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

Comparing libev/ev.c (file contents):
Revision 1.31 by root, Thu Nov 1 09:05:33 2007 UTC vs.
Revision 1.52 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
		75	#ifndef EV_USE_REALTIME
		76	# define EV_USE_REALTIME 1
		77	#endif
		78
		79	/**/
		80
		81	#ifndef CLOCK_MONOTONIC
		82	# undef EV_USE_MONOTONIC
		83	# define EV_USE_MONOTONIC 0
		84	#endif
		85
63	#ifndef CLOCK_REALTIME	86	#ifndef CLOCK_REALTIME
		87	# undef EV_USE_REALTIME
64	# define EV_USE_REALTIME 0	88	# define EV_USE_REALTIME 0
65	#endif	89	#endif
66	#ifndef EV_USE_REALTIME	90
67	# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */	91	/**/
68	#endif
69		92
70	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
71	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detetc time jumps) */	94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
72	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
73	#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */	96	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
74		97
75	#include "ev.h"	98	#include "ev.h"
		99
		100	#if __GNUC__ >= 3
		101	# define expect(expr,value) __builtin_expect ((expr),(value))
		102	# define inline inline
		103	#else
		104	# define expect(expr,value) (expr)
		105	# define inline static
		106	#endif
		107
		108	#define expect_false(expr) expect ((expr) != 0, 0)
		109	#define expect_true(expr) expect ((expr) != 0, 1)
		110
		111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
76		113
77	typedef struct ev_watcher *W;	114	typedef struct ev_watcher *W;
78	typedef struct ev_watcher_list *WL;	115	typedef struct ev_watcher_list *WL;
79	typedef struct ev_watcher_time *WT;	116	typedef struct ev_watcher_time *WT;
80		117
81	static ev_tstamp now, diff; /* monotonic clock */	118	static ev_tstamp now_floor, mn_now, diff; /* monotonic clock */
82	ev_tstamp ev_now;	119	static ev_tstamp rt_now;
83	int ev_method;	120	static int method;
84		121
85	static int have_monotonic; /* runtime */	122	static int have_monotonic; /* runtime */
86		123
87	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
88	static void (*method_modify)(int fd, int oev, int nev);	125	static void (*method_modify)(EV_P_ int fd, int oev, int nev);
89	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
90		156
91	/*****************************************************************************/	157	/*****************************************************************************/
92		158
93	ev_tstamp	159	inline ev_tstamp
94	ev_time (void)	160	ev_time (void)
95	{	161	{
96	#if EV_USE_REALTIME	162	#if EV_USE_REALTIME
97	struct timespec ts;	163	struct timespec ts;
98	clock_gettime (CLOCK_REALTIME, &ts);	164	clock_gettime (CLOCK_REALTIME, &ts);
…		…
102	gettimeofday (&tv, 0);	168	gettimeofday (&tv, 0);
103	return tv.tv_sec + tv.tv_usec * 1e-6;	169	return tv.tv_sec + tv.tv_usec * 1e-6;
104	#endif	170	#endif
105	}	171	}
106		172
107	static ev_tstamp	173	inline ev_tstamp
108	get_clock (void)	174	get_clock (void)
109	{	175	{
110	#if EV_USE_MONOTONIC	176	#if EV_USE_MONOTONIC
111	if (have_monotonic)	177	if (expect_true (have_monotonic))
112	{	178	{
113	struct timespec ts;	179	struct timespec ts;
114	clock_gettime (CLOCK_MONOTONIC, &ts);	180	clock_gettime (CLOCK_MONOTONIC, &ts);
115	return ts.tv_sec + ts.tv_nsec * 1e-9;	181	return ts.tv_sec + ts.tv_nsec * 1e-9;
116	}	182	}
117	#endif	183	#endif
118		184
119	return ev_time ();	185	return ev_time ();
120	}	186	}
121		187
		188	ev_tstamp
		189	ev_now (EV_P)
		190	{
		191	return rt_now;
		192	}
		193
122	#define array_roundsize(base,n) ((n) \| 4 & ~3)	194	#define array_roundsize(base,n) ((n) \| 4 & ~3)
123		195
124	#define array_needsize(base,cur,cnt,init) \	196	#define array_needsize(base,cur,cnt,init) \
125	if ((cnt) > cur) \	197	if (expect_false ((cnt) > cur)) \
126	{ \	198	{ \
127	int newcnt = cur; \	199	int newcnt = cur; \
128	do \	200	do \
129	{ \	201	{ \
130	newcnt = array_roundsize (base, newcnt << 1); \	202	newcnt = array_roundsize (base, newcnt << 1); \
…		…
138		210
139	/*****************************************************************************/	211	/*****************************************************************************/
140		212
141	typedef struct	213	typedef struct
142	{	214	{
143	struct ev_io *head;	215	struct ev_watcher_list *head;
144	int events;	216	unsigned char events;
		217	unsigned char reify;
145	} ANFD;	218	} ANFD;
146		219
147	static ANFD *anfds;	220	static ANFD *anfds;
148	static int anfdmax;	221	static int anfdmax;
149		222
…		…
152	{	225	{
153	while (count--)	226	while (count--)
154	{	227	{
155	base->head = 0;	228	base->head = 0;
156	base->events = EV_NONE;	229	base->events = EV_NONE;
		230	base->reify = 0;
		231
157	++base;	232	++base;
158	}	233	}
159	}	234	}
160		235
161	typedef struct	236	typedef struct
162	{	237	{
163	W w;	238	W w;
164	int events;	239	int events;
165	} ANPENDING;	240	} ANPENDING;
166		241
167	static ANPENDING *pendings;	242	static ANPENDING *pendings [NUMPRI];
168	static int pendingmax, pendingcnt;	243	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
