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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 1.67 by root, Mon Nov 5 16:42:15 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
31	#if EV_USE_CONFIG_H	31	#ifndef EV_STANDALONE
32	# include "config.h"	32	# include "config.h"
		33
		34	# if HAVE_CLOCK_GETTIME
		35	# define EV_USE_MONOTONIC 1
		36	# define EV_USE_REALTIME 1
		37	# endif
		38
		39	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		40	# define EV_USE_SELECT 1
		41	# endif
		42
		43	# if HAVE_POLL && HAVE_POLL_H
		44	# define EV_USE_POLL 1
		45	# endif
		46
		47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		48	# define EV_USE_EPOLL 1
		49	# endif
		50
		51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		52	# define EV_USE_KQUEUE 1
		53	# endif
		54
33	#endif	55	#endif
34		56
35	#include <math.h>	57	#include <math.h>
36	#include <stdlib.h>	58	#include <stdlib.h>
37	#include <unistd.h>	59	#include <unistd.h>
…		…
70		92
71	#ifndef EV_USE_KQUEUE	93	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	94	# define EV_USE_KQUEUE 0
73	#endif	95	#endif
74		96
		97	#ifndef EV_USE_WIN32
		98	# ifdef WIN32
		99	# define EV_USE_WIN32 1
		100	# else
		101	# define EV_USE_WIN32 0
		102	# endif
		103	#endif
		104
75	#ifndef EV_USE_REALTIME	105	#ifndef EV_USE_REALTIME
76	# define EV_USE_REALTIME 1	106	# define EV_USE_REALTIME 1
77	#endif	107	#endif
78		108
79	/**/	109	/**/
…		…
113		143
114	typedef struct ev_watcher *W;	144	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	145	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	146	typedef struct ev_watcher_time *WT;
117		147
118	static ev_tstamp now_floor, now, diff; /* monotonic clock */	148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119	ev_tstamp ev_now;
120	int ev_method;
121		149
122	static int have_monotonic; /* runtime */	150	#if WIN32
123		151	/* note: the comment below could not be substantiated, but what would I care */
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	152	/* MSDN says this is required to handle SIGFPE */
125	static void (*method_modify)(int fd, int oev, int nev);	153	volatile double SIGFPE_REQ = 0.0f;
126	static void (*method_poll)(ev_tstamp timeout);	154	#endif
127		155
128	/*****************************************************************************/	156	/*****************************************************************************/
129		157
130	ev_tstamp	158	typedef struct
		159	{
		160	struct ev_watcher_list *head;
		161	unsigned char events;
		162	unsigned char reify;
		163	} ANFD;
		164
		165	typedef struct
		166	{
		167	W w;
		168	int events;
		169	} ANPENDING;
		170
		171	#if EV_MULTIPLICITY
		172
		173	struct ev_loop
		174	{
		175	# define VAR(name,decl) decl;
		176	# include "ev_vars.h"
		177	};
		178	# undef VAR
		179	# include "ev_wrap.h"
		180
		181	#else
		182
		183	# define VAR(name,decl) static decl;
		184	# include "ev_vars.h"
		185	# undef VAR
		186
		187	#endif
		188
		189	/*****************************************************************************/
		190
		191	inline ev_tstamp
131	ev_time (void)	192	ev_time (void)
132	{	193	{
133	#if EV_USE_REALTIME	194	#if EV_USE_REALTIME
134	struct timespec ts;	195	struct timespec ts;
135	clock_gettime (CLOCK_REALTIME, &ts);	196	clock_gettime (CLOCK_REALTIME, &ts);
…		…
139	gettimeofday (&tv, 0);	200	gettimeofday (&tv, 0);
140	return tv.tv_sec + tv.tv_usec * 1e-6;	201	return tv.tv_sec + tv.tv_usec * 1e-6;
141	#endif	202	#endif
142	}	203	}
143		204
144	static ev_tstamp	205	inline ev_tstamp
145	get_clock (void)	206	get_clock (void)
146	{	207	{
147	#if EV_USE_MONOTONIC	208	#if EV_USE_MONOTONIC
148	if (expect_true (have_monotonic))	209	if (expect_true (have_monotonic))
149	{	210	{
…		…
152	return ts.tv_sec + ts.tv_nsec * 1e-9;	213	return ts.tv_sec + ts.tv_nsec * 1e-9;
153	}	214	}
154	#endif	215	#endif
155		216
156	return ev_time ();	217	return ev_time ();
		218	}
		219
		220	ev_tstamp
		221	ev_now (EV_P)
		222	{
		223	return rt_now;
157	}	224	}
158		225
159	#define array_roundsize(base,n) ((n) | 4 & ~3)	226	#define array_roundsize(base,n) ((n) | 4 & ~3)
160		227
161	#define array_needsize(base,cur,cnt,init) \	228	#define array_needsize(base,cur,cnt,init) \
…		…
171	base = realloc (base, sizeof (*base) * (newcnt)); \	238	base = realloc (base, sizeof (*base) * (newcnt)); \
172	init (base + cur, newcnt - cur); \	239	init (base + cur, newcnt - cur); \
173	cur = newcnt; \	240	cur = newcnt; \
174	}	241	}
175		242
		243	#define array_slim(stem) \
		244	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		245	{ \
		246	stem ## max = array_roundsize (stem ## cnt >> 1); \
		247	base = realloc (base, sizeof (*base) * (stem ## max)); \
		248	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		249	}
		250
		251	#define array_free(stem, idx) \
		252	free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
		253
176	/*****************************************************************************/	254	/*****************************************************************************/
177
178	typedef struct
179	{
180	struct ev_io *head;
181	unsigned char events;
182	unsigned char reify;
183	} ANFD;
184
185	static ANFD *anfds;
186	static int anfdmax;
187		255
188	static void	256	static void
189	anfds_init (ANFD *base, int count)	257	anfds_init (ANFD *base, int count)
190	{	258	{
191	while (count--)	259	while (count--)
…		…
196		264
197	++base;	265	++base;
198	}	266	}
199	}	267	}
200		268
201	typedef struct
202	{
203	W w;
204	int events;
205	} ANPENDING;
206
207	static ANPENDING *pendings [NUMPRI];
208	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
209
210	static void	269	static void
211	event (W w, int events)	270	event (EV_P_ W w, int events)
212	{	271	{
213	if (w->pending)	272	if (w->pending)
214	{	273	{
215	pendings [ABSPRI (w)][w->pending - 1].events |= events;	274	pendings [ABSPRI (w)][w->pending - 1].events |= events;
216	return;	275	return;
…		…
221	pendings [ABSPRI (w)][w->pending - 1].w = w;	280	pendings [ABSPRI (w)][w->pending - 1].w = w;
