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

Comparing libev/ev.c (file contents):
Revision 1.23 by root, Wed Oct 31 20:10:17 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	*/
		31	#ifndef EV_STANDALONE
		32	# include "config.h"
		33	#endif
29		34
30	#include <math.h>	35	#include <math.h>
31	#include <stdlib.h>	36	#include <stdlib.h>
32	#include <unistd.h>	37	#include <unistd.h>
33	#include <fcntl.h>	38	#include <fcntl.h>
…		…
37	#include <stdio.h>	42	#include <stdio.h>
38		43
39	#include <assert.h>	44	#include <assert.h>
40	#include <errno.h>	45	#include <errno.h>
41	#include <sys/types.h>	46	#include <sys/types.h>
		47	#ifndef WIN32
42	#include <sys/wait.h>	48	# include <sys/wait.h>
		49	#endif
43	#include <sys/time.h>	50	#include <sys/time.h>
44	#include <time.h>	51	#include <time.h>
45		52
		53	/**/
		54
46	#ifndef HAVE_MONOTONIC	55	#ifndef EV_USE_MONOTONIC
		56	# define EV_USE_MONOTONIC 1
		57	#endif
		58
		59	#ifndef EV_USE_SELECT
		60	# define EV_USE_SELECT 1
		61	#endif
		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
		67	#ifndef EV_USE_EPOLL
		68	# define EV_USE_EPOLL 0
		69	#endif
		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
47	# ifdef CLOCK_MONOTONIC	81	#ifndef CLOCK_MONOTONIC
		82	# undef EV_USE_MONOTONIC
48	# define HAVE_MONOTONIC 1	83	# define EV_USE_MONOTONIC 0
49	# endif	84	#endif
50	#endif
51		85
52	#ifndef HAVE_SELECT
53	# define HAVE_SELECT 1
54	#endif
55
56	#ifndef HAVE_EPOLL
57	# define HAVE_EPOLL 0
58	#endif
59
60	#ifndef HAVE_REALTIME	86	#ifndef CLOCK_REALTIME
61	# define HAVE_REALTIME 1 /* posix requirement, but might be slower */	87	# undef EV_USE_REALTIME
		88	# define EV_USE_REALTIME 0
62	#endif	89	#endif
		90
		91	/**/
63		92
64	#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) */
65	#define MAX_BLOCKTIME 60.	94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
66	#define PID_HASHSIZE 16 /* size of pid hahs table, must be power of two */	95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
		96	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
67		97
68	#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)
69		113
70	typedef struct ev_watcher *W;	114	typedef struct ev_watcher *W;
71	typedef struct ev_watcher_list *WL;	115	typedef struct ev_watcher_list *WL;
72	typedef struct ev_watcher_time *WT;	116	typedef struct ev_watcher_time *WT;
73		117
74	static ev_tstamp now, diff; /* monotonic clock */
75	ev_tstamp ev_now;
76	int ev_method;
77
78	static int have_monotonic; /* runtime */
79
80	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
81	static void (*method_modify)(int fd, int oev, int nev);
82	static void (*method_poll)(ev_tstamp timeout);
83
84	/*****************************************************************************/	118	/*****************************************************************************/
85		119
86	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
87	ev_time (void)	148	ev_time (void)
88	{	149	{
89	#if HAVE_REALTIME	150	#if EV_USE_REALTIME
90	struct timespec ts;	151	struct timespec ts;
91	clock_gettime (CLOCK_REALTIME, &ts);	152	clock_gettime (CLOCK_REALTIME, &ts);
92	return ts.tv_sec + ts.tv_nsec * 1e-9;	153	return ts.tv_sec + ts.tv_nsec * 1e-9;
93	#else	154	#else
94	struct timeval tv;	155	struct timeval tv;
95	gettimeofday (&tv, 0);	156	gettimeofday (&tv, 0);
96	return tv.tv_sec + tv.tv_usec * 1e-6;	157	return tv.tv_sec + tv.tv_usec * 1e-6;
97	#endif	158	#endif
98	}	159	}
99		160
100	static ev_tstamp	161	inline ev_tstamp
101	get_clock (void)	162	get_clock (void)
102	{	163	{
103	#if HAVE_MONOTONIC	164	#if EV_USE_MONOTONIC
104	if (have_monotonic)	165	if (expect_true (have_monotonic))
105	{	166	{
106	struct timespec ts;	167	struct timespec ts;
107	clock_gettime (CLOCK_MONOTONIC, &ts);	168	clock_gettime (CLOCK_MONOTONIC, &ts);
108	return ts.tv_sec + ts.tv_nsec * 1e-9;	169	return ts.tv_sec + ts.tv_nsec * 1e-9;
109	}	170	}
110	#endif	171	#endif
111		172
112	return ev_time ();	173	return ev_time ();
113	}	174	}
114		175
		176	ev_tstamp
		177	ev_now (EV_P)
		178	{
		179	return rt_now;
		180	}
		181
		182	#define array_roundsize(base,n) ((n) \| 4 & ~3)
		183
115	#define array_needsize(base,cur,cnt,init) \	184	#define array_needsize(base,cur,cnt,init) \
116	if ((cnt) > cur) \	185	if (expect_false ((cnt) > cur)) \
117	{ \	186	{ \
118	int newcnt = cur; \	187	int newcnt = cur; \
119	do \	188	do \
120	{ \	189	{ \
121	newcnt = (newcnt << 1) \| 4 & ~3; \	190	newcnt = array_roundsize (base, newcnt << 1); \
122	} \	191	} \
123	while ((cnt) > newcnt); \	192	while ((cnt) > newcnt); \
124	\	193	\
125	base = realloc (base, sizeof (base) (newcnt)); \	194	base = realloc (base, sizeof (base) (newcnt)); \
126	init (base + cur, newcnt - cur); \	195	init (base + cur, newcnt - cur); \
127	cur = newcnt; \	196	cur = newcnt; \
128	}	197	}
129		198
130	/*****************************************************************************/	199	/*****************************************************************************/
131		200
132	typedef struct
133	{
134	struct ev_io *head;
135	unsigned char wev, rev; /* want, received event set */
136	} ANFD;
137
138	static ANFD *anfds;
139	static int anfdmax;
140
141	static int *fdchanges;
142	static int fdchangemax, fdchangecnt;
143
144	static void	201	static void
145	anfds_init (ANFD *base, int count)	202	anfds_init (ANFD *base, int count)
146	{	203	{
147	while (count--)	204	while (count--)
148	{	205	{
149	base->head = 0;	206	base->head = 0;
150	base->wev = base->rev = EV_NONE;	207	base->events = EV_NONE;
