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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 1.68 by root, Mon Nov 5 20:19:00 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	WL 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);
330	fd_kill (fd);	381	fd_kill (EV_A_ fd);
331	return;	382	return;
332	}	383	}
333	}	384	}
334		385
		386	/* susually called after fork if method needs to re-arm all fds from scratch */
		387	static void
		388	fd_rearm_all (EV_P)
		389	{
		390	int fd;
		391
		392	/* this should be highly optimised to not do anything but set a flag */
		393	for (fd = 0; fd < anfdmax; ++fd)
		394	if (anfds [fd].events)
		395	{
		396	anfds [fd].events = 0;
		397	fd_change (EV_A_ fd);
		398	}
		399	}
		400
335	/*****************************************************************************/	401	/*****************************************************************************/
336		402
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	403	static void
344	upheap (WT *timers, int k)	404	upheap (WT *heap, int k)
345	{	405	{
346	WT w = timers [k];	406	WT w = heap [k];
347		407
348	while (k && timers [k >> 1]->at > w->at)	408	while (k && heap [k >> 1]->at > w->at)
349	{	409	{
350	timers [k] = timers [k >> 1];	410	heap [k] = heap [k >> 1];
351	timers [k]->active = k + 1;	411	((W)heap [k])->active = k + 1;
352	k >>= 1;	412	k >>= 1;
353	}	413	}
354		414
355	timers [k] = w;	415	heap [k] = w;
356	timers [k]->active = k + 1;	416	((W)heap [k])->active = k + 1;
357		417
358	}	418	}
359		419
360	static void	420	static void
361	downheap (WT *timers, int N, int k)	421	downheap (WT *heap, int N, int k)
362	{	422	{
363	WT w = timers [k];	423	WT w = heap [k];
364		424
365	while (k < (N >> 1))	425	while (k < (N >> 1))
366	{	426	{
367	int j = k << 1;	427	int j = k << 1;
368		428
369	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	429	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
370	++j;	430	++j;
371		431
372	if (w->at <= timers [j]->at)	432	if (w->at <= heap [j]->at)
373	break;	433	break;
374		434
375	timers [k] = timers [j];	435	heap [k] = heap [j];
376	timers [k]->active = k + 1;	436	((W)heap [k])->active = k + 1;
377	k = j;	437	k = j;
378	}	438	}
379		439
380	timers [k] = w;	440	heap [k] = w;
381	timers [k]->active = k + 1;	441	((W)heap [k])->active = k + 1;
382	}	442	}
383		443
384	/*****************************************************************************/	444	/*****************************************************************************/
385		445
386	typedef struct	446	typedef struct
387	{	447	{
388	struct ev_signal *head;	448	WL head;
389	sig_atomic_t volatile gotsig;	449	sig_atomic_t volatile gotsig;
390	} ANSIG;	450	} ANSIG;
391		451
392	static ANSIG *signals;	452	static ANSIG *signals;
393	static int signalmax;	453	static int signalmax;
…		…
409	}	469	}
410		470
411	static void	471	static void
412	sighandler (int signum)	472	sighandler (int signum)
413	{	473	{
		474	#if WIN32
		475	signal (signum, sighandler);
		476	#endif
		477
414	signals [signum - 1].gotsig = 1;	478	signals [signum - 1].gotsig = 1;
415		479
416	if (!gotsig)	480	if (!gotsig)
417	{	481	{
		482	int old_errno = errno;
418	gotsig = 1;	483	gotsig = 1;
419	write (sigpipe [1], &signum, 1);	484	write (sigpipe [1], &signum, 1);
		485	errno = old_errno;
420	}	486	}
421	}	487	}
422		488
423	static void	489	static void
424	sigcb (struct ev_io *iow, int revents)	490	sigcb (EV_P_ struct ev_io *iow, int revents)
425	{	491	{
426	struct ev_signal *w;	492	WL w;
427	int signum;	493	int signum;
428		494
429	read (sigpipe [0], &revents, 1);	495	read (sigpipe [0], &revents, 1);
430	gotsig = 0;	496	gotsig = 0;
431		497
…		…
433	if (signals [signum].gotsig)	499	if (signals [signum].gotsig)
434	{	500	{
435	signals [signum].gotsig = 0;	501	signals [signum].gotsig = 0;
436		502
437	for (w = signals [signum].head; w; w = w->next)	503	for (w = signals [signum].head; w; w = w->next)
438	event ((W)w, EV_SIGNAL);	504	event (EV_A_ (W)w, EV_SIGNAL);
439	}	505	}
440	}	506	}
441		507
442	static void	508	static void
443	siginit (void)	509	siginit (EV_P)
444	{	510	{
445	#ifndef WIN32	511	#ifndef WIN32
446	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	512	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
447	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	513	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
448		514
…		…
450	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	516	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
451	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	517	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
452	#endif	518	#endif
453		519
454	ev_io_set (&sigev, sigpipe [0], EV_READ);	520	ev_io_set (&sigev, sigpipe [0], EV_READ);
455	ev_io_start (&sigev);	521	ev_io_start (EV_A_ &sigev);
