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

Comparing libev/ev.c (file contents):
Revision 1.46 by root, Sat Nov 3 09:20:12 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->rpid = pid;	513
491	w->rstatus = status;	514	child_reap (EV_A_ sw, pid, pid, status);
492	event ((W)w, EV_CHILD);	515	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
493	}	516	}
494	}	517	}
495		518
496	#endif	519	#endif
497		520
498	/*****************************************************************************/	521	/*****************************************************************************/
…		…
520	ev_version_minor (void)	543	ev_version_minor (void)
521	{	544	{
522	return EV_VERSION_MINOR;	545	return EV_VERSION_MINOR;
523	}	546	}
524		547
525	/* 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 */
526	static int	549	static int
527	enable_secure ()	550	enable_secure (void)
528	{	551	{
		552	#ifdef WIN32
		553	return 0;
		554	#else
529	return getuid () != geteuid ()	555	return getuid () != geteuid ()
530	\|\| getgid () != getegid ();	556	\|\| getgid () != getegid ();
		557	#endif
531	}	558	}
532		559
533	int ev_init (int methods)	560	int
		561	ev_method (EV_P)
534	{	562	{
		563	return method;
		564	}
		565
		566	static void
		567	loop_init (EV_P_ int methods)
		568	{
535	if (!ev_method)	569	if (!method)
536	{	570	{
537	#if EV_USE_MONOTONIC	571	#if EV_USE_MONOTONIC
538	{	572	{
539	struct timespec ts;	573	struct timespec ts;
540	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	574	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
541	have_monotonic = 1;	575	have_monotonic = 1;
542	}	576	}
543	#endif	577	#endif
544		578
545	ev_now = ev_time ();	579	rt_now = ev_time ();
546	now = get_clock ();	580	mn_now = get_clock ();
547	now_floor = now;	581	now_floor = mn_now;
548	diff = ev_now - now;	582	rtmn_diff = rt_now - mn_now;
549
550	if (pipe (sigpipe))
551	return 0;
552		583
553	if (methods == EVMETHOD_AUTO)	584	if (methods == EVMETHOD_AUTO)
554	if (!enable_secure () && getenv ("LIBEV_METHODS"))	585	if (!enable_secure () && getenv ("LIBEV_METHODS"))
555	methods = atoi (getenv ("LIBEV_METHODS"));	586	methods = atoi (getenv ("LIBEV_METHODS"));
556	else	587	else
557	methods = EVMETHOD_ANY;	588	methods = EVMETHOD_ANY;
558		589
559	ev_method = 0;	590	method = 0;
560	#if EV_USE_KQUEUE	591	#if EV_USE_KQUEUE
561	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	592	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
562	#endif	593	#endif
563	#if EV_USE_EPOLL	594	#if EV_USE_EPOLL
564	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	595	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
565	#endif	596	#endif
566	#if EV_USE_POLL	597	#if EV_USE_POLL
567	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	598	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
568	#endif	599	#endif
569	#if EV_USE_SELECT	600	#if EV_USE_SELECT
570	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	601	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
571	#endif	602	#endif
		603	}
		604	}
572		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
573	if (ev_method)	693	if (ev_method (EV_A))
574	{	694	{
575	ev_watcher_init (&sigev, sigcb);	695	ev_watcher_init (&sigev, sigcb);
		696	ev_set_priority (&sigev, EV_MAXPRI);
576	siginit ();	697	siginit (EV_A);
577		698
578	#ifndef WIN32	699	#ifndef WIN32
579	ev_signal_init (&childev, childcb, SIGCHLD);	700	ev_signal_init (&childev, childcb, SIGCHLD);
		701	ev_set_priority (&childev, EV_MAXPRI);
580	ev_signal_start (&childev);	702	ev_signal_start (EV_A_ &childev);
		703	ev_unref (EV_A); /* child watcher should not keep loop alive */
581	#endif	704	#endif
582	}	705	}
