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

Comparing libev/ev.c (file contents):
Revision 1.42 by root, Fri Nov 2 20:05:05 2007 UTC vs.
Revision 1.58 by root, Sun Nov 4 16:52:52 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	#if EV_USE_CONFIG_H	31	#ifndef EV_EMBED
32	# include "config.h"	32	# include "config.h"
33	#endif	33	#endif
34		34
35	#include <math.h>	35	#include <math.h>
36	#include <stdlib.h>	36	#include <stdlib.h>
…		…
42	#include <stdio.h>	42	#include <stdio.h>
43		43
44	#include <assert.h>	44	#include <assert.h>
45	#include <errno.h>	45	#include <errno.h>
46	#include <sys/types.h>	46	#include <sys/types.h>
		47	#ifndef WIN32
47	#include <sys/wait.h>	48	# include <sys/wait.h>
		49	#endif
48	#include <sys/time.h>	50	#include <sys/time.h>
49	#include <time.h>	51	#include <time.h>
50		52
51	/**/	53	/**/
52		54
…		…
56		58
57	#ifndef EV_USE_SELECT	59	#ifndef EV_USE_SELECT
58	# define EV_USE_SELECT 1	60	# define EV_USE_SELECT 1
59	#endif	61	#endif
60		62
61	#ifndef EV_USE_POLL	63	#ifndef EV_USEV_POLL
62	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */
63	#endif	65	#endif
64		66
65	#ifndef EV_USE_EPOLL	67	#ifndef EV_USE_EPOLL
66	# define EV_USE_EPOLL 0	68	# define EV_USE_EPOLL 0
		69	#endif
		70
		71	#ifndef EV_USE_KQUEUE
		72	# define EV_USE_KQUEUE 0
67	#endif	73	#endif
68		74
69	#ifndef EV_USE_REALTIME	75	#ifndef EV_USE_REALTIME
70	# define EV_USE_REALTIME 1	76	# define EV_USE_REALTIME 1
71	#endif	77	#endif
…		…
87	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
88	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
89	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
90	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	96	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
91		97
		98	#ifndef EV_EMBED
92	#include "ev.h"	99	# include "ev.h"
		100	#endif
93		101
94	#if __GNUC__ >= 3	102	#if __GNUC__ >= 3
95	# define expect(expr,value) __builtin_expect ((expr),(value))	103	# define expect(expr,value) __builtin_expect ((expr),(value))
96	# define inline inline	104	# define inline inline
97	#else	105	#else
…		…
107		115
108	typedef struct ev_watcher *W;	116	typedef struct ev_watcher *W;
109	typedef struct ev_watcher_list *WL;	117	typedef struct ev_watcher_list *WL;
110	typedef struct ev_watcher_time *WT;	118	typedef struct ev_watcher_time *WT;
111		119
112	static ev_tstamp now_floor, now, diff; /* monotonic clock */	120	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
113	ev_tstamp ev_now;
114	int ev_method;
115
116	static int have_monotonic; /* runtime */
117
118	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
119	static void (*method_modify)(int fd, int oev, int nev);
120	static void (*method_poll)(ev_tstamp timeout);
121		121
122	/*****************************************************************************/	122	/*****************************************************************************/
123		123
124	ev_tstamp	124	typedef struct
		125	{
		126	struct ev_watcher_list *head;
		127	unsigned char events;
		128	unsigned char reify;
		129	} ANFD;
		130
		131	typedef struct
		132	{
		133	W w;
		134	int events;
		135	} ANPENDING;
		136
		137	#if EV_MULTIPLICITY
		138
		139	struct ev_loop
		140	{
		141	# define VAR(name,decl) decl;
		142	# include "ev_vars.h"
		143	};
		144	# undef VAR
		145	# include "ev_wrap.h"
		146
		147	#else
		148
		149	# define VAR(name,decl) static decl;
		150	# include "ev_vars.h"
		151	# undef VAR
		152
		153	#endif
		154
		155	/*****************************************************************************/
		156
		157	inline ev_tstamp
125	ev_time (void)	158	ev_time (void)
126	{	159	{
127	#if EV_USE_REALTIME	160	#if EV_USE_REALTIME
128	struct timespec ts;	161	struct timespec ts;
129	clock_gettime (CLOCK_REALTIME, &ts);	162	clock_gettime (CLOCK_REALTIME, &ts);
…		…
133	gettimeofday (&tv, 0);	166	gettimeofday (&tv, 0);
134	return tv.tv_sec + tv.tv_usec * 1e-6;	167	return tv.tv_sec + tv.tv_usec * 1e-6;
135	#endif	168	#endif
136	}	169	}
137		170
138	static ev_tstamp	171	inline ev_tstamp
139	get_clock (void)	172	get_clock (void)
140	{	173	{
141	#if EV_USE_MONOTONIC	174	#if EV_USE_MONOTONIC
142	if (expect_true (have_monotonic))	175	if (expect_true (have_monotonic))
143	{	176	{
…		…
146	return ts.tv_sec + ts.tv_nsec * 1e-9;	179	return ts.tv_sec + ts.tv_nsec * 1e-9;
147	}	180	}
148	#endif	181	#endif
149		182
150	return ev_time ();	183	return ev_time ();
		184	}
		185
		186	ev_tstamp
		187	ev_now (EV_P)
		188	{
		189	return rt_now;
151	}	190	}
152		191
153	#define array_roundsize(base,n) ((n) \| 4 & ~3)	192	#define array_roundsize(base,n) ((n) \| 4 & ~3)
154		193
155	#define array_needsize(base,cur,cnt,init) \	194	#define array_needsize(base,cur,cnt,init) \
…		…
167	cur = newcnt; \	206	cur = newcnt; \
168	}	207	}
169		208
170	/*****************************************************************************/	209	/*****************************************************************************/
171		210
172	typedef struct
173	{
174	struct ev_io *head;
175	unsigned char events;
176	unsigned char reify;
177	} ANFD;
178
179	static ANFD *anfds;
180	static int anfdmax;
181
182	static void	211	static void
183	anfds_init (ANFD *base, int count)	212	anfds_init (ANFD *base, int count)
184	{	213	{
185	while (count--)	214	while (count--)
186	{	215	{
…		…
190		219
191	++base;	220	++base;
192	}	221	}
193	}	222	}
194		223
195	typedef struct
196	{
197	W w;
198	int events;
199	} ANPENDING;
200
201	static ANPENDING *pendings [NUMPRI];
202	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
203
204	static void	224	static void
205	event (W w, int events)	225	event (EV_P_ W w, int events)
206	{	226	{
207	if (w->pending)	227	if (w->pending)
208	{	228	{
209	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	229	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
210	return;	230	return;
…		…
215	pendings [ABSPRI (w)][w->pending - 1].w = w;	235	pendings [ABSPRI (w)][w->pending - 1].w = w;
216	pendings [ABSPRI (w)][w->pending - 1].events = events;	236	pendings [ABSPRI (w)][w->pending - 1].events = events;
217	}	237	}
218		238
219	static void	239	static void
220	queue_events (W *events, int eventcnt, int type)	240	queue_events (EV_P_ W *events, int eventcnt, int type)
221	{	241	{
222	int i;	242	int i;
223		243
224	for (i = 0; i < eventcnt; ++i)	244	for (i = 0; i < eventcnt; ++i)
225	event (events [i], type);	245	event (EV_A_ events [i], type);
