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Comparing libev/ev.c (file contents):
Revision 1.52 by root, Sat Nov 3 22:10:39 2007 UTC vs.
Revision 1.202 by root, Sat Dec 29 16:19:36 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
118	static ev_tstamp now_floor, mn_now, diff; /* monotonic clock */	293	#if EV_USE_MONOTONIC
119	static ev_tstamp rt_now;	294	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
120	static int method;	295	/* giving it a reasonably high chance of working on typical architetcures */
121		296	static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
122	static int have_monotonic; /* runtime */
123
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
125	static void (*method_modify)(EV_P_ int fd, int oev, int nev);
126	static void (*method_poll)(EV_P_ ev_tstamp timeout);
127
128	static int activecnt; /* number of active events */
129
130	#if EV_USE_SELECT
131	static unsigned char *vec_ri, *vec_ro, *vec_wi, *vec_wo;
132	static int vec_max;
133	#endif	297	#endif
134		298
135	#if EV_USEV_POLL	299	#ifdef _WIN32
136	static struct pollfd *polls;	300	# include "ev_win32.c"
137	static int pollmax, pollcnt;
138	static int *pollidxs; /* maps fds into structure indices */
139	static int pollidxmax;
140	#endif
141
142	#if EV_USE_EPOLL
143	static int epoll_fd = -1;
144
145	static struct epoll_event *events;
146	static int eventmax;
147	#endif
148
149	#if EV_USE_KQUEUE
150	static int kqueue_fd;
151	static struct kevent *kqueue_changes;
152	static int kqueue_changemax, kqueue_changecnt;
153	static struct kevent *kqueue_events;
154	static int kqueue_eventmax;
155	#endif	301	#endif
156		302
157	/*****************************************************************************/	303	/*****************************************************************************/
158		304
159	inline ev_tstamp	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
		355	typedef struct
		356	{
		357	WL head;
		358	unsigned char events;
		359	unsigned char reify;
		360	#if EV_SELECT_IS_WINSOCKET
		361	SOCKET handle;
		362	#endif
		363	} ANFD;
		364
		365	typedef struct
		366	{
		367	W w;
		368	int events;
		369	} ANPENDING;
		370
		371	#if EV_USE_INOTIFY
		372	typedef struct
		373	{
		374	WL head;
		375	} ANFS;
		376	#endif
		377
		378	#if EV_MULTIPLICITY
		379
		380	struct ev_loop
		381	{
		382	ev_tstamp ev_rt_now;
		383	#define ev_rt_now ((loop)->ev_rt_now)
		384	#define VAR(name,decl) decl;
		385	#include "ev_vars.h"
		386	#undef VAR
		387	};
		388	#include "ev_wrap.h"
		389
		390	static struct ev_loop default_loop_struct;
		391	struct ev_loop *ev_default_loop_ptr;
		392
		393	#else
		394
		395	ev_tstamp ev_rt_now;
		396	#define VAR(name,decl) static decl;
		397	#include "ev_vars.h"
		398	#undef VAR
		399
		400	static int ev_default_loop_ptr;
		401
		402	#endif
		403
		404	/*****************************************************************************/
		405
		406	ev_tstamp
160	ev_time (void)	407	ev_time (void)
161	{	408	{
162	#if EV_USE_REALTIME	409	#if EV_USE_REALTIME
163	struct timespec ts;	410	struct timespec ts;
164	clock_gettime (CLOCK_REALTIME, &ts);	411	clock_gettime (CLOCK_REALTIME, &ts);
…		…
168	gettimeofday (&tv, 0);	415	gettimeofday (&tv, 0);
169	return tv.tv_sec + tv.tv_usec * 1e-6;	416	return tv.tv_sec + tv.tv_usec * 1e-6;
170	#endif	417	#endif
171	}	418	}
172		419
173	inline ev_tstamp	420	ev_tstamp inline_size
174	get_clock (void)	421	get_clock (void)
175	{	422	{
176	#if EV_USE_MONOTONIC	423	#if EV_USE_MONOTONIC
177	if (expect_true (have_monotonic))	424	if (expect_true (have_monotonic))
178	{	425	{
…		…
183	#endif	430	#endif
184		431
185	return ev_time ();	432	return ev_time ();
186	}	433	}
187		434
		435	#if EV_MULTIPLICITY
188	ev_tstamp	436	ev_tstamp
189	ev_now (EV_P)	437	ev_now (EV_P)
190	{	438	{
191	return rt_now;	439	return ev_rt_now;
192	}	440	}
		441	#endif
193		442
194	#define array_roundsize(base,n) ((n) | 4 & ~3)	443	void
195		444	ev_sleep (ev_tstamp delay)
196	#define array_needsize(base,cur,cnt,init) \	445	{
197	if (expect_false ((cnt) > cur)) \	446	if (delay > 0.)
198	{ \
199	int newcnt = cur; \
200	do \
201	{ \
202	newcnt = array_roundsize (base, newcnt << 1); \
203	} \
204	while ((cnt) > newcnt); \
205	\
206	base = realloc (base, sizeof (*base) * (newcnt)); \
207	init (base + cur, newcnt - cur); \
208	cur = newcnt; \
209	}	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	}
210		467
211	/*****************************************************************************/	468	/*****************************************************************************/
212		469
213	typedef struct	470	int inline_size
		471	array_nextsize (int elem, int cur, int cnt)
214	{	472	{
215	struct ev_watcher_list *head;	473	int ncur = cur + 1;
216	unsigned char events;
217	unsigned char reify;
218	} ANFD;
219		474
220	static ANFD *anfds;	475	do
221	static int anfdmax;	476	ncur <<= 1;
		477	while (cnt > ncur);
222		478
223	static void	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
224	anfds_init (ANFD *base, int count)	551	anfds_init (ANFD *base, int count)
225	{	552	{
226	while (count--)	553	while (count--)
227	{	554	{
228	base->head = 0;	555	base->head = 0;
…		…
231		558
232	++base;	559	++base;
233	}	560	}
234	}	561	}
235		562
236	typedef struct	563	void inline_speed
237	{
238	W w;
239	int events;
240	} ANPENDING;
241
242	static ANPENDING *pendings [NUMPRI];
243	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
244
245	static void
246	event (EV_P_ W w, int events)
247	{
248	if (w->pending)
249	{
250	pendings [ABSPRI (w)][w->pending - 1].events |= events;
251	return;
252	}
253
254	w->pending = ++pendingcnt [ABSPRI (w)];
255	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
256	pendings [ABSPRI (w)][w->pending - 1].w = w;
257	pendings [ABSPRI (w)][w->pending - 1].events = events;
258	}
259
260	static void
261	queue_events (EV_P_ W *events, int eventcnt, int type)
262	{
263	int i;
264
265	for (i = 0; i < eventcnt; ++i)
266	event (EV_A_ events [i], type);
267	}
268
269	static void
270	fd_event (EV_P_ int fd, int events)	564	fd_event (EV_P_ int fd, int revents)
271	{	565	{
272	ANFD *anfd = anfds + fd;	566	ANFD *anfd = anfds + fd;
273	struct ev_io *w;	567	ev_io *w;
274		568
275	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)
276	{	570	{
277	int ev = w->events & events;	571	int ev = w->events & revents;
278		572
279	if (ev)	573	if (ev)
280	event (EV_A_ (W)w, ev);	574	ev_feed_event (EV_A_ (W)w, ev);
281	}	575	}
282	}	576	}
283		577
284	/*****************************************************************************/	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	}
285		584
286	static int *fdchanges;	585	void inline_size
287	static int fdchangemax, fdchangecnt;
288
289	static void
290	fd_reify (EV_P)	586	fd_reify (EV_P)
291	{	587	{
292	int i;	588	int i;
293		589
294	for (i = 0; i < fdchangecnt; ++i)	590	for (i = 0; i < fdchangecnt; ++i)
295	{	591	{
296	int fd = fdchanges [i];	592	int fd = fdchanges [i];
297	ANFD *anfd = anfds + fd;	593	ANFD *anfd = anfds + fd;
298	struct ev_io *w;	594	ev_io *w;
299		595
300	int events = 0;	596	unsigned char events = 0;
301		597
302	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)
303	events |= w->events;	599	events |= (unsigned char)w->events;
304		600
305	anfd->reify = 0;	601	#if EV_SELECT_IS_WINSOCKET
306		602	if (events)
307	if (anfd->events != events)
308	{	603	{
309	method_modify (EV_A_ fd, anfd->events, events);	604	unsigned long argp;
310	anfd->events = events;	605	#ifdef EV_FD_TO_WIN32_HANDLE
		606	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		607	#else
		608	anfd->handle = _get_osfhandle (fd);
		609	#endif
		610	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
311	}	611	}
		612	#endif
		613
		614	{
		615	unsigned char o_events = anfd->events;
		616	unsigned char o_reify = anfd->reify;
		617
		618	anfd->reify = 0;
		619	anfd->events = events;
		620
		621	if (o_events != events || o_reify & EV_IOFDSET)
		622	backend_modify (EV_A_ fd, o_events, events);
		623	}
312	}	624	}
313		625
314	fdchangecnt = 0;	626	fdchangecnt = 0;
315	}	627	}
316		628
317	static void	629	void inline_size
318	fd_change (EV_P_ int fd)	630	fd_change (EV_P_ int fd, int flags)
319	{	631	{
320	if (anfds [fd].reify || fdchangecnt < 0)	632	unsigned char reify = anfds [fd].reify;
321	return;
322
323	anfds [fd].reify = 1;	633	anfds [fd].reify |= flags;
324		634
		635	if (expect_true (!reify))
		636	{
325	++fdchangecnt;	637	++fdchangecnt;
326	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	638	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
327	fdchanges [fdchangecnt - 1] = fd;	639	fdchanges [fdchangecnt - 1] = fd;
		640	}
328	}	641	}
329		642
330	static void	643	void inline_speed
331	fd_kill (EV_P_ int fd)	644	fd_kill (EV_P_ int fd)
332	{	645	{
333	struct ev_io *w;	646	ev_io *w;
334		647
335	while ((w = (struct ev_io *)anfds [fd].head))	648	while ((w = (ev_io *)anfds [fd].head))
336	{	649	{
337	ev_io_stop (EV_A_ w);	650	ev_io_stop (EV_A_ w);
338	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	651	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
339	}	652	}
		653	}
		654
		655	int inline_size
		656	fd_valid (int fd)
		657	{
		658	#ifdef _WIN32
