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Comparing libev/ev.c (file contents):
Revision 1.48 by root, Sat Nov 3 12:19:31 2007 UTC vs.
Revision 1.69 by root, Tue Nov 6 00:10:04 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
31	#if EV_USE_CONFIG_H	31	#ifndef EV_STANDALONE
32	# include "config.h"	32	# include "config.h"
		33
		34	# if HAVE_CLOCK_GETTIME
		35	# define EV_USE_MONOTONIC 1
		36	# define EV_USE_REALTIME 1
		37	# endif
		38
		39	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		40	# define EV_USE_SELECT 1
		41	# endif
		42
		43	# if HAVE_POLL && HAVE_POLL_H
		44	# define EV_USE_POLL 1
		45	# endif
		46
		47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		48	# define EV_USE_EPOLL 1
		49	# endif
		50
		51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		52	# define EV_USE_KQUEUE 1
		53	# endif
		54
33	#endif	55	#endif
34		56
35	#include <math.h>	57	#include <math.h>
36	#include <stdlib.h>	58	#include <stdlib.h>
37	#include <unistd.h>	59	#include <unistd.h>
…		…
70		92
71	#ifndef EV_USE_KQUEUE	93	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	94	# define EV_USE_KQUEUE 0
73	#endif	95	#endif
74		96
		97	#ifndef EV_USE_WIN32
		98	# ifdef WIN32
		99	# define EV_USE_WIN32 1
		100	# else
		101	# define EV_USE_WIN32 0
		102	# endif
		103	#endif
		104
75	#ifndef EV_USE_REALTIME	105	#ifndef EV_USE_REALTIME
76	# define EV_USE_REALTIME 1	106	# define EV_USE_REALTIME 1
77	#endif	107	#endif
78		108
79	/**/	109	/**/
…		…
113		143
114	typedef struct ev_watcher *W;	144	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	145	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	146	typedef struct ev_watcher_time *WT;
117		147
118	static ev_tstamp now_floor, now, diff; /* monotonic clock */	148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119	ev_tstamp ev_now;
120	int ev_method;
121		149
122	static int have_monotonic; /* runtime */	150	#if WIN32
123		151	/* note: the comment below could not be substantiated, but what would I care */
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	152	/* MSDN says this is required to handle SIGFPE */
125	static void (*method_modify)(int fd, int oev, int nev);	153	volatile double SIGFPE_REQ = 0.0f;
126	static void (*method_poll)(ev_tstamp timeout);	154	#endif
127		155
128	/*****************************************************************************/	156	/*****************************************************************************/
129		157
130	ev_tstamp	158	static void (*syserr_cb)(void);
		159
		160	void ev_set_syserr_cb (void (*cb)(void))
		161	{
		162	syserr_cb = cb;
		163	}
		164
		165	static void
		166	syserr (void)
		167	{
		168	if (syserr_cb)
		169	syserr_cb ();
		170	else
		171	{
		172	perror ("libev");
		173	abort ();
		174	}
		175	}
		176
		177	static void *(*alloc)(void *ptr, long size);
		178
		179	void ev_set_allocator (void *(*cb)(void *ptr, long size))
		180	{
		181	alloc = cb;
		182	}
		183
		184	static void *
		185	ev_realloc (void *ptr, long size)
		186	{
		187	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		188
		189	if (!ptr && size)
		190	{
		191	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		192	abort ();
		193	}
		194
		195	return ptr;
		196	}
		197
		198	#define ev_malloc(size) ev_realloc (0, (size))
		199	#define ev_free(ptr) ev_realloc ((ptr), 0)
		200
		201	/*****************************************************************************/
		202
		203	typedef struct
		204	{
		205	WL head;
		206	unsigned char events;
		207	unsigned char reify;
		208	} ANFD;
		209
		210	typedef struct
		211	{
		212	W w;
		213	int events;
		214	} ANPENDING;
		215
		216	#if EV_MULTIPLICITY
		217
		218	struct ev_loop
		219	{
		220	# define VAR(name,decl) decl;
		221	# include "ev_vars.h"
		222	};
		223	# undef VAR
		224	# include "ev_wrap.h"
		225
		226	#else
		227
		228	# define VAR(name,decl) static decl;
		229	# include "ev_vars.h"
		230	# undef VAR
		231
		232	#endif
		233
		234	/*****************************************************************************/
		235
		236	inline ev_tstamp
131	ev_time (void)	237	ev_time (void)
132	{	238	{
133	#if EV_USE_REALTIME	239	#if EV_USE_REALTIME
134	struct timespec ts;	240	struct timespec ts;
135	clock_gettime (CLOCK_REALTIME, &ts);	241	clock_gettime (CLOCK_REALTIME, &ts);
…		…
139	gettimeofday (&tv, 0);	245	gettimeofday (&tv, 0);
140	return tv.tv_sec + tv.tv_usec * 1e-6;	246	return tv.tv_sec + tv.tv_usec * 1e-6;
141	#endif	247	#endif
142	}	248	}
143		249
144	static ev_tstamp	250	inline ev_tstamp
145	get_clock (void)	251	get_clock (void)
146	{	252	{
147	#if EV_USE_MONOTONIC	253	#if EV_USE_MONOTONIC
148	if (expect_true (have_monotonic))	254	if (expect_true (have_monotonic))
149	{	255	{
…		…
154	#endif	260	#endif
155		261
156	return ev_time ();	262	return ev_time ();
157	}	263	}
158		264
		265	ev_tstamp
		266	ev_now (EV_P)
		267	{
		268	return rt_now;
		269	}
		270
159	#define array_roundsize(base,n) ((n) | 4 & ~3)	271	#define array_roundsize(base,n) ((n) | 4 & ~3)
160		272
161	#define array_needsize(base,cur,cnt,init) \	273	#define array_needsize(base,cur,cnt,init) \
162	if (expect_false ((cnt) > cur)) \	274	if (expect_false ((cnt) > cur)) \
163	{ \	275	{ \
164	int newcnt = cur; \	276	int newcnt = cur; \
165	do \	277	do \
166	{ \	278	{ \
167	newcnt = array_roundsize (base, newcnt << 1); \	279	newcnt = array_roundsize (base, newcnt << 1); \
168	} \	280	} \
169	while ((cnt) > newcnt); \	281	while ((cnt) > newcnt); \
170	\	282	\
171	base = realloc (base, sizeof (*base) * (newcnt)); \	283	base = ev_realloc (base, sizeof (*base) * (newcnt)); \
172	init (base + cur, newcnt - cur); \	284	init (base + cur, newcnt - cur); \
173	cur = newcnt; \	285	cur = newcnt; \
174	}	286	}
		287
		288	#define array_slim(stem) \
		289	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		290	{ \
		291	stem ## max = array_roundsize (stem ## cnt >> 1); \
		292	base = ev_realloc (base, sizeof (*base) * (stem ## max)); \
		293	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		294	}
		295
		296	#define array_free(stem, idx) \
		297	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
175		298
176	/*****************************************************************************/	299	/*****************************************************************************/
177
178	typedef struct
179	{
180	struct ev_io *head;
181	unsigned char events;
182	unsigned char reify;
183	} ANFD;
184
185	static ANFD *anfds;
186	static int anfdmax;
187		300
188	static void	301	static void
189	anfds_init (ANFD *base, int count)	302	anfds_init (ANFD *base, int count)
190	{	303	{
191	while (count--)	304	while (count--)
…		…
196		309
197	++base;	310	++base;
