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

Comparing libev/ev.c (file contents):
Revision 1.30 by root, Thu Nov 1 08:28:33 2007 UTC vs.
Revision 1.52 by root, Sat Nov 3 22:10:39 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
63	#ifndef EV_USE_REALTIME	75	#ifndef EV_USE_REALTIME
64	# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */	76	# define EV_USE_REALTIME 1
65	#endif	77	#endif
		78
		79	/**/
		80
		81	#ifndef CLOCK_MONOTONIC
		82	# undef EV_USE_MONOTONIC
		83	# define EV_USE_MONOTONIC 0
		84	#endif
		85
		86	#ifndef CLOCK_REALTIME
		87	# undef EV_USE_REALTIME
		88	# define EV_USE_REALTIME 0
		89	#endif
		90
		91	/**/
66		92
67	#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) */
68	#define MAX_BLOCKTIME 59.731	94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
69	#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 */
70		97
71	#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)
72		113
73	typedef struct ev_watcher *W;	114	typedef struct ev_watcher *W;
74	typedef struct ev_watcher_list *WL;	115	typedef struct ev_watcher_list *WL;
75	typedef struct ev_watcher_time *WT;	116	typedef struct ev_watcher_time *WT;
76		117
77	static ev_tstamp now, diff; /* monotonic clock */	118	static ev_tstamp now_floor, mn_now, diff; /* monotonic clock */
78	ev_tstamp ev_now;	119	static ev_tstamp rt_now;
79	int ev_method;	120	static int method;
80		121
81	static int have_monotonic; /* runtime */	122	static int have_monotonic; /* runtime */
82		123
83	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
84	static void (*method_modify)(int fd, int oev, int nev);	125	static void (*method_modify)(EV_P_ int fd, int oev, int nev);
85	static void (*method_poll)(ev_tstamp timeout);	126	static void (*method_poll)(EV_P_ ev_tstamp timeout);
		127
		128	static int activecnt; /* number of active events */
		129
		130	#if EV_USE_SELECT
		131	static unsigned char vec_ri, vec_ro, vec_wi, vec_wo;
		132	static int vec_max;
		133	#endif
		134
		135	#if EV_USEV_POLL
		136	static struct pollfd *polls;
		137	static int pollmax, pollcnt;
		138	static int pollidxs; / maps fds into structure indices */
		139	static int pollidxmax;
		140	#endif
		141
		142	#if EV_USE_EPOLL
		143	static int epoll_fd = -1;
		144
		145	static struct epoll_event *events;
		146	static int eventmax;
		147	#endif
		148
		149	#if EV_USE_KQUEUE
		150	static int kqueue_fd;
		151	static struct kevent *kqueue_changes;
		152	static int kqueue_changemax, kqueue_changecnt;
		153	static struct kevent *kqueue_events;
		154	static int kqueue_eventmax;
		155	#endif
86		156
87	/*****************************************************************************/	157	/*****************************************************************************/
88		158
89	ev_tstamp	159	inline ev_tstamp
90	ev_time (void)	160	ev_time (void)
91	{	161	{
92	#if EV_USE_REALTIME	162	#if EV_USE_REALTIME
93	struct timespec ts;	163	struct timespec ts;
94	clock_gettime (CLOCK_REALTIME, &ts);	164	clock_gettime (CLOCK_REALTIME, &ts);
…		…
98	gettimeofday (&tv, 0);	168	gettimeofday (&tv, 0);
99	return tv.tv_sec + tv.tv_usec * 1e-6;	169	return tv.tv_sec + tv.tv_usec * 1e-6;
100	#endif	170	#endif
101	}	171	}
102		172
103	static ev_tstamp	173	inline ev_tstamp
104	get_clock (void)	174	get_clock (void)
105	{	175	{
106	#if EV_USE_MONOTONIC	176	#if EV_USE_MONOTONIC
107	if (have_monotonic)	177	if (expect_true (have_monotonic))
108	{	178	{
109	struct timespec ts;	179	struct timespec ts;
110	clock_gettime (CLOCK_MONOTONIC, &ts);	180	clock_gettime (CLOCK_MONOTONIC, &ts);
111	return ts.tv_sec + ts.tv_nsec * 1e-9;	181	return ts.tv_sec + ts.tv_nsec * 1e-9;
112	}	182	}
113	#endif	183	#endif
114		184
115	return ev_time ();	185	return ev_time ();
116	}	186	}
117		187
		188	ev_tstamp
		189	ev_now (EV_P)
		190	{
		191	return rt_now;
		192	}
		193
118	#define array_roundsize(base,n) ((n) \| 4 & ~3)	194	#define array_roundsize(base,n) ((n) \| 4 & ~3)
119		195
120	#define array_needsize(base,cur,cnt,init) \	196	#define array_needsize(base,cur,cnt,init) \
121	if ((cnt) > cur) \	197	if (expect_false ((cnt) > cur)) \
122	{ \	198	{ \
123	int newcnt = cur; \	199	int newcnt = cur; \
124	do \	200	do \
125	{ \	201	{ \
126	newcnt = array_roundsize (base, newcnt << 1); \	202	newcnt = array_roundsize (base, newcnt << 1); \
…		…
134		210
135	/*****************************************************************************/	211	/*****************************************************************************/
136		212
137	typedef struct	213	typedef struct
138	{	214	{
139	struct ev_io *head;	215	struct ev_watcher_list *head;
140	int events;	216	unsigned char events;
		217	unsigned char reify;
141	} ANFD;	218	} ANFD;
142		219
143	static ANFD *anfds;	220	static ANFD *anfds;
144	static int anfdmax;	221	static int anfdmax;
145		222
…		…
148	{	225	{
149	while (count--)	226	while (count--)
150	{	227	{
151	base->head = 0;	228	base->head = 0;
152	base->events = EV_NONE;	229	base->events = EV_NONE;
		230	base->reify = 0;
		231
153	++base;	232	++base;
154	}	233	}
155	}	234	}
156		235
157	typedef struct	236	typedef struct
158	{	237	{
159	W w;	238	W w;
160	int events;	239	int events;
161	} ANPENDING;	240	} ANPENDING;
162		241
163	static ANPENDING *pendings;	242	static ANPENDING *pendings [NUMPRI];
164	static int pendingmax, pendingcnt;	243	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
165		244
166	static void	245	static void
167	event (W w, int events)	246	event (EV_P_ W w, int events)
168	{	247	{
