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

Comparing libev/ev.c (file contents):
Revision 1.68 by root, Mon Nov 5 20:19:00 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
150	#if WIN32	181	#ifdef _WIN32
151	/* note: the comment below could not be substantiated, but what would I care */	182	# include "ev_win32.c"
152	/* MSDN says this is required to handle SIGFPE */
153	volatile double SIGFPE_REQ = 0.0f;
154	#endif	183	#endif
		184
		185	/*****************************************************************************/
		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)
155		232
156	/*****************************************************************************/	233	/*****************************************************************************/
157		234
158	typedef struct	235	typedef struct
159	{	236	{
160	WL head;	237	WL head;
161	unsigned char events;	238	unsigned char events;
162	unsigned char reify;	239	unsigned char reify;
		240	#if EV_SELECT_IS_WINSOCKET
		241	SOCKET handle;
		242	#endif
163	} ANFD;	243	} ANFD;
164		244
165	typedef struct	245	typedef struct
166	{	246	{
167	W w;	247	W w;
168	int events;	248	int events;
169	} ANPENDING;	249	} ANPENDING;
170		250
171	#if EV_MULTIPLICITY	251	#if EV_MULTIPLICITY
172		252
173	struct ev_loop	253	struct ev_loop
174	{	254	{
		255	ev_tstamp ev_rt_now;
		256	#define ev_rt_now ((loop)->ev_rt_now)
175	# define VAR(name,decl) decl;	257	#define VAR(name,decl) decl;
176	# include "ev_vars.h"	258	#include "ev_vars.h"
177	};
178	# undef VAR	259	#undef VAR
		260	};
179	# 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;
180		265
181	#else	266	#else
182		267
		268	ev_tstamp ev_rt_now;
183	# define VAR(name,decl) static decl;	269	#define VAR(name,decl) static decl;
184	# include "ev_vars.h"	270	#include "ev_vars.h"
185	# undef VAR	271	#undef VAR
		272
		273	static int ev_default_loop_ptr;
186		274
187	#endif	275	#endif
188		276
189	/*****************************************************************************/	277	/*****************************************************************************/
190		278
191	inline ev_tstamp	279	ev_tstamp
192	ev_time (void)	280	ev_time (void)
193	{	281	{
194	#if EV_USE_REALTIME	282	#if EV_USE_REALTIME
195	struct timespec ts;	283	struct timespec ts;
196	clock_gettime (CLOCK_REALTIME, &ts);	284	clock_gettime (CLOCK_REALTIME, &ts);
…		…
215	#endif	303	#endif
216		304
217	return ev_time ();	305	return ev_time ();
218	}	306	}
219		307
		308	#if EV_MULTIPLICITY
220	ev_tstamp	309	ev_tstamp
221	ev_now (EV_P)	310	ev_now (EV_P)
222	{	311	{
223	return rt_now;	312	return ev_rt_now;
224	}	313	}
		314	#endif
225		315
226	#define array_roundsize(base,n) ((n) \| 4 & ~3)	316	#define array_roundsize(type,n) (((n) \| 4) & ~3)
227		317
228	#define array_needsize(base,cur,cnt,init) \	318	#define array_needsize(type,base,cur,cnt,init) \
229	if (expect_false ((cnt) > cur)) \	319	if (expect_false ((cnt) > cur)) \
230	{ \	320	{ \
231	int newcnt = cur; \	321	int newcnt = cur; \
232	do \	322	do \
233	{ \	323	{ \
234	newcnt = array_roundsize (base, newcnt << 1); \	324	newcnt = array_roundsize (type, newcnt << 1); \
235	} \	325	} \
236	while ((cnt) > newcnt); \	326	while ((cnt) > newcnt); \
237	\	327	\
238	base = realloc (base, sizeof (base) (newcnt)); \	328	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
239	init (base + cur, newcnt - cur); \	329	init (base + cur, newcnt - cur); \
240	cur = newcnt; \	330	cur = newcnt; \
241	}	331	}
242		332
243	#define array_slim(stem) \	333	#define array_slim(type,stem) \
244	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	334	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
245	{ \	335	{ \
246	stem ## max = array_roundsize (stem ## cnt >> 1); \	336	stem ## max = array_roundsize (stem ## cnt >> 1); \
247	base = realloc (base, sizeof (base) (stem ## max)); \	337	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
248	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	338	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
249	}	339	}
250		340
251	#define array_free(stem, idx) \	341	#define array_free(stem, idx) \
252	free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	342	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
253		343
254	/*****************************************************************************/	344	/*****************************************************************************/
255		345
256	static void	346	static void
257	anfds_init (ANFD *base, int count)	347	anfds_init (ANFD *base, int count)
…		…
264		354
265	++base;	355	++base;
266	}	356	}
267	}	357	}
268		358
269	static void	359	void
270	event (EV_P_ W w, int events)	360	ev_feed_event (EV_P_ void *w, int revents)
271	{	361	{
		362	W w_ = (W)w;
		363
272	if (w->pending)	364	if (w_->pending)
273	{	365	{
274	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	366	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
275	return;	367	return;
276	}	368	}
277		369
278	w->pending = ++pendingcnt [ABSPRI (w)];	370	w_->pending = ++pendingcnt [ABSPRI (w_)];
279	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);
280	pendings [ABSPRI (w)][w->pending - 1].w = w;	372	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
281	pendings [ABSPRI (w)][w->pending - 1].events = events;	373	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