169		244
170	static void	245	static void
171	event (W w, int events)	246	event (EV_P_ W w, int events)
172	{	247	{
		248	if (w->pending)
		249	{
		250	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
		251	return;
		252	}
		253
173	w->pending = ++pendingcnt;	254	w->pending = ++pendingcnt [ABSPRI (w)];
174	array_needsize (pendings, pendingmax, pendingcnt, );	255	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
175	pendings [pendingcnt - 1].w = w;	256	pendings [ABSPRI (w)][w->pending - 1].w = w;
176	pendings [pendingcnt - 1].events = events;	257	pendings [ABSPRI (w)][w->pending - 1].events = events;
177	}	258	}
178		259
179	static void	260	static void
180	queue_events (W *events, int eventcnt, int type)	261	queue_events (EV_P_ W *events, int eventcnt, int type)
181	{	262	{
182	int i;	263	int i;
183		264
184	for (i = 0; i < eventcnt; ++i)	265	for (i = 0; i < eventcnt; ++i)
185	event (events [i], type);	266	event (EV_A_ events [i], type);
186	}	267	}
187		268
188	static void	269	static void
189	fd_event (int fd, int events)	270	fd_event (EV_P_ int fd, int events)
190	{	271	{
191	ANFD *anfd = anfds + fd;	272	ANFD *anfd = anfds + fd;
192	struct ev_io *w;	273	struct ev_io *w;
193		274
194	for (w = anfd->head; w; w = w->next)	275	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
195	{	276	{
196	int ev = w->events & events;	277	int ev = w->events & events;
197		278
198	if (ev)	279	if (ev)
199	event ((W)w, ev);	280	event (EV_A_ (W)w, ev);
200	}	281	}
201	}	282	}
202		283
203	/*****************************************************************************/	284	/*****************************************************************************/
204		285
205	static int *fdchanges;	286	static int *fdchanges;
206	static int fdchangemax, fdchangecnt;	287	static int fdchangemax, fdchangecnt;
207		288
208	static void	289	static void
209	fd_reify (void)	290	fd_reify (EV_P)
210	{	291	{
211	int i;	292	int i;
212		293
213	for (i = 0; i < fdchangecnt; ++i)	294	for (i = 0; i < fdchangecnt; ++i)
214	{	295	{
…		…
216	ANFD *anfd = anfds + fd;	297	ANFD *anfd = anfds + fd;
217	struct ev_io *w;	298	struct ev_io *w;
218		299
219	int events = 0;	300	int events = 0;
220		301
221	for (w = anfd->head; w; w = w->next)	302	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
222	events \|= w->events;	303	events \|= w->events;
223		304
224	anfd->events &= ~EV_REIFY;	305	anfd->reify = 0;
225		306
226	if (anfd->events != events)	307	if (anfd->events != events)
227	{	308	{
228	method_modify (fd, anfd->events, events);	309	method_modify (EV_A_ fd, anfd->events, events);
229	anfd->events = events;	310	anfd->events = events;
230	}	311	}
231	}	312	}
232		313
233	fdchangecnt = 0;	314	fdchangecnt = 0;
234	}	315	}
235		316
236	static void	317	static void
237	fd_change (int fd)	318	fd_change (EV_P_ int fd)
238	{	319	{
239	if (anfds [fd].events & EV_REIFY \|\| fdchangecnt < 0)	320	if (anfds [fd].reify \|\| fdchangecnt < 0)
240	return;	321	return;
241		322
242	anfds [fd].events \|= EV_REIFY;	323	anfds [fd].reify = 1;
243		324
244	++fdchangecnt;	325	++fdchangecnt;
245	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	326	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
246	fdchanges [fdchangecnt - 1] = fd;	327	fdchanges [fdchangecnt - 1] = fd;
247	}	328	}
248		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
249	/* called on EBADF to verify fds */	342	/* called on EBADF to verify fds */
250	static void	343	static void
251	fd_recheck (void)	344	fd_ebadf (EV_P)
252	{	345	{
253	int fd;	346	int fd;
254		347
255	for (fd = 0; fd < anfdmax; ++fd)	348	for (fd = 0; fd < anfdmax; ++fd)
256	if (anfds [fd].events)	349	if (anfds [fd].events)
257	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	350	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
258	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)
259	{	362	{
260	event ((W)anfds [fd].head, EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT);	363	close (fd);
261	ev_io_stop (anfds [fd].head);	364	fd_kill (EV_A_ fd);
		365	return;
262	}	366	}
263	}	367	}
264		368
265	/*****************************************************************************/	369	/*****************************************************************************/
266		370
267	static struct ev_timer **timers;	371	static struct ev_timer **timers;
…		…
313		417
314	/*****************************************************************************/	418	/*****************************************************************************/
315		419
316	typedef struct	420	typedef struct
317	{	421	{
318	struct ev_signal *head;	422	struct ev_watcher_list *head;
319	sig_atomic_t gotsig;	423	sig_atomic_t volatile gotsig;
320	} ANSIG;	424	} ANSIG;
321		425
322	static ANSIG *signals;	426	static ANSIG *signals;
323	static int signalmax;	427	static int signalmax;
324		428
325	static int sigpipe [2];	429	static int sigpipe [2];
326	static sig_atomic_t gotsig;	430	static sig_atomic_t volatile gotsig;
327	static struct ev_io sigev;	431	static struct ev_io sigev;
328		432
