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Comparing libev/ev.c (file contents):
Revision 1.48 by root, Sat Nov 3 12:19:31 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	{
418	int old_errno = errno;	482	int old_errno = errno;
…		…
421	errno = old_errno;	485	errno = old_errno;
422	}	486	}
423	}	487	}
424		488
425	static void	489	static void
426	sigcb (struct ev_io *iow, int revents)	490	sigcb (EV_P_ struct ev_io *iow, int revents)
427	{	491	{
428	struct ev_signal *w;	492	WL w;
429	int signum;	493	int signum;
430		494
431	read (sigpipe [0], &revents, 1);	495	read (sigpipe [0], &revents, 1);
432	gotsig = 0;	496	gotsig = 0;
433		497
…		…
435	if (signals [signum].gotsig)	499	if (signals [signum].gotsig)
436	{	500	{
437	signals [signum].gotsig = 0;	501	signals [signum].gotsig = 0;
438		502
439	for (w = signals [signum].head; w; w = w->next)	503	for (w = signals [signum].head; w; w = w->next)
440	event ((W)w, EV_SIGNAL);	504	event (EV_A_ (W)w, EV_SIGNAL);
441	}	505	}
442	}	506	}
443		507
444	static void	508	static void
445	siginit (void)	509	siginit (EV_P)
446	{	510	{
447	#ifndef WIN32	511	#ifndef WIN32
448	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	512	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
449	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	513	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
450		514
…		…
452	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	516	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
453	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	517	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
454	#endif	518	#endif
455		519
456	ev_io_set (&sigev, sigpipe [0], EV_READ);	520	ev_io_set (&sigev, sigpipe [0], EV_READ);
457	ev_io_start (&sigev);	521	ev_io_start (EV_A_ &sigev);
		522	ev_unref (EV_A); /* child watcher should not keep loop alive */
458	}	523	}
459		524
460	/*****************************************************************************/	525	/*****************************************************************************/
461		526
462	static struct ev_idle **idles;	527	#ifndef WIN32
463	static int idlemax, idlecnt;
464
465	static struct ev_prepare **prepares;
466	static int preparemax, preparecnt;
467
468	static struct ev_check **checks;
469	static int checkmax, checkcnt;
470
471	/*****************************************************************************/
472		528
473	static struct ev_child *childs [PID_HASHSIZE];	529	static struct ev_child *childs [PID_HASHSIZE];
474	static struct ev_signal childev;	530	static struct ev_signal childev;
475		531
476	#ifndef WIN32
477
478	#ifndef WCONTINUED	532	#ifndef WCONTINUED
479	# define WCONTINUED 0	533	# define WCONTINUED 0
480	#endif	534	#endif
481		535
482	static void	536	static void
483	child_reap (struct ev_signal *sw, int chain, int pid, int status)	537	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
484	{	538	{
485	struct ev_child *w;	539	struct ev_child *w;
486		540
487	for (w = childs [chain & (PID_HASHSIZE - 1)]; w; w = w->next)	541	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
488	if (w->pid == pid || !w->pid)	542	if (w->pid == pid || !w->pid)
489	{	543	{
490	w->priority = sw->priority; /* need to do it *now* */	544	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
491	w->rpid = pid;	545	w->rpid = pid;
492	w->rstatus = status;	546	w->rstatus = status;
493	printf ("rpid %p %d %d\n", w, pid, w->pid);//D
494	event ((W)w, EV_CHILD);	547	event (EV_A_ (W)w, EV_CHILD);
495	}	548	}
496	}	549	}
497		550
498	static void	551	static void
499	childcb (struct ev_signal *sw, int revents)	552	childcb (EV_P_ struct ev_signal *sw, int revents)
500	{	553	{
501	int pid, status;	554	int pid, status;
502		555
503	printf ("chld %x\n", revents);//D
504	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	556	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
505	{	557	{
506	/* make sure we are called again until all childs have been reaped */	558	/* make sure we are called again until all childs have been reaped */
507	event ((W)sw, EV_SIGNAL);	559	event (EV_A_ (W)sw, EV_SIGNAL);
508		560
509	child_reap (sw, pid, pid, status);	561	child_reap (EV_A_ sw, pid, pid, status);