282	}	374	}
283		375
284	static void	376	static void
285	queue_events (EV_P_ W *events, int eventcnt, int type)	377	queue_events (EV_P_ W *events, int eventcnt, int type)
286	{	378	{
287	int i;	379	int i;
288		380
289	for (i = 0; i < eventcnt; ++i)	381	for (i = 0; i < eventcnt; ++i)
290	event (EV_A_ events [i], type);	382	ev_feed_event (EV_A_ events [i], type);
291	}	383	}
292		384
293	static void	385	inline void
294	fd_event (EV_P_ int fd, int events)	386	fd_event (EV_P_ int fd, int revents)
295	{	387	{
296	ANFD *anfd = anfds + fd;	388	ANFD *anfd = anfds + fd;
297	struct ev_io *w;	389	struct ev_io *w;
298		390
299	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)
300	{	392	{
301	int ev = w->events & events;	393	int ev = w->events & revents;
302		394
303	if (ev)	395	if (ev)
304	event (EV_A_ (W)w, ev);	396	ev_feed_event (EV_A_ (W)w, ev);
305	}	397	}
		398	}
		399
		400	void
		401	ev_feed_fd_event (EV_P_ int fd, int revents)
		402	{
		403	fd_event (EV_A_ fd, revents);
306	}	404	}
307		405
308	/*****************************************************************************/	406	/*****************************************************************************/
309		407
310	static void	408	static void
…		…
321	int events = 0;	419	int events = 0;
322		420
323	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)
324	events \|= w->events;	422	events \|= w->events;
325		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
326	anfd->reify = 0;	433	anfd->reify = 0;
327		434
328	method_modify (EV_A_ fd, anfd->events, events);	435	method_modify (EV_A_ fd, anfd->events, events);
329	anfd->events = events;	436	anfd->events = events;
330	}	437	}
…		…
333	}	440	}
334		441
335	static void	442	static void
336	fd_change (EV_P_ int fd)	443	fd_change (EV_P_ int fd)
337	{	444	{
338	if (anfds [fd].reify \|\| fdchangecnt < 0)	445	if (anfds [fd].reify)
339	return;	446	return;
340		447
341	anfds [fd].reify = 1;	448	anfds [fd].reify = 1;
342		449
343	++fdchangecnt;	450	++fdchangecnt;
344	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	451	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
345	fdchanges [fdchangecnt - 1] = fd;	452	fdchanges [fdchangecnt - 1] = fd;
346	}	453	}
347		454
348	static void	455	static void
349	fd_kill (EV_P_ int fd)	456	fd_kill (EV_P_ int fd)
…		…
351	struct ev_io *w;	458	struct ev_io *w;
352		459
353	while ((w = (struct ev_io *)anfds [fd].head))	460	while ((w = (struct ev_io *)anfds [fd].head))
354	{	461	{
355	ev_io_stop (EV_A_ w);	462	ev_io_stop (EV_A_ w);
356	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);
357	}	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
358	}	475	}
359		476
360	/* called on EBADF to verify fds */	477	/* called on EBADF to verify fds */
361	static void	478	static void
362	fd_ebadf (EV_P)	479	fd_ebadf (EV_P)
363	{	480	{
364	int fd;	481	int fd;
365		482
366	for (fd = 0; fd < anfdmax; ++fd)	483	for (fd = 0; fd < anfdmax; ++fd)
367	if (anfds [fd].events)	484	if (anfds [fd].events)
368	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	485	if (!fd_valid (fd) == -1 && errno == EBADF)
369	fd_kill (EV_A_ fd);	486	fd_kill (EV_A_ fd);
370	}	487	}
371		488
372	/* 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 */
373	static void	490	static void
…		…
381	fd_kill (EV_A_ fd);	498	fd_kill (EV_A_ fd);
382	return;	499	return;
383	}	500	}
384	}	501	}
385		502
386	/* 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 */
387	static void	504	static void
388	fd_rearm_all (EV_P)	505	fd_rearm_all (EV_P)
389	{	506	{
390	int fd;	507	int fd;
391		508
…		…
439		556
440	heap [k] = w;	557	heap [k] = w;
441	((W)heap [k])->active = k + 1;	558	((W)heap [k])->active = k + 1;
442	}	559	}
443		560
		561	inline void
		562	adjustheap (WT *heap, int N, int k)
		563	{
		564	upheap (heap, k);
		565	downheap (heap, N, k);
		566	}
		567
444	/*****************************************************************************/	568	/*****************************************************************************/
445		569
446	typedef struct	570	typedef struct
447	{	571	{
448	WL head;	572	WL head;
…		…
469	}	593	}
470		594
471	static void	595	static void
472	sighandler (int signum)	596	sighandler (int signum)
473	{	597	{
474	#if WIN32	598	#if _WIN32
475	signal (signum, sighandler);	599	signal (signum, sighandler);
476	#endif	600	#endif
477		601
478	signals [signum - 1].gotsig = 1;	602	signals [signum - 1].gotsig = 1;
479		603
…		…
484	write (sigpipe [1], &signum, 1);	608	write (sigpipe [1], &signum, 1);
485	errno = old_errno;	609	errno = old_errno;
486	}	610	}
487	}	611	}
488		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
489	static void	633	static void
490	sigcb (EV_P_ struct ev_io *iow, int revents)	634	sigcb (EV_P_ struct ev_io *iow, int revents)
491	{	635	{
492	WL w;
493	int signum;	636	int signum;
494		637
495	read (sigpipe [0], &revents, 1);	638	read (sigpipe [0], &revents, 1);
496	gotsig = 0;	639	gotsig = 0;
497		640
498	for (signum = signalmax; signum--; )	641	for (signum = signalmax; signum--; )
499	if (signals [signum].gotsig)	642	if (signals [signum].gotsig)
500	{	643	ev_feed_signal_event (EV_A_ signum + 1);
501	signals [signum].gotsig = 0;	644	}
502		645
503	for (w = signals [signum].head; w; w = w->next)	646	inline void