		706	else
		707	default_loop = 0;
583	}	708	}
584		709
585	return ev_method;	710	return default_loop;
586	}	711	}
587		712
588	/*****************************************************************************/
589
590	void	713	void
591	ev_fork_prepare (void)	714	ev_default_destroy (void)
592	{	715	{
593	/* nop */	716	#if EV_MULTIPLICITY
594	}	717	struct ev_loop *loop = default_loop;
595
596	void
597	ev_fork_parent (void)
598	{
599	/* nop */
600	}
601
602	void
603	ev_fork_child (void)
604	{
605	#if EV_USE_EPOLL
606	if (ev_method == EVMETHOD_EPOLL)
607	epoll_postfork_child ();
608	#endif	718	#endif
609		719
		720	ev_ref (EV_A); /* child watcher */
		721	ev_signal_stop (EV_A_ &childev);
		722
		723	ev_ref (EV_A); /* signal watcher */
610	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);
611	close (sigpipe [0]);	738	close (sigpipe [0]);
612	close (sigpipe [1]);	739	close (sigpipe [1]);
613	pipe (sigpipe);	740	pipe (sigpipe);
		741
		742	ev_ref (EV_A); /* signal watcher */
614	siginit ();	743	siginit (EV_A);
615	}	744	}
616		745
617	/*****************************************************************************/	746	/*****************************************************************************/
618		747
619	static void	748	static void
620	call_pending (void)	749	call_pending (EV_P)
621	{	750	{
622	int pri;	751	int pri;
623		752
624	for (pri = NUMPRI; pri--; )	753	for (pri = NUMPRI; pri--; )
625	while (pendingcnt [pri])	754	while (pendingcnt [pri])
…		…
627	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	756	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
628		757
629	if (p->w)	758	if (p->w)
630	{	759	{
631	p->w->pending = 0;	760	p->w->pending = 0;
632	p->w->cb (p->w, p->events);	761	p->w->cb (EV_A_ p->w, p->events);
633	}	762	}
634	}	763	}
635	}	764	}
636		765
637	static void	766	static void
638	timers_reify (void)	767	timers_reify (EV_P)
639	{	768	{
640	while (timercnt && timers [0]->at <= now)	769	while (timercnt && timers [0]->at <= mn_now)
641	{	770	{
642	struct ev_timer *w = timers [0];	771	struct ev_timer *w = timers [0];
643		772
644	/* first reschedule or stop timer */	773	/* first reschedule or stop timer */
645	if (w->repeat)	774	if (w->repeat)
646	{	775	{
647	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.));
648	w->at = now + w->repeat;	777	w->at = mn_now + w->repeat;
649	downheap ((WT *)timers, timercnt, 0);	778	downheap ((WT *)timers, timercnt, 0);
650	}	779	}
651	else	780	else
652	ev_timer_stop (w); /* nonrepeating: stop timer */	781	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
653		782
654	event ((W)w, EV_TIMEOUT);	783	event (EV_A_ (W)w, EV_TIMEOUT);
655	}	784	}
656	}	785	}
657		786
658	static void	787	static void
659	periodics_reify (void)	788	periodics_reify (EV_P)
660	{	789	{
661	while (periodiccnt && periodics [0]->at <= ev_now)	790	while (periodiccnt && periodics [0]->at <= rt_now)
662	{	791	{
663	struct ev_periodic *w = periodics [0];	792	struct ev_periodic *w = periodics [0];
664		793
665	/* first reschedule or stop timer */	794	/* first reschedule or stop timer */
666	if (w->interval)	795	if (w->interval)
667	{	796	{
668	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;
669	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));
670	downheap ((WT *)periodics, periodiccnt, 0);	799	downheap ((WT *)periodics, periodiccnt, 0);
671	}	800	}
672	else	801	else
673	ev_periodic_stop (w); /* nonrepeating: stop timer */	802	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
674		803
675	event ((W)w, EV_PERIODIC);	804	event (EV_A_ (W)w, EV_PERIODIC);
676	}	805	}
677	}	806	}
678		807
679	static void	808	static void
680	periodics_reschedule (ev_tstamp diff)	809	periodics_reschedule (EV_P)
