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

Comparing libev/ev.c (file contents):
Revision 1.28 by root, Thu Nov 1 06:48:49 2007 UTC vs.
Revision 1.51 by root, Sat Nov 3 21:58:51 2007 UTC

…		…
1	/*	1	/*
		2	* libev event processing core, watcher management
		3	*
2	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
3	* All rights reserved.	5	* All rights reserved.
4	*	6	*
5	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions are	8	* modification, are permitted provided that the following conditions are
24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28	*/	30	*/
		31	#ifndef EV_STANDALONE
		32	# include "config.h"
		33	#endif
29		34
30	#include <math.h>	35	#include <math.h>
31	#include <stdlib.h>	36	#include <stdlib.h>
32	#include <unistd.h>	37	#include <unistd.h>
33	#include <fcntl.h>	38	#include <fcntl.h>
…		…
37	#include <stdio.h>	42	#include <stdio.h>
38		43
39	#include <assert.h>	44	#include <assert.h>
40	#include <errno.h>	45	#include <errno.h>
41	#include <sys/types.h>	46	#include <sys/types.h>
		47	#ifndef WIN32
42	#include <sys/wait.h>	48	# include <sys/wait.h>
		49	#endif
43	#include <sys/time.h>	50	#include <sys/time.h>
44	#include <time.h>	51	#include <time.h>
45		52
		53	/**/
		54
46	#ifndef HAVE_MONOTONIC	55	#ifndef EV_USE_MONOTONIC
		56	# define EV_USE_MONOTONIC 1
		57	#endif
		58
		59	#ifndef EV_USE_SELECT
		60	# define EV_USE_SELECT 1
		61	#endif
		62
		63	#ifndef EV_USEV_POLL
		64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */
		65	#endif
		66
		67	#ifndef EV_USE_EPOLL
		68	# define EV_USE_EPOLL 0
		69	#endif
		70
		71	#ifndef EV_USE_KQUEUE
		72	# define EV_USE_KQUEUE 0
		73	#endif
		74
		75	#ifndef EV_USE_REALTIME
		76	# define EV_USE_REALTIME 1
		77	#endif
		78
		79	/**/
		80
47	# ifdef CLOCK_MONOTONIC	81	#ifndef CLOCK_MONOTONIC
		82	# undef EV_USE_MONOTONIC
48	# define HAVE_MONOTONIC 1	83	# define EV_USE_MONOTONIC 0
49	# endif	84	#endif
50	#endif
51		85
52	#ifndef HAVE_SELECT
53	# define HAVE_SELECT 1
54	#endif
55
56	#ifndef HAVE_EPOLL
57	# define HAVE_EPOLL 0
58	#endif
59
60	#ifndef HAVE_REALTIME	86	#ifndef CLOCK_REALTIME
61	# define HAVE_REALTIME 1 /* posix requirement, but might be slower */	87	# undef EV_USE_REALTIME
		88	# define EV_USE_REALTIME 0
62	#endif	89	#endif
		90
		91	/**/
63		92
64	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
65	#define MAX_BLOCKTIME 60.	94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
66	#define PID_HASHSIZE 16 /* size of pid hahs table, must be power of two */	95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
		96	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
67		97
68	#include "ev.h"	98	#include "ev.h"
		99
		100	#if __GNUC__ >= 3
		101	# define expect(expr,value) __builtin_expect ((expr),(value))
		102	# define inline inline
		103	#else
		104	# define expect(expr,value) (expr)
		105	# define inline static
		106	#endif
		107
		108	#define expect_false(expr) expect ((expr) != 0, 0)
		109	#define expect_true(expr) expect ((expr) != 0, 1)
		110
		111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
69		113
70	typedef struct ev_watcher *W;	114	typedef struct ev_watcher *W;
71	typedef struct ev_watcher_list *WL;	115	typedef struct ev_watcher_list *WL;
72	typedef struct ev_watcher_time *WT;	116	typedef struct ev_watcher_time *WT;
73		117
74	static ev_tstamp now, diff; /* monotonic clock */	118	static ev_tstamp now_floor, mn_now, diff; /* monotonic clock */
75	ev_tstamp ev_now;	119	static ev_tstamp rt_now;
76	int ev_method;	120	static int method;
77		121
78	static int have_monotonic; /* runtime */	122	static int have_monotonic; /* runtime */
79		123
80	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
81	static void (*method_modify)(int fd, int oev, int nev);	125	static void (*method_modify)(EV_P_ int fd, int oev, int nev);
82	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
83		156
84	/*****************************************************************************/	157	/*****************************************************************************/
85		158
86	ev_tstamp	159	inline ev_tstamp
87	ev_time (void)	160	ev_time (void)
88	{	161	{
89	#if HAVE_REALTIME	162	#if EV_USE_REALTIME
90	struct timespec ts;	163	struct timespec ts;
91	clock_gettime (CLOCK_REALTIME, &ts);	164	clock_gettime (CLOCK_REALTIME, &ts);
92	return ts.tv_sec + ts.tv_nsec * 1e-9;	165	return ts.tv_sec + ts.tv_nsec * 1e-9;
93	#else	166	#else
94	struct timeval tv;	167	struct timeval tv;
95	gettimeofday (&tv, 0);	168	gettimeofday (&tv, 0);
96	return tv.tv_sec + tv.tv_usec * 1e-6;	169	return tv.tv_sec + tv.tv_usec * 1e-6;
97	#endif	170	#endif
98	}	171	}
99		172
100	static ev_tstamp	173	inline ev_tstamp
101	get_clock (void)	174	get_clock (void)
102	{	175	{
103	#if HAVE_MONOTONIC	176	#if EV_USE_MONOTONIC
104	if (have_monotonic)	177	if (expect_true (have_monotonic))
105	{	178	{
106	struct timespec ts;	179	struct timespec ts;
107	clock_gettime (CLOCK_MONOTONIC, &ts);	180	clock_gettime (CLOCK_MONOTONIC, &ts);
108	return ts.tv_sec + ts.tv_nsec * 1e-9;	181	return ts.tv_sec + ts.tv_nsec * 1e-9;
109	}	182	}
110	#endif	183	#endif
111		184
112	return ev_time ();	185	return ev_time ();
113	}	186	}
114		187
		188	ev_tstamp
		189	ev_now (EV_P)
		190	{
		191	return rt_now;
		192	}
		193
		194	#define array_roundsize(base,n) ((n) \| 4 & ~3)
		195
115	#define array_needsize(base,cur,cnt,init) \	196	#define array_needsize(base,cur,cnt,init) \
116	if ((cnt) > cur) \	197	if (expect_false ((cnt) > cur)) \
117	{ \	198	{ \
118	int newcnt = cur; \	199	int newcnt = cur; \
119	do \	200	do \
120	{ \	201	{ \