504	event (EV_A_ (W)w, EV_SIGNAL);	647	fd_intern (int fd)
505	}	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
506	}	656	}
507		657
508	static void	658	static void
509	siginit (EV_P)	659	siginit (EV_P)
510	{	660	{
511	#ifndef WIN32	661	fd_intern (sigpipe [0]);
512	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	662	fd_intern (sigpipe [1]);
513	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
514
515	/* rather than sort out wether we really need nb, set it */
516	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
517	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
518	#endif
519		663
520	ev_io_set (&sigev, sigpipe [0], EV_READ);	664	ev_io_set (&sigev, sigpipe [0], EV_READ);
521	ev_io_start (EV_A_ &sigev);	665	ev_io_start (EV_A_ &sigev);
522	ev_unref (EV_A); /* child watcher should not keep loop alive */	666	ev_unref (EV_A); /* child watcher should not keep loop alive */
523	}	667	}
524		668
525	/*****************************************************************************/	669	/*****************************************************************************/
526		670
527	#ifndef WIN32
528
529	static struct ev_child *childs [PID_HASHSIZE];	671	static struct ev_child *childs [PID_HASHSIZE];
		672
		673	#ifndef _WIN32
		674
530	static struct ev_signal childev;	675	static struct ev_signal childev;
531		676
532	#ifndef WCONTINUED	677	#ifndef WCONTINUED
533	# define WCONTINUED 0	678	# define WCONTINUED 0
534	#endif	679	#endif
…		…
542	if (w->pid == pid \|\| !w->pid)	687	if (w->pid == pid \|\| !w->pid)
543	{	688	{
544	ev_priority (w) = ev_priority (sw); /* need to do it now */	689	ev_priority (w) = ev_priority (sw); /* need to do it now */
545	w->rpid = pid;	690	w->rpid = pid;
546	w->rstatus = status;	691	w->rstatus = status;
547	event (EV_A_ (W)w, EV_CHILD);	692	ev_feed_event (EV_A_ (W)w, EV_CHILD);
548	}	693	}
549	}	694	}
550		695
551	static void	696	static void
552	childcb (EV_P_ struct ev_signal *sw, int revents)	697	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
554	int pid, status;	699	int pid, status;
555		700
556	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	701	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
557	{	702	{
558	/* 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 */
559	event (EV_A_ (W)sw, EV_SIGNAL);	704	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
560		705
561	child_reap (EV_A_ sw, pid, pid, status);	706	child_reap (EV_A_ sw, pid, pid, status);
562	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 */
563	}	708	}
564	}	709	}
…		…
594		739
595	/* 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 */
596	static int	741	static int
597	enable_secure (void)	742	enable_secure (void)
598	{	743	{
599	#ifdef WIN32	744	#ifdef _WIN32
600	return 0;	745	return 0;
601	#else	746	#else
602	return getuid () != geteuid ()	747	return getuid () != geteuid ()
603	\|\| getgid () != getegid ();	748	\|\| getgid () != getegid ();
604	#endif	749	#endif
605	}	750	}
606		751
607	int	752	unsigned int
608	ev_method (EV_P)	753	ev_method (EV_P)
609	{	754	{
610	return method;	755	return method;
611	}	756	}
612		757
613	static void	758	static void
614	loop_init (EV_P_ int methods)	759	loop_init (EV_P_ unsigned int flags)
615	{	760	{
616	if (!method)	761	if (!method)
617	{	762	{
618	#if EV_USE_MONOTONIC	763	#if EV_USE_MONOTONIC
619	{	764	{
…		…
621	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	766	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
622	have_monotonic = 1;	767	have_monotonic = 1;
623	}	768	}
624	#endif	769	#endif
625		770
626	rt_now = ev_time ();	771	ev_rt_now = ev_time ();
627	mn_now = get_clock ();	772	mn_now = get_clock ();
628	now_floor = mn_now;	773	now_floor = mn_now;
629	rtmn_diff = rt_now - mn_now;	774	rtmn_diff = ev_rt_now - mn_now;
630		775
631	if (methods == EVMETHOD_AUTO)	776	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
632	if (!enable_secure () && getenv ("LIBEV_METHODS"))
633	methods = atoi (getenv ("LIBEV_METHODS"));	777	flags = atoi (getenv ("LIBEV_FLAGS"));
634	else	778
635	methods = EVMETHOD_ANY;	779	if (!(flags & 0x0000ffff))
		780	flags \|= 0x0000ffff;
636		781
637	method = 0;	782	method = 0;
638	#if EV_USE_WIN32
639	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
640	#endif
641	#if EV_USE_KQUEUE	783	#if EV_USE_KQUEUE
642	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	784	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
643	#endif	785	#endif
644	#if EV_USE_EPOLL	786	#if EV_USE_EPOLL
645	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	787	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
646	#endif	788	#endif
647	#if EV_USE_POLL	789	#if EV_USE_POLL
648	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	790	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
649	#endif	791	#endif
650	#if EV_USE_SELECT	792	#if EV_USE_SELECT
651	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	793	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
652	#endif	794	#endif
		795
		796	ev_init (&sigev, sigcb);
		797	ev_set_priority (&sigev, EV_MAXPRI);
653	}	798	}
654	}	799	}
655		800
656	void	801	void
657	loop_destroy (EV_P)	802	loop_destroy (EV_P)
658	{	803	{
659	int i;	804	int i;
660		805
661	#if EV_USE_WIN32
662	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
663	#endif
