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

Comparing libev/ev.c (file contents):
Revision 1.52 by root, Sat Nov 3 22:10:39 2007 UTC vs.
Revision 1.75 by root, Tue Nov 6 19:29:20 2007 UTC

…		…
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	#ifndef EV_STANDALONE	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>
38	#include <fcntl.h>	59	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	60	#include <stddef.h>
41		61
42	#include <stdio.h>	62	#include <stdio.h>
43		63
44	#include <assert.h>	64	#include <assert.h>
45	#include <errno.h>	65	#include <errno.h>
46	#include <sys/types.h>	66	#include <sys/types.h>
		67	#include <time.h>
		68
		69	#include <signal.h>
		70
47	#ifndef WIN32	71	#ifndef WIN32
		72	# include <unistd.h>
		73	# include <sys/time.h>
48	# include <sys/wait.h>	74	# include <sys/wait.h>
49	#endif	75	#endif
50	#include <sys/time.h>
51	#include <time.h>
52
53	/**/	76	/**/
54		77
55	#ifndef EV_USE_MONOTONIC	78	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	79	# define EV_USE_MONOTONIC 1
57	#endif	80	#endif
58		81
59	#ifndef EV_USE_SELECT	82	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	83	# define EV_USE_SELECT 1
61	#endif	84	#endif
62		85
63	#ifndef EV_USEV_POLL	86	#ifndef EV_USE_POLL
64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */	87	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
65	#endif	88	#endif
66		89
67	#ifndef EV_USE_EPOLL	90	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	91	# define EV_USE_EPOLL 0
69	#endif	92	#endif
70		93
71	#ifndef EV_USE_KQUEUE	94	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	95	# define EV_USE_KQUEUE 0
		96	#endif
		97
		98	#ifndef EV_USE_WIN32
		99	# ifdef WIN32
		100	# define EV_USE_WIN32 0 /* it does not exist, use select */
		101	# undef EV_USE_SELECT
		102	# define EV_USE_SELECT 1
		103	# else
		104	# define EV_USE_WIN32 0
		105	# endif
73	#endif	106	#endif
74		107
75	#ifndef EV_USE_REALTIME	108	#ifndef EV_USE_REALTIME
76	# define EV_USE_REALTIME 1	109	# define EV_USE_REALTIME 1
77	#endif	110	#endif
…		…
113		146
114	typedef struct ev_watcher *W;	147	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	148	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	149	typedef struct ev_watcher_time *WT;
117		150
118	static ev_tstamp now_floor, mn_now, diff; /* monotonic clock */	151	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119	static ev_tstamp rt_now;
120	static int method;
121		152
122	static int have_monotonic; /* runtime */	153	#include "ev_win32.c"
123		154
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	155	/*****************************************************************************/
125	static void (*method_modify)(EV_P_ int fd, int oev, int nev);
126	static void (*method_poll)(EV_P_ ev_tstamp timeout);
127		156
128	static int activecnt; /* number of active events */	157	static void (syserr_cb)(const char msg);
129		158
130	#if EV_USE_SELECT	159	void ev_set_syserr_cb (void (cb)(const char msg))
131	static unsigned char vec_ri, vec_ro, vec_wi, vec_wo;	160	{
132	static int vec_max;	161	syserr_cb = cb;
133	#endif	162	}
134		163
135	#if EV_USEV_POLL	164	static void
136	static struct pollfd *polls;	165	syserr (const char *msg)
137	static int pollmax, pollcnt;	166	{
138	static int pollidxs; / maps fds into structure indices */	167	if (!msg)
139	static int pollidxmax;	168	msg = "(libev) system error";
140	#endif
141		169
142	#if EV_USE_EPOLL	170	if (syserr_cb)
143	static int epoll_fd = -1;	171	syserr_cb (msg);
		172	else
		173	{
		174	perror (msg);
		175	abort ();
		176	}
		177	}
144		178
145	static struct epoll_event *events;	179	static void (alloc)(void *ptr, long size);
146	static int eventmax;
147	#endif
148		180
149	#if EV_USE_KQUEUE	181	void ev_set_allocator (void (cb)(void *ptr, long size))
150	static int kqueue_fd;	182	{
151	static struct kevent *kqueue_changes;	183	alloc = cb;
152	static int kqueue_changemax, kqueue_changecnt;	184	}
153	static struct kevent *kqueue_events;	185
154	static int kqueue_eventmax;	186	static void *
		187	ev_realloc (void *ptr, long size)
		188	{
		189	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		190
		191	if (!ptr && size)
		192	{
		193	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		194	abort ();
		195	}
		196
		197	return ptr;
		198	}
		199
		200	#define ev_malloc(size) ev_realloc (0, (size))
		201	#define ev_free(ptr) ev_realloc ((ptr), 0)
		202
		203	/*****************************************************************************/
		204
		205	typedef struct
		206	{
		207	WL head;
		208	unsigned char events;
		209	unsigned char reify;
		210	} ANFD;
		211
		212	typedef struct
		213	{
		214	W w;
		215	int events;
		216	} ANPENDING;
		217
		218	#if EV_MULTIPLICITY
		219
		220	struct ev_loop
		221	{
		222	# define VAR(name,decl) decl;
		223	# include "ev_vars.h"
		224	};
		225	# undef VAR
		226	# include "ev_wrap.h"
		227
		228	#else
		229
		230	# define VAR(name,decl) static decl;
		231	# include "ev_vars.h"
		232	# undef VAR
		233
155	#endif	234	#endif
156		235
157	/*****************************************************************************/	236	/*****************************************************************************/
158		237
159	inline ev_tstamp	238	inline ev_tstamp
…		…
189	ev_now (EV_P)	268	ev_now (EV_P)
190	{	269	{
191	return rt_now;	270	return rt_now;
192	}	271	}
193		272
194	#define array_roundsize(base,n) ((n) \| 4 & ~3)	273	#define array_roundsize(type,n) ((n) \| 4 & ~3)
195		274