198	}	311	}
199	}	312	}
200		313
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	314	static void
211	event (W w, int events)	315	event (EV_P_ W w, int events)
212	{	316	{
213	if (w->pending)	317	if (w->pending)
214	{	318	{
215	pendings [ABSPRI (w)][w->pending - 1].events |= events;	319	pendings [ABSPRI (w)][w->pending - 1].events |= events;
216	return;	320	return;
…		…
221	pendings [ABSPRI (w)][w->pending - 1].w = w;	325	pendings [ABSPRI (w)][w->pending - 1].w = w;
222	pendings [ABSPRI (w)][w->pending - 1].events = events;	326	pendings [ABSPRI (w)][w->pending - 1].events = events;
223	}	327	}
224		328
225	static void	329	static void
226	queue_events (W *events, int eventcnt, int type)	330	queue_events (EV_P_ W *events, int eventcnt, int type)
227	{	331	{
228	int i;	332	int i;
229		333
230	for (i = 0; i < eventcnt; ++i)	334	for (i = 0; i < eventcnt; ++i)
231	event (events [i], type);	335	event (EV_A_ events [i], type);
232	}	336	}
233		337
234	static void	338	static void
235	fd_event (int fd, int events)	339	fd_event (EV_P_ int fd, int events)
236	{	340	{
237	ANFD *anfd = anfds + fd;	341	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	342	struct ev_io *w;
239		343
240	for (w = anfd->head; w; w = w->next)	344	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
241	{	345	{
242	int ev = w->events & events;	346	int ev = w->events & events;
243		347
244	if (ev)	348	if (ev)
245	event ((W)w, ev);	349	event (EV_A_ (W)w, ev);
246	}	350	}
247	}	351	}
248		352
249	/*****************************************************************************/	353	/*****************************************************************************/
250		354
251	static int *fdchanges;
252	static int fdchangemax, fdchangecnt;
253
254	static void	355	static void
255	fd_reify (void)	356	fd_reify (EV_P)
256	{	357	{
257	int i;	358	int i;
258		359
259	for (i = 0; i < fdchangecnt; ++i)	360	for (i = 0; i < fdchangecnt; ++i)
260	{	361	{
…		…
262	ANFD *anfd = anfds + fd;	363	ANFD *anfd = anfds + fd;
263	struct ev_io *w;	364	struct ev_io *w;
264		365
265	int events = 0;	366	int events = 0;
266		367
267	for (w = anfd->head; w; w = w->next)	368	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
268	events |= w->events;	369	events |= w->events;
269		370
270	anfd->reify = 0;	371	anfd->reify = 0;
271		372
272	if (anfd->events != events)
273	{
274	method_modify (fd, anfd->events, events);	373	method_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	374	anfd->events = events;
276	}
277	}	375	}
278		376
279	fdchangecnt = 0;	377	fdchangecnt = 0;
280	}	378	}
281		379
282	static void	380	static void
283	fd_change (int fd)	381	fd_change (EV_P_ int fd)
284	{	382	{
285	if (anfds [fd].reify || fdchangecnt < 0)	383	if (anfds [fd].reify || fdchangecnt < 0)
286	return;	384	return;
287		385
288	anfds [fd].reify = 1;	386	anfds [fd].reify = 1;
…		…
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	389	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
292	fdchanges [fdchangecnt - 1] = fd;	390	fdchanges [fdchangecnt - 1] = fd;
293	}	391	}
294		392
295	static void	393	static void
296	fd_kill (int fd)	394	fd_kill (EV_P_ int fd)
297	{	395	{
298	struct ev_io *w;	396	struct ev_io *w;
299		397
300	printf ("killing fd %d\n", fd);//D
301	while ((w = anfds [fd].head))	398	while ((w = (struct ev_io *)anfds [fd].head))
302	{	399	{
303	ev_io_stop (w);	400	ev_io_stop (EV_A_ w);
304	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	401	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
305	}	402	}
306	}	403	}
307		404
308	/* called on EBADF to verify fds */	405	/* called on EBADF to verify fds */
309	static void	406	static void
310	fd_ebadf (void)	407	fd_ebadf (EV_P)
311	{	408	{
312	int fd;	409	int fd;
313		410
314	for (fd = 0; fd < anfdmax; ++fd)	411	for (fd = 0; fd < anfdmax; ++fd)
315	if (anfds [fd].events)	412	if (anfds [fd].events)
316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	413	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
317	fd_kill (fd);	414	fd_kill (EV_A_ fd);
318	}	415	}
319		416
320	/* called on ENOMEM in select/poll to kill some fds and retry */	417	/* called on ENOMEM in select/poll to kill some fds and retry */
321	static void	418	static void
322	fd_enomem (void)	419	fd_enomem (EV_P)
323	{	420	{
324	int fd = anfdmax;	421	int fd;
325		422
326	while (fd--)	423	for (fd = anfdmax; fd--; )
327	if (anfds [fd].events)	424	if (anfds [fd].events)
328	{	425	{
329	close (fd);
330	fd_kill (fd);	426	fd_kill (EV_A_ fd);
331	return;	427	return;
332	}	428	}
333	}	429	}
334		430
		431	/* susually called after fork if method needs to re-arm all fds from scratch */
		432	static void
		433	fd_rearm_all (EV_P)
		434	{
		435	int fd;
		436
		437	/* this should be highly optimised to not do anything but set a flag */
		438	for (fd = 0; fd < anfdmax; ++fd)
		439	if (anfds [fd].events)
		440	{
		441	anfds [fd].events = 0;
		442	fd_change (EV_A_ fd);
		443	}
		444	}
		445
335	/*****************************************************************************/	446	/*****************************************************************************/
336		447
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	448	static void
344	upheap (WT *timers, int k)	449	upheap (WT *heap, int k)
345	{	450	{
346	WT w = timers [k];	451	WT w = heap [k];
347		452
348	while (k && timers [k >> 1]->at > w->at)	453	while (k && heap [k >> 1]->at > w->at)
349	{	454	{
350	timers [k] = timers [k >> 1];	455	heap [k] = heap [k >> 1];
351	timers [k]->active = k + 1;	456	((W)heap [k])->active = k + 1;
352	k >>= 1;	457	k >>= 1;
353	}	458	}
354		459
355	timers [k] = w;	460	heap [k] = w;
356	timers [k]->active = k + 1;	461	((W)heap [k])->active = k + 1;
357		462
358	}	463	}
359		464
360	static void	465	static void
361	downheap (WT *timers, int N, int k)	466	downheap (WT *heap, int N, int k)
362	{	467	{
363	WT w = timers [k];	468	WT w = heap [k];
364		469
365	while (k < (N >> 1))	470	while (k < (N >> 1))
366	{	471	{
367	int j = k << 1;	472	int j = k << 1;
368		473
369	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	474	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
370	++j;	475	++j;
371		476
372	if (w->at <= timers [j]->at)	477	if (w->at <= heap [j]->at)
373	break;	478	break;
374		479
375	timers [k] = timers [j];	480	heap [k] = heap [j];
376	timers [k]->active = k + 1;	481	((W)heap [k])->active = k + 1;
377	k = j;	482	k = j;
378	}	483	}
379		484
380	timers [k] = w;	485	heap [k] = w;
381	timers [k]->active = k + 1;	486	((W)heap [k])->active = k + 1;
382	}	487	}
383		488
384	/*****************************************************************************/	489	/*****************************************************************************/