		659	return _get_osfhandle (fd) != -1;
		660	#else
		661	return fcntl (fd, F_GETFD) != -1;
		662	#endif
340	}	663	}
341		664
342	/* called on EBADF to verify fds */	665	/* called on EBADF to verify fds */
343	static void	666	static void noinline
344	fd_ebadf (EV_P)	667	fd_ebadf (EV_P)
345	{	668	{
346	int fd;	669	int fd;
347		670
348	for (fd = 0; fd < anfdmax; ++fd)	671	for (fd = 0; fd < anfdmax; ++fd)
349	if (anfds [fd].events)	672	if (anfds [fd].events)
350	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	673	if (!fd_valid (fd) == -1 && errno == EBADF)
351	fd_kill (EV_A_ fd);	674	fd_kill (EV_A_ fd);
352	}	675	}
353		676
354	/* called on ENOMEM in select/poll to kill some fds and retry */	677	/* called on ENOMEM in select/poll to kill some fds and retry */
355	static void	678	static void noinline
356	fd_enomem (EV_P)	679	fd_enomem (EV_P)
357	{	680	{
358	int fd = anfdmax;	681	int fd;
359		682
360	while (fd--)	683	for (fd = anfdmax; fd--; )
361	if (anfds [fd].events)	684	if (anfds [fd].events)
362	{	685	{
363	close (fd);
364	fd_kill (EV_A_ fd);	686	fd_kill (EV_A_ fd);
365	return;	687	return;
366	}	688	}
367	}	689	}
368		690
		691	/* usually called after fork if backend needs to re-arm all fds from scratch */
		692	static void noinline
		693	fd_rearm_all (EV_P)
		694	{
		695	int fd;
		696
		697	for (fd = 0; fd < anfdmax; ++fd)
		698	if (anfds [fd].events)
		699	{
		700	anfds [fd].events = 0;
		701	fd_change (EV_A_ fd, EV_IOFDSET | 1);
		702	}
		703	}
		704
369	/*****************************************************************************/	705	/*****************************************************************************/
370		706
371	static struct ev_timer **timers;	707	void inline_speed
372	static int timermax, timercnt;
373
374	static struct ev_periodic **periodics;
375	static int periodicmax, periodiccnt;
376
377	static void
378	upheap (WT *timers, int k)	708	upheap (WT *heap, int k)
379	{	709	{
380	WT w = timers [k];	710	WT w = heap [k];
381		711
382	while (k && timers [k >> 1]->at > w->at)	712	while (k)
383	{
384	timers [k] = timers [k >> 1];
385	timers [k]->active = k + 1;
386	k >>= 1;
387	}	713	{
388
389	timers [k] = w;
390	timers [k]->active = k + 1;
391
392	}
393
394	static void
395	downheap (WT *timers, int N, int k)
396	{
397	WT w = timers [k];
398
399	while (k < (N >> 1))
400	{
401	int j = k << 1;	714	int p = (k - 1) >> 1;
402		715
403	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	716	if (heap [p]->at <= w->at)
404	++j;
405
406	if (w->at <= timers [j]->at)
407	break;	717	break;
408		718
409	timers [k] = timers [j];	719	heap [k] = heap [p];
410	timers [k]->active = k + 1;	720	((W)heap [k])->active = k + 1;
411	k = j;	721	k = p;
		722	}
		723
		724	heap [k] = w;
		725	((W)heap [k])->active = k + 1;
		726	}
		727
		728	void inline_speed
		729	downheap (WT *heap, int N, int k)
		730	{
		731	WT w = heap [k];
		732
		733	for (;;)
412	}	734	{
		735	int c = (k << 1) + 1;
413		736
		737	if (c >= N)
		738	break;
		739
		740	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		741	? 1 : 0;
		742
		743	if (w->at <= heap [c]->at)
		744	break;
		745
		746	heap [k] = heap [c];
		747	((W)heap [k])->active = k + 1;
		748
		749	k = c;
		750	}
		751
414	timers [k] = w;	752	heap [k] = w;
415	timers [k]->active = k + 1;	753	((W)heap [k])->active = k + 1;
		754	}
		755
		756	void inline_size
		757	adjustheap (WT *heap, int N, int k)
		758	{
		759	upheap (heap, k);
		760	downheap (heap, N, k);
416	}	761	}
417		762
418	/*****************************************************************************/	763	/*****************************************************************************/
419		764
420	typedef struct	765	typedef struct
421	{	766	{
422	struct ev_watcher_list *head;	767	WL head;
423	sig_atomic_t volatile gotsig;	768	sig_atomic_t volatile gotsig;
424	} ANSIG;	769	} ANSIG;
425		770
426	static ANSIG *signals;	771	static ANSIG *signals;
427	static int signalmax;	772	static int signalmax;
428		773
429	static int sigpipe [2];	774	static int sigpipe [2];
430	static sig_atomic_t volatile gotsig;	775	static sig_atomic_t volatile gotsig;
431	static struct ev_io sigev;	776	static ev_io sigev;
432		777
433	static void	778	void inline_size
434	signals_init (ANSIG *base, int count)	779	signals_init (ANSIG *base, int count)
435	{	780	{
436	while (count--)	781	while (count--)
437	{	782	{
438	base->head = 0;	783	base->head = 0;
…		…
443	}	788	}
444		789
445	static void	790	static void
446	sighandler (int signum)	791	sighandler (int signum)
447	{	792	{
		793	#if _WIN32
		794	signal (signum, sighandler);
		795	#endif
		796
448	signals [signum - 1].gotsig = 1;	797	signals [signum - 1].gotsig = 1;
449		798
450	if (!gotsig)	799	if (!gotsig)
451	{	800	{
452	int old_errno = errno;	801	int old_errno = errno;
…		…
454	write (sigpipe [1], &signum, 1);	803	write (sigpipe [1], &signum, 1);
455	errno = old_errno;	804	errno = old_errno;
456	}	805	}
457	}	806	}
458		807
		808	void noinline
		809	ev_feed_signal_event (EV_P_ int signum)
		810	{
		811	WL w;
		812
		813	#if EV_MULTIPLICITY
		814	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		815	#endif
		816
		817	--signum;
		818
		819	if (signum < 0 || signum >= signalmax)
		820	return;
		821
		822	signals [signum].gotsig = 0;
		823
		824	for (w = signals [signum].head; w; w = w->next)
		825	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		826	}
		827
459	static void	828	static void
460	sigcb (EV_P_ struct ev_io *iow, int revents)	829	sigcb (EV_P_ ev_io *iow, int revents)
461	{	830	{
462	struct ev_watcher_list *w;
463	int signum;	831	int signum;
464		832
465	read (sigpipe [0], &revents, 1);	833	read (sigpipe [0], &revents, 1);
466	gotsig = 0;	834	gotsig = 0;
467		835
468	for (signum = signalmax; signum--; )	836	for (signum = signalmax; signum--; )
469	if (signals [signum].gotsig)	837	if (signals [signum].gotsig)
		838	ev_feed_signal_event (EV_A_ signum + 1);
		839	}
		840
		841	void inline_speed
		842	fd_intern (int fd)
		843	{
		844	#ifdef _WIN32
		845	int arg = 1;
		846	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		847	#else
		848	fcntl (fd, F_SETFD, FD_CLOEXEC);
		849	fcntl (fd, F_SETFL, O_NONBLOCK);
		850	#endif
		851	}
		852
		853	static void noinline
		854	siginit (EV_P)
		855	{
		856	fd_intern (sigpipe [0]);
		857	fd_intern (sigpipe [1]);
		858
		859	ev_io_set (&sigev, sigpipe [0], EV_READ);
		860	ev_io_start (EV_A_ &sigev);
		861	ev_unref (EV_A); /* child watcher should not keep loop alive */
		862	}
		863
		864	/*****************************************************************************/
		865
		866	static WL childs [EV_PID_HASHSIZE];
		867
		868	#ifndef _WIN32
		869
		870	static ev_signal childev;
		871
		872	void inline_speed
		873	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		874	{
		875	ev_child *w;
		876
		877	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		878	if (w->pid == pid || !w->pid)
470	{	879	{
471	signals [signum].gotsig = 0;	880	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
472		881	w->rpid = pid;
473	for (w = signals [signum].head; w; w = w->next)	882	w->rstatus = status;
474	event (EV_A_ (W)w, EV_SIGNAL);	883	ev_feed_event (EV_A_ (W)w, EV_CHILD);
475	}	884	}
476	}	885	}
477
478	static void
479	siginit (EV_P)
480	{
481	#ifndef WIN32
482	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
483	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
484
485	/* rather than sort out wether we really need nb, set it */
486	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
487	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
488	#endif
489
490	ev_io_set (&sigev, sigpipe [0], EV_READ);
491	ev_io_start (&sigev);
492	ev_unref (EV_A); /* child watcher should not keep loop alive */
493	}
494
495	/*****************************************************************************/
496
497	static struct ev_idle **idles;
498	static int idlemax, idlecnt;
499
500	static struct ev_prepare **prepares;
501	static int preparemax, preparecnt;
502
503	static struct ev_check **checks;
504	static int checkmax, checkcnt;
505
506	/*****************************************************************************/
507
508	static struct ev_child *childs [PID_HASHSIZE];
509	static struct ev_signal childev;
510
511	#ifndef WIN32
512		886
513	#ifndef WCONTINUED	887	#ifndef WCONTINUED
514	# define WCONTINUED 0	888	# define WCONTINUED 0
515	#endif	889	#endif
516		890
517	static void	891	static void
518	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
519	{
520	struct ev_child *w;
521
522	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
523	if (w->pid == pid || !w->pid)
524	{
525	w->priority = sw->priority; /* need to do it *now* */
526	w->rpid = pid;
527	w->rstatus = status;
528	event (EV_A_ (W)w, EV_CHILD);
529	}
530	}
531
532	static void
533	childcb (EV_P_ struct ev_signal *sw, int revents)	892	childcb (EV_P_ ev_signal *sw, int revents)
534	{	893	{
535	int pid, status;	894	int pid, status;
536		895
		896	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
537	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	897	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
538	{	898	if (!WCONTINUED
		899	|| errno != EINVAL
		900	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		901	return;