510	child_reap (sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	562	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
511	}	563	}
512	}	564	}
513		565
514	#endif	566	#endif
515		567
…		…
538	ev_version_minor (void)	590	ev_version_minor (void)
539	{	591	{
540	return EV_VERSION_MINOR;	592	return EV_VERSION_MINOR;
541	}	593	}
542		594
543	/* 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 */
544	static int	596	static int
545	enable_secure ()	597	enable_secure (void)
546	{	598	{
		599	#ifdef WIN32
		600	return 0;
		601	#else
547	return getuid () != geteuid ()	602	return getuid () != geteuid ()
548	|| getgid () != getegid ();	603	|| getgid () != getegid ();
		604	#endif
549	}	605	}
550		606
551	int ev_init (int methods)	607	int
		608	ev_method (EV_P)
552	{	609	{
		610	return method;
		611	}
		612
		613	static void
		614	loop_init (EV_P_ int methods)
		615	{
553	if (!ev_method)	616	if (!method)
554	{	617	{
555	#if EV_USE_MONOTONIC	618	#if EV_USE_MONOTONIC
556	{	619	{
557	struct timespec ts;	620	struct timespec ts;
558	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	621	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
559	have_monotonic = 1;	622	have_monotonic = 1;
560	}	623	}
561	#endif	624	#endif
562		625
563	ev_now = ev_time ();	626	rt_now = ev_time ();
564	now = get_clock ();	627	mn_now = get_clock ();
565	now_floor = now;	628	now_floor = mn_now;
566	diff = ev_now - now;	629	rtmn_diff = rt_now - mn_now;
567
568	if (pipe (sigpipe))
569	return 0;
570		630
571	if (methods == EVMETHOD_AUTO)	631	if (methods == EVMETHOD_AUTO)
572	if (!enable_secure () && getenv ("LIBEV_METHODS"))	632	if (!enable_secure () && getenv ("LIBEV_METHODS"))
573	methods = atoi (getenv ("LIBEV_METHODS"));	633	methods = atoi (getenv ("LIBEV_METHODS"));
574	else	634	else
575	methods = EVMETHOD_ANY;	635	methods = EVMETHOD_ANY;
576		636
577	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
578	#if EV_USE_KQUEUE	641	#if EV_USE_KQUEUE
579	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	642	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
580	#endif	643	#endif
581	#if EV_USE_EPOLL	644	#if EV_USE_EPOLL
582	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	645	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
583	#endif	646	#endif
584	#if EV_USE_POLL	647	#if EV_USE_POLL
585	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	648	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
586	#endif	649	#endif
587	#if EV_USE_SELECT	650	#if EV_USE_SELECT
588	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	651	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
589	#endif	652	#endif
		653	}
		654	}
590		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
591	if (ev_method)	758	if (ev_method (EV_A))
592	{	759	{
593	ev_watcher_init (&sigev, sigcb);	760	ev_watcher_init (&sigev, sigcb);
594	ev_set_priority (&sigev, EV_MAXPRI);	761	ev_set_priority (&sigev, EV_MAXPRI);
595	siginit ();	762	siginit (EV_A);
596		763
597	#ifndef WIN32	764	#ifndef WIN32
598	ev_signal_init (&childev, childcb, SIGCHLD);	765	ev_signal_init (&childev, childcb, SIGCHLD);
599	ev_set_priority (&childev, EV_MAXPRI);	766	ev_set_priority (&childev, EV_MAXPRI);
600	ev_signal_start (&childev);	767	ev_signal_start (EV_A_ &childev);
		768	ev_unref (EV_A); /* child watcher should not keep loop alive */
601	#endif	769	#endif
602	}	770	}
		771	else
		772	default_loop = 0;
603	}	773	}
604		774
605	return ev_method;	775	return default_loop;
606	}	776	}
607		777
608	/*****************************************************************************/
609
610	void	778	void
611	ev_fork_prepare (void)	779	ev_default_destroy (void)
612	{	780	{
613	/* nop */	781	#if EV_MULTIPLICITY
614	}	782	struct ev_loop *loop = default_loop;
615
616	void
617	ev_fork_parent (void)
618	{
619	/* nop */
620	}
621
622	void
623	ev_fork_child (void)
624	{
625	#if EV_USE_EPOLL
626	if (ev_method == EVMETHOD_EPOLL)
627	epoll_postfork_child ();
628	#endif	783	#endif
629		784
		785	ev_ref (EV_A); /* child watcher */
		786	ev_signal_stop (EV_A_ &childev);
		787
		788	ev_ref (EV_A); /* signal watcher */
630	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);
631	close (sigpipe [0]);	807	close (sigpipe [0]);
632	close (sigpipe [1]);	808	close (sigpipe [1]);
633	pipe (sigpipe);	809	pipe (sigpipe);
