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

Comparing libev/ev.c (file contents):
Revision 1.61 by root, Sun Nov 4 19:45:09 2007 UTC vs.
Revision 1.113 by root, Mon Nov 12 08:00:05 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
…		…
97	#ifndef EV_USE_REALTIME	119	#ifndef EV_USE_REALTIME
98	# define EV_USE_REALTIME 1	120	# define EV_USE_REALTIME 1
99	#endif	121	#endif
100		122
101	/**/	123	/**/
		124
		125	/* darwin simply cannot be helped */
		126	#ifdef __APPLE__
		127	# undef EV_USE_POLL
		128	# undef EV_USE_KQUEUE
		129	#endif
102		130
103	#ifndef CLOCK_MONOTONIC	131	#ifndef CLOCK_MONOTONIC
104	# undef EV_USE_MONOTONIC	132	# undef EV_USE_MONOTONIC
105	# define EV_USE_MONOTONIC 0	133	# define EV_USE_MONOTONIC 0
106	#endif	134	#endif
107		135
108	#ifndef CLOCK_REALTIME	136	#ifndef CLOCK_REALTIME
109	# undef EV_USE_REALTIME	137	# undef EV_USE_REALTIME
110	# define EV_USE_REALTIME 0	138	# define EV_USE_REALTIME 0
		139	#endif
		140
		141	#if EV_SELECT_IS_WINSOCKET
		142	# include <winsock.h>
111	#endif	143	#endif
112		144
113	/**/	145	/**/
114		146
115	#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) */
116	#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) */
117	#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 */
118	/#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 */
119		151
		152	#ifdef EV_H
		153	# include EV_H
		154	#else
120	#include "ev.h"	155	# include "ev.h"
		156	#endif
121		157
122	#if __GNUC__ >= 3	158	#if __GNUC__ >= 3
123	# define expect(expr,value) __builtin_expect ((expr),(value))	159	# define expect(expr,value) __builtin_expect ((expr),(value))
124	# define inline inline	160	# define inline inline
125	#else	161	#else
…		…
131	#define expect_true(expr) expect ((expr) != 0, 1)	167	#define expect_true(expr) expect ((expr) != 0, 1)
132		168
133	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	169	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
134	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	170	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
135		171
		172	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		173
136	typedef struct ev_watcher *W;	174	typedef struct ev_watcher *W;
137	typedef struct ev_watcher_list *WL;	175	typedef struct ev_watcher_list *WL;
138	typedef struct ev_watcher_time *WT;	176	typedef struct ev_watcher_time *WT;
139		177
140	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	178	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
141		179
		180	#ifdef _WIN32
		181	# include "ev_win32.c"
		182	#endif
		183
142	/*****************************************************************************/	184	/*****************************************************************************/
143		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
144	typedef struct	234	typedef struct
145	{	235	{
146	struct ev_watcher_list *head;	236	WL head;
147	unsigned char events;	237	unsigned char events;
148	unsigned char reify;	238	unsigned char reify;
		239	#if EV_SELECT_IS_WINSOCKET
		240	SOCKET handle;
		241	#endif
149	} ANFD;	242	} ANFD;
150		243
151	typedef struct	244	typedef struct
152	{	245	{
153	W w;	246	W w;
154	int events;	247	int events;
155	} ANPENDING;	248	} ANPENDING;
156		249
157	#if EV_MULTIPLICITY	250	#if EV_MULTIPLICITY
158		251
159	struct ev_loop	252	struct ev_loop
160	{	253	{
		254	ev_tstamp ev_rt_now;
		255	#define ev_rt_now ((loop)->ev_rt_now)
161	# define VAR(name,decl) decl;	256	#define VAR(name,decl) decl;
162	# include "ev_vars.h"	257	#include "ev_vars.h"
163	};
164	# undef VAR	258	#undef VAR
		259	};
165	# include "ev_wrap.h"	260	#include "ev_wrap.h"
		261
		262	struct ev_loop default_loop_struct;
		263	static struct ev_loop *default_loop;
166		264
167	#else	265	#else
168		266
		267	ev_tstamp ev_rt_now;
169	# define VAR(name,decl) static decl;	268	#define VAR(name,decl) static decl;
170	# include "ev_vars.h"	269	#include "ev_vars.h"
171	# undef VAR	270	#undef VAR
		271
		272	static int default_loop;
172		273
173	#endif	274	#endif
174		275
175	/*****************************************************************************/	276	/*****************************************************************************/
176		277
177	inline ev_tstamp	278	ev_tstamp
178	ev_time (void)	279	ev_time (void)
179	{	280	{
180	#if EV_USE_REALTIME	281	#if EV_USE_REALTIME
181	struct timespec ts;	282	struct timespec ts;
182	clock_gettime (CLOCK_REALTIME, &ts);	283	clock_gettime (CLOCK_REALTIME, &ts);
…		…
201	#endif	302	#endif
202		303
203	return ev_time ();	304	return ev_time ();
204	}	305	}
205		306
		307	#if EV_MULTIPLICITY
206	ev_tstamp	308	ev_tstamp
207	ev_now (EV_P)	309	ev_now (EV_P)
208	{	310	{
209	return rt_now;	311	return ev_rt_now;
210	}	312	}
		313	#endif
211		314
212	#define array_roundsize(base,n) ((n) \| 4 & ~3)	315	#define array_roundsize(type,n) (((n) \| 4) & ~3)
213		316
214	#define array_needsize(base,cur,cnt,init) \	317	#define array_needsize(type,base,cur,cnt,init) \
215	if (expect_false ((cnt) > cur)) \	318	if (expect_false ((cnt) > cur)) \
216	{ \	319	{ \
217	int newcnt = cur; \	320	int newcnt = cur; \
218	do \	321	do \
219	{ \	322	{ \
220	newcnt = array_roundsize (base, newcnt << 1); \	323	newcnt = array_roundsize (type, newcnt << 1); \
221	} \	324	} \
222	while ((cnt) > newcnt); \	325	while ((cnt) > newcnt); \
223	\	326	\
224	base = realloc (base, sizeof (base) (newcnt)); \	327	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
225	init (base + cur, newcnt - cur); \	328	init (base + cur, newcnt - cur); \
226	cur = newcnt; \	329	cur = newcnt; \
227	}	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;
228		342