		902
539	/* make sure we are called again until all childs have been reaped */	903	/* make sure we are called again until all childs have been reaped */
		904	/* we need to do it this way so that the callback gets called before we continue */
540	event (EV_A_ (W)sw, EV_SIGNAL);	905	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
541		906
542	child_reap (EV_A_ sw, pid, pid, status);	907	child_reap (EV_A_ sw, pid, pid, status);
		908	if (EV_PID_HASHSIZE > 1)
543	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	909	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
544	}
545	}	910	}
546		911
547	#endif	912	#endif
548		913
549	/*****************************************************************************/	914	/*****************************************************************************/
550		915
		916	#if EV_USE_PORT
		917	# include "ev_port.c"
		918	#endif
551	#if EV_USE_KQUEUE	919	#if EV_USE_KQUEUE
552	# include "ev_kqueue.c"	920	# include "ev_kqueue.c"
553	#endif	921	#endif
554	#if EV_USE_EPOLL	922	#if EV_USE_EPOLL
555	# include "ev_epoll.c"	923	# include "ev_epoll.c"
556	#endif	924	#endif
557	#if EV_USEV_POLL	925	#if EV_USE_POLL
558	# include "ev_poll.c"	926	# include "ev_poll.c"
559	#endif	927	#endif
560	#if EV_USE_SELECT	928	#if EV_USE_SELECT
561	# include "ev_select.c"	929	# include "ev_select.c"
562	#endif	930	#endif
…		…
572	{	940	{
573	return EV_VERSION_MINOR;	941	return EV_VERSION_MINOR;
574	}	942	}
575		943
576	/* return true if we are running with elevated privileges and should ignore env variables */	944	/* return true if we are running with elevated privileges and should ignore env variables */
577	static int	945	int inline_size
578	enable_secure (void)	946	enable_secure (void)
579	{	947	{
580	#ifdef WIN32	948	#ifdef _WIN32
581	return 0;	949	return 0;
582	#else	950	#else
583	return getuid () != geteuid ()	951	return getuid () != geteuid ()
584	|| getgid () != getegid ();	952	|| getgid () != getegid ();
585	#endif	953	#endif
586	}	954	}
587		955
588	int	956	unsigned int
589	ev_method (EV_P)	957	ev_supported_backends (void)
590	{	958	{
591	return method;	959	unsigned int flags = 0;
592	}
593		960
594	int	961	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
595	ev_init (EV_P_ int methods)	962	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		963	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		964	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		965	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		966
		967	return flags;
		968	}
		969
		970	unsigned int
		971	ev_recommended_backends (void)
596	{	972	{
597	if (!method)	973	unsigned int flags = ev_supported_backends ();
		974
		975	#ifndef __NetBSD__
		976	/* kqueue is borked on everything but netbsd apparently */
		977	/* it usually doesn't work correctly on anything but sockets and pipes */
		978	flags &= ~EVBACKEND_KQUEUE;
		979	#endif
		980	#ifdef __APPLE__
		981	// flags &= ~EVBACKEND_KQUEUE; for documentation
		982	flags &= ~EVBACKEND_POLL;
		983	#endif
		984
		985	return flags;
		986	}
		987
		988	unsigned int
		989	ev_embeddable_backends (void)
		990	{
		991	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
		992
		993	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		994	/* please fix it and tell me how to detect the fix */
		995	flags &= ~EVBACKEND_EPOLL;
		996
		997	return flags;
		998	}
		999
		1000	unsigned int
		1001	ev_backend (EV_P)
		1002	{
		1003	return backend;
		1004	}
		1005
		1006	unsigned int
		1007	ev_loop_count (EV_P)
		1008	{
		1009	return loop_count;
		1010	}
		1011
		1012	void
		1013	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1014	{
		1015	io_blocktime = interval;
		1016	}
		1017
		1018	void
		1019	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1020	{
		1021	timeout_blocktime = interval;
		1022	}
		1023
		1024	static void noinline
		1025	loop_init (EV_P_ unsigned int flags)
		1026	{
		1027	if (!backend)
598	{	1028	{
599	#if EV_USE_MONOTONIC	1029	#if EV_USE_MONOTONIC
600	{	1030	{
601	struct timespec ts;	1031	struct timespec ts;
602	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1032	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
603	have_monotonic = 1;	1033	have_monotonic = 1;
604	}	1034	}
605	#endif	1035	#endif
606		1036
607	rt_now = ev_time ();	1037	ev_rt_now = ev_time ();
608	mn_now = get_clock ();	1038	mn_now = get_clock ();
609	now_floor = mn_now;	1039	now_floor = mn_now;
610	diff = rt_now - mn_now;	1040	rtmn_diff = ev_rt_now - mn_now;
611		1041
612	if (pipe (sigpipe))	1042	io_blocktime = 0.;
613	return 0;	1043	timeout_blocktime = 0.;
614		1044
615	if (methods == EVMETHOD_AUTO)	1045	/* pid check not overridable via env */
616	if (!enable_secure () && getenv ("LIBmethodS"))	1046	#ifndef _WIN32
617	methods = atoi (getenv ("LIBmethodS"));	1047	if (flags & EVFLAG_FORKCHECK)
618	else	1048	curpid = getpid ();
619	methods = EVMETHOD_ANY;	1049	#endif
620		1050
621	method = 0;	1051	if (!(flags & EVFLAG_NOENV)
		1052	&& !enable_secure ()
		1053	&& getenv ("LIBEV_FLAGS"))
		1054	flags = atoi (getenv ("LIBEV_FLAGS"));
		1055
		1056	if (!(flags & 0x0000ffffUL))
		1057	flags |= ev_recommended_backends ();
		1058
		1059	backend = 0;
		1060	backend_fd = -1;
		1061	#if EV_USE_INOTIFY
		1062	fs_fd = -2;
		1063	#endif
		1064
		1065	#if EV_USE_PORT
		1066	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		1067	#endif
622	#if EV_USE_KQUEUE	1068	#if EV_USE_KQUEUE
623	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	1069	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
624	#endif	1070	#endif
625	#if EV_USE_EPOLL	1071	#if EV_USE_EPOLL
626	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	1072	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
627	#endif	1073	#endif
628	#if EV_USEV_POLL	1074	#if EV_USE_POLL
629	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	1075	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
630	#endif	1076	#endif
631	#if EV_USE_SELECT	1077	#if EV_USE_SELECT
632	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	1078	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
633	#endif	1079	#endif
634		1080
635	if (method)	1081	ev_init (&sigev, sigcb);
		1082	ev_set_priority (&sigev, EV_MAXPRI);
		1083	}
		1084	}
		1085
		1086	static void noinline
		1087	loop_destroy (EV_P)
		1088	{
		1089	int i;
		1090
		1091	#if EV_USE_INOTIFY
		1092	if (fs_fd >= 0)
		1093	close (fs_fd);
		1094	#endif
		1095
		1096	if (backend_fd >= 0)
		1097	close (backend_fd);
		1098
		1099	#if EV_USE_PORT
		1100	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		1101	#endif
		1102	#if EV_USE_KQUEUE
		1103	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		1104	#endif
		1105	#if EV_USE_EPOLL
		1106	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		1107	#endif
		1108	#if EV_USE_POLL
		1109	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		1110	#endif
		1111	#if EV_USE_SELECT
		1112	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		1113	#endif
		1114
		1115	for (i = NUMPRI; i--; )
		1116	{
		1117	array_free (pending, [i]);
		1118	#if EV_IDLE_ENABLE
		1119	array_free (idle, [i]);
		1120	#endif
		1121	}
		1122
		1123	ev_free (anfds); anfdmax = 0;
		1124
		1125	/* have to use the microsoft-never-gets-it-right macro */
		1126	array_free (fdchange, EMPTY);
		1127	array_free (timer, EMPTY);
		1128	#if EV_PERIODIC_ENABLE
		1129	array_free (periodic, EMPTY);
		1130	#endif
		1131	#if EV_FORK_ENABLE
		1132	array_free (fork, EMPTY);
		1133	#endif
		1134	array_free (prepare, EMPTY);
		1135	array_free (check, EMPTY);
		1136
		1137	backend = 0;
		1138	}
		1139
		1140	void inline_size infy_fork (EV_P);
		1141
		1142	void inline_size
		1143	loop_fork (EV_P)
		1144	{
		1145	#if EV_USE_PORT
		1146	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1147	#endif
		1148	#if EV_USE_KQUEUE
		1149	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1150	#endif
		1151	#if EV_USE_EPOLL
		1152	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1153	#endif
		1154	#if EV_USE_INOTIFY
		1155	infy_fork (EV_A);
		1156	#endif
		1157
		1158	if (ev_is_active (&sigev))
		1159	{
		1160	/* default loop */
		1161
		1162	ev_ref (EV_A);
		1163	ev_io_stop (EV_A_ &sigev);
		1164	close (sigpipe [0]);
		1165	close (sigpipe [1]);
		1166
		1167	while (pipe (sigpipe))
		1168	syserr ("(libev) error creating pipe");
		1169
		1170	siginit (EV_A);
		1171	}
		1172
		1173	postfork = 0;
		1174	}
		1175
		1176	#if EV_MULTIPLICITY
		1177	struct ev_loop *
		1178	ev_loop_new (unsigned int flags)
		1179	{
		1180	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		1181
		1182	memset (loop, 0, sizeof (struct ev_loop));
		1183
		1184	loop_init (EV_A_ flags);
		1185
		1186	if (ev_backend (EV_A))
		1187	return loop;
		1188
		1189	return 0;
		1190	}
		1191
		1192	void
		1193	ev_loop_destroy (EV_P)
		1194	{
		1195	loop_destroy (EV_A);
		1196	ev_free (loop);
		1197	}
		1198
		1199	void
		1200	ev_loop_fork (EV_P)
		1201	{
		1202	postfork = 1;
		1203	}
		1204
		1205	#endif
		1206
		1207	#if EV_MULTIPLICITY
		1208	struct ev_loop *
		1209	ev_default_loop_init (unsigned int flags)
		1210	#else
		1211	int
		1212	ev_default_loop (unsigned int flags)
		1213	#endif
		1214	{
		1215	if (sigpipe [0] == sigpipe [1])