222	pendings [ABSPRI (w)][w->pending - 1].events = events;	281	pendings [ABSPRI (w)][w->pending - 1].events = events;
223	}	282	}
224		283
225	static void	284	static void
226	queue_events (W *events, int eventcnt, int type)	285	queue_events (EV_P_ W *events, int eventcnt, int type)
227	{	286	{
228	int i;	287	int i;
229		288
230	for (i = 0; i < eventcnt; ++i)	289	for (i = 0; i < eventcnt; ++i)
231	event (events [i], type);	290	event (EV_A_ events [i], type);
232	}	291	}
233		292
234	static void	293	static void
235	fd_event (int fd, int events)	294	fd_event (EV_P_ int fd, int events)
236	{	295	{
237	ANFD *anfd = anfds + fd;	296	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	297	struct ev_io *w;
239		298
240	for (w = anfd->head; w; w = w->next)	299	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
241	{	300	{
242	int ev = w->events & events;	301	int ev = w->events & events;
243		302
244	if (ev)	303	if (ev)
245	event ((W)w, ev);	304	event (EV_A_ (W)w, ev);
246	}	305	}
247	}	306	}
248		307
249	/*****************************************************************************/	308	/*****************************************************************************/
250		309
251	static int *fdchanges;
252	static int fdchangemax, fdchangecnt;
253
254	static void	310	static void
255	fd_reify (void)	311	fd_reify (EV_P)
256	{	312	{
257	int i;	313	int i;
258		314
259	for (i = 0; i < fdchangecnt; ++i)	315	for (i = 0; i < fdchangecnt; ++i)
260	{	316	{
…		…
262	ANFD *anfd = anfds + fd;	318	ANFD *anfd = anfds + fd;
263	struct ev_io *w;	319	struct ev_io *w;
264		320
265	int events = 0;	321	int events = 0;
266		322
267	for (w = anfd->head; w; w = w->next)	323	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
268	events |= w->events;	324	events |= w->events;
269		325
270	anfd->reify = 0;	326	anfd->reify = 0;
271		327
272	if (anfd->events != events)
273	{
274	method_modify (fd, anfd->events, events);	328	method_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	329	anfd->events = events;
276	}
277	}	330	}
278		331
279	fdchangecnt = 0;	332	fdchangecnt = 0;
280	}	333	}
281		334
282	static void	335	static void
283	fd_change (int fd)	336	fd_change (EV_P_ int fd)
284	{	337	{
285	if (anfds [fd].reify || fdchangecnt < 0)	338	if (anfds [fd].reify || fdchangecnt < 0)
286	return;	339	return;
287		340
288	anfds [fd].reify = 1;	341	anfds [fd].reify = 1;
…		…
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	344	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
292	fdchanges [fdchangecnt - 1] = fd;	345	fdchanges [fdchangecnt - 1] = fd;
293	}	346	}
294		347
295	static void	348	static void
296	fd_kill (int fd)	349	fd_kill (EV_P_ int fd)
297	{	350	{
298	struct ev_io *w;	351	struct ev_io *w;
299		352
300	printf ("killing fd %d\n", fd);//D
301	while ((w = anfds [fd].head))	353	while ((w = (struct ev_io *)anfds [fd].head))
302	{	354	{
303	ev_io_stop (w);	355	ev_io_stop (EV_A_ w);
304	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	356	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
305	}	357	}
306	}	358	}
307		359
308	/* called on EBADF to verify fds */	360	/* called on EBADF to verify fds */
309	static void	361	static void
310	fd_ebadf (void)	362	fd_ebadf (EV_P)
311	{	363	{
312	int fd;	364	int fd;
313		365
314	for (fd = 0; fd < anfdmax; ++fd)	366	for (fd = 0; fd < anfdmax; ++fd)
315	if (anfds [fd].events)	367	if (anfds [fd].events)
316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	368	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
317	fd_kill (fd);	369	fd_kill (EV_A_ fd);
318	}	370	}
319		371
320	/* called on ENOMEM in select/poll to kill some fds and retry */	372	/* called on ENOMEM in select/poll to kill some fds and retry */
321	static void	373	static void
322	fd_enomem (void)	374	fd_enomem (EV_P)
323	{	375	{
324	int fd = anfdmax;	376	int fd;
325		377
326	while (fd--)	378	for (fd = anfdmax; fd--; )
327	if (anfds [fd].events)	379	if (anfds [fd].events)
328	{	380	{
329	close (fd);	381	close (fd);
330	fd_kill (fd);	382	fd_kill (EV_A_ fd);
331	return;	383	return;
332	}	384	}
333	}	385	}
334		386
		387	/* susually called after fork if method needs to re-arm all fds from scratch */
		388	static void
		389	fd_rearm_all (EV_P)
		390	{
		391	int fd;
		392
		393	/* this should be highly optimised to not do anything but set a flag */
		394	for (fd = 0; fd < anfdmax; ++fd)
		395	if (anfds [fd].events)
		396	{
		397	anfds [fd].events = 0;
		398	fd_change (EV_A_ fd);
		399	}
		400	}
		401
335	/*****************************************************************************/	402	/*****************************************************************************/
336		403
337	static struct ev_timer **timers;
338	static int timermax, timercnt;
339
340	static struct ev_periodic **periodics;
341	static int periodicmax, periodiccnt;
342
343	static void	404	static void
344	upheap (WT *timers, int k)	405	upheap (WT *heap, int k)
345	{	406	{
346	WT w = timers [k];	407	WT w = heap [k];
347		408
348	while (k && timers [k >> 1]->at > w->at)	409	while (k && heap [k >> 1]->at > w->at)
349	{	410	{
350	timers [k] = timers [k >> 1];	411	heap [k] = heap [k >> 1];
351	timers [k]->active = k + 1;	412	((W)heap [k])->active = k + 1;
352	k >>= 1;	413	k >>= 1;
353	}	414	}
354		415
355	timers [k] = w;	416	heap [k] = w;
356	timers [k]->active = k + 1;	417	((W)heap [k])->active = k + 1;
357		418
358	}	419	}
359		420
360	static void	421	static void
361	downheap (WT *timers, int N, int k)	422	downheap (WT *heap, int N, int k)
362	{	423	{
363	WT w = timers [k];	424	WT w = heap [k];
364		425
365	while (k < (N >> 1))	426	while (k < (N >> 1))
366	{	427	{
367	int j = k << 1;	428	int j = k << 1;
368		429
369	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	430	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
370	++j;	431	++j;
371		432
372	if (w->at <= timers [j]->at)	433	if (w->at <= heap [j]->at)
373	break;	434	break;
374		435
375	timers [k] = timers [j];	436	heap [k] = heap [j];
376	timers [k]->active = k + 1;	437	((W)heap [k])->active = k + 1;
377	k = j;	438	k = j;
378	}	439	}
379		440
380	timers [k] = w;	441	heap [k] = w;
