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

Comparing libev/ev.c (file contents):
Revision 1.65 by root, Sun Nov 4 23:29:48 2007 UTC vs.
Revision 1.117 by ayin, Thu Nov 15 17:15:56 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
		181	#ifdef _WIN32
		182	# include "ev_win32.c"
		183	#endif
		184
150	/*****************************************************************************/	185	/*****************************************************************************/
151		186
		187	static void (syserr_cb)(const char msg);
		188
		189	void ev_set_syserr_cb (void (cb)(const char msg))
		190	{
		191	syserr_cb = cb;
		192	}
		193
		194	static void
		195	syserr (const char *msg)
		196	{
		197	if (!msg)
		198	msg = "(libev) system error";
		199
		200	if (syserr_cb)
		201	syserr_cb (msg);
		202	else
		203	{
		204	perror (msg);
		205	abort ();
		206	}
		207	}
		208
		209	static void (alloc)(void *ptr, long size);
		210
		211	void ev_set_allocator (void (cb)(void *ptr, long size))
		212	{
		213	alloc = cb;
		214	}
		215
		216	static void *
		217	ev_realloc (void *ptr, long size)
		218	{
		219	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		220
		221	if (!ptr && size)
		222	{
		223	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		224	abort ();
		225	}
		226
		227	return ptr;
		228	}
		229
		230	#define ev_malloc(size) ev_realloc (0, (size))
		231	#define ev_free(ptr) ev_realloc ((ptr), 0)
		232
		233	/*****************************************************************************/
		234
152	typedef struct	235	typedef struct
153	{	236	{
154	struct ev_watcher_list *head;	237	WL head;
155	unsigned char events;	238	unsigned char events;
156	unsigned char reify;	239	unsigned char reify;
		240	#if EV_SELECT_IS_WINSOCKET
		241	SOCKET handle;
		242	#endif
157	} ANFD;	243	} ANFD;
158		244
159	typedef struct	245	typedef struct
160	{	246	{
161	W w;	247	W w;
162	int events;	248	int events;
163	} ANPENDING;	249	} ANPENDING;
164		250
165	#if EV_MULTIPLICITY	251	#if EV_MULTIPLICITY
166		252
167	struct ev_loop	253	struct ev_loop
168	{	254	{
		255	ev_tstamp ev_rt_now;
		256	#define ev_rt_now ((loop)->ev_rt_now)
169	# define VAR(name,decl) decl;	257	#define VAR(name,decl) decl;
170	# include "ev_vars.h"	258	#include "ev_vars.h"
171	};
172	# undef VAR	259	#undef VAR
		260	};
173	# include "ev_wrap.h"	261	#include "ev_wrap.h"
		262
		263	static struct ev_loop default_loop_struct;
		264	struct ev_loop *ev_default_loop_ptr;
174		265
175	#else	266	#else
176		267
		268	ev_tstamp ev_rt_now;
177	# define VAR(name,decl) static decl;	269	#define VAR(name,decl) static decl;
178	# include "ev_vars.h"	270	#include "ev_vars.h"
179	# undef VAR	271	#undef VAR
		272
		273	static int ev_default_loop_ptr;
180		274
181	#endif	275	#endif
182		276
183	/*****************************************************************************/	277	/*****************************************************************************/
184		278
185	inline ev_tstamp	279	ev_tstamp
186	ev_time (void)	280	ev_time (void)
187	{	281	{
188	#if EV_USE_REALTIME	282	#if EV_USE_REALTIME
189	struct timespec ts;	283	struct timespec ts;
190	clock_gettime (CLOCK_REALTIME, &ts);	284	clock_gettime (CLOCK_REALTIME, &ts);
…		…
209	#endif	303	#endif
210		304
211	return ev_time ();	305	return ev_time ();
212	}	306	}
213		307
		308	#if EV_MULTIPLICITY
214	ev_tstamp	309	ev_tstamp
215	ev_now (EV_P)	310	ev_now (EV_P)
216	{	311	{
217	return rt_now;	312	return ev_rt_now;
218	}	313	}
		314	#endif
219		315
220	#define array_roundsize(base,n) ((n) \| 4 & ~3)	316	#define array_roundsize(type,n) (((n) \| 4) & ~3)
221		317
222	#define array_needsize(base,cur,cnt,init) \	318	#define array_needsize(type,base,cur,cnt,init) \
223	if (expect_false ((cnt) > cur)) \	319	if (expect_false ((cnt) > cur)) \
224	{ \	320	{ \
225	int newcnt = cur; \	321	int newcnt = cur; \
226	do \	322	do \
227	{ \	323	{ \
228	newcnt = array_roundsize (base, newcnt << 1); \	324	newcnt = array_roundsize (type, newcnt << 1); \
229	} \	325	} \
230	while ((cnt) > newcnt); \	326	while ((cnt) > newcnt); \
231	\	327	\
232	base = realloc (base, sizeof (base) (newcnt)); \	328	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
233	init (base + cur, newcnt - cur); \	329	init (base + cur, newcnt - cur); \
234	cur = newcnt; \	330	cur = newcnt; \
		331	}
		332
		333	#define array_slim(type,stem) \
		334	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		335	{ \
		336	stem ## max = array_roundsize (stem ## cnt >> 1); \
		337	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		338	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
235	}	339	}
236		340
237	#define array_free(stem, idx) \	341	#define array_free(stem, idx) \
238	free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	342	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
239		343
240	/*****************************************************************************/	344	/*****************************************************************************/
241		345
242	static void	346	static void
243	anfds_init (ANFD *base, int count)	347	anfds_init (ANFD *base, int count)
…		…
250		354
251	++base;	355	++base;
252	}	356	}
253	}	357	}
254		358
255	static void	359	void
256	event (EV_P_ W w, int events)	360	ev_feed_event (EV_P_ void *w, int revents)
257	{	361	{
		362	W w_ = (W)w;
		363
258	if (w->pending)	364	if (w_->pending)
259	{	365	{
260	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	366	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
261	return;	367	return;
262	}	368	}
263		369
264	w->pending = ++pendingcnt [ABSPRI (w)];	370	w_->pending = ++pendingcnt [ABSPRI (w_)];
265	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);
