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

Comparing libev/ev.c (file contents):
Revision 1.46 by root, Sat Nov 3 09:20:12 2007 UTC vs.
Revision 1.74 by root, Tue Nov 6 16:51:20 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>
38	#include <fcntl.h>	59	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	60	#include <stddef.h>
41		61
42	#include <stdio.h>	62	#include <stdio.h>
43		63
44	#include <assert.h>	64	#include <assert.h>
45	#include <errno.h>	65	#include <errno.h>
46	#include <sys/types.h>	66	#include <sys/types.h>
		67	#include <time.h>
		68
		69	#include <signal.h>
		70
47	#ifndef WIN32	71	#ifndef WIN32
		72	# include <unistd.h>
		73	# include <sys/time.h>
48	# include <sys/wait.h>	74	# include <sys/wait.h>
49	#endif	75	#endif
50	#include <sys/time.h>
51	#include <time.h>
52
53	/**/	76	/**/
54		77
55	#ifndef EV_USE_MONOTONIC	78	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	79	# define EV_USE_MONOTONIC 1
57	#endif	80	#endif
…		…
68	# define EV_USE_EPOLL 0	91	# define EV_USE_EPOLL 0
69	#endif	92	#endif
70		93
71	#ifndef EV_USE_KQUEUE	94	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	95	# define EV_USE_KQUEUE 0
		96	#endif
		97
		98	#ifndef EV_USE_WIN32
		99	# ifdef WIN32
		100	# define EV_USE_WIN32 0 /* it does not exist, use select */
		101	# undef EV_USE_SELECT
		102	# define EV_USE_SELECT 1
		103	# else
		104	# define EV_USE_WIN32 0
		105	# endif
73	#endif	106	#endif
74		107
75	#ifndef EV_USE_REALTIME	108	#ifndef EV_USE_REALTIME
76	# define EV_USE_REALTIME 1	109	# define EV_USE_REALTIME 1
77	#endif	110	#endif
…		…
113		146
114	typedef struct ev_watcher *W;	147	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	148	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	149	typedef struct ev_watcher_time *WT;
117		150
118	static ev_tstamp now_floor, now, diff; /* monotonic clock */	151	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119	ev_tstamp ev_now;
120	int ev_method;
121		152
122	static int have_monotonic; /* runtime */	153	#include "ev_win32.c"
123
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
125	static void (*method_modify)(int fd, int oev, int nev);
126	static void (*method_poll)(ev_tstamp timeout);
127		154
128	/*****************************************************************************/	155	/*****************************************************************************/
129		156
130	ev_tstamp	157	static void (syserr_cb)(const char msg);
		158
		159	void ev_set_syserr_cb (void (cb)(const char msg))
		160	{
		161	syserr_cb = cb;
		162	}
		163
		164	static void
		165	syserr (const char *msg)
		166	{
		167	if (!msg)
		168	msg = "(libev) system error";
		169
		170	if (syserr_cb)
		171	syserr_cb (msg);
		172	else
		173	{
		174	perror (msg);
		175	abort ();
		176	}
		177	}
		178
		179	static void (alloc)(void *ptr, long size);
		180
		181	void ev_set_allocator (void (cb)(void *ptr, long size))
		182	{
		183	alloc = cb;
		184	}
		185
		186	static void *
		187	ev_realloc (void *ptr, long size)
		188	{
		189	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		190
		191	if (!ptr && size)
		192	{
		193	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		194	abort ();
		195	}
		196
		197	return ptr;
		198	}
		199
		200	#define ev_malloc(size) ev_realloc (0, (size))
		201	#define ev_free(ptr) ev_realloc ((ptr), 0)
		202
		203	/*****************************************************************************/
		204
		205	typedef struct
		206	{
		207	WL head;
		208	unsigned char events;
		209	unsigned char reify;
		210	} ANFD;
		211
		212	typedef struct
		213	{
		214	W w;
		215	int events;
		216	} ANPENDING;
		217
		218	#if EV_MULTIPLICITY
		219
		220	struct ev_loop
		221	{
		222	# define VAR(name,decl) decl;
		223	# include "ev_vars.h"
