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

Comparing libev/ev.c (file contents):
Revision 1.32 by root, Thu Nov 1 09:21:51 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	int events;
145	} ANFD;
146
147	static ANFD *anfds;
148	static int anfdmax;
149
150	static void	201	static void
151	anfds_init (ANFD *base, int count)	202	anfds_init (ANFD *base, int count)
152	{	203	{
153	while (count--)	204	while (count--)
154	{	205	{
155	base->head = 0;	206	base->head = 0;
156	base->events = EV_NONE;	207	base->events = EV_NONE;
		208	base->reify = 0;
		209
157	++base;	210	++base;
158	}	211	}
159	}	212	}
160		213
161	typedef struct
162	{
163	W w;
164	int events;
165	} ANPENDING;
166
167	static ANPENDING *pendings;
168	static int pendingmax, pendingcnt;
169
170	static void	214	static void
171	event (W w, int events)	215	event (EV_P_ W w, int events)
172	{	216	{
173	if (w->pending)	217	if (w->pending)
174	{	218	{
175	pendings [w->pending - 1].events \|= events;	219	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
176	return;	220	return;
177	}	221	}
178		222
179	w->pending = ++pendingcnt;	223	w->pending = ++pendingcnt [ABSPRI (w)];
180	array_needsize (pendings, pendingmax, pendingcnt, );	224	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
181	pendings [pendingcnt - 1].w = w;	225	pendings [ABSPRI (w)][w->pending - 1].w = w;
182	pendings [pendingcnt - 1].events = events;	226	pendings [ABSPRI (w)][w->pending - 1].events = events;
183	}	227	}
184		228
185	static void	229	static void
186	queue_events (W *events, int eventcnt, int type)	230	queue_events (EV_P_ W *events, int eventcnt, int type)
187	{	231	{
188	int i;	232	int i;
189		233
190	for (i = 0; i < eventcnt; ++i)	234	for (i = 0; i < eventcnt; ++i)
191	event (events [i], type);	235	event (EV_A_ events [i], type);
192	}	236	}
193		237
194	static void	238	static void
195	fd_event (int fd, int events)	239	fd_event (EV_P_ int fd, int events)
196	{	240	{
197	ANFD *anfd = anfds + fd;	241	ANFD *anfd = anfds + fd;
198	struct ev_io *w;	242	struct ev_io *w;
199		243
200	for (w = anfd->head; w; w = w->next)	244	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
201	{	245	{
202	int ev = w->events & events;	246	int ev = w->events & events;
203		247
204	if (ev)	248	if (ev)
205	event ((W)w, ev);	249	event (EV_A_ (W)w, ev);
206	}	250	}
207	}	251	}
208		252
209	/*****************************************************************************/	253	/*****************************************************************************/
210		254
211	static int *fdchanges;
212	static int fdchangemax, fdchangecnt;
213
214	static void	255	static void
215	fd_reify (void)	256	fd_reify (EV_P)
216	{	257	{
217	int i;	258	int i;
218		259
219	for (i = 0; i < fdchangecnt; ++i)	260	for (i = 0; i < fdchangecnt; ++i)
220	{	261	{
…		…
222	ANFD *anfd = anfds + fd;	263	ANFD *anfd = anfds + fd;
223	struct ev_io *w;	264	struct ev_io *w;
224		265
225	int events = 0;	266	int events = 0;
226		267
227	for (w = anfd->head; w; w = w->next)	268	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
228	events \|= w->events;	269	events \|= w->events;
229		270
230	anfd->events &= ~EV_REIFY;	271	anfd->reify = 0;
231		272
232	if (anfd->events != events)	273	if (anfd->events != events)
233	{	274	{
234	method_modify (fd, anfd->events, events);	275	method_modify (EV_A_ fd, anfd->events, events);
235	anfd->events = events;	276	anfd->events = events;
236	}	277	}
237	}	278	}
238		279
239	fdchangecnt = 0;	280	fdchangecnt = 0;
240	}	281	}
241		282
242	static void	283	static void
243	fd_change (int fd)	284	fd_change (EV_P_ int fd)
244	{	285	{
245	if (anfds [fd].events & EV_REIFY \|\| fdchangecnt < 0)	286	if (anfds [fd].reify \|\| fdchangecnt < 0)
246	return;	287	return;
247		288
248	anfds [fd].events \|= EV_REIFY;	289	anfds [fd].reify = 1;
249		290
250	++fdchangecnt;	291	++fdchangecnt;
251	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	292	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
252	fdchanges [fdchangecnt - 1] = fd;	293	fdchanges [fdchangecnt - 1] = fd;
253	}	294	}
254		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
255	/* called on EBADF to verify fds */	308	/* called on EBADF to verify fds */
256	static void	309	static void
257	fd_recheck (void)	310	fd_ebadf (EV_P)
258	{	311	{
259	int fd;	312	int fd;
260		313
261	for (fd = 0; fd < anfdmax; ++fd)	314	for (fd = 0; fd < anfdmax; ++fd)
262	if (anfds [fd].events)	315	if (anfds [fd].events)
263	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
264	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)