226	}	246	}
227		247
228	static void	248	static void
229	fd_event (int fd, int events)	249	fd_event (EV_P_ int fd, int events)
230	{	250	{
231	ANFD *anfd = anfds + fd;	251	ANFD *anfd = anfds + fd;
232	struct ev_io *w;	252	struct ev_io *w;
233		253
234	for (w = anfd->head; w; w = w->next)	254	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
235	{	255	{
236	int ev = w->events & events;	256	int ev = w->events & events;
237		257
238	if (ev)	258	if (ev)
239	event ((W)w, ev);	259	event (EV_A_ (W)w, ev);
240	}	260	}
241	}	261	}
242		262
243	/*****************************************************************************/	263	/*****************************************************************************/
244		264
245	static int *fdchanges;
246	static int fdchangemax, fdchangecnt;
247
248	static void	265	static void
249	fd_reify (void)	266	fd_reify (EV_P)
250	{	267	{
251	int i;	268	int i;
252		269
253	for (i = 0; i < fdchangecnt; ++i)	270	for (i = 0; i < fdchangecnt; ++i)
254	{	271	{
…		…
256	ANFD *anfd = anfds + fd;	273	ANFD *anfd = anfds + fd;
257	struct ev_io *w;	274	struct ev_io *w;
258		275
259	int events = 0;	276	int events = 0;
260		277
261	for (w = anfd->head; w; w = w->next)	278	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
262	events \|= w->events;	279	events \|= w->events;
263		280
264	anfd->reify = 0;	281	anfd->reify = 0;
265		282
266	if (anfd->events != events)	283	if (anfd->events != events)
267	{	284	{
268	method_modify (fd, anfd->events, events);	285	method_modify (EV_A_ fd, anfd->events, events);
269	anfd->events = events;	286	anfd->events = events;
270	}	287	}
271	}	288	}
272		289
273	fdchangecnt = 0;	290	fdchangecnt = 0;
274	}	291	}
275		292
276	static void	293	static void
277	fd_change (int fd)	294	fd_change (EV_P_ int fd)
278	{	295	{
279	if (anfds [fd].reify \|\| fdchangecnt < 0)	296	if (anfds [fd].reify \|\| fdchangecnt < 0)
280	return;	297	return;
281		298
282	anfds [fd].reify = 1;	299	anfds [fd].reify = 1;
…		…
285	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	302	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
286	fdchanges [fdchangecnt - 1] = fd;	303	fdchanges [fdchangecnt - 1] = fd;
287	}	304	}
288		305
289	static void	306	static void
290	fd_kill (int fd)	307	fd_kill (EV_P_ int fd)
291	{	308	{
292	struct ev_io *w;	309	struct ev_io *w;
293		310
294	printf ("killing fd %d\n", fd);//D
295	while ((w = anfds [fd].head))	311	while ((w = (struct ev_io *)anfds [fd].head))
296	{	312	{
297	ev_io_stop (w);	313	ev_io_stop (EV_A_ w);
298	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	314	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
299	}	315	}
300	}	316	}
301		317
302	/* called on EBADF to verify fds */	318	/* called on EBADF to verify fds */
303	static void	319	static void
304	fd_ebadf (void)	320	fd_ebadf (EV_P)
305	{	321	{
306	int fd;	322	int fd;
307		323
308	for (fd = 0; fd < anfdmax; ++fd)	324	for (fd = 0; fd < anfdmax; ++fd)
309	if (anfds [fd].events)	325	if (anfds [fd].events)
310	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	326	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
311	fd_kill (fd);	327	fd_kill (EV_A_ fd);
312	}	328	}
313		329
314	/* called on ENOMEM in select/poll to kill some fds and retry */	330	/* called on ENOMEM in select/poll to kill some fds and retry */
315	static void	331	static void
316	fd_enomem (void)	332	fd_enomem (EV_P)
317	{	333	{
318	int fd = anfdmax;	334	int fd = anfdmax;
319		335
320	while (fd--)	336	while (fd--)
321	if (anfds [fd].events)	337	if (anfds [fd].events)
322	{	338	{
323	close (fd);	339	close (fd);
324	fd_kill (fd);	340	fd_kill (EV_A_ fd);
325	return;	341	return;
326	}	342	}
327	}	343	}
328		344
		345	/* susually called after fork if method needs to re-arm all fds from scratch */
		346	static void
		347	fd_rearm_all (EV_P)
		348	{
		349	int fd;
		350
		351	/* this should be highly optimised to not do anything but set a flag */
		352	for (fd = 0; fd < anfdmax; ++fd)
		353	if (anfds [fd].events)
		354	{
		355	anfds [fd].events = 0;
		356	fd_change (fd);
		357	}
		358	}
		359
329	/*****************************************************************************/	360	/*****************************************************************************/
330		361
331	static struct ev_timer **timers;
332	static int timermax, timercnt;
333
334	static struct ev_periodic **periodics;
335	static int periodicmax, periodiccnt;
336
337	static void	362	static void
338	upheap (WT *timers, int k)	363	upheap (WT *heap, int k)
339	{	364	{
340	WT w = timers [k];	365	WT w = heap [k];
341		366
342	while (k && timers [k >> 1]->at > w->at)	367	while (k && heap [k >> 1]->at > w->at)
343	{	368	{
344	timers [k] = timers [k >> 1];	369	heap [k] = heap [k >> 1];
345	timers [k]->active = k + 1;	370	heap [k]->active = k + 1;
346	k >>= 1;	371	k >>= 1;
347	}	372	}
348		373
349	timers [k] = w;	374	heap [k] = w;
350	timers [k]->active = k + 1;	375	heap [k]->active = k + 1;
351		376
352	}	377	}
353		378
354	static void	379	static void
355	downheap (WT *timers, int N, int k)	380	downheap (WT *heap, int N, int k)
356	{	381	{
357	WT w = timers [k];	382	WT w = heap [k];
358		383
359	while (k < (N >> 1))	384	while (k < (N >> 1))
360	{	385	{
361	int j = k << 1;	386	int j = k << 1;
362		387
363	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	388	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
364	++j;	389	++j;
365		390
366	if (w->at <= timers [j]->at)	391	if (w->at <= heap [j]->at)
367	break;	392	break;
368		393
369	timers [k] = timers [j];	394	heap [k] = heap [j];
370	timers [k]->active = k + 1;	395	heap [k]->active = k + 1;
371	k = j;	396	k = j;
372	}	397	}
373		398
374	timers [k] = w;	399	heap [k] = w;
375	timers [k]->active = k + 1;	400	heap [k]->active = k + 1;
376	}	401	}
377		402
378	/*****************************************************************************/	403	/*****************************************************************************/
379		404
380	typedef struct	405	typedef struct
381	{	406	{
382	struct ev_signal *head;	407	struct ev_watcher_list *head;
383	sig_atomic_t volatile gotsig;	408	sig_atomic_t volatile gotsig;
384	} ANSIG;	409	} ANSIG;
385		410
386	static ANSIG *signals;	411	static ANSIG *signals;
387	static int signalmax;	412	static int signalmax;
388		413
389	static int sigpipe [2];	414	static int sigpipe [2];