		1216	if (pipe (sigpipe))
		1217	return 0;
		1218
		1219	if (!ev_default_loop_ptr)
		1220	{
		1221	#if EV_MULTIPLICITY
		1222	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		1223	#else
		1224	ev_default_loop_ptr = 1;
		1225	#endif
		1226
		1227	loop_init (EV_A_ flags);
		1228
		1229	if (ev_backend (EV_A))
636	{	1230	{
637	ev_watcher_init (&sigev, sigcb);
638	ev_set_priority (&sigev, EV_MAXPRI);
639	siginit (EV_A);	1231	siginit (EV_A);
640		1232
641	#ifndef WIN32	1233	#ifndef _WIN32
642	ev_signal_init (&childev, childcb, SIGCHLD);	1234	ev_signal_init (&childev, childcb, SIGCHLD);
643	ev_set_priority (&childev, EV_MAXPRI);	1235	ev_set_priority (&childev, EV_MAXPRI);
644	ev_signal_start (EV_A_ &childev);	1236	ev_signal_start (EV_A_ &childev);
645	ev_unref (EV_A); /* child watcher should not keep loop alive */	1237	ev_unref (EV_A); /* child watcher should not keep loop alive */
646	#endif	1238	#endif
647	}	1239	}
		1240	else
		1241	ev_default_loop_ptr = 0;
648	}	1242	}
649		1243
650	return method;	1244	return ev_default_loop_ptr;
		1245	}
		1246
		1247	void
		1248	ev_default_destroy (void)
		1249	{
		1250	#if EV_MULTIPLICITY
		1251	struct ev_loop *loop = ev_default_loop_ptr;
		1252	#endif
		1253
		1254	#ifndef _WIN32
		1255	ev_ref (EV_A); /* child watcher */
		1256	ev_signal_stop (EV_A_ &childev);
		1257	#endif
		1258
		1259	ev_ref (EV_A); /* signal watcher */
		1260	ev_io_stop (EV_A_ &sigev);
		1261
		1262	close (sigpipe [0]); sigpipe [0] = 0;
		1263	close (sigpipe [1]); sigpipe [1] = 0;
		1264
		1265	loop_destroy (EV_A);
		1266	}
		1267
		1268	void
		1269	ev_default_fork (void)
		1270	{
		1271	#if EV_MULTIPLICITY
		1272	struct ev_loop *loop = ev_default_loop_ptr;
		1273	#endif
		1274
		1275	if (backend)
		1276	postfork = 1;
651	}	1277	}
652		1278
653	/*****************************************************************************/	1279	/*****************************************************************************/
654		1280
655	void	1281	void
656	ev_fork_prepare (void)	1282	ev_invoke (EV_P_ void *w, int revents)
657	{	1283	{
658	/* nop */	1284	EV_CB_INVOKE ((W)w, revents);
659	}	1285	}
660		1286
661	void	1287	void inline_speed
662	ev_fork_parent (void)
663	{
664	/* nop */
665	}
666
667	void
668	ev_fork_child (void)
669	{
670	#if EV_USE_EPOLL
671	if (method == EVMETHOD_EPOLL)
672	epoll_postfork_child ();
673	#endif
674
675	ev_io_stop (&sigev);
676	close (sigpipe [0]);
677	close (sigpipe [1]);
678	pipe (sigpipe);
679	siginit ();
680	}
681
682	/*****************************************************************************/
683
684	static void
685	call_pending (EV_P)	1288	call_pending (EV_P)
686	{	1289	{
687	int pri;	1290	int pri;
688		1291
689	for (pri = NUMPRI; pri--; )	1292	for (pri = NUMPRI; pri--; )
690	while (pendingcnt [pri])	1293	while (pendingcnt [pri])
691	{	1294	{
692	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1295	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
693		1296
694	if (p->w)	1297	if (expect_true (p->w))
695	{	1298	{
		1299	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1300
696	p->w->pending = 0;	1301	p->w->pending = 0;
697	p->w->cb (EV_A_ p->w, p->events);	1302	EV_CB_INVOKE (p->w, p->events);
698	}	1303	}
699	}	1304	}
700	}	1305	}
701		1306
702	static void	1307	void inline_size
703	timers_reify (EV_P)	1308	timers_reify (EV_P)
704	{	1309	{
705	while (timercnt && timers [0]->at <= mn_now)	1310	while (timercnt && ((WT)timers [0])->at <= mn_now)
706	{	1311	{
707	struct ev_timer *w = timers [0];	1312	ev_timer *w = (ev_timer *)timers [0];
		1313
		1314	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
708		1315
709	/* first reschedule or stop timer */	1316	/* first reschedule or stop timer */
710	if (w->repeat)	1317	if (w->repeat)
711	{	1318	{
712	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1319	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1320
713	w->at = mn_now + w->repeat;	1321	((WT)w)->at += w->repeat;
		1322	if (((WT)w)->at < mn_now)
		1323	((WT)w)->at = mn_now;
		1324
714	downheap ((WT *)timers, timercnt, 0);	1325	downheap (timers, timercnt, 0);
715	}	1326	}
716	else	1327	else
717	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1328	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
718		1329
719	event ((W)w, EV_TIMEOUT);	1330	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
720	}	1331	}
721	}	1332	}
722		1333
723	static void	1334	#if EV_PERIODIC_ENABLE
		1335	void inline_size
724	periodics_reify (EV_P)	1336	periodics_reify (EV_P)
725	{	1337	{
726	while (periodiccnt && periodics [0]->at <= rt_now)	1338	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
727	{	1339	{
728	struct ev_periodic *w = periodics [0];	1340	ev_periodic *w = (ev_periodic *)periodics [0];
		1341
		1342	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
729		1343
730	/* first reschedule or stop timer */	1344	/* first reschedule or stop timer */
731	if (w->interval)	1345	if (w->reschedule_cb)
732	{	1346	{
		1347	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
		1348	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1349	downheap (periodics, periodiccnt, 0);
		1350	}
		1351	else if (w->interval)
		1352	{
733	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1353	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1354	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
734	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1355	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
735	downheap ((WT *)periodics, periodiccnt, 0);	1356	downheap (periodics, periodiccnt, 0);
736	}	1357	}
737	else	1358	else
738	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1359	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
739		1360
740	event (EV_A_ (W)w, EV_PERIODIC);	1361	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
741	}	1362	}
742	}	1363	}
743		1364
744	static void	1365	static void noinline
745	periodics_reschedule (EV_P_ ev_tstamp diff)	1366	periodics_reschedule (EV_P)
746	{	1367	{
747	int i;	1368	int i;
748		1369
749	/* adjust periodics after time jump */	1370	/* adjust periodics after time jump */
750	for (i = 0; i < periodiccnt; ++i)	1371	for (i = 0; i < periodiccnt; ++i)
751	{	1372	{
752	struct ev_periodic *w = periodics [i];	1373	ev_periodic *w = (ev_periodic *)periodics [i];
753		1374
		1375	if (w->reschedule_cb)
		1376	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
754	if (w->interval)	1377	else if (w->interval)
		1378	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1379	}
		1380
		1381	/* now rebuild the heap */
		1382	for (i = periodiccnt >> 1; i--; )
		1383	downheap (periodics, periodiccnt, i);
		1384	}
		1385	#endif
		1386
		1387	#if EV_IDLE_ENABLE
		1388	void inline_size
		1389	idle_reify (EV_P)
		1390	{
		1391	if (expect_false (idleall))
		1392	{
		1393	int pri;
		1394
		1395	for (pri = NUMPRI; pri--; )
755	{	1396	{
756	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1397	if (pendingcnt [pri])
		1398	break;
757		1399
758	if (fabs (diff) >= 1e-4)	1400	if (idlecnt [pri])
759	{	1401	{
760	ev_periodic_stop (EV_A_ w);	1402	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
761	ev_periodic_start (EV_A_ w);	1403	break;
762
763	i = 0; /* restart loop, inefficient, but time jumps should be rare */
764	}	1404	}
765	}	1405	}
766	}	1406	}
767	}	1407	}
		1408	#endif
768		1409
769	inline int	1410	void inline_speed
770	time_update_monotonic (EV_P)	1411	time_update (EV_P_ ev_tstamp max_block)
771	{
772	mn_now = get_clock ();
773
774	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
775	{
776	rt_now = mn_now + diff;
777	return 0;
778	}
779	else
780	{
781	now_floor = mn_now;
782	rt_now = ev_time ();
783	return 1;
784	}
785	}
786
787	static void
788	time_update (EV_P)
789	{	1412	{
790	int i;	1413	int i;
791		1414
792	#if EV_USE_MONOTONIC	1415	#if EV_USE_MONOTONIC
793	if (expect_true (have_monotonic))	1416	if (expect_true (have_monotonic))
794	{	1417	{
795	if (time_update_monotonic (EV_A))	1418	ev_tstamp odiff = rtmn_diff;
		1419
		1420	mn_now = get_clock ();
		1421
		1422	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1423	/* interpolate in the meantime */
		1424	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
796	{	1425	{
797	ev_tstamp odiff = diff;	1426	ev_rt_now = rtmn_diff + mn_now;
798		1427	return;
799	for (i = 4; --i; ) /* loop a few times, before making important decisions */
800	{
801	diff = rt_now - mn_now;
802
803	if (fabs (odiff - diff) < MIN_TIMEJUMP)
804	return; /* all is well */
805
806	rt_now = ev_time ();
807	mn_now = get_clock ();
808	now_floor = mn_now;
809	}
810
811	periodics_reschedule (EV_A_ diff - odiff);
812	/* no timer adjustment, as the monotonic clock doesn't jump */
813	}	1428	}
		1429
		1430	now_floor = mn_now;
		1431	ev_rt_now = ev_time ();
		1432
		1433	/* loop a few times, before making important decisions.
		1434	* on the choice of "4": one iteration isn't enough,
		1435	* in case we get preempted during the calls to
		1436	* ev_time and get_clock. a second call is almost guaranteed
		1437	* to succeed in that case, though. and looping a few more times
		1438	* doesn't hurt either as we only do this on time-jumps or
		1439	* in the unlikely event of having been preempted here.