		248	if (w->pending)
		249	{
		250	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
		251	return;
		252	}
		253
169	w->pending = ++pendingcnt;	254	w->pending = ++pendingcnt [ABSPRI (w)];
170	array_needsize (pendings, pendingmax, pendingcnt, );	255	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
171	pendings [pendingcnt - 1].w = w;	256	pendings [ABSPRI (w)][w->pending - 1].w = w;
172	pendings [pendingcnt - 1].events = events;	257	pendings [ABSPRI (w)][w->pending - 1].events = events;
173	}	258	}
174		259
175	static void	260	static void
176	queue_events (W *events, int eventcnt, int type)	261	queue_events (EV_P_ W *events, int eventcnt, int type)
177	{	262	{
178	int i;	263	int i;
179		264
180	for (i = 0; i < eventcnt; ++i)	265	for (i = 0; i < eventcnt; ++i)
181	event (events [i], type);	266	event (EV_A_ events [i], type);
182	}	267	}
183		268
184	static void	269	static void
185	fd_event (int fd, int events)	270	fd_event (EV_P_ int fd, int events)
186	{	271	{
187	ANFD *anfd = anfds + fd;	272	ANFD *anfd = anfds + fd;
188	struct ev_io *w;	273	struct ev_io *w;
189		274
190	for (w = anfd->head; w; w = w->next)	275	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
191	{	276	{
192	int ev = w->events & events;	277	int ev = w->events & events;
193		278
194	if (ev)	279	if (ev)
195	event ((W)w, ev);	280	event (EV_A_ (W)w, ev);
196	}	281	}
197	}	282	}
198		283
199	/*****************************************************************************/	284	/*****************************************************************************/
200		285
201	static int *fdchanges;	286	static int *fdchanges;
202	static int fdchangemax, fdchangecnt;	287	static int fdchangemax, fdchangecnt;
203		288
204	static void	289	static void
205	fd_reify (void)	290	fd_reify (EV_P)
206	{	291	{
207	int i;	292	int i;
208		293
209	for (i = 0; i < fdchangecnt; ++i)	294	for (i = 0; i < fdchangecnt; ++i)
210	{	295	{
…		…
212	ANFD *anfd = anfds + fd;	297	ANFD *anfd = anfds + fd;
213	struct ev_io *w;	298	struct ev_io *w;
214		299
215	int events = 0;	300	int events = 0;
216		301
217	for (w = anfd->head; w; w = w->next)	302	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
218	events \|= w->events;	303	events \|= w->events;
219		304
220	anfd->events &= ~EV_REIFY;	305	anfd->reify = 0;
221		306
222	if (anfd->events != events)	307	if (anfd->events != events)
223	{	308	{
224	method_modify (fd, anfd->events, events);	309	method_modify (EV_A_ fd, anfd->events, events);
225	anfd->events = events;	310	anfd->events = events;
226	}	311	}
227	}	312	}
228		313
229	fdchangecnt = 0;	314	fdchangecnt = 0;
230	}	315	}
231		316
232	static void	317	static void
233	fd_change (int fd)	318	fd_change (EV_P_ int fd)
234	{	319	{
235	if (anfds [fd].events & EV_REIFY \|\| fdchangecnt < 0)	320	if (anfds [fd].reify \|\| fdchangecnt < 0)
236	return;	321	return;
237		322
238	anfds [fd].events \|= EV_REIFY;	323	anfds [fd].reify = 1;
239		324
240	++fdchangecnt;	325	++fdchangecnt;
241	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	326	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
242	fdchanges [fdchangecnt - 1] = fd;	327	fdchanges [fdchangecnt - 1] = fd;
243	}	328	}
244		329
		330	static void
		331	fd_kill (EV_P_ int fd)
		332	{
		333	struct ev_io *w;
		334
		335	while ((w = (struct ev_io *)anfds [fd].head))
		336	{
		337	ev_io_stop (EV_A_ w);
		338	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
		339	}
		340	}
		341
245	/* called on EBADF to verify fds */	342	/* called on EBADF to verify fds */
246	static void	343	static void
247	fd_recheck (void)	344	fd_ebadf (EV_P)
248	{	345	{
249	int fd;	346	int fd;
250		347
251	for (fd = 0; fd < anfdmax; ++fd)	348	for (fd = 0; fd < anfdmax; ++fd)
252	if (anfds [fd].events)	349	if (anfds [fd].events)
253	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	350	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
254	while (anfds [fd].head)	351	fd_kill (EV_A_ fd);
		352	}
		353
		354	/* called on ENOMEM in select/poll to kill some fds and retry */
		355	static void
		356	fd_enomem (EV_P)
		357	{
		358	int fd = anfdmax;
		359
		360	while (fd--)
		361	if (anfds [fd].events)
255	{	362	{
256	event ((W)anfds [fd].head, EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT);	363	close (fd);
257	ev_io_stop (anfds [fd].head);	364	fd_kill (EV_A_ fd);
		365	return;
258	}	366	}
259	}	367	}
260		368
261	/*****************************************************************************/	369	/*****************************************************************************/
262		370
263	static struct ev_timer **timers;	371	static struct ev_timer **timers;
…		…
309		417
310	/*****************************************************************************/	418	/*****************************************************************************/
311		419
312	typedef struct	420	typedef struct
313	{	421	{
314	struct ev_signal *head;	422	struct ev_watcher_list *head;
315	sig_atomic_t gotsig;	423	sig_atomic_t volatile gotsig;
316	} ANSIG;	424	} ANSIG;
317		425
318	static ANSIG *signals;	426	static ANSIG *signals;
319	static int signalmax;	427	static int signalmax;
320		428
321	static int sigpipe [2];	429	static int sigpipe [2];
322	static sig_atomic_t gotsig;	430	static sig_atomic_t volatile gotsig;
323	static struct ev_io sigev;	431	static struct ev_io sigev;
324		432
325	static void	433	static void
326	signals_init (ANSIG *base, int count)	434	signals_init (ANSIG *base, int count)
327	{	435	{
328	while (count--)	436	while (count--)
