	{	1710	{
990	ev_clear_pending (EV_A_ (W)w);	1711	clear_pending (EV_A_ (W)w);
991	if (!ev_is_active (w))	1712	if (expect_false (!ev_is_active (w)))
992	return;	1713	return;
993		1714
		1715	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1716
994	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1717	wlist_del (&anfds[w->fd].head, (WL)w);
995	ev_stop (EV_A_ (W)w);	1718	ev_stop (EV_A_ (W)w);
996		1719
997	fd_change (EV_A_ w->fd);	1720	fd_change (EV_A_ w->fd, 1);
998	}	1721	}
999		1722
1000	void	1723	void noinline
1001	ev_timer_start (EV_P_ struct ev_timer *w)	1724	ev_timer_start (EV_P_ ev_timer *w)
1002	{	1725	{
1003	if (ev_is_active (w))	1726	if (expect_false (ev_is_active (w)))
1004	return;	1727	return;
1005		1728
1006	w->at += mn_now;	1729	((WT)w)->at += mn_now;
1007		1730
1008	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1731	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1009		1732
1010	ev_start (EV_A_ (W)w, ++timercnt);	1733	ev_start (EV_A_ (W)w, ++timercnt);
1011	array_needsize (timers, timermax, timercnt, );	1734	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1012	timers [timercnt - 1] = w;	1735	timers [timercnt - 1] = (WT)w;
1013	upheap ((WT *)timers, timercnt - 1);	1736	upheap (timers, timercnt - 1);
1014	}
1015		1737
1016	void	1738	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1739	}
		1740
		1741	void noinline
1017	ev_timer_stop (EV_P_ struct ev_timer *w)	1742	ev_timer_stop (EV_P_ ev_timer *w)
1018	{	1743	{
1019	ev_clear_pending (EV_A_ (W)w);	1744	clear_pending (EV_A_ (W)w);
1020	if (!ev_is_active (w))	1745	if (expect_false (!ev_is_active (w)))
1021	return;	1746	return;
1022		1747
1023	if (w->active < timercnt--)	1748	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
		1749
		1750	{
		1751	int active = ((W)w)->active;
		1752
		1753	if (expect_true (--active < --timercnt))
1024	{	1754	{
1025	timers [w->active - 1] = timers [timercnt];	1755	timers [active] = timers [timercnt];
1026	downheap ((WT *)timers, timercnt, w->active - 1);	1756	adjustheap (timers, timercnt, active);
1027	}	1757	}
		1758	}
1028		1759
1029	w->at = w->repeat;	1760	((WT)w)->at -= mn_now;
1030		1761
1031	ev_stop (EV_A_ (W)w);	1762	ev_stop (EV_A_ (W)w);
1032	}	1763	}
1033		1764
1034	void	1765	void noinline
1035	ev_timer_again (EV_P_ struct ev_timer *w)	1766	ev_timer_again (EV_P_ ev_timer *w)
1036	{	1767	{
1037	if (ev_is_active (w))	1768	if (ev_is_active (w))
1038	{	1769	{
1039	if (w->repeat)	1770	if (w->repeat)
1040	{	1771	{
1041	w->at = mn_now + w->repeat;	1772	((WT)w)->at = mn_now + w->repeat;
1042	downheap ((WT *)timers, timercnt, w->active - 1);	1773	adjustheap (timers, timercnt, ((W)w)->active - 1);
1043	}	1774	}
1044	else	1775	else
1045	ev_timer_stop (EV_A_ w);	1776	ev_timer_stop (EV_A_ w);
1046	}	1777	}
1047	else if (w->repeat)	1778	else if (w->repeat)
		1779	{
		1780	w->at = w->repeat;
1048	ev_timer_start (EV_A_ w);	1781	ev_timer_start (EV_A_ w);
		1782	}
1049	}	1783	}
1050		1784
1051	void	1785	#if EV_PERIODIC_ENABLE
		1786	void noinline
1052	ev_periodic_start (EV_P_ struct ev_periodic *w)	1787	ev_periodic_start (EV_P_ ev_periodic *w)
1053	{	1788	{
1054	if (ev_is_active (w))	1789	if (expect_false (ev_is_active (w)))
1055	return;	1790	return;
1056		1791
		1792	if (w->reschedule_cb)