381	timers [k]->active = k + 1;	442	((W)heap [k])->active = k + 1;
382	}	443	}
383		444
384	/*****************************************************************************/	445	/*****************************************************************************/
385		446
386	typedef struct	447	typedef struct
387	{	448	{
388	struct ev_signal *head;	449	struct ev_watcher_list *head;
389	sig_atomic_t volatile gotsig;	450	sig_atomic_t volatile gotsig;
390	} ANSIG;	451	} ANSIG;
391		452
392	static ANSIG *signals;	453	static ANSIG *signals;
393	static int signalmax;	454	static int signalmax;
…		…
409	}	470	}
410		471
411	static void	472	static void
412	sighandler (int signum)	473	sighandler (int signum)
413	{	474	{
		475	#if WIN32
		476	signal (signum, sighandler);
		477	#endif
		478
414	signals [signum - 1].gotsig = 1;	479	signals [signum - 1].gotsig = 1;
415		480
416	if (!gotsig)	481	if (!gotsig)
417	{	482	{
		483	int old_errno = errno;
418	gotsig = 1;	484	gotsig = 1;
419	write (sigpipe [1], &signum, 1);	485	write (sigpipe [1], &signum, 1);
		486	errno = old_errno;
420	}	487	}
421	}	488	}
422		489
423	static void	490	static void
424	sigcb (struct ev_io *iow, int revents)	491	sigcb (EV_P_ struct ev_io *iow, int revents)
425	{	492	{
426	struct ev_signal *w;	493	struct ev_watcher_list *w;
427	int signum;	494	int signum;
428		495
429	read (sigpipe [0], &revents, 1);	496	read (sigpipe [0], &revents, 1);
430	gotsig = 0;	497	gotsig = 0;
431		498
…		…
433	if (signals [signum].gotsig)	500	if (signals [signum].gotsig)
434	{	501	{
435	signals [signum].gotsig = 0;	502	signals [signum].gotsig = 0;
436		503
437	for (w = signals [signum].head; w; w = w->next)	504	for (w = signals [signum].head; w; w = w->next)
438	event ((W)w, EV_SIGNAL);	505	event (EV_A_ (W)w, EV_SIGNAL);
439	}	506	}
440	}	507	}
441		508
442	static void	509	static void
443	siginit (void)	510	siginit (EV_P)
444	{	511	{
445	#ifndef WIN32	512	#ifndef WIN32
446	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	513	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
447	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	514	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
448		515
…		…
450	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	517	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
451	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	518	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
452	#endif	519	#endif
453		520
454	ev_io_set (&sigev, sigpipe [0], EV_READ);	521	ev_io_set (&sigev, sigpipe [0], EV_READ);
455	ev_io_start (&sigev);	522	ev_io_start (EV_A_ &sigev);
		523	ev_unref (EV_A); /* child watcher should not keep loop alive */
456	}	524	}
457		525
458	/*****************************************************************************/	526	/*****************************************************************************/
459		527
460	static struct ev_idle **idles;	528	#ifndef WIN32
461	static int idlemax, idlecnt;
462
463	static struct ev_prepare **prepares;
464	static int preparemax, preparecnt;
465
466	static struct ev_check **checks;
467	static int checkmax, checkcnt;
468
469	/*****************************************************************************/
470		529
471	static struct ev_child *childs [PID_HASHSIZE];	530	static struct ev_child *childs [PID_HASHSIZE];
472	static struct ev_signal childev;	531	static struct ev_signal childev;
473		532
474	#ifndef WIN32
475
476	#ifndef WCONTINUED	533	#ifndef WCONTINUED
477	# define WCONTINUED 0	534	# define WCONTINUED 0
478	#endif	535	#endif
479		536
480	static void	537	static void
481	childcb (struct ev_signal *sw, int revents)	538	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
482	{	539	{
483	struct ev_child *w;	540	struct ev_child *w;
		541
		542	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		543	if (w->pid == pid || !w->pid)
		544	{
		545	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		546	w->rpid = pid;
		547	w->rstatus = status;
		548	event (EV_A_ (W)w, EV_CHILD);
		549	}
		550	}
		551
		552	static void
		553	childcb (EV_P_ struct ev_signal *sw, int revents)
		554	{
484	int pid, status;	555	int pid, status;
485		556
486	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	557	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
487	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	558	{
488	if (w->pid == pid || !w->pid)	559	/* make sure we are called again until all childs have been reaped */
489	{	560	event (EV_A_ (W)sw, EV_SIGNAL);
490	w->rpid = pid;	561
491	w->rstatus = status;	562	child_reap (EV_A_ sw, pid, pid, status);
492	event ((W)w, EV_CHILD);	563	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
493	}	564	}
494	}	565	}
495		566
496	#endif	567	#endif
497		568
498	/*****************************************************************************/	569	/*****************************************************************************/
…		…
520	ev_version_minor (void)	591	ev_version_minor (void)
521	{	592	{
522	return EV_VERSION_MINOR;	593	return EV_VERSION_MINOR;
523	}	594	}
524		595
525	/* return true if we are running with elevated privileges and ignore env variables */	596	/* return true if we are running with elevated privileges and should ignore env variables */
526	static int	597	static int
527	enable_secure ()	598	enable_secure (void)
528	{	599	{
		600	#ifdef WIN32
		601	return 0;
		602	#else
529	return getuid () != geteuid ()	603	return getuid () != geteuid ()
530	|| getgid () != getegid ();	604	|| getgid () != getegid ();
		605	#endif
531	}	606	}
532		607
533	int ev_init (int methods)	608	int
		609	ev_method (EV_P)
534	{	610	{
		611	return method;
		612	}
		613
		614	static void
		615	loop_init (EV_P_ int methods)
		616	{
535	if (!ev_method)	617	if (!method)
536	{	618	{
537	#if EV_USE_MONOTONIC	619	#if EV_USE_MONOTONIC
538	{	620	{
539	struct timespec ts;	621	struct timespec ts;
540	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	622	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
541	have_monotonic = 1;	623	have_monotonic = 1;
542	}	624	}
543	#endif	625	#endif
544		626
545	ev_now = ev_time ();	627	rt_now = ev_time ();