		522	ev_unref (EV_A); /* child watcher should not keep loop alive */
456	}	523	}
457		524
458	/*****************************************************************************/	525	/*****************************************************************************/
459		526
460	static struct ev_idle **idles;	527	#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		528
471	static struct ev_child *childs [PID_HASHSIZE];	529	static struct ev_child *childs [PID_HASHSIZE];
472	static struct ev_signal childev;	530	static struct ev_signal childev;
473		531
474	#ifndef WIN32
475
476	#ifndef WCONTINUED	532	#ifndef WCONTINUED
477	# define WCONTINUED 0	533	# define WCONTINUED 0
478	#endif	534	#endif
479		535
480	static void	536	static void
481	childcb (struct ev_signal *sw, int revents)	537	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
482	{	538	{
483	struct ev_child *w;	539	struct ev_child *w;
		540
		541	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		542	if (w->pid == pid || !w->pid)
		543	{
		544	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		545	w->rpid = pid;
		546	w->rstatus = status;
		547	event (EV_A_ (W)w, EV_CHILD);
		548	}
		549	}
		550
		551	static void
		552	childcb (EV_P_ struct ev_signal *sw, int revents)
		553	{
484	int pid, status;	554	int pid, status;
485		555
486	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	556	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
487	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	557	{
488	if (w->pid == pid || !w->pid)	558	/* make sure we are called again until all childs have been reaped */
489	{	559	event (EV_A_ (W)sw, EV_SIGNAL);
490	w->rpid = pid;	560
491	w->rstatus = status;	561	child_reap (EV_A_ sw, pid, pid, status);
492	event ((W)w, EV_CHILD);	562	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
493	}	563	}
494	}	564	}
495		565
496	#endif	566	#endif
497		567
498	/*****************************************************************************/	568	/*****************************************************************************/
…		…
520	ev_version_minor (void)	590	ev_version_minor (void)
521	{	591	{
522	return EV_VERSION_MINOR;	592	return EV_VERSION_MINOR;
523	}	593	}
524		594
525	/* return true if we are running with elevated privileges and ignore env variables */	595	/* return true if we are running with elevated privileges and should ignore env variables */
526	static int	596	static int
527	enable_secure ()	597	enable_secure (void)
528	{	598	{
		599	#ifdef WIN32
		600	return 0;
		601	#else
529	return getuid () != geteuid ()	602	return getuid () != geteuid ()
530	|| getgid () != getegid ();	603	|| getgid () != getegid ();
		604	#endif
531	}	605	}
532		606
533	int ev_init (int methods)	607	int
		608	ev_method (EV_P)
534	{	609	{
		610	return method;
		611	}
		612
		613	static void
		614	loop_init (EV_P_ int methods)
		615	{
535	if (!ev_method)	616	if (!method)
536	{	617	{
537	#if EV_USE_MONOTONIC	618	#if EV_USE_MONOTONIC
538	{	619	{
539	struct timespec ts;	620	struct timespec ts;
540	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	621	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
541	have_monotonic = 1;	622	have_monotonic = 1;
542	}	623	}
543	#endif	624	#endif
544		625
545	ev_now = ev_time ();	626	rt_now = ev_time ();
546	now = get_clock ();	627	mn_now = get_clock ();
547	now_floor = now;	628	now_floor = mn_now;
548	diff = ev_now - now;	629	rtmn_diff = rt_now - mn_now;
549
550	if (pipe (sigpipe))
551	return 0;
552		630
553	if (methods == EVMETHOD_AUTO)	631	if (methods == EVMETHOD_AUTO)
554	if (!enable_secure () && getenv ("LIBEV_METHODS"))	632	if (!enable_secure () && getenv ("LIBEV_METHODS"))
555	methods = atoi (getenv ("LIBEV_METHODS"));	633	methods = atoi (getenv ("LIBEV_METHODS"));
556	else	634	else
557	methods = EVMETHOD_ANY;	635	methods = EVMETHOD_ANY;
558		636
559	ev_method = 0;	637	method = 0;
		638	#if EV_USE_WIN32
		639	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		640	#endif
560	#if EV_USE_KQUEUE	641	#if EV_USE_KQUEUE
561	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	642	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
562	#endif	643	#endif
563	#if EV_USE_EPOLL	644	#if EV_USE_EPOLL
564	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	645	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
565	#endif	646	#endif
566	#if EV_USE_POLL	647	#if EV_USE_POLL
567	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	648	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
568	#endif	649	#endif
569	#if EV_USE_SELECT	650	#if EV_USE_SELECT
570	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	651	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
571	#endif	652	#endif
		653	}
		654	}
572		655
		656	void
		657	loop_destroy (EV_P)
		658	{
		659	int i;
		660
		661	#if EV_USE_WIN32