		1793	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1794	else if (w->interval)
		1795	{
1057	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1796	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1058
1059	/* this formula differs from the one in periodic_reify because we do not always round up */	1797	/* this formula differs from the one in periodic_reify because we do not always round up */
1060	if (w->interval)
1061	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1798	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1799	}
		1800	else
		1801	((WT)w)->at = w->offset;
1062		1802
1063	ev_start (EV_A_ (W)w, ++periodiccnt);	1803	ev_start (EV_A_ (W)w, ++periodiccnt);
1064	array_needsize (periodics, periodicmax, periodiccnt, );	1804	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1065	periodics [periodiccnt - 1] = w;	1805	periodics [periodiccnt - 1] = (WT)w;
1066	upheap ((WT *)periodics, periodiccnt - 1);	1806	upheap (periodics, periodiccnt - 1);
1067	}
1068		1807
1069	void	1808	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1809	}
		1810
		1811	void noinline
1070	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1812	ev_periodic_stop (EV_P_ ev_periodic *w)
1071	{	1813	{
1072	ev_clear_pending (EV_A_ (W)w);	1814	clear_pending (EV_A_ (W)w);
1073	if (!ev_is_active (w))	1815	if (expect_false (!ev_is_active (w)))
1074	return;	1816	return;
1075		1817
1076	if (w->active < periodiccnt--)	1818	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
		1819
		1820	{
		1821	int active = ((W)w)->active;
		1822
		1823	if (expect_true (--active < --periodiccnt))
1077	{	1824	{
1078	periodics [w->active - 1] = periodics [periodiccnt];	1825	periodics [active] = periodics [periodiccnt];
1079	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1826	adjustheap (periodics, periodiccnt, active);
1080	}	1827	}
		1828	}
1081		1829
1082	ev_stop (EV_A_ (W)w);	1830	ev_stop (EV_A_ (W)w);
1083	}	1831	}
		1832
		1833	void noinline
		1834	ev_periodic_again (EV_P_ ev_periodic *w)
		1835	{
		1836	/* TODO: use adjustheap and recalculation */
		1837	ev_periodic_stop (EV_A_ w);
		1838	ev_periodic_start (EV_A_ w);
		1839	}
		1840	#endif
1084		1841
1085	#ifndef SA_RESTART	1842	#ifndef SA_RESTART
1086	# define SA_RESTART 0	1843	# define SA_RESTART 0
1087	#endif	1844	#endif
1088		1845
1089	void	1846	void noinline
1090	ev_signal_start (EV_P_ struct ev_signal *w)	1847	ev_signal_start (EV_P_ ev_signal *w)
1091	{	1848	{
		1849	#if EV_MULTIPLICITY
		1850	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1851	#endif
1092	if (ev_is_active (w))	1852	if (expect_false (ev_is_active (w)))
1093	return;	1853	return;
1094		1854
1095	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1855	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1096		1856
		1857	{
		1858	#ifndef _WIN32
		1859	sigset_t full, prev;
		1860	sigfillset (&full);
		1861	sigprocmask (SIG_SETMASK, &full, &prev);
		1862	#endif
		1863
		1864	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1865
		1866	#ifndef _WIN32
		1867	sigprocmask (SIG_SETMASK, &prev, 0);
		1868	#endif
		1869	}
		1870
1097	ev_start (EV_A_ (W)w, 1);	1871	ev_start (EV_A_ (W)w, 1);
1098	array_needsize (signals, signalmax, w->signum, signals_init);