329	{	437	{
330	base->head = 0;	438	base->head = 0;
331	base->gotsig = 0;	439	base->gotsig = 0;
		440
332	++base;	441	++base;
333	}	442	}
334	}	443	}
335		444
336	static void	445	static void
…		…
338	{	447	{
339	signals [signum - 1].gotsig = 1;	448	signals [signum - 1].gotsig = 1;
340		449
341	if (!gotsig)	450	if (!gotsig)
342	{	451	{
		452	int old_errno = errno;
343	gotsig = 1;	453	gotsig = 1;
344	write (sigpipe [1], &gotsig, 1);	454	write (sigpipe [1], &signum, 1);
		455	errno = old_errno;
345	}	456	}
346	}	457	}
347		458
348	static void	459	static void
349	sigcb (struct ev_io *iow, int revents)	460	sigcb (EV_P_ struct ev_io *iow, int revents)
350	{	461	{
351	struct ev_signal *w;	462	struct ev_watcher_list *w;
352	int sig;	463	int signum;
353		464
		465	read (sigpipe [0], &revents, 1);
354	gotsig = 0;	466	gotsig = 0;
355	read (sigpipe [0], &revents, 1);
356		467
357	for (sig = signalmax; sig--; )	468	for (signum = signalmax; signum--; )
358	if (signals [sig].gotsig)	469	if (signals [signum].gotsig)
359	{	470	{
360	signals [sig].gotsig = 0;	471	signals [signum].gotsig = 0;
361		472
362	for (w = signals [sig].head; w; w = w->next)	473	for (w = signals [signum].head; w; w = w->next)
363	event ((W)w, EV_SIGNAL);	474	event (EV_A_ (W)w, EV_SIGNAL);
364	}	475	}
365	}	476	}
366		477
367	static void	478	static void
368	siginit (void)	479	siginit (EV_P)
369	{	480	{
		481	#ifndef WIN32
370	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	482	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
371	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	483	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
372		484
373	/* rather than sort out wether we really need nb, set it */	485	/* rather than sort out wether we really need nb, set it */
374	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	486	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
375	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	487	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		488	#endif
376		489
377	ev_io_set (&sigev, sigpipe [0], EV_READ);	490	ev_io_set (&sigev, sigpipe [0], EV_READ);
378	ev_io_start (&sigev);	491	ev_io_start (&sigev);
		492	ev_unref (EV_A); /* child watcher should not keep loop alive */
379	}	493	}
380		494
381	/*****************************************************************************/	495	/*****************************************************************************/
382		496
383	static struct ev_idle **idles;	497	static struct ev_idle **idles;
…		…
392	/*****************************************************************************/	506	/*****************************************************************************/
393		507
394	static struct ev_child *childs [PID_HASHSIZE];	508	static struct ev_child *childs [PID_HASHSIZE];
395	static struct ev_signal childev;	509	static struct ev_signal childev;
396		510
		511	#ifndef WIN32
		512
397	#ifndef WCONTINUED	513	#ifndef WCONTINUED
398	# define WCONTINUED 0	514	# define WCONTINUED 0
399	#endif	515	#endif
400		516
401	static void	517	static void
402	childcb (struct ev_signal *sw, int revents)	518	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
403	{	519	{
404	struct ev_child *w;	520	struct ev_child *w;
		521
		522	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		523	if (w->pid == pid \|\| !w->pid)
		524	{
		525	w->priority = sw->priority; /* need to do it now */
		526	w->rpid = pid;
		527	w->rstatus = status;
		528	event (EV_A_ (W)w, EV_CHILD);
		529	}
		530	}
		531
		532	static void
		533	childcb (EV_P_ struct ev_signal *sw, int revents)
		534	{
405	int pid, status;	535	int pid, status;
406		536
407	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	537	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
408	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	538	{
409	if (w->pid == pid \|\| w->pid == -1)	539	/* make sure we are called again until all childs have been reaped */
410	{	540	event (EV_A_ (W)sw, EV_SIGNAL);
411	w->status = status;	541
412	event ((W)w, EV_CHILD);	542	child_reap (EV_A_ sw, pid, pid, status);
413	}	543	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		544	}
414	}	545	}
		546
		547	#endif
415		548
416	/*****************************************************************************/	549	/*****************************************************************************/
417		550
		551	#if EV_USE_KQUEUE
		552	# include "ev_kqueue.c"
		553	#endif
418	#if EV_USE_EPOLL	554	#if EV_USE_EPOLL
419	# include "ev_epoll.c"	555	# include "ev_epoll.c"
420	#endif	556	#endif
		557	#if EV_USEV_POLL
		558	# include "ev_poll.c"
		559	#endif
421	#if EV_USE_SELECT	560	#if EV_USE_SELECT
422	# include "ev_select.c"	561	# include "ev_select.c"
423	#endif	562	#endif
424		563
425	int	564	int
…		…
432	ev_version_minor (void)	571	ev_version_minor (void)
433	{	572	{
434	return EV_VERSION_MINOR;	573	return EV_VERSION_MINOR;
435	}	574	}
436		575
437	int ev_init (int flags)	576	/* return true if we are running with elevated privileges and should ignore env variables */
		577	static int
		578	enable_secure (void)
438	{	579	{
		580	#ifdef WIN32
		581	return 0;
		582	#else
		583	return getuid () != geteuid ()
		584	\|\| getgid () != getegid ();
		585	#endif
		586	}
		587
		588	int
		589	ev_method (EV_P)
		590	{
		591	return method;
		592	}
		593
		594	int
		595	ev_init (EV_P_ int methods)
		596	{
439	if (!ev_method)	597	if (!method)
440	{	598	{
441	#if EV_USE_MONOTONIC	599	#if EV_USE_MONOTONIC