		1440	*/
		1441	for (i = 4; --i; )
		1442	{
		1443	rtmn_diff = ev_rt_now - mn_now;
		1444
		1445	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1446	return; /* all is well */
		1447
		1448	ev_rt_now = ev_time ();
		1449	mn_now = get_clock ();
		1450	now_floor = mn_now;
		1451	}
		1452
		1453	# if EV_PERIODIC_ENABLE
		1454	periodics_reschedule (EV_A);
		1455	# endif
		1456	/* no timer adjustment, as the monotonic clock doesn't jump */
		1457	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
814	}	1458	}
815	else	1459	else
816	#endif	1460	#endif
817	{	1461	{
818	rt_now = ev_time ();	1462	ev_rt_now = ev_time ();
819		1463
820	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1464	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
821	{	1465	{
		1466	#if EV_PERIODIC_ENABLE
822	periodics_reschedule (EV_A_ rt_now - mn_now);	1467	periodics_reschedule (EV_A);
823		1468	#endif
824	/* adjust timers. this is easy, as the offset is the same for all */	1469	/* adjust timers. this is easy, as the offset is the same for all of them */
825	for (i = 0; i < timercnt; ++i)	1470	for (i = 0; i < timercnt; ++i)
826	timers [i]->at += diff;	1471	((WT)timers [i])->at += ev_rt_now - mn_now;
827	}	1472	}
828		1473
829	mn_now = rt_now;	1474	mn_now = ev_rt_now;
830	}	1475	}
831	}	1476	}
832		1477
833	void	1478	void
834	ev_ref (EV_P)	1479	ev_ref (EV_P)
…		…
845	static int loop_done;	1490	static int loop_done;
846		1491
847	void	1492	void
848	ev_loop (EV_P_ int flags)	1493	ev_loop (EV_P_ int flags)
849	{	1494	{
850	double block;
851	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1495	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1496	? EVUNLOOP_ONE
		1497	: EVUNLOOP_CANCEL;
		1498
		1499	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
852		1500
853	do	1501	do
854	{	1502	{
		1503	#ifndef _WIN32
		1504	if (expect_false (curpid)) /* penalise the forking check even more */
		1505	if (expect_false (getpid () != curpid))
		1506	{
		1507	curpid = getpid ();
		1508	postfork = 1;
		1509	}
		1510	#endif
		1511
		1512	#if EV_FORK_ENABLE
		1513	/* we might have forked, so queue fork handlers */
		1514	if (expect_false (postfork))
		1515	if (forkcnt)
		1516	{
		1517	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1518	call_pending (EV_A);
		1519	}
		1520	#endif
		1521
855	/* queue check watchers (and execute them) */	1522	/* queue prepare watchers (and execute them) */
856	if (expect_false (preparecnt))	1523	if (expect_false (preparecnt))
857	{	1524	{
858	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1525	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
859	call_pending (EV_A);	1526	call_pending (EV_A);
860	}	1527	}
861		1528
		1529	if (expect_false (!activecnt))
		1530	break;
		1531
		1532	/* we might have forked, so reify kernel state if necessary */
		1533	if (expect_false (postfork))
		1534	loop_fork (EV_A);
		1535
862	/* update fd-related kernel structures */	1536	/* update fd-related kernel structures */
863	fd_reify (EV_A);	1537	fd_reify (EV_A);
864		1538
865	/* calculate blocking time */	1539	/* calculate blocking time */
		1540	{
		1541	ev_tstamp waittime = 0.;
		1542	ev_tstamp sleeptime = 0.;
866		1543
867	/* we only need this for !monotonic clockor timers, but as we basically	1544	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
868	always have timers, we just calculate it always */
869	#if EV_USE_MONOTONIC
870	if (expect_true (have_monotonic))
871	time_update_monotonic (EV_A);
872	else
873	#endif
874	{	1545	{
875	rt_now = ev_time ();	1546	/* update time to cancel out callback processing overhead */
876	mn_now = rt_now;	1547	time_update (EV_A_ 1e100);
877	}
878		1548
879	if (flags & EVLOOP_NONBLOCK || idlecnt)
880	block = 0.;
881	else
882	{
883	block = MAX_BLOCKTIME;	1549	waittime = MAX_BLOCKTIME;
884		1550
885	if (timercnt)	1551	if (timercnt)
886	{	1552	{
887	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1553	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
888	if (block > to) block = to;	1554	if (waittime > to) waittime = to;
889	}	1555	}
890		1556
		1557	#if EV_PERIODIC_ENABLE
891	if (periodiccnt)	1558	if (periodiccnt)
892	{	1559	{
893	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1560	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
894	if (block > to) block = to;	1561	if (waittime > to) waittime = to;
895	}	1562	}
		1563	#endif
896		1564
897	if (block < 0.) block = 0.;	1565	if (expect_false (waittime < timeout_blocktime))
		1566	waittime = timeout_blocktime;
		1567
		1568	sleeptime = waittime - backend_fudge;
		1569
		1570	if (expect_true (sleeptime > io_blocktime))
		1571	sleeptime = io_blocktime;
		1572
		1573	if (sleeptime)
		1574	{
		1575	ev_sleep (sleeptime);
		1576	waittime -= sleeptime;
		1577	}
898	}	1578	}
899		1579
900	method_poll (EV_A_ block);	1580	++loop_count;
		1581	backend_poll (EV_A_ waittime);
901		1582
902	/* update rt_now, do magic */	1583	/* update ev_rt_now, do magic */
903	time_update (EV_A);	1584	time_update (EV_A_ waittime + sleeptime);
		1585	}
904		1586
905	/* queue pending timers and reschedule them */	1587	/* queue pending timers and reschedule them */
906	timers_reify (EV_A); /* relative timers called last */	1588	timers_reify (EV_A); /* relative timers called last */
		1589	#if EV_PERIODIC_ENABLE
907	periodics_reify (EV_A); /* absolute timers called first */	1590	periodics_reify (EV_A); /* absolute timers called first */
		1591	#endif
908		1592
		1593	#if EV_IDLE_ENABLE
909	/* queue idle watchers unless io or timers are pending */	1594	/* queue idle watchers unless other events are pending */
910	if (!pendingcnt)	1595	idle_reify (EV_A);
911	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1596	#endif
912		1597
913	/* queue check watchers, to be executed first */	1598	/* queue check watchers, to be executed first */
914	if (checkcnt)	1599	if (expect_false (checkcnt))
915	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1600	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
916		1601
917	call_pending (EV_A);	1602	call_pending (EV_A);
		1603
918	}	1604	}
919	while (activecnt && !loop_done);	1605	while (expect_true (activecnt && !loop_done));
920		1606
921	if (loop_done != 2)	1607	if (loop_done == EVUNLOOP_ONE)
922	loop_done = 0;	1608	loop_done = EVUNLOOP_CANCEL;
923	}	1609	}
924		1610
925	void	1611	void
926	ev_unloop (EV_P_ int how)	1612	ev_unloop (EV_P_ int how)
927	{	1613	{
928	loop_done = how;	1614	loop_done = how;
929	}	1615	}
930		1616
931	/*****************************************************************************/	1617	/*****************************************************************************/
932		1618
933	inline void	1619	void inline_size
934	wlist_add (WL *head, WL elem)	1620	wlist_add (WL *head, WL elem)
935	{	1621	{
936	elem->next = *head;	1622	elem->next = *head;
937	*head = elem;	1623	*head = elem;
938	}	1624	}
939		1625
940	inline void	1626	void inline_size
941	wlist_del (WL *head, WL elem)	1627	wlist_del (WL *head, WL elem)
942	{	1628	{
943	while (*head)	1629	while (*head)
944	{	1630	{
945	if (*head == elem)	1631	if (*head == elem)
…		…
950		1636
951	head = &(*head)->next;	1637	head = &(*head)->next;
952	}	1638	}
953	}	1639	}
954		1640
955	inline void	1641	void inline_speed
956	ev_clear_pending (EV_P_ W w)	1642	clear_pending (EV_P_ W w)
957	{	1643	{
958	if (w->pending)	1644	if (w->pending)
959	{	1645	{
960	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1646	pendings [ABSPRI (w)][w->pending - 1].w = 0;
961	w->pending = 0;	1647	w->pending = 0;
962	}	1648	}
963	}	1649	}
964		1650
965	inline void	1651	int
		1652	ev_clear_pending (EV_P_ void *w)
		1653	{
		1654	W w_ = (W)w;
		1655	int pending = w_->pending;
		1656
		1657	if (expect_true (pending))
		1658	{
		1659	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1660	w_->pending = 0;
		1661	p->w = 0;
		1662	return p->events;
		1663	}
		1664	else
		1665	return 0;
		1666	}
		1667
		1668	void inline_size
		1669	pri_adjust (EV_P_ W w)
		1670	{
		1671	int pri = w->priority;
		1672	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1673	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1674	w->priority = pri;
		1675	}
		1676
		1677	void inline_speed
966	ev_start (EV_P_ W w, int active)	1678	ev_start (EV_P_ W w, int active)
967	{	1679	{
968	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1680	pri_adjust (EV_A_ w);
969	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
970
971	w->active = active;	1681	w->active = active;
972	ev_ref (EV_A);	1682	ev_ref (EV_A);
973	}	1683	}
974		1684
975	inline void	1685	void inline_size
976	ev_stop (EV_P_ W w)	1686	ev_stop (EV_P_ W w)
977	{	1687	{
978	ev_unref (EV_A);	1688	ev_unref (EV_A);
979	w->active = 0;	1689	w->active = 0;
980	}	1690	}
981		1691
982	/*****************************************************************************/	1692	/*****************************************************************************/
983		1693
984	void	1694	void noinline
985	ev_io_start (EV_P_ struct ev_io *w)	1695	ev_io_start (EV_P_ ev_io *w)