385		490
386	typedef struct	491	typedef struct
387	{	492	{
388	struct ev_signal *head;	493	WL head;
389	sig_atomic_t volatile gotsig;	494	sig_atomic_t volatile gotsig;
390	} ANSIG;	495	} ANSIG;
391		496
392	static ANSIG *signals;	497	static ANSIG *signals;
393	static int signalmax;	498	static int signalmax;
…		…
409	}	514	}
410		515
411	static void	516	static void
412	sighandler (int signum)	517	sighandler (int signum)
413	{	518	{
		519	#if WIN32
		520	signal (signum, sighandler);
		521	#endif
		522
414	signals [signum - 1].gotsig = 1;	523	signals [signum - 1].gotsig = 1;
415		524
416	if (!gotsig)	525	if (!gotsig)
417	{	526	{
418	int old_errno = errno;	527	int old_errno = errno;
…		…
421	errno = old_errno;	530	errno = old_errno;
422	}	531	}
423	}	532	}
424		533
425	static void	534	static void
426	sigcb (struct ev_io *iow, int revents)	535	sigcb (EV_P_ struct ev_io *iow, int revents)
427	{	536	{
428	struct ev_signal *w;	537	WL w;
429	int signum;	538	int signum;
430		539
431	read (sigpipe [0], &revents, 1);	540	read (sigpipe [0], &revents, 1);
432	gotsig = 0;	541	gotsig = 0;
433		542
…		…
435	if (signals [signum].gotsig)	544	if (signals [signum].gotsig)
436	{	545	{
437	signals [signum].gotsig = 0;	546	signals [signum].gotsig = 0;
438		547
439	for (w = signals [signum].head; w; w = w->next)	548	for (w = signals [signum].head; w; w = w->next)
440	event ((W)w, EV_SIGNAL);	549	event (EV_A_ (W)w, EV_SIGNAL);
441	}	550	}
442	}	551	}
443		552
444	static void	553	static void
445	siginit (void)	554	siginit (EV_P)
446	{	555	{
447	#ifndef WIN32	556	#ifndef WIN32
448	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	557	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
449	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	558	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
450		559
…		…
452	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	561	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
453	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	562	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
454	#endif	563	#endif
455		564
456	ev_io_set (&sigev, sigpipe [0], EV_READ);	565	ev_io_set (&sigev, sigpipe [0], EV_READ);
457	ev_io_start (&sigev);	566	ev_io_start (EV_A_ &sigev);
		567	ev_unref (EV_A); /* child watcher should not keep loop alive */
458	}	568	}
459		569
460	/*****************************************************************************/	570	/*****************************************************************************/
461		571
462	static struct ev_idle **idles;	572	#ifndef WIN32
463	static int idlemax, idlecnt;
464
465	static struct ev_prepare **prepares;
466	static int preparemax, preparecnt;
467
468	static struct ev_check **checks;
469	static int checkmax, checkcnt;
470
471	/*****************************************************************************/
472		573
473	static struct ev_child *childs [PID_HASHSIZE];	574	static struct ev_child *childs [PID_HASHSIZE];
474	static struct ev_signal childev;	575	static struct ev_signal childev;
475		576
476	#ifndef WIN32
477
478	#ifndef WCONTINUED	577	#ifndef WCONTINUED
479	# define WCONTINUED 0	578	# define WCONTINUED 0
480	#endif	579	#endif
481		580
482	static void	581	static void
483	child_reap (struct ev_signal *sw, int chain, int pid, int status)	582	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
484	{	583	{
485	struct ev_child *w;	584	struct ev_child *w;
486		585
487	for (w = childs [chain & (PID_HASHSIZE - 1)]; w; w = w->next)	586	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
488	if (w->pid == pid || !w->pid)	587	if (w->pid == pid || !w->pid)
489	{	588	{
490	w->priority = sw->priority; /* need to do it *now* */	589	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
491	w->rpid = pid;	590	w->rpid = pid;
492	w->rstatus = status;	591	w->rstatus = status;
493	printf ("rpid %p %d %d\n", w, pid, w->pid);//D
494	event ((W)w, EV_CHILD);	592	event (EV_A_ (W)w, EV_CHILD);
495	}	593	}
496	}	594	}
497		595
498	static void	596	static void
499	childcb (struct ev_signal *sw, int revents)	597	childcb (EV_P_ struct ev_signal *sw, int revents)
500	{	598	{
501	int pid, status;	599	int pid, status;
502		600
503	printf ("chld %x\n", revents);//D
504	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	601	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
505	{	602	{
506	/* make sure we are called again until all childs have been reaped */	603	/* make sure we are called again until all childs have been reaped */
507	event ((W)sw, EV_SIGNAL);	604	event (EV_A_ (W)sw, EV_SIGNAL);
508		605
509	child_reap (sw, pid, pid, status);	606	child_reap (EV_A_ sw, pid, pid, status);
510	child_reap (sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	607	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
511	}	608	}
512	}	609	}
513		610
514	#endif	611	#endif
515		612
…		…
538	ev_version_minor (void)	635	ev_version_minor (void)
539	{	636	{
540	return EV_VERSION_MINOR;	637	return EV_VERSION_MINOR;
541	}	638	}
542		639
543	/* return true if we are running with elevated privileges and ignore env variables */	640	/* return true if we are running with elevated privileges and should ignore env variables */
544	static int	641	static int
545	enable_secure ()	642	enable_secure (void)
546	{	643	{
		644	#ifdef WIN32
		645	return 0;
		646	#else
547	return getuid () != geteuid ()	647	return getuid () != geteuid ()
548	|| getgid () != getegid ();	648	|| getgid () != getegid ();
		649	#endif
549	}	650	}
550		651
551	int ev_init (int methods)	652	int
		653	ev_method (EV_P)
552	{	654	{
		655	return method;
		656	}
		657
		658	static void
		659	loop_init (EV_P_ int methods)
		660	{
553	if (!ev_method)	661	if (!method)
554	{	662	{
555	#if EV_USE_MONOTONIC	663	#if EV_USE_MONOTONIC
556	{	664	{
557	struct timespec ts;	665	struct timespec ts;
558	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	666	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
559	have_monotonic = 1;	667	have_monotonic = 1;
560	}	668	}
561	#endif	669	#endif
562		670
563	ev_now = ev_time ();	671	rt_now = ev_time ();
564	now = get_clock ();	672	mn_now = get_clock ();
565	now_floor = now;	673	now_floor = mn_now;
566	diff = ev_now - now;	674	rtmn_diff = rt_now - mn_now;
567
568	if (pipe (sigpipe))
569	return 0;
570		675
571	if (methods == EVMETHOD_AUTO)	676	if (methods == EVMETHOD_AUTO)
572	if (!enable_secure () && getenv ("LIBEV_METHODS"))	677	if (!enable_secure () && getenv ("LIBEV_METHODS"))
573	methods = atoi (getenv ("LIBEV_METHODS"));	678	methods = atoi (getenv ("LIBEV_METHODS"));
574	else	679	else
575	methods = EVMETHOD_ANY;	680	methods = EVMETHOD_ANY;
576		681
