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

Comparing libev/ev.c (file contents):
Revision 1.45 by root, Sat Nov 3 09:19:58 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>
…		…
113		113
114	typedef struct ev_watcher *W;	114	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	115	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	116	typedef struct ev_watcher_time *WT;
117		117
118	static ev_tstamp now_floor, now, diff; /* monotonic clock */	118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119	ev_tstamp ev_now;
120	int ev_method;
121
122	static int have_monotonic; /* runtime */
123
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
125	static void (*method_modify)(int fd, int oev, int nev);
126	static void (*method_poll)(ev_tstamp timeout);
127		119
128	/*****************************************************************************/	120	/*****************************************************************************/
129		121
130	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
131	ev_time (void)	156	ev_time (void)
132	{	157	{
133	#if EV_USE_REALTIME	158	#if EV_USE_REALTIME
134	struct timespec ts;	159	struct timespec ts;
135	clock_gettime (CLOCK_REALTIME, &ts);	160	clock_gettime (CLOCK_REALTIME, &ts);
…		…
139	gettimeofday (&tv, 0);	164	gettimeofday (&tv, 0);
140	return tv.tv_sec + tv.tv_usec * 1e-6;	165	return tv.tv_sec + tv.tv_usec * 1e-6;
141	#endif	166	#endif
142	}	167	}
143		168
144	static ev_tstamp	169	inline ev_tstamp
145	get_clock (void)	170	get_clock (void)
146	{	171	{
147	#if EV_USE_MONOTONIC	172	#if EV_USE_MONOTONIC
148	if (expect_true (have_monotonic))	173	if (expect_true (have_monotonic))
149	{	174	{
…		…
152	return ts.tv_sec + ts.tv_nsec * 1e-9;	177	return ts.tv_sec + ts.tv_nsec * 1e-9;
153	}	178	}
154	#endif	179	#endif
155		180
156	return ev_time ();	181	return ev_time ();
		182	}
		183
		184	ev_tstamp
		185	ev_now (EV_P)
		186	{
		187	return rt_now;
157	}	188	}
158		189
159	#define array_roundsize(base,n) ((n) \| 4 & ~3)	190	#define array_roundsize(base,n) ((n) \| 4 & ~3)
160		191
161	#define array_needsize(base,cur,cnt,init) \	192	#define array_needsize(base,cur,cnt,init) \
…		…
173	cur = newcnt; \	204	cur = newcnt; \
174	}	205	}
175		206
176	/*****************************************************************************/	207	/*****************************************************************************/
177		208
178	typedef struct
179	{
180	struct ev_io *head;
181	unsigned char events;
182	unsigned char reify;
183	} ANFD;
184
185	static ANFD *anfds;
186	static int anfdmax;
187
188	static void	209	static void
189	anfds_init (ANFD *base, int count)	210	anfds_init (ANFD *base, int count)
190	{	211	{
191	while (count--)	212	while (count--)
192	{	213	{
…		…
196		217
197	++base;	218	++base;
198	}	219	}
199	}	220	}
200		221
201	typedef struct
202	{
203	W w;
204	int events;
205	} ANPENDING;
206
207	static ANPENDING *pendings [NUMPRI];
208	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
209
210	static void	222	static void
211	event (W w, int events)	223	event (EV_P_ W w, int events)
212	{	224	{
213	if (w->pending)	225	if (w->pending)
214	{	226	{
215	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	227	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
216	return;	228	return;
…		…
221	pendings [ABSPRI (w)][w->pending - 1].w = w;	233	pendings [ABSPRI (w)][w->pending - 1].w = w;
222	pendings [ABSPRI (w)][w->pending - 1].events = events;	234	pendings [ABSPRI (w)][w->pending - 1].events = events;
223	}	235	}
224		236
225	static void	237	static void
226	queue_events (W *events, int eventcnt, int type)	238	queue_events (EV_P_ W *events, int eventcnt, int type)
227	{	239	{
228	int i;	240	int i;
229		241
230	for (i = 0; i < eventcnt; ++i)	242	for (i = 0; i < eventcnt; ++i)
231	event (events [i], type);	243	event (EV_A_ events [i], type);
232	}	244	}
233		245
234	static void	246	static void
235	fd_event (int fd, int events)	247	fd_event (EV_P_ int fd, int events)
236	{	248	{
237	ANFD *anfd = anfds + fd;	249	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	250	struct ev_io *w;
239		251
240	for (w = anfd->head; w; w = w->next)	252	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
241	{	253	{
242	int ev = w->events & events;	254	int ev = w->events & events;
243		255
244	if (ev)	256	if (ev)
245	event ((W)w, ev);	257	event (EV_A_ (W)w, ev);
246	}	258	}
247	}	259	}
248		260
249	/*****************************************************************************/	261	/*****************************************************************************/
250		262
251	static int *fdchanges;
252	static int fdchangemax, fdchangecnt;
253
254	static void	263	static void
255	fd_reify (void)	264	fd_reify (EV_P)
256	{	265	{
257	int i;	266	int i;
258		267
259	for (i = 0; i < fdchangecnt; ++i)	268	for (i = 0; i < fdchangecnt; ++i)
260	{	269	{
…		…
262	ANFD *anfd = anfds + fd;	271	ANFD *anfd = anfds + fd;
263	struct ev_io *w;	272	struct ev_io *w;
264		273
265	int events = 0;	274	int events = 0;
266		275
267	for (w = anfd->head; w; w = w->next)	276	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
268	events \|= w->events;	277	events \|= w->events;
269		278
270	anfd->reify = 0;	279	anfd->reify = 0;
271		280
272	if (anfd->events != events)	281	if (anfd->events != events)
