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

Comparing libev/ev.c (file contents):
Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC vs.
Revision 1.103 by root, Mon Nov 12 00:31:08 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"
		38
		39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
		41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
		44	# define EV_USE_REALTIME 1
		45	# endif
		46	# endif
		47
		48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
		49	# define EV_USE_SELECT 1
		50	# endif
		51
		52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
		53	# define EV_USE_POLL 1
		54	# endif
		55
		56	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
		57	# define EV_USE_EPOLL 1
		58	# endif
		59
		60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
		61	# define EV_USE_KQUEUE 1
		62	# endif
		63
33	#endif	64	#endif
34		65
35	#include <math.h>	66	#include <math.h>
36	#include <stdlib.h>	67	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	68	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	69	#include <stddef.h>
41		70
42	#include <stdio.h>	71	#include <stdio.h>
43		72
44	#include <assert.h>	73	#include <assert.h>
45	#include <errno.h>	74	#include <errno.h>
46	#include <sys/types.h>	75	#include <sys/types.h>
		76	#include <time.h>
		77
		78	#include <signal.h>
		79
47	#ifndef WIN32	80	#ifndef _WIN32
		81	# include <unistd.h>
		82	# include <sys/time.h>
48	# 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
49	#endif	89	# endif
50	#include <sys/time.h>	90	#endif
51	#include <time.h>
52		91
53	/**/	92	/**/
54		93
55	#ifndef EV_USE_MONOTONIC	94	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	95	# define EV_USE_MONOTONIC 1
…		…
58		97
59	#ifndef EV_USE_SELECT	98	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	99	# define EV_USE_SELECT 1
61	#endif	100	#endif
62		101
63	#ifndef EV_USEV_POLL	102	#ifndef EV_USE_POLL
64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */	103	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
65	#endif	104	#endif
66		105
67	#ifndef EV_USE_EPOLL	106	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	107	# define EV_USE_EPOLL 0
69	#endif	108	#endif
…		…
84	#endif	123	#endif
85		124
86	#ifndef CLOCK_REALTIME	125	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	126	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	127	# define EV_USE_REALTIME 0
		128	#endif
		129
		130	#if EV_SELECT_IS_WINSOCKET
		131	# include <winsock.h>
89	#endif	132	#endif
90		133
91	/**/	134	/**/
92		135
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	136	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	137	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	138	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
96	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	139	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
97		140
		141	#ifdef EV_H
		142	# include EV_H
		143	#else
98	#include "ev.h"	144	# include "ev.h"
		145	#endif
99		146
100	#if __GNUC__ >= 3	147	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	148	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	149	# define inline inline
103	#else	150	#else
…		…
109	#define expect_true(expr) expect ((expr) != 0, 1)	156	#define expect_true(expr) expect ((expr) != 0, 1)
110		157
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	158	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	159	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113		160
		161	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		162
114	typedef struct ev_watcher *W;	163	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	164	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	165	typedef struct ev_watcher_time *WT;
117		166
118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	167	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119		168
		169	#ifdef _WIN32
		170	# include "ev_win32.c"
		171	#endif
		172
120	/*****************************************************************************/	173	/*****************************************************************************/
121		174
		175	static void (syserr_cb)(const char msg);
		176
		177	void ev_set_syserr_cb (void (cb)(const char msg))
		178	{
		179	syserr_cb = cb;
		180	}
		181
		182	static void
		183	syserr (const char *msg)
		184	{
		185	if (!msg)
		186	msg = "(libev) system error";
		187
		188	if (syserr_cb)
		189	syserr_cb (msg);
		190	else
		191	{
		192	perror (msg);
		193	abort ();
		194	}
		195	}
		196
		197	static void (alloc)(void *ptr, long size);
		198
		199	void ev_set_allocator (void (cb)(void *ptr, long size))
		200	{
		201	alloc = cb;
		202	}
		203
		204	static void *
		205	ev_realloc (void *ptr, long size)
		206	{
		207	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		208
		209	if (!ptr && size)
		210	{
		211	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		212	abort ();
		213	}
		214
		215	return ptr;
		216	}
		217
		218	#define ev_malloc(size) ev_realloc (0, (size))
		219	#define ev_free(ptr) ev_realloc ((ptr), 0)
		220
		221	/*****************************************************************************/
		222
122	typedef struct	223	typedef struct
123	{	224	{
124	struct ev_watcher_list *head;	225	WL head;
125	unsigned char events;	226	unsigned char events;
126	unsigned char reify;	227	unsigned char reify;
		228	#if EV_SELECT_IS_WINSOCKET
		229	SOCKET handle;
		230	#endif
127	} ANFD;	231	} ANFD;
128		232
129	typedef struct	233	typedef struct
130	{	234	{
131	W w;	235	W w;
132	int events;	236	int events;
133	} ANPENDING;	237	} ANPENDING;
134		238
135	#ifdef EV_MULTIPLICITY	239	#if EV_MULTIPLICITY
136		240
137	struct ev_loop	241	struct ev_loop
138	{	242	{
		243	ev_tstamp ev_rt_now;
		244	#define ev_rt_now ((loop)->ev_rt_now)
139	# define VAR(name,decl) decl;	245	#define VAR(name,decl) decl;
140	# include "ev_vars.h"	246	#include "ev_vars.h"
141	};
142	# undef VAR	247	#undef VAR
		248	};
143	# include "ev_wrap.h"	249	#include "ev_wrap.h"
		250
		251	struct ev_loop default_loop_struct;
		252	static struct ev_loop *default_loop;
144		253
145	#else	254	#else
146		255
		256	ev_tstamp ev_rt_now;
147	# define VAR(name,decl) static decl;	257	#define VAR(name,decl) static decl;
148	# include "ev_vars.h"	258	#include "ev_vars.h"
149	# undef VAR	259	#undef VAR
		260
		261	static int default_loop;
150		262
151	#endif	263	#endif
152		264
153	/*****************************************************************************/	265	/*****************************************************************************/
154		266
155	inline ev_tstamp	267	ev_tstamp
156	ev_time (void)	268	ev_time (void)
157	{	269	{
158	#if EV_USE_REALTIME	270	#if EV_USE_REALTIME
