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

Comparing libev/ev.c (file contents):
Revision 1.38 by root, Thu Nov 1 15:21:13 2007 UTC vs.
Revision 1.52 by root, Sat Nov 3 22:10:39 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (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
29	* 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.
30	*/	30	*/
31	#if EV_USE_CONFIG_H	31	#ifndef EV_STANDALONE
32	# include "config.h"	32	# include "config.h"
33	#endif	33	#endif
34		34
35	#include <math.h>	35	#include <math.h>
36	#include <stdlib.h>	36	#include <stdlib.h>
…		…
42	#include <stdio.h>	42	#include <stdio.h>
43		43
44	#include <assert.h>	44	#include <assert.h>
45	#include <errno.h>	45	#include <errno.h>
46	#include <sys/types.h>	46	#include <sys/types.h>
		47	#ifndef WIN32
47	#include <sys/wait.h>	48	# include <sys/wait.h>
		49	#endif
48	#include <sys/time.h>	50	#include <sys/time.h>
49	#include <time.h>	51	#include <time.h>
50		52
		53	/**/
		54
51	#ifndef EV_USE_MONOTONIC	55	#ifndef EV_USE_MONOTONIC
52	# define EV_USE_MONOTONIC 1	56	# define EV_USE_MONOTONIC 1
53	#endif	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	/**/
54		80
55	#ifndef CLOCK_MONOTONIC	81	#ifndef CLOCK_MONOTONIC
56	# undef EV_USE_MONOTONIC	82	# undef EV_USE_MONOTONIC
57	# define EV_USE_MONOTONIC 0	83	# define EV_USE_MONOTONIC 0
58	#endif	84	#endif
59		85
60	#ifndef EV_USE_SELECT
61	# define EV_USE_SELECT 1
62	#endif
63
64	#ifndef EV_USE_EPOLL
65	# define EV_USE_EPOLL 0
66	#endif
67
68	#ifndef CLOCK_REALTIME	86	#ifndef CLOCK_REALTIME
		87	# undef EV_USE_REALTIME
69	# define EV_USE_REALTIME 0	88	# define EV_USE_REALTIME 0
70	#endif	89	#endif
71	#ifndef EV_USE_REALTIME	90
72	# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */	91	/**/
73	#endif
74		92
75	#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) */
76	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detetc time jumps) */	94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
77	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
78	#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */	96	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
79		97
80	#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)
81		113
82	typedef struct ev_watcher *W;	114	typedef struct ev_watcher *W;
83	typedef struct ev_watcher_list *WL;	115	typedef struct ev_watcher_list *WL;
84	typedef struct ev_watcher_time *WT;	116	typedef struct ev_watcher_time *WT;
85		117
86	static ev_tstamp now, diff; /* monotonic clock */	118	static ev_tstamp now_floor, mn_now, diff; /* monotonic clock */
87	ev_tstamp ev_now;	119	static ev_tstamp rt_now;
88	int ev_method;	120	static int method;
89		121
90	static int have_monotonic; /* runtime */	122	static int have_monotonic; /* runtime */
91		123
92	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
93	static void (*method_modify)(int fd, int oev, int nev);	125	static void (*method_modify)(EV_P_ int fd, int oev, int nev);
94	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
95		156
96	/*****************************************************************************/	157	/*****************************************************************************/
97		158
98	ev_tstamp	159	inline ev_tstamp
99	ev_time (void)	160	ev_time (void)
100	{	161	{
101	#if EV_USE_REALTIME	162	#if EV_USE_REALTIME
102	struct timespec ts;	163	struct timespec ts;
103	clock_gettime (CLOCK_REALTIME, &ts);	164	clock_gettime (CLOCK_REALTIME, &ts);
…		…
107	gettimeofday (&tv, 0);	168	gettimeofday (&tv, 0);
108	return tv.tv_sec + tv.tv_usec * 1e-6;	169	return tv.tv_sec + tv.tv_usec * 1e-6;
109	#endif	170	#endif
110	}	171	}
111		172
112	static ev_tstamp	173	inline ev_tstamp
113	get_clock (void)	174	get_clock (void)
114	{	175	{
115	#if EV_USE_MONOTONIC	176	#if EV_USE_MONOTONIC
116	if (have_monotonic)	177	if (expect_true (have_monotonic))
117	{	178	{
118	struct timespec ts;	179	struct timespec ts;
119	clock_gettime (CLOCK_MONOTONIC, &ts);	180	clock_gettime (CLOCK_MONOTONIC, &ts);
120	return ts.tv_sec + ts.tv_nsec * 1e-9;	181	return ts.tv_sec + ts.tv_nsec * 1e-9;
121	}	182	}
122	#endif	183	#endif
123		184
124	return ev_time ();	185	return ev_time ();
125	}	186	}
126		187
		188	ev_tstamp
		189	ev_now (EV_P)
		190	{
		191	return rt_now;
		192	}
		193
127	#define array_roundsize(base,n) ((n) \| 4 & ~3)	194	#define array_roundsize(base,n) ((n) \| 4 & ~3)
128		195
129	#define array_needsize(base,cur,cnt,init) \	196	#define array_needsize(base,cur,cnt,init) \
130	if ((cnt) > cur) \	197	if (expect_false ((cnt) > cur)) \
131	{ \	198	{ \
132	int newcnt = cur; \	199	int newcnt = cur; \
133	do \	200	do \
134	{ \	201	{ \
135	newcnt = array_roundsize (base, newcnt << 1); \	202	newcnt = array_roundsize (base, newcnt << 1); \
…		…
143		210
144	/*****************************************************************************/	211	/*****************************************************************************/
145		212
146	typedef struct	213	typedef struct
147	{	214	{
148	struct ev_io *head;	215	struct ev_watcher_list *head;
149	unsigned char events;	216	unsigned char events;