1099	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1872	wlist_add (&signals [w->signum - 1].head, (WL)w);
1100		1873
1101	if (!w->next)	1874	if (!((WL)w)->next)
1102	{	1875	{
		1876	#if _WIN32
		1877	signal (w->signum, sighandler);
		1878	#else
1103	struct sigaction sa;	1879	struct sigaction sa;
1104	sa.sa_handler = sighandler;	1880	sa.sa_handler = sighandler;
1105	sigfillset (&sa.sa_mask);	1881	sigfillset (&sa.sa_mask);
1106	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1882	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1107	sigaction (w->signum, &sa, 0);	1883	sigaction (w->signum, &sa, 0);
		1884	#endif
1108	}	1885	}
1109	}	1886	}
1110		1887
1111	void	1888	void noinline
1112	ev_signal_stop (EV_P_ struct ev_signal *w)	1889	ev_signal_stop (EV_P_ ev_signal *w)
1113	{	1890	{
1114	ev_clear_pending (EV_A_ (W)w);	1891	clear_pending (EV_A_ (W)w);
1115	if (!ev_is_active (w))	1892	if (expect_false (!ev_is_active (w)))
1116	return;	1893	return;
1117		1894
1118	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1895	wlist_del (&signals [w->signum - 1].head, (WL)w);
1119	ev_stop (EV_A_ (W)w);	1896	ev_stop (EV_A_ (W)w);
1120		1897
1121	if (!signals [w->signum - 1].head)	1898	if (!signals [w->signum - 1].head)
1122	signal (w->signum, SIG_DFL);	1899	signal (w->signum, SIG_DFL);
1123	}	1900	}
1124		1901
1125	void	1902	void
1126	ev_idle_start (EV_P_ struct ev_idle *w)	1903	ev_child_start (EV_P_ ev_child *w)
1127	{	1904	{
		1905	#if EV_MULTIPLICITY
		1906	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1907	#endif
1128	if (ev_is_active (w))	1908	if (expect_false (ev_is_active (w)))
1129	return;	1909	return;
1130		1910
1131	ev_start (EV_A_ (W)w, ++idlecnt);	1911	ev_start (EV_A_ (W)w, 1);
1132	array_needsize (idles, idlemax, idlecnt, );	1912	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1133	idles [idlecnt - 1] = w;
1134	}	1913	}
1135		1914
1136	void	1915	void
1137	ev_idle_stop (EV_P_ struct ev_idle *w)	1916	ev_child_stop (EV_P_ ev_child *w)
1138	{	1917	{
1139	ev_clear_pending (EV_A_ (W)w);	1918	clear_pending (EV_A_ (W)w);
1140	if (ev_is_active (w))	1919	if (expect_false (!ev_is_active (w)))
1141	return;	1920	return;
1142		1921
1143	idles [w->active - 1] = idles [--idlecnt];	1922	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1144	ev_stop (EV_A_ (W)w);	1923	ev_stop (EV_A_ (W)w);
1145	}	1924	}
1146		1925
		1926	#if EV_STAT_ENABLE
		1927
		1928	# ifdef _WIN32
		1929	# undef lstat
		1930	# define lstat(a,b) _stati64 (a,b)
		1931	# endif
		1932
		1933	#define DEF_STAT_INTERVAL 5.0074891
		1934	#define MIN_STAT_INTERVAL 0.1074891
		1935
		1936	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1937
		1938	#if EV_USE_INOTIFY
		1939	# define EV_INOTIFY_BUFSIZE 8192
		1940
		1941	static void noinline
		1942	infy_add (EV_P_ ev_stat *w)
		1943	{
		1944	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);
		1945
		1946	if (w->wd < 0)
		1947	{
		1948	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1949
		1950	/* monitor some parent directory for speedup hints */
		1951	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1952	{
		1953	char path [4096];
		1954	strcpy (path, w->path);
		1955
		1956	do
		1957	{
		1958	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1959	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1960
