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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 1.68 by root, Mon Nov 5 20:19:00 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	WL 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);
328	fd_kill (fd);	381	fd_kill (EV_A_ fd);
329	return;	382	return;
330	}	383	}
331	}	384	}
332		385
		386	/* susually called after fork if method needs to re-arm all fds from scratch */
		387	static void
		388	fd_rearm_all (EV_P)
		389	{
		390	int fd;
		391
		392	/* this should be highly optimised to not do anything but set a flag */
		393	for (fd = 0; fd < anfdmax; ++fd)
		394	if (anfds [fd].events)
		395	{
		396	anfds [fd].events = 0;
		397	fd_change (EV_A_ fd);
		398	}
		399	}
		400
333	/*****************************************************************************/	401	/*****************************************************************************/
334		402
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	403	static void
342	upheap (WT *timers, int k)	404	upheap (WT *heap, int k)
343	{	405	{
344	WT w = timers [k];	406	WT w = heap [k];
345		407
346	while (k && timers [k >> 1]->at > w->at)	408	while (k && heap [k >> 1]->at > w->at)
347	{	409	{
348	timers [k] = timers [k >> 1];	410	heap [k] = heap [k >> 1];
349	timers [k]->active = k + 1;	411	((W)heap [k])->active = k + 1;
350	k >>= 1;	412	k >>= 1;
351	}	413	}
352		414
353	timers [k] = w;	415	heap [k] = w;
354	timers [k]->active = k + 1;	416	((W)heap [k])->active = k + 1;
355		417
356	}	418	}
357		419
358	static void	420	static void
359	downheap (WT *timers, int N, int k)	421	downheap (WT *heap, int N, int k)
360	{	422	{
361	WT w = timers [k];	423	WT w = heap [k];
362		424
363	while (k < (N >> 1))	425	while (k < (N >> 1))
364	{	426	{
365	int j = k << 1;	427	int j = k << 1;
366		428
367	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	429	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
368	++j;	430	++j;
369		431
370	if (w->at <= timers [j]->at)	432	if (w->at <= heap [j]->at)
371	break;	433	break;
372		434
373	timers [k] = timers [j];	435	heap [k] = heap [j];
374	timers [k]->active = k + 1;	436	((W)heap [k])->active = k + 1;
375	k = j;	437	k = j;
376	}	438	}
377		439
378	timers [k] = w;	440	heap [k] = w;
379	timers [k]->active = k + 1;	441	((W)heap [k])->active = k + 1;
380	}	442	}
381		443
382	/*****************************************************************************/	444	/*****************************************************************************/
383		445
384	typedef struct	446	typedef struct
385	{	447	{
386	struct ev_signal *head;	448	WL head;
387	sig_atomic_t volatile gotsig;	449	sig_atomic_t volatile gotsig;
388	} ANSIG;	450	} ANSIG;
389		451
390	static ANSIG *signals;	452	static ANSIG *signals;
391	static int signalmax;	453	static int signalmax;
…		…
407	}	469	}
408		470
409	static void	471	static void
410	sighandler (int signum)	472	sighandler (int signum)
411	{	473	{
		474	#if WIN32
		475	signal (signum, sighandler);
		476	#endif
		477
412	signals [signum - 1].gotsig = 1;	478	signals [signum - 1].gotsig = 1;
413		479
414	if (!gotsig)	480	if (!gotsig)
415	{	481	{
		482	int old_errno = errno;
416	gotsig = 1;	483	gotsig = 1;
417	write (sigpipe [1], &signum, 1);	484	write (sigpipe [1], &signum, 1);
		485	errno = old_errno;
418	}	486	}
419	}	487	}
420		488
421	static void	489	static void
422	sigcb (struct ev_io *iow, int revents)	490	sigcb (EV_P_ struct ev_io *iow, int revents)
423	{	491	{
424	struct ev_signal *w;	492	WL w;
425	int signum;	493	int signum;
426		494
427	read (sigpipe [0], &revents, 1);	495	read (sigpipe [0], &revents, 1);
428	gotsig = 0;	496	gotsig = 0;
429		497
…		…
431	if (signals [signum].gotsig)	499	if (signals [signum].gotsig)
432	{	500	{
433	signals [signum].gotsig = 0;	501	signals [signum].gotsig = 0;
434		502
435	for (w = signals [signum].head; w; w = w->next)	503	for (w = signals [signum].head; w; w = w->next)
436	event ((W)w, EV_SIGNAL);	504	event (EV_A_ (W)w, EV_SIGNAL);
437	}	505	}
438	}	506	}
439		507
440	static void	508	static void
441	siginit (void)	509	siginit (EV_P)
442	{	510	{
		511	#ifndef WIN32
443	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	512	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
444	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	513	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
445		514
446	/* rather than sort out wether we really need nb, set it */	515	/* rather than sort out wether we really need nb, set it */
447	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	516	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
448	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	517	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		518	#endif
449		519
450	ev_io_set (&sigev, sigpipe [0], EV_READ);	520	ev_io_set (&sigev, sigpipe [0], EV_READ);