121	newcnt = (newcnt << 1) \| 4 & ~3; \	202	newcnt = array_roundsize (base, newcnt << 1); \
122	} \	203	} \
123	while ((cnt) > newcnt); \	204	while ((cnt) > newcnt); \
124	\	205	\
125	base = realloc (base, sizeof (base) (newcnt)); \	206	base = realloc (base, sizeof (base) (newcnt)); \
126	init (base + cur, newcnt - cur); \	207	init (base + cur, newcnt - cur); \
…		…
129		210
130	/*****************************************************************************/	211	/*****************************************************************************/
131		212
132	typedef struct	213	typedef struct
133	{	214	{
134	struct ev_io *head;	215	struct ev_watcher_list *head;
135	int events;	216	unsigned char events;
		217	unsigned char reify;
136	} ANFD;	218	} ANFD;
137		219
138	static ANFD *anfds;	220	static ANFD *anfds;
139	static int anfdmax;	221	static int anfdmax;
140		222
…		…
143	{	225	{
144	while (count--)	226	while (count--)
145	{	227	{
146	base->head = 0;	228	base->head = 0;
147	base->events = EV_NONE;	229	base->events = EV_NONE;
		230	base->reify = 0;
		231
148	++base;	232	++base;
149	}	233	}
150	}	234	}
151		235
152	typedef struct	236	typedef struct
153	{	237	{
154	W w;	238	W w;
155	int events;	239	int events;
156	} ANPENDING;	240	} ANPENDING;
157		241
158	static ANPENDING *pendings;	242	static ANPENDING *pendings [NUMPRI];
159	static int pendingmax, pendingcnt;	243	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
160		244
161	static void	245	static void
162	event (W w, int events)	246	event (EV_P_ W w, int events)
163	{	247	{
164	if (w->active)	248	if (w->pending)
165	{	249	{
166	w->pending = ++pendingcnt;
167	array_needsize (pendings, pendingmax, pendingcnt, );
168	pendings [pendingcnt - 1].w = w;
169	pendings [pendingcnt - 1].events = events;	250	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
		251	return;
170	}	252	}
171	}
172		253
		254	w->pending = ++pendingcnt [ABSPRI (w)];
		255	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
		256	pendings [ABSPRI (w)][w->pending - 1].w = w;
		257	pendings [ABSPRI (w)][w->pending - 1].events = events;
		258	}
		259
173	static void	260	static void
174	queue_events (W *events, int eventcnt, int type)	261	queue_events (EV_P_ W *events, int eventcnt, int type)
175	{	262	{
176	int i;	263	int i;
177		264
178	for (i = 0; i < eventcnt; ++i)	265	for (i = 0; i < eventcnt; ++i)
179	event (events [i], type);	266	event (EV_A_ events [i], type);
180	}	267	}
181		268
182	static void	269	static void
183	fd_event (int fd, int events)	270	fd_event (EV_P_ int fd, int events)
184	{	271	{
185	ANFD *anfd = anfds + fd;	272	ANFD *anfd = anfds + fd;
186	struct ev_io *w;	273	struct ev_io *w;
187		274
188	for (w = anfd->head; w; w = w->next)	275	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
189	{	276	{
190	int ev = w->events & events;	277	int ev = w->events & events;
191		278
192	if (ev)	279	if (ev)
193	event ((W)w, ev);	280	event (EV_A_ (W)w, ev);
194	}	281	}
195	}	282	}
196		283
197	/*****************************************************************************/	284	/*****************************************************************************/
198		285
199	static int *fdchanges;	286	static int *fdchanges;
200	static int fdchangemax, fdchangecnt;	287	static int fdchangemax, fdchangecnt;
201		288
202	static void	289	static void
203	fd_reify (void)	290	fd_reify (EV_P)
204	{	291	{
205	int i;	292	int i;
206		293
207	for (i = 0; i < fdchangecnt; ++i)	294	for (i = 0; i < fdchangecnt; ++i)
208	{	295	{
…		…
210	ANFD *anfd = anfds + fd;	297	ANFD *anfd = anfds + fd;
211	struct ev_io *w;	298	struct ev_io *w;
212		299
213	int events = 0;	300	int events = 0;
214		301
215	for (w = anfd->head; w; w = w->next)	302	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
216	events \|= w->events;	303	events \|= w->events;
217		304
218	anfd->events &= ~EV_REIFY;	305	anfd->reify = 0;
219		306
220	if (anfd->events != events)	307	if (anfd->events != events)
221	{	308	{
222	method_modify (fd, anfd->events, events);	309	method_modify (EV_A_ fd, anfd->events, events);
223	anfd->events = events;	310	anfd->events = events;
224	}	311	}
225	}	312	}
226		313
227	fdchangecnt = 0;	314	fdchangecnt = 0;
228	}	315	}
229		316
230	static void	317	static void
231	fd_change (int fd)	318	fd_change (EV_P_ int fd)
232	{	319	{
233	if (anfds [fd].events & EV_REIFY)	320	if (anfds [fd].reify \|\| fdchangecnt < 0)
234	return;	321	return;
235		322
236	anfds [fd].events \|= EV_REIFY;	323	anfds [fd].reify = 1;
237		324
238	++fdchangecnt;	325	++fdchangecnt;
239	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	326	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
240	fdchanges [fdchangecnt - 1] = fd;	327	fdchanges [fdchangecnt - 1] = fd;
241	}	328	}
242		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
243	/* called on EBADF to verify fds */	342	/* called on EBADF to verify fds */
244	static void	343	static void
245	fd_recheck (void)	344	fd_ebadf (EV_P)
246	{	345	{
247	int fd;	346	int fd;
248		347
249	for (fd = 0; fd < anfdmax; ++fd)	348	for (fd = 0; fd < anfdmax; ++fd)
250	if (anfds [fd].events)	349	if (anfds [fd].events)
251	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	350	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
252	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)
253	{	362	{
254	event ((W)anfds [fd].head, EV_ERROR);	363	close (fd);
255	ev_io_stop (anfds [fd].head);	364	fd_kill (EV_A_ fd);
		365	return;
256	}	366	}
257	}	367	}
258		368
259	/*****************************************************************************/	369	/*****************************************************************************/