159	struct timespec ts;	271	struct timespec ts;
160	clock_gettime (CLOCK_REALTIME, &ts);	272	clock_gettime (CLOCK_REALTIME, &ts);
…		…
179	#endif	291	#endif
180		292
181	return ev_time ();	293	return ev_time ();
182	}	294	}
183		295
		296	#if EV_MULTIPLICITY
184	ev_tstamp	297	ev_tstamp
185	ev_now (EV_P)	298	ev_now (EV_P)
186	{	299	{
187	return rt_now;	300	return ev_rt_now;
188	}	301	}
		302	#endif
189		303
190	#define array_roundsize(base,n) ((n) \| 4 & ~3)	304	#define array_roundsize(type,n) ((n) \| 4 & ~3)
191		305
192	#define array_needsize(base,cur,cnt,init) \	306	#define array_needsize(type,base,cur,cnt,init) \
193	if (expect_false ((cnt) > cur)) \	307	if (expect_false ((cnt) > cur)) \
194	{ \	308	{ \
195	int newcnt = cur; \	309	int newcnt = cur; \
196	do \	310	do \
197	{ \	311	{ \
198	newcnt = array_roundsize (base, newcnt << 1); \	312	newcnt = array_roundsize (type, newcnt << 1); \
199	} \	313	} \
200	while ((cnt) > newcnt); \	314	while ((cnt) > newcnt); \
201	\	315	\
202	base = realloc (base, sizeof (base) (newcnt)); \	316	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
203	init (base + cur, newcnt - cur); \	317	init (base + cur, newcnt - cur); \
204	cur = newcnt; \	318	cur = newcnt; \
205	}	319	}
		320
		321	#define array_slim(type,stem) \
		322	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		323	{ \
		324	stem ## max = array_roundsize (stem ## cnt >> 1); \
		325	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		326	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		327	}
		328
		329	#define array_free(stem, idx) \
		330	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
206		331
207	/*****************************************************************************/	332	/*****************************************************************************/
208		333
209	static void	334	static void
210	anfds_init (ANFD *base, int count)	335	anfds_init (ANFD *base, int count)
…		…
217		342
218	++base;	343	++base;
219	}	344	}
220	}	345	}
221		346
222	static void	347	void
223	event (EV_P_ W w, int events)	348	ev_feed_event (EV_P_ void *w, int revents)
224	{	349	{
		350	W w_ = (W)w;
		351
225	if (w->pending)	352	if (w_->pending)
226	{	353	{
227	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	354	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
228	return;	355	return;
229	}	356	}
230		357
231	w->pending = ++pendingcnt [ABSPRI (w)];	358	w_->pending = ++pendingcnt [ABSPRI (w_)];
232	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	359	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
233	pendings [ABSPRI (w)][w->pending - 1].w = w;	360	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
234	pendings [ABSPRI (w)][w->pending - 1].events = events;	361	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
235	}	362	}
236		363
237	static void	364	static void
238	queue_events (EV_P_ W *events, int eventcnt, int type)	365	queue_events (EV_P_ W *events, int eventcnt, int type)
239	{	366	{
240	int i;	367	int i;
241		368
242	for (i = 0; i < eventcnt; ++i)	369	for (i = 0; i < eventcnt; ++i)
243	event (EV_A_ events [i], type);	370	ev_feed_event (EV_A_ events [i], type);
244	}	371	}
245		372
246	static void	373	inline void
247	fd_event (EV_P_ int fd, int events)	374	fd_event (EV_P_ int fd, int revents)
248	{	375	{
249	ANFD *anfd = anfds + fd;	376	ANFD *anfd = anfds + fd;
250	struct ev_io *w;	377	struct ev_io *w;
251		378
252	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	379	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
253	{	380	{
254	int ev = w->events & events;	381	int ev = w->events & revents;
255		382
256	if (ev)	383	if (ev)
257	event (EV_A_ (W)w, ev);	384	ev_feed_event (EV_A_ (W)w, ev);
258	}	385	}
		386	}
		387
		388	void
		389	ev_feed_fd_event (EV_P_ int fd, int revents)
		390	{
		391	fd_event (EV_A_ fd, revents);
259	}	392	}
260		393
261	/*****************************************************************************/	394	/*****************************************************************************/
262		395
263	static void	396	static void
…		…
274	int events = 0;	407	int events = 0;
275		408
276	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	409	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
277	events \|= w->events;	410	events \|= w->events;
278		411
		412	#if EV_SELECT_IS_WINSOCKET
		413	if (events)
		414	{
		415	unsigned long argp;
		416	anfd->handle = _get_osfhandle (fd);
		417	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		418	}
		419	#endif
		420
279	anfd->reify = 0;	421	anfd->reify = 0;
280		422
281	if (anfd->events != events)
282	{
283	method_modify (EV_A_ fd, anfd->events, events);	423	method_modify (EV_A_ fd, anfd->events, events);
284	anfd->events = events;	424	anfd->events = events;
285	}
286	}	425	}
287		426
288	fdchangecnt = 0;	427	fdchangecnt = 0;
289	}	428	}
290		429
291	static void	430	static void
292	fd_change (EV_P_ int fd)	431	fd_change (EV_P_ int fd)
293	{	432	{
294	if (anfds [fd].reify \|\| fdchangecnt < 0)	433	if (anfds [fd].reify)
295	return;	434	return;
296		435
297	anfds [fd].reify = 1;	436	anfds [fd].reify = 1;
298		437
299	++fdchangecnt;	438	++fdchangecnt;
300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	439	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
301	fdchanges [fdchangecnt - 1] = fd;	440	fdchanges [fdchangecnt - 1] = fd;
302	}	441	}
303		442
304	static void	443	static void
305	fd_kill (EV_P_ int fd)	444	fd_kill (EV_P_ int fd)
…		…
307	struct ev_io *w;	446	struct ev_io *w;
308		447
309	while ((w = (struct ev_io *)anfds [fd].head))	448	while ((w = (struct ev_io *)anfds [fd].head))
310	{	449	{
311	ev_io_stop (EV_A_ w);	450	ev_io_stop (EV_A_ w);
312	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	451	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
313	}	452	}
		453	}
		454
		455	static int
		456	fd_valid (int fd)
		457	{
		458	#ifdef _WIN32
		459	return _get_osfhandle (fd) != -1;
		460	#else
		461	return fcntl (fd, F_GETFD) != -1;
		462	#endif
314	}	463	}
315		464
316	/* called on EBADF to verify fds */	465	/* called on EBADF to verify fds */
317	static void	466	static void
318	fd_ebadf (EV_P)	467	fd_ebadf (EV_P)
319	{	468	{
320	int fd;	469	int fd;
321		470
322	for (fd = 0; fd < anfdmax; ++fd)	471	for (fd = 0; fd < anfdmax; ++fd)
323	if (anfds [fd].events)	472	if (anfds [fd].events)
324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	473	if (!fd_valid (fd) == -1 && errno == EBADF)
325	fd_kill (EV_A_ fd);	474	fd_kill (EV_A_ fd);
326	}	475	}
327		476
328	/* called on ENOMEM in select/poll to kill some fds and retry */	477	/* called on ENOMEM in select/poll to kill some fds and retry */
329	static void	478	static void
330	fd_enomem (EV_P)	479	fd_enomem (EV_P)
331	{	480	{