664	#if EV_USE_KQUEUE	806	#if EV_USE_KQUEUE
665	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	807	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
666	#endif	808	#endif
667	#if EV_USE_EPOLL	809	#if EV_USE_EPOLL
668	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	810	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
…		…
675	#endif	817	#endif
676		818
677	for (i = NUMPRI; i--; )	819	for (i = NUMPRI; i--; )
678	array_free (pending, [i]);	820	array_free (pending, [i]);
679		821
		822	/* have to use the microsoft-never-gets-it-right macro */
680	array_free (fdchange, );	823	array_free (fdchange, EMPTY0);
681	array_free (timer, );	824	array_free (timer, EMPTY0);
		825	#if EV_PERIODICS
682	array_free (periodic, );	826	array_free (periodic, EMPTY0);
		827	#endif
683	array_free (idle, );	828	array_free (idle, EMPTY0);
684	array_free (prepare, );	829	array_free (prepare, EMPTY0);
685	array_free (check, );	830	array_free (check, EMPTY0);
686		831
687	method = 0;	832	method = 0;
688	/TODO/
689	}	833	}
690		834
691	void	835	static void
692	loop_fork (EV_P)	836	loop_fork (EV_P)
693	{	837	{
694	/TODO/
695	#if EV_USE_EPOLL	838	#if EV_USE_EPOLL
696	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	839	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
697	#endif	840	#endif
698	#if EV_USE_KQUEUE	841	#if EV_USE_KQUEUE
699	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	842	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
700	#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;
701	}	861	}
702		862
703	#if EV_MULTIPLICITY	863	#if EV_MULTIPLICITY
704	struct ev_loop *	864	struct ev_loop *
705	ev_loop_new (int methods)	865	ev_loop_new (unsigned int flags)
706	{	866	{
707	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));
708		868
		869	memset (loop, 0, sizeof (struct ev_loop));
		870
709	loop_init (EV_A_ methods);	871	loop_init (EV_A_ flags);
710		872
711	if (ev_method (EV_A))	873	if (ev_method (EV_A))
712	return loop;	874	return loop;
713		875
714	return 0;	876	return 0;
…		…
716		878
717	void	879	void
718	ev_loop_destroy (EV_P)	880	ev_loop_destroy (EV_P)
719	{	881	{
720	loop_destroy (EV_A);	882	loop_destroy (EV_A);
721	free (loop);	883	ev_free (loop);
722	}	884	}
723		885
724	void	886	void
725	ev_loop_fork (EV_P)	887	ev_loop_fork (EV_P)
726	{	888	{
727	loop_fork (EV_A);	889	postfork = 1;
728	}	890	}
729		891
730	#endif	892	#endif
731		893
732	#if EV_MULTIPLICITY	894	#if EV_MULTIPLICITY
733	struct ev_loop default_loop_struct;
734	static struct ev_loop *default_loop;
735
736	struct ev_loop *	895	struct ev_loop *
		896	ev_default_loop_ (unsigned int flags)
737	#else	897	#else
738	static int default_loop;
739
740	int	898	int
		899	ev_default_loop (unsigned int flags)
741	#endif	900	#endif
742	ev_default_loop (int methods)
743	{	901	{
744	if (sigpipe [0] == sigpipe [1])	902	if (sigpipe [0] == sigpipe [1])
745	if (pipe (sigpipe))	903	if (pipe (sigpipe))
746	return 0;	904	return 0;
747		905
748	if (!default_loop)	906	if (!ev_default_loop_ptr)
749	{	907	{
750	#if EV_MULTIPLICITY	908	#if EV_MULTIPLICITY
751	struct ev_loop *loop = default_loop = &default_loop_struct;	909	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
752	#else	910	#else
753	default_loop = 1;	911	ev_default_loop_ptr = 1;
754	#endif	912	#endif
755		913
756	loop_init (EV_A_ methods);	914	loop_init (EV_A_ flags);
757		915
758	if (ev_method (EV_A))	916	if (ev_method (EV_A))
759	{	917	{
760	ev_watcher_init (&sigev, sigcb);
761	ev_set_priority (&sigev, EV_MAXPRI);
762	siginit (EV_A);	918	siginit (EV_A);
763		919
764	#ifndef WIN32	920	#ifndef _WIN32
765	ev_signal_init (&childev, childcb, SIGCHLD);	921	ev_signal_init (&childev, childcb, SIGCHLD);
766	ev_set_priority (&childev, EV_MAXPRI);	922	ev_set_priority (&childev, EV_MAXPRI);
767	ev_signal_start (EV_A_ &childev);	923	ev_signal_start (EV_A_ &childev);
768	ev_unref (EV_A); /* child watcher should not keep loop alive */	924	ev_unref (EV_A); /* child watcher should not keep loop alive */
769	#endif	925	#endif
770	}	926	}
771	else	927	else
772	default_loop = 0;	928	ev_default_loop_ptr = 0;
773	}	929	}
774		930
775	return default_loop;	931	return ev_default_loop_ptr;
776	}	932	}
777		933
778	void	934	void
779	ev_default_destroy (void)	935	ev_default_destroy (void)
780	{	936	{
781	#if EV_MULTIPLICITY	937	#if EV_MULTIPLICITY
782	struct ev_loop *loop = default_loop;	938	struct ev_loop *loop = ev_default_loop_ptr;
783	#endif	939	#endif
784		940
		941	#ifndef _WIN32
785	ev_ref (EV_A); /* child watcher */	942	ev_ref (EV_A); /* child watcher */
786	ev_signal_stop (EV_A_ &childev);	943	ev_signal_stop (EV_A_ &childev);
		944	#endif
787		945
788	ev_ref (EV_A); /* signal watcher */	946	ev_ref (EV_A); /* signal watcher */
789	ev_io_stop (EV_A_ &sigev);	947	ev_io_stop (EV_A_ &sigev);
790		948
791	close (sigpipe [0]); sigpipe [0] = 0;	949	close (sigpipe [0]); sigpipe [0] = 0;
…		…
796		954
797	void	955	void
798	ev_default_fork (void)	956	ev_default_fork (void)
799	{	957	{
800	#if EV_MULTIPLICITY	958	#if EV_MULTIPLICITY
801	struct ev_loop *loop = default_loop;	959	struct ev_loop *loop = ev_default_loop_ptr;
802	#endif	960	#endif
803		961
804	loop_fork (EV_A);	962	if (method)
805		963	postfork = 1;
806	ev_io_stop (EV_A_ &sigev);
807	close (sigpipe [0]);
808	close (sigpipe [1]);
809	pipe (sigpipe);
