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

Comparing libev/ev.c (file contents):
Revision 1.64 by root, Sun Nov 4 23:14:11 2007 UTC vs.
Revision 1.103 by root, Mon Nov 12 00:31:08 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
32	# include "config.h"	37	# include "config.h"
33		38
34	# if HAVE_CLOCK_GETTIME	39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	44	# define EV_USE_REALTIME 1
		45	# endif
37	# endif	46	# endif
38		47
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
40	# define EV_USE_SELECT 1	49	# define EV_USE_SELECT 1
41	# endif	50	# endif
42		51
43	# if HAVE_POLL && HAVE_POLL_H	52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
44	# define EV_USE_POLL 1	53	# define EV_USE_POLL 1
45	# endif	54	# endif
46		55
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	56	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
48	# define EV_USE_EPOLL 1	57	# define EV_USE_EPOLL 1
49	# endif	58	# endif
50		59
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
52	# define EV_USE_KQUEUE 1	61	# define EV_USE_KQUEUE 1
53	# endif	62	# endif
54		63
55	#endif	64	#endif
56		65
57	#include <math.h>	66	#include <math.h>
58	#include <stdlib.h>	67	#include <stdlib.h>
59	#include <unistd.h>
60	#include <fcntl.h>	68	#include <fcntl.h>
61	#include <signal.h>
62	#include <stddef.h>	69	#include <stddef.h>
63		70
64	#include <stdio.h>	71	#include <stdio.h>
65		72
66	#include <assert.h>	73	#include <assert.h>
67	#include <errno.h>	74	#include <errno.h>
68	#include <sys/types.h>	75	#include <sys/types.h>
		76	#include <time.h>
		77
		78	#include <signal.h>
		79
69	#ifndef WIN32	80	#ifndef _WIN32
		81	# include <unistd.h>
		82	# include <sys/time.h>
70	# include <sys/wait.h>	83	# include <sys/wait.h>
		84	#else
		85	# define WIN32_LEAN_AND_MEAN
		86	# include <windows.h>
		87	# ifndef EV_SELECT_IS_WINSOCKET
		88	# define EV_SELECT_IS_WINSOCKET 1
71	#endif	89	# endif
72	#include <sys/time.h>	90	#endif
73	#include <time.h>
74		91
75	/**/	92	/**/
76		93
77	#ifndef EV_USE_MONOTONIC	94	#ifndef EV_USE_MONOTONIC
78	# define EV_USE_MONOTONIC 1	95	# define EV_USE_MONOTONIC 1
…		…
90	# define EV_USE_EPOLL 0	107	# define EV_USE_EPOLL 0
91	#endif	108	#endif
92		109
93	#ifndef EV_USE_KQUEUE	110	#ifndef EV_USE_KQUEUE
94	# define EV_USE_KQUEUE 0	111	# define EV_USE_KQUEUE 0
95	#endif
96
97	#ifndef EV_USE_WIN32
98	# ifdef WIN32
99	# define EV_USE_WIN32 1
100	# else
101	# define EV_USE_WIN32 0
102	# endif
103	#endif	112	#endif
104		113
105	#ifndef EV_USE_REALTIME	114	#ifndef EV_USE_REALTIME
106	# define EV_USE_REALTIME 1	115	# define EV_USE_REALTIME 1
107	#endif	116	#endif
…		…
114	#endif	123	#endif
115		124
116	#ifndef CLOCK_REALTIME	125	#ifndef CLOCK_REALTIME
117	# undef EV_USE_REALTIME	126	# undef EV_USE_REALTIME
118	# define EV_USE_REALTIME 0	127	# define EV_USE_REALTIME 0
		128	#endif
		129
		130	#if EV_SELECT_IS_WINSOCKET
		131	# include <winsock.h>
119	#endif	132	#endif
120		133
121	/**/	134	/**/
122		135
123	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	136	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
124	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	137	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
125	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	138	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
126	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	139	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
127		140
		141	#ifdef EV_H
		142	# include EV_H
		143	#else
128	#include "ev.h"	144	# include "ev.h"
		145	#endif
129		146
130	#if __GNUC__ >= 3	147	#if __GNUC__ >= 3
131	# define expect(expr,value) __builtin_expect ((expr),(value))	148	# define expect(expr,value) __builtin_expect ((expr),(value))
132	# define inline inline	149	# define inline inline
133	#else	150	#else
…		…
139	#define expect_true(expr) expect ((expr) != 0, 1)	156	#define expect_true(expr) expect ((expr) != 0, 1)
140		157
141	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	158	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	159	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
143		160
		161	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		162
144	typedef struct ev_watcher *W;	163	typedef struct ev_watcher *W;
145	typedef struct ev_watcher_list *WL;	164	typedef struct ev_watcher_list *WL;
146	typedef struct ev_watcher_time *WT;	165	typedef struct ev_watcher_time *WT;
147		166
148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	167	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149		168
		169	#ifdef _WIN32
		170	# include "ev_win32.c"
		171	#endif
		172
150	/*****************************************************************************/	173	/*****************************************************************************/
151		174
		175	static void (syserr_cb)(const char msg);
		176
		177	void ev_set_syserr_cb (void (cb)(const char msg))
		178	{
		179	syserr_cb = cb;
		180	}
		181
		182	static void
		183	syserr (const char *msg)
		184	{
		185	if (!msg)
		186	msg = "(libev) system error";
		187
		188	if (syserr_cb)
		189	syserr_cb (msg);
		190	else
		191	{
		192	perror (msg);
		193	abort ();
		194	}
		195	}
		196
		197	static void (alloc)(void *ptr, long size);
		198
		199	void ev_set_allocator (void (cb)(void *ptr, long size))
		200	{
		201	alloc = cb;
		202	}
		203
		204	static void *
		205	ev_realloc (void *ptr, long size)
		206	{
		207	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		208
		209	if (!ptr && size)
		210	{
		211	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		212	abort ();
		213	}
		214
		215	return ptr;
		216	}
		217
		218	#define ev_malloc(size) ev_realloc (0, (size))
		219	#define ev_free(ptr) ev_realloc ((ptr), 0)
		220
		221	/*****************************************************************************/
		222
152	typedef struct	223	typedef struct
153	{	224	{
154	struct ev_watcher_list *head;	225	WL head;
155	unsigned char events;	226	unsigned char events;
156	unsigned char reify;	227	unsigned char reify;
		228	#if EV_SELECT_IS_WINSOCKET
		229	SOCKET handle;