390	static sig_atomic_t volatile gotsig;	415	static sig_atomic_t volatile gotsig;
391	static struct ev_io sigev;
392		416
393	static void	417	static void
394	signals_init (ANSIG *base, int count)	418	signals_init (ANSIG *base, int count)
395	{	419	{
396	while (count--)	420	while (count--)
…		…
407	{	431	{
408	signals [signum - 1].gotsig = 1;	432	signals [signum - 1].gotsig = 1;
409		433
410	if (!gotsig)	434	if (!gotsig)
411	{	435	{
		436	int old_errno = errno;
412	gotsig = 1;	437	gotsig = 1;
413	write (sigpipe [1], &signum, 1);	438	write (sigpipe [1], &signum, 1);
		439	errno = old_errno;
414	}	440	}
415	}	441	}
416		442
417	static void	443	static void
418	sigcb (struct ev_io *iow, int revents)	444	sigcb (EV_P_ struct ev_io *iow, int revents)
419	{	445	{
420	struct ev_signal *w;	446	struct ev_watcher_list *w;
421	int signum;	447	int signum;
422		448
423	read (sigpipe [0], &revents, 1);	449	read (sigpipe [0], &revents, 1);
424	gotsig = 0;	450	gotsig = 0;
425		451
…		…
427	if (signals [signum].gotsig)	453	if (signals [signum].gotsig)
428	{	454	{
429	signals [signum].gotsig = 0;	455	signals [signum].gotsig = 0;
430		456
431	for (w = signals [signum].head; w; w = w->next)	457	for (w = signals [signum].head; w; w = w->next)
432	event ((W)w, EV_SIGNAL);	458	event (EV_A_ (W)w, EV_SIGNAL);
433	}	459	}
434	}	460	}
435		461
436	static void	462	static void
437	siginit (void)	463	siginit (EV_P)
438	{	464	{
		465	#ifndef WIN32
439	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	466	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
440	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	467	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
441		468
442	/* rather than sort out wether we really need nb, set it */	469	/* rather than sort out wether we really need nb, set it */
443	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	470	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
444	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	471	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		472	#endif
445		473
446	ev_io_set (&sigev, sigpipe [0], EV_READ);	474	ev_io_set (&sigev, sigpipe [0], EV_READ);
447	ev_io_start (&sigev);	475	ev_io_start (EV_A_ &sigev);
		476	ev_unref (EV_A); /* child watcher should not keep loop alive */
448	}	477	}
449		478
450	/*****************************************************************************/	479	/*****************************************************************************/
451		480
452	static struct ev_idle **idles;	481	#ifndef WIN32
453	static int idlemax, idlecnt;
454
455	static struct ev_prepare **prepares;
456	static int preparemax, preparecnt;
457
458	static struct ev_check **checks;
459	static int checkmax, checkcnt;
460
461	/*****************************************************************************/
462
463	static struct ev_child *childs [PID_HASHSIZE];
464	static struct ev_signal childev;
465		482
466	#ifndef WCONTINUED	483	#ifndef WCONTINUED
467	# define WCONTINUED 0	484	# define WCONTINUED 0
468	#endif	485	#endif
469		486
470	static void	487	static void
471	childcb (struct ev_signal *sw, int revents)	488	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
472	{	489	{
473	struct ev_child *w;	490	struct ev_child *w;
		491
		492	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		493	if (w->pid == pid \|\| !w->pid)
		494	{
		495	w->priority = sw->priority; /* need to do it now */
		496	w->rpid = pid;
		497	w->rstatus = status;
		498	event (EV_A_ (W)w, EV_CHILD);
		499	}
		500	}
		501
		502	static void
		503	childcb (EV_P_ struct ev_signal *sw, int revents)
		504	{
474	int pid, status;	505	int pid, status;
475		506
476	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	507	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
477	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	508	{
478	if (w->pid == pid \|\| !w->pid)	509	/* make sure we are called again until all childs have been reaped */
479	{	510	event (EV_A_ (W)sw, EV_SIGNAL);
480	w->status = status;	511
481	event ((W)w, EV_CHILD);	512	child_reap (EV_A_ sw, pid, pid, status);
482	}	513	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		514	}
483	}	515	}
		516
		517	#endif
484		518
485	/*****************************************************************************/	519	/*****************************************************************************/
486		520
		521	#if EV_USE_KQUEUE
		522	# include "ev_kqueue.c"
		523	#endif
487	#if EV_USE_EPOLL	524	#if EV_USE_EPOLL
488	# include "ev_epoll.c"	525	# include "ev_epoll.c"
489	#endif	526	#endif
490	#if EV_USE_POLL	527	#if EV_USEV_POLL
491	# include "ev_poll.c"	528	# include "ev_poll.c"
492	#endif	529	#endif
493	#if EV_USE_SELECT	530	#if EV_USE_SELECT
494	# include "ev_select.c"	531	# include "ev_select.c"
495	#endif	532	#endif
…		…
504	ev_version_minor (void)	541	ev_version_minor (void)
505	{	542	{
506	return EV_VERSION_MINOR;	543	return EV_VERSION_MINOR;
507	}	544	}
508		545
509	/* return true if we are running with elevated privileges and ignore env variables */	546	/* return true if we are running with elevated privileges and should ignore env variables */
510	static int	547	static int
511	enable_secure ()	548	enable_secure (void)
512	{	549	{
		550	#ifdef WIN32
		551	return 0;
		552	#else
513	return getuid () != geteuid ()	553	return getuid () != geteuid ()
514	\|\| getgid () != getegid ();	554	\|\| getgid () != getegid ();
		555	#endif
515	}	556	}
516		557
517	int ev_init (int methods)	558	int
		559	ev_method (EV_P)
518	{	560	{
		561	return method;
		562	}
		563
		564	static void
		565	loop_init (EV_P_ int methods)
		566	{
519	if (!ev_method)	567	if (!method)
520	{	568	{
521	#if EV_USE_MONOTONIC	569	#if EV_USE_MONOTONIC
522	{	570	{
523	struct timespec ts;	571	struct timespec ts;
524	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	572	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
525	have_monotonic = 1;	573	have_monotonic = 1;
526	}	574	}
527	#endif	575	#endif
528		576
529	ev_now = ev_time ();	577	rt_now = ev_time ();
530	now = get_clock ();	578	mn_now = get_clock ();
531	now_floor = now;	579	now_floor = mn_now;
532	diff = ev_now - now;	580	rtmn_diff = rt_now - mn_now;
533
534	if (pipe (sigpipe))
535	return 0;
536		581
537	if (methods == EVMETHOD_AUTO)	582	if (methods == EVMETHOD_AUTO)
538	if (!enable_secure () && getenv ("LIBEV_METHODS"))	583	if (!enable_secure () && getenv ("LIBEV_METHODS"))
