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

Comparing libev/ev.c (file contents):
Revision 1.31 by root, Thu Nov 1 09:05:33 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	{
		217	if (w->pending)
		218	{
		219	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
		220	return;
		221	}
		222
173	w->pending = ++pendingcnt;	223	w->pending = ++pendingcnt [ABSPRI (w)];
174	array_needsize (pendings, pendingmax, pendingcnt, );	224	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
175	pendings [pendingcnt - 1].w = w;	225	pendings [ABSPRI (w)][w->pending - 1].w = w;
176	pendings [pendingcnt - 1].events = events;	226	pendings [ABSPRI (w)][w->pending - 1].events = events;
177	}	227	}
178		228
179	static void	229	static void
180	queue_events (W *events, int eventcnt, int type)	230	queue_events (EV_P_ W *events, int eventcnt, int type)
181	{	231	{
182	int i;	232	int i;
183		233
184	for (i = 0; i < eventcnt; ++i)	234	for (i = 0; i < eventcnt; ++i)
185	event (events [i], type);	235	event (EV_A_ events [i], type);
186	}	236	}
187		237
188	static void	238	static void
189	fd_event (int fd, int events)	239	fd_event (EV_P_ int fd, int events)
190	{	240	{
191	ANFD *anfd = anfds + fd;	241	ANFD *anfd = anfds + fd;
192	struct ev_io *w;	242	struct ev_io *w;
193		243
194	for (w = anfd->head; w; w = w->next)	244	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
195	{	245	{
196	int ev = w->events & events;	246	int ev = w->events & events;
197		247
198	if (ev)	248	if (ev)
199	event ((W)w, ev);	249	event (EV_A_ (W)w, ev);
200	}	250	}
201	}	251	}
202		252
203	/*****************************************************************************/	253	/*****************************************************************************/
204		254
205	static int *fdchanges;
206	static int fdchangemax, fdchangecnt;
207
208	static void	255	static void
209	fd_reify (void)	256	fd_reify (EV_P)
210	{	257	{
211	int i;	258	int i;
212		259
213	for (i = 0; i < fdchangecnt; ++i)	260	for (i = 0; i < fdchangecnt; ++i)
214	{	261	{
…		…
216	ANFD *anfd = anfds + fd;	263	ANFD *anfd = anfds + fd;
217	struct ev_io *w;	264	struct ev_io *w;
218		265
219	int events = 0;	266	int events = 0;
220		267
221	for (w = anfd->head; w; w = w->next)	268	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
222	events \|= w->events;	269	events \|= w->events;
223		270
224	anfd->events &= ~EV_REIFY;	271	anfd->reify = 0;
225		272
226	if (anfd->events != events)	273	if (anfd->events != events)
227	{	274	{
228	method_modify (fd, anfd->events, events);	275	method_modify (EV_A_ fd, anfd->events, events);
229	anfd->events = events;	276	anfd->events = events;
230	}	277	}
231	}	278	}
232		279
233	fdchangecnt = 0;	280	fdchangecnt = 0;
234	}	281	}
235		282
236	static void	283	static void
237	fd_change (int fd)	284	fd_change (EV_P_ int fd)
238	{	285	{
239	if (anfds [fd].events & EV_REIFY \|\| fdchangecnt < 0)	286	if (anfds [fd].reify \|\| fdchangecnt < 0)
240	return;	287	return;
241		288
242	anfds [fd].events \|= EV_REIFY;	289	anfds [fd].reify = 1;
243		290
244	++fdchangecnt;	291	++fdchangecnt;
245	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	292	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
246	fdchanges [fdchangecnt - 1] = fd;	293	fdchanges [fdchangecnt - 1] = fd;
247	}	294	}
248		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
249	/* called on EBADF to verify fds */	308	/* called on EBADF to verify fds */
250	static void	309	static void
251	fd_recheck (void)	310	fd_ebadf (EV_P)
252	{	311	{
253	int fd;	312	int fd;
254		313
255	for (fd = 0; fd < anfdmax; ++fd)	314	for (fd = 0; fd < anfdmax; ++fd)
256	if (anfds [fd].events)	315	if (anfds [fd].events)
257	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
258	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)
259	{	328	{
260	event ((W)anfds [fd].head, EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT);	329	close (fd);
261	ev_io_stop (anfds [fd].head);	330	fd_kill (EV_A_ fd);
		331	return;
262	}	332	}
263	}	333	}
264		334
265	/*****************************************************************************/	335	/*****************************************************************************/
266
267	static struct ev_timer **timers;
268	static int timermax, timercnt;
269
270	static struct ev_periodic **periodics;
271	static int periodicmax, periodiccnt;
272		336
273	static void	337	static void
274	upheap (WT *timers, int k)	338	upheap (WT *timers, int k)
