[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.143 by root, Tue Nov 27 07:27:10 2007 UTC vs.
Revision 1.205 by root, Sun Jan 20 15:37:03 2008 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	*/
31		39
32	#ifdef __cplusplus	40	#ifdef __cplusplus
33	extern "C" {	41	extern "C" {
34	#endif	42	#endif
…		…
51	# ifndef EV_USE_MONOTONIC	59	# ifndef EV_USE_MONOTONIC
52	# define EV_USE_MONOTONIC 0	60	# define EV_USE_MONOTONIC 0
53	# endif	61	# endif
54	# ifndef EV_USE_REALTIME	62	# ifndef EV_USE_REALTIME
55	# define EV_USE_REALTIME 0	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
56	# endif	72	# endif
57	# endif	73	# endif
58		74
59	# ifndef EV_USE_SELECT	75	# ifndef EV_USE_SELECT
60	# if HAVE_SELECT && HAVE_SYS_SELECT_H	76	# if HAVE_SELECT && HAVE_SYS_SELECT_H
…		…
94	# else	110	# else
95	# define EV_USE_PORT 0	111	# define EV_USE_PORT 0
96	# endif	112	# endif
97	# endif	113	# endif
98		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
99	#endif	123	#endif
100		124
101	#include <math.h>	125	#include <math.h>
102	#include <stdlib.h>	126	#include <stdlib.h>
103	#include <fcntl.h>	127	#include <fcntl.h>
…		…
109	#include <errno.h>	133	#include <errno.h>
110	#include <sys/types.h>	134	#include <sys/types.h>
111	#include <time.h>	135	#include <time.h>
112		136
113	#include <signal.h>	137	#include <signal.h>
		138
		139	#ifdef EV_H
		140	# include EV_H
		141	#else
		142	# include "ev.h"
		143	#endif
114		144
115	#ifndef _WIN32	145	#ifndef _WIN32
116	# include <sys/time.h>	146	# include <sys/time.h>
117	# include <sys/wait.h>	147	# include <sys/wait.h>
118	# include <unistd.h>	148	# include <unistd.h>
…		…
132		162
133	#ifndef EV_USE_REALTIME	163	#ifndef EV_USE_REALTIME
134	# define EV_USE_REALTIME 0	164	# define EV_USE_REALTIME 0
135	#endif	165	#endif
136		166
		167	#ifndef EV_USE_NANOSLEEP
		168	# define EV_USE_NANOSLEEP 0
		169	#endif
		170
137	#ifndef EV_USE_SELECT	171	#ifndef EV_USE_SELECT
138	# define EV_USE_SELECT 1	172	# define EV_USE_SELECT 1
139	#endif	173	#endif
140		174
141	#ifndef EV_USE_POLL	175	#ifndef EV_USE_POLL
…		…
156		190
157	#ifndef EV_USE_PORT	191	#ifndef EV_USE_PORT
158	# define EV_USE_PORT 0	192	# define EV_USE_PORT 0
159	#endif	193	#endif
160		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
		213	#endif
		214
161	/**/	215	/**/
162		216
163	#ifndef CLOCK_MONOTONIC	217	#ifndef CLOCK_MONOTONIC
164	# undef EV_USE_MONOTONIC	218	# undef EV_USE_MONOTONIC
165	# define EV_USE_MONOTONIC 0	219	# define EV_USE_MONOTONIC 0
…		…
168	#ifndef CLOCK_REALTIME	222	#ifndef CLOCK_REALTIME
169	# undef EV_USE_REALTIME	223	# undef EV_USE_REALTIME
170	# define EV_USE_REALTIME 0	224	# define EV_USE_REALTIME 0
171	#endif	225	#endif
172		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
173	#if EV_SELECT_IS_WINSOCKET	242	#if EV_SELECT_IS_WINSOCKET
174	# include <winsock.h>	243	# include <winsock.h>
175	#endif	244	#endif
176		245
177	/**/	246	/**/
178		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
179	#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) */
180	#define MAX_BLOCKTIME 59.743 /* 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) */
181	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
182	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* 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 */
183		261
184	#ifdef EV_H
185	# include EV_H
186	#else
187	# include "ev.h"
188	#endif
189
190	#if __GNUC__ >= 3	262	#if __GNUC__ >= 4
191	# define expect(expr,value) __builtin_expect ((expr),(value))	263	# define expect(expr,value) __builtin_expect ((expr),(value))
192	# define inline_size static inline /* inline for codesize */
193	# if EV_MINIMAL
194	# define noinline __attribute__ ((noinline))	264	# define noinline __attribute__ ((noinline))
195	# define inline_speed static noinline
196	# else
197	# define noinline
198	# define inline_speed static inline
199	# endif
200	#else	265	#else
201	# define expect(expr,value) (expr)	266	# define expect(expr,value) (expr)
202	# define inline_speed static
203	# define inline_minimal static
204	# define noinline	267	# define noinline
		268	# if __STDC_VERSION__ < 199901L
		269	# define inline
		270	# endif
205	#endif	271	#endif
206		272
207	#define expect_false(expr) expect ((expr) != 0, 0)	273	#define expect_false(expr) expect ((expr) != 0, 0)
208	#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
209		282
210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	283	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	284	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
212		285
213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	286	#define EMPTY /* required for microsofts broken pseudo-c compiler */
214	#define EMPTY2(a,b) /* used to suppress some warnings */	287	#define EMPTY2(a,b) /* used to suppress some warnings */
215		288
216	typedef ev_watcher *W;	289	typedef ev_watcher *W;
217	typedef ev_watcher_list *WL;	290	typedef ev_watcher_list *WL;
218	typedef ev_watcher_time *WT;	291	typedef ev_watcher_time *WT;
219		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 */
220	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
221		298
222	#ifdef _WIN32	299	#ifdef _WIN32
223	# include "ev_win32.c"	300	# include "ev_win32.c"
224	#endif	301	#endif
225		302
…		…
254	ev_set_allocator (void (cb)(void *ptr, long size))	331	ev_set_allocator (void (cb)(void *ptr, long size))
255	{	332	{
256	alloc = cb;	333	alloc = cb;
257	}	334	}
258		335
259	static void *	336	inline_speed void *
260	ev_realloc (void *ptr, long size)	337	ev_realloc (void *ptr, long size)
261	{	338	{
262	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	339	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
263		340
264	if (!ptr && size)	341	if (!ptr && size)
…		…
288	typedef struct	365	typedef struct
289	{	366	{
290	W w;	367	W w;
291	int events;	368	int events;
292	} ANPENDING;	369	} ANPENDING;
		370
		371	#if EV_USE_INOTIFY
		372	typedef struct
		373	{
		374	WL head;
		375	} ANFS;
		376	#endif
293		377
294	#if EV_MULTIPLICITY	378	#if EV_MULTIPLICITY
295		379
296	struct ev_loop	380	struct ev_loop
297	{	381	{
…		…
354	{	438	{
355	return ev_rt_now;	439	return ev_rt_now;
356	}	440	}
357	#endif	441	#endif
358		442
359	#define array_roundsize(type,n) (((n) \| 4) & ~3)	443	void
		444	ev_sleep (ev_tstamp delay)
		445	{
		446	if (delay > 0.)