577	ev_method = 0;	682	method = 0;
		683	#if EV_USE_WIN32
		684	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		685	#endif
578	#if EV_USE_KQUEUE	686	#if EV_USE_KQUEUE
579	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	687	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
580	#endif	688	#endif
581	#if EV_USE_EPOLL	689	#if EV_USE_EPOLL
582	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	690	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
583	#endif	691	#endif
584	#if EV_USE_POLL	692	#if EV_USE_POLL
585	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	693	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
586	#endif	694	#endif
587	#if EV_USE_SELECT	695	#if EV_USE_SELECT
588	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	696	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
589	#endif	697	#endif
		698	}
		699	}
590		700
		701	void
		702	loop_destroy (EV_P)
		703	{
		704	int i;
		705
		706	#if EV_USE_WIN32
		707	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		708	#endif
		709	#if EV_USE_KQUEUE
		710	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		711	#endif
		712	#if EV_USE_EPOLL
		713	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		714	#endif
		715	#if EV_USE_POLL
		716	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		717	#endif
		718	#if EV_USE_SELECT
		719	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		720	#endif
		721
		722	for (i = NUMPRI; i--; )
		723	array_free (pending, [i]);
		724
		725	array_free (fdchange, );
		726	array_free (timer, );
		727	array_free (periodic, );
		728	array_free (idle, );
		729	array_free (prepare, );
		730	array_free (check, );
		731
		732	method = 0;
		733	/*TODO*/
		734	}
		735
		736	void
		737	loop_fork (EV_P)
		738	{
		739	/*TODO*/
		740	#if EV_USE_EPOLL
		741	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		742	#endif
		743	#if EV_USE_KQUEUE
		744	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		745	#endif
		746	}
		747
		748	#if EV_MULTIPLICITY
		749	struct ev_loop *
		750	ev_loop_new (int methods)
		751	{
		752	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		753
		754	memset (loop, 0, sizeof (struct ev_loop));
		755
		756	loop_init (EV_A_ methods);
		757
		758	if (ev_method (EV_A))
		759	return loop;
		760
		761	return 0;
		762	}
		763
		764	void
		765	ev_loop_destroy (EV_P)
		766	{
		767	loop_destroy (EV_A);
		768	ev_free (loop);
		769	}
		770
		771	void
		772	ev_loop_fork (EV_P)
		773	{
		774	loop_fork (EV_A);
		775	}
		776
		777	#endif
		778
		779	#if EV_MULTIPLICITY
		780	struct ev_loop default_loop_struct;
		781	static struct ev_loop *default_loop;
		782
		783	struct ev_loop *
		784	#else
		785	static int default_loop;
		786
		787	int
		788	#endif
		789	ev_default_loop (int methods)
		790	{
		791	if (sigpipe [0] == sigpipe [1])
		792	if (pipe (sigpipe))
		793	return 0;
		794
		795	if (!default_loop)
		796	{
		797	#if EV_MULTIPLICITY
		798	struct ev_loop *loop = default_loop = &default_loop_struct;
		799	#else
		800	default_loop = 1;
		801	#endif
		802
		803	loop_init (EV_A_ methods);
		804
591	if (ev_method)	805	if (ev_method (EV_A))
592	{	806	{
593	ev_watcher_init (&sigev, sigcb);	807	ev_watcher_init (&sigev, sigcb);
594	ev_set_priority (&sigev, EV_MAXPRI);	808	ev_set_priority (&sigev, EV_MAXPRI);
595	siginit ();	809	siginit (EV_A);
596		810
597	#ifndef WIN32	811	#ifndef WIN32
598	ev_signal_init (&childev, childcb, SIGCHLD);	812	ev_signal_init (&childev, childcb, SIGCHLD);
599	ev_set_priority (&childev, EV_MAXPRI);	813	ev_set_priority (&childev, EV_MAXPRI);
600	ev_signal_start (&childev);	814	ev_signal_start (EV_A_ &childev);
		815	ev_unref (EV_A); /* child watcher should not keep loop alive */
601	#endif	816	#endif
602	}	817	}
		818	else
		819	default_loop = 0;
603	}	820	}
604		821
605	return ev_method;	822	return default_loop;
606	}	823	}
607		824
608	/*****************************************************************************/
609
610	void	825	void
611	ev_fork_prepare (void)	826	ev_default_destroy (void)
612	{	827	{
613	/* nop */	828	#if EV_MULTIPLICITY
614	}	829	struct ev_loop *loop = default_loop;
615
616	void
617	ev_fork_parent (void)
618	{
619	/* nop */
620	}
621
622	void
623	ev_fork_child (void)
624	{
625	#if EV_USE_EPOLL
626	if (ev_method == EVMETHOD_EPOLL)
627	epoll_postfork_child ();
628	#endif	830	#endif
629		831
		832	ev_ref (EV_A); /* child watcher */
		833	ev_signal_stop (EV_A_ &childev);
		834
		835	ev_ref (EV_A); /* signal watcher */
630	ev_io_stop (&sigev);	836	ev_io_stop (EV_A_ &sigev);
		837
		838	close (sigpipe [0]); sigpipe [0] = 0;
		839	close (sigpipe [1]); sigpipe [1] = 0;
		840
		841	loop_destroy (EV_A);
		842	}
		843
		844	void
		845	ev_default_fork (void)
		846	{
		847	#if EV_MULTIPLICITY
		848	struct ev_loop *loop = default_loop;
		849	#endif
		850
		851	loop_fork (EV_A);
		852
		853	ev_io_stop (EV_A_ &sigev);
631	close (sigpipe [0]);	854	close (sigpipe [0]);
632	close (sigpipe [1]);	855	close (sigpipe [1]);
633	pipe (sigpipe);	856	pipe (sigpipe);
		857
		858	ev_ref (EV_A); /* signal watcher */
634	siginit ();	859	siginit (EV_A);
635	}	860	}
636		861
637	/*****************************************************************************/	862	/*****************************************************************************/
638		863
639	static void	864	static void
640	call_pending (void)	865	call_pending (EV_P)
641	{	866	{
642	int pri;	867	int pri;
643		868
644	for (pri = NUMPRI; pri--; )	869	for (pri = NUMPRI; pri--; )
645	while (pendingcnt [pri])	870	while (pendingcnt [pri])
…		…
647	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	872	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
648		873
649	if (p->w)	874	if (p->w)
650	{	875	{
651	p->w->pending = 0;	876	p->w->pending = 0;
652	p->w->cb (p->w, p->events);	877	p->w->cb (EV_A_ p->w, p->events);
653	}	878	}
654	}	879	}
655	}	880	}
656		881
657	static void	882	static void
658	timers_reify (void)	883	timers_reify (EV_P)
659	{	884	{
660	while (timercnt && timers [0]->at <= now)	885	while (timercnt && ((WT)timers [0])->at <= mn_now)
661	{	886	{
662	struct ev_timer *w = timers [0];	887	struct ev_timer *w = timers [0];
		888
		889	assert (("inactive timer on timer heap detected", ev_is_active (w)));
663		890
664	/* first reschedule or stop timer */	891	/* first reschedule or stop timer */
665	if (w->repeat)	892	if (w->repeat)
666	{	893	{
667	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	894	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
668	w->at = now + w->repeat;	895	((WT)w)->at = mn_now + w->repeat;
669	downheap ((WT *)timers, timercnt, 0);	896	downheap ((WT *)timers, timercnt, 0);
670	}	897	}
671	else	898	else