260		370
261	static struct ev_timer **timers;	371	static struct ev_timer **timers;
…		…
307		417
308	/*****************************************************************************/	418	/*****************************************************************************/
309		419
310	typedef struct	420	typedef struct
311	{	421	{
312	struct ev_signal *head;	422	struct ev_watcher_list *head;
313	sig_atomic_t gotsig;	423	sig_atomic_t volatile gotsig;
314	} ANSIG;	424	} ANSIG;
315		425
316	static ANSIG *signals;	426	static ANSIG *signals;
317	static int signalmax;	427	static int signalmax;
318		428
319	static int sigpipe [2];	429	static int sigpipe [2];
320	static sig_atomic_t gotsig;	430	static sig_atomic_t volatile gotsig;
321	static struct ev_io sigev;	431	static struct ev_io sigev;
322		432
323	static void	433	static void
324	signals_init (ANSIG *base, int count)	434	signals_init (ANSIG *base, int count)
325	{	435	{
326	while (count--)	436	while (count--)
327	{	437	{
328	base->head = 0;	438	base->head = 0;
329	base->gotsig = 0;	439	base->gotsig = 0;
		440
330	++base;	441	++base;
331	}	442	}
332	}	443	}
333		444
334	static void	445	static void
…		…
336	{	447	{
337	signals [signum - 1].gotsig = 1;	448	signals [signum - 1].gotsig = 1;
338		449
339	if (!gotsig)	450	if (!gotsig)
340	{	451	{
		452	int old_errno = errno;
341	gotsig = 1;	453	gotsig = 1;
342	write (sigpipe [1], &gotsig, 1);	454	write (sigpipe [1], &signum, 1);
		455	errno = old_errno;
343	}	456	}
344	}	457	}
345		458
346	static void	459	static void
347	sigcb (struct ev_io *iow, int revents)	460	sigcb (EV_P_ struct ev_io *iow, int revents)
348	{	461	{
349	struct ev_signal *w;	462	struct ev_watcher_list *w;
350	int sig;	463	int signum;
351		464
		465	read (sigpipe [0], &revents, 1);
352	gotsig = 0;	466	gotsig = 0;
353	read (sigpipe [0], &revents, 1);
354		467
355	for (sig = signalmax; sig--; )	468	for (signum = signalmax; signum--; )
356	if (signals [sig].gotsig)	469	if (signals [signum].gotsig)
357	{	470	{
358	signals [sig].gotsig = 0;	471	signals [signum].gotsig = 0;
359		472
360	for (w = signals [sig].head; w; w = w->next)	473	for (w = signals [signum].head; w; w = w->next)
361	event ((W)w, EV_SIGNAL);	474	event (EV_A_ (W)w, EV_SIGNAL);
362	}	475	}
363	}	476	}
364		477
365	static void	478	static void
366	siginit (void)	479	siginit (EV_P)
367	{	480	{
		481	#ifndef WIN32
368	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	482	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
369	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	483	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
370		484
371	/* rather than sort out wether we really need nb, set it */	485	/* rather than sort out wether we really need nb, set it */
372	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	486	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
373	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	487	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		488	#endif
374		489
375	ev_io_set (&sigev, sigpipe [0], EV_READ);	490	ev_io_set (&sigev, sigpipe [0], EV_READ);
376	ev_io_start (&sigev);	491	ev_io_start (&sigev);
377	}	492	}
378		493
…		…
390	/*****************************************************************************/	505	/*****************************************************************************/
391		506
392	static struct ev_child *childs [PID_HASHSIZE];	507	static struct ev_child *childs [PID_HASHSIZE];
393	static struct ev_signal childev;	508	static struct ev_signal childev;
394		509
		510	#ifndef WIN32
		511
395	#ifndef WCONTINUED	512	#ifndef WCONTINUED
396	# define WCONTINUED 0	513	# define WCONTINUED 0
397	#endif	514	#endif
398		515
399	static void	516	static void
400	childcb (struct ev_signal *sw, int revents)	517	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
401	{	518	{
402	struct ev_child *w;	519	struct ev_child *w;
		520
		521	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		522	if (w->pid == pid \|\| !w->pid)
		523	{
		524	w->priority = sw->priority; /* need to do it now */
		525	w->rpid = pid;
		526	w->rstatus = status;
		527	event (EV_A_ (W)w, EV_CHILD);
		528	}
		529	}
		530
		531	static void
		532	childcb (EV_P_ struct ev_signal *sw, int revents)
		533	{
403	int pid, status;	534	int pid, status;
404		535
405	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	536	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
406	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	537	{
407	if (w->pid == pid \|\| w->pid == -1)	538	/* make sure we are called again until all childs have been reaped */
408	{	539	event (EV_A_ (W)sw, EV_SIGNAL);
409	w->status = status;	540
410	event ((W)w, EV_CHILD);	541	child_reap (EV_A_ sw, pid, pid, status);
411	}	542	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		543	}
412	}	544	}
		545
		546	#endif
413		547
414	/*****************************************************************************/	548	/*****************************************************************************/
415		549
		550	#if EV_USE_KQUEUE
		551	# include "ev_kqueue.c"
		552	#endif
416	#if HAVE_EPOLL	553	#if EV_USE_EPOLL
417	# include "ev_epoll.c"	554	# include "ev_epoll.c"
418	#endif	555	#endif
		556	#if EV_USEV_POLL
		557	# include "ev_poll.c"
		558	#endif
419	#if HAVE_SELECT	559	#if EV_USE_SELECT
420	# include "ev_select.c"	560	# include "ev_select.c"
421	#endif	561	#endif
422		562
423	int	563	int
424	ev_version_major (void)	564	ev_version_major (void)
…		…
430	ev_version_minor (void)	570	ev_version_minor (void)
431	{	571	{
432	return EV_VERSION_MINOR;	572	return EV_VERSION_MINOR;
433	}	573	}
434		574
