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Comparing libev/ev.c (file contents):
Revision 1.44 by root, Fri Nov 2 20:59:14 2007 UTC vs.
Revision 1.59 by root, Sun Nov 4 18:15:16 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
…		…
111		113
112	typedef struct ev_watcher *W;	114	typedef struct ev_watcher *W;
113	typedef struct ev_watcher_list *WL;	115	typedef struct ev_watcher_list *WL;
114	typedef struct ev_watcher_time *WT;	116	typedef struct ev_watcher_time *WT;
115		117
116	static ev_tstamp now_floor, now, diff; /* monotonic clock */	118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
117	ev_tstamp ev_now;
118	int ev_method;
119
120	static int have_monotonic; /* runtime */
121
122	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
123	static void (*method_modify)(int fd, int oev, int nev);
124	static void (*method_poll)(ev_tstamp timeout);
125		119
126	/*****************************************************************************/	120	/*****************************************************************************/
127		121
128	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	#if 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
129	ev_time (void)	156	ev_time (void)
130	{	157	{
131	#if EV_USE_REALTIME	158	#if EV_USE_REALTIME
132	struct timespec ts;	159	struct timespec ts;
133	clock_gettime (CLOCK_REALTIME, &ts);	160	clock_gettime (CLOCK_REALTIME, &ts);
…		…
137	gettimeofday (&tv, 0);	164	gettimeofday (&tv, 0);
138	return tv.tv_sec + tv.tv_usec * 1e-6;	165	return tv.tv_sec + tv.tv_usec * 1e-6;
139	#endif	166	#endif
140	}	167	}
141		168
142	static ev_tstamp	169	inline ev_tstamp
143	get_clock (void)	170	get_clock (void)
144	{	171	{
145	#if EV_USE_MONOTONIC	172	#if EV_USE_MONOTONIC
146	if (expect_true (have_monotonic))	173	if (expect_true (have_monotonic))
147	{	174	{
…		…
150	return ts.tv_sec + ts.tv_nsec * 1e-9;	177	return ts.tv_sec + ts.tv_nsec * 1e-9;
151	}	178	}
152	#endif	179	#endif
153		180
154	return ev_time ();	181	return ev_time ();
		182	}
		183
		184	ev_tstamp
		185	ev_now (EV_P)
		186	{
		187	return rt_now;
155	}	188	}
156		189
157	#define array_roundsize(base,n) ((n) | 4 & ~3)	190	#define array_roundsize(base,n) ((n) | 4 & ~3)
158		191
159	#define array_needsize(base,cur,cnt,init) \	192	#define array_needsize(base,cur,cnt,init) \
…		…
171	cur = newcnt; \	204	cur = newcnt; \
172	}	205	}
173		206
174	/*****************************************************************************/	207	/*****************************************************************************/
175		208
176	typedef struct
177	{
178	struct ev_io *head;
179	unsigned char events;
180	unsigned char reify;
181	} ANFD;
182
183	static ANFD *anfds;
184	static int anfdmax;
185
186	static void	209	static void
187	anfds_init (ANFD *base, int count)	210	anfds_init (ANFD *base, int count)
188	{	211	{
189	while (count--)	212	while (count--)
190	{	213	{
…		…
194		217
195	++base;	218	++base;
196	}	219	}
197	}	220	}
198		221
199	typedef struct
200	{
201	W w;
202	int events;
203	} ANPENDING;
204
205	static ANPENDING *pendings [NUMPRI];
206	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
207
208	static void	222	static void
209	event (W w, int events)	223	event (EV_P_ W w, int events)
210	{	224	{
211	if (w->pending)	225	if (w->pending)
212	{	226	{
213	pendings [ABSPRI (w)][w->pending - 1].events |= events;	227	pendings [ABSPRI (w)][w->pending - 1].events |= events;
214	return;	228	return;
…		…
219	pendings [ABSPRI (w)][w->pending - 1].w = w;	233	pendings [ABSPRI (w)][w->pending - 1].w = w;
220	pendings [ABSPRI (w)][w->pending - 1].events = events;	234	pendings [ABSPRI (w)][w->pending - 1].events = events;
221	}	235	}
222		236
223	static void	237	static void
224	queue_events (W *events, int eventcnt, int type)	238	queue_events (EV_P_ W *events, int eventcnt, int type)
225	{	239	{
226	int i;	240	int i;
227		241
228	for (i = 0; i < eventcnt; ++i)	242	for (i = 0; i < eventcnt; ++i)
229	event (events [i], type);	243	event (EV_A_ events [i], type);
230	}	244	}
231		245
232	static void	246	static void
233	fd_event (int fd, int events)	247	fd_event (EV_P_ int fd, int events)
234	{	248	{
235	ANFD *anfd = anfds + fd;	249	ANFD *anfd = anfds + fd;
236	struct ev_io *w;	250	struct ev_io *w;
237		251
238	for (w = anfd->head; w; w = w->next)	252	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
239	{	253	{
240	int ev = w->events & events;	254	int ev = w->events & events;
241		255
242	if (ev)	256	if (ev)
243	event ((W)w, ev);	257	event (EV_A_ (W)w, ev);
244	}	258	}
245	}	259	}
246		260
247	/*****************************************************************************/	261	/*****************************************************************************/
248		262
249	static int *fdchanges;
250	static int fdchangemax, fdchangecnt;
251
252	static void	263	static void
253	fd_reify (void)	264	fd_reify (EV_P)
254	{	265	{
255	int i;	266	int i;
256		267
257	for (i = 0; i < fdchangecnt; ++i)	268	for (i = 0; i < fdchangecnt; ++i)
258	{	269	{
…		…
260	ANFD *anfd = anfds + fd;	271	ANFD *anfd = anfds + fd;
261	struct ev_io *w;	272	struct ev_io *w;
262		273
263	int events = 0;	274	int events = 0;
264		275
265	for (w = anfd->head; w; w = w->next)	276	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
266	events |= w->events;	277	events |= w->events;
267		278
268	anfd->reify = 0;	279	anfd->reify = 0;
269		280
270	if (anfd->events != events)	281	if (anfd->events != events)
271	{	282	{
272	method_modify (fd, anfd->events, events);	283	method_modify (EV_A_ fd, anfd->events, events);
273	anfd->events = events;	284	anfd->events = events;
274	}	285	}
275	}	286	}
276		287
277	fdchangecnt = 0;	288	fdchangecnt = 0;
278	}	289	}
279		290
280	static void	291	static void
281	fd_change (int fd)	292	fd_change (EV_P_ int fd)
282	{	293	{
283	if (anfds [fd].reify || fdchangecnt < 0)	294	if (anfds [fd].reify || fdchangecnt < 0)
284	return;	295	return;
285		296
286	anfds [fd].reify = 1;	297	anfds [fd].reify = 1;
…		…