329	static void	433	static void
330	signals_init (ANSIG *base, int count)	434	signals_init (ANSIG *base, int count)
331	{	435	{
332	while (count--)	436	while (count--)
333	{	437	{
334	base->head = 0;	438	base->head = 0;
335	base->gotsig = 0;	439	base->gotsig = 0;
		440
336	++base;	441	++base;
337	}	442	}
338	}	443	}
339		444
340	static void	445	static void
…		…
342	{	447	{
343	signals [signum - 1].gotsig = 1;	448	signals [signum - 1].gotsig = 1;
344		449
345	if (!gotsig)	450	if (!gotsig)
346	{	451	{
		452	int old_errno = errno;
347	gotsig = 1;	453	gotsig = 1;
348	write (sigpipe [1], &gotsig, 1);	454	write (sigpipe [1], &signum, 1);
		455	errno = old_errno;
349	}	456	}
350	}	457	}
351		458
352	static void	459	static void
353	sigcb (struct ev_io *iow, int revents)	460	sigcb (EV_P_ struct ev_io *iow, int revents)
354	{	461	{
355	struct ev_signal *w;	462	struct ev_watcher_list *w;
356	int sig;	463	int signum;
357		464
		465	read (sigpipe [0], &revents, 1);
358	gotsig = 0;	466	gotsig = 0;
359	read (sigpipe [0], &revents, 1);
360		467
361	for (sig = signalmax; sig--; )	468	for (signum = signalmax; signum--; )
362	if (signals [sig].gotsig)	469	if (signals [signum].gotsig)
363	{	470	{
364	signals [sig].gotsig = 0;	471	signals [signum].gotsig = 0;
365		472
366	for (w = signals [sig].head; w; w = w->next)	473	for (w = signals [signum].head; w; w = w->next)
367	event ((W)w, EV_SIGNAL);	474	event (EV_A_ (W)w, EV_SIGNAL);
368	}	475	}
369	}	476	}
370		477
371	static void	478	static void
372	siginit (void)	479	siginit (EV_P)
373	{	480	{
		481	#ifndef WIN32
374	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	482	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
375	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	483	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
376		484
377	/* rather than sort out wether we really need nb, set it */	485	/* rather than sort out wether we really need nb, set it */
378	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	486	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
379	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	487	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		488	#endif
380		489
381	ev_io_set (&sigev, sigpipe [0], EV_READ);	490	ev_io_set (&sigev, sigpipe [0], EV_READ);
382	ev_io_start (&sigev);	491	ev_io_start (&sigev);
		492	ev_unref (EV_A); /* child watcher should not keep loop alive */
383	}	493	}
384		494
385	/*****************************************************************************/	495	/*****************************************************************************/
386		496
387	static struct ev_idle **idles;	497	static struct ev_idle **idles;
…		…
396	/*****************************************************************************/	506	/*****************************************************************************/
397		507
398	static struct ev_child *childs [PID_HASHSIZE];	508	static struct ev_child *childs [PID_HASHSIZE];
399	static struct ev_signal childev;	509	static struct ev_signal childev;
400		510
		511	#ifndef WIN32
		512
401	#ifndef WCONTINUED	513	#ifndef WCONTINUED
402	# define WCONTINUED 0	514	# define WCONTINUED 0
403	#endif	515	#endif
404		516
405	static void	517	static void
406	childcb (struct ev_signal *sw, int revents)	518	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
407	{	519	{
408	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	{
409	int pid, status;	535	int pid, status;
410		536
411	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	537	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
412	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	538	{
413	if (w->pid == pid \|\| w->pid == -1)	539	/* make sure we are called again until all childs have been reaped */
414	{	540	event (EV_A_ (W)sw, EV_SIGNAL);
415	w->status = status;	541
416	event ((W)w, EV_CHILD);	542	child_reap (EV_A_ sw, pid, pid, status);
417	}	543	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		544	}
418	}	545	}
		546
		547	#endif
419		548
420	/*****************************************************************************/	549	/*****************************************************************************/
421		550
		551	#if EV_USE_KQUEUE
		552	# include "ev_kqueue.c"
		553	#endif
422	#if EV_USE_EPOLL	554	#if EV_USE_EPOLL
423	# include "ev_epoll.c"	555	# include "ev_epoll.c"
424	#endif	556	#endif
		557	#if EV_USEV_POLL
		558	# include "ev_poll.c"
		559	#endif
425	#if EV_USE_SELECT	560	#if EV_USE_SELECT
426	# include "ev_select.c"	561	# include "ev_select.c"
427	#endif	562	#endif
428		563
429	int	564	int
…		…
436	ev_version_minor (void)	571	ev_version_minor (void)
437	{	572	{
438	return EV_VERSION_MINOR;	573	return EV_VERSION_MINOR;
439	}	574	}
440		575
441	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)
442	{	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	{
443	if (!ev_method)	597	if (!method)
444	{	598	{
445	#if EV_USE_MONOTONIC	599	#if EV_USE_MONOTONIC
446	{	600	{
447	struct timespec ts;	601	struct timespec ts;