		224	};
		225	# undef VAR
		226	# include "ev_wrap.h"
		227
		228	#else
		229
		230	# define VAR(name,decl) static decl;
		231	# include "ev_vars.h"
		232	# undef VAR
		233
		234	#endif
		235
		236	/*****************************************************************************/
		237
		238	inline ev_tstamp
131	ev_time (void)	239	ev_time (void)
132	{	240	{
133	#if EV_USE_REALTIME	241	#if EV_USE_REALTIME
134	struct timespec ts;	242	struct timespec ts;
135	clock_gettime (CLOCK_REALTIME, &ts);	243	clock_gettime (CLOCK_REALTIME, &ts);
…		…
139	gettimeofday (&tv, 0);	247	gettimeofday (&tv, 0);
140	return tv.tv_sec + tv.tv_usec * 1e-6;	248	return tv.tv_sec + tv.tv_usec * 1e-6;
141	#endif	249	#endif
142	}	250	}
143		251
144	static ev_tstamp	252	inline ev_tstamp
145	get_clock (void)	253	get_clock (void)
146	{	254	{
147	#if EV_USE_MONOTONIC	255	#if EV_USE_MONOTONIC
148	if (expect_true (have_monotonic))	256	if (expect_true (have_monotonic))
149	{	257	{
…		…
154	#endif	262	#endif
155		263
156	return ev_time ();	264	return ev_time ();
157	}	265	}
158		266
		267	ev_tstamp
		268	ev_now (EV_P)
		269	{
		270	return rt_now;
		271	}
		272
159	#define array_roundsize(base,n) ((n) \| 4 & ~3)	273	#define array_roundsize(type,n) ((n) \| 4 & ~3)
160		274
161	#define array_needsize(base,cur,cnt,init) \	275	#define array_needsize(type,base,cur,cnt,init) \
162	if (expect_false ((cnt) > cur)) \	276	if (expect_false ((cnt) > cur)) \
163	{ \	277	{ \
164	int newcnt = cur; \	278	int newcnt = cur; \
165	do \	279	do \
166	{ \	280	{ \
167	newcnt = array_roundsize (base, newcnt << 1); \	281	newcnt = array_roundsize (type, newcnt << 1); \
168	} \	282	} \
169	while ((cnt) > newcnt); \	283	while ((cnt) > newcnt); \
170	\	284	\
171	base = realloc (base, sizeof (base) (newcnt)); \	285	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
172	init (base + cur, newcnt - cur); \	286	init (base + cur, newcnt - cur); \
173	cur = newcnt; \	287	cur = newcnt; \
174	}	288	}
		289
		290	#define array_slim(type,stem) \
		291	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		292	{ \
		293	stem ## max = array_roundsize (stem ## cnt >> 1); \
		294	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		295	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		296	}
		297
		298	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
		299	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
		300	#define array_free_microshit(stem) \
		301	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
		302
		303	#define array_free(stem, idx) \
		304	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
175		305
176	/*****************************************************************************/	306	/*****************************************************************************/
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		307
188	static void	308	static void
189	anfds_init (ANFD *base, int count)	309	anfds_init (ANFD *base, int count)
190	{	310	{
191	while (count--)	311	while (count--)
…		…
196		316
197	++base;	317	++base;
198	}	318	}
199	}	319	}
200		320
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	321	static void
211	event (W w, int events)	322	event (EV_P_ W w, int events)
212	{	323	{
213	if (w->pending)	324	if (w->pending)
214	{	325	{
215	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	326	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
216	return;	327	return;
217	}	328	}
218		329
219	w->pending = ++pendingcnt [ABSPRI (w)];	330	w->pending = ++pendingcnt [ABSPRI (w)];
220	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	331	array_needsize (ANPENDING, pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));
221	pendings [ABSPRI (w)][w->pending - 1].w = w;	332	pendings [ABSPRI (w)][w->pending - 1].w = w;
