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

Comparing libev/ev.c (file contents):
Revision 1.43 by root, Fri Nov 2 20:21:33 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
…		…
107		143
108	typedef struct ev_watcher *W;	144	typedef struct ev_watcher *W;
109	typedef struct ev_watcher_list *WL;	145	typedef struct ev_watcher_list *WL;
110	typedef struct ev_watcher_time *WT;	146	typedef struct ev_watcher_time *WT;
111		147
112	static ev_tstamp now_floor, now, diff; /* monotonic clock */	148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
113	ev_tstamp ev_now;
114	int ev_method;
115		149
116	static int have_monotonic; /* runtime */	150	#if WIN32
117		151	/* note: the comment below could not be substantiated, but what would I care */
118	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	152	/* MSDN says this is required to handle SIGFPE */
119	static void (*method_modify)(int fd, int oev, int nev);	153	volatile double SIGFPE_REQ = 0.0f;
120	static void (*method_poll)(ev_tstamp timeout);	154	#endif
121		155
122	/*****************************************************************************/	156	/*****************************************************************************/
123		157
124	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
125	ev_time (void)	240	ev_time (void)
126	{	241	{
127	#if EV_USE_REALTIME	242	#if EV_USE_REALTIME
128	struct timespec ts;	243	struct timespec ts;
129	clock_gettime (CLOCK_REALTIME, &ts);	244	clock_gettime (CLOCK_REALTIME, &ts);
…		…
133	gettimeofday (&tv, 0);	248	gettimeofday (&tv, 0);
134	return tv.tv_sec + tv.tv_usec * 1e-6;	249	return tv.tv_sec + tv.tv_usec * 1e-6;
135	#endif	250	#endif
136	}	251	}
137		252
138	static ev_tstamp	253	inline ev_tstamp
139	get_clock (void)	254	get_clock (void)
140	{	255	{
141	#if EV_USE_MONOTONIC	256	#if EV_USE_MONOTONIC
142	if (expect_true (have_monotonic))	257	if (expect_true (have_monotonic))
143	{	258	{
…		…
148	#endif	263	#endif
149		264
150	return ev_time ();	265	return ev_time ();
151	}	266	}
152		267
		268	ev_tstamp
		269	ev_now (EV_P)
		270	{
		271	return rt_now;
		272	}
		273
153	#define array_roundsize(base,n) ((n) \| 4 & ~3)	274	#define array_roundsize(base,n) ((n) \| 4 & ~3)
154		275
155	#define array_needsize(base,cur,cnt,init) \	276	#define array_needsize(base,cur,cnt,init) \
156	if (expect_false ((cnt) > cur)) \	277	if (expect_false ((cnt) > cur)) \
157	{ \	278	{ \
158	int newcnt = cur; \	279	int newcnt = cur; \
159	do \	280	do \
160	{ \	281	{ \
161	newcnt = array_roundsize (base, newcnt << 1); \	282	newcnt = array_roundsize (base, newcnt << 1); \
162	} \	283	} \
163	while ((cnt) > newcnt); \	284	while ((cnt) > newcnt); \
164	\	285	\
165	base = realloc (base, sizeof (base) (newcnt)); \	286	base = ev_realloc (base, sizeof (base) (newcnt)); \
166	init (base + cur, newcnt - cur); \	287	init (base + cur, newcnt - cur); \
167	cur = newcnt; \	288	cur = newcnt; \
168	}	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;
169		301
170	/*****************************************************************************/	302	/*****************************************************************************/
171
172	typedef struct
173	{
174	struct ev_io *head;
175	unsigned char events;
176	unsigned char reify;
177	} ANFD;
178
179	static ANFD *anfds;
180	static int anfdmax;
181		303
182	static void	304	static void
183	anfds_init (ANFD *base, int count)	305	anfds_init (ANFD *base, int count)
184	{	306	{
185	while (count--)	307	while (count--)
…		…
190		312
191	++base;	313	++base;
192	}	314	}
193	}	315	}
194		316
195	typedef struct
196	{
197	W w;
198	int events;
199	} ANPENDING;
200
201	static ANPENDING *pendings [NUMPRI];
202	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
203
204	static void	317	static void
205	event (W w, int events)	318	event (EV_P_ W w, int events)
206	{	319	{
207	if (w->pending)	320	if (w->pending)
208	{	321	{
209	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	322	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
210	return;	323	return;
…		…
215	pendings [ABSPRI (w)][w->pending - 1].w = w;	328	pendings [ABSPRI (w)][w->pending - 1].w = w;
216	pendings [ABSPRI (w)][w->pending - 1].events = events;	329	pendings [ABSPRI (w)][w->pending - 1].events = events;
217	}	330	}
218		331
219	static void	332	static void
220	queue_events (W *events, int eventcnt, int type)	333	queue_events (EV_P_ W *events, int eventcnt, int type)
221	{	334	{
222	int i;	335	int i;
223		336
224	for (i = 0; i < eventcnt; ++i)	337	for (i = 0; i < eventcnt; ++i)
225	event (events [i], type);	338	event (EV_A_ events [i], type);
226	}	339	}
227		340
228	static void	341	static void
229	fd_event (int fd, int events)	342	fd_event (EV_P_ int fd, int events)
230	{	343	{
231	ANFD *anfd = anfds + fd;	344	ANFD *anfd = anfds + fd;
232	struct ev_io *w;	345	struct ev_io *w;
233		346
234	for (w = anfd->head; w; w = w->next)	347	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
235	{	348	{
236	int ev = w->events & events;	349	int ev = w->events & events;
237		350
238	if (ev)	351	if (ev)
239	event ((W)w, ev);	352	event (EV_A_ (W)w, ev);
240	}	353	}
241	}	354	}
242		355
243	/*****************************************************************************/	356	/*****************************************************************************/
244		357
245	static int *fdchanges;
246	static int fdchangemax, fdchangecnt;
247
248	static void	358	static void
