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Comparing libev/ev.c (file contents):
Revision 1.41 by root, Fri Nov 2 16:54:34 2007 UTC vs.
Revision 1.70 by root, Tue Nov 6 00:52:32 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
…		…
62	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	86	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
63	#endif	87	#endif
64		88
65	#ifndef EV_USE_EPOLL	89	#ifndef EV_USE_EPOLL
66	# define EV_USE_EPOLL 0	90	# define EV_USE_EPOLL 0
		91	#endif
		92
		93	#ifndef EV_USE_KQUEUE
		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
67	#endif	103	#endif
68		104
69	#ifndef EV_USE_REALTIME	105	#ifndef EV_USE_REALTIME
70	# define EV_USE_REALTIME 1	106	# define EV_USE_REALTIME 1
71	#endif	107	#endif
…		…
100	#endif	136	#endif
101		137
102	#define expect_false(expr) expect ((expr) != 0, 0)	138	#define expect_false(expr) expect ((expr) != 0, 0)
103	#define expect_true(expr) expect ((expr) != 0, 1)	139	#define expect_true(expr) expect ((expr) != 0, 1)
104		140
		141	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		142	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
		143
105	typedef struct ev_watcher *W;	144	typedef struct ev_watcher *W;
106	typedef struct ev_watcher_list *WL;	145	typedef struct ev_watcher_list *WL;
107	typedef struct ev_watcher_time *WT;	146	typedef struct ev_watcher_time *WT;
108		147
109	static ev_tstamp now_floor, now, diff; /* monotonic clock */	148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
110	ev_tstamp ev_now;
111	int ev_method;
112		149
113	static int have_monotonic; /* runtime */	150	#if WIN32
114		151	/* note: the comment below could not be substantiated, but what would I care */
115	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	152	/* MSDN says this is required to handle SIGFPE */
116	static void (*method_modify)(int fd, int oev, int nev);	153	volatile double SIGFPE_REQ = 0.0f;
117	static void (*method_poll)(ev_tstamp timeout);	154	#endif
118		155
119	/*****************************************************************************/	156	/*****************************************************************************/
120		157
121	ev_tstamp	158	static void (*syserr_cb)(const char *msg);
		159
		160	void ev_set_syserr_cb (void (*cb)(const char *msg))
		161	{
		162	syserr_cb = cb;
		163	}
		164
		165	static void
		166	syserr (const char *msg)
		167	{
		168	if (!msg)
		169	msg = "(libev) system error";
		170
		171	if (syserr_cb)
		172	syserr_cb (msg);
		173	else
		174	{
		175	perror (msg);
		176	abort ();
		177	}
		178	}
		179
		180	static void *(*alloc)(void *ptr, long size);
		181
		182	void ev_set_allocator (void *(*cb)(void *ptr, long size))
		183	{
		184	alloc = cb;
		185	}
		186
		187	static void *
		188	ev_realloc (void *ptr, long size)
		189	{
		190	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		191
		192	if (!ptr && size)
		193	{
		194	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		195	abort ();
		196	}
		197
		198	return ptr;
		199	}
		200
		201	#define ev_malloc(size) ev_realloc (0, (size))
		202	#define ev_free(ptr) ev_realloc ((ptr), 0)
		203
		204	/*****************************************************************************/
		205
		206	typedef struct
		207	{
		208	WL head;
		209	unsigned char events;
		210	unsigned char reify;
		211	} ANFD;
		212
		213	typedef struct
		214	{
		215	W w;
		216	int events;
		217	} ANPENDING;
		218
		219	#if EV_MULTIPLICITY
		220
		221	struct ev_loop
		222	{
		223	# define VAR(name,decl) decl;
		224	# include "ev_vars.h"
		225	};
		226	# undef VAR
		227	# include "ev_wrap.h"
		228
		229	#else
		230
		231	# define VAR(name,decl) static decl;
		232	# include "ev_vars.h"
		233	# undef VAR
		234
		235	#endif
		236
		237	/*****************************************************************************/
		238
		239	inline ev_tstamp
122	ev_time (void)	240	ev_time (void)
123	{	241	{
124	#if EV_USE_REALTIME	242	#if EV_USE_REALTIME
125	struct timespec ts;	243	struct timespec ts;
126	clock_gettime (CLOCK_REALTIME, &ts);	244	clock_gettime (CLOCK_REALTIME, &ts);
…		…
130	gettimeofday (&tv, 0);	248	gettimeofday (&tv, 0);
131	return tv.tv_sec + tv.tv_usec * 1e-6;	249	return tv.tv_sec + tv.tv_usec * 1e-6;
132	#endif	250	#endif
133	}	251	}
134		252
135	static ev_tstamp	253	inline ev_tstamp
136	get_clock (void)	254	get_clock (void)
137	{	255	{
138	#if EV_USE_MONOTONIC	256	#if EV_USE_MONOTONIC
139	if (expect_true (have_monotonic))	257	if (expect_true (have_monotonic))
140	{	258	{
…		…
145	#endif	263	#endif
146		264
147	return ev_time ();	265	return ev_time ();
148	}	266	}
149		267
		268	ev_tstamp
		269	ev_now (EV_P)
		270	{
		271	return rt_now;
		272	}
		273
150	#define array_roundsize(base,n) ((n) | 4 & ~3)	274	#define array_roundsize(base,n) ((n) | 4 & ~3)
151		275
152	#define array_needsize(base,cur,cnt,init) \	276	#define array_needsize(base,cur,cnt,init) \
153	if (expect_false ((cnt) > cur)) \	277	if (expect_false ((cnt) > cur)) \
154	{ \	278	{ \
155	int newcnt = cur; \	279	int newcnt = cur; \
156	do \	280	do \
157	{ \	281	{ \
158	newcnt = array_roundsize (base, newcnt << 1); \	282	newcnt = array_roundsize (base, newcnt << 1); \
159	} \	283	} \
160	while ((cnt) > newcnt); \	284	while ((cnt) > newcnt); \
161	\	285	\
162	base = realloc (base, sizeof (*base) * (newcnt)); \	286	base = ev_realloc (base, sizeof (*base) * (newcnt)); \
163	init (base + cur, newcnt - cur); \	287	init (base + cur, newcnt - cur); \
164	cur = newcnt; \	288	cur = newcnt; \
165	}	289	}
		290
		291	#define array_slim(stem) \
		292	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		293	{ \
		294	stem ## max = array_roundsize (stem ## cnt >> 1); \
		295	base = ev_realloc (base, sizeof (*base) * (stem ## max)); \
		296	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		297	}
		298
		299	#define array_free(stem, idx) \
		300	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
166		301
167	/*****************************************************************************/	302	/*****************************************************************************/
168
169	typedef struct
170	{
171	struct ev_io *head;
172	unsigned char events;
173	unsigned char reify;
174	} ANFD;
175
176	static ANFD *anfds;
177	static int anfdmax;
178		303
179	static void	304	static void
180	anfds_init (ANFD *base, int count)	305	anfds_init (ANFD *base, int count)
181	{	306	{
182	while (count--)	307	while (count--)
…		…
187		312
188	++base;	313	++base;
189	}	314	}
190	}	315	}
191		316
192	typedef struct
193	{
194	W w;
195	int events;
196	} ANPENDING;
197
198	static ANPENDING *pendings;
199	static int pendingmax, pendingcnt;
200
201	static void	317	static void