		810
		811	ev_ref (EV_A); /* signal watcher */
634	siginit ();	812	siginit (EV_A);
635	}	813	}
636		814
637	/*****************************************************************************/	815	/*****************************************************************************/
638		816
639	static void	817	static void
640	call_pending (void)	818	call_pending (EV_P)
641	{	819	{
642	int pri;	820	int pri;
643		821
644	for (pri = NUMPRI; pri--; )	822	for (pri = NUMPRI; pri--; )
645	while (pendingcnt [pri])	823	while (pendingcnt [pri])
…		…
647	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	825	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
648		826
649	if (p->w)	827	if (p->w)
650	{	828	{
651	p->w->pending = 0;	829	p->w->pending = 0;
652	p->w->cb (p->w, p->events);	830	p->w->cb (EV_A_ p->w, p->events);
653	}	831	}
654	}	832	}
655	}	833	}
656		834
657	static void	835	static void
658	timers_reify (void)	836	timers_reify (EV_P)
659	{	837	{
660	while (timercnt && timers [0]->at <= now)	838	while (timercnt && ((WT)timers [0])->at <= mn_now)
661	{	839	{
662	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)));
663		843
664	/* first reschedule or stop timer */	844	/* first reschedule or stop timer */
665	if (w->repeat)	845	if (w->repeat)
666	{	846	{
667	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.));
668	w->at = now + w->repeat;	848	((WT)w)->at = mn_now + w->repeat;
669	downheap ((WT *)timers, timercnt, 0);	849	downheap ((WT *)timers, timercnt, 0);
670	}	850	}
671	else	851	else
672	ev_timer_stop (w); /* nonrepeating: stop timer */	852	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
673		853
674	event ((W)w, EV_TIMEOUT);	854	event (EV_A_ (W)w, EV_TIMEOUT);
675	}	855	}
676	}	856	}
677		857
678	static void	858	static void
679	periodics_reify (void)	859	periodics_reify (EV_P)
680	{	860	{
681	while (periodiccnt && periodics [0]->at <= ev_now)	861	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
682	{	862	{
683	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)));
684		866
685	/* first reschedule or stop timer */	867	/* first reschedule or stop timer */
686	if (w->interval)	868	if (w->interval)
687	{	869	{
688	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;
689	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));
690	downheap ((WT *)periodics, periodiccnt, 0);	872	downheap ((WT *)periodics, periodiccnt, 0);
691	}	873	}
692	else	874	else
693	ev_periodic_stop (w); /* nonrepeating: stop timer */	875	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
694		876
695	event ((W)w, EV_PERIODIC);	877	event (EV_A_ (W)w, EV_PERIODIC);
696	}	878	}
697	}	879	}
698		880
699	static void	881	static void
700	periodics_reschedule (ev_tstamp diff)	882	periodics_reschedule (EV_P)
701	{	883	{
702	int i;	884	int i;
703		885
704	/* adjust periodics after time jump */	886	/* adjust periodics after time jump */
705	for (i = 0; i < periodiccnt; ++i)	887	for (i = 0; i < periodiccnt; ++i)
706	{	888	{
707	struct ev_periodic *w = periodics [i];	889	struct ev_periodic *w = periodics [i];
708		890
709	if (w->interval)	891	if (w->interval)
710	{	892	{
711	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;
712		894
713	if (fabs (diff) >= 1e-4)	895	if (fabs (diff) >= 1e-4)
714	{	896	{
715	ev_periodic_stop (w);	897	ev_periodic_stop (EV_A_ w);
716	ev_periodic_start (w);	898	ev_periodic_start (EV_A_ w);
717		899
718	i = 0; /* restart loop, inefficient, but time jumps should be rare */	900	i = 0; /* restart loop, inefficient, but time jumps should be rare */
719	}	901	}
720	}	902	}
721	}	903	}
722	}	904	}
723		905
724	static int	906	inline int
725	time_update_monotonic (void)	907	time_update_monotonic (EV_P)
726	{	908	{
727	now = get_clock ();	909	mn_now = get_clock ();
728		910
729	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	911	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
730	{	912	{
731	ev_now = now + diff;	913	rt_now = rtmn_diff + mn_now;
732	return 0;	914	return 0;
733	}	915	}
734	else	916	else
735	{	917	{
736	now_floor = now;	918	now_floor = mn_now;
737	ev_now = ev_time ();	919	rt_now = ev_time ();
738	return 1;	920	return 1;
739	}	921	}
740	}	922	}
741		923
742	static void	924	static void
743	time_update (void)	925	time_update (EV_P)
