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

Comparing libev/ev.c (file contents):
Revision 1.44 by root, Fri Nov 2 20:59:14 2007 UTC vs.
Revision 1.67 by root, Mon Nov 5 16:42:15 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_STANDALONE
32	# include "config.h"	32	# include "config.h"
		33
		34	# if HAVE_CLOCK_GETTIME
		35	# define EV_USE_MONOTONIC 1
		36	# define EV_USE_REALTIME 1
		37	# endif
		38
		39	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		40	# define EV_USE_SELECT 1
		41	# endif
		42
		43	# if HAVE_POLL && HAVE_POLL_H
		44	# define EV_USE_POLL 1
		45	# endif
		46
		47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		48	# define EV_USE_EPOLL 1
		49	# endif
		50
		51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		52	# define EV_USE_KQUEUE 1
		53	# endif
		54
33	#endif	55	#endif
34		56
35	#include <math.h>	57	#include <math.h>
36	#include <stdlib.h>	58	#include <stdlib.h>
37	#include <unistd.h>	59	#include <unistd.h>
…		…
42	#include <stdio.h>	64	#include <stdio.h>
43		65
44	#include <assert.h>	66	#include <assert.h>
45	#include <errno.h>	67	#include <errno.h>
46	#include <sys/types.h>	68	#include <sys/types.h>
		69	#ifndef WIN32
47	#include <sys/wait.h>	70	# include <sys/wait.h>
		71	#endif
48	#include <sys/time.h>	72	#include <sys/time.h>
49	#include <time.h>	73	#include <time.h>
50		74
51	/**/	75	/**/
52		76
…		…
66	# define EV_USE_EPOLL 0	90	# define EV_USE_EPOLL 0
67	#endif	91	#endif
68		92
69	#ifndef EV_USE_KQUEUE	93	#ifndef EV_USE_KQUEUE
70	# define EV_USE_KQUEUE 0	94	# define EV_USE_KQUEUE 0
		95	#endif
		96
		97	#ifndef EV_USE_WIN32
		98	# ifdef WIN32
		99	# define EV_USE_WIN32 1
		100	# else
		101	# define EV_USE_WIN32 0
		102	# endif
71	#endif	103	#endif
72		104
73	#ifndef EV_USE_REALTIME	105	#ifndef EV_USE_REALTIME
74	# define EV_USE_REALTIME 1	106	# define EV_USE_REALTIME 1
75	#endif	107	#endif
…		…
111		143
112	typedef struct ev_watcher *W;	144	typedef struct ev_watcher *W;
113	typedef struct ev_watcher_list *WL;	145	typedef struct ev_watcher_list *WL;
114	typedef struct ev_watcher_time *WT;	146	typedef struct ev_watcher_time *WT;
115		147
116	static ev_tstamp now_floor, now, diff; /* monotonic clock */	148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
117	ev_tstamp ev_now;
118	int ev_method;
119		149
120	static int have_monotonic; /* runtime */	150	#if WIN32
121		151	/* note: the comment below could not be substantiated, but what would I care */
122	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	152	/* MSDN says this is required to handle SIGFPE */
123	static void (*method_modify)(int fd, int oev, int nev);	153	volatile double SIGFPE_REQ = 0.0f;
124	static void (*method_poll)(ev_tstamp timeout);	154	#endif
125		155
126	/*****************************************************************************/	156	/*****************************************************************************/
127		157
128	ev_tstamp	158	typedef struct
		159	{
		160	struct ev_watcher_list *head;
		161	unsigned char events;
		162	unsigned char reify;
		163	} ANFD;
		164
		165	typedef struct
		166	{
		167	W w;
		168	int events;
		169	} ANPENDING;
		170
		171	#if EV_MULTIPLICITY
		172
		173	struct ev_loop
		174	{
		175	# define VAR(name,decl) decl;
		176	# include "ev_vars.h"
		177	};
		178	# undef VAR
		179	# include "ev_wrap.h"
		180
		181	#else
		182
		183	# define VAR(name,decl) static decl;
		184	# include "ev_vars.h"
		185	# undef VAR
		186
		187	#endif
		188
		189	/*****************************************************************************/
		190
		191	inline ev_tstamp
129	ev_time (void)	192	ev_time (void)
130	{	193	{
131	#if EV_USE_REALTIME	194	#if EV_USE_REALTIME
132	struct timespec ts;	195	struct timespec ts;
133	clock_gettime (CLOCK_REALTIME, &ts);	196	clock_gettime (CLOCK_REALTIME, &ts);
…		…
137	gettimeofday (&tv, 0);	200	gettimeofday (&tv, 0);
138	return tv.tv_sec + tv.tv_usec * 1e-6;	201	return tv.tv_sec + tv.tv_usec * 1e-6;
139	#endif	202	#endif
140	}	203	}
141		204
142	static ev_tstamp	205	inline ev_tstamp
143	get_clock (void)	206	get_clock (void)
144	{	207	{
145	#if EV_USE_MONOTONIC	208	#if EV_USE_MONOTONIC
146	if (expect_true (have_monotonic))	209	if (expect_true (have_monotonic))
147	{	210	{
…		…
150	return ts.tv_sec + ts.tv_nsec * 1e-9;	213	return ts.tv_sec + ts.tv_nsec * 1e-9;
151	}	214	}
152	#endif	215	#endif
153		216
154	return ev_time ();	217	return ev_time ();
		218	}
		219
		220	ev_tstamp
		221	ev_now (EV_P)
		222	{
		223	return rt_now;
155	}	224	}
156		225
157	#define array_roundsize(base,n) ((n) \| 4 & ~3)	226	#define array_roundsize(base,n) ((n) \| 4 & ~3)
158		227
159	#define array_needsize(base,cur,cnt,init) \	228	#define array_needsize(base,cur,cnt,init) \
…		…
169	base = realloc (base, sizeof (base) (newcnt)); \	238	base = realloc (base, sizeof (base) (newcnt)); \
170	init (base + cur, newcnt - cur); \	239	init (base + cur, newcnt - cur); \
171	cur = newcnt; \	240	cur = newcnt; \
172	}	241	}
173		242
		243	#define array_slim(stem) \
		244	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		245	{ \
		246	stem ## max = array_roundsize (stem ## cnt >> 1); \
		247	base = realloc (base, sizeof (base) (stem ## max)); \
		248	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		249	}
		250
		251	#define array_free(stem, idx) \
		252	free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
		253
174	/*****************************************************************************/	254	/*****************************************************************************/
175
176	typedef struct
177	{
178	struct ev_io *head;
179	unsigned char events;
180	unsigned char reify;
181	} ANFD;
182
183	static ANFD *anfds;
184	static int anfdmax;
185		255
186	static void	256	static void
187	anfds_init (ANFD *base, int count)	257	anfds_init (ANFD *base, int count)
188	{	258	{
189	while (count--)	259	while (count--)
…		…
194		264
195	++base;	265	++base;
196	}	266	}
197	}	267	}
198		268
199	typedef struct
200	{
201	W w;
202	int events;
203	} ANPENDING;
204
205	static ANPENDING *pendings [NUMPRI];
206	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
207
208	static void	269	static void
209	event (W w, int events)	270	event (EV_P_ W w, int events)
210	{	271	{
211	if (w->pending)	272	if (w->pending)
212	{	273	{
213	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	274	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
214	return;	275	return;
…		…
219	pendings [ABSPRI (w)][w->pending - 1].w = w;	280	pendings [ABSPRI (w)][w->pending - 1].w = w;
220	pendings [ABSPRI (w)][w->pending - 1].events = events;	281	pendings [ABSPRI (w)][w->pending - 1].events = events;