273	{	282	{
274	method_modify (fd, anfd->events, events);	283	method_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	284	anfd->events = events;
276	}	285	}
277	}	286	}
278		287
279	fdchangecnt = 0;	288	fdchangecnt = 0;
280	}	289	}
281		290
282	static void	291	static void
283	fd_change (int fd)	292	fd_change (EV_P_ int fd)
284	{	293	{
285	if (anfds [fd].reify \|\| fdchangecnt < 0)	294	if (anfds [fd].reify \|\| fdchangecnt < 0)
286	return;	295	return;
287		296
288	anfds [fd].reify = 1;	297	anfds [fd].reify = 1;
…		…
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
292	fdchanges [fdchangecnt - 1] = fd;	301	fdchanges [fdchangecnt - 1] = fd;
293	}	302	}
294		303
295	static void	304	static void
296	fd_kill (int fd)	305	fd_kill (EV_P_ int fd)
297	{	306	{
298	struct ev_io *w;	307	struct ev_io *w;
299		308
300	printf ("killing fd %d\n", fd);//D
301	while ((w = anfds [fd].head))	309	while ((w = (struct ev_io *)anfds [fd].head))
302	{	310	{
303	ev_io_stop (w);	311	ev_io_stop (EV_A_ w);
304	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	312	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
305	}	313	}
306	}	314	}
307		315
308	/* called on EBADF to verify fds */	316	/* called on EBADF to verify fds */
309	static void	317	static void
310	fd_ebadf (void)	318	fd_ebadf (EV_P)
311	{	319	{
312	int fd;	320	int fd;
313		321
314	for (fd = 0; fd < anfdmax; ++fd)	322	for (fd = 0; fd < anfdmax; ++fd)
315	if (anfds [fd].events)	323	if (anfds [fd].events)
316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
317	fd_kill (fd);	325	fd_kill (EV_A_ fd);
318	}	326	}
319		327
320	/* 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 */
321	static void	329	static void
322	fd_enomem (void)	330	fd_enomem (EV_P)
323	{	331	{
324	int fd = anfdmax;	332	int fd = anfdmax;
325		333
326	while (fd--)	334	while (fd--)
327	if (anfds [fd].events)	335	if (anfds [fd].events)
328	{	336	{
329	close (fd);	337	close (fd);
330	fd_kill (fd);	338	fd_kill (EV_A_ fd);
331	return;	339	return;
332	}	340	}
333	}	341	}
334		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
335	/*****************************************************************************/	358	/*****************************************************************************/
336		359
337	static struct ev_timer **timers;
338	static int timermax, timercnt;
339
340	static struct ev_periodic **periodics;
341	static int periodicmax, periodiccnt;
342
343	static void	360	static void
344	upheap (WT *timers, int k)	361	upheap (WT *heap, int k)
345	{	362	{
346	WT w = timers [k];	363	WT w = heap [k];
347		364
348	while (k && timers [k >> 1]->at > w->at)	365	while (k && heap [k >> 1]->at > w->at)
349	{	366	{
350	timers [k] = timers [k >> 1];	367	heap [k] = heap [k >> 1];
351	timers [k]->active = k + 1;	368	heap [k]->active = k + 1;
352	k >>= 1;	369	k >>= 1;
353	}	370	}
354		371
355	timers [k] = w;	372	heap [k] = w;
356	timers [k]->active = k + 1;	373	heap [k]->active = k + 1;
357		374
358	}	375	}
359		376
360	static void	377	static void
361	downheap (WT *timers, int N, int k)	378	downheap (WT *heap, int N, int k)
362	{	379	{
363	WT w = timers [k];	380	WT w = heap [k];
364		381
365	while (k < (N >> 1))	382	while (k < (N >> 1))
366	{	383	{
367	int j = k << 1;	384	int j = k << 1;
368		385
369	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	386	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
370	++j;	387	++j;
371		388
372	if (w->at <= timers [j]->at)	389	if (w->at <= heap [j]->at)
373	break;	390	break;
374		391
375	timers [k] = timers [j];	392	heap [k] = heap [j];
376	timers [k]->active = k + 1;	393	heap [k]->active = k + 1;
377	k = j;	394	k = j;
378	}	395	}
379		396
380	timers [k] = w;	397	heap [k] = w;
381	timers [k]->active = k + 1;	398	heap [k]->active = k + 1;
382	}	399	}
383		400
384	/*****************************************************************************/	401	/*****************************************************************************/
385		402
386	typedef struct	403	typedef struct
387	{	404	{
388	struct ev_signal *head;	405	struct ev_watcher_list *head;
389	sig_atomic_t volatile gotsig;	406	sig_atomic_t volatile gotsig;
390	} ANSIG;	407	} ANSIG;
391		408
392	static ANSIG *signals;	409	static ANSIG *signals;
393	static int signalmax;	410	static int signalmax;
…		…
413	{	430	{
414	signals [signum - 1].gotsig = 1;	431	signals [signum - 1].gotsig = 1;
415		432
416	if (!gotsig)	433	if (!gotsig)
417	{	434	{
		435	int old_errno = errno;
418	gotsig = 1;	436	gotsig = 1;
419	write (sigpipe [1], &signum, 1);	437	write (sigpipe [1], &signum, 1);
		438	errno = old_errno;
420	}	439	}
421	}	440	}
422		441
423	static void	442	static void
424	sigcb (struct ev_io *iow, int revents)	443	sigcb (EV_P_ struct ev_io *iow, int revents)
425	{	444	{
426	struct ev_signal *w;	445	struct ev_watcher_list *w;
427	int signum;	446	int signum;
428		447
429	read (sigpipe [0], &revents, 1);	448	read (sigpipe [0], &revents, 1);
430	gotsig = 0;	449	gotsig = 0;
431		450
…		…
433	if (signals [signum].gotsig)	452	if (signals [signum].gotsig)
434	{	453	{
435	signals [signum].gotsig = 0;	454	signals [signum].gotsig = 0;
436		455
437	for (w = signals [signum].head; w; w = w->next)	456	for (w = signals [signum].head; w; w = w->next)