672	ev_timer_stop (w); /* nonrepeating: stop timer */	899	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
673		900
674	event ((W)w, EV_TIMEOUT);	901	event (EV_A_ (W)w, EV_TIMEOUT);
675	}	902	}
676	}	903	}
677		904
678	static void	905	static void
679	periodics_reify (void)	906	periodics_reify (EV_P)
680	{	907	{
681	while (periodiccnt && periodics [0]->at <= ev_now)	908	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
682	{	909	{
683	struct ev_periodic *w = periodics [0];	910	struct ev_periodic *w = periodics [0];
		911
		912	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
684		913
685	/* first reschedule or stop timer */	914	/* first reschedule or stop timer */
686	if (w->interval)	915	if (w->interval)
687	{	916	{
688	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	917	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
689	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	918	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
690	downheap ((WT *)periodics, periodiccnt, 0);	919	downheap ((WT *)periodics, periodiccnt, 0);
691	}	920	}
692	else	921	else
693	ev_periodic_stop (w); /* nonrepeating: stop timer */	922	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
694		923
695	event ((W)w, EV_PERIODIC);	924	event (EV_A_ (W)w, EV_PERIODIC);
696	}	925	}
697	}	926	}
698		927
699	static void	928	static void
700	periodics_reschedule (ev_tstamp diff)	929	periodics_reschedule (EV_P)
701	{	930	{
702	int i;	931	int i;
703		932
704	/* adjust periodics after time jump */	933	/* adjust periodics after time jump */
705	for (i = 0; i < periodiccnt; ++i)	934	for (i = 0; i < periodiccnt; ++i)
706	{	935	{
707	struct ev_periodic *w = periodics [i];	936	struct ev_periodic *w = periodics [i];
708		937
709	if (w->interval)	938	if (w->interval)
710	{	939	{
711	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	940	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
712		941
713	if (fabs (diff) >= 1e-4)	942	if (fabs (diff) >= 1e-4)
714	{	943	{
715	ev_periodic_stop (w);	944	ev_periodic_stop (EV_A_ w);
716	ev_periodic_start (w);	945	ev_periodic_start (EV_A_ w);
717		946
718	i = 0; /* restart loop, inefficient, but time jumps should be rare */	947	i = 0; /* restart loop, inefficient, but time jumps should be rare */
719	}	948	}
720	}	949	}
721	}	950	}
722	}	951	}
723		952
724	static int	953	inline int
725	time_update_monotonic (void)	954	time_update_monotonic (EV_P)
726	{	955	{
727	now = get_clock ();	956	mn_now = get_clock ();
728		957
729	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	958	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
730	{	959	{
731	ev_now = now + diff;	960	rt_now = rtmn_diff + mn_now;
732	return 0;	961	return 0;
733	}	962	}
734	else	963	else
735	{	964	{
736	now_floor = now;	965	now_floor = mn_now;
737	ev_now = ev_time ();	966	rt_now = ev_time ();
738	return 1;	967	return 1;
739	}	968	}
740	}	969	}
741		970
742	static void	971	static void
743	time_update (void)	972	time_update (EV_P)
744	{	973	{
745	int i;	974	int i;
746		975
747	#if EV_USE_MONOTONIC	976	#if EV_USE_MONOTONIC
748	if (expect_true (have_monotonic))	977	if (expect_true (have_monotonic))
749	{	978	{
750	if (time_update_monotonic ())	979	if (time_update_monotonic (EV_A))
751	{	980	{
752	ev_tstamp odiff = diff;	981	ev_tstamp odiff = rtmn_diff;
753		982
754	for (i = 4; --i; ) /* loop a few times, before making important decisions */	983	for (i = 4; --i; ) /* loop a few times, before making important decisions */
755	{	984	{
756	diff = ev_now - now;	985	rtmn_diff = rt_now - mn_now;
757		986
758	if (fabs (odiff - diff) < MIN_TIMEJUMP)	987	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
759	return; /* all is well */	988	return; /* all is well */
760		989
761	ev_now = ev_time ();	990	rt_now = ev_time ();
762	now = get_clock ();	991	mn_now = get_clock ();
763	now_floor = now;	992	now_floor = mn_now;
764	}	993	}
765		994
766	periodics_reschedule (diff - odiff);	995	periodics_reschedule (EV_A);
767	/* no timer adjustment, as the monotonic clock doesn't jump */	996	/* no timer adjustment, as the monotonic clock doesn't jump */
		997	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
768	}	998	}
769	}	999	}
770	else	1000	else
771	#endif	1001	#endif
772	{	1002	{
773	ev_now = ev_time ();	1003	rt_now = ev_time ();
774		1004
775	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1005	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
776	{	1006	{
777	periodics_reschedule (ev_now - now);	1007	periodics_reschedule (EV_A);
778		1008
779	/* adjust timers. this is easy, as the offset is the same for all */	1009	/* adjust timers. this is easy, as the offset is the same for all */
780	for (i = 0; i < timercnt; ++i)	1010	for (i = 0; i < timercnt; ++i)
781	timers [i]->at += diff;	1011	((WT)timers [i])->at += rt_now - mn_now;
782	}	1012	}
783		1013
784	now = ev_now;	1014	mn_now = rt_now;
785	}	1015	}
786	}	1016	}
787		1017
788	int ev_loop_done;	1018	void
		1019	ev_ref (EV_P)
		1020	{
		1021	++activecnt;
		1022	}
789		1023
		1024	void
		1025	ev_unref (EV_P)
		1026	{
		1027	--activecnt;
		1028	}
		1029
		1030	static int loop_done;
		1031
		1032	void
790	void ev_loop (int flags)	1033	ev_loop (EV_P_ int flags)
791	{	1034	{
792	double block;	1035	double block;
793	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1036	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
794		1037
795	do	1038	do
796	{	1039	{
797	/* queue check watchers (and execute them) */	1040	/* queue check watchers (and execute them) */
798	if (expect_false (preparecnt))	1041	if (expect_false (preparecnt))
799	{	1042	{
800	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1043	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
801	call_pending ();	1044	call_pending (EV_A);
802	}	1045	}
803		1046
804	/* update fd-related kernel structures */	1047	/* update fd-related kernel structures */
805	fd_reify ();	1048	fd_reify (EV_A);
806		1049
807	/* calculate blocking time */	1050	/* calculate blocking time */
808		1051
809	/* we only need this for !monotonic clockor timers, but as we basically	1052	/* we only need this for !monotonic clockor timers, but as we basically
810	always have timers, we just calculate it always */	1053	always have timers, we just calculate it always */
811	#if EV_USE_MONOTONIC	1054	#if EV_USE_MONOTONIC
812	if (expect_true (have_monotonic))	1055	if (expect_true (have_monotonic))
813	time_update_monotonic ();	1056	time_update_monotonic (EV_A);
814	else	1057	else
815	#endif	1058	#endif
816	{	1059	{
817	ev_now = ev_time ();	1060	rt_now = ev_time ();
818	now = ev_now;	1061	mn_now = rt_now;
819	}	1062	}
820		1063
