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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 1.67 by root, Mon Nov 5 16:42:15 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
		34	# if HAVE_CLOCK_GETTIME
		35	# define EV_USE_MONOTONIC 1
		36	# define EV_USE_REALTIME 1
		37	# endif
		38
		39	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		40	# define EV_USE_SELECT 1
		41	# endif
		42
		43	# if HAVE_POLL && HAVE_POLL_H
		44	# define EV_USE_POLL 1
		45	# endif
		46
		47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		48	# define EV_USE_EPOLL 1
		49	# endif
		50
		51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		52	# define EV_USE_KQUEUE 1
		53	# endif
		54
33	#endif	55	#endif
34		56
35	#include <math.h>	57	#include <math.h>
36	#include <stdlib.h>	58	#include <stdlib.h>
37	#include <unistd.h>	59	#include <unistd.h>
…		…
70		92
71	#ifndef EV_USE_KQUEUE	93	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	94	# define EV_USE_KQUEUE 0
73	#endif	95	#endif
74		96
		97	#ifndef EV_USE_WIN32
		98	# ifdef WIN32
		99	# define EV_USE_WIN32 1
		100	# else
		101	# define EV_USE_WIN32 0
		102	# endif
		103	#endif
		104
75	#ifndef EV_USE_REALTIME	105	#ifndef EV_USE_REALTIME
76	# define EV_USE_REALTIME 1	106	# define EV_USE_REALTIME 1
77	#endif	107	#endif
78		108
79	/**/	109	/**/
…		…
113		143
114	typedef struct ev_watcher *W;	144	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	145	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	146	typedef struct ev_watcher_time *WT;
117		147
118	static ev_tstamp now_floor, now, diff; /* monotonic clock */	148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119	ev_tstamp ev_now;
120	int ev_method;
121		149
122	static int have_monotonic; /* runtime */	150	#if WIN32
123		151	/* note: the comment below could not be substantiated, but what would I care */
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	152	/* MSDN says this is required to handle SIGFPE */
125	static void (*method_modify)(int fd, int oev, int nev);	153	volatile double SIGFPE_REQ = 0.0f;
126	static void (*method_poll)(ev_tstamp timeout);	154	#endif
127		155
128	/*****************************************************************************/	156	/*****************************************************************************/
129		157
130	ev_tstamp	158	typedef struct
		159	{
		160	struct ev_watcher_list *head;
		161	unsigned char events;
		162	unsigned char reify;
		163	} ANFD;
		164
		165	typedef struct
		166	{
		167	W w;
		168	int events;
		169	} ANPENDING;
		170
		171	#if EV_MULTIPLICITY
		172
		173	struct ev_loop
		174	{
		175	# define VAR(name,decl) decl;
		176	# include "ev_vars.h"
		177	};
		178	# undef VAR
		179	# include "ev_wrap.h"
		180
		181	#else
		182
		183	# define VAR(name,decl) static decl;
		184	# include "ev_vars.h"
		185	# undef VAR
		186
		187	#endif
		188
		189	/*****************************************************************************/
		190
		191	inline ev_tstamp
131	ev_time (void)	192	ev_time (void)
132	{	193	{
133	#if EV_USE_REALTIME	194	#if EV_USE_REALTIME
134	struct timespec ts;	195	struct timespec ts;
135	clock_gettime (CLOCK_REALTIME, &ts);	196	clock_gettime (CLOCK_REALTIME, &ts);
…		…
139	gettimeofday (&tv, 0);	200	gettimeofday (&tv, 0);
140	return tv.tv_sec + tv.tv_usec * 1e-6;	201	return tv.tv_sec + tv.tv_usec * 1e-6;
141	#endif	202	#endif
142	}	203	}
143		204
144	static ev_tstamp	205	inline ev_tstamp
145	get_clock (void)	206	get_clock (void)
146	{	207	{
147	#if EV_USE_MONOTONIC	208	#if EV_USE_MONOTONIC
148	if (expect_true (have_monotonic))	209	if (expect_true (have_monotonic))
149	{	210	{
…		…
152	return ts.tv_sec + ts.tv_nsec * 1e-9;	213	return ts.tv_sec + ts.tv_nsec * 1e-9;
153	}	214	}
154	#endif	215	#endif
155		216
156	return ev_time ();	217	return ev_time ();
		218	}
		219
		220	ev_tstamp
		221	ev_now (EV_P)
		222	{
		223	return rt_now;
157	}	224	}
158		225
159	#define array_roundsize(base,n) ((n) | 4 & ~3)	226	#define array_roundsize(base,n) ((n) | 4 & ~3)
160		227
161	#define array_needsize(base,cur,cnt,init) \	228	#define array_needsize(base,cur,cnt,init) \
…		…
171	base = realloc (base, sizeof (*base) * (newcnt)); \	238	base = realloc (base, sizeof (*base) * (newcnt)); \
172	init (base + cur, newcnt - cur); \	239	init (base + cur, newcnt - cur); \
173	cur = newcnt; \	240	cur = newcnt; \
174	}	241	}
175		242
		243	#define array_slim(stem) \
		244	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		245	{ \
		246	stem ## max = array_roundsize (stem ## cnt >> 1); \
		247	base = realloc (base, sizeof (*base) * (stem ## max)); \
		248	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		249	}
		250
		251	#define array_free(stem, idx) \
		252	free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
		253
176	/*****************************************************************************/	254	/*****************************************************************************/
177
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		255
188	static void	256	static void
189	anfds_init (ANFD *base, int count)	257	anfds_init (ANFD *base, int count)
190	{	258	{
191	while (count--)	259	while (count--)
…		…
196		264
197	++base;	265	++base;
198	}	266	}
199	}	267	}
200		268
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	269	static void
211	event (W w, int events)	270	event (EV_P_ W w, int events)
212	{	271	{
213	if (w->pending)	272	if (w->pending)
214	{	273	{
215	pendings [ABSPRI (w)][w->pending - 1].events |= events;	274	pendings [ABSPRI (w)][w->pending - 1].events |= events;
216	return;	275	return;
…		…
221	pendings [ABSPRI (w)][w->pending - 1].w = w;	280	pendings [ABSPRI (w)][w->pending - 1].w = w;
222	pendings [ABSPRI (w)][w->pending - 1].events = events;	281	pendings [ABSPRI (w)][w->pending - 1].events = events;
223	}	282	}
224		283
225	static void	284	static void
226	queue_events (W *events, int eventcnt, int type)	285	queue_events (EV_P_ W *events, int eventcnt, int type)
227	{	286	{