229	/*****************************************************************************/	343	/*****************************************************************************/
230		344
231	static void	345	static void
232	anfds_init (ANFD *base, int count)	346	anfds_init (ANFD *base, int count)
…		…
239		353
240	++base;	354	++base;
241	}	355	}
242	}	356	}
243		357
244	static void	358	void
245	event (EV_P_ W w, int events)	359	ev_feed_event (EV_P_ void *w, int revents)
246	{	360	{
		361	W w_ = (W)w;
		362
247	if (w->pending)	363	if (w_->pending)
248	{	364	{
249	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	365	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
250	return;	366	return;
251	}	367	}
252		368
253	w->pending = ++pendingcnt [ABSPRI (w)];	369	w_->pending = ++pendingcnt [ABSPRI (w_)];
254	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));
255	pendings [ABSPRI (w)][w->pending - 1].w = w;	371	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
256	pendings [ABSPRI (w)][w->pending - 1].events = events;	372	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
257	}	373	}
258		374
259	static void	375	static void
260	queue_events (EV_P_ W *events, int eventcnt, int type)	376	queue_events (EV_P_ W *events, int eventcnt, int type)
261	{	377	{
262	int i;	378	int i;
263		379
264	for (i = 0; i < eventcnt; ++i)	380	for (i = 0; i < eventcnt; ++i)
265	event (EV_A_ events [i], type);	381	ev_feed_event (EV_A_ events [i], type);
266	}	382	}
267		383
268	static void	384	inline void
269	fd_event (EV_P_ int fd, int events)	385	fd_event (EV_P_ int fd, int revents)
270	{	386	{
271	ANFD *anfd = anfds + fd;	387	ANFD *anfd = anfds + fd;
272	struct ev_io *w;	388	struct ev_io *w;
273		389
274	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)
275	{	391	{
276	int ev = w->events & events;	392	int ev = w->events & revents;
277		393
278	if (ev)	394	if (ev)
279	event (EV_A_ (W)w, ev);	395	ev_feed_event (EV_A_ (W)w, ev);
280	}	396	}
		397	}
		398
		399	void
		400	ev_feed_fd_event (EV_P_ int fd, int revents)
		401	{
		402	fd_event (EV_A_ fd, revents);
281	}	403	}
282		404
283	/*****************************************************************************/	405	/*****************************************************************************/
284		406
285	static void	407	static void
…		…
296	int events = 0;	418	int events = 0;
297		419
298	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)
299	events \|= w->events;	421	events \|= w->events;
300		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
301	anfd->reify = 0;	432	anfd->reify = 0;
302		433
303	if (anfd->events != events)
304	{
305	method_modify (EV_A_ fd, anfd->events, events);	434	method_modify (EV_A_ fd, anfd->events, events);
306	anfd->events = events;	435	anfd->events = events;
307	}
308	}	436	}
309		437
310	fdchangecnt = 0;	438	fdchangecnt = 0;
311	}	439	}
312		440
313	static void	441	static void
314	fd_change (EV_P_ int fd)	442	fd_change (EV_P_ int fd)
315	{	443	{
316	if (anfds [fd].reify \|\| fdchangecnt < 0)	444	if (anfds [fd].reify)
317	return;	445	return;
318		446
319	anfds [fd].reify = 1;	447	anfds [fd].reify = 1;
320		448
321	++fdchangecnt;	449	++fdchangecnt;
322	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	450	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
323	fdchanges [fdchangecnt - 1] = fd;	451	fdchanges [fdchangecnt - 1] = fd;
324	}	452	}
325		453
326	static void	454	static void
327	fd_kill (EV_P_ int fd)	455	fd_kill (EV_P_ int fd)
…		…
329	struct ev_io *w;	457	struct ev_io *w;
330		458
331	while ((w = (struct ev_io *)anfds [fd].head))	459	while ((w = (struct ev_io *)anfds [fd].head))
332	{	460	{
333	ev_io_stop (EV_A_ w);	461	ev_io_stop (EV_A_ w);
334	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);
335	}	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
336	}	474	}
337		475
338	/* called on EBADF to verify fds */	476	/* called on EBADF to verify fds */
339	static void	477	static void
340	fd_ebadf (EV_P)	478	fd_ebadf (EV_P)
341	{	479	{
342	int fd;	480	int fd;
343		481
344	for (fd = 0; fd < anfdmax; ++fd)	482	for (fd = 0; fd < anfdmax; ++fd)
345	if (anfds [fd].events)	483	if (anfds [fd].events)
346	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	484	if (!fd_valid (fd) == -1 && errno == EBADF)
347	fd_kill (EV_A_ fd);	485	fd_kill (EV_A_ fd);
348	}	486	}
349		487
350	/* 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 */
351	static void	489	static void
352	fd_enomem (EV_P)	490	fd_enomem (EV_P)
353	{	491	{
354	int fd = anfdmax;	492	int fd;
355		493
356	while (fd--)	494	for (fd = anfdmax; fd--; )
357	if (anfds [fd].events)	495	if (anfds [fd].events)
358	{	496	{
359	close (fd);
360	fd_kill (EV_A_ fd);	497	fd_kill (EV_A_ fd);
361	return;	498	return;
362	}	499	}
363	}	500	}
364		501
365	/* 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 */
366	static void	503	static void
367	fd_rearm_all (EV_P)	504	fd_rearm_all (EV_P)
368	{	505	{
369	int fd;	506	int fd;
370		507
…		…
385	WT w = heap [k];	522	WT w = heap [k];
386		523
387	while (k && heap [k >> 1]->at > w->at)	524	while (k && heap [k >> 1]->at > w->at)
388	{	525	{
389	heap [k] = heap [k >> 1];	526	heap [k] = heap [k >> 1];
390	heap [k]->active = k + 1;	527	((W)heap [k])->active = k + 1;
391	k >>= 1;	528	k >>= 1;
392	}	529	}
393		530
394	heap [k] = w;	531	heap [k] = w;
395	heap [k]->active = k + 1;	532	((W)heap [k])->active = k + 1;
396		533
397	}	534	}
398		535
399	static void	536	static void
400	downheap (WT *heap, int N, int k)	537	downheap (WT *heap, int N, int k)
…		…
410		547
411	if (w->at <= heap [j]->at)	548	if (w->at <= heap [j]->at)
412	break;	549	break;
413		550
414	heap [k] = heap [j];	551	heap [k] = heap [j];