221	}	282	}
222		283
223	static void	284	static void
224	queue_events (W *events, int eventcnt, int type)	285	queue_events (EV_P_ W *events, int eventcnt, int type)
225	{	286	{
226	int i;	287	int i;
227		288
228	for (i = 0; i < eventcnt; ++i)	289	for (i = 0; i < eventcnt; ++i)
229	event (events [i], type);	290	event (EV_A_ events [i], type);
230	}	291	}
231		292
232	static void	293	static void
233	fd_event (int fd, int events)	294	fd_event (EV_P_ int fd, int events)
234	{	295	{
235	ANFD *anfd = anfds + fd;	296	ANFD *anfd = anfds + fd;
236	struct ev_io *w;	297	struct ev_io *w;
237		298
238	for (w = anfd->head; w; w = w->next)	299	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
239	{	300	{
240	int ev = w->events & events;	301	int ev = w->events & events;
241		302
242	if (ev)	303	if (ev)
243	event ((W)w, ev);	304	event (EV_A_ (W)w, ev);
244	}	305	}
245	}	306	}
246		307
247	/*****************************************************************************/	308	/*****************************************************************************/
248		309
249	static int *fdchanges;
250	static int fdchangemax, fdchangecnt;
251
252	static void	310	static void
253	fd_reify (void)	311	fd_reify (EV_P)
254	{	312	{
255	int i;	313	int i;
256		314
257	for (i = 0; i < fdchangecnt; ++i)	315	for (i = 0; i < fdchangecnt; ++i)
258	{	316	{
…		…
260	ANFD *anfd = anfds + fd;	318	ANFD *anfd = anfds + fd;
261	struct ev_io *w;	319	struct ev_io *w;
262		320
263	int events = 0;	321	int events = 0;
264		322
265	for (w = anfd->head; w; w = w->next)	323	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
266	events \|= w->events;	324	events \|= w->events;
267		325
268	anfd->reify = 0;	326	anfd->reify = 0;
269		327
270	if (anfd->events != events)
271	{
272	method_modify (fd, anfd->events, events);	328	method_modify (EV_A_ fd, anfd->events, events);
273	anfd->events = events;	329	anfd->events = events;
274	}
275	}	330	}
276		331
277	fdchangecnt = 0;	332	fdchangecnt = 0;
278	}	333	}
279		334
280	static void	335	static void
281	fd_change (int fd)	336	fd_change (EV_P_ int fd)
282	{	337	{
283	if (anfds [fd].reify \|\| fdchangecnt < 0)	338	if (anfds [fd].reify \|\| fdchangecnt < 0)
284	return;	339	return;
285		340
286	anfds [fd].reify = 1;	341	anfds [fd].reify = 1;
…		…
289	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	344	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
290	fdchanges [fdchangecnt - 1] = fd;	345	fdchanges [fdchangecnt - 1] = fd;
291	}	346	}
292		347
293	static void	348	static void
294	fd_kill (int fd)	349	fd_kill (EV_P_ int fd)
295	{	350	{
296	struct ev_io *w;	351	struct ev_io *w;
297		352
298	printf ("killing fd %d\n", fd);//D
299	while ((w = anfds [fd].head))	353	while ((w = (struct ev_io *)anfds [fd].head))
300	{	354	{
301	ev_io_stop (w);	355	ev_io_stop (EV_A_ w);
302	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	356	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
303	}	357	}
304	}	358	}
305		359
306	/* called on EBADF to verify fds */	360	/* called on EBADF to verify fds */
307	static void	361	static void
308	fd_ebadf (void)	362	fd_ebadf (EV_P)
309	{	363	{
310	int fd;	364	int fd;
311		365
312	for (fd = 0; fd < anfdmax; ++fd)	366	for (fd = 0; fd < anfdmax; ++fd)
313	if (anfds [fd].events)	367	if (anfds [fd].events)
314	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	368	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
315	fd_kill (fd);	369	fd_kill (EV_A_ fd);
316	}	370	}
317		371
318	/* called on ENOMEM in select/poll to kill some fds and retry */	372	/* called on ENOMEM in select/poll to kill some fds and retry */
319	static void	373	static void
320	fd_enomem (void)	374	fd_enomem (EV_P)
321	{	375	{
322	int fd = anfdmax;	376	int fd;
323		377
324	while (fd--)	378	for (fd = anfdmax; fd--; )
325	if (anfds [fd].events)	379	if (anfds [fd].events)
326	{	380	{
327	close (fd);	381	close (fd);
328	fd_kill (fd);	382	fd_kill (EV_A_ fd);
329	return;	383	return;
330	}	384	}
331	}	385	}
332		386
		387	/* susually called after fork if method needs to re-arm all fds from scratch */
		388	static void
		389	fd_rearm_all (EV_P)
		390	{
		391	int fd;
		392
		393	/* this should be highly optimised to not do anything but set a flag */
		394	for (fd = 0; fd < anfdmax; ++fd)
		395	if (anfds [fd].events)
		396	{
		397	anfds [fd].events = 0;
		398	fd_change (EV_A_ fd);
		399	}
		400	}
		401
333	/*****************************************************************************/	402	/*****************************************************************************/
334		403
335	static struct ev_timer **timers;
336	static int timermax, timercnt;
337
338	static struct ev_periodic **periodics;
339	static int periodicmax, periodiccnt;
340
341	static void	404	static void
342	upheap (WT *timers, int k)	405	upheap (WT *heap, int k)
343	{	406	{
344	WT w = timers [k];	407	WT w = heap [k];
345		408
346	while (k && timers [k >> 1]->at > w->at)	409	while (k && heap [k >> 1]->at > w->at)
347	{	410	{
348	timers [k] = timers [k >> 1];	411	heap [k] = heap [k >> 1];
349	timers [k]->active = k + 1;	412	((W)heap [k])->active = k + 1;
350	k >>= 1;	413	k >>= 1;
351	}	414	}
352		415
353	timers [k] = w;	416	heap [k] = w;
354	timers [k]->active = k + 1;	417	((W)heap [k])->active = k + 1;
355		418
356	}	419	}
357		420
358	static void	421	static void
359	downheap (WT *timers, int N, int k)	422	downheap (WT *heap, int N, int k)
360	{	423	{
361	WT w = timers [k];	424	WT w = heap [k];
362		425
363	while (k < (N >> 1))	426	while (k < (N >> 1))
364	{	427	{
365	int j = k << 1;	428	int j = k << 1;
366		429
367	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	430	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
368	++j;	431	++j;
369		432
370	if (w->at <= timers [j]->at)	433	if (w->at <= heap [j]->at)
371	break;	434	break;
372		435
373	timers [k] = timers [j];	436	heap [k] = heap [j];
374	timers [k]->active = k + 1;	437	((W)heap [k])->active = k + 1;
375	k = j;	438	k = j;
376	}	439	}
377		440
378	timers [k] = w;	441	heap [k] = w;
379	timers [k]->active = k + 1;	442	((W)heap [k])->active = k + 1;
380	}	443	}
381		444
382	/*****************************************************************************/	445	/*****************************************************************************/
383		446
384	typedef struct	447	typedef struct
385	{	448	{
386	struct ev_signal *head;	449	struct ev_watcher_list *head;
387	sig_atomic_t volatile gotsig;	450	sig_atomic_t volatile gotsig;
388	} ANSIG;	451	} ANSIG;
389		452
390	static ANSIG *signals;	453	static ANSIG *signals;