289	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
290	fdchanges [fdchangecnt - 1] = fd;	301	fdchanges [fdchangecnt - 1] = fd;
291	}	302	}
292		303
293	static void	304	static void
294	fd_kill (int fd)	305	fd_kill (EV_P_ int fd)
295	{	306	{
296	struct ev_io *w;	307	struct ev_io *w;
297		308
298	printf ("killing fd %d\n", fd);//D
299	while ((w = anfds [fd].head))	309	while ((w = (struct ev_io *)anfds [fd].head))
300	{	310	{
301	ev_io_stop (w);	311	ev_io_stop (EV_A_ w);
302	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	312	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
303	}	313	}
304	}	314	}
305		315
306	/* called on EBADF to verify fds */	316	/* called on EBADF to verify fds */
307	static void	317	static void
308	fd_ebadf (void)	318	fd_ebadf (EV_P)
309	{	319	{
310	int fd;	320	int fd;
311		321
312	for (fd = 0; fd < anfdmax; ++fd)	322	for (fd = 0; fd < anfdmax; ++fd)
313	if (anfds [fd].events)	323	if (anfds [fd].events)
314	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
315	fd_kill (fd);	325	fd_kill (EV_A_ fd);
316	}	326	}
317		327
318	/* 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 */
319	static void	329	static void
320	fd_enomem (void)	330	fd_enomem (EV_P)
321	{	331	{
322	int fd = anfdmax;	332	int fd = anfdmax;
323		333
324	while (fd--)	334	while (fd--)
325	if (anfds [fd].events)	335	if (anfds [fd].events)
326	{	336	{
327	close (fd);	337	close (fd);
328	fd_kill (fd);	338	fd_kill (EV_A_ fd);
329	return;	339	return;
330	}	340	}
331	}	341	}
332		342
		343	/* susually called after fork if method needs to re-arm all fds from scratch */
		344	static void
		345	fd_rearm_all (EV_P)
		346	{
		347	int fd;
		348
		349	/* this should be highly optimised to not do anything but set a flag */
		350	for (fd = 0; fd < anfdmax; ++fd)
		351	if (anfds [fd].events)
		352	{
		353	anfds [fd].events = 0;
		354	fd_change (fd);
		355	}
		356	}
		357
333	/*****************************************************************************/	358	/*****************************************************************************/
334		359
335	static struct ev_timer **timers;
336	static int timermax, timercnt;
337
338	static struct ev_periodic **periodics;
339	static int periodicmax, periodiccnt;
340
341	static void	360	static void
342	upheap (WT *timers, int k)	361	upheap (WT *heap, int k)
343	{	362	{
344	WT w = timers [k];	363	WT w = heap [k];
345		364
346	while (k && timers [k >> 1]->at > w->at)	365	while (k && heap [k >> 1]->at > w->at)
347	{	366	{
348	timers [k] = timers [k >> 1];	367	heap [k] = heap [k >> 1];
349	timers [k]->active = k + 1;	368	heap [k]->active = k + 1;
350	k >>= 1;	369	k >>= 1;
351	}	370	}
352		371
353	timers [k] = w;	372	heap [k] = w;
354	timers [k]->active = k + 1;	373	heap [k]->active = k + 1;
355		374
356	}	375	}
357		376
358	static void	377	static void
359	downheap (WT *timers, int N, int k)	378	downheap (WT *heap, int N, int k)
360	{	379	{
361	WT w = timers [k];	380	WT w = heap [k];
362		381
363	while (k < (N >> 1))	382	while (k < (N >> 1))
364	{	383	{
365	int j = k << 1;	384	int j = k << 1;
366		385
367	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	386	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
368	++j;	387	++j;
369		388
370	if (w->at <= timers [j]->at)	389	if (w->at <= heap [j]->at)
371	break;	390	break;
372		391
373	timers [k] = timers [j];	392	heap [k] = heap [j];
374	timers [k]->active = k + 1;	393	heap [k]->active = k + 1;
375	k = j;	394	k = j;
376	}	395	}
377		396
378	timers [k] = w;	397	heap [k] = w;
379	timers [k]->active = k + 1;	398	heap [k]->active = k + 1;
380	}	399	}
381		400
382	/*****************************************************************************/	401	/*****************************************************************************/
383		402
384	typedef struct	403	typedef struct
385	{	404	{
386	struct ev_signal *head;	405	struct ev_watcher_list *head;
387	sig_atomic_t volatile gotsig;	406	sig_atomic_t volatile gotsig;
388	} ANSIG;	407	} ANSIG;
389		408
390	static ANSIG *signals;	409	static ANSIG *signals;
391	static int signalmax;	410	static int signalmax;
…		…
411	{	430	{
412	signals [signum - 1].gotsig = 1;	431	signals [signum - 1].gotsig = 1;
413		432
414	if (!gotsig)	433	if (!gotsig)
415	{	434	{
		435	int old_errno = errno;
416	gotsig = 1;	436	gotsig = 1;
417	write (sigpipe [1], &signum, 1);	437	write (sigpipe [1], &signum, 1);
		438	errno = old_errno;
418	}	439	}
419	}	440	}
420		441
421	static void	442	static void
422	sigcb (struct ev_io *iow, int revents)	443	sigcb (EV_P_ struct ev_io *iow, int revents)
423	{	444	{
424	struct ev_signal *w;	445	struct ev_watcher_list *w;
425	int signum;	446	int signum;
426		447
427	read (sigpipe [0], &revents, 1);	448	read (sigpipe [0], &revents, 1);
428	gotsig = 0;	449	gotsig = 0;
429		450
…		…
431	if (signals [signum].gotsig)	452	if (signals [signum].gotsig)
432	{	453	{
433	signals [signum].gotsig = 0;	454	signals [signum].gotsig = 0;
434		455
435	for (w = signals [signum].head; w; w = w->next)	456	for (w = signals [signum].head; w; w = w->next)
436	event ((W)w, EV_SIGNAL);	457	event (EV_A_ (W)w, EV_SIGNAL);
437	}	458	}
438	}	459	}
439		460
440	static void	461	static void
441	siginit (void)	462	siginit (EV_P)
442	{	463	{
		464	#ifndef WIN32
443	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	465	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
444	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	466	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
445		467
446	/* rather than sort out wether we really need nb, set it */	468	/* rather than sort out wether we really need nb, set it */
447	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	469	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
448	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	470	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		471	#endif
449		472
450	ev_io_set (&sigev, sigpipe [0], EV_READ);	473	ev_io_set (&sigev, sigpipe [0], EV_READ);