415	heap [k]->active = k + 1;	552	((W)heap [k])->active = k + 1;
416	k = j;	553	k = j;
417	}	554	}
418		555
419	heap [k] = w;	556	heap [k] = w;
420	heap [k]->active = k + 1;	557	((W)heap [k])->active = k + 1;
		558	}
		559
		560	inline void
		561	adjustheap (WT *heap, int N, int k)
		562	{
		563	upheap (heap, k);
		564	downheap (heap, N, k);
421	}	565	}
422		566
423	/*****************************************************************************/	567	/*****************************************************************************/
424		568
425	typedef struct	569	typedef struct
426	{	570	{
427	struct ev_watcher_list *head;	571	WL head;
428	sig_atomic_t volatile gotsig;	572	sig_atomic_t volatile gotsig;
429	} ANSIG;	573	} ANSIG;
430		574
431	static ANSIG *signals;	575	static ANSIG *signals;
432	static int signalmax;	576	static int signalmax;
…		…
448	}	592	}
449		593
450	static void	594	static void
451	sighandler (int signum)	595	sighandler (int signum)
452	{	596	{
		597	#if _WIN32
		598	signal (signum, sighandler);
		599	#endif
		600
453	signals [signum - 1].gotsig = 1;	601	signals [signum - 1].gotsig = 1;
454		602
455	if (!gotsig)	603	if (!gotsig)
456	{	604	{
457	int old_errno = errno;	605	int old_errno = errno;
…		…
459	write (sigpipe [1], &signum, 1);	607	write (sigpipe [1], &signum, 1);
460	errno = old_errno;	608	errno = old_errno;
461	}	609	}
462	}	610	}
463		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
464	static void	632	static void
465	sigcb (EV_P_ struct ev_io *iow, int revents)	633	sigcb (EV_P_ struct ev_io *iow, int revents)
466	{	634	{
467	struct ev_watcher_list *w;
468	int signum;	635	int signum;
469		636
470	read (sigpipe [0], &revents, 1);	637	read (sigpipe [0], &revents, 1);
471	gotsig = 0;	638	gotsig = 0;
472		639
473	for (signum = signalmax; signum--; )	640	for (signum = signalmax; signum--; )
474	if (signals [signum].gotsig)	641	if (signals [signum].gotsig)
475	{	642	ev_feed_signal_event (EV_A_ signum + 1);
476	signals [signum].gotsig = 0;	643	}
477		644
478	for (w = signals [signum].head; w; w = w->next)	645	inline void
479	event (EV_A_ (W)w, EV_SIGNAL);	646	fd_intern (int fd)
480	}	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
481	}	655	}
482		656
483	static void	657	static void
484	siginit (EV_P)	658	siginit (EV_P)
485	{	659	{
486	#ifndef WIN32	660	fd_intern (sigpipe [0]);
487	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	661	fd_intern (sigpipe [1]);
488	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
489
490	/* rather than sort out wether we really need nb, set it */
491	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
492	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
493	#endif
494		662
495	ev_io_set (&sigev, sigpipe [0], EV_READ);	663	ev_io_set (&sigev, sigpipe [0], EV_READ);
496	ev_io_start (EV_A_ &sigev);	664	ev_io_start (EV_A_ &sigev);
497	ev_unref (EV_A); /* child watcher should not keep loop alive */	665	ev_unref (EV_A); /* child watcher should not keep loop alive */
498	}	666	}
499		667
500	/*****************************************************************************/	668	/*****************************************************************************/
501		669
502	#ifndef WIN32
503
504	static struct ev_child *childs [PID_HASHSIZE];	670	static struct ev_child *childs [PID_HASHSIZE];
		671
		672	#ifndef _WIN32
		673
505	static struct ev_signal childev;	674	static struct ev_signal childev;
506		675
507	#ifndef WCONTINUED	676	#ifndef WCONTINUED
508	# define WCONTINUED 0	677	# define WCONTINUED 0
509	#endif	678	#endif
…		…
514	struct ev_child *w;	683	struct ev_child *w;
515		684
516	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	685	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
517	if (w->pid == pid \|\| !w->pid)	686	if (w->pid == pid \|\| !w->pid)
518	{	687	{
519	w->priority = sw->priority; /* need to do it now */	688	ev_priority (w) = ev_priority (sw); /* need to do it now */
520	w->rpid = pid;	689	w->rpid = pid;
521	w->rstatus = status;	690	w->rstatus = status;
522	event (EV_A_ (W)w, EV_CHILD);	691	ev_feed_event (EV_A_ (W)w, EV_CHILD);
523	}	692	}
524	}	693	}
525		694
526	static void	695	static void
527	childcb (EV_P_ struct ev_signal *sw, int revents)	696	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
529	int pid, status;	698	int pid, status;
530		699
531	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	700	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
532	{	701	{
533	/* 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 */
534	event (EV_A_ (W)sw, EV_SIGNAL);	703	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
535		704
536	child_reap (EV_A_ sw, pid, pid, status);	705	child_reap (EV_A_ sw, pid, pid, status);
537	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 */
538	}	707	}
539	}	708	}
…		…
569		738
570	/* 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 */
571	static int	740	static int
572	enable_secure (void)	741	enable_secure (void)
573	{	742	{
574	#ifdef WIN32	743	#ifdef _WIN32
575	return 0;	744	return 0;
576	#else	745	#else
577	return getuid () != geteuid ()	746	return getuid () != geteuid ()
578	\|\| getgid () != getegid ();	747	\|\| getgid () != getegid ();
579	#endif	748	#endif
580	}	749	}
581		750
582	int	751	unsigned int
583	ev_method (EV_P)	752	ev_method (EV_P)
584	{	753	{
585	return method;	754	return method;
586	}	755	}
587		756
588	static void	757	static void
589	loop_init (EV_P_ int methods)	758	loop_init (EV_P_ unsigned int flags)
590	{	759	{
591	if (!method)	760	if (!method)
592	{	761	{
593	#if EV_USE_MONOTONIC	762	#if EV_USE_MONOTONIC
594	{	763	{
…		…
