[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 1.52 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	*/
		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);
		492	ev_unref (EV_A); /* child watcher should not keep loop alive */
377	}	493	}
378		494
379	/*****************************************************************************/	495	/*****************************************************************************/
380		496
381	static struct ev_idle **idles;	497	static struct ev_idle **idles;
…		…
390	/*****************************************************************************/	506	/*****************************************************************************/
391		507
392	static struct ev_child *childs [PID_HASHSIZE];	508	static struct ev_child *childs [PID_HASHSIZE];
393	static struct ev_signal childev;	509	static struct ev_signal childev;
394		510
		511	#ifndef WIN32
		512
395	#ifndef WCONTINUED	513	#ifndef WCONTINUED
396	# define WCONTINUED 0	514	# define WCONTINUED 0
397	#endif	515	#endif
398		516
399	static void	517	static void
400	childcb (struct ev_signal *sw, int revents)	518	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
401	{	519	{
402	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	{
403	int pid, status;	535	int pid, status;
404		536
405	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	537	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
406	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	538	{
407	if (w->pid == pid \|\| w->pid == -1)	539	/* make sure we are called again until all childs have been reaped */
408	{	540	event (EV_A_ (W)sw, EV_SIGNAL);
409	w->status = status;	541
410	event ((W)w, EV_CHILD);	542	child_reap (EV_A_ sw, pid, pid, status);
411	}	543	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		544	}
412	}	545	}
		546
		547	#endif
413		548
414	/*****************************************************************************/	549	/*****************************************************************************/
415		550
		551	#if EV_USE_KQUEUE
		552	# include "ev_kqueue.c"
		553	#endif
416	#if HAVE_EPOLL	554	#if EV_USE_EPOLL
417	# include "ev_epoll.c"	555	# include "ev_epoll.c"
418	#endif	556	#endif
		557	#if EV_USEV_POLL
		558	# include "ev_poll.c"
		559	#endif
419	#if HAVE_SELECT	560	#if EV_USE_SELECT
420	# include "ev_select.c"	561	# include "ev_select.c"
421	#endif	562	#endif
422		563
423	int	564	int
424	ev_version_major (void)	565	ev_version_major (void)
…		…
430	ev_version_minor (void)	571	ev_version_minor (void)
431	{	572	{
432	return EV_VERSION_MINOR;	573	return EV_VERSION_MINOR;
433	}	574	}
434		575
435	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)
436	{	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	{
437	if (!ev_method)	597	if (!method)
438	{	598	{
439	#if HAVE_MONOTONIC	599	#if EV_USE_MONOTONIC
440	{	600	{
441	struct timespec ts;	601	struct timespec ts;
442	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	602	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
443	have_monotonic = 1;	603	have_monotonic = 1;
444	}	604	}
445	#endif	605	#endif
446		606
447	ev_now = ev_time ();	607	rt_now = ev_time ();
448	now = get_clock ();	608	mn_now = get_clock ();
		609	now_floor = mn_now;
449	diff = ev_now - now;	610	diff = rt_now - mn_now;
450		611
451	if (pipe (sigpipe))	612	if (pipe (sigpipe))
452	return 0;	613	return 0;
453		614
		615	if (methods == EVMETHOD_AUTO)
		616	if (!enable_secure () && getenv ("LIBmethodS"))
		617	methods = atoi (getenv ("LIBmethodS"));
		618	else
454	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
