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Comparing libev/ev.c (file contents):
Revision 1.41 by root, Fri Nov 2 16:54:34 2007 UTC vs.
Revision 1.66 by root, Sun Nov 4 23:30:53 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
…		…
100	#endif	136	#endif
101		137
102	#define expect_false(expr) expect ((expr) != 0, 0)	138	#define expect_false(expr) expect ((expr) != 0, 0)
103	#define expect_true(expr) expect ((expr) != 0, 1)	139	#define expect_true(expr) expect ((expr) != 0, 1)
104		140
		141	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		142	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
		143
105	typedef struct ev_watcher *W;	144	typedef struct ev_watcher *W;
106	typedef struct ev_watcher_list *WL;	145	typedef struct ev_watcher_list *WL;
107	typedef struct ev_watcher_time *WT;	146	typedef struct ev_watcher_time *WT;
108		147
109	static ev_tstamp now_floor, now, diff; /* monotonic clock */	148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
110	ev_tstamp ev_now;
111	int ev_method;
112
113	static int have_monotonic; /* runtime */
114
115	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
116	static void (*method_modify)(int fd, int oev, int nev);
117	static void (*method_poll)(ev_tstamp timeout);
118		149
119	/*****************************************************************************/	150	/*****************************************************************************/
120		151
121	ev_tstamp	152	typedef struct
		153	{
		154	struct ev_watcher_list *head;
		155	unsigned char events;
		156	unsigned char reify;
		157	} ANFD;
		158
		159	typedef struct
		160	{
		161	W w;
		162	int events;
		163	} ANPENDING;
		164
		165	#if EV_MULTIPLICITY
		166
		167	struct ev_loop
		168	{
		169	# define VAR(name,decl) decl;
		170	# include "ev_vars.h"
		171	};
		172	# undef VAR
		173	# include "ev_wrap.h"
		174
		175	#else
		176
		177	# define VAR(name,decl) static decl;
		178	# include "ev_vars.h"
		179	# undef VAR
		180
		181	#endif
		182
		183	/*****************************************************************************/
		184
		185	inline ev_tstamp
122	ev_time (void)	186	ev_time (void)
123	{	187	{
124	#if EV_USE_REALTIME	188	#if EV_USE_REALTIME
125	struct timespec ts;	189	struct timespec ts;
126	clock_gettime (CLOCK_REALTIME, &ts);	190	clock_gettime (CLOCK_REALTIME, &ts);
…		…
130	gettimeofday (&tv, 0);	194	gettimeofday (&tv, 0);
131	return tv.tv_sec + tv.tv_usec * 1e-6;	195	return tv.tv_sec + tv.tv_usec * 1e-6;
132	#endif	196	#endif
133	}	197	}
134		198
135	static ev_tstamp	199	inline ev_tstamp
136	get_clock (void)	200	get_clock (void)
137	{	201	{
138	#if EV_USE_MONOTONIC	202	#if EV_USE_MONOTONIC
139	if (expect_true (have_monotonic))	203	if (expect_true (have_monotonic))
140	{	204	{
…		…
143	return ts.tv_sec + ts.tv_nsec * 1e-9;	207	return ts.tv_sec + ts.tv_nsec * 1e-9;
144	}	208	}
145	#endif	209	#endif
146		210
147	return ev_time ();	211	return ev_time ();
		212	}
		213
		214	ev_tstamp
		215	ev_now (EV_P)
		216	{
		217	return rt_now;
148	}	218	}
149		219
150	#define array_roundsize(base,n) ((n) | 4 & ~3)	220	#define array_roundsize(base,n) ((n) | 4 & ~3)
151		221
152	#define array_needsize(base,cur,cnt,init) \	222	#define array_needsize(base,cur,cnt,init) \
…		…
162	base = realloc (base, sizeof (*base) * (newcnt)); \	232	base = realloc (base, sizeof (*base) * (newcnt)); \
163	init (base + cur, newcnt - cur); \	233	init (base + cur, newcnt - cur); \
164	cur = newcnt; \	234	cur = newcnt; \
165	}	235	}
166		236
		237	#define array_free(stem, idx) \
		238	free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
		239
167	/*****************************************************************************/	240	/*****************************************************************************/
168
169	typedef struct
170	{
171	struct ev_io *head;
172	unsigned char events;
173	unsigned char reify;
174	} ANFD;
175
176	static ANFD *anfds;
177	static int anfdmax;
178		241
179	static void	242	static void
180	anfds_init (ANFD *base, int count)	243	anfds_init (ANFD *base, int count)
181	{	244	{
182	while (count--)	245	while (count--)
…		…
187		250
188	++base;	251	++base;
189	}	252	}
190	}	253	}
191		254
192	typedef struct
193	{
194	W w;
195	int events;
196	} ANPENDING;
197
198	static ANPENDING *pendings;
199	static int pendingmax, pendingcnt;
200
201	static void	255	static void
202	event (W w, int events)	256	event (EV_P_ W w, int events)
203	{	257	{
204	if (w->pending)	258	if (w->pending)
205	{	259	{
206	pendings [w->pending - 1].events |= events;	260	pendings [ABSPRI (w)][w->pending - 1].events |= events;
207	return;	261	return;
208	}	262	}
209		263
210	w->pending = ++pendingcnt;	264	w->pending = ++pendingcnt [ABSPRI (w)];
211	array_needsize (pendings, pendingmax, pendingcnt, );	265	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
212	pendings [pendingcnt - 1].w = w;	266	pendings [ABSPRI (w)][w->pending - 1].w = w;
213	pendings [pendingcnt - 1].events = events;	267	pendings [ABSPRI (w)][w->pending - 1].events = events;
214	}	268	}
215		269
216	static void	270	static void
217	queue_events (W *events, int eventcnt, int type)	271	queue_events (EV_P_ W *events, int eventcnt, int type)
218	{	272	{
219	int i;	273	int i;
220		274
221	for (i = 0; i < eventcnt; ++i)	275	for (i = 0; i < eventcnt; ++i)
222	event (events [i], type);	276	event (EV_A_ events [i], type);
223	}	277	}
224		278
225	static void	279	static void
226	fd_event (int fd, int events)	280	fd_event (EV_P_ int fd, int events)
227	{	281	{
228	ANFD *anfd = anfds + fd;	282	ANFD *anfd = anfds + fd;
229	struct ev_io *w;	283	struct ev_io *w;
230		284
231	for (w = anfd->head; w; w = w->next)	285	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
232	{	286	{
233	int ev = w->events & events;	287	int ev = w->events & events;
234		288
235	if (ev)	289	if (ev)
236	event ((W)w, ev);	290	event (EV_A_ (W)w, ev);
237	}	291	}
238	}	292	}
239		293
240	/*****************************************************************************/	294	/*****************************************************************************/
241		295
242	static int *fdchanges;
243	static int fdchangemax, fdchangecnt;
244
245	static void	296	static void
246	fd_reify (void)	297	fd_reify (EV_P)
247	{	298	{
248	int i;	299	int i;
249		300
