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

Comparing libev/ev.c (file contents):
Revision 1.42 by root, Fri Nov 2 20:05:05 2007 UTC vs.
Revision 1.54 by root, Sun Nov 4 00:24:16 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
51	/**/	53	/**/
52		54
…		…
56		58
57	#ifndef EV_USE_SELECT	59	#ifndef EV_USE_SELECT
58	# define EV_USE_SELECT 1	60	# define EV_USE_SELECT 1
59	#endif	61	#endif
60		62
61	#ifndef EV_USE_POLL	63	#ifndef EV_USEV_POLL
62	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */
63	#endif	65	#endif
64		66
65	#ifndef EV_USE_EPOLL	67	#ifndef EV_USE_EPOLL
66	# define EV_USE_EPOLL 0	68	# define EV_USE_EPOLL 0
		69	#endif
		70
		71	#ifndef EV_USE_KQUEUE
		72	# define EV_USE_KQUEUE 0
67	#endif	73	#endif
68		74
69	#ifndef EV_USE_REALTIME	75	#ifndef EV_USE_REALTIME
70	# define EV_USE_REALTIME 1	76	# define EV_USE_REALTIME 1
71	#endif	77	#endif
…		…
107		113
108	typedef struct ev_watcher *W;	114	typedef struct ev_watcher *W;
109	typedef struct ev_watcher_list *WL;	115	typedef struct ev_watcher_list *WL;
110	typedef struct ev_watcher_time *WT;	116	typedef struct ev_watcher_time *WT;
111		117
112	static ev_tstamp now_floor, now, diff; /* monotonic clock */	118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
113	ev_tstamp ev_now;
114	int ev_method;
115
116	static int have_monotonic; /* runtime */
117
118	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
119	static void (*method_modify)(int fd, int oev, int nev);
120	static void (*method_poll)(ev_tstamp timeout);
121		119
122	/*****************************************************************************/	120	/*****************************************************************************/
123		121
124	ev_tstamp	122	typedef struct
		123	{
		124	struct ev_watcher_list *head;
		125	unsigned char events;
		126	unsigned char reify;
		127	} ANFD;
		128
		129	typedef struct
		130	{
		131	W w;
		132	int events;
		133	} ANPENDING;
		134
		135	#ifdef EV_MULTIPLICITY
		136
		137	struct ev_loop
		138	{
		139	# define VAR(name,decl) decl;
		140	# include "ev_vars.h"
		141	};
		142	# undef VAR
		143	# include "ev_wrap.h"
		144
		145	#else
		146
		147	# define VAR(name,decl) static decl;
		148	# include "ev_vars.h"
		149	# undef VAR
		150
		151	#endif
		152
		153	/*****************************************************************************/
		154
		155	inline ev_tstamp
125	ev_time (void)	156	ev_time (void)
126	{	157	{
127	#if EV_USE_REALTIME	158	#if EV_USE_REALTIME
128	struct timespec ts;	159	struct timespec ts;
129	clock_gettime (CLOCK_REALTIME, &ts);	160	clock_gettime (CLOCK_REALTIME, &ts);
…		…
133	gettimeofday (&tv, 0);	164	gettimeofday (&tv, 0);
134	return tv.tv_sec + tv.tv_usec * 1e-6;	165	return tv.tv_sec + tv.tv_usec * 1e-6;
135	#endif	166	#endif
136	}	167	}
137		168
138	static ev_tstamp	169	inline ev_tstamp
139	get_clock (void)	170	get_clock (void)
140	{	171	{
141	#if EV_USE_MONOTONIC	172	#if EV_USE_MONOTONIC
142	if (expect_true (have_monotonic))	173	if (expect_true (have_monotonic))
143	{	174	{
…		…
146	return ts.tv_sec + ts.tv_nsec * 1e-9;	177	return ts.tv_sec + ts.tv_nsec * 1e-9;
147	}	178	}
148	#endif	179	#endif
149		180
150	return ev_time ();	181	return ev_time ();
		182	}
		183
		184	ev_tstamp
		185	ev_now (EV_P)
		186	{
		187	return rt_now;
151	}	188	}
152		189
153	#define array_roundsize(base,n) ((n) \| 4 & ~3)	190	#define array_roundsize(base,n) ((n) \| 4 & ~3)
154		191
155	#define array_needsize(base,cur,cnt,init) \	192	#define array_needsize(base,cur,cnt,init) \
…		…
167	cur = newcnt; \	204	cur = newcnt; \
168	}	205	}
169		206
170	/*****************************************************************************/	207	/*****************************************************************************/
171		208
172	typedef struct
173	{
174	struct ev_io *head;
175	unsigned char events;
176	unsigned char reify;
177	} ANFD;
178
179	static ANFD *anfds;
180	static int anfdmax;
181
182	static void	209	static void
183	anfds_init (ANFD *base, int count)	210	anfds_init (ANFD *base, int count)
184	{	211	{
185	while (count--)	212	while (count--)
186	{	213	{
…		…
190		217
191	++base;	218	++base;
192	}	219	}
193	}	220	}
194		221
195	typedef struct
196	{
197	W w;
198	int events;
199	} ANPENDING;
200
201	static ANPENDING *pendings [NUMPRI];
202	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
203
204	static void	222	static void
205	event (W w, int events)	223	event (EV_P_ W w, int events)
206	{	224	{
207	if (w->pending)	225	if (w->pending)
208	{	226	{
209	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	227	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
210	return;	228	return;
…		…
215	pendings [ABSPRI (w)][w->pending - 1].w = w;	233	pendings [ABSPRI (w)][w->pending - 1].w = w;
216	pendings [ABSPRI (w)][w->pending - 1].events = events;	234	pendings [ABSPRI (w)][w->pending - 1].events = events;
217	}	235	}
218		236
219	static void	237	static void
220	queue_events (W *events, int eventcnt, int type)	238	queue_events (EV_P_ W *events, int eventcnt, int type)
221	{	239	{
222	int i;	240	int i;
223		241
224	for (i = 0; i < eventcnt; ++i)	242	for (i = 0; i < eventcnt; ++i)
225	event (events [i], type);	243	event (EV_A_ events [i], type);
226	}	244	}
227		245
228	static void	246	static void
229	fd_event (int fd, int events)	247	fd_event (EV_P_ int fd, int events)
230	{	248	{
231	ANFD *anfd = anfds + fd;	249	ANFD *anfd = anfds + fd;
232	struct ev_io *w;	250	struct ev_io *w;
233		251
234	for (w = anfd->head; w; w = w->next)	252	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
235	{	253	{
236	int ev = w->events & events;	254	int ev = w->events & events;
237		255
238	if (ev)	256	if (ev)
239	event ((W)w, ev);	257	event (EV_A_ (W)w, ev);