455	#if HAVE_EPOLL	625	#if EV_USE_EPOLL
456	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	626	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
457	#endif	627	#endif
		628	#if EV_USEV_POLL
		629	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
		630	#endif
458	#if HAVE_SELECT	631	#if EV_USE_SELECT
459	if (ev_method == EVMETHOD_NONE) select_init (flags);	632	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
460	#endif	633	#endif
461		634
462	if (ev_method)	635	if (method)
463	{	636	{
464	ev_watcher_init (&sigev, sigcb);	637	ev_watcher_init (&sigev, sigcb);
		638	ev_set_priority (&sigev, EV_MAXPRI);
465	siginit ();	639	siginit (EV_A);
466		640
		641	#ifndef WIN32
467	ev_signal_init (&childev, childcb, SIGCHLD);	642	ev_signal_init (&childev, childcb, SIGCHLD);
		643	ev_set_priority (&childev, EV_MAXPRI);
468	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
469	}	647	}
470	}	648	}
471		649
472	return ev_method;	650	return method;
473	}	651	}
474		652
475	/*****************************************************************************/	653	/*****************************************************************************/
476		654
477	void	655	void
478	ev_prefork (void)	656	ev_fork_prepare (void)
479	{	657	{
480	/* nop */	658	/* nop */
481	}	659	}
482		660
483	void	661	void
484	ev_postfork_parent (void)	662	ev_fork_parent (void)
485	{	663	{
486	/* nop */	664	/* nop */
487	}	665	}
488		666
489	void	667	void
490	ev_postfork_child (void)	668	ev_fork_child (void)
491	{	669	{
492	#if HAVE_EPOLL	670	#if EV_USE_EPOLL
493	if (ev_method == EVMETHOD_EPOLL)	671	if (method == EVMETHOD_EPOLL)
494	epoll_postfork_child ();	672	epoll_postfork_child ();
495	#endif	673	#endif
496		674
497	ev_io_stop (&sigev);	675	ev_io_stop (&sigev);
498	close (sigpipe [0]);	676	close (sigpipe [0]);
…		…
502	}	680	}
503		681
504	/*****************************************************************************/	682	/*****************************************************************************/
505		683
506	static void	684	static void
507	call_pending (void)	685	call_pending (EV_P)
508	{	686	{
		687	int pri;
		688
		689	for (pri = NUMPRI; pri--; )
509	while (pendingcnt)	690	while (pendingcnt [pri])
510	{	691	{
511	ANPENDING *p = pendings + --pendingcnt;	692	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
512		693
513	if (p->w)	694	if (p->w)
514	{	695	{
515	p->w->pending = 0;	696	p->w->pending = 0;
516	p->w->cb (p->w, p->events);	697	p->w->cb (EV_A_ p->w, p->events);
517	}	698	}
518	}	699	}
519	}	700	}
520		701
521	static void	702	static void
522	timers_reify (void)	703	timers_reify (EV_P)
523	{	704	{
524	while (timercnt && timers [0]->at <= now)	705	while (timercnt && timers [0]->at <= mn_now)
525	{	706	{
526	struct ev_timer *w = timers [0];	707	struct ev_timer *w = timers [0];
527
528	event ((W)w, EV_TIMEOUT);
529		708
530	/* first reschedule or stop timer */	709	/* first reschedule or stop timer */
531	if (w->repeat)	710	if (w->repeat)
532	{	711	{
		712	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
533	w->at = now + w->repeat;	713	w->at = mn_now + w->repeat;
534	assert (("timer timeout in the past, negative repeat?", w->at > now));
535	downheap ((WT *)timers, timercnt, 0);	714	downheap ((WT *)timers, timercnt, 0);
536	}	715	}
537	else	716	else
538	ev_timer_stop (w); /* nonrepeating: stop timer */	717	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
539	}
540	}
541		718
		719	event ((W)w, EV_TIMEOUT);
		720	}
		721	}
		722
542	static void	723	static void
