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

Comparing libev/ev.c (file contents):
Revision 1.69 by root, Tue Nov 6 00:10:04 2007 UTC vs.
Revision 1.122 by root, Sat Nov 17 02:00:48 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
		64	# if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT)
		65	# define EV_USE_PORT 1
		66	# endif
		67
55	#endif	68	#endif
56		69
57	#include <math.h>	70	#include <math.h>
58	#include <stdlib.h>	71	#include <stdlib.h>
59	#include <unistd.h>
60	#include <fcntl.h>	72	#include <fcntl.h>
61	#include <signal.h>
62	#include <stddef.h>	73	#include <stddef.h>
63		74
64	#include <stdio.h>	75	#include <stdio.h>
65		76
66	#include <assert.h>	77	#include <assert.h>
67	#include <errno.h>	78	#include <errno.h>
68	#include <sys/types.h>	79	#include <sys/types.h>
		80	#include <time.h>
		81
		82	#include <signal.h>
		83
69	#ifndef WIN32	84	#ifndef _WIN32
		85	# include <unistd.h>
		86	# include <sys/time.h>
70	# include <sys/wait.h>	87	# include <sys/wait.h>
		88	#else
		89	# define WIN32_LEAN_AND_MEAN
		90	# include <windows.h>
		91	# ifndef EV_SELECT_IS_WINSOCKET
		92	# define EV_SELECT_IS_WINSOCKET 1
71	#endif	93	# endif
72	#include <sys/time.h>	94	#endif
73	#include <time.h>
74		95
75	/**/	96	/**/
76		97
77	#ifndef EV_USE_MONOTONIC	98	#ifndef EV_USE_MONOTONIC
78	# define EV_USE_MONOTONIC 1	99	# define EV_USE_MONOTONIC 0
		100	#endif
		101
		102	#ifndef EV_USE_REALTIME
		103	# define EV_USE_REALTIME 0
79	#endif	104	#endif
80		105
81	#ifndef EV_USE_SELECT	106	#ifndef EV_USE_SELECT
82	# define EV_USE_SELECT 1	107	# define EV_USE_SELECT 1
83	#endif	108	#endif
84		109
85	#ifndef EV_USE_POLL	110	#ifndef EV_USE_POLL
86	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	111	# ifdef _WIN32
		112	# define EV_USE_POLL 0
		113	# else
		114	# define EV_USE_POLL 1
		115	# endif
87	#endif	116	#endif
88		117
89	#ifndef EV_USE_EPOLL	118	#ifndef EV_USE_EPOLL
90	# define EV_USE_EPOLL 0	119	# define EV_USE_EPOLL 0
91	#endif	120	#endif
92		121
93	#ifndef EV_USE_KQUEUE	122	#ifndef EV_USE_KQUEUE
94	# define EV_USE_KQUEUE 0	123	# define EV_USE_KQUEUE 0
95	#endif	124	#endif
96		125
97	#ifndef EV_USE_WIN32
98	# ifdef WIN32
99	# define EV_USE_WIN32 1
100	# else
101	# define EV_USE_WIN32 0
102	# endif
103	#endif
104
105	#ifndef EV_USE_REALTIME	126	#ifndef EV_USE_PORT
106	# define EV_USE_REALTIME 1	127	# define EV_USE_PORT 0
107	#endif	128	#endif
108		129
109	/**/	130	/**/
		131
		132	/* darwin simply cannot be helped */
		133	#ifdef __APPLE__
		134	# undef EV_USE_POLL
		135	# undef EV_USE_KQUEUE
		136	#endif
110		137
111	#ifndef CLOCK_MONOTONIC	138	#ifndef CLOCK_MONOTONIC
112	# undef EV_USE_MONOTONIC	139	# undef EV_USE_MONOTONIC
113	# define EV_USE_MONOTONIC 0	140	# define EV_USE_MONOTONIC 0
114	#endif	141	#endif
…		…
116	#ifndef CLOCK_REALTIME	143	#ifndef CLOCK_REALTIME
117	# undef EV_USE_REALTIME	144	# undef EV_USE_REALTIME
118	# define EV_USE_REALTIME 0	145	# define EV_USE_REALTIME 0
119	#endif	146	#endif
120		147
		148	#if EV_SELECT_IS_WINSOCKET
		149	# include <winsock.h>
		150	#endif
		151
121	/**/	152	/**/
122		153
123	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	154	#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) */	155	#define MAX_BLOCKTIME 59.743 /* 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 */	156	#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 */	157	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
127		158
		159	#ifdef EV_H
		160	# include EV_H
		161	#else
128	#include "ev.h"	162	# include "ev.h"
		163	#endif
129		164
130	#if __GNUC__ >= 3	165	#if __GNUC__ >= 3
131	# define expect(expr,value) __builtin_expect ((expr),(value))	166	# define expect(expr,value) __builtin_expect ((expr),(value))
132	# define inline inline	167	# define inline inline
133	#else	168	#else
…		…
139	#define expect_true(expr) expect ((expr) != 0, 1)	174	#define expect_true(expr) expect ((expr) != 0, 1)
140		175
141	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	176	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	177	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
143		178
		179	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		180	#define EMPTY2(a,b) /* used to suppress some warnings */
		181
144	typedef struct ev_watcher *W;	182	typedef struct ev_watcher *W;
145	typedef struct ev_watcher_list *WL;	183	typedef struct ev_watcher_list *WL;
146	typedef struct ev_watcher_time *WT;	184	typedef struct ev_watcher_time *WT;
147		185
148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	186	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149		187
150	#if WIN32	188	#ifdef _WIN32
151	/* note: the comment below could not be substantiated, but what would I care */	189	# include "ev_win32.c"
152	/* MSDN says this is required to handle SIGFPE */
153	volatile double SIGFPE_REQ = 0.0f;
154	#endif	190	#endif
155		191
156	/*****************************************************************************/	192	/*****************************************************************************/
157		193
158	static void (*syserr_cb)(void);	194	static void (syserr_cb)(const char msg);
159		195
160	void ev_set_syserr_cb (void (*cb)(void))	196	void ev_set_syserr_cb (void (cb)(const char msg))
161	{	197	{
162	syserr_cb = cb;	198	syserr_cb = cb;
163	}	199	}
164		200
165	static void	201	static void
166	syserr (void)	202	syserr (const char *msg)
167	{	203	{
		204	if (!msg)
		205	msg = "(libev) system error";
		206
168	if (syserr_cb)	207	if (syserr_cb)
169	syserr_cb ();	208	syserr_cb (msg);
170	else	209	else
171	{	210	{
172	perror ("libev");	211	perror (msg);
173	abort ();	212	abort ();
174	}	213	}
175	}	214	}
176		215
177	static void (alloc)(void *ptr, long size);	216	static void (alloc)(void *ptr, long size);
…		…
203	typedef struct	242	typedef struct
204	{	243	{
205	WL head;	244	WL head;
206	unsigned char events;	245	unsigned char events;
207	unsigned char reify;	246	unsigned char reify;
		247	#if EV_SELECT_IS_WINSOCKET
		248	SOCKET handle;
		249	#endif
208	} ANFD;	250	} ANFD;
209		251
210	typedef struct	252	typedef struct
211	{	253	{
212	W w;	254	W w;
213	int events;	255	int events;
214	} ANPENDING;	256	} ANPENDING;
215		257
216	#if EV_MULTIPLICITY	258	#if EV_MULTIPLICITY
217		259
218	struct ev_loop	260	struct ev_loop
219	{	261	{
		262	ev_tstamp ev_rt_now;
		263	#define ev_rt_now ((loop)->ev_rt_now)
220	# define VAR(name,decl) decl;	264	#define VAR(name,decl) decl;
221	# include "ev_vars.h"	265	#include "ev_vars.h"
222	};
223	# undef VAR	266	#undef VAR
		267	};
224	# include "ev_wrap.h"	268	#include "ev_wrap.h"
		269
		270	static struct ev_loop default_loop_struct;
		271	struct ev_loop *ev_default_loop_ptr;
225		272
226	#else	273	#else
227		274
		275	ev_tstamp ev_rt_now;
228	# define VAR(name,decl) static decl;	276	#define VAR(name,decl) static decl;
229	# include "ev_vars.h"	277	#include "ev_vars.h"
230	# undef VAR	278	#undef VAR
		279
		280	static int ev_default_loop_ptr;
231		281
232	#endif	282	#endif
233		283
234	/*****************************************************************************/	284	/*****************************************************************************/
235		285
236	inline ev_tstamp	286	ev_tstamp
237	ev_time (void)	287	ev_time (void)
238	{	288	{
239	#if EV_USE_REALTIME	289	#if EV_USE_REALTIME
240	struct timespec ts;	290	struct timespec ts;
241	clock_gettime (CLOCK_REALTIME, &ts);	291	clock_gettime (CLOCK_REALTIME, &ts);
…		…
260	#endif	310	#endif
261		311
262	return ev_time ();	312	return ev_time ();
263	}	313	}
264		314
		315	#if EV_MULTIPLICITY
265	ev_tstamp	316	ev_tstamp
266	ev_now (EV_P)	317	ev_now (EV_P)
267	{	318	{
268	return rt_now;	319	return ev_rt_now;
269	}	320	}
		321	#endif
270		322
271	#define array_roundsize(base,n) ((n) \| 4 & ~3)	323	#define array_roundsize(type,n) (((n) \| 4) & ~3)
272		324
273	#define array_needsize(base,cur,cnt,init) \	325	#define array_needsize(type,base,cur,cnt,init) \
274	if (expect_false ((cnt) > cur)) \	326	if (expect_false ((cnt) > cur)) \
275	{ \	327	{ \
276	int newcnt = cur; \	328	int newcnt = cur; \
277	do \	329	do \
278	{ \	330	{ \
279	newcnt = array_roundsize (base, newcnt << 1); \	331	newcnt = array_roundsize (type, newcnt << 1); \
280	} \	332	} \
281	while ((cnt) > newcnt); \	333	while ((cnt) > newcnt); \
282	\	334	\
283	base = ev_realloc (base, sizeof (base) (newcnt)); \	335	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
284	init (base + cur, newcnt - cur); \	336	init (base + cur, newcnt - cur); \
285	cur = newcnt; \	337	cur = newcnt; \
286	}	338	}
287		339
288	#define array_slim(stem) \	340	#define array_slim(type,stem) \
289	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	341	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
290	{ \	342	{ \
291	stem ## max = array_roundsize (stem ## cnt >> 1); \	343	stem ## max = array_roundsize (stem ## cnt >> 1); \
292	base = ev_realloc (base, sizeof (base) (stem ## max)); \	344	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
293	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	345	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
294	}	346	}
295		347
296	#define array_free(stem, idx) \	348	#define array_free(stem, idx) \
297	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	349	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
…		…
309		361
310	++base;	362	++base;
311	}	363	}
312	}	364	}
313		365
314	static void	366	void
315	event (EV_P_ W w, int events)	367	ev_feed_event (EV_P_ void *w, int revents)
316	{	368	{
		369	W w_ = (W)w;
		370
317	if (w->pending)	371	if (w_->pending)
318	{	372	{
319	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	373	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
320	return;	374	return;
321	}	375	}
322		376
323	w->pending = ++pendingcnt [ABSPRI (w)];	377	w_->pending = ++pendingcnt [ABSPRI (w_)];
324	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	378	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
325	pendings [ABSPRI (w)][w->pending - 1].w = w;	379	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
326	pendings [ABSPRI (w)][w->pending - 1].events = events;	380	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
327	}	381	}
328		382
329	static void	383	static void
330	queue_events (EV_P_ W *events, int eventcnt, int type)	384	queue_events (EV_P_ W *events, int eventcnt, int type)
331	{	385	{
332	int i;	386	int i;
333		387
334	for (i = 0; i < eventcnt; ++i)	388	for (i = 0; i < eventcnt; ++i)
335	event (EV_A_ events [i], type);	389	ev_feed_event (EV_A_ events [i], type);
336	}	390	}
337		391
338	static void	392	inline void
339	fd_event (EV_P_ int fd, int events)	393	fd_event (EV_P_ int fd, int revents)
340	{	394	{
341	ANFD *anfd = anfds + fd;	395	ANFD *anfd = anfds + fd;
342	struct ev_io *w;	396	struct ev_io *w;
343		397
344	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	398	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
345	{	399	{
346	int ev = w->events & events;	400	int ev = w->events & revents;
347		401
348	if (ev)	402	if (ev)
349	event (EV_A_ (W)w, ev);	403	ev_feed_event (EV_A_ (W)w, ev);
350	}	404	}
		405	}
		406
		407	void
		408	ev_feed_fd_event (EV_P_ int fd, int revents)
		409	{
		410	fd_event (EV_A_ fd, revents);
351	}	411	}
352		412
353	/*****************************************************************************/	413	/*****************************************************************************/
354		414
355	static void	415	static void
…		…
366	int events = 0;	426	int events = 0;
367		427
368	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	428	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
369	events \|= w->events;	429	events \|= w->events;
370		430
		431	#if EV_SELECT_IS_WINSOCKET
		432	if (events)
		433	{
		434	unsigned long argp;
		435	anfd->handle = _get_osfhandle (fd);
		436	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		437	}
		438	#endif
		439
371	anfd->reify = 0;	440	anfd->reify = 0;
372		441
373	method_modify (EV_A_ fd, anfd->events, events);	442	method_modify (EV_A_ fd, anfd->events, events);
374	anfd->events = events;	443	anfd->events = events;
375	}	444	}
…		…
378	}	447	}
379		448
380	static void	449	static void
381	fd_change (EV_P_ int fd)	450	fd_change (EV_P_ int fd)
382	{	451	{
383	if (anfds [fd].reify \|\| fdchangecnt < 0)	452	if (anfds [fd].reify)
384	return;	453	return;
385		454
386	anfds [fd].reify = 1;	455	anfds [fd].reify = 1;
387		456
388	++fdchangecnt;	457	++fdchangecnt;
389	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	458	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
390	fdchanges [fdchangecnt - 1] = fd;	459	fdchanges [fdchangecnt - 1] = fd;
391	}	460	}
392		461
393	static void	462	static void
394	fd_kill (EV_P_ int fd)	463	fd_kill (EV_P_ int fd)
…		…
396	struct ev_io *w;	465	struct ev_io *w;
397		466
398	while ((w = (struct ev_io *)anfds [fd].head))	467	while ((w = (struct ev_io *)anfds [fd].head))
399	{	468	{
400	ev_io_stop (EV_A_ w);	469	ev_io_stop (EV_A_ w);
401	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	470	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
402	}	471	}
		472	}
		473
		474	static int
		475	fd_valid (int fd)
		476	{
		477	#ifdef _WIN32
		478	return _get_osfhandle (fd) != -1;
		479	#else
		480	return fcntl (fd, F_GETFD) != -1;
		481	#endif
403	}	482	}
404		483
405	/* called on EBADF to verify fds */	484	/* called on EBADF to verify fds */
406	static void	485	static void
407	fd_ebadf (EV_P)	486	fd_ebadf (EV_P)
408	{	487	{
409	int fd;	488	int fd;
410		489
411	for (fd = 0; fd < anfdmax; ++fd)	490	for (fd = 0; fd < anfdmax; ++fd)
412	if (anfds [fd].events)	491	if (anfds [fd].events)
413	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	492	if (!fd_valid (fd) == -1 && errno == EBADF)
414	fd_kill (EV_A_ fd);	493	fd_kill (EV_A_ fd);
415	}	494	}
416		495
417	/* called on ENOMEM in select/poll to kill some fds and retry */	496	/* called on ENOMEM in select/poll to kill some fds and retry */
418	static void	497	static void
…		…
426	fd_kill (EV_A_ fd);	505	fd_kill (EV_A_ fd);
427	return;	506	return;
428	}	507	}
429	}	508	}
430		509
431	/* susually called after fork if method needs to re-arm all fds from scratch */	510	/* usually called after fork if method needs to re-arm all fds from scratch */
432	static void	511	static void
433	fd_rearm_all (EV_P)	512	fd_rearm_all (EV_P)
434	{	513	{
435	int fd;	514	int fd;
436		515
…		…
484		563
485	heap [k] = w;	564	heap [k] = w;
486	((W)heap [k])->active = k + 1;	565	((W)heap [k])->active = k + 1;
487	}	566	}
488		567
		568	inline void
		569	adjustheap (WT *heap, int N, int k)
		570	{
		571	upheap (heap, k);
		572	downheap (heap, N, k);
		573	}
		574
489	/*****************************************************************************/	575	/*****************************************************************************/
490		576
491	typedef struct	577	typedef struct
492	{	578	{
493	WL head;	579	WL head;
…		…
514	}	600	}
515		601
516	static void	602	static void
517	sighandler (int signum)	603	sighandler (int signum)
518	{	604	{
519	#if WIN32	605	#if _WIN32
520	signal (signum, sighandler);	606	signal (signum, sighandler);
521	#endif	607	#endif
522		608
523	signals [signum - 1].gotsig = 1;	609	signals [signum - 1].gotsig = 1;
524		610
…		…
529	write (sigpipe [1], &signum, 1);	615	write (sigpipe [1], &signum, 1);
530	errno = old_errno;	616	errno = old_errno;
531	}	617	}
532	}	618	}
533		619
		620	void
		621	ev_feed_signal_event (EV_P_ int signum)
		622	{
		623	WL w;
		624
		625	#if EV_MULTIPLICITY
		626	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		627	#endif
		628
		629	--signum;
		630
		631	if (signum < 0 \|\| signum >= signalmax)
		632	return;
		633
		634	signals [signum].gotsig = 0;
		635
		636	for (w = signals [signum].head; w; w = w->next)
		637	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		638	}
		639
534	static void	640	static void
535	sigcb (EV_P_ struct ev_io *iow, int revents)	641	sigcb (EV_P_ struct ev_io *iow, int revents)
536	{	642	{
537	WL w;
538	int signum;	643	int signum;
539		644
540	read (sigpipe [0], &revents, 1);	645	read (sigpipe [0], &revents, 1);
541	gotsig = 0;	646	gotsig = 0;
542		647
543	for (signum = signalmax; signum--; )	648	for (signum = signalmax; signum--; )
544	if (signals [signum].gotsig)	649	if (signals [signum].gotsig)
545	{	650	ev_feed_signal_event (EV_A_ signum + 1);
546	signals [signum].gotsig = 0;	651	}
547		652
548	for (w = signals [signum].head; w; w = w->next)	653	inline void
549	event (EV_A_ (W)w, EV_SIGNAL);	654	fd_intern (int fd)
550	}	655	{
		656	#ifdef _WIN32
		657	int arg = 1;
		658	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		659	#else
		660	fcntl (fd, F_SETFD, FD_CLOEXEC);
		661	fcntl (fd, F_SETFL, O_NONBLOCK);
		662	#endif
551	}	663	}
552		664
553	static void	665	static void
554	siginit (EV_P)	666	siginit (EV_P)
555	{	667	{
556	#ifndef WIN32	668	fd_intern (sigpipe [0]);
557	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	669	fd_intern (sigpipe [1]);
558	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
559
560	/* rather than sort out wether we really need nb, set it */
561	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
562	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
563	#endif
564		670
565	ev_io_set (&sigev, sigpipe [0], EV_READ);	671	ev_io_set (&sigev, sigpipe [0], EV_READ);
566	ev_io_start (EV_A_ &sigev);	672	ev_io_start (EV_A_ &sigev);
567	ev_unref (EV_A); /* child watcher should not keep loop alive */	673	ev_unref (EV_A); /* child watcher should not keep loop alive */
568	}	674	}
569		675
570	/*****************************************************************************/	676	/*****************************************************************************/
571		677
572	#ifndef WIN32
573
574	static struct ev_child *childs [PID_HASHSIZE];	678	static struct ev_child *childs [PID_HASHSIZE];
		679
		680	#ifndef _WIN32
		681
575	static struct ev_signal childev;	682	static struct ev_signal childev;
576		683
577	#ifndef WCONTINUED	684	#ifndef WCONTINUED
578	# define WCONTINUED 0	685	# define WCONTINUED 0
579	#endif	686	#endif
…		…
587	if (w->pid == pid \|\| !w->pid)	694	if (w->pid == pid \|\| !w->pid)
588	{	695	{
589	ev_priority (w) = ev_priority (sw); /* need to do it now */	696	ev_priority (w) = ev_priority (sw); /* need to do it now */
590	w->rpid = pid;	697	w->rpid = pid;
591	w->rstatus = status;	698	w->rstatus = status;
592	event (EV_A_ (W)w, EV_CHILD);	699	ev_feed_event (EV_A_ (W)w, EV_CHILD);
593	}	700	}
594	}	701	}
595		702
596	static void	703	static void
597	childcb (EV_P_ struct ev_signal *sw, int revents)	704	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
599	int pid, status;	706	int pid, status;
600		707
601	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	708	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
602	{	709	{
603	/* make sure we are called again until all childs have been reaped */	710	/* make sure we are called again until all childs have been reaped */
604	event (EV_A_ (W)sw, EV_SIGNAL);	711	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
605		712
606	child_reap (EV_A_ sw, pid, pid, status);	713	child_reap (EV_A_ sw, pid, pid, status);
607	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	714	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
608	}	715	}
609	}	716	}
610		717
611	#endif	718	#endif
612		719
613	/*****************************************************************************/	720	/*****************************************************************************/
614		721
		722	#if EV_USE_PORT
		723	# include "ev_port.c"
		724	#endif
615	#if EV_USE_KQUEUE	725	#if EV_USE_KQUEUE
616	# include "ev_kqueue.c"	726	# include "ev_kqueue.c"
617	#endif	727	#endif
618	#if EV_USE_EPOLL	728	#if EV_USE_EPOLL
619	# include "ev_epoll.c"	729	# include "ev_epoll.c"
…		…
639		749
640	/* return true if we are running with elevated privileges and should ignore env variables */	750	/* return true if we are running with elevated privileges and should ignore env variables */
641	static int	751	static int
642	enable_secure (void)	752	enable_secure (void)
643	{	753	{
644	#ifdef WIN32	754	#ifdef _WIN32
645	return 0;	755	return 0;
646	#else	756	#else
647	return getuid () != geteuid ()	757	return getuid () != geteuid ()
648	\|\| getgid () != getegid ();	758	\|\| getgid () != getegid ();
649	#endif	759	#endif
650	}	760	}
651		761
652	int	762	unsigned int
653	ev_method (EV_P)	763	ev_method (EV_P)
654	{	764	{
655	return method;	765	return method;
656	}	766	}
657		767
658	static void	768	static void
659	loop_init (EV_P_ int methods)	769	loop_init (EV_P_ unsigned int flags)
660	{	770	{
661	if (!method)	771	if (!method)
662	{	772	{
663	#if EV_USE_MONOTONIC	773	#if EV_USE_MONOTONIC
664	{	774	{
…		…
666	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	776	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
667	have_monotonic = 1;	777	have_monotonic = 1;
668	}	778	}
669	#endif	779	#endif
670		780
671	rt_now = ev_time ();	781	ev_rt_now = ev_time ();
672	mn_now = get_clock ();	782	mn_now = get_clock ();
673	now_floor = mn_now;	783	now_floor = mn_now;
674	rtmn_diff = rt_now - mn_now;	784	rtmn_diff = ev_rt_now - mn_now;
675		785
676	if (methods == EVMETHOD_AUTO)	786	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
677	if (!enable_secure () && getenv ("LIBEV_METHODS"))
678	methods = atoi (getenv ("LIBEV_METHODS"));	787	flags = atoi (getenv ("LIBEV_FLAGS"));
679	else	788
680	methods = EVMETHOD_ANY;	789	if (!(flags & 0x0000ffff))
		790	flags \|= 0x0000ffff;
681		791
682	method = 0;	792	method = 0;
683	#if EV_USE_WIN32	793	#if EV_USE_PORT
684	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	794	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);
685	#endif	795	#endif
686	#if EV_USE_KQUEUE	796	#if EV_USE_KQUEUE
687	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	797	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
688	#endif	798	#endif
689	#if EV_USE_EPOLL	799	#if EV_USE_EPOLL
690	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	800	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
691	#endif	801	#endif
692	#if EV_USE_POLL	802	#if EV_USE_POLL
693	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	803	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
694	#endif	804	#endif
695	#if EV_USE_SELECT	805	#if EV_USE_SELECT
696	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	806	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
697	#endif	807	#endif
		808
		809	ev_init (&sigev, sigcb);
		810	ev_set_priority (&sigev, EV_MAXPRI);
698	}	811	}
699	}	812	}
700		813
701	void	814	void
702	loop_destroy (EV_P)	815	loop_destroy (EV_P)
703	{	816	{
704	int i;	817	int i;
705		818
706	#if EV_USE_WIN32	819	#if EV_USE_PORT
707	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	820	if (method == EVMETHOD_PORT ) port_destroy (EV_A);
708	#endif	821	#endif
709	#if EV_USE_KQUEUE	822	#if EV_USE_KQUEUE
710	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	823	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
711	#endif	824	#endif
712	#if EV_USE_EPOLL	825	#if EV_USE_EPOLL
…		…
720	#endif	833	#endif
721		834
722	for (i = NUMPRI; i--; )	835	for (i = NUMPRI; i--; )
723	array_free (pending, [i]);	836	array_free (pending, [i]);
724		837
		838	/* have to use the microsoft-never-gets-it-right macro */
725	array_free (fdchange, );	839	array_free (fdchange, EMPTY0);
726	array_free (timer, );	840	array_free (timer, EMPTY0);
		841	#if EV_PERIODICS
727	array_free (periodic, );	842	array_free (periodic, EMPTY0);
		843	#endif
728	array_free (idle, );	844	array_free (idle, EMPTY0);
729	array_free (prepare, );	845	array_free (prepare, EMPTY0);
730	array_free (check, );	846	array_free (check, EMPTY0);
731		847
732	method = 0;	848	method = 0;
733	/TODO/
734	}	849	}
735		850
736	void	851	static void
737	loop_fork (EV_P)	852	loop_fork (EV_P)
738	{	853	{
739	/TODO/	854	#if EV_USE_PORT
		855	if (method == EVMETHOD_PORT ) port_fork (EV_A);
		856	#endif
		857	#if EV_USE_KQUEUE
		858	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		859	#endif
740	#if EV_USE_EPOLL	860	#if EV_USE_EPOLL
741	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	861	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
742	#endif	862	#endif
743	#if EV_USE_KQUEUE	863
744	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	864	if (ev_is_active (&sigev))
745	#endif	865	{
		866	/* default loop */
		867
		868	ev_ref (EV_A);
		869	ev_io_stop (EV_A_ &sigev);
		870	close (sigpipe [0]);
		871	close (sigpipe [1]);
		872
		873	while (pipe (sigpipe))
		874	syserr ("(libev) error creating pipe");
		875
		876	siginit (EV_A);
		877	}
		878
		879	postfork = 0;
746	}	880	}
747		881
748	#if EV_MULTIPLICITY	882	#if EV_MULTIPLICITY
749	struct ev_loop *	883	struct ev_loop *
750	ev_loop_new (int methods)	884	ev_loop_new (unsigned int flags)
751	{	885	{
752	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	886	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
753		887
754	memset (loop, 0, sizeof (struct ev_loop));	888	memset (loop, 0, sizeof (struct ev_loop));
755		889
756	loop_init (EV_A_ methods);	890	loop_init (EV_A_ flags);
757		891
758	if (ev_method (EV_A))	892	if (ev_method (EV_A))
759	return loop;	893	return loop;
760		894
761	return 0;	895	return 0;
…		…
769	}	903	}
770		904
771	void	905	void
772	ev_loop_fork (EV_P)	906	ev_loop_fork (EV_P)
773	{	907	{
774	loop_fork (EV_A);	908	postfork = 1;
775	}	909	}
776		910
777	#endif	911	#endif
778		912
779	#if EV_MULTIPLICITY	913	#if EV_MULTIPLICITY
780	struct ev_loop default_loop_struct;
781	static struct ev_loop *default_loop;
782
783	struct ev_loop *	914	struct ev_loop *
		915	ev_default_loop_ (unsigned int flags)
784	#else	916	#else
785	static int default_loop;
786
787	int	917	int
		918	ev_default_loop (unsigned int flags)
788	#endif	919	#endif
789	ev_default_loop (int methods)
790	{	920	{
791	if (sigpipe [0] == sigpipe [1])	921	if (sigpipe [0] == sigpipe [1])
792	if (pipe (sigpipe))	922	if (pipe (sigpipe))
793	return 0;	923	return 0;
794		924
795	if (!default_loop)	925	if (!ev_default_loop_ptr)
796	{	926	{
797	#if EV_MULTIPLICITY	927	#if EV_MULTIPLICITY
798	struct ev_loop *loop = default_loop = &default_loop_struct;	928	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
799	#else	929	#else
800	default_loop = 1;	930	ev_default_loop_ptr = 1;
801	#endif	931	#endif
802		932
803	loop_init (EV_A_ methods);	933	loop_init (EV_A_ flags);
804		934
805	if (ev_method (EV_A))	935	if (ev_method (EV_A))
806	{	936	{
807	ev_watcher_init (&sigev, sigcb);
808	ev_set_priority (&sigev, EV_MAXPRI);
809	siginit (EV_A);	937	siginit (EV_A);
810		938
811	#ifndef WIN32	939	#ifndef _WIN32
812	ev_signal_init (&childev, childcb, SIGCHLD);	940	ev_signal_init (&childev, childcb, SIGCHLD);
813	ev_set_priority (&childev, EV_MAXPRI);	941	ev_set_priority (&childev, EV_MAXPRI);
814	ev_signal_start (EV_A_ &childev);	942	ev_signal_start (EV_A_ &childev);
815	ev_unref (EV_A); /* child watcher should not keep loop alive */	943	ev_unref (EV_A); /* child watcher should not keep loop alive */
816	#endif	944	#endif
817	}	945	}
818	else	946	else
819	default_loop = 0;	947	ev_default_loop_ptr = 0;
820	}	948	}
821		949
822	return default_loop;	950	return ev_default_loop_ptr;
823	}	951	}
824		952
825	void	953	void
826	ev_default_destroy (void)	954	ev_default_destroy (void)
827	{	955	{
828	#if EV_MULTIPLICITY	956	#if EV_MULTIPLICITY
829	struct ev_loop *loop = default_loop;	957	struct ev_loop *loop = ev_default_loop_ptr;
830	#endif	958	#endif
831		959
		960	#ifndef _WIN32
832	ev_ref (EV_A); /* child watcher */	961	ev_ref (EV_A); /* child watcher */
833	ev_signal_stop (EV_A_ &childev);	962	ev_signal_stop (EV_A_ &childev);
		963	#endif
834		964
835	ev_ref (EV_A); /* signal watcher */	965	ev_ref (EV_A); /* signal watcher */
836	ev_io_stop (EV_A_ &sigev);	966	ev_io_stop (EV_A_ &sigev);
837		967
838	close (sigpipe [0]); sigpipe [0] = 0;	968	close (sigpipe [0]); sigpipe [0] = 0;
…		…
843		973
844	void	974	void
845	ev_default_fork (void)	975	ev_default_fork (void)
846	{	976	{
847	#if EV_MULTIPLICITY	977	#if EV_MULTIPLICITY
848	struct ev_loop *loop = default_loop;	978	struct ev_loop *loop = ev_default_loop_ptr;
849	#endif	979	#endif
850		980
851	loop_fork (EV_A);	981	if (method)
852		982	postfork = 1;
853	ev_io_stop (EV_A_ &sigev);
854	close (sigpipe [0]);
855	close (sigpipe [1]);
856	pipe (sigpipe);
857
858	ev_ref (EV_A); /* signal watcher */
859	siginit (EV_A);
860	}	983	}
861		984
862	/*****************************************************************************/	985	/*****************************************************************************/
863		986
864	static void	987	static int
		988	any_pending (EV_P)
		989	{
		990	int pri;
		991
		992	for (pri = NUMPRI; pri--; )
		993	if (pendingcnt [pri])
		994	return 1;
		995
		996	return 0;
		997	}
		998
		999	inline void
865	call_pending (EV_P)	1000	call_pending (EV_P)
866	{	1001	{
867	int pri;	1002	int pri;
868		1003
869	for (pri = NUMPRI; pri--; )	1004	for (pri = NUMPRI; pri--; )
870	while (pendingcnt [pri])	1005	while (pendingcnt [pri])
871	{	1006	{
872	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1007	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
873		1008
874	if (p->w)	1009	if (expect_true (p->w))
875	{	1010	{
876	p->w->pending = 0;	1011	p->w->pending = 0;
877	p->w->cb (EV_A_ p->w, p->events);	1012	EV_CB_INVOKE (p->w, p->events);
878	}	1013	}
879	}	1014	}
880	}	1015	}
881		1016
882	static void	1017	static void
…		…
890		1025
891	/* first reschedule or stop timer */	1026	/* first reschedule or stop timer */
892	if (w->repeat)	1027	if (w->repeat)
893	{	1028	{
894	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1029	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1030
895	((WT)w)->at = mn_now + w->repeat;	1031	((WT)w)->at += w->repeat;
		1032	if (((WT)w)->at < mn_now)
		1033	((WT)w)->at = mn_now;
		1034
896	downheap ((WT *)timers, timercnt, 0);	1035	downheap ((WT *)timers, timercnt, 0);
897	}	1036	}
898	else	1037	else
899	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1038	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
900		1039
901	event (EV_A_ (W)w, EV_TIMEOUT);	1040	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
902	}	1041	}
903	}	1042	}
904		1043
		1044	#if EV_PERIODICS
905	static void	1045	static void
906	periodics_reify (EV_P)	1046	periodics_reify (EV_P)
907	{	1047	{
908	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1048	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
909	{	1049	{
910	struct ev_periodic *w = periodics [0];	1050	struct ev_periodic *w = periodics [0];
911		1051
912	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1052	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
913		1053
914	/* first reschedule or stop timer */	1054	/* first reschedule or stop timer */
915	if (w->interval)	1055	if (w->reschedule_cb)
916	{	1056	{
		1057	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1058	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1059	downheap ((WT *)periodics, periodiccnt, 0);
		1060	}
		1061	else if (w->interval)
		1062	{
917	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1063	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
918	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1064	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
919	downheap ((WT *)periodics, periodiccnt, 0);	1065	downheap ((WT *)periodics, periodiccnt, 0);
920	}	1066	}
921	else	1067	else
922	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1068	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
923		1069
924	event (EV_A_ (W)w, EV_PERIODIC);	1070	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
925	}	1071	}
926	}	1072	}
927		1073
928	static void	1074	static void
929	periodics_reschedule (EV_P)	1075	periodics_reschedule (EV_P)
…		…
933	/* adjust periodics after time jump */	1079	/* adjust periodics after time jump */
934	for (i = 0; i < periodiccnt; ++i)	1080	for (i = 0; i < periodiccnt; ++i)
935	{	1081	{
936	struct ev_periodic *w = periodics [i];	1082	struct ev_periodic *w = periodics [i];
937		1083
		1084	if (w->reschedule_cb)
		1085	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
938	if (w->interval)	1086	else if (w->interval)
939	{
940	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1087	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
941
942	if (fabs (diff) >= 1e-4)
943	{
944	ev_periodic_stop (EV_A_ w);
945	ev_periodic_start (EV_A_ w);
946
947	i = 0; /* restart loop, inefficient, but time jumps should be rare */
948	}
949	}
950	}	1088	}
		1089
		1090	/* now rebuild the heap */
		1091	for (i = periodiccnt >> 1; i--; )
		1092	downheap ((WT *)periodics, periodiccnt, i);
951	}	1093	}
		1094	#endif
952		1095
953	inline int	1096	inline int
954	time_update_monotonic (EV_P)	1097	time_update_monotonic (EV_P)
955	{	1098	{
956	mn_now = get_clock ();	1099	mn_now = get_clock ();
957		1100
958	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1101	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
959	{	1102	{
960	rt_now = rtmn_diff + mn_now;	1103	ev_rt_now = rtmn_diff + mn_now;
961	return 0;	1104	return 0;
962	}	1105	}
963	else	1106	else
964	{	1107	{
965	now_floor = mn_now;	1108	now_floor = mn_now;
966	rt_now = ev_time ();	1109	ev_rt_now = ev_time ();
967	return 1;	1110	return 1;
968	}	1111	}
969	}	1112	}
970		1113
971	static void	1114	static void
…		…
980	{	1123	{
981	ev_tstamp odiff = rtmn_diff;	1124	ev_tstamp odiff = rtmn_diff;
982		1125
983	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1126	for (i = 4; --i; ) /* loop a few times, before making important decisions */
984	{	1127	{
985	rtmn_diff = rt_now - mn_now;	1128	rtmn_diff = ev_rt_now - mn_now;
986		1129
987	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1130	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
988	return; /* all is well */	1131	return; /* all is well */
989		1132
990	rt_now = ev_time ();	1133	ev_rt_now = ev_time ();
991	mn_now = get_clock ();	1134	mn_now = get_clock ();
992	now_floor = mn_now;	1135	now_floor = mn_now;
993	}	1136	}
994		1137
		1138	# if EV_PERIODICS
995	periodics_reschedule (EV_A);	1139	periodics_reschedule (EV_A);
		1140	# endif
996	/* no timer adjustment, as the monotonic clock doesn't jump */	1141	/* no timer adjustment, as the monotonic clock doesn't jump */
997	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1142	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
998	}	1143	}
999	}	1144	}
1000	else	1145	else
1001	#endif	1146	#endif
1002	{	1147	{
1003	rt_now = ev_time ();	1148	ev_rt_now = ev_time ();
1004		1149
1005	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1150	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1006	{	1151	{
		1152	#if EV_PERIODICS
1007	periodics_reschedule (EV_A);	1153	periodics_reschedule (EV_A);
		1154	#endif
1008		1155
1009	/* adjust timers. this is easy, as the offset is the same for all */	1156	/* adjust timers. this is easy, as the offset is the same for all */
1010	for (i = 0; i < timercnt; ++i)	1157	for (i = 0; i < timercnt; ++i)
1011	((WT)timers [i])->at += rt_now - mn_now;	1158	((WT)timers [i])->at += ev_rt_now - mn_now;
1012	}	1159	}
1013		1160
1014	mn_now = rt_now;	1161	mn_now = ev_rt_now;
1015	}	1162	}
1016	}	1163	}
1017		1164
1018	void	1165	void
1019	ev_ref (EV_P)	1166	ev_ref (EV_P)
…		…
1033	ev_loop (EV_P_ int flags)	1180	ev_loop (EV_P_ int flags)
1034	{	1181	{
1035	double block;	1182	double block;
1036	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1183	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
1037		1184
1038	do	1185	while (activecnt)
1039	{	1186	{
1040	/* queue check watchers (and execute them) */	1187	/* queue check watchers (and execute them) */
1041	if (expect_false (preparecnt))	1188	if (expect_false (preparecnt))
1042	{	1189	{
1043	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1190	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1044	call_pending (EV_A);	1191	call_pending (EV_A);
1045	}	1192	}
1046		1193
		1194	/* we might have forked, so reify kernel state if necessary */
		1195	if (expect_false (postfork))
		1196	loop_fork (EV_A);
		1197
1047	/* update fd-related kernel structures */	1198	/* update fd-related kernel structures */
1048	fd_reify (EV_A);	1199	fd_reify (EV_A);
1049		1200
1050	/* calculate blocking time */	1201	/* calculate blocking time */
1051		1202
1052	/* we only need this for !monotonic clockor timers, but as we basically	1203	/* we only need this for !monotonic clock or timers, but as we basically
1053	always have timers, we just calculate it always */	1204	always have timers, we just calculate it always */
1054	#if EV_USE_MONOTONIC	1205	#if EV_USE_MONOTONIC
1055	if (expect_true (have_monotonic))	1206	if (expect_true (have_monotonic))
1056	time_update_monotonic (EV_A);	1207	time_update_monotonic (EV_A);
1057	else	1208	else
1058	#endif	1209	#endif
1059	{	1210	{
1060	rt_now = ev_time ();	1211	ev_rt_now = ev_time ();
1061	mn_now = rt_now;	1212	mn_now = ev_rt_now;
1062	}	1213	}
1063		1214
1064	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1215	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1065	block = 0.;	1216	block = 0.;
1066	else	1217	else
…		…
1071	{	1222	{
1072	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1223	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
1073	if (block > to) block = to;	1224	if (block > to) block = to;
1074	}	1225	}
1075		1226
		1227	#if EV_PERIODICS
1076	if (periodiccnt)	1228	if (periodiccnt)
1077	{	1229	{
1078	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1230	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
1079	if (block > to) block = to;	1231	if (block > to) block = to;
1080	}	1232	}
		1233	#endif
1081		1234
1082	if (block < 0.) block = 0.;	1235	if (block < 0.) block = 0.;
1083	}	1236	}
1084		1237
1085	method_poll (EV_A_ block);	1238	method_poll (EV_A_ block);
1086		1239
1087	/* update rt_now, do magic */	1240	/* update ev_rt_now, do magic */
1088	time_update (EV_A);	1241	time_update (EV_A);
1089		1242
1090	/* queue pending timers and reschedule them */	1243	/* queue pending timers and reschedule them */
1091	timers_reify (EV_A); /* relative timers called last */	1244	timers_reify (EV_A); /* relative timers called last */
		1245	#if EV_PERIODICS
1092	periodics_reify (EV_A); /* absolute timers called first */	1246	periodics_reify (EV_A); /* absolute timers called first */
		1247	#endif
1093		1248
1094	/* queue idle watchers unless io or timers are pending */	1249	/* queue idle watchers unless io or timers are pending */
1095	if (!pendingcnt)	1250	if (idlecnt && !any_pending (EV_A))
1096	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1251	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1097		1252
1098	/* queue check watchers, to be executed first */	1253	/* queue check watchers, to be executed first */
1099	if (checkcnt)	1254	if (checkcnt)
1100	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1255	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1101		1256
1102	call_pending (EV_A);	1257	call_pending (EV_A);
		1258
		1259	if (loop_done)
		1260	break;
1103	}	1261	}
1104	while (activecnt && !loop_done);
1105		1262
1106	if (loop_done != 2)	1263	if (loop_done != 2)
1107	loop_done = 0;	1264	loop_done = 0;
1108	}	1265	}
1109		1266
…		…
1175	return;	1332	return;
1176		1333
1177	assert (("ev_io_start called with negative fd", fd >= 0));	1334	assert (("ev_io_start called with negative fd", fd >= 0));
1178		1335
1179	ev_start (EV_A_ (W)w, 1);	1336	ev_start (EV_A_ (W)w, 1);
1180	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1337	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1181	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1338	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1182		1339
1183	fd_change (EV_A_ fd);	1340	fd_change (EV_A_ fd);
1184	}	1341	}
1185		1342
…		…
1188	{	1345	{
1189	ev_clear_pending (EV_A_ (W)w);	1346	ev_clear_pending (EV_A_ (W)w);
1190	if (!ev_is_active (w))	1347	if (!ev_is_active (w))
1191	return;	1348	return;
1192		1349
		1350	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1351
1193	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1352	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1194	ev_stop (EV_A_ (W)w);	1353	ev_stop (EV_A_ (W)w);
1195		1354
1196	fd_change (EV_A_ w->fd);	1355	fd_change (EV_A_ w->fd);
1197	}	1356	}
…		…
1205	((WT)w)->at += mn_now;	1364	((WT)w)->at += mn_now;
1206		1365
1207	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1366	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1208		1367
1209	ev_start (EV_A_ (W)w, ++timercnt);	1368	ev_start (EV_A_ (W)w, ++timercnt);
1210	array_needsize (timers, timermax, timercnt, );	1369	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1211	timers [timercnt - 1] = w;	1370	timers [timercnt - 1] = w;
1212	upheap ((WT *)timers, timercnt - 1);	1371	upheap ((WT *)timers, timercnt - 1);
1213		1372
1214	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1373	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1215	}	1374	}
…		…
1224	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1383	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1225		1384
1226	if (((W)w)->active < timercnt--)	1385	if (((W)w)->active < timercnt--)
1227	{	1386	{
1228	timers [((W)w)->active - 1] = timers [timercnt];	1387	timers [((W)w)->active - 1] = timers [timercnt];
1229	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1388	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1230	}	1389	}
1231		1390
1232	((WT)w)->at = w->repeat;	1391	((WT)w)->at -= mn_now;
1233		1392
1234	ev_stop (EV_A_ (W)w);	1393	ev_stop (EV_A_ (W)w);
1235	}	1394	}
1236		1395
1237	void	1396	void
…		…
1240	if (ev_is_active (w))	1399	if (ev_is_active (w))
1241	{	1400	{
1242	if (w->repeat)	1401	if (w->repeat)
1243	{	1402	{
1244	((WT)w)->at = mn_now + w->repeat;	1403	((WT)w)->at = mn_now + w->repeat;
1245	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1404	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1246	}	1405	}
1247	else	1406	else
1248	ev_timer_stop (EV_A_ w);	1407	ev_timer_stop (EV_A_ w);
1249	}	1408	}
1250	else if (w->repeat)	1409	else if (w->repeat)
		1410	{
		1411	w->at = w->repeat;
1251	ev_timer_start (EV_A_ w);	1412	ev_timer_start (EV_A_ w);
		1413	}
1252	}	1414	}
1253		1415
		1416	#if EV_PERIODICS
1254	void	1417	void
1255	ev_periodic_start (EV_P_ struct ev_periodic *w)	1418	ev_periodic_start (EV_P_ struct ev_periodic *w)
1256	{	1419	{
1257	if (ev_is_active (w))	1420	if (ev_is_active (w))
1258	return;	1421	return;
1259		1422
		1423	if (w->reschedule_cb)
		1424	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1425	else if (w->interval)
		1426	{
1260	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1427	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1261
1262	/* this formula differs from the one in periodic_reify because we do not always round up */	1428	/* this formula differs from the one in periodic_reify because we do not always round up */
1263	if (w->interval)
1264	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1429	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1430	}
1265		1431
1266	ev_start (EV_A_ (W)w, ++periodiccnt);	1432	ev_start (EV_A_ (W)w, ++periodiccnt);
1267	array_needsize (periodics, periodicmax, periodiccnt, );	1433	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1268	periodics [periodiccnt - 1] = w;	1434	periodics [periodiccnt - 1] = w;
1269	upheap ((WT *)periodics, periodiccnt - 1);	1435	upheap ((WT *)periodics, periodiccnt - 1);
1270		1436
1271	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1437	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1272	}	1438	}
…		…
1281	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1447	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1282		1448
1283	if (((W)w)->active < periodiccnt--)	1449	if (((W)w)->active < periodiccnt--)
1284	{	1450	{
1285	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1451	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1286	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1452	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1287	}	1453	}
1288		1454
1289	ev_stop (EV_A_ (W)w);	1455	ev_stop (EV_A_ (W)w);
1290	}	1456	}
1291		1457
1292	void	1458	void
		1459	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1460	{
		1461	/* TODO: use adjustheap and recalculation */
		1462	ev_periodic_stop (EV_A_ w);
		1463	ev_periodic_start (EV_A_ w);
		1464	}
		1465	#endif
		1466
		1467	void
1293	ev_idle_start (EV_P_ struct ev_idle *w)	1468	ev_idle_start (EV_P_ struct ev_idle *w)
1294	{	1469	{
1295	if (ev_is_active (w))	1470	if (ev_is_active (w))
1296	return;	1471	return;
1297		1472
1298	ev_start (EV_A_ (W)w, ++idlecnt);	1473	ev_start (EV_A_ (W)w, ++idlecnt);
1299	array_needsize (idles, idlemax, idlecnt, );	1474	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1300	idles [idlecnt - 1] = w;	1475	idles [idlecnt - 1] = w;
1301	}	1476	}
1302		1477
1303	void	1478	void
1304	ev_idle_stop (EV_P_ struct ev_idle *w)	1479	ev_idle_stop (EV_P_ struct ev_idle *w)
1305	{	1480	{
1306	ev_clear_pending (EV_A_ (W)w);	1481	ev_clear_pending (EV_A_ (W)w);
1307	if (ev_is_active (w))	1482	if (!ev_is_active (w))
1308	return;	1483	return;
1309		1484
1310	idles [((W)w)->active - 1] = idles [--idlecnt];	1485	idles [((W)w)->active - 1] = idles [--idlecnt];
1311	ev_stop (EV_A_ (W)w);	1486	ev_stop (EV_A_ (W)w);
1312	}	1487	}
…		…
1316	{	1491	{
1317	if (ev_is_active (w))	1492	if (ev_is_active (w))
1318	return;	1493	return;
1319		1494
1320	ev_start (EV_A_ (W)w, ++preparecnt);	1495	ev_start (EV_A_ (W)w, ++preparecnt);
1321	array_needsize (prepares, preparemax, preparecnt, );	1496	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1322	prepares [preparecnt - 1] = w;	1497	prepares [preparecnt - 1] = w;
1323	}	1498	}
1324		1499
1325	void	1500	void
1326	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1501	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1327	{	1502	{
1328	ev_clear_pending (EV_A_ (W)w);	1503	ev_clear_pending (EV_A_ (W)w);
1329	if (ev_is_active (w))	1504	if (!ev_is_active (w))
1330	return;	1505	return;
1331		1506
1332	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1507	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1333	ev_stop (EV_A_ (W)w);	1508	ev_stop (EV_A_ (W)w);
1334	}	1509	}
…		…
1338	{	1513	{
1339	if (ev_is_active (w))	1514	if (ev_is_active (w))
1340	return;	1515	return;
1341		1516
1342	ev_start (EV_A_ (W)w, ++checkcnt);	1517	ev_start (EV_A_ (W)w, ++checkcnt);
1343	array_needsize (checks, checkmax, checkcnt, );	1518	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1344	checks [checkcnt - 1] = w;	1519	checks [checkcnt - 1] = w;
1345	}	1520	}
1346		1521
1347	void	1522	void
1348	ev_check_stop (EV_P_ struct ev_check *w)	1523	ev_check_stop (EV_P_ struct ev_check *w)
1349	{	1524	{
1350	ev_clear_pending (EV_A_ (W)w);	1525	ev_clear_pending (EV_A_ (W)w);
1351	if (ev_is_active (w))	1526	if (!ev_is_active (w))
1352	return;	1527	return;
1353		1528
1354	checks [((W)w)->active - 1] = checks [--checkcnt];	1529	checks [((W)w)->active - 1] = checks [--checkcnt];
1355	ev_stop (EV_A_ (W)w);	1530	ev_stop (EV_A_ (W)w);
1356	}	1531	}
…		…
1361		1536
1362	void	1537	void
1363	ev_signal_start (EV_P_ struct ev_signal *w)	1538	ev_signal_start (EV_P_ struct ev_signal *w)
1364	{	1539	{
1365	#if EV_MULTIPLICITY	1540	#if EV_MULTIPLICITY
1366	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1541	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1367	#endif	1542	#endif
1368	if (ev_is_active (w))	1543	if (ev_is_active (w))
1369	return;	1544	return;
1370		1545
1371	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1546	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1372		1547
1373	ev_start (EV_A_ (W)w, 1);	1548	ev_start (EV_A_ (W)w, 1);
1374	array_needsize (signals, signalmax, w->signum, signals_init);	1549	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1375	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1550	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1376		1551
1377	if (!((WL)w)->next)	1552	if (!((WL)w)->next)
1378	{	1553	{
1379	#if WIN32	1554	#if _WIN32
1380	signal (w->signum, sighandler);	1555	signal (w->signum, sighandler);
1381	#else	1556	#else
1382	struct sigaction sa;	1557	struct sigaction sa;
1383	sa.sa_handler = sighandler;	1558	sa.sa_handler = sighandler;
1384	sigfillset (&sa.sa_mask);	1559	sigfillset (&sa.sa_mask);
…		…
1404		1579
1405	void	1580	void
1406	ev_child_start (EV_P_ struct ev_child *w)	1581	ev_child_start (EV_P_ struct ev_child *w)
1407	{	1582	{
1408	#if EV_MULTIPLICITY	1583	#if EV_MULTIPLICITY
1409	assert (("child watchers are only supported in the default loop", loop == default_loop));	1584	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1410	#endif	1585	#endif
1411	if (ev_is_active (w))	1586	if (ev_is_active (w))
1412	return;	1587	return;
1413		1588
1414	ev_start (EV_A_ (W)w, 1);	1589	ev_start (EV_A_ (W)w, 1);
…		…
1417		1592
1418	void	1593	void
1419	ev_child_stop (EV_P_ struct ev_child *w)	1594	ev_child_stop (EV_P_ struct ev_child *w)
1420	{	1595	{
1421	ev_clear_pending (EV_A_ (W)w);	1596	ev_clear_pending (EV_A_ (W)w);
1422	if (ev_is_active (w))	1597	if (!ev_is_active (w))
1423	return;	1598	return;
1424		1599
1425	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1600	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1426	ev_stop (EV_A_ (W)w);	1601	ev_stop (EV_A_ (W)w);
1427	}	1602	}
…		…
1462	}	1637	}
1463		1638
1464	void	1639	void
1465	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1640	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1466	{	1641	{
1467	struct ev_once *once = ev_malloc (sizeof (struct ev_once));	1642	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1468		1643
1469	if (!once)	1644	if (!once)
1470	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1645	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1471	else	1646	else
1472	{	1647	{
1473	once->cb = cb;	1648	once->cb = cb;
1474	once->arg = arg;	1649	once->arg = arg;
1475		1650
1476	ev_watcher_init (&once->io, once_cb_io);	1651	ev_init (&once->io, once_cb_io);
1477	if (fd >= 0)	1652	if (fd >= 0)
1478	{	1653	{
1479	ev_io_set (&once->io, fd, events);	1654	ev_io_set (&once->io, fd, events);
1480	ev_io_start (EV_A_ &once->io);	1655	ev_io_start (EV_A_ &once->io);
1481	}	1656	}
1482		1657
1483	ev_watcher_init (&once->to, once_cb_to);	1658	ev_init (&once->to, once_cb_to);
1484	if (timeout >= 0.)	1659	if (timeout >= 0.)
1485	{	1660	{
1486	ev_timer_set (&once->to, timeout, 0.);	1661	ev_timer_set (&once->to, timeout, 0.);
1487	ev_timer_start (EV_A_ &once->to);	1662	ev_timer_start (EV_A_ &once->to);
1488	}	1663	}
1489	}	1664	}
1490	}	1665	}
1491		1666
		1667	#ifdef __cplusplus
		1668	}
		1669	#endif
		1670

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Comparing libev/ev.c (file contents): Revision 1.69 by root, Tue Nov 6 00:10:04 2007 UTC vs. Revision 1.122 by root, Sat Nov 17 02:00:48 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.69 by root, Tue Nov 6 00:10:04 2007 UTC vs.
Revision 1.122 by root, Sat Nov 17 02:00:48 2007 UTC