228	int i;	287	int i;
229		288
230	for (i = 0; i < eventcnt; ++i)	289	for (i = 0; i < eventcnt; ++i)
231	event (events [i], type);	290	event (EV_A_ events [i], type);
232	}	291	}
233		292
234	static void	293	static void
235	fd_event (int fd, int events)	294	fd_event (EV_P_ int fd, int events)
236	{	295	{
237	ANFD *anfd = anfds + fd;	296	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	297	struct ev_io *w;
239		298
240	for (w = anfd->head; w; w = w->next)	299	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
241	{	300	{
242	int ev = w->events & events;	301	int ev = w->events & events;
243		302
244	if (ev)	303	if (ev)
245	event ((W)w, ev);	304	event (EV_A_ (W)w, ev);
246	}	305	}
247	}	306	}
248		307
249	/*****************************************************************************/	308	/*****************************************************************************/
250		309
251	static int *fdchanges;
252	static int fdchangemax, fdchangecnt;
253
254	static void	310	static void
255	fd_reify (void)	311	fd_reify (EV_P)
256	{	312	{
257	int i;	313	int i;
258		314
259	for (i = 0; i < fdchangecnt; ++i)	315	for (i = 0; i < fdchangecnt; ++i)
260	{	316	{
…		…
262	ANFD *anfd = anfds + fd;	318	ANFD *anfd = anfds + fd;
263	struct ev_io *w;	319	struct ev_io *w;
264		320
265	int events = 0;	321	int events = 0;
266		322
267	for (w = anfd->head; w; w = w->next)	323	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
268	events |= w->events;	324	events |= w->events;
269		325
270	anfd->reify = 0;	326	anfd->reify = 0;
271		327
272	if (anfd->events != events)
273	{
274	method_modify (fd, anfd->events, events);	328	method_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	329	anfd->events = events;
276	}
277	}	330	}
278		331
279	fdchangecnt = 0;	332	fdchangecnt = 0;
280	}	333	}
281		334
282	static void	335	static void
283	fd_change (int fd)	336	fd_change (EV_P_ int fd)
284	{	337	{
285	if (anfds [fd].reify || fdchangecnt < 0)	338	if (anfds [fd].reify || fdchangecnt < 0)
286	return;	339	return;
287		340
288	anfds [fd].reify = 1;	341	anfds [fd].reify = 1;
…		…
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	344	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
292	fdchanges [fdchangecnt - 1] = fd;	345	fdchanges [fdchangecnt - 1] = fd;
293	}	346	}
294		347
295	static void	348	static void
296	fd_kill (int fd)	349	fd_kill (EV_P_ int fd)
297	{	350	{
298	struct ev_io *w;	351	struct ev_io *w;
299		352
300	printf ("killing fd %d\n", fd);//D
301	while ((w = anfds [fd].head))	353	while ((w = (struct ev_io *)anfds [fd].head))
302	{	354	{
303	ev_io_stop (w);	355	ev_io_stop (EV_A_ w);
304	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	356	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
305	}	357	}
306	}	358	}
307		359
308	/* called on EBADF to verify fds */	360	/* called on EBADF to verify fds */
309	static void	361	static void
310	fd_ebadf (void)	362	fd_ebadf (EV_P)
311	{	363	{
312	int fd;	364	int fd;
313		365
314	for (fd = 0; fd < anfdmax; ++fd)	366	for (fd = 0; fd < anfdmax; ++fd)
315	if (anfds [fd].events)	367	if (anfds [fd].events)
316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	368	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
317	fd_kill (fd);	369	fd_kill (EV_A_ fd);
318	}	370	}
319		371
320	/* called on ENOMEM in select/poll to kill some fds and retry */	372	/* called on ENOMEM in select/poll to kill some fds and retry */
321	static void	373	static void
322	fd_enomem (void)	374	fd_enomem (EV_P)
323	{	375	{
324	int fd = anfdmax;	376	int fd;
325		377
326	while (fd--)	378	for (fd = anfdmax; fd--; )
327	if (anfds [fd].events)	379	if (anfds [fd].events)
328	{	380	{
329	close (fd);	381	close (fd);
330	fd_kill (fd);	382	fd_kill (EV_A_ fd);
331	return;	383	return;
332	}	384	}
333	}	385	}
334		386
		387	/* susually called after fork if method needs to re-arm all fds from scratch */
		388	static void
		389	fd_rearm_all (EV_P)
		390	{
		391	int fd;
		392
		393	/* this should be highly optimised to not do anything but set a flag */
		394	for (fd = 0; fd < anfdmax; ++fd)
		395	if (anfds [fd].events)
		396	{
		397	anfds [fd].events = 0;
		398	fd_change (EV_A_ fd);
		399	}
		400	}
		401
335	/*****************************************************************************/	402	/*****************************************************************************/
336		403
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	404	static void
344	upheap (WT *timers, int k)	405	upheap (WT *heap, int k)
345	{	406	{
346	WT w = timers [k];	407	WT w = heap [k];
347		408
348	while (k && timers [k >> 1]->at > w->at)	409	while (k && heap [k >> 1]->at > w->at)
349	{	410	{
350	timers [k] = timers [k >> 1];	411	heap [k] = heap [k >> 1];
351	timers [k]->active = k + 1;	412	((W)heap [k])->active = k + 1;
352	k >>= 1;	413	k >>= 1;
353	}	414	}
354		415
355	timers [k] = w;	416	heap [k] = w;
356	timers [k]->active = k + 1;	417	((W)heap [k])->active = k + 1;
357		418
358	}	419	}
359		420
360	static void	421	static void
361	downheap (WT *timers, int N, int k)	422	downheap (WT *heap, int N, int k)
362	{	423	{
363	WT w = timers [k];	424	WT w = heap [k];
364		425
365	while (k < (N >> 1))	426	while (k < (N >> 1))
366	{	427	{
367	int j = k << 1;	428	int j = k << 1;
368		429
369	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	430	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
370	++j;	431	++j;
371		432
372	if (w->at <= timers [j]->at)	433	if (w->at <= heap [j]->at)
373	break;	434	break;
374		435
375	timers [k] = timers [j];	436	heap [k] = heap [j];
376	timers [k]->active = k + 1;	437	((W)heap [k])->active = k + 1;
377	k = j;	438	k = j;
378	}	439	}
379		440
380	timers [k] = w;	441	heap [k] = w;
381	timers [k]->active = k + 1;	442	((W)heap [k])->active = k + 1;
382	}	443	}
383		444
384	/*****************************************************************************/	445	/*****************************************************************************/
385		446
386	typedef struct	447	typedef struct
387	{	448	{
