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

Comparing libev/ev.c (file contents):
Revision 1.69 by root, Tue Nov 6 00:10:04 2007 UTC vs.
Revision 1.114 by root, Mon Nov 12 20:03:39 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
32	# include "config.h"	37	# include "config.h"
33		38
34	# if HAVE_CLOCK_GETTIME	39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	44	# define EV_USE_REALTIME 1
		45	# endif
37	# endif	46	# endif
38		47
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
40	# define EV_USE_SELECT 1	49	# define EV_USE_SELECT 1
41	# endif	50	# endif
42		51
43	# if HAVE_POLL && HAVE_POLL_H	52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
44	# define EV_USE_POLL 1	53	# define EV_USE_POLL 1
45	# endif	54	# endif
46		55
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	56	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
48	# define EV_USE_EPOLL 1	57	# define EV_USE_EPOLL 1
49	# endif	58	# endif
50		59
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
52	# define EV_USE_KQUEUE 1	61	# define EV_USE_KQUEUE 1
53	# endif	62	# endif
54		63
55	#endif	64	#endif
56		65
57	#include <math.h>	66	#include <math.h>
58	#include <stdlib.h>	67	#include <stdlib.h>
59	#include <unistd.h>
60	#include <fcntl.h>	68	#include <fcntl.h>
61	#include <signal.h>
62	#include <stddef.h>	69	#include <stddef.h>
63		70
64	#include <stdio.h>	71	#include <stdio.h>
65		72
66	#include <assert.h>	73	#include <assert.h>
67	#include <errno.h>	74	#include <errno.h>
68	#include <sys/types.h>	75	#include <sys/types.h>
		76	#include <time.h>
		77
		78	#include <signal.h>
		79
69	#ifndef WIN32	80	#ifndef _WIN32
		81	# include <unistd.h>
		82	# include <sys/time.h>
70	# include <sys/wait.h>	83	# include <sys/wait.h>
		84	#else
		85	# define WIN32_LEAN_AND_MEAN
		86	# include <windows.h>
		87	# ifndef EV_SELECT_IS_WINSOCKET
		88	# define EV_SELECT_IS_WINSOCKET 1
71	#endif	89	# endif
72	#include <sys/time.h>	90	#endif
73	#include <time.h>
74		91
75	/**/	92	/**/
76		93
77	#ifndef EV_USE_MONOTONIC	94	#ifndef EV_USE_MONOTONIC
78	# define EV_USE_MONOTONIC 1	95	# define EV_USE_MONOTONIC 1
79	#endif	96	#endif
80		97
81	#ifndef EV_USE_SELECT	98	#ifndef EV_USE_SELECT
82	# define EV_USE_SELECT 1	99	# define EV_USE_SELECT 1
		100	# define EV_SELECT_USE_FD_SET 1
83	#endif	101	#endif
84		102
85	#ifndef EV_USE_POLL	103	#ifndef EV_USE_POLL
86	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	104	# ifdef _WIN32
		105	# define EV_USE_POLL 0
		106	# else
		107	# define EV_USE_POLL 1
		108	# endif
87	#endif	109	#endif
88		110
89	#ifndef EV_USE_EPOLL	111	#ifndef EV_USE_EPOLL
90	# define EV_USE_EPOLL 0	112	# define EV_USE_EPOLL 0
91	#endif	113	#endif
92		114
93	#ifndef EV_USE_KQUEUE	115	#ifndef EV_USE_KQUEUE
94	# define EV_USE_KQUEUE 0	116	# define EV_USE_KQUEUE 0
95	#endif	117	#endif
96		118
97	#ifndef EV_USE_WIN32
98	# ifdef WIN32
99	# define EV_USE_WIN32 1
100	# else
101	# define EV_USE_WIN32 0
102	# endif
103	#endif
104
105	#ifndef EV_USE_REALTIME	119	#ifndef EV_USE_REALTIME
106	# define EV_USE_REALTIME 1	120	# define EV_USE_REALTIME 1
107	#endif	121	#endif
108		122
109	/**/	123	/**/
		124
		125	/* darwin simply cannot be helped */
		126	#ifdef __APPLE__
		127	# undef EV_USE_POLL
		128	# undef EV_USE_KQUEUE
		129	#endif
110		130
111	#ifndef CLOCK_MONOTONIC	131	#ifndef CLOCK_MONOTONIC
112	# undef EV_USE_MONOTONIC	132	# undef EV_USE_MONOTONIC
113	# define EV_USE_MONOTONIC 0	133	# define EV_USE_MONOTONIC 0
114	#endif	134	#endif
115		135
116	#ifndef CLOCK_REALTIME	136	#ifndef CLOCK_REALTIME
117	# undef EV_USE_REALTIME	137	# undef EV_USE_REALTIME
118	# define EV_USE_REALTIME 0	138	# define EV_USE_REALTIME 0
		139	#endif
		140
		141	#if EV_SELECT_IS_WINSOCKET
		142	# include <winsock.h>
119	#endif	143	#endif
120		144
121	/**/	145	/**/
122		146
123	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	147	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
124	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	148	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
125	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	149	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
126	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	150	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
127		151
		152	#ifdef EV_H
		153	# include EV_H
		154	#else
128	#include "ev.h"	155	# include "ev.h"
		156	#endif
129		157
130	#if __GNUC__ >= 3	158	#if __GNUC__ >= 3
131	# define expect(expr,value) __builtin_expect ((expr),(value))	159	# define expect(expr,value) __builtin_expect ((expr),(value))
132	# define inline inline	160	# define inline inline
133	#else	161	#else
…		…
139	#define expect_true(expr) expect ((expr) != 0, 1)	167	#define expect_true(expr) expect ((expr) != 0, 1)
140		168
141	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	169	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	170	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
143		171
		172	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		173	#define EMPTY2(a,b) /* used to suppress some warnings */
		174
144	typedef struct ev_watcher *W;	175	typedef struct ev_watcher *W;
145	typedef struct ev_watcher_list *WL;	176	typedef struct ev_watcher_list *WL;
146	typedef struct ev_watcher_time *WT;	177	typedef struct ev_watcher_time *WT;
147		178
148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	179	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149		180
150	#if WIN32	181	#ifdef _WIN32
151	/* note: the comment below could not be substantiated, but what would I care */	182	# include "ev_win32.c"
152	/* MSDN says this is required to handle SIGFPE */
153	volatile double SIGFPE_REQ = 0.0f;
154	#endif	183	#endif
155		184
156	/*****************************************************************************/	185	/*****************************************************************************/
157		186
158	static void (*syserr_cb)(void);	187	static void (syserr_cb)(const char msg);
159		188
160	void ev_set_syserr_cb (void (*cb)(void))	189	void ev_set_syserr_cb (void (cb)(const char msg))
161	{	190	{
162	syserr_cb = cb;	191	syserr_cb = cb;
