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

Comparing libev/ev.c (file contents):
Revision 1.63 by root, Sun Nov 4 22:03:17 2007 UTC vs.
Revision 1.110 by root, Mon Nov 12 05:56:49 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 EMPTY /* required for microsofts broken pseudo-c compiler */
		173
144	typedef struct ev_watcher *W;	174	typedef struct ev_watcher *W;
145	typedef struct ev_watcher_list *WL;	175	typedef struct ev_watcher_list *WL;
146	typedef struct ev_watcher_time *WT;	176	typedef struct ev_watcher_time *WT;
147		177
148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	178	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149		179
		180	#ifdef _WIN32
		181	# include "ev_win32.c"
		182	#endif
		183
150	/*****************************************************************************/	184	/*****************************************************************************/
151		185
		186	static void (syserr_cb)(const char msg);
		187
		188	void ev_set_syserr_cb (void (cb)(const char msg))
		189	{
		190	syserr_cb = cb;
		191	}
		192
		193	static void
		194	syserr (const char *msg)
		195	{
		196	if (!msg)
		197	msg = "(libev) system error";
		198
		199	if (syserr_cb)
		200	syserr_cb (msg);
		201	else
		202	{
		203	perror (msg);
		204	abort ();
		205	}
		206	}
		207
		208	static void (alloc)(void *ptr, long size);
		209
		210	void ev_set_allocator (void (cb)(void *ptr, long size))
		211	{
		212	alloc = cb;
		213	}
		214
		215	static void *
		216	ev_realloc (void *ptr, long size)
		217	{
		218	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		219
		220	if (!ptr && size)
		221	{
		222	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		223	abort ();
		224	}
		225
		226	return ptr;
		227	}
		228
		229	#define ev_malloc(size) ev_realloc (0, (size))
		230	#define ev_free(ptr) ev_realloc ((ptr), 0)
		231
		232	/*****************************************************************************/
		233
152	typedef struct	234	typedef struct
153	{	235	{
154	struct ev_watcher_list *head;	236	WL head;
155	unsigned char events;	237	unsigned char events;
156	unsigned char reify;	238	unsigned char reify;
		239	#if EV_SELECT_IS_WINSOCKET
		240	SOCKET handle;
		241	#endif
157	} ANFD;	242	} ANFD;
158		243
159	typedef struct	244	typedef struct
160	{	245	{
161	W w;	246	W w;
162	int events;	247	int events;
163	} ANPENDING;	248	} ANPENDING;
164		249
165	#if EV_MULTIPLICITY	250	#if EV_MULTIPLICITY
166		251
167	struct ev_loop	252	struct ev_loop
168	{	253	{
		254	ev_tstamp ev_rt_now;
		255	#define ev_rt_now ((loop)->ev_rt_now)
169	# define VAR(name,decl) decl;	256	#define VAR(name,decl) decl;
170	# include "ev_vars.h"	257	#include "ev_vars.h"
171	};
172	# undef VAR	258	#undef VAR
		259	};
173	# include "ev_wrap.h"	260	#include "ev_wrap.h"
		261
		262	struct ev_loop default_loop_struct;
		263	static struct ev_loop *default_loop;
174		264
175	#else	265	#else
176		266
		267	ev_tstamp ev_rt_now;
177	# define VAR(name,decl) static decl;	268	#define VAR(name,decl) static decl;
178	# include "ev_vars.h"	269	#include "ev_vars.h"
179	# undef VAR	270	#undef VAR
		271
		272	static int default_loop;
180		273
181	#endif	274	#endif
182		275
183	/*****************************************************************************/	276	/*****************************************************************************/
184		277
185	inline ev_tstamp	278	ev_tstamp
186	ev_time (void)	279	ev_time (void)
187	{	280	{
188	#if EV_USE_REALTIME	281	#if EV_USE_REALTIME
189	struct timespec ts;	282	struct timespec ts;
190	clock_gettime (CLOCK_REALTIME, &ts);	283	clock_gettime (CLOCK_REALTIME, &ts);
…		…
209	#endif	302	#endif
210		303
211	return ev_time ();	304	return ev_time ();
212	}	305	}
213		306
		307	#if EV_MULTIPLICITY
214	ev_tstamp	308	ev_tstamp
215	ev_now (EV_P)	309	ev_now (EV_P)
216	{	310	{
217	return rt_now;	311	return ev_rt_now;
218	}	312	}
		313	#endif
219		314
220	#define array_roundsize(base,n) ((n) \| 4 & ~3)	315	#define array_roundsize(type,n) (((n) \| 4) & ~3)
221		316
222	#define array_needsize(base,cur,cnt,init) \	317	#define array_needsize(type,base,cur,cnt,init) \
223	if (expect_false ((cnt) > cur)) \	318	if (expect_false ((cnt) > cur)) \
224	{ \	319	{ \
225	int newcnt = cur; \	320	int newcnt = cur; \
226	do \	321	do \
227	{ \	322	{ \
228	newcnt = array_roundsize (base, newcnt << 1); \	323	newcnt = array_roundsize (type, newcnt << 1); \
229	} \	324	} \
230	while ((cnt) > newcnt); \	325	while ((cnt) > newcnt); \
231	\	326	\
232	base = realloc (base, sizeof (base) (newcnt)); \	327	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
233	init (base + cur, newcnt - cur); \	328	init (base + cur, newcnt - cur); \
234	cur = newcnt; \	329	cur = newcnt; \
235	}	330	}
		331
		332	#define array_slim(type,stem) \
		333	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		334	{ \
		335	stem ## max = array_roundsize (stem ## cnt >> 1); \
		336	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		337	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		338	}
		339
		340	#define array_free(stem, idx) \
		341	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
236		342
237	/*****************************************************************************/	343	/*****************************************************************************/
238		344
239	static void	345	static void
240	anfds_init (ANFD *base, int count)	346	anfds_init (ANFD *base, int count)
…		…
247		353
248	++base;	354	++base;
249	}	355	}
250	}	356	}
251		357
252	static void	358	void
253	event (EV_P_ W w, int events)	359	ev_feed_event (EV_P_ void *w, int revents)
254	{	360	{
		361	W w_ = (W)w;
		362