448	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	602	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
449	have_monotonic = 1;	603	have_monotonic = 1;
450	}	604	}
451	#endif	605	#endif
452		606
453	ev_now = ev_time ();	607	rt_now = ev_time ();
454	now = get_clock ();	608	mn_now = get_clock ();
		609	now_floor = mn_now;
455	diff = ev_now - now;	610	diff = rt_now - mn_now;
456		611
457	if (pipe (sigpipe))	612	if (pipe (sigpipe))
458	return 0;	613	return 0;
459		614
		615	if (methods == EVMETHOD_AUTO)
		616	if (!enable_secure () && getenv ("LIBmethodS"))
		617	methods = atoi (getenv ("LIBmethodS"));
		618	else
460	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
461	#if EV_USE_EPOLL	625	#if EV_USE_EPOLL
462	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);
463	#endif	630	#endif
464	#if EV_USE_SELECT	631	#if EV_USE_SELECT
465	if (ev_method == EVMETHOD_NONE) select_init (flags);	632	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
466	#endif	633	#endif
467		634
468	if (ev_method)	635	if (method)
469	{	636	{
470	ev_watcher_init (&sigev, sigcb);	637	ev_watcher_init (&sigev, sigcb);
		638	ev_set_priority (&sigev, EV_MAXPRI);
471	siginit ();	639	siginit (EV_A);
472		640
		641	#ifndef WIN32
473	ev_signal_init (&childev, childcb, SIGCHLD);	642	ev_signal_init (&childev, childcb, SIGCHLD);
		643	ev_set_priority (&childev, EV_MAXPRI);
474	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
475	}	647	}
476	}	648	}
477		649
478	return ev_method;	650	return method;
479	}	651	}
480		652
481	/*****************************************************************************/	653	/*****************************************************************************/
482		654
483	void	655	void
484	ev_prefork (void)	656	ev_fork_prepare (void)
485	{	657	{
486	/* nop */	658	/* nop */
487	}	659	}
488		660
489	void	661	void
490	ev_postfork_parent (void)	662	ev_fork_parent (void)
491	{	663	{
492	/* nop */	664	/* nop */
493	}	665	}
494		666
495	void	667	void
496	ev_postfork_child (void)	668	ev_fork_child (void)
497	{	669	{
498	#if EV_USE_EPOLL	670	#if EV_USE_EPOLL
499	if (ev_method == EVMETHOD_EPOLL)	671	if (method == EVMETHOD_EPOLL)
500	epoll_postfork_child ();	672	epoll_postfork_child ();
501	#endif	673	#endif
502		674
503	ev_io_stop (&sigev);	675	ev_io_stop (&sigev);
504	close (sigpipe [0]);	676	close (sigpipe [0]);
…		…
508	}	680	}
509		681
510	/*****************************************************************************/	682	/*****************************************************************************/
511		683
512	static void	684	static void
513	call_pending (void)	685	call_pending (EV_P)
514	{	686	{
		687	int pri;
		688
		689	for (pri = NUMPRI; pri--; )
515	while (pendingcnt)	690	while (pendingcnt [pri])
516	{	691	{
517	ANPENDING *p = pendings + --pendingcnt;	692	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
518		693
519	if (p->w)	694	if (p->w)
520	{	695	{
521	p->w->pending = 0;	696	p->w->pending = 0;
522	p->w->cb (p->w, p->events);	697	p->w->cb (EV_A_ p->w, p->events);
523	}	698	}
524	}	699	}
525	}	700	}
526		701
527	static void	702	static void
528	timers_reify (void)	703	timers_reify (EV_P)
529	{	704	{
530	while (timercnt && timers [0]->at <= now)	705	while (timercnt && timers [0]->at <= mn_now)
531	{	706	{
532	struct ev_timer *w = timers [0];	707	struct ev_timer *w = timers [0];
533		708
534	/* first reschedule or stop timer */	709	/* first reschedule or stop timer */
535	if (w->repeat)	710	if (w->repeat)
536	{	711	{
		712	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
537	w->at = now + w->repeat;	713	w->at = mn_now + w->repeat;
538	assert (("timer timeout in the past, negative repeat?", w->at > now));
539	downheap ((WT *)timers, timercnt, 0);	714	downheap ((WT *)timers, timercnt, 0);
540	}	715	}
541	else	716	else
542	ev_timer_stop (w); /* nonrepeating: stop timer */	717	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
543		718
544	event ((W)w, EV_TIMEOUT);	719	event ((W)w, EV_TIMEOUT);
545	}	720	}
546	}	721	}
547		722
548	static void	723	static void
549	periodics_reify (void)	724	periodics_reify (EV_P)
550	{	725	{
551	while (periodiccnt && periodics [0]->at <= ev_now)	726	while (periodiccnt && periodics [0]->at <= rt_now)
552	{	727	{
553	struct ev_periodic *w = periodics [0];	728	struct ev_periodic *w = periodics [0];
554		729
555	/* first reschedule or stop timer */	730	/* first reschedule or stop timer */
556	if (w->interval)	731	if (w->interval)
557	{	732	{
558	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;
559	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));
560	downheap ((WT *)periodics, periodiccnt, 0);	735	downheap ((WT *)periodics, periodiccnt, 0);
561	}	736	}
562	else	737	else
563	ev_periodic_stop (w); /* nonrepeating: stop timer */	738	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
564		739
565	event ((W)w, EV_TIMEOUT);	740	event (EV_A_ (W)w, EV_PERIODIC);
566	}	741	}
567	}	742	}
568		743
569	static void	744	static void
570	periodics_reschedule (ev_tstamp diff)	745	periodics_reschedule (EV_P_ ev_tstamp diff)
571	{	746	{
572	int i;	747	int i;
573		748