163	}	192	}
164		193
165	static void	194	static void
166	syserr (void)	195	syserr (const char *msg)
167	{	196	{
		197	if (!msg)
		198	msg = "(libev) system error";
		199
168	if (syserr_cb)	200	if (syserr_cb)
169	syserr_cb ();	201	syserr_cb (msg);
170	else	202	else
171	{	203	{
172	perror ("libev");	204	perror (msg);
173	abort ();	205	abort ();
174	}	206	}
175	}	207	}
176		208
177	static void (alloc)(void *ptr, long size);	209	static void (alloc)(void *ptr, long size);
…		…
203	typedef struct	235	typedef struct
204	{	236	{
205	WL head;	237	WL head;
206	unsigned char events;	238	unsigned char events;
207	unsigned char reify;	239	unsigned char reify;
		240	#if EV_SELECT_IS_WINSOCKET
		241	SOCKET handle;
		242	#endif
208	} ANFD;	243	} ANFD;
209		244
210	typedef struct	245	typedef struct
211	{	246	{
212	W w;	247	W w;
213	int events;	248	int events;
214	} ANPENDING;	249	} ANPENDING;
215		250
216	#if EV_MULTIPLICITY	251	#if EV_MULTIPLICITY
217		252
218	struct ev_loop	253	struct ev_loop
219	{	254	{
		255	ev_tstamp ev_rt_now;
		256	#define ev_rt_now ((loop)->ev_rt_now)
220	# define VAR(name,decl) decl;	257	#define VAR(name,decl) decl;
221	# include "ev_vars.h"	258	#include "ev_vars.h"
222	};
223	# undef VAR	259	#undef VAR
		260	};
224	# include "ev_wrap.h"	261	#include "ev_wrap.h"
		262
		263	struct ev_loop default_loop_struct;
		264	static struct ev_loop *default_loop;
225		265
226	#else	266	#else
227		267
		268	ev_tstamp ev_rt_now;
228	# define VAR(name,decl) static decl;	269	#define VAR(name,decl) static decl;
229	# include "ev_vars.h"	270	#include "ev_vars.h"
230	# undef VAR	271	#undef VAR
		272
		273	static int default_loop;
231		274
232	#endif	275	#endif
233		276
234	/*****************************************************************************/	277	/*****************************************************************************/
235		278
236	inline ev_tstamp	279	ev_tstamp
237	ev_time (void)	280	ev_time (void)
238	{	281	{
239	#if EV_USE_REALTIME	282	#if EV_USE_REALTIME
240	struct timespec ts;	283	struct timespec ts;
241	clock_gettime (CLOCK_REALTIME, &ts);	284	clock_gettime (CLOCK_REALTIME, &ts);
…		…
260	#endif	303	#endif
261		304
262	return ev_time ();	305	return ev_time ();
263	}	306	}
264		307
		308	#if EV_MULTIPLICITY
265	ev_tstamp	309	ev_tstamp
266	ev_now (EV_P)	310	ev_now (EV_P)
267	{	311	{
268	return rt_now;	312	return ev_rt_now;
269	}	313	}
		314	#endif
270		315
271	#define array_roundsize(base,n) ((n) \| 4 & ~3)	316	#define array_roundsize(type,n) (((n) \| 4) & ~3)
272		317
273	#define array_needsize(base,cur,cnt,init) \	318	#define array_needsize(type,base,cur,cnt,init) \
274	if (expect_false ((cnt) > cur)) \	319	if (expect_false ((cnt) > cur)) \
275	{ \	320	{ \
276	int newcnt = cur; \	321	int newcnt = cur; \
277	do \	322	do \
278	{ \	323	{ \
279	newcnt = array_roundsize (base, newcnt << 1); \	324	newcnt = array_roundsize (type, newcnt << 1); \
280	} \	325	} \
281	while ((cnt) > newcnt); \	326	while ((cnt) > newcnt); \
282	\	327	\
283	base = ev_realloc (base, sizeof (base) (newcnt)); \	328	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
284	init (base + cur, newcnt - cur); \	329	init (base + cur, newcnt - cur); \
285	cur = newcnt; \	330	cur = newcnt; \
286	}	331	}
287		332
288	#define array_slim(stem) \	333	#define array_slim(type,stem) \
289	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	334	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
290	{ \	335	{ \
291	stem ## max = array_roundsize (stem ## cnt >> 1); \	336	stem ## max = array_roundsize (stem ## cnt >> 1); \
292	base = ev_realloc (base, sizeof (base) (stem ## max)); \	337	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
293	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	338	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
294	}	339	}
295		340
296	#define array_free(stem, idx) \	341	#define array_free(stem, idx) \
297	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	342	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
…		…
309		354
310	++base;	355	++base;
311	}	356	}
312	}	357	}
313		358
314	static void	359	void
315	event (EV_P_ W w, int events)	360	ev_feed_event (EV_P_ void *w, int revents)
316	{	361	{
		362	W w_ = (W)w;
		363
317	if (w->pending)	364	if (w_->pending)
318	{	365	{
319	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	366	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
320	return;	367	return;
321	}	368	}
322		369
323	w->pending = ++pendingcnt [ABSPRI (w)];	370	w_->pending = ++pendingcnt [ABSPRI (w_)];
324	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	371	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
325	pendings [ABSPRI (w)][w->pending - 1].w = w;	372	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
326	pendings [ABSPRI (w)][w->pending - 1].events = events;	373	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
327	}	374	}
328		375
329	static void	376	static void
330	queue_events (EV_P_ W *events, int eventcnt, int type)	377	queue_events (EV_P_ W *events, int eventcnt, int type)
331	{	378	{
332	int i;	379	int i;
333		380
334	for (i = 0; i < eventcnt; ++i)	381	for (i = 0; i < eventcnt; ++i)
335	event (EV_A_ events [i], type);	382	ev_feed_event (EV_A_ events [i], type);
336	}	383	}
337		384
338	static void	385	inline void
339	fd_event (EV_P_ int fd, int events)	386	fd_event (EV_P_ int fd, int revents)
340	{	387	{
341	ANFD *anfd = anfds + fd;	388	ANFD *anfd = anfds + fd;
342	struct ev_io *w;	389	struct ev_io *w;
343		390
344	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	391	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
345	{	392	{
346	int ev = w->events & events;	393	int ev = w->events & revents;
347		394
348	if (ev)	395	if (ev)
349	event (EV_A_ (W)w, ev);	396	ev_feed_event (EV_A_ (W)w, ev);
350	}	397	}
		398	}
		399
		400	void
		401	ev_feed_fd_event (EV_P_ int fd, int revents)
		402	{
		403	fd_event (EV_A_ fd, revents);
351	}	404	}
352		405
353	/*****************************************************************************/	406	/*****************************************************************************/
354		407