		662	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		663	#endif
		664	#if EV_USE_KQUEUE
		665	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		666	#endif
		667	#if EV_USE_EPOLL
		668	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		669	#endif
		670	#if EV_USE_POLL
		671	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		672	#endif
		673	#if EV_USE_SELECT
		674	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		675	#endif
		676
		677	for (i = NUMPRI; i--; )
		678	array_free (pending, [i]);
		679
		680	array_free (fdchange, );
		681	array_free (timer, );
		682	array_free (periodic, );
		683	array_free (idle, );
		684	array_free (prepare, );
		685	array_free (check, );
		686
		687	method = 0;
		688	/*TODO*/
		689	}
		690
		691	void
		692	loop_fork (EV_P)
		693	{
		694	/*TODO*/
		695	#if EV_USE_EPOLL
		696	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		697	#endif
		698	#if EV_USE_KQUEUE
		699	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		700	#endif
		701	}
		702
		703	#if EV_MULTIPLICITY
		704	struct ev_loop *
		705	ev_loop_new (int methods)
		706	{
		707	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));
		708
		709	loop_init (EV_A_ methods);
		710
		711	if (ev_method (EV_A))
		712	return loop;
		713
		714	return 0;
		715	}
		716
		717	void
		718	ev_loop_destroy (EV_P)
		719	{
		720	loop_destroy (EV_A);
		721	free (loop);
		722	}
		723
		724	void
		725	ev_loop_fork (EV_P)
		726	{
		727	loop_fork (EV_A);
		728	}
		729
		730	#endif
		731
		732	#if EV_MULTIPLICITY
		733	struct ev_loop default_loop_struct;
		734	static struct ev_loop *default_loop;
		735
		736	struct ev_loop *
		737	#else
		738	static int default_loop;
		739
		740	int
		741	#endif
		742	ev_default_loop (int methods)
		743	{
		744	if (sigpipe [0] == sigpipe [1])
		745	if (pipe (sigpipe))
		746	return 0;
		747
		748	if (!default_loop)
		749	{
		750	#if EV_MULTIPLICITY
		751	struct ev_loop *loop = default_loop = &default_loop_struct;
		752	#else
		753	default_loop = 1;
		754	#endif
		755
		756	loop_init (EV_A_ methods);
		757
573	if (ev_method)	758	if (ev_method (EV_A))
574	{	759	{
575	ev_watcher_init (&sigev, sigcb);	760	ev_watcher_init (&sigev, sigcb);
		761	ev_set_priority (&sigev, EV_MAXPRI);
576	siginit ();	762	siginit (EV_A);
577		763
578	#ifndef WIN32	764	#ifndef WIN32
579	ev_signal_init (&childev, childcb, SIGCHLD);	765	ev_signal_init (&childev, childcb, SIGCHLD);
		766	ev_set_priority (&childev, EV_MAXPRI);
580	ev_signal_start (&childev);	767	ev_signal_start (EV_A_ &childev);
		768	ev_unref (EV_A); /* child watcher should not keep loop alive */
581	#endif	769	#endif
582	}	770	}
		771	else
		772	default_loop = 0;
583	}	773	}
584		774
585	return ev_method;	775	return default_loop;
586	}	776	}
587		777
588	/*****************************************************************************/
589
590	void	778	void
591	ev_fork_prepare (void)	779	ev_default_destroy (void)
592	{	780	{
593	/* nop */	781	#if EV_MULTIPLICITY
594	}	782	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	783	#endif
609		784
		785	ev_ref (EV_A); /* child watcher */
		786	ev_signal_stop (EV_A_ &childev);
		787
		788	ev_ref (EV_A); /* signal watcher */
610	ev_io_stop (&sigev);	789	ev_io_stop (EV_A_ &sigev);
		790
		791	close (sigpipe [0]); sigpipe [0] = 0;
		792	close (sigpipe [1]); sigpipe [1] = 0;
		793
		794	loop_destroy (EV_A);
		795	}
		796
		797	void
		798	ev_default_fork (void)
		799	{
		800	#if EV_MULTIPLICITY
		801	struct ev_loop *loop = default_loop;
		802	#endif
		803
		804	loop_fork (EV_A);
		805
		806	ev_io_stop (EV_A_ &sigev);
611	close (sigpipe [0]);	807	close (sigpipe [0]);
612	close (sigpipe [1]);	808	close (sigpipe [1]);
613	pipe (sigpipe);	809	pipe (sigpipe);
		810
		811	ev_ref (EV_A); /* signal watcher */
614	siginit ();	812	siginit (EV_A);
615	}	813	}
616		814
617	/*****************************************************************************/	815	/*****************************************************************************/
618		816
619	static void	817	static void
620	call_pending (void)	818	call_pending (EV_P)
621	{	819	{
622	int pri;	820	int pri;
623		821
624	for (pri = NUMPRI; pri--; )	822	for (pri = NUMPRI; pri--; )
625	while (pendingcnt [pri])	823	while (pendingcnt [pri])
…		…
627	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	825	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
628		826
629	if (p->w)	827	if (p->w)
630	{	828	{
631	p->w->pending = 0;	829	p->w->pending = 0;
632	p->w->cb (p->w, p->events);	830	p->w->cb (EV_A_ p->w, p->events);
633	}	831	}
634	}	832	}
635	}	833	}
636		834
637	static void	835	static void
638	timers_reify (void)	836	timers_reify (EV_P)
639	{	837	{
640	while (timercnt && timers [0]->at <= now)	838	while (timercnt && ((WT)timers [0])->at <= mn_now)
641	{	839	{