438	event ((W)w, EV_SIGNAL);	457	event (EV_A_ (W)w, EV_SIGNAL);
439	}	458	}
440	}	459	}
441		460
442	static void	461	static void
443	siginit (void)	462	siginit (EV_P)
444	{	463	{
445	#ifndef WIN32	464	#ifndef WIN32
446	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	465	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
447	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	466	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
448		467
…		…
450	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	469	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
451	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	470	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
452	#endif	471	#endif
453		472
454	ev_io_set (&sigev, sigpipe [0], EV_READ);	473	ev_io_set (&sigev, sigpipe [0], EV_READ);
455	ev_io_start (&sigev);	474	ev_io_start (EV_A_ &sigev);
		475	ev_unref (EV_A); /* child watcher should not keep loop alive */
456	}	476	}
457		477
458	/*****************************************************************************/	478	/*****************************************************************************/
459		479
460	static struct ev_idle **idles;	480	#ifndef WIN32
461	static int idlemax, idlecnt;
462
463	static struct ev_prepare **prepares;
464	static int preparemax, preparecnt;
465
466	static struct ev_check **checks;
467	static int checkmax, checkcnt;
468
469	/*****************************************************************************/
470		481
471	static struct ev_child *childs [PID_HASHSIZE];	482	static struct ev_child *childs [PID_HASHSIZE];
472	static struct ev_signal childev;	483	static struct ev_signal childev;
473		484
474	#ifndef WIN32
475
476	#ifndef WCONTINUED	485	#ifndef WCONTINUED
477	# define WCONTINUED 0	486	# define WCONTINUED 0
478	#endif	487	#endif
479		488
480	static void	489	static void
481	childcb (struct ev_signal *sw, int revents)	490	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
482	{	491	{
483	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	{
484	int pid, status;	507	int pid, status;
485		508
486	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	509	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
487	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	510	{
488	if (w->pid == pid \|\| !w->pid)	511	/* make sure we are called again until all childs have been reaped */
489	{	512	event (EV_A_ (W)sw, EV_SIGNAL);
490	w->status = status;	513
491	event ((W)w, EV_CHILD);	514	child_reap (EV_A_ sw, pid, pid, status);
492	}	515	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		516	}
493	}	517	}
494		518
495	#endif	519	#endif
496		520
497	/*****************************************************************************/	521	/*****************************************************************************/
…		…
519	ev_version_minor (void)	543	ev_version_minor (void)
520	{	544	{
521	return EV_VERSION_MINOR;	545	return EV_VERSION_MINOR;
522	}	546	}
523		547
524	/* 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 */
525	static int	549	static int
526	enable_secure ()	550	enable_secure (void)
527	{	551	{
		552	#ifdef WIN32
		553	return 0;
		554	#else
528	return getuid () != geteuid ()	555	return getuid () != geteuid ()
529	\|\| getgid () != getegid ();	556	\|\| getgid () != getegid ();
		557	#endif
530	}	558	}
531		559
532	int ev_init (int methods)	560	int
		561	ev_method (EV_P)
533	{	562	{
		563	return method;
		564	}
		565
		566	static void
		567	loop_init (EV_P_ int methods)
		568	{
534	if (!ev_method)	569	if (!method)
535	{	570	{
536	#if EV_USE_MONOTONIC	571	#if EV_USE_MONOTONIC
537	{	572	{
538	struct timespec ts;	573	struct timespec ts;
539	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	574	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
540	have_monotonic = 1;	575	have_monotonic = 1;
541	}	576	}
542	#endif	577	#endif
543		578
544	ev_now = ev_time ();	579	rt_now = ev_time ();
545	now = get_clock ();	580	mn_now = get_clock ();
546	now_floor = now;	581	now_floor = mn_now;
547	diff = ev_now - now;	582	rtmn_diff = rt_now - mn_now;
548
549	if (pipe (sigpipe))
550	return 0;
551		583
552	if (methods == EVMETHOD_AUTO)	584	if (methods == EVMETHOD_AUTO)
553	if (!enable_secure () && getenv ("LIBEV_METHODS"))	585	if (!enable_secure () && getenv ("LIBEV_METHODS"))
554	methods = atoi (getenv ("LIBEV_METHODS"));	586	methods = atoi (getenv ("LIBEV_METHODS"));
555	else	587	else
556	methods = EVMETHOD_ANY;	588	methods = EVMETHOD_ANY;
557		589
558	ev_method = 0;	590	method = 0;
559	#if EV_USE_KQUEUE	591	#if EV_USE_KQUEUE
560	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	592	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
561	#endif	593	#endif
562	#if EV_USE_EPOLL	594	#if EV_USE_EPOLL
563	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	595	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
564	#endif	596	#endif
565	#if EV_USE_POLL	597	#if EV_USE_POLL
566	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	598	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
567	#endif	599	#endif
568	#if EV_USE_SELECT	600	#if EV_USE_SELECT
569	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	601	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
570	#endif	602	#endif
		603	}
		604	}
571		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