		208	base->reify = 0;
		209
151	++base;	210	++base;
152	}	211	}
153	}	212	}
154		213
155	typedef struct
156	{
157	W w;
158	int events;
159	} ANPENDING;
160
161	static ANPENDING *pendings;
162	static int pendingmax, pendingcnt;
163
164	static void	214	static void
165	event (W w, int events)	215	event (EV_P_ W w, int events)
166	{	216	{
167	if (w->active)	217	if (w->pending)
168	{	218	{
169	w->pending = ++pendingcnt;
170	array_needsize (pendings, pendingmax, pendingcnt, );
171	pendings [pendingcnt - 1].w = w;
172	pendings [pendingcnt - 1].events = events;	219	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
		220	return;
173	}	221	}
174	}
175		222
		223	w->pending = ++pendingcnt [ABSPRI (w)];
		224	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
		225	pendings [ABSPRI (w)][w->pending - 1].w = w;
		226	pendings [ABSPRI (w)][w->pending - 1].events = events;
		227	}
		228
176	static void	229	static void
		230	queue_events (EV_P_ W *events, int eventcnt, int type)
		231	{
		232	int i;
		233
		234	for (i = 0; i < eventcnt; ++i)
		235	event (EV_A_ events [i], type);
		236	}
		237
		238	static void
177	fd_event (int fd, int events)	239	fd_event (EV_P_ int fd, int events)
178	{	240	{
179	ANFD *anfd = anfds + fd;	241	ANFD *anfd = anfds + fd;
180	struct ev_io *w;	242	struct ev_io *w;
181		243
182	for (w = anfd->head; w; w = w->next)	244	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
183	{	245	{
184	int ev = w->events & events;	246	int ev = w->events & events;
185		247
186	if (ev)	248	if (ev)
187	event ((W)w, ev);	249	event (EV_A_ (W)w, ev);
188	}	250	}
189	}	251	}
190		252
		253	/*****************************************************************************/
		254
191	static void	255	static void
192	queue_events (W *events, int eventcnt, int type)	256	fd_reify (EV_P)
193	{	257	{
194	int i;	258	int i;
195		259
196	for (i = 0; i < eventcnt; ++i)	260	for (i = 0; i < fdchangecnt; ++i)
197	event (events [i], type);	261	{
		262	int fd = fdchanges [i];
		263	ANFD *anfd = anfds + fd;
		264	struct ev_io *w;
		265
		266	int events = 0;
		267
		268	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
		269	events \|= w->events;
		270
		271	anfd->reify = 0;
		272
		273	if (anfd->events != events)
		274	{
		275	method_modify (EV_A_ fd, anfd->events, events);
		276	anfd->events = events;
		277	}
		278	}
		279
		280	fdchangecnt = 0;
		281	}
		282
		283	static void
		284	fd_change (EV_P_ int fd)
		285	{
		286	if (anfds [fd].reify \|\| fdchangecnt < 0)
		287	return;
		288
		289	anfds [fd].reify = 1;
		290
		291	++fdchangecnt;
		292	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
		293	fdchanges [fdchangecnt - 1] = fd;
		294	}
		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	}
198	}	306	}
199		307
200	/* called on EBADF to verify fds */	308	/* called on EBADF to verify fds */
201	static void	309	static void
202	fd_recheck ()	310	fd_ebadf (EV_P)
203	{	311	{
204	int fd;	312	int fd;
205		313
206	for (fd = 0; fd < anfdmax; ++fd)	314	for (fd = 0; fd < anfdmax; ++fd)
207	if (anfds [fd].wev)	315	if (anfds [fd].events)
208	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
209	while (anfds [fd].head)	317	fd_kill (EV_A_ fd);
210	evio_stop (anfds [fd].head);	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)
		328	{
		329	close (fd);
		330	fd_kill (EV_A_ fd);
		331	return;
		332	}
211	}	333	}
212		334
213	/*****************************************************************************/	335	/*****************************************************************************/
214
215	static struct ev_timer **timers;
216	static int timermax, timercnt;
217
218	static struct ev_periodic **periodics;
219	static int periodicmax, periodiccnt;
220		336
221	static void	337	static void
222	upheap (WT *timers, int k)	338	upheap (WT *timers, int k)
223	{	339	{
224	WT w = timers [k];	340	WT w = timers [k];
…		…
261		377
262	/*****************************************************************************/	378	/*****************************************************************************/
263		379
264	typedef struct	380	typedef struct
265	{	381	{
266	struct ev_signal *head;	382	struct ev_watcher_list *head;
267	sig_atomic_t gotsig;	383	sig_atomic_t volatile gotsig;
268	} ANSIG;	384	} ANSIG;
269		385
270	static ANSIG *signals;	386	static ANSIG *signals;
271	static int signalmax;	387	static int signalmax;
272		388
273	static int sigpipe [2];	389	static int sigpipe [2];
274	static sig_atomic_t gotsig;	390	static sig_atomic_t volatile gotsig;
275	static struct ev_io sigev;
276		391
277	static void	392	static void
278	signals_init (ANSIG *base, int count)	393	signals_init (ANSIG *base, int count)
279	{	394	{
280	while (count--)	395	while (count--)
281	{	396	{
282	base->head = 0;	397	base->head = 0;
283	base->gotsig = 0;	398	base->gotsig = 0;
		399
284	++base;	400	++base;
285	}	401	}
286	}	402	}
287		403
288	static void	404	static void
…		…
290	{	406	{
291	signals [signum - 1].gotsig = 1;	407	signals [signum - 1].gotsig = 1;
292		408
293	if (!gotsig)	409	if (!gotsig)
294	{	410	{
		411	int old_errno = errno;
295	gotsig = 1;	412	gotsig = 1;
296	write (sigpipe [1], &gotsig, 1);	413	write (sigpipe [1], &signum, 1);
		414	errno = old_errno;
297	}	415	}
298	}	416	}
299		417
300	static void	418	static void
301	sigcb (struct ev_io *iow, int revents)	419	sigcb (EV_P_ struct ev_io *iow, int revents)
302	{	420	{
303	struct ev_signal *w;	421	struct ev_watcher_list *w;
304	int sig;	422	int signum;
305		423
		424	read (sigpipe [0], &revents, 1);