546	now = get_clock ();	628	mn_now = get_clock ();
547	now_floor = now;	629	now_floor = mn_now;
548	diff = ev_now - now;	630	rtmn_diff = rt_now - mn_now;
549
550	if (pipe (sigpipe))
551	return 0;
552		631
553	if (methods == EVMETHOD_AUTO)	632	if (methods == EVMETHOD_AUTO)
554	if (!enable_secure () && getenv ("LIBEV_METHODS"))	633	if (!enable_secure () && getenv ("LIBEV_METHODS"))
555	methods = atoi (getenv ("LIBEV_METHODS"));	634	methods = atoi (getenv ("LIBEV_METHODS"));
556	else	635	else
557	methods = EVMETHOD_ANY;	636	methods = EVMETHOD_ANY;
558		637
559	ev_method = 0;	638	method = 0;
		639	#if EV_USE_WIN32
		640	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		641	#endif
560	#if EV_USE_KQUEUE	642	#if EV_USE_KQUEUE
561	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	643	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
562	#endif	644	#endif
563	#if EV_USE_EPOLL	645	#if EV_USE_EPOLL
564	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	646	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
565	#endif	647	#endif
566	#if EV_USE_POLL	648	#if EV_USE_POLL
567	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	649	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
568	#endif	650	#endif
569	#if EV_USE_SELECT	651	#if EV_USE_SELECT
570	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	652	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
571	#endif	653	#endif
		654	}
		655	}
572		656
		657	void
		658	loop_destroy (EV_P)
		659	{
		660	int i;
		661
		662	#if EV_USE_WIN32
		663	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		664	#endif
		665	#if EV_USE_KQUEUE
		666	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		667	#endif
		668	#if EV_USE_EPOLL
		669	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		670	#endif
		671	#if EV_USE_POLL
		672	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		673	#endif
		674	#if EV_USE_SELECT
		675	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		676	#endif
		677
		678	for (i = NUMPRI; i--; )
		679	array_free (pending, [i]);
		680
		681	array_free (fdchange, );
		682	array_free (timer, );
		683	array_free (periodic, );
		684	array_free (idle, );
		685	array_free (prepare, );
		686	array_free (check, );
		687
		688	method = 0;
		689	/*TODO*/
		690	}
		691
		692	void
		693	loop_fork (EV_P)
		694	{
		695	/*TODO*/
		696	#if EV_USE_EPOLL
		697	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		698	#endif
		699	#if EV_USE_KQUEUE
		700	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		701	#endif
		702	}
		703
		704	#if EV_MULTIPLICITY
		705	struct ev_loop *
		706	ev_loop_new (int methods)
		707	{
		708	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));
		709
		710	loop_init (EV_A_ methods);
		711
		712	if (ev_method (EV_A))
		713	return loop;
		714
		715	return 0;
		716	}
		717
		718	void
		719	ev_loop_destroy (EV_P)
		720	{
		721	loop_destroy (EV_A);
		722	free (loop);
		723	}
		724
		725	void
		726	ev_loop_fork (EV_P)
		727	{
		728	loop_fork (EV_A);
		729	}
		730
		731	#endif
		732
		733	#if EV_MULTIPLICITY
		734	struct ev_loop default_loop_struct;
		735	static struct ev_loop *default_loop;
		736
		737	struct ev_loop *
		738	#else
		739	static int default_loop;
		740
		741	int
		742	#endif
		743	ev_default_loop (int methods)
		744	{
		745	if (sigpipe [0] == sigpipe [1])
		746	if (pipe (sigpipe))
		747	return 0;
		748
		749	if (!default_loop)
		750	{
		751	#if EV_MULTIPLICITY
		752	struct ev_loop *loop = default_loop = &default_loop_struct;
		753	#else
		754	default_loop = 1;
		755	#endif
		756
		757	loop_init (EV_A_ methods);
		758
573	if (ev_method)	759	if (ev_method (EV_A))
574	{	760	{
575	ev_watcher_init (&sigev, sigcb);	761	ev_watcher_init (&sigev, sigcb);
		762	ev_set_priority (&sigev, EV_MAXPRI);
576	siginit ();	763	siginit (EV_A);
577		764
578	#ifndef WIN32	765	#ifndef WIN32
579	ev_signal_init (&childev, childcb, SIGCHLD);	766	ev_signal_init (&childev, childcb, SIGCHLD);
		767	ev_set_priority (&childev, EV_MAXPRI);
580	ev_signal_start (&childev);	768	ev_signal_start (EV_A_ &childev);
		769	ev_unref (EV_A); /* child watcher should not keep loop alive */
581	#endif	770	#endif
582	}	771	}
		772	else
		773	default_loop = 0;
583	}	774	}
584		775
585	return ev_method;	776	return default_loop;
586	}	777	}
587		778
588	/*****************************************************************************/
589
590	void	779	void
591	ev_fork_prepare (void)	780	ev_default_destroy (void)
592	{	781	{
593	/* nop */	782	#if EV_MULTIPLICITY
594	}	783	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	784	#endif
609		785
		786	ev_ref (EV_A); /* child watcher */
		787	ev_signal_stop (EV_A_ &childev);
		788
		789	ev_ref (EV_A); /* signal watcher */
610	ev_io_stop (&sigev);	790	ev_io_stop (EV_A_ &sigev);
		791
		792	close (sigpipe [0]); sigpipe [0] = 0;
		793	close (sigpipe [1]); sigpipe [1] = 0;
		794
		795	loop_destroy (EV_A);
		796	}
		797
		798	void
		799	ev_default_fork (void)
		800	{
		801	#if EV_MULTIPLICITY
		802	struct ev_loop *loop = default_loop;
		803	#endif
		804
		805	loop_fork (EV_A);
		806
		807	ev_io_stop (EV_A_ &sigev);
611	close (sigpipe [0]);	808	close (sigpipe [0]);
612	close (sigpipe [1]);	809	close (sigpipe [1]);
613	pipe (sigpipe);	810	pipe (sigpipe);
		811
		812	ev_ref (EV_A); /* signal watcher */
614	siginit ();	813	siginit (EV_A);
615	}	814	}
616		815
617	/*****************************************************************************/	816	/*****************************************************************************/
618		817
619	static void	818	static void
620	call_pending (void)	819	call_pending (EV_P)
621	{	820	{
622	int pri;	821	int pri;
623		822
624	for (pri = NUMPRI; pri--; )	823	for (pri = NUMPRI; pri--; )
625	while (pendingcnt [pri])	824	while (pendingcnt [pri])
…		…
627	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	826	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
628		827
629	if (p->w)	828	if (p->w)
630	{	829	{
631	p->w->pending = 0;	830	p->w->pending = 0;
632	p->w->cb (p->w, p->events);	831	p->w->cb (EV_A_ p->w, p->events);
