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Comparing libev/ev.c (file contents):
Revision 1.47 by root, Sat Nov 3 11:44:44 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	{
		527	int old_errno = errno;
418	gotsig = 1;	528	gotsig = 1;
419	write (sigpipe [1], &signum, 1);	529	write (sigpipe [1], &signum, 1);
		530	errno = old_errno;
420	}	531	}
421	}	532	}
422		533
423	static void	534	static void
424	sigcb (struct ev_io *iow, int revents)	535	sigcb (EV_P_ struct ev_io *iow, int revents)
425	{	536	{
426	struct ev_signal *w;	537	WL w;
427	int signum;	538	int signum;
428		539
429	read (sigpipe [0], &revents, 1);	540	read (sigpipe [0], &revents, 1);
430	gotsig = 0;	541	gotsig = 0;
431		542
…		…
433	if (signals [signum].gotsig)	544	if (signals [signum].gotsig)
434	{	545	{
435	signals [signum].gotsig = 0;	546	signals [signum].gotsig = 0;
436		547
437	for (w = signals [signum].head; w; w = w->next)	548	for (w = signals [signum].head; w; w = w->next)
438	event ((W)w, EV_SIGNAL);	549	event (EV_A_ (W)w, EV_SIGNAL);
439	}	550	}
440	}	551	}
441		552
442	static void	553	static void
443	siginit (void)	554	siginit (EV_P)
444	{	555	{
445	#ifndef WIN32	556	#ifndef WIN32
446	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	557	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
447	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	558	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
448		559
…		…
450	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	561	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
451	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	562	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
452	#endif	563	#endif
453		564
454	ev_io_set (&sigev, sigpipe [0], EV_READ);	565	ev_io_set (&sigev, sigpipe [0], EV_READ);
455	ev_io_start (&sigev);	566	ev_io_start (EV_A_ &sigev);
		567	ev_unref (EV_A); /* child watcher should not keep loop alive */
456	}	568	}
457		569
458	/*****************************************************************************/	570	/*****************************************************************************/
459		571
460	static struct ev_idle **idles;	572	#ifndef WIN32
461	static int idlemax, idlecnt;
462
463	static struct ev_prepare **prepares;
464	static int preparemax, preparecnt;
465
466	static struct ev_check **checks;
467	static int checkmax, checkcnt;
468
469	/*****************************************************************************/
470		573
471	static struct ev_child *childs [PID_HASHSIZE];	574	static struct ev_child *childs [PID_HASHSIZE];
472	static struct ev_signal childev;	575	static struct ev_signal childev;
473		576
474	#ifndef WIN32
475
476	#ifndef WCONTINUED	577	#ifndef WCONTINUED
477	# define WCONTINUED 0	578	# define WCONTINUED 0
478	#endif	579	#endif
479		580
480	static void	581	static void
481	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)
482	{	583	{
483	struct ev_child *w;	584	struct ev_child *w;
484		585
485	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)
486	if (w->pid == pid || !w->pid)	587	if (w->pid == pid || !w->pid)
487	{	588	{
488	w->priority = sw->priority; /* need to do it *now* */	589	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
489	w->rpid = pid;	590	w->rpid = pid;
490	w->rstatus = status;	591	w->rstatus = status;
491	printf ("rpid %p %d %d\n", w, pid, w->pid);//D
492	event ((W)w, EV_CHILD);	592	event (EV_A_ (W)w, EV_CHILD);
493	}	593	}
494	}	594	}
495		595
496	static void	596	static void
497	childcb (struct ev_signal *sw, int revents)	597	childcb (EV_P_ struct ev_signal *sw, int revents)
498	{	598	{
499	int pid, status;	599	int pid, status;
500		600
501	printf ("chld %x\n", revents);//D
502	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	601	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
503	{	602	{
504	/* 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 */
505	event ((W)sw, EV_SIGNAL);	604	event (EV_A_ (W)sw, EV_SIGNAL);
506		605
507	child_reap (sw, pid, pid, status);	606	child_reap (EV_A_ sw, pid, pid, status);
508	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 */
509	}	608	}
510	}	609	}
511		610
512	#endif	611	#endif
513		612
…		…
536	ev_version_minor (void)	635	ev_version_minor (void)