442	{	600	{
443	struct timespec ts;	601	struct timespec ts;
444	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	602	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
445	have_monotonic = 1;	603	have_monotonic = 1;
446	}	604	}
447	#endif	605	#endif
448		606
449	ev_now = ev_time ();	607	rt_now = ev_time ();
450	now = get_clock ();	608	mn_now = get_clock ();
		609	now_floor = mn_now;
451	diff = ev_now - now;	610	diff = rt_now - mn_now;
452		611
453	if (pipe (sigpipe))	612	if (pipe (sigpipe))
454	return 0;	613	return 0;
455		614
		615	if (methods == EVMETHOD_AUTO)
		616	if (!enable_secure () && getenv ("LIBmethodS"))
		617	methods = atoi (getenv ("LIBmethodS"));
		618	else
456	ev_method = EVMETHOD_NONE;	619	methods = EVMETHOD_ANY;
		620
		621	method = 0;
		622	#if EV_USE_KQUEUE
		623	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		624	#endif
457	#if EV_USE_EPOLL	625	#if EV_USE_EPOLL
458	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	626	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
		627	#endif
		628	#if EV_USEV_POLL
		629	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
459	#endif	630	#endif
460	#if EV_USE_SELECT	631	#if EV_USE_SELECT
461	if (ev_method == EVMETHOD_NONE) select_init (flags);	632	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
462	#endif	633	#endif
463		634
464	if (ev_method)	635	if (method)
465	{	636	{
466	ev_watcher_init (&sigev, sigcb);	637	ev_watcher_init (&sigev, sigcb);
		638	ev_set_priority (&sigev, EV_MAXPRI);
467	siginit ();	639	siginit (EV_A);
468		640
		641	#ifndef WIN32
469	ev_signal_init (&childev, childcb, SIGCHLD);	642	ev_signal_init (&childev, childcb, SIGCHLD);
		643	ev_set_priority (&childev, EV_MAXPRI);
470	ev_signal_start (&childev);	644	ev_signal_start (EV_A_ &childev);
		645	ev_unref (EV_A); /* child watcher should not keep loop alive */
		646	#endif
471	}	647	}
472	}	648	}
473		649
474	return ev_method;	650	return method;
475	}	651	}
476		652
477	/*****************************************************************************/	653	/*****************************************************************************/
478		654
479	void	655	void
480	ev_prefork (void)	656	ev_fork_prepare (void)
481	{	657	{
482	/* nop */	658	/* nop */
483	}	659	}
484		660
485	void	661	void
486	ev_postfork_parent (void)	662	ev_fork_parent (void)
487	{	663	{
488	/* nop */	664	/* nop */
489	}	665	}
490		666
491	void	667	void
492	ev_postfork_child (void)	668	ev_fork_child (void)
493	{	669	{
494	#if EV_USE_EPOLL	670	#if EV_USE_EPOLL
495	if (ev_method == EVMETHOD_EPOLL)	671	if (method == EVMETHOD_EPOLL)
496	epoll_postfork_child ();	672	epoll_postfork_child ();
497	#endif	673	#endif
498		674
499	ev_io_stop (&sigev);	675	ev_io_stop (&sigev);
500	close (sigpipe [0]);	676	close (sigpipe [0]);
…		…
504	}	680	}
505		681
506	/*****************************************************************************/	682	/*****************************************************************************/
507		683
508	static void	684	static void
509	call_pending (void)	685	call_pending (EV_P)
510	{	686	{
		687	int pri;
		688
		689	for (pri = NUMPRI; pri--; )
511	while (pendingcnt)	690	while (pendingcnt [pri])
512	{	691	{
513	ANPENDING *p = pendings + --pendingcnt;	692	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
514		693
515	if (p->w)	694	if (p->w)
516	{	695	{
517	p->w->pending = 0;	696	p->w->pending = 0;
518	p->w->cb (p->w, p->events);	697	p->w->cb (EV_A_ p->w, p->events);
519	}	698	}
520	}	699	}
521	}	700	}
522		701
523	static void	702	static void
524	timers_reify (void)	703	timers_reify (EV_P)
525	{	704	{
526	while (timercnt && timers [0]->at <= now)	705	while (timercnt && timers [0]->at <= mn_now)
527	{	706	{
528	struct ev_timer *w = timers [0];	707	struct ev_timer *w = timers [0];
529		708
530	/* first reschedule or stop timer */	709	/* first reschedule or stop timer */
531	if (w->repeat)	710	if (w->repeat)
532	{	711	{
		712	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
533	w->at = now + w->repeat;	713	w->at = mn_now + w->repeat;
534	assert (("timer timeout in the past, negative repeat?", w->at > now));
535	downheap ((WT *)timers, timercnt, 0);	714	downheap ((WT *)timers, timercnt, 0);
536	}	715	}
537	else	716	else
538	ev_timer_stop (w); /* nonrepeating: stop timer */	717	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
539		718
540	event ((W)w, EV_TIMEOUT);	719	event ((W)w, EV_TIMEOUT);
541	}	720	}
542	}	721	}
543		722
544	static void	723	static void
545	periodics_reify (void)	724	periodics_reify (EV_P)
546	{	725	{
547	while (periodiccnt && periodics [0]->at <= ev_now)	726	while (periodiccnt && periodics [0]->at <= rt_now)
548	{	727	{
549	struct ev_periodic *w = periodics [0];	728	struct ev_periodic *w = periodics [0];
550		729
551	/* first reschedule or stop timer */	730	/* first reschedule or stop timer */
552	if (w->interval)	731	if (w->interval)
553	{	732	{
554	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	733	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;
555	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	734	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
556	downheap ((WT *)periodics, periodiccnt, 0);	735	downheap ((WT *)periodics, periodiccnt, 0);
557	}	736	}
558	else	737	else
559	ev_periodic_stop (w); /* nonrepeating: stop timer */	738	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
560		739
561	event ((W)w, EV_TIMEOUT);	740	event (EV_A_ (W)w, EV_PERIODIC);
562	}	741	}
563	}	742	}
564		743