681	{	810	{
682	int i;	811	int i;
683		812
684	/* adjust periodics after time jump */	813	/* adjust periodics after time jump */
685	for (i = 0; i < periodiccnt; ++i)	814	for (i = 0; i < periodiccnt; ++i)
686	{	815	{
687	struct ev_periodic *w = periodics [i];	816	struct ev_periodic *w = periodics [i];
688		817
689	if (w->interval)	818	if (w->interval)
690	{	819	{
691	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;
692		821
693	if (fabs (diff) >= 1e-4)	822	if (fabs (diff) >= 1e-4)
694	{	823	{
695	ev_periodic_stop (w);	824	ev_periodic_stop (EV_A_ w);
696	ev_periodic_start (w);	825	ev_periodic_start (EV_A_ w);
697		826
698	i = 0; /* restart loop, inefficient, but time jumps should be rare */	827	i = 0; /* restart loop, inefficient, but time jumps should be rare */
699	}	828	}
700	}	829	}
701	}	830	}
702	}	831	}
703		832
704	static int	833	inline int
705	time_update_monotonic (void)	834	time_update_monotonic (EV_P)
706	{	835	{
707	now = get_clock ();	836	mn_now = get_clock ();
708		837
709	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	838	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
710	{	839	{
711	ev_now = now + diff;	840	rt_now = rtmn_diff + mn_now;
712	return 0;	841	return 0;
713	}	842	}
714	else	843	else
715	{	844	{
716	now_floor = now;	845	now_floor = mn_now;
717	ev_now = ev_time ();	846	rt_now = ev_time ();
718	return 1;	847	return 1;
719	}	848	}
720	}	849	}
721		850
722	static void	851	static void
723	time_update (void)	852	time_update (EV_P)
724	{	853	{
725	int i;	854	int i;
726		855
727	#if EV_USE_MONOTONIC	856	#if EV_USE_MONOTONIC
728	if (expect_true (have_monotonic))	857	if (expect_true (have_monotonic))
729	{	858	{
730	if (time_update_monotonic ())	859	if (time_update_monotonic (EV_A))
731	{	860	{
732	ev_tstamp odiff = diff;	861	ev_tstamp odiff = rtmn_diff;
733		862
734	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 */
735	{	864	{
736	diff = ev_now - now;	865	rtmn_diff = rt_now - mn_now;
737		866
738	if (fabs (odiff - diff) < MIN_TIMEJUMP)	867	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
739	return; /* all is well */	868	return; /* all is well */
740		869
741	ev_now = ev_time ();	870	rt_now = ev_time ();
742	now = get_clock ();	871	mn_now = get_clock ();
743	now_floor = now;	872	now_floor = mn_now;
744	}	873	}
745		874
746	periodics_reschedule (diff - odiff);	875	periodics_reschedule (EV_A);
747	/* 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) */
748	}	878	}
749	}	879	}
750	else	880	else
751	#endif	881	#endif
752	{	882	{
753	ev_now = ev_time ();	883	rt_now = ev_time ();
754		884
755	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))
756	{	886	{
757	periodics_reschedule (ev_now - now);	887	periodics_reschedule (EV_A);
758		888
759	/* 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 */
760	for (i = 0; i < timercnt; ++i)	890	for (i = 0; i < timercnt; ++i)
761	timers [i]->at += diff;	891	timers [i]->at += rt_now - mn_now;
762	}	892	}
763		893
764	now = ev_now;	894	mn_now = rt_now;
765	}	895	}
766	}	896	}
767		897
768	int ev_loop_done;	898	void
		899	ev_ref (EV_P)
		900	{
		901	++activecnt;
		902	}
769		903
		904	void
		905	ev_unref (EV_P)
		906	{
		907	--activecnt;
		908	}
		909
		910	static int loop_done;
		911
		912	void
770	void ev_loop (int flags)	913	ev_loop (EV_P_ int flags)
771	{	914	{
772	double block;	915	double block;
773	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	916	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
774		917
775	do	918	do
776	{	919	{
777	/* queue check watchers (and execute them) */	920	/* queue check watchers (and execute them) */
778	if (expect_false (preparecnt))	921	if (expect_false (preparecnt))