306	gotsig = 0;	425	gotsig = 0;
307	read (sigpipe [0], &revents, 1);
308		426
309	for (sig = signalmax; sig--; )	427	for (signum = signalmax; signum--; )
310	if (signals [sig].gotsig)	428	if (signals [signum].gotsig)
311	{	429	{
312	signals [sig].gotsig = 0;	430	signals [signum].gotsig = 0;
313		431
314	for (w = signals [sig].head; w; w = w->next)	432	for (w = signals [signum].head; w; w = w->next)
315	event ((W)w, EV_SIGNAL);	433	event (EV_A_ (W)w, EV_SIGNAL);
316	}	434	}
317	}	435	}
318		436
319	static void	437	static void
320	siginit (void)	438	siginit (EV_P)
321	{	439	{
		440	#ifndef WIN32
322	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	441	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
323	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	442	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
324		443
325	/* rather than sort out wether we really need nb, set it */	444	/* rather than sort out wether we really need nb, set it */
326	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	445	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
327	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	446	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		447	#endif
328		448
329	evio_set (&sigev, sigpipe [0], EV_READ);	449	ev_io_set (&sigev, sigpipe [0], EV_READ);
330	evio_start (&sigev);	450	ev_io_start (&sigev);
		451	ev_unref (EV_A); /* child watcher should not keep loop alive */
331	}	452	}
332		453
333	/*****************************************************************************/	454	/*****************************************************************************/
334		455
335	static struct ev_idle **idles;	456	#ifndef WIN32
336	static int idlemax, idlecnt;
337
338	static struct ev_prepare **prepares;
339	static int preparemax, preparecnt;
340
341	static struct ev_check **checks;
342	static int checkmax, checkcnt;
343
344	/*****************************************************************************/
345
346	static struct ev_child *childs [PID_HASHSIZE];
347	static struct ev_signal childev;
348		457
349	#ifndef WCONTINUED	458	#ifndef WCONTINUED
350	# define WCONTINUED 0	459	# define WCONTINUED 0
351	#endif	460	#endif
352		461
353	static void	462	static void
354	childcb (struct ev_signal *sw, int revents)	463	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
355	{	464	{
356	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	{
357	int pid, status;	480	int pid, status;
358		481
359	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	482	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
360	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	483	{
361	if (w->pid == pid \|\| w->pid == -1)	484	/* make sure we are called again until all childs have been reaped */
362	{	485	event (EV_A_ (W)sw, EV_SIGNAL);
363	w->status = status;	486
364	event ((W)w, EV_CHILD);	487	child_reap (EV_A_ sw, pid, pid, status);
365	}	488	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		489	}
366	}	490	}
		491
		492	#endif
367		493
368	/*****************************************************************************/	494	/*****************************************************************************/
369		495
		496	#if EV_USE_KQUEUE
		497	# include "ev_kqueue.c"
		498	#endif
370	#if HAVE_EPOLL	499	#if EV_USE_EPOLL
371	# include "ev_epoll.c"	500	# include "ev_epoll.c"
372	#endif	501	#endif
		502	#if EV_USEV_POLL
		503	# include "ev_poll.c"
		504	#endif
373	#if HAVE_SELECT	505	#if EV_USE_SELECT
374	# include "ev_select.c"	506	# include "ev_select.c"
375	#endif	507	#endif
376		508
377	int ev_init (int flags)	509	int
		510	ev_version_major (void)
378	{	511	{
		512	return EV_VERSION_MAJOR;
		513	}
		514
		515	int
		516	ev_version_minor (void)
		517	{
		518	return EV_VERSION_MINOR;
		519	}
		520
		521	/* return true if we are running with elevated privileges and should ignore env variables */
		522	static int
		523	enable_secure (void)
		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
379	if (!ev_method)	546	if (!method)
380	{	547	{
381	#if HAVE_MONOTONIC	548	#if EV_USE_MONOTONIC
382	{	549	{
383	struct timespec ts;	550	struct timespec ts;
384	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	551	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
385	have_monotonic = 1;	552	have_monotonic = 1;
386	}	553	}
387	#endif	554	#endif
388		555
389	ev_now = ev_time ();	556	rt_now = ev_time ();
390	now = get_clock ();	557	mn_now = get_clock ();
		558	now_floor = mn_now;
391	diff = ev_now - now;	559	diff = rt_now - mn_now;
392		560
393	if (pipe (sigpipe))	561	if (pipe (sigpipe))
394	return 0;	562	return 0;
395		563
		564	if (methods == EVMETHOD_AUTO)
		565	if (!enable_secure () && getenv ("LIBmethodS"))
		566	methods = atoi (getenv ("LIBmethodS"));
		567	else
396	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
397	#if HAVE_EPOLL	574	#if EV_USE_EPOLL
398	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	575	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
399	#endif	576	#endif
		577	#if EV_USEV_POLL
		578	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
		579	#endif
400	#if HAVE_SELECT	580	#if EV_USE_SELECT
401	if (ev_method == EVMETHOD_NONE) select_init (flags);	581	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
402	#endif	582	#endif
403		583
404	if (ev_method)	584	if (method)
405	{	585	{
406	evw_init (&sigev, sigcb);	586	ev_watcher_init (&sigev, sigcb);
		587	ev_set_priority (&sigev, EV_MAXPRI);
407	siginit ();	588	siginit (EV_A);
408		589
		590	#ifndef WIN32