250	for (i = 0; i < fdchangecnt; ++i)	301	for (i = 0; i < fdchangecnt; ++i)
251	{	302	{
…		…
253	ANFD *anfd = anfds + fd;	304	ANFD *anfd = anfds + fd;
254	struct ev_io *w;	305	struct ev_io *w;
255		306
256	int events = 0;	307	int events = 0;
257		308
258	for (w = anfd->head; w; w = w->next)	309	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
259	events |= w->events;	310	events |= w->events;
260		311
261	anfd->reify = 0;	312	anfd->reify = 0;
262		313
263	if (anfd->events != events)
264	{
265	method_modify (fd, anfd->events, events);	314	method_modify (EV_A_ fd, anfd->events, events);
266	anfd->events = events;	315	anfd->events = events;
267	}
268	}	316	}
269		317
270	fdchangecnt = 0;	318	fdchangecnt = 0;
271	}	319	}
272		320
273	static void	321	static void
274	fd_change (int fd)	322	fd_change (EV_P_ int fd)
275	{	323	{
276	if (anfds [fd].reify || fdchangecnt < 0)	324	if (anfds [fd].reify || fdchangecnt < 0)
277	return;	325	return;
278		326
279	anfds [fd].reify = 1;	327	anfds [fd].reify = 1;
…		…
282	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	330	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
283	fdchanges [fdchangecnt - 1] = fd;	331	fdchanges [fdchangecnt - 1] = fd;
284	}	332	}
285		333
286	static void	334	static void
287	fd_kill (int fd)	335	fd_kill (EV_P_ int fd)
288	{	336	{
289	struct ev_io *w;	337	struct ev_io *w;
290		338
291	printf ("killing fd %d\n", fd);//D
292	while ((w = anfds [fd].head))	339	while ((w = (struct ev_io *)anfds [fd].head))
293	{	340	{
294	ev_io_stop (w);	341	ev_io_stop (EV_A_ w);
295	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	342	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
296	}	343	}
297	}	344	}
298		345
299	/* called on EBADF to verify fds */	346	/* called on EBADF to verify fds */
300	static void	347	static void
301	fd_ebadf (void)	348	fd_ebadf (EV_P)
302	{	349	{
303	int fd;	350	int fd;
304		351
305	for (fd = 0; fd < anfdmax; ++fd)	352	for (fd = 0; fd < anfdmax; ++fd)
306	if (anfds [fd].events)	353	if (anfds [fd].events)
307	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	354	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
308	fd_kill (fd);	355	fd_kill (EV_A_ fd);
309	}	356	}
310		357
311	/* called on ENOMEM in select/poll to kill some fds and retry */	358	/* called on ENOMEM in select/poll to kill some fds and retry */
312	static void	359	static void
313	fd_enomem (void)	360	fd_enomem (EV_P)
314	{	361	{
315	int fd = anfdmax;	362	int fd;
316		363
317	while (fd--)	364	for (fd = anfdmax; fd--; )
318	if (anfds [fd].events)	365	if (anfds [fd].events)
319	{	366	{
320	close (fd);	367	close (fd);
321	fd_kill (fd);	368	fd_kill (EV_A_ fd);
322	return;	369	return;
323	}	370	}
324	}	371	}
325		372
		373	/* susually called after fork if method needs to re-arm all fds from scratch */
		374	static void
		375	fd_rearm_all (EV_P)
		376	{
		377	int fd;
		378
		379	/* this should be highly optimised to not do anything but set a flag */
		380	for (fd = 0; fd < anfdmax; ++fd)
		381	if (anfds [fd].events)
		382	{
		383	anfds [fd].events = 0;
		384	fd_change (EV_A_ fd);
		385	}
		386	}
		387
326	/*****************************************************************************/	388	/*****************************************************************************/
327		389
328	static struct ev_timer **timers;
329	static int timermax, timercnt;
330
331	static struct ev_periodic **periodics;
332	static int periodicmax, periodiccnt;
333
334	static void	390	static void
335	upheap (WT *timers, int k)	391	upheap (WT *heap, int k)
336	{	392	{
337	WT w = timers [k];	393	WT w = heap [k];
338		394
339	while (k && timers [k >> 1]->at > w->at)	395	while (k && heap [k >> 1]->at > w->at)
340	{	396	{
341	timers [k] = timers [k >> 1];	397	heap [k] = heap [k >> 1];
342	timers [k]->active = k + 1;	398	((W)heap [k])->active = k + 1;
343	k >>= 1;	399	k >>= 1;
344	}	400	}
345		401
346	timers [k] = w;	402	heap [k] = w;
347	timers [k]->active = k + 1;	403	((W)heap [k])->active = k + 1;
348		404
349	}	405	}
350		406
351	static void	407	static void
352	downheap (WT *timers, int N, int k)	408	downheap (WT *heap, int N, int k)
353	{	409	{
354	WT w = timers [k];	410	WT w = heap [k];
355		411
356	while (k < (N >> 1))	412	while (k < (N >> 1))
357	{	413	{
358	int j = k << 1;	414	int j = k << 1;
359		415
360	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	416	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
361	++j;	417	++j;
362		418
363	if (w->at <= timers [j]->at)	419	if (w->at <= heap [j]->at)
364	break;	420	break;
365		421
366	timers [k] = timers [j];	422	heap [k] = heap [j];
367	timers [k]->active = k + 1;	423	((W)heap [k])->active = k + 1;
368	k = j;	424	k = j;
369	}	425	}
370		426
371	timers [k] = w;	427	heap [k] = w;
372	timers [k]->active = k + 1;	428	((W)heap [k])->active = k + 1;
373	}	429	}
374		430
375	/*****************************************************************************/	431	/*****************************************************************************/
376		432
377	typedef struct	433	typedef struct
378	{	434	{
379	struct ev_signal *head;	435	struct ev_watcher_list *head;
380	sig_atomic_t volatile gotsig;	436	sig_atomic_t volatile gotsig;
381	} ANSIG;	437	} ANSIG;
382		438
383	static ANSIG *signals;	439	static ANSIG *signals;
384	static int signalmax;	440	static int signalmax;
…		…
404	{	460	{
405	signals [signum - 1].gotsig = 1;	461	signals [signum - 1].gotsig = 1;
406		462
407	if (!gotsig)	463	if (!gotsig)
408	{	464	{
		465	int old_errno = errno;
409	gotsig = 1;	466	gotsig = 1;
410	write (sigpipe [1], &signum, 1);	467	write (sigpipe [1], &signum, 1);
		468	errno = old_errno;
411	}	469	}
412	}	470	}
413		471
414	static void	472	static void
415	sigcb (struct ev_io *iow, int revents)	473	sigcb (EV_P_ struct ev_io *iow, int revents)
416	{	474	{
417	struct ev_signal *w;	475	struct ev_watcher_list *w;
418	int signum;	476	int signum;
419		477
420	read (sigpipe [0], &revents, 1);	478	read (sigpipe [0], &revents, 1);
421	gotsig = 0;	479	gotsig = 0;
422		480
…		…
424	if (signals [signum].gotsig)	482	if (signals [signum].gotsig)
425	{	483	{
426	signals [signum].gotsig = 0;	484	signals [signum].gotsig = 0;
427		485
428	for (w = signals [signum].head; w; w = w->next)	486	for (w = signals [signum].head; w; w = w->next)
429	event ((W)w, EV_SIGNAL);	487	event (EV_A_ (W)w, EV_SIGNAL);