240	}	258	}
241	}	259	}
242		260
243	/*****************************************************************************/	261	/*****************************************************************************/
244		262
245	static int *fdchanges;
246	static int fdchangemax, fdchangecnt;
247
248	static void	263	static void
249	fd_reify (void)	264	fd_reify (EV_P)
250	{	265	{
251	int i;	266	int i;
252		267
253	for (i = 0; i < fdchangecnt; ++i)	268	for (i = 0; i < fdchangecnt; ++i)
254	{	269	{
…		…
256	ANFD *anfd = anfds + fd;	271	ANFD *anfd = anfds + fd;
257	struct ev_io *w;	272	struct ev_io *w;
258		273
259	int events = 0;	274	int events = 0;
260		275
261	for (w = anfd->head; w; w = w->next)	276	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
262	events \|= w->events;	277	events \|= w->events;
263		278
264	anfd->reify = 0;	279	anfd->reify = 0;
265		280
266	if (anfd->events != events)	281	if (anfd->events != events)
267	{	282	{
268	method_modify (fd, anfd->events, events);	283	method_modify (EV_A_ fd, anfd->events, events);
269	anfd->events = events;	284	anfd->events = events;
270	}	285	}
271	}	286	}
272		287
273	fdchangecnt = 0;	288	fdchangecnt = 0;
274	}	289	}
275		290
276	static void	291	static void
277	fd_change (int fd)	292	fd_change (EV_P_ int fd)
278	{	293	{
279	if (anfds [fd].reify \|\| fdchangecnt < 0)	294	if (anfds [fd].reify \|\| fdchangecnt < 0)
280	return;	295	return;
281		296
282	anfds [fd].reify = 1;	297	anfds [fd].reify = 1;
…		…
285	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
286	fdchanges [fdchangecnt - 1] = fd;	301	fdchanges [fdchangecnt - 1] = fd;
287	}	302	}
288		303
289	static void	304	static void
290	fd_kill (int fd)	305	fd_kill (EV_P_ int fd)
291	{	306	{
292	struct ev_io *w;	307	struct ev_io *w;
293		308
294	printf ("killing fd %d\n", fd);//D
295	while ((w = anfds [fd].head))	309	while ((w = (struct ev_io *)anfds [fd].head))
296	{	310	{
297	ev_io_stop (w);	311	ev_io_stop (EV_A_ w);
298	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	312	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
299	}	313	}
300	}	314	}
301		315
302	/* called on EBADF to verify fds */	316	/* called on EBADF to verify fds */
303	static void	317	static void
304	fd_ebadf (void)	318	fd_ebadf (EV_P)
305	{	319	{
306	int fd;	320	int fd;
307		321
308	for (fd = 0; fd < anfdmax; ++fd)	322	for (fd = 0; fd < anfdmax; ++fd)
309	if (anfds [fd].events)	323	if (anfds [fd].events)
310	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
311	fd_kill (fd);	325	fd_kill (EV_A_ fd);
312	}	326	}
313		327
314	/* called on ENOMEM in select/poll to kill some fds and retry */	328	/* called on ENOMEM in select/poll to kill some fds and retry */
315	static void	329	static void
316	fd_enomem (void)	330	fd_enomem (EV_P)
317	{	331	{
318	int fd = anfdmax;	332	int fd = anfdmax;
319		333
320	while (fd--)	334	while (fd--)
321	if (anfds [fd].events)	335	if (anfds [fd].events)
322	{	336	{
323	close (fd);	337	close (fd);
324	fd_kill (fd);	338	fd_kill (EV_A_ fd);
325	return;	339	return;
326	}	340	}
327	}	341	}
328		342
329	/*****************************************************************************/	343	/*****************************************************************************/
330		344
331	static struct ev_timer **timers;
332	static int timermax, timercnt;
333
334	static struct ev_periodic **periodics;
335	static int periodicmax, periodiccnt;
336
337	static void	345	static void
338	upheap (WT *timers, int k)	346	upheap (WT *heap, int k)
339	{	347	{
340	WT w = timers [k];	348	WT w = heap [k];
341		349
342	while (k && timers [k >> 1]->at > w->at)	350	while (k && heap [k >> 1]->at > w->at)
343	{	351	{
344	timers [k] = timers [k >> 1];	352	heap [k] = heap [k >> 1];
345	timers [k]->active = k + 1;	353	heap [k]->active = k + 1;
346	k >>= 1;	354	k >>= 1;
347	}	355	}
348		356
349	timers [k] = w;	357	heap [k] = w;
350	timers [k]->active = k + 1;	358	heap [k]->active = k + 1;
351		359
352	}	360	}
353		361
354	static void	362	static void
355	downheap (WT *timers, int N, int k)	363	downheap (WT *heap, int N, int k)
356	{	364	{
357	WT w = timers [k];	365	WT w = heap [k];
358		366
359	while (k < (N >> 1))	367	while (k < (N >> 1))
360	{	368	{
361	int j = k << 1;	369	int j = k << 1;
362		370
363	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	371	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
364	++j;	372	++j;
365		373
366	if (w->at <= timers [j]->at)	374	if (w->at <= heap [j]->at)
367	break;	375	break;
368		376
369	timers [k] = timers [j];	377	heap [k] = heap [j];
370	timers [k]->active = k + 1;	378	heap [k]->active = k + 1;
371	k = j;	379	k = j;
372	}	380	}
373		381
374	timers [k] = w;	382	heap [k] = w;
375	timers [k]->active = k + 1;	383	heap [k]->active = k + 1;
376	}	384	}
377		385
378	/*****************************************************************************/	386	/*****************************************************************************/
379		387
380	typedef struct	388	typedef struct
381	{	389	{
382	struct ev_signal *head;	390	struct ev_watcher_list *head;
383	sig_atomic_t volatile gotsig;	391	sig_atomic_t volatile gotsig;
384	} ANSIG;	392	} ANSIG;
385		393
386	static ANSIG *signals;	394	static ANSIG *signals;
387	static int signalmax;	395	static int signalmax;
388		396
389	static int sigpipe [2];	397	static int sigpipe [2];
390	static sig_atomic_t volatile gotsig;	398	static sig_atomic_t volatile gotsig;
391	static struct ev_io sigev;
392		399
393	static void	400	static void
394	signals_init (ANSIG *base, int count)	401	signals_init (ANSIG *base, int count)
395	{	402	{
396	while (count--)	403	while (count--)
…		…
407	{	414	{
408	signals [signum - 1].gotsig = 1;	415	signals [signum - 1].gotsig = 1;
409		416
410	if (!gotsig)	417	if (!gotsig)