435	int ev_init (int flags)	575	/* return true if we are running with elevated privileges and should ignore env variables */
		576	static int
		577	enable_secure (void)
436	{	578	{
		579	#ifdef WIN32
		580	return 0;
		581	#else
		582	return getuid () != geteuid ()
		583	\|\| getgid () != getegid ();
		584	#endif
		585	}
		586
		587	int
		588	ev_method (EV_P)
		589	{
		590	return method;
		591	}
		592
		593	int
		594	ev_init (EV_P_ int methods)
		595	{
437	if (!ev_method)	596	if (!method)
438	{	597	{
439	#if HAVE_MONOTONIC	598	#if EV_USE_MONOTONIC
440	{	599	{
441	struct timespec ts;	600	struct timespec ts;
442	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	601	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
443	have_monotonic = 1;	602	have_monotonic = 1;
444	}	603	}
445	#endif	604	#endif
446		605
447	ev_now = ev_time ();	606	rt_now = ev_time ();
448	now = get_clock ();	607	mn_now = get_clock ();
		608	now_floor = mn_now;
449	diff = ev_now - now;	609	diff = rt_now - mn_now;
450		610
451	if (pipe (sigpipe))	611	if (pipe (sigpipe))
452	return 0;	612	return 0;
453		613
		614	if (methods == EVMETHOD_AUTO)
		615	if (!enable_secure () && getenv ("LIBmethodS"))
		616	methods = atoi (getenv ("LIBmethodS"));
		617	else
454	ev_method = EVMETHOD_NONE;	618	methods = EVMETHOD_ANY;
		619
		620	method = 0;
		621	#if EV_USE_KQUEUE
		622	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		623	#endif
455	#if HAVE_EPOLL	624	#if EV_USE_EPOLL
456	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	625	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
457	#endif	626	#endif
		627	#if EV_USEV_POLL
		628	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
		629	#endif
458	#if HAVE_SELECT	630	#if EV_USE_SELECT
459	if (ev_method == EVMETHOD_NONE) select_init (flags);	631	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
460	#endif	632	#endif
461		633
462	if (ev_method)	634	if (method)
463	{	635	{
464	ev_watcher_init (&sigev, sigcb);	636	ev_watcher_init (&sigev, sigcb);
		637	ev_set_priority (&sigev, EV_MAXPRI);
465	siginit ();	638	siginit (EV_A);
466		639
		640	#ifndef WIN32
467	ev_signal_init (&childev, childcb, SIGCHLD);	641	ev_signal_init (&childev, childcb, SIGCHLD);
		642	ev_set_priority (&childev, EV_MAXPRI);
468	ev_signal_start (&childev);	643	ev_signal_start (EV_A_ &childev);
		644	#endif
469	}	645	}
470	}	646	}
471		647
472	return ev_method;	648	return method;
473	}	649	}
474		650
475	/*****************************************************************************/	651	/*****************************************************************************/
476		652
477	void	653	void
478	ev_prefork (void)	654	ev_fork_prepare (void)
479	{	655	{
480	/* nop */	656	/* nop */
481	}	657	}
482		658
483	void	659	void
484	ev_postfork_parent (void)	660	ev_fork_parent (void)
485	{	661	{
486	/* nop */	662	/* nop */
487	}	663	}
488		664
489	void	665	void
490	ev_postfork_child (void)	666	ev_fork_child (void)
491	{	667	{
492	#if HAVE_EPOLL	668	#if EV_USE_EPOLL
493	if (ev_method == EVMETHOD_EPOLL)	669	if (method == EVMETHOD_EPOLL)
494	epoll_postfork_child ();	670	epoll_postfork_child ();
495	#endif	671	#endif
496		672
497	ev_io_stop (&sigev);	673	ev_io_stop (&sigev);
498	close (sigpipe [0]);	674	close (sigpipe [0]);
…		…
502	}	678	}
503		679
504	/*****************************************************************************/	680	/*****************************************************************************/
505		681
506	static void	682	static void
507	call_pending (void)	683	call_pending (EV_P)
508	{	684	{
		685	int pri;
		686
		687	for (pri = NUMPRI; pri--; )
509	while (pendingcnt)	688	while (pendingcnt [pri])
510	{	689	{
511	ANPENDING *p = pendings + --pendingcnt;	690	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
512		691
513	if (p->w)	692	if (p->w)
514	{	693	{
515	p->w->pending = 0;	694	p->w->pending = 0;
516	p->w->cb (p->w, p->events);	695	p->w->cb (EV_A_ p->w, p->events);
517	}	696	}
518	}	697	}
519	}	698	}
520		699
521	static void	700	static void
522	timers_reify (void)	701	timers_reify (EV_P)
523	{	702	{
524	while (timercnt && timers [0]->at <= now)	703	while (timercnt && timers [0]->at <= mn_now)
525	{	704	{
526	struct ev_timer *w = timers [0];	705	struct ev_timer *w = timers [0];
527
528	event ((W)w, EV_TIMEOUT);
529		706
530	/* first reschedule or stop timer */	707	/* first reschedule or stop timer */
531	if (w->repeat)	708	if (w->repeat)
532	{	709	{
		710	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
533	w->at = now + w->repeat;	711	w->at = mn_now + w->repeat;
534	assert (("timer timeout in the past, negative repeat?", w->at > now));
535	downheap ((WT *)timers, timercnt, 0);	712	downheap ((WT *)timers, timercnt, 0);
536	}	713	}
537	else	714	else
538	ev_timer_stop (w); /* nonrepeating: stop timer */	715	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
539	}
540	}
541		716
		717	event ((W)w, EV_TIMEOUT);
		718	}
		719	}
		720
542	static void	721	static void
543	periodics_reify (void)	722	periodics_reify (EV_P)
544	{	723	{
545	while (periodiccnt && periodics [0]->at <= ev_now)	724	while (periodiccnt && periodics [0]->at <= rt_now)
546	{	725	{
547	struct ev_periodic *w = periodics [0];	726	struct ev_periodic *w = periodics [0];
548		727
549	/* first reschedule or stop timer */	728	/* first reschedule or stop timer */
550	if (w->interval)	729	if (w->interval)
551	{	730	{
552	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	731	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;
553	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	732	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