275	{	339	{
276	WT w = timers [k];	340	WT w = timers [k];
…		…
313		377
314	/*****************************************************************************/	378	/*****************************************************************************/
315		379
316	typedef struct	380	typedef struct
317	{	381	{
318	struct ev_signal *head;	382	struct ev_watcher_list *head;
319	sig_atomic_t gotsig;	383	sig_atomic_t volatile gotsig;
320	} ANSIG;	384	} ANSIG;
321		385
322	static ANSIG *signals;	386	static ANSIG *signals;
323	static int signalmax;	387	static int signalmax;
324		388
325	static int sigpipe [2];	389	static int sigpipe [2];
326	static sig_atomic_t gotsig;	390	static sig_atomic_t volatile gotsig;
327	static struct ev_io sigev;
328		391
329	static void	392	static void
330	signals_init (ANSIG *base, int count)	393	signals_init (ANSIG *base, int count)
331	{	394	{
332	while (count--)	395	while (count--)
333	{	396	{
334	base->head = 0;	397	base->head = 0;
335	base->gotsig = 0;	398	base->gotsig = 0;
		399
336	++base;	400	++base;
337	}	401	}
338	}	402	}
339		403
340	static void	404	static void
…		…
342	{	406	{
343	signals [signum - 1].gotsig = 1;	407	signals [signum - 1].gotsig = 1;
344		408
345	if (!gotsig)	409	if (!gotsig)
346	{	410	{
		411	int old_errno = errno;
347	gotsig = 1;	412	gotsig = 1;
348	write (sigpipe [1], &gotsig, 1);	413	write (sigpipe [1], &signum, 1);
		414	errno = old_errno;
349	}	415	}
350	}	416	}
351		417
352	static void	418	static void
353	sigcb (struct ev_io *iow, int revents)	419	sigcb (EV_P_ struct ev_io *iow, int revents)
354	{	420	{
355	struct ev_signal *w;	421	struct ev_watcher_list *w;
356	int sig;	422	int signum;
357		423
		424	read (sigpipe [0], &revents, 1);
358	gotsig = 0;	425	gotsig = 0;
359	read (sigpipe [0], &revents, 1);
360		426
361	for (sig = signalmax; sig--; )	427	for (signum = signalmax; signum--; )
362	if (signals [sig].gotsig)	428	if (signals [signum].gotsig)
363	{	429	{
364	signals [sig].gotsig = 0;	430	signals [signum].gotsig = 0;
365		431
366	for (w = signals [sig].head; w; w = w->next)	432	for (w = signals [signum].head; w; w = w->next)
367	event ((W)w, EV_SIGNAL);	433	event (EV_A_ (W)w, EV_SIGNAL);
368	}	434	}
369	}	435	}
370		436
371	static void	437	static void
372	siginit (void)	438	siginit (EV_P)
373	{	439	{
		440	#ifndef WIN32
374	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	441	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
375	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	442	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
376		443
377	/* rather than sort out wether we really need nb, set it */	444	/* rather than sort out wether we really need nb, set it */
378	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	445	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
379	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	446	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		447	#endif
380		448
381	ev_io_set (&sigev, sigpipe [0], EV_READ);	449	ev_io_set (&sigev, sigpipe [0], EV_READ);
382	ev_io_start (&sigev);	450	ev_io_start (&sigev);
		451	ev_unref (EV_A); /* child watcher should not keep loop alive */
383	}	452	}
384		453
385	/*****************************************************************************/	454	/*****************************************************************************/
386		455
387	static struct ev_idle **idles;	456	#ifndef WIN32
388	static int idlemax, idlecnt;
389
390	static struct ev_prepare **prepares;
391	static int preparemax, preparecnt;
392
393	static struct ev_check **checks;
394	static int checkmax, checkcnt;
395
396	/*****************************************************************************/
397
398	static struct ev_child *childs [PID_HASHSIZE];
399	static struct ev_signal childev;
400		457
401	#ifndef WCONTINUED	458	#ifndef WCONTINUED
402	# define WCONTINUED 0	459	# define WCONTINUED 0
403	#endif	460	#endif
404		461
405	static void	462	static void
406	childcb (struct ev_signal *sw, int revents)	463	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
407	{	464	{
408	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	{
409	int pid, status;	480	int pid, status;
410		481
411	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	482	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
412	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	483	{
413	if (w->pid == pid \|\| w->pid == -1)	484	/* make sure we are called again until all childs have been reaped */
