ViewVC Help

View File | Revision Log | Show Annotations | Download File

/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 1.69 by root, Tue Nov 6 00:10:04 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)(void);
		159
		160	void ev_set_syserr_cb (void (*cb)(void))
		161	{
		162	syserr_cb = cb;
		163	}
		164
		165	static void
		166	syserr (void)
		167	{
		168	if (syserr_cb)
		169	syserr_cb ();
		170	else
		171	{
		172	perror ("libev");
		173	abort ();
		174	}
		175	}
		176
		177	static void *(*alloc)(void *ptr, long size);
		178
		179	void ev_set_allocator (void *(*cb)(void *ptr, long size))
		180	{
		181	alloc = cb;
		182	}
		183
		184	static void *
		185	ev_realloc (void *ptr, long size)
		186	{
		187	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		188
		189	if (!ptr && size)
		190	{
		191	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		192	abort ();
		193	}
		194
		195	return ptr;
		196	}
		197
		198	#define ev_malloc(size) ev_realloc (0, (size))
		199	#define ev_free(ptr) ev_realloc ((ptr), 0)
		200
		201	/*****************************************************************************/
		202
		203	typedef struct
		204	{
		205	WL head;
		206	unsigned char events;
		207	unsigned char reify;
		208	} ANFD;
		209
		210	typedef struct
		211	{
		212	W w;
		213	int events;
		214	} ANPENDING;
		215
		216	#if EV_MULTIPLICITY
		217
		218	struct ev_loop
		219	{
		220	# define VAR(name,decl) decl;
		221	# include "ev_vars.h"
		222	};
		223	# undef VAR
		224	# include "ev_wrap.h"
		225
		226	#else
		227
		228	# define VAR(name,decl) static decl;
		229	# include "ev_vars.h"
		230	# undef VAR
		231
		232	#endif
		233
		234	/*****************************************************************************/
		235
		236	inline ev_tstamp
125	ev_time (void)	237	ev_time (void)
126	{	238	{
127	#if EV_USE_REALTIME	239	#if EV_USE_REALTIME
128	struct timespec ts;	240	struct timespec ts;
129	clock_gettime (CLOCK_REALTIME, &ts);	241	clock_gettime (CLOCK_REALTIME, &ts);
…		…
133	gettimeofday (&tv, 0);	245	gettimeofday (&tv, 0);
134	return tv.tv_sec + tv.tv_usec * 1e-6;	246	return tv.tv_sec + tv.tv_usec * 1e-6;
135	#endif	247	#endif
136	}	248	}
137		249
138	static ev_tstamp	250	inline ev_tstamp
139	get_clock (void)	251	get_clock (void)
140	{	252	{
141	#if EV_USE_MONOTONIC	253	#if EV_USE_MONOTONIC
142	if (expect_true (have_monotonic))	254	if (expect_true (have_monotonic))
143	{	255	{
…		…
148	#endif	260	#endif
149		261
150	return ev_time ();	262	return ev_time ();
151	}	263	}
152		264
		265	ev_tstamp
		266	ev_now (EV_P)
		267	{
		268	return rt_now;
		269	}
		270
153	#define array_roundsize(base,n) ((n) | 4 & ~3)	271	#define array_roundsize(base,n) ((n) | 4 & ~3)
154		272
155	#define array_needsize(base,cur,cnt,init) \	273	#define array_needsize(base,cur,cnt,init) \
156	if (expect_false ((cnt) > cur)) \	274	if (expect_false ((cnt) > cur)) \
157	{ \	275	{ \
158	int newcnt = cur; \	276	int newcnt = cur; \
159	do \	277	do \
160	{ \	278	{ \
161	newcnt = array_roundsize (base, newcnt << 1); \	279	newcnt = array_roundsize (base, newcnt << 1); \
162	} \	280	} \
163	while ((cnt) > newcnt); \	281	while ((cnt) > newcnt); \
164	\	282	\
165	base = realloc (base, sizeof (*base) * (newcnt)); \	283	base = ev_realloc (base, sizeof (*base) * (newcnt)); \
166	init (base + cur, newcnt - cur); \	284	init (base + cur, newcnt - cur); \
167	cur = newcnt; \	285	cur = newcnt; \
168	}	286	}
		287
		288	#define array_slim(stem) \
		289	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		290	{ \
		291	stem ## max = array_roundsize (stem ## cnt >> 1); \
		292	base = ev_realloc (base, sizeof (*base) * (stem ## max)); \
		293	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		294	}
		295
		296	#define array_free(stem, idx) \
		297	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
169		298
170	/*****************************************************************************/	299	/*****************************************************************************/
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		300
182	static void	301	static void
183	anfds_init (ANFD *base, int count)	302	anfds_init (ANFD *base, int count)
184	{	303	{
185	while (count--)	304	while (count--)
…		…
190		309
191	++base;	310	++base;
192	}	311	}
193	}	312	}
194		313
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	314	static void
205	event (W w, int events)	315	event (EV_P_ W w, int events)
206	{	316	{
207	if (w->pending)	317	if (w->pending)
208	{	318	{
209	pendings [ABSPRI (w)][w->pending - 1].events |= events;	319	pendings [ABSPRI (w)][w->pending - 1].events |= events;
210	return;	320	return;
…		…
215	pendings [ABSPRI (w)][w->pending - 1].w = w;	325	pendings [ABSPRI (w)][w->pending - 1].w = w;
216	pendings [ABSPRI (w)][w->pending - 1].events = events;	326	pendings [ABSPRI (w)][w->pending - 1].events = events;
217	}	327	}
218		328
219	static void	329	static void
220	queue_events (W *events, int eventcnt, int type)	330	queue_events (EV_P_ W *events, int eventcnt, int type)
221	{	331	{
222	int i;	332	int i;
223		333
224	for (i = 0; i < eventcnt; ++i)	334	for (i = 0; i < eventcnt; ++i)
225	event (events [i], type);	335	event (EV_A_ events [i], type);
226	}	336	}
227		337
228	static void	338	static void
229	fd_event (int fd, int events)	339	fd_event (EV_P_ int fd, int events)
230	{	340	{
231	ANFD *anfd = anfds + fd;	341	ANFD *anfd = anfds + fd;
232	struct ev_io *w;	342	struct ev_io *w;
233		343
234	for (w = anfd->head; w; w = w->next)	344	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
235	{	345	{
236	int ev = w->events & events;	346	int ev = w->events & events;
237		347
238	if (ev)	348	if (ev)
239	event ((W)w, ev);	349	event (EV_A_ (W)w, ev);
240	}	350	}
241	}	351	}
242		352
243	/*****************************************************************************/	353	/*****************************************************************************/
244		354