554	downheap ((WT *)periodics, periodiccnt, 0);	733	downheap ((WT *)periodics, periodiccnt, 0);
555	}	734	}
556	else	735	else
557	ev_periodic_stop (w); /* nonrepeating: stop timer */	736	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
558		737
559	event ((W)w, EV_TIMEOUT);	738	event (EV_A_ (W)w, EV_PERIODIC);
560	}	739	}
561	}	740	}
562		741
563	static void	742	static void
564	periodics_reschedule (ev_tstamp diff)	743	periodics_reschedule (EV_P_ ev_tstamp diff)
565	{	744	{
566	int i;	745	int i;
567		746
568	/* adjust periodics after time jump */	747	/* adjust periodics after time jump */
569	for (i = 0; i < periodiccnt; ++i)	748	for (i = 0; i < periodiccnt; ++i)
570	{	749	{
571	struct ev_periodic *w = periodics [i];	750	struct ev_periodic *w = periodics [i];
572		751
573	if (w->interval)	752	if (w->interval)
574	{	753	{
575	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	754	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
576		755
577	if (fabs (diff) >= 1e-4)	756	if (fabs (diff) >= 1e-4)
578	{	757	{
579	ev_periodic_stop (w);	758	ev_periodic_stop (EV_A_ w);
580	ev_periodic_start (w);	759	ev_periodic_start (EV_A_ w);
581		760
582	i = 0; /* restart loop, inefficient, but time jumps should be rare */	761	i = 0; /* restart loop, inefficient, but time jumps should be rare */
583	}	762	}
584	}	763	}
585	}	764	}
586	}	765	}
587		766
		767	inline int
		768	time_update_monotonic (EV_P)
		769	{
		770	mn_now = get_clock ();
		771
		772	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		773	{
		774	rt_now = mn_now + diff;
		775	return 0;
		776	}
		777	else
		778	{
		779	now_floor = mn_now;
		780	rt_now = ev_time ();
		781	return 1;
		782	}
		783	}
		784
588	static void	785	static void
589	time_update (void)	786	time_update (EV_P)
590	{	787	{
591	int i;	788	int i;
592		789
593	ev_now = ev_time ();	790	#if EV_USE_MONOTONIC
594
595	if (have_monotonic)	791	if (expect_true (have_monotonic))
596	{	792	{
597	ev_tstamp odiff = diff;	793	if (time_update_monotonic (EV_A))
598
599	for (i = 4; --i; ) /* loop a few times, before making important decisions */
600	{	794	{
601	now = get_clock ();	795	ev_tstamp odiff = diff;
		796
		797	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		798	{
602	diff = ev_now - now;	799	diff = rt_now - mn_now;
603		800
604	if (fabs (odiff - diff) < MIN_TIMEJUMP)	801	if (fabs (odiff - diff) < MIN_TIMEJUMP)
605	return; /* all is well */	802	return; /* all is well */
606		803
607	ev_now = ev_time ();	804	rt_now = ev_time ();
		805	mn_now = get_clock ();
		806	now_floor = mn_now;
		807	}
		808
		809	periodics_reschedule (EV_A_ diff - odiff);
		810	/* no timer adjustment, as the monotonic clock doesn't jump */
608	}	811	}
609
610	periodics_reschedule (diff - odiff);
611	/* no timer adjustment, as the monotonic clock doesn't jump */
612	}	812	}
613	else	813	else
		814	#endif
614	{	815	{
615	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)	816	rt_now = ev_time ();
		817
		818	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
616	{	819	{
617	periodics_reschedule (ev_now - now);	820	periodics_reschedule (EV_A_ rt_now - mn_now);
618		821
619	/* adjust timers. this is easy, as the offset is the same for all */	822	/* adjust timers. this is easy, as the offset is the same for all */
620	for (i = 0; i < timercnt; ++i)	823	for (i = 0; i < timercnt; ++i)
621	timers [i]->at += diff;	824	timers [i]->at += diff;
622	}	825	}
623		826
624	now = ev_now;	827	mn_now = rt_now;
625	}	828	}
626	}	829	}
627		830
628	int ev_loop_done;	831	void
		832	ev_ref (EV_P)
		833	{
		834	++activecnt;
		835	}
629		836
		837	void
		838	ev_unref (EV_P)
		839	{
		840	--activecnt;
		841	}
		842
		843	static int loop_done;
		844
		845	void
630	void ev_loop (int flags)	846	ev_loop (EV_P_ int flags)
631	{	847	{
632	double block;	848	double block;
633	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	849	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
634		850
635	do	851	do
636	{	852	{
637	/* queue check watchers (and execute them) */	853	/* queue check watchers (and execute them) */
638	if (preparecnt)	854	if (expect_false (preparecnt))
639	{	855	{
640	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	856	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
641	call_pending ();	857	call_pending (EV_A);
642	}	858	}
643		859
644	/* update fd-related kernel structures */	860	/* update fd-related kernel structures */
645	fd_reify ();	861	fd_reify (EV_A);
646		862
647	/* calculate blocking time */	863	/* calculate blocking time */
648		864
649	/* we only need this for !monotonic clockor timers, but as we basically	865	/* we only need this for !monotonic clockor timers, but as we basically
650	always have timers, we just calculate it always */	866	always have timers, we just calculate it always */
		867	#if EV_USE_MONOTONIC
		868	if (expect_true (have_monotonic))
		869	time_update_monotonic (EV_A);
		870	else
		871	#endif
		872	{
651	ev_now = ev_time ();	873	rt_now = ev_time ();
		874	mn_now = rt_now;
		875	}
652		876
653	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	877	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
654	block = 0.;	878	block = 0.;
655	else	879	else
656	{	880	{
657	block = MAX_BLOCKTIME;	881	block = MAX_BLOCKTIME;
658		882
659	if (timercnt)	883	if (timercnt)
660	{	884	{
661	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	885	ev_tstamp to = timers [0]->at - mn_now + method_fudge;
662	if (block > to) block = to;	886	if (block > to) block = to;
663	}	887	}
664		888
665	if (periodiccnt)	889	if (periodiccnt)
666	{	890	{