642	struct ev_timer *w = timers [0];	840	struct ev_timer *w = timers [0];
		841
		842	assert (("inactive timer on timer heap detected", ev_is_active (w)));
643		843
644	/* first reschedule or stop timer */	844	/* first reschedule or stop timer */
645	if (w->repeat)	845	if (w->repeat)
646	{	846	{
647	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	847	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
648	w->at = now + w->repeat;	848	((WT)w)->at = mn_now + w->repeat;
649	downheap ((WT *)timers, timercnt, 0);	849	downheap ((WT *)timers, timercnt, 0);
650	}	850	}
651	else	851	else
652	ev_timer_stop (w); /* nonrepeating: stop timer */	852	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
653		853
654	event ((W)w, EV_TIMEOUT);	854	event (EV_A_ (W)w, EV_TIMEOUT);
655	}	855	}
656	}	856	}
657		857
658	static void	858	static void
659	periodics_reify (void)	859	periodics_reify (EV_P)
660	{	860	{
661	while (periodiccnt && periodics [0]->at <= ev_now)	861	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
662	{	862	{
663	struct ev_periodic *w = periodics [0];	863	struct ev_periodic *w = periodics [0];
		864
		865	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
664		866
665	/* first reschedule or stop timer */	867	/* first reschedule or stop timer */
666	if (w->interval)	868	if (w->interval)
667	{	869	{
668	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	870	((WT)w)->at += floor ((rt_now - ((WT)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));	871	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
670	downheap ((WT *)periodics, periodiccnt, 0);	872	downheap ((WT *)periodics, periodiccnt, 0);
671	}	873	}
672	else	874	else
673	ev_periodic_stop (w); /* nonrepeating: stop timer */	875	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
674		876
675	event ((W)w, EV_PERIODIC);	877	event (EV_A_ (W)w, EV_PERIODIC);
676	}	878	}
677	}	879	}
678		880
679	static void	881	static void
680	periodics_reschedule (ev_tstamp diff)	882	periodics_reschedule (EV_P)
681	{	883	{
682	int i;	884	int i;
683		885
684	/* adjust periodics after time jump */	886	/* adjust periodics after time jump */
685	for (i = 0; i < periodiccnt; ++i)	887	for (i = 0; i < periodiccnt; ++i)
686	{	888	{
687	struct ev_periodic *w = periodics [i];	889	struct ev_periodic *w = periodics [i];
688		890
689	if (w->interval)	891	if (w->interval)
690	{	892	{
691	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	893	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
692		894
693	if (fabs (diff) >= 1e-4)	895	if (fabs (diff) >= 1e-4)
694	{	896	{
695	ev_periodic_stop (w);	897	ev_periodic_stop (EV_A_ w);
696	ev_periodic_start (w);	898	ev_periodic_start (EV_A_ w);
697		899
698	i = 0; /* restart loop, inefficient, but time jumps should be rare */	900	i = 0; /* restart loop, inefficient, but time jumps should be rare */
699	}	901	}
700	}	902	}
701	}	903	}
702	}	904	}
703		905
704	static int	906	inline int
705	time_update_monotonic (void)	907	time_update_monotonic (EV_P)
706	{	908	{
707	now = get_clock ();	909	mn_now = get_clock ();
708		910
709	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	911	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
710	{	912	{
711	ev_now = now + diff;	913	rt_now = rtmn_diff + mn_now;
712	return 0;	914	return 0;
713	}	915	}
714	else	916	else
715	{	917	{
716	now_floor = now;	918	now_floor = mn_now;
717	ev_now = ev_time ();	919	rt_now = ev_time ();
718	return 1;	920	return 1;
719	}	921	}
720	}	922	}
721		923
722	static void	924	static void
723	time_update (void)	925	time_update (EV_P)
724	{	926	{
725	int i;	927	int i;
726		928
727	#if EV_USE_MONOTONIC	929	#if EV_USE_MONOTONIC
728	if (expect_true (have_monotonic))	930	if (expect_true (have_monotonic))
729	{	931	{
730	if (time_update_monotonic ())	932	if (time_update_monotonic (EV_A))
731	{	933	{
732	ev_tstamp odiff = diff;	934	ev_tstamp odiff = rtmn_diff;
733		935
734	for (i = 4; --i; ) /* loop a few times, before making important decisions */	936	for (i = 4; --i; ) /* loop a few times, before making important decisions */
735	{	937	{
736	diff = ev_now - now;	938	rtmn_diff = rt_now - mn_now;
737		939
738	if (fabs (odiff - diff) < MIN_TIMEJUMP)	940	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
739	return; /* all is well */	941	return; /* all is well */
740		942
741	ev_now = ev_time ();	943	rt_now = ev_time ();
742	now = get_clock ();	944	mn_now = get_clock ();
743	now_floor = now;	945	now_floor = mn_now;
744	}	946	}
745		947
746	periodics_reschedule (diff - odiff);	948	periodics_reschedule (EV_A);
747	/* no timer adjustment, as the monotonic clock doesn't jump */	949	/* no timer adjustment, as the monotonic clock doesn't jump */
		950	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
748	}	951	}
749	}	952	}
750	else	953	else
751	#endif	954	#endif
752	{	955	{
