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Comparing libev/ev.c (file contents):
Revision 1.49 by root, Sat Nov 3 16:16:58 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>
…		…
70		92
71	#ifndef EV_USE_KQUEUE	93	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	94	# define EV_USE_KQUEUE 0
73	#endif	95	#endif
74		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
		103	#endif
		104
75	#ifndef EV_USE_REALTIME	105	#ifndef EV_USE_REALTIME
76	# define EV_USE_REALTIME 1	106	# define EV_USE_REALTIME 1
77	#endif	107	#endif
78		108
79	/**/	109	/**/
…		…
113		143
114	typedef struct ev_watcher *W;	144	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	145	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	146	typedef struct ev_watcher_time *WT;
117		147
118	static ev_tstamp now_floor, now, diff; /* monotonic clock */	148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119	ev_tstamp ev_now;
120	int ev_method;
121		149
122	static int have_monotonic; /* runtime */	150	#if WIN32
123		151	/* note: the comment below could not be substantiated, but what would I care */
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	152	/* MSDN says this is required to handle SIGFPE */
125	static void (*method_modify)(int fd, int oev, int nev);	153	volatile double SIGFPE_REQ = 0.0f;
126	static void (*method_poll)(ev_tstamp timeout);	154	#endif
127		155
128	/*****************************************************************************/	156	/*****************************************************************************/
129		157
130	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
131	ev_time (void)	240	ev_time (void)
132	{	241	{
133	#if EV_USE_REALTIME	242	#if EV_USE_REALTIME
134	struct timespec ts;	243	struct timespec ts;
135	clock_gettime (CLOCK_REALTIME, &ts);	244	clock_gettime (CLOCK_REALTIME, &ts);
…		…
139	gettimeofday (&tv, 0);	248	gettimeofday (&tv, 0);
140	return tv.tv_sec + tv.tv_usec * 1e-6;	249	return tv.tv_sec + tv.tv_usec * 1e-6;
141	#endif	250	#endif
142	}	251	}
143		252
144	static ev_tstamp	253	inline ev_tstamp
145	get_clock (void)	254	get_clock (void)
146	{	255	{
147	#if EV_USE_MONOTONIC	256	#if EV_USE_MONOTONIC
148	if (expect_true (have_monotonic))	257	if (expect_true (have_monotonic))
149	{	258	{
…		…
154	#endif	263	#endif
155		264
156	return ev_time ();	265	return ev_time ();
157	}	266	}
158		267
		268	ev_tstamp
		269	ev_now (EV_P)
		270	{
		271	return rt_now;
		272	}
		273
159	#define array_roundsize(base,n) ((n) | 4 & ~3)	274	#define array_roundsize(base,n) ((n) | 4 & ~3)
160		275
161	#define array_needsize(base,cur,cnt,init) \	276	#define array_needsize(base,cur,cnt,init) \
162	if (expect_false ((cnt) > cur)) \	277	if (expect_false ((cnt) > cur)) \
163	{ \	278	{ \
164	int newcnt = cur; \	279	int newcnt = cur; \
165	do \	280	do \
166	{ \	281	{ \
167	newcnt = array_roundsize (base, newcnt << 1); \	282	newcnt = array_roundsize (base, newcnt << 1); \
168	} \	283	} \
169	while ((cnt) > newcnt); \	284	while ((cnt) > newcnt); \
170	\	285	\
171	base = realloc (base, sizeof (*base) * (newcnt)); \	286	base = ev_realloc (base, sizeof (*base) * (newcnt)); \
172	init (base + cur, newcnt - cur); \	287	init (base + cur, newcnt - cur); \
173	cur = newcnt; \	288	cur = newcnt; \
174	}	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;
175		301
176	/*****************************************************************************/	302	/*****************************************************************************/
177
178	typedef struct
179	{
180	struct ev_io *head;
181	unsigned char events;
182	unsigned char reify;
183	} ANFD;
184
185	static ANFD *anfds;
186	static int anfdmax;
187		303
188	static void	304	static void
189	anfds_init (ANFD *base, int count)	305	anfds_init (ANFD *base, int count)
190	{	306	{
191	while (count--)	307	while (count--)
…		…
196		312
197	++base;	313	++base;
198	}	314	}
199	}	315	}
200		316
201	typedef struct
202	{
203	W w;
204	int events;
205	} ANPENDING;
206
207	static ANPENDING *pendings [NUMPRI];
208	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
209
210	static void	317	static void
211	event (W w, int events)	318	event (EV_P_ W w, int events)
212	{	319	{
213	if (w->pending)	320	if (w->pending)
214	{	321	{
215	pendings [ABSPRI (w)][w->pending - 1].events |= events;	322	pendings [ABSPRI (w)][w->pending - 1].events |= events;
216	return;	323	return;
…		…
221	pendings [ABSPRI (w)][w->pending - 1].w = w;	328	pendings [ABSPRI (w)][w->pending - 1].w = w;
222	pendings [ABSPRI (w)][w->pending - 1].events = events;	329	pendings [ABSPRI (w)][w->pending - 1].events = events;
223	}	330	}
224		331
225	static void	332	static void
226	queue_events (W *events, int eventcnt, int type)	333	queue_events (EV_P_ W *events, int eventcnt, int type)
227	{	334	{
228	int i;	335	int i;
229		336
230	for (i = 0; i < eventcnt; ++i)	337	for (i = 0; i < eventcnt; ++i)
231	event (events [i], type);	338	event (EV_A_ events [i], type);
232	}	339	}
233		340
234	static void	341	static void
235	fd_event (int fd, int events)	342	fd_event (EV_P_ int fd, int events)
236	{	343	{
237	ANFD *anfd = anfds + fd;	344	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	345	struct ev_io *w;
239		346
240	for (w = anfd->head; w; w = w->next)	347	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
241	{	348	{
242	int ev = w->events & events;	349	int ev = w->events & events;
243		350
244	if (ev)	351	if (ev)
245	event ((W)w, ev);	352	event (EV_A_ (W)w, ev);
246	}	353	}
247	}	354	}
248		355
249	/*****************************************************************************/	356	/*****************************************************************************/