245	static int *fdchanges;
246	static int fdchangemax, fdchangecnt;
247
248	static void	355	static void
249	fd_reify (void)	356	fd_reify (EV_P)
250	{	357	{
251	int i;	358	int i;
252		359
253	for (i = 0; i < fdchangecnt; ++i)	360	for (i = 0; i < fdchangecnt; ++i)
254	{	361	{
…		…
256	ANFD *anfd = anfds + fd;	363	ANFD *anfd = anfds + fd;
257	struct ev_io *w;	364	struct ev_io *w;
258		365
259	int events = 0;	366	int events = 0;
260		367
261	for (w = anfd->head; w; w = w->next)	368	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
262	events |= w->events;	369	events |= w->events;
263		370
264	anfd->reify = 0;	371	anfd->reify = 0;
265		372
266	if (anfd->events != events)
267	{
268	method_modify (fd, anfd->events, events);	373	method_modify (EV_A_ fd, anfd->events, events);
269	anfd->events = events;	374	anfd->events = events;
270	}
271	}	375	}
272		376
273	fdchangecnt = 0;	377	fdchangecnt = 0;
274	}	378	}
275		379
276	static void	380	static void
277	fd_change (int fd)	381	fd_change (EV_P_ int fd)
278	{	382	{
279	if (anfds [fd].reify || fdchangecnt < 0)	383	if (anfds [fd].reify || fdchangecnt < 0)
280	return;	384	return;
281		385
282	anfds [fd].reify = 1;	386	anfds [fd].reify = 1;
…		…
285	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	389	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
286	fdchanges [fdchangecnt - 1] = fd;	390	fdchanges [fdchangecnt - 1] = fd;
287	}	391	}
288		392
289	static void	393	static void
290	fd_kill (int fd)	394	fd_kill (EV_P_ int fd)
291	{	395	{
292	struct ev_io *w;	396	struct ev_io *w;
293		397
294	printf ("killing fd %d\n", fd);//D
295	while ((w = anfds [fd].head))	398	while ((w = (struct ev_io *)anfds [fd].head))
296	{	399	{
297	ev_io_stop (w);	400	ev_io_stop (EV_A_ w);
298	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	401	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
299	}	402	}
300	}	403	}
301		404
302	/* called on EBADF to verify fds */	405	/* called on EBADF to verify fds */
303	static void	406	static void
304	fd_ebadf (void)	407	fd_ebadf (EV_P)
305	{	408	{
306	int fd;	409	int fd;
307		410
308	for (fd = 0; fd < anfdmax; ++fd)	411	for (fd = 0; fd < anfdmax; ++fd)
309	if (anfds [fd].events)	412	if (anfds [fd].events)
310	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	413	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
311	fd_kill (fd);	414	fd_kill (EV_A_ fd);
312	}	415	}
313		416
314	/* called on ENOMEM in select/poll to kill some fds and retry */	417	/* called on ENOMEM in select/poll to kill some fds and retry */
315	static void	418	static void
316	fd_enomem (void)	419	fd_enomem (EV_P)
317	{	420	{
318	int fd = anfdmax;	421	int fd;
319		422
320	while (fd--)	423	for (fd = anfdmax; fd--; )
321	if (anfds [fd].events)	424	if (anfds [fd].events)
322	{	425	{
323	close (fd);
324	fd_kill (fd);	426	fd_kill (EV_A_ fd);
325	return;	427	return;
326	}	428	}
327	}	429	}
328		430
		431	/* susually called after fork if method needs to re-arm all fds from scratch */
		432	static void
		433	fd_rearm_all (EV_P)
		434	{
		435	int fd;
		436
		437	/* this should be highly optimised to not do anything but set a flag */
		438	for (fd = 0; fd < anfdmax; ++fd)
		439	if (anfds [fd].events)
		440	{
		441	anfds [fd].events = 0;
		442	fd_change (EV_A_ fd);
		443	}
		444	}
		445
329	/*****************************************************************************/	446	/*****************************************************************************/
330		447
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	448	static void
338	upheap (WT *timers, int k)	449	upheap (WT *heap, int k)
339	{	450	{
340	WT w = timers [k];	451	WT w = heap [k];
341		452
342	while (k && timers [k >> 1]->at > w->at)	453	while (k && heap [k >> 1]->at > w->at)
343	{	454	{
344	timers [k] = timers [k >> 1];	455	heap [k] = heap [k >> 1];
345	timers [k]->active = k + 1;	456	((W)heap [k])->active = k + 1;
346	k >>= 1;	457	k >>= 1;
347	}	458	}
348		459
349	timers [k] = w;	460	heap [k] = w;
350	timers [k]->active = k + 1;	461	((W)heap [k])->active = k + 1;
351		462
352	}	463	}
353		464
354	static void	465	static void
355	downheap (WT *timers, int N, int k)	466	downheap (WT *heap, int N, int k)
356	{	467	{
357	WT w = timers [k];	468	WT w = heap [k];
358		469
359	while (k < (N >> 1))	470	while (k < (N >> 1))
360	{	471	{
361	int j = k << 1;	472	int j = k << 1;
362		473
363	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	474	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
364	++j;	475	++j;
365		476
366	if (w->at <= timers [j]->at)	477	if (w->at <= heap [j]->at)
367	break;	478	break;
368		479
369	timers [k] = timers [j];	480	heap [k] = heap [j];
370	timers [k]->active = k + 1;	481	((W)heap [k])->active = k + 1;
371	k = j;	482	k = j;
372	}	483	}
373		484
374	timers [k] = w;	485	heap [k] = w;
375	timers [k]->active = k + 1;	486	((W)heap [k])->active = k + 1;
376	}	487	}
377		488
378	/*****************************************************************************/	489	/*****************************************************************************/
379		490
380	typedef struct	491	typedef struct
381	{	492	{
382	struct ev_signal *head;	493	WL head;
383	sig_atomic_t volatile gotsig;	494	sig_atomic_t volatile gotsig;
384	} ANSIG;	495	} ANSIG;
385		496
386	static ANSIG *signals;	497	static ANSIG *signals;
387	static int signalmax;	498	static int signalmax;
…		…
403	}	514	}
404		515
405	static void	516	static void
406	sighandler (int signum)	517	sighandler (int signum)
407	{	518	{
		519	#if WIN32
		520	signal (signum, sighandler);
		521	#endif
		522
408	signals [signum - 1].gotsig = 1;	523	signals [signum - 1].gotsig = 1;
409		524
410	if (!gotsig)	525	if (!gotsig)
411	{	526	{
		527	int old_errno = errno;
412	gotsig = 1;	528	gotsig = 1;
413	write (sigpipe [1], &signum, 1);	529	write (sigpipe [1], &signum, 1);
		530	errno = old_errno;
414	}	531	}
415	}	532	}
416		533
417	static void	534	static void