779	{	922	{
780	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	923	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
781	call_pending ();	924	call_pending (EV_A);
782	}	925	}
783		926
784	/* update fd-related kernel structures */	927	/* update fd-related kernel structures */
785	fd_reify ();	928	fd_reify (EV_A);
786		929
787	/* calculate blocking time */	930	/* calculate blocking time */
788		931
789	/* 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
790	always have timers, we just calculate it always */	933	always have timers, we just calculate it always */
791	#if EV_USE_MONOTONIC	934	#if EV_USE_MONOTONIC
792	if (expect_true (have_monotonic))	935	if (expect_true (have_monotonic))
793	time_update_monotonic ();	936	time_update_monotonic (EV_A);
794	else	937	else
795	#endif	938	#endif
796	{	939	{
797	ev_now = ev_time ();	940	rt_now = ev_time ();
798	now = ev_now;	941	mn_now = rt_now;
799	}	942	}
800		943
801	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	944	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
802	block = 0.;	945	block = 0.;
803	else	946	else
804	{	947	{
805	block = MAX_BLOCKTIME;	948	block = MAX_BLOCKTIME;
806		949
807	if (timercnt)	950	if (timercnt)
808	{	951	{
809	ev_tstamp to = timers [0]->at - now + method_fudge;	952	ev_tstamp to = timers [0]->at - mn_now + method_fudge;
810	if (block > to) block = to;	953	if (block > to) block = to;
811	}	954	}
812		955
813	if (periodiccnt)	956	if (periodiccnt)
814	{	957	{
815	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	958	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
816	if (block > to) block = to;	959	if (block > to) block = to;
817	}	960	}
818		961
819	if (block < 0.) block = 0.;	962	if (block < 0.) block = 0.;
820	}	963	}
821		964
822	method_poll (block);	965	method_poll (EV_A_ block);
823		966
824	/* update ev_now, do magic */	967	/* update rt_now, do magic */
825	time_update ();	968	time_update (EV_A);
826		969
827	/* queue pending timers and reschedule them */	970	/* queue pending timers and reschedule them */
828	timers_reify (); /* relative timers called last */	971	timers_reify (EV_A); /* relative timers called last */
829	periodics_reify (); /* absolute timers called first */	972	periodics_reify (EV_A); /* absolute timers called first */
830		973
831	/* queue idle watchers unless io or timers are pending */	974	/* queue idle watchers unless io or timers are pending */
832	if (!pendingcnt)	975	if (!pendingcnt)
833	queue_events ((W *)idles, idlecnt, EV_IDLE);	976	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
834		977
835	/* queue check watchers, to be executed first */	978	/* queue check watchers, to be executed first */
836	if (checkcnt)	979	if (checkcnt)
837	queue_events ((W *)checks, checkcnt, EV_CHECK);	980	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
838		981
839	call_pending ();	982	call_pending (EV_A);
840	}	983	}
841	while (!ev_loop_done);	984	while (activecnt && !loop_done);
842		985
843	if (ev_loop_done != 2)	986	if (loop_done != 2)
844	ev_loop_done = 0;	987	loop_done = 0;
		988	}
		989
		990	void
		991	ev_unloop (EV_P_ int how)
		992	{
		993	loop_done = how;
845	}	994	}
846		995
847	/*****************************************************************************/	996	/*****************************************************************************/
848		997
849	static void	998	inline void
850	wlist_add (WL *head, WL elem)	999	wlist_add (WL *head, WL elem)
851	{	1000	{
852	elem->next = *head;	1001	elem->next = *head;
853	*head = elem;	1002	*head = elem;
854	}	1003	}
855		1004
856	static void	1005	inline void
857	wlist_del (WL *head, WL elem)	1006	wlist_del (WL *head, WL elem)