539	methods = atoi (getenv ("LIBEV_METHODS"));	584	methods = atoi (getenv ("LIBEV_METHODS"));
540	else	585	else
541	methods = EVMETHOD_ANY;	586	methods = EVMETHOD_ANY;
542		587
543	ev_method = 0;	588	method = 0;
		589	#if EV_USE_KQUEUE
		590	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		591	#endif
544	#if EV_USE_EPOLL	592	#if EV_USE_EPOLL
545	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	593	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
546	#endif	594	#endif
547	#if EV_USE_POLL	595	#if EV_USEV_POLL
548	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	596	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
549	#endif	597	#endif
550	#if EV_USE_SELECT	598	#if EV_USE_SELECT
551	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	599	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
552	#endif	600	#endif
		601	}
		602	}
553		603
		604	void
		605	loop_destroy (EV_P)
		606	{
		607	#if EV_USE_KQUEUE
		608	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		609	#endif
		610	#if EV_USE_EPOLL
		611	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		612	#endif
		613	#if EV_USEV_POLL
		614	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		615	#endif
		616	#if EV_USE_SELECT
		617	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		618	#endif
		619
		620	method = 0;
		621	/TODO/
		622	}
		623
		624	void
		625	loop_fork (EV_P)
		626	{
		627	/TODO/
		628	#if EV_USE_EPOLL
		629	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		630	#endif
		631	#if EV_USE_KQUEUE
		632	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		633	#endif
		634	}
		635
		636	#if EV_MULTIPLICITY
		637	struct ev_loop *
		638	ev_loop_new (int methods)
		639	{
		640	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));
		641
		642	loop_init (EV_A_ methods);
		643
		644	if (ev_methods (EV_A))
		645	return loop;
		646
		647	return 0;
		648	}
		649
		650	void
		651	ev_loop_destroy (EV_P)
		652	{
		653	loop_destroy (EV_A);
		654	free (loop);
		655	}
		656
		657	void
		658	ev_loop_fork (EV_P)
		659	{
		660	loop_fork (EV_A);
		661	}
		662
		663	#endif
		664
		665	#if EV_MULTIPLICITY
		666	struct ev_loop default_loop_struct;
		667	static struct ev_loop *default_loop;
		668
		669	struct ev_loop *
		670	#else
		671	static int default_loop;
		672
		673	int
		674	#endif
		675	ev_default_loop (int methods)
		676	{
		677	if (sigpipe [0] == sigpipe [1])
		678	if (pipe (sigpipe))
		679	return 0;
		680
		681	if (!default_loop)
		682	{
		683	#if EV_MULTIPLICITY
		684	struct ev_loop *loop = default_loop = &default_loop_struct;
		685	#else
		686	default_loop = 1;
		687	#endif
		688
		689	loop_init (EV_A_ methods);
		690
554	if (ev_method)	691	if (ev_method (EV_A))
555	{	692	{
556	ev_watcher_init (&sigev, sigcb);	693	ev_watcher_init (&sigev, sigcb);
		694	ev_set_priority (&sigev, EV_MAXPRI);
557	siginit ();	695	siginit (EV_A);
558		696
		697	#ifndef WIN32
559	ev_signal_init (&childev, childcb, SIGCHLD);	698	ev_signal_init (&childev, childcb, SIGCHLD);
		699	ev_set_priority (&childev, EV_MAXPRI);
560	ev_signal_start (&childev);	700	ev_signal_start (EV_A_ &childev);
		701	ev_unref (EV_A); /* child watcher should not keep loop alive */
		702	#endif
561	}	703	}
		704	else
		705	default_loop = 0;
562	}	706	}
563		707
564	return ev_method;	708	return default_loop;
565	}	709	}
566		710
567	/*****************************************************************************/
568
569	void	711	void
570	ev_fork_prepare (void)	712	ev_default_destroy (void)
571	{	713	{
572	/* nop */	714	#if EV_MULTIPLICITY
573	}	715	struct ev_loop *loop = default_loop;
574
575	void
576	ev_fork_parent (void)
577	{
578	/* nop */
579	}
580
581	void
582	ev_fork_child (void)
583	{
584	#if EV_USE_EPOLL
585	if (ev_method == EVMETHOD_EPOLL)
586	epoll_postfork_child ();
587	#endif	716	#endif
588		717
		718	ev_ref (EV_A); /* child watcher */
		719	ev_signal_stop (EV_A_ &childev);
		720
		721	ev_ref (EV_A); /* signal watcher */
589	ev_io_stop (&sigev);	722	ev_io_stop (EV_A_ &sigev);
		723
		724	close (sigpipe [0]); sigpipe [0] = 0;
		725	close (sigpipe [1]); sigpipe [1] = 0;
		726
		727	loop_destroy (EV_A);
		728	}
		729
		730	void
		731	ev_default_fork (EV_P)
		732	{
		733	loop_fork (EV_A);
		734
		735	ev_io_stop (EV_A_ &sigev);
590	close (sigpipe [0]);	736	close (sigpipe [0]);
591	close (sigpipe [1]);	737	close (sigpipe [1]);
592	pipe (sigpipe);	738	pipe (sigpipe);
		739
		740	ev_ref (EV_A); /* signal watcher */
593	siginit ();	741	siginit (EV_A);
594	}	742	}
595		743
596	/*****************************************************************************/	744	/*****************************************************************************/
597		745
598	static void	746	static void
599	call_pending (void)	747	call_pending (EV_P)
600	{	748	{
601	int pri;	749	int pri;
602		750
603	for (pri = NUMPRI; pri--; )	751	for (pri = NUMPRI; pri--; )
604	while (pendingcnt [pri])	752	while (pendingcnt [pri])
…		…
606	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	754	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
607		755
608	if (p->w)	756	if (p->w)
609	{	757	{
610	p->w->pending = 0;	758	p->w->pending = 0;
611	p->w->cb (p->w, p->events);	759	p->w->cb (EV_A_ p->w, p->events);
612	}	760	}
613	}	761	}
614	}	762	}
615		763
616	static void	764	static void
617	timers_reify (void)	765	timers_reify (EV_P)
618	{	766	{
619	while (timercnt && timers [0]->at <= now)	767	while (timercnt && timers [0]->at <= mn_now)
620	{	768	{
621	struct ev_timer *w = timers [0];	769	struct ev_timer *w = timers [0];
622		770
623	/* first reschedule or stop timer */	771	/* first reschedule or stop timer */
624	if (w->repeat)	772	if (w->repeat)
625	{	773	{
626	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	774	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
627	w->at = now + w->repeat;	775	w->at = mn_now + w->repeat;
628	downheap ((WT *)timers, timercnt, 0);	776	downheap ((WT *)timers, timercnt, 0);
629	}	777	}
630	else	778	else
631	ev_timer_stop (w); /* nonrepeating: stop timer */	779	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
632		780
633	event ((W)w, EV_TIMEOUT);	781	event (EV_A_ (W)w, EV_TIMEOUT);
634	}	782	}
635	}	783	}
636		784
637	static void	785	static void
638	periodics_reify (void)	786	periodics_reify (EV_P)
639	{	787	{
640	while (periodiccnt && periodics [0]->at <= ev_now)	788	while (periodiccnt && periodics [0]->at <= rt_now)