418	sigcb (struct ev_io *iow, int revents)	535	sigcb (EV_P_ struct ev_io *iow, int revents)
419	{	536	{
420	struct ev_signal *w;	537	WL w;
421	int signum;	538	int signum;
422		539
423	read (sigpipe [0], &revents, 1);	540	read (sigpipe [0], &revents, 1);
424	gotsig = 0;	541	gotsig = 0;
425		542
…		…
427	if (signals [signum].gotsig)	544	if (signals [signum].gotsig)
428	{	545	{
429	signals [signum].gotsig = 0;	546	signals [signum].gotsig = 0;
430		547
431	for (w = signals [signum].head; w; w = w->next)	548	for (w = signals [signum].head; w; w = w->next)
432	event ((W)w, EV_SIGNAL);	549	event (EV_A_ (W)w, EV_SIGNAL);
433	}	550	}
434	}	551	}
435		552
436	static void	553	static void
437	siginit (void)	554	siginit (EV_P)
438	{	555	{
		556	#ifndef WIN32
439	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	557	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
440	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	558	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
441		559
442	/* rather than sort out wether we really need nb, set it */	560	/* rather than sort out wether we really need nb, set it */
443	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	561	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
444	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	562	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		563	#endif
445		564
446	ev_io_set (&sigev, sigpipe [0], EV_READ);	565	ev_io_set (&sigev, sigpipe [0], EV_READ);
447	ev_io_start (&sigev);	566	ev_io_start (EV_A_ &sigev);
		567	ev_unref (EV_A); /* child watcher should not keep loop alive */
448	}	568	}
449		569
450	/*****************************************************************************/	570	/*****************************************************************************/
451		571
452	static struct ev_idle **idles;	572	#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		573
463	static struct ev_child *childs [PID_HASHSIZE];	574	static struct ev_child *childs [PID_HASHSIZE];
464	static struct ev_signal childev;	575	static struct ev_signal childev;
465		576
466	#ifndef WCONTINUED	577	#ifndef WCONTINUED
467	# define WCONTINUED 0	578	# define WCONTINUED 0
468	#endif	579	#endif
469		580
470	static void	581	static void
471	childcb (struct ev_signal *sw, int revents)	582	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
472	{	583	{
473	struct ev_child *w;	584	struct ev_child *w;
		585
		586	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		587	if (w->pid == pid || !w->pid)
		588	{
		589	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		590	w->rpid = pid;
		591	w->rstatus = status;
		592	event (EV_A_ (W)w, EV_CHILD);
		593	}
		594	}
		595
		596	static void
		597	childcb (EV_P_ struct ev_signal *sw, int revents)
		598	{
474	int pid, status;	599	int pid, status;
475		600
476	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	601	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
477	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	602	{
478	if (w->pid == pid || !w->pid)	603	/* make sure we are called again until all childs have been reaped */
479	{	604	event (EV_A_ (W)sw, EV_SIGNAL);
480	w->status = status;	605
481	event ((W)w, EV_CHILD);	606	child_reap (EV_A_ sw, pid, pid, status);
482	}	607	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		608	}
483	}	609	}
		610
		611	#endif
484		612
485	/*****************************************************************************/	613	/*****************************************************************************/
486		614
		615	#if EV_USE_KQUEUE
		616	# include "ev_kqueue.c"
		617	#endif
487	#if EV_USE_EPOLL	618	#if EV_USE_EPOLL
488	# include "ev_epoll.c"	619	# include "ev_epoll.c"
489	#endif	620	#endif
490	#if EV_USE_POLL	621	#if EV_USE_POLL
491	# include "ev_poll.c"	622	# include "ev_poll.c"
…		…
504	ev_version_minor (void)	635	ev_version_minor (void)
505	{	636	{
506	return EV_VERSION_MINOR;	637	return EV_VERSION_MINOR;
507	}	638	}
508		639
509	/* return true if we are running with elevated privileges and ignore env variables */	640	/* return true if we are running with elevated privileges and should ignore env variables */
510	static int	641	static int
511	enable_secure ()	642	enable_secure (void)
512	{	643	{
		644	#ifdef WIN32
		645	return 0;
		646	#else
513	return getuid () != geteuid ()	647	return getuid () != geteuid ()
514	|| getgid () != getegid ();	648	|| getgid () != getegid ();
		649	#endif
515	}	650	}
516		651
517	int ev_init (int methods)	652	int
		653	ev_method (EV_P)
518	{	654	{
		655	return method;
		656	}
		657
		658	static void
		659	loop_init (EV_P_ int methods)
		660	{
519	if (!ev_method)	661	if (!method)
520	{	662	{
521	#if EV_USE_MONOTONIC	663	#if EV_USE_MONOTONIC
522	{	664	{
523	struct timespec ts;	665	struct timespec ts;
524	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	666	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
525	have_monotonic = 1;	667	have_monotonic = 1;
526	}	668	}
527	#endif	669	#endif
528		670
529	ev_now = ev_time ();	671	rt_now = ev_time ();
530	now = get_clock ();	672	mn_now = get_clock ();
531	now_floor = now;	673	now_floor = mn_now;
532	diff = ev_now - now;	674	rtmn_diff = rt_now - mn_now;
533
534	if (pipe (sigpipe))
535	return 0;
536		675
537	if (methods == EVMETHOD_AUTO)	676	if (methods == EVMETHOD_AUTO)
538	if (!enable_secure () && getenv ("LIBEV_METHODS"))	677	if (!enable_secure () && getenv ("LIBEV_METHODS"))
539	methods = atoi (getenv ("LIBEV_METHODS"));	678	methods = atoi (getenv ("LIBEV_METHODS"));
540	else	679	else
541	methods = EVMETHOD_ANY;	680	methods = EVMETHOD_ANY;
542		681
543	ev_method = 0;	682	method = 0;
		683	#if EV_USE_WIN32
		684	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		685	#endif
		686	#if EV_USE_KQUEUE
		687	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		688	#endif
544	#if EV_USE_EPOLL	689	#if EV_USE_EPOLL
545	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	690	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