744	{	926	{
745	int i;	927	int i;
746		928
747	#if EV_USE_MONOTONIC	929	#if EV_USE_MONOTONIC
748	if (expect_true (have_monotonic))	930	if (expect_true (have_monotonic))
749	{	931	{
750	if (time_update_monotonic ())	932	if (time_update_monotonic (EV_A))
751	{	933	{
752	ev_tstamp odiff = diff;	934	ev_tstamp odiff = rtmn_diff;
753		935
754	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 */
755	{	937	{
756	diff = ev_now - now;	938	rtmn_diff = rt_now - mn_now;
757		939
758	if (fabs (odiff - diff) < MIN_TIMEJUMP)	940	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
759	return; /* all is well */	941	return; /* all is well */
760		942
761	ev_now = ev_time ();	943	rt_now = ev_time ();
762	now = get_clock ();	944	mn_now = get_clock ();
763	now_floor = now;	945	now_floor = mn_now;
764	}	946	}
765		947
766	periodics_reschedule (diff - odiff);	948	periodics_reschedule (EV_A);
767	/* 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) */
768	}	951	}
769	}	952	}
770	else	953	else
771	#endif	954	#endif
772	{	955	{
773	ev_now = ev_time ();	956	rt_now = ev_time ();
774		957
775	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))
776	{	959	{
777	periodics_reschedule (ev_now - now);	960	periodics_reschedule (EV_A);
778		961
779	/* 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 */
780	for (i = 0; i < timercnt; ++i)	963	for (i = 0; i < timercnt; ++i)
781	timers [i]->at += diff;	964	((WT)timers [i])->at += rt_now - mn_now;
782	}	965	}
783		966
784	now = ev_now;	967	mn_now = rt_now;
785	}	968	}
786	}	969	}
787		970
788	int ev_loop_done;	971	void
		972	ev_ref (EV_P)
		973	{
		974	++activecnt;
		975	}
789		976
		977	void
		978	ev_unref (EV_P)
		979	{
		980	--activecnt;
		981	}
		982
		983	static int loop_done;
		984
		985	void
790	void ev_loop (int flags)	986	ev_loop (EV_P_ int flags)
791	{	987	{
792	double block;	988	double block;
793	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	989	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
794		990
795	do	991	do
796	{	992	{
797	/* queue check watchers (and execute them) */	993	/* queue check watchers (and execute them) */
798	if (expect_false (preparecnt))	994	if (expect_false (preparecnt))
799	{	995	{
800	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	996	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
801	call_pending ();	997	call_pending (EV_A);
802	}	998	}
803		999
804	/* update fd-related kernel structures */	1000	/* update fd-related kernel structures */
805	fd_reify ();	1001	fd_reify (EV_A);
806		1002
807	/* calculate blocking time */	1003	/* calculate blocking time */
808		1004
809	/* 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
810	always have timers, we just calculate it always */	1006	always have timers, we just calculate it always */
811	#if EV_USE_MONOTONIC	1007	#if EV_USE_MONOTONIC
812	if (expect_true (have_monotonic))	1008	if (expect_true (have_monotonic))
813	time_update_monotonic ();	1009	time_update_monotonic (EV_A);
814	else	1010	else
815	#endif	1011	#endif
816	{	1012	{
817	ev_now = ev_time ();	1013	rt_now = ev_time ();
818	now = ev_now;	1014	mn_now = rt_now;
819	}	1015	}
820		1016
821	if (flags & EVLOOP_NONBLOCK || idlecnt)	1017	if (flags & EVLOOP_NONBLOCK || idlecnt)
822	block = 0.;	1018	block = 0.;
823	else	1019	else
824	{	1020	{
825	block = MAX_BLOCKTIME;	1021	block = MAX_BLOCKTIME;
826		1022
827	if (timercnt)	1023	if (timercnt)
828	{	1024	{
829	ev_tstamp to = timers [0]->at - now + method_fudge;	1025	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
830	if (block > to) block = to;	1026	if (block > to) block = to;
831	}	1027	}
832		1028
833	if (periodiccnt)	1029	if (periodiccnt)
834	{	1030	{
835	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1031	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
836	if (block > to) block = to;	1032	if (block > to) block = to;
837	}	1033	}
838		1034
839	if (block < 0.) block = 0.;	1035	if (block < 0.) block = 0.;
840	}	1036	}
841		1037
842	method_poll (block);	1038	method_poll (EV_A_ block);
843		1039
844	/* update ev_now, do magic */	1040	/* update rt_now, do magic */
845	time_update ();	1041	time_update (EV_A);
846		1042
847	/* queue pending timers and reschedule them */	1043	/* queue pending timers and reschedule them */