355	static void	408	static void
…		…
366	int events = 0;	419	int events = 0;
367		420
368	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	421	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
369	events \|= w->events;	422	events \|= w->events;
370		423
		424	#if EV_SELECT_IS_WINSOCKET
		425	if (events)
		426	{
		427	unsigned long argp;
		428	anfd->handle = _get_osfhandle (fd);
		429	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		430	}
		431	#endif
		432
371	anfd->reify = 0;	433	anfd->reify = 0;
372		434
373	method_modify (EV_A_ fd, anfd->events, events);	435	method_modify (EV_A_ fd, anfd->events, events);
374	anfd->events = events;	436	anfd->events = events;
375	}	437	}
…		…
378	}	440	}
379		441
380	static void	442	static void
381	fd_change (EV_P_ int fd)	443	fd_change (EV_P_ int fd)
382	{	444	{
383	if (anfds [fd].reify \|\| fdchangecnt < 0)	445	if (anfds [fd].reify)
384	return;	446	return;
385		447
386	anfds [fd].reify = 1;	448	anfds [fd].reify = 1;
387		449
388	++fdchangecnt;	450	++fdchangecnt;
389	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	451	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
390	fdchanges [fdchangecnt - 1] = fd;	452	fdchanges [fdchangecnt - 1] = fd;
391	}	453	}
392		454
393	static void	455	static void
394	fd_kill (EV_P_ int fd)	456	fd_kill (EV_P_ int fd)
…		…
396	struct ev_io *w;	458	struct ev_io *w;
397		459
398	while ((w = (struct ev_io *)anfds [fd].head))	460	while ((w = (struct ev_io *)anfds [fd].head))
399	{	461	{
400	ev_io_stop (EV_A_ w);	462	ev_io_stop (EV_A_ w);
401	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	463	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
402	}	464	}
		465	}
		466
		467	static int
		468	fd_valid (int fd)
		469	{
		470	#ifdef _WIN32
		471	return _get_osfhandle (fd) != -1;
		472	#else
		473	return fcntl (fd, F_GETFD) != -1;
		474	#endif
403	}	475	}
404		476
405	/* called on EBADF to verify fds */	477	/* called on EBADF to verify fds */
406	static void	478	static void
407	fd_ebadf (EV_P)	479	fd_ebadf (EV_P)
408	{	480	{
409	int fd;	481	int fd;
410		482
411	for (fd = 0; fd < anfdmax; ++fd)	483	for (fd = 0; fd < anfdmax; ++fd)
412	if (anfds [fd].events)	484	if (anfds [fd].events)
413	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	485	if (!fd_valid (fd) == -1 && errno == EBADF)
414	fd_kill (EV_A_ fd);	486	fd_kill (EV_A_ fd);
415	}	487	}
416		488
417	/* called on ENOMEM in select/poll to kill some fds and retry */	489	/* called on ENOMEM in select/poll to kill some fds and retry */
418	static void	490	static void
…		…
426	fd_kill (EV_A_ fd);	498	fd_kill (EV_A_ fd);
427	return;	499	return;
428	}	500	}
429	}	501	}
430		502
431	/* susually called after fork if method needs to re-arm all fds from scratch */	503	/* usually called after fork if method needs to re-arm all fds from scratch */
432	static void	504	static void
433	fd_rearm_all (EV_P)	505	fd_rearm_all (EV_P)
434	{	506	{
435	int fd;	507	int fd;
436		508
…		…
484		556
485	heap [k] = w;	557	heap [k] = w;
486	((W)heap [k])->active = k + 1;	558	((W)heap [k])->active = k + 1;
487	}	559	}
488		560
		561	inline void
		562	adjustheap (WT *heap, int N, int k)
		563	{
		564	upheap (heap, k);
		565	downheap (heap, N, k);
		566	}
		567
489	/*****************************************************************************/	568	/*****************************************************************************/
490		569
491	typedef struct	570	typedef struct
492	{	571	{
493	WL head;	572	WL head;
…		…
514	}	593	}
515		594
516	static void	595	static void
517	sighandler (int signum)	596	sighandler (int signum)
518	{	597	{
519	#if WIN32	598	#if _WIN32
520	signal (signum, sighandler);	599	signal (signum, sighandler);
521	#endif	600	#endif
522		601
523	signals [signum - 1].gotsig = 1;	602	signals [signum - 1].gotsig = 1;
524		603
…		…
529	write (sigpipe [1], &signum, 1);	608	write (sigpipe [1], &signum, 1);
530	errno = old_errno;	609	errno = old_errno;
531	}	610	}
532	}	611	}
533		612
		613	void
		614	ev_feed_signal_event (EV_P_ int signum)
		615	{
		616	WL w;
		617
		618	#if EV_MULTIPLICITY
		619	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		620	#endif
		621
		622	--signum;
		623
		624	if (signum < 0 \|\| signum >= signalmax)
		625	return;
		626
		627	signals [signum].gotsig = 0;
		628
		629	for (w = signals [signum].head; w; w = w->next)
		630	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		631	}
		632
534	static void	633	static void
535	sigcb (EV_P_ struct ev_io *iow, int revents)	634	sigcb (EV_P_ struct ev_io *iow, int revents)
536	{	635	{
537	WL w;
538	int signum;	636	int signum;
539		637
540	read (sigpipe [0], &revents, 1);	638	read (sigpipe [0], &revents, 1);
541	gotsig = 0;	639	gotsig = 0;
542		640
543	for (signum = signalmax; signum--; )	641	for (signum = signalmax; signum--; )
544	if (signals [signum].gotsig)	642	if (signals [signum].gotsig)
545	{	643	ev_feed_signal_event (EV_A_ signum + 1);
546	signals [signum].gotsig = 0;	644	}
547		645
548	for (w = signals [signum].head; w; w = w->next)	646	inline void
549	event (EV_A_ (W)w, EV_SIGNAL);	647	fd_intern (int fd)
550	}	648	{
		649	#ifdef _WIN32
		650	int arg = 1;
		651	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		652	#else
		653	fcntl (fd, F_SETFD, FD_CLOEXEC);
		654	fcntl (fd, F_SETFL, O_NONBLOCK);
		655	#endif
551	}	656	}
552		657
553	static void	658	static void
554	siginit (EV_P)	659	siginit (EV_P)
555	{	660	{
556	#ifndef WIN32	661	fd_intern (sigpipe [0]);
557	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	662	fd_intern (sigpipe [1]);
558	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
559
560	/* rather than sort out wether we really need nb, set it */
561	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
562	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
563	#endif
564		663
565	ev_io_set (&sigev, sigpipe [0], EV_READ);	664	ev_io_set (&sigev, sigpipe [0], EV_READ);
566	ev_io_start (EV_A_ &sigev);	665	ev_io_start (EV_A_ &sigev);
567	ev_unref (EV_A); /* child watcher should not keep loop alive */	666	ev_unref (EV_A); /* child watcher should not keep loop alive */
568	}	667	}
569		668
570	/*****************************************************************************/	669	/*****************************************************************************/
571		670
572	#ifndef WIN32
573
574	static struct ev_child *childs [PID_HASHSIZE];	671	static struct ev_child *childs [PID_HASHSIZE];
		672
		673	#ifndef _WIN32
		674
575	static struct ev_signal childev;	675	static struct ev_signal childev;
576		676
577	#ifndef WCONTINUED	677	#ifndef WCONTINUED
578	# define WCONTINUED 0	678	# define WCONTINUED 0
579	#endif	679	#endif
…		…
587	if (w->pid == pid \|\| !w->pid)	687	if (w->pid == pid \|\| !w->pid)
588	{	688	{
589	ev_priority (w) = ev_priority (sw); /* need to do it now */	689	ev_priority (w) = ev_priority (sw); /* need to do it now */
590	w->rpid = pid;	690	w->rpid = pid;
591	w->rstatus = status;	691	w->rstatus = status;
592	event (EV_A_ (W)w, EV_CHILD);	692	ev_feed_event (EV_A_ (W)w, EV_CHILD);
593	}	693	}
594	}	694	}
595		695
596	static void	696	static void
597	childcb (EV_P_ struct ev_signal *sw, int revents)	697	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
599	int pid, status;	699	int pid, status;
600		700
601	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	701	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
602	{	702	{
603	/* make sure we are called again until all childs have been reaped */	703	/* make sure we are called again until all childs have been reaped */
604	event (EV_A_ (W)sw, EV_SIGNAL);	704	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
605		705
606	child_reap (EV_A_ sw, pid, pid, status);	706	child_reap (EV_A_ sw, pid, pid, status);
607	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	707	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
608	}	708	}
609	}	709	}
…		…
639		739
640	/* return true if we are running with elevated privileges and should ignore env variables */	740	/* return true if we are running with elevated privileges and should ignore env variables */
641	static int	741	static int
642	enable_secure (void)	742	enable_secure (void)
643	{	743	{
644	#ifdef WIN32	744	#ifdef _WIN32
645	return 0;	745	return 0;
646	#else	746	#else
647	return getuid () != geteuid ()	747	return getuid () != geteuid ()
648	\|\| getgid () != getegid ();	748	\|\| getgid () != getegid ();
649	#endif	749	#endif
650	}	750	}
651		751
652	int	752	unsigned int
653	ev_method (EV_P)	753	ev_method (EV_P)
654	{	754	{
655	return method;	755	return method;
656	}	756	}
657		757
658	static void	758	static void
659	loop_init (EV_P_ int methods)	759	loop_init (EV_P_ unsigned int flags)
660	{	760	{
661	if (!method)	761	if (!method)
662	{	762	{
663	#if EV_USE_MONOTONIC	763	#if EV_USE_MONOTONIC
664	{	764	{
…		…
666	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	766	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
667	have_monotonic = 1;	767	have_monotonic = 1;
668	}	768	}
669	#endif	769	#endif
670		770
671	rt_now = ev_time ();	771	ev_rt_now = ev_time ();
672	mn_now = get_clock ();	772	mn_now = get_clock ();
673	now_floor = mn_now;	773	now_floor = mn_now;
674	rtmn_diff = rt_now - mn_now;	774	rtmn_diff = ev_rt_now - mn_now;
675		775
676	if (methods == EVMETHOD_AUTO)	776	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
677	if (!enable_secure () && getenv ("LIBEV_METHODS"))
678	methods = atoi (getenv ("LIBEV_METHODS"));	777	flags = atoi (getenv ("LIBEV_FLAGS"));
679	else	778
680	methods = EVMETHOD_ANY;	779	if (!(flags & 0x0000ffff))
		780	flags \|= 0x0000ffff;
681		781
682	method = 0;	782	method = 0;
683	#if EV_USE_WIN32
684	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
685	#endif
686	#if EV_USE_KQUEUE	783	#if EV_USE_KQUEUE
687	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	784	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
688	#endif	785	#endif
689	#if EV_USE_EPOLL	786	#if EV_USE_EPOLL
690	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	787	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
691	#endif	788	#endif
692	#if EV_USE_POLL	789	#if EV_USE_POLL
693	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	790	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
694	#endif	791	#endif
695	#if EV_USE_SELECT	792	#if EV_USE_SELECT
696	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	793	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
697	#endif	794	#endif
		795
		796	ev_init (&sigev, sigcb);
		797	ev_set_priority (&sigev, EV_MAXPRI);
698	}	798	}
699	}	799	}
700		800
701	void	801	void
702	loop_destroy (EV_P)	802	loop_destroy (EV_P)
703	{	803	{
704	int i;	804	int i;
705		805
706	#if EV_USE_WIN32
707	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
708	#endif
709	#if EV_USE_KQUEUE	806	#if EV_USE_KQUEUE
710	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	807	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
711	#endif	808	#endif
712	#if EV_USE_EPOLL	809	#if EV_USE_EPOLL
713	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	810	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
…		…
720	#endif	817	#endif
721		818
722	for (i = NUMPRI; i--; )	819	for (i = NUMPRI; i--; )
723	array_free (pending, [i]);	820	array_free (pending, [i]);
724		821
		822	/* have to use the microsoft-never-gets-it-right macro */
725	array_free (fdchange, );	823	array_free (fdchange, EMPTY0);
726	array_free (timer, );	824	array_free (timer, EMPTY0);
		825	#if EV_PERIODICS
727	array_free (periodic, );	826	array_free (periodic, EMPTY0);
		827	#endif
728	array_free (idle, );	828	array_free (idle, EMPTY0);
729	array_free (prepare, );	829	array_free (prepare, EMPTY0);
730	array_free (check, );	830	array_free (check, EMPTY0);
731		831
732	method = 0;	832	method = 0;
733	/TODO/
734	}	833	}
735		834
736	void	835	static void
737	loop_fork (EV_P)	836	loop_fork (EV_P)
738	{	837	{
739	/TODO/
740	#if EV_USE_EPOLL	838	#if EV_USE_EPOLL
741	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	839	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
742	#endif	840	#endif
743	#if EV_USE_KQUEUE	841	#if EV_USE_KQUEUE
744	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	842	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