388	struct ev_signal *head;	449	struct ev_watcher_list *head;
389	sig_atomic_t volatile gotsig;	450	sig_atomic_t volatile gotsig;
390	} ANSIG;	451	} ANSIG;
391		452
392	static ANSIG *signals;	453	static ANSIG *signals;
393	static int signalmax;	454	static int signalmax;
…		…
409	}	470	}
410		471
411	static void	472	static void
412	sighandler (int signum)	473	sighandler (int signum)
413	{	474	{
		475	#if WIN32
		476	signal (signum, sighandler);
		477	#endif
		478
414	signals [signum - 1].gotsig = 1;	479	signals [signum - 1].gotsig = 1;
415		480
416	if (!gotsig)	481	if (!gotsig)
417	{	482	{
		483	int old_errno = errno;
418	gotsig = 1;	484	gotsig = 1;
419	write (sigpipe [1], &signum, 1);	485	write (sigpipe [1], &signum, 1);
		486	errno = old_errno;
420	}	487	}
421	}	488	}
422		489
423	static void	490	static void
424	sigcb (struct ev_io *iow, int revents)	491	sigcb (EV_P_ struct ev_io *iow, int revents)
425	{	492	{
426	struct ev_signal *w;	493	struct ev_watcher_list *w;
427	int signum;	494	int signum;
428		495
429	read (sigpipe [0], &revents, 1);	496	read (sigpipe [0], &revents, 1);
430	gotsig = 0;	497	gotsig = 0;
431		498
…		…
433	if (signals [signum].gotsig)	500	if (signals [signum].gotsig)
434	{	501	{
435	signals [signum].gotsig = 0;	502	signals [signum].gotsig = 0;
436		503
437	for (w = signals [signum].head; w; w = w->next)	504	for (w = signals [signum].head; w; w = w->next)
438	event ((W)w, EV_SIGNAL);	505	event (EV_A_ (W)w, EV_SIGNAL);
439	}	506	}
440	}	507	}
441		508
442	static void	509	static void
443	siginit (void)	510	siginit (EV_P)
444	{	511	{
445	#ifndef WIN32	512	#ifndef WIN32
446	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	513	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
447	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	514	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
448		515
…		…
450	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	517	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
451	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	518	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
452	#endif	519	#endif
453		520
454	ev_io_set (&sigev, sigpipe [0], EV_READ);	521	ev_io_set (&sigev, sigpipe [0], EV_READ);
455	ev_io_start (&sigev);	522	ev_io_start (EV_A_ &sigev);
		523	ev_unref (EV_A); /* child watcher should not keep loop alive */
456	}	524	}
457		525
458	/*****************************************************************************/	526	/*****************************************************************************/
459		527
460	static struct ev_idle **idles;	528	#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		529
471	static struct ev_child *childs [PID_HASHSIZE];	530	static struct ev_child *childs [PID_HASHSIZE];
472	static struct ev_signal childev;	531	static struct ev_signal childev;
473		532
474	#ifndef WIN32
475
476	#ifndef WCONTINUED	533	#ifndef WCONTINUED
477	# define WCONTINUED 0	534	# define WCONTINUED 0
478	#endif	535	#endif
479		536
480	static void	537	static void
481	childcb (struct ev_signal *sw, int revents)	538	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
482	{	539	{
483	struct ev_child *w;	540	struct ev_child *w;
		541
		542	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		543	if (w->pid == pid || !w->pid)
		544	{
		545	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		546	w->rpid = pid;
		547	w->rstatus = status;
		548	event (EV_A_ (W)w, EV_CHILD);
		549	}
		550	}
		551
		552	static void
		553	childcb (EV_P_ struct ev_signal *sw, int revents)
		554	{
484	int pid, status;	555	int pid, status;
485		556
486	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	557	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
487	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	558	{
488	if (w->pid == pid || !w->pid)	559	/* make sure we are called again until all childs have been reaped */
489	{	560	event (EV_A_ (W)sw, EV_SIGNAL);
490	w->status = status;	561
491	event ((W)w, EV_CHILD);	562	child_reap (EV_A_ sw, pid, pid, status);
492	}	563	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		564	}
493	}	565	}
494		566
495	#endif	567	#endif
496		568
497	/*****************************************************************************/	569	/*****************************************************************************/
…		…
519	ev_version_minor (void)	591	ev_version_minor (void)
520	{	592	{
521	return EV_VERSION_MINOR;	593	return EV_VERSION_MINOR;
522	}	594	}
523		595
524	/* return true if we are running with elevated privileges and ignore env variables */	596	/* return true if we are running with elevated privileges and should ignore env variables */
525	static int	597	static int
526	enable_secure ()	598	enable_secure (void)
527	{	599	{
		600	#ifdef WIN32
		601	return 0;
		602	#else
528	return getuid () != geteuid ()	603	return getuid () != geteuid ()
529	|| getgid () != getegid ();	604	|| getgid () != getegid ();
		605	#endif
530	}	606	}
531		607
532	int ev_init (int methods)	608	int
		609	ev_method (EV_P)
533	{	610	{
		611	return method;
		612	}
		613
		614	static void
		615	loop_init (EV_P_ int methods)
		616	{
534	if (!ev_method)	617	if (!method)
535	{	618	{
536	#if EV_USE_MONOTONIC	619	#if EV_USE_MONOTONIC
537	{	620	{
538	struct timespec ts;	621	struct timespec ts;
539	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	622	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
540	have_monotonic = 1;	623	have_monotonic = 1;
541	}	624	}
542	#endif	625	#endif
543		626
544	ev_now = ev_time ();	627	rt_now = ev_time ();
545	now = get_clock ();	628	mn_now = get_clock ();
546	now_floor = now;	629	now_floor = mn_now;
547	diff = ev_now - now;	630	rtmn_diff = rt_now - mn_now;
548
549	if (pipe (sigpipe))
550	return 0;
551		631
552	if (methods == EVMETHOD_AUTO)	632	if (methods == EVMETHOD_AUTO)
553	if (!enable_secure () && getenv ("LIBEV_METHODS"))	633	if (!enable_secure () && getenv ("LIBEV_METHODS"))
554	methods = atoi (getenv ("LIBEV_METHODS"));	634	methods = atoi (getenv ("LIBEV_METHODS"));