249	fd_reify (void)	359	fd_reify (EV_P)
250	{	360	{
251	int i;	361	int i;
252		362
253	for (i = 0; i < fdchangecnt; ++i)	363	for (i = 0; i < fdchangecnt; ++i)
254	{	364	{
…		…
256	ANFD *anfd = anfds + fd;	366	ANFD *anfd = anfds + fd;
257	struct ev_io *w;	367	struct ev_io *w;
258		368
259	int events = 0;	369	int events = 0;
260		370
261	for (w = anfd->head; w; w = w->next)	371	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
262	events \|= w->events;	372	events \|= w->events;
263		373
264	anfd->reify = 0;	374	anfd->reify = 0;
265		375
266	if (anfd->events != events)
267	{
268	method_modify (fd, anfd->events, events);	376	method_modify (EV_A_ fd, anfd->events, events);
269	anfd->events = events;	377	anfd->events = events;
270	}
271	}	378	}
272		379
273	fdchangecnt = 0;	380	fdchangecnt = 0;
274	}	381	}
275		382
276	static void	383	static void
277	fd_change (int fd)	384	fd_change (EV_P_ int fd)
278	{	385	{
279	if (anfds [fd].reify \|\| fdchangecnt < 0)	386	if (anfds [fd].reify)
280	return;	387	return;
281		388
282	anfds [fd].reify = 1;	389	anfds [fd].reify = 1;
283		390
284	++fdchangecnt;	391	++fdchangecnt;
285	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	392	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
286	fdchanges [fdchangecnt - 1] = fd;	393	fdchanges [fdchangecnt - 1] = fd;
287	}	394	}
288		395
289	static void	396	static void
290	fd_kill (int fd)	397	fd_kill (EV_P_ int fd)
291	{	398	{
292	struct ev_io *w;	399	struct ev_io *w;
293		400
294	printf ("killing fd %d\n", fd);//D
295	while ((w = anfds [fd].head))	401	while ((w = (struct ev_io *)anfds [fd].head))
296	{	402	{
297	ev_io_stop (w);	403	ev_io_stop (EV_A_ w);
298	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	404	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
299	}	405	}
300	}	406	}
301		407
302	/* called on EBADF to verify fds */	408	/* called on EBADF to verify fds */
303	static void	409	static void
304	fd_ebadf (void)	410	fd_ebadf (EV_P)
305	{	411	{
306	int fd;	412	int fd;
307		413
308	for (fd = 0; fd < anfdmax; ++fd)	414	for (fd = 0; fd < anfdmax; ++fd)
309	if (anfds [fd].events)	415	if (anfds [fd].events)
310	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	416	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
311	fd_kill (fd);	417	fd_kill (EV_A_ fd);
312	}	418	}
313		419
314	/* 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 */
315	static void	421	static void
316	fd_enomem (void)	422	fd_enomem (EV_P)
317	{	423	{
318	int fd = anfdmax;	424	int fd;
319		425
320	while (fd--)	426	for (fd = anfdmax; fd--; )
321	if (anfds [fd].events)	427	if (anfds [fd].events)
322	{	428	{
323	close (fd);
324	fd_kill (fd);	429	fd_kill (EV_A_ fd);
325	return;	430	return;
326	}	431	}
327	}	432	}
328		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
329	/*****************************************************************************/	449	/*****************************************************************************/
330		450
331	static struct ev_timer **timers;
332	static int timermax, timercnt;
333
334	static struct ev_periodic **periodics;
335	static int periodicmax, periodiccnt;
336
337	static void	451	static void
338	upheap (WT *timers, int k)	452	upheap (WT *heap, int k)
339	{	453	{
340	WT w = timers [k];	454	WT w = heap [k];
341		455
342	while (k && timers [k >> 1]->at > w->at)	456	while (k && heap [k >> 1]->at > w->at)
343	{	457	{
344	timers [k] = timers [k >> 1];	458	heap [k] = heap [k >> 1];
345	timers [k]->active = k + 1;	459	((W)heap [k])->active = k + 1;
346	k >>= 1;	460	k >>= 1;
347	}	461	}
348		462
349	timers [k] = w;	463	heap [k] = w;
350	timers [k]->active = k + 1;	464	((W)heap [k])->active = k + 1;
351		465
352	}	466	}
353		467
354	static void	468	static void
355	downheap (WT *timers, int N, int k)	469	downheap (WT *heap, int N, int k)
356	{	470	{
357	WT w = timers [k];	471	WT w = heap [k];
358		472
359	while (k < (N >> 1))	473	while (k < (N >> 1))
360	{	474	{
361	int j = k << 1;	475	int j = k << 1;
362		476
363	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	477	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
364	++j;	478	++j;
365		479
366	if (w->at <= timers [j]->at)	480	if (w->at <= heap [j]->at)
367	break;	481	break;
368		482
369	timers [k] = timers [j];	483	heap [k] = heap [j];
370	timers [k]->active = k + 1;	484	((W)heap [k])->active = k + 1;
371	k = j;	485	k = j;
372	}	486	}
373		487
374	timers [k] = w;	488	heap [k] = w;
375	timers [k]->active = k + 1;	489	((W)heap [k])->active = k + 1;
376	}	490	}
377		491
378	/*****************************************************************************/	492	/*****************************************************************************/
379		493
380	typedef struct	494	typedef struct
381	{	495	{
382	struct ev_signal *head;	496	WL head;
383	sig_atomic_t volatile gotsig;	497	sig_atomic_t volatile gotsig;
384	} ANSIG;	498	} ANSIG;
385		499
386	static ANSIG *signals;	500	static ANSIG *signals;
387	static int signalmax;	501	static int signalmax;
…		…
403	}	517	}
404		518
405	static void	519	static void
406	sighandler (int signum)	520	sighandler (int signum)
407	{	521	{
		522	#if WIN32
		523	signal (signum, sighandler);
		524	#endif
		525
408	signals [signum - 1].gotsig = 1;	526	signals [signum - 1].gotsig = 1;
409		527
410	if (!gotsig)	528	if (!gotsig)
411	{	529	{
		530	int old_errno = errno;
412	gotsig = 1;	531	gotsig = 1;
413	write (sigpipe [1], &signum, 1);	532	write (sigpipe [1], &signum, 1);