633	}	832	}
634	}	833	}
635	}	834	}
636		835
637	static void	836	static void
638	timers_reify (void)	837	timers_reify (EV_P)
639	{	838	{
640	while (timercnt && timers [0]->at <= now)	839	while (timercnt && ((WT)timers [0])->at <= mn_now)
641	{	840	{
642	struct ev_timer *w = timers [0];	841	struct ev_timer *w = timers [0];
		842
		843	assert (("inactive timer on timer heap detected", ev_is_active (w)));
643		844
644	/* first reschedule or stop timer */	845	/* first reschedule or stop timer */
645	if (w->repeat)	846	if (w->repeat)
646	{	847	{
647	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	848	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
648	w->at = now + w->repeat;	849	((WT)w)->at = mn_now + w->repeat;
649	downheap ((WT *)timers, timercnt, 0);	850	downheap ((WT *)timers, timercnt, 0);
650	}	851	}
651	else	852	else
652	ev_timer_stop (w); /* nonrepeating: stop timer */	853	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
653		854
654	event ((W)w, EV_TIMEOUT);	855	event (EV_A_ (W)w, EV_TIMEOUT);
655	}	856	}
656	}	857	}
657		858
658	static void	859	static void
659	periodics_reify (void)	860	periodics_reify (EV_P)
660	{	861	{
661	while (periodiccnt && periodics [0]->at <= ev_now)	862	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
662	{	863	{
663	struct ev_periodic *w = periodics [0];	864	struct ev_periodic *w = periodics [0];
		865
		866	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
664		867
665	/* first reschedule or stop timer */	868	/* first reschedule or stop timer */
666	if (w->interval)	869	if (w->interval)
667	{	870	{
668	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	871	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
669	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	872	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
670	downheap ((WT *)periodics, periodiccnt, 0);	873	downheap ((WT *)periodics, periodiccnt, 0);
671	}	874	}
672	else	875	else
673	ev_periodic_stop (w); /* nonrepeating: stop timer */	876	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
674		877
675	event ((W)w, EV_PERIODIC);	878	event (EV_A_ (W)w, EV_PERIODIC);
676	}	879	}
677	}	880	}
678		881
679	static void	882	static void
680	periodics_reschedule (ev_tstamp diff)	883	periodics_reschedule (EV_P)
681	{	884	{
682	int i;	885	int i;
683		886
684	/* adjust periodics after time jump */	887	/* adjust periodics after time jump */
685	for (i = 0; i < periodiccnt; ++i)	888	for (i = 0; i < periodiccnt; ++i)
686	{	889	{
687	struct ev_periodic *w = periodics [i];	890	struct ev_periodic *w = periodics [i];
688		891
689	if (w->interval)	892	if (w->interval)
690	{	893	{
691	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	894	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
692		895
693	if (fabs (diff) >= 1e-4)	896	if (fabs (diff) >= 1e-4)
694	{	897	{
695	ev_periodic_stop (w);	898	ev_periodic_stop (EV_A_ w);
696	ev_periodic_start (w);	899	ev_periodic_start (EV_A_ w);
697		900
698	i = 0; /* restart loop, inefficient, but time jumps should be rare */	901	i = 0; /* restart loop, inefficient, but time jumps should be rare */
699	}	902	}
700	}	903	}
701	}	904	}
702	}	905	}
703		906
704	static int	907	inline int
705	time_update_monotonic (void)	908	time_update_monotonic (EV_P)
706	{	909	{
707	now = get_clock ();	910	mn_now = get_clock ();
708		911
709	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	912	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
710	{	913	{
711	ev_now = now + diff;	914	rt_now = rtmn_diff + mn_now;
712	return 0;	915	return 0;
713	}	916	}
714	else	917	else
715	{	918	{
716	now_floor = now;	919	now_floor = mn_now;
717	ev_now = ev_time ();	920	rt_now = ev_time ();
718	return 1;	921	return 1;
719	}	922	}
720	}	923	}
721		924
722	static void	925	static void
723	time_update (void)	926	time_update (EV_P)
724	{	927	{
725	int i;	928	int i;
726		929
727	#if EV_USE_MONOTONIC	930	#if EV_USE_MONOTONIC
728	if (expect_true (have_monotonic))	931	if (expect_true (have_monotonic))
729	{	932	{
730	if (time_update_monotonic ())	933	if (time_update_monotonic (EV_A))
731	{	934	{
732	ev_tstamp odiff = diff;	935	ev_tstamp odiff = rtmn_diff;
733		936
734	for (i = 4; --i; ) /* loop a few times, before making important decisions */	937	for (i = 4; --i; ) /* loop a few times, before making important decisions */
735	{	938	{
736	diff = ev_now - now;	939	rtmn_diff = rt_now - mn_now;
737		940
738	if (fabs (odiff - diff) < MIN_TIMEJUMP)	941	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
739	return; /* all is well */	942	return; /* all is well */
740		943
741	ev_now = ev_time ();	944	rt_now = ev_time ();
742	now = get_clock ();	945	mn_now = get_clock ();
743	now_floor = now;	946	now_floor = mn_now;
744	}	947	}
745		948
746	periodics_reschedule (diff - odiff);	949	periodics_reschedule (EV_A);
747	/* no timer adjustment, as the monotonic clock doesn't jump */	950	/* no timer adjustment, as the monotonic clock doesn't jump */
		951	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
748	}	952	}
749	}	953	}
750	else	954	else
751	#endif	955	#endif
752	{	956	{
753	ev_now = ev_time ();	957	rt_now = ev_time ();
754		958
755	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	959	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
756	{	960	{
757	periodics_reschedule (ev_now - now);	961	periodics_reschedule (EV_A);
758		962
759	/* adjust timers. this is easy, as the offset is the same for all */	963	/* adjust timers. this is easy, as the offset is the same for all */
760	for (i = 0; i < timercnt; ++i)	964	for (i = 0; i < timercnt; ++i)
761	timers [i]->at += diff;	965	((WT)timers [i])->at += rt_now - mn_now;
762	}	966	}
763		967
764	now = ev_now;	968	mn_now = rt_now;
765	}	969	}
766	}	970	}
767		971
768	int ev_loop_done;	972	void
		973	ev_ref (EV_P)
		974	{
		975	++activecnt;
		976	}
769		977
		978	void
		979	ev_unref (EV_P)
		980	{
		981	--activecnt;
		982	}
		983
		984	static int loop_done;
		985
		986	void
770	void ev_loop (int flags)	987	ev_loop (EV_P_ int flags)
771	{	988	{
772	double block;	989	double block;