332	int fd = anfdmax;	481	int fd;
333		482
334	while (fd--)	483	for (fd = anfdmax; fd--; )
335	if (anfds [fd].events)	484	if (anfds [fd].events)
336	{	485	{
337	close (fd);
338	fd_kill (EV_A_ fd);	486	fd_kill (EV_A_ fd);
339	return;	487	return;
340	}	488	}
341	}	489	}
342		490
		491	/* usually called after fork if method needs to re-arm all fds from scratch */
		492	static void
		493	fd_rearm_all (EV_P)
		494	{
		495	int fd;
		496
		497	/* this should be highly optimised to not do anything but set a flag */
		498	for (fd = 0; fd < anfdmax; ++fd)
		499	if (anfds [fd].events)
		500	{
		501	anfds [fd].events = 0;
		502	fd_change (EV_A_ fd);
		503	}
		504	}
		505
343	/*****************************************************************************/	506	/*****************************************************************************/
344		507
345	static void	508	static void
346	upheap (WT *heap, int k)	509	upheap (WT *heap, int k)
347	{	510	{
348	WT w = heap [k];	511	WT w = heap [k];
349		512
350	while (k && heap [k >> 1]->at > w->at)	513	while (k && heap [k >> 1]->at > w->at)
351	{	514	{
352	heap [k] = heap [k >> 1];	515	heap [k] = heap [k >> 1];
353	heap [k]->active = k + 1;	516	((W)heap [k])->active = k + 1;
354	k >>= 1;	517	k >>= 1;
355	}	518	}
356		519
357	heap [k] = w;	520	heap [k] = w;
358	heap [k]->active = k + 1;	521	((W)heap [k])->active = k + 1;
359		522
360	}	523	}
361		524
362	static void	525	static void
363	downheap (WT *heap, int N, int k)	526	downheap (WT *heap, int N, int k)
…		…
373		536
374	if (w->at <= heap [j]->at)	537	if (w->at <= heap [j]->at)
375	break;	538	break;
376		539
377	heap [k] = heap [j];	540	heap [k] = heap [j];
378	heap [k]->active = k + 1;	541	((W)heap [k])->active = k + 1;
379	k = j;	542	k = j;
380	}	543	}
381		544
382	heap [k] = w;	545	heap [k] = w;
383	heap [k]->active = k + 1;	546	((W)heap [k])->active = k + 1;
		547	}
		548
		549	inline void
		550	adjustheap (WT *heap, int N, int k)
		551	{
		552	upheap (heap, k);
		553	downheap (heap, N, k);
384	}	554	}
385		555
386	/*****************************************************************************/	556	/*****************************************************************************/
387		557
388	typedef struct	558	typedef struct
389	{	559	{
390	struct ev_watcher_list *head;	560	WL head;
391	sig_atomic_t volatile gotsig;	561	sig_atomic_t volatile gotsig;
392	} ANSIG;	562	} ANSIG;
393		563
394	static ANSIG *signals;	564	static ANSIG *signals;
395	static int signalmax;	565	static int signalmax;
396		566
397	static int sigpipe [2];	567	static int sigpipe [2];
398	static sig_atomic_t volatile gotsig;	568	static sig_atomic_t volatile gotsig;
		569	static struct ev_io sigev;
399		570
400	static void	571	static void
401	signals_init (ANSIG *base, int count)	572	signals_init (ANSIG *base, int count)
402	{	573	{
403	while (count--)	574	while (count--)
…		…
410	}	581	}
411		582
412	static void	583	static void
413	sighandler (int signum)	584	sighandler (int signum)
414	{	585	{
		586	#if _WIN32
		587	signal (signum, sighandler);
		588	#endif
		589
415	signals [signum - 1].gotsig = 1;	590	signals [signum - 1].gotsig = 1;
416		591
417	if (!gotsig)	592	if (!gotsig)
418	{	593	{
419	int old_errno = errno;	594	int old_errno = errno;
…		…
421	write (sigpipe [1], &signum, 1);	596	write (sigpipe [1], &signum, 1);
422	errno = old_errno;	597	errno = old_errno;
423	}	598	}
424	}	599	}
425		600
		601	void
		602	ev_feed_signal_event (EV_P_ int signum)
		603	{
		604	WL w;
		605
		606	#if EV_MULTIPLICITY
		607	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		608	#endif
		609
		610	--signum;
		611
		612	if (signum < 0 \|\| signum >= signalmax)
		613	return;
		614
		615	signals [signum].gotsig = 0;
		616
		617	for (w = signals [signum].head; w; w = w->next)
		618	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		619	}
		620
426	static void	621	static void
427	sigcb (EV_P_ struct ev_io *iow, int revents)	622	sigcb (EV_P_ struct ev_io *iow, int revents)
428	{	623	{
429	struct ev_watcher_list *w;
430	int signum;	624	int signum;
431		625
432	read (sigpipe [0], &revents, 1);	626	read (sigpipe [0], &revents, 1);
433	gotsig = 0;	627	gotsig = 0;
434		628
435	for (signum = signalmax; signum--; )	629	for (signum = signalmax; signum--; )
436	if (signals [signum].gotsig)	630	if (signals [signum].gotsig)
437	{	631	ev_feed_signal_event (EV_A_ signum + 1);
438	signals [signum].gotsig = 0;	632	}
439		633
440	for (w = signals [signum].head; w; w = w->next)	634	inline void
441	event (EV_A_ (W)w, EV_SIGNAL);	635	fd_intern (int fd)
442	}	636	{
		637	#ifdef _WIN32
		638	int arg = 1;
		639	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		640	#else
		641	fcntl (fd, F_SETFD, FD_CLOEXEC);
		642	fcntl (fd, F_SETFL, O_NONBLOCK);
		643	#endif
443	}	644	}
444		645
445	static void	646	static void
446	siginit (EV_P)	647	siginit (EV_P)
447	{	648	{
448	#ifndef WIN32	649	fd_intern (sigpipe [0]);
449	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	650	fd_intern (sigpipe [1]);
450	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
451
452	/* rather than sort out wether we really need nb, set it */
453	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
454	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
455	#endif
456		651
457	ev_io_set (&sigev, sigpipe [0], EV_READ);	652	ev_io_set (&sigev, sigpipe [0], EV_READ);
458	ev_io_start (EV_A_ &sigev);	653	ev_io_start (EV_A_ &sigev);
459	ev_unref (EV_A); /* child watcher should not keep loop alive */	654	ev_unref (EV_A); /* child watcher should not keep loop alive */
460	}	655	}
461		656
462	/*****************************************************************************/	657	/*****************************************************************************/
463		658
		659	static struct ev_child *childs [PID_HASHSIZE];
		660
464	#ifndef WIN32	661	#ifndef _WIN32
		662
		663	static struct ev_signal childev;
465		664
466	#ifndef WCONTINUED	665	#ifndef WCONTINUED
467	# define WCONTINUED 0	666	# define WCONTINUED 0
468	#endif	667	#endif
469		668
…		…
473	struct ev_child *w;	672	struct ev_child *w;
474		673
475	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	674	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
476	if (w->pid == pid \|\| !w->pid)	675	if (w->pid == pid \|\| !w->pid)
477	{	676	{
478	w->priority = sw->priority; /* need to do it now */	677	ev_priority (w) = ev_priority (sw); /* need to do it now */
479	w->rpid = pid;	678	w->rpid = pid;
480	w->rstatus = status;	679	w->rstatus = status;
481	event (EV_A_ (W)w, EV_CHILD);	680	ev_feed_event (EV_A_ (W)w, EV_CHILD);
482	}	681	}
483	}	682	}
484		683
485	static void	684	static void
486	childcb (EV_P_ struct ev_signal *sw, int revents)	685	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