543	periodics_reify (void)	724	periodics_reify (EV_P)
544	{	725	{
545	while (periodiccnt && periodics [0]->at <= ev_now)	726	while (periodiccnt && periodics [0]->at <= rt_now)
546	{	727	{
547	struct ev_periodic *w = periodics [0];	728	struct ev_periodic *w = periodics [0];
548		729
549	/* first reschedule or stop timer */	730	/* first reschedule or stop timer */
550	if (w->interval)	731	if (w->interval)
551	{	732	{
552	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;
553	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));
554	downheap ((WT *)periodics, periodiccnt, 0);	735	downheap ((WT *)periodics, periodiccnt, 0);
555	}	736	}
556	else	737	else
557	ev_periodic_stop (w); /* nonrepeating: stop timer */	738	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
558		739
559	event ((W)w, EV_TIMEOUT);	740	event (EV_A_ (W)w, EV_PERIODIC);
560	}	741	}
561	}	742	}
562		743
563	static void	744	static void
564	periodics_reschedule (ev_tstamp diff)	745	periodics_reschedule (EV_P_ ev_tstamp diff)
565	{	746	{
566	int i;	747	int i;
567		748
568	/* adjust periodics after time jump */	749	/* adjust periodics after time jump */
569	for (i = 0; i < periodiccnt; ++i)	750	for (i = 0; i < periodiccnt; ++i)
570	{	751	{
571	struct ev_periodic *w = periodics [i];	752	struct ev_periodic *w = periodics [i];
572		753
573	if (w->interval)	754	if (w->interval)
574	{	755	{
575	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;
576		757
577	if (fabs (diff) >= 1e-4)	758	if (fabs (diff) >= 1e-4)
578	{	759	{
579	ev_periodic_stop (w);	760	ev_periodic_stop (EV_A_ w);
580	ev_periodic_start (w);	761	ev_periodic_start (EV_A_ w);
581		762
582	i = 0; /* restart loop, inefficient, but time jumps should be rare */	763	i = 0; /* restart loop, inefficient, but time jumps should be rare */
583	}	764	}
584	}	765	}
585	}	766	}
586	}	767	}
587		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
588	static void	787	static void
589	time_update (void)	788	time_update (EV_P)
590	{	789	{
591	int i;	790	int i;
592		791
593	ev_now = ev_time ();	792	#if EV_USE_MONOTONIC
594
595	if (have_monotonic)	793	if (expect_true (have_monotonic))
596	{	794	{
597	ev_tstamp odiff = diff;	795	if (time_update_monotonic (EV_A))
598
599	for (i = 4; --i; ) /* loop a few times, before making important decisions */
600	{	796	{
601	now = get_clock ();	797	ev_tstamp odiff = diff;
		798
		799	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		800	{
602	diff = ev_now - now;	801	diff = rt_now - mn_now;
603		802
604	if (fabs (odiff - diff) < MIN_TIMEJUMP)	803	if (fabs (odiff - diff) < MIN_TIMEJUMP)
605	return; /* all is well */	804	return; /* all is well */
606		805
607	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 */
608	}	813	}
609
610	periodics_reschedule (diff - odiff);
611	/* no timer adjustment, as the monotonic clock doesn't jump */
612	}	814	}
613	else	815	else
		816	#endif
614	{	817	{
615	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))
616	{	821	{
617	periodics_reschedule (ev_now - now);	822	periodics_reschedule (EV_A_ rt_now - mn_now);
618		823
619	/* 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 */
620	for (i = 0; i < timercnt; ++i)	825	for (i = 0; i < timercnt; ++i)
621	timers [i]->at += diff;	826	timers [i]->at += diff;
622	}	827	}
623		828
624	now = ev_now;	829	mn_now = rt_now;
625	}	830	}
626	}	831	}
627		832
628	int ev_loop_done;	833	void
		834	ev_ref (EV_P)
		835	{
		836	++activecnt;
		837	}
629		838
		839	void
		840	ev_unref (EV_P)
		841	{
		842	--activecnt;
		843	}
		844
		845	static int loop_done;
		846
		847	void