555	else	635	else
556	methods = EVMETHOD_ANY;	636	methods = EVMETHOD_ANY;
557		637
558	ev_method = 0;	638	method = 0;
		639	#if EV_USE_WIN32
		640	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		641	#endif
559	#if EV_USE_KQUEUE	642	#if EV_USE_KQUEUE
560	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	643	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
561	#endif	644	#endif
562	#if EV_USE_EPOLL	645	#if EV_USE_EPOLL
563	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	646	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
564	#endif	647	#endif
565	#if EV_USE_POLL	648	#if EV_USE_POLL
566	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	649	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
567	#endif	650	#endif
568	#if EV_USE_SELECT	651	#if EV_USE_SELECT
569	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	652	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
570	#endif	653	#endif
		654	}
		655	}
571		656
		657	void
		658	loop_destroy (EV_P)
		659	{
		660	int i;
		661
		662	#if EV_USE_WIN32
		663	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		664	#endif
		665	#if EV_USE_KQUEUE
		666	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		667	#endif
		668	#if EV_USE_EPOLL
		669	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		670	#endif
		671	#if EV_USE_POLL
		672	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		673	#endif
		674	#if EV_USE_SELECT
		675	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		676	#endif
		677
		678	for (i = NUMPRI; i--; )
		679	array_free (pending, [i]);
		680
		681	array_free (fdchange, );
		682	array_free (timer, );
		683	array_free (periodic, );
		684	array_free (idle, );
		685	array_free (prepare, );
		686	array_free (check, );
		687
		688	method = 0;
		689	/*TODO*/
		690	}
		691
		692	void
		693	loop_fork (EV_P)
		694	{
		695	/*TODO*/
		696	#if EV_USE_EPOLL
		697	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		698	#endif
		699	#if EV_USE_KQUEUE
		700	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		701	#endif
		702	}
		703
		704	#if EV_MULTIPLICITY
		705	struct ev_loop *
		706	ev_loop_new (int methods)
		707	{
		708	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));
		709
		710	loop_init (EV_A_ methods);
		711
		712	if (ev_method (EV_A))
		713	return loop;
		714
		715	return 0;
		716	}
		717
		718	void
		719	ev_loop_destroy (EV_P)
		720	{
		721	loop_destroy (EV_A);
		722	free (loop);
		723	}
		724
		725	void
		726	ev_loop_fork (EV_P)
		727	{
		728	loop_fork (EV_A);
		729	}
		730
		731	#endif
		732
		733	#if EV_MULTIPLICITY
		734	struct ev_loop default_loop_struct;
		735	static struct ev_loop *default_loop;
		736
		737	struct ev_loop *
		738	#else
		739	static int default_loop;
		740
		741	int
		742	#endif
		743	ev_default_loop (int methods)
		744	{
		745	if (sigpipe [0] == sigpipe [1])
		746	if (pipe (sigpipe))
		747	return 0;
		748
		749	if (!default_loop)
		750	{
		751	#if EV_MULTIPLICITY
		752	struct ev_loop *loop = default_loop = &default_loop_struct;
		753	#else
		754	default_loop = 1;
		755	#endif
		756
		757	loop_init (EV_A_ methods);
		758
572	if (ev_method)	759	if (ev_method (EV_A))
573	{	760	{
574	ev_watcher_init (&sigev, sigcb);	761	ev_watcher_init (&sigev, sigcb);
		762	ev_set_priority (&sigev, EV_MAXPRI);
575	siginit ();	763	siginit (EV_A);
576		764
577	#ifndef WIN32	765	#ifndef WIN32
578	ev_signal_init (&childev, childcb, SIGCHLD);	766	ev_signal_init (&childev, childcb, SIGCHLD);
		767	ev_set_priority (&childev, EV_MAXPRI);
579	ev_signal_start (&childev);	768	ev_signal_start (EV_A_ &childev);
		769	ev_unref (EV_A); /* child watcher should not keep loop alive */
580	#endif	770	#endif
581	}	771	}
		772	else
		773	default_loop = 0;
582	}	774	}
583		775
584	return ev_method;	776	return default_loop;
585	}	777	}
586		778
587	/*****************************************************************************/
588
589	void	779	void
590	ev_fork_prepare (void)	780	ev_default_destroy (void)
591	{	781	{
592	/* nop */	782	#if EV_MULTIPLICITY
593	}	783	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	784	#endif
608		785
		786	ev_ref (EV_A); /* child watcher */
		787	ev_signal_stop (EV_A_ &childev);
		788
		789	ev_ref (EV_A); /* signal watcher */
609	ev_io_stop (&sigev);	790	ev_io_stop (EV_A_ &sigev);
		791
		792	close (sigpipe [0]); sigpipe [0] = 0;
		793	close (sigpipe [1]); sigpipe [1] = 0;
		794
		795	loop_destroy (EV_A);
		796	}
		797
		798	void
		799	ev_default_fork (void)
		800	{
		801	#if EV_MULTIPLICITY
		802	struct ev_loop *loop = default_loop;
		803	#endif
		804
		805	loop_fork (EV_A);
		806
		807	ev_io_stop (EV_A_ &sigev);
610	close (sigpipe [0]);	808	close (sigpipe [0]);
611	close (sigpipe [1]);	809	close (sigpipe [1]);
612	pipe (sigpipe);	810	pipe (sigpipe);
		811
		812	ev_ref (EV_A); /* signal watcher */
613	siginit ();	813	siginit (EV_A);
614	}	814	}
615		815
616	/*****************************************************************************/	816	/*****************************************************************************/
617		817
618	static void	818	static void
619	call_pending (void)	819	call_pending (EV_P)
620	{	820	{
621	int pri;	821	int pri;
622		822
623	for (pri = NUMPRI; pri--; )	823	for (pri = NUMPRI; pri--; )
624	while (pendingcnt [pri])	824	while (pendingcnt [pri])
…		…
626	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	826	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
627		827
628	if (p->w)	828	if (p->w)
629	{	829	{
630	p->w->pending = 0;	830	p->w->pending = 0;
631	p->w->cb (p->w, p->events);	831	p->w->cb (EV_A_ p->w, p->events);
632	}	832	}
633	}	833	}
634	}	834	}
635		835
636	static void	836	static void
637	timers_reify (void)	837	timers_reify (EV_P)
638	{	838	{
639	while (timercnt && timers [0]->at <= now)	839	while (timercnt && ((WT)timers [0])->at <= mn_now)
640	{	840	{
641	struct ev_timer *w = timers [0];	841	struct ev_timer *w = timers [0];
		842