451	ev_io_start (&sigev);	474	ev_io_start (EV_A_ &sigev);
		475	ev_unref (EV_A); /* child watcher should not keep loop alive */
452	}	476	}
453		477
454	/*****************************************************************************/	478	/*****************************************************************************/
455		479
456	static struct ev_idle **idles;	480	#ifndef WIN32
457	static int idlemax, idlecnt;
458
459	static struct ev_prepare **prepares;
460	static int preparemax, preparecnt;
461
462	static struct ev_check **checks;
463	static int checkmax, checkcnt;
464
465	/*****************************************************************************/
466		481
467	static struct ev_child *childs [PID_HASHSIZE];	482	static struct ev_child *childs [PID_HASHSIZE];
468	static struct ev_signal childev;	483	static struct ev_signal childev;
469		484
470	#ifndef WCONTINUED	485	#ifndef WCONTINUED
471	# define WCONTINUED 0	486	# define WCONTINUED 0
472	#endif	487	#endif
473		488
474	static void	489	static void
475	childcb (struct ev_signal *sw, int revents)	490	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
476	{	491	{
477	struct ev_child *w;	492	struct ev_child *w;
		493
		494	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		495	if (w->pid == pid || !w->pid)
		496	{
		497	w->priority = sw->priority; /* need to do it *now* */
		498	w->rpid = pid;
		499	w->rstatus = status;
		500	event (EV_A_ (W)w, EV_CHILD);
		501	}
		502	}
		503
		504	static void
		505	childcb (EV_P_ struct ev_signal *sw, int revents)
		506	{
478	int pid, status;	507	int pid, status;
479		508
480	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	509	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
481	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	510	{
482	if (w->pid == pid || !w->pid)	511	/* make sure we are called again until all childs have been reaped */
483	{	512	event (EV_A_ (W)sw, EV_SIGNAL);
484	w->status = status;	513
485	event ((W)w, EV_CHILD);	514	child_reap (EV_A_ sw, pid, pid, status);
486	}	515	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		516	}
487	}	517	}
		518
		519	#endif
488		520
489	/*****************************************************************************/	521	/*****************************************************************************/
490		522
491	#if EV_USE_KQUEUE	523	#if EV_USE_KQUEUE
492	# include "ev_kqueue.c"	524	# include "ev_kqueue.c"
…		…
511	ev_version_minor (void)	543	ev_version_minor (void)
512	{	544	{
513	return EV_VERSION_MINOR;	545	return EV_VERSION_MINOR;
514	}	546	}
515		547
516	/* return true if we are running with elevated privileges and ignore env variables */	548	/* return true if we are running with elevated privileges and should ignore env variables */
517	static int	549	static int
518	enable_secure ()	550	enable_secure (void)
519	{	551	{
		552	#ifdef WIN32
		553	return 0;
		554	#else
520	return getuid () != geteuid ()	555	return getuid () != geteuid ()
521	|| getgid () != getegid ();	556	|| getgid () != getegid ();
		557	#endif
522	}	558	}
523		559
524	int ev_init (int methods)	560	int
		561	ev_method (EV_P)
525	{	562	{
		563	return method;
		564	}
		565
		566	static void
		567	loop_init (EV_P_ int methods)
		568	{
526	if (!ev_method)	569	if (!method)
527	{	570	{
528	#if EV_USE_MONOTONIC	571	#if EV_USE_MONOTONIC
529	{	572	{
530	struct timespec ts;	573	struct timespec ts;
531	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	574	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
532	have_monotonic = 1;	575	have_monotonic = 1;
533	}	576	}
534	#endif	577	#endif
535		578
536	ev_now = ev_time ();	579	rt_now = ev_time ();
537	now = get_clock ();	580	mn_now = get_clock ();
538	now_floor = now;	581	now_floor = mn_now;
539	diff = ev_now - now;	582	rtmn_diff = rt_now - mn_now;
540
541	if (pipe (sigpipe))
542	return 0;
543		583
544	if (methods == EVMETHOD_AUTO)	584	if (methods == EVMETHOD_AUTO)
545	if (!enable_secure () && getenv ("LIBEV_METHODS"))	585	if (!enable_secure () && getenv ("LIBEV_METHODS"))
546	methods = atoi (getenv ("LIBEV_METHODS"));	586	methods = atoi (getenv ("LIBEV_METHODS"));
547	else	587	else
548	methods = EVMETHOD_ANY;	588	methods = EVMETHOD_ANY;
549		589
550	ev_method = 0;	590	method = 0;
551	#if EV_USE_KQUEUE	591	#if EV_USE_KQUEUE
552	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	592	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
553	#endif	593	#endif
554	#if EV_USE_EPOLL	594	#if EV_USE_EPOLL
555	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	595	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
556	#endif	596	#endif
557	#if EV_USE_POLL	597	#if EV_USE_POLL
558	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	598	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
559	#endif	599	#endif
560	#if EV_USE_SELECT	600	#if EV_USE_SELECT
561	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	601	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
562	#endif	602	#endif
		603	}
		604	}
563		605
		606	void
		607	loop_destroy (EV_P)
		608	{
		609	#if EV_USE_KQUEUE
		610	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		611	#endif
		612	#if EV_USE_EPOLL
		613	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		614	#endif
		615	#if EV_USE_POLL
		616	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		617	#endif
		618	#if EV_USE_SELECT
		619	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		620	#endif
		621
		622	method = 0;
		623	/*TODO*/
		624	}
		625
		626	void
		627	loop_fork (EV_P)
		628	{
		629	/*TODO*/
		630	#if EV_USE_EPOLL
		631	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		632	#endif
		633	#if EV_USE_KQUEUE
		634	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		635	#endif
		636	}
		637
		638	#if EV_MULTIPLICITY
		639	struct ev_loop *
		640	ev_loop_new (int methods)
		641	{
		642	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));
		643
		644	loop_init (EV_A_ methods);
		645
		646	if (ev_methods (EV_A))
		647	return loop;
		648
		649	return 0;
