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Comparing libev/ev.c (file contents):
Revision 1.241 by root, Fri May 9 13:57:00 2008 UTC vs.
Revision 1.328 by root, Sun Feb 14 19:23:19 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
129	# endif	151	# endif
130	# endif	152	# endif
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
…		…
154	#ifndef _WIN32	178	#ifndef _WIN32
155	# include <sys/time.h>	179	# include <sys/time.h>
156	# include <sys/wait.h>	180	# include <sys/wait.h>
157	# include <unistd.h>	181	# include <unistd.h>
158	#else	182	#else
		183	# include <io.h>
159	# define WIN32_LEAN_AND_MEAN	184	# define WIN32_LEAN_AND_MEAN
160	# include <windows.h>	185	# include <windows.h>
161	# ifndef EV_SELECT_IS_WINSOCKET	186	# ifndef EV_SELECT_IS_WINSOCKET
162	# define EV_SELECT_IS_WINSOCKET 1	187	# define EV_SELECT_IS_WINSOCKET 1
163	# endif	188	# endif
164	#endif	189	#endif
165		190
166	/* 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 */
167		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
168	#ifndef EV_USE_MONOTONIC	228	#ifndef EV_USE_MONOTONIC
		229	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		230	# define EV_USE_MONOTONIC 1
		231	# else
169	# define EV_USE_MONOTONIC 0	232	# define EV_USE_MONOTONIC 0
		233	# endif
170	#endif	234	#endif
171		235
172	#ifndef EV_USE_REALTIME	236	#ifndef EV_USE_REALTIME
173	# define EV_USE_REALTIME 0	237	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174	#endif	238	#endif
175		239
176	#ifndef EV_USE_NANOSLEEP	240	#ifndef EV_USE_NANOSLEEP
		241	# if _POSIX_C_SOURCE >= 199309L
		242	# define EV_USE_NANOSLEEP 1
		243	# else
177	# define EV_USE_NANOSLEEP 0	244	# define EV_USE_NANOSLEEP 0
		245	# endif
178	#endif	246	#endif
179		247
180	#ifndef EV_USE_SELECT	248	#ifndef EV_USE_SELECT
181	# define EV_USE_SELECT 1	249	# define EV_USE_SELECT 1
182	#endif	250	#endif
…		…
235	# else	303	# else
236	# define EV_USE_EVENTFD 0	304	# define EV_USE_EVENTFD 0
237	# endif	305	# endif
238	#endif	306	#endif
239		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
		316	#if 0 /* debugging */
		317	# define EV_VERIFY 3
		318	# define EV_USE_4HEAP 1
		319	# define EV_HEAP_CACHE_AT 1
		320	#endif
		321
		322	#ifndef EV_VERIFY
		323	# define EV_VERIFY !EV_MINIMAL
		324	#endif
		325
		326	#ifndef EV_USE_4HEAP
		327	# define EV_USE_4HEAP !EV_MINIMAL
		328	#endif
		329
		330	#ifndef EV_HEAP_CACHE_AT
		331	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		332	#endif
		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
240	/* 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
241		355
242	#ifndef CLOCK_MONOTONIC	356	#ifndef CLOCK_MONOTONIC
243	# undef EV_USE_MONOTONIC	357	# undef EV_USE_MONOTONIC
244	# define EV_USE_MONOTONIC 0	358	# define EV_USE_MONOTONIC 0
245	#endif	359	#endif
…		…
259	# include <sys/select.h>	373	# include <sys/select.h>
260	# endif	374	# endif
261	#endif	375	#endif
262		376
263	#if EV_USE_INOTIFY	377	#if EV_USE_INOTIFY
		378	# include <sys/utsname.h>
		379	# include <sys/statfs.h>
264	# include <sys/inotify.h>	380	# include <sys/inotify.h>
		381	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		382	# ifndef IN_DONT_FOLLOW
		383	# undef EV_USE_INOTIFY
		384	# define EV_USE_INOTIFY 0
		385	# endif
265	#endif	386	#endif
266		387
267	#if EV_SELECT_IS_WINSOCKET	388	#if EV_SELECT_IS_WINSOCKET
268	# include <winsock.h>	389	# include <winsock.h>
269	#endif	390	#endif
270		391
271	#if EV_USE_EVENTFD	392	#if EV_USE_EVENTFD
272	/* 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 */
273	# 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
274	# ifdef __cplusplus	405	# ifdef __cplusplus
275	extern "C" {	406	extern "C" {
276	# endif	407	# endif
277	int eventfd (unsigned int initval, int flags);	408	int eventfd (unsigned int initval, int flags);
278	# ifdef __cplusplus	409	# ifdef __cplusplus
279	}	410	}
280	# endif	411	# endif
281	#endif	412	#endif
282		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
		442
283	/**/	443	/**/
		444
		445	#if EV_VERIFY >= 3
		446	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		447	#else
		448	# define EV_FREQUENT_CHECK do { } while (0)
		449	#endif
284		450
285	/*	451	/*
286	* This is used to avoid floating point rounding problems.	452	* This is used to avoid floating point rounding problems.
287	* It is added to ev_rt_now when scheduling periodics	453	* It is added to ev_rt_now when scheduling periodics
288	* to ensure progress, time-wise, even when rounding	454	* to ensure progress, time-wise, even when rounding
…		…
292	*/	458	*/
293	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	459	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
294		460
295	#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) */
296	#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) */
297	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
298		463
299	#if __GNUC__ >= 4	464	#if __GNUC__ >= 4
300	# define expect(expr,value) __builtin_expect ((expr),(value))	465	# define expect(expr,value) __builtin_expect ((expr),(value))
301	# define noinline __attribute__ ((noinline))	466	# define noinline __attribute__ ((noinline))
302	#else	467	#else
…		…
315	# define inline_speed static noinline	480	# define inline_speed static noinline
316	#else	481	#else
317	# define inline_speed static inline	482	# define inline_speed static inline
318	#endif	483	#endif
319		484
320	#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
321	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	490	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		491	#endif
322		492
323	#define EMPTY /* required for microsofts broken pseudo-c compiler */	493	#define EMPTY /* required for microsofts broken pseudo-c compiler */
324	#define EMPTY2(a,b) /* used to suppress some warnings */	494	#define EMPTY2(a,b) /* used to suppress some warnings */
325		495
326	typedef ev_watcher *W;	496	typedef ev_watcher *W;
…		…
328	typedef ev_watcher_time *WT;	498	typedef ev_watcher_time *WT;
329		499
330	#define ev_active(w) ((W)(w))->active	500	#define ev_active(w) ((W)(w))->active
331	#define ev_at(w) ((WT)(w))->at	501	#define ev_at(w) ((WT)(w))->at
332		502
333	#if EV_USE_MONOTONIC	503	#if EV_USE_REALTIME
334	/* 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 */
335	/* 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
336	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)
337	#endif	521	#endif
338		522
339	#ifdef _WIN32	523	#ifdef _WIN32
340	# include "ev_win32.c"	524	# include "ev_win32.c"
341	#endif	525	#endif
…		…
349	{	533	{
350	syserr_cb = cb;	534	syserr_cb = cb;
351	}	535	}
352		536
353	static void noinline	537	static void noinline
354	syserr (const char *msg)	538	ev_syserr (const char *msg)
355	{	539	{
356	if (!msg)	540	if (!msg)
357	msg = "(libev) system error";	541	msg = "(libev) system error";
358		542
359	if (syserr_cb)	543	if (syserr_cb)
…		…
405	#define ev_malloc(size) ev_realloc (0, (size))	589	#define ev_malloc(size) ev_realloc (0, (size))
406	#define ev_free(ptr) ev_realloc ((ptr), 0)	590	#define ev_free(ptr) ev_realloc ((ptr), 0)
407		591
408	/*****************************************************************************/	592	/*****************************************************************************/
409		593
		594	/* set in reify when reification needed */
		595	#define EV_ANFD_REIFY 1
		596
		597	/* file descriptor info structure */
410	typedef struct	598	typedef struct
411	{	599	{
412	WL head;	600	WL head;
413	unsigned char events;	601	unsigned char events; /* the events watched for */
		602	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
		603	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
414	unsigned char reify;	604	unsigned char unused;
		605	#if EV_USE_EPOLL
		606	unsigned int egen; /* generation counter to counter epoll bugs */
		607	#endif
415	#if EV_SELECT_IS_WINSOCKET	608	#if EV_SELECT_IS_WINSOCKET
416	SOCKET handle;	609	SOCKET handle;
417	#endif	610	#endif
418	} ANFD;	611	} ANFD;
419		612
		613	/* stores the pending event set for a given watcher */
420	typedef struct	614	typedef struct
421	{	615	{
422	W w;	616	W w;
423	int events;	617	int events; /* the pending event set for the given watcher */
424	} ANPENDING;	618	} ANPENDING;
425		619
426	#if EV_USE_INOTIFY	620	#if EV_USE_INOTIFY
427	/* hash table entry per inotify-id */	621	/* hash table entry per inotify-id */
428	typedef struct	622	typedef struct
…		…
431	} ANFS;	625	} ANFS;
432	#endif	626	#endif
433		627
434	/* Heap Entry */	628	/* Heap Entry */
435	#if EV_HEAP_CACHE_AT	629	#if EV_HEAP_CACHE_AT
		630	/* a heap element */
436	typedef struct {	631	typedef struct {
		632	ev_tstamp at;
437	WT w;	633	WT w;
438	ev_tstamp at;
439	} ANHE;	634	} ANHE;
440		635
441	#define ANHE_w(he) (he) /* access watcher, read-write */	636	#define ANHE_w(he) (he).w /* access watcher, read-write */
442	#define ANHE_at(he) (he)->at /* acces cahced at, read-only */	637	#define ANHE_at(he) (he).at /* access cached at, read-only */
443	#define ANHE_at_set(he) (he)->at = (he)->w->at /* update at from watcher */	638	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
444	#else	639	#else
		640	/* a heap element */
445	typedef WT ANHE;	641	typedef WT ANHE;
446		642
447	#define ANHE_w(he) (he)	643	#define ANHE_w(he) (he)
448	#define ANHE_at(he) (he)->at	644	#define ANHE_at(he) (he)->at
449	#define ANHE_at_set(he)	645	#define ANHE_at_cache(he)
450	#endif	646	#endif
451		647
452	#if EV_MULTIPLICITY	648	#if EV_MULTIPLICITY
453		649
454	struct ev_loop	650	struct ev_loop
…		…
473		669
474	static int ev_default_loop_ptr;	670	static int ev_default_loop_ptr;
475		671
476	#endif	672	#endif
477		673
		674	#if EV_MINIMAL < 2
		675	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		676	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		677	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		678	#else
		679	# define EV_RELEASE_CB (void)0
		680	# define EV_ACQUIRE_CB (void)0
		681	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		682	#endif
		683
		684	#define EVUNLOOP_RECURSE 0x80
		685
478	/*****************************************************************************/	686	/*****************************************************************************/
479		687
		688	#ifndef EV_HAVE_EV_TIME
480	ev_tstamp	689	ev_tstamp
481	ev_time (void)	690	ev_time (void)
482	{	691	{
483	#if EV_USE_REALTIME	692	#if EV_USE_REALTIME
		693	if (expect_true (have_realtime))
		694	{
484	struct timespec ts;	695	struct timespec ts;
485	clock_gettime (CLOCK_REALTIME, &ts);	696	clock_gettime (CLOCK_REALTIME, &ts);
486	return ts.tv_sec + ts.tv_nsec * 1e-9;	697	return ts.tv_sec + ts.tv_nsec * 1e-9;
487	#else	698	}
		699	#endif
		700
488	struct timeval tv;	701	struct timeval tv;
489	gettimeofday (&tv, 0);	702	gettimeofday (&tv, 0);
490	return tv.tv_sec + tv.tv_usec * 1e-6;	703	return tv.tv_sec + tv.tv_usec * 1e-6;
491	#endif
492	}	704	}
		705	#endif
493		706
494	ev_tstamp inline_size	707	inline_size ev_tstamp
495	get_clock (void)	708	get_clock (void)
496	{	709	{
497	#if EV_USE_MONOTONIC	710	#if EV_USE_MONOTONIC
498	if (expect_true (have_monotonic))	711	if (expect_true (have_monotonic))
499	{	712	{
…		…
532	struct timeval tv;	745	struct timeval tv;
533		746
534	tv.tv_sec = (time_t)delay;	747	tv.tv_sec = (time_t)delay;
535	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	748	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
536		749
		750	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		751	/* something not guaranteed by newer posix versions, but guaranteed */
		752	/* by older ones */
537	select (0, 0, 0, 0, &tv);	753	select (0, 0, 0, 0, &tv);
538	#endif	754	#endif
539	}	755	}
540	}	756	}
541		757
542	/*****************************************************************************/	758	/*****************************************************************************/
543		759
544	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	760	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
545		761
546	int inline_size	762	/* find a suitable new size for the given array, */
		763	/* hopefully by rounding to a ncie-to-malloc size */
		764	inline_size int
547	array_nextsize (int elem, int cur, int cnt)	765	array_nextsize (int elem, int cur, int cnt)
548	{	766	{
549	int ncur = cur + 1;	767	int ncur = cur + 1;
550		768
551	do	769	do
…		…
568	array_realloc (int elem, void *base, int *cur, int cnt)	786	array_realloc (int elem, void *base, int *cur, int cnt)
569	{	787	{
570	*cur = array_nextsize (elem, *cur, cnt);	788	*cur = array_nextsize (elem, *cur, cnt);
571	return ev_realloc (base, elem * *cur);	789	return ev_realloc (base, elem * *cur);
572	}	790	}
		791
		792	#define array_init_zero(base,count) \
		793	memset ((void *)(base), 0, sizeof (*(base)) * (count))
573		794
574	#define array_needsize(type,base,cur,cnt,init) \	795	#define array_needsize(type,base,cur,cnt,init) \
575	if (expect_false ((cnt) > (cur))) \	796	if (expect_false ((cnt) > (cur))) \
576	{ \	797	{ \
577	int ocur_ = (cur); \	798	int ocur_ = (cur); \
…		…
589	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	810	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
590	}	811	}
591	#endif	812	#endif
592		813
593	#define array_free(stem, idx) \	814	#define array_free(stem, idx) \
594	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	815	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
595		816
596	/*****************************************************************************/	817	/*****************************************************************************/
		818
		819	/* dummy callback for pending events */
		820	static void noinline
		821	pendingcb (EV_P_ ev_prepare *w, int revents)
		822	{
		823	}
597		824
598	void noinline	825	void noinline
599	ev_feed_event (EV_P_ void *w, int revents)	826	ev_feed_event (EV_P_ void *w, int revents)
600	{	827	{
601	W w_ = (W)w;	828	W w_ = (W)w;
…		…