		1961	char *pend = strrchr (path, '/');
		1962
		1963	if (!pend)
		1964	break; /* whoops, no '/', complain to your admin */
		1965
		1966	*pend = 0;
		1967	w->wd = inotify_add_watch (fs_fd, path, mask);
		1968	}
		1969	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1970	}
		1971	}
		1972	else
		1973	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1974
		1975	if (w->wd >= 0)
		1976	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1977	}
		1978
		1979	static void noinline
		1980	infy_del (EV_P_ ev_stat *w)
		1981	{
		1982	int slot;
		1983	int wd = w->wd;
		1984
		1985	if (wd < 0)
		1986	return;
		1987
		1988	w->wd = -2;
		1989	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1990	wlist_del (&fs_hash [slot].head, (WL)w);
		1991
		1992	/* remove this watcher, if others are watching it, they will rearm */
		1993	inotify_rm_watch (fs_fd, wd);
		1994	}
		1995
		1996	static void noinline
		1997	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1998	{
		1999	if (slot < 0)
		2000	/* overflow, need to check for all hahs slots */
		2001	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2002	infy_wd (EV_A_ slot, wd, ev);
		2003	else
		2004	{
		2005	WL w_;
		2006
		2007	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		2008	{
		2009	ev_stat *w = (ev_stat *)w_;
		2010	w_ = w_->next; /* lets us remove this watcher and all before it */
		2011
		2012	if (w->wd == wd || wd == -1)
		2013	{
		2014	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		2015	{
		2016	w->wd = -1;
		2017	infy_add (EV_A_ w); /* re-add, no matter what */
		2018	}
		2019
		2020	stat_timer_cb (EV_A_ &w->timer, 0);
		2021	}
		2022	}
		2023	}
		2024	}
		2025
		2026	static void
		2027	infy_cb (EV_P_ ev_io *w, int revents)
		2028	{
		2029	char buf [EV_INOTIFY_BUFSIZE];
		2030	struct inotify_event *ev = (struct inotify_event *)buf;
		2031	int ofs;
		2032	int len = read (fs_fd, buf, sizeof (buf));
		2033
		2034	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2035	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2036	}
		2037
		2038	void inline_size
		2039	infy_init (EV_P)
		2040	{
		2041	if (fs_fd != -2)
		2042	return;
		2043
		2044	fs_fd = inotify_init ();
		2045
		2046	if (fs_fd >= 0)
		2047	{
		2048	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2049	ev_set_priority (&fs_w, EV_MAXPRI);
		2050	ev_io_start (EV_A_ &fs_w);
		2051	}
		2052	}
		2053
		2054	void inline_size
		2055	infy_fork (EV_P)
		2056	{
		2057	int slot;
		2058
		2059	if (fs_fd < 0)
		2060	return;
		2061
		2062	close (fs_fd);
		2063	fs_fd = inotify_init ();
		2064
		2065	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2066	{
		2067	WL w_ = fs_hash [slot].head;
		2068	fs_hash [slot].head = 0;
		2069
		2070	while (w_)
		2071	{
		2072	ev_stat *w = (ev_stat *)w_;
		2073	w_ = w_->next; /* lets us add this watcher */
		2074
		2075	w->wd = -1;
		2076
		2077	if (fs_fd >= 0)
		2078	infy_add (EV_A_ w); /* re-add, no matter what */
		2079	else
		2080	ev_timer_start (EV_A_ &w->timer);
		2081	}
		2082
		2083	}
		2084	}
		2085
		2086	#endif
		2087
1147	void	2088	void
		2089	ev_stat_stat (EV_P_ ev_stat *w)
		2090	{
		2091	if (lstat (w->path, &w->attr) < 0)
		2092	w->attr.st_nlink = 0;
		2093	else if (!w->attr.st_nlink)
		2094	w->attr.st_nlink = 1;
		2095	}