		533	errno = old_errno;
414	}	534	}
415	}	535	}
416		536
417	static void	537	static void
418	sigcb (struct ev_io *iow, int revents)	538	sigcb (EV_P_ struct ev_io *iow, int revents)
419	{	539	{
420	struct ev_signal *w;	540	WL w;
421	int signum;	541	int signum;
422		542
423	read (sigpipe [0], &revents, 1);	543	read (sigpipe [0], &revents, 1);
424	gotsig = 0;	544	gotsig = 0;
425		545
…		…
427	if (signals [signum].gotsig)	547	if (signals [signum].gotsig)
428	{	548	{
429	signals [signum].gotsig = 0;	549	signals [signum].gotsig = 0;
430		550
431	for (w = signals [signum].head; w; w = w->next)	551	for (w = signals [signum].head; w; w = w->next)
432	event ((W)w, EV_SIGNAL);	552	event (EV_A_ (W)w, EV_SIGNAL);
433	}	553	}
434	}	554	}
435		555
436	static void	556	static void
437	siginit (void)	557	siginit (EV_P)
438	{	558	{
		559	#ifndef WIN32
439	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	560	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
440	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	561	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
441		562
442	/* rather than sort out wether we really need nb, set it */	563	/* rather than sort out wether we really need nb, set it */
443	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	564	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
444	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	565	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		566	#endif
445		567
446	ev_io_set (&sigev, sigpipe [0], EV_READ);	568	ev_io_set (&sigev, sigpipe [0], EV_READ);
447	ev_io_start (&sigev);	569	ev_io_start (EV_A_ &sigev);
		570	ev_unref (EV_A); /* child watcher should not keep loop alive */
448	}	571	}
449		572
450	/*****************************************************************************/	573	/*****************************************************************************/
451		574
452	static struct ev_idle **idles;	575	#ifndef WIN32
453	static int idlemax, idlecnt;
454
455	static struct ev_prepare **prepares;
456	static int preparemax, preparecnt;
457
458	static struct ev_check **checks;
459	static int checkmax, checkcnt;
460
461	/*****************************************************************************/
462		576
463	static struct ev_child *childs [PID_HASHSIZE];	577	static struct ev_child *childs [PID_HASHSIZE];
464	static struct ev_signal childev;	578	static struct ev_signal childev;
465		579
466	#ifndef WCONTINUED	580	#ifndef WCONTINUED
467	# define WCONTINUED 0	581	# define WCONTINUED 0
468	#endif	582	#endif
469		583
470	static void	584	static void
471	childcb (struct ev_signal *sw, int revents)	585	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
472	{	586	{
473	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	{
474	int pid, status;	602	int pid, status;
475		603
476	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	604	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
477	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	605	{
478	if (w->pid == pid \|\| !w->pid)	606	/* make sure we are called again until all childs have been reaped */
479	{	607	event (EV_A_ (W)sw, EV_SIGNAL);
480	w->status = status;	608
481	event ((W)w, EV_CHILD);	609	child_reap (EV_A_ sw, pid, pid, status);
482	}	610	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		611	}
483	}	612	}
		613
		614	#endif
484		615
485	/*****************************************************************************/	616	/*****************************************************************************/
486		617
		618	#if EV_USE_KQUEUE
		619	# include "ev_kqueue.c"
		620	#endif
487	#if EV_USE_EPOLL	621	#if EV_USE_EPOLL
488	# include "ev_epoll.c"	622	# include "ev_epoll.c"
489	#endif	623	#endif
490	#if EV_USE_POLL	624	#if EV_USE_POLL
491	# include "ev_poll.c"	625	# include "ev_poll.c"
…		…
504	ev_version_minor (void)	638	ev_version_minor (void)
505	{	639	{
506	return EV_VERSION_MINOR;	640	return EV_VERSION_MINOR;
507	}	641	}
508		642
509	/* 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 */
510	static int	644	static int
511	enable_secure ()	645	enable_secure (void)
512	{	646	{
		647	#ifdef WIN32
		648	return 0;
		649	#else
513	return getuid () != geteuid ()	650	return getuid () != geteuid ()
514	\|\| getgid () != getegid ();	651	\|\| getgid () != getegid ();
		652	#endif
515	}	653	}
516		654
517	int ev_init (int methods)	655	int
		656	ev_method (EV_P)
518	{	657	{
		658	return method;
		659	}
		660
		661	static void
		662	loop_init (EV_P_ int methods)
		663	{
519	if (!ev_method)	664	if (!method)
520	{	665	{
521	#if EV_USE_MONOTONIC	666	#if EV_USE_MONOTONIC
522	{	667	{
523	struct timespec ts;	668	struct timespec ts;
524	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	669	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
525	have_monotonic = 1;	670	have_monotonic = 1;
526	}	671	}
527	#endif	672	#endif
528		673
529	ev_now = ev_time ();	674	rt_now = ev_time ();
530	now = get_clock ();	675	mn_now = get_clock ();
531	now_floor = now;	676	now_floor = mn_now;
532	diff = ev_now - now;	677	rtmn_diff = rt_now - mn_now;
533
534	if (pipe (sigpipe))
535	return 0;
536		678
537	if (methods == EVMETHOD_AUTO)	679	if (methods == EVMETHOD_AUTO)
538	if (!enable_secure () && getenv ("LIBEV_METHODS"))	680	if (!enable_secure () && getenv ("LIBEV_METHODS"))
539	methods = atoi (getenv ("LIBEV_METHODS"));	681	methods = atoi (getenv ("LIBEV_METHODS"));
540	else	682	else
