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Comparing libev/ev.c (file contents):
Revision 1.263 by root, Wed Oct 1 18:50:03 2008 UTC vs.
Revision 1.330 by root, Tue Mar 9 08:46:17 2010 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009,2010 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 modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
…		…
47	# include EV_CONFIG_H	47	# include EV_CONFIG_H
48	# else	48	# else
49	# include "config.h"	49	# include "config.h"
50	# endif	50	# endif
51		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
		64	# endif
		65
52	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
53	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
55	# endif	69	# endif
56	# ifndef EV_USE_REALTIME	70	# ifndef EV_USE_REALTIME
57	# define EV_USE_REALTIME 1	71	# define EV_USE_REALTIME 0
58	# endif	72	# endif
59	# else	73	# else
60	# ifndef EV_USE_MONOTONIC	74	# ifndef EV_USE_MONOTONIC
61	# define EV_USE_MONOTONIC 0	75	# define EV_USE_MONOTONIC 0
62	# endif	76	# endif
…		…
96	# define EV_USE_EPOLL 0	110	# define EV_USE_EPOLL 0
97	# endif	111	# endif
98	# endif	112	# endif
99		113
100	# ifndef EV_USE_KQUEUE	114	# ifndef EV_USE_KQUEUE
101	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	115	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
102	# define EV_USE_KQUEUE 1	116	# define EV_USE_KQUEUE 1
103	# else	117	# else
104	# define EV_USE_KQUEUE 0	118	# define EV_USE_KQUEUE 0
105	# endif	119	# endif
106	# endif	120	# endif
…		…
119	# else	133	# else
120	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
121	# endif	135	# endif
122	# endif	136	# endif
123		137
		138	# ifndef EV_USE_SIGNALFD
		139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		140	# define EV_USE_SIGNALFD 1
		141	# else
		142	# define EV_USE_SIGNALFD 0
		143	# endif
		144	# endif
		145
124	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
125	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
126	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD 1
127	# else	149	# else
128	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
…		…
131		153
132	#endif	154	#endif
133		155
134	#include <math.h>	156	#include <math.h>
135	#include <stdlib.h>	157	#include <stdlib.h>
		158	#include <string.h>
136	#include <fcntl.h>	159	#include <fcntl.h>
137	#include <stddef.h>	160	#include <stddef.h>
138		161
139	#include <stdio.h>	162	#include <stdio.h>
140		163
141	#include <assert.h>	164	#include <assert.h>
142	#include <errno.h>	165	#include <errno.h>
143	#include <sys/types.h>	166	#include <sys/types.h>
144	#include <time.h>	167	#include <time.h>
		168	#include <limits.h>
145		169
146	#include <signal.h>	170	#include <signal.h>
147		171
148	#ifdef EV_H	172	#ifdef EV_H
149	# include EV_H	173	# include EV_H
…		…
164	# endif	188	# endif
165	#endif	189	#endif
166		190
167	/* this block tries to deduce configuration from header-defined symbols and defaults */	191	/* this block tries to deduce configuration from header-defined symbols and defaults */
168		192
		193	/* try to deduce the maximum number of signals on this platform */
		194	#if defined (EV_NSIG)
		195	/* use what's provided */
		196	#elif defined (NSIG)
		197	# define EV_NSIG (NSIG)
		198	#elif defined(_NSIG)
		199	# define EV_NSIG (_NSIG)
		200	#elif defined (SIGMAX)
		201	# define EV_NSIG (SIGMAX+1)
		202	#elif defined (SIG_MAX)
		203	# define EV_NSIG (SIG_MAX+1)
		204	#elif defined (_SIG_MAX)
		205	# define EV_NSIG (_SIG_MAX+1)
		206	#elif defined (MAXSIG)
		207	# define EV_NSIG (MAXSIG+1)
		208	#elif defined (MAX_SIG)
		209	# define EV_NSIG (MAX_SIG+1)
		210	#elif defined (SIGARRAYSIZE)
		211	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		212	#elif defined (_sys_nsig)
		213	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		214	#else
		215	# error "unable to find value for NSIG, please report"
		216	/* to make it compile regardless, just remove the above line */
		217	# define EV_NSIG 65
		218	#endif
		219
		220	#ifndef EV_USE_CLOCK_SYSCALL
		221	# if __linux && __GLIBC__ >= 2
		222	# define EV_USE_CLOCK_SYSCALL 1
		223	# else
		224	# define EV_USE_CLOCK_SYSCALL 0
		225	# endif
		226	#endif
		227
169	#ifndef EV_USE_MONOTONIC	228	#ifndef EV_USE_MONOTONIC
170	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0	229	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
171	# define EV_USE_MONOTONIC 1	230	# define EV_USE_MONOTONIC 1
172	# else	231	# else
173	# define EV_USE_MONOTONIC 0	232	# define EV_USE_MONOTONIC 0
174	# endif	233	# endif
175	#endif	234	#endif
176		235
177	#ifndef EV_USE_REALTIME	236	#ifndef EV_USE_REALTIME
178	# define EV_USE_REALTIME 0	237	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
179	#endif	238	#endif
180		239
181	#ifndef EV_USE_NANOSLEEP	240	#ifndef EV_USE_NANOSLEEP
182	# if _POSIX_C_SOURCE >= 199309L	241	# if _POSIX_C_SOURCE >= 199309L
183	# define EV_USE_NANOSLEEP 1	242	# define EV_USE_NANOSLEEP 1
…		…
244	# else	303	# else
245	# define EV_USE_EVENTFD 0	304	# define EV_USE_EVENTFD 0
246	# endif	305	# endif
247	#endif	306	#endif
248		307
		308	#ifndef EV_USE_SIGNALFD
		309	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		310	# define EV_USE_SIGNALFD 1
		311	# else
		312	# define EV_USE_SIGNALFD 0
		313	# endif
		314	#endif
		315
249	#if 0 /* debugging */	316	#if 0 /* debugging */
250	# define EV_VERIFY 3	317	# define EV_VERIFY 3
251	# define EV_USE_4HEAP 1	318	# define EV_USE_4HEAP 1
252	# define EV_HEAP_CACHE_AT 1	319	# define EV_HEAP_CACHE_AT 1
253	#endif	320	#endif
…		…
262		329
263	#ifndef EV_HEAP_CACHE_AT	330	#ifndef EV_HEAP_CACHE_AT
264	# define EV_HEAP_CACHE_AT !EV_MINIMAL	331	# define EV_HEAP_CACHE_AT !EV_MINIMAL
265	#endif	332	#endif
266		333
		334	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		335	/* which makes programs even slower. might work on other unices, too. */
		336	#if EV_USE_CLOCK_SYSCALL
		337	# include <syscall.h>
		338	# ifdef SYS_clock_gettime
		339	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		340	# undef EV_USE_MONOTONIC
		341	# define EV_USE_MONOTONIC 1
		342	# else
		343	# undef EV_USE_CLOCK_SYSCALL
		344	# define EV_USE_CLOCK_SYSCALL 0
		345	# endif
		346	#endif
		347
267	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	348	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
		349
		350	#ifdef _AIX
		351	/* AIX has a completely broken poll.h header */
		352	# undef EV_USE_POLL
		353	# define EV_USE_POLL 0
		354	#endif
268		355
269	#ifndef CLOCK_MONOTONIC	356	#ifndef CLOCK_MONOTONIC
270	# undef EV_USE_MONOTONIC	357	# undef EV_USE_MONOTONIC
271	# define EV_USE_MONOTONIC 0	358	# define EV_USE_MONOTONIC 0
272	#endif	359	#endif
…		…
286	# include <sys/select.h>	373	# include <sys/select.h>
287	# endif	374	# endif
288	#endif	375	#endif
289		376
290	#if EV_USE_INOTIFY	377	#if EV_USE_INOTIFY
		378	# include <sys/utsname.h>
		379	# include <sys/statfs.h>
291	# include <sys/inotify.h>	380	# include <sys/inotify.h>
292	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */	381	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
293	# ifndef IN_DONT_FOLLOW	382	# ifndef IN_DONT_FOLLOW
294	# undef EV_USE_INOTIFY	383	# undef EV_USE_INOTIFY
295	# define EV_USE_INOTIFY 0	384	# define EV_USE_INOTIFY 0
…		…
301	#endif	390	#endif
302		391
303	#if EV_USE_EVENTFD	392	#if EV_USE_EVENTFD
304	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	393	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
305	# include <stdint.h>	394	# include <stdint.h>
		395	# ifndef EFD_NONBLOCK
		396	# define EFD_NONBLOCK O_NONBLOCK
		397	# endif
		398	# ifndef EFD_CLOEXEC
		399	# ifdef O_CLOEXEC
		400	# define EFD_CLOEXEC O_CLOEXEC
		401	# else
		402	# define EFD_CLOEXEC 02000000
		403	# endif
		404	# endif
306	# ifdef __cplusplus	405	# ifdef __cplusplus
307	extern "C" {	406	extern "C" {
308	# endif	407	# endif
309	int eventfd (unsigned int initval, int flags);	408	int (eventfd) (unsigned int initval, int flags);
310	# ifdef __cplusplus	409	# ifdef __cplusplus
311	}	410	}
312	# endif	411	# endif
313	#endif	412	#endif
		413
		414	#if EV_USE_SIGNALFD
		415	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		416	# include <stdint.h>
		417	# ifndef SFD_NONBLOCK
		418	# define SFD_NONBLOCK O_NONBLOCK
		419	# endif
		420	# ifndef SFD_CLOEXEC
		421	# ifdef O_CLOEXEC
		422	# define SFD_CLOEXEC O_CLOEXEC
		423	# else
		424	# define SFD_CLOEXEC 02000000
		425	# endif
		426	# endif
		427	# ifdef __cplusplus
		428	extern "C" {
		429	# endif
		430	int signalfd (int fd, const sigset_t *mask, int flags);
		431
		432	struct signalfd_siginfo
		433	{
		434	uint32_t ssi_signo;
		435	char pad[128 - sizeof (uint32_t)];
		436	};
		437	# ifdef __cplusplus
		438	}
		439	# endif
		440	#endif
		441
314		442
315	/**/	443	/**/
316		444
317	#if EV_VERIFY >= 3	445	#if EV_VERIFY >= 3
318	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	446	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
…		…
330	*/	458	*/
331	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	459	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
332		460
333	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	461	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
334	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	462	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
335	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
336		463
337	#if __GNUC__ >= 4	464	#if __GNUC__ >= 4
338	# define expect(expr,value) __builtin_expect ((expr),(value))	465	# define expect(expr,value) __builtin_expect ((expr),(value))
339	# define noinline __attribute__ ((noinline))	466	# define noinline __attribute__ ((noinline))
340	#else	467	#else
…		…
353	# define inline_speed static noinline	480	# define inline_speed static noinline
354	#else	481	#else
355	# define inline_speed static inline	482	# define inline_speed static inline
356	#endif	483	#endif
357		484
358	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	485	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		486
		487	#if EV_MINPRI == EV_MAXPRI
		488	# define ABSPRI(w) (((W)w), 0)
		489	#else
359	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	490	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		491	#endif
360		492
361	#define EMPTY /* required for microsofts broken pseudo-c compiler */	493	#define EMPTY /* required for microsofts broken pseudo-c compiler */
362	#define EMPTY2(a,b) /* used to suppress some warnings */	494	#define EMPTY2(a,b) /* used to suppress some warnings */
363		495
364	typedef ev_watcher *W;	496	typedef ev_watcher *W;
…		…
366	typedef ev_watcher_time *WT;	498	typedef ev_watcher_time *WT;
367		499
368	#define ev_active(w) ((W)(w))->active	500	#define ev_active(w) ((W)(w))->active
369	#define ev_at(w) ((WT)(w))->at	501	#define ev_at(w) ((WT)(w))->at
370		502
371	#if EV_USE_MONOTONIC	503	#if EV_USE_REALTIME
372	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	504	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
373	/* giving it a reasonably high chance of working on typical architetcures */	505	/* giving it a reasonably high chance of working on typical architetcures */
		506	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		507	#endif
		508
		509	#if EV_USE_MONOTONIC
374	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	510	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		511	#endif
		512
		513	#ifndef EV_FD_TO_WIN32_HANDLE
		514	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		515	#endif
		516	#ifndef EV_WIN32_HANDLE_TO_FD
		517	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		518	#endif
		519	#ifndef EV_WIN32_CLOSE_FD
		520	# define EV_WIN32_CLOSE_FD(fd) close (fd)
375	#endif	521	#endif
376		522
377	#ifdef _WIN32	523	#ifdef _WIN32
378	# include "ev_win32.c"	524	# include "ev_win32.c"
379	#endif	525	#endif
…		…
387	{	533	{
388	syserr_cb = cb;	534	syserr_cb = cb;
389	}	535	}
390		536
391	static void noinline	537	static void noinline
392	syserr (const char *msg)	538	ev_syserr (const char *msg)
393	{	539	{
394	if (!msg)	540	if (!msg)
395	msg = "(libev) system error";	541	msg = "(libev) system error";
396		542
397	if (syserr_cb)	543	if (syserr_cb)
398	syserr_cb (msg);	544	syserr_cb (msg);
399	else	545	else
400	{	546	{
		547	#if EV_AVOID_STDIO
		548	write (STDERR_FILENO, msg, strlen (msg));
		549	write (STDERR_FILENO, ": ", 2);
		550	msg = strerror (errno);
		551	write (STDERR_FILENO, msg, strlen (msg));
		552	write (STDERR_FILENO, "\n", 1);
		553	#else
401	perror (msg);	554	perror (msg);
		555	#endif
402	abort ();	556	abort ();
403	}	557	}
404	}	558	}
405		559
406	static void *	560	static void *
…		…
431	{	585	{
432	ptr = alloc (ptr, size);	586	ptr = alloc (ptr, size);
433		587
434	if (!ptr && size)	588	if (!ptr && size)
435	{	589	{
		590	#if EV_AVOID_STDIO
		591	write (STDERR_FILENO, "libev: memory allocation failed, aborting.",
		592	sizeof ("libev: memory allocation failed, aborting.") - 1);
		593	#else
436	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	594	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		595	#endif
437	abort ();	596	abort ();
438	}	597	}
439		598
440	return ptr;	599	return ptr;
441	}	600	}
…		…
443	#define ev_malloc(size) ev_realloc (0, (size))	602	#define ev_malloc(size) ev_realloc (0, (size))
444	#define ev_free(ptr) ev_realloc ((ptr), 0)	603	#define ev_free(ptr) ev_realloc ((ptr), 0)