		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	}
		467
		468	/*****************************************************************************/
		469
		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	}
360		497
361	#define array_needsize(type,base,cur,cnt,init) \	498	#define array_needsize(type,base,cur,cnt,init) \
362	if (expect_false ((cnt) > cur)) \	499	if (expect_false ((cnt) > (cur))) \
363	{ \	500	{ \
364	int newcnt = cur; \	501	int ocur_ = (cur); \
365	do \	502	(base) = (type *)array_realloc \
366	{ \	503	(sizeof (type), (base), &(cur), (cnt)); \
367	newcnt = array_roundsize (type, newcnt << 1); \	504	init ((base) + (ocur_), (cur) - ocur_); \
368	} \
369	while ((cnt) > newcnt); \
370	\
371	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
372	init (base + cur, newcnt - cur); \
373	cur = newcnt; \
374	}	505	}
375		506
		507	#if 0
376	#define array_slim(type,stem) \	508	#define array_slim(type,stem) \
377	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	509	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
378	{ \	510	{ \
379	stem ## max = array_roundsize (stem ## cnt >> 1); \	511	stem ## max = array_roundsize (stem ## cnt >> 1); \
380	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\	512	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
381	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	513	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
382	}	514	}
		515	#endif
383		516
384	#define array_free(stem, idx) \	517	#define array_free(stem, idx) \
385	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	518	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
386		519
387	/*****************************************************************************/	520	/*****************************************************************************/
388		521
389	void noinline	522	void noinline
390	ev_feed_event (EV_P_ void *w, int revents)	523	ev_feed_event (EV_P_ void *w, int revents)
391	{	524	{
392	W w_ = (W)w;	525	W w_ = (W)w;
		526	int pri = ABSPRI (w_);
393		527
394	if (expect_false (w_->pending))	528	if (expect_false (w_->pending))
		529	pendings [pri][w_->pending - 1].events \|= revents;
		530	else
395	{	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_;
396	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;	535	pendings [pri][w_->pending - 1].events = revents;
397	return;
398	}	536	}
399
400	w_->pending = ++pendingcnt [ABSPRI (w_)];
401	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
402	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
403	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
404	}	537	}
405		538
406	void inline_size	539	void inline_speed
407	queue_events (EV_P_ W *events, int eventcnt, int type)	540	queue_events (EV_P_ W *events, int eventcnt, int type)
408	{	541	{
409	int i;	542	int i;
410		543
411	for (i = 0; i < eventcnt; ++i)	544	for (i = 0; i < eventcnt; ++i)
…		…
443	}	576	}
444		577
445	void	578	void
446	ev_feed_fd_event (EV_P_ int fd, int revents)	579	ev_feed_fd_event (EV_P_ int fd, int revents)
447	{	580	{
		581	if (fd >= 0 && fd < anfdmax)
448	fd_event (EV_A_ fd, revents);	582	fd_event (EV_A_ fd, revents);
449	}	583	}
450		584
451	void inline_size	585	void inline_size
452	fd_reify (EV_P)	586	fd_reify (EV_P)
453	{	587	{
…		…
457	{	591	{
458	int fd = fdchanges [i];	592	int fd = fdchanges [i];
459	ANFD *anfd = anfds + fd;	593	ANFD *anfd = anfds + fd;
460	ev_io *w;	594	ev_io *w;
461		595
462	int events = 0;	596	unsigned char events = 0;
463		597
464	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	598	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
465	events \|= w->events;	599	events \|= (unsigned char)w->events;
466		600
467	#if EV_SELECT_IS_WINSOCKET	601	#if EV_SELECT_IS_WINSOCKET
468	if (events)	602	if (events)
469	{	603	{
470	unsigned long argp;	604	unsigned long argp;
		605	#ifdef EV_FD_TO_WIN32_HANDLE
		606	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		607	#else
471	anfd->handle = _get_osfhandle (fd);	608	anfd->handle = _get_osfhandle (fd);
		609	#endif
472	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	610	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
473	}	611	}
474	#endif	612	#endif
475		613
		614	{
		615	unsigned char o_events = anfd->events;
		616	unsigned char o_reify = anfd->reify;
		617
476	anfd->reify = 0;	618	anfd->reify = 0;
477
478	backend_modify (EV_A_ fd, anfd->events, events);
479	anfd->events = events;	619	anfd->events = events;
		620
		621	if (o_events != events \|\| o_reify & EV_IOFDSET)
		622	backend_modify (EV_A_ fd, o_events, events);
		623	}
480	}	624	}
481		625
482	fdchangecnt = 0;	626	fdchangecnt = 0;
483	}	627	}
484		628
485	void inline_size	629	void inline_size
486	fd_change (EV_P_ int fd)	630	fd_change (EV_P_ int fd, int flags)
487	{	631	{
488	if (expect_false (anfds [fd].reify))	632	unsigned char reify = anfds [fd].reify;
489	return;
490
491	anfds [fd].reify = 1;	633	anfds [fd].reify \|= flags;
492		634
		635	if (expect_true (!reify))
		636	{
493	++fdchangecnt;	637	++fdchangecnt;
494	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	638	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
495	fdchanges [fdchangecnt - 1] = fd;	639	fdchanges [fdchangecnt - 1] = fd;
		640	}
496	}	641	}
497		642
498	void inline_speed	643	void inline_speed
499	fd_kill (EV_P_ int fd)	644	fd_kill (EV_P_ int fd)
500	{	645	{
…		…
547	static void noinline	692	static void noinline
548	fd_rearm_all (EV_P)	693	fd_rearm_all (EV_P)
549	{	694	{
550	int fd;	695	int fd;
551		696
552	/* this should be highly optimised to not do anything but set a flag */
553	for (fd = 0; fd < anfdmax; ++fd)	697	for (fd = 0; fd < anfdmax; ++fd)
554	if (anfds [fd].events)	698	if (anfds [fd].events)
555	{	699	{
556	anfds [fd].events = 0;	700	anfds [fd].events = 0;
557	fd_change (EV_A_ fd);	701	fd_change (EV_A_ fd, EV_IOFDSET \| 1);
558	}	702	}
559	}	703	}
560		704
561	/*****************************************************************************/	705	/*****************************************************************************/
562		706
563	void inline_speed	707	void inline_speed
564	upheap (WT *heap, int k)	708	upheap (WT *heap, int k)
565	{	709	{
566	WT w = heap [k];	710	WT w = heap [k];
567		711
568	while (k && heap [k >> 1]->at > w->at)	712	while (k)
569	{	713	{
		714	int p = (k - 1) >> 1;
		715
		716	if (heap [p]->at <= w->at)
		717	break;
		718
570	heap [k] = heap [k >> 1];	719	heap [k] = heap [p];
571	((W)heap [k])->active = k + 1;	720	((W)heap [k])->active = k + 1;
572	k >>= 1;	721	k = p;
573	}	722	}
574		723
575	heap [k] = w;	724	heap [k] = w;
576	((W)heap [k])->active = k + 1;	725	((W)heap [k])->active = k + 1;
577
578	}	726	}
579		727
580	void inline_speed	728	void inline_speed
581	downheap (WT *heap, int N, int k)	729	downheap (WT *heap, int N, int k)
582	{	730	{
583	WT w = heap [k];	731	WT w = heap [k];
584		732
585	while (k < (N >> 1))	733	for (;;)
586	{	734	{
587	int j = k << 1;	735	int c = (k << 1) + 1;
588		736
589	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	737	if (c >= N)
590	++j;
591
592	if (w->at <= heap [j]->at)
593	break;	738	break;
594		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
595	heap [k] = heap [j];	746	heap [k] = heap [c];
596	((W)heap [k])->active = k + 1;	747	((W)heap [k])->active = k + 1;
		748
597	k = j;	749	k = c;
598	}	750	}
599		751
600	heap [k] = w;	752	heap [k] = w;
601	((W)heap [k])->active = k + 1;	753	((W)heap [k])->active = k + 1;
602	}	754	}
…		…
684	for (signum = signalmax; signum--; )	836	for (signum = signalmax; signum--; )
685	if (signals [signum].gotsig)	837	if (signals [signum].gotsig)
686	ev_feed_signal_event (EV_A_ signum + 1);	838	ev_feed_signal_event (EV_A_ signum + 1);
687	}	839	}
688		840
689	void inline_size	841	void inline_speed
690	fd_intern (int fd)	842	fd_intern (int fd)
691	{	843	{
692	#ifdef _WIN32	844	#ifdef _WIN32
693	int arg = 1;	845	int arg = 1;
694	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	846	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
709	ev_unref (EV_A); /* child watcher should not keep loop alive */	861	ev_unref (EV_A); /* child watcher should not keep loop alive */
710	}	862	}
711		863
712	/*****************************************************************************/	864	/*****************************************************************************/
