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

Comparing libev/ev.c (file contents):
Revision 1.35 by root, Thu Nov 1 11:55:54 2007 UTC vs.
Revision 1.53 by root, Sat Nov 3 22:31:11 2007 UTC

…		…
1	/*	1	/*
		2	* libev event processing core, watcher management
		3	*
2	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
3	* All rights reserved.	5	* All rights reserved.
4	*	6	*
5	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions are	8	* modification, are permitted provided that the following conditions are
24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28	*/	30	*/
29	#if EV_USE_CONFIG_H	31	#ifndef EV_STANDALONE
30	# include "config.h"	32	# include "config.h"
31	#endif	33	#endif
32		34
33	#include <math.h>	35	#include <math.h>
34	#include <stdlib.h>	36	#include <stdlib.h>
…		…
40	#include <stdio.h>	42	#include <stdio.h>
41		43
42	#include <assert.h>	44	#include <assert.h>
43	#include <errno.h>	45	#include <errno.h>
44	#include <sys/types.h>	46	#include <sys/types.h>
		47	#ifndef WIN32
45	#include <sys/wait.h>	48	# include <sys/wait.h>
		49	#endif
46	#include <sys/time.h>	50	#include <sys/time.h>
47	#include <time.h>	51	#include <time.h>
48		52
		53	/**/
		54
49	#ifndef EV_USE_MONOTONIC	55	#ifndef EV_USE_MONOTONIC
50	# ifdef CLOCK_MONOTONIC
51	# define EV_USE_MONOTONIC 1	56	# define EV_USE_MONOTONIC 1
52	# endif
53	#endif	57	#endif
54		58
55	#ifndef EV_USE_SELECT	59	#ifndef EV_USE_SELECT
56	# define EV_USE_SELECT 1	60	# define EV_USE_SELECT 1
57	#endif	61	#endif
58		62
		63	#ifndef EV_USEV_POLL
		64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */
		65	#endif
		66
59	#ifndef EV_USE_EPOLL	67	#ifndef EV_USE_EPOLL
60	# define EV_USE_EPOLL 0	68	# define EV_USE_EPOLL 0
61	#endif	69	#endif
62		70
		71	#ifndef EV_USE_KQUEUE
		72	# define EV_USE_KQUEUE 0
		73	#endif
		74
		75	#ifndef EV_USE_REALTIME
		76	# define EV_USE_REALTIME 1
		77	#endif
		78
		79	/**/
		80
		81	#ifndef CLOCK_MONOTONIC
		82	# undef EV_USE_MONOTONIC
		83	# define EV_USE_MONOTONIC 0
		84	#endif
		85
63	#ifndef CLOCK_REALTIME	86	#ifndef CLOCK_REALTIME
		87	# undef EV_USE_REALTIME
64	# define EV_USE_REALTIME 0	88	# define EV_USE_REALTIME 0
65	#endif	89	#endif
66	#ifndef EV_USE_REALTIME	90
67	# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */	91	/**/
68	#endif
69		92
70	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
71	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detetc time jumps) */	94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
72	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
73	#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */	96	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
74		97
75	#include "ev.h"	98	#include "ev.h"
		99
		100	#if __GNUC__ >= 3
		101	# define expect(expr,value) __builtin_expect ((expr),(value))
		102	# define inline inline
		103	#else
		104	# define expect(expr,value) (expr)
		105	# define inline static
		106	#endif
		107
		108	#define expect_false(expr) expect ((expr) != 0, 0)
		109	#define expect_true(expr) expect ((expr) != 0, 1)
		110
		111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
76		113
77	typedef struct ev_watcher *W;	114	typedef struct ev_watcher *W;
78	typedef struct ev_watcher_list *WL;	115	typedef struct ev_watcher_list *WL;
79	typedef struct ev_watcher_time *WT;	116	typedef struct ev_watcher_time *WT;
80		117
81	static ev_tstamp now, diff; /* monotonic clock */
82	ev_tstamp ev_now;
83	int ev_method;
84
85	static int have_monotonic; /* runtime */
86
87	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
88	static void (*method_modify)(int fd, int oev, int nev);
89	static void (*method_poll)(ev_tstamp timeout);
90
91	/*****************************************************************************/	118	/*****************************************************************************/
92		119
93	ev_tstamp	120	typedef struct
		121	{
		122	struct ev_watcher_list *head;
		123	unsigned char events;
		124	unsigned char reify;
		125	} ANFD;
		126
		127	typedef struct
		128	{
		129	W w;
		130	int events;
		131	} ANPENDING;
		132
		133	#ifdef EV_MULTIPLICITY
		134	struct ev_loop
		135	{
		136	# define VAR(name,decl) decl
		137	# include "ev_vars.h"
		138	};
		139	#else
		140	# define VAR(name,decl) static decl
		141	# include "ev_vars.h"
		142	#endif
		143	#undef VAR
		144
		145	/*****************************************************************************/
		146
		147	inline ev_tstamp
94	ev_time (void)	148	ev_time (void)
95	{	149	{
96	#if EV_USE_REALTIME	150	#if EV_USE_REALTIME
97	struct timespec ts;	151	struct timespec ts;
98	clock_gettime (CLOCK_REALTIME, &ts);	152	clock_gettime (CLOCK_REALTIME, &ts);
…		…
102	gettimeofday (&tv, 0);	156	gettimeofday (&tv, 0);
103	return tv.tv_sec + tv.tv_usec * 1e-6;	157	return tv.tv_sec + tv.tv_usec * 1e-6;
104	#endif	158	#endif
105	}	159	}
106		160
107	static ev_tstamp	161	inline ev_tstamp
108	get_clock (void)	162	get_clock (void)
109	{	163	{
110	#if EV_USE_MONOTONIC	164	#if EV_USE_MONOTONIC
111	if (have_monotonic)	165	if (expect_true (have_monotonic))
112	{	166	{
113	struct timespec ts;	167	struct timespec ts;
114	clock_gettime (CLOCK_MONOTONIC, &ts);	168	clock_gettime (CLOCK_MONOTONIC, &ts);
115	return ts.tv_sec + ts.tv_nsec * 1e-9;	169	return ts.tv_sec + ts.tv_nsec * 1e-9;
116	}	170	}
117	#endif	171	#endif
118		172
119	return ev_time ();	173	return ev_time ();
120	}	174	}
121		175
		176	ev_tstamp
		177	ev_now (EV_P)
		178	{
		179	return rt_now;
		180	}
		181
122	#define array_roundsize(base,n) ((n) \| 4 & ~3)	182	#define array_roundsize(base,n) ((n) \| 4 & ~3)
123		183
124	#define array_needsize(base,cur,cnt,init) \	184	#define array_needsize(base,cur,cnt,init) \