610	pendings [pri][w_->pending - 1].w = w_;	837	pendings [pri][w_->pending - 1].w = w_;
611	pendings [pri][w_->pending - 1].events = revents;	838	pendings [pri][w_->pending - 1].events = revents;
612	}	839	}
613	}	840	}
614		841
615	void inline_speed	842	inline_speed void
		843	feed_reverse (EV_P_ W w)
		844	{
		845	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		846	rfeeds [rfeedcnt++] = w;
		847	}
		848
		849	inline_size void
		850	feed_reverse_done (EV_P_ int revents)
		851	{
		852	do
		853	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		854	while (rfeedcnt);
		855	}
		856
		857	inline_speed void
616	queue_events (EV_P_ W *events, int eventcnt, int type)	858	queue_events (EV_P_ W *events, int eventcnt, int type)
617	{	859	{
618	int i;	860	int i;
619		861
620	for (i = 0; i < eventcnt; ++i)	862	for (i = 0; i < eventcnt; ++i)
621	ev_feed_event (EV_A_ events [i], type);	863	ev_feed_event (EV_A_ events [i], type);
622	}	864	}
623		865
624	/*****************************************************************************/	866	/*****************************************************************************/
625		867
626	void inline_size	868	inline_speed void
627	anfds_init (ANFD *base, int count)
628	{
629	while (count--)
630	{
631	base->head = 0;
632	base->events = EV_NONE;
633	base->reify = 0;
634
635	++base;
636	}
637	}
638
639	void inline_speed
640	fd_event (EV_P_ int fd, int revents)	869	fd_event_nc (EV_P_ int fd, int revents)
641	{	870	{
642	ANFD *anfd = anfds + fd;	871	ANFD *anfd = anfds + fd;
643	ev_io *w;	872	ev_io *w;
644		873
645	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	874	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
649	if (ev)	878	if (ev)
650	ev_feed_event (EV_A_ (W)w, ev);	879	ev_feed_event (EV_A_ (W)w, ev);
651	}	880	}
652	}	881	}
653		882
		883	/* do not submit kernel events for fds that have reify set */
		884	/* because that means they changed while we were polling for new events */
		885	inline_speed void
		886	fd_event (EV_P_ int fd, int revents)
		887	{
		888	ANFD *anfd = anfds + fd;
		889
		890	if (expect_true (!anfd->reify))
		891	fd_event_nc (EV_A_ fd, revents);
		892	}
		893
654	void	894	void
655	ev_feed_fd_event (EV_P_ int fd, int revents)	895	ev_feed_fd_event (EV_P_ int fd, int revents)
656	{	896	{
657	if (fd >= 0 && fd < anfdmax)	897	if (fd >= 0 && fd < anfdmax)
658	fd_event (EV_A_ fd, revents);	898	fd_event_nc (EV_A_ fd, revents);
659	}	899	}
660		900
661	void inline_size	901	/* make sure the external fd watch events are in-sync */
		902	/* with the kernel/libev internal state */
		903	inline_size void
662	fd_reify (EV_P)	904	fd_reify (EV_P)
663	{	905	{
664	int i;	906	int i;
665		907
666	for (i = 0; i < fdchangecnt; ++i)	908	for (i = 0; i < fdchangecnt; ++i)
…		…
675	events |= (unsigned char)w->events;	917	events |= (unsigned char)w->events;
676		918
677	#if EV_SELECT_IS_WINSOCKET	919	#if EV_SELECT_IS_WINSOCKET
678	if (events)	920	if (events)
679	{	921	{
680	unsigned long argp;	922	unsigned long arg;
681	#ifdef EV_FD_TO_WIN32_HANDLE
682	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	923	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
683	#else
684	anfd->handle = _get_osfhandle (fd);
685	#endif
686	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	924	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
687	}	925	}
688	#endif	926	#endif
689		927
690	{	928	{
691	unsigned char o_events = anfd->events;	929	unsigned char o_events = anfd->events;
692	unsigned char o_reify = anfd->reify;	930	unsigned char o_reify = anfd->reify;
693		931
694	anfd->reify = 0;	932	anfd->reify = 0;
695	anfd->events = events;	933	anfd->events = events;
696		934
697	if (o_events != events || o_reify & EV_IOFDSET)	935	if (o_events != events || o_reify & EV__IOFDSET)
698	backend_modify (EV_A_ fd, o_events, events);	936	backend_modify (EV_A_ fd, o_events, events);
699	}	937	}
700	}	938	}
701		939
702	fdchangecnt = 0;	940	fdchangecnt = 0;
703	}	941	}
704		942
705	void inline_size	943	/* something about the given fd changed */
		944	inline_size void
706	fd_change (EV_P_ int fd, int flags)	945	fd_change (EV_P_ int fd, int flags)
707	{	946	{
708	unsigned char reify = anfds [fd].reify;	947	unsigned char reify = anfds [fd].reify;
709	anfds [fd].reify |= flags;	948	anfds [fd].reify |= flags;
710		949
…		…
714	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	953	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
715	fdchanges [fdchangecnt - 1] = fd;	954	fdchanges [fdchangecnt - 1] = fd;
716	}	955	}
717	}	956	}
718		957
719	void inline_speed	958	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		959	inline_speed void
720	fd_kill (EV_P_ int fd)	960	fd_kill (EV_P_ int fd)
721	{	961	{
722	ev_io *w;	962	ev_io *w;
723		963
724	while ((w = (ev_io *)anfds [fd].head))	964	while ((w = (ev_io *)anfds [fd].head))
…		…
726	ev_io_stop (EV_A_ w);	966	ev_io_stop (EV_A_ w);
727	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	967	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
728	}	968	}
729	}	969	}
730		970
731	int inline_size	971	/* check whether the given fd is atcually valid, for error recovery */
		972	inline_size int
732	fd_valid (int fd)	973	fd_valid (int fd)
733	{	974	{
734	#ifdef _WIN32	975	#ifdef _WIN32
735	return _get_osfhandle (fd) != -1;	976	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
736	#else	977	#else
737	return fcntl (fd, F_GETFD) != -1;	978	return fcntl (fd, F_GETFD) != -1;
738	#endif	979	#endif
739	}	980	}
740		981
…		…
744	{	985	{
745	int fd;	986	int fd;
746		987
747	for (fd = 0; fd < anfdmax; ++fd)	988	for (fd = 0; fd < anfdmax; ++fd)
748	if (anfds [fd].events)	989	if (anfds [fd].events)
749	if (!fd_valid (fd) == -1 && errno == EBADF)	990	if (!fd_valid (fd) && errno == EBADF)
750	fd_kill (EV_A_ fd);	991	fd_kill (EV_A_ fd);
751	}	992	}
752		993
753	/* called on ENOMEM in select/poll to kill some fds and retry */	994	/* called on ENOMEM in select/poll to kill some fds and retry */
754	static void noinline	995	static void noinline
…		…
758		999
759	for (fd = anfdmax; fd--; )	1000	for (fd = anfdmax; fd--; )
760	if (anfds [fd].events)	1001	if (anfds [fd].events)
761	{	1002	{
762	fd_kill (EV_A_ fd);	1003	fd_kill (EV_A_ fd);
763	return;	1004	break;
764	}	1005	}
765	}	1006	}
766		1007
767	/* usually called after fork if backend needs to re-arm all fds from scratch */	1008	/* usually called after fork if backend needs to re-arm all fds from scratch */
768	static void noinline	1009	static void noinline
…		…
772		1013
773	for (fd = 0; fd < anfdmax; ++fd)	1014	for (fd = 0; fd < anfdmax; ++fd)
774	if (anfds [fd].events)	1015	if (anfds [fd].events)
775	{	1016	{
776	anfds [fd].events = 0;	1017	anfds [fd].events = 0;
		1018	anfds [fd].emask = 0;
777	fd_change (EV_A_ fd, EV_IOFDSET | 1);	1019	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
778	}	1020	}
779	}	1021	}
780		1022
781	/*****************************************************************************/	1023	/*****************************************************************************/
782		1024
…		…
790	* at the moment we allow libev the luxury of two heaps,	1032	* at the moment we allow libev the luxury of two heaps,
791	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap	1033	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
792	* which is more cache-efficient.	1034	* which is more cache-efficient.
793	* the difference is about 5% with 50000+ watchers.	1035	* the difference is about 5% with 50000+ watchers.
794	*/	1036	*/
795	#define EV_USE_4HEAP !EV_MINIMAL
796	#if EV_USE_4HEAP	1037	#if EV_USE_4HEAP
797		1038
798	#define DHEAP 4	1039	#define DHEAP 4
799	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	1040	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
800		1041	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
801	/* towards the root */	1042	#define UPHEAP_DONE(p,k) ((p) == (k))
802	void inline_speed
803	upheap (ANHE *heap, int k)
804	{
805	ANHE he = heap [k];
806
807	for (;;)
808	{
809	int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
810
811	if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
812	break;
813
814	heap [k] = heap [p];
815	ev_active (ANHE_w (heap [k])) = k;
816	k = p;
817	}
818
819	ev_active (ANHE_w (he)) = k;
820	heap [k] = he;
821	}
822		1043
823	/* away from the root */	1044	/* away from the root */
824	void inline_speed	1045	inline_speed void
825	downheap (ANHE *heap, int N, int k)	1046	downheap (ANHE *heap, int N, int k)
826	{	1047	{
827	ANHE he = heap [k];	1048	ANHE he = heap [k];
828	ANHE *E = heap + N + HEAP0;	1049	ANHE *E = heap + N + HEAP0;
829		1050
830	for (;;)	1051	for (;;)
831	{	1052	{
832	ev_tstamp minat;	1053	ev_tstamp minat;
833	ANHE *minpos;	1054	ANHE *minpos;
834	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0;	1055	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
835		1056
836	// find minimum child	1057	/* find minimum child */
837	if (expect_true (pos + DHEAP - 1 < E))	1058	if (expect_true (pos + DHEAP - 1 < E))
838	{	1059	{
839	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));	1060	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
840	if (ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));	1061	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
841	if (ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));	1062	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
842	if (ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));	1063	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
843	}	1064	}
844	else if (pos < E)	1065	else if (pos < E)
845	{	1066	{
846	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));	1067	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
847	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));	1068	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
…		…
852	break;	1073	break;
853		1074
854	if (ANHE_at (he) <= minat)	1075	if (ANHE_at (he) <= minat)
855	break;	1076	break;
856		1077
		1078	heap [k] = *minpos;
857	ev_active (ANHE_w (*minpos)) = k;	1079	ev_active (ANHE_w (*minpos)) = k;
858	heap [k] = *minpos;
859		1080
860	k = minpos - heap;	1081	k = minpos - heap;
861	}	1082	}
862		1083
		1084	heap [k] = he;
863	ev_active (ANHE_w (he)) = k;	1085	ev_active (ANHE_w (he)) = k;
864	heap [k] = he;
865	}	1086	}
866		1087
867	#else // 4HEAP	1088	#else /* 4HEAP */
868		1089
869	#define HEAP0 1	1090	#define HEAP0 1
		1091	#define HPARENT(k) ((k) >> 1)
		1092	#define UPHEAP_DONE(p,k) (!(p))
870		1093
871	/* towards the root */	1094	/* away from the root */
872	void inline_speed	1095	inline_speed void
873	upheap (ANHE *heap, int k)	1096	downheap (ANHE *heap, int N, int k)
874	{	1097	{
875	ANHE he = heap [k];	1098	ANHE he = heap [k];
876		1099
877	for (;;)	1100	for (;;)
878	{	1101	{
879	int p = k >> 1;	1102	int c = k << 1;
880		1103
881	/* maybe we could use a dummy element at heap [0]? */	1104	if (c >= N + HEAP0)
882	if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
883	break;	1105	break;
884		1106
885	heap [k] = heap [p];
886	ev_active (ANHE_w (heap [k])) = k;
887	k = p;
888	}
889
890	heap [k] = w;
891	ev_active (ANHE_w (heap [k])) = k;
892	}
893
894	/* away from the root */
895	void inline_speed
896	downheap (ANHE *heap, int N, int k)
897	{
898	ANHE he = heap [k];
899
900	for (;;)
901	{
902	int c = k << 1;
903
904	if (c > N)
905	break;
906
907	c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1107	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
908	? 1 : 0;	1108	? 1 : 0;
909		1109
910	if (w->at <= ANHE_at (heap [c]))	1110	if (ANHE_at (he) <= ANHE_at (heap [c]))
911	break;	1111	break;
912		1112
913	heap [k] = heap [c];	1113	heap [k] = heap [c];
914	ev_active (ANHE_w (heap [k])) = k;	1114	ev_active (ANHE_w (heap [k])) = k;
915		1115
…		…
919	heap [k] = he;	1119	heap [k] = he;
920	ev_active (ANHE_w (he)) = k;	1120	ev_active (ANHE_w (he)) = k;
921	}	1121	}
922	#endif	1122	#endif
923		1123
924	void inline_size	1124	/* towards the root */
		1125	inline_speed void
		1126	upheap (ANHE *heap, int k)
		1127	{
		1128	ANHE he = heap [k];
		1129
		1130	for (;;)
		1131	{
		1132	int p = HPARENT (k);
		1133
		1134	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1135	break;
		1136
		1137	heap [k] = heap [p];
		1138	ev_active (ANHE_w (heap [k])) = k;
		1139	k = p;
		1140	}
		1141
		1142	heap [k] = he;
		1143	ev_active (ANHE_w (he)) = k;
		1144	}
		1145
		1146	/* move an element suitably so it is in a correct place */
		1147	inline_size void
925	adjustheap (ANHE *heap, int N, int k)	1148	adjustheap (ANHE *heap, int N, int k)
926	{	1149	{
		1150	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
927	upheap (heap, k);	1151	upheap (heap, k);
		1152	else
928	downheap (heap, N, k);	1153	downheap (heap, N, k);
		1154	}
		1155
		1156	/* rebuild the heap: this function is used only once and executed rarely */
		1157	inline_size void
		1158	reheap (ANHE *heap, int N)
		1159	{
		1160	int i;
		1161
		1162	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1163	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1164	for (i = 0; i < N; ++i)
		1165	upheap (heap, i + HEAP0);
929	}	1166	}
930		1167
931	/*****************************************************************************/	1168	/*****************************************************************************/
932		1169
		1170	/* associate signal watchers to a signal signal */
933	typedef struct	1171	typedef struct
934	{	1172	{
		1173	EV_ATOMIC_T pending;
		1174	#if EV_MULTIPLICITY
		1175	EV_P;
		1176	#endif
935	WL head;	1177	WL head;
936	EV_ATOMIC_T gotsig;
937	} ANSIG;	1178	} ANSIG;
938		1179
939	static ANSIG *signals;	1180	static ANSIG signals [EV_NSIG - 1];
940	static int signalmax;
941
942	static EV_ATOMIC_T gotsig;
943
944	void inline_size
945	signals_init (ANSIG *base, int count)
946	{
947	while (count--)
948	{
949	base->head = 0;
950	base->gotsig = 0;
951
952	++base;
953	}
954	}
955		1181