		230	#endif
157	} ANFD;	231	} ANFD;
158		232
159	typedef struct	233	typedef struct
160	{	234	{
161	W w;	235	W w;
162	int events;	236	int events;
163	} ANPENDING;	237	} ANPENDING;
164		238
165	#if EV_MULTIPLICITY	239	#if EV_MULTIPLICITY
166		240
167	struct ev_loop	241	struct ev_loop
168	{	242	{
		243	ev_tstamp ev_rt_now;
		244	#define ev_rt_now ((loop)->ev_rt_now)
169	# define VAR(name,decl) decl;	245	#define VAR(name,decl) decl;
170	# include "ev_vars.h"	246	#include "ev_vars.h"
171	};
172	# undef VAR	247	#undef VAR
		248	};
173	# include "ev_wrap.h"	249	#include "ev_wrap.h"
		250
		251	struct ev_loop default_loop_struct;
		252	static struct ev_loop *default_loop;
174		253
175	#else	254	#else
176		255
		256	ev_tstamp ev_rt_now;
177	# define VAR(name,decl) static decl;	257	#define VAR(name,decl) static decl;
178	# include "ev_vars.h"	258	#include "ev_vars.h"
179	# undef VAR	259	#undef VAR
		260
		261	static int default_loop;
180		262
181	#endif	263	#endif
182		264
183	/*****************************************************************************/	265	/*****************************************************************************/
184		266
185	inline ev_tstamp	267	ev_tstamp
186	ev_time (void)	268	ev_time (void)
187	{	269	{
188	#if EV_USE_REALTIME	270	#if EV_USE_REALTIME
189	struct timespec ts;	271	struct timespec ts;
190	clock_gettime (CLOCK_REALTIME, &ts);	272	clock_gettime (CLOCK_REALTIME, &ts);
…		…
209	#endif	291	#endif
210		292
211	return ev_time ();	293	return ev_time ();
212	}	294	}
213		295
		296	#if EV_MULTIPLICITY
214	ev_tstamp	297	ev_tstamp
215	ev_now (EV_P)	298	ev_now (EV_P)
216	{	299	{
217	return rt_now;	300	return ev_rt_now;
218	}	301	}
		302	#endif
219		303
220	#define array_roundsize(base,n) ((n) \| 4 & ~3)	304	#define array_roundsize(type,n) ((n) \| 4 & ~3)
221		305
222	#define array_needsize(base,cur,cnt,init) \	306	#define array_needsize(type,base,cur,cnt,init) \
223	if (expect_false ((cnt) > cur)) \	307	if (expect_false ((cnt) > cur)) \
224	{ \	308	{ \
225	int newcnt = cur; \	309	int newcnt = cur; \
226	do \	310	do \
227	{ \	311	{ \
228	newcnt = array_roundsize (base, newcnt << 1); \	312	newcnt = array_roundsize (type, newcnt << 1); \
229	} \	313	} \
230	while ((cnt) > newcnt); \	314	while ((cnt) > newcnt); \
231	\	315	\
232	base = realloc (base, sizeof (base) (newcnt)); \	316	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
233	init (base + cur, newcnt - cur); \	317	init (base + cur, newcnt - cur); \
234	cur = newcnt; \	318	cur = newcnt; \
235	}	319	}
		320
		321	#define array_slim(type,stem) \
		322	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		323	{ \
		324	stem ## max = array_roundsize (stem ## cnt >> 1); \
		325	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		326	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		327	}
		328
		329	#define array_free(stem, idx) \
		330	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
236		331
237	/*****************************************************************************/	332	/*****************************************************************************/
238		333
239	static void	334	static void
240	anfds_init (ANFD *base, int count)	335	anfds_init (ANFD *base, int count)
…		…
247		342
248	++base;	343	++base;
249	}	344	}
250	}	345	}
251		346
252	static void	347	void
253	event (EV_P_ W w, int events)	348	ev_feed_event (EV_P_ void *w, int revents)
254	{	349	{
		350	W w_ = (W)w;
		351
255	if (w->pending)	352	if (w_->pending)
256	{	353	{
257	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	354	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
258	return;	355	return;
259	}	356	}
260		357
261	w->pending = ++pendingcnt [ABSPRI (w)];	358	w_->pending = ++pendingcnt [ABSPRI (w_)];
262	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	359	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
263	pendings [ABSPRI (w)][w->pending - 1].w = w;	360	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
264	pendings [ABSPRI (w)][w->pending - 1].events = events;	361	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
265	}	362	}
266		363
267	static void	364	static void
268	queue_events (EV_P_ W *events, int eventcnt, int type)	365	queue_events (EV_P_ W *events, int eventcnt, int type)
269	{	366	{
270	int i;	367	int i;
271		368
272	for (i = 0; i < eventcnt; ++i)	369	for (i = 0; i < eventcnt; ++i)
273	event (EV_A_ events [i], type);	370	ev_feed_event (EV_A_ events [i], type);
274	}	371	}
275		372
276	static void	373	inline void
277	fd_event (EV_P_ int fd, int events)	374	fd_event (EV_P_ int fd, int revents)
278	{	375	{
279	ANFD *anfd = anfds + fd;	376	ANFD *anfd = anfds + fd;
280	struct ev_io *w;	377	struct ev_io *w;
281		378
282	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	379	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
283	{	380	{
284	int ev = w->events & events;	381	int ev = w->events & revents;
285		382
286	if (ev)	383	if (ev)
287	event (EV_A_ (W)w, ev);	384	ev_feed_event (EV_A_ (W)w, ev);
288	}	385	}
		386	}
		387
		388	void
		389	ev_feed_fd_event (EV_P_ int fd, int revents)
		390	{
		391	fd_event (EV_A_ fd, revents);
289	}	392	}
290		393
291	/*****************************************************************************/	394	/*****************************************************************************/
292		395
293	static void	396	static void
…		…
304	int events = 0;	407	int events = 0;
305		408
306	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	409	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
307	events \|= w->events;	410	events \|= w->events;
308		411
		412	#if EV_SELECT_IS_WINSOCKET
		413	if (events)
		414	{
		415	unsigned long argp;
		416	anfd->handle = _get_osfhandle (fd);
		417	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		418	}
		419	#endif
		420
309	anfd->reify = 0;	421	anfd->reify = 0;
310		422
311	method_modify (EV_A_ fd, anfd->events, events);	423	method_modify (EV_A_ fd, anfd->events, events);
312	anfd->events = events;	424	anfd->events = events;
313	}	425	}
…		…
316	}	428	}
317		429
318	static void	430	static void