753	ev_now = ev_time ();	956	rt_now = ev_time ();
754		957
755	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	958	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
756	{	959	{
757	periodics_reschedule (ev_now - now);	960	periodics_reschedule (EV_A);
758		961
759	/* adjust timers. this is easy, as the offset is the same for all */	962	/* adjust timers. this is easy, as the offset is the same for all */
760	for (i = 0; i < timercnt; ++i)	963	for (i = 0; i < timercnt; ++i)
761	timers [i]->at += diff;	964	((WT)timers [i])->at += rt_now - mn_now;
762	}	965	}
763		966
764	now = ev_now;	967	mn_now = rt_now;
765	}	968	}
766	}	969	}
767		970
768	int ev_loop_done;	971	void
		972	ev_ref (EV_P)
		973	{
		974	++activecnt;
		975	}
769		976
		977	void
		978	ev_unref (EV_P)
		979	{
		980	--activecnt;
		981	}
		982
		983	static int loop_done;
		984
		985	void
770	void ev_loop (int flags)	986	ev_loop (EV_P_ int flags)
771	{	987	{
772	double block;	988	double block;
773	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	989	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
774		990
775	do	991	do
776	{	992	{
777	/* queue check watchers (and execute them) */	993	/* queue check watchers (and execute them) */
778	if (expect_false (preparecnt))	994	if (expect_false (preparecnt))
779	{	995	{
780	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	996	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
781	call_pending ();	997	call_pending (EV_A);
782	}	998	}
783		999
784	/* update fd-related kernel structures */	1000	/* update fd-related kernel structures */
785	fd_reify ();	1001	fd_reify (EV_A);
786		1002
787	/* calculate blocking time */	1003	/* calculate blocking time */
788		1004
789	/* we only need this for !monotonic clockor timers, but as we basically	1005	/* we only need this for !monotonic clockor timers, but as we basically
790	always have timers, we just calculate it always */	1006	always have timers, we just calculate it always */
791	#if EV_USE_MONOTONIC	1007	#if EV_USE_MONOTONIC
792	if (expect_true (have_monotonic))	1008	if (expect_true (have_monotonic))
793	time_update_monotonic ();	1009	time_update_monotonic (EV_A);
794	else	1010	else
795	#endif	1011	#endif
796	{	1012	{
797	ev_now = ev_time ();	1013	rt_now = ev_time ();
798	now = ev_now;	1014	mn_now = rt_now;
799	}	1015	}
800		1016
801	if (flags & EVLOOP_NONBLOCK || idlecnt)	1017	if (flags & EVLOOP_NONBLOCK || idlecnt)
802	block = 0.;	1018	block = 0.;
803	else	1019	else
804	{	1020	{
805	block = MAX_BLOCKTIME;	1021	block = MAX_BLOCKTIME;
806		1022
807	if (timercnt)	1023	if (timercnt)
808	{	1024	{
809	ev_tstamp to = timers [0]->at - now + method_fudge;	1025	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
810	if (block > to) block = to;	1026	if (block > to) block = to;
811	}	1027	}
812		1028
813	if (periodiccnt)	1029	if (periodiccnt)
814	{	1030	{
815	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1031	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
816	if (block > to) block = to;	1032	if (block > to) block = to;
817	}	1033	}
818		1034
819	if (block < 0.) block = 0.;	1035	if (block < 0.) block = 0.;
820	}	1036	}
821		1037
822	method_poll (block);	1038	method_poll (EV_A_ block);
823		1039
824	/* update ev_now, do magic */	1040	/* update rt_now, do magic */
825	time_update ();	1041	time_update (EV_A);
826		1042
827	/* queue pending timers and reschedule them */	1043	/* queue pending timers and reschedule them */
828	timers_reify (); /* relative timers called last */	1044	timers_reify (EV_A); /* relative timers called last */
829	periodics_reify (); /* absolute timers called first */	1045	periodics_reify (EV_A); /* absolute timers called first */
830		1046
831	/* queue idle watchers unless io or timers are pending */	1047	/* queue idle watchers unless io or timers are pending */
832	if (!pendingcnt)	1048	if (!pendingcnt)
833	queue_events ((W *)idles, idlecnt, EV_IDLE);	1049	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
834		1050
835	/* queue check watchers, to be executed first */	1051	/* queue check watchers, to be executed first */
836	if (checkcnt)	1052	if (checkcnt)
837	queue_events ((W *)checks, checkcnt, EV_CHECK);	1053	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
838		1054
839	call_pending ();	1055	call_pending (EV_A);
840	}	1056	}
841	while (!ev_loop_done);	1057	while (activecnt && !loop_done);
842		1058
843	if (ev_loop_done != 2)	1059	if (loop_done != 2)
844	ev_loop_done = 0;	1060	loop_done = 0;
		1061	}
		1062
		1063	void
		1064	ev_unloop (EV_P_ int how)
		1065	{
		1066	loop_done = how;
845	}	1067	}
846		1068
847	/*****************************************************************************/	1069	/*****************************************************************************/
848		1070
849	static void	1071	inline void