250		357
251	static int *fdchanges;
252	static int fdchangemax, fdchangecnt;
253
254	static void	358	static void
255	fd_reify (void)	359	fd_reify (EV_P)
256	{	360	{
257	int i;	361	int i;
258		362
259	for (i = 0; i < fdchangecnt; ++i)	363	for (i = 0; i < fdchangecnt; ++i)
260	{	364	{
…		…
262	ANFD *anfd = anfds + fd;	366	ANFD *anfd = anfds + fd;
263	struct ev_io *w;	367	struct ev_io *w;
264		368
265	int events = 0;	369	int events = 0;
266		370
267	for (w = anfd->head; w; w = w->next)	371	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
268	events |= w->events;	372	events |= w->events;
269		373
270	anfd->reify = 0;	374	anfd->reify = 0;
271		375
272	if (anfd->events != events)
273	{
274	method_modify (fd, anfd->events, events);	376	method_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	377	anfd->events = events;
276	}
277	}	378	}
278		379
279	fdchangecnt = 0;	380	fdchangecnt = 0;
280	}	381	}
281		382
282	static void	383	static void
283	fd_change (int fd)	384	fd_change (EV_P_ int fd)
284	{	385	{
285	if (anfds [fd].reify || fdchangecnt < 0)	386	if (anfds [fd].reify)
286	return;	387	return;
287		388
288	anfds [fd].reify = 1;	389	anfds [fd].reify = 1;
289		390
290	++fdchangecnt;	391	++fdchangecnt;
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	392	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
292	fdchanges [fdchangecnt - 1] = fd;	393	fdchanges [fdchangecnt - 1] = fd;
293	}	394	}
294		395
295	static void	396	static void
296	fd_kill (int fd)	397	fd_kill (EV_P_ int fd)
297	{	398	{
298	struct ev_io *w;	399	struct ev_io *w;
299		400
300	printf ("killing fd %d\n", fd);//D
301	while ((w = anfds [fd].head))	401	while ((w = (struct ev_io *)anfds [fd].head))
302	{	402	{
303	ev_io_stop (w);	403	ev_io_stop (EV_A_ w);
304	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	404	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
305	}	405	}
306	}	406	}
307		407
308	/* called on EBADF to verify fds */	408	/* called on EBADF to verify fds */
309	static void	409	static void
310	fd_ebadf (void)	410	fd_ebadf (EV_P)
311	{	411	{
312	int fd;	412	int fd;
313		413
314	for (fd = 0; fd < anfdmax; ++fd)	414	for (fd = 0; fd < anfdmax; ++fd)
315	if (anfds [fd].events)	415	if (anfds [fd].events)
316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	416	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
317	fd_kill (fd);	417	fd_kill (EV_A_ fd);
318	}	418	}
319		419
320	/* 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 */
321	static void	421	static void
322	fd_enomem (void)	422	fd_enomem (EV_P)
323	{	423	{
324	int fd = anfdmax;	424	int fd;
325		425
326	while (fd--)	426	for (fd = anfdmax; fd--; )
327	if (anfds [fd].events)	427	if (anfds [fd].events)
328	{	428	{
329	close (fd);
330	fd_kill (fd);	429	fd_kill (EV_A_ fd);
331	return;	430	return;
332	}	431	}
333	}	432	}
334		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
335	/*****************************************************************************/	449	/*****************************************************************************/
336		450
337	static struct ev_timer **timers;
338	static int timermax, timercnt;
339
340	static struct ev_periodic **periodics;
341	static int periodicmax, periodiccnt;
342
343	static void	451	static void
344	upheap (WT *timers, int k)	452	upheap (WT *heap, int k)
345	{	453	{
346	WT w = timers [k];	454	WT w = heap [k];
347		455
348	while (k && timers [k >> 1]->at > w->at)	456	while (k && heap [k >> 1]->at > w->at)
349	{	457	{
350	timers [k] = timers [k >> 1];	458	heap [k] = heap [k >> 1];
351	timers [k]->active = k + 1;	459	((W)heap [k])->active = k + 1;
352	k >>= 1;	460	k >>= 1;
353	}	461	}
354		462
355	timers [k] = w;	463	heap [k] = w;
356	timers [k]->active = k + 1;	464	((W)heap [k])->active = k + 1;
357		465
358	}	466	}
359		467
360	static void	468	static void
361	downheap (WT *timers, int N, int k)	469	downheap (WT *heap, int N, int k)
362	{	470	{
363	WT w = timers [k];	471	WT w = heap [k];
364		472
365	while (k < (N >> 1))	473	while (k < (N >> 1))
366	{	474	{
367	int j = k << 1;	475	int j = k << 1;
368		476
369	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	477	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
370	++j;	478	++j;
371		479
372	if (w->at <= timers [j]->at)	480	if (w->at <= heap [j]->at)
373	break;	481	break;
374		482
375	timers [k] = timers [j];	483	heap [k] = heap [j];
376	timers [k]->active = k + 1;	484	((W)heap [k])->active = k + 1;
377	k = j;	485	k = j;
378	}	486	}
379		487
380	timers [k] = w;	488	heap [k] = w;
381	timers [k]->active = k + 1;	489	((W)heap [k])->active = k + 1;
382	}	490	}
383		491
384	/*****************************************************************************/	492	/*****************************************************************************/
385		493
386	typedef struct	494	typedef struct
387	{	495	{
388	struct ev_signal *head;	496	WL head;
389	sig_atomic_t volatile gotsig;	497	sig_atomic_t volatile gotsig;
390	} ANSIG;	498	} ANSIG;
391		499
392	static ANSIG *signals;	500	static ANSIG *signals;
393	static int signalmax;	501	static int signalmax;
…		…
409	}	517	}
410		518
411	static void	519	static void
412	sighandler (int signum)	520	sighandler (int signum)
413	{	521	{
		522	#if WIN32
		523	signal (signum, sighandler);
		524	#endif
		525
414	signals [signum - 1].gotsig = 1;	526	signals [signum - 1].gotsig = 1;
415		527
416	if (!gotsig)	528	if (!gotsig)
417	{	529	{
418	int old_errno = errno;	530	int old_errno = errno;
…		…
421	errno = old_errno;	533	errno = old_errno;