202	event (W w, int events)	318	event (EV_P_ W w, int events)
203	{	319	{
204	if (w->pending)	320	if (w->pending)
205	{	321	{
206	pendings [w->pending - 1].events |= events;	322	pendings [ABSPRI (w)][w->pending - 1].events |= events;
207	return;	323	return;
208	}	324	}
209		325
210	w->pending = ++pendingcnt;	326	w->pending = ++pendingcnt [ABSPRI (w)];
211	array_needsize (pendings, pendingmax, pendingcnt, );	327	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
212	pendings [pendingcnt - 1].w = w;	328	pendings [ABSPRI (w)][w->pending - 1].w = w;
213	pendings [pendingcnt - 1].events = events;	329	pendings [ABSPRI (w)][w->pending - 1].events = events;
214	}	330	}
215		331
216	static void	332	static void
217	queue_events (W *events, int eventcnt, int type)	333	queue_events (EV_P_ W *events, int eventcnt, int type)
218	{	334	{
219	int i;	335	int i;
220		336
221	for (i = 0; i < eventcnt; ++i)	337	for (i = 0; i < eventcnt; ++i)
222	event (events [i], type);	338	event (EV_A_ events [i], type);
223	}	339	}
224		340
225	static void	341	static void
226	fd_event (int fd, int events)	342	fd_event (EV_P_ int fd, int events)
227	{	343	{
228	ANFD *anfd = anfds + fd;	344	ANFD *anfd = anfds + fd;
229	struct ev_io *w;	345	struct ev_io *w;
230		346
231	for (w = anfd->head; w; w = w->next)	347	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
232	{	348	{
233	int ev = w->events & events;	349	int ev = w->events & events;
234		350
235	if (ev)	351	if (ev)
236	event ((W)w, ev);	352	event (EV_A_ (W)w, ev);
237	}	353	}
238	}	354	}
239		355
240	/*****************************************************************************/	356	/*****************************************************************************/
241		357
242	static int *fdchanges;
243	static int fdchangemax, fdchangecnt;
244
245	static void	358	static void
246	fd_reify (void)	359	fd_reify (EV_P)
247	{	360	{
248	int i;	361	int i;
249		362
250	for (i = 0; i < fdchangecnt; ++i)	363	for (i = 0; i < fdchangecnt; ++i)
251	{	364	{
…		…
253	ANFD *anfd = anfds + fd;	366	ANFD *anfd = anfds + fd;
254	struct ev_io *w;	367	struct ev_io *w;
255		368
256	int events = 0;	369	int events = 0;
257		370
258	for (w = anfd->head; w; w = w->next)	371	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
259	events |= w->events;	372	events |= w->events;
260		373
261	anfd->reify = 0;	374	anfd->reify = 0;
262		375
263	if (anfd->events != events)
264	{
265	method_modify (fd, anfd->events, events);	376	method_modify (EV_A_ fd, anfd->events, events);
266	anfd->events = events;	377	anfd->events = events;
267	}
268	}	378	}
269		379
270	fdchangecnt = 0;	380	fdchangecnt = 0;
271	}	381	}
272		382
273	static void	383	static void
274	fd_change (int fd)	384	fd_change (EV_P_ int fd)
275	{	385	{
276	if (anfds [fd].reify || fdchangecnt < 0)	386	if (anfds [fd].reify)
277	return;	387	return;
278		388
279	anfds [fd].reify = 1;	389	anfds [fd].reify = 1;
280		390
281	++fdchangecnt;	391	++fdchangecnt;
282	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	392	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
283	fdchanges [fdchangecnt - 1] = fd;	393	fdchanges [fdchangecnt - 1] = fd;
284	}	394	}
285		395
286	static void	396	static void
287	fd_kill (int fd)	397	fd_kill (EV_P_ int fd)
288	{	398	{
289	struct ev_io *w;	399	struct ev_io *w;
290		400
291	printf ("killing fd %d\n", fd);//D
292	while ((w = anfds [fd].head))	401	while ((w = (struct ev_io *)anfds [fd].head))
293	{	402	{
294	ev_io_stop (w);	403	ev_io_stop (EV_A_ w);
295	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	404	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
296	}	405	}
297	}	406	}
298		407
299	/* called on EBADF to verify fds */	408	/* called on EBADF to verify fds */
300	static void	409	static void
301	fd_ebadf (void)	410	fd_ebadf (EV_P)
302	{	411	{
303	int fd;	412	int fd;
304		413
305	for (fd = 0; fd < anfdmax; ++fd)	414	for (fd = 0; fd < anfdmax; ++fd)
306	if (anfds [fd].events)	415	if (anfds [fd].events)
307	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	416	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
308	fd_kill (fd);	417	fd_kill (EV_A_ fd);
309	}	418	}
310		419
311	/* called on ENOMEM in select/poll to kill some fds and retry */	420	/* called on ENOMEM in select/poll to kill some fds and retry */
312	static void	421	static void
313	fd_enomem (void)	422	fd_enomem (EV_P)
314	{	423	{
315	int fd = anfdmax;	424	int fd;
316		425
317	while (fd--)	426	for (fd = anfdmax; fd--; )
318	if (anfds [fd].events)	427	if (anfds [fd].events)
319	{	428	{
320	close (fd);
321	fd_kill (fd);	429	fd_kill (EV_A_ fd);
322	return;	430	return;
323	}	431	}
324	}	432	}
325		433
		434	/* usually called after fork if method needs to re-arm all fds from scratch */
		435	static void
		436	fd_rearm_all (EV_P)
		437	{
		438	int fd;
		439
		440	/* this should be highly optimised to not do anything but set a flag */
		441	for (fd = 0; fd < anfdmax; ++fd)
		442	if (anfds [fd].events)
		443	{
		444	anfds [fd].events = 0;
		445	fd_change (EV_A_ fd);
		446	}
		447	}
		448
326	/*****************************************************************************/	449	/*****************************************************************************/
327		450
328	static struct ev_timer **timers;
329	static int timermax, timercnt;
330
331	static struct ev_periodic **periodics;
332	static int periodicmax, periodiccnt;
333
334	static void	451	static void
335	upheap (WT *timers, int k)	452	upheap (WT *heap, int k)
336	{	453	{
337	WT w = timers [k];	454	WT w = heap [k];
338		455
339	while (k && timers [k >> 1]->at > w->at)	456	while (k && heap [k >> 1]->at > w->at)
340	{	457	{
341	timers [k] = timers [k >> 1];	458	heap [k] = heap [k >> 1];
342	timers [k]->active = k + 1;	459	((W)heap [k])->active = k + 1;
343	k >>= 1;	460	k >>= 1;
344	}	461	}
345		462
346	timers [k] = w;	463	heap [k] = w;
347	timers [k]->active = k + 1;	464	((W)heap [k])->active = k + 1;
348		465
349	}	466	}
350		467
351	static void	468	static void
352	downheap (WT *timers, int N, int k)	469	downheap (WT *heap, int N, int k)
353	{	470	{
354	WT w = timers [k];	471	WT w = heap [k];
355		472
356	while (k < (N >> 1))	473	while (k < (N >> 1))
357	{	474	{
358	int j = k << 1;	475	int j = k << 1;
359		476
360	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	477	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
361	++j;	478	++j;
362		479
363	if (w->at <= timers [j]->at)	480	if (w->at <= heap [j]->at)
364	break;	481	break;
365		482
366	timers [k] = timers [j];	483	heap [k] = heap [j];
367	timers [k]->active = k + 1;	484	((W)heap [k])->active = k + 1;
368	k = j;	485	k = j;
369	}	486	}
370		487
371	timers [k] = w;	488	heap [k] = w;