667	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	891	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
668	if (block > to) block = to;	892	if (block > to) block = to;
669	}	893	}
670		894
671	if (block < 0.) block = 0.;	895	if (block < 0.) block = 0.;
672	}	896	}
673		897
674	method_poll (block);	898	method_poll (EV_A_ block);
675		899
676	/* update ev_now, do magic */	900	/* update rt_now, do magic */
677	time_update ();	901	time_update (EV_A);
678		902
679	/* queue pending timers and reschedule them */	903	/* queue pending timers and reschedule them */
680	timers_reify (); /* relative timers called last */	904	timers_reify (EV_A); /* relative timers called last */
681	periodics_reify (); /* absolute timers called first */	905	periodics_reify (EV_A); /* absolute timers called first */
682		906
683	/* queue idle watchers unless io or timers are pending */	907	/* queue idle watchers unless io or timers are pending */
684	if (!pendingcnt)	908	if (!pendingcnt)
685	queue_events ((W *)idles, idlecnt, EV_IDLE);	909	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
686		910
687	/* queue check watchers, to be executed first */	911	/* queue check watchers, to be executed first */
688	if (checkcnt)	912	if (checkcnt)
689	queue_events ((W *)checks, checkcnt, EV_CHECK);	913	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
690		914
691	call_pending ();	915	call_pending (EV_A);
		916	printf ("activecnt %d\n", activecnt);//D
692	}	917	}
693	while (!ev_loop_done);	918	while (activecnt && !loop_done);
694		919
695	if (ev_loop_done != 2)	920	if (loop_done != 2)
696	ev_loop_done = 0;	921	loop_done = 0;
		922	}
		923
		924	void
		925	ev_unloop (EV_P_ int how)
		926	{
		927	loop_done = how;
697	}	928	}
698		929
699	/*****************************************************************************/	930	/*****************************************************************************/
700		931
701	static void	932	inline void
702	wlist_add (WL *head, WL elem)	933	wlist_add (WL *head, WL elem)
703	{	934	{
704	elem->next = *head;	935	elem->next = *head;
705	*head = elem;	936	*head = elem;
706	}	937	}
707		938
708	static void	939	inline void
709	wlist_del (WL *head, WL elem)	940	wlist_del (WL *head, WL elem)
710	{	941	{
711	while (*head)	942	while (*head)
712	{	943	{
713	if (*head == elem)	944	if (*head == elem)
…		…
718		949
719	head = &(*head)->next;	950	head = &(*head)->next;
720	}	951	}
721	}	952	}
722		953
723	static void	954	inline void
724	ev_clear (W w)	955	ev_clear_pending (EV_P_ W w)
725	{	956	{
726	if (w->pending)	957	if (w->pending)
727	{	958	{
728	pendings [w->pending - 1].w = 0;	959	pendings [ABSPRI (w)][w->pending - 1].w = 0;
729	w->pending = 0;	960	w->pending = 0;
730	}	961	}
731	}	962	}
732		963
733	static void	964	inline void
734	ev_start (W w, int active)	965	ev_start (EV_P_ W w, int active)
735	{	966	{
		967	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		968	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		969
736	w->active = active;	970	w->active = active;
		971	ev_ref (EV_A);
737	}	972	}
738		973
739	static void	974	inline void
740	ev_stop (W w)	975	ev_stop (EV_P_ W w)
741	{	976	{
		977	ev_unref (EV_A);
742	w->active = 0;	978	w->active = 0;
743	}	979	}
744		980
745	/*****************************************************************************/	981	/*****************************************************************************/
746		982
747	void	983	void
748	ev_io_start (struct ev_io *w)	984	ev_io_start (EV_P_ struct ev_io *w)
749	{	985	{
		986	int fd = w->fd;
		987
750	if (ev_is_active (w))	988	if (ev_is_active (w))
751	return;	989	return;
752		990
753	int fd = w->fd;	991	assert (("ev_io_start called with negative fd", fd >= 0));
754		992
755	ev_start ((W)w, 1);	993	ev_start (EV_A_ (W)w, 1);
756	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	994	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
757	wlist_add ((WL *)&anfds[fd].head, (WL)w);	995	wlist_add ((WL *)&anfds[fd].head, (WL)w);
758		996
759	fd_change (fd);	997	fd_change (EV_A_ fd);
760	}	998	}
761		999
762	void	1000	void
763	ev_io_stop (struct ev_io *w)	1001	ev_io_stop (EV_P_ struct ev_io *w)
764	{	1002	{
765	ev_clear ((W)w);	1003	ev_clear_pending (EV_A_ (W)w);
766	if (!ev_is_active (w))	1004	if (!ev_is_active (w))
767	return;	1005	return;
768		1006
769	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1007	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
770	ev_stop ((W)w);	1008	ev_stop (EV_A_ (W)w);
771		1009
772	fd_change (w->fd);	1010	fd_change (EV_A_ w->fd);
773	}	1011	}
774		1012
775	void	1013	void
776	ev_timer_start (struct ev_timer *w)	1014	ev_timer_start (EV_P_ struct ev_timer *w)
777	{	1015	{
778	if (ev_is_active (w))	1016	if (ev_is_active (w))
779	return;	1017	return;
780		1018
781	w->at += now;	1019	w->at += mn_now;
782		1020
783	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1021	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
784		1022
785	ev_start ((W)w, ++timercnt);	1023	ev_start (EV_A_ (W)w, ++timercnt);
786	array_needsize (timers, timermax, timercnt, );	1024	array_needsize (timers, timermax, timercnt, );
787	timers [timercnt - 1] = w;	1025	timers [timercnt - 1] = w;
788	upheap ((WT *)timers, timercnt - 1);	1026	upheap ((WT *)timers, timercnt - 1);
789	}	1027	}
790		1028
791	void	1029	void
792	ev_timer_stop (struct ev_timer *w)	1030	ev_timer_stop (EV_P_ struct ev_timer *w)
793	{	1031	{
794	ev_clear ((W)w);	1032	ev_clear_pending (EV_A_ (W)w);
795	if (!ev_is_active (w))	1033	if (!ev_is_active (w))
796	return;	1034	return;
797		1035
798	if (w->active < timercnt--)	1036	if (w->active < timercnt--)