411	{	418	{
		419	int old_errno = errno;
412	gotsig = 1;	420	gotsig = 1;
413	write (sigpipe [1], &signum, 1);	421	write (sigpipe [1], &signum, 1);
		422	errno = old_errno;
414	}	423	}
415	}	424	}
416		425
417	static void	426	static void
418	sigcb (struct ev_io *iow, int revents)	427	sigcb (EV_P_ struct ev_io *iow, int revents)
419	{	428	{
420	struct ev_signal *w;	429	struct ev_watcher_list *w;
421	int signum;	430	int signum;
422		431
423	read (sigpipe [0], &revents, 1);	432	read (sigpipe [0], &revents, 1);
424	gotsig = 0;	433	gotsig = 0;
425		434
…		…
427	if (signals [signum].gotsig)	436	if (signals [signum].gotsig)
428	{	437	{
429	signals [signum].gotsig = 0;	438	signals [signum].gotsig = 0;
430		439
431	for (w = signals [signum].head; w; w = w->next)	440	for (w = signals [signum].head; w; w = w->next)
432	event ((W)w, EV_SIGNAL);	441	event (EV_A_ (W)w, EV_SIGNAL);
433	}	442	}
434	}	443	}
435		444
436	static void	445	static void
437	siginit (void)	446	siginit (EV_P)
438	{	447	{
		448	#ifndef WIN32
439	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	449	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
440	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	450	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
441		451
442	/* rather than sort out wether we really need nb, set it */	452	/* rather than sort out wether we really need nb, set it */
443	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	453	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
444	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	454	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		455	#endif
445		456
446	ev_io_set (&sigev, sigpipe [0], EV_READ);	457	ev_io_set (&sigev, sigpipe [0], EV_READ);
447	ev_io_start (&sigev);	458	ev_io_start (EV_A_ &sigev);
		459	ev_unref (EV_A); /* child watcher should not keep loop alive */
448	}	460	}
449		461
450	/*****************************************************************************/	462	/*****************************************************************************/
451		463
452	static struct ev_idle **idles;	464	#ifndef WIN32
453	static int idlemax, idlecnt;
454
455	static struct ev_prepare **prepares;
456	static int preparemax, preparecnt;
457
458	static struct ev_check **checks;
459	static int checkmax, checkcnt;
460
461	/*****************************************************************************/
462
463	static struct ev_child *childs [PID_HASHSIZE];
464	static struct ev_signal childev;
465		465
466	#ifndef WCONTINUED	466	#ifndef WCONTINUED
467	# define WCONTINUED 0	467	# define WCONTINUED 0
468	#endif	468	#endif
469		469
470	static void	470	static void
471	childcb (struct ev_signal *sw, int revents)	471	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
472	{	472	{
473	struct ev_child *w;	473	struct ev_child *w;
		474
		475	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		476	if (w->pid == pid \|\| !w->pid)
		477	{
		478	w->priority = sw->priority; /* need to do it now */
		479	w->rpid = pid;
		480	w->rstatus = status;
		481	event (EV_A_ (W)w, EV_CHILD);
		482	}
		483	}
		484
		485	static void
		486	childcb (EV_P_ struct ev_signal *sw, int revents)
		487	{
474	int pid, status;	488	int pid, status;
475		489
476	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	490	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
477	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	491	{
478	if (w->pid == pid \|\| !w->pid)	492	/* make sure we are called again until all childs have been reaped */
479	{	493	event (EV_A_ (W)sw, EV_SIGNAL);
480	w->status = status;	494
481	event ((W)w, EV_CHILD);	495	child_reap (EV_A_ sw, pid, pid, status);
482	}	496	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		497	}
483	}	498	}
		499
		500	#endif
484		501
485	/*****************************************************************************/	502	/*****************************************************************************/
486		503
		504	#if EV_USE_KQUEUE
		505	# include "ev_kqueue.c"
		506	#endif
487	#if EV_USE_EPOLL	507	#if EV_USE_EPOLL
488	# include "ev_epoll.c"	508	# include "ev_epoll.c"
489	#endif	509	#endif
490	#if EV_USE_POLL	510	#if EV_USEV_POLL
491	# include "ev_poll.c"	511	# include "ev_poll.c"
492	#endif	512	#endif
493	#if EV_USE_SELECT	513	#if EV_USE_SELECT
494	# include "ev_select.c"	514	# include "ev_select.c"
495	#endif	515	#endif
…		…
504	ev_version_minor (void)	524	ev_version_minor (void)
505	{	525	{
506	return EV_VERSION_MINOR;	526	return EV_VERSION_MINOR;
507	}	527	}
508		528
509	/* return true if we are running with elevated privileges and ignore env variables */	529	/* return true if we are running with elevated privileges and should ignore env variables */
510	static int	530	static int
511	enable_secure ()	531	enable_secure (void)
512	{	532	{
		533	#ifdef WIN32
		534	return 0;
		535	#else
513	return getuid () != geteuid ()	536	return getuid () != geteuid ()
514	\|\| getgid () != getegid ();	537	\|\| getgid () != getegid ();
		538	#endif
515	}	539	}
516		540
517	int ev_init (int methods)	541	int
		542	ev_method (EV_P)
518	{	543	{
		544	return method;
		545	}
		546
		547	static void
		548	loop_init (EV_P_ int methods)
		549	{
519	if (!ev_method)	550	if (!method)
520	{	551	{
521	#if EV_USE_MONOTONIC	552	#if EV_USE_MONOTONIC
522	{	553	{
523	struct timespec ts;	554	struct timespec ts;
524	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	555	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
525	have_monotonic = 1;	556	have_monotonic = 1;
526	}	557	}
527	#endif	558	#endif
528		559
529	ev_now = ev_time ();	560	rt_now = ev_time ();
530	now = get_clock ();	561	mn_now = get_clock ();
531	now_floor = now;	562	now_floor = mn_now;