641	{	789	{
642	struct ev_periodic *w = periodics [0];	790	struct ev_periodic *w = periodics [0];
643		791
644	/* first reschedule or stop timer */	792	/* first reschedule or stop timer */
645	if (w->interval)	793	if (w->interval)
646	{	794	{
647	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	795	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;
648	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	796	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
649	downheap ((WT *)periodics, periodiccnt, 0);	797	downheap ((WT *)periodics, periodiccnt, 0);
650	}	798	}
651	else	799	else
652	ev_periodic_stop (w); /* nonrepeating: stop timer */	800	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
653		801
654	event ((W)w, EV_PERIODIC);	802	event (EV_A_ (W)w, EV_PERIODIC);
655	}	803	}
656	}	804	}
657		805
658	static void	806	static void
659	periodics_reschedule (ev_tstamp diff)	807	periodics_reschedule (EV_P)
660	{	808	{
661	int i;	809	int i;
662		810
663	/* adjust periodics after time jump */	811	/* adjust periodics after time jump */
664	for (i = 0; i < periodiccnt; ++i)	812	for (i = 0; i < periodiccnt; ++i)
665	{	813	{
666	struct ev_periodic *w = periodics [i];	814	struct ev_periodic *w = periodics [i];
667		815
668	if (w->interval)	816	if (w->interval)
669	{	817	{
670	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	818	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
671		819
672	if (fabs (diff) >= 1e-4)	820	if (fabs (diff) >= 1e-4)
673	{	821	{
674	ev_periodic_stop (w);	822	ev_periodic_stop (EV_A_ w);
675	ev_periodic_start (w);	823	ev_periodic_start (EV_A_ w);
676		824
677	i = 0; /* restart loop, inefficient, but time jumps should be rare */	825	i = 0; /* restart loop, inefficient, but time jumps should be rare */
678	}	826	}
679	}	827	}
680	}	828	}
681	}	829	}
682		830
683	static int	831	inline int
684	time_update_monotonic (void)	832	time_update_monotonic (EV_P)
685	{	833	{
686	now = get_clock ();	834	mn_now = get_clock ();
687		835
688	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	836	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
689	{	837	{
690	ev_now = now + diff;	838	rt_now = rtmn_diff + mn_now;
691	return 0;	839	return 0;
692	}	840	}
693	else	841	else
694	{	842	{
695	now_floor = now;	843	now_floor = mn_now;
696	ev_now = ev_time ();	844	rt_now = ev_time ();
697	return 1;	845	return 1;
698	}	846	}
699	}	847	}
700		848
701	static void	849	static void
702	time_update (void)	850	time_update (EV_P)
703	{	851	{
704	int i;	852	int i;
705		853
706	#if EV_USE_MONOTONIC	854	#if EV_USE_MONOTONIC
707	if (expect_true (have_monotonic))	855	if (expect_true (have_monotonic))
708	{	856	{
709	if (time_update_monotonic ())	857	if (time_update_monotonic (EV_A))
710	{	858	{
711	ev_tstamp odiff = diff;	859	ev_tstamp odiff = rtmn_diff;
712		860
713	for (i = 4; --i; ) /* loop a few times, before making important decisions */	861	for (i = 4; --i; ) /* loop a few times, before making important decisions */
714	{	862	{
715	diff = ev_now - now;	863	rtmn_diff = rt_now - mn_now;
716		864
717	if (fabs (odiff - diff) < MIN_TIMEJUMP)	865	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
718	return; /* all is well */	866	return; /* all is well */
719		867
720	ev_now = ev_time ();	868	rt_now = ev_time ();
721	now = get_clock ();	869	mn_now = get_clock ();
722	now_floor = now;	870	now_floor = mn_now;
723	}	871	}
724		872
725	periodics_reschedule (diff - odiff);	873	periodics_reschedule (EV_A);
726	/* no timer adjustment, as the monotonic clock doesn't jump */	874	/* no timer adjustment, as the monotonic clock doesn't jump */
		875	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
727	}	876	}
728	}	877	}
729	else	878	else
730	#endif	879	#endif
731	{	880	{
732	ev_now = ev_time ();	881	rt_now = ev_time ();
733		882
734	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	883	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
735	{	884	{
736	periodics_reschedule (ev_now - now);	885	periodics_reschedule (EV_A);
737		886
738	/* adjust timers. this is easy, as the offset is the same for all */	887	/* adjust timers. this is easy, as the offset is the same for all */
739	for (i = 0; i < timercnt; ++i)	888	for (i = 0; i < timercnt; ++i)
740	timers [i]->at += diff;	889	timers [i]->at += rt_now - mn_now;
741	}	890	}
742		891
743	now = ev_now;	892	mn_now = rt_now;
744	}	893	}
745	}	894	}
746		895
747	int ev_loop_done;	896	void
		897	ev_ref (EV_P)
		898	{
		899	++activecnt;
		900	}
748		901
		902	void
		903	ev_unref (EV_P)
		904	{
		905	--activecnt;
		906	}
		907
		908	static int loop_done;
		909
		910	void
749	void ev_loop (int flags)	911	ev_loop (EV_P_ int flags)
750	{	912	{
751	double block;	913	double block;
752	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	914	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
753		915
754	do	916	do
755	{	917	{
756	/* queue check watchers (and execute them) */	918	/* queue check watchers (and execute them) */
757	if (expect_false (preparecnt))	919	if (expect_false (preparecnt))
758	{	920	{
759	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	921	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
760	call_pending ();	922	call_pending (EV_A);
761	}	923	}
762		924
763	/* update fd-related kernel structures */	925	/* update fd-related kernel structures */
764	fd_reify ();	926	fd_reify (EV_A);
765		927
766	/* calculate blocking time */	928	/* calculate blocking time */
767		929
768	/* we only need this for !monotonic clockor timers, but as we basically	930	/* we only need this for !monotonic clockor timers, but as we basically
769	always have timers, we just calculate it always */	931	always have timers, we just calculate it always */
770	#if EV_USE_MONOTONIC	932	#if EV_USE_MONOTONIC
771	if (expect_true (have_monotonic))	933	if (expect_true (have_monotonic))
772	time_update_monotonic ();	934	time_update_monotonic (EV_A);
773	else	935	else
774	#endif	936	#endif
775	{	937	{
776	ev_now = ev_time ();	938	rt_now = ev_time ();
777	now = ev_now;	939	mn_now = rt_now;
778	}	940	}
779		941
780	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	942	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
781	block = 0.;	943	block = 0.;
782	else	944	else
783	{	945	{
784	block = MAX_BLOCKTIME;	946	block = MAX_BLOCKTIME;
785		947
786	if (timercnt)	948	if (timercnt)
787	{	949	{