546	#endif	691	#endif
547	#if EV_USE_POLL	692	#if EV_USE_POLL
548	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	693	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
549	#endif	694	#endif
550	#if EV_USE_SELECT	695	#if EV_USE_SELECT
551	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	696	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
552	#endif	697	#endif
		698	}
		699	}
553		700
		701	void
		702	loop_destroy (EV_P)
		703	{
		704	int i;
		705
		706	#if EV_USE_WIN32
		707	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		708	#endif
		709	#if EV_USE_KQUEUE
		710	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		711	#endif
		712	#if EV_USE_EPOLL
		713	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		714	#endif
		715	#if EV_USE_POLL
		716	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		717	#endif
		718	#if EV_USE_SELECT
		719	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		720	#endif
		721
		722	for (i = NUMPRI; i--; )
		723	array_free (pending, [i]);
		724
		725	array_free (fdchange, );
		726	array_free (timer, );
		727	array_free (periodic, );
		728	array_free (idle, );
		729	array_free (prepare, );
		730	array_free (check, );
		731
		732	method = 0;
		733	/*TODO*/
		734	}
		735
		736	void
		737	loop_fork (EV_P)
		738	{
		739	/*TODO*/
		740	#if EV_USE_EPOLL
		741	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		742	#endif
		743	#if EV_USE_KQUEUE
		744	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		745	#endif
		746	}
		747
		748	#if EV_MULTIPLICITY
		749	struct ev_loop *
		750	ev_loop_new (int methods)
		751	{
		752	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		753
		754	memset (loop, 0, sizeof (struct ev_loop));
		755
		756	loop_init (EV_A_ methods);
		757
		758	if (ev_method (EV_A))
		759	return loop;
		760
		761	return 0;
		762	}
		763
		764	void
		765	ev_loop_destroy (EV_P)
		766	{
		767	loop_destroy (EV_A);
		768	ev_free (loop);
		769	}
		770
		771	void
		772	ev_loop_fork (EV_P)
		773	{
		774	loop_fork (EV_A);
		775	}
		776
		777	#endif
		778
		779	#if EV_MULTIPLICITY
		780	struct ev_loop default_loop_struct;
		781	static struct ev_loop *default_loop;
		782
		783	struct ev_loop *
		784	#else
		785	static int default_loop;
		786
		787	int
		788	#endif
		789	ev_default_loop (int methods)
		790	{
		791	if (sigpipe [0] == sigpipe [1])
		792	if (pipe (sigpipe))
		793	return 0;
		794
		795	if (!default_loop)
		796	{
		797	#if EV_MULTIPLICITY
		798	struct ev_loop *loop = default_loop = &default_loop_struct;
		799	#else
		800	default_loop = 1;
		801	#endif
		802
		803	loop_init (EV_A_ methods);
		804
554	if (ev_method)	805	if (ev_method (EV_A))
555	{	806	{
556	ev_watcher_init (&sigev, sigcb);	807	ev_watcher_init (&sigev, sigcb);
		808	ev_set_priority (&sigev, EV_MAXPRI);
557	siginit ();	809	siginit (EV_A);
558		810
		811	#ifndef WIN32
559	ev_signal_init (&childev, childcb, SIGCHLD);	812	ev_signal_init (&childev, childcb, SIGCHLD);
		813	ev_set_priority (&childev, EV_MAXPRI);
560	ev_signal_start (&childev);	814	ev_signal_start (EV_A_ &childev);
		815	ev_unref (EV_A); /* child watcher should not keep loop alive */
		816	#endif
561	}	817	}
		818	else
		819	default_loop = 0;
562	}	820	}
563		821
564	return ev_method;	822	return default_loop;
565	}	823	}
566		824
567	/*****************************************************************************/
568
569	void	825	void
570	ev_fork_prepare (void)	826	ev_default_destroy (void)
571	{	827	{
572	/* nop */	828	#if EV_MULTIPLICITY
573	}	829	struct ev_loop *loop = default_loop;
574
575	void
576	ev_fork_parent (void)
577	{
578	/* nop */
579	}
580
581	void
582	ev_fork_child (void)
583	{
584	#if EV_USE_EPOLL
585	if (ev_method == EVMETHOD_EPOLL)
586	epoll_postfork_child ();
587	#endif	830	#endif
588		831
		832	ev_ref (EV_A); /* child watcher */
		833	ev_signal_stop (EV_A_ &childev);
		834
		835	ev_ref (EV_A); /* signal watcher */
589	ev_io_stop (&sigev);	836	ev_io_stop (EV_A_ &sigev);
		837
		838	close (sigpipe [0]); sigpipe [0] = 0;
		839	close (sigpipe [1]); sigpipe [1] = 0;
		840
		841	loop_destroy (EV_A);
		842	}
		843
		844	void
		845	ev_default_fork (void)
		846	{
		847	#if EV_MULTIPLICITY
		848	struct ev_loop *loop = default_loop;
		849	#endif
		850
		851	loop_fork (EV_A);
		852
		853	ev_io_stop (EV_A_ &sigev);
590	close (sigpipe [0]);	854	close (sigpipe [0]);
591	close (sigpipe [1]);	855	close (sigpipe [1]);
592	pipe (sigpipe);	856	pipe (sigpipe);
		857
		858	ev_ref (EV_A); /* signal watcher */
593	siginit ();	859	siginit (EV_A);
594	}	860	}
595		861
596	/*****************************************************************************/	862	/*****************************************************************************/
597		863
598	static void	864	static void
599	call_pending (void)	865	call_pending (EV_P)
600	{	866	{
601	int pri;	867	int pri;
602		868
603	for (pri = NUMPRI; pri--; )	869	for (pri = NUMPRI; pri--; )
604	while (pendingcnt [pri])	870	while (pendingcnt [pri])
…		…
606	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	872	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
607		873
608	if (p->w)	874	if (p->w)
609	{	875	{
610	p->w->pending = 0;	876	p->w->pending = 0;
611	p->w->cb (p->w, p->events);	877	p->w->cb (EV_A_ p->w, p->events);
612	}	878	}
613	}	879	}
614	}	880	}
615		881
616	static void	882	static void
617	timers_reify (void)	883	timers_reify (EV_P)
618	{	884	{
619	while (timercnt && timers [0]->at <= now)	885	while (timercnt && ((WT)timers [0])->at <= mn_now)
620	{	886	{
621	struct ev_timer *w = timers [0];	887	struct ev_timer *w = timers [0];
		888
		889	assert (("inactive timer on timer heap detected", ev_is_active (w)));
622		890
623	/* first reschedule or stop timer */	891	/* first reschedule or stop timer */
624	if (w->repeat)	892	if (w->repeat)
625	{	893	{
626	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	894	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