574	/* adjust periodics after time jump */	749	/* adjust periodics after time jump */
575	for (i = 0; i < periodiccnt; ++i)	750	for (i = 0; i < periodiccnt; ++i)
576	{	751	{
577	struct ev_periodic *w = periodics [i];	752	struct ev_periodic *w = periodics [i];
578		753
579	if (w->interval)	754	if (w->interval)
580	{	755	{
581	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;
582		757
583	if (fabs (diff) >= 1e-4)	758	if (fabs (diff) >= 1e-4)
584	{	759	{
585	ev_periodic_stop (w);	760	ev_periodic_stop (EV_A_ w);
586	ev_periodic_start (w);	761	ev_periodic_start (EV_A_ w);
587		762
588	i = 0; /* restart loop, inefficient, but time jumps should be rare */	763	i = 0; /* restart loop, inefficient, but time jumps should be rare */
589	}	764	}
590	}	765	}
591	}	766	}
592	}	767	}
593		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
594	static void	787	static void
595	time_update (void)	788	time_update (EV_P)
596	{	789	{
597	int i;	790	int i;
598		791
599	ev_now = ev_time ();	792	#if EV_USE_MONOTONIC
600
601	if (have_monotonic)	793	if (expect_true (have_monotonic))
602	{	794	{
603	ev_tstamp odiff = diff;	795	if (time_update_monotonic (EV_A))
604
605	for (i = 4; --i; ) /* loop a few times, before making important decisions */
606	{	796	{
607	now = get_clock ();	797	ev_tstamp odiff = diff;
		798
		799	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		800	{
608	diff = ev_now - now;	801	diff = rt_now - mn_now;
609		802
610	if (fabs (odiff - diff) < MIN_TIMEJUMP)	803	if (fabs (odiff - diff) < MIN_TIMEJUMP)
611	return; /* all is well */	804	return; /* all is well */
612		805
613	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 */
614	}	813	}
615
616	periodics_reschedule (diff - odiff);
617	/* no timer adjustment, as the monotonic clock doesn't jump */
618	}	814	}
619	else	815	else
		816	#endif
620	{	817	{
621	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))
622	{	821	{
623	periodics_reschedule (ev_now - now);	822	periodics_reschedule (EV_A_ rt_now - mn_now);
624		823
625	/* 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 */
626	for (i = 0; i < timercnt; ++i)	825	for (i = 0; i < timercnt; ++i)
627	timers [i]->at += diff;	826	timers [i]->at += diff;
628	}	827	}
629		828
630	now = ev_now;	829	mn_now = rt_now;
631	}	830	}
632	}	831	}
633		832
634	int ev_loop_done;	833	void
		834	ev_ref (EV_P)
		835	{
		836	++activecnt;
		837	}
635		838
		839	void
		840	ev_unref (EV_P)
		841	{
		842	--activecnt;
		843	}
		844
		845	static int loop_done;
		846
		847	void
636	void ev_loop (int flags)	848	ev_loop (EV_P_ int flags)
637	{	849	{
638	double block;	850	double block;
639	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	851	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
640		852
641	do	853	do
642	{	854	{
643	/* queue check watchers (and execute them) */	855	/* queue check watchers (and execute them) */
644	if (preparecnt)	856	if (expect_false (preparecnt))
645	{	857	{
646	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	858	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
647	call_pending ();	859	call_pending (EV_A);
648	}	860	}
649		861
650	/* update fd-related kernel structures */	862	/* update fd-related kernel structures */
651	fd_reify ();	863	fd_reify (EV_A);
652		864
653	/* calculate blocking time */	865	/* calculate blocking time */
654		866
655	/* 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
656	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	{
657	ev_now = ev_time ();	875	rt_now = ev_time ();
		876	mn_now = rt_now;
		877	}
658		878
659	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	879	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
660	block = 0.;	880	block = 0.;
661	else	881	else
662	{	882	{
663	block = MAX_BLOCKTIME;	883	block = MAX_BLOCKTIME;
664		884
665	if (timercnt)	885	if (timercnt)
666	{	886	{
667	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;
668	if (block > to) block = to;	888	if (block > to) block = to;
669	}	889	}
670		890
671	if (periodiccnt)	891	if (periodiccnt)
672	{	892	{
673	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	893	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
674	if (block > to) block = to;	894	if (block > to) block = to;
675	}	895	}
676		896
677	if (block < 0.) block = 0.;	897	if (block < 0.) block = 0.;
678	}	898	}
679		899
680	method_poll (block);	900	method_poll (EV_A_ block);
681		901
682	/* update ev_now, do magic */	902	/* update rt_now, do magic */
683	time_update ();	903	time_update (EV_A);
684		904
685	/* queue pending timers and reschedule them */	905	/* queue pending timers and reschedule them */
686	timers_reify (); /* relative timers called last */	906	timers_reify (EV_A); /* relative timers called last */
687	periodics_reify (); /* absolute timers called first */	907	periodics_reify (EV_A); /* absolute timers called first */
688		908
689	/* queue idle watchers unless io or timers are pending */	909	/* queue idle watchers unless io or timers are pending */
690	if (!pendingcnt)	910	if (!pendingcnt)
691	queue_events ((W *)idles, idlecnt, EV_IDLE);	911	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