858	{	1007	{
859	while (*head)	1008	while (*head)
860	{	1009	{
861	if (*head == elem)	1010	if (*head == elem)
…		…
866		1015
867	head = &(*head)->next;	1016	head = &(*head)->next;
868	}	1017	}
869	}	1018	}
870		1019
871	static void	1020	inline void
872	ev_clear_pending (W w)	1021	ev_clear_pending (EV_P_ W w)
873	{	1022	{
874	if (w->pending)	1023	if (w->pending)
875	{	1024	{
876	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1025	pendings [ABSPRI (w)][w->pending - 1].w = 0;
877	w->pending = 0;	1026	w->pending = 0;
878	}	1027	}
879	}	1028	}
880		1029
881	static void	1030	inline void
882	ev_start (W w, int active)	1031	ev_start (EV_P_ W w, int active)
883	{	1032	{
884	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1033	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
885	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1034	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
886		1035
887	w->active = active;	1036	w->active = active;
		1037	ev_ref (EV_A);
888	}	1038	}
889		1039
890	static void	1040	inline void
891	ev_stop (W w)	1041	ev_stop (EV_P_ W w)
892	{	1042	{
		1043	ev_unref (EV_A);
893	w->active = 0;	1044	w->active = 0;
894	}	1045	}
895		1046
896	/*****************************************************************************/	1047	/*****************************************************************************/
897		1048
898	void	1049	void
899	ev_io_start (struct ev_io *w)	1050	ev_io_start (EV_P_ struct ev_io *w)
900	{	1051	{
901	int fd = w->fd;	1052	int fd = w->fd;
902		1053
903	if (ev_is_active (w))	1054	if (ev_is_active (w))
904	return;	1055	return;
905		1056
906	assert (("ev_io_start called with negative fd", fd >= 0));	1057	assert (("ev_io_start called with negative fd", fd >= 0));
907		1058
908	ev_start ((W)w, 1);	1059	ev_start (EV_A_ (W)w, 1);
909	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1060	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
910	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1061	wlist_add ((WL *)&anfds[fd].head, (WL)w);
911		1062
912	fd_change (fd);	1063	fd_change (EV_A_ fd);
913	}	1064	}
914		1065
915	void	1066	void
916	ev_io_stop (struct ev_io *w)	1067	ev_io_stop (EV_P_ struct ev_io *w)
917	{	1068	{
918	ev_clear_pending ((W)w);	1069	ev_clear_pending (EV_A_ (W)w);
919	if (!ev_is_active (w))	1070	if (!ev_is_active (w))
920	return;	1071	return;
921		1072
922	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1073	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
923	ev_stop ((W)w);	1074	ev_stop (EV_A_ (W)w);
924		1075
925	fd_change (w->fd);	1076	fd_change (EV_A_ w->fd);
926	}	1077	}
927		1078
928	void	1079	void
929	ev_timer_start (struct ev_timer *w)	1080	ev_timer_start (EV_P_ struct ev_timer *w)
930	{	1081	{
931	if (ev_is_active (w))	1082	if (ev_is_active (w))
932	return;	1083	return;
933		1084
934	w->at += now;	1085	w->at += mn_now;
935		1086
936	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.));
937		1088
938	ev_start ((W)w, ++timercnt);	1089	ev_start (EV_A_ (W)w, ++timercnt);
939	array_needsize (timers, timermax, timercnt, );	1090	array_needsize (timers, timermax, timercnt, );
940	timers [timercnt - 1] = w;	1091	timers [timercnt - 1] = w;
941	upheap ((WT *)timers, timercnt - 1);	1092	upheap ((WT *)timers, timercnt - 1);
942	}	1093	}
943		1094
944	void	1095	void
945	ev_timer_stop (struct ev_timer *w)	1096	ev_timer_stop (EV_P_ struct ev_timer *w)
946	{	1097	{
947	ev_clear_pending ((W)w);	1098	ev_clear_pending (EV_A_ (W)w);
948	if (!ev_is_active (w))	1099	if (!ev_is_active (w))
949	return;	1100	return;
950		1101
951	if (w->active < timercnt--)	1102	if (w->active < timercnt--)
952	{	1103	{