430	}	488	}
431	}	489	}
432		490
433	static void	491	static void
434	siginit (void)	492	siginit (EV_P)
435	{	493	{
		494	#ifndef WIN32
436	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	495	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
437	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	496	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
438		497
439	/* rather than sort out wether we really need nb, set it */	498	/* rather than sort out wether we really need nb, set it */
440	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	499	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
441	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	500	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		501	#endif
442		502
443	ev_io_set (&sigev, sigpipe [0], EV_READ);	503	ev_io_set (&sigev, sigpipe [0], EV_READ);
444	ev_io_start (&sigev);	504	ev_io_start (EV_A_ &sigev);
		505	ev_unref (EV_A); /* child watcher should not keep loop alive */
445	}	506	}
446		507
447	/*****************************************************************************/	508	/*****************************************************************************/
448		509
449	static struct ev_idle **idles;	510	#ifndef WIN32
450	static int idlemax, idlecnt;
451
452	static struct ev_prepare **prepares;
453	static int preparemax, preparecnt;
454
455	static struct ev_check **checks;
456	static int checkmax, checkcnt;
457
458	/*****************************************************************************/
459		511
460	static struct ev_child *childs [PID_HASHSIZE];	512	static struct ev_child *childs [PID_HASHSIZE];
461	static struct ev_signal childev;	513	static struct ev_signal childev;
462		514
463	#ifndef WCONTINUED	515	#ifndef WCONTINUED
464	# define WCONTINUED 0	516	# define WCONTINUED 0
465	#endif	517	#endif
466		518
467	static void	519	static void
468	childcb (struct ev_signal *sw, int revents)	520	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
469	{	521	{
470	struct ev_child *w;	522	struct ev_child *w;
		523
		524	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		525	if (w->pid == pid || !w->pid)
		526	{
		527	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		528	w->rpid = pid;
		529	w->rstatus = status;
		530	event (EV_A_ (W)w, EV_CHILD);
		531	}
		532	}
		533
		534	static void
		535	childcb (EV_P_ struct ev_signal *sw, int revents)
		536	{
471	int pid, status;	537	int pid, status;
472		538
473	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	539	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
474	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	540	{
475	if (w->pid == pid || !w->pid)	541	/* make sure we are called again until all childs have been reaped */
476	{	542	event (EV_A_ (W)sw, EV_SIGNAL);
477	w->status = status;	543
478	event ((W)w, EV_CHILD);	544	child_reap (EV_A_ sw, pid, pid, status);
479	}	545	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		546	}
480	}	547	}
		548
		549	#endif
481		550
482	/*****************************************************************************/	551	/*****************************************************************************/
483		552
		553	#if EV_USE_KQUEUE
		554	# include "ev_kqueue.c"
		555	#endif
484	#if EV_USE_EPOLL	556	#if EV_USE_EPOLL
485	# include "ev_epoll.c"	557	# include "ev_epoll.c"
486	#endif	558	#endif
487	#if EV_USE_POLL	559	#if EV_USE_POLL
488	# include "ev_poll.c"	560	# include "ev_poll.c"
…		…
501	ev_version_minor (void)	573	ev_version_minor (void)
502	{	574	{
503	return EV_VERSION_MINOR;	575	return EV_VERSION_MINOR;
504	}	576	}
505		577
506	/* return true if we are running with elevated privileges and ignore env variables */	578	/* return true if we are running with elevated privileges and should ignore env variables */
507	static int	579	static int
508	enable_secure ()	580	enable_secure (void)
509	{	581	{
		582	#ifdef WIN32
		583	return 0;
		584	#else
510	return getuid () != geteuid ()	585	return getuid () != geteuid ()
511	|| getgid () != getegid ();	586	|| getgid () != getegid ();
		587	#endif
512	}	588	}
513		589
514	int ev_init (int methods)	590	int
		591	ev_method (EV_P)
515	{	592	{
		593	return method;
		594	}
		595
		596	static void
		597	loop_init (EV_P_ int methods)
		598	{
516	if (!ev_method)	599	if (!method)
517	{	600	{
518	#if EV_USE_MONOTONIC	601	#if EV_USE_MONOTONIC
519	{	602	{
520	struct timespec ts;	603	struct timespec ts;
521	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	604	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
522	have_monotonic = 1;	605	have_monotonic = 1;
523	}	606	}
524	#endif	607	#endif
525		608
526	ev_now = ev_time ();	609	rt_now = ev_time ();
527	now = get_clock ();	610	mn_now = get_clock ();
528	now_floor = now;	611	now_floor = mn_now;
529	diff = ev_now - now;	612	rtmn_diff = rt_now - mn_now;
530
531	if (pipe (sigpipe))
532	return 0;
533		613
534	if (methods == EVMETHOD_AUTO)	614	if (methods == EVMETHOD_AUTO)
535	if (!enable_secure () && getenv ("LIBEV_METHODS"))	615	if (!enable_secure () && getenv ("LIBEV_METHODS"))
536	methods = atoi (getenv ("LIBEV_METHODS"));	616	methods = atoi (getenv ("LIBEV_METHODS"));
537	else	617	else
538	methods = EVMETHOD_ANY;	618	methods = EVMETHOD_ANY;
539		619
540	ev_method = 0;	620	method = 0;
		621	#if EV_USE_WIN32
		622	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		623	#endif
		624	#if EV_USE_KQUEUE
		625	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		626	#endif
541	#if EV_USE_EPOLL	627	#if EV_USE_EPOLL
542	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	628	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
543	#endif	629	#endif
544	#if EV_USE_POLL	630	#if EV_USE_POLL
545	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	631	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
546	#endif	632	#endif
547	#if EV_USE_SELECT	633	#if EV_USE_SELECT
548	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	634	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
549	#endif	635	#endif
		636	}
		637	}
550		638
		639	void
		640	loop_destroy (EV_P)
		641	{
		642	int i;
		643
		644	#if EV_USE_WIN32
		645	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		646	#endif
		647	#if EV_USE_KQUEUE
		648	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		649	#endif
		650	#if EV_USE_EPOLL