713		865
714	static ev_child *childs [PID_HASHSIZE];	866	static WL childs [EV_PID_HASHSIZE];
715		867
716	#ifndef _WIN32	868	#ifndef _WIN32
717		869
718	static ev_signal childev;	870	static ev_signal childev;
719		871
720	void inline_speed	872	void inline_speed
721	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	873	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
722	{	874	{
723	ev_child *w;	875	ev_child *w;
724		876
725	for (w = (ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	877	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
726	if (w->pid == pid \|\| !w->pid)	878	if (w->pid == pid \|\| !w->pid)
727	{	879	{
728	ev_priority (w) = ev_priority (sw); /* need to do it now */	880	ev_set_priority (w, ev_priority (sw)); /* need to do it now */
729	w->rpid = pid;	881	w->rpid = pid;
730	w->rstatus = status;	882	w->rstatus = status;
731	ev_feed_event (EV_A_ (W)w, EV_CHILD);	883	ev_feed_event (EV_A_ (W)w, EV_CHILD);
732	}	884	}
733	}	885	}
734		886
735	#ifndef WCONTINUED	887	#ifndef WCONTINUED
…		…
751	/* 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 */
752	/* we need to do it this way so that the callback gets called before we continue */	904	/* we need to do it this way so that the callback gets called before we continue */
753	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	905	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
754		906
755	child_reap (EV_A_ sw, pid, pid, status);	907	child_reap (EV_A_ sw, pid, pid, status);
		908	if (EV_PID_HASHSIZE > 1)
756	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	909	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
757	}	910	}
758		911
759	#endif	912	#endif
760		913
761	/*****************************************************************************/	914	/*****************************************************************************/
…		…
833	}	986	}
834		987
835	unsigned int	988	unsigned int
836	ev_embeddable_backends (void)	989	ev_embeddable_backends (void)
837	{	990	{
838	return EVBACKEND_EPOLL	991	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
839	\| EVBACKEND_KQUEUE	992
840	\| EVBACKEND_PORT;	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;
841	}	998	}
842		999
843	unsigned int	1000	unsigned int
844	ev_backend (EV_P)	1001	ev_backend (EV_P)
845	{	1002	{
846	return backend;	1003	return backend;
847	}	1004	}
848		1005
849	static void	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
850	loop_init (EV_P_ unsigned int flags)	1025	loop_init (EV_P_ unsigned int flags)
851	{	1026	{
852	if (!backend)	1027	if (!backend)
853	{	1028	{
854	#if EV_USE_MONOTONIC	1029	#if EV_USE_MONOTONIC
…		…
862	ev_rt_now = ev_time ();	1037	ev_rt_now = ev_time ();
863	mn_now = get_clock ();	1038	mn_now = get_clock ();
864	now_floor = mn_now;	1039	now_floor = mn_now;
865	rtmn_diff = ev_rt_now - mn_now;	1040	rtmn_diff = ev_rt_now - mn_now;
866		1041
		1042	io_blocktime = 0.;
		1043	timeout_blocktime = 0.;
		1044
		1045	/* pid check not overridable via env */
		1046	#ifndef _WIN32
		1047	if (flags & EVFLAG_FORKCHECK)
		1048	curpid = getpid ();
		1049	#endif
		1050
867	if (!(flags & EVFLAG_NOENV)	1051	if (!(flags & EVFLAG_NOENV)
868	&& !enable_secure ()	1052	&& !enable_secure ()
869	&& getenv ("LIBEV_FLAGS"))	1053	&& getenv ("LIBEV_FLAGS"))
870	flags = atoi (getenv ("LIBEV_FLAGS"));	1054	flags = atoi (getenv ("LIBEV_FLAGS"));
871		1055
872	if (!(flags & 0x0000ffffUL))	1056	if (!(flags & 0x0000ffffUL))
873	flags \|= ev_recommended_backends ();	1057	flags \|= ev_recommended_backends ();
874		1058
875	backend = 0;	1059	backend = 0;
		1060	backend_fd = -1;
		1061	#if EV_USE_INOTIFY
		1062	fs_fd = -2;
		1063	#endif
		1064
876	#if EV_USE_PORT	1065	#if EV_USE_PORT
877	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1066	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
878	#endif	1067	#endif
879	#if EV_USE_KQUEUE	1068	#if EV_USE_KQUEUE
880	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1069	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
892	ev_init (&sigev, sigcb);	1081	ev_init (&sigev, sigcb);
893	ev_set_priority (&sigev, EV_MAXPRI);	1082	ev_set_priority (&sigev, EV_MAXPRI);
894	}	1083	}
895	}	1084	}
896		1085
897	static void	1086	static void noinline
898	loop_destroy (EV_P)	1087	loop_destroy (EV_P)
899	{	1088	{
900	int i;	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);
901		1098
902	#if EV_USE_PORT	1099	#if EV_USE_PORT
903	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1100	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
904	#endif	1101	#endif
905	#if EV_USE_KQUEUE	1102	#if EV_USE_KQUEUE
…		…
914	#if EV_USE_SELECT	1111	#if EV_USE_SELECT
915	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1112	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
916	#endif	1113	#endif
917		1114
918	for (i = NUMPRI; i--; )	1115	for (i = NUMPRI; i--; )
		1116	{
919	array_free (pending, [i]);	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;
920		1124
921	/* have to use the microsoft-never-gets-it-right macro */	1125	/* have to use the microsoft-never-gets-it-right macro */
922	array_free (fdchange, EMPTY0);	1126	array_free (fdchange, EMPTY);
923	array_free (timer, EMPTY0);	1127	array_free (timer, EMPTY);
924	#if EV_PERIODIC_ENABLE	1128	#if EV_PERIODIC_ENABLE
925	array_free (periodic, EMPTY0);	1129	array_free (periodic, EMPTY);
926	#endif	1130	#endif
		1131	#if EV_FORK_ENABLE
927	array_free (idle, EMPTY0);	1132	array_free (fork, EMPTY);
		1133	#endif
928	array_free (prepare, EMPTY0);	1134	array_free (prepare, EMPTY);
929	array_free (check, EMPTY0);	1135	array_free (check, EMPTY);
930		1136
931	backend = 0;	1137	backend = 0;
932	}	1138	}
933		1139
934	static void	1140	void inline_size infy_fork (EV_P);
		1141
		1142	void inline_size
935	loop_fork (EV_P)	1143	loop_fork (EV_P)
936	{	1144	{
937	#if EV_USE_PORT	1145	#if EV_USE_PORT
938	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1146	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
939	#endif	1147	#endif
940	#if EV_USE_KQUEUE	1148	#if EV_USE_KQUEUE
941	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1149	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
942	#endif	1150	#endif
943	#if EV_USE_EPOLL	1151	#if EV_USE_EPOLL
944	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1152	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1153	#endif
		1154	#if EV_USE_INOTIFY
		1155	infy_fork (EV_A);
945	#endif	1156	#endif
946		1157
947	if (ev_is_active (&sigev))	1158	if (ev_is_active (&sigev))
948	{	1159	{
949	/* default loop */	1160	/* default loop */
…		…
955		1166
956	while (pipe (sigpipe))	1167	while (pipe (sigpipe))
957	syserr ("(libev) error creating pipe");	1168	syserr ("(libev) error creating pipe");
958		1169
959	siginit (EV_A);	1170	siginit (EV_A);
		1171	sigcb (EV_A_ &sigev, EV_READ);
960	}	1172	}
961		1173
962	postfork = 0;	1174	postfork = 0;
963	}	1175	}
964		1176
…		…
986	}	1198	}
987		1199
988	void	1200	void
989	ev_loop_fork (EV_P)	1201	ev_loop_fork (EV_P)
990	{	1202	{
991	postfork = 1;	1203	postfork = 1; /* must be in line with ev_default_fork */
992	}	1204	}
993		1205
994	#endif	1206	#endif
995		1207
996	#if EV_MULTIPLICITY	1208	#if EV_MULTIPLICITY
…		…
1060	#if EV_MULTIPLICITY	1272	#if EV_MULTIPLICITY
1061	struct ev_loop *loop = ev_default_loop_ptr;	1273	struct ev_loop *loop = ev_default_loop_ptr;
1062	#endif	1274	#endif
1063		1275
1064	if (backend)	1276	if (backend)
1065	postfork = 1;	1277	postfork = 1; /* must be in line with ev_loop_fork */
1066	}	1278	}
1067		1279
1068	/*****************************************************************************/	1280	/*****************************************************************************/
1069		1281
1070	int inline_size	1282	void
1071	any_pending (EV_P)	1283	ev_invoke (EV_P_ void *w, int revents)
1072	{	1284	{
1073	int pri;	1285	EV_CB_INVOKE ((W)w, revents);
1074
1075	for (pri = NUMPRI; pri--; )
1076	if (pendingcnt [pri])
1077	return 1;
1078
1079	return 0;
1080	}	1286	}
1081		1287
1082	void inline_speed	1288	void inline_speed
1083	call_pending (EV_P)	1289	call_pending (EV_P)
1084	{	1290	{
…		…
1089	{	1295	{
1090	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1296	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1091		1297
1092	if (expect_true (p->w))	1298	if (expect_true (p->w))