319	fd_change (EV_P_ int fd)	431	fd_change (EV_P_ int fd)
320	{	432	{
321	if (anfds [fd].reify \|\| fdchangecnt < 0)	433	if (anfds [fd].reify)
322	return;	434	return;
323		435
324	anfds [fd].reify = 1;	436	anfds [fd].reify = 1;
325		437
326	++fdchangecnt;	438	++fdchangecnt;
327	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	439	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
328	fdchanges [fdchangecnt - 1] = fd;	440	fdchanges [fdchangecnt - 1] = fd;
329	}	441	}
330		442
331	static void	443	static void
332	fd_kill (EV_P_ int fd)	444	fd_kill (EV_P_ int fd)
…		…
334	struct ev_io *w;	446	struct ev_io *w;
335		447
336	while ((w = (struct ev_io *)anfds [fd].head))	448	while ((w = (struct ev_io *)anfds [fd].head))
337	{	449	{
338	ev_io_stop (EV_A_ w);	450	ev_io_stop (EV_A_ w);
339	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	451	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
340	}	452	}
		453	}
		454
		455	static int
		456	fd_valid (int fd)
		457	{
		458	#ifdef _WIN32
		459	return _get_osfhandle (fd) != -1;
		460	#else
		461	return fcntl (fd, F_GETFD) != -1;
		462	#endif
341	}	463	}
342		464
343	/* called on EBADF to verify fds */	465	/* called on EBADF to verify fds */
344	static void	466	static void
345	fd_ebadf (EV_P)	467	fd_ebadf (EV_P)
346	{	468	{
347	int fd;	469	int fd;
348		470
349	for (fd = 0; fd < anfdmax; ++fd)	471	for (fd = 0; fd < anfdmax; ++fd)
350	if (anfds [fd].events)	472	if (anfds [fd].events)
351	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	473	if (!fd_valid (fd) == -1 && errno == EBADF)
352	fd_kill (EV_A_ fd);	474	fd_kill (EV_A_ fd);
353	}	475	}
354		476
355	/* called on ENOMEM in select/poll to kill some fds and retry */	477	/* called on ENOMEM in select/poll to kill some fds and retry */
356	static void	478	static void
…		…
359	int fd;	481	int fd;
360		482
361	for (fd = anfdmax; fd--; )	483	for (fd = anfdmax; fd--; )
362	if (anfds [fd].events)	484	if (anfds [fd].events)
363	{	485	{
364	close (fd);
365	fd_kill (EV_A_ fd);	486	fd_kill (EV_A_ fd);
366	return;	487	return;
367	}	488	}
368	}	489	}
369		490
370	/* susually called after fork if method needs to re-arm all fds from scratch */	491	/* usually called after fork if method needs to re-arm all fds from scratch */
371	static void	492	static void
372	fd_rearm_all (EV_P)	493	fd_rearm_all (EV_P)
373	{	494	{
374	int fd;	495	int fd;
375		496
…		…
423		544
424	heap [k] = w;	545	heap [k] = w;
425	((W)heap [k])->active = k + 1;	546	((W)heap [k])->active = k + 1;
426	}	547	}
427		548
		549	inline void
		550	adjustheap (WT *heap, int N, int k)
		551	{
		552	upheap (heap, k);
		553	downheap (heap, N, k);
		554	}
		555
428	/*****************************************************************************/	556	/*****************************************************************************/
429		557
430	typedef struct	558	typedef struct
431	{	559	{
432	struct ev_watcher_list *head;	560	WL head;
433	sig_atomic_t volatile gotsig;	561	sig_atomic_t volatile gotsig;
434	} ANSIG;	562	} ANSIG;
435		563
436	static ANSIG *signals;	564	static ANSIG *signals;
437	static int signalmax;	565	static int signalmax;
…		…
453	}	581	}
454		582
455	static void	583	static void
456	sighandler (int signum)	584	sighandler (int signum)
457	{	585	{
		586	#if _WIN32
		587	signal (signum, sighandler);
		588	#endif
		589
458	signals [signum - 1].gotsig = 1;	590	signals [signum - 1].gotsig = 1;
459		591
460	if (!gotsig)	592	if (!gotsig)
461	{	593	{
462	int old_errno = errno;	594	int old_errno = errno;
…		…
464	write (sigpipe [1], &signum, 1);	596	write (sigpipe [1], &signum, 1);
465	errno = old_errno;	597	errno = old_errno;
466	}	598	}
467	}	599	}
468		600
		601	void
		602	ev_feed_signal_event (EV_P_ int signum)
		603	{
		604	WL w;
		605
		606	#if EV_MULTIPLICITY
		607	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		608	#endif
		609
		610	--signum;
		611
		612	if (signum < 0 \|\| signum >= signalmax)
		613	return;
		614
		615	signals [signum].gotsig = 0;
		616
		617	for (w = signals [signum].head; w; w = w->next)
		618	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		619	}
		620
469	static void	621	static void
470	sigcb (EV_P_ struct ev_io *iow, int revents)	622	sigcb (EV_P_ struct ev_io *iow, int revents)
471	{	623	{
472	struct ev_watcher_list *w;
473	int signum;	624	int signum;
474		625
475	read (sigpipe [0], &revents, 1);	626	read (sigpipe [0], &revents, 1);
476	gotsig = 0;	627	gotsig = 0;
477		628
478	for (signum = signalmax; signum--; )	629	for (signum = signalmax; signum--; )
479	if (signals [signum].gotsig)	630	if (signals [signum].gotsig)
480	{	631	ev_feed_signal_event (EV_A_ signum + 1);
481	signals [signum].gotsig = 0;	632	}
482		633
483	for (w = signals [signum].head; w; w = w->next)	634	inline void
484	event (EV_A_ (W)w, EV_SIGNAL);	635	fd_intern (int fd)
485	}	636	{
		637	#ifdef _WIN32
		638	int arg = 1;
		639	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		640	#else
		641	fcntl (fd, F_SETFD, FD_CLOEXEC);
		642	fcntl (fd, F_SETFL, O_NONBLOCK);
		643	#endif
486	}	644	}
487		645
488	static void	646	static void
489	siginit (EV_P)	647	siginit (EV_P)
490	{	648	{
491	#ifndef WIN32	649	fd_intern (sigpipe [0]);
492	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	650	fd_intern (sigpipe [1]);
493	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
494
495	/* rather than sort out wether we really need nb, set it */
496	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
497	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
498	#endif
499		651
500	ev_io_set (&sigev, sigpipe [0], EV_READ);	652	ev_io_set (&sigev, sigpipe [0], EV_READ);
501	ev_io_start (EV_A_ &sigev);	653	ev_io_start (EV_A_ &sigev);
502	ev_unref (EV_A); /* child watcher should not keep loop alive */	654	ev_unref (EV_A); /* child watcher should not keep loop alive */
503	}	655	}
504		656
505	/*****************************************************************************/	657	/*****************************************************************************/
506		658
507	#ifndef WIN32
508
509	static struct ev_child *childs [PID_HASHSIZE];	659	static struct ev_child *childs [PID_HASHSIZE];
		660
		661	#ifndef _WIN32
		662
510	static struct ev_signal childev;	663	static struct ev_signal childev;
511		664
512	#ifndef WCONTINUED	665	#ifndef WCONTINUED
513	# define WCONTINUED 0	666	# define WCONTINUED 0
514	#endif	667	#endif
…		…
522	if (w->pid == pid \|\| !w->pid)	675	if (w->pid == pid \|\| !w->pid)
523	{	676	{
524	ev_priority (w) = ev_priority (sw); /* need to do it now */	677	ev_priority (w) = ev_priority (sw); /* need to do it now */
525	w->rpid = pid;	678	w->rpid = pid;
526	w->rstatus = status;	679	w->rstatus = status;
527	event (EV_A_ (W)w, EV_CHILD);	680	ev_feed_event (EV_A_ (W)w, EV_CHILD);
528	}	681	}
529	}	682	}
530		683
531	static void	684	static void
532	childcb (EV_P_ struct ev_signal *sw, int revents)	685	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
534	int pid, status;	687	int pid, status;
535		688
536	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	689	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
537	{	690	{
538	/* make sure we are called again until all childs have been reaped */	691	/* make sure we are called again until all childs have been reaped */
539	event (EV_A_ (W)sw, EV_SIGNAL);	692	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
540		693
541	child_reap (EV_A_ sw, pid, pid, status);	694	child_reap (EV_A_ sw, pid, pid, status);
542	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	695	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
543	}	696	}
544	}	697	}
…		…
574		727
575	/* return true if we are running with elevated privileges and should ignore env variables */	728	/* return true if we are running with elevated privileges and should ignore env variables */
576	static int	729	static int
577	enable_secure (void)	730	enable_secure (void)
578	{	731	{
579	#ifdef WIN32	732	#ifdef _WIN32
580	return 0;	733	return 0;
581	#else	734	#else
582	return getuid () != geteuid ()	735	return getuid () != geteuid ()
583	\|\| getgid () != getegid ();	736	\|\| getgid () != getegid ();
584	#endif	737	#endif
…		…
601	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	754	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
602	have_monotonic = 1;	755	have_monotonic = 1;
603	}	756	}
604	#endif	757	#endif
605		758
606	rt_now = ev_time ();	759	ev_rt_now = ev_time ();
607	mn_now = get_clock ();	760	mn_now = get_clock ();
608	now_floor = mn_now;	761	now_floor = mn_now;
609	rtmn_diff = rt_now - mn_now;	762	rtmn_diff = ev_rt_now - mn_now;
610		763
611	if (methods == EVMETHOD_AUTO)	764	if (methods == EVMETHOD_AUTO)
612	if (!enable_secure () && getenv ("LIBEV_METHODS"))	765	if (!enable_secure () && getenv ("LIBEV_METHODS"))
613	methods = atoi (getenv ("LIBEV_METHODS"));	766	methods = atoi (getenv ("LIBEV_METHODS"));
614	else	767	else
615	methods = EVMETHOD_ANY;	768	methods = EVMETHOD_ANY;
616		769
617	method = 0;	770	method = 0;
618	#if EV_USE_WIN32
619	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
620	#endif
621	#if EV_USE_KQUEUE	771	#if EV_USE_KQUEUE
622	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	772	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
623	#endif	773	#endif
624	#if EV_USE_EPOLL	774	#if EV_USE_EPOLL
625	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	775	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
…		…
628	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	778	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
629	#endif	779	#endif
630	#if EV_USE_SELECT	780	#if EV_USE_SELECT
631	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	781	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
632	#endif	782	#endif
		783
		784	ev_init (&sigev, sigcb);
		785	ev_set_priority (&sigev, EV_MAXPRI);
633	}	786	}
634	}	787	}
635		788
636	void	789	void
637	loop_destroy (EV_P)	790	loop_destroy (EV_P)
638	{	791	{
639	#if EV_USE_WIN32	792	int i;
640	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	793
641	#endif
642	#if EV_USE_KQUEUE	794	#if EV_USE_KQUEUE
643	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	795	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
644	#endif	796	#endif
645	#if EV_USE_EPOLL	797	#if EV_USE_EPOLL
646	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	798	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
…		…
650	#endif	802	#endif
651	#if EV_USE_SELECT	803	#if EV_USE_SELECT
652	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	804	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
653	#endif	805	#endif
654		806
		807	for (i = NUMPRI; i--; )
		808	array_free (pending, [i]);
		809
		810	/* have to use the microsoft-never-gets-it-right macro */
		811	array_free (fdchange, EMPTY);
		812	array_free (timer, EMPTY);
		813	#if EV_PERIODICS
		814	array_free (periodic, EMPTY);
		815	#endif
		816	array_free (idle, EMPTY);
		817	array_free (prepare, EMPTY);
		818	array_free (check, EMPTY);
		819
655	method = 0;	820	method = 0;
656	/TODO/
657	}	821	}
658		822
659	void	823	static void
660	loop_fork (EV_P)	824	loop_fork (EV_P)
661	{	825	{
662	/TODO/
663	#if EV_USE_EPOLL	826	#if EV_USE_EPOLL
664	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	827	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
665	#endif	828	#endif
666	#if EV_USE_KQUEUE	829	#if EV_USE_KQUEUE
667	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	830	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
668	#endif	831	#endif
		832
		833	if (ev_is_active (&sigev))
		834	{
		835	/* default loop */
		836
		837	ev_ref (EV_A);
		838	ev_io_stop (EV_A_ &sigev);
		839	close (sigpipe [0]);
		840	close (sigpipe [1]);
		841
		842	while (pipe (sigpipe))
		843	syserr ("(libev) error creating pipe");
		844
		845	siginit (EV_A);
		846	}
		847
		848	postfork = 0;
669	}	849	}
670		850
671	#if EV_MULTIPLICITY	851	#if EV_MULTIPLICITY
672	struct ev_loop *	852	struct ev_loop *
673	ev_loop_new (int methods)	853	ev_loop_new (int methods)
674	{	854	{
675	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));	855	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		856
		857	memset (loop, 0, sizeof (struct ev_loop));
676		858
677	loop_init (EV_A_ methods);	859	loop_init (EV_A_ methods);
678		860
679	if (ev_method (EV_A))	861	if (ev_method (EV_A))
680	return loop;	862	return loop;
…		…
684		866
685	void	867	void
686	ev_loop_destroy (EV_P)	868	ev_loop_destroy (EV_P)
687	{	869	{
688	loop_destroy (EV_A);	870	loop_destroy (EV_A);
689	free (loop);	871	ev_free (loop);
690	}	872	}
691		873
692	void	874	void
693	ev_loop_fork (EV_P)	875	ev_loop_fork (EV_P)
694	{	876	{
695	loop_fork (EV_A);	877	postfork = 1;
696	}	878	}
697		879
698	#endif	880	#endif
699		881
700	#if EV_MULTIPLICITY	882	#if EV_MULTIPLICITY
701	struct ev_loop default_loop_struct;
702	static struct ev_loop *default_loop;
703
704	struct ev_loop *	883	struct ev_loop *
705	#else	884	#else
706	static int default_loop;
707
708	int	885	int
709	#endif	886	#endif
710	ev_default_loop (int methods)	887	ev_default_loop (int methods)
711	{	888	{
712	if (sigpipe [0] == sigpipe [1])	889	if (sigpipe [0] == sigpipe [1])
…		…
723		900
724	loop_init (EV_A_ methods);	901	loop_init (EV_A_ methods);
725		902
726	if (ev_method (EV_A))	903	if (ev_method (EV_A))
727	{	904	{
728	ev_watcher_init (&sigev, sigcb);
729	ev_set_priority (&sigev, EV_MAXPRI);
730	siginit (EV_A);	905	siginit (EV_A);
731		906
732	#ifndef WIN32	907	#ifndef _WIN32
733	ev_signal_init (&childev, childcb, SIGCHLD);	908	ev_signal_init (&childev, childcb, SIGCHLD);
734	ev_set_priority (&childev, EV_MAXPRI);	909	ev_set_priority (&childev, EV_MAXPRI);
735	ev_signal_start (EV_A_ &childev);	910	ev_signal_start (EV_A_ &childev);
736	ev_unref (EV_A); /* child watcher should not keep loop alive */	911	ev_unref (EV_A); /* child watcher should not keep loop alive */
737	#endif	912	#endif
…		…
748	{	923	{
749	#if EV_MULTIPLICITY	924	#if EV_MULTIPLICITY
750	struct ev_loop *loop = default_loop;	925	struct ev_loop *loop = default_loop;
751	#endif	926	#endif
752		927
		928	#ifndef _WIN32
753	ev_ref (EV_A); /* child watcher */	929	ev_ref (EV_A); /* child watcher */
754	ev_signal_stop (EV_A_ &childev);	930	ev_signal_stop (EV_A_ &childev);
		931	#endif
755		932
756	ev_ref (EV_A); /* signal watcher */	933	ev_ref (EV_A); /* signal watcher */
757	ev_io_stop (EV_A_ &sigev);	934	ev_io_stop (EV_A_ &sigev);
758		935
759	close (sigpipe [0]); sigpipe [0] = 0;	936	close (sigpipe [0]); sigpipe [0] = 0;
…		…
767	{	944	{
768	#if EV_MULTIPLICITY	945	#if EV_MULTIPLICITY
769	struct ev_loop *loop = default_loop;	946	struct ev_loop *loop = default_loop;
770	#endif	947	#endif
771		948
772	loop_fork (EV_A);	949	if (method)
773		950	postfork = 1;
774	ev_io_stop (EV_A_ &sigev);
775	close (sigpipe [0]);
776	close (sigpipe [1]);
777	pipe (sigpipe);
778
779	ev_ref (EV_A); /* signal watcher */
780	siginit (EV_A);
781	}	951	}
782		952
783	/*****************************************************************************/	953	/*****************************************************************************/
		954
		955	static int
		956	any_pending (EV_P)
		957	{
		958	int pri;
		959
		960	for (pri = NUMPRI; pri--; )
		961	if (pendingcnt [pri])
		962	return 1;
		963
		964	return 0;
		965	}
784		966
785	static void	967	static void
786	call_pending (EV_P)	968	call_pending (EV_P)
787	{	969	{
788	int pri;	970	int pri;
…		…
793	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	975	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
794		976
795	if (p->w)	977	if (p->w)
796	{	978	{
797	p->w->pending = 0;	979	p->w->pending = 0;
798		980	EV_CB_INVOKE (p->w, p->events);
799	((void (*)(EV_P_ W, int))&p->w->cb) (EV_A_ p->w, p->events);
800	}	981	}
801	}	982	}
802	}	983	}
803		984
804	static void	985	static void
…		…
812		993
813	/* first reschedule or stop timer */	994	/* first reschedule or stop timer */
814	if (w->repeat)	995	if (w->repeat)
815	{	996	{
816	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	997	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		998
817	((WT)w)->at = mn_now + w->repeat;	999	((WT)w)->at += w->repeat;
		1000	if (((WT)w)->at < mn_now)
		1001	((WT)w)->at = mn_now;
		1002
818	downheap ((WT *)timers, timercnt, 0);	1003	downheap ((WT *)timers, timercnt, 0);
819	}	1004	}
820	else	1005	else
821	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1006	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
822		1007
823	event (EV_A_ (W)w, EV_TIMEOUT);	1008	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
824	}	1009	}
825	}	1010	}
826		1011
		1012	#if EV_PERIODICS
827	static void	1013	static void
828	periodics_reify (EV_P)	1014	periodics_reify (EV_P)
829	{	1015	{
830	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1016	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
831	{	1017	{
832	struct ev_periodic *w = periodics [0];	1018	struct ev_periodic *w = periodics [0];
833		1019
834	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1020	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
835		1021
836	/* first reschedule or stop timer */	1022	/* first reschedule or stop timer */
837	if (w->interval)	1023	if (w->reschedule_cb)
838	{	1024	{
		1025	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1026
		1027	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1028	downheap ((WT *)periodics, periodiccnt, 0);
		1029	}
		1030	else if (w->interval)
		1031	{
839	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1032	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
840	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1033	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
841	downheap ((WT *)periodics, periodiccnt, 0);	1034	downheap ((WT *)periodics, periodiccnt, 0);
842	}	1035	}
843	else	1036	else
844	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1037	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
845		1038
846	event (EV_A_ (W)w, EV_PERIODIC);	1039	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
847	}	1040	}
848	}	1041	}
849		1042
850	static void	1043	static void
851	periodics_reschedule (EV_P)	1044	periodics_reschedule (EV_P)
…		…
855	/* adjust periodics after time jump */	1048	/* adjust periodics after time jump */
856	for (i = 0; i < periodiccnt; ++i)	1049	for (i = 0; i < periodiccnt; ++i)
857	{	1050	{
858	struct ev_periodic *w = periodics [i];	1051	struct ev_periodic *w = periodics [i];
859		1052
		1053	if (w->reschedule_cb)
		1054	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
860	if (w->interval)	1055	else if (w->interval)
861	{
862	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1056	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
863
864	if (fabs (diff) >= 1e-4)
865	{
866	ev_periodic_stop (EV_A_ w);
867	ev_periodic_start (EV_A_ w);
868
869	i = 0; /* restart loop, inefficient, but time jumps should be rare */
870	}
871	}
872	}	1057	}
		1058
		1059	/* now rebuild the heap */
		1060	for (i = periodiccnt >> 1; i--; )
		1061	downheap ((WT *)periodics, periodiccnt, i);
873	}	1062	}
		1063	#endif
874		1064
875	inline int	1065	inline int
876	time_update_monotonic (EV_P)	1066	time_update_monotonic (EV_P)
877	{	1067	{
878	mn_now = get_clock ();	1068	mn_now = get_clock ();
879		1069
880	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1070	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
881	{	1071	{
882	rt_now = rtmn_diff + mn_now;	1072	ev_rt_now = rtmn_diff + mn_now;
883	return 0;	1073	return 0;
884	}	1074	}
885	else	1075	else
886	{	1076	{
887	now_floor = mn_now;	1077	now_floor = mn_now;
888	rt_now = ev_time ();	1078	ev_rt_now = ev_time ();
889	return 1;	1079	return 1;
890	}	1080	}
891	}	1081	}
892		1082
893	static void	1083	static void
…		…
902	{	1092	{
903	ev_tstamp odiff = rtmn_diff;	1093	ev_tstamp odiff = rtmn_diff;
904		1094
905	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1095	for (i = 4; --i; ) /* loop a few times, before making important decisions */
906	{	1096	{
907	rtmn_diff = rt_now - mn_now;	1097	rtmn_diff = ev_rt_now - mn_now;
908		1098
909	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1099	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
910	return; /* all is well */	1100	return; /* all is well */
911		1101
912	rt_now = ev_time ();	1102	ev_rt_now = ev_time ();
913	mn_now = get_clock ();	1103	mn_now = get_clock ();
914	now_floor = mn_now;	1104	now_floor = mn_now;
915	}	1105	}
916		1106
		1107	# if EV_PERIODICS
917	periodics_reschedule (EV_A);	1108	periodics_reschedule (EV_A);
		1109	# endif
918	/* no timer adjustment, as the monotonic clock doesn't jump */	1110	/* no timer adjustment, as the monotonic clock doesn't jump */
919	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1111	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
920	}	1112	}
921	}	1113	}
922	else	1114	else
923	#endif	1115	#endif
924	{	1116	{
925	rt_now = ev_time ();	1117	ev_rt_now = ev_time ();
926		1118
927	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1119	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
928	{	1120	{
		1121	#if EV_PERIODICS
929	periodics_reschedule (EV_A);	1122	periodics_reschedule (EV_A);
		1123	#endif
930		1124
931	/* adjust timers. this is easy, as the offset is the same for all */	1125	/* adjust timers. this is easy, as the offset is the same for all */
932	for (i = 0; i < timercnt; ++i)	1126	for (i = 0; i < timercnt; ++i)
933	((WT)timers [i])->at += rt_now - mn_now;	1127	((WT)timers [i])->at += ev_rt_now - mn_now;
934	}	1128	}
935		1129
936	mn_now = rt_now;	1130	mn_now = ev_rt_now;
937	}	1131	}
938	}	1132	}
939		1133
940	void	1134	void
941	ev_ref (EV_P)	1135	ev_ref (EV_P)
…		…
964	{	1158	{
965	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1159	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
966	call_pending (EV_A);	1160	call_pending (EV_A);
967	}	1161	}
968		1162
		1163	/* we might have forked, so reify kernel state if necessary */
		1164	if (expect_false (postfork))
		1165	loop_fork (EV_A);
		1166
969	/* update fd-related kernel structures */	1167	/* update fd-related kernel structures */
970	fd_reify (EV_A);	1168	fd_reify (EV_A);
971		1169
972	/* calculate blocking time */	1170	/* calculate blocking time */
973		1171
974	/* we only need this for !monotonic clockor timers, but as we basically	1172	/* we only need this for !monotonic clock or timers, but as we basically
975	always have timers, we just calculate it always */	1173	always have timers, we just calculate it always */
976	#if EV_USE_MONOTONIC	1174	#if EV_USE_MONOTONIC
977	if (expect_true (have_monotonic))	1175	if (expect_true (have_monotonic))
978	time_update_monotonic (EV_A);	1176	time_update_monotonic (EV_A);
979	else	1177	else
980	#endif	1178	#endif
981	{	1179	{
982	rt_now = ev_time ();	1180	ev_rt_now = ev_time ();
983	mn_now = rt_now;	1181	mn_now = ev_rt_now;
984	}	1182	}
985		1183
986	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1184	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
987	block = 0.;	1185	block = 0.;
988	else	1186	else
…		…
993	{	1191	{
994	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1192	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
995	if (block > to) block = to;	1193	if (block > to) block = to;
996	}	1194	}
997		1195
		1196	#if EV_PERIODICS
998	if (periodiccnt)	1197	if (periodiccnt)
999	{	1198	{
1000	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1199	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
1001	if (block > to) block = to;	1200	if (block > to) block = to;
1002	}	1201	}
		1202	#endif
1003		1203
1004	if (block < 0.) block = 0.;	1204	if (block < 0.) block = 0.;
1005	}	1205	}
1006		1206
1007	method_poll (EV_A_ block);	1207	method_poll (EV_A_ block);
1008		1208
1009	/* update rt_now, do magic */	1209	/* update ev_rt_now, do magic */
1010	time_update (EV_A);	1210	time_update (EV_A);
1011		1211
1012	/* queue pending timers and reschedule them */	1212	/* queue pending timers and reschedule them */
1013	timers_reify (EV_A); /* relative timers called last */	1213	timers_reify (EV_A); /* relative timers called last */
		1214	#if EV_PERIODICS
1014	periodics_reify (EV_A); /* absolute timers called first */	1215	periodics_reify (EV_A); /* absolute timers called first */
		1216	#endif
1015		1217
1016	/* queue idle watchers unless io or timers are pending */	1218	/* queue idle watchers unless io or timers are pending */
1017	if (!pendingcnt)	1219	if (idlecnt && !any_pending (EV_A))
1018	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1220	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1019		1221
1020	/* queue check watchers, to be executed first */	1222	/* queue check watchers, to be executed first */
1021	if (checkcnt)	1223	if (checkcnt)
1022	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1224	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
…		…
1097	return;	1299	return;
1098		1300
1099	assert (("ev_io_start called with negative fd", fd >= 0));	1301	assert (("ev_io_start called with negative fd", fd >= 0));
1100		1302
1101	ev_start (EV_A_ (W)w, 1);	1303	ev_start (EV_A_ (W)w, 1);
1102	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1304	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1103	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1305	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1104		1306
1105	fd_change (EV_A_ fd);	1307	fd_change (EV_A_ fd);
1106	}	1308	}
1107		1309
…		…
1110	{	1312	{
1111	ev_clear_pending (EV_A_ (W)w);	1313	ev_clear_pending (EV_A_ (W)w);
1112	if (!ev_is_active (w))	1314	if (!ev_is_active (w))
1113	return;	1315	return;
1114		1316
		1317	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1318
1115	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1319	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1116	ev_stop (EV_A_ (W)w);	1320	ev_stop (EV_A_ (W)w);
1117		1321
1118	fd_change (EV_A_ w->fd);	1322	fd_change (EV_A_ w->fd);
1119	}	1323	}
…		…
1127	((WT)w)->at += mn_now;	1331	((WT)w)->at += mn_now;
1128		1332
1129	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1333	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1130		1334
1131	ev_start (EV_A_ (W)w, ++timercnt);	1335	ev_start (EV_A_ (W)w, ++timercnt);
1132	array_needsize (timers, timermax, timercnt, );	1336	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1133	timers [timercnt - 1] = w;	1337	timers [timercnt - 1] = w;
1134	upheap ((WT *)timers, timercnt - 1);	1338	upheap ((WT *)timers, timercnt - 1);
1135		1339
1136	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1340	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1137	}	1341	}
…		…
1146	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1350	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1147		1351
1148	if (((W)w)->active < timercnt--)	1352	if (((W)w)->active < timercnt--)
1149	{	1353	{
1150	timers [((W)w)->active - 1] = timers [timercnt];	1354	timers [((W)w)->active - 1] = timers [timercnt];
1151	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1355	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1152	}	1356	}
1153		1357
1154	((WT)w)->at = w->repeat;	1358	((WT)w)->at -= mn_now;
1155		1359
1156	ev_stop (EV_A_ (W)w);	1360	ev_stop (EV_A_ (W)w);
1157	}	1361	}
1158		1362
1159	void	1363	void
…		…
1162	if (ev_is_active (w))	1366	if (ev_is_active (w))
1163	{	1367	{
1164	if (w->repeat)	1368	if (w->repeat)
1165	{	1369	{
1166	((WT)w)->at = mn_now + w->repeat;	1370	((WT)w)->at = mn_now + w->repeat;
1167	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1371	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1168	}	1372	}
1169	else	1373	else
1170	ev_timer_stop (EV_A_ w);	1374	ev_timer_stop (EV_A_ w);
1171	}	1375	}
1172	else if (w->repeat)	1376	else if (w->repeat)
1173	ev_timer_start (EV_A_ w);	1377	ev_timer_start (EV_A_ w);
1174	}	1378	}
1175		1379
		1380	#if EV_PERIODICS
1176	void	1381	void
1177	ev_periodic_start (EV_P_ struct ev_periodic *w)	1382	ev_periodic_start (EV_P_ struct ev_periodic *w)
1178	{	1383	{
1179	if (ev_is_active (w))	1384	if (ev_is_active (w))
1180	return;	1385	return;
1181		1386
		1387	if (w->reschedule_cb)
		1388	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1389	else if (w->interval)
		1390	{
1182	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1391	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1183
1184	/* this formula differs from the one in periodic_reify because we do not always round up */	1392	/* this formula differs from the one in periodic_reify because we do not always round up */
1185	if (w->interval)
1186	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1393	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1394	}
1187		1395
1188	ev_start (EV_A_ (W)w, ++periodiccnt);	1396	ev_start (EV_A_ (W)w, ++periodiccnt);
1189	array_needsize (periodics, periodicmax, periodiccnt, );	1397	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1190	periodics [periodiccnt - 1] = w;	1398	periodics [periodiccnt - 1] = w;
1191	upheap ((WT *)periodics, periodiccnt - 1);	1399	upheap ((WT *)periodics, periodiccnt - 1);
1192		1400
1193	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1401	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1194	}	1402	}
…		…
1203	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1411	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1204		1412
1205	if (((W)w)->active < periodiccnt--)	1413	if (((W)w)->active < periodiccnt--)
1206	{	1414	{
1207	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1415	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1208	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1416	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1209	}	1417	}
1210		1418
1211	ev_stop (EV_A_ (W)w);	1419	ev_stop (EV_A_ (W)w);
1212	}	1420	}
1213		1421
1214	void	1422	void
		1423	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1424	{
		1425	/* TODO: use adjustheap and recalculation */
		1426	ev_periodic_stop (EV_A_ w);
		1427	ev_periodic_start (EV_A_ w);
		1428	}
		1429	#endif
		1430
		1431	void
1215	ev_idle_start (EV_P_ struct ev_idle *w)	1432	ev_idle_start (EV_P_ struct ev_idle *w)
1216	{	1433	{
1217	if (ev_is_active (w))	1434	if (ev_is_active (w))
1218	return;	1435	return;
1219		1436
1220	ev_start (EV_A_ (W)w, ++idlecnt);	1437	ev_start (EV_A_ (W)w, ++idlecnt);
1221	array_needsize (idles, idlemax, idlecnt, );	1438	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1222	idles [idlecnt - 1] = w;	1439	idles [idlecnt - 1] = w;