532	diff = ev_now - now;	563	rtmn_diff = rt_now - mn_now;
533		564
534	if (pipe (sigpipe))	565	if (pipe (sigpipe))
535	return 0;	566	return 0;
536		567
537	if (methods == EVMETHOD_AUTO)	568	if (methods == EVMETHOD_AUTO)
538	if (!enable_secure () && getenv ("LIBEV_METHODS"))	569	if (!enable_secure () && getenv ("LIBmethodS"))
539	methods = atoi (getenv ("LIBEV_METHODS"));	570	methods = atoi (getenv ("LIBmethodS"));
540	else	571	else
541	methods = EVMETHOD_ANY;	572	methods = EVMETHOD_ANY;
542		573
543	ev_method = 0;	574	method = 0;
		575	#if EV_USE_KQUEUE
		576	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		577	#endif
544	#if EV_USE_EPOLL	578	#if EV_USE_EPOLL
545	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	579	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
546	#endif	580	#endif
547	#if EV_USE_POLL	581	#if EV_USEV_POLL
548	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	582	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
549	#endif	583	#endif
550	#if EV_USE_SELECT	584	#if EV_USE_SELECT
551	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	585	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
552	#endif	586	#endif
553		587
554	if (ev_method)	588	if (method)
555	{	589	{
556	ev_watcher_init (&sigev, sigcb);	590	ev_watcher_init (&sigev, sigcb);
		591	ev_set_priority (&sigev, EV_MAXPRI);
557	siginit ();	592	siginit (EV_A);
558		593
		594	#ifndef WIN32
559	ev_signal_init (&childev, childcb, SIGCHLD);	595	ev_signal_init (&childev, childcb, SIGCHLD);
		596	ev_set_priority (&childev, EV_MAXPRI);
560	ev_signal_start (&childev);	597	ev_signal_start (EV_A_ &childev);
		598	ev_unref (EV_A); /* child watcher should not keep loop alive */
		599	#endif
561	}	600	}
562	}	601	}
563		602
564	return ev_method;	603	return method;
565	}	604	}
		605
		606	#ifdef EV_MULTIPLICITY
		607
		608	struct ev_loop *
		609	ev_loop_new (int methods)
		610	{
		611	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));
		612
		613	loop_init (EV_A_ methods);
		614
		615	return loop;
		616	}
		617
		618	void
		619	ev_loop_delete (EV_P)
		620	{
		621	/TODO/
		622	free (loop);
		623	}
		624
		625	#else
		626
		627	int
		628	ev_init (int methods)
		629	{
		630	loop_init ();
		631	}
		632
		633	#endif
566		634
567	/*****************************************************************************/	635	/*****************************************************************************/
568		636
569	void	637	void
570	ev_fork_prepare (void)	638	ev_fork_prepare (void)
…		…
579	}	647	}
580		648
581	void	649	void
582	ev_fork_child (void)	650	ev_fork_child (void)
583	{	651	{
		652	/TODO/
		653	#if !EV_MULTIPLICITY
584	#if EV_USE_EPOLL	654	#if EV_USE_EPOLL
585	if (ev_method == EVMETHOD_EPOLL)	655	if (method == EVMETHOD_EPOLL)
586	epoll_postfork_child ();	656	epoll_postfork_child (EV_A);
587	#endif	657	#endif
588		658
589	ev_io_stop (&sigev);	659	ev_io_stop (EV_A_ &sigev);
590	close (sigpipe [0]);	660	close (sigpipe [0]);
591	close (sigpipe [1]);	661	close (sigpipe [1]);
592	pipe (sigpipe);	662	pipe (sigpipe);
593	siginit ();	663	siginit (EV_A);
		664	#endif
594	}	665	}
595		666
596	/*****************************************************************************/	667	/*****************************************************************************/
597		668
598	static void	669	static void
599	call_pending (void)	670	call_pending (EV_P)
600	{	671	{
601	int pri;	672	int pri;
602		673
603	for (pri = NUMPRI; pri--; )	674	for (pri = NUMPRI; pri--; )
604	while (pendingcnt [pri])	675	while (pendingcnt [pri])
…		…
606	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	677	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
607		678
608	if (p->w)	679	if (p->w)
609	{	680	{
610	p->w->pending = 0;	681	p->w->pending = 0;
611	p->w->cb (p->w, p->events);	682	p->w->cb (EV_A_ p->w, p->events);
612	}	683	}
613	}	684	}
614	}	685	}
615		686
616	static void	687	static void
617	timers_reify (void)	688	timers_reify (EV_P)
618	{	689	{
619	while (timercnt && timers [0]->at <= now)	690	while (timercnt && timers [0]->at <= mn_now)
620	{	691	{
621	struct ev_timer *w = timers [0];	692	struct ev_timer *w = timers [0];
622		693
623	/* first reschedule or stop timer */	694	/* first reschedule or stop timer */
624	if (w->repeat)	695	if (w->repeat)
625	{	696	{
626	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	697	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
627	w->at = now + w->repeat;	698	w->at = mn_now + w->repeat;
628	downheap ((WT *)timers, timercnt, 0);	699	downheap ((WT *)timers, timercnt, 0);
629	}	700	}
630	else	701	else
631	ev_timer_stop (w); /* nonrepeating: stop timer */	702	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
632		703
633	event ((W)w, EV_TIMEOUT);	704	event (EV_A_ (W)w, EV_TIMEOUT);
634	}	705	}
635	}	706	}
636		707
637	static void	708	static void
638	periodics_reify (void)	709	periodics_reify (EV_P)
639	{	710	{
640	while (periodiccnt && periodics [0]->at <= ev_now)	711	while (periodiccnt && periodics [0]->at <= rt_now)
641	{	712	{
642	struct ev_periodic *w = periodics [0];	713	struct ev_periodic *w = periodics [0];
643		714
644	/* first reschedule or stop timer */	715	/* first reschedule or stop timer */
645	if (w->interval)	716	if (w->interval)
646	{	717	{
647	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	718	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;
648	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	719	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
649	downheap ((WT *)periodics, periodiccnt, 0);	720	downheap ((WT *)periodics, periodiccnt, 0);
650	}	721	}
651	else	722	else
652	ev_periodic_stop (w); /* nonrepeating: stop timer */	723	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