125	if ((cnt) > cur) \	185	if (expect_false ((cnt) > cur)) \
126	{ \	186	{ \
127	int newcnt = cur; \	187	int newcnt = cur; \
128	do \	188	do \
129	{ \	189	{ \
130	newcnt = array_roundsize (base, newcnt << 1); \	190	newcnt = array_roundsize (base, newcnt << 1); \
…		…
136	cur = newcnt; \	196	cur = newcnt; \
137	}	197	}
138		198
139	/*****************************************************************************/	199	/*****************************************************************************/
140		200
141	typedef struct
142	{
143	struct ev_io *head;
144	unsigned char events;
145	unsigned char reify;
146	} ANFD;
147
148	static ANFD *anfds;
149	static int anfdmax;
150
151	static void	201	static void
152	anfds_init (ANFD *base, int count)	202	anfds_init (ANFD *base, int count)
153	{	203	{
154	while (count--)	204	while (count--)
155	{	205	{
…		…
159		209
160	++base;	210	++base;
161	}	211	}
162	}	212	}
163		213
164	typedef struct
165	{
166	W w;
167	int events;
168	} ANPENDING;
169
170	static ANPENDING *pendings;
171	static int pendingmax, pendingcnt;
172
173	static void	214	static void
174	event (W w, int events)	215	event (EV_P_ W w, int events)
175	{	216	{
176	if (w->pending)	217	if (w->pending)
177	{	218	{
178	pendings [w->pending - 1].events \|= events;	219	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
179	return;	220	return;
180	}	221	}
181		222
182	w->pending = ++pendingcnt;	223	w->pending = ++pendingcnt [ABSPRI (w)];
183	array_needsize (pendings, pendingmax, pendingcnt, );	224	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
184	pendings [pendingcnt - 1].w = w;	225	pendings [ABSPRI (w)][w->pending - 1].w = w;
185	pendings [pendingcnt - 1].events = events;	226	pendings [ABSPRI (w)][w->pending - 1].events = events;
186	}	227	}
187		228
188	static void	229	static void
189	queue_events (W *events, int eventcnt, int type)	230	queue_events (EV_P_ W *events, int eventcnt, int type)
190	{	231	{
191	int i;	232	int i;
192		233
193	for (i = 0; i < eventcnt; ++i)	234	for (i = 0; i < eventcnt; ++i)
194	event (events [i], type);	235	event (EV_A_ events [i], type);
195	}	236	}
196		237
197	static void	238	static void
198	fd_event (int fd, int events)	239	fd_event (EV_P_ int fd, int events)
199	{	240	{
200	ANFD *anfd = anfds + fd;	241	ANFD *anfd = anfds + fd;
201	struct ev_io *w;	242	struct ev_io *w;
202		243
203	for (w = anfd->head; w; w = w->next)	244	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
204	{	245	{
205	int ev = w->events & events;	246	int ev = w->events & events;
206		247
207	if (ev)	248	if (ev)
208	event ((W)w, ev);	249	event (EV_A_ (W)w, ev);
209	}	250	}
210	}	251	}
211		252
212	/*****************************************************************************/	253	/*****************************************************************************/
213		254
214	static int *fdchanges;
215	static int fdchangemax, fdchangecnt;
216
217	static void	255	static void
218	fd_reify (void)	256	fd_reify (EV_P)
219	{	257	{
220	int i;	258	int i;
221		259
222	for (i = 0; i < fdchangecnt; ++i)	260	for (i = 0; i < fdchangecnt; ++i)
223	{	261	{
…		…
225	ANFD *anfd = anfds + fd;	263	ANFD *anfd = anfds + fd;
226	struct ev_io *w;	264	struct ev_io *w;
227		265
228	int events = 0;	266	int events = 0;
229		267
230	for (w = anfd->head; w; w = w->next)	268	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
231	events \|= w->events;	269	events \|= w->events;
232		270
233	anfd->reify = 0;	271	anfd->reify = 0;
234		272
235	if (anfd->events != events)	273	if (anfd->events != events)
236	{	274	{
237	method_modify (fd, anfd->events, events);	275	method_modify (EV_A_ fd, anfd->events, events);
238	anfd->events = events;	276	anfd->events = events;
239	}	277	}
240	}	278	}
241		279
242	fdchangecnt = 0;	280	fdchangecnt = 0;
243	}	281	}
244		282
245	static void	283	static void
246	fd_change (int fd)	284	fd_change (EV_P_ int fd)
247	{	285	{
248	if (anfds [fd].reify \|\| fdchangecnt < 0)	286	if (anfds [fd].reify \|\| fdchangecnt < 0)
249	return;	287	return;
250		288
251	anfds [fd].reify = 1;	289	anfds [fd].reify = 1;
…		…
253	++fdchangecnt;	291	++fdchangecnt;
254	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	292	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
255	fdchanges [fdchangecnt - 1] = fd;	293	fdchanges [fdchangecnt - 1] = fd;
256	}	294	}
257		295
		296	static void
		297	fd_kill (EV_P_ int fd)
		298	{
		299	struct ev_io *w;
		300
		301	while ((w = (struct ev_io *)anfds [fd].head))
		302	{
		303	ev_io_stop (EV_A_ w);
		304	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
		305	}
		306	}
		307
258	/* called on EBADF to verify fds */	308	/* called on EBADF to verify fds */
259	static void	309	static void
260	fd_recheck (void)	310	fd_ebadf (EV_P)
261	{	311	{
262	int fd;	312	int fd;
263		313
264	for (fd = 0; fd < anfdmax; ++fd)	314	for (fd = 0; fd < anfdmax; ++fd)
265	if (anfds [fd].events)	315	if (anfds [fd].events)
266	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
267	while (anfds [fd].head)	317	fd_kill (EV_A_ fd);
		318	}
		319
		320	/* called on ENOMEM in select/poll to kill some fds and retry */
		321	static void
		322	fd_enomem (EV_P)
		323	{
		324	int fd = anfdmax;
		325
		326	while (fd--)
		327	if (anfds [fd].events)
268	{	328	{
269	ev_io_stop (anfds [fd].head);	329	close (fd);
270	event ((W)anfds [fd].head, EV_ERROR \| EV_READ \| EV_WRITE);	330	fd_kill (EV_A_ fd);
		331	return;
271	}	332	}
272	}	333	}
273		334
274	/*****************************************************************************/	335	/*****************************************************************************/