266	pendings [ABSPRI (w)][w->pending - 1].w = w;	372	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
267	pendings [ABSPRI (w)][w->pending - 1].events = events;	373	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
268	}	374	}
269		375
270	static void	376	static void
271	queue_events (EV_P_ W *events, int eventcnt, int type)	377	queue_events (EV_P_ W *events, int eventcnt, int type)
272	{	378	{
273	int i;	379	int i;
274		380
275	for (i = 0; i < eventcnt; ++i)	381	for (i = 0; i < eventcnt; ++i)
276	event (EV_A_ events [i], type);	382	ev_feed_event (EV_A_ events [i], type);
277	}	383	}
278		384
279	static void	385	inline void
280	fd_event (EV_P_ int fd, int events)	386	fd_event (EV_P_ int fd, int revents)
281	{	387	{
282	ANFD *anfd = anfds + fd;	388	ANFD *anfd = anfds + fd;
283	struct ev_io *w;	389	struct ev_io *w;
284		390
285	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)
286	{	392	{
287	int ev = w->events & events;	393	int ev = w->events & revents;
288		394
289	if (ev)	395	if (ev)
290	event (EV_A_ (W)w, ev);	396	ev_feed_event (EV_A_ (W)w, ev);
291	}	397	}
		398	}
		399
		400	void
		401	ev_feed_fd_event (EV_P_ int fd, int revents)
		402	{
		403	fd_event (EV_A_ fd, revents);
292	}	404	}
293		405
294	/*****************************************************************************/	406	/*****************************************************************************/
295		407
296	static void	408	static void
…		…
307	int events = 0;	419	int events = 0;
308		420
309	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)
310	events \|= w->events;	422	events \|= w->events;
311		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
312	anfd->reify = 0;	433	anfd->reify = 0;
313		434
314	method_modify (EV_A_ fd, anfd->events, events);	435	method_modify (EV_A_ fd, anfd->events, events);
315	anfd->events = events;	436	anfd->events = events;
316	}	437	}
…		…
319	}	440	}
320		441
321	static void	442	static void
322	fd_change (EV_P_ int fd)	443	fd_change (EV_P_ int fd)
323	{	444	{
324	if (anfds [fd].reify \|\| fdchangecnt < 0)	445	if (anfds [fd].reify)
325	return;	446	return;
326		447
327	anfds [fd].reify = 1;	448	anfds [fd].reify = 1;
328		449
329	++fdchangecnt;	450	++fdchangecnt;
330	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	451	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
331	fdchanges [fdchangecnt - 1] = fd;	452	fdchanges [fdchangecnt - 1] = fd;
332	}	453	}
333		454
334	static void	455	static void
335	fd_kill (EV_P_ int fd)	456	fd_kill (EV_P_ int fd)
…		…
337	struct ev_io *w;	458	struct ev_io *w;
338		459
339	while ((w = (struct ev_io *)anfds [fd].head))	460	while ((w = (struct ev_io *)anfds [fd].head))
340	{	461	{
341	ev_io_stop (EV_A_ w);	462	ev_io_stop (EV_A_ w);
342	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);
343	}	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
344	}	475	}
345		476
346	/* called on EBADF to verify fds */	477	/* called on EBADF to verify fds */
347	static void	478	static void
348	fd_ebadf (EV_P)	479	fd_ebadf (EV_P)
349	{	480	{
350	int fd;	481	int fd;
351		482
352	for (fd = 0; fd < anfdmax; ++fd)	483	for (fd = 0; fd < anfdmax; ++fd)
353	if (anfds [fd].events)	484	if (anfds [fd].events)
354	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	485	if (!fd_valid (fd) == -1 && errno == EBADF)
355	fd_kill (EV_A_ fd);	486	fd_kill (EV_A_ fd);
356	}	487	}
357		488
358	/* 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 */
359	static void	490	static void
…		…
362	int fd;	493	int fd;
363		494
364	for (fd = anfdmax; fd--; )	495	for (fd = anfdmax; fd--; )
365	if (anfds [fd].events)	496	if (anfds [fd].events)
366	{	497	{
367	close (fd);
368	fd_kill (EV_A_ fd);	498	fd_kill (EV_A_ fd);
369	return;	499	return;
370	}	500	}
371	}	501	}
372		502
373	/* 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 */
374	static void	504	static void
375	fd_rearm_all (EV_P)	505	fd_rearm_all (EV_P)
376	{	506	{
377	int fd;	507	int fd;
378		508
…		…
426		556
427	heap [k] = w;	557	heap [k] = w;
428	((W)heap [k])->active = k + 1;	558	((W)heap [k])->active = k + 1;
429	}	559	}
430		560
		561	inline void
		562	adjustheap (WT *heap, int N, int k)
		563	{
		564	upheap (heap, k);
		565	downheap (heap, N, k);
		566	}
		567
431	/*****************************************************************************/	568	/*****************************************************************************/
432		569
433	typedef struct	570	typedef struct
434	{	571	{
435	struct ev_watcher_list *head;	572	WL head;
436	sig_atomic_t volatile gotsig;	573	sig_atomic_t volatile gotsig;
437	} ANSIG;	574	} ANSIG;
438		575
439	static ANSIG *signals;	576	static ANSIG *signals;
440	static int signalmax;	577	static int signalmax;
…		…
456	}	593	}
457		594
458	static void	595	static void
459	sighandler (int signum)	596	sighandler (int signum)
460	{	597	{
		598	#if _WIN32
		599	signal (signum, sighandler);
		600	#endif
		601
461	signals [signum - 1].gotsig = 1;	602	signals [signum - 1].gotsig = 1;
462		603
463	if (!gotsig)	604	if (!gotsig)
464	{	605	{
465	int old_errno = errno;	606	int old_errno = errno;
…		…
467	write (sigpipe [1], &signum, 1);	608	write (sigpipe [1], &signum, 1);
468	errno = old_errno;	609	errno = old_errno;
469	}	610	}
470	}	611	}
471		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 == ev_default_loop_ptr));
		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
472	static void	633	static void
473	sigcb (EV_P_ struct ev_io *iow, int revents)	634	sigcb (EV_P_ struct ev_io *iow, int revents)
474	{	635	{
475	struct ev_watcher_list *w;
476	int signum;	636	int signum;
477		637
478	read (sigpipe [0], &revents, 1);	638	read (sigpipe [0], &revents, 1);
479	gotsig = 0;	639	gotsig = 0;
480		640