…		…
954	downheap ((WT *)timers, timercnt, w->active - 1);	1105	downheap ((WT *)timers, timercnt, w->active - 1);
955	}	1106	}
956		1107
957	w->at = w->repeat;	1108	w->at = w->repeat;
958		1109
959	ev_stop ((W)w);	1110	ev_stop (EV_A_ (W)w);
960	}	1111	}
961		1112
962	void	1113	void
963	ev_timer_again (struct ev_timer *w)	1114	ev_timer_again (EV_P_ struct ev_timer *w)
964	{	1115	{
965	if (ev_is_active (w))	1116	if (ev_is_active (w))
966	{	1117	{
967	if (w->repeat)	1118	if (w->repeat)
968	{	1119	{
969	w->at = now + w->repeat;	1120	w->at = mn_now + w->repeat;
970	downheap ((WT *)timers, timercnt, w->active - 1);	1121	downheap ((WT *)timers, timercnt, w->active - 1);
971	}	1122	}
972	else	1123	else
973	ev_timer_stop (w);	1124	ev_timer_stop (EV_A_ w);
974	}	1125	}
975	else if (w->repeat)	1126	else if (w->repeat)
976	ev_timer_start (w);	1127	ev_timer_start (EV_A_ w);
977	}	1128	}
978		1129
979	void	1130	void
980	ev_periodic_start (struct ev_periodic *w)	1131	ev_periodic_start (EV_P_ struct ev_periodic *w)
981	{	1132	{
982	if (ev_is_active (w))	1133	if (ev_is_active (w))
983	return;	1134	return;
984		1135
985	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.));
986		1137
987	/* 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 */
988	if (w->interval)	1139	if (w->interval)
989	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1140	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
990		1141
991	ev_start ((W)w, ++periodiccnt);	1142	ev_start (EV_A_ (W)w, ++periodiccnt);
992	array_needsize (periodics, periodicmax, periodiccnt, );	1143	array_needsize (periodics, periodicmax, periodiccnt, );
993	periodics [periodiccnt - 1] = w;	1144	periodics [periodiccnt - 1] = w;
994	upheap ((WT *)periodics, periodiccnt - 1);	1145	upheap ((WT *)periodics, periodiccnt - 1);
995	}	1146	}
996		1147
997	void	1148	void
998	ev_periodic_stop (struct ev_periodic *w)	1149	ev_periodic_stop (EV_P_ struct ev_periodic *w)
999	{	1150	{
1000	ev_clear_pending ((W)w);	1151	ev_clear_pending (EV_A_ (W)w);
1001	if (!ev_is_active (w))	1152	if (!ev_is_active (w))
1002	return;	1153	return;
1003		1154
1004	if (w->active < periodiccnt--)	1155	if (w->active < periodiccnt--)
1005	{	1156	{
1006	periodics [w->active - 1] = periodics [periodiccnt];	1157	periodics [w->active - 1] = periodics [periodiccnt];
1007	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1158	downheap ((WT *)periodics, periodiccnt, w->active - 1);
1008	}	1159	}
1009		1160
1010	ev_stop ((W)w);	1161	ev_stop (EV_A_ (W)w);
1011	}	1162	}
1012		1163
1013	void	1164	void
1014	ev_signal_start (struct ev_signal *w)	1165	ev_idle_start (EV_P_ struct ev_idle *w)
1015	{	1166	{
1016	if (ev_is_active (w))	1167	if (ev_is_active (w))
1017	return;	1168	return;
1018		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
1019	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));
1020		1244
1021	ev_start ((W)w, 1);	1245	ev_start (EV_A_ (W)w, 1);
1022	array_needsize (signals, signalmax, w->signum, signals_init);	1246	array_needsize (signals, signalmax, w->signum, signals_init);
1023	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1247	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1024		1248
1025	if (!w->next)	1249	if (!w->next)
1026	{	1250	{
1027	struct sigaction sa;	1251	struct sigaction sa;
1028	sa.sa_handler = sighandler;	1252	sa.sa_handler = sighandler;
1029	sigfillset (&sa.sa_mask);	1253	sigfillset (&sa.sa_mask);
1030	sa.sa_flags = 0;	1254	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1031	sigaction (w->signum, &sa, 0);	1255	sigaction (w->signum, &sa, 0);
1032	}	1256	}
1033	}	1257	}
1034		1258
1035	void	1259	void
1036	ev_signal_stop (struct ev_signal *w)	1260	ev_signal_stop (EV_P_ struct ev_signal *w)
