[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 1.129 by root, Fri Nov 23 05:00:44 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	method_modify (EV_A_ fd, anfd->events, events);
389	anfd->events = events;	464	anfd->events = events;
390	}	465	}
…		…
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
…		…
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
…		…
657		738
658	#endif	739	#endif
659		740
660	/*****************************************************************************/	741	/*****************************************************************************/
661		742
		743	#if EV_USE_PORT
		744	# include "ev_port.c"
		745	#endif
662	#if EV_USE_KQUEUE	746	#if EV_USE_KQUEUE
663	# include "ev_kqueue.c"	747	# include "ev_kqueue.c"
664	#endif	748	#endif
665	#if EV_USE_EPOLL	749	#if EV_USE_EPOLL
666	# include "ev_epoll.c"	750	# include "ev_epoll.c"
…		…
686		770
687	/* return true if we are running with elevated privileges and should ignore env variables */	771	/* return true if we are running with elevated privileges and should ignore env variables */
688	static int	772	static int
689	enable_secure (void)	773	enable_secure (void)
690	{	774	{
691	#ifdef WIN32	775	#ifdef _WIN32
692	return 0;	776	return 0;
693	#else	777	#else
694	return getuid () != geteuid ()	778	return getuid () != geteuid ()
695	\|\| getgid () != getegid ();	779	\|\| getgid () != getegid ();
696	#endif	780	#endif
697	}	781	}
698		782
699	int	783	unsigned int
700	ev_method (EV_P)	784	ev_supported_backends (void)
701	{	785	{
702	return method;
703	}	786	}
704		787
		788	unsigned int
		789	ev_recommended_backends (void)
		790	{
		791	unsigned int flags;
		792
		793	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
		794	if (EV_USE_KQUEUE) flags \|= EVBACKEND_KQUEUE;
		795	if (EV_USE_EPOLL ) flags \|= EVBACKEND_EPOLL;
		796	if (EV_USE_POLL ) flags \|= EVBACKEND_POLL;
		797	if (EV_USE_SELECT) flags \|= EVBACKEND_SELECT;
		798
		799	return flags;
		800	}
		801
		802	unsigned int
		803	ev_backend (EV_P)
		804	{
		805	unsigned int flags = ev_recommended_backends ();
		806
		807	#ifndef __NetBSD__
		808	/* kqueue is borked on everything but netbsd apparently */
		809	/* it usually doesn't work correctly on anything but sockets and pipes */
		810	flags &= ~EVBACKEND_KQUEUE;
		811	#endif
		812	#ifdef __APPLE__
		813	// flags &= ~EVBACKEND_KQUEUE; for documentation
		814	flags &= ~EVBACKEND_POLL;
		815	#endif
		816
		817	return flags;
		818	}
		819
705	static void	820	static void
706	loop_init (EV_P_ int methods)	821	loop_init (EV_P_ unsigned int flags)
707	{	822	{
708	if (!method)	823	if (!method)
709	{	824	{
710	#if EV_USE_MONOTONIC	825	#if EV_USE_MONOTONIC
711	{	826	{
…		…
713	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	828	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
714	have_monotonic = 1;	829	have_monotonic = 1;
715	}	830	}
716	#endif	831	#endif
717		832
718	rt_now = ev_time ();	833	ev_rt_now = ev_time ();
719	mn_now = get_clock ();	834	mn_now = get_clock ();
720	now_floor = mn_now;	835	now_floor = mn_now;
721	rtmn_diff = rt_now - mn_now;	836	rtmn_diff = ev_rt_now - mn_now;
722		837
723	if (methods == EVMETHOD_AUTO)	838	if (!(flags & EVFLAG_NOENV)
724	if (!enable_secure () && getenv ("LIBEV_METHODS"))	839	&& !enable_secure ()
		840	&& getenv ("LIBEV_FLAGS"))
725	methods = atoi (getenv ("LIBEV_METHODS"));	841	flags = atoi (getenv ("LIBEV_FLAGS"));
726	else	842
727	methods = EVMETHOD_ANY;	843	if (!(flags & 0x0000ffffUL))
		844	flags \|= ev_recommended_backends ();
728		845
729	method = 0;	846	method = 0;
730	#if EV_USE_WIN32	847	#if EV_USE_PORT
731	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	848	if (!method && (flags & EVBACKEND_PORT )) method = port_init (EV_A_ flags);
732	#endif	849	#endif
733	#if EV_USE_KQUEUE	850	#if EV_USE_KQUEUE
734	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	851	if (!method && (flags & EVBACKEND_KQUEUE)) method = kqueue_init (EV_A_ flags);
735	#endif	852	#endif
736	#if EV_USE_EPOLL	853	#if EV_USE_EPOLL
737	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	854	if (!method && (flags & EVBACKEND_EPOLL )) method = epoll_init (EV_A_ flags);
738	#endif	855	#endif
739	#if EV_USE_POLL	856	#if EV_USE_POLL
740	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	857	if (!method && (flags & EVBACKEND_POLL )) method = poll_init (EV_A_ flags);