275
276	static struct ev_timer **timers;
277	static int timermax, timercnt;
278
279	static struct ev_periodic **periodics;
280	static int periodicmax, periodiccnt;
281		336
282	static void	337	static void
283	upheap (WT *timers, int k)	338	upheap (WT *timers, int k)
284	{	339	{
285	WT w = timers [k];	340	WT w = timers [k];
…		…
322		377
323	/*****************************************************************************/	378	/*****************************************************************************/
324		379
325	typedef struct	380	typedef struct
326	{	381	{
327	struct ev_signal *head;	382	struct ev_watcher_list *head;
328	sig_atomic_t volatile gotsig;	383	sig_atomic_t volatile gotsig;
329	} ANSIG;	384	} ANSIG;
330		385
331	static ANSIG *signals;	386	static ANSIG *signals;
332	static int signalmax;	387	static int signalmax;
333		388
334	static int sigpipe [2];	389	static int sigpipe [2];
335	static sig_atomic_t volatile gotsig;	390	static sig_atomic_t volatile gotsig;
336	static struct ev_io sigev;
337		391
338	static void	392	static void
339	signals_init (ANSIG *base, int count)	393	signals_init (ANSIG *base, int count)
340	{	394	{
341	while (count--)	395	while (count--)
…		…
352	{	406	{
353	signals [signum - 1].gotsig = 1;	407	signals [signum - 1].gotsig = 1;
354		408
355	if (!gotsig)	409	if (!gotsig)
356	{	410	{
		411	int old_errno = errno;
357	gotsig = 1;	412	gotsig = 1;
358	write (sigpipe [1], &signum, 1);	413	write (sigpipe [1], &signum, 1);
		414	errno = old_errno;
359	}	415	}
360	}	416	}
361		417
362	static void	418	static void
363	sigcb (struct ev_io *iow, int revents)	419	sigcb (EV_P_ struct ev_io *iow, int revents)
364	{	420	{
365	struct ev_signal *w;	421	struct ev_watcher_list *w;
366	int sig;	422	int signum;
367		423
368	read (sigpipe [0], &revents, 1);	424	read (sigpipe [0], &revents, 1);
369	gotsig = 0;	425	gotsig = 0;
370		426
371	for (sig = signalmax; sig--; )	427	for (signum = signalmax; signum--; )
372	if (signals [sig].gotsig)	428	if (signals [signum].gotsig)
373	{	429	{
374	signals [sig].gotsig = 0;	430	signals [signum].gotsig = 0;
375		431
376	for (w = signals [sig].head; w; w = w->next)	432	for (w = signals [signum].head; w; w = w->next)
377	event ((W)w, EV_SIGNAL);	433	event (EV_A_ (W)w, EV_SIGNAL);
378	}	434	}
379	}	435	}
380		436
381	static void	437	static void
382	siginit (void)	438	siginit (EV_P)
383	{	439	{
		440	#ifndef WIN32
384	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	441	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
385	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	442	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
386		443
387	/* rather than sort out wether we really need nb, set it */	444	/* rather than sort out wether we really need nb, set it */
388	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	445	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
389	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	446	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		447	#endif
390		448
391	ev_io_set (&sigev, sigpipe [0], EV_READ);	449	ev_io_set (&sigev, sigpipe [0], EV_READ);
392	ev_io_start (&sigev);	450	ev_io_start (&sigev);
		451	ev_unref (EV_A); /* child watcher should not keep loop alive */
393	}	452	}
394		453
395	/*****************************************************************************/	454	/*****************************************************************************/
396		455
397	static struct ev_idle **idles;	456	#ifndef WIN32
398	static int idlemax, idlecnt;
399
400	static struct ev_prepare **prepares;
401	static int preparemax, preparecnt;
402
403	static struct ev_check **checks;
404	static int checkmax, checkcnt;
405
406	/*****************************************************************************/
407
408	static struct ev_child *childs [PID_HASHSIZE];
409	static struct ev_signal childev;
410		457
411	#ifndef WCONTINUED	458	#ifndef WCONTINUED
412	# define WCONTINUED 0	459	# define WCONTINUED 0
413	#endif	460	#endif
414		461
415	static void	462	static void
416	childcb (struct ev_signal *sw, int revents)	463	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
417	{	464	{
418	struct ev_child *w;	465	struct ev_child *w;
		466
		467	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		468	if (w->pid == pid \|\| !w->pid)
		469	{
		470	w->priority = sw->priority; /* need to do it now */
		471	w->rpid = pid;
		472	w->rstatus = status;
		473	event (EV_A_ (W)w, EV_CHILD);
		474	}
		475	}
		476
		477	static void
		478	childcb (EV_P_ struct ev_signal *sw, int revents)
		479	{
419	int pid, status;	480	int pid, status;
420		481
421	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	482	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
422	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	483	{
423	if (w->pid == pid \|\| w->pid == -1)	484	/* make sure we are called again until all childs have been reaped */
424	{	485	event (EV_A_ (W)sw, EV_SIGNAL);
425	w->status = status;	486
426	event ((W)w, EV_CHILD);	487	child_reap (EV_A_ sw, pid, pid, status);
427	}	488	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		489	}
428	}	490	}
		491
		492	#endif
429		493
430	/*****************************************************************************/	494	/*****************************************************************************/
431		495
		496	#if EV_USE_KQUEUE
		497	# include "ev_kqueue.c"
		498	#endif
432	#if EV_USE_EPOLL	499	#if EV_USE_EPOLL
433	# include "ev_epoll.c"	500	# include "ev_epoll.c"
434	#endif	501	#endif
		502	#if EV_USEV_POLL
		503	# include "ev_poll.c"
		504	#endif
435	#if EV_USE_SELECT	505	#if EV_USE_SELECT