150	unsigned char reify;	217	unsigned char reify;
151	} ANFD;	218	} ANFD;
152		219
153	static ANFD *anfds;	220	static ANFD *anfds;
…		…
170	{	237	{
171	W w;	238	W w;
172	int events;	239	int events;
173	} ANPENDING;	240	} ANPENDING;
174		241
175	static ANPENDING *pendings;	242	static ANPENDING *pendings [NUMPRI];
176	static int pendingmax, pendingcnt;	243	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
177		244
178	static void	245	static void
179	event (W w, int events)	246	event (EV_P_ W w, int events)
180	{	247	{
181	if (w->pending)	248	if (w->pending)
182	{	249	{
183	pendings [w->pending - 1].events \|= events;	250	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
184	return;	251	return;
185	}	252	}
186		253
187	w->pending = ++pendingcnt;	254	w->pending = ++pendingcnt [ABSPRI (w)];
188	array_needsize (pendings, pendingmax, pendingcnt, );	255	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
189	pendings [pendingcnt - 1].w = w;	256	pendings [ABSPRI (w)][w->pending - 1].w = w;
190	pendings [pendingcnt - 1].events = events;	257	pendings [ABSPRI (w)][w->pending - 1].events = events;
191	}	258	}
192		259
193	static void	260	static void
194	queue_events (W *events, int eventcnt, int type)	261	queue_events (EV_P_ W *events, int eventcnt, int type)
195	{	262	{
196	int i;	263	int i;
197		264
198	for (i = 0; i < eventcnt; ++i)	265	for (i = 0; i < eventcnt; ++i)
199	event (events [i], type);	266	event (EV_A_ events [i], type);
200	}	267	}
201		268
202	static void	269	static void
203	fd_event (int fd, int events)	270	fd_event (EV_P_ int fd, int events)
204	{	271	{
205	ANFD *anfd = anfds + fd;	272	ANFD *anfd = anfds + fd;
206	struct ev_io *w;	273	struct ev_io *w;
207		274
208	for (w = anfd->head; w; w = w->next)	275	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
209	{	276	{
210	int ev = w->events & events;	277	int ev = w->events & events;
211		278
212	if (ev)	279	if (ev)
213	event ((W)w, ev);	280	event (EV_A_ (W)w, ev);
214	}	281	}
215	}	282	}
216		283
217	/*****************************************************************************/	284	/*****************************************************************************/
218		285
219	static int *fdchanges;	286	static int *fdchanges;
220	static int fdchangemax, fdchangecnt;	287	static int fdchangemax, fdchangecnt;
221		288
222	static void	289	static void
223	fd_reify (void)	290	fd_reify (EV_P)
224	{	291	{
225	int i;	292	int i;
226		293
227	for (i = 0; i < fdchangecnt; ++i)	294	for (i = 0; i < fdchangecnt; ++i)
228	{	295	{
…		…
230	ANFD *anfd = anfds + fd;	297	ANFD *anfd = anfds + fd;
231	struct ev_io *w;	298	struct ev_io *w;
232		299
233	int events = 0;	300	int events = 0;
234		301
235	for (w = anfd->head; w; w = w->next)	302	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
236	events \|= w->events;	303	events \|= w->events;
237		304
238	anfd->reify = 0;	305	anfd->reify = 0;
239		306
240	if (anfd->events != events)	307	if (anfd->events != events)
241	{	308	{
242	method_modify (fd, anfd->events, events);	309	method_modify (EV_A_ fd, anfd->events, events);
243	anfd->events = events;	310	anfd->events = events;
244	}	311	}
245	}	312	}
246		313
247	fdchangecnt = 0;	314	fdchangecnt = 0;
248	}	315	}
249		316
250	static void	317	static void
251	fd_change (int fd)	318	fd_change (EV_P_ int fd)
252	{	319	{
253	if (anfds [fd].reify \|\| fdchangecnt < 0)	320	if (anfds [fd].reify \|\| fdchangecnt < 0)
254	return;	321	return;
255		322
256	anfds [fd].reify = 1;	323	anfds [fd].reify = 1;
…		…
258	++fdchangecnt;	325	++fdchangecnt;
259	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	326	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
260	fdchanges [fdchangecnt - 1] = fd;	327	fdchanges [fdchangecnt - 1] = fd;
261	}	328	}
262		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
263	/* called on EBADF to verify fds */	342	/* called on EBADF to verify fds */
264	static void	343	static void
265	fd_recheck (void)	344	fd_ebadf (EV_P)
266	{	345	{
267	int fd;	346	int fd;
268		347
269	for (fd = 0; fd < anfdmax; ++fd)	348	for (fd = 0; fd < anfdmax; ++fd)
270	if (anfds [fd].events)	349	if (anfds [fd].events)
271	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	350	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
272	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)
273	{	362	{
274	ev_io_stop (anfds [fd].head);	363	close (fd);
275	event ((W)anfds [fd].head, EV_ERROR \| EV_READ \| EV_WRITE);	364	fd_kill (EV_A_ fd);
		365	return;
276	}	366	}
277	}	367	}
278		368
279	/*****************************************************************************/	369	/*****************************************************************************/
280		370
281	static struct ev_timer **timers;	371	static struct ev_timer **timers;
…		…
327		417
328	/*****************************************************************************/	418	/*****************************************************************************/
329		419
330	typedef struct	420	typedef struct
331	{	421	{
332	struct ev_signal *head;	422	struct ev_watcher_list *head;