537	{	636	{
538	return EV_VERSION_MINOR;	637	return EV_VERSION_MINOR;
539	}	638	}
540		639
541	/* 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 */
542	static int	641	static int
543	enable_secure ()	642	enable_secure (void)
544	{	643	{
		644	#ifdef WIN32
		645	return 0;
		646	#else
545	return getuid () != geteuid ()	647	return getuid () != geteuid ()
546	|| getgid () != getegid ();	648	|| getgid () != getegid ();
		649	#endif
547	}	650	}
548		651
549	int ev_init (int methods)	652	int
		653	ev_method (EV_P)
550	{	654	{
		655	return method;
		656	}
		657
		658	static void
		659	loop_init (EV_P_ int methods)
		660	{
551	if (!ev_method)	661	if (!method)
552	{	662	{
553	#if EV_USE_MONOTONIC	663	#if EV_USE_MONOTONIC
554	{	664	{
555	struct timespec ts;	665	struct timespec ts;
556	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	666	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
557	have_monotonic = 1;	667	have_monotonic = 1;
558	}	668	}
559	#endif	669	#endif
560		670
561	ev_now = ev_time ();	671	rt_now = ev_time ();
562	now = get_clock ();	672	mn_now = get_clock ();
563	now_floor = now;	673	now_floor = mn_now;
564	diff = ev_now - now;	674	rtmn_diff = rt_now - mn_now;
565
566	if (pipe (sigpipe))
567	return 0;
568		675
569	if (methods == EVMETHOD_AUTO)	676	if (methods == EVMETHOD_AUTO)
570	if (!enable_secure () && getenv ("LIBEV_METHODS"))	677	if (!enable_secure () && getenv ("LIBEV_METHODS"))
571	methods = atoi (getenv ("LIBEV_METHODS"));	678	methods = atoi (getenv ("LIBEV_METHODS"));
572	else	679	else
573	methods = EVMETHOD_ANY;	680	methods = EVMETHOD_ANY;
574		681
575	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
576	#if EV_USE_KQUEUE	686	#if EV_USE_KQUEUE
577	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	687	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
578	#endif	688	#endif
579	#if EV_USE_EPOLL	689	#if EV_USE_EPOLL
580	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	690	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
581	#endif	691	#endif
582	#if EV_USE_POLL	692	#if EV_USE_POLL
583	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	693	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
584	#endif	694	#endif
585	#if EV_USE_SELECT	695	#if EV_USE_SELECT
586	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	696	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
587	#endif	697	#endif
		698	}
		699	}
588		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
589	if (ev_method)	805	if (ev_method (EV_A))
590	{	806	{
591	ev_watcher_init (&sigev, sigcb);	807	ev_watcher_init (&sigev, sigcb);
592	ev_set_priority (&sigev, EV_MAXPRI);	808	ev_set_priority (&sigev, EV_MAXPRI);
593	siginit ();	809	siginit (EV_A);
594		810
595	#ifndef WIN32	811	#ifndef WIN32
596	ev_signal_init (&childev, childcb, SIGCHLD);	812	ev_signal_init (&childev, childcb, SIGCHLD);
597	ev_set_priority (&childev, EV_MAXPRI);	813	ev_set_priority (&childev, EV_MAXPRI);
598	ev_signal_start (&childev);	814	ev_signal_start (EV_A_ &childev);
		815	ev_unref (EV_A); /* child watcher should not keep loop alive */
599	#endif	816	#endif
600	}	817	}
		818	else
		819	default_loop = 0;
601	}	820	}
602		821
603	return ev_method;	822	return default_loop;
604	}	823	}
605		824
606	/*****************************************************************************/
607
608	void	825	void
609	ev_fork_prepare (void)	826	ev_default_destroy (void)
610	{	827	{
611	/* nop */	828	#if EV_MULTIPLICITY
612	}	829	struct ev_loop *loop = default_loop;
613
614	void
615	ev_fork_parent (void)
616	{
617	/* nop */
618	}
619
620	void
621	ev_fork_child (void)
622	{
623	#if EV_USE_EPOLL
624	if (ev_method == EVMETHOD_EPOLL)
625	epoll_postfork_child ();
626	#endif	830	#endif
627		831
		832	ev_ref (EV_A); /* child watcher */
		833	ev_signal_stop (EV_A_ &childev);
		834
		835	ev_ref (EV_A); /* signal watcher */
628	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);
629	close (sigpipe [0]);	854	close (sigpipe [0]);
630	close (sigpipe [1]);	855	close (sigpipe [1]);
631	pipe (sigpipe);	856	pipe (sigpipe);
		857
		858	ev_ref (EV_A); /* signal watcher */
632	siginit ();	859	siginit (EV_A);
633	}	860	}
634		861