		2096
		2097	static void noinline
		2098	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2099	{
		2100	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2101
		2102	/* we copy this here each the time so that */
		2103	/* prev has the old value when the callback gets invoked */
		2104	w->prev = w->attr;
		2105	ev_stat_stat (EV_A_ w);
		2106
		2107	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2108	if (
		2109	w->prev.st_dev != w->attr.st_dev
		2110	|| w->prev.st_ino != w->attr.st_ino
		2111	|| w->prev.st_mode != w->attr.st_mode
		2112	|| w->prev.st_nlink != w->attr.st_nlink
		2113	|| w->prev.st_uid != w->attr.st_uid
		2114	|| w->prev.st_gid != w->attr.st_gid
		2115	|| w->prev.st_rdev != w->attr.st_rdev
		2116	|| w->prev.st_size != w->attr.st_size
		2117	|| w->prev.st_atime != w->attr.st_atime
		2118	|| w->prev.st_mtime != w->attr.st_mtime
		2119	|| w->prev.st_ctime != w->attr.st_ctime
		2120	) {
		2121	#if EV_USE_INOTIFY
		2122	infy_del (EV_A_ w);
		2123	infy_add (EV_A_ w);
		2124	ev_stat_stat (EV_A_ w); /* avoid race... */
		2125	#endif
		2126
		2127	ev_feed_event (EV_A_ w, EV_STAT);
		2128	}
		2129	}
		2130
		2131	void
		2132	ev_stat_start (EV_P_ ev_stat *w)
		2133	{
		2134	if (expect_false (ev_is_active (w)))
		2135	return;
		2136
		2137	/* since we use memcmp, we need to clear any padding data etc. */
		2138	memset (&w->prev, 0, sizeof (ev_statdata));
		2139	memset (&w->attr, 0, sizeof (ev_statdata));
		2140
		2141	ev_stat_stat (EV_A_ w);
		2142
		2143	if (w->interval < MIN_STAT_INTERVAL)
		2144	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2145
		2146	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2147	ev_set_priority (&w->timer, ev_priority (w));
		2148
		2149	#if EV_USE_INOTIFY
		2150	infy_init (EV_A);
		2151
		2152	if (fs_fd >= 0)
		2153	infy_add (EV_A_ w);
		2154	else
		2155	#endif
		2156	ev_timer_start (EV_A_ &w->timer);
		2157
		2158	ev_start (EV_A_ (W)w, 1);
		2159	}
		2160
		2161	void
		2162	ev_stat_stop (EV_P_ ev_stat *w)
		2163	{
		2164	clear_pending (EV_A_ (W)w);
		2165	if (expect_false (!ev_is_active (w)))
		2166	return;
		2167
		2168	#if EV_USE_INOTIFY
		2169	infy_del (EV_A_ w);
		2170	#endif
		2171	ev_timer_stop (EV_A_ &w->timer);
		2172
		2173	ev_stop (EV_A_ (W)w);
		2174	}
		2175	#endif
		2176
		2177	#if EV_IDLE_ENABLE
		2178	void
		2179	ev_idle_start (EV_P_ ev_idle *w)
		2180	{
		2181	if (expect_false (ev_is_active (w)))
		2182	return;
		2183
		2184	pri_adjust (EV_A_ (W)w);
		2185
		2186	{
		2187	int active = ++idlecnt [ABSPRI (w)];
		2188
		2189	++idleall;
		2190	ev_start (EV_A_ (W)w, active);
		2191
		2192	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2193	idles [ABSPRI (w)][active - 1] = w;
		2194	}
		2195	}
		2196
		2197	void
		2198	ev_idle_stop (EV_P_ ev_idle *w)
		2199	{
		2200	clear_pending (EV_A_ (W)w);
		2201	if (expect_false (!ev_is_active (w)))
		2202	return;
		2203
		2204	{
		2205	int active = ((W)w)->active;
		2206
		2207	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2208	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2209
		2210	ev_stop (EV_A_ (W)w);
		2211	--idleall;
		2212	}
		2213	}
		2214	#endif
		2215
		2216	void
1148	ev_prepare_start (EV_P_ struct ev_prepare *w)	2217	ev_prepare_start (EV_P_ ev_prepare *w)
1149	{	2218	{