821	if (flags & EVLOOP_NONBLOCK || idlecnt)	1064	if (flags & EVLOOP_NONBLOCK || idlecnt)
822	block = 0.;	1065	block = 0.;
823	else	1066	else
824	{	1067	{
825	block = MAX_BLOCKTIME;	1068	block = MAX_BLOCKTIME;
826		1069
827	if (timercnt)	1070	if (timercnt)
828	{	1071	{
829	ev_tstamp to = timers [0]->at - now + method_fudge;	1072	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
830	if (block > to) block = to;	1073	if (block > to) block = to;
831	}	1074	}
832		1075
833	if (periodiccnt)	1076	if (periodiccnt)
834	{	1077	{
835	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1078	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
836	if (block > to) block = to;	1079	if (block > to) block = to;
837	}	1080	}
838		1081
839	if (block < 0.) block = 0.;	1082	if (block < 0.) block = 0.;
840	}	1083	}
841		1084
842	method_poll (block);	1085	method_poll (EV_A_ block);
843		1086
844	/* update ev_now, do magic */	1087	/* update rt_now, do magic */
845	time_update ();	1088	time_update (EV_A);
846		1089
847	/* queue pending timers and reschedule them */	1090	/* queue pending timers and reschedule them */
848	timers_reify (); /* relative timers called last */	1091	timers_reify (EV_A); /* relative timers called last */
849	periodics_reify (); /* absolute timers called first */	1092	periodics_reify (EV_A); /* absolute timers called first */
850		1093
851	/* queue idle watchers unless io or timers are pending */	1094	/* queue idle watchers unless io or timers are pending */
852	if (!pendingcnt)	1095	if (!pendingcnt)
853	queue_events ((W *)idles, idlecnt, EV_IDLE);	1096	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
854		1097
855	/* queue check watchers, to be executed first */	1098	/* queue check watchers, to be executed first */
856	if (checkcnt)	1099	if (checkcnt)
857	queue_events ((W *)checks, checkcnt, EV_CHECK);	1100	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
858		1101
859	call_pending ();	1102	call_pending (EV_A);
860	}	1103	}
861	while (!ev_loop_done);	1104	while (activecnt && !loop_done);
862		1105
863	if (ev_loop_done != 2)	1106	if (loop_done != 2)
864	ev_loop_done = 0;	1107	loop_done = 0;
		1108	}
		1109
		1110	void
		1111	ev_unloop (EV_P_ int how)
		1112	{
		1113	loop_done = how;
865	}	1114	}
866		1115
867	/*****************************************************************************/	1116	/*****************************************************************************/
868		1117
869	static void	1118	inline void
870	wlist_add (WL *head, WL elem)	1119	wlist_add (WL *head, WL elem)
871	{	1120	{
872	elem->next = *head;	1121	elem->next = *head;
873	*head = elem;	1122	*head = elem;
874	}	1123	}
875		1124
876	static void	1125	inline void
877	wlist_del (WL *head, WL elem)	1126	wlist_del (WL *head, WL elem)
878	{	1127	{
879	while (*head)	1128	while (*head)
880	{	1129	{
881	if (*head == elem)	1130	if (*head == elem)
…		…
886		1135
887	head = &(*head)->next;	1136	head = &(*head)->next;
888	}	1137	}
889	}	1138	}
890		1139
891	static void	1140	inline void
892	ev_clear_pending (W w)	1141	ev_clear_pending (EV_P_ W w)
893	{	1142	{
894	if (w->pending)	1143	if (w->pending)
895	{	1144	{
896	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1145	pendings [ABSPRI (w)][w->pending - 1].w = 0;
897	w->pending = 0;	1146	w->pending = 0;
898	}	1147	}
899	}	1148	}
900		1149
901	static void	1150	inline void
902	ev_start (W w, int active)	1151	ev_start (EV_P_ W w, int active)
903	{	1152	{
904	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1153	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
905	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1154	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
906		1155
907	w->active = active;	1156	w->active = active;
		1157	ev_ref (EV_A);
908	}	1158	}
909		1159
910	static void	1160	inline void
911	ev_stop (W w)	1161	ev_stop (EV_P_ W w)
912	{	1162	{
		1163	ev_unref (EV_A);
913	w->active = 0;	1164	w->active = 0;
914	}	1165	}
915		1166
916	/*****************************************************************************/	1167	/*****************************************************************************/
917		1168
918	void	1169	void
919	ev_io_start (struct ev_io *w)	1170	ev_io_start (EV_P_ struct ev_io *w)
920	{	1171	{
921	int fd = w->fd;	1172	int fd = w->fd;
922		1173
923	if (ev_is_active (w))	1174	if (ev_is_active (w))
924	return;	1175	return;
925		1176
926	assert (("ev_io_start called with negative fd", fd >= 0));	1177	assert (("ev_io_start called with negative fd", fd >= 0));
927		1178
928	ev_start ((W)w, 1);	1179	ev_start (EV_A_ (W)w, 1);
929	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1180	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
930	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1181	wlist_add ((WL *)&anfds[fd].head, (WL)w);
931		1182
932	fd_change (fd);	1183	fd_change (EV_A_ fd);
933	}	1184	}
934		1185
935	void	1186	void
936	ev_io_stop (struct ev_io *w)	1187	ev_io_stop (EV_P_ struct ev_io *w)
937	{	1188	{
938	ev_clear_pending ((W)w);	1189	ev_clear_pending (EV_A_ (W)w);
939	if (!ev_is_active (w))	1190	if (!ev_is_active (w))
940	return;	1191	return;
941		1192
942	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1193	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
943	ev_stop ((W)w);	1194	ev_stop (EV_A_ (W)w);
944		1195
945	fd_change (w->fd);	1196	fd_change (EV_A_ w->fd);
946	}	1197	}
947		1198
948	void	1199	void
949	ev_timer_start (struct ev_timer *w)	1200	ev_timer_start (EV_P_ struct ev_timer *w)
950	{	1201	{
951	if (ev_is_active (w))	1202	if (ev_is_active (w))
952	return;	1203	return;
953		1204
954	w->at += now;	1205	((WT)w)->at += mn_now;
955		1206
956	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1207	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
957		1208
958	ev_start ((W)w, ++timercnt);	1209	ev_start (EV_A_ (W)w, ++timercnt);
959	array_needsize (timers, timermax, timercnt, );	1210	array_needsize (timers, timermax, timercnt, );
960	timers [timercnt - 1] = w;	1211	timers [timercnt - 1] = w;
961	upheap ((WT *)timers, timercnt - 1);	1212	upheap ((WT *)timers, timercnt - 1);
962	}
963		1213
		1214	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1215	}
		1216
964	void	1217	void
965	ev_timer_stop (struct ev_timer *w)	1218	ev_timer_stop (EV_P_ struct ev_timer *w)
966	{	1219	{
967	ev_clear_pending ((W)w);	1220	ev_clear_pending (EV_A_ (W)w);
968	if (!ev_is_active (w))	1221	if (!ev_is_active (w))
969	return;	1222	return;
970		1223
		1224	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1225
971	if (w->active < timercnt--)	1226	if (((W)w)->active < timercnt--)
972	{	1227	{
973	timers [w->active - 1] = timers [timercnt];	1228	timers [((W)w)->active - 1] = timers [timercnt];