1093	{	1299	{
1094	assert (("non-pending watcher on pending list", p->w->pending));	1300	/assert (("non-pending watcher on pending list", p->w->pending));/
1095		1301
1096	p->w->pending = 0;	1302	p->w->pending = 0;
1097	EV_CB_INVOKE (p->w, p->events);	1303	EV_CB_INVOKE (p->w, p->events);
1098	}	1304	}
1099	}	1305	}
…		…
1102	void inline_size	1308	void inline_size
1103	timers_reify (EV_P)	1309	timers_reify (EV_P)
1104	{	1310	{
1105	while (timercnt && ((WT)timers [0])->at <= mn_now)	1311	while (timercnt && ((WT)timers [0])->at <= mn_now)
1106	{	1312	{
1107	ev_timer *w = timers [0];	1313	ev_timer w = (ev_timer )timers [0];
1108		1314
1109	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1315	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1110		1316
1111	/* first reschedule or stop timer */	1317	/* first reschedule or stop timer */
1112	if (w->repeat)	1318	if (w->repeat)
1113	{	1319	{
1114	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1320	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1115		1321
1116	((WT)w)->at += w->repeat;	1322	((WT)w)->at += w->repeat;
1117	if (((WT)w)->at < mn_now)	1323	if (((WT)w)->at < mn_now)
1118	((WT)w)->at = mn_now;	1324	((WT)w)->at = mn_now;
1119		1325
1120	downheap ((WT *)timers, timercnt, 0);	1326	downheap (timers, timercnt, 0);
1121	}	1327	}
1122	else	1328	else
1123	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1329	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1124		1330
1125	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1331	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1130	void inline_size	1336	void inline_size
1131	periodics_reify (EV_P)	1337	periodics_reify (EV_P)
1132	{	1338	{
1133	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1339	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1134	{	1340	{
1135	ev_periodic *w = periodics [0];	1341	ev_periodic w = (ev_periodic )periodics [0];
1136		1342
1137	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1343	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1138		1344
1139	/* first reschedule or stop timer */	1345	/* first reschedule or stop timer */
1140	if (w->reschedule_cb)	1346	if (w->reschedule_cb)
1141	{	1347	{
1142	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1348	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1143	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1349	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1144	downheap ((WT *)periodics, periodiccnt, 0);	1350	downheap (periodics, periodiccnt, 0);
1145	}	1351	}
1146	else if (w->interval)	1352	else if (w->interval)
1147	{	1353	{
1148	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1354	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1355	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1149	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1356	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1150	downheap ((WT *)periodics, periodiccnt, 0);	1357	downheap (periodics, periodiccnt, 0);
1151	}	1358	}
1152	else	1359	else
1153	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1360	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1154		1361
1155	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1362	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1162	int i;	1369	int i;
1163		1370
1164	/* adjust periodics after time jump */	1371	/* adjust periodics after time jump */
1165	for (i = 0; i < periodiccnt; ++i)	1372	for (i = 0; i < periodiccnt; ++i)
1166	{	1373	{
1167	ev_periodic *w = periodics [i];	1374	ev_periodic w = (ev_periodic )periodics [i];
1168		1375
1169	if (w->reschedule_cb)	1376	if (w->reschedule_cb)
1170	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1377	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1171	else if (w->interval)	1378	else if (w->interval)
1172	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1379	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1173	}	1380	}
1174		1381
1175	/* now rebuild the heap */	1382	/* now rebuild the heap */
1176	for (i = periodiccnt >> 1; i--; )	1383	for (i = periodiccnt >> 1; i--; )
1177	downheap ((WT *)periodics, periodiccnt, i);	1384	downheap (periodics, periodiccnt, i);
1178	}	1385	}
1179	#endif	1386	#endif
1180		1387
		1388	#if EV_IDLE_ENABLE
1181	int inline_size	1389	void inline_size
1182	time_update_monotonic (EV_P)	1390	idle_reify (EV_P)
1183	{	1391	{
		1392	if (expect_false (idleall))
		1393	{
		1394	int pri;
		1395
		1396	for (pri = NUMPRI; pri--; )
		1397	{
		1398	if (pendingcnt [pri])
		1399	break;
		1400
		1401	if (idlecnt [pri])
		1402	{
		1403	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1404	break;
		1405	}
		1406	}
		1407	}
		1408	}
		1409	#endif
		1410
		1411	void inline_speed
		1412	time_update (EV_P_ ev_tstamp max_block)
		1413	{
		1414	int i;
		1415
		1416	#if EV_USE_MONOTONIC
		1417	if (expect_true (have_monotonic))
		1418	{
		1419	ev_tstamp odiff = rtmn_diff;
		1420
1184	mn_now = get_clock ();	1421	mn_now = get_clock ();
1185		1422
		1423	/* only fetch the realtime clock every 0.5MIN_TIMEJUMP seconds /
		1424	/* interpolate in the meantime */
1186	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1425	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1187	{	1426	{
1188	ev_rt_now = rtmn_diff + mn_now;	1427	ev_rt_now = rtmn_diff + mn_now;
1189	return 0;	1428	return;
1190	}	1429	}
1191	else	1430
1192	{
1193	now_floor = mn_now;	1431	now_floor = mn_now;
1194	ev_rt_now = ev_time ();	1432	ev_rt_now = ev_time ();
1195	return 1;
1196	}
1197	}
1198		1433
1199	void inline_size	1434	/* loop a few times, before making important decisions.
1200	time_update (EV_P)	1435	* on the choice of "4": one iteration isn't enough,
1201	{	1436	* in case we get preempted during the calls to
1202	int i;	1437	* ev_time and get_clock. a second call is almost guaranteed
1203		1438	* to succeed in that case, though. and looping a few more times
1204	#if EV_USE_MONOTONIC	1439	* doesn't hurt either as we only do this on time-jumps or
1205	if (expect_true (have_monotonic))	1440	* in the unlikely event of having been preempted here.
1206	{	1441	*/
1207	if (time_update_monotonic (EV_A))	1442	for (i = 4; --i; )
1208	{	1443	{
1209	ev_tstamp odiff = rtmn_diff;
1210
1211	/* loop a few times, before making important decisions.
1212	* on the choice of "4": one iteration isn't enough,
1213	* in case we get preempted during the calls to
1214	* ev_time and get_clock. a second call is almost guarenteed
1215	* to succeed in that case, though. and looping a few more times
1216	* doesn't hurt either as we only do this on time-jumps or
1217	* in the unlikely event of getting preempted here.
1218	*/
1219	for (i = 4; --i; )
1220	{
1221	rtmn_diff = ev_rt_now - mn_now;	1444	rtmn_diff = ev_rt_now - mn_now;
1222		1445
1223	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1446	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1224	return; /* all is well */	1447	return; /* all is well */
1225		1448
1226	ev_rt_now = ev_time ();	1449	ev_rt_now = ev_time ();
1227	mn_now = get_clock ();	1450	mn_now = get_clock ();
1228	now_floor = mn_now;	1451	now_floor = mn_now;
1229	}	1452	}
1230		1453
1231	# if EV_PERIODIC_ENABLE	1454	# if EV_PERIODIC_ENABLE
1232	periodics_reschedule (EV_A);	1455	periodics_reschedule (EV_A);
1233	# endif	1456	# endif
1234	/* no timer adjustment, as the monotonic clock doesn't jump */	1457	/* no timer adjustment, as the monotonic clock doesn't jump */
1235	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1458	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1236	}
1237	}	1459	}
1238	else	1460	else
1239	#endif	1461	#endif
1240	{	1462	{
1241	ev_rt_now = ev_time ();	1463	ev_rt_now = ev_time ();
1242		1464
1243	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1465	if (expect_false (mn_now > ev_rt_now \|\| ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1244	{	1466	{
1245	#if EV_PERIODIC_ENABLE	1467	#if EV_PERIODIC_ENABLE
1246	periodics_reschedule (EV_A);	1468	periodics_reschedule (EV_A);
1247	#endif	1469	#endif
1248
1249	/* adjust timers. this is easy, as the offset is the same for all */	1470	/* adjust timers. this is easy, as the offset is the same for all of them */
1250	for (i = 0; i < timercnt; ++i)	1471	for (i = 0; i < timercnt; ++i)
1251	((WT)timers [i])->at += ev_rt_now - mn_now;	1472	((WT)timers [i])->at += ev_rt_now - mn_now;