372	timers [k]->active = k + 1;	489	((W)heap [k])->active = k + 1;
373	}	490	}
374		491
375	/*****************************************************************************/	492	/*****************************************************************************/
376		493
377	typedef struct	494	typedef struct
378	{	495	{
379	struct ev_signal *head;	496	WL head;
380	sig_atomic_t volatile gotsig;	497	sig_atomic_t volatile gotsig;
381	} ANSIG;	498	} ANSIG;
382		499
383	static ANSIG *signals;	500	static ANSIG *signals;
384	static int signalmax;	501	static int signalmax;
…		…
400	}	517	}
401		518
402	static void	519	static void
403	sighandler (int signum)	520	sighandler (int signum)
404	{	521	{
		522	#if WIN32
		523	signal (signum, sighandler);
		524	#endif
		525
405	signals [signum - 1].gotsig = 1;	526	signals [signum - 1].gotsig = 1;
406		527
407	if (!gotsig)	528	if (!gotsig)
408	{	529	{
		530	int old_errno = errno;
409	gotsig = 1;	531	gotsig = 1;
410	write (sigpipe [1], &signum, 1);	532	write (sigpipe [1], &signum, 1);
		533	errno = old_errno;
411	}	534	}
412	}	535	}
413		536
414	static void	537	static void
415	sigcb (struct ev_io *iow, int revents)	538	sigcb (EV_P_ struct ev_io *iow, int revents)
416	{	539	{
417	struct ev_signal *w;	540	WL w;
418	int signum;	541	int signum;
419		542
420	read (sigpipe [0], &revents, 1);	543	read (sigpipe [0], &revents, 1);
421	gotsig = 0;	544	gotsig = 0;
422		545
…		…
424	if (signals [signum].gotsig)	547	if (signals [signum].gotsig)
425	{	548	{
426	signals [signum].gotsig = 0;	549	signals [signum].gotsig = 0;
427		550
428	for (w = signals [signum].head; w; w = w->next)	551	for (w = signals [signum].head; w; w = w->next)
429	event ((W)w, EV_SIGNAL);	552	event (EV_A_ (W)w, EV_SIGNAL);
430	}	553	}
431	}	554	}
432		555
433	static void	556	static void
434	siginit (void)	557	siginit (EV_P)
435	{	558	{
		559	#ifndef WIN32
436	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	560	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
437	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	561	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
438		562
439	/* rather than sort out wether we really need nb, set it */	563	/* rather than sort out wether we really need nb, set it */
440	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	564	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
441	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	565	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		566	#endif
442		567
443	ev_io_set (&sigev, sigpipe [0], EV_READ);	568	ev_io_set (&sigev, sigpipe [0], EV_READ);
444	ev_io_start (&sigev);	569	ev_io_start (EV_A_ &sigev);
		570	ev_unref (EV_A); /* child watcher should not keep loop alive */
445	}	571	}
446		572
447	/*****************************************************************************/	573	/*****************************************************************************/
448		574
449	static struct ev_idle **idles;	575	#ifndef WIN32
450	static int idlemax, idlecnt;
451
452	static struct ev_prepare **prepares;
453	static int preparemax, preparecnt;
454
455	static struct ev_check **checks;
456	static int checkmax, checkcnt;
457
458	/*****************************************************************************/
459		576
460	static struct ev_child *childs [PID_HASHSIZE];	577	static struct ev_child *childs [PID_HASHSIZE];
461	static struct ev_signal childev;	578	static struct ev_signal childev;
462		579
463	#ifndef WCONTINUED	580	#ifndef WCONTINUED
464	# define WCONTINUED 0	581	# define WCONTINUED 0
465	#endif	582	#endif
466		583
467	static void	584	static void
468	childcb (struct ev_signal *sw, int revents)	585	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
469	{	586	{
470	struct ev_child *w;	587	struct ev_child *w;
		588
		589	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		590	if (w->pid == pid || !w->pid)
		591	{
		592	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		593	w->rpid = pid;
		594	w->rstatus = status;
		595	event (EV_A_ (W)w, EV_CHILD);
		596	}
		597	}
		598
		599	static void
		600	childcb (EV_P_ struct ev_signal *sw, int revents)
		601	{
471	int pid, status;	602	int pid, status;
472		603
473	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	604	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
474	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	605	{
475	if (w->pid == pid || !w->pid)	606	/* make sure we are called again until all childs have been reaped */
476	{	607	event (EV_A_ (W)sw, EV_SIGNAL);
477	w->status = status;	608
478	event ((W)w, EV_CHILD);	609	child_reap (EV_A_ sw, pid, pid, status);
479	}	610	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		611	}
480	}	612	}
		613
		614	#endif
481		615
482	/*****************************************************************************/	616	/*****************************************************************************/
483		617
		618	#if EV_USE_KQUEUE
		619	# include "ev_kqueue.c"
		620	#endif
484	#if EV_USE_EPOLL	621	#if EV_USE_EPOLL
485	# include "ev_epoll.c"	622	# include "ev_epoll.c"
486	#endif	623	#endif
487	#if EV_USE_POLL	624	#if EV_USE_POLL
488	# include "ev_poll.c"	625	# include "ev_poll.c"
…		…
501	ev_version_minor (void)	638	ev_version_minor (void)
502	{	639	{
503	return EV_VERSION_MINOR;	640	return EV_VERSION_MINOR;
504	}	641	}
505		642
506	/* return true if we are running with elevated privileges and ignore env variables */	643	/* return true if we are running with elevated privileges and should ignore env variables */
507	static int	644	static int
508	enable_secure ()	645	enable_secure (void)
509	{	646	{
		647	#ifdef WIN32
		648	return 0;
		649	#else
510	return getuid () != geteuid ()	650	return getuid () != geteuid ()
511	|| getgid () != getegid ();	651	|| getgid () != getegid ();
		652	#endif
512	}	653	}
513		654
514	int ev_init (int methods)	655	int
		656	ev_method (EV_P)
515	{	657	{
		658	return method;
		659	}
		660
		661	static void
		662	loop_init (EV_P_ int methods)
		663	{
516	if (!ev_method)	664	if (!method)
517	{	665	{
518	#if EV_USE_MONOTONIC	666	#if EV_USE_MONOTONIC
519	{	667	{
520	struct timespec ts;	668	struct timespec ts;
521	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	669	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
522	have_monotonic = 1;	670	have_monotonic = 1;
523	}	671	}
524	#endif	672	#endif
525		673
526	ev_now = ev_time ();	674	rt_now = ev_time ();
527	now = get_clock ();	675	mn_now = get_clock ();
528	now_floor = now;	676	now_floor = mn_now;
529	diff = ev_now - now;	677	rtmn_diff = rt_now - mn_now;
530
531	if (pipe (sigpipe))
532	return 0;
533		678
534	if (methods == EVMETHOD_AUTO)	679	if (methods == EVMETHOD_AUTO)