653		724
654	event ((W)w, EV_PERIODIC);	725	event (EV_A_ (W)w, EV_PERIODIC);
655	}	726	}
656	}	727	}
657		728
658	static void	729	static void
659	periodics_reschedule (ev_tstamp diff)	730	periodics_reschedule (EV_P)
660	{	731	{
661	int i;	732	int i;
662		733
663	/* adjust periodics after time jump */	734	/* adjust periodics after time jump */
664	for (i = 0; i < periodiccnt; ++i)	735	for (i = 0; i < periodiccnt; ++i)
665	{	736	{
666	struct ev_periodic *w = periodics [i];	737	struct ev_periodic *w = periodics [i];
667		738
668	if (w->interval)	739	if (w->interval)
669	{	740	{
670	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	741	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
671		742
672	if (fabs (diff) >= 1e-4)	743	if (fabs (diff) >= 1e-4)
673	{	744	{
674	ev_periodic_stop (w);	745	ev_periodic_stop (EV_A_ w);
675	ev_periodic_start (w);	746	ev_periodic_start (EV_A_ w);
676		747
677	i = 0; /* restart loop, inefficient, but time jumps should be rare */	748	i = 0; /* restart loop, inefficient, but time jumps should be rare */
678	}	749	}
679	}	750	}
680	}	751	}
681	}	752	}
682		753
683	static int	754	inline int
684	time_update_monotonic (void)	755	time_update_monotonic (EV_P)
685	{	756	{
686	now = get_clock ();	757	mn_now = get_clock ();
687		758
688	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	759	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
689	{	760	{
690	ev_now = now + diff;	761	rt_now = rtmn_diff + mn_now;
691	return 0;	762	return 0;
692	}	763	}
693	else	764	else
694	{	765	{
695	now_floor = now;	766	now_floor = mn_now;
696	ev_now = ev_time ();	767	rt_now = ev_time ();
697	return 1;	768	return 1;
698	}	769	}
699	}	770	}
700		771
701	static void	772	static void
702	time_update (void)	773	time_update (EV_P)
703	{	774	{
704	int i;	775	int i;
705		776
706	#if EV_USE_MONOTONIC	777	#if EV_USE_MONOTONIC
707	if (expect_true (have_monotonic))	778	if (expect_true (have_monotonic))
708	{	779	{
709	if (time_update_monotonic ())	780	if (time_update_monotonic (EV_A))
710	{	781	{
711	ev_tstamp odiff = diff;	782	ev_tstamp odiff = rtmn_diff;
712		783
713	for (i = 4; --i; ) /* loop a few times, before making important decisions */	784	for (i = 4; --i; ) /* loop a few times, before making important decisions */
714	{	785	{
715	diff = ev_now - now;	786	rtmn_diff = rt_now - mn_now;
716		787
717	if (fabs (odiff - diff) < MIN_TIMEJUMP)	788	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
718	return; /* all is well */	789	return; /* all is well */
719		790
720	ev_now = ev_time ();	791	rt_now = ev_time ();
721	now = get_clock ();	792	mn_now = get_clock ();
722	now_floor = now;	793	now_floor = mn_now;
723	}	794	}
724		795
725	periodics_reschedule (diff - odiff);	796	periodics_reschedule (EV_A);
726	/* no timer adjustment, as the monotonic clock doesn't jump */	797	/* no timer adjustment, as the monotonic clock doesn't jump */
		798	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
727	}	799	}
728	}	800	}
729	else	801	else
730	#endif	802	#endif
731	{	803	{
732	ev_now = ev_time ();	804	rt_now = ev_time ();
733		805
734	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	806	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
735	{	807	{
736	periodics_reschedule (ev_now - now);	808	periodics_reschedule (EV_A);
737		809
738	/* adjust timers. this is easy, as the offset is the same for all */	810	/* adjust timers. this is easy, as the offset is the same for all */
739	for (i = 0; i < timercnt; ++i)	811	for (i = 0; i < timercnt; ++i)
740	timers [i]->at += diff;	812	timers [i]->at += rt_now - mn_now;
741	}	813	}
742		814
743	now = ev_now;	815	mn_now = rt_now;
744	}	816	}
745	}	817	}
746		818
747	int ev_loop_done;	819	void
		820	ev_ref (EV_P)
		821	{
		822	++activecnt;
		823	}
748		824
		825	void
		826	ev_unref (EV_P)
		827	{
		828	--activecnt;
		829	}
		830
		831	static int loop_done;
		832
		833	void
749	void ev_loop (int flags)	834	ev_loop (EV_P_ int flags)
750	{	835	{
751	double block;	836	double block;
752	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	837	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
753		838
754	do	839	do
755	{	840	{
756	/* queue check watchers (and execute them) */	841	/* queue check watchers (and execute them) */
757	if (expect_false (preparecnt))	842	if (expect_false (preparecnt))
758	{	843	{
759	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	844	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
760	call_pending ();	845	call_pending (EV_A);
761	}	846	}
762		847
763	/* update fd-related kernel structures */	848	/* update fd-related kernel structures */
764	fd_reify ();	849	fd_reify (EV_A);
765		850
766	/* calculate blocking time */	851	/* calculate blocking time */
767		852
768	/* we only need this for !monotonic clockor timers, but as we basically	853	/* we only need this for !monotonic clockor timers, but as we basically
769	always have timers, we just calculate it always */	854	always have timers, we just calculate it always */
770	#if EV_USE_MONOTONIC	855	#if EV_USE_MONOTONIC
771	if (expect_true (have_monotonic))	856	if (expect_true (have_monotonic))
772	time_update_monotonic ();	857	time_update_monotonic (EV_A);
773	else	858	else
774	#endif	859	#endif
775	{	860	{
776	ev_now = ev_time ();	861	rt_now = ev_time ();
777	now = ev_now;	862	mn_now = rt_now;
778	}	863	}
779		864
780	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	865	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
781	block = 0.;	866	block = 0.;
782	else	867	else
783	{	868	{
784	block = MAX_BLOCKTIME;	869	block = MAX_BLOCKTIME;
785		870
786	if (timercnt)	871	if (timercnt)
787	{	872	{
788	ev_tstamp to = timers [0]->at - now + method_fudge;	873	ev_tstamp to = timers [0]->at - mn_now + method_fudge;