956	/*****************************************************************************/	1182	/*****************************************************************************/
957		1183
958	void inline_speed	1184	/* used to prepare libev internal fd's */
		1185	/* this is not fork-safe */
		1186	inline_speed void
959	fd_intern (int fd)	1187	fd_intern (int fd)
960	{	1188	{
961	#ifdef _WIN32	1189	#ifdef _WIN32
962	int arg = 1;	1190	unsigned long arg = 1;
963	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1191	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
964	#else	1192	#else
965	fcntl (fd, F_SETFD, FD_CLOEXEC);	1193	fcntl (fd, F_SETFD, FD_CLOEXEC);
966	fcntl (fd, F_SETFL, O_NONBLOCK);	1194	fcntl (fd, F_SETFL, O_NONBLOCK);
967	#endif	1195	#endif
968	}	1196	}
969		1197
970	static void noinline	1198	static void noinline
971	evpipe_init (EV_P)	1199	evpipe_init (EV_P)
972	{	1200	{
973	if (!ev_is_active (&pipeev))	1201	if (!ev_is_active (&pipe_w))
974	{	1202	{
975	#if EV_USE_EVENTFD	1203	#if EV_USE_EVENTFD
		1204	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1205	if (evfd < 0 && errno == EINVAL)
976	if ((evfd = eventfd (0, 0)) >= 0)	1206	evfd = eventfd (0, 0);
		1207
		1208	if (evfd >= 0)
977	{	1209	{
978	evpipe [0] = -1;	1210	evpipe [0] = -1;
979	fd_intern (evfd);	1211	fd_intern (evfd); /* doing it twice doesn't hurt */
980	ev_io_set (&pipeev, evfd, EV_READ);	1212	ev_io_set (&pipe_w, evfd, EV_READ);
981	}	1213	}
982	else	1214	else
983	#endif	1215	#endif
984	{	1216	{
985	while (pipe (evpipe))	1217	while (pipe (evpipe))
986	syserr ("(libev) error creating signal/async pipe");	1218	ev_syserr ("(libev) error creating signal/async pipe");
987		1219
988	fd_intern (evpipe [0]);	1220	fd_intern (evpipe [0]);
989	fd_intern (evpipe [1]);	1221	fd_intern (evpipe [1]);
990	ev_io_set (&pipeev, evpipe [0], EV_READ);	1222	ev_io_set (&pipe_w, evpipe [0], EV_READ);
991	}	1223	}
992		1224
993	ev_io_start (EV_A_ &pipeev);	1225	ev_io_start (EV_A_ &pipe_w);
994	ev_unref (EV_A); /* watcher should not keep loop alive */	1226	ev_unref (EV_A); /* watcher should not keep loop alive */
995	}	1227	}
996	}	1228	}
997		1229
998	void inline_size	1230	inline_size void
999	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1231	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1000	{	1232	{
1001	if (!*flag)	1233	if (!*flag)
1002	{	1234	{
1003	int old_errno = errno; /* save errno because write might clobber it */	1235	int old_errno = errno; /* save errno because write might clobber it */
…		…
1016		1248
1017	errno = old_errno;	1249	errno = old_errno;
1018	}	1250	}
1019	}	1251	}
1020		1252
		1253	/* called whenever the libev signal pipe */
		1254	/* got some events (signal, async) */
1021	static void	1255	static void
1022	pipecb (EV_P_ ev_io *iow, int revents)	1256	pipecb (EV_P_ ev_io *iow, int revents)
1023	{	1257	{
		1258	int i;
		1259
1024	#if EV_USE_EVENTFD	1260	#if EV_USE_EVENTFD
1025	if (evfd >= 0)	1261	if (evfd >= 0)
1026	{	1262	{
1027	uint64_t counter;	1263	uint64_t counter;
1028	read (evfd, &counter, sizeof (uint64_t));	1264	read (evfd, &counter, sizeof (uint64_t));
…		…
1032	{	1268	{
1033	char dummy;	1269	char dummy;
1034	read (evpipe [0], &dummy, 1);	1270	read (evpipe [0], &dummy, 1);
1035	}	1271	}
1036		1272
1037	if (gotsig && ev_is_default_loop (EV_A))	1273	if (sig_pending)
1038	{	1274	{
1039	int signum;	1275	sig_pending = 0;
1040	gotsig = 0;
1041		1276
1042	for (signum = signalmax; signum--; )	1277	for (i = EV_NSIG - 1; i--; )
1043	if (signals [signum].gotsig)	1278	if (expect_false (signals [i].pending))
1044	ev_feed_signal_event (EV_A_ signum + 1);	1279	ev_feed_signal_event (EV_A_ i + 1);
1045	}	1280	}
1046		1281
1047	#if EV_ASYNC_ENABLE	1282	#if EV_ASYNC_ENABLE
1048	if (gotasync)	1283	if (async_pending)
1049	{	1284	{
1050	int i;	1285	async_pending = 0;
1051	gotasync = 0;
1052		1286
1053	for (i = asynccnt; i--; )	1287	for (i = asynccnt; i--; )
1054	if (asyncs [i]->sent)	1288	if (asyncs [i]->sent)
1055	{	1289	{
1056	asyncs [i]->sent = 0;	1290	asyncs [i]->sent = 0;
…		…
1064		1298
1065	static void	1299	static void
1066	ev_sighandler (int signum)	1300	ev_sighandler (int signum)
1067	{	1301	{
1068	#if EV_MULTIPLICITY	1302	#if EV_MULTIPLICITY
1069	struct ev_loop *loop = &default_loop_struct;	1303	EV_P = signals [signum - 1].loop;
1070	#endif	1304	#endif
1071		1305
1072	#if _WIN32	1306	#ifdef _WIN32
1073	signal (signum, ev_sighandler);	1307	signal (signum, ev_sighandler);
1074	#endif	1308	#endif
1075		1309
1076	signals [signum - 1].gotsig = 1;	1310	signals [signum - 1].pending = 1;
1077	evpipe_write (EV_A_ &gotsig);	1311	evpipe_write (EV_A_ &sig_pending);
1078	}	1312	}
1079		1313
1080	void noinline	1314	void noinline
1081	ev_feed_signal_event (EV_P_ int signum)	1315	ev_feed_signal_event (EV_P_ int signum)
1082	{	1316	{
1083	WL w;	1317	WL w;
1084		1318
		1319	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1320	return;
		1321
		1322	--signum;
		1323
1085	#if EV_MULTIPLICITY	1324	#if EV_MULTIPLICITY
1086	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1325	/* it is permissible to try to feed a signal to the wrong loop */
1087	#endif	1326	/* or, likely more useful, feeding a signal nobody is waiting for */
1088		1327
1089	--signum;	1328	if (expect_false (signals [signum].loop != EV_A))
1090
1091	if (signum < 0 || signum >= signalmax)
1092	return;	1329	return;
		1330	#endif
1093		1331
1094	signals [signum].gotsig = 0;	1332	signals [signum].pending = 0;
1095		1333
1096	for (w = signals [signum].head; w; w = w->next)	1334	for (w = signals [signum].head; w; w = w->next)
1097	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1335	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1098	}	1336	}
1099		1337
		1338	#if EV_USE_SIGNALFD
		1339	static void
		1340	sigfdcb (EV_P_ ev_io *iow, int revents)
		1341	{
		1342	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1343
		1344	for (;;)
		1345	{
		1346	ssize_t res = read (sigfd, si, sizeof (si));
		1347
		1348	/* not ISO-C, as res might be -1, but works with SuS */
		1349	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1350	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1351
		1352	if (res < (ssize_t)sizeof (si))
		1353	break;
		1354	}
		1355	}
		1356	#endif
		1357
1100	/*****************************************************************************/	1358	/*****************************************************************************/
1101		1359
1102	static WL childs [EV_PID_HASHSIZE];	1360	static WL childs [EV_PID_HASHSIZE];
1103		1361
1104	#ifndef _WIN32	1362	#ifndef _WIN32
…		…
1107		1365
1108	#ifndef WIFCONTINUED	1366	#ifndef WIFCONTINUED
1109	# define WIFCONTINUED(status) 0	1367	# define WIFCONTINUED(status) 0
1110	#endif	1368	#endif
1111		1369
1112	void inline_speed	1370	/* handle a single child status event */
		1371	inline_speed void
1113	child_reap (EV_P_ int chain, int pid, int status)	1372	child_reap (EV_P_ int chain, int pid, int status)
1114	{	1373	{
1115	ev_child *w;	1374	ev_child *w;
1116	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1375	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1117		1376
…		…
1130		1389
1131	#ifndef WCONTINUED	1390	#ifndef WCONTINUED
1132	# define WCONTINUED 0	1391	# define WCONTINUED 0
1133	#endif	1392	#endif
1134		1393
		1394	/* called on sigchld etc., calls waitpid */
1135	static void	1395	static void
1136	childcb (EV_P_ ev_signal *sw, int revents)	1396	childcb (EV_P_ ev_signal *sw, int revents)
1137	{	1397	{
1138	int pid, status;	1398	int pid, status;
1139		1399
…		…
1220	/* kqueue is borked on everything but netbsd apparently */	1480	/* kqueue is borked on everything but netbsd apparently */
1221	/* it usually doesn't work correctly on anything but sockets and pipes */	1481	/* it usually doesn't work correctly on anything but sockets and pipes */
1222	flags &= ~EVBACKEND_KQUEUE;	1482	flags &= ~EVBACKEND_KQUEUE;
1223	#endif	1483	#endif
1224	#ifdef __APPLE__	1484	#ifdef __APPLE__
1225	// flags &= ~EVBACKEND_KQUEUE; for documentation	1485	/* only select works correctly on that "unix-certified" platform */
1226	flags &= ~EVBACKEND_POLL;	1486	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1487	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1227	#endif	1488	#endif
1228		1489
1229	return flags;	1490	return flags;
1230	}	1491	}
1231		1492
…		…
1245	ev_backend (EV_P)	1506	ev_backend (EV_P)
1246	{	1507	{
1247	return backend;	1508	return backend;
1248	}	1509	}
1249		1510
		1511	#if EV_MINIMAL < 2
1250	unsigned int	1512	unsigned int
1251	ev_loop_count (EV_P)	1513	ev_loop_count (EV_P)
1252	{	1514	{
1253	return loop_count;	1515	return loop_count;
1254	}	1516	}
1255		1517
		1518	unsigned int
		1519	ev_loop_depth (EV_P)
		1520	{
		1521	return loop_depth;
		1522	}
		1523
1256	void	1524	void
1257	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1525	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1258	{	1526	{
1259	io_blocktime = interval;	1527	io_blocktime = interval;
1260	}	1528	}
…		…
1263	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1531	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1264	{	1532	{
1265	timeout_blocktime = interval;	1533	timeout_blocktime = interval;
1266	}	1534	}
1267		1535
		1536	void
		1537	ev_set_userdata (EV_P_ void *data)
		1538	{
		1539	userdata = data;
		1540	}
		1541
		1542	void *
		1543	ev_userdata (EV_P)
		1544	{
		1545	return userdata;
		1546	}
		1547
		1548	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1549	{
		1550	invoke_cb = invoke_pending_cb;
		1551	}
		1552
		1553	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1554	{
		1555	release_cb = release;
		1556	acquire_cb = acquire;
		1557	}
		1558	#endif
		1559
		1560	/* initialise a loop structure, must be zero-initialised */
1268	static void noinline	1561	static void noinline
1269	loop_init (EV_P_ unsigned int flags)	1562	loop_init (EV_P_ unsigned int flags)
1270	{	1563	{
1271	if (!backend)	1564	if (!backend)
1272	{	1565	{
		1566	#if EV_USE_REALTIME
		1567	if (!have_realtime)
		1568	{
		1569	struct timespec ts;
		1570
		1571	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1572	have_realtime = 1;
		1573	}
		1574	#endif
		1575
1273	#if EV_USE_MONOTONIC	1576	#if EV_USE_MONOTONIC
		1577	if (!have_monotonic)
1274	{	1578	{
1275	struct timespec ts;	1579	struct timespec ts;
		1580
1276	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1581	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1277	have_monotonic = 1;	1582	have_monotonic = 1;
1278	}	1583	}
1279	#endif	1584	#endif
		1585
		1586	/* pid check not overridable via env */
		1587	#ifndef _WIN32
		1588	if (flags & EVFLAG_FORKCHECK)
		1589	curpid = getpid ();
		1590	#endif
		1591
		1592	if (!(flags & EVFLAG_NOENV)
		1593	&& !enable_secure ()
		1594	&& getenv ("LIBEV_FLAGS"))
		1595	flags = atoi (getenv ("LIBEV_FLAGS"));
1280		1596
1281	ev_rt_now = ev_time ();	1597	ev_rt_now = ev_time ();
1282	mn_now = get_clock ();	1598	mn_now = get_clock ();
1283	now_floor = mn_now;	1599	now_floor = mn_now;
1284	rtmn_diff = ev_rt_now - mn_now;	1600	rtmn_diff = ev_rt_now - mn_now;
		1601	#if EV_MINIMAL < 2
		1602	invoke_cb = ev_invoke_pending;
		1603	#endif
1285		1604
1286	io_blocktime = 0.;	1605	io_blocktime = 0.;
1287	timeout_blocktime = 0.;	1606	timeout_blocktime = 0.;
1288	backend = 0;	1607	backend = 0;
1289	backend_fd = -1;	1608	backend_fd = -1;
1290	gotasync = 0;	1609	sig_pending = 0;
		1610	#if EV_ASYNC_ENABLE
		1611	async_pending = 0;
		1612	#endif
1291	#if EV_USE_INOTIFY	1613	#if EV_USE_INOTIFY
1292	fs_fd = -2;	1614	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1293	#endif	1615	#endif
1294		1616	#if EV_USE_SIGNALFD
1295	/* pid check not overridable via env */	1617	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1296	#ifndef _WIN32
1297	if (flags & EVFLAG_FORKCHECK)
1298	curpid = getpid ();
1299	#endif	1618	#endif
1300
1301	if (!(flags & EVFLAG_NOENV)
1302	&& !enable_secure ()
1303	&& getenv ("LIBEV_FLAGS"))
1304	flags = atoi (getenv ("LIBEV_FLAGS"));
1305		1619
1306	if (!(flags & 0x0000ffffU))	1620	if (!(flags & 0x0000ffffU))
1307	flags |= ev_recommended_backends ();	1621	flags |= ev_recommended_backends ();
1308		1622
1309	#if EV_USE_PORT	1623	#if EV_USE_PORT
…		…
1320	#endif	1634	#endif
1321	#if EV_USE_SELECT	1635	#if EV_USE_SELECT
1322	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1636	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1323	#endif	1637	#endif
1324		1638
		1639	ev_prepare_init (&pending_w, pendingcb);
		1640
1325	ev_init (&pipeev, pipecb);	1641	ev_init (&pipe_w, pipecb);
1326	ev_set_priority (&pipeev, EV_MAXPRI);	1642	ev_set_priority (&pipe_w, EV_MAXPRI);
1327	}	1643	}
1328	}	1644	}
1329		1645
		1646	/* free up a loop structure */
1330	static void noinline	1647	static void noinline
1331	loop_destroy (EV_P)	1648	loop_destroy (EV_P)
1332	{	1649	{
1333	int i;	1650	int i;
1334		1651
1335	if (ev_is_active (&pipeev))	1652	if (ev_is_active (&pipe_w))
1336	{	1653	{
1337	ev_ref (EV_A); /* signal watcher */	1654	/*ev_ref (EV_A);*/
1338	ev_io_stop (EV_A_ &pipeev);	1655	/*ev_io_stop (EV_A_ &pipe_w);*/
1339		1656
1340	#if EV_USE_EVENTFD	1657	#if EV_USE_EVENTFD
1341	if (evfd >= 0)	1658	if (evfd >= 0)
1342	close (evfd);	1659	close (evfd);
1343	#endif	1660	#endif
1344		1661
1345	if (evpipe [0] >= 0)	1662	if (evpipe [0] >= 0)
1346	{	1663	{
1347	close (evpipe [0]);	1664	EV_WIN32_CLOSE_FD (evpipe [0]);
1348	close (evpipe [1]);	1665	EV_WIN32_CLOSE_FD (evpipe [1]);
1349	}	1666	}
1350	}	1667	}
		1668
		1669	#if EV_USE_SIGNALFD
		1670	if (ev_is_active (&sigfd_w))
		1671	close (sigfd);
		1672	#endif
1351		1673
1352	#if EV_USE_INOTIFY	1674	#if EV_USE_INOTIFY
1353	if (fs_fd >= 0)	1675	if (fs_fd >= 0)
1354	close (fs_fd);	1676	close (fs_fd);
1355	#endif	1677	#endif
…		…
1379	#if EV_IDLE_ENABLE	1701	#if EV_IDLE_ENABLE
1380	array_free (idle, [i]);	1702	array_free (idle, [i]);
1381	#endif	1703	#endif
1382	}	1704	}
1383		1705
1384	ev_free (anfds); anfdmax = 0;	1706	ev_free (anfds); anfds = 0; anfdmax = 0;