630	void ev_loop (int flags)	848	ev_loop (EV_P_ int flags)
631	{	849	{
632	double block;	850	double block;
633	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	851	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
634		852
635	do	853	do
636	{	854	{
637	/* queue check watchers (and execute them) */	855	/* queue check watchers (and execute them) */
638	if (preparecnt)	856	if (expect_false (preparecnt))
639	{	857	{
640	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	858	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
641	call_pending ();	859	call_pending (EV_A);
642	}	860	}
643		861
644	/* update fd-related kernel structures */	862	/* update fd-related kernel structures */
645	fd_reify ();	863	fd_reify (EV_A);
646		864
647	/* calculate blocking time */	865	/* calculate blocking time */
648		866
649	/* 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
650	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	{
651	ev_now = ev_time ();	875	rt_now = ev_time ();
		876	mn_now = rt_now;
		877	}
652		878
653	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	879	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
654	block = 0.;	880	block = 0.;
655	else	881	else
656	{	882	{
657	block = MAX_BLOCKTIME;	883	block = MAX_BLOCKTIME;
658		884
659	if (timercnt)	885	if (timercnt)
660	{	886	{
661	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;
662	if (block > to) block = to;	888	if (block > to) block = to;
663	}	889	}
664		890
665	if (periodiccnt)	891	if (periodiccnt)
666	{	892	{
667	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	893	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
668	if (block > to) block = to;	894	if (block > to) block = to;
669	}	895	}
670		896
671	if (block < 0.) block = 0.;	897	if (block < 0.) block = 0.;
672	}	898	}
673		899
674	method_poll (block);	900	method_poll (EV_A_ block);
675		901
676	/* update ev_now, do magic */	902	/* update rt_now, do magic */
677	time_update ();	903	time_update (EV_A);
678		904
679	/* queue pending timers and reschedule them */	905	/* queue pending timers and reschedule them */
680	timers_reify (); /* relative timers called last */	906	timers_reify (EV_A); /* relative timers called last */
681	periodics_reify (); /* absolute timers called first */	907	periodics_reify (EV_A); /* absolute timers called first */
682		908
683	/* queue idle watchers unless io or timers are pending */	909	/* queue idle watchers unless io or timers are pending */
684	if (!pendingcnt)	910	if (!pendingcnt)
685	queue_events ((W *)idles, idlecnt, EV_IDLE);	911	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
686		912
687	/* queue check watchers, to be executed first */	913	/* queue check watchers, to be executed first */
688	if (checkcnt)	914	if (checkcnt)
689	queue_events ((W *)checks, checkcnt, EV_CHECK);	915	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
690		916
691	call_pending ();	917	call_pending (EV_A);
692	}	918	}
693	while (!ev_loop_done);	919	while (activecnt && !loop_done);
694		920
695	if (ev_loop_done != 2)	921	if (loop_done != 2)
696	ev_loop_done = 0;	922	loop_done = 0;
		923	}
		924
		925	void
		926	ev_unloop (EV_P_ int how)
		927	{
		928	loop_done = how;
697	}	929	}
698		930
699	/*****************************************************************************/	931	/*****************************************************************************/
700		932
701	static void	933	inline void
702	wlist_add (WL *head, WL elem)	934	wlist_add (WL *head, WL elem)
703	{	935	{
704	elem->next = *head;	936	elem->next = *head;
705	*head = elem;	937	*head = elem;