436	# include "ev_select.c"	506	# include "ev_select.c"
437	#endif	507	#endif
438		508
439	int	509	int
…		…
446	ev_version_minor (void)	516	ev_version_minor (void)
447	{	517	{
448	return EV_VERSION_MINOR;	518	return EV_VERSION_MINOR;
449	}	519	}
450		520
451	int ev_init (int flags)	521	/* return true if we are running with elevated privileges and should ignore env variables */
		522	static int
		523	enable_secure (void)
452	{	524	{
		525	#ifdef WIN32
		526	return 0;
		527	#else
		528	return getuid () != geteuid ()
		529	\|\| getgid () != getegid ();
		530	#endif
		531	}
		532
		533	int
		534	ev_method (EV_P)
		535	{
		536	return method;
		537	}
		538
		539	int
		540	ev_init (EV_P_ int methods)
		541	{
		542	#ifdef EV_MULTIPLICITY
		543	memset (loop, 0, sizeof (struct ev_loop));
		544	#endif
		545
453	if (!ev_method)	546	if (!method)
454	{	547	{
455	#if EV_USE_MONOTONIC	548	#if EV_USE_MONOTONIC
456	{	549	{
457	struct timespec ts;	550	struct timespec ts;
458	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	551	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
459	have_monotonic = 1;	552	have_monotonic = 1;
460	}	553	}
461	#endif	554	#endif
462		555
463	ev_now = ev_time ();	556	rt_now = ev_time ();
464	now = get_clock ();	557	mn_now = get_clock ();
		558	now_floor = mn_now;
465	diff = ev_now - now;	559	diff = rt_now - mn_now;
466		560
467	if (pipe (sigpipe))	561	if (pipe (sigpipe))
468	return 0;	562	return 0;
469		563
		564	if (methods == EVMETHOD_AUTO)
		565	if (!enable_secure () && getenv ("LIBmethodS"))
		566	methods = atoi (getenv ("LIBmethodS"));
		567	else
470	ev_method = EVMETHOD_NONE;	568	methods = EVMETHOD_ANY;
		569
		570	method = 0;
		571	#if EV_USE_KQUEUE
		572	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		573	#endif
471	#if EV_USE_EPOLL	574	#if EV_USE_EPOLL
472	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	575	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
		576	#endif
		577	#if EV_USEV_POLL
		578	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
473	#endif	579	#endif
474	#if EV_USE_SELECT	580	#if EV_USE_SELECT
475	if (ev_method == EVMETHOD_NONE) select_init (flags);	581	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
476	#endif	582	#endif
477		583
478	if (ev_method)	584	if (method)
479	{	585	{
480	ev_watcher_init (&sigev, sigcb);	586	ev_watcher_init (&sigev, sigcb);
		587	ev_set_priority (&sigev, EV_MAXPRI);
481	siginit ();	588	siginit (EV_A);
482		589
		590	#ifndef WIN32
483	ev_signal_init (&childev, childcb, SIGCHLD);	591	ev_signal_init (&childev, childcb, SIGCHLD);
		592	ev_set_priority (&childev, EV_MAXPRI);
484	ev_signal_start (&childev);	593	ev_signal_start (EV_A_ &childev);
		594	ev_unref (EV_A); /* child watcher should not keep loop alive */
		595	#endif
485	}	596	}
486	}	597	}
487		598
488	return ev_method;	599	return method;
489	}	600	}
490		601
491	/*****************************************************************************/	602	/*****************************************************************************/
492		603
493	void	604	void
…		…
504		615
505	void	616	void
506	ev_fork_child (void)	617	ev_fork_child (void)
507	{	618	{
508	#if EV_USE_EPOLL	619	#if EV_USE_EPOLL
509	if (ev_method == EVMETHOD_EPOLL)	620	if (method == EVMETHOD_EPOLL)
510	epoll_postfork_child ();	621	epoll_postfork_child ();
511	#endif	622	#endif
512		623
513	ev_io_stop (&sigev);	624	ev_io_stop (&sigev);
514	close (sigpipe [0]);	625	close (sigpipe [0]);
…		…
518	}	629	}
519		630
520	/*****************************************************************************/	631	/*****************************************************************************/
521		632
522	static void	633	static void
523	call_pending (void)	634	call_pending (EV_P)
524	{	635	{
		636	int pri;
		637
		638	for (pri = NUMPRI; pri--; )
525	while (pendingcnt)	639	while (pendingcnt [pri])
526	{	640	{
527	ANPENDING *p = pendings + --pendingcnt;	641	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
528		642
529	if (p->w)	643	if (p->w)
530	{	644	{
531	p->w->pending = 0;	645	p->w->pending = 0;
532	p->w->cb (p->w, p->events);	646	p->w->cb (EV_A_ p->w, p->events);
533	}	647	}
534	}	648	}
535	}	649	}
536		650
537	static void	651	static void
538	timers_reify (void)	652	timers_reify (EV_P)
539	{	653	{
540	while (timercnt && timers [0]->at <= now)	654	while (timercnt && timers [0]->at <= mn_now)
541	{	655	{
542	struct ev_timer *w = timers [0];	656	struct ev_timer *w = timers [0];
543		657
544	/* first reschedule or stop timer */	658	/* first reschedule or stop timer */
545	if (w->repeat)	659	if (w->repeat)
546	{	660	{
547	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	661	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
548	w->at = now + w->repeat;	662	w->at = mn_now + w->repeat;
549	downheap ((WT *)timers, timercnt, 0);	663	downheap ((WT *)timers, timercnt, 0);
550	}	664	}
551	else	665	else
552	ev_timer_stop (w); /* nonrepeating: stop timer */	666	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
553		667
554	event ((W)w, EV_TIMEOUT);	668	event ((W)w, EV_TIMEOUT);
555	}	669	}
556	}	670	}
557		671
558	static void	672	static void
559	periodics_reify (void)	673	periodics_reify (EV_P)
560	{	674	{
561	while (periodiccnt && periodics [0]->at <= ev_now)	675	while (periodiccnt && periodics [0]->at <= rt_now)
562	{	676	{
563	struct ev_periodic *w = periodics [0];	677	struct ev_periodic *w = periodics [0];
564		678
565	/* first reschedule or stop timer */	679	/* first reschedule or stop timer */
566	if (w->interval)	680	if (w->interval)
567	{	681	{
568	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	682	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;