627	w->at = now + w->repeat;	895	((WT)w)->at = mn_now + w->repeat;
628	downheap ((WT *)timers, timercnt, 0);	896	downheap ((WT *)timers, timercnt, 0);
629	}	897	}
630	else	898	else
631	ev_timer_stop (w); /* nonrepeating: stop timer */	899	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
632		900
633	event ((W)w, EV_TIMEOUT);	901	event (EV_A_ (W)w, EV_TIMEOUT);
634	}	902	}
635	}	903	}
636		904
637	static void	905	static void
638	periodics_reify (void)	906	periodics_reify (EV_P)
639	{	907	{
640	while (periodiccnt && periodics [0]->at <= ev_now)	908	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
641	{	909	{
642	struct ev_periodic *w = periodics [0];	910	struct ev_periodic *w = periodics [0];
		911
		912	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
643		913
644	/* first reschedule or stop timer */	914	/* first reschedule or stop timer */
645	if (w->interval)	915	if (w->interval)
646	{	916	{
647	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	917	((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));	918	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
649	downheap ((WT *)periodics, periodiccnt, 0);	919	downheap ((WT *)periodics, periodiccnt, 0);
650	}	920	}
651	else	921	else
652	ev_periodic_stop (w); /* nonrepeating: stop timer */	922	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
653		923
654	event ((W)w, EV_PERIODIC);	924	event (EV_A_ (W)w, EV_PERIODIC);
655	}	925	}
656	}	926	}
657		927
658	static void	928	static void
659	periodics_reschedule (ev_tstamp diff)	929	periodics_reschedule (EV_P)
660	{	930	{
661	int i;	931	int i;
662		932
663	/* adjust periodics after time jump */	933	/* adjust periodics after time jump */
664	for (i = 0; i < periodiccnt; ++i)	934	for (i = 0; i < periodiccnt; ++i)
665	{	935	{
666	struct ev_periodic *w = periodics [i];	936	struct ev_periodic *w = periodics [i];
667		937
668	if (w->interval)	938	if (w->interval)
669	{	939	{
670	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	940	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
671		941
672	if (fabs (diff) >= 1e-4)	942	if (fabs (diff) >= 1e-4)
673	{	943	{
674	ev_periodic_stop (w);	944	ev_periodic_stop (EV_A_ w);
675	ev_periodic_start (w);	945	ev_periodic_start (EV_A_ w);
676		946
677	i = 0; /* restart loop, inefficient, but time jumps should be rare */	947	i = 0; /* restart loop, inefficient, but time jumps should be rare */
678	}	948	}
679	}	949	}
680	}	950	}
681	}	951	}
682		952
683	static int	953	inline int
684	time_update_monotonic (void)	954	time_update_monotonic (EV_P)
685	{	955	{
686	now = get_clock ();	956	mn_now = get_clock ();
687		957
688	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	958	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
689	{	959	{
690	ev_now = now + diff;	960	rt_now = rtmn_diff + mn_now;
691	return 0;	961	return 0;
692	}	962	}
693	else	963	else
694	{	964	{
695	now_floor = now;	965	now_floor = mn_now;
696	ev_now = ev_time ();	966	rt_now = ev_time ();
697	return 1;	967	return 1;
698	}	968	}
699	}	969	}
700		970
701	static void	971	static void
702	time_update (void)	972	time_update (EV_P)
703	{	973	{
704	int i;	974	int i;
705		975
706	#if EV_USE_MONOTONIC	976	#if EV_USE_MONOTONIC
707	if (expect_true (have_monotonic))	977	if (expect_true (have_monotonic))
708	{	978	{
709	if (time_update_monotonic ())	979	if (time_update_monotonic (EV_A))
710	{	980	{
711	ev_tstamp odiff = diff;	981	ev_tstamp odiff = rtmn_diff;
712		982
713	for (i = 4; --i; ) /* loop a few times, before making important decisions */	983	for (i = 4; --i; ) /* loop a few times, before making important decisions */
714	{	984	{
715	diff = ev_now - now;	985	rtmn_diff = rt_now - mn_now;
716		986
717	if (fabs (odiff - diff) < MIN_TIMEJUMP)	987	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
718	return; /* all is well */	988	return; /* all is well */
719		989
720	ev_now = ev_time ();	990	rt_now = ev_time ();
721	now = get_clock ();	991	mn_now = get_clock ();
722	now_floor = now;	992	now_floor = mn_now;
723	}	993	}
724		994
725	periodics_reschedule (diff - odiff);	995	periodics_reschedule (EV_A);
726	/* no timer adjustment, as the monotonic clock doesn't jump */	996	/* no timer adjustment, as the monotonic clock doesn't jump */
		997	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
727	}	998	}
728	}	999	}
729	else	1000	else
730	#endif	1001	#endif
731	{	1002	{
732	ev_now = ev_time ();	1003	rt_now = ev_time ();
733		1004
734	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1005	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
735	{	1006	{
736	periodics_reschedule (ev_now - now);	1007	periodics_reschedule (EV_A);
737		1008
738	/* adjust timers. this is easy, as the offset is the same for all */	1009	/* adjust timers. this is easy, as the offset is the same for all */
739	for (i = 0; i < timercnt; ++i)	1010	for (i = 0; i < timercnt; ++i)
740	timers [i]->at += diff;	1011	((WT)timers [i])->at += rt_now - mn_now;
741	}	1012	}
742		1013
743	now = ev_now;	1014	mn_now = rt_now;
744	}	1015	}
745	}	1016	}
746		1017
747	int ev_loop_done;	1018	void
		1019	ev_ref (EV_P)
		1020	{
		1021	++activecnt;
		1022	}
748		1023
		1024	void
		1025	ev_unref (EV_P)
		1026	{
		1027	--activecnt;
		1028	}
		1029
		1030	static int loop_done;
		1031
		1032	void
749	void ev_loop (int flags)	1033	ev_loop (EV_P_ int flags)
750	{	1034	{
751	double block;	1035	double block;
752	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1036	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
753		1037
754	do	1038	do
755	{	1039	{
756	/* queue check watchers (and execute them) */	1040	/* queue check watchers (and execute them) */
757	if (expect_false (preparecnt))	1041	if (expect_false (preparecnt))
758	{	1042	{
759	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1043	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
760	call_pending ();	1044	call_pending (EV_A);
761	}	1045	}
762		1046