706	}	938	}
707		939
708	static void	940	inline void
709	wlist_del (WL *head, WL elem)	941	wlist_del (WL *head, WL elem)
710	{	942	{
711	while (*head)	943	while (*head)
712	{	944	{
713	if (*head == elem)	945	if (*head == elem)
…		…
718		950
719	head = &(*head)->next;	951	head = &(*head)->next;
720	}	952	}
721	}	953	}
722		954
723	static void	955	inline void
724	ev_clear (W w)	956	ev_clear_pending (EV_P_ W w)
725	{	957	{
726	if (w->pending)	958	if (w->pending)
727	{	959	{
728	pendings [w->pending - 1].w = 0;	960	pendings [ABSPRI (w)][w->pending - 1].w = 0;
729	w->pending = 0;	961	w->pending = 0;
730	}	962	}
731	}	963	}
732		964
733	static void	965	inline void
734	ev_start (W w, int active)	966	ev_start (EV_P_ W w, int active)
735	{	967	{
		968	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		969	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		970
736	w->active = active;	971	w->active = active;
		972	ev_ref (EV_A);
737	}	973	}
738		974
739	static void	975	inline void
740	ev_stop (W w)	976	ev_stop (EV_P_ W w)
741	{	977	{
		978	ev_unref (EV_A);
742	w->active = 0;	979	w->active = 0;
743	}	980	}
744		981
745	/*****************************************************************************/	982	/*****************************************************************************/
746		983
747	void	984	void
748	ev_io_start (struct ev_io *w)	985	ev_io_start (EV_P_ struct ev_io *w)
749	{	986	{
		987	int fd = w->fd;
		988
750	if (ev_is_active (w))	989	if (ev_is_active (w))
751	return;	990	return;
752		991
753	int fd = w->fd;	992	assert (("ev_io_start called with negative fd", fd >= 0));
754		993
755	ev_start ((W)w, 1);	994	ev_start (EV_A_ (W)w, 1);
756	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	995	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
757	wlist_add ((WL *)&anfds[fd].head, (WL)w);	996	wlist_add ((WL *)&anfds[fd].head, (WL)w);
758		997
759	fd_change (fd);	998	fd_change (EV_A_ fd);
760	}	999	}
761		1000
762	void	1001	void
763	ev_io_stop (struct ev_io *w)	1002	ev_io_stop (EV_P_ struct ev_io *w)
764	{	1003	{
765	ev_clear ((W)w);	1004	ev_clear_pending (EV_A_ (W)w);
766	if (!ev_is_active (w))	1005	if (!ev_is_active (w))
767	return;	1006	return;
768		1007
769	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1008	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
770	ev_stop ((W)w);	1009	ev_stop (EV_A_ (W)w);
771		1010
772	fd_change (w->fd);	1011	fd_change (EV_A_ w->fd);
773	}	1012	}
774		1013
775	void	1014	void
776	ev_timer_start (struct ev_timer *w)	1015	ev_timer_start (EV_P_ struct ev_timer *w)
777	{	1016	{
778	if (ev_is_active (w))	1017	if (ev_is_active (w))
779	return;	1018	return;
780		1019
781	w->at += now;	1020	w->at += mn_now;
782		1021
783	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.));
784		1023
785	ev_start ((W)w, ++timercnt);	1024	ev_start (EV_A_ (W)w, ++timercnt);
786	array_needsize (timers, timermax, timercnt, );	1025	array_needsize (timers, timermax, timercnt, );
787	timers [timercnt - 1] = w;	1026	timers [timercnt - 1] = w;
788	upheap ((WT *)timers, timercnt - 1);	1027	upheap ((WT *)timers, timercnt - 1);
789	}	1028	}
790		1029
791	void	1030	void
792	ev_timer_stop (struct ev_timer *w)	1031	ev_timer_stop (EV_P_ struct ev_timer *w)
793	{	1032	{
794	ev_clear ((W)w);	1033	ev_clear_pending (EV_A_ (W)w);
795	if (!ev_is_active (w))	1034	if (!ev_is_active (w))
796	return;	1035	return;
797		1036
798	if (w->active < timercnt--)	1037	if (w->active < timercnt--)
799	{	1038	{
…		…
801	downheap ((WT *)timers, timercnt, w->active - 1);	1040	downheap ((WT *)timers, timercnt, w->active - 1);