810
811	ev_ref (EV_A); /* signal watcher */
812	siginit (EV_A);
813	}	964	}
814		965
815	/*****************************************************************************/	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	}
816		979
817	static void	980	static void
818	call_pending (EV_P)	981	call_pending (EV_P)
819	{	982	{
820	int pri;	983	int pri;
…		…
825	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	988	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
826		989
827	if (p->w)	990	if (p->w)
828	{	991	{
829	p->w->pending = 0;	992	p->w->pending = 0;
830	p->w->cb (EV_A_ p->w, p->events);	993	EV_CB_INVOKE (p->w, p->events);
831	}	994	}
832	}	995	}
833	}	996	}
834		997
835	static void	998	static void
…		…
843		1006
844	/* first reschedule or stop timer */	1007	/* first reschedule or stop timer */
845	if (w->repeat)	1008	if (w->repeat)
846	{	1009	{
847	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
848	((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
849	downheap ((WT *)timers, timercnt, 0);	1016	downheap ((WT *)timers, timercnt, 0);
850	}	1017	}
851	else	1018	else
852	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1019	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
853		1020
854	event (EV_A_ (W)w, EV_TIMEOUT);	1021	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
855	}	1022	}
856	}	1023	}
857		1024
		1025	#if EV_PERIODICS
858	static void	1026	static void
859	periodics_reify (EV_P)	1027	periodics_reify (EV_P)
860	{	1028	{
861	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1029	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
862	{	1030	{
863	struct ev_periodic *w = periodics [0];	1031	struct ev_periodic *w = periodics [0];
864		1032
865	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1033	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
866		1034
867	/* first reschedule or stop timer */	1035	/* first reschedule or stop timer */
868	if (w->interval)	1036	if (w->reschedule_cb)
869	{	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	{
870	((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;
871	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));
872	downheap ((WT *)periodics, periodiccnt, 0);	1046	downheap ((WT *)periodics, periodiccnt, 0);
873	}	1047	}
874	else	1048	else
875	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1049	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
876		1050
877	event (EV_A_ (W)w, EV_PERIODIC);	1051	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
878	}	1052	}
879	}	1053	}
880		1054
881	static void	1055	static void
882	periodics_reschedule (EV_P)	1056	periodics_reschedule (EV_P)
…		…
886	/* adjust periodics after time jump */	1060	/* adjust periodics after time jump */
887	for (i = 0; i < periodiccnt; ++i)	1061	for (i = 0; i < periodiccnt; ++i)
888	{	1062	{
889	struct ev_periodic *w = periodics [i];	1063	struct ev_periodic *w = periodics [i];
890		1064
		1065	if (w->reschedule_cb)
		1066	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
891	if (w->interval)	1067	else if (w->interval)
892	{
893	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;
894
895	if (fabs (diff) >= 1e-4)
896	{
897	ev_periodic_stop (EV_A_ w);
898	ev_periodic_start (EV_A_ w);
899
900	i = 0; /* restart loop, inefficient, but time jumps should be rare */
901	}
902	}
903	}	1069	}
		1070
		1071	/* now rebuild the heap */
		1072	for (i = periodiccnt >> 1; i--; )
		1073	downheap ((WT *)periodics, periodiccnt, i);
904	}	1074	}
		1075	#endif
905		1076
906	inline int	1077	inline int
907	time_update_monotonic (EV_P)	1078	time_update_monotonic (EV_P)
908	{	1079	{
909	mn_now = get_clock ();	1080	mn_now = get_clock ();
910		1081
911	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1082	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
912	{	1083	{
913	rt_now = rtmn_diff + mn_now;	1084	ev_rt_now = rtmn_diff + mn_now;
914	return 0;	1085	return 0;
915	}	1086	}
916	else	1087	else
917	{	1088	{
918	now_floor = mn_now;	1089	now_floor = mn_now;
919	rt_now = ev_time ();	1090	ev_rt_now = ev_time ();
920	return 1;	1091	return 1;
921	}	1092	}
922	}	1093	}
923		1094
924	static void	1095	static void
…		…
933	{	1104	{
934	ev_tstamp odiff = rtmn_diff;	1105	ev_tstamp odiff = rtmn_diff;
935		1106
936	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 */
937	{	1108	{
938	rtmn_diff = rt_now - mn_now;	1109	rtmn_diff = ev_rt_now - mn_now;
939		1110
940	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1111	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
941	return; /* all is well */	1112	return; /* all is well */
942		1113
943	rt_now = ev_time ();	1114	ev_rt_now = ev_time ();
944	mn_now = get_clock ();	1115	mn_now = get_clock ();
945	now_floor = mn_now;	1116	now_floor = mn_now;
946	}	1117	}
947		1118
		1119	# if EV_PERIODICS
948	periodics_reschedule (EV_A);	1120	periodics_reschedule (EV_A);
		1121	# endif
949	/* no timer adjustment, as the monotonic clock doesn't jump */	1122	/* no timer adjustment, as the monotonic clock doesn't jump */
950	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1123	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
951	}	1124	}
952	}	1125	}
953	else	1126	else
954	#endif	1127	#endif
955	{	1128	{
956	rt_now = ev_time ();	1129	ev_rt_now = ev_time ();
957		1130