986	{	1696	{
987	int fd = w->fd;	1697	int fd = w->fd;
988		1698
989	if (ev_is_active (w))	1699	if (expect_false (ev_is_active (w)))
990	return;	1700	return;
991		1701
992	assert (("ev_io_start called with negative fd", fd >= 0));	1702	assert (("ev_io_start called with negative fd", fd >= 0));
993		1703
994	ev_start (EV_A_ (W)w, 1);	1704	ev_start (EV_A_ (W)w, 1);
995	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1705	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
996	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1706	wlist_add (&anfds[fd].head, (WL)w);
997		1707
998	fd_change (EV_A_ fd);	1708	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1709	w->events &= ~EV_IOFDSET;
999	}	1710	}
1000		1711
1001	void	1712	void noinline
1002	ev_io_stop (EV_P_ struct ev_io *w)	1713	ev_io_stop (EV_P_ ev_io *w)
1003	{	1714	{
1004	ev_clear_pending (EV_A_ (W)w);	1715	clear_pending (EV_A_ (W)w);
1005	if (!ev_is_active (w))	1716	if (expect_false (!ev_is_active (w)))
1006	return;	1717	return;
1007		1718
		1719	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1720
1008	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1721	wlist_del (&anfds[w->fd].head, (WL)w);
1009	ev_stop (EV_A_ (W)w);	1722	ev_stop (EV_A_ (W)w);
1010		1723
1011	fd_change (EV_A_ w->fd);	1724	fd_change (EV_A_ w->fd, 1);
1012	}	1725	}
1013		1726
1014	void	1727	void noinline
1015	ev_timer_start (EV_P_ struct ev_timer *w)	1728	ev_timer_start (EV_P_ ev_timer *w)
1016	{	1729	{
1017	if (ev_is_active (w))	1730	if (expect_false (ev_is_active (w)))
1018	return;	1731	return;
1019		1732
1020	w->at += mn_now;	1733	((WT)w)->at += mn_now;
1021		1734
1022	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1735	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1023		1736
1024	ev_start (EV_A_ (W)w, ++timercnt);	1737	ev_start (EV_A_ (W)w, ++timercnt);
1025	array_needsize (timers, timermax, timercnt, );	1738	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1026	timers [timercnt - 1] = w;	1739	timers [timercnt - 1] = (WT)w;
1027	upheap ((WT *)timers, timercnt - 1);	1740	upheap (timers, timercnt - 1);
1028	}
1029		1741
1030	void	1742	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1743	}
		1744
		1745	void noinline
1031	ev_timer_stop (EV_P_ struct ev_timer *w)	1746	ev_timer_stop (EV_P_ ev_timer *w)
1032	{	1747	{
1033	ev_clear_pending (EV_A_ (W)w);	1748	clear_pending (EV_A_ (W)w);
1034	if (!ev_is_active (w))	1749	if (expect_false (!ev_is_active (w)))
1035	return;	1750	return;
1036		1751
1037	if (w->active < timercnt--)	1752	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
		1753
		1754	{
		1755	int active = ((W)w)->active;
		1756
		1757	if (expect_true (--active < --timercnt))
1038	{	1758	{
1039	timers [w->active - 1] = timers [timercnt];	1759	timers [active] = timers [timercnt];
1040	downheap ((WT *)timers, timercnt, w->active - 1);	1760	adjustheap (timers, timercnt, active);
1041	}	1761	}
		1762	}
1042		1763
1043	w->at = w->repeat;	1764	((WT)w)->at -= mn_now;
1044		1765
1045	ev_stop (EV_A_ (W)w);	1766	ev_stop (EV_A_ (W)w);
1046	}	1767	}
1047		1768
1048	void	1769	void noinline
1049	ev_timer_again (EV_P_ struct ev_timer *w)	1770	ev_timer_again (EV_P_ ev_timer *w)
1050	{	1771	{
1051	if (ev_is_active (w))	1772	if (ev_is_active (w))
1052	{	1773	{
1053	if (w->repeat)	1774	if (w->repeat)
1054	{	1775	{
1055	w->at = mn_now + w->repeat;	1776	((WT)w)->at = mn_now + w->repeat;
1056	downheap ((WT *)timers, timercnt, w->active - 1);	1777	adjustheap (timers, timercnt, ((W)w)->active - 1);
1057	}	1778	}
1058	else	1779	else
1059	ev_timer_stop (EV_A_ w);	1780	ev_timer_stop (EV_A_ w);
1060	}	1781	}
1061	else if (w->repeat)	1782	else if (w->repeat)
		1783	{
		1784	w->at = w->repeat;
1062	ev_timer_start (EV_A_ w);	1785	ev_timer_start (EV_A_ w);
		1786	}
1063	}	1787	}
1064		1788
1065	void	1789	#if EV_PERIODIC_ENABLE
		1790	void noinline
1066	ev_periodic_start (EV_P_ struct ev_periodic *w)	1791	ev_periodic_start (EV_P_ ev_periodic *w)
1067	{	1792	{
1068	if (ev_is_active (w))	1793	if (expect_false (ev_is_active (w)))
1069	return;	1794	return;
1070		1795
		1796	if (w->reschedule_cb)
		1797	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1798	else if (w->interval)
		1799	{
1071	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1800	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1072
1073	/* this formula differs from the one in periodic_reify because we do not always round up */	1801	/* this formula differs from the one in periodic_reify because we do not always round up */
1074	if (w->interval)
1075	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1802	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1803	}
		1804	else
		1805	((WT)w)->at = w->offset;
1076		1806
1077	ev_start (EV_A_ (W)w, ++periodiccnt);	1807	ev_start (EV_A_ (W)w, ++periodiccnt);
1078	array_needsize (periodics, periodicmax, periodiccnt, );	1808	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1079	periodics [periodiccnt - 1] = w;	1809	periodics [periodiccnt - 1] = (WT)w;
1080	upheap ((WT *)periodics, periodiccnt - 1);	1810	upheap (periodics, periodiccnt - 1);
1081	}
1082		1811
1083	void	1812	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1813	}
		1814
		1815	void noinline
1084	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1816	ev_periodic_stop (EV_P_ ev_periodic *w)
1085	{	1817	{
1086	ev_clear_pending (EV_A_ (W)w);	1818	clear_pending (EV_A_ (W)w);
1087	if (!ev_is_active (w))	1819	if (expect_false (!ev_is_active (w)))
1088	return;	1820	return;
1089		1821
1090	if (w->active < periodiccnt--)	1822	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
		1823
		1824	{
		1825	int active = ((W)w)->active;
		1826
		1827	if (expect_true (--active < --periodiccnt))
1091	{	1828	{
1092	periodics [w->active - 1] = periodics [periodiccnt];	1829	periodics [active] = periodics [periodiccnt];
1093	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1830	adjustheap (periodics, periodiccnt, active);
1094	}	1831	}
		1832	}
1095		1833
1096	ev_stop (EV_A_ (W)w);	1834	ev_stop (EV_A_ (W)w);
1097	}	1835	}
		1836
		1837	void noinline
		1838	ev_periodic_again (EV_P_ ev_periodic *w)
		1839	{
		1840	/* TODO: use adjustheap and recalculation */
		1841	ev_periodic_stop (EV_A_ w);
		1842	ev_periodic_start (EV_A_ w);
		1843	}
		1844	#endif
1098		1845
1099	#ifndef SA_RESTART	1846	#ifndef SA_RESTART
1100	# define SA_RESTART 0	1847	# define SA_RESTART 0
1101	#endif	1848	#endif
1102		1849
1103	void	1850	void noinline
1104	ev_signal_start (EV_P_ struct ev_signal *w)	1851	ev_signal_start (EV_P_ ev_signal *w)
1105	{	1852	{
		1853	#if EV_MULTIPLICITY
		1854	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1855	#endif
1106	if (ev_is_active (w))	1856	if (expect_false (ev_is_active (w)))
1107	return;	1857	return;
1108		1858
1109	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1859	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1110		1860
		1861	{
		1862	#ifndef _WIN32
		1863	sigset_t full, prev;
		1864	sigfillset (&full);
		1865	sigprocmask (SIG_SETMASK, &full, &prev);
		1866	#endif
		1867
		1868	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1869
		1870	#ifndef _WIN32
		1871	sigprocmask (SIG_SETMASK, &prev, 0);
		1872	#endif
		1873	}
		1874
1111	ev_start (EV_A_ (W)w, 1);	1875	ev_start (EV_A_ (W)w, 1);
1112	array_needsize (signals, signalmax, w->signum, signals_init);
1113	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1876	wlist_add (&signals [w->signum - 1].head, (WL)w);
1114		1877
1115	if (!w->next)	1878	if (!((WL)w)->next)
1116	{	1879	{
		1880	#if _WIN32
		1881	signal (w->signum, sighandler);
		1882	#else
1117	struct sigaction sa;	1883	struct sigaction sa;
1118	sa.sa_handler = sighandler;	1884	sa.sa_handler = sighandler;
1119	sigfillset (&sa.sa_mask);	1885	sigfillset (&sa.sa_mask);
1120	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1886	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1121	sigaction (w->signum, &sa, 0);	1887	sigaction (w->signum, &sa, 0);
		1888	#endif
1122	}	1889	}
1123	}	1890	}
1124		1891
1125	void	1892	void noinline
1126	ev_signal_stop (EV_P_ struct ev_signal *w)	1893	ev_signal_stop (EV_P_ ev_signal *w)
1127	{	1894	{
1128	ev_clear_pending (EV_A_ (W)w);	1895	clear_pending (EV_A_ (W)w);
1129	if (!ev_is_active (w))	1896	if (expect_false (!ev_is_active (w)))
1130	return;	1897	return;
1131		1898
1132	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1899	wlist_del (&signals [w->signum - 1].head, (WL)w);
1133	ev_stop (EV_A_ (W)w);	1900	ev_stop (EV_A_ (W)w);
1134		1901
1135	if (!signals [w->signum - 1].head)	1902	if (!signals [w->signum - 1].head)
1136	signal (w->signum, SIG_DFL);	1903	signal (w->signum, SIG_DFL);
1137	}	1904	}
1138		1905
1139	void	1906	void
1140	ev_idle_start (EV_P_ struct ev_idle *w)	1907	ev_child_start (EV_P_ ev_child *w)
1141	{	1908	{
		1909	#if EV_MULTIPLICITY
		1910	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1911	#endif
1142	if (ev_is_active (w))	1912	if (expect_false (ev_is_active (w)))
1143	return;	1913	return;