788	ev_tstamp to = timers [0]->at - now + method_fudge;	950	ev_tstamp to = timers [0]->at - mn_now + method_fudge;
789	if (block > to) block = to;	951	if (block > to) block = to;
790	}	952	}
791		953
792	if (periodiccnt)	954	if (periodiccnt)
793	{	955	{
794	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	956	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
795	if (block > to) block = to;	957	if (block > to) block = to;
796	}	958	}
797		959
798	if (block < 0.) block = 0.;	960	if (block < 0.) block = 0.;
799	}	961	}
800		962
801	method_poll (block);	963	method_poll (EV_A_ block);
802		964
803	/* update ev_now, do magic */	965	/* update rt_now, do magic */
804	time_update ();	966	time_update (EV_A);
805		967
806	/* queue pending timers and reschedule them */	968	/* queue pending timers and reschedule them */
807	timers_reify (); /* relative timers called last */	969	timers_reify (EV_A); /* relative timers called last */
808	periodics_reify (); /* absolute timers called first */	970	periodics_reify (EV_A); /* absolute timers called first */
809		971
810	/* queue idle watchers unless io or timers are pending */	972	/* queue idle watchers unless io or timers are pending */
811	if (!pendingcnt)	973	if (!pendingcnt)
812	queue_events ((W *)idles, idlecnt, EV_IDLE);	974	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
813		975
814	/* queue check watchers, to be executed first */	976	/* queue check watchers, to be executed first */
815	if (checkcnt)	977	if (checkcnt)
816	queue_events ((W *)checks, checkcnt, EV_CHECK);	978	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
817		979
818	call_pending ();	980	call_pending (EV_A);
819	}	981	}
820	while (!ev_loop_done);	982	while (activecnt && !loop_done);
821		983
822	if (ev_loop_done != 2)	984	if (loop_done != 2)
823	ev_loop_done = 0;	985	loop_done = 0;
		986	}
		987
		988	void
		989	ev_unloop (EV_P_ int how)
		990	{
		991	loop_done = how;
824	}	992	}
825		993
826	/*****************************************************************************/	994	/*****************************************************************************/
827		995
828	static void	996	inline void
829	wlist_add (WL *head, WL elem)	997	wlist_add (WL *head, WL elem)
830	{	998	{
831	elem->next = *head;	999	elem->next = *head;
832	*head = elem;	1000	*head = elem;
833	}	1001	}
834		1002
835	static void	1003	inline void
836	wlist_del (WL *head, WL elem)	1004	wlist_del (WL *head, WL elem)
837	{	1005	{
838	while (*head)	1006	while (*head)
839	{	1007	{
840	if (*head == elem)	1008	if (*head == elem)
…		…
845		1013
846	head = &(*head)->next;	1014	head = &(*head)->next;
847	}	1015	}
848	}	1016	}
849		1017
850	static void	1018	inline void
851	ev_clear_pending (W w)	1019	ev_clear_pending (EV_P_ W w)
852	{	1020	{
853	if (w->pending)	1021	if (w->pending)
854	{	1022	{
855	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1023	pendings [ABSPRI (w)][w->pending - 1].w = 0;
856	w->pending = 0;	1024	w->pending = 0;
857	}	1025	}
858	}	1026	}
859		1027
860	static void	1028	inline void
861	ev_start (W w, int active)	1029	ev_start (EV_P_ W w, int active)
862	{	1030	{
		1031	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1032	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1033
863	w->active = active;	1034	w->active = active;
		1035	ev_ref (EV_A);
864	}	1036	}
865		1037
866	static void	1038	inline void
867	ev_stop (W w)	1039	ev_stop (EV_P_ W w)
868	{	1040	{
		1041	ev_unref (EV_A);
869	w->active = 0;	1042	w->active = 0;
870	}	1043	}
871		1044
872	/*****************************************************************************/	1045	/*****************************************************************************/
873		1046
874	void	1047	void
875	ev_io_start (struct ev_io *w)	1048	ev_io_start (EV_P_ struct ev_io *w)
876	{	1049	{
877	int fd = w->fd;	1050	int fd = w->fd;
878		1051
879	if (ev_is_active (w))	1052	if (ev_is_active (w))
880	return;	1053	return;
881		1054
882	assert (("ev_io_start called with negative fd", fd >= 0));	1055	assert (("ev_io_start called with negative fd", fd >= 0));
883		1056
884	ev_start ((W)w, 1);	1057	ev_start (EV_A_ (W)w, 1);
885	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1058	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
886	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1059	wlist_add ((WL *)&anfds[fd].head, (WL)w);
887		1060
888	fd_change (fd);	1061	fd_change (EV_A_ fd);
889	}	1062	}
890		1063
891	void	1064	void
892	ev_io_stop (struct ev_io *w)	1065	ev_io_stop (EV_P_ struct ev_io *w)
893	{	1066	{
894	ev_clear_pending ((W)w);	1067	ev_clear_pending (EV_A_ (W)w);
895	if (!ev_is_active (w))	1068	if (!ev_is_active (w))
896	return;	1069	return;
897		1070
898	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1071	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
899	ev_stop ((W)w);	1072	ev_stop (EV_A_ (W)w);
900		1073
901	fd_change (w->fd);	1074	fd_change (EV_A_ w->fd);
902	}	1075	}
903		1076
904	void	1077	void
905	ev_timer_start (struct ev_timer *w)	1078	ev_timer_start (EV_P_ struct ev_timer *w)
906	{	1079	{
907	if (ev_is_active (w))	1080	if (ev_is_active (w))
908	return;	1081	return;
909		1082
910	w->at += now;	1083	w->at += mn_now;
911		1084
912	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1085	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
913		1086
914	ev_start ((W)w, ++timercnt);	1087	ev_start (EV_A_ (W)w, ++timercnt);
915	array_needsize (timers, timermax, timercnt, );	1088	array_needsize (timers, timermax, timercnt, );
916	timers [timercnt - 1] = w;	1089	timers [timercnt - 1] = w;
917	upheap ((WT *)timers, timercnt - 1);	1090	upheap ((WT *)timers, timercnt - 1);
918	}	1091	}
919		1092
920	void	1093	void
921	ev_timer_stop (struct ev_timer *w)	1094	ev_timer_stop (EV_P_ struct ev_timer *w)
922	{	1095	{
923	ev_clear_pending ((W)w);	1096	ev_clear_pending (EV_A_ (W)w);
924	if (!ev_is_active (w))	1097	if (!ev_is_active (w))
925	return;	1098	return;
926		1099
927	if (w->active < timercnt--)	1100	if (w->active < timercnt--)
928	{	1101	{
…		…
930	downheap ((WT *)timers, timercnt, w->active - 1);	1103	downheap ((WT *)timers, timercnt, w->active - 1);
931	}	1104	}
932		1105
933	w->at = w->repeat;	1106	w->at = w->repeat;
934		1107
935	ev_stop ((W)w);	1108	ev_stop (EV_A_ (W)w);
936	}	1109	}
937		1110
938	void	1111	void
939	ev_timer_again (struct ev_timer *w)	1112	ev_timer_again (EV_P_ struct ev_timer *w)
940	{	1113	{