1252	}	1473	}
1253		1474
1254	mn_now = ev_rt_now;	1475	mn_now = ev_rt_now;
…		…
1274	{	1495	{
1275	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)	1496	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
1276	? EVUNLOOP_ONE	1497	? EVUNLOOP_ONE
1277	: EVUNLOOP_CANCEL;	1498	: EVUNLOOP_CANCEL;
1278		1499
1279	while (activecnt)	1500	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1501
		1502	do
1280	{	1503	{
		1504	#ifndef _WIN32
		1505	if (expect_false (curpid)) /* penalise the forking check even more */
		1506	if (expect_false (getpid () != curpid))
		1507	{
		1508	curpid = getpid ();
		1509	postfork = 1;
		1510	}
		1511	#endif
		1512
		1513	#if EV_FORK_ENABLE
		1514	/* we might have forked, so queue fork handlers */
		1515	if (expect_false (postfork))
		1516	if (forkcnt)
		1517	{
		1518	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1519	call_pending (EV_A);
		1520	}
		1521	#endif
		1522
1281	/* queue check watchers (and execute them) */	1523	/* queue prepare watchers (and execute them) */
1282	if (expect_false (preparecnt))	1524	if (expect_false (preparecnt))
1283	{	1525	{
1284	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1526	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1285	call_pending (EV_A);	1527	call_pending (EV_A);
1286	}	1528	}
1287		1529
		1530	if (expect_false (!activecnt))
		1531	break;
		1532
1288	/* we might have forked, so reify kernel state if necessary */	1533	/* we might have forked, so reify kernel state if necessary */
1289	if (expect_false (postfork))	1534	if (expect_false (postfork))
1290	loop_fork (EV_A);	1535	loop_fork (EV_A);
1291		1536
1292	/* update fd-related kernel structures */	1537	/* update fd-related kernel structures */
1293	fd_reify (EV_A);	1538	fd_reify (EV_A);
1294		1539
1295	/* calculate blocking time */	1540	/* calculate blocking time */
1296	{	1541	{
1297	double block;	1542	ev_tstamp waittime = 0.;
		1543	ev_tstamp sleeptime = 0.;
1298		1544
1299	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1545	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1300	block = 0.; /* do not block at all */
1301	else
1302	{	1546	{
1303	/* update time to cancel out callback processing overhead */	1547	/* update time to cancel out callback processing overhead */
1304	#if EV_USE_MONOTONIC
1305	if (expect_true (have_monotonic))
1306	time_update_monotonic (EV_A);	1548	time_update (EV_A_ 1e100);
1307	else
1308	#endif
1309	{
1310	ev_rt_now = ev_time ();
1311	mn_now = ev_rt_now;
1312	}
1313		1549
1314	block = MAX_BLOCKTIME;	1550	waittime = MAX_BLOCKTIME;
1315		1551
1316	if (timercnt)	1552	if (timercnt)
1317	{	1553	{
1318	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1554	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1319	if (block > to) block = to;	1555	if (waittime > to) waittime = to;
1320	}	1556	}
1321		1557
1322	#if EV_PERIODIC_ENABLE	1558	#if EV_PERIODIC_ENABLE
1323	if (periodiccnt)	1559	if (periodiccnt)
1324	{	1560	{
1325	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1561	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1326	if (block > to) block = to;	1562	if (waittime > to) waittime = to;
1327	}	1563	}
1328	#endif	1564	#endif
1329		1565
1330	if (expect_false (block < 0.)) block = 0.;	1566	if (expect_false (waittime < timeout_blocktime))
		1567	waittime = timeout_blocktime;
		1568
		1569	sleeptime = waittime - backend_fudge;
		1570
		1571	if (expect_true (sleeptime > io_blocktime))
		1572	sleeptime = io_blocktime;
		1573
		1574	if (sleeptime)
		1575	{
		1576	ev_sleep (sleeptime);
		1577	waittime -= sleeptime;
		1578	}
1331	}	1579	}
1332		1580
		1581	++loop_count;
1333	backend_poll (EV_A_ block);	1582	backend_poll (EV_A_ waittime);
		1583
		1584	/* update ev_rt_now, do magic */
		1585	time_update (EV_A_ waittime + sleeptime);
1334	}	1586	}
1335
1336	/* update ev_rt_now, do magic */
1337	time_update (EV_A);
1338		1587
1339	/* queue pending timers and reschedule them */	1588	/* queue pending timers and reschedule them */
1340	timers_reify (EV_A); /* relative timers called last */	1589	timers_reify (EV_A); /* relative timers called last */
1341	#if EV_PERIODIC_ENABLE	1590	#if EV_PERIODIC_ENABLE
1342	periodics_reify (EV_A); /* absolute timers called first */	1591	periodics_reify (EV_A); /* absolute timers called first */
1343	#endif	1592	#endif
1344		1593
		1594	#if EV_IDLE_ENABLE
1345	/* queue idle watchers unless other events are pending */	1595	/* queue idle watchers unless other events are pending */
1346	if (idlecnt && !any_pending (EV_A))	1596	idle_reify (EV_A);
1347	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1597	#endif
1348		1598
1349	/* queue check watchers, to be executed first */	1599	/* queue check watchers, to be executed first */
1350	if (expect_false (checkcnt))	1600	if (expect_false (checkcnt))
1351	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1601	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1352		1602
1353	call_pending (EV_A);	1603	call_pending (EV_A);
1354		1604
1355	if (expect_false (loop_done))
1356	break;
1357	}	1605	}
		1606	while (expect_true (activecnt && !loop_done));
1358		1607
1359	if (loop_done == EVUNLOOP_ONE)	1608	if (loop_done == EVUNLOOP_ONE)
1360	loop_done = EVUNLOOP_CANCEL;	1609	loop_done = EVUNLOOP_CANCEL;
1361	}	1610	}
1362		1611
…		…
1389	head = &(*head)->next;	1638	head = &(*head)->next;
1390	}	1639	}
1391	}	1640	}
1392		1641
1393	void inline_speed	1642	void inline_speed
1394	ev_clear_pending (EV_P_ W w)	1643	clear_pending (EV_P_ W w)
1395	{	1644	{
1396	if (w->pending)	1645	if (w->pending)
1397	{	1646	{
1398	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1647	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1399	w->pending = 0;	1648	w->pending = 0;
1400	}	1649	}
1401	}	1650	}
1402		1651
		1652	int
		1653	ev_clear_pending (EV_P_ void *w)
		1654	{
		1655	W w_ = (W)w;
		1656	int pending = w_->pending;
		1657
		1658	if (expect_true (pending))
		1659	{
		1660	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1661	w_->pending = 0;
		1662	p->w = 0;
		1663	return p->events;
		1664	}
		1665	else
		1666	return 0;
		1667	}
		1668
		1669	void inline_size
		1670	pri_adjust (EV_P_ W w)
		1671	{
		1672	int pri = w->priority;
		1673	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1674	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1675	w->priority = pri;
		1676	}
		1677
1403	void inline_speed	1678	void inline_speed
1404	ev_start (EV_P_ W w, int active)	1679	ev_start (EV_P_ W w, int active)
1405	{	1680	{
1406	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1681	pri_adjust (EV_A_ w);
1407	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1408
1409	w->active = active;	1682	w->active = active;
1410	ev_ref (EV_A);	1683	ev_ref (EV_A);
1411	}	1684	}
1412		1685
1413	void inline_size	1686	void inline_size
…		…
1417	w->active = 0;	1690	w->active = 0;
1418	}	1691	}
1419		1692
1420	/*****************************************************************************/	1693	/*****************************************************************************/
1421		1694
1422	void	1695	void noinline
1423	ev_io_start (EV_P_ ev_io *w)	1696	ev_io_start (EV_P_ ev_io *w)
1424	{	1697	{
1425	int fd = w->fd;	1698	int fd = w->fd;
1426		1699
1427	if (expect_false (ev_is_active (w)))	1700	if (expect_false (ev_is_active (w)))
…		…
1429		1702
1430	assert (("ev_io_start called with negative fd", fd >= 0));	1703	assert (("ev_io_start called with negative fd", fd >= 0));
1431		1704
1432	ev_start (EV_A_ (W)w, 1);	1705	ev_start (EV_A_ (W)w, 1);
1433	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1706	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1434	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1707	wlist_add (&anfds[fd].head, (WL)w);
1435		1708
1436	fd_change (EV_A_ fd);	1709	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);
		1710	w->events &= ~EV_IOFDSET;
1437	}	1711	}
1438		1712
1439	void	1713	void noinline
1440	ev_io_stop (EV_P_ ev_io *w)	1714	ev_io_stop (EV_P_ ev_io *w)
1441	{	1715	{
1442	ev_clear_pending (EV_A_ (W)w);	1716	clear_pending (EV_A_ (W)w);
1443	if (expect_false (!ev_is_active (w)))	1717	if (expect_false (!ev_is_active (w)))
1444	return;	1718	return;
1445		1719
1446	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1720	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1447		1721