391	static int signalmax;	454	static int signalmax;
…		…
407	}	470	}
408		471
409	static void	472	static void
410	sighandler (int signum)	473	sighandler (int signum)
411	{	474	{
		475	#if WIN32
		476	signal (signum, sighandler);
		477	#endif
		478
412	signals [signum - 1].gotsig = 1;	479	signals [signum - 1].gotsig = 1;
413		480
414	if (!gotsig)	481	if (!gotsig)
415	{	482	{
		483	int old_errno = errno;
416	gotsig = 1;	484	gotsig = 1;
417	write (sigpipe [1], &signum, 1);	485	write (sigpipe [1], &signum, 1);
		486	errno = old_errno;
418	}	487	}
419	}	488	}
420		489
421	static void	490	static void
422	sigcb (struct ev_io *iow, int revents)	491	sigcb (EV_P_ struct ev_io *iow, int revents)
423	{	492	{
424	struct ev_signal *w;	493	struct ev_watcher_list *w;
425	int signum;	494	int signum;
426		495
427	read (sigpipe [0], &revents, 1);	496	read (sigpipe [0], &revents, 1);
428	gotsig = 0;	497	gotsig = 0;
429		498
…		…
431	if (signals [signum].gotsig)	500	if (signals [signum].gotsig)
432	{	501	{
433	signals [signum].gotsig = 0;	502	signals [signum].gotsig = 0;
434		503
435	for (w = signals [signum].head; w; w = w->next)	504	for (w = signals [signum].head; w; w = w->next)
436	event ((W)w, EV_SIGNAL);	505	event (EV_A_ (W)w, EV_SIGNAL);
437	}	506	}
438	}	507	}
439		508
440	static void	509	static void
441	siginit (void)	510	siginit (EV_P)
442	{	511	{
		512	#ifndef WIN32
443	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	513	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
444	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	514	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
445		515
446	/* rather than sort out wether we really need nb, set it */	516	/* rather than sort out wether we really need nb, set it */
447	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	517	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
448	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	518	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		519	#endif
449		520
450	ev_io_set (&sigev, sigpipe [0], EV_READ);	521	ev_io_set (&sigev, sigpipe [0], EV_READ);
451	ev_io_start (&sigev);	522	ev_io_start (EV_A_ &sigev);
		523	ev_unref (EV_A); /* child watcher should not keep loop alive */
452	}	524	}
453		525
454	/*****************************************************************************/	526	/*****************************************************************************/
455		527
456	static struct ev_idle **idles;	528	#ifndef WIN32
457	static int idlemax, idlecnt;
458
459	static struct ev_prepare **prepares;
460	static int preparemax, preparecnt;
461
462	static struct ev_check **checks;
463	static int checkmax, checkcnt;
464
465	/*****************************************************************************/
466		529
467	static struct ev_child *childs [PID_HASHSIZE];	530	static struct ev_child *childs [PID_HASHSIZE];
468	static struct ev_signal childev;	531	static struct ev_signal childev;
469		532
470	#ifndef WCONTINUED	533	#ifndef WCONTINUED
471	# define WCONTINUED 0	534	# define WCONTINUED 0
472	#endif	535	#endif
473		536
474	static void	537	static void
475	childcb (struct ev_signal *sw, int revents)	538	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
476	{	539	{
477	struct ev_child *w;	540	struct ev_child *w;
		541
		542	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		543	if (w->pid == pid \|\| !w->pid)
		544	{
		545	ev_priority (w) = ev_priority (sw); /* need to do it now */
		546	w->rpid = pid;
		547	w->rstatus = status;
		548	event (EV_A_ (W)w, EV_CHILD);
		549	}
		550	}
		551
		552	static void
		553	childcb (EV_P_ struct ev_signal *sw, int revents)
		554	{
478	int pid, status;	555	int pid, status;
479		556
480	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	557	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
481	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	558	{
482	if (w->pid == pid \|\| !w->pid)	559	/* make sure we are called again until all childs have been reaped */
483	{	560	event (EV_A_ (W)sw, EV_SIGNAL);
484	w->status = status;	561
485	event ((W)w, EV_CHILD);	562	child_reap (EV_A_ sw, pid, pid, status);
486	}	563	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		564	}
487	}	565	}
		566
		567	#endif
488		568
489	/*****************************************************************************/	569	/*****************************************************************************/
490		570
491	#if EV_USE_KQUEUE	571	#if EV_USE_KQUEUE
492	# include "ev_kqueue.c"	572	# include "ev_kqueue.c"
…		…
511	ev_version_minor (void)	591	ev_version_minor (void)
512	{	592	{
513	return EV_VERSION_MINOR;	593	return EV_VERSION_MINOR;
514	}	594	}
515		595
516	/* return true if we are running with elevated privileges and ignore env variables */	596	/* return true if we are running with elevated privileges and should ignore env variables */
517	static int	597	static int
518	enable_secure ()	598	enable_secure (void)
519	{	599	{
		600	#ifdef WIN32
		601	return 0;
		602	#else
520	return getuid () != geteuid ()	603	return getuid () != geteuid ()
521	\|\| getgid () != getegid ();	604	\|\| getgid () != getegid ();
		605	#endif
522	}	606	}
523		607
524	int ev_init (int methods)	608	int
		609	ev_method (EV_P)
525	{	610	{
		611	return method;
		612	}
		613
		614	static void
		615	loop_init (EV_P_ int methods)
		616	{
526	if (!ev_method)	617	if (!method)
527	{	618	{
528	#if EV_USE_MONOTONIC	619	#if EV_USE_MONOTONIC
529	{	620	{
530	struct timespec ts;	621	struct timespec ts;
531	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	622	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
532	have_monotonic = 1;	623	have_monotonic = 1;
533	}	624	}
534	#endif	625	#endif
535		626
536	ev_now = ev_time ();	627	rt_now = ev_time ();
537	now = get_clock ();	628	mn_now = get_clock ();
538	now_floor = now;	629	now_floor = mn_now;
539	diff = ev_now - now;	630	rtmn_diff = rt_now - mn_now;
540
541	if (pipe (sigpipe))
542	return 0;
543		631
544	if (methods == EVMETHOD_AUTO)	632	if (methods == EVMETHOD_AUTO)
545	if (!enable_secure () && getenv ("LIBEV_METHODS"))	633	if (!enable_secure () && getenv ("LIBEV_METHODS"))
546	methods = atoi (getenv ("LIBEV_METHODS"));	634	methods = atoi (getenv ("LIBEV_METHODS"));
547	else	635	else
548	methods = EVMETHOD_ANY;	636	methods = EVMETHOD_ANY;
549		637
550	ev_method = 0;	638	method = 0;
		639	#if EV_USE_WIN32
		640	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		641	#endif
551	#if EV_USE_KQUEUE	642	#if EV_USE_KQUEUE
552	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	643	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
553	#endif	644	#endif
554	#if EV_USE_EPOLL	645	#if EV_USE_EPOLL
555	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	646	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
556	#endif	647	#endif
557	#if EV_USE_POLL	648	#if EV_USE_POLL
558	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	649	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
559	#endif	650	#endif
560	#if EV_USE_SELECT	651	#if EV_USE_SELECT
561	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	652	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
562	#endif	653	#endif
		654	}
		655	}
563		656
		657	void
		658	loop_destroy (EV_P)
		659	{
		660	int i;
		661
		662	#if EV_USE_WIN32
		663	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		664	#endif
		665	#if EV_USE_KQUEUE
		666	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		667	#endif
		668	#if EV_USE_EPOLL
		669	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		670	#endif
		671	#if EV_USE_POLL
		672	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		673	#endif
		674	#if EV_USE_SELECT
		675	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		676	#endif
		677
		678	for (i = NUMPRI; i--; )
		679	array_free (pending, [i]);
		680
		681	array_free (fdchange, );
		682	array_free (timer, );
		683	array_free (periodic, );
		684	array_free (idle, );
		685	array_free (prepare, );
		686	array_free (check, );
		687
		688	method = 0;
		689	/TODO/
		690	}
		691
		692	void
		693	loop_fork (EV_P)
		694	{
		695	/TODO/
		696	#if EV_USE_EPOLL
		697	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		698	#endif
		699	#if EV_USE_KQUEUE
		700	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		701	#endif
		702	}
		703
		704	#if EV_MULTIPLICITY
		705	struct ev_loop *
		706	ev_loop_new (int methods)
		707	{
		708	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));
		709
		710	loop_init (EV_A_ methods);
		711
		712	if (ev_method (EV_A))
		713	return loop;
		714
		715	return 0;
		716	}
		717
		718	void
		719	ev_loop_destroy (EV_P)
		720	{
		721	loop_destroy (EV_A);
		722	free (loop);
		723	}
		724
		725	void
		726	ev_loop_fork (EV_P)
		727	{
		728	loop_fork (EV_A);
		729	}
		730
		731	#endif
		732
		733	#if EV_MULTIPLICITY
		734	struct ev_loop default_loop_struct;
		735	static struct ev_loop *default_loop;
		736
		737	struct ev_loop *
		738	#else
		739	static int default_loop;
		740
		741	int
		742	#endif
		743	ev_default_loop (int methods)
		744	{
		745	if (sigpipe [0] == sigpipe [1])
		746	if (pipe (sigpipe))
		747	return 0;
		748
		749	if (!default_loop)
		750	{
		751	#if EV_MULTIPLICITY
		752	struct ev_loop *loop = default_loop = &default_loop_struct;
		753	#else
		754	default_loop = 1;
		755	#endif
		756
		757	loop_init (EV_A_ methods);
		758
564	if (ev_method)	759	if (ev_method (EV_A))
565	{	760	{
566	ev_watcher_init (&sigev, sigcb);	761	ev_watcher_init (&sigev, sigcb);
		762	ev_set_priority (&sigev, EV_MAXPRI);
567	siginit ();	763	siginit (EV_A);
568		764
		765	#ifndef WIN32
569	ev_signal_init (&childev, childcb, SIGCHLD);	766	ev_signal_init (&childev, childcb, SIGCHLD);
		767	ev_set_priority (&childev, EV_MAXPRI);
570	ev_signal_start (&childev);	768	ev_signal_start (EV_A_ &childev);
		769	ev_unref (EV_A); /* child watcher should not keep loop alive */
		770	#endif
571	}	771	}
		772	else
		773	default_loop = 0;
572	}	774	}
573		775
574	return ev_method;	776	return default_loop;
575	}	777	}
576		778
577	/*****************************************************************************/
578
579	void	779	void
580	ev_fork_prepare (void)	780	ev_default_destroy (void)
581	{	781	{
582	/* nop */	782	#if EV_MULTIPLICITY
583	}	783	struct ev_loop *loop = default_loop;
584
585	void
586	ev_fork_parent (void)
587	{
588	/* nop */
589	}
590
591	void
592	ev_fork_child (void)
593	{
594	#if EV_USE_EPOLL
595	if (ev_method == EVMETHOD_EPOLL)
596	epoll_postfork_child ();
597	#endif	784	#endif
598		785
		786	ev_ref (EV_A); /* child watcher */
		787	ev_signal_stop (EV_A_ &childev);
		788
		789	ev_ref (EV_A); /* signal watcher */
599	ev_io_stop (&sigev);	790	ev_io_stop (EV_A_ &sigev);
		791
		792	close (sigpipe [0]); sigpipe [0] = 0;
		793	close (sigpipe [1]); sigpipe [1] = 0;
		794
		795	loop_destroy (EV_A);
		796	}
		797
		798	void
		799	ev_default_fork (void)
		800	{
		801	#if EV_MULTIPLICITY
		802	struct ev_loop *loop = default_loop;
		803	#endif
		804
		805	loop_fork (EV_A);
		806
		807	ev_io_stop (EV_A_ &sigev);
600	close (sigpipe [0]);	808	close (sigpipe [0]);
601	close (sigpipe [1]);	809	close (sigpipe [1]);
602	pipe (sigpipe);	810	pipe (sigpipe);
		811
		812	ev_ref (EV_A); /* signal watcher */
603	siginit ();	813	siginit (EV_A);
604	}	814	}
605		815
606	/*****************************************************************************/	816	/*****************************************************************************/
607		817
608	static void	818	static void
609	call_pending (void)	819	call_pending (EV_P)
610	{	820	{
611	int pri;	821	int pri;
612		822
613	for (pri = NUMPRI; pri--; )	823	for (pri = NUMPRI; pri--; )
614	while (pendingcnt [pri])	824	while (pendingcnt [pri])
…		…
616	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	826	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
617		827
618	if (p->w)	828	if (p->w)
619	{	829	{
620	p->w->pending = 0;	830	p->w->pending = 0;
621	p->w->cb (p->w, p->events);	831	p->w->cb (EV_A_ p->w, p->events);
622	}	832	}
623	}	833	}
624	}	834	}
625		835
626	static void	836	static void
627	timers_reify (void)	837	timers_reify (EV_P)
628	{	838	{
629	while (timercnt && timers [0]->at <= now)	839	while (timercnt && ((WT)timers [0])->at <= mn_now)
630	{	840	{
631	struct ev_timer *w = timers [0];	841	struct ev_timer *w = timers [0];
		842
		843	assert (("inactive timer on timer heap detected", ev_is_active (w)));
632		844
633	/* first reschedule or stop timer */	845	/* first reschedule or stop timer */
634	if (w->repeat)	846	if (w->repeat)
635	{	847	{
636	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	848	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
637	w->at = now + w->repeat;	849	((WT)w)->at = mn_now + w->repeat;
638	downheap ((WT *)timers, timercnt, 0);	850	downheap ((WT *)timers, timercnt, 0);
639	}	851	}
640	else	852	else
641	ev_timer_stop (w); /* nonrepeating: stop timer */	853	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
642		854
643	event ((W)w, EV_TIMEOUT);	855	event (EV_A_ (W)w, EV_TIMEOUT);
644	}	856	}
645	}	857	}
646		858
647	static void	859	static void
648	periodics_reify (void)	860	periodics_reify (EV_P)
649	{	861	{
650	while (periodiccnt && periodics [0]->at <= ev_now)	862	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
651	{	863	{
652	struct ev_periodic *w = periodics [0];	864	struct ev_periodic *w = periodics [0];
		865
		866	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
653		867
654	/* first reschedule or stop timer */	868	/* first reschedule or stop timer */
655	if (w->interval)	869	if (w->interval)
656	{	870	{
657	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	871	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
658	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	872	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
659	downheap ((WT *)periodics, periodiccnt, 0);	873	downheap ((WT *)periodics, periodiccnt, 0);
660	}	874	}
661	else	875	else
662	ev_periodic_stop (w); /* nonrepeating: stop timer */	876	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
663		877
664	event ((W)w, EV_PERIODIC);	878	event (EV_A_ (W)w, EV_PERIODIC);
665	}	879	}
666	}	880	}
667		881
668	static void	882	static void
669	periodics_reschedule (ev_tstamp diff)	883	periodics_reschedule (EV_P)
670	{	884	{
671	int i;	885	int i;
672		886
673	/* adjust periodics after time jump */	887	/* adjust periodics after time jump */
674	for (i = 0; i < periodiccnt; ++i)	888	for (i = 0; i < periodiccnt; ++i)
675	{	889	{
676	struct ev_periodic *w = periodics [i];	890	struct ev_periodic *w = periodics [i];
677		891
678	if (w->interval)	892	if (w->interval)
679	{	893	{
680	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	894	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
681		895
682	if (fabs (diff) >= 1e-4)	896	if (fabs (diff) >= 1e-4)
683	{	897	{
684	ev_periodic_stop (w);	898	ev_periodic_stop (EV_A_ w);
685	ev_periodic_start (w);	899	ev_periodic_start (EV_A_ w);
686		900
687	i = 0; /* restart loop, inefficient, but time jumps should be rare */	901	i = 0; /* restart loop, inefficient, but time jumps should be rare */
688	}	902	}
689	}	903	}
690	}	904	}
691	}	905	}
692		906
693	static int	907	inline int
694	time_update_monotonic (void)	908	time_update_monotonic (EV_P)
695	{	909	{
696	now = get_clock ();	910	mn_now = get_clock ();
697		911
698	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	912	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
699	{	913	{
700	ev_now = now + diff;	914	rt_now = rtmn_diff + mn_now;
701	return 0;	915	return 0;
702	}	916	}
703	else	917	else
704	{	918	{
705	now_floor = now;	919	now_floor = mn_now;
706	ev_now = ev_time ();	920	rt_now = ev_time ();
707	return 1;	921	return 1;
708	}	922	}
709	}	923	}
710		924
711	static void	925	static void
712	time_update (void)	926	time_update (EV_P)
713	{	927	{
714	int i;	928	int i;
715		929
716	#if EV_USE_MONOTONIC	930	#if EV_USE_MONOTONIC
717	if (expect_true (have_monotonic))	931	if (expect_true (have_monotonic))
718	{	932	{
719	if (time_update_monotonic ())	933	if (time_update_monotonic (EV_A))
720	{	934	{
721	ev_tstamp odiff = diff;	935	ev_tstamp odiff = rtmn_diff;
722		936
723	for (i = 4; --i; ) /* loop a few times, before making important decisions */	937	for (i = 4; --i; ) /* loop a few times, before making important decisions */
724	{	938	{
725	diff = ev_now - now;	939	rtmn_diff = rt_now - mn_now;
726		940
727	if (fabs (odiff - diff) < MIN_TIMEJUMP)	941	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
728	return; /* all is well */	942	return; /* all is well */
729		943
730	ev_now = ev_time ();	944	rt_now = ev_time ();
731	now = get_clock ();	945	mn_now = get_clock ();
732	now_floor = now;	946	now_floor = mn_now;
733	}	947	}
734		948
735	periodics_reschedule (diff - odiff);	949	periodics_reschedule (EV_A);
736	/* no timer adjustment, as the monotonic clock doesn't jump */	950	/* no timer adjustment, as the monotonic clock doesn't jump */
		951	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
737	}	952	}
738	}	953	}
739	else	954	else
740	#endif	955	#endif
741	{	956	{
742	ev_now = ev_time ();	957	rt_now = ev_time ();
743		958
744	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	959	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
745	{	960	{
746	periodics_reschedule (ev_now - now);	961	periodics_reschedule (EV_A);
747		962
748	/* adjust timers. this is easy, as the offset is the same for all */	963	/* adjust timers. this is easy, as the offset is the same for all */
749	for (i = 0; i < timercnt; ++i)	964	for (i = 0; i < timercnt; ++i)
750	timers [i]->at += diff;	965	((WT)timers [i])->at += rt_now - mn_now;
751	}	966	}
752		967
753	now = ev_now;	968	mn_now = rt_now;
754	}	969	}
755	}	970	}
756		971
757	int ev_loop_done;	972	void
		973	ev_ref (EV_P)
		974	{
		975	++activecnt;
		976	}
758		977
		978	void
		979	ev_unref (EV_P)
		980	{
		981	--activecnt;
		982	}
		983
		984	static int loop_done;
		985
		986	void
759	void ev_loop (int flags)	987	ev_loop (EV_P_ int flags)
760	{	988	{
761	double block;	989	double block;
762	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	990	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
763		991
764	do	992	do
765	{	993	{
766	/* queue check watchers (and execute them) */	994	/* queue check watchers (and execute them) */
767	if (expect_false (preparecnt))	995	if (expect_false (preparecnt))
768	{	996	{
769	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	997	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
770	call_pending ();	998	call_pending (EV_A);
771	}	999	}
772		1000
773	/* update fd-related kernel structures */	1001	/* update fd-related kernel structures */
774	fd_reify ();	1002	fd_reify (EV_A);
775		1003
776	/* calculate blocking time */	1004	/* calculate blocking time */
777		1005
778	/* we only need this for !monotonic clockor timers, but as we basically	1006	/* we only need this for !monotonic clockor timers, but as we basically
779	always have timers, we just calculate it always */	1007	always have timers, we just calculate it always */
780	#if EV_USE_MONOTONIC	1008	#if EV_USE_MONOTONIC
781	if (expect_true (have_monotonic))	1009	if (expect_true (have_monotonic))
782	time_update_monotonic ();	1010	time_update_monotonic (EV_A);
783	else	1011	else
784	#endif	1012	#endif
785	{	1013	{
786	ev_now = ev_time ();	1014	rt_now = ev_time ();
787	now = ev_now;	1015	mn_now = rt_now;
788	}	1016	}
789		1017
790	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1018	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
791	block = 0.;	1019	block = 0.;
792	else	1020	else
793	{	1021	{
794	block = MAX_BLOCKTIME;	1022	block = MAX_BLOCKTIME;
795		1023
796	if (timercnt)	1024	if (timercnt)
797	{	1025	{
798	ev_tstamp to = timers [0]->at - now + method_fudge;	1026	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
799	if (block > to) block = to;	1027	if (block > to) block = to;
800	}	1028	}
801		1029
802	if (periodiccnt)	1030	if (periodiccnt)
803	{	1031	{
804	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1032	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
805	if (block > to) block = to;	1033	if (block > to) block = to;
806	}	1034	}
807		1035
808	if (block < 0.) block = 0.;	1036	if (block < 0.) block = 0.;
809	}	1037	}
810		1038
811	method_poll (block);	1039	method_poll (EV_A_ block);
812		1040
813	/* update ev_now, do magic */	1041	/* update rt_now, do magic */
814	time_update ();	1042	time_update (EV_A);
815		1043
816	/* queue pending timers and reschedule them */	1044	/* queue pending timers and reschedule them */
817	timers_reify (); /* relative timers called last */	1045	timers_reify (EV_A); /* relative timers called last */
818	periodics_reify (); /* absolute timers called first */	1046	periodics_reify (EV_A); /* absolute timers called first */
819		1047
820	/* queue idle watchers unless io or timers are pending */	1048	/* queue idle watchers unless io or timers are pending */
821	if (!pendingcnt)	1049	if (!pendingcnt)
822	queue_events ((W *)idles, idlecnt, EV_IDLE);	1050	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
823		1051
824	/* queue check watchers, to be executed first */	1052	/* queue check watchers, to be executed first */
825	if (checkcnt)	1053	if (checkcnt)
826	queue_events ((W *)checks, checkcnt, EV_CHECK);	1054	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
827		1055
828	call_pending ();	1056	call_pending (EV_A);
829	}	1057	}
830	while (!ev_loop_done);	1058	while (activecnt && !loop_done);
831		1059
832	if (ev_loop_done != 2)	1060	if (loop_done != 2)
833	ev_loop_done = 0;	1061	loop_done = 0;
		1062	}
		1063
		1064	void
		1065	ev_unloop (EV_P_ int how)
		1066	{
		1067	loop_done = how;
834	}	1068	}
835		1069
836	/*****************************************************************************/	1070	/*****************************************************************************/
837		1071
838	static void	1072	inline void
839	wlist_add (WL *head, WL elem)	1073	wlist_add (WL *head, WL elem)
840	{	1074	{
841	elem->next = *head;	1075	elem->next = *head;
842	*head = elem;	1076	*head = elem;
843	}	1077	}
844		1078
845	static void	1079	inline void
846	wlist_del (WL *head, WL elem)	1080	wlist_del (WL *head, WL elem)
847	{	1081	{
848	while (*head)	1082	while (*head)
849	{	1083	{
850	if (*head == elem)	1084	if (*head == elem)
…		…
855		1089
856	head = &(*head)->next;	1090	head = &(*head)->next;
857	}	1091	}
858	}	1092	}
859		1093
860	static void	1094	inline void
861	ev_clear_pending (W w)	1095	ev_clear_pending (EV_P_ W w)
862	{	1096	{
863	if (w->pending)	1097	if (w->pending)
864	{	1098	{
865	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1099	pendings [ABSPRI (w)][w->pending - 1].w = 0;
866	w->pending = 0;	1100	w->pending = 0;
867	}	1101	}
868	}	1102	}
869		1103
870	static void	1104	inline void
871	ev_start (W w, int active)	1105	ev_start (EV_P_ W w, int active)
872	{	1106	{
873	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1107	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
874	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1108	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
875		1109
876	w->active = active;	1110	w->active = active;
		1111	ev_ref (EV_A);
877	}	1112	}
878		1113
879	static void	1114	inline void
880	ev_stop (W w)	1115	ev_stop (EV_P_ W w)
881	{	1116	{
		1117	ev_unref (EV_A);
882	w->active = 0;	1118	w->active = 0;
883	}	1119	}
884		1120
885	/*****************************************************************************/	1121	/*****************************************************************************/
886		1122
887	void	1123	void
888	ev_io_start (struct ev_io *w)	1124	ev_io_start (EV_P_ struct ev_io *w)
889	{	1125	{
890	int fd = w->fd;	1126	int fd = w->fd;
891		1127
892	if (ev_is_active (w))	1128	if (ev_is_active (w))
893	return;	1129	return;
894		1130
895	assert (("ev_io_start called with negative fd", fd >= 0));	1131	assert (("ev_io_start called with negative fd", fd >= 0));
896		1132
897	ev_start ((W)w, 1);	1133	ev_start (EV_A_ (W)w, 1);
898	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1134	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
899	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1135	wlist_add ((WL *)&anfds[fd].head, (WL)w);
900		1136
901	fd_change (fd);	1137	fd_change (EV_A_ fd);
902	}	1138	}
903		1139
904	void	1140	void
905	ev_io_stop (struct ev_io *w)	1141	ev_io_stop (EV_P_ struct ev_io *w)
906	{	1142	{
907	ev_clear_pending ((W)w);	1143	ev_clear_pending (EV_A_ (W)w);
908	if (!ev_is_active (w))	1144	if (!ev_is_active (w))
909	return;	1145	return;
910		1146
911	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1147	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
912	ev_stop ((W)w);	1148	ev_stop (EV_A_ (W)w);
913		1149
914	fd_change (w->fd);	1150	fd_change (EV_A_ w->fd);
915	}	1151	}
916		1152
917	void	1153	void
918	ev_timer_start (struct ev_timer *w)	1154	ev_timer_start (EV_P_ struct ev_timer *w)
919	{	1155	{
920	if (ev_is_active (w))	1156	if (ev_is_active (w))
921	return;	1157	return;
922		1158
923	w->at += now;	1159	((WT)w)->at += mn_now;
924		1160
925	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1161	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
926		1162
927	ev_start ((W)w, ++timercnt);	1163	ev_start (EV_A_ (W)w, ++timercnt);
928	array_needsize (timers, timermax, timercnt, );	1164	array_needsize (timers, timermax, timercnt, );
929	timers [timercnt - 1] = w;	1165	timers [timercnt - 1] = w;
930	upheap ((WT *)timers, timercnt - 1);	1166	upheap ((WT *)timers, timercnt - 1);
931	}
932		1167
		1168	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1169	}
		1170
933	void	1171	void
934	ev_timer_stop (struct ev_timer *w)	1172	ev_timer_stop (EV_P_ struct ev_timer *w)
935	{	1173	{
936	ev_clear_pending ((W)w);	1174	ev_clear_pending (EV_A_ (W)w);
937	if (!ev_is_active (w))	1175	if (!ev_is_active (w))
938	return;	1176	return;
939		1177
		1178	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1179
940	if (w->active < timercnt--)	1180	if (((W)w)->active < timercnt--)
941	{	1181	{
942	timers [w->active - 1] = timers [timercnt];	1182	timers [((W)w)->active - 1] = timers [timercnt];
943	downheap ((WT *)timers, timercnt, w->active - 1);	1183	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
944	}	1184	}
945		1185
946	w->at = w->repeat;	1186	((WT)w)->at = w->repeat;
947		1187
948	ev_stop ((W)w);	1188	ev_stop (EV_A_ (W)w);
949	}	1189	}
950		1190
951	void	1191	void
952	ev_timer_again (struct ev_timer *w)	1192	ev_timer_again (EV_P_ struct ev_timer *w)
953	{	1193	{
954	if (ev_is_active (w))	1194	if (ev_is_active (w))
955	{	1195	{
956	if (w->repeat)	1196	if (w->repeat)
957	{	1197	{
958	w->at = now + w->repeat;	1198	((WT)w)->at = mn_now + w->repeat;
959	downheap ((WT *)timers, timercnt, w->active - 1);	1199	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
960	}	1200	}
961	else	1201	else
962	ev_timer_stop (w);	1202	ev_timer_stop (EV_A_ w);
963	}	1203	}
964	else if (w->repeat)	1204	else if (w->repeat)
965	ev_timer_start (w);	1205	ev_timer_start (EV_A_ w);
966	}	1206	}
967		1207
968	void	1208	void
969	ev_periodic_start (struct ev_periodic *w)	1209	ev_periodic_start (EV_P_ struct ev_periodic *w)
970	{	1210	{
971	if (ev_is_active (w))	1211	if (ev_is_active (w))
972	return;	1212	return;
973		1213
974	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1214	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
975		1215
976	/* this formula differs from the one in periodic_reify because we do not always round up */	1216	/* this formula differs from the one in periodic_reify because we do not always round up */
977	if (w->interval)	1217	if (w->interval)
978	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1218	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
979		1219
980	ev_start ((W)w, ++periodiccnt);	1220	ev_start (EV_A_ (W)w, ++periodiccnt);
981	array_needsize (periodics, periodicmax, periodiccnt, );	1221	array_needsize (periodics, periodicmax, periodiccnt, );
982	periodics [periodiccnt - 1] = w;	1222	periodics [periodiccnt - 1] = w;
983	upheap ((WT *)periodics, periodiccnt - 1);	1223	upheap ((WT *)periodics, periodiccnt - 1);
984	}
985		1224
		1225	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1226	}
		1227
986	void	1228	void
987	ev_periodic_stop (struct ev_periodic *w)	1229	ev_periodic_stop (EV_P_ struct ev_periodic *w)
988	{	1230	{
989	ev_clear_pending ((W)w);	1231	ev_clear_pending (EV_A_ (W)w);
990	if (!ev_is_active (w))	1232	if (!ev_is_active (w))
991	return;	1233	return;
992		1234
		1235	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1236
993	if (w->active < periodiccnt--)	1237	if (((W)w)->active < periodiccnt--)
994	{	1238	{
995	periodics [w->active - 1] = periodics [periodiccnt];	1239	periodics [((W)w)->active - 1] = periodics [periodiccnt];
996	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1240	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
997	}	1241	}
998		1242
999	ev_stop ((W)w);	1243	ev_stop (EV_A_ (W)w);
1000	}	1244	}
1001		1245
1002	void	1246	void
1003	ev_signal_start (struct ev_signal *w)	1247	ev_idle_start (EV_P_ struct ev_idle *w)
1004	{	1248	{
1005	if (ev_is_active (w))	1249	if (ev_is_active (w))
1006	return;	1250	return;
1007		1251
		1252	ev_start (EV_A_ (W)w, ++idlecnt);
		1253	array_needsize (idles, idlemax, idlecnt, );
		1254	idles [idlecnt - 1] = w;
		1255	}
		1256
		1257	void
		1258	ev_idle_stop (EV_P_ struct ev_idle *w)
		1259	{
		1260	ev_clear_pending (EV_A_ (W)w);
		1261	if (ev_is_active (w))
		1262	return;
		1263
		1264	idles [((W)w)->active - 1] = idles [--idlecnt];
		1265	ev_stop (EV_A_ (W)w);
		1266	}
		1267
		1268	void
		1269	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1270	{
		1271	if (ev_is_active (w))
		1272	return;
		1273
		1274	ev_start (EV_A_ (W)w, ++preparecnt);
		1275	array_needsize (prepares, preparemax, preparecnt, );
		1276	prepares [preparecnt - 1] = w;
		1277	}
		1278
		1279	void
		1280	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1281	{
		1282	ev_clear_pending (EV_A_ (W)w);
		1283	if (ev_is_active (w))
		1284	return;
		1285
		1286	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1287	ev_stop (EV_A_ (W)w);
		1288	}
		1289
		1290	void
		1291	ev_check_start (EV_P_ struct ev_check *w)
		1292	{
		1293	if (ev_is_active (w))
		1294	return;
		1295
		1296	ev_start (EV_A_ (W)w, ++checkcnt);
		1297	array_needsize (checks, checkmax, checkcnt, );
		1298	checks [checkcnt - 1] = w;
		1299	}
		1300
		1301	void
		1302	ev_check_stop (EV_P_ struct ev_check *w)
		1303	{
		1304	ev_clear_pending (EV_A_ (W)w);
		1305	if (ev_is_active (w))
		1306	return;
		1307
		1308	checks [((W)w)->active - 1] = checks [--checkcnt];
		1309	ev_stop (EV_A_ (W)w);
		1310	}
		1311
		1312	#ifndef SA_RESTART
		1313	# define SA_RESTART 0
		1314	#endif
		1315
		1316	void
		1317	ev_signal_start (EV_P_ struct ev_signal *w)
		1318	{
		1319	#if EV_MULTIPLICITY
		1320	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1321	#endif
		1322	if (ev_is_active (w))
		1323	return;
		1324
1008	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1325	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1009		1326
1010	ev_start ((W)w, 1);	1327	ev_start (EV_A_ (W)w, 1);
1011	array_needsize (signals, signalmax, w->signum, signals_init);	1328	array_needsize (signals, signalmax, w->signum, signals_init);
1012	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1329	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1013		1330
1014	if (!w->next)	1331	if (!((WL)w)->next)
1015	{	1332	{
		1333	#if WIN32
		1334	signal (w->signum, sighandler);
		1335	#else
1016	struct sigaction sa;	1336	struct sigaction sa;
1017	sa.sa_handler = sighandler;	1337	sa.sa_handler = sighandler;
1018	sigfillset (&sa.sa_mask);	1338	sigfillset (&sa.sa_mask);
1019	sa.sa_flags = 0;	1339	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1020	sigaction (w->signum, &sa, 0);	1340	sigaction (w->signum, &sa, 0);
		1341	#endif
1021	}	1342	}
1022	}	1343	}
1023		1344
1024	void	1345	void
1025	ev_signal_stop (struct ev_signal *w)	1346	ev_signal_stop (EV_P_ struct ev_signal *w)
1026	{	1347	{
1027	ev_clear_pending ((W)w);	1348	ev_clear_pending (EV_A_ (W)w);
1028	if (!ev_is_active (w))	1349	if (!ev_is_active (w))
1029	return;	1350	return;
1030		1351
1031	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1352	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1032	ev_stop ((W)w);	1353	ev_stop (EV_A_ (W)w);
1033		1354
1034	if (!signals [w->signum - 1].head)	1355	if (!signals [w->signum - 1].head)
1035	signal (w->signum, SIG_DFL);	1356	signal (w->signum, SIG_DFL);
1036	}	1357	}
1037		1358
1038	void	1359	void
1039	ev_idle_start (struct ev_idle *w)	1360	ev_child_start (EV_P_ struct ev_child *w)
1040	{	1361	{
		1362	#if EV_MULTIPLICITY
		1363	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1364	#endif
1041	if (ev_is_active (w))	1365	if (ev_is_active (w))
1042	return;	1366	return;
1043		1367
1044	ev_start ((W)w, ++idlecnt);	1368	ev_start (EV_A_ (W)w, 1);
1045	array_needsize (idles, idlemax, idlecnt, );	1369	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1046	idles [idlecnt - 1] = w;
1047	}	1370	}
1048		1371
1049	void	1372	void
1050	ev_idle_stop (struct ev_idle *w)	1373	ev_child_stop (EV_P_ struct ev_child *w)
1051	{	1374	{
1052	ev_clear_pending ((W)w);	1375	ev_clear_pending (EV_A_ (W)w);
1053	if (ev_is_active (w))	1376	if (ev_is_active (w))
1054	return;	1377	return;
1055		1378
1056	idles [w->active - 1] = idles [--idlecnt];
1057	ev_stop ((W)w);
1058	}
1059
1060	void
1061	ev_prepare_start (struct ev_prepare *w)
1062	{
1063	if (ev_is_active (w))
1064	return;
1065
1066	ev_start ((W)w, ++preparecnt);
1067	array_needsize (prepares, preparemax, preparecnt, );
1068	prepares [preparecnt - 1] = w;
1069	}
1070
1071	void
1072	ev_prepare_stop (struct ev_prepare *w)
1073	{
1074	ev_clear_pending ((W)w);
1075	if (ev_is_active (w))
1076	return;
1077
1078	prepares [w->active - 1] = prepares [--preparecnt];
1079	ev_stop ((W)w);
1080	}
1081
1082	void
1083	ev_check_start (struct ev_check *w)
1084	{
1085	if (ev_is_active (w))
1086	return;
1087
1088	ev_start ((W)w, ++checkcnt);
1089	array_needsize (checks, checkmax, checkcnt, );
1090	checks [checkcnt - 1] = w;
1091	}
1092
1093	void
1094	ev_check_stop (struct ev_check *w)
1095	{
1096	ev_clear_pending ((W)w);
1097	if (ev_is_active (w))
1098	return;
1099
1100	checks [w->active - 1] = checks [--checkcnt];
1101	ev_stop ((W)w);
1102	}
1103
1104	void
1105	ev_child_start (struct ev_child *w)
1106	{
1107	if (ev_is_active (w))
1108	return;
1109
1110	ev_start ((W)w, 1);
1111	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1112	}
1113
1114	void
1115	ev_child_stop (struct ev_child *w)
1116	{
1117	ev_clear_pending ((W)w);
1118	if (ev_is_active (w))
1119	return;
1120
1121	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1379	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1122	ev_stop ((W)w);	1380	ev_stop (EV_A_ (W)w);
1123	}	1381	}
1124		1382
1125	/*****************************************************************************/	1383	/*****************************************************************************/
1126		1384
1127	struct ev_once	1385	struct ev_once
…		…
1131	void (cb)(int revents, void arg);	1389	void (cb)(int revents, void arg);
1132	void *arg;	1390	void *arg;
1133	};	1391	};
1134		1392
1135	static void	1393	static void
1136	once_cb (struct ev_once *once, int revents)	1394	once_cb (EV_P_ struct ev_once *once, int revents)
1137	{	1395	{
1138	void (cb)(int revents, void arg) = once->cb;	1396	void (cb)(int revents, void arg) = once->cb;
1139	void *arg = once->arg;	1397	void *arg = once->arg;
1140		1398
1141	ev_io_stop (&once->io);	1399	ev_io_stop (EV_A_ &once->io);
1142	ev_timer_stop (&once->to);	1400	ev_timer_stop (EV_A_ &once->to);
1143	free (once);	1401	free (once);
1144		1402
1145	cb (revents, arg);	1403	cb (revents, arg);
1146	}	1404	}
1147		1405
1148	static void	1406	static void
1149	once_cb_io (struct ev_io *w, int revents)	1407	once_cb_io (EV_P_ struct ev_io *w, int revents)
1150	{	1408	{
1151	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1409	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1152	}	1410	}
1153		1411
1154	static void	1412	static void
1155	once_cb_to (struct ev_timer *w, int revents)	1413	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1156	{	1414	{
1157	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1415	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1158	}	1416	}
1159		1417
1160	void	1418	void
1161	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1419	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1162	{	1420	{
1163	struct ev_once *once = malloc (sizeof (struct ev_once));	1421	struct ev_once *once = malloc (sizeof (struct ev_once));
1164		1422
1165	if (!once)	1423	if (!once)
1166	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1424	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
…		…
1171		1429
1172	ev_watcher_init (&once->io, once_cb_io);	1430	ev_watcher_init (&once->io, once_cb_io);
1173	if (fd >= 0)	1431	if (fd >= 0)
1174	{	1432	{
1175	ev_io_set (&once->io, fd, events);	1433	ev_io_set (&once->io, fd, events);
1176	ev_io_start (&once->io);	1434	ev_io_start (EV_A_ &once->io);
1177	}	1435	}
1178		1436
1179	ev_watcher_init (&once->to, once_cb_to);	1437	ev_watcher_init (&once->to, once_cb_to);
1180	if (timeout >= 0.)	1438	if (timeout >= 0.)
1181	{	1439	{
1182	ev_timer_set (&once->to, timeout, 0.);	1440	ev_timer_set (&once->to, timeout, 0.);
1183	ev_timer_start (&once->to);	1441	ev_timer_start (EV_A_ &once->to);
1184	}	1442	}
1185	}	1443	}
1186	}	1444	}
1187		1445
1188	/*****************************************************************************/
1189
1190	#if 0
1191
1192	struct ev_io wio;
1193
1194	static void
1195	sin_cb (struct ev_io *w, int revents)
1196	{
1197	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1198	}
1199
1200	static void
1201	ocb (struct ev_timer *w, int revents)
1202	{
1203	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1204	ev_timer_stop (w);
1205	ev_timer_start (w);
1206	}
1207
1208	static void
1209	scb (struct ev_signal *w, int revents)
1210	{
1211	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1212	ev_io_stop (&wio);
1213	ev_io_start (&wio);
1214	}
1215
1216	static void
1217	gcb (struct ev_signal *w, int revents)
1218	{
1219	fprintf (stderr, "generic %x\n", revents);
1220
1221	}
1222
1223	int main (void)
1224	{
1225	ev_init (0);
1226
1227	ev_io_init (&wio, sin_cb, 0, EV_READ);
1228	ev_io_start (&wio);
1229
1230	struct ev_timer t[10000];
1231
1232	#if 0
1233	int i;
1234	for (i = 0; i < 10000; ++i)
1235	{
1236	struct ev_timer *w = t + i;
1237	ev_watcher_init (w, ocb, i);
1238	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1239	ev_timer_start (w);
1240	if (drand48 () < 0.5)
1241	ev_timer_stop (w);
1242	}
1243	#endif
1244
1245	struct ev_timer t1;
1246	ev_timer_init (&t1, ocb, 5, 10);
1247	ev_timer_start (&t1);
1248
1249	struct ev_signal sig;
1250	ev_signal_init (&sig, scb, SIGQUIT);
1251	ev_signal_start (&sig);
1252
1253	struct ev_check cw;
1254	ev_check_init (&cw, gcb);
1255	ev_check_start (&cw);
1256
1257	struct ev_idle iw;
1258	ev_idle_init (&iw, gcb);
1259	ev_idle_start (&iw);
1260
1261	ev_loop (0);
1262
1263	return 0;
1264	}
1265
1266	#endif
1267
1268
1269
1270

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Comparing libev/ev.c (file contents): Revision 1.44 by root, Fri Nov 2 20:59:14 2007 UTC vs. Revision 1.67 by root, Mon Nov 5 16:42:15 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.44 by root, Fri Nov 2 20:59:14 2007 UTC vs.
Revision 1.67 by root, Mon Nov 5 16:42:15 2007 UTC