635	/*****************************************************************************/	862	/*****************************************************************************/
636		863
637	static void	864	static void
638	call_pending (void)	865	call_pending (EV_P)
639	{	866	{
640	int pri;	867	int pri;
641		868
642	for (pri = NUMPRI; pri--; )	869	for (pri = NUMPRI; pri--; )
643	while (pendingcnt [pri])	870	while (pendingcnt [pri])
…		…
645	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	872	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
646		873
647	if (p->w)	874	if (p->w)
648	{	875	{
649	p->w->pending = 0;	876	p->w->pending = 0;
650	p->w->cb (p->w, p->events);	877	p->w->cb (EV_A_ p->w, p->events);
651	}	878	}
652	}	879	}
653	}	880	}
654		881
655	static void	882	static void
656	timers_reify (void)	883	timers_reify (EV_P)
657	{	884	{
658	while (timercnt && timers [0]->at <= now)	885	while (timercnt && ((WT)timers [0])->at <= mn_now)
659	{	886	{
660	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)));
661		890
662	/* first reschedule or stop timer */	891	/* first reschedule or stop timer */
663	if (w->repeat)	892	if (w->repeat)
664	{	893	{
665	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.));
666	w->at = now + w->repeat;	895	((WT)w)->at = mn_now + w->repeat;
667	downheap ((WT *)timers, timercnt, 0);	896	downheap ((WT *)timers, timercnt, 0);
668	}	897	}
669	else	898	else
670	ev_timer_stop (w); /* nonrepeating: stop timer */	899	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
671		900
672	event ((W)w, EV_TIMEOUT);	901	event (EV_A_ (W)w, EV_TIMEOUT);
673	}	902	}
674	}	903	}
675		904
676	static void	905	static void
677	periodics_reify (void)	906	periodics_reify (EV_P)
678	{	907	{
679	while (periodiccnt && periodics [0]->at <= ev_now)	908	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
680	{	909	{
681	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)));
682		913
683	/* first reschedule or stop timer */	914	/* first reschedule or stop timer */
684	if (w->interval)	915	if (w->interval)
685	{	916	{
686	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;
687	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));
688	downheap ((WT *)periodics, periodiccnt, 0);	919	downheap ((WT *)periodics, periodiccnt, 0);
689	}	920	}
690	else	921	else
691	ev_periodic_stop (w); /* nonrepeating: stop timer */	922	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
692		923
693	event ((W)w, EV_PERIODIC);	924	event (EV_A_ (W)w, EV_PERIODIC);
694	}	925	}
695	}	926	}
696		927
697	static void	928	static void
698	periodics_reschedule (ev_tstamp diff)	929	periodics_reschedule (EV_P)
699	{	930	{
700	int i;	931	int i;
701		932
702	/* adjust periodics after time jump */	933	/* adjust periodics after time jump */
703	for (i = 0; i < periodiccnt; ++i)	934	for (i = 0; i < periodiccnt; ++i)
704	{	935	{
705	struct ev_periodic *w = periodics [i];	936	struct ev_periodic *w = periodics [i];
706		937
707	if (w->interval)	938	if (w->interval)
708	{	939	{
709	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;
710		941
711	if (fabs (diff) >= 1e-4)	942	if (fabs (diff) >= 1e-4)
712	{	943	{
713	ev_periodic_stop (w);	944	ev_periodic_stop (EV_A_ w);
714	ev_periodic_start (w);	945	ev_periodic_start (EV_A_ w);
715		946
716	i = 0; /* restart loop, inefficient, but time jumps should be rare */	947	i = 0; /* restart loop, inefficient, but time jumps should be rare */
717	}	948	}
718	}	949	}
719	}	950	}
720	}	951	}
721		952
722	static int	953	inline int
723	time_update_monotonic (void)	954	time_update_monotonic (EV_P)
724	{	955	{
725	now = get_clock ();	956	mn_now = get_clock ();
726		957
727	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	958	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
728	{	959	{
729	ev_now = now + diff;	960	rt_now = rtmn_diff + mn_now;
730	return 0;	961	return 0;
731	}	962	}
732	else	963	else
733	{	964	{
734	now_floor = now;	965	now_floor = mn_now;
735	ev_now = ev_time ();	966	rt_now = ev_time ();
736	return 1;	967	return 1;
737	}	968	}
738	}	969	}
739		970
740	static void	971	static void
741	time_update (void)	972	time_update (EV_P)
742	{	973	{
743	int i;	974	int i;
744		975
745	#if EV_USE_MONOTONIC	976	#if EV_USE_MONOTONIC
746	if (expect_true (have_monotonic))	977	if (expect_true (have_monotonic))
747	{	978	{
748	if (time_update_monotonic ())	979	if (time_update_monotonic (EV_A))
749	{	980	{
750	ev_tstamp odiff = diff;	981	ev_tstamp odiff = rtmn_diff;
751		982
752	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 */
753	{	984	{
754	diff = ev_now - now;	985	rtmn_diff = rt_now - mn_now;
755		986
756	if (fabs (odiff - diff) < MIN_TIMEJUMP)	987	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
757	return; /* all is well */	988	return; /* all is well */
758		989
759	ev_now = ev_time ();	990	rt_now = ev_time ();
760	now = get_clock ();	991	mn_now = get_clock ();
761	now_floor = now;	992	now_floor = mn_now;
762	}	993	}
763		994
764	periodics_reschedule (diff - odiff);	995	periodics_reschedule (EV_A);
765	/* 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) */
766	}	998	}
767	}	999	}
768	else	1000	else
769	#endif	1001	#endif
770	{	1002	{
771	ev_now = ev_time ();	1003	rt_now = ev_time ();
772		1004
773	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))
774	{	1006	{
775	periodics_reschedule (ev_now - now);	1007	periodics_reschedule (EV_A);
776		1008
777	/* 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 */
778	for (i = 0; i < timercnt; ++i)	1010	for (i = 0; i < timercnt; ++i)
779	timers [i]->at += diff;	1011	((WT)timers [i])->at += rt_now - mn_now;
780	}	1012	}
781		1013
782	now = ev_now;	1014	mn_now = rt_now;
783	}	1015	}
784	}	1016	}
785		1017
786	int ev_loop_done;	1018	void
		1019	ev_ref (EV_P)
		1020	{
		1021	++activecnt;
		1022	}
787		1023
		1024	void
		1025	ev_unref (EV_P)
		1026	{
		1027	--activecnt;
		1028	}
		1029
		1030	static int loop_done;
		1031
		1032	void
788	void ev_loop (int flags)	1033	ev_loop (EV_P_ int flags)
789	{	1034	{
790	double block;	1035	double block;
791	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1036	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
792		1037
793	do	1038	do
794	{	1039	{
795	/* queue check watchers (and execute them) */	1040	/* queue check watchers (and execute them) */
796	if (expect_false (preparecnt))	1041	if (expect_false (preparecnt))
797	{	1042	{
798	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1043	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
799	call_pending ();	1044	call_pending (EV_A);
800	}	1045	}
801		1046
802	/* update fd-related kernel structures */	1047	/* update fd-related kernel structures */
803	fd_reify ();	1048	fd_reify (EV_A);
804		1049
805	/* calculate blocking time */	1050	/* calculate blocking time */
806		1051
807	/* 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
808	always have timers, we just calculate it always */	1053	always have timers, we just calculate it always */
809	#if EV_USE_MONOTONIC	1054	#if EV_USE_MONOTONIC
810	if (expect_true (have_monotonic))	1055	if (expect_true (have_monotonic))
811	time_update_monotonic ();	1056	time_update_monotonic (EV_A);
812	else	1057	else
813	#endif	1058	#endif
814	{	1059	{
815	ev_now = ev_time ();	1060	rt_now = ev_time ();
816	now = ev_now;	1061	mn_now = rt_now;
817	}	1062	}
818		1063
819	if (flags & EVLOOP_NONBLOCK || idlecnt)	1064	if (flags & EVLOOP_NONBLOCK || idlecnt)
820	block = 0.;	1065	block = 0.;
821	else	1066	else
822	{	1067	{
823	block = MAX_BLOCKTIME;	1068	block = MAX_BLOCKTIME;
824		1069
825	if (timercnt)	1070	if (timercnt)
826	{	1071	{
827	ev_tstamp to = timers [0]->at - now + method_fudge;	1072	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
828	if (block > to) block = to;	1073	if (block > to) block = to;
829	}	1074	}
830		1075
831	if (periodiccnt)	1076	if (periodiccnt)
832	{	1077	{
833	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1078	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
834	if (block > to) block = to;	1079	if (block > to) block = to;
835	}	1080	}
836		1081
837	if (block < 0.) block = 0.;	1082	if (block < 0.) block = 0.;
838	}	1083	}
839		1084
840	method_poll (block);	1085	method_poll (EV_A_ block);
841		1086
842	/* update ev_now, do magic */	1087	/* update rt_now, do magic */
843	time_update ();	1088	time_update (EV_A);
844		1089
845	/* queue pending timers and reschedule them */	1090	/* queue pending timers and reschedule them */
846	timers_reify (); /* relative timers called last */	1091	timers_reify (EV_A); /* relative timers called last */
847	periodics_reify (); /* absolute timers called first */	1092	periodics_reify (EV_A); /* absolute timers called first */
848		1093
849	/* queue idle watchers unless io or timers are pending */	1094	/* queue idle watchers unless io or timers are pending */
850	if (!pendingcnt)	1095	if (!pendingcnt)
851	queue_events ((W *)idles, idlecnt, EV_IDLE);	1096	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
852		1097
853	/* queue check watchers, to be executed first */	1098	/* queue check watchers, to be executed first */
854	if (checkcnt)	1099	if (checkcnt)
855	queue_events ((W *)checks, checkcnt, EV_CHECK);	1100	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
856		1101
857	call_pending ();	1102	call_pending (EV_A);
858	}	1103	}
859	while (!ev_loop_done);	1104	while (activecnt && !loop_done);
860		1105
861	if (ev_loop_done != 2)	1106	if (loop_done != 2)
862	ev_loop_done = 0;	1107	loop_done = 0;
		1108	}
		1109
		1110	void
		1111	ev_unloop (EV_P_ int how)
		1112	{
		1113	loop_done = how;
863	}	1114	}
864		1115
865	/*****************************************************************************/	1116	/*****************************************************************************/
866		1117
867	static void	1118	inline void
868	wlist_add (WL *head, WL elem)	1119	wlist_add (WL *head, WL elem)
869	{	1120	{
870	elem->next = *head;	1121	elem->next = *head;
871	*head = elem;	1122	*head = elem;
872	}	1123	}
873		1124
874	static void	1125	inline void
875	wlist_del (WL *head, WL elem)	1126	wlist_del (WL *head, WL elem)
876	{	1127	{
877	while (*head)	1128	while (*head)
878	{	1129	{
879	if (*head == elem)	1130	if (*head == elem)
…		…
884		1135
885	head = &(*head)->next;	1136	head = &(*head)->next;
886	}	1137	}
887	}	1138	}
888		1139
889	static void	1140	inline void
890	ev_clear_pending (W w)	1141	ev_clear_pending (EV_P_ W w)
891	{	1142	{
892	if (w->pending)	1143	if (w->pending)
893	{	1144	{
894	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1145	pendings [ABSPRI (w)][w->pending - 1].w = 0;
895	w->pending = 0;	1146	w->pending = 0;
896	}	1147	}
897	}	1148	}
898		1149
899	static void	1150	inline void
900	ev_start (W w, int active)	1151	ev_start (EV_P_ W w, int active)
901	{	1152	{
902	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1153	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
903	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1154	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
904		1155
905	w->active = active;	1156	w->active = active;
		1157	ev_ref (EV_A);
906	}	1158	}
907		1159
908	static void	1160	inline void
909	ev_stop (W w)	1161	ev_stop (EV_P_ W w)
910	{	1162	{
		1163	ev_unref (EV_A);
911	w->active = 0;	1164	w->active = 0;
912	}	1165	}
913		1166
914	/*****************************************************************************/	1167	/*****************************************************************************/
915		1168
916	void	1169	void
917	ev_io_start (struct ev_io *w)	1170	ev_io_start (EV_P_ struct ev_io *w)
918	{	1171	{
919	int fd = w->fd;	1172	int fd = w->fd;
920		1173
921	if (ev_is_active (w))	1174	if (ev_is_active (w))
922	return;	1175	return;
923		1176
924	assert (("ev_io_start called with negative fd", fd >= 0));	1177	assert (("ev_io_start called with negative fd", fd >= 0));
925		1178
926	ev_start ((W)w, 1);	1179	ev_start (EV_A_ (W)w, 1);
927	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1180	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
928	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1181	wlist_add ((WL *)&anfds[fd].head, (WL)w);
929		1182
930	fd_change (fd);	1183	fd_change (EV_A_ fd);
931	}	1184	}
932		1185
933	void	1186	void
934	ev_io_stop (struct ev_io *w)	1187	ev_io_stop (EV_P_ struct ev_io *w)
935	{	1188	{
936	ev_clear_pending ((W)w);	1189	ev_clear_pending (EV_A_ (W)w);
937	if (!ev_is_active (w))	1190	if (!ev_is_active (w))
938	return;	1191	return;
939		1192
940	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1193	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
941	ev_stop ((W)w);	1194	ev_stop (EV_A_ (W)w);
942		1195
943	fd_change (w->fd);	1196	fd_change (EV_A_ w->fd);
944	}	1197	}
945		1198
946	void	1199	void
947	ev_timer_start (struct ev_timer *w)	1200	ev_timer_start (EV_P_ struct ev_timer *w)
948	{	1201	{
949	if (ev_is_active (w))	1202	if (ev_is_active (w))
950	return;	1203	return;
951		1204
952	w->at += now;	1205	((WT)w)->at += mn_now;
953		1206
954	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.));
955		1208
956	ev_start ((W)w, ++timercnt);	1209	ev_start (EV_A_ (W)w, ++timercnt);
957	array_needsize (timers, timermax, timercnt, );	1210	array_needsize (timers, timermax, timercnt, );
958	timers [timercnt - 1] = w;	1211	timers [timercnt - 1] = w;
959	upheap ((WT *)timers, timercnt - 1);	1212	upheap ((WT *)timers, timercnt - 1);
960	}
961		1213
		1214	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1215	}
		1216
962	void	1217	void
963	ev_timer_stop (struct ev_timer *w)	1218	ev_timer_stop (EV_P_ struct ev_timer *w)
964	{	1219	{
965	ev_clear_pending ((W)w);	1220	ev_clear_pending (EV_A_ (W)w);
966	if (!ev_is_active (w))	1221	if (!ev_is_active (w))
967	return;	1222	return;
968		1223
		1224	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1225
969	if (w->active < timercnt--)	1226	if (((W)w)->active < timercnt--)
970	{	1227	{
971	timers [w->active - 1] = timers [timercnt];	1228	timers [((W)w)->active - 1] = timers [timercnt];
972	downheap ((WT *)timers, timercnt, w->active - 1);	1229	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
973	}	1230	}
974		1231
975	w->at = w->repeat;	1232	((WT)w)->at = w->repeat;
976		1233
977	ev_stop ((W)w);	1234	ev_stop (EV_A_ (W)w);
978	}	1235	}
979		1236
980	void	1237	void
981	ev_timer_again (struct ev_timer *w)	1238	ev_timer_again (EV_P_ struct ev_timer *w)
982	{	1239	{
983	if (ev_is_active (w))	1240	if (ev_is_active (w))
984	{	1241	{
985	if (w->repeat)	1242	if (w->repeat)
986	{	1243	{
987	w->at = now + w->repeat;	1244	((WT)w)->at = mn_now + w->repeat;
988	downheap ((WT *)timers, timercnt, w->active - 1);	1245	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
989	}	1246	}
990	else	1247	else
991	ev_timer_stop (w);	1248	ev_timer_stop (EV_A_ w);
992	}	1249	}
993	else if (w->repeat)	1250	else if (w->repeat)
994	ev_timer_start (w);	1251	ev_timer_start (EV_A_ w);
995	}	1252	}
996		1253
997	void	1254	void
998	ev_periodic_start (struct ev_periodic *w)	1255	ev_periodic_start (EV_P_ struct ev_periodic *w)
999	{	1256	{
1000	if (ev_is_active (w))	1257	if (ev_is_active (w))
1001	return;	1258	return;
1002		1259
1003	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.));
1004		1261
1005	/* 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 */
1006	if (w->interval)	1263	if (w->interval)
1007	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;
1008		1265
1009	ev_start ((W)w, ++periodiccnt);	1266	ev_start (EV_A_ (W)w, ++periodiccnt);
1010	array_needsize (periodics, periodicmax, periodiccnt, );	1267	array_needsize (periodics, periodicmax, periodiccnt, );
1011	periodics [periodiccnt - 1] = w;	1268	periodics [periodiccnt - 1] = w;
1012	upheap ((WT *)periodics, periodiccnt - 1);	1269	upheap ((WT *)periodics, periodiccnt - 1);
1013	}
1014		1270
		1271	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1272	}
		1273
1015	void	1274	void
1016	ev_periodic_stop (struct ev_periodic *w)	1275	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1017	{	1276	{
1018	ev_clear_pending ((W)w);	1277	ev_clear_pending (EV_A_ (W)w);
1019	if (!ev_is_active (w))	1278	if (!ev_is_active (w))
1020	return;	1279	return;
1021		1280
		1281	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1282
1022	if (w->active < periodiccnt--)	1283	if (((W)w)->active < periodiccnt--)
1023	{	1284	{
1024	periodics [w->active - 1] = periodics [periodiccnt];	1285	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1025	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1286	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1026	}	1287	}
1027		1288
1028	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);
1029	}	1356	}
1030		1357
1031	#ifndef SA_RESTART	1358	#ifndef SA_RESTART
1032	# define SA_RESTART 0	1359	# define SA_RESTART 0
1033	#endif	1360	#endif
1034		1361
1035	void	1362	void
1036	ev_signal_start (struct ev_signal *w)	1363	ev_signal_start (EV_P_ struct ev_signal *w)
1037	{	1364	{
		1365	#if EV_MULTIPLICITY
		1366	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1367	#endif
1038	if (ev_is_active (w))	1368	if (ev_is_active (w))
1039	return;	1369	return;
1040		1370
1041	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));
1042		1372
1043	ev_start ((W)w, 1);	1373	ev_start (EV_A_ (W)w, 1);
1044	array_needsize (signals, signalmax, w->signum, signals_init);	1374	array_needsize (signals, signalmax, w->signum, signals_init);
1045	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1375	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1046		1376
1047	if (!w->next)	1377	if (!((WL)w)->next)
1048	{	1378	{
		1379	#if WIN32
		1380	signal (w->signum, sighandler);
		1381	#else
1049	struct sigaction sa;	1382	struct sigaction sa;
1050	sa.sa_handler = sighandler;	1383	sa.sa_handler = sighandler;
1051	sigfillset (&sa.sa_mask);	1384	sigfillset (&sa.sa_mask);
1052	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 */
1053	sigaction (w->signum, &sa, 0);	1386	sigaction (w->signum, &sa, 0);
		1387	#endif
1054	}	1388	}
1055	}	1389	}
1056		1390
1057	void	1391	void
1058	ev_signal_stop (struct ev_signal *w)	1392	ev_signal_stop (EV_P_ struct ev_signal *w)
1059	{	1393	{
1060	ev_clear_pending ((W)w);	1394	ev_clear_pending (EV_A_ (W)w);
1061	if (!ev_is_active (w))	1395	if (!ev_is_active (w))
1062	return;	1396	return;
1063		1397
1064	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1398	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1065	ev_stop ((W)w);	1399	ev_stop (EV_A_ (W)w);
1066		1400
1067	if (!signals [w->signum - 1].head)	1401	if (!signals [w->signum - 1].head)
1068	signal (w->signum, SIG_DFL);	1402	signal (w->signum, SIG_DFL);
1069	}	1403	}
1070		1404
1071	void	1405	void
1072	ev_idle_start (struct ev_idle *w)	1406	ev_child_start (EV_P_ struct ev_child *w)
1073	{	1407	{
		1408	#if EV_MULTIPLICITY
		1409	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1410	#endif
1074	if (ev_is_active (w))	1411	if (ev_is_active (w))
1075	return;	1412	return;
1076		1413
1077	ev_start ((W)w, ++idlecnt);	1414	ev_start (EV_A_ (W)w, 1);
1078	array_needsize (idles, idlemax, idlecnt, );	1415	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1079	idles [idlecnt - 1] = w;
1080	}	1416	}
1081		1417
1082	void	1418	void
1083	ev_idle_stop (struct ev_idle *w)	1419	ev_child_stop (EV_P_ struct ev_child *w)
1084	{	1420	{
1085	ev_clear_pending ((W)w);	1421	ev_clear_pending (EV_A_ (W)w);
1086	if (ev_is_active (w))	1422	if (ev_is_active (w))
1087	return;	1423	return;
1088		1424
1089	idles [w->active - 1] = idles [--idlecnt];
1090	ev_stop ((W)w);
1091	}
1092
1093	void
1094	ev_prepare_start (struct ev_prepare *w)
1095	{
1096	if (ev_is_active (w))
1097	return;
1098
1099	ev_start ((W)w, ++preparecnt);
1100	array_needsize (prepares, preparemax, preparecnt, );
1101	prepares [preparecnt - 1] = w;
1102	}
1103
1104	void
1105	ev_prepare_stop (struct ev_prepare *w)
1106	{
1107	ev_clear_pending ((W)w);
1108	if (ev_is_active (w))
1109	return;
1110
1111	prepares [w->active - 1] = prepares [--preparecnt];
1112	ev_stop ((W)w);
1113	}
1114
1115	void
1116	ev_check_start (struct ev_check *w)
1117	{
1118	if (ev_is_active (w))
1119	return;
1120
1121	ev_start ((W)w, ++checkcnt);
1122	array_needsize (checks, checkmax, checkcnt, );
1123	checks [checkcnt - 1] = w;
1124	}
1125
1126	void
1127	ev_check_stop (struct ev_check *w)
1128	{
1129	ev_clear_pending ((W)w);
1130	if (ev_is_active (w))
1131	return;
1132
1133	checks [w->active - 1] = checks [--checkcnt];
1134	ev_stop ((W)w);
1135	}
1136
1137	void
1138	ev_child_start (struct ev_child *w)
1139	{
1140	if (ev_is_active (w))
1141	return;
1142
1143	ev_start ((W)w, 1);
1144	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1145	}
1146
1147	void
1148	ev_child_stop (struct ev_child *w)
1149	{
1150	ev_clear_pending ((W)w);
1151	if (ev_is_active (w))
1152	return;
1153
1154	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1425	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1155	ev_stop ((W)w);	1426	ev_stop (EV_A_ (W)w);
1156	}	1427	}
1157		1428
1158	/*****************************************************************************/	1429	/*****************************************************************************/
1159		1430
1160	struct ev_once	1431	struct ev_once
…		…
1164	void (*cb)(int revents, void *arg);	1435	void (*cb)(int revents, void *arg);
1165	void *arg;	1436	void *arg;
1166	};	1437	};
1167		1438
1168	static void	1439	static void
1169	once_cb (struct ev_once *once, int revents)	1440	once_cb (EV_P_ struct ev_once *once, int revents)
1170	{	1441	{
1171	void (*cb)(int revents, void *arg) = once->cb;	1442	void (*cb)(int revents, void *arg) = once->cb;
1172	void *arg = once->arg;	1443	void *arg = once->arg;
1173		1444
1174	ev_io_stop (&once->io);	1445	ev_io_stop (EV_A_ &once->io);
1175	ev_timer_stop (&once->to);	1446	ev_timer_stop (EV_A_ &once->to);
1176	free (once);	1447	ev_free (once);
1177		1448
1178	cb (revents, arg);	1449	cb (revents, arg);
1179	}	1450	}
1180		1451
1181	static void	1452	static void
1182	once_cb_io (struct ev_io *w, int revents)	1453	once_cb_io (EV_P_ struct ev_io *w, int revents)
1183	{	1454	{
1184	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);
1185	}	1456	}
1186		1457
1187	static void	1458	static void
1188	once_cb_to (struct ev_timer *w, int revents)	1459	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1189	{	1460	{
1190	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);
1191	}	1462	}
1192		1463
1193	void	1464	void
1194	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)
1195	{	1466	{
1196	struct ev_once *once = malloc (sizeof (struct ev_once));	1467	struct ev_once *once = ev_malloc (sizeof (struct ev_once));
1197		1468
1198	if (!once)	1469	if (!once)
1199	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1470	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1200	else	1471	else
1201	{	1472	{
…		…
1204		1475
1205	ev_watcher_init (&once->io, once_cb_io);	1476	ev_watcher_init (&once->io, once_cb_io);
1206	if (fd >= 0)	1477	if (fd >= 0)
1207	{	1478	{
1208	ev_io_set (&once->io, fd, events);	1479	ev_io_set (&once->io, fd, events);
1209	ev_io_start (&once->io);	1480	ev_io_start (EV_A_ &once->io);
1210	}	1481	}
1211		1482
1212	ev_watcher_init (&once->to, once_cb_to);	1483	ev_watcher_init (&once->to, once_cb_to);
1213	if (timeout >= 0.)	1484	if (timeout >= 0.)
1214	{	1485	{
1215	ev_timer_set (&once->to, timeout, 0.);	1486	ev_timer_set (&once->to, timeout, 0.);
1216	ev_timer_start (&once->to);	1487	ev_timer_start (EV_A_ &once->to);
1217	}	1488	}
1218	}	1489	}
1219	}	1490	}
1220		1491
1221	/*****************************************************************************/
1222
1223	#if 0
1224
1225	struct ev_io wio;
1226
1227	static void
1228	sin_cb (struct ev_io *w, int revents)
1229	{
1230	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1231	}
1232
1233	static void
1234	ocb (struct ev_timer *w, int revents)
1235	{
1236	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1237	ev_timer_stop (w);
1238	ev_timer_start (w);
1239	}
1240
1241	static void
1242	scb (struct ev_signal *w, int revents)
1243	{
1244	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1245	ev_io_stop (&wio);
1246	ev_io_start (&wio);
1247	}
1248
1249	static void
1250	gcb (struct ev_signal *w, int revents)
1251	{
1252	fprintf (stderr, "generic %x\n", revents);
1253
1254	}
1255
1256	int main (void)
1257	{
1258	ev_init (0);
1259
1260	ev_io_init (&wio, sin_cb, 0, EV_READ);
1261	ev_io_start (&wio);
1262
1263	struct ev_timer t[10000];
1264
1265	#if 0
1266	int i;
1267	for (i = 0; i < 10000; ++i)
1268	{
1269	struct ev_timer *w = t + i;
1270	ev_watcher_init (w, ocb, i);
1271	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1272	ev_timer_start (w);
1273	if (drand48 () < 0.5)
1274	ev_timer_stop (w);
1275	}
1276	#endif
1277
1278	struct ev_timer t1;
1279	ev_timer_init (&t1, ocb, 5, 10);
1280	ev_timer_start (&t1);
1281
1282	struct ev_signal sig;
1283	ev_signal_init (&sig, scb, SIGQUIT);
1284	ev_signal_start (&sig);
1285
1286	struct ev_check cw;
1287	ev_check_init (&cw, gcb);
1288	ev_check_start (&cw);
1289
1290	struct ev_idle iw;
1291	ev_idle_init (&iw, gcb);
1292	ev_idle_start (&iw);
1293
1294	ev_loop (0);
1295
1296	return 0;
1297	}
1298
1299	#endif
1300
1301
1302
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