333	sig_atomic_t volatile gotsig;	423	sig_atomic_t volatile gotsig;
334	} ANSIG;	424	} ANSIG;
335		425
336	static ANSIG *signals;	426	static ANSIG *signals;
337	static int signalmax;	427	static int signalmax;
…		…
357	{	447	{
358	signals [signum - 1].gotsig = 1;	448	signals [signum - 1].gotsig = 1;
359		449
360	if (!gotsig)	450	if (!gotsig)
361	{	451	{
		452	int old_errno = errno;
362	gotsig = 1;	453	gotsig = 1;
363	write (sigpipe [1], &signum, 1);	454	write (sigpipe [1], &signum, 1);
		455	errno = old_errno;
364	}	456	}
365	}	457	}
366		458
367	static void	459	static void
368	sigcb (struct ev_io *iow, int revents)	460	sigcb (EV_P_ struct ev_io *iow, int revents)
369	{	461	{
370	struct ev_signal *w;	462	struct ev_watcher_list *w;
371	int signum;	463	int signum;
372		464
373	read (sigpipe [0], &revents, 1);	465	read (sigpipe [0], &revents, 1);
374	gotsig = 0;	466	gotsig = 0;
375		467
…		…
377	if (signals [signum].gotsig)	469	if (signals [signum].gotsig)
378	{	470	{
379	signals [signum].gotsig = 0;	471	signals [signum].gotsig = 0;
380		472
381	for (w = signals [signum].head; w; w = w->next)	473	for (w = signals [signum].head; w; w = w->next)
382	event ((W)w, EV_SIGNAL);	474	event (EV_A_ (W)w, EV_SIGNAL);
383	}	475	}
384	}	476	}
385		477
386	static void	478	static void
387	siginit (void)	479	siginit (EV_P)
388	{	480	{
		481	#ifndef WIN32
389	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	482	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
390	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	483	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
391		484
392	/* rather than sort out wether we really need nb, set it */	485	/* rather than sort out wether we really need nb, set it */
393	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	486	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
394	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	487	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		488	#endif
395		489
396	ev_io_set (&sigev, sigpipe [0], EV_READ);	490	ev_io_set (&sigev, sigpipe [0], EV_READ);
397	ev_io_start (&sigev);	491	ev_io_start (&sigev);
		492	ev_unref (EV_A); /* child watcher should not keep loop alive */
398	}	493	}
399		494
400	/*****************************************************************************/	495	/*****************************************************************************/
401		496
402	static struct ev_idle **idles;	497	static struct ev_idle **idles;
…		…
411	/*****************************************************************************/	506	/*****************************************************************************/
412		507
413	static struct ev_child *childs [PID_HASHSIZE];	508	static struct ev_child *childs [PID_HASHSIZE];
414	static struct ev_signal childev;	509	static struct ev_signal childev;
415		510
		511	#ifndef WIN32
		512
416	#ifndef WCONTINUED	513	#ifndef WCONTINUED
417	# define WCONTINUED 0	514	# define WCONTINUED 0
418	#endif	515	#endif
419		516
420	static void	517	static void
421	childcb (struct ev_signal *sw, int revents)	518	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
422	{	519	{
423	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	{
424	int pid, status;	535	int pid, status;
425		536
426	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	537	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
427	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	538	{
428	if (w->pid == pid \|\| w->pid == -1)	539	/* make sure we are called again until all childs have been reaped */
429	{	540	event (EV_A_ (W)sw, EV_SIGNAL);
430	w->status = status;	541
431	event ((W)w, EV_CHILD);	542	child_reap (EV_A_ sw, pid, pid, status);
432	}	543	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		544	}
433	}	545	}
		546
		547	#endif
434		548
435	/*****************************************************************************/	549	/*****************************************************************************/
436		550
		551	#if EV_USE_KQUEUE
		552	# include "ev_kqueue.c"
		553	#endif
437	#if EV_USE_EPOLL	554	#if EV_USE_EPOLL
438	# include "ev_epoll.c"	555	# include "ev_epoll.c"
439	#endif	556	#endif
		557	#if EV_USEV_POLL
		558	# include "ev_poll.c"
		559	#endif
440	#if EV_USE_SELECT	560	#if EV_USE_SELECT
441	# include "ev_select.c"	561	# include "ev_select.c"
442	#endif	562	#endif
443		563
444	int	564	int
…		…
451	ev_version_minor (void)	571	ev_version_minor (void)
452	{	572	{
453	return EV_VERSION_MINOR;	573	return EV_VERSION_MINOR;
454	}	574	}
455		575
456	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)
457	{	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	{
458	if (!ev_method)	597	if (!method)
459	{	598	{
460	#if EV_USE_MONOTONIC	599	#if EV_USE_MONOTONIC
461	{	600	{
462	struct timespec ts;	601	struct timespec ts;
463	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	602	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
464	have_monotonic = 1;	603	have_monotonic = 1;
465	}	604	}
466	#endif	605	#endif
467		606
468	ev_now = ev_time ();	607	rt_now = ev_time ();