569	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	683	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
570	downheap ((WT *)periodics, periodiccnt, 0);	684	downheap ((WT *)periodics, periodiccnt, 0);
571	}	685	}
572	else	686	else
573	ev_periodic_stop (w); /* nonrepeating: stop timer */	687	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
574		688
575	event ((W)w, EV_PERIODIC);	689	event (EV_A_ (W)w, EV_PERIODIC);
576	}	690	}
577	}	691	}
578		692
579	static void	693	static void
580	periodics_reschedule (ev_tstamp diff)	694	periodics_reschedule (EV_P_ ev_tstamp diff)
581	{	695	{
582	int i;	696	int i;
583		697
584	/* adjust periodics after time jump */	698	/* adjust periodics after time jump */
585	for (i = 0; i < periodiccnt; ++i)	699	for (i = 0; i < periodiccnt; ++i)
586	{	700	{
587	struct ev_periodic *w = periodics [i];	701	struct ev_periodic *w = periodics [i];
588		702
589	if (w->interval)	703	if (w->interval)
590	{	704	{
591	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	705	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
592		706
593	if (fabs (diff) >= 1e-4)	707	if (fabs (diff) >= 1e-4)
594	{	708	{
595	ev_periodic_stop (w);	709	ev_periodic_stop (EV_A_ w);
596	ev_periodic_start (w);	710	ev_periodic_start (EV_A_ w);
597		711
598	i = 0; /* restart loop, inefficient, but time jumps should be rare */	712	i = 0; /* restart loop, inefficient, but time jumps should be rare */
599	}	713	}
600	}	714	}
601	}	715	}
602	}	716	}
603		717
		718	inline int
		719	time_update_monotonic (EV_P)
		720	{
		721	mn_now = get_clock ();
		722
		723	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		724	{
		725	rt_now = mn_now + diff;
		726	return 0;
		727	}
		728	else
		729	{
		730	now_floor = mn_now;
		731	rt_now = ev_time ();
		732	return 1;
		733	}
		734	}
		735
604	static void	736	static void
605	time_update (void)	737	time_update (EV_P)
606	{	738	{
607	int i;	739	int i;
608		740
609	ev_now = ev_time ();	741	#if EV_USE_MONOTONIC
610
611	if (have_monotonic)	742	if (expect_true (have_monotonic))
612	{	743	{
613	ev_tstamp odiff = diff;	744	if (time_update_monotonic (EV_A))
614
615	for (i = 4; --i; ) /* loop a few times, before making important decisions */
616	{	745	{
617	now = get_clock ();	746	ev_tstamp odiff = diff;
		747
		748	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		749	{
618	diff = ev_now - now;	750	diff = rt_now - mn_now;
619		751
620	if (fabs (odiff - diff) < MIN_TIMEJUMP)	752	if (fabs (odiff - diff) < MIN_TIMEJUMP)
621	return; /* all is well */	753	return; /* all is well */
622		754
623	ev_now = ev_time ();	755	rt_now = ev_time ();
		756	mn_now = get_clock ();
		757	now_floor = mn_now;
		758	}
		759
		760	periodics_reschedule (EV_A_ diff - odiff);
		761	/* no timer adjustment, as the monotonic clock doesn't jump */
624	}	762	}
625
626	periodics_reschedule (diff - odiff);
627	/* no timer adjustment, as the monotonic clock doesn't jump */
628	}	763	}
629	else	764	else
		765	#endif
630	{	766	{
631	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)	767	rt_now = ev_time ();
		768
		769	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
632	{	770	{
633	periodics_reschedule (ev_now - now);	771	periodics_reschedule (EV_A_ rt_now - mn_now);
634		772
635	/* adjust timers. this is easy, as the offset is the same for all */	773	/* adjust timers. this is easy, as the offset is the same for all */
636	for (i = 0; i < timercnt; ++i)	774	for (i = 0; i < timercnt; ++i)
637	timers [i]->at += diff;	775	timers [i]->at += diff;
638	}	776	}
639		777
640	now = ev_now;	778	mn_now = rt_now;
641	}	779	}
642	}	780	}
643		781
644	int ev_loop_done;	782	void
		783	ev_ref (EV_P)
		784	{
		785	++activecnt;
		786	}
645		787
		788	void
		789	ev_unref (EV_P)
		790	{
		791	--activecnt;
		792	}
		793
		794	static int loop_done;
		795
		796	void
646	void ev_loop (int flags)	797	ev_loop (EV_P_ int flags)
647	{	798	{
648	double block;	799	double block;
649	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	800	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
650		801
651	do	802	do
652	{	803	{
653	/* queue check watchers (and execute them) */	804	/* queue check watchers (and execute them) */
654	if (preparecnt)	805	if (expect_false (preparecnt))
655	{	806	{
656	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	807	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
657	call_pending ();	808	call_pending (EV_A);
658	}	809	}
659		810
660	/* update fd-related kernel structures */	811	/* update fd-related kernel structures */
661	fd_reify ();	812	fd_reify (EV_A);
662		813
663	/* calculate blocking time */	814	/* calculate blocking time */
664		815
665	/* we only need this for !monotonic clockor timers, but as we basically	816	/* we only need this for !monotonic clockor timers, but as we basically
666	always have timers, we just calculate it always */	817	always have timers, we just calculate it always */
		818	#if EV_USE_MONOTONIC
		819	if (expect_true (have_monotonic))
		820	time_update_monotonic (EV_A);
		821	else
		822	#endif
		823	{
667	ev_now = ev_time ();	824	rt_now = ev_time ();
		825	mn_now = rt_now;
		826	}
668		827
669	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	828	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
670	block = 0.;	829	block = 0.;
671	else	830	else
672	{	831	{
673	block = MAX_BLOCKTIME;	832	block = MAX_BLOCKTIME;
674		833
675	if (timercnt)	834	if (timercnt)
676	{	835	{
677	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	836	ev_tstamp to = timers [0]->at - mn_now + method_fudge;
678	if (block > to) block = to;	837	if (block > to) block = to;
679	}	838	}
680		839