773	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	990	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
774		991
775	do	992	do
776	{	993	{
777	/* queue check watchers (and execute them) */	994	/* queue check watchers (and execute them) */
778	if (expect_false (preparecnt))	995	if (expect_false (preparecnt))
779	{	996	{
780	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	997	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
781	call_pending ();	998	call_pending (EV_A);
782	}	999	}
783		1000
784	/* update fd-related kernel structures */	1001	/* update fd-related kernel structures */
785	fd_reify ();	1002	fd_reify (EV_A);
786		1003
787	/* calculate blocking time */	1004	/* calculate blocking time */
788		1005
789	/* we only need this for !monotonic clockor timers, but as we basically	1006	/* we only need this for !monotonic clockor timers, but as we basically
790	always have timers, we just calculate it always */	1007	always have timers, we just calculate it always */
791	#if EV_USE_MONOTONIC	1008	#if EV_USE_MONOTONIC
792	if (expect_true (have_monotonic))	1009	if (expect_true (have_monotonic))
793	time_update_monotonic ();	1010	time_update_monotonic (EV_A);
794	else	1011	else
795	#endif	1012	#endif
796	{	1013	{
797	ev_now = ev_time ();	1014	rt_now = ev_time ();
798	now = ev_now;	1015	mn_now = rt_now;
799	}	1016	}
800		1017
801	if (flags & EVLOOP_NONBLOCK || idlecnt)	1018	if (flags & EVLOOP_NONBLOCK || idlecnt)
802	block = 0.;	1019	block = 0.;
803	else	1020	else
804	{	1021	{
805	block = MAX_BLOCKTIME;	1022	block = MAX_BLOCKTIME;
806		1023
807	if (timercnt)	1024	if (timercnt)
808	{	1025	{
809	ev_tstamp to = timers [0]->at - now + method_fudge;	1026	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
810	if (block > to) block = to;	1027	if (block > to) block = to;
811	}	1028	}
812		1029
813	if (periodiccnt)	1030	if (periodiccnt)
814	{	1031	{
815	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1032	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
816	if (block > to) block = to;	1033	if (block > to) block = to;
817	}	1034	}
818		1035
819	if (block < 0.) block = 0.;	1036	if (block < 0.) block = 0.;
820	}	1037	}
821		1038
822	method_poll (block);	1039	method_poll (EV_A_ block);
823		1040
824	/* update ev_now, do magic */	1041	/* update rt_now, do magic */
825	time_update ();	1042	time_update (EV_A);
826		1043
827	/* queue pending timers and reschedule them */	1044	/* queue pending timers and reschedule them */
828	timers_reify (); /* relative timers called last */	1045	timers_reify (EV_A); /* relative timers called last */
829	periodics_reify (); /* absolute timers called first */	1046	periodics_reify (EV_A); /* absolute timers called first */
830		1047
831	/* queue idle watchers unless io or timers are pending */	1048	/* queue idle watchers unless io or timers are pending */
832	if (!pendingcnt)	1049	if (!pendingcnt)
833	queue_events ((W *)idles, idlecnt, EV_IDLE);	1050	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
834		1051
835	/* queue check watchers, to be executed first */	1052	/* queue check watchers, to be executed first */
836	if (checkcnt)	1053	if (checkcnt)
837	queue_events ((W *)checks, checkcnt, EV_CHECK);	1054	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
838		1055
839	call_pending ();	1056	call_pending (EV_A);
840	}	1057	}
841	while (!ev_loop_done);	1058	while (activecnt && !loop_done);
842		1059
843	if (ev_loop_done != 2)	1060	if (loop_done != 2)
844	ev_loop_done = 0;	1061	loop_done = 0;
		1062	}
		1063
		1064	void
		1065	ev_unloop (EV_P_ int how)
		1066	{
		1067	loop_done = how;
845	}	1068	}
846		1069
847	/*****************************************************************************/	1070	/*****************************************************************************/
848		1071
849	static void	1072	inline void
850	wlist_add (WL *head, WL elem)	1073	wlist_add (WL *head, WL elem)
851	{	1074	{
852	elem->next = *head;	1075	elem->next = *head;
853	*head = elem;	1076	*head = elem;
854	}	1077	}
855		1078
856	static void	1079	inline void
857	wlist_del (WL *head, WL elem)	1080	wlist_del (WL *head, WL elem)
858	{	1081	{
859	while (*head)	1082	while (*head)
860	{	1083	{
861	if (*head == elem)	1084	if (*head == elem)
…		…
866		1089
867	head = &(*head)->next;	1090	head = &(*head)->next;
868	}	1091	}
869	}	1092	}
870		1093
871	static void	1094	inline void
872	ev_clear_pending (W w)	1095	ev_clear_pending (EV_P_ W w)
873	{	1096	{
874	if (w->pending)	1097	if (w->pending)
875	{	1098	{
876	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1099	pendings [ABSPRI (w)][w->pending - 1].w = 0;
877	w->pending = 0;	1100	w->pending = 0;
878	}	1101	}
879	}	1102	}
880		1103
881	static void	1104	inline void
882	ev_start (W w, int active)	1105	ev_start (EV_P_ W w, int active)
883	{	1106	{
884	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1107	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
885	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1108	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
886		1109
887	w->active = active;	1110	w->active = active;
		1111	ev_ref (EV_A);
888	}	1112	}
889		1113
890	static void	1114	inline void
891	ev_stop (W w)	1115	ev_stop (EV_P_ W w)
892	{	1116	{
		1117	ev_unref (EV_A);
893	w->active = 0;	1118	w->active = 0;
894	}	1119	}
895		1120
896	/*****************************************************************************/	1121	/*****************************************************************************/
897		1122
898	void	1123	void
899	ev_io_start (struct ev_io *w)	1124	ev_io_start (EV_P_ struct ev_io *w)
900	{	1125	{
901	int fd = w->fd;	1126	int fd = w->fd;
902		1127
903	if (ev_is_active (w))	1128	if (ev_is_active (w))
904	return;	1129	return;
905		1130
906	assert (("ev_io_start called with negative fd", fd >= 0));	1131	assert (("ev_io_start called with negative fd", fd >= 0));
907		1132
908	ev_start ((W)w, 1);	1133	ev_start (EV_A_ (W)w, 1);
909	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1134	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
910	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1135	wlist_add ((WL *)&anfds[fd].head, (WL)w);