222	pendings [ABSPRI (w)][w->pending - 1].events = events;	333	pendings [ABSPRI (w)][w->pending - 1].events = events;
223	}	334	}
224		335
225	static void	336	static void
226	queue_events (W *events, int eventcnt, int type)	337	queue_events (EV_P_ W *events, int eventcnt, int type)
227	{	338	{
228	int i;	339	int i;
229		340
230	for (i = 0; i < eventcnt; ++i)	341	for (i = 0; i < eventcnt; ++i)
231	event (events [i], type);	342	event (EV_A_ events [i], type);
232	}	343	}
233		344
234	static void	345	static void
235	fd_event (int fd, int events)	346	fd_event (EV_P_ int fd, int events)
236	{	347	{
237	ANFD *anfd = anfds + fd;	348	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	349	struct ev_io *w;
239		350
240	for (w = anfd->head; w; w = w->next)	351	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
241	{	352	{
242	int ev = w->events & events;	353	int ev = w->events & events;
243		354
244	if (ev)	355	if (ev)
245	event ((W)w, ev);	356	event (EV_A_ (W)w, ev);
246	}	357	}
247	}	358	}
248		359
249	/*****************************************************************************/	360	/*****************************************************************************/
250		361
251	static int *fdchanges;
252	static int fdchangemax, fdchangecnt;
253
254	static void	362	static void
255	fd_reify (void)	363	fd_reify (EV_P)
256	{	364	{
257	int i;	365	int i;
258		366
259	for (i = 0; i < fdchangecnt; ++i)	367	for (i = 0; i < fdchangecnt; ++i)
260	{	368	{
…		…
262	ANFD *anfd = anfds + fd;	370	ANFD *anfd = anfds + fd;
263	struct ev_io *w;	371	struct ev_io *w;
264		372
265	int events = 0;	373	int events = 0;
266		374
267	for (w = anfd->head; w; w = w->next)	375	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
268	events \|= w->events;	376	events \|= w->events;
269		377
270	anfd->reify = 0;	378	anfd->reify = 0;
271		379
272	if (anfd->events != events)
273	{
274	method_modify (fd, anfd->events, events);	380	method_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	381	anfd->events = events;
276	}
277	}	382	}
278		383
279	fdchangecnt = 0;	384	fdchangecnt = 0;
280	}	385	}
281		386
282	static void	387	static void
283	fd_change (int fd)	388	fd_change (EV_P_ int fd)
284	{	389	{
285	if (anfds [fd].reify \|\| fdchangecnt < 0)	390	if (anfds [fd].reify)
286	return;	391	return;
287		392
288	anfds [fd].reify = 1;	393	anfds [fd].reify = 1;
289		394
290	++fdchangecnt;	395	++fdchangecnt;
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	396	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
292	fdchanges [fdchangecnt - 1] = fd;	397	fdchanges [fdchangecnt - 1] = fd;
293	}	398	}
294		399
295	static void	400	static void
296	fd_kill (int fd)	401	fd_kill (EV_P_ int fd)
297	{	402	{
298	struct ev_io *w;	403	struct ev_io *w;
299		404
300	printf ("killing fd %d\n", fd);//D
301	while ((w = anfds [fd].head))	405	while ((w = (struct ev_io *)anfds [fd].head))
302	{	406	{
303	ev_io_stop (w);	407	ev_io_stop (EV_A_ w);
304	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	408	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
305	}	409	}
		410	}
		411
		412	static int
		413	fd_valid (int fd)
		414	{
		415	#ifdef WIN32
		416	return !!win32_get_osfhandle (fd);
		417	#else
		418	return fcntl (fd, F_GETFD) != -1;
		419	#endif
306	}	420	}
307		421
308	/* called on EBADF to verify fds */	422	/* called on EBADF to verify fds */
309	static void	423	static void
310	fd_ebadf (void)	424	fd_ebadf (EV_P)
311	{	425	{
312	int fd;	426	int fd;
313		427
314	for (fd = 0; fd < anfdmax; ++fd)	428	for (fd = 0; fd < anfdmax; ++fd)
315	if (anfds [fd].events)	429	if (anfds [fd].events)
316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	430	if (!fd_valid (fd) == -1 && errno == EBADF)
317	fd_kill (fd);	431	fd_kill (EV_A_ fd);
318	}	432	}
319		433