409	evsignal_init (&childev, childcb, SIGCHLD);	591	ev_signal_init (&childev, childcb, SIGCHLD);
		592	ev_set_priority (&childev, EV_MAXPRI);
410	evsignal_start (&childev);	593	ev_signal_start (EV_A_ &childev);
		594	ev_unref (EV_A); /* child watcher should not keep loop alive */
		595	#endif
411	}	596	}
412	}	597	}
413		598
414	return ev_method;	599	return method;
415	}	600	}
416		601
417	/*****************************************************************************/	602	/*****************************************************************************/
418		603
419	void ev_prefork (void)	604	void
		605	ev_fork_prepare (void)
420	{	606	{
421	/* nop */	607	/* nop */
422	}	608	}
423		609
		610	void
424	void ev_postfork_parent (void)	611	ev_fork_parent (void)
425	{	612	{
426	/* nop */	613	/* nop */
427	}	614	}
428		615
		616	void
429	void ev_postfork_child (void)	617	ev_fork_child (void)
430	{	618	{
431	#if HAVE_EPOLL	619	#if EV_USE_EPOLL
432	if (ev_method == EVMETHOD_EPOLL)	620	if (method == EVMETHOD_EPOLL)
433	epoll_postfork_child ();	621	epoll_postfork_child ();
434	#endif	622	#endif
435		623
436	evio_stop (&sigev);	624	ev_io_stop (&sigev);
437	close (sigpipe [0]);	625	close (sigpipe [0]);
438	close (sigpipe [1]);	626	close (sigpipe [1]);
439	pipe (sigpipe);	627	pipe (sigpipe);
440	siginit ();	628	siginit ();
441	}	629	}
442		630
443	/*****************************************************************************/	631	/*****************************************************************************/
444		632
445	static void	633	static void
446	fd_reify (void)	634	call_pending (EV_P)
447	{	635	{
448	int i;	636	int pri;
449		637
450	for (i = 0; i < fdchangecnt; ++i)	638	for (pri = NUMPRI; pri--; )
451	{	639	while (pendingcnt [pri])
452	int fd = fdchanges [i];
453	ANFD *anfd = anfds + fd;
454	struct ev_io *w;
455
456	int wev = 0;
457
458	for (w = anfd->head; w; w = w->next)
459	wev \|= w->events;
460
461	if (anfd->wev != wev)
462	{	640	{
463	method_modify (fd, anfd->wev, wev);
464	anfd->wev = wev;
465	}
466	}
467
468	fdchangecnt = 0;
469	}
470
471	static void
472	call_pending ()
473	{
474	while (pendingcnt)
475	{
476	ANPENDING *p = pendings + --pendingcnt;	641	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
477		642
478	if (p->w)	643	if (p->w)
479	{	644	{
480	p->w->pending = 0;	645	p->w->pending = 0;
481	p->w->cb (p->w, p->events);	646	p->w->cb (EV_A_ p->w, p->events);
482	}	647	}
483	}	648	}
484	}	649	}
485		650
486	static void	651	static void
487	timers_reify ()	652	timers_reify (EV_P)
488	{	653	{
489	while (timercnt && timers [0]->at <= now)	654	while (timercnt && timers [0]->at <= mn_now)
490	{	655	{
491	struct ev_timer *w = timers [0];	656	struct ev_timer *w = timers [0];
492
493	event ((W)w, EV_TIMEOUT);
494		657
495	/* first reschedule or stop timer */	658	/* first reschedule or stop timer */
496	if (w->repeat)	659	if (w->repeat)
497	{	660	{
		661	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
498	w->at = now + w->repeat;	662	w->at = mn_now + w->repeat;
499	assert (("timer timeout in the past, negative repeat?", w->at > now));
500	downheap ((WT *)timers, timercnt, 0);	663	downheap ((WT *)timers, timercnt, 0);
501	}	664	}
502	else	665	else
503	evtimer_stop (w); /* nonrepeating: stop timer */	666	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
504	}
505	}
506		667
		668	event ((W)w, EV_TIMEOUT);
		669	}
		670	}
		671
507	static void	672	static void
508	periodics_reify ()	673	periodics_reify (EV_P)
509	{	674	{
510	while (periodiccnt && periodics [0]->at <= ev_now)	675	while (periodiccnt && periodics [0]->at <= rt_now)
511	{	676	{
512	struct ev_periodic *w = periodics [0];	677	struct ev_periodic *w = periodics [0];
513		678
514	/* first reschedule or stop timer */	679	/* first reschedule or stop timer */
515	if (w->interval)	680	if (w->interval)
516	{	681	{
517	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;
518	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));
519	downheap ((WT *)periodics, periodiccnt, 0);	684	downheap ((WT *)periodics, periodiccnt, 0);
520	}	685	}
521	else	686	else
522	evperiodic_stop (w); /* nonrepeating: stop timer */	687	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
523		688
524	event ((W)w, EV_TIMEOUT);	689	event (EV_A_ (W)w, EV_PERIODIC);
525	}	690	}
526	}	691	}
527		692
528	static void	693	static void
529	periodics_reschedule (ev_tstamp diff)	694	periodics_reschedule (EV_P_ ev_tstamp diff)
530	{	695	{
531	int i;	696	int i;
532		697
533	/* adjust periodics after time jump */	698	/* adjust periodics after time jump */
534	for (i = 0; i < periodiccnt; ++i)	699	for (i = 0; i < periodiccnt; ++i)
535	{	700	{
536	struct ev_periodic *w = periodics [i];	701	struct ev_periodic *w = periodics [i];
537		702
538	if (w->interval)	703	if (w->interval)
539	{	704	{
540	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;
541		706
542	if (fabs (diff) >= 1e-4)	707	if (fabs (diff) >= 1e-4)
543	{	708	{
544	evperiodic_stop (w);	709	ev_periodic_stop (EV_A_ w);
545	evperiodic_start (w);	710	ev_periodic_start (EV_A_ w);
546		711
547	i = 0; /* restart loop, inefficient, but time jumps should be rare */	712	i = 0; /* restart loop, inefficient, but time jumps should be rare */
548	}	713	}
549	}	714	}
550	}	715	}
551	}	716	}
552		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
553	static void	736	static void
554	time_update ()	737	time_update (EV_P)
555	{	738	{
556	int i;	739	int i;
557		740
558	ev_now = ev_time ();	741	#if EV_USE_MONOTONIC
559
560	if (have_monotonic)	742	if (expect_true (have_monotonic))