		651	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		652	#endif
		653	#if EV_USE_POLL
		654	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		655	#endif
		656	#if EV_USE_SELECT
		657	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		658	#endif
		659
		660	for (i = NUMPRI; i--; )
		661	array_free (pending, [i]);
		662
		663	array_free (fdchange, );
		664	array_free (timer, );
		665	array_free (periodic, );
		666	array_free (idle, );
		667	array_free (prepare, );
		668	array_free (check, );
		669
		670	method = 0;
		671	/*TODO*/
		672	}
		673
		674	void
		675	loop_fork (EV_P)
		676	{
		677	/*TODO*/
		678	#if EV_USE_EPOLL
		679	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		680	#endif
		681	#if EV_USE_KQUEUE
		682	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		683	#endif
		684	}
		685
		686	#if EV_MULTIPLICITY
		687	struct ev_loop *
		688	ev_loop_new (int methods)
		689	{
		690	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));
		691
		692	loop_init (EV_A_ methods);
		693
		694	if (ev_method (EV_A))
		695	return loop;
		696
		697	return 0;
		698	}
		699
		700	void
		701	ev_loop_destroy (EV_P)
		702	{
		703	loop_destroy (EV_A);
		704	free (loop);
		705	}
		706
		707	void
		708	ev_loop_fork (EV_P)
		709	{
		710	loop_fork (EV_A);
		711	}
		712
		713	#endif
		714
		715	#if EV_MULTIPLICITY
		716	struct ev_loop default_loop_struct;
		717	static struct ev_loop *default_loop;
		718
		719	struct ev_loop *
		720	#else
		721	static int default_loop;
		722
		723	int
		724	#endif
		725	ev_default_loop (int methods)
		726	{
		727	if (sigpipe [0] == sigpipe [1])
		728	if (pipe (sigpipe))
		729	return 0;
		730
		731	if (!default_loop)
		732	{
		733	#if EV_MULTIPLICITY
		734	struct ev_loop *loop = default_loop = &default_loop_struct;
		735	#else
		736	default_loop = 1;
		737	#endif
		738
		739	loop_init (EV_A_ methods);
		740
551	if (ev_method)	741	if (ev_method (EV_A))
552	{	742	{
553	ev_watcher_init (&sigev, sigcb);	743	ev_watcher_init (&sigev, sigcb);
		744	ev_set_priority (&sigev, EV_MAXPRI);
554	siginit ();	745	siginit (EV_A);
555		746
		747	#ifndef WIN32
556	ev_signal_init (&childev, childcb, SIGCHLD);	748	ev_signal_init (&childev, childcb, SIGCHLD);
		749	ev_set_priority (&childev, EV_MAXPRI);
557	ev_signal_start (&childev);	750	ev_signal_start (EV_A_ &childev);
		751	ev_unref (EV_A); /* child watcher should not keep loop alive */
		752	#endif
558	}	753	}
		754	else
		755	default_loop = 0;
559	}	756	}
560		757
561	return ev_method;	758	return default_loop;
562	}	759	}
563		760
564	/*****************************************************************************/
565
566	void	761	void
567	ev_fork_prepare (void)	762	ev_default_destroy (void)
568	{	763	{
569	/* nop */	764	#if EV_MULTIPLICITY
570	}	765	struct ev_loop *loop = default_loop;
571
572	void
573	ev_fork_parent (void)
574	{
575	/* nop */
576	}
577
578	void
579	ev_fork_child (void)
580	{
581	#if EV_USE_EPOLL
582	if (ev_method == EVMETHOD_EPOLL)
583	epoll_postfork_child ();
584	#endif	766	#endif
585		767
		768	ev_ref (EV_A); /* child watcher */
		769	ev_signal_stop (EV_A_ &childev);
		770
		771	ev_ref (EV_A); /* signal watcher */
586	ev_io_stop (&sigev);	772	ev_io_stop (EV_A_ &sigev);
		773
		774	close (sigpipe [0]); sigpipe [0] = 0;
		775	close (sigpipe [1]); sigpipe [1] = 0;
		776
		777	loop_destroy (EV_A);
		778	}
		779
		780	void
		781	ev_default_fork (void)
		782	{
		783	#if EV_MULTIPLICITY
		784	struct ev_loop *loop = default_loop;
		785	#endif
		786
		787	loop_fork (EV_A);
		788
		789	ev_io_stop (EV_A_ &sigev);
587	close (sigpipe [0]);	790	close (sigpipe [0]);
588	close (sigpipe [1]);	791	close (sigpipe [1]);
589	pipe (sigpipe);	792	pipe (sigpipe);
		793
		794	ev_ref (EV_A); /* signal watcher */
590	siginit ();	795	siginit (EV_A);
591	}	796	}
592		797
593	/*****************************************************************************/	798	/*****************************************************************************/
594		799
595	static void	800	static void
596	call_pending (void)	801	call_pending (EV_P)
597	{	802	{
		803	int pri;
		804
		805	for (pri = NUMPRI; pri--; )
598	while (pendingcnt)	806	while (pendingcnt [pri])
599	{	807	{
600	ANPENDING *p = pendings + --pendingcnt;	808	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
601		809
602	if (p->w)	810	if (p->w)
603	{	811	{
604	p->w->pending = 0;	812	p->w->pending = 0;
605	p->w->cb (p->w, p->events);	813	p->w->cb (EV_A_ p->w, p->events);
606	}	814	}
607	}	815	}
608	}	816	}
609		817
610	static void	818	static void
611	timers_reify (void)	819	timers_reify (EV_P)
612	{	820	{
613	while (timercnt && timers [0]->at <= now)	821	while (timercnt && ((WT)timers [0])->at <= mn_now)
614	{	822	{
615	struct ev_timer *w = timers [0];	823	struct ev_timer *w = timers [0];
		824
		825	assert (("inactive timer on timer heap detected", ev_is_active (w)));
616		826
617	/* first reschedule or stop timer */	827	/* first reschedule or stop timer */
618	if (w->repeat)	828	if (w->repeat)
619	{	829	{
620	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	830	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
621	w->at = now + w->repeat;	831	((WT)w)->at = mn_now + w->repeat;
622	downheap ((WT *)timers, timercnt, 0);	832	downheap ((WT *)timers, timercnt, 0);
623	}	833	}
624	else	834	else
625	ev_timer_stop (w); /* nonrepeating: stop timer */	835	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
626		836
627	event ((W)w, EV_TIMEOUT);	837	event (EV_A_ (W)w, EV_TIMEOUT);
628	}	838	}
629	}	839	}
630		840
631	static void	841	static void
632	periodics_reify (void)	842	periodics_reify (EV_P)
633	{	843	{
634	while (periodiccnt && periodics [0]->at <= ev_now)	844	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
635	{	845	{
636	struct ev_periodic *w = periodics [0];	846	struct ev_periodic *w = periodics [0];
		847
		848	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
637		849
638	/* first reschedule or stop timer */	850	/* first reschedule or stop timer */
639	if (w->interval)	851	if (w->interval)
640	{	852	{
641	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	853	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
642	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	854	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