320	/* called on ENOMEM in select/poll to kill some fds and retry */	434	/* called on ENOMEM in select/poll to kill some fds and retry */
321	static void	435	static void
322	fd_enomem (void)	436	fd_enomem (EV_P)
323	{	437	{
324	int fd = anfdmax;	438	int fd;
325		439
326	while (fd--)	440	for (fd = anfdmax; fd--; )
327	if (anfds [fd].events)	441	if (anfds [fd].events)
328	{	442	{
329	close (fd);
330	fd_kill (fd);	443	fd_kill (EV_A_ fd);
331	return;	444	return;
332	}	445	}
333	}	446	}
334		447
		448	/* usually called after fork if method needs to re-arm all fds from scratch */
		449	static void
		450	fd_rearm_all (EV_P)
		451	{
		452	int fd;
		453
		454	/* this should be highly optimised to not do anything but set a flag */
		455	for (fd = 0; fd < anfdmax; ++fd)
		456	if (anfds [fd].events)
		457	{
		458	anfds [fd].events = 0;
		459	fd_change (EV_A_ fd);
		460	}
		461	}
		462
335	/*****************************************************************************/	463	/*****************************************************************************/
336		464
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	465	static void
344	upheap (WT *timers, int k)	466	upheap (WT *heap, int k)
345	{	467	{
346	WT w = timers [k];	468	WT w = heap [k];
347		469
348	while (k && timers [k >> 1]->at > w->at)	470	while (k && heap [k >> 1]->at > w->at)
349	{	471	{
350	timers [k] = timers [k >> 1];	472	heap [k] = heap [k >> 1];
351	timers [k]->active = k + 1;	473	((W)heap [k])->active = k + 1;
352	k >>= 1;	474	k >>= 1;
353	}	475	}
354		476
355	timers [k] = w;	477	heap [k] = w;
356	timers [k]->active = k + 1;	478	((W)heap [k])->active = k + 1;
357		479
358	}	480	}
359		481
360	static void	482	static void
361	downheap (WT *timers, int N, int k)	483	downheap (WT *heap, int N, int k)
362	{	484	{
363	WT w = timers [k];	485	WT w = heap [k];
364		486
365	while (k < (N >> 1))	487	while (k < (N >> 1))
366	{	488	{
367	int j = k << 1;	489	int j = k << 1;
368		490
369	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	491	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
370	++j;	492	++j;
371		493
372	if (w->at <= timers [j]->at)	494	if (w->at <= heap [j]->at)
373	break;	495	break;
374		496
375	timers [k] = timers [j];	497	heap [k] = heap [j];
376	timers [k]->active = k + 1;	498	((W)heap [k])->active = k + 1;
377	k = j;	499	k = j;
378	}	500	}
379		501
380	timers [k] = w;	502	heap [k] = w;
381	timers [k]->active = k + 1;	503	((W)heap [k])->active = k + 1;
382	}	504	}
383		505
384	/*****************************************************************************/	506	/*****************************************************************************/
385		507
386	typedef struct	508	typedef struct
387	{	509	{
388	struct ev_signal *head;	510	WL head;
389	sig_atomic_t volatile gotsig;	511	sig_atomic_t volatile gotsig;
390	} ANSIG;	512	} ANSIG;
391		513
392	static ANSIG *signals;	514	static ANSIG *signals;
393	static int signalmax;	515	static int signalmax;
…		…
409	}	531	}
410		532
411	static void	533	static void
412	sighandler (int signum)	534	sighandler (int signum)
413	{	535	{
		536	#if WIN32
		537	signal (signum, sighandler);
		538	#endif
		539
414	signals [signum - 1].gotsig = 1;	540	signals [signum - 1].gotsig = 1;
415		541
416	if (!gotsig)	542	if (!gotsig)
417	{	543	{
		544	int old_errno = errno;
418	gotsig = 1;	545	gotsig = 1;
419	write (sigpipe [1], &signum, 1);	546	write (sigpipe [1], &signum, 1);
		547	errno = old_errno;
420	}	548	}
421	}	549	}
422		550
423	static void	551	static void
424	sigcb (struct ev_io *iow, int revents)	552	sigcb (EV_P_ struct ev_io *iow, int revents)
425	{	553	{
426	struct ev_signal *w;	554	WL w;
427	int signum;	555	int signum;
428		556
429	read (sigpipe [0], &revents, 1);	557	read (sigpipe [0], &revents, 1);
430	gotsig = 0;	558	