1385		1707
1386	/* have to use the microsoft-never-gets-it-right macro */	1708	/* have to use the microsoft-never-gets-it-right macro */
		1709	array_free (rfeed, EMPTY);
1387	array_free (fdchange, EMPTY);	1710	array_free (fdchange, EMPTY);
1388	array_free (timer, EMPTY);	1711	array_free (timer, EMPTY);
1389	#if EV_PERIODIC_ENABLE	1712	#if EV_PERIODIC_ENABLE
1390	array_free (periodic, EMPTY);	1713	array_free (periodic, EMPTY);
1391	#endif	1714	#endif
…		…
1400		1723
1401	backend = 0;	1724	backend = 0;
1402	}	1725	}
1403		1726
1404	#if EV_USE_INOTIFY	1727	#if EV_USE_INOTIFY
1405	void inline_size infy_fork (EV_P);	1728	inline_size void infy_fork (EV_P);
1406	#endif	1729	#endif
1407		1730
1408	void inline_size	1731	inline_size void
1409	loop_fork (EV_P)	1732	loop_fork (EV_P)
1410	{	1733	{
1411	#if EV_USE_PORT	1734	#if EV_USE_PORT
1412	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1735	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1413	#endif	1736	#endif
…		…
1419	#endif	1742	#endif
1420	#if EV_USE_INOTIFY	1743	#if EV_USE_INOTIFY
1421	infy_fork (EV_A);	1744	infy_fork (EV_A);
1422	#endif	1745	#endif
1423		1746
1424	if (ev_is_active (&pipeev))	1747	if (ev_is_active (&pipe_w))
1425	{	1748	{
1426	/* this "locks" the handlers against writing to the pipe */	1749	/* this "locks" the handlers against writing to the pipe */
1427	/* while we modify the fd vars */	1750	/* while we modify the fd vars */
1428	gotsig = 1;	1751	sig_pending = 1;
1429	#if EV_ASYNC_ENABLE	1752	#if EV_ASYNC_ENABLE
1430	gotasync = 1;	1753	async_pending = 1;
1431	#endif	1754	#endif
1432		1755
1433	ev_ref (EV_A);	1756	ev_ref (EV_A);
1434	ev_io_stop (EV_A_ &pipeev);	1757	ev_io_stop (EV_A_ &pipe_w);
1435		1758
1436	#if EV_USE_EVENTFD	1759	#if EV_USE_EVENTFD
1437	if (evfd >= 0)	1760	if (evfd >= 0)
1438	close (evfd);	1761	close (evfd);
1439	#endif	1762	#endif
1440		1763
1441	if (evpipe [0] >= 0)	1764	if (evpipe [0] >= 0)
1442	{	1765	{
1443	close (evpipe [0]);	1766	EV_WIN32_CLOSE_FD (evpipe [0]);
1444	close (evpipe [1]);	1767	EV_WIN32_CLOSE_FD (evpipe [1]);
1445	}	1768	}
1446		1769
1447	evpipe_init (EV_A);	1770	evpipe_init (EV_A);
1448	/* now iterate over everything, in case we missed something */	1771	/* now iterate over everything, in case we missed something */
1449	pipecb (EV_A_ &pipeev, EV_READ);	1772	pipecb (EV_A_ &pipe_w, EV_READ);
1450	}	1773	}
1451		1774
1452	postfork = 0;	1775	postfork = 0;
1453	}	1776	}
1454		1777
1455	#if EV_MULTIPLICITY	1778	#if EV_MULTIPLICITY
		1779
1456	struct ev_loop *	1780	struct ev_loop *
1457	ev_loop_new (unsigned int flags)	1781	ev_loop_new (unsigned int flags)
1458	{	1782	{
1459	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1783	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1460		1784
1461	memset (loop, 0, sizeof (struct ev_loop));	1785	memset (EV_A, 0, sizeof (struct ev_loop));
1462
1463	loop_init (EV_A_ flags);	1786	loop_init (EV_A_ flags);
1464		1787
1465	if (ev_backend (EV_A))	1788	if (ev_backend (EV_A))
1466	return loop;	1789	return EV_A;
1467		1790
1468	return 0;	1791	return 0;
1469	}	1792	}
1470		1793
1471	void	1794	void
…		…
1477		1800
1478	void	1801	void
1479	ev_loop_fork (EV_P)	1802	ev_loop_fork (EV_P)
1480	{	1803	{
1481	postfork = 1; /* must be in line with ev_default_fork */	1804	postfork = 1; /* must be in line with ev_default_fork */
		1805	}
		1806	#endif /* multiplicity */
		1807
		1808	#if EV_VERIFY
		1809	static void noinline
		1810	verify_watcher (EV_P_ W w)
		1811	{
		1812	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1813
		1814	if (w->pending)
		1815	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1816	}
		1817
		1818	static void noinline
		1819	verify_heap (EV_P_ ANHE *heap, int N)
		1820	{
		1821	int i;
		1822
		1823	for (i = HEAP0; i < N + HEAP0; ++i)
		1824	{
		1825	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1826	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1827	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1828
		1829	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1830	}
		1831	}
		1832
		1833	static void noinline
		1834	array_verify (EV_P_ W *ws, int cnt)
		1835	{
		1836	while (cnt--)
		1837	{
		1838	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1839	verify_watcher (EV_A_ ws [cnt]);
		1840	}
		1841	}
		1842	#endif
		1843
		1844	#if EV_MINIMAL < 2
		1845	void
		1846	ev_loop_verify (EV_P)
		1847	{
		1848	#if EV_VERIFY
		1849	int i;
		1850	WL w;
		1851
		1852	assert (activecnt >= -1);
		1853
		1854	assert (fdchangemax >= fdchangecnt);
		1855	for (i = 0; i < fdchangecnt; ++i)
		1856	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1857
		1858	assert (anfdmax >= 0);
		1859	for (i = 0; i < anfdmax; ++i)
		1860	for (w = anfds [i].head; w; w = w->next)
		1861	{
		1862	verify_watcher (EV_A_ (W)w);
		1863	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1864	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1865	}
		1866
		1867	assert (timermax >= timercnt);
		1868	verify_heap (EV_A_ timers, timercnt);
		1869
		1870	#if EV_PERIODIC_ENABLE
		1871	assert (periodicmax >= periodiccnt);
		1872	verify_heap (EV_A_ periodics, periodiccnt);
		1873	#endif
		1874
		1875	for (i = NUMPRI; i--; )
		1876	{
		1877	assert (pendingmax [i] >= pendingcnt [i]);
		1878	#if EV_IDLE_ENABLE
		1879	assert (idleall >= 0);
		1880	assert (idlemax [i] >= idlecnt [i]);
		1881	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1882	#endif
		1883	}
		1884
		1885	#if EV_FORK_ENABLE
		1886	assert (forkmax >= forkcnt);
		1887	array_verify (EV_A_ (W *)forks, forkcnt);
		1888	#endif
		1889
		1890	#if EV_ASYNC_ENABLE
		1891	assert (asyncmax >= asynccnt);
		1892	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1893	#endif
		1894
		1895	assert (preparemax >= preparecnt);
		1896	array_verify (EV_A_ (W *)prepares, preparecnt);
		1897
		1898	assert (checkmax >= checkcnt);
		1899	array_verify (EV_A_ (W *)checks, checkcnt);
		1900
		1901	# if 0
		1902	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1903	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		1904	# endif
		1905	#endif
1482	}	1906	}
1483	#endif	1907	#endif
1484		1908
1485	#if EV_MULTIPLICITY	1909	#if EV_MULTIPLICITY
1486	struct ev_loop *	1910	struct ev_loop *
…		…
1491	#endif	1915	#endif
1492	{	1916	{
1493	if (!ev_default_loop_ptr)	1917	if (!ev_default_loop_ptr)
1494	{	1918	{
1495	#if EV_MULTIPLICITY	1919	#if EV_MULTIPLICITY
1496	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1920	EV_P = ev_default_loop_ptr = &default_loop_struct;
1497	#else	1921	#else
1498	ev_default_loop_ptr = 1;	1922	ev_default_loop_ptr = 1;
1499	#endif	1923	#endif
1500		1924
1501	loop_init (EV_A_ flags);	1925	loop_init (EV_A_ flags);
…		…
1518		1942
1519	void	1943	void
1520	ev_default_destroy (void)	1944	ev_default_destroy (void)
1521	{	1945	{
1522	#if EV_MULTIPLICITY	1946	#if EV_MULTIPLICITY
1523	struct ev_loop *loop = ev_default_loop_ptr;	1947	EV_P = ev_default_loop_ptr;
1524	#endif	1948	#endif
		1949
		1950	ev_default_loop_ptr = 0;
1525		1951
1526	#ifndef _WIN32	1952	#ifndef _WIN32
1527	ev_ref (EV_A); /* child watcher */	1953	ev_ref (EV_A); /* child watcher */
1528	ev_signal_stop (EV_A_ &childev);	1954	ev_signal_stop (EV_A_ &childev);
1529	#endif	1955	#endif
…		…
1533		1959
1534	void	1960	void
1535	ev_default_fork (void)	1961	ev_default_fork (void)
1536	{	1962	{
1537	#if EV_MULTIPLICITY	1963	#if EV_MULTIPLICITY
1538	struct ev_loop *loop = ev_default_loop_ptr;	1964	EV_P = ev_default_loop_ptr;
1539	#endif	1965	#endif
1540		1966
1541	if (backend)
1542	postfork = 1; /* must be in line with ev_loop_fork */	1967	postfork = 1; /* must be in line with ev_loop_fork */
1543	}	1968	}
1544		1969
1545	/*****************************************************************************/	1970	/*****************************************************************************/
1546		1971
1547	void	1972	void
1548	ev_invoke (EV_P_ void *w, int revents)	1973	ev_invoke (EV_P_ void *w, int revents)
1549	{	1974	{
1550	EV_CB_INVOKE ((W)w, revents);	1975	EV_CB_INVOKE ((W)w, revents);
1551	}	1976	}
1552		1977
1553	void inline_speed	1978	unsigned int
1554	call_pending (EV_P)	1979	ev_pending_count (EV_P)
		1980	{
		1981	int pri;
		1982	unsigned int count = 0;
		1983
		1984	for (pri = NUMPRI; pri--; )
		1985	count += pendingcnt [pri];
		1986
		1987	return count;
		1988	}
		1989
		1990	void noinline
		1991	ev_invoke_pending (EV_P)
1555	{	1992	{
1556	int pri;	1993	int pri;
1557		1994
1558	for (pri = NUMPRI; pri--; )	1995	for (pri = NUMPRI; pri--; )
1559	while (pendingcnt [pri])	1996	while (pendingcnt [pri])
1560	{	1997	{
1561	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1998	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1562		1999
1563	if (expect_true (p->w))
1564	{
1565	/*assert (("non-pending watcher on pending list", p->w->pending));*/	2000	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		2001	/* ^ this is no longer true, as pending_w could be here */
1566		2002
1567	p->w->pending = 0;	2003	p->w->pending = 0;
1568	EV_CB_INVOKE (p->w, p->events);	2004	EV_CB_INVOKE (p->w, p->events);
1569	}	2005	EV_FREQUENT_CHECK;
1570	}	2006	}
1571	}	2007	}
1572		2008
1573	#if EV_IDLE_ENABLE	2009	#if EV_IDLE_ENABLE
1574	void inline_size	2010	/* make idle watchers pending. this handles the "call-idle */
		2011	/* only when higher priorities are idle" logic */
		2012	inline_size void
1575	idle_reify (EV_P)	2013	idle_reify (EV_P)
1576	{	2014	{
1577	if (expect_false (idleall))	2015	if (expect_false (idleall))
1578	{	2016	{
1579	int pri;	2017	int pri;
…		…
1591	}	2029	}
1592	}	2030	}
1593	}	2031	}
1594	#endif	2032	#endif
1595		2033
1596	void inline_size	2034	/* make timers pending */
		2035	inline_size void
1597	timers_reify (EV_P)	2036	timers_reify (EV_P)
1598	{	2037	{
		2038	EV_FREQUENT_CHECK;
		2039
1599	while (timercnt && ANHE_at (timers [HEAP0]) <= mn_now)	2040	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1600	{	2041	{
1601	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	2042	do
1602
1603	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1604
1605	/* first reschedule or stop timer */
1606	if (w->repeat)
1607	{	2043	{
		2044	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2045
		2046	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2047
		2048	/* first reschedule or stop timer */
		2049	if (w->repeat)
		2050	{
		2051	ev_at (w) += w->repeat;
		2052	if (ev_at (w) < mn_now)
		2053	ev_at (w) = mn_now;
		2054
1608	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	2055	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1609		2056
1610	ev_at (w) += w->repeat;	2057	ANHE_at_cache (timers [HEAP0]);
1611	if (ev_at (w) < mn_now)
1612	ev_at (w) = mn_now;
1613
1614	downheap (timers, timercnt, HEAP0);	2058	downheap (timers, timercnt, HEAP0);
		2059	}
		2060	else
		2061	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2062
		2063	EV_FREQUENT_CHECK;
		2064	feed_reverse (EV_A_ (W)w);
1615	}	2065	}
1616	else	2066	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1617	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1618		2067
1619	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	2068	feed_reverse_done (EV_A_ EV_TIMEOUT);
1620	}	2069	}
1621	}	2070	}
1622		2071
1623	#if EV_PERIODIC_ENABLE	2072	#if EV_PERIODIC_ENABLE
1624	void inline_size	2073	/* make periodics pending */
		2074	inline_size void
1625	periodics_reify (EV_P)	2075	periodics_reify (EV_P)
1626	{	2076	{
		2077	EV_FREQUENT_CHECK;
		2078
1627	while (periodiccnt && ANHE_at (periodics [HEAP0]) <= ev_rt_now)	2079	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1628	{	2080	{
1629	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	2081	int feed_count = 0;
1630		2082
1631	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	2083	do
1632
1633	/* first reschedule or stop timer */
1634	if (w->reschedule_cb)
1635	{	2084	{
		2085	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2086
		2087	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2088
		2089	/* first reschedule or stop timer */
		2090	if (w->reschedule_cb)
		2091	{
1636	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);	2092	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2093
1637	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));	2094	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		2095
		2096	ANHE_at_cache (periodics [HEAP0]);
1638	downheap (periodics, periodiccnt, 1);	2097	downheap (periodics, periodiccnt, HEAP0);
		2098	}
		2099	else if (w->interval)
		2100	{
		2101	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2102	/* if next trigger time is not sufficiently in the future, put it there */
		2103	/* this might happen because of floating point inexactness */
		2104	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		2105	{
		2106	ev_at (w) += w->interval;
		2107
		2108	/* if interval is unreasonably low we might still have a time in the past */
		2109	/* so correct this. this will make the periodic very inexact, but the user */
		2110	/* has effectively asked to get triggered more often than possible */
		2111	if (ev_at (w) < ev_rt_now)
		2112	ev_at (w) = ev_rt_now;
		2113	}
		2114
		2115	ANHE_at_cache (periodics [HEAP0]);
		2116	downheap (periodics, periodiccnt, HEAP0);
		2117	}
		2118	else
		2119	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2120
		2121	EV_FREQUENT_CHECK;
		2122	feed_reverse (EV_A_ (W)w);
1639	}	2123	}
1640	else if (w->interval)	2124	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1641	{
1642	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1643	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1644	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1645	downheap (periodics, periodiccnt, HEAP0);
1646	}
1647	else
1648	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1649		2125
1650	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	2126	feed_reverse_done (EV_A_ EV_PERIODIC);
1651	}	2127	}
1652	}	2128	}
1653		2129