196	#define array_needsize(base,cur,cnt,init) \	275	#define array_needsize(type,base,cur,cnt,init) \
197	if (expect_false ((cnt) > cur)) \	276	if (expect_false ((cnt) > cur)) \
198	{ \	277	{ \
199	int newcnt = cur; \	278	int newcnt = cur; \
200	do \	279	do \
201	{ \	280	{ \
202	newcnt = array_roundsize (base, newcnt << 1); \	281	newcnt = array_roundsize (type, newcnt << 1); \
203	} \	282	} \
204	while ((cnt) > newcnt); \	283	while ((cnt) > newcnt); \
205	\	284	\
206	base = realloc (base, sizeof (base) (newcnt)); \	285	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
207	init (base + cur, newcnt - cur); \	286	init (base + cur, newcnt - cur); \
208	cur = newcnt; \	287	cur = newcnt; \
209	}	288	}
		289
		290	#define array_slim(type,stem) \
		291	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		292	{ \
		293	stem ## max = array_roundsize (stem ## cnt >> 1); \
		294	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		295	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		296	}
		297
		298	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
		299	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
		300	#define array_free_microshit(stem) \
		301	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
		302
		303	#define array_free(stem, idx) \
		304	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
210		305
211	/*****************************************************************************/	306	/*****************************************************************************/
212
213	typedef struct
214	{
215	struct ev_watcher_list *head;
216	unsigned char events;
217	unsigned char reify;
218	} ANFD;
219
220	static ANFD *anfds;
221	static int anfdmax;
222		307
223	static void	308	static void
224	anfds_init (ANFD *base, int count)	309	anfds_init (ANFD *base, int count)
225	{	310	{
226	while (count--)	311	while (count--)
…		…
231		316
232	++base;	317	++base;
233	}	318	}
234	}	319	}
235		320
236	typedef struct
237	{
238	W w;
239	int events;
240	} ANPENDING;
241
242	static ANPENDING *pendings [NUMPRI];
243	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
244
245	static void	321	static void
246	event (EV_P_ W w, int events)	322	event (EV_P_ W w, int events)
247	{	323	{
248	if (w->pending)	324	if (w->pending)
249	{	325	{
250	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	326	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
251	return;	327	return;
252	}	328	}
253		329
254	w->pending = ++pendingcnt [ABSPRI (w)];	330	w->pending = ++pendingcnt [ABSPRI (w)];
255	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	331	array_needsize (ANPENDING, pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));
256	pendings [ABSPRI (w)][w->pending - 1].w = w;	332	pendings [ABSPRI (w)][w->pending - 1].w = w;
257	pendings [ABSPRI (w)][w->pending - 1].events = events;	333	pendings [ABSPRI (w)][w->pending - 1].events = events;
258	}	334	}
259		335
260	static void	336	static void
…		…
280	event (EV_A_ (W)w, ev);	356	event (EV_A_ (W)w, ev);
281	}	357	}
282	}	358	}
283		359
284	/*****************************************************************************/	360	/*****************************************************************************/
285
286	static int *fdchanges;
287	static int fdchangemax, fdchangecnt;
288		361
289	static void	362	static void
290	fd_reify (EV_P)	363	fd_reify (EV_P)
291	{	364	{
292	int i;	365	int i;
…		…
302	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	375	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
303	events \|= w->events;	376	events \|= w->events;
304		377
305	anfd->reify = 0;	378	anfd->reify = 0;
306		379
307	if (anfd->events != events)
308	{
309	method_modify (EV_A_ fd, anfd->events, events);	380	method_modify (EV_A_ fd, anfd->events, events);
310	anfd->events = events;	381	anfd->events = events;
311	}
312	}	382	}
313		383
314	fdchangecnt = 0;	384	fdchangecnt = 0;
315	}	385	}
316		386
317	static void	387	static void
318	fd_change (EV_P_ int fd)	388	fd_change (EV_P_ int fd)
319	{	389	{
320	if (anfds [fd].reify \|\| fdchangecnt < 0)	390	if (anfds [fd].reify)
321	return;	391	return;
322		392
323	anfds [fd].reify = 1;	393	anfds [fd].reify = 1;
324		394
325	++fdchangecnt;	395	++fdchangecnt;
326	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	396	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
327	fdchanges [fdchangecnt - 1] = fd;	397	fdchanges [fdchangecnt - 1] = fd;
328	}	398	}
329		399
330	static void	400	static void
331	fd_kill (EV_P_ int fd)	401	fd_kill (EV_P_ int fd)
…		…
337	ev_io_stop (EV_A_ w);	407	ev_io_stop (EV_A_ w);
338	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	408	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
339	}	409	}
340	}	410	}
341		411
		412	static int
		413	fd_valid (int fd)
		414	{
		415	#ifdef WIN32
		416	return !!win32_get_osfhandle (fd);
		417	#else
		418	return fcntl (fd, F_GETFD) != -1;
		419	#endif
		420	}
		421
342	/* called on EBADF to verify fds */	422	/* called on EBADF to verify fds */
343	static void	423	static void
344	fd_ebadf (EV_P)	424	fd_ebadf (EV_P)
345	{	425	{
346	int fd;	426	int fd;
347		427
348	for (fd = 0; fd < anfdmax; ++fd)	428	for (fd = 0; fd < anfdmax; ++fd)
349	if (anfds [fd].events)	429	if (anfds [fd].events)
350	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	430	if (!fd_valid (fd) == -1 && errno == EBADF)
351	fd_kill (EV_A_ fd);	431	fd_kill (EV_A_ fd);
352	}	432	}
353		433
354	/* called on ENOMEM in select/poll to kill some fds and retry */	434	/* called on ENOMEM in select/poll to kill some fds and retry */