1037	{	1261	{
1038	ev_clear_pending ((W)w);	1262	ev_clear_pending (EV_A_ (W)w);
1039	if (!ev_is_active (w))	1263	if (!ev_is_active (w))
1040	return;	1264	return;
1041		1265
1042	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1266	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1043	ev_stop ((W)w);	1267	ev_stop (EV_A_ (W)w);
1044		1268
1045	if (!signals [w->signum - 1].head)	1269	if (!signals [w->signum - 1].head)
1046	signal (w->signum, SIG_DFL);	1270	signal (w->signum, SIG_DFL);
1047	}	1271	}
1048		1272
1049	void	1273	void
1050	ev_idle_start (struct ev_idle *w)	1274	ev_child_start (EV_P_ struct ev_child *w)
1051	{	1275	{
		1276	#if EV_MULTIPLICITY
		1277	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1278	#endif
1052	if (ev_is_active (w))	1279	if (ev_is_active (w))
1053	return;	1280	return;
1054		1281
1055	ev_start ((W)w, ++idlecnt);	1282	ev_start (EV_A_ (W)w, 1);
1056	array_needsize (idles, idlemax, idlecnt, );	1283	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1057	idles [idlecnt - 1] = w;
1058	}	1284	}
1059		1285
1060	void	1286	void
1061	ev_idle_stop (struct ev_idle *w)	1287	ev_child_stop (EV_P_ struct ev_child *w)
1062	{	1288	{
1063	ev_clear_pending ((W)w);	1289	ev_clear_pending (EV_A_ (W)w);
1064	if (ev_is_active (w))	1290	if (ev_is_active (w))
1065	return;	1291	return;
1066		1292
1067	idles [w->active - 1] = idles [--idlecnt];
1068	ev_stop ((W)w);
1069	}
1070
1071	void
1072	ev_prepare_start (struct ev_prepare *w)
1073	{
1074	if (ev_is_active (w))
1075	return;
1076
1077	ev_start ((W)w, ++preparecnt);
1078	array_needsize (prepares, preparemax, preparecnt, );
1079	prepares [preparecnt - 1] = w;
1080	}
1081
1082	void
1083	ev_prepare_stop (struct ev_prepare *w)
1084	{
1085	ev_clear_pending ((W)w);
1086	if (ev_is_active (w))
1087	return;
1088
1089	prepares [w->active - 1] = prepares [--preparecnt];
1090	ev_stop ((W)w);
1091	}
1092
1093	void
1094	ev_check_start (struct ev_check *w)
1095	{
1096	if (ev_is_active (w))
1097	return;
1098
1099	ev_start ((W)w, ++checkcnt);
1100	array_needsize (checks, checkmax, checkcnt, );
1101	checks [checkcnt - 1] = w;
1102	}
1103
1104	void
1105	ev_check_stop (struct ev_check *w)
1106	{
1107	ev_clear_pending ((W)w);
1108	if (ev_is_active (w))
1109	return;
1110
1111	checks [w->active - 1] = checks [--checkcnt];
1112	ev_stop ((W)w);
1113	}
1114
1115	void
1116	ev_child_start (struct ev_child *w)
1117	{
1118	if (ev_is_active (w))
1119	return;
1120
1121	ev_start ((W)w, 1);
1122	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1123	}
1124
1125	void
1126	ev_child_stop (struct ev_child *w)
1127	{
1128	ev_clear_pending ((W)w);
1129	if (ev_is_active (w))
1130	return;
1131
1132	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1293	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1133	ev_stop ((W)w);	1294	ev_stop (EV_A_ (W)w);
1134	}	1295	}
1135		1296
1136	/*****************************************************************************/	1297	/*****************************************************************************/
1137		1298
1138	struct ev_once	1299	struct ev_once
…		…
1142	void (cb)(int revents, void arg);	1303	void (cb)(int revents, void arg);
1143	void *arg;	1304	void *arg;
1144	};	1305	};
1145		1306
1146	static void	1307	static void
1147	once_cb (struct ev_once *once, int revents)	1308	once_cb (EV_P_ struct ev_once *once, int revents)
1148	{	1309	{
1149	void (cb)(int revents, void arg) = once->cb;	1310	void (cb)(int revents, void arg) = once->cb;
1150	void *arg = once->arg;	1311	void *arg = once->arg;
1151		1312
1152	ev_io_stop (&once->io);	1313	ev_io_stop (EV_A_ &once->io);