596	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	765	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
597	have_monotonic = 1;	766	have_monotonic = 1;
598	}	767	}
599	#endif	768	#endif
600		769
601	rt_now = ev_time ();	770	ev_rt_now = ev_time ();
602	mn_now = get_clock ();	771	mn_now = get_clock ();
603	now_floor = mn_now;	772	now_floor = mn_now;
604	rtmn_diff = rt_now - mn_now;	773	rtmn_diff = ev_rt_now - mn_now;
605		774
606	if (methods == EVMETHOD_AUTO)	775	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
607	if (!enable_secure () && getenv ("LIBEV_METHODS"))
608	methods = atoi (getenv ("LIBEV_METHODS"));	776	flags = atoi (getenv ("LIBEV_FLAGS"));
609	else	777
610	methods = EVMETHOD_ANY;	778	if (!(flags & 0x0000ffff))
		779	flags \|= 0x0000ffff;
611		780
612	method = 0;	781	method = 0;
613	#if EV_USE_KQUEUE	782	#if EV_USE_KQUEUE
614	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	783	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
615	#endif	784	#endif
616	#if EV_USE_EPOLL	785	#if EV_USE_EPOLL
617	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	786	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
618	#endif	787	#endif
619	#if EV_USE_POLL	788	#if EV_USE_POLL
620	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	789	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
621	#endif	790	#endif
622	#if EV_USE_SELECT	791	#if EV_USE_SELECT
623	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	792	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
624	#endif	793	#endif
		794
		795	ev_init (&sigev, sigcb);
		796	ev_set_priority (&sigev, EV_MAXPRI);
625	}	797	}
626	}	798	}
627		799
628	void	800	void
629	loop_destroy (EV_P)	801	loop_destroy (EV_P)
630	{	802	{
		803	int i;
		804
631	#if EV_USE_KQUEUE	805	#if EV_USE_KQUEUE
632	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	806	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
633	#endif	807	#endif
634	#if EV_USE_EPOLL	808	#if EV_USE_EPOLL
635	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	809	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
…		…
639	#endif	813	#endif
640	#if EV_USE_SELECT	814	#if EV_USE_SELECT
641	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	815	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
642	#endif	816	#endif
643		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
644	method = 0;	831	method = 0;
645	/TODO/
646	}	832	}
647		833
648	void	834	static void
649	loop_fork (EV_P)	835	loop_fork (EV_P)
650	{	836	{
651	/TODO/
652	#if EV_USE_EPOLL	837	#if EV_USE_EPOLL
653	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	838	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
654	#endif	839	#endif
655	#if EV_USE_KQUEUE	840	#if EV_USE_KQUEUE
656	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	841	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
657	#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;
658	}	860	}
659		861
660	#if EV_MULTIPLICITY	862	#if EV_MULTIPLICITY
661	struct ev_loop *	863	struct ev_loop *
662	ev_loop_new (int methods)	864	ev_loop_new (unsigned int flags)
663	{	865	{
664	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));
665		867
		868	memset (loop, 0, sizeof (struct ev_loop));
		869
666	loop_init (EV_A_ methods);	870	loop_init (EV_A_ flags);
667		871
668	if (ev_method (EV_A))	872	if (ev_method (EV_A))
669	return loop;	873	return loop;
670		874
671	return 0;	875	return 0;
…		…
673		877
674	void	878	void
675	ev_loop_destroy (EV_P)	879	ev_loop_destroy (EV_P)
676	{	880	{
677	loop_destroy (EV_A);	881	loop_destroy (EV_A);
678	free (loop);	882	ev_free (loop);
679	}	883	}
680		884
681	void	885	void
682	ev_loop_fork (EV_P)	886	ev_loop_fork (EV_P)
683	{	887	{
684	loop_fork (EV_A);	888	postfork = 1;
685	}	889	}
686		890
687	#endif	891	#endif
688		892
689	#if EV_MULTIPLICITY	893	#if EV_MULTIPLICITY
690	struct ev_loop default_loop_struct;
691	static struct ev_loop *default_loop;
692
693	struct ev_loop *	894	struct ev_loop *
694	#else	895	#else
695	static int default_loop;
696
697	int	896	int
698	#endif	897	#endif
699	ev_default_loop (int methods)	898	ev_default_loop (unsigned int flags)
700	{	899	{
701	if (sigpipe [0] == sigpipe [1])	900	if (sigpipe [0] == sigpipe [1])
702	if (pipe (sigpipe))	901	if (pipe (sigpipe))
703	return 0;	902	return 0;
704		903
…		…
708	struct ev_loop *loop = default_loop = &default_loop_struct;	907	struct ev_loop *loop = default_loop = &default_loop_struct;
709	#else	908	#else
710	default_loop = 1;	909	default_loop = 1;
711	#endif	910	#endif
712		911
713	loop_init (EV_A_ methods);	912	loop_init (EV_A_ flags);
714		913
715	if (ev_method (EV_A))	914	if (ev_method (EV_A))
716	{	915	{
717	ev_watcher_init (&sigev, sigcb);
718	ev_set_priority (&sigev, EV_MAXPRI);
719	siginit (EV_A);	916	siginit (EV_A);
720		917
721	#ifndef WIN32	918	#ifndef _WIN32
722	ev_signal_init (&childev, childcb, SIGCHLD);	919	ev_signal_init (&childev, childcb, SIGCHLD);
723	ev_set_priority (&childev, EV_MAXPRI);	920	ev_set_priority (&childev, EV_MAXPRI);
724	ev_signal_start (EV_A_ &childev);	921	ev_signal_start (EV_A_ &childev);
725	ev_unref (EV_A); /* child watcher should not keep loop alive */	922	ev_unref (EV_A); /* child watcher should not keep loop alive */
726	#endif	923	#endif
…		…
737	{	934	{
738	#if EV_MULTIPLICITY	935	#if EV_MULTIPLICITY
739	struct ev_loop *loop = default_loop;	936	struct ev_loop *loop = default_loop;
740	#endif	937	#endif
741		938
		939	#ifndef _WIN32
742	ev_ref (EV_A); /* child watcher */	940	ev_ref (EV_A); /* child watcher */
743	ev_signal_stop (EV_A_ &childev);	941	ev_signal_stop (EV_A_ &childev);
		942	#endif
744		943
745	ev_ref (EV_A); /* signal watcher */	944	ev_ref (EV_A); /* signal watcher */