414	{	485	event (EV_A_ (W)sw, EV_SIGNAL);
415	w->status = status;	486
416	event ((W)w, EV_CHILD);	487	child_reap (EV_A_ sw, pid, pid, status);
417	}	488	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		489	}
418	}	490	}
		491
		492	#endif
419		493
420	/*****************************************************************************/	494	/*****************************************************************************/
421		495
		496	#if EV_USE_KQUEUE
		497	# include "ev_kqueue.c"
		498	#endif
422	#if EV_USE_EPOLL	499	#if EV_USE_EPOLL
423	# include "ev_epoll.c"	500	# include "ev_epoll.c"
424	#endif	501	#endif
		502	#if EV_USEV_POLL
		503	# include "ev_poll.c"
		504	#endif
425	#if EV_USE_SELECT	505	#if EV_USE_SELECT
426	# include "ev_select.c"	506	# include "ev_select.c"
427	#endif	507	#endif
428		508
429	int	509	int
…		…
436	ev_version_minor (void)	516	ev_version_minor (void)
437	{	517	{
438	return EV_VERSION_MINOR;	518	return EV_VERSION_MINOR;
439	}	519	}
440		520
441	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)
442	{	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
443	if (!ev_method)	546	if (!method)
444	{	547	{
445	#if EV_USE_MONOTONIC	548	#if EV_USE_MONOTONIC
446	{	549	{
447	struct timespec ts;	550	struct timespec ts;
448	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	551	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
449	have_monotonic = 1;	552	have_monotonic = 1;
450	}	553	}
451	#endif	554	#endif
452		555
453	ev_now = ev_time ();	556	rt_now = ev_time ();
454	now = get_clock ();	557	mn_now = get_clock ();
		558	now_floor = mn_now;
455	diff = ev_now - now;	559	diff = rt_now - mn_now;
456		560
457	if (pipe (sigpipe))	561	if (pipe (sigpipe))
458	return 0;	562	return 0;
459		563
		564	if (methods == EVMETHOD_AUTO)
		565	if (!enable_secure () && getenv ("LIBmethodS"))
		566	methods = atoi (getenv ("LIBmethodS"));
		567	else
460	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
461	#if EV_USE_EPOLL	574	#if EV_USE_EPOLL
462	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);
463	#endif	579	#endif
464	#if EV_USE_SELECT	580	#if EV_USE_SELECT
465	if (ev_method == EVMETHOD_NONE) select_init (flags);	581	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
466	#endif	582	#endif
467		583
468	if (ev_method)	584	if (method)
469	{	585	{
470	ev_watcher_init (&sigev, sigcb);	586	ev_watcher_init (&sigev, sigcb);
		587	ev_set_priority (&sigev, EV_MAXPRI);
471	siginit ();	588	siginit (EV_A);
472		589
		590	#ifndef WIN32
473	ev_signal_init (&childev, childcb, SIGCHLD);	591	ev_signal_init (&childev, childcb, SIGCHLD);
		592	ev_set_priority (&childev, EV_MAXPRI);
474	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
475	}	596	}
476	}	597	}
477		598
478	return ev_method;	599	return method;
479	}	600	}
480		601
481	/*****************************************************************************/	602	/*****************************************************************************/
482		603
483	void	604	void
484	ev_prefork (void)	605	ev_fork_prepare (void)
485	{	606	{
486	/* nop */	607	/* nop */
487	}	608	}
488		609
489	void	610	void
490	ev_postfork_parent (void)	611	ev_fork_parent (void)
491	{	612	{
492	/* nop */	613	/* nop */
493	}	614	}
494		615
495	void	616	void
496	ev_postfork_child (void)	617	ev_fork_child (void)
497	{	618	{
498	#if EV_USE_EPOLL	619	#if EV_USE_EPOLL
499	if (ev_method == EVMETHOD_EPOLL)	620	if (method == EVMETHOD_EPOLL)
500	epoll_postfork_child ();	621	epoll_postfork_child ();
501	#endif	622	#endif
502		623
503	ev_io_stop (&sigev);	624	ev_io_stop (&sigev);
504	close (sigpipe [0]);	625	close (sigpipe [0]);
…		…
508	}	629	}
509		630
510	/*****************************************************************************/	631	/*****************************************************************************/
511		632
512	static void	633	static void
513	call_pending (void)	634	call_pending (EV_P)
514	{	635	{
		636	int pri;
		637
		638	for (pri = NUMPRI; pri--; )
515	while (pendingcnt)	639	while (pendingcnt [pri])
516	{	640	{
517	ANPENDING *p = pendings + --pendingcnt;	641	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
518		642
519	if (p->w)	643	if (p->w)
520	{	644	{
521	p->w->pending = 0;	645	p->w->pending = 0;
522	p->w->cb (p->w, p->events);	646	p->w->cb (EV_A_ p->w, p->events);
523	}	647	}
524	}	648	}
525	}	649	}
526		650
527	static void	651	static void
528	timers_reify (void)	652	timers_reify (EV_P)