565	static void	744	static void
566	periodics_reschedule (ev_tstamp diff)	745	periodics_reschedule (EV_P_ ev_tstamp diff)
567	{	746	{
568	int i;	747	int i;
569		748
570	/* adjust periodics after time jump */	749	/* adjust periodics after time jump */
571	for (i = 0; i < periodiccnt; ++i)	750	for (i = 0; i < periodiccnt; ++i)
572	{	751	{
573	struct ev_periodic *w = periodics [i];	752	struct ev_periodic *w = periodics [i];
574		753
575	if (w->interval)	754	if (w->interval)
576	{	755	{
577	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	756	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
578		757
579	if (fabs (diff) >= 1e-4)	758	if (fabs (diff) >= 1e-4)
580	{	759	{
581	ev_periodic_stop (w);	760	ev_periodic_stop (EV_A_ w);
582	ev_periodic_start (w);	761	ev_periodic_start (EV_A_ w);
583		762
584	i = 0; /* restart loop, inefficient, but time jumps should be rare */	763	i = 0; /* restart loop, inefficient, but time jumps should be rare */
585	}	764	}
586	}	765	}
587	}	766	}
588	}	767	}
589		768
		769	inline int
		770	time_update_monotonic (EV_P)
		771	{
		772	mn_now = get_clock ();
		773
		774	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		775	{
		776	rt_now = mn_now + diff;
		777	return 0;
		778	}
		779	else
		780	{
		781	now_floor = mn_now;
		782	rt_now = ev_time ();
		783	return 1;
		784	}
		785	}
		786
590	static void	787	static void
591	time_update (void)	788	time_update (EV_P)
592	{	789	{
593	int i;	790	int i;
594		791
595	ev_now = ev_time ();	792	#if EV_USE_MONOTONIC
596
597	if (have_monotonic)	793	if (expect_true (have_monotonic))
598	{	794	{
599	ev_tstamp odiff = diff;	795	if (time_update_monotonic (EV_A))
600
601	for (i = 4; --i; ) /* loop a few times, before making important decisions */
602	{	796	{
603	now = get_clock ();	797	ev_tstamp odiff = diff;
		798
		799	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		800	{
604	diff = ev_now - now;	801	diff = rt_now - mn_now;
605		802
606	if (fabs (odiff - diff) < MIN_TIMEJUMP)	803	if (fabs (odiff - diff) < MIN_TIMEJUMP)
607	return; /* all is well */	804	return; /* all is well */
608		805
609	ev_now = ev_time ();	806	rt_now = ev_time ();
		807	mn_now = get_clock ();
		808	now_floor = mn_now;
		809	}
		810
		811	periodics_reschedule (EV_A_ diff - odiff);
		812	/* no timer adjustment, as the monotonic clock doesn't jump */
610	}	813	}
611
612	periodics_reschedule (diff - odiff);
613	/* no timer adjustment, as the monotonic clock doesn't jump */
614	}	814	}
615	else	815	else
		816	#endif
616	{	817	{
617	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)	818	rt_now = ev_time ();
		819
		820	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
618	{	821	{
619	periodics_reschedule (ev_now - now);	822	periodics_reschedule (EV_A_ rt_now - mn_now);
620		823
621	/* adjust timers. this is easy, as the offset is the same for all */	824	/* adjust timers. this is easy, as the offset is the same for all */
622	for (i = 0; i < timercnt; ++i)	825	for (i = 0; i < timercnt; ++i)
623	timers [i]->at += diff;	826	timers [i]->at += diff;
624	}	827	}
625		828
626	now = ev_now;	829	mn_now = rt_now;
627	}	830	}
628	}	831	}
629		832
630	int ev_loop_done;	833	void
		834	ev_ref (EV_P)
		835	{
		836	++activecnt;
		837	}
631		838
		839	void
		840	ev_unref (EV_P)
		841	{
		842	--activecnt;
		843	}
		844
		845	static int loop_done;
		846
		847	void
632	void ev_loop (int flags)	848	ev_loop (EV_P_ int flags)
633	{	849	{
634	double block;	850	double block;
635	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	851	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
636		852
637	do	853	do
638	{	854	{
639	/* queue check watchers (and execute them) */	855	/* queue check watchers (and execute them) */
640	if (preparecnt)	856	if (expect_false (preparecnt))
641	{	857	{
642	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	858	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
643	call_pending ();	859	call_pending (EV_A);
644	}	860	}
645		861
646	/* update fd-related kernel structures */	862	/* update fd-related kernel structures */
647	fd_reify ();	863	fd_reify (EV_A);
648		864
649	/* calculate blocking time */	865	/* calculate blocking time */
650		866
651	/* we only need this for !monotonic clockor timers, but as we basically	867	/* we only need this for !monotonic clockor timers, but as we basically
652	always have timers, we just calculate it always */	868	always have timers, we just calculate it always */
		869	#if EV_USE_MONOTONIC
		870	if (expect_true (have_monotonic))
		871	time_update_monotonic (EV_A);
		872	else
		873	#endif
		874	{
653	ev_now = ev_time ();	875	rt_now = ev_time ();
		876	mn_now = rt_now;
		877	}
654		878
655	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	879	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
656	block = 0.;	880	block = 0.;
657	else	881	else
658	{	882	{
659	block = MAX_BLOCKTIME;	883	block = MAX_BLOCKTIME;
660		884
661	if (timercnt)	885	if (timercnt)
662	{	886	{
663	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	887	ev_tstamp to = timers [0]->at - mn_now + method_fudge;
664	if (block > to) block = to;	888	if (block > to) block = to;
665	}	889	}
666		890
667	if (periodiccnt)	891	if (periodiccnt)
668	{	892	{
669	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	893	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
670	if (block > to) block = to;	894	if (block > to) block = to;
671	}	895	}
672		896
673	if (block < 0.) block = 0.;	897	if (block < 0.) block = 0.;