		2130	/* simply recalculate all periodics */
		2131	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1654	static void noinline	2132	static void noinline
1655	periodics_reschedule (EV_P)	2133	periodics_reschedule (EV_P)
1656	{	2134	{
1657	int i;	2135	int i;
1658		2136
…		…
1663		2141
1664	if (w->reschedule_cb)	2142	if (w->reschedule_cb)
1665	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2143	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1666	else if (w->interval)	2144	else if (w->interval)
1667	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2145	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2146
		2147	ANHE_at_cache (periodics [i]);
		2148	}
		2149
		2150	reheap (periodics, periodiccnt);
		2151	}
		2152	#endif
		2153
		2154	/* adjust all timers by a given offset */
		2155	static void noinline
		2156	timers_reschedule (EV_P_ ev_tstamp adjust)
		2157	{
		2158	int i;
		2159
		2160	for (i = 0; i < timercnt; ++i)
1668	}	2161	{
1669		2162	ANHE *he = timers + i + HEAP0;
1670	/* now rebuild the heap, this for the 2-heap, inefficient for the 4-heap, but correct */	2163	ANHE_w (*he)->at += adjust;
1671	for (i = periodiccnt >> 1; --i; )	2164	ANHE_at_cache (*he);
1672	downheap (periodics, periodiccnt, i + HEAP0);	2165	}
1673	}	2166	}
1674	#endif
1675		2167
1676	void inline_speed	2168	/* fetch new monotonic and realtime times from the kernel */
		2169	/* also detect if there was a timejump, and act accordingly */
		2170	inline_speed void
1677	time_update (EV_P_ ev_tstamp max_block)	2171	time_update (EV_P_ ev_tstamp max_block)
1678	{	2172	{
1679	int i;
1680
1681	#if EV_USE_MONOTONIC	2173	#if EV_USE_MONOTONIC
1682	if (expect_true (have_monotonic))	2174	if (expect_true (have_monotonic))
1683	{	2175	{
		2176	int i;
1684	ev_tstamp odiff = rtmn_diff;	2177	ev_tstamp odiff = rtmn_diff;
1685		2178
1686	mn_now = get_clock ();	2179	mn_now = get_clock ();
1687		2180
1688	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2181	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1714	ev_rt_now = ev_time ();	2207	ev_rt_now = ev_time ();
1715	mn_now = get_clock ();	2208	mn_now = get_clock ();
1716	now_floor = mn_now;	2209	now_floor = mn_now;
1717	}	2210	}
1718		2211
		2212	/* no timer adjustment, as the monotonic clock doesn't jump */
		2213	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1719	# if EV_PERIODIC_ENABLE	2214	# if EV_PERIODIC_ENABLE
1720	periodics_reschedule (EV_A);	2215	periodics_reschedule (EV_A);
1721	# endif	2216	# endif
1722	/* no timer adjustment, as the monotonic clock doesn't jump */
1723	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1724	}	2217	}
1725	else	2218	else
1726	#endif	2219	#endif
1727	{	2220	{
1728	ev_rt_now = ev_time ();	2221	ev_rt_now = ev_time ();
1729		2222
1730	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2223	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1731	{	2224	{
		2225	/* adjust timers. this is easy, as the offset is the same for all of them */
		2226	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1732	#if EV_PERIODIC_ENABLE	2227	#if EV_PERIODIC_ENABLE
1733	periodics_reschedule (EV_A);	2228	periodics_reschedule (EV_A);
1734	#endif	2229	#endif
1735	/* adjust timers. this is easy, as the offset is the same for all of them */
1736	for (i = 0; i < timercnt; ++i)
1737	{
1738	ANHE *he = timers + i + HEAP0;
1739	ANHE_w (*he)->at += ev_rt_now - mn_now;
1740	ANHE_at_set (*he);
1741	}
1742	}	2230	}
1743		2231
1744	mn_now = ev_rt_now;	2232	mn_now = ev_rt_now;
1745	}	2233	}
1746	}	2234	}
1747		2235
1748	void	2236	void
1749	ev_ref (EV_P)
1750	{
1751	++activecnt;
1752	}
1753
1754	void
1755	ev_unref (EV_P)
1756	{
1757	--activecnt;
1758	}
1759
1760	static int loop_done;
1761
1762	void
1763	ev_loop (EV_P_ int flags)	2237	ev_loop (EV_P_ int flags)
1764	{	2238	{
		2239	#if EV_MINIMAL < 2
		2240	++loop_depth;
		2241	#endif
		2242
		2243	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2244
1765	loop_done = EVUNLOOP_CANCEL;	2245	loop_done = EVUNLOOP_CANCEL;
1766		2246
1767	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2247	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1768		2248
1769	do	2249	do
1770	{	2250	{
		2251	#if EV_VERIFY >= 2
		2252	ev_loop_verify (EV_A);
		2253	#endif
		2254
1771	#ifndef _WIN32	2255	#ifndef _WIN32
1772	if (expect_false (curpid)) /* penalise the forking check even more */	2256	if (expect_false (curpid)) /* penalise the forking check even more */
1773	if (expect_false (getpid () != curpid))	2257	if (expect_false (getpid () != curpid))
1774	{	2258	{
1775	curpid = getpid ();	2259	curpid = getpid ();
…		…
1781	/* we might have forked, so queue fork handlers */	2265	/* we might have forked, so queue fork handlers */
1782	if (expect_false (postfork))	2266	if (expect_false (postfork))
1783	if (forkcnt)	2267	if (forkcnt)
1784	{	2268	{
1785	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2269	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1786	call_pending (EV_A);	2270	EV_INVOKE_PENDING;
1787	}	2271	}
1788	#endif	2272	#endif
1789		2273
1790	/* queue prepare watchers (and execute them) */	2274	/* queue prepare watchers (and execute them) */
1791	if (expect_false (preparecnt))	2275	if (expect_false (preparecnt))
1792	{	2276	{
1793	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2277	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1794	call_pending (EV_A);	2278	EV_INVOKE_PENDING;
1795	}	2279	}
1796		2280
1797	if (expect_false (!activecnt))	2281	if (expect_false (loop_done))
1798	break;	2282	break;
1799		2283
1800	/* we might have forked, so reify kernel state if necessary */	2284	/* we might have forked, so reify kernel state if necessary */
1801	if (expect_false (postfork))	2285	if (expect_false (postfork))
1802	loop_fork (EV_A);	2286	loop_fork (EV_A);
…		…
1809	ev_tstamp waittime = 0.;	2293	ev_tstamp waittime = 0.;
1810	ev_tstamp sleeptime = 0.;	2294	ev_tstamp sleeptime = 0.;
1811		2295
1812	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2296	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1813	{	2297	{
		2298	/* remember old timestamp for io_blocktime calculation */
		2299	ev_tstamp prev_mn_now = mn_now;
		2300
1814	/* update time to cancel out callback processing overhead */	2301	/* update time to cancel out callback processing overhead */
1815	time_update (EV_A_ 1e100);	2302	time_update (EV_A_ 1e100);
1816		2303
1817	waittime = MAX_BLOCKTIME;	2304	waittime = MAX_BLOCKTIME;
1818		2305
…		…
1828	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2315	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1829	if (waittime > to) waittime = to;	2316	if (waittime > to) waittime = to;
1830	}	2317	}
1831	#endif	2318	#endif
1832		2319
		2320	/* don't let timeouts decrease the waittime below timeout_blocktime */
1833	if (expect_false (waittime < timeout_blocktime))	2321	if (expect_false (waittime < timeout_blocktime))
1834	waittime = timeout_blocktime;	2322	waittime = timeout_blocktime;
1835		2323
1836	sleeptime = waittime - backend_fudge;	2324	/* extra check because io_blocktime is commonly 0 */
1837
1838	if (expect_true (sleeptime > io_blocktime))	2325	if (expect_false (io_blocktime))
1839	sleeptime = io_blocktime;
1840
1841	if (sleeptime)
1842	{	2326	{
		2327	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2328
		2329	if (sleeptime > waittime - backend_fudge)
		2330	sleeptime = waittime - backend_fudge;
		2331
		2332	if (expect_true (sleeptime > 0.))
		2333	{
1843	ev_sleep (sleeptime);	2334	ev_sleep (sleeptime);
1844	waittime -= sleeptime;	2335	waittime -= sleeptime;
		2336	}
1845	}	2337	}
1846	}	2338	}
1847		2339
		2340	#if EV_MINIMAL < 2
1848	++loop_count;	2341	++loop_count;
		2342	#endif
		2343	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1849	backend_poll (EV_A_ waittime);	2344	backend_poll (EV_A_ waittime);
		2345	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1850		2346
1851	/* update ev_rt_now, do magic */	2347	/* update ev_rt_now, do magic */
1852	time_update (EV_A_ waittime + sleeptime);	2348	time_update (EV_A_ waittime + sleeptime);
1853	}	2349	}
1854		2350
…		…
1865		2361
1866	/* queue check watchers, to be executed first */	2362	/* queue check watchers, to be executed first */
1867	if (expect_false (checkcnt))	2363	if (expect_false (checkcnt))
1868	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2364	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1869		2365
1870	call_pending (EV_A);	2366	EV_INVOKE_PENDING;
1871	}	2367	}
1872	while (expect_true (	2368	while (expect_true (
1873	activecnt	2369	activecnt
1874	&& !loop_done	2370	&& !loop_done
1875	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2371	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1876	));	2372	));
1877		2373
1878	if (loop_done == EVUNLOOP_ONE)	2374	if (loop_done == EVUNLOOP_ONE)
1879	loop_done = EVUNLOOP_CANCEL;	2375	loop_done = EVUNLOOP_CANCEL;
		2376
		2377	#if EV_MINIMAL < 2
		2378	--loop_depth;
		2379	#endif
1880	}	2380	}
1881		2381
1882	void	2382	void
1883	ev_unloop (EV_P_ int how)	2383	ev_unloop (EV_P_ int how)
1884	{	2384	{
1885	loop_done = how;	2385	loop_done = how;
1886	}	2386	}
1887		2387
		2388	void
		2389	ev_ref (EV_P)
		2390	{
		2391	++activecnt;
		2392	}
		2393
		2394	void
		2395	ev_unref (EV_P)
		2396	{
		2397	--activecnt;
		2398	}
		2399
		2400	void
		2401	ev_now_update (EV_P)
		2402	{
		2403	time_update (EV_A_ 1e100);
		2404	}
		2405
		2406	void
		2407	ev_suspend (EV_P)
		2408	{
		2409	ev_now_update (EV_A);
		2410	}
		2411
		2412	void
		2413	ev_resume (EV_P)
		2414	{
		2415	ev_tstamp mn_prev = mn_now;
		2416
		2417	ev_now_update (EV_A);
		2418	timers_reschedule (EV_A_ mn_now - mn_prev);
		2419	#if EV_PERIODIC_ENABLE
		2420	/* TODO: really do this? */
		2421	periodics_reschedule (EV_A);
		2422	#endif
		2423	}
		2424
1888	/*****************************************************************************/	2425	/*****************************************************************************/
		2426	/* singly-linked list management, used when the expected list length is short */
1889		2427
1890	void inline_size	2428	inline_size void
1891	wlist_add (WL *head, WL elem)	2429	wlist_add (WL *head, WL elem)
1892	{	2430	{
1893	elem->next = *head;	2431	elem->next = *head;
1894	*head = elem;	2432	*head = elem;
1895	}	2433	}
1896		2434
1897	void inline_size	2435	inline_size void
1898	wlist_del (WL *head, WL elem)	2436	wlist_del (WL *head, WL elem)
1899	{	2437	{
1900	while (*head)	2438	while (*head)
1901	{	2439	{
1902	if (*head == elem)	2440	if (expect_true (*head == elem))
1903	{	2441	{
1904	*head = elem->next;	2442	*head = elem->next;
1905	return;	2443	break;
1906	}	2444	}
1907		2445
1908	head = &(*head)->next;	2446	head = &(*head)->next;
1909	}	2447	}
1910	}	2448	}
1911		2449
1912	void inline_speed	2450	/* internal, faster, version of ev_clear_pending */
		2451	inline_speed void
1913	clear_pending (EV_P_ W w)	2452	clear_pending (EV_P_ W w)
1914	{	2453	{
1915	if (w->pending)	2454	if (w->pending)
1916	{	2455	{
1917	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2456	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1918	w->pending = 0;	2457	w->pending = 0;
1919	}	2458	}
1920	}	2459	}
1921		2460
1922	int	2461	int
…		…
1926	int pending = w_->pending;	2465	int pending = w_->pending;
1927		2466
1928	if (expect_true (pending))	2467	if (expect_true (pending))
1929	{	2468	{
1930	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2469	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2470	p->w = (W)&pending_w;
1931	w_->pending = 0;	2471	w_->pending = 0;
1932	p->w = 0;
1933	return p->events;	2472	return p->events;
1934	}	2473	}
1935	else	2474	else
1936	return 0;	2475	return 0;
1937	}	2476	}
1938		2477
1939	void inline_size	2478	inline_size void
1940	pri_adjust (EV_P_ W w)	2479	pri_adjust (EV_P_ W w)
1941	{	2480	{
1942	int pri = w->priority;	2481	int pri = ev_priority (w);
1943	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2482	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1944	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2483	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1945	w->priority = pri;	2484	ev_set_priority (w, pri);
1946	}	2485	}
1947		2486
1948	void inline_speed	2487	inline_speed void
1949	ev_start (EV_P_ W w, int active)	2488	ev_start (EV_P_ W w, int active)
1950	{	2489	{
1951	pri_adjust (EV_A_ w);	2490	pri_adjust (EV_A_ w);
1952	w->active = active;	2491	w->active = active;
1953	ev_ref (EV_A);	2492	ev_ref (EV_A);
1954	}	2493	}
1955		2494
1956	void inline_size	2495	inline_size void
1957	ev_stop (EV_P_ W w)	2496	ev_stop (EV_P_ W w)
1958	{	2497	{
1959	ev_unref (EV_A);	2498	ev_unref (EV_A);
1960	w->active = 0;	2499	w->active = 0;
1961	}	2500	}
…		…
1968	int fd = w->fd;	2507	int fd = w->fd;
1969		2508
1970	if (expect_false (ev_is_active (w)))	2509	if (expect_false (ev_is_active (w)))
1971	return;	2510	return;
1972		2511
1973	assert (("ev_io_start called with negative fd", fd >= 0));	2512	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2513	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2514
		2515	EV_FREQUENT_CHECK;
1974		2516
1975	ev_start (EV_A_ (W)w, 1);	2517	ev_start (EV_A_ (W)w, 1);
1976	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2518	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1977	wlist_add (&anfds[fd].head, (WL)w);	2519	wlist_add (&anfds[fd].head, (WL)w);
1978		2520
1979	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2521	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1980	w->events &= ~EV_IOFDSET;	2522	w->events &= ~EV__IOFDSET;
		2523
		2524	EV_FREQUENT_CHECK;
1981	}	2525	}
1982		2526
1983	void noinline	2527	void noinline
1984	ev_io_stop (EV_P_ ev_io *w)	2528	ev_io_stop (EV_P_ ev_io *w)
1985	{	2529	{
1986	clear_pending (EV_A_ (W)w);	2530	clear_pending (EV_A_ (W)w);
1987	if (expect_false (!ev_is_active (w)))	2531	if (expect_false (!ev_is_active (w)))
1988	return;	2532	return;
1989		2533