1448	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1722	wlist_del (&anfds[w->fd].head, (WL)w);
1449	ev_stop (EV_A_ (W)w);	1723	ev_stop (EV_A_ (W)w);
1450		1724
1451	fd_change (EV_A_ w->fd);	1725	fd_change (EV_A_ w->fd, 1);
1452	}	1726	}
1453		1727
1454	void	1728	void noinline
1455	ev_timer_start (EV_P_ ev_timer *w)	1729	ev_timer_start (EV_P_ ev_timer *w)
1456	{	1730	{
1457	if (expect_false (ev_is_active (w)))	1731	if (expect_false (ev_is_active (w)))
1458	return;	1732	return;
1459		1733
1460	((WT)w)->at += mn_now;	1734	((WT)w)->at += mn_now;
1461		1735
1462	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1736	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1463		1737
1464	ev_start (EV_A_ (W)w, ++timercnt);	1738	ev_start (EV_A_ (W)w, ++timercnt);
1465	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1739	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1466	timers [timercnt - 1] = w;	1740	timers [timercnt - 1] = (WT)w;
1467	upheap ((WT *)timers, timercnt - 1);	1741	upheap (timers, timercnt - 1);
1468		1742
1469	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1743	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
1470	}	1744	}
1471		1745
1472	void	1746	void noinline
1473	ev_timer_stop (EV_P_ ev_timer *w)	1747	ev_timer_stop (EV_P_ ev_timer *w)
1474	{	1748	{
1475	ev_clear_pending (EV_A_ (W)w);	1749	clear_pending (EV_A_ (W)w);
1476	if (expect_false (!ev_is_active (w)))	1750	if (expect_false (!ev_is_active (w)))
1477	return;	1751	return;
1478		1752
1479	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1753	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1480		1754
		1755	{
		1756	int active = ((W)w)->active;
		1757
1481	if (expect_true (((W)w)->active < timercnt--))	1758	if (expect_true (--active < --timercnt))
1482	{	1759	{
1483	timers [((W)w)->active - 1] = timers [timercnt];	1760	timers [active] = timers [timercnt];
1484	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1761	adjustheap (timers, timercnt, active);
1485	}	1762	}
		1763	}
1486		1764
1487	((WT)w)->at -= mn_now;	1765	((WT)w)->at -= mn_now;
1488		1766
1489	ev_stop (EV_A_ (W)w);	1767	ev_stop (EV_A_ (W)w);
1490	}	1768	}
1491		1769
1492	void	1770	void noinline
1493	ev_timer_again (EV_P_ ev_timer *w)	1771	ev_timer_again (EV_P_ ev_timer *w)
1494	{	1772	{
1495	if (ev_is_active (w))	1773	if (ev_is_active (w))
1496	{	1774	{
1497	if (w->repeat)	1775	if (w->repeat)
1498	{	1776	{
1499	((WT)w)->at = mn_now + w->repeat;	1777	((WT)w)->at = mn_now + w->repeat;
1500	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1778	adjustheap (timers, timercnt, ((W)w)->active - 1);
1501	}	1779	}
1502	else	1780	else
1503	ev_timer_stop (EV_A_ w);	1781	ev_timer_stop (EV_A_ w);
1504	}	1782	}
1505	else if (w->repeat)	1783	else if (w->repeat)
…		…
1508	ev_timer_start (EV_A_ w);	1786	ev_timer_start (EV_A_ w);
1509	}	1787	}
1510	}	1788	}
1511		1789
1512	#if EV_PERIODIC_ENABLE	1790	#if EV_PERIODIC_ENABLE
1513	void	1791	void noinline
1514	ev_periodic_start (EV_P_ ev_periodic *w)	1792	ev_periodic_start (EV_P_ ev_periodic *w)
1515	{	1793	{
1516	if (expect_false (ev_is_active (w)))	1794	if (expect_false (ev_is_active (w)))
1517	return;	1795	return;
1518		1796
…		…
1520	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1798	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1521	else if (w->interval)	1799	else if (w->interval)
1522	{	1800	{
1523	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1801	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1524	/* this formula differs from the one in periodic_reify because we do not always round up */	1802	/* this formula differs from the one in periodic_reify because we do not always round up */
1525	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1803	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1526	}	1804	}
		1805	else
		1806	((WT)w)->at = w->offset;
1527		1807
1528	ev_start (EV_A_ (W)w, ++periodiccnt);	1808	ev_start (EV_A_ (W)w, ++periodiccnt);
1529	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1809	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1530	periodics [periodiccnt - 1] = w;	1810	periodics [periodiccnt - 1] = (WT)w;
1531	upheap ((WT *)periodics, periodiccnt - 1);	1811	upheap (periodics, periodiccnt - 1);
1532		1812
1533	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1813	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
1534	}	1814	}
1535		1815
1536	void	1816	void noinline
1537	ev_periodic_stop (EV_P_ ev_periodic *w)	1817	ev_periodic_stop (EV_P_ ev_periodic *w)
1538	{	1818	{
1539	ev_clear_pending (EV_A_ (W)w);	1819	clear_pending (EV_A_ (W)w);
1540	if (expect_false (!ev_is_active (w)))	1820	if (expect_false (!ev_is_active (w)))
1541	return;	1821	return;
1542		1822
1543	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1823	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1544		1824
		1825	{
		1826	int active = ((W)w)->active;
		1827
1545	if (expect_true (((W)w)->active < periodiccnt--))	1828	if (expect_true (--active < --periodiccnt))
1546	{	1829	{
1547	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1830	periodics [active] = periodics [periodiccnt];
1548	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1831	adjustheap (periodics, periodiccnt, active);
1549	}	1832	}
		1833	}
1550		1834
1551	ev_stop (EV_A_ (W)w);	1835	ev_stop (EV_A_ (W)w);
1552	}	1836	}
1553		1837
1554	void	1838	void noinline
1555	ev_periodic_again (EV_P_ ev_periodic *w)	1839	ev_periodic_again (EV_P_ ev_periodic *w)
1556	{	1840	{
1557	/* TODO: use adjustheap and recalculation */	1841	/* TODO: use adjustheap and recalculation */
1558	ev_periodic_stop (EV_A_ w);	1842	ev_periodic_stop (EV_A_ w);
1559	ev_periodic_start (EV_A_ w);	1843	ev_periodic_start (EV_A_ w);
1560	}	1844	}
1561	#endif	1845	#endif
1562		1846
1563	void
1564	ev_idle_start (EV_P_ ev_idle *w)
1565	{
1566	if (expect_false (ev_is_active (w)))
1567	return;
1568
1569	ev_start (EV_A_ (W)w, ++idlecnt);
1570	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1571	idles [idlecnt - 1] = w;
1572	}
1573
1574	void
1575	ev_idle_stop (EV_P_ ev_idle *w)
1576	{
1577	ev_clear_pending (EV_A_ (W)w);
1578	if (expect_false (!ev_is_active (w)))
1579	return;
1580
1581	{
1582	int active = ((W)w)->active;
1583	idles [active - 1] = idles [--idlecnt];
1584	((W)idles [active - 1])->active = active;
1585	}
1586
1587	ev_stop (EV_A_ (W)w);
1588	}
1589
1590	void
1591	ev_prepare_start (EV_P_ ev_prepare *w)
1592	{
1593	if (expect_false (ev_is_active (w)))
1594	return;
1595
1596	ev_start (EV_A_ (W)w, ++preparecnt);
1597	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1598	prepares [preparecnt - 1] = w;
1599	}
1600
1601	void
1602	ev_prepare_stop (EV_P_ ev_prepare *w)
1603	{
1604	ev_clear_pending (EV_A_ (W)w);
1605	if (expect_false (!ev_is_active (w)))
1606	return;
1607
1608	{
1609	int active = ((W)w)->active;
1610	prepares [active - 1] = prepares [--preparecnt];
1611	((W)prepares [active - 1])->active = active;
1612	}
1613
1614	ev_stop (EV_A_ (W)w);
1615	}
1616
1617	void
1618	ev_check_start (EV_P_ ev_check *w)
1619	{
1620	if (expect_false (ev_is_active (w)))
1621	return;
1622
1623	ev_start (EV_A_ (W)w, ++checkcnt);
1624	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1625	checks [checkcnt - 1] = w;
1626	}
1627
1628	void
1629	ev_check_stop (EV_P_ ev_check *w)
1630	{
1631	ev_clear_pending (EV_A_ (W)w);
1632	if (expect_false (!ev_is_active (w)))
1633	return;
1634
1635	{
1636	int active = ((W)w)->active;
1637	checks [active - 1] = checks [--checkcnt];
1638	((W)checks [active - 1])->active = active;
1639	}
1640
1641	ev_stop (EV_A_ (W)w);
1642	}
1643
1644	#ifndef SA_RESTART	1847	#ifndef SA_RESTART
1645	# define SA_RESTART 0	1848	# define SA_RESTART 0
1646	#endif	1849	#endif
1647		1850
1648	void	1851	void noinline
1649	ev_signal_start (EV_P_ ev_signal *w)	1852	ev_signal_start (EV_P_ ev_signal *w)
1650	{	1853	{
1651	#if EV_MULTIPLICITY	1854	#if EV_MULTIPLICITY
1652	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1855	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1653	#endif	1856	#endif
1654	if (expect_false (ev_is_active (w)))	1857	if (expect_false (ev_is_active (w)))
1655	return;	1858	return;
1656		1859
1657	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1860	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1658		1861