469	now = get_clock ();	608	mn_now = get_clock ();
		609	now_floor = mn_now;
470	diff = ev_now - now;	610	diff = rt_now - mn_now;
471		611
472	if (pipe (sigpipe))	612	if (pipe (sigpipe))
473	return 0;	613	return 0;
474		614
		615	if (methods == EVMETHOD_AUTO)
		616	if (!enable_secure () && getenv ("LIBmethodS"))
		617	methods = atoi (getenv ("LIBmethodS"));
		618	else
475	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
476	#if EV_USE_EPOLL	625	#if EV_USE_EPOLL
477	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	626	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
		627	#endif
		628	#if EV_USEV_POLL
		629	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
478	#endif	630	#endif
479	#if EV_USE_SELECT	631	#if EV_USE_SELECT
480	if (ev_method == EVMETHOD_NONE) select_init (flags);	632	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
481	#endif	633	#endif
482		634
483	if (ev_method)	635	if (method)
484	{	636	{
485	ev_watcher_init (&sigev, sigcb);	637	ev_watcher_init (&sigev, sigcb);
		638	ev_set_priority (&sigev, EV_MAXPRI);
486	siginit ();	639	siginit (EV_A);
487		640
		641	#ifndef WIN32
488	ev_signal_init (&childev, childcb, SIGCHLD);	642	ev_signal_init (&childev, childcb, SIGCHLD);
		643	ev_set_priority (&childev, EV_MAXPRI);
489	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
490	}	647	}
491	}	648	}
492		649
493	return ev_method;	650	return method;
494	}	651	}
495		652
496	/*****************************************************************************/	653	/*****************************************************************************/
497		654
498	void	655	void
…		…
509		666
510	void	667	void
511	ev_fork_child (void)	668	ev_fork_child (void)
512	{	669	{
513	#if EV_USE_EPOLL	670	#if EV_USE_EPOLL
514	if (ev_method == EVMETHOD_EPOLL)	671	if (method == EVMETHOD_EPOLL)
515	epoll_postfork_child ();	672	epoll_postfork_child ();
516	#endif	673	#endif
517		674
518	ev_io_stop (&sigev);	675	ev_io_stop (&sigev);
519	close (sigpipe [0]);	676	close (sigpipe [0]);
…		…
523	}	680	}
524		681
525	/*****************************************************************************/	682	/*****************************************************************************/
526		683
527	static void	684	static void
528	call_pending (void)	685	call_pending (EV_P)
529	{	686	{
		687	int pri;
		688
		689	for (pri = NUMPRI; pri--; )
530	while (pendingcnt)	690	while (pendingcnt [pri])
531	{	691	{
532	ANPENDING *p = pendings + --pendingcnt;	692	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
533		693
534	if (p->w)	694	if (p->w)
535	{	695	{
536	p->w->pending = 0;	696	p->w->pending = 0;
537	p->w->cb (p->w, p->events);	697	p->w->cb (EV_A_ p->w, p->events);
538	}	698	}
539	}	699	}
540	}	700	}
541		701
542	static void	702	static void
543	timers_reify (void)	703	timers_reify (EV_P)
544	{	704	{
545	while (timercnt && timers [0]->at <= now)	705	while (timercnt && timers [0]->at <= mn_now)
546	{	706	{
547	struct ev_timer *w = timers [0];	707	struct ev_timer *w = timers [0];
548		708
549	/* first reschedule or stop timer */	709	/* first reschedule or stop timer */
550	if (w->repeat)	710	if (w->repeat)
551	{	711	{
552	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	712	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
553	w->at = now + w->repeat;	713	w->at = mn_now + w->repeat;
554	downheap ((WT *)timers, timercnt, 0);	714	downheap ((WT *)timers, timercnt, 0);
555	}	715	}
556	else	716	else
557	ev_timer_stop (w); /* nonrepeating: stop timer */	717	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
558		718
559	event ((W)w, EV_TIMEOUT);	719	event ((W)w, EV_TIMEOUT);
560	}	720	}
561	}	721	}
562		722
563	static void	723	static void
564	periodics_reify (void)	724	periodics_reify (EV_P)
565	{	725	{
566	while (periodiccnt && periodics [0]->at <= ev_now)	726	while (periodiccnt && periodics [0]->at <= rt_now)
567	{	727	{
568	struct ev_periodic *w = periodics [0];	728	struct ev_periodic *w = periodics [0];
569		729
570	/* first reschedule or stop timer */	730	/* first reschedule or stop timer */
571	if (w->interval)	731	if (w->interval)
572	{	732	{
573	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;
574	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	734	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
575	downheap ((WT *)periodics, periodiccnt, 0);	735	downheap ((WT *)periodics, periodiccnt, 0);
576	}	736	}
577	else	737	else
578	ev_periodic_stop (w); /* nonrepeating: stop timer */	738	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
579		739
580	event ((W)w, EV_PERIODIC);	740	event (EV_A_ (W)w, EV_PERIODIC);
581	}	741	}
582	}	742	}
583		743
584	static void	744	static void
585	periodics_reschedule (ev_tstamp diff)	745	periodics_reschedule (EV_P_ ev_tstamp diff)
586	{	746	{
587	int i;	747	int i;
588		748
589	/* adjust periodics after time jump */	749	/* adjust periodics after time jump */
590	for (i = 0; i < periodiccnt; ++i)	750	for (i = 0; i < periodiccnt; ++i)
591	{	751	{
592	struct ev_periodic *w = periodics [i];	752	struct ev_periodic *w = periodics [i];
593		753
594	if (w->interval)	754	if (w->interval)