941	if (ev_is_active (w))	1114	if (ev_is_active (w))
942	{	1115	{
943	if (w->repeat)	1116	if (w->repeat)
944	{	1117	{
945	w->at = now + w->repeat;	1118	w->at = mn_now + w->repeat;
946	downheap ((WT *)timers, timercnt, w->active - 1);	1119	downheap ((WT *)timers, timercnt, w->active - 1);
947	}	1120	}
948	else	1121	else
949	ev_timer_stop (w);	1122	ev_timer_stop (EV_A_ w);
950	}	1123	}
951	else if (w->repeat)	1124	else if (w->repeat)
952	ev_timer_start (w);	1125	ev_timer_start (EV_A_ w);
953	}	1126	}
954		1127
955	void	1128	void
956	ev_periodic_start (struct ev_periodic *w)	1129	ev_periodic_start (EV_P_ struct ev_periodic *w)
957	{	1130	{
958	if (ev_is_active (w))	1131	if (ev_is_active (w))
959	return;	1132	return;
960		1133
961	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1134	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
962		1135
963	/* this formula differs from the one in periodic_reify because we do not always round up */	1136	/* this formula differs from the one in periodic_reify because we do not always round up */
964	if (w->interval)	1137	if (w->interval)
965	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1138	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
966		1139
967	ev_start ((W)w, ++periodiccnt);	1140	ev_start (EV_A_ (W)w, ++periodiccnt);
968	array_needsize (periodics, periodicmax, periodiccnt, );	1141	array_needsize (periodics, periodicmax, periodiccnt, );
969	periodics [periodiccnt - 1] = w;	1142	periodics [periodiccnt - 1] = w;
970	upheap ((WT *)periodics, periodiccnt - 1);	1143	upheap ((WT *)periodics, periodiccnt - 1);
971	}	1144	}
972		1145
973	void	1146	void
974	ev_periodic_stop (struct ev_periodic *w)	1147	ev_periodic_stop (EV_P_ struct ev_periodic *w)
975	{	1148	{
976	ev_clear_pending ((W)w);	1149	ev_clear_pending (EV_A_ (W)w);
977	if (!ev_is_active (w))	1150	if (!ev_is_active (w))
978	return;	1151	return;
979		1152
980	if (w->active < periodiccnt--)	1153	if (w->active < periodiccnt--)
981	{	1154	{
982	periodics [w->active - 1] = periodics [periodiccnt];	1155	periodics [w->active - 1] = periodics [periodiccnt];
983	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1156	downheap ((WT *)periodics, periodiccnt, w->active - 1);
984	}	1157	}
985		1158
986	ev_stop ((W)w);	1159	ev_stop (EV_A_ (W)w);
987	}	1160	}
988		1161
989	void	1162	void
990	ev_signal_start (struct ev_signal *w)	1163	ev_idle_start (EV_P_ struct ev_idle *w)
991	{	1164	{
992	if (ev_is_active (w))	1165	if (ev_is_active (w))
993	return;	1166	return;
994		1167
		1168	ev_start (EV_A_ (W)w, ++idlecnt);
		1169	array_needsize (idles, idlemax, idlecnt, );
		1170	idles [idlecnt - 1] = w;
		1171	}
		1172
		1173	void
		1174	ev_idle_stop (EV_P_ struct ev_idle *w)
		1175	{
		1176	ev_clear_pending (EV_A_ (W)w);
		1177	if (ev_is_active (w))
		1178	return;
		1179
		1180	idles [w->active - 1] = idles [--idlecnt];
		1181	ev_stop (EV_A_ (W)w);
		1182	}
		1183
		1184	void
		1185	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1186	{
		1187	if (ev_is_active (w))
		1188	return;
		1189
		1190	ev_start (EV_A_ (W)w, ++preparecnt);
		1191	array_needsize (prepares, preparemax, preparecnt, );
		1192	prepares [preparecnt - 1] = w;
		1193	}
		1194
		1195	void
		1196	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1197	{
		1198	ev_clear_pending (EV_A_ (W)w);
		1199	if (ev_is_active (w))
		1200	return;
		1201
		1202	prepares [w->active - 1] = prepares [--preparecnt];
		1203	ev_stop (EV_A_ (W)w);
		1204	}
		1205
		1206	void
		1207	ev_check_start (EV_P_ struct ev_check *w)
		1208	{
		1209	if (ev_is_active (w))
		1210	return;
		1211
		1212	ev_start (EV_A_ (W)w, ++checkcnt);
		1213	array_needsize (checks, checkmax, checkcnt, );
		1214	checks [checkcnt - 1] = w;
		1215	}
		1216
		1217	void
		1218	ev_check_stop (EV_P_ struct ev_check *w)
		1219	{
		1220	ev_clear_pending (EV_A_ (W)w);
		1221	if (ev_is_active (w))
		1222	return;
		1223
		1224	checks [w->active - 1] = checks [--checkcnt];
		1225	ev_stop (EV_A_ (W)w);
		1226	}
		1227
		1228	#ifndef SA_RESTART
		1229	# define SA_RESTART 0
		1230	#endif
		1231
		1232	void
		1233	ev_signal_start (EV_P_ struct ev_signal *w)
		1234	{
		1235	#if EV_MULTIPLICITY
		1236	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1237	#endif
		1238	if (ev_is_active (w))
		1239	return;
		1240
995	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1241	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
996		1242
997	ev_start ((W)w, 1);	1243	ev_start (EV_A_ (W)w, 1);
998	array_needsize (signals, signalmax, w->signum, signals_init);	1244	array_needsize (signals, signalmax, w->signum, signals_init);
999	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1245	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1000		1246
1001	if (!w->next)	1247	if (!w->next)
1002	{	1248	{
1003	struct sigaction sa;	1249	struct sigaction sa;
1004	sa.sa_handler = sighandler;	1250	sa.sa_handler = sighandler;
1005	sigfillset (&sa.sa_mask);	1251	sigfillset (&sa.sa_mask);
1006	sa.sa_flags = 0;	1252	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1007	sigaction (w->signum, &sa, 0);	1253	sigaction (w->signum, &sa, 0);
1008	}	1254	}
1009	}	1255	}
1010		1256
1011	void	1257	void
1012	ev_signal_stop (struct ev_signal *w)	1258	ev_signal_stop (EV_P_ struct ev_signal *w)
1013	{	1259	{
1014	ev_clear_pending ((W)w);	1260	ev_clear_pending (EV_A_ (W)w);
1015	if (!ev_is_active (w))	1261	if (!ev_is_active (w))
1016	return;	1262	return;
1017		1263
1018	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1264	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1019	ev_stop ((W)w);	1265	ev_stop (EV_A_ (W)w);
1020		1266
1021	if (!signals [w->signum - 1].head)	1267	if (!signals [w->signum - 1].head)
1022	signal (w->signum, SIG_DFL);	1268	signal (w->signum, SIG_DFL);
1023	}	1269	}
1024		1270
1025	void	1271	void
1026	ev_idle_start (struct ev_idle *w)	1272	ev_child_start (EV_P_ struct ev_child *w)
1027	{	1273	{
		1274	#if EV_MULTIPLICITY
		1275	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1276	#endif
1028	if (ev_is_active (w))	1277	if (ev_is_active (w))
1029	return;	1278	return;
1030		1279
1031	ev_start ((W)w, ++idlecnt);	1280	ev_start (EV_A_ (W)w, 1);
1032	array_needsize (idles, idlemax, idlecnt, );	1281	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1033	idles [idlecnt - 1] = w;
1034	}	1282	}
1035		1283
1036	void	1284	void
1037	ev_idle_stop (struct ev_idle *w)	1285	ev_child_stop (EV_P_ struct ev_child *w)