1990	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2534	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2535
		2536	EV_FREQUENT_CHECK;
1991		2537
1992	wlist_del (&anfds[w->fd].head, (WL)w);	2538	wlist_del (&anfds[w->fd].head, (WL)w);
1993	ev_stop (EV_A_ (W)w);	2539	ev_stop (EV_A_ (W)w);
1994		2540
1995	fd_change (EV_A_ w->fd, 1);	2541	fd_change (EV_A_ w->fd, 1);
		2542
		2543	EV_FREQUENT_CHECK;
1996	}	2544	}
1997		2545
1998	void noinline	2546	void noinline
1999	ev_timer_start (EV_P_ ev_timer *w)	2547	ev_timer_start (EV_P_ ev_timer *w)
2000	{	2548	{
2001	if (expect_false (ev_is_active (w)))	2549	if (expect_false (ev_is_active (w)))
2002	return;	2550	return;
2003		2551
2004	ev_at (w) += mn_now;	2552	ev_at (w) += mn_now;
2005		2553
2006	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2554	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2007		2555
		2556	EV_FREQUENT_CHECK;
		2557
		2558	++timercnt;
2008	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);	2559	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2009	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);	2560	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2010	ANHE_w (timers [ev_active (w)]) = (WT)w;	2561	ANHE_w (timers [ev_active (w)]) = (WT)w;
2011	ANHE_at_set (timers [ev_active (w)]);	2562	ANHE_at_cache (timers [ev_active (w)]);
2012	upheap (timers, ev_active (w));	2563	upheap (timers, ev_active (w));
2013		2564
		2565	EV_FREQUENT_CHECK;
		2566
2014	/*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/	2567	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2015	}	2568	}
2016		2569
2017	void noinline	2570	void noinline
2018	ev_timer_stop (EV_P_ ev_timer *w)	2571	ev_timer_stop (EV_P_ ev_timer *w)
2019	{	2572	{
2020	clear_pending (EV_A_ (W)w);	2573	clear_pending (EV_A_ (W)w);
2021	if (expect_false (!ev_is_active (w)))	2574	if (expect_false (!ev_is_active (w)))
2022	return;	2575	return;
2023		2576
		2577	EV_FREQUENT_CHECK;
		2578
2024	{	2579	{
2025	int active = ev_active (w);	2580	int active = ev_active (w);
2026		2581
2027	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2582	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2028		2583
		2584	--timercnt;
		2585
2029	if (expect_true (active < timercnt + HEAP0 - 1))	2586	if (expect_true (active < timercnt + HEAP0))
2030	{	2587	{
2031	timers [active] = timers [timercnt + HEAP0 - 1];	2588	timers [active] = timers [timercnt + HEAP0];
2032	adjustheap (timers, timercnt, active);	2589	adjustheap (timers, timercnt, active);
2033	}	2590	}
2034
2035	--timercnt;
2036	}	2591	}
2037		2592
2038	ev_at (w) -= mn_now;	2593	ev_at (w) -= mn_now;
2039		2594
2040	ev_stop (EV_A_ (W)w);	2595	ev_stop (EV_A_ (W)w);
		2596
		2597	EV_FREQUENT_CHECK;
2041	}	2598	}
2042		2599
2043	void noinline	2600	void noinline
2044	ev_timer_again (EV_P_ ev_timer *w)	2601	ev_timer_again (EV_P_ ev_timer *w)
2045	{	2602	{
		2603	EV_FREQUENT_CHECK;
		2604
2046	if (ev_is_active (w))	2605	if (ev_is_active (w))
2047	{	2606	{
2048	if (w->repeat)	2607	if (w->repeat)
2049	{	2608	{
2050	ev_at (w) = mn_now + w->repeat;	2609	ev_at (w) = mn_now + w->repeat;
2051	ANHE_at_set (timers [ev_active (w)]);	2610	ANHE_at_cache (timers [ev_active (w)]);
2052	adjustheap (timers, timercnt, ev_active (w));	2611	adjustheap (timers, timercnt, ev_active (w));
2053	}	2612	}
2054	else	2613	else
2055	ev_timer_stop (EV_A_ w);	2614	ev_timer_stop (EV_A_ w);
2056	}	2615	}
2057	else if (w->repeat)	2616	else if (w->repeat)
2058	{	2617	{
2059	ev_at (w) = w->repeat;	2618	ev_at (w) = w->repeat;
2060	ev_timer_start (EV_A_ w);	2619	ev_timer_start (EV_A_ w);
2061	}	2620	}
		2621
		2622	EV_FREQUENT_CHECK;
		2623	}
		2624
		2625	ev_tstamp
		2626	ev_timer_remaining (EV_P_ ev_timer *w)
		2627	{
		2628	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2062	}	2629	}
2063		2630
2064	#if EV_PERIODIC_ENABLE	2631	#if EV_PERIODIC_ENABLE
2065	void noinline	2632	void noinline
2066	ev_periodic_start (EV_P_ ev_periodic *w)	2633	ev_periodic_start (EV_P_ ev_periodic *w)
…		…
2070		2637
2071	if (w->reschedule_cb)	2638	if (w->reschedule_cb)
2072	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2639	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2073	else if (w->interval)	2640	else if (w->interval)
2074	{	2641	{
2075	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2642	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2076	/* this formula differs from the one in periodic_reify because we do not always round up */	2643	/* this formula differs from the one in periodic_reify because we do not always round up */
2077	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2644	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2078	}	2645	}
2079	else	2646	else
2080	ev_at (w) = w->offset;	2647	ev_at (w) = w->offset;
2081		2648
		2649	EV_FREQUENT_CHECK;
		2650
		2651	++periodiccnt;
2082	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);	2652	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2083	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);	2653	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2084	ANHE_w (periodics [ev_active (w)]) = (WT)w;	2654	ANHE_w (periodics [ev_active (w)]) = (WT)w;
		2655	ANHE_at_cache (periodics [ev_active (w)]);
2085	upheap (periodics, ev_active (w));	2656	upheap (periodics, ev_active (w));
2086		2657
		2658	EV_FREQUENT_CHECK;
		2659
2087	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2660	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2088	}	2661	}
2089		2662
2090	void noinline	2663	void noinline
2091	ev_periodic_stop (EV_P_ ev_periodic *w)	2664	ev_periodic_stop (EV_P_ ev_periodic *w)
2092	{	2665	{
2093	clear_pending (EV_A_ (W)w);	2666	clear_pending (EV_A_ (W)w);
2094	if (expect_false (!ev_is_active (w)))	2667	if (expect_false (!ev_is_active (w)))
2095	return;	2668	return;
2096		2669
		2670	EV_FREQUENT_CHECK;
		2671
2097	{	2672	{
2098	int active = ev_active (w);	2673	int active = ev_active (w);
2099		2674
2100	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2675	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2101		2676
		2677	--periodiccnt;
		2678
2102	if (expect_true (active < periodiccnt + HEAP0 - 1))	2679	if (expect_true (active < periodiccnt + HEAP0))
2103	{	2680	{
2104	periodics [active] = periodics [periodiccnt + HEAP0 - 1];	2681	periodics [active] = periodics [periodiccnt + HEAP0];
2105	adjustheap (periodics, periodiccnt, active);	2682	adjustheap (periodics, periodiccnt, active);
2106	}	2683	}
2107
2108	--periodiccnt;
2109	}	2684	}
2110		2685
2111	ev_stop (EV_A_ (W)w);	2686	ev_stop (EV_A_ (W)w);
		2687
		2688	EV_FREQUENT_CHECK;
2112	}	2689	}
2113		2690
2114	void noinline	2691	void noinline
2115	ev_periodic_again (EV_P_ ev_periodic *w)	2692	ev_periodic_again (EV_P_ ev_periodic *w)
2116	{	2693	{
…		…
2125	#endif	2702	#endif
2126		2703
2127	void noinline	2704	void noinline
2128	ev_signal_start (EV_P_ ev_signal *w)	2705	ev_signal_start (EV_P_ ev_signal *w)
2129	{	2706	{
2130	#if EV_MULTIPLICITY
2131	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2132	#endif
2133	if (expect_false (ev_is_active (w)))	2707	if (expect_false (ev_is_active (w)))
2134	return;	2708	return;
2135		2709
2136	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2710	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2137		2711
2138	evpipe_init (EV_A);	2712	#if EV_MULTIPLICITY
		2713	assert (("libev: a signal must not be attached to two different loops",
		2714	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2139		2715
		2716	signals [w->signum - 1].loop = EV_A;
		2717	#endif
		2718
		2719	EV_FREQUENT_CHECK;
		2720
		2721	#if EV_USE_SIGNALFD
		2722	if (sigfd == -2)
2140	{	2723	{
2141	#ifndef _WIN32	2724	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2142	sigset_t full, prev;	2725	if (sigfd < 0 && errno == EINVAL)
2143	sigfillset (&full);	2726	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2144	sigprocmask (SIG_SETMASK, &full, &prev);
2145	#endif
2146		2727
2147	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2728	if (sigfd >= 0)
		2729	{
		2730	fd_intern (sigfd); /* doing it twice will not hurt */
2148		2731
2149	#ifndef _WIN32	2732	sigemptyset (&sigfd_set);
2150	sigprocmask (SIG_SETMASK, &prev, 0);	2733
2151	#endif	2734	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2735	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2736	ev_io_start (EV_A_ &sigfd_w);
		2737	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2738	}
2152	}	2739	}
		2740
		2741	if (sigfd >= 0)
		2742	{
		2743	/* TODO: check .head */
		2744	sigaddset (&sigfd_set, w->signum);
		2745	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2746
		2747	signalfd (sigfd, &sigfd_set, 0);
		2748	}
		2749	#endif
2153		2750
2154	ev_start (EV_A_ (W)w, 1);	2751	ev_start (EV_A_ (W)w, 1);
2155	wlist_add (&signals [w->signum - 1].head, (WL)w);	2752	wlist_add (&signals [w->signum - 1].head, (WL)w);
2156		2753
2157	if (!((WL)w)->next)	2754	if (!((WL)w)->next)
		2755	# if EV_USE_SIGNALFD
		2756	if (sigfd < 0) /*TODO*/
		2757	# endif
2158	{	2758	{
2159	#if _WIN32	2759	# ifdef _WIN32
		2760	evpipe_init (EV_A);
		2761
2160	signal (w->signum, ev_sighandler);	2762	signal (w->signum, ev_sighandler);
2161	#else	2763	# else
2162	struct sigaction sa;	2764	struct sigaction sa;
		2765
		2766	evpipe_init (EV_A);
		2767
2163	sa.sa_handler = ev_sighandler;	2768	sa.sa_handler = ev_sighandler;
2164	sigfillset (&sa.sa_mask);	2769	sigfillset (&sa.sa_mask);
2165	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2770	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2166	sigaction (w->signum, &sa, 0);	2771	sigaction (w->signum, &sa, 0);
		2772
		2773	sigemptyset (&sa.sa_mask);
		2774	sigaddset (&sa.sa_mask, w->signum);
		2775	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2167	#endif	2776	#endif
2168	}	2777	}
		2778
		2779	EV_FREQUENT_CHECK;
2169	}	2780	}
2170		2781
2171	void noinline	2782	void noinline
2172	ev_signal_stop (EV_P_ ev_signal *w)	2783	ev_signal_stop (EV_P_ ev_signal *w)
2173	{	2784	{
2174	clear_pending (EV_A_ (W)w);	2785	clear_pending (EV_A_ (W)w);
2175	if (expect_false (!ev_is_active (w)))	2786	if (expect_false (!ev_is_active (w)))
2176	return;	2787	return;
2177		2788
		2789	EV_FREQUENT_CHECK;
		2790
2178	wlist_del (&signals [w->signum - 1].head, (WL)w);	2791	wlist_del (&signals [w->signum - 1].head, (WL)w);
2179	ev_stop (EV_A_ (W)w);	2792	ev_stop (EV_A_ (W)w);
2180		2793
2181	if (!signals [w->signum - 1].head)	2794	if (!signals [w->signum - 1].head)
		2795	{
		2796	#if EV_MULTIPLICITY
		2797	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2798	#endif
		2799	#if EV_USE_SIGNALFD
		2800	if (sigfd >= 0)
		2801	{
		2802	sigset_t ss;
		2803
		2804	sigemptyset (&ss);
		2805	sigaddset (&ss, w->signum);
		2806	sigdelset (&sigfd_set, w->signum);
		2807
		2808	signalfd (sigfd, &sigfd_set, 0);
		2809	sigprocmask (SIG_UNBLOCK, &ss, 0);
		2810	}
		2811	else
		2812	#endif
2182	signal (w->signum, SIG_DFL);	2813	signal (w->signum, SIG_DFL);
		2814	}
		2815
		2816	EV_FREQUENT_CHECK;
2183	}	2817	}
2184		2818
2185	void	2819	void
2186	ev_child_start (EV_P_ ev_child *w)	2820	ev_child_start (EV_P_ ev_child *w)
2187	{	2821	{
2188	#if EV_MULTIPLICITY	2822	#if EV_MULTIPLICITY
2189	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2823	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2190	#endif	2824	#endif
2191	if (expect_false (ev_is_active (w)))	2825	if (expect_false (ev_is_active (w)))
2192	return;	2826	return;
2193		2827
		2828	EV_FREQUENT_CHECK;
		2829
2194	ev_start (EV_A_ (W)w, 1);	2830	ev_start (EV_A_ (W)w, 1);
2195	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2831	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2832
		2833	EV_FREQUENT_CHECK;
2196	}	2834	}
2197		2835
2198	void	2836	void
2199	ev_child_stop (EV_P_ ev_child *w)	2837	ev_child_stop (EV_P_ ev_child *w)
2200	{	2838	{
2201	clear_pending (EV_A_ (W)w);	2839	clear_pending (EV_A_ (W)w);
2202	if (expect_false (!ev_is_active (w)))	2840	if (expect_false (!ev_is_active (w)))
2203	return;	2841	return;
2204		2842
		2843	EV_FREQUENT_CHECK;
		2844
2205	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2845	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2206	ev_stop (EV_A_ (W)w);	2846	ev_stop (EV_A_ (W)w);
		2847
		2848	EV_FREQUENT_CHECK;
2207	}	2849	}
2208		2850
2209	#if EV_STAT_ENABLE	2851	#if EV_STAT_ENABLE
2210		2852
2211	# ifdef _WIN32	2853	# ifdef _WIN32
2212	# undef lstat	2854	# undef lstat
2213	# define lstat(a,b) _stati64 (a,b)	2855	# define lstat(a,b) _stati64 (a,b)
2214	# endif	2856	# endif
2215		2857
2216	#define DEF_STAT_INTERVAL 5.0074891	2858	#define DEF_STAT_INTERVAL 5.0074891
		2859	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2217	#define MIN_STAT_INTERVAL 0.1074891	2860	#define MIN_STAT_INTERVAL 0.1074891
2218		2861
2219	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2862	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2220		2863
2221	#if EV_USE_INOTIFY	2864	#if EV_USE_INOTIFY
2222	# define EV_INOTIFY_BUFSIZE 8192	2865
		2866	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		2867	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2223		2868
2224	static void noinline	2869	static void noinline
2225	infy_add (EV_P_ ev_stat *w)	2870	infy_add (EV_P_ ev_stat *w)
2226	{	2871	{
2227	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);	2872	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);
2228		2873
2229	if (w->wd < 0)	2874	if (w->wd >= 0)
		2875	{
		2876	struct statfs sfs;
		2877
		2878	/* now local changes will be tracked by inotify, but remote changes won't */
		2879	/* unless the filesystem is known to be local, we therefore still poll */
		2880	/* also do poll on <2.6.25, but with normal frequency */
		2881
		2882	if (!fs_2625)
		2883	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2884	else if (!statfs (w->path, &sfs)
		2885	&& (sfs.f_type == 0x1373 /* devfs */
		2886	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2887	|| sfs.f_type == 0x3153464a /* jfs */