802	}	1041	}
803		1042
804	w->at = w->repeat;	1043	w->at = w->repeat;
805		1044
806	ev_stop ((W)w);	1045	ev_stop (EV_A_ (W)w);
807	}	1046	}
808		1047
809	void	1048	void
810	ev_timer_again (struct ev_timer *w)	1049	ev_timer_again (EV_P_ struct ev_timer *w)
811	{	1050	{
812	if (ev_is_active (w))	1051	if (ev_is_active (w))
813	{	1052	{
814	if (w->repeat)	1053	if (w->repeat)
815	{	1054	{
816	w->at = now + w->repeat;	1055	w->at = mn_now + w->repeat;
817	downheap ((WT *)timers, timercnt, w->active - 1);	1056	downheap ((WT *)timers, timercnt, w->active - 1);
818	}	1057	}
819	else	1058	else
820	ev_timer_stop (w);	1059	ev_timer_stop (EV_A_ w);
821	}	1060	}
822	else if (w->repeat)	1061	else if (w->repeat)
823	ev_timer_start (w);	1062	ev_timer_start (EV_A_ w);
824	}	1063	}
825		1064
826	void	1065	void
827	ev_periodic_start (struct ev_periodic *w)	1066	ev_periodic_start (EV_P_ struct ev_periodic *w)
828	{	1067	{
829	if (ev_is_active (w))	1068	if (ev_is_active (w))
830	return;	1069	return;
831		1070
832	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.));
833		1072
834	/* 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 */
835	if (w->interval)	1074	if (w->interval)
836	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1075	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
837		1076
838	ev_start ((W)w, ++periodiccnt);	1077	ev_start (EV_A_ (W)w, ++periodiccnt);
839	array_needsize (periodics, periodicmax, periodiccnt, );	1078	array_needsize (periodics, periodicmax, periodiccnt, );
840	periodics [periodiccnt - 1] = w;	1079	periodics [periodiccnt - 1] = w;
841	upheap ((WT *)periodics, periodiccnt - 1);	1080	upheap ((WT *)periodics, periodiccnt - 1);
842	}	1081	}
843		1082
844	void	1083	void
845	ev_periodic_stop (struct ev_periodic *w)	1084	ev_periodic_stop (EV_P_ struct ev_periodic *w)
846	{	1085	{
847	ev_clear ((W)w);	1086	ev_clear_pending (EV_A_ (W)w);
848	if (!ev_is_active (w))	1087	if (!ev_is_active (w))
849	return;	1088	return;
850		1089
851	if (w->active < periodiccnt--)	1090	if (w->active < periodiccnt--)
852	{	1091	{
853	periodics [w->active - 1] = periodics [periodiccnt];	1092	periodics [w->active - 1] = periodics [periodiccnt];
854	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1093	downheap ((WT *)periodics, periodiccnt, w->active - 1);
855	}	1094	}
856		1095
857	ev_stop ((W)w);	1096	ev_stop (EV_A_ (W)w);
858	}	1097	}
859		1098
		1099	#ifndef SA_RESTART
		1100	# define SA_RESTART 0
		1101	#endif
		1102
860	void	1103	void
861	ev_signal_start (struct ev_signal *w)	1104	ev_signal_start (EV_P_ struct ev_signal *w)
862	{	1105	{
863	if (ev_is_active (w))	1106	if (ev_is_active (w))
864	return;	1107	return;
865		1108
		1109	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1110
866	ev_start ((W)w, 1);	1111	ev_start (EV_A_ (W)w, 1);
867	array_needsize (signals, signalmax, w->signum, signals_init);	1112	array_needsize (signals, signalmax, w->signum, signals_init);
868	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1113	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
869		1114
870	if (!w->next)	1115	if (!w->next)
871	{	1116	{
872	struct sigaction sa;	1117	struct sigaction sa;
873	sa.sa_handler = sighandler;	1118	sa.sa_handler = sighandler;
874	sigfillset (&sa.sa_mask);	1119	sigfillset (&sa.sa_mask);
875	sa.sa_flags = 0;	1120	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
876	sigaction (w->signum, &sa, 0);	1121	sigaction (w->signum, &sa, 0);
877	}	1122	}
878	}	1123	}
879		1124
880	void	1125	void
881	ev_signal_stop (struct ev_signal *w)	1126	ev_signal_stop (EV_P_ struct ev_signal *w)