643	downheap ((WT *)periodics, periodiccnt, 0);	855	downheap ((WT *)periodics, periodiccnt, 0);
644	}	856	}
645	else	857	else
646	ev_periodic_stop (w); /* nonrepeating: stop timer */	858	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
647		859
648	event ((W)w, EV_PERIODIC);	860	event (EV_A_ (W)w, EV_PERIODIC);
649	}	861	}
650	}	862	}
651		863
652	static void	864	static void
653	periodics_reschedule (ev_tstamp diff)	865	periodics_reschedule (EV_P)
654	{	866	{
655	int i;	867	int i;
656		868
657	/* adjust periodics after time jump */	869	/* adjust periodics after time jump */
658	for (i = 0; i < periodiccnt; ++i)	870	for (i = 0; i < periodiccnt; ++i)
659	{	871	{
660	struct ev_periodic *w = periodics [i];	872	struct ev_periodic *w = periodics [i];
661		873
662	if (w->interval)	874	if (w->interval)
663	{	875	{
664	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	876	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
665		877
666	if (fabs (diff) >= 1e-4)	878	if (fabs (diff) >= 1e-4)
667	{	879	{
668	ev_periodic_stop (w);	880	ev_periodic_stop (EV_A_ w);
669	ev_periodic_start (w);	881	ev_periodic_start (EV_A_ w);
670		882
671	i = 0; /* restart loop, inefficient, but time jumps should be rare */	883	i = 0; /* restart loop, inefficient, but time jumps should be rare */
672	}	884	}
673	}	885	}
674	}	886	}
675	}	887	}
676		888
677	static int	889	inline int
678	time_update_monotonic (void)	890	time_update_monotonic (EV_P)
679	{	891	{
680	now = get_clock ();	892	mn_now = get_clock ();
681		893
682	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	894	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
683	{	895	{
684	ev_now = now + diff;	896	rt_now = rtmn_diff + mn_now;
685	return 0;	897	return 0;
686	}	898	}
687	else	899	else
688	{	900	{
689	now_floor = now;	901	now_floor = mn_now;
690	ev_now = ev_time ();	902	rt_now = ev_time ();
691	return 1;	903	return 1;
692	}	904	}
693	}	905	}
694		906
695	static void	907	static void
696	time_update (void)	908	time_update (EV_P)
697	{	909	{
698	int i;	910	int i;
699		911
700	#if EV_USE_MONOTONIC	912	#if EV_USE_MONOTONIC
701	if (expect_true (have_monotonic))	913	if (expect_true (have_monotonic))
702	{	914	{
703	if (time_update_monotonic ())	915	if (time_update_monotonic (EV_A))
704	{	916	{
705	ev_tstamp odiff = diff;	917	ev_tstamp odiff = rtmn_diff;
706		918
707	for (i = 4; --i; ) /* loop a few times, before making important decisions */	919	for (i = 4; --i; ) /* loop a few times, before making important decisions */
708	{	920	{
709	diff = ev_now - now;	921	rtmn_diff = rt_now - mn_now;
710		922
711	if (fabs (odiff - diff) < MIN_TIMEJUMP)	923	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
712	return; /* all is well */	924	return; /* all is well */
713		925
714	ev_now = ev_time ();	926	rt_now = ev_time ();
715	now = get_clock ();	927	mn_now = get_clock ();
716	now_floor = now;	928	now_floor = mn_now;
717	}	929	}
718		930
719	periodics_reschedule (diff - odiff);	931	periodics_reschedule (EV_A);
720	/* no timer adjustment, as the monotonic clock doesn't jump */	932	/* no timer adjustment, as the monotonic clock doesn't jump */
		933	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
721	}	934	}
722	}	935	}
723	else	936	else
724	#endif	937	#endif
725	{	938	{
726	ev_now = ev_time ();	939	rt_now = ev_time ();
727		940
728	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	941	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
729	{	942	{
730	periodics_reschedule (ev_now - now);	943	periodics_reschedule (EV_A);
731		944
732	/* adjust timers. this is easy, as the offset is the same for all */	945	/* adjust timers. this is easy, as the offset is the same for all */
733	for (i = 0; i < timercnt; ++i)	946	for (i = 0; i < timercnt; ++i)
734	timers [i]->at += diff;	947	((WT)timers [i])->at += rt_now - mn_now;
735	}	948	}
736		949
737	now = ev_now;	950	mn_now = rt_now;
738	}	951	}
739	}	952	}
740		953
741	int ev_loop_done;	954	void
		955	ev_ref (EV_P)
		956	{
		957	++activecnt;
		958	}
742		959
		960	void
		961	ev_unref (EV_P)
		962	{
		963	--activecnt;
		964	}
		965
		966	static int loop_done;
		967
		968	void
743	void ev_loop (int flags)	969	ev_loop (EV_P_ int flags)
744	{	970	{
745	double block;	971	double block;
746	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	972	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
747		973
748	do	974	do
749	{	975	{
750	/* queue check watchers (and execute them) */	976	/* queue check watchers (and execute them) */
751	if (expect_false (preparecnt))	977	if (expect_false (preparecnt))
752	{	978	{
753	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	979	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
754	call_pending ();	980	call_pending (EV_A);
755	}	981	}
756		982
757	/* update fd-related kernel structures */	983	/* update fd-related kernel structures */
758	fd_reify ();	984	fd_reify (EV_A);
759		985
760	/* calculate blocking time */	986	/* calculate blocking time */
761		987
762	/* we only need this for !monotonic clockor timers, but as we basically	988	/* we only need this for !monotonic clockor timers, but as we basically
763	always have timers, we just calculate it always */	989	always have timers, we just calculate it always */
764	#if EV_USE_MONOTONIC	990	#if EV_USE_MONOTONIC
765	if (expect_true (have_monotonic))	991	if (expect_true (have_monotonic))
766	time_update_monotonic ();	992	time_update_monotonic (EV_A);
767	else	993	else
768	#endif	994	#endif
769	{	995	{
770	ev_now = ev_time ();	996	rt_now = ev_time ();
771	now = ev_now;	997	mn_now = rt_now;
772	}	998	}
773		999
774	if (flags & EVLOOP_NONBLOCK || idlecnt)	1000	if (flags & EVLOOP_NONBLOCK || idlecnt)
775	block = 0.;	1001	block = 0.;
776	else	1002	else
777	{	1003	{
778	block = MAX_BLOCKTIME;	1004	block = MAX_BLOCKTIME;
779		1005
780	if (timercnt)	1006	if (timercnt)
781	{	1007	{
782	ev_tstamp to = timers [0]->at - now + method_fudge;	1008	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
783	if (block > to) block = to;	1009	if (block > to) block = to;
784	}	1010	}
785		1011
786	if (periodiccnt)	1012	if (periodiccnt)
787	{	1013	{
788	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1014	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
789	if (block > to) block = to;	1015	if (block > to) block = to;
790	}	1016	}