741	#endif	858	#endif
742	#if EV_USE_SELECT	859	#if EV_USE_SELECT
743	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	860	if (!method && (flags & EVBACKEND_SELECT)) method = select_init (EV_A_ flags);
744	#endif	861	#endif
745		862
746	ev_watcher_init (&sigev, sigcb);	863	ev_init (&sigev, sigcb);
747	ev_set_priority (&sigev, EV_MAXPRI);	864	ev_set_priority (&sigev, EV_MAXPRI);
748	}	865	}
749	}	866	}
750		867
751	void	868	static void
752	loop_destroy (EV_P)	869	loop_destroy (EV_P)
753	{	870	{
754	int i;	871	int i;
755		872
756	#if EV_USE_WIN32	873	#if EV_USE_PORT
757	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	874	if (method == EVBACKEND_PORT ) port_destroy (EV_A);
758	#endif	875	#endif
759	#if EV_USE_KQUEUE	876	#if EV_USE_KQUEUE
760	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	877	if (method == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
761	#endif	878	#endif
762	#if EV_USE_EPOLL	879	#if EV_USE_EPOLL
763	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	880	if (method == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
764	#endif	881	#endif
765	#if EV_USE_POLL	882	#if EV_USE_POLL
766	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	883	if (method == EVBACKEND_POLL ) poll_destroy (EV_A);
767	#endif	884	#endif
768	#if EV_USE_SELECT	885	#if EV_USE_SELECT
769	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	886	if (method == EVBACKEND_SELECT) select_destroy (EV_A);
770	#endif	887	#endif
771		888
772	for (i = NUMPRI; i--; )	889	for (i = NUMPRI; i--; )
773	array_free (pending, [i]);	890	array_free (pending, [i]);
774		891
775	/* have to use the microsoft-never-gets-it-right macro */	892	/* have to use the microsoft-never-gets-it-right macro */
776	array_free_microshit (fdchange);	893	array_free (fdchange, EMPTY0);
777	array_free_microshit (timer);	894	array_free (timer, EMPTY0);
778	array_free_microshit (periodic);	895	#if EV_PERIODICS
779	array_free_microshit (idle);	896	array_free (periodic, EMPTY0);
780	array_free_microshit (prepare);	897	#endif
781	array_free_microshit (check);	898	array_free (idle, EMPTY0);
		899	array_free (prepare, EMPTY0);
		900	array_free (check, EMPTY0);
782		901
783	method = 0;	902	method = 0;
784	}	903	}
785		904
786	static void	905	static void
787	loop_fork (EV_P)	906	loop_fork (EV_P)
788	{	907	{
		908	#if EV_USE_PORT
		909	if (method == EVBACKEND_PORT ) port_fork (EV_A);
		910	#endif
		911	#if EV_USE_KQUEUE
		912	if (method == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		913	#endif
789	#if EV_USE_EPOLL	914	#if EV_USE_EPOLL
790	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	915	if (method == EVBACKEND_EPOLL ) epoll_fork (EV_A);
791	#endif
792	#if EV_USE_KQUEUE
793	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
794	#endif	916	#endif
795		917
796	if (ev_is_active (&sigev))	918	if (ev_is_active (&sigev))
797	{	919	{
798	/* default loop */	920	/* default loop */
…		…
811	postfork = 0;	933	postfork = 0;
812	}	934	}
813		935
814	#if EV_MULTIPLICITY	936	#if EV_MULTIPLICITY
815	struct ev_loop *	937	struct ev_loop *
816	ev_loop_new (int methods)	938	ev_loop_new (unsigned int flags)
817	{	939	{
818	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	940	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
819		941
820	memset (loop, 0, sizeof (struct ev_loop));	942	memset (loop, 0, sizeof (struct ev_loop));
821		943
822	loop_init (EV_A_ methods);	944	loop_init (EV_A_ flags);
823		945
824	if (ev_method (EV_A))	946	if (ev_method (EV_A))
825	return loop;	947	return loop;
826		948
827	return 0;	949	return 0;
…		…
841	}	963	}
842		964
843	#endif	965	#endif
844		966
845	#if EV_MULTIPLICITY	967	#if EV_MULTIPLICITY
846	struct ev_loop default_loop_struct;
847	static struct ev_loop *default_loop;
848
849	struct ev_loop *	968	struct ev_loop *
		969	ev_default_loop_init (unsigned int flags)
850	#else	970	#else
851	static int default_loop;
852
853	int	971	int
		972	ev_default_loop (unsigned int flags)
854	#endif	973	#endif
855	ev_default_loop (int methods)
856	{	974	{
857	if (sigpipe [0] == sigpipe [1])	975	if (sigpipe [0] == sigpipe [1])
858	if (pipe (sigpipe))	976	if (pipe (sigpipe))
859	return 0;	977	return 0;
860		978
861	if (!default_loop)	979	if (!ev_default_loop_ptr)
862	{	980	{
863	#if EV_MULTIPLICITY	981	#if EV_MULTIPLICITY
864	struct ev_loop *loop = default_loop = &default_loop_struct;	982	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
865	#else	983	#else
866	default_loop = 1;	984	ev_default_loop_ptr = 1;
867	#endif	985	#endif
868		986
869	loop_init (EV_A_ methods);	987	loop_init (EV_A_ flags);
870		988
871	if (ev_method (EV_A))	989	if (ev_method (EV_A))
872	{	990	{
873	siginit (EV_A);	991	siginit (EV_A);
874		992
875	#ifndef WIN32	993	#ifndef _WIN32
876	ev_signal_init (&childev, childcb, SIGCHLD);	994	ev_signal_init (&childev, childcb, SIGCHLD);
877	ev_set_priority (&childev, EV_MAXPRI);	995	ev_set_priority (&childev, EV_MAXPRI);
878	ev_signal_start (EV_A_ &childev);	996	ev_signal_start (EV_A_ &childev);
879	ev_unref (EV_A); /* child watcher should not keep loop alive */	997	ev_unref (EV_A); /* child watcher should not keep loop alive */
880	#endif	998	#endif
881	}	999	}
882	else	1000	else
883	default_loop = 0;	1001	ev_default_loop_ptr = 0;
884	}	1002	}
885		1003
886	return default_loop;	1004	return ev_default_loop_ptr;
887	}	1005	}
888		1006
889	void	1007	void
890	ev_default_destroy (void)	1008	ev_default_destroy (void)
891	{	1009	{
892	#if EV_MULTIPLICITY	1010	#if EV_MULTIPLICITY
893	struct ev_loop *loop = default_loop;	1011	struct ev_loop *loop = ev_default_loop_ptr;
894	#endif	1012	#endif
895		1013
896	#ifndef WIN32	1014	#ifndef _WIN32
897	ev_ref (EV_A); /* child watcher */	1015	ev_ref (EV_A); /* child watcher */
898	ev_signal_stop (EV_A_ &childev);	1016	ev_signal_stop (EV_A_ &childev);
899	#endif	1017	#endif
900		1018
901	ev_ref (EV_A); /* signal watcher */	1019	ev_ref (EV_A); /* signal watcher */
…		…
909		1027
910	void	1028	void
911	ev_default_fork (void)	1029	ev_default_fork (void)
912	{	1030	{
913	#if EV_MULTIPLICITY	1031	#if EV_MULTIPLICITY
914	struct ev_loop *loop = default_loop;	1032	struct ev_loop *loop = ev_default_loop_ptr;
915	#endif	1033	#endif
916		1034
917	if (method)	1035	if (method)
918	postfork = 1;	1036	postfork = 1;
919	}	1037	}
…		…
930	return 1;	1048	return 1;
931		1049
932	return 0;	1050	return 0;
933	}	1051	}
934		1052
935	static void	1053	inline void
936	call_pending (EV_P)	1054	call_pending (EV_P)
937	{	1055	{
938	int pri;	1056	int pri;
939		1057
940	for (pri = NUMPRI; pri--; )	1058	for (pri = NUMPRI; pri--; )
941	while (pendingcnt [pri])	1059	while (pendingcnt [pri])
942	{	1060	{
943	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1061	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
944		1062
945	if (p->w)	1063	if (expect_true (p->w))
946	{	1064	{
947	p->w->pending = 0;	1065	p->w->pending = 0;
948	p->w->cb (EV_A_ p->w, p->events);	1066	EV_CB_INVOKE (p->w, p->events);
949	}	1067	}
950	}	1068	}
951	}	1069	}
952		1070
953	static void	1071	inline void
954	timers_reify (EV_P)	1072	timers_reify (EV_P)
955	{	1073	{
956	while (timercnt && ((WT)timers [0])->at <= mn_now)	1074	while (timercnt && ((WT)timers [0])->at <= mn_now)
957	{	1075	{
958	struct ev_timer *w = timers [0];	1076	struct ev_timer *w = timers [0];
…		…
961		1079
962	/* first reschedule or stop timer */	1080	/* first reschedule or stop timer */
963	if (w->repeat)	1081	if (w->repeat)
964	{	1082	{
965	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1083	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1084
966	((WT)w)->at = mn_now + w->repeat;	1085	((WT)w)->at += w->repeat;
		1086	if (((WT)w)->at < mn_now)
		1087	((WT)w)->at = mn_now;
		1088
967	downheap ((WT *)timers, timercnt, 0);	1089	downheap ((WT *)timers, timercnt, 0);
968	}	1090	}
969	else	1091	else
970	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1092	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
971		1093
972	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1094	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
973	}	1095	}
974	}	1096	}
975		1097
976	static void	1098	#if EV_PERIODICS
		1099	inline void
977	periodics_reify (EV_P)	1100	periodics_reify (EV_P)
978	{	1101	{
979	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1102	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
980	{	1103	{
981	struct ev_periodic *w = periodics [0];	1104	struct ev_periodic *w = periodics [0];
982		1105
983	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1106	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
984		1107
985	/* first reschedule or stop timer */	1108	/* first reschedule or stop timer */
986	if (w->reschedule_cb)	1109	if (w->reschedule_cb)
987	{	1110	{
988	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);	1111	((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));	1112	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
991	downheap ((WT *)periodics, periodiccnt, 0);	1113	downheap ((WT *)periodics, periodiccnt, 0);
992	}	1114	}
993	else if (w->interval)	1115	else if (w->interval)
994	{	1116	{
995	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1117	((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));	1118	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);	1119	downheap ((WT *)periodics, periodiccnt, 0);
998	}	1120	}
999	else	1121	else
1000	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1122	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1001		1123
…		…
1012	for (i = 0; i < periodiccnt; ++i)	1134	for (i = 0; i < periodiccnt; ++i)
1013	{	1135	{
1014	struct ev_periodic *w = periodics [i];	1136	struct ev_periodic *w = periodics [i];
1015		1137
1016	if (w->reschedule_cb)	1138	if (w->reschedule_cb)
1017	((WT)w)->at = w->reschedule_cb (w, rt_now);	1139	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1018	else if (w->interval)	1140	else if (w->interval)
1019	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1141	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1020	}	1142	}
1021		1143
1022	/* now rebuild the heap */	1144	/* now rebuild the heap */
1023	for (i = periodiccnt >> 1; i--; )	1145	for (i = periodiccnt >> 1; i--; )
1024	downheap ((WT *)periodics, periodiccnt, i);	1146	downheap ((WT *)periodics, periodiccnt, i);
1025	}	1147	}
		1148	#endif
1026		1149
1027	inline int	1150	inline int
1028	time_update_monotonic (EV_P)	1151	time_update_monotonic (EV_P)
1029	{	1152	{
1030	mn_now = get_clock ();	1153	mn_now = get_clock ();
1031		1154
1032	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1155	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1033	{	1156	{
1034	rt_now = rtmn_diff + mn_now;	1157	ev_rt_now = rtmn_diff + mn_now;
1035	return 0;	1158	return 0;
1036	}	1159	}
1037	else	1160	else
1038	{	1161	{
1039	now_floor = mn_now;	1162	now_floor = mn_now;
1040	rt_now = ev_time ();	1163	ev_rt_now = ev_time ();
1041	return 1;	1164	return 1;
1042	}	1165	}
1043	}	1166	}
1044		1167
1045	static void	1168	inline void
1046	time_update (EV_P)	1169	time_update (EV_P)
1047	{	1170	{
1048	int i;	1171	int i;
1049		1172
1050	#if EV_USE_MONOTONIC	1173	#if EV_USE_MONOTONIC
…		…
1054	{	1177	{
1055	ev_tstamp odiff = rtmn_diff;	1178	ev_tstamp odiff = rtmn_diff;
1056		1179
1057	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1180	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1058	{	1181	{
1059	rtmn_diff = rt_now - mn_now;	1182	rtmn_diff = ev_rt_now - mn_now;
1060		1183
1061	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1184	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1062	return; /* all is well */	1185	return; /* all is well */
1063		1186
1064	rt_now = ev_time ();	1187	ev_rt_now = ev_time ();
1065	mn_now = get_clock ();	1188	mn_now = get_clock ();
1066	now_floor = mn_now;	1189	now_floor = mn_now;
1067	}	1190	}
1068		1191
		1192	# if EV_PERIODICS
1069	periodics_reschedule (EV_A);	1193	periodics_reschedule (EV_A);
		1194	# endif
1070	/* no timer adjustment, as the monotonic clock doesn't jump */	1195	/* no timer adjustment, as the monotonic clock doesn't jump */
1071	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1196	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1072	}	1197	}
1073	}	1198	}
1074	else	1199	else
1075	#endif	1200	#endif
1076	{	1201	{
1077	rt_now = ev_time ();	1202	ev_rt_now = ev_time ();
1078		1203
1079	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1204	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1080	{	1205	{
		1206	#if EV_PERIODICS
1081	periodics_reschedule (EV_A);	1207	periodics_reschedule (EV_A);
		1208	#endif
1082		1209
1083	/* adjust timers. this is easy, as the offset is the same for all */	1210	/* adjust timers. this is easy, as the offset is the same for all */
1084	for (i = 0; i < timercnt; ++i)	1211	for (i = 0; i < timercnt; ++i)
1085	((WT)timers [i])->at += rt_now - mn_now;	1212	((WT)timers [i])->at += ev_rt_now - mn_now;
1086	}	1213	}
1087		1214
1088	mn_now = rt_now;	1215	mn_now = ev_rt_now;
1089	}	1216	}
1090	}	1217	}
1091		1218
1092	void	1219	void
1093	ev_ref (EV_P)	1220	ev_ref (EV_P)
…		…
1107	ev_loop (EV_P_ int flags)	1234	ev_loop (EV_P_ int flags)
1108	{	1235	{
1109	double block;	1236	double block;
1110	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1237	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
1111		1238
1112	do	1239	while (activecnt)
1113	{	1240	{
1114	/* queue check watchers (and execute them) */	1241	/* queue check watchers (and execute them) */
1115	if (expect_false (preparecnt))	1242	if (expect_false (preparecnt))
1116	{	1243	{
1117	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1244	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1133	if (expect_true (have_monotonic))	1260	if (expect_true (have_monotonic))
1134	time_update_monotonic (EV_A);	1261	time_update_monotonic (EV_A);
1135	else	1262	else
1136	#endif	1263	#endif
1137	{	1264	{
1138	rt_now = ev_time ();	1265	ev_rt_now = ev_time ();
1139	mn_now = rt_now;	1266	mn_now = ev_rt_now;
1140	}	1267	}
1141		1268
1142	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1269	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1143	block = 0.;	1270	block = 0.;
1144	else	1271	else
…		…
1149	{	1276	{
1150	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1277	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
1151	if (block > to) block = to;	1278	if (block > to) block = to;
1152	}	1279	}
1153		1280
		1281	#if EV_PERIODICS
1154	if (periodiccnt)	1282	if (periodiccnt)
1155	{	1283	{
1156	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1284	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
1157	if (block > to) block = to;	1285	if (block > to) block = to;
1158	}	1286	}
		1287	#endif
1159		1288
1160	if (block < 0.) block = 0.;	1289	if (expect_false (block < 0.)) block = 0.;
1161	}	1290	}
1162		1291
1163	method_poll (EV_A_ block);	1292	method_poll (EV_A_ block);
1164		1293
1165	/* update rt_now, do magic */	1294	/* update ev_rt_now, do magic */
1166	time_update (EV_A);	1295	time_update (EV_A);
1167		1296
1168	/* queue pending timers and reschedule them */	1297	/* queue pending timers and reschedule them */
1169	timers_reify (EV_A); /* relative timers called last */	1298	timers_reify (EV_A); /* relative timers called last */
		1299	#if EV_PERIODICS
1170	periodics_reify (EV_A); /* absolute timers called first */	1300	periodics_reify (EV_A); /* absolute timers called first */
		1301	#endif
1171		1302
1172	/* queue idle watchers unless io or timers are pending */	1303	/* queue idle watchers unless io or timers are pending */
1173	if (idlecnt && !any_pending (EV_A))	1304	if (idlecnt && !any_pending (EV_A))
1174	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1305	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1175		1306
1176	/* queue check watchers, to be executed first */	1307	/* queue check watchers, to be executed first */
1177	if (checkcnt)	1308	if (expect_false (checkcnt))
1178	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1309	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1179		1310
1180	call_pending (EV_A);	1311	call_pending (EV_A);
		1312
		1313	if (expect_false (loop_done))
		1314	break;
1181	}	1315	}
1182	while (activecnt && !loop_done);
1183		1316
1184	if (loop_done != 2)	1317	if (loop_done != 2)
1185	loop_done = 0;	1318	loop_done = 0;
1186	}	1319	}
1187		1320
…		…
1247	void	1380	void
1248	ev_io_start (EV_P_ struct ev_io *w)	1381	ev_io_start (EV_P_ struct ev_io *w)
1249	{	1382	{
1250	int fd = w->fd;	1383	int fd = w->fd;
1251		1384
1252	if (ev_is_active (w))	1385	if (expect_false (ev_is_active (w)))
1253	return;	1386	return;
1254		1387
1255	assert (("ev_io_start called with negative fd", fd >= 0));	1388	assert (("ev_io_start called with negative fd", fd >= 0));
1256		1389
1257	ev_start (EV_A_ (W)w, 1);	1390	ev_start (EV_A_ (W)w, 1);
…		…
1263		1396
1264	void	1397	void
1265	ev_io_stop (EV_P_ struct ev_io *w)	1398	ev_io_stop (EV_P_ struct ev_io *w)
1266	{	1399	{
1267	ev_clear_pending (EV_A_ (W)w);	1400	ev_clear_pending (EV_A_ (W)w);
1268	if (!ev_is_active (w))	1401	if (expect_false (!ev_is_active (w)))
1269	return;	1402	return;
		1403
		1404	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1270		1405