481	for (signum = signalmax; signum--; )	641	for (signum = signalmax; signum--; )
482	if (signals [signum].gotsig)	642	if (signals [signum].gotsig)
483	{	643	ev_feed_signal_event (EV_A_ signum + 1);
484	signals [signum].gotsig = 0;	644	}
485		645
486	for (w = signals [signum].head; w; w = w->next)	646	inline void
487	event (EV_A_ (W)w, EV_SIGNAL);	647	fd_intern (int fd)
488	}	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
489	}	656	}
490		657
491	static void	658	static void
492	siginit (EV_P)	659	siginit (EV_P)
493	{	660	{
494	#ifndef WIN32	661	fd_intern (sigpipe [0]);
495	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	662	fd_intern (sigpipe [1]);
496	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
497
498	/* rather than sort out wether we really need nb, set it */
499	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
500	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
501	#endif
502		663
503	ev_io_set (&sigev, sigpipe [0], EV_READ);	664	ev_io_set (&sigev, sigpipe [0], EV_READ);
504	ev_io_start (EV_A_ &sigev);	665	ev_io_start (EV_A_ &sigev);
505	ev_unref (EV_A); /* child watcher should not keep loop alive */	666	ev_unref (EV_A); /* child watcher should not keep loop alive */
506	}	667	}
507		668
508	/*****************************************************************************/	669	/*****************************************************************************/
509		670
510	#ifndef WIN32
511
512	static struct ev_child *childs [PID_HASHSIZE];	671	static struct ev_child *childs [PID_HASHSIZE];
		672
		673	#ifndef _WIN32
		674
513	static struct ev_signal childev;	675	static struct ev_signal childev;
514		676
515	#ifndef WCONTINUED	677	#ifndef WCONTINUED
516	# define WCONTINUED 0	678	# define WCONTINUED 0
517	#endif	679	#endif
…		…
525	if (w->pid == pid \|\| !w->pid)	687	if (w->pid == pid \|\| !w->pid)
526	{	688	{
527	ev_priority (w) = ev_priority (sw); /* need to do it now */	689	ev_priority (w) = ev_priority (sw); /* need to do it now */
528	w->rpid = pid;	690	w->rpid = pid;
529	w->rstatus = status;	691	w->rstatus = status;
530	event (EV_A_ (W)w, EV_CHILD);	692	ev_feed_event (EV_A_ (W)w, EV_CHILD);
531	}	693	}
532	}	694	}
533		695
534	static void	696	static void
535	childcb (EV_P_ struct ev_signal *sw, int revents)	697	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
537	int pid, status;	699	int pid, status;
538		700
539	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	701	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
540	{	702	{
541	/* 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 */
542	event (EV_A_ (W)sw, EV_SIGNAL);	704	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
543		705
544	child_reap (EV_A_ sw, pid, pid, status);	706	child_reap (EV_A_ sw, pid, pid, status);
545	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 */
546	}	708	}
547	}	709	}
…		…
577		739
578	/* 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 */
579	static int	741	static int
580	enable_secure (void)	742	enable_secure (void)
581	{	743	{
582	#ifdef WIN32	744	#ifdef _WIN32
583	return 0;	745	return 0;
584	#else	746	#else
585	return getuid () != geteuid ()	747	return getuid () != geteuid ()
586	\|\| getgid () != getegid ();	748	\|\| getgid () != getegid ();
587	#endif	749	#endif
588	}	750	}
589		751
590	int	752	unsigned int
591	ev_method (EV_P)	753	ev_method (EV_P)
592	{	754	{
593	return method;	755	return method;
594	}	756	}
595		757
596	static void	758	static void
597	loop_init (EV_P_ int methods)	759	loop_init (EV_P_ unsigned int flags)
598	{	760	{
599	if (!method)	761	if (!method)
600	{	762	{
601	#if EV_USE_MONOTONIC	763	#if EV_USE_MONOTONIC
602	{	764	{
…		…
604	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	766	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
605	have_monotonic = 1;	767	have_monotonic = 1;
606	}	768	}
607	#endif	769	#endif
608		770
609	rt_now = ev_time ();	771	ev_rt_now = ev_time ();
610	mn_now = get_clock ();	772	mn_now = get_clock ();
611	now_floor = mn_now;	773	now_floor = mn_now;
612	rtmn_diff = rt_now - mn_now;	774	rtmn_diff = ev_rt_now - mn_now;
613		775
614	if (methods == EVMETHOD_AUTO)	776	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
615	if (!enable_secure () && getenv ("LIBEV_METHODS"))
616	methods = atoi (getenv ("LIBEV_METHODS"));	777	flags = atoi (getenv ("LIBEV_FLAGS"));
617	else	778
618	methods = EVMETHOD_ANY;	779	if (!(flags & 0x0000ffff))
		780	flags \|= 0x0000ffff;
619		781
620	method = 0;	782	method = 0;
621	#if EV_USE_WIN32
622	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
623	#endif
624	#if EV_USE_KQUEUE	783	#if EV_USE_KQUEUE
625	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	784	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
626	#endif	785	#endif
627	#if EV_USE_EPOLL	786	#if EV_USE_EPOLL
628	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	787	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
629	#endif	788	#endif
630	#if EV_USE_POLL	789	#if EV_USE_POLL
631	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	790	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
632	#endif	791	#endif
633	#if EV_USE_SELECT	792	#if EV_USE_SELECT
634	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	793	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
635	#endif	794	#endif
		795
		796	ev_init (&sigev, sigcb);
		797	ev_set_priority (&sigev, EV_MAXPRI);
636	}	798	}
637	}	799	}
638		800
639	void	801	void
640	loop_destroy (EV_P)	802	loop_destroy (EV_P)
641	{	803	{
642	int i;	804	int i;
643		805
644	#if EV_USE_WIN32
645	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
646	#endif
647	#if EV_USE_KQUEUE	806	#if EV_USE_KQUEUE
648	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	807	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