1150	if (ev_is_active (w))	2219	if (expect_false (ev_is_active (w)))
1151	return;	2220	return;
1152		2221
1153	ev_start (EV_A_ (W)w, ++preparecnt);	2222	ev_start (EV_A_ (W)w, ++preparecnt);
1154	array_needsize (prepares, preparemax, preparecnt, );	2223	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1155	prepares [preparecnt - 1] = w;	2224	prepares [preparecnt - 1] = w;
1156	}	2225	}
1157		2226
1158	void	2227	void
1159	ev_prepare_stop (EV_P_ struct ev_prepare *w)	2228	ev_prepare_stop (EV_P_ ev_prepare *w)
1160	{	2229	{
1161	ev_clear_pending (EV_A_ (W)w);	2230	clear_pending (EV_A_ (W)w);
1162	if (ev_is_active (w))	2231	if (expect_false (!ev_is_active (w)))
1163	return;	2232	return;
1164		2233
		2234	{
		2235	int active = ((W)w)->active;
1165	prepares [w->active - 1] = prepares [--preparecnt];	2236	prepares [active - 1] = prepares [--preparecnt];
		2237	((W)prepares [active - 1])->active = active;
		2238	}
		2239
1166	ev_stop (EV_A_ (W)w);	2240	ev_stop (EV_A_ (W)w);
1167	}	2241	}
1168		2242
1169	void	2243	void
1170	ev_check_start (EV_P_ struct ev_check *w)	2244	ev_check_start (EV_P_ ev_check *w)
1171	{	2245	{
1172	if (ev_is_active (w))	2246	if (expect_false (ev_is_active (w)))
1173	return;	2247	return;
1174		2248
1175	ev_start (EV_A_ (W)w, ++checkcnt);	2249	ev_start (EV_A_ (W)w, ++checkcnt);
1176	array_needsize (checks, checkmax, checkcnt, );	2250	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1177	checks [checkcnt - 1] = w;	2251	checks [checkcnt - 1] = w;
1178	}	2252	}
1179		2253
1180	void	2254	void
1181	ev_check_stop (EV_P_ struct ev_check *w)	2255	ev_check_stop (EV_P_ ev_check *w)
1182	{	2256	{
1183	ev_clear_pending (EV_A_ (W)w);	2257	clear_pending (EV_A_ (W)w);
1184	if (ev_is_active (w))	2258	if (expect_false (!ev_is_active (w)))
1185	return;	2259	return;
1186		2260
		2261	{
		2262	int active = ((W)w)->active;
1187	checks [w->active - 1] = checks [--checkcnt];	2263	checks [active - 1] = checks [--checkcnt];
		2264	((W)checks [active - 1])->active = active;
		2265	}
		2266
1188	ev_stop (EV_A_ (W)w);	2267	ev_stop (EV_A_ (W)w);
1189	}	2268	}
1190		2269
1191	void	2270	#if EV_EMBED_ENABLE
1192	ev_child_start (EV_P_ struct ev_child *w)	2271	void noinline
		2272	ev_embed_sweep (EV_P_ ev_embed *w)
1193	{	2273	{
		2274	ev_loop (w->other, EVLOOP_NONBLOCK);
		2275	}
		2276
		2277	static void
		2278	embed_io_cb (EV_P_ ev_io *io, int revents)
		2279	{
		2280	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2281
1194	if (ev_is_active (w))	2282	if (ev_cb (w))
		2283	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2284	else
		2285	ev_loop (w->other, EVLOOP_NONBLOCK);
		2286	}
		2287
		2288	static void
		2289	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2290	{
		2291	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2292
		2293	{
		2294	struct ev_loop *loop = w->other;
		2295
		2296	while (fdchangecnt)
		2297	{
		2298	fd_reify (EV_A);
		2299	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2300	}
		2301	}
		2302	}
		2303
		2304	#if 0
		2305	static void
		2306	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2307	{
		2308	ev_idle_stop (EV_A_ idle);
		2309	}
		2310	#endif
		2311
		2312	void
		2313	ev_embed_start (EV_P_ ev_embed *w)
		2314	{
		2315	if (expect_false (ev_is_active (w)))