1038	{	1286	{
1039	ev_clear_pending ((W)w);	1287	ev_clear_pending (EV_A_ (W)w);
1040	if (ev_is_active (w))	1288	if (ev_is_active (w))
1041	return;	1289	return;
1042		1290
1043	idles [w->active - 1] = idles [--idlecnt];
1044	ev_stop ((W)w);
1045	}
1046
1047	void
1048	ev_prepare_start (struct ev_prepare *w)
1049	{
1050	if (ev_is_active (w))
1051	return;
1052
1053	ev_start ((W)w, ++preparecnt);
1054	array_needsize (prepares, preparemax, preparecnt, );
1055	prepares [preparecnt - 1] = w;
1056	}
1057
1058	void
1059	ev_prepare_stop (struct ev_prepare *w)
1060	{
1061	ev_clear_pending ((W)w);
1062	if (ev_is_active (w))
1063	return;
1064
1065	prepares [w->active - 1] = prepares [--preparecnt];
1066	ev_stop ((W)w);
1067	}
1068
1069	void
1070	ev_check_start (struct ev_check *w)
1071	{
1072	if (ev_is_active (w))
1073	return;
1074
1075	ev_start ((W)w, ++checkcnt);
1076	array_needsize (checks, checkmax, checkcnt, );
1077	checks [checkcnt - 1] = w;
1078	}
1079
1080	void
1081	ev_check_stop (struct ev_check *w)
1082	{
1083	ev_clear_pending ((W)w);
1084	if (ev_is_active (w))
1085	return;
1086
1087	checks [w->active - 1] = checks [--checkcnt];
1088	ev_stop ((W)w);
1089	}
1090
1091	void
1092	ev_child_start (struct ev_child *w)
1093	{
1094	if (ev_is_active (w))
1095	return;
1096
1097	ev_start ((W)w, 1);
1098	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1099	}
1100
1101	void
1102	ev_child_stop (struct ev_child *w)
1103	{
1104	ev_clear_pending ((W)w);
1105	if (ev_is_active (w))
1106	return;
1107
1108	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1291	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1109	ev_stop ((W)w);	1292	ev_stop (EV_A_ (W)w);
1110	}	1293	}
1111		1294
1112	/*****************************************************************************/	1295	/*****************************************************************************/
1113		1296
1114	struct ev_once	1297	struct ev_once
…		…
1118	void (cb)(int revents, void arg);	1301	void (cb)(int revents, void arg);
1119	void *arg;	1302	void *arg;
1120	};	1303	};
1121		1304
1122	static void	1305	static void
1123	once_cb (struct ev_once *once, int revents)	1306	once_cb (EV_P_ struct ev_once *once, int revents)
1124	{	1307	{
1125	void (cb)(int revents, void arg) = once->cb;	1308	void (cb)(int revents, void arg) = once->cb;
1126	void *arg = once->arg;	1309	void *arg = once->arg;
1127		1310
1128	ev_io_stop (&once->io);	1311	ev_io_stop (EV_A_ &once->io);
1129	ev_timer_stop (&once->to);	1312	ev_timer_stop (EV_A_ &once->to);
1130	free (once);	1313	free (once);
1131		1314
1132	cb (revents, arg);	1315	cb (revents, arg);
1133	}	1316	}
1134		1317
1135	static void	1318	static void
1136	once_cb_io (struct ev_io *w, int revents)	1319	once_cb_io (EV_P_ struct ev_io *w, int revents)
1137	{	1320	{
1138	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1321	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1139	}	1322	}
1140		1323
1141	static void	1324	static void
1142	once_cb_to (struct ev_timer *w, int revents)	1325	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1143	{	1326	{
1144	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1327	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1145	}	1328	}
1146		1329
1147	void	1330	void
1148	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1331	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1149	{	1332	{
1150	struct ev_once *once = malloc (sizeof (struct ev_once));	1333	struct ev_once *once = malloc (sizeof (struct ev_once));
1151		1334
1152	if (!once)	1335	if (!once)
1153	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1336	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
…		…
1158		1341
1159	ev_watcher_init (&once->io, once_cb_io);	1342	ev_watcher_init (&once->io, once_cb_io);
1160	if (fd >= 0)	1343	if (fd >= 0)
1161	{	1344	{
1162	ev_io_set (&once->io, fd, events);	1345	ev_io_set (&once->io, fd, events);
1163	ev_io_start (&once->io);	1346	ev_io_start (EV_A_ &once->io);
1164	}	1347	}
1165		1348
1166	ev_watcher_init (&once->to, once_cb_to);	1349	ev_watcher_init (&once->to, once_cb_to);
1167	if (timeout >= 0.)	1350	if (timeout >= 0.)
1168	{	1351	{
1169	ev_timer_set (&once->to, timeout, 0.);	1352	ev_timer_set (&once->to, timeout, 0.);
1170	ev_timer_start (&once->to);	1353	ev_timer_start (EV_A_ &once->to);
1171	}	1354	}
1172	}	1355	}
1173	}	1356	}
1174		1357
1175	/*****************************************************************************/
1176
1177	#if 0
1178
1179	struct ev_io wio;
1180
1181	static void
1182	sin_cb (struct ev_io *w, int revents)
1183	{
1184	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1185	}
1186
1187	static void
1188	ocb (struct ev_timer *w, int revents)
1189	{
1190	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1191	ev_timer_stop (w);
1192	ev_timer_start (w);
1193	}
1194
1195	static void
1196	scb (struct ev_signal *w, int revents)
1197	{
1198	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1199	ev_io_stop (&wio);
1200	ev_io_start (&wio);
1201	}
1202
1203	static void
1204	gcb (struct ev_signal *w, int revents)
1205	{
1206	fprintf (stderr, "generic %x\n", revents);
1207
1208	}
1209
1210	int main (void)
1211	{
1212	ev_init (0);
1213
1214	ev_io_init (&wio, sin_cb, 0, EV_READ);
1215	ev_io_start (&wio);
1216
1217	struct ev_timer t[10000];
1218
1219	#if 0
1220	int i;
1221	for (i = 0; i < 10000; ++i)
1222	{
1223	struct ev_timer *w = t + i;
1224	ev_watcher_init (w, ocb, i);
1225	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1226	ev_timer_start (w);
1227	if (drand48 () < 0.5)
1228	ev_timer_stop (w);
1229	}
1230	#endif
1231
1232	struct ev_timer t1;
1233	ev_timer_init (&t1, ocb, 5, 10);
1234	ev_timer_start (&t1);
1235
1236	struct ev_signal sig;
1237	ev_signal_init (&sig, scb, SIGQUIT);
1238	ev_signal_start (&sig);
1239
1240	struct ev_check cw;
1241	ev_check_init (&cw, gcb);
1242	ev_check_start (&cw);
1243
1244	struct ev_idle iw;
1245	ev_idle_init (&iw, gcb);
1246	ev_idle_start (&iw);
1247
1248	ev_loop (0);
1249
1250	return 0;
1251	}
1252
1253	#endif
1254
1255
1256
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Comparing libev/ev.c (file contents): Revision 1.42 by root, Fri Nov 2 20:05:05 2007 UTC vs. Revision 1.58 by root, Sun Nov 4 16:52:52 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.42 by root, Fri Nov 2 20:05:05 2007 UTC vs.
Revision 1.58 by root, Sun Nov 4 16:52:52 2007 UTC