255	if (w->pending)	363	if (w_->pending)
256	{	364	{
257	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	365	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
258	return;	366	return;
259	}	367	}
260		368
261	w->pending = ++pendingcnt [ABSPRI (w)];	369	w_->pending = ++pendingcnt [ABSPRI (w_)];
262	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	370	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
263	pendings [ABSPRI (w)][w->pending - 1].w = w;	371	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
264	pendings [ABSPRI (w)][w->pending - 1].events = events;	372	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
265	}	373	}
266		374
267	static void	375	static void
268	queue_events (EV_P_ W *events, int eventcnt, int type)	376	queue_events (EV_P_ W *events, int eventcnt, int type)
269	{	377	{
270	int i;	378	int i;
271		379
272	for (i = 0; i < eventcnt; ++i)	380	for (i = 0; i < eventcnt; ++i)
273	event (EV_A_ events [i], type);	381	ev_feed_event (EV_A_ events [i], type);
274	}	382	}
275		383
276	static void	384	inline void
277	fd_event (EV_P_ int fd, int events)	385	fd_event (EV_P_ int fd, int revents)
278	{	386	{
279	ANFD *anfd = anfds + fd;	387	ANFD *anfd = anfds + fd;
280	struct ev_io *w;	388	struct ev_io *w;
281		389
282	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	390	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
283	{	391	{
284	int ev = w->events & events;	392	int ev = w->events & revents;
285		393
286	if (ev)	394	if (ev)
287	event (EV_A_ (W)w, ev);	395	ev_feed_event (EV_A_ (W)w, ev);
288	}	396	}
		397	}
		398
		399	void
		400	ev_feed_fd_event (EV_P_ int fd, int revents)
		401	{
		402	fd_event (EV_A_ fd, revents);
289	}	403	}
290		404
291	/*****************************************************************************/	405	/*****************************************************************************/
292		406
293	static void	407	static void
…		…
304	int events = 0;	418	int events = 0;
305		419
306	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	420	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
307	events \|= w->events;	421	events \|= w->events;
308		422
		423	#if EV_SELECT_IS_WINSOCKET
		424	if (events)
		425	{
		426	unsigned long argp;
		427	anfd->handle = _get_osfhandle (fd);
		428	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		429	}
		430	#endif
		431
309	anfd->reify = 0;	432	anfd->reify = 0;
310		433
311	if (anfd->events != events)
312	{
313	method_modify (EV_A_ fd, anfd->events, events);	434	method_modify (EV_A_ fd, anfd->events, events);
314	anfd->events = events;	435	anfd->events = events;
315	}
316	}	436	}
317		437
318	fdchangecnt = 0;	438	fdchangecnt = 0;
319	}	439	}
320		440
321	static void	441	static void
322	fd_change (EV_P_ int fd)	442	fd_change (EV_P_ int fd)
323	{	443	{
324	if (anfds [fd].reify \|\| fdchangecnt < 0)	444	if (anfds [fd].reify)
325	return;	445	return;
326		446
327	anfds [fd].reify = 1;	447	anfds [fd].reify = 1;
328		448
329	++fdchangecnt;	449	++fdchangecnt;
330	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	450	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
331	fdchanges [fdchangecnt - 1] = fd;	451	fdchanges [fdchangecnt - 1] = fd;
332	}	452	}
333		453
334	static void	454	static void
335	fd_kill (EV_P_ int fd)	455	fd_kill (EV_P_ int fd)
…		…
337	struct ev_io *w;	457	struct ev_io *w;
338		458
339	while ((w = (struct ev_io *)anfds [fd].head))	459	while ((w = (struct ev_io *)anfds [fd].head))
340	{	460	{
341	ev_io_stop (EV_A_ w);	461	ev_io_stop (EV_A_ w);
342	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	462	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
343	}	463	}
		464	}
		465
		466	static int
		467	fd_valid (int fd)
		468	{
		469	#ifdef _WIN32
		470	return _get_osfhandle (fd) != -1;
		471	#else
		472	return fcntl (fd, F_GETFD) != -1;
		473	#endif
344	}	474	}
345		475
346	/* called on EBADF to verify fds */	476	/* called on EBADF to verify fds */
347	static void	477	static void
348	fd_ebadf (EV_P)	478	fd_ebadf (EV_P)
349	{	479	{
350	int fd;	480	int fd;
351		481
352	for (fd = 0; fd < anfdmax; ++fd)	482	for (fd = 0; fd < anfdmax; ++fd)
353	if (anfds [fd].events)	483	if (anfds [fd].events)
354	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	484	if (!fd_valid (fd) == -1 && errno == EBADF)
355	fd_kill (EV_A_ fd);	485	fd_kill (EV_A_ fd);
356	}	486	}
357		487
358	/* called on ENOMEM in select/poll to kill some fds and retry */	488	/* called on ENOMEM in select/poll to kill some fds and retry */
359	static void	489	static void
…		…
362	int fd;	492	int fd;
363		493
364	for (fd = anfdmax; fd--; )	494	for (fd = anfdmax; fd--; )
365	if (anfds [fd].events)	495	if (anfds [fd].events)
366	{	496	{
367	close (fd);
368	fd_kill (EV_A_ fd);	497	fd_kill (EV_A_ fd);
369	return;	498	return;
370	}	499	}
371	}	500	}
372		501
373	/* susually called after fork if method needs to re-arm all fds from scratch */	502	/* usually called after fork if method needs to re-arm all fds from scratch */
374	static void	503	static void
375	fd_rearm_all (EV_P)	504	fd_rearm_all (EV_P)
376	{	505	{
377	int fd;	506	int fd;
378		507
…		…
426		555
427	heap [k] = w;	556	heap [k] = w;
428	((W)heap [k])->active = k + 1;	557	((W)heap [k])->active = k + 1;
429	}	558	}
430		559
		560	inline void
		561	adjustheap (WT *heap, int N, int k)
		562	{
		563	upheap (heap, k);
		564	downheap (heap, N, k);
		565	}
		566
431	/*****************************************************************************/	567	/*****************************************************************************/
432		568
433	typedef struct	569	typedef struct
434	{	570	{
435	struct ev_watcher_list *head;	571	WL head;