529	{	653	{
530	while (timercnt && timers [0]->at <= now)	654	while (timercnt && timers [0]->at <= mn_now)
531	{	655	{
532	struct ev_timer *w = timers [0];	656	struct ev_timer *w = timers [0];
533		657
534	/* first reschedule or stop timer */	658	/* first reschedule or stop timer */
535	if (w->repeat)	659	if (w->repeat)
536	{	660	{
		661	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
537	w->at = now + w->repeat;	662	w->at = mn_now + w->repeat;
538	assert (("timer timeout in the past, negative repeat?", w->at > now));
539	downheap ((WT *)timers, timercnt, 0);	663	downheap ((WT *)timers, timercnt, 0);
540	}	664	}
541	else	665	else
542	ev_timer_stop (w); /* nonrepeating: stop timer */	666	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
543		667
544	event ((W)w, EV_TIMEOUT);	668	event ((W)w, EV_TIMEOUT);
545	}	669	}
546	}	670	}
547		671
548	static void	672	static void
549	periodics_reify (void)	673	periodics_reify (EV_P)
550	{	674	{
551	while (periodiccnt && periodics [0]->at <= ev_now)	675	while (periodiccnt && periodics [0]->at <= rt_now)
552	{	676	{
553	struct ev_periodic *w = periodics [0];	677	struct ev_periodic *w = periodics [0];
554		678
555	/* first reschedule or stop timer */	679	/* first reschedule or stop timer */
556	if (w->interval)	680	if (w->interval)
557	{	681	{
558	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;
559	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));
560	downheap ((WT *)periodics, periodiccnt, 0);	684	downheap ((WT *)periodics, periodiccnt, 0);
561	}	685	}
562	else	686	else
563	ev_periodic_stop (w); /* nonrepeating: stop timer */	687	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
564		688
565	event ((W)w, EV_TIMEOUT);	689	event (EV_A_ (W)w, EV_PERIODIC);
566	}	690	}
567	}	691	}
568		692
569	static void	693	static void
570	periodics_reschedule (ev_tstamp diff)	694	periodics_reschedule (EV_P_ ev_tstamp diff)
571	{	695	{
572	int i;	696	int i;
573		697
574	/* adjust periodics after time jump */	698	/* adjust periodics after time jump */
575	for (i = 0; i < periodiccnt; ++i)	699	for (i = 0; i < periodiccnt; ++i)
576	{	700	{
577	struct ev_periodic *w = periodics [i];	701	struct ev_periodic *w = periodics [i];
578		702
579	if (w->interval)	703	if (w->interval)
580	{	704	{
581	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;
582		706
583	if (fabs (diff) >= 1e-4)	707	if (fabs (diff) >= 1e-4)
584	{	708	{
585	ev_periodic_stop (w);	709	ev_periodic_stop (EV_A_ w);
586	ev_periodic_start (w);	710	ev_periodic_start (EV_A_ w);
587		711
588	i = 0; /* restart loop, inefficient, but time jumps should be rare */	712	i = 0; /* restart loop, inefficient, but time jumps should be rare */
589	}	713	}
590	}	714	}
591	}	715	}
592	}	716	}
593		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
594	static void	736	static void
595	time_update (void)	737	time_update (EV_P)
596	{	738	{
597	int i;	739	int i;
598		740
599	ev_now = ev_time ();	741	#if EV_USE_MONOTONIC
600
601	if (have_monotonic)	742	if (expect_true (have_monotonic))
602	{	743	{
603	ev_tstamp odiff = diff;	744	if (time_update_monotonic (EV_A))
604
605	for (i = 4; --i; ) /* loop a few times, before making important decisions */
606	{	745	{
607	now = get_clock ();	746	ev_tstamp odiff = diff;
		747
		748	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		749	{
608	diff = ev_now - now;	750	diff = rt_now - mn_now;
609		751
610	if (fabs (odiff - diff) < MIN_TIMEJUMP)	752	if (fabs (odiff - diff) < MIN_TIMEJUMP)
611	return; /* all is well */	753	return; /* all is well */
612		754
613	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 */
614	}	762	}
615
616	periodics_reschedule (diff - odiff);
617	/* no timer adjustment, as the monotonic clock doesn't jump */
618	}	763	}
619	else	764	else
		765	#endif
620	{	766	{
621	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))
622	{	770	{
623	periodics_reschedule (ev_now - now);	771	periodics_reschedule (EV_A_ rt_now - mn_now);
624		772
625	/* 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 */
626	for (i = 0; i < timercnt; ++i)	774	for (i = 0; i < timercnt; ++i)
627	timers [i]->at += diff;	775	timers [i]->at += diff;
628	}	776	}
629		777
630	now = ev_now;	778	mn_now = rt_now;
631	}	779	}
632	}	780	}
633		781
634	int ev_loop_done;	782	void
		783	ev_ref (EV_P)
		784	{
		785	++activecnt;
		786	}
635		787
		788	void
		789	ev_unref (EV_P)
		790	{
		791	--activecnt;
		792	}
		793
		794	static int loop_done;