799	{	1037	{
…		…
801	downheap ((WT *)timers, timercnt, w->active - 1);	1039	downheap ((WT *)timers, timercnt, w->active - 1);
802	}	1040	}
803		1041
804	w->at = w->repeat;	1042	w->at = w->repeat;
805		1043
806	ev_stop ((W)w);	1044	ev_stop (EV_A_ (W)w);
807	}	1045	}
808		1046
809	void	1047	void
810	ev_timer_again (struct ev_timer *w)	1048	ev_timer_again (EV_P_ struct ev_timer *w)
811	{	1049	{
812	if (ev_is_active (w))	1050	if (ev_is_active (w))
813	{	1051	{
814	if (w->repeat)	1052	if (w->repeat)
815	{	1053	{
816	w->at = now + w->repeat;	1054	w->at = mn_now + w->repeat;
817	downheap ((WT *)timers, timercnt, w->active - 1);	1055	downheap ((WT *)timers, timercnt, w->active - 1);
818	}	1056	}
819	else	1057	else
820	ev_timer_stop (w);	1058	ev_timer_stop (EV_A_ w);
821	}	1059	}
822	else if (w->repeat)	1060	else if (w->repeat)
823	ev_timer_start (w);	1061	ev_timer_start (EV_A_ w);
824	}	1062	}
825		1063
826	void	1064	void
827	ev_periodic_start (struct ev_periodic *w)	1065	ev_periodic_start (EV_P_ struct ev_periodic *w)
828	{	1066	{
829	if (ev_is_active (w))	1067	if (ev_is_active (w))
830	return;	1068	return;
831		1069
832	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1070	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
833		1071
834	/* this formula differs from the one in periodic_reify because we do not always round up */	1072	/* this formula differs from the one in periodic_reify because we do not always round up */
835	if (w->interval)	1073	if (w->interval)
836	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1074	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
837		1075
838	ev_start ((W)w, ++periodiccnt);	1076	ev_start (EV_A_ (W)w, ++periodiccnt);
839	array_needsize (periodics, periodicmax, periodiccnt, );	1077	array_needsize (periodics, periodicmax, periodiccnt, );
840	periodics [periodiccnt - 1] = w;	1078	periodics [periodiccnt - 1] = w;
841	upheap ((WT *)periodics, periodiccnt - 1);	1079	upheap ((WT *)periodics, periodiccnt - 1);
842	}	1080	}
843		1081
844	void	1082	void
845	ev_periodic_stop (struct ev_periodic *w)	1083	ev_periodic_stop (EV_P_ struct ev_periodic *w)
846	{	1084	{
847	ev_clear ((W)w);	1085	ev_clear_pending (EV_A_ (W)w);
848	if (!ev_is_active (w))	1086	if (!ev_is_active (w))
849	return;	1087	return;
850		1088
851	if (w->active < periodiccnt--)	1089	if (w->active < periodiccnt--)
852	{	1090	{
853	periodics [w->active - 1] = periodics [periodiccnt];	1091	periodics [w->active - 1] = periodics [periodiccnt];
854	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1092	downheap ((WT *)periodics, periodiccnt, w->active - 1);
855	}	1093	}
856		1094
857	ev_stop ((W)w);	1095	ev_stop (EV_A_ (W)w);
858	}	1096	}
859		1097
		1098	#ifndef SA_RESTART
		1099	# define SA_RESTART 0
		1100	#endif
		1101
860	void	1102	void
861	ev_signal_start (struct ev_signal *w)	1103	ev_signal_start (EV_P_ struct ev_signal *w)
862	{	1104	{
863	if (ev_is_active (w))	1105	if (ev_is_active (w))
864	return;	1106	return;
865		1107
		1108	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1109
866	ev_start ((W)w, 1);	1110	ev_start (EV_A_ (W)w, 1);
867	array_needsize (signals, signalmax, w->signum, signals_init);	1111	array_needsize (signals, signalmax, w->signum, signals_init);
868	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1112	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
869		1113
870	if (!w->next)	1114	if (!w->next)
871	{	1115	{
872	struct sigaction sa;	1116	struct sigaction sa;
873	sa.sa_handler = sighandler;	1117	sa.sa_handler = sighandler;
874	sigfillset (&sa.sa_mask);	1118	sigfillset (&sa.sa_mask);
875	sa.sa_flags = 0;	1119	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
876	sigaction (w->signum, &sa, 0);	1120	sigaction (w->signum, &sa, 0);
877	}	1121	}
878	}	1122	}
879		1123
880	void	1124	void
881	ev_signal_stop (struct ev_signal *w)	1125	ev_signal_stop (EV_P_ struct ev_signal *w)
882	{	1126	{
883	ev_clear ((W)w);	1127	ev_clear_pending (EV_A_ (W)w);
884	if (!ev_is_active (w))	1128	if (!ev_is_active (w))
885	return;	1129	return;
886		1130
887	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1131	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
888	ev_stop ((W)w);	1132	ev_stop (EV_A_ (W)w);
889		1133
890	if (!signals [w->signum - 1].head)	1134	if (!signals [w->signum - 1].head)
891	signal (w->signum, SIG_DFL);	1135	signal (w->signum, SIG_DFL);
892	}	1136	}
893		1137
894	void	1138	void
895	ev_idle_start (struct ev_idle *w)	1139	ev_idle_start (EV_P_ struct ev_idle *w)
896	{	1140	{
897	if (ev_is_active (w))	1141	if (ev_is_active (w))
898	return;	1142	return;
899		1143
900	ev_start ((W)w, ++idlecnt);	1144	ev_start (EV_A_ (W)w, ++idlecnt);
901	array_needsize (idles, idlemax, idlecnt, );	1145	array_needsize (idles, idlemax, idlecnt, );
902	idles [idlecnt - 1] = w;	1146	idles [idlecnt - 1] = w;
903	}	1147	}
904		1148
905	void	1149	void
906	ev_idle_stop (struct ev_idle *w)	1150	ev_idle_stop (EV_P_ struct ev_idle *w)
907	{	1151	{
908	ev_clear ((W)w);	1152	ev_clear_pending (EV_A_ (W)w);
909	if (ev_is_active (w))	1153	if (ev_is_active (w))
910	return;	1154	return;
911		1155
912	idles [w->active - 1] = idles [--idlecnt];	1156	idles [w->active - 1] = idles [--idlecnt];
913	ev_stop ((W)w);	1157	ev_stop (EV_A_ (W)w);
914	}	1158	}
915		1159
916	void	1160	void
917	ev_prepare_start (struct ev_prepare *w)	1161	ev_prepare_start (EV_P_ struct ev_prepare *w)
918	{	1162	{
919	if (ev_is_active (w))	1163	if (ev_is_active (w))
920	return;	1164	return;
921		1165
922	ev_start ((W)w, ++preparecnt);	1166	ev_start (EV_A_ (W)w, ++preparecnt);