681	if (periodiccnt)	840	if (periodiccnt)
682	{	841	{
683	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	842	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
684	if (block > to) block = to;	843	if (block > to) block = to;
685	}	844	}
686		845
687	if (block < 0.) block = 0.;	846	if (block < 0.) block = 0.;
688	}	847	}
689		848
690	method_poll (block);	849	method_poll (EV_A_ block);
691		850
692	/* update ev_now, do magic */	851	/* update rt_now, do magic */
693	time_update ();	852	time_update (EV_A);
694		853
695	/* queue pending timers and reschedule them */	854	/* queue pending timers and reschedule them */
696	timers_reify (); /* relative timers called last */	855	timers_reify (EV_A); /* relative timers called last */
697	periodics_reify (); /* absolute timers called first */	856	periodics_reify (EV_A); /* absolute timers called first */
698		857
699	/* queue idle watchers unless io or timers are pending */	858	/* queue idle watchers unless io or timers are pending */
700	if (!pendingcnt)	859	if (!pendingcnt)
701	queue_events ((W *)idles, idlecnt, EV_IDLE);	860	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
702		861
703	/* queue check watchers, to be executed first */	862	/* queue check watchers, to be executed first */
704	if (checkcnt)	863	if (checkcnt)
705	queue_events ((W *)checks, checkcnt, EV_CHECK);	864	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
706		865
707	call_pending ();	866	call_pending (EV_A);
708	}	867	}
709	while (!ev_loop_done);	868	while (activecnt && !loop_done);
710		869
711	if (ev_loop_done != 2)	870	if (loop_done != 2)
712	ev_loop_done = 0;	871	loop_done = 0;
		872	}
		873
		874	void
		875	ev_unloop (EV_P_ int how)
		876	{
		877	loop_done = how;
713	}	878	}
714		879
715	/*****************************************************************************/	880	/*****************************************************************************/
716		881
717	static void	882	inline void
718	wlist_add (WL *head, WL elem)	883	wlist_add (WL *head, WL elem)
719	{	884	{
720	elem->next = *head;	885	elem->next = *head;
721	*head = elem;	886	*head = elem;
722	}	887	}
723		888
724	static void	889	inline void
725	wlist_del (WL *head, WL elem)	890	wlist_del (WL *head, WL elem)
726	{	891	{
727	while (*head)	892	while (*head)
728	{	893	{
729	if (*head == elem)	894	if (*head == elem)
…		…
734		899
735	head = &(*head)->next;	900	head = &(*head)->next;
736	}	901	}
737	}	902	}
738		903
739	static void	904	inline void
740	ev_clear_pending (W w)	905	ev_clear_pending (EV_P_ W w)
741	{	906	{
742	if (w->pending)	907	if (w->pending)
743	{	908	{
744	pendings [w->pending - 1].w = 0;	909	pendings [ABSPRI (w)][w->pending - 1].w = 0;
745	w->pending = 0;	910	w->pending = 0;
746	}	911	}
747	}	912	}
748		913
749	static void	914	inline void
750	ev_start (W w, int active)	915	ev_start (EV_P_ W w, int active)
751	{	916	{
		917	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		918	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		919
752	w->active = active;	920	w->active = active;
		921	ev_ref (EV_A);
753	}	922	}
754		923
755	static void	924	inline void
756	ev_stop (W w)	925	ev_stop (EV_P_ W w)
757	{	926	{
		927	ev_unref (EV_A);
758	w->active = 0;	928	w->active = 0;
759	}	929	}
760		930
761	/*****************************************************************************/	931	/*****************************************************************************/
762		932
763	void	933	void
764	ev_io_start (struct ev_io *w)	934	ev_io_start (EV_P_ struct ev_io *w)
765	{	935	{
		936	int fd = w->fd;
		937
766	if (ev_is_active (w))	938	if (ev_is_active (w))
767	return;	939	return;
768		940
769	int fd = w->fd;
770
771	assert (("ev_io_start called with negative fd", fd >= 0));	941	assert (("ev_io_start called with negative fd", fd >= 0));
772		942
773	ev_start ((W)w, 1);	943	ev_start (EV_A_ (W)w, 1);
774	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	944	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
775	wlist_add ((WL *)&anfds[fd].head, (WL)w);	945	wlist_add ((WL *)&anfds[fd].head, (WL)w);
776		946
777	fd_change (fd);	947	fd_change (EV_A_ fd);
778	}	948	}
779		949
780	void	950	void
781	ev_io_stop (struct ev_io *w)	951	ev_io_stop (EV_P_ struct ev_io *w)
782	{	952	{
783	ev_clear_pending ((W)w);	953	ev_clear_pending (EV_A_ (W)w);
784	if (!ev_is_active (w))	954	if (!ev_is_active (w))
785	return;	955	return;
786		956
787	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	957	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
788	ev_stop ((W)w);	958	ev_stop (EV_A_ (W)w);
789		959
790	fd_change (w->fd);	960	fd_change (EV_A_ w->fd);
791	}	961	}
792		962
793	void	963	void
794	ev_timer_start (struct ev_timer *w)	964	ev_timer_start (EV_P_ struct ev_timer *w)
795	{	965	{
796	if (ev_is_active (w))	966	if (ev_is_active (w))
797	return;	967	return;
798		968
799	w->at += now;	969	w->at += mn_now;
800		970
801	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	971	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
802		972
803	ev_start ((W)w, ++timercnt);	973	ev_start (EV_A_ (W)w, ++timercnt);
804	array_needsize (timers, timermax, timercnt, );	974	array_needsize (timers, timermax, timercnt, );
805	timers [timercnt - 1] = w;	975	timers [timercnt - 1] = w;
806	upheap ((WT *)timers, timercnt - 1);	976	upheap ((WT *)timers, timercnt - 1);
807	}	977	}
808		978
809	void	979	void
810	ev_timer_stop (struct ev_timer *w)	980	ev_timer_stop (EV_P_ struct ev_timer *w)
811	{	981	{
812	ev_clear_pending ((W)w);	982	ev_clear_pending (EV_A_ (W)w);
813	if (!ev_is_active (w))	983	if (!ev_is_active (w))
814	return;	984	return;
815		985