		795
		796	void
636	void ev_loop (int flags)	797	ev_loop (EV_P_ int flags)
637	{	798	{
638	double block;	799	double block;
639	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	800	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
640		801
641	do	802	do
642	{	803	{
643	/* queue check watchers (and execute them) */	804	/* queue check watchers (and execute them) */
644	if (preparecnt)	805	if (expect_false (preparecnt))
645	{	806	{
646	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	807	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
647	call_pending ();	808	call_pending (EV_A);
648	}	809	}
649		810
650	/* update fd-related kernel structures */	811	/* update fd-related kernel structures */
651	fd_reify ();	812	fd_reify (EV_A);
652		813
653	/* calculate blocking time */	814	/* calculate blocking time */
654		815
655	/* 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
656	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	{
657	ev_now = ev_time ();	824	rt_now = ev_time ();
		825	mn_now = rt_now;
		826	}
658		827
659	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	828	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
660	block = 0.;	829	block = 0.;
661	else	830	else
662	{	831	{
663	block = MAX_BLOCKTIME;	832	block = MAX_BLOCKTIME;
664		833
665	if (timercnt)	834	if (timercnt)
666	{	835	{
667	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;
668	if (block > to) block = to;	837	if (block > to) block = to;
669	}	838	}
670		839
671	if (periodiccnt)	840	if (periodiccnt)
672	{	841	{
673	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	842	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
674	if (block > to) block = to;	843	if (block > to) block = to;
675	}	844	}
676		845
677	if (block < 0.) block = 0.;	846	if (block < 0.) block = 0.;
678	}	847	}
679		848
680	method_poll (block);	849	method_poll (EV_A_ block);
681		850
682	/* update ev_now, do magic */	851	/* update rt_now, do magic */
683	time_update ();	852	time_update (EV_A);
684		853
685	/* queue pending timers and reschedule them */	854	/* queue pending timers and reschedule them */
686	timers_reify (); /* relative timers called last */	855	timers_reify (EV_A); /* relative timers called last */
687	periodics_reify (); /* absolute timers called first */	856	periodics_reify (EV_A); /* absolute timers called first */
688		857
689	/* queue idle watchers unless io or timers are pending */	858	/* queue idle watchers unless io or timers are pending */
690	if (!pendingcnt)	859	if (!pendingcnt)
691	queue_events ((W *)idles, idlecnt, EV_IDLE);	860	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
692		861
693	/* queue check watchers, to be executed first */	862	/* queue check watchers, to be executed first */
694	if (checkcnt)	863	if (checkcnt)
695	queue_events ((W *)checks, checkcnt, EV_CHECK);	864	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
696		865
697	call_pending ();	866	call_pending (EV_A);
698	}	867	}
699	while (!ev_loop_done);	868	while (activecnt && !loop_done);
700		869
701	if (ev_loop_done != 2)	870	if (loop_done != 2)
702	ev_loop_done = 0;	871	loop_done = 0;
		872	}
		873
		874	void
		875	ev_unloop (EV_P_ int how)
		876	{
		877	loop_done = how;
703	}	878	}
704		879
705	/*****************************************************************************/	880	/*****************************************************************************/
706		881
707	static void	882	inline void
708	wlist_add (WL *head, WL elem)	883	wlist_add (WL *head, WL elem)
709	{	884	{
710	elem->next = *head;	885	elem->next = *head;
711	*head = elem;	886	*head = elem;
712	}	887	}
713		888
714	static void	889	inline void
715	wlist_del (WL *head, WL elem)	890	wlist_del (WL *head, WL elem)
716	{	891	{
717	while (*head)	892	while (*head)
718	{	893	{
719	if (*head == elem)	894	if (*head == elem)
…		…
724		899
725	head = &(*head)->next;	900	head = &(*head)->next;
726	}	901	}
727	}	902	}
728		903
729	static void	904	inline void
730	ev_clear (W w)	905	ev_clear_pending (EV_P_ W w)
731	{	906	{
732	if (w->pending)	907	if (w->pending)
733	{	908	{
734	pendings [w->pending - 1].w = 0;	909	pendings [ABSPRI (w)][w->pending - 1].w = 0;
735	w->pending = 0;	910	w->pending = 0;
736	}	911	}
737	}	912	}
738		913
739	static void	914	inline void
740	ev_start (W w, int active)	915	ev_start (EV_P_ W w, int active)
741	{	916	{
		917	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		918	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		919
