[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.45 by root, Sat Nov 3 09:19:58 2007 UTC vs.
Revision 1.58 by root, Sun Nov 4 16:52:52 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_EMBED
32	# include "config.h"	32	# include "config.h"
33	#endif	33	#endif
34		34
35	#include <math.h>	35	#include <math.h>
36	#include <stdlib.h>	36	#include <stdlib.h>
…		…
58		58
59	#ifndef EV_USE_SELECT	59	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	60	# define EV_USE_SELECT 1
61	#endif	61	#endif
62		62
63	#ifndef EV_USE_POLL	63	#ifndef EV_USEV_POLL
64	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */
65	#endif	65	#endif
66		66
67	#ifndef EV_USE_EPOLL	67	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	68	# define EV_USE_EPOLL 0
69	#endif	69	#endif
…		…
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
96	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	96	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
97		97
		98	#ifndef EV_EMBED
98	#include "ev.h"	99	# include "ev.h"
		100	#endif
99		101
100	#if __GNUC__ >= 3	102	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	103	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	104	# define inline inline
103	#else	105	#else
…		…
113		115
114	typedef struct ev_watcher *W;	116	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	117	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	118	typedef struct ev_watcher_time *WT;
117		119
118	static ev_tstamp now_floor, now, diff; /* monotonic clock */	120	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119	ev_tstamp ev_now;
120	int ev_method;
121
122	static int have_monotonic; /* runtime */
123
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
125	static void (*method_modify)(int fd, int oev, int nev);
126	static void (*method_poll)(ev_tstamp timeout);
127		121
128	/*****************************************************************************/	122	/*****************************************************************************/
129		123
130	ev_tstamp	124	typedef struct
		125	{
		126	struct ev_watcher_list *head;
		127	unsigned char events;
		128	unsigned char reify;
		129	} ANFD;
		130
		131	typedef struct
		132	{
		133	W w;
		134	int events;
		135	} ANPENDING;
		136
		137	#if EV_MULTIPLICITY
		138
		139	struct ev_loop
		140	{
		141	# define VAR(name,decl) decl;
		142	# include "ev_vars.h"
		143	};
		144	# undef VAR
		145	# include "ev_wrap.h"
		146
		147	#else
		148
		149	# define VAR(name,decl) static decl;
		150	# include "ev_vars.h"
		151	# undef VAR
		152
		153	#endif
		154
		155	/*****************************************************************************/
		156
		157	inline ev_tstamp
131	ev_time (void)	158	ev_time (void)
132	{	159	{
133	#if EV_USE_REALTIME	160	#if EV_USE_REALTIME
134	struct timespec ts;	161	struct timespec ts;
135	clock_gettime (CLOCK_REALTIME, &ts);	162	clock_gettime (CLOCK_REALTIME, &ts);
…		…
139	gettimeofday (&tv, 0);	166	gettimeofday (&tv, 0);
140	return tv.tv_sec + tv.tv_usec * 1e-6;	167	return tv.tv_sec + tv.tv_usec * 1e-6;
141	#endif	168	#endif
142	}	169	}
143		170
144	static ev_tstamp	171	inline ev_tstamp
145	get_clock (void)	172	get_clock (void)
146	{	173	{
147	#if EV_USE_MONOTONIC	174	#if EV_USE_MONOTONIC
148	if (expect_true (have_monotonic))	175	if (expect_true (have_monotonic))
149	{	176	{
…		…
152	return ts.tv_sec + ts.tv_nsec * 1e-9;	179	return ts.tv_sec + ts.tv_nsec * 1e-9;
153	}	180	}
154	#endif	181	#endif
155		182
156	return ev_time ();	183	return ev_time ();
		184	}
		185
		186	ev_tstamp
		187	ev_now (EV_P)
		188	{
		189	return rt_now;
157	}	190	}
158		191
159	#define array_roundsize(base,n) ((n) \| 4 & ~3)	192	#define array_roundsize(base,n) ((n) \| 4 & ~3)
160		193
161	#define array_needsize(base,cur,cnt,init) \	194	#define array_needsize(base,cur,cnt,init) \
…		…
173	cur = newcnt; \	206	cur = newcnt; \
174	}	207	}
175		208
176	/*****************************************************************************/	209	/*****************************************************************************/
177		210
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
188	static void	211	static void
189	anfds_init (ANFD *base, int count)	212	anfds_init (ANFD *base, int count)
190	{	213	{
191	while (count--)	214	while (count--)
192	{	215	{
…		…
196		219
197	++base;	220	++base;
198	}	221	}
199	}	222	}
200		223
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	224	static void
211	event (W w, int events)	225	event (EV_P_ W w, int events)
212	{	226	{
213	if (w->pending)	227	if (w->pending)
214	{	228	{
215	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	229	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
216	return;	230	return;
…		…
221	pendings [ABSPRI (w)][w->pending - 1].w = w;	235	pendings [ABSPRI (w)][w->pending - 1].w = w;
222	pendings [ABSPRI (w)][w->pending - 1].events = events;	236	pendings [ABSPRI (w)][w->pending - 1].events = events;
223	}	237	}
224		238
225	static void	239	static void
226	queue_events (W *events, int eventcnt, int type)	240	queue_events (EV_P_ W *events, int eventcnt, int type)
227	{	241	{
228	int i;	242	int i;
229		243
230	for (i = 0; i < eventcnt; ++i)	244	for (i = 0; i < eventcnt; ++i)
231	event (events [i], type);	245	event (EV_A_ events [i], type);
232	}	246	}
233		247
234	static void	248	static void
235	fd_event (int fd, int events)	249	fd_event (EV_P_ int fd, int events)
236	{	250	{
237	ANFD *anfd = anfds + fd;	251	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	252	struct ev_io *w;
239		253
240	for (w = anfd->head; w; w = w->next)	254	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
241	{	255	{
242	int ev = w->events & events;	256	int ev = w->events & events;
243		257
244	if (ev)	258	if (ev)
245	event ((W)w, ev);	259	event (EV_A_ (W)w, ev);
246	}	260	}
247	}	261	}
248		262
249	/*****************************************************************************/	263	/*****************************************************************************/
250		264
251	static int *fdchanges;
252	static int fdchangemax, fdchangecnt;
253
254	static void	265	static void
255	fd_reify (void)	266	fd_reify (EV_P)
256	{	267	{
257	int i;	268	int i;
258		269
259	for (i = 0; i < fdchangecnt; ++i)	270	for (i = 0; i < fdchangecnt; ++i)
260	{	271	{
…		…
262	ANFD *anfd = anfds + fd;	273	ANFD *anfd = anfds + fd;
263	struct ev_io *w;	274	struct ev_io *w;
264		275
265	int events = 0;	276	int events = 0;
266		277
267	for (w = anfd->head; w; w = w->next)	278	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
268	events \|= w->events;	279	events \|= w->events;
269		280
270	anfd->reify = 0;	281	anfd->reify = 0;
271		282
272	if (anfd->events != events)	283	if (anfd->events != events)
273	{	284	{
274	method_modify (fd, anfd->events, events);	285	method_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	286	anfd->events = events;
276	}	287	}
277	}	288	}
278		289
279	fdchangecnt = 0;	290	fdchangecnt = 0;
280	}	291	}
281		292
282	static void	293	static void
283	fd_change (int fd)	294	fd_change (EV_P_ int fd)
284	{	295	{
285	if (anfds [fd].reify \|\| fdchangecnt < 0)	296	if (anfds [fd].reify \|\| fdchangecnt < 0)
286	return;	297	return;
287		298
288	anfds [fd].reify = 1;	299	anfds [fd].reify = 1;
…		…
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	302	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
292	fdchanges [fdchangecnt - 1] = fd;	303	fdchanges [fdchangecnt - 1] = fd;
293	}	304	}
294		305
295	static void	306	static void
296	fd_kill (int fd)	307	fd_kill (EV_P_ int fd)
297	{	308	{
298	struct ev_io *w;	309	struct ev_io *w;
299		310
300	printf ("killing fd %d\n", fd);//D
301	while ((w = anfds [fd].head))	311	while ((w = (struct ev_io *)anfds [fd].head))
302	{	312	{
303	ev_io_stop (w);	313	ev_io_stop (EV_A_ w);
304	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	314	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
305	}	315	}
306	}	316	}
307		317
308	/* called on EBADF to verify fds */	318	/* called on EBADF to verify fds */
309	static void	319	static void
310	fd_ebadf (void)	320	fd_ebadf (EV_P)
311	{	321	{
312	int fd;	322	int fd;
313		323
314	for (fd = 0; fd < anfdmax; ++fd)	324	for (fd = 0; fd < anfdmax; ++fd)
315	if (anfds [fd].events)	325	if (anfds [fd].events)
316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	326	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
317	fd_kill (fd);	327	fd_kill (EV_A_ fd);
318	}	328	}
319		329
320	/* called on ENOMEM in select/poll to kill some fds and retry */	330	/* called on ENOMEM in select/poll to kill some fds and retry */
321	static void	331	static void
322	fd_enomem (void)	332	fd_enomem (EV_P)
323	{	333	{
324	int fd = anfdmax;	334	int fd = anfdmax;
325		335
326	while (fd--)	336	while (fd--)
327	if (anfds [fd].events)	337	if (anfds [fd].events)
328	{	338	{
329	close (fd);	339	close (fd);
330	fd_kill (fd);	340	fd_kill (EV_A_ fd);
331	return;	341	return;
332	}	342	}
333	}	343	}
334		344
		345	/* susually called after fork if method needs to re-arm all fds from scratch */
		346	static void
		347	fd_rearm_all (EV_P)
		348	{
		349	int fd;
		350
		351	/* this should be highly optimised to not do anything but set a flag */
		352	for (fd = 0; fd < anfdmax; ++fd)
		353	if (anfds [fd].events)
		354	{
		355	anfds [fd].events = 0;
		356	fd_change (fd);
		357	}
		358	}
		359
335	/*****************************************************************************/	360	/*****************************************************************************/
336		361
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	362	static void
344	upheap (WT *timers, int k)	363	upheap (WT *heap, int k)
345	{	364	{
346	WT w = timers [k];	365	WT w = heap [k];
347		366
348	while (k && timers [k >> 1]->at > w->at)	367	while (k && heap [k >> 1]->at > w->at)
349	{	368	{
350	timers [k] = timers [k >> 1];	369	heap [k] = heap [k >> 1];
351	timers [k]->active = k + 1;	370	heap [k]->active = k + 1;
352	k >>= 1;	371	k >>= 1;
353	}	372	}
354		373
355	timers [k] = w;	374	heap [k] = w;
356	timers [k]->active = k + 1;	375	heap [k]->active = k + 1;
357		376
358	}	377	}
359		378
360	static void	379	static void
361	downheap (WT *timers, int N, int k)	380	downheap (WT *heap, int N, int k)
362	{	381	{
363	WT w = timers [k];	382	WT w = heap [k];
364		383
365	while (k < (N >> 1))	384	while (k < (N >> 1))
366	{	385	{
367	int j = k << 1;	386	int j = k << 1;
368		387
369	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	388	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
370	++j;	389	++j;
371		390
372	if (w->at <= timers [j]->at)	391	if (w->at <= heap [j]->at)
373	break;	392	break;
374		393
375	timers [k] = timers [j];	394	heap [k] = heap [j];
376	timers [k]->active = k + 1;	395	heap [k]->active = k + 1;
377	k = j;	396	k = j;
378	}	397	}
379		398
380	timers [k] = w;	399	heap [k] = w;
381	timers [k]->active = k + 1;	400	heap [k]->active = k + 1;
382	}	401	}
383		402
384	/*****************************************************************************/	403	/*****************************************************************************/
385		404
386	typedef struct	405	typedef struct
387	{	406	{
388	struct ev_signal *head;	407	struct ev_watcher_list *head;
389	sig_atomic_t volatile gotsig;	408	sig_atomic_t volatile gotsig;
390	} ANSIG;	409	} ANSIG;
391		410
392	static ANSIG *signals;	411	static ANSIG *signals;
393	static int signalmax;	412	static int signalmax;
394		413
395	static int sigpipe [2];	414	static int sigpipe [2];
396	static sig_atomic_t volatile gotsig;	415	static sig_atomic_t volatile gotsig;
397	static struct ev_io sigev;
398		416
399	static void	417	static void
400	signals_init (ANSIG *base, int count)	418	signals_init (ANSIG *base, int count)
401	{	419	{
402	while (count--)	420	while (count--)
…		…
413	{	431	{
414	signals [signum - 1].gotsig = 1;	432	signals [signum - 1].gotsig = 1;
415		433
416	if (!gotsig)	434	if (!gotsig)
417	{	435	{
		436	int old_errno = errno;
418	gotsig = 1;	437	gotsig = 1;
419	write (sigpipe [1], &signum, 1);	438	write (sigpipe [1], &signum, 1);
		439	errno = old_errno;
420	}	440	}
421	}	441	}
422		442
423	static void	443	static void
424	sigcb (struct ev_io *iow, int revents)	444	sigcb (EV_P_ struct ev_io *iow, int revents)
425	{	445	{
426	struct ev_signal *w;	446	struct ev_watcher_list *w;
427	int signum;	447	int signum;
428		448
429	read (sigpipe [0], &revents, 1);	449	read (sigpipe [0], &revents, 1);
430	gotsig = 0;	450	gotsig = 0;
431		451
…		…
433	if (signals [signum].gotsig)	453	if (signals [signum].gotsig)
434	{	454	{
435	signals [signum].gotsig = 0;	455	signals [signum].gotsig = 0;
436		456
437	for (w = signals [signum].head; w; w = w->next)	457	for (w = signals [signum].head; w; w = w->next)
438	event ((W)w, EV_SIGNAL);	458	event (EV_A_ (W)w, EV_SIGNAL);
439	}	459	}
440	}	460	}
441		461
442	static void	462	static void
443	siginit (void)	463	siginit (EV_P)
444	{	464	{
445	#ifndef WIN32	465	#ifndef WIN32
446	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	466	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
447	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	467	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
448		468
…		…
450	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	470	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
451	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	471	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
452	#endif	472	#endif
453		473
454	ev_io_set (&sigev, sigpipe [0], EV_READ);	474	ev_io_set (&sigev, sigpipe [0], EV_READ);
455	ev_io_start (&sigev);	475	ev_io_start (EV_A_ &sigev);
		476	ev_unref (EV_A); /* child watcher should not keep loop alive */
456	}	477	}
457		478
458	/*****************************************************************************/	479	/*****************************************************************************/
459
460	static struct ev_idle **idles;
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
471	static struct ev_child *childs [PID_HASHSIZE];
472	static struct ev_signal childev;
473		480
474	#ifndef WIN32	481	#ifndef WIN32
475		482
476	#ifndef WCONTINUED	483	#ifndef WCONTINUED
477	# define WCONTINUED 0	484	# define WCONTINUED 0
478	#endif	485	#endif
479		486
480	static void	487	static void
481	childcb (struct ev_signal *sw, int revents)	488	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
482	{	489	{
483	struct ev_child *w;	490	struct ev_child *w;
		491
		492	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		493	if (w->pid == pid \|\| !w->pid)
		494	{
		495	w->priority = sw->priority; /* need to do it now */
		496	w->rpid = pid;
		497	w->rstatus = status;
		498	event (EV_A_ (W)w, EV_CHILD);
		499	}
		500	}
		501
		502	static void
		503	childcb (EV_P_ struct ev_signal *sw, int revents)
		504	{
484	int pid, status;	505	int pid, status;
485		506
486	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	507	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
487	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	508	{
488	if (w->pid == pid \|\| !w->pid)	509	/* make sure we are called again until all childs have been reaped */
489	{	510	event (EV_A_ (W)sw, EV_SIGNAL);
490	w->status = status;	511
491	event ((W)w, EV_CHILD);	512	child_reap (EV_A_ sw, pid, pid, status);
492	}	513	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		514	}
493	}	515	}
494		516
495	#endif	517	#endif
496		518
497	/*****************************************************************************/	519	/*****************************************************************************/
…		…
500	# include "ev_kqueue.c"	522	# include "ev_kqueue.c"
501	#endif	523	#endif
502	#if EV_USE_EPOLL	524	#if EV_USE_EPOLL
503	# include "ev_epoll.c"	525	# include "ev_epoll.c"
504	#endif	526	#endif
505	#if EV_USE_POLL	527	#if EV_USEV_POLL
506	# include "ev_poll.c"	528	# include "ev_poll.c"
507	#endif	529	#endif
508	#if EV_USE_SELECT	530	#if EV_USE_SELECT
509	# include "ev_select.c"	531	# include "ev_select.c"
510	#endif	532	#endif
…		…
519	ev_version_minor (void)	541	ev_version_minor (void)
520	{	542	{
521	return EV_VERSION_MINOR;	543	return EV_VERSION_MINOR;
522	}	544	}
523		545
524	/* return true if we are running with elevated privileges and ignore env variables */	546	/* return true if we are running with elevated privileges and should ignore env variables */
525	static int	547	static int
526	enable_secure ()	548	enable_secure (void)
527	{	549	{
		550	#ifdef WIN32
		551	return 0;
		552	#else
528	return getuid () != geteuid ()	553	return getuid () != geteuid ()
529	\|\| getgid () != getegid ();	554	\|\| getgid () != getegid ();
		555	#endif
530	}	556	}
531		557
532	int ev_init (int methods)	558	int
		559	ev_method (EV_P)
533	{	560	{
		561	return method;
		562	}
		563
		564	static void
		565	loop_init (EV_P_ int methods)
		566	{
534	if (!ev_method)	567	if (!method)
535	{	568	{
536	#if EV_USE_MONOTONIC	569	#if EV_USE_MONOTONIC
537	{	570	{
538	struct timespec ts;	571	struct timespec ts;
539	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	572	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
540	have_monotonic = 1;	573	have_monotonic = 1;
541	}	574	}
542	#endif	575	#endif
543		576
544	ev_now = ev_time ();	577	rt_now = ev_time ();
545	now = get_clock ();	578	mn_now = get_clock ();
546	now_floor = now;	579	now_floor = mn_now;
547	diff = ev_now - now;	580	rtmn_diff = rt_now - mn_now;
548
549	if (pipe (sigpipe))
550	return 0;
551		581
552	if (methods == EVMETHOD_AUTO)	582	if (methods == EVMETHOD_AUTO)
553	if (!enable_secure () && getenv ("LIBEV_METHODS"))	583	if (!enable_secure () && getenv ("LIBEV_METHODS"))
554	methods = atoi (getenv ("LIBEV_METHODS"));	584	methods = atoi (getenv ("LIBEV_METHODS"));
555	else	585	else
556	methods = EVMETHOD_ANY;	586	methods = EVMETHOD_ANY;
557		587
558	ev_method = 0;	588	method = 0;
559	#if EV_USE_KQUEUE	589	#if EV_USE_KQUEUE
560	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	590	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
561	#endif	591	#endif
562	#if EV_USE_EPOLL	592	#if EV_USE_EPOLL
563	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	593	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
564	#endif	594	#endif
565	#if EV_USE_POLL	595	#if EV_USEV_POLL
566	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	596	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
567	#endif	597	#endif
568	#if EV_USE_SELECT	598	#if EV_USE_SELECT
569	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	599	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
570	#endif	600	#endif
		601	}
		602	}
571		603
		604	void
		605	loop_destroy (EV_P)
		606	{
		607	#if EV_USE_KQUEUE
		608	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		609	#endif
		610	#if EV_USE_EPOLL
		611	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		612	#endif
		613	#if EV_USEV_POLL
		614	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		615	#endif
		616	#if EV_USE_SELECT
		617	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		618	#endif
		619
		620	method = 0;
		621	/TODO/
		622	}
		623
		624	void
		625	loop_fork (EV_P)
		626	{
		627	/TODO/
		628	#if EV_USE_EPOLL
		629	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		630	#endif
		631	#if EV_USE_KQUEUE
		632	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		633	#endif
		634	}
		635
		636	#if EV_MULTIPLICITY
		637	struct ev_loop *
		638	ev_loop_new (int methods)
		639	{
		640	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));
		641
		642	loop_init (EV_A_ methods);
		643
		644	if (ev_methods (EV_A))
		645	return loop;
		646
		647	return 0;
		648	}
		649
		650	void
		651	ev_loop_destroy (EV_P)
		652	{
		653	loop_destroy (EV_A);
		654	free (loop);
		655	}
		656
		657	void
		658	ev_loop_fork (EV_P)
		659	{
		660	loop_fork (EV_A);
		661	}
		662
		663	#endif
		664
		665	#if EV_MULTIPLICITY
		666	struct ev_loop default_loop_struct;
		667	static struct ev_loop *default_loop;
		668
		669	struct ev_loop *
		670	#else
		671	static int default_loop;
		672
		673	int
		674	#endif
		675	ev_default_loop (int methods)
		676	{
		677	if (sigpipe [0] == sigpipe [1])
		678	if (pipe (sigpipe))
		679	return 0;
		680
		681	if (!default_loop)
		682	{
		683	#if EV_MULTIPLICITY
		684	struct ev_loop *loop = default_loop = &default_loop_struct;
		685	#else
		686	default_loop = 1;
		687	#endif
		688
		689	loop_init (EV_A_ methods);
		690
572	if (ev_method)	691	if (ev_method (EV_A))
573	{	692	{
574	ev_watcher_init (&sigev, sigcb);	693	ev_watcher_init (&sigev, sigcb);
		694	ev_set_priority (&sigev, EV_MAXPRI);
575	siginit ();	695	siginit (EV_A);
576		696
577	#ifndef WIN32	697	#ifndef WIN32
578	ev_signal_init (&childev, childcb, SIGCHLD);	698	ev_signal_init (&childev, childcb, SIGCHLD);
		699	ev_set_priority (&childev, EV_MAXPRI);
579	ev_signal_start (&childev);	700	ev_signal_start (EV_A_ &childev);
		701	ev_unref (EV_A); /* child watcher should not keep loop alive */
580	#endif	702	#endif
581	}	703	}
		704	else
		705	default_loop = 0;
582	}	706	}
583		707
584	return ev_method;	708	return default_loop;
585	}	709	}
586		710
587	/*****************************************************************************/
588
589	void	711	void
590	ev_fork_prepare (void)	712	ev_default_destroy (void)
591	{	713	{
592	/* nop */	714	#if EV_MULTIPLICITY
593	}	715	struct ev_loop *loop = default_loop;
594
595	void
596	ev_fork_parent (void)
597	{
598	/* nop */
599	}
600
601	void
602	ev_fork_child (void)
603	{
604	#if EV_USE_EPOLL
605	if (ev_method == EVMETHOD_EPOLL)
606	epoll_postfork_child ();
607	#endif	716	#endif
608		717
		718	ev_ref (EV_A); /* child watcher */
		719	ev_signal_stop (EV_A_ &childev);
		720
		721	ev_ref (EV_A); /* signal watcher */
609	ev_io_stop (&sigev);	722	ev_io_stop (EV_A_ &sigev);
		723
		724	close (sigpipe [0]); sigpipe [0] = 0;
		725	close (sigpipe [1]); sigpipe [1] = 0;
		726
		727	loop_destroy (EV_A);
		728	}
		729
		730	void
		731	ev_default_fork (EV_P)
		732	{
		733	loop_fork (EV_A);
		734
		735	ev_io_stop (EV_A_ &sigev);
610	close (sigpipe [0]);	736	close (sigpipe [0]);
611	close (sigpipe [1]);	737	close (sigpipe [1]);
612	pipe (sigpipe);	738	pipe (sigpipe);
		739
		740	ev_ref (EV_A); /* signal watcher */
613	siginit ();	741	siginit (EV_A);
614	}	742	}
615		743
616	/*****************************************************************************/	744	/*****************************************************************************/
617		745
618	static void	746	static void
619	call_pending (void)	747	call_pending (EV_P)
620	{	748	{
621	int pri;	749	int pri;
622		750
623	for (pri = NUMPRI; pri--; )	751	for (pri = NUMPRI; pri--; )
624	while (pendingcnt [pri])	752	while (pendingcnt [pri])
…		…
626	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	754	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
627		755
628	if (p->w)	756	if (p->w)
629	{	757	{
630	p->w->pending = 0;	758	p->w->pending = 0;
631	p->w->cb (p->w, p->events);	759	p->w->cb (EV_A_ p->w, p->events);
632	}	760	}
633	}	761	}
634	}	762	}
635		763
636	static void	764	static void
637	timers_reify (void)	765	timers_reify (EV_P)
638	{	766	{
639	while (timercnt && timers [0]->at <= now)	767	while (timercnt && timers [0]->at <= mn_now)
640	{	768	{
641	struct ev_timer *w = timers [0];	769	struct ev_timer *w = timers [0];
642		770
643	/* first reschedule or stop timer */	771	/* first reschedule or stop timer */
644	if (w->repeat)	772	if (w->repeat)
645	{	773	{
646	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	774	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
647	w->at = now + w->repeat;	775	w->at = mn_now + w->repeat;
648	downheap ((WT *)timers, timercnt, 0);	776	downheap ((WT *)timers, timercnt, 0);
649	}	777	}
650	else	778	else
651	ev_timer_stop (w); /* nonrepeating: stop timer */	779	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
652		780
653	event ((W)w, EV_TIMEOUT);	781	event (EV_A_ (W)w, EV_TIMEOUT);
654	}	782	}
655	}	783	}
656		784
657	static void	785	static void
658	periodics_reify (void)	786	periodics_reify (EV_P)
659	{	787	{
660	while (periodiccnt && periodics [0]->at <= ev_now)	788	while (periodiccnt && periodics [0]->at <= rt_now)
661	{	789	{
662	struct ev_periodic *w = periodics [0];	790	struct ev_periodic *w = periodics [0];
663		791
664	/* first reschedule or stop timer */	792	/* first reschedule or stop timer */
665	if (w->interval)	793	if (w->interval)
666	{	794	{
667	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	795	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;
668	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	796	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
669	downheap ((WT *)periodics, periodiccnt, 0);	797	downheap ((WT *)periodics, periodiccnt, 0);
670	}	798	}
671	else	799	else
672	ev_periodic_stop (w); /* nonrepeating: stop timer */	800	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
673		801
674	event ((W)w, EV_PERIODIC);	802	event (EV_A_ (W)w, EV_PERIODIC);
675	}	803	}
676	}	804	}
677		805
678	static void	806	static void
679	periodics_reschedule (ev_tstamp diff)	807	periodics_reschedule (EV_P)
680	{	808	{
681	int i;	809	int i;
682		810
683	/* adjust periodics after time jump */	811	/* adjust periodics after time jump */
684	for (i = 0; i < periodiccnt; ++i)	812	for (i = 0; i < periodiccnt; ++i)
685	{	813	{
686	struct ev_periodic *w = periodics [i];	814	struct ev_periodic *w = periodics [i];
687		815
688	if (w->interval)	816	if (w->interval)
689	{	817	{
690	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	818	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
691		819
692	if (fabs (diff) >= 1e-4)	820	if (fabs (diff) >= 1e-4)
693	{	821	{
694	ev_periodic_stop (w);	822	ev_periodic_stop (EV_A_ w);
695	ev_periodic_start (w);	823	ev_periodic_start (EV_A_ w);
696		824
697	i = 0; /* restart loop, inefficient, but time jumps should be rare */	825	i = 0; /* restart loop, inefficient, but time jumps should be rare */
698	}	826	}
699	}	827	}
700	}	828	}
701	}	829	}
702		830
703	static int	831	inline int
704	time_update_monotonic (void)	832	time_update_monotonic (EV_P)
705	{	833	{
706	now = get_clock ();	834	mn_now = get_clock ();
707		835
708	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	836	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
709	{	837	{
710	ev_now = now + diff;	838	rt_now = rtmn_diff + mn_now;
711	return 0;	839	return 0;
712	}	840	}
713	else	841	else
714	{	842	{
715	now_floor = now;	843	now_floor = mn_now;
716	ev_now = ev_time ();	844	rt_now = ev_time ();
717	return 1;	845	return 1;
718	}	846	}
719	}	847	}
720		848
721	static void	849	static void
722	time_update (void)	850	time_update (EV_P)
723	{	851	{
724	int i;	852	int i;
725		853
726	#if EV_USE_MONOTONIC	854	#if EV_USE_MONOTONIC
727	if (expect_true (have_monotonic))	855	if (expect_true (have_monotonic))
728	{	856	{
729	if (time_update_monotonic ())	857	if (time_update_monotonic (EV_A))
730	{	858	{
731	ev_tstamp odiff = diff;	859	ev_tstamp odiff = rtmn_diff;
732		860
733	for (i = 4; --i; ) /* loop a few times, before making important decisions */	861	for (i = 4; --i; ) /* loop a few times, before making important decisions */
734	{	862	{
735	diff = ev_now - now;	863	rtmn_diff = rt_now - mn_now;
736		864
737	if (fabs (odiff - diff) < MIN_TIMEJUMP)	865	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
738	return; /* all is well */	866	return; /* all is well */
739		867
740	ev_now = ev_time ();	868	rt_now = ev_time ();
741	now = get_clock ();	869	mn_now = get_clock ();
742	now_floor = now;	870	now_floor = mn_now;
743	}	871	}
744		872
745	periodics_reschedule (diff - odiff);	873	periodics_reschedule (EV_A);
746	/* no timer adjustment, as the monotonic clock doesn't jump */	874	/* no timer adjustment, as the monotonic clock doesn't jump */
		875	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
747	}	876	}
748	}	877	}
749	else	878	else
750	#endif	879	#endif
751	{	880	{
752	ev_now = ev_time ();	881	rt_now = ev_time ();
753		882
754	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	883	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
755	{	884	{
756	periodics_reschedule (ev_now - now);	885	periodics_reschedule (EV_A);
757		886
758	/* adjust timers. this is easy, as the offset is the same for all */	887	/* adjust timers. this is easy, as the offset is the same for all */
759	for (i = 0; i < timercnt; ++i)	888	for (i = 0; i < timercnt; ++i)
760	timers [i]->at += diff;	889	timers [i]->at += rt_now - mn_now;
761	}	890	}
762		891
763	now = ev_now;	892	mn_now = rt_now;
764	}	893	}
765	}	894	}
766		895
767	int ev_loop_done;	896	void
		897	ev_ref (EV_P)
		898	{
		899	++activecnt;
		900	}
768		901
		902	void
		903	ev_unref (EV_P)
		904	{
		905	--activecnt;
		906	}
		907
		908	static int loop_done;
		909
		910	void
769	void ev_loop (int flags)	911	ev_loop (EV_P_ int flags)
770	{	912	{
771	double block;	913	double block;
772	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	914	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
773		915
774	do	916	do
775	{	917	{
776	/* queue check watchers (and execute them) */	918	/* queue check watchers (and execute them) */
777	if (expect_false (preparecnt))	919	if (expect_false (preparecnt))
778	{	920	{
779	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	921	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
780	call_pending ();	922	call_pending (EV_A);
781	}	923	}
782		924
783	/* update fd-related kernel structures */	925	/* update fd-related kernel structures */
784	fd_reify ();	926	fd_reify (EV_A);
785		927
786	/* calculate blocking time */	928	/* calculate blocking time */
787		929
788	/* we only need this for !monotonic clockor timers, but as we basically	930	/* we only need this for !monotonic clockor timers, but as we basically
789	always have timers, we just calculate it always */	931	always have timers, we just calculate it always */
790	#if EV_USE_MONOTONIC	932	#if EV_USE_MONOTONIC
791	if (expect_true (have_monotonic))	933	if (expect_true (have_monotonic))
792	time_update_monotonic ();	934	time_update_monotonic (EV_A);
793	else	935	else
794	#endif	936	#endif
795	{	937	{
796	ev_now = ev_time ();	938	rt_now = ev_time ();
797	now = ev_now;	939	mn_now = rt_now;
798	}	940	}
799		941
800	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	942	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
801	block = 0.;	943	block = 0.;
802	else	944	else
803	{	945	{
804	block = MAX_BLOCKTIME;	946	block = MAX_BLOCKTIME;
805		947
806	if (timercnt)	948	if (timercnt)
807	{	949	{
808	ev_tstamp to = timers [0]->at - now + method_fudge;	950	ev_tstamp to = timers [0]->at - mn_now + method_fudge;
809	if (block > to) block = to;	951	if (block > to) block = to;
810	}	952	}
811		953
812	if (periodiccnt)	954	if (periodiccnt)
813	{	955	{
814	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	956	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
815	if (block > to) block = to;	957	if (block > to) block = to;
816	}	958	}
817		959
818	if (block < 0.) block = 0.;	960	if (block < 0.) block = 0.;
819	}	961	}
820		962
821	method_poll (block);	963	method_poll (EV_A_ block);
822		964
823	/* update ev_now, do magic */	965	/* update rt_now, do magic */
824	time_update ();	966	time_update (EV_A);
825		967
826	/* queue pending timers and reschedule them */	968	/* queue pending timers and reschedule them */
827	timers_reify (); /* relative timers called last */	969	timers_reify (EV_A); /* relative timers called last */
828	periodics_reify (); /* absolute timers called first */	970	periodics_reify (EV_A); /* absolute timers called first */
829		971
830	/* queue idle watchers unless io or timers are pending */	972	/* queue idle watchers unless io or timers are pending */
831	if (!pendingcnt)	973	if (!pendingcnt)
832	queue_events ((W *)idles, idlecnt, EV_IDLE);	974	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
833		975
834	/* queue check watchers, to be executed first */	976	/* queue check watchers, to be executed first */
835	if (checkcnt)	977	if (checkcnt)
836	queue_events ((W *)checks, checkcnt, EV_CHECK);	978	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
837		979
838	call_pending ();	980	call_pending (EV_A);
839	}	981	}
840	while (!ev_loop_done);	982	while (activecnt && !loop_done);
841		983
842	if (ev_loop_done != 2)	984	if (loop_done != 2)
843	ev_loop_done = 0;	985	loop_done = 0;
		986	}
		987
		988	void
		989	ev_unloop (EV_P_ int how)
		990	{
		991	loop_done = how;
844	}	992	}
845		993
846	/*****************************************************************************/	994	/*****************************************************************************/
847		995
848	static void	996	inline void
849	wlist_add (WL *head, WL elem)	997	wlist_add (WL *head, WL elem)
850	{	998	{
851	elem->next = *head;	999	elem->next = *head;
852	*head = elem;	1000	*head = elem;
853	}	1001	}
854		1002
855	static void	1003	inline void
856	wlist_del (WL *head, WL elem)	1004	wlist_del (WL *head, WL elem)
857	{	1005	{
858	while (*head)	1006	while (*head)
859	{	1007	{
860	if (*head == elem)	1008	if (*head == elem)
…		…
865		1013
866	head = &(*head)->next;	1014	head = &(*head)->next;
867	}	1015	}
868	}	1016	}
869		1017
870	static void	1018	inline void
871	ev_clear_pending (W w)	1019	ev_clear_pending (EV_P_ W w)
872	{	1020	{
873	if (w->pending)	1021	if (w->pending)
874	{	1022	{
875	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1023	pendings [ABSPRI (w)][w->pending - 1].w = 0;
876	w->pending = 0;	1024	w->pending = 0;
877	}	1025	}
878	}	1026	}
879		1027
880	static void	1028	inline void
881	ev_start (W w, int active)	1029	ev_start (EV_P_ W w, int active)
882	{	1030	{
883	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1031	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
884	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1032	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
885		1033
886	w->active = active;	1034	w->active = active;
		1035	ev_ref (EV_A);
887	}	1036	}
888		1037
889	static void	1038	inline void
890	ev_stop (W w)	1039	ev_stop (EV_P_ W w)
891	{	1040	{
		1041	ev_unref (EV_A);
892	w->active = 0;	1042	w->active = 0;
893	}	1043	}
894		1044
895	/*****************************************************************************/	1045	/*****************************************************************************/
896		1046
897	void	1047	void
898	ev_io_start (struct ev_io *w)	1048	ev_io_start (EV_P_ struct ev_io *w)
899	{	1049	{
900	int fd = w->fd;	1050	int fd = w->fd;
901		1051
902	if (ev_is_active (w))	1052	if (ev_is_active (w))
903	return;	1053	return;
904		1054
905	assert (("ev_io_start called with negative fd", fd >= 0));	1055	assert (("ev_io_start called with negative fd", fd >= 0));
906		1056
907	ev_start ((W)w, 1);	1057	ev_start (EV_A_ (W)w, 1);
908	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1058	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
909	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1059	wlist_add ((WL *)&anfds[fd].head, (WL)w);
910		1060
911	fd_change (fd);	1061	fd_change (EV_A_ fd);
912	}	1062	}
913		1063
914	void	1064	void
915	ev_io_stop (struct ev_io *w)	1065	ev_io_stop (EV_P_ struct ev_io *w)
916	{	1066	{
917	ev_clear_pending ((W)w);	1067	ev_clear_pending (EV_A_ (W)w);
918	if (!ev_is_active (w))	1068	if (!ev_is_active (w))
919	return;	1069	return;
920		1070
921	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1071	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
922	ev_stop ((W)w);	1072	ev_stop (EV_A_ (W)w);
923		1073
924	fd_change (w->fd);	1074	fd_change (EV_A_ w->fd);
925	}	1075	}
926		1076
927	void	1077	void
928	ev_timer_start (struct ev_timer *w)	1078	ev_timer_start (EV_P_ struct ev_timer *w)
929	{	1079	{
930	if (ev_is_active (w))	1080	if (ev_is_active (w))
931	return;	1081	return;
932		1082
933	w->at += now;	1083	w->at += mn_now;
934		1084
935	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1085	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
936		1086
937	ev_start ((W)w, ++timercnt);	1087	ev_start (EV_A_ (W)w, ++timercnt);
938	array_needsize (timers, timermax, timercnt, );	1088	array_needsize (timers, timermax, timercnt, );
939	timers [timercnt - 1] = w;	1089	timers [timercnt - 1] = w;
940	upheap ((WT *)timers, timercnt - 1);	1090	upheap ((WT *)timers, timercnt - 1);
941	}	1091	}
942		1092
943	void	1093	void
944	ev_timer_stop (struct ev_timer *w)	1094	ev_timer_stop (EV_P_ struct ev_timer *w)
945	{	1095	{
946	ev_clear_pending ((W)w);	1096	ev_clear_pending (EV_A_ (W)w);
947	if (!ev_is_active (w))	1097	if (!ev_is_active (w))
948	return;	1098	return;
949		1099
950	if (w->active < timercnt--)	1100	if (w->active < timercnt--)
951	{	1101	{
…		…
953	downheap ((WT *)timers, timercnt, w->active - 1);	1103	downheap ((WT *)timers, timercnt, w->active - 1);
954	}	1104	}
955		1105
956	w->at = w->repeat;	1106	w->at = w->repeat;
957		1107
958	ev_stop ((W)w);	1108	ev_stop (EV_A_ (W)w);
959	}	1109	}
960		1110
961	void	1111	void
962	ev_timer_again (struct ev_timer *w)	1112	ev_timer_again (EV_P_ struct ev_timer *w)
963	{	1113	{
964	if (ev_is_active (w))	1114	if (ev_is_active (w))
965	{	1115	{
966	if (w->repeat)	1116	if (w->repeat)
967	{	1117	{
968	w->at = now + w->repeat;	1118	w->at = mn_now + w->repeat;
969	downheap ((WT *)timers, timercnt, w->active - 1);	1119	downheap ((WT *)timers, timercnt, w->active - 1);
970	}	1120	}
971	else	1121	else
972	ev_timer_stop (w);	1122	ev_timer_stop (EV_A_ w);
973	}	1123	}
974	else if (w->repeat)	1124	else if (w->repeat)
975	ev_timer_start (w);	1125	ev_timer_start (EV_A_ w);
976	}	1126	}
977		1127
978	void	1128	void
979	ev_periodic_start (struct ev_periodic *w)	1129	ev_periodic_start (EV_P_ struct ev_periodic *w)
980	{	1130	{
981	if (ev_is_active (w))	1131	if (ev_is_active (w))
982	return;	1132	return;
983		1133
984	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1134	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
985		1135
986	/* this formula differs from the one in periodic_reify because we do not always round up */	1136	/* this formula differs from the one in periodic_reify because we do not always round up */
987	if (w->interval)	1137	if (w->interval)
988	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1138	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
989		1139
990	ev_start ((W)w, ++periodiccnt);	1140	ev_start (EV_A_ (W)w, ++periodiccnt);
991	array_needsize (periodics, periodicmax, periodiccnt, );	1141	array_needsize (periodics, periodicmax, periodiccnt, );
992	periodics [periodiccnt - 1] = w;	1142	periodics [periodiccnt - 1] = w;
993	upheap ((WT *)periodics, periodiccnt - 1);	1143	upheap ((WT *)periodics, periodiccnt - 1);
994	}	1144	}
995		1145
996	void	1146	void
997	ev_periodic_stop (struct ev_periodic *w)	1147	ev_periodic_stop (EV_P_ struct ev_periodic *w)
998	{	1148	{
999	ev_clear_pending ((W)w);	1149	ev_clear_pending (EV_A_ (W)w);
1000	if (!ev_is_active (w))	1150	if (!ev_is_active (w))
1001	return;	1151	return;
1002		1152
1003	if (w->active < periodiccnt--)	1153	if (w->active < periodiccnt--)
1004	{	1154	{
1005	periodics [w->active - 1] = periodics [periodiccnt];	1155	periodics [w->active - 1] = periodics [periodiccnt];
1006	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1156	downheap ((WT *)periodics, periodiccnt, w->active - 1);
1007	}	1157	}
1008		1158
1009	ev_stop ((W)w);	1159	ev_stop (EV_A_ (W)w);
1010	}	1160	}
1011		1161
1012	void	1162	void
1013	ev_signal_start (struct ev_signal *w)	1163	ev_idle_start (EV_P_ struct ev_idle *w)
1014	{	1164	{
1015	if (ev_is_active (w))	1165	if (ev_is_active (w))
1016	return;	1166	return;
1017		1167
		1168	ev_start (EV_A_ (W)w, ++idlecnt);
		1169	array_needsize (idles, idlemax, idlecnt, );
		1170	idles [idlecnt - 1] = w;
		1171	}
		1172
		1173	void
		1174	ev_idle_stop (EV_P_ struct ev_idle *w)
		1175	{
		1176	ev_clear_pending (EV_A_ (W)w);
		1177	if (ev_is_active (w))
		1178	return;
		1179
		1180	idles [w->active - 1] = idles [--idlecnt];
		1181	ev_stop (EV_A_ (W)w);
		1182	}
		1183
		1184	void
		1185	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1186	{
		1187	if (ev_is_active (w))
		1188	return;
		1189
		1190	ev_start (EV_A_ (W)w, ++preparecnt);
		1191	array_needsize (prepares, preparemax, preparecnt, );
		1192	prepares [preparecnt - 1] = w;
		1193	}
		1194
		1195	void
		1196	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1197	{
		1198	ev_clear_pending (EV_A_ (W)w);
		1199	if (ev_is_active (w))
		1200	return;
		1201
		1202	prepares [w->active - 1] = prepares [--preparecnt];
		1203	ev_stop (EV_A_ (W)w);
		1204	}
		1205
		1206	void
		1207	ev_check_start (EV_P_ struct ev_check *w)
		1208	{
		1209	if (ev_is_active (w))
		1210	return;
		1211
		1212	ev_start (EV_A_ (W)w, ++checkcnt);
		1213	array_needsize (checks, checkmax, checkcnt, );
		1214	checks [checkcnt - 1] = w;
		1215	}
		1216
		1217	void
		1218	ev_check_stop (EV_P_ struct ev_check *w)
		1219	{
		1220	ev_clear_pending (EV_A_ (W)w);
		1221	if (ev_is_active (w))
		1222	return;
		1223
		1224	checks [w->active - 1] = checks [--checkcnt];
		1225	ev_stop (EV_A_ (W)w);
		1226	}
		1227
		1228	#ifndef SA_RESTART
		1229	# define SA_RESTART 0
		1230	#endif
		1231
		1232	void
		1233	ev_signal_start (EV_P_ struct ev_signal *w)
		1234	{
		1235	#if EV_MULTIPLICITY
		1236	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1237	#endif
		1238	if (ev_is_active (w))
		1239	return;
		1240
1018	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1241	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1019		1242
1020	ev_start ((W)w, 1);	1243	ev_start (EV_A_ (W)w, 1);
1021	array_needsize (signals, signalmax, w->signum, signals_init);	1244	array_needsize (signals, signalmax, w->signum, signals_init);
1022	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1245	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1023		1246
1024	if (!w->next)	1247	if (!w->next)
1025	{	1248	{
1026	struct sigaction sa;	1249	struct sigaction sa;
1027	sa.sa_handler = sighandler;	1250	sa.sa_handler = sighandler;
1028	sigfillset (&sa.sa_mask);	1251	sigfillset (&sa.sa_mask);
1029	sa.sa_flags = 0;	1252	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1030	sigaction (w->signum, &sa, 0);	1253	sigaction (w->signum, &sa, 0);
1031	}	1254	}
1032	}	1255	}
1033		1256
1034	void	1257	void
1035	ev_signal_stop (struct ev_signal *w)	1258	ev_signal_stop (EV_P_ struct ev_signal *w)
1036	{	1259	{
1037	ev_clear_pending ((W)w);	1260	ev_clear_pending (EV_A_ (W)w);
1038	if (!ev_is_active (w))	1261	if (!ev_is_active (w))
1039	return;	1262	return;
1040		1263
1041	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1264	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1042	ev_stop ((W)w);	1265	ev_stop (EV_A_ (W)w);
1043		1266
1044	if (!signals [w->signum - 1].head)	1267	if (!signals [w->signum - 1].head)
1045	signal (w->signum, SIG_DFL);	1268	signal (w->signum, SIG_DFL);
1046	}	1269	}
1047		1270
1048	void	1271	void
1049	ev_idle_start (struct ev_idle *w)	1272	ev_child_start (EV_P_ struct ev_child *w)
1050	{	1273	{
		1274	#if EV_MULTIPLICITY
		1275	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1276	#endif
1051	if (ev_is_active (w))	1277	if (ev_is_active (w))
1052	return;	1278	return;
1053		1279
1054	ev_start ((W)w, ++idlecnt);	1280	ev_start (EV_A_ (W)w, 1);
1055	array_needsize (idles, idlemax, idlecnt, );	1281	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1056	idles [idlecnt - 1] = w;
1057	}	1282	}
1058		1283
1059	void	1284	void
1060	ev_idle_stop (struct ev_idle *w)	1285	ev_child_stop (EV_P_ struct ev_child *w)
1061	{	1286	{
1062	ev_clear_pending ((W)w);	1287	ev_clear_pending (EV_A_ (W)w);
1063	if (ev_is_active (w))	1288	if (ev_is_active (w))
1064	return;	1289	return;
1065		1290
1066	idles [w->active - 1] = idles [--idlecnt];
1067	ev_stop ((W)w);
1068	}
1069
1070	void
1071	ev_prepare_start (struct ev_prepare *w)
1072	{
1073	if (ev_is_active (w))
1074	return;
1075
1076	ev_start ((W)w, ++preparecnt);
1077	array_needsize (prepares, preparemax, preparecnt, );
1078	prepares [preparecnt - 1] = w;
1079	}
1080
1081	void
1082	ev_prepare_stop (struct ev_prepare *w)
1083	{
1084	ev_clear_pending ((W)w);
1085	if (ev_is_active (w))
1086	return;
1087
1088	prepares [w->active - 1] = prepares [--preparecnt];
1089	ev_stop ((W)w);
1090	}
1091
1092	void
1093	ev_check_start (struct ev_check *w)
1094	{
1095	if (ev_is_active (w))
1096	return;
1097
1098	ev_start ((W)w, ++checkcnt);
1099	array_needsize (checks, checkmax, checkcnt, );
1100	checks [checkcnt - 1] = w;
1101	}
1102
1103	void
1104	ev_check_stop (struct ev_check *w)
1105	{
1106	ev_clear_pending ((W)w);
1107	if (ev_is_active (w))
1108	return;
1109
1110	checks [w->active - 1] = checks [--checkcnt];
1111	ev_stop ((W)w);
1112	}
1113
1114	void
1115	ev_child_start (struct ev_child *w)
1116	{
1117	if (ev_is_active (w))
1118	return;
1119
1120	ev_start ((W)w, 1);
1121	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1122	}
1123
1124	void
1125	ev_child_stop (struct ev_child *w)
1126	{
1127	ev_clear_pending ((W)w);
1128	if (ev_is_active (w))
1129	return;
1130
1131	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1291	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1132	ev_stop ((W)w);	1292	ev_stop (EV_A_ (W)w);
1133	}	1293	}
1134		1294
1135	/*****************************************************************************/	1295	/*****************************************************************************/
1136		1296
1137	struct ev_once	1297	struct ev_once
…		…
1141	void (cb)(int revents, void arg);	1301	void (cb)(int revents, void arg);
1142	void *arg;	1302	void *arg;
1143	};	1303	};
1144		1304
1145	static void	1305	static void
1146	once_cb (struct ev_once *once, int revents)	1306	once_cb (EV_P_ struct ev_once *once, int revents)
1147	{	1307	{
1148	void (cb)(int revents, void arg) = once->cb;	1308	void (cb)(int revents, void arg) = once->cb;
1149	void *arg = once->arg;	1309	void *arg = once->arg;
1150		1310
1151	ev_io_stop (&once->io);	1311	ev_io_stop (EV_A_ &once->io);
1152	ev_timer_stop (&once->to);	1312	ev_timer_stop (EV_A_ &once->to);
1153	free (once);	1313	free (once);
1154		1314
1155	cb (revents, arg);	1315	cb (revents, arg);
1156	}	1316	}
1157		1317
1158	static void	1318	static void
1159	once_cb_io (struct ev_io *w, int revents)	1319	once_cb_io (EV_P_ struct ev_io *w, int revents)
1160	{	1320	{
1161	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1321	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1162	}	1322	}
1163		1323
1164	static void	1324	static void
1165	once_cb_to (struct ev_timer *w, int revents)	1325	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1166	{	1326	{
1167	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1327	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1168	}	1328	}
1169		1329
1170	void	1330	void
1171	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1331	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1172	{	1332	{
1173	struct ev_once *once = malloc (sizeof (struct ev_once));	1333	struct ev_once *once = malloc (sizeof (struct ev_once));
1174		1334
1175	if (!once)	1335	if (!once)
1176	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1336	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
…		…
1181		1341
1182	ev_watcher_init (&once->io, once_cb_io);	1342	ev_watcher_init (&once->io, once_cb_io);
1183	if (fd >= 0)	1343	if (fd >= 0)
1184	{	1344	{
1185	ev_io_set (&once->io, fd, events);	1345	ev_io_set (&once->io, fd, events);
1186	ev_io_start (&once->io);	1346	ev_io_start (EV_A_ &once->io);
1187	}	1347	}
1188		1348
1189	ev_watcher_init (&once->to, once_cb_to);	1349	ev_watcher_init (&once->to, once_cb_to);
1190	if (timeout >= 0.)	1350	if (timeout >= 0.)
1191	{	1351	{
1192	ev_timer_set (&once->to, timeout, 0.);	1352	ev_timer_set (&once->to, timeout, 0.);
1193	ev_timer_start (&once->to);	1353	ev_timer_start (EV_A_ &once->to);
1194	}	1354	}
1195	}	1355	}
1196	}	1356	}
1197		1357
1198	/*****************************************************************************/
1199
1200	#if 0
1201
1202	struct ev_io wio;
1203
1204	static void
1205	sin_cb (struct ev_io *w, int revents)
1206	{
1207	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1208	}
1209
1210	static void
1211	ocb (struct ev_timer *w, int revents)
1212	{
1213	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1214	ev_timer_stop (w);
1215	ev_timer_start (w);
1216	}
1217
1218	static void
1219	scb (struct ev_signal *w, int revents)
1220	{
1221	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1222	ev_io_stop (&wio);
1223	ev_io_start (&wio);
1224	}
1225
1226	static void
1227	gcb (struct ev_signal *w, int revents)
1228	{
1229	fprintf (stderr, "generic %x\n", revents);
1230
1231	}
1232
1233	int main (void)
1234	{
1235	ev_init (0);
1236
1237	ev_io_init (&wio, sin_cb, 0, EV_READ);
1238	ev_io_start (&wio);
1239
1240	struct ev_timer t[10000];
1241
1242	#if 0
1243	int i;
1244	for (i = 0; i < 10000; ++i)
1245	{
1246	struct ev_timer *w = t + i;
1247	ev_watcher_init (w, ocb, i);
1248	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1249	ev_timer_start (w);
1250	if (drand48 () < 0.5)
1251	ev_timer_stop (w);
1252	}
1253	#endif
1254
1255	struct ev_timer t1;
1256	ev_timer_init (&t1, ocb, 5, 10);
1257	ev_timer_start (&t1);
1258
1259	struct ev_signal sig;
1260	ev_signal_init (&sig, scb, SIGQUIT);
1261	ev_signal_start (&sig);
1262
1263	struct ev_check cw;
1264	ev_check_init (&cw, gcb);
1265	ev_check_start (&cw);
1266
1267	struct ev_idle iw;
1268	ev_idle_init (&iw, gcb);
1269	ev_idle_start (&iw);
1270
1271	ev_loop (0);
1272
1273	return 0;
1274	}
1275
1276	#endif
1277
1278
1279
1280

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Comparing libev/ev.c (file contents): Revision 1.45 by root, Sat Nov 3 09:19:58 2007 UTC vs. Revision 1.58 by root, Sun Nov 4 16:52:52 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.45 by root, Sat Nov 3 09:19:58 2007 UTC vs.
Revision 1.58 by root, Sun Nov 4 16:52:52 2007 UTC