		2888	|| sfs.f_type == 0x52654973 /* reiser3 */
		2889	|| sfs.f_type == 0x01021994 /* tempfs */
		2890	|| sfs.f_type == 0x58465342 /* xfs */))
		2891	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2892	else
		2893	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2230	{	2894	}
2231	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2895	else
		2896	{
		2897	/* can't use inotify, continue to stat */
		2898	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2232		2899
2233	/* monitor some parent directory for speedup hints */	2900	/* if path is not there, monitor some parent directory for speedup hints */
2234	/* note that exceeding the hardcoded limit is not a correctness issue, */	2901	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2235	/* but an efficiency issue only */	2902	/* but an efficiency issue only */
2236	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2903	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2237	{	2904	{
2238	char path [4096];	2905	char path [4096];
2239	strcpy (path, w->path);	2906	strcpy (path, w->path);
…		…
2243	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2910	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2244	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2911	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2245		2912
2246	char *pend = strrchr (path, '/');	2913	char *pend = strrchr (path, '/');
2247		2914
2248	if (!pend)	2915	if (!pend || pend == path)
2249	break; /* whoops, no '/', complain to your admin */	2916	break;
2250		2917
2251	*pend = 0;	2918	*pend = 0;
2252	w->wd = inotify_add_watch (fs_fd, path, mask);	2919	w->wd = inotify_add_watch (fs_fd, path, mask);
2253	}	2920	}
2254	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2921	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2255	}	2922	}
2256	}	2923	}
2257	else
2258	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2259		2924
2260	if (w->wd >= 0)	2925	if (w->wd >= 0)
2261	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2926	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2927
		2928	/* now re-arm timer, if required */
		2929	if (ev_is_active (&w->timer)) ev_ref (EV_A);
		2930	ev_timer_again (EV_A_ &w->timer);
		2931	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2262	}	2932	}
2263		2933
2264	static void noinline	2934	static void noinline
2265	infy_del (EV_P_ ev_stat *w)	2935	infy_del (EV_P_ ev_stat *w)
2266	{	2936	{
…		…
2280		2950
2281	static void noinline	2951	static void noinline
2282	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2952	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2283	{	2953	{
2284	if (slot < 0)	2954	if (slot < 0)
2285	/* overflow, need to check for all hahs slots */	2955	/* overflow, need to check for all hash slots */
2286	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2956	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2287	infy_wd (EV_A_ slot, wd, ev);	2957	infy_wd (EV_A_ slot, wd, ev);
2288	else	2958	else
2289	{	2959	{
2290	WL w_;	2960	WL w_;
…		…
2296		2966
2297	if (w->wd == wd || wd == -1)	2967	if (w->wd == wd || wd == -1)
2298	{	2968	{
2299	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2969	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2300	{	2970	{
		2971	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2301	w->wd = -1;	2972	w->wd = -1;
2302	infy_add (EV_A_ w); /* re-add, no matter what */	2973	infy_add (EV_A_ w); /* re-add, no matter what */
2303	}	2974	}
2304		2975
2305	stat_timer_cb (EV_A_ &w->timer, 0);	2976	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2310		2981
2311	static void	2982	static void
2312	infy_cb (EV_P_ ev_io *w, int revents)	2983	infy_cb (EV_P_ ev_io *w, int revents)
2313	{	2984	{
2314	char buf [EV_INOTIFY_BUFSIZE];	2985	char buf [EV_INOTIFY_BUFSIZE];
2315	struct inotify_event *ev = (struct inotify_event *)buf;
2316	int ofs;	2986	int ofs;
2317	int len = read (fs_fd, buf, sizeof (buf));	2987	int len = read (fs_fd, buf, sizeof (buf));
2318		2988
2319	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2989	for (ofs = 0; ofs < len; )
		2990	{
		2991	struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2320	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2992	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2993	ofs += sizeof (struct inotify_event) + ev->len;
		2994	}
2321	}	2995	}
2322		2996
2323	void inline_size	2997	inline_size void
		2998	check_2625 (EV_P)
		2999	{
		3000	/* kernels < 2.6.25 are borked
		3001	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		3002	*/
		3003	struct utsname buf;
		3004	int major, minor, micro;
		3005
		3006	if (uname (&buf))
		3007	return;
		3008
		3009	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		3010	return;
		3011
		3012	if (major < 2
		3013	|| (major == 2 && minor < 6)
		3014	|| (major == 2 && minor == 6 && micro < 25))
		3015	return;
		3016
		3017	fs_2625 = 1;
		3018	}
		3019
		3020	inline_size int
		3021	infy_newfd (void)
		3022	{
		3023	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3024	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3025	if (fd >= 0)
		3026	return fd;
		3027	#endif
		3028	return inotify_init ();
		3029	}
		3030
		3031	inline_size void
2324	infy_init (EV_P)	3032	infy_init (EV_P)
2325	{	3033	{
2326	if (fs_fd != -2)	3034	if (fs_fd != -2)
2327	return;	3035	return;
2328		3036
		3037	fs_fd = -1;
		3038
		3039	check_2625 (EV_A);
		3040
2329	fs_fd = inotify_init ();	3041	fs_fd = infy_newfd ();
2330		3042
2331	if (fs_fd >= 0)	3043	if (fs_fd >= 0)
2332	{	3044	{
		3045	fd_intern (fs_fd);
2333	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3046	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2334	ev_set_priority (&fs_w, EV_MAXPRI);	3047	ev_set_priority (&fs_w, EV_MAXPRI);
2335	ev_io_start (EV_A_ &fs_w);	3048	ev_io_start (EV_A_ &fs_w);
		3049	ev_unref (EV_A);
2336	}	3050	}
2337	}	3051	}
2338		3052
2339	void inline_size	3053	inline_size void
2340	infy_fork (EV_P)	3054	infy_fork (EV_P)
2341	{	3055	{
2342	int slot;	3056	int slot;
2343		3057
2344	if (fs_fd < 0)	3058	if (fs_fd < 0)
2345	return;	3059	return;
2346		3060
		3061	ev_ref (EV_A);
		3062	ev_io_stop (EV_A_ &fs_w);
2347	close (fs_fd);	3063	close (fs_fd);
2348	fs_fd = inotify_init ();	3064	fs_fd = infy_newfd ();
		3065
		3066	if (fs_fd >= 0)
		3067	{
		3068	fd_intern (fs_fd);
		3069	ev_io_set (&fs_w, fs_fd, EV_READ);
		3070	ev_io_start (EV_A_ &fs_w);
		3071	ev_unref (EV_A);
		3072	}
2349		3073
2350	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3074	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2351	{	3075	{
2352	WL w_ = fs_hash [slot].head;	3076	WL w_ = fs_hash [slot].head;
2353	fs_hash [slot].head = 0;	3077	fs_hash [slot].head = 0;
…		…
2360	w->wd = -1;	3084	w->wd = -1;
2361		3085
2362	if (fs_fd >= 0)	3086	if (fs_fd >= 0)
2363	infy_add (EV_A_ w); /* re-add, no matter what */	3087	infy_add (EV_A_ w); /* re-add, no matter what */
2364	else	3088	else
		3089	{
		3090	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3091	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2365	ev_timer_start (EV_A_ &w->timer);	3092	ev_timer_again (EV_A_ &w->timer);
		3093	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3094	}
2366	}	3095	}
2367
2368	}	3096	}
2369	}	3097	}
2370		3098
		3099	#endif
		3100
		3101	#ifdef _WIN32
		3102	# define EV_LSTAT(p,b) _stati64 (p, b)
		3103	#else
		3104	# define EV_LSTAT(p,b) lstat (p, b)
2371	#endif	3105	#endif
2372		3106
2373	void	3107	void
2374	ev_stat_stat (EV_P_ ev_stat *w)	3108	ev_stat_stat (EV_P_ ev_stat *w)
2375	{	3109	{
…		…
2382	static void noinline	3116	static void noinline
2383	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3117	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2384	{	3118	{
2385	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	3119	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2386		3120
2387	/* we copy this here each the time so that */	3121	ev_statdata prev = w->attr;
2388	/* prev has the old value when the callback gets invoked */
2389	w->prev = w->attr;
2390	ev_stat_stat (EV_A_ w);	3122	ev_stat_stat (EV_A_ w);
2391		3123
2392	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3124	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2393	if (	3125	if (
2394	w->prev.st_dev != w->attr.st_dev	3126	prev.st_dev != w->attr.st_dev
2395	|| w->prev.st_ino != w->attr.st_ino	3127	|| prev.st_ino != w->attr.st_ino
2396	|| w->prev.st_mode != w->attr.st_mode	3128	|| prev.st_mode != w->attr.st_mode
2397	|| w->prev.st_nlink != w->attr.st_nlink	3129	|| prev.st_nlink != w->attr.st_nlink
2398	|| w->prev.st_uid != w->attr.st_uid	3130	|| prev.st_uid != w->attr.st_uid
2399	|| w->prev.st_gid != w->attr.st_gid	3131	|| prev.st_gid != w->attr.st_gid
2400	|| w->prev.st_rdev != w->attr.st_rdev	3132	|| prev.st_rdev != w->attr.st_rdev
2401	|| w->prev.st_size != w->attr.st_size	3133	|| prev.st_size != w->attr.st_size
2402	|| w->prev.st_atime != w->attr.st_atime	3134	|| prev.st_atime != w->attr.st_atime
2403	|| w->prev.st_mtime != w->attr.st_mtime	3135	|| prev.st_mtime != w->attr.st_mtime
2404	|| w->prev.st_ctime != w->attr.st_ctime	3136	|| prev.st_ctime != w->attr.st_ctime
2405	) {	3137	) {
		3138	/* we only update w->prev on actual differences */
		3139	/* in case we test more often than invoke the callback, */
		3140	/* to ensure that prev is always different to attr */
		3141	w->prev = prev;
		3142
2406	#if EV_USE_INOTIFY	3143	#if EV_USE_INOTIFY
		3144	if (fs_fd >= 0)
		3145	{
2407	infy_del (EV_A_ w);	3146	infy_del (EV_A_ w);
2408	infy_add (EV_A_ w);	3147	infy_add (EV_A_ w);
2409	ev_stat_stat (EV_A_ w); /* avoid race... */	3148	ev_stat_stat (EV_A_ w); /* avoid race... */
		3149	}
2410	#endif	3150	#endif
2411		3151
2412	ev_feed_event (EV_A_ w, EV_STAT);	3152	ev_feed_event (EV_A_ w, EV_STAT);
2413	}	3153	}
2414	}	3154	}
…		…
2417	ev_stat_start (EV_P_ ev_stat *w)	3157	ev_stat_start (EV_P_ ev_stat *w)
2418	{	3158	{
2419	if (expect_false (ev_is_active (w)))	3159	if (expect_false (ev_is_active (w)))
2420	return;	3160	return;
2421		3161
2422	/* since we use memcmp, we need to clear any padding data etc. */
2423	memset (&w->prev, 0, sizeof (ev_statdata));
2424	memset (&w->attr, 0, sizeof (ev_statdata));
2425
2426	ev_stat_stat (EV_A_ w);	3162	ev_stat_stat (EV_A_ w);
2427		3163
		3164	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2428	if (w->interval < MIN_STAT_INTERVAL)	3165	w->interval = MIN_STAT_INTERVAL;
2429	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2430		3166
2431	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3167	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2432	ev_set_priority (&w->timer, ev_priority (w));	3168	ev_set_priority (&w->timer, ev_priority (w));
2433		3169
2434	#if EV_USE_INOTIFY	3170	#if EV_USE_INOTIFY
2435	infy_init (EV_A);	3171	infy_init (EV_A);
2436		3172
2437	if (fs_fd >= 0)	3173	if (fs_fd >= 0)
2438	infy_add (EV_A_ w);	3174	infy_add (EV_A_ w);
2439	else	3175	else
2440	#endif	3176	#endif
		3177	{
2441	ev_timer_start (EV_A_ &w->timer);	3178	ev_timer_again (EV_A_ &w->timer);
		3179	ev_unref (EV_A);
		3180	}
2442		3181
2443	ev_start (EV_A_ (W)w, 1);	3182	ev_start (EV_A_ (W)w, 1);
		3183
		3184	EV_FREQUENT_CHECK;
2444	}	3185	}
2445		3186
2446	void	3187	void
2447	ev_stat_stop (EV_P_ ev_stat *w)	3188	ev_stat_stop (EV_P_ ev_stat *w)
2448	{	3189	{
2449	clear_pending (EV_A_ (W)w);	3190	clear_pending (EV_A_ (W)w);
2450	if (expect_false (!ev_is_active (w)))	3191	if (expect_false (!ev_is_active (w)))
2451	return;	3192	return;
2452		3193
		3194	EV_FREQUENT_CHECK;
		3195
2453	#if EV_USE_INOTIFY	3196	#if EV_USE_INOTIFY
2454	infy_del (EV_A_ w);	3197	infy_del (EV_A_ w);
2455	#endif	3198	#endif
		3199
		3200	if (ev_is_active (&w->timer))
		3201	{
		3202	ev_ref (EV_A);
2456	ev_timer_stop (EV_A_ &w->timer);	3203	ev_timer_stop (EV_A_ &w->timer);
		3204	}
2457		3205
2458	ev_stop (EV_A_ (W)w);	3206	ev_stop (EV_A_ (W)w);
		3207
		3208	EV_FREQUENT_CHECK;
2459	}	3209	}
2460	#endif	3210	#endif
2461		3211
2462	#if EV_IDLE_ENABLE	3212	#if EV_IDLE_ENABLE
2463	void	3213	void
…		…
2465	{	3215	{
2466	if (expect_false (ev_is_active (w)))	3216	if (expect_false (ev_is_active (w)))
2467	return;	3217	return;
2468		3218
2469	pri_adjust (EV_A_ (W)w);	3219	pri_adjust (EV_A_ (W)w);
		3220
		3221	EV_FREQUENT_CHECK;
2470		3222
2471	{	3223	{
2472	int active = ++idlecnt [ABSPRI (w)];	3224	int active = ++idlecnt [ABSPRI (w)];
2473		3225
2474	++idleall;	3226	++idleall;
2475	ev_start (EV_A_ (W)w, active);	3227	ev_start (EV_A_ (W)w, active);
2476		3228
2477	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	3229	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2478	idles [ABSPRI (w)][active - 1] = w;	3230	idles [ABSPRI (w)][active - 1] = w;
2479	}	3231	}
		3232
		3233	EV_FREQUENT_CHECK;
2480	}	3234	}
2481		3235
2482	void	3236	void
2483	ev_idle_stop (EV_P_ ev_idle *w)	3237	ev_idle_stop (EV_P_ ev_idle *w)
2484	{	3238	{
2485	clear_pending (EV_A_ (W)w);	3239	clear_pending (EV_A_ (W)w);
2486	if (expect_false (!ev_is_active (w)))	3240	if (expect_false (!ev_is_active (w)))
2487	return;	3241	return;
2488		3242
		3243	EV_FREQUENT_CHECK;
		3244
2489	{	3245	{
2490	int active = ev_active (w);	3246	int active = ev_active (w);
2491		3247
2492	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	3248	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2493	ev_active (idles [ABSPRI (w)][active - 1]) = active;	3249	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2494		3250
2495	ev_stop (EV_A_ (W)w);	3251	ev_stop (EV_A_ (W)w);
2496	--idleall;	3252	--idleall;
2497	}	3253	}
		3254
		3255	EV_FREQUENT_CHECK;
2498	}	3256	}
2499	#endif	3257	#endif
2500		3258
2501	void	3259	void
2502	ev_prepare_start (EV_P_ ev_prepare *w)	3260	ev_prepare_start (EV_P_ ev_prepare *w)
2503	{	3261	{
2504	if (expect_false (ev_is_active (w)))	3262	if (expect_false (ev_is_active (w)))
2505	return;	3263	return;
		3264
		3265	EV_FREQUENT_CHECK;