674	}	898	}
675		899
676	method_poll (block);	900	method_poll (EV_A_ block);
677		901
678	/* update ev_now, do magic */	902	/* update rt_now, do magic */
679	time_update ();	903	time_update (EV_A);
680		904
681	/* queue pending timers and reschedule them */	905	/* queue pending timers and reschedule them */
682	timers_reify (); /* relative timers called last */	906	timers_reify (EV_A); /* relative timers called last */
683	periodics_reify (); /* absolute timers called first */	907	periodics_reify (EV_A); /* absolute timers called first */
684		908
685	/* queue idle watchers unless io or timers are pending */	909	/* queue idle watchers unless io or timers are pending */
686	if (!pendingcnt)	910	if (!pendingcnt)
687	queue_events ((W *)idles, idlecnt, EV_IDLE);	911	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
688		912
689	/* queue check watchers, to be executed first */	913	/* queue check watchers, to be executed first */
690	if (checkcnt)	914	if (checkcnt)
691	queue_events ((W *)checks, checkcnt, EV_CHECK);	915	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
692		916
693	call_pending ();	917	call_pending (EV_A);
694	}	918	}
695	while (!ev_loop_done);	919	while (activecnt && !loop_done);
696		920
697	if (ev_loop_done != 2)	921	if (loop_done != 2)
698	ev_loop_done = 0;	922	loop_done = 0;
		923	}
		924
		925	void
		926	ev_unloop (EV_P_ int how)
		927	{
		928	loop_done = how;
699	}	929	}
700		930
701	/*****************************************************************************/	931	/*****************************************************************************/
702		932
703	static void	933	inline void
704	wlist_add (WL *head, WL elem)	934	wlist_add (WL *head, WL elem)
705	{	935	{
706	elem->next = *head;	936	elem->next = *head;
707	*head = elem;	937	*head = elem;
708	}	938	}
709		939
710	static void	940	inline void
711	wlist_del (WL *head, WL elem)	941	wlist_del (WL *head, WL elem)
712	{	942	{
713	while (*head)	943	while (*head)
714	{	944	{
715	if (*head == elem)	945	if (*head == elem)
…		…
720		950
721	head = &(*head)->next;	951	head = &(*head)->next;
722	}	952	}
723	}	953	}
724		954
725	static void	955	inline void
726	ev_clear (W w)	956	ev_clear_pending (EV_P_ W w)
727	{	957	{
728	if (w->pending)	958	if (w->pending)
729	{	959	{
730	pendings [w->pending - 1].w = 0;	960	pendings [ABSPRI (w)][w->pending - 1].w = 0;
731	w->pending = 0;	961	w->pending = 0;
732	}	962	}
733	}	963	}
734		964
735	static void	965	inline void
736	ev_start (W w, int active)	966	ev_start (EV_P_ W w, int active)
737	{	967	{
		968	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		969	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		970
738	w->active = active;	971	w->active = active;
		972	ev_ref (EV_A);
739	}	973	}
740		974
741	static void	975	inline void
742	ev_stop (W w)	976	ev_stop (EV_P_ W w)
743	{	977	{
		978	ev_unref (EV_A);
744	w->active = 0;	979	w->active = 0;
745	}	980	}
746		981
747	/*****************************************************************************/	982	/*****************************************************************************/
748		983
749	void	984	void
750	ev_io_start (struct ev_io *w)	985	ev_io_start (EV_P_ struct ev_io *w)
751	{	986	{
		987	int fd = w->fd;
		988
752	if (ev_is_active (w))	989	if (ev_is_active (w))
753	return;	990	return;
754		991
755	int fd = w->fd;	992	assert (("ev_io_start called with negative fd", fd >= 0));
756		993
757	ev_start ((W)w, 1);	994	ev_start (EV_A_ (W)w, 1);
758	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	995	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
759	wlist_add ((WL *)&anfds[fd].head, (WL)w);	996	wlist_add ((WL *)&anfds[fd].head, (WL)w);
760		997
761	fd_change (fd);	998	fd_change (EV_A_ fd);
762	}	999	}
763		1000
764	void	1001	void
765	ev_io_stop (struct ev_io *w)	1002	ev_io_stop (EV_P_ struct ev_io *w)
766	{	1003	{
767	ev_clear ((W)w);	1004	ev_clear_pending (EV_A_ (W)w);
768	if (!ev_is_active (w))	1005	if (!ev_is_active (w))
769	return;	1006	return;
770		1007
771	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1008	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
772	ev_stop ((W)w);	1009	ev_stop (EV_A_ (W)w);
773		1010
774	fd_change (w->fd);	1011	fd_change (EV_A_ w->fd);
775	}	1012	}
776		1013
777	void	1014	void
778	ev_timer_start (struct ev_timer *w)	1015	ev_timer_start (EV_P_ struct ev_timer *w)
779	{	1016	{
780	if (ev_is_active (w))	1017	if (ev_is_active (w))
781	return;	1018	return;
782		1019
783	w->at += now;	1020	w->at += mn_now;
784		1021
785	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1022	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
786		1023
787	ev_start ((W)w, ++timercnt);	1024	ev_start (EV_A_ (W)w, ++timercnt);
788	array_needsize (timers, timermax, timercnt, );	1025	array_needsize (timers, timermax, timercnt, );
789	timers [timercnt - 1] = w;	1026	timers [timercnt - 1] = w;
790	upheap ((WT *)timers, timercnt - 1);	1027	upheap ((WT *)timers, timercnt - 1);
791	}	1028	}
792		1029
793	void	1030	void
794	ev_timer_stop (struct ev_timer *w)	1031	ev_timer_stop (EV_P_ struct ev_timer *w)
795	{	1032	{
796	ev_clear ((W)w);	1033	ev_clear_pending (EV_A_ (W)w);
797	if (!ev_is_active (w))	1034	if (!ev_is_active (w))
798	return;	1035	return;
799		1036
800	if (w->active < timercnt--)	1037	if (w->active < timercnt--)
801	{	1038	{
…		…
803	downheap ((WT *)timers, timercnt, w->active - 1);	1040	downheap ((WT *)timers, timercnt, w->active - 1);
804	}	1041	}
805		1042