649	#endif	808	#endif
650	#if EV_USE_EPOLL	809	#if EV_USE_EPOLL
651	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	810	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
…		…
658	#endif	817	#endif
659		818
660	for (i = NUMPRI; i--; )	819	for (i = NUMPRI; i--; )
661	array_free (pending, [i]);	820	array_free (pending, [i]);
662		821
		822	/* have to use the microsoft-never-gets-it-right macro */
663	array_free (fdchange, );	823	array_free (fdchange, EMPTY0);
664	array_free (timer, );	824	array_free (timer, EMPTY0);
		825	#if EV_PERIODICS
665	array_free (periodic, );	826	array_free (periodic, EMPTY0);
		827	#endif
666	array_free (idle, );	828	array_free (idle, EMPTY0);
667	array_free (prepare, );	829	array_free (prepare, EMPTY0);
668	array_free (check, );	830	array_free (check, EMPTY0);
669		831
670	method = 0;	832	method = 0;
671	/TODO/
672	}	833	}
673		834
674	void	835	static void
675	loop_fork (EV_P)	836	loop_fork (EV_P)
676	{	837	{
677	/TODO/
678	#if EV_USE_EPOLL	838	#if EV_USE_EPOLL
679	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	839	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
680	#endif	840	#endif
681	#if EV_USE_KQUEUE	841	#if EV_USE_KQUEUE
682	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	842	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
683	#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;
684	}	861	}
685		862
686	#if EV_MULTIPLICITY	863	#if EV_MULTIPLICITY
687	struct ev_loop *	864	struct ev_loop *
688	ev_loop_new (int methods)	865	ev_loop_new (unsigned int flags)
689	{	866	{
690	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));	867	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
691		868
		869	memset (loop, 0, sizeof (struct ev_loop));
		870
692	loop_init (EV_A_ methods);	871	loop_init (EV_A_ flags);
693		872
694	if (ev_method (EV_A))	873	if (ev_method (EV_A))
695	return loop;	874	return loop;
696		875
697	return 0;	876	return 0;
…		…
699		878
700	void	879	void
701	ev_loop_destroy (EV_P)	880	ev_loop_destroy (EV_P)
702	{	881	{
703	loop_destroy (EV_A);	882	loop_destroy (EV_A);
704	free (loop);	883	ev_free (loop);
705	}	884	}
706		885
707	void	886	void
708	ev_loop_fork (EV_P)	887	ev_loop_fork (EV_P)
709	{	888	{
710	loop_fork (EV_A);	889	postfork = 1;
711	}	890	}
712		891
713	#endif	892	#endif
714		893
715	#if EV_MULTIPLICITY	894	#if EV_MULTIPLICITY
716	struct ev_loop default_loop_struct;
717	static struct ev_loop *default_loop;
718
719	struct ev_loop *	895	struct ev_loop *
		896	ev_default_loop_ (unsigned int flags)
720	#else	897	#else
721	static int default_loop;
722
723	int	898	int
		899	ev_default_loop (unsigned int flags)
724	#endif	900	#endif
725	ev_default_loop (int methods)
726	{	901	{
727	if (sigpipe [0] == sigpipe [1])	902	if (sigpipe [0] == sigpipe [1])
728	if (pipe (sigpipe))	903	if (pipe (sigpipe))
729	return 0;	904	return 0;
730		905
731	if (!default_loop)	906	if (!ev_default_loop_ptr)
732	{	907	{
733	#if EV_MULTIPLICITY	908	#if EV_MULTIPLICITY
734	struct ev_loop *loop = default_loop = &default_loop_struct;	909	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
735	#else	910	#else
736	default_loop = 1;	911	ev_default_loop_ptr = 1;
737	#endif	912	#endif
738		913
739	loop_init (EV_A_ methods);	914	loop_init (EV_A_ flags);
740		915
741	if (ev_method (EV_A))	916	if (ev_method (EV_A))
742	{	917	{
743	ev_watcher_init (&sigev, sigcb);
744	ev_set_priority (&sigev, EV_MAXPRI);
745	siginit (EV_A);	918	siginit (EV_A);
746		919
747	#ifndef WIN32	920	#ifndef _WIN32
748	ev_signal_init (&childev, childcb, SIGCHLD);	921	ev_signal_init (&childev, childcb, SIGCHLD);
749	ev_set_priority (&childev, EV_MAXPRI);	922	ev_set_priority (&childev, EV_MAXPRI);
750	ev_signal_start (EV_A_ &childev);	923	ev_signal_start (EV_A_ &childev);
751	ev_unref (EV_A); /* child watcher should not keep loop alive */	924	ev_unref (EV_A); /* child watcher should not keep loop alive */
752	#endif	925	#endif
753	}	926	}
754	else	927	else
755	default_loop = 0;	928	ev_default_loop_ptr = 0;
756	}	929	}
757		930
758	return default_loop;	931	return ev_default_loop_ptr;
759	}	932	}
760		933
761	void	934	void
762	ev_default_destroy (void)	935	ev_default_destroy (void)
763	{	936	{
764	#if EV_MULTIPLICITY	937	#if EV_MULTIPLICITY
765	struct ev_loop *loop = default_loop;	938	struct ev_loop *loop = ev_default_loop_ptr;
766	#endif	939	#endif
767		940
		941	#ifndef _WIN32
768	ev_ref (EV_A); /* child watcher */	942	ev_ref (EV_A); /* child watcher */
769	ev_signal_stop (EV_A_ &childev);	943	ev_signal_stop (EV_A_ &childev);
		944	#endif
770		945
771	ev_ref (EV_A); /* signal watcher */	946	ev_ref (EV_A); /* signal watcher */
772	ev_io_stop (EV_A_ &sigev);	947	ev_io_stop (EV_A_ &sigev);
773		948
774	close (sigpipe [0]); sigpipe [0] = 0;	949	close (sigpipe [0]); sigpipe [0] = 0;
…		…
779		954
780	void	955	void
781	ev_default_fork (void)	956	ev_default_fork (void)
782	{	957	{
783	#if EV_MULTIPLICITY	958	#if EV_MULTIPLICITY
784	struct ev_loop *loop = default_loop;	959	struct ev_loop *loop = ev_default_loop_ptr;
785	#endif	960	#endif
786		961
787	loop_fork (EV_A);	962	if (method)
788		963	postfork = 1;
789	ev_io_stop (EV_A_ &sigev);
790	close (sigpipe [0]);
791	close (sigpipe [1]);
792	pipe (sigpipe);
793
794	ev_ref (EV_A); /* signal watcher */
795	siginit (EV_A);
796	}	964	}
797		965
798	/*****************************************************************************/	966	/*****************************************************************************/
		967
		968	static int
		969	any_pending (EV_P)
		970	{
		971	int pri;
		972
		973	for (pri = NUMPRI; pri--; )
		974	if (pendingcnt [pri])
		975	return 1;
		976
		977	return 0;
		978	}
799		979