		650	}
		651
		652	void
		653	ev_loop_destroy (EV_P)
		654	{
		655	loop_destroy (EV_A);
		656	free (loop);
		657	}
		658
		659	void
		660	ev_loop_fork (EV_P)
		661	{
		662	loop_fork (EV_A);
		663	}
		664
		665	#endif
		666
		667	#if EV_MULTIPLICITY
		668	struct ev_loop default_loop_struct;
		669	static struct ev_loop *default_loop;
		670
		671	struct ev_loop *
		672	#else
		673	static int default_loop;
		674
		675	int
		676	#endif
		677	ev_default_loop (int methods)
		678	{
		679	if (sigpipe [0] == sigpipe [1])
		680	if (pipe (sigpipe))
		681	return 0;
		682
		683	if (!default_loop)
		684	{
		685	#if EV_MULTIPLICITY
		686	struct ev_loop *loop = default_loop = &default_loop_struct;
		687	#else
		688	default_loop = 1;
		689	#endif
		690
		691	loop_init (EV_A_ methods);
		692
564	if (ev_method)	693	if (ev_method (EV_A))
565	{	694	{
566	ev_watcher_init (&sigev, sigcb);	695	ev_watcher_init (&sigev, sigcb);
		696	ev_set_priority (&sigev, EV_MAXPRI);
567	siginit ();	697	siginit (EV_A);
568		698
		699	#ifndef WIN32
569	ev_signal_init (&childev, childcb, SIGCHLD);	700	ev_signal_init (&childev, childcb, SIGCHLD);
		701	ev_set_priority (&childev, EV_MAXPRI);
570	ev_signal_start (&childev);	702	ev_signal_start (EV_A_ &childev);
		703	ev_unref (EV_A); /* child watcher should not keep loop alive */
		704	#endif
571	}	705	}
		706	else
		707	default_loop = 0;
572	}	708	}
573		709
574	return ev_method;	710	return default_loop;
575	}	711	}
576		712
577	/*****************************************************************************/
578
579	void	713	void
580	ev_fork_prepare (void)	714	ev_default_destroy (void)
581	{	715	{
582	/* nop */	716	#if EV_MULTIPLICITY
583	}	717	struct ev_loop *loop = default_loop;
584
585	void
586	ev_fork_parent (void)
587	{
588	/* nop */
589	}
590
591	void
592	ev_fork_child (void)
593	{
594	#if EV_USE_EPOLL
595	if (ev_method == EVMETHOD_EPOLL)
596	epoll_postfork_child ();
597	#endif	718	#endif
598		719
		720	ev_ref (EV_A); /* child watcher */
		721	ev_signal_stop (EV_A_ &childev);
		722
		723	ev_ref (EV_A); /* signal watcher */
599	ev_io_stop (&sigev);	724	ev_io_stop (EV_A_ &sigev);
		725
		726	close (sigpipe [0]); sigpipe [0] = 0;
		727	close (sigpipe [1]); sigpipe [1] = 0;
		728
		729	loop_destroy (EV_A);
		730	}
		731
		732	void
		733	ev_default_fork (EV_P)
		734	{
		735	loop_fork (EV_A);
		736
		737	ev_io_stop (EV_A_ &sigev);
600	close (sigpipe [0]);	738	close (sigpipe [0]);
601	close (sigpipe [1]);	739	close (sigpipe [1]);
602	pipe (sigpipe);	740	pipe (sigpipe);
		741
		742	ev_ref (EV_A); /* signal watcher */
603	siginit ();	743	siginit (EV_A);
604	}	744	}
605		745
606	/*****************************************************************************/	746	/*****************************************************************************/
607		747
608	static void	748	static void
609	call_pending (void)	749	call_pending (EV_P)
610	{	750	{
611	int pri;	751	int pri;
612		752
613	for (pri = NUMPRI; pri--; )	753	for (pri = NUMPRI; pri--; )
614	while (pendingcnt [pri])	754	while (pendingcnt [pri])
…		…
616	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	756	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
617		757
618	if (p->w)	758	if (p->w)
619	{	759	{
620	p->w->pending = 0;	760	p->w->pending = 0;
621	p->w->cb (p->w, p->events);	761	p->w->cb (EV_A_ p->w, p->events);
622	}	762	}
623	}	763	}
624	}	764	}
625		765
626	static void	766	static void
627	timers_reify (void)	767	timers_reify (EV_P)
628	{	768	{
629	while (timercnt && timers [0]->at <= now)	769	while (timercnt && timers [0]->at <= mn_now)
630	{	770	{
631	struct ev_timer *w = timers [0];	771	struct ev_timer *w = timers [0];
632		772
633	/* first reschedule or stop timer */	773	/* first reschedule or stop timer */
634	if (w->repeat)	774	if (w->repeat)
635	{	775	{
636	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	776	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
637	w->at = now + w->repeat;	777	w->at = mn_now + w->repeat;
638	downheap ((WT *)timers, timercnt, 0);	778	downheap ((WT *)timers, timercnt, 0);
639	}	779	}
640	else	780	else
641	ev_timer_stop (w); /* nonrepeating: stop timer */	781	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
642		782
643	event ((W)w, EV_TIMEOUT);	783	event (EV_A_ (W)w, EV_TIMEOUT);
644	}	784	}
645	}	785	}
646		786
647	static void	787	static void
648	periodics_reify (void)	788	periodics_reify (EV_P)
649	{	789	{
650	while (periodiccnt && periodics [0]->at <= ev_now)	790	while (periodiccnt && periodics [0]->at <= rt_now)
651	{	791	{
652	struct ev_periodic *w = periodics [0];	792	struct ev_periodic *w = periodics [0];
653		793
654	/* first reschedule or stop timer */	794	/* first reschedule or stop timer */
655	if (w->interval)	795	if (w->interval)
656	{	796	{
657	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	797	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;
658	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	798	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
659	downheap ((WT *)periodics, periodiccnt, 0);	799	downheap ((WT *)periodics, periodiccnt, 0);
660	}	800	}
661	else	801	else
662	ev_periodic_stop (w); /* nonrepeating: stop timer */	802	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
663		803
664	event ((W)w, EV_PERIODIC);	804	event (EV_A_ (W)w, EV_PERIODIC);
665	}	805	}
666	}	806	}
667		807
668	static void	808	static void
669	periodics_reschedule (ev_tstamp diff)	809	periodics_reschedule (EV_P)
670	{	810	{
671	int i;	811	int i;
672		812
673	/* adjust periodics after time jump */	813	/* adjust periodics after time jump */
674	for (i = 0; i < periodiccnt; ++i)	814	for (i = 0; i < periodiccnt; ++i)
675	{	815	{
676	struct ev_periodic *w = periodics [i];	816	struct ev_periodic *w = periodics [i];
677		817
678	if (w->interval)	818	if (w->interval)
679	{	819	{
680	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	820	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
681		821
682	if (fabs (diff) >= 1e-4)	822	if (fabs (diff) >= 1e-4)