806	w->at = w->repeat;	1043	w->at = w->repeat;
807		1044
808	ev_stop ((W)w);	1045	ev_stop (EV_A_ (W)w);
809	}	1046	}
810		1047
811	void	1048	void
812	ev_timer_again (struct ev_timer *w)	1049	ev_timer_again (EV_P_ struct ev_timer *w)
813	{	1050	{
814	if (ev_is_active (w))	1051	if (ev_is_active (w))
815	{	1052	{
816	if (w->repeat)	1053	if (w->repeat)
817	{	1054	{
818	w->at = now + w->repeat;	1055	w->at = mn_now + w->repeat;
819	downheap ((WT *)timers, timercnt, w->active - 1);	1056	downheap ((WT *)timers, timercnt, w->active - 1);
820	}	1057	}
821	else	1058	else
822	ev_timer_stop (w);	1059	ev_timer_stop (EV_A_ w);
823	}	1060	}
824	else if (w->repeat)	1061	else if (w->repeat)
825	ev_timer_start (w);	1062	ev_timer_start (EV_A_ w);
826	}	1063	}
827		1064
828	void	1065	void
829	ev_periodic_start (struct ev_periodic *w)	1066	ev_periodic_start (EV_P_ struct ev_periodic *w)
830	{	1067	{
831	if (ev_is_active (w))	1068	if (ev_is_active (w))
832	return;	1069	return;
833		1070
834	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1071	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
835		1072
836	/* this formula differs from the one in periodic_reify because we do not always round up */	1073	/* this formula differs from the one in periodic_reify because we do not always round up */
837	if (w->interval)	1074	if (w->interval)
838	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1075	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
839		1076
840	ev_start ((W)w, ++periodiccnt);	1077	ev_start (EV_A_ (W)w, ++periodiccnt);
841	array_needsize (periodics, periodicmax, periodiccnt, );	1078	array_needsize (periodics, periodicmax, periodiccnt, );
842	periodics [periodiccnt - 1] = w;	1079	periodics [periodiccnt - 1] = w;
843	upheap ((WT *)periodics, periodiccnt - 1);	1080	upheap ((WT *)periodics, periodiccnt - 1);
844	}	1081	}
845		1082
846	void	1083	void
847	ev_periodic_stop (struct ev_periodic *w)	1084	ev_periodic_stop (EV_P_ struct ev_periodic *w)
848	{	1085	{
849	ev_clear ((W)w);	1086	ev_clear_pending (EV_A_ (W)w);
850	if (!ev_is_active (w))	1087	if (!ev_is_active (w))
851	return;	1088	return;
852		1089
853	if (w->active < periodiccnt--)	1090	if (w->active < periodiccnt--)
854	{	1091	{
855	periodics [w->active - 1] = periodics [periodiccnt];	1092	periodics [w->active - 1] = periodics [periodiccnt];
856	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1093	downheap ((WT *)periodics, periodiccnt, w->active - 1);
857	}	1094	}
858		1095
859	ev_stop ((W)w);	1096	ev_stop (EV_A_ (W)w);
860	}	1097	}
861		1098
		1099	#ifndef SA_RESTART
		1100	# define SA_RESTART 0
		1101	#endif
		1102
862	void	1103	void
863	ev_signal_start (struct ev_signal *w)	1104	ev_signal_start (EV_P_ struct ev_signal *w)
864	{	1105	{
865	if (ev_is_active (w))	1106	if (ev_is_active (w))
866	return;	1107	return;
867		1108
		1109	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1110
868	ev_start ((W)w, 1);	1111	ev_start (EV_A_ (W)w, 1);
869	array_needsize (signals, signalmax, w->signum, signals_init);	1112	array_needsize (signals, signalmax, w->signum, signals_init);
870	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1113	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
871		1114
872	if (!w->next)	1115	if (!w->next)
873	{	1116	{
874	struct sigaction sa;	1117	struct sigaction sa;
875	sa.sa_handler = sighandler;	1118	sa.sa_handler = sighandler;
876	sigfillset (&sa.sa_mask);	1119	sigfillset (&sa.sa_mask);
877	sa.sa_flags = 0;	1120	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
878	sigaction (w->signum, &sa, 0);	1121	sigaction (w->signum, &sa, 0);
879	}	1122	}
880	}	1123	}
881		1124
882	void	1125	void
883	ev_signal_stop (struct ev_signal *w)	1126	ev_signal_stop (EV_P_ struct ev_signal *w)
884	{	1127	{
885	ev_clear ((W)w);	1128	ev_clear_pending (EV_A_ (W)w);
886	if (!ev_is_active (w))	1129	if (!ev_is_active (w))
887	return;	1130	return;
888		1131
889	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1132	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
890	ev_stop ((W)w);	1133	ev_stop (EV_A_ (W)w);
891		1134
892	if (!signals [w->signum - 1].head)	1135	if (!signals [w->signum - 1].head)
893	signal (w->signum, SIG_DFL);	1136	signal (w->signum, SIG_DFL);
894	}	1137	}
895		1138
896	void	1139	void
897	ev_idle_start (struct ev_idle *w)	1140	ev_idle_start (EV_P_ struct ev_idle *w)
898	{	1141	{
899	if (ev_is_active (w))	1142	if (ev_is_active (w))
900	return;	1143	return;
901		1144
902	ev_start ((W)w, ++idlecnt);	1145	ev_start (EV_A_ (W)w, ++idlecnt);
903	array_needsize (idles, idlemax, idlecnt, );	1146	array_needsize (idles, idlemax, idlecnt, );
904	idles [idlecnt - 1] = w;	1147	idles [idlecnt - 1] = w;
905	}	1148	}
906		1149
907	void	1150	void
908	ev_idle_stop (struct ev_idle *w)	1151	ev_idle_stop (EV_P_ struct ev_idle *w)
909	{	1152	{
910	ev_clear ((W)w);	1153	ev_clear_pending (EV_A_ (W)w);
911	if (ev_is_active (w))	1154	if (ev_is_active (w))
912	return;	1155	return;
913		1156
914	idles [w->active - 1] = idles [--idlecnt];	1157	idles [w->active - 1] = idles [--idlecnt];
915	ev_stop ((W)w);	1158	ev_stop (EV_A_ (W)w);
916	}	1159	}
917		1160
918	void	1161	void
919	ev_prepare_start (struct ev_prepare *w)	1162	ev_prepare_start (EV_P_ struct ev_prepare *w)
920	{	1163	{
921	if (ev_is_active (w))	1164	if (ev_is_active (w))
922	return;	1165	return;
923		1166
924	ev_start ((W)w, ++preparecnt);	1167	ev_start (EV_A_ (W)w, ++preparecnt);
925	array_needsize (prepares, preparemax, preparecnt, );	1168	array_needsize (prepares, preparemax, preparecnt, );