850	wlist_add (WL *head, WL elem)	1072	wlist_add (WL *head, WL elem)
851	{	1073	{
852	elem->next = *head;	1074	elem->next = *head;
853	*head = elem;	1075	*head = elem;
854	}	1076	}
855		1077
856	static void	1078	inline void
857	wlist_del (WL *head, WL elem)	1079	wlist_del (WL *head, WL elem)
858	{	1080	{
859	while (*head)	1081	while (*head)
860	{	1082	{
861	if (*head == elem)	1083	if (*head == elem)
…		…
866		1088
867	head = &(*head)->next;	1089	head = &(*head)->next;
868	}	1090	}
869	}	1091	}
870		1092
871	static void	1093	inline void
872	ev_clear_pending (W w)	1094	ev_clear_pending (EV_P_ W w)
873	{	1095	{
874	if (w->pending)	1096	if (w->pending)
875	{	1097	{
876	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1098	pendings [ABSPRI (w)][w->pending - 1].w = 0;
877	w->pending = 0;	1099	w->pending = 0;
878	}	1100	}
879	}	1101	}
880		1102
881	static void	1103	inline void
882	ev_start (W w, int active)	1104	ev_start (EV_P_ W w, int active)
883	{	1105	{
884	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1106	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
885	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1107	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
886		1108
887	w->active = active;	1109	w->active = active;
		1110	ev_ref (EV_A);
888	}	1111	}
889		1112
890	static void	1113	inline void
891	ev_stop (W w)	1114	ev_stop (EV_P_ W w)
892	{	1115	{
		1116	ev_unref (EV_A);
893	w->active = 0;	1117	w->active = 0;
894	}	1118	}
895		1119
896	/*****************************************************************************/	1120	/*****************************************************************************/
897		1121
898	void	1122	void
899	ev_io_start (struct ev_io *w)	1123	ev_io_start (EV_P_ struct ev_io *w)
900	{	1124	{
901	int fd = w->fd;	1125	int fd = w->fd;
902		1126
903	if (ev_is_active (w))	1127	if (ev_is_active (w))
904	return;	1128	return;
905		1129
906	assert (("ev_io_start called with negative fd", fd >= 0));	1130	assert (("ev_io_start called with negative fd", fd >= 0));
907		1131
908	ev_start ((W)w, 1);	1132	ev_start (EV_A_ (W)w, 1);
909	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1133	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
910	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1134	wlist_add ((WL *)&anfds[fd].head, (WL)w);
911		1135
912	fd_change (fd);	1136	fd_change (EV_A_ fd);
913	}	1137	}
914		1138
915	void	1139	void
916	ev_io_stop (struct ev_io *w)	1140	ev_io_stop (EV_P_ struct ev_io *w)
917	{	1141	{
918	ev_clear_pending ((W)w);	1142	ev_clear_pending (EV_A_ (W)w);
919	if (!ev_is_active (w))	1143	if (!ev_is_active (w))
920	return;	1144	return;
921		1145
922	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1146	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
923	ev_stop ((W)w);	1147	ev_stop (EV_A_ (W)w);
924		1148
925	fd_change (w->fd);	1149	fd_change (EV_A_ w->fd);
926	}	1150	}
927		1151
928	void	1152	void
929	ev_timer_start (struct ev_timer *w)	1153	ev_timer_start (EV_P_ struct ev_timer *w)
930	{	1154	{
931	if (ev_is_active (w))	1155	if (ev_is_active (w))
932	return;	1156	return;
933		1157
934	w->at += now;	1158	((WT)w)->at += mn_now;
935		1159
936	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1160	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
937		1161
938	ev_start ((W)w, ++timercnt);	1162	ev_start (EV_A_ (W)w, ++timercnt);
939	array_needsize (timers, timermax, timercnt, );	1163	array_needsize (timers, timermax, timercnt, );
940	timers [timercnt - 1] = w;	1164	timers [timercnt - 1] = w;
941	upheap ((WT *)timers, timercnt - 1);	1165	upheap ((WT *)timers, timercnt - 1);
942	}
943		1166
		1167	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1168	}
		1169
944	void	1170	void
945	ev_timer_stop (struct ev_timer *w)	1171	ev_timer_stop (EV_P_ struct ev_timer *w)
946	{	1172	{
947	ev_clear_pending ((W)w);	1173	ev_clear_pending (EV_A_ (W)w);
948	if (!ev_is_active (w))	1174	if (!ev_is_active (w))
949	return;	1175	return;
950		1176
		1177	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1178
951	if (w->active < timercnt--)	1179	if (((W)w)->active < timercnt--)
952	{	1180	{
953	timers [w->active - 1] = timers [timercnt];	1181	timers [((W)w)->active - 1] = timers [timercnt];
954	downheap ((WT *)timers, timercnt, w->active - 1);	1182	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
955	}	1183	}
956		1184
957	w->at = w->repeat;	1185	((WT)w)->at = w->repeat;
958		1186
959	ev_stop ((W)w);	1187	ev_stop (EV_A_ (W)w);
960	}	1188	}
961		1189
962	void	1190	void
963	ev_timer_again (struct ev_timer *w)	1191	ev_timer_again (EV_P_ struct ev_timer *w)
964	{	1192	{
965	if (ev_is_active (w))	1193	if (ev_is_active (w))
966	{	1194	{
967	if (w->repeat)	1195	if (w->repeat)
968	{	1196	{
969	w->at = now + w->repeat;	1197	((WT)w)->at = mn_now + w->repeat;