436	sig_atomic_t volatile gotsig;	572	sig_atomic_t volatile gotsig;
437	} ANSIG;	573	} ANSIG;
438		574
439	static ANSIG *signals;	575	static ANSIG *signals;
440	static int signalmax;	576	static int signalmax;
…		…
456	}	592	}
457		593
458	static void	594	static void
459	sighandler (int signum)	595	sighandler (int signum)
460	{	596	{
		597	#if _WIN32
		598	signal (signum, sighandler);
		599	#endif
		600
461	signals [signum - 1].gotsig = 1;	601	signals [signum - 1].gotsig = 1;
462		602
463	if (!gotsig)	603	if (!gotsig)
464	{	604	{
465	int old_errno = errno;	605	int old_errno = errno;
…		…
467	write (sigpipe [1], &signum, 1);	607	write (sigpipe [1], &signum, 1);
468	errno = old_errno;	608	errno = old_errno;
469	}	609	}
470	}	610	}
471		611
		612	void
		613	ev_feed_signal_event (EV_P_ int signum)
		614	{
		615	WL w;
		616
		617	#if EV_MULTIPLICITY
		618	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		619	#endif
		620
		621	--signum;
		622
		623	if (signum < 0 \|\| signum >= signalmax)
		624	return;
		625
		626	signals [signum].gotsig = 0;
		627
		628	for (w = signals [signum].head; w; w = w->next)
		629	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		630	}
		631
472	static void	632	static void
473	sigcb (EV_P_ struct ev_io *iow, int revents)	633	sigcb (EV_P_ struct ev_io *iow, int revents)
474	{	634	{
475	struct ev_watcher_list *w;
476	int signum;	635	int signum;
477		636
478	read (sigpipe [0], &revents, 1);	637	read (sigpipe [0], &revents, 1);
479	gotsig = 0;	638	gotsig = 0;
480		639
481	for (signum = signalmax; signum--; )	640	for (signum = signalmax; signum--; )
482	if (signals [signum].gotsig)	641	if (signals [signum].gotsig)
483	{	642	ev_feed_signal_event (EV_A_ signum + 1);
484	signals [signum].gotsig = 0;	643	}
485		644
486	for (w = signals [signum].head; w; w = w->next)	645	inline void
487	event (EV_A_ (W)w, EV_SIGNAL);	646	fd_intern (int fd)
488	}	647	{
		648	#ifdef _WIN32
		649	int arg = 1;
		650	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		651	#else
		652	fcntl (fd, F_SETFD, FD_CLOEXEC);
		653	fcntl (fd, F_SETFL, O_NONBLOCK);
		654	#endif
489	}	655	}
490		656
491	static void	657	static void
492	siginit (EV_P)	658	siginit (EV_P)
493	{	659	{
494	#ifndef WIN32	660	fd_intern (sigpipe [0]);
495	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	661	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		662
503	ev_io_set (&sigev, sigpipe [0], EV_READ);	663	ev_io_set (&sigev, sigpipe [0], EV_READ);
504	ev_io_start (EV_A_ &sigev);	664	ev_io_start (EV_A_ &sigev);
505	ev_unref (EV_A); /* child watcher should not keep loop alive */	665	ev_unref (EV_A); /* child watcher should not keep loop alive */
506	}	666	}
507		667
508	/*****************************************************************************/	668	/*****************************************************************************/
509		669
510	#ifndef WIN32
511
512	static struct ev_child *childs [PID_HASHSIZE];	670	static struct ev_child *childs [PID_HASHSIZE];
		671
		672	#ifndef _WIN32
		673
513	static struct ev_signal childev;	674	static struct ev_signal childev;
514		675
515	#ifndef WCONTINUED	676	#ifndef WCONTINUED
516	# define WCONTINUED 0	677	# define WCONTINUED 0
517	#endif	678	#endif
…		…
525	if (w->pid == pid \|\| !w->pid)	686	if (w->pid == pid \|\| !w->pid)
526	{	687	{
527	ev_priority (w) = ev_priority (sw); /* need to do it now */	688	ev_priority (w) = ev_priority (sw); /* need to do it now */
528	w->rpid = pid;	689	w->rpid = pid;
529	w->rstatus = status;	690	w->rstatus = status;
530	event (EV_A_ (W)w, EV_CHILD);	691	ev_feed_event (EV_A_ (W)w, EV_CHILD);
531	}	692	}
532	}	693	}
533		694
534	static void	695	static void
535	childcb (EV_P_ struct ev_signal *sw, int revents)	696	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
537	int pid, status;	698	int pid, status;
538		699
539	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	700	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
540	{	701	{
541	/* make sure we are called again until all childs have been reaped */	702	/* make sure we are called again until all childs have been reaped */
542	event (EV_A_ (W)sw, EV_SIGNAL);	703	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
543		704
544	child_reap (EV_A_ sw, pid, pid, status);	705	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 */	706	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
546	}	707	}
547	}	708	}
…		…
577		738
578	/* return true if we are running with elevated privileges and should ignore env variables */	739	/* return true if we are running with elevated privileges and should ignore env variables */
579	static int	740	static int
580	enable_secure (void)	741	enable_secure (void)
581	{	742	{
582	#ifdef WIN32	743	#ifdef _WIN32
583	return 0;	744	return 0;
584	#else	745	#else
585	return getuid () != geteuid ()	746	return getuid () != geteuid ()
586	\|\| getgid () != getegid ();	747	\|\| getgid () != getegid ();
587	#endif	748	#endif
…		…
592	{	753	{
593	return method;	754	return method;
594	}	755	}
595		756
596	static void	757	static void
597	loop_init (EV_P_ int methods)	758	loop_init (EV_P_ unsigned int flags)
598	{	759	{
599	if (!method)	760	if (!method)
600	{	761	{
601	#if EV_USE_MONOTONIC	762	#if EV_USE_MONOTONIC
602	{	763	{
…		…
604	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	765	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
605	have_monotonic = 1;	766	have_monotonic = 1;
606	}	767	}
607	#endif	768	#endif
608		769
609	rt_now = ev_time ();	770	ev_rt_now = ev_time ();
610	mn_now = get_clock ();	771	mn_now = get_clock ();
611	now_floor = mn_now;	772	now_floor = mn_now;
