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Comparing libev/ev.c (file contents):
Revision 1.42 by root, Fri Nov 2 20:05:05 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>
…		…
42	#include <stdio.h>	64	#include <stdio.h>
43		65
44	#include <assert.h>	66	#include <assert.h>
45	#include <errno.h>	67	#include <errno.h>
46	#include <sys/types.h>	68	#include <sys/types.h>
		69	#ifndef WIN32
47	#include <sys/wait.h>	70	# include <sys/wait.h>
		71	#endif
48	#include <sys/time.h>	72	#include <sys/time.h>
49	#include <time.h>	73	#include <time.h>
50		74
51	/**/	75	/**/
52		76
…		…
62	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	86	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
63	#endif	87	#endif
64		88
65	#ifndef EV_USE_EPOLL	89	#ifndef EV_USE_EPOLL
66	# define EV_USE_EPOLL 0	90	# define EV_USE_EPOLL 0
		91	#endif
		92
		93	#ifndef EV_USE_KQUEUE
		94	# define EV_USE_KQUEUE 0
		95	#endif
		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
67	#endif	103	#endif
68		104
69	#ifndef EV_USE_REALTIME	105	#ifndef EV_USE_REALTIME
70	# define EV_USE_REALTIME 1	106	# define EV_USE_REALTIME 1
71	#endif	107	#endif
…		…
107		143
108	typedef struct ev_watcher *W;	144	typedef struct ev_watcher *W;
109	typedef struct ev_watcher_list *WL;	145	typedef struct ev_watcher_list *WL;
110	typedef struct ev_watcher_time *WT;	146	typedef struct ev_watcher_time *WT;
111		147
112	static ev_tstamp now_floor, now, diff; /* monotonic clock */	148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
113	ev_tstamp ev_now;
114	int ev_method;
115		149
116	static int have_monotonic; /* runtime */	150	#if WIN32
117		151	/* note: the comment below could not be substantiated, but what would I care */
118	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	152	/* MSDN says this is required to handle SIGFPE */
119	static void (*method_modify)(int fd, int oev, int nev);	153	volatile double SIGFPE_REQ = 0.0f;
120	static void (*method_poll)(ev_tstamp timeout);	154	#endif
121		155
122	/*****************************************************************************/	156	/*****************************************************************************/
123		157
124	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
125	ev_time (void)	192	ev_time (void)
126	{	193	{
127	#if EV_USE_REALTIME	194	#if EV_USE_REALTIME
128	struct timespec ts;	195	struct timespec ts;
129	clock_gettime (CLOCK_REALTIME, &ts);	196	clock_gettime (CLOCK_REALTIME, &ts);
…		…
133	gettimeofday (&tv, 0);	200	gettimeofday (&tv, 0);
134	return tv.tv_sec + tv.tv_usec * 1e-6;	201	return tv.tv_sec + tv.tv_usec * 1e-6;
135	#endif	202	#endif
136	}	203	}
137		204
138	static ev_tstamp	205	inline ev_tstamp
139	get_clock (void)	206	get_clock (void)
140	{	207	{
141	#if EV_USE_MONOTONIC	208	#if EV_USE_MONOTONIC
142	if (expect_true (have_monotonic))	209	if (expect_true (have_monotonic))
143	{	210	{
…		…
146	return ts.tv_sec + ts.tv_nsec * 1e-9;	213	return ts.tv_sec + ts.tv_nsec * 1e-9;
147	}	214	}
148	#endif	215	#endif
149		216
150	return ev_time ();	217	return ev_time ();
		218	}
		219
		220	ev_tstamp
		221	ev_now (EV_P)
		222	{
		223	return rt_now;
151	}	224	}
152		225
153	#define array_roundsize(base,n) ((n) | 4 & ~3)	226	#define array_roundsize(base,n) ((n) | 4 & ~3)
154		227
155	#define array_needsize(base,cur,cnt,init) \	228	#define array_needsize(base,cur,cnt,init) \
…		…
165	base = realloc (base, sizeof (*base) * (newcnt)); \	238	base = realloc (base, sizeof (*base) * (newcnt)); \
166	init (base + cur, newcnt - cur); \	239	init (base + cur, newcnt - cur); \
167	cur = newcnt; \	240	cur = newcnt; \
168	}	241	}
169		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
170	/*****************************************************************************/	254	/*****************************************************************************/
171
172	typedef struct
173	{
174	struct ev_io *head;
175	unsigned char events;
176	unsigned char reify;
177	} ANFD;
178
179	static ANFD *anfds;
180	static int anfdmax;
181		255
182	static void	256	static void
183	anfds_init (ANFD *base, int count)	257	anfds_init (ANFD *base, int count)
184	{	258	{
185	while (count--)	259	while (count--)
…		…
190		264
191	++base;	265	++base;
192	}	266	}
193	}	267	}
194		268
195	typedef struct
196	{
197	W w;
198	int events;
199	} ANPENDING;
200
201	static ANPENDING *pendings [NUMPRI];
202	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
203
204	static void	269	static void
205	event (W w, int events)	270	event (EV_P_ W w, int events)
206	{	271	{
207	if (w->pending)	272	if (w->pending)
208	{	273	{
209	pendings [ABSPRI (w)][w->pending - 1].events |= events;	274	pendings [ABSPRI (w)][w->pending - 1].events |= events;
210	return;	275	return;
…		…
215	pendings [ABSPRI (w)][w->pending - 1].w = w;	280	pendings [ABSPRI (w)][w->pending - 1].w = w;
216	pendings [ABSPRI (w)][w->pending - 1].events = events;	281	pendings [ABSPRI (w)][w->pending - 1].events = events;
217	}	282	}
218		283
219	static void	284	static void
220	queue_events (W *events, int eventcnt, int type)	285	queue_events (EV_P_ W *events, int eventcnt, int type)
221	{	286	{
222	int i;	287	int i;
223		288
224	for (i = 0; i < eventcnt; ++i)	289	for (i = 0; i < eventcnt; ++i)
225	event (events [i], type);	290	event (EV_A_ events [i], type);
226	}	291	}
227		292
228	static void	293	static void
229	fd_event (int fd, int events)	294	fd_event (EV_P_ int fd, int events)
230	{	295	{
231	ANFD *anfd = anfds + fd;	296	ANFD *anfd = anfds + fd;
232	struct ev_io *w;	297	struct ev_io *w;