1223	}	1440	}
1224		1441
1225	void	1442	void
1226	ev_idle_stop (EV_P_ struct ev_idle *w)	1443	ev_idle_stop (EV_P_ struct ev_idle *w)
1227	{	1444	{
1228	ev_clear_pending (EV_A_ (W)w);	1445	ev_clear_pending (EV_A_ (W)w);
1229	if (ev_is_active (w))	1446	if (!ev_is_active (w))
1230	return;	1447	return;
1231		1448
1232	idles [((W)w)->active - 1] = idles [--idlecnt];	1449	idles [((W)w)->active - 1] = idles [--idlecnt];
1233	ev_stop (EV_A_ (W)w);	1450	ev_stop (EV_A_ (W)w);
1234	}	1451	}
…		…
1238	{	1455	{
1239	if (ev_is_active (w))	1456	if (ev_is_active (w))
1240	return;	1457	return;
1241		1458
1242	ev_start (EV_A_ (W)w, ++preparecnt);	1459	ev_start (EV_A_ (W)w, ++preparecnt);
1243	array_needsize (prepares, preparemax, preparecnt, );	1460	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1244	prepares [preparecnt - 1] = w;	1461	prepares [preparecnt - 1] = w;
1245	}	1462	}
1246		1463
1247	void	1464	void
1248	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1465	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1249	{	1466	{
1250	ev_clear_pending (EV_A_ (W)w);	1467	ev_clear_pending (EV_A_ (W)w);
1251	if (ev_is_active (w))	1468	if (!ev_is_active (w))
1252	return;	1469	return;
1253		1470
1254	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1471	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1255	ev_stop (EV_A_ (W)w);	1472	ev_stop (EV_A_ (W)w);
1256	}	1473	}
…		…
1260	{	1477	{
1261	if (ev_is_active (w))	1478	if (ev_is_active (w))
1262	return;	1479	return;
1263		1480
1264	ev_start (EV_A_ (W)w, ++checkcnt);	1481	ev_start (EV_A_ (W)w, ++checkcnt);
1265	array_needsize (checks, checkmax, checkcnt, );	1482	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1266	checks [checkcnt - 1] = w;	1483	checks [checkcnt - 1] = w;
1267	}	1484	}
1268		1485
1269	void	1486	void
1270	ev_check_stop (EV_P_ struct ev_check *w)	1487	ev_check_stop (EV_P_ struct ev_check *w)
1271	{	1488	{
1272	ev_clear_pending (EV_A_ (W)w);	1489	ev_clear_pending (EV_A_ (W)w);
1273	if (ev_is_active (w))	1490	if (!ev_is_active (w))
1274	return;	1491	return;
1275		1492
1276	checks [((W)w)->active - 1] = checks [--checkcnt];	1493	checks [((W)w)->active - 1] = checks [--checkcnt];
1277	ev_stop (EV_A_ (W)w);	1494	ev_stop (EV_A_ (W)w);
1278	}	1495	}
…		…
1291	return;	1508	return;
1292		1509
1293	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1510	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1294		1511
1295	ev_start (EV_A_ (W)w, 1);	1512	ev_start (EV_A_ (W)w, 1);
1296	array_needsize (signals, signalmax, w->signum, signals_init);	1513	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1297	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1514	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1298		1515
1299	if (!((WL)w)->next)	1516	if (!((WL)w)->next)
1300	{	1517	{
		1518	#if _WIN32
		1519	signal (w->signum, sighandler);
		1520	#else
1301	struct sigaction sa;	1521	struct sigaction sa;
1302	sa.sa_handler = sighandler;	1522	sa.sa_handler = sighandler;
1303	sigfillset (&sa.sa_mask);	1523	sigfillset (&sa.sa_mask);
1304	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1524	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1305	sigaction (w->signum, &sa, 0);	1525	sigaction (w->signum, &sa, 0);
		1526	#endif
1306	}	1527	}
1307	}	1528	}
1308		1529
1309	void	1530	void
1310	ev_signal_stop (EV_P_ struct ev_signal *w)	1531	ev_signal_stop (EV_P_ struct ev_signal *w)
…		…
1335		1556
1336	void	1557	void
1337	ev_child_stop (EV_P_ struct ev_child *w)	1558	ev_child_stop (EV_P_ struct ev_child *w)
1338	{	1559	{
1339	ev_clear_pending (EV_A_ (W)w);	1560	ev_clear_pending (EV_A_ (W)w);
1340	if (ev_is_active (w))	1561	if (!ev_is_active (w))
1341	return;	1562	return;
1342		1563
1343	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1564	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1344	ev_stop (EV_A_ (W)w);	1565	ev_stop (EV_A_ (W)w);
1345	}	1566	}
…		…
1360	void (cb)(int revents, void arg) = once->cb;	1581	void (cb)(int revents, void arg) = once->cb;
1361	void *arg = once->arg;	1582	void *arg = once->arg;
1362		1583
1363	ev_io_stop (EV_A_ &once->io);	1584	ev_io_stop (EV_A_ &once->io);
1364	ev_timer_stop (EV_A_ &once->to);	1585	ev_timer_stop (EV_A_ &once->to);
1365	free (once);	1586	ev_free (once);
1366		1587
1367	cb (revents, arg);	1588	cb (revents, arg);
1368	}	1589	}
1369		1590
1370	static void	1591	static void
…		…
1380	}	1601	}
1381		1602
1382	void	1603	void
1383	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1604	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1384	{	1605	{
1385	struct ev_once *once = malloc (sizeof (struct ev_once));	1606	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1386		1607
1387	if (!once)	1608	if (!once)
1388	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1609	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1389	else	1610	else
1390	{	1611	{
1391	once->cb = cb;	1612	once->cb = cb;
1392	once->arg = arg;	1613	once->arg = arg;
1393		1614
1394	ev_watcher_init (&once->io, once_cb_io);	1615	ev_init (&once->io, once_cb_io);
1395	if (fd >= 0)	1616	if (fd >= 0)
1396	{	1617	{
1397	ev_io_set (&once->io, fd, events);	1618	ev_io_set (&once->io, fd, events);
1398	ev_io_start (EV_A_ &once->io);	1619	ev_io_start (EV_A_ &once->io);
1399	}	1620	}
1400		1621
1401	ev_watcher_init (&once->to, once_cb_to);	1622	ev_init (&once->to, once_cb_to);
1402	if (timeout >= 0.)	1623	if (timeout >= 0.)
1403	{	1624	{
1404	ev_timer_set (&once->to, timeout, 0.);	1625	ev_timer_set (&once->to, timeout, 0.);
1405	ev_timer_start (EV_A_ &once->to);	1626	ev_timer_start (EV_A_ &once->to);
1406	}	1627	}
1407	}	1628	}
1408	}	1629	}
1409		1630
		1631	#ifdef __cplusplus
		1632	}
		1633	#endif
		1634

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Comparing libev/ev.c (file contents): Revision 1.64 by root, Sun Nov 4 23:14:11 2007 UTC vs. Revision 1.103 by root, Mon Nov 12 00:31:08 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.64 by root, Sun Nov 4 23:14:11 2007 UTC vs.
Revision 1.103 by root, Mon Nov 12 00:31:08 2007 UTC