		1862	{
		1863	#ifndef _WIN32
		1864	sigset_t full, prev;
		1865	sigfillset (&full);
		1866	sigprocmask (SIG_SETMASK, &full, &prev);
		1867	#endif
		1868
		1869	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1870
		1871	#ifndef _WIN32
		1872	sigprocmask (SIG_SETMASK, &prev, 0);
		1873	#endif
		1874	}
		1875
1659	ev_start (EV_A_ (W)w, 1);	1876	ev_start (EV_A_ (W)w, 1);
1660	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1661	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1877	wlist_add (&signals [w->signum - 1].head, (WL)w);
1662		1878
1663	if (!((WL)w)->next)	1879	if (!((WL)w)->next)
1664	{	1880	{
1665	#if _WIN32	1881	#if _WIN32
1666	signal (w->signum, sighandler);	1882	signal (w->signum, sighandler);
…		…
1672	sigaction (w->signum, &sa, 0);	1888	sigaction (w->signum, &sa, 0);
1673	#endif	1889	#endif
1674	}	1890	}
1675	}	1891	}
1676		1892
1677	void	1893	void noinline
1678	ev_signal_stop (EV_P_ ev_signal *w)	1894	ev_signal_stop (EV_P_ ev_signal *w)
1679	{	1895	{
1680	ev_clear_pending (EV_A_ (W)w);	1896	clear_pending (EV_A_ (W)w);
1681	if (expect_false (!ev_is_active (w)))	1897	if (expect_false (!ev_is_active (w)))
1682	return;	1898	return;
1683		1899
1684	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1900	wlist_del (&signals [w->signum - 1].head, (WL)w);
1685	ev_stop (EV_A_ (W)w);	1901	ev_stop (EV_A_ (W)w);
1686		1902
1687	if (!signals [w->signum - 1].head)	1903	if (!signals [w->signum - 1].head)
1688	signal (w->signum, SIG_DFL);	1904	signal (w->signum, SIG_DFL);
1689	}	1905	}
…		…
1696	#endif	1912	#endif
1697	if (expect_false (ev_is_active (w)))	1913	if (expect_false (ev_is_active (w)))
1698	return;	1914	return;
1699		1915
1700	ev_start (EV_A_ (W)w, 1);	1916	ev_start (EV_A_ (W)w, 1);
1701	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1917	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1702	}	1918	}
1703		1919
1704	void	1920	void
1705	ev_child_stop (EV_P_ ev_child *w)	1921	ev_child_stop (EV_P_ ev_child *w)
1706	{	1922	{
1707	ev_clear_pending (EV_A_ (W)w);	1923	clear_pending (EV_A_ (W)w);
1708	if (expect_false (!ev_is_active (w)))	1924	if (expect_false (!ev_is_active (w)))
1709	return;	1925	return;
1710		1926
1711	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1927	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1712	ev_stop (EV_A_ (W)w);	1928	ev_stop (EV_A_ (W)w);
1713	}	1929	}
1714		1930
1715	#if EV_EMBED_ENABLE
1716	void noinline
1717	ev_embed_sweep (EV_P_ ev_embed *w)
1718	{
1719	ev_loop (w->loop, EVLOOP_NONBLOCK);
1720	}
1721
1722	static void
1723	embed_cb (EV_P_ ev_io *io, int revents)
1724	{
1725	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
1726
1727	if (ev_cb (w))
1728	ev_feed_event (EV_A_ (W)w, EV_EMBED);
1729	else
1730	ev_embed_sweep (loop, w);
1731	}
1732
1733	void
1734	ev_embed_start (EV_P_ ev_embed *w)
1735	{
1736	if (expect_false (ev_is_active (w)))
1737	return;
1738
1739	{
1740	struct ev_loop *loop = w->loop;
1741	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1742	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1743	}
1744
1745	ev_set_priority (&w->io, ev_priority (w));
1746	ev_io_start (EV_A_ &w->io);
1747
1748	ev_start (EV_A_ (W)w, 1);
1749	}
1750
1751	void
1752	ev_embed_stop (EV_P_ ev_embed *w)
1753	{
1754	ev_clear_pending (EV_A_ (W)w);
1755	if (expect_false (!ev_is_active (w)))
1756	return;
1757
1758	ev_io_stop (EV_A_ &w->io);
1759
1760	ev_stop (EV_A_ (W)w);
1761	}
1762	#endif
1763
1764	#if EV_STAT_ENABLE	1931	#if EV_STAT_ENABLE
1765		1932
1766	# ifdef _WIN32	1933	# ifdef _WIN32
		1934	# undef lstat
1767	# define lstat(a,b) stat(a,b)	1935	# define lstat(a,b) _stati64 (a,b)
1768	# endif	1936	# endif
1769		1937
1770	#define DEF_STAT_INTERVAL 5.0074891	1938	#define DEF_STAT_INTERVAL 5.0074891
1771	#define MIN_STAT_INTERVAL 0.1074891	1939	#define MIN_STAT_INTERVAL 0.1074891
		1940
		1941	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1942
		1943	#if EV_USE_INOTIFY
		1944	# define EV_INOTIFY_BUFSIZE 8192
		1945
		1946	static void noinline
		1947	infy_add (EV_P_ ev_stat *w)
		1948	{
		1949	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);
		1950
		1951	if (w->wd < 0)
		1952	{
		1953	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1954
		1955	/* monitor some parent directory for speedup hints */
		1956	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
		1957	{
		1958	char path [4096];
		1959	strcpy (path, w->path);
		1960
		1961	do
		1962	{
		1963	int mask = IN_MASK_ADD \| IN_DELETE_SELF \| IN_MOVE_SELF
		1964	\| (errno == EACCES ? IN_ATTRIB : IN_CREATE \| IN_MOVED_TO);
		1965
		1966	char *pend = strrchr (path, '/');
		1967
		1968	if (!pend)
		1969	break; /* whoops, no '/', complain to your admin */
		1970
		1971	*pend = 0;
		1972	w->wd = inotify_add_watch (fs_fd, path, mask);
		1973	}
		1974	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
		1975	}
		1976	}
		1977	else
		1978	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1979
		1980	if (w->wd >= 0)
		1981	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1982	}
		1983
		1984	static void noinline
		1985	infy_del (EV_P_ ev_stat *w)
		1986	{
		1987	int slot;
		1988	int wd = w->wd;
		1989
		1990	if (wd < 0)
		1991	return;
		1992
		1993	w->wd = -2;
		1994	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1995	wlist_del (&fs_hash [slot].head, (WL)w);
		1996
		1997	/* remove this watcher, if others are watching it, they will rearm */
		1998	inotify_rm_watch (fs_fd, wd);
		1999	}
		2000
		2001	static void noinline
		2002	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		2003	{
		2004	if (slot < 0)
		2005	/* overflow, need to check for all hahs slots */
		2006	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2007	infy_wd (EV_A_ slot, wd, ev);
		2008	else
		2009	{
		2010	WL w_;
		2011
		2012	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		2013	{
		2014	ev_stat w = (ev_stat )w_;
		2015	w_ = w_->next; /* lets us remove this watcher and all before it */
		2016
		2017	if (w->wd == wd \|\| wd == -1)
		2018	{
		2019	if (ev->mask & (IN_IGNORED \| IN_UNMOUNT \| IN_DELETE_SELF))
		2020	{
		2021	w->wd = -1;
		2022	infy_add (EV_A_ w); /* re-add, no matter what */
		2023	}
		2024
		2025	stat_timer_cb (EV_A_ &w->timer, 0);
		2026	}
		2027	}
		2028	}
		2029	}
		2030
		2031	static void
		2032	infy_cb (EV_P_ ev_io *w, int revents)
		2033	{
		2034	char buf [EV_INOTIFY_BUFSIZE];
		2035	struct inotify_event ev = (struct inotify_event )buf;
		2036	int ofs;
		2037	int len = read (fs_fd, buf, sizeof (buf));
		2038
		2039	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2040	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2041	}
		2042
		2043	void inline_size
		2044	infy_init (EV_P)
		2045	{
		2046	if (fs_fd != -2)
		2047	return;
		2048
		2049	fs_fd = inotify_init ();
		2050
		2051	if (fs_fd >= 0)
		2052	{
		2053	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2054	ev_set_priority (&fs_w, EV_MAXPRI);
		2055	ev_io_start (EV_A_ &fs_w);
		2056	}
		2057	}
		2058
		2059	void inline_size
		2060	infy_fork (EV_P)
		2061	{
		2062	int slot;
		2063
		2064	if (fs_fd < 0)
		2065	return;
		2066
		2067	close (fs_fd);
		2068	fs_fd = inotify_init ();
		2069
		2070	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2071	{
		2072	WL w_ = fs_hash [slot].head;
		2073	fs_hash [slot].head = 0;
		2074
		2075	while (w_)
		2076	{
		2077	ev_stat w = (ev_stat )w_;
		2078	w_ = w_->next; /* lets us add this watcher */
		2079
		2080	w->wd = -1;
		2081
		2082	if (fs_fd >= 0)
		2083	infy_add (EV_A_ w); /* re-add, no matter what */
		2084	else
		2085	ev_timer_start (EV_A_ &w->timer);
		2086	}
		2087
		2088	}
		2089	}
		2090
		2091	#endif
1772		2092
1773	void	2093	void
1774	ev_stat_stat (EV_P_ ev_stat *w)	2094	ev_stat_stat (EV_P_ ev_stat *w)
1775	{	2095	{
1776	if (lstat (w->path, &w->attr) < 0)	2096	if (lstat (w->path, &w->attr) < 0)
1777	w->attr.st_nlink = 0;	2097	w->attr.st_nlink = 0;
1778	else if (!w->attr.st_nlink)	2098	else if (!w->attr.st_nlink)
1779	w->attr.st_nlink = 1;	2099	w->attr.st_nlink = 1;
1780	}	2100	}
1781		2101
1782	static void	2102	static void noinline
1783	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	2103	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1784	{	2104	{
1785	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));	2105	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