692		912
693	/* queue check watchers, to be executed first */	913	/* queue check watchers, to be executed first */
694	if (checkcnt)	914	if (checkcnt)
695	queue_events ((W *)checks, checkcnt, EV_CHECK);	915	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
696		916
697	call_pending ();	917	call_pending (EV_A);
698	}	918	}
699	while (!ev_loop_done);	919	while (activecnt && !loop_done);
700		920
701	if (ev_loop_done != 2)	921	if (loop_done != 2)
702	ev_loop_done = 0;	922	loop_done = 0;
		923	}
		924
		925	void
		926	ev_unloop (EV_P_ int how)
		927	{
		928	loop_done = how;
703	}	929	}
704		930
705	/*****************************************************************************/	931	/*****************************************************************************/
706		932
707	static void	933	inline void
708	wlist_add (WL *head, WL elem)	934	wlist_add (WL *head, WL elem)
709	{	935	{
710	elem->next = *head;	936	elem->next = *head;
711	*head = elem;	937	*head = elem;
712	}	938	}
713		939
714	static void	940	inline void
715	wlist_del (WL *head, WL elem)	941	wlist_del (WL *head, WL elem)
716	{	942	{
717	while (*head)	943	while (*head)
718	{	944	{
719	if (*head == elem)	945	if (*head == elem)
…		…
724		950
725	head = &(*head)->next;	951	head = &(*head)->next;
726	}	952	}
727	}	953	}
728		954
729	static void	955	inline void
730	ev_clear (W w)	956	ev_clear_pending (EV_P_ W w)
731	{	957	{
732	if (w->pending)	958	if (w->pending)
733	{	959	{
734	pendings [w->pending - 1].w = 0;	960	pendings [ABSPRI (w)][w->pending - 1].w = 0;
735	w->pending = 0;	961	w->pending = 0;
736	}	962	}
737	}	963	}
738		964
739	static void	965	inline void
740	ev_start (W w, int active)	966	ev_start (EV_P_ W w, int active)
741	{	967	{
		968	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		969	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		970
742	w->active = active;	971	w->active = active;
		972	ev_ref (EV_A);
743	}	973	}
744		974
745	static void	975	inline void
746	ev_stop (W w)	976	ev_stop (EV_P_ W w)
747	{	977	{
		978	ev_unref (EV_A);
748	w->active = 0;	979	w->active = 0;
749	}	980	}
750		981
751	/*****************************************************************************/	982	/*****************************************************************************/
752		983
753	void	984	void
754	ev_io_start (struct ev_io *w)	985	ev_io_start (EV_P_ struct ev_io *w)
755	{	986	{
		987	int fd = w->fd;
		988
756	if (ev_is_active (w))	989	if (ev_is_active (w))
757	return;	990	return;
758		991
759	int fd = w->fd;	992	assert (("ev_io_start called with negative fd", fd >= 0));
760		993
761	ev_start ((W)w, 1);	994	ev_start (EV_A_ (W)w, 1);
762	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	995	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
763	wlist_add ((WL *)&anfds[fd].head, (WL)w);	996	wlist_add ((WL *)&anfds[fd].head, (WL)w);
764		997
765	fd_change (fd);	998	fd_change (EV_A_ fd);
766	}	999	}
767		1000
768	void	1001	void
769	ev_io_stop (struct ev_io *w)	1002	ev_io_stop (EV_P_ struct ev_io *w)
770	{	1003	{
771	ev_clear ((W)w);	1004	ev_clear_pending (EV_A_ (W)w);
772	if (!ev_is_active (w))	1005	if (!ev_is_active (w))
773	return;	1006	return;
774		1007
775	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1008	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
776	ev_stop ((W)w);	1009	ev_stop (EV_A_ (W)w);
777		1010
778	fd_change (w->fd);	1011	fd_change (EV_A_ w->fd);
779	}	1012	}
780		1013
781	void	1014	void
782	ev_timer_start (struct ev_timer *w)	1015	ev_timer_start (EV_P_ struct ev_timer *w)
783	{	1016	{
784	if (ev_is_active (w))	1017	if (ev_is_active (w))
785	return;	1018	return;
786		1019
787	w->at += now;	1020	w->at += mn_now;
788		1021
789	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.));
790		1023
791	ev_start ((W)w, ++timercnt);	1024	ev_start (EV_A_ (W)w, ++timercnt);
792	array_needsize (timers, timermax, timercnt, );	1025	array_needsize (timers, timermax, timercnt, );
793	timers [timercnt - 1] = w;	1026	timers [timercnt - 1] = w;
794	upheap ((WT *)timers, timercnt - 1);	1027	upheap ((WT *)timers, timercnt - 1);
795	}	1028	}
796		1029
797	void	1030	void
798	ev_timer_stop (struct ev_timer *w)	1031	ev_timer_stop (EV_P_ struct ev_timer *w)
799	{	1032	{
800	ev_clear ((W)w);	1033	ev_clear_pending (EV_A_ (W)w);
801	if (!ev_is_active (w))	1034	if (!ev_is_active (w))
802	return;	1035	return;
803		1036
804	if (w->active < timercnt--)	1037	if (w->active < timercnt--)
805	{	1038	{
…		…
807	downheap ((WT *)timers, timercnt, w->active - 1);	1040	downheap ((WT *)timers, timercnt, w->active - 1);
808	}	1041	}
809		1042
810	w->at = w->repeat;	1043	w->at = w->repeat;
811		1044
812	ev_stop ((W)w);	1045	ev_stop (EV_A_ (W)w);
813	}	1046	}
814		1047
815	void	1048	void
816	ev_timer_again (struct ev_timer *w)	1049	ev_timer_again (EV_P_ struct ev_timer *w)
817	{	1050	{
818	if (ev_is_active (w))	1051	if (ev_is_active (w))
819	{	1052	{
820	if (w->repeat)	1053	if (w->repeat)
821	{	1054	{
822	w->at = now + w->repeat;	1055	w->at = mn_now + w->repeat;