265	{	328	{
266	ev_io_stop (anfds [fd].head);	329	close (fd);
267	event ((W)anfds [fd].head, EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT);	330	fd_kill (EV_A_ fd);
		331	return;
268	}	332	}
269	}	333	}
270		334
271	/*****************************************************************************/	335	/*****************************************************************************/
272
273	static struct ev_timer **timers;
274	static int timermax, timercnt;
275
276	static struct ev_periodic **periodics;
277	static int periodicmax, periodiccnt;
278		336
279	static void	337	static void
280	upheap (WT *timers, int k)	338	upheap (WT *timers, int k)
281	{	339	{
282	WT w = timers [k];	340	WT w = timers [k];
…		…
319		377
320	/*****************************************************************************/	378	/*****************************************************************************/
321		379
322	typedef struct	380	typedef struct
323	{	381	{
324	struct ev_signal *head;	382	struct ev_watcher_list *head;
325	sig_atomic_t gotsig;	383	sig_atomic_t volatile gotsig;
326	} ANSIG;	384	} ANSIG;
327		385
328	static ANSIG *signals;	386	static ANSIG *signals;
329	static int signalmax;	387	static int signalmax;
330		388
331	static int sigpipe [2];	389	static int sigpipe [2];
332	static sig_atomic_t gotsig;	390	static sig_atomic_t volatile gotsig;
333	static struct ev_io sigev;
334		391
335	static void	392	static void
336	signals_init (ANSIG *base, int count)	393	signals_init (ANSIG *base, int count)
337	{	394	{
338	while (count--)	395	while (count--)
339	{	396	{
340	base->head = 0;	397	base->head = 0;
341	base->gotsig = 0;	398	base->gotsig = 0;
		399
342	++base;	400	++base;
343	}	401	}
344	}	402	}
345		403
346	static void	404	static void
…		…
348	{	406	{
349	signals [signum - 1].gotsig = 1;	407	signals [signum - 1].gotsig = 1;
350		408
351	if (!gotsig)	409	if (!gotsig)
352	{	410	{
		411	int old_errno = errno;
353	gotsig = 1;	412	gotsig = 1;
354	write (sigpipe [1], &gotsig, 1);	413	write (sigpipe [1], &signum, 1);
		414	errno = old_errno;
355	}	415	}
356	}	416	}
357		417
358	static void	418	static void
359	sigcb (struct ev_io *iow, int revents)	419	sigcb (EV_P_ struct ev_io *iow, int revents)
360	{	420	{
361	struct ev_signal *w;	421	struct ev_watcher_list *w;
362	int sig;	422	int signum;
363		423
		424	read (sigpipe [0], &revents, 1);
364	gotsig = 0;	425	gotsig = 0;
365	read (sigpipe [0], &revents, 1);
366		426
367	for (sig = signalmax; sig--; )	427	for (signum = signalmax; signum--; )
368	if (signals [sig].gotsig)	428	if (signals [signum].gotsig)
369	{	429	{
370	signals [sig].gotsig = 0;	430	signals [signum].gotsig = 0;
371		431
372	for (w = signals [sig].head; w; w = w->next)	432	for (w = signals [signum].head; w; w = w->next)
373	event ((W)w, EV_SIGNAL);	433	event (EV_A_ (W)w, EV_SIGNAL);
374	}	434	}
375	}	435	}
376		436
377	static void	437	static void
378	siginit (void)	438	siginit (EV_P)
379	{	439	{
		440	#ifndef WIN32
380	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	441	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
381	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	442	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
382		443
383	/* rather than sort out wether we really need nb, set it */	444	/* rather than sort out wether we really need nb, set it */
384	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	445	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
385	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	446	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		447	#endif
386		448
387	ev_io_set (&sigev, sigpipe [0], EV_READ);	449	ev_io_set (&sigev, sigpipe [0], EV_READ);
388	ev_io_start (&sigev);	450	ev_io_start (&sigev);
		451	ev_unref (EV_A); /* child watcher should not keep loop alive */
389	}	452	}
390		453
391	/*****************************************************************************/	454	/*****************************************************************************/
392		455
393	static struct ev_idle **idles;	456	#ifndef WIN32
394	static int idlemax, idlecnt;
395
396	static struct ev_prepare **prepares;
397	static int preparemax, preparecnt;
398
399	static struct ev_check **checks;
400	static int checkmax, checkcnt;
401
402	/*****************************************************************************/
403
404	static struct ev_child *childs [PID_HASHSIZE];
405	static struct ev_signal childev;
406		457
407	#ifndef WCONTINUED	458	#ifndef WCONTINUED
408	# define WCONTINUED 0	459	# define WCONTINUED 0
409	#endif	460	#endif
410		461