745	#endif	843	#endif
		844
		845	if (ev_is_active (&sigev))
		846	{
		847	/* default loop */
		848
		849	ev_ref (EV_A);
		850	ev_io_stop (EV_A_ &sigev);
		851	close (sigpipe [0]);
		852	close (sigpipe [1]);
		853
		854	while (pipe (sigpipe))
		855	syserr ("(libev) error creating pipe");
		856
		857	siginit (EV_A);
		858	}
		859
		860	postfork = 0;
746	}	861	}
747		862
748	#if EV_MULTIPLICITY	863	#if EV_MULTIPLICITY
749	struct ev_loop *	864	struct ev_loop *
750	ev_loop_new (int methods)	865	ev_loop_new (unsigned int flags)
751	{	866	{
752	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	867	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
753		868
754	memset (loop, 0, sizeof (struct ev_loop));	869	memset (loop, 0, sizeof (struct ev_loop));
755		870
756	loop_init (EV_A_ methods);	871	loop_init (EV_A_ flags);
757		872
758	if (ev_method (EV_A))	873	if (ev_method (EV_A))
759	return loop;	874	return loop;
760		875
761	return 0;	876	return 0;
…		…
769	}	884	}
770		885
771	void	886	void
772	ev_loop_fork (EV_P)	887	ev_loop_fork (EV_P)
773	{	888	{
774	loop_fork (EV_A);	889	postfork = 1;
775	}	890	}
776		891
777	#endif	892	#endif
778		893
779	#if EV_MULTIPLICITY	894	#if EV_MULTIPLICITY
780	struct ev_loop default_loop_struct;
781	static struct ev_loop *default_loop;
782
783	struct ev_loop *	895	struct ev_loop *
784	#else	896	#else
785	static int default_loop;
786
787	int	897	int
788	#endif	898	#endif
789	ev_default_loop (int methods)	899	ev_default_loop (unsigned int flags)
790	{	900	{
791	if (sigpipe [0] == sigpipe [1])	901	if (sigpipe [0] == sigpipe [1])
792	if (pipe (sigpipe))	902	if (pipe (sigpipe))
793	return 0;	903	return 0;
794		904
…		…
798	struct ev_loop *loop = default_loop = &default_loop_struct;	908	struct ev_loop *loop = default_loop = &default_loop_struct;
799	#else	909	#else
800	default_loop = 1;	910	default_loop = 1;
801	#endif	911	#endif
802		912
803	loop_init (EV_A_ methods);	913	loop_init (EV_A_ flags);
804		914
805	if (ev_method (EV_A))	915	if (ev_method (EV_A))
806	{	916	{
807	ev_watcher_init (&sigev, sigcb);
808	ev_set_priority (&sigev, EV_MAXPRI);
809	siginit (EV_A);	917	siginit (EV_A);
810		918
811	#ifndef WIN32	919	#ifndef _WIN32
812	ev_signal_init (&childev, childcb, SIGCHLD);	920	ev_signal_init (&childev, childcb, SIGCHLD);
813	ev_set_priority (&childev, EV_MAXPRI);	921	ev_set_priority (&childev, EV_MAXPRI);
814	ev_signal_start (EV_A_ &childev);	922	ev_signal_start (EV_A_ &childev);
815	ev_unref (EV_A); /* child watcher should not keep loop alive */	923	ev_unref (EV_A); /* child watcher should not keep loop alive */
816	#endif	924	#endif
…		…
827	{	935	{
828	#if EV_MULTIPLICITY	936	#if EV_MULTIPLICITY
829	struct ev_loop *loop = default_loop;	937	struct ev_loop *loop = default_loop;
830	#endif	938	#endif
831		939
		940	#ifndef _WIN32
832	ev_ref (EV_A); /* child watcher */	941	ev_ref (EV_A); /* child watcher */
833	ev_signal_stop (EV_A_ &childev);	942	ev_signal_stop (EV_A_ &childev);
		943	#endif
834		944
835	ev_ref (EV_A); /* signal watcher */	945	ev_ref (EV_A); /* signal watcher */
836	ev_io_stop (EV_A_ &sigev);	946	ev_io_stop (EV_A_ &sigev);
837		947
838	close (sigpipe [0]); sigpipe [0] = 0;	948	close (sigpipe [0]); sigpipe [0] = 0;
…		…
846	{	956	{
847	#if EV_MULTIPLICITY	957	#if EV_MULTIPLICITY
848	struct ev_loop *loop = default_loop;	958	struct ev_loop *loop = default_loop;
849	#endif	959	#endif
850		960
851	loop_fork (EV_A);	961	if (method)
852		962	postfork = 1;
853	ev_io_stop (EV_A_ &sigev);
854	close (sigpipe [0]);
855	close (sigpipe [1]);
856	pipe (sigpipe);
857
858	ev_ref (EV_A); /* signal watcher */
859	siginit (EV_A);
860	}	963	}
861		964
862	/*****************************************************************************/	965	/*****************************************************************************/
		966
		967	static int
		968	any_pending (EV_P)
		969	{
		970	int pri;
		971
		972	for (pri = NUMPRI; pri--; )
		973	if (pendingcnt [pri])
		974	return 1;
		975
		976	return 0;
		977	}
863		978
864	static void	979	static void
865	call_pending (EV_P)	980	call_pending (EV_P)
866	{	981	{
867	int pri;	982	int pri;
…		…
872	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	987	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
873		988
874	if (p->w)	989	if (p->w)
875	{	990	{
876	p->w->pending = 0;	991	p->w->pending = 0;
877	p->w->cb (EV_A_ p->w, p->events);	992	EV_CB_INVOKE (p->w, p->events);
878	}	993	}
879	}	994	}
880	}	995	}
881		996
882	static void	997	static void
…		…
890		1005
891	/* first reschedule or stop timer */	1006	/* first reschedule or stop timer */
892	if (w->repeat)	1007	if (w->repeat)
893	{	1008	{
894	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1009	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1010
895	((WT)w)->at = mn_now + w->repeat;	1011	((WT)w)->at += w->repeat;
		1012	if (((WT)w)->at < mn_now)
		1013	((WT)w)->at = mn_now;
		1014
896	downheap ((WT *)timers, timercnt, 0);	1015	downheap ((WT *)timers, timercnt, 0);
897	}	1016	}
898	else	1017	else
899	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1018	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
900		1019
901	event (EV_A_ (W)w, EV_TIMEOUT);	1020	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
902	}	1021	}
903	}	1022	}
904		1023
		1024	#if EV_PERIODICS
905	static void	1025	static void
906	periodics_reify (EV_P)	1026	periodics_reify (EV_P)
907	{	1027	{
908	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1028	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
909	{	1029	{
910	struct ev_periodic *w = periodics [0];	1030	struct ev_periodic *w = periodics [0];
911		1031
912	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1032	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
913		1033
914	/* first reschedule or stop timer */	1034	/* first reschedule or stop timer */
915	if (w->interval)	1035	if (w->reschedule_cb)
916	{	1036	{
		1037	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1038	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1039	downheap ((WT *)periodics, periodiccnt, 0);
		1040	}
		1041	else if (w->interval)
		1042	{
917	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1043	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
918	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1044	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
919	downheap ((WT *)periodics, periodiccnt, 0);	1045	downheap ((WT *)periodics, periodiccnt, 0);
920	}	1046	}
921	else	1047	else
922	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1048	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
923		1049
924	event (EV_A_ (W)w, EV_PERIODIC);	1050	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
925	}	1051	}
926	}	1052	}
927		1053
928	static void	1054	static void
929	periodics_reschedule (EV_P)	1055	periodics_reschedule (EV_P)
…		…
933	/* adjust periodics after time jump */	1059	/* adjust periodics after time jump */
934	for (i = 0; i < periodiccnt; ++i)	1060	for (i = 0; i < periodiccnt; ++i)
935	{	1061	{
936	struct ev_periodic *w = periodics [i];	1062	struct ev_periodic *w = periodics [i];
937		1063
		1064	if (w->reschedule_cb)
		1065	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
938	if (w->interval)	1066	else if (w->interval)
939	{
940	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1067	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
941
942	if (fabs (diff) >= 1e-4)
943	{
944	ev_periodic_stop (EV_A_ w);
945	ev_periodic_start (EV_A_ w);
946
947	i = 0; /* restart loop, inefficient, but time jumps should be rare */
948	}
949	}
950	}	1068	}
		1069
		1070	/* now rebuild the heap */
		1071	for (i = periodiccnt >> 1; i--; )
		1072	downheap ((WT *)periodics, periodiccnt, i);
951	}	1073	}
		1074	#endif
952		1075
953	inline int	1076	inline int
954	time_update_monotonic (EV_P)	1077	time_update_monotonic (EV_P)
955	{	1078	{
956	mn_now = get_clock ();	1079	mn_now = get_clock ();
957		1080
958	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1081	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
959	{	1082	{
960	rt_now = rtmn_diff + mn_now;	1083	ev_rt_now = rtmn_diff + mn_now;
961	return 0;	1084	return 0;
962	}	1085	}
963	else	1086	else
964	{	1087	{
965	now_floor = mn_now;	1088	now_floor = mn_now;
966	rt_now = ev_time ();	1089	ev_rt_now = ev_time ();
967	return 1;	1090	return 1;
968	}	1091	}
969	}	1092	}
970		1093
971	static void	1094	static void
…		…
980	{	1103	{
981	ev_tstamp odiff = rtmn_diff;	1104	ev_tstamp odiff = rtmn_diff;
982		1105
983	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1106	for (i = 4; --i; ) /* loop a few times, before making important decisions */
984	{	1107	{
985	rtmn_diff = rt_now - mn_now;	1108	rtmn_diff = ev_rt_now - mn_now;
986		1109
987	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1110	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
988	return; /* all is well */	1111	return; /* all is well */
989		1112
990	rt_now = ev_time ();	1113	ev_rt_now = ev_time ();
991	mn_now = get_clock ();	1114	mn_now = get_clock ();
992	now_floor = mn_now;	1115	now_floor = mn_now;
993	}	1116	}
994		1117
		1118	# if EV_PERIODICS
995	periodics_reschedule (EV_A);	1119	periodics_reschedule (EV_A);
		1120	# endif
996	/* no timer adjustment, as the monotonic clock doesn't jump */	1121	/* no timer adjustment, as the monotonic clock doesn't jump */
997	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1122	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
998	}	1123	}
999	}	1124	}
1000	else	1125	else
1001	#endif	1126	#endif
1002	{	1127	{
1003	rt_now = ev_time ();	1128	ev_rt_now = ev_time ();
1004		1129
1005	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1130	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1006	{	1131	{
		1132	#if EV_PERIODICS
1007	periodics_reschedule (EV_A);	1133	periodics_reschedule (EV_A);
		1134	#endif
1008		1135
1009	/* adjust timers. this is easy, as the offset is the same for all */	1136	/* adjust timers. this is easy, as the offset is the same for all */
1010	for (i = 0; i < timercnt; ++i)	1137	for (i = 0; i < timercnt; ++i)
1011	((WT)timers [i])->at += rt_now - mn_now;	1138	((WT)timers [i])->at += ev_rt_now - mn_now;
1012	}	1139	}
1013		1140
1014	mn_now = rt_now;	1141	mn_now = ev_rt_now;
1015	}	1142	}
1016	}	1143	}
1017		1144
1018	void	1145	void
1019	ev_ref (EV_P)	1146	ev_ref (EV_P)
…		…
1042	{	1169	{
1043	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1170	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1044	call_pending (EV_A);	1171	call_pending (EV_A);
1045	}	1172	}
1046		1173
		1174	/* we might have forked, so reify kernel state if necessary */
		1175	if (expect_false (postfork))
		1176	loop_fork (EV_A);
		1177
1047	/* update fd-related kernel structures */	1178	/* update fd-related kernel structures */
1048	fd_reify (EV_A);	1179	fd_reify (EV_A);
1049		1180
1050	/* calculate blocking time */	1181	/* calculate blocking time */
1051		1182
1052	/* we only need this for !monotonic clockor timers, but as we basically	1183	/* we only need this for !monotonic clock or timers, but as we basically
1053	always have timers, we just calculate it always */	1184	always have timers, we just calculate it always */
1054	#if EV_USE_MONOTONIC	1185	#if EV_USE_MONOTONIC
1055	if (expect_true (have_monotonic))	1186	if (expect_true (have_monotonic))
1056	time_update_monotonic (EV_A);	1187	time_update_monotonic (EV_A);
1057	else	1188	else
1058	#endif	1189	#endif
1059	{	1190	{
1060	rt_now = ev_time ();	1191	ev_rt_now = ev_time ();
1061	mn_now = rt_now;	1192	mn_now = ev_rt_now;
1062	}	1193	}
1063		1194
1064	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1195	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1065	block = 0.;	1196	block = 0.;
1066	else	1197	else
…		…
1071	{	1202	{
1072	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1203	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
1073	if (block > to) block = to;	1204	if (block > to) block = to;
1074	}	1205	}
1075		1206
		1207	#if EV_PERIODICS
1076	if (periodiccnt)	1208	if (periodiccnt)
1077	{	1209	{
1078	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1210	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
1079	if (block > to) block = to;	1211	if (block > to) block = to;