882	{	1127	{
883	ev_clear ((W)w);	1128	ev_clear_pending (EV_A_ (W)w);
884	if (!ev_is_active (w))	1129	if (!ev_is_active (w))
885	return;	1130	return;
886		1131
887	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1132	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
888	ev_stop ((W)w);	1133	ev_stop (EV_A_ (W)w);
889		1134
890	if (!signals [w->signum - 1].head)	1135	if (!signals [w->signum - 1].head)
891	signal (w->signum, SIG_DFL);	1136	signal (w->signum, SIG_DFL);
892	}	1137	}
893		1138
894	void	1139	void
895	ev_idle_start (struct ev_idle *w)	1140	ev_idle_start (EV_P_ struct ev_idle *w)
896	{	1141	{
897	if (ev_is_active (w))	1142	if (ev_is_active (w))
898	return;	1143	return;
899		1144
900	ev_start ((W)w, ++idlecnt);	1145	ev_start (EV_A_ (W)w, ++idlecnt);
901	array_needsize (idles, idlemax, idlecnt, );	1146	array_needsize (idles, idlemax, idlecnt, );
902	idles [idlecnt - 1] = w;	1147	idles [idlecnt - 1] = w;
903	}	1148	}
904		1149
905	void	1150	void
906	ev_idle_stop (struct ev_idle *w)	1151	ev_idle_stop (EV_P_ struct ev_idle *w)
907	{	1152	{
908	ev_clear ((W)w);	1153	ev_clear_pending (EV_A_ (W)w);
909	if (ev_is_active (w))	1154	if (ev_is_active (w))
910	return;	1155	return;
911		1156
912	idles [w->active - 1] = idles [--idlecnt];	1157	idles [w->active - 1] = idles [--idlecnt];
913	ev_stop ((W)w);	1158	ev_stop (EV_A_ (W)w);
914	}	1159	}
915		1160
916	void	1161	void
917	ev_prepare_start (struct ev_prepare *w)	1162	ev_prepare_start (EV_P_ struct ev_prepare *w)
918	{	1163	{
919	if (ev_is_active (w))	1164	if (ev_is_active (w))
920	return;	1165	return;
921		1166
922	ev_start ((W)w, ++preparecnt);	1167	ev_start (EV_A_ (W)w, ++preparecnt);
923	array_needsize (prepares, preparemax, preparecnt, );	1168	array_needsize (prepares, preparemax, preparecnt, );
924	prepares [preparecnt - 1] = w;	1169	prepares [preparecnt - 1] = w;
925	}	1170	}
926		1171
927	void	1172	void
928	ev_prepare_stop (struct ev_prepare *w)	1173	ev_prepare_stop (EV_P_ struct ev_prepare *w)
929	{	1174	{
930	ev_clear ((W)w);	1175	ev_clear_pending (EV_A_ (W)w);
931	if (ev_is_active (w))	1176	if (ev_is_active (w))
932	return;	1177	return;
933		1178
934	prepares [w->active - 1] = prepares [--preparecnt];	1179	prepares [w->active - 1] = prepares [--preparecnt];
935	ev_stop ((W)w);	1180	ev_stop (EV_A_ (W)w);
936	}	1181	}
937		1182
938	void	1183	void
939	ev_check_start (struct ev_check *w)	1184	ev_check_start (EV_P_ struct ev_check *w)
940	{	1185	{
941	if (ev_is_active (w))	1186	if (ev_is_active (w))
942	return;	1187	return;
943		1188
944	ev_start ((W)w, ++checkcnt);	1189	ev_start (EV_A_ (W)w, ++checkcnt);
945	array_needsize (checks, checkmax, checkcnt, );	1190	array_needsize (checks, checkmax, checkcnt, );
946	checks [checkcnt - 1] = w;	1191	checks [checkcnt - 1] = w;
947	}	1192	}
948		1193
949	void	1194	void
950	ev_check_stop (struct ev_check *w)	1195	ev_check_stop (EV_P_ struct ev_check *w)
951	{	1196	{
952	ev_clear ((W)w);	1197	ev_clear_pending (EV_A_ (W)w);
953	if (ev_is_active (w))	1198	if (ev_is_active (w))
954	return;	1199	return;
955		1200
956	checks [w->active - 1] = checks [--checkcnt];	1201	checks [w->active - 1] = checks [--checkcnt];
957	ev_stop ((W)w);	1202	ev_stop (EV_A_ (W)w);
958	}	1203	}
959		1204
960	void	1205	void
961	ev_child_start (struct ev_child *w)	1206	ev_child_start (EV_P_ struct ev_child *w)
962	{	1207	{
963	if (ev_is_active (w))	1208	if (ev_is_active (w))
964	return;	1209	return;
965		1210
966	ev_start ((W)w, 1);	1211	ev_start (EV_A_ (W)w, 1);
