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

Comparing libev/ev.c (file contents):
Revision 1.41 by root, Fri Nov 2 16:54:34 2007 UTC vs.
Revision 1.68 by root, Mon Nov 5 20:19:00 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
31	#if EV_USE_CONFIG_H	31	#ifndef EV_STANDALONE
32	# include "config.h"	32	# include "config.h"
		33
		34	# if HAVE_CLOCK_GETTIME
		35	# define EV_USE_MONOTONIC 1
		36	# define EV_USE_REALTIME 1
		37	# endif
		38
		39	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		40	# define EV_USE_SELECT 1
		41	# endif
		42
		43	# if HAVE_POLL && HAVE_POLL_H
		44	# define EV_USE_POLL 1
		45	# endif
		46
		47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		48	# define EV_USE_EPOLL 1
		49	# endif
		50
		51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		52	# define EV_USE_KQUEUE 1
		53	# endif
		54
33	#endif	55	#endif
34		56
35	#include <math.h>	57	#include <math.h>
36	#include <stdlib.h>	58	#include <stdlib.h>
37	#include <unistd.h>	59	#include <unistd.h>
…		…
42	#include <stdio.h>	64	#include <stdio.h>
43		65
44	#include <assert.h>	66	#include <assert.h>
45	#include <errno.h>	67	#include <errno.h>
46	#include <sys/types.h>	68	#include <sys/types.h>
		69	#ifndef WIN32
47	#include <sys/wait.h>	70	# include <sys/wait.h>
		71	#endif
48	#include <sys/time.h>	72	#include <sys/time.h>
49	#include <time.h>	73	#include <time.h>
50		74
51	/**/	75	/**/
52		76
…		…
62	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	86	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
63	#endif	87	#endif
64		88
65	#ifndef EV_USE_EPOLL	89	#ifndef EV_USE_EPOLL
66	# define EV_USE_EPOLL 0	90	# define EV_USE_EPOLL 0
		91	#endif
		92
		93	#ifndef EV_USE_KQUEUE
		94	# define EV_USE_KQUEUE 0
		95	#endif
		96
		97	#ifndef EV_USE_WIN32
		98	# ifdef WIN32
		99	# define EV_USE_WIN32 1
		100	# else
		101	# define EV_USE_WIN32 0
		102	# endif
67	#endif	103	#endif
68		104
69	#ifndef EV_USE_REALTIME	105	#ifndef EV_USE_REALTIME
70	# define EV_USE_REALTIME 1	106	# define EV_USE_REALTIME 1
71	#endif	107	#endif
…		…
100	#endif	136	#endif
101		137
102	#define expect_false(expr) expect ((expr) != 0, 0)	138	#define expect_false(expr) expect ((expr) != 0, 0)
103	#define expect_true(expr) expect ((expr) != 0, 1)	139	#define expect_true(expr) expect ((expr) != 0, 1)
104		140
		141	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		142	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
		143
105	typedef struct ev_watcher *W;	144	typedef struct ev_watcher *W;
106	typedef struct ev_watcher_list *WL;	145	typedef struct ev_watcher_list *WL;
107	typedef struct ev_watcher_time *WT;	146	typedef struct ev_watcher_time *WT;
108		147
109	static ev_tstamp now_floor, now, diff; /* monotonic clock */	148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
110	ev_tstamp ev_now;
111	int ev_method;
112		149
113	static int have_monotonic; /* runtime */	150	#if WIN32
114		151	/* note: the comment below could not be substantiated, but what would I care */
115	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	152	/* MSDN says this is required to handle SIGFPE */
116	static void (*method_modify)(int fd, int oev, int nev);	153	volatile double SIGFPE_REQ = 0.0f;
117	static void (*method_poll)(ev_tstamp timeout);	154	#endif
118		155
119	/*****************************************************************************/	156	/*****************************************************************************/
120		157
121	ev_tstamp	158	typedef struct
		159	{
		160	WL head;
		161	unsigned char events;
		162	unsigned char reify;
		163	} ANFD;
		164
		165	typedef struct
		166	{
		167	W w;
		168	int events;
		169	} ANPENDING;
		170
		171	#if EV_MULTIPLICITY
		172
		173	struct ev_loop
		174	{
		175	# define VAR(name,decl) decl;
		176	# include "ev_vars.h"
		177	};
		178	# undef VAR
		179	# include "ev_wrap.h"
		180
		181	#else
		182
		183	# define VAR(name,decl) static decl;
		184	# include "ev_vars.h"
		185	# undef VAR
		186
		187	#endif
		188
		189	/*****************************************************************************/
		190
		191	inline ev_tstamp
122	ev_time (void)	192	ev_time (void)
123	{	193	{
124	#if EV_USE_REALTIME	194	#if EV_USE_REALTIME
125	struct timespec ts;	195	struct timespec ts;
126	clock_gettime (CLOCK_REALTIME, &ts);	196	clock_gettime (CLOCK_REALTIME, &ts);
…		…
130	gettimeofday (&tv, 0);	200	gettimeofday (&tv, 0);
131	return tv.tv_sec + tv.tv_usec * 1e-6;	201	return tv.tv_sec + tv.tv_usec * 1e-6;
132	#endif	202	#endif
133	}	203	}
134		204
135	static ev_tstamp	205	inline ev_tstamp
136	get_clock (void)	206	get_clock (void)
137	{	207	{
138	#if EV_USE_MONOTONIC	208	#if EV_USE_MONOTONIC
139	if (expect_true (have_monotonic))	209	if (expect_true (have_monotonic))
140	{	210	{
…		…
143	return ts.tv_sec + ts.tv_nsec * 1e-9;	213	return ts.tv_sec + ts.tv_nsec * 1e-9;
144	}	214	}
145	#endif	215	#endif
146		216
147	return ev_time ();	217	return ev_time ();
		218	}
		219
		220	ev_tstamp
		221	ev_now (EV_P)
		222	{
		223	return rt_now;
148	}	224	}
149		225
150	#define array_roundsize(base,n) ((n) \| 4 & ~3)	226	#define array_roundsize(base,n) ((n) \| 4 & ~3)
151		227
152	#define array_needsize(base,cur,cnt,init) \	228	#define array_needsize(base,cur,cnt,init) \
…		…
162	base = realloc (base, sizeof (base) (newcnt)); \	238	base = realloc (base, sizeof (base) (newcnt)); \
163	init (base + cur, newcnt - cur); \	239	init (base + cur, newcnt - cur); \
164	cur = newcnt; \	240	cur = newcnt; \
165	}	241	}
166		242
		243	#define array_slim(stem) \
		244	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		245	{ \
		246	stem ## max = array_roundsize (stem ## cnt >> 1); \
		247	base = realloc (base, sizeof (base) (stem ## max)); \
		248	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		249	}
		250
		251	#define array_free(stem, idx) \
		252	free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
		253
167	/*****************************************************************************/	254	/*****************************************************************************/
168
169	typedef struct
170	{
171	struct ev_io *head;
172	unsigned char events;
173	unsigned char reify;
174	} ANFD;
175
176	static ANFD *anfds;
177	static int anfdmax;
178		255
179	static void	256	static void
180	anfds_init (ANFD *base, int count)	257	anfds_init (ANFD *base, int count)
181	{	258	{
182	while (count--)	259	while (count--)
…		…
187		264
188	++base;	265	++base;
189	}	266	}
190	}	267	}
191		268
192	typedef struct
193	{
194	W w;
195	int events;
196	} ANPENDING;
197
198	static ANPENDING *pendings;
199	static int pendingmax, pendingcnt;
200
201	static void	269	static void