422	}	534	}
423	}	535	}
424		536
425	static void	537	static void
426	sigcb (struct ev_io *iow, int revents)	538	sigcb (EV_P_ struct ev_io *iow, int revents)
427	{	539	{
428	struct ev_signal *w;	540	WL w;
429	int signum;	541	int signum;
430		542
431	read (sigpipe [0], &revents, 1);	543	read (sigpipe [0], &revents, 1);
432	gotsig = 0;	544	gotsig = 0;
433		545
…		…
435	if (signals [signum].gotsig)	547	if (signals [signum].gotsig)
436	{	548	{
437	signals [signum].gotsig = 0;	549	signals [signum].gotsig = 0;
438		550
439	for (w = signals [signum].head; w; w = w->next)	551	for (w = signals [signum].head; w; w = w->next)
440	event ((W)w, EV_SIGNAL);	552	event (EV_A_ (W)w, EV_SIGNAL);
441	}	553	}
442	}	554	}
443		555
444	static void	556	static void
445	siginit (void)	557	siginit (EV_P)
446	{	558	{
447	#ifndef WIN32	559	#ifndef WIN32
448	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	560	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
449	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	561	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
450		562
…		…
452	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	564	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
453	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	565	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
454	#endif	566	#endif
455		567
456	ev_io_set (&sigev, sigpipe [0], EV_READ);	568	ev_io_set (&sigev, sigpipe [0], EV_READ);
457	ev_io_start (&sigev);	569	ev_io_start (EV_A_ &sigev);
		570	ev_unref (EV_A); /* child watcher should not keep loop alive */
458	}	571	}
459		572
460	/*****************************************************************************/	573	/*****************************************************************************/
461		574
462	static struct ev_idle **idles;	575	#ifndef WIN32
463	static int idlemax, idlecnt;
464
465	static struct ev_prepare **prepares;
466	static int preparemax, preparecnt;
467
468	static struct ev_check **checks;
469	static int checkmax, checkcnt;
470
471	/*****************************************************************************/
472		576
473	static struct ev_child *childs [PID_HASHSIZE];	577	static struct ev_child *childs [PID_HASHSIZE];
474	static struct ev_signal childev;	578	static struct ev_signal childev;
475		579
476	#ifndef WIN32
477
478	#ifndef WCONTINUED	580	#ifndef WCONTINUED
479	# define WCONTINUED 0	581	# define WCONTINUED 0
480	#endif	582	#endif
481		583
482	static void	584	static void
483	child_reap (struct ev_signal *sw, int chain, int pid, int status)	585	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
484	{	586	{
485	struct ev_child *w;	587	struct ev_child *w;
486		588
487	for (w = childs [chain & (PID_HASHSIZE - 1)]; w; w = w->next)	589	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
488	if (w->pid == pid || !w->pid)	590	if (w->pid == pid || !w->pid)
489	{	591	{
490	w->priority = sw->priority; /* need to do it *now* */	592	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
491	w->rpid = pid;	593	w->rpid = pid;
492	w->rstatus = status;	594	w->rstatus = status;
493	printf ("rpid %p %d %d\n", w, pid, w->pid);//D
494	event ((W)w, EV_CHILD);	595	event (EV_A_ (W)w, EV_CHILD);
495	}	596	}
496	}	597	}
497		598
498	static void	599	static void
499	childcb (struct ev_signal *sw, int revents)	600	childcb (EV_P_ struct ev_signal *sw, int revents)
500	{	601	{
501	int pid, status;	602	int pid, status;
502		603
503	printf ("chld %x\n", revents);//D
504	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	604	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
505	{	605	{
506	/* make sure we are called again until all childs have been reaped */	606	/* make sure we are called again until all childs have been reaped */
507	event ((W)sw, EV_SIGNAL);	607	event (EV_A_ (W)sw, EV_SIGNAL);
508		608
509	child_reap (sw, pid, pid, status);	609	child_reap (EV_A_ sw, pid, pid, status);
510	child_reap (sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	610	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
511	}	611	}
512	}	612	}
513		613
514	#endif	614	#endif
515		615
…		…
540	return EV_VERSION_MINOR;	640	return EV_VERSION_MINOR;
541	}	641	}
542		642
543	/* return true if we are running with elevated privileges and should ignore env variables */	643	/* return true if we are running with elevated privileges and should ignore env variables */
544	static int	644	static int
545	enable_secure ()	645	enable_secure (void)
546	{	646	{
547	#ifdef WIN32	647	#ifdef WIN32
548	return 0;	648	return 0;
549	#else	649	#else
550	return getuid () != geteuid ()	650	return getuid () != geteuid ()
551	|| getgid () != getegid ();	651	|| getgid () != getegid ();
552	#endif	652	#endif
553	}	653	}
554		654
555	int ev_init (int methods)	655	int
		656	ev_method (EV_P)
556	{	657	{
		658	return method;
		659	}
		660
		661	static void
		662	loop_init (EV_P_ int methods)
		663	{
557	if (!ev_method)	664	if (!method)
558	{	665	{
559	#if EV_USE_MONOTONIC	666	#if EV_USE_MONOTONIC
560	{	667	{
561	struct timespec ts;	668	struct timespec ts;
562	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	669	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
563	have_monotonic = 1;	670	have_monotonic = 1;
564	}	671	}
565	#endif	672	#endif
566		673
567	ev_now = ev_time ();	674	rt_now = ev_time ();
568	now = get_clock ();	675	mn_now = get_clock ();
569	now_floor = now;	676	now_floor = mn_now;
570	diff = ev_now - now;	677	rtmn_diff = rt_now - mn_now;
571
572	if (pipe (sigpipe))
573	return 0;
574		678
575	if (methods == EVMETHOD_AUTO)	679	if (methods == EVMETHOD_AUTO)