742	w->active = active;	920	w->active = active;
		921	ev_ref (EV_A);
743	}	922	}
744		923
745	static void	924	inline void
746	ev_stop (W w)	925	ev_stop (EV_P_ W w)
747	{	926	{
		927	ev_unref (EV_A);
748	w->active = 0;	928	w->active = 0;
749	}	929	}
750		930
751	/*****************************************************************************/	931	/*****************************************************************************/
752		932
753	void	933	void
754	ev_io_start (struct ev_io *w)	934	ev_io_start (EV_P_ struct ev_io *w)
755	{	935	{
		936	int fd = w->fd;
		937
756	if (ev_is_active (w))	938	if (ev_is_active (w))
757	return;	939	return;
758		940
759	int fd = w->fd;	941	assert (("ev_io_start called with negative fd", fd >= 0));
760		942
761	ev_start ((W)w, 1);	943	ev_start (EV_A_ (W)w, 1);
762	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	944	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
763	wlist_add ((WL *)&anfds[fd].head, (WL)w);	945	wlist_add ((WL *)&anfds[fd].head, (WL)w);
764		946
765	fd_change (fd);	947	fd_change (EV_A_ fd);
766	}	948	}
767		949
768	void	950	void
769	ev_io_stop (struct ev_io *w)	951	ev_io_stop (EV_P_ struct ev_io *w)
770	{	952	{
771	ev_clear ((W)w);	953	ev_clear_pending (EV_A_ (W)w);
772	if (!ev_is_active (w))	954	if (!ev_is_active (w))
773	return;	955	return;
774		956
775	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	957	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
776	ev_stop ((W)w);	958	ev_stop (EV_A_ (W)w);
777		959
778	fd_change (w->fd);	960	fd_change (EV_A_ w->fd);
779	}	961	}
780		962
781	void	963	void
782	ev_timer_start (struct ev_timer *w)	964	ev_timer_start (EV_P_ struct ev_timer *w)
783	{	965	{
784	if (ev_is_active (w))	966	if (ev_is_active (w))
785	return;	967	return;
786		968
787	w->at += now;	969	w->at += mn_now;
788		970
789	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.));
790		972
791	ev_start ((W)w, ++timercnt);	973	ev_start (EV_A_ (W)w, ++timercnt);
792	array_needsize (timers, timermax, timercnt, );	974	array_needsize (timers, timermax, timercnt, );
793	timers [timercnt - 1] = w;	975	timers [timercnt - 1] = w;
794	upheap ((WT *)timers, timercnt - 1);	976	upheap ((WT *)timers, timercnt - 1);
795	}	977	}
796		978
797	void	979	void
798	ev_timer_stop (struct ev_timer *w)	980	ev_timer_stop (EV_P_ struct ev_timer *w)
799	{	981	{
800	ev_clear ((W)w);	982	ev_clear_pending (EV_A_ (W)w);
801	if (!ev_is_active (w))	983	if (!ev_is_active (w))
802	return;	984	return;
803		985
804	if (w->active < timercnt--)	986	if (w->active < timercnt--)
805	{	987	{
…		…
807	downheap ((WT *)timers, timercnt, w->active - 1);	989	downheap ((WT *)timers, timercnt, w->active - 1);
808	}	990	}
809		991
810	w->at = w->repeat;	992	w->at = w->repeat;
811		993
812	ev_stop ((W)w);	994	ev_stop (EV_A_ (W)w);
813	}	995	}
814		996
815	void	997	void
816	ev_timer_again (struct ev_timer *w)	998	ev_timer_again (EV_P_ struct ev_timer *w)
817	{	999	{
818	if (ev_is_active (w))	1000	if (ev_is_active (w))
819	{	1001	{
820	if (w->repeat)	1002	if (w->repeat)
821	{	1003	{
822	w->at = now + w->repeat;	1004	w->at = mn_now + w->repeat;
823	downheap ((WT *)timers, timercnt, w->active - 1);	1005	downheap ((WT *)timers, timercnt, w->active - 1);
824	}	1006	}
825	else	1007	else
826	ev_timer_stop (w);	1008	ev_timer_stop (EV_A_ w);
827	}	1009	}
828	else if (w->repeat)	1010	else if (w->repeat)
829	ev_timer_start (w);	1011	ev_timer_start (EV_A_ w);
830	}	1012	}
831		1013
832	void	1014	void
833	ev_periodic_start (struct ev_periodic *w)	1015	ev_periodic_start (EV_P_ struct ev_periodic *w)
834	{	1016	{
835	if (ev_is_active (w))	1017	if (ev_is_active (w))
836	return;	1018	return;
837		1019
838	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.));
839		1021
840	/* 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 */
841	if (w->interval)	1023	if (w->interval)
842	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1024	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
843		1025
844	ev_start ((W)w, ++periodiccnt);	1026	ev_start (EV_A_ (W)w, ++periodiccnt);
845	array_needsize (periodics, periodicmax, periodiccnt, );	1027	array_needsize (periodics, periodicmax, periodiccnt, );
846	periodics [periodiccnt - 1] = w;	1028	periodics [periodiccnt - 1] = w;
847	upheap ((WT *)periodics, periodiccnt - 1);	1029	upheap ((WT *)periodics, periodiccnt - 1);
848	}	1030	}
849		1031
850	void	1032	void