970	downheap ((WT *)timers, timercnt, w->active - 1);	1198	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
971	}	1199	}
972	else	1200	else
973	ev_timer_stop (w);	1201	ev_timer_stop (EV_A_ w);
974	}	1202	}
975	else if (w->repeat)	1203	else if (w->repeat)
976	ev_timer_start (w);	1204	ev_timer_start (EV_A_ w);
977	}	1205	}
978		1206
979	void	1207	void
980	ev_periodic_start (struct ev_periodic *w)	1208	ev_periodic_start (EV_P_ struct ev_periodic *w)
981	{	1209	{
982	if (ev_is_active (w))	1210	if (ev_is_active (w))
983	return;	1211	return;
984		1212
985	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1213	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
986		1214
987	/* this formula differs from the one in periodic_reify because we do not always round up */	1215	/* this formula differs from the one in periodic_reify because we do not always round up */
988	if (w->interval)	1216	if (w->interval)
989	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1217	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
990		1218
991	ev_start ((W)w, ++periodiccnt);	1219	ev_start (EV_A_ (W)w, ++periodiccnt);
992	array_needsize (periodics, periodicmax, periodiccnt, );	1220	array_needsize (periodics, periodicmax, periodiccnt, );
993	periodics [periodiccnt - 1] = w;	1221	periodics [periodiccnt - 1] = w;
994	upheap ((WT *)periodics, periodiccnt - 1);	1222	upheap ((WT *)periodics, periodiccnt - 1);
995	}
996		1223
		1224	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1225	}
		1226
997	void	1227	void
998	ev_periodic_stop (struct ev_periodic *w)	1228	ev_periodic_stop (EV_P_ struct ev_periodic *w)
999	{	1229	{
1000	ev_clear_pending ((W)w);	1230	ev_clear_pending (EV_A_ (W)w);
1001	if (!ev_is_active (w))	1231	if (!ev_is_active (w))
1002	return;	1232	return;
1003		1233
		1234	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1235
1004	if (w->active < periodiccnt--)	1236	if (((W)w)->active < periodiccnt--)
1005	{	1237	{
1006	periodics [w->active - 1] = periodics [periodiccnt];	1238	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1007	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1239	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1008	}	1240	}
1009		1241
1010	ev_stop ((W)w);	1242	ev_stop (EV_A_ (W)w);
1011	}	1243	}
1012		1244
1013	void	1245	void
1014	ev_signal_start (struct ev_signal *w)	1246	ev_idle_start (EV_P_ struct ev_idle *w)
1015	{	1247	{
1016	if (ev_is_active (w))	1248	if (ev_is_active (w))
1017	return;	1249	return;
1018		1250
		1251	ev_start (EV_A_ (W)w, ++idlecnt);
		1252	array_needsize (idles, idlemax, idlecnt, );
		1253	idles [idlecnt - 1] = w;
		1254	}
		1255
		1256	void
		1257	ev_idle_stop (EV_P_ struct ev_idle *w)
		1258	{
		1259	ev_clear_pending (EV_A_ (W)w);
		1260	if (ev_is_active (w))
		1261	return;
		1262
		1263	idles [((W)w)->active - 1] = idles [--idlecnt];
		1264	ev_stop (EV_A_ (W)w);
		1265	}
		1266
		1267	void
		1268	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1269	{
		1270	if (ev_is_active (w))
		1271	return;
		1272
		1273	ev_start (EV_A_ (W)w, ++preparecnt);
		1274	array_needsize (prepares, preparemax, preparecnt, );
		1275	prepares [preparecnt - 1] = w;
		1276	}
		1277
		1278	void
		1279	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1280	{
		1281	ev_clear_pending (EV_A_ (W)w);
		1282	if (ev_is_active (w))
		1283	return;
		1284
		1285	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1286	ev_stop (EV_A_ (W)w);
		1287	}
		1288
		1289	void
		1290	ev_check_start (EV_P_ struct ev_check *w)
		1291	{
		1292	if (ev_is_active (w))
		1293	return;
		1294
		1295	ev_start (EV_A_ (W)w, ++checkcnt);
		1296	array_needsize (checks, checkmax, checkcnt, );
		1297	checks [checkcnt - 1] = w;
		1298	}
		1299
		1300	void
		1301	ev_check_stop (EV_P_ struct ev_check *w)
		1302	{
		1303	ev_clear_pending (EV_A_ (W)w);
		1304	if (ev_is_active (w))
		1305	return;
		1306
		1307	checks [((W)w)->active - 1] = checks [--checkcnt];
		1308	ev_stop (EV_A_ (W)w);
		1309	}
		1310
		1311	#ifndef SA_RESTART
		1312	# define SA_RESTART 0
		1313	#endif
		1314
		1315	void
		1316	ev_signal_start (EV_P_ struct ev_signal *w)
		1317	{
		1318	#if EV_MULTIPLICITY
		1319	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1320	#endif
		1321	if (ev_is_active (w))
		1322	return;
		1323
1019	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1324	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1020		1325
1021	ev_start ((W)w, 1);	1326	ev_start (EV_A_ (W)w, 1);
1022	array_needsize (signals, signalmax, w->signum, signals_init);	1327	array_needsize (signals, signalmax, w->signum, signals_init);
1023	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1328	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1024		1329
1025	if (!w->next)	1330	if (!((WL)w)->next)
1026	{	1331	{
		1332	#if WIN32
		1333	signal (w->signum, sighandler);