923	array_needsize (prepares, preparemax, preparecnt, );	1167	array_needsize (prepares, preparemax, preparecnt, );
924	prepares [preparecnt - 1] = w;	1168	prepares [preparecnt - 1] = w;
925	}	1169	}
926		1170
927	void	1171	void
928	ev_prepare_stop (struct ev_prepare *w)	1172	ev_prepare_stop (EV_P_ struct ev_prepare *w)
929	{	1173	{
930	ev_clear ((W)w);	1174	ev_clear_pending (EV_A_ (W)w);
931	if (ev_is_active (w))	1175	if (ev_is_active (w))
932	return;	1176	return;
933		1177
934	prepares [w->active - 1] = prepares [--preparecnt];	1178	prepares [w->active - 1] = prepares [--preparecnt];
935	ev_stop ((W)w);	1179	ev_stop (EV_A_ (W)w);
936	}	1180	}
937		1181
938	void	1182	void
939	ev_check_start (struct ev_check *w)	1183	ev_check_start (EV_P_ struct ev_check *w)
940	{	1184	{
941	if (ev_is_active (w))	1185	if (ev_is_active (w))
942	return;	1186	return;
943		1187
944	ev_start ((W)w, ++checkcnt);	1188	ev_start (EV_A_ (W)w, ++checkcnt);
945	array_needsize (checks, checkmax, checkcnt, );	1189	array_needsize (checks, checkmax, checkcnt, );
946	checks [checkcnt - 1] = w;	1190	checks [checkcnt - 1] = w;
947	}	1191	}
948		1192
949	void	1193	void
950	ev_check_stop (struct ev_check *w)	1194	ev_check_stop (EV_P_ struct ev_check *w)
951	{	1195	{
952	ev_clear ((W)w);	1196	ev_clear_pending (EV_A_ (W)w);
953	if (ev_is_active (w))	1197	if (ev_is_active (w))
954	return;	1198	return;
955		1199
956	checks [w->active - 1] = checks [--checkcnt];	1200	checks [w->active - 1] = checks [--checkcnt];
957	ev_stop ((W)w);	1201	ev_stop (EV_A_ (W)w);
958	}	1202	}
959		1203
960	void	1204	void
961	ev_child_start (struct ev_child *w)	1205	ev_child_start (EV_P_ struct ev_child *w)
962	{	1206	{
963	if (ev_is_active (w))	1207	if (ev_is_active (w))
964	return;	1208	return;
965		1209
966	ev_start ((W)w, 1);	1210	ev_start (EV_A_ (W)w, 1);
967	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1211	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
968	}	1212	}
969		1213
970	void	1214	void
971	ev_child_stop (struct ev_child *w)	1215	ev_child_stop (EV_P_ struct ev_child *w)
972	{	1216	{
973	ev_clear ((W)w);	1217	ev_clear_pending (EV_A_ (W)w);
974	if (ev_is_active (w))	1218	if (ev_is_active (w))
975	return;	1219	return;
976		1220
977	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1221	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
978	ev_stop ((W)w);	1222	ev_stop (EV_A_ (W)w);
979	}	1223	}
980		1224
981	/*****************************************************************************/	1225	/*****************************************************************************/
982		1226
983	struct ev_once	1227	struct ev_once
…		…
987	void (cb)(int revents, void arg);	1231	void (cb)(int revents, void arg);
988	void *arg;	1232	void *arg;
989	};	1233	};
990		1234
991	static void	1235	static void
992	once_cb (struct ev_once *once, int revents)	1236	once_cb (EV_P_ struct ev_once *once, int revents)
993	{	1237	{
994	void (cb)(int revents, void arg) = once->cb;	1238	void (cb)(int revents, void arg) = once->cb;
995	void *arg = once->arg;	1239	void *arg = once->arg;
996		1240
997	ev_io_stop (&once->io);	1241	ev_io_stop (EV_A_ &once->io);
998	ev_timer_stop (&once->to);	1242	ev_timer_stop (EV_A_ &once->to);
999	free (once);	1243	free (once);
1000		1244
1001	cb (revents, arg);	1245	cb (revents, arg);
1002	}	1246	}
1003		1247
1004	static void	1248	static void
1005	once_cb_io (struct ev_io *w, int revents)	1249	once_cb_io (EV_P_ struct ev_io *w, int revents)
1006	{	1250	{
1007	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1251	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1008	}	1252	}
1009		1253
1010	static void	1254	static void
1011	once_cb_to (struct ev_timer *w, int revents)	1255	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1012	{	1256	{
1013	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1257	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1014	}	1258	}
1015		1259
1016	void	1260	void
1017	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1261	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1018	{	1262	{
1019	struct ev_once *once = malloc (sizeof (struct ev_once));	1263	struct ev_once *once = malloc (sizeof (struct ev_once));
1020		1264
1021	if (!once)	1265	if (!once)
1022	cb (EV_ERROR, arg);	1266	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1023	else	1267	else
1024	{	1268	{
1025	once->cb = cb;	1269	once->cb = cb;
1026	once->arg = arg;	1270	once->arg = arg;
1027		1271
1028	ev_watcher_init (&once->io, once_cb_io);	1272	ev_watcher_init (&once->io, once_cb_io);
1029
1030	if (fd >= 0)	1273	if (fd >= 0)
1031	{	1274	{
1032	ev_io_set (&once->io, fd, events);	1275	ev_io_set (&once->io, fd, events);
1033	ev_io_start (&once->io);	1276	ev_io_start (EV_A_ &once->io);
1034	}	1277	}
1035		1278
1036	ev_watcher_init (&once->to, once_cb_to);	1279	ev_watcher_init (&once->to, once_cb_to);
1037
1038	if (timeout >= 0.)	1280	if (timeout >= 0.)
1039	{	1281	{
1040	ev_timer_set (&once->to, timeout, 0.);	1282	ev_timer_set (&once->to, timeout, 0.);
1041	ev_timer_start (&once->to);	1283	ev_timer_start (EV_A_ &once->to);
1042	}	1284	}
1043	}	1285	}
1044	}	1286	}
1045		1287
1046	/*****************************************************************************/	1288	/*****************************************************************************/

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Comparing libev/ev.c (file contents): Revision 1.28 by root, Thu Nov 1 06:48:49 2007 UTC vs. Revision 1.51 by root, Sat Nov 3 21:58:51 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.28 by root, Thu Nov 1 06:48:49 2007 UTC vs.
Revision 1.51 by root, Sat Nov 3 21:58:51 2007 UTC