595	{	755	{
596	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;
597		757
598	if (fabs (diff) >= 1e-4)	758	if (fabs (diff) >= 1e-4)
599	{	759	{
600	ev_periodic_stop (w);	760	ev_periodic_stop (EV_A_ w);
601	ev_periodic_start (w);	761	ev_periodic_start (EV_A_ w);
602		762
603	i = 0; /* restart loop, inefficient, but time jumps should be rare */	763	i = 0; /* restart loop, inefficient, but time jumps should be rare */
604	}	764	}
605	}	765	}
606	}	766	}
607	}	767	}
608		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
609	static void	787	static void
610	time_update (void)	788	time_update (EV_P)
611	{	789	{
612	int i;	790	int i;
613		791
614	ev_now = ev_time ();	792	#if EV_USE_MONOTONIC
615
616	if (have_monotonic)	793	if (expect_true (have_monotonic))
617	{	794	{
618	ev_tstamp odiff = diff;	795	if (time_update_monotonic (EV_A))
619
620	for (i = 4; --i; ) /* loop a few times, before making important decisions */
621	{	796	{
622	now = get_clock ();	797	ev_tstamp odiff = diff;
		798
		799	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		800	{
623	diff = ev_now - now;	801	diff = rt_now - mn_now;
624		802
625	if (fabs (odiff - diff) < MIN_TIMEJUMP)	803	if (fabs (odiff - diff) < MIN_TIMEJUMP)
626	return; /* all is well */	804	return; /* all is well */
627		805
628	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 */
629	}	813	}
630
631	periodics_reschedule (diff - odiff);
632	/* no timer adjustment, as the monotonic clock doesn't jump */
633	}	814	}
634	else	815	else
		816	#endif
635	{	817	{
636	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))
637	{	821	{
638	periodics_reschedule (ev_now - now);	822	periodics_reschedule (EV_A_ rt_now - mn_now);
639		823
640	/* 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 */
641	for (i = 0; i < timercnt; ++i)	825	for (i = 0; i < timercnt; ++i)
642	timers [i]->at += diff;	826	timers [i]->at += diff;
643	}	827	}
644		828
645	now = ev_now;	829	mn_now = rt_now;
646	}	830	}
647	}	831	}
648		832
649	int ev_loop_done;	833	void
		834	ev_ref (EV_P)
		835	{
		836	++activecnt;
		837	}
650		838
		839	void
		840	ev_unref (EV_P)
		841	{
		842	--activecnt;
		843	}
		844
		845	static int loop_done;
		846
		847	void
651	void ev_loop (int flags)	848	ev_loop (EV_P_ int flags)
652	{	849	{
653	double block;	850	double block;
654	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	851	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
655		852
656	do	853	do
657	{	854	{
658	/* queue check watchers (and execute them) */	855	/* queue check watchers (and execute them) */
659	if (preparecnt)	856	if (expect_false (preparecnt))
660	{	857	{
661	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	858	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
662	call_pending ();	859	call_pending (EV_A);
663	}	860	}
664		861
665	/* update fd-related kernel structures */	862	/* update fd-related kernel structures */
666	fd_reify ();	863	fd_reify (EV_A);
667		864
668	/* calculate blocking time */	865	/* calculate blocking time */
669		866
670	/* 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
671	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	{
672	ev_now = ev_time ();	875	rt_now = ev_time ();
		876	mn_now = rt_now;
		877	}
673		878
674	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	879	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
675	block = 0.;	880	block = 0.;
676	else	881	else
677	{	882	{
678	block = MAX_BLOCKTIME;	883	block = MAX_BLOCKTIME;
679		884
680	if (timercnt)	885	if (timercnt)
681	{	886	{
682	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;
683	if (block > to) block = to;	888	if (block > to) block = to;
684	}	889	}
685		890
686	if (periodiccnt)	891	if (periodiccnt)
687	{	892	{
688	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	893	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
689	if (block > to) block = to;	894	if (block > to) block = to;
690	}	895	}
691		896
692	if (block < 0.) block = 0.;	897	if (block < 0.) block = 0.;
693	}	898	}
694		899
695	method_poll (block);	900	method_poll (EV_A_ block);
696		901
697	/* update ev_now, do magic */	902	/* update rt_now, do magic */
698	time_update ();	903	time_update (EV_A);
699		904
700	/* queue pending timers and reschedule them */	905	/* queue pending timers and reschedule them */
701	timers_reify (); /* relative timers called last */	906	timers_reify (EV_A); /* relative timers called last */
702	periodics_reify (); /* absolute timers called first */	907	periodics_reify (EV_A); /* absolute timers called first */
703		908
704	/* queue idle watchers unless io or timers are pending */	909	/* queue idle watchers unless io or timers are pending */
705	if (!pendingcnt)	910	if (!pendingcnt)
706	queue_events ((W *)idles, idlecnt, EV_IDLE);	911	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
707		912
708	/* queue check watchers, to be executed first */	913	/* queue check watchers, to be executed first */
709	if (checkcnt)	914	if (checkcnt)
710	queue_events ((W *)checks, checkcnt, EV_CHECK);	915	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