816	if (w->active < timercnt--)	986	if (w->active < timercnt--)
817	{	987	{
…		…
819	downheap ((WT *)timers, timercnt, w->active - 1);	989	downheap ((WT *)timers, timercnt, w->active - 1);
820	}	990	}
821		991
822	w->at = w->repeat;	992	w->at = w->repeat;
823		993
824	ev_stop ((W)w);	994	ev_stop (EV_A_ (W)w);
825	}	995	}
826		996
827	void	997	void
828	ev_timer_again (struct ev_timer *w)	998	ev_timer_again (EV_P_ struct ev_timer *w)
829	{	999	{
830	if (ev_is_active (w))	1000	if (ev_is_active (w))
831	{	1001	{
832	if (w->repeat)	1002	if (w->repeat)
833	{	1003	{
834	w->at = now + w->repeat;	1004	w->at = mn_now + w->repeat;
835	downheap ((WT *)timers, timercnt, w->active - 1);	1005	downheap ((WT *)timers, timercnt, w->active - 1);
836	}	1006	}
837	else	1007	else
838	ev_timer_stop (w);	1008	ev_timer_stop (EV_A_ w);
839	}	1009	}
840	else if (w->repeat)	1010	else if (w->repeat)
841	ev_timer_start (w);	1011	ev_timer_start (EV_A_ w);
842	}	1012	}
843		1013
844	void	1014	void
845	ev_periodic_start (struct ev_periodic *w)	1015	ev_periodic_start (EV_P_ struct ev_periodic *w)
846	{	1016	{
847	if (ev_is_active (w))	1017	if (ev_is_active (w))
848	return;	1018	return;
849		1019
850	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1020	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
851		1021
852	/* this formula differs from the one in periodic_reify because we do not always round up */	1022	/* this formula differs from the one in periodic_reify because we do not always round up */
853	if (w->interval)	1023	if (w->interval)
854	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1024	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
855		1025
856	ev_start ((W)w, ++periodiccnt);	1026	ev_start (EV_A_ (W)w, ++periodiccnt);
857	array_needsize (periodics, periodicmax, periodiccnt, );	1027	array_needsize (periodics, periodicmax, periodiccnt, );
858	periodics [periodiccnt - 1] = w;	1028	periodics [periodiccnt - 1] = w;
859	upheap ((WT *)periodics, periodiccnt - 1);	1029	upheap ((WT *)periodics, periodiccnt - 1);
860	}	1030	}
861		1031
862	void	1032	void
863	ev_periodic_stop (struct ev_periodic *w)	1033	ev_periodic_stop (EV_P_ struct ev_periodic *w)
864	{	1034	{
865	ev_clear_pending ((W)w);	1035	ev_clear_pending (EV_A_ (W)w);
866	if (!ev_is_active (w))	1036	if (!ev_is_active (w))
867	return;	1037	return;
868		1038
869	if (w->active < periodiccnt--)	1039	if (w->active < periodiccnt--)
870	{	1040	{
871	periodics [w->active - 1] = periodics [periodiccnt];	1041	periodics [w->active - 1] = periodics [periodiccnt];
872	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1042	downheap ((WT *)periodics, periodiccnt, w->active - 1);
873	}	1043	}
874		1044
875	ev_stop ((W)w);	1045	ev_stop (EV_A_ (W)w);
876	}	1046	}
877		1047
		1048	#ifndef SA_RESTART
		1049	# define SA_RESTART 0
		1050	#endif
		1051
878	void	1052	void
879	ev_signal_start (struct ev_signal *w)	1053	ev_signal_start (EV_P_ struct ev_signal *w)
880	{	1054	{
881	if (ev_is_active (w))	1055	if (ev_is_active (w))
882	return;	1056	return;
883		1057
884	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1058	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
885		1059
886	ev_start ((W)w, 1);	1060	ev_start (EV_A_ (W)w, 1);
887	array_needsize (signals, signalmax, w->signum, signals_init);	1061	array_needsize (signals, signalmax, w->signum, signals_init);
888	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1062	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
889		1063
890	if (!w->next)	1064	if (!w->next)
891	{	1065	{
892	struct sigaction sa;	1066	struct sigaction sa;
893	sa.sa_handler = sighandler;	1067	sa.sa_handler = sighandler;
894	sigfillset (&sa.sa_mask);	1068	sigfillset (&sa.sa_mask);
895	sa.sa_flags = 0;	1069	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
896	sigaction (w->signum, &sa, 0);	1070	sigaction (w->signum, &sa, 0);
897	}	1071	}
898	}	1072	}
899		1073
900	void	1074	void
901	ev_signal_stop (struct ev_signal *w)	1075	ev_signal_stop (EV_P_ struct ev_signal *w)
902	{	1076	{
903	ev_clear_pending ((W)w);	1077	ev_clear_pending (EV_A_ (W)w);
904	if (!ev_is_active (w))	1078	if (!ev_is_active (w))
905	return;	1079	return;
906		1080
907	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1081	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
908	ev_stop ((W)w);	1082	ev_stop (EV_A_ (W)w);
909		1083
910	if (!signals [w->signum - 1].head)	1084	if (!signals [w->signum - 1].head)
911	signal (w->signum, SIG_DFL);	1085	signal (w->signum, SIG_DFL);
912	}	1086	}
913		1087
914	void	1088	void
915	ev_idle_start (struct ev_idle *w)	1089	ev_idle_start (EV_P_ struct ev_idle *w)
916	{	1090	{
917	if (ev_is_active (w))	1091	if (ev_is_active (w))
918	return;	1092	return;
919		1093
920	ev_start ((W)w, ++idlecnt);	1094	ev_start (EV_A_ (W)w, ++idlecnt);
921	array_needsize (idles, idlemax, idlecnt, );	1095	array_needsize (idles, idlemax, idlecnt, );
922	idles [idlecnt - 1] = w;	1096	idles [idlecnt - 1] = w;
923	}	1097	}
924		1098
925	void	1099	void
926	ev_idle_stop (struct ev_idle *w)	1100	ev_idle_stop (EV_P_ struct ev_idle *w)
927	{	1101	{
928	ev_clear_pending ((W)w);	1102	ev_clear_pending (EV_A_ (W)w);
929	if (ev_is_active (w))	1103	if (ev_is_active (w))
930	return;	1104	return;
931		1105
932	idles [w->active - 1] = idles [--idlecnt];	1106	idles [w->active - 1] = idles [--idlecnt];
933	ev_stop ((W)w);	1107	ev_stop (EV_A_ (W)w);
934	}	1108	}
935		1109
936	void	1110	void
937	ev_prepare_start (struct ev_prepare *w)	1111	ev_prepare_start (EV_P_ struct ev_prepare *w)
938	{	1112	{
939	if (ev_is_active (w))	1113	if (ev_is_active (w))
940	return;	1114	return;
941		1115