823	downheap ((WT *)timers, timercnt, w->active - 1);	1056	downheap ((WT *)timers, timercnt, w->active - 1);
824	}	1057	}
825	else	1058	else
826	ev_timer_stop (w);	1059	ev_timer_stop (EV_A_ w);
827	}	1060	}
828	else if (w->repeat)	1061	else if (w->repeat)
829	ev_timer_start (w);	1062	ev_timer_start (EV_A_ w);
830	}	1063	}
831		1064
832	void	1065	void
833	ev_periodic_start (struct ev_periodic *w)	1066	ev_periodic_start (EV_P_ struct ev_periodic *w)
834	{	1067	{
835	if (ev_is_active (w))	1068	if (ev_is_active (w))
836	return;	1069	return;
837		1070
838	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.));
839		1072
840	/* 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 */
841	if (w->interval)	1074	if (w->interval)
842	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1075	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
843		1076
844	ev_start ((W)w, ++periodiccnt);	1077	ev_start (EV_A_ (W)w, ++periodiccnt);
845	array_needsize (periodics, periodicmax, periodiccnt, );	1078	array_needsize (periodics, periodicmax, periodiccnt, );
846	periodics [periodiccnt - 1] = w;	1079	periodics [periodiccnt - 1] = w;
847	upheap ((WT *)periodics, periodiccnt - 1);	1080	upheap ((WT *)periodics, periodiccnt - 1);
848	}	1081	}
849		1082
850	void	1083	void
851	ev_periodic_stop (struct ev_periodic *w)	1084	ev_periodic_stop (EV_P_ struct ev_periodic *w)
852	{	1085	{
853	ev_clear ((W)w);	1086	ev_clear_pending (EV_A_ (W)w);
854	if (!ev_is_active (w))	1087	if (!ev_is_active (w))
855	return;	1088	return;
856		1089
857	if (w->active < periodiccnt--)	1090	if (w->active < periodiccnt--)
858	{	1091	{
859	periodics [w->active - 1] = periodics [periodiccnt];	1092	periodics [w->active - 1] = periodics [periodiccnt];
860	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1093	downheap ((WT *)periodics, periodiccnt, w->active - 1);
861	}	1094	}
862		1095
863	ev_stop ((W)w);	1096	ev_stop (EV_A_ (W)w);
864	}	1097	}
865		1098
		1099	#ifndef SA_RESTART
		1100	# define SA_RESTART 0
		1101	#endif
		1102
866	void	1103	void
867	ev_signal_start (struct ev_signal *w)	1104	ev_signal_start (EV_P_ struct ev_signal *w)
868	{	1105	{
869	if (ev_is_active (w))	1106	if (ev_is_active (w))
870	return;	1107	return;
871		1108
		1109	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1110
872	ev_start ((W)w, 1);	1111	ev_start (EV_A_ (W)w, 1);
873	array_needsize (signals, signalmax, w->signum, signals_init);	1112	array_needsize (signals, signalmax, w->signum, signals_init);
874	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1113	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
875		1114
876	if (!w->next)	1115	if (!w->next)
877	{	1116	{
878	struct sigaction sa;	1117	struct sigaction sa;
879	sa.sa_handler = sighandler;	1118	sa.sa_handler = sighandler;
880	sigfillset (&sa.sa_mask);	1119	sigfillset (&sa.sa_mask);
881	sa.sa_flags = 0;	1120	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
882	sigaction (w->signum, &sa, 0);	1121	sigaction (w->signum, &sa, 0);
883	}	1122	}
884	}	1123	}
885		1124
886	void	1125	void
887	ev_signal_stop (struct ev_signal *w)	1126	ev_signal_stop (EV_P_ struct ev_signal *w)
888	{	1127	{
889	ev_clear ((W)w);	1128	ev_clear_pending (EV_A_ (W)w);
890	if (!ev_is_active (w))	1129	if (!ev_is_active (w))
891	return;	1130	return;
892		1131
893	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1132	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
894	ev_stop ((W)w);	1133	ev_stop (EV_A_ (W)w);
895		1134
896	if (!signals [w->signum - 1].head)	1135	if (!signals [w->signum - 1].head)
897	signal (w->signum, SIG_DFL);	1136	signal (w->signum, SIG_DFL);
898	}	1137	}
899		1138
900	void	1139	void
901	ev_idle_start (struct ev_idle *w)	1140	ev_idle_start (EV_P_ struct ev_idle *w)
902	{	1141	{
903	if (ev_is_active (w))	1142	if (ev_is_active (w))
904	return;	1143	return;
905		1144
906	ev_start ((W)w, ++idlecnt);	1145	ev_start (EV_A_ (W)w, ++idlecnt);
907	array_needsize (idles, idlemax, idlecnt, );	1146	array_needsize (idles, idlemax, idlecnt, );
908	idles [idlecnt - 1] = w;	1147	idles [idlecnt - 1] = w;
909	}	1148	}
910		1149
911	void	1150	void
912	ev_idle_stop (struct ev_idle *w)	1151	ev_idle_stop (EV_P_ struct ev_idle *w)
913	{	1152	{
914	ev_clear ((W)w);	1153	ev_clear_pending (EV_A_ (W)w);
915	if (ev_is_active (w))	1154	if (ev_is_active (w))
916	return;	1155	return;
917		1156
918	idles [w->active - 1] = idles [--idlecnt];	1157	idles [w->active - 1] = idles [--idlecnt];
919	ev_stop ((W)w);	1158	ev_stop (EV_A_ (W)w);
920	}	1159	}
921		1160
922	void	1161	void
923	ev_prepare_start (struct ev_prepare *w)	1162	ev_prepare_start (EV_P_ struct ev_prepare *w)
924	{	1163	{
925	if (ev_is_active (w))	1164	if (ev_is_active (w))
926	return;	1165	return;
927		1166
928	ev_start ((W)w, ++preparecnt);	1167	ev_start (EV_A_ (W)w, ++preparecnt);
929	array_needsize (prepares, preparemax, preparecnt, );	1168	array_needsize (prepares, preparemax, preparecnt, );
930	prepares [preparecnt - 1] = w;	1169	prepares [preparecnt - 1] = w;
931	}	1170	}
932		1171
933	void	1172	void
934	ev_prepare_stop (struct ev_prepare *w)	1173	ev_prepare_stop (EV_P_ struct ev_prepare *w)