851	ev_periodic_stop (struct ev_periodic *w)	1033	ev_periodic_stop (EV_P_ struct ev_periodic *w)
852	{	1034	{
853	ev_clear ((W)w);	1035	ev_clear_pending (EV_A_ (W)w);
854	if (!ev_is_active (w))	1036	if (!ev_is_active (w))
855	return;	1037	return;
856		1038
857	if (w->active < periodiccnt--)	1039	if (w->active < periodiccnt--)
858	{	1040	{
859	periodics [w->active - 1] = periodics [periodiccnt];	1041	periodics [w->active - 1] = periodics [periodiccnt];
860	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1042	downheap ((WT *)periodics, periodiccnt, w->active - 1);
861	}	1043	}
862		1044
863	ev_stop ((W)w);	1045	ev_stop (EV_A_ (W)w);
864	}	1046	}
865		1047
		1048	#ifndef SA_RESTART
		1049	# define SA_RESTART 0
		1050	#endif
		1051
866	void	1052	void
867	ev_signal_start (struct ev_signal *w)	1053	ev_signal_start (EV_P_ struct ev_signal *w)
868	{	1054	{
869	if (ev_is_active (w))	1055	if (ev_is_active (w))
870	return;	1056	return;
871		1057
		1058	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1059
872	ev_start ((W)w, 1);	1060	ev_start (EV_A_ (W)w, 1);
873	array_needsize (signals, signalmax, w->signum, signals_init);	1061	array_needsize (signals, signalmax, w->signum, signals_init);
874	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1062	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
875		1063
876	if (!w->next)	1064	if (!w->next)
877	{	1065	{
878	struct sigaction sa;	1066	struct sigaction sa;
879	sa.sa_handler = sighandler;	1067	sa.sa_handler = sighandler;
880	sigfillset (&sa.sa_mask);	1068	sigfillset (&sa.sa_mask);
881	sa.sa_flags = 0;	1069	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
882	sigaction (w->signum, &sa, 0);	1070	sigaction (w->signum, &sa, 0);
883	}	1071	}
884	}	1072	}
885		1073
886	void	1074	void
887	ev_signal_stop (struct ev_signal *w)	1075	ev_signal_stop (EV_P_ struct ev_signal *w)
888	{	1076	{
889	ev_clear ((W)w);	1077	ev_clear_pending (EV_A_ (W)w);
890	if (!ev_is_active (w))	1078	if (!ev_is_active (w))
891	return;	1079	return;
892		1080
893	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1081	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
894	ev_stop ((W)w);	1082	ev_stop (EV_A_ (W)w);
895		1083
896	if (!signals [w->signum - 1].head)	1084	if (!signals [w->signum - 1].head)
897	signal (w->signum, SIG_DFL);	1085	signal (w->signum, SIG_DFL);
898	}	1086	}
899		1087
900	void	1088	void
901	ev_idle_start (struct ev_idle *w)	1089	ev_idle_start (EV_P_ struct ev_idle *w)
902	{	1090	{
903	if (ev_is_active (w))	1091	if (ev_is_active (w))
904	return;	1092	return;
905		1093
906	ev_start ((W)w, ++idlecnt);	1094	ev_start (EV_A_ (W)w, ++idlecnt);
907	array_needsize (idles, idlemax, idlecnt, );	1095	array_needsize (idles, idlemax, idlecnt, );
908	idles [idlecnt - 1] = w;	1096	idles [idlecnt - 1] = w;
909	}	1097	}
910		1098
911	void	1099	void
912	ev_idle_stop (struct ev_idle *w)	1100	ev_idle_stop (EV_P_ struct ev_idle *w)
913	{	1101	{
914	ev_clear ((W)w);	1102	ev_clear_pending (EV_A_ (W)w);
915	if (ev_is_active (w))	1103	if (ev_is_active (w))
916	return;	1104	return;
917		1105
918	idles [w->active - 1] = idles [--idlecnt];	1106	idles [w->active - 1] = idles [--idlecnt];
919	ev_stop ((W)w);	1107	ev_stop (EV_A_ (W)w);
920	}	1108	}
921		1109
922	void	1110	void
923	ev_prepare_start (struct ev_prepare *w)	1111	ev_prepare_start (EV_P_ struct ev_prepare *w)
924	{	1112	{
925	if (ev_is_active (w))	1113	if (ev_is_active (w))
926	return;	1114	return;
927		1115
928	ev_start ((W)w, ++preparecnt);	1116	ev_start (EV_A_ (W)w, ++preparecnt);
929	array_needsize (prepares, preparemax, preparecnt, );	1117	array_needsize (prepares, preparemax, preparecnt, );
930	prepares [preparecnt - 1] = w;	1118	prepares [preparecnt - 1] = w;
931	}	1119	}
932		1120
933	void	1121	void
934	ev_prepare_stop (struct ev_prepare *w)	1122	ev_prepare_stop (EV_P_ struct ev_prepare *w)
935	{	1123	{
936	ev_clear ((W)w);	1124	ev_clear_pending (EV_A_ (W)w);
937	if (ev_is_active (w))	1125	if (ev_is_active (w))
938	return;	1126	return;
939		1127
940	prepares [w->active - 1] = prepares [--preparecnt];	1128	prepares [w->active - 1] = prepares [--preparecnt];
941	ev_stop ((W)w);	1129	ev_stop (EV_A_ (W)w);
942	}	1130	}
943		1131
944	void	1132	void
945	ev_check_start (struct ev_check *w)	1133	ev_check_start (EV_P_ struct ev_check *w)
946	{	1134	{
947	if (ev_is_active (w))	1135	if (ev_is_active (w))
948	return;	1136	return;
949		1137
950	ev_start ((W)w, ++checkcnt);	1138	ev_start (EV_A_ (W)w, ++checkcnt);