711		916
712	call_pending ();	917	call_pending (EV_A);
713	}	918	}
714	while (!ev_loop_done);	919	while (activecnt && !loop_done);
715		920
716	if (ev_loop_done != 2)	921	if (loop_done != 2)
717	ev_loop_done = 0;	922	loop_done = 0;
		923	}
		924
		925	void
		926	ev_unloop (EV_P_ int how)
		927	{
		928	loop_done = how;
718	}	929	}
719		930
720	/*****************************************************************************/	931	/*****************************************************************************/
721		932
722	static void	933	inline void
723	wlist_add (WL *head, WL elem)	934	wlist_add (WL *head, WL elem)
724	{	935	{
725	elem->next = *head;	936	elem->next = *head;
726	*head = elem;	937	*head = elem;
727	}	938	}
728		939
729	static void	940	inline void
730	wlist_del (WL *head, WL elem)	941	wlist_del (WL *head, WL elem)
731	{	942	{
732	while (*head)	943	while (*head)
733	{	944	{
734	if (*head == elem)	945	if (*head == elem)
…		…
739		950
740	head = &(*head)->next;	951	head = &(*head)->next;
741	}	952	}
742	}	953	}
743		954
744	static void	955	inline void
745	ev_clear_pending (W w)	956	ev_clear_pending (EV_P_ W w)
746	{	957	{
747	if (w->pending)	958	if (w->pending)
748	{	959	{
749	pendings [w->pending - 1].w = 0;	960	pendings [ABSPRI (w)][w->pending - 1].w = 0;
750	w->pending = 0;	961	w->pending = 0;
751	}	962	}
752	}	963	}
753		964
754	static void	965	inline void
755	ev_start (W w, int active)	966	ev_start (EV_P_ W w, int active)
756	{	967	{
		968	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		969	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		970
757	w->active = active;	971	w->active = active;
		972	ev_ref (EV_A);
758	}	973	}
759		974
760	static void	975	inline void
761	ev_stop (W w)	976	ev_stop (EV_P_ W w)
762	{	977	{
		978	ev_unref (EV_A);
763	w->active = 0;	979	w->active = 0;
764	}	980	}
765		981
766	/*****************************************************************************/	982	/*****************************************************************************/
767		983
768	void	984	void
769	ev_io_start (struct ev_io *w)	985	ev_io_start (EV_P_ struct ev_io *w)
770	{	986	{
771	int fd = w->fd;	987	int fd = w->fd;
772		988
773	if (ev_is_active (w))	989	if (ev_is_active (w))
774	return;	990	return;
775		991
776	assert (("ev_io_start called with negative fd", fd >= 0));	992	assert (("ev_io_start called with negative fd", fd >= 0));
777		993
778	ev_start ((W)w, 1);	994	ev_start (EV_A_ (W)w, 1);
779	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	995	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
780	wlist_add ((WL *)&anfds[fd].head, (WL)w);	996	wlist_add ((WL *)&anfds[fd].head, (WL)w);
781		997
782	fd_change (fd);	998	fd_change (EV_A_ fd);
783	}	999	}
784		1000
785	void	1001	void
786	ev_io_stop (struct ev_io *w)	1002	ev_io_stop (EV_P_ struct ev_io *w)
787	{	1003	{
788	ev_clear_pending ((W)w);	1004	ev_clear_pending (EV_A_ (W)w);
789	if (!ev_is_active (w))	1005	if (!ev_is_active (w))
790	return;	1006	return;
791		1007
792	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1008	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
793	ev_stop ((W)w);	1009	ev_stop (EV_A_ (W)w);
794		1010
795	fd_change (w->fd);	1011	fd_change (EV_A_ w->fd);
796	}	1012	}
797		1013
798	void	1014	void
799	ev_timer_start (struct ev_timer *w)	1015	ev_timer_start (EV_P_ struct ev_timer *w)
800	{	1016	{
801	if (ev_is_active (w))	1017	if (ev_is_active (w))
802	return;	1018	return;
803		1019
804	w->at += now;	1020	w->at += mn_now;
805		1021
806	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1022	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
807		1023
808	ev_start ((W)w, ++timercnt);	1024	ev_start (EV_A_ (W)w, ++timercnt);
809	array_needsize (timers, timermax, timercnt, );	1025	array_needsize (timers, timermax, timercnt, );
810	timers [timercnt - 1] = w;	1026	timers [timercnt - 1] = w;
811	upheap ((WT *)timers, timercnt - 1);	1027	upheap ((WT *)timers, timercnt - 1);
812	}	1028	}
813		1029
814	void	1030	void
815	ev_timer_stop (struct ev_timer *w)	1031	ev_timer_stop (EV_P_ struct ev_timer *w)
816	{	1032	{
817	ev_clear_pending ((W)w);	1033	ev_clear_pending (EV_A_ (W)w);
818	if (!ev_is_active (w))	1034	if (!ev_is_active (w))
819	return;	1035	return;
820		1036
821	if (w->active < timercnt--)	1037	if (w->active < timercnt--)
822	{	1038	{
…		…
824	downheap ((WT *)timers, timercnt, w->active - 1);	1040	downheap ((WT *)timers, timercnt, w->active - 1);
825	}	1041	}
826		1042
827	w->at = w->repeat;	1043	w->at = w->repeat;
828		1044
829	ev_stop ((W)w);	1045	ev_stop (EV_A_ (W)w);
830	}	1046	}
831		1047
832	void	1048	void
833	ev_timer_again (struct ev_timer *w)	1049	ev_timer_again (EV_P_ struct ev_timer *w)
834	{	1050	{
835	if (ev_is_active (w))	1051	if (ev_is_active (w))
836	{	1052	{
837	if (w->repeat)	1053	if (w->repeat)
838	{	1054	{
839	w->at = now + w->repeat;	1055	w->at = mn_now + w->repeat;
840	downheap ((WT *)timers, timercnt, w->active - 1);	1056	downheap ((WT *)timers, timercnt, w->active - 1);
841	}	1057	}
842	else	1058	else
843	ev_timer_stop (w);	1059	ev_timer_stop (EV_A_ w);