967	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1212	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
968	}	1213	}
969		1214
970	void	1215	void
971	ev_child_stop (struct ev_child *w)	1216	ev_child_stop (EV_P_ struct ev_child *w)
972	{	1217	{
973	ev_clear ((W)w);	1218	ev_clear_pending (EV_A_ (W)w);
974	if (ev_is_active (w))	1219	if (ev_is_active (w))
975	return;	1220	return;
976		1221
977	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1222	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
978	ev_stop ((W)w);	1223	ev_stop (EV_A_ (W)w);
979	}	1224	}
980		1225
981	/*****************************************************************************/	1226	/*****************************************************************************/
982		1227
983	struct ev_once	1228	struct ev_once
…		…
987	void (cb)(int revents, void arg);	1232	void (cb)(int revents, void arg);
988	void *arg;	1233	void *arg;
989	};	1234	};
990		1235
991	static void	1236	static void
992	once_cb (struct ev_once *once, int revents)	1237	once_cb (EV_P_ struct ev_once *once, int revents)
993	{	1238	{
994	void (cb)(int revents, void arg) = once->cb;	1239	void (cb)(int revents, void arg) = once->cb;
995	void *arg = once->arg;	1240	void *arg = once->arg;
996		1241
997	ev_io_stop (&once->io);	1242	ev_io_stop (EV_A_ &once->io);
998	ev_timer_stop (&once->to);	1243	ev_timer_stop (EV_A_ &once->to);
999	free (once);	1244	free (once);
1000		1245
1001	cb (revents, arg);	1246	cb (revents, arg);
1002	}	1247	}
1003		1248
1004	static void	1249	static void
1005	once_cb_io (struct ev_io *w, int revents)	1250	once_cb_io (EV_P_ struct ev_io *w, int revents)
1006	{	1251	{
1007	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);
1008	}	1253	}
1009		1254
1010	static void	1255	static void
1011	once_cb_to (struct ev_timer *w, int revents)	1256	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1012	{	1257	{
1013	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);
1014	}	1259	}
1015		1260
1016	void	1261	void
1017	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)
1018	{	1263	{
1019	struct ev_once *once = malloc (sizeof (struct ev_once));	1264	struct ev_once *once = malloc (sizeof (struct ev_once));
1020		1265
1021	if (!once)	1266	if (!once)
1022	cb (EV_ERROR, arg);	1267	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1023	else	1268	else
1024	{	1269	{
1025	once->cb = cb;	1270	once->cb = cb;
1026	once->arg = arg;	1271	once->arg = arg;
1027		1272
1028	ev_watcher_init (&once->io, once_cb_io);	1273	ev_watcher_init (&once->io, once_cb_io);
1029
1030	if (fd >= 0)	1274	if (fd >= 0)
1031	{	1275	{
1032	ev_io_set (&once->io, fd, events);	1276	ev_io_set (&once->io, fd, events);
1033	ev_io_start (&once->io);	1277	ev_io_start (EV_A_ &once->io);
1034	}	1278	}
1035		1279
1036	ev_watcher_init (&once->to, once_cb_to);	1280	ev_watcher_init (&once->to, once_cb_to);
1037
1038	if (timeout >= 0.)	1281	if (timeout >= 0.)
1039	{	1282	{
1040	ev_timer_set (&once->to, timeout, 0.);	1283	ev_timer_set (&once->to, timeout, 0.);
1041	ev_timer_start (&once->to);	1284	ev_timer_start (EV_A_ &once->to);
1042	}	1285	}
1043	}	1286	}
1044	}	1287	}
1045		1288
1046	/*****************************************************************************/	1289	/*****************************************************************************/

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Comparing libev/ev.c (file contents): Revision 1.28 by root, Thu Nov 1 06:48:49 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 1.28 by root, Thu Nov 1 06:48:49 2007 UTC vs.
Revision 1.52 by root, Sat Nov 3 22:10:39 2007 UTC