746	ev_io_stop (EV_A_ &sigev);	945	ev_io_stop (EV_A_ &sigev);
747		946
748	close (sigpipe [0]); sigpipe [0] = 0;	947	close (sigpipe [0]); sigpipe [0] = 0;
…		…
756	{	955	{
757	#if EV_MULTIPLICITY	956	#if EV_MULTIPLICITY
758	struct ev_loop *loop = default_loop;	957	struct ev_loop *loop = default_loop;
759	#endif	958	#endif
760		959
761	loop_fork (EV_A);	960	if (method)
762		961	postfork = 1;
763	ev_io_stop (EV_A_ &sigev);
764	close (sigpipe [0]);
765	close (sigpipe [1]);
766	pipe (sigpipe);
767
768	ev_ref (EV_A); /* signal watcher */
769	siginit (EV_A);
770	}	962	}
771		963
772	/*****************************************************************************/	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	}
773		977
774	static void	978	static void
775	call_pending (EV_P)	979	call_pending (EV_P)
776	{	980	{
777	int pri;	981	int pri;
…		…
782	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	986	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
783		987
784	if (p->w)	988	if (p->w)
785	{	989	{
786	p->w->pending = 0;	990	p->w->pending = 0;
787	p->w->cb (EV_A_ p->w, p->events);	991	EV_CB_INVOKE (p->w, p->events);
788	}	992	}
789	}	993	}
790	}	994	}
791		995
792	static void	996	static void
793	timers_reify (EV_P)	997	timers_reify (EV_P)
794	{	998	{
795	while (timercnt && timers [0]->at <= mn_now)	999	while (timercnt && ((WT)timers [0])->at <= mn_now)
796	{	1000	{
797	struct ev_timer *w = timers [0];	1001	struct ev_timer *w = timers [0];
798		1002
799	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1003	assert (("inactive timer on timer heap detected", ev_is_active (w)));
800		1004
801	/* first reschedule or stop timer */	1005	/* first reschedule or stop timer */
802	if (w->repeat)	1006	if (w->repeat)
803	{	1007	{
804	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
805	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
806	downheap ((WT *)timers, timercnt, 0);	1014	downheap ((WT *)timers, timercnt, 0);
807	}	1015	}
808	else	1016	else
809	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1017	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
810		1018
811	event (EV_A_ (W)w, EV_TIMEOUT);	1019	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
812	}	1020	}
813	}	1021	}
814		1022
		1023	#if EV_PERIODICS
815	static void	1024	static void
816	periodics_reify (EV_P)	1025	periodics_reify (EV_P)
817	{	1026	{
818	while (periodiccnt && periodics [0]->at <= rt_now)	1027	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
819	{	1028	{
820	struct ev_periodic *w = periodics [0];	1029	struct ev_periodic *w = periodics [0];
821		1030
822	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1031	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
823		1032
824	/* first reschedule or stop timer */	1033	/* first reschedule or stop timer */
825	if (w->interval)	1034	if (w->reschedule_cb)
826	{	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	{
827	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1042	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
828	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1043	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
829	downheap ((WT *)periodics, periodiccnt, 0);	1044	downheap ((WT *)periodics, periodiccnt, 0);
830	}	1045	}
831	else	1046	else
832	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1047	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
833		1048
834	event (EV_A_ (W)w, EV_PERIODIC);	1049	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
835	}	1050	}
836	}	1051	}
837		1052
838	static void	1053	static void
839	periodics_reschedule (EV_P)	1054	periodics_reschedule (EV_P)
…		…
843	/* adjust periodics after time jump */	1058	/* adjust periodics after time jump */
844	for (i = 0; i < periodiccnt; ++i)	1059	for (i = 0; i < periodiccnt; ++i)
845	{	1060	{
846	struct ev_periodic *w = periodics [i];	1061	struct ev_periodic *w = periodics [i];
847		1062
		1063	if (w->reschedule_cb)
		1064	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
848	if (w->interval)	1065	else if (w->interval)
849	{
850	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1066	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
851
852	if (fabs (diff) >= 1e-4)
853	{
854	ev_periodic_stop (EV_A_ w);
855	ev_periodic_start (EV_A_ w);
856
857	i = 0; /* restart loop, inefficient, but time jumps should be rare */
858	}
859	}
860	}	1067	}
		1068
		1069	/* now rebuild the heap */
		1070	for (i = periodiccnt >> 1; i--; )
		1071	downheap ((WT *)periodics, periodiccnt, i);
861	}	1072	}
		1073	#endif
862		1074
863	inline int	1075	inline int
864	time_update_monotonic (EV_P)	1076	time_update_monotonic (EV_P)
865	{	1077	{
866	mn_now = get_clock ();	1078	mn_now = get_clock ();
867		1079
868	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1080	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
869	{	1081	{
870	rt_now = rtmn_diff + mn_now;	1082	ev_rt_now = rtmn_diff + mn_now;
871	return 0;	1083	return 0;
872	}	1084	}
873	else	1085	else
874	{	1086	{
875	now_floor = mn_now;	1087	now_floor = mn_now;
876	rt_now = ev_time ();	1088	ev_rt_now = ev_time ();
877	return 1;	1089	return 1;
878	}	1090	}
879	}	1091	}
880		1092
881	static void	1093	static void
…		…
890	{	1102	{
891	ev_tstamp odiff = rtmn_diff;	1103	ev_tstamp odiff = rtmn_diff;
892		1104
893	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 */
894	{	1106	{
895	rtmn_diff = rt_now - mn_now;	1107	rtmn_diff = ev_rt_now - mn_now;
896		1108
897	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1109	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
898	return; /* all is well */	1110	return; /* all is well */
899		1111