789	if (block > to) block = to;	874	if (block > to) block = to;
790	}	875	}
791		876
792	if (periodiccnt)	877	if (periodiccnt)
793	{	878	{
794	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	879	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
795	if (block > to) block = to;	880	if (block > to) block = to;
796	}	881	}
797		882
798	if (block < 0.) block = 0.;	883	if (block < 0.) block = 0.;
799	}	884	}
800		885
801	method_poll (block);	886	method_poll (EV_A_ block);
802		887
803	/* update ev_now, do magic */	888	/* update rt_now, do magic */
804	time_update ();	889	time_update (EV_A);
805		890
806	/* queue pending timers and reschedule them */	891	/* queue pending timers and reschedule them */
807	timers_reify (); /* relative timers called last */	892	timers_reify (EV_A); /* relative timers called last */
808	periodics_reify (); /* absolute timers called first */	893	periodics_reify (EV_A); /* absolute timers called first */
809		894
810	/* queue idle watchers unless io or timers are pending */	895	/* queue idle watchers unless io or timers are pending */
811	if (!pendingcnt)	896	if (!pendingcnt)
812	queue_events ((W *)idles, idlecnt, EV_IDLE);	897	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
813		898
814	/* queue check watchers, to be executed first */	899	/* queue check watchers, to be executed first */
815	if (checkcnt)	900	if (checkcnt)
816	queue_events ((W *)checks, checkcnt, EV_CHECK);	901	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
817		902
818	call_pending ();	903	call_pending (EV_A);
819	}	904	}
820	while (!ev_loop_done);	905	while (activecnt && !loop_done);
821		906
822	if (ev_loop_done != 2)	907	if (loop_done != 2)
823	ev_loop_done = 0;	908	loop_done = 0;
		909	}
		910
		911	void
		912	ev_unloop (EV_P_ int how)
		913	{
		914	loop_done = how;
824	}	915	}
825		916
826	/*****************************************************************************/	917	/*****************************************************************************/
827		918
828	static void	919	inline void
829	wlist_add (WL *head, WL elem)	920	wlist_add (WL *head, WL elem)
830	{	921	{
831	elem->next = *head;	922	elem->next = *head;
832	*head = elem;	923	*head = elem;
833	}	924	}
834		925
835	static void	926	inline void
836	wlist_del (WL *head, WL elem)	927	wlist_del (WL *head, WL elem)
837	{	928	{
838	while (*head)	929	while (*head)
839	{	930	{
840	if (*head == elem)	931	if (*head == elem)
…		…
845		936
846	head = &(*head)->next;	937	head = &(*head)->next;
847	}	938	}
848	}	939	}
849		940
850	static void	941	inline void
851	ev_clear_pending (W w)	942	ev_clear_pending (EV_P_ W w)
852	{	943	{
853	if (w->pending)	944	if (w->pending)
854	{	945	{
855	pendings [ABSPRI (w)][w->pending - 1].w = 0;	946	pendings [ABSPRI (w)][w->pending - 1].w = 0;
856	w->pending = 0;	947	w->pending = 0;
857	}	948	}
858	}	949	}
859		950
860	static void	951	inline void
861	ev_start (W w, int active)	952	ev_start (EV_P_ W w, int active)
862	{	953	{
		954	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		955	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		956
863	w->active = active;	957	w->active = active;
		958	ev_ref (EV_A);
864	}	959	}
865		960
866	static void	961	inline void
867	ev_stop (W w)	962	ev_stop (EV_P_ W w)
868	{	963	{
		964	ev_unref (EV_A);
869	w->active = 0;	965	w->active = 0;
870	}	966	}
871		967
872	/*****************************************************************************/	968	/*****************************************************************************/
873		969
874	void	970	void
875	ev_io_start (struct ev_io *w)	971	ev_io_start (EV_P_ struct ev_io *w)
876	{	972	{
877	int fd = w->fd;	973	int fd = w->fd;
878		974
879	if (ev_is_active (w))	975	if (ev_is_active (w))
880	return;	976	return;
881		977
882	assert (("ev_io_start called with negative fd", fd >= 0));	978	assert (("ev_io_start called with negative fd", fd >= 0));
883		979
884	ev_start ((W)w, 1);	980	ev_start (EV_A_ (W)w, 1);
885	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	981	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
886	wlist_add ((WL *)&anfds[fd].head, (WL)w);	982	wlist_add ((WL *)&anfds[fd].head, (WL)w);
887		983
888	fd_change (fd);	984	fd_change (EV_A_ fd);
889	}	985	}
890		986
891	void	987	void
892	ev_io_stop (struct ev_io *w)	988	ev_io_stop (EV_P_ struct ev_io *w)
893	{	989	{
894	ev_clear_pending ((W)w);	990	ev_clear_pending (EV_A_ (W)w);
895	if (!ev_is_active (w))	991	if (!ev_is_active (w))
896	return;	992	return;
897		993
898	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	994	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
899	ev_stop ((W)w);	995	ev_stop (EV_A_ (W)w);
900		996
901	fd_change (w->fd);	997	fd_change (EV_A_ w->fd);
902	}	998	}
903		999
904	void	1000	void
905	ev_timer_start (struct ev_timer *w)	1001	ev_timer_start (EV_P_ struct ev_timer *w)
906	{	1002	{
907	if (ev_is_active (w))	1003	if (ev_is_active (w))
908	return;	1004	return;
909		1005
910	w->at += now;	1006	w->at += mn_now;
911		1007
912	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1008	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
913		1009
914	ev_start ((W)w, ++timercnt);	1010	ev_start (EV_A_ (W)w, ++timercnt);
915	array_needsize (timers, timermax, timercnt, );	1011	array_needsize (timers, timermax, timercnt, );
916	timers [timercnt - 1] = w;	1012	timers [timercnt - 1] = w;
917	upheap ((WT *)timers, timercnt - 1);	1013	upheap ((WT *)timers, timercnt - 1);
918	}	1014	}
919		1015
920	void	1016	void
921	ev_timer_stop (struct ev_timer *w)	1017	ev_timer_stop (EV_P_ struct ev_timer *w)
922	{	1018	{
923	ev_clear_pending ((W)w);	1019	ev_clear_pending (EV_A_ (W)w);
924	if (!ev_is_active (w))	1020	if (!ev_is_active (w))