535	if (!enable_secure () && getenv ("LIBEV_METHODS"))	680	if (!enable_secure () && getenv ("LIBEV_METHODS"))
536	methods = atoi (getenv ("LIBEV_METHODS"));	681	methods = atoi (getenv ("LIBEV_METHODS"));
537	else	682	else
538	methods = EVMETHOD_ANY;	683	methods = EVMETHOD_ANY;
539		684
540	ev_method = 0;	685	method = 0;
		686	#if EV_USE_WIN32
		687	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		688	#endif
		689	#if EV_USE_KQUEUE
		690	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		691	#endif
541	#if EV_USE_EPOLL	692	#if EV_USE_EPOLL
542	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	693	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
543	#endif	694	#endif
544	#if EV_USE_POLL	695	#if EV_USE_POLL
545	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	696	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
546	#endif	697	#endif
547	#if EV_USE_SELECT	698	#if EV_USE_SELECT
548	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	699	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
549	#endif	700	#endif
550		701
		702	ev_watcher_init (&sigev, sigcb);
		703	ev_set_priority (&sigev, EV_MAXPRI);
		704	}
		705	}
		706
		707	void
		708	loop_destroy (EV_P)
		709	{
		710	int i;
		711
		712	#if EV_USE_WIN32
		713	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		714	#endif
		715	#if EV_USE_KQUEUE
		716	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		717	#endif
		718	#if EV_USE_EPOLL
		719	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		720	#endif
		721	#if EV_USE_POLL
		722	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		723	#endif
		724	#if EV_USE_SELECT
		725	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		726	#endif
		727
		728	for (i = NUMPRI; i--; )
		729	array_free (pending, [i]);
		730
		731	array_free (fdchange, );
		732	array_free (timer, );
		733	array_free (periodic, );
		734	array_free (idle, );
		735	array_free (prepare, );
		736	array_free (check, );
		737
		738	method = 0;
		739	}
		740
		741	static void
		742	loop_fork (EV_P)
		743	{
		744	#if EV_USE_EPOLL
		745	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		746	#endif
		747	#if EV_USE_KQUEUE
		748	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		749	#endif
		750
		751	if (ev_is_active (&sigev))
		752	{
		753	/* default loop */
		754
		755	ev_ref (EV_A);
		756	ev_io_stop (EV_A_ &sigev);
		757	close (sigpipe [0]);
		758	close (sigpipe [1]);
		759
		760	while (pipe (sigpipe))
		761	syserr ("(libev) error creating pipe");
		762
		763	siginit (EV_A);
		764	}
		765
		766	postfork = 0;
		767	}
		768
		769	#if EV_MULTIPLICITY
		770	struct ev_loop *
		771	ev_loop_new (int methods)
		772	{
		773	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		774
		775	memset (loop, 0, sizeof (struct ev_loop));
		776
		777	loop_init (EV_A_ methods);
		778
		779	if (ev_method (EV_A))
		780	return loop;
		781
		782	return 0;
		783	}
		784
		785	void
		786	ev_loop_destroy (EV_P)
		787	{
		788	loop_destroy (EV_A);
		789	ev_free (loop);
		790	}
		791
		792	void
		793	ev_loop_fork (EV_P)
		794	{
		795	postfork = 1;
		796	}
		797
		798	#endif
		799
		800	#if EV_MULTIPLICITY
		801	struct ev_loop default_loop_struct;
		802	static struct ev_loop *default_loop;
		803
		804	struct ev_loop *
		805	#else
		806	static int default_loop;
		807
		808	int
		809	#endif
		810	ev_default_loop (int methods)
		811	{
		812	if (sigpipe [0] == sigpipe [1])
		813	if (pipe (sigpipe))
		814	return 0;
		815
		816	if (!default_loop)
		817	{
		818	#if EV_MULTIPLICITY
		819	struct ev_loop *loop = default_loop = &default_loop_struct;
		820	#else
		821	default_loop = 1;
		822	#endif
		823
		824	loop_init (EV_A_ methods);
		825
551	if (ev_method)	826	if (ev_method (EV_A))
552	{	827	{
553	ev_watcher_init (&sigev, sigcb);
554	siginit ();	828	siginit (EV_A);
555		829
		830	#ifndef WIN32
556	ev_signal_init (&childev, childcb, SIGCHLD);	831	ev_signal_init (&childev, childcb, SIGCHLD);
		832	ev_set_priority (&childev, EV_MAXPRI);
557	ev_signal_start (&childev);	833	ev_signal_start (EV_A_ &childev);
		834	ev_unref (EV_A); /* child watcher should not keep loop alive */
		835	#endif
558	}	836	}
		837	else
		838	default_loop = 0;
559	}	839	}
560		840
561	return ev_method;	841	return default_loop;
		842	}
		843
		844	void
		845	ev_default_destroy (void)
		846	{
		847	#if EV_MULTIPLICITY
		848	struct ev_loop *loop = default_loop;
		849	#endif
		850
		851	ev_ref (EV_A); /* child watcher */
		852	ev_signal_stop (EV_A_ &childev);
		853
		854	ev_ref (EV_A); /* signal watcher */
		855	ev_io_stop (EV_A_ &sigev);
		856
		857	close (sigpipe [0]); sigpipe [0] = 0;
		858	close (sigpipe [1]); sigpipe [1] = 0;
		859
		860	loop_destroy (EV_A);
		861	}
		862
		863	void
		864	ev_default_fork (void)
		865	{
		866	#if EV_MULTIPLICITY
		867	struct ev_loop *loop = default_loop;
		868	#endif
		869
		870	if (method)
		871	postfork = 1;
562	}	872	}
563		873
564	/*****************************************************************************/	874	/*****************************************************************************/
565		875
566	void
567	ev_fork_prepare (void)
568	{
569	/* nop */
570	}
571
572	void
573	ev_fork_parent (void)
574	{
575	/* nop */
576	}
577
578	void
579	ev_fork_child (void)
580	{
581	#if EV_USE_EPOLL
582	if (ev_method == EVMETHOD_EPOLL)
583	epoll_postfork_child ();
584	#endif
585
586	ev_io_stop (&sigev);
587	close (sigpipe [0]);
588	close (sigpipe [1]);
589	pipe (sigpipe);
590	siginit ();
591	}
592
593	/*****************************************************************************/
594
595	static void	876	static void
596	call_pending (void)	877	call_pending (EV_P)
597	{	878	{
		879	int pri;
		880
		881	for (pri = NUMPRI; pri--; )
598	while (pendingcnt)	882	while (pendingcnt [pri])
599	{	883	{
600	ANPENDING *p = pendings + --pendingcnt;	884	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
601		885
602	if (p->w)	886	if (p->w)
603	{	887	{
604	p->w->pending = 0;	888	p->w->pending = 0;
605	p->w->cb (p->w, p->events);	889	p->w->cb (EV_A_ p->w, p->events);
606	}	890	}
607	}	891	}
608	}	892	}
609		893
610	static void	894	static void
611	timers_reify (void)	895	timers_reify (EV_P)
612	{	896	{
613	while (timercnt && timers [0]->at <= now)	897	while (timercnt && ((WT)timers [0])->at <= mn_now)
614	{	898	{
615	struct ev_timer *w = timers [0];	899	struct ev_timer *w = timers [0];
		900
		901	assert (("inactive timer on timer heap detected", ev_is_active (w)));
616		902
617	/* first reschedule or stop timer */	903	/* first reschedule or stop timer */
618	if (w->repeat)	904	if (w->repeat)
619	{	905	{
620	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	906	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