1195	return;	2316	return;
		2317
		2318	{
		2319	struct ev_loop *loop = w->other;
		2320	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2321	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
		2322	}
		2323
		2324	ev_set_priority (&w->io, ev_priority (w));
		2325	ev_io_start (EV_A_ &w->io);
		2326
		2327	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2328	ev_set_priority (&w->prepare, EV_MINPRI);
		2329	ev_prepare_start (EV_A_ &w->prepare);
		2330
		2331	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
1196		2332
1197	ev_start (EV_A_ (W)w, 1);	2333	ev_start (EV_A_ (W)w, 1);
1198	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1199	}	2334	}
1200		2335
1201	void	2336	void
1202	ev_child_stop (EV_P_ struct ev_child *w)	2337	ev_embed_stop (EV_P_ ev_embed *w)
1203	{	2338	{
1204	ev_clear_pending (EV_A_ (W)w);	2339	clear_pending (EV_A_ (W)w);
1205	if (ev_is_active (w))	2340	if (expect_false (!ev_is_active (w)))
1206	return;	2341	return;
1207		2342
1208	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2343	ev_io_stop (EV_A_ &w->io);
		2344	ev_prepare_stop (EV_A_ &w->prepare);
		2345
1209	ev_stop (EV_A_ (W)w);	2346	ev_stop (EV_A_ (W)w);
1210	}	2347	}
		2348	#endif
		2349
		2350	#if EV_FORK_ENABLE
		2351	void
		2352	ev_fork_start (EV_P_ ev_fork *w)
		2353	{
		2354	if (expect_false (ev_is_active (w)))
		2355	return;
		2356
		2357	ev_start (EV_A_ (W)w, ++forkcnt);
		2358	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2359	forks [forkcnt - 1] = w;
		2360	}
		2361
		2362	void
		2363	ev_fork_stop (EV_P_ ev_fork *w)
		2364	{
		2365	clear_pending (EV_A_ (W)w);
		2366	if (expect_false (!ev_is_active (w)))
		2367	return;
		2368
		2369	{
		2370	int active = ((W)w)->active;
		2371	forks [active - 1] = forks [--forkcnt];
		2372	((W)forks [active - 1])->active = active;
		2373	}
		2374
		2375	ev_stop (EV_A_ (W)w);
		2376	}
		2377	#endif
1211		2378
1212	/*****************************************************************************/	2379	/*****************************************************************************/
1213		2380
1214	struct ev_once	2381	struct ev_once
1215	{	2382	{
1216	struct ev_io io;	2383	ev_io io;
1217	struct ev_timer to;	2384	ev_timer to;
1218	void (*cb)(int revents, void *arg);	2385	void (*cb)(int revents, void *arg);
1219	void *arg;	2386	void *arg;
1220	};	2387	};
1221		2388
1222	static void	2389	static void
…		…
1225	void (*cb)(int revents, void *arg) = once->cb;	2392	void (*cb)(int revents, void *arg) = once->cb;
1226	void *arg = once->arg;	2393	void *arg = once->arg;
1227		2394
1228	ev_io_stop (EV_A_ &once->io);	2395	ev_io_stop (EV_A_ &once->io);
1229	ev_timer_stop (EV_A_ &once->to);	2396	ev_timer_stop (EV_A_ &once->to);
1230	free (once);	2397	ev_free (once);
1231		2398
1232	cb (revents, arg);	2399	cb (revents, arg);
1233	}	2400	}
1234		2401
1235	static void	2402	static void
1236	once_cb_io (EV_P_ struct ev_io *w, int revents)	2403	once_cb_io (EV_P_ ev_io *w, int revents)
1237	{	2404	{
1238	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2405	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1239	}	2406	}
1240		2407
1241	static void	2408	static void
1242	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2409	once_cb_to (EV_P_ ev_timer *w, int revents)
1243	{	2410	{