925	return;	1021	return;
926		1022
927	if (w->active < timercnt--)	1023	if (w->active < timercnt--)
928	{	1024	{
…		…
930	downheap ((WT *)timers, timercnt, w->active - 1);	1026	downheap ((WT *)timers, timercnt, w->active - 1);
931	}	1027	}
932		1028
933	w->at = w->repeat;	1029	w->at = w->repeat;
934		1030
935	ev_stop ((W)w);	1031	ev_stop (EV_A_ (W)w);
936	}	1032	}
937		1033
938	void	1034	void
939	ev_timer_again (struct ev_timer *w)	1035	ev_timer_again (EV_P_ struct ev_timer *w)
940	{	1036	{
941	if (ev_is_active (w))	1037	if (ev_is_active (w))
942	{	1038	{
943	if (w->repeat)	1039	if (w->repeat)
944	{	1040	{
945	w->at = now + w->repeat;	1041	w->at = mn_now + w->repeat;
946	downheap ((WT *)timers, timercnt, w->active - 1);	1042	downheap ((WT *)timers, timercnt, w->active - 1);
947	}	1043	}
948	else	1044	else
949	ev_timer_stop (w);	1045	ev_timer_stop (EV_A_ w);
950	}	1046	}
951	else if (w->repeat)	1047	else if (w->repeat)
952	ev_timer_start (w);	1048	ev_timer_start (EV_A_ w);
953	}	1049	}
954		1050
955	void	1051	void
956	ev_periodic_start (struct ev_periodic *w)	1052	ev_periodic_start (EV_P_ struct ev_periodic *w)
957	{	1053	{
958	if (ev_is_active (w))	1054	if (ev_is_active (w))
959	return;	1055	return;
960		1056
961	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1057	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
962		1058
963	/* this formula differs from the one in periodic_reify because we do not always round up */	1059	/* this formula differs from the one in periodic_reify because we do not always round up */
964	if (w->interval)	1060	if (w->interval)
965	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1061	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
966		1062
967	ev_start ((W)w, ++periodiccnt);	1063	ev_start (EV_A_ (W)w, ++periodiccnt);
968	array_needsize (periodics, periodicmax, periodiccnt, );	1064	array_needsize (periodics, periodicmax, periodiccnt, );
969	periodics [periodiccnt - 1] = w;	1065	periodics [periodiccnt - 1] = w;
970	upheap ((WT *)periodics, periodiccnt - 1);	1066	upheap ((WT *)periodics, periodiccnt - 1);
971	}	1067	}
972		1068
973	void	1069	void
974	ev_periodic_stop (struct ev_periodic *w)	1070	ev_periodic_stop (EV_P_ struct ev_periodic *w)
975	{	1071	{
976	ev_clear_pending ((W)w);	1072	ev_clear_pending (EV_A_ (W)w);
977	if (!ev_is_active (w))	1073	if (!ev_is_active (w))
978	return;	1074	return;
979		1075
980	if (w->active < periodiccnt--)	1076	if (w->active < periodiccnt--)
981	{	1077	{
982	periodics [w->active - 1] = periodics [periodiccnt];	1078	periodics [w->active - 1] = periodics [periodiccnt];
983	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1079	downheap ((WT *)periodics, periodiccnt, w->active - 1);
984	}	1080	}
985		1081
986	ev_stop ((W)w);	1082	ev_stop (EV_A_ (W)w);
987	}	1083	}
988		1084
		1085	#ifndef SA_RESTART
		1086	# define SA_RESTART 0
		1087	#endif
		1088
989	void	1089	void
990	ev_signal_start (struct ev_signal *w)	1090	ev_signal_start (EV_P_ struct ev_signal *w)
991	{	1091	{
992	if (ev_is_active (w))	1092	if (ev_is_active (w))
993	return;	1093	return;
994		1094
995	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1095	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
996		1096
997	ev_start ((W)w, 1);	1097	ev_start (EV_A_ (W)w, 1);
998	array_needsize (signals, signalmax, w->signum, signals_init);	1098	array_needsize (signals, signalmax, w->signum, signals_init);
999	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1099	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1000		1100
1001	if (!w->next)	1101	if (!w->next)
1002	{	1102	{
1003	struct sigaction sa;	1103	struct sigaction sa;
1004	sa.sa_handler = sighandler;	1104	sa.sa_handler = sighandler;
1005	sigfillset (&sa.sa_mask);	1105	sigfillset (&sa.sa_mask);
1006	sa.sa_flags = 0;	1106	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1007	sigaction (w->signum, &sa, 0);	1107	sigaction (w->signum, &sa, 0);
1008	}	1108	}
1009	}	1109	}
1010		1110
1011	void	1111	void
1012	ev_signal_stop (struct ev_signal *w)	1112	ev_signal_stop (EV_P_ struct ev_signal *w)
1013	{	1113	{
1014	ev_clear_pending ((W)w);	1114	ev_clear_pending (EV_A_ (W)w);
1015	if (!ev_is_active (w))	1115	if (!ev_is_active (w))
1016	return;	1116	return;
1017		1117
1018	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1118	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1019	ev_stop ((W)w);	1119	ev_stop (EV_A_ (W)w);
1020		1120
1021	if (!signals [w->signum - 1].head)	1121	if (!signals [w->signum - 1].head)
1022	signal (w->signum, SIG_DFL);	1122	signal (w->signum, SIG_DFL);
1023	}	1123	}
1024		1124
1025	void	1125	void
1026	ev_idle_start (struct ev_idle *w)	1126	ev_idle_start (EV_P_ struct ev_idle *w)
1027	{	1127	{
1028	if (ev_is_active (w))	1128	if (ev_is_active (w))
1029	return;	1129	return;
1030		1130
1031	ev_start ((W)w, ++idlecnt);	1131	ev_start (EV_A_ (W)w, ++idlecnt);
1032	array_needsize (idles, idlemax, idlecnt, );	1132	array_needsize (idles, idlemax, idlecnt, );
1033	idles [idlecnt - 1] = w;	1133	idles [idlecnt - 1] = w;
1034	}	1134	}
1035		1135
1036	void	1136	void
1037	ev_idle_stop (struct ev_idle *w)	1137	ev_idle_stop (EV_P_ struct ev_idle *w)
1038	{	1138	{
1039	ev_clear_pending ((W)w);	1139	ev_clear_pending (EV_A_ (W)w);
1040	if (ev_is_active (w))	1140	if (ev_is_active (w))
1041	return;	1141	return;
1042		1142
1043	idles [w->active - 1] = idles [--idlecnt];	1143	idles [w->active - 1] = idles [--idlecnt];
1044	ev_stop ((W)w);	1144	ev_stop (EV_A_ (W)w);
1045	}	1145	}
1046		1146
1047	void	1147	void
1048	ev_prepare_start (struct ev_prepare *w)	1148	ev_prepare_start (EV_P_ struct ev_prepare *w)
1049	{	1149	{
1050	if (ev_is_active (w))	1150	if (ev_is_active (w))
1051	return;	1151	return;