202	event (W w, int events)	270	event (EV_P_ W w, int events)
203	{	271	{
204	if (w->pending)	272	if (w->pending)
205	{	273	{
206	pendings [w->pending - 1].events \|= events;	274	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
207	return;	275	return;
208	}	276	}
209		277
210	w->pending = ++pendingcnt;	278	w->pending = ++pendingcnt [ABSPRI (w)];
211	array_needsize (pendings, pendingmax, pendingcnt, );	279	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
212	pendings [pendingcnt - 1].w = w;	280	pendings [ABSPRI (w)][w->pending - 1].w = w;
213	pendings [pendingcnt - 1].events = events;	281	pendings [ABSPRI (w)][w->pending - 1].events = events;
214	}	282	}
215		283
216	static void	284	static void
217	queue_events (W *events, int eventcnt, int type)	285	queue_events (EV_P_ W *events, int eventcnt, int type)
218	{	286	{
219	int i;	287	int i;
220		288
221	for (i = 0; i < eventcnt; ++i)	289	for (i = 0; i < eventcnt; ++i)
222	event (events [i], type);	290	event (EV_A_ events [i], type);
223	}	291	}
224		292
225	static void	293	static void
226	fd_event (int fd, int events)	294	fd_event (EV_P_ int fd, int events)
227	{	295	{
228	ANFD *anfd = anfds + fd;	296	ANFD *anfd = anfds + fd;
229	struct ev_io *w;	297	struct ev_io *w;
230		298
231	for (w = anfd->head; w; w = w->next)	299	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
232	{	300	{
233	int ev = w->events & events;	301	int ev = w->events & events;
234		302
235	if (ev)	303	if (ev)
236	event ((W)w, ev);	304	event (EV_A_ (W)w, ev);
237	}	305	}
238	}	306	}
239		307
240	/*****************************************************************************/	308	/*****************************************************************************/
241		309
242	static int *fdchanges;
243	static int fdchangemax, fdchangecnt;
244
245	static void	310	static void
246	fd_reify (void)	311	fd_reify (EV_P)
247	{	312	{
248	int i;	313	int i;
249		314
250	for (i = 0; i < fdchangecnt; ++i)	315	for (i = 0; i < fdchangecnt; ++i)
251	{	316	{
…		…
253	ANFD *anfd = anfds + fd;	318	ANFD *anfd = anfds + fd;
254	struct ev_io *w;	319	struct ev_io *w;
255		320
256	int events = 0;	321	int events = 0;
257		322
258	for (w = anfd->head; w; w = w->next)	323	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
259	events \|= w->events;	324	events \|= w->events;
260		325
261	anfd->reify = 0;	326	anfd->reify = 0;
262		327
263	if (anfd->events != events)
264	{
265	method_modify (fd, anfd->events, events);	328	method_modify (EV_A_ fd, anfd->events, events);
266	anfd->events = events;	329	anfd->events = events;
267	}
268	}	330	}
269		331
270	fdchangecnt = 0;	332	fdchangecnt = 0;
271	}	333	}
272		334
273	static void	335	static void
274	fd_change (int fd)	336	fd_change (EV_P_ int fd)
275	{	337	{
276	if (anfds [fd].reify \|\| fdchangecnt < 0)	338	if (anfds [fd].reify \|\| fdchangecnt < 0)
277	return;	339	return;
278		340
279	anfds [fd].reify = 1;	341	anfds [fd].reify = 1;
…		…
282	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	344	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
283	fdchanges [fdchangecnt - 1] = fd;	345	fdchanges [fdchangecnt - 1] = fd;
284	}	346	}
285		347
286	static void	348	static void
287	fd_kill (int fd)	349	fd_kill (EV_P_ int fd)
288	{	350	{
289	struct ev_io *w;	351	struct ev_io *w;
290		352
291	printf ("killing fd %d\n", fd);//D
292	while ((w = anfds [fd].head))	353	while ((w = (struct ev_io *)anfds [fd].head))
293	{	354	{
294	ev_io_stop (w);	355	ev_io_stop (EV_A_ w);
295	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	356	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
296	}	357	}
297	}	358	}
298		359
299	/* called on EBADF to verify fds */	360	/* called on EBADF to verify fds */
300	static void	361	static void
301	fd_ebadf (void)	362	fd_ebadf (EV_P)
302	{	363	{
303	int fd;	364	int fd;
304		365
305	for (fd = 0; fd < anfdmax; ++fd)	366	for (fd = 0; fd < anfdmax; ++fd)
306	if (anfds [fd].events)	367	if (anfds [fd].events)
307	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	368	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
308	fd_kill (fd);	369	fd_kill (EV_A_ fd);
309	}	370	}
310		371
311	/* called on ENOMEM in select/poll to kill some fds and retry */	372	/* called on ENOMEM in select/poll to kill some fds and retry */
312	static void	373	static void
313	fd_enomem (void)	374	fd_enomem (EV_P)
314	{	375	{
315	int fd = anfdmax;	376	int fd;
316		377
317	while (fd--)	378	for (fd = anfdmax; fd--; )
318	if (anfds [fd].events)	379	if (anfds [fd].events)
319	{	380	{
320	close (fd);
321	fd_kill (fd);	381	fd_kill (EV_A_ fd);
322	return;	382	return;
323	}	383	}
324	}	384	}
325		385
		386	/* susually called after fork if method needs to re-arm all fds from scratch */
		387	static void
		388	fd_rearm_all (EV_P)
		389	{
		390	int fd;
		391
		392	/* this should be highly optimised to not do anything but set a flag */
		393	for (fd = 0; fd < anfdmax; ++fd)
		394	if (anfds [fd].events)
		395	{
		396	anfds [fd].events = 0;
		397	fd_change (EV_A_ fd);
		398	}
		399	}
		400
326	/*****************************************************************************/	401	/*****************************************************************************/
327		402
328	static struct ev_timer **timers;
329	static int timermax, timercnt;
330
331	static struct ev_periodic **periodics;
332	static int periodicmax, periodiccnt;
333
334	static void	403	static void
335	upheap (WT *timers, int k)	404	upheap (WT *heap, int k)
336	{	405	{
337	WT w = timers [k];	406	WT w = heap [k];
338		407
339	while (k && timers [k >> 1]->at > w->at)	408	while (k && heap [k >> 1]->at > w->at)
340	{	409	{
341	timers [k] = timers [k >> 1];	410	heap [k] = heap [k >> 1];
342	timers [k]->active = k + 1;	411	((W)heap [k])->active = k + 1;
343	k >>= 1;	412	k >>= 1;
344	}	413	}
345		414
346	timers [k] = w;	415	heap [k] = w;
347	timers [k]->active = k + 1;	416	((W)heap [k])->active = k + 1;
348		417
349	}	418	}
350		419
351	static void	420	static void
352	downheap (WT *timers, int N, int k)	421	downheap (WT *heap, int N, int k)
353	{	422	{
354	WT w = timers [k];	423	WT w = heap [k];
355		424
356	while (k < (N >> 1))	425	while (k < (N >> 1))
357	{	426	{
358	int j = k << 1;	427	int j = k << 1;
359		428
360	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	429	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
361	++j;	430	++j;
362		431
363	if (w->at <= timers [j]->at)	432	if (w->at <= heap [j]->at)
364	break;	433	break;
365		434
366	timers [k] = timers [j];	435	heap [k] = heap [j];
367	timers [k]->active = k + 1;	436	((W)heap [k])->active = k + 1;
368	k = j;	437	k = j;
369	}	438	}
370		439
371	timers [k] = w;	440	heap [k] = w;