612	rtmn_diff = rt_now - mn_now;	773	rtmn_diff = ev_rt_now - mn_now;
613		774
614	if (methods == EVMETHOD_AUTO)	775	if (!(flags & EVMETHOD_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
615	if (!enable_secure () && getenv ("LIBEV_METHODS"))
616	methods = atoi (getenv ("LIBEV_METHODS"));	776	flags = atoi (getenv ("LIBEV_FLAGS"));
617	else	777
618	methods = EVMETHOD_ANY;	778	if (!(flags & 0x0000ffff))
		779	flags \|= 0x0000ffff;
619		780
620	method = 0;	781	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	782	#if EV_USE_KQUEUE
625	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	783	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
626	#endif	784	#endif
627	#if EV_USE_EPOLL	785	#if EV_USE_EPOLL
628	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	786	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
629	#endif	787	#endif
630	#if EV_USE_POLL	788	#if EV_USE_POLL
631	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	789	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
632	#endif	790	#endif
633	#if EV_USE_SELECT	791	#if EV_USE_SELECT
634	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	792	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
635	#endif	793	#endif
		794
		795	ev_init (&sigev, sigcb);
		796	ev_set_priority (&sigev, EV_MAXPRI);
636	}	797	}
637	}	798	}
638		799
639	void	800	void
640	loop_destroy (EV_P)	801	loop_destroy (EV_P)
641	{	802	{
642	#if EV_USE_WIN32	803	int i;
643	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	804
644	#endif
645	#if EV_USE_KQUEUE	805	#if EV_USE_KQUEUE
646	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	806	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
647	#endif	807	#endif
648	#if EV_USE_EPOLL	808	#if EV_USE_EPOLL
649	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	809	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
…		…
653	#endif	813	#endif
654	#if EV_USE_SELECT	814	#if EV_USE_SELECT
655	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	815	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
656	#endif	816	#endif
657		817
		818	for (i = NUMPRI; i--; )
		819	array_free (pending, [i]);
		820
		821	/* have to use the microsoft-never-gets-it-right macro */
		822	array_free (fdchange, EMPTY);
		823	array_free (timer, EMPTY);
		824	#if EV_PERIODICS
		825	array_free (periodic, EMPTY);
		826	#endif
		827	array_free (idle, EMPTY);
		828	array_free (prepare, EMPTY);
		829	array_free (check, EMPTY);
		830
658	method = 0;	831	method = 0;
659	/TODO/
660	}	832	}
661		833
662	void	834	static void
663	loop_fork (EV_P)	835	loop_fork (EV_P)
664	{	836	{
665	/TODO/
666	#if EV_USE_EPOLL	837	#if EV_USE_EPOLL
667	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	838	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
668	#endif	839	#endif
669	#if EV_USE_KQUEUE	840	#if EV_USE_KQUEUE
670	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	841	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
671	#endif	842	#endif
		843
		844	if (ev_is_active (&sigev))
		845	{
		846	/* default loop */
		847
		848	ev_ref (EV_A);
		849	ev_io_stop (EV_A_ &sigev);
		850	close (sigpipe [0]);
		851	close (sigpipe [1]);
		852
		853	while (pipe (sigpipe))
		854	syserr ("(libev) error creating pipe");
		855
		856	siginit (EV_A);
		857	}
		858
		859	postfork = 0;
672	}	860	}
673		861
674	#if EV_MULTIPLICITY	862	#if EV_MULTIPLICITY
675	struct ev_loop *	863	struct ev_loop *
676	ev_loop_new (int methods)	864	ev_loop_new (unsigned int flags)
677	{	865	{
678	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));	866	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
679		867
		868	memset (loop, 0, sizeof (struct ev_loop));
		869
680	loop_init (EV_A_ methods);	870	loop_init (EV_A_ flags);
681		871
682	if (ev_method (EV_A))	872	if (ev_method (EV_A))
683	return loop;	873	return loop;
684		874
685	return 0;	875	return 0;
…		…
687		877
688	void	878	void
689	ev_loop_destroy (EV_P)	879	ev_loop_destroy (EV_P)
690	{	880	{
691	loop_destroy (EV_A);	881	loop_destroy (EV_A);
692	free (loop);	882	ev_free (loop);
693	}	883	}
694		884
695	void	885	void
696	ev_loop_fork (EV_P)	886	ev_loop_fork (EV_P)
697	{	887	{
698	loop_fork (EV_A);	888	postfork = 1;
699	}	889	}
700		890
701	#endif	891	#endif
702		892
703	#if EV_MULTIPLICITY	893	#if EV_MULTIPLICITY
704	struct ev_loop default_loop_struct;
705	static struct ev_loop *default_loop;
706
707	struct ev_loop *	894	struct ev_loop *
708	#else	895	#else
709	static int default_loop;
710
711	int	896	int
712	#endif	897	#endif
713	ev_default_loop (int methods)	898	ev_default_loop (unsigned int flags)
714	{	899	{
715	if (sigpipe [0] == sigpipe [1])	900	if (sigpipe [0] == sigpipe [1])
716	if (pipe (sigpipe))	901	if (pipe (sigpipe))
717	return 0;	902	return 0;
718		903
…		…
722	struct ev_loop *loop = default_loop = &default_loop_struct;	907	struct ev_loop *loop = default_loop = &default_loop_struct;
723	#else	908	#else
724	default_loop = 1;	909	default_loop = 1;
725	#endif	910	#endif
726		911
727	loop_init (EV_A_ methods);	912	loop_init (EV_A_ flags);
728		913
729	if (ev_method (EV_A))	914	if (ev_method (EV_A))
730	{	915	{
731	ev_watcher_init (&sigev, sigcb);
732	ev_set_priority (&sigev, EV_MAXPRI);
733	siginit (EV_A);	916	siginit (EV_A);
734		917
735	#ifndef WIN32	918	#ifndef _WIN32
736	ev_signal_init (&childev, childcb, SIGCHLD);	919	ev_signal_init (&childev, childcb, SIGCHLD);
737	ev_set_priority (&childev, EV_MAXPRI);	920	ev_set_priority (&childev, EV_MAXPRI);
738	ev_signal_start (EV_A_ &childev);	921	ev_signal_start (EV_A_ &childev);
739	ev_unref (EV_A); /* child watcher should not keep loop alive */	922	ev_unref (EV_A); /* child watcher should not keep loop alive */