576	if (!enable_secure () && getenv ("LIBEV_METHODS"))	680	if (!enable_secure () && getenv ("LIBEV_METHODS"))
577	methods = atoi (getenv ("LIBEV_METHODS"));	681	methods = atoi (getenv ("LIBEV_METHODS"));
578	else	682	else
579	methods = EVMETHOD_ANY;	683	methods = EVMETHOD_ANY;
580		684
581	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
582	#if EV_USE_KQUEUE	689	#if EV_USE_KQUEUE
583	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	690	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
584	#endif	691	#endif
585	#if EV_USE_EPOLL	692	#if EV_USE_EPOLL
586	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	693	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
587	#endif	694	#endif
588	#if EV_USE_POLL	695	#if EV_USE_POLL
589	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	696	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
590	#endif	697	#endif
591	#if EV_USE_SELECT	698	#if EV_USE_SELECT
592	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	699	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
593	#endif	700	#endif
594		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
595	if (ev_method)	826	if (ev_method (EV_A))
596	{	827	{
597	ev_watcher_init (&sigev, sigcb);
598	ev_set_priority (&sigev, EV_MAXPRI);
599	siginit ();	828	siginit (EV_A);
600		829
601	#ifndef WIN32	830	#ifndef WIN32
602	ev_signal_init (&childev, childcb, SIGCHLD);	831	ev_signal_init (&childev, childcb, SIGCHLD);
603	ev_set_priority (&childev, EV_MAXPRI);	832	ev_set_priority (&childev, EV_MAXPRI);
604	ev_signal_start (&childev);	833	ev_signal_start (EV_A_ &childev);
		834	ev_unref (EV_A); /* child watcher should not keep loop alive */
605	#endif	835	#endif
606	}	836	}
		837	else
		838	default_loop = 0;
607	}	839	}
608		840
609	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;
610	}	872	}
611		873
612	/*****************************************************************************/	874	/*****************************************************************************/
613		875
614	void
615	ev_fork_prepare (void)
616	{
617	/* nop */
618	}
619
620	void
621	ev_fork_parent (void)
622	{
623	/* nop */
624	}
625
626	void
627	ev_fork_child (void)
628	{
629	#if EV_USE_EPOLL
630	if (ev_method == EVMETHOD_EPOLL)
631	epoll_postfork_child ();
632	#endif
633
634	ev_io_stop (&sigev);
635	close (sigpipe [0]);
636	close (sigpipe [1]);
637	pipe (sigpipe);
638	siginit ();
639	}
640
641	/*****************************************************************************/
642
643	static void	876	static void
644	call_pending (void)	877	call_pending (EV_P)
645	{	878	{
646	int pri;	879	int pri;
647		880
648	for (pri = NUMPRI; pri--; )	881	for (pri = NUMPRI; pri--; )
649	while (pendingcnt [pri])	882	while (pendingcnt [pri])
…		…
651	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	884	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
652		885
653	if (p->w)	886	if (p->w)
654	{	887	{
655	p->w->pending = 0;	888	p->w->pending = 0;
656	p->w->cb (p->w, p->events);	889	p->w->cb (EV_A_ p->w, p->events);
657	}	890	}
658	}	891	}
659	}	892	}
660		893
661	static void	894	static void
662	timers_reify (void)	895	timers_reify (EV_P)
663	{	896	{
664	while (timercnt && timers [0]->at <= now)	897	while (timercnt && ((WT)timers [0])->at <= mn_now)
665	{	898	{
666	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)));
667		902
668	/* first reschedule or stop timer */	903	/* first reschedule or stop timer */
669	if (w->repeat)	904	if (w->repeat)
670	{	905	{
671	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.));
672	w->at = now + w->repeat;	907	((WT)w)->at = mn_now + w->repeat;
673	downheap ((WT *)timers, timercnt, 0);	908	downheap ((WT *)timers, timercnt, 0);
674	}	909	}
675	else	910	else
676	ev_timer_stop (w); /* nonrepeating: stop timer */	911	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
677		912
678	event ((W)w, EV_TIMEOUT);	913	event (EV_A_ (W)w, EV_TIMEOUT);
679	}	914	}
680	}	915	}
681		916
682	static void	917	static void
683	periodics_reify (void)	918	periodics_reify (EV_P)
684	{	919	{
685	while (periodiccnt && periodics [0]->at <= ev_now)	920	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
686	{	921	{
687	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)));
688		925
689	/* first reschedule or stop timer */	926	/* first reschedule or stop timer */
690	if (w->interval)	927	if (w->interval)
691	{	928	{
692	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;
693	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));
694	downheap ((WT *)periodics, periodiccnt, 0);	931	downheap ((WT *)periodics, periodiccnt, 0);
695	}	932	}
696	else	933	else
697	ev_periodic_stop (w); /* nonrepeating: stop timer */	934	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
698		935
699	event ((W)w, EV_PERIODIC);	936	event (EV_A_ (W)w, EV_PERIODIC);
700	}	937	}
701	}	938	}
702		939
703	static void	940	static void
704	periodics_reschedule (ev_tstamp diff)	941	periodics_reschedule (EV_P)
705	{	942	{
706	int i;	943	int i;
707		944
708	/* adjust periodics after time jump */	945	/* adjust periodics after time jump */
709	for (i = 0; i < periodiccnt; ++i)	946	for (i = 0; i < periodiccnt; ++i)
710	{	947	{
711	struct ev_periodic *w = periodics [i];	948	struct ev_periodic *w = periodics [i];
712		949
713	if (w->interval)	950	if (w->interval)
714	{	951	{
715	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;
716		953
717	if (fabs (diff) >= 1e-4)	954	if (fabs (diff) >= 1e-4)
718	{	955	{
719	ev_periodic_stop (w);	956	ev_periodic_stop (EV_A_ w);
720	ev_periodic_start (w);	957	ev_periodic_start (EV_A_ w);