942	ev_start ((W)w, ++preparecnt);	1116	ev_start (EV_A_ (W)w, ++preparecnt);
943	array_needsize (prepares, preparemax, preparecnt, );	1117	array_needsize (prepares, preparemax, preparecnt, );
944	prepares [preparecnt - 1] = w;	1118	prepares [preparecnt - 1] = w;
945	}	1119	}
946		1120
947	void	1121	void
948	ev_prepare_stop (struct ev_prepare *w)	1122	ev_prepare_stop (EV_P_ struct ev_prepare *w)
949	{	1123	{
950	ev_clear_pending ((W)w);	1124	ev_clear_pending (EV_A_ (W)w);
951	if (ev_is_active (w))	1125	if (ev_is_active (w))
952	return;	1126	return;
953		1127
954	prepares [w->active - 1] = prepares [--preparecnt];	1128	prepares [w->active - 1] = prepares [--preparecnt];
955	ev_stop ((W)w);	1129	ev_stop (EV_A_ (W)w);
956	}	1130	}
957		1131
958	void	1132	void
959	ev_check_start (struct ev_check *w)	1133	ev_check_start (EV_P_ struct ev_check *w)
960	{	1134	{
961	if (ev_is_active (w))	1135	if (ev_is_active (w))
962	return;	1136	return;
963		1137
964	ev_start ((W)w, ++checkcnt);	1138	ev_start (EV_A_ (W)w, ++checkcnt);
965	array_needsize (checks, checkmax, checkcnt, );	1139	array_needsize (checks, checkmax, checkcnt, );
966	checks [checkcnt - 1] = w;	1140	checks [checkcnt - 1] = w;
967	}	1141	}
968		1142
969	void	1143	void
970	ev_check_stop (struct ev_check *w)	1144	ev_check_stop (EV_P_ struct ev_check *w)
971	{	1145	{
972	ev_clear_pending ((W)w);	1146	ev_clear_pending (EV_A_ (W)w);
973	if (ev_is_active (w))	1147	if (ev_is_active (w))
974	return;	1148	return;
975		1149
976	checks [w->active - 1] = checks [--checkcnt];	1150	checks [w->active - 1] = checks [--checkcnt];
977	ev_stop ((W)w);	1151	ev_stop (EV_A_ (W)w);
978	}	1152	}
979		1153
980	void	1154	void
981	ev_child_start (struct ev_child *w)	1155	ev_child_start (EV_P_ struct ev_child *w)
982	{	1156	{
983	if (ev_is_active (w))	1157	if (ev_is_active (w))
984	return;	1158	return;
985		1159
986	ev_start ((W)w, 1);	1160	ev_start (EV_A_ (W)w, 1);
987	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1161	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
988	}	1162	}
989		1163
990	void	1164	void
991	ev_child_stop (struct ev_child *w)	1165	ev_child_stop (EV_P_ struct ev_child *w)
992	{	1166	{
993	ev_clear_pending ((W)w);	1167	ev_clear_pending (EV_A_ (W)w);
994	if (ev_is_active (w))	1168	if (ev_is_active (w))
995	return;	1169	return;
996		1170
997	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1171	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
998	ev_stop ((W)w);	1172	ev_stop (EV_A_ (W)w);
999	}	1173	}
1000		1174
1001	/*****************************************************************************/	1175	/*****************************************************************************/
1002		1176
1003	struct ev_once	1177	struct ev_once
…		…
1007	void (cb)(int revents, void arg);	1181	void (cb)(int revents, void arg);
1008	void *arg;	1182	void *arg;
1009	};	1183	};
1010		1184
1011	static void	1185	static void
1012	once_cb (struct ev_once *once, int revents)	1186	once_cb (EV_P_ struct ev_once *once, int revents)
1013	{	1187	{
1014	void (cb)(int revents, void arg) = once->cb;	1188	void (cb)(int revents, void arg) = once->cb;
1015	void *arg = once->arg;	1189	void *arg = once->arg;
1016		1190
1017	ev_io_stop (&once->io);	1191	ev_io_stop (EV_A_ &once->io);
1018	ev_timer_stop (&once->to);	1192	ev_timer_stop (EV_A_ &once->to);
1019	free (once);	1193	free (once);
1020		1194
1021	cb (revents, arg);	1195	cb (revents, arg);
1022	}	1196	}
1023		1197
1024	static void	1198	static void
1025	once_cb_io (struct ev_io *w, int revents)	1199	once_cb_io (EV_P_ struct ev_io *w, int revents)
1026	{	1200	{
1027	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1201	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1028	}	1202	}
1029		1203
1030	static void	1204	static void
1031	once_cb_to (struct ev_timer *w, int revents)	1205	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1032	{	1206	{
1033	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1207	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1034	}	1208	}
1035		1209
1036	void	1210	void
1037	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1211	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1038	{	1212	{
1039	struct ev_once *once = malloc (sizeof (struct ev_once));	1213	struct ev_once *once = malloc (sizeof (struct ev_once));
1040		1214
1041	if (!once)	1215	if (!once)
1042	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1216	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
…		…
1047		1221
1048	ev_watcher_init (&once->io, once_cb_io);	1222	ev_watcher_init (&once->io, once_cb_io);
1049	if (fd >= 0)	1223	if (fd >= 0)
1050	{	1224	{
1051	ev_io_set (&once->io, fd, events);	1225	ev_io_set (&once->io, fd, events);
1052	ev_io_start (&once->io);	1226	ev_io_start (EV_A_ &once->io);
1053	}	1227	}
1054		1228
1055	ev_watcher_init (&once->to, once_cb_to);	1229	ev_watcher_init (&once->to, once_cb_to);
1056	if (timeout >= 0.)	1230	if (timeout >= 0.)
1057	{	1231	{
1058	ev_timer_set (&once->to, timeout, 0.);	1232	ev_timer_set (&once->to, timeout, 0.);
1059	ev_timer_start (&once->to);	1233	ev_timer_start (EV_A_ &once->to);
1060	}	1234	}
1061	}	1235	}
1062	}	1236	}
1063		1237
1064	/*****************************************************************************/	1238	/*****************************************************************************/

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Comparing libev/ev.c (file contents): Revision 1.35 by root, Thu Nov 1 11:55:54 2007 UTC vs. Revision 1.53 by root, Sat Nov 3 22:31:11 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.35 by root, Thu Nov 1 11:55:54 2007 UTC vs.
Revision 1.53 by root, Sat Nov 3 22:31:11 2007 UTC