488	int pid, status;	687	int pid, status;
489		688
490	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	689	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
491	{	690	{
492	/* make sure we are called again until all childs have been reaped */	691	/* make sure we are called again until all childs have been reaped */
493	event (EV_A_ (W)sw, EV_SIGNAL);	692	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
494		693
495	child_reap (EV_A_ sw, pid, pid, status);	694	child_reap (EV_A_ sw, pid, pid, status);
496	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	695	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
497	}	696	}
498	}	697	}
…		…
505	# include "ev_kqueue.c"	704	# include "ev_kqueue.c"
506	#endif	705	#endif
507	#if EV_USE_EPOLL	706	#if EV_USE_EPOLL
508	# include "ev_epoll.c"	707	# include "ev_epoll.c"
509	#endif	708	#endif
510	#if EV_USEV_POLL	709	#if EV_USE_POLL
511	# include "ev_poll.c"	710	# include "ev_poll.c"
512	#endif	711	#endif
513	#if EV_USE_SELECT	712	#if EV_USE_SELECT
514	# include "ev_select.c"	713	# include "ev_select.c"
515	#endif	714	#endif
…		…
528		727
529	/* return true if we are running with elevated privileges and should ignore env variables */	728	/* return true if we are running with elevated privileges and should ignore env variables */
530	static int	729	static int
531	enable_secure (void)	730	enable_secure (void)
532	{	731	{
533	#ifdef WIN32	732	#ifdef _WIN32
534	return 0;	733	return 0;
535	#else	734	#else
536	return getuid () != geteuid ()	735	return getuid () != geteuid ()
537	\|\| getgid () != getegid ();	736	\|\| getgid () != getegid ();
538	#endif	737	#endif
…		…
555	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	754	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
556	have_monotonic = 1;	755	have_monotonic = 1;
557	}	756	}
558	#endif	757	#endif
559		758
560	rt_now = ev_time ();	759	ev_rt_now = ev_time ();
561	mn_now = get_clock ();	760	mn_now = get_clock ();
562	now_floor = mn_now;	761	now_floor = mn_now;
563	rtmn_diff = rt_now - mn_now;	762	rtmn_diff = ev_rt_now - mn_now;
564
565	if (pipe (sigpipe))
566	return 0;
567		763
568	if (methods == EVMETHOD_AUTO)	764	if (methods == EVMETHOD_AUTO)
569	if (!enable_secure () && getenv ("LIBmethodS"))	765	if (!enable_secure () && getenv ("LIBEV_METHODS"))
570	methods = atoi (getenv ("LIBmethodS"));	766	methods = atoi (getenv ("LIBEV_METHODS"));
571	else	767	else
572	methods = EVMETHOD_ANY;	768	methods = EVMETHOD_ANY;
573		769
574	method = 0;	770	method = 0;
575	#if EV_USE_KQUEUE	771	#if EV_USE_KQUEUE
576	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	772	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
577	#endif	773	#endif
578	#if EV_USE_EPOLL	774	#if EV_USE_EPOLL
579	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	775	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
580	#endif	776	#endif
581	#if EV_USEV_POLL	777	#if EV_USE_POLL
582	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	778	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
583	#endif	779	#endif
584	#if EV_USE_SELECT	780	#if EV_USE_SELECT
585	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	781	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
586	#endif	782	#endif
587		783
		784	ev_init (&sigev, sigcb);
		785	ev_set_priority (&sigev, EV_MAXPRI);
		786	}
		787	}
		788
		789	void
		790	loop_destroy (EV_P)
		791	{
		792	int i;
		793
		794	#if EV_USE_KQUEUE
		795	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		796	#endif
		797	#if EV_USE_EPOLL
		798	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		799	#endif
		800	#if EV_USE_POLL
		801	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		802	#endif
		803	#if EV_USE_SELECT
		804	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		805	#endif
		806
		807	for (i = NUMPRI; i--; )
		808	array_free (pending, [i]);
		809
		810	/* have to use the microsoft-never-gets-it-right macro */
		811	array_free (fdchange, EMPTY);
		812	array_free (timer, EMPTY);
		813	#if EV_PERIODICS
		814	array_free (periodic, EMPTY);
		815	#endif
		816	array_free (idle, EMPTY);
		817	array_free (prepare, EMPTY);
		818	array_free (check, EMPTY);
		819
		820	method = 0;
		821	}
		822
		823	static void
		824	loop_fork (EV_P)
		825	{
		826	#if EV_USE_EPOLL
		827	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		828	#endif
		829	#if EV_USE_KQUEUE
		830	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		831	#endif
		832
		833	if (ev_is_active (&sigev))
		834	{
		835	/* default loop */
		836
		837	ev_ref (EV_A);
		838	ev_io_stop (EV_A_ &sigev);
		839	close (sigpipe [0]);
		840	close (sigpipe [1]);
		841
		842	while (pipe (sigpipe))
		843	syserr ("(libev) error creating pipe");
		844
		845	siginit (EV_A);
		846	}
		847
		848	postfork = 0;
		849	}
		850
		851	#if EV_MULTIPLICITY
		852	struct ev_loop *
		853	ev_loop_new (int methods)
		854	{
		855	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		856
		857	memset (loop, 0, sizeof (struct ev_loop));
		858
		859	loop_init (EV_A_ methods);
		860
		861	if (ev_method (EV_A))
		862	return loop;
		863
		864	return 0;
		865	}
		866
		867	void
		868	ev_loop_destroy (EV_P)
		869	{
		870	loop_destroy (EV_A);
		871	ev_free (loop);
		872	}
		873
		874	void
		875	ev_loop_fork (EV_P)
		876	{
		877	postfork = 1;
		878	}
		879
		880	#endif
		881
		882	#if EV_MULTIPLICITY
		883	struct ev_loop *
		884	#else
		885	int
		886	#endif
		887	ev_default_loop (int methods)
		888	{
		889	if (sigpipe [0] == sigpipe [1])
		890	if (pipe (sigpipe))
		891	return 0;
		892
		893	if (!default_loop)
		894	{
		895	#if EV_MULTIPLICITY
		896	struct ev_loop *loop = default_loop = &default_loop_struct;
		897	#else
		898	default_loop = 1;
		899	#endif
		900
		901	loop_init (EV_A_ methods);
		902
588	if (method)	903	if (ev_method (EV_A))
589	{	904	{
590	ev_watcher_init (&sigev, sigcb);
591	ev_set_priority (&sigev, EV_MAXPRI);
592	siginit (EV_A);	905	siginit (EV_A);
593		906
594	#ifndef WIN32	907	#ifndef _WIN32
595	ev_signal_init (&childev, childcb, SIGCHLD);	908	ev_signal_init (&childev, childcb, SIGCHLD);
596	ev_set_priority (&childev, EV_MAXPRI);	909	ev_set_priority (&childev, EV_MAXPRI);
597	ev_signal_start (EV_A_ &childev);	910	ev_signal_start (EV_A_ &childev);
598	ev_unref (EV_A); /* child watcher should not keep loop alive */	911	ev_unref (EV_A); /* child watcher should not keep loop alive */
599	#endif	912	#endif
600	}	913	}
		914	else
		915	default_loop = 0;
601	}	916	}
602		917
603	return method;	918	return default_loop;
604	}	919	}
605		920
		921	void
		922	ev_default_destroy (void)
		923	{
606	#ifdef EV_MULTIPLICITY	924	#if EV_MULTIPLICITY
607		925	struct ev_loop *loop = default_loop;