411	static void	462	static void
412	childcb (struct ev_signal *sw, int revents)	463	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
413	{	464	{
414	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	{
415	int pid, status;	480	int pid, status;
416		481
417	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	482	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
418	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	483	{
419	if (w->pid == pid \|\| w->pid == -1)	484	/* make sure we are called again until all childs have been reaped */
420	{	485	event (EV_A_ (W)sw, EV_SIGNAL);
421	w->status = status;	486
422	event ((W)w, EV_CHILD);	487	child_reap (EV_A_ sw, pid, pid, status);
423	}	488	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		489	}
424	}	490	}
		491
		492	#endif
425		493
426	/*****************************************************************************/	494	/*****************************************************************************/
427		495
		496	#if EV_USE_KQUEUE
		497	# include "ev_kqueue.c"
		498	#endif
428	#if EV_USE_EPOLL	499	#if EV_USE_EPOLL
429	# include "ev_epoll.c"	500	# include "ev_epoll.c"
430	#endif	501	#endif
		502	#if EV_USEV_POLL
		503	# include "ev_poll.c"
		504	#endif
431	#if EV_USE_SELECT	505	#if EV_USE_SELECT
432	# include "ev_select.c"	506	# include "ev_select.c"
433	#endif	507	#endif
434		508
435	int	509	int
…		…
442	ev_version_minor (void)	516	ev_version_minor (void)
443	{	517	{
444	return EV_VERSION_MINOR;	518	return EV_VERSION_MINOR;
445	}	519	}
446		520
447	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)
448	{	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
449	if (!ev_method)	546	if (!method)
450	{	547	{
451	#if EV_USE_MONOTONIC	548	#if EV_USE_MONOTONIC
452	{	549	{
453	struct timespec ts;	550	struct timespec ts;
454	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	551	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
455	have_monotonic = 1;	552	have_monotonic = 1;
456	}	553	}
457	#endif	554	#endif
458		555
459	ev_now = ev_time ();	556	rt_now = ev_time ();
460	now = get_clock ();	557	mn_now = get_clock ();
		558	now_floor = mn_now;
461	diff = ev_now - now;	559	diff = rt_now - mn_now;
462		560
463	if (pipe (sigpipe))	561	if (pipe (sigpipe))
464	return 0;	562	return 0;
465		563
		564	if (methods == EVMETHOD_AUTO)
		565	if (!enable_secure () && getenv ("LIBmethodS"))
		566	methods = atoi (getenv ("LIBmethodS"));
		567	else
466	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
467	#if EV_USE_EPOLL	574	#if EV_USE_EPOLL
468	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);
469	#endif	579	#endif
470	#if EV_USE_SELECT	580	#if EV_USE_SELECT
471	if (ev_method == EVMETHOD_NONE) select_init (flags);	581	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
472	#endif	582	#endif
473		583
474	if (ev_method)	584	if (method)
475	{	585	{
476	ev_watcher_init (&sigev, sigcb);	586	ev_watcher_init (&sigev, sigcb);
		587	ev_set_priority (&sigev, EV_MAXPRI);
477	siginit ();	588	siginit (EV_A);
478		589
		590	#ifndef WIN32
479	ev_signal_init (&childev, childcb, SIGCHLD);	591	ev_signal_init (&childev, childcb, SIGCHLD);
		592	ev_set_priority (&childev, EV_MAXPRI);
480	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
481	}	596	}
482	}	597	}
483		598
484	return ev_method;	599	return method;
485	}	600	}
486		601
487	/*****************************************************************************/	602	/*****************************************************************************/
488		603
489	void	604	void
490	ev_prefork (void)	605	ev_fork_prepare (void)
491	{	606	{
492	/* nop */	607	/* nop */
493	}	608	}
494		609
495	void	610	void
496	ev_postfork_parent (void)	611	ev_fork_parent (void)
497	{	612	{
498	/* nop */	613	/* nop */
499	}	614	}
500		615
501	void	616	void
502	ev_postfork_child (void)	617	ev_fork_child (void)
503	{	618	{
504	#if EV_USE_EPOLL	619	#if EV_USE_EPOLL
505	if (ev_method == EVMETHOD_EPOLL)	620	if (method == EVMETHOD_EPOLL)
506	epoll_postfork_child ();	621	epoll_postfork_child ();
507	#endif	622	#endif
508		623
509	ev_io_stop (&sigev);	624	ev_io_stop (&sigev);
510	close (sigpipe [0]);	625	close (sigpipe [0]);
…		…
514	}	629	}
515		630
516	/*****************************************************************************/	631	/*****************************************************************************/
517		632
518	static void	633	static void
519	call_pending (void)	634	call_pending (EV_P)
520	{	635	{
		636	int pri;
		637
		638	for (pri = NUMPRI; pri--; )
521	while (pendingcnt)	639	while (pendingcnt [pri])