958	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))
959	{	1132	{
		1133	#if EV_PERIODICS
960	periodics_reschedule (EV_A);	1134	periodics_reschedule (EV_A);
		1135	#endif
961		1136
962	/* 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 */
963	for (i = 0; i < timercnt; ++i)	1138	for (i = 0; i < timercnt; ++i)
964	((WT)timers [i])->at += rt_now - mn_now;	1139	((WT)timers [i])->at += ev_rt_now - mn_now;
965	}	1140	}
966		1141
967	mn_now = rt_now;	1142	mn_now = ev_rt_now;
968	}	1143	}
969	}	1144	}
970		1145
971	void	1146	void
972	ev_ref (EV_P)	1147	ev_ref (EV_P)
…		…
986	ev_loop (EV_P_ int flags)	1161	ev_loop (EV_P_ int flags)
987	{	1162	{
988	double block;	1163	double block;
989	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1164	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
990		1165
991	do	1166	while (activecnt)
992	{	1167	{
993	/* queue check watchers (and execute them) */	1168	/* queue check watchers (and execute them) */
994	if (expect_false (preparecnt))	1169	if (expect_false (preparecnt))
995	{	1170	{
996	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1171	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
997	call_pending (EV_A);	1172	call_pending (EV_A);
998	}	1173	}
999		1174
		1175	/* we might have forked, so reify kernel state if necessary */
		1176	if (expect_false (postfork))
		1177	loop_fork (EV_A);
		1178
1000	/* update fd-related kernel structures */	1179	/* update fd-related kernel structures */
1001	fd_reify (EV_A);	1180	fd_reify (EV_A);
1002		1181
1003	/* calculate blocking time */	1182	/* calculate blocking time */
1004		1183
1005	/* 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
1006	always have timers, we just calculate it always */	1185	always have timers, we just calculate it always */
1007	#if EV_USE_MONOTONIC	1186	#if EV_USE_MONOTONIC
1008	if (expect_true (have_monotonic))	1187	if (expect_true (have_monotonic))
1009	time_update_monotonic (EV_A);	1188	time_update_monotonic (EV_A);
1010	else	1189	else
1011	#endif	1190	#endif
1012	{	1191	{
1013	rt_now = ev_time ();	1192	ev_rt_now = ev_time ();
1014	mn_now = rt_now;	1193	mn_now = ev_rt_now;
1015	}	1194	}
1016		1195
1017	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1196	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1018	block = 0.;	1197	block = 0.;
1019	else	1198	else
…		…
1024	{	1203	{
1025	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1204	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
1026	if (block > to) block = to;	1205	if (block > to) block = to;
1027	}	1206	}
1028		1207
		1208	#if EV_PERIODICS
1029	if (periodiccnt)	1209	if (periodiccnt)
1030	{	1210	{
1031	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1211	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
1032	if (block > to) block = to;	1212	if (block > to) block = to;
1033	}	1213	}
		1214	#endif
1034		1215
1035	if (block < 0.) block = 0.;	1216	if (block < 0.) block = 0.;
1036	}	1217	}
1037		1218
1038	method_poll (EV_A_ block);	1219	method_poll (EV_A_ block);
1039		1220
1040	/* update rt_now, do magic */	1221	/* update ev_rt_now, do magic */
1041	time_update (EV_A);	1222	time_update (EV_A);
1042		1223
1043	/* queue pending timers and reschedule them */	1224	/* queue pending timers and reschedule them */
1044	timers_reify (EV_A); /* relative timers called last */	1225	timers_reify (EV_A); /* relative timers called last */
		1226	#if EV_PERIODICS
1045	periodics_reify (EV_A); /* absolute timers called first */	1227	periodics_reify (EV_A); /* absolute timers called first */
		1228	#endif
1046		1229
1047	/* queue idle watchers unless io or timers are pending */	1230	/* queue idle watchers unless io or timers are pending */
1048	if (!pendingcnt)	1231	if (idlecnt && !any_pending (EV_A))
1049	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1232	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1050		1233
1051	/* queue check watchers, to be executed first */	1234	/* queue check watchers, to be executed first */
1052	if (checkcnt)	1235	if (checkcnt)
1053	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1236	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1054		1237
1055	call_pending (EV_A);	1238	call_pending (EV_A);
		1239
		1240	if (loop_done)
		1241	break;
1056	}	1242	}
1057	while (activecnt && !loop_done);
1058		1243
1059	if (loop_done != 2)	1244	if (loop_done != 2)
1060	loop_done = 0;	1245	loop_done = 0;
1061	}	1246	}
1062		1247
…		…
1128	return;	1313	return;
1129		1314
1130	assert (("ev_io_start called with negative fd", fd >= 0));	1315	assert (("ev_io_start called with negative fd", fd >= 0));
1131		1316
1132	ev_start (EV_A_ (W)w, 1);	1317	ev_start (EV_A_ (W)w, 1);
1133	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1318	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1134	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1319	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1135		1320
1136	fd_change (EV_A_ fd);	1321	fd_change (EV_A_ fd);
1137	}	1322	}
1138		1323
…		…
1141	{	1326	{
1142	ev_clear_pending (EV_A_ (W)w);	1327	ev_clear_pending (EV_A_ (W)w);
1143	if (!ev_is_active (w))	1328	if (!ev_is_active (w))
1144	return;	1329	return;
1145		1330
		1331	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1332