2506		3266
2507	ev_start (EV_A_ (W)w, ++preparecnt);	3267	ev_start (EV_A_ (W)w, ++preparecnt);
2508	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	3268	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2509	prepares [preparecnt - 1] = w;	3269	prepares [preparecnt - 1] = w;
		3270
		3271	EV_FREQUENT_CHECK;
2510	}	3272	}
2511		3273
2512	void	3274	void
2513	ev_prepare_stop (EV_P_ ev_prepare *w)	3275	ev_prepare_stop (EV_P_ ev_prepare *w)
2514	{	3276	{
2515	clear_pending (EV_A_ (W)w);	3277	clear_pending (EV_A_ (W)w);
2516	if (expect_false (!ev_is_active (w)))	3278	if (expect_false (!ev_is_active (w)))
2517	return;	3279	return;
2518		3280
		3281	EV_FREQUENT_CHECK;
		3282
2519	{	3283	{
2520	int active = ev_active (w);	3284	int active = ev_active (w);
2521		3285
2522	prepares [active - 1] = prepares [--preparecnt];	3286	prepares [active - 1] = prepares [--preparecnt];
2523	ev_active (prepares [active - 1]) = active;	3287	ev_active (prepares [active - 1]) = active;
2524	}	3288	}
2525		3289
2526	ev_stop (EV_A_ (W)w);	3290	ev_stop (EV_A_ (W)w);
		3291
		3292	EV_FREQUENT_CHECK;
2527	}	3293	}
2528		3294
2529	void	3295	void
2530	ev_check_start (EV_P_ ev_check *w)	3296	ev_check_start (EV_P_ ev_check *w)
2531	{	3297	{
2532	if (expect_false (ev_is_active (w)))	3298	if (expect_false (ev_is_active (w)))
2533	return;	3299	return;
		3300
		3301	EV_FREQUENT_CHECK;
2534		3302
2535	ev_start (EV_A_ (W)w, ++checkcnt);	3303	ev_start (EV_A_ (W)w, ++checkcnt);
2536	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	3304	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2537	checks [checkcnt - 1] = w;	3305	checks [checkcnt - 1] = w;
		3306
		3307	EV_FREQUENT_CHECK;
2538	}	3308	}
2539		3309
2540	void	3310	void
2541	ev_check_stop (EV_P_ ev_check *w)	3311	ev_check_stop (EV_P_ ev_check *w)
2542	{	3312	{
2543	clear_pending (EV_A_ (W)w);	3313	clear_pending (EV_A_ (W)w);
2544	if (expect_false (!ev_is_active (w)))	3314	if (expect_false (!ev_is_active (w)))
2545	return;	3315	return;
2546		3316
		3317	EV_FREQUENT_CHECK;
		3318
2547	{	3319	{
2548	int active = ev_active (w);	3320	int active = ev_active (w);
2549		3321
2550	checks [active - 1] = checks [--checkcnt];	3322	checks [active - 1] = checks [--checkcnt];
2551	ev_active (checks [active - 1]) = active;	3323	ev_active (checks [active - 1]) = active;
2552	}	3324	}
2553		3325
2554	ev_stop (EV_A_ (W)w);	3326	ev_stop (EV_A_ (W)w);
		3327
		3328	EV_FREQUENT_CHECK;
2555	}	3329	}
2556		3330
2557	#if EV_EMBED_ENABLE	3331	#if EV_EMBED_ENABLE
2558	void noinline	3332	void noinline
2559	ev_embed_sweep (EV_P_ ev_embed *w)	3333	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2576	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3350	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2577	{	3351	{
2578	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3352	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2579		3353
2580	{	3354	{
2581	struct ev_loop *loop = w->other;	3355	EV_P = w->other;
2582		3356
2583	while (fdchangecnt)	3357	while (fdchangecnt)
2584	{	3358	{
2585	fd_reify (EV_A);	3359	fd_reify (EV_A);
2586	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3360	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2587	}	3361	}
2588	}	3362	}
2589	}	3363	}
2590		3364
		3365	static void
		3366	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3367	{
		3368	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3369
		3370	ev_embed_stop (EV_A_ w);
		3371
		3372	{
		3373	EV_P = w->other;
		3374
		3375	ev_loop_fork (EV_A);
		3376	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3377	}
		3378
		3379	ev_embed_start (EV_A_ w);
		3380	}
		3381
2591	#if 0	3382	#if 0
2592	static void	3383	static void
2593	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3384	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2594	{	3385	{
2595	ev_idle_stop (EV_A_ idle);	3386	ev_idle_stop (EV_A_ idle);
…		…
2601	{	3392	{
2602	if (expect_false (ev_is_active (w)))	3393	if (expect_false (ev_is_active (w)))
2603	return;	3394	return;
2604		3395
2605	{	3396	{
2606	struct ev_loop *loop = w->other;	3397	EV_P = w->other;
2607	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3398	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2608	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3399	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2609	}	3400	}
		3401
		3402	EV_FREQUENT_CHECK;
2610		3403
2611	ev_set_priority (&w->io, ev_priority (w));	3404	ev_set_priority (&w->io, ev_priority (w));
2612	ev_io_start (EV_A_ &w->io);	3405	ev_io_start (EV_A_ &w->io);
2613		3406
2614	ev_prepare_init (&w->prepare, embed_prepare_cb);	3407	ev_prepare_init (&w->prepare, embed_prepare_cb);
2615	ev_set_priority (&w->prepare, EV_MINPRI);	3408	ev_set_priority (&w->prepare, EV_MINPRI);
2616	ev_prepare_start (EV_A_ &w->prepare);	3409	ev_prepare_start (EV_A_ &w->prepare);
2617		3410
		3411	ev_fork_init (&w->fork, embed_fork_cb);
		3412	ev_fork_start (EV_A_ &w->fork);
		3413
2618	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3414	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2619		3415
2620	ev_start (EV_A_ (W)w, 1);	3416	ev_start (EV_A_ (W)w, 1);
		3417
		3418	EV_FREQUENT_CHECK;
2621	}	3419	}
2622		3420
2623	void	3421	void
2624	ev_embed_stop (EV_P_ ev_embed *w)	3422	ev_embed_stop (EV_P_ ev_embed *w)
2625	{	3423	{
2626	clear_pending (EV_A_ (W)w);	3424	clear_pending (EV_A_ (W)w);
2627	if (expect_false (!ev_is_active (w)))	3425	if (expect_false (!ev_is_active (w)))
2628	return;	3426	return;
2629		3427
		3428	EV_FREQUENT_CHECK;
		3429
2630	ev_io_stop (EV_A_ &w->io);	3430	ev_io_stop (EV_A_ &w->io);
2631	ev_prepare_stop (EV_A_ &w->prepare);	3431	ev_prepare_stop (EV_A_ &w->prepare);
		3432	ev_fork_stop (EV_A_ &w->fork);
2632		3433
2633	ev_stop (EV_A_ (W)w);	3434	ev_stop (EV_A_ (W)w);
		3435
		3436	EV_FREQUENT_CHECK;
2634	}	3437	}
2635	#endif	3438	#endif
2636		3439
2637	#if EV_FORK_ENABLE	3440	#if EV_FORK_ENABLE
2638	void	3441	void
2639	ev_fork_start (EV_P_ ev_fork *w)	3442	ev_fork_start (EV_P_ ev_fork *w)
2640	{	3443	{
2641	if (expect_false (ev_is_active (w)))	3444	if (expect_false (ev_is_active (w)))
2642	return;	3445	return;
		3446
		3447	EV_FREQUENT_CHECK;
2643		3448
2644	ev_start (EV_A_ (W)w, ++forkcnt);	3449	ev_start (EV_A_ (W)w, ++forkcnt);
2645	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3450	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2646	forks [forkcnt - 1] = w;	3451	forks [forkcnt - 1] = w;
		3452
		3453	EV_FREQUENT_CHECK;
2647	}	3454	}
2648		3455
2649	void	3456	void
2650	ev_fork_stop (EV_P_ ev_fork *w)	3457	ev_fork_stop (EV_P_ ev_fork *w)
2651	{	3458	{
2652	clear_pending (EV_A_ (W)w);	3459	clear_pending (EV_A_ (W)w);
2653	if (expect_false (!ev_is_active (w)))	3460	if (expect_false (!ev_is_active (w)))
2654	return;	3461	return;
2655		3462
		3463	EV_FREQUENT_CHECK;
		3464
2656	{	3465	{
2657	int active = ev_active (w);	3466	int active = ev_active (w);
2658		3467
2659	forks [active - 1] = forks [--forkcnt];	3468	forks [active - 1] = forks [--forkcnt];
2660	ev_active (forks [active - 1]) = active;	3469	ev_active (forks [active - 1]) = active;
2661	}	3470	}
2662		3471
2663	ev_stop (EV_A_ (W)w);	3472	ev_stop (EV_A_ (W)w);
		3473
		3474	EV_FREQUENT_CHECK;
2664	}	3475	}
2665	#endif	3476	#endif
2666		3477
2667	#if EV_ASYNC_ENABLE	3478	#if EV_ASYNC_ENABLE
2668	void	3479	void
…		…
2670	{	3481	{
2671	if (expect_false (ev_is_active (w)))	3482	if (expect_false (ev_is_active (w)))
2672	return;	3483	return;
2673		3484
2674	evpipe_init (EV_A);	3485	evpipe_init (EV_A);
		3486
		3487	EV_FREQUENT_CHECK;
2675		3488
2676	ev_start (EV_A_ (W)w, ++asynccnt);	3489	ev_start (EV_A_ (W)w, ++asynccnt);
2677	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3490	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2678	asyncs [asynccnt - 1] = w;	3491	asyncs [asynccnt - 1] = w;
		3492
		3493	EV_FREQUENT_CHECK;
2679	}	3494	}
2680		3495
2681	void	3496	void
2682	ev_async_stop (EV_P_ ev_async *w)	3497	ev_async_stop (EV_P_ ev_async *w)
2683	{	3498	{
2684	clear_pending (EV_A_ (W)w);	3499	clear_pending (EV_A_ (W)w);
2685	if (expect_false (!ev_is_active (w)))	3500	if (expect_false (!ev_is_active (w)))
2686	return;	3501	return;
2687		3502
		3503	EV_FREQUENT_CHECK;
		3504
2688	{	3505	{
2689	int active = ev_active (w);	3506	int active = ev_active (w);
2690		3507
2691	asyncs [active - 1] = asyncs [--asynccnt];	3508	asyncs [active - 1] = asyncs [--asynccnt];
2692	ev_active (asyncs [active - 1]) = active;	3509	ev_active (asyncs [active - 1]) = active;
2693	}	3510	}
2694		3511
2695	ev_stop (EV_A_ (W)w);	3512	ev_stop (EV_A_ (W)w);
		3513
		3514	EV_FREQUENT_CHECK;
2696	}	3515	}
2697		3516
2698	void	3517	void
2699	ev_async_send (EV_P_ ev_async *w)	3518	ev_async_send (EV_P_ ev_async *w)
2700	{	3519	{
2701	w->sent = 1;	3520	w->sent = 1;
2702	evpipe_write (EV_A_ &gotasync);	3521	evpipe_write (EV_A_ &async_pending);
2703	}	3522	}
2704	#endif	3523	#endif
2705		3524
2706	/*****************************************************************************/	3525	/*****************************************************************************/
2707		3526
…		…
2717	once_cb (EV_P_ struct ev_once *once, int revents)	3536	once_cb (EV_P_ struct ev_once *once, int revents)
2718	{	3537	{
2719	void (*cb)(int revents, void *arg) = once->cb;	3538	void (*cb)(int revents, void *arg) = once->cb;
2720	void *arg = once->arg;	3539	void *arg = once->arg;
2721		3540
2722	ev_io_stop (EV_A_ &once->io);	3541	ev_io_stop (EV_A_ &once->io);
2723	ev_timer_stop (EV_A_ &once->to);	3542	ev_timer_stop (EV_A_ &once->to);
2724	ev_free (once);	3543	ev_free (once);
2725		3544
2726	cb (revents, arg);	3545	cb (revents, arg);
2727	}	3546	}
2728		3547
2729	static void	3548	static void
2730	once_cb_io (EV_P_ ev_io *w, int revents)	3549	once_cb_io (EV_P_ ev_io *w, int revents)
2731	{	3550	{
2732	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3551	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3552
		3553	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2733	}	3554	}
2734		3555
2735	static void	3556	static void
2736	once_cb_to (EV_P_ ev_timer *w, int revents)	3557	once_cb_to (EV_P_ ev_timer *w, int revents)
2737	{	3558	{
2738	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3559	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3560
		3561	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2739	}	3562	}
2740		3563
2741	void	3564	void
2742	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3565	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2743	{	3566	{
…		…
2765	ev_timer_set (&once->to, timeout, 0.);	3588	ev_timer_set (&once->to, timeout, 0.);
2766	ev_timer_start (EV_A_ &once->to);	3589	ev_timer_start (EV_A_ &once->to);
2767	}	3590	}
2768	}	3591	}
2769		3592
		3593	/*****************************************************************************/
		3594
		3595	#if EV_WALK_ENABLE
		3596	void
		3597	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3598	{
		3599	int i, j;
		3600	ev_watcher_list *wl, *wn;
		3601
		3602	if (types & (EV_IO | EV_EMBED))
		3603	for (i = 0; i < anfdmax; ++i)
		3604	for (wl = anfds [i].head; wl; )
		3605	{
		3606	wn = wl->next;
		3607
		3608	#if EV_EMBED_ENABLE
		3609	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3610	{
		3611	if (types & EV_EMBED)
		3612	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3613	}
		3614	else
		3615	#endif
		3616	#if EV_USE_INOTIFY
		3617	if (ev_cb ((ev_io *)wl) == infy_cb)
		3618	;
		3619	else
		3620	#endif
		3621	if ((ev_io *)wl != &pipe_w)
		3622	if (types & EV_IO)
		3623	cb (EV_A_ EV_IO, wl);
		3624
		3625	wl = wn;
		3626	}
		3627
		3628	if (types & (EV_TIMER | EV_STAT))
		3629	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3630	#if EV_STAT_ENABLE
		3631	/*TODO: timer is not always active*/
		3632	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3633	{
		3634	if (types & EV_STAT)
		3635	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3636	}
		3637	else
		3638	#endif
		3639	if (types & EV_TIMER)
		3640	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3641
		3642	#if EV_PERIODIC_ENABLE
		3643	if (types & EV_PERIODIC)
		3644	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3645	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3646	#endif
		3647
		3648	#if EV_IDLE_ENABLE
		3649	if (types & EV_IDLE)
		3650	for (j = NUMPRI; i--; )
		3651	for (i = idlecnt [j]; i--; )
		3652	cb (EV_A_ EV_IDLE, idles [j][i]);
		3653	#endif
		3654
		3655	#if EV_FORK_ENABLE
		3656	if (types & EV_FORK)
		3657	for (i = forkcnt; i--; )
		3658	if (ev_cb (forks [i]) != embed_fork_cb)
		3659	cb (EV_A_ EV_FORK, forks [i]);
		3660	#endif
		3661
		3662	#if EV_ASYNC_ENABLE
		3663	if (types & EV_ASYNC)
		3664	for (i = asynccnt; i--; )
		3665	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3666	#endif
		3667
		3668	if (types & EV_PREPARE)
		3669	for (i = preparecnt; i--; )
		3670	#if EV_EMBED_ENABLE
		3671	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3672	#endif
		3673	cb (EV_A_ EV_PREPARE, prepares [i]);
		3674
		3675	if (types & EV_CHECK)
		3676	for (i = checkcnt; i--; )
		3677	cb (EV_A_ EV_CHECK, checks [i]);
		3678
		3679	if (types & EV_SIGNAL)
		3680	for (i = 0; i < EV_NSIG - 1; ++i)
		3681	for (wl = signals [i].head; wl; )
		3682	{
		3683	wn = wl->next;
		3684	cb (EV_A_ EV_SIGNAL, wl);
		3685	wl = wn;
		3686	}
		3687
		3688	if (types & EV_CHILD)
		3689	for (i = EV_PID_HASHSIZE; i--; )
		3690	for (wl = childs [i]; wl; )
		3691	{
		3692	wn = wl->next;
		3693	cb (EV_A_ EV_CHILD, wl);
		3694	wl = wn;
		3695	}
		3696	/* EV_STAT 0x00001000 /* stat data changed */
		3697	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3698	}
		3699	#endif
		3700
2770	#if EV_MULTIPLICITY	3701	#if EV_MULTIPLICITY
2771	#include "ev_wrap.h"	3702	#include "ev_wrap.h"
2772	#endif	3703	#endif
2773		3704
2774	#ifdef __cplusplus	3705	#ifdef __cplusplus

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