900	rt_now = ev_time ();	1112	ev_rt_now = ev_time ();
901	mn_now = get_clock ();	1113	mn_now = get_clock ();
902	now_floor = mn_now;	1114	now_floor = mn_now;
903	}	1115	}
904		1116
		1117	# if EV_PERIODICS
905	periodics_reschedule (EV_A);	1118	periodics_reschedule (EV_A);
		1119	# endif
906	/* no timer adjustment, as the monotonic clock doesn't jump */	1120	/* no timer adjustment, as the monotonic clock doesn't jump */
907	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1121	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
908	}	1122	}
909	}	1123	}
910	else	1124	else
911	#endif	1125	#endif
912	{	1126	{
913	rt_now = ev_time ();	1127	ev_rt_now = ev_time ();
914		1128
915	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))
916	{	1130	{
		1131	#if EV_PERIODICS
917	periodics_reschedule (EV_A);	1132	periodics_reschedule (EV_A);
		1133	#endif
918		1134
919	/* 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 */
920	for (i = 0; i < timercnt; ++i)	1136	for (i = 0; i < timercnt; ++i)
921	timers [i]->at += rt_now - mn_now;	1137	((WT)timers [i])->at += ev_rt_now - mn_now;
922	}	1138	}
923		1139
924	mn_now = rt_now;	1140	mn_now = ev_rt_now;
925	}	1141	}
926	}	1142	}
927		1143
928	void	1144	void
929	ev_ref (EV_P)	1145	ev_ref (EV_P)
…		…
952	{	1168	{
953	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1169	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
954	call_pending (EV_A);	1170	call_pending (EV_A);
955	}	1171	}
956		1172
		1173	/* we might have forked, so reify kernel state if necessary */
		1174	if (expect_false (postfork))
		1175	loop_fork (EV_A);
		1176
957	/* update fd-related kernel structures */	1177	/* update fd-related kernel structures */
958	fd_reify (EV_A);	1178	fd_reify (EV_A);
959		1179
960	/* calculate blocking time */	1180	/* calculate blocking time */
961		1181
962	/* 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
963	always have timers, we just calculate it always */	1183	always have timers, we just calculate it always */
964	#if EV_USE_MONOTONIC	1184	#if EV_USE_MONOTONIC
965	if (expect_true (have_monotonic))	1185	if (expect_true (have_monotonic))
966	time_update_monotonic (EV_A);	1186	time_update_monotonic (EV_A);
967	else	1187	else
968	#endif	1188	#endif
969	{	1189	{
970	rt_now = ev_time ();	1190	ev_rt_now = ev_time ();
971	mn_now = rt_now;	1191	mn_now = ev_rt_now;
972	}	1192	}
973		1193
974	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1194	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
975	block = 0.;	1195	block = 0.;
976	else	1196	else
977	{	1197	{
978	block = MAX_BLOCKTIME;	1198	block = MAX_BLOCKTIME;
979		1199
980	if (timercnt)	1200	if (timercnt)
981	{	1201	{
982	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1202	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
983	if (block > to) block = to;	1203	if (block > to) block = to;
984	}	1204	}
985		1205
		1206	#if EV_PERIODICS
986	if (periodiccnt)	1207	if (periodiccnt)
987	{	1208	{
988	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1209	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
989	if (block > to) block = to;	1210	if (block > to) block = to;
990	}	1211	}
		1212	#endif
991		1213
992	if (block < 0.) block = 0.;	1214	if (block < 0.) block = 0.;
993	}	1215	}
994		1216
995	method_poll (EV_A_ block);	1217	method_poll (EV_A_ block);
996		1218
997	/* update rt_now, do magic */	1219	/* update ev_rt_now, do magic */
998	time_update (EV_A);	1220	time_update (EV_A);
999		1221
1000	/* queue pending timers and reschedule them */	1222	/* queue pending timers and reschedule them */
1001	timers_reify (EV_A); /* relative timers called last */	1223	timers_reify (EV_A); /* relative timers called last */
		1224	#if EV_PERIODICS
1002	periodics_reify (EV_A); /* absolute timers called first */	1225	periodics_reify (EV_A); /* absolute timers called first */
		1226	#endif
1003		1227
1004	/* queue idle watchers unless io or timers are pending */	1228	/* queue idle watchers unless io or timers are pending */
1005	if (!pendingcnt)	1229	if (idlecnt && !any_pending (EV_A))
1006	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1230	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1007		1231
1008	/* queue check watchers, to be executed first */	1232	/* queue check watchers, to be executed first */
1009	if (checkcnt)	1233	if (checkcnt)
1010	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1234	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
…		…
1085	return;	1309	return;
1086		1310
1087	assert (("ev_io_start called with negative fd", fd >= 0));	1311	assert (("ev_io_start called with negative fd", fd >= 0));
1088		1312
1089	ev_start (EV_A_ (W)w, 1);	1313	ev_start (EV_A_ (W)w, 1);
1090	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1314	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1091	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1315	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1092		1316
1093	fd_change (EV_A_ fd);	1317	fd_change (EV_A_ fd);
1094	}	1318	}
1095		1319
…		…
1098	{	1322	{
1099	ev_clear_pending (EV_A_ (W)w);	1323	ev_clear_pending (EV_A_ (W)w);
1100	if (!ev_is_active (w))	1324	if (!ev_is_active (w))
1101	return;	1325	return;
1102		1326
		1327	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1328
1103	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1329	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1104	ev_stop (EV_A_ (W)w);	1330	ev_stop (EV_A_ (W)w);
1105		1331
1106	fd_change (EV_A_ w->fd);	1332	fd_change (EV_A_ w->fd);
1107	}	1333	}
…		…
1110	ev_timer_start (EV_P_ struct ev_timer *w)	1336	ev_timer_start (EV_P_ struct ev_timer *w)
1111	{	1337	{
1112	if (ev_is_active (w))	1338	if (ev_is_active (w))