1786		2106
1787	/* we copy this here each the time so that */	2107	/* we copy this here each the time so that */
1788	/* prev has the old value when the callback gets invoked */	2108	/* prev has the old value when the callback gets invoked */
1789	w->prev = w->attr;	2109	w->prev = w->attr;
1790	ev_stat_stat (EV_A_ w);	2110	ev_stat_stat (EV_A_ w);
1791		2111
1792	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))	2112	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2113	if (
		2114	w->prev.st_dev != w->attr.st_dev
		2115	\|\| w->prev.st_ino != w->attr.st_ino
		2116	\|\| w->prev.st_mode != w->attr.st_mode
		2117	\|\| w->prev.st_nlink != w->attr.st_nlink
		2118	\|\| w->prev.st_uid != w->attr.st_uid
		2119	\|\| w->prev.st_gid != w->attr.st_gid
		2120	\|\| w->prev.st_rdev != w->attr.st_rdev
		2121	\|\| w->prev.st_size != w->attr.st_size
		2122	\|\| w->prev.st_atime != w->attr.st_atime
		2123	\|\| w->prev.st_mtime != w->attr.st_mtime
		2124	\|\| w->prev.st_ctime != w->attr.st_ctime
		2125	) {
		2126	#if EV_USE_INOTIFY
		2127	infy_del (EV_A_ w);
		2128	infy_add (EV_A_ w);
		2129	ev_stat_stat (EV_A_ w); /* avoid race... */
		2130	#endif
		2131
1793	ev_feed_event (EV_A_ w, EV_STAT);	2132	ev_feed_event (EV_A_ w, EV_STAT);
		2133	}
1794	}	2134	}
1795		2135
1796	void	2136	void
1797	ev_stat_start (EV_P_ ev_stat *w)	2137	ev_stat_start (EV_P_ ev_stat *w)
1798	{	2138	{
…		…
1808	if (w->interval < MIN_STAT_INTERVAL)	2148	if (w->interval < MIN_STAT_INTERVAL)
1809	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;	2149	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1810		2150
1811	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2151	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1812	ev_set_priority (&w->timer, ev_priority (w));	2152	ev_set_priority (&w->timer, ev_priority (w));
		2153
		2154	#if EV_USE_INOTIFY
		2155	infy_init (EV_A);
		2156
		2157	if (fs_fd >= 0)
		2158	infy_add (EV_A_ w);
		2159	else
		2160	#endif
1813	ev_timer_start (EV_A_ &w->timer);	2161	ev_timer_start (EV_A_ &w->timer);
1814		2162
1815	ev_start (EV_A_ (W)w, 1);	2163	ev_start (EV_A_ (W)w, 1);
1816	}	2164	}
1817		2165
1818	void	2166	void
1819	ev_stat_stop (EV_P_ ev_stat *w)	2167	ev_stat_stop (EV_P_ ev_stat *w)
1820	{	2168	{
1821	ev_clear_pending (EV_A_ (W)w);	2169	clear_pending (EV_A_ (W)w);
1822	if (expect_false (!ev_is_active (w)))	2170	if (expect_false (!ev_is_active (w)))
1823	return;	2171	return;
1824		2172
		2173	#if EV_USE_INOTIFY
		2174	infy_del (EV_A_ w);
		2175	#endif
1825	ev_timer_stop (EV_A_ &w->timer);	2176	ev_timer_stop (EV_A_ &w->timer);
		2177
		2178	ev_stop (EV_A_ (W)w);
		2179	}
		2180	#endif
		2181
		2182	#if EV_IDLE_ENABLE
		2183	void
		2184	ev_idle_start (EV_P_ ev_idle *w)
		2185	{
		2186	if (expect_false (ev_is_active (w)))
		2187	return;
		2188
		2189	pri_adjust (EV_A_ (W)w);
		2190
		2191	{
		2192	int active = ++idlecnt [ABSPRI (w)];
		2193
		2194	++idleall;
		2195	ev_start (EV_A_ (W)w, active);
		2196
		2197	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2198	idles [ABSPRI (w)][active - 1] = w;
		2199	}
		2200	}
		2201
		2202	void
		2203	ev_idle_stop (EV_P_ ev_idle *w)
		2204	{
		2205	clear_pending (EV_A_ (W)w);
		2206	if (expect_false (!ev_is_active (w)))
		2207	return;
		2208
		2209	{
		2210	int active = ((W)w)->active;
		2211
		2212	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2213	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2214
		2215	ev_stop (EV_A_ (W)w);
		2216	--idleall;
		2217	}
		2218	}
		2219	#endif
		2220
		2221	void
		2222	ev_prepare_start (EV_P_ ev_prepare *w)
		2223	{
		2224	if (expect_false (ev_is_active (w)))
		2225	return;
		2226
		2227	ev_start (EV_A_ (W)w, ++preparecnt);
		2228	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2229	prepares [preparecnt - 1] = w;
		2230	}
		2231
		2232	void
		2233	ev_prepare_stop (EV_P_ ev_prepare *w)
		2234	{
		2235	clear_pending (EV_A_ (W)w);
		2236	if (expect_false (!ev_is_active (w)))
		2237	return;
		2238
		2239	{
		2240	int active = ((W)w)->active;
		2241	prepares [active - 1] = prepares [--preparecnt];
		2242	((W)prepares [active - 1])->active = active;
		2243	}
		2244
		2245	ev_stop (EV_A_ (W)w);
		2246	}
		2247
		2248	void
		2249	ev_check_start (EV_P_ ev_check *w)
		2250	{
		2251	if (expect_false (ev_is_active (w)))
		2252	return;
		2253
		2254	ev_start (EV_A_ (W)w, ++checkcnt);
		2255	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2256	checks [checkcnt - 1] = w;
		2257	}
		2258
		2259	void
		2260	ev_check_stop (EV_P_ ev_check *w)
		2261	{
		2262	clear_pending (EV_A_ (W)w);
		2263	if (expect_false (!ev_is_active (w)))
		2264	return;
		2265
		2266	{
		2267	int active = ((W)w)->active;
		2268	checks [active - 1] = checks [--checkcnt];
		2269	((W)checks [active - 1])->active = active;
		2270	}
		2271
		2272	ev_stop (EV_A_ (W)w);
		2273	}
		2274
		2275	#if EV_EMBED_ENABLE
		2276	void noinline
		2277	ev_embed_sweep (EV_P_ ev_embed *w)
		2278	{
		2279	ev_loop (w->other, EVLOOP_NONBLOCK);
		2280	}
		2281
		2282	static void
		2283	embed_io_cb (EV_P_ ev_io *io, int revents)
		2284	{
		2285	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
		2286
		2287	if (ev_cb (w))
		2288	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2289	else
		2290	ev_loop (w->other, EVLOOP_NONBLOCK);
		2291	}
		2292
		2293	static void
		2294	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2295	{
		2296	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
		2297
		2298	{
		2299	struct ev_loop *loop = w->other;
		2300
		2301	while (fdchangecnt)
		2302	{
		2303	fd_reify (EV_A);
		2304	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2305	}
		2306	}
		2307	}
		2308
		2309	#if 0
		2310	static void
		2311	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2312	{
		2313	ev_idle_stop (EV_A_ idle);
		2314	}
		2315	#endif
		2316
		2317	void
		2318	ev_embed_start (EV_P_ ev_embed *w)
		2319	{
		2320	if (expect_false (ev_is_active (w)))
		2321	return;
		2322
		2323	{
		2324	struct ev_loop *loop = w->other;
		2325	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2326	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
		2327	}
		2328
		2329	ev_set_priority (&w->io, ev_priority (w));
		2330	ev_io_start (EV_A_ &w->io);
		2331
		2332	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2333	ev_set_priority (&w->prepare, EV_MINPRI);
		2334	ev_prepare_start (EV_A_ &w->prepare);
		2335
		2336	/ev_idle_init (&w->idle, e,bed_idle_cb);/
		2337
		2338	ev_start (EV_A_ (W)w, 1);
		2339	}
		2340
		2341	void
		2342	ev_embed_stop (EV_P_ ev_embed *w)
		2343	{
		2344	clear_pending (EV_A_ (W)w);
		2345	if (expect_false (!ev_is_active (w)))
		2346	return;
		2347
		2348	ev_io_stop (EV_A_ &w->io);
		2349	ev_prepare_stop (EV_A_ &w->prepare);
		2350
		2351	ev_stop (EV_A_ (W)w);
		2352	}
		2353	#endif
		2354
		2355	#if EV_FORK_ENABLE
		2356	void
		2357	ev_fork_start (EV_P_ ev_fork *w)
		2358	{
		2359	if (expect_false (ev_is_active (w)))
		2360	return;
		2361
		2362	ev_start (EV_A_ (W)w, ++forkcnt);
		2363	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2364	forks [forkcnt - 1] = w;
		2365	}
		2366
		2367	void
		2368	ev_fork_stop (EV_P_ ev_fork *w)
		2369	{
		2370	clear_pending (EV_A_ (W)w);
		2371	if (expect_false (!ev_is_active (w)))
		2372	return;
		2373
		2374	{
		2375	int active = ((W)w)->active;
		2376	forks [active - 1] = forks [--forkcnt];
		2377	((W)forks [active - 1])->active = active;
		2378	}
1826		2379
1827	ev_stop (EV_A_ (W)w);	2380	ev_stop (EV_A_ (W)w);
1828	}	2381	}
1829	#endif	2382	#endif
1830		2383
…		…
1890	ev_timer_set (&once->to, timeout, 0.);	2443	ev_timer_set (&once->to, timeout, 0.);
1891	ev_timer_start (EV_A_ &once->to);	2444	ev_timer_start (EV_A_ &once->to);
1892	}	2445	}
1893	}	2446	}
1894		2447
		2448	#if EV_MULTIPLICITY
		2449	#include "ev_wrap.h"
		2450	#endif
		2451
1895	#ifdef __cplusplus	2452	#ifdef __cplusplus
1896	}	2453	}
1897	#endif	2454	#endif
1898		2455

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Comparing libev/ev.c (file contents): Revision 1.143 by root, Tue Nov 27 07:27:10 2007 UTC vs. Revision 1.205 by root, Sun Jan 20 15:37:03 2008 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.143 by root, Tue Nov 27 07:27:10 2007 UTC vs.
Revision 1.205 by root, Sun Jan 20 15:37:03 2008 UTC