683	{	823	{
684	ev_periodic_stop (w);	824	ev_periodic_stop (EV_A_ w);
685	ev_periodic_start (w);	825	ev_periodic_start (EV_A_ w);
686		826
687	i = 0; /* restart loop, inefficient, but time jumps should be rare */	827	i = 0; /* restart loop, inefficient, but time jumps should be rare */
688	}	828	}
689	}	829	}
690	}	830	}
691	}	831	}
692		832
693	static int	833	inline int
694	time_update_monotonic (void)	834	time_update_monotonic (EV_P)
695	{	835	{
696	now = get_clock ();	836	mn_now = get_clock ();
697		837
698	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	838	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
699	{	839	{
700	ev_now = now + diff;	840	rt_now = rtmn_diff + mn_now;
701	return 0;	841	return 0;
702	}	842	}
703	else	843	else
704	{	844	{
705	now_floor = now;	845	now_floor = mn_now;
706	ev_now = ev_time ();	846	rt_now = ev_time ();
707	return 1;	847	return 1;
708	}	848	}
709	}	849	}
710		850
711	static void	851	static void
712	time_update (void)	852	time_update (EV_P)
713	{	853	{
714	int i;	854	int i;
715		855
716	#if EV_USE_MONOTONIC	856	#if EV_USE_MONOTONIC
717	if (expect_true (have_monotonic))	857	if (expect_true (have_monotonic))
718	{	858	{
719	if (time_update_monotonic ())	859	if (time_update_monotonic (EV_A))
720	{	860	{
721	ev_tstamp odiff = diff;	861	ev_tstamp odiff = rtmn_diff;
722		862
723	for (i = 4; --i; ) /* loop a few times, before making important decisions */	863	for (i = 4; --i; ) /* loop a few times, before making important decisions */
724	{	864	{
725	diff = ev_now - now;	865	rtmn_diff = rt_now - mn_now;
726		866
727	if (fabs (odiff - diff) < MIN_TIMEJUMP)	867	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
728	return; /* all is well */	868	return; /* all is well */
729		869
730	ev_now = ev_time ();	870	rt_now = ev_time ();
731	now = get_clock ();	871	mn_now = get_clock ();
732	now_floor = now;	872	now_floor = mn_now;
733	}	873	}
734		874
735	periodics_reschedule (diff - odiff);	875	periodics_reschedule (EV_A);
736	/* no timer adjustment, as the monotonic clock doesn't jump */	876	/* no timer adjustment, as the monotonic clock doesn't jump */
		877	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
737	}	878	}
738	}	879	}
739	else	880	else
740	#endif	881	#endif
741	{	882	{
742	ev_now = ev_time ();	883	rt_now = ev_time ();
743		884
744	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	885	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
745	{	886	{
746	periodics_reschedule (ev_now - now);	887	periodics_reschedule (EV_A);
747		888
748	/* adjust timers. this is easy, as the offset is the same for all */	889	/* adjust timers. this is easy, as the offset is the same for all */
749	for (i = 0; i < timercnt; ++i)	890	for (i = 0; i < timercnt; ++i)
750	timers [i]->at += diff;	891	timers [i]->at += rt_now - mn_now;
751	}	892	}
752		893
753	now = ev_now;	894	mn_now = rt_now;
754	}	895	}
755	}	896	}
756		897
757	int ev_loop_done;	898	void
		899	ev_ref (EV_P)
		900	{
		901	++activecnt;
		902	}
758		903
		904	void
		905	ev_unref (EV_P)
		906	{
		907	--activecnt;
		908	}
		909
		910	static int loop_done;
		911
		912	void
759	void ev_loop (int flags)	913	ev_loop (EV_P_ int flags)
760	{	914	{
761	double block;	915	double block;
762	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	916	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
763		917
764	do	918	do
765	{	919	{
766	/* queue check watchers (and execute them) */	920	/* queue check watchers (and execute them) */
767	if (expect_false (preparecnt))	921	if (expect_false (preparecnt))
768	{	922	{
769	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	923	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
770	call_pending ();	924	call_pending (EV_A);
771	}	925	}
772		926
773	/* update fd-related kernel structures */	927	/* update fd-related kernel structures */
774	fd_reify ();	928	fd_reify (EV_A);
775		929
776	/* calculate blocking time */	930	/* calculate blocking time */
777		931
778	/* we only need this for !monotonic clockor timers, but as we basically	932	/* we only need this for !monotonic clockor timers, but as we basically
779	always have timers, we just calculate it always */	933	always have timers, we just calculate it always */
780	#if EV_USE_MONOTONIC	934	#if EV_USE_MONOTONIC
781	if (expect_true (have_monotonic))	935	if (expect_true (have_monotonic))
782	time_update_monotonic ();	936	time_update_monotonic (EV_A);
783	else	937	else
784	#endif	938	#endif
785	{	939	{
786	ev_now = ev_time ();	940	rt_now = ev_time ();
787	now = ev_now;	941	mn_now = rt_now;
788	}	942	}
789		943
790	if (flags & EVLOOP_NONBLOCK || idlecnt)	944	if (flags & EVLOOP_NONBLOCK || idlecnt)
791	block = 0.;	945	block = 0.;
792	else	946	else
793	{	947	{
794	block = MAX_BLOCKTIME;	948	block = MAX_BLOCKTIME;
795		949
796	if (timercnt)	950	if (timercnt)
797	{	951	{
798	ev_tstamp to = timers [0]->at - now + method_fudge;	952	ev_tstamp to = timers [0]->at - mn_now + method_fudge;
799	if (block > to) block = to;	953	if (block > to) block = to;
800	}	954	}
801		955
802	if (periodiccnt)	956	if (periodiccnt)
803	{	957	{
804	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	958	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
805	if (block > to) block = to;	959	if (block > to) block = to;
806	}	960	}
807		961
808	if (block < 0.) block = 0.;	962	if (block < 0.) block = 0.;
809	}	963	}
810		964
811	method_poll (block);	965	method_poll (EV_A_ block);
812		966
813	/* update ev_now, do magic */	967	/* update rt_now, do magic */
814	time_update ();	968	time_update (EV_A);
815		969
816	/* queue pending timers and reschedule them */	970	/* queue pending timers and reschedule them */
817	timers_reify (); /* relative timers called last */	971	timers_reify (EV_A); /* relative timers called last */
818	periodics_reify (); /* absolute timers called first */	972	periodics_reify (EV_A); /* absolute timers called first */
819		973