848	timers_reify (); /* relative timers called last */	1044	timers_reify (EV_A); /* relative timers called last */
849	periodics_reify (); /* absolute timers called first */	1045	periodics_reify (EV_A); /* absolute timers called first */
850		1046
851	/* queue idle watchers unless io or timers are pending */	1047	/* queue idle watchers unless io or timers are pending */
852	if (!pendingcnt)	1048	if (!pendingcnt)
853	queue_events ((W *)idles, idlecnt, EV_IDLE);	1049	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
854		1050
855	/* queue check watchers, to be executed first */	1051	/* queue check watchers, to be executed first */
856	if (checkcnt)	1052	if (checkcnt)
857	queue_events ((W *)checks, checkcnt, EV_CHECK);	1053	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
858		1054
859	call_pending ();	1055	call_pending (EV_A);
860	}	1056	}
861	while (!ev_loop_done);	1057	while (activecnt && !loop_done);
862		1058
863	if (ev_loop_done != 2)	1059	if (loop_done != 2)
864	ev_loop_done = 0;	1060	loop_done = 0;
		1061	}
		1062
		1063	void
		1064	ev_unloop (EV_P_ int how)
		1065	{
		1066	loop_done = how;
865	}	1067	}
866		1068
867	/*****************************************************************************/	1069	/*****************************************************************************/
868		1070
869	static void	1071	inline void
870	wlist_add (WL *head, WL elem)	1072	wlist_add (WL *head, WL elem)
871	{	1073	{
872	elem->next = *head;	1074	elem->next = *head;
873	*head = elem;	1075	*head = elem;
874	}	1076	}
875		1077
876	static void	1078	inline void
877	wlist_del (WL *head, WL elem)	1079	wlist_del (WL *head, WL elem)
878	{	1080	{
879	while (*head)	1081	while (*head)
880	{	1082	{
881	if (*head == elem)	1083	if (*head == elem)
…		…
886		1088
887	head = &(*head)->next;	1089	head = &(*head)->next;
888	}	1090	}
889	}	1091	}
890		1092
891	static void	1093	inline void
892	ev_clear_pending (W w)	1094	ev_clear_pending (EV_P_ W w)
893	{	1095	{
894	if (w->pending)	1096	if (w->pending)
895	{	1097	{
896	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1098	pendings [ABSPRI (w)][w->pending - 1].w = 0;
897	w->pending = 0;	1099	w->pending = 0;
898	}	1100	}
899	}	1101	}
900		1102
901	static void	1103	inline void
902	ev_start (W w, int active)	1104	ev_start (EV_P_ W w, int active)
903	{	1105	{
904	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1106	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
905	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1107	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
906		1108
907	w->active = active;	1109	w->active = active;
		1110	ev_ref (EV_A);
908	}	1111	}
909		1112
910	static void	1113	inline void
911	ev_stop (W w)	1114	ev_stop (EV_P_ W w)
912	{	1115	{
		1116	ev_unref (EV_A);
913	w->active = 0;	1117	w->active = 0;
914	}	1118	}
915		1119
916	/*****************************************************************************/	1120	/*****************************************************************************/
917		1121
918	void	1122	void
919	ev_io_start (struct ev_io *w)	1123	ev_io_start (EV_P_ struct ev_io *w)
920	{	1124	{
921	int fd = w->fd;	1125	int fd = w->fd;
922		1126
923	if (ev_is_active (w))	1127	if (ev_is_active (w))
924	return;	1128	return;
925		1129
926	assert (("ev_io_start called with negative fd", fd >= 0));	1130	assert (("ev_io_start called with negative fd", fd >= 0));
927		1131
928	ev_start ((W)w, 1);	1132	ev_start (EV_A_ (W)w, 1);
929	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1133	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
930	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1134	wlist_add ((WL *)&anfds[fd].head, (WL)w);
931		1135
932	fd_change (fd);	1136	fd_change (EV_A_ fd);
933	}	1137	}
934		1138
935	void	1139	void
936	ev_io_stop (struct ev_io *w)	1140	ev_io_stop (EV_P_ struct ev_io *w)
937	{	1141	{
938	ev_clear_pending ((W)w);	1142	ev_clear_pending (EV_A_ (W)w);
939	if (!ev_is_active (w))	1143	if (!ev_is_active (w))
940	return;	1144	return;
941		1145
942	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1146	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
943	ev_stop ((W)w);	1147	ev_stop (EV_A_ (W)w);
944		1148
945	fd_change (w->fd);	1149	fd_change (EV_A_ w->fd);
