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

Comparing libev/ev.c (file contents):
Revision 1.75 by root, Tue Nov 6 19:29:20 2007 UTC vs.
Revision 1.123 by root, Sat Nov 17 02:23:54 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
		62	# endif
		63
		64	# if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT)
		65	# define EV_USE_PORT 1
53	# endif	66	# endif
54		67
55	#endif	68	#endif
56		69
57	#include <math.h>	70	#include <math.h>
…		…
66	#include <sys/types.h>	79	#include <sys/types.h>
67	#include <time.h>	80	#include <time.h>
68		81
69	#include <signal.h>	82	#include <signal.h>
70		83
71	#ifndef WIN32	84	#ifndef _WIN32
72	# include <unistd.h>	85	# include <unistd.h>
73	# include <sys/time.h>	86	# include <sys/time.h>
74	# 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
75	#endif	93	# endif
		94	#endif
		95
76	/**/	96	/**/
77		97
78	#ifndef EV_USE_MONOTONIC	98	#ifndef EV_USE_MONOTONIC
79	# 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
80	#endif	104	#endif
81		105
82	#ifndef EV_USE_SELECT	106	#ifndef EV_USE_SELECT
83	# define EV_USE_SELECT 1	107	# define EV_USE_SELECT 1
84	#endif	108	#endif
85		109
86	#ifndef EV_USE_POLL	110	#ifndef EV_USE_POLL
87	# 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
88	#endif	116	#endif
89		117
90	#ifndef EV_USE_EPOLL	118	#ifndef EV_USE_EPOLL
91	# define EV_USE_EPOLL 0	119	# define EV_USE_EPOLL 0
92	#endif	120	#endif
93		121
94	#ifndef EV_USE_KQUEUE	122	#ifndef EV_USE_KQUEUE
95	# define EV_USE_KQUEUE 0	123	# define EV_USE_KQUEUE 0
96	#endif	124	#endif
97		125
98	#ifndef EV_USE_WIN32
99	# ifdef WIN32
100	# define EV_USE_WIN32 0 /* it does not exist, use select */
101	# undef EV_USE_SELECT
102	# define EV_USE_SELECT 1
103	# else
104	# define EV_USE_WIN32 0
105	# endif
106	#endif
107
108	#ifndef EV_USE_REALTIME	126	#ifndef EV_USE_PORT
109	# define EV_USE_REALTIME 1	127	# define EV_USE_PORT 0
110	#endif	128	#endif
111		129
112	/**/	130	/**/
		131
		132	/* darwin simply cannot be helped */
		133	#ifdef __APPLE__
		134	# undef EV_USE_POLL
		135	# undef EV_USE_KQUEUE
		136	#endif
113		137
114	#ifndef CLOCK_MONOTONIC	138	#ifndef CLOCK_MONOTONIC
115	# undef EV_USE_MONOTONIC	139	# undef EV_USE_MONOTONIC
116	# define EV_USE_MONOTONIC 0	140	# define EV_USE_MONOTONIC 0
117	#endif	141	#endif
…		…
119	#ifndef CLOCK_REALTIME	143	#ifndef CLOCK_REALTIME
120	# undef EV_USE_REALTIME	144	# undef EV_USE_REALTIME
121	# define EV_USE_REALTIME 0	145	# define EV_USE_REALTIME 0
122	#endif	146	#endif
123		147
		148	#if EV_SELECT_IS_WINSOCKET
		149	# include <winsock.h>
		150	#endif
		151
124	/**/	152	/**/
125		153
126	#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) */
127	#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) */
128	#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 */
129	/#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 */
130		158
		159	#ifdef EV_H
		160	# include EV_H
		161	#else
131	#include "ev.h"	162	# include "ev.h"
		163	#endif
132		164
133	#if __GNUC__ >= 3	165	#if __GNUC__ >= 3
134	# define expect(expr,value) __builtin_expect ((expr),(value))	166	# define expect(expr,value) __builtin_expect ((expr),(value))
135	# define inline inline	167	# define inline static inline
136	#else	168	#else
137	# define expect(expr,value) (expr)	169	# define expect(expr,value) (expr)
138	# define inline static	170	# define inline static
139	#endif	171	#endif
140		172
…		…
142	#define expect_true(expr) expect ((expr) != 0, 1)	174	#define expect_true(expr) expect ((expr) != 0, 1)
143		175
144	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	176	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
145	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	177	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
146		178
		179	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		180	#define EMPTY2(a,b) /* used to suppress some warnings */
		181
147	typedef struct ev_watcher *W;	182	typedef struct ev_watcher *W;
148	typedef struct ev_watcher_list *WL;	183	typedef struct ev_watcher_list *WL;
149	typedef struct ev_watcher_time *WT;	184	typedef struct ev_watcher_time *WT;
150		185
151	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	186	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
152		187
		188	#ifdef _WIN32
153	#include "ev_win32.c"	189	# include "ev_win32.c"
		190	#endif
154		191
155	/*****************************************************************************/	192	/*****************************************************************************/
156		193
157	static void (syserr_cb)(const char msg);	194	static void (syserr_cb)(const char msg);
158		195
…		…
205	typedef struct	242	typedef struct
206	{	243	{
207	WL head;	244	WL head;
208	unsigned char events;	245	unsigned char events;
209	unsigned char reify;	246	unsigned char reify;
		247	#if EV_SELECT_IS_WINSOCKET
		248	SOCKET handle;
		249	#endif
210	} ANFD;	250	} ANFD;
211		251
212	typedef struct	252	typedef struct
213	{	253	{
214	W w;	254	W w;
215	int events;	255	int events;
216	} ANPENDING;	256	} ANPENDING;
217		257
218	#if EV_MULTIPLICITY	258	#if EV_MULTIPLICITY
219		259
220	struct ev_loop	260	struct ev_loop
221	{	261	{
		262	ev_tstamp ev_rt_now;
		263	#define ev_rt_now ((loop)->ev_rt_now)
222	# define VAR(name,decl) decl;	264	#define VAR(name,decl) decl;
223	# include "ev_vars.h"	265	#include "ev_vars.h"
224	};
225	# undef VAR	266	#undef VAR
		267	};
226	# 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;
227		272
228	#else	273	#else
229		274
		275	ev_tstamp ev_rt_now;
230	# define VAR(name,decl) static decl;	276	#define VAR(name,decl) static decl;
231	# include "ev_vars.h"	277	#include "ev_vars.h"
232	# undef VAR	278	#undef VAR
		279
		280	static int ev_default_loop_ptr;
233		281
234	#endif	282	#endif
235		283
236	/*****************************************************************************/	284	/*****************************************************************************/
237		285
238	inline ev_tstamp	286	ev_tstamp