445		604
446	/*****************************************************************************/	605	/*****************************************************************************/
447		606
		607	/* set in reify when reification needed */
		608	#define EV_ANFD_REIFY 1
		609
		610	/* file descriptor info structure */
448	typedef struct	611	typedef struct
449	{	612	{
450	WL head;	613	WL head;
451	unsigned char events;	614	unsigned char events; /* the events watched for */
		615	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
		616	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
452	unsigned char reify;	617	unsigned char unused;
		618	#if EV_USE_EPOLL
		619	unsigned int egen; /* generation counter to counter epoll bugs */
		620	#endif
453	#if EV_SELECT_IS_WINSOCKET	621	#if EV_SELECT_IS_WINSOCKET
454	SOCKET handle;	622	SOCKET handle;
455	#endif	623	#endif
456	} ANFD;	624	} ANFD;
457		625
		626	/* stores the pending event set for a given watcher */
458	typedef struct	627	typedef struct
459	{	628	{
460	W w;	629	W w;
461	int events;	630	int events; /* the pending event set for the given watcher */
462	} ANPENDING;	631	} ANPENDING;
463		632
464	#if EV_USE_INOTIFY	633	#if EV_USE_INOTIFY
465	/* hash table entry per inotify-id */	634	/* hash table entry per inotify-id */
466	typedef struct	635	typedef struct
…		…
469	} ANFS;	638	} ANFS;
470	#endif	639	#endif
471		640
472	/* Heap Entry */	641	/* Heap Entry */
473	#if EV_HEAP_CACHE_AT	642	#if EV_HEAP_CACHE_AT
		643	/* a heap element */
474	typedef struct {	644	typedef struct {
475	ev_tstamp at;	645	ev_tstamp at;
476	WT w;	646	WT w;
477	} ANHE;	647	} ANHE;
478		648
479	#define ANHE_w(he) (he).w /* access watcher, read-write */	649	#define ANHE_w(he) (he).w /* access watcher, read-write */
480	#define ANHE_at(he) (he).at /* access cached at, read-only */	650	#define ANHE_at(he) (he).at /* access cached at, read-only */
481	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */	651	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
482	#else	652	#else
		653	/* a heap element */
483	typedef WT ANHE;	654	typedef WT ANHE;
484		655
485	#define ANHE_w(he) (he)	656	#define ANHE_w(he) (he)
486	#define ANHE_at(he) (he)->at	657	#define ANHE_at(he) (he)->at
487	#define ANHE_at_cache(he)	658	#define ANHE_at_cache(he)
…		…
511		682
512	static int ev_default_loop_ptr;	683	static int ev_default_loop_ptr;
513		684
514	#endif	685	#endif
515		686
		687	#if EV_MINIMAL < 2
		688	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		689	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		690	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		691	#else
		692	# define EV_RELEASE_CB (void)0
		693	# define EV_ACQUIRE_CB (void)0
		694	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		695	#endif
		696
		697	#define EVUNLOOP_RECURSE 0x80
		698
516	/*****************************************************************************/	699	/*****************************************************************************/
517		700
		701	#ifndef EV_HAVE_EV_TIME
518	ev_tstamp	702	ev_tstamp
519	ev_time (void)	703	ev_time (void)
520	{	704	{
521	#if EV_USE_REALTIME	705	#if EV_USE_REALTIME
		706	if (expect_true (have_realtime))
		707	{
522	struct timespec ts;	708	struct timespec ts;
523	clock_gettime (CLOCK_REALTIME, &ts);	709	clock_gettime (CLOCK_REALTIME, &ts);
524	return ts.tv_sec + ts.tv_nsec * 1e-9;	710	return ts.tv_sec + ts.tv_nsec * 1e-9;
525	#else	711	}
		712	#endif
		713
526	struct timeval tv;	714	struct timeval tv;
527	gettimeofday (&tv, 0);	715	gettimeofday (&tv, 0);
528	return tv.tv_sec + tv.tv_usec * 1e-6;	716	return tv.tv_sec + tv.tv_usec * 1e-6;
529	#endif
530	}	717	}
		718	#endif
531		719
532	ev_tstamp inline_size	720	inline_size ev_tstamp
533	get_clock (void)	721	get_clock (void)
534	{	722	{
535	#if EV_USE_MONOTONIC	723	#if EV_USE_MONOTONIC
536	if (expect_true (have_monotonic))	724	if (expect_true (have_monotonic))
537	{	725	{
…		…
571		759
572	tv.tv_sec = (time_t)delay;	760	tv.tv_sec = (time_t)delay;
573	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	761	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
574		762
575	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	763	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
576	/* somehting nto guaranteed by newer posix versions, but guaranteed */	764	/* something not guaranteed by newer posix versions, but guaranteed */
577	/* by older ones */	765	/* by older ones */
578	select (0, 0, 0, 0, &tv);	766	select (0, 0, 0, 0, &tv);
579	#endif	767	#endif
580	}	768	}
581	}	769	}
582		770
583	/*****************************************************************************/	771	/*****************************************************************************/
584		772
585	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	773	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
586		774
587	int inline_size	775	/* find a suitable new size for the given array, */
		776	/* hopefully by rounding to a ncie-to-malloc size */
		777	inline_size int
588	array_nextsize (int elem, int cur, int cnt)	778	array_nextsize (int elem, int cur, int cnt)
589	{	779	{
590	int ncur = cur + 1;	780	int ncur = cur + 1;
591		781
592	do	782	do
…		…
609	array_realloc (int elem, void *base, int *cur, int cnt)	799	array_realloc (int elem, void *base, int *cur, int cnt)
610	{	800	{
611	*cur = array_nextsize (elem, *cur, cnt);	801	*cur = array_nextsize (elem, *cur, cnt);
612	return ev_realloc (base, elem * *cur);	802	return ev_realloc (base, elem * *cur);
613	}	803	}
		804
		805	#define array_init_zero(base,count) \
		806	memset ((void *)(base), 0, sizeof (*(base)) * (count))
614		807
615	#define array_needsize(type,base,cur,cnt,init) \	808	#define array_needsize(type,base,cur,cnt,init) \
616	if (expect_false ((cnt) > (cur))) \	809	if (expect_false ((cnt) > (cur))) \
617	{ \	810	{ \
618	int ocur_ = (cur); \	811	int ocur_ = (cur); \
…		…
630	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	823	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
631	}	824	}
632	#endif	825	#endif
633		826
634	#define array_free(stem, idx) \	827	#define array_free(stem, idx) \
635	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	828	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
636		829
637	/*****************************************************************************/	830	/*****************************************************************************/
		831
		832	/* dummy callback for pending events */
		833	static void noinline
		834	pendingcb (EV_P_ ev_prepare *w, int revents)
		835	{
		836	}
638		837
639	void noinline	838	void noinline
640	ev_feed_event (EV_P_ void *w, int revents)	839	ev_feed_event (EV_P_ void *w, int revents)
641	{	840	{
642	W w_ = (W)w;	841	W w_ = (W)w;
…		…
651	pendings [pri][w_->pending - 1].w = w_;	850	pendings [pri][w_->pending - 1].w = w_;
652	pendings [pri][w_->pending - 1].events = revents;	851	pendings [pri][w_->pending - 1].events = revents;
653	}	852	}
654	}	853	}
655		854
656	void inline_speed	855	inline_speed void
		856	feed_reverse (EV_P_ W w)
		857	{
		858	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		859	rfeeds [rfeedcnt++] = w;
		860	}
		861
		862	inline_size void
		863	feed_reverse_done (EV_P_ int revents)
		864	{
		865	do
		866	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		867	while (rfeedcnt);
		868	}
		869
		870	inline_speed void
657	queue_events (EV_P_ W *events, int eventcnt, int type)	871	queue_events (EV_P_ W *events, int eventcnt, int type)
658	{	872	{
659	int i;	873	int i;
660		874
661	for (i = 0; i < eventcnt; ++i)	875	for (i = 0; i < eventcnt; ++i)
662	ev_feed_event (EV_A_ events [i], type);	876	ev_feed_event (EV_A_ events [i], type);
663	}	877	}
664		878
665	/*****************************************************************************/	879	/*****************************************************************************/
666		880
667	void inline_size	881	inline_speed void
668	anfds_init (ANFD *base, int count)
669	{
670	while (count--)
671	{
672	base->head = 0;
673	base->events = EV_NONE;
674	base->reify = 0;
675
676	++base;
677	}
678	}
679
680	void inline_speed
681	fd_event (EV_P_ int fd, int revents)	882	fd_event_nc (EV_P_ int fd, int revents)
682	{	883	{
683	ANFD *anfd = anfds + fd;	884	ANFD *anfd = anfds + fd;
684	ev_io *w;	885	ev_io *w;
685		886
686	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	887	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
690	if (ev)	891	if (ev)
691	ev_feed_event (EV_A_ (W)w, ev);	892	ev_feed_event (EV_A_ (W)w, ev);
692	}	893	}
693	}	894	}
694		895
		896	/* do not submit kernel events for fds that have reify set */
		897	/* because that means they changed while we were polling for new events */
		898	inline_speed void
		899	fd_event (EV_P_ int fd, int revents)
		900	{
		901	ANFD *anfd = anfds + fd;
		902
		903	if (expect_true (!anfd->reify))
		904	fd_event_nc (EV_A_ fd, revents);
		905	}
		906
695	void	907	void
696	ev_feed_fd_event (EV_P_ int fd, int revents)	908	ev_feed_fd_event (EV_P_ int fd, int revents)
697	{	909	{
698	if (fd >= 0 && fd < anfdmax)	910	if (fd >= 0 && fd < anfdmax)
699	fd_event (EV_A_ fd, revents);	911	fd_event_nc (EV_A_ fd, revents);
700	}	912	}
701		913
702	void inline_size	914	/* make sure the external fd watch events are in-sync */
		915	/* with the kernel/libev internal state */
		916	inline_size void
703	fd_reify (EV_P)	917	fd_reify (EV_P)
704	{	918	{
705	int i;	919	int i;
706		920
707	for (i = 0; i < fdchangecnt; ++i)	921	for (i = 0; i < fdchangecnt; ++i)
…		…
717		931
718	#if EV_SELECT_IS_WINSOCKET	932	#if EV_SELECT_IS_WINSOCKET
719	if (events)	933	if (events)
720	{	934	{
721	unsigned long arg;	935	unsigned long arg;
722	#ifdef EV_FD_TO_WIN32_HANDLE
723	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	936	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
724	#else
725	anfd->handle = _get_osfhandle (fd);
726	#endif
727	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	937	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
728	}	938	}
729	#endif	939	#endif
730		940
731	{	941	{
732	unsigned char o_events = anfd->events;	942	unsigned char o_events = anfd->events;
733	unsigned char o_reify = anfd->reify;	943	unsigned char o_reify = anfd->reify;
734		944
735	anfd->reify = 0;	945	anfd->reify = 0;
736	anfd->events = events;	946	anfd->events = events;
737		947
738	if (o_events != events || o_reify & EV_IOFDSET)	948	if (o_events != events || o_reify & EV__IOFDSET)
739	backend_modify (EV_A_ fd, o_events, events);	949	backend_modify (EV_A_ fd, o_events, events);
740	}	950	}
741	}	951	}
742		952
743	fdchangecnt = 0;	953	fdchangecnt = 0;
744	}	954	}
745		955
746	void inline_size	956	/* something about the given fd changed */
		957	inline_size void
747	fd_change (EV_P_ int fd, int flags)	958	fd_change (EV_P_ int fd, int flags)
748	{	959	{
749	unsigned char reify = anfds [fd].reify;	960	unsigned char reify = anfds [fd].reify;
750	anfds [fd].reify |= flags;	961	anfds [fd].reify |= flags;
751		962
…		…
755	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	966	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
756	fdchanges [fdchangecnt - 1] = fd;	967	fdchanges [fdchangecnt - 1] = fd;
757	}	968	}
758	}	969	}
759		970
760	void inline_speed	971	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		972	inline_speed void
761	fd_kill (EV_P_ int fd)	973	fd_kill (EV_P_ int fd)
762	{	974	{
763	ev_io *w;	975	ev_io *w;
764		976
765	while ((w = (ev_io *)anfds [fd].head))	977	while ((w = (ev_io *)anfds [fd].head))
…		…
767	ev_io_stop (EV_A_ w);	979	ev_io_stop (EV_A_ w);
768	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	980	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
769	}	981	}
770	}	982	}
771		983
772	int inline_size	984	/* check whether the given fd is atcually valid, for error recovery */
		985	inline_size int
773	fd_valid (int fd)	986	fd_valid (int fd)
774	{	987	{
775	#ifdef _WIN32	988	#ifdef _WIN32
776	return _get_osfhandle (fd) != -1;	989	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
777	#else	990	#else
778	return fcntl (fd, F_GETFD) != -1;	991	return fcntl (fd, F_GETFD) != -1;
779	#endif	992	#endif
780	}	993	}
781		994
…		…
799		1012
800	for (fd = anfdmax; fd--; )	1013	for (fd = anfdmax; fd--; )
801	if (anfds [fd].events)	1014	if (anfds [fd].events)
802	{	1015	{
803	fd_kill (EV_A_ fd);	1016	fd_kill (EV_A_ fd);
804	return;	1017	break;
805	}	1018	}
806	}	1019	}
807		1020
808	/* usually called after fork if backend needs to re-arm all fds from scratch */	1021	/* usually called after fork if backend needs to re-arm all fds from scratch */
809	static void noinline	1022	static void noinline
…		…
813		1026
814	for (fd = 0; fd < anfdmax; ++fd)	1027	for (fd = 0; fd < anfdmax; ++fd)
815	if (anfds [fd].events)	1028	if (anfds [fd].events)
816	{	1029	{
817	anfds [fd].events = 0;	1030	anfds [fd].events = 0;
		1031	anfds [fd].emask = 0;
818	fd_change (EV_A_ fd, EV_IOFDSET | 1);	1032	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
819	}	1033	}
820	}	1034	}
821		1035
822	/*****************************************************************************/	1036	/*****************************************************************************/
823		1037
…		…
839	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	1053	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