621	w->at = now + w->repeat;	907	((WT)w)->at = mn_now + w->repeat;
622	downheap ((WT *)timers, timercnt, 0);	908	downheap ((WT *)timers, timercnt, 0);
623	}	909	}
624	else	910	else
625	ev_timer_stop (w); /* nonrepeating: stop timer */	911	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
626		912
627	event ((W)w, EV_TIMEOUT);	913	event (EV_A_ (W)w, EV_TIMEOUT);
628	}	914	}
629	}	915	}
630		916
631	static void	917	static void
632	periodics_reify (void)	918	periodics_reify (EV_P)
633	{	919	{
634	while (periodiccnt && periodics [0]->at <= ev_now)	920	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
635	{	921	{
636	struct ev_periodic *w = periodics [0];	922	struct ev_periodic *w = periodics [0];
		923
		924	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
637		925
638	/* first reschedule or stop timer */	926	/* first reschedule or stop timer */
639	if (w->interval)	927	if (w->interval)
640	{	928	{
641	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	929	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
642	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	930	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
643	downheap ((WT *)periodics, periodiccnt, 0);	931	downheap ((WT *)periodics, periodiccnt, 0);
644	}	932	}
645	else	933	else
646	ev_periodic_stop (w); /* nonrepeating: stop timer */	934	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
647		935
648	event ((W)w, EV_PERIODIC);	936	event (EV_A_ (W)w, EV_PERIODIC);
649	}	937	}
650	}	938	}
651		939
652	static void	940	static void
653	periodics_reschedule (ev_tstamp diff)	941	periodics_reschedule (EV_P)
654	{	942	{
655	int i;	943	int i;
656		944
657	/* adjust periodics after time jump */	945	/* adjust periodics after time jump */
658	for (i = 0; i < periodiccnt; ++i)	946	for (i = 0; i < periodiccnt; ++i)
659	{	947	{
660	struct ev_periodic *w = periodics [i];	948	struct ev_periodic *w = periodics [i];
661		949
662	if (w->interval)	950	if (w->interval)
663	{	951	{
664	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	952	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
665		953
666	if (fabs (diff) >= 1e-4)	954	if (fabs (diff) >= 1e-4)
667	{	955	{
668	ev_periodic_stop (w);	956	ev_periodic_stop (EV_A_ w);
669	ev_periodic_start (w);	957	ev_periodic_start (EV_A_ w);
670		958
671	i = 0; /* restart loop, inefficient, but time jumps should be rare */	959	i = 0; /* restart loop, inefficient, but time jumps should be rare */
672	}	960	}
673	}	961	}
674	}	962	}
675	}	963	}
676		964
677	static int	965	inline int
678	time_update_monotonic (void)	966	time_update_monotonic (EV_P)
679	{	967	{
680	now = get_clock ();	968	mn_now = get_clock ();
681		969
682	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	970	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
683	{	971	{
684	ev_now = now + diff;	972	rt_now = rtmn_diff + mn_now;
685	return 0;	973	return 0;
686	}	974	}
687	else	975	else
688	{	976	{
689	now_floor = now;	977	now_floor = mn_now;
690	ev_now = ev_time ();	978	rt_now = ev_time ();
691	return 1;	979	return 1;
692	}	980	}
693	}	981	}
694		982
695	static void	983	static void
696	time_update (void)	984	time_update (EV_P)
697	{	985	{
698	int i;	986	int i;
699		987
700	#if EV_USE_MONOTONIC	988	#if EV_USE_MONOTONIC
701	if (expect_true (have_monotonic))	989	if (expect_true (have_monotonic))
702	{	990	{
703	if (time_update_monotonic ())	991	if (time_update_monotonic (EV_A))
704	{	992	{
705	ev_tstamp odiff = diff;	993	ev_tstamp odiff = rtmn_diff;
706		994
707	for (i = 4; --i; ) /* loop a few times, before making important decisions */	995	for (i = 4; --i; ) /* loop a few times, before making important decisions */
708	{	996	{
709	diff = ev_now - now;	997	rtmn_diff = rt_now - mn_now;
710		998
711	if (fabs (odiff - diff) < MIN_TIMEJUMP)	999	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
712	return; /* all is well */	1000	return; /* all is well */
713		1001
714	ev_now = ev_time ();	1002	rt_now = ev_time ();
715	now = get_clock ();	1003	mn_now = get_clock ();
716	now_floor = now;	1004	now_floor = mn_now;
717	}	1005	}
718		1006
719	periodics_reschedule (diff - odiff);	1007	periodics_reschedule (EV_A);
720	/* no timer adjustment, as the monotonic clock doesn't jump */	1008	/* no timer adjustment, as the monotonic clock doesn't jump */
		1009	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
721	}	1010	}
722	}	1011	}
723	else	1012	else
724	#endif	1013	#endif
725	{	1014	{
726	ev_now = ev_time ();	1015	rt_now = ev_time ();
727		1016
728	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1017	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
729	{	1018	{
730	periodics_reschedule (ev_now - now);	1019	periodics_reschedule (EV_A);
731		1020
732	/* adjust timers. this is easy, as the offset is the same for all */	1021	/* adjust timers. this is easy, as the offset is the same for all */
733	for (i = 0; i < timercnt; ++i)	1022	for (i = 0; i < timercnt; ++i)
734	timers [i]->at += diff;	1023	((WT)timers [i])->at += rt_now - mn_now;
735	}	1024	}
736		1025
737	now = ev_now;	1026	mn_now = rt_now;
738	}	1027	}
739	}	1028	}
740		1029
741	int ev_loop_done;	1030	void
		1031	ev_ref (EV_P)
		1032	{
		1033	++activecnt;
		1034	}
742		1035
		1036	void
		1037	ev_unref (EV_P)
		1038	{
		1039	--activecnt;
		1040	}
		1041
		1042	static int loop_done;
		1043
		1044	void
743	void ev_loop (int flags)	1045	ev_loop (EV_P_ int flags)
744	{	1046	{
745	double block;	1047	double block;
746	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1048	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
747		1049
748	do	1050	do
749	{	1051	{
750	/* queue check watchers (and execute them) */	1052	/* queue check watchers (and execute them) */
751	if (expect_false (preparecnt))	1053	if (expect_false (preparecnt))
752	{	1054	{
753	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1055	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
754	call_pending ();	1056	call_pending (EV_A);
755	}	1057	}
756		1058
		1059	/* we might have forked, so reify kernel state if necessary */
		1060	if (expect_false (postfork))
		1061	loop_fork (EV_A);
		1062
757	/* update fd-related kernel structures */	1063	/* update fd-related kernel structures */
758	fd_reify ();	1064	fd_reify (EV_A);
759		1065
760	/* calculate blocking time */	1066	/* calculate blocking time */
761		1067
762	/* we only need this for !monotonic clockor timers, but as we basically	1068	/* we only need this for !monotonic clockor timers, but as we basically
763	always have timers, we just calculate it always */	1069	always have timers, we just calculate it always */
764	#if EV_USE_MONOTONIC	1070	#if EV_USE_MONOTONIC