800	static void	980	static void
801	call_pending (EV_P)	981	call_pending (EV_P)
802	{	982	{
803	int pri;	983	int pri;
…		…
808	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	988	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
809		989
810	if (p->w)	990	if (p->w)
811	{	991	{
812	p->w->pending = 0;	992	p->w->pending = 0;
813		993	EV_CB_INVOKE (p->w, p->events);
814	((void (*)(EV_P_ W, int))p->w->cb) (EV_A_ p->w, p->events);
815	}	994	}
816	}	995	}
817	}	996	}
818		997
819	static void	998	static void
…		…
827		1006
828	/* first reschedule or stop timer */	1007	/* first reschedule or stop timer */
829	if (w->repeat)	1008	if (w->repeat)
830	{	1009	{
831	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1010	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1011
832	((WT)w)->at = mn_now + w->repeat;	1012	((WT)w)->at += w->repeat;
		1013	if (((WT)w)->at < mn_now)
		1014	((WT)w)->at = mn_now;
		1015
833	downheap ((WT *)timers, timercnt, 0);	1016	downheap ((WT *)timers, timercnt, 0);
834	}	1017	}
835	else	1018	else
836	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1019	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
837		1020
838	event (EV_A_ (W)w, EV_TIMEOUT);	1021	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
839	}	1022	}
840	}	1023	}
841		1024
		1025	#if EV_PERIODICS
842	static void	1026	static void
843	periodics_reify (EV_P)	1027	periodics_reify (EV_P)
844	{	1028	{
845	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1029	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
846	{	1030	{
847	struct ev_periodic *w = periodics [0];	1031	struct ev_periodic *w = periodics [0];
848		1032
849	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1033	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
850		1034
851	/* first reschedule or stop timer */	1035	/* first reschedule or stop timer */
852	if (w->interval)	1036	if (w->reschedule_cb)
853	{	1037	{
		1038	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1039	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1040	downheap ((WT *)periodics, periodiccnt, 0);
		1041	}
		1042	else if (w->interval)
		1043	{
854	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1044	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
855	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1045	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
856	downheap ((WT *)periodics, periodiccnt, 0);	1046	downheap ((WT *)periodics, periodiccnt, 0);
857	}	1047	}
858	else	1048	else
859	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1049	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
860		1050
861	event (EV_A_ (W)w, EV_PERIODIC);	1051	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
862	}	1052	}
863	}	1053	}
864		1054
865	static void	1055	static void
866	periodics_reschedule (EV_P)	1056	periodics_reschedule (EV_P)
…		…
870	/* adjust periodics after time jump */	1060	/* adjust periodics after time jump */
871	for (i = 0; i < periodiccnt; ++i)	1061	for (i = 0; i < periodiccnt; ++i)
872	{	1062	{
873	struct ev_periodic *w = periodics [i];	1063	struct ev_periodic *w = periodics [i];
874		1064
		1065	if (w->reschedule_cb)
		1066	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
875	if (w->interval)	1067	else if (w->interval)
876	{
877	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1068	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
878
879	if (fabs (diff) >= 1e-4)
880	{
881	ev_periodic_stop (EV_A_ w);
882	ev_periodic_start (EV_A_ w);
883
884	i = 0; /* restart loop, inefficient, but time jumps should be rare */
885	}
886	}
887	}	1069	}
		1070
		1071	/* now rebuild the heap */
		1072	for (i = periodiccnt >> 1; i--; )
		1073	downheap ((WT *)periodics, periodiccnt, i);
888	}	1074	}
		1075	#endif
889		1076
890	inline int	1077	inline int
891	time_update_monotonic (EV_P)	1078	time_update_monotonic (EV_P)
892	{	1079	{
893	mn_now = get_clock ();	1080	mn_now = get_clock ();
894		1081
895	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1082	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
896	{	1083	{
897	rt_now = rtmn_diff + mn_now;	1084	ev_rt_now = rtmn_diff + mn_now;
898	return 0;	1085	return 0;
899	}	1086	}
900	else	1087	else
901	{	1088	{
902	now_floor = mn_now;	1089	now_floor = mn_now;
903	rt_now = ev_time ();	1090	ev_rt_now = ev_time ();
904	return 1;	1091	return 1;
905	}	1092	}
906	}	1093	}
907		1094
908	static void	1095	static void
…		…
917	{	1104	{
918	ev_tstamp odiff = rtmn_diff;	1105	ev_tstamp odiff = rtmn_diff;
919		1106
920	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1107	for (i = 4; --i; ) /* loop a few times, before making important decisions */
921	{	1108	{
922	rtmn_diff = rt_now - mn_now;	1109	rtmn_diff = ev_rt_now - mn_now;
923		1110
924	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1111	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
925	return; /* all is well */	1112	return; /* all is well */
926		1113
927	rt_now = ev_time ();	1114	ev_rt_now = ev_time ();
928	mn_now = get_clock ();	1115	mn_now = get_clock ();
929	now_floor = mn_now;	1116	now_floor = mn_now;
930	}	1117	}
931		1118
		1119	# if EV_PERIODICS
932	periodics_reschedule (EV_A);	1120	periodics_reschedule (EV_A);
		1121	# endif
933	/* no timer adjustment, as the monotonic clock doesn't jump */	1122	/* no timer adjustment, as the monotonic clock doesn't jump */
934	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1123	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
935	}	1124	}
936	}	1125	}
937	else	1126	else
938	#endif	1127	#endif
939	{	1128	{
940	rt_now = ev_time ();	1129	ev_rt_now = ev_time ();
941		1130
942	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1131	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