239	ev_time (void)	287	ev_time (void)
240	{	288	{
241	#if EV_USE_REALTIME	289	#if EV_USE_REALTIME
242	struct timespec ts;	290	struct timespec ts;
243	clock_gettime (CLOCK_REALTIME, &ts);	291	clock_gettime (CLOCK_REALTIME, &ts);
…		…
262	#endif	310	#endif
263		311
264	return ev_time ();	312	return ev_time ();
265	}	313	}
266		314
		315	#if EV_MULTIPLICITY
267	ev_tstamp	316	ev_tstamp
268	ev_now (EV_P)	317	ev_now (EV_P)
269	{	318	{
270	return rt_now;	319	return ev_rt_now;
271	}	320	}
		321	#endif
272		322
273	#define array_roundsize(type,n) ((n) \| 4 & ~3)	323	#define array_roundsize(type,n) (((n) \| 4) & ~3)
274		324
275	#define array_needsize(type,base,cur,cnt,init) \	325	#define array_needsize(type,base,cur,cnt,init) \
276	if (expect_false ((cnt) > cur)) \	326	if (expect_false ((cnt) > cur)) \
277	{ \	327	{ \
278	int newcnt = cur; \	328	int newcnt = cur; \
…		…
293	stem ## max = array_roundsize (stem ## cnt >> 1); \	343	stem ## max = array_roundsize (stem ## cnt >> 1); \
294	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\	344	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
295	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	345	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
296	}	346	}
297		347
298	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
299	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
300	#define array_free_microshit(stem) \
301	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
302
303	#define array_free(stem, idx) \	348	#define array_free(stem, idx) \
304	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;
305		350
306	/*****************************************************************************/	351	/*****************************************************************************/
307		352
…		…
316		361
317	++base;	362	++base;
318	}	363	}
319	}	364	}
320		365
321	static void	366	void
322	event (EV_P_ W w, int events)	367	ev_feed_event (EV_P_ void *w, int revents)
323	{	368	{
324	if (w->pending)	369	W w_ = (W)w;
		370
		371	if (expect_false (w_->pending))
325	{	372	{
326	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	373	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
327	return;	374	return;
328	}	375	}
329		376
330	w->pending = ++pendingcnt [ABSPRI (w)];	377	w_->pending = ++pendingcnt [ABSPRI (w_)];
331	array_needsize (ANPENDING, pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));	378	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
332	pendings [ABSPRI (w)][w->pending - 1].w = w;	379	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
333	pendings [ABSPRI (w)][w->pending - 1].events = events;	380	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
334	}	381	}
335		382
336	static void	383	static void
337	queue_events (EV_P_ W *events, int eventcnt, int type)	384	queue_events (EV_P_ W *events, int eventcnt, int type)
338	{	385	{
339	int i;	386	int i;
340		387
341	for (i = 0; i < eventcnt; ++i)	388	for (i = 0; i < eventcnt; ++i)
342	event (EV_A_ events [i], type);	389	ev_feed_event (EV_A_ events [i], type);
343	}	390	}
344		391
345	static void	392	inline void
346	fd_event (EV_P_ int fd, int events)	393	fd_event (EV_P_ int fd, int revents)
347	{	394	{
348	ANFD *anfd = anfds + fd;	395	ANFD *anfd = anfds + fd;
349	struct ev_io *w;	396	struct ev_io *w;
350		397
351	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)
352	{	399	{
353	int ev = w->events & events;	400	int ev = w->events & revents;
354		401
355	if (ev)	402	if (ev)
356	event (EV_A_ (W)w, ev);	403	ev_feed_event (EV_A_ (W)w, ev);
357	}	404	}
		405	}
		406
		407	void
		408	ev_feed_fd_event (EV_P_ int fd, int revents)
		409	{
		410	fd_event (EV_A_ fd, revents);
358	}	411	}
359		412
360	/*****************************************************************************/	413	/*****************************************************************************/
361		414
362	static void	415	inline void
363	fd_reify (EV_P)	416	fd_reify (EV_P)
364	{	417	{
365	int i;	418	int i;
366		419
367	for (i = 0; i < fdchangecnt; ++i)	420	for (i = 0; i < fdchangecnt; ++i)
…		…
373	int events = 0;	426	int events = 0;
374		427
375	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)
376	events \|= w->events;	429	events \|= w->events;
377		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
378	anfd->reify = 0;	440	anfd->reify = 0;
379		441
380	method_modify (EV_A_ fd, anfd->events, events);	442	method_modify (EV_A_ fd, anfd->events, events);
381	anfd->events = events;	443	anfd->events = events;
382	}	444	}
…		…
385	}	447	}
386		448
387	static void	449	static void
388	fd_change (EV_P_ int fd)	450	fd_change (EV_P_ int fd)
389	{	451	{
390	if (anfds [fd].reify)	452	if (expect_false (anfds [fd].reify))
391	return;	453	return;
392		454
393	anfds [fd].reify = 1;	455	anfds [fd].reify = 1;
394		456
395	++fdchangecnt;	457	++fdchangecnt;
396	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	458	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
397	fdchanges [fdchangecnt - 1] = fd;	459	fdchanges [fdchangecnt - 1] = fd;
398	}	460	}
399		461
400	static void	462	static void
401	fd_kill (EV_P_ int fd)	463	fd_kill (EV_P_ int fd)
…		…
403	struct ev_io *w;	465	struct ev_io *w;
404		466
405	while ((w = (struct ev_io *)anfds [fd].head))	467	while ((w = (struct ev_io *)anfds [fd].head))
406	{	468	{
407	ev_io_stop (EV_A_ w);	469	ev_io_stop (EV_A_ w);
408	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);
409	}	471	}
410	}	472	}
411		473
412	static int	474	inline int
413	fd_valid (int fd)	475	fd_valid (int fd)
414	{	476	{
415	#ifdef WIN32	477	#ifdef _WIN32
416	return !!win32_get_osfhandle (fd);	478	return _get_osfhandle (fd) != -1;
417	#else	479	#else
418	return fcntl (fd, F_GETFD) != -1;	480	return fcntl (fd, F_GETFD) != -1;
419	#endif	481	#endif
420	}	482	}
421		483
…		…
501		563
502	heap [k] = w;	564	heap [k] = w;
503	((W)heap [k])->active = k + 1;	565	((W)heap [k])->active = k + 1;
504	}	566	}
505		567
		568	inline void
		569	adjustheap (WT *heap, int N, int k)
		570	{
		571	upheap (heap, k);
		572	downheap (heap, N, k);
		573	}
		574
506	/*****************************************************************************/	575	/*****************************************************************************/
507		576
508	typedef struct	577	typedef struct
509	{	578	{
510	WL head;	579	WL head;
…		…
531	}	600	}
532		601
533	static void	602	static void
534	sighandler (int signum)	603	sighandler (int signum)
535	{	604	{
536	#if WIN32	605	#if _WIN32
537	signal (signum, sighandler);	606	signal (signum, sighandler);
538	#endif	607	#endif
539		608
540	signals [signum - 1].gotsig = 1;	609	signals [signum - 1].gotsig = 1;
541		610
542	if (!gotsig)	611	if (!gotsig)
543	{	612	{
544	int old_errno = errno;	613	int old_errno = errno;
545	gotsig = 1;	614	gotsig = 1;
546	#ifdef WIN32
547	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
548	#else
549	write (sigpipe [1], &signum, 1);	615	write (sigpipe [1], &signum, 1);
550	#endif
551	errno = old_errno;	616	errno = old_errno;
552	}	617	}
553	}	618	}
554		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
555	static void	640	static void
556	sigcb (EV_P_ struct ev_io *iow, int revents)	641	sigcb (EV_P_ struct ev_io *iow, int revents)
557	{	642	{
558	WL w;
559	int signum;	643	int signum;
560		644
561	#ifdef WIN32
562	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
563	#else
564	read (sigpipe [0], &revents, 1);	645	read (sigpipe [0], &revents, 1);
565	#endif
566	gotsig = 0;	646	gotsig = 0;
567		647
568	for (signum = signalmax; signum--; )	648	for (signum = signalmax; signum--; )
569	if (signals [signum].gotsig)	649	if (signals [signum].gotsig)
570	{	650	ev_feed_signal_event (EV_A_ signum + 1);
571	signals [signum].gotsig = 0;	651	}
572		652
573	for (w = signals [signum].head; w; w = w->next)	653	static void
574	event (EV_A_ (W)w, EV_SIGNAL);	654	fd_intern (int fd)
575	}	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
576	}	663	}
577		664
578	static void	665	static void
579	siginit (EV_P)	666	siginit (EV_P)
580	{	667	{
581	#ifndef WIN32	668	fd_intern (sigpipe [0]);
582	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	669	fd_intern (sigpipe [1]);
583	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
584
585	/* rather than sort out wether we really need nb, set it */
586	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
587	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
588	#endif
589		670
590	ev_io_set (&sigev, sigpipe [0], EV_READ);	671	ev_io_set (&sigev, sigpipe [0], EV_READ);
591	ev_io_start (EV_A_ &sigev);	672	ev_io_start (EV_A_ &sigev);
592	ev_unref (EV_A); /* child watcher should not keep loop alive */	673	ev_unref (EV_A); /* child watcher should not keep loop alive */
593	}	674	}
594		675
595	/*****************************************************************************/	676	/*****************************************************************************/
596		677
597	static struct ev_child *childs [PID_HASHSIZE];	678	static struct ev_child *childs [PID_HASHSIZE];
598		679
599	#ifndef WIN32	680	#ifndef _WIN32
600		681
601	static struct ev_signal childev;	682	static struct ev_signal childev;
602		683
603	#ifndef WCONTINUED	684	#ifndef WCONTINUED
604	# define WCONTINUED 0	685	# define WCONTINUED 0
…		…
613	if (w->pid == pid \|\| !w->pid)	694	if (w->pid == pid \|\| !w->pid)
614	{	695	{
615	ev_priority (w) = ev_priority (sw); /* need to do it now */	696	ev_priority (w) = ev_priority (sw); /* need to do it now */
616	w->rpid = pid;	697	w->rpid = pid;
617	w->rstatus = status;	698	w->rstatus = status;
618	event (EV_A_ (W)w, EV_CHILD);	699	ev_feed_event (EV_A_ (W)w, EV_CHILD);
619	}	700	}
620	}	701	}
621		702
622	static void	703	static void
623	childcb (EV_P_ struct ev_signal *sw, int revents)	704	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
625	int pid, status;	706	int pid, status;
626		707
627	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	708	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
628	{	709	{
629	/* 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 */
630	event (EV_A_ (W)sw, EV_SIGNAL);	711	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
631		712
632	child_reap (EV_A_ sw, pid, pid, status);	713	child_reap (EV_A_ sw, pid, pid, status);
633	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 */
634	}	715	}
635	}	716	}
636		717
637	#endif	718	#endif
638		719
639	/*****************************************************************************/	720	/*****************************************************************************/
640		721
		722	#if EV_USE_PORT
		723	# include "ev_port.c"
		724	#endif
641	#if EV_USE_KQUEUE	725	#if EV_USE_KQUEUE
642	# include "ev_kqueue.c"	726	# include "ev_kqueue.c"
643	#endif	727	#endif
644	#if EV_USE_EPOLL	728	#if EV_USE_EPOLL
645	# include "ev_epoll.c"	729	# include "ev_epoll.c"
…		…
665		749
666	/* 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 */
667	static int	751	static int
668	enable_secure (void)	752	enable_secure (void)
669	{	753	{
670	#ifdef WIN32	754	#ifdef _WIN32
671	return 0;	755	return 0;
672	#else	756	#else
673	return getuid () != geteuid ()	757	return getuid () != geteuid ()
674	\|\| getgid () != getegid ();	758	\|\| getgid () != getegid ();
675	#endif	759	#endif
676	}	760	}
677		761
678	int	762	unsigned int
679	ev_method (EV_P)	763	ev_method (EV_P)
680	{	764	{
681	return method;	765	return method;
682	}	766	}
683		767
684	static void	768	static void
685	loop_init (EV_P_ int methods)	769	loop_init (EV_P_ unsigned int flags)
686	{	770	{
687	if (!method)	771	if (!method)
688	{	772	{
689	#if EV_USE_MONOTONIC	773	#if EV_USE_MONOTONIC
690	{	774	{
…		…
692	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	776	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
693	have_monotonic = 1;	777	have_monotonic = 1;
694	}	778	}
695	#endif	779	#endif
696		780
697	rt_now = ev_time ();	781	ev_rt_now = ev_time ();
698	mn_now = get_clock ();	782	mn_now = get_clock ();
699	now_floor = mn_now;	783	now_floor = mn_now;
700	rtmn_diff = rt_now - mn_now;	784	rtmn_diff = ev_rt_now - mn_now;
701		785
702	if (methods == EVMETHOD_AUTO)	786	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
703	if (!enable_secure () && getenv ("LIBEV_METHODS"))
704	methods = atoi (getenv ("LIBEV_METHODS"));	787	flags = atoi (getenv ("LIBEV_FLAGS"));
705	else	788
706	methods = EVMETHOD_ANY;	789	if (!(flags & 0x0000ffff))
		790	flags \|= 0x0000ffff;
707		791
708	method = 0;	792	method = 0;
709	#if EV_USE_WIN32	793	#if EV_USE_PORT
710	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	794	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);
711	#endif	795	#endif
712	#if EV_USE_KQUEUE	796	#if EV_USE_KQUEUE
713	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	797	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
714	#endif	798	#endif
715	#if EV_USE_EPOLL	799	#if EV_USE_EPOLL
716	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	800	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
717	#endif	801	#endif
718	#if EV_USE_POLL	802	#if EV_USE_POLL
719	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	803	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
720	#endif	804	#endif
721	#if EV_USE_SELECT	805	#if EV_USE_SELECT
722	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	806	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
723	#endif	807	#endif
724		808
725	ev_watcher_init (&sigev, sigcb);	809	ev_init (&sigev, sigcb);
726	ev_set_priority (&sigev, EV_MAXPRI);	810	ev_set_priority (&sigev, EV_MAXPRI);
727	}	811	}
728	}	812	}
729		813
730	void	814	void
731	loop_destroy (EV_P)	815	loop_destroy (EV_P)
732	{	816	{
733	int i;	817	int i;
734		818
735	#if EV_USE_WIN32	819	#if EV_USE_PORT
736	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	820	if (method == EVMETHOD_PORT ) port_destroy (EV_A);
737	#endif	821	#endif
738	#if EV_USE_KQUEUE	822	#if EV_USE_KQUEUE
739	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	823	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
740	#endif	824	#endif
741	#if EV_USE_EPOLL	825	#if EV_USE_EPOLL
…		…
750		834
751	for (i = NUMPRI; i--; )	835	for (i = NUMPRI; i--; )
752	array_free (pending, [i]);	836	array_free (pending, [i]);
753		837
754	/* have to use the microsoft-never-gets-it-right macro */	838	/* have to use the microsoft-never-gets-it-right macro */
755	array_free_microshit (fdchange);	839	array_free (fdchange, EMPTY0);
756	array_free_microshit (timer);	840	array_free (timer, EMPTY0);
757	array_free_microshit (periodic);	841	#if EV_PERIODICS
758	array_free_microshit (idle);	842	array_free (periodic, EMPTY0);
759	array_free_microshit (prepare);	843	#endif
760	array_free_microshit (check);	844	array_free (idle, EMPTY0);
		845	array_free (prepare, EMPTY0);
		846	array_free (check, EMPTY0);
761		847
762	method = 0;	848	method = 0;
763	}	849	}
764		850
765	static void	851	static void
766	loop_fork (EV_P)	852	loop_fork (EV_P)
767	{	853	{
		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
768	#if EV_USE_EPOLL	860	#if EV_USE_EPOLL
769	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	861	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
770	#endif
771	#if EV_USE_KQUEUE
772	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
773	#endif	862	#endif
774		863
775	if (ev_is_active (&sigev))	864	if (ev_is_active (&sigev))
776	{	865	{
777	/* default loop */	866	/* default loop */
…		…
790	postfork = 0;	879	postfork = 0;
791	}	880	}
792		881
793	#if EV_MULTIPLICITY	882	#if EV_MULTIPLICITY
794	struct ev_loop *	883	struct ev_loop *
795	ev_loop_new (int methods)	884	ev_loop_new (unsigned int flags)
796	{	885	{
797	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));
798		887
799	memset (loop, 0, sizeof (struct ev_loop));	888	memset (loop, 0, sizeof (struct ev_loop));
800		889
801	loop_init (EV_A_ methods);	890	loop_init (EV_A_ flags);
802		891
803	if (ev_method (EV_A))	892	if (ev_method (EV_A))
804	return loop;	893	return loop;
805		894
806	return 0;	895	return 0;
…		…
820	}	909	}
821		910
822	#endif	911	#endif
823		912
824	#if EV_MULTIPLICITY	913	#if EV_MULTIPLICITY
825	struct ev_loop default_loop_struct;
826	static struct ev_loop *default_loop;
827
828	struct ev_loop *	914	struct ev_loop *
		915	ev_default_loop_ (unsigned int flags)
829	#else	916	#else
830	static int default_loop;
831
832	int	917	int
		918	ev_default_loop (unsigned int flags)
833	#endif	919	#endif
834	ev_default_loop (int methods)
835	{	920	{
836	if (sigpipe [0] == sigpipe [1])	921	if (sigpipe [0] == sigpipe [1])
837	if (pipe (sigpipe))	922	if (pipe (sigpipe))
838	return 0;	923	return 0;
839		924
840	if (!default_loop)	925	if (!ev_default_loop_ptr)
841	{	926	{
842	#if EV_MULTIPLICITY	927	#if EV_MULTIPLICITY
843	struct ev_loop *loop = default_loop = &default_loop_struct;	928	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
844	#else	929	#else
845	default_loop = 1;	930	ev_default_loop_ptr = 1;
846	#endif	931	#endif
847		932
848	loop_init (EV_A_ methods);	933	loop_init (EV_A_ flags);
849		934
850	if (ev_method (EV_A))	935	if (ev_method (EV_A))
851	{	936	{
852	siginit (EV_A);	937	siginit (EV_A);
853		938
854	#ifndef WIN32	939	#ifndef _WIN32
855	ev_signal_init (&childev, childcb, SIGCHLD);	940	ev_signal_init (&childev, childcb, SIGCHLD);
856	ev_set_priority (&childev, EV_MAXPRI);	941	ev_set_priority (&childev, EV_MAXPRI);
857	ev_signal_start (EV_A_ &childev);	942	ev_signal_start (EV_A_ &childev);
858	ev_unref (EV_A); /* child watcher should not keep loop alive */	943	ev_unref (EV_A); /* child watcher should not keep loop alive */
859	#endif	944	#endif
860	}	945	}
861	else	946	else
862	default_loop = 0;	947	ev_default_loop_ptr = 0;
863	}	948	}
864		949
865	return default_loop;	950	return ev_default_loop_ptr;
866	}	951	}
867		952
868	void	953	void
869	ev_default_destroy (void)	954	ev_default_destroy (void)
870	{	955	{
871	#if EV_MULTIPLICITY	956	#if EV_MULTIPLICITY
872	struct ev_loop *loop = default_loop;	957	struct ev_loop *loop = ev_default_loop_ptr;
873	#endif	958	#endif
874		959
875	#ifndef WIN32	960	#ifndef _WIN32
876	ev_ref (EV_A); /* child watcher */	961	ev_ref (EV_A); /* child watcher */
877	ev_signal_stop (EV_A_ &childev);	962	ev_signal_stop (EV_A_ &childev);
878	#endif	963	#endif
879		964
880	ev_ref (EV_A); /* signal watcher */	965	ev_ref (EV_A); /* signal watcher */
…		…
888		973
889	void	974	void
890	ev_default_fork (void)	975	ev_default_fork (void)
891	{	976	{
892	#if EV_MULTIPLICITY	977	#if EV_MULTIPLICITY
893	struct ev_loop *loop = default_loop;	978	struct ev_loop *loop = ev_default_loop_ptr;
894	#endif	979	#endif
895		980
896	if (method)	981	if (method)
897	postfork = 1;	982	postfork = 1;
898	}	983	}
899		984
900	/*****************************************************************************/	985	/*****************************************************************************/
901		986
902	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
903	call_pending (EV_P)	1000	call_pending (EV_P)
904	{	1001	{
905	int pri;	1002	int pri;
906		1003
907	for (pri = NUMPRI; pri--; )	1004	for (pri = NUMPRI; pri--; )
908	while (pendingcnt [pri])	1005	while (pendingcnt [pri])
909	{	1006	{
910	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1007	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
911		1008
912	if (p->w)	1009	if (expect_true (p->w))
913	{	1010	{
914	p->w->pending = 0;	1011	p->w->pending = 0;
915	p->w->cb (EV_A_ p->w, p->events);	1012	EV_CB_INVOKE (p->w, p->events);
916	}	1013	}
917	}	1014	}
918	}	1015	}
919		1016
920	static void	1017	inline void
921	timers_reify (EV_P)	1018	timers_reify (EV_P)
922	{	1019	{
923	while (timercnt && ((WT)timers [0])->at <= mn_now)	1020	while (timercnt && ((WT)timers [0])->at <= mn_now)
924	{	1021	{
925	struct ev_timer *w = timers [0];	1022	struct ev_timer *w = timers [0];
…		…
928		1025
929	/* first reschedule or stop timer */	1026	/* first reschedule or stop timer */
930	if (w->repeat)	1027	if (w->repeat)
931	{	1028	{
932	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
933	((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
934	downheap ((WT *)timers, timercnt, 0);	1035	downheap ((WT *)timers, timercnt, 0);
935	}	1036	}
936	else	1037	else
937	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1038	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
938		1039
939	event (EV_A_ (W)w, EV_TIMEOUT);	1040	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
940	}	1041	}
941	}	1042	}
942		1043
943	static void	1044	#if EV_PERIODICS
		1045	inline void
944	periodics_reify (EV_P)	1046	periodics_reify (EV_P)
945	{	1047	{
946	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1048	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
947	{	1049	{
948	struct ev_periodic *w = periodics [0];	1050	struct ev_periodic *w = periodics [0];
949		1051
950	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1052	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
951		1053
952	/* first reschedule or stop timer */	1054	/* first reschedule or stop timer */
953	if (w->interval)	1055	if (w->reschedule_cb)
954	{	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	{
955	((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;
956	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));
957	downheap ((WT *)periodics, periodiccnt, 0);	1065	downheap ((WT *)periodics, periodiccnt, 0);
958	}	1066	}
959	else	1067	else
960	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1068	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
961		1069
962	event (EV_A_ (W)w, EV_PERIODIC);	1070	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
963	}	1071	}
964	}	1072	}
965		1073
966	static void	1074	static void
967	periodics_reschedule (EV_P)	1075	periodics_reschedule (EV_P)
…		…
971	/* adjust periodics after time jump */	1079	/* adjust periodics after time jump */
972	for (i = 0; i < periodiccnt; ++i)	1080	for (i = 0; i < periodiccnt; ++i)
973	{	1081	{
974	struct ev_periodic *w = periodics [i];	1082	struct ev_periodic *w = periodics [i];
975		1083
		1084	if (w->reschedule_cb)
		1085	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
976	if (w->interval)	1086	else if (w->interval)
977	{
978	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;
979
980	if (fabs (diff) >= 1e-4)
981	{
982	ev_periodic_stop (EV_A_ w);
983	ev_periodic_start (EV_A_ w);
984
985	i = 0; /* restart loop, inefficient, but time jumps should be rare */
986	}
987	}
988	}	1088	}
		1089
		1090	/* now rebuild the heap */
		1091	for (i = periodiccnt >> 1; i--; )
		1092	downheap ((WT *)periodics, periodiccnt, i);
989	}	1093	}
		1094	#endif
990		1095
991	inline int	1096	inline int
992	time_update_monotonic (EV_P)	1097	time_update_monotonic (EV_P)
993	{	1098	{
994	mn_now = get_clock ();	1099	mn_now = get_clock ();
995		1100
996	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1101	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
997	{	1102	{
998	rt_now = rtmn_diff + mn_now;	1103	ev_rt_now = rtmn_diff + mn_now;
999	return 0;	1104	return 0;
1000	}	1105	}
1001	else	1106	else
1002	{	1107	{
1003	now_floor = mn_now;	1108	now_floor = mn_now;
1004	rt_now = ev_time ();	1109	ev_rt_now = ev_time ();
1005	return 1;	1110	return 1;
1006	}	1111	}
1007	}	1112	}
1008		1113
1009	static void	1114	inline void
1010	time_update (EV_P)	1115	time_update (EV_P)
1011	{	1116	{
1012	int i;	1117	int i;
1013		1118
1014	#if EV_USE_MONOTONIC	1119	#if EV_USE_MONOTONIC
…		…
1018	{	1123	{
1019	ev_tstamp odiff = rtmn_diff;	1124	ev_tstamp odiff = rtmn_diff;
1020		1125
1021	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 */
1022	{	1127	{
1023	rtmn_diff = rt_now - mn_now;	1128	rtmn_diff = ev_rt_now - mn_now;
1024		1129
1025	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1130	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1026	return; /* all is well */	1131	return; /* all is well */
1027		1132
1028	rt_now = ev_time ();	1133	ev_rt_now = ev_time ();
1029	mn_now = get_clock ();	1134	mn_now = get_clock ();
1030	now_floor = mn_now;	1135	now_floor = mn_now;
1031	}	1136	}
1032		1137
		1138	# if EV_PERIODICS
1033	periodics_reschedule (EV_A);	1139	periodics_reschedule (EV_A);
		1140	# endif
1034	/* no timer adjustment, as the monotonic clock doesn't jump */	1141	/* no timer adjustment, as the monotonic clock doesn't jump */
1035	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1142	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1036	}	1143	}
1037	}	1144	}
1038	else	1145	else
1039	#endif	1146	#endif
1040	{	1147	{
1041	rt_now = ev_time ();	1148	ev_rt_now = ev_time ();
1042		1149
1043	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))
1044	{	1151	{
		1152	#if EV_PERIODICS
1045	periodics_reschedule (EV_A);	1153	periodics_reschedule (EV_A);
		1154	#endif
1046		1155
1047	/* 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 */
1048	for (i = 0; i < timercnt; ++i)	1157	for (i = 0; i < timercnt; ++i)
1049	((WT)timers [i])->at += rt_now - mn_now;	1158	((WT)timers [i])->at += ev_rt_now - mn_now;
1050	}	1159	}
1051		1160
1052	mn_now = rt_now;	1161	mn_now = ev_rt_now;
1053	}	1162	}
1054	}	1163	}
1055		1164
1056	void	1165	void
1057	ev_ref (EV_P)	1166	ev_ref (EV_P)
…		…
1071	ev_loop (EV_P_ int flags)	1180	ev_loop (EV_P_ int flags)
1072	{	1181	{
1073	double block;	1182	double block;
1074	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1183	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
1075		1184
1076	do	1185	while (activecnt)
1077	{	1186	{
1078	/* queue check watchers (and execute them) */	1187	/* queue check watchers (and execute them) */
1079	if (expect_false (preparecnt))	1188	if (expect_false (preparecnt))
1080	{	1189	{
1081	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1190	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1089	/* update fd-related kernel structures */	1198	/* update fd-related kernel structures */
1090	fd_reify (EV_A);	1199	fd_reify (EV_A);
1091		1200
1092	/* calculate blocking time */	1201	/* calculate blocking time */
1093		1202
1094	/* 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
1095	always have timers, we just calculate it always */	1204	always have timers, we just calculate it always */
1096	#if EV_USE_MONOTONIC	1205	#if EV_USE_MONOTONIC
1097	if (expect_true (have_monotonic))	1206	if (expect_true (have_monotonic))
1098	time_update_monotonic (EV_A);	1207	time_update_monotonic (EV_A);
1099	else	1208	else
1100	#endif	1209	#endif
1101	{	1210	{
1102	rt_now = ev_time ();	1211	ev_rt_now = ev_time ();
1103	mn_now = rt_now;	1212	mn_now = ev_rt_now;
1104	}	1213	}
1105		1214
1106	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1215	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1107	block = 0.;	1216	block = 0.;
1108	else	1217	else
…		…
1113	{	1222	{
1114	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1223	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
1115	if (block > to) block = to;	1224	if (block > to) block = to;
1116	}	1225	}
1117		1226
		1227	#if EV_PERIODICS
1118	if (periodiccnt)	1228	if (periodiccnt)
1119	{	1229	{
1120	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1230	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
1121	if (block > to) block = to;	1231	if (block > to) block = to;
1122	}	1232	}
		1233	#endif
1123		1234
1124	if (block < 0.) block = 0.;	1235	if (expect_false (block < 0.)) block = 0.;
1125	}	1236	}
1126		1237
1127	method_poll (EV_A_ block);	1238	method_poll (EV_A_ block);
1128		1239
1129	/* update rt_now, do magic */	1240	/* update ev_rt_now, do magic */
1130	time_update (EV_A);	1241	time_update (EV_A);
1131		1242
1132	/* queue pending timers and reschedule them */	1243	/* queue pending timers and reschedule them */
1133	timers_reify (EV_A); /* relative timers called last */	1244	timers_reify (EV_A); /* relative timers called last */
		1245	#if EV_PERIODICS
1134	periodics_reify (EV_A); /* absolute timers called first */	1246	periodics_reify (EV_A); /* absolute timers called first */
		1247	#endif
1135		1248
1136	/* queue idle watchers unless io or timers are pending */	1249	/* queue idle watchers unless io or timers are pending */
1137	if (!pendingcnt)	1250	if (idlecnt && !any_pending (EV_A))
1138	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1251	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1139		1252
1140	/* queue check watchers, to be executed first */	1253	/* queue check watchers, to be executed first */
1141	if (checkcnt)	1254	if (expect_false (checkcnt))
1142	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1255	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1143		1256
1144	call_pending (EV_A);	1257	call_pending (EV_A);
		1258
		1259	if (expect_false (loop_done))
		1260	break;
1145	}	1261	}
1146	while (activecnt && !loop_done);
1147		1262
1148	if (loop_done != 2)	1263	if (loop_done != 2)
1149	loop_done = 0;	1264	loop_done = 0;
1150	}	1265	}
1151		1266
…		…
1211	void	1326	void
1212	ev_io_start (EV_P_ struct ev_io *w)	1327	ev_io_start (EV_P_ struct ev_io *w)
1213	{	1328	{
1214	int fd = w->fd;	1329	int fd = w->fd;
1215		1330
1216	if (ev_is_active (w))	1331	if (expect_false (ev_is_active (w)))
1217	return;	1332	return;
1218		1333
1219	assert (("ev_io_start called with negative fd", fd >= 0));	1334	assert (("ev_io_start called with negative fd", fd >= 0));
1220		1335
1221	ev_start (EV_A_ (W)w, 1);	1336	ev_start (EV_A_ (W)w, 1);
…		…
1227		1342
1228	void	1343	void
1229	ev_io_stop (EV_P_ struct ev_io *w)	1344	ev_io_stop (EV_P_ struct ev_io *w)
1230	{	1345	{
1231	ev_clear_pending (EV_A_ (W)w);	1346	ev_clear_pending (EV_A_ (W)w);
1232	if (!ev_is_active (w))	1347	if (expect_false (!ev_is_active (w)))
1233	return;	1348	return;
		1349
		1350	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1234		1351
1235	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1352	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1236	ev_stop (EV_A_ (W)w);	1353	ev_stop (EV_A_ (W)w);
1237		1354
1238	fd_change (EV_A_ w->fd);	1355	fd_change (EV_A_ w->fd);
1239	}	1356	}
1240		1357
1241	void	1358	void
1242	ev_timer_start (EV_P_ struct ev_timer *w)	1359	ev_timer_start (EV_P_ struct ev_timer *w)
1243	{	1360	{
1244	if (ev_is_active (w))	1361	if (expect_false (ev_is_active (w)))
1245	return;	1362	return;
1246		1363
1247	((WT)w)->at += mn_now;	1364	((WT)w)->at += mn_now;
1248		1365
1249	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.));
1250		1367
1251	ev_start (EV_A_ (W)w, ++timercnt);	1368	ev_start (EV_A_ (W)w, ++timercnt);
1252	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1369	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1253	timers [timercnt - 1] = w;	1370	timers [timercnt - 1] = w;
1254	upheap ((WT *)timers, timercnt - 1);	1371	upheap ((WT *)timers, timercnt - 1);
1255		1372
1256	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1373	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1257	}	1374	}
1258		1375
1259	void	1376	void
1260	ev_timer_stop (EV_P_ struct ev_timer *w)	1377	ev_timer_stop (EV_P_ struct ev_timer *w)
1261	{	1378	{
1262	ev_clear_pending (EV_A_ (W)w);	1379	ev_clear_pending (EV_A_ (W)w);
1263	if (!ev_is_active (w))	1380	if (expect_false (!ev_is_active (w)))
1264	return;	1381	return;
1265		1382
1266	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1383	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1267		1384
1268	if (((W)w)->active < timercnt--)	1385	if (expect_true (((W)w)->active < timercnt--))
1269	{	1386	{
1270	timers [((W)w)->active - 1] = timers [timercnt];	1387	timers [((W)w)->active - 1] = timers [timercnt];
1271	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1388	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1272	}	1389	}
1273		1390
1274	((WT)w)->at = w->repeat;	1391	((WT)w)->at -= mn_now;
1275		1392
1276	ev_stop (EV_A_ (W)w);	1393	ev_stop (EV_A_ (W)w);
1277	}	1394	}
1278		1395
1279	void	1396	void
…		…
1282	if (ev_is_active (w))	1399	if (ev_is_active (w))
1283	{	1400	{
1284	if (w->repeat)	1401	if (w->repeat)
1285	{	1402	{
1286	((WT)w)->at = mn_now + w->repeat;	1403	((WT)w)->at = mn_now + w->repeat;
1287	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1404	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1288	}	1405	}
1289	else	1406	else
1290	ev_timer_stop (EV_A_ w);	1407	ev_timer_stop (EV_A_ w);
1291	}	1408	}
1292	else if (w->repeat)	1409	else if (w->repeat)
		1410	{
		1411	w->at = w->repeat;
1293	ev_timer_start (EV_A_ w);	1412	ev_timer_start (EV_A_ w);
		1413	}
1294	}	1414	}
1295		1415
		1416	#if EV_PERIODICS
1296	void	1417	void
1297	ev_periodic_start (EV_P_ struct ev_periodic *w)	1418	ev_periodic_start (EV_P_ struct ev_periodic *w)
1298	{	1419	{
1299	if (ev_is_active (w))	1420	if (expect_false (ev_is_active (w)))
1300	return;	1421	return;
1301		1422
		1423	if (w->reschedule_cb)
		1424	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1425	else if (w->interval)
		1426	{
1302	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.));
1303
1304	/* 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 */
1305	if (w->interval)
1306	((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	}
1307		1431
1308	ev_start (EV_A_ (W)w, ++periodiccnt);	1432	ev_start (EV_A_ (W)w, ++periodiccnt);
1309	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1433	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1310	periodics [periodiccnt - 1] = w;	1434	periodics [periodiccnt - 1] = w;
1311	upheap ((WT *)periodics, periodiccnt - 1);	1435	upheap ((WT *)periodics, periodiccnt - 1);
1312		1436
1313	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1437	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1314	}	1438	}
1315		1439
1316	void	1440	void
1317	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1441	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1318	{	1442	{
1319	ev_clear_pending (EV_A_ (W)w);	1443	ev_clear_pending (EV_A_ (W)w);
1320	if (!ev_is_active (w))	1444	if (expect_false (!ev_is_active (w)))
1321	return;	1445	return;
1322		1446
1323	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1447	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1324		1448
1325	if (((W)w)->active < periodiccnt--)	1449	if (expect_true (((W)w)->active < periodiccnt--))
1326	{	1450	{
1327	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1451	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1328	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1452	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1329	}	1453	}
1330		1454
1331	ev_stop (EV_A_ (W)w);	1455	ev_stop (EV_A_ (W)w);
1332	}	1456	}
1333		1457
1334	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
1335	ev_idle_start (EV_P_ struct ev_idle *w)	1468	ev_idle_start (EV_P_ struct ev_idle *w)
1336	{	1469	{
1337	if (ev_is_active (w))	1470	if (expect_false (ev_is_active (w)))
1338	return;	1471	return;
1339		1472
1340	ev_start (EV_A_ (W)w, ++idlecnt);	1473	ev_start (EV_A_ (W)w, ++idlecnt);
1341	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));	1474	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1342	idles [idlecnt - 1] = w;	1475	idles [idlecnt - 1] = w;
1343	}	1476	}
1344		1477
1345	void	1478	void
1346	ev_idle_stop (EV_P_ struct ev_idle *w)	1479	ev_idle_stop (EV_P_ struct ev_idle *w)
1347	{	1480	{
1348	ev_clear_pending (EV_A_ (W)w);	1481	ev_clear_pending (EV_A_ (W)w);
1349	if (ev_is_active (w))	1482	if (expect_false (!ev_is_active (w)))
1350	return;	1483	return;
1351		1484
1352	idles [((W)w)->active - 1] = idles [--idlecnt];	1485	idles [((W)w)->active - 1] = idles [--idlecnt];
1353	ev_stop (EV_A_ (W)w);	1486	ev_stop (EV_A_ (W)w);
1354	}	1487	}
1355		1488
1356	void	1489	void
1357	ev_prepare_start (EV_P_ struct ev_prepare *w)	1490	ev_prepare_start (EV_P_ struct ev_prepare *w)
1358	{	1491	{
1359	if (ev_is_active (w))	1492	if (expect_false (ev_is_active (w)))
1360	return;	1493	return;
1361		1494
1362	ev_start (EV_A_ (W)w, ++preparecnt);	1495	ev_start (EV_A_ (W)w, ++preparecnt);
1363	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));	1496	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1364	prepares [preparecnt - 1] = w;	1497	prepares [preparecnt - 1] = w;