740	#endif	923	#endif
…		…
751	{	934	{
752	#if EV_MULTIPLICITY	935	#if EV_MULTIPLICITY
753	struct ev_loop *loop = default_loop;	936	struct ev_loop *loop = default_loop;
754	#endif	937	#endif
755		938
		939	#ifndef _WIN32
756	ev_ref (EV_A); /* child watcher */	940	ev_ref (EV_A); /* child watcher */
757	ev_signal_stop (EV_A_ &childev);	941	ev_signal_stop (EV_A_ &childev);
		942	#endif
758		943
759	ev_ref (EV_A); /* signal watcher */	944	ev_ref (EV_A); /* signal watcher */
760	ev_io_stop (EV_A_ &sigev);	945	ev_io_stop (EV_A_ &sigev);
761		946
762	close (sigpipe [0]); sigpipe [0] = 0;	947	close (sigpipe [0]); sigpipe [0] = 0;
…		…
770	{	955	{
771	#if EV_MULTIPLICITY	956	#if EV_MULTIPLICITY
772	struct ev_loop *loop = default_loop;	957	struct ev_loop *loop = default_loop;
773	#endif	958	#endif
774		959
775	loop_fork (EV_A);	960	if (method)
776		961	postfork = 1;
777	ev_io_stop (EV_A_ &sigev);
778	close (sigpipe [0]);
779	close (sigpipe [1]);
780	pipe (sigpipe);
781
782	ev_ref (EV_A); /* signal watcher */
783	siginit (EV_A);
784	}	962	}
785		963
786	/*****************************************************************************/	964	/*****************************************************************************/
		965
		966	static int
		967	any_pending (EV_P)
		968	{
		969	int pri;
		970
		971	for (pri = NUMPRI; pri--; )
		972	if (pendingcnt [pri])
		973	return 1;
		974
		975	return 0;
		976	}
787		977
788	static void	978	static void
789	call_pending (EV_P)	979	call_pending (EV_P)
790	{	980	{
791	int pri;	981	int pri;
…		…
796	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	986	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
797		987
798	if (p->w)	988	if (p->w)
799	{	989	{
800	p->w->pending = 0;	990	p->w->pending = 0;
801		991	EV_CB_INVOKE (p->w, p->events);
802	((void (*)(EV_P_ W, int))&p->w->cb) (EV_A_ p->w, p->events);
803	}	992	}
804	}	993	}
805	}	994	}
806		995
807	static void	996	static void
…		…
815		1004
816	/* first reschedule or stop timer */	1005	/* first reschedule or stop timer */
817	if (w->repeat)	1006	if (w->repeat)
818	{	1007	{
819	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1008	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1009
820	((WT)w)->at = mn_now + w->repeat;	1010	((WT)w)->at += w->repeat;
		1011	if (((WT)w)->at < mn_now)
		1012	((WT)w)->at = mn_now;
		1013
821	downheap ((WT *)timers, timercnt, 0);	1014	downheap ((WT *)timers, timercnt, 0);
822	}	1015	}
823	else	1016	else
824	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1017	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
825		1018
826	event (EV_A_ (W)w, EV_TIMEOUT);	1019	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
827	}	1020	}
828	}	1021	}
829		1022
		1023	#if EV_PERIODICS
830	static void	1024	static void
831	periodics_reify (EV_P)	1025	periodics_reify (EV_P)
832	{	1026	{
833	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1027	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
834	{	1028	{
835	struct ev_periodic *w = periodics [0];	1029	struct ev_periodic *w = periodics [0];
836		1030
837	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1031	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
838		1032
839	/* first reschedule or stop timer */	1033	/* first reschedule or stop timer */
840	if (w->interval)	1034	if (w->reschedule_cb)
841	{	1035	{
		1036	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1037	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1038	downheap ((WT *)periodics, periodiccnt, 0);
		1039	}
		1040	else if (w->interval)
		1041	{
842	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1042	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
843	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1043	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
844	downheap ((WT *)periodics, periodiccnt, 0);	1044	downheap ((WT *)periodics, periodiccnt, 0);
845	}	1045	}
846	else	1046	else
847	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1047	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
848		1048
849	event (EV_A_ (W)w, EV_PERIODIC);	1049	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
850	}	1050	}
851	}	1051	}
852		1052
853	static void	1053	static void
854	periodics_reschedule (EV_P)	1054	periodics_reschedule (EV_P)
…		…
858	/* adjust periodics after time jump */	1058	/* adjust periodics after time jump */
859	for (i = 0; i < periodiccnt; ++i)	1059	for (i = 0; i < periodiccnt; ++i)
860	{	1060	{
861	struct ev_periodic *w = periodics [i];	1061	struct ev_periodic *w = periodics [i];
862		1062
		1063	if (w->reschedule_cb)
		1064	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
863	if (w->interval)	1065	else if (w->interval)
864	{
865	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1066	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
866
867	if (fabs (diff) >= 1e-4)
868	{
869	ev_periodic_stop (EV_A_ w);
870	ev_periodic_start (EV_A_ w);
871
872	i = 0; /* restart loop, inefficient, but time jumps should be rare */
873	}
874	}
875	}	1067	}
		1068
		1069	/* now rebuild the heap */
		1070	for (i = periodiccnt >> 1; i--; )
		1071	downheap ((WT *)periodics, periodiccnt, i);
876	}	1072	}
		1073	#endif
877		1074
878	inline int	1075	inline int
879	time_update_monotonic (EV_P)	1076	time_update_monotonic (EV_P)
880	{	1077	{
881	mn_now = get_clock ();	1078	mn_now = get_clock ();
882		1079
883	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1080	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
884	{	1081	{
885	rt_now = rtmn_diff + mn_now;	1082	ev_rt_now = rtmn_diff + mn_now;
886	return 0;	1083	return 0;
887	}	1084	}
888	else	1085	else