572	if (ev_method)	693	if (ev_method (EV_A))
573	{	694	{
574	ev_watcher_init (&sigev, sigcb);	695	ev_watcher_init (&sigev, sigcb);
		696	ev_set_priority (&sigev, EV_MAXPRI);
575	siginit ();	697	siginit (EV_A);
576		698
577	#ifndef WIN32	699	#ifndef WIN32
578	ev_signal_init (&childev, childcb, SIGCHLD);	700	ev_signal_init (&childev, childcb, SIGCHLD);
		701	ev_set_priority (&childev, EV_MAXPRI);
579	ev_signal_start (&childev);	702	ev_signal_start (EV_A_ &childev);
		703	ev_unref (EV_A); /* child watcher should not keep loop alive */
580	#endif	704	#endif
581	}	705	}
		706	else
		707	default_loop = 0;
582	}	708	}
583		709
584	return ev_method;	710	return default_loop;
585	}	711	}
586		712
587	/*****************************************************************************/
588
589	void	713	void
590	ev_fork_prepare (void)	714	ev_default_destroy (void)
591	{	715	{
592	/* nop */	716	#if EV_MULTIPLICITY
593	}	717	struct ev_loop *loop = default_loop;
594
595	void
596	ev_fork_parent (void)
597	{
598	/* nop */
599	}
600
601	void
602	ev_fork_child (void)
603	{
604	#if EV_USE_EPOLL
605	if (ev_method == EVMETHOD_EPOLL)
606	epoll_postfork_child ();
607	#endif	718	#endif
608		719
		720	ev_ref (EV_A); /* child watcher */
		721	ev_signal_stop (EV_A_ &childev);
		722
		723	ev_ref (EV_A); /* signal watcher */
609	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);
610	close (sigpipe [0]);	738	close (sigpipe [0]);
611	close (sigpipe [1]);	739	close (sigpipe [1]);
612	pipe (sigpipe);	740	pipe (sigpipe);
		741
		742	ev_ref (EV_A); /* signal watcher */
613	siginit ();	743	siginit (EV_A);
614	}	744	}
615		745
616	/*****************************************************************************/	746	/*****************************************************************************/
617		747
618	static void	748	static void
619	call_pending (void)	749	call_pending (EV_P)
620	{	750	{
621	int pri;	751	int pri;
622		752
623	for (pri = NUMPRI; pri--; )	753	for (pri = NUMPRI; pri--; )
624	while (pendingcnt [pri])	754	while (pendingcnt [pri])
…		…
626	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	756	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
627		757
628	if (p->w)	758	if (p->w)
629	{	759	{
630	p->w->pending = 0;	760	p->w->pending = 0;
631	p->w->cb (p->w, p->events);	761	p->w->cb (EV_A_ p->w, p->events);
632	}	762	}
633	}	763	}
634	}	764	}
635		765
636	static void	766	static void
637	timers_reify (void)	767	timers_reify (EV_P)
638	{	768	{
639	while (timercnt && timers [0]->at <= now)	769	while (timercnt && timers [0]->at <= mn_now)
640	{	770	{
641	struct ev_timer *w = timers [0];	771	struct ev_timer *w = timers [0];
642		772
643	/* first reschedule or stop timer */	773	/* first reschedule or stop timer */
644	if (w->repeat)	774	if (w->repeat)
645	{	775	{
646	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.));
647	w->at = now + w->repeat;	777	w->at = mn_now + w->repeat;
648	downheap ((WT *)timers, timercnt, 0);	778	downheap ((WT *)timers, timercnt, 0);
649	}	779	}
650	else	780	else
651	ev_timer_stop (w); /* nonrepeating: stop timer */	781	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
652		782
653	event ((W)w, EV_TIMEOUT);	783	event (EV_A_ (W)w, EV_TIMEOUT);
654	}	784	}
655	}	785	}
656		786
657	static void	787	static void
658	periodics_reify (void)	788	periodics_reify (EV_P)
659	{	789	{
660	while (periodiccnt && periodics [0]->at <= ev_now)	790	while (periodiccnt && periodics [0]->at <= rt_now)
661	{	791	{
662	struct ev_periodic *w = periodics [0];	792	struct ev_periodic *w = periodics [0];
663		793
664	/* first reschedule or stop timer */	794	/* first reschedule or stop timer */
665	if (w->interval)	795	if (w->interval)
666	{	796	{
667	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;
668	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));
669	downheap ((WT *)periodics, periodiccnt, 0);	799	downheap ((WT *)periodics, periodiccnt, 0);
670	}	800	}
671	else	801	else
672	ev_periodic_stop (w); /* nonrepeating: stop timer */	802	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
673		803
674	event ((W)w, EV_PERIODIC);	804	event (EV_A_ (W)w, EV_PERIODIC);
675	}	805	}
676	}	806	}
677		807
678	static void	808	static void
679	periodics_reschedule (ev_tstamp diff)	809	periodics_reschedule (EV_P)
680	{	810	{
681	int i;	811	int i;
682		812
683	/* adjust periodics after time jump */	813	/* adjust periodics after time jump */
684	for (i = 0; i < periodiccnt; ++i)	814	for (i = 0; i < periodiccnt; ++i)
685	{	815	{
686	struct ev_periodic *w = periodics [i];	816	struct ev_periodic *w = periodics [i];
687		817
688	if (w->interval)	818	if (w->interval)
689	{	819	{
690	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;
691		821
692	if (fabs (diff) >= 1e-4)	822	if (fabs (diff) >= 1e-4)
693	{	823	{
694	ev_periodic_stop (w);	824	ev_periodic_stop (EV_A_ w);
695	ev_periodic_start (w);	825	ev_periodic_start (EV_A_ w);
696		826
697	i = 0; /* restart loop, inefficient, but time jumps should be rare */	827	i = 0; /* restart loop, inefficient, but time jumps should be rare */
698	}	828	}
699	}	829	}
700	}	830	}
701	}	831	}
702		832
703	static int	833	inline int
704	time_update_monotonic (void)	834	time_update_monotonic (EV_P)
705	{	835	{
706	now = get_clock ();	836	mn_now = get_clock ();