1146	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1333	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1147	ev_stop (EV_A_ (W)w);	1334	ev_stop (EV_A_ (W)w);
1148		1335
1149	fd_change (EV_A_ w->fd);	1336	fd_change (EV_A_ w->fd);
1150	}	1337	}
…		…
1158	((WT)w)->at += mn_now;	1345	((WT)w)->at += mn_now;
1159		1346
1160	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.));
1161		1348
1162	ev_start (EV_A_ (W)w, ++timercnt);	1349	ev_start (EV_A_ (W)w, ++timercnt);
1163	array_needsize (timers, timermax, timercnt, );	1350	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1164	timers [timercnt - 1] = w;	1351	timers [timercnt - 1] = w;
1165	upheap ((WT *)timers, timercnt - 1);	1352	upheap ((WT *)timers, timercnt - 1);
1166		1353
1167	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1354	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1168	}	1355	}
…		…
1177	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1364	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1178		1365
1179	if (((W)w)->active < timercnt--)	1366	if (((W)w)->active < timercnt--)
1180	{	1367	{
1181	timers [((W)w)->active - 1] = timers [timercnt];	1368	timers [((W)w)->active - 1] = timers [timercnt];
1182	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1369	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1183	}	1370	}
1184		1371
1185	((WT)w)->at = w->repeat;	1372	((WT)w)->at -= mn_now;
1186		1373
1187	ev_stop (EV_A_ (W)w);	1374	ev_stop (EV_A_ (W)w);
1188	}	1375	}
1189		1376
1190	void	1377	void
…		…
1193	if (ev_is_active (w))	1380	if (ev_is_active (w))
1194	{	1381	{
1195	if (w->repeat)	1382	if (w->repeat)
1196	{	1383	{
1197	((WT)w)->at = mn_now + w->repeat;	1384	((WT)w)->at = mn_now + w->repeat;
1198	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1385	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1199	}	1386	}
1200	else	1387	else
1201	ev_timer_stop (EV_A_ w);	1388	ev_timer_stop (EV_A_ w);
1202	}	1389	}
1203	else if (w->repeat)	1390	else if (w->repeat)
		1391	{
		1392	w->at = w->repeat;
1204	ev_timer_start (EV_A_ w);	1393	ev_timer_start (EV_A_ w);
		1394	}
1205	}	1395	}
1206		1396
		1397	#if EV_PERIODICS
1207	void	1398	void
1208	ev_periodic_start (EV_P_ struct ev_periodic *w)	1399	ev_periodic_start (EV_P_ struct ev_periodic *w)
1209	{	1400	{
1210	if (ev_is_active (w))	1401	if (ev_is_active (w))
1211	return;	1402	return;
1212		1403
		1404	if (w->reschedule_cb)
		1405	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1406	else if (w->interval)
		1407	{
1213	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.));
1214
1215	/* 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 */
1216	if (w->interval)
1217	((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	}
1218		1412
1219	ev_start (EV_A_ (W)w, ++periodiccnt);	1413	ev_start (EV_A_ (W)w, ++periodiccnt);
1220	array_needsize (periodics, periodicmax, periodiccnt, );	1414	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1221	periodics [periodiccnt - 1] = w;	1415	periodics [periodiccnt - 1] = w;
1222	upheap ((WT *)periodics, periodiccnt - 1);	1416	upheap ((WT *)periodics, periodiccnt - 1);
1223		1417
1224	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1418	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1225	}	1419	}
…		…
1234	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1428	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1235		1429
1236	if (((W)w)->active < periodiccnt--)	1430	if (((W)w)->active < periodiccnt--)
1237	{	1431	{
1238	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1432	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1239	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1433	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1240	}	1434	}
1241		1435
1242	ev_stop (EV_A_ (W)w);	1436	ev_stop (EV_A_ (W)w);
1243	}	1437	}
1244		1438
1245	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
1246	ev_idle_start (EV_P_ struct ev_idle *w)	1449	ev_idle_start (EV_P_ struct ev_idle *w)
1247	{	1450	{
1248	if (ev_is_active (w))	1451	if (ev_is_active (w))
1249	return;	1452	return;
1250		1453
1251	ev_start (EV_A_ (W)w, ++idlecnt);	1454	ev_start (EV_A_ (W)w, ++idlecnt);
1252	array_needsize (idles, idlemax, idlecnt, );	1455	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1253	idles [idlecnt - 1] = w;	1456	idles [idlecnt - 1] = w;
1254	}	1457	}
1255		1458
1256	void	1459	void
1257	ev_idle_stop (EV_P_ struct ev_idle *w)	1460	ev_idle_stop (EV_P_ struct ev_idle *w)
1258	{	1461	{
1259	ev_clear_pending (EV_A_ (W)w);	1462	ev_clear_pending (EV_A_ (W)w);
1260	if (ev_is_active (w))	1463	if (!ev_is_active (w))
1261	return;	1464	return;
1262		1465
1263	idles [((W)w)->active - 1] = idles [--idlecnt];	1466	idles [((W)w)->active - 1] = idles [--idlecnt];
1264	ev_stop (EV_A_ (W)w);	1467	ev_stop (EV_A_ (W)w);
1265	}	1468	}
…		…
1269	{	1472	{
1270	if (ev_is_active (w))	1473	if (ev_is_active (w))
1271	return;	1474	return;
1272		1475
1273	ev_start (EV_A_ (W)w, ++preparecnt);	1476	ev_start (EV_A_ (W)w, ++preparecnt);
1274	array_needsize (prepares, preparemax, preparecnt, );	1477	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1275	prepares [preparecnt - 1] = w;	1478	prepares [preparecnt - 1] = w;
1276	}	1479	}
1277		1480
1278	void	1481	void
1279	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1482	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1280	{	1483	{