1271	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1406	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1272	ev_stop (EV_A_ (W)w);	1407	ev_stop (EV_A_ (W)w);
1273		1408
1274	fd_change (EV_A_ w->fd);	1409	fd_change (EV_A_ w->fd);
1275	}	1410	}
1276		1411
1277	void	1412	void
1278	ev_timer_start (EV_P_ struct ev_timer *w)	1413	ev_timer_start (EV_P_ struct ev_timer *w)
1279	{	1414	{
1280	if (ev_is_active (w))	1415	if (expect_false (ev_is_active (w)))
1281	return;	1416	return;
1282		1417
1283	((WT)w)->at += mn_now;	1418	((WT)w)->at += mn_now;
1284		1419
1285	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1420	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1286		1421
1287	ev_start (EV_A_ (W)w, ++timercnt);	1422	ev_start (EV_A_ (W)w, ++timercnt);
1288	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1423	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1289	timers [timercnt - 1] = w;	1424	timers [timercnt - 1] = w;
1290	upheap ((WT *)timers, timercnt - 1);	1425	upheap ((WT *)timers, timercnt - 1);
1291		1426
1292	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1427	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1293	}	1428	}
1294		1429
1295	void	1430	void
1296	ev_timer_stop (EV_P_ struct ev_timer *w)	1431	ev_timer_stop (EV_P_ struct ev_timer *w)
1297	{	1432	{
1298	ev_clear_pending (EV_A_ (W)w);	1433	ev_clear_pending (EV_A_ (W)w);
1299	if (!ev_is_active (w))	1434	if (expect_false (!ev_is_active (w)))
1300	return;	1435	return;
1301		1436
1302	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1437	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1303		1438
1304	if (((W)w)->active < timercnt--)	1439	if (expect_true (((W)w)->active < timercnt--))
1305	{	1440	{
1306	timers [((W)w)->active - 1] = timers [timercnt];	1441	timers [((W)w)->active - 1] = timers [timercnt];
1307	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1442	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1308	}	1443	}
1309		1444
1310	((WT)w)->at = w->repeat;	1445	((WT)w)->at -= mn_now;
1311		1446
1312	ev_stop (EV_A_ (W)w);	1447	ev_stop (EV_A_ (W)w);
1313	}	1448	}
1314		1449
1315	void	1450	void
…		…
1318	if (ev_is_active (w))	1453	if (ev_is_active (w))
1319	{	1454	{
1320	if (w->repeat)	1455	if (w->repeat)
1321	{	1456	{
1322	((WT)w)->at = mn_now + w->repeat;	1457	((WT)w)->at = mn_now + w->repeat;
1323	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1458	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1324	}	1459	}
1325	else	1460	else
1326	ev_timer_stop (EV_A_ w);	1461	ev_timer_stop (EV_A_ w);
1327	}	1462	}
1328	else if (w->repeat)	1463	else if (w->repeat)
		1464	{
		1465	w->at = w->repeat;
1329	ev_timer_start (EV_A_ w);	1466	ev_timer_start (EV_A_ w);
		1467	}
1330	}	1468	}
1331		1469
		1470	#if EV_PERIODICS
1332	void	1471	void
1333	ev_periodic_start (EV_P_ struct ev_periodic *w)	1472	ev_periodic_start (EV_P_ struct ev_periodic *w)
1334	{	1473	{
1335	if (ev_is_active (w))	1474	if (expect_false (ev_is_active (w)))
1336	return;	1475	return;
1337		1476
1338	if (w->reschedule_cb)	1477	if (w->reschedule_cb)
1339	((WT)w)->at = w->reschedule_cb (w, rt_now);	1478	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1340	else if (w->interval)	1479	else if (w->interval)
1341	{	1480	{
1342	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1481	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 */	1482	/* 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;	1483	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1345	}	1484	}
1346		1485
1347	ev_start (EV_A_ (W)w, ++periodiccnt);	1486	ev_start (EV_A_ (W)w, ++periodiccnt);
1348	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1487	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1349	periodics [periodiccnt - 1] = w;	1488	periodics [periodiccnt - 1] = w;
1350	upheap ((WT *)periodics, periodiccnt - 1);	1489	upheap ((WT *)periodics, periodiccnt - 1);
1351		1490
1352	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1491	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1353	}	1492	}
1354		1493
1355	void	1494	void
1356	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1495	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1357	{	1496	{
1358	ev_clear_pending (EV_A_ (W)w);	1497	ev_clear_pending (EV_A_ (W)w);
1359	if (!ev_is_active (w))	1498	if (expect_false (!ev_is_active (w)))
1360	return;	1499	return;
1361		1500
1362	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1501	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1363		1502
1364	if (((W)w)->active < periodiccnt--)	1503	if (expect_true (((W)w)->active < periodiccnt--))
1365	{	1504	{
1366	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1505	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1367	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1506	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1368	}	1507	}
1369		1508
1370	ev_stop (EV_A_ (W)w);	1509	ev_stop (EV_A_ (W)w);
1371	}	1510	}
1372		1511
1373	void	1512	void
1374	ev_periodic_again (EV_P_ struct ev_periodic *w)	1513	ev_periodic_again (EV_P_ struct ev_periodic *w)
1375	{	1514	{
		1515	/* TODO: use adjustheap and recalculation */
1376	ev_periodic_stop (EV_A_ w);	1516	ev_periodic_stop (EV_A_ w);
1377	ev_periodic_start (EV_A_ w);	1517	ev_periodic_start (EV_A_ w);
1378	}	1518	}
		1519	#endif
1379		1520
1380	void	1521	void
1381	ev_idle_start (EV_P_ struct ev_idle *w)	1522	ev_idle_start (EV_P_ struct ev_idle *w)
1382	{	1523	{
1383	if (ev_is_active (w))	1524	if (expect_false (ev_is_active (w)))
1384	return;	1525	return;
1385		1526
1386	ev_start (EV_A_ (W)w, ++idlecnt);	1527	ev_start (EV_A_ (W)w, ++idlecnt);
1387	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));	1528	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1388	idles [idlecnt - 1] = w;	1529	idles [idlecnt - 1] = w;
1389	}	1530	}
1390		1531
1391	void	1532	void
1392	ev_idle_stop (EV_P_ struct ev_idle *w)	1533	ev_idle_stop (EV_P_ struct ev_idle *w)
1393	{	1534	{
1394	ev_clear_pending (EV_A_ (W)w);	1535	ev_clear_pending (EV_A_ (W)w);
1395	if (ev_is_active (w))	1536	if (expect_false (!ev_is_active (w)))
1396	return;	1537	return;
1397		1538
1398	idles [((W)w)->active - 1] = idles [--idlecnt];	1539	idles [((W)w)->active - 1] = idles [--idlecnt];
1399	ev_stop (EV_A_ (W)w);	1540	ev_stop (EV_A_ (W)w);
1400	}	1541	}
1401		1542
1402	void	1543	void
1403	ev_prepare_start (EV_P_ struct ev_prepare *w)	1544	ev_prepare_start (EV_P_ struct ev_prepare *w)
1404	{	1545	{
1405	if (ev_is_active (w))	1546	if (expect_false (ev_is_active (w)))
1406	return;	1547	return;
1407		1548
1408	ev_start (EV_A_ (W)w, ++preparecnt);	1549	ev_start (EV_A_ (W)w, ++preparecnt);
1409	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));	1550	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1410	prepares [preparecnt - 1] = w;	1551	prepares [preparecnt - 1] = w;
1411	}	1552	}
1412		1553
1413	void	1554	void
1414	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1555	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1415	{	1556	{
1416	ev_clear_pending (EV_A_ (W)w);	1557	ev_clear_pending (EV_A_ (W)w);
1417	if (ev_is_active (w))	1558	if (expect_false (!ev_is_active (w)))
1418	return;	1559	return;
1419		1560
1420	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1561	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1421	ev_stop (EV_A_ (W)w);	1562	ev_stop (EV_A_ (W)w);
1422	}	1563	}
1423		1564
1424	void	1565	void
1425	ev_check_start (EV_P_ struct ev_check *w)	1566	ev_check_start (EV_P_ struct ev_check *w)
1426	{	1567	{
1427	if (ev_is_active (w))	1568	if (expect_false (ev_is_active (w)))
1428	return;	1569	return;
1429		1570
1430	ev_start (EV_A_ (W)w, ++checkcnt);	1571	ev_start (EV_A_ (W)w, ++checkcnt);
1431	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));	1572	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1432	checks [checkcnt - 1] = w;	1573	checks [checkcnt - 1] = w;
1433	}	1574	}
1434		1575
1435	void	1576	void
1436	ev_check_stop (EV_P_ struct ev_check *w)	1577	ev_check_stop (EV_P_ struct ev_check *w)
1437	{	1578	{
1438	ev_clear_pending (EV_A_ (W)w);	1579	ev_clear_pending (EV_A_ (W)w);
1439	if (ev_is_active (w))	1580	if (expect_false (!ev_is_active (w)))
1440	return;	1581	return;
1441		1582
1442	checks [((W)w)->active - 1] = checks [--checkcnt];	1583	checks [((W)w)->active - 1] = checks [--checkcnt];
1443	ev_stop (EV_A_ (W)w);	1584	ev_stop (EV_A_ (W)w);
1444	}	1585	}
…		…
1449		1590
1450	void	1591	void
1451	ev_signal_start (EV_P_ struct ev_signal *w)	1592	ev_signal_start (EV_P_ struct ev_signal *w)
1452	{	1593	{
1453	#if EV_MULTIPLICITY	1594	#if EV_MULTIPLICITY
1454	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1595	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1455	#endif	1596	#endif
1456	if (ev_is_active (w))	1597	if (expect_false (ev_is_active (w)))
1457	return;	1598	return;
1458		1599
1459	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1600	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1460		1601
1461	ev_start (EV_A_ (W)w, 1);	1602	ev_start (EV_A_ (W)w, 1);
1462	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1603	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1463	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1604	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1464		1605
1465	if (!((WL)w)->next)	1606	if (!((WL)w)->next)
1466	{	1607	{
1467	#if WIN32	1608	#if _WIN32
1468	signal (w->signum, sighandler);	1609	signal (w->signum, sighandler);
1469	#else	1610	#else
1470	struct sigaction sa;	1611	struct sigaction sa;
1471	sa.sa_handler = sighandler;	1612	sa.sa_handler = sighandler;
1472	sigfillset (&sa.sa_mask);	1613	sigfillset (&sa.sa_mask);
…		…
1478		1619
1479	void	1620	void
1480	ev_signal_stop (EV_P_ struct ev_signal *w)	1621	ev_signal_stop (EV_P_ struct ev_signal *w)
1481	{	1622	{
1482	ev_clear_pending (EV_A_ (W)w);	1623	ev_clear_pending (EV_A_ (W)w);
1483	if (!ev_is_active (w))	1624	if (expect_false (!ev_is_active (w)))
1484	return;	1625	return;
1485		1626
1486	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1627	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1487	ev_stop (EV_A_ (W)w);	1628	ev_stop (EV_A_ (W)w);
1488		1629
…		…
1492		1633
1493	void	1634	void
1494	ev_child_start (EV_P_ struct ev_child *w)	1635	ev_child_start (EV_P_ struct ev_child *w)
1495	{	1636	{
1496	#if EV_MULTIPLICITY	1637	#if EV_MULTIPLICITY
1497	assert (("child watchers are only supported in the default loop", loop == default_loop));	1638	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1498	#endif	1639	#endif
1499	if (ev_is_active (w))	1640	if (expect_false (ev_is_active (w)))
1500	return;	1641	return;
1501		1642
1502	ev_start (EV_A_ (W)w, 1);	1643	ev_start (EV_A_ (W)w, 1);
1503	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1644	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1504	}	1645	}
1505		1646
1506	void	1647	void
1507	ev_child_stop (EV_P_ struct ev_child *w)	1648	ev_child_stop (EV_P_ struct ev_child *w)
1508	{	1649	{
1509	ev_clear_pending (EV_A_ (W)w);	1650	ev_clear_pending (EV_A_ (W)w);
1510	if (ev_is_active (w))	1651	if (expect_false (!ev_is_active (w)))
1511	return;	1652	return;
1512		1653
1513	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1654	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1514	ev_stop (EV_A_ (W)w);	1655	ev_stop (EV_A_ (W)w);
1515	}	1656	}
…		…
1552	void	1693	void
1553	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1694	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1554	{	1695	{
1555	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));	1696	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1556		1697
1557	if (!once)	1698	if (expect_false (!once))
		1699	{
1558	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1700	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1559	else	1701	return;
1560	{	1702	}
		1703
1561	once->cb = cb;	1704	once->cb = cb;
1562	once->arg = arg;	1705	once->arg = arg;
1563		1706
1564	ev_watcher_init (&once->io, once_cb_io);	1707	ev_init (&once->io, once_cb_io);
1565	if (fd >= 0)	1708	if (fd >= 0)
1566	{	1709	{
1567	ev_io_set (&once->io, fd, events);	1710	ev_io_set (&once->io, fd, events);
1568	ev_io_start (EV_A_ &once->io);	1711	ev_io_start (EV_A_ &once->io);
1569	}	1712	}
1570		1713
1571	ev_watcher_init (&once->to, once_cb_to);	1714	ev_init (&once->to, once_cb_to);
1572	if (timeout >= 0.)	1715	if (timeout >= 0.)
1573	{	1716	{
1574	ev_timer_set (&once->to, timeout, 0.);	1717	ev_timer_set (&once->to, timeout, 0.);
1575	ev_timer_start (EV_A_ &once->to);	1718	ev_timer_start (EV_A_ &once->to);
1576	}
1577	}	1719	}
1578	}	1720	}
1579		1721
		1722	#ifdef __cplusplus
		1723	}
		1724	#endif
		1725

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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 1.129 by root, Fri Nov 23 05:00:44 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 1.129 by root, Fri Nov 23 05:00:44 2007 UTC