943	{	1132	{
		1133	#if EV_PERIODICS
944	periodics_reschedule (EV_A);	1134	periodics_reschedule (EV_A);
		1135	#endif
945		1136
946	/* adjust timers. this is easy, as the offset is the same for all */	1137	/* adjust timers. this is easy, as the offset is the same for all */
947	for (i = 0; i < timercnt; ++i)	1138	for (i = 0; i < timercnt; ++i)
948	((WT)timers [i])->at += rt_now - mn_now;	1139	((WT)timers [i])->at += ev_rt_now - mn_now;
949	}	1140	}
950		1141
951	mn_now = rt_now;	1142	mn_now = ev_rt_now;
952	}	1143	}
953	}	1144	}
954		1145
955	void	1146	void
956	ev_ref (EV_P)	1147	ev_ref (EV_P)
…		…
970	ev_loop (EV_P_ int flags)	1161	ev_loop (EV_P_ int flags)
971	{	1162	{
972	double block;	1163	double block;
973	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1164	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
974		1165
975	do	1166	while (activecnt)
976	{	1167	{
977	/* queue check watchers (and execute them) */	1168	/* queue check watchers (and execute them) */
978	if (expect_false (preparecnt))	1169	if (expect_false (preparecnt))
979	{	1170	{
980	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1171	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
981	call_pending (EV_A);	1172	call_pending (EV_A);
982	}	1173	}
983		1174
		1175	/* we might have forked, so reify kernel state if necessary */
		1176	if (expect_false (postfork))
		1177	loop_fork (EV_A);
		1178
984	/* update fd-related kernel structures */	1179	/* update fd-related kernel structures */
985	fd_reify (EV_A);	1180	fd_reify (EV_A);
986		1181
987	/* calculate blocking time */	1182	/* calculate blocking time */
988		1183
989	/* we only need this for !monotonic clockor timers, but as we basically	1184	/* we only need this for !monotonic clock or timers, but as we basically
990	always have timers, we just calculate it always */	1185	always have timers, we just calculate it always */
991	#if EV_USE_MONOTONIC	1186	#if EV_USE_MONOTONIC
992	if (expect_true (have_monotonic))	1187	if (expect_true (have_monotonic))
993	time_update_monotonic (EV_A);	1188	time_update_monotonic (EV_A);
994	else	1189	else
995	#endif	1190	#endif
996	{	1191	{
997	rt_now = ev_time ();	1192	ev_rt_now = ev_time ();
998	mn_now = rt_now;	1193	mn_now = ev_rt_now;
999	}	1194	}
1000		1195
1001	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1196	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1002	block = 0.;	1197	block = 0.;
1003	else	1198	else
…		…
1008	{	1203	{
1009	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1204	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
1010	if (block > to) block = to;	1205	if (block > to) block = to;
1011	}	1206	}
1012		1207
		1208	#if EV_PERIODICS
1013	if (periodiccnt)	1209	if (periodiccnt)
1014	{	1210	{
1015	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1211	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
1016	if (block > to) block = to;	1212	if (block > to) block = to;
1017	}	1213	}
		1214	#endif
1018		1215
1019	if (block < 0.) block = 0.;	1216	if (block < 0.) block = 0.;
1020	}	1217	}
1021		1218
1022	method_poll (EV_A_ block);	1219	method_poll (EV_A_ block);
1023		1220
1024	/* update rt_now, do magic */	1221	/* update ev_rt_now, do magic */
1025	time_update (EV_A);	1222	time_update (EV_A);
1026		1223
1027	/* queue pending timers and reschedule them */	1224	/* queue pending timers and reschedule them */
1028	timers_reify (EV_A); /* relative timers called last */	1225	timers_reify (EV_A); /* relative timers called last */
		1226	#if EV_PERIODICS
1029	periodics_reify (EV_A); /* absolute timers called first */	1227	periodics_reify (EV_A); /* absolute timers called first */
		1228	#endif
1030		1229
1031	/* queue idle watchers unless io or timers are pending */	1230	/* queue idle watchers unless io or timers are pending */
1032	if (!pendingcnt)	1231	if (idlecnt && !any_pending (EV_A))
1033	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1232	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1034		1233
1035	/* queue check watchers, to be executed first */	1234	/* queue check watchers, to be executed first */
1036	if (checkcnt)	1235	if (checkcnt)
1037	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1236	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1038		1237
1039	call_pending (EV_A);	1238	call_pending (EV_A);
		1239
		1240	if (loop_done)
		1241	break;
1040	}	1242	}
1041	while (activecnt && !loop_done);
1042		1243
1043	if (loop_done != 2)	1244	if (loop_done != 2)
1044	loop_done = 0;	1245	loop_done = 0;
1045	}	1246	}
1046		1247
…		…
1112	return;	1313	return;
1113		1314
1114	assert (("ev_io_start called with negative fd", fd >= 0));	1315	assert (("ev_io_start called with negative fd", fd >= 0));
1115		1316
1116	ev_start (EV_A_ (W)w, 1);	1317	ev_start (EV_A_ (W)w, 1);
1117	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1318	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1118	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1319	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1119		1320
1120	fd_change (EV_A_ fd);	1321	fd_change (EV_A_ fd);
1121	}	1322	}
1122		1323
…		…
1125	{	1326	{
1126	ev_clear_pending (EV_A_ (W)w);	1327	ev_clear_pending (EV_A_ (W)w);
1127	if (!ev_is_active (w))	1328	if (!ev_is_active (w))
1128	return;	1329	return;
1129		1330
		1331	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1332
1130	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1333	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1131	ev_stop (EV_A_ (W)w);	1334	ev_stop (EV_A_ (W)w);
1132		1335
1133	fd_change (EV_A_ w->fd);	1336	fd_change (EV_A_ w->fd);
1134	}	1337	}
…		…
1142	((WT)w)->at += mn_now;	1345	((WT)w)->at += mn_now;
1143		1346