		843	assert (("inactive timer on timer heap detected", ev_is_active (w)));
642		844
643	/* first reschedule or stop timer */	845	/* first reschedule or stop timer */
644	if (w->repeat)	846	if (w->repeat)
645	{	847	{
646	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	848	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
647	w->at = now + w->repeat;	849	((WT)w)->at = mn_now + w->repeat;
648	downheap ((WT *)timers, timercnt, 0);	850	downheap ((WT *)timers, timercnt, 0);
649	}	851	}
650	else	852	else
651	ev_timer_stop (w); /* nonrepeating: stop timer */	853	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
652		854
653	event ((W)w, EV_TIMEOUT);	855	event (EV_A_ (W)w, EV_TIMEOUT);
654	}	856	}
655	}	857	}
656		858
657	static void	859	static void
658	periodics_reify (void)	860	periodics_reify (EV_P)
659	{	861	{
660	while (periodiccnt && periodics [0]->at <= ev_now)	862	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
661	{	863	{
662	struct ev_periodic *w = periodics [0];	864	struct ev_periodic *w = periodics [0];
		865
		866	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
663		867
664	/* first reschedule or stop timer */	868	/* first reschedule or stop timer */
665	if (w->interval)	869	if (w->interval)
666	{	870	{
667	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	871	((WT)w)->at += floor ((rt_now - ((WT)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));	872	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
669	downheap ((WT *)periodics, periodiccnt, 0);	873	downheap ((WT *)periodics, periodiccnt, 0);
670	}	874	}
671	else	875	else
672	ev_periodic_stop (w); /* nonrepeating: stop timer */	876	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
673		877
674	event ((W)w, EV_PERIODIC);	878	event (EV_A_ (W)w, EV_PERIODIC);
675	}	879	}
676	}	880	}
677		881
678	static void	882	static void
679	periodics_reschedule (ev_tstamp diff)	883	periodics_reschedule (EV_P)
680	{	884	{
681	int i;	885	int i;
682		886
683	/* adjust periodics after time jump */	887	/* adjust periodics after time jump */
684	for (i = 0; i < periodiccnt; ++i)	888	for (i = 0; i < periodiccnt; ++i)
685	{	889	{
686	struct ev_periodic *w = periodics [i];	890	struct ev_periodic *w = periodics [i];
687		891
688	if (w->interval)	892	if (w->interval)
689	{	893	{
690	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	894	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
691		895
692	if (fabs (diff) >= 1e-4)	896	if (fabs (diff) >= 1e-4)
693	{	897	{
694	ev_periodic_stop (w);	898	ev_periodic_stop (EV_A_ w);
695	ev_periodic_start (w);	899	ev_periodic_start (EV_A_ w);
696		900
697	i = 0; /* restart loop, inefficient, but time jumps should be rare */	901	i = 0; /* restart loop, inefficient, but time jumps should be rare */
698	}	902	}
699	}	903	}
700	}	904	}
701	}	905	}
702		906
703	static int	907	inline int
704	time_update_monotonic (void)	908	time_update_monotonic (EV_P)
705	{	909	{
706	now = get_clock ();	910	mn_now = get_clock ();
707		911
708	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	912	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
709	{	913	{
710	ev_now = now + diff;	914	rt_now = rtmn_diff + mn_now;
711	return 0;	915	return 0;
712	}	916	}
713	else	917	else
714	{	918	{
715	now_floor = now;	919	now_floor = mn_now;
716	ev_now = ev_time ();	920	rt_now = ev_time ();
717	return 1;	921	return 1;
718	}	922	}
719	}	923	}
720		924
721	static void	925	static void
722	time_update (void)	926	time_update (EV_P)
723	{	927	{
724	int i;	928	int i;
725		929
726	#if EV_USE_MONOTONIC	930	#if EV_USE_MONOTONIC
727	if (expect_true (have_monotonic))	931	if (expect_true (have_monotonic))
728	{	932	{
729	if (time_update_monotonic ())	933	if (time_update_monotonic (EV_A))
730	{	934	{
731	ev_tstamp odiff = diff;	935	ev_tstamp odiff = rtmn_diff;
732		936
733	for (i = 4; --i; ) /* loop a few times, before making important decisions */	937	for (i = 4; --i; ) /* loop a few times, before making important decisions */
734	{	938	{
735	diff = ev_now - now;	939	rtmn_diff = rt_now - mn_now;
736		940
737	if (fabs (odiff - diff) < MIN_TIMEJUMP)	941	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
738	return; /* all is well */	942	return; /* all is well */
739		943
740	ev_now = ev_time ();	944	rt_now = ev_time ();
741	now = get_clock ();	945	mn_now = get_clock ();
742	now_floor = now;	946	now_floor = mn_now;
743	}	947	}
744		948
745	periodics_reschedule (diff - odiff);	949	periodics_reschedule (EV_A);
746	/* no timer adjustment, as the monotonic clock doesn't jump */	950	/* no timer adjustment, as the monotonic clock doesn't jump */
		951	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
747	}	952	}
748	}	953	}
749	else	954	else
750	#endif	955	#endif
751	{	956	{
752	ev_now = ev_time ();	957	rt_now = ev_time ();
753		958
754	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	959	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
755	{	960	{
756	periodics_reschedule (ev_now - now);	961	periodics_reschedule (EV_A);
757		962
758	/* adjust timers. this is easy, as the offset is the same for all */	963	/* adjust timers. this is easy, as the offset is the same for all */
759	for (i = 0; i < timercnt; ++i)	964	for (i = 0; i < timercnt; ++i)
760	timers [i]->at += diff;	965	((WT)timers [i])->at += rt_now - mn_now;
761	}	966	}
762		967
763	now = ev_now;	968	mn_now = rt_now;
764	}	969	}
765	}	970	}
766		971
767	int ev_loop_done;	972	void
		973	ev_ref (EV_P)
		974	{
		975	++activecnt;
		976	}
768		977
		978	void
		979	ev_unref (EV_P)
		980	{
		981	--activecnt;
		982	}
		983
		984	static int loop_done;
		985
		986	void
769	void ev_loop (int flags)	987	ev_loop (EV_P_ int flags)
770	{	988	{
771	double block;	989	double block;
772	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	990	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
773		991
774	do	992	do
775	{	993	{
776	/* queue check watchers (and execute them) */	994	/* queue check watchers (and execute them) */
777	if (expect_false (preparecnt))	995	if (expect_false (preparecnt))