522	{	640	{
523	ANPENDING *p = pendings + --pendingcnt;	641	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
524		642
525	if (p->w)	643	if (p->w)
526	{	644	{
527	p->w->pending = 0;	645	p->w->pending = 0;
528	p->w->cb (p->w, p->events);	646	p->w->cb (EV_A_ p->w, p->events);
529	}	647	}
530	}	648	}
531	}	649	}
532		650
533	static void	651	static void
534	timers_reify (void)	652	timers_reify (EV_P)
535	{	653	{
536	while (timercnt && timers [0]->at <= now)	654	while (timercnt && timers [0]->at <= mn_now)
537	{	655	{
538	struct ev_timer *w = timers [0];	656	struct ev_timer *w = timers [0];
539		657
540	/* first reschedule or stop timer */	658	/* first reschedule or stop timer */
541	if (w->repeat)	659	if (w->repeat)
542	{	660	{
		661	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
543	w->at = now + w->repeat;	662	w->at = mn_now + w->repeat;
544	assert (("timer timeout in the past, negative repeat?", w->at > now));
545	downheap ((WT *)timers, timercnt, 0);	663	downheap ((WT *)timers, timercnt, 0);
546	}	664	}
547	else	665	else
548	ev_timer_stop (w); /* nonrepeating: stop timer */	666	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
549		667
550	event ((W)w, EV_TIMEOUT);	668	event ((W)w, EV_TIMEOUT);
551	}	669	}
552	}	670	}
553		671
554	static void	672	static void
555	periodics_reify (void)	673	periodics_reify (EV_P)
556	{	674	{
557	while (periodiccnt && periodics [0]->at <= ev_now)	675	while (periodiccnt && periodics [0]->at <= rt_now)
558	{	676	{
559	struct ev_periodic *w = periodics [0];	677	struct ev_periodic *w = periodics [0];
560		678
561	/* first reschedule or stop timer */	679	/* first reschedule or stop timer */
562	if (w->interval)	680	if (w->interval)
563	{	681	{
564	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;
565	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	683	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
566	downheap ((WT *)periodics, periodiccnt, 0);	684	downheap ((WT *)periodics, periodiccnt, 0);
567	}	685	}
568	else	686	else
569	ev_periodic_stop (w); /* nonrepeating: stop timer */	687	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
570		688
571	event ((W)w, EV_TIMEOUT);	689	event (EV_A_ (W)w, EV_PERIODIC);
572	}	690	}
573	}	691	}
574		692
575	static void	693	static void
576	periodics_reschedule (ev_tstamp diff)	694	periodics_reschedule (EV_P_ ev_tstamp diff)
577	{	695	{
578	int i;	696	int i;
579		697
580	/* adjust periodics after time jump */	698	/* adjust periodics after time jump */
581	for (i = 0; i < periodiccnt; ++i)	699	for (i = 0; i < periodiccnt; ++i)
582	{	700	{
583	struct ev_periodic *w = periodics [i];	701	struct ev_periodic *w = periodics [i];
584		702
585	if (w->interval)	703	if (w->interval)
586	{	704	{
587	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;
588		706
589	if (fabs (diff) >= 1e-4)	707	if (fabs (diff) >= 1e-4)
590	{	708	{
591	ev_periodic_stop (w);	709	ev_periodic_stop (EV_A_ w);
592	ev_periodic_start (w);	710	ev_periodic_start (EV_A_ w);
593		711
594	i = 0; /* restart loop, inefficient, but time jumps should be rare */	712	i = 0; /* restart loop, inefficient, but time jumps should be rare */
595	}	713	}
596	}	714	}
597	}	715	}
598	}	716	}
599		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
600	static void	736	static void
601	time_update (void)	737	time_update (EV_P)
602	{	738	{
603	int i;	739	int i;
604		740
605	ev_now = ev_time ();	741	#if EV_USE_MONOTONIC
606
607	if (have_monotonic)	742	if (expect_true (have_monotonic))
608	{	743	{
609	ev_tstamp odiff = diff;	744	if (time_update_monotonic (EV_A))
610
611	for (i = 4; --i; ) /* loop a few times, before making important decisions */
612	{	745	{
613	now = get_clock ();	746	ev_tstamp odiff = diff;
		747
		748	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		749	{
614	diff = ev_now - now;	750	diff = rt_now - mn_now;
615		751
616	if (fabs (odiff - diff) < MIN_TIMEJUMP)	752	if (fabs (odiff - diff) < MIN_TIMEJUMP)
617	return; /* all is well */	753	return; /* all is well */
618		754
619	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 */
620	}	762	}
621
622	periodics_reschedule (diff - odiff);
623	/* no timer adjustment, as the monotonic clock doesn't jump */
624	}	763	}
625	else	764	else
		765	#endif
626	{	766	{
627	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))
628	{	770	{
629	periodics_reschedule (ev_now - now);	771	periodics_reschedule (EV_A_ rt_now - mn_now);
630		772
631	/* 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 */
632	for (i = 0; i < timercnt; ++i)	774	for (i = 0; i < timercnt; ++i)