946	}	1150	}
947		1151
948	void	1152	void
949	ev_timer_start (struct ev_timer *w)	1153	ev_timer_start (EV_P_ struct ev_timer *w)
950	{	1154	{
951	if (ev_is_active (w))	1155	if (ev_is_active (w))
952	return;	1156	return;
953		1157
954	w->at += now;	1158	((WT)w)->at += mn_now;
955		1159
956	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.));
957		1161
958	ev_start ((W)w, ++timercnt);	1162	ev_start (EV_A_ (W)w, ++timercnt);
959	array_needsize (timers, timermax, timercnt, );	1163	array_needsize (timers, timermax, timercnt, );
960	timers [timercnt - 1] = w;	1164	timers [timercnt - 1] = w;
961	upheap ((WT *)timers, timercnt - 1);	1165	upheap ((WT *)timers, timercnt - 1);
962	}
963		1166
		1167	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1168	}
		1169
964	void	1170	void
965	ev_timer_stop (struct ev_timer *w)	1171	ev_timer_stop (EV_P_ struct ev_timer *w)
966	{	1172	{
967	ev_clear_pending ((W)w);	1173	ev_clear_pending (EV_A_ (W)w);
968	if (!ev_is_active (w))	1174	if (!ev_is_active (w))
969	return;	1175	return;
970		1176
		1177	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1178
971	if (w->active < timercnt--)	1179	if (((W)w)->active < timercnt--)
972	{	1180	{
973	timers [w->active - 1] = timers [timercnt];	1181	timers [((W)w)->active - 1] = timers [timercnt];
974	downheap ((WT *)timers, timercnt, w->active - 1);	1182	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
975	}	1183	}
976		1184
977	w->at = w->repeat;	1185	((WT)w)->at = w->repeat;
978		1186
979	ev_stop ((W)w);	1187	ev_stop (EV_A_ (W)w);
980	}	1188	}
981		1189
982	void	1190	void
983	ev_timer_again (struct ev_timer *w)	1191	ev_timer_again (EV_P_ struct ev_timer *w)
984	{	1192	{
985	if (ev_is_active (w))	1193	if (ev_is_active (w))
986	{	1194	{
987	if (w->repeat)	1195	if (w->repeat)
988	{	1196	{
989	w->at = now + w->repeat;	1197	((WT)w)->at = mn_now + w->repeat;
990	downheap ((WT *)timers, timercnt, w->active - 1);	1198	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
991	}	1199	}
992	else	1200	else
993	ev_timer_stop (w);	1201	ev_timer_stop (EV_A_ w);
994	}	1202	}
995	else if (w->repeat)	1203	else if (w->repeat)
996	ev_timer_start (w);	1204	ev_timer_start (EV_A_ w);
997	}	1205	}
998		1206
999	void	1207	void
1000	ev_periodic_start (struct ev_periodic *w)	1208	ev_periodic_start (EV_P_ struct ev_periodic *w)
1001	{	1209	{
1002	if (ev_is_active (w))	1210	if (ev_is_active (w))
1003	return;	1211	return;
1004		1212
1005	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.));
1006		1214
1007	/* 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 */
1008	if (w->interval)	1216	if (w->interval)
1009	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;
1010		1218
1011	ev_start ((W)w, ++periodiccnt);	1219	ev_start (EV_A_ (W)w, ++periodiccnt);
1012	array_needsize (periodics, periodicmax, periodiccnt, );	1220	array_needsize (periodics, periodicmax, periodiccnt, );
1013	periodics [periodiccnt - 1] = w;	1221	periodics [periodiccnt - 1] = w;
1014	upheap ((WT *)periodics, periodiccnt - 1);	1222	upheap ((WT *)periodics, periodiccnt - 1);
1015	}
1016		1223
		1224	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1225	}
		1226
1017	void	1227	void
1018	ev_periodic_stop (struct ev_periodic *w)	1228	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1019	{	1229	{
1020	ev_clear_pending ((W)w);	1230	ev_clear_pending (EV_A_ (W)w);
1021	if (!ev_is_active (w))	1231	if (!ev_is_active (w))
1022	return;	1232	return;
1023		1233
		1234	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1235
1024	if (w->active < periodiccnt--)	1236	if (((W)w)->active < periodiccnt--)
1025	{	1237	{
1026	periodics [w->active - 1] = periodics [periodiccnt];	1238	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1027	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1239	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1028	}	1240	}
1029		1241
1030	ev_stop ((W)w);	1242	ev_stop (EV_A_ (W)w);
		1243	}
		1244
		1245	void
		1246	ev_idle_start (EV_P_ struct ev_idle *w)
		1247	{
		1248	if (ev_is_active (w))
		1249	return;
		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);
1031	}	1309	}
1032		1310
1033	#ifndef SA_RESTART	1311	#ifndef SA_RESTART
1034	# define SA_RESTART 0	1312	# define SA_RESTART 0