926	prepares [preparecnt - 1] = w;	1169	prepares [preparecnt - 1] = w;
927	}	1170	}
928		1171
929	void	1172	void
930	ev_prepare_stop (struct ev_prepare *w)	1173	ev_prepare_stop (EV_P_ struct ev_prepare *w)
931	{	1174	{
932	ev_clear ((W)w);	1175	ev_clear_pending (EV_A_ (W)w);
933	if (ev_is_active (w))	1176	if (ev_is_active (w))
934	return;	1177	return;
935		1178
936	prepares [w->active - 1] = prepares [--preparecnt];	1179	prepares [w->active - 1] = prepares [--preparecnt];
937	ev_stop ((W)w);	1180	ev_stop (EV_A_ (W)w);
938	}	1181	}
939		1182
940	void	1183	void
941	ev_check_start (struct ev_check *w)	1184	ev_check_start (EV_P_ struct ev_check *w)
942	{	1185	{
943	if (ev_is_active (w))	1186	if (ev_is_active (w))
944	return;	1187	return;
945		1188
946	ev_start ((W)w, ++checkcnt);	1189	ev_start (EV_A_ (W)w, ++checkcnt);
947	array_needsize (checks, checkmax, checkcnt, );	1190	array_needsize (checks, checkmax, checkcnt, );
948	checks [checkcnt - 1] = w;	1191	checks [checkcnt - 1] = w;
949	}	1192	}
950		1193
951	void	1194	void
952	ev_check_stop (struct ev_check *w)	1195	ev_check_stop (EV_P_ struct ev_check *w)
953	{	1196	{
954	ev_clear ((W)w);	1197	ev_clear_pending (EV_A_ (W)w);
955	if (ev_is_active (w))	1198	if (ev_is_active (w))
956	return;	1199	return;
957		1200
958	checks [w->active - 1] = checks [--checkcnt];	1201	checks [w->active - 1] = checks [--checkcnt];
959	ev_stop ((W)w);	1202	ev_stop (EV_A_ (W)w);
960	}	1203	}
961		1204
962	void	1205	void
963	ev_child_start (struct ev_child *w)	1206	ev_child_start (EV_P_ struct ev_child *w)
964	{	1207	{
965	if (ev_is_active (w))	1208	if (ev_is_active (w))
966	return;	1209	return;
967		1210
968	ev_start ((W)w, 1);	1211	ev_start (EV_A_ (W)w, 1);
969	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1212	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
970	}	1213	}
971		1214
972	void	1215	void
973	ev_child_stop (struct ev_child *w)	1216	ev_child_stop (EV_P_ struct ev_child *w)
974	{	1217	{
975	ev_clear ((W)w);	1218	ev_clear_pending (EV_A_ (W)w);
976	if (ev_is_active (w))	1219	if (ev_is_active (w))
977	return;	1220	return;
978		1221
979	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1222	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
980	ev_stop ((W)w);	1223	ev_stop (EV_A_ (W)w);
981	}	1224	}
982		1225
983	/*****************************************************************************/	1226	/*****************************************************************************/
984		1227
985	struct ev_once	1228	struct ev_once
…		…
989	void (cb)(int revents, void arg);	1232	void (cb)(int revents, void arg);
990	void *arg;	1233	void *arg;
991	};	1234	};
992		1235
993	static void	1236	static void
994	once_cb (struct ev_once *once, int revents)	1237	once_cb (EV_P_ struct ev_once *once, int revents)
995	{	1238	{
996	void (cb)(int revents, void arg) = once->cb;	1239	void (cb)(int revents, void arg) = once->cb;
997	void *arg = once->arg;	1240	void *arg = once->arg;
998		1241
999	ev_io_stop (&once->io);	1242	ev_io_stop (EV_A_ &once->io);
1000	ev_timer_stop (&once->to);	1243	ev_timer_stop (EV_A_ &once->to);
1001	free (once);	1244	free (once);
1002		1245
1003	cb (revents, arg);	1246	cb (revents, arg);
1004	}	1247	}
1005		1248
1006	static void	1249	static void
1007	once_cb_io (struct ev_io *w, int revents)	1250	once_cb_io (EV_P_ struct ev_io *w, int revents)
1008	{	1251	{
1009	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1252	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1010	}	1253	}
1011		1254
1012	static void	1255	static void
1013	once_cb_to (struct ev_timer *w, int revents)	1256	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1014	{	1257	{
1015	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1258	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1016	}	1259	}
1017		1260
1018	void	1261	void
1019	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1262	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1020	{	1263	{
1021	struct ev_once *once = malloc (sizeof (struct ev_once));	1264	struct ev_once *once = malloc (sizeof (struct ev_once));
1022		1265
1023	if (!once)	1266	if (!once)
1024	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1267	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
…		…
1029		1272
1030	ev_watcher_init (&once->io, once_cb_io);	1273	ev_watcher_init (&once->io, once_cb_io);
1031	if (fd >= 0)	1274	if (fd >= 0)
1032	{	1275	{
1033	ev_io_set (&once->io, fd, events);	1276	ev_io_set (&once->io, fd, events);
1034	ev_io_start (&once->io);	1277	ev_io_start (EV_A_ &once->io);
1035	}	1278	}
1036		1279
1037	ev_watcher_init (&once->to, once_cb_to);	1280	ev_watcher_init (&once->to, once_cb_to);
1038	if (timeout >= 0.)	1281	if (timeout >= 0.)
1039	{	1282	{
1040	ev_timer_set (&once->to, timeout, 0.);	1283	ev_timer_set (&once->to, timeout, 0.);
1041	ev_timer_start (&once->to);	1284	ev_timer_start (EV_A_ &once->to);
1042	}	1285	}
1043	}	1286	}
1044	}	1287	}
1045		1288
1046	/*****************************************************************************/	1289	/*****************************************************************************/

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Comparing libev/ev.c (file contents): Revision 1.30 by root, Thu Nov 1 08:28:33 2007 UTC vs. Revision 1.52 by root, Sat Nov 3 22:10:39 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.30 by root, Thu Nov 1 08:28:33 2007 UTC vs.
Revision 1.52 by root, Sat Nov 3 22:10:39 2007 UTC