1365	}	1498	}
1366		1499
1367	void	1500	void
1368	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1501	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1369	{	1502	{
1370	ev_clear_pending (EV_A_ (W)w);	1503	ev_clear_pending (EV_A_ (W)w);
1371	if (ev_is_active (w))	1504	if (expect_false (!ev_is_active (w)))
1372	return;	1505	return;
1373		1506
1374	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1507	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1375	ev_stop (EV_A_ (W)w);	1508	ev_stop (EV_A_ (W)w);
1376	}	1509	}
1377		1510
1378	void	1511	void
1379	ev_check_start (EV_P_ struct ev_check *w)	1512	ev_check_start (EV_P_ struct ev_check *w)
1380	{	1513	{
1381	if (ev_is_active (w))	1514	if (expect_false (ev_is_active (w)))
1382	return;	1515	return;
1383		1516
1384	ev_start (EV_A_ (W)w, ++checkcnt);	1517	ev_start (EV_A_ (W)w, ++checkcnt);
1385	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));	1518	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1386	checks [checkcnt - 1] = w;	1519	checks [checkcnt - 1] = w;
1387	}	1520	}
1388		1521
1389	void	1522	void
1390	ev_check_stop (EV_P_ struct ev_check *w)	1523	ev_check_stop (EV_P_ struct ev_check *w)
1391	{	1524	{
1392	ev_clear_pending (EV_A_ (W)w);	1525	ev_clear_pending (EV_A_ (W)w);
1393	if (ev_is_active (w))	1526	if (expect_false (!ev_is_active (w)))
1394	return;	1527	return;
1395		1528
1396	checks [((W)w)->active - 1] = checks [--checkcnt];	1529	checks [((W)w)->active - 1] = checks [--checkcnt];
1397	ev_stop (EV_A_ (W)w);	1530	ev_stop (EV_A_ (W)w);
1398	}	1531	}
…		…
1403		1536
1404	void	1537	void
1405	ev_signal_start (EV_P_ struct ev_signal *w)	1538	ev_signal_start (EV_P_ struct ev_signal *w)
1406	{	1539	{
1407	#if EV_MULTIPLICITY	1540	#if EV_MULTIPLICITY
1408	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));
1409	#endif	1542	#endif
1410	if (ev_is_active (w))	1543	if (expect_false (ev_is_active (w)))
1411	return;	1544	return;
1412		1545
1413	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));
1414		1547
1415	ev_start (EV_A_ (W)w, 1);	1548	ev_start (EV_A_ (W)w, 1);
1416	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1549	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1417	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1550	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1418		1551
1419	if (!((WL)w)->next)	1552	if (!((WL)w)->next)
1420	{	1553	{
1421	#if WIN32	1554	#if _WIN32
1422	signal (w->signum, sighandler);	1555	signal (w->signum, sighandler);
1423	#else	1556	#else
1424	struct sigaction sa;	1557	struct sigaction sa;
1425	sa.sa_handler = sighandler;	1558	sa.sa_handler = sighandler;
1426	sigfillset (&sa.sa_mask);	1559	sigfillset (&sa.sa_mask);
…		…
1432		1565
1433	void	1566	void
1434	ev_signal_stop (EV_P_ struct ev_signal *w)	1567	ev_signal_stop (EV_P_ struct ev_signal *w)
1435	{	1568	{
1436	ev_clear_pending (EV_A_ (W)w);	1569	ev_clear_pending (EV_A_ (W)w);
1437	if (!ev_is_active (w))	1570	if (expect_false (!ev_is_active (w)))
1438	return;	1571	return;
1439		1572
1440	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1573	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1441	ev_stop (EV_A_ (W)w);	1574	ev_stop (EV_A_ (W)w);
1442		1575
…		…
1446		1579
1447	void	1580	void
1448	ev_child_start (EV_P_ struct ev_child *w)	1581	ev_child_start (EV_P_ struct ev_child *w)
1449	{	1582	{
1450	#if EV_MULTIPLICITY	1583	#if EV_MULTIPLICITY
1451	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));
1452	#endif	1585	#endif
1453	if (ev_is_active (w))	1586	if (expect_false (ev_is_active (w)))
1454	return;	1587	return;
1455		1588
1456	ev_start (EV_A_ (W)w, 1);	1589	ev_start (EV_A_ (W)w, 1);
1457	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1590	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1458	}	1591	}
1459		1592
1460	void	1593	void
1461	ev_child_stop (EV_P_ struct ev_child *w)	1594	ev_child_stop (EV_P_ struct ev_child *w)
1462	{	1595	{
1463	ev_clear_pending (EV_A_ (W)w);	1596	ev_clear_pending (EV_A_ (W)w);
1464	if (ev_is_active (w))	1597	if (expect_false (!ev_is_active (w)))
1465	return;	1598	return;
1466		1599
1467	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1600	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1468	ev_stop (EV_A_ (W)w);	1601	ev_stop (EV_A_ (W)w);
1469	}	1602	}
…		…
1506	void	1639	void
1507	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)
1508	{	1641	{
1509	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));	1642	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1510		1643
1511	if (!once)	1644	if (expect_false (!once))
		1645	{
1512	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1646	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1513	else	1647	return;
1514	{	1648	}
		1649
1515	once->cb = cb;	1650	once->cb = cb;
1516	once->arg = arg;	1651	once->arg = arg;
1517		1652
1518	ev_watcher_init (&once->io, once_cb_io);	1653	ev_init (&once->io, once_cb_io);
1519	if (fd >= 0)	1654	if (fd >= 0)
1520	{	1655	{
1521	ev_io_set (&once->io, fd, events);	1656	ev_io_set (&once->io, fd, events);
1522	ev_io_start (EV_A_ &once->io);	1657	ev_io_start (EV_A_ &once->io);
1523	}	1658	}
1524		1659
1525	ev_watcher_init (&once->to, once_cb_to);	1660	ev_init (&once->to, once_cb_to);
1526	if (timeout >= 0.)	1661	if (timeout >= 0.)
1527	{	1662	{
1528	ev_timer_set (&once->to, timeout, 0.);	1663	ev_timer_set (&once->to, timeout, 0.);
1529	ev_timer_start (EV_A_ &once->to);	1664	ev_timer_start (EV_A_ &once->to);
1530	}
1531	}	1665	}
1532	}	1666	}
1533		1667
		1668	#ifdef __cplusplus
		1669	}
		1670	#endif
		1671

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Comparing libev/ev.c (file contents): Revision 1.75 by root, Tue Nov 6 19:29:20 2007 UTC vs. Revision 1.123 by root, Sat Nov 17 02:23:54 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.75 by root, Tue Nov 6 19:29:20 2007 UTC vs.
Revision 1.123 by root, Sat Nov 17 02:23:54 2007 UTC