778	{	996	{
779	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	997	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
780	call_pending ();	998	call_pending (EV_A);
781	}	999	}
782		1000
783	/* update fd-related kernel structures */	1001	/* update fd-related kernel structures */
784	fd_reify ();	1002	fd_reify (EV_A);
785		1003
786	/* calculate blocking time */	1004	/* calculate blocking time */
787		1005
788	/* we only need this for !monotonic clockor timers, but as we basically	1006	/* we only need this for !monotonic clockor timers, but as we basically
789	always have timers, we just calculate it always */	1007	always have timers, we just calculate it always */
790	#if EV_USE_MONOTONIC	1008	#if EV_USE_MONOTONIC
791	if (expect_true (have_monotonic))	1009	if (expect_true (have_monotonic))
792	time_update_monotonic ();	1010	time_update_monotonic (EV_A);
793	else	1011	else
794	#endif	1012	#endif
795	{	1013	{
796	ev_now = ev_time ();	1014	rt_now = ev_time ();
797	now = ev_now;	1015	mn_now = rt_now;
798	}	1016	}
799		1017
800	if (flags & EVLOOP_NONBLOCK || idlecnt)	1018	if (flags & EVLOOP_NONBLOCK || idlecnt)
801	block = 0.;	1019	block = 0.;
802	else	1020	else
803	{	1021	{
804	block = MAX_BLOCKTIME;	1022	block = MAX_BLOCKTIME;
805		1023
806	if (timercnt)	1024	if (timercnt)
807	{	1025	{
808	ev_tstamp to = timers [0]->at - now + method_fudge;	1026	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
809	if (block > to) block = to;	1027	if (block > to) block = to;
810	}	1028	}
811		1029
812	if (periodiccnt)	1030	if (periodiccnt)
813	{	1031	{
814	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1032	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
815	if (block > to) block = to;	1033	if (block > to) block = to;
816	}	1034	}
817		1035
818	if (block < 0.) block = 0.;	1036	if (block < 0.) block = 0.;
819	}	1037	}
820		1038
821	method_poll (block);	1039	method_poll (EV_A_ block);
822		1040
823	/* update ev_now, do magic */	1041	/* update rt_now, do magic */
824	time_update ();	1042	time_update (EV_A);
825		1043
826	/* queue pending timers and reschedule them */	1044	/* queue pending timers and reschedule them */
827	timers_reify (); /* relative timers called last */	1045	timers_reify (EV_A); /* relative timers called last */
828	periodics_reify (); /* absolute timers called first */	1046	periodics_reify (EV_A); /* absolute timers called first */
829		1047
830	/* queue idle watchers unless io or timers are pending */	1048	/* queue idle watchers unless io or timers are pending */
831	if (!pendingcnt)	1049	if (!pendingcnt)
832	queue_events ((W *)idles, idlecnt, EV_IDLE);	1050	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
833		1051
834	/* queue check watchers, to be executed first */	1052	/* queue check watchers, to be executed first */
835	if (checkcnt)	1053	if (checkcnt)
836	queue_events ((W *)checks, checkcnt, EV_CHECK);	1054	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
837		1055
838	call_pending ();	1056	call_pending (EV_A);
839	}	1057	}
840	while (!ev_loop_done);	1058	while (activecnt && !loop_done);
841		1059
842	if (ev_loop_done != 2)	1060	if (loop_done != 2)
843	ev_loop_done = 0;	1061	loop_done = 0;
		1062	}
		1063
		1064	void
		1065	ev_unloop (EV_P_ int how)
		1066	{
		1067	loop_done = how;
844	}	1068	}
845		1069
846	/*****************************************************************************/	1070	/*****************************************************************************/
847		1071
848	static void	1072	inline void
849	wlist_add (WL *head, WL elem)	1073	wlist_add (WL *head, WL elem)
850	{	1074	{
851	elem->next = *head;	1075	elem->next = *head;
852	*head = elem;	1076	*head = elem;
853	}	1077	}
854		1078
855	static void	1079	inline void
856	wlist_del (WL *head, WL elem)	1080	wlist_del (WL *head, WL elem)
857	{	1081	{
858	while (*head)	1082	while (*head)
859	{	1083	{
860	if (*head == elem)	1084	if (*head == elem)
…		…
865		1089
866	head = &(*head)->next;	1090	head = &(*head)->next;
867	}	1091	}
868	}	1092	}
869		1093
870	static void	1094	inline void
871	ev_clear_pending (W w)	1095	ev_clear_pending (EV_P_ W w)
872	{	1096	{
873	if (w->pending)	1097	if (w->pending)
874	{	1098	{
875	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1099	pendings [ABSPRI (w)][w->pending - 1].w = 0;
876	w->pending = 0;	1100	w->pending = 0;
877	}	1101	}
878	}	1102	}
879		1103
880	static void	1104	inline void
881	ev_start (W w, int active)	1105	ev_start (EV_P_ W w, int active)
882	{	1106	{
883	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1107	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
884	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1108	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
885		1109
886	w->active = active;	1110	w->active = active;
		1111	ev_ref (EV_A);
887	}	1112	}
888		1113
889	static void	1114	inline void
890	ev_stop (W w)	1115	ev_stop (EV_P_ W w)
891	{	1116	{
		1117	ev_unref (EV_A);
892	w->active = 0;	1118	w->active = 0;
893	}	1119	}
894		1120
895	/*****************************************************************************/	1121	/*****************************************************************************/
896		1122
897	void	1123	void
898	ev_io_start (struct ev_io *w)	1124	ev_io_start (EV_P_ struct ev_io *w)
899	{	1125	{
900	int fd = w->fd;	1126	int fd = w->fd;
901		1127
902	if (ev_is_active (w))	1128	if (ev_is_active (w))
903	return;	1129	return;
904		1130
905	assert (("ev_io_start called with negative fd", fd >= 0));	1131	assert (("ev_io_start called with negative fd", fd >= 0));
906		1132
907	ev_start ((W)w, 1);	1133	ev_start (EV_A_ (W)w, 1);
908	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1134	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
909	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1135	wlist_add ((WL *)&anfds[fd].head, (WL)w);
910		1136
911	fd_change (fd);	1137	fd_change (EV_A_ fd);
912	}	1138	}
913		1139
914	void	1140	void
915	ev_io_stop (struct ev_io *w)	1141	ev_io_stop (EV_P_ struct ev_io *w)