791		1017
792	if (block < 0.) block = 0.;	1018	if (block < 0.) block = 0.;
793	}	1019	}
794		1020
795	method_poll (block);	1021	method_poll (EV_A_ block);
796		1022
797	/* update ev_now, do magic */	1023	/* update rt_now, do magic */
798	time_update ();	1024	time_update (EV_A);
799		1025
800	/* queue pending timers and reschedule them */	1026	/* queue pending timers and reschedule them */
801	timers_reify (); /* relative timers called last */	1027	timers_reify (EV_A); /* relative timers called last */
802	periodics_reify (); /* absolute timers called first */	1028	periodics_reify (EV_A); /* absolute timers called first */
803		1029
804	/* queue idle watchers unless io or timers are pending */	1030	/* queue idle watchers unless io or timers are pending */
805	if (!pendingcnt)	1031	if (!pendingcnt)
806	queue_events ((W *)idles, idlecnt, EV_IDLE);	1032	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
807		1033
808	/* queue check watchers, to be executed first */	1034	/* queue check watchers, to be executed first */
809	if (checkcnt)	1035	if (checkcnt)
810	queue_events ((W *)checks, checkcnt, EV_CHECK);	1036	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
811		1037
812	call_pending ();	1038	call_pending (EV_A);
813	}	1039	}
814	while (!ev_loop_done);	1040	while (activecnt && !loop_done);
815		1041
816	if (ev_loop_done != 2)	1042	if (loop_done != 2)
817	ev_loop_done = 0;	1043	loop_done = 0;
		1044	}
		1045
		1046	void
		1047	ev_unloop (EV_P_ int how)
		1048	{
		1049	loop_done = how;
818	}	1050	}
819		1051
820	/*****************************************************************************/	1052	/*****************************************************************************/
821		1053
822	static void	1054	inline void
823	wlist_add (WL *head, WL elem)	1055	wlist_add (WL *head, WL elem)
824	{	1056	{
825	elem->next = *head;	1057	elem->next = *head;
826	*head = elem;	1058	*head = elem;
827	}	1059	}
828		1060
829	static void	1061	inline void
830	wlist_del (WL *head, WL elem)	1062	wlist_del (WL *head, WL elem)
831	{	1063	{
832	while (*head)	1064	while (*head)
833	{	1065	{
834	if (*head == elem)	1066	if (*head == elem)
…		…
839		1071
840	head = &(*head)->next;	1072	head = &(*head)->next;
841	}	1073	}
842	}	1074	}
843		1075
844	static void	1076	inline void
845	ev_clear_pending (W w)	1077	ev_clear_pending (EV_P_ W w)
846	{	1078	{
847	if (w->pending)	1079	if (w->pending)
848	{	1080	{
849	pendings [w->pending - 1].w = 0;	1081	pendings [ABSPRI (w)][w->pending - 1].w = 0;
850	w->pending = 0;	1082	w->pending = 0;
851	}	1083	}
852	}	1084	}
853		1085
854	static void	1086	inline void
855	ev_start (W w, int active)	1087	ev_start (EV_P_ W w, int active)
856	{	1088	{
		1089	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1090	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1091
857	w->active = active;	1092	w->active = active;
		1093	ev_ref (EV_A);
858	}	1094	}
859		1095
860	static void	1096	inline void
861	ev_stop (W w)	1097	ev_stop (EV_P_ W w)
862	{	1098	{
		1099	ev_unref (EV_A);
863	w->active = 0;	1100	w->active = 0;
864	}	1101	}
865		1102
866	/*****************************************************************************/	1103	/*****************************************************************************/
867		1104
868	void	1105	void
869	ev_io_start (struct ev_io *w)	1106	ev_io_start (EV_P_ struct ev_io *w)
870	{	1107	{
871	int fd = w->fd;	1108	int fd = w->fd;
872		1109
873	if (ev_is_active (w))	1110	if (ev_is_active (w))
874	return;	1111	return;
875		1112
876	assert (("ev_io_start called with negative fd", fd >= 0));	1113	assert (("ev_io_start called with negative fd", fd >= 0));
877		1114
878	ev_start ((W)w, 1);	1115	ev_start (EV_A_ (W)w, 1);
879	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1116	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
880	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1117	wlist_add ((WL *)&anfds[fd].head, (WL)w);
881		1118
882	fd_change (fd);	1119	fd_change (EV_A_ fd);
883	}	1120	}
884		1121
885	void	1122	void
886	ev_io_stop (struct ev_io *w)	1123	ev_io_stop (EV_P_ struct ev_io *w)
887	{	1124	{
888	ev_clear_pending ((W)w);	1125	ev_clear_pending (EV_A_ (W)w);
889	if (!ev_is_active (w))	1126	if (!ev_is_active (w))
890	return;	1127	return;
891		1128
892	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1129	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
893	ev_stop ((W)w);	1130	ev_stop (EV_A_ (W)w);
894		1131
895	fd_change (w->fd);	1132	fd_change (EV_A_ w->fd);
896	}	1133	}
897		1134
898	void	1135	void
899	ev_timer_start (struct ev_timer *w)	1136	ev_timer_start (EV_P_ struct ev_timer *w)
900	{	1137	{
901	if (ev_is_active (w))	1138	if (ev_is_active (w))
902	return;	1139	return;
903		1140
904	w->at += now;	1141	((WT)w)->at += mn_now;
905		1142
906	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1143	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
907		1144
908	ev_start ((W)w, ++timercnt);	1145	ev_start (EV_A_ (W)w, ++timercnt);
909	array_needsize (timers, timermax, timercnt, );	1146	array_needsize (timers, timermax, timercnt, );
910	timers [timercnt - 1] = w;	1147	timers [timercnt - 1] = w;
911	upheap ((WT *)timers, timercnt - 1);	1148	upheap ((WT *)timers, timercnt - 1);
912	}
913		1149
		1150	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1151	}
		1152
914	void	1153	void
915	ev_timer_stop (struct ev_timer *w)	1154	ev_timer_stop (EV_P_ struct ev_timer *w)
916	{	1155	{
917	ev_clear_pending ((W)w);	1156	ev_clear_pending (EV_A_ (W)w);
918	if (!ev_is_active (w))	1157	if (!ev_is_active (w))
919	return;	1158	return;
920		1159
		1160	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1161
921	if (w->active < timercnt--)	1162	if (((W)w)->active < timercnt--)
922	{	1163	{
923	timers [w->active - 1] = timers [timercnt];	1164	timers [((W)w)->active - 1] = timers [timercnt];
924	downheap ((WT *)timers, timercnt, w->active - 1);	1165	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
925	}	1166	}
926		1167
927	w->at = w->repeat;	1168	((WT)w)->at = w->repeat;
928		1169
929	ev_stop ((W)w);	1170	ev_stop (EV_A_ (W)w);
930	}	1171	}
931		1172
932	void	1173	void
933	ev_timer_again (struct ev_timer *w)	1174	ev_timer_again (EV_P_ struct ev_timer *w)
934	{	1175	{
935	if (ev_is_active (w))	1176	if (ev_is_active (w))
936	{	1177	{