911		1136
912	fd_change (fd);	1137	fd_change (EV_A_ fd);
913	}	1138	}
914		1139
915	void	1140	void
916	ev_io_stop (struct ev_io *w)	1141	ev_io_stop (EV_P_ struct ev_io *w)
917	{	1142	{
918	ev_clear_pending ((W)w);	1143	ev_clear_pending (EV_A_ (W)w);
919	if (!ev_is_active (w))	1144	if (!ev_is_active (w))
920	return;	1145	return;
921		1146
922	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1147	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
923	ev_stop ((W)w);	1148	ev_stop (EV_A_ (W)w);
924		1149
925	fd_change (w->fd);	1150	fd_change (EV_A_ w->fd);
926	}	1151	}
927		1152
928	void	1153	void
929	ev_timer_start (struct ev_timer *w)	1154	ev_timer_start (EV_P_ struct ev_timer *w)
930	{	1155	{
931	if (ev_is_active (w))	1156	if (ev_is_active (w))
932	return;	1157	return;
933		1158
934	w->at += now;	1159	((WT)w)->at += mn_now;
935		1160
936	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1161	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
937		1162
938	ev_start ((W)w, ++timercnt);	1163	ev_start (EV_A_ (W)w, ++timercnt);
939	array_needsize (timers, timermax, timercnt, );	1164	array_needsize (timers, timermax, timercnt, );
940	timers [timercnt - 1] = w;	1165	timers [timercnt - 1] = w;
941	upheap ((WT *)timers, timercnt - 1);	1166	upheap ((WT *)timers, timercnt - 1);
942	}
943		1167
		1168	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1169	}
		1170
944	void	1171	void
945	ev_timer_stop (struct ev_timer *w)	1172	ev_timer_stop (EV_P_ struct ev_timer *w)
946	{	1173	{
947	ev_clear_pending ((W)w);	1174	ev_clear_pending (EV_A_ (W)w);
948	if (!ev_is_active (w))	1175	if (!ev_is_active (w))
949	return;	1176	return;
950		1177
		1178	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1179
951	if (w->active < timercnt--)	1180	if (((W)w)->active < timercnt--)
952	{	1181	{
953	timers [w->active - 1] = timers [timercnt];	1182	timers [((W)w)->active - 1] = timers [timercnt];
954	downheap ((WT *)timers, timercnt, w->active - 1);	1183	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
955	}	1184	}
956		1185
957	w->at = w->repeat;	1186	((WT)w)->at = w->repeat;
958		1187
959	ev_stop ((W)w);	1188	ev_stop (EV_A_ (W)w);
960	}	1189	}
961		1190
962	void	1191	void
963	ev_timer_again (struct ev_timer *w)	1192	ev_timer_again (EV_P_ struct ev_timer *w)
964	{	1193	{
965	if (ev_is_active (w))	1194	if (ev_is_active (w))
966	{	1195	{
967	if (w->repeat)	1196	if (w->repeat)
968	{	1197	{
969	w->at = now + w->repeat;	1198	((WT)w)->at = mn_now + w->repeat;
970	downheap ((WT *)timers, timercnt, w->active - 1);	1199	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
971	}	1200	}
972	else	1201	else
973	ev_timer_stop (w);	1202	ev_timer_stop (EV_A_ w);
974	}	1203	}
975	else if (w->repeat)	1204	else if (w->repeat)
976	ev_timer_start (w);	1205	ev_timer_start (EV_A_ w);
977	}	1206	}
978		1207
979	void	1208	void
980	ev_periodic_start (struct ev_periodic *w)	1209	ev_periodic_start (EV_P_ struct ev_periodic *w)
981	{	1210	{
982	if (ev_is_active (w))	1211	if (ev_is_active (w))
983	return;	1212	return;
984		1213
985	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1214	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
986		1215
987	/* this formula differs from the one in periodic_reify because we do not always round up */	1216	/* this formula differs from the one in periodic_reify because we do not always round up */
988	if (w->interval)	1217	if (w->interval)
989	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1218	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
990		1219
991	ev_start ((W)w, ++periodiccnt);	1220	ev_start (EV_A_ (W)w, ++periodiccnt);
992	array_needsize (periodics, periodicmax, periodiccnt, );	1221	array_needsize (periodics, periodicmax, periodiccnt, );
993	periodics [periodiccnt - 1] = w;	1222	periodics [periodiccnt - 1] = w;
994	upheap ((WT *)periodics, periodiccnt - 1);	1223	upheap ((WT *)periodics, periodiccnt - 1);
995	}
996		1224
		1225	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1226	}
		1227
997	void	1228	void
998	ev_periodic_stop (struct ev_periodic *w)	1229	ev_periodic_stop (EV_P_ struct ev_periodic *w)
999	{	1230	{
1000	ev_clear_pending ((W)w);	1231	ev_clear_pending (EV_A_ (W)w);
1001	if (!ev_is_active (w))	1232	if (!ev_is_active (w))
1002	return;	1233	return;
1003		1234
		1235	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1236
1004	if (w->active < periodiccnt--)	1237	if (((W)w)->active < periodiccnt--)
1005	{	1238	{
1006	periodics [w->active - 1] = periodics [periodiccnt];	1239	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1007	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1240	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1008	}	1241	}
1009		1242
1010	ev_stop ((W)w);	1243	ev_stop (EV_A_ (W)w);
1011	}	1244	}
1012		1245
1013	void	1246	void
1014	ev_signal_start (struct ev_signal *w)	1247	ev_idle_start (EV_P_ struct ev_idle *w)
1015	{	1248	{
1016	if (ev_is_active (w))	1249	if (ev_is_active (w))
1017	return;	1250	return;
1018		1251
		1252	ev_start (EV_A_ (W)w, ++idlecnt);
		1253	array_needsize (idles, idlemax, idlecnt, );
		1254	idles [idlecnt - 1] = w;
		1255	}
		1256
		1257	void
		1258	ev_idle_stop (EV_P_ struct ev_idle *w)
		1259	{
		1260	ev_clear_pending (EV_A_ (W)w);
		1261	if (ev_is_active (w))
		1262	return;
		1263
		1264	idles [((W)w)->active - 1] = idles [--idlecnt];
		1265	ev_stop (EV_A_ (W)w);
		1266	}
		1267
		1268	void
		1269	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1270	{
		1271	if (ev_is_active (w))
		1272	return;
		1273
		1274	ev_start (EV_A_ (W)w, ++preparecnt);
		1275	array_needsize (prepares, preparemax, preparecnt, );
		1276	prepares [preparecnt - 1] = w;
		1277	}
		1278
		1279	void
		1280	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1281	{
		1282	ev_clear_pending (EV_A_ (W)w);
		1283	if (ev_is_active (w))
		1284	return;
		1285
		1286	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1287	ev_stop (EV_A_ (W)w);
		1288	}
		1289
		1290	void
		1291	ev_check_start (EV_P_ struct ev_check *w)
		1292	{
		1293	if (ev_is_active (w))