1153	ev_timer_stop (&once->to);	1314	ev_timer_stop (EV_A_ &once->to);
1154	free (once);	1315	free (once);
1155		1316
1156	cb (revents, arg);	1317	cb (revents, arg);
1157	}	1318	}
1158		1319
1159	static void	1320	static void
1160	once_cb_io (struct ev_io *w, int revents)	1321	once_cb_io (EV_P_ struct ev_io *w, int revents)
1161	{	1322	{
1162	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);
1163	}	1324	}
1164		1325
1165	static void	1326	static void
1166	once_cb_to (struct ev_timer *w, int revents)	1327	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1167	{	1328	{
1168	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);
1169	}	1330	}
1170		1331
1171	void	1332	void
1172	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)
1173	{	1334	{
1174	struct ev_once *once = malloc (sizeof (struct ev_once));	1335	struct ev_once *once = malloc (sizeof (struct ev_once));
1175		1336
1176	if (!once)	1337	if (!once)
1177	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1338	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
…		…
1182		1343
1183	ev_watcher_init (&once->io, once_cb_io);	1344	ev_watcher_init (&once->io, once_cb_io);
1184	if (fd >= 0)	1345	if (fd >= 0)
1185	{	1346	{
1186	ev_io_set (&once->io, fd, events);	1347	ev_io_set (&once->io, fd, events);
1187	ev_io_start (&once->io);	1348	ev_io_start (EV_A_ &once->io);
1188	}	1349	}
1189		1350
1190	ev_watcher_init (&once->to, once_cb_to);	1351	ev_watcher_init (&once->to, once_cb_to);
1191	if (timeout >= 0.)	1352	if (timeout >= 0.)
1192	{	1353	{
1193	ev_timer_set (&once->to, timeout, 0.);	1354	ev_timer_set (&once->to, timeout, 0.);
1194	ev_timer_start (&once->to);	1355	ev_timer_start (EV_A_ &once->to);
1195	}	1356	}
1196	}	1357	}
1197	}	1358	}
1198		1359
1199	/*****************************************************************************/
1200
1201	#if 0
1202
1203	struct ev_io wio;
1204
1205	static void
1206	sin_cb (struct ev_io *w, int revents)
1207	{
1208	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1209	}
1210
1211	static void
1212	ocb (struct ev_timer *w, int revents)
1213	{
1214	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1215	ev_timer_stop (w);
1216	ev_timer_start (w);
1217	}
1218
1219	static void
1220	scb (struct ev_signal *w, int revents)
1221	{
1222	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1223	ev_io_stop (&wio);
1224	ev_io_start (&wio);
1225	}
1226
1227	static void
1228	gcb (struct ev_signal *w, int revents)
1229	{
1230	fprintf (stderr, "generic %x\n", revents);
1231
1232	}
1233
1234	int main (void)
1235	{
1236	ev_init (0);
1237
1238	ev_io_init (&wio, sin_cb, 0, EV_READ);
1239	ev_io_start (&wio);
1240
1241	struct ev_timer t[10000];
1242
1243	#if 0
1244	int i;
1245	for (i = 0; i < 10000; ++i)
1246	{
1247	struct ev_timer *w = t + i;
1248	ev_watcher_init (w, ocb, i);
1249	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1250	ev_timer_start (w);
1251	if (drand48 () < 0.5)
1252	ev_timer_stop (w);
1253	}
1254	#endif
1255
1256	struct ev_timer t1;
1257	ev_timer_init (&t1, ocb, 5, 10);
1258	ev_timer_start (&t1);
1259
1260	struct ev_signal sig;
1261	ev_signal_init (&sig, scb, SIGQUIT);
1262	ev_signal_start (&sig);
1263
1264	struct ev_check cw;
1265	ev_check_init (&cw, gcb);
1266	ev_check_start (&cw);
1267
1268	struct ev_idle iw;
1269	ev_idle_init (&iw, gcb);
1270	ev_idle_start (&iw);
1271
1272	ev_loop (0);
1273
1274	return 0;
1275	}
1276
1277	#endif
1278
1279
1280
1281

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Comparing libev/ev.c (file contents): Revision 1.46 by root, Sat Nov 3 09:20:12 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 1.46 by root, Sat Nov 3 09:20:12 2007 UTC vs.
Revision 1.59 by root, Sun Nov 4 18:15:16 2007 UTC