372	timers [k]->active = k + 1;	441	((W)heap [k])->active = k + 1;
373	}	442	}
374		443
375	/*****************************************************************************/	444	/*****************************************************************************/
376		445
377	typedef struct	446	typedef struct
378	{	447	{
379	struct ev_signal *head;	448	WL head;
380	sig_atomic_t volatile gotsig;	449	sig_atomic_t volatile gotsig;
381	} ANSIG;	450	} ANSIG;
382		451
383	static ANSIG *signals;	452	static ANSIG *signals;
384	static int signalmax;	453	static int signalmax;
…		…
400	}	469	}
401		470
402	static void	471	static void
403	sighandler (int signum)	472	sighandler (int signum)
404	{	473	{
		474	#if WIN32
		475	signal (signum, sighandler);
		476	#endif
		477
405	signals [signum - 1].gotsig = 1;	478	signals [signum - 1].gotsig = 1;
406		479
407	if (!gotsig)	480	if (!gotsig)
408	{	481	{
		482	int old_errno = errno;
409	gotsig = 1;	483	gotsig = 1;
410	write (sigpipe [1], &signum, 1);	484	write (sigpipe [1], &signum, 1);
		485	errno = old_errno;
411	}	486	}
412	}	487	}
413		488
414	static void	489	static void
415	sigcb (struct ev_io *iow, int revents)	490	sigcb (EV_P_ struct ev_io *iow, int revents)
416	{	491	{
417	struct ev_signal *w;	492	WL w;
418	int signum;	493	int signum;
419		494
420	read (sigpipe [0], &revents, 1);	495	read (sigpipe [0], &revents, 1);
421	gotsig = 0;	496	gotsig = 0;
422		497
…		…
424	if (signals [signum].gotsig)	499	if (signals [signum].gotsig)
425	{	500	{
426	signals [signum].gotsig = 0;	501	signals [signum].gotsig = 0;
427		502
428	for (w = signals [signum].head; w; w = w->next)	503	for (w = signals [signum].head; w; w = w->next)
429	event ((W)w, EV_SIGNAL);	504	event (EV_A_ (W)w, EV_SIGNAL);
430	}	505	}
431	}	506	}
432		507
433	static void	508	static void
434	siginit (void)	509	siginit (EV_P)
435	{	510	{
		511	#ifndef WIN32
436	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	512	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
437	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	513	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
438		514
439	/* rather than sort out wether we really need nb, set it */	515	/* rather than sort out wether we really need nb, set it */
440	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	516	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
441	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	517	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		518	#endif
442		519
443	ev_io_set (&sigev, sigpipe [0], EV_READ);	520	ev_io_set (&sigev, sigpipe [0], EV_READ);
444	ev_io_start (&sigev);	521	ev_io_start (EV_A_ &sigev);
		522	ev_unref (EV_A); /* child watcher should not keep loop alive */
445	}	523	}
446		524
447	/*****************************************************************************/	525	/*****************************************************************************/
448		526
449	static struct ev_idle **idles;	527	#ifndef WIN32
450	static int idlemax, idlecnt;
451
452	static struct ev_prepare **prepares;
453	static int preparemax, preparecnt;
454
455	static struct ev_check **checks;
456	static int checkmax, checkcnt;
457
458	/*****************************************************************************/
459		528
460	static struct ev_child *childs [PID_HASHSIZE];	529	static struct ev_child *childs [PID_HASHSIZE];
461	static struct ev_signal childev;	530	static struct ev_signal childev;
462		531
463	#ifndef WCONTINUED	532	#ifndef WCONTINUED
464	# define WCONTINUED 0	533	# define WCONTINUED 0
465	#endif	534	#endif
466		535
467	static void	536	static void
468	childcb (struct ev_signal *sw, int revents)	537	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
469	{	538	{
470	struct ev_child *w;	539	struct ev_child *w;
		540
		541	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		542	if (w->pid == pid \|\| !w->pid)
		543	{
		544	ev_priority (w) = ev_priority (sw); /* need to do it now */
		545	w->rpid = pid;
		546	w->rstatus = status;
		547	event (EV_A_ (W)w, EV_CHILD);
		548	}
		549	}
		550
		551	static void
		552	childcb (EV_P_ struct ev_signal *sw, int revents)
		553	{
471	int pid, status;	554	int pid, status;
472		555
473	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	556	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
474	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	557	{
475	if (w->pid == pid \|\| !w->pid)	558	/* make sure we are called again until all childs have been reaped */
476	{	559	event (EV_A_ (W)sw, EV_SIGNAL);
477	w->status = status;	560
478	event ((W)w, EV_CHILD);	561	child_reap (EV_A_ sw, pid, pid, status);
479	}	562	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		563	}
480	}	564	}
		565
		566	#endif
481		567
482	/*****************************************************************************/	568	/*****************************************************************************/
483		569
		570	#if EV_USE_KQUEUE
		571	# include "ev_kqueue.c"
		572	#endif
484	#if EV_USE_EPOLL	573	#if EV_USE_EPOLL
485	# include "ev_epoll.c"	574	# include "ev_epoll.c"
486	#endif	575	#endif
487	#if EV_USE_POLL	576	#if EV_USE_POLL
488	# include "ev_poll.c"	577	# include "ev_poll.c"
…		…
501	ev_version_minor (void)	590	ev_version_minor (void)
502	{	591	{
503	return EV_VERSION_MINOR;	592	return EV_VERSION_MINOR;
504	}	593	}
505		594
506	/* return true if we are running with elevated privileges and ignore env variables */	595	/* return true if we are running with elevated privileges and should ignore env variables */
507	static int	596	static int
508	enable_secure ()	597	enable_secure (void)
509	{	598	{
		599	#ifdef WIN32
		600	return 0;
		601	#else
510	return getuid () != geteuid ()	602	return getuid () != geteuid ()
511	\|\| getgid () != getegid ();	603	\|\| getgid () != getegid ();
		604	#endif
512	}	605	}
513		606
514	int ev_init (int methods)	607	int
		608	ev_method (EV_P)
515	{	609	{
		610	return method;
		611	}
		612
		613	static void
		614	loop_init (EV_P_ int methods)
		615	{
516	if (!ev_method)	616	if (!method)
517	{	617	{
518	#if EV_USE_MONOTONIC	618	#if EV_USE_MONOTONIC
519	{	619	{
520	struct timespec ts;	620	struct timespec ts;
521	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	621	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
522	have_monotonic = 1;	622	have_monotonic = 1;
523	}	623	}
524	#endif	624	#endif
525		625
526	ev_now = ev_time ();	626	rt_now = ev_time ();
527	now = get_clock ();	627	mn_now = get_clock ();
528	now_floor = now;	628	now_floor = mn_now;
529	diff = ev_now - now;	629	rtmn_diff = rt_now - mn_now;
530
531	if (pipe (sigpipe))
532	return 0;
533		630
534	if (methods == EVMETHOD_AUTO)	631	if (methods == EVMETHOD_AUTO)