		1294	return;
		1295
		1296	ev_start (EV_A_ (W)w, ++checkcnt);
		1297	array_needsize (checks, checkmax, checkcnt, );
		1298	checks [checkcnt - 1] = w;
		1299	}
		1300
		1301	void
		1302	ev_check_stop (EV_P_ struct ev_check *w)
		1303	{
		1304	ev_clear_pending (EV_A_ (W)w);
		1305	if (ev_is_active (w))
		1306	return;
		1307
		1308	checks [((W)w)->active - 1] = checks [--checkcnt];
		1309	ev_stop (EV_A_ (W)w);
		1310	}
		1311
		1312	#ifndef SA_RESTART
		1313	# define SA_RESTART 0
		1314	#endif
		1315
		1316	void
		1317	ev_signal_start (EV_P_ struct ev_signal *w)
		1318	{
		1319	#if EV_MULTIPLICITY
		1320	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1321	#endif
		1322	if (ev_is_active (w))
		1323	return;
		1324
1019	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1325	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1020		1326
1021	ev_start ((W)w, 1);	1327	ev_start (EV_A_ (W)w, 1);
1022	array_needsize (signals, signalmax, w->signum, signals_init);	1328	array_needsize (signals, signalmax, w->signum, signals_init);
1023	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1329	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1024		1330
1025	if (!w->next)	1331	if (!((WL)w)->next)
1026	{	1332	{
		1333	#if WIN32
		1334	signal (w->signum, sighandler);
		1335	#else
1027	struct sigaction sa;	1336	struct sigaction sa;
1028	sa.sa_handler = sighandler;	1337	sa.sa_handler = sighandler;
1029	sigfillset (&sa.sa_mask);	1338	sigfillset (&sa.sa_mask);
1030	sa.sa_flags = 0;	1339	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1031	sigaction (w->signum, &sa, 0);	1340	sigaction (w->signum, &sa, 0);
		1341	#endif
1032	}	1342	}
1033	}	1343	}
1034		1344
1035	void	1345	void
1036	ev_signal_stop (struct ev_signal *w)	1346	ev_signal_stop (EV_P_ struct ev_signal *w)
1037	{	1347	{
1038	ev_clear_pending ((W)w);	1348	ev_clear_pending (EV_A_ (W)w);
1039	if (!ev_is_active (w))	1349	if (!ev_is_active (w))
1040	return;	1350	return;
1041		1351
1042	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1352	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1043	ev_stop ((W)w);	1353	ev_stop (EV_A_ (W)w);
1044		1354
1045	if (!signals [w->signum - 1].head)	1355	if (!signals [w->signum - 1].head)
1046	signal (w->signum, SIG_DFL);	1356	signal (w->signum, SIG_DFL);
1047	}	1357	}
1048		1358
1049	void	1359	void
1050	ev_idle_start (struct ev_idle *w)	1360	ev_child_start (EV_P_ struct ev_child *w)
1051	{	1361	{
		1362	#if EV_MULTIPLICITY
		1363	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1364	#endif
1052	if (ev_is_active (w))	1365	if (ev_is_active (w))
1053	return;	1366	return;
1054		1367
1055	ev_start ((W)w, ++idlecnt);	1368	ev_start (EV_A_ (W)w, 1);
1056	array_needsize (idles, idlemax, idlecnt, );	1369	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1057	idles [idlecnt - 1] = w;
1058	}	1370	}
1059		1371
1060	void	1372	void
1061	ev_idle_stop (struct ev_idle *w)	1373	ev_child_stop (EV_P_ struct ev_child *w)
1062	{	1374	{
1063	ev_clear_pending ((W)w);	1375	ev_clear_pending (EV_A_ (W)w);
1064	if (ev_is_active (w))	1376	if (ev_is_active (w))
1065	return;	1377	return;
1066		1378
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);	1379	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1133	ev_stop ((W)w);	1380	ev_stop (EV_A_ (W)w);
1134	}	1381	}
1135		1382
1136	/*****************************************************************************/	1383	/*****************************************************************************/
1137		1384
1138	struct ev_once	1385	struct ev_once
…		…
1142	void (*cb)(int revents, void *arg);	1389	void (*cb)(int revents, void *arg);
1143	void *arg;	1390	void *arg;
1144	};	1391	};
1145		1392
1146	static void	1393	static void
1147	once_cb (struct ev_once *once, int revents)	1394	once_cb (EV_P_ struct ev_once *once, int revents)
1148	{	1395	{
1149	void (*cb)(int revents, void *arg) = once->cb;	1396	void (*cb)(int revents, void *arg) = once->cb;
1150	void *arg = once->arg;	1397	void *arg = once->arg;
1151		1398
1152	ev_io_stop (&once->io);	1399	ev_io_stop (EV_A_ &once->io);
1153	ev_timer_stop (&once->to);	1400	ev_timer_stop (EV_A_ &once->to);
1154	free (once);	1401	free (once);
1155		1402
1156	cb (revents, arg);	1403	cb (revents, arg);
1157	}	1404	}
1158		1405
1159	static void	1406	static void
1160	once_cb_io (struct ev_io *w, int revents)	1407	once_cb_io (EV_P_ struct ev_io *w, int revents)
1161	{	1408	{
1162	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1409	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1163	}	1410	}
1164		1411
1165	static void	1412	static void
1166	once_cb_to (struct ev_timer *w, int revents)	1413	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1167	{	1414	{
1168	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1415	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1169	}	1416	}
1170		1417
1171	void	1418	void
1172	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1419	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1173	{	1420	{
1174	struct ev_once *once = malloc (sizeof (struct ev_once));	1421	struct ev_once *once = malloc (sizeof (struct ev_once));
1175		1422
1176	if (!once)	1423	if (!once)
1177	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1424	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
…		…
1182		1429
1183	ev_watcher_init (&once->io, once_cb_io);	1430	ev_watcher_init (&once->io, once_cb_io);
1184	if (fd >= 0)	1431	if (fd >= 0)
1185	{	1432	{
1186	ev_io_set (&once->io, fd, events);	1433	ev_io_set (&once->io, fd, events);
1187	ev_io_start (&once->io);	1434	ev_io_start (EV_A_ &once->io);
1188	}	1435	}
1189		1436
1190	ev_watcher_init (&once->to, once_cb_to);	1437	ev_watcher_init (&once->to, once_cb_to);
1191	if (timeout >= 0.)	1438	if (timeout >= 0.)
1192	{	1439	{
1193	ev_timer_set (&once->to, timeout, 0.);	1440	ev_timer_set (&once->to, timeout, 0.);
1194	ev_timer_start (&once->to);	1441	ev_timer_start (EV_A_ &once->to);
1195	}	1442	}
1196	}	1443	}
1197	}	1444	}
1198		1445
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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