765	if (expect_true (have_monotonic))	1071	if (expect_true (have_monotonic))
766	time_update_monotonic ();	1072	time_update_monotonic (EV_A);
767	else	1073	else
768	#endif	1074	#endif
769	{	1075	{
770	ev_now = ev_time ();	1076	rt_now = ev_time ();
771	now = ev_now;	1077	mn_now = rt_now;
772	}	1078	}
773		1079
774	if (flags & EVLOOP_NONBLOCK || idlecnt)	1080	if (flags & EVLOOP_NONBLOCK || idlecnt)
775	block = 0.;	1081	block = 0.;
776	else	1082	else
777	{	1083	{
778	block = MAX_BLOCKTIME;	1084	block = MAX_BLOCKTIME;
779		1085
780	if (timercnt)	1086	if (timercnt)
781	{	1087	{
782	ev_tstamp to = timers [0]->at - now + method_fudge;	1088	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
783	if (block > to) block = to;	1089	if (block > to) block = to;
784	}	1090	}
785		1091
786	if (periodiccnt)	1092	if (periodiccnt)
787	{	1093	{
788	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1094	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
789	if (block > to) block = to;	1095	if (block > to) block = to;
790	}	1096	}
791		1097
792	if (block < 0.) block = 0.;	1098	if (block < 0.) block = 0.;
793	}	1099	}
794		1100
795	method_poll (block);	1101	method_poll (EV_A_ block);
796		1102
797	/* update ev_now, do magic */	1103	/* update rt_now, do magic */
798	time_update ();	1104	time_update (EV_A);
799		1105
800	/* queue pending timers and reschedule them */	1106	/* queue pending timers and reschedule them */
801	timers_reify (); /* relative timers called last */	1107	timers_reify (EV_A); /* relative timers called last */
802	periodics_reify (); /* absolute timers called first */	1108	periodics_reify (EV_A); /* absolute timers called first */
803		1109
804	/* queue idle watchers unless io or timers are pending */	1110	/* queue idle watchers unless io or timers are pending */
805	if (!pendingcnt)	1111	if (!pendingcnt)
806	queue_events ((W *)idles, idlecnt, EV_IDLE);	1112	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
807		1113
808	/* queue check watchers, to be executed first */	1114	/* queue check watchers, to be executed first */
809	if (checkcnt)	1115	if (checkcnt)
810	queue_events ((W *)checks, checkcnt, EV_CHECK);	1116	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
811		1117
812	call_pending ();	1118	call_pending (EV_A);
813	}	1119	}
814	while (!ev_loop_done);	1120	while (activecnt && !loop_done);
815		1121
816	if (ev_loop_done != 2)	1122	if (loop_done != 2)
817	ev_loop_done = 0;	1123	loop_done = 0;
		1124	}
		1125
		1126	void
		1127	ev_unloop (EV_P_ int how)
		1128	{
		1129	loop_done = how;
818	}	1130	}
819		1131
820	/*****************************************************************************/	1132	/*****************************************************************************/
821		1133
822	static void	1134	inline void
823	wlist_add (WL *head, WL elem)	1135	wlist_add (WL *head, WL elem)
824	{	1136	{
825	elem->next = *head;	1137	elem->next = *head;
826	*head = elem;	1138	*head = elem;
827	}	1139	}
828		1140
829	static void	1141	inline void
830	wlist_del (WL *head, WL elem)	1142	wlist_del (WL *head, WL elem)
831	{	1143	{
832	while (*head)	1144	while (*head)
833	{	1145	{
834	if (*head == elem)	1146	if (*head == elem)
…		…
839		1151
840	head = &(*head)->next;	1152	head = &(*head)->next;
841	}	1153	}
842	}	1154	}
843		1155
844	static void	1156	inline void
845	ev_clear_pending (W w)	1157	ev_clear_pending (EV_P_ W w)
846	{	1158	{
847	if (w->pending)	1159	if (w->pending)
848	{	1160	{
849	pendings [w->pending - 1].w = 0;	1161	pendings [ABSPRI (w)][w->pending - 1].w = 0;
850	w->pending = 0;	1162	w->pending = 0;
851	}	1163	}
852	}	1164	}
853		1165
854	static void	1166	inline void
855	ev_start (W w, int active)	1167	ev_start (EV_P_ W w, int active)
856	{	1168	{
		1169	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1170	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1171
857	w->active = active;	1172	w->active = active;
		1173	ev_ref (EV_A);
858	}	1174	}
859		1175
860	static void	1176	inline void
861	ev_stop (W w)	1177	ev_stop (EV_P_ W w)
862	{	1178	{
		1179	ev_unref (EV_A);
863	w->active = 0;	1180	w->active = 0;
864	}	1181	}
865		1182
866	/*****************************************************************************/	1183	/*****************************************************************************/
867		1184
868	void	1185	void
869	ev_io_start (struct ev_io *w)	1186	ev_io_start (EV_P_ struct ev_io *w)
870	{	1187	{
871	int fd = w->fd;	1188	int fd = w->fd;
872		1189
873	if (ev_is_active (w))	1190	if (ev_is_active (w))
874	return;	1191	return;
875		1192
876	assert (("ev_io_start called with negative fd", fd >= 0));	1193	assert (("ev_io_start called with negative fd", fd >= 0));
877		1194
878	ev_start ((W)w, 1);	1195	ev_start (EV_A_ (W)w, 1);
879	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1196	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
880	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1197	wlist_add ((WL *)&anfds[fd].head, (WL)w);
881		1198
882	fd_change (fd);	1199	fd_change (EV_A_ fd);
883	}	1200	}
884		1201
885	void	1202	void
886	ev_io_stop (struct ev_io *w)	1203	ev_io_stop (EV_P_ struct ev_io *w)
887	{	1204	{
888	ev_clear_pending ((W)w);	1205	ev_clear_pending (EV_A_ (W)w);
889	if (!ev_is_active (w))	1206	if (!ev_is_active (w))
890	return;	1207	return;
891		1208
892	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1209	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
893	ev_stop ((W)w);	1210	ev_stop (EV_A_ (W)w);
894		1211
895	fd_change (w->fd);	1212	fd_change (EV_A_ w->fd);
896	}	1213	}
897		1214
898	void	1215	void
899	ev_timer_start (struct ev_timer *w)	1216	ev_timer_start (EV_P_ struct ev_timer *w)
900	{	1217	{
901	if (ev_is_active (w))	1218	if (ev_is_active (w))
902	return;	1219	return;
903		1220
904	w->at += now;	1221	((WT)w)->at += mn_now;
905		1222
906	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1223	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
907		1224
908	ev_start ((W)w, ++timercnt);	1225	ev_start (EV_A_ (W)w, ++timercnt);
909	array_needsize (timers, timermax, timercnt, );	1226	array_needsize (timers, timermax, timercnt, );
910	timers [timercnt - 1] = w;	1227	timers [timercnt - 1] = w;
911	upheap ((WT *)timers, timercnt - 1);	1228	upheap ((WT *)timers, timercnt - 1);
912	}
913		1229
		1230	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1231	}
		1232
914	void	1233	void
915	ev_timer_stop (struct ev_timer *w)	1234	ev_timer_stop (EV_P_ struct ev_timer *w)
916	{	1235	{
917	ev_clear_pending ((W)w);	1236	ev_clear_pending (EV_A_ (W)w);
918	if (!ev_is_active (w))	1237	if (!ev_is_active (w))
919	return;	1238	return;
920		1239
		1240	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1241