707		837
708	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	838	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
709	{	839	{
710	ev_now = now + diff;	840	rt_now = rtmn_diff + mn_now;
711	return 0;	841	return 0;
712	}	842	}
713	else	843	else
714	{	844	{
715	now_floor = now;	845	now_floor = mn_now;
716	ev_now = ev_time ();	846	rt_now = ev_time ();
717	return 1;	847	return 1;
718	}	848	}
719	}	849	}
720		850
721	static void	851	static void
722	time_update (void)	852	time_update (EV_P)
723	{	853	{
724	int i;	854	int i;
725		855
726	#if EV_USE_MONOTONIC	856	#if EV_USE_MONOTONIC
727	if (expect_true (have_monotonic))	857	if (expect_true (have_monotonic))
728	{	858	{
729	if (time_update_monotonic ())	859	if (time_update_monotonic (EV_A))
730	{	860	{
731	ev_tstamp odiff = diff;	861	ev_tstamp odiff = rtmn_diff;
732		862
733	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 */
734	{	864	{
735	diff = ev_now - now;	865	rtmn_diff = rt_now - mn_now;
736		866
737	if (fabs (odiff - diff) < MIN_TIMEJUMP)	867	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
738	return; /* all is well */	868	return; /* all is well */
739		869
740	ev_now = ev_time ();	870	rt_now = ev_time ();
741	now = get_clock ();	871	mn_now = get_clock ();
742	now_floor = now;	872	now_floor = mn_now;
743	}	873	}
744		874
745	periodics_reschedule (diff - odiff);	875	periodics_reschedule (EV_A);
746	/* 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) */
747	}	878	}
748	}	879	}
749	else	880	else
750	#endif	881	#endif
751	{	882	{
752	ev_now = ev_time ();	883	rt_now = ev_time ();
753		884
754	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))
755	{	886	{
756	periodics_reschedule (ev_now - now);	887	periodics_reschedule (EV_A);
757		888
758	/* 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 */
759	for (i = 0; i < timercnt; ++i)	890	for (i = 0; i < timercnt; ++i)
760	timers [i]->at += diff;	891	timers [i]->at += rt_now - mn_now;
761	}	892	}
762		893
763	now = ev_now;	894	mn_now = rt_now;
764	}	895	}
765	}	896	}
766		897
767	int ev_loop_done;	898	void
		899	ev_ref (EV_P)
		900	{
		901	++activecnt;
		902	}
768		903
		904	void
		905	ev_unref (EV_P)
		906	{
		907	--activecnt;
		908	}
		909
		910	static int loop_done;
		911
		912	void
769	void ev_loop (int flags)	913	ev_loop (EV_P_ int flags)
770	{	914	{
771	double block;	915	double block;
772	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	916	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
773		917
774	do	918	do
775	{	919	{
776	/* queue check watchers (and execute them) */	920	/* queue check watchers (and execute them) */
777	if (expect_false (preparecnt))	921	if (expect_false (preparecnt))
778	{	922	{
779	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	923	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
780	call_pending ();	924	call_pending (EV_A);
781	}	925	}
782		926
783	/* update fd-related kernel structures */	927	/* update fd-related kernel structures */
784	fd_reify ();	928	fd_reify (EV_A);
785		929
786	/* calculate blocking time */	930	/* calculate blocking time */
787		931
788	/* 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
789	always have timers, we just calculate it always */	933	always have timers, we just calculate it always */
790	#if EV_USE_MONOTONIC	934	#if EV_USE_MONOTONIC
791	if (expect_true (have_monotonic))	935	if (expect_true (have_monotonic))
792	time_update_monotonic ();	936	time_update_monotonic (EV_A);
793	else	937	else
794	#endif	938	#endif
795	{	939	{
796	ev_now = ev_time ();	940	rt_now = ev_time ();
797	now = ev_now;	941	mn_now = rt_now;
798	}	942	}
799		943
800	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	944	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
801	block = 0.;	945	block = 0.;
802	else	946	else
803	{	947	{
804	block = MAX_BLOCKTIME;	948	block = MAX_BLOCKTIME;
805		949
806	if (timercnt)	950	if (timercnt)
807	{	951	{
808	ev_tstamp to = timers [0]->at - now + method_fudge;	952	ev_tstamp to = timers [0]->at - mn_now + method_fudge;
809	if (block > to) block = to;	953	if (block > to) block = to;
810	}	954	}
811		955
812	if (periodiccnt)	956	if (periodiccnt)
813	{	957	{
814	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	958	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
815	if (block > to) block = to;	959	if (block > to) block = to;
816	}	960	}
817		961
818	if (block < 0.) block = 0.;	962	if (block < 0.) block = 0.;
819	}	963	}
820		964
821	method_poll (block);	965	method_poll (EV_A_ block);
822		966
823	/* update ev_now, do magic */	967	/* update rt_now, do magic */
824	time_update ();	968	time_update (EV_A);
825		969
826	/* queue pending timers and reschedule them */	970	/* queue pending timers and reschedule them */
827	timers_reify (); /* relative timers called last */	971	timers_reify (EV_A); /* relative timers called last */
828	periodics_reify (); /* absolute timers called first */	972	periodics_reify (EV_A); /* absolute timers called first */
829		973
830	/* queue idle watchers unless io or timers are pending */	974	/* queue idle watchers unless io or timers are pending */
831	if (!pendingcnt)	975	if (!pendingcnt)
832	queue_events ((W *)idles, idlecnt, EV_IDLE);	976	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