974	downheap ((WT *)timers, timercnt, w->active - 1);	1229	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
975	}	1230	}
976		1231
977	w->at = w->repeat;	1232	((WT)w)->at = w->repeat;
978		1233
979	ev_stop ((W)w);	1234	ev_stop (EV_A_ (W)w);
980	}	1235	}
981		1236
982	void	1237	void
983	ev_timer_again (struct ev_timer *w)	1238	ev_timer_again (EV_P_ struct ev_timer *w)
984	{	1239	{
985	if (ev_is_active (w))	1240	if (ev_is_active (w))
986	{	1241	{
987	if (w->repeat)	1242	if (w->repeat)
988	{	1243	{
989	w->at = now + w->repeat;	1244	((WT)w)->at = mn_now + w->repeat;
990	downheap ((WT *)timers, timercnt, w->active - 1);	1245	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
991	}	1246	}
992	else	1247	else
993	ev_timer_stop (w);	1248	ev_timer_stop (EV_A_ w);
994	}	1249	}
995	else if (w->repeat)	1250	else if (w->repeat)
996	ev_timer_start (w);	1251	ev_timer_start (EV_A_ w);
997	}	1252	}
998		1253
999	void	1254	void
1000	ev_periodic_start (struct ev_periodic *w)	1255	ev_periodic_start (EV_P_ struct ev_periodic *w)
1001	{	1256	{
1002	if (ev_is_active (w))	1257	if (ev_is_active (w))
1003	return;	1258	return;
1004		1259
1005	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1260	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1006		1261
1007	/* this formula differs from the one in periodic_reify because we do not always round up */	1262	/* this formula differs from the one in periodic_reify because we do not always round up */
1008	if (w->interval)	1263	if (w->interval)
1009	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1264	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
1010		1265
1011	ev_start ((W)w, ++periodiccnt);	1266	ev_start (EV_A_ (W)w, ++periodiccnt);
1012	array_needsize (periodics, periodicmax, periodiccnt, );	1267	array_needsize (periodics, periodicmax, periodiccnt, );
1013	periodics [periodiccnt - 1] = w;	1268	periodics [periodiccnt - 1] = w;
1014	upheap ((WT *)periodics, periodiccnt - 1);	1269	upheap ((WT *)periodics, periodiccnt - 1);
1015	}
1016		1270
		1271	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1272	}
		1273
1017	void	1274	void
1018	ev_periodic_stop (struct ev_periodic *w)	1275	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1019	{	1276	{
1020	ev_clear_pending ((W)w);	1277	ev_clear_pending (EV_A_ (W)w);
1021	if (!ev_is_active (w))	1278	if (!ev_is_active (w))
1022	return;	1279	return;
1023		1280
		1281	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1282
1024	if (w->active < periodiccnt--)	1283	if (((W)w)->active < periodiccnt--)
1025	{	1284	{
1026	periodics [w->active - 1] = periodics [periodiccnt];	1285	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1027	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1286	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1028	}	1287	}
1029		1288
1030	ev_stop ((W)w);	1289	ev_stop (EV_A_ (W)w);
		1290	}
		1291
		1292	void
		1293	ev_idle_start (EV_P_ struct ev_idle *w)
		1294	{
		1295	if (ev_is_active (w))
		1296	return;
		1297
		1298	ev_start (EV_A_ (W)w, ++idlecnt);
		1299	array_needsize (idles, idlemax, idlecnt, );
		1300	idles [idlecnt - 1] = w;
		1301	}
		1302
		1303	void
		1304	ev_idle_stop (EV_P_ struct ev_idle *w)
		1305	{
		1306	ev_clear_pending (EV_A_ (W)w);
		1307	if (ev_is_active (w))
		1308	return;
		1309
		1310	idles [((W)w)->active - 1] = idles [--idlecnt];
		1311	ev_stop (EV_A_ (W)w);
		1312	}
		1313
		1314	void
		1315	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1316	{
		1317	if (ev_is_active (w))
		1318	return;
		1319
		1320	ev_start (EV_A_ (W)w, ++preparecnt);
		1321	array_needsize (prepares, preparemax, preparecnt, );
		1322	prepares [preparecnt - 1] = w;
		1323	}
		1324
		1325	void
		1326	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1327	{
		1328	ev_clear_pending (EV_A_ (W)w);
		1329	if (ev_is_active (w))
		1330	return;
		1331
		1332	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1333	ev_stop (EV_A_ (W)w);
		1334	}
		1335
		1336	void
		1337	ev_check_start (EV_P_ struct ev_check *w)
		1338	{
		1339	if (ev_is_active (w))
		1340	return;
		1341
		1342	ev_start (EV_A_ (W)w, ++checkcnt);
		1343	array_needsize (checks, checkmax, checkcnt, );
		1344	checks [checkcnt - 1] = w;
		1345	}
		1346
		1347	void
		1348	ev_check_stop (EV_P_ struct ev_check *w)
		1349	{
		1350	ev_clear_pending (EV_A_ (W)w);
		1351	if (ev_is_active (w))
		1352	return;
		1353
		1354	checks [((W)w)->active - 1] = checks [--checkcnt];
		1355	ev_stop (EV_A_ (W)w);
1031	}	1356	}
1032		1357
1033	#ifndef SA_RESTART	1358	#ifndef SA_RESTART
1034	# define SA_RESTART 0	1359	# define SA_RESTART 0
1035	#endif	1360	#endif
1036		1361
1037	void	1362	void
1038	ev_signal_start (struct ev_signal *w)	1363	ev_signal_start (EV_P_ struct ev_signal *w)
1039	{	1364	{
		1365	#if EV_MULTIPLICITY
		1366	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1367	#endif
1040	if (ev_is_active (w))	1368	if (ev_is_active (w))
1041	return;	1369	return;
1042		1370
1043	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1371	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1044		1372
1045	ev_start ((W)w, 1);	1373	ev_start (EV_A_ (W)w, 1);
1046	array_needsize (signals, signalmax, w->signum, signals_init);	1374	array_needsize (signals, signalmax, w->signum, signals_init);
1047	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1375	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1048		1376
1049	if (!w->next)	1377	if (!((WL)w)->next)
1050	{	1378	{
		1379	#if WIN32
		1380	signal (w->signum, sighandler);
		1381	#else
1051	struct sigaction sa;	1382	struct sigaction sa;
1052	sa.sa_handler = sighandler;	1383	sa.sa_handler = sighandler;
1053	sigfillset (&sa.sa_mask);	1384	sigfillset (&sa.sa_mask);
1054	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1385	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1055	sigaction (w->signum, &sa, 0);	1386	sigaction (w->signum, &sa, 0);
		1387	#endif
1056	}	1388	}
1057	}	1389	}
1058		1390
1059	void	1391	void
1060	ev_signal_stop (struct ev_signal *w)	1392	ev_signal_stop (EV_P_ struct ev_signal *w)
1061	{	1393	{
1062	ev_clear_pending ((W)w);	1394	ev_clear_pending (EV_A_ (W)w);
1063	if (!ev_is_active (w))	1395	if (!ev_is_active (w))
1064	return;	1396	return;
1065		1397
1066	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1398	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1067	ev_stop ((W)w);	1399	ev_stop (EV_A_ (W)w);
1068		1400
1069	if (!signals [w->signum - 1].head)	1401	if (!signals [w->signum - 1].head)
1070	signal (w->signum, SIG_DFL);	1402	signal (w->signum, SIG_DFL);
1071	}	1403	}
1072		1404
1073	void	1405	void
1074	ev_idle_start (struct ev_idle *w)	1406	ev_child_start (EV_P_ struct ev_child *w)