921	if (w->active < timercnt--)	1242	if (((W)w)->active < timercnt--)
922	{	1243	{
923	timers [w->active - 1] = timers [timercnt];	1244	timers [((W)w)->active - 1] = timers [timercnt];
924	downheap ((WT *)timers, timercnt, w->active - 1);	1245	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
925	}	1246	}
926		1247
927	w->at = w->repeat;	1248	((WT)w)->at = w->repeat;
928		1249
929	ev_stop ((W)w);	1250	ev_stop (EV_A_ (W)w);
930	}	1251	}
931		1252
932	void	1253	void
933	ev_timer_again (struct ev_timer *w)	1254	ev_timer_again (EV_P_ struct ev_timer *w)
934	{	1255	{
935	if (ev_is_active (w))	1256	if (ev_is_active (w))
936	{	1257	{
937	if (w->repeat)	1258	if (w->repeat)
938	{	1259	{
939	w->at = now + w->repeat;	1260	((WT)w)->at = mn_now + w->repeat;
940	downheap ((WT *)timers, timercnt, w->active - 1);	1261	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
941	}	1262	}
942	else	1263	else
943	ev_timer_stop (w);	1264	ev_timer_stop (EV_A_ w);
944	}	1265	}
945	else if (w->repeat)	1266	else if (w->repeat)
946	ev_timer_start (w);	1267	ev_timer_start (EV_A_ w);
947	}	1268	}
948		1269
949	void	1270	void
950	ev_periodic_start (struct ev_periodic *w)	1271	ev_periodic_start (EV_P_ struct ev_periodic *w)
951	{	1272	{
952	if (ev_is_active (w))	1273	if (ev_is_active (w))
953	return;	1274	return;
954		1275
955	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1276	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
956		1277
957	/* this formula differs from the one in periodic_reify because we do not always round up */	1278	/* this formula differs from the one in periodic_reify because we do not always round up */
958	if (w->interval)	1279	if (w->interval)
959	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1280	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
960		1281
961	ev_start ((W)w, ++periodiccnt);	1282	ev_start (EV_A_ (W)w, ++periodiccnt);
962	array_needsize (periodics, periodicmax, periodiccnt, );	1283	array_needsize (periodics, periodicmax, periodiccnt, );
963	periodics [periodiccnt - 1] = w;	1284	periodics [periodiccnt - 1] = w;
964	upheap ((WT *)periodics, periodiccnt - 1);	1285	upheap ((WT *)periodics, periodiccnt - 1);
965	}
966		1286
		1287	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1288	}
		1289
967	void	1290	void
968	ev_periodic_stop (struct ev_periodic *w)	1291	ev_periodic_stop (EV_P_ struct ev_periodic *w)
969	{	1292	{
970	ev_clear_pending ((W)w);	1293	ev_clear_pending (EV_A_ (W)w);
971	if (!ev_is_active (w))	1294	if (!ev_is_active (w))
972	return;	1295	return;
973		1296
		1297	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1298
974	if (w->active < periodiccnt--)	1299	if (((W)w)->active < periodiccnt--)
975	{	1300	{
976	periodics [w->active - 1] = periodics [periodiccnt];	1301	periodics [((W)w)->active - 1] = periodics [periodiccnt];
977	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1302	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
978	}	1303	}
979		1304
980	ev_stop ((W)w);	1305	ev_stop (EV_A_ (W)w);
981	}	1306	}
982		1307
983	void	1308	void
984	ev_signal_start (struct ev_signal *w)	1309	ev_idle_start (EV_P_ struct ev_idle *w)
985	{	1310	{
986	if (ev_is_active (w))	1311	if (ev_is_active (w))
987	return;	1312	return;
988		1313
		1314	ev_start (EV_A_ (W)w, ++idlecnt);
		1315	array_needsize (idles, idlemax, idlecnt, );
		1316	idles [idlecnt - 1] = w;
		1317	}
		1318
		1319	void
		1320	ev_idle_stop (EV_P_ struct ev_idle *w)
		1321	{
		1322	ev_clear_pending (EV_A_ (W)w);
		1323	if (ev_is_active (w))
		1324	return;
		1325
		1326	idles [((W)w)->active - 1] = idles [--idlecnt];
		1327	ev_stop (EV_A_ (W)w);
		1328	}
		1329
		1330	void
		1331	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1332	{
		1333	if (ev_is_active (w))
		1334	return;
		1335
		1336	ev_start (EV_A_ (W)w, ++preparecnt);
		1337	array_needsize (prepares, preparemax, preparecnt, );
		1338	prepares [preparecnt - 1] = w;
		1339	}
		1340
		1341	void
		1342	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1343	{
		1344	ev_clear_pending (EV_A_ (W)w);
		1345	if (ev_is_active (w))
		1346	return;
		1347
		1348	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1349	ev_stop (EV_A_ (W)w);
		1350	}
		1351
		1352	void
		1353	ev_check_start (EV_P_ struct ev_check *w)
		1354	{
		1355	if (ev_is_active (w))
		1356	return;
		1357
		1358	ev_start (EV_A_ (W)w, ++checkcnt);
		1359	array_needsize (checks, checkmax, checkcnt, );
		1360	checks [checkcnt - 1] = w;
		1361	}
		1362
		1363	void
		1364	ev_check_stop (EV_P_ struct ev_check *w)
		1365	{
		1366	ev_clear_pending (EV_A_ (W)w);
		1367	if (ev_is_active (w))
		1368	return;
		1369
		1370	checks [((W)w)->active - 1] = checks [--checkcnt];
		1371	ev_stop (EV_A_ (W)w);
		1372	}
		1373
		1374	#ifndef SA_RESTART
		1375	# define SA_RESTART 0
		1376	#endif
		1377
		1378	void
		1379	ev_signal_start (EV_P_ struct ev_signal *w)
		1380	{
		1381	#if EV_MULTIPLICITY
		1382	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1383	#endif
		1384	if (ev_is_active (w))
		1385	return;
		1386
989	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1387	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
990		1388
991	ev_start ((W)w, 1);	1389	ev_start (EV_A_ (W)w, 1);
992	array_needsize (signals, signalmax, w->signum, signals_init);	1390	array_needsize (signals, signalmax, w->signum, signals_init);
993	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1391	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
994		1392
995	if (!w->next)	1393	if (!((WL)w)->next)
996	{	1394	{
		1395	#if WIN32
		1396	signal (w->signum, sighandler);
		1397	#else
997	struct sigaction sa;	1398	struct sigaction sa;
998	sa.sa_handler = sighandler;	1399	sa.sa_handler = sighandler;
999	sigfillset (&sa.sa_mask);	1400	sigfillset (&sa.sa_mask);
1000	sa.sa_flags = 0;	1401	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1001	sigaction (w->signum, &sa, 0);	1402	sigaction (w->signum, &sa, 0);
		1403	#endif
1002	}	1404	}
1003	}	1405	}
1004		1406
1005	void	1407	void
1006	ev_signal_stop (struct ev_signal *w)	1408	ev_signal_stop (EV_P_ struct ev_signal *w)
1007	{	1409	{
1008	ev_clear_pending ((W)w);	1410	ev_clear_pending (EV_A_ (W)w);
1009	if (!ev_is_active (w))	1411	if (!ev_is_active (w))
1010	return;	1412	return;
1011		1413
1012	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1414	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1013	ev_stop ((W)w);	1415	ev_stop (EV_A_ (W)w);
1014		1416
1015	if (!signals [w->signum - 1].head)	1417	if (!signals [w->signum - 1].head)
1016	signal (w->signum, SIG_DFL);	1418	signal (w->signum, SIG_DFL);
1017	}	1419	}
1018		1420
1019	void	1421	void
1020	ev_idle_start (struct ev_idle *w)	1422	ev_child_start (EV_P_ struct ev_child *w)