833		977
834	/* queue check watchers, to be executed first */	978	/* queue check watchers, to be executed first */
835	if (checkcnt)	979	if (checkcnt)
836	queue_events ((W *)checks, checkcnt, EV_CHECK);	980	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
837		981
838	call_pending ();	982	call_pending (EV_A);
839	}	983	}
840	while (!ev_loop_done);	984	while (activecnt && !loop_done);
841		985
842	if (ev_loop_done != 2)	986	if (loop_done != 2)
843	ev_loop_done = 0;	987	loop_done = 0;
		988	}
		989
		990	void
		991	ev_unloop (EV_P_ int how)
		992	{
		993	loop_done = how;
844	}	994	}
845		995
846	/*****************************************************************************/	996	/*****************************************************************************/
847		997
848	static void	998	inline void
849	wlist_add (WL *head, WL elem)	999	wlist_add (WL *head, WL elem)
850	{	1000	{
851	elem->next = *head;	1001	elem->next = *head;
852	*head = elem;	1002	*head = elem;
853	}	1003	}
854		1004
855	static void	1005	inline void
856	wlist_del (WL *head, WL elem)	1006	wlist_del (WL *head, WL elem)
857	{	1007	{
858	while (*head)	1008	while (*head)
859	{	1009	{
860	if (*head == elem)	1010	if (*head == elem)
…		…
865		1015
866	head = &(*head)->next;	1016	head = &(*head)->next;
867	}	1017	}
868	}	1018	}
869		1019
870	static void	1020	inline void
871	ev_clear_pending (W w)	1021	ev_clear_pending (EV_P_ W w)
872	{	1022	{
873	if (w->pending)	1023	if (w->pending)
874	{	1024	{
875	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1025	pendings [ABSPRI (w)][w->pending - 1].w = 0;
876	w->pending = 0;	1026	w->pending = 0;
877	}	1027	}
878	}	1028	}
879		1029
880	static void	1030	inline void
881	ev_start (W w, int active)	1031	ev_start (EV_P_ W w, int active)
882	{	1032	{
883	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1033	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
884	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1034	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
885		1035
886	w->active = active;	1036	w->active = active;
		1037	ev_ref (EV_A);
887	}	1038	}
888		1039
889	static void	1040	inline void
890	ev_stop (W w)	1041	ev_stop (EV_P_ W w)
891	{	1042	{
		1043	ev_unref (EV_A);
892	w->active = 0;	1044	w->active = 0;
893	}	1045	}
894		1046
895	/*****************************************************************************/	1047	/*****************************************************************************/
896		1048
897	void	1049	void
898	ev_io_start (struct ev_io *w)	1050	ev_io_start (EV_P_ struct ev_io *w)
899	{	1051	{
900	int fd = w->fd;	1052	int fd = w->fd;
901		1053
902	if (ev_is_active (w))	1054	if (ev_is_active (w))
903	return;	1055	return;
904		1056
905	assert (("ev_io_start called with negative fd", fd >= 0));	1057	assert (("ev_io_start called with negative fd", fd >= 0));
906		1058
907	ev_start ((W)w, 1);	1059	ev_start (EV_A_ (W)w, 1);
908	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1060	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
909	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1061	wlist_add ((WL *)&anfds[fd].head, (WL)w);
910		1062
911	fd_change (fd);	1063	fd_change (EV_A_ fd);
912	}	1064	}
913		1065
914	void	1066	void
915	ev_io_stop (struct ev_io *w)	1067	ev_io_stop (EV_P_ struct ev_io *w)
916	{	1068	{
917	ev_clear_pending ((W)w);	1069	ev_clear_pending (EV_A_ (W)w);
918	if (!ev_is_active (w))	1070	if (!ev_is_active (w))
919	return;	1071	return;
920		1072
921	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1073	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
922	ev_stop ((W)w);	1074	ev_stop (EV_A_ (W)w);
923		1075
924	fd_change (w->fd);	1076	fd_change (EV_A_ w->fd);
925	}	1077	}
926		1078
927	void	1079	void
928	ev_timer_start (struct ev_timer *w)	1080	ev_timer_start (EV_P_ struct ev_timer *w)
929	{	1081	{
930	if (ev_is_active (w))	1082	if (ev_is_active (w))
931	return;	1083	return;
932		1084
933	w->at += now;	1085	w->at += mn_now;
934		1086
935	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.));
936		1088
937	ev_start ((W)w, ++timercnt);	1089	ev_start (EV_A_ (W)w, ++timercnt);
938	array_needsize (timers, timermax, timercnt, );	1090	array_needsize (timers, timermax, timercnt, );
939	timers [timercnt - 1] = w;	1091	timers [timercnt - 1] = w;
940	upheap ((WT *)timers, timercnt - 1);	1092	upheap ((WT *)timers, timercnt - 1);
941	}	1093	}
942		1094
943	void	1095	void
944	ev_timer_stop (struct ev_timer *w)	1096	ev_timer_stop (EV_P_ struct ev_timer *w)
945	{	1097	{
946	ev_clear_pending ((W)w);	1098	ev_clear_pending (EV_A_ (W)w);
947	if (!ev_is_active (w))	1099	if (!ev_is_active (w))
948	return;	1100	return;
949		1101
950	if (w->active < timercnt--)	1102	if (w->active < timercnt--)
951	{	1103	{
…		…
953	downheap ((WT *)timers, timercnt, w->active - 1);	1105	downheap ((WT *)timers, timercnt, w->active - 1);
954	}	1106	}
955		1107
956	w->at = w->repeat;	1108	w->at = w->repeat;
957		1109
958	ev_stop ((W)w);	1110	ev_stop (EV_A_ (W)w);
959	}	1111	}
960		1112
961	void	1113	void
962	ev_timer_again (struct ev_timer *w)	1114	ev_timer_again (EV_P_ struct ev_timer *w)
963	{	1115	{
964	if (ev_is_active (w))	1116	if (ev_is_active (w))
965	{	1117	{
966	if (w->repeat)	1118	if (w->repeat)
967	{	1119	{
