[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 1.72 by root, Tue Nov 6 16:09:37 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	#if WIN32
		154	/* note: the comment below could not be substantiated, but what would I care */
		155	/* MSDN says this is required to handle SIGFPE */
		156	volatile double SIGFPE_REQ = 0.0f;
123		157
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	158	static int
125	static void (*method_modify)(EV_P_ int fd, int oev, int nev);	159	ev_socketpair_tcp (int filedes [2])
126	static void (*method_poll)(EV_P_ ev_tstamp timeout);	160	{
		161	struct sockaddr_in addr = { 0 };
		162	int addr_size = sizeof (addr);
		163	SOCKET listener;
		164	SOCKET sock [2] = { -1, -1 };
127		165
128	static int activecnt; /* number of active events */	166	if ((listener = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
		167	return -1;
129		168
130	#if EV_USE_SELECT	169	addr.sin_family = AF_INET;
131	static unsigned char vec_ri, vec_ro, vec_wi, vec_wo;	170	addr.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
132	static int vec_max;	171	addr.sin_port = 0;
133	#endif
134		172
135	#if EV_USEV_POLL	173	if (bind (listener, (struct sockaddr *)&addr, addr_size))
136	static struct pollfd *polls;	174	goto fail;
137	static int pollmax, pollcnt;
138	static int pollidxs; / maps fds into structure indices */
139	static int pollidxmax;
140	#endif
141		175
142	#if EV_USE_EPOLL	176	if (getsockname(listener, (struct sockaddr *)&addr, &addr_size))
143	static int epoll_fd = -1;	177	goto fail;
144		178
145	static struct epoll_event *events;	179	if (listen (listener, 1))
146	static int eventmax;	180	goto fail;
147	#endif
148		181
149	#if EV_USE_KQUEUE	182	if ((sock [0] = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
150	static int kqueue_fd;	183	goto fail;
151	static struct kevent *kqueue_changes;	184
152	static int kqueue_changemax, kqueue_changecnt;	185	if (connect (sock[0], (struct sockaddr *)&addr, addr_size))
153	static struct kevent *kqueue_events;	186	goto fail;
154	static int kqueue_eventmax;	187
		188	if ((sock[1] = accept (listener, 0, 0)) < 0)
		189	goto fail;
		190
		191	closesocket (listener);
		192
		193	filedes [0] = sock [0];
		194	filedes [1] = sock [1];
		195
		196	return 0;
		197
		198	fail:
		199	closesocket (listener);
		200
		201	if (sock [0] != INVALID_SOCKET) closesocket (sock [0]);
		202	if (sock [1] != INVALID_SOCKET) closesocket (sock [1]);
		203
		204	return -1;
		205	}
		206
		207	# define ev_pipe(filedes) ev_socketpair_tcp (filedes)
		208	#else
		209	# define ev_pipe(filedes) pipe (filedes)
		210	#endif
		211
		212	/*****************************************************************************/
		213
		214	static void (syserr_cb)(const char msg);
		215
		216	void ev_set_syserr_cb (void (cb)(const char msg))
		217	{
		218	syserr_cb = cb;
		219	}
		220
		221	static void
		222	syserr (const char *msg)
		223	{
		224	if (!msg)
		225	msg = "(libev) system error";
		226
		227	if (syserr_cb)
		228	syserr_cb (msg);
		229	else
		230	{
		231	perror (msg);
		232	abort ();
		233	}
		234	}
		235
		236	static void (alloc)(void *ptr, long size);
		237
		238	void ev_set_allocator (void (cb)(void *ptr, long size))
		239	{
		240	alloc = cb;
		241	}
		242
		243	static void *
		244	ev_realloc (void *ptr, long size)
		245	{
		246	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		247
		248	if (!ptr && size)
		249	{
		250	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		251	abort ();
		252	}
		253
		254	return ptr;
		255	}
		256
		257	#define ev_malloc(size) ev_realloc (0, (size))
		258	#define ev_free(ptr) ev_realloc ((ptr), 0)
		259
		260	/*****************************************************************************/
		261
		262	typedef struct
		263	{
		264	WL head;
		265	unsigned char events;
		266	unsigned char reify;
		267	} ANFD;
		268
		269	typedef struct
		270	{
		271	W w;
		272	int events;
		273	} ANPENDING;
		274
		275	#if EV_MULTIPLICITY
		276
		277	struct ev_loop
		278	{
		279	# define VAR(name,decl) decl;
		280	# include "ev_vars.h"
		281	};
		282	# undef VAR
		283	# include "ev_wrap.h"
		284
		285	#else
		286
		287	# define VAR(name,decl) static decl;
		288	# include "ev_vars.h"
		289	# undef VAR
		290
155	#endif	291	#endif
156		292
157	/*****************************************************************************/	293	/*****************************************************************************/
158		294
159	inline ev_tstamp	295	inline ev_tstamp
…		…
191	return rt_now;	327	return rt_now;
192	}	328	}
193		329
194	#define array_roundsize(base,n) ((n) \| 4 & ~3)	330	#define array_roundsize(base,n) ((n) \| 4 & ~3)
195		331
196	#define array_needsize(base,cur,cnt,init) \	332	#define array_needsize(base,cur,cnt,init) \
197	if (expect_false ((cnt) > cur)) \	333	if (expect_false ((cnt) > cur)) \
198	{ \	334	{ \
199	int newcnt = cur; \	335	int newcnt = cur; \
200	do \	336	do \
201	{ \	337	{ \
202	newcnt = array_roundsize (base, newcnt << 1); \	338	newcnt = array_roundsize (base, newcnt << 1); \
203	} \	339	} \
204	while ((cnt) > newcnt); \	340	while ((cnt) > newcnt); \
205	\	341	\
206	base = realloc (base, sizeof (base) (newcnt)); \	342	base = ev_realloc (base, sizeof (base) (newcnt)); \
207	init (base + cur, newcnt - cur); \	343	init (base + cur, newcnt - cur); \
208	cur = newcnt; \	344	cur = newcnt; \
209	}	345	}
		346
		347	#define array_slim(stem) \
		348	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		349	{ \
		350	stem ## max = array_roundsize (stem ## cnt >> 1); \
		351	base = ev_realloc (base, sizeof (base) (stem ## max)); \
		352	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		353	}
		354
		355	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
		356	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
		357	#define array_free_microshit(stem) \
		358	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
		359
		360	#define array_free(stem, idx) \
		361	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
210		362
211	/*****************************************************************************/	363	/*****************************************************************************/
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		364
223	static void	365	static void
224	anfds_init (ANFD *base, int count)	366	anfds_init (ANFD *base, int count)
225	{	367	{
226	while (count--)	368	while (count--)
…		…
231		373
232	++base;	374	++base;
233	}	375	}
234	}	376	}
235		377
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	378	static void
246	event (EV_P_ W w, int events)	379	event (EV_P_ W w, int events)
247	{	380	{
248	if (w->pending)	381	if (w->pending)
249	{	382	{
250	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	383	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
251	return;	384	return;
252	}	385	}
253		386
254	w->pending = ++pendingcnt [ABSPRI (w)];	387	w->pending = ++pendingcnt [ABSPRI (w)];
255	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	388	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));
256	pendings [ABSPRI (w)][w->pending - 1].w = w;	389	pendings [ABSPRI (w)][w->pending - 1].w = w;
257	pendings [ABSPRI (w)][w->pending - 1].events = events;	390	pendings [ABSPRI (w)][w->pending - 1].events = events;
258	}	391	}
259		392
260	static void	393	static void
…		…
280	event (EV_A_ (W)w, ev);	413	event (EV_A_ (W)w, ev);
281	}	414	}
282	}	415	}
283		416
284	/*****************************************************************************/	417	/*****************************************************************************/
285
286	static int *fdchanges;
287	static int fdchangemax, fdchangecnt;
288		418
289	static void	419	static void
290	fd_reify (EV_P)	420	fd_reify (EV_P)
291	{	421	{
292	int i;	422	int i;
…		…
302	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	432	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
303	events \|= w->events;	433	events \|= w->events;
304		434
305	anfd->reify = 0;	435	anfd->reify = 0;
306		436
307	if (anfd->events != events)
308	{
309	method_modify (EV_A_ fd, anfd->events, events);	437	method_modify (EV_A_ fd, anfd->events, events);
310	anfd->events = events;	438	anfd->events = events;
311	}
312	}	439	}
313		440
314	fdchangecnt = 0;	441	fdchangecnt = 0;
315	}	442	}
316		443
317	static void	444	static void
318	fd_change (EV_P_ int fd)	445	fd_change (EV_P_ int fd)
319	{	446	{
320	if (anfds [fd].reify \|\| fdchangecnt < 0)	447	if (anfds [fd].reify)
321	return;	448	return;
322		449
323	anfds [fd].reify = 1;	450	anfds [fd].reify = 1;
324		451
325	++fdchangecnt;	452	++fdchangecnt;
326	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	453	array_needsize (fdchanges, fdchangemax, fdchangecnt, (void));
327	fdchanges [fdchangecnt - 1] = fd;	454	fdchanges [fdchangecnt - 1] = fd;
328	}	455	}
329		456
330	static void	457	static void
331	fd_kill (EV_P_ int fd)	458	fd_kill (EV_P_ int fd)
…		…
337	ev_io_stop (EV_A_ w);	464	ev_io_stop (EV_A_ w);
338	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	465	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
339	}	466	}
340	}	467	}
341		468
		469	static int
		470	fd_valid (int fd)
		471	{
		472	#ifdef WIN32
		473	return !!win32_get_osfhandle (fd);
		474	#else
		475	return fcntl (fd, F_GETFD) != -1;
		476	#endif
		477	}
		478
342	/* called on EBADF to verify fds */	479	/* called on EBADF to verify fds */
343	static void	480	static void
344	fd_ebadf (EV_P)	481	fd_ebadf (EV_P)
345	{	482	{
346	int fd;	483	int fd;
347		484
348	for (fd = 0; fd < anfdmax; ++fd)	485	for (fd = 0; fd < anfdmax; ++fd)
349	if (anfds [fd].events)	486	if (anfds [fd].events)
350	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	487	if (!fd_valid (fd) == -1 && errno == EBADF)
351	fd_kill (EV_A_ fd);	488	fd_kill (EV_A_ fd);
352	}	489	}
353		490
354	/* called on ENOMEM in select/poll to kill some fds and retry */	491	/* called on ENOMEM in select/poll to kill some fds and retry */
355	static void	492	static void
356	fd_enomem (EV_P)	493	fd_enomem (EV_P)
357	{	494	{
358	int fd = anfdmax;	495	int fd;
359		496
360	while (fd--)	497	for (fd = anfdmax; fd--; )
361	if (anfds [fd].events)	498	if (anfds [fd].events)
362	{	499	{
363	close (fd);
364	fd_kill (EV_A_ fd);	500	fd_kill (EV_A_ fd);
365	return;	501	return;
366	}	502	}
367	}	503	}
368		504
		505	/* usually called after fork if method needs to re-arm all fds from scratch */
		506	static void
		507	fd_rearm_all (EV_P)
		508	{
		509	int fd;
		510
		511	/* this should be highly optimised to not do anything but set a flag */
		512	for (fd = 0; fd < anfdmax; ++fd)
		513	if (anfds [fd].events)
		514	{
		515	anfds [fd].events = 0;
		516	fd_change (EV_A_ fd);
		517	}
		518	}
		519
369	/*****************************************************************************/	520	/*****************************************************************************/
370		521
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	522	static void
378	upheap (WT *timers, int k)	523	upheap (WT *heap, int k)
379	{	524	{
380	WT w = timers [k];	525	WT w = heap [k];
381		526
382	while (k && timers [k >> 1]->at > w->at)	527	while (k && heap [k >> 1]->at > w->at)
383	{	528	{
384	timers [k] = timers [k >> 1];	529	heap [k] = heap [k >> 1];
385	timers [k]->active = k + 1;	530	((W)heap [k])->active = k + 1;
386	k >>= 1;	531	k >>= 1;
387	}	532	}
388		533
389	timers [k] = w;	534	heap [k] = w;
390	timers [k]->active = k + 1;	535	((W)heap [k])->active = k + 1;
391		536
392	}	537	}
393		538
394	static void	539	static void
395	downheap (WT *timers, int N, int k)	540	downheap (WT *heap, int N, int k)
396	{	541	{
397	WT w = timers [k];	542	WT w = heap [k];
398		543
399	while (k < (N >> 1))	544	while (k < (N >> 1))
400	{	545	{
401	int j = k << 1;	546	int j = k << 1;
402		547
403	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	548	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
404	++j;	549	++j;
405		550
406	if (w->at <= timers [j]->at)	551	if (w->at <= heap [j]->at)
407	break;	552	break;
408		553
409	timers [k] = timers [j];	554	heap [k] = heap [j];
410	timers [k]->active = k + 1;	555	((W)heap [k])->active = k + 1;
411	k = j;	556	k = j;
412	}	557	}
413		558
414	timers [k] = w;	559	heap [k] = w;
415	timers [k]->active = k + 1;	560	((W)heap [k])->active = k + 1;
416	}	561	}
417		562
418	/*****************************************************************************/	563	/*****************************************************************************/
419		564
420	typedef struct	565	typedef struct
421	{	566	{
422	struct ev_watcher_list *head;	567	WL head;
423	sig_atomic_t volatile gotsig;	568	sig_atomic_t volatile gotsig;
424	} ANSIG;	569	} ANSIG;
425		570
426	static ANSIG *signals;	571	static ANSIG *signals;
427	static int signalmax;	572	static int signalmax;
…		…
443	}	588	}
444		589
445	static void	590	static void
446	sighandler (int signum)	591	sighandler (int signum)
447	{	592	{
		593	#if WIN32
		594	signal (signum, sighandler);
		595	#endif
		596
448	signals [signum - 1].gotsig = 1;	597	signals [signum - 1].gotsig = 1;
449		598
450	if (!gotsig)	599	if (!gotsig)
451	{	600	{
452	int old_errno = errno;	601	int old_errno = errno;
…		…
457	}	606	}
458		607
459	static void	608	static void
460	sigcb (EV_P_ struct ev_io *iow, int revents)	609	sigcb (EV_P_ struct ev_io *iow, int revents)
461	{	610	{
462	struct ev_watcher_list *w;	611	WL w;
463	int signum;	612	int signum;
464		613
465	read (sigpipe [0], &revents, 1);	614	read (sigpipe [0], &revents, 1);
466	gotsig = 0;	615	gotsig = 0;
467		616
…		…
486	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	635	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
487	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	636	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
488	#endif	637	#endif
489		638
490	ev_io_set (&sigev, sigpipe [0], EV_READ);	639	ev_io_set (&sigev, sigpipe [0], EV_READ);
491	ev_io_start (&sigev);	640	ev_io_start (EV_A_ &sigev);
492	ev_unref (EV_A); /* child watcher should not keep loop alive */	641	ev_unref (EV_A); /* child watcher should not keep loop alive */
493	}	642	}
494		643
495	/*****************************************************************************/	644	/*****************************************************************************/
496		645
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];	646	static struct ev_child *childs [PID_HASHSIZE];
		647
		648	#ifndef WIN32
		649
509	static struct ev_signal childev;	650	static struct ev_signal childev;
510
511	#ifndef WIN32
512		651
513	#ifndef WCONTINUED	652	#ifndef WCONTINUED
514	# define WCONTINUED 0	653	# define WCONTINUED 0
515	#endif	654	#endif
516		655
…		…
520	struct ev_child *w;	659	struct ev_child *w;
521		660
522	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	661	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)	662	if (w->pid == pid \|\| !w->pid)
524	{	663	{
525	w->priority = sw->priority; /* need to do it now */	664	ev_priority (w) = ev_priority (sw); /* need to do it now */
526	w->rpid = pid;	665	w->rpid = pid;
527	w->rstatus = status;	666	w->rstatus = status;
528	event (EV_A_ (W)w, EV_CHILD);	667	event (EV_A_ (W)w, EV_CHILD);
529	}	668	}
530	}	669	}
531		670
532	static void	671	static void
…		…
552	# include "ev_kqueue.c"	691	# include "ev_kqueue.c"
553	#endif	692	#endif
554	#if EV_USE_EPOLL	693	#if EV_USE_EPOLL
555	# include "ev_epoll.c"	694	# include "ev_epoll.c"
556	#endif	695	#endif
557	#if EV_USEV_POLL	696	#if EV_USE_POLL
558	# include "ev_poll.c"	697	# include "ev_poll.c"
559	#endif	698	#endif
560	#if EV_USE_SELECT	699	#if EV_USE_SELECT
561	# include "ev_select.c"	700	# include "ev_select.c"
562	#endif	701	#endif
…		…
589	ev_method (EV_P)	728	ev_method (EV_P)
590	{	729	{
591	return method;	730	return method;
592	}	731	}
593		732
594	int	733	static void
595	ev_init (EV_P_ int methods)	734	loop_init (EV_P_ int methods)
596	{	735	{
597	if (!method)	736	if (!method)
598	{	737	{
599	#if EV_USE_MONOTONIC	738	#if EV_USE_MONOTONIC
600	{	739	{
…		…
605	#endif	744	#endif
606		745
607	rt_now = ev_time ();	746	rt_now = ev_time ();
608	mn_now = get_clock ();	747	mn_now = get_clock ();
609	now_floor = mn_now;	748	now_floor = mn_now;
610	diff = rt_now - mn_now;	749	rtmn_diff = rt_now - mn_now;
611
612	if (pipe (sigpipe))
613	return 0;
614		750
615	if (methods == EVMETHOD_AUTO)	751	if (methods == EVMETHOD_AUTO)
616	if (!enable_secure () && getenv ("LIBmethodS"))	752	if (!enable_secure () && getenv ("LIBEV_METHODS"))
617	methods = atoi (getenv ("LIBmethodS"));	753	methods = atoi (getenv ("LIBEV_METHODS"));
618	else	754	else
619	methods = EVMETHOD_ANY;	755	methods = EVMETHOD_ANY;
620		756
621	method = 0;	757	method = 0;
		758	#if EV_USE_WIN32
		759	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		760	#endif
622	#if EV_USE_KQUEUE	761	#if EV_USE_KQUEUE
623	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	762	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
624	#endif	763	#endif
625	#if EV_USE_EPOLL	764	#if EV_USE_EPOLL
626	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	765	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
627	#endif	766	#endif
628	#if EV_USEV_POLL	767	#if EV_USE_POLL
629	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	768	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
630	#endif	769	#endif
631	#if EV_USE_SELECT	770	#if EV_USE_SELECT
632	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	771	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
633	#endif	772	#endif
634		773
		774	ev_watcher_init (&sigev, sigcb);
		775	ev_set_priority (&sigev, EV_MAXPRI);
		776	}
		777	}
		778
		779	void
		780	loop_destroy (EV_P)
		781	{
		782	int i;
		783
		784	#if EV_USE_WIN32
		785	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		786	#endif
		787	#if EV_USE_KQUEUE
		788	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		789	#endif
		790	#if EV_USE_EPOLL
		791	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		792	#endif
		793	#if EV_USE_POLL
		794	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		795	#endif
		796	#if EV_USE_SELECT
		797	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		798	#endif
		799
		800	for (i = NUMPRI; i--; )
		801	array_free (pending, [i]);
		802
		803	/* have to use the microsoft-never-gets-it-right macro */
		804	array_free_microshit (fdchange);
		805	array_free_microshit (timer);
		806	array_free_microshit (periodic);
		807	array_free_microshit (idle);
		808	array_free_microshit (prepare);
		809	array_free_microshit (check);
		810
		811	method = 0;
		812	}
		813
		814	static void
		815	loop_fork (EV_P)
		816	{
		817	#if EV_USE_EPOLL
		818	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		819	#endif
		820	#if EV_USE_KQUEUE
		821	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		822	#endif
		823
		824	if (ev_is_active (&sigev))
		825	{
		826	/* default loop */
		827
		828	ev_ref (EV_A);
		829	ev_io_stop (EV_A_ &sigev);
		830	close (sigpipe [0]);
		831	close (sigpipe [1]);
		832
		833	while (ev_pipe (sigpipe))
		834	syserr ("(libev) error creating pipe");
		835
		836	siginit (EV_A);
		837	}
		838
		839	postfork = 0;
		840	}
		841
		842	#if EV_MULTIPLICITY
		843	struct ev_loop *
		844	ev_loop_new (int methods)
		845	{
		846	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		847
		848	memset (loop, 0, sizeof (struct ev_loop));
		849
		850	loop_init (EV_A_ methods);
		851
		852	if (ev_method (EV_A))
		853	return loop;
		854
		855	return 0;
		856	}
		857
		858	void
		859	ev_loop_destroy (EV_P)
		860	{
		861	loop_destroy (EV_A);
		862	ev_free (loop);
		863	}
		864
		865	void
		866	ev_loop_fork (EV_P)
		867	{
		868	postfork = 1;
		869	}
		870
		871	#endif
		872
		873	#if EV_MULTIPLICITY
		874	struct ev_loop default_loop_struct;
		875	static struct ev_loop *default_loop;
		876
		877	struct ev_loop *
		878	#else
		879	static int default_loop;
		880
		881	int
		882	#endif
		883	ev_default_loop (int methods)
		884	{
		885	if (sigpipe [0] == sigpipe [1])
		886	if (ev_pipe (sigpipe))
		887	return 0;
		888
		889	if (!default_loop)
		890	{
		891	#if EV_MULTIPLICITY
		892	struct ev_loop *loop = default_loop = &default_loop_struct;
		893	#else
		894	default_loop = 1;
		895	#endif
		896
		897	loop_init (EV_A_ methods);
		898
635	if (method)	899	if (ev_method (EV_A))
636	{	900	{
637	ev_watcher_init (&sigev, sigcb);
638	ev_set_priority (&sigev, EV_MAXPRI);
639	siginit (EV_A);	901	siginit (EV_A);
640		902
641	#ifndef WIN32	903	#ifndef WIN32
642	ev_signal_init (&childev, childcb, SIGCHLD);	904	ev_signal_init (&childev, childcb, SIGCHLD);
643	ev_set_priority (&childev, EV_MAXPRI);	905	ev_set_priority (&childev, EV_MAXPRI);
644	ev_signal_start (EV_A_ &childev);	906	ev_signal_start (EV_A_ &childev);
645	ev_unref (EV_A); /* child watcher should not keep loop alive */	907	ev_unref (EV_A); /* child watcher should not keep loop alive */
646	#endif	908	#endif
647	}	909	}
		910	else
		911	default_loop = 0;
648	}	912	}
649		913
650	return method;	914	return default_loop;
651	}	915	}
652		916
653	/*****************************************************************************/
654
655	void	917	void
656	ev_fork_prepare (void)	918	ev_default_destroy (void)
657	{	919	{
658	/* nop */	920	#if EV_MULTIPLICITY
659	}	921	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	922	#endif
674		923
		924	#ifndef WIN32
		925	ev_ref (EV_A); /* child watcher */
		926	ev_signal_stop (EV_A_ &childev);
		927	#endif
		928
		929	ev_ref (EV_A); /* signal watcher */
675	ev_io_stop (&sigev);	930	ev_io_stop (EV_A_ &sigev);
676	close (sigpipe [0]);	931
677	close (sigpipe [1]);	932	close (sigpipe [0]); sigpipe [0] = 0;
678	pipe (sigpipe);	933	close (sigpipe [1]); sigpipe [1] = 0;
679	siginit ();	934
		935	loop_destroy (EV_A);
		936	}
		937
		938	void
		939	ev_default_fork (void)
		940	{
		941	#if EV_MULTIPLICITY
		942	struct ev_loop *loop = default_loop;
		943	#endif
		944
		945	if (method)
		946	postfork = 1;
680	}	947	}
681		948
682	/*****************************************************************************/	949	/*****************************************************************************/
683		950
684	static void	951	static void
…		…
700	}	967	}
701		968
702	static void	969	static void
703	timers_reify (EV_P)	970	timers_reify (EV_P)
704	{	971	{
705	while (timercnt && timers [0]->at <= mn_now)	972	while (timercnt && ((WT)timers [0])->at <= mn_now)
706	{	973	{
707	struct ev_timer *w = timers [0];	974	struct ev_timer *w = timers [0];
		975
		976	assert (("inactive timer on timer heap detected", ev_is_active (w)));
708		977
709	/* first reschedule or stop timer */	978	/* first reschedule or stop timer */
710	if (w->repeat)	979	if (w->repeat)
711	{	980	{
712	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	981	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
713	w->at = mn_now + w->repeat;	982	((WT)w)->at = mn_now + w->repeat;
714	downheap ((WT *)timers, timercnt, 0);	983	downheap ((WT *)timers, timercnt, 0);
715	}	984	}
716	else	985	else
717	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	986	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
718		987
719	event ((W)w, EV_TIMEOUT);	988	event (EV_A_ (W)w, EV_TIMEOUT);
720	}	989	}
721	}	990	}
722		991
723	static void	992	static void
724	periodics_reify (EV_P)	993	periodics_reify (EV_P)
725	{	994	{
726	while (periodiccnt && periodics [0]->at <= rt_now)	995	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
727	{	996	{
728	struct ev_periodic *w = periodics [0];	997	struct ev_periodic *w = periodics [0];
		998
		999	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
729		1000
730	/* first reschedule or stop timer */	1001	/* first reschedule or stop timer */
731	if (w->interval)	1002	if (w->interval)
732	{	1003	{
733	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1004	((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));	1005	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
735	downheap ((WT *)periodics, periodiccnt, 0);	1006	downheap ((WT *)periodics, periodiccnt, 0);
736	}	1007	}
737	else	1008	else
738	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1009	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
739		1010
740	event (EV_A_ (W)w, EV_PERIODIC);	1011	event (EV_A_ (W)w, EV_PERIODIC);
741	}	1012	}
742	}	1013	}
743		1014
744	static void	1015	static void
745	periodics_reschedule (EV_P_ ev_tstamp diff)	1016	periodics_reschedule (EV_P)
746	{	1017	{
747	int i;	1018	int i;
748		1019
749	/* adjust periodics after time jump */	1020	/* adjust periodics after time jump */
750	for (i = 0; i < periodiccnt; ++i)	1021	for (i = 0; i < periodiccnt; ++i)
751	{	1022	{
752	struct ev_periodic *w = periodics [i];	1023	struct ev_periodic *w = periodics [i];
753		1024
754	if (w->interval)	1025	if (w->interval)
755	{	1026	{
756	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1027	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
757		1028
758	if (fabs (diff) >= 1e-4)	1029	if (fabs (diff) >= 1e-4)
759	{	1030	{
760	ev_periodic_stop (EV_A_ w);	1031	ev_periodic_stop (EV_A_ w);
761	ev_periodic_start (EV_A_ w);	1032	ev_periodic_start (EV_A_ w);
…		…
771	{	1042	{
772	mn_now = get_clock ();	1043	mn_now = get_clock ();
773		1044
774	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1045	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
775	{	1046	{
776	rt_now = mn_now + diff;	1047	rt_now = rtmn_diff + mn_now;
777	return 0;	1048	return 0;
778	}	1049	}
779	else	1050	else
780	{	1051	{
781	now_floor = mn_now;	1052	now_floor = mn_now;
…		…
792	#if EV_USE_MONOTONIC	1063	#if EV_USE_MONOTONIC
793	if (expect_true (have_monotonic))	1064	if (expect_true (have_monotonic))
794	{	1065	{
795	if (time_update_monotonic (EV_A))	1066	if (time_update_monotonic (EV_A))
796	{	1067	{
797	ev_tstamp odiff = diff;	1068	ev_tstamp odiff = rtmn_diff;
798		1069
799	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1070	for (i = 4; --i; ) /* loop a few times, before making important decisions */
800	{	1071	{
801	diff = rt_now - mn_now;	1072	rtmn_diff = rt_now - mn_now;
802		1073
803	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1074	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
804	return; /* all is well */	1075	return; /* all is well */
805		1076
806	rt_now = ev_time ();	1077	rt_now = ev_time ();
807	mn_now = get_clock ();	1078	mn_now = get_clock ();
808	now_floor = mn_now;	1079	now_floor = mn_now;
809	}	1080	}
810		1081
811	periodics_reschedule (EV_A_ diff - odiff);	1082	periodics_reschedule (EV_A);
812	/* no timer adjustment, as the monotonic clock doesn't jump */	1083	/* no timer adjustment, as the monotonic clock doesn't jump */
		1084	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
813	}	1085	}
814	}	1086	}
815	else	1087	else
816	#endif	1088	#endif
817	{	1089	{
818	rt_now = ev_time ();	1090	rt_now = ev_time ();
819		1091
820	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1092	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
821	{	1093	{
822	periodics_reschedule (EV_A_ rt_now - mn_now);	1094	periodics_reschedule (EV_A);
823		1095
824	/* adjust timers. this is easy, as the offset is the same for all */	1096	/* adjust timers. this is easy, as the offset is the same for all */
825	for (i = 0; i < timercnt; ++i)	1097	for (i = 0; i < timercnt; ++i)
826	timers [i]->at += diff;	1098	((WT)timers [i])->at += rt_now - mn_now;
827	}	1099	}
828		1100
829	mn_now = rt_now;	1101	mn_now = rt_now;
830	}	1102	}
831	}	1103	}
…		…
857	{	1129	{
858	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1130	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
859	call_pending (EV_A);	1131	call_pending (EV_A);
860	}	1132	}
861		1133
		1134	/* we might have forked, so reify kernel state if necessary */
		1135	if (expect_false (postfork))
		1136	loop_fork (EV_A);
		1137
862	/* update fd-related kernel structures */	1138	/* update fd-related kernel structures */
863	fd_reify (EV_A);	1139	fd_reify (EV_A);
864		1140
865	/* calculate blocking time */	1141	/* calculate blocking time */
866		1142
…		…
882	{	1158	{
883	block = MAX_BLOCKTIME;	1159	block = MAX_BLOCKTIME;
884		1160
885	if (timercnt)	1161	if (timercnt)
886	{	1162	{
887	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1163	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
888	if (block > to) block = to;	1164	if (block > to) block = to;
889	}	1165	}
890		1166
891	if (periodiccnt)	1167	if (periodiccnt)
892	{	1168	{
893	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1169	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
894	if (block > to) block = to;	1170	if (block > to) block = to;
895	}	1171	}
896		1172
897	if (block < 0.) block = 0.;	1173	if (block < 0.) block = 0.;
898	}	1174	}
…		…
1015	ev_timer_start (EV_P_ struct ev_timer *w)	1291	ev_timer_start (EV_P_ struct ev_timer *w)
1016	{	1292	{
1017	if (ev_is_active (w))	1293	if (ev_is_active (w))
1018	return;	1294	return;
1019		1295
1020	w->at += mn_now;	1296	((WT)w)->at += mn_now;
1021		1297
1022	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1298	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1023		1299
1024	ev_start (EV_A_ (W)w, ++timercnt);	1300	ev_start (EV_A_ (W)w, ++timercnt);
1025	array_needsize (timers, timermax, timercnt, );	1301	array_needsize (timers, timermax, timercnt, (void));
1026	timers [timercnt - 1] = w;	1302	timers [timercnt - 1] = w;
1027	upheap ((WT *)timers, timercnt - 1);	1303	upheap ((WT *)timers, timercnt - 1);
		1304
		1305	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1028	}	1306	}
1029		1307
1030	void	1308	void
1031	ev_timer_stop (EV_P_ struct ev_timer *w)	1309	ev_timer_stop (EV_P_ struct ev_timer *w)
1032	{	1310	{
1033	ev_clear_pending (EV_A_ (W)w);	1311	ev_clear_pending (EV_A_ (W)w);
1034	if (!ev_is_active (w))	1312	if (!ev_is_active (w))
1035	return;	1313	return;
1036		1314
		1315	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1316
1037	if (w->active < timercnt--)	1317	if (((W)w)->active < timercnt--)
1038	{	1318	{
1039	timers [w->active - 1] = timers [timercnt];	1319	timers [((W)w)->active - 1] = timers [timercnt];
1040	downheap ((WT *)timers, timercnt, w->active - 1);	1320	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1041	}	1321	}
1042		1322
1043	w->at = w->repeat;	1323	((WT)w)->at = w->repeat;
1044		1324
1045	ev_stop (EV_A_ (W)w);	1325	ev_stop (EV_A_ (W)w);
1046	}	1326	}
1047		1327
1048	void	1328	void
…		…
1050	{	1330	{
1051	if (ev_is_active (w))	1331	if (ev_is_active (w))
1052	{	1332	{
1053	if (w->repeat)	1333	if (w->repeat)
1054	{	1334	{
1055	w->at = mn_now + w->repeat;	1335	((WT)w)->at = mn_now + w->repeat;
1056	downheap ((WT *)timers, timercnt, w->active - 1);	1336	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1057	}	1337	}
1058	else	1338	else
1059	ev_timer_stop (EV_A_ w);	1339	ev_timer_stop (EV_A_ w);
1060	}	1340	}
1061	else if (w->repeat)	1341	else if (w->repeat)
…		…
1070		1350
1071	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1351	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1072		1352
1073	/* this formula differs from the one in periodic_reify because we do not always round up */	1353	/* this formula differs from the one in periodic_reify because we do not always round up */
1074	if (w->interval)	1354	if (w->interval)
1075	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1355	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
1076		1356
1077	ev_start (EV_A_ (W)w, ++periodiccnt);	1357	ev_start (EV_A_ (W)w, ++periodiccnt);
1078	array_needsize (periodics, periodicmax, periodiccnt, );	1358	array_needsize (periodics, periodicmax, periodiccnt, (void));
1079	periodics [periodiccnt - 1] = w;	1359	periodics [periodiccnt - 1] = w;
1080	upheap ((WT *)periodics, periodiccnt - 1);	1360	upheap ((WT *)periodics, periodiccnt - 1);
		1361
		1362	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1081	}	1363	}
1082		1364
1083	void	1365	void
1084	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1366	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1085	{	1367	{
1086	ev_clear_pending (EV_A_ (W)w);	1368	ev_clear_pending (EV_A_ (W)w);
1087	if (!ev_is_active (w))	1369	if (!ev_is_active (w))
1088	return;	1370	return;
1089		1371
		1372	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1373
1090	if (w->active < periodiccnt--)	1374	if (((W)w)->active < periodiccnt--)
1091	{	1375	{
1092	periodics [w->active - 1] = periodics [periodiccnt];	1376	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1093	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1377	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1094	}	1378	}
1095		1379
		1380	ev_stop (EV_A_ (W)w);
		1381	}
		1382
		1383	void
		1384	ev_idle_start (EV_P_ struct ev_idle *w)
		1385	{
		1386	if (ev_is_active (w))
		1387	return;
		1388
		1389	ev_start (EV_A_ (W)w, ++idlecnt);
		1390	array_needsize (idles, idlemax, idlecnt, (void));
		1391	idles [idlecnt - 1] = w;
		1392	}
		1393
		1394	void
		1395	ev_idle_stop (EV_P_ struct ev_idle *w)
		1396	{
		1397	ev_clear_pending (EV_A_ (W)w);
		1398	if (ev_is_active (w))
		1399	return;
		1400
		1401	idles [((W)w)->active - 1] = idles [--idlecnt];
		1402	ev_stop (EV_A_ (W)w);
		1403	}
		1404
		1405	void
		1406	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1407	{
		1408	if (ev_is_active (w))
		1409	return;
		1410
		1411	ev_start (EV_A_ (W)w, ++preparecnt);
		1412	array_needsize (prepares, preparemax, preparecnt, (void));
		1413	prepares [preparecnt - 1] = w;
		1414	}
		1415
		1416	void
		1417	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1418	{
		1419	ev_clear_pending (EV_A_ (W)w);
		1420	if (ev_is_active (w))
		1421	return;
		1422
		1423	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1424	ev_stop (EV_A_ (W)w);
		1425	}
		1426
		1427	void
		1428	ev_check_start (EV_P_ struct ev_check *w)
		1429	{
		1430	if (ev_is_active (w))
		1431	return;
		1432
		1433	ev_start (EV_A_ (W)w, ++checkcnt);
		1434	array_needsize (checks, checkmax, checkcnt, (void));
		1435	checks [checkcnt - 1] = w;
		1436	}
		1437
		1438	void
		1439	ev_check_stop (EV_P_ struct ev_check *w)
		1440	{
		1441	ev_clear_pending (EV_A_ (W)w);
		1442	if (ev_is_active (w))
		1443	return;
		1444
		1445	checks [((W)w)->active - 1] = checks [--checkcnt];
1096	ev_stop (EV_A_ (W)w);	1446	ev_stop (EV_A_ (W)w);
1097	}	1447	}
1098		1448
1099	#ifndef SA_RESTART	1449	#ifndef SA_RESTART
1100	# define SA_RESTART 0	1450	# define SA_RESTART 0
1101	#endif	1451	#endif
1102		1452
1103	void	1453	void
1104	ev_signal_start (EV_P_ struct ev_signal *w)	1454	ev_signal_start (EV_P_ struct ev_signal *w)
1105	{	1455	{
		1456	#if EV_MULTIPLICITY
		1457	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1458	#endif
1106	if (ev_is_active (w))	1459	if (ev_is_active (w))
1107	return;	1460	return;
1108		1461
1109	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1462	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1110		1463
1111	ev_start (EV_A_ (W)w, 1);	1464	ev_start (EV_A_ (W)w, 1);
1112	array_needsize (signals, signalmax, w->signum, signals_init);	1465	array_needsize (signals, signalmax, w->signum, signals_init);
1113	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1466	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1114		1467
1115	if (!w->next)	1468	if (!((WL)w)->next)
1116	{	1469	{
		1470	#if WIN32
		1471	signal (w->signum, sighandler);
		1472	#else
1117	struct sigaction sa;	1473	struct sigaction sa;
1118	sa.sa_handler = sighandler;	1474	sa.sa_handler = sighandler;
1119	sigfillset (&sa.sa_mask);	1475	sigfillset (&sa.sa_mask);
1120	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1476	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1121	sigaction (w->signum, &sa, 0);	1477	sigaction (w->signum, &sa, 0);
		1478	#endif
1122	}	1479	}
1123	}	1480	}
1124		1481
1125	void	1482	void
1126	ev_signal_stop (EV_P_ struct ev_signal *w)	1483	ev_signal_stop (EV_P_ struct ev_signal *w)
…		…
1135	if (!signals [w->signum - 1].head)	1492	if (!signals [w->signum - 1].head)
1136	signal (w->signum, SIG_DFL);	1493	signal (w->signum, SIG_DFL);
1137	}	1494	}
1138		1495
1139	void	1496	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)	1497	ev_child_start (EV_P_ struct ev_child *w)
1207	{	1498	{
		1499	#if EV_MULTIPLICITY
		1500	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1501	#endif
1208	if (ev_is_active (w))	1502	if (ev_is_active (w))
1209	return;	1503	return;
1210		1504
1211	ev_start (EV_A_ (W)w, 1);	1505	ev_start (EV_A_ (W)w, 1);
1212	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1506	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
…		…
1239	void (cb)(int revents, void arg) = once->cb;	1533	void (cb)(int revents, void arg) = once->cb;
1240	void *arg = once->arg;	1534	void *arg = once->arg;
1241		1535
1242	ev_io_stop (EV_A_ &once->io);	1536	ev_io_stop (EV_A_ &once->io);
1243	ev_timer_stop (EV_A_ &once->to);	1537	ev_timer_stop (EV_A_ &once->to);
1244	free (once);	1538	ev_free (once);
1245		1539
1246	cb (revents, arg);	1540	cb (revents, arg);
1247	}	1541	}
1248		1542
1249	static void	1543	static void
…		…
1259	}	1553	}
1260		1554
1261	void	1555	void
1262	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1556	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1263	{	1557	{
1264	struct ev_once *once = malloc (sizeof (struct ev_once));	1558	struct ev_once *once = ev_malloc (sizeof (struct ev_once));
1265		1559
1266	if (!once)	1560	if (!once)
1267	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1561	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1268	else	1562	else
1269	{	1563	{
…		…
1284	ev_timer_start (EV_A_ &once->to);	1578	ev_timer_start (EV_A_ &once->to);
1285	}	1579	}
1286	}	1580	}
1287	}	1581	}
1288		1582
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 1.72 by root, Tue Nov 6 16:09:37 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 1.72 by root, Tue Nov 6 16:09:37 2007 UTC