633	timers [i]->at += diff;	775	timers [i]->at += diff;
634	}	776	}
635		777
636	now = ev_now;	778	mn_now = rt_now;
637	}	779	}
638	}	780	}
639		781
640	int ev_loop_done;	782	void
		783	ev_ref (EV_P)
		784	{
		785	++activecnt;
		786	}
641		787
		788	void
		789	ev_unref (EV_P)
		790	{
		791	--activecnt;
		792	}
		793
		794	static int loop_done;
		795
		796	void
642	void ev_loop (int flags)	797	ev_loop (EV_P_ int flags)
643	{	798	{
644	double block;	799	double block;
645	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	800	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
646		801
647	do	802	do
648	{	803	{
649	/* queue check watchers (and execute them) */	804	/* queue check watchers (and execute them) */
650	if (preparecnt)	805	if (expect_false (preparecnt))
651	{	806	{
652	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	807	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
653	call_pending ();	808	call_pending (EV_A);
654	}	809	}
655		810
656	/* update fd-related kernel structures */	811	/* update fd-related kernel structures */
657	fd_reify ();	812	fd_reify (EV_A);
658		813
659	/* calculate blocking time */	814	/* calculate blocking time */
660		815
661	/* 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
662	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	{
663	ev_now = ev_time ();	824	rt_now = ev_time ();
		825	mn_now = rt_now;
		826	}
664		827
665	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	828	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
666	block = 0.;	829	block = 0.;
667	else	830	else
668	{	831	{
669	block = MAX_BLOCKTIME;	832	block = MAX_BLOCKTIME;
670		833
671	if (timercnt)	834	if (timercnt)
672	{	835	{
673	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;
674	if (block > to) block = to;	837	if (block > to) block = to;
675	}	838	}
676		839
677	if (periodiccnt)	840	if (periodiccnt)
678	{	841	{
679	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	842	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
680	if (block > to) block = to;	843	if (block > to) block = to;
681	}	844	}
682		845
683	if (block < 0.) block = 0.;	846	if (block < 0.) block = 0.;
684	}	847	}
685		848
686	method_poll (block);	849	method_poll (EV_A_ block);
687		850
688	/* update ev_now, do magic */	851	/* update rt_now, do magic */
689	time_update ();	852	time_update (EV_A);
690		853
691	/* queue pending timers and reschedule them */	854	/* queue pending timers and reschedule them */
692	timers_reify (); /* relative timers called last */	855	timers_reify (EV_A); /* relative timers called last */
693	periodics_reify (); /* absolute timers called first */	856	periodics_reify (EV_A); /* absolute timers called first */
694		857
695	/* queue idle watchers unless io or timers are pending */	858	/* queue idle watchers unless io or timers are pending */
696	if (!pendingcnt)	859	if (!pendingcnt)
697	queue_events ((W *)idles, idlecnt, EV_IDLE);	860	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
698		861
699	/* queue check watchers, to be executed first */	862	/* queue check watchers, to be executed first */
700	if (checkcnt)	863	if (checkcnt)
701	queue_events ((W *)checks, checkcnt, EV_CHECK);	864	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
702		865
703	call_pending ();	866	call_pending (EV_A);
704	}	867	}
705	while (!ev_loop_done);	868	while (activecnt && !loop_done);
706		869
707	if (ev_loop_done != 2)	870	if (loop_done != 2)
708	ev_loop_done = 0;	871	loop_done = 0;
		872	}
		873
		874	void
		875	ev_unloop (EV_P_ int how)
		876	{
		877	loop_done = how;
709	}	878	}
710		879
711	/*****************************************************************************/	880	/*****************************************************************************/
712		881
713	static void	882	inline void
714	wlist_add (WL *head, WL elem)	883	wlist_add (WL *head, WL elem)
715	{	884	{
716	elem->next = *head;	885	elem->next = *head;
717	*head = elem;	886	*head = elem;
718	}	887	}
719		888
720	static void	889	inline void
721	wlist_del (WL *head, WL elem)	890	wlist_del (WL *head, WL elem)
722	{	891	{
723	while (*head)	892	while (*head)
724	{	893	{
725	if (*head == elem)	894	if (*head == elem)
…		…
730		899
731	head = &(*head)->next;	900	head = &(*head)->next;
732	}	901	}
733	}	902	}
734		903
735	static void	904	inline void
736	ev_clear (W w)	905	ev_clear_pending (EV_P_ W w)
737	{	906	{
738	if (w->pending)	907	if (w->pending)
739	{	908	{
740	pendings [w->pending - 1].w = 0;	909	pendings [ABSPRI (w)][w->pending - 1].w = 0;
741	w->pending = 0;	910	w->pending = 0;
742	}	911	}