535	if (!enable_secure () && getenv ("LIBEV_METHODS"))	632	if (!enable_secure () && getenv ("LIBEV_METHODS"))
536	methods = atoi (getenv ("LIBEV_METHODS"));	633	methods = atoi (getenv ("LIBEV_METHODS"));
537	else	634	else
538	methods = EVMETHOD_ANY;	635	methods = EVMETHOD_ANY;
539		636
540	ev_method = 0;	637	method = 0;
		638	#if EV_USE_WIN32
		639	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		640	#endif
		641	#if EV_USE_KQUEUE
		642	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		643	#endif
541	#if EV_USE_EPOLL	644	#if EV_USE_EPOLL
542	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	645	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
543	#endif	646	#endif
544	#if EV_USE_POLL	647	#if EV_USE_POLL
545	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	648	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
546	#endif	649	#endif
547	#if EV_USE_SELECT	650	#if EV_USE_SELECT
548	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	651	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
549	#endif	652	#endif
		653	}
		654	}
550		655
		656	void
		657	loop_destroy (EV_P)
		658	{
		659	int i;
		660
		661	#if EV_USE_WIN32
		662	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		663	#endif
		664	#if EV_USE_KQUEUE
		665	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		666	#endif
		667	#if EV_USE_EPOLL
		668	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		669	#endif
		670	#if EV_USE_POLL
		671	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		672	#endif
		673	#if EV_USE_SELECT
		674	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		675	#endif
		676
		677	for (i = NUMPRI; i--; )
		678	array_free (pending, [i]);
		679
		680	array_free (fdchange, );
		681	array_free (timer, );
		682	array_free (periodic, );
		683	array_free (idle, );
		684	array_free (prepare, );
		685	array_free (check, );
		686
		687	method = 0;
		688	/TODO/
		689	}
		690
		691	void
		692	loop_fork (EV_P)
		693	{
		694	/TODO/
		695	#if EV_USE_EPOLL
		696	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		697	#endif
		698	#if EV_USE_KQUEUE
		699	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		700	#endif
		701	}
		702
		703	#if EV_MULTIPLICITY
		704	struct ev_loop *
		705	ev_loop_new (int methods)
		706	{
		707	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));
		708
		709	loop_init (EV_A_ methods);
		710
		711	if (ev_method (EV_A))
		712	return loop;
		713
		714	return 0;
		715	}
		716
		717	void
		718	ev_loop_destroy (EV_P)
		719	{
		720	loop_destroy (EV_A);
		721	free (loop);
		722	}
		723
		724	void
		725	ev_loop_fork (EV_P)
		726	{
		727	loop_fork (EV_A);
		728	}
		729
		730	#endif
		731
		732	#if EV_MULTIPLICITY
		733	struct ev_loop default_loop_struct;
		734	static struct ev_loop *default_loop;
		735
		736	struct ev_loop *
		737	#else
		738	static int default_loop;
		739
		740	int
		741	#endif
		742	ev_default_loop (int methods)
		743	{
		744	if (sigpipe [0] == sigpipe [1])
		745	if (pipe (sigpipe))
		746	return 0;
		747
		748	if (!default_loop)
		749	{
		750	#if EV_MULTIPLICITY
		751	struct ev_loop *loop = default_loop = &default_loop_struct;
		752	#else
		753	default_loop = 1;
		754	#endif
		755
		756	loop_init (EV_A_ methods);
		757
551	if (ev_method)	758	if (ev_method (EV_A))
552	{	759	{
553	ev_watcher_init (&sigev, sigcb);	760	ev_watcher_init (&sigev, sigcb);
		761	ev_set_priority (&sigev, EV_MAXPRI);
554	siginit ();	762	siginit (EV_A);
555		763
		764	#ifndef WIN32
556	ev_signal_init (&childev, childcb, SIGCHLD);	765	ev_signal_init (&childev, childcb, SIGCHLD);
		766	ev_set_priority (&childev, EV_MAXPRI);
557	ev_signal_start (&childev);	767	ev_signal_start (EV_A_ &childev);
		768	ev_unref (EV_A); /* child watcher should not keep loop alive */
		769	#endif
558	}	770	}
		771	else
		772	default_loop = 0;
559	}	773	}
560		774
561	return ev_method;	775	return default_loop;
562	}	776	}
563		777
564	/*****************************************************************************/
565
566	void	778	void
567	ev_fork_prepare (void)	779	ev_default_destroy (void)
568	{	780	{
569	/* nop */	781	#if EV_MULTIPLICITY
570	}	782	struct ev_loop *loop = default_loop;
571
572	void
573	ev_fork_parent (void)
574	{
575	/* nop */
576	}
577
578	void
579	ev_fork_child (void)
580	{
581	#if EV_USE_EPOLL
582	if (ev_method == EVMETHOD_EPOLL)
583	epoll_postfork_child ();
584	#endif	783	#endif
585		784
		785	ev_ref (EV_A); /* child watcher */
		786	ev_signal_stop (EV_A_ &childev);
		787
		788	ev_ref (EV_A); /* signal watcher */
586	ev_io_stop (&sigev);	789	ev_io_stop (EV_A_ &sigev);
		790
		791	close (sigpipe [0]); sigpipe [0] = 0;
		792	close (sigpipe [1]); sigpipe [1] = 0;
		793
		794	loop_destroy (EV_A);
		795	}
		796
		797	void
		798	ev_default_fork (void)
		799	{
		800	#if EV_MULTIPLICITY
		801	struct ev_loop *loop = default_loop;
		802	#endif
		803
		804	loop_fork (EV_A);
		805
		806	ev_io_stop (EV_A_ &sigev);
587	close (sigpipe [0]);	807	close (sigpipe [0]);
588	close (sigpipe [1]);	808	close (sigpipe [1]);
589	pipe (sigpipe);	809	pipe (sigpipe);
		810
		811	ev_ref (EV_A); /* signal watcher */
590	siginit ();	812	siginit (EV_A);
591	}	813	}
592		814
593	/*****************************************************************************/	815	/*****************************************************************************/
594		816
595	static void	817	static void
596	call_pending (void)	818	call_pending (EV_P)
597	{	819	{
		820	int pri;
		821
		822	for (pri = NUMPRI; pri--; )
598	while (pendingcnt)	823	while (pendingcnt [pri])
599	{	824	{
600	ANPENDING *p = pendings + --pendingcnt;	825	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
601		826
602	if (p->w)	827	if (p->w)
603	{	828	{
604	p->w->pending = 0;	829	p->w->pending = 0;
605	p->w->cb (p->w, p->events);	830	p->w->cb (EV_A_ p->w, p->events);
606	}	831	}
607	}	832	}
608	}	833	}
609		834
610	static void	835	static void
611	timers_reify (void)	836	timers_reify (EV_P)
612	{	837	{
613	while (timercnt && timers [0]->at <= now)	838	while (timercnt && ((WT)timers [0])->at <= mn_now)
614	{	839	{
615	struct ev_timer *w = timers [0];	840	struct ev_timer *w = timers [0];
		841
		842	assert (("inactive timer on timer heap detected", ev_is_active (w)));
616		843
617	/* first reschedule or stop timer */	844	/* first reschedule or stop timer */
618	if (w->repeat)	845	if (w->repeat)
619	{	846	{
620	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	847	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
621	w->at = now + w->repeat;	848	((WT)w)->at = mn_now + w->repeat;
622	downheap ((WT *)timers, timercnt, 0);	849	downheap ((WT *)timers, timercnt, 0);