721		958
722	i = 0; /* restart loop, inefficient, but time jumps should be rare */	959	i = 0; /* restart loop, inefficient, but time jumps should be rare */
723	}	960	}
724	}	961	}
725	}	962	}
726	}	963	}
727		964
728	static int	965	inline int
729	time_update_monotonic (void)	966	time_update_monotonic (EV_P)
730	{	967	{
731	now = get_clock ();	968	mn_now = get_clock ();
732		969
733	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	970	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
734	{	971	{
735	ev_now = now + diff;	972	rt_now = rtmn_diff + mn_now;
736	return 0;	973	return 0;
737	}	974	}
738	else	975	else
739	{	976	{
740	now_floor = now;	977	now_floor = mn_now;
741	ev_now = ev_time ();	978	rt_now = ev_time ();
742	return 1;	979	return 1;
743	}	980	}
744	}	981	}
745		982
746	static void	983	static void
747	time_update (void)	984	time_update (EV_P)
748	{	985	{
749	int i;	986	int i;
750		987
751	#if EV_USE_MONOTONIC	988	#if EV_USE_MONOTONIC
752	if (expect_true (have_monotonic))	989	if (expect_true (have_monotonic))
753	{	990	{
754	if (time_update_monotonic ())	991	if (time_update_monotonic (EV_A))
755	{	992	{
756	ev_tstamp odiff = diff;	993	ev_tstamp odiff = rtmn_diff;
757		994
758	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 */
759	{	996	{
760	diff = ev_now - now;	997	rtmn_diff = rt_now - mn_now;
761		998
762	if (fabs (odiff - diff) < MIN_TIMEJUMP)	999	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
763	return; /* all is well */	1000	return; /* all is well */
764		1001
765	ev_now = ev_time ();	1002	rt_now = ev_time ();
766	now = get_clock ();	1003	mn_now = get_clock ();
767	now_floor = now;	1004	now_floor = mn_now;
768	}	1005	}
769		1006
770	periodics_reschedule (diff - odiff);	1007	periodics_reschedule (EV_A);
771	/* 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) */
772	}	1010	}
773	}	1011	}
774	else	1012	else
775	#endif	1013	#endif
776	{	1014	{
777	ev_now = ev_time ();	1015	rt_now = ev_time ();
778		1016
779	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))
780	{	1018	{
781	periodics_reschedule (ev_now - now);	1019	periodics_reschedule (EV_A);
782		1020
783	/* 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 */
784	for (i = 0; i < timercnt; ++i)	1022	for (i = 0; i < timercnt; ++i)
785	timers [i]->at += diff;	1023	((WT)timers [i])->at += rt_now - mn_now;
786	}	1024	}
787		1025
788	now = ev_now;	1026	mn_now = rt_now;
789	}	1027	}
790	}	1028	}
791		1029
792	int ev_loop_done;	1030	void
		1031	ev_ref (EV_P)
		1032	{
		1033	++activecnt;
		1034	}
793		1035
		1036	void
		1037	ev_unref (EV_P)
		1038	{
		1039	--activecnt;
		1040	}
		1041
		1042	static int loop_done;
		1043
		1044	void
794	void ev_loop (int flags)	1045	ev_loop (EV_P_ int flags)
795	{	1046	{
796	double block;	1047	double block;
797	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1048	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
798		1049
799	do	1050	do
800	{	1051	{
801	/* queue check watchers (and execute them) */	1052	/* queue check watchers (and execute them) */
802	if (expect_false (preparecnt))	1053	if (expect_false (preparecnt))
803	{	1054	{
804	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1055	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
805	call_pending ();	1056	call_pending (EV_A);
806	}	1057	}
807		1058
		1059	/* we might have forked, so reify kernel state if necessary */
		1060	if (expect_false (postfork))
		1061	loop_fork (EV_A);
		1062
808	/* update fd-related kernel structures */	1063	/* update fd-related kernel structures */
809	fd_reify ();	1064	fd_reify (EV_A);
810		1065
811	/* calculate blocking time */	1066	/* calculate blocking time */
812		1067
813	/* 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
814	always have timers, we just calculate it always */	1069	always have timers, we just calculate it always */
815	#if EV_USE_MONOTONIC	1070	#if EV_USE_MONOTONIC
816	if (expect_true (have_monotonic))	1071	if (expect_true (have_monotonic))
817	time_update_monotonic ();	1072	time_update_monotonic (EV_A);
818	else	1073	else
819	#endif	1074	#endif
820	{	1075	{
821	ev_now = ev_time ();	1076	rt_now = ev_time ();
822	now = ev_now;	1077	mn_now = rt_now;
823	}	1078	}
824		1079
825	if (flags & EVLOOP_NONBLOCK || idlecnt)	1080	if (flags & EVLOOP_NONBLOCK || idlecnt)
826	block = 0.;	1081	block = 0.;
827	else	1082	else
828	{	1083	{
829	block = MAX_BLOCKTIME;	1084	block = MAX_BLOCKTIME;
830		1085
831	if (timercnt)	1086	if (timercnt)
832	{	1087	{
833	ev_tstamp to = timers [0]->at - now + method_fudge;	1088	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
834	if (block > to) block = to;	1089	if (block > to) block = to;
835	}	1090	}
836		1091
837	if (periodiccnt)	1092	if (periodiccnt)
838	{	1093	{
839	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1094	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
840	if (block > to) block = to;	1095	if (block > to) block = to;
841	}	1096	}
842		1097
843	if (block < 0.) block = 0.;	1098	if (block < 0.) block = 0.;
844	}	1099	}
845		1100
846	method_poll (block);	1101	method_poll (EV_A_ block);
847		1102
848	/* update ev_now, do magic */	1103	/* update rt_now, do magic */
849	time_update ();	1104	time_update (EV_A);
850		1105
851	/* queue pending timers and reschedule them */	1106	/* queue pending timers and reschedule them */
852	timers_reify (); /* relative timers called last */	1107	timers_reify (EV_A); /* relative timers called last */
853	periodics_reify (); /* absolute timers called first */	1108	periodics_reify (EV_A); /* absolute timers called first */
854		1109