1281	ev_clear_pending (EV_A_ (W)w);	1484	ev_clear_pending (EV_A_ (W)w);
1282	if (ev_is_active (w))	1485	if (!ev_is_active (w))
1283	return;	1486	return;
1284		1487
1285	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1488	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1286	ev_stop (EV_A_ (W)w);	1489	ev_stop (EV_A_ (W)w);
1287	}	1490	}
…		…
1291	{	1494	{
1292	if (ev_is_active (w))	1495	if (ev_is_active (w))
1293	return;	1496	return;
1294		1497
1295	ev_start (EV_A_ (W)w, ++checkcnt);	1498	ev_start (EV_A_ (W)w, ++checkcnt);
1296	array_needsize (checks, checkmax, checkcnt, );	1499	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1297	checks [checkcnt - 1] = w;	1500	checks [checkcnt - 1] = w;
1298	}	1501	}
1299		1502
1300	void	1503	void
1301	ev_check_stop (EV_P_ struct ev_check *w)	1504	ev_check_stop (EV_P_ struct ev_check *w)
1302	{	1505	{
1303	ev_clear_pending (EV_A_ (W)w);	1506	ev_clear_pending (EV_A_ (W)w);
1304	if (ev_is_active (w))	1507	if (!ev_is_active (w))
1305	return;	1508	return;
1306		1509
1307	checks [((W)w)->active - 1] = checks [--checkcnt];	1510	checks [((W)w)->active - 1] = checks [--checkcnt];
1308	ev_stop (EV_A_ (W)w);	1511	ev_stop (EV_A_ (W)w);
1309	}	1512	}
…		…
1314		1517
1315	void	1518	void
1316	ev_signal_start (EV_P_ struct ev_signal *w)	1519	ev_signal_start (EV_P_ struct ev_signal *w)
1317	{	1520	{
1318	#if EV_MULTIPLICITY	1521	#if EV_MULTIPLICITY
1319	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));
1320	#endif	1523	#endif
1321	if (ev_is_active (w))	1524	if (ev_is_active (w))
1322	return;	1525	return;
1323		1526
1324	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));
1325		1528
1326	ev_start (EV_A_ (W)w, 1);	1529	ev_start (EV_A_ (W)w, 1);
1327	array_needsize (signals, signalmax, w->signum, signals_init);	1530	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1328	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1531	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1329		1532
1330	if (!((WL)w)->next)	1533	if (!((WL)w)->next)
1331	{	1534	{
1332	#if WIN32	1535	#if _WIN32
1333	signal (w->signum, sighandler);	1536	signal (w->signum, sighandler);
1334	#else	1537	#else
1335	struct sigaction sa;	1538	struct sigaction sa;
1336	sa.sa_handler = sighandler;	1539	sa.sa_handler = sighandler;
1337	sigfillset (&sa.sa_mask);	1540	sigfillset (&sa.sa_mask);
…		…
1357		1560
1358	void	1561	void
1359	ev_child_start (EV_P_ struct ev_child *w)	1562	ev_child_start (EV_P_ struct ev_child *w)
1360	{	1563	{
1361	#if EV_MULTIPLICITY	1564	#if EV_MULTIPLICITY
1362	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));
1363	#endif	1566	#endif
1364	if (ev_is_active (w))	1567	if (ev_is_active (w))
1365	return;	1568	return;
1366		1569
1367	ev_start (EV_A_ (W)w, 1);	1570	ev_start (EV_A_ (W)w, 1);
…		…
1370		1573
1371	void	1574	void
1372	ev_child_stop (EV_P_ struct ev_child *w)	1575	ev_child_stop (EV_P_ struct ev_child *w)
1373	{	1576	{
1374	ev_clear_pending (EV_A_ (W)w);	1577	ev_clear_pending (EV_A_ (W)w);
1375	if (ev_is_active (w))	1578	if (!ev_is_active (w))
1376	return;	1579	return;
1377		1580
1378	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1581	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1379	ev_stop (EV_A_ (W)w);	1582	ev_stop (EV_A_ (W)w);
1380	}	1583	}
…		…
1395	void (cb)(int revents, void arg) = once->cb;	1598	void (cb)(int revents, void arg) = once->cb;
1396	void *arg = once->arg;	1599	void *arg = once->arg;
1397		1600
1398	ev_io_stop (EV_A_ &once->io);	1601	ev_io_stop (EV_A_ &once->io);
1399	ev_timer_stop (EV_A_ &once->to);	1602	ev_timer_stop (EV_A_ &once->to);
1400	free (once);	1603	ev_free (once);
1401		1604
1402	cb (revents, arg);	1605	cb (revents, arg);
1403	}	1606	}
1404		1607
1405	static void	1608	static void
…		…
1415	}	1618	}
1416		1619
1417	void	1620	void
1418	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)
1419	{	1622	{
1420	struct ev_once *once = malloc (sizeof (struct ev_once));	1623	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1421		1624
1422	if (!once)	1625	if (!once)
1423	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1626	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1424	else	1627	else
1425	{	1628	{
1426	once->cb = cb;	1629	once->cb = cb;
1427	once->arg = arg;	1630	once->arg = arg;
1428		1631
1429	ev_watcher_init (&once->io, once_cb_io);	1632	ev_init (&once->io, once_cb_io);
1430	if (fd >= 0)	1633	if (fd >= 0)
1431	{	1634	{
1432	ev_io_set (&once->io, fd, events);	1635	ev_io_set (&once->io, fd, events);
1433	ev_io_start (EV_A_ &once->io);	1636	ev_io_start (EV_A_ &once->io);
1434	}	1637	}
1435		1638
1436	ev_watcher_init (&once->to, once_cb_to);	1639	ev_init (&once->to, once_cb_to);
1437	if (timeout >= 0.)	1640	if (timeout >= 0.)
1438	{	1641	{
1439	ev_timer_set (&once->to, timeout, 0.);	1642	ev_timer_set (&once->to, timeout, 0.);
1440	ev_timer_start (EV_A_ &once->to);	1643	ev_timer_start (EV_A_ &once->to);
1441	}	1644	}
1442	}	1645	}
1443	}	1646	}
1444		1647
		1648	#ifdef __cplusplus
		1649	}
		1650	#endif
		1651

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Comparing libev/ev.c (file contents): Revision 1.68 by root, Mon Nov 5 20:19:00 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 1.68 by root, Mon Nov 5 20:19:00 2007 UTC vs.
Revision 1.117 by ayin, Thu Nov 15 17:15:56 2007 UTC