820	/* queue idle watchers unless io or timers are pending */	974	/* queue idle watchers unless io or timers are pending */
821	if (!pendingcnt)	975	if (!pendingcnt)
822	queue_events ((W *)idles, idlecnt, EV_IDLE);	976	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
823		977
824	/* queue check watchers, to be executed first */	978	/* queue check watchers, to be executed first */
825	if (checkcnt)	979	if (checkcnt)
826	queue_events ((W *)checks, checkcnt, EV_CHECK);	980	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
827		981
828	call_pending ();	982	call_pending (EV_A);
829	}	983	}
830	while (!ev_loop_done);	984	while (activecnt && !loop_done);
831		985
832	if (ev_loop_done != 2)	986	if (loop_done != 2)
833	ev_loop_done = 0;	987	loop_done = 0;
		988	}
		989
		990	void
		991	ev_unloop (EV_P_ int how)
		992	{
		993	loop_done = how;
834	}	994	}
835		995
836	/*****************************************************************************/	996	/*****************************************************************************/
837		997
838	static void	998	inline void
839	wlist_add (WL *head, WL elem)	999	wlist_add (WL *head, WL elem)
840	{	1000	{
841	elem->next = *head;	1001	elem->next = *head;
842	*head = elem;	1002	*head = elem;
843	}	1003	}
844		1004
845	static void	1005	inline void
846	wlist_del (WL *head, WL elem)	1006	wlist_del (WL *head, WL elem)
847	{	1007	{
848	while (*head)	1008	while (*head)
849	{	1009	{
850	if (*head == elem)	1010	if (*head == elem)
…		…
855		1015
856	head = &(*head)->next;	1016	head = &(*head)->next;
857	}	1017	}
858	}	1018	}
859		1019
860	static void	1020	inline void
861	ev_clear_pending (W w)	1021	ev_clear_pending (EV_P_ W w)
862	{	1022	{
863	if (w->pending)	1023	if (w->pending)
864	{	1024	{
865	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1025	pendings [ABSPRI (w)][w->pending - 1].w = 0;
866	w->pending = 0;	1026	w->pending = 0;
867	}	1027	}
868	}	1028	}
869		1029
870	static void	1030	inline void
871	ev_start (W w, int active)	1031	ev_start (EV_P_ W w, int active)
872	{	1032	{
873	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1033	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
874	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1034	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
875		1035
876	w->active = active;	1036	w->active = active;
		1037	ev_ref (EV_A);
877	}	1038	}
878		1039
879	static void	1040	inline void
880	ev_stop (W w)	1041	ev_stop (EV_P_ W w)
881	{	1042	{
		1043	ev_unref (EV_A);
882	w->active = 0;	1044	w->active = 0;
883	}	1045	}
884		1046
885	/*****************************************************************************/	1047	/*****************************************************************************/
886		1048
887	void	1049	void
888	ev_io_start (struct ev_io *w)	1050	ev_io_start (EV_P_ struct ev_io *w)
889	{	1051	{
890	int fd = w->fd;	1052	int fd = w->fd;
891		1053
892	if (ev_is_active (w))	1054	if (ev_is_active (w))
893	return;	1055	return;
894		1056
895	assert (("ev_io_start called with negative fd", fd >= 0));	1057	assert (("ev_io_start called with negative fd", fd >= 0));
896		1058
897	ev_start ((W)w, 1);	1059	ev_start (EV_A_ (W)w, 1);
898	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1060	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
899	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1061	wlist_add ((WL *)&anfds[fd].head, (WL)w);
900		1062
901	fd_change (fd);	1063	fd_change (EV_A_ fd);
902	}	1064	}
903		1065
904	void	1066	void
905	ev_io_stop (struct ev_io *w)	1067	ev_io_stop (EV_P_ struct ev_io *w)
906	{	1068	{
907	ev_clear_pending ((W)w);	1069	ev_clear_pending (EV_A_ (W)w);
908	if (!ev_is_active (w))	1070	if (!ev_is_active (w))
909	return;	1071	return;
910		1072
911	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1073	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
912	ev_stop ((W)w);	1074	ev_stop (EV_A_ (W)w);
913		1075
914	fd_change (w->fd);	1076	fd_change (EV_A_ w->fd);
915	}	1077	}
916		1078
917	void	1079	void
918	ev_timer_start (struct ev_timer *w)	1080	ev_timer_start (EV_P_ struct ev_timer *w)
919	{	1081	{
920	if (ev_is_active (w))	1082	if (ev_is_active (w))
921	return;	1083	return;
922		1084
923	w->at += now;	1085	w->at += mn_now;
924		1086
925	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1087	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
926		1088
927	ev_start ((W)w, ++timercnt);	1089	ev_start (EV_A_ (W)w, ++timercnt);
928	array_needsize (timers, timermax, timercnt, );	1090	array_needsize (timers, timermax, timercnt, );
929	timers [timercnt - 1] = w;	1091	timers [timercnt - 1] = w;
930	upheap ((WT *)timers, timercnt - 1);	1092	upheap ((WT *)timers, timercnt - 1);
931	}	1093	}
932		1094
933	void	1095	void
934	ev_timer_stop (struct ev_timer *w)	1096	ev_timer_stop (EV_P_ struct ev_timer *w)
935	{	1097	{
936	ev_clear_pending ((W)w);	1098	ev_clear_pending (EV_A_ (W)w);
937	if (!ev_is_active (w))	1099	if (!ev_is_active (w))
938	return;	1100	return;
939		1101
940	if (w->active < timercnt--)	1102	if (w->active < timercnt--)
941	{	1103	{
…		…
943	downheap ((WT *)timers, timercnt, w->active - 1);	1105	downheap ((WT *)timers, timercnt, w->active - 1);
944	}	1106	}
945		1107
946	w->at = w->repeat;	1108	w->at = w->repeat;
947		1109
948	ev_stop ((W)w);	1110	ev_stop (EV_A_ (W)w);
949	}	1111	}
950		1112
951	void	1113	void
952	ev_timer_again (struct ev_timer *w)	1114	ev_timer_again (EV_P_ struct ev_timer *w)
953	{	1115	{
954	if (ev_is_active (w))	1116	if (ev_is_active (w))
955	{	1117	{
956	if (w->repeat)	1118	if (w->repeat)
957	{	1119	{
958	w->at = now + w->repeat;	1120	w->at = mn_now + w->repeat;
959	downheap ((WT *)timers, timercnt, w->active - 1);	1121	downheap ((WT *)timers, timercnt, w->active - 1);
960	}	1122	}
961	else	1123	else
962	ev_timer_stop (w);	1124	ev_timer_stop (EV_A_ w);
963	}	1125	}
964	else if (w->repeat)	1126	else if (w->repeat)
965	ev_timer_start (w);	1127	ev_timer_start (EV_A_ w);
966	}	1128	}
967		1129
968	void	1130	void