743	}	912	}
744		913
745	static void	914	inline void
746	ev_start (W w, int active)	915	ev_start (EV_P_ W w, int active)
747	{	916	{
		917	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		918	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		919
748	w->active = active;	920	w->active = active;
		921	ev_ref (EV_A);
749	}	922	}
750		923
751	static void	924	inline void
752	ev_stop (W w)	925	ev_stop (EV_P_ W w)
753	{	926	{
		927	ev_unref (EV_A);
754	w->active = 0;	928	w->active = 0;
755	}	929	}
756		930
757	/*****************************************************************************/	931	/*****************************************************************************/
758		932
759	void	933	void
760	ev_io_start (struct ev_io *w)	934	ev_io_start (EV_P_ struct ev_io *w)
761	{	935	{
		936	int fd = w->fd;
		937
762	if (ev_is_active (w))	938	if (ev_is_active (w))
763	return;	939	return;
764		940
765	int fd = w->fd;	941	assert (("ev_io_start called with negative fd", fd >= 0));
766		942
767	ev_start ((W)w, 1);	943	ev_start (EV_A_ (W)w, 1);
768	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	944	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
769	wlist_add ((WL *)&anfds[fd].head, (WL)w);	945	wlist_add ((WL *)&anfds[fd].head, (WL)w);
770		946
771	fd_change (fd);	947	fd_change (EV_A_ fd);
772	}	948	}
773		949
774	void	950	void
775	ev_io_stop (struct ev_io *w)	951	ev_io_stop (EV_P_ struct ev_io *w)
776	{	952	{
777	ev_clear ((W)w);	953	ev_clear_pending (EV_A_ (W)w);
778	if (!ev_is_active (w))	954	if (!ev_is_active (w))
779	return;	955	return;
780		956
781	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	957	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
782	ev_stop ((W)w);	958	ev_stop (EV_A_ (W)w);
783		959
784	fd_change (w->fd);	960	fd_change (EV_A_ w->fd);
785	}	961	}
786		962
787	void	963	void
788	ev_timer_start (struct ev_timer *w)	964	ev_timer_start (EV_P_ struct ev_timer *w)
789	{	965	{
790	if (ev_is_active (w))	966	if (ev_is_active (w))
791	return;	967	return;
792		968
793	w->at += now;	969	w->at += mn_now;
794		970
795	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	971	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
796		972
797	ev_start ((W)w, ++timercnt);	973	ev_start (EV_A_ (W)w, ++timercnt);
798	array_needsize (timers, timermax, timercnt, );	974	array_needsize (timers, timermax, timercnt, );
799	timers [timercnt - 1] = w;	975	timers [timercnt - 1] = w;
800	upheap ((WT *)timers, timercnt - 1);	976	upheap ((WT *)timers, timercnt - 1);
801	}	977	}
802		978
803	void	979	void
804	ev_timer_stop (struct ev_timer *w)	980	ev_timer_stop (EV_P_ struct ev_timer *w)
805	{	981	{
806	ev_clear ((W)w);	982	ev_clear_pending (EV_A_ (W)w);
807	if (!ev_is_active (w))	983	if (!ev_is_active (w))
808	return;	984	return;
809		985
810	if (w->active < timercnt--)	986	if (w->active < timercnt--)
811	{	987	{
…		…
813	downheap ((WT *)timers, timercnt, w->active - 1);	989	downheap ((WT *)timers, timercnt, w->active - 1);
814	}	990	}
815		991
816	w->at = w->repeat;	992	w->at = w->repeat;
817		993
818	ev_stop ((W)w);	994	ev_stop (EV_A_ (W)w);
819	}	995	}
820		996
821	void	997	void
822	ev_timer_again (struct ev_timer *w)	998	ev_timer_again (EV_P_ struct ev_timer *w)
823	{	999	{
824	if (ev_is_active (w))	1000	if (ev_is_active (w))
825	{	1001	{
826	if (w->repeat)	1002	if (w->repeat)
827	{	1003	{
828	w->at = now + w->repeat;	1004	w->at = mn_now + w->repeat;
829	downheap ((WT *)timers, timercnt, w->active - 1);	1005	downheap ((WT *)timers, timercnt, w->active - 1);
830	}	1006	}
831	else	1007	else
832	ev_timer_stop (w);	1008	ev_timer_stop (EV_A_ w);
833	}	1009	}
834	else if (w->repeat)	1010	else if (w->repeat)
835	ev_timer_start (w);	1011	ev_timer_start (EV_A_ w);
836	}	1012	}
837		1013
838	void	1014	void
839	ev_periodic_start (struct ev_periodic *w)	1015	ev_periodic_start (EV_P_ struct ev_periodic *w)
840	{	1016	{
841	if (ev_is_active (w))	1017	if (ev_is_active (w))
842	return;	1018	return;
843		1019
844	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1020	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
845		1021
846	/* 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 */
847	if (w->interval)	1023	if (w->interval)
848	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1024	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
849		1025
850	ev_start ((W)w, ++periodiccnt);	1026	ev_start (EV_A_ (W)w, ++periodiccnt);
851	array_needsize (periodics, periodicmax, periodiccnt, );	1027	array_needsize (periodics, periodicmax, periodiccnt, );