951	array_needsize (checks, checkmax, checkcnt, );	1139	array_needsize (checks, checkmax, checkcnt, );
952	checks [checkcnt - 1] = w;	1140	checks [checkcnt - 1] = w;
953	}	1141	}
954		1142
955	void	1143	void
956	ev_check_stop (struct ev_check *w)	1144	ev_check_stop (EV_P_ struct ev_check *w)
957	{	1145	{
958	ev_clear ((W)w);	1146	ev_clear_pending (EV_A_ (W)w);
959	if (ev_is_active (w))	1147	if (ev_is_active (w))
960	return;	1148	return;
961		1149
962	checks [w->active - 1] = checks [--checkcnt];	1150	checks [w->active - 1] = checks [--checkcnt];
963	ev_stop ((W)w);	1151	ev_stop (EV_A_ (W)w);
964	}	1152	}
965		1153
966	void	1154	void
967	ev_child_start (struct ev_child *w)	1155	ev_child_start (EV_P_ struct ev_child *w)
968	{	1156	{
969	if (ev_is_active (w))	1157	if (ev_is_active (w))
970	return;	1158	return;
971		1159
972	ev_start ((W)w, 1);	1160	ev_start (EV_A_ (W)w, 1);
973	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1161	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
974	}	1162	}
975		1163
976	void	1164	void
977	ev_child_stop (struct ev_child *w)	1165	ev_child_stop (EV_P_ struct ev_child *w)
978	{	1166	{
979	ev_clear ((W)w);	1167	ev_clear_pending (EV_A_ (W)w);
980	if (ev_is_active (w))	1168	if (ev_is_active (w))
981	return;	1169	return;
982		1170
983	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1171	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
984	ev_stop ((W)w);	1172	ev_stop (EV_A_ (W)w);
985	}	1173	}
986		1174
987	/*****************************************************************************/	1175	/*****************************************************************************/
988		1176
989	struct ev_once	1177	struct ev_once
…		…
993	void (cb)(int revents, void arg);	1181	void (cb)(int revents, void arg);
994	void *arg;	1182	void *arg;
995	};	1183	};
996		1184
997	static void	1185	static void
998	once_cb (struct ev_once *once, int revents)	1186	once_cb (EV_P_ struct ev_once *once, int revents)
999	{	1187	{
1000	void (cb)(int revents, void arg) = once->cb;	1188	void (cb)(int revents, void arg) = once->cb;
1001	void *arg = once->arg;	1189	void *arg = once->arg;
1002		1190
1003	ev_io_stop (&once->io);	1191	ev_io_stop (EV_A_ &once->io);
1004	ev_timer_stop (&once->to);	1192	ev_timer_stop (EV_A_ &once->to);
1005	free (once);	1193	free (once);
1006		1194
1007	cb (revents, arg);	1195	cb (revents, arg);
1008	}	1196	}
1009		1197
1010	static void	1198	static void
1011	once_cb_io (struct ev_io *w, int revents)	1199	once_cb_io (EV_P_ struct ev_io *w, int revents)
1012	{	1200	{
1013	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);
1014	}	1202	}
1015		1203
1016	static void	1204	static void
1017	once_cb_to (struct ev_timer *w, int revents)	1205	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1018	{	1206	{
1019	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);
1020	}	1208	}
1021		1209
1022	void	1210	void
1023	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)
1024	{	1212	{
1025	struct ev_once *once = malloc (sizeof (struct ev_once));	1213	struct ev_once *once = malloc (sizeof (struct ev_once));
1026		1214
1027	if (!once)	1215	if (!once)
1028	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1216	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
…		…
1033		1221
1034	ev_watcher_init (&once->io, once_cb_io);	1222	ev_watcher_init (&once->io, once_cb_io);
1035	if (fd >= 0)	1223	if (fd >= 0)
1036	{	1224	{
1037	ev_io_set (&once->io, fd, events);	1225	ev_io_set (&once->io, fd, events);
1038	ev_io_start (&once->io);	1226	ev_io_start (EV_A_ &once->io);
1039	}	1227	}
1040		1228
1041	ev_watcher_init (&once->to, once_cb_to);	1229	ev_watcher_init (&once->to, once_cb_to);
1042	if (timeout >= 0.)	1230	if (timeout >= 0.)
1043	{	1231	{
1044	ev_timer_set (&once->to, timeout, 0.);	1232	ev_timer_set (&once->to, timeout, 0.);
1045	ev_timer_start (&once->to);	1233	ev_timer_start (EV_A_ &once->to);
1046	}	1234	}
1047	}	1235	}
1048	}	1236	}
1049		1237
1050	/*****************************************************************************/	1238	/*****************************************************************************/

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Comparing libev/ev.c (file contents): Revision 1.31 by root, Thu Nov 1 09:05:33 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 1.31 by root, Thu Nov 1 09:05:33 2007 UTC vs.
Revision 1.53 by root, Sat Nov 3 22:31:11 2007 UTC