1144		1914
1145	ev_start (EV_A_ (W)w, ++idlecnt);	1915	ev_start (EV_A_ (W)w, 1);
1146	array_needsize (idles, idlemax, idlecnt, );	1916	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1147	idles [idlecnt - 1] = w;
1148	}	1917	}
1149		1918
1150	void	1919	void
1151	ev_idle_stop (EV_P_ struct ev_idle *w)	1920	ev_child_stop (EV_P_ ev_child *w)
1152	{	1921	{
1153	ev_clear_pending (EV_A_ (W)w);	1922	clear_pending (EV_A_ (W)w);
1154	if (ev_is_active (w))	1923	if (expect_false (!ev_is_active (w)))
1155	return;	1924	return;
1156		1925
1157	idles [w->active - 1] = idles [--idlecnt];	1926	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1158	ev_stop (EV_A_ (W)w);	1927	ev_stop (EV_A_ (W)w);
1159	}	1928	}
1160		1929
		1930	#if EV_STAT_ENABLE
		1931
		1932	# ifdef _WIN32
		1933	# undef lstat
		1934	# define lstat(a,b) _stati64 (a,b)
		1935	# endif
		1936
		1937	#define DEF_STAT_INTERVAL 5.0074891
		1938	#define MIN_STAT_INTERVAL 0.1074891
		1939
		1940	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1941
		1942	#if EV_USE_INOTIFY
		1943	# define EV_INOTIFY_BUFSIZE 8192
		1944
		1945	static void noinline
		1946	infy_add (EV_P_ ev_stat *w)
		1947	{
		1948	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);
		1949
		1950	if (w->wd < 0)
		1951	{
		1952	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1953
		1954	/* monitor some parent directory for speedup hints */
		1955	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1956	{
		1957	char path [4096];
		1958	strcpy (path, w->path);
		1959
		1960	do
		1961	{
		1962	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1963	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1964
		1965	char *pend = strrchr (path, '/');
		1966
		1967	if (!pend)
		1968	break; /* whoops, no '/', complain to your admin */
		1969
		1970	*pend = 0;
		1971	w->wd = inotify_add_watch (fs_fd, path, mask);
		1972	}
		1973	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1974	}
		1975	}
		1976	else
		1977	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1978
		1979	if (w->wd >= 0)
		1980	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1981	}
		1982
		1983	static void noinline
		1984	infy_del (EV_P_ ev_stat *w)
		1985	{
		1986	int slot;
		1987	int wd = w->wd;
		1988
		1989	if (wd < 0)
		1990	return;
		1991
		1992	w->wd = -2;
		1993	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1994	wlist_del (&fs_hash [slot].head, (WL)w);
		1995
		1996	/* remove this watcher, if others are watching it, they will rearm */
		1997	inotify_rm_watch (fs_fd, wd);
		1998	}
		1999
		2000	static void noinline
		2001	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		2002	{
		2003	if (slot < 0)
		2004	/* overflow, need to check for all hahs slots */
		2005	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2006	infy_wd (EV_A_ slot, wd, ev);
		2007	else
		2008	{
		2009	WL w_;
		2010
		2011	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		2012	{
		2013	ev_stat *w = (ev_stat *)w_;
		2014	w_ = w_->next; /* lets us remove this watcher and all before it */
		2015
		2016	if (w->wd == wd || wd == -1)
		2017	{
		2018	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		2019	{
		2020	w->wd = -1;
		2021	infy_add (EV_A_ w); /* re-add, no matter what */
		2022	}
		2023
		2024	stat_timer_cb (EV_A_ &w->timer, 0);
		2025	}
		2026	}
		2027	}
		2028	}
		2029
		2030	static void
		2031	infy_cb (EV_P_ ev_io *w, int revents)
		2032	{
		2033	char buf [EV_INOTIFY_BUFSIZE];
		2034	struct inotify_event *ev = (struct inotify_event *)buf;
		2035	int ofs;
		2036	int len = read (fs_fd, buf, sizeof (buf));
		2037
		2038	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2039	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2040	}
		2041
		2042	void inline_size
		2043	infy_init (EV_P)
		2044	{
		2045	if (fs_fd != -2)
		2046	return;
		2047
		2048	fs_fd = inotify_init ();
		2049
		2050	if (fs_fd >= 0)
		2051	{
		2052	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2053	ev_set_priority (&fs_w, EV_MAXPRI);
		2054	ev_io_start (EV_A_ &fs_w);
		2055	}
		2056	}
		2057
		2058	void inline_size
		2059	infy_fork (EV_P)
		2060	{
		2061	int slot;
		2062
		2063	if (fs_fd < 0)
		2064	return;
		2065
		2066	close (fs_fd);
		2067	fs_fd = inotify_init ();
		2068
		2069	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2070	{
		2071	WL w_ = fs_hash [slot].head;
		2072	fs_hash [slot].head = 0;
		2073
		2074	while (w_)
		2075	{
		2076	ev_stat *w = (ev_stat *)w_;
		2077	w_ = w_->next; /* lets us add this watcher */
		2078
		2079	w->wd = -1;
		2080
		2081	if (fs_fd >= 0)
		2082	infy_add (EV_A_ w); /* re-add, no matter what */
		2083	else
		2084	ev_timer_start (EV_A_ &w->timer);
		2085	}
		2086
		2087	}
		2088	}
		2089
		2090	#endif
		2091
1161	void	2092	void
		2093	ev_stat_stat (EV_P_ ev_stat *w)
		2094	{
		2095	if (lstat (w->path, &w->attr) < 0)
		2096	w->attr.st_nlink = 0;
		2097	else if (!w->attr.st_nlink)
		2098	w->attr.st_nlink = 1;
		2099	}
		2100
		2101	static void noinline
		2102	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2103	{
		2104	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2105
		2106	/* we copy this here each the time so that */
		2107	/* prev has the old value when the callback gets invoked */
		2108	w->prev = w->attr;
		2109	ev_stat_stat (EV_A_ w);
		2110
		2111	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2112	if (
		2113	w->prev.st_dev != w->attr.st_dev
		2114	|| w->prev.st_ino != w->attr.st_ino
		2115	|| w->prev.st_mode != w->attr.st_mode
		2116	|| w->prev.st_nlink != w->attr.st_nlink
		2117	|| w->prev.st_uid != w->attr.st_uid
		2118	|| w->prev.st_gid != w->attr.st_gid
		2119	|| w->prev.st_rdev != w->attr.st_rdev
		2120	|| w->prev.st_size != w->attr.st_size
		2121	|| w->prev.st_atime != w->attr.st_atime
		2122	|| w->prev.st_mtime != w->attr.st_mtime
		2123	|| w->prev.st_ctime != w->attr.st_ctime
		2124	) {
		2125	#if EV_USE_INOTIFY
		2126	infy_del (EV_A_ w);
		2127	infy_add (EV_A_ w);
		2128	ev_stat_stat (EV_A_ w); /* avoid race... */
		2129	#endif
		2130
		2131	ev_feed_event (EV_A_ w, EV_STAT);
		2132	}
		2133	}
		2134
		2135	void
		2136	ev_stat_start (EV_P_ ev_stat *w)
		2137	{
		2138	if (expect_false (ev_is_active (w)))
		2139	return;
		2140
		2141	/* since we use memcmp, we need to clear any padding data etc. */
		2142	memset (&w->prev, 0, sizeof (ev_statdata));
		2143	memset (&w->attr, 0, sizeof (ev_statdata));
		2144
		2145	ev_stat_stat (EV_A_ w);
		2146
		2147	if (w->interval < MIN_STAT_INTERVAL)
		2148	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2149
		2150	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2151	ev_set_priority (&w->timer, ev_priority (w));
		2152
		2153	#if EV_USE_INOTIFY
		2154	infy_init (EV_A);
		2155
		2156	if (fs_fd >= 0)
		2157	infy_add (EV_A_ w);
		2158	else
		2159	#endif
		2160	ev_timer_start (EV_A_ &w->timer);
		2161
		2162	ev_start (EV_A_ (W)w, 1);
		2163	}
		2164
		2165	void
		2166	ev_stat_stop (EV_P_ ev_stat *w)
		2167	{
		2168	clear_pending (EV_A_ (W)w);
		2169	if (expect_false (!ev_is_active (w)))
		2170	return;
		2171
		2172	#if EV_USE_INOTIFY
		2173	infy_del (EV_A_ w);
		2174	#endif
		2175	ev_timer_stop (EV_A_ &w->timer);
		2176
		2177	ev_stop (EV_A_ (W)w);
		2178	}
		2179	#endif
		2180
		2181	#if EV_IDLE_ENABLE
		2182	void
		2183	ev_idle_start (EV_P_ ev_idle *w)
		2184	{
		2185	if (expect_false (ev_is_active (w)))
		2186	return;
		2187
		2188	pri_adjust (EV_A_ (W)w);
		2189
		2190	{
		2191	int active = ++idlecnt [ABSPRI (w)];
		2192
		2193	++idleall;
		2194	ev_start (EV_A_ (W)w, active);
		2195
		2196	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2197	idles [ABSPRI (w)][active - 1] = w;
		2198	}
		2199	}
		2200
		2201	void
		2202	ev_idle_stop (EV_P_ ev_idle *w)
		2203	{
		2204	clear_pending (EV_A_ (W)w);
		2205	if (expect_false (!ev_is_active (w)))
		2206	return;
		2207
		2208	{
		2209	int active = ((W)w)->active;
		2210
		2211	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2212	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2213
		2214	ev_stop (EV_A_ (W)w);
		2215	--idleall;
		2216	}
		2217	}
		2218	#endif
		2219
		2220	void
1162	ev_prepare_start (EV_P_ struct ev_prepare *w)	2221	ev_prepare_start (EV_P_ ev_prepare *w)
1163	{	2222	{
1164	if (ev_is_active (w))	2223	if (expect_false (ev_is_active (w)))
1165	return;	2224	return;
1166		2225
1167	ev_start (EV_A_ (W)w, ++preparecnt);	2226	ev_start (EV_A_ (W)w, ++preparecnt);
1168	array_needsize (prepares, preparemax, preparecnt, );	2227	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1169	prepares [preparecnt - 1] = w;	2228	prepares [preparecnt - 1] = w;
1170	}	2229	}
1171		2230
1172	void	2231	void
1173	ev_prepare_stop (EV_P_ struct ev_prepare *w)	2232	ev_prepare_stop (EV_P_ ev_prepare *w)
1174	{	2233	{
1175	ev_clear_pending (EV_A_ (W)w);	2234	clear_pending (EV_A_ (W)w);
1176	if (ev_is_active (w))	2235	if (expect_false (!ev_is_active (w)))
1177	return;	2236	return;
1178		2237
		2238	{
		2239	int active = ((W)w)->active;