916	{	1142	{
917	ev_clear_pending ((W)w);	1143	ev_clear_pending (EV_A_ (W)w);
918	if (!ev_is_active (w))	1144	if (!ev_is_active (w))
919	return;	1145	return;
920		1146
921	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1147	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
922	ev_stop ((W)w);	1148	ev_stop (EV_A_ (W)w);
923		1149
924	fd_change (w->fd);	1150	fd_change (EV_A_ w->fd);
925	}	1151	}
926		1152
927	void	1153	void
928	ev_timer_start (struct ev_timer *w)	1154	ev_timer_start (EV_P_ struct ev_timer *w)
929	{	1155	{
930	if (ev_is_active (w))	1156	if (ev_is_active (w))
931	return;	1157	return;
932		1158
933	w->at += now;	1159	((WT)w)->at += mn_now;
934		1160
935	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1161	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
936		1162
937	ev_start ((W)w, ++timercnt);	1163	ev_start (EV_A_ (W)w, ++timercnt);
938	array_needsize (timers, timermax, timercnt, );	1164	array_needsize (timers, timermax, timercnt, );
939	timers [timercnt - 1] = w;	1165	timers [timercnt - 1] = w;
940	upheap ((WT *)timers, timercnt - 1);	1166	upheap ((WT *)timers, timercnt - 1);
941	}
942		1167
		1168	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1169	}
		1170
943	void	1171	void
944	ev_timer_stop (struct ev_timer *w)	1172	ev_timer_stop (EV_P_ struct ev_timer *w)
945	{	1173	{
946	ev_clear_pending ((W)w);	1174	ev_clear_pending (EV_A_ (W)w);
947	if (!ev_is_active (w))	1175	if (!ev_is_active (w))
948	return;	1176	return;
949		1177
		1178	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1179
950	if (w->active < timercnt--)	1180	if (((W)w)->active < timercnt--)
951	{	1181	{
952	timers [w->active - 1] = timers [timercnt];	1182	timers [((W)w)->active - 1] = timers [timercnt];
953	downheap ((WT *)timers, timercnt, w->active - 1);	1183	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
954	}	1184	}
955		1185
956	w->at = w->repeat;	1186	((WT)w)->at = w->repeat;
957		1187
958	ev_stop ((W)w);	1188	ev_stop (EV_A_ (W)w);
959	}	1189	}
960		1190
961	void	1191	void
962	ev_timer_again (struct ev_timer *w)	1192	ev_timer_again (EV_P_ struct ev_timer *w)
963	{	1193	{
964	if (ev_is_active (w))	1194	if (ev_is_active (w))
965	{	1195	{
966	if (w->repeat)	1196	if (w->repeat)
967	{	1197	{
968	w->at = now + w->repeat;	1198	((WT)w)->at = mn_now + w->repeat;
969	downheap ((WT *)timers, timercnt, w->active - 1);	1199	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
970	}	1200	}
971	else	1201	else
972	ev_timer_stop (w);	1202	ev_timer_stop (EV_A_ w);
973	}	1203	}
974	else if (w->repeat)	1204	else if (w->repeat)
975	ev_timer_start (w);	1205	ev_timer_start (EV_A_ w);
976	}	1206	}
977		1207
978	void	1208	void
979	ev_periodic_start (struct ev_periodic *w)	1209	ev_periodic_start (EV_P_ struct ev_periodic *w)
980	{	1210	{
981	if (ev_is_active (w))	1211	if (ev_is_active (w))
982	return;	1212	return;
983		1213
984	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1214	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
985		1215
986	/* this formula differs from the one in periodic_reify because we do not always round up */	1216	/* this formula differs from the one in periodic_reify because we do not always round up */
987	if (w->interval)	1217	if (w->interval)
988	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1218	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
989		1219
990	ev_start ((W)w, ++periodiccnt);	1220	ev_start (EV_A_ (W)w, ++periodiccnt);
991	array_needsize (periodics, periodicmax, periodiccnt, );	1221	array_needsize (periodics, periodicmax, periodiccnt, );
992	periodics [periodiccnt - 1] = w;	1222	periodics [periodiccnt - 1] = w;
993	upheap ((WT *)periodics, periodiccnt - 1);	1223	upheap ((WT *)periodics, periodiccnt - 1);
994	}
995		1224
		1225	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1226	}
		1227
996	void	1228	void
997	ev_periodic_stop (struct ev_periodic *w)	1229	ev_periodic_stop (EV_P_ struct ev_periodic *w)
998	{	1230	{
999	ev_clear_pending ((W)w);	1231	ev_clear_pending (EV_A_ (W)w);
1000	if (!ev_is_active (w))	1232	if (!ev_is_active (w))
1001	return;	1233	return;
1002		1234
		1235	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1236
1003	if (w->active < periodiccnt--)	1237	if (((W)w)->active < periodiccnt--)
1004	{	1238	{
1005	periodics [w->active - 1] = periodics [periodiccnt];	1239	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1006	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1240	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1007	}	1241	}
1008		1242
1009	ev_stop ((W)w);	1243	ev_stop (EV_A_ (W)w);
1010	}	1244	}
1011		1245
1012	void	1246	void
1013	ev_signal_start (struct ev_signal *w)	1247	ev_idle_start (EV_P_ struct ev_idle *w)
1014	{	1248	{
1015	if (ev_is_active (w))	1249	if (ev_is_active (w))
1016	return;	1250	return;
1017		1251
		1252	ev_start (EV_A_ (W)w, ++idlecnt);
		1253	array_needsize (idles, idlemax, idlecnt, );
		1254	idles [idlecnt - 1] = w;
		1255	}
		1256
		1257	void
		1258	ev_idle_stop (EV_P_ struct ev_idle *w)
		1259	{
		1260	ev_clear_pending (EV_A_ (W)w);
		1261	if (ev_is_active (w))
		1262	return;
		1263
		1264	idles [((W)w)->active - 1] = idles [--idlecnt];
		1265	ev_stop (EV_A_ (W)w);
		1266	}
		1267
		1268	void
		1269	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1270	{
		1271	if (ev_is_active (w))
		1272	return;
		1273
		1274	ev_start (EV_A_ (W)w, ++preparecnt);
		1275	array_needsize (prepares, preparemax, preparecnt, );
		1276	prepares [preparecnt - 1] = w;
		1277	}
		1278
		1279	void
		1280	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1281	{
		1282	ev_clear_pending (EV_A_ (W)w);
		1283	if (ev_is_active (w))
		1284	return;
		1285
		1286	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1287	ev_stop (EV_A_ (W)w);
		1288	}
		1289
		1290	void
		1291	ev_check_start (EV_P_ struct ev_check *w)
		1292	{
		1293	if (ev_is_active (w))
		1294	return;
		1295
		1296	ev_start (EV_A_ (W)w, ++checkcnt);
		1297	array_needsize (checks, checkmax, checkcnt, );