840	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	1054	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
841	#define UPHEAP_DONE(p,k) ((p) == (k))	1055	#define UPHEAP_DONE(p,k) ((p) == (k))
842		1056
843	/* away from the root */	1057	/* away from the root */
844	void inline_speed	1058	inline_speed void
845	downheap (ANHE *heap, int N, int k)	1059	downheap (ANHE *heap, int N, int k)
846	{	1060	{
847	ANHE he = heap [k];	1061	ANHE he = heap [k];
848	ANHE *E = heap + N + HEAP0;	1062	ANHE *E = heap + N + HEAP0;
849		1063
…		…
889	#define HEAP0 1	1103	#define HEAP0 1
890	#define HPARENT(k) ((k) >> 1)	1104	#define HPARENT(k) ((k) >> 1)
891	#define UPHEAP_DONE(p,k) (!(p))	1105	#define UPHEAP_DONE(p,k) (!(p))
892		1106
893	/* away from the root */	1107	/* away from the root */
894	void inline_speed	1108	inline_speed void
895	downheap (ANHE *heap, int N, int k)	1109	downheap (ANHE *heap, int N, int k)
896	{	1110	{
897	ANHE he = heap [k];	1111	ANHE he = heap [k];
898		1112
899	for (;;)	1113	for (;;)
900	{	1114	{
901	int c = k << 1;	1115	int c = k << 1;
902		1116
903	if (c > N + HEAP0 - 1)	1117	if (c >= N + HEAP0)
904	break;	1118	break;
905		1119
906	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1120	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
907	? 1 : 0;	1121	? 1 : 0;
908		1122
…		…
919	ev_active (ANHE_w (he)) = k;	1133	ev_active (ANHE_w (he)) = k;
920	}	1134	}
921	#endif	1135	#endif
922		1136
923	/* towards the root */	1137	/* towards the root */
924	void inline_speed	1138	inline_speed void
925	upheap (ANHE *heap, int k)	1139	upheap (ANHE *heap, int k)
926	{	1140	{
927	ANHE he = heap [k];	1141	ANHE he = heap [k];
928		1142
929	for (;;)	1143	for (;;)
…		…
940		1154
941	heap [k] = he;	1155	heap [k] = he;
942	ev_active (ANHE_w (he)) = k;	1156	ev_active (ANHE_w (he)) = k;
943	}	1157	}
944		1158
945	void inline_size	1159	/* move an element suitably so it is in a correct place */
		1160	inline_size void
946	adjustheap (ANHE *heap, int N, int k)	1161	adjustheap (ANHE *heap, int N, int k)
947	{	1162	{
948	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1163	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
949	upheap (heap, k);	1164	upheap (heap, k);
950	else	1165	else
951	downheap (heap, N, k);	1166	downheap (heap, N, k);
952	}	1167	}
953		1168
954	/* rebuild the heap: this function is used only once and executed rarely */	1169	/* rebuild the heap: this function is used only once and executed rarely */
955	void inline_size	1170	inline_size void
956	reheap (ANHE *heap, int N)	1171	reheap (ANHE *heap, int N)
957	{	1172	{
958	int i;	1173	int i;
959		1174
960	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1175	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
…		…
963	upheap (heap, i + HEAP0);	1178	upheap (heap, i + HEAP0);
964	}	1179	}
965		1180
966	/*****************************************************************************/	1181	/*****************************************************************************/
967		1182
		1183	/* associate signal watchers to a signal signal */
968	typedef struct	1184	typedef struct
969	{	1185	{
		1186	EV_ATOMIC_T pending;
		1187	#if EV_MULTIPLICITY
		1188	EV_P;
		1189	#endif
970	WL head;	1190	WL head;
971	EV_ATOMIC_T gotsig;
972	} ANSIG;	1191	} ANSIG;
973		1192
974	static ANSIG *signals;	1193	static ANSIG signals [EV_NSIG - 1];
975	static int signalmax;
976
977	static EV_ATOMIC_T gotsig;
978
979	void inline_size
980	signals_init (ANSIG *base, int count)
981	{
982	while (count--)
983	{
984	base->head = 0;
985	base->gotsig = 0;
986
987	++base;
988	}
989	}
990		1194
991	/*****************************************************************************/	1195	/*****************************************************************************/
992		1196
993	void inline_speed	1197	/* used to prepare libev internal fd's */
		1198	/* this is not fork-safe */
		1199	inline_speed void
994	fd_intern (int fd)	1200	fd_intern (int fd)
995	{	1201	{
996	#ifdef _WIN32	1202	#ifdef _WIN32
997	unsigned long arg = 1;	1203	unsigned long arg = 1;
998	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1204	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
999	#else	1205	#else
1000	fcntl (fd, F_SETFD, FD_CLOEXEC);	1206	fcntl (fd, F_SETFD, FD_CLOEXEC);
1001	fcntl (fd, F_SETFL, O_NONBLOCK);	1207	fcntl (fd, F_SETFL, O_NONBLOCK);
1002	#endif	1208	#endif
1003	}	1209	}
1004		1210
1005	static void noinline	1211	static void noinline
1006	evpipe_init (EV_P)	1212	evpipe_init (EV_P)
1007	{	1213	{
1008	if (!ev_is_active (&pipeev))	1214	if (!ev_is_active (&pipe_w))
1009	{	1215	{
1010	#if EV_USE_EVENTFD	1216	#if EV_USE_EVENTFD
		1217	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1218	if (evfd < 0 && errno == EINVAL)
1011	if ((evfd = eventfd (0, 0)) >= 0)	1219	evfd = eventfd (0, 0);
		1220
		1221	if (evfd >= 0)
1012	{	1222	{
1013	evpipe [0] = -1;	1223	evpipe [0] = -1;
1014	fd_intern (evfd);	1224	fd_intern (evfd); /* doing it twice doesn't hurt */
1015	ev_io_set (&pipeev, evfd, EV_READ);	1225	ev_io_set (&pipe_w, evfd, EV_READ);
1016	}	1226	}
1017	else	1227	else
1018	#endif	1228	#endif
1019	{	1229	{
1020	while (pipe (evpipe))	1230	while (pipe (evpipe))
1021	syserr ("(libev) error creating signal/async pipe");	1231	ev_syserr ("(libev) error creating signal/async pipe");
1022		1232
1023	fd_intern (evpipe [0]);	1233	fd_intern (evpipe [0]);
1024	fd_intern (evpipe [1]);	1234	fd_intern (evpipe [1]);
1025	ev_io_set (&pipeev, evpipe [0], EV_READ);	1235	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1026	}	1236	}
1027		1237
1028	ev_io_start (EV_A_ &pipeev);	1238	ev_io_start (EV_A_ &pipe_w);
1029	ev_unref (EV_A); /* watcher should not keep loop alive */	1239	ev_unref (EV_A); /* watcher should not keep loop alive */
1030	}	1240	}
1031	}	1241	}
1032		1242
1033	void inline_size	1243	inline_size void
1034	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1244	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1035	{	1245	{
1036	if (!*flag)	1246	if (!*flag)
1037	{	1247	{
1038	int old_errno = errno; /* save errno because write might clobber it */	1248	int old_errno = errno; /* save errno because write might clobber it */
…		…
1051		1261
1052	errno = old_errno;	1262	errno = old_errno;
1053	}	1263	}
1054	}	1264	}
1055		1265
		1266	/* called whenever the libev signal pipe */
		1267	/* got some events (signal, async) */
1056	static void	1268	static void
1057	pipecb (EV_P_ ev_io *iow, int revents)	1269	pipecb (EV_P_ ev_io *iow, int revents)
1058	{	1270	{
		1271	int i;
		1272
1059	#if EV_USE_EVENTFD	1273	#if EV_USE_EVENTFD
1060	if (evfd >= 0)	1274	if (evfd >= 0)
1061	{	1275	{
1062	uint64_t counter;	1276	uint64_t counter;
1063	read (evfd, &counter, sizeof (uint64_t));	1277	read (evfd, &counter, sizeof (uint64_t));
…		…
1067	{	1281	{
1068	char dummy;	1282	char dummy;
1069	read (evpipe [0], &dummy, 1);	1283	read (evpipe [0], &dummy, 1);
1070	}	1284	}
1071		1285
1072	if (gotsig && ev_is_default_loop (EV_A))	1286	if (sig_pending)
1073	{	1287	{
1074	int signum;	1288	sig_pending = 0;
1075	gotsig = 0;
1076		1289
1077	for (signum = signalmax; signum--; )	1290	for (i = EV_NSIG - 1; i--; )
1078	if (signals [signum].gotsig)	1291	if (expect_false (signals [i].pending))
1079	ev_feed_signal_event (EV_A_ signum + 1);	1292	ev_feed_signal_event (EV_A_ i + 1);
1080	}	1293	}
1081		1294
1082	#if EV_ASYNC_ENABLE	1295	#if EV_ASYNC_ENABLE
1083	if (gotasync)	1296	if (async_pending)
1084	{	1297	{
1085	int i;	1298	async_pending = 0;
1086	gotasync = 0;
1087		1299
1088	for (i = asynccnt; i--; )	1300	for (i = asynccnt; i--; )
1089	if (asyncs [i]->sent)	1301	if (asyncs [i]->sent)
1090	{	1302	{
1091	asyncs [i]->sent = 0;	1303	asyncs [i]->sent = 0;
…		…
1099		1311
1100	static void	1312	static void
1101	ev_sighandler (int signum)	1313	ev_sighandler (int signum)
1102	{	1314	{
1103	#if EV_MULTIPLICITY	1315	#if EV_MULTIPLICITY
1104	struct ev_loop *loop = &default_loop_struct;	1316	EV_P = signals [signum - 1].loop;
1105	#endif	1317	#endif
1106		1318
1107	#if _WIN32	1319	#ifdef _WIN32
1108	signal (signum, ev_sighandler);	1320	signal (signum, ev_sighandler);
1109	#endif	1321	#endif
1110		1322
1111	signals [signum - 1].gotsig = 1;	1323	signals [signum - 1].pending = 1;
1112	evpipe_write (EV_A_ &gotsig);	1324	evpipe_write (EV_A_ &sig_pending);
1113	}	1325	}
1114		1326
1115	void noinline	1327	void noinline
1116	ev_feed_signal_event (EV_P_ int signum)	1328	ev_feed_signal_event (EV_P_ int signum)
1117	{	1329	{
1118	WL w;	1330	WL w;
1119		1331
		1332	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1333	return;
		1334
		1335	--signum;
		1336
1120	#if EV_MULTIPLICITY	1337	#if EV_MULTIPLICITY
1121	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1338	/* it is permissible to try to feed a signal to the wrong loop */
1122	#endif	1339	/* or, likely more useful, feeding a signal nobody is waiting for */
1123		1340
1124	--signum;	1341	if (expect_false (signals [signum].loop != EV_A))
1125
1126	if (signum < 0 || signum >= signalmax)
1127	return;	1342	return;
		1343	#endif
1128		1344
1129	signals [signum].gotsig = 0;	1345	signals [signum].pending = 0;
1130		1346
1131	for (w = signals [signum].head; w; w = w->next)	1347	for (w = signals [signum].head; w; w = w->next)
1132	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1348	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1133	}	1349	}
1134		1350
		1351	#if EV_USE_SIGNALFD
		1352	static void
		1353	sigfdcb (EV_P_ ev_io *iow, int revents)
		1354	{
		1355	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1356
		1357	for (;;)
		1358	{
		1359	ssize_t res = read (sigfd, si, sizeof (si));
		1360
		1361	/* not ISO-C, as res might be -1, but works with SuS */
		1362	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1363	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1364
		1365	if (res < (ssize_t)sizeof (si))
		1366	break;
		1367	}
		1368	}
		1369	#endif
		1370
1135	/*****************************************************************************/	1371	/*****************************************************************************/
1136		1372
1137	static WL childs [EV_PID_HASHSIZE];	1373	static WL childs [EV_PID_HASHSIZE];
1138		1374
1139	#ifndef _WIN32	1375	#ifndef _WIN32
…		…
1142		1378
1143	#ifndef WIFCONTINUED	1379	#ifndef WIFCONTINUED
1144	# define WIFCONTINUED(status) 0	1380	# define WIFCONTINUED(status) 0
1145	#endif	1381	#endif
1146		1382
1147	void inline_speed	1383	/* handle a single child status event */
		1384	inline_speed void
1148	child_reap (EV_P_ int chain, int pid, int status)	1385	child_reap (EV_P_ int chain, int pid, int status)
1149	{	1386	{
1150	ev_child *w;	1387	ev_child *w;
1151	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1388	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1152		1389
…		…
1165		1402
1166	#ifndef WCONTINUED	1403	#ifndef WCONTINUED
1167	# define WCONTINUED 0	1404	# define WCONTINUED 0
1168	#endif	1405	#endif
1169		1406
		1407	/* called on sigchld etc., calls waitpid */
1170	static void	1408	static void
1171	childcb (EV_P_ ev_signal *sw, int revents)	1409	childcb (EV_P_ ev_signal *sw, int revents)
1172	{	1410	{
1173	int pid, status;	1411	int pid, status;
1174		1412
…		…
1255	/* kqueue is borked on everything but netbsd apparently */	1493	/* kqueue is borked on everything but netbsd apparently */
1256	/* it usually doesn't work correctly on anything but sockets and pipes */	1494	/* it usually doesn't work correctly on anything but sockets and pipes */
1257	flags &= ~EVBACKEND_KQUEUE;	1495	flags &= ~EVBACKEND_KQUEUE;
1258	#endif	1496	#endif
1259	#ifdef __APPLE__	1497	#ifdef __APPLE__
1260	// flags &= ~EVBACKEND_KQUEUE; for documentation	1498	/* only select works correctly on that "unix-certified" platform */
1261	flags &= ~EVBACKEND_POLL;	1499	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1500	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1262	#endif	1501	#endif
1263		1502
1264	return flags;	1503	return flags;
1265	}	1504	}
1266		1505
…		…
1280	ev_backend (EV_P)	1519	ev_backend (EV_P)
1281	{	1520	{
1282	return backend;	1521	return backend;
1283	}	1522	}
1284		1523
		1524	#if EV_MINIMAL < 2
1285	unsigned int	1525	unsigned int
1286	ev_loop_count (EV_P)	1526	ev_loop_count (EV_P)
1287	{	1527	{
1288	return loop_count;	1528	return loop_count;
1289	}	1529	}
1290		1530
		1531	unsigned int
		1532	ev_loop_depth (EV_P)
		1533	{
		1534	return loop_depth;
		1535	}
		1536
1291	void	1537	void
1292	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1538	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1293	{	1539	{
1294	io_blocktime = interval;	1540	io_blocktime = interval;
1295	}	1541	}
…		…
1298	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1544	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1299	{	1545	{
1300	timeout_blocktime = interval;	1546	timeout_blocktime = interval;
1301	}	1547	}
1302		1548
		1549	void
		1550	ev_set_userdata (EV_P_ void *data)
		1551	{
		1552	userdata = data;
		1553	}
		1554
		1555	void *
		1556	ev_userdata (EV_P)
		1557	{
		1558	return userdata;
		1559	}
		1560
		1561	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1562	{
		1563	invoke_cb = invoke_pending_cb;
		1564	}
		1565
		1566	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1567	{
		1568	release_cb = release;