889	{	1086	{
890	now_floor = mn_now;	1087	now_floor = mn_now;
891	rt_now = ev_time ();	1088	ev_rt_now = ev_time ();
892	return 1;	1089	return 1;
893	}	1090	}
894	}	1091	}
895		1092
896	static void	1093	static void
…		…
905	{	1102	{
906	ev_tstamp odiff = rtmn_diff;	1103	ev_tstamp odiff = rtmn_diff;
907		1104
908	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1105	for (i = 4; --i; ) /* loop a few times, before making important decisions */
909	{	1106	{
910	rtmn_diff = rt_now - mn_now;	1107	rtmn_diff = ev_rt_now - mn_now;
911		1108
912	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1109	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
913	return; /* all is well */	1110	return; /* all is well */
914		1111
915	rt_now = ev_time ();	1112	ev_rt_now = ev_time ();
916	mn_now = get_clock ();	1113	mn_now = get_clock ();
917	now_floor = mn_now;	1114	now_floor = mn_now;
918	}	1115	}
919		1116
		1117	# if EV_PERIODICS
920	periodics_reschedule (EV_A);	1118	periodics_reschedule (EV_A);
		1119	# endif
921	/* no timer adjustment, as the monotonic clock doesn't jump */	1120	/* no timer adjustment, as the monotonic clock doesn't jump */
922	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1121	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
923	}	1122	}
924	}	1123	}
925	else	1124	else
926	#endif	1125	#endif
927	{	1126	{
928	rt_now = ev_time ();	1127	ev_rt_now = ev_time ();
929		1128
930	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1129	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
931	{	1130	{
		1131	#if EV_PERIODICS
932	periodics_reschedule (EV_A);	1132	periodics_reschedule (EV_A);
		1133	#endif
933		1134
934	/* adjust timers. this is easy, as the offset is the same for all */	1135	/* adjust timers. this is easy, as the offset is the same for all */
935	for (i = 0; i < timercnt; ++i)	1136	for (i = 0; i < timercnt; ++i)
936	((WT)timers [i])->at += rt_now - mn_now;	1137	((WT)timers [i])->at += ev_rt_now - mn_now;
937	}	1138	}
938		1139
939	mn_now = rt_now;	1140	mn_now = ev_rt_now;
940	}	1141	}
941	}	1142	}
942		1143
943	void	1144	void
944	ev_ref (EV_P)	1145	ev_ref (EV_P)
…		…
967	{	1168	{
968	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1169	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
969	call_pending (EV_A);	1170	call_pending (EV_A);
970	}	1171	}
971		1172
		1173	/* we might have forked, so reify kernel state if necessary */
		1174	if (expect_false (postfork))
		1175	loop_fork (EV_A);
		1176
972	/* update fd-related kernel structures */	1177	/* update fd-related kernel structures */
973	fd_reify (EV_A);	1178	fd_reify (EV_A);
974		1179
975	/* calculate blocking time */	1180	/* calculate blocking time */
976		1181
977	/* we only need this for !monotonic clockor timers, but as we basically	1182	/* we only need this for !monotonic clock or timers, but as we basically
978	always have timers, we just calculate it always */	1183	always have timers, we just calculate it always */
979	#if EV_USE_MONOTONIC	1184	#if EV_USE_MONOTONIC
980	if (expect_true (have_monotonic))	1185	if (expect_true (have_monotonic))
981	time_update_monotonic (EV_A);	1186	time_update_monotonic (EV_A);
982	else	1187	else
983	#endif	1188	#endif
984	{	1189	{
985	rt_now = ev_time ();	1190	ev_rt_now = ev_time ();
986	mn_now = rt_now;	1191	mn_now = ev_rt_now;
987	}	1192	}
988		1193
989	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1194	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
990	block = 0.;	1195	block = 0.;
991	else	1196	else
…		…
996	{	1201	{
997	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1202	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
998	if (block > to) block = to;	1203	if (block > to) block = to;
999	}	1204	}
1000		1205
		1206	#if EV_PERIODICS
1001	if (periodiccnt)	1207	if (periodiccnt)
1002	{	1208	{
1003	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1209	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
1004	if (block > to) block = to;	1210	if (block > to) block = to;
1005	}	1211	}
		1212	#endif
1006		1213
1007	if (block < 0.) block = 0.;	1214	if (block < 0.) block = 0.;
1008	}	1215	}
1009		1216
1010	method_poll (EV_A_ block);	1217	method_poll (EV_A_ block);
1011		1218
1012	/* update rt_now, do magic */	1219	/* update ev_rt_now, do magic */
1013	time_update (EV_A);	1220	time_update (EV_A);
1014		1221
1015	/* queue pending timers and reschedule them */	1222	/* queue pending timers and reschedule them */
1016	timers_reify (EV_A); /* relative timers called last */	1223	timers_reify (EV_A); /* relative timers called last */
		1224	#if EV_PERIODICS
1017	periodics_reify (EV_A); /* absolute timers called first */	1225	periodics_reify (EV_A); /* absolute timers called first */
		1226	#endif
1018		1227
1019	/* queue idle watchers unless io or timers are pending */	1228	/* queue idle watchers unless io or timers are pending */
1020	if (!pendingcnt)	1229	if (idlecnt && !any_pending (EV_A))
1021	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1230	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1022		1231
1023	/* queue check watchers, to be executed first */	1232	/* queue check watchers, to be executed first */
1024	if (checkcnt)	1233	if (checkcnt)
1025	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1234	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
…		…
1100	return;	1309	return;
1101		1310
1102	assert (("ev_io_start called with negative fd", fd >= 0));	1311	assert (("ev_io_start called with negative fd", fd >= 0));
1103		1312
1104	ev_start (EV_A_ (W)w, 1);	1313	ev_start (EV_A_ (W)w, 1);