608	struct ev_loop *
609	ev_loop_new (int methods)
610	{
611	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));
612
613	loop_init (EV_A_ methods);
614
615	return loop;
616	}
617
618	void
619	ev_loop_delete (EV_P)
620	{
621	/TODO/
622	free (loop);
623	}
624
625	#else
626
627	int
628	ev_init (int methods)
629	{
630	loop_init ();
631	}
632
633	#endif	926	#endif
		927
		928	#ifndef _WIN32
		929	ev_ref (EV_A); /* child watcher */
		930	ev_signal_stop (EV_A_ &childev);
		931	#endif
		932
		933	ev_ref (EV_A); /* signal watcher */
		934	ev_io_stop (EV_A_ &sigev);
		935
		936	close (sigpipe [0]); sigpipe [0] = 0;
		937	close (sigpipe [1]); sigpipe [1] = 0;
		938
		939	loop_destroy (EV_A);
		940	}
		941
		942	void
		943	ev_default_fork (void)
		944	{
		945	#if EV_MULTIPLICITY
		946	struct ev_loop *loop = default_loop;
		947	#endif
		948
		949	if (method)
		950	postfork = 1;
		951	}
634		952
635	/*****************************************************************************/	953	/*****************************************************************************/
636		954
637	void	955	static int
638	ev_fork_prepare (void)	956	any_pending (EV_P)
639	{	957	{
640	/* nop */	958	int pri;
641	}
642		959
643	void	960	for (pri = NUMPRI; pri--; )
644	ev_fork_parent (void)	961	if (pendingcnt [pri])
645	{	962	return 1;
646	/* nop */
647	}
648		963
649	void	964	return 0;
650	ev_fork_child (void)
651	{
652	/TODO/
653	#if !EV_MULTIPLICITY
654	#if EV_USE_EPOLL
655	if (method == EVMETHOD_EPOLL)
656	epoll_postfork_child (EV_A);
657	#endif
658
659	ev_io_stop (EV_A_ &sigev);
660	close (sigpipe [0]);
661	close (sigpipe [1]);
662	pipe (sigpipe);
663	siginit (EV_A);
664	#endif
665	}	965	}
666
667	/*****************************************************************************/
668		966
669	static void	967	static void
670	call_pending (EV_P)	968	call_pending (EV_P)
671	{	969	{
672	int pri;	970	int pri;
…		…
677	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	975	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
678		976
679	if (p->w)	977	if (p->w)
680	{	978	{
681	p->w->pending = 0;	979	p->w->pending = 0;
682	p->w->cb (EV_A_ p->w, p->events);	980	EV_CB_INVOKE (p->w, p->events);
683	}	981	}
684	}	982	}
685	}	983	}
686		984
687	static void	985	static void
688	timers_reify (EV_P)	986	timers_reify (EV_P)
689	{	987	{
690	while (timercnt && timers [0]->at <= mn_now)	988	while (timercnt && ((WT)timers [0])->at <= mn_now)
691	{	989	{
692	struct ev_timer *w = timers [0];	990	struct ev_timer *w = timers [0];
		991
		992	assert (("inactive timer on timer heap detected", ev_is_active (w)));
693		993
694	/* first reschedule or stop timer */	994	/* first reschedule or stop timer */
695	if (w->repeat)	995	if (w->repeat)
696	{	996	{
697	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	997	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		998
698	w->at = mn_now + w->repeat;	999	((WT)w)->at += w->repeat;
		1000	if (((WT)w)->at < mn_now)
		1001	((WT)w)->at = mn_now;
		1002
699	downheap ((WT *)timers, timercnt, 0);	1003	downheap ((WT *)timers, timercnt, 0);
700	}	1004	}
701	else	1005	else
702	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1006	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
703		1007
704	event (EV_A_ (W)w, EV_TIMEOUT);	1008	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
705	}	1009	}
706	}	1010	}
707		1011
		1012	#if EV_PERIODICS
708	static void	1013	static void
709	periodics_reify (EV_P)	1014	periodics_reify (EV_P)
710	{	1015	{
711	while (periodiccnt && periodics [0]->at <= rt_now)	1016	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
712	{	1017	{
713	struct ev_periodic *w = periodics [0];	1018	struct ev_periodic *w = periodics [0];
714		1019
		1020	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1021
715	/* first reschedule or stop timer */	1022	/* first reschedule or stop timer */
716	if (w->interval)	1023	if (w->reschedule_cb)
717	{	1024	{
		1025	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1026
		1027	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1028	downheap ((WT *)periodics, periodiccnt, 0);
		1029	}
		1030	else if (w->interval)
		1031	{
718	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1032	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
719	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1033	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
720	downheap ((WT *)periodics, periodiccnt, 0);	1034	downheap ((WT *)periodics, periodiccnt, 0);
721	}	1035	}
722	else	1036	else
723	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1037	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
724		1038
725	event (EV_A_ (W)w, EV_PERIODIC);	1039	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
726	}	1040	}
727	}	1041	}
728		1042
729	static void	1043	static void
730	periodics_reschedule (EV_P)	1044	periodics_reschedule (EV_P)
…		…
734	/* adjust periodics after time jump */	1048	/* adjust periodics after time jump */
735	for (i = 0; i < periodiccnt; ++i)	1049	for (i = 0; i < periodiccnt; ++i)
736	{	1050	{
737	struct ev_periodic *w = periodics [i];	1051	struct ev_periodic *w = periodics [i];
738		1052
		1053	if (w->reschedule_cb)
		1054	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
739	if (w->interval)	1055	else if (w->interval)
740	{
741	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1056	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
742
743	if (fabs (diff) >= 1e-4)
744	{
745	ev_periodic_stop (EV_A_ w);
746	ev_periodic_start (EV_A_ w);
747
748	i = 0; /* restart loop, inefficient, but time jumps should be rare */
749	}
750	}
751	}	1057	}
		1058
		1059	/* now rebuild the heap */
		1060	for (i = periodiccnt >> 1; i--; )
		1061	downheap ((WT *)periodics, periodiccnt, i);
752	}	1062	}
		1063	#endif
753		1064
754	inline int	1065	inline int
755	time_update_monotonic (EV_P)	1066	time_update_monotonic (EV_P)
756	{	1067	{
757	mn_now = get_clock ();	1068	mn_now = get_clock ();
758		1069
759	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1070	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
760	{	1071	{
761	rt_now = rtmn_diff + mn_now;	1072	ev_rt_now = rtmn_diff + mn_now;
762	return 0;	1073	return 0;
763	}	1074	}
764	else	1075	else
765	{	1076	{
766	now_floor = mn_now;	1077	now_floor = mn_now;
767	rt_now = ev_time ();	1078	ev_rt_now = ev_time ();
768	return 1;	1079	return 1;
769	}	1080	}
770	}	1081	}
771		1082
772	static void	1083	static void
…		…
781	{	1092	{
782	ev_tstamp odiff = rtmn_diff;	1093	ev_tstamp odiff = rtmn_diff;
783		1094
784	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1095	for (i = 4; --i; ) /* loop a few times, before making important decisions */
785	{	1096	{