355	static void	435	static void
356	fd_enomem (EV_P)	436	fd_enomem (EV_P)
357	{	437	{
358	int fd = anfdmax;	438	int fd;
359		439
360	while (fd--)	440	for (fd = anfdmax; fd--; )
361	if (anfds [fd].events)	441	if (anfds [fd].events)
362	{	442	{
363	close (fd);
364	fd_kill (EV_A_ fd);	443	fd_kill (EV_A_ fd);
365	return;	444	return;
366	}	445	}
367	}	446	}
368		447
		448	/* usually called after fork if method needs to re-arm all fds from scratch */
		449	static void
		450	fd_rearm_all (EV_P)
		451	{
		452	int fd;
		453
		454	/* this should be highly optimised to not do anything but set a flag */
		455	for (fd = 0; fd < anfdmax; ++fd)
		456	if (anfds [fd].events)
		457	{
		458	anfds [fd].events = 0;
		459	fd_change (EV_A_ fd);
		460	}
		461	}
		462
369	/*****************************************************************************/	463	/*****************************************************************************/
370		464
371	static struct ev_timer **timers;
372	static int timermax, timercnt;
373
374	static struct ev_periodic **periodics;
375	static int periodicmax, periodiccnt;
376
377	static void	465	static void
378	upheap (WT *timers, int k)	466	upheap (WT *heap, int k)
379	{	467	{
380	WT w = timers [k];	468	WT w = heap [k];
381		469
382	while (k && timers [k >> 1]->at > w->at)	470	while (k && heap [k >> 1]->at > w->at)
383	{	471	{
384	timers [k] = timers [k >> 1];	472	heap [k] = heap [k >> 1];
385	timers [k]->active = k + 1;	473	((W)heap [k])->active = k + 1;
386	k >>= 1;	474	k >>= 1;
387	}	475	}
388		476
389	timers [k] = w;	477	heap [k] = w;
390	timers [k]->active = k + 1;	478	((W)heap [k])->active = k + 1;
391		479
392	}	480	}
393		481
394	static void	482	static void
395	downheap (WT *timers, int N, int k)	483	downheap (WT *heap, int N, int k)
396	{	484	{
397	WT w = timers [k];	485	WT w = heap [k];
398		486
399	while (k < (N >> 1))	487	while (k < (N >> 1))
400	{	488	{
401	int j = k << 1;	489	int j = k << 1;
402		490
403	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	491	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
404	++j;	492	++j;
405		493
406	if (w->at <= timers [j]->at)	494	if (w->at <= heap [j]->at)
407	break;	495	break;
408		496
409	timers [k] = timers [j];	497	heap [k] = heap [j];
410	timers [k]->active = k + 1;	498	((W)heap [k])->active = k + 1;
411	k = j;	499	k = j;
412	}	500	}
413		501
414	timers [k] = w;	502	heap [k] = w;
415	timers [k]->active = k + 1;	503	((W)heap [k])->active = k + 1;
416	}	504	}
417		505
418	/*****************************************************************************/	506	/*****************************************************************************/
419		507
420	typedef struct	508	typedef struct
421	{	509	{
422	struct ev_watcher_list *head;	510	WL head;
423	sig_atomic_t volatile gotsig;	511	sig_atomic_t volatile gotsig;
424	} ANSIG;	512	} ANSIG;
425		513
426	static ANSIG *signals;	514	static ANSIG *signals;
427	static int signalmax;	515	static int signalmax;
…		…
443	}	531	}
444		532
445	static void	533	static void
446	sighandler (int signum)	534	sighandler (int signum)
447	{	535	{
		536	#if WIN32
		537	signal (signum, sighandler);
		538	#endif
		539
448	signals [signum - 1].gotsig = 1;	540	signals [signum - 1].gotsig = 1;
449		541
450	if (!gotsig)	542	if (!gotsig)
451	{	543	{
452	int old_errno = errno;	544	int old_errno = errno;
453	gotsig = 1;	545	gotsig = 1;
		546	#ifdef WIN32
		547	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
		548	#else
454	write (sigpipe [1], &signum, 1);	549	write (sigpipe [1], &signum, 1);
		550	#endif
455	errno = old_errno;	551	errno = old_errno;
456	}	552	}
457	}	553	}
458		554
459	static void	555	static void
460	sigcb (EV_P_ struct ev_io *iow, int revents)	556	sigcb (EV_P_ struct ev_io *iow, int revents)
461	{	557	{
462	struct ev_watcher_list *w;	558	WL w;
463	int signum;	559	int signum;
464		560
		561	#ifdef WIN32
		562	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
		563	#else
465	read (sigpipe [0], &revents, 1);	564	read (sigpipe [0], &revents, 1);
		565	#endif
466	gotsig = 0;	566	gotsig = 0;
467		567
468	for (signum = signalmax; signum--; )	568	for (signum = signalmax; signum--; )
469	if (signals [signum].gotsig)	569	if (signals [signum].gotsig)
470	{	570	{
…		…
486	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	586	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
487	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	587	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
488	#endif	588	#endif
489		589
490	ev_io_set (&sigev, sigpipe [0], EV_READ);	590	ev_io_set (&sigev, sigpipe [0], EV_READ);
491	ev_io_start (&sigev);	591	ev_io_start (EV_A_ &sigev);
492	ev_unref (EV_A); /* child watcher should not keep loop alive */	592	ev_unref (EV_A); /* child watcher should not keep loop alive */
493	}	593	}
494		594
495	/*****************************************************************************/	595	/*****************************************************************************/
496		596
497	static struct ev_idle **idles;
498	static int idlemax, idlecnt;
499
500	static struct ev_prepare **prepares;
501	static int preparemax, preparecnt;
502
503	static struct ev_check **checks;
504	static int checkmax, checkcnt;
505
506	/*****************************************************************************/
507
508	static struct ev_child *childs [PID_HASHSIZE];	597	static struct ev_child *childs [PID_HASHSIZE];
		598
		599	#ifndef WIN32
		600
509	static struct ev_signal childev;	601	static struct ev_signal childev;
510
511	#ifndef WIN32
512		602
513	#ifndef WCONTINUED	603	#ifndef WCONTINUED
514	# define WCONTINUED 0	604	# define WCONTINUED 0
515	#endif	605	#endif
516		606
…		…
520	struct ev_child *w;	610	struct ev_child *w;
521		611
522	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	612	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
523	if (w->pid == pid \|\| !w->pid)	613	if (w->pid == pid \|\| !w->pid)
524	{	614	{
525	w->priority = sw->priority; /* need to do it now */	615	ev_priority (w) = ev_priority (sw); /* need to do it now */
526	w->rpid = pid;	616	w->rpid = pid;
527	w->rstatus = status;	617	w->rstatus = status;
528	event (EV_A_ (W)w, EV_CHILD);	618	event (EV_A_ (W)w, EV_CHILD);
529	}	619	}
530	}	620	}
531		621
532	static void	622	static void
…		…
552	# include "ev_kqueue.c"	642	# include "ev_kqueue.c"
553	#endif	643	#endif
554	#if EV_USE_EPOLL	644	#if EV_USE_EPOLL
555	# include "ev_epoll.c"	645	# include "ev_epoll.c"
556	#endif	646	#endif
557	#if EV_USEV_POLL	647	#if EV_USE_POLL
558	# include "ev_poll.c"	648	# include "ev_poll.c"
559	#endif	649	#endif
560	#if EV_USE_SELECT	650	#if EV_USE_SELECT
561	# include "ev_select.c"	651	# include "ev_select.c"
562	#endif	652	#endif
…		…
589	ev_method (EV_P)	679	ev_method (EV_P)
590	{	680	{
591	return method;	681	return method;
592	}	682	}
593		683
594	int	684	static void
595	ev_init (EV_P_ int methods)	685	loop_init (EV_P_ int methods)
596	{	686	{
597	if (!method)	687	if (!method)
598	{	688	{
599	#if EV_USE_MONOTONIC	689	#if EV_USE_MONOTONIC
600	{	690	{
…		…
605	#endif	695	#endif
606		696
607	rt_now = ev_time ();	697	rt_now = ev_time ();
608	mn_now = get_clock ();	698	mn_now = get_clock ();
609	now_floor = mn_now;	699	now_floor = mn_now;
610	diff = rt_now - mn_now;	700	rtmn_diff = rt_now - mn_now;
611
612	if (pipe (sigpipe))
613	return 0;
614		701
615	if (methods == EVMETHOD_AUTO)	702	if (methods == EVMETHOD_AUTO)
616	if (!enable_secure () && getenv ("LIBmethodS"))	703	if (!enable_secure () && getenv ("LIBEV_METHODS"))
617	methods = atoi (getenv ("LIBmethodS"));	704	methods = atoi (getenv ("LIBEV_METHODS"));
618	else	705	else
619	methods = EVMETHOD_ANY;	706	methods = EVMETHOD_ANY;
620		707
621	method = 0;	708	method = 0;
		709	#if EV_USE_WIN32
		710	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		711	#endif
622	#if EV_USE_KQUEUE	712	#if EV_USE_KQUEUE
623	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	713	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
624	#endif	714	#endif
625	#if EV_USE_EPOLL	715	#if EV_USE_EPOLL
626	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	716	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
627	#endif	717	#endif
628	#if EV_USEV_POLL	718	#if EV_USE_POLL
629	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	719	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
630	#endif	720	#endif
631	#if EV_USE_SELECT	721	#if EV_USE_SELECT
632	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	722	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
633	#endif	723	#endif
634		724
		725	ev_watcher_init (&sigev, sigcb);
		726	ev_set_priority (&sigev, EV_MAXPRI);
		727	}
		728	}
		729
		730	void
		731	loop_destroy (EV_P)
		732	{
		733	int i;
		734
		735	#if EV_USE_WIN32
		736	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		737	#endif
		738	#if EV_USE_KQUEUE
		739	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		740	#endif
		741	#if EV_USE_EPOLL
		742	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		743	#endif
		744	#if EV_USE_POLL
		745	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		746	#endif
		747	#if EV_USE_SELECT
		748	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		749	#endif
		750
		751	for (i = NUMPRI; i--; )
		752	array_free (pending, [i]);
		753
		754	/* have to use the microsoft-never-gets-it-right macro */
		755	array_free_microshit (fdchange);
		756	array_free_microshit (timer);
		757	array_free_microshit (periodic);
		758	array_free_microshit (idle);
		759	array_free_microshit (prepare);
		760	array_free_microshit (check);
		761
		762	method = 0;
		763	}
		764
		765	static void
		766	loop_fork (EV_P)
		767	{
		768	#if EV_USE_EPOLL
		769	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		770	#endif
		771	#if EV_USE_KQUEUE
		772	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		773	#endif
		774
		775	if (ev_is_active (&sigev))
		776	{
		777	/* default loop */
		778
		779	ev_ref (EV_A);
		780	ev_io_stop (EV_A_ &sigev);
		781	close (sigpipe [0]);
		782	close (sigpipe [1]);
		783
		784	while (pipe (sigpipe))
		785	syserr ("(libev) error creating pipe");
		786
		787	siginit (EV_A);
		788	}
		789
		790	postfork = 0;
		791	}
		792
		793	#if EV_MULTIPLICITY
		794	struct ev_loop *
		795	ev_loop_new (int methods)
		796	{
		797	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		798
		799	memset (loop, 0, sizeof (struct ev_loop));
		800
		801	loop_init (EV_A_ methods);
		802
		803	if (ev_method (EV_A))
		804	return loop;
		805
		806	return 0;
		807	}
		808
		809	void
		810	ev_loop_destroy (EV_P)
		811	{
		812	loop_destroy (EV_A);
		813	ev_free (loop);
		814	}
		815
		816	void
		817	ev_loop_fork (EV_P)
		818	{
		819	postfork = 1;
		820	}
		821
		822	#endif
		823
		824	#if EV_MULTIPLICITY
		825	struct ev_loop default_loop_struct;
		826	static struct ev_loop *default_loop;
		827
		828	struct ev_loop *
		829	#else
		830	static int default_loop;
		831
		832	int
		833	#endif
		834	ev_default_loop (int methods)
		835	{
		836	if (sigpipe [0] == sigpipe [1])
		837	if (pipe (sigpipe))
		838	return 0;
		839
		840	if (!default_loop)
		841	{
		842	#if EV_MULTIPLICITY
		843	struct ev_loop *loop = default_loop = &default_loop_struct;
		844	#else
		845	default_loop = 1;
		846	#endif
		847
		848	loop_init (EV_A_ methods);
		849
635	if (method)	850	if (ev_method (EV_A))
636	{	851	{
637	ev_watcher_init (&sigev, sigcb);
638	ev_set_priority (&sigev, EV_MAXPRI);
639	siginit (EV_A);	852	siginit (EV_A);
640		853
641	#ifndef WIN32	854	#ifndef WIN32
642	ev_signal_init (&childev, childcb, SIGCHLD);	855	ev_signal_init (&childev, childcb, SIGCHLD);
643	ev_set_priority (&childev, EV_MAXPRI);	856	ev_set_priority (&childev, EV_MAXPRI);
644	ev_signal_start (EV_A_ &childev);	857	ev_signal_start (EV_A_ &childev);
645	ev_unref (EV_A); /* child watcher should not keep loop alive */	858	ev_unref (EV_A); /* child watcher should not keep loop alive */
646	#endif	859	#endif
647	}	860	}
		861	else
		862	default_loop = 0;
648	}	863	}
649		864
650	return method;	865	return default_loop;
651	}	866	}
652		867
653	/*****************************************************************************/
654
655	void	868	void
656	ev_fork_prepare (void)	869	ev_default_destroy (void)
657	{	870	{
658	/* nop */	871	#if EV_MULTIPLICITY
659	}	872	struct ev_loop *loop = default_loop;
660
661	void
662	ev_fork_parent (void)
663	{
664	/* nop */
665	}
666
667	void
668	ev_fork_child (void)
669	{
670	#if EV_USE_EPOLL
671	if (method == EVMETHOD_EPOLL)
672	epoll_postfork_child ();
673	#endif	873	#endif
674		874
		875	#ifndef WIN32
		876	ev_ref (EV_A); /* child watcher */
		877	ev_signal_stop (EV_A_ &childev);
		878	#endif
		879
		880	ev_ref (EV_A); /* signal watcher */
675	ev_io_stop (&sigev);	881	ev_io_stop (EV_A_ &sigev);
676	close (sigpipe [0]);	882
677	close (sigpipe [1]);	883	close (sigpipe [0]); sigpipe [0] = 0;
678	pipe (sigpipe);	884	close (sigpipe [1]); sigpipe [1] = 0;
679	siginit ();	885
		886	loop_destroy (EV_A);
		887	}
		888
		889	void
		890	ev_default_fork (void)
		891	{
		892	#if EV_MULTIPLICITY
		893	struct ev_loop *loop = default_loop;
		894	#endif
		895
		896	if (method)
		897	postfork = 1;
680	}	898	}
681		899
682	/*****************************************************************************/	900	/*****************************************************************************/
683		901
684	static void	902	static void
…		…
700	}	918	}
701		919
702	static void	920	static void
703	timers_reify (EV_P)	921	timers_reify (EV_P)
704	{	922	{
705	while (timercnt && timers [0]->at <= mn_now)	923	while (timercnt && ((WT)timers [0])->at <= mn_now)
706	{	924	{
707	struct ev_timer *w = timers [0];	925	struct ev_timer *w = timers [0];
		926
		927	assert (("inactive timer on timer heap detected", ev_is_active (w)));
708		928
709	/* first reschedule or stop timer */	929	/* first reschedule or stop timer */
710	if (w->repeat)	930	if (w->repeat)
711	{	931	{
712	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	932	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
713	w->at = mn_now + w->repeat;	933	((WT)w)->at = mn_now + w->repeat;
714	downheap ((WT *)timers, timercnt, 0);	934	downheap ((WT *)timers, timercnt, 0);
715	}	935	}
716	else	936	else
717	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	937	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
718		938
719	event ((W)w, EV_TIMEOUT);	939	event (EV_A_ (W)w, EV_TIMEOUT);
720	}	940	}
721	}	941	}
722		942
723	static void	943	static void
724	periodics_reify (EV_P)	944	periodics_reify (EV_P)
725	{	945	{
726	while (periodiccnt && periodics [0]->at <= rt_now)	946	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
727	{	947	{
728	struct ev_periodic *w = periodics [0];	948	struct ev_periodic *w = periodics [0];
		949
		950	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
729		951
730	/* first reschedule or stop timer */	952	/* first reschedule or stop timer */
731	if (w->interval)	953	if (w->interval)
732	{	954	{
733	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	955	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
734	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	956	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
735	downheap ((WT *)periodics, periodiccnt, 0);	957	downheap ((WT *)periodics, periodiccnt, 0);
736	}	958	}
737	else	959	else
738	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	960	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
739		961
740	event (EV_A_ (W)w, EV_PERIODIC);	962	event (EV_A_ (W)w, EV_PERIODIC);
741	}	963	}
742	}	964	}
743		965
744	static void	966	static void
745	periodics_reschedule (EV_P_ ev_tstamp diff)	967	periodics_reschedule (EV_P)
746	{	968	{
747	int i;	969	int i;
748		970
749	/* adjust periodics after time jump */	971	/* adjust periodics after time jump */
750	for (i = 0; i < periodiccnt; ++i)	972	for (i = 0; i < periodiccnt; ++i)
751	{	973	{
752	struct ev_periodic *w = periodics [i];	974	struct ev_periodic *w = periodics [i];
753		975
754	if (w->interval)	976	if (w->interval)
755	{	977	{
756	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	978	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
757		979
758	if (fabs (diff) >= 1e-4)	980	if (fabs (diff) >= 1e-4)
759	{	981	{
760	ev_periodic_stop (EV_A_ w);	982	ev_periodic_stop (EV_A_ w);
761	ev_periodic_start (EV_A_ w);	983	ev_periodic_start (EV_A_ w);
…		…
771	{	993	{
772	mn_now = get_clock ();	994	mn_now = get_clock ();
773		995
774	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	996	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
775	{	997	{
776	rt_now = mn_now + diff;	998	rt_now = rtmn_diff + mn_now;
777	return 0;	999	return 0;
778	}	1000	}
779	else	1001	else
780	{	1002	{
781	now_floor = mn_now;	1003	now_floor = mn_now;
…		…
792	#if EV_USE_MONOTONIC	1014	#if EV_USE_MONOTONIC
793	if (expect_true (have_monotonic))	1015	if (expect_true (have_monotonic))
794	{	1016	{
795	if (time_update_monotonic (EV_A))	1017	if (time_update_monotonic (EV_A))
796	{	1018	{
797	ev_tstamp odiff = diff;	1019	ev_tstamp odiff = rtmn_diff;
798		1020
799	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1021	for (i = 4; --i; ) /* loop a few times, before making important decisions */
800	{	1022	{
801	diff = rt_now - mn_now;	1023	rtmn_diff = rt_now - mn_now;
802		1024
803	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1025	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
804	return; /* all is well */	1026	return; /* all is well */
805		1027
806	rt_now = ev_time ();	1028	rt_now = ev_time ();
807	mn_now = get_clock ();	1029	mn_now = get_clock ();
808	now_floor = mn_now;	1030	now_floor = mn_now;
809	}	1031	}
810		1032
811	periodics_reschedule (EV_A_ diff - odiff);	1033	periodics_reschedule (EV_A);
812	/* no timer adjustment, as the monotonic clock doesn't jump */	1034	/* no timer adjustment, as the monotonic clock doesn't jump */
		1035	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
813	}	1036	}
814	}	1037	}
815	else	1038	else
816	#endif	1039	#endif
817	{	1040	{
818	rt_now = ev_time ();	1041	rt_now = ev_time ();
819		1042
820	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1043	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
821	{	1044	{
822	periodics_reschedule (EV_A_ rt_now - mn_now);	1045	periodics_reschedule (EV_A);
823		1046
824	/* adjust timers. this is easy, as the offset is the same for all */	1047	/* adjust timers. this is easy, as the offset is the same for all */
825	for (i = 0; i < timercnt; ++i)	1048	for (i = 0; i < timercnt; ++i)
826	timers [i]->at += diff;	1049	((WT)timers [i])->at += rt_now - mn_now;
827	}	1050	}
828		1051
829	mn_now = rt_now;	1052	mn_now = rt_now;
830	}	1053	}
831	}	1054	}
…		…
857	{	1080	{
858	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1081	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
859	call_pending (EV_A);	1082	call_pending (EV_A);
860	}	1083	}
861		1084
		1085	/* we might have forked, so reify kernel state if necessary */
		1086	if (expect_false (postfork))
		1087	loop_fork (EV_A);
		1088
862	/* update fd-related kernel structures */	1089	/* update fd-related kernel structures */
863	fd_reify (EV_A);	1090	fd_reify (EV_A);
864		1091
865	/* calculate blocking time */	1092	/* calculate blocking time */
866		1093
…		…
882	{	1109	{
883	block = MAX_BLOCKTIME;	1110	block = MAX_BLOCKTIME;
884		1111
885	if (timercnt)	1112	if (timercnt)
886	{	1113	{
887	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1114	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
888	if (block > to) block = to;	1115	if (block > to) block = to;
889	}	1116	}
890		1117
891	if (periodiccnt)	1118	if (periodiccnt)
892	{	1119	{
893	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1120	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
894	if (block > to) block = to;	1121	if (block > to) block = to;
895	}	1122	}
896		1123
897	if (block < 0.) block = 0.;	1124	if (block < 0.) block = 0.;
898	}	1125	}
…		…
990	return;	1217	return;
991		1218
992	assert (("ev_io_start called with negative fd", fd >= 0));	1219	assert (("ev_io_start called with negative fd", fd >= 0));
993		1220
994	ev_start (EV_A_ (W)w, 1);	1221	ev_start (EV_A_ (W)w, 1);
995	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1222	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
996	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1223	wlist_add ((WL *)&anfds[fd].head, (WL)w);
997		1224
998	fd_change (EV_A_ fd);	1225	fd_change (EV_A_ fd);
999	}	1226	}
1000		1227
…		…
1015	ev_timer_start (EV_P_ struct ev_timer *w)	1242	ev_timer_start (EV_P_ struct ev_timer *w)
1016	{	1243	{
1017	if (ev_is_active (w))	1244	if (ev_is_active (w))
1018	return;	1245	return;
1019		1246
1020	w->at += mn_now;	1247	((WT)w)->at += mn_now;
1021		1248
1022	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1249	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1023		1250
1024	ev_start (EV_A_ (W)w, ++timercnt);	1251	ev_start (EV_A_ (W)w, ++timercnt);
1025	array_needsize (timers, timermax, timercnt, );	1252	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1026	timers [timercnt - 1] = w;	1253	timers [timercnt - 1] = w;
1027	upheap ((WT *)timers, timercnt - 1);	1254	upheap ((WT *)timers, timercnt - 1);
		1255
		1256	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1028	}	1257	}
1029		1258
1030	void	1259	void
1031	ev_timer_stop (EV_P_ struct ev_timer *w)	1260	ev_timer_stop (EV_P_ struct ev_timer *w)
1032	{	1261	{
1033	ev_clear_pending (EV_A_ (W)w);	1262	ev_clear_pending (EV_A_ (W)w);
1034	if (!ev_is_active (w))	1263	if (!ev_is_active (w))
1035	return;	1264	return;
1036		1265
		1266	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1267
1037	if (w->active < timercnt--)	1268	if (((W)w)->active < timercnt--)
1038	{	1269	{
1039	timers [w->active - 1] = timers [timercnt];	1270	timers [((W)w)->active - 1] = timers [timercnt];
1040	downheap ((WT *)timers, timercnt, w->active - 1);	1271	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1041	}	1272	}
1042		1273
1043	w->at = w->repeat;	1274	((WT)w)->at = w->repeat;
1044		1275
1045	ev_stop (EV_A_ (W)w);	1276	ev_stop (EV_A_ (W)w);
1046	}	1277	}
1047		1278
1048	void	1279	void
…		…
1050	{	1281	{
1051	if (ev_is_active (w))	1282	if (ev_is_active (w))
1052	{	1283	{
1053	if (w->repeat)	1284	if (w->repeat)
1054	{	1285	{
1055	w->at = mn_now + w->repeat;	1286	((WT)w)->at = mn_now + w->repeat;
1056	downheap ((WT *)timers, timercnt, w->active - 1);	1287	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1057	}	1288	}
1058	else	1289	else
1059	ev_timer_stop (EV_A_ w);	1290	ev_timer_stop (EV_A_ w);
1060	}	1291	}
1061	else if (w->repeat)	1292	else if (w->repeat)
…		…
1070		1301
1071	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1302	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1072		1303
1073	/* this formula differs from the one in periodic_reify because we do not always round up */	1304	/* this formula differs from the one in periodic_reify because we do not always round up */
1074	if (w->interval)	1305	if (w->interval)
1075	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1306	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
1076		1307
1077	ev_start (EV_A_ (W)w, ++periodiccnt);	1308	ev_start (EV_A_ (W)w, ++periodiccnt);
1078	array_needsize (periodics, periodicmax, periodiccnt, );	1309	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1079	periodics [periodiccnt - 1] = w;	1310	periodics [periodiccnt - 1] = w;
1080	upheap ((WT *)periodics, periodiccnt - 1);	1311	upheap ((WT *)periodics, periodiccnt - 1);
		1312
		1313	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1081	}	1314	}
1082		1315
1083	void	1316	void
1084	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1317	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1085	{	1318	{
1086	ev_clear_pending (EV_A_ (W)w);	1319	ev_clear_pending (EV_A_ (W)w);
1087	if (!ev_is_active (w))	1320	if (!ev_is_active (w))
1088	return;	1321	return;
1089		1322
		1323	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1324
1090	if (w->active < periodiccnt--)	1325	if (((W)w)->active < periodiccnt--)
1091	{	1326	{
1092	periodics [w->active - 1] = periodics [periodiccnt];	1327	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1093	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1328	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1094	}	1329	}
1095		1330
		1331	ev_stop (EV_A_ (W)w);
		1332	}
		1333
		1334	void
		1335	ev_idle_start (EV_P_ struct ev_idle *w)
		1336	{
		1337	if (ev_is_active (w))
		1338	return;
		1339
		1340	ev_start (EV_A_ (W)w, ++idlecnt);
		1341	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1342	idles [idlecnt - 1] = w;
		1343	}
		1344
		1345	void
		1346	ev_idle_stop (EV_P_ struct ev_idle *w)
		1347	{
		1348	ev_clear_pending (EV_A_ (W)w);
		1349	if (ev_is_active (w))
		1350	return;
		1351
		1352	idles [((W)w)->active - 1] = idles [--idlecnt];
		1353	ev_stop (EV_A_ (W)w);
		1354	}
		1355
		1356	void
		1357	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1358	{
		1359	if (ev_is_active (w))
		1360	return;
		1361
		1362	ev_start (EV_A_ (W)w, ++preparecnt);
		1363	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1364	prepares [preparecnt - 1] = w;
		1365	}
		1366
		1367	void
		1368	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1369	{
		1370	ev_clear_pending (EV_A_ (W)w);
		1371	if (ev_is_active (w))
		1372	return;
		1373
		1374	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1375	ev_stop (EV_A_ (W)w);
		1376	}
		1377
		1378	void
		1379	ev_check_start (EV_P_ struct ev_check *w)
		1380	{
		1381	if (ev_is_active (w))
		1382	return;
		1383
		1384	ev_start (EV_A_ (W)w, ++checkcnt);
		1385	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1386	checks [checkcnt - 1] = w;
		1387	}
		1388
		1389	void
		1390	ev_check_stop (EV_P_ struct ev_check *w)
		1391	{
		1392	ev_clear_pending (EV_A_ (W)w);
		1393	if (ev_is_active (w))
		1394	return;
		1395
		1396	checks [((W)w)->active - 1] = checks [--checkcnt];
1096	ev_stop (EV_A_ (W)w);	1397	ev_stop (EV_A_ (W)w);
1097	}	1398	}
1098		1399
1099	#ifndef SA_RESTART	1400	#ifndef SA_RESTART
1100	# define SA_RESTART 0	1401	# define SA_RESTART 0
1101	#endif	1402	#endif
1102		1403
1103	void	1404	void
1104	ev_signal_start (EV_P_ struct ev_signal *w)	1405	ev_signal_start (EV_P_ struct ev_signal *w)
1105	{	1406	{
		1407	#if EV_MULTIPLICITY
		1408	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1409	#endif
1106	if (ev_is_active (w))	1410	if (ev_is_active (w))
1107	return;	1411	return;
1108		1412
1109	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1413	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1110		1414
1111	ev_start (EV_A_ (W)w, 1);	1415	ev_start (EV_A_ (W)w, 1);
1112	array_needsize (signals, signalmax, w->signum, signals_init);	1416	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1113	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1417	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1114		1418
1115	if (!w->next)	1419	if (!((WL)w)->next)
1116	{	1420	{
		1421	#if WIN32
		1422	signal (w->signum, sighandler);
		1423	#else
1117	struct sigaction sa;	1424	struct sigaction sa;
1118	sa.sa_handler = sighandler;	1425	sa.sa_handler = sighandler;
1119	sigfillset (&sa.sa_mask);	1426	sigfillset (&sa.sa_mask);
1120	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1427	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1121	sigaction (w->signum, &sa, 0);	1428	sigaction (w->signum, &sa, 0);