1075	{	1407	{
		1408	#if EV_MULTIPLICITY
		1409	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1410	#endif
1076	if (ev_is_active (w))	1411	if (ev_is_active (w))
1077	return;	1412	return;
1078		1413
1079	ev_start ((W)w, ++idlecnt);	1414	ev_start (EV_A_ (W)w, 1);
1080	array_needsize (idles, idlemax, idlecnt, );	1415	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1081	idles [idlecnt - 1] = w;
1082	}	1416	}
1083		1417
1084	void	1418	void
1085	ev_idle_stop (struct ev_idle *w)	1419	ev_child_stop (EV_P_ struct ev_child *w)
1086	{	1420	{
1087	ev_clear_pending ((W)w);	1421	ev_clear_pending (EV_A_ (W)w);
1088	if (ev_is_active (w))	1422	if (ev_is_active (w))
1089	return;	1423	return;
1090		1424
1091	idles [w->active - 1] = idles [--idlecnt];
1092	ev_stop ((W)w);
1093	}
1094
1095	void
1096	ev_prepare_start (struct ev_prepare *w)
1097	{
1098	if (ev_is_active (w))
1099	return;
1100
1101	ev_start ((W)w, ++preparecnt);
1102	array_needsize (prepares, preparemax, preparecnt, );
1103	prepares [preparecnt - 1] = w;
1104	}
1105
1106	void
1107	ev_prepare_stop (struct ev_prepare *w)
1108	{
1109	ev_clear_pending ((W)w);
1110	if (ev_is_active (w))
1111	return;
1112
1113	prepares [w->active - 1] = prepares [--preparecnt];
1114	ev_stop ((W)w);
1115	}
1116
1117	void
1118	ev_check_start (struct ev_check *w)
1119	{
1120	if (ev_is_active (w))
1121	return;
1122
1123	ev_start ((W)w, ++checkcnt);
1124	array_needsize (checks, checkmax, checkcnt, );
1125	checks [checkcnt - 1] = w;
1126	}
1127
1128	void
1129	ev_check_stop (struct ev_check *w)
1130	{
1131	ev_clear_pending ((W)w);
1132	if (ev_is_active (w))
1133	return;
1134
1135	checks [w->active - 1] = checks [--checkcnt];
1136	ev_stop ((W)w);
1137	}
1138
1139	void
1140	ev_child_start (struct ev_child *w)
1141	{
1142	if (ev_is_active (w))
1143	return;
1144
1145	ev_start ((W)w, 1);
1146	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1147	}
1148
1149	void
1150	ev_child_stop (struct ev_child *w)
1151	{
1152	ev_clear_pending ((W)w);
1153	if (ev_is_active (w))
1154	return;
1155
1156	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1425	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1157	ev_stop ((W)w);	1426	ev_stop (EV_A_ (W)w);
1158	}	1427	}
1159		1428
1160	/*****************************************************************************/	1429	/*****************************************************************************/
1161		1430
1162	struct ev_once	1431	struct ev_once
…		…
1166	void (*cb)(int revents, void *arg);	1435	void (*cb)(int revents, void *arg);
1167	void *arg;	1436	void *arg;
1168	};	1437	};
1169		1438
1170	static void	1439	static void
1171	once_cb (struct ev_once *once, int revents)	1440	once_cb (EV_P_ struct ev_once *once, int revents)
1172	{	1441	{
1173	void (*cb)(int revents, void *arg) = once->cb;	1442	void (*cb)(int revents, void *arg) = once->cb;
1174	void *arg = once->arg;	1443	void *arg = once->arg;
1175		1444
1176	ev_io_stop (&once->io);	1445	ev_io_stop (EV_A_ &once->io);
1177	ev_timer_stop (&once->to);	1446	ev_timer_stop (EV_A_ &once->to);
1178	free (once);	1447	ev_free (once);
1179		1448
1180	cb (revents, arg);	1449	cb (revents, arg);
1181	}	1450	}
1182		1451
1183	static void	1452	static void
1184	once_cb_io (struct ev_io *w, int revents)	1453	once_cb_io (EV_P_ struct ev_io *w, int revents)
1185	{	1454	{
1186	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1455	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1187	}	1456	}
1188		1457
1189	static void	1458	static void
1190	once_cb_to (struct ev_timer *w, int revents)	1459	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1191	{	1460	{
1192	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1461	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1193	}	1462	}
1194		1463
1195	void	1464	void
1196	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1465	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1197	{	1466	{
1198	struct ev_once *once = malloc (sizeof (struct ev_once));	1467	struct ev_once *once = ev_malloc (sizeof (struct ev_once));
1199		1468
1200	if (!once)	1469	if (!once)
1201	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1470	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1202	else	1471	else
1203	{	1472	{
…		…
1206		1475
1207	ev_watcher_init (&once->io, once_cb_io);	1476	ev_watcher_init (&once->io, once_cb_io);
1208	if (fd >= 0)	1477	if (fd >= 0)
1209	{	1478	{
1210	ev_io_set (&once->io, fd, events);	1479	ev_io_set (&once->io, fd, events);
1211	ev_io_start (&once->io);	1480	ev_io_start (EV_A_ &once->io);
1212	}	1481	}
1213		1482
1214	ev_watcher_init (&once->to, once_cb_to);	1483	ev_watcher_init (&once->to, once_cb_to);
1215	if (timeout >= 0.)	1484	if (timeout >= 0.)
1216	{	1485	{
1217	ev_timer_set (&once->to, timeout, 0.);	1486	ev_timer_set (&once->to, timeout, 0.);
1218	ev_timer_start (&once->to);	1487	ev_timer_start (EV_A_ &once->to);
1219	}	1488	}
1220	}	1489	}
1221	}	1490	}
1222		1491
1223	/*****************************************************************************/
1224
1225	#if 0
1226
1227	struct ev_io wio;
1228
1229	static void
1230	sin_cb (struct ev_io *w, int revents)
1231	{
1232	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1233	}
1234
1235	static void
1236	ocb (struct ev_timer *w, int revents)
1237	{
1238	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1239	ev_timer_stop (w);
1240	ev_timer_start (w);
1241	}
1242
1243	static void
1244	scb (struct ev_signal *w, int revents)
1245	{
1246	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1247	ev_io_stop (&wio);
1248	ev_io_start (&wio);
1249	}
1250
1251	static void
1252	gcb (struct ev_signal *w, int revents)
1253	{
1254	fprintf (stderr, "generic %x\n", revents);
1255
1256	}
1257
1258	int main (void)
1259	{
1260	ev_init (0);
1261
1262	ev_io_init (&wio, sin_cb, 0, EV_READ);
1263	ev_io_start (&wio);
1264
1265	struct ev_timer t[10000];
1266
1267	#if 0
1268	int i;
1269	for (i = 0; i < 10000; ++i)
1270	{
1271	struct ev_timer *w = t + i;
1272	ev_watcher_init (w, ocb, i);
1273	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1274	ev_timer_start (w);
1275	if (drand48 () < 0.5)
1276	ev_timer_stop (w);
1277	}
1278	#endif
1279
1280	struct ev_timer t1;
1281	ev_timer_init (&t1, ocb, 5, 10);
1282	ev_timer_start (&t1);
1283
1284	struct ev_signal sig;
1285	ev_signal_init (&sig, scb, SIGQUIT);
1286	ev_signal_start (&sig);
1287
1288	struct ev_check cw;
1289	ev_check_init (&cw, gcb);
1290	ev_check_start (&cw);
1291
1292	struct ev_idle iw;
1293	ev_idle_init (&iw, gcb);
1294	ev_idle_start (&iw);
1295
1296	ev_loop (0);
1297
1298	return 0;
1299	}
1300
1301	#endif
1302
1303
1304
1305

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