786	rtmn_diff = rt_now - mn_now;	1097	rtmn_diff = ev_rt_now - mn_now;
787		1098
788	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1099	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
789	return; /* all is well */	1100	return; /* all is well */
790		1101
791	rt_now = ev_time ();	1102	ev_rt_now = ev_time ();
792	mn_now = get_clock ();	1103	mn_now = get_clock ();
793	now_floor = mn_now;	1104	now_floor = mn_now;
794	}	1105	}
795		1106
		1107	# if EV_PERIODICS
796	periodics_reschedule (EV_A);	1108	periodics_reschedule (EV_A);
		1109	# endif
797	/* no timer adjustment, as the monotonic clock doesn't jump */	1110	/* no timer adjustment, as the monotonic clock doesn't jump */
798	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1111	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
799	}	1112	}
800	}	1113	}
801	else	1114	else
802	#endif	1115	#endif
803	{	1116	{
804	rt_now = ev_time ();	1117	ev_rt_now = ev_time ();
805		1118
806	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1119	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
807	{	1120	{
		1121	#if EV_PERIODICS
808	periodics_reschedule (EV_A);	1122	periodics_reschedule (EV_A);
		1123	#endif
809		1124
810	/* adjust timers. this is easy, as the offset is the same for all */	1125	/* adjust timers. this is easy, as the offset is the same for all */
811	for (i = 0; i < timercnt; ++i)	1126	for (i = 0; i < timercnt; ++i)
812	timers [i]->at += rt_now - mn_now;	1127	((WT)timers [i])->at += ev_rt_now - mn_now;
813	}	1128	}
814		1129
815	mn_now = rt_now;	1130	mn_now = ev_rt_now;
816	}	1131	}
817	}	1132	}
818		1133
819	void	1134	void
820	ev_ref (EV_P)	1135	ev_ref (EV_P)
…		…
843	{	1158	{
844	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1159	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
845	call_pending (EV_A);	1160	call_pending (EV_A);
846	}	1161	}
847		1162
		1163	/* we might have forked, so reify kernel state if necessary */
		1164	if (expect_false (postfork))
		1165	loop_fork (EV_A);
		1166
848	/* update fd-related kernel structures */	1167	/* update fd-related kernel structures */
849	fd_reify (EV_A);	1168	fd_reify (EV_A);
850		1169
851	/* calculate blocking time */	1170	/* calculate blocking time */
852		1171
853	/* we only need this for !monotonic clockor timers, but as we basically	1172	/* we only need this for !monotonic clock or timers, but as we basically
854	always have timers, we just calculate it always */	1173	always have timers, we just calculate it always */
855	#if EV_USE_MONOTONIC	1174	#if EV_USE_MONOTONIC
856	if (expect_true (have_monotonic))	1175	if (expect_true (have_monotonic))
857	time_update_monotonic (EV_A);	1176	time_update_monotonic (EV_A);
858	else	1177	else
859	#endif	1178	#endif
860	{	1179	{
861	rt_now = ev_time ();	1180	ev_rt_now = ev_time ();
862	mn_now = rt_now;	1181	mn_now = ev_rt_now;
863	}	1182	}
864		1183
865	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1184	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
866	block = 0.;	1185	block = 0.;
867	else	1186	else
868	{	1187	{
869	block = MAX_BLOCKTIME;	1188	block = MAX_BLOCKTIME;
870		1189
871	if (timercnt)	1190	if (timercnt)
872	{	1191	{
873	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1192	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
874	if (block > to) block = to;	1193	if (block > to) block = to;
875	}	1194	}
876		1195
		1196	#if EV_PERIODICS
877	if (periodiccnt)	1197	if (periodiccnt)
878	{	1198	{
879	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1199	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
880	if (block > to) block = to;	1200	if (block > to) block = to;
881	}	1201	}
		1202	#endif
882		1203
883	if (block < 0.) block = 0.;	1204	if (block < 0.) block = 0.;
884	}	1205	}
885		1206
886	method_poll (EV_A_ block);	1207	method_poll (EV_A_ block);
887		1208
888	/* update rt_now, do magic */	1209	/* update ev_rt_now, do magic */
889	time_update (EV_A);	1210	time_update (EV_A);
890		1211
891	/* queue pending timers and reschedule them */	1212	/* queue pending timers and reschedule them */
892	timers_reify (EV_A); /* relative timers called last */	1213	timers_reify (EV_A); /* relative timers called last */
		1214	#if EV_PERIODICS
893	periodics_reify (EV_A); /* absolute timers called first */	1215	periodics_reify (EV_A); /* absolute timers called first */
		1216	#endif
894		1217
895	/* queue idle watchers unless io or timers are pending */	1218	/* queue idle watchers unless io or timers are pending */
896	if (!pendingcnt)	1219	if (idlecnt && !any_pending (EV_A))
897	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1220	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
898		1221
899	/* queue check watchers, to be executed first */	1222	/* queue check watchers, to be executed first */
900	if (checkcnt)	1223	if (checkcnt)
901	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1224	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
…		…
976	return;	1299	return;
977		1300
978	assert (("ev_io_start called with negative fd", fd >= 0));	1301	assert (("ev_io_start called with negative fd", fd >= 0));
979		1302
980	ev_start (EV_A_ (W)w, 1);	1303	ev_start (EV_A_ (W)w, 1);
981	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1304	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
982	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1305	wlist_add ((WL *)&anfds[fd].head, (WL)w);
983		1306
984	fd_change (EV_A_ fd);	1307	fd_change (EV_A_ fd);
985	}	1308	}
986		1309
…		…
989	{	1312	{
990	ev_clear_pending (EV_A_ (W)w);	1313	ev_clear_pending (EV_A_ (W)w);
991	if (!ev_is_active (w))	1314	if (!ev_is_active (w))
992	return;	1315	return;
993		1316
		1317	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1318
994	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1319	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
995	ev_stop (EV_A_ (W)w);	1320	ev_stop (EV_A_ (W)w);
996		1321
997	fd_change (EV_A_ w->fd);	1322	fd_change (EV_A_ w->fd);
998	}	1323	}
…		…
1001	ev_timer_start (EV_P_ struct ev_timer *w)	1326	ev_timer_start (EV_P_ struct ev_timer *w)
1002	{	1327	{
1003	if (ev_is_active (w))	1328	if (ev_is_active (w))
1004	return;	1329	return;
1005		1330
1006	w->at += mn_now;	1331	((WT)w)->at += mn_now;
1007		1332
1008	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1333	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1009		1334
1010	ev_start (EV_A_ (W)w, ++timercnt);	1335	ev_start (EV_A_ (W)w, ++timercnt);
1011	array_needsize (timers, timermax, timercnt, );	1336	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1012	timers [timercnt - 1] = w;	1337	timers [timercnt - 1] = w;
1013	upheap ((WT *)timers, timercnt - 1);	1338	upheap ((WT *)timers, timercnt - 1);
		1339