1244	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2411	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1245	}	2412	}
1246		2413
1247	void	2414	void
1248	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2415	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1249	{	2416	{
1250	struct ev_once *once = malloc (sizeof (struct ev_once));	2417	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1251		2418
1252	if (!once)	2419	if (expect_false (!once))
		2420	{
1253	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2421	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1254	else	2422	return;
1255	{	2423	}
		2424
1256	once->cb = cb;	2425	once->cb = cb;
1257	once->arg = arg;	2426	once->arg = arg;
1258		2427
1259	ev_watcher_init (&once->io, once_cb_io);	2428	ev_init (&once->io, once_cb_io);
1260	if (fd >= 0)	2429	if (fd >= 0)
1261	{	2430	{
1262	ev_io_set (&once->io, fd, events);	2431	ev_io_set (&once->io, fd, events);
1263	ev_io_start (EV_A_ &once->io);	2432	ev_io_start (EV_A_ &once->io);
1264	}	2433	}
1265		2434
1266	ev_watcher_init (&once->to, once_cb_to);	2435	ev_init (&once->to, once_cb_to);
1267	if (timeout >= 0.)	2436	if (timeout >= 0.)
1268	{	2437	{
1269	ev_timer_set (&once->to, timeout, 0.);	2438	ev_timer_set (&once->to, timeout, 0.);
1270	ev_timer_start (EV_A_ &once->to);	2439	ev_timer_start (EV_A_ &once->to);
1271	}
1272	}
1273	}
1274
1275	/*****************************************************************************/
1276
1277	#if 0
1278
1279	struct ev_io wio;
1280
1281	static void
1282	sin_cb (struct ev_io *w, int revents)
1283	{
1284	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1285	}
1286
1287	static void
1288	ocb (struct ev_timer *w, int revents)
1289	{
1290	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1291	ev_timer_stop (w);
1292	ev_timer_start (w);
1293	}
1294
1295	static void
1296	scb (struct ev_signal *w, int revents)
1297	{
1298	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1299	ev_io_stop (&wio);
1300	ev_io_start (&wio);
1301	}
1302
1303	static void
1304	gcb (struct ev_signal *w, int revents)
1305	{
1306	fprintf (stderr, "generic %x\n", revents);
1307
1308	}
1309
1310	int main (void)
1311	{
1312	ev_init (0);
1313
1314	ev_io_init (&wio, sin_cb, 0, EV_READ);
1315	ev_io_start (&wio);
1316
1317	struct ev_timer t[10000];
1318
1319	#if 0
1320	int i;
1321	for (i = 0; i < 10000; ++i)
1322	{	2440	}
1323	struct ev_timer *w = t + i;
1324	ev_watcher_init (w, ocb, i);
1325	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1326	ev_timer_start (w);
1327	if (drand48 () < 0.5)
1328	ev_timer_stop (w);
1329	}
1330	#endif
1331
1332	struct ev_timer t1;
1333	ev_timer_init (&t1, ocb, 5, 10);
1334	ev_timer_start (&t1);
1335
1336	struct ev_signal sig;
1337	ev_signal_init (&sig, scb, SIGQUIT);
1338	ev_signal_start (&sig);
1339
1340	struct ev_check cw;
1341	ev_check_init (&cw, gcb);
1342	ev_check_start (&cw);
1343
1344	struct ev_idle iw;
1345	ev_idle_init (&iw, gcb);
1346	ev_idle_start (&iw);
1347
1348	ev_loop (0);
1349
1350	return 0;
1351	}	2441	}
1352		2442
		2443	#if EV_MULTIPLICITY
		2444	#include "ev_wrap.h"
1353	#endif	2445	#endif
1354		2446
		2447	#ifdef __cplusplus
		2448	}
		2449	#endif
1355		2450
1356
1357

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