1035	#endif	1313	#endif
1036		1314
1037	void	1315	void
1038	ev_signal_start (struct ev_signal *w)	1316	ev_signal_start (EV_P_ struct ev_signal *w)
1039	{	1317	{
		1318	#if EV_MULTIPLICITY
		1319	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1320	#endif
1040	if (ev_is_active (w))	1321	if (ev_is_active (w))
1041	return;	1322	return;
1042		1323
1043	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));
1044		1325
1045	ev_start ((W)w, 1);	1326	ev_start (EV_A_ (W)w, 1);
1046	array_needsize (signals, signalmax, w->signum, signals_init);	1327	array_needsize (signals, signalmax, w->signum, signals_init);
1047	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1328	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1048		1329
1049	if (!w->next)	1330	if (!((WL)w)->next)
1050	{	1331	{
		1332	#if WIN32
		1333	signal (w->signum, sighandler);
		1334	#else
1051	struct sigaction sa;	1335	struct sigaction sa;
1052	sa.sa_handler = sighandler;	1336	sa.sa_handler = sighandler;
1053	sigfillset (&sa.sa_mask);	1337	sigfillset (&sa.sa_mask);
1054	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1338	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1055	sigaction (w->signum, &sa, 0);	1339	sigaction (w->signum, &sa, 0);
		1340	#endif
1056	}	1341	}
1057	}	1342	}
1058		1343
1059	void	1344	void
1060	ev_signal_stop (struct ev_signal *w)	1345	ev_signal_stop (EV_P_ struct ev_signal *w)
1061	{	1346	{
1062	ev_clear_pending ((W)w);	1347	ev_clear_pending (EV_A_ (W)w);
1063	if (!ev_is_active (w))	1348	if (!ev_is_active (w))
1064	return;	1349	return;
1065		1350
1066	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1351	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1067	ev_stop ((W)w);	1352	ev_stop (EV_A_ (W)w);
1068		1353
1069	if (!signals [w->signum - 1].head)	1354	if (!signals [w->signum - 1].head)
1070	signal (w->signum, SIG_DFL);	1355	signal (w->signum, SIG_DFL);
1071	}	1356	}
1072		1357
1073	void	1358	void
1074	ev_idle_start (struct ev_idle *w)	1359	ev_child_start (EV_P_ struct ev_child *w)
1075	{	1360	{
		1361	#if EV_MULTIPLICITY
		1362	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1363	#endif
1076	if (ev_is_active (w))	1364	if (ev_is_active (w))
1077	return;	1365	return;
1078		1366
1079	ev_start ((W)w, ++idlecnt);	1367	ev_start (EV_A_ (W)w, 1);
1080	array_needsize (idles, idlemax, idlecnt, );	1368	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1081	idles [idlecnt - 1] = w;
1082	}	1369	}
1083		1370
1084	void	1371	void
1085	ev_idle_stop (struct ev_idle *w)	1372	ev_child_stop (EV_P_ struct ev_child *w)
1086	{	1373	{
1087	ev_clear_pending ((W)w);	1374	ev_clear_pending (EV_A_ (W)w);
1088	if (ev_is_active (w))	1375	if (ev_is_active (w))
1089	return;	1376	return;
1090		1377
1091	idles [w->active - 1] = idles [--idlecnt];
1092	ev_stop ((W)w);
1093	}
1094
1095	void
1096	ev_prepare_start (struct ev_prepare *w)
1097	{
1098	if (ev_is_active (w))
1099	return;
1100
1101	ev_start ((W)w, ++preparecnt);
1102	array_needsize (prepares, preparemax, preparecnt, );
1103	prepares [preparecnt - 1] = w;
1104	}
1105
1106	void
1107	ev_prepare_stop (struct ev_prepare *w)
1108	{
1109	ev_clear_pending ((W)w);
1110	if (ev_is_active (w))
1111	return;
1112
1113	prepares [w->active - 1] = prepares [--preparecnt];
1114	ev_stop ((W)w);
1115	}
1116
1117	void
1118	ev_check_start (struct ev_check *w)
1119	{
1120	if (ev_is_active (w))
1121	return;
1122
1123	ev_start ((W)w, ++checkcnt);
1124	array_needsize (checks, checkmax, checkcnt, );
1125	checks [checkcnt - 1] = w;
1126	}
1127
1128	void
1129	ev_check_stop (struct ev_check *w)
1130	{
1131	ev_clear_pending ((W)w);
1132	if (ev_is_active (w))
1133	return;
1134
1135	checks [w->active - 1] = checks [--checkcnt];
1136	ev_stop ((W)w);
1137	}
1138
1139	void
1140	ev_child_start (struct ev_child *w)
1141	{
1142	if (ev_is_active (w))
1143	return;
1144
1145	ev_start ((W)w, 1);
1146	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1147	}
1148
1149	void
1150	ev_child_stop (struct ev_child *w)
1151	{
1152	ev_clear_pending ((W)w);
1153	if (ev_is_active (w))
1154	return;
1155
1156	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1378	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1157	ev_stop ((W)w);	1379	ev_stop (EV_A_ (W)w);
1158	}	1380	}