		1340	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1014	}	1341	}
1015		1342
1016	void	1343	void
1017	ev_timer_stop (EV_P_ struct ev_timer *w)	1344	ev_timer_stop (EV_P_ struct ev_timer *w)
1018	{	1345	{
1019	ev_clear_pending (EV_A_ (W)w);	1346	ev_clear_pending (EV_A_ (W)w);
1020	if (!ev_is_active (w))	1347	if (!ev_is_active (w))
1021	return;	1348	return;
1022		1349
		1350	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1351
1023	if (w->active < timercnt--)	1352	if (((W)w)->active < timercnt--)
1024	{	1353	{
1025	timers [w->active - 1] = timers [timercnt];	1354	timers [((W)w)->active - 1] = timers [timercnt];
1026	downheap ((WT *)timers, timercnt, w->active - 1);	1355	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1027	}	1356	}
1028		1357
1029	w->at = w->repeat;	1358	((WT)w)->at -= mn_now;
1030		1359
1031	ev_stop (EV_A_ (W)w);	1360	ev_stop (EV_A_ (W)w);
1032	}	1361	}
1033		1362
1034	void	1363	void
…		…
1036	{	1365	{
1037	if (ev_is_active (w))	1366	if (ev_is_active (w))
1038	{	1367	{
1039	if (w->repeat)	1368	if (w->repeat)
1040	{	1369	{
1041	w->at = mn_now + w->repeat;	1370	((WT)w)->at = mn_now + w->repeat;
1042	downheap ((WT *)timers, timercnt, w->active - 1);	1371	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1043	}	1372	}
1044	else	1373	else
1045	ev_timer_stop (EV_A_ w);	1374	ev_timer_stop (EV_A_ w);
1046	}	1375	}
1047	else if (w->repeat)	1376	else if (w->repeat)
1048	ev_timer_start (EV_A_ w);	1377	ev_timer_start (EV_A_ w);
1049	}	1378	}
1050		1379
		1380	#if EV_PERIODICS
1051	void	1381	void
1052	ev_periodic_start (EV_P_ struct ev_periodic *w)	1382	ev_periodic_start (EV_P_ struct ev_periodic *w)
1053	{	1383	{
1054	if (ev_is_active (w))	1384	if (ev_is_active (w))
1055	return;	1385	return;
1056		1386
		1387	if (w->reschedule_cb)
		1388	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1389	else if (w->interval)
		1390	{
1057	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1391	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1058
1059	/* this formula differs from the one in periodic_reify because we do not always round up */	1392	/* this formula differs from the one in periodic_reify because we do not always round up */
1060	if (w->interval)
1061	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1393	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1394	}
1062		1395
1063	ev_start (EV_A_ (W)w, ++periodiccnt);	1396	ev_start (EV_A_ (W)w, ++periodiccnt);
1064	array_needsize (periodics, periodicmax, periodiccnt, );	1397	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1065	periodics [periodiccnt - 1] = w;	1398	periodics [periodiccnt - 1] = w;
1066	upheap ((WT *)periodics, periodiccnt - 1);	1399	upheap ((WT *)periodics, periodiccnt - 1);
		1400
		1401	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1067	}	1402	}
1068		1403
1069	void	1404	void
1070	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1405	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1071	{	1406	{
1072	ev_clear_pending (EV_A_ (W)w);	1407	ev_clear_pending (EV_A_ (W)w);
1073	if (!ev_is_active (w))	1408	if (!ev_is_active (w))
1074	return;	1409	return;
1075		1410
		1411	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1412
1076	if (w->active < periodiccnt--)	1413	if (((W)w)->active < periodiccnt--)
1077	{	1414	{
1078	periodics [w->active - 1] = periodics [periodiccnt];	1415	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1079	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1416	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1080	}	1417	}
1081		1418
		1419	ev_stop (EV_A_ (W)w);
		1420	}
		1421
		1422	void
		1423	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1424	{
		1425	/* TODO: use adjustheap and recalculation */
		1426	ev_periodic_stop (EV_A_ w);
		1427	ev_periodic_start (EV_A_ w);
		1428	}
		1429	#endif
		1430
		1431	void
		1432	ev_idle_start (EV_P_ struct ev_idle *w)
		1433	{
		1434	if (ev_is_active (w))
		1435	return;
		1436
		1437	ev_start (EV_A_ (W)w, ++idlecnt);
		1438	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1439	idles [idlecnt - 1] = w;
		1440	}
		1441
		1442	void
		1443	ev_idle_stop (EV_P_ struct ev_idle *w)
		1444	{
		1445	ev_clear_pending (EV_A_ (W)w);
		1446	if (!ev_is_active (w))
		1447	return;
		1448
		1449	idles [((W)w)->active - 1] = idles [--idlecnt];
		1450	ev_stop (EV_A_ (W)w);
		1451	}
		1452
		1453	void
		1454	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1455	{
		1456	if (ev_is_active (w))
		1457	return;
		1458
		1459	ev_start (EV_A_ (W)w, ++preparecnt);
		1460	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1461	prepares [preparecnt - 1] = w;
		1462	}
		1463
		1464	void
		1465	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1466	{
		1467	ev_clear_pending (EV_A_ (W)w);
		1468	if (!ev_is_active (w))
		1469	return;
		1470
		1471	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1472	ev_stop (EV_A_ (W)w);
		1473	}
		1474
		1475	void
		1476	ev_check_start (EV_P_ struct ev_check *w)
		1477	{
		1478	if (ev_is_active (w))
		1479	return;
		1480
		1481	ev_start (EV_A_ (W)w, ++checkcnt);
		1482	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1483	checks [checkcnt - 1] = w;
		1484	}
		1485
		1486	void
		1487	ev_check_stop (EV_P_ struct ev_check *w)
		1488	{
		1489	ev_clear_pending (EV_A_ (W)w);
		1490	if (!ev_is_active (w))
		1491	return;
		1492
		1493	checks [((W)w)->active - 1] = checks [--checkcnt];
1082	ev_stop (EV_A_ (W)w);	1494	ev_stop (EV_A_ (W)w);
1083	}	1495	}
1084		1496
1085	#ifndef SA_RESTART	1497	#ifndef SA_RESTART
1086	# define SA_RESTART 0	1498	# define SA_RESTART 0
1087	#endif	1499	#endif
1088		1500
1089	void	1501	void
1090	ev_signal_start (EV_P_ struct ev_signal *w)	1502	ev_signal_start (EV_P_ struct ev_signal *w)
1091	{	1503	{
		1504	#if EV_MULTIPLICITY
		1505	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1506	#endif
1092	if (ev_is_active (w))	1507	if (ev_is_active (w))
1093	return;	1508	return;
1094		1509
1095	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1510	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1096		1511
1097	ev_start (EV_A_ (W)w, 1);	1512	ev_start (EV_A_ (W)w, 1);
1098	array_needsize (signals, signalmax, w->signum, signals_init);	1513	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1099	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1514	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1100		1515
1101	if (!w->next)	1516	if (!((WL)w)->next)
1102	{	1517	{
		1518	#if _WIN32
		1519	signal (w->signum, sighandler);
		1520	#else
1103	struct sigaction sa;	1521	struct sigaction sa;
1104	sa.sa_handler = sighandler;	1522	sa.sa_handler = sighandler;
1105	sigfillset (&sa.sa_mask);	1523	sigfillset (&sa.sa_mask);