		1569	acquire_cb = acquire;
		1570	}
		1571	#endif
		1572
		1573	/* initialise a loop structure, must be zero-initialised */
1303	static void noinline	1574	static void noinline
1304	loop_init (EV_P_ unsigned int flags)	1575	loop_init (EV_P_ unsigned int flags)
1305	{	1576	{
1306	if (!backend)	1577	if (!backend)
1307	{	1578	{
		1579	#if EV_USE_REALTIME
		1580	if (!have_realtime)
		1581	{
		1582	struct timespec ts;
		1583
		1584	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1585	have_realtime = 1;
		1586	}
		1587	#endif
		1588
1308	#if EV_USE_MONOTONIC	1589	#if EV_USE_MONOTONIC
		1590	if (!have_monotonic)
1309	{	1591	{
1310	struct timespec ts;	1592	struct timespec ts;
		1593
1311	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1594	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1312	have_monotonic = 1;	1595	have_monotonic = 1;
1313	}	1596	}
1314	#endif	1597	#endif
		1598
		1599	/* pid check not overridable via env */
		1600	#ifndef _WIN32
		1601	if (flags & EVFLAG_FORKCHECK)
		1602	curpid = getpid ();
		1603	#endif
		1604
		1605	if (!(flags & EVFLAG_NOENV)
		1606	&& !enable_secure ()
		1607	&& getenv ("LIBEV_FLAGS"))
		1608	flags = atoi (getenv ("LIBEV_FLAGS"));
1315		1609
1316	ev_rt_now = ev_time ();	1610	ev_rt_now = ev_time ();
1317	mn_now = get_clock ();	1611	mn_now = get_clock ();
1318	now_floor = mn_now;	1612	now_floor = mn_now;
1319	rtmn_diff = ev_rt_now - mn_now;	1613	rtmn_diff = ev_rt_now - mn_now;
		1614	#if EV_MINIMAL < 2
		1615	invoke_cb = ev_invoke_pending;
		1616	#endif
1320		1617
1321	io_blocktime = 0.;	1618	io_blocktime = 0.;
1322	timeout_blocktime = 0.;	1619	timeout_blocktime = 0.;
1323	backend = 0;	1620	backend = 0;
1324	backend_fd = -1;	1621	backend_fd = -1;
1325	gotasync = 0;	1622	sig_pending = 0;
		1623	#if EV_ASYNC_ENABLE
		1624	async_pending = 0;
		1625	#endif
1326	#if EV_USE_INOTIFY	1626	#if EV_USE_INOTIFY
1327	fs_fd = -2;	1627	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1328	#endif	1628	#endif
1329		1629	#if EV_USE_SIGNALFD
1330	/* pid check not overridable via env */	1630	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1331	#ifndef _WIN32
1332	if (flags & EVFLAG_FORKCHECK)
1333	curpid = getpid ();
1334	#endif	1631	#endif
1335
1336	if (!(flags & EVFLAG_NOENV)
1337	&& !enable_secure ()
1338	&& getenv ("LIBEV_FLAGS"))
1339	flags = atoi (getenv ("LIBEV_FLAGS"));
1340		1632
1341	if (!(flags & 0x0000ffffU))	1633	if (!(flags & 0x0000ffffU))
1342	flags |= ev_recommended_backends ();	1634	flags |= ev_recommended_backends ();
1343		1635
1344	#if EV_USE_PORT	1636	#if EV_USE_PORT
…		…
1355	#endif	1647	#endif
1356	#if EV_USE_SELECT	1648	#if EV_USE_SELECT
1357	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1649	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1358	#endif	1650	#endif
1359		1651
		1652	ev_prepare_init (&pending_w, pendingcb);
		1653
1360	ev_init (&pipeev, pipecb);	1654	ev_init (&pipe_w, pipecb);
1361	ev_set_priority (&pipeev, EV_MAXPRI);	1655	ev_set_priority (&pipe_w, EV_MAXPRI);
1362	}	1656	}
1363	}	1657	}
1364		1658
		1659	/* free up a loop structure */
1365	static void noinline	1660	static void noinline
1366	loop_destroy (EV_P)	1661	loop_destroy (EV_P)
1367	{	1662	{
1368	int i;	1663	int i;
1369		1664
1370	if (ev_is_active (&pipeev))	1665	if (ev_is_active (&pipe_w))
1371	{	1666	{
1372	ev_ref (EV_A); /* signal watcher */	1667	/*ev_ref (EV_A);*/
1373	ev_io_stop (EV_A_ &pipeev);	1668	/*ev_io_stop (EV_A_ &pipe_w);*/
1374		1669
1375	#if EV_USE_EVENTFD	1670	#if EV_USE_EVENTFD
1376	if (evfd >= 0)	1671	if (evfd >= 0)
1377	close (evfd);	1672	close (evfd);
1378	#endif	1673	#endif
1379		1674
1380	if (evpipe [0] >= 0)	1675	if (evpipe [0] >= 0)
1381	{	1676	{
1382	close (evpipe [0]);	1677	EV_WIN32_CLOSE_FD (evpipe [0]);
1383	close (evpipe [1]);	1678	EV_WIN32_CLOSE_FD (evpipe [1]);
1384	}	1679	}
1385	}	1680	}
		1681
		1682	#if EV_USE_SIGNALFD
		1683	if (ev_is_active (&sigfd_w))
		1684	close (sigfd);
		1685	#endif
1386		1686
1387	#if EV_USE_INOTIFY	1687	#if EV_USE_INOTIFY
1388	if (fs_fd >= 0)	1688	if (fs_fd >= 0)
1389	close (fs_fd);	1689	close (fs_fd);
1390	#endif	1690	#endif
…		…
1414	#if EV_IDLE_ENABLE	1714	#if EV_IDLE_ENABLE
1415	array_free (idle, [i]);	1715	array_free (idle, [i]);
1416	#endif	1716	#endif
1417	}	1717	}
1418		1718
1419	ev_free (anfds); anfdmax = 0;	1719	ev_free (anfds); anfds = 0; anfdmax = 0;
1420		1720
1421	/* have to use the microsoft-never-gets-it-right macro */	1721	/* have to use the microsoft-never-gets-it-right macro */
		1722	array_free (rfeed, EMPTY);
1422	array_free (fdchange, EMPTY);	1723	array_free (fdchange, EMPTY);
1423	array_free (timer, EMPTY);	1724	array_free (timer, EMPTY);
1424	#if EV_PERIODIC_ENABLE	1725	#if EV_PERIODIC_ENABLE
1425	array_free (periodic, EMPTY);	1726	array_free (periodic, EMPTY);
1426	#endif	1727	#endif
…		…
1435		1736
1436	backend = 0;	1737	backend = 0;
1437	}	1738	}
1438		1739
1439	#if EV_USE_INOTIFY	1740	#if EV_USE_INOTIFY
1440	void inline_size infy_fork (EV_P);	1741	inline_size void infy_fork (EV_P);
1441	#endif	1742	#endif
1442		1743
1443	void inline_size	1744	inline_size void
1444	loop_fork (EV_P)	1745	loop_fork (EV_P)
1445	{	1746	{
1446	#if EV_USE_PORT	1747	#if EV_USE_PORT
1447	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1748	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1448	#endif	1749	#endif
…		…
1454	#endif	1755	#endif
1455	#if EV_USE_INOTIFY	1756	#if EV_USE_INOTIFY
1456	infy_fork (EV_A);	1757	infy_fork (EV_A);
1457	#endif	1758	#endif
1458		1759
1459	if (ev_is_active (&pipeev))	1760	if (ev_is_active (&pipe_w))
1460	{	1761	{
1461	/* this "locks" the handlers against writing to the pipe */	1762	/* this "locks" the handlers against writing to the pipe */
1462	/* while we modify the fd vars */	1763	/* while we modify the fd vars */
1463	gotsig = 1;	1764	sig_pending = 1;
1464	#if EV_ASYNC_ENABLE	1765	#if EV_ASYNC_ENABLE
1465	gotasync = 1;	1766	async_pending = 1;
1466	#endif	1767	#endif
1467		1768
1468	ev_ref (EV_A);	1769	ev_ref (EV_A);
1469	ev_io_stop (EV_A_ &pipeev);	1770	ev_io_stop (EV_A_ &pipe_w);
1470		1771
1471	#if EV_USE_EVENTFD	1772	#if EV_USE_EVENTFD
1472	if (evfd >= 0)	1773	if (evfd >= 0)
1473	close (evfd);	1774	close (evfd);
1474	#endif	1775	#endif
1475		1776
1476	if (evpipe [0] >= 0)	1777	if (evpipe [0] >= 0)
1477	{	1778	{
1478	close (evpipe [0]);	1779	EV_WIN32_CLOSE_FD (evpipe [0]);
1479	close (evpipe [1]);	1780	EV_WIN32_CLOSE_FD (evpipe [1]);
1480	}	1781	}
1481		1782
1482	evpipe_init (EV_A);	1783	evpipe_init (EV_A);
1483	/* now iterate over everything, in case we missed something */	1784	/* now iterate over everything, in case we missed something */
1484	pipecb (EV_A_ &pipeev, EV_READ);	1785	pipecb (EV_A_ &pipe_w, EV_READ);
1485	}	1786	}
1486		1787
1487	postfork = 0;	1788	postfork = 0;
1488	}	1789	}
1489		1790
1490	#if EV_MULTIPLICITY	1791	#if EV_MULTIPLICITY
1491		1792
1492	struct ev_loop *	1793	struct ev_loop *
1493	ev_loop_new (unsigned int flags)	1794	ev_loop_new (unsigned int flags)
1494	{	1795	{
1495	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1796	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1496		1797
1497	memset (loop, 0, sizeof (struct ev_loop));	1798	memset (EV_A, 0, sizeof (struct ev_loop));
1498
1499	loop_init (EV_A_ flags);	1799	loop_init (EV_A_ flags);
1500		1800
1501	if (ev_backend (EV_A))	1801	if (ev_backend (EV_A))
1502	return loop;	1802	return EV_A;
1503		1803
1504	return 0;	1804	return 0;
1505	}	1805	}
1506		1806
1507	void	1807	void
…		…
1514	void	1814	void
1515	ev_loop_fork (EV_P)	1815	ev_loop_fork (EV_P)
1516	{	1816	{
1517	postfork = 1; /* must be in line with ev_default_fork */	1817	postfork = 1; /* must be in line with ev_default_fork */
1518	}	1818	}
		1819	#endif /* multiplicity */
1519		1820
1520	#if EV_VERIFY	1821	#if EV_VERIFY
1521	static void noinline	1822	static void noinline
1522	verify_watcher (EV_P_ W w)	1823	verify_watcher (EV_P_ W w)
1523	{	1824	{
1524	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));	1825	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1525		1826
1526	if (w->pending)	1827	if (w->pending)
1527	assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));	1828	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
1528	}	1829	}
1529		1830
1530	static void noinline	1831	static void noinline
1531	verify_heap (EV_P_ ANHE *heap, int N)	1832	verify_heap (EV_P_ ANHE *heap, int N)
1532	{	1833	{
1533	int i;	1834	int i;
1534		1835
1535	for (i = HEAP0; i < N + HEAP0; ++i)	1836	for (i = HEAP0; i < N + HEAP0; ++i)
1536	{	1837	{
1537	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));	1838	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
1538	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));	1839	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
1539	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));	1840	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
1540		1841
1541	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));	1842	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
1542	}	1843	}
1543	}	1844	}
1544		1845
1545	static void noinline	1846	static void noinline
1546	array_verify (EV_P_ W *ws, int cnt)	1847	array_verify (EV_P_ W *ws, int cnt)
1547	{	1848	{
1548	while (cnt--)	1849	while (cnt--)
1549	{	1850	{
1550	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	1851	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
1551	verify_watcher (EV_A_ ws [cnt]);	1852	verify_watcher (EV_A_ ws [cnt]);
1552	}	1853	}
1553	}	1854	}
1554	#endif	1855	#endif
1555		1856
		1857	#if EV_MINIMAL < 2
1556	void	1858	void
1557	ev_loop_verify (EV_P)	1859	ev_loop_verify (EV_P)
1558	{	1860	{
1559	#if EV_VERIFY	1861	#if EV_VERIFY
1560	int i;	1862	int i;
…		…
1562		1864
1563	assert (activecnt >= -1);	1865	assert (activecnt >= -1);
1564		1866
1565	assert (fdchangemax >= fdchangecnt);	1867	assert (fdchangemax >= fdchangecnt);
1566	for (i = 0; i < fdchangecnt; ++i)	1868	for (i = 0; i < fdchangecnt; ++i)
1567	assert (("negative fd in fdchanges", fdchanges [i] >= 0));	1869	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
1568		1870
1569	assert (anfdmax >= 0);	1871	assert (anfdmax >= 0);
1570	for (i = 0; i < anfdmax; ++i)	1872	for (i = 0; i < anfdmax; ++i)
1571	for (w = anfds [i].head; w; w = w->next)	1873	for (w = anfds [i].head; w; w = w->next)
1572	{	1874	{
1573	verify_watcher (EV_A_ (W)w);	1875	verify_watcher (EV_A_ (W)w);
1574	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));	1876	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
1575	assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));	1877	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
1576	}	1878	}
1577		1879
1578	assert (timermax >= timercnt);	1880	assert (timermax >= timercnt);
1579	verify_heap (EV_A_ timers, timercnt);	1881	verify_heap (EV_A_ timers, timercnt);
1580		1882
…		…
1609	assert (checkmax >= checkcnt);	1911	assert (checkmax >= checkcnt);
1610	array_verify (EV_A_ (W *)checks, checkcnt);	1912	array_verify (EV_A_ (W *)checks, checkcnt);
1611		1913
1612	# if 0	1914	# if 0
1613	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1915	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1614	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1916	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1615	# endif
1616	#endif	1917	# endif
		1918	#endif
1617	}	1919	}
1618		1920	#endif
1619	#endif /* multiplicity */
1620		1921
1621	#if EV_MULTIPLICITY	1922	#if EV_MULTIPLICITY
1622	struct ev_loop *	1923	struct ev_loop *
1623	ev_default_loop_init (unsigned int flags)	1924	ev_default_loop_init (unsigned int flags)
1624	#else	1925	#else
…		…
1627	#endif	1928	#endif
1628	{	1929	{
1629	if (!ev_default_loop_ptr)	1930	if (!ev_default_loop_ptr)
1630	{	1931	{
1631	#if EV_MULTIPLICITY	1932	#if EV_MULTIPLICITY
1632	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1933	EV_P = ev_default_loop_ptr = &default_loop_struct;
1633	#else	1934	#else
1634	ev_default_loop_ptr = 1;	1935	ev_default_loop_ptr = 1;
1635	#endif	1936	#endif
1636		1937
1637	loop_init (EV_A_ flags);	1938	loop_init (EV_A_ flags);
…		…
1654		1955
1655	void	1956	void
1656	ev_default_destroy (void)	1957	ev_default_destroy (void)
1657	{	1958	{
1658	#if EV_MULTIPLICITY	1959	#if EV_MULTIPLICITY
1659	struct ev_loop *loop = ev_default_loop_ptr;	1960	EV_P = ev_default_loop_ptr;
1660	#endif	1961	#endif
		1962
		1963	ev_default_loop_ptr = 0;
1661		1964
1662	#ifndef _WIN32	1965	#ifndef _WIN32
1663	ev_ref (EV_A); /* child watcher */	1966	ev_ref (EV_A); /* child watcher */
1664	ev_signal_stop (EV_A_ &childev);	1967	ev_signal_stop (EV_A_ &childev);
1665	#endif	1968	#endif
…		…
1669		1972
1670	void	1973	void
1671	ev_default_fork (void)	1974	ev_default_fork (void)
1672	{	1975	{
1673	#if EV_MULTIPLICITY	1976	#if EV_MULTIPLICITY
1674	struct ev_loop *loop = ev_default_loop_ptr;	1977	EV_P = ev_default_loop_ptr;
1675	#endif	1978	#endif
1676		1979
1677	if (backend)
1678	postfork = 1; /* must be in line with ev_loop_fork */	1980	postfork = 1; /* must be in line with ev_loop_fork */
1679	}	1981	}
1680		1982
1681	/*****************************************************************************/	1983	/*****************************************************************************/
1682		1984
1683	void	1985	void
1684	ev_invoke (EV_P_ void *w, int revents)	1986	ev_invoke (EV_P_ void *w, int revents)