1105	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1314	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1106	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1315	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1107		1316
1108	fd_change (EV_A_ fd);	1317	fd_change (EV_A_ fd);
1109	}	1318	}
1110		1319
…		…
1113	{	1322	{
1114	ev_clear_pending (EV_A_ (W)w);	1323	ev_clear_pending (EV_A_ (W)w);
1115	if (!ev_is_active (w))	1324	if (!ev_is_active (w))
1116	return;	1325	return;
1117		1326
		1327	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1328
1118	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1329	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1119	ev_stop (EV_A_ (W)w);	1330	ev_stop (EV_A_ (W)w);
1120		1331
1121	fd_change (EV_A_ w->fd);	1332	fd_change (EV_A_ w->fd);
1122	}	1333	}
…		…
1130	((WT)w)->at += mn_now;	1341	((WT)w)->at += mn_now;
1131		1342
1132	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1343	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1133		1344
1134	ev_start (EV_A_ (W)w, ++timercnt);	1345	ev_start (EV_A_ (W)w, ++timercnt);
1135	array_needsize (timers, timermax, timercnt, );	1346	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1136	timers [timercnt - 1] = w;	1347	timers [timercnt - 1] = w;
1137	upheap ((WT *)timers, timercnt - 1);	1348	upheap ((WT *)timers, timercnt - 1);
1138		1349
1139	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1350	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1140	}	1351	}
…		…
1149	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1360	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1150		1361
1151	if (((W)w)->active < timercnt--)	1362	if (((W)w)->active < timercnt--)
1152	{	1363	{
1153	timers [((W)w)->active - 1] = timers [timercnt];	1364	timers [((W)w)->active - 1] = timers [timercnt];
1154	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1365	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1155	}	1366	}
1156		1367
1157	((WT)w)->at = w->repeat;	1368	((WT)w)->at -= mn_now;
1158		1369
1159	ev_stop (EV_A_ (W)w);	1370	ev_stop (EV_A_ (W)w);
1160	}	1371	}
1161		1372
1162	void	1373	void
…		…
1165	if (ev_is_active (w))	1376	if (ev_is_active (w))
1166	{	1377	{
1167	if (w->repeat)	1378	if (w->repeat)
1168	{	1379	{
1169	((WT)w)->at = mn_now + w->repeat;	1380	((WT)w)->at = mn_now + w->repeat;
1170	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1381	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1171	}	1382	}
1172	else	1383	else
1173	ev_timer_stop (EV_A_ w);	1384	ev_timer_stop (EV_A_ w);
1174	}	1385	}
1175	else if (w->repeat)	1386	else if (w->repeat)
1176	ev_timer_start (EV_A_ w);	1387	ev_timer_start (EV_A_ w);
1177	}	1388	}
1178		1389
		1390	#if EV_PERIODICS
1179	void	1391	void
1180	ev_periodic_start (EV_P_ struct ev_periodic *w)	1392	ev_periodic_start (EV_P_ struct ev_periodic *w)
1181	{	1393	{
1182	if (ev_is_active (w))	1394	if (ev_is_active (w))
1183	return;	1395	return;
1184		1396
		1397	if (w->reschedule_cb)
		1398	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1399	else if (w->interval)
		1400	{
1185	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1401	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1186
1187	/* this formula differs from the one in periodic_reify because we do not always round up */	1402	/* this formula differs from the one in periodic_reify because we do not always round up */
1188	if (w->interval)
1189	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1403	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1404	}
1190		1405
1191	ev_start (EV_A_ (W)w, ++periodiccnt);	1406	ev_start (EV_A_ (W)w, ++periodiccnt);
1192	array_needsize (periodics, periodicmax, periodiccnt, );	1407	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1193	periodics [periodiccnt - 1] = w;	1408	periodics [periodiccnt - 1] = w;
1194	upheap ((WT *)periodics, periodiccnt - 1);	1409	upheap ((WT *)periodics, periodiccnt - 1);
1195		1410
1196	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1411	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1197	}	1412	}
…		…
1206	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1421	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1207		1422
1208	if (((W)w)->active < periodiccnt--)	1423	if (((W)w)->active < periodiccnt--)
1209	{	1424	{
1210	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1425	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1211	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1426	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1212	}	1427	}
1213		1428
1214	ev_stop (EV_A_ (W)w);	1429	ev_stop (EV_A_ (W)w);
1215	}	1430	}
1216		1431
1217	void	1432	void
		1433	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1434	{
		1435	/* TODO: use adjustheap and recalculation */
		1436	ev_periodic_stop (EV_A_ w);
		1437	ev_periodic_start (EV_A_ w);
		1438	}
		1439	#endif
		1440
		1441	void
1218	ev_idle_start (EV_P_ struct ev_idle *w)	1442	ev_idle_start (EV_P_ struct ev_idle *w)
1219	{	1443	{
1220	if (ev_is_active (w))	1444	if (ev_is_active (w))
1221	return;	1445	return;
1222		1446
1223	ev_start (EV_A_ (W)w, ++idlecnt);	1447	ev_start (EV_A_ (W)w, ++idlecnt);
1224	array_needsize (idles, idlemax, idlecnt, );	1448	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1225	idles [idlecnt - 1] = w;	1449	idles [idlecnt - 1] = w;
1226	}	1450	}
1227		1451
1228	void	1452	void
1229	ev_idle_stop (EV_P_ struct ev_idle *w)	1453	ev_idle_stop (EV_P_ struct ev_idle *w)
1230	{	1454	{
1231	ev_clear_pending (EV_A_ (W)w);	1455	ev_clear_pending (EV_A_ (W)w);
1232	if (ev_is_active (w))	1456	if (!ev_is_active (w))
1233	return;	1457	return;
1234		1458
1235	idles [((W)w)->active - 1] = idles [--idlecnt];	1459	idles [((W)w)->active - 1] = idles [--idlecnt];