935	{	1174	{
936	ev_clear ((W)w);	1175	ev_clear_pending (EV_A_ (W)w);
937	if (ev_is_active (w))	1176	if (ev_is_active (w))
938	return;	1177	return;
939		1178
940	prepares [w->active - 1] = prepares [--preparecnt];	1179	prepares [w->active - 1] = prepares [--preparecnt];
941	ev_stop ((W)w);	1180	ev_stop (EV_A_ (W)w);
942	}	1181	}
943		1182
944	void	1183	void
945	ev_check_start (struct ev_check *w)	1184	ev_check_start (EV_P_ struct ev_check *w)
946	{	1185	{
947	if (ev_is_active (w))	1186	if (ev_is_active (w))
948	return;	1187	return;
949		1188
950	ev_start ((W)w, ++checkcnt);	1189	ev_start (EV_A_ (W)w, ++checkcnt);
951	array_needsize (checks, checkmax, checkcnt, );	1190	array_needsize (checks, checkmax, checkcnt, );
952	checks [checkcnt - 1] = w;	1191	checks [checkcnt - 1] = w;
953	}	1192	}
954		1193
955	void	1194	void
956	ev_check_stop (struct ev_check *w)	1195	ev_check_stop (EV_P_ struct ev_check *w)
957	{	1196	{
958	ev_clear ((W)w);	1197	ev_clear_pending (EV_A_ (W)w);
959	if (ev_is_active (w))	1198	if (ev_is_active (w))
960	return;	1199	return;
961		1200
962	checks [w->active - 1] = checks [--checkcnt];	1201	checks [w->active - 1] = checks [--checkcnt];
963	ev_stop ((W)w);	1202	ev_stop (EV_A_ (W)w);
964	}	1203	}
965		1204
966	void	1205	void
967	ev_child_start (struct ev_child *w)	1206	ev_child_start (EV_P_ struct ev_child *w)
968	{	1207	{
969	if (ev_is_active (w))	1208	if (ev_is_active (w))
970	return;	1209	return;
971		1210
972	ev_start ((W)w, 1);	1211	ev_start (EV_A_ (W)w, 1);
973	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1212	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
974	}	1213	}
975		1214
976	void	1215	void
977	ev_child_stop (struct ev_child *w)	1216	ev_child_stop (EV_P_ struct ev_child *w)
978	{	1217	{
979	ev_clear ((W)w);	1218	ev_clear_pending (EV_A_ (W)w);
980	if (ev_is_active (w))	1219	if (ev_is_active (w))
981	return;	1220	return;
982		1221
983	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1222	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
984	ev_stop ((W)w);	1223	ev_stop (EV_A_ (W)w);
985	}	1224	}
986		1225
987	/*****************************************************************************/	1226	/*****************************************************************************/
988		1227
989	struct ev_once	1228	struct ev_once
…		…
993	void (cb)(int revents, void arg);	1232	void (cb)(int revents, void arg);
994	void *arg;	1233	void *arg;
995	};	1234	};
996		1235
997	static void	1236	static void
998	once_cb (struct ev_once *once, int revents)	1237	once_cb (EV_P_ struct ev_once *once, int revents)
999	{	1238	{
1000	void (cb)(int revents, void arg) = once->cb;	1239	void (cb)(int revents, void arg) = once->cb;
1001	void *arg = once->arg;	1240	void *arg = once->arg;
1002		1241
1003	ev_io_stop (&once->io);	1242	ev_io_stop (EV_A_ &once->io);
1004	ev_timer_stop (&once->to);	1243	ev_timer_stop (EV_A_ &once->to);
1005	free (once);	1244	free (once);
1006		1245
1007	cb (revents, arg);	1246	cb (revents, arg);
1008	}	1247	}
1009		1248
1010	static void	1249	static void
1011	once_cb_io (struct ev_io *w, int revents)	1250	once_cb_io (EV_P_ struct ev_io *w, int revents)
1012	{	1251	{
1013	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);
1014	}	1253	}
1015		1254
1016	static void	1255	static void
1017	once_cb_to (struct ev_timer *w, int revents)	1256	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1018	{	1257	{
1019	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);
1020	}	1259	}
1021		1260
1022	void	1261	void
1023	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)
1024	{	1263	{
1025	struct ev_once *once = malloc (sizeof (struct ev_once));	1264	struct ev_once *once = malloc (sizeof (struct ev_once));
1026		1265
1027	if (!once)	1266	if (!once)
1028	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1267	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
…		…
1033		1272
1034	ev_watcher_init (&once->io, once_cb_io);	1273	ev_watcher_init (&once->io, once_cb_io);
1035	if (fd >= 0)	1274	if (fd >= 0)
1036	{	1275	{
1037	ev_io_set (&once->io, fd, events);	1276	ev_io_set (&once->io, fd, events);
1038	ev_io_start (&once->io);	1277	ev_io_start (EV_A_ &once->io);
1039	}	1278	}
1040		1279
1041	ev_watcher_init (&once->to, once_cb_to);	1280	ev_watcher_init (&once->to, once_cb_to);
1042	if (timeout >= 0.)	1281	if (timeout >= 0.)
1043	{	1282	{
1044	ev_timer_set (&once->to, timeout, 0.);	1283	ev_timer_set (&once->to, timeout, 0.);
1045	ev_timer_start (&once->to);	1284	ev_timer_start (EV_A_ &once->to);
1046	}	1285	}
1047	}	1286	}
1048	}	1287	}
1049		1288
1050	/*****************************************************************************/	1289	/*****************************************************************************/

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing libev/ev.c (file contents): Revision 1.31 by root, Thu Nov 1 09:05:33 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 1.31 by root, Thu Nov 1 09:05:33 2007 UTC vs.
Revision 1.52 by root, Sat Nov 3 22:10:39 2007 UTC