1159		1381
1160	/*****************************************************************************/	1382	/*****************************************************************************/
1161		1383
1162	struct ev_once	1384	struct ev_once
…		…
1166	void (*cb)(int revents, void *arg);	1388	void (*cb)(int revents, void *arg);
1167	void *arg;	1389	void *arg;
1168	};	1390	};
1169		1391
1170	static void	1392	static void
1171	once_cb (struct ev_once *once, int revents)	1393	once_cb (EV_P_ struct ev_once *once, int revents)
1172	{	1394	{
1173	void (*cb)(int revents, void *arg) = once->cb;	1395	void (*cb)(int revents, void *arg) = once->cb;
1174	void *arg = once->arg;	1396	void *arg = once->arg;
1175		1397
1176	ev_io_stop (&once->io);	1398	ev_io_stop (EV_A_ &once->io);
1177	ev_timer_stop (&once->to);	1399	ev_timer_stop (EV_A_ &once->to);
1178	free (once);	1400	free (once);
1179		1401
1180	cb (revents, arg);	1402	cb (revents, arg);
1181	}	1403	}
1182		1404
1183	static void	1405	static void
1184	once_cb_io (struct ev_io *w, int revents)	1406	once_cb_io (EV_P_ struct ev_io *w, int revents)
1185	{	1407	{
1186	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);
1187	}	1409	}
1188		1410
1189	static void	1411	static void
1190	once_cb_to (struct ev_timer *w, int revents)	1412	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1191	{	1413	{
1192	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);
1193	}	1415	}
1194		1416
1195	void	1417	void
1196	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)
1197	{	1419	{
1198	struct ev_once *once = malloc (sizeof (struct ev_once));	1420	struct ev_once *once = malloc (sizeof (struct ev_once));
1199		1421
1200	if (!once)	1422	if (!once)
1201	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1423	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
…		…
1206		1428
1207	ev_watcher_init (&once->io, once_cb_io);	1429	ev_watcher_init (&once->io, once_cb_io);
1208	if (fd >= 0)	1430	if (fd >= 0)
1209	{	1431	{
1210	ev_io_set (&once->io, fd, events);	1432	ev_io_set (&once->io, fd, events);
1211	ev_io_start (&once->io);	1433	ev_io_start (EV_A_ &once->io);
1212	}	1434	}
1213		1435
1214	ev_watcher_init (&once->to, once_cb_to);	1436	ev_watcher_init (&once->to, once_cb_to);
1215	if (timeout >= 0.)	1437	if (timeout >= 0.)
1216	{	1438	{
1217	ev_timer_set (&once->to, timeout, 0.);	1439	ev_timer_set (&once->to, timeout, 0.);
1218	ev_timer_start (&once->to);	1440	ev_timer_start (EV_A_ &once->to);
1219	}	1441	}
1220	}	1442	}
1221	}	1443	}
1222		1444
1223	/*****************************************************************************/
1224
1225	#if 0
1226
1227	struct ev_io wio;
1228
1229	static void
1230	sin_cb (struct ev_io *w, int revents)
1231	{
1232	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1233	}
1234
1235	static void
1236	ocb (struct ev_timer *w, int revents)
1237	{
1238	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1239	ev_timer_stop (w);
1240	ev_timer_start (w);
1241	}
1242
1243	static void
1244	scb (struct ev_signal *w, int revents)
1245	{
1246	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1247	ev_io_stop (&wio);
1248	ev_io_start (&wio);
1249	}
1250
1251	static void
1252	gcb (struct ev_signal *w, int revents)
1253	{
1254	fprintf (stderr, "generic %x\n", revents);
1255
1256	}
1257
1258	int main (void)
1259	{
1260	ev_init (0);
1261
1262	ev_io_init (&wio, sin_cb, 0, EV_READ);
1263	ev_io_start (&wio);
1264
1265	struct ev_timer t[10000];
1266
1267	#if 0
1268	int i;
1269	for (i = 0; i < 10000; ++i)
1270	{
1271	struct ev_timer *w = t + i;
1272	ev_watcher_init (w, ocb, i);
1273	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1274	ev_timer_start (w);
1275	if (drand48 () < 0.5)
1276	ev_timer_stop (w);
1277	}
1278	#endif
1279
1280	struct ev_timer t1;
1281	ev_timer_init (&t1, ocb, 5, 10);
1282	ev_timer_start (&t1);
1283
1284	struct ev_signal sig;
1285	ev_signal_init (&sig, scb, SIGQUIT);
1286	ev_signal_start (&sig);
1287
1288	struct ev_check cw;
1289	ev_check_init (&cw, gcb);
1290	ev_check_start (&cw);
1291
1292	struct ev_idle iw;
1293	ev_idle_init (&iw, gcb);
1294	ev_idle_start (&iw);
1295
1296	ev_loop (0);
1297
1298	return 0;
1299	}
1300
1301	#endif
1302
1303
1304
1305

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