1685	{	1987	{
1686	EV_CB_INVOKE ((W)w, revents);	1988	EV_CB_INVOKE ((W)w, revents);
1687	}	1989	}
1688		1990
1689	void inline_speed	1991	unsigned int
1690	call_pending (EV_P)	1992	ev_pending_count (EV_P)
		1993	{
		1994	int pri;
		1995	unsigned int count = 0;
		1996
		1997	for (pri = NUMPRI; pri--; )
		1998	count += pendingcnt [pri];
		1999
		2000	return count;
		2001	}
		2002
		2003	void noinline
		2004	ev_invoke_pending (EV_P)
1691	{	2005	{
1692	int pri;	2006	int pri;
1693		2007
1694	for (pri = NUMPRI; pri--; )	2008	for (pri = NUMPRI; pri--; )
1695	while (pendingcnt [pri])	2009	while (pendingcnt [pri])
1696	{	2010	{
1697	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	2011	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1698		2012
1699	if (expect_true (p->w))
1700	{
1701	/*assert (("non-pending watcher on pending list", p->w->pending));*/	2013	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		2014	/* ^ this is no longer true, as pending_w could be here */
1702		2015
1703	p->w->pending = 0;	2016	p->w->pending = 0;
1704	EV_CB_INVOKE (p->w, p->events);	2017	EV_CB_INVOKE (p->w, p->events);
1705	EV_FREQUENT_CHECK;	2018	EV_FREQUENT_CHECK;
1706	}
1707	}	2019	}
1708	}	2020	}
1709		2021
1710	#if EV_IDLE_ENABLE	2022	#if EV_IDLE_ENABLE
1711	void inline_size	2023	/* make idle watchers pending. this handles the "call-idle */
		2024	/* only when higher priorities are idle" logic */
		2025	inline_size void
1712	idle_reify (EV_P)	2026	idle_reify (EV_P)
1713	{	2027	{
1714	if (expect_false (idleall))	2028	if (expect_false (idleall))
1715	{	2029	{
1716	int pri;	2030	int pri;
…		…
1728	}	2042	}
1729	}	2043	}
1730	}	2044	}
1731	#endif	2045	#endif
1732		2046
1733	void inline_size	2047	/* make timers pending */
		2048	inline_size void
1734	timers_reify (EV_P)	2049	timers_reify (EV_P)
1735	{	2050	{
1736	EV_FREQUENT_CHECK;	2051	EV_FREQUENT_CHECK;
1737		2052
1738	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	2053	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1739	{	2054	{
1740	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	2055	do
1741
1742	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1743
1744	/* first reschedule or stop timer */
1745	if (w->repeat)
1746	{	2056	{
		2057	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2058
		2059	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2060
		2061	/* first reschedule or stop timer */
		2062	if (w->repeat)
		2063	{
1747	ev_at (w) += w->repeat;	2064	ev_at (w) += w->repeat;
1748	if (ev_at (w) < mn_now)	2065	if (ev_at (w) < mn_now)
1749	ev_at (w) = mn_now;	2066	ev_at (w) = mn_now;
1750		2067
1751	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	2068	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1752		2069
1753	ANHE_at_cache (timers [HEAP0]);	2070	ANHE_at_cache (timers [HEAP0]);
1754	downheap (timers, timercnt, HEAP0);	2071	downheap (timers, timercnt, HEAP0);
		2072	}
		2073	else
		2074	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2075
		2076	EV_FREQUENT_CHECK;
		2077	feed_reverse (EV_A_ (W)w);
1755	}	2078	}
1756	else	2079	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1757	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1758		2080
1759	EV_FREQUENT_CHECK;
1760	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	2081	feed_reverse_done (EV_A_ EV_TIMEOUT);
1761	}	2082	}
1762	}	2083	}
1763		2084
1764	#if EV_PERIODIC_ENABLE	2085	#if EV_PERIODIC_ENABLE
1765	void inline_size	2086	/* make periodics pending */
		2087	inline_size void
1766	periodics_reify (EV_P)	2088	periodics_reify (EV_P)
1767	{	2089	{
1768	EV_FREQUENT_CHECK;	2090	EV_FREQUENT_CHECK;
1769		2091
1770	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	2092	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1771	{	2093	{
1772	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	2094	int feed_count = 0;
1773		2095
1774	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	2096	do
1775
1776	/* first reschedule or stop timer */
1777	if (w->reschedule_cb)
1778	{	2097	{
		2098	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2099
		2100	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2101
		2102	/* first reschedule or stop timer */
		2103	if (w->reschedule_cb)
		2104	{
1779	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2105	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1780		2106
1781	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	2107	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1782		2108
1783	ANHE_at_cache (periodics [HEAP0]);	2109	ANHE_at_cache (periodics [HEAP0]);
1784	downheap (periodics, periodiccnt, HEAP0);	2110	downheap (periodics, periodiccnt, HEAP0);
		2111	}
		2112	else if (w->interval)
		2113	{
		2114	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2115	/* if next trigger time is not sufficiently in the future, put it there */
		2116	/* this might happen because of floating point inexactness */
		2117	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		2118	{
		2119	ev_at (w) += w->interval;
		2120
		2121	/* if interval is unreasonably low we might still have a time in the past */
		2122	/* so correct this. this will make the periodic very inexact, but the user */
		2123	/* has effectively asked to get triggered more often than possible */
		2124	if (ev_at (w) < ev_rt_now)
		2125	ev_at (w) = ev_rt_now;
		2126	}
		2127
		2128	ANHE_at_cache (periodics [HEAP0]);
		2129	downheap (periodics, periodiccnt, HEAP0);
		2130	}
		2131	else
		2132	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2133
		2134	EV_FREQUENT_CHECK;
		2135	feed_reverse (EV_A_ (W)w);
1785	}	2136	}
1786	else if (w->interval)	2137	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1787	{
1788	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1789	/* if next trigger time is not sufficiently in the future, put it there */
1790	/* this might happen because of floating point inexactness */
1791	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1792	{
1793	ev_at (w) += w->interval;
1794		2138
1795	/* if interval is unreasonably low we might still have a time in the past */
1796	/* so correct this. this will make the periodic very inexact, but the user */
1797	/* has effectively asked to get triggered more often than possible */
1798	if (ev_at (w) < ev_rt_now)
1799	ev_at (w) = ev_rt_now;
1800	}
1801
1802	ANHE_at_cache (periodics [HEAP0]);
1803	downheap (periodics, periodiccnt, HEAP0);
1804	}
1805	else
1806	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1807
1808	EV_FREQUENT_CHECK;
1809	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	2139	feed_reverse_done (EV_A_ EV_PERIODIC);
1810	}	2140	}
1811	}	2141	}
1812		2142
		2143	/* simply recalculate all periodics */
		2144	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1813	static void noinline	2145	static void noinline
1814	periodics_reschedule (EV_P)	2146	periodics_reschedule (EV_P)
1815	{	2147	{
1816	int i;	2148	int i;
1817		2149
…		…
1830		2162
1831	reheap (periodics, periodiccnt);	2163	reheap (periodics, periodiccnt);
1832	}	2164	}
1833	#endif	2165	#endif
1834		2166
1835	void inline_speed	2167	/* adjust all timers by a given offset */
		2168	static void noinline
		2169	timers_reschedule (EV_P_ ev_tstamp adjust)
		2170	{
		2171	int i;
		2172
		2173	for (i = 0; i < timercnt; ++i)
		2174	{
		2175	ANHE *he = timers + i + HEAP0;
		2176	ANHE_w (*he)->at += adjust;
		2177	ANHE_at_cache (*he);
		2178	}
		2179	}
		2180
		2181	/* fetch new monotonic and realtime times from the kernel */
		2182	/* also detect if there was a timejump, and act accordingly */
		2183	inline_speed void
1836	time_update (EV_P_ ev_tstamp max_block)	2184	time_update (EV_P_ ev_tstamp max_block)
1837	{	2185	{
1838	int i;
1839
1840	#if EV_USE_MONOTONIC	2186	#if EV_USE_MONOTONIC
1841	if (expect_true (have_monotonic))	2187	if (expect_true (have_monotonic))
1842	{	2188	{
		2189	int i;
1843	ev_tstamp odiff = rtmn_diff;	2190	ev_tstamp odiff = rtmn_diff;
1844		2191
1845	mn_now = get_clock ();	2192	mn_now = get_clock ();
1846		2193
1847	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2194	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1873	ev_rt_now = ev_time ();	2220	ev_rt_now = ev_time ();
1874	mn_now = get_clock ();	2221	mn_now = get_clock ();
1875	now_floor = mn_now;	2222	now_floor = mn_now;
1876	}	2223	}
1877		2224
		2225	/* no timer adjustment, as the monotonic clock doesn't jump */
		2226	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1878	# if EV_PERIODIC_ENABLE	2227	# if EV_PERIODIC_ENABLE
1879	periodics_reschedule (EV_A);	2228	periodics_reschedule (EV_A);
1880	# endif	2229	# endif
1881	/* no timer adjustment, as the monotonic clock doesn't jump */
1882	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1883	}	2230	}
1884	else	2231	else
1885	#endif	2232	#endif
1886	{	2233	{
1887	ev_rt_now = ev_time ();	2234	ev_rt_now = ev_time ();
1888		2235
1889	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2236	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1890	{	2237	{
		2238	/* adjust timers. this is easy, as the offset is the same for all of them */
		2239	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1891	#if EV_PERIODIC_ENABLE	2240	#if EV_PERIODIC_ENABLE
1892	periodics_reschedule (EV_A);	2241	periodics_reschedule (EV_A);
1893	#endif	2242	#endif
1894	/* adjust timers. this is easy, as the offset is the same for all of them */
1895	for (i = 0; i < timercnt; ++i)
1896	{
1897	ANHE *he = timers + i + HEAP0;
1898	ANHE_w (*he)->at += ev_rt_now - mn_now;
1899	ANHE_at_cache (*he);
1900	}
1901	}	2243	}
1902		2244
1903	mn_now = ev_rt_now;	2245	mn_now = ev_rt_now;
1904	}	2246	}
1905	}	2247	}
1906		2248
1907	void	2249	void
1908	ev_ref (EV_P)
1909	{
1910	++activecnt;
1911	}
1912
1913	void
1914	ev_unref (EV_P)
1915	{
1916	--activecnt;
1917	}
1918
1919	void
1920	ev_now_update (EV_P)
1921	{
1922	time_update (EV_A_ 1e100);
1923	}
1924
1925	static int loop_done;
1926
1927	void
1928	ev_loop (EV_P_ int flags)	2250	ev_loop (EV_P_ int flags)
1929	{	2251	{
		2252	#if EV_MINIMAL < 2
		2253	++loop_depth;
		2254	#endif
		2255
		2256	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2257
1930	loop_done = EVUNLOOP_CANCEL;	2258	loop_done = EVUNLOOP_CANCEL;
1931		2259
1932	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2260	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1933		2261
1934	do	2262	do
1935	{	2263	{
1936	#if EV_VERIFY >= 2	2264	#if EV_VERIFY >= 2
1937	ev_loop_verify (EV_A);	2265	ev_loop_verify (EV_A);
…		…
1950	/* we might have forked, so queue fork handlers */	2278	/* we might have forked, so queue fork handlers */
1951	if (expect_false (postfork))	2279	if (expect_false (postfork))
1952	if (forkcnt)	2280	if (forkcnt)
1953	{	2281	{
1954	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2282	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1955	call_pending (EV_A);	2283	EV_INVOKE_PENDING;
1956	}	2284	}
1957	#endif	2285	#endif
1958		2286
1959	/* queue prepare watchers (and execute them) */	2287	/* queue prepare watchers (and execute them) */
1960	if (expect_false (preparecnt))	2288	if (expect_false (preparecnt))
1961	{	2289	{
1962	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2290	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1963	call_pending (EV_A);	2291	EV_INVOKE_PENDING;
1964	}	2292	}
1965		2293
1966	if (expect_false (!activecnt))	2294	if (expect_false (loop_done))
1967	break;	2295	break;
1968		2296
1969	/* we might have forked, so reify kernel state if necessary */	2297	/* we might have forked, so reify kernel state if necessary */
1970	if (expect_false (postfork))	2298	if (expect_false (postfork))
1971	loop_fork (EV_A);	2299	loop_fork (EV_A);
…		…
1978	ev_tstamp waittime = 0.;	2306	ev_tstamp waittime = 0.;
1979	ev_tstamp sleeptime = 0.;	2307	ev_tstamp sleeptime = 0.;
1980		2308
1981	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2309	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1982	{	2310	{
		2311	/* remember old timestamp for io_blocktime calculation */
		2312	ev_tstamp prev_mn_now = mn_now;
		2313
1983	/* update time to cancel out callback processing overhead */	2314	/* update time to cancel out callback processing overhead */
1984	time_update (EV_A_ 1e100);	2315	time_update (EV_A_ 1e100);
1985		2316
1986	waittime = MAX_BLOCKTIME;	2317	waittime = MAX_BLOCKTIME;
1987		2318
…		…
1997	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2328	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1998	if (waittime > to) waittime = to;	2329	if (waittime > to) waittime = to;
1999	}	2330	}
2000	#endif	2331	#endif
2001		2332
		2333	/* don't let timeouts decrease the waittime below timeout_blocktime */
2002	if (expect_false (waittime < timeout_blocktime))	2334	if (expect_false (waittime < timeout_blocktime))
2003	waittime = timeout_blocktime;	2335	waittime = timeout_blocktime;
2004		2336
2005	sleeptime = waittime - backend_fudge;	2337	/* extra check because io_blocktime is commonly 0 */
2006
2007	if (expect_true (sleeptime > io_blocktime))	2338	if (expect_false (io_blocktime))
2008	sleeptime = io_blocktime;
2009
2010	if (sleeptime)
2011	{	2339	{
		2340	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2341
		2342	if (sleeptime > waittime - backend_fudge)
		2343	sleeptime = waittime - backend_fudge;
		2344
		2345	if (expect_true (sleeptime > 0.))