451	ev_io_start (&sigev);	521	ev_io_start (EV_A_ &sigev);
		522	ev_unref (EV_A); /* child watcher should not keep loop alive */
452	}	523	}
453		524
454	/*****************************************************************************/	525	/*****************************************************************************/
455		526
456	static struct ev_idle **idles;	527	#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		528
467	static struct ev_child *childs [PID_HASHSIZE];	529	static struct ev_child *childs [PID_HASHSIZE];
468	static struct ev_signal childev;	530	static struct ev_signal childev;
469		531
470	#ifndef WCONTINUED	532	#ifndef WCONTINUED
471	# define WCONTINUED 0	533	# define WCONTINUED 0
472	#endif	534	#endif
473		535
474	static void	536	static void
475	childcb (struct ev_signal *sw, int revents)	537	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
476	{	538	{
477	struct ev_child *w;	539	struct ev_child *w;
		540
		541	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		542	if (w->pid == pid || !w->pid)
		543	{
		544	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		545	w->rpid = pid;
		546	w->rstatus = status;
		547	event (EV_A_ (W)w, EV_CHILD);
		548	}
		549	}
		550
		551	static void
		552	childcb (EV_P_ struct ev_signal *sw, int revents)
		553	{
478	int pid, status;	554	int pid, status;
479		555
480	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	556	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
481	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	557	{
482	if (w->pid == pid || !w->pid)	558	/* make sure we are called again until all childs have been reaped */
483	{	559	event (EV_A_ (W)sw, EV_SIGNAL);
484	w->status = status;	560
485	event ((W)w, EV_CHILD);	561	child_reap (EV_A_ sw, pid, pid, status);
486	}	562	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		563	}
487	}	564	}
		565
		566	#endif
488		567
489	/*****************************************************************************/	568	/*****************************************************************************/
490		569
491	#if EV_USE_KQUEUE	570	#if EV_USE_KQUEUE
492	# include "ev_kqueue.c"	571	# include "ev_kqueue.c"
…		…
511	ev_version_minor (void)	590	ev_version_minor (void)
512	{	591	{
513	return EV_VERSION_MINOR;	592	return EV_VERSION_MINOR;
514	}	593	}
515		594
516	/* return true if we are running with elevated privileges and ignore env variables */	595	/* return true if we are running with elevated privileges and should ignore env variables */
517	static int	596	static int
518	enable_secure ()	597	enable_secure (void)
519	{	598	{
		599	#ifdef WIN32
		600	return 0;
		601	#else
520	return getuid () != geteuid ()	602	return getuid () != geteuid ()
521	|| getgid () != getegid ();	603	|| getgid () != getegid ();
		604	#endif
522	}	605	}
523		606
524	int ev_init (int methods)	607	int
		608	ev_method (EV_P)
525	{	609	{
		610	return method;
		611	}
		612
		613	static void
		614	loop_init (EV_P_ int methods)
		615	{
526	if (!ev_method)	616	if (!method)
527	{	617	{
528	#if EV_USE_MONOTONIC	618	#if EV_USE_MONOTONIC
529	{	619	{
530	struct timespec ts;	620	struct timespec ts;
531	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	621	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
532	have_monotonic = 1;	622	have_monotonic = 1;
533	}	623	}
534	#endif	624	#endif
535		625
536	ev_now = ev_time ();	626	rt_now = ev_time ();
537	now = get_clock ();	627	mn_now = get_clock ();
538	now_floor = now;	628	now_floor = mn_now;
539	diff = ev_now - now;	629	rtmn_diff = rt_now - mn_now;
540
541	if (pipe (sigpipe))
542	return 0;
543		630
544	if (methods == EVMETHOD_AUTO)	631	if (methods == EVMETHOD_AUTO)
545	if (!enable_secure () && getenv ("LIBEV_METHODS"))	632	if (!enable_secure () && getenv ("LIBEV_METHODS"))
546	methods = atoi (getenv ("LIBEV_METHODS"));	633	methods = atoi (getenv ("LIBEV_METHODS"));
547	else	634	else
548	methods = EVMETHOD_ANY;	635	methods = EVMETHOD_ANY;
549		636
550	ev_method = 0;	637	method = 0;
		638	#if EV_USE_WIN32
		639	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		640	#endif
551	#if EV_USE_KQUEUE	641	#if EV_USE_KQUEUE
552	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	642	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
553	#endif	643	#endif
554	#if EV_USE_EPOLL	644	#if EV_USE_EPOLL
555	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	645	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
556	#endif	646	#endif
557	#if EV_USE_POLL	647	#if EV_USE_POLL
558	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	648	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
559	#endif	649	#endif
560	#if EV_USE_SELECT	650	#if EV_USE_SELECT
561	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	651	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
562	#endif	652	#endif