623	}	850	}
624	else	851	else
625	ev_timer_stop (w); /* nonrepeating: stop timer */	852	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
626		853
627	event ((W)w, EV_TIMEOUT);	854	event (EV_A_ (W)w, EV_TIMEOUT);
628	}	855	}
629	}	856	}
630		857
631	static void	858	static void
632	periodics_reify (void)	859	periodics_reify (EV_P)
633	{	860	{
634	while (periodiccnt && periodics [0]->at <= ev_now)	861	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
635	{	862	{
636	struct ev_periodic *w = periodics [0];	863	struct ev_periodic *w = periodics [0];
		864
		865	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
637		866
638	/* first reschedule or stop timer */	867	/* first reschedule or stop timer */
639	if (w->interval)	868	if (w->interval)
640	{	869	{
641	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	870	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
642	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	871	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
643	downheap ((WT *)periodics, periodiccnt, 0);	872	downheap ((WT *)periodics, periodiccnt, 0);
644	}	873	}
645	else	874	else
646	ev_periodic_stop (w); /* nonrepeating: stop timer */	875	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
647		876
648	event ((W)w, EV_PERIODIC);	877	event (EV_A_ (W)w, EV_PERIODIC);
649	}	878	}
650	}	879	}
651		880
652	static void	881	static void
653	periodics_reschedule (ev_tstamp diff)	882	periodics_reschedule (EV_P)
654	{	883	{
655	int i;	884	int i;
656		885
657	/* adjust periodics after time jump */	886	/* adjust periodics after time jump */
658	for (i = 0; i < periodiccnt; ++i)	887	for (i = 0; i < periodiccnt; ++i)
659	{	888	{
660	struct ev_periodic *w = periodics [i];	889	struct ev_periodic *w = periodics [i];
661		890
662	if (w->interval)	891	if (w->interval)
663	{	892	{
664	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	893	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
665		894
666	if (fabs (diff) >= 1e-4)	895	if (fabs (diff) >= 1e-4)
667	{	896	{
668	ev_periodic_stop (w);	897	ev_periodic_stop (EV_A_ w);
669	ev_periodic_start (w);	898	ev_periodic_start (EV_A_ w);
670		899
671	i = 0; /* restart loop, inefficient, but time jumps should be rare */	900	i = 0; /* restart loop, inefficient, but time jumps should be rare */
672	}	901	}
673	}	902	}
674	}	903	}
675	}	904	}
676		905
677	static int	906	inline int
678	time_update_monotonic (void)	907	time_update_monotonic (EV_P)
679	{	908	{
680	now = get_clock ();	909	mn_now = get_clock ();
681		910
682	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	911	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
683	{	912	{
684	ev_now = now + diff;	913	rt_now = rtmn_diff + mn_now;
685	return 0;	914	return 0;
686	}	915	}
687	else	916	else
688	{	917	{
689	now_floor = now;	918	now_floor = mn_now;
690	ev_now = ev_time ();	919	rt_now = ev_time ();
691	return 1;	920	return 1;
692	}	921	}
693	}	922	}
694		923
695	static void	924	static void
696	time_update (void)	925	time_update (EV_P)
697	{	926	{
698	int i;	927	int i;
699		928
700	#if EV_USE_MONOTONIC	929	#if EV_USE_MONOTONIC
701	if (expect_true (have_monotonic))	930	if (expect_true (have_monotonic))
702	{	931	{
703	if (time_update_monotonic ())	932	if (time_update_monotonic (EV_A))
704	{	933	{
705	ev_tstamp odiff = diff;	934	ev_tstamp odiff = rtmn_diff;
706		935
707	for (i = 4; --i; ) /* loop a few times, before making important decisions */	936	for (i = 4; --i; ) /* loop a few times, before making important decisions */
708	{	937	{
709	diff = ev_now - now;	938	rtmn_diff = rt_now - mn_now;
710		939
711	if (fabs (odiff - diff) < MIN_TIMEJUMP)	940	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
712	return; /* all is well */	941	return; /* all is well */
713		942
714	ev_now = ev_time ();	943	rt_now = ev_time ();
715	now = get_clock ();	944	mn_now = get_clock ();
716	now_floor = now;	945	now_floor = mn_now;
717	}	946	}
718		947
719	periodics_reschedule (diff - odiff);	948	periodics_reschedule (EV_A);
720	/* no timer adjustment, as the monotonic clock doesn't jump */	949	/* no timer adjustment, as the monotonic clock doesn't jump */
		950	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
721	}	951	}
722	}	952	}
723	else	953	else
724	#endif	954	#endif
725	{	955	{
726	ev_now = ev_time ();	956	rt_now = ev_time ();
727		957
728	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	958	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
729	{	959	{
730	periodics_reschedule (ev_now - now);	960	periodics_reschedule (EV_A);
731		961
732	/* adjust timers. this is easy, as the offset is the same for all */	962	/* adjust timers. this is easy, as the offset is the same for all */
733	for (i = 0; i < timercnt; ++i)	963	for (i = 0; i < timercnt; ++i)
734	timers [i]->at += diff;	964	((WT)timers [i])->at += rt_now - mn_now;
735	}	965	}
736		966
737	now = ev_now;	967	mn_now = rt_now;
738	}	968	}
739	}	969	}
740		970
741	int ev_loop_done;	971	void
		972	ev_ref (EV_P)
		973	{
		974	++activecnt;
		975	}
742		976
		977	void
		978	ev_unref (EV_P)
		979	{
		980	--activecnt;
		981	}
		982
		983	static int loop_done;
		984
		985	void
743	void ev_loop (int flags)	986	ev_loop (EV_P_ int flags)
744	{	987	{
745	double block;	988	double block;
746	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	989	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
747		990
748	do	991	do
749	{	992	{
750	/* queue check watchers (and execute them) */	993	/* queue check watchers (and execute them) */
751	if (expect_false (preparecnt))	994	if (expect_false (preparecnt))
752	{	995	{
753	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	996	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
754	call_pending ();	997	call_pending (EV_A);
755	}	998	}
756		999
757	/* update fd-related kernel structures */	1000	/* update fd-related kernel structures */
758	fd_reify ();	1001	fd_reify (EV_A);
759		1002
760	/* calculate blocking time */	1003	/* calculate blocking time */
761		1004
762	/* we only need this for !monotonic clockor timers, but as we basically	1005	/* we only need this for !monotonic clockor timers, but as we basically
763	always have timers, we just calculate it always */	1006	always have timers, we just calculate it always */
764	#if EV_USE_MONOTONIC	1007	#if EV_USE_MONOTONIC
765	if (expect_true (have_monotonic))	1008	if (expect_true (have_monotonic))
766	time_update_monotonic ();	1009	time_update_monotonic (EV_A);
767	else	1010	else
768	#endif	1011	#endif
769	{	1012	{
770	ev_now = ev_time ();	1013	rt_now = ev_time ();
771	now = ev_now;	1014	mn_now = rt_now;
772	}	1015	}
773		1016
774	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1017	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
775	block = 0.;	1018	block = 0.;
776	else	1019	else
777	{	1020	{
778	block = MAX_BLOCKTIME;	1021	block = MAX_BLOCKTIME;
779		1022
780	if (timercnt)	1023	if (timercnt)
781	{	1024	{
782	ev_tstamp to = timers [0]->at - now + method_fudge;	1025	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
783	if (block > to) block = to;	1026	if (block > to) block = to;
784	}	1027	}
785		1028
786	if (periodiccnt)	1029	if (periodiccnt)
787	{	1030	{
788	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1031	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
789	if (block > to) block = to;	1032	if (block > to) block = to;
790	}	1033	}
791		1034
792	if (block < 0.) block = 0.;	1035	if (block < 0.) block = 0.;
793	}	1036	}
794		1037
795	method_poll (block);	1038	method_poll (EV_A_ block);
796		1039
797	/* update ev_now, do magic */	1040	/* update rt_now, do magic */
798	time_update ();	1041	time_update (EV_A);
799		1042
800	/* queue pending timers and reschedule them */	1043	/* queue pending timers and reschedule them */
801	timers_reify (); /* relative timers called last */	1044	timers_reify (EV_A); /* relative timers called last */
802	periodics_reify (); /* absolute timers called first */	1045	periodics_reify (EV_A); /* absolute timers called first */
803		1046
804	/* queue idle watchers unless io or timers are pending */	1047	/* queue idle watchers unless io or timers are pending */
805	if (!pendingcnt)	1048	if (!pendingcnt)
806	queue_events ((W *)idles, idlecnt, EV_IDLE);	1049	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
807		1050
808	/* queue check watchers, to be executed first */	1051	/* queue check watchers, to be executed first */
809	if (checkcnt)	1052	if (checkcnt)
810	queue_events ((W *)checks, checkcnt, EV_CHECK);	1053	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
811		1054
812	call_pending ();	1055	call_pending (EV_A);
813	}	1056	}
814	while (!ev_loop_done);	1057	while (activecnt && !loop_done);
815		1058
816	if (ev_loop_done != 2)	1059	if (loop_done != 2)
817	ev_loop_done = 0;	1060	loop_done = 0;
		1061	}
		1062
		1063	void
		1064	ev_unloop (EV_P_ int how)
		1065	{
		1066	loop_done = how;
818	}	1067	}
819		1068
820	/*****************************************************************************/	1069	/*****************************************************************************/
821		1070
822	static void	1071	inline void
823	wlist_add (WL *head, WL elem)	1072	wlist_add (WL *head, WL elem)
824	{	1073	{
825	elem->next = *head;	1074	elem->next = *head;
826	*head = elem;	1075	*head = elem;
827	}	1076	}
828		1077
829	static void	1078	inline void
830	wlist_del (WL *head, WL elem)	1079	wlist_del (WL *head, WL elem)
831	{	1080	{
832	while (*head)	1081	while (*head)
833	{	1082	{
834	if (*head == elem)	1083	if (*head == elem)
…		…
839		1088
840	head = &(*head)->next;	1089	head = &(*head)->next;
841	}	1090	}
842	}	1091	}
843		1092
844	static void	1093	inline void
845	ev_clear_pending (W w)	1094	ev_clear_pending (EV_P_ W w)
846	{	1095	{
847	if (w->pending)	1096	if (w->pending)
848	{	1097	{
849	pendings [w->pending - 1].w = 0;	1098	pendings [ABSPRI (w)][w->pending - 1].w = 0;
850	w->pending = 0;	1099	w->pending = 0;
851	}	1100	}
852	}	1101	}
853		1102
854	static void	1103	inline void
855	ev_start (W w, int active)	1104	ev_start (EV_P_ W w, int active)
856	{	1105	{
		1106	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1107	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1108
857	w->active = active;	1109	w->active = active;
		1110	ev_ref (EV_A);
858	}	1111	}
859		1112
860	static void	1113	inline void
861	ev_stop (W w)	1114	ev_stop (EV_P_ W w)
862	{	1115	{
		1116	ev_unref (EV_A);
863	w->active = 0;	1117	w->active = 0;
864	}	1118	}
865		1119
866	/*****************************************************************************/	1120	/*****************************************************************************/
867		1121
868	void	1122	void
869	ev_io_start (struct ev_io *w)	1123	ev_io_start (EV_P_ struct ev_io *w)
870	{	1124	{
871	int fd = w->fd;	1125	int fd = w->fd;
872		1126
873	if (ev_is_active (w))	1127	if (ev_is_active (w))
874	return;	1128	return;
875		1129
876	assert (("ev_io_start called with negative fd", fd >= 0));	1130	assert (("ev_io_start called with negative fd", fd >= 0));
877		1131
878	ev_start ((W)w, 1);	1132	ev_start (EV_A_ (W)w, 1);
879	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1133	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
880	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1134	wlist_add ((WL *)&anfds[fd].head, (WL)w);
881		1135
882	fd_change (fd);	1136	fd_change (EV_A_ fd);
883	}	1137	}
884		1138
885	void	1139	void
886	ev_io_stop (struct ev_io *w)	1140	ev_io_stop (EV_P_ struct ev_io *w)
887	{	1141	{
888	ev_clear_pending ((W)w);	1142	ev_clear_pending (EV_A_ (W)w);
889	if (!ev_is_active (w))	1143	if (!ev_is_active (w))
890	return;	1144	return;
891		1145
892	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1146	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
893	ev_stop ((W)w);	1147	ev_stop (EV_A_ (W)w);
894		1148
895	fd_change (w->fd);	1149	fd_change (EV_A_ w->fd);
896	}	1150	}
897		1151
898	void	1152	void
899	ev_timer_start (struct ev_timer *w)	1153	ev_timer_start (EV_P_ struct ev_timer *w)
900	{	1154	{
901	if (ev_is_active (w))	1155	if (ev_is_active (w))
902	return;	1156	return;
903		1157
904	w->at += now;	1158	((WT)w)->at += mn_now;
905		1159
906	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1160	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
907		1161
908	ev_start ((W)w, ++timercnt);	1162	ev_start (EV_A_ (W)w, ++timercnt);
909	array_needsize (timers, timermax, timercnt, );	1163	array_needsize (timers, timermax, timercnt, );
910	timers [timercnt - 1] = w;	1164	timers [timercnt - 1] = w;
911	upheap ((WT *)timers, timercnt - 1);	1165	upheap ((WT *)timers, timercnt - 1);
912	}
913		1166
		1167	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1168	}
		1169
914	void	1170	void
915	ev_timer_stop (struct ev_timer *w)	1171	ev_timer_stop (EV_P_ struct ev_timer *w)
916	{	1172	{
917	ev_clear_pending ((W)w);	1173	ev_clear_pending (EV_A_ (W)w);
918	if (!ev_is_active (w))	1174	if (!ev_is_active (w))
919	return;	1175	return;
920		1176
		1177	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1178
921	if (w->active < timercnt--)	1179	if (((W)w)->active < timercnt--)
922	{	1180	{
923	timers [w->active - 1] = timers [timercnt];	1181	timers [((W)w)->active - 1] = timers [timercnt];
924	downheap ((WT *)timers, timercnt, w->active - 1);	1182	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
925	}	1183	}
926		1184
927	w->at = w->repeat;	1185	((WT)w)->at = w->repeat;
928		1186
929	ev_stop ((W)w);	1187	ev_stop (EV_A_ (W)w);
930	}	1188	}
931		1189
932	void	1190	void
933	ev_timer_again (struct ev_timer *w)	1191	ev_timer_again (EV_P_ struct ev_timer *w)
934	{	1192	{
935	if (ev_is_active (w))	1193	if (ev_is_active (w))
936	{	1194	{
937	if (w->repeat)	1195	if (w->repeat)
938	{	1196	{
939	w->at = now + w->repeat;	1197	((WT)w)->at = mn_now + w->repeat;
940	downheap ((WT *)timers, timercnt, w->active - 1);	1198	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
941	}	1199	}
942	else	1200	else
943	ev_timer_stop (w);	1201	ev_timer_stop (EV_A_ w);
944	}	1202	}
945	else if (w->repeat)	1203	else if (w->repeat)
946	ev_timer_start (w);	1204	ev_timer_start (EV_A_ w);
947	}	1205	}
948		1206
949	void	1207	void
950	ev_periodic_start (struct ev_periodic *w)	1208	ev_periodic_start (EV_P_ struct ev_periodic *w)
951	{	1209	{
952	if (ev_is_active (w))	1210	if (ev_is_active (w))
953	return;	1211	return;
954		1212
955	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1213	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
956		1214
957	/* this formula differs from the one in periodic_reify because we do not always round up */	1215	/* this formula differs from the one in periodic_reify because we do not always round up */
958	if (w->interval)	1216	if (w->interval)
959	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1217	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
960		1218
961	ev_start ((W)w, ++periodiccnt);	1219	ev_start (EV_A_ (W)w, ++periodiccnt);
962	array_needsize (periodics, periodicmax, periodiccnt, );	1220	array_needsize (periodics, periodicmax, periodiccnt, );
963	periodics [periodiccnt - 1] = w;	1221	periodics [periodiccnt - 1] = w;
964	upheap ((WT *)periodics, periodiccnt - 1);	1222	upheap ((WT *)periodics, periodiccnt - 1);
965	}
966		1223
		1224	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1225	}
		1226
967	void	1227	void
968	ev_periodic_stop (struct ev_periodic *w)	1228	ev_periodic_stop (EV_P_ struct ev_periodic *w)
969	{	1229	{
970	ev_clear_pending ((W)w);	1230	ev_clear_pending (EV_A_ (W)w);
971	if (!ev_is_active (w))	1231	if (!ev_is_active (w))
972	return;	1232	return;
973		1233
		1234	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1235
974	if (w->active < periodiccnt--)	1236	if (((W)w)->active < periodiccnt--)
975	{	1237	{
976	periodics [w->active - 1] = periodics [periodiccnt];	1238	periodics [((W)w)->active - 1] = periodics [periodiccnt];
977	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1239	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
978	}	1240	}
979		1241
980	ev_stop ((W)w);	1242	ev_stop (EV_A_ (W)w);
981	}	1243	}
982		1244
983	void	1245	void
984	ev_signal_start (struct ev_signal *w)	1246	ev_idle_start (EV_P_ struct ev_idle *w)
985	{	1247	{
986	if (ev_is_active (w))	1248	if (ev_is_active (w))
987	return;	1249	return;
988		1250
		1251	ev_start (EV_A_ (W)w, ++idlecnt);
		1252	array_needsize (idles, idlemax, idlecnt, );
		1253	idles [idlecnt - 1] = w;
		1254	}
		1255
		1256	void
		1257	ev_idle_stop (EV_P_ struct ev_idle *w)
		1258	{
		1259	ev_clear_pending (EV_A_ (W)w);
		1260	if (ev_is_active (w))
		1261	return;
		1262
		1263	idles [((W)w)->active - 1] = idles [--idlecnt];
		1264	ev_stop (EV_A_ (W)w);
		1265	}
		1266
		1267	void
		1268	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1269	{
		1270	if (ev_is_active (w))
		1271	return;
		1272
		1273	ev_start (EV_A_ (W)w, ++preparecnt);
		1274	array_needsize (prepares, preparemax, preparecnt, );
		1275	prepares [preparecnt - 1] = w;
		1276	}
		1277
		1278	void
		1279	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1280	{
		1281	ev_clear_pending (EV_A_ (W)w);
		1282	if (ev_is_active (w))
		1283	return;
		1284
		1285	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1286	ev_stop (EV_A_ (W)w);
		1287	}
		1288
		1289	void
		1290	ev_check_start (EV_P_ struct ev_check *w)
		1291	{
		1292	if (ev_is_active (w))
		1293	return;
		1294
		1295	ev_start (EV_A_ (W)w, ++checkcnt);
		1296	array_needsize (checks, checkmax, checkcnt, );
		1297	checks [checkcnt - 1] = w;
		1298	}
		1299
		1300	void
		1301	ev_check_stop (EV_P_ struct ev_check *w)
		1302	{
		1303	ev_clear_pending (EV_A_ (W)w);
		1304	if (ev_is_active (w))
		1305	return;
		1306
		1307	checks [((W)w)->active - 1] = checks [--checkcnt];
		1308	ev_stop (EV_A_ (W)w);
		1309	}
		1310
		1311	#ifndef SA_RESTART
		1312	# define SA_RESTART 0
		1313	#endif
		1314
		1315	void
		1316	ev_signal_start (EV_P_ struct ev_signal *w)
		1317	{
		1318	#if EV_MULTIPLICITY
		1319	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1320	#endif
		1321	if (ev_is_active (w))
		1322	return;
		1323
989	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1324	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
990		1325
991	ev_start ((W)w, 1);	1326	ev_start (EV_A_ (W)w, 1);
992	array_needsize (signals, signalmax, w->signum, signals_init);	1327	array_needsize (signals, signalmax, w->signum, signals_init);
993	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1328	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
994		1329
995	if (!w->next)	1330	if (!((WL)w)->next)
996	{	1331	{
		1332	#if WIN32
		1333	signal (w->signum, sighandler);
		1334	#else
997	struct sigaction sa;	1335	struct sigaction sa;
998	sa.sa_handler = sighandler;	1336	sa.sa_handler = sighandler;
999	sigfillset (&sa.sa_mask);	1337	sigfillset (&sa.sa_mask);
1000	sa.sa_flags = 0;	1338	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1001	sigaction (w->signum, &sa, 0);	1339	sigaction (w->signum, &sa, 0);
		1340	#endif
1002	}	1341	}
1003	}	1342	}
1004		1343
1005	void	1344	void
1006	ev_signal_stop (struct ev_signal *w)	1345	ev_signal_stop (EV_P_ struct ev_signal *w)
1007	{	1346	{
1008	ev_clear_pending ((W)w);	1347	ev_clear_pending (EV_A_ (W)w);
1009	if (!ev_is_active (w))	1348	if (!ev_is_active (w))
1010	return;	1349	return;
1011		1350
1012	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1351	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1013	ev_stop ((W)w);	1352	ev_stop (EV_A_ (W)w);
1014		1353
1015	if (!signals [w->signum - 1].head)	1354	if (!signals [w->signum - 1].head)
1016	signal (w->signum, SIG_DFL);	1355	signal (w->signum, SIG_DFL);
1017	}	1356	}
1018		1357
1019	void	1358	void
1020	ev_idle_start (struct ev_idle *w)	1359	ev_child_start (EV_P_ struct ev_child *w)
1021	{	1360	{
		1361	#if EV_MULTIPLICITY
		1362	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1363	#endif
1022	if (ev_is_active (w))	1364	if (ev_is_active (w))
1023	return;	1365	return;
1024		1366
1025	ev_start ((W)w, ++idlecnt);	1367	ev_start (EV_A_ (W)w, 1);