		2346	{
2012	ev_sleep (sleeptime);	2347	ev_sleep (sleeptime);
2013	waittime -= sleeptime;	2348	waittime -= sleeptime;
		2349	}
2014	}	2350	}
2015	}	2351	}
2016		2352
		2353	#if EV_MINIMAL < 2
2017	++loop_count;	2354	++loop_count;
		2355	#endif
		2356	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2018	backend_poll (EV_A_ waittime);	2357	backend_poll (EV_A_ waittime);
		2358	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2019		2359
2020	/* update ev_rt_now, do magic */	2360	/* update ev_rt_now, do magic */
2021	time_update (EV_A_ waittime + sleeptime);	2361	time_update (EV_A_ waittime + sleeptime);
2022	}	2362	}
2023		2363
…		…
2034		2374
2035	/* queue check watchers, to be executed first */	2375	/* queue check watchers, to be executed first */
2036	if (expect_false (checkcnt))	2376	if (expect_false (checkcnt))
2037	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2377	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2038		2378
2039	call_pending (EV_A);	2379	EV_INVOKE_PENDING;
2040	}	2380	}
2041	while (expect_true (	2381	while (expect_true (
2042	activecnt	2382	activecnt
2043	&& !loop_done	2383	&& !loop_done
2044	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2384	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2045	));	2385	));
2046		2386
2047	if (loop_done == EVUNLOOP_ONE)	2387	if (loop_done == EVUNLOOP_ONE)
2048	loop_done = EVUNLOOP_CANCEL;	2388	loop_done = EVUNLOOP_CANCEL;
		2389
		2390	#if EV_MINIMAL < 2
		2391	--loop_depth;
		2392	#endif
2049	}	2393	}
2050		2394
2051	void	2395	void
2052	ev_unloop (EV_P_ int how)	2396	ev_unloop (EV_P_ int how)
2053	{	2397	{
2054	loop_done = how;	2398	loop_done = how;
2055	}	2399	}
2056		2400
		2401	void
		2402	ev_ref (EV_P)
		2403	{
		2404	++activecnt;
		2405	}
		2406
		2407	void
		2408	ev_unref (EV_P)
		2409	{
		2410	--activecnt;
		2411	}
		2412
		2413	void
		2414	ev_now_update (EV_P)
		2415	{
		2416	time_update (EV_A_ 1e100);
		2417	}
		2418
		2419	void
		2420	ev_suspend (EV_P)
		2421	{
		2422	ev_now_update (EV_A);
		2423	}
		2424
		2425	void
		2426	ev_resume (EV_P)
		2427	{
		2428	ev_tstamp mn_prev = mn_now;
		2429
		2430	ev_now_update (EV_A);
		2431	timers_reschedule (EV_A_ mn_now - mn_prev);
		2432	#if EV_PERIODIC_ENABLE
		2433	/* TODO: really do this? */
		2434	periodics_reschedule (EV_A);
		2435	#endif
		2436	}
		2437
2057	/*****************************************************************************/	2438	/*****************************************************************************/
		2439	/* singly-linked list management, used when the expected list length is short */
2058		2440
2059	void inline_size	2441	inline_size void
2060	wlist_add (WL *head, WL elem)	2442	wlist_add (WL *head, WL elem)
2061	{	2443	{
2062	elem->next = *head;	2444	elem->next = *head;
2063	*head = elem;	2445	*head = elem;
2064	}	2446	}
2065		2447
2066	void inline_size	2448	inline_size void
2067	wlist_del (WL *head, WL elem)	2449	wlist_del (WL *head, WL elem)
2068	{	2450	{
2069	while (*head)	2451	while (*head)
2070	{	2452	{
2071	if (*head == elem)	2453	if (expect_true (*head == elem))
2072	{	2454	{
2073	*head = elem->next;	2455	*head = elem->next;
2074	return;	2456	break;
2075	}	2457	}
2076		2458
2077	head = &(*head)->next;	2459	head = &(*head)->next;
2078	}	2460	}
2079	}	2461	}
2080		2462
2081	void inline_speed	2463	/* internal, faster, version of ev_clear_pending */
		2464	inline_speed void
2082	clear_pending (EV_P_ W w)	2465	clear_pending (EV_P_ W w)
2083	{	2466	{
2084	if (w->pending)	2467	if (w->pending)
2085	{	2468	{
2086	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2469	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2087	w->pending = 0;	2470	w->pending = 0;
2088	}	2471	}
2089	}	2472	}
2090		2473
2091	int	2474	int
…		…
2095	int pending = w_->pending;	2478	int pending = w_->pending;
2096		2479
2097	if (expect_true (pending))	2480	if (expect_true (pending))
2098	{	2481	{
2099	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2482	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2483	p->w = (W)&pending_w;
2100	w_->pending = 0;	2484	w_->pending = 0;
2101	p->w = 0;
2102	return p->events;	2485	return p->events;
2103	}	2486	}
2104	else	2487	else
2105	return 0;	2488	return 0;
2106	}	2489	}
2107		2490
2108	void inline_size	2491	inline_size void
2109	pri_adjust (EV_P_ W w)	2492	pri_adjust (EV_P_ W w)
2110	{	2493	{
2111	int pri = w->priority;	2494	int pri = ev_priority (w);
2112	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2495	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2113	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2496	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2114	w->priority = pri;	2497	ev_set_priority (w, pri);
2115	}	2498	}
2116		2499
2117	void inline_speed	2500	inline_speed void
2118	ev_start (EV_P_ W w, int active)	2501	ev_start (EV_P_ W w, int active)
2119	{	2502	{
2120	pri_adjust (EV_A_ w);	2503	pri_adjust (EV_A_ w);
2121	w->active = active;	2504	w->active = active;
2122	ev_ref (EV_A);	2505	ev_ref (EV_A);
2123	}	2506	}
2124		2507
2125	void inline_size	2508	inline_size void
2126	ev_stop (EV_P_ W w)	2509	ev_stop (EV_P_ W w)
2127	{	2510	{
2128	ev_unref (EV_A);	2511	ev_unref (EV_A);
2129	w->active = 0;	2512	w->active = 0;
2130	}	2513	}
…		…
2137	int fd = w->fd;	2520	int fd = w->fd;
2138		2521
2139	if (expect_false (ev_is_active (w)))	2522	if (expect_false (ev_is_active (w)))
2140	return;	2523	return;
2141		2524
2142	assert (("ev_io_start called with negative fd", fd >= 0));	2525	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2526	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2143		2527
2144	EV_FREQUENT_CHECK;	2528	EV_FREQUENT_CHECK;
2145		2529
2146	ev_start (EV_A_ (W)w, 1);	2530	ev_start (EV_A_ (W)w, 1);
2147	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2531	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2148	wlist_add (&anfds[fd].head, (WL)w);	2532	wlist_add (&anfds[fd].head, (WL)w);
2149		2533
2150	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2534	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2151	w->events &= ~EV_IOFDSET;	2535	w->events &= ~EV__IOFDSET;
2152		2536
2153	EV_FREQUENT_CHECK;	2537	EV_FREQUENT_CHECK;
2154	}	2538	}
2155		2539
2156	void noinline	2540	void noinline
…		…
2158	{	2542	{
2159	clear_pending (EV_A_ (W)w);	2543	clear_pending (EV_A_ (W)w);
2160	if (expect_false (!ev_is_active (w)))	2544	if (expect_false (!ev_is_active (w)))
2161	return;	2545	return;
2162		2546
2163	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2547	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2164		2548
2165	EV_FREQUENT_CHECK;	2549	EV_FREQUENT_CHECK;
2166		2550
2167	wlist_del (&anfds[w->fd].head, (WL)w);	2551	wlist_del (&anfds[w->fd].head, (WL)w);
2168	ev_stop (EV_A_ (W)w);	2552	ev_stop (EV_A_ (W)w);
…		…
2178	if (expect_false (ev_is_active (w)))	2562	if (expect_false (ev_is_active (w)))
2179	return;	2563	return;
2180		2564
2181	ev_at (w) += mn_now;	2565	ev_at (w) += mn_now;
2182		2566
2183	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2567	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2184		2568
2185	EV_FREQUENT_CHECK;	2569	EV_FREQUENT_CHECK;
2186		2570
2187	++timercnt;	2571	++timercnt;
2188	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2572	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2191	ANHE_at_cache (timers [ev_active (w)]);	2575	ANHE_at_cache (timers [ev_active (w)]);
2192	upheap (timers, ev_active (w));	2576	upheap (timers, ev_active (w));
2193		2577
2194	EV_FREQUENT_CHECK;	2578	EV_FREQUENT_CHECK;
2195		2579
2196	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2580	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2197	}	2581	}
2198		2582
2199	void noinline	2583	void noinline
2200	ev_timer_stop (EV_P_ ev_timer *w)	2584	ev_timer_stop (EV_P_ ev_timer *w)
2201	{	2585	{
…		…
2206	EV_FREQUENT_CHECK;	2590	EV_FREQUENT_CHECK;
2207		2591
2208	{	2592	{
2209	int active = ev_active (w);	2593	int active = ev_active (w);
2210		2594
2211	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2595	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2212		2596
2213	--timercnt;	2597	--timercnt;
2214		2598
2215	if (expect_true (active < timercnt + HEAP0))	2599	if (expect_true (active < timercnt + HEAP0))
2216	{	2600	{
2217	timers [active] = timers [timercnt + HEAP0];	2601	timers [active] = timers [timercnt + HEAP0];
2218	adjustheap (timers, timercnt, active);	2602	adjustheap (timers, timercnt, active);
2219	}	2603	}
2220	}	2604	}
2221		2605
2222	EV_FREQUENT_CHECK;
2223
2224	ev_at (w) -= mn_now;	2606	ev_at (w) -= mn_now;
2225		2607
2226	ev_stop (EV_A_ (W)w);	2608	ev_stop (EV_A_ (W)w);
		2609
		2610	EV_FREQUENT_CHECK;
2227	}	2611	}
2228		2612
2229	void noinline	2613	void noinline
2230	ev_timer_again (EV_P_ ev_timer *w)	2614	ev_timer_again (EV_P_ ev_timer *w)
2231	{	2615	{
…		…
2249	}	2633	}
2250		2634
2251	EV_FREQUENT_CHECK;	2635	EV_FREQUENT_CHECK;
2252	}	2636	}
2253		2637
		2638	ev_tstamp
		2639	ev_timer_remaining (EV_P_ ev_timer *w)
		2640	{
		2641	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2642	}
		2643
2254	#if EV_PERIODIC_ENABLE	2644	#if EV_PERIODIC_ENABLE
2255	void noinline	2645	void noinline
2256	ev_periodic_start (EV_P_ ev_periodic *w)	2646	ev_periodic_start (EV_P_ ev_periodic *w)
2257	{	2647	{
2258	if (expect_false (ev_is_active (w)))	2648	if (expect_false (ev_is_active (w)))
…		…
2260		2650
2261	if (w->reschedule_cb)	2651	if (w->reschedule_cb)
2262	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2652	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2263	else if (w->interval)	2653	else if (w->interval)
2264	{	2654	{
2265	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2655	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2266	/* this formula differs from the one in periodic_reify because we do not always round up */	2656	/* this formula differs from the one in periodic_reify because we do not always round up */
2267	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2657	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2268	}	2658	}
2269	else	2659	else
2270	ev_at (w) = w->offset;	2660	ev_at (w) = w->offset;
…		…
2278	ANHE_at_cache (periodics [ev_active (w)]);	2668	ANHE_at_cache (periodics [ev_active (w)]);
2279	upheap (periodics, ev_active (w));	2669	upheap (periodics, ev_active (w));
2280		2670
2281	EV_FREQUENT_CHECK;	2671	EV_FREQUENT_CHECK;
2282		2672
2283	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2673	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2284	}	2674	}
2285		2675
2286	void noinline	2676	void noinline
2287	ev_periodic_stop (EV_P_ ev_periodic *w)	2677	ev_periodic_stop (EV_P_ ev_periodic *w)
2288	{	2678	{
…		…
2293	EV_FREQUENT_CHECK;	2683	EV_FREQUENT_CHECK;
2294		2684
2295	{	2685	{
2296	int active = ev_active (w);	2686	int active = ev_active (w);
2297		2687
2298	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2688	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2299		2689
2300	--periodiccnt;	2690	--periodiccnt;
2301		2691
2302	if (expect_true (active < periodiccnt + HEAP0))	2692	if (expect_true (active < periodiccnt + HEAP0))
2303	{	2693	{
2304	periodics [active] = periodics [periodiccnt + HEAP0];	2694	periodics [active] = periodics [periodiccnt + HEAP0];
2305	adjustheap (periodics, periodiccnt, active);	2695	adjustheap (periodics, periodiccnt, active);
2306	}	2696	}
2307	}	2697	}
2308		2698
2309	EV_FREQUENT_CHECK;
2310
2311	ev_stop (EV_A_ (W)w);	2699	ev_stop (EV_A_ (W)w);
		2700
		2701	EV_FREQUENT_CHECK;
2312	}	2702	}
2313		2703
2314	void noinline	2704	void noinline
2315	ev_periodic_again (EV_P_ ev_periodic *w)	2705	ev_periodic_again (EV_P_ ev_periodic *w)
2316	{	2706	{
…		…
2325	#endif	2715	#endif
2326		2716
2327	void noinline	2717	void noinline
2328	ev_signal_start (EV_P_ ev_signal *w)	2718	ev_signal_start (EV_P_ ev_signal *w)
2329	{	2719	{
2330	#if EV_MULTIPLICITY