1106	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1524	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1107	sigaction (w->signum, &sa, 0);	1525	sigaction (w->signum, &sa, 0);
		1526	#endif
1108	}	1527	}
1109	}	1528	}
1110		1529
1111	void	1530	void
1112	ev_signal_stop (EV_P_ struct ev_signal *w)	1531	ev_signal_stop (EV_P_ struct ev_signal *w)
…		…
1121	if (!signals [w->signum - 1].head)	1540	if (!signals [w->signum - 1].head)
1122	signal (w->signum, SIG_DFL);	1541	signal (w->signum, SIG_DFL);
1123	}	1542	}
1124		1543
1125	void	1544	void
1126	ev_idle_start (EV_P_ struct ev_idle *w)
1127	{
1128	if (ev_is_active (w))
1129	return;
1130
1131	ev_start (EV_A_ (W)w, ++idlecnt);
1132	array_needsize (idles, idlemax, idlecnt, );
1133	idles [idlecnt - 1] = w;
1134	}
1135
1136	void
1137	ev_idle_stop (EV_P_ struct ev_idle *w)
1138	{
1139	ev_clear_pending (EV_A_ (W)w);
1140	if (ev_is_active (w))
1141	return;
1142
1143	idles [w->active - 1] = idles [--idlecnt];
1144	ev_stop (EV_A_ (W)w);
1145	}
1146
1147	void
1148	ev_prepare_start (EV_P_ struct ev_prepare *w)
1149	{
1150	if (ev_is_active (w))
1151	return;
1152
1153	ev_start (EV_A_ (W)w, ++preparecnt);
1154	array_needsize (prepares, preparemax, preparecnt, );
1155	prepares [preparecnt - 1] = w;
1156	}
1157
1158	void
1159	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1160	{
1161	ev_clear_pending (EV_A_ (W)w);
1162	if (ev_is_active (w))
1163	return;
1164
1165	prepares [w->active - 1] = prepares [--preparecnt];
1166	ev_stop (EV_A_ (W)w);
1167	}
1168
1169	void
1170	ev_check_start (EV_P_ struct ev_check *w)
1171	{
1172	if (ev_is_active (w))
1173	return;
1174
1175	ev_start (EV_A_ (W)w, ++checkcnt);
1176	array_needsize (checks, checkmax, checkcnt, );
1177	checks [checkcnt - 1] = w;
1178	}
1179
1180	void
1181	ev_check_stop (EV_P_ struct ev_check *w)
1182	{
1183	ev_clear_pending (EV_A_ (W)w);
1184	if (ev_is_active (w))
1185	return;
1186
1187	checks [w->active - 1] = checks [--checkcnt];
1188	ev_stop (EV_A_ (W)w);
1189	}
1190
1191	void
1192	ev_child_start (EV_P_ struct ev_child *w)	1545	ev_child_start (EV_P_ struct ev_child *w)
1193	{	1546	{
		1547	#if EV_MULTIPLICITY
		1548	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1549	#endif
1194	if (ev_is_active (w))	1550	if (ev_is_active (w))
1195	return;	1551	return;
1196		1552
1197	ev_start (EV_A_ (W)w, 1);	1553	ev_start (EV_A_ (W)w, 1);
1198	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1554	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
…		…
1200		1556
1201	void	1557	void
1202	ev_child_stop (EV_P_ struct ev_child *w)	1558	ev_child_stop (EV_P_ struct ev_child *w)
1203	{	1559	{
1204	ev_clear_pending (EV_A_ (W)w);	1560	ev_clear_pending (EV_A_ (W)w);
1205	if (ev_is_active (w))	1561	if (!ev_is_active (w))
1206	return;	1562	return;
1207		1563
1208	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1564	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1209	ev_stop (EV_A_ (W)w);	1565	ev_stop (EV_A_ (W)w);
1210	}	1566	}
…		…
1225	void (cb)(int revents, void arg) = once->cb;	1581	void (cb)(int revents, void arg) = once->cb;
1226	void *arg = once->arg;	1582	void *arg = once->arg;
1227		1583
1228	ev_io_stop (EV_A_ &once->io);	1584	ev_io_stop (EV_A_ &once->io);
1229	ev_timer_stop (EV_A_ &once->to);	1585	ev_timer_stop (EV_A_ &once->to);
1230	free (once);	1586	ev_free (once);
1231		1587
1232	cb (revents, arg);	1588	cb (revents, arg);
1233	}	1589	}
1234		1590
1235	static void	1591	static void
…		…
1245	}	1601	}
1246		1602
1247	void	1603	void
1248	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1604	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1249	{	1605	{
1250	struct ev_once *once = malloc (sizeof (struct ev_once));	1606	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1251		1607
1252	if (!once)	1608	if (!once)
1253	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1609	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1254	else	1610	else
1255	{	1611	{
1256	once->cb = cb;	1612	once->cb = cb;
1257	once->arg = arg;	1613	once->arg = arg;
1258		1614
1259	ev_watcher_init (&once->io, once_cb_io);	1615	ev_init (&once->io, once_cb_io);
1260	if (fd >= 0)	1616	if (fd >= 0)
1261	{	1617	{
1262	ev_io_set (&once->io, fd, events);	1618	ev_io_set (&once->io, fd, events);
1263	ev_io_start (EV_A_ &once->io);	1619	ev_io_start (EV_A_ &once->io);
1264	}	1620	}
1265		1621
1266	ev_watcher_init (&once->to, once_cb_to);	1622	ev_init (&once->to, once_cb_to);
1267	if (timeout >= 0.)	1623	if (timeout >= 0.)
1268	{	1624	{
1269	ev_timer_set (&once->to, timeout, 0.);	1625	ev_timer_set (&once->to, timeout, 0.);
1270	ev_timer_start (EV_A_ &once->to);	1626	ev_timer_start (EV_A_ &once->to);
1271	}	1627	}
1272	}	1628	}
1273	}	1629	}
1274		1630
1275	/*****************************************************************************/	1631	#ifdef __cplusplus
1276
1277	#if 0
1278
1279	struct ev_io wio;
1280
1281	static void
1282	sin_cb (struct ev_io *w, int revents)
1283	{
1284	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1285	}	1632	}
1286
1287	static void
1288	ocb (struct ev_timer *w, int revents)
1289	{
1290	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1291	ev_timer_stop (w);
1292	ev_timer_start (w);
1293	}
1294
1295	static void
1296	scb (struct ev_signal *w, int revents)
1297	{
1298	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1299	ev_io_stop (&wio);
1300	ev_io_start (&wio);
1301	}
1302
1303	static void
1304	gcb (struct ev_signal *w, int revents)
1305	{
1306	fprintf (stderr, "generic %x\n", revents);
1307
1308	}
1309
1310	int main (void)
1311	{
1312	ev_init (0);
1313
1314	ev_io_init (&wio, sin_cb, 0, EV_READ);
1315	ev_io_start (&wio);
1316
1317	struct ev_timer t[10000];
1318
1319	#if 0
1320	int i;
1321	for (i = 0; i < 10000; ++i)
1322	{
1323	struct ev_timer *w = t + i;
1324	ev_watcher_init (w, ocb, i);
1325	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1326	ev_timer_start (w);
1327	if (drand48 () < 0.5)
1328	ev_timer_stop (w);
1329	}
1330	#endif	1633	#endif
1331		1634
1332	struct ev_timer t1;
1333	ev_timer_init (&t1, ocb, 5, 10);
1334	ev_timer_start (&t1);
1335
1336	struct ev_signal sig;
1337	ev_signal_init (&sig, scb, SIGQUIT);
1338	ev_signal_start (&sig);
1339
1340	struct ev_check cw;
1341	ev_check_init (&cw, gcb);
1342	ev_check_start (&cw);
1343
1344	struct ev_idle iw;
1345	ev_idle_init (&iw, gcb);
1346	ev_idle_start (&iw);
1347
1348	ev_loop (0);
1349
1350	return 0;
1351	}
1352
1353	#endif
1354
1355
1356
1357

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Comparing libev/ev.c (file contents): Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC vs. Revision 1.103 by root, Mon Nov 12 00:31:08 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC vs.
Revision 1.103 by root, Mon Nov 12 00:31:08 2007 UTC