		1298	checks [checkcnt - 1] = w;
		1299	}
		1300
		1301	void
		1302	ev_check_stop (EV_P_ struct ev_check *w)
		1303	{
		1304	ev_clear_pending (EV_A_ (W)w);
		1305	if (ev_is_active (w))
		1306	return;
		1307
		1308	checks [((W)w)->active - 1] = checks [--checkcnt];
		1309	ev_stop (EV_A_ (W)w);
		1310	}
		1311
		1312	#ifndef SA_RESTART
		1313	# define SA_RESTART 0
		1314	#endif
		1315
		1316	void
		1317	ev_signal_start (EV_P_ struct ev_signal *w)
		1318	{
		1319	#if EV_MULTIPLICITY
		1320	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1321	#endif
		1322	if (ev_is_active (w))
		1323	return;
		1324
1018	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1325	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1019		1326
1020	ev_start ((W)w, 1);	1327	ev_start (EV_A_ (W)w, 1);
1021	array_needsize (signals, signalmax, w->signum, signals_init);	1328	array_needsize (signals, signalmax, w->signum, signals_init);
1022	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1329	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1023		1330
1024	if (!w->next)	1331	if (!((WL)w)->next)
1025	{	1332	{
		1333	#if WIN32
		1334	signal (w->signum, sighandler);
		1335	#else
1026	struct sigaction sa;	1336	struct sigaction sa;
1027	sa.sa_handler = sighandler;	1337	sa.sa_handler = sighandler;
1028	sigfillset (&sa.sa_mask);	1338	sigfillset (&sa.sa_mask);
1029	sa.sa_flags = 0;	1339	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1030	sigaction (w->signum, &sa, 0);	1340	sigaction (w->signum, &sa, 0);
		1341	#endif
1031	}	1342	}
1032	}	1343	}
1033		1344
1034	void	1345	void
1035	ev_signal_stop (struct ev_signal *w)	1346	ev_signal_stop (EV_P_ struct ev_signal *w)
1036	{	1347	{
1037	ev_clear_pending ((W)w);	1348	ev_clear_pending (EV_A_ (W)w);
1038	if (!ev_is_active (w))	1349	if (!ev_is_active (w))
1039	return;	1350	return;
1040		1351
1041	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1352	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1042	ev_stop ((W)w);	1353	ev_stop (EV_A_ (W)w);
1043		1354
1044	if (!signals [w->signum - 1].head)	1355	if (!signals [w->signum - 1].head)
1045	signal (w->signum, SIG_DFL);	1356	signal (w->signum, SIG_DFL);
1046	}	1357	}
1047		1358
1048	void	1359	void
1049	ev_idle_start (struct ev_idle *w)	1360	ev_child_start (EV_P_ struct ev_child *w)
1050	{	1361	{
		1362	#if EV_MULTIPLICITY
		1363	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1364	#endif
1051	if (ev_is_active (w))	1365	if (ev_is_active (w))
1052	return;	1366	return;
1053		1367
1054	ev_start ((W)w, ++idlecnt);	1368	ev_start (EV_A_ (W)w, 1);
1055	array_needsize (idles, idlemax, idlecnt, );	1369	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1056	idles [idlecnt - 1] = w;
1057	}	1370	}
1058		1371
1059	void	1372	void
1060	ev_idle_stop (struct ev_idle *w)	1373	ev_child_stop (EV_P_ struct ev_child *w)
1061	{	1374	{
1062	ev_clear_pending ((W)w);	1375	ev_clear_pending (EV_A_ (W)w);
1063	if (ev_is_active (w))	1376	if (ev_is_active (w))
1064	return;	1377	return;
1065		1378
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);	1379	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1132	ev_stop ((W)w);	1380	ev_stop (EV_A_ (W)w);
1133	}	1381	}
1134		1382
1135	/*****************************************************************************/	1383	/*****************************************************************************/
1136		1384
1137	struct ev_once	1385	struct ev_once
…		…
1141	void (*cb)(int revents, void *arg);	1389	void (*cb)(int revents, void *arg);
1142	void *arg;	1390	void *arg;
1143	};	1391	};
1144		1392
1145	static void	1393	static void
1146	once_cb (struct ev_once *once, int revents)	1394	once_cb (EV_P_ struct ev_once *once, int revents)
1147	{	1395	{
1148	void (*cb)(int revents, void *arg) = once->cb;	1396	void (*cb)(int revents, void *arg) = once->cb;
1149	void *arg = once->arg;	1397	void *arg = once->arg;
1150		1398
1151	ev_io_stop (&once->io);	1399	ev_io_stop (EV_A_ &once->io);
1152	ev_timer_stop (&once->to);	1400	ev_timer_stop (EV_A_ &once->to);
1153	free (once);	1401	free (once);
1154		1402
1155	cb (revents, arg);	1403	cb (revents, arg);
1156	}	1404	}
1157		1405
1158	static void	1406	static void
1159	once_cb_io (struct ev_io *w, int revents)	1407	once_cb_io (EV_P_ struct ev_io *w, int revents)
1160	{	1408	{
1161	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1409	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1162	}	1410	}
1163		1411
1164	static void	1412	static void
1165	once_cb_to (struct ev_timer *w, int revents)	1413	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1166	{	1414	{
1167	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1415	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1168	}	1416	}
1169		1417
1170	void	1418	void
1171	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1419	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1172	{	1420	{
1173	struct ev_once *once = malloc (sizeof (struct ev_once));	1421	struct ev_once *once = malloc (sizeof (struct ev_once));
1174		1422
1175	if (!once)	1423	if (!once)
1176	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1424	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
…		…
1181		1429
1182	ev_watcher_init (&once->io, once_cb_io);	1430	ev_watcher_init (&once->io, once_cb_io);
1183	if (fd >= 0)	1431	if (fd >= 0)
1184	{	1432	{
1185	ev_io_set (&once->io, fd, events);	1433	ev_io_set (&once->io, fd, events);
1186	ev_io_start (&once->io);	1434	ev_io_start (EV_A_ &once->io);
1187	}	1435	}
1188		1436
1189	ev_watcher_init (&once->to, once_cb_to);	1437	ev_watcher_init (&once->to, once_cb_to);
1190	if (timeout >= 0.)	1438	if (timeout >= 0.)
1191	{	1439	{
1192	ev_timer_set (&once->to, timeout, 0.);	1440	ev_timer_set (&once->to, timeout, 0.);
1193	ev_timer_start (&once->to);	1441	ev_timer_start (EV_A_ &once->to);
1194	}	1442	}
1195	}	1443	}
1196	}	1444	}
1197		1445
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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