2331	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2332	#endif
2333	if (expect_false (ev_is_active (w)))	2720	if (expect_false (ev_is_active (w)))
2334	return;	2721	return;
2335		2722
2336	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2723	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2337		2724
2338	evpipe_init (EV_A);	2725	#if EV_MULTIPLICITY
		2726	assert (("libev: a signal must not be attached to two different loops",
		2727	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2339		2728
2340	EV_FREQUENT_CHECK;	2729	signals [w->signum - 1].loop = EV_A;
		2730	#endif
2341		2731
		2732	EV_FREQUENT_CHECK;
		2733
		2734	#if EV_USE_SIGNALFD
		2735	if (sigfd == -2)
2342	{	2736	{
2343	#ifndef _WIN32	2737	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2344	sigset_t full, prev;	2738	if (sigfd < 0 && errno == EINVAL)
2345	sigfillset (&full);	2739	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2346	sigprocmask (SIG_SETMASK, &full, &prev);
2347	#endif
2348		2740
2349	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2741	if (sigfd >= 0)
		2742	{
		2743	fd_intern (sigfd); /* doing it twice will not hurt */
2350		2744
2351	#ifndef _WIN32	2745	sigemptyset (&sigfd_set);
2352	sigprocmask (SIG_SETMASK, &prev, 0);	2746
2353	#endif	2747	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2748	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2749	ev_io_start (EV_A_ &sigfd_w);
		2750	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2751	}
2354	}	2752	}
		2753
		2754	if (sigfd >= 0)
		2755	{
		2756	/* TODO: check .head */
		2757	sigaddset (&sigfd_set, w->signum);
		2758	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2759
		2760	signalfd (sigfd, &sigfd_set, 0);
		2761	}
		2762	#endif
2355		2763
2356	ev_start (EV_A_ (W)w, 1);	2764	ev_start (EV_A_ (W)w, 1);
2357	wlist_add (&signals [w->signum - 1].head, (WL)w);	2765	wlist_add (&signals [w->signum - 1].head, (WL)w);
2358		2766
2359	if (!((WL)w)->next)	2767	if (!((WL)w)->next)
		2768	# if EV_USE_SIGNALFD
		2769	if (sigfd < 0) /*TODO*/
		2770	# endif
2360	{	2771	{
2361	#if _WIN32	2772	# ifdef _WIN32
		2773	evpipe_init (EV_A);
		2774
2362	signal (w->signum, ev_sighandler);	2775	signal (w->signum, ev_sighandler);
2363	#else	2776	# else
2364	struct sigaction sa;	2777	struct sigaction sa;
		2778
		2779	evpipe_init (EV_A);
		2780
2365	sa.sa_handler = ev_sighandler;	2781	sa.sa_handler = ev_sighandler;
2366	sigfillset (&sa.sa_mask);	2782	sigfillset (&sa.sa_mask);
2367	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2783	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2368	sigaction (w->signum, &sa, 0);	2784	sigaction (w->signum, &sa, 0);
		2785
		2786	sigemptyset (&sa.sa_mask);
		2787	sigaddset (&sa.sa_mask, w->signum);
		2788	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2369	#endif	2789	#endif
2370	}	2790	}
2371		2791
2372	EV_FREQUENT_CHECK;	2792	EV_FREQUENT_CHECK;
2373	}	2793	}
2374		2794
2375	void noinline	2795	void noinline
…		…
2383		2803
2384	wlist_del (&signals [w->signum - 1].head, (WL)w);	2804	wlist_del (&signals [w->signum - 1].head, (WL)w);
2385	ev_stop (EV_A_ (W)w);	2805	ev_stop (EV_A_ (W)w);
2386		2806
2387	if (!signals [w->signum - 1].head)	2807	if (!signals [w->signum - 1].head)
		2808	{
		2809	#if EV_MULTIPLICITY
		2810	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2811	#endif
		2812	#if EV_USE_SIGNALFD
		2813	if (sigfd >= 0)
		2814	{
		2815	sigset_t ss;
		2816
		2817	sigemptyset (&ss);
		2818	sigaddset (&ss, w->signum);
		2819	sigdelset (&sigfd_set, w->signum);
		2820
		2821	signalfd (sigfd, &sigfd_set, 0);
		2822	sigprocmask (SIG_UNBLOCK, &ss, 0);
		2823	}
		2824	else
		2825	#endif
2388	signal (w->signum, SIG_DFL);	2826	signal (w->signum, SIG_DFL);
		2827	}
2389		2828
2390	EV_FREQUENT_CHECK;	2829	EV_FREQUENT_CHECK;
2391	}	2830	}
2392		2831
2393	void	2832	void
2394	ev_child_start (EV_P_ ev_child *w)	2833	ev_child_start (EV_P_ ev_child *w)
2395	{	2834	{
2396	#if EV_MULTIPLICITY	2835	#if EV_MULTIPLICITY
2397	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2836	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2398	#endif	2837	#endif
2399	if (expect_false (ev_is_active (w)))	2838	if (expect_false (ev_is_active (w)))
2400	return;	2839	return;
2401		2840
2402	EV_FREQUENT_CHECK;	2841	EV_FREQUENT_CHECK;
…		…
2427	# ifdef _WIN32	2866	# ifdef _WIN32
2428	# undef lstat	2867	# undef lstat
2429	# define lstat(a,b) _stati64 (a,b)	2868	# define lstat(a,b) _stati64 (a,b)
2430	# endif	2869	# endif
2431		2870
2432	#define DEF_STAT_INTERVAL 5.0074891	2871	#define DEF_STAT_INTERVAL 5.0074891
		2872	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2433	#define MIN_STAT_INTERVAL 0.1074891	2873	#define MIN_STAT_INTERVAL 0.1074891
2434		2874
2435	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2875	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2436		2876
2437	#if EV_USE_INOTIFY	2877	#if EV_USE_INOTIFY
2438	# define EV_INOTIFY_BUFSIZE 8192	2878
		2879	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		2880	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2439		2881
2440	static void noinline	2882	static void noinline
2441	infy_add (EV_P_ ev_stat *w)	2883	infy_add (EV_P_ ev_stat *w)
2442	{	2884	{
2443	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);	2885	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);
2444		2886
2445	if (w->wd < 0)	2887	if (w->wd >= 0)
		2888	{
		2889	struct statfs sfs;
		2890
		2891	/* now local changes will be tracked by inotify, but remote changes won't */
		2892	/* unless the filesystem is known to be local, we therefore still poll */
		2893	/* also do poll on <2.6.25, but with normal frequency */
		2894
		2895	if (!fs_2625)
		2896	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2897	else if (!statfs (w->path, &sfs)
		2898	&& (sfs.f_type == 0x1373 /* devfs */
		2899	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2900	|| sfs.f_type == 0x3153464a /* jfs */
		2901	|| sfs.f_type == 0x52654973 /* reiser3 */
		2902	|| sfs.f_type == 0x01021994 /* tempfs */
		2903	|| sfs.f_type == 0x58465342 /* xfs */))
		2904	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2905	else
		2906	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2446	{	2907	}
2447	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2908	else
		2909	{
		2910	/* can't use inotify, continue to stat */
		2911	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2448		2912
2449	/* monitor some parent directory for speedup hints */	2913	/* if path is not there, monitor some parent directory for speedup hints */
2450	/* note that exceeding the hardcoded limit is not a correctness issue, */	2914	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2451	/* but an efficiency issue only */	2915	/* but an efficiency issue only */
2452	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2916	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2453	{	2917	{
2454	char path [4096];	2918	char path [4096];
2455	strcpy (path, w->path);	2919	strcpy (path, w->path);
…		…
2459	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2923	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2460	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2924	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2461		2925
2462	char *pend = strrchr (path, '/');	2926	char *pend = strrchr (path, '/');
2463		2927
2464	if (!pend)	2928	if (!pend || pend == path)
2465	break; /* whoops, no '/', complain to your admin */	2929	break;
2466		2930
2467	*pend = 0;	2931	*pend = 0;
2468	w->wd = inotify_add_watch (fs_fd, path, mask);	2932	w->wd = inotify_add_watch (fs_fd, path, mask);
2469	}	2933	}
2470	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2934	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2471	}	2935	}
2472	}	2936	}
2473	else
2474	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2475		2937
2476	if (w->wd >= 0)	2938	if (w->wd >= 0)
2477	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2939	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2940
		2941	/* now re-arm timer, if required */
		2942	if (ev_is_active (&w->timer)) ev_ref (EV_A);
		2943	ev_timer_again (EV_A_ &w->timer);
		2944	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2478	}	2945	}
2479		2946
2480	static void noinline	2947	static void noinline
2481	infy_del (EV_P_ ev_stat *w)	2948	infy_del (EV_P_ ev_stat *w)
2482	{	2949	{
…		…
2496		2963
2497	static void noinline	2964	static void noinline
2498	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2965	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2499	{	2966	{
2500	if (slot < 0)	2967	if (slot < 0)
2501	/* overflow, need to check for all hahs slots */	2968	/* overflow, need to check for all hash slots */
2502	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2969	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2503	infy_wd (EV_A_ slot, wd, ev);	2970	infy_wd (EV_A_ slot, wd, ev);
2504	else	2971	else
2505	{	2972	{
2506	WL w_;	2973	WL w_;
…		…
2512		2979
2513	if (w->wd == wd || wd == -1)	2980	if (w->wd == wd || wd == -1)
2514	{	2981	{
2515	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2982	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2516	{	2983	{
		2984	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2517	w->wd = -1;	2985	w->wd = -1;
2518	infy_add (EV_A_ w); /* re-add, no matter what */	2986	infy_add (EV_A_ w); /* re-add, no matter what */
2519	}	2987	}
2520		2988
2521	stat_timer_cb (EV_A_ &w->timer, 0);	2989	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2526		2994
2527	static void	2995	static void
2528	infy_cb (EV_P_ ev_io *w, int revents)	2996	infy_cb (EV_P_ ev_io *w, int revents)
2529	{	2997	{
2530	char buf [EV_INOTIFY_BUFSIZE];	2998	char buf [EV_INOTIFY_BUFSIZE];
2531	struct inotify_event *ev = (struct inotify_event *)buf;
2532	int ofs;	2999	int ofs;
2533	int len = read (fs_fd, buf, sizeof (buf));	3000	int len = read (fs_fd, buf, sizeof (buf));
2534		3001
2535	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	3002	for (ofs = 0; ofs < len; )
		3003	{
		3004	struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2536	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3005	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		3006	ofs += sizeof (struct inotify_event) + ev->len;
		3007	}
2537	}	3008	}
2538		3009
2539	void inline_size	3010	inline_size unsigned int
		3011	ev_linux_version (void)
		3012	{
		3013	struct utsname buf;
		3014	unsigned int v;
		3015	int i;
		3016	char *p = buf.release;
		3017
		3018	if (uname (&buf))
		3019	return 0;
		3020
		3021	for (i = 3+1; --i; )
		3022	{
		3023	unsigned int c = 0;
		3024
		3025	for (;;)
		3026	{
		3027	if (*p >= '0' && *p <= '9')
		3028	c = c * 10 + *p++ - '0';
		3029	else
		3030	{
		3031	p += *p == '.';
		3032	break;
		3033	}
		3034	}
		3035
		3036	v = (v << 8) | c;
		3037	}
		3038
		3039	return v;
		3040	}
		3041
		3042	inline_size void
		3043	ev_check_2625 (EV_P)
		3044	{
		3045	/* kernels < 2.6.25 are borked
		3046	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		3047	*/
		3048	if (ev_linux_version () < 0x020619)
		3049	return;
		3050
		3051	fs_2625 = 1;
		3052	}
		3053
		3054	inline_size int
		3055	infy_newfd (void)
		3056	{
		3057	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3058	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3059	if (fd >= 0)
		3060	return fd;
		3061	#endif
		3062	return inotify_init ();
		3063	}
		3064
		3065	inline_size void
2540	infy_init (EV_P)	3066	infy_init (EV_P)
2541	{	3067	{
2542	if (fs_fd != -2)	3068	if (fs_fd != -2)
2543	return;	3069	return;
2544		3070
		3071	fs_fd = -1;
		3072
		3073	ev_check_2625 (EV_A);
		3074
2545	fs_fd = inotify_init ();	3075	fs_fd = infy_newfd ();
2546		3076
2547	if (fs_fd >= 0)	3077	if (fs_fd >= 0)
2548	{	3078	{
		3079	fd_intern (fs_fd);
2549	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3080	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2550	ev_set_priority (&fs_w, EV_MAXPRI);	3081	ev_set_priority (&fs_w, EV_MAXPRI);