1052		1152
1053	ev_start ((W)w, ++preparecnt);	1153	ev_start (EV_A_ (W)w, ++preparecnt);
1054	array_needsize (prepares, preparemax, preparecnt, );	1154	array_needsize (prepares, preparemax, preparecnt, );
1055	prepares [preparecnt - 1] = w;	1155	prepares [preparecnt - 1] = w;
1056	}	1156	}
1057		1157
1058	void	1158	void
1059	ev_prepare_stop (struct ev_prepare *w)	1159	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1060	{	1160	{
1061	ev_clear_pending ((W)w);	1161	ev_clear_pending (EV_A_ (W)w);
1062	if (ev_is_active (w))	1162	if (ev_is_active (w))
1063	return;	1163	return;
1064		1164
1065	prepares [w->active - 1] = prepares [--preparecnt];	1165	prepares [w->active - 1] = prepares [--preparecnt];
1066	ev_stop ((W)w);	1166	ev_stop (EV_A_ (W)w);
1067	}	1167	}
1068		1168
1069	void	1169	void
1070	ev_check_start (struct ev_check *w)	1170	ev_check_start (EV_P_ struct ev_check *w)
1071	{	1171	{
1072	if (ev_is_active (w))	1172	if (ev_is_active (w))
1073	return;	1173	return;
1074		1174
1075	ev_start ((W)w, ++checkcnt);	1175	ev_start (EV_A_ (W)w, ++checkcnt);
1076	array_needsize (checks, checkmax, checkcnt, );	1176	array_needsize (checks, checkmax, checkcnt, );
1077	checks [checkcnt - 1] = w;	1177	checks [checkcnt - 1] = w;
1078	}	1178	}
1079		1179
1080	void	1180	void
1081	ev_check_stop (struct ev_check *w)	1181	ev_check_stop (EV_P_ struct ev_check *w)
1082	{	1182	{
1083	ev_clear_pending ((W)w);	1183	ev_clear_pending (EV_A_ (W)w);
1084	if (ev_is_active (w))	1184	if (ev_is_active (w))
1085	return;	1185	return;
1086		1186
1087	checks [w->active - 1] = checks [--checkcnt];	1187	checks [w->active - 1] = checks [--checkcnt];
1088	ev_stop ((W)w);	1188	ev_stop (EV_A_ (W)w);
1089	}	1189	}
1090		1190
1091	void	1191	void
1092	ev_child_start (struct ev_child *w)	1192	ev_child_start (EV_P_ struct ev_child *w)
1093	{	1193	{
1094	if (ev_is_active (w))	1194	if (ev_is_active (w))
1095	return;	1195	return;
1096		1196
1097	ev_start ((W)w, 1);	1197	ev_start (EV_A_ (W)w, 1);
1098	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1198	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1099	}	1199	}
1100		1200
1101	void	1201	void
1102	ev_child_stop (struct ev_child *w)	1202	ev_child_stop (EV_P_ struct ev_child *w)
1103	{	1203	{
1104	ev_clear_pending ((W)w);	1204	ev_clear_pending (EV_A_ (W)w);
1105	if (ev_is_active (w))	1205	if (ev_is_active (w))
1106	return;	1206	return;
1107		1207
1108	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1208	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1109	ev_stop ((W)w);	1209	ev_stop (EV_A_ (W)w);
1110	}	1210	}
1111		1211
1112	/*****************************************************************************/	1212	/*****************************************************************************/
1113		1213
1114	struct ev_once	1214	struct ev_once
…		…
1118	void (cb)(int revents, void arg);	1218	void (cb)(int revents, void arg);
1119	void *arg;	1219	void *arg;
1120	};	1220	};
1121		1221
1122	static void	1222	static void
1123	once_cb (struct ev_once *once, int revents)	1223	once_cb (EV_P_ struct ev_once *once, int revents)
1124	{	1224	{
1125	void (cb)(int revents, void arg) = once->cb;	1225	void (cb)(int revents, void arg) = once->cb;
1126	void *arg = once->arg;	1226	void *arg = once->arg;
1127		1227
1128	ev_io_stop (&once->io);	1228	ev_io_stop (EV_A_ &once->io);
1129	ev_timer_stop (&once->to);	1229	ev_timer_stop (EV_A_ &once->to);
1130	free (once);	1230	free (once);
1131		1231
1132	cb (revents, arg);	1232	cb (revents, arg);
1133	}	1233	}
1134		1234
1135	static void	1235	static void
1136	once_cb_io (struct ev_io *w, int revents)	1236	once_cb_io (EV_P_ struct ev_io *w, int revents)
1137	{	1237	{
1138	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1238	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1139	}	1239	}
1140		1240
1141	static void	1241	static void
1142	once_cb_to (struct ev_timer *w, int revents)	1242	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1143	{	1243	{
1144	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1244	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1145	}	1245	}
1146		1246
1147	void	1247	void
1148	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1248	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1149	{	1249	{
1150	struct ev_once *once = malloc (sizeof (struct ev_once));	1250	struct ev_once *once = malloc (sizeof (struct ev_once));
1151		1251
1152	if (!once)	1252	if (!once)
1153	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1253	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
…		…
1158		1258
1159	ev_watcher_init (&once->io, once_cb_io);	1259	ev_watcher_init (&once->io, once_cb_io);
1160	if (fd >= 0)	1260	if (fd >= 0)
1161	{	1261	{
1162	ev_io_set (&once->io, fd, events);	1262	ev_io_set (&once->io, fd, events);
1163	ev_io_start (&once->io);	1263	ev_io_start (EV_A_ &once->io);
1164	}	1264	}
1165		1265
1166	ev_watcher_init (&once->to, once_cb_to);	1266	ev_watcher_init (&once->to, once_cb_to);
1167	if (timeout >= 0.)	1267	if (timeout >= 0.)
1168	{	1268	{
1169	ev_timer_set (&once->to, timeout, 0.);	1269	ev_timer_set (&once->to, timeout, 0.);
1170	ev_timer_start (&once->to);	1270	ev_timer_start (EV_A_ &once->to);
1171	}	1271	}
1172	}	1272	}
1173	}	1273	}
1174		1274
1175	/*****************************************************************************/	1275	/*****************************************************************************/

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Comparing libev/ev.c (file contents): Revision 1.42 by root, Fri Nov 2 20:05:05 2007 UTC vs. Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.42 by root, Fri Nov 2 20:05:05 2007 UTC vs.
Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC