[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 1.119 by root, Fri Nov 16 01:43:52 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
32	# include "config.h"	37	# include "config.h"
33		38
34	# if HAVE_CLOCK_GETTIME	39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	44	# define EV_USE_REALTIME 1
		45	# endif
37	# endif	46	# endif
38		47
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
40	# define EV_USE_SELECT 1	49	# define EV_USE_SELECT 1
41	# endif	50	# endif
42		51
43	# if HAVE_POLL && HAVE_POLL_H	52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
44	# define EV_USE_POLL 1	53	# define EV_USE_POLL 1
45	# endif	54	# endif
46		55
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	56	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
48	# define EV_USE_EPOLL 1	57	# define EV_USE_EPOLL 1
49	# endif	58	# endif
50		59
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
52	# define EV_USE_KQUEUE 1	61	# define EV_USE_KQUEUE 1
53	# endif	62	# endif
54		63
		64	# if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT)
		65	# define EV_USE_PORT 1
		66	# endif
		67
55	#endif	68	#endif
56		69
57	#include <math.h>	70	#include <math.h>
58	#include <stdlib.h>	71	#include <stdlib.h>
59	#include <unistd.h>
60	#include <fcntl.h>	72	#include <fcntl.h>
61	#include <signal.h>
62	#include <stddef.h>	73	#include <stddef.h>
63		74
64	#include <stdio.h>	75	#include <stdio.h>
65		76
66	#include <assert.h>	77	#include <assert.h>
67	#include <errno.h>	78	#include <errno.h>
68	#include <sys/types.h>	79	#include <sys/types.h>
		80	#include <time.h>
		81
		82	#include <signal.h>
		83
69	#ifndef WIN32	84	#ifndef _WIN32
		85	# include <unistd.h>
		86	# include <sys/time.h>
70	# include <sys/wait.h>	87	# include <sys/wait.h>
		88	#else
		89	# define WIN32_LEAN_AND_MEAN
		90	# include <windows.h>
		91	# ifndef EV_SELECT_IS_WINSOCKET
		92	# define EV_SELECT_IS_WINSOCKET 1
71	#endif	93	# endif
72	#include <sys/time.h>	94	#endif
73	#include <time.h>
74		95
75	/**/	96	/**/
76		97
77	#ifndef EV_USE_MONOTONIC	98	#ifndef EV_USE_MONOTONIC
78	# define EV_USE_MONOTONIC 1	99	# define EV_USE_MONOTONIC 1
79	#endif	100	#endif
80		101
		102	#ifndef EV_USE_REALTIME
		103	# define EV_USE_REALTIME 1
		104	#endif
		105
81	#ifndef EV_USE_SELECT	106	#ifndef EV_USE_SELECT
82	# define EV_USE_SELECT 1	107	# define EV_USE_SELECT 1
		108	# define EV_SELECT_USE_FD_SET 1
83	#endif	109	#endif
84		110
85	#ifndef EV_USE_POLL	111	#ifndef EV_USE_POLL
86	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	112	# ifdef _WIN32
		113	# define EV_USE_POLL 0
		114	# else
		115	# define EV_USE_POLL 1
		116	# endif
87	#endif	117	#endif
88		118
89	#ifndef EV_USE_EPOLL	119	#ifndef EV_USE_EPOLL
90	# define EV_USE_EPOLL 0	120	# define EV_USE_EPOLL 0
91	#endif	121	#endif
92		122
93	#ifndef EV_USE_KQUEUE	123	#ifndef EV_USE_KQUEUE
94	# define EV_USE_KQUEUE 0	124	# define EV_USE_KQUEUE 0
95	#endif	125	#endif
96		126
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	127	#ifndef EV_USE_PORT
106	# define EV_USE_REALTIME 1	128	# define EV_USE_PORT 0
107	#endif	129	#endif
108		130
109	/**/	131	/**/
		132
		133	/* darwin simply cannot be helped */
		134	#ifdef __APPLE__
		135	# undef EV_USE_POLL
		136	# undef EV_USE_KQUEUE
		137	#endif
110		138
111	#ifndef CLOCK_MONOTONIC	139	#ifndef CLOCK_MONOTONIC
112	# undef EV_USE_MONOTONIC	140	# undef EV_USE_MONOTONIC
113	# define EV_USE_MONOTONIC 0	141	# define EV_USE_MONOTONIC 0
114	#endif	142	#endif
115		143
116	#ifndef CLOCK_REALTIME	144	#ifndef CLOCK_REALTIME
117	# undef EV_USE_REALTIME	145	# undef EV_USE_REALTIME
118	# define EV_USE_REALTIME 0	146	# define EV_USE_REALTIME 0
		147	#endif
		148
		149	#if EV_SELECT_IS_WINSOCKET
		150	# include <winsock.h>
119	#endif	151	#endif
120		152
121	/**/	153	/**/
122		154
123	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	155	#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) */	156	#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 */	157	#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 */	158	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
127		159
		160	#ifdef EV_H
		161	# include EV_H
		162	#else
128	#include "ev.h"	163	# include "ev.h"
		164	#endif
129		165
130	#if __GNUC__ >= 3	166	#if __GNUC__ >= 3
131	# define expect(expr,value) __builtin_expect ((expr),(value))	167	# define expect(expr,value) __builtin_expect ((expr),(value))
132	# define inline inline	168	# define inline inline
133	#else	169	#else
…		…
139	#define expect_true(expr) expect ((expr) != 0, 1)	175	#define expect_true(expr) expect ((expr) != 0, 1)
140		176
141	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	177	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	178	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
143		179
		180	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		181	#define EMPTY2(a,b) /* used to suppress some warnings */
		182
144	typedef struct ev_watcher *W;	183	typedef struct ev_watcher *W;
145	typedef struct ev_watcher_list *WL;	184	typedef struct ev_watcher_list *WL;
146	typedef struct ev_watcher_time *WT;	185	typedef struct ev_watcher_time *WT;
147		186
148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	187	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149		188
150	#if WIN32	189	#ifdef _WIN32
151	/* note: the comment below could not be substantiated, but what would I care */	190	# include "ev_win32.c"
152	/* MSDN says this is required to handle SIGFPE */
153	volatile double SIGFPE_REQ = 0.0f;
154	#endif	191	#endif
155		192
156	/*****************************************************************************/	193	/*****************************************************************************/
157		194
158	static void (*syserr_cb)(void);	195	static void (syserr_cb)(const char msg);
159		196
160	void ev_set_syserr_cb (void (*cb)(void))	197	void ev_set_syserr_cb (void (cb)(const char msg))
161	{	198	{
162	syserr_cb = cb;	199	syserr_cb = cb;
163	}	200	}
164		201
165	static void	202	static void
166	syserr (void)	203	syserr (const char *msg)
167	{	204	{
		205	if (!msg)
		206	msg = "(libev) system error";
		207
168	if (syserr_cb)	208	if (syserr_cb)
169	syserr_cb ();	209	syserr_cb (msg);
170	else	210	else
171	{	211	{
172	perror ("libev");	212	perror (msg);
173	abort ();	213	abort ();
174	}	214	}
175	}	215	}
176		216
177	static void (alloc)(void *ptr, long size);	217	static void (alloc)(void *ptr, long size);
…		…
203	typedef struct	243	typedef struct
204	{	244	{
205	WL head;	245	WL head;
206	unsigned char events;	246	unsigned char events;
207	unsigned char reify;	247	unsigned char reify;
		248	#if EV_SELECT_IS_WINSOCKET
		249	SOCKET handle;
		250	#endif
208	} ANFD;	251	} ANFD;
209		252
210	typedef struct	253	typedef struct
211	{	254	{
212	W w;	255	W w;
213	int events;	256	int events;
214	} ANPENDING;	257	} ANPENDING;
215		258
216	#if EV_MULTIPLICITY	259	#if EV_MULTIPLICITY
217		260
218	struct ev_loop	261	struct ev_loop
219	{	262	{
		263	ev_tstamp ev_rt_now;
		264	#define ev_rt_now ((loop)->ev_rt_now)
220	# define VAR(name,decl) decl;	265	#define VAR(name,decl) decl;
221	# include "ev_vars.h"	266	#include "ev_vars.h"
222	};
223	# undef VAR	267	#undef VAR
		268	};
224	# include "ev_wrap.h"	269	#include "ev_wrap.h"
		270
		271	static struct ev_loop default_loop_struct;
		272	struct ev_loop *ev_default_loop_ptr;
225		273
226	#else	274	#else
227		275
		276	ev_tstamp ev_rt_now;
228	# define VAR(name,decl) static decl;	277	#define VAR(name,decl) static decl;
229	# include "ev_vars.h"	278	#include "ev_vars.h"
230	# undef VAR	279	#undef VAR
		280
		281	static int ev_default_loop_ptr;
231		282
232	#endif	283	#endif
233		284
234	/*****************************************************************************/	285	/*****************************************************************************/
235		286
236	inline ev_tstamp	287	ev_tstamp
237	ev_time (void)	288	ev_time (void)
238	{	289	{
239	#if EV_USE_REALTIME	290	#if EV_USE_REALTIME
240	struct timespec ts;	291	struct timespec ts;
241	clock_gettime (CLOCK_REALTIME, &ts);	292	clock_gettime (CLOCK_REALTIME, &ts);
…		…
260	#endif	311	#endif
261		312
262	return ev_time ();	313	return ev_time ();
263	}	314	}
264		315
		316	#if EV_MULTIPLICITY
265	ev_tstamp	317	ev_tstamp
266	ev_now (EV_P)	318	ev_now (EV_P)
267	{	319	{
268	return rt_now;	320	return ev_rt_now;
269	}	321	}
		322	#endif
270		323
271	#define array_roundsize(base,n) ((n) \| 4 & ~3)	324	#define array_roundsize(type,n) (((n) \| 4) & ~3)
272		325
273	#define array_needsize(base,cur,cnt,init) \	326	#define array_needsize(type,base,cur,cnt,init) \
274	if (expect_false ((cnt) > cur)) \	327	if (expect_false ((cnt) > cur)) \
275	{ \	328	{ \
276	int newcnt = cur; \	329	int newcnt = cur; \
277	do \	330	do \
278	{ \	331	{ \
279	newcnt = array_roundsize (base, newcnt << 1); \	332	newcnt = array_roundsize (type, newcnt << 1); \
280	} \	333	} \
281	while ((cnt) > newcnt); \	334	while ((cnt) > newcnt); \
282	\	335	\
283	base = ev_realloc (base, sizeof (base) (newcnt)); \	336	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
284	init (base + cur, newcnt - cur); \	337	init (base + cur, newcnt - cur); \
285	cur = newcnt; \	338	cur = newcnt; \
286	}	339	}
287		340
288	#define array_slim(stem) \	341	#define array_slim(type,stem) \
289	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	342	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
290	{ \	343	{ \
291	stem ## max = array_roundsize (stem ## cnt >> 1); \	344	stem ## max = array_roundsize (stem ## cnt >> 1); \
292	base = ev_realloc (base, sizeof (base) (stem ## max)); \	345	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
293	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	346	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
294	}	347	}
295		348
296	#define array_free(stem, idx) \	349	#define array_free(stem, idx) \
297	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	350	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
…		…
309		362
310	++base;	363	++base;
311	}	364	}
312	}	365	}
313		366
314	static void	367	void
315	event (EV_P_ W w, int events)	368	ev_feed_event (EV_P_ void *w, int revents)
316	{	369	{
		370	W w_ = (W)w;
		371
317	if (w->pending)	372	if (w_->pending)
318	{	373	{
319	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	374	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
320	return;	375	return;
321	}	376	}
322		377
323	w->pending = ++pendingcnt [ABSPRI (w)];	378	w_->pending = ++pendingcnt [ABSPRI (w_)];
324	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	379	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
325	pendings [ABSPRI (w)][w->pending - 1].w = w;	380	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
326	pendings [ABSPRI (w)][w->pending - 1].events = events;	381	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
327	}	382	}
328		383
329	static void	384	static void
330	queue_events (EV_P_ W *events, int eventcnt, int type)	385	queue_events (EV_P_ W *events, int eventcnt, int type)
331	{	386	{
332	int i;	387	int i;
333		388
334	for (i = 0; i < eventcnt; ++i)	389	for (i = 0; i < eventcnt; ++i)
335	event (EV_A_ events [i], type);	390	ev_feed_event (EV_A_ events [i], type);
336	}	391	}
337		392
338	static void	393	inline void
339	fd_event (EV_P_ int fd, int events)	394	fd_event (EV_P_ int fd, int revents)
340	{	395	{
341	ANFD *anfd = anfds + fd;	396	ANFD *anfd = anfds + fd;
342	struct ev_io *w;	397	struct ev_io *w;
343		398
344	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	399	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
345	{	400	{
346	int ev = w->events & events;	401	int ev = w->events & revents;
347		402
348	if (ev)	403	if (ev)
349	event (EV_A_ (W)w, ev);	404	ev_feed_event (EV_A_ (W)w, ev);
350	}	405	}
		406	}
		407
		408	void
		409	ev_feed_fd_event (EV_P_ int fd, int revents)
		410	{
		411	fd_event (EV_A_ fd, revents);
351	}	412	}
352		413
353	/*****************************************************************************/	414	/*****************************************************************************/
354		415
355	static void	416	static void
…		…
366	int events = 0;	427	int events = 0;
367		428
368	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	429	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
369	events \|= w->events;	430	events \|= w->events;
370		431
		432	#if EV_SELECT_IS_WINSOCKET
		433	if (events)
		434	{
		435	unsigned long argp;
		436	anfd->handle = _get_osfhandle (fd);
		437	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		438	}
		439	#endif
		440
371	anfd->reify = 0;	441	anfd->reify = 0;
372		442
373	method_modify (EV_A_ fd, anfd->events, events);	443	method_modify (EV_A_ fd, anfd->events, events);
374	anfd->events = events;	444	anfd->events = events;
375	}	445	}
…		…
378	}	448	}
379		449
380	static void	450	static void
381	fd_change (EV_P_ int fd)	451	fd_change (EV_P_ int fd)
382	{	452	{
383	if (anfds [fd].reify \|\| fdchangecnt < 0)	453	if (anfds [fd].reify)
384	return;	454	return;
385		455
386	anfds [fd].reify = 1;	456	anfds [fd].reify = 1;
387		457
388	++fdchangecnt;	458	++fdchangecnt;
389	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	459	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
390	fdchanges [fdchangecnt - 1] = fd;	460	fdchanges [fdchangecnt - 1] = fd;
391	}	461	}
392		462
393	static void	463	static void
394	fd_kill (EV_P_ int fd)	464	fd_kill (EV_P_ int fd)
…		…
396	struct ev_io *w;	466	struct ev_io *w;
397		467
398	while ((w = (struct ev_io *)anfds [fd].head))	468	while ((w = (struct ev_io *)anfds [fd].head))
399	{	469	{
400	ev_io_stop (EV_A_ w);	470	ev_io_stop (EV_A_ w);
401	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	471	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
402	}	472	}
		473	}
		474
		475	static int
		476	fd_valid (int fd)
		477	{
		478	#ifdef _WIN32
		479	return _get_osfhandle (fd) != -1;
		480	#else
		481	return fcntl (fd, F_GETFD) != -1;
		482	#endif
403	}	483	}
404		484
405	/* called on EBADF to verify fds */	485	/* called on EBADF to verify fds */
406	static void	486	static void
407	fd_ebadf (EV_P)	487	fd_ebadf (EV_P)
408	{	488	{
409	int fd;	489	int fd;
410		490
411	for (fd = 0; fd < anfdmax; ++fd)	491	for (fd = 0; fd < anfdmax; ++fd)
412	if (anfds [fd].events)	492	if (anfds [fd].events)
413	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	493	if (!fd_valid (fd) == -1 && errno == EBADF)
414	fd_kill (EV_A_ fd);	494	fd_kill (EV_A_ fd);
415	}	495	}
416		496
417	/* called on ENOMEM in select/poll to kill some fds and retry */	497	/* called on ENOMEM in select/poll to kill some fds and retry */
418	static void	498	static void
…		…
426	fd_kill (EV_A_ fd);	506	fd_kill (EV_A_ fd);
427	return;	507	return;
428	}	508	}
429	}	509	}
430		510
431	/* susually called after fork if method needs to re-arm all fds from scratch */	511	/* usually called after fork if method needs to re-arm all fds from scratch */
432	static void	512	static void
433	fd_rearm_all (EV_P)	513	fd_rearm_all (EV_P)
434	{	514	{
435	int fd;	515	int fd;
436		516
…		…
484		564
485	heap [k] = w;	565	heap [k] = w;
486	((W)heap [k])->active = k + 1;	566	((W)heap [k])->active = k + 1;
487	}	567	}
488		568
		569	inline void
		570	adjustheap (WT *heap, int N, int k)
		571	{
		572	upheap (heap, k);
		573	downheap (heap, N, k);
		574	}
		575
489	/*****************************************************************************/	576	/*****************************************************************************/
490		577
491	typedef struct	578	typedef struct
492	{	579	{
493	WL head;	580	WL head;
…		…
514	}	601	}
515		602
516	static void	603	static void
517	sighandler (int signum)	604	sighandler (int signum)
518	{	605	{
519	#if WIN32	606	#if _WIN32
520	signal (signum, sighandler);	607	signal (signum, sighandler);
521	#endif	608	#endif
522		609
523	signals [signum - 1].gotsig = 1;	610	signals [signum - 1].gotsig = 1;
524		611
…		…
529	write (sigpipe [1], &signum, 1);	616	write (sigpipe [1], &signum, 1);
530	errno = old_errno;	617	errno = old_errno;
531	}	618	}
532	}	619	}
533		620
		621	void
		622	ev_feed_signal_event (EV_P_ int signum)
		623	{
		624	WL w;
		625
		626	#if EV_MULTIPLICITY
		627	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		628	#endif
		629
		630	--signum;
		631
		632	if (signum < 0 \|\| signum >= signalmax)
		633	return;
		634
		635	signals [signum].gotsig = 0;
		636
		637	for (w = signals [signum].head; w; w = w->next)
		638	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		639	}
		640
534	static void	641	static void
535	sigcb (EV_P_ struct ev_io *iow, int revents)	642	sigcb (EV_P_ struct ev_io *iow, int revents)
536	{	643	{
537	WL w;
538	int signum;	644	int signum;
539		645
540	read (sigpipe [0], &revents, 1);	646	read (sigpipe [0], &revents, 1);
541	gotsig = 0;	647	gotsig = 0;
542		648
543	for (signum = signalmax; signum--; )	649	for (signum = signalmax; signum--; )
544	if (signals [signum].gotsig)	650	if (signals [signum].gotsig)
545	{	651	ev_feed_signal_event (EV_A_ signum + 1);
546	signals [signum].gotsig = 0;	652	}
547		653
548	for (w = signals [signum].head; w; w = w->next)	654	inline void
549	event (EV_A_ (W)w, EV_SIGNAL);	655	fd_intern (int fd)
550	}	656	{
		657	#ifdef _WIN32
		658	int arg = 1;
		659	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		660	#else
		661	fcntl (fd, F_SETFD, FD_CLOEXEC);
		662	fcntl (fd, F_SETFL, O_NONBLOCK);
		663	#endif
551	}	664	}
552		665
553	static void	666	static void
554	siginit (EV_P)	667	siginit (EV_P)
555	{	668	{
556	#ifndef WIN32	669	fd_intern (sigpipe [0]);
557	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	670	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		671
565	ev_io_set (&sigev, sigpipe [0], EV_READ);	672	ev_io_set (&sigev, sigpipe [0], EV_READ);
566	ev_io_start (EV_A_ &sigev);	673	ev_io_start (EV_A_ &sigev);
567	ev_unref (EV_A); /* child watcher should not keep loop alive */	674	ev_unref (EV_A); /* child watcher should not keep loop alive */
568	}	675	}
569		676
570	/*****************************************************************************/	677	/*****************************************************************************/
571		678
572	#ifndef WIN32
573
574	static struct ev_child *childs [PID_HASHSIZE];	679	static struct ev_child *childs [PID_HASHSIZE];
		680
		681	#ifndef _WIN32
		682
575	static struct ev_signal childev;	683	static struct ev_signal childev;
576		684
577	#ifndef WCONTINUED	685	#ifndef WCONTINUED
578	# define WCONTINUED 0	686	# define WCONTINUED 0
579	#endif	687	#endif
…		…
587	if (w->pid == pid \|\| !w->pid)	695	if (w->pid == pid \|\| !w->pid)
588	{	696	{
589	ev_priority (w) = ev_priority (sw); /* need to do it now */	697	ev_priority (w) = ev_priority (sw); /* need to do it now */
590	w->rpid = pid;	698	w->rpid = pid;
591	w->rstatus = status;	699	w->rstatus = status;
592	event (EV_A_ (W)w, EV_CHILD);	700	ev_feed_event (EV_A_ (W)w, EV_CHILD);
593	}	701	}
594	}	702	}
595		703
596	static void	704	static void
597	childcb (EV_P_ struct ev_signal *sw, int revents)	705	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
599	int pid, status;	707	int pid, status;
600		708
601	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	709	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
602	{	710	{
603	/* make sure we are called again until all childs have been reaped */	711	/* make sure we are called again until all childs have been reaped */
604	event (EV_A_ (W)sw, EV_SIGNAL);	712	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
605		713
606	child_reap (EV_A_ sw, pid, pid, status);	714	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 */	715	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
608	}	716	}
609	}	717	}
610		718
611	#endif	719	#endif
612		720
613	/*****************************************************************************/	721	/*****************************************************************************/
614		722
		723	#if EV_USE_PORT
		724	# include "ev_port.c"
		725	#endif
615	#if EV_USE_KQUEUE	726	#if EV_USE_KQUEUE
616	# include "ev_kqueue.c"	727	# include "ev_kqueue.c"
617	#endif	728	#endif
618	#if EV_USE_EPOLL	729	#if EV_USE_EPOLL
619	# include "ev_epoll.c"	730	# include "ev_epoll.c"
…		…
639		750
640	/* return true if we are running with elevated privileges and should ignore env variables */	751	/* return true if we are running with elevated privileges and should ignore env variables */
641	static int	752	static int
642	enable_secure (void)	753	enable_secure (void)
643	{	754	{
644	#ifdef WIN32	755	#ifdef _WIN32
645	return 0;	756	return 0;
646	#else	757	#else
647	return getuid () != geteuid ()	758	return getuid () != geteuid ()
648	\|\| getgid () != getegid ();	759	\|\| getgid () != getegid ();
649	#endif	760	#endif
650	}	761	}
651		762
652	int	763	unsigned int
653	ev_method (EV_P)	764	ev_method (EV_P)
654	{	765	{
655	return method;	766	return method;
656	}	767	}
657		768
658	static void	769	static void
659	loop_init (EV_P_ int methods)	770	loop_init (EV_P_ unsigned int flags)
660	{	771	{
661	if (!method)	772	if (!method)
662	{	773	{
663	#if EV_USE_MONOTONIC	774	#if EV_USE_MONOTONIC
664	{	775	{
…		…
666	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	777	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
667	have_monotonic = 1;	778	have_monotonic = 1;
668	}	779	}
669	#endif	780	#endif
670		781
671	rt_now = ev_time ();	782	ev_rt_now = ev_time ();
672	mn_now = get_clock ();	783	mn_now = get_clock ();
673	now_floor = mn_now;	784	now_floor = mn_now;
674	rtmn_diff = rt_now - mn_now;	785	rtmn_diff = ev_rt_now - mn_now;
675		786
676	if (methods == EVMETHOD_AUTO)	787	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
677	if (!enable_secure () && getenv ("LIBEV_METHODS"))
678	methods = atoi (getenv ("LIBEV_METHODS"));	788	flags = atoi (getenv ("LIBEV_FLAGS"));
679	else	789
680	methods = EVMETHOD_ANY;	790	if (!(flags & 0x0000ffff))
		791	flags \|= 0x0000ffff;
681		792
682	method = 0;	793	method = 0;
683	#if EV_USE_WIN32	794	#if EV_USE_PORT
684	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	795	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);
685	#endif	796	#endif
686	#if EV_USE_KQUEUE	797	#if EV_USE_KQUEUE
687	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	798	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
688	#endif	799	#endif
689	#if EV_USE_EPOLL	800	#if EV_USE_EPOLL
690	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	801	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
691	#endif	802	#endif
692	#if EV_USE_POLL	803	#if EV_USE_POLL
693	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	804	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
694	#endif	805	#endif
695	#if EV_USE_SELECT	806	#if EV_USE_SELECT
696	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	807	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
697	#endif	808	#endif
		809
		810	ev_init (&sigev, sigcb);
		811	ev_set_priority (&sigev, EV_MAXPRI);
698	}	812	}
699	}	813	}
700		814
701	void	815	void
702	loop_destroy (EV_P)	816	loop_destroy (EV_P)
703	{	817	{
704	int i;	818	int i;
705		819
706	#if EV_USE_WIN32	820	#if EV_USE_PORT
707	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	821	if (method == EVMETHOD_PORT ) port_destroy (EV_A);
708	#endif	822	#endif
709	#if EV_USE_KQUEUE	823	#if EV_USE_KQUEUE
710	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	824	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
711	#endif	825	#endif
712	#if EV_USE_EPOLL	826	#if EV_USE_EPOLL
…		…
720	#endif	834	#endif
721		835
722	for (i = NUMPRI; i--; )	836	for (i = NUMPRI; i--; )
723	array_free (pending, [i]);	837	array_free (pending, [i]);
724		838
		839	/* have to use the microsoft-never-gets-it-right macro */
725	array_free (fdchange, );	840	array_free (fdchange, EMPTY0);
726	array_free (timer, );	841	array_free (timer, EMPTY0);
		842	#if EV_PERIODICS
727	array_free (periodic, );	843	array_free (periodic, EMPTY0);
		844	#endif
728	array_free (idle, );	845	array_free (idle, EMPTY0);
729	array_free (prepare, );	846	array_free (prepare, EMPTY0);
730	array_free (check, );	847	array_free (check, EMPTY0);
731		848
732	method = 0;	849	method = 0;
733	/TODO/
734	}	850	}
735		851
736	void	852	static void
737	loop_fork (EV_P)	853	loop_fork (EV_P)
738	{	854	{
739	/TODO/	855	#if EV_USE_PORT
		856	if (method == EVMETHOD_PORT ) port_fork (EV_A);
		857	#endif
		858	#if EV_USE_KQUEUE
		859	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		860	#endif
740	#if EV_USE_EPOLL	861	#if EV_USE_EPOLL
741	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	862	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
742	#endif	863	#endif
743	#if EV_USE_KQUEUE	864
744	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	865	if (ev_is_active (&sigev))
745	#endif	866	{
		867	/* default loop */
		868
		869	ev_ref (EV_A);
		870	ev_io_stop (EV_A_ &sigev);
		871	close (sigpipe [0]);
		872	close (sigpipe [1]);
		873
		874	while (pipe (sigpipe))
		875	syserr ("(libev) error creating pipe");
		876
		877	siginit (EV_A);
		878	}
		879
		880	postfork = 0;
746	}	881	}
747		882
748	#if EV_MULTIPLICITY	883	#if EV_MULTIPLICITY
749	struct ev_loop *	884	struct ev_loop *
750	ev_loop_new (int methods)	885	ev_loop_new (unsigned int flags)
751	{	886	{
752	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	887	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
753		888
754	memset (loop, 0, sizeof (struct ev_loop));	889	memset (loop, 0, sizeof (struct ev_loop));
755		890
756	loop_init (EV_A_ methods);	891	loop_init (EV_A_ flags);
757		892
758	if (ev_method (EV_A))	893	if (ev_method (EV_A))
759	return loop;	894	return loop;
760		895
761	return 0;	896	return 0;
…		…
769	}	904	}
770		905
771	void	906	void
772	ev_loop_fork (EV_P)	907	ev_loop_fork (EV_P)
773	{	908	{
774	loop_fork (EV_A);	909	postfork = 1;
775	}	910	}
776		911
777	#endif	912	#endif
778		913
779	#if EV_MULTIPLICITY	914	#if EV_MULTIPLICITY
780	struct ev_loop default_loop_struct;
781	static struct ev_loop *default_loop;
782
783	struct ev_loop *	915	struct ev_loop *
		916	ev_default_loop_ (unsigned int flags)
784	#else	917	#else
785	static int default_loop;
786
787	int	918	int
		919	ev_default_loop (unsigned int flags)
788	#endif	920	#endif
789	ev_default_loop (int methods)
790	{	921	{
791	if (sigpipe [0] == sigpipe [1])	922	if (sigpipe [0] == sigpipe [1])
792	if (pipe (sigpipe))	923	if (pipe (sigpipe))
793	return 0;	924	return 0;
794		925
795	if (!default_loop)	926	if (!ev_default_loop_ptr)
796	{	927	{
797	#if EV_MULTIPLICITY	928	#if EV_MULTIPLICITY
798	struct ev_loop *loop = default_loop = &default_loop_struct;	929	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
799	#else	930	#else
800	default_loop = 1;	931	ev_default_loop_ptr = 1;
801	#endif	932	#endif
802		933
803	loop_init (EV_A_ methods);	934	loop_init (EV_A_ flags);
804		935
805	if (ev_method (EV_A))	936	if (ev_method (EV_A))
806	{	937	{
807	ev_watcher_init (&sigev, sigcb);
808	ev_set_priority (&sigev, EV_MAXPRI);
809	siginit (EV_A);	938	siginit (EV_A);
810		939
811	#ifndef WIN32	940	#ifndef _WIN32
812	ev_signal_init (&childev, childcb, SIGCHLD);	941	ev_signal_init (&childev, childcb, SIGCHLD);
813	ev_set_priority (&childev, EV_MAXPRI);	942	ev_set_priority (&childev, EV_MAXPRI);
814	ev_signal_start (EV_A_ &childev);	943	ev_signal_start (EV_A_ &childev);
815	ev_unref (EV_A); /* child watcher should not keep loop alive */	944	ev_unref (EV_A); /* child watcher should not keep loop alive */
816	#endif	945	#endif
817	}	946	}
818	else	947	else
819	default_loop = 0;	948	ev_default_loop_ptr = 0;
820	}	949	}
821		950
822	return default_loop;	951	return ev_default_loop_ptr;
823	}	952	}
824		953
825	void	954	void
826	ev_default_destroy (void)	955	ev_default_destroy (void)
827	{	956	{
828	#if EV_MULTIPLICITY	957	#if EV_MULTIPLICITY
829	struct ev_loop *loop = default_loop;	958	struct ev_loop *loop = ev_default_loop_ptr;
830	#endif	959	#endif
831		960
		961	#ifndef _WIN32
832	ev_ref (EV_A); /* child watcher */	962	ev_ref (EV_A); /* child watcher */
833	ev_signal_stop (EV_A_ &childev);	963	ev_signal_stop (EV_A_ &childev);
		964	#endif
834		965
835	ev_ref (EV_A); /* signal watcher */	966	ev_ref (EV_A); /* signal watcher */
836	ev_io_stop (EV_A_ &sigev);	967	ev_io_stop (EV_A_ &sigev);
837		968
838	close (sigpipe [0]); sigpipe [0] = 0;	969	close (sigpipe [0]); sigpipe [0] = 0;
…		…
843		974
844	void	975	void
845	ev_default_fork (void)	976	ev_default_fork (void)
846	{	977	{
847	#if EV_MULTIPLICITY	978	#if EV_MULTIPLICITY
848	struct ev_loop *loop = default_loop;	979	struct ev_loop *loop = ev_default_loop_ptr;
849	#endif	980	#endif
850		981
851	loop_fork (EV_A);	982	if (method)
852		983	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	}	984	}
861		985
862	/*****************************************************************************/	986	/*****************************************************************************/
		987
		988	static int
		989	any_pending (EV_P)
		990	{
		991	int pri;
		992
		993	for (pri = NUMPRI; pri--; )
		994	if (pendingcnt [pri])
		995	return 1;
		996
		997	return 0;
		998	}
863		999
864	static void	1000	static void
865	call_pending (EV_P)	1001	call_pending (EV_P)
866	{	1002	{
867	int pri;	1003	int pri;
…		…
872	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1008	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
873		1009
874	if (p->w)	1010	if (p->w)
875	{	1011	{
876	p->w->pending = 0;	1012	p->w->pending = 0;
877	p->w->cb (EV_A_ p->w, p->events);	1013	EV_CB_INVOKE (p->w, p->events);
878	}	1014	}
879	}	1015	}
880	}	1016	}
881		1017
882	static void	1018	static void
…		…
890		1026
891	/* first reschedule or stop timer */	1027	/* first reschedule or stop timer */
892	if (w->repeat)	1028	if (w->repeat)
893	{	1029	{
894	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1030	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1031
895	((WT)w)->at = mn_now + w->repeat;	1032	((WT)w)->at += w->repeat;
		1033	if (((WT)w)->at < mn_now)
		1034	((WT)w)->at = mn_now;
		1035
896	downheap ((WT *)timers, timercnt, 0);	1036	downheap ((WT *)timers, timercnt, 0);
897	}	1037	}
898	else	1038	else
899	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1039	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
900		1040
901	event (EV_A_ (W)w, EV_TIMEOUT);	1041	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
902	}	1042	}
903	}	1043	}
904		1044
		1045	#if EV_PERIODICS
905	static void	1046	static void
906	periodics_reify (EV_P)	1047	periodics_reify (EV_P)
907	{	1048	{
908	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1049	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
909	{	1050	{
910	struct ev_periodic *w = periodics [0];	1051	struct ev_periodic *w = periodics [0];
911		1052
912	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1053	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
913		1054
914	/* first reschedule or stop timer */	1055	/* first reschedule or stop timer */
915	if (w->interval)	1056	if (w->reschedule_cb)
916	{	1057	{
		1058	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1059	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1060	downheap ((WT *)periodics, periodiccnt, 0);
		1061	}
		1062	else if (w->interval)
		1063	{
917	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1064	((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));	1065	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);	1066	downheap ((WT *)periodics, periodiccnt, 0);
920	}	1067	}
921	else	1068	else
922	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1069	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
923		1070
924	event (EV_A_ (W)w, EV_PERIODIC);	1071	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
925	}	1072	}
926	}	1073	}
927		1074
928	static void	1075	static void
929	periodics_reschedule (EV_P)	1076	periodics_reschedule (EV_P)
…		…
933	/* adjust periodics after time jump */	1080	/* adjust periodics after time jump */
934	for (i = 0; i < periodiccnt; ++i)	1081	for (i = 0; i < periodiccnt; ++i)
935	{	1082	{
936	struct ev_periodic *w = periodics [i];	1083	struct ev_periodic *w = periodics [i];
937		1084
		1085	if (w->reschedule_cb)
		1086	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
938	if (w->interval)	1087	else if (w->interval)
939	{
940	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1088	((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	}	1089	}
		1090
		1091	/* now rebuild the heap */
		1092	for (i = periodiccnt >> 1; i--; )
		1093	downheap ((WT *)periodics, periodiccnt, i);
951	}	1094	}
		1095	#endif
952		1096
953	inline int	1097	inline int
954	time_update_monotonic (EV_P)	1098	time_update_monotonic (EV_P)
955	{	1099	{
956	mn_now = get_clock ();	1100	mn_now = get_clock ();
957		1101
958	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1102	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
959	{	1103	{
960	rt_now = rtmn_diff + mn_now;	1104	ev_rt_now = rtmn_diff + mn_now;
961	return 0;	1105	return 0;
962	}	1106	}
963	else	1107	else
964	{	1108	{
965	now_floor = mn_now;	1109	now_floor = mn_now;
966	rt_now = ev_time ();	1110	ev_rt_now = ev_time ();
967	return 1;	1111	return 1;
968	}	1112	}
969	}	1113	}
970		1114
971	static void	1115	static void
…		…
980	{	1124	{
981	ev_tstamp odiff = rtmn_diff;	1125	ev_tstamp odiff = rtmn_diff;
982		1126
983	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1127	for (i = 4; --i; ) /* loop a few times, before making important decisions */
984	{	1128	{
985	rtmn_diff = rt_now - mn_now;	1129	rtmn_diff = ev_rt_now - mn_now;
986		1130
987	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1131	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
988	return; /* all is well */	1132	return; /* all is well */
989		1133
990	rt_now = ev_time ();	1134	ev_rt_now = ev_time ();
991	mn_now = get_clock ();	1135	mn_now = get_clock ();
992	now_floor = mn_now;	1136	now_floor = mn_now;
993	}	1137	}
994		1138
		1139	# if EV_PERIODICS
995	periodics_reschedule (EV_A);	1140	periodics_reschedule (EV_A);
		1141	# endif
996	/* no timer adjustment, as the monotonic clock doesn't jump */	1142	/* no timer adjustment, as the monotonic clock doesn't jump */
997	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1143	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
998	}	1144	}
999	}	1145	}
1000	else	1146	else
1001	#endif	1147	#endif
1002	{	1148	{
1003	rt_now = ev_time ();	1149	ev_rt_now = ev_time ();
1004		1150
1005	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1151	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1006	{	1152	{
		1153	#if EV_PERIODICS
1007	periodics_reschedule (EV_A);	1154	periodics_reschedule (EV_A);
		1155	#endif
1008		1156
1009	/* adjust timers. this is easy, as the offset is the same for all */	1157	/* adjust timers. this is easy, as the offset is the same for all */
1010	for (i = 0; i < timercnt; ++i)	1158	for (i = 0; i < timercnt; ++i)
1011	((WT)timers [i])->at += rt_now - mn_now;	1159	((WT)timers [i])->at += ev_rt_now - mn_now;
1012	}	1160	}
1013		1161
1014	mn_now = rt_now;	1162	mn_now = ev_rt_now;
1015	}	1163	}
1016	}	1164	}
1017		1165
1018	void	1166	void
1019	ev_ref (EV_P)	1167	ev_ref (EV_P)
…		…
1033	ev_loop (EV_P_ int flags)	1181	ev_loop (EV_P_ int flags)
1034	{	1182	{
1035	double block;	1183	double block;
1036	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1184	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
1037		1185
1038	do	1186	while (activecnt)
1039	{	1187	{
1040	/* queue check watchers (and execute them) */	1188	/* queue check watchers (and execute them) */
1041	if (expect_false (preparecnt))	1189	if (expect_false (preparecnt))
1042	{	1190	{
1043	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1191	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1044	call_pending (EV_A);	1192	call_pending (EV_A);
1045	}	1193	}
1046		1194
		1195	/* we might have forked, so reify kernel state if necessary */
		1196	if (expect_false (postfork))
		1197	loop_fork (EV_A);
		1198
1047	/* update fd-related kernel structures */	1199	/* update fd-related kernel structures */
1048	fd_reify (EV_A);	1200	fd_reify (EV_A);
1049		1201
1050	/* calculate blocking time */	1202	/* calculate blocking time */
1051		1203
1052	/* we only need this for !monotonic clockor timers, but as we basically	1204	/* we only need this for !monotonic clock or timers, but as we basically
1053	always have timers, we just calculate it always */	1205	always have timers, we just calculate it always */
1054	#if EV_USE_MONOTONIC	1206	#if EV_USE_MONOTONIC
1055	if (expect_true (have_monotonic))	1207	if (expect_true (have_monotonic))
1056	time_update_monotonic (EV_A);	1208	time_update_monotonic (EV_A);
1057	else	1209	else
1058	#endif	1210	#endif
1059	{	1211	{
1060	rt_now = ev_time ();	1212	ev_rt_now = ev_time ();
1061	mn_now = rt_now;	1213	mn_now = ev_rt_now;
1062	}	1214	}
1063		1215
1064	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1216	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1065	block = 0.;	1217	block = 0.;
1066	else	1218	else
…		…
1071	{	1223	{
1072	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1224	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
1073	if (block > to) block = to;	1225	if (block > to) block = to;
1074	}	1226	}
1075		1227
		1228	#if EV_PERIODICS
1076	if (periodiccnt)	1229	if (periodiccnt)
1077	{	1230	{
1078	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1231	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
1079	if (block > to) block = to;	1232	if (block > to) block = to;
1080	}	1233	}
		1234	#endif
1081		1235
1082	if (block < 0.) block = 0.;	1236	if (block < 0.) block = 0.;
1083	}	1237	}
1084		1238
1085	method_poll (EV_A_ block);	1239	method_poll (EV_A_ block);
1086		1240
1087	/* update rt_now, do magic */	1241	/* update ev_rt_now, do magic */
1088	time_update (EV_A);	1242	time_update (EV_A);
1089		1243
1090	/* queue pending timers and reschedule them */	1244	/* queue pending timers and reschedule them */
1091	timers_reify (EV_A); /* relative timers called last */	1245	timers_reify (EV_A); /* relative timers called last */
		1246	#if EV_PERIODICS
1092	periodics_reify (EV_A); /* absolute timers called first */	1247	periodics_reify (EV_A); /* absolute timers called first */
		1248	#endif
1093		1249
1094	/* queue idle watchers unless io or timers are pending */	1250	/* queue idle watchers unless io or timers are pending */
1095	if (!pendingcnt)	1251	if (idlecnt && !any_pending (EV_A))
1096	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1252	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1097		1253
1098	/* queue check watchers, to be executed first */	1254	/* queue check watchers, to be executed first */
1099	if (checkcnt)	1255	if (checkcnt)
1100	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1256	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1101		1257
1102	call_pending (EV_A);	1258	call_pending (EV_A);
		1259
		1260	if (loop_done)
		1261	break;
1103	}	1262	}
1104	while (activecnt && !loop_done);
1105		1263
1106	if (loop_done != 2)	1264	if (loop_done != 2)
1107	loop_done = 0;	1265	loop_done = 0;
1108	}	1266	}
1109		1267
…		…
1175	return;	1333	return;
1176		1334
1177	assert (("ev_io_start called with negative fd", fd >= 0));	1335	assert (("ev_io_start called with negative fd", fd >= 0));
1178		1336
1179	ev_start (EV_A_ (W)w, 1);	1337	ev_start (EV_A_ (W)w, 1);
1180	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1338	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1181	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1339	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1182		1340
1183	fd_change (EV_A_ fd);	1341	fd_change (EV_A_ fd);
1184	}	1342	}
1185		1343
…		…
1188	{	1346	{
1189	ev_clear_pending (EV_A_ (W)w);	1347	ev_clear_pending (EV_A_ (W)w);
1190	if (!ev_is_active (w))	1348	if (!ev_is_active (w))
1191	return;	1349	return;
1192		1350
		1351	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1352
1193	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1353	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1194	ev_stop (EV_A_ (W)w);	1354	ev_stop (EV_A_ (W)w);
1195		1355
1196	fd_change (EV_A_ w->fd);	1356	fd_change (EV_A_ w->fd);
1197	}	1357	}
…		…
1205	((WT)w)->at += mn_now;	1365	((WT)w)->at += mn_now;
1206		1366
1207	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1367	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1208		1368
1209	ev_start (EV_A_ (W)w, ++timercnt);	1369	ev_start (EV_A_ (W)w, ++timercnt);
1210	array_needsize (timers, timermax, timercnt, );	1370	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1211	timers [timercnt - 1] = w;	1371	timers [timercnt - 1] = w;
1212	upheap ((WT *)timers, timercnt - 1);	1372	upheap ((WT *)timers, timercnt - 1);
1213		1373
1214	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1374	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1215	}	1375	}
…		…
1224	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1384	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1225		1385
1226	if (((W)w)->active < timercnt--)	1386	if (((W)w)->active < timercnt--)
1227	{	1387	{
1228	timers [((W)w)->active - 1] = timers [timercnt];	1388	timers [((W)w)->active - 1] = timers [timercnt];
1229	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1389	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1230	}	1390	}
1231		1391
1232	((WT)w)->at = w->repeat;	1392	((WT)w)->at -= mn_now;
1233		1393
1234	ev_stop (EV_A_ (W)w);	1394	ev_stop (EV_A_ (W)w);
1235	}	1395	}
1236		1396
1237	void	1397	void
…		…
1240	if (ev_is_active (w))	1400	if (ev_is_active (w))
1241	{	1401	{
1242	if (w->repeat)	1402	if (w->repeat)
1243	{	1403	{
1244	((WT)w)->at = mn_now + w->repeat;	1404	((WT)w)->at = mn_now + w->repeat;
1245	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1405	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1246	}	1406	}
1247	else	1407	else
1248	ev_timer_stop (EV_A_ w);	1408	ev_timer_stop (EV_A_ w);
1249	}	1409	}
1250	else if (w->repeat)	1410	else if (w->repeat)
		1411	{
		1412	w->at = w->repeat;
1251	ev_timer_start (EV_A_ w);	1413	ev_timer_start (EV_A_ w);
		1414	}
1252	}	1415	}
1253		1416
		1417	#if EV_PERIODICS
1254	void	1418	void
1255	ev_periodic_start (EV_P_ struct ev_periodic *w)	1419	ev_periodic_start (EV_P_ struct ev_periodic *w)
1256	{	1420	{
1257	if (ev_is_active (w))	1421	if (ev_is_active (w))
1258	return;	1422	return;
1259		1423
		1424	if (w->reschedule_cb)
		1425	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1426	else if (w->interval)
		1427	{
1260	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1428	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 */	1429	/* 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;	1430	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1431	}
1265		1432
1266	ev_start (EV_A_ (W)w, ++periodiccnt);	1433	ev_start (EV_A_ (W)w, ++periodiccnt);
1267	array_needsize (periodics, periodicmax, periodiccnt, );	1434	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1268	periodics [periodiccnt - 1] = w;	1435	periodics [periodiccnt - 1] = w;
1269	upheap ((WT *)periodics, periodiccnt - 1);	1436	upheap ((WT *)periodics, periodiccnt - 1);
1270		1437
1271	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1438	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1272	}	1439	}
…		…
1281	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1448	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1282		1449
1283	if (((W)w)->active < periodiccnt--)	1450	if (((W)w)->active < periodiccnt--)
1284	{	1451	{
1285	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1452	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1286	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1453	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1287	}	1454	}
1288		1455
1289	ev_stop (EV_A_ (W)w);	1456	ev_stop (EV_A_ (W)w);
1290	}	1457	}
1291		1458
1292	void	1459	void
		1460	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1461	{
		1462	/* TODO: use adjustheap and recalculation */
		1463	ev_periodic_stop (EV_A_ w);
		1464	ev_periodic_start (EV_A_ w);
		1465	}
		1466	#endif
		1467
		1468	void
1293	ev_idle_start (EV_P_ struct ev_idle *w)	1469	ev_idle_start (EV_P_ struct ev_idle *w)
1294	{	1470	{
1295	if (ev_is_active (w))	1471	if (ev_is_active (w))
1296	return;	1472	return;
1297		1473