233		298
234	for (w = anfd->head; w; w = w->next)	299	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
235	{	300	{
236	int ev = w->events & events;	301	int ev = w->events & events;
237		302
238	if (ev)	303	if (ev)
239	event ((W)w, ev);	304	event (EV_A_ (W)w, ev);
240	}	305	}
241	}	306	}
242		307
243	/*****************************************************************************/	308	/*****************************************************************************/
244		309
245	static int *fdchanges;
246	static int fdchangemax, fdchangecnt;
247
248	static void	310	static void
249	fd_reify (void)	311	fd_reify (EV_P)
250	{	312	{
251	int i;	313	int i;
252		314
253	for (i = 0; i < fdchangecnt; ++i)	315	for (i = 0; i < fdchangecnt; ++i)
254	{	316	{
…		…
256	ANFD *anfd = anfds + fd;	318	ANFD *anfd = anfds + fd;
257	struct ev_io *w;	319	struct ev_io *w;
258		320
259	int events = 0;	321	int events = 0;
260		322
261	for (w = anfd->head; w; w = w->next)	323	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
262	events |= w->events;	324	events |= w->events;
263		325
264	anfd->reify = 0;	326	anfd->reify = 0;
265		327
266	if (anfd->events != events)
267	{
268	method_modify (fd, anfd->events, events);	328	method_modify (EV_A_ fd, anfd->events, events);
269	anfd->events = events;	329	anfd->events = events;
270	}
271	}	330	}
272		331
273	fdchangecnt = 0;	332	fdchangecnt = 0;
274	}	333	}
275		334
276	static void	335	static void
277	fd_change (int fd)	336	fd_change (EV_P_ int fd)
278	{	337	{
279	if (anfds [fd].reify || fdchangecnt < 0)	338	if (anfds [fd].reify || fdchangecnt < 0)
280	return;	339	return;
281		340
282	anfds [fd].reify = 1;	341	anfds [fd].reify = 1;
…		…
285	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	344	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
286	fdchanges [fdchangecnt - 1] = fd;	345	fdchanges [fdchangecnt - 1] = fd;
287	}	346	}
288		347
289	static void	348	static void
290	fd_kill (int fd)	349	fd_kill (EV_P_ int fd)
291	{	350	{
292	struct ev_io *w;	351	struct ev_io *w;
293		352
294	printf ("killing fd %d\n", fd);//D
295	while ((w = anfds [fd].head))	353	while ((w = (struct ev_io *)anfds [fd].head))
296	{	354	{
297	ev_io_stop (w);	355	ev_io_stop (EV_A_ w);
298	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	356	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
299	}	357	}
300	}	358	}
301		359
302	/* called on EBADF to verify fds */	360	/* called on EBADF to verify fds */
303	static void	361	static void
304	fd_ebadf (void)	362	fd_ebadf (EV_P)
305	{	363	{
306	int fd;	364	int fd;
307		365
308	for (fd = 0; fd < anfdmax; ++fd)	366	for (fd = 0; fd < anfdmax; ++fd)
309	if (anfds [fd].events)	367	if (anfds [fd].events)
310	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	368	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
311	fd_kill (fd);	369	fd_kill (EV_A_ fd);
312	}	370	}
313		371
314	/* 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 */
315	static void	373	static void
316	fd_enomem (void)	374	fd_enomem (EV_P)
317	{	375	{
318	int fd = anfdmax;	376	int fd;
319		377
320	while (fd--)	378	for (fd = anfdmax; fd--; )
321	if (anfds [fd].events)	379	if (anfds [fd].events)
322	{	380	{
323	close (fd);	381	close (fd);
324	fd_kill (fd);	382	fd_kill (EV_A_ fd);
325	return;	383	return;
326	}	384	}
327	}	385	}
328		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
329	/*****************************************************************************/	402	/*****************************************************************************/
330		403
331	static struct ev_timer **timers;
332	static int timermax, timercnt;
333
334	static struct ev_periodic **periodics;
335	static int periodicmax, periodiccnt;
336
337	static void	404	static void
338	upheap (WT *timers, int k)	405	upheap (WT *heap, int k)
339	{	406	{
340	WT w = timers [k];	407	WT w = heap [k];
341		408
342	while (k && timers [k >> 1]->at > w->at)	409	while (k && heap [k >> 1]->at > w->at)
343	{	410	{
344	timers [k] = timers [k >> 1];	411	heap [k] = heap [k >> 1];
345	timers [k]->active = k + 1;	412	((W)heap [k])->active = k + 1;
346	k >>= 1;	413	k >>= 1;
347	}	414	}
348		415
349	timers [k] = w;	416	heap [k] = w;
350	timers [k]->active = k + 1;	417	((W)heap [k])->active = k + 1;
351		418
352	}	419	}
353		420
354	static void	421	static void
355	downheap (WT *timers, int N, int k)	422	downheap (WT *heap, int N, int k)
356	{	423	{
357	WT w = timers [k];	424	WT w = heap [k];
358		425
359	while (k < (N >> 1))	426	while (k < (N >> 1))
360	{	427	{
361	int j = k << 1;	428	int j = k << 1;
362		429
363	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	430	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
364	++j;	431	++j;
365		432
366	if (w->at <= timers [j]->at)	433	if (w->at <= heap [j]->at)
367	break;	434	break;
368		435
369	timers [k] = timers [j];	436	heap [k] = heap [j];
370	timers [k]->active = k + 1;	437	((W)heap [k])->active = k + 1;
371	k = j;	438	k = j;
372	}	439	}
373		440
374	timers [k] = w;	441	heap [k] = w;
375	timers [k]->active = k + 1;	442	((W)heap [k])->active = k + 1;
376	}	443	}
377		444
378	/*****************************************************************************/	445	/*****************************************************************************/
379		446
380	typedef struct	447	typedef struct
381	{	448	{
382	struct ev_signal *head;	449	struct ev_watcher_list *head;
383	sig_atomic_t volatile gotsig;	450	sig_atomic_t volatile gotsig;
384	} ANSIG;	451	} ANSIG;
385		452
386	static ANSIG *signals;	453	static ANSIG *signals;
387	static int signalmax;	454	static int signalmax;
…		…
403	}	470	}
404		471
405	static void	472	static void
406	sighandler (int signum)	473	sighandler (int signum)
407	{	474	{
		475	#if WIN32
		476	signal (signum, sighandler);
		477	#endif
		478
408	signals [signum - 1].gotsig = 1;	479	signals [signum - 1].gotsig = 1;
409		480
410	if (!gotsig)	481	if (!gotsig)
411	{	482	{
		483	int old_errno = errno;
412	gotsig = 1;	484	gotsig = 1;
413	write (sigpipe [1], &signum, 1);	485	write (sigpipe [1], &signum, 1);
		486	errno = old_errno;
414	}	487	}
415	}	488	}
416		489
417	static void	490	static void
418	sigcb (struct ev_io *iow, int revents)	491	sigcb (EV_P_ struct ev_io *iow, int revents)
419	{	492	{
420	struct ev_signal *w;	493	struct ev_watcher_list *w;
421	int signum;	494	int signum;
422		495
423	read (sigpipe [0], &revents, 1);	496	read (sigpipe [0], &revents, 1);
424	gotsig = 0;	497	gotsig = 0;
425		498
…		…
427	if (signals [signum].gotsig)	500	if (signals [signum].gotsig)
428	{	501	{
429	signals [signum].gotsig = 0;	502	signals [signum].gotsig = 0;
430		503
431	for (w = signals [signum].head; w; w = w->next)	504	for (w = signals [signum].head; w; w = w->next)
432	event ((W)w, EV_SIGNAL);	505	event (EV_A_ (W)w, EV_SIGNAL);
433	}	506	}
434	}	507	}
435		508
436	static void	509	static void
437	siginit (void)	510	siginit (EV_P)
438	{	511	{
		512	#ifndef WIN32
439	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	513	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
440	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	514	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
441		515
442	/* rather than sort out wether we really need nb, set it */	516	/* rather than sort out wether we really need nb, set it */
443	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	517	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
444	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	518	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		519	#endif
445		520
446	ev_io_set (&sigev, sigpipe [0], EV_READ);	521	ev_io_set (&sigev, sigpipe [0], EV_READ);
447	ev_io_start (&sigev);	522	ev_io_start (EV_A_ &sigev);
		523	ev_unref (EV_A); /* child watcher should not keep loop alive */
448	}	524	}
449		525
450	/*****************************************************************************/	526	/*****************************************************************************/
451		527
452	static struct ev_idle **idles;	528	#ifndef WIN32
453	static int idlemax, idlecnt;
454
455	static struct ev_prepare **prepares;
456	static int preparemax, preparecnt;
457
458	static struct ev_check **checks;
459	static int checkmax, checkcnt;
460
461	/*****************************************************************************/
462		529
463	static struct ev_child *childs [PID_HASHSIZE];	530	static struct ev_child *childs [PID_HASHSIZE];
464	static struct ev_signal childev;	531	static struct ev_signal childev;
465		532
466	#ifndef WCONTINUED	533	#ifndef WCONTINUED
467	# define WCONTINUED 0	534	# define WCONTINUED 0
468	#endif	535	#endif
469		536
470	static void	537	static void
471	childcb (struct ev_signal *sw, int revents)	538	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
472	{	539	{
473	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	{
474	int pid, status;	555	int pid, status;
475		556
476	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	557	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
477	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	558	{
478	if (w->pid == pid || !w->pid)	559	/* make sure we are called again until all childs have been reaped */
479	{	560	event (EV_A_ (W)sw, EV_SIGNAL);
480	w->status = status;	561
481	event ((W)w, EV_CHILD);	562	child_reap (EV_A_ sw, pid, pid, status);
482	}	563	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		564	}
483	}	565	}
		566
		567	#endif
484		568
485	/*****************************************************************************/	569	/*****************************************************************************/
486		570
		571	#if EV_USE_KQUEUE
		572	# include "ev_kqueue.c"
		573	#endif
487	#if EV_USE_EPOLL	574	#if EV_USE_EPOLL
488	# include "ev_epoll.c"	575	# include "ev_epoll.c"
489	#endif	576	#endif
490	#if EV_USE_POLL	577	#if EV_USE_POLL
491	# include "ev_poll.c"	578	# include "ev_poll.c"
…		…
504	ev_version_minor (void)	591	ev_version_minor (void)
505	{	592	{
506	return EV_VERSION_MINOR;	593	return EV_VERSION_MINOR;
507	}	594	}
508		595
509	/* 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 */
510	static int	597	static int
511	enable_secure ()	598	enable_secure (void)
512	{	599	{
		600	#ifdef WIN32
		601	return 0;
		602	#else
513	return getuid () != geteuid ()	603	return getuid () != geteuid ()
514	|| getgid () != getegid ();	604	|| getgid () != getegid ();
		605	#endif
515	}	606	}
516		607
517	int ev_init (int methods)	608	int
		609	ev_method (EV_P)
518	{	610	{
		611	return method;
		612	}
		613
		614	static void
		615	loop_init (EV_P_ int methods)
		616	{
519	if (!ev_method)	617	if (!method)
520	{	618	{
521	#if EV_USE_MONOTONIC	619	#if EV_USE_MONOTONIC
522	{	620	{
523	struct timespec ts;	621	struct timespec ts;
524	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	622	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
525	have_monotonic = 1;	623	have_monotonic = 1;
526	}	624	}
527	#endif	625	#endif
528		626
529	ev_now = ev_time ();	627	rt_now = ev_time ();
530	now = get_clock ();	628	mn_now = get_clock ();
531	now_floor = now;	629	now_floor = mn_now;
532	diff = ev_now - now;	630	rtmn_diff = rt_now - mn_now;
533
534	if (pipe (sigpipe))
535	return 0;
536		631
537	if (methods == EVMETHOD_AUTO)	632	if (methods == EVMETHOD_AUTO)
538	if (!enable_secure () && getenv ("LIBEV_METHODS"))	633	if (!enable_secure () && getenv ("LIBEV_METHODS"))
539	methods = atoi (getenv ("LIBEV_METHODS"));	634	methods = atoi (getenv ("LIBEV_METHODS"));
540	else	635	else
541	methods = EVMETHOD_ANY;	636	methods = EVMETHOD_ANY;
542		637
543	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
		642	#if EV_USE_KQUEUE
		643	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		644	#endif
544	#if EV_USE_EPOLL	645	#if EV_USE_EPOLL
545	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	646	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
546	#endif	647	#endif
547	#if EV_USE_POLL	648	#if EV_USE_POLL
548	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	649	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
549	#endif	650	#endif
550	#if EV_USE_SELECT	651	#if EV_USE_SELECT
551	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	652	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
552	#endif	653	#endif
		654	}
		655	}
553		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
554	if (ev_method)	759	if (ev_method (EV_A))
555	{	760	{
556	ev_watcher_init (&sigev, sigcb);	761	ev_watcher_init (&sigev, sigcb);
		762	ev_set_priority (&sigev, EV_MAXPRI);
557	siginit ();	763	siginit (EV_A);
558		764
		765	#ifndef WIN32
559	ev_signal_init (&childev, childcb, SIGCHLD);	766	ev_signal_init (&childev, childcb, SIGCHLD);
		767	ev_set_priority (&childev, EV_MAXPRI);
560	ev_signal_start (&childev);	768	ev_signal_start (EV_A_ &childev);
		769	ev_unref (EV_A); /* child watcher should not keep loop alive */
		770	#endif
561	}	771	}
		772	else
		773	default_loop = 0;
562	}	774	}
563		775
564	return ev_method;	776	return default_loop;
565	}	777	}
566		778
567	/*****************************************************************************/
568
569	void	779	void
570	ev_fork_prepare (void)	780	ev_default_destroy (void)
571	{	781	{
572	/* nop */	782	#if EV_MULTIPLICITY
573	}	783	struct ev_loop *loop = default_loop;
574
575	void
576	ev_fork_parent (void)
577	{
578	/* nop */
579	}
580
581	void
582	ev_fork_child (void)
583	{
584	#if EV_USE_EPOLL
585	if (ev_method == EVMETHOD_EPOLL)
586	epoll_postfork_child ();
587	#endif	784	#endif
588		785
		786	ev_ref (EV_A); /* child watcher */
		787	ev_signal_stop (EV_A_ &childev);
		788
		789	ev_ref (EV_A); /* signal watcher */
589	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);
590	close (sigpipe [0]);	808	close (sigpipe [0]);
591	close (sigpipe [1]);	809	close (sigpipe [1]);
592	pipe (sigpipe);	810	pipe (sigpipe);
		811
		812	ev_ref (EV_A); /* signal watcher */
593	siginit ();	813	siginit (EV_A);
594	}	814	}
595		815
596	/*****************************************************************************/	816	/*****************************************************************************/
597		817
598	static void	818	static void
599	call_pending (void)	819	call_pending (EV_P)
600	{	820	{
601	int pri;	821	int pri;
602		822
603	for (pri = NUMPRI; pri--; )	823	for (pri = NUMPRI; pri--; )
604	while (pendingcnt [pri])	824	while (pendingcnt [pri])
…		…
606	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	826	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
607		827
608	if (p->w)	828	if (p->w)
609	{	829	{
610	p->w->pending = 0;	830	p->w->pending = 0;
611	p->w->cb (p->w, p->events);	831	p->w->cb (EV_A_ p->w, p->events);
612	}	832	}
613	}	833	}
614	}	834	}
615		835
616	static void	836	static void
617	timers_reify (void)	837	timers_reify (EV_P)
618	{	838	{
619	while (timercnt && timers [0]->at <= now)	839	while (timercnt && ((WT)timers [0])->at <= mn_now)
620	{	840	{
621	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)));
622		844
623	/* first reschedule or stop timer */	845	/* first reschedule or stop timer */
624	if (w->repeat)	846	if (w->repeat)
625	{	847	{
626	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.));
627	w->at = now + w->repeat;	849	((WT)w)->at = mn_now + w->repeat;
628	downheap ((WT *)timers, timercnt, 0);	850	downheap ((WT *)timers, timercnt, 0);
629	}	851	}
630	else	852	else
631	ev_timer_stop (w); /* nonrepeating: stop timer */	853	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
632		854
633	event ((W)w, EV_TIMEOUT);	855	event (EV_A_ (W)w, EV_TIMEOUT);
634	}	856	}
635	}	857	}
636		858
637	static void	859	static void
638	periodics_reify (void)	860	periodics_reify (EV_P)
639	{	861	{
640	while (periodiccnt && periodics [0]->at <= ev_now)	862	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
641	{	863	{
642	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)));
643		867
644	/* first reschedule or stop timer */	868	/* first reschedule or stop timer */
645	if (w->interval)	869	if (w->interval)
646	{	870	{
647	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;
648	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));
649	downheap ((WT *)periodics, periodiccnt, 0);	873	downheap ((WT *)periodics, periodiccnt, 0);
650	}	874	}
651	else	875	else
652	ev_periodic_stop (w); /* nonrepeating: stop timer */	876	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
653		877
654	event ((W)w, EV_PERIODIC);	878	event (EV_A_ (W)w, EV_PERIODIC);
655	}	879	}
656	}	880	}
657		881
658	static void	882	static void
659	periodics_reschedule (ev_tstamp diff)	883	periodics_reschedule (EV_P)
660	{	884	{
661	int i;	885	int i;
662		886
663	/* adjust periodics after time jump */	887	/* adjust periodics after time jump */
664	for (i = 0; i < periodiccnt; ++i)	888	for (i = 0; i < periodiccnt; ++i)
665	{	889	{
666	struct ev_periodic *w = periodics [i];	890	struct ev_periodic *w = periodics [i];
667		891
668	if (w->interval)	892	if (w->interval)
669	{	893	{
670	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;
671		895
672	if (fabs (diff) >= 1e-4)	896	if (fabs (diff) >= 1e-4)
673	{	897	{
674	ev_periodic_stop (w);	898	ev_periodic_stop (EV_A_ w);
675	ev_periodic_start (w);	899	ev_periodic_start (EV_A_ w);
676		900
677	i = 0; /* restart loop, inefficient, but time jumps should be rare */	901	i = 0; /* restart loop, inefficient, but time jumps should be rare */
678	}	902	}
679	}	903	}
680	}	904	}
681	}	905	}
682		906
683	static int	907	inline int
684	time_update_monotonic (void)	908	time_update_monotonic (EV_P)
685	{	909	{
686	now = get_clock ();	910	mn_now = get_clock ();
687		911
688	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	912	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
689	{	913	{
690	ev_now = now + diff;	914	rt_now = rtmn_diff + mn_now;
691	return 0;	915	return 0;
692	}	916	}
693	else	917	else
694	{	918	{
695	now_floor = now;	919	now_floor = mn_now;
696	ev_now = ev_time ();	920	rt_now = ev_time ();
697	return 1;	921	return 1;
698	}	922	}
699	}	923	}
700		924
701	static void	925	static void
702	time_update (void)	926	time_update (EV_P)
703	{	927	{
704	int i;	928	int i;
705		929
706	#if EV_USE_MONOTONIC	930	#if EV_USE_MONOTONIC
707	if (expect_true (have_monotonic))	931	if (expect_true (have_monotonic))
708	{	932	{
709	if (time_update_monotonic ())	933	if (time_update_monotonic (EV_A))
710	{	934	{
711	ev_tstamp odiff = diff;	935	ev_tstamp odiff = rtmn_diff;
712		936
713	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 */
714	{	938	{
715	diff = ev_now - now;	939	rtmn_diff = rt_now - mn_now;
716		940
717	if (fabs (odiff - diff) < MIN_TIMEJUMP)	941	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
718	return; /* all is well */	942	return; /* all is well */
719		943
720	ev_now = ev_time ();	944	rt_now = ev_time ();
721	now = get_clock ();	945	mn_now = get_clock ();
722	now_floor = now;	946	now_floor = mn_now;
723	}	947	}
724		948
725	periodics_reschedule (diff - odiff);	949	periodics_reschedule (EV_A);
726	/* 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) */
727	}	952	}
728	}	953	}
729	else	954	else
730	#endif	955	#endif
731	{	956	{
732	ev_now = ev_time ();	957	rt_now = ev_time ();
733		958
734	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))
735	{	960	{
736	periodics_reschedule (ev_now - now);	961	periodics_reschedule (EV_A);
737		962
738	/* 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 */
739	for (i = 0; i < timercnt; ++i)	964	for (i = 0; i < timercnt; ++i)
740	timers [i]->at += diff;	965	((WT)timers [i])->at += rt_now - mn_now;
741	}	966	}
742		967
743	now = ev_now;	968	mn_now = rt_now;
744	}	969	}
745	}	970	}
746		971
747	int ev_loop_done;	972	void
		973	ev_ref (EV_P)
		974	{
		975	++activecnt;
		976	}
748		977
		978	void
		979	ev_unref (EV_P)
		980	{
		981	--activecnt;
		982	}
		983
		984	static int loop_done;
		985
		986	void
749	void ev_loop (int flags)	987	ev_loop (EV_P_ int flags)
750	{	988	{
751	double block;	989	double block;
752	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	990	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
753		991
754	do	992	do
755	{	993	{
756	/* queue check watchers (and execute them) */	994	/* queue check watchers (and execute them) */
757	if (expect_false (preparecnt))	995	if (expect_false (preparecnt))
758	{	996	{
759	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	997	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
760	call_pending ();	998	call_pending (EV_A);
761	}	999	}
762		1000
763	/* update fd-related kernel structures */	1001	/* update fd-related kernel structures */
764	fd_reify ();	1002	fd_reify (EV_A);
765		1003
766	/* calculate blocking time */	1004	/* calculate blocking time */
767		1005
768	/* 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
769	always have timers, we just calculate it always */	1007	always have timers, we just calculate it always */
770	#if EV_USE_MONOTONIC	1008	#if EV_USE_MONOTONIC
771	if (expect_true (have_monotonic))	1009	if (expect_true (have_monotonic))
772	time_update_monotonic ();	1010	time_update_monotonic (EV_A);
773	else	1011	else
774	#endif	1012	#endif
775	{	1013	{
776	ev_now = ev_time ();	1014	rt_now = ev_time ();
777	now = ev_now;	1015	mn_now = rt_now;
778	}	1016	}
779		1017
780	if (flags & EVLOOP_NONBLOCK || idlecnt)	1018	if (flags & EVLOOP_NONBLOCK || idlecnt)
781	block = 0.;	1019	block = 0.;
782	else	1020	else
783	{	1021	{
784	block = MAX_BLOCKTIME;	1022	block = MAX_BLOCKTIME;
785		1023
786	if (timercnt)	1024	if (timercnt)
787	{	1025	{
788	ev_tstamp to = timers [0]->at - now + method_fudge;	1026	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
789	if (block > to) block = to;	1027	if (block > to) block = to;
790	}	1028	}
791		1029
792	if (periodiccnt)	1030	if (periodiccnt)
793	{	1031	{
794	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1032	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
795	if (block > to) block = to;	1033	if (block > to) block = to;
796	}	1034	}
797		1035
798	if (block < 0.) block = 0.;	1036	if (block < 0.) block = 0.;
799	}	1037	}
800		1038
801	method_poll (block);	1039	method_poll (EV_A_ block);
802		1040
803	/* update ev_now, do magic */	1041	/* update rt_now, do magic */
804	time_update ();	1042	time_update (EV_A);
805		1043
806	/* queue pending timers and reschedule them */	1044	/* queue pending timers and reschedule them */
807	timers_reify (); /* relative timers called last */	1045	timers_reify (EV_A); /* relative timers called last */
808	periodics_reify (); /* absolute timers called first */	1046	periodics_reify (EV_A); /* absolute timers called first */
809		1047
810	/* queue idle watchers unless io or timers are pending */	1048	/* queue idle watchers unless io or timers are pending */
811	if (!pendingcnt)	1049	if (!pendingcnt)
812	queue_events ((W *)idles, idlecnt, EV_IDLE);	1050	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
813		1051
814	/* queue check watchers, to be executed first */	1052	/* queue check watchers, to be executed first */
815	if (checkcnt)	1053	if (checkcnt)
816	queue_events ((W *)checks, checkcnt, EV_CHECK);	1054	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
817		1055
818	call_pending ();	1056	call_pending (EV_A);
819	}	1057	}
820	while (!ev_loop_done);	1058	while (activecnt && !loop_done);
821		1059
822	if (ev_loop_done != 2)	1060	if (loop_done != 2)
823	ev_loop_done = 0;	1061	loop_done = 0;
		1062	}
		1063
		1064	void
		1065	ev_unloop (EV_P_ int how)
		1066	{
		1067	loop_done = how;
824	}	1068	}
825		1069
826	/*****************************************************************************/	1070	/*****************************************************************************/
827		1071
828	static void	1072	inline void
829	wlist_add (WL *head, WL elem)	1073	wlist_add (WL *head, WL elem)
830	{	1074	{
831	elem->next = *head;	1075	elem->next = *head;
832	*head = elem;	1076	*head = elem;
833	}	1077	}
834		1078
835	static void	1079	inline void
836	wlist_del (WL *head, WL elem)	1080	wlist_del (WL *head, WL elem)
837	{	1081	{
838	while (*head)	1082	while (*head)
839	{	1083	{
840	if (*head == elem)	1084	if (*head == elem)
…		…
845		1089
846	head = &(*head)->next;	1090	head = &(*head)->next;
847	}	1091	}
848	}	1092	}
849		1093
850	static void	1094	inline void
851	ev_clear_pending (W w)	1095	ev_clear_pending (EV_P_ W w)
852	{	1096	{
853	if (w->pending)	1097	if (w->pending)
854	{	1098	{
855	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1099	pendings [ABSPRI (w)][w->pending - 1].w = 0;
856	w->pending = 0;	1100	w->pending = 0;
857	}	1101	}
858	}	1102	}
859		1103
860	static void	1104	inline void
861	ev_start (W w, int active)	1105	ev_start (EV_P_ W w, int active)
862	{	1106	{
		1107	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1108	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1109
863	w->active = active;	1110	w->active = active;
		1111	ev_ref (EV_A);
864	}	1112	}
865		1113
866	static void	1114	inline void
867	ev_stop (W w)	1115	ev_stop (EV_P_ W w)
868	{	1116	{
		1117	ev_unref (EV_A);
869	w->active = 0;	1118	w->active = 0;
870	}	1119	}
871		1120
872	/*****************************************************************************/	1121	/*****************************************************************************/
873		1122
874	void	1123	void
875	ev_io_start (struct ev_io *w)	1124	ev_io_start (EV_P_ struct ev_io *w)
876	{	1125	{
877	int fd = w->fd;	1126	int fd = w->fd;
878		1127
879	if (ev_is_active (w))	1128	if (ev_is_active (w))
880	return;	1129	return;
881		1130
882	assert (("ev_io_start called with negative fd", fd >= 0));	1131	assert (("ev_io_start called with negative fd", fd >= 0));
883		1132
884	ev_start ((W)w, 1);	1133	ev_start (EV_A_ (W)w, 1);
885	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1134	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
886	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1135	wlist_add ((WL *)&anfds[fd].head, (WL)w);
887		1136
888	fd_change (fd);	1137	fd_change (EV_A_ fd);
889	}	1138	}
890		1139
891	void	1140	void
892	ev_io_stop (struct ev_io *w)	1141	ev_io_stop (EV_P_ struct ev_io *w)
893	{	1142	{
894	ev_clear_pending ((W)w);	1143	ev_clear_pending (EV_A_ (W)w);
895	if (!ev_is_active (w))	1144	if (!ev_is_active (w))
896	return;	1145	return;
897		1146
898	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1147	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
899	ev_stop ((W)w);	1148	ev_stop (EV_A_ (W)w);
900		1149
901	fd_change (w->fd);	1150	fd_change (EV_A_ w->fd);
902	}	1151	}
903		1152
904	void	1153	void
905	ev_timer_start (struct ev_timer *w)	1154	ev_timer_start (EV_P_ struct ev_timer *w)
906	{	1155	{
907	if (ev_is_active (w))	1156	if (ev_is_active (w))
908	return;	1157	return;
909		1158
910	w->at += now;	1159	((WT)w)->at += mn_now;
911		1160
912	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.));
913		1162
914	ev_start ((W)w, ++timercnt);	1163	ev_start (EV_A_ (W)w, ++timercnt);
915	array_needsize (timers, timermax, timercnt, );	1164	array_needsize (timers, timermax, timercnt, );
916	timers [timercnt - 1] = w;	1165	timers [timercnt - 1] = w;
917	upheap ((WT *)timers, timercnt - 1);	1166	upheap ((WT *)timers, timercnt - 1);
918	}
919		1167
		1168	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1169	}
		1170
920	void	1171	void
921	ev_timer_stop (struct ev_timer *w)	1172	ev_timer_stop (EV_P_ struct ev_timer *w)
922	{	1173	{
923	ev_clear_pending ((W)w);	1174	ev_clear_pending (EV_A_ (W)w);
924	if (!ev_is_active (w))	1175	if (!ev_is_active (w))
925	return;	1176	return;
926		1177
		1178	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1179
927	if (w->active < timercnt--)	1180	if (((W)w)->active < timercnt--)
928	{	1181	{
929	timers [w->active - 1] = timers [timercnt];	1182	timers [((W)w)->active - 1] = timers [timercnt];
930	downheap ((WT *)timers, timercnt, w->active - 1);	1183	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
931	}	1184	}
932		1185
933	w->at = w->repeat;	1186	((WT)w)->at = w->repeat;
934		1187
935	ev_stop ((W)w);	1188	ev_stop (EV_A_ (W)w);
936	}	1189	}
937		1190
938	void	1191	void
939	ev_timer_again (struct ev_timer *w)	1192	ev_timer_again (EV_P_ struct ev_timer *w)
940	{	1193	{
941	if (ev_is_active (w))	1194	if (ev_is_active (w))
942	{	1195	{
943	if (w->repeat)	1196	if (w->repeat)
944	{	1197	{
945	w->at = now + w->repeat;	1198	((WT)w)->at = mn_now + w->repeat;
946	downheap ((WT *)timers, timercnt, w->active - 1);	1199	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
947	}	1200	}
948	else	1201	else
949	ev_timer_stop (w);	1202	ev_timer_stop (EV_A_ w);
950	}	1203	}
951	else if (w->repeat)	1204	else if (w->repeat)
952	ev_timer_start (w);	1205	ev_timer_start (EV_A_ w);
953	}	1206	}
954		1207
955	void	1208	void
956	ev_periodic_start (struct ev_periodic *w)	1209	ev_periodic_start (EV_P_ struct ev_periodic *w)
957	{	1210	{
958	if (ev_is_active (w))	1211	if (ev_is_active (w))
959	return;	1212	return;
960		1213
961	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.));
962		1215
963	/* 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 */
964	if (w->interval)	1217	if (w->interval)
965	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;
966		1219
967	ev_start ((W)w, ++periodiccnt);	1220	ev_start (EV_A_ (W)w, ++periodiccnt);
968	array_needsize (periodics, periodicmax, periodiccnt, );	1221	array_needsize (periodics, periodicmax, periodiccnt, );
969	periodics [periodiccnt - 1] = w;	1222	periodics [periodiccnt - 1] = w;
970	upheap ((WT *)periodics, periodiccnt - 1);	1223	upheap ((WT *)periodics, periodiccnt - 1);
971	}
972		1224
		1225	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1226	}
		1227
973	void	1228	void
974	ev_periodic_stop (struct ev_periodic *w)	1229	ev_periodic_stop (EV_P_ struct ev_periodic *w)
975	{	1230	{
976	ev_clear_pending ((W)w);	1231	ev_clear_pending (EV_A_ (W)w);
977	if (!ev_is_active (w))	1232	if (!ev_is_active (w))
978	return;	1233	return;
979		1234
		1235	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1236
980	if (w->active < periodiccnt--)	1237	if (((W)w)->active < periodiccnt--)
981	{	1238	{
982	periodics [w->active - 1] = periodics [periodiccnt];	1239	periodics [((W)w)->active - 1] = periodics [periodiccnt];
983	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1240	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
984	}	1241	}
985		1242
986	ev_stop ((W)w);	1243	ev_stop (EV_A_ (W)w);
987	}	1244	}
988		1245
989	void	1246	void
990	ev_signal_start (struct ev_signal *w)	1247	ev_idle_start (EV_P_ struct ev_idle *w)
991	{	1248	{
992	if (ev_is_active (w))	1249	if (ev_is_active (w))
993	return;	1250	return;
994		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
995	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));
996		1326
997	ev_start ((W)w, 1);	1327	ev_start (EV_A_ (W)w, 1);
998	array_needsize (signals, signalmax, w->signum, signals_init);	1328	array_needsize (signals, signalmax, w->signum, signals_init);
999	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1329	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1000		1330
1001	if (!w->next)	1331	if (!((WL)w)->next)
1002	{	1332	{
		1333	#if WIN32
		1334	signal (w->signum, sighandler);
		1335	#else
1003	struct sigaction sa;	1336	struct sigaction sa;
1004	sa.sa_handler = sighandler;	1337	sa.sa_handler = sighandler;
1005	sigfillset (&sa.sa_mask);	1338	sigfillset (&sa.sa_mask);
1006	sa.sa_flags = 0;	1339	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1007	sigaction (w->signum, &sa, 0);	1340	sigaction (w->signum, &sa, 0);
		1341	#endif
1008	}	1342	}
1009	}	1343	}
1010		1344
1011	void	1345	void
1012	ev_signal_stop (struct ev_signal *w)	1346	ev_signal_stop (EV_P_ struct ev_signal *w)
1013	{	1347	{
1014	ev_clear_pending ((W)w);	1348	ev_clear_pending (EV_A_ (W)w);
1015	if (!ev_is_active (w))	1349	if (!ev_is_active (w))
1016	return;	1350	return;
1017		1351
1018	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1352	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1019	ev_stop ((W)w);	1353	ev_stop (EV_A_ (W)w);
1020		1354
1021	if (!signals [w->signum - 1].head)	1355	if (!signals [w->signum - 1].head)
1022	signal (w->signum, SIG_DFL);	1356	signal (w->signum, SIG_DFL);
1023	}	1357	}
1024		1358
1025	void	1359	void
1026	ev_idle_start (struct ev_idle *w)	1360	ev_child_start (EV_P_ struct ev_child *w)
1027	{	1361	{
		1362	#if EV_MULTIPLICITY
		1363	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1364	#endif
1028	if (ev_is_active (w))	1365	if (ev_is_active (w))
1029	return;	1366	return;
1030		1367
1031	ev_start ((W)w, ++idlecnt);	1368	ev_start (EV_A_ (W)w, 1);
1032	array_needsize (idles, idlemax, idlecnt, );	1369	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1033	idles [idlecnt - 1] = w;
1034	}	1370	}
1035		1371
1036	void	1372	void
1037	ev_idle_stop (struct ev_idle *w)	1373	ev_child_stop (EV_P_ struct ev_child *w)
1038	{	1374	{
1039	ev_clear_pending ((W)w);	1375	ev_clear_pending (EV_A_ (W)w);
1040	if (ev_is_active (w))	1376	if (ev_is_active (w))
1041	return;	1377	return;
1042		1378
1043	idles [w->active - 1] = idles [--idlecnt];
1044	ev_stop ((W)w);
1045	}
1046
1047	void
1048	ev_prepare_start (struct ev_prepare *w)
1049	{
1050	if (ev_is_active (w))
1051	return;
1052
1053	ev_start ((W)w, ++preparecnt);
1054	array_needsize (prepares, preparemax, preparecnt, );
1055	prepares [preparecnt - 1] = w;
1056	}
1057
1058	void
1059	ev_prepare_stop (struct ev_prepare *w)
1060	{
1061	ev_clear_pending ((W)w);
1062	if (ev_is_active (w))
1063	return;
1064
1065	prepares [w->active - 1] = prepares [--preparecnt];
1066	ev_stop ((W)w);
1067	}
1068
1069	void
1070	ev_check_start (struct ev_check *w)
1071	{
1072	if (ev_is_active (w))
1073	return;
1074
1075	ev_start ((W)w, ++checkcnt);
1076	array_needsize (checks, checkmax, checkcnt, );
1077	checks [checkcnt - 1] = w;
1078	}
1079
1080	void
1081	ev_check_stop (struct ev_check *w)
1082	{
1083	ev_clear_pending ((W)w);
1084	if (ev_is_active (w))
1085	return;
1086
1087	checks [w->active - 1] = checks [--checkcnt];
1088	ev_stop ((W)w);
1089	}
1090
1091	void
1092	ev_child_start (struct ev_child *w)
1093	{
1094	if (ev_is_active (w))
1095	return;
1096
1097	ev_start ((W)w, 1);
1098	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1099	}
1100
1101	void
1102	ev_child_stop (struct ev_child *w)
1103	{
1104	ev_clear_pending ((W)w);
1105	if (ev_is_active (w))
1106	return;
1107
1108	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1379	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1109	ev_stop ((W)w);	1380	ev_stop (EV_A_ (W)w);
1110	}	1381	}
1111		1382
1112	/*****************************************************************************/	1383	/*****************************************************************************/
1113		1384
1114	struct ev_once	1385	struct ev_once
…		…
1118	void (*cb)(int revents, void *arg);	1389	void (*cb)(int revents, void *arg);
1119	void *arg;	1390	void *arg;
1120	};	1391	};
1121		1392
1122	static void	1393	static void
1123	once_cb (struct ev_once *once, int revents)	1394	once_cb (EV_P_ struct ev_once *once, int revents)
1124	{	1395	{
1125	void (*cb)(int revents, void *arg) = once->cb;	1396	void (*cb)(int revents, void *arg) = once->cb;
1126	void *arg = once->arg;	1397	void *arg = once->arg;
1127		1398
1128	ev_io_stop (&once->io);	1399	ev_io_stop (EV_A_ &once->io);
1129	ev_timer_stop (&once->to);	1400	ev_timer_stop (EV_A_ &once->to);
1130	free (once);	1401	free (once);
1131		1402
1132	cb (revents, arg);	1403	cb (revents, arg);
1133	}	1404	}
1134		1405
1135	static void	1406	static void
1136	once_cb_io (struct ev_io *w, int revents)	1407	once_cb_io (EV_P_ struct ev_io *w, int revents)
1137	{	1408	{
1138	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);
1139	}	1410	}
1140		1411
1141	static void	1412	static void
1142	once_cb_to (struct ev_timer *w, int revents)	1413	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1143	{	1414	{
1144	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);
1145	}	1416	}
1146		1417
1147	void	1418	void
1148	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)
1149	{	1420	{
1150	struct ev_once *once = malloc (sizeof (struct ev_once));	1421	struct ev_once *once = malloc (sizeof (struct ev_once));
1151		1422
1152	if (!once)	1423	if (!once)
1153	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1424	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
…		…
1158		1429
1159	ev_watcher_init (&once->io, once_cb_io);	1430	ev_watcher_init (&once->io, once_cb_io);
1160	if (fd >= 0)	1431	if (fd >= 0)
1161	{	1432	{
1162	ev_io_set (&once->io, fd, events);	1433	ev_io_set (&once->io, fd, events);
1163	ev_io_start (&once->io);	1434	ev_io_start (EV_A_ &once->io);
1164	}	1435	}
1165		1436
1166	ev_watcher_init (&once->to, once_cb_to);	1437	ev_watcher_init (&once->to, once_cb_to);
1167	if (timeout >= 0.)	1438	if (timeout >= 0.)
1168	{	1439	{
1169	ev_timer_set (&once->to, timeout, 0.);	1440	ev_timer_set (&once->to, timeout, 0.);
1170	ev_timer_start (&once->to);	1441	ev_timer_start (EV_A_ &once->to);
1171	}	1442	}
1172	}	1443	}
1173	}	1444	}
1174		1445
1175	/*****************************************************************************/
1176
1177	#if 0
1178
1179	struct ev_io wio;
1180
1181	static void
1182	sin_cb (struct ev_io *w, int revents)
1183	{
1184	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1185	}
1186
1187	static void
1188	ocb (struct ev_timer *w, int revents)
1189	{
1190	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1191	ev_timer_stop (w);
1192	ev_timer_start (w);
1193	}
1194
1195	static void
1196	scb (struct ev_signal *w, int revents)
1197	{
1198	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1199	ev_io_stop (&wio);
1200	ev_io_start (&wio);
1201	}
1202
1203	static void
1204	gcb (struct ev_signal *w, int revents)
1205	{
1206	fprintf (stderr, "generic %x\n", revents);
1207
1208	}
1209
1210	int main (void)
1211	{
1212	ev_init (0);
1213
1214	ev_io_init (&wio, sin_cb, 0, EV_READ);
1215	ev_io_start (&wio);
1216
1217	struct ev_timer t[10000];
1218
1219	#if 0
1220	int i;
1221	for (i = 0; i < 10000; ++i)
1222	{
1223	struct ev_timer *w = t + i;
1224	ev_watcher_init (w, ocb, i);
1225	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1226	ev_timer_start (w);
1227	if (drand48 () < 0.5)
1228	ev_timer_stop (w);
1229	}
1230	#endif
1231
1232	struct ev_timer t1;
1233	ev_timer_init (&t1, ocb, 5, 10);
1234	ev_timer_start (&t1);
1235
1236	struct ev_signal sig;
1237	ev_signal_init (&sig, scb, SIGQUIT);
1238	ev_signal_start (&sig);
1239
1240	struct ev_check cw;
1241	ev_check_init (&cw, gcb);
1242	ev_check_start (&cw);
1243
1244	struct ev_idle iw;
1245	ev_idle_init (&iw, gcb);
1246	ev_idle_start (&iw);
1247
1248	ev_loop (0);
1249
1250	return 0;
1251	}
1252
1253	#endif
1254
1255
1256
1257

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