		653	}
		654	}
563		655
		656	void
		657	loop_destroy (EV_P)
		658	{
		659	int i;
		660
		661	#if EV_USE_WIN32
		662	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		663	#endif
		664	#if EV_USE_KQUEUE
		665	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		666	#endif
		667	#if EV_USE_EPOLL
		668	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		669	#endif
		670	#if EV_USE_POLL
		671	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		672	#endif
		673	#if EV_USE_SELECT
		674	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		675	#endif
		676
		677	for (i = NUMPRI; i--; )
		678	array_free (pending, [i]);
		679
		680	array_free (fdchange, );
		681	array_free (timer, );
		682	array_free (periodic, );
		683	array_free (idle, );
		684	array_free (prepare, );
		685	array_free (check, );
		686
		687	method = 0;
		688	/*TODO*/
		689	}
		690
		691	void
		692	loop_fork (EV_P)
		693	{
		694	/*TODO*/
		695	#if EV_USE_EPOLL
		696	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		697	#endif
		698	#if EV_USE_KQUEUE
		699	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		700	#endif
		701	}
		702
		703	#if EV_MULTIPLICITY
		704	struct ev_loop *
		705	ev_loop_new (int methods)
		706	{
		707	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));
		708
		709	loop_init (EV_A_ methods);
		710
		711	if (ev_method (EV_A))
		712	return loop;
		713
		714	return 0;
		715	}
		716
		717	void
		718	ev_loop_destroy (EV_P)
		719	{
		720	loop_destroy (EV_A);
		721	free (loop);
		722	}
		723
		724	void
		725	ev_loop_fork (EV_P)
		726	{
		727	loop_fork (EV_A);
		728	}
		729
		730	#endif
		731
		732	#if EV_MULTIPLICITY
		733	struct ev_loop default_loop_struct;
		734	static struct ev_loop *default_loop;
		735
		736	struct ev_loop *
		737	#else
		738	static int default_loop;
		739
		740	int
		741	#endif
		742	ev_default_loop (int methods)
		743	{
		744	if (sigpipe [0] == sigpipe [1])
		745	if (pipe (sigpipe))
		746	return 0;
		747
		748	if (!default_loop)
		749	{
		750	#if EV_MULTIPLICITY
		751	struct ev_loop *loop = default_loop = &default_loop_struct;
		752	#else
		753	default_loop = 1;
		754	#endif
		755
		756	loop_init (EV_A_ methods);
		757
564	if (ev_method)	758	if (ev_method (EV_A))
565	{	759	{
566	ev_watcher_init (&sigev, sigcb);	760	ev_watcher_init (&sigev, sigcb);
		761	ev_set_priority (&sigev, EV_MAXPRI);
567	siginit ();	762	siginit (EV_A);
568		763
		764	#ifndef WIN32
569	ev_signal_init (&childev, childcb, SIGCHLD);	765	ev_signal_init (&childev, childcb, SIGCHLD);
		766	ev_set_priority (&childev, EV_MAXPRI);
570	ev_signal_start (&childev);	767	ev_signal_start (EV_A_ &childev);
		768	ev_unref (EV_A); /* child watcher should not keep loop alive */
		769	#endif
571	}	770	}
		771	else
		772	default_loop = 0;
572	}	773	}
573		774
574	return ev_method;	775	return default_loop;
575	}	776	}
576		777
577	/*****************************************************************************/
578
579	void	778	void
580	ev_fork_prepare (void)	779	ev_default_destroy (void)
581	{	780	{
582	/* nop */	781	#if EV_MULTIPLICITY
583	}	782	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	783	#endif
598		784
		785	ev_ref (EV_A); /* child watcher */
		786	ev_signal_stop (EV_A_ &childev);
		787
		788	ev_ref (EV_A); /* signal watcher */
599	ev_io_stop (&sigev);	789	ev_io_stop (EV_A_ &sigev);
		790
		791	close (sigpipe [0]); sigpipe [0] = 0;
		792	close (sigpipe [1]); sigpipe [1] = 0;
		793
		794	loop_destroy (EV_A);
		795	}
		796
		797	void
		798	ev_default_fork (void)
		799	{
		800	#if EV_MULTIPLICITY
		801	struct ev_loop *loop = default_loop;
		802	#endif
		803
		804	loop_fork (EV_A);
		805
		806	ev_io_stop (EV_A_ &sigev);
600	close (sigpipe [0]);	807	close (sigpipe [0]);
601	close (sigpipe [1]);	808	close (sigpipe [1]);
602	pipe (sigpipe);	809	pipe (sigpipe);
		810
		811	ev_ref (EV_A); /* signal watcher */
603	siginit ();	812	siginit (EV_A);
604	}	813	}
605		814
606	/*****************************************************************************/	815	/*****************************************************************************/
607		816
608	static void	817	static void
609	call_pending (void)	818	call_pending (EV_P)
610	{	819	{
611	int pri;	820	int pri;
612		821
613	for (pri = NUMPRI; pri--; )	822	for (pri = NUMPRI; pri--; )
614	while (pendingcnt [pri])	823	while (pendingcnt [pri])
…		…
616	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	825	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
617		826
618	if (p->w)	827	if (p->w)
619	{	828	{
620	p->w->pending = 0;	829	p->w->pending = 0;
621	p->w->cb (p->w, p->events);	830	p->w->cb (EV_A_ p->w, p->events);
622	}	831	}
623	}	832	}
624	}	833	}
625		834
626	static void	835	static void
627	timers_reify (void)	836	timers_reify (EV_P)
628	{	837	{