844	}	1060	}
845	else if (w->repeat)	1061	else if (w->repeat)
846	ev_timer_start (w);	1062	ev_timer_start (EV_A_ w);
847	}	1063	}
848		1064
849	void	1065	void
850	ev_periodic_start (struct ev_periodic *w)	1066	ev_periodic_start (EV_P_ struct ev_periodic *w)
851	{	1067	{
852	if (ev_is_active (w))	1068	if (ev_is_active (w))
853	return;	1069	return;
854		1070
855	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1071	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
856		1072
857	/* 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 */
858	if (w->interval)	1074	if (w->interval)
859	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1075	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
860		1076
861	ev_start ((W)w, ++periodiccnt);	1077	ev_start (EV_A_ (W)w, ++periodiccnt);
862	array_needsize (periodics, periodicmax, periodiccnt, );	1078	array_needsize (periodics, periodicmax, periodiccnt, );
863	periodics [periodiccnt - 1] = w;	1079	periodics [periodiccnt - 1] = w;
864	upheap ((WT *)periodics, periodiccnt - 1);	1080	upheap ((WT *)periodics, periodiccnt - 1);
865	}	1081	}
866		1082
867	void	1083	void
868	ev_periodic_stop (struct ev_periodic *w)	1084	ev_periodic_stop (EV_P_ struct ev_periodic *w)
869	{	1085	{
870	ev_clear_pending ((W)w);	1086	ev_clear_pending (EV_A_ (W)w);
871	if (!ev_is_active (w))	1087	if (!ev_is_active (w))
872	return;	1088	return;
873		1089
874	if (w->active < periodiccnt--)	1090	if (w->active < periodiccnt--)
875	{	1091	{
876	periodics [w->active - 1] = periodics [periodiccnt];	1092	periodics [w->active - 1] = periodics [periodiccnt];
877	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1093	downheap ((WT *)periodics, periodiccnt, w->active - 1);
878	}	1094	}
879		1095
880	ev_stop ((W)w);	1096	ev_stop (EV_A_ (W)w);
881	}	1097	}
882		1098
		1099	#ifndef SA_RESTART
		1100	# define SA_RESTART 0
		1101	#endif
		1102
883	void	1103	void
884	ev_signal_start (struct ev_signal *w)	1104	ev_signal_start (EV_P_ struct ev_signal *w)
885	{	1105	{
886	if (ev_is_active (w))	1106	if (ev_is_active (w))
887	return;	1107	return;
888		1108
889	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1109	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
890		1110
891	ev_start ((W)w, 1);	1111	ev_start (EV_A_ (W)w, 1);
892	array_needsize (signals, signalmax, w->signum, signals_init);	1112	array_needsize (signals, signalmax, w->signum, signals_init);
893	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1113	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
894		1114
895	if (!w->next)	1115	if (!w->next)
896	{	1116	{
897	struct sigaction sa;	1117	struct sigaction sa;
898	sa.sa_handler = sighandler;	1118	sa.sa_handler = sighandler;
899	sigfillset (&sa.sa_mask);	1119	sigfillset (&sa.sa_mask);
900	sa.sa_flags = 0;	1120	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
901	sigaction (w->signum, &sa, 0);	1121	sigaction (w->signum, &sa, 0);
902	}	1122	}
903	}	1123	}
904		1124
905	void	1125	void
906	ev_signal_stop (struct ev_signal *w)	1126	ev_signal_stop (EV_P_ struct ev_signal *w)
907	{	1127	{
908	ev_clear_pending ((W)w);	1128	ev_clear_pending (EV_A_ (W)w);
909	if (!ev_is_active (w))	1129	if (!ev_is_active (w))
910	return;	1130	return;
911		1131
912	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1132	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
913	ev_stop ((W)w);	1133	ev_stop (EV_A_ (W)w);
914		1134
915	if (!signals [w->signum - 1].head)	1135	if (!signals [w->signum - 1].head)
916	signal (w->signum, SIG_DFL);	1136	signal (w->signum, SIG_DFL);
917	}	1137	}
918		1138
919	void	1139	void
920	ev_idle_start (struct ev_idle *w)	1140	ev_idle_start (EV_P_ struct ev_idle *w)
921	{	1141	{
922	if (ev_is_active (w))	1142	if (ev_is_active (w))
923	return;	1143	return;
924		1144
925	ev_start ((W)w, ++idlecnt);	1145	ev_start (EV_A_ (W)w, ++idlecnt);
926	array_needsize (idles, idlemax, idlecnt, );	1146	array_needsize (idles, idlemax, idlecnt, );
927	idles [idlecnt - 1] = w;	1147	idles [idlecnt - 1] = w;
928	}	1148	}
929		1149
930	void	1150	void
931	ev_idle_stop (struct ev_idle *w)	1151	ev_idle_stop (EV_P_ struct ev_idle *w)
932	{	1152	{
933	ev_clear_pending ((W)w);	1153	ev_clear_pending (EV_A_ (W)w);
934	if (ev_is_active (w))	1154	if (ev_is_active (w))
935	return;	1155	return;
936		1156
937	idles [w->active - 1] = idles [--idlecnt];	1157	idles [w->active - 1] = idles [--idlecnt];
938	ev_stop ((W)w);	1158	ev_stop (EV_A_ (W)w);
939	}	1159	}
940		1160
941	void	1161	void
942	ev_prepare_start (struct ev_prepare *w)	1162	ev_prepare_start (EV_P_ struct ev_prepare *w)
943	{	1163	{
944	if (ev_is_active (w))	1164	if (ev_is_active (w))
945	return;	1165	return;
946		1166
947	ev_start ((W)w, ++preparecnt);	1167	ev_start (EV_A_ (W)w, ++preparecnt);
948	array_needsize (prepares, preparemax, preparecnt, );	1168	array_needsize (prepares, preparemax, preparecnt, );
949	prepares [preparecnt - 1] = w;	1169	prepares [preparecnt - 1] = w;
950	}	1170	}
951		1171
952	void	1172	void
953	ev_prepare_stop (struct ev_prepare *w)	1173	ev_prepare_stop (EV_P_ struct ev_prepare *w)