		1334	#else
1027	struct sigaction sa;	1335	struct sigaction sa;
1028	sa.sa_handler = sighandler;	1336	sa.sa_handler = sighandler;
1029	sigfillset (&sa.sa_mask);	1337	sigfillset (&sa.sa_mask);
1030	sa.sa_flags = 0;	1338	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1031	sigaction (w->signum, &sa, 0);	1339	sigaction (w->signum, &sa, 0);
		1340	#endif
1032	}	1341	}
1033	}	1342	}
1034		1343
1035	void	1344	void
1036	ev_signal_stop (struct ev_signal *w)	1345	ev_signal_stop (EV_P_ struct ev_signal *w)
1037	{	1346	{
1038	ev_clear_pending ((W)w);	1347	ev_clear_pending (EV_A_ (W)w);
1039	if (!ev_is_active (w))	1348	if (!ev_is_active (w))
1040	return;	1349	return;
1041		1350
1042	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1351	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1043	ev_stop ((W)w);	1352	ev_stop (EV_A_ (W)w);
1044		1353
1045	if (!signals [w->signum - 1].head)	1354	if (!signals [w->signum - 1].head)
1046	signal (w->signum, SIG_DFL);	1355	signal (w->signum, SIG_DFL);
1047	}	1356	}
1048		1357
1049	void	1358	void
1050	ev_idle_start (struct ev_idle *w)	1359	ev_child_start (EV_P_ struct ev_child *w)
1051	{	1360	{
		1361	#if EV_MULTIPLICITY
		1362	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1363	#endif
1052	if (ev_is_active (w))	1364	if (ev_is_active (w))
1053	return;	1365	return;
1054		1366
1055	ev_start ((W)w, ++idlecnt);	1367	ev_start (EV_A_ (W)w, 1);
1056	array_needsize (idles, idlemax, idlecnt, );	1368	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1057	idles [idlecnt - 1] = w;
1058	}	1369	}
1059		1370
1060	void	1371	void
1061	ev_idle_stop (struct ev_idle *w)	1372	ev_child_stop (EV_P_ struct ev_child *w)
1062	{	1373	{
1063	ev_clear_pending ((W)w);	1374	ev_clear_pending (EV_A_ (W)w);
1064	if (ev_is_active (w))	1375	if (ev_is_active (w))
1065	return;	1376	return;
1066		1377
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);	1378	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1133	ev_stop ((W)w);	1379	ev_stop (EV_A_ (W)w);
1134	}	1380	}
1135		1381
1136	/*****************************************************************************/	1382	/*****************************************************************************/
1137		1383
1138	struct ev_once	1384	struct ev_once
…		…
1142	void (*cb)(int revents, void *arg);	1388	void (*cb)(int revents, void *arg);
1143	void *arg;	1389	void *arg;
1144	};	1390	};
1145		1391
1146	static void	1392	static void
1147	once_cb (struct ev_once *once, int revents)	1393	once_cb (EV_P_ struct ev_once *once, int revents)
1148	{	1394	{
1149	void (*cb)(int revents, void *arg) = once->cb;	1395	void (*cb)(int revents, void *arg) = once->cb;
1150	void *arg = once->arg;	1396	void *arg = once->arg;
1151		1397
1152	ev_io_stop (&once->io);	1398	ev_io_stop (EV_A_ &once->io);
1153	ev_timer_stop (&once->to);	1399	ev_timer_stop (EV_A_ &once->to);
1154	free (once);	1400	free (once);
1155		1401
1156	cb (revents, arg);	1402	cb (revents, arg);
1157	}	1403	}
1158		1404
1159	static void	1405	static void
1160	once_cb_io (struct ev_io *w, int revents)	1406	once_cb_io (EV_P_ struct ev_io *w, int revents)
1161	{	1407	{
1162	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1408	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1163	}	1409	}
1164		1410
1165	static void	1411	static void
1166	once_cb_to (struct ev_timer *w, int revents)	1412	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1167	{	1413	{
1168	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1414	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1169	}	1415	}
1170		1416
1171	void	1417	void
1172	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1418	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1173	{	1419	{
1174	struct ev_once *once = malloc (sizeof (struct ev_once));	1420	struct ev_once *once = malloc (sizeof (struct ev_once));
1175		1421
1176	if (!once)	1422	if (!once)
1177	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1423	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
…		…
1182		1428
1183	ev_watcher_init (&once->io, once_cb_io);	1429	ev_watcher_init (&once->io, once_cb_io);
1184	if (fd >= 0)	1430	if (fd >= 0)
1185	{	1431	{
1186	ev_io_set (&once->io, fd, events);	1432	ev_io_set (&once->io, fd, events);
1187	ev_io_start (&once->io);	1433	ev_io_start (EV_A_ &once->io);
1188	}	1434	}
1189		1435
1190	ev_watcher_init (&once->to, once_cb_to);	1436	ev_watcher_init (&once->to, once_cb_to);
1191	if (timeout >= 0.)	1437	if (timeout >= 0.)
1192	{	1438	{
1193	ev_timer_set (&once->to, timeout, 0.);	1439	ev_timer_set (&once->to, timeout, 0.);
1194	ev_timer_start (&once->to);	1440	ev_timer_start (EV_A_ &once->to);
1195	}	1441	}
1196	}	1442	}
1197	}	1443	}
1198		1444
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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