541	methods = EVMETHOD_ANY;	683	methods = EVMETHOD_ANY;
542		684
543	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
544	#if EV_USE_EPOLL	692	#if EV_USE_EPOLL
545	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	693	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
546	#endif	694	#endif
547	#if EV_USE_POLL	695	#if EV_USE_POLL
548	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	696	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
549	#endif	697	#endif
550	#if EV_USE_SELECT	698	#if EV_USE_SELECT
551	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	699	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
552	#endif	700	#endif
553		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
554	if (ev_method)	826	if (ev_method (EV_A))
555	{	827	{
556	ev_watcher_init (&sigev, sigcb);
557	siginit ();	828	siginit (EV_A);
558		829
		830	#ifndef WIN32
559	ev_signal_init (&childev, childcb, SIGCHLD);	831	ev_signal_init (&childev, childcb, SIGCHLD);
		832	ev_set_priority (&childev, EV_MAXPRI);
560	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
561	}	836	}
		837	else
		838	default_loop = 0;
562	}	839	}
563		840
564	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;
565	}	872	}
566		873
567	/*****************************************************************************/	874	/*****************************************************************************/
568		875
569	void
570	ev_fork_prepare (void)
571	{
572	/* nop */
573	}
574
575	void
576	ev_fork_parent (void)
577	{
578	/* nop */
579	}
580
581	void
582	ev_fork_child (void)
583	{
584	#if EV_USE_EPOLL
585	if (ev_method == EVMETHOD_EPOLL)
586	epoll_postfork_child ();
587	#endif
588
589	ev_io_stop (&sigev);
590	close (sigpipe [0]);
591	close (sigpipe [1]);
592	pipe (sigpipe);
593	siginit ();
594	}
595
596	/*****************************************************************************/
597
598	static void	876	static void
599	call_pending (void)	877	call_pending (EV_P)
600	{	878	{
601	int pri;	879	int pri;
602		880
603	for (pri = NUMPRI; pri--; )	881	for (pri = NUMPRI; pri--; )
604	while (pendingcnt [pri])	882	while (pendingcnt [pri])
…		…
606	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	884	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
607		885
608	if (p->w)	886	if (p->w)
609	{	887	{
610	p->w->pending = 0;	888	p->w->pending = 0;
611	p->w->cb (p->w, p->events);	889	p->w->cb (EV_A_ p->w, p->events);
612	}	890	}
613	}	891	}
614	}	892	}
615		893
616	static void	894	static void
617	timers_reify (void)	895	timers_reify (EV_P)
618	{	896	{
619	while (timercnt && timers [0]->at <= now)	897	while (timercnt && ((WT)timers [0])->at <= mn_now)
620	{	898	{
621	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)));
622		902
623	/* first reschedule or stop timer */	903	/* first reschedule or stop timer */
624	if (w->repeat)	904	if (w->repeat)
625	{	905	{
626	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.));
627	w->at = now + w->repeat;	907	((WT)w)->at = mn_now + w->repeat;
628	downheap ((WT *)timers, timercnt, 0);	908	downheap ((WT *)timers, timercnt, 0);
629	}	909	}
630	else	910	else
631	ev_timer_stop (w); /* nonrepeating: stop timer */	911	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
632		912
633	event ((W)w, EV_TIMEOUT);	913	event (EV_A_ (W)w, EV_TIMEOUT);
634	}	914	}
635	}	915	}
636		916
637	static void	917	static void
638	periodics_reify (void)	918	periodics_reify (EV_P)
639	{	919	{
640	while (periodiccnt && periodics [0]->at <= ev_now)	920	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
641	{	921	{
642	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)));
643		925
644	/* first reschedule or stop timer */	926	/* first reschedule or stop timer */
645	if (w->interval)	927	if (w->interval)
646	{	928	{
647	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;
648	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));
649	downheap ((WT *)periodics, periodiccnt, 0);	931	downheap ((WT *)periodics, periodiccnt, 0);
650	}	932	}
651	else	933	else
652	ev_periodic_stop (w); /* nonrepeating: stop timer */	934	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
653		935
654	event ((W)w, EV_PERIODIC);	936	event (EV_A_ (W)w, EV_PERIODIC);
655	}	937	}
656	}	938	}
657		939
658	static void	940	static void
659	periodics_reschedule (ev_tstamp diff)	941	periodics_reschedule (EV_P)
660	{	942	{
661	int i;	943	int i;
662		944
663	/* adjust periodics after time jump */	945	/* adjust periodics after time jump */
664	for (i = 0; i < periodiccnt; ++i)	946	for (i = 0; i < periodiccnt; ++i)
665	{	947	{
666	struct ev_periodic *w = periodics [i];	948	struct ev_periodic *w = periodics [i];
667		949
668	if (w->interval)	950	if (w->interval)
669	{	951	{
670	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;
671		953
672	if (fabs (diff) >= 1e-4)	954	if (fabs (diff) >= 1e-4)
673	{	955	{
674	ev_periodic_stop (w);	956	ev_periodic_stop (EV_A_ w);
675	ev_periodic_start (w);	957	ev_periodic_start (EV_A_ w);
676		958
677	i = 0; /* restart loop, inefficient, but time jumps should be rare */	959	i = 0; /* restart loop, inefficient, but time jumps should be rare */
678	}	960	}
679	}	961	}
680	}	962	}
681	}	963	}
682		964
683	static int	965	inline int
684	time_update_monotonic (void)	966	time_update_monotonic (EV_P)
685	{	967	{
686	now = get_clock ();	968	mn_now = get_clock ();
687		969
688	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	970	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