1144	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1347	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1145		1348
1146	ev_start (EV_A_ (W)w, ++timercnt);	1349	ev_start (EV_A_ (W)w, ++timercnt);
1147	array_needsize (timers, timermax, timercnt, );	1350	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1148	timers [timercnt - 1] = w;	1351	timers [timercnt - 1] = w;
1149	upheap ((WT *)timers, timercnt - 1);	1352	upheap ((WT *)timers, timercnt - 1);
1150		1353
1151	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1354	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1152	}	1355	}
…		…
1161	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1364	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1162		1365
1163	if (((W)w)->active < timercnt--)	1366	if (((W)w)->active < timercnt--)
1164	{	1367	{
1165	timers [((W)w)->active - 1] = timers [timercnt];	1368	timers [((W)w)->active - 1] = timers [timercnt];
1166	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1369	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1167	}	1370	}
1168		1371
1169	((WT)w)->at = w->repeat;	1372	((WT)w)->at -= mn_now;
1170		1373
1171	ev_stop (EV_A_ (W)w);	1374	ev_stop (EV_A_ (W)w);
1172	}	1375	}
1173		1376
1174	void	1377	void
…		…
1177	if (ev_is_active (w))	1380	if (ev_is_active (w))
1178	{	1381	{
1179	if (w->repeat)	1382	if (w->repeat)
1180	{	1383	{
1181	((WT)w)->at = mn_now + w->repeat;	1384	((WT)w)->at = mn_now + w->repeat;
1182	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1385	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1183	}	1386	}
1184	else	1387	else
1185	ev_timer_stop (EV_A_ w);	1388	ev_timer_stop (EV_A_ w);
1186	}	1389	}
1187	else if (w->repeat)	1390	else if (w->repeat)
		1391	{
		1392	w->at = w->repeat;
1188	ev_timer_start (EV_A_ w);	1393	ev_timer_start (EV_A_ w);
		1394	}
1189	}	1395	}
1190		1396
		1397	#if EV_PERIODICS
1191	void	1398	void
1192	ev_periodic_start (EV_P_ struct ev_periodic *w)	1399	ev_periodic_start (EV_P_ struct ev_periodic *w)
1193	{	1400	{
1194	if (ev_is_active (w))	1401	if (ev_is_active (w))
1195	return;	1402	return;
1196		1403
		1404	if (w->reschedule_cb)
		1405	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1406	else if (w->interval)
		1407	{
1197	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1408	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1198
1199	/* this formula differs from the one in periodic_reify because we do not always round up */	1409	/* this formula differs from the one in periodic_reify because we do not always round up */
1200	if (w->interval)
1201	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1410	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1411	}
1202		1412
1203	ev_start (EV_A_ (W)w, ++periodiccnt);	1413	ev_start (EV_A_ (W)w, ++periodiccnt);
1204	array_needsize (periodics, periodicmax, periodiccnt, );	1414	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1205	periodics [periodiccnt - 1] = w;	1415	periodics [periodiccnt - 1] = w;
1206	upheap ((WT *)periodics, periodiccnt - 1);	1416	upheap ((WT *)periodics, periodiccnt - 1);
1207		1417
1208	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1418	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1209	}	1419	}
…		…
1218	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1428	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1219		1429
1220	if (((W)w)->active < periodiccnt--)	1430	if (((W)w)->active < periodiccnt--)
1221	{	1431	{
1222	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1432	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1223	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1433	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1224	}	1434	}
1225		1435
1226	ev_stop (EV_A_ (W)w);	1436	ev_stop (EV_A_ (W)w);
1227	}	1437	}
1228		1438
1229	void	1439	void
		1440	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1441	{
		1442	/* TODO: use adjustheap and recalculation */
		1443	ev_periodic_stop (EV_A_ w);
		1444	ev_periodic_start (EV_A_ w);
		1445	}
		1446	#endif
		1447
		1448	void
1230	ev_idle_start (EV_P_ struct ev_idle *w)	1449	ev_idle_start (EV_P_ struct ev_idle *w)
1231	{	1450	{
1232	if (ev_is_active (w))	1451	if (ev_is_active (w))
1233	return;	1452	return;
1234		1453
1235	ev_start (EV_A_ (W)w, ++idlecnt);	1454	ev_start (EV_A_ (W)w, ++idlecnt);
1236	array_needsize (idles, idlemax, idlecnt, );	1455	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1237	idles [idlecnt - 1] = w;	1456	idles [idlecnt - 1] = w;
1238	}	1457	}
1239		1458
1240	void	1459	void
1241	ev_idle_stop (EV_P_ struct ev_idle *w)	1460	ev_idle_stop (EV_P_ struct ev_idle *w)
1242	{	1461	{
1243	ev_clear_pending (EV_A_ (W)w);	1462	ev_clear_pending (EV_A_ (W)w);
1244	if (ev_is_active (w))	1463	if (!ev_is_active (w))
1245	return;	1464	return;
1246		1465
1247	idles [((W)w)->active - 1] = idles [--idlecnt];	1466	idles [((W)w)->active - 1] = idles [--idlecnt];
1248	ev_stop (EV_A_ (W)w);	1467	ev_stop (EV_A_ (W)w);
1249	}	1468	}
…		…
1253	{	1472	{
1254	if (ev_is_active (w))	1473	if (ev_is_active (w))
1255	return;	1474	return;
1256		1475
1257	ev_start (EV_A_ (W)w, ++preparecnt);	1476	ev_start (EV_A_ (W)w, ++preparecnt);
1258	array_needsize (prepares, preparemax, preparecnt, );	1477	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1259	prepares [preparecnt - 1] = w;	1478	prepares [preparecnt - 1] = w;
1260	}	1479	}
1261		1480
1262	void	1481	void
1263	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1482	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1264	{	1483	{
1265	ev_clear_pending (EV_A_ (W)w);	1484	ev_clear_pending (EV_A_ (W)w);
1266	if (ev_is_active (w))	1485	if (!ev_is_active (w))
1267	return;	1486	return;
1268		1487