852	periodics [periodiccnt - 1] = w;	1028	periodics [periodiccnt - 1] = w;
853	upheap ((WT *)periodics, periodiccnt - 1);	1029	upheap ((WT *)periodics, periodiccnt - 1);
854	}	1030	}
855		1031
856	void	1032	void
857	ev_periodic_stop (struct ev_periodic *w)	1033	ev_periodic_stop (EV_P_ struct ev_periodic *w)
858	{	1034	{
859	ev_clear ((W)w);	1035	ev_clear_pending (EV_A_ (W)w);
860	if (!ev_is_active (w))	1036	if (!ev_is_active (w))
861	return;	1037	return;
862		1038
863	if (w->active < periodiccnt--)	1039	if (w->active < periodiccnt--)
864	{	1040	{
865	periodics [w->active - 1] = periodics [periodiccnt];	1041	periodics [w->active - 1] = periodics [periodiccnt];
866	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1042	downheap ((WT *)periodics, periodiccnt, w->active - 1);
867	}	1043	}
868		1044
869	ev_stop ((W)w);	1045	ev_stop (EV_A_ (W)w);
870	}	1046	}
871		1047
		1048	#ifndef SA_RESTART
		1049	# define SA_RESTART 0
		1050	#endif
		1051
872	void	1052	void
873	ev_signal_start (struct ev_signal *w)	1053	ev_signal_start (EV_P_ struct ev_signal *w)
874	{	1054	{
875	if (ev_is_active (w))	1055	if (ev_is_active (w))
876	return;	1056	return;
877		1057
		1058	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1059
878	ev_start ((W)w, 1);	1060	ev_start (EV_A_ (W)w, 1);
879	array_needsize (signals, signalmax, w->signum, signals_init);	1061	array_needsize (signals, signalmax, w->signum, signals_init);
880	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1062	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
881		1063
882	if (!w->next)	1064	if (!w->next)
883	{	1065	{
884	struct sigaction sa;	1066	struct sigaction sa;
885	sa.sa_handler = sighandler;	1067	sa.sa_handler = sighandler;
886	sigfillset (&sa.sa_mask);	1068	sigfillset (&sa.sa_mask);
887	sa.sa_flags = 0;	1069	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
888	sigaction (w->signum, &sa, 0);	1070	sigaction (w->signum, &sa, 0);
889	}	1071	}
890	}	1072	}
891		1073
892	void	1074	void
893	ev_signal_stop (struct ev_signal *w)	1075	ev_signal_stop (EV_P_ struct ev_signal *w)
894	{	1076	{
895	ev_clear ((W)w);	1077	ev_clear_pending (EV_A_ (W)w);
896	if (!ev_is_active (w))	1078	if (!ev_is_active (w))
897	return;	1079	return;
898		1080
899	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1081	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
900	ev_stop ((W)w);	1082	ev_stop (EV_A_ (W)w);
901		1083
902	if (!signals [w->signum - 1].head)	1084	if (!signals [w->signum - 1].head)
903	signal (w->signum, SIG_DFL);	1085	signal (w->signum, SIG_DFL);
904	}	1086	}
905		1087
906	void	1088	void
907	ev_idle_start (struct ev_idle *w)	1089	ev_idle_start (EV_P_ struct ev_idle *w)
908	{	1090	{
909	if (ev_is_active (w))	1091	if (ev_is_active (w))
910	return;	1092	return;
911		1093
912	ev_start ((W)w, ++idlecnt);	1094	ev_start (EV_A_ (W)w, ++idlecnt);
913	array_needsize (idles, idlemax, idlecnt, );	1095	array_needsize (idles, idlemax, idlecnt, );
914	idles [idlecnt - 1] = w;	1096	idles [idlecnt - 1] = w;
915	}	1097	}
916		1098
917	void	1099	void
918	ev_idle_stop (struct ev_idle *w)	1100	ev_idle_stop (EV_P_ struct ev_idle *w)
919	{	1101	{
920	ev_clear ((W)w);	1102	ev_clear_pending (EV_A_ (W)w);
921	if (ev_is_active (w))	1103	if (ev_is_active (w))
922	return;	1104	return;
923		1105
924	idles [w->active - 1] = idles [--idlecnt];	1106	idles [w->active - 1] = idles [--idlecnt];
925	ev_stop ((W)w);	1107	ev_stop (EV_A_ (W)w);
926	}	1108	}
927		1109
928	void	1110	void
929	ev_prepare_start (struct ev_prepare *w)	1111	ev_prepare_start (EV_P_ struct ev_prepare *w)
930	{	1112	{
931	if (ev_is_active (w))	1113	if (ev_is_active (w))
932	return;	1114	return;
933		1115
934	ev_start ((W)w, ++preparecnt);	1116	ev_start (EV_A_ (W)w, ++preparecnt);
935	array_needsize (prepares, preparemax, preparecnt, );	1117	array_needsize (prepares, preparemax, preparecnt, );
936	prepares [preparecnt - 1] = w;	1118	prepares [preparecnt - 1] = w;
937	}	1119	}
938		1120
939	void	1121	void
940	ev_prepare_stop (struct ev_prepare *w)	1122	ev_prepare_stop (EV_P_ struct ev_prepare *w)
941	{	1123	{
942	ev_clear ((W)w);	1124	ev_clear_pending (EV_A_ (W)w);
943	if (ev_is_active (w))	1125	if (ev_is_active (w))
944	return;	1126	return;
945		1127
946	prepares [w->active - 1] = prepares [--preparecnt];	1128	prepares [w->active - 1] = prepares [--preparecnt];
947	ev_stop ((W)w);	1129	ev_stop (EV_A_ (W)w);
948	}	1130	}
949		1131
950	void	1132	void
951	ev_check_start (struct ev_check *w)	1133	ev_check_start (EV_P_ struct ev_check *w)
952	{	1134	{
953	if (ev_is_active (w))	1135	if (ev_is_active (w))