689	{	971	{
690	ev_now = now + diff;	972	rt_now = rtmn_diff + mn_now;
691	return 0;	973	return 0;
692	}	974	}
693	else	975	else
694	{	976	{
695	now_floor = now;	977	now_floor = mn_now;
696	ev_now = ev_time ();	978	rt_now = ev_time ();
697	return 1;	979	return 1;
698	}	980	}
699	}	981	}
700		982
701	static void	983	static void
702	time_update (void)	984	time_update (EV_P)
703	{	985	{
704	int i;	986	int i;
705		987
706	#if EV_USE_MONOTONIC	988	#if EV_USE_MONOTONIC
707	if (expect_true (have_monotonic))	989	if (expect_true (have_monotonic))
708	{	990	{
709	if (time_update_monotonic ())	991	if (time_update_monotonic (EV_A))
710	{	992	{
711	ev_tstamp odiff = diff;	993	ev_tstamp odiff = rtmn_diff;
712		994
713	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 */
714	{	996	{
715	diff = ev_now - now;	997	rtmn_diff = rt_now - mn_now;
716		998
717	if (fabs (odiff - diff) < MIN_TIMEJUMP)	999	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
718	return; /* all is well */	1000	return; /* all is well */
719		1001
720	ev_now = ev_time ();	1002	rt_now = ev_time ();
721	now = get_clock ();	1003	mn_now = get_clock ();
722	now_floor = now;	1004	now_floor = mn_now;
723	}	1005	}
724		1006
725	periodics_reschedule (diff - odiff);	1007	periodics_reschedule (EV_A);
726	/* 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) */
727	}	1010	}
728	}	1011	}
729	else	1012	else
730	#endif	1013	#endif
731	{	1014	{
732	ev_now = ev_time ();	1015	rt_now = ev_time ();
733		1016
734	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))
735	{	1018	{
736	periodics_reschedule (ev_now - now);	1019	periodics_reschedule (EV_A);
737		1020
738	/* 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 */
739	for (i = 0; i < timercnt; ++i)	1022	for (i = 0; i < timercnt; ++i)
740	timers [i]->at += diff;	1023	((WT)timers [i])->at += rt_now - mn_now;
741	}	1024	}
742		1025
743	now = ev_now;	1026	mn_now = rt_now;
744	}	1027	}
745	}	1028	}
746		1029
747	int ev_loop_done;	1030	void
		1031	ev_ref (EV_P)
		1032	{
		1033	++activecnt;
		1034	}
748		1035
		1036	void
		1037	ev_unref (EV_P)
		1038	{
		1039	--activecnt;
		1040	}
		1041
		1042	static int loop_done;
		1043
		1044	void
749	void ev_loop (int flags)	1045	ev_loop (EV_P_ int flags)
750	{	1046	{
751	double block;	1047	double block;
752	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1048	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
753		1049
754	do	1050	do
755	{	1051	{
756	/* queue check watchers (and execute them) */	1052	/* queue check watchers (and execute them) */
757	if (expect_false (preparecnt))	1053	if (expect_false (preparecnt))
758	{	1054	{
759	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1055	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
760	call_pending ();	1056	call_pending (EV_A);
761	}	1057	}
762		1058
		1059	/* we might have forked, so reify kernel state if necessary */
		1060	if (expect_false (postfork))
		1061	loop_fork (EV_A);
		1062
763	/* update fd-related kernel structures */	1063	/* update fd-related kernel structures */
764	fd_reify ();	1064	fd_reify (EV_A);
765		1065
766	/* calculate blocking time */	1066	/* calculate blocking time */
767		1067
768	/* 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
769	always have timers, we just calculate it always */	1069	always have timers, we just calculate it always */
770	#if EV_USE_MONOTONIC	1070	#if EV_USE_MONOTONIC
771	if (expect_true (have_monotonic))	1071	if (expect_true (have_monotonic))
772	time_update_monotonic ();	1072	time_update_monotonic (EV_A);
773	else	1073	else
774	#endif	1074	#endif
775	{	1075	{
776	ev_now = ev_time ();	1076	rt_now = ev_time ();
777	now = ev_now;	1077	mn_now = rt_now;
778	}	1078	}
779		1079
780	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1080	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
781	block = 0.;	1081	block = 0.;
782	else	1082	else
783	{	1083	{
784	block = MAX_BLOCKTIME;	1084	block = MAX_BLOCKTIME;
785		1085
786	if (timercnt)	1086	if (timercnt)
787	{	1087	{
788	ev_tstamp to = timers [0]->at - now + method_fudge;	1088	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
789	if (block > to) block = to;	1089	if (block > to) block = to;
790	}	1090	}
791		1091
792	if (periodiccnt)	1092	if (periodiccnt)
793	{	1093	{
794	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1094	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
795	if (block > to) block = to;	1095	if (block > to) block = to;
796	}	1096	}
797		1097
798	if (block < 0.) block = 0.;	1098	if (block < 0.) block = 0.;
799	}	1099	}
800		1100
801	method_poll (block);	1101	method_poll (EV_A_ block);
802		1102
803	/* update ev_now, do magic */	1103	/* update rt_now, do magic */
804	time_update ();	1104	time_update (EV_A);
805		1105
806	/* queue pending timers and reschedule them */	1106	/* queue pending timers and reschedule them */
807	timers_reify (); /* relative timers called last */	1107	timers_reify (EV_A); /* relative timers called last */
808	periodics_reify (); /* absolute timers called first */	1108	periodics_reify (EV_A); /* absolute timers called first */
809		1109
810	/* queue idle watchers unless io or timers are pending */	1110	/* queue idle watchers unless io or timers are pending */
811	if (!pendingcnt)	1111	if (!pendingcnt)
812	queue_events ((W *)idles, idlecnt, EV_IDLE);	1112	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
813		1113
814	/* queue check watchers, to be executed first */	1114	/* queue check watchers, to be executed first */
815	if (checkcnt)	1115	if (checkcnt)
816	queue_events ((W *)checks, checkcnt, EV_CHECK);	1116	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
817		1117
818	call_pending ();	1118	call_pending (EV_A);
819	}	1119	}
820	while (!ev_loop_done);	1120	while (activecnt && !loop_done);
821		1121
822	if (ev_loop_done != 2)	1122	if (loop_done != 2)
823	ev_loop_done = 0;	1123	loop_done = 0;
		1124	}
		1125
		1126	void
		1127	ev_unloop (EV_P_ int how)
		1128	{
		1129	loop_done = how;
824	}	1130	}
825		1131
826	/*****************************************************************************/	1132	/*****************************************************************************/
827		1133
828	static void	1134	inline void
829	wlist_add (WL *head, WL elem)	1135	wlist_add (WL *head, WL elem)
830	{	1136	{
831	elem->next = *head;	1137	elem->next = *head;
832	*head = elem;	1138	*head = elem;
833	}	1139	}
834		1140
835	static void	1141	inline void
836	wlist_del (WL *head, WL elem)	1142	wlist_del (WL *head, WL elem)
837	{	1143	{
838	while (*head)	1144	while (*head)
839	{	1145	{
840	if (*head == elem)	1146	if (*head == elem)
…		…
845		1151
846	head = &(*head)->next;	1152	head = &(*head)->next;
847	}	1153	}
848	}	1154	}
849		1155
850	static void	1156	inline void
851	ev_clear_pending (W w)	1157	ev_clear_pending (EV_P_ W w)
852	{	1158	{
853	if (w->pending)	1159	if (w->pending)
854	{	1160	{
855	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1161	pendings [ABSPRI (w)][w->pending - 1].w = 0;
856	w->pending = 0;	1162	w->pending = 0;
857	}	1163	}
858	}	1164	}
859		1165
860	static void	1166	inline void
861	ev_start (W w, int active)	1167	ev_start (EV_P_ W w, int active)
862	{	1168	{
863	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1169	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
864	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1170	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
865		1171
866	w->active = active;	1172	w->active = active;
		1173	ev_ref (EV_A);
867	}	1174	}
868		1175
869	static void	1176	inline void
870	ev_stop (W w)	1177	ev_stop (EV_P_ W w)
871	{	1178	{
		1179	ev_unref (EV_A);
872	w->active = 0;	1180	w->active = 0;
873	}	1181	}
874		1182
875	/*****************************************************************************/	1183	/*****************************************************************************/
876		1184
877	void	1185	void
878	ev_io_start (struct ev_io *w)	1186	ev_io_start (EV_P_ struct ev_io *w)
879	{	1187	{
880	int fd = w->fd;	1188	int fd = w->fd;
881		1189
882	if (ev_is_active (w))	1190	if (ev_is_active (w))
883	return;	1191	return;
884		1192
885	assert (("ev_io_start called with negative fd", fd >= 0));	1193	assert (("ev_io_start called with negative fd", fd >= 0));
886		1194
887	ev_start ((W)w, 1);	1195	ev_start (EV_A_ (W)w, 1);
888	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1196	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
889	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1197	wlist_add ((WL *)&anfds[fd].head, (WL)w);
890		1198
891	fd_change (fd);	1199	fd_change (EV_A_ fd);
892	}	1200	}
893		1201
894	void	1202	void
895	ev_io_stop (struct ev_io *w)	1203	ev_io_stop (EV_P_ struct ev_io *w)
896	{	1204	{
897	ev_clear_pending ((W)w);	1205	ev_clear_pending (EV_A_ (W)w);
898	if (!ev_is_active (w))	1206	if (!ev_is_active (w))
899	return;	1207	return;
900		1208
901	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1209	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
902	ev_stop ((W)w);	1210	ev_stop (EV_A_ (W)w);
903		1211
904	fd_change (w->fd);	1212	fd_change (EV_A_ w->fd);
905	}	1213	}
906		1214
907	void	1215	void
908	ev_timer_start (struct ev_timer *w)	1216	ev_timer_start (EV_P_ struct ev_timer *w)
909	{	1217	{
910	if (ev_is_active (w))	1218	if (ev_is_active (w))
911	return;	1219	return;
912		1220
913	w->at += now;	1221	((WT)w)->at += mn_now;
914		1222
915	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.));
916		1224
917	ev_start ((W)w, ++timercnt);	1225	ev_start (EV_A_ (W)w, ++timercnt);
918	array_needsize (timers, timermax, timercnt, );	1226	array_needsize (timers, timermax, timercnt, );
919	timers [timercnt - 1] = w;	1227	timers [timercnt - 1] = w;
920	upheap ((WT *)timers, timercnt - 1);	1228	upheap ((WT *)timers, timercnt - 1);
921	}
922		1229
		1230	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1231	}
		1232
923	void	1233	void
924	ev_timer_stop (struct ev_timer *w)	1234	ev_timer_stop (EV_P_ struct ev_timer *w)
925	{	1235	{
926	ev_clear_pending ((W)w);	1236	ev_clear_pending (EV_A_ (W)w);
927	if (!ev_is_active (w))	1237	if (!ev_is_active (w))
928	return;	1238	return;
929		1239
		1240	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1241
930	if (w->active < timercnt--)	1242	if (((W)w)->active < timercnt--)
931	{	1243	{
932	timers [w->active - 1] = timers [timercnt];	1244	timers [((W)w)->active - 1] = timers [timercnt];
933	downheap ((WT *)timers, timercnt, w->active - 1);	1245	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
934	}	1246	}
935		1247
936	w->at = w->repeat;	1248	((WT)w)->at = w->repeat;
937		1249
938	ev_stop ((W)w);	1250	ev_stop (EV_A_ (W)w);
939	}	1251	}
940		1252
941	void	1253	void
942	ev_timer_again (struct ev_timer *w)	1254	ev_timer_again (EV_P_ struct ev_timer *w)
943	{	1255	{
944	if (ev_is_active (w))	1256	if (ev_is_active (w))
