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

Comparing libev/ev.c (file contents):
Revision 1.79 by root, Fri Nov 9 15:15:20 2007 UTC vs.
Revision 1.132 by root, Fri Nov 23 10:36:30 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
		46	# else
		47	# ifndef EV_USE_MONOTONIC
		48	# define EV_USE_MONOTONIC 0
		49	# endif
		50	# ifndef EV_USE_REALTIME
		51	# define EV_USE_REALTIME 0
		52	# endif
37	# endif	53	# endif
38		54
		55	# ifndef EV_USE_SELECT
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	56	# if HAVE_SELECT && HAVE_SYS_SELECT_H
40	# define EV_USE_SELECT 1	57	# define EV_USE_SELECT 1
		58	# else
		59	# define EV_USE_SELECT 0
		60	# endif
41	# endif	61	# endif
42		62
		63	# ifndef EV_USE_POLL
43	# if HAVE_POLL && HAVE_POLL_H	64	# if HAVE_POLL && HAVE_POLL_H
44	# define EV_USE_POLL 1	65	# define EV_USE_POLL 1
		66	# else
		67	# define EV_USE_POLL 0
		68	# endif
45	# endif	69	# endif
46		70
		71	# ifndef EV_USE_EPOLL
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	72	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48	# define EV_USE_EPOLL 1	73	# define EV_USE_EPOLL 1
		74	# else
		75	# define EV_USE_EPOLL 0
		76	# endif
49	# endif	77	# endif
50		78
		79	# ifndef EV_USE_KQUEUE
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	80	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# define EV_USE_KQUEUE 1	81	# define EV_USE_KQUEUE 1
		82	# else
		83	# define EV_USE_KQUEUE 0
		84	# endif
		85	# endif
		86
		87	# ifndef EV_USE_PORT
		88	# if HAVE_PORT_H && HAVE_PORT_CREATE
		89	# define EV_USE_PORT 1
		90	# else
		91	# define EV_USE_PORT 0
		92	# endif
53	# endif	93	# endif
54		94
55	#endif	95	#endif
56		96
57	#include <math.h>	97	#include <math.h>
…		…
66	#include <sys/types.h>	106	#include <sys/types.h>
67	#include <time.h>	107	#include <time.h>
68		108
69	#include <signal.h>	109	#include <signal.h>
70		110
71	#ifndef WIN32	111	#ifndef _WIN32
72	# include <unistd.h>	112	# include <unistd.h>
73	# include <sys/time.h>	113	# include <sys/time.h>
74	# include <sys/wait.h>	114	# include <sys/wait.h>
		115	#else
		116	# define WIN32_LEAN_AND_MEAN
		117	# include <windows.h>
		118	# ifndef EV_SELECT_IS_WINSOCKET
		119	# define EV_SELECT_IS_WINSOCKET 1
75	#endif	120	# endif
		121	#endif
		122
76	/**/	123	/**/
77		124
78	#ifndef EV_USE_MONOTONIC	125	#ifndef EV_USE_MONOTONIC
79	# define EV_USE_MONOTONIC 1	126	# define EV_USE_MONOTONIC 0
		127	#endif
		128
		129	#ifndef EV_USE_REALTIME
		130	# define EV_USE_REALTIME 0
80	#endif	131	#endif
81		132
82	#ifndef EV_USE_SELECT	133	#ifndef EV_USE_SELECT
83	# define EV_USE_SELECT 1	134	# define EV_USE_SELECT 1
84	#endif	135	#endif
85		136
86	#ifndef EV_USE_POLL	137	#ifndef EV_USE_POLL
87	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	138	# ifdef _WIN32
		139	# define EV_USE_POLL 0
		140	# else
		141	# define EV_USE_POLL 1
		142	# endif
88	#endif	143	#endif
89		144
90	#ifndef EV_USE_EPOLL	145	#ifndef EV_USE_EPOLL
91	# define EV_USE_EPOLL 0	146	# define EV_USE_EPOLL 0
92	#endif	147	#endif
93		148
94	#ifndef EV_USE_KQUEUE	149	#ifndef EV_USE_KQUEUE
95	# define EV_USE_KQUEUE 0	150	# define EV_USE_KQUEUE 0
96	#endif	151	#endif
97		152
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	153	#ifndef EV_USE_PORT
109	# define EV_USE_REALTIME 1	154	# define EV_USE_PORT 0
110	#endif	155	#endif
111		156
112	/**/	157	/**/
113		158
114	#ifndef CLOCK_MONOTONIC	159	#ifndef CLOCK_MONOTONIC
…		…
119	#ifndef CLOCK_REALTIME	164	#ifndef CLOCK_REALTIME
120	# undef EV_USE_REALTIME	165	# undef EV_USE_REALTIME
121	# define EV_USE_REALTIME 0	166	# define EV_USE_REALTIME 0
122	#endif	167	#endif
123		168
		169	#if EV_SELECT_IS_WINSOCKET
		170	# include <winsock.h>
		171	#endif
		172
124	/**/	173	/**/
125		174
126	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	175	#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) */	176	#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 */	177	#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 */	178	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
130		179
		180	#ifdef EV_H
		181	# include EV_H
		182	#else
131	#include "ev.h"	183	# include "ev.h"
		184	#endif
132		185
133	#if __GNUC__ >= 3	186	#if __GNUC__ >= 3
134	# define expect(expr,value) __builtin_expect ((expr),(value))	187	# define expect(expr,value) __builtin_expect ((expr),(value))
135	# define inline inline	188	# define inline static inline
136	#else	189	#else
137	# define expect(expr,value) (expr)	190	# define expect(expr,value) (expr)
138	# define inline static	191	# define inline static
139	#endif	192	#endif
140		193
…		…
142	#define expect_true(expr) expect ((expr) != 0, 1)	195	#define expect_true(expr) expect ((expr) != 0, 1)
143		196
144	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	197	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
145	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	198	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
146		199
		200	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		201	#define EMPTY2(a,b) /* used to suppress some warnings */
		202
147	typedef struct ev_watcher *W;	203	typedef struct ev_watcher *W;
148	typedef struct ev_watcher_list *WL;	204	typedef struct ev_watcher_list *WL;
149	typedef struct ev_watcher_time *WT;	205	typedef struct ev_watcher_time *WT;
150		206
151	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	207	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
152		208
		209	#ifdef _WIN32
153	#include "ev_win32.c"	210	# include "ev_win32.c"
		211	#endif
154		212
155	/*****************************************************************************/	213	/*****************************************************************************/
156		214
157	static void (syserr_cb)(const char msg);	215	static void (syserr_cb)(const char msg);
158		216
…		…
205	typedef struct	263	typedef struct
206	{	264	{
207	WL head;	265	WL head;
208	unsigned char events;	266	unsigned char events;
209	unsigned char reify;	267	unsigned char reify;
		268	#if EV_SELECT_IS_WINSOCKET
		269	SOCKET handle;
		270	#endif
210	} ANFD;	271	} ANFD;
211		272
212	typedef struct	273	typedef struct
213	{	274	{
214	W w;	275	W w;
215	int events;	276	int events;
216	} ANPENDING;	277	} ANPENDING;
217		278
218	#if EV_MULTIPLICITY	279	#if EV_MULTIPLICITY
219		280
220	struct ev_loop	281	struct ev_loop
221	{	282	{
		283	ev_tstamp ev_rt_now;
		284	#define ev_rt_now ((loop)->ev_rt_now)
222	# define VAR(name,decl) decl;	285	#define VAR(name,decl) decl;
223	# include "ev_vars.h"	286	#include "ev_vars.h"
224	};
225	# undef VAR	287	#undef VAR
		288	};
226	# include "ev_wrap.h"	289	#include "ev_wrap.h"
		290
		291	static struct ev_loop default_loop_struct;
		292	struct ev_loop *ev_default_loop_ptr;
227		293
228	#else	294	#else
229		295
		296	ev_tstamp ev_rt_now;
230	# define VAR(name,decl) static decl;	297	#define VAR(name,decl) static decl;
231	# include "ev_vars.h"	298	#include "ev_vars.h"
232	# undef VAR	299	#undef VAR
		300
		301	static int ev_default_loop_ptr;
233		302
234	#endif	303	#endif
235		304
236	/*****************************************************************************/	305	/*****************************************************************************/
237		306
238	inline ev_tstamp	307	ev_tstamp
239	ev_time (void)	308	ev_time (void)
240	{	309	{
241	#if EV_USE_REALTIME	310	#if EV_USE_REALTIME
242	struct timespec ts;	311	struct timespec ts;
243	clock_gettime (CLOCK_REALTIME, &ts);	312	clock_gettime (CLOCK_REALTIME, &ts);
…		…
262	#endif	331	#endif
263		332
264	return ev_time ();	333	return ev_time ();
265	}	334	}
266		335
		336	#if EV_MULTIPLICITY
267	ev_tstamp	337	ev_tstamp
268	ev_now (EV_P)	338	ev_now (EV_P)
269	{	339	{
270	return rt_now;	340	return ev_rt_now;
271	}	341	}
		342	#endif
272		343
273	#define array_roundsize(type,n) ((n) \| 4 & ~3)	344	#define array_roundsize(type,n) (((n) \| 4) & ~3)
274		345
275	#define array_needsize(type,base,cur,cnt,init) \	346	#define array_needsize(type,base,cur,cnt,init) \
276	if (expect_false ((cnt) > cur)) \	347	if (expect_false ((cnt) > cur)) \
277	{ \	348	{ \
278	int newcnt = cur; \	349	int newcnt = cur; \
…		…
293	stem ## max = array_roundsize (stem ## cnt >> 1); \	364	stem ## max = array_roundsize (stem ## cnt >> 1); \
294	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\	365	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
295	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	366	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
296	}	367	}
297		368
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) \	369	#define array_free(stem, idx) \
304	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	370	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
305		371
306	/*****************************************************************************/	372	/*****************************************************************************/
307		373
…		…
321	void	387	void
322	ev_feed_event (EV_P_ void *w, int revents)	388	ev_feed_event (EV_P_ void *w, int revents)
323	{	389	{
324	W w_ = (W)w;	390	W w_ = (W)w;
325		391
326	if (w_->pending)	392	if (expect_false (w_->pending))
327	{	393	{
328	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;	394	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
329	return;	395	return;
330	}	396	}
331		397
332	w_->pending = ++pendingcnt [ABSPRI (w_)];	398	w_->pending = ++pendingcnt [ABSPRI (w_)];
333	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));	399	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
334	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;	400	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
335	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;	401	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
336	}	402	}
337		403
338	static void	404	static void
…		…
365	fd_event (EV_A_ fd, revents);	431	fd_event (EV_A_ fd, revents);
366	}	432	}
367		433
368	/*****************************************************************************/	434	/*****************************************************************************/
369		435
370	static void	436	inline void
371	fd_reify (EV_P)	437	fd_reify (EV_P)
372	{	438	{
373	int i;	439	int i;
374		440
375	for (i = 0; i < fdchangecnt; ++i)	441	for (i = 0; i < fdchangecnt; ++i)
…		…
381	int events = 0;	447	int events = 0;
382		448
383	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	449	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
384	events \|= w->events;	450	events \|= w->events;
385		451
		452	#if EV_SELECT_IS_WINSOCKET
		453	if (events)
		454	{
		455	unsigned long argp;
		456	anfd->handle = _get_osfhandle (fd);
		457	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		458	}
		459	#endif
		460
386	anfd->reify = 0;	461	anfd->reify = 0;
387		462
388	method_modify (EV_A_ fd, anfd->events, events);	463	backend_modify (EV_A_ fd, anfd->events, events);
389	anfd->events = events;	464	anfd->events = events;
390	}	465	}
391		466
392	fdchangecnt = 0;	467	fdchangecnt = 0;
393	}	468	}
394		469
395	static void	470	static void
396	fd_change (EV_P_ int fd)	471	fd_change (EV_P_ int fd)
397	{	472	{
398	if (anfds [fd].reify)	473	if (expect_false (anfds [fd].reify))
399	return;	474	return;
400		475
401	anfds [fd].reify = 1;	476	anfds [fd].reify = 1;
402		477
403	++fdchangecnt;	478	++fdchangecnt;
404	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	479	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
405	fdchanges [fdchangecnt - 1] = fd;	480	fdchanges [fdchangecnt - 1] = fd;
406	}	481	}
407		482
408	static void	483	static void
409	fd_kill (EV_P_ int fd)	484	fd_kill (EV_P_ int fd)
…		…
415	ev_io_stop (EV_A_ w);	490	ev_io_stop (EV_A_ w);
416	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	491	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
417	}	492	}
418	}	493	}
419		494
420	static int	495	inline int
421	fd_valid (int fd)	496	fd_valid (int fd)
422	{	497	{
423	#ifdef WIN32	498	#ifdef _WIN32
424	return !!win32_get_osfhandle (fd);	499	return _get_osfhandle (fd) != -1;
425	#else	500	#else
426	return fcntl (fd, F_GETFD) != -1;	501	return fcntl (fd, F_GETFD) != -1;
427	#endif	502	#endif
428	}	503	}
429		504
…		…
451	fd_kill (EV_A_ fd);	526	fd_kill (EV_A_ fd);
452	return;	527	return;
453	}	528	}
454	}	529	}
455		530
456	/* usually called after fork if method needs to re-arm all fds from scratch */	531	/* usually called after fork if backend needs to re-arm all fds from scratch */
457	static void	532	static void
458	fd_rearm_all (EV_P)	533	fd_rearm_all (EV_P)
459	{	534	{
460	int fd;	535	int fd;
461		536
…		…
509		584
510	heap [k] = w;	585	heap [k] = w;
511	((W)heap [k])->active = k + 1;	586	((W)heap [k])->active = k + 1;
512	}	587	}
513		588
		589	inline void
		590	adjustheap (WT *heap, int N, int k)
		591	{
		592	upheap (heap, k);
		593	downheap (heap, N, k);
		594	}
		595
514	/*****************************************************************************/	596	/*****************************************************************************/
515		597
516	typedef struct	598	typedef struct
517	{	599	{
518	WL head;	600	WL head;
…		…
539	}	621	}
540		622
541	static void	623	static void
542	sighandler (int signum)	624	sighandler (int signum)
543	{	625	{
544	#if WIN32	626	#if _WIN32
545	signal (signum, sighandler);	627	signal (signum, sighandler);
546	#endif	628	#endif
547		629
548	signals [signum - 1].gotsig = 1;	630	signals [signum - 1].gotsig = 1;
549		631
550	if (!gotsig)	632	if (!gotsig)
551	{	633	{
552	int old_errno = errno;	634	int old_errno = errno;
553	gotsig = 1;	635	gotsig = 1;
554	#ifdef WIN32
555	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
556	#else
557	write (sigpipe [1], &signum, 1);	636	write (sigpipe [1], &signum, 1);
558	#endif
559	errno = old_errno;	637	errno = old_errno;
560	}	638	}
561	}	639	}
562		640
563	void	641	void
564	ev_feed_signal_event (EV_P_ int signum)	642	ev_feed_signal_event (EV_P_ int signum)
565	{	643	{
		644	WL w;
		645
566	#if EV_MULTIPLICITY	646	#if EV_MULTIPLICITY
567	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	647	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
568	#endif	648	#endif
569		649
570	--signum;	650	--signum;
571		651
572	if (signum < 0 \|\| signum >= signalmax)	652	if (signum < 0 \|\| signum >= signalmax)
…		…
579	}	659	}
580		660
581	static void	661	static void
582	sigcb (EV_P_ struct ev_io *iow, int revents)	662	sigcb (EV_P_ struct ev_io *iow, int revents)
583	{	663	{
584	WL w;
585	int signum;	664	int signum;
586		665
587	#ifdef WIN32
588	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
589	#else
590	read (sigpipe [0], &revents, 1);	666	read (sigpipe [0], &revents, 1);
591	#endif
592	gotsig = 0;	667	gotsig = 0;
593		668
594	for (signum = signalmax; signum--; )	669	for (signum = signalmax; signum--; )
595	if (signals [signum].gotsig)	670	if (signals [signum].gotsig)
596	sigevent (EV_A_ signum + 1);	671	ev_feed_signal_event (EV_A_ signum + 1);
		672	}
		673
		674	static void
		675	fd_intern (int fd)
		676	{
		677	#ifdef _WIN32
		678	int arg = 1;
		679	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		680	#else
		681	fcntl (fd, F_SETFD, FD_CLOEXEC);
		682	fcntl (fd, F_SETFL, O_NONBLOCK);
		683	#endif
597	}	684	}
598		685
599	static void	686	static void
600	siginit (EV_P)	687	siginit (EV_P)
601	{	688	{
602	#ifndef WIN32	689	fd_intern (sigpipe [0]);
603	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	690	fd_intern (sigpipe [1]);
604	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
605
606	/* rather than sort out wether we really need nb, set it */
607	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
608	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
609	#endif
610		691
611	ev_io_set (&sigev, sigpipe [0], EV_READ);	692	ev_io_set (&sigev, sigpipe [0], EV_READ);
612	ev_io_start (EV_A_ &sigev);	693	ev_io_start (EV_A_ &sigev);
613	ev_unref (EV_A); /* child watcher should not keep loop alive */	694	ev_unref (EV_A); /* child watcher should not keep loop alive */
614	}	695	}
615		696
616	/*****************************************************************************/	697	/*****************************************************************************/
617		698
618	static struct ev_child *childs [PID_HASHSIZE];	699	static struct ev_child *childs [PID_HASHSIZE];
619		700
620	#ifndef WIN32	701	#ifndef _WIN32
621		702
622	static struct ev_signal childev;	703	static struct ev_signal childev;
623		704
624	#ifndef WCONTINUED	705	#ifndef WCONTINUED
625	# define WCONTINUED 0	706	# define WCONTINUED 0
…		…
646	int pid, status;	727	int pid, status;
647		728
648	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	729	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
649	{	730	{
650	/* make sure we are called again until all childs have been reaped */	731	/* make sure we are called again until all childs have been reaped */
		732	/* we need to do it this way so that the callback gets called before we continue */
651	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	733	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
652		734
653	child_reap (EV_A_ sw, pid, pid, status);	735	child_reap (EV_A_ sw, pid, pid, status);
654	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	736	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
655	}	737	}
656	}	738	}
657		739
658	#endif	740	#endif
659		741
660	/*****************************************************************************/	742	/*****************************************************************************/
661		743
		744	#if EV_USE_PORT
		745	# include "ev_port.c"
		746	#endif
662	#if EV_USE_KQUEUE	747	#if EV_USE_KQUEUE
663	# include "ev_kqueue.c"	748	# include "ev_kqueue.c"
664	#endif	749	#endif
665	#if EV_USE_EPOLL	750	#if EV_USE_EPOLL
666	# include "ev_epoll.c"	751	# include "ev_epoll.c"
…		…
686		771
687	/* return true if we are running with elevated privileges and should ignore env variables */	772	/* return true if we are running with elevated privileges and should ignore env variables */
688	static int	773	static int
689	enable_secure (void)	774	enable_secure (void)
690	{	775	{
691	#ifdef WIN32	776	#ifdef _WIN32
692	return 0;	777	return 0;
693	#else	778	#else
694	return getuid () != geteuid ()	779	return getuid () != geteuid ()
695	\|\| getgid () != getegid ();	780	\|\| getgid () != getegid ();
696	#endif	781	#endif
697	}	782	}
698		783
699	int	784	unsigned int
700	ev_method (EV_P)	785	ev_supported_backends (void)
701	{	786	{
702	return method;	787	unsigned int flags = 0;
703	}
704		788
705	static void	789	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
706	loop_init (EV_P_ int methods)	790	if (EV_USE_KQUEUE) flags \|= EVBACKEND_KQUEUE;
		791	if (EV_USE_EPOLL ) flags \|= EVBACKEND_EPOLL;
		792	if (EV_USE_POLL ) flags \|= EVBACKEND_POLL;
		793	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
		794
		795	return flags;
		796	}
		797
		798	unsigned int
		799	ev_recommended_backends (void)
707	{	800	{
708	if (!method)	801	unsigned int flags = ev_supported_backends ();
		802
		803	#ifndef __NetBSD__
		804	/* kqueue is borked on everything but netbsd apparently */
		805	/* it usually doesn't work correctly on anything but sockets and pipes */
		806	flags &= ~EVBACKEND_KQUEUE;
		807	#endif
		808	#ifdef __APPLE__
		809	// flags &= ~EVBACKEND_KQUEUE; for documentation
		810	flags &= ~EVBACKEND_POLL;
		811	#endif
		812
		813	return flags;
		814	}
		815
		816	unsigned int
		817	ev_backend (EV_P)
		818	{
		819	return backend;
		820	}
		821
		822	static void
		823	loop_init (EV_P_ unsigned int flags)
		824	{
		825	if (!backend)
709	{	826	{
710	#if EV_USE_MONOTONIC	827	#if EV_USE_MONOTONIC
711	{	828	{
712	struct timespec ts;	829	struct timespec ts;
713	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	830	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
714	have_monotonic = 1;	831	have_monotonic = 1;
715	}	832	}
716	#endif	833	#endif
717		834
718	rt_now = ev_time ();	835	ev_rt_now = ev_time ();
719	mn_now = get_clock ();	836	mn_now = get_clock ();
720	now_floor = mn_now;	837	now_floor = mn_now;
721	rtmn_diff = rt_now - mn_now;	838	rtmn_diff = ev_rt_now - mn_now;
722		839
723	if (methods == EVMETHOD_AUTO)	840	if (!(flags & EVFLAG_NOENV)
724	if (!enable_secure () && getenv ("LIBEV_METHODS"))	841	&& !enable_secure ()
		842	&& getenv ("LIBEV_FLAGS"))
725	methods = atoi (getenv ("LIBEV_METHODS"));	843	flags = atoi (getenv ("LIBEV_FLAGS"));
726	else
727	methods = EVMETHOD_ANY;
728		844
729	method = 0;	845	if (!(flags & 0x0000ffffUL))
730	#if EV_USE_WIN32	846	flags \|= ev_recommended_backends ();
731	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	847
		848	backend = 0;
		849	#if EV_USE_PORT
		850	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
732	#endif	851	#endif
733	#if EV_USE_KQUEUE	852	#if EV_USE_KQUEUE
734	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	853	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
735	#endif	854	#endif
736	#if EV_USE_EPOLL	855	#if EV_USE_EPOLL
737	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	856	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
738	#endif	857	#endif
739	#if EV_USE_POLL	858	#if EV_USE_POLL
740	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	859	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
741	#endif	860	#endif
742	#if EV_USE_SELECT	861	#if EV_USE_SELECT
743	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	862	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
744	#endif	863	#endif
745		864
746	ev_watcher_init (&sigev, sigcb);	865	ev_init (&sigev, sigcb);
747	ev_set_priority (&sigev, EV_MAXPRI);	866	ev_set_priority (&sigev, EV_MAXPRI);
748	}	867	}
749	}	868	}
750		869
751	void	870	static void
752	loop_destroy (EV_P)	871	loop_destroy (EV_P)
753	{	872	{
754	int i;	873	int i;
755		874
756	#if EV_USE_WIN32	875	#if EV_USE_PORT
757	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	876	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
758	#endif	877	#endif
759	#if EV_USE_KQUEUE	878	#if EV_USE_KQUEUE
760	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	879	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
761	#endif	880	#endif
762	#if EV_USE_EPOLL	881	#if EV_USE_EPOLL
763	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	882	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
764	#endif	883	#endif
765	#if EV_USE_POLL	884	#if EV_USE_POLL
766	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	885	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
767	#endif	886	#endif
768	#if EV_USE_SELECT	887	#if EV_USE_SELECT
769	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	888	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
770	#endif	889	#endif
771		890
772	for (i = NUMPRI; i--; )	891	for (i = NUMPRI; i--; )
773	array_free (pending, [i]);	892	array_free (pending, [i]);
774		893
775	/* have to use the microsoft-never-gets-it-right macro */	894	/* have to use the microsoft-never-gets-it-right macro */
776	array_free_microshit (fdchange);	895	array_free (fdchange, EMPTY0);
777	array_free_microshit (timer);	896	array_free (timer, EMPTY0);
778	array_free_microshit (periodic);	897	#if EV_PERIODICS
779	array_free_microshit (idle);	898	array_free (periodic, EMPTY0);
780	array_free_microshit (prepare);	899	#endif
781	array_free_microshit (check);	900	array_free (idle, EMPTY0);
		901	array_free (prepare, EMPTY0);
		902	array_free (check, EMPTY0);
782		903
783	method = 0;	904	backend = 0;
784	}	905	}
785		906
786	static void	907	static void
787	loop_fork (EV_P)	908	loop_fork (EV_P)
788	{	909	{
		910	#if EV_USE_PORT
		911	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		912	#endif
		913	#if EV_USE_KQUEUE
		914	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		915	#endif
789	#if EV_USE_EPOLL	916	#if EV_USE_EPOLL
790	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	917	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
791	#endif
792	#if EV_USE_KQUEUE
793	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
794	#endif	918	#endif
795		919
796	if (ev_is_active (&sigev))	920	if (ev_is_active (&sigev))
797	{	921	{
798	/* default loop */	922	/* default loop */
…		…
811	postfork = 0;	935	postfork = 0;
812	}	936	}
813		937
814	#if EV_MULTIPLICITY	938	#if EV_MULTIPLICITY
815	struct ev_loop *	939	struct ev_loop *
816	ev_loop_new (int methods)	940	ev_loop_new (unsigned int flags)
817	{	941	{
818	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	942	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
819		943
820	memset (loop, 0, sizeof (struct ev_loop));	944	memset (loop, 0, sizeof (struct ev_loop));
821		945
822	loop_init (EV_A_ methods);	946	loop_init (EV_A_ flags);
823		947
824	if (ev_method (EV_A))	948	if (ev_backend (EV_A))
825	return loop;	949	return loop;
826		950
827	return 0;	951	return 0;
828	}	952	}
829		953
…		…
841	}	965	}
842		966
843	#endif	967	#endif
844		968
845	#if EV_MULTIPLICITY	969	#if EV_MULTIPLICITY
846	struct ev_loop default_loop_struct;
847	static struct ev_loop *default_loop;
848
849	struct ev_loop *	970	struct ev_loop *
		971	ev_default_loop_init (unsigned int flags)
850	#else	972	#else
851	static int default_loop;
852
853	int	973	int
		974	ev_default_loop (unsigned int flags)
854	#endif	975	#endif
855	ev_default_loop (int methods)
856	{	976	{
857	if (sigpipe [0] == sigpipe [1])	977	if (sigpipe [0] == sigpipe [1])
858	if (pipe (sigpipe))	978	if (pipe (sigpipe))
859	return 0;	979	return 0;
860		980
861	if (!default_loop)	981	if (!ev_default_loop_ptr)
862	{	982	{
863	#if EV_MULTIPLICITY	983	#if EV_MULTIPLICITY
864	struct ev_loop *loop = default_loop = &default_loop_struct;	984	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
865	#else	985	#else
866	default_loop = 1;	986	ev_default_loop_ptr = 1;
867	#endif	987	#endif
868		988
869	loop_init (EV_A_ methods);	989	loop_init (EV_A_ flags);
870		990
871	if (ev_method (EV_A))	991	if (ev_backend (EV_A))
872	{	992	{
873	siginit (EV_A);	993	siginit (EV_A);
874		994
875	#ifndef WIN32	995	#ifndef _WIN32
876	ev_signal_init (&childev, childcb, SIGCHLD);	996	ev_signal_init (&childev, childcb, SIGCHLD);
877	ev_set_priority (&childev, EV_MAXPRI);	997	ev_set_priority (&childev, EV_MAXPRI);
878	ev_signal_start (EV_A_ &childev);	998	ev_signal_start (EV_A_ &childev);
879	ev_unref (EV_A); /* child watcher should not keep loop alive */	999	ev_unref (EV_A); /* child watcher should not keep loop alive */
880	#endif	1000	#endif
881	}	1001	}
882	else	1002	else
883	default_loop = 0;	1003	ev_default_loop_ptr = 0;
884	}	1004	}
885		1005
886	return default_loop;	1006	return ev_default_loop_ptr;
887	}	1007	}
888		1008
889	void	1009	void
890	ev_default_destroy (void)	1010	ev_default_destroy (void)
891	{	1011	{
892	#if EV_MULTIPLICITY	1012	#if EV_MULTIPLICITY
893	struct ev_loop *loop = default_loop;	1013	struct ev_loop *loop = ev_default_loop_ptr;
894	#endif	1014	#endif
895		1015
896	#ifndef WIN32	1016	#ifndef _WIN32
897	ev_ref (EV_A); /* child watcher */	1017	ev_ref (EV_A); /* child watcher */
898	ev_signal_stop (EV_A_ &childev);	1018	ev_signal_stop (EV_A_ &childev);
899	#endif	1019	#endif
900		1020
901	ev_ref (EV_A); /* signal watcher */	1021	ev_ref (EV_A); /* signal watcher */
…		…
909		1029
910	void	1030	void
911	ev_default_fork (void)	1031	ev_default_fork (void)
912	{	1032	{
913	#if EV_MULTIPLICITY	1033	#if EV_MULTIPLICITY
914	struct ev_loop *loop = default_loop;	1034	struct ev_loop *loop = ev_default_loop_ptr;
915	#endif	1035	#endif
916		1036
917	if (method)	1037	if (backend)
918	postfork = 1;	1038	postfork = 1;
919	}	1039	}
920		1040
921	/*****************************************************************************/	1041	/*****************************************************************************/
922		1042
…		…
930	return 1;	1050	return 1;
931		1051
932	return 0;	1052	return 0;
933	}	1053	}
934		1054
935	static void	1055	inline void
936	call_pending (EV_P)	1056	call_pending (EV_P)
937	{	1057	{
938	int pri;	1058	int pri;
939		1059
940	for (pri = NUMPRI; pri--; )	1060	for (pri = NUMPRI; pri--; )
941	while (pendingcnt [pri])	1061	while (pendingcnt [pri])
942	{	1062	{
943	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1063	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
944		1064
945	if (p->w)	1065	if (expect_true (p->w))
946	{	1066	{
947	p->w->pending = 0;	1067	p->w->pending = 0;
948	p->w->cb (EV_A_ p->w, p->events);	1068	EV_CB_INVOKE (p->w, p->events);
949	}	1069	}
950	}	1070	}
951	}	1071	}
952		1072
953	static void	1073	inline void
954	timers_reify (EV_P)	1074	timers_reify (EV_P)
955	{	1075	{
956	while (timercnt && ((WT)timers [0])->at <= mn_now)	1076	while (timercnt && ((WT)timers [0])->at <= mn_now)
957	{	1077	{
958	struct ev_timer *w = timers [0];	1078	struct ev_timer *w = timers [0];
…		…
961		1081
962	/* first reschedule or stop timer */	1082	/* first reschedule or stop timer */
963	if (w->repeat)	1083	if (w->repeat)
964	{	1084	{
965	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1085	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1086
966	((WT)w)->at = mn_now + w->repeat;	1087	((WT)w)->at += w->repeat;
		1088	if (((WT)w)->at < mn_now)
		1089	((WT)w)->at = mn_now;
		1090
967	downheap ((WT *)timers, timercnt, 0);	1091	downheap ((WT *)timers, timercnt, 0);
968	}	1092	}
969	else	1093	else
970	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1094	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
971		1095
972	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1096	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
973	}	1097	}
974	}	1098	}
975		1099
976	static void	1100	#if EV_PERIODICS
		1101	inline void
977	periodics_reify (EV_P)	1102	periodics_reify (EV_P)
978	{	1103	{
979	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1104	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
980	{	1105	{
981	struct ev_periodic *w = periodics [0];	1106	struct ev_periodic *w = periodics [0];
982		1107
983	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1108	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
984		1109
985	/* first reschedule or stop timer */	1110	/* first reschedule or stop timer */
986	if (w->reschedule_cb)	1111	if (w->reschedule_cb)
987	{	1112	{
988	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);	1113	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
989
990	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));	1114	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
991	downheap ((WT *)periodics, periodiccnt, 0);	1115	downheap ((WT *)periodics, periodiccnt, 0);
992	}	1116	}
993	else if (w->interval)	1117	else if (w->interval)
994	{	1118	{
995	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1119	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
996	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1120	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
997	downheap ((WT *)periodics, periodiccnt, 0);	1121	downheap ((WT *)periodics, periodiccnt, 0);
998	}	1122	}
999	else	1123	else
1000	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1124	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1001		1125
…		…
1012	for (i = 0; i < periodiccnt; ++i)	1136	for (i = 0; i < periodiccnt; ++i)
1013	{	1137	{
1014	struct ev_periodic *w = periodics [i];	1138	struct ev_periodic *w = periodics [i];
1015		1139
1016	if (w->reschedule_cb)	1140	if (w->reschedule_cb)
1017	((WT)w)->at = w->reschedule_cb (w, rt_now);	1141	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1018	else if (w->interval)	1142	else if (w->interval)
1019	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1143	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1020	}	1144	}
1021		1145
1022	/* now rebuild the heap */	1146	/* now rebuild the heap */
1023	for (i = periodiccnt >> 1; i--; )	1147	for (i = periodiccnt >> 1; i--; )
1024	downheap ((WT *)periodics, periodiccnt, i);	1148	downheap ((WT *)periodics, periodiccnt, i);
1025	}	1149	}
		1150	#endif
1026		1151
1027	inline int	1152	inline int
1028	time_update_monotonic (EV_P)	1153	time_update_monotonic (EV_P)
1029	{	1154	{
1030	mn_now = get_clock ();	1155	mn_now = get_clock ();
1031		1156
1032	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1157	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1033	{	1158	{
1034	rt_now = rtmn_diff + mn_now;	1159	ev_rt_now = rtmn_diff + mn_now;
1035	return 0;	1160	return 0;
1036	}	1161	}
1037	else	1162	else
1038	{	1163	{
1039	now_floor = mn_now;	1164	now_floor = mn_now;
1040	rt_now = ev_time ();	1165	ev_rt_now = ev_time ();
1041	return 1;	1166	return 1;
1042	}	1167	}
1043	}	1168	}
1044		1169
1045	static void	1170	inline void
1046	time_update (EV_P)	1171	time_update (EV_P)
1047	{	1172	{
1048	int i;	1173	int i;
1049		1174
1050	#if EV_USE_MONOTONIC	1175	#if EV_USE_MONOTONIC
…		…
1054	{	1179	{
1055	ev_tstamp odiff = rtmn_diff;	1180	ev_tstamp odiff = rtmn_diff;
1056		1181
1057	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1182	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1058	{	1183	{
1059	rtmn_diff = rt_now - mn_now;	1184	rtmn_diff = ev_rt_now - mn_now;
1060		1185
1061	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1186	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1062	return; /* all is well */	1187	return; /* all is well */
1063		1188
1064	rt_now = ev_time ();	1189	ev_rt_now = ev_time ();
1065	mn_now = get_clock ();	1190	mn_now = get_clock ();
1066	now_floor = mn_now;	1191	now_floor = mn_now;
1067	}	1192	}
1068		1193
		1194	# if EV_PERIODICS
1069	periodics_reschedule (EV_A);	1195	periodics_reschedule (EV_A);
		1196	# endif
1070	/* no timer adjustment, as the monotonic clock doesn't jump */	1197	/* no timer adjustment, as the monotonic clock doesn't jump */
1071	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1198	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1072	}	1199	}
1073	}	1200	}
1074	else	1201	else
1075	#endif	1202	#endif
1076	{	1203	{
1077	rt_now = ev_time ();	1204	ev_rt_now = ev_time ();
1078		1205
1079	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1206	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1080	{	1207	{
		1208	#if EV_PERIODICS
1081	periodics_reschedule (EV_A);	1209	periodics_reschedule (EV_A);
		1210	#endif
1082		1211
1083	/* adjust timers. this is easy, as the offset is the same for all */	1212	/* adjust timers. this is easy, as the offset is the same for all */
1084	for (i = 0; i < timercnt; ++i)	1213	for (i = 0; i < timercnt; ++i)
1085	((WT)timers [i])->at += rt_now - mn_now;	1214	((WT)timers [i])->at += ev_rt_now - mn_now;
1086	}	1215	}
1087		1216
1088	mn_now = rt_now;	1217	mn_now = ev_rt_now;
1089	}	1218	}
1090	}	1219	}
1091		1220
1092	void	1221	void
1093	ev_ref (EV_P)	1222	ev_ref (EV_P)
…		…
1107	ev_loop (EV_P_ int flags)	1236	ev_loop (EV_P_ int flags)
1108	{	1237	{
1109	double block;	1238	double block;
1110	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1239	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
1111		1240
1112	do	1241	while (activecnt)
1113	{	1242	{
1114	/* queue check watchers (and execute them) */	1243	/* queue check watchers (and execute them) */
1115	if (expect_false (preparecnt))	1244	if (expect_false (preparecnt))
1116	{	1245	{
1117	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1246	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1133	if (expect_true (have_monotonic))	1262	if (expect_true (have_monotonic))
1134	time_update_monotonic (EV_A);	1263	time_update_monotonic (EV_A);
1135	else	1264	else
1136	#endif	1265	#endif
1137	{	1266	{
1138	rt_now = ev_time ();	1267	ev_rt_now = ev_time ();
1139	mn_now = rt_now;	1268	mn_now = ev_rt_now;
1140	}	1269	}
1141		1270
1142	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1271	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1143	block = 0.;	1272	block = 0.;
1144	else	1273	else
1145	{	1274	{
1146	block = MAX_BLOCKTIME;	1275	block = MAX_BLOCKTIME;
1147		1276
1148	if (timercnt)	1277	if (timercnt)
1149	{	1278	{
1150	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1279	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1151	if (block > to) block = to;	1280	if (block > to) block = to;
1152	}	1281	}
1153		1282
		1283	#if EV_PERIODICS
1154	if (periodiccnt)	1284	if (periodiccnt)
1155	{	1285	{
1156	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1286	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1157	if (block > to) block = to;	1287	if (block > to) block = to;
1158	}	1288	}
		1289	#endif
1159		1290
1160	if (block < 0.) block = 0.;	1291	if (expect_false (block < 0.)) block = 0.;
1161	}	1292	}
1162		1293
1163	method_poll (EV_A_ block);	1294	backend_poll (EV_A_ block);
1164		1295
1165	/* update rt_now, do magic */	1296	/* update ev_rt_now, do magic */
1166	time_update (EV_A);	1297	time_update (EV_A);
1167		1298
1168	/* queue pending timers and reschedule them */	1299	/* queue pending timers and reschedule them */
1169	timers_reify (EV_A); /* relative timers called last */	1300	timers_reify (EV_A); /* relative timers called last */
		1301	#if EV_PERIODICS
1170	periodics_reify (EV_A); /* absolute timers called first */	1302	periodics_reify (EV_A); /* absolute timers called first */
		1303	#endif
1171		1304
1172	/* queue idle watchers unless io or timers are pending */	1305	/* queue idle watchers unless io or timers are pending */
1173	if (idlecnt && !any_pending (EV_A))	1306	if (idlecnt && !any_pending (EV_A))
1174	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1307	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1175		1308
1176	/* queue check watchers, to be executed first */	1309	/* queue check watchers, to be executed first */
1177	if (checkcnt)	1310	if (expect_false (checkcnt))
1178	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1311	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1179		1312
1180	call_pending (EV_A);	1313	call_pending (EV_A);
		1314
		1315	if (expect_false (loop_done))
		1316	break;
1181	}	1317	}
1182	while (activecnt && !loop_done);
1183		1318
1184	if (loop_done != 2)	1319	if (loop_done != 2)
1185	loop_done = 0;	1320	loop_done = 0;
1186	}	1321	}
1187		1322
…		…
1247	void	1382	void
1248	ev_io_start (EV_P_ struct ev_io *w)	1383	ev_io_start (EV_P_ struct ev_io *w)
1249	{	1384	{
1250	int fd = w->fd;	1385	int fd = w->fd;
1251		1386
1252	if (ev_is_active (w))	1387	if (expect_false (ev_is_active (w)))
1253	return;	1388	return;
1254		1389
1255	assert (("ev_io_start called with negative fd", fd >= 0));	1390	assert (("ev_io_start called with negative fd", fd >= 0));
1256		1391
1257	ev_start (EV_A_ (W)w, 1);	1392	ev_start (EV_A_ (W)w, 1);
…		…
1263		1398
1264	void	1399	void
1265	ev_io_stop (EV_P_ struct ev_io *w)	1400	ev_io_stop (EV_P_ struct ev_io *w)
1266	{	1401	{
1267	ev_clear_pending (EV_A_ (W)w);	1402	ev_clear_pending (EV_A_ (W)w);
1268	if (!ev_is_active (w))	1403	if (expect_false (!ev_is_active (w)))
1269	return;	1404	return;
		1405
		1406	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1270		1407
1271	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1408	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1272	ev_stop (EV_A_ (W)w);	1409	ev_stop (EV_A_ (W)w);
1273		1410
1274	fd_change (EV_A_ w->fd);	1411	fd_change (EV_A_ w->fd);
1275	}	1412	}
1276		1413
1277	void	1414	void
1278	ev_timer_start (EV_P_ struct ev_timer *w)	1415	ev_timer_start (EV_P_ struct ev_timer *w)
1279	{	1416	{
1280	if (ev_is_active (w))	1417	if (expect_false (ev_is_active (w)))
1281	return;	1418	return;
1282		1419
1283	((WT)w)->at += mn_now;	1420	((WT)w)->at += mn_now;
1284		1421
1285	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1422	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1286		1423
1287	ev_start (EV_A_ (W)w, ++timercnt);	1424	ev_start (EV_A_ (W)w, ++timercnt);
1288	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1425	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1289	timers [timercnt - 1] = w;	1426	timers [timercnt - 1] = w;
1290	upheap ((WT *)timers, timercnt - 1);	1427	upheap ((WT *)timers, timercnt - 1);
1291		1428
1292	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1429	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1293	}	1430	}
1294		1431
1295	void	1432	void
1296	ev_timer_stop (EV_P_ struct ev_timer *w)	1433	ev_timer_stop (EV_P_ struct ev_timer *w)
1297	{	1434	{
1298	ev_clear_pending (EV_A_ (W)w);	1435	ev_clear_pending (EV_A_ (W)w);
1299	if (!ev_is_active (w))	1436	if (expect_false (!ev_is_active (w)))
1300	return;	1437	return;
1301		1438
1302	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1439	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1303		1440
1304	if (((W)w)->active < timercnt--)	1441	if (expect_true (((W)w)->active < timercnt--))
1305	{	1442	{
1306	timers [((W)w)->active - 1] = timers [timercnt];	1443	timers [((W)w)->active - 1] = timers [timercnt];
1307	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1444	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1308	}	1445	}
1309		1446
1310	((WT)w)->at = w->repeat;	1447	((WT)w)->at -= mn_now;
1311		1448
1312	ev_stop (EV_A_ (W)w);	1449	ev_stop (EV_A_ (W)w);
1313	}	1450	}
1314		1451
1315	void	1452	void
…		…
1318	if (ev_is_active (w))	1455	if (ev_is_active (w))
1319	{	1456	{
1320	if (w->repeat)	1457	if (w->repeat)
1321	{	1458	{
1322	((WT)w)->at = mn_now + w->repeat;	1459	((WT)w)->at = mn_now + w->repeat;
1323	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1460	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1324	}	1461	}
1325	else	1462	else
1326	ev_timer_stop (EV_A_ w);	1463	ev_timer_stop (EV_A_ w);
1327	}	1464	}
1328	else if (w->repeat)	1465	else if (w->repeat)
		1466	{
		1467	w->at = w->repeat;
1329	ev_timer_start (EV_A_ w);	1468	ev_timer_start (EV_A_ w);
		1469	}
1330	}	1470	}
1331		1471
		1472	#if EV_PERIODICS
1332	void	1473	void
1333	ev_periodic_start (EV_P_ struct ev_periodic *w)	1474	ev_periodic_start (EV_P_ struct ev_periodic *w)
1334	{	1475	{
1335	if (ev_is_active (w))	1476	if (expect_false (ev_is_active (w)))
1336	return;	1477	return;
1337		1478
1338	if (w->reschedule_cb)	1479	if (w->reschedule_cb)
1339	((WT)w)->at = w->reschedule_cb (w, rt_now);	1480	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1340	else if (w->interval)	1481	else if (w->interval)
1341	{	1482	{
1342	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1483	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1343	/* this formula differs from the one in periodic_reify because we do not always round up */	1484	/* this formula differs from the one in periodic_reify because we do not always round up */
1344	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1485	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1345	}	1486	}
1346		1487
1347	ev_start (EV_A_ (W)w, ++periodiccnt);	1488	ev_start (EV_A_ (W)w, ++periodiccnt);
1348	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1489	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1349	periodics [periodiccnt - 1] = w;	1490	periodics [periodiccnt - 1] = w;
1350	upheap ((WT *)periodics, periodiccnt - 1);	1491	upheap ((WT *)periodics, periodiccnt - 1);
1351		1492
1352	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1493	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1353	}	1494	}
1354		1495
1355	void	1496	void
1356	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1497	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1357	{	1498	{
1358	ev_clear_pending (EV_A_ (W)w);	1499	ev_clear_pending (EV_A_ (W)w);
1359	if (!ev_is_active (w))	1500	if (expect_false (!ev_is_active (w)))
1360	return;	1501	return;
1361		1502
1362	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1503	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1363		1504
1364	if (((W)w)->active < periodiccnt--)	1505	if (expect_true (((W)w)->active < periodiccnt--))
1365	{	1506	{
1366	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1507	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1367	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1508	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1368	}	1509	}
1369		1510
1370	ev_stop (EV_A_ (W)w);	1511	ev_stop (EV_A_ (W)w);
1371	}	1512	}
1372		1513
1373	void	1514	void
1374	ev_periodic_again (EV_P_ struct ev_periodic *w)	1515	ev_periodic_again (EV_P_ struct ev_periodic *w)
1375	{	1516	{
		1517	/* TODO: use adjustheap and recalculation */
1376	ev_periodic_stop (EV_A_ w);	1518	ev_periodic_stop (EV_A_ w);
1377	ev_periodic_start (EV_A_ w);	1519	ev_periodic_start (EV_A_ w);
1378	}	1520	}
		1521	#endif
1379		1522
1380	void	1523	void
1381	ev_idle_start (EV_P_ struct ev_idle *w)	1524	ev_idle_start (EV_P_ struct ev_idle *w)
1382	{	1525	{
1383	if (ev_is_active (w))	1526	if (expect_false (ev_is_active (w)))
1384	return;	1527	return;
1385		1528
1386	ev_start (EV_A_ (W)w, ++idlecnt);	1529	ev_start (EV_A_ (W)w, ++idlecnt);
1387	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));	1530	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1388	idles [idlecnt - 1] = w;	1531	idles [idlecnt - 1] = w;
1389	}	1532	}
1390		1533
1391	void	1534	void
1392	ev_idle_stop (EV_P_ struct ev_idle *w)	1535	ev_idle_stop (EV_P_ struct ev_idle *w)
1393	{	1536	{
1394	ev_clear_pending (EV_A_ (W)w);	1537	ev_clear_pending (EV_A_ (W)w);
1395	if (ev_is_active (w))	1538	if (expect_false (!ev_is_active (w)))
1396	return;	1539	return;
1397		1540
1398	idles [((W)w)->active - 1] = idles [--idlecnt];	1541	idles [((W)w)->active - 1] = idles [--idlecnt];
1399	ev_stop (EV_A_ (W)w);	1542	ev_stop (EV_A_ (W)w);
1400	}	1543	}
1401		1544
1402	void	1545	void
1403	ev_prepare_start (EV_P_ struct ev_prepare *w)	1546	ev_prepare_start (EV_P_ struct ev_prepare *w)
1404	{	1547	{