1026	array_needsize (idles, idlemax, idlecnt, );	1368	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1027	idles [idlecnt - 1] = w;
1028	}	1369	}
1029		1370
1030	void	1371	void
1031	ev_idle_stop (struct ev_idle *w)	1372	ev_child_stop (EV_P_ struct ev_child *w)
1032	{	1373	{
1033	ev_clear_pending ((W)w);	1374	ev_clear_pending (EV_A_ (W)w);
1034	if (ev_is_active (w))	1375	if (ev_is_active (w))
1035	return;	1376	return;
1036		1377
1037	idles [w->active - 1] = idles [--idlecnt];
1038	ev_stop ((W)w);
1039	}
1040
1041	void
1042	ev_prepare_start (struct ev_prepare *w)
1043	{
1044	if (ev_is_active (w))
1045	return;
1046
1047	ev_start ((W)w, ++preparecnt);
1048	array_needsize (prepares, preparemax, preparecnt, );
1049	prepares [preparecnt - 1] = w;
1050	}
1051
1052	void
1053	ev_prepare_stop (struct ev_prepare *w)
1054	{
1055	ev_clear_pending ((W)w);
1056	if (ev_is_active (w))
1057	return;
1058
1059	prepares [w->active - 1] = prepares [--preparecnt];
1060	ev_stop ((W)w);
1061	}
1062
1063	void
1064	ev_check_start (struct ev_check *w)
1065	{
1066	if (ev_is_active (w))
1067	return;
1068
1069	ev_start ((W)w, ++checkcnt);
1070	array_needsize (checks, checkmax, checkcnt, );
1071	checks [checkcnt - 1] = w;
1072	}
1073
1074	void
1075	ev_check_stop (struct ev_check *w)
1076	{
1077	ev_clear_pending ((W)w);
1078	if (ev_is_active (w))
1079	return;
1080
1081	checks [w->active - 1] = checks [--checkcnt];
1082	ev_stop ((W)w);
1083	}
1084
1085	void
1086	ev_child_start (struct ev_child *w)
1087	{
1088	if (ev_is_active (w))
1089	return;
1090
1091	ev_start ((W)w, 1);
1092	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1093	}
1094
1095	void
1096	ev_child_stop (struct ev_child *w)
1097	{
1098	ev_clear_pending ((W)w);
1099	if (ev_is_active (w))
1100	return;
1101
1102	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1378	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1103	ev_stop ((W)w);	1379	ev_stop (EV_A_ (W)w);
1104	}	1380	}
1105		1381
1106	/*****************************************************************************/	1382	/*****************************************************************************/
1107		1383
1108	struct ev_once	1384	struct ev_once
…		…
1112	void (cb)(int revents, void arg);	1388	void (cb)(int revents, void arg);
1113	void *arg;	1389	void *arg;
1114	};	1390	};
1115		1391
1116	static void	1392	static void
1117	once_cb (struct ev_once *once, int revents)	1393	once_cb (EV_P_ struct ev_once *once, int revents)
1118	{	1394	{
1119	void (cb)(int revents, void arg) = once->cb;	1395	void (cb)(int revents, void arg) = once->cb;
1120	void *arg = once->arg;	1396	void *arg = once->arg;
1121		1397
1122	ev_io_stop (&once->io);	1398	ev_io_stop (EV_A_ &once->io);
1123	ev_timer_stop (&once->to);	1399	ev_timer_stop (EV_A_ &once->to);
1124	free (once);	1400	free (once);
1125		1401
1126	cb (revents, arg);	1402	cb (revents, arg);
1127	}	1403	}
1128		1404
1129	static void	1405	static void
1130	once_cb_io (struct ev_io *w, int revents)	1406	once_cb_io (EV_P_ struct ev_io *w, int revents)
1131	{	1407	{
1132	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1408	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1133	}	1409	}
1134		1410
1135	static void	1411	static void
1136	once_cb_to (struct ev_timer *w, int revents)	1412	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1137	{	1413	{
1138	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1414	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1139	}	1415	}
1140		1416
1141	void	1417	void
1142	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1418	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1143	{	1419	{
1144	struct ev_once *once = malloc (sizeof (struct ev_once));	1420	struct ev_once *once = malloc (sizeof (struct ev_once));
1145		1421
1146	if (!once)	1422	if (!once)
1147	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1423	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
…		…
1152		1428
1153	ev_watcher_init (&once->io, once_cb_io);	1429	ev_watcher_init (&once->io, once_cb_io);
1154	if (fd >= 0)	1430	if (fd >= 0)
1155	{	1431	{
1156	ev_io_set (&once->io, fd, events);	1432	ev_io_set (&once->io, fd, events);
1157	ev_io_start (&once->io);	1433	ev_io_start (EV_A_ &once->io);
1158	}	1434	}
1159		1435
1160	ev_watcher_init (&once->to, once_cb_to);	1436	ev_watcher_init (&once->to, once_cb_to);
1161	if (timeout >= 0.)	1437	if (timeout >= 0.)
1162	{	1438	{
1163	ev_timer_set (&once->to, timeout, 0.);	1439	ev_timer_set (&once->to, timeout, 0.);
1164	ev_timer_start (&once->to);	1440	ev_timer_start (EV_A_ &once->to);
1165	}	1441	}
1166	}	1442	}
1167	}	1443	}
1168		1444
1169	/*****************************************************************************/
1170
1171	#if 0
1172
1173	struct ev_io wio;
1174
1175	static void
1176	sin_cb (struct ev_io *w, int revents)
1177	{
1178	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1179	}
1180
1181	static void
1182	ocb (struct ev_timer *w, int revents)
1183	{
1184	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1185	ev_timer_stop (w);
1186	ev_timer_start (w);
1187	}
1188
1189	static void
1190	scb (struct ev_signal *w, int revents)
1191	{
1192	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1193	ev_io_stop (&wio);
1194	ev_io_start (&wio);
1195	}
1196
1197	static void
1198	gcb (struct ev_signal *w, int revents)
1199	{
1200	fprintf (stderr, "generic %x\n", revents);
1201
1202	}
1203
1204	int main (void)
1205	{
1206	ev_init (0);
1207
1208	ev_io_init (&wio, sin_cb, 0, EV_READ);
1209	ev_io_start (&wio);
1210
1211	struct ev_timer t[10000];
1212
1213	#if 0
1214	int i;
1215	for (i = 0; i < 10000; ++i)
1216	{
1217	struct ev_timer *w = t + i;
1218	ev_watcher_init (w, ocb, i);
1219	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1220	ev_timer_start (w);
1221	if (drand48 () < 0.5)
1222	ev_timer_stop (w);
1223	}
1224	#endif
1225
1226	struct ev_timer t1;
1227	ev_timer_init (&t1, ocb, 5, 10);
1228	ev_timer_start (&t1);
1229
1230	struct ev_signal sig;
1231	ev_signal_init (&sig, scb, SIGQUIT);
1232	ev_signal_start (&sig);
1233
1234	struct ev_check cw;
1235	ev_check_init (&cw, gcb);
1236	ev_check_start (&cw);
1237
1238	struct ev_idle iw;
1239	ev_idle_init (&iw, gcb);
1240	ev_idle_start (&iw);
1241
1242	ev_loop (0);
1243
1244	return 0;
1245	}
1246
1247	#endif
1248
1249
1250
1251

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Comparing libev/ev.c (file contents): Revision 1.41 by root, Fri Nov 2 16:54:34 2007 UTC vs. Revision 1.68 by root, Mon Nov 5 20:19:00 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.41 by root, Fri Nov 2 16:54:34 2007 UTC vs.
Revision 1.68 by root, Mon Nov 5 20:19:00 2007 UTC