945	{	1257	{
946	if (w->repeat)	1258	if (w->repeat)
947	{	1259	{
948	w->at = now + w->repeat;	1260	((WT)w)->at = mn_now + w->repeat;
949	downheap ((WT *)timers, timercnt, w->active - 1);	1261	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
950	}	1262	}
951	else	1263	else
952	ev_timer_stop (w);	1264	ev_timer_stop (EV_A_ w);
953	}	1265	}
954	else if (w->repeat)	1266	else if (w->repeat)
955	ev_timer_start (w);	1267	ev_timer_start (EV_A_ w);
956	}	1268	}
957		1269
958	void	1270	void
959	ev_periodic_start (struct ev_periodic *w)	1271	ev_periodic_start (EV_P_ struct ev_periodic *w)
960	{	1272	{
961	if (ev_is_active (w))	1273	if (ev_is_active (w))
962	return;	1274	return;
963		1275
964	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.));
965		1277
966	/* 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 */
967	if (w->interval)	1279	if (w->interval)
968	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;
969		1281
970	ev_start ((W)w, ++periodiccnt);	1282	ev_start (EV_A_ (W)w, ++periodiccnt);
971	array_needsize (periodics, periodicmax, periodiccnt, );	1283	array_needsize (periodics, periodicmax, periodiccnt, );
972	periodics [periodiccnt - 1] = w;	1284	periodics [periodiccnt - 1] = w;
973	upheap ((WT *)periodics, periodiccnt - 1);	1285	upheap ((WT *)periodics, periodiccnt - 1);
974	}
975		1286
		1287	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1288	}
		1289
976	void	1290	void
977	ev_periodic_stop (struct ev_periodic *w)	1291	ev_periodic_stop (EV_P_ struct ev_periodic *w)
978	{	1292	{
979	ev_clear_pending ((W)w);	1293	ev_clear_pending (EV_A_ (W)w);
980	if (!ev_is_active (w))	1294	if (!ev_is_active (w))
981	return;	1295	return;
982		1296
		1297	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1298
983	if (w->active < periodiccnt--)	1299	if (((W)w)->active < periodiccnt--)
984	{	1300	{
985	periodics [w->active - 1] = periodics [periodiccnt];	1301	periodics [((W)w)->active - 1] = periodics [periodiccnt];
986	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1302	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
987	}	1303	}
988		1304
989	ev_stop ((W)w);	1305	ev_stop (EV_A_ (W)w);
990	}	1306	}
991		1307
992	void	1308	void
993	ev_signal_start (struct ev_signal *w)	1309	ev_idle_start (EV_P_ struct ev_idle *w)
994	{	1310	{
995	if (ev_is_active (w))	1311	if (ev_is_active (w))
996	return;	1312	return;
997		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
998	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));
999		1388
1000	ev_start ((W)w, 1);	1389	ev_start (EV_A_ (W)w, 1);
1001	array_needsize (signals, signalmax, w->signum, signals_init);	1390	array_needsize (signals, signalmax, w->signum, signals_init);
1002	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1391	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1003		1392
1004	if (!w->next)	1393	if (!((WL)w)->next)
1005	{	1394	{
		1395	#if WIN32
		1396	signal (w->signum, sighandler);
		1397	#else
1006	struct sigaction sa;	1398	struct sigaction sa;
1007	sa.sa_handler = sighandler;	1399	sa.sa_handler = sighandler;
1008	sigfillset (&sa.sa_mask);	1400	sigfillset (&sa.sa_mask);
1009	sa.sa_flags = 0;	1401	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1010	sigaction (w->signum, &sa, 0);	1402	sigaction (w->signum, &sa, 0);
		1403	#endif
1011	}	1404	}
1012	}	1405	}
1013		1406
1014	void	1407	void
1015	ev_signal_stop (struct ev_signal *w)	1408	ev_signal_stop (EV_P_ struct ev_signal *w)
1016	{	1409	{
1017	ev_clear_pending ((W)w);	1410	ev_clear_pending (EV_A_ (W)w);
1018	if (!ev_is_active (w))	1411	if (!ev_is_active (w))
1019	return;	1412	return;
1020		1413
1021	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1414	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1022	ev_stop ((W)w);	1415	ev_stop (EV_A_ (W)w);
1023		1416
1024	if (!signals [w->signum - 1].head)	1417	if (!signals [w->signum - 1].head)
1025	signal (w->signum, SIG_DFL);	1418	signal (w->signum, SIG_DFL);
1026	}	1419	}
1027		1420
1028	void	1421	void
1029	ev_idle_start (struct ev_idle *w)	1422	ev_child_start (EV_P_ struct ev_child *w)
1030	{	1423	{
		1424	#if EV_MULTIPLICITY
		1425	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1426	#endif
1031	if (ev_is_active (w))	1427	if (ev_is_active (w))
1032	return;	1428	return;
1033		1429
1034	ev_start ((W)w, ++idlecnt);	1430	ev_start (EV_A_ (W)w, 1);
1035	array_needsize (idles, idlemax, idlecnt, );	1431	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1036	idles [idlecnt - 1] = w;
1037	}	1432	}
1038		1433
1039	void	1434	void
1040	ev_idle_stop (struct ev_idle *w)	1435	ev_child_stop (EV_P_ struct ev_child *w)
1041	{	1436	{
1042	ev_clear_pending ((W)w);	1437	ev_clear_pending (EV_A_ (W)w);
1043	if (ev_is_active (w))	1438	if (ev_is_active (w))
1044	return;	1439	return;
1045		1440
1046	idles [w->active - 1] = idles [--idlecnt];
1047	ev_stop ((W)w);
1048	}
1049
1050	void
1051	ev_prepare_start (struct ev_prepare *w)
1052	{
1053	if (ev_is_active (w))
1054	return;
1055
1056	ev_start ((W)w, ++preparecnt);
1057	array_needsize (prepares, preparemax, preparecnt, );
1058	prepares [preparecnt - 1] = w;
1059	}
1060
1061	void
1062	ev_prepare_stop (struct ev_prepare *w)
1063	{
1064	ev_clear_pending ((W)w);
1065	if (ev_is_active (w))
1066	return;
1067
1068	prepares [w->active - 1] = prepares [--preparecnt];
1069	ev_stop ((W)w);
1070	}
1071
1072	void
1073	ev_check_start (struct ev_check *w)
1074	{
1075	if (ev_is_active (w))
1076	return;
1077
1078	ev_start ((W)w, ++checkcnt);
1079	array_needsize (checks, checkmax, checkcnt, );
1080	checks [checkcnt - 1] = w;
1081	}
1082
1083	void
1084	ev_check_stop (struct ev_check *w)
1085	{
1086	ev_clear_pending ((W)w);
1087	if (ev_is_active (w))
1088	return;
1089
1090	checks [w->active - 1] = checks [--checkcnt];
1091	ev_stop ((W)w);
1092	}
1093
1094	void
1095	ev_child_start (struct ev_child *w)
1096	{
1097	if (ev_is_active (w))
1098	return;
1099
1100	ev_start ((W)w, 1);
1101	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1102	}
1103
1104	void
1105	ev_child_stop (struct ev_child *w)
1106	{
1107	ev_clear_pending ((W)w);
1108	if (ev_is_active (w))
1109	return;
1110
1111	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1441	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1112	ev_stop ((W)w);	1442	ev_stop (EV_A_ (W)w);
1113	}	1443	}
1114		1444
1115	/*****************************************************************************/	1445	/*****************************************************************************/
1116		1446
1117	struct ev_once	1447	struct ev_once
…		…
1121	void (cb)(int revents, void arg);	1451	void (cb)(int revents, void arg);
1122	void *arg;	1452	void *arg;
1123	};	1453	};
1124		1454
1125	static void	1455	static void
1126	once_cb (struct ev_once *once, int revents)	1456	once_cb (EV_P_ struct ev_once *once, int revents)
1127	{	1457	{
1128	void (cb)(int revents, void arg) = once->cb;	1458	void (cb)(int revents, void arg) = once->cb;
1129	void *arg = once->arg;	1459	void *arg = once->arg;
1130		1460
1131	ev_io_stop (&once->io);	1461	ev_io_stop (EV_A_ &once->io);
1132	ev_timer_stop (&once->to);	1462	ev_timer_stop (EV_A_ &once->to);
1133	free (once);	1463	ev_free (once);
1134		1464
1135	cb (revents, arg);	1465	cb (revents, arg);
1136	}	1466	}
1137		1467
1138	static void	1468	static void
1139	once_cb_io (struct ev_io *w, int revents)	1469	once_cb_io (EV_P_ struct ev_io *w, int revents)
1140	{	1470	{
1141	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);
1142	}	1472	}
1143		1473
1144	static void	1474	static void
1145	once_cb_to (struct ev_timer *w, int revents)	1475	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1146	{	1476	{
1147	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);
1148	}	1478	}
1149		1479
1150	void	1480	void
1151	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)
1152	{	1482	{
1153	struct ev_once *once = malloc (sizeof (struct ev_once));	1483	struct ev_once *once = ev_malloc (sizeof (struct ev_once));
1154		1484
1155	if (!once)	1485	if (!once)
1156	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1486	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1157	else	1487	else
1158	{	1488	{
…		…
1161		1491
1162	ev_watcher_init (&once->io, once_cb_io);	1492	ev_watcher_init (&once->io, once_cb_io);
1163	if (fd >= 0)	1493	if (fd >= 0)
1164	{	1494	{
1165	ev_io_set (&once->io, fd, events);	1495	ev_io_set (&once->io, fd, events);
1166	ev_io_start (&once->io);	1496	ev_io_start (EV_A_ &once->io);
1167	}	1497	}
1168		1498
1169	ev_watcher_init (&once->to, once_cb_to);	1499	ev_watcher_init (&once->to, once_cb_to);
1170	if (timeout >= 0.)	1500	if (timeout >= 0.)
1171	{	1501	{
1172	ev_timer_set (&once->to, timeout, 0.);	1502	ev_timer_set (&once->to, timeout, 0.);
1173	ev_timer_start (&once->to);	1503	ev_timer_start (EV_A_ &once->to);
1174	}	1504	}
1175	}	1505	}
1176	}	1506	}
1177		1507
1178	/*****************************************************************************/
1179
1180	#if 0
1181
1182	struct ev_io wio;
1183
1184	static void
1185	sin_cb (struct ev_io *w, int revents)
1186	{
1187	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1188	}
1189
1190	static void
1191	ocb (struct ev_timer *w, int revents)
1192	{
1193	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1194	ev_timer_stop (w);
1195	ev_timer_start (w);
1196	}
1197
1198	static void
1199	scb (struct ev_signal *w, int revents)
1200	{
1201	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1202	ev_io_stop (&wio);
1203	ev_io_start (&wio);
1204	}
1205
1206	static void
1207	gcb (struct ev_signal *w, int revents)
1208	{
1209	fprintf (stderr, "generic %x\n", revents);
1210
1211	}
1212
1213	int main (void)
1214	{
1215	ev_init (0);
1216
1217	ev_io_init (&wio, sin_cb, 0, EV_READ);
1218	ev_io_start (&wio);
1219
1220	struct ev_timer t[10000];
1221
1222	#if 0
1223	int i;
1224	for (i = 0; i < 10000; ++i)
1225	{
1226	struct ev_timer *w = t + i;
1227	ev_watcher_init (w, ocb, i);
1228	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1229	ev_timer_start (w);
1230	if (drand48 () < 0.5)
1231	ev_timer_stop (w);
1232	}
1233	#endif
1234
1235	struct ev_timer t1;
1236	ev_timer_init (&t1, ocb, 5, 10);
1237	ev_timer_start (&t1);
1238
1239	struct ev_signal sig;
1240	ev_signal_init (&sig, scb, SIGQUIT);
1241	ev_signal_start (&sig);
1242
1243	struct ev_check cw;
1244	ev_check_init (&cw, gcb);
1245	ev_check_start (&cw);
1246
1247	struct ev_idle iw;
1248	ev_idle_init (&iw, gcb);
1249	ev_idle_start (&iw);
1250
1251	ev_loop (0);
1252
1253	return 0;
1254	}
1255
1256	#endif
1257
1258
1259
1260

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Comparing libev/ev.c (file contents): Revision 1.43 by root, Fri Nov 2 20:21:33 2007 UTC vs. Revision 1.70 by root, Tue Nov 6 00:52:32 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.43 by root, Fri Nov 2 20:21:33 2007 UTC vs.
Revision 1.70 by root, Tue Nov 6 00:52:32 2007 UTC