937	if (w->repeat)	1178	if (w->repeat)
938	{	1179	{
939	w->at = now + w->repeat;	1180	((WT)w)->at = mn_now + w->repeat;
940	downheap ((WT *)timers, timercnt, w->active - 1);	1181	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
941	}	1182	}
942	else	1183	else
943	ev_timer_stop (w);	1184	ev_timer_stop (EV_A_ w);
944	}	1185	}
945	else if (w->repeat)	1186	else if (w->repeat)
946	ev_timer_start (w);	1187	ev_timer_start (EV_A_ w);
947	}	1188	}
948		1189
949	void	1190	void
950	ev_periodic_start (struct ev_periodic *w)	1191	ev_periodic_start (EV_P_ struct ev_periodic *w)
951	{	1192	{
952	if (ev_is_active (w))	1193	if (ev_is_active (w))
953	return;	1194	return;
954		1195
955	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1196	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
956		1197
957	/* this formula differs from the one in periodic_reify because we do not always round up */	1198	/* this formula differs from the one in periodic_reify because we do not always round up */
958	if (w->interval)	1199	if (w->interval)
959	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1200	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
960		1201
961	ev_start ((W)w, ++periodiccnt);	1202	ev_start (EV_A_ (W)w, ++periodiccnt);
962	array_needsize (periodics, periodicmax, periodiccnt, );	1203	array_needsize (periodics, periodicmax, periodiccnt, );
963	periodics [periodiccnt - 1] = w;	1204	periodics [periodiccnt - 1] = w;
964	upheap ((WT *)periodics, periodiccnt - 1);	1205	upheap ((WT *)periodics, periodiccnt - 1);
965	}
966		1206
		1207	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1208	}
		1209
967	void	1210	void
968	ev_periodic_stop (struct ev_periodic *w)	1211	ev_periodic_stop (EV_P_ struct ev_periodic *w)
969	{	1212	{
970	ev_clear_pending ((W)w);	1213	ev_clear_pending (EV_A_ (W)w);
971	if (!ev_is_active (w))	1214	if (!ev_is_active (w))
972	return;	1215	return;
973		1216
		1217	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1218
974	if (w->active < periodiccnt--)	1219	if (((W)w)->active < periodiccnt--)
975	{	1220	{
976	periodics [w->active - 1] = periodics [periodiccnt];	1221	periodics [((W)w)->active - 1] = periodics [periodiccnt];
977	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1222	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
978	}	1223	}
979		1224
980	ev_stop ((W)w);	1225	ev_stop (EV_A_ (W)w);
981	}	1226	}
982		1227
983	void	1228	void
984	ev_signal_start (struct ev_signal *w)	1229	ev_idle_start (EV_P_ struct ev_idle *w)
985	{	1230	{
986	if (ev_is_active (w))	1231	if (ev_is_active (w))
987	return;	1232	return;
988		1233
		1234	ev_start (EV_A_ (W)w, ++idlecnt);
		1235	array_needsize (idles, idlemax, idlecnt, );
		1236	idles [idlecnt - 1] = w;
		1237	}
		1238
		1239	void
		1240	ev_idle_stop (EV_P_ struct ev_idle *w)
		1241	{
		1242	ev_clear_pending (EV_A_ (W)w);
		1243	if (ev_is_active (w))
		1244	return;
		1245
		1246	idles [((W)w)->active - 1] = idles [--idlecnt];
		1247	ev_stop (EV_A_ (W)w);
		1248	}
		1249
		1250	void
		1251	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1252	{
		1253	if (ev_is_active (w))
		1254	return;
		1255
		1256	ev_start (EV_A_ (W)w, ++preparecnt);
		1257	array_needsize (prepares, preparemax, preparecnt, );
		1258	prepares [preparecnt - 1] = w;
		1259	}
		1260
		1261	void
		1262	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1263	{
		1264	ev_clear_pending (EV_A_ (W)w);
		1265	if (ev_is_active (w))
		1266	return;
		1267
		1268	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1269	ev_stop (EV_A_ (W)w);
		1270	}
		1271
		1272	void
		1273	ev_check_start (EV_P_ struct ev_check *w)
		1274	{
		1275	if (ev_is_active (w))
		1276	return;
		1277
		1278	ev_start (EV_A_ (W)w, ++checkcnt);
		1279	array_needsize (checks, checkmax, checkcnt, );
		1280	checks [checkcnt - 1] = w;
		1281	}
		1282
		1283	void
		1284	ev_check_stop (EV_P_ struct ev_check *w)
		1285	{
		1286	ev_clear_pending (EV_A_ (W)w);
		1287	if (ev_is_active (w))
		1288	return;
		1289
		1290	checks [((W)w)->active - 1] = checks [--checkcnt];
		1291	ev_stop (EV_A_ (W)w);
		1292	}
		1293
		1294	#ifndef SA_RESTART
		1295	# define SA_RESTART 0
		1296	#endif
		1297
		1298	void
		1299	ev_signal_start (EV_P_ struct ev_signal *w)
		1300	{
		1301	#if EV_MULTIPLICITY
		1302	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1303	#endif
		1304	if (ev_is_active (w))
		1305	return;
		1306
989	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1307	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
990		1308
991	ev_start ((W)w, 1);	1309	ev_start (EV_A_ (W)w, 1);
992	array_needsize (signals, signalmax, w->signum, signals_init);	1310	array_needsize (signals, signalmax, w->signum, signals_init);
993	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1311	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
994		1312
995	if (!w->next)	1313	if (!((WL)w)->next)
996	{	1314	{
997	struct sigaction sa;	1315	struct sigaction sa;
998	sa.sa_handler = sighandler;	1316	sa.sa_handler = sighandler;
999	sigfillset (&sa.sa_mask);	1317	sigfillset (&sa.sa_mask);
1000	sa.sa_flags = 0;	1318	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1001	sigaction (w->signum, &sa, 0);	1319	sigaction (w->signum, &sa, 0);
1002	}	1320	}
1003	}	1321	}
1004		1322
1005	void	1323	void
1006	ev_signal_stop (struct ev_signal *w)	1324	ev_signal_stop (EV_P_ struct ev_signal *w)
1007	{	1325	{
1008	ev_clear_pending ((W)w);	1326	ev_clear_pending (EV_A_ (W)w);
1009	if (!ev_is_active (w))	1327	if (!ev_is_active (w))
1010	return;	1328	return;
1011		1329
1012	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1330	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1013	ev_stop ((W)w);	1331	ev_stop (EV_A_ (W)w);
1014		1332
1015	if (!signals [w->signum - 1].head)	1333	if (!signals [w->signum - 1].head)
1016	signal (w->signum, SIG_DFL);	1334	signal (w->signum, SIG_DFL);
1017	}	1335	}
1018		1336
1019	void	1337	void
1020	ev_idle_start (struct ev_idle *w)	1338	ev_child_start (EV_P_ struct ev_child *w)
1021	{	1339	{
		1340	#if EV_MULTIPLICITY
		1341	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1342	#endif
1022	if (ev_is_active (w))	1343	if (ev_is_active (w))
1023	return;	1344	return;
1024		1345
1025	ev_start ((W)w, ++idlecnt);	1346	ev_start (EV_A_ (W)w, 1);