968	w->at = now + w->repeat;	1120	w->at = mn_now + w->repeat;
969	downheap ((WT *)timers, timercnt, w->active - 1);	1121	downheap ((WT *)timers, timercnt, w->active - 1);
970	}	1122	}
971	else	1123	else
972	ev_timer_stop (w);	1124	ev_timer_stop (EV_A_ w);
973	}	1125	}
974	else if (w->repeat)	1126	else if (w->repeat)
975	ev_timer_start (w);	1127	ev_timer_start (EV_A_ w);
976	}	1128	}
977		1129
978	void	1130	void
979	ev_periodic_start (struct ev_periodic *w)	1131	ev_periodic_start (EV_P_ struct ev_periodic *w)
980	{	1132	{
981	if (ev_is_active (w))	1133	if (ev_is_active (w))
982	return;	1134	return;
983		1135
984	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.));
985		1137
986	/* 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 */
987	if (w->interval)	1139	if (w->interval)
988	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1140	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
989		1141
990	ev_start ((W)w, ++periodiccnt);	1142	ev_start (EV_A_ (W)w, ++periodiccnt);
991	array_needsize (periodics, periodicmax, periodiccnt, );	1143	array_needsize (periodics, periodicmax, periodiccnt, );
992	periodics [periodiccnt - 1] = w;	1144	periodics [periodiccnt - 1] = w;
993	upheap ((WT *)periodics, periodiccnt - 1);	1145	upheap ((WT *)periodics, periodiccnt - 1);
994	}	1146	}
995		1147
996	void	1148	void
997	ev_periodic_stop (struct ev_periodic *w)	1149	ev_periodic_stop (EV_P_ struct ev_periodic *w)
998	{	1150	{
999	ev_clear_pending ((W)w);	1151	ev_clear_pending (EV_A_ (W)w);
1000	if (!ev_is_active (w))	1152	if (!ev_is_active (w))
1001	return;	1153	return;
1002		1154
1003	if (w->active < periodiccnt--)	1155	if (w->active < periodiccnt--)
1004	{	1156	{
1005	periodics [w->active - 1] = periodics [periodiccnt];	1157	periodics [w->active - 1] = periodics [periodiccnt];
1006	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1158	downheap ((WT *)periodics, periodiccnt, w->active - 1);
1007	}	1159	}
1008		1160
1009	ev_stop ((W)w);	1161	ev_stop (EV_A_ (W)w);
1010	}	1162	}
1011		1163
1012	void	1164	void
1013	ev_signal_start (struct ev_signal *w)	1165	ev_idle_start (EV_P_ struct ev_idle *w)
1014	{	1166	{
1015	if (ev_is_active (w))	1167	if (ev_is_active (w))
1016	return;	1168	return;
1017		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
1018	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));
1019		1244
1020	ev_start ((W)w, 1);	1245	ev_start (EV_A_ (W)w, 1);
1021	array_needsize (signals, signalmax, w->signum, signals_init);	1246	array_needsize (signals, signalmax, w->signum, signals_init);
1022	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1247	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1023		1248
1024	if (!w->next)	1249	if (!w->next)
1025	{	1250	{
1026	struct sigaction sa;	1251	struct sigaction sa;
1027	sa.sa_handler = sighandler;	1252	sa.sa_handler = sighandler;
1028	sigfillset (&sa.sa_mask);	1253	sigfillset (&sa.sa_mask);
1029	sa.sa_flags = 0;	1254	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1030	sigaction (w->signum, &sa, 0);	1255	sigaction (w->signum, &sa, 0);
1031	}	1256	}
1032	}	1257	}
1033		1258
1034	void	1259	void
1035	ev_signal_stop (struct ev_signal *w)	1260	ev_signal_stop (EV_P_ struct ev_signal *w)
1036	{	1261	{
1037	ev_clear_pending ((W)w);	1262	ev_clear_pending (EV_A_ (W)w);
1038	if (!ev_is_active (w))	1263	if (!ev_is_active (w))
1039	return;	1264	return;
1040		1265
1041	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1266	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1042	ev_stop ((W)w);	1267	ev_stop (EV_A_ (W)w);
1043		1268
1044	if (!signals [w->signum - 1].head)	1269	if (!signals [w->signum - 1].head)
1045	signal (w->signum, SIG_DFL);	1270	signal (w->signum, SIG_DFL);
1046	}	1271	}
1047		1272
1048	void	1273	void
1049	ev_idle_start (struct ev_idle *w)	1274	ev_child_start (EV_P_ struct ev_child *w)
1050	{	1275	{
		1276	#if EV_MULTIPLICITY
		1277	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1278	#endif
1051	if (ev_is_active (w))	1279	if (ev_is_active (w))
1052	return;	1280	return;
1053		1281
1054	ev_start ((W)w, ++idlecnt);	1282	ev_start (EV_A_ (W)w, 1);
1055	array_needsize (idles, idlemax, idlecnt, );	1283	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1056	idles [idlecnt - 1] = w;
1057	}	1284	}
1058		1285
1059	void	1286	void
1060	ev_idle_stop (struct ev_idle *w)	1287	ev_child_stop (EV_P_ struct ev_child *w)
1061	{	1288	{
1062	ev_clear_pending ((W)w);	1289	ev_clear_pending (EV_A_ (W)w);
1063	if (ev_is_active (w))	1290	if (ev_is_active (w))
1064	return;	1291	return;
1065		1292
1066	idles [w->active - 1] = idles [--idlecnt];
1067	ev_stop ((W)w);
1068	}
1069
1070	void
1071	ev_prepare_start (struct ev_prepare *w)
1072	{
1073	if (ev_is_active (w))
1074	return;
1075
1076	ev_start ((W)w, ++preparecnt);
1077	array_needsize (prepares, preparemax, preparecnt, );
1078	prepares [preparecnt - 1] = w;
1079	}
1080
1081	void
1082	ev_prepare_stop (struct ev_prepare *w)
1083	{
1084	ev_clear_pending ((W)w);
1085	if (ev_is_active (w))
1086	return;
1087
1088	prepares [w->active - 1] = prepares [--preparecnt];
1089	ev_stop ((W)w);
1090	}
1091
1092	void
1093	ev_check_start (struct ev_check *w)
1094	{
1095	if (ev_is_active (w))
1096	return;
1097
1098	ev_start ((W)w, ++checkcnt);
1099	array_needsize (checks, checkmax, checkcnt, );