969	ev_periodic_start (struct ev_periodic *w)	1131	ev_periodic_start (EV_P_ struct ev_periodic *w)
970	{	1132	{
971	if (ev_is_active (w))	1133	if (ev_is_active (w))
972	return;	1134	return;
973		1135
974	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1136	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
975		1137
976	/* this formula differs from the one in periodic_reify because we do not always round up */	1138	/* this formula differs from the one in periodic_reify because we do not always round up */
977	if (w->interval)	1139	if (w->interval)
978	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1140	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
979		1141
980	ev_start ((W)w, ++periodiccnt);	1142	ev_start (EV_A_ (W)w, ++periodiccnt);
981	array_needsize (periodics, periodicmax, periodiccnt, );	1143	array_needsize (periodics, periodicmax, periodiccnt, );
982	periodics [periodiccnt - 1] = w;	1144	periodics [periodiccnt - 1] = w;
983	upheap ((WT *)periodics, periodiccnt - 1);	1145	upheap ((WT *)periodics, periodiccnt - 1);
984	}	1146	}
985		1147
986	void	1148	void
987	ev_periodic_stop (struct ev_periodic *w)	1149	ev_periodic_stop (EV_P_ struct ev_periodic *w)
988	{	1150	{
989	ev_clear_pending ((W)w);	1151	ev_clear_pending (EV_A_ (W)w);
990	if (!ev_is_active (w))	1152	if (!ev_is_active (w))
991	return;	1153	return;
992		1154
993	if (w->active < periodiccnt--)	1155	if (w->active < periodiccnt--)
994	{	1156	{
995	periodics [w->active - 1] = periodics [periodiccnt];	1157	periodics [w->active - 1] = periodics [periodiccnt];
996	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1158	downheap ((WT *)periodics, periodiccnt, w->active - 1);
997	}	1159	}
998		1160
999	ev_stop ((W)w);	1161	ev_stop (EV_A_ (W)w);
1000	}	1162	}
1001		1163
1002	void	1164	void
1003	ev_signal_start (struct ev_signal *w)	1165	ev_idle_start (EV_P_ struct ev_idle *w)
1004	{	1166	{
1005	if (ev_is_active (w))	1167	if (ev_is_active (w))
1006	return;	1168	return;
1007		1169
		1170	ev_start (EV_A_ (W)w, ++idlecnt);
		1171	array_needsize (idles, idlemax, idlecnt, );
		1172	idles [idlecnt - 1] = w;
		1173	}
		1174
		1175	void
		1176	ev_idle_stop (EV_P_ struct ev_idle *w)
		1177	{
		1178	ev_clear_pending (EV_A_ (W)w);
		1179	if (ev_is_active (w))
		1180	return;
		1181
		1182	idles [w->active - 1] = idles [--idlecnt];
		1183	ev_stop (EV_A_ (W)w);
		1184	}
		1185
		1186	void
		1187	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1188	{
		1189	if (ev_is_active (w))
		1190	return;
		1191
		1192	ev_start (EV_A_ (W)w, ++preparecnt);
		1193	array_needsize (prepares, preparemax, preparecnt, );
		1194	prepares [preparecnt - 1] = w;
		1195	}
		1196
		1197	void
		1198	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1199	{
		1200	ev_clear_pending (EV_A_ (W)w);
		1201	if (ev_is_active (w))
		1202	return;
		1203
		1204	prepares [w->active - 1] = prepares [--preparecnt];
		1205	ev_stop (EV_A_ (W)w);
		1206	}
		1207
		1208	void
		1209	ev_check_start (EV_P_ struct ev_check *w)
		1210	{
		1211	if (ev_is_active (w))
		1212	return;
		1213
		1214	ev_start (EV_A_ (W)w, ++checkcnt);
		1215	array_needsize (checks, checkmax, checkcnt, );
		1216	checks [checkcnt - 1] = w;
		1217	}
		1218
		1219	void
		1220	ev_check_stop (EV_P_ struct ev_check *w)
		1221	{
		1222	ev_clear_pending (EV_A_ (W)w);
		1223	if (ev_is_active (w))
		1224	return;
		1225
		1226	checks [w->active - 1] = checks [--checkcnt];
		1227	ev_stop (EV_A_ (W)w);
		1228	}
		1229
		1230	#ifndef SA_RESTART
		1231	# define SA_RESTART 0
		1232	#endif
		1233
		1234	void
		1235	ev_signal_start (EV_P_ struct ev_signal *w)
		1236	{
		1237	#if EV_MULTIPLICITY
		1238	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1239	#endif
		1240	if (ev_is_active (w))
		1241	return;
		1242
1008	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1243	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1009		1244
1010	ev_start ((W)w, 1);	1245	ev_start (EV_A_ (W)w, 1);
1011	array_needsize (signals, signalmax, w->signum, signals_init);	1246	array_needsize (signals, signalmax, w->signum, signals_init);
1012	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1247	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1013		1248
1014	if (!w->next)	1249	if (!w->next)
1015	{	1250	{
1016	struct sigaction sa;	1251	struct sigaction sa;
1017	sa.sa_handler = sighandler;	1252	sa.sa_handler = sighandler;
1018	sigfillset (&sa.sa_mask);	1253	sigfillset (&sa.sa_mask);
1019	sa.sa_flags = 0;	1254	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1020	sigaction (w->signum, &sa, 0);	1255	sigaction (w->signum, &sa, 0);
1021	}	1256	}
1022	}	1257	}
1023		1258
1024	void	1259	void
1025	ev_signal_stop (struct ev_signal *w)	1260	ev_signal_stop (EV_P_ struct ev_signal *w)
1026	{	1261	{
1027	ev_clear_pending ((W)w);	1262	ev_clear_pending (EV_A_ (W)w);
1028	if (!ev_is_active (w))	1263	if (!ev_is_active (w))
1029	return;	1264	return;
1030		1265
1031	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1266	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1032	ev_stop ((W)w);	1267	ev_stop (EV_A_ (W)w);
1033		1268
1034	if (!signals [w->signum - 1].head)	1269	if (!signals [w->signum - 1].head)
1035	signal (w->signum, SIG_DFL);	1270	signal (w->signum, SIG_DFL);
1036	}	1271	}
1037		1272
1038	void	1273	void
1039	ev_idle_start (struct ev_idle *w)	1274	ev_child_start (EV_P_ struct ev_child *w)
1040	{	1275	{
		1276	#if EV_MULTIPLICITY
		1277	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1278	#endif
1041	if (ev_is_active (w))	1279	if (ev_is_active (w))
1042	return;	1280	return;
1043		1281
1044	ev_start ((W)w, ++idlecnt);	1282	ev_start (EV_A_ (W)w, 1);
1045	array_needsize (idles, idlemax, idlecnt, );	1283	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1046	idles [idlecnt - 1] = w;
1047	}	1284	}
1048		1285
1049	void	1286	void
1050	ev_idle_stop (struct ev_idle *w)	1287	ev_child_stop (EV_P_ struct ev_child *w)
1051	{	1288	{
1052	ev_clear_pending ((W)w);	1289	ev_clear_pending (EV_A_ (W)w);
1053	if (ev_is_active (w))	1290	if (ev_is_active (w))