1080	}	1212	}
		1213	#endif
1081		1214
1082	if (block < 0.) block = 0.;	1215	if (block < 0.) block = 0.;
1083	}	1216	}
1084		1217
1085	method_poll (EV_A_ block);	1218	method_poll (EV_A_ block);
1086		1219
1087	/* update rt_now, do magic */	1220	/* update ev_rt_now, do magic */
1088	time_update (EV_A);	1221	time_update (EV_A);
1089		1222
1090	/* queue pending timers and reschedule them */	1223	/* queue pending timers and reschedule them */
1091	timers_reify (EV_A); /* relative timers called last */	1224	timers_reify (EV_A); /* relative timers called last */
		1225	#if EV_PERIODICS
1092	periodics_reify (EV_A); /* absolute timers called first */	1226	periodics_reify (EV_A); /* absolute timers called first */
		1227	#endif
1093		1228
1094	/* queue idle watchers unless io or timers are pending */	1229	/* queue idle watchers unless io or timers are pending */
1095	if (!pendingcnt)	1230	if (idlecnt && !any_pending (EV_A))
1096	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1231	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1097		1232
1098	/* queue check watchers, to be executed first */	1233	/* queue check watchers, to be executed first */
1099	if (checkcnt)	1234	if (checkcnt)
1100	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1235	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
…		…
1175	return;	1310	return;
1176		1311
1177	assert (("ev_io_start called with negative fd", fd >= 0));	1312	assert (("ev_io_start called with negative fd", fd >= 0));
1178		1313
1179	ev_start (EV_A_ (W)w, 1);	1314	ev_start (EV_A_ (W)w, 1);
1180	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1315	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1181	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1316	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1182		1317
1183	fd_change (EV_A_ fd);	1318	fd_change (EV_A_ fd);
1184	}	1319	}
1185		1320
…		…
1188	{	1323	{
1189	ev_clear_pending (EV_A_ (W)w);	1324	ev_clear_pending (EV_A_ (W)w);
1190	if (!ev_is_active (w))	1325	if (!ev_is_active (w))
1191	return;	1326	return;
1192		1327
		1328	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1329
1193	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1330	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1194	ev_stop (EV_A_ (W)w);	1331	ev_stop (EV_A_ (W)w);
1195		1332
1196	fd_change (EV_A_ w->fd);	1333	fd_change (EV_A_ w->fd);
1197	}	1334	}
…		…
1205	((WT)w)->at += mn_now;	1342	((WT)w)->at += mn_now;
1206		1343
1207	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1344	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1208		1345
1209	ev_start (EV_A_ (W)w, ++timercnt);	1346	ev_start (EV_A_ (W)w, ++timercnt);
1210	array_needsize (timers, timermax, timercnt, );	1347	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1211	timers [timercnt - 1] = w;	1348	timers [timercnt - 1] = w;
1212	upheap ((WT *)timers, timercnt - 1);	1349	upheap ((WT *)timers, timercnt - 1);
1213		1350
1214	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1351	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1215	}	1352	}
…		…
1224	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1361	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1225		1362
1226	if (((W)w)->active < timercnt--)	1363	if (((W)w)->active < timercnt--)
1227	{	1364	{
1228	timers [((W)w)->active - 1] = timers [timercnt];	1365	timers [((W)w)->active - 1] = timers [timercnt];
1229	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1366	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1230	}	1367	}
1231		1368
1232	((WT)w)->at = w->repeat;	1369	((WT)w)->at -= mn_now;
1233		1370
1234	ev_stop (EV_A_ (W)w);	1371	ev_stop (EV_A_ (W)w);
1235	}	1372	}
1236		1373
1237	void	1374	void
…		…
1240	if (ev_is_active (w))	1377	if (ev_is_active (w))
1241	{	1378	{
1242	if (w->repeat)	1379	if (w->repeat)
1243	{	1380	{
1244	((WT)w)->at = mn_now + w->repeat;	1381	((WT)w)->at = mn_now + w->repeat;
1245	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1382	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1246	}	1383	}
1247	else	1384	else
1248	ev_timer_stop (EV_A_ w);	1385	ev_timer_stop (EV_A_ w);
1249	}	1386	}
1250	else if (w->repeat)	1387	else if (w->repeat)
		1388	{
		1389	w->at = w->repeat;
1251	ev_timer_start (EV_A_ w);	1390	ev_timer_start (EV_A_ w);
		1391	}
1252	}	1392	}
1253		1393
		1394	#if EV_PERIODICS
1254	void	1395	void
1255	ev_periodic_start (EV_P_ struct ev_periodic *w)	1396	ev_periodic_start (EV_P_ struct ev_periodic *w)
1256	{	1397	{
1257	if (ev_is_active (w))	1398	if (ev_is_active (w))
1258	return;	1399	return;
1259		1400
		1401	if (w->reschedule_cb)
		1402	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1403	else if (w->interval)
		1404	{
1260	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1405	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1261
1262	/* this formula differs from the one in periodic_reify because we do not always round up */	1406	/* this formula differs from the one in periodic_reify because we do not always round up */
1263	if (w->interval)
1264	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1407	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1408	}
1265		1409
1266	ev_start (EV_A_ (W)w, ++periodiccnt);	1410	ev_start (EV_A_ (W)w, ++periodiccnt);
1267	array_needsize (periodics, periodicmax, periodiccnt, );	1411	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1268	periodics [periodiccnt - 1] = w;	1412	periodics [periodiccnt - 1] = w;
1269	upheap ((WT *)periodics, periodiccnt - 1);	1413	upheap ((WT *)periodics, periodiccnt - 1);
1270		1414
1271	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1415	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1272	}	1416	}
…		…
1281	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1425	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1282		1426
1283	if (((W)w)->active < periodiccnt--)	1427	if (((W)w)->active < periodiccnt--)
1284	{	1428	{
1285	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1429	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1286	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1430	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1287	}	1431	}