1179	prepares [w->active - 1] = prepares [--preparecnt];	2240	prepares [active - 1] = prepares [--preparecnt];
		2241	((W)prepares [active - 1])->active = active;
		2242	}
		2243
1180	ev_stop (EV_A_ (W)w);	2244	ev_stop (EV_A_ (W)w);
1181	}	2245	}
1182		2246
1183	void	2247	void
1184	ev_check_start (EV_P_ struct ev_check *w)	2248	ev_check_start (EV_P_ ev_check *w)
1185	{	2249	{
1186	if (ev_is_active (w))	2250	if (expect_false (ev_is_active (w)))
1187	return;	2251	return;
1188		2252
1189	ev_start (EV_A_ (W)w, ++checkcnt);	2253	ev_start (EV_A_ (W)w, ++checkcnt);
1190	array_needsize (checks, checkmax, checkcnt, );	2254	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1191	checks [checkcnt - 1] = w;	2255	checks [checkcnt - 1] = w;
1192	}	2256	}
1193		2257
1194	void	2258	void
1195	ev_check_stop (EV_P_ struct ev_check *w)	2259	ev_check_stop (EV_P_ ev_check *w)
1196	{	2260	{
1197	ev_clear_pending (EV_A_ (W)w);	2261	clear_pending (EV_A_ (W)w);
1198	if (ev_is_active (w))	2262	if (expect_false (!ev_is_active (w)))
1199	return;	2263	return;
1200		2264
		2265	{
		2266	int active = ((W)w)->active;
1201	checks [w->active - 1] = checks [--checkcnt];	2267	checks [active - 1] = checks [--checkcnt];
		2268	((W)checks [active - 1])->active = active;
		2269	}
		2270
1202	ev_stop (EV_A_ (W)w);	2271	ev_stop (EV_A_ (W)w);
1203	}	2272	}
1204		2273
1205	void	2274	#if EV_EMBED_ENABLE
1206	ev_child_start (EV_P_ struct ev_child *w)	2275	void noinline
		2276	ev_embed_sweep (EV_P_ ev_embed *w)
1207	{	2277	{
		2278	ev_loop (w->other, EVLOOP_NONBLOCK);
		2279	}
		2280
		2281	static void
		2282	embed_io_cb (EV_P_ ev_io *io, int revents)
		2283	{
		2284	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2285
1208	if (ev_is_active (w))	2286	if (ev_cb (w))
		2287	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2288	else
		2289	ev_loop (w->other, EVLOOP_NONBLOCK);
		2290	}
		2291
		2292	static void
		2293	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2294	{
		2295	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2296
		2297	{
		2298	struct ev_loop *loop = w->other;
		2299
		2300	while (fdchangecnt)
		2301	{
		2302	fd_reify (EV_A);
		2303	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2304	}
		2305	}
		2306	}
		2307
		2308	#if 0
		2309	static void
		2310	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2311	{
		2312	ev_idle_stop (EV_A_ idle);
		2313	}
		2314	#endif
		2315
		2316	void
		2317	ev_embed_start (EV_P_ ev_embed *w)
		2318	{
		2319	if (expect_false (ev_is_active (w)))
1209	return;	2320	return;
		2321
		2322	{
		2323	struct ev_loop *loop = w->other;
		2324	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2325	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
		2326	}
		2327
		2328	ev_set_priority (&w->io, ev_priority (w));
		2329	ev_io_start (EV_A_ &w->io);
		2330
		2331	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2332	ev_set_priority (&w->prepare, EV_MINPRI);
		2333	ev_prepare_start (EV_A_ &w->prepare);
		2334
		2335	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
1210		2336
1211	ev_start (EV_A_ (W)w, 1);	2337	ev_start (EV_A_ (W)w, 1);
1212	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1213	}	2338	}
1214		2339
1215	void	2340	void
1216	ev_child_stop (EV_P_ struct ev_child *w)	2341	ev_embed_stop (EV_P_ ev_embed *w)
1217	{	2342	{
1218	ev_clear_pending (EV_A_ (W)w);	2343	clear_pending (EV_A_ (W)w);
1219	if (ev_is_active (w))	2344	if (expect_false (!ev_is_active (w)))
1220	return;	2345	return;
1221		2346
1222	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2347	ev_io_stop (EV_A_ &w->io);
		2348	ev_prepare_stop (EV_A_ &w->prepare);
		2349
1223	ev_stop (EV_A_ (W)w);	2350	ev_stop (EV_A_ (W)w);
1224	}	2351	}
		2352	#endif
		2353
		2354	#if EV_FORK_ENABLE
		2355	void
		2356	ev_fork_start (EV_P_ ev_fork *w)
		2357	{
		2358	if (expect_false (ev_is_active (w)))
		2359	return;
		2360
		2361	ev_start (EV_A_ (W)w, ++forkcnt);
		2362	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2363	forks [forkcnt - 1] = w;
		2364	}
		2365
		2366	void
		2367	ev_fork_stop (EV_P_ ev_fork *w)
		2368	{
		2369	clear_pending (EV_A_ (W)w);
		2370	if (expect_false (!ev_is_active (w)))
		2371	return;
		2372
		2373	{
		2374	int active = ((W)w)->active;
		2375	forks [active - 1] = forks [--forkcnt];
		2376	((W)forks [active - 1])->active = active;
		2377	}
		2378
		2379	ev_stop (EV_A_ (W)w);
		2380	}
		2381	#endif
1225		2382
1226	/*****************************************************************************/	2383	/*****************************************************************************/
1227		2384
1228	struct ev_once	2385	struct ev_once
1229	{	2386	{
1230	struct ev_io io;	2387	ev_io io;
1231	struct ev_timer to;	2388	ev_timer to;
1232	void (*cb)(int revents, void *arg);	2389	void (*cb)(int revents, void *arg);
1233	void *arg;	2390	void *arg;
1234	};	2391	};
1235		2392
1236	static void	2393	static void
…		…
1239	void (*cb)(int revents, void *arg) = once->cb;	2396	void (*cb)(int revents, void *arg) = once->cb;
1240	void *arg = once->arg;	2397	void *arg = once->arg;
1241		2398
1242	ev_io_stop (EV_A_ &once->io);	2399	ev_io_stop (EV_A_ &once->io);
1243	ev_timer_stop (EV_A_ &once->to);	2400	ev_timer_stop (EV_A_ &once->to);
1244	free (once);	2401	ev_free (once);
1245		2402
1246	cb (revents, arg);	2403	cb (revents, arg);
1247	}	2404	}
1248		2405
1249	static void	2406	static void
1250	once_cb_io (EV_P_ struct ev_io *w, int revents)	2407	once_cb_io (EV_P_ ev_io *w, int revents)
1251	{	2408	{
1252	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2409	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1253	}	2410	}
1254		2411
1255	static void	2412	static void
1256	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2413	once_cb_to (EV_P_ ev_timer *w, int revents)
1257	{	2414	{
1258	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2415	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1259	}	2416	}
1260		2417
1261	void	2418	void
1262	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2419	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1263	{	2420	{
1264	struct ev_once *once = malloc (sizeof (struct ev_once));	2421	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1265		2422
1266	if (!once)	2423	if (expect_false (!once))
		2424	{
1267	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2425	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1268	else	2426	return;
1269	{	2427	}
		2428
1270	once->cb = cb;	2429	once->cb = cb;
1271	once->arg = arg;	2430	once->arg = arg;
1272		2431
1273	ev_watcher_init (&once->io, once_cb_io);	2432	ev_init (&once->io, once_cb_io);
1274	if (fd >= 0)	2433	if (fd >= 0)
1275	{	2434	{
1276	ev_io_set (&once->io, fd, events);	2435	ev_io_set (&once->io, fd, events);
1277	ev_io_start (EV_A_ &once->io);	2436	ev_io_start (EV_A_ &once->io);
1278	}	2437	}
1279		2438
1280	ev_watcher_init (&once->to, once_cb_to);	2439	ev_init (&once->to, once_cb_to);
1281	if (timeout >= 0.)	2440	if (timeout >= 0.)
1282	{	2441	{
1283	ev_timer_set (&once->to, timeout, 0.);	2442	ev_timer_set (&once->to, timeout, 0.);
1284	ev_timer_start (EV_A_ &once->to);	2443	ev_timer_start (EV_A_ &once->to);
1285	}
1286	}
1287	}
1288
1289	/*****************************************************************************/
1290
1291	#if 0
1292
1293	struct ev_io wio;
1294
1295	static void
1296	sin_cb (struct ev_io *w, int revents)
1297	{
1298	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1299	}
1300
1301	static void
1302	ocb (struct ev_timer *w, int revents)
1303	{
1304	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1305	ev_timer_stop (w);
1306	ev_timer_start (w);
1307	}
1308
1309	static void
1310	scb (struct ev_signal *w, int revents)
1311	{
1312	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1313	ev_io_stop (&wio);
1314	ev_io_start (&wio);
1315	}
1316
1317	static void
1318	gcb (struct ev_signal *w, int revents)
1319	{
1320	fprintf (stderr, "generic %x\n", revents);
1321
1322	}
1323
1324	int main (void)
1325	{
1326	ev_init (0);
1327
1328	ev_io_init (&wio, sin_cb, 0, EV_READ);
1329	ev_io_start (&wio);
1330
1331	struct ev_timer t[10000];
1332
1333	#if 0
1334	int i;
1335	for (i = 0; i < 10000; ++i)
1336	{	2444	}
1337	struct ev_timer *w = t + i;
1338	ev_watcher_init (w, ocb, i);
1339	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1340	ev_timer_start (w);
1341	if (drand48 () < 0.5)
1342	ev_timer_stop (w);
1343	}
1344	#endif
1345
1346	struct ev_timer t1;
1347	ev_timer_init (&t1, ocb, 5, 10);
1348	ev_timer_start (&t1);
1349
1350	struct ev_signal sig;
1351	ev_signal_init (&sig, scb, SIGQUIT);
1352	ev_signal_start (&sig);
1353
1354	struct ev_check cw;
1355	ev_check_init (&cw, gcb);
1356	ev_check_start (&cw);
1357
1358	struct ev_idle iw;
1359	ev_idle_init (&iw, gcb);
1360	ev_idle_start (&iw);
1361
1362	ev_loop (0);
1363
1364	return 0;
1365	}	2445	}
1366		2446
		2447	#if EV_MULTIPLICITY
		2448	#include "ev_wrap.h"
1367	#endif	2449	#endif
1368		2450
		2451	#ifdef __cplusplus
		2452	}
		2453	#endif
1369		2454
1370
1371

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