763	/* update fd-related kernel structures */	1047	/* update fd-related kernel structures */
764	fd_reify ();	1048	fd_reify (EV_A);
765		1049
766	/* calculate blocking time */	1050	/* calculate blocking time */
767		1051
768	/* we only need this for !monotonic clockor timers, but as we basically	1052	/* we only need this for !monotonic clockor timers, but as we basically
769	always have timers, we just calculate it always */	1053	always have timers, we just calculate it always */
770	#if EV_USE_MONOTONIC	1054	#if EV_USE_MONOTONIC
771	if (expect_true (have_monotonic))	1055	if (expect_true (have_monotonic))
772	time_update_monotonic ();	1056	time_update_monotonic (EV_A);
773	else	1057	else
774	#endif	1058	#endif
775	{	1059	{
776	ev_now = ev_time ();	1060	rt_now = ev_time ();
777	now = ev_now;	1061	mn_now = rt_now;
778	}	1062	}
779		1063
780	if (flags & EVLOOP_NONBLOCK || idlecnt)	1064	if (flags & EVLOOP_NONBLOCK || idlecnt)
781	block = 0.;	1065	block = 0.;
782	else	1066	else
783	{	1067	{
784	block = MAX_BLOCKTIME;	1068	block = MAX_BLOCKTIME;
785		1069
786	if (timercnt)	1070	if (timercnt)
787	{	1071	{
788	ev_tstamp to = timers [0]->at - now + method_fudge;	1072	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
789	if (block > to) block = to;	1073	if (block > to) block = to;
790	}	1074	}
791		1075
792	if (periodiccnt)	1076	if (periodiccnt)
793	{	1077	{
794	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1078	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
795	if (block > to) block = to;	1079	if (block > to) block = to;
796	}	1080	}
797		1081
798	if (block < 0.) block = 0.;	1082	if (block < 0.) block = 0.;
799	}	1083	}
800		1084
801	method_poll (block);	1085	method_poll (EV_A_ block);
802		1086
803	/* update ev_now, do magic */	1087	/* update rt_now, do magic */
804	time_update ();	1088	time_update (EV_A);
805		1089
806	/* queue pending timers and reschedule them */	1090	/* queue pending timers and reschedule them */
807	timers_reify (); /* relative timers called last */	1091	timers_reify (EV_A); /* relative timers called last */
808	periodics_reify (); /* absolute timers called first */	1092	periodics_reify (EV_A); /* absolute timers called first */
809		1093
810	/* queue idle watchers unless io or timers are pending */	1094	/* queue idle watchers unless io or timers are pending */
811	if (!pendingcnt)	1095	if (!pendingcnt)
812	queue_events ((W *)idles, idlecnt, EV_IDLE);	1096	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
813		1097
814	/* queue check watchers, to be executed first */	1098	/* queue check watchers, to be executed first */
815	if (checkcnt)	1099	if (checkcnt)
816	queue_events ((W *)checks, checkcnt, EV_CHECK);	1100	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
817		1101
818	call_pending ();	1102	call_pending (EV_A);
819	}	1103	}
820	while (!ev_loop_done);	1104	while (activecnt && !loop_done);
821		1105
822	if (ev_loop_done != 2)	1106	if (loop_done != 2)
823	ev_loop_done = 0;	1107	loop_done = 0;
		1108	}
		1109
		1110	void
		1111	ev_unloop (EV_P_ int how)
		1112	{
		1113	loop_done = how;
824	}	1114	}
825		1115
826	/*****************************************************************************/	1116	/*****************************************************************************/
827		1117
828	static void	1118	inline void
829	wlist_add (WL *head, WL elem)	1119	wlist_add (WL *head, WL elem)
830	{	1120	{
831	elem->next = *head;	1121	elem->next = *head;
832	*head = elem;	1122	*head = elem;
833	}	1123	}
834		1124
835	static void	1125	inline void
836	wlist_del (WL *head, WL elem)	1126	wlist_del (WL *head, WL elem)
837	{	1127	{
838	while (*head)	1128	while (*head)
839	{	1129	{
840	if (*head == elem)	1130	if (*head == elem)
…		…
845		1135
846	head = &(*head)->next;	1136	head = &(*head)->next;
847	}	1137	}
848	}	1138	}
849		1139
850	static void	1140	inline void
851	ev_clear_pending (W w)	1141	ev_clear_pending (EV_P_ W w)
852	{	1142	{
853	if (w->pending)	1143	if (w->pending)
854	{	1144	{
855	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1145	pendings [ABSPRI (w)][w->pending - 1].w = 0;
856	w->pending = 0;	1146	w->pending = 0;
857	}	1147	}
858	}	1148	}
859		1149
860	static void	1150	inline void
861	ev_start (W w, int active)	1151	ev_start (EV_P_ W w, int active)
862	{	1152	{
863	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1153	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
864	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1154	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
865		1155
866	w->active = active;	1156	w->active = active;
		1157	ev_ref (EV_A);
867	}	1158	}
868		1159
869	static void	1160	inline void
870	ev_stop (W w)	1161	ev_stop (EV_P_ W w)
871	{	1162	{
		1163	ev_unref (EV_A);
872	w->active = 0;	1164	w->active = 0;
873	}	1165	}
874		1166
875	/*****************************************************************************/	1167	/*****************************************************************************/
876		1168
877	void	1169	void
878	ev_io_start (struct ev_io *w)	1170	ev_io_start (EV_P_ struct ev_io *w)
879	{	1171	{
880	int fd = w->fd;	1172	int fd = w->fd;
881		1173
882	if (ev_is_active (w))	1174	if (ev_is_active (w))
883	return;	1175	return;
884		1176
885	assert (("ev_io_start called with negative fd", fd >= 0));	1177	assert (("ev_io_start called with negative fd", fd >= 0));
886		1178
887	ev_start ((W)w, 1);	1179	ev_start (EV_A_ (W)w, 1);
888	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1180	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
889	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1181	wlist_add ((WL *)&anfds[fd].head, (WL)w);
890		1182
891	fd_change (fd);	1183	fd_change (EV_A_ fd);
892	}	1184	}
893		1185
894	void	1186	void
895	ev_io_stop (struct ev_io *w)	1187	ev_io_stop (EV_P_ struct ev_io *w)
896	{	1188	{
897	ev_clear_pending ((W)w);	1189	ev_clear_pending (EV_A_ (W)w);
898	if (!ev_is_active (w))	1190	if (!ev_is_active (w))