1054	return;	1291	return;
1055		1292
1056	idles [w->active - 1] = idles [--idlecnt];
1057	ev_stop ((W)w);
1058	}
1059
1060	void
1061	ev_prepare_start (struct ev_prepare *w)
1062	{
1063	if (ev_is_active (w))
1064	return;
1065
1066	ev_start ((W)w, ++preparecnt);
1067	array_needsize (prepares, preparemax, preparecnt, );
1068	prepares [preparecnt - 1] = w;
1069	}
1070
1071	void
1072	ev_prepare_stop (struct ev_prepare *w)
1073	{
1074	ev_clear_pending ((W)w);
1075	if (ev_is_active (w))
1076	return;
1077
1078	prepares [w->active - 1] = prepares [--preparecnt];
1079	ev_stop ((W)w);
1080	}
1081
1082	void
1083	ev_check_start (struct ev_check *w)
1084	{
1085	if (ev_is_active (w))
1086	return;
1087
1088	ev_start ((W)w, ++checkcnt);
1089	array_needsize (checks, checkmax, checkcnt, );
1090	checks [checkcnt - 1] = w;
1091	}
1092
1093	void
1094	ev_check_stop (struct ev_check *w)
1095	{
1096	ev_clear_pending ((W)w);
1097	if (ev_is_active (w))
1098	return;
1099
1100	checks [w->active - 1] = checks [--checkcnt];
1101	ev_stop ((W)w);
1102	}
1103
1104	void
1105	ev_child_start (struct ev_child *w)
1106	{
1107	if (ev_is_active (w))
1108	return;
1109
1110	ev_start ((W)w, 1);
1111	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1112	}
1113
1114	void
1115	ev_child_stop (struct ev_child *w)
1116	{
1117	ev_clear_pending ((W)w);
1118	if (ev_is_active (w))
1119	return;
1120
1121	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1293	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1122	ev_stop ((W)w);	1294	ev_stop (EV_A_ (W)w);
1123	}	1295	}
1124		1296
1125	/*****************************************************************************/	1297	/*****************************************************************************/
1126		1298
1127	struct ev_once	1299	struct ev_once
…		…
1131	void (*cb)(int revents, void *arg);	1303	void (*cb)(int revents, void *arg);
1132	void *arg;	1304	void *arg;
1133	};	1305	};
1134		1306
1135	static void	1307	static void
1136	once_cb (struct ev_once *once, int revents)	1308	once_cb (EV_P_ struct ev_once *once, int revents)
1137	{	1309	{
1138	void (*cb)(int revents, void *arg) = once->cb;	1310	void (*cb)(int revents, void *arg) = once->cb;
1139	void *arg = once->arg;	1311	void *arg = once->arg;
1140		1312
1141	ev_io_stop (&once->io);	1313	ev_io_stop (EV_A_ &once->io);
1142	ev_timer_stop (&once->to);	1314	ev_timer_stop (EV_A_ &once->to);
1143	free (once);	1315	free (once);
1144		1316
1145	cb (revents, arg);	1317	cb (revents, arg);
1146	}	1318	}
1147		1319
1148	static void	1320	static void
1149	once_cb_io (struct ev_io *w, int revents)	1321	once_cb_io (EV_P_ struct ev_io *w, int revents)
1150	{	1322	{
1151	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1323	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1152	}	1324	}
1153		1325
1154	static void	1326	static void
1155	once_cb_to (struct ev_timer *w, int revents)	1327	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1156	{	1328	{
1157	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1329	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1158	}	1330	}
1159		1331
1160	void	1332	void
1161	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1333	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1162	{	1334	{
1163	struct ev_once *once = malloc (sizeof (struct ev_once));	1335	struct ev_once *once = malloc (sizeof (struct ev_once));
1164		1336
1165	if (!once)	1337	if (!once)
1166	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1338	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
…		…
1171		1343
1172	ev_watcher_init (&once->io, once_cb_io);	1344	ev_watcher_init (&once->io, once_cb_io);
1173	if (fd >= 0)	1345	if (fd >= 0)
1174	{	1346	{
1175	ev_io_set (&once->io, fd, events);	1347	ev_io_set (&once->io, fd, events);
1176	ev_io_start (&once->io);	1348	ev_io_start (EV_A_ &once->io);
1177	}	1349	}
1178		1350
1179	ev_watcher_init (&once->to, once_cb_to);	1351	ev_watcher_init (&once->to, once_cb_to);
1180	if (timeout >= 0.)	1352	if (timeout >= 0.)
1181	{	1353	{
1182	ev_timer_set (&once->to, timeout, 0.);	1354	ev_timer_set (&once->to, timeout, 0.);
1183	ev_timer_start (&once->to);	1355	ev_timer_start (EV_A_ &once->to);
1184	}	1356	}
1185	}	1357	}
1186	}	1358	}
1187		1359
1188	/*****************************************************************************/
1189
1190	#if 0
1191
1192	struct ev_io wio;
1193
1194	static void
1195	sin_cb (struct ev_io *w, int revents)
1196	{
1197	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1198	}
1199
1200	static void
1201	ocb (struct ev_timer *w, int revents)
1202	{
1203	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1204	ev_timer_stop (w);
1205	ev_timer_start (w);
1206	}
1207
1208	static void
1209	scb (struct ev_signal *w, int revents)
1210	{
1211	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1212	ev_io_stop (&wio);
1213	ev_io_start (&wio);
1214	}
1215
1216	static void
1217	gcb (struct ev_signal *w, int revents)
1218	{
1219	fprintf (stderr, "generic %x\n", revents);
1220
1221	}
1222
1223	int main (void)
1224	{
1225	ev_init (0);
1226
1227	ev_io_init (&wio, sin_cb, 0, EV_READ);
1228	ev_io_start (&wio);
1229
1230	struct ev_timer t[10000];
1231
1232	#if 0
1233	int i;
1234	for (i = 0; i < 10000; ++i)
1235	{
1236	struct ev_timer *w = t + i;
1237	ev_watcher_init (w, ocb, i);
1238	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1239	ev_timer_start (w);
1240	if (drand48 () < 0.5)
1241	ev_timer_stop (w);
1242	}
1243	#endif
1244
1245	struct ev_timer t1;
1246	ev_timer_init (&t1, ocb, 5, 10);
1247	ev_timer_start (&t1);
1248
1249	struct ev_signal sig;
1250	ev_signal_init (&sig, scb, SIGQUIT);
1251	ev_signal_start (&sig);
1252
1253	struct ev_check cw;
1254	ev_check_init (&cw, gcb);
1255	ev_check_start (&cw);
1256
1257	struct ev_idle iw;
1258	ev_idle_init (&iw, gcb);
1259	ev_idle_start (&iw);
1260
1261	ev_loop (0);
1262
1263	return 0;
1264	}
1265
1266	#endif
1267
1268
1269
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