1100	checks [checkcnt - 1] = w;
1101	}
1102
1103	void
1104	ev_check_stop (struct ev_check *w)
1105	{
1106	ev_clear_pending ((W)w);
1107	if (ev_is_active (w))
1108	return;
1109
1110	checks [w->active - 1] = checks [--checkcnt];
1111	ev_stop ((W)w);
1112	}
1113
1114	void
1115	ev_child_start (struct ev_child *w)
1116	{
1117	if (ev_is_active (w))
1118	return;
1119
1120	ev_start ((W)w, 1);
1121	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1122	}
1123
1124	void
1125	ev_child_stop (struct ev_child *w)
1126	{
1127	ev_clear_pending ((W)w);
1128	if (ev_is_active (w))
1129	return;
1130
1131	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1293	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1132	ev_stop ((W)w);	1294	ev_stop (EV_A_ (W)w);
1133	}	1295	}
1134		1296
1135	/*****************************************************************************/	1297	/*****************************************************************************/
1136		1298
1137	struct ev_once	1299	struct ev_once
…		…
1141	void (cb)(int revents, void arg);	1303	void (cb)(int revents, void arg);
1142	void *arg;	1304	void *arg;
1143	};	1305	};
1144		1306
1145	static void	1307	static void
1146	once_cb (struct ev_once *once, int revents)	1308	once_cb (EV_P_ struct ev_once *once, int revents)
1147	{	1309	{
1148	void (cb)(int revents, void arg) = once->cb;	1310	void (cb)(int revents, void arg) = once->cb;
1149	void *arg = once->arg;	1311	void *arg = once->arg;
1150		1312
1151	ev_io_stop (&once->io);	1313	ev_io_stop (EV_A_ &once->io);
1152	ev_timer_stop (&once->to);	1314	ev_timer_stop (EV_A_ &once->to);
1153	free (once);	1315	free (once);
1154		1316
1155	cb (revents, arg);	1317	cb (revents, arg);
1156	}	1318	}
1157		1319
1158	static void	1320	static void
1159	once_cb_io (struct ev_io *w, int revents)	1321	once_cb_io (EV_P_ struct ev_io *w, int revents)
1160	{	1322	{
1161	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);
1162	}	1324	}
1163		1325
1164	static void	1326	static void
1165	once_cb_to (struct ev_timer *w, int revents)	1327	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1166	{	1328	{
1167	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);
1168	}	1330	}
1169		1331
1170	void	1332	void
1171	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)
1172	{	1334	{
1173	struct ev_once *once = malloc (sizeof (struct ev_once));	1335	struct ev_once *once = malloc (sizeof (struct ev_once));
1174		1336
1175	if (!once)	1337	if (!once)
1176	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1338	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
…		…
1181		1343
1182	ev_watcher_init (&once->io, once_cb_io);	1344	ev_watcher_init (&once->io, once_cb_io);
1183	if (fd >= 0)	1345	if (fd >= 0)
1184	{	1346	{
1185	ev_io_set (&once->io, fd, events);	1347	ev_io_set (&once->io, fd, events);
1186	ev_io_start (&once->io);	1348	ev_io_start (EV_A_ &once->io);
1187	}	1349	}
1188		1350
1189	ev_watcher_init (&once->to, once_cb_to);	1351	ev_watcher_init (&once->to, once_cb_to);
1190	if (timeout >= 0.)	1352	if (timeout >= 0.)
1191	{	1353	{
1192	ev_timer_set (&once->to, timeout, 0.);	1354	ev_timer_set (&once->to, timeout, 0.);
1193	ev_timer_start (&once->to);	1355	ev_timer_start (EV_A_ &once->to);
1194	}	1356	}
1195	}	1357	}
1196	}	1358	}
1197		1359
1198	/*****************************************************************************/
1199
1200	#if 0
1201
1202	struct ev_io wio;
1203
1204	static void
1205	sin_cb (struct ev_io *w, int revents)
1206	{
1207	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1208	}
1209
1210	static void
1211	ocb (struct ev_timer *w, int revents)
1212	{
1213	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1214	ev_timer_stop (w);
1215	ev_timer_start (w);
1216	}
1217
1218	static void
1219	scb (struct ev_signal *w, int revents)
1220	{
1221	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1222	ev_io_stop (&wio);
1223	ev_io_start (&wio);
1224	}
1225
1226	static void
1227	gcb (struct ev_signal *w, int revents)
1228	{
1229	fprintf (stderr, "generic %x\n", revents);
1230
1231	}
1232
1233	int main (void)
1234	{
1235	ev_init (0);
1236
1237	ev_io_init (&wio, sin_cb, 0, EV_READ);
1238	ev_io_start (&wio);
1239
1240	struct ev_timer t[10000];
1241
1242	#if 0
1243	int i;
1244	for (i = 0; i < 10000; ++i)
1245	{
1246	struct ev_timer *w = t + i;
1247	ev_watcher_init (w, ocb, i);
1248	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1249	ev_timer_start (w);
1250	if (drand48 () < 0.5)
1251	ev_timer_stop (w);
1252	}
1253	#endif
1254
1255	struct ev_timer t1;
1256	ev_timer_init (&t1, ocb, 5, 10);
1257	ev_timer_start (&t1);
1258
1259	struct ev_signal sig;
1260	ev_signal_init (&sig, scb, SIGQUIT);
1261	ev_signal_start (&sig);
1262
1263	struct ev_check cw;
1264	ev_check_init (&cw, gcb);
1265	ev_check_start (&cw);
1266
1267	struct ev_idle iw;
1268	ev_idle_init (&iw, gcb);
1269	ev_idle_start (&iw);
1270
1271	ev_loop (0);
1272
1273	return 0;
1274	}
1275
1276	#endif
1277
1278
1279
1280

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Comparing libev/ev.c (file contents): Revision 1.45 by root, Sat Nov 3 09:19:58 2007 UTC vs. Revision 1.59 by root, Sun Nov 4 18:15:16 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.45 by root, Sat Nov 3 09:19:58 2007 UTC vs.
Revision 1.59 by root, Sun Nov 4 18:15:16 2007 UTC