954	{	1174	{
955	ev_clear_pending ((W)w);	1175	ev_clear_pending (EV_A_ (W)w);
956	if (ev_is_active (w))	1176	if (ev_is_active (w))
957	return;	1177	return;
958		1178
959	prepares [w->active - 1] = prepares [--preparecnt];	1179	prepares [w->active - 1] = prepares [--preparecnt];
960	ev_stop ((W)w);	1180	ev_stop (EV_A_ (W)w);
961	}	1181	}
962		1182
963	void	1183	void
964	ev_check_start (struct ev_check *w)	1184	ev_check_start (EV_P_ struct ev_check *w)
965	{	1185	{
966	if (ev_is_active (w))	1186	if (ev_is_active (w))
967	return;	1187	return;
968		1188
969	ev_start ((W)w, ++checkcnt);	1189	ev_start (EV_A_ (W)w, ++checkcnt);
970	array_needsize (checks, checkmax, checkcnt, );	1190	array_needsize (checks, checkmax, checkcnt, );
971	checks [checkcnt - 1] = w;	1191	checks [checkcnt - 1] = w;
972	}	1192	}
973		1193
974	void	1194	void
975	ev_check_stop (struct ev_check *w)	1195	ev_check_stop (EV_P_ struct ev_check *w)
976	{	1196	{
977	ev_clear_pending ((W)w);	1197	ev_clear_pending (EV_A_ (W)w);
978	if (ev_is_active (w))	1198	if (ev_is_active (w))
979	return;	1199	return;
980		1200
981	checks [w->active - 1] = checks [--checkcnt];	1201	checks [w->active - 1] = checks [--checkcnt];
982	ev_stop ((W)w);	1202	ev_stop (EV_A_ (W)w);
983	}	1203	}
984		1204
985	void	1205	void
986	ev_child_start (struct ev_child *w)	1206	ev_child_start (EV_P_ struct ev_child *w)
987	{	1207	{
988	if (ev_is_active (w))	1208	if (ev_is_active (w))
989	return;	1209	return;
990		1210
991	ev_start ((W)w, 1);	1211	ev_start (EV_A_ (W)w, 1);
992	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1212	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
993	}	1213	}
994		1214
995	void	1215	void
996	ev_child_stop (struct ev_child *w)	1216	ev_child_stop (EV_P_ struct ev_child *w)
997	{	1217	{
998	ev_clear_pending ((W)w);	1218	ev_clear_pending (EV_A_ (W)w);
999	if (ev_is_active (w))	1219	if (ev_is_active (w))
1000	return;	1220	return;
1001		1221
1002	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1222	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1003	ev_stop ((W)w);	1223	ev_stop (EV_A_ (W)w);
1004	}	1224	}
1005		1225
1006	/*****************************************************************************/	1226	/*****************************************************************************/
1007		1227
1008	struct ev_once	1228	struct ev_once
…		…
1012	void (cb)(int revents, void arg);	1232	void (cb)(int revents, void arg);
1013	void *arg;	1233	void *arg;
1014	};	1234	};
1015		1235
1016	static void	1236	static void
1017	once_cb (struct ev_once *once, int revents)	1237	once_cb (EV_P_ struct ev_once *once, int revents)
1018	{	1238	{
1019	void (cb)(int revents, void arg) = once->cb;	1239	void (cb)(int revents, void arg) = once->cb;
1020	void *arg = once->arg;	1240	void *arg = once->arg;
1021		1241
1022	ev_io_stop (&once->io);	1242	ev_io_stop (EV_A_ &once->io);
1023	ev_timer_stop (&once->to);	1243	ev_timer_stop (EV_A_ &once->to);
1024	free (once);	1244	free (once);
1025		1245
1026	cb (revents, arg);	1246	cb (revents, arg);
1027	}	1247	}
1028		1248
1029	static void	1249	static void
1030	once_cb_io (struct ev_io *w, int revents)	1250	once_cb_io (EV_P_ struct ev_io *w, int revents)
1031	{	1251	{
1032	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);
1033	}	1253	}
1034		1254
1035	static void	1255	static void
1036	once_cb_to (struct ev_timer *w, int revents)	1256	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1037	{	1257	{
1038	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);
1039	}	1259	}
1040		1260
1041	void	1261	void
1042	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)
1043	{	1263	{
1044	struct ev_once *once = malloc (sizeof (struct ev_once));	1264	struct ev_once *once = malloc (sizeof (struct ev_once));
1045		1265
1046	if (!once)	1266	if (!once)
1047	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1267	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
…		…
1052		1272
1053	ev_watcher_init (&once->io, once_cb_io);	1273	ev_watcher_init (&once->io, once_cb_io);
1054	if (fd >= 0)	1274	if (fd >= 0)
1055	{	1275	{
1056	ev_io_set (&once->io, fd, events);	1276	ev_io_set (&once->io, fd, events);
1057	ev_io_start (&once->io);	1277	ev_io_start (EV_A_ &once->io);
1058	}	1278	}
1059		1279
1060	ev_watcher_init (&once->to, once_cb_to);	1280	ev_watcher_init (&once->to, once_cb_to);
1061	if (timeout >= 0.)	1281	if (timeout >= 0.)
1062	{	1282	{
1063	ev_timer_set (&once->to, timeout, 0.);	1283	ev_timer_set (&once->to, timeout, 0.);
1064	ev_timer_start (&once->to);	1284	ev_timer_start (EV_A_ &once->to);
1065	}	1285	}
1066	}	1286	}
1067	}	1287	}
1068		1288
1069	/*****************************************************************************/	1289	/*****************************************************************************/

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Comparing libev/ev.c (file contents): Revision 1.38 by root, Thu Nov 1 15:21:13 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 1.38 by root, Thu Nov 1 15:21:13 2007 UTC vs.
Revision 1.52 by root, Sat Nov 3 22:10:39 2007 UTC