1269	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1488	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1270	ev_stop (EV_A_ (W)w);	1489	ev_stop (EV_A_ (W)w);
1271	}	1490	}
…		…
1275	{	1494	{
1276	if (ev_is_active (w))	1495	if (ev_is_active (w))
1277	return;	1496	return;
1278		1497
1279	ev_start (EV_A_ (W)w, ++checkcnt);	1498	ev_start (EV_A_ (W)w, ++checkcnt);
1280	array_needsize (checks, checkmax, checkcnt, );	1499	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1281	checks [checkcnt - 1] = w;	1500	checks [checkcnt - 1] = w;
1282	}	1501	}
1283		1502
1284	void	1503	void
1285	ev_check_stop (EV_P_ struct ev_check *w)	1504	ev_check_stop (EV_P_ struct ev_check *w)
1286	{	1505	{
1287	ev_clear_pending (EV_A_ (W)w);	1506	ev_clear_pending (EV_A_ (W)w);
1288	if (ev_is_active (w))	1507	if (!ev_is_active (w))
1289	return;	1508	return;
1290		1509
1291	checks [((W)w)->active - 1] = checks [--checkcnt];	1510	checks [((W)w)->active - 1] = checks [--checkcnt];
1292	ev_stop (EV_A_ (W)w);	1511	ev_stop (EV_A_ (W)w);
1293	}	1512	}
…		…
1298		1517
1299	void	1518	void
1300	ev_signal_start (EV_P_ struct ev_signal *w)	1519	ev_signal_start (EV_P_ struct ev_signal *w)
1301	{	1520	{
1302	#if EV_MULTIPLICITY	1521	#if EV_MULTIPLICITY
1303	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1522	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1304	#endif	1523	#endif
1305	if (ev_is_active (w))	1524	if (ev_is_active (w))
1306	return;	1525	return;
1307		1526
1308	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1527	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1309		1528
1310	ev_start (EV_A_ (W)w, 1);	1529	ev_start (EV_A_ (W)w, 1);
1311	array_needsize (signals, signalmax, w->signum, signals_init);	1530	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1312	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1531	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1313		1532
1314	if (!((WL)w)->next)	1533	if (!((WL)w)->next)
1315	{	1534	{
		1535	#if _WIN32
		1536	signal (w->signum, sighandler);
		1537	#else
1316	struct sigaction sa;	1538	struct sigaction sa;
1317	sa.sa_handler = sighandler;	1539	sa.sa_handler = sighandler;
1318	sigfillset (&sa.sa_mask);	1540	sigfillset (&sa.sa_mask);
1319	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1541	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1320	sigaction (w->signum, &sa, 0);	1542	sigaction (w->signum, &sa, 0);
		1543	#endif
1321	}	1544	}
1322	}	1545	}
1323		1546
1324	void	1547	void
1325	ev_signal_stop (EV_P_ struct ev_signal *w)	1548	ev_signal_stop (EV_P_ struct ev_signal *w)
…		…
1337		1560
1338	void	1561	void
1339	ev_child_start (EV_P_ struct ev_child *w)	1562	ev_child_start (EV_P_ struct ev_child *w)
1340	{	1563	{
1341	#if EV_MULTIPLICITY	1564	#if EV_MULTIPLICITY
1342	assert (("child watchers are only supported in the default loop", loop == default_loop));	1565	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1343	#endif	1566	#endif
1344	if (ev_is_active (w))	1567	if (ev_is_active (w))
1345	return;	1568	return;
1346		1569
1347	ev_start (EV_A_ (W)w, 1);	1570	ev_start (EV_A_ (W)w, 1);
…		…
1350		1573
1351	void	1574	void
1352	ev_child_stop (EV_P_ struct ev_child *w)	1575	ev_child_stop (EV_P_ struct ev_child *w)
1353	{	1576	{
1354	ev_clear_pending (EV_A_ (W)w);	1577	ev_clear_pending (EV_A_ (W)w);
1355	if (ev_is_active (w))	1578	if (!ev_is_active (w))
1356	return;	1579	return;
1357		1580
1358	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1581	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1359	ev_stop (EV_A_ (W)w);	1582	ev_stop (EV_A_ (W)w);
1360	}	1583	}
…		…
1375	void (cb)(int revents, void arg) = once->cb;	1598	void (cb)(int revents, void arg) = once->cb;
1376	void *arg = once->arg;	1599	void *arg = once->arg;
1377		1600
1378	ev_io_stop (EV_A_ &once->io);	1601	ev_io_stop (EV_A_ &once->io);
1379	ev_timer_stop (EV_A_ &once->to);	1602	ev_timer_stop (EV_A_ &once->to);
1380	free (once);	1603	ev_free (once);
1381		1604
1382	cb (revents, arg);	1605	cb (revents, arg);
1383	}	1606	}
1384		1607
1385	static void	1608	static void
…		…
1395	}	1618	}
1396		1619
1397	void	1620	void
1398	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1621	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1399	{	1622	{
1400	struct ev_once *once = malloc (sizeof (struct ev_once));	1623	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1401		1624
1402	if (!once)	1625	if (!once)
1403	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1626	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1404	else	1627	else
1405	{	1628	{
1406	once->cb = cb;	1629	once->cb = cb;
1407	once->arg = arg;	1630	once->arg = arg;
1408		1631
1409	ev_watcher_init (&once->io, once_cb_io);	1632	ev_init (&once->io, once_cb_io);
1410	if (fd >= 0)	1633	if (fd >= 0)
1411	{	1634	{
1412	ev_io_set (&once->io, fd, events);	1635	ev_io_set (&once->io, fd, events);
1413	ev_io_start (EV_A_ &once->io);	1636	ev_io_start (EV_A_ &once->io);
1414	}	1637	}
1415		1638
1416	ev_watcher_init (&once->to, once_cb_to);	1639	ev_init (&once->to, once_cb_to);
1417	if (timeout >= 0.)	1640	if (timeout >= 0.)
1418	{	1641	{
1419	ev_timer_set (&once->to, timeout, 0.);	1642	ev_timer_set (&once->to, timeout, 0.);
1420	ev_timer_start (EV_A_ &once->to);	1643	ev_timer_start (EV_A_ &once->to);
1421	}	1644	}
1422	}	1645	}
1423	}	1646	}
1424		1647
		1648	#ifdef __cplusplus
		1649	}
		1650	#endif
		1651

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Comparing libev/ev.c (file contents): Revision 1.65 by root, Sun Nov 4 23:29:48 2007 UTC vs. Revision 1.117 by ayin, Thu Nov 15 17:15:56 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.65 by root, Sun Nov 4 23:29:48 2007 UTC vs.
Revision 1.117 by ayin, Thu Nov 15 17:15:56 2007 UTC