561	{	743	{
562	ev_tstamp odiff = diff;	744	if (time_update_monotonic (EV_A))
563
564	for (i = 4; --i; ) /* loop a few times, before making important decisions */
565	{	745	{
566	now = get_clock ();	746	ev_tstamp odiff = diff;
		747
		748	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		749	{
567	diff = ev_now - now;	750	diff = rt_now - mn_now;
568		751
569	if (fabs (odiff - diff) < MIN_TIMEJUMP)	752	if (fabs (odiff - diff) < MIN_TIMEJUMP)
570	return; /* all is well */	753	return; /* all is well */
571		754
572	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 */
573	}	762	}
574
575	periodics_reschedule (diff - odiff);
576	/* no timer adjustment, as the monotonic clock doesn't jump */
577	}	763	}
578	else	764	else
		765	#endif
579	{	766	{
580	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))
581	{	770	{
582	periodics_reschedule (ev_now - now);	771	periodics_reschedule (EV_A_ rt_now - mn_now);
583		772
584	/* 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 */
585	for (i = 0; i < timercnt; ++i)	774	for (i = 0; i < timercnt; ++i)
586	timers [i]->at += diff;	775	timers [i]->at += diff;
587	}	776	}
588		777
589	now = ev_now;	778	mn_now = rt_now;
590	}	779	}
591	}	780	}
592		781
593	int ev_loop_done;	782	void
		783	ev_ref (EV_P)
		784	{
		785	++activecnt;
		786	}
594		787
		788	void
		789	ev_unref (EV_P)
		790	{
		791	--activecnt;
		792	}
		793
		794	static int loop_done;
		795
		796	void
595	void ev_loop (int flags)	797	ev_loop (EV_P_ int flags)
596	{	798	{
597	double block;	799	double block;
598	ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0;	800	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
599		801
600	do	802	do
601	{	803	{
602	/* queue check watchers (and execute them) */	804	/* queue check watchers (and execute them) */
603	if (preparecnt)	805	if (expect_false (preparecnt))
604	{	806	{
605	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	807	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
606	call_pending ();	808	call_pending (EV_A);
607	}	809	}
608		810
609	/* update fd-related kernel structures */	811	/* update fd-related kernel structures */
610	fd_reify ();	812	fd_reify (EV_A);
611		813
612	/* calculate blocking time */	814	/* calculate blocking time */
613		815
614	/* 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
615	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	{
616	ev_now = ev_time ();	824	rt_now = ev_time ();
		825	mn_now = rt_now;
		826	}
617		827
618	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	828	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
619	block = 0.;	829	block = 0.;
620	else	830	else
621	{	831	{
622	block = MAX_BLOCKTIME;	832	block = MAX_BLOCKTIME;
623		833
624	if (timercnt)	834	if (timercnt)
625	{	835	{
626	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;
627	if (block > to) block = to;	837	if (block > to) block = to;
628	}	838	}
629		839
630	if (periodiccnt)	840	if (periodiccnt)
631	{	841	{
632	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	842	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
633	if (block > to) block = to;	843	if (block > to) block = to;
634	}	844	}
635		845
636	if (block < 0.) block = 0.;	846	if (block < 0.) block = 0.;
637	}	847	}
638		848
639	method_poll (block);	849	method_poll (EV_A_ block);
640		850
641	/* update ev_now, do magic */	851	/* update rt_now, do magic */
642	time_update ();	852	time_update (EV_A);
643		853
644	/* queue pending timers and reschedule them */	854	/* queue pending timers and reschedule them */
645	timers_reify (); /* relative timers called last */	855	timers_reify (EV_A); /* relative timers called last */
646	periodics_reify (); /* absolute timers called first */	856	periodics_reify (EV_A); /* absolute timers called first */
647		857
648	/* queue idle watchers unless io or timers are pending */	858	/* queue idle watchers unless io or timers are pending */
649	if (!pendingcnt)	859	if (!pendingcnt)
650	queue_events ((W *)idles, idlecnt, EV_IDLE);	860	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
651		861
652	/* queue check watchers, to be executed first */	862	/* queue check watchers, to be executed first */
653	if (checkcnt)	863	if (checkcnt)
654	queue_events ((W *)checks, checkcnt, EV_CHECK);	864	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
655		865
656	call_pending ();	866	call_pending (EV_A);
657	}	867	}
658	while (!ev_loop_done);	868	while (activecnt && !loop_done);
659		869
660	if (ev_loop_done != 2)	870	if (loop_done != 2)
661	ev_loop_done = 0;	871	loop_done = 0;
		872	}
		873
		874	void
		875	ev_unloop (EV_P_ int how)
		876	{
		877	loop_done = how;
662	}	878	}
663		879
664	/*****************************************************************************/	880	/*****************************************************************************/
665		881
666	static void	882	inline void
667	wlist_add (WL *head, WL elem)	883	wlist_add (WL *head, WL elem)
668	{	884	{
669	elem->next = *head;	885	elem->next = *head;
670	*head = elem;	886	*head = elem;
671	}	887	}
672		888
673	static void	889	inline void
674	wlist_del (WL *head, WL elem)	890	wlist_del (WL *head, WL elem)
675	{	891	{
676	while (*head)	892	while (*head)
677	{	893	{
678	if (*head == elem)	894	if (*head == elem)
…		…
683		899
684	head = &(*head)->next;	900	head = &(*head)->next;
685	}	901	}
686	}	902	}
687		903
688	static void	904	inline void
689	ev_clear (W w)	905	ev_clear_pending (EV_P_ W w)
690	{	906	{
691	if (w->pending)	907	if (w->pending)
692	{	908	{
693	pendings [w->pending - 1].w = 0;	909	pendings [ABSPRI (w)][w->pending - 1].w = 0;
694	w->pending = 0;	910	w->pending = 0;
695	}	911	}
696	}	912	}
697		913
698	static void	914	inline void
699	ev_start (W w, int active)	915	ev_start (EV_P_ W w, int active)
700	{	916	{
		917	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		918	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		919
701	w->active = active;	920	w->active = active;
		921	ev_ref (EV_A);
702	}	922	}
703		923
704	static void	924	inline void
705	ev_stop (W w)	925	ev_stop (EV_P_ W w)
706	{	926	{
		927	ev_unref (EV_A);
707	w->active = 0;	928	w->active = 0;
708	}	929	}
709		930
710	/*****************************************************************************/	931	/*****************************************************************************/
711		932
712	void	933	void
713	evio_start (struct ev_io *w)	934	ev_io_start (EV_P_ struct ev_io *w)
714	{	935	{
		936	int fd = w->fd;
		937
715	if (ev_is_active (w))	938	if (ev_is_active (w))
716	return;	939	return;
717		940
718	int fd = w->fd;	941	assert (("ev_io_start called with negative fd", fd >= 0));
719		942
720	ev_start ((W)w, 1);	943	ev_start (EV_A_ (W)w, 1);
721	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	944	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
722	wlist_add ((WL *)&anfds[fd].head, (WL)w);	945	wlist_add ((WL *)&anfds[fd].head, (WL)w);
723		946
724	++fdchangecnt;	947	fd_change (EV_A_ fd);
725	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
726	fdchanges [fdchangecnt - 1] = fd;
727	}	948	}
728		949
729	void	950	void
730	evio_stop (struct ev_io *w)	951	ev_io_stop (EV_P_ struct ev_io *w)
731	{	952	{
732	ev_clear ((W)w);	953	ev_clear_pending (EV_A_ (W)w);
733	if (!ev_is_active (w))	954	if (!ev_is_active (w))
734	return;	955	return;
735		956
736	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	957	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
737	ev_stop ((W)w);	958	ev_stop (EV_A_ (W)w);
738		959
739	++fdchangecnt;	960	fd_change (EV_A_ w->fd);
740	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
741	fdchanges [fdchangecnt - 1] = w->fd;
742	}	961	}
743		962
744	void	963	void
745	evtimer_start (struct ev_timer *w)	964	ev_timer_start (EV_P_ struct ev_timer *w)
746	{	965	{
747	if (ev_is_active (w))	966	if (ev_is_active (w))
748	return;	967	return;
749		968
750	w->at += now;	969	w->at += mn_now;
751		970
752	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.));
753		972
754	ev_start ((W)w, ++timercnt);	973	ev_start (EV_A_ (W)w, ++timercnt);
755	array_needsize (timers, timermax, timercnt, );	974	array_needsize (timers, timermax, timercnt, );
756	timers [timercnt - 1] = w;	975	timers [timercnt - 1] = w;
757	upheap ((WT *)timers, timercnt - 1);	976	upheap ((WT *)timers, timercnt - 1);
758	}	977	}
759		978
760	void	979	void
761	evtimer_stop (struct ev_timer *w)	980	ev_timer_stop (EV_P_ struct ev_timer *w)
762	{	981	{
763	ev_clear ((W)w);	982	ev_clear_pending (EV_A_ (W)w);
764	if (!ev_is_active (w))	983	if (!ev_is_active (w))
765	return;	984	return;
766		985
767	if (w->active < timercnt--)	986	if (w->active < timercnt--)
768	{	987	{
…		…
770	downheap ((WT *)timers, timercnt, w->active - 1);	989	downheap ((WT *)timers, timercnt, w->active - 1);
771	}	990	}
772		991
773	w->at = w->repeat;	992	w->at = w->repeat;
774		993
775	ev_stop ((W)w);	994	ev_stop (EV_A_ (W)w);
776	}	995	}
777		996
778	void	997	void
779	evtimer_again (struct ev_timer *w)	998	ev_timer_again (EV_P_ struct ev_timer *w)
780	{	999	{
781	if (ev_is_active (w))	1000	if (ev_is_active (w))
782	{	1001	{
783	if (w->repeat)	1002	if (w->repeat)
784	{	1003	{
785	w->at = now + w->repeat;	1004	w->at = mn_now + w->repeat;
786	downheap ((WT *)timers, timercnt, w->active - 1);	1005	downheap ((WT *)timers, timercnt, w->active - 1);
787	}	1006	}
788	else	1007	else
789	evtimer_stop (w);	1008	ev_timer_stop (EV_A_ w);
790	}	1009	}
791	else if (w->repeat)	1010	else if (w->repeat)
792	evtimer_start (w);	1011	ev_timer_start (EV_A_ w);
793	}	1012	}
794		1013
795	void	1014	void
796	evperiodic_start (struct ev_periodic *w)	1015	ev_periodic_start (EV_P_ struct ev_periodic *w)
797	{	1016	{
798	if (ev_is_active (w))	1017	if (ev_is_active (w))
799	return;	1018	return;
800		1019
801	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.));
802		1021
803	/* 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 */
804	if (w->interval)	1023	if (w->interval)
805	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1024	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
806		1025
807	ev_start ((W)w, ++periodiccnt);	1026	ev_start (EV_A_ (W)w, ++periodiccnt);
808	array_needsize (periodics, periodicmax, periodiccnt, );	1027	array_needsize (periodics, periodicmax, periodiccnt, );
809	periodics [periodiccnt - 1] = w;	1028	periodics [periodiccnt - 1] = w;
810	upheap ((WT *)periodics, periodiccnt - 1);	1029	upheap ((WT *)periodics, periodiccnt - 1);
811	}	1030	}
812		1031
813	void	1032	void
814	evperiodic_stop (struct ev_periodic *w)	1033	ev_periodic_stop (EV_P_ struct ev_periodic *w)
815	{	1034	{
816	ev_clear ((W)w);	1035	ev_clear_pending (EV_A_ (W)w);
817	if (!ev_is_active (w))	1036	if (!ev_is_active (w))
818	return;	1037	return;
819		1038
820	if (w->active < periodiccnt--)	1039	if (w->active < periodiccnt--)
821	{	1040	{
822	periodics [w->active - 1] = periodics [periodiccnt];	1041	periodics [w->active - 1] = periodics [periodiccnt];
823	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1042	downheap ((WT *)periodics, periodiccnt, w->active - 1);
824	}	1043	}
825		1044
826	ev_stop ((W)w);	1045	ev_stop (EV_A_ (W)w);
827	}	1046	}
828		1047
		1048	#ifndef SA_RESTART
		1049	# define SA_RESTART 0
		1050	#endif
		1051
829	void	1052	void
830	evsignal_start (struct ev_signal *w)	1053	ev_signal_start (EV_P_ struct ev_signal *w)
831	{	1054	{
832	if (ev_is_active (w))	1055	if (ev_is_active (w))
833	return;	1056	return;
834		1057
		1058	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1059
835	ev_start ((W)w, 1);	1060	ev_start (EV_A_ (W)w, 1);
836	array_needsize (signals, signalmax, w->signum, signals_init);	1061	array_needsize (signals, signalmax, w->signum, signals_init);
837	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1062	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
838		1063
839	if (!w->next)	1064	if (!w->next)
840	{	1065	{
841	struct sigaction sa;	1066	struct sigaction sa;
842	sa.sa_handler = sighandler;	1067	sa.sa_handler = sighandler;
843	sigfillset (&sa.sa_mask);	1068	sigfillset (&sa.sa_mask);
844	sa.sa_flags = 0;	1069	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
845	sigaction (w->signum, &sa, 0);	1070	sigaction (w->signum, &sa, 0);
846	}	1071	}
847	}	1072	}
848		1073
849	void	1074	void
850	evsignal_stop (struct ev_signal *w)	1075	ev_signal_stop (EV_P_ struct ev_signal *w)
851	{	1076	{
852	ev_clear ((W)w);	1077	ev_clear_pending (EV_A_ (W)w);
853	if (!ev_is_active (w))	1078	if (!ev_is_active (w))
854	return;	1079	return;
855		1080
856	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1081	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
857	ev_stop ((W)w);	1082	ev_stop (EV_A_ (W)w);
858		1083
859	if (!signals [w->signum - 1].head)	1084	if (!signals [w->signum - 1].head)
860	signal (w->signum, SIG_DFL);	1085	signal (w->signum, SIG_DFL);
861	}	1086	}
862		1087
		1088	void
863	void evidle_start (struct ev_idle *w)	1089	ev_idle_start (EV_P_ struct ev_idle *w)
864	{	1090	{
865	if (ev_is_active (w))	1091	if (ev_is_active (w))
866	return;	1092	return;
867		1093
868	ev_start ((W)w, ++idlecnt);	1094	ev_start (EV_A_ (W)w, ++idlecnt);
869	array_needsize (idles, idlemax, idlecnt, );	1095	array_needsize (idles, idlemax, idlecnt, );
870	idles [idlecnt - 1] = w;	1096	idles [idlecnt - 1] = w;
871	}	1097	}
872		1098
		1099	void
873	void evidle_stop (struct ev_idle *w)	1100	ev_idle_stop (EV_P_ struct ev_idle *w)
874	{	1101	{
875	ev_clear ((W)w);	1102	ev_clear_pending (EV_A_ (W)w);
876	if (ev_is_active (w))	1103	if (ev_is_active (w))
877	return;	1104	return;
878		1105
879	idles [w->active - 1] = idles [--idlecnt];	1106	idles [w->active - 1] = idles [--idlecnt];
880	ev_stop ((W)w);	1107	ev_stop (EV_A_ (W)w);
881	}	1108	}
882		1109
		1110	void
883	void evprepare_start (struct ev_prepare *w)	1111	ev_prepare_start (EV_P_ struct ev_prepare *w)
884	{	1112	{
885	if (ev_is_active (w))	1113	if (ev_is_active (w))
886	return;	1114	return;
887		1115
888	ev_start ((W)w, ++preparecnt);	1116	ev_start (EV_A_ (W)w, ++preparecnt);
889	array_needsize (prepares, preparemax, preparecnt, );	1117	array_needsize (prepares, preparemax, preparecnt, );
890	prepares [preparecnt - 1] = w;	1118	prepares [preparecnt - 1] = w;
891	}	1119	}
892		1120
		1121	void
893	void evprepare_stop (struct ev_prepare *w)	1122	ev_prepare_stop (EV_P_ struct ev_prepare *w)
894	{	1123	{
895	ev_clear ((W)w);	1124	ev_clear_pending (EV_A_ (W)w);
896	if (ev_is_active (w))	1125	if (ev_is_active (w))
897	return;	1126	return;
898		1127
899	prepares [w->active - 1] = prepares [--preparecnt];	1128	prepares [w->active - 1] = prepares [--preparecnt];
900	ev_stop ((W)w);	1129	ev_stop (EV_A_ (W)w);
901	}	1130	}
902		1131
		1132	void
903	void evcheck_start (struct ev_check *w)	1133	ev_check_start (EV_P_ struct ev_check *w)
904	{	1134	{
905	if (ev_is_active (w))	1135	if (ev_is_active (w))
906	return;	1136	return;
907		1137
908	ev_start ((W)w, ++checkcnt);	1138	ev_start (EV_A_ (W)w, ++checkcnt);
909	array_needsize (checks, checkmax, checkcnt, );	1139	array_needsize (checks, checkmax, checkcnt, );
910	checks [checkcnt - 1] = w;	1140	checks [checkcnt - 1] = w;
911	}	1141	}
912		1142
		1143	void
913	void evcheck_stop (struct ev_check *w)	1144	ev_check_stop (EV_P_ struct ev_check *w)
914	{	1145	{
915	ev_clear ((W)w);	1146	ev_clear_pending (EV_A_ (W)w);
916	if (ev_is_active (w))	1147	if (ev_is_active (w))
917	return;	1148	return;
918		1149
919	checks [w->active - 1] = checks [--checkcnt];	1150	checks [w->active - 1] = checks [--checkcnt];
920	ev_stop ((W)w);	1151	ev_stop (EV_A_ (W)w);
921	}	1152	}
922		1153
		1154	void
923	void evchild_start (struct ev_child *w)	1155	ev_child_start (EV_P_ struct ev_child *w)
924	{	1156	{
925	if (ev_is_active (w))	1157	if (ev_is_active (w))
926	return;	1158	return;
927		1159
928	ev_start ((W)w, 1);	1160	ev_start (EV_A_ (W)w, 1);
929	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1161	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
930	}	1162	}
931		1163
		1164	void
932	void evchild_stop (struct ev_child *w)	1165	ev_child_stop (EV_P_ struct ev_child *w)
933	{	1166	{
934	ev_clear ((W)w);	1167	ev_clear_pending (EV_A_ (W)w);
935	if (ev_is_active (w))	1168	if (ev_is_active (w))
936	return;	1169	return;
937		1170
938	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1171	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
939	ev_stop ((W)w);	1172	ev_stop (EV_A_ (W)w);
940	}	1173	}
941		1174
942	/*****************************************************************************/	1175	/*****************************************************************************/
943		1176
944	struct ev_once	1177	struct ev_once
…		…
948	void (cb)(int revents, void arg);	1181	void (cb)(int revents, void arg);
949	void *arg;	1182	void *arg;
950	};	1183	};
951		1184
952	static void	1185	static void
953	once_cb (struct ev_once *once, int revents)	1186	once_cb (EV_P_ struct ev_once *once, int revents)
954	{	1187	{
955	void (cb)(int revents, void arg) = once->cb;	1188	void (cb)(int revents, void arg) = once->cb;
956	void *arg = once->arg;	1189	void *arg = once->arg;
957		1190
958	evio_stop (&once->io);	1191	ev_io_stop (EV_A_ &once->io);
959	evtimer_stop (&once->to);	1192	ev_timer_stop (EV_A_ &once->to);
960	free (once);	1193	free (once);
961		1194
962	cb (revents, arg);	1195	cb (revents, arg);
963	}	1196	}
964		1197
965	static void	1198	static void
966	once_cb_io (struct ev_io *w, int revents)	1199	once_cb_io (EV_P_ struct ev_io *w, int revents)
967	{	1200	{
968	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);
969	}	1202	}
970		1203
971	static void	1204	static void
972	once_cb_to (struct ev_timer *w, int revents)	1205	once_cb_to (EV_P_ struct ev_timer *w, int revents)
973	{	1206	{
974	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);
975	}	1208	}
976		1209
977	void	1210	void
978	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)
979	{	1212	{
980	struct ev_once *once = malloc (sizeof (struct ev_once));	1213	struct ev_once *once = malloc (sizeof (struct ev_once));
981		1214
982	if (!once)	1215	if (!once)
983	cb (EV_ERROR, arg);	1216	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
984	else	1217	else
985	{	1218	{
986	once->cb = cb;	1219	once->cb = cb;
987	once->arg = arg;	1220	once->arg = arg;
988		1221
989	evw_init (&once->io, once_cb_io);	1222	ev_watcher_init (&once->io, once_cb_io);
990
991	if (fd >= 0)	1223	if (fd >= 0)
992	{	1224	{
993	evio_set (&once->io, fd, events);	1225	ev_io_set (&once->io, fd, events);
994	evio_start (&once->io);	1226	ev_io_start (EV_A_ &once->io);
995	}	1227	}
996		1228
997	evw_init (&once->to, once_cb_to);	1229	ev_watcher_init (&once->to, once_cb_to);
998
999	if (timeout >= 0.)	1230	if (timeout >= 0.)
1000	{	1231	{
1001	evtimer_set (&once->to, timeout, 0.);	1232	ev_timer_set (&once->to, timeout, 0.);
1002	evtimer_start (&once->to);	1233	ev_timer_start (EV_A_ &once->to);
1003	}	1234	}
1004	}	1235	}
1005	}	1236	}
1006		1237
1007	/*****************************************************************************/	1238	/*****************************************************************************/
…		…
1018		1249
1019	static void	1250	static void
1020	ocb (struct ev_timer *w, int revents)	1251	ocb (struct ev_timer *w, int revents)
1021	{	1252	{
1022	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);	1253	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1023	evtimer_stop (w);	1254	ev_timer_stop (w);
1024	evtimer_start (w);	1255	ev_timer_start (w);
1025	}	1256	}
1026		1257
1027	static void	1258	static void
1028	scb (struct ev_signal *w, int revents)	1259	scb (struct ev_signal *w, int revents)
1029	{	1260	{
1030	fprintf (stderr, "signal %x,%d\n", revents, w->signum);	1261	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1031	evio_stop (&wio);	1262	ev_io_stop (&wio);
1032	evio_start (&wio);	1263	ev_io_start (&wio);
1033	}	1264	}
1034		1265
1035	static void	1266	static void
1036	gcb (struct ev_signal *w, int revents)	1267	gcb (struct ev_signal *w, int revents)
1037	{	1268	{
…		…
1041		1272
1042	int main (void)	1273	int main (void)
1043	{	1274	{
1044	ev_init (0);	1275	ev_init (0);
1045		1276
1046	evio_init (&wio, sin_cb, 0, EV_READ);	1277	ev_io_init (&wio, sin_cb, 0, EV_READ);
1047	evio_start (&wio);	1278	ev_io_start (&wio);
1048		1279
1049	struct ev_timer t[10000];	1280	struct ev_timer t[10000];
1050		1281
1051	#if 0	1282	#if 0
1052	int i;	1283	int i;
1053	for (i = 0; i < 10000; ++i)	1284	for (i = 0; i < 10000; ++i)
1054	{	1285	{
1055	struct ev_timer *w = t + i;	1286	struct ev_timer *w = t + i;
1056	evw_init (w, ocb, i);	1287	ev_watcher_init (w, ocb, i);
1057	evtimer_init_abs (w, ocb, drand48 (), 0.99775533);	1288	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1058	evtimer_start (w);	1289	ev_timer_start (w);
1059	if (drand48 () < 0.5)	1290	if (drand48 () < 0.5)
1060	evtimer_stop (w);	1291	ev_timer_stop (w);
1061	}	1292	}
1062	#endif	1293	#endif
1063		1294
1064	struct ev_timer t1;	1295	struct ev_timer t1;
1065	evtimer_init (&t1, ocb, 5, 10);	1296	ev_timer_init (&t1, ocb, 5, 10);
1066	evtimer_start (&t1);	1297	ev_timer_start (&t1);
1067		1298
1068	struct ev_signal sig;	1299	struct ev_signal sig;
1069	evsignal_init (&sig, scb, SIGQUIT);	1300	ev_signal_init (&sig, scb, SIGQUIT);
1070	evsignal_start (&sig);	1301	ev_signal_start (&sig);
1071		1302
1072	struct ev_check cw;	1303	struct ev_check cw;
1073	evcheck_init (&cw, gcb);	1304	ev_check_init (&cw, gcb);
1074	evcheck_start (&cw);	1305	ev_check_start (&cw);
1075		1306
1076	struct ev_idle iw;	1307	struct ev_idle iw;
1077	evidle_init (&iw, gcb);	1308	ev_idle_init (&iw, gcb);
1078	evidle_start (&iw);	1309	ev_idle_start (&iw);
1079		1310
1080	ev_loop (0);	1311	ev_loop (0);
1081		1312
1082	return 0;	1313	return 0;
1083	}	1314	}

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Comparing libev/ev.c (file contents): Revision 1.23 by root, Wed Oct 31 20:10:17 2007 UTC vs. Revision 1.53 by root, Sat Nov 3 22:31:11 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.23 by root, Wed Oct 31 20:10:17 2007 UTC vs.
Revision 1.53 by root, Sat Nov 3 22:31:11 2007 UTC