1236	ev_stop (EV_A_ (W)w);	1460	ev_stop (EV_A_ (W)w);
1237	}	1461	}
…		…
1241	{	1465	{
1242	if (ev_is_active (w))	1466	if (ev_is_active (w))
1243	return;	1467	return;
1244		1468
1245	ev_start (EV_A_ (W)w, ++preparecnt);	1469	ev_start (EV_A_ (W)w, ++preparecnt);
1246	array_needsize (prepares, preparemax, preparecnt, );	1470	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1247	prepares [preparecnt - 1] = w;	1471	prepares [preparecnt - 1] = w;
1248	}	1472	}
1249		1473
1250	void	1474	void
1251	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1475	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1252	{	1476	{
1253	ev_clear_pending (EV_A_ (W)w);	1477	ev_clear_pending (EV_A_ (W)w);
1254	if (ev_is_active (w))	1478	if (!ev_is_active (w))
1255	return;	1479	return;
1256		1480
1257	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1481	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1258	ev_stop (EV_A_ (W)w);	1482	ev_stop (EV_A_ (W)w);
1259	}	1483	}
…		…
1263	{	1487	{
1264	if (ev_is_active (w))	1488	if (ev_is_active (w))
1265	return;	1489	return;
1266		1490
1267	ev_start (EV_A_ (W)w, ++checkcnt);	1491	ev_start (EV_A_ (W)w, ++checkcnt);
1268	array_needsize (checks, checkmax, checkcnt, );	1492	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1269	checks [checkcnt - 1] = w;	1493	checks [checkcnt - 1] = w;
1270	}	1494	}
1271		1495
1272	void	1496	void
1273	ev_check_stop (EV_P_ struct ev_check *w)	1497	ev_check_stop (EV_P_ struct ev_check *w)
1274	{	1498	{
1275	ev_clear_pending (EV_A_ (W)w);	1499	ev_clear_pending (EV_A_ (W)w);
1276	if (ev_is_active (w))	1500	if (!ev_is_active (w))
1277	return;	1501	return;
1278		1502
1279	checks [((W)w)->active - 1] = checks [--checkcnt];	1503	checks [((W)w)->active - 1] = checks [--checkcnt];
1280	ev_stop (EV_A_ (W)w);	1504	ev_stop (EV_A_ (W)w);
1281	}	1505	}
…		…
1294	return;	1518	return;
1295		1519
1296	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1520	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1297		1521
1298	ev_start (EV_A_ (W)w, 1);	1522	ev_start (EV_A_ (W)w, 1);
1299	array_needsize (signals, signalmax, w->signum, signals_init);	1523	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1300	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1524	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1301		1525
1302	if (!((WL)w)->next)	1526	if (!((WL)w)->next)
1303	{	1527	{
		1528	#if _WIN32
		1529	signal (w->signum, sighandler);
		1530	#else
1304	struct sigaction sa;	1531	struct sigaction sa;
1305	sa.sa_handler = sighandler;	1532	sa.sa_handler = sighandler;
1306	sigfillset (&sa.sa_mask);	1533	sigfillset (&sa.sa_mask);
1307	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1534	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1308	sigaction (w->signum, &sa, 0);	1535	sigaction (w->signum, &sa, 0);
		1536	#endif
1309	}	1537	}
1310	}	1538	}
1311		1539
1312	void	1540	void
1313	ev_signal_stop (EV_P_ struct ev_signal *w)	1541	ev_signal_stop (EV_P_ struct ev_signal *w)
…		…
1338		1566
1339	void	1567	void
1340	ev_child_stop (EV_P_ struct ev_child *w)	1568	ev_child_stop (EV_P_ struct ev_child *w)
1341	{	1569	{
1342	ev_clear_pending (EV_A_ (W)w);	1570	ev_clear_pending (EV_A_ (W)w);
1343	if (ev_is_active (w))	1571	if (!ev_is_active (w))
1344	return;	1572	return;
1345		1573
1346	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1574	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1347	ev_stop (EV_A_ (W)w);	1575	ev_stop (EV_A_ (W)w);
1348	}	1576	}
…		…
1363	void (cb)(int revents, void arg) = once->cb;	1591	void (cb)(int revents, void arg) = once->cb;
1364	void *arg = once->arg;	1592	void *arg = once->arg;
1365		1593
1366	ev_io_stop (EV_A_ &once->io);	1594	ev_io_stop (EV_A_ &once->io);
1367	ev_timer_stop (EV_A_ &once->to);	1595	ev_timer_stop (EV_A_ &once->to);
1368	free (once);	1596	ev_free (once);
1369		1597
1370	cb (revents, arg);	1598	cb (revents, arg);
1371	}	1599	}
1372		1600
1373	static void	1601	static void
…		…
1383	}	1611	}
1384		1612
1385	void	1613	void
1386	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1614	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1387	{	1615	{
1388	struct ev_once *once = malloc (sizeof (struct ev_once));	1616	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1389		1617
1390	if (!once)	1618	if (!once)
1391	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1619	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1392	else	1620	else
1393	{	1621	{
1394	once->cb = cb;	1622	once->cb = cb;
1395	once->arg = arg;	1623	once->arg = arg;
1396		1624
1397	ev_watcher_init (&once->io, once_cb_io);	1625	ev_init (&once->io, once_cb_io);
1398	if (fd >= 0)	1626	if (fd >= 0)
1399	{	1627	{
1400	ev_io_set (&once->io, fd, events);	1628	ev_io_set (&once->io, fd, events);
1401	ev_io_start (EV_A_ &once->io);	1629	ev_io_start (EV_A_ &once->io);
1402	}	1630	}
1403		1631
1404	ev_watcher_init (&once->to, once_cb_to);	1632	ev_init (&once->to, once_cb_to);
1405	if (timeout >= 0.)	1633	if (timeout >= 0.)
1406	{	1634	{
1407	ev_timer_set (&once->to, timeout, 0.);	1635	ev_timer_set (&once->to, timeout, 0.);
1408	ev_timer_start (EV_A_ &once->to);	1636	ev_timer_start (EV_A_ &once->to);
1409	}	1637	}
1410	}	1638	}
1411	}	1639	}
1412		1640
		1641	#ifdef __cplusplus
		1642	}
		1643	#endif
		1644

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Comparing libev/ev.c (file contents): Revision 1.63 by root, Sun Nov 4 22:03:17 2007 UTC vs. Revision 1.110 by root, Mon Nov 12 05:56:49 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.63 by root, Sun Nov 4 22:03:17 2007 UTC vs.
Revision 1.110 by root, Mon Nov 12 05:56:49 2007 UTC