954	return;	1136	return;
955		1137
956	ev_start ((W)w, ++checkcnt);	1138	ev_start (EV_A_ (W)w, ++checkcnt);
957	array_needsize (checks, checkmax, checkcnt, );	1139	array_needsize (checks, checkmax, checkcnt, );
958	checks [checkcnt - 1] = w;	1140	checks [checkcnt - 1] = w;
959	}	1141	}
960		1142
961	void	1143	void
962	ev_check_stop (struct ev_check *w)	1144	ev_check_stop (EV_P_ struct ev_check *w)
963	{	1145	{
964	ev_clear ((W)w);	1146	ev_clear_pending (EV_A_ (W)w);
965	if (ev_is_active (w))	1147	if (ev_is_active (w))
966	return;	1148	return;
967		1149
968	checks [w->active - 1] = checks [--checkcnt];	1150	checks [w->active - 1] = checks [--checkcnt];
969	ev_stop ((W)w);	1151	ev_stop (EV_A_ (W)w);
970	}	1152	}
971		1153
972	void	1154	void
973	ev_child_start (struct ev_child *w)	1155	ev_child_start (EV_P_ struct ev_child *w)
974	{	1156	{
975	if (ev_is_active (w))	1157	if (ev_is_active (w))
976	return;	1158	return;
977		1159
978	ev_start ((W)w, 1);	1160	ev_start (EV_A_ (W)w, 1);
979	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1161	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
980	}	1162	}
981		1163
982	void	1164	void
983	ev_child_stop (struct ev_child *w)	1165	ev_child_stop (EV_P_ struct ev_child *w)
984	{	1166	{
985	ev_clear ((W)w);	1167	ev_clear_pending (EV_A_ (W)w);
986	if (ev_is_active (w))	1168	if (ev_is_active (w))
987	return;	1169	return;
988		1170
989	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1171	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
990	ev_stop ((W)w);	1172	ev_stop (EV_A_ (W)w);
991	}	1173	}
992		1174
993	/*****************************************************************************/	1175	/*****************************************************************************/
994		1176
995	struct ev_once	1177	struct ev_once
…		…
999	void (cb)(int revents, void arg);	1181	void (cb)(int revents, void arg);
1000	void *arg;	1182	void *arg;
1001	};	1183	};
1002		1184
1003	static void	1185	static void
1004	once_cb (struct ev_once *once, int revents)	1186	once_cb (EV_P_ struct ev_once *once, int revents)
1005	{	1187	{
1006	void (cb)(int revents, void arg) = once->cb;	1188	void (cb)(int revents, void arg) = once->cb;
1007	void *arg = once->arg;	1189	void *arg = once->arg;
1008		1190
1009	ev_io_stop (&once->io);	1191	ev_io_stop (EV_A_ &once->io);
1010	ev_timer_stop (&once->to);	1192	ev_timer_stop (EV_A_ &once->to);
1011	free (once);	1193	free (once);
1012		1194
1013	cb (revents, arg);	1195	cb (revents, arg);
1014	}	1196	}
1015		1197
1016	static void	1198	static void
1017	once_cb_io (struct ev_io *w, int revents)	1199	once_cb_io (EV_P_ struct ev_io *w, int revents)
1018	{	1200	{
1019	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);
1020	}	1202	}
1021		1203
1022	static void	1204	static void
1023	once_cb_to (struct ev_timer *w, int revents)	1205	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1024	{	1206	{
1025	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);
1026	}	1208	}
1027		1209
1028	void	1210	void
1029	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)
1030	{	1212	{
1031	struct ev_once *once = malloc (sizeof (struct ev_once));	1213	struct ev_once *once = malloc (sizeof (struct ev_once));
1032		1214
1033	if (!once)	1215	if (!once)
1034	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1216	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
…		…
1039		1221
1040	ev_watcher_init (&once->io, once_cb_io);	1222	ev_watcher_init (&once->io, once_cb_io);
1041	if (fd >= 0)	1223	if (fd >= 0)
1042	{	1224	{
1043	ev_io_set (&once->io, fd, events);	1225	ev_io_set (&once->io, fd, events);
1044	ev_io_start (&once->io);	1226	ev_io_start (EV_A_ &once->io);
1045	}	1227	}
1046		1228
1047	ev_watcher_init (&once->to, once_cb_to);	1229	ev_watcher_init (&once->to, once_cb_to);
1048	if (timeout >= 0.)	1230	if (timeout >= 0.)
1049	{	1231	{
1050	ev_timer_set (&once->to, timeout, 0.);	1232	ev_timer_set (&once->to, timeout, 0.);
1051	ev_timer_start (&once->to);	1233	ev_timer_start (EV_A_ &once->to);
1052	}	1234	}
1053	}	1235	}
1054	}	1236	}
1055		1237
1056	/*****************************************************************************/	1238	/*****************************************************************************/

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Comparing libev/ev.c (file contents): Revision 1.32 by root, Thu Nov 1 09:21:51 2007 UTC vs. Revision 1.53 by root, Sat Nov 3 22:31:11 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.32 by root, Thu Nov 1 09:21:51 2007 UTC vs.
Revision 1.53 by root, Sat Nov 3 22:31:11 2007 UTC