		1429	#endif
1122	}	1430	}
1123	}	1431	}
1124		1432
1125	void	1433	void
1126	ev_signal_stop (EV_P_ struct ev_signal *w)	1434	ev_signal_stop (EV_P_ struct ev_signal *w)
…		…
1135	if (!signals [w->signum - 1].head)	1443	if (!signals [w->signum - 1].head)
1136	signal (w->signum, SIG_DFL);	1444	signal (w->signum, SIG_DFL);
1137	}	1445	}
1138		1446
1139	void	1447	void
1140	ev_idle_start (EV_P_ struct ev_idle *w)
1141	{
1142	if (ev_is_active (w))
1143	return;
1144
1145	ev_start (EV_A_ (W)w, ++idlecnt);
1146	array_needsize (idles, idlemax, idlecnt, );
1147	idles [idlecnt - 1] = w;
1148	}
1149
1150	void
1151	ev_idle_stop (EV_P_ struct ev_idle *w)
1152	{
1153	ev_clear_pending (EV_A_ (W)w);
1154	if (ev_is_active (w))
1155	return;
1156
1157	idles [w->active - 1] = idles [--idlecnt];
1158	ev_stop (EV_A_ (W)w);
1159	}
1160
1161	void
1162	ev_prepare_start (EV_P_ struct ev_prepare *w)
1163	{
1164	if (ev_is_active (w))
1165	return;
1166
1167	ev_start (EV_A_ (W)w, ++preparecnt);
1168	array_needsize (prepares, preparemax, preparecnt, );
1169	prepares [preparecnt - 1] = w;
1170	}
1171
1172	void
1173	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1174	{
1175	ev_clear_pending (EV_A_ (W)w);
1176	if (ev_is_active (w))
1177	return;
1178
1179	prepares [w->active - 1] = prepares [--preparecnt];
1180	ev_stop (EV_A_ (W)w);
1181	}
1182
1183	void
1184	ev_check_start (EV_P_ struct ev_check *w)
1185	{
1186	if (ev_is_active (w))
1187	return;
1188
1189	ev_start (EV_A_ (W)w, ++checkcnt);
1190	array_needsize (checks, checkmax, checkcnt, );
1191	checks [checkcnt - 1] = w;
1192	}
1193
1194	void
1195	ev_check_stop (EV_P_ struct ev_check *w)
1196	{
1197	ev_clear_pending (EV_A_ (W)w);
1198	if (ev_is_active (w))
1199	return;
1200
1201	checks [w->active - 1] = checks [--checkcnt];
1202	ev_stop (EV_A_ (W)w);
1203	}
1204
1205	void
1206	ev_child_start (EV_P_ struct ev_child *w)	1448	ev_child_start (EV_P_ struct ev_child *w)
1207	{	1449	{
		1450	#if EV_MULTIPLICITY
		1451	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1452	#endif
1208	if (ev_is_active (w))	1453	if (ev_is_active (w))
1209	return;	1454	return;
1210		1455
1211	ev_start (EV_A_ (W)w, 1);	1456	ev_start (EV_A_ (W)w, 1);
1212	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1457	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
…		…
1239	void (cb)(int revents, void arg) = once->cb;	1484	void (cb)(int revents, void arg) = once->cb;
1240	void *arg = once->arg;	1485	void *arg = once->arg;
1241		1486
1242	ev_io_stop (EV_A_ &once->io);	1487	ev_io_stop (EV_A_ &once->io);
1243	ev_timer_stop (EV_A_ &once->to);	1488	ev_timer_stop (EV_A_ &once->to);
1244	free (once);	1489	ev_free (once);
1245		1490
1246	cb (revents, arg);	1491	cb (revents, arg);
1247	}	1492	}
1248		1493
1249	static void	1494	static void
…		…
1259	}	1504	}
1260		1505
1261	void	1506	void
1262	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1507	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1263	{	1508	{
1264	struct ev_once *once = malloc (sizeof (struct ev_once));	1509	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1265		1510
1266	if (!once)	1511	if (!once)
1267	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1512	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1268	else	1513	else
1269	{	1514	{
…		…
1284	ev_timer_start (EV_A_ &once->to);	1529	ev_timer_start (EV_A_ &once->to);
1285	}	1530	}
1286	}	1531	}
1287	}	1532	}
1288		1533
1289	/*****************************************************************************/
1290
1291	#if 0
1292
1293	struct ev_io wio;
1294
1295	static void
1296	sin_cb (struct ev_io *w, int revents)
1297	{
1298	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1299	}
1300
1301	static void
1302	ocb (struct ev_timer *w, int revents)
1303	{
1304	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1305	ev_timer_stop (w);
1306	ev_timer_start (w);
1307	}
1308
1309	static void
1310	scb (struct ev_signal *w, int revents)
1311	{
1312	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1313	ev_io_stop (&wio);
1314	ev_io_start (&wio);
1315	}
1316
1317	static void
1318	gcb (struct ev_signal *w, int revents)
1319	{
1320	fprintf (stderr, "generic %x\n", revents);
1321
1322	}
1323
1324	int main (void)
1325	{
1326	ev_init (0);
1327
1328	ev_io_init (&wio, sin_cb, 0, EV_READ);
1329	ev_io_start (&wio);
1330
1331	struct ev_timer t[10000];
1332
1333	#if 0
1334	int i;
1335	for (i = 0; i < 10000; ++i)
1336	{
1337	struct ev_timer *w = t + i;
1338	ev_watcher_init (w, ocb, i);
1339	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1340	ev_timer_start (w);
1341	if (drand48 () < 0.5)
1342	ev_timer_stop (w);
1343	}
1344	#endif
1345
1346	struct ev_timer t1;
1347	ev_timer_init (&t1, ocb, 5, 10);
1348	ev_timer_start (&t1);
1349
1350	struct ev_signal sig;
1351	ev_signal_init (&sig, scb, SIGQUIT);
1352	ev_signal_start (&sig);
1353
1354	struct ev_check cw;
1355	ev_check_init (&cw, gcb);
1356	ev_check_start (&cw);
1357
1358	struct ev_idle iw;
1359	ev_idle_init (&iw, gcb);
1360	ev_idle_start (&iw);
1361
1362	ev_loop (0);
1363
1364	return 0;
1365	}
1366
1367	#endif
1368
1369
1370
1371

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Comparing libev/ev.c (file contents): Revision 1.52 by root, Sat Nov 3 22:10:39 2007 UTC vs. Revision 1.75 by root, Tue Nov 6 19:29:20 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.52 by root, Sat Nov 3 22:10:39 2007 UTC vs.
Revision 1.75 by root, Tue Nov 6 19:29:20 2007 UTC