1288		1432
1289	ev_stop (EV_A_ (W)w);	1433	ev_stop (EV_A_ (W)w);
1290	}	1434	}
1291		1435
1292	void	1436	void
		1437	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1438	{
		1439	/* TODO: use adjustheap and recalculation */
		1440	ev_periodic_stop (EV_A_ w);
		1441	ev_periodic_start (EV_A_ w);
		1442	}
		1443	#endif
		1444
		1445	void
1293	ev_idle_start (EV_P_ struct ev_idle *w)	1446	ev_idle_start (EV_P_ struct ev_idle *w)
1294	{	1447	{
1295	if (ev_is_active (w))	1448	if (ev_is_active (w))
1296	return;	1449	return;
1297		1450
1298	ev_start (EV_A_ (W)w, ++idlecnt);	1451	ev_start (EV_A_ (W)w, ++idlecnt);
1299	array_needsize (idles, idlemax, idlecnt, );	1452	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1300	idles [idlecnt - 1] = w;	1453	idles [idlecnt - 1] = w;
1301	}	1454	}
1302		1455
1303	void	1456	void
1304	ev_idle_stop (EV_P_ struct ev_idle *w)	1457	ev_idle_stop (EV_P_ struct ev_idle *w)
1305	{	1458	{
1306	ev_clear_pending (EV_A_ (W)w);	1459	ev_clear_pending (EV_A_ (W)w);
1307	if (ev_is_active (w))	1460	if (!ev_is_active (w))
1308	return;	1461	return;
1309		1462
1310	idles [((W)w)->active - 1] = idles [--idlecnt];	1463	idles [((W)w)->active - 1] = idles [--idlecnt];
1311	ev_stop (EV_A_ (W)w);	1464	ev_stop (EV_A_ (W)w);
1312	}	1465	}
…		…
1316	{	1469	{
1317	if (ev_is_active (w))	1470	if (ev_is_active (w))
1318	return;	1471	return;
1319		1472
1320	ev_start (EV_A_ (W)w, ++preparecnt);	1473	ev_start (EV_A_ (W)w, ++preparecnt);
1321	array_needsize (prepares, preparemax, preparecnt, );	1474	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1322	prepares [preparecnt - 1] = w;	1475	prepares [preparecnt - 1] = w;
1323	}	1476	}
1324		1477
1325	void	1478	void
1326	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1479	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1327	{	1480	{
1328	ev_clear_pending (EV_A_ (W)w);	1481	ev_clear_pending (EV_A_ (W)w);
1329	if (ev_is_active (w))	1482	if (!ev_is_active (w))
1330	return;	1483	return;
1331		1484
1332	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1485	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1333	ev_stop (EV_A_ (W)w);	1486	ev_stop (EV_A_ (W)w);
1334	}	1487	}
…		…
1338	{	1491	{
1339	if (ev_is_active (w))	1492	if (ev_is_active (w))
1340	return;	1493	return;
1341		1494
1342	ev_start (EV_A_ (W)w, ++checkcnt);	1495	ev_start (EV_A_ (W)w, ++checkcnt);
1343	array_needsize (checks, checkmax, checkcnt, );	1496	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1344	checks [checkcnt - 1] = w;	1497	checks [checkcnt - 1] = w;
1345	}	1498	}
1346		1499
1347	void	1500	void
1348	ev_check_stop (EV_P_ struct ev_check *w)	1501	ev_check_stop (EV_P_ struct ev_check *w)
1349	{	1502	{
1350	ev_clear_pending (EV_A_ (W)w);	1503	ev_clear_pending (EV_A_ (W)w);
1351	if (ev_is_active (w))	1504	if (!ev_is_active (w))
1352	return;	1505	return;
1353		1506
1354	checks [((W)w)->active - 1] = checks [--checkcnt];	1507	checks [((W)w)->active - 1] = checks [--checkcnt];
1355	ev_stop (EV_A_ (W)w);	1508	ev_stop (EV_A_ (W)w);
1356	}	1509	}
…		…
1369	return;	1522	return;
1370		1523
1371	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1524	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1372		1525
1373	ev_start (EV_A_ (W)w, 1);	1526	ev_start (EV_A_ (W)w, 1);
1374	array_needsize (signals, signalmax, w->signum, signals_init);	1527	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1375	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1528	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1376		1529
1377	if (!((WL)w)->next)	1530	if (!((WL)w)->next)
1378	{	1531	{
1379	#if WIN32	1532	#if _WIN32
1380	signal (w->signum, sighandler);	1533	signal (w->signum, sighandler);
1381	#else	1534	#else
1382	struct sigaction sa;	1535	struct sigaction sa;
1383	sa.sa_handler = sighandler;	1536	sa.sa_handler = sighandler;
1384	sigfillset (&sa.sa_mask);	1537	sigfillset (&sa.sa_mask);
…		…
1417		1570
1418	void	1571	void
1419	ev_child_stop (EV_P_ struct ev_child *w)	1572	ev_child_stop (EV_P_ struct ev_child *w)
1420	{	1573	{
1421	ev_clear_pending (EV_A_ (W)w);	1574	ev_clear_pending (EV_A_ (W)w);
1422	if (ev_is_active (w))	1575	if (!ev_is_active (w))
1423	return;	1576	return;
1424		1577
1425	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1578	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1426	ev_stop (EV_A_ (W)w);	1579	ev_stop (EV_A_ (W)w);
1427	}	1580	}
…		…
1462	}	1615	}
1463		1616
1464	void	1617	void
1465	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1618	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1466	{	1619	{
1467	struct ev_once *once = ev_malloc (sizeof (struct ev_once));	1620	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1468		1621
1469	if (!once)	1622	if (!once)
1470	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1623	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1471	else	1624	else
1472	{	1625	{
1473	once->cb = cb;	1626	once->cb = cb;
1474	once->arg = arg;	1627	once->arg = arg;
1475		1628
1476	ev_watcher_init (&once->io, once_cb_io);	1629	ev_init (&once->io, once_cb_io);
1477	if (fd >= 0)	1630	if (fd >= 0)
1478	{	1631	{
1479	ev_io_set (&once->io, fd, events);	1632	ev_io_set (&once->io, fd, events);
1480	ev_io_start (EV_A_ &once->io);	1633	ev_io_start (EV_A_ &once->io);
1481	}	1634	}
1482		1635
1483	ev_watcher_init (&once->to, once_cb_to);	1636	ev_init (&once->to, once_cb_to);
1484	if (timeout >= 0.)	1637	if (timeout >= 0.)
1485	{	1638	{
1486	ev_timer_set (&once->to, timeout, 0.);	1639	ev_timer_set (&once->to, timeout, 0.);
1487	ev_timer_start (EV_A_ &once->to);	1640	ev_timer_start (EV_A_ &once->to);
1488	}	1641	}
1489	}	1642	}
1490	}	1643	}
1491		1644
		1645	#ifdef __cplusplus
		1646	}
		1647	#endif
		1648

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Comparing libev/ev.c (file contents): Revision 1.69 by root, Tue Nov 6 00:10:04 2007 UTC vs. Revision 1.114 by root, Mon Nov 12 20:03:39 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.69 by root, Tue Nov 6 00:10:04 2007 UTC vs.
Revision 1.114 by root, Mon Nov 12 20:03:39 2007 UTC