629	while (timercnt && timers [0]->at <= now)	838	while (timercnt && ((WT)timers [0])->at <= mn_now)
630	{	839	{
631	struct ev_timer *w = timers [0];	840	struct ev_timer *w = timers [0];
		841
		842	assert (("inactive timer on timer heap detected", ev_is_active (w)));
632		843
633	/* first reschedule or stop timer */	844	/* first reschedule or stop timer */
634	if (w->repeat)	845	if (w->repeat)
635	{	846	{
636	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	847	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
637	w->at = now + w->repeat;	848	((WT)w)->at = mn_now + w->repeat;
638	downheap ((WT *)timers, timercnt, 0);	849	downheap ((WT *)timers, timercnt, 0);
639	}	850	}
640	else	851	else
641	ev_timer_stop (w); /* nonrepeating: stop timer */	852	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
642		853
643	event ((W)w, EV_TIMEOUT);	854	event (EV_A_ (W)w, EV_TIMEOUT);
644	}	855	}
645	}	856	}
646		857
647	static void	858	static void
648	periodics_reify (void)	859	periodics_reify (EV_P)
649	{	860	{
650	while (periodiccnt && periodics [0]->at <= ev_now)	861	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
651	{	862	{
652	struct ev_periodic *w = periodics [0];	863	struct ev_periodic *w = periodics [0];
		864
		865	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
653		866
654	/* first reschedule or stop timer */	867	/* first reschedule or stop timer */
655	if (w->interval)	868	if (w->interval)
656	{	869	{
657	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	870	((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));	871	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
659	downheap ((WT *)periodics, periodiccnt, 0);	872	downheap ((WT *)periodics, periodiccnt, 0);
660	}	873	}
661	else	874	else
662	ev_periodic_stop (w); /* nonrepeating: stop timer */	875	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
663		876
664	event ((W)w, EV_PERIODIC);	877	event (EV_A_ (W)w, EV_PERIODIC);
665	}	878	}
666	}	879	}
667		880
668	static void	881	static void
669	periodics_reschedule (ev_tstamp diff)	882	periodics_reschedule (EV_P)
670	{	883	{
671	int i;	884	int i;
672		885
673	/* adjust periodics after time jump */	886	/* adjust periodics after time jump */
674	for (i = 0; i < periodiccnt; ++i)	887	for (i = 0; i < periodiccnt; ++i)
675	{	888	{
676	struct ev_periodic *w = periodics [i];	889	struct ev_periodic *w = periodics [i];
677		890
678	if (w->interval)	891	if (w->interval)
679	{	892	{
680	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	893	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
681		894
682	if (fabs (diff) >= 1e-4)	895	if (fabs (diff) >= 1e-4)
683	{	896	{
684	ev_periodic_stop (w);	897	ev_periodic_stop (EV_A_ w);
685	ev_periodic_start (w);	898	ev_periodic_start (EV_A_ w);
686		899
687	i = 0; /* restart loop, inefficient, but time jumps should be rare */	900	i = 0; /* restart loop, inefficient, but time jumps should be rare */
688	}	901	}
689	}	902	}
690	}	903	}
691	}	904	}
692		905
693	static int	906	inline int
694	time_update_monotonic (void)	907	time_update_monotonic (EV_P)
695	{	908	{
696	now = get_clock ();	909	mn_now = get_clock ();
697		910
698	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	911	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
699	{	912	{
700	ev_now = now + diff;	913	rt_now = rtmn_diff + mn_now;
701	return 0;	914	return 0;
702	}	915	}
703	else	916	else
704	{	917	{
705	now_floor = now;	918	now_floor = mn_now;
706	ev_now = ev_time ();	919	rt_now = ev_time ();
707	return 1;	920	return 1;
708	}	921	}
709	}	922	}
710		923
711	static void	924	static void
712	time_update (void)	925	time_update (EV_P)
713	{	926	{
714	int i;	927	int i;
715		928
716	#if EV_USE_MONOTONIC	929	#if EV_USE_MONOTONIC
717	if (expect_true (have_monotonic))	930	if (expect_true (have_monotonic))
718	{	931	{
719	if (time_update_monotonic ())	932	if (time_update_monotonic (EV_A))
720	{	933	{
721	ev_tstamp odiff = diff;	934	ev_tstamp odiff = rtmn_diff;
722		935
723	for (i = 4; --i; ) /* loop a few times, before making important decisions */	936	for (i = 4; --i; ) /* loop a few times, before making important decisions */
724	{	937	{
725	diff = ev_now - now;	938	rtmn_diff = rt_now - mn_now;
726		939
727	if (fabs (odiff - diff) < MIN_TIMEJUMP)	940	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
728	return; /* all is well */	941	return; /* all is well */
729		942
730	ev_now = ev_time ();	943	rt_now = ev_time ();
731	now = get_clock ();	944	mn_now = get_clock ();
732	now_floor = now;	945	now_floor = mn_now;
733	}	946	}
734		947
735	periodics_reschedule (diff - odiff);	948	periodics_reschedule (EV_A);
736	/* no timer adjustment, as the monotonic clock doesn't jump */	949	/* no timer adjustment, as the monotonic clock doesn't jump */
		950	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
737	}	951	}
738	}	952	}
739	else	953	else
740	#endif	954	#endif
741	{	955	{
742	ev_now = ev_time ();	956	rt_now = ev_time ();
743		957
744	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	958	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
745	{	959	{
746	periodics_reschedule (ev_now - now);	960	periodics_reschedule (EV_A);
747		961
748	/* adjust timers. this is easy, as the offset is the same for all */	962	/* adjust timers. this is easy, as the offset is the same for all */
749	for (i = 0; i < timercnt; ++i)	963	for (i = 0; i < timercnt; ++i)
750	timers [i]->at += diff;	964	((WT)timers [i])->at += rt_now - mn_now;
751	}	965	}
752		966
753	now = ev_now;	967	mn_now = rt_now;
754	}	968	}
755	}	969	}
756		970
757	int ev_loop_done;	971	void
		972	ev_ref (EV_P)
		973	{
		974	++activecnt;
		975	}
758		976
		977	void
		978	ev_unref (EV_P)
		979	{
		980	--activecnt;
		981	}
		982
		983	static int loop_done;
		984
		985	void
759	void ev_loop (int flags)	986	ev_loop (EV_P_ int flags)
760	{	987	{
761	double block;	988	double block;
762	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	989	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
763		990
764	do	991	do
765	{	992	{
766	/* queue check watchers (and execute them) */	993	/* queue check watchers (and execute them) */
767	if (expect_false (preparecnt))	994	if (expect_false (preparecnt))
768	{	995	{
769	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	996	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
770	call_pending ();	997	call_pending (EV_A);
771	}	998	}
772		999
773	/* update fd-related kernel structures */	1000	/* update fd-related kernel structures */
774	fd_reify ();	1001	fd_reify (EV_A);
775		1002
776	/* calculate blocking time */	1003	/* calculate blocking time */
777		1004
778	/* we only need this for !monotonic clockor timers, but as we basically	1005	/* we only need this for !monotonic clockor timers, but as we basically
779	always have timers, we just calculate it always */	1006	always have timers, we just calculate it always */
780	#if EV_USE_MONOTONIC	1007	#if EV_USE_MONOTONIC
781	if (expect_true (have_monotonic))	1008	if (expect_true (have_monotonic))
782	time_update_monotonic ();	1009	time_update_monotonic (EV_A);
783	else	1010	else
784	#endif	1011	#endif
785	{	1012	{
786	ev_now = ev_time ();	1013	rt_now = ev_time ();
787	now = ev_now;	1014	mn_now = rt_now;
788	}	1015	}
789		1016
790	if (flags & EVLOOP_NONBLOCK || idlecnt)	1017	if (flags & EVLOOP_NONBLOCK || idlecnt)
791	block = 0.;	1018	block = 0.;
792	else	1019	else
793	{	1020	{
794	block = MAX_BLOCKTIME;	1021	block = MAX_BLOCKTIME;
795		1022
796	if (timercnt)	1023	if (timercnt)
797	{	1024	{
798	ev_tstamp to = timers [0]->at - now + method_fudge;	1025	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
799	if (block > to) block = to;	1026	if (block > to) block = to;
800	}	1027	}
801		1028
802	if (periodiccnt)	1029	if (periodiccnt)
803	{	1030	{
804	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1031	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
805	if (block > to) block = to;	1032	if (block > to) block = to;
806	}	1033	}
807		1034
808	if (block < 0.) block = 0.;	1035	if (block < 0.) block = 0.;
809	}	1036	}
810		1037
811	method_poll (block);	1038	method_poll (EV_A_ block);
812		1039
813	/* update ev_now, do magic */	1040	/* update rt_now, do magic */
814	time_update ();	1041	time_update (EV_A);
815		1042
816	/* queue pending timers and reschedule them */	1043	/* queue pending timers and reschedule them */
817	timers_reify (); /* relative timers called last */	1044	timers_reify (EV_A); /* relative timers called last */
818	periodics_reify (); /* absolute timers called first */	1045	periodics_reify (EV_A); /* absolute timers called first */
819		1046
820	/* queue idle watchers unless io or timers are pending */	1047	/* queue idle watchers unless io or timers are pending */
821	if (!pendingcnt)	1048	if (!pendingcnt)
822	queue_events ((W *)idles, idlecnt, EV_IDLE);	1049	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
823		1050
824	/* queue check watchers, to be executed first */	1051	/* queue check watchers, to be executed first */
825	if (checkcnt)	1052	if (checkcnt)
826	queue_events ((W *)checks, checkcnt, EV_CHECK);	1053	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
827		1054
828	call_pending ();	1055	call_pending (EV_A);
829	}	1056	}
830	while (!ev_loop_done);	1057	while (activecnt && !loop_done);
831		1058
832	if (ev_loop_done != 2)	1059	if (loop_done != 2)
833	ev_loop_done = 0;	1060	loop_done = 0;
		1061	}
		1062
		1063	void
		1064	ev_unloop (EV_P_ int how)
		1065	{
		1066	loop_done = how;
834	}	1067	}
835		1068
836	/*****************************************************************************/	1069	/*****************************************************************************/
837		1070
838	static void	1071	inline void
839	wlist_add (WL *head, WL elem)	1072	wlist_add (WL *head, WL elem)
840	{	1073	{
841	elem->next = *head;	1074	elem->next = *head;
842	*head = elem;	1075	*head = elem;
843	}	1076	}
844		1077
845	static void	1078	inline void
846	wlist_del (WL *head, WL elem)	1079	wlist_del (WL *head, WL elem)
847	{	1080	{
848	while (*head)	1081	while (*head)
849	{	1082	{
850	if (*head == elem)	1083	if (*head == elem)
…		…
855		1088
856	head = &(*head)->next;	1089	head = &(*head)->next;
857	}	1090	}
858	}	1091	}
859		1092
860	static void	1093	inline void
861	ev_clear_pending (W w)	1094	ev_clear_pending (EV_P_ W w)
862	{	1095	{
863	if (w->pending)	1096	if (w->pending)
864	{	1097	{
865	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1098	pendings [ABSPRI (w)][w->pending - 1].w = 0;
866	w->pending = 0;	1099	w->pending = 0;
867	}	1100	}
868	}	1101	}
869		1102
870	static void	1103	inline void
871	ev_start (W w, int active)	1104	ev_start (EV_P_ W w, int active)
872	{	1105	{
873	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1106	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
874	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1107	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
875		1108
876	w->active = active;	1109	w->active = active;
		1110	ev_ref (EV_A);
877	}	1111	}
878		1112
879	static void	1113	inline void
880	ev_stop (W w)	1114	ev_stop (EV_P_ W w)
881	{	1115	{
		1116	ev_unref (EV_A);
882	w->active = 0;	1117	w->active = 0;
883	}	1118	}
884		1119
885	/*****************************************************************************/	1120	/*****************************************************************************/
886		1121
887	void	1122	void
888	ev_io_start (struct ev_io *w)	1123	ev_io_start (EV_P_ struct ev_io *w)
889	{	1124	{
890	int fd = w->fd;	1125	int fd = w->fd;
891		1126
892	if (ev_is_active (w))	1127	if (ev_is_active (w))
893	return;	1128	return;
894		1129
895	assert (("ev_io_start called with negative fd", fd >= 0));	1130	assert (("ev_io_start called with negative fd", fd >= 0));
896		1131
897	ev_start ((W)w, 1);	1132	ev_start (EV_A_ (W)w, 1);
898	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1133	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
899	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1134	wlist_add ((WL *)&anfds[fd].head, (WL)w);
900		1135
901	fd_change (fd);	1136	fd_change (EV_A_ fd);
902	}	1137	}
903		1138
904	void	1139	void
905	ev_io_stop (struct ev_io *w)	1140	ev_io_stop (EV_P_ struct ev_io *w)
906	{	1141	{
907	ev_clear_pending ((W)w);	1142	ev_clear_pending (EV_A_ (W)w);
908	if (!ev_is_active (w))	1143	if (!ev_is_active (w))
909	return;	1144	return;
910		1145
911	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1146	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
912	ev_stop ((W)w);	1147	ev_stop (EV_A_ (W)w);
913		1148
914	fd_change (w->fd);	1149	fd_change (EV_A_ w->fd);
915	}	1150	}
916		1151
917	void	1152	void
918	ev_timer_start (struct ev_timer *w)	1153	ev_timer_start (EV_P_ struct ev_timer *w)
919	{	1154	{
920	if (ev_is_active (w))	1155	if (ev_is_active (w))
921	return;	1156	return;
922		1157
923	w->at += now;	1158	((WT)w)->at += mn_now;
924		1159
925	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1160	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
926		1161
927	ev_start ((W)w, ++timercnt);	1162	ev_start (EV_A_ (W)w, ++timercnt);
928	array_needsize (timers, timermax, timercnt, );	1163	array_needsize (timers, timermax, timercnt, );
929	timers [timercnt - 1] = w;	1164	timers [timercnt - 1] = w;
930	upheap ((WT *)timers, timercnt - 1);	1165	upheap ((WT *)timers, timercnt - 1);
931	}
932		1166
		1167	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1168	}
		1169
933	void	1170	void
934	ev_timer_stop (struct ev_timer *w)	1171	ev_timer_stop (EV_P_ struct ev_timer *w)
935	{	1172	{
936	ev_clear_pending ((W)w);	1173	ev_clear_pending (EV_A_ (W)w);
937	if (!ev_is_active (w))	1174	if (!ev_is_active (w))
938	return;	1175	return;
939		1176
		1177	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1178
940	if (w->active < timercnt--)	1179	if (((W)w)->active < timercnt--)
941	{	1180	{
942	timers [w->active - 1] = timers [timercnt];	1181	timers [((W)w)->active - 1] = timers [timercnt];
943	downheap ((WT *)timers, timercnt, w->active - 1);	1182	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
944	}	1183	}
945		1184
946	w->at = w->repeat;	1185	((WT)w)->at = w->repeat;
947		1186
948	ev_stop ((W)w);	1187	ev_stop (EV_A_ (W)w);
949	}	1188	}
950		1189
951	void	1190	void
952	ev_timer_again (struct ev_timer *w)	1191	ev_timer_again (EV_P_ struct ev_timer *w)
953	{	1192	{
954	if (ev_is_active (w))	1193	if (ev_is_active (w))
955	{	1194	{
956	if (w->repeat)	1195	if (w->repeat)
957	{	1196	{
958	w->at = now + w->repeat;	1197	((WT)w)->at = mn_now + w->repeat;
959	downheap ((WT *)timers, timercnt, w->active - 1);	1198	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
960	}	1199	}
961	else	1200	else
962	ev_timer_stop (w);	1201	ev_timer_stop (EV_A_ w);
963	}	1202	}
964	else if (w->repeat)	1203	else if (w->repeat)
965	ev_timer_start (w);	1204	ev_timer_start (EV_A_ w);
966	}	1205	}
967		1206
968	void	1207	void
969	ev_periodic_start (struct ev_periodic *w)	1208	ev_periodic_start (EV_P_ struct ev_periodic *w)
970	{	1209	{
971	if (ev_is_active (w))	1210	if (ev_is_active (w))
972	return;	1211	return;
973		1212
974	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1213	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
975		1214
976	/* this formula differs from the one in periodic_reify because we do not always round up */	1215	/* this formula differs from the one in periodic_reify because we do not always round up */
977	if (w->interval)	1216	if (w->interval)
978	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1217	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
979		1218
980	ev_start ((W)w, ++periodiccnt);	1219	ev_start (EV_A_ (W)w, ++periodiccnt);
981	array_needsize (periodics, periodicmax, periodiccnt, );	1220	array_needsize (periodics, periodicmax, periodiccnt, );
982	periodics [periodiccnt - 1] = w;	1221	periodics [periodiccnt - 1] = w;
983	upheap ((WT *)periodics, periodiccnt - 1);	1222	upheap ((WT *)periodics, periodiccnt - 1);
984	}
985		1223
		1224	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1225	}
		1226
986	void	1227	void
987	ev_periodic_stop (struct ev_periodic *w)	1228	ev_periodic_stop (EV_P_ struct ev_periodic *w)
988	{	1229	{
989	ev_clear_pending ((W)w);	1230	ev_clear_pending (EV_A_ (W)w);
990	if (!ev_is_active (w))	1231	if (!ev_is_active (w))
991	return;	1232	return;
992		1233
		1234	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1235
993	if (w->active < periodiccnt--)	1236	if (((W)w)->active < periodiccnt--)
994	{	1237	{
995	periodics [w->active - 1] = periodics [periodiccnt];	1238	periodics [((W)w)->active - 1] = periodics [periodiccnt];
996	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1239	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
997	}	1240	}
998		1241
999	ev_stop ((W)w);	1242	ev_stop (EV_A_ (W)w);
1000	}	1243	}
1001		1244
1002	void	1245	void
1003	ev_signal_start (struct ev_signal *w)	1246	ev_idle_start (EV_P_ struct ev_idle *w)
1004	{	1247	{
1005	if (ev_is_active (w))	1248	if (ev_is_active (w))
1006	return;	1249	return;
1007		1250
		1251	ev_start (EV_A_ (W)w, ++idlecnt);
		1252	array_needsize (idles, idlemax, idlecnt, );
		1253	idles [idlecnt - 1] = w;
		1254	}
		1255
		1256	void
		1257	ev_idle_stop (EV_P_ struct ev_idle *w)
		1258	{
		1259	ev_clear_pending (EV_A_ (W)w);
		1260	if (ev_is_active (w))
		1261	return;
		1262
		1263	idles [((W)w)->active - 1] = idles [--idlecnt];
		1264	ev_stop (EV_A_ (W)w);
		1265	}
		1266
		1267	void
		1268	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1269	{
		1270	if (ev_is_active (w))
		1271	return;
		1272
		1273	ev_start (EV_A_ (W)w, ++preparecnt);
		1274	array_needsize (prepares, preparemax, preparecnt, );
		1275	prepares [preparecnt - 1] = w;
		1276	}
		1277
		1278	void
		1279	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1280	{
		1281	ev_clear_pending (EV_A_ (W)w);
		1282	if (ev_is_active (w))
		1283	return;
		1284
		1285	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1286	ev_stop (EV_A_ (W)w);
		1287	}
		1288
		1289	void
		1290	ev_check_start (EV_P_ struct ev_check *w)
		1291	{
		1292	if (ev_is_active (w))
		1293	return;
		1294
		1295	ev_start (EV_A_ (W)w, ++checkcnt);
		1296	array_needsize (checks, checkmax, checkcnt, );
		1297	checks [checkcnt - 1] = w;
		1298	}
		1299
		1300	void
		1301	ev_check_stop (EV_P_ struct ev_check *w)
		1302	{
		1303	ev_clear_pending (EV_A_ (W)w);
		1304	if (ev_is_active (w))
		1305	return;
		1306
		1307	checks [((W)w)->active - 1] = checks [--checkcnt];
		1308	ev_stop (EV_A_ (W)w);
		1309	}
		1310
		1311	#ifndef SA_RESTART
		1312	# define SA_RESTART 0
		1313	#endif
		1314
		1315	void
		1316	ev_signal_start (EV_P_ struct ev_signal *w)
		1317	{
		1318	#if EV_MULTIPLICITY
		1319	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1320	#endif
		1321	if (ev_is_active (w))
		1322	return;
		1323
1008	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1324	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1009		1325
1010	ev_start ((W)w, 1);	1326	ev_start (EV_A_ (W)w, 1);
1011	array_needsize (signals, signalmax, w->signum, signals_init);	1327	array_needsize (signals, signalmax, w->signum, signals_init);
1012	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1328	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1013		1329
1014	if (!w->next)	1330	if (!((WL)w)->next)
1015	{	1331	{
		1332	#if WIN32
		1333	signal (w->signum, sighandler);
		1334	#else
1016	struct sigaction sa;	1335	struct sigaction sa;
1017	sa.sa_handler = sighandler;	1336	sa.sa_handler = sighandler;
1018	sigfillset (&sa.sa_mask);	1337	sigfillset (&sa.sa_mask);
1019	sa.sa_flags = 0;	1338	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1020	sigaction (w->signum, &sa, 0);	1339	sigaction (w->signum, &sa, 0);
		1340	#endif
1021	}	1341	}
1022	}	1342	}
1023		1343
1024	void	1344	void
1025	ev_signal_stop (struct ev_signal *w)	1345	ev_signal_stop (EV_P_ struct ev_signal *w)
1026	{	1346	{
1027	ev_clear_pending ((W)w);	1347	ev_clear_pending (EV_A_ (W)w);
1028	if (!ev_is_active (w))	1348	if (!ev_is_active (w))
1029	return;	1349	return;
1030		1350
1031	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1351	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1032	ev_stop ((W)w);	1352	ev_stop (EV_A_ (W)w);
1033		1353
1034	if (!signals [w->signum - 1].head)	1354	if (!signals [w->signum - 1].head)
1035	signal (w->signum, SIG_DFL);	1355	signal (w->signum, SIG_DFL);
1036	}	1356	}
1037		1357
1038	void	1358	void
1039	ev_idle_start (struct ev_idle *w)	1359	ev_child_start (EV_P_ struct ev_child *w)
1040	{	1360	{
		1361	#if EV_MULTIPLICITY
		1362	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1363	#endif
1041	if (ev_is_active (w))	1364	if (ev_is_active (w))
1042	return;	1365	return;
1043		1366
1044	ev_start ((W)w, ++idlecnt);	1367	ev_start (EV_A_ (W)w, 1);
1045	array_needsize (idles, idlemax, idlecnt, );	1368	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1046	idles [idlecnt - 1] = w;
1047	}	1369	}
1048		1370
1049	void	1371	void
1050	ev_idle_stop (struct ev_idle *w)	1372	ev_child_stop (EV_P_ struct ev_child *w)
1051	{	1373	{
1052	ev_clear_pending ((W)w);	1374	ev_clear_pending (EV_A_ (W)w);
1053	if (ev_is_active (w))	1375	if (ev_is_active (w))
1054	return;	1376	return;
1055		1377
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);	1378	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1122	ev_stop ((W)w);	1379	ev_stop (EV_A_ (W)w);
1123	}	1380	}
1124		1381
1125	/*****************************************************************************/	1382	/*****************************************************************************/
1126		1383
1127	struct ev_once	1384	struct ev_once
…		…
1131	void (*cb)(int revents, void *arg);	1388	void (*cb)(int revents, void *arg);
1132	void *arg;	1389	void *arg;
1133	};	1390	};
1134		1391
1135	static void	1392	static void
1136	once_cb (struct ev_once *once, int revents)	1393	once_cb (EV_P_ struct ev_once *once, int revents)
1137	{	1394	{
1138	void (*cb)(int revents, void *arg) = once->cb;	1395	void (*cb)(int revents, void *arg) = once->cb;
1139	void *arg = once->arg;	1396	void *arg = once->arg;
1140		1397
1141	ev_io_stop (&once->io);	1398	ev_io_stop (EV_A_ &once->io);
1142	ev_timer_stop (&once->to);	1399	ev_timer_stop (EV_A_ &once->to);
1143	free (once);	1400	free (once);
1144		1401
1145	cb (revents, arg);	1402	cb (revents, arg);
1146	}	1403	}
1147		1404
1148	static void	1405	static void
1149	once_cb_io (struct ev_io *w, int revents)	1406	once_cb_io (EV_P_ struct ev_io *w, int revents)
1150	{	1407	{
1151	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1408	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1152	}	1409	}
1153		1410
1154	static void	1411	static void
1155	once_cb_to (struct ev_timer *w, int revents)	1412	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1156	{	1413	{
1157	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1414	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1158	}	1415	}
1159		1416
1160	void	1417	void
1161	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1418	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1162	{	1419	{
1163	struct ev_once *once = malloc (sizeof (struct ev_once));	1420	struct ev_once *once = malloc (sizeof (struct ev_once));
1164		1421
1165	if (!once)	1422	if (!once)
1166	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1423	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
…		…
1171		1428
1172	ev_watcher_init (&once->io, once_cb_io);	1429	ev_watcher_init (&once->io, once_cb_io);
1173	if (fd >= 0)	1430	if (fd >= 0)
1174	{	1431	{
1175	ev_io_set (&once->io, fd, events);	1432	ev_io_set (&once->io, fd, events);
1176	ev_io_start (&once->io);	1433	ev_io_start (EV_A_ &once->io);
1177	}	1434	}
1178		1435
1179	ev_watcher_init (&once->to, once_cb_to);	1436	ev_watcher_init (&once->to, once_cb_to);
1180	if (timeout >= 0.)	1437	if (timeout >= 0.)
1181	{	1438	{
1182	ev_timer_set (&once->to, timeout, 0.);	1439	ev_timer_set (&once->to, timeout, 0.);
1183	ev_timer_start (&once->to);	1440	ev_timer_start (EV_A_ &once->to);
1184	}	1441	}
1185	}	1442	}
1186	}	1443	}
1187		1444
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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