1298	ev_start (EV_A_ (W)w, ++idlecnt);	1474	ev_start (EV_A_ (W)w, ++idlecnt);
1299	array_needsize (idles, idlemax, idlecnt, );	1475	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1300	idles [idlecnt - 1] = w;	1476	idles [idlecnt - 1] = w;
1301	}	1477	}
1302		1478
1303	void	1479	void
1304	ev_idle_stop (EV_P_ struct ev_idle *w)	1480	ev_idle_stop (EV_P_ struct ev_idle *w)
1305	{	1481	{
1306	ev_clear_pending (EV_A_ (W)w);	1482	ev_clear_pending (EV_A_ (W)w);
1307	if (ev_is_active (w))	1483	if (!ev_is_active (w))
1308	return;	1484	return;
1309		1485
1310	idles [((W)w)->active - 1] = idles [--idlecnt];	1486	idles [((W)w)->active - 1] = idles [--idlecnt];
1311	ev_stop (EV_A_ (W)w);	1487	ev_stop (EV_A_ (W)w);
1312	}	1488	}
…		…
1316	{	1492	{
1317	if (ev_is_active (w))	1493	if (ev_is_active (w))
1318	return;	1494	return;
1319		1495
1320	ev_start (EV_A_ (W)w, ++preparecnt);	1496	ev_start (EV_A_ (W)w, ++preparecnt);
1321	array_needsize (prepares, preparemax, preparecnt, );	1497	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1322	prepares [preparecnt - 1] = w;	1498	prepares [preparecnt - 1] = w;
1323	}	1499	}
1324		1500
1325	void	1501	void
1326	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1502	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1327	{	1503	{
1328	ev_clear_pending (EV_A_ (W)w);	1504	ev_clear_pending (EV_A_ (W)w);
1329	if (ev_is_active (w))	1505	if (!ev_is_active (w))
1330	return;	1506	return;
1331		1507
1332	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1508	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1333	ev_stop (EV_A_ (W)w);	1509	ev_stop (EV_A_ (W)w);
1334	}	1510	}
…		…
1338	{	1514	{
1339	if (ev_is_active (w))	1515	if (ev_is_active (w))
1340	return;	1516	return;
1341		1517
1342	ev_start (EV_A_ (W)w, ++checkcnt);	1518	ev_start (EV_A_ (W)w, ++checkcnt);
1343	array_needsize (checks, checkmax, checkcnt, );	1519	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1344	checks [checkcnt - 1] = w;	1520	checks [checkcnt - 1] = w;
1345	}	1521	}
1346		1522
1347	void	1523	void
1348	ev_check_stop (EV_P_ struct ev_check *w)	1524	ev_check_stop (EV_P_ struct ev_check *w)
1349	{	1525	{
1350	ev_clear_pending (EV_A_ (W)w);	1526	ev_clear_pending (EV_A_ (W)w);
1351	if (ev_is_active (w))	1527	if (!ev_is_active (w))
1352	return;	1528	return;
1353		1529
1354	checks [((W)w)->active - 1] = checks [--checkcnt];	1530	checks [((W)w)->active - 1] = checks [--checkcnt];
1355	ev_stop (EV_A_ (W)w);	1531	ev_stop (EV_A_ (W)w);
1356	}	1532	}
…		…
1361		1537
1362	void	1538	void
1363	ev_signal_start (EV_P_ struct ev_signal *w)	1539	ev_signal_start (EV_P_ struct ev_signal *w)
1364	{	1540	{
1365	#if EV_MULTIPLICITY	1541	#if EV_MULTIPLICITY
1366	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1542	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1367	#endif	1543	#endif
1368	if (ev_is_active (w))	1544	if (ev_is_active (w))
1369	return;	1545	return;
1370		1546
1371	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1547	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1372		1548
1373	ev_start (EV_A_ (W)w, 1);	1549	ev_start (EV_A_ (W)w, 1);
1374	array_needsize (signals, signalmax, w->signum, signals_init);	1550	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1375	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1551	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1376		1552
1377	if (!((WL)w)->next)	1553	if (!((WL)w)->next)
1378	{	1554	{
1379	#if WIN32	1555	#if _WIN32
1380	signal (w->signum, sighandler);	1556	signal (w->signum, sighandler);
1381	#else	1557	#else
1382	struct sigaction sa;	1558	struct sigaction sa;
1383	sa.sa_handler = sighandler;	1559	sa.sa_handler = sighandler;
1384	sigfillset (&sa.sa_mask);	1560	sigfillset (&sa.sa_mask);
…		…
1404		1580
1405	void	1581	void
1406	ev_child_start (EV_P_ struct ev_child *w)	1582	ev_child_start (EV_P_ struct ev_child *w)
1407	{	1583	{
1408	#if EV_MULTIPLICITY	1584	#if EV_MULTIPLICITY
1409	assert (("child watchers are only supported in the default loop", loop == default_loop));	1585	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1410	#endif	1586	#endif
1411	if (ev_is_active (w))	1587	if (ev_is_active (w))
1412	return;	1588	return;
1413		1589
1414	ev_start (EV_A_ (W)w, 1);	1590	ev_start (EV_A_ (W)w, 1);
…		…
1417		1593
1418	void	1594	void
1419	ev_child_stop (EV_P_ struct ev_child *w)	1595	ev_child_stop (EV_P_ struct ev_child *w)
1420	{	1596	{
1421	ev_clear_pending (EV_A_ (W)w);	1597	ev_clear_pending (EV_A_ (W)w);
1422	if (ev_is_active (w))	1598	if (!ev_is_active (w))
1423	return;	1599	return;
1424		1600
1425	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1601	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1426	ev_stop (EV_A_ (W)w);	1602	ev_stop (EV_A_ (W)w);
1427	}	1603	}
…		…
1462	}	1638	}
1463		1639
1464	void	1640	void
1465	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1641	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1466	{	1642	{
1467	struct ev_once *once = ev_malloc (sizeof (struct ev_once));	1643	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1468		1644
1469	if (!once)	1645	if (!once)
1470	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1646	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1471	else	1647	else
1472	{	1648	{
1473	once->cb = cb;	1649	once->cb = cb;
1474	once->arg = arg;	1650	once->arg = arg;
1475		1651
1476	ev_watcher_init (&once->io, once_cb_io);	1652	ev_init (&once->io, once_cb_io);
1477	if (fd >= 0)	1653	if (fd >= 0)
1478	{	1654	{
1479	ev_io_set (&once->io, fd, events);	1655	ev_io_set (&once->io, fd, events);
1480	ev_io_start (EV_A_ &once->io);	1656	ev_io_start (EV_A_ &once->io);
1481	}	1657	}
1482		1658
1483	ev_watcher_init (&once->to, once_cb_to);	1659	ev_init (&once->to, once_cb_to);
1484	if (timeout >= 0.)	1660	if (timeout >= 0.)
1485	{	1661	{
1486	ev_timer_set (&once->to, timeout, 0.);	1662	ev_timer_set (&once->to, timeout, 0.);
1487	ev_timer_start (EV_A_ &once->to);	1663	ev_timer_start (EV_A_ &once->to);
1488	}	1664	}
1489	}	1665	}
1490	}	1666	}
1491		1667
		1668	#ifdef __cplusplus
		1669	}
		1670	#endif
		1671

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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 1.119 by root, Fri Nov 16 01:43:52 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 1.119 by root, Fri Nov 16 01:43:52 2007 UTC