899	return;	1191	return;
900		1192
901	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1193	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
902	ev_stop ((W)w);	1194	ev_stop (EV_A_ (W)w);
903		1195
904	fd_change (w->fd);	1196	fd_change (EV_A_ w->fd);
905	}	1197	}
906		1198
907	void	1199	void
908	ev_timer_start (struct ev_timer *w)	1200	ev_timer_start (EV_P_ struct ev_timer *w)
909	{	1201	{
910	if (ev_is_active (w))	1202	if (ev_is_active (w))
911	return;	1203	return;
912		1204
913	w->at += now;	1205	((WT)w)->at += mn_now;
914		1206
915	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1207	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
916		1208
917	ev_start ((W)w, ++timercnt);	1209	ev_start (EV_A_ (W)w, ++timercnt);
918	array_needsize (timers, timermax, timercnt, );	1210	array_needsize (timers, timermax, timercnt, );
919	timers [timercnt - 1] = w;	1211	timers [timercnt - 1] = w;
920	upheap ((WT *)timers, timercnt - 1);	1212	upheap ((WT *)timers, timercnt - 1);
921	}
922		1213
		1214	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1215	}
		1216
923	void	1217	void
924	ev_timer_stop (struct ev_timer *w)	1218	ev_timer_stop (EV_P_ struct ev_timer *w)
925	{	1219	{
926	ev_clear_pending ((W)w);	1220	ev_clear_pending (EV_A_ (W)w);
927	if (!ev_is_active (w))	1221	if (!ev_is_active (w))
928	return;	1222	return;
929		1223
		1224	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1225
930	if (w->active < timercnt--)	1226	if (((W)w)->active < timercnt--)
931	{	1227	{
932	timers [w->active - 1] = timers [timercnt];	1228	timers [((W)w)->active - 1] = timers [timercnt];
933	downheap ((WT *)timers, timercnt, w->active - 1);	1229	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
934	}	1230	}
935		1231
936	w->at = w->repeat;	1232	((WT)w)->at = w->repeat;
937		1233
938	ev_stop ((W)w);	1234	ev_stop (EV_A_ (W)w);
939	}	1235	}
940		1236
941	void	1237	void
942	ev_timer_again (struct ev_timer *w)	1238	ev_timer_again (EV_P_ struct ev_timer *w)
943	{	1239	{
944	if (ev_is_active (w))	1240	if (ev_is_active (w))
945	{	1241	{
946	if (w->repeat)	1242	if (w->repeat)
947	{	1243	{
948	w->at = now + w->repeat;	1244	((WT)w)->at = mn_now + w->repeat;
949	downheap ((WT *)timers, timercnt, w->active - 1);	1245	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
950	}	1246	}
951	else	1247	else
952	ev_timer_stop (w);	1248	ev_timer_stop (EV_A_ w);
953	}	1249	}
954	else if (w->repeat)	1250	else if (w->repeat)
955	ev_timer_start (w);	1251	ev_timer_start (EV_A_ w);
956	}	1252	}
957		1253
958	void	1254	void
959	ev_periodic_start (struct ev_periodic *w)	1255	ev_periodic_start (EV_P_ struct ev_periodic *w)
960	{	1256	{
961	if (ev_is_active (w))	1257	if (ev_is_active (w))
962	return;	1258	return;
963		1259
964	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1260	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
965		1261
966	/* this formula differs from the one in periodic_reify because we do not always round up */	1262	/* this formula differs from the one in periodic_reify because we do not always round up */
967	if (w->interval)	1263	if (w->interval)
968	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1264	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
969		1265
970	ev_start ((W)w, ++periodiccnt);	1266	ev_start (EV_A_ (W)w, ++periodiccnt);
971	array_needsize (periodics, periodicmax, periodiccnt, );	1267	array_needsize (periodics, periodicmax, periodiccnt, );
972	periodics [periodiccnt - 1] = w;	1268	periodics [periodiccnt - 1] = w;
973	upheap ((WT *)periodics, periodiccnt - 1);	1269	upheap ((WT *)periodics, periodiccnt - 1);
974	}
975		1270
		1271	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1272	}
		1273
976	void	1274	void
977	ev_periodic_stop (struct ev_periodic *w)	1275	ev_periodic_stop (EV_P_ struct ev_periodic *w)
978	{	1276	{
979	ev_clear_pending ((W)w);	1277	ev_clear_pending (EV_A_ (W)w);
980	if (!ev_is_active (w))	1278	if (!ev_is_active (w))
981	return;	1279	return;
982		1280
		1281	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1282
983	if (w->active < periodiccnt--)	1283	if (((W)w)->active < periodiccnt--)
984	{	1284	{
985	periodics [w->active - 1] = periodics [periodiccnt];	1285	periodics [((W)w)->active - 1] = periodics [periodiccnt];
986	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1286	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
987	}	1287	}
988		1288
989	ev_stop ((W)w);	1289	ev_stop (EV_A_ (W)w);
990	}	1290	}
991		1291
992	void	1292	void
993	ev_signal_start (struct ev_signal *w)	1293	ev_idle_start (EV_P_ struct ev_idle *w)
994	{	1294	{
995	if (ev_is_active (w))	1295	if (ev_is_active (w))
996	return;	1296	return;
997		1297
		1298	ev_start (EV_A_ (W)w, ++idlecnt);
		1299	array_needsize (idles, idlemax, idlecnt, );
		1300	idles [idlecnt - 1] = w;
		1301	}
		1302
		1303	void
		1304	ev_idle_stop (EV_P_ struct ev_idle *w)
		1305	{
		1306	ev_clear_pending (EV_A_ (W)w);
		1307	if (ev_is_active (w))
		1308	return;
		1309
		1310	idles [((W)w)->active - 1] = idles [--idlecnt];
		1311	ev_stop (EV_A_ (W)w);
		1312	}
		1313
		1314	void
		1315	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1316	{
		1317	if (ev_is_active (w))
		1318	return;
		1319
		1320	ev_start (EV_A_ (W)w, ++preparecnt);
		1321	array_needsize (prepares, preparemax, preparecnt, );
		1322	prepares [preparecnt - 1] = w;
		1323	}
		1324
		1325	void
		1326	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1327	{
		1328	ev_clear_pending (EV_A_ (W)w);
		1329	if (ev_is_active (w))
		1330	return;
		1331
		1332	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1333	ev_stop (EV_A_ (W)w);
		1334	}
		1335
		1336	void
		1337	ev_check_start (EV_P_ struct ev_check *w)
		1338	{
		1339	if (ev_is_active (w))
		1340	return;
		1341
		1342	ev_start (EV_A_ (W)w, ++checkcnt);
		1343	array_needsize (checks, checkmax, checkcnt, );
		1344	checks [checkcnt - 1] = w;
		1345	}
		1346
		1347	void