1113	return;	1339	return;
1114		1340
1115	w->at += mn_now;	1341	((WT)w)->at += mn_now;
1116		1342
1117	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.));
1118		1344
1119	ev_start (EV_A_ (W)w, ++timercnt);	1345	ev_start (EV_A_ (W)w, ++timercnt);
1120	array_needsize (timers, timermax, timercnt, );	1346	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1121	timers [timercnt - 1] = w;	1347	timers [timercnt - 1] = w;
1122	upheap ((WT *)timers, timercnt - 1);	1348	upheap ((WT *)timers, timercnt - 1);
		1349
		1350	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1123	}	1351	}
1124		1352
1125	void	1353	void
1126	ev_timer_stop (EV_P_ struct ev_timer *w)	1354	ev_timer_stop (EV_P_ struct ev_timer *w)
1127	{	1355	{
1128	ev_clear_pending (EV_A_ (W)w);	1356	ev_clear_pending (EV_A_ (W)w);
1129	if (!ev_is_active (w))	1357	if (!ev_is_active (w))
1130	return;	1358	return;
1131		1359
		1360	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1361
1132	if (w->active < timercnt--)	1362	if (((W)w)->active < timercnt--)
1133	{	1363	{
1134	timers [w->active - 1] = timers [timercnt];	1364	timers [((W)w)->active - 1] = timers [timercnt];
1135	downheap ((WT *)timers, timercnt, w->active - 1);	1365	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1136	}	1366	}
1137		1367
1138	w->at = w->repeat;	1368	((WT)w)->at -= mn_now;
1139		1369
1140	ev_stop (EV_A_ (W)w);	1370	ev_stop (EV_A_ (W)w);
1141	}	1371	}
1142		1372
1143	void	1373	void
…		…
1145	{	1375	{
1146	if (ev_is_active (w))	1376	if (ev_is_active (w))
1147	{	1377	{
1148	if (w->repeat)	1378	if (w->repeat)
1149	{	1379	{
1150	w->at = mn_now + w->repeat;	1380	((WT)w)->at = mn_now + w->repeat;
1151	downheap ((WT *)timers, timercnt, w->active - 1);	1381	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1152	}	1382	}
1153	else	1383	else
1154	ev_timer_stop (EV_A_ w);	1384	ev_timer_stop (EV_A_ w);
1155	}	1385	}
1156	else if (w->repeat)	1386	else if (w->repeat)
		1387	{
		1388	w->at = w->repeat;
1157	ev_timer_start (EV_A_ w);	1389	ev_timer_start (EV_A_ w);
		1390	}
1158	}	1391	}
1159		1392
		1393	#if EV_PERIODICS
1160	void	1394	void
1161	ev_periodic_start (EV_P_ struct ev_periodic *w)	1395	ev_periodic_start (EV_P_ struct ev_periodic *w)
1162	{	1396	{
1163	if (ev_is_active (w))	1397	if (ev_is_active (w))
1164	return;	1398	return;
1165		1399
		1400	if (w->reschedule_cb)
		1401	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1402	else if (w->interval)
		1403	{
1166	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1404	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1167
1168	/* this formula differs from the one in periodic_reify because we do not always round up */	1405	/* this formula differs from the one in periodic_reify because we do not always round up */
1169	if (w->interval)
1170	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1406	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1407	}
1171		1408
1172	ev_start (EV_A_ (W)w, ++periodiccnt);	1409	ev_start (EV_A_ (W)w, ++periodiccnt);
1173	array_needsize (periodics, periodicmax, periodiccnt, );	1410	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1174	periodics [periodiccnt - 1] = w;	1411	periodics [periodiccnt - 1] = w;
1175	upheap ((WT *)periodics, periodiccnt - 1);	1412	upheap ((WT *)periodics, periodiccnt - 1);
		1413
		1414	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1176	}	1415	}
1177		1416
1178	void	1417	void
1179	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1418	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1180	{	1419	{
1181	ev_clear_pending (EV_A_ (W)w);	1420	ev_clear_pending (EV_A_ (W)w);
1182	if (!ev_is_active (w))	1421	if (!ev_is_active (w))
1183	return;	1422	return;
1184		1423
		1424	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1425
1185	if (w->active < periodiccnt--)	1426	if (((W)w)->active < periodiccnt--)
1186	{	1427	{
1187	periodics [w->active - 1] = periodics [periodiccnt];	1428	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1188	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1429	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1189	}	1430	}
1190		1431
1191	ev_stop (EV_A_ (W)w);	1432	ev_stop (EV_A_ (W)w);
1192	}	1433	}
1193		1434
1194	void	1435	void
		1436	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1437	{
		1438	/* TODO: use adjustheap and recalculation */
		1439	ev_periodic_stop (EV_A_ w);
		1440	ev_periodic_start (EV_A_ w);
		1441	}
		1442	#endif
		1443
		1444	void
1195	ev_idle_start (EV_P_ struct ev_idle *w)	1445	ev_idle_start (EV_P_ struct ev_idle *w)
1196	{	1446	{
1197	if (ev_is_active (w))	1447	if (ev_is_active (w))
1198	return;	1448	return;
1199		1449
1200	ev_start (EV_A_ (W)w, ++idlecnt);	1450	ev_start (EV_A_ (W)w, ++idlecnt);
1201	array_needsize (idles, idlemax, idlecnt, );	1451	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1202	idles [idlecnt - 1] = w;	1452	idles [idlecnt - 1] = w;
1203	}	1453	}
1204		1454
1205	void	1455	void
1206	ev_idle_stop (EV_P_ struct ev_idle *w)	1456	ev_idle_stop (EV_P_ struct ev_idle *w)
1207	{	1457	{
1208	ev_clear_pending (EV_A_ (W)w);	1458	ev_clear_pending (EV_A_ (W)w);
		1459	if (!ev_is_active (w))
		1460	return;
		1461
		1462	idles [((W)w)->active - 1] = idles [--idlecnt];
		1463	ev_stop (EV_A_ (W)w);
		1464	}
		1465
		1466	void
		1467	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1468	{
1209	if (ev_is_active (w))	1469	if (ev_is_active (w))
1210	return;	1470	return;
1211		1471
1212	idles [w->active - 1] = idles [--idlecnt];	1472	ev_start (EV_A_ (W)w, ++preparecnt);
		1473	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1474	prepares [preparecnt - 1] = w;
		1475	}
		1476
		1477	void
		1478	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1479	{
		1480	ev_clear_pending (EV_A_ (W)w);
		1481	if (!ev_is_active (w))
		1482	return;
		1483
		1484	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1213	ev_stop (EV_A_ (W)w);	1485	ev_stop (EV_A_ (W)w);
1214	}	1486	}
1215		1487
1216	void	1488	void
1217	ev_prepare_start (EV_P_ struct ev_prepare *w)	1489	ev_check_start (EV_P_ struct ev_check *w)
1218	{	1490	{
1219	if (ev_is_active (w))	1491	if (ev_is_active (w))
1220	return;	1492	return;
1221		1493
1222	ev_start (EV_A_ (W)w, ++preparecnt);	1494	ev_start (EV_A_ (W)w, ++checkcnt);
1223	array_needsize (prepares, preparemax, preparecnt, );	1495	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1224	prepares [preparecnt - 1] = w;	1496	checks [checkcnt - 1] = w;
1225	}	1497	}
1226		1498
1227	void	1499	void
1228	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1500	ev_check_stop (EV_P_ struct ev_check *w)
1229	{	1501	{
1230	ev_clear_pending (EV_A_ (W)w);	1502	ev_clear_pending (EV_A_ (W)w);
1231	if (ev_is_active (w))	1503	if (!ev_is_active (w))
1232	return;	1504	return;
1233		1505
1234	prepares [w->active - 1] = prepares [--preparecnt];
1235	ev_stop (EV_A_ (W)w);
1236	}
1237
1238	void
1239	ev_check_start (EV_P_ struct ev_check *w)
1240	{
1241	if (ev_is_active (w))
1242	return;
1243
1244	ev_start (EV_A_ (W)w, ++checkcnt);
1245	array_needsize (checks, checkmax, checkcnt, );
1246	checks [checkcnt - 1] = w;
1247	}
1248
1249	void
1250	ev_check_stop (EV_P_ struct ev_check *w)
1251	{
1252	ev_clear_pending (EV_A_ (W)w);
1253	if (ev_is_active (w))
1254	return;
1255
1256	checks [w->active - 1] = checks [--checkcnt];	1506	checks [((W)w)->active - 1] = checks [--checkcnt];
1257	ev_stop (EV_A_ (W)w);	1507	ev_stop (EV_A_ (W)w);
1258	}	1508	}
1259		1509
1260	#ifndef SA_RESTART	1510	#ifndef SA_RESTART
1261	# define SA_RESTART 0	1511	# define SA_RESTART 0
…		…
1271	return;	1521	return;
1272		1522
1273	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1523	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1274		1524
1275	ev_start (EV_A_ (W)w, 1);	1525	ev_start (EV_A_ (W)w, 1);
1276	array_needsize (signals, signalmax, w->signum, signals_init);	1526	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1277	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1527	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1278		1528
1279	if (!w->next)	1529	if (!((WL)w)->next)
1280	{	1530	{
		1531	#if _WIN32
		1532	signal (w->signum, sighandler);
		1533	#else
1281	struct sigaction sa;	1534	struct sigaction sa;
1282	sa.sa_handler = sighandler;	1535	sa.sa_handler = sighandler;
1283	sigfillset (&sa.sa_mask);	1536	sigfillset (&sa.sa_mask);
1284	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1537	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1285	sigaction (w->signum, &sa, 0);	1538	sigaction (w->signum, &sa, 0);
		1539	#endif
1286	}	1540	}
1287	}	1541	}
1288		1542
1289	void	1543	void
1290	ev_signal_stop (EV_P_ struct ev_signal *w)	1544	ev_signal_stop (EV_P_ struct ev_signal *w)
…		…
1315		1569
1316	void	1570	void
1317	ev_child_stop (EV_P_ struct ev_child *w)	1571	ev_child_stop (EV_P_ struct ev_child *w)
1318	{	1572	{
1319	ev_clear_pending (EV_A_ (W)w);	1573	ev_clear_pending (EV_A_ (W)w);
1320	if (ev_is_active (w))	1574	if (!ev_is_active (w))
1321	return;	1575	return;
1322		1576
1323	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1577	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1324	ev_stop (EV_A_ (W)w);	1578	ev_stop (EV_A_ (W)w);
1325	}	1579	}
…		…
1340	void (cb)(int revents, void arg) = once->cb;	1594	void (cb)(int revents, void arg) = once->cb;
1341	void *arg = once->arg;	1595	void *arg = once->arg;
1342		1596
1343	ev_io_stop (EV_A_ &once->io);	1597	ev_io_stop (EV_A_ &once->io);
1344	ev_timer_stop (EV_A_ &once->to);	1598	ev_timer_stop (EV_A_ &once->to);
1345	free (once);	1599	ev_free (once);
1346		1600
1347	cb (revents, arg);	1601	cb (revents, arg);
1348	}	1602	}
1349		1603
1350	static void	1604	static void
…		…
1360	}	1614	}
1361		1615
1362	void	1616	void
1363	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1617	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1364	{	1618	{
1365	struct ev_once *once = malloc (sizeof (struct ev_once));	1619	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1366		1620
1367	if (!once)	1621	if (!once)
1368	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1622	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1369	else	1623	else
1370	{	1624	{
1371	once->cb = cb;	1625	once->cb = cb;
1372	once->arg = arg;	1626	once->arg = arg;
1373		1627
1374	ev_watcher_init (&once->io, once_cb_io);	1628	ev_init (&once->io, once_cb_io);
1375	if (fd >= 0)	1629	if (fd >= 0)
1376	{	1630	{
1377	ev_io_set (&once->io, fd, events);	1631	ev_io_set (&once->io, fd, events);
1378	ev_io_start (EV_A_ &once->io);	1632	ev_io_start (EV_A_ &once->io);
1379	}	1633	}
1380		1634
1381	ev_watcher_init (&once->to, once_cb_to);	1635	ev_init (&once->to, once_cb_to);
1382	if (timeout >= 0.)	1636	if (timeout >= 0.)
1383	{	1637	{
1384	ev_timer_set (&once->to, timeout, 0.);	1638	ev_timer_set (&once->to, timeout, 0.);
1385	ev_timer_start (EV_A_ &once->to);	1639	ev_timer_start (EV_A_ &once->to);
1386	}	1640	}
1387	}	1641	}
1388	}	1642	}
1389		1643
		1644	#ifdef __cplusplus
		1645	}
		1646	#endif
		1647

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Comparing libev/ev.c (file contents): Revision 1.61 by root, Sun Nov 4 19:45:09 2007 UTC vs. Revision 1.113 by root, Mon Nov 12 08:00:05 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.61 by root, Sun Nov 4 19:45:09 2007 UTC vs.
Revision 1.113 by root, Mon Nov 12 08:00:05 2007 UTC