1405	if (ev_is_active (w))	1548	if (expect_false (ev_is_active (w)))
1406	return;	1549	return;
1407		1550
1408	ev_start (EV_A_ (W)w, ++preparecnt);	1551	ev_start (EV_A_ (W)w, ++preparecnt);
1409	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));	1552	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1410	prepares [preparecnt - 1] = w;	1553	prepares [preparecnt - 1] = w;
1411	}	1554	}
1412		1555
1413	void	1556	void
1414	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1557	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1415	{	1558	{
1416	ev_clear_pending (EV_A_ (W)w);	1559	ev_clear_pending (EV_A_ (W)w);
1417	if (ev_is_active (w))	1560	if (expect_false (!ev_is_active (w)))
1418	return;	1561	return;
1419		1562
1420	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1563	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1421	ev_stop (EV_A_ (W)w);	1564	ev_stop (EV_A_ (W)w);
1422	}	1565	}
1423		1566
1424	void	1567	void
1425	ev_check_start (EV_P_ struct ev_check *w)	1568	ev_check_start (EV_P_ struct ev_check *w)
1426	{	1569	{
1427	if (ev_is_active (w))	1570	if (expect_false (ev_is_active (w)))
1428	return;	1571	return;
1429		1572
1430	ev_start (EV_A_ (W)w, ++checkcnt);	1573	ev_start (EV_A_ (W)w, ++checkcnt);
1431	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));	1574	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1432	checks [checkcnt - 1] = w;	1575	checks [checkcnt - 1] = w;
1433	}	1576	}
1434		1577
1435	void	1578	void
1436	ev_check_stop (EV_P_ struct ev_check *w)	1579	ev_check_stop (EV_P_ struct ev_check *w)
1437	{	1580	{
1438	ev_clear_pending (EV_A_ (W)w);	1581	ev_clear_pending (EV_A_ (W)w);
1439	if (ev_is_active (w))	1582	if (expect_false (!ev_is_active (w)))
1440	return;	1583	return;
1441		1584
1442	checks [((W)w)->active - 1] = checks [--checkcnt];	1585	checks [((W)w)->active - 1] = checks [--checkcnt];
1443	ev_stop (EV_A_ (W)w);	1586	ev_stop (EV_A_ (W)w);
1444	}	1587	}
…		…
1449		1592
1450	void	1593	void
1451	ev_signal_start (EV_P_ struct ev_signal *w)	1594	ev_signal_start (EV_P_ struct ev_signal *w)
1452	{	1595	{
1453	#if EV_MULTIPLICITY	1596	#if EV_MULTIPLICITY
1454	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1597	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1455	#endif	1598	#endif
1456	if (ev_is_active (w))	1599	if (expect_false (ev_is_active (w)))
1457	return;	1600	return;
1458		1601
1459	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1602	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1460		1603
1461	ev_start (EV_A_ (W)w, 1);	1604	ev_start (EV_A_ (W)w, 1);
1462	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1605	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1463	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1606	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1464		1607
1465	if (!((WL)w)->next)	1608	if (!((WL)w)->next)
1466	{	1609	{
1467	#if WIN32	1610	#if _WIN32
1468	signal (w->signum, sighandler);	1611	signal (w->signum, sighandler);
1469	#else	1612	#else
1470	struct sigaction sa;	1613	struct sigaction sa;
1471	sa.sa_handler = sighandler;	1614	sa.sa_handler = sighandler;
1472	sigfillset (&sa.sa_mask);	1615	sigfillset (&sa.sa_mask);
…		…
1478		1621
1479	void	1622	void
1480	ev_signal_stop (EV_P_ struct ev_signal *w)	1623	ev_signal_stop (EV_P_ struct ev_signal *w)
1481	{	1624	{
1482	ev_clear_pending (EV_A_ (W)w);	1625	ev_clear_pending (EV_A_ (W)w);
1483	if (!ev_is_active (w))	1626	if (expect_false (!ev_is_active (w)))
1484	return;	1627	return;
1485		1628
1486	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1629	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1487	ev_stop (EV_A_ (W)w);	1630	ev_stop (EV_A_ (W)w);
1488		1631
…		…
1492		1635
1493	void	1636	void
1494	ev_child_start (EV_P_ struct ev_child *w)	1637	ev_child_start (EV_P_ struct ev_child *w)
1495	{	1638	{
1496	#if EV_MULTIPLICITY	1639	#if EV_MULTIPLICITY
1497	assert (("child watchers are only supported in the default loop", loop == default_loop));	1640	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1498	#endif	1641	#endif
1499	if (ev_is_active (w))	1642	if (expect_false (ev_is_active (w)))
1500	return;	1643	return;
1501		1644
1502	ev_start (EV_A_ (W)w, 1);	1645	ev_start (EV_A_ (W)w, 1);
1503	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1646	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1504	}	1647	}
1505		1648
1506	void	1649	void
1507	ev_child_stop (EV_P_ struct ev_child *w)	1650	ev_child_stop (EV_P_ struct ev_child *w)
1508	{	1651	{
1509	ev_clear_pending (EV_A_ (W)w);	1652	ev_clear_pending (EV_A_ (W)w);
1510	if (ev_is_active (w))	1653	if (expect_false (!ev_is_active (w)))
1511	return;	1654	return;
1512		1655
1513	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1656	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1514	ev_stop (EV_A_ (W)w);	1657	ev_stop (EV_A_ (W)w);
1515	}	1658	}
…		…
1552	void	1695	void
1553	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1696	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1554	{	1697	{
1555	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));	1698	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1556		1699
1557	if (!once)	1700	if (expect_false (!once))
		1701	{
1558	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1702	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1559	else	1703	return;
1560	{	1704	}
		1705
1561	once->cb = cb;	1706	once->cb = cb;
1562	once->arg = arg;	1707	once->arg = arg;
1563		1708
1564	ev_watcher_init (&once->io, once_cb_io);	1709	ev_init (&once->io, once_cb_io);
1565	if (fd >= 0)	1710	if (fd >= 0)
1566	{	1711	{
1567	ev_io_set (&once->io, fd, events);	1712	ev_io_set (&once->io, fd, events);
1568	ev_io_start (EV_A_ &once->io);	1713	ev_io_start (EV_A_ &once->io);
1569	}	1714	}
1570		1715
1571	ev_watcher_init (&once->to, once_cb_to);	1716	ev_init (&once->to, once_cb_to);
1572	if (timeout >= 0.)	1717	if (timeout >= 0.)
1573	{	1718	{
1574	ev_timer_set (&once->to, timeout, 0.);	1719	ev_timer_set (&once->to, timeout, 0.);
1575	ev_timer_start (EV_A_ &once->to);	1720	ev_timer_start (EV_A_ &once->to);
1576	}
1577	}	1721	}
1578	}	1722	}
1579		1723
		1724	#ifdef __cplusplus
		1725	}
		1726	#endif
		1727

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Comparing libev/ev.c (file contents): Revision 1.79 by root, Fri Nov 9 15:15:20 2007 UTC vs. Revision 1.132 by root, Fri Nov 23 10:36:30 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.79 by root, Fri Nov 9 15:15:20 2007 UTC vs.
Revision 1.132 by root, Fri Nov 23 10:36:30 2007 UTC