855	/* queue idle watchers unless io or timers are pending */	1110	/* queue idle watchers unless io or timers are pending */
856	if (!pendingcnt)	1111	if (!pendingcnt)
857	queue_events ((W *)idles, idlecnt, EV_IDLE);	1112	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
858		1113
859	/* queue check watchers, to be executed first */	1114	/* queue check watchers, to be executed first */
860	if (checkcnt)	1115	if (checkcnt)
861	queue_events ((W *)checks, checkcnt, EV_CHECK);	1116	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
862		1117
863	call_pending ();	1118	call_pending (EV_A);
864	}	1119	}
865	while (!ev_loop_done);	1120	while (activecnt && !loop_done);
866		1121
867	if (ev_loop_done != 2)	1122	if (loop_done != 2)
868	ev_loop_done = 0;	1123	loop_done = 0;
		1124	}
		1125
		1126	void
		1127	ev_unloop (EV_P_ int how)
		1128	{
		1129	loop_done = how;
869	}	1130	}
870		1131
871	/*****************************************************************************/	1132	/*****************************************************************************/
872		1133
873	static void	1134	inline void
874	wlist_add (WL *head, WL elem)	1135	wlist_add (WL *head, WL elem)
875	{	1136	{
876	elem->next = *head;	1137	elem->next = *head;
877	*head = elem;	1138	*head = elem;
878	}	1139	}
879		1140
880	static void	1141	inline void
881	wlist_del (WL *head, WL elem)	1142	wlist_del (WL *head, WL elem)
882	{	1143	{
883	while (*head)	1144	while (*head)
884	{	1145	{
885	if (*head == elem)	1146	if (*head == elem)
…		…
890		1151
891	head = &(*head)->next;	1152	head = &(*head)->next;
892	}	1153	}
893	}	1154	}
894		1155
895	static void	1156	inline void
896	ev_clear_pending (W w)	1157	ev_clear_pending (EV_P_ W w)
897	{	1158	{
898	if (w->pending)	1159	if (w->pending)
899	{	1160	{
900	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1161	pendings [ABSPRI (w)][w->pending - 1].w = 0;
901	w->pending = 0;	1162	w->pending = 0;
902	}	1163	}
903	}	1164	}
904		1165
905	static void	1166	inline void
906	ev_start (W w, int active)	1167	ev_start (EV_P_ W w, int active)
907	{	1168	{
908	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1169	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
909	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1170	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
910		1171
911	w->active = active;	1172	w->active = active;
		1173	ev_ref (EV_A);
912	}	1174	}
913		1175
914	static void	1176	inline void
915	ev_stop (W w)	1177	ev_stop (EV_P_ W w)
916	{	1178	{
		1179	ev_unref (EV_A);
917	w->active = 0;	1180	w->active = 0;
918	}	1181	}
919		1182
920	/*****************************************************************************/	1183	/*****************************************************************************/
921		1184
922	void	1185	void
923	ev_io_start (struct ev_io *w)	1186	ev_io_start (EV_P_ struct ev_io *w)
924	{	1187	{
925	int fd = w->fd;	1188	int fd = w->fd;
926		1189
927	if (ev_is_active (w))	1190	if (ev_is_active (w))
928	return;	1191	return;
929		1192
930	assert (("ev_io_start called with negative fd", fd >= 0));	1193	assert (("ev_io_start called with negative fd", fd >= 0));
931		1194
932	ev_start ((W)w, 1);	1195	ev_start (EV_A_ (W)w, 1);
933	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1196	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
934	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1197	wlist_add ((WL *)&anfds[fd].head, (WL)w);
935		1198
936	fd_change (fd);	1199	fd_change (EV_A_ fd);
937	}	1200	}
938		1201
939	void	1202	void
940	ev_io_stop (struct ev_io *w)	1203	ev_io_stop (EV_P_ struct ev_io *w)
941	{	1204	{
942	ev_clear_pending ((W)w);	1205	ev_clear_pending (EV_A_ (W)w);
943	if (!ev_is_active (w))	1206	if (!ev_is_active (w))
944	return;	1207	return;
945		1208
946	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1209	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
947	ev_stop ((W)w);	1210	ev_stop (EV_A_ (W)w);
948		1211
949	fd_change (w->fd);	1212	fd_change (EV_A_ w->fd);
950	}	1213	}
951		1214
952	void	1215	void
953	ev_timer_start (struct ev_timer *w)	1216	ev_timer_start (EV_P_ struct ev_timer *w)
954	{	1217	{
955	if (ev_is_active (w))	1218	if (ev_is_active (w))
956	return;	1219	return;
957		1220
958	w->at += now;	1221	((WT)w)->at += mn_now;
959		1222
960	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.));
961		1224
962	ev_start ((W)w, ++timercnt);	1225	ev_start (EV_A_ (W)w, ++timercnt);
963	array_needsize (timers, timermax, timercnt, );	1226	array_needsize (timers, timermax, timercnt, );
964	timers [timercnt - 1] = w;	1227	timers [timercnt - 1] = w;
965	upheap ((WT *)timers, timercnt - 1);	1228	upheap ((WT *)timers, timercnt - 1);
966	}
967		1229
		1230	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1231	}
		1232
968	void	1233	void
969	ev_timer_stop (struct ev_timer *w)	1234	ev_timer_stop (EV_P_ struct ev_timer *w)
970	{	1235	{
971	ev_clear_pending ((W)w);	1236	ev_clear_pending (EV_A_ (W)w);
972	if (!ev_is_active (w))	1237	if (!ev_is_active (w))
973	return;	1238	return;
974		1239
		1240	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1241
975	if (w->active < timercnt--)	1242	if (((W)w)->active < timercnt--)
976	{	1243	{
977	timers [w->active - 1] = timers [timercnt];	1244	timers [((W)w)->active - 1] = timers [timercnt];
978	downheap ((WT *)timers, timercnt, w->active - 1);	1245	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
979	}	1246	}
980		1247
981	w->at = w->repeat;	1248	((WT)w)->at = w->repeat;
982		1249
983	ev_stop ((W)w);	1250	ev_stop (EV_A_ (W)w);
984	}	1251	}
985		1252
986	void	1253	void
987	ev_timer_again (struct ev_timer *w)	1254	ev_timer_again (EV_P_ struct ev_timer *w)
988	{	1255	{
989	if (ev_is_active (w))	1256	if (ev_is_active (w))
990	{	1257	{
991	if (w->repeat)	1258	if (w->repeat)
992	{	1259	{
993	w->at = now + w->repeat;	1260	((WT)w)->at = mn_now + w->repeat;
994	downheap ((WT *)timers, timercnt, w->active - 1);	1261	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
995	}	1262	}
996	else	1263	else
997	ev_timer_stop (w);	1264	ev_timer_stop (EV_A_ w);
998	}	1265	}
999	else if (w->repeat)	1266	else if (w->repeat)
1000	ev_timer_start (w);	1267	ev_timer_start (EV_A_ w);
1001	}	1268	}
1002		1269
1003	void	1270	void
1004	ev_periodic_start (struct ev_periodic *w)	1271	ev_periodic_start (EV_P_ struct ev_periodic *w)
1005	{	1272	{
1006	if (ev_is_active (w))	1273	if (ev_is_active (w))
1007	return;	1274	return;
1008		1275
1009	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.));
1010		1277
1011	/* 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 */
1012	if (w->interval)	1279	if (w->interval)
1013	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;
1014		1281
1015	ev_start ((W)w, ++periodiccnt);	1282	ev_start (EV_A_ (W)w, ++periodiccnt);
1016	array_needsize (periodics, periodicmax, periodiccnt, );	1283	array_needsize (periodics, periodicmax, periodiccnt, );
1017	periodics [periodiccnt - 1] = w;	1284	periodics [periodiccnt - 1] = w;
1018	upheap ((WT *)periodics, periodiccnt - 1);	1285	upheap ((WT *)periodics, periodiccnt - 1);
1019	}
1020		1286
		1287	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1288	}
		1289
1021	void	1290	void
1022	ev_periodic_stop (struct ev_periodic *w)	1291	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1023	{	1292	{
1024	ev_clear_pending ((W)w);	1293	ev_clear_pending (EV_A_ (W)w);
1025	if (!ev_is_active (w))	1294	if (!ev_is_active (w))
1026	return;	1295	return;
1027		1296
		1297	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1298
1028	if (w->active < periodiccnt--)	1299	if (((W)w)->active < periodiccnt--)
1029	{	1300	{
1030	periodics [w->active - 1] = periodics [periodiccnt];	1301	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1031	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1302	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1032	}	1303	}
1033		1304
1034	ev_stop ((W)w);	1305	ev_stop (EV_A_ (W)w);
		1306	}
		1307
		1308	void
		1309	ev_idle_start (EV_P_ struct ev_idle *w)
		1310	{
		1311	if (ev_is_active (w))
		1312	return;
		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);
1035	}	1372	}
1036		1373
1037	#ifndef SA_RESTART	1374	#ifndef SA_RESTART
1038	# define SA_RESTART 0	1375	# define SA_RESTART 0
1039	#endif	1376	#endif
1040		1377
1041	void	1378	void
1042	ev_signal_start (struct ev_signal *w)	1379	ev_signal_start (EV_P_ struct ev_signal *w)
1043	{	1380	{
		1381	#if EV_MULTIPLICITY
		1382	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1383	#endif
1044	if (ev_is_active (w))	1384	if (ev_is_active (w))
1045	return;	1385	return;
1046		1386
1047	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));
1048		1388
1049	ev_start ((W)w, 1);	1389	ev_start (EV_A_ (W)w, 1);
1050	array_needsize (signals, signalmax, w->signum, signals_init);	1390	array_needsize (signals, signalmax, w->signum, signals_init);
1051	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1391	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1052		1392
1053	if (!w->next)	1393	if (!((WL)w)->next)
1054	{	1394	{
		1395	#if WIN32
		1396	signal (w->signum, sighandler);
		1397	#else
1055	struct sigaction sa;	1398	struct sigaction sa;
1056	sa.sa_handler = sighandler;	1399	sa.sa_handler = sighandler;
1057	sigfillset (&sa.sa_mask);	1400	sigfillset (&sa.sa_mask);
1058	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1401	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1059	sigaction (w->signum, &sa, 0);	1402	sigaction (w->signum, &sa, 0);
		1403	#endif
1060	}	1404	}
1061	}	1405	}
1062		1406
1063	void	1407	void
1064	ev_signal_stop (struct ev_signal *w)	1408	ev_signal_stop (EV_P_ struct ev_signal *w)
1065	{	1409	{
1066	ev_clear_pending ((W)w);	1410	ev_clear_pending (EV_A_ (W)w);
1067	if (!ev_is_active (w))	1411	if (!ev_is_active (w))
1068	return;	1412	return;
1069		1413
1070	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1414	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1071	ev_stop ((W)w);	1415	ev_stop (EV_A_ (W)w);
1072		1416
1073	if (!signals [w->signum - 1].head)	1417	if (!signals [w->signum - 1].head)
1074	signal (w->signum, SIG_DFL);	1418	signal (w->signum, SIG_DFL);
1075	}	1419	}
1076		1420
1077	void	1421	void
1078	ev_idle_start (struct ev_idle *w)	1422	ev_child_start (EV_P_ struct ev_child *w)
1079	{	1423	{
		1424	#if EV_MULTIPLICITY
		1425	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1426	#endif
1080	if (ev_is_active (w))	1427	if (ev_is_active (w))
1081	return;	1428	return;
1082		1429
1083	ev_start ((W)w, ++idlecnt);	1430	ev_start (EV_A_ (W)w, 1);
1084	array_needsize (idles, idlemax, idlecnt, );	1431	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1085	idles [idlecnt - 1] = w;
1086	}	1432	}
1087		1433
1088	void	1434	void
1089	ev_idle_stop (struct ev_idle *w)	1435	ev_child_stop (EV_P_ struct ev_child *w)
1090	{	1436	{
1091	ev_clear_pending ((W)w);	1437	ev_clear_pending (EV_A_ (W)w);
1092	if (ev_is_active (w))	1438	if (ev_is_active (w))
1093	return;	1439	return;
1094		1440
1095	idles [w->active - 1] = idles [--idlecnt];
1096	ev_stop ((W)w);
1097	}
1098
1099	void
1100	ev_prepare_start (struct ev_prepare *w)
1101	{
1102	if (ev_is_active (w))
1103	return;
1104
1105	ev_start ((W)w, ++preparecnt);
1106	array_needsize (prepares, preparemax, preparecnt, );
1107	prepares [preparecnt - 1] = w;
1108	}
1109
1110	void
1111	ev_prepare_stop (struct ev_prepare *w)
1112	{
1113	ev_clear_pending ((W)w);
1114	if (ev_is_active (w))
1115	return;
1116
1117	prepares [w->active - 1] = prepares [--preparecnt];
1118	ev_stop ((W)w);
1119	}
1120
1121	void
1122	ev_check_start (struct ev_check *w)
1123	{
1124	if (ev_is_active (w))
1125	return;
1126
1127	ev_start ((W)w, ++checkcnt);
1128	array_needsize (checks, checkmax, checkcnt, );
1129	checks [checkcnt - 1] = w;
1130	}
1131
1132	void
1133	ev_check_stop (struct ev_check *w)
1134	{
1135	ev_clear_pending ((W)w);
1136	if (ev_is_active (w))
1137	return;
1138
1139	checks [w->active - 1] = checks [--checkcnt];
1140	ev_stop ((W)w);
1141	}
1142
1143	void
1144	ev_child_start (struct ev_child *w)
1145	{
1146	if (ev_is_active (w))
1147	return;
1148
1149	ev_start ((W)w, 1);
1150	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1151	}
1152
1153	void
1154	ev_child_stop (struct ev_child *w)
1155	{
1156	ev_clear_pending ((W)w);
1157	if (ev_is_active (w))
1158	return;
1159
1160	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1441	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1161	ev_stop ((W)w);	1442	ev_stop (EV_A_ (W)w);
1162	}	1443	}
1163		1444
1164	/*****************************************************************************/	1445	/*****************************************************************************/
1165		1446
1166	struct ev_once	1447	struct ev_once
…		…
1170	void (*cb)(int revents, void *arg);	1451	void (*cb)(int revents, void *arg);
1171	void *arg;	1452	void *arg;
1172	};	1453	};
1173		1454
1174	static void	1455	static void
1175	once_cb (struct ev_once *once, int revents)	1456	once_cb (EV_P_ struct ev_once *once, int revents)
1176	{	1457	{
1177	void (*cb)(int revents, void *arg) = once->cb;	1458	void (*cb)(int revents, void *arg) = once->cb;
1178	void *arg = once->arg;	1459	void *arg = once->arg;
1179		1460
1180	ev_io_stop (&once->io);	1461	ev_io_stop (EV_A_ &once->io);
1181	ev_timer_stop (&once->to);	1462	ev_timer_stop (EV_A_ &once->to);
1182	free (once);	1463	ev_free (once);
1183		1464
1184	cb (revents, arg);	1465	cb (revents, arg);
1185	}	1466	}
1186		1467
1187	static void	1468	static void
1188	once_cb_io (struct ev_io *w, int revents)	1469	once_cb_io (EV_P_ struct ev_io *w, int revents)
1189	{	1470	{
1190	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);
1191	}	1472	}
1192		1473
1193	static void	1474	static void
1194	once_cb_to (struct ev_timer *w, int revents)	1475	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1195	{	1476	{
1196	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);
1197	}	1478	}
1198		1479
1199	void	1480	void
1200	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)
1201	{	1482	{
1202	struct ev_once *once = malloc (sizeof (struct ev_once));	1483	struct ev_once *once = ev_malloc (sizeof (struct ev_once));
1203		1484
1204	if (!once)	1485	if (!once)
1205	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1486	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1206	else	1487	else
1207	{	1488	{
…		…
1210		1491
1211	ev_watcher_init (&once->io, once_cb_io);	1492	ev_watcher_init (&once->io, once_cb_io);
1212	if (fd >= 0)	1493	if (fd >= 0)
1213	{	1494	{
1214	ev_io_set (&once->io, fd, events);	1495	ev_io_set (&once->io, fd, events);
1215	ev_io_start (&once->io);	1496	ev_io_start (EV_A_ &once->io);
1216	}	1497	}
1217		1498
1218	ev_watcher_init (&once->to, once_cb_to);	1499	ev_watcher_init (&once->to, once_cb_to);
1219	if (timeout >= 0.)	1500	if (timeout >= 0.)
1220	{	1501	{
1221	ev_timer_set (&once->to, timeout, 0.);	1502	ev_timer_set (&once->to, timeout, 0.);
1222	ev_timer_start (&once->to);	1503	ev_timer_start (EV_A_ &once->to);
1223	}	1504	}
1224	}	1505	}
1225	}	1506	}
1226		1507
1227	/*****************************************************************************/
1228
1229	#if 0
1230
1231	struct ev_io wio;
1232
1233	static void
1234	sin_cb (struct ev_io *w, int revents)
1235	{
1236	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1237	}
1238
1239	static void
1240	ocb (struct ev_timer *w, int revents)
1241	{
1242	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1243	ev_timer_stop (w);
1244	ev_timer_start (w);
1245	}
1246
1247	static void
1248	scb (struct ev_signal *w, int revents)
1249	{
1250	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1251	ev_io_stop (&wio);
1252	ev_io_start (&wio);
1253	}
1254
1255	static void
1256	gcb (struct ev_signal *w, int revents)
1257	{
1258	fprintf (stderr, "generic %x\n", revents);
1259
1260	}
1261
1262	int main (void)
1263	{
1264	ev_init (0);
1265
1266	ev_io_init (&wio, sin_cb, 0, EV_READ);
1267	ev_io_start (&wio);
1268
1269	struct ev_timer t[10000];
1270
1271	#if 0
1272	int i;
1273	for (i = 0; i < 10000; ++i)
1274	{
1275	struct ev_timer *w = t + i;
1276	ev_watcher_init (w, ocb, i);
1277	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1278	ev_timer_start (w);
1279	if (drand48 () < 0.5)
1280	ev_timer_stop (w);
1281	}
1282	#endif
1283
1284	struct ev_timer t1;
1285	ev_timer_init (&t1, ocb, 5, 10);
1286	ev_timer_start (&t1);
1287
1288	struct ev_signal sig;
1289	ev_signal_init (&sig, scb, SIGQUIT);
1290	ev_signal_start (&sig);
1291
1292	struct ev_check cw;
1293	ev_check_init (&cw, gcb);
1294	ev_check_start (&cw);
1295
1296	struct ev_idle iw;
1297	ev_idle_init (&iw, gcb);
1298	ev_idle_start (&iw);
1299
1300	ev_loop (0);
1301
1302	return 0;
1303	}
1304
1305	#endif
1306
1307
1308
1309

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