1021	{	1423	{
		1424	#if EV_MULTIPLICITY
		1425	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1426	#endif
1022	if (ev_is_active (w))	1427	if (ev_is_active (w))
1023	return;	1428	return;
1024		1429
1025	ev_start ((W)w, ++idlecnt);	1430	ev_start (EV_A_ (W)w, 1);
1026	array_needsize (idles, idlemax, idlecnt, );	1431	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1027	idles [idlecnt - 1] = w;
1028	}	1432	}
1029		1433
1030	void	1434	void
1031	ev_idle_stop (struct ev_idle *w)	1435	ev_child_stop (EV_P_ struct ev_child *w)
1032	{	1436	{
1033	ev_clear_pending ((W)w);	1437	ev_clear_pending (EV_A_ (W)w);
1034	if (ev_is_active (w))	1438	if (ev_is_active (w))
1035	return;	1439	return;
1036		1440
1037	idles [w->active - 1] = idles [--idlecnt];
1038	ev_stop ((W)w);
1039	}
1040
1041	void
1042	ev_prepare_start (struct ev_prepare *w)
1043	{
1044	if (ev_is_active (w))
1045	return;
1046
1047	ev_start ((W)w, ++preparecnt);
1048	array_needsize (prepares, preparemax, preparecnt, );
1049	prepares [preparecnt - 1] = w;
1050	}
1051
1052	void
1053	ev_prepare_stop (struct ev_prepare *w)
1054	{
1055	ev_clear_pending ((W)w);
1056	if (ev_is_active (w))
1057	return;
1058
1059	prepares [w->active - 1] = prepares [--preparecnt];
1060	ev_stop ((W)w);
1061	}
1062
1063	void
1064	ev_check_start (struct ev_check *w)
1065	{
1066	if (ev_is_active (w))
1067	return;
1068
1069	ev_start ((W)w, ++checkcnt);
1070	array_needsize (checks, checkmax, checkcnt, );
1071	checks [checkcnt - 1] = w;
1072	}
1073
1074	void
1075	ev_check_stop (struct ev_check *w)
1076	{
1077	ev_clear_pending ((W)w);
1078	if (ev_is_active (w))
1079	return;
1080
1081	checks [w->active - 1] = checks [--checkcnt];
1082	ev_stop ((W)w);
1083	}
1084
1085	void
1086	ev_child_start (struct ev_child *w)
1087	{
1088	if (ev_is_active (w))
1089	return;
1090
1091	ev_start ((W)w, 1);
1092	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1093	}
1094
1095	void
1096	ev_child_stop (struct ev_child *w)
1097	{
1098	ev_clear_pending ((W)w);
1099	if (ev_is_active (w))
1100	return;
1101
1102	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1441	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1103	ev_stop ((W)w);	1442	ev_stop (EV_A_ (W)w);
1104	}	1443	}
1105		1444
1106	/*****************************************************************************/	1445	/*****************************************************************************/
1107		1446
1108	struct ev_once	1447	struct ev_once
…		…
1112	void (*cb)(int revents, void *arg);	1451	void (*cb)(int revents, void *arg);
1113	void *arg;	1452	void *arg;
1114	};	1453	};
1115		1454
1116	static void	1455	static void
1117	once_cb (struct ev_once *once, int revents)	1456	once_cb (EV_P_ struct ev_once *once, int revents)
1118	{	1457	{
1119	void (*cb)(int revents, void *arg) = once->cb;	1458	void (*cb)(int revents, void *arg) = once->cb;
1120	void *arg = once->arg;	1459	void *arg = once->arg;
1121		1460
1122	ev_io_stop (&once->io);	1461	ev_io_stop (EV_A_ &once->io);
1123	ev_timer_stop (&once->to);	1462	ev_timer_stop (EV_A_ &once->to);
1124	free (once);	1463	ev_free (once);
1125		1464
1126	cb (revents, arg);	1465	cb (revents, arg);
1127	}	1466	}
1128		1467
1129	static void	1468	static void
1130	once_cb_io (struct ev_io *w, int revents)	1469	once_cb_io (EV_P_ struct ev_io *w, int revents)
1131	{	1470	{
1132	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1471	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1133	}	1472	}
1134		1473
1135	static void	1474	static void
1136	once_cb_to (struct ev_timer *w, int revents)	1475	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1137	{	1476	{
1138	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1477	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1139	}	1478	}
1140		1479
1141	void	1480	void
1142	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1481	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1143	{	1482	{
1144	struct ev_once *once = malloc (sizeof (struct ev_once));	1483	struct ev_once *once = ev_malloc (sizeof (struct ev_once));
1145		1484
1146	if (!once)	1485	if (!once)
1147	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1486	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1148	else	1487	else
1149	{	1488	{
…		…
1152		1491
1153	ev_watcher_init (&once->io, once_cb_io);	1492	ev_watcher_init (&once->io, once_cb_io);
1154	if (fd >= 0)	1493	if (fd >= 0)
1155	{	1494	{
1156	ev_io_set (&once->io, fd, events);	1495	ev_io_set (&once->io, fd, events);
1157	ev_io_start (&once->io);	1496	ev_io_start (EV_A_ &once->io);
1158	}	1497	}
1159		1498
1160	ev_watcher_init (&once->to, once_cb_to);	1499	ev_watcher_init (&once->to, once_cb_to);
1161	if (timeout >= 0.)	1500	if (timeout >= 0.)
1162	{	1501	{
1163	ev_timer_set (&once->to, timeout, 0.);	1502	ev_timer_set (&once->to, timeout, 0.);
1164	ev_timer_start (&once->to);	1503	ev_timer_start (EV_A_ &once->to);
1165	}	1504	}
1166	}	1505	}
1167	}	1506	}
1168		1507
1169	/*****************************************************************************/
1170
1171	#if 0
1172
1173	struct ev_io wio;
1174
1175	static void
1176	sin_cb (struct ev_io *w, int revents)
1177	{
1178	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1179	}
1180
1181	static void
1182	ocb (struct ev_timer *w, int revents)
1183	{
1184	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1185	ev_timer_stop (w);
1186	ev_timer_start (w);
1187	}
1188
1189	static void
1190	scb (struct ev_signal *w, int revents)
1191	{
1192	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1193	ev_io_stop (&wio);
1194	ev_io_start (&wio);
1195	}
1196
1197	static void
1198	gcb (struct ev_signal *w, int revents)
1199	{
1200	fprintf (stderr, "generic %x\n", revents);
1201
1202	}
1203
1204	int main (void)
1205	{
1206	ev_init (0);
1207
1208	ev_io_init (&wio, sin_cb, 0, EV_READ);
1209	ev_io_start (&wio);
1210
1211	struct ev_timer t[10000];
1212
1213	#if 0
1214	int i;
1215	for (i = 0; i < 10000; ++i)
1216	{
1217	struct ev_timer *w = t + i;
1218	ev_watcher_init (w, ocb, i);
1219	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1220	ev_timer_start (w);
1221	if (drand48 () < 0.5)
1222	ev_timer_stop (w);
1223	}
1224	#endif
1225
1226	struct ev_timer t1;
1227	ev_timer_init (&t1, ocb, 5, 10);
1228	ev_timer_start (&t1);
1229
1230	struct ev_signal sig;
1231	ev_signal_init (&sig, scb, SIGQUIT);
1232	ev_signal_start (&sig);
1233
1234	struct ev_check cw;
1235	ev_check_init (&cw, gcb);
1236	ev_check_start (&cw);
1237
1238	struct ev_idle iw;
1239	ev_idle_init (&iw, gcb);
1240	ev_idle_start (&iw);
1241
1242	ev_loop (0);
1243
1244	return 0;
1245	}
1246
1247	#endif
1248
1249
1250
1251

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