1026	array_needsize (idles, idlemax, idlecnt, );	1347	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1027	idles [idlecnt - 1] = w;
1028	}	1348	}
1029		1349
1030	void	1350	void
1031	ev_idle_stop (struct ev_idle *w)	1351	ev_child_stop (EV_P_ struct ev_child *w)
1032	{	1352	{
1033	ev_clear_pending ((W)w);	1353	ev_clear_pending (EV_A_ (W)w);
1034	if (ev_is_active (w))	1354	if (ev_is_active (w))
1035	return;	1355	return;
1036		1356
1037	idles [w->active - 1] = idles [--idlecnt];
1038	ev_stop ((W)w);
1039	}
1040
1041	void
1042	ev_prepare_start (struct ev_prepare *w)
1043	{
1044	if (ev_is_active (w))
1045	return;
1046
1047	ev_start ((W)w, ++preparecnt);
1048	array_needsize (prepares, preparemax, preparecnt, );
1049	prepares [preparecnt - 1] = w;
1050	}
1051
1052	void
1053	ev_prepare_stop (struct ev_prepare *w)
1054	{
1055	ev_clear_pending ((W)w);
1056	if (ev_is_active (w))
1057	return;
1058
1059	prepares [w->active - 1] = prepares [--preparecnt];
1060	ev_stop ((W)w);
1061	}
1062
1063	void
1064	ev_check_start (struct ev_check *w)
1065	{
1066	if (ev_is_active (w))
1067	return;
1068
1069	ev_start ((W)w, ++checkcnt);
1070	array_needsize (checks, checkmax, checkcnt, );
1071	checks [checkcnt - 1] = w;
1072	}
1073
1074	void
1075	ev_check_stop (struct ev_check *w)
1076	{
1077	ev_clear_pending ((W)w);
1078	if (ev_is_active (w))
1079	return;
1080
1081	checks [w->active - 1] = checks [--checkcnt];
1082	ev_stop ((W)w);
1083	}
1084
1085	void
1086	ev_child_start (struct ev_child *w)
1087	{
1088	if (ev_is_active (w))
1089	return;
1090
1091	ev_start ((W)w, 1);
1092	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1093	}
1094
1095	void
1096	ev_child_stop (struct ev_child *w)
1097	{
1098	ev_clear_pending ((W)w);
1099	if (ev_is_active (w))
1100	return;
1101
1102	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1357	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1103	ev_stop ((W)w);	1358	ev_stop (EV_A_ (W)w);
1104	}	1359	}
1105		1360
1106	/*****************************************************************************/	1361	/*****************************************************************************/
1107		1362
1108	struct ev_once	1363	struct ev_once
…		…
1112	void (*cb)(int revents, void *arg);	1367	void (*cb)(int revents, void *arg);
1113	void *arg;	1368	void *arg;
1114	};	1369	};
1115		1370
1116	static void	1371	static void
1117	once_cb (struct ev_once *once, int revents)	1372	once_cb (EV_P_ struct ev_once *once, int revents)
1118	{	1373	{
1119	void (*cb)(int revents, void *arg) = once->cb;	1374	void (*cb)(int revents, void *arg) = once->cb;
1120	void *arg = once->arg;	1375	void *arg = once->arg;
1121		1376
1122	ev_io_stop (&once->io);	1377	ev_io_stop (EV_A_ &once->io);
1123	ev_timer_stop (&once->to);	1378	ev_timer_stop (EV_A_ &once->to);
1124	free (once);	1379	free (once);
1125		1380
1126	cb (revents, arg);	1381	cb (revents, arg);
1127	}	1382	}
1128		1383
1129	static void	1384	static void
1130	once_cb_io (struct ev_io *w, int revents)	1385	once_cb_io (EV_P_ struct ev_io *w, int revents)
1131	{	1386	{
1132	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1387	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1133	}	1388	}
1134		1389
1135	static void	1390	static void
1136	once_cb_to (struct ev_timer *w, int revents)	1391	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1137	{	1392	{
1138	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1393	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1139	}	1394	}
1140		1395
1141	void	1396	void
1142	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1397	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1143	{	1398	{
1144	struct ev_once *once = malloc (sizeof (struct ev_once));	1399	struct ev_once *once = malloc (sizeof (struct ev_once));
1145		1400
1146	if (!once)	1401	if (!once)
1147	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1402	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
…		…
1152		1407
1153	ev_watcher_init (&once->io, once_cb_io);	1408	ev_watcher_init (&once->io, once_cb_io);
1154	if (fd >= 0)	1409	if (fd >= 0)
1155	{	1410	{
1156	ev_io_set (&once->io, fd, events);	1411	ev_io_set (&once->io, fd, events);
1157	ev_io_start (&once->io);	1412	ev_io_start (EV_A_ &once->io);
1158	}	1413	}
1159		1414
1160	ev_watcher_init (&once->to, once_cb_to);	1415	ev_watcher_init (&once->to, once_cb_to);
1161	if (timeout >= 0.)	1416	if (timeout >= 0.)
1162	{	1417	{
1163	ev_timer_set (&once->to, timeout, 0.);	1418	ev_timer_set (&once->to, timeout, 0.);
1164	ev_timer_start (&once->to);	1419	ev_timer_start (EV_A_ &once->to);
1165	}	1420	}
1166	}	1421	}
1167	}	1422	}
1168		1423
1169	/*****************************************************************************/
1170
1171	#if 0
1172
1173	struct ev_io wio;
1174
1175	static void
1176	sin_cb (struct ev_io *w, int revents)
1177	{
1178	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1179	}
1180
1181	static void
1182	ocb (struct ev_timer *w, int revents)
1183	{
1184	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1185	ev_timer_stop (w);
1186	ev_timer_start (w);
1187	}
1188
1189	static void
1190	scb (struct ev_signal *w, int revents)
1191	{
1192	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1193	ev_io_stop (&wio);
1194	ev_io_start (&wio);
1195	}
1196
1197	static void
1198	gcb (struct ev_signal *w, int revents)
1199	{
1200	fprintf (stderr, "generic %x\n", revents);
1201
1202	}
1203
1204	int main (void)
1205	{
1206	ev_init (0);
1207
1208	ev_io_init (&wio, sin_cb, 0, EV_READ);
1209	ev_io_start (&wio);
1210
1211	struct ev_timer t[10000];
1212
1213	#if 0
1214	int i;
1215	for (i = 0; i < 10000; ++i)
1216	{
1217	struct ev_timer *w = t + i;
1218	ev_watcher_init (w, ocb, i);
1219	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1220	ev_timer_start (w);
1221	if (drand48 () < 0.5)
1222	ev_timer_stop (w);
1223	}
1224	#endif
1225
1226	struct ev_timer t1;
1227	ev_timer_init (&t1, ocb, 5, 10);
1228	ev_timer_start (&t1);
1229
1230	struct ev_signal sig;
1231	ev_signal_init (&sig, scb, SIGQUIT);
1232	ev_signal_start (&sig);
1233
1234	struct ev_check cw;
1235	ev_check_init (&cw, gcb);
1236	ev_check_start (&cw);
1237
1238	struct ev_idle iw;
1239	ev_idle_init (&iw, gcb);
1240	ev_idle_start (&iw);
1241
1242	ev_loop (0);
1243
1244	return 0;
1245	}
1246
1247	#endif
1248
1249
1250
1251

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