2551	ev_io_start (EV_A_ &fs_w);	3082	ev_io_start (EV_A_ &fs_w);
		3083	ev_unref (EV_A);
2552	}	3084	}
2553	}	3085	}
2554		3086
2555	void inline_size	3087	inline_size void
2556	infy_fork (EV_P)	3088	infy_fork (EV_P)
2557	{	3089	{
2558	int slot;	3090	int slot;
2559		3091
2560	if (fs_fd < 0)	3092	if (fs_fd < 0)
2561	return;	3093	return;
2562		3094
		3095	ev_ref (EV_A);
		3096	ev_io_stop (EV_A_ &fs_w);
2563	close (fs_fd);	3097	close (fs_fd);
2564	fs_fd = inotify_init ();	3098	fs_fd = infy_newfd ();
		3099
		3100	if (fs_fd >= 0)
		3101	{
		3102	fd_intern (fs_fd);
		3103	ev_io_set (&fs_w, fs_fd, EV_READ);
		3104	ev_io_start (EV_A_ &fs_w);
		3105	ev_unref (EV_A);
		3106	}
2565		3107
2566	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3108	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2567	{	3109	{
2568	WL w_ = fs_hash [slot].head;	3110	WL w_ = fs_hash [slot].head;
2569	fs_hash [slot].head = 0;	3111	fs_hash [slot].head = 0;
…		…
2576	w->wd = -1;	3118	w->wd = -1;
2577		3119
2578	if (fs_fd >= 0)	3120	if (fs_fd >= 0)
2579	infy_add (EV_A_ w); /* re-add, no matter what */	3121	infy_add (EV_A_ w); /* re-add, no matter what */
2580	else	3122	else
		3123	{
		3124	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3125	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2581	ev_timer_start (EV_A_ &w->timer);	3126	ev_timer_again (EV_A_ &w->timer);
		3127	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3128	}
2582	}	3129	}
2583
2584	}	3130	}
2585	}	3131	}
2586		3132
2587	#endif	3133	#endif
2588		3134
…		…
2604	static void noinline	3150	static void noinline
2605	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3151	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2606	{	3152	{
2607	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	3153	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2608		3154
2609	/* we copy this here each the time so that */	3155	ev_statdata prev = w->attr;
2610	/* prev has the old value when the callback gets invoked */
2611	w->prev = w->attr;
2612	ev_stat_stat (EV_A_ w);	3156	ev_stat_stat (EV_A_ w);
2613		3157
2614	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3158	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2615	if (	3159	if (
2616	w->prev.st_dev != w->attr.st_dev	3160	prev.st_dev != w->attr.st_dev
2617	|| w->prev.st_ino != w->attr.st_ino	3161	|| prev.st_ino != w->attr.st_ino
2618	|| w->prev.st_mode != w->attr.st_mode	3162	|| prev.st_mode != w->attr.st_mode
2619	|| w->prev.st_nlink != w->attr.st_nlink	3163	|| prev.st_nlink != w->attr.st_nlink
2620	|| w->prev.st_uid != w->attr.st_uid	3164	|| prev.st_uid != w->attr.st_uid
2621	|| w->prev.st_gid != w->attr.st_gid	3165	|| prev.st_gid != w->attr.st_gid
2622	|| w->prev.st_rdev != w->attr.st_rdev	3166	|| prev.st_rdev != w->attr.st_rdev
2623	|| w->prev.st_size != w->attr.st_size	3167	|| prev.st_size != w->attr.st_size
2624	|| w->prev.st_atime != w->attr.st_atime	3168	|| prev.st_atime != w->attr.st_atime
2625	|| w->prev.st_mtime != w->attr.st_mtime	3169	|| prev.st_mtime != w->attr.st_mtime
2626	|| w->prev.st_ctime != w->attr.st_ctime	3170	|| prev.st_ctime != w->attr.st_ctime
2627	) {	3171	) {
		3172	/* we only update w->prev on actual differences */
		3173	/* in case we test more often than invoke the callback, */
		3174	/* to ensure that prev is always different to attr */
		3175	w->prev = prev;
		3176
2628	#if EV_USE_INOTIFY	3177	#if EV_USE_INOTIFY
		3178	if (fs_fd >= 0)
		3179	{
2629	infy_del (EV_A_ w);	3180	infy_del (EV_A_ w);
2630	infy_add (EV_A_ w);	3181	infy_add (EV_A_ w);
2631	ev_stat_stat (EV_A_ w); /* avoid race... */	3182	ev_stat_stat (EV_A_ w); /* avoid race... */
		3183	}
2632	#endif	3184	#endif
2633		3185
2634	ev_feed_event (EV_A_ w, EV_STAT);	3186	ev_feed_event (EV_A_ w, EV_STAT);
2635	}	3187	}
2636	}	3188	}
…		…
2639	ev_stat_start (EV_P_ ev_stat *w)	3191	ev_stat_start (EV_P_ ev_stat *w)
2640	{	3192	{
2641	if (expect_false (ev_is_active (w)))	3193	if (expect_false (ev_is_active (w)))
2642	return;	3194	return;
2643		3195
2644	/* since we use memcmp, we need to clear any padding data etc. */
2645	memset (&w->prev, 0, sizeof (ev_statdata));
2646	memset (&w->attr, 0, sizeof (ev_statdata));
2647
2648	ev_stat_stat (EV_A_ w);	3196	ev_stat_stat (EV_A_ w);
2649		3197
		3198	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2650	if (w->interval < MIN_STAT_INTERVAL)	3199	w->interval = MIN_STAT_INTERVAL;
2651	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2652		3200
2653	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3201	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2654	ev_set_priority (&w->timer, ev_priority (w));	3202	ev_set_priority (&w->timer, ev_priority (w));
2655		3203
2656	#if EV_USE_INOTIFY	3204	#if EV_USE_INOTIFY
2657	infy_init (EV_A);	3205	infy_init (EV_A);
2658		3206
2659	if (fs_fd >= 0)	3207	if (fs_fd >= 0)
2660	infy_add (EV_A_ w);	3208	infy_add (EV_A_ w);
2661	else	3209	else
2662	#endif	3210	#endif
		3211	{
2663	ev_timer_start (EV_A_ &w->timer);	3212	ev_timer_again (EV_A_ &w->timer);
		3213	ev_unref (EV_A);
		3214	}
2664		3215
2665	ev_start (EV_A_ (W)w, 1);	3216	ev_start (EV_A_ (W)w, 1);
2666		3217
2667	EV_FREQUENT_CHECK;	3218	EV_FREQUENT_CHECK;
2668	}	3219	}
…		…
2677	EV_FREQUENT_CHECK;	3228	EV_FREQUENT_CHECK;
2678		3229
2679	#if EV_USE_INOTIFY	3230	#if EV_USE_INOTIFY
2680	infy_del (EV_A_ w);	3231	infy_del (EV_A_ w);
2681	#endif	3232	#endif
		3233
		3234	if (ev_is_active (&w->timer))
		3235	{
		3236	ev_ref (EV_A);
2682	ev_timer_stop (EV_A_ &w->timer);	3237	ev_timer_stop (EV_A_ &w->timer);
		3238	}
2683		3239
2684	ev_stop (EV_A_ (W)w);	3240	ev_stop (EV_A_ (W)w);
2685		3241
2686	EV_FREQUENT_CHECK;	3242	EV_FREQUENT_CHECK;
2687	}	3243	}
…		…
2828	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3384	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2829	{	3385	{
2830	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3386	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2831		3387
2832	{	3388	{
2833	struct ev_loop *loop = w->other;	3389	EV_P = w->other;
2834		3390
2835	while (fdchangecnt)	3391	while (fdchangecnt)
2836	{	3392	{
2837	fd_reify (EV_A);	3393	fd_reify (EV_A);
2838	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3394	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
2843	static void	3399	static void
2844	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)	3400	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
2845	{	3401	{
2846	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));	3402	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2847		3403
		3404	ev_embed_stop (EV_A_ w);
		3405
2848	{	3406	{
2849	struct ev_loop *loop = w->other;	3407	EV_P = w->other;
2850		3408
2851	ev_loop_fork (EV_A);	3409	ev_loop_fork (EV_A);
		3410	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2852	}	3411	}
		3412
		3413	ev_embed_start (EV_A_ w);
2853	}	3414	}
2854		3415
2855	#if 0	3416	#if 0
2856	static void	3417	static void
2857	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3418	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
…		…
2865	{	3426	{
2866	if (expect_false (ev_is_active (w)))	3427	if (expect_false (ev_is_active (w)))
2867	return;	3428	return;
2868		3429
2869	{	3430	{
2870	struct ev_loop *loop = w->other;	3431	EV_P = w->other;
2871	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3432	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2872	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3433	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2873	}	3434	}
2874		3435
2875	EV_FREQUENT_CHECK;	3436	EV_FREQUENT_CHECK;
2876		3437
…		…
2902		3463
2903	ev_io_stop (EV_A_ &w->io);	3464	ev_io_stop (EV_A_ &w->io);
2904	ev_prepare_stop (EV_A_ &w->prepare);	3465	ev_prepare_stop (EV_A_ &w->prepare);
2905	ev_fork_stop (EV_A_ &w->fork);	3466	ev_fork_stop (EV_A_ &w->fork);
2906		3467
		3468	ev_stop (EV_A_ (W)w);
		3469
2907	EV_FREQUENT_CHECK;	3470	EV_FREQUENT_CHECK;
2908	}	3471	}
2909	#endif	3472	#endif
2910		3473
2911	#if EV_FORK_ENABLE	3474	#if EV_FORK_ENABLE
…		…
2987		3550
2988	void	3551	void
2989	ev_async_send (EV_P_ ev_async *w)	3552	ev_async_send (EV_P_ ev_async *w)
2990	{	3553	{
2991	w->sent = 1;	3554	w->sent = 1;
2992	evpipe_write (EV_A_ &gotasync);	3555	evpipe_write (EV_A_ &async_pending);
2993	}	3556	}
2994	#endif	3557	#endif
2995		3558
2996	/*****************************************************************************/	3559	/*****************************************************************************/
2997		3560
…		…
3059	ev_timer_set (&once->to, timeout, 0.);	3622	ev_timer_set (&once->to, timeout, 0.);
3060	ev_timer_start (EV_A_ &once->to);	3623	ev_timer_start (EV_A_ &once->to);
3061	}	3624	}
3062	}	3625	}
3063		3626
		3627	/*****************************************************************************/
		3628
		3629	#if EV_WALK_ENABLE
		3630	void
		3631	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3632	{
		3633	int i, j;
		3634	ev_watcher_list *wl, *wn;
		3635
		3636	if (types & (EV_IO | EV_EMBED))
		3637	for (i = 0; i < anfdmax; ++i)
		3638	for (wl = anfds [i].head; wl; )
		3639	{
		3640	wn = wl->next;
		3641
		3642	#if EV_EMBED_ENABLE
		3643	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3644	{
		3645	if (types & EV_EMBED)
		3646	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3647	}
		3648	else
		3649	#endif
		3650	#if EV_USE_INOTIFY
		3651	if (ev_cb ((ev_io *)wl) == infy_cb)
		3652	;
		3653	else
		3654	#endif
		3655	if ((ev_io *)wl != &pipe_w)
		3656	if (types & EV_IO)
		3657	cb (EV_A_ EV_IO, wl);
		3658
		3659	wl = wn;
		3660	}
		3661
		3662	if (types & (EV_TIMER | EV_STAT))
		3663	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3664	#if EV_STAT_ENABLE
		3665	/*TODO: timer is not always active*/
		3666	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3667	{
		3668	if (types & EV_STAT)
		3669	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3670	}
		3671	else
		3672	#endif
		3673	if (types & EV_TIMER)
		3674	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3675
		3676	#if EV_PERIODIC_ENABLE
		3677	if (types & EV_PERIODIC)
		3678	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3679	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3680	#endif
		3681
		3682	#if EV_IDLE_ENABLE
		3683	if (types & EV_IDLE)
		3684	for (j = NUMPRI; i--; )
		3685	for (i = idlecnt [j]; i--; )
		3686	cb (EV_A_ EV_IDLE, idles [j][i]);
		3687	#endif
		3688
		3689	#if EV_FORK_ENABLE
		3690	if (types & EV_FORK)
		3691	for (i = forkcnt; i--; )
		3692	if (ev_cb (forks [i]) != embed_fork_cb)
		3693	cb (EV_A_ EV_FORK, forks [i]);
		3694	#endif
		3695
		3696	#if EV_ASYNC_ENABLE
		3697	if (types & EV_ASYNC)
		3698	for (i = asynccnt; i--; )
		3699	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3700	#endif
		3701
		3702	if (types & EV_PREPARE)
		3703	for (i = preparecnt; i--; )
		3704	#if EV_EMBED_ENABLE
		3705	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3706	#endif
		3707	cb (EV_A_ EV_PREPARE, prepares [i]);
		3708
		3709	if (types & EV_CHECK)
		3710	for (i = checkcnt; i--; )
		3711	cb (EV_A_ EV_CHECK, checks [i]);
		3712
		3713	if (types & EV_SIGNAL)
		3714	for (i = 0; i < EV_NSIG - 1; ++i)
		3715	for (wl = signals [i].head; wl; )
		3716	{
		3717	wn = wl->next;
		3718	cb (EV_A_ EV_SIGNAL, wl);
		3719	wl = wn;
		3720	}
		3721
		3722	if (types & EV_CHILD)
		3723	for (i = EV_PID_HASHSIZE; i--; )
		3724	for (wl = childs [i]; wl; )
		3725	{
		3726	wn = wl->next;
		3727	cb (EV_A_ EV_CHILD, wl);
		3728	wl = wn;
		3729	}
		3730	/* EV_STAT 0x00001000 /* stat data changed */
		3731	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3732	}
		3733	#endif
		3734
3064	#if EV_MULTIPLICITY	3735	#if EV_MULTIPLICITY
3065	#include "ev_wrap.h"	3736	#include "ev_wrap.h"
3066	#endif	3737	#endif
3067		3738
3068	#ifdef __cplusplus	3739	#ifdef __cplusplus

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