		1348	ev_check_stop (EV_P_ struct ev_check *w)
		1349	{
		1350	ev_clear_pending (EV_A_ (W)w);
		1351	if (ev_is_active (w))
		1352	return;
		1353
		1354	checks [((W)w)->active - 1] = checks [--checkcnt];
		1355	ev_stop (EV_A_ (W)w);
		1356	}
		1357
		1358	#ifndef SA_RESTART
		1359	# define SA_RESTART 0
		1360	#endif
		1361
		1362	void
		1363	ev_signal_start (EV_P_ struct ev_signal *w)
		1364	{
		1365	#if EV_MULTIPLICITY
		1366	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1367	#endif
		1368	if (ev_is_active (w))
		1369	return;
		1370
998	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1371	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
999		1372
1000	ev_start ((W)w, 1);	1373	ev_start (EV_A_ (W)w, 1);
1001	array_needsize (signals, signalmax, w->signum, signals_init);	1374	array_needsize (signals, signalmax, w->signum, signals_init);
1002	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1375	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1003		1376
1004	if (!w->next)	1377	if (!((WL)w)->next)
1005	{	1378	{
		1379	#if WIN32
		1380	signal (w->signum, sighandler);
		1381	#else
1006	struct sigaction sa;	1382	struct sigaction sa;
1007	sa.sa_handler = sighandler;	1383	sa.sa_handler = sighandler;
1008	sigfillset (&sa.sa_mask);	1384	sigfillset (&sa.sa_mask);
1009	sa.sa_flags = 0;	1385	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1010	sigaction (w->signum, &sa, 0);	1386	sigaction (w->signum, &sa, 0);
		1387	#endif
1011	}	1388	}
1012	}	1389	}
1013		1390
1014	void	1391	void
1015	ev_signal_stop (struct ev_signal *w)	1392	ev_signal_stop (EV_P_ struct ev_signal *w)
1016	{	1393	{
1017	ev_clear_pending ((W)w);	1394	ev_clear_pending (EV_A_ (W)w);
1018	if (!ev_is_active (w))	1395	if (!ev_is_active (w))
1019	return;	1396	return;
1020		1397
1021	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1398	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1022	ev_stop ((W)w);	1399	ev_stop (EV_A_ (W)w);
1023		1400
1024	if (!signals [w->signum - 1].head)	1401	if (!signals [w->signum - 1].head)
1025	signal (w->signum, SIG_DFL);	1402	signal (w->signum, SIG_DFL);
1026	}	1403	}
1027		1404
1028	void	1405	void
1029	ev_idle_start (struct ev_idle *w)	1406	ev_child_start (EV_P_ struct ev_child *w)
1030	{	1407	{
		1408	#if EV_MULTIPLICITY
		1409	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1410	#endif
1031	if (ev_is_active (w))	1411	if (ev_is_active (w))
1032	return;	1412	return;
1033		1413
1034	ev_start ((W)w, ++idlecnt);	1414	ev_start (EV_A_ (W)w, 1);
1035	array_needsize (idles, idlemax, idlecnt, );	1415	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1036	idles [idlecnt - 1] = w;
1037	}	1416	}
1038		1417
1039	void	1418	void
1040	ev_idle_stop (struct ev_idle *w)	1419	ev_child_stop (EV_P_ struct ev_child *w)
1041	{	1420	{
1042	ev_clear_pending ((W)w);	1421	ev_clear_pending (EV_A_ (W)w);
1043	if (ev_is_active (w))	1422	if (ev_is_active (w))
1044	return;	1423	return;
1045		1424
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);	1425	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1112	ev_stop ((W)w);	1426	ev_stop (EV_A_ (W)w);
1113	}	1427	}
1114		1428
1115	/*****************************************************************************/	1429	/*****************************************************************************/
1116		1430
1117	struct ev_once	1431	struct ev_once
…		…
1121	void (*cb)(int revents, void *arg);	1435	void (*cb)(int revents, void *arg);
1122	void *arg;	1436	void *arg;
1123	};	1437	};
1124		1438
1125	static void	1439	static void
1126	once_cb (struct ev_once *once, int revents)	1440	once_cb (EV_P_ struct ev_once *once, int revents)
1127	{	1441	{
1128	void (*cb)(int revents, void *arg) = once->cb;	1442	void (*cb)(int revents, void *arg) = once->cb;
1129	void *arg = once->arg;	1443	void *arg = once->arg;
1130		1444
1131	ev_io_stop (&once->io);	1445	ev_io_stop (EV_A_ &once->io);
1132	ev_timer_stop (&once->to);	1446	ev_timer_stop (EV_A_ &once->to);
1133	free (once);	1447	ev_free (once);
1134		1448
1135	cb (revents, arg);	1449	cb (revents, arg);
1136	}	1450	}
1137		1451
1138	static void	1452	static void
1139	once_cb_io (struct ev_io *w, int revents)	1453	once_cb_io (EV_P_ struct ev_io *w, int revents)
1140	{	1454	{
1141	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1455	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1142	}	1456	}
1143		1457
1144	static void	1458	static void
1145	once_cb_to (struct ev_timer *w, int revents)	1459	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1146	{	1460	{
1147	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1461	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1148	}	1462	}
1149		1463
1150	void	1464	void
1151	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1465	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1152	{	1466	{
1153	struct ev_once *once = malloc (sizeof (struct ev_once));	1467	struct ev_once *once = ev_malloc (sizeof (struct ev_once));
1154		1468
1155	if (!once)	1469	if (!once)
1156	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1470	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1157	else	1471	else
1158	{	1472	{
…		…
1161		1475
1162	ev_watcher_init (&once->io, once_cb_io);	1476	ev_watcher_init (&once->io, once_cb_io);
1163	if (fd >= 0)	1477	if (fd >= 0)
1164	{	1478	{
1165	ev_io_set (&once->io, fd, events);	1479	ev_io_set (&once->io, fd, events);
1166	ev_io_start (&once->io);	1480	ev_io_start (EV_A_ &once->io);
1167	}	1481	}
1168		1482
1169	ev_watcher_init (&once->to, once_cb_to);	1483	ev_watcher_init (&once->to, once_cb_to);
1170	if (timeout >= 0.)	1484	if (timeout >= 0.)
1171	{	1485	{
1172	ev_timer_set (&once->to, timeout, 0.);	1486	ev_timer_set (&once->to, timeout, 0.);
1173	ev_timer_start (&once->to);	1487	ev_timer_start (EV_A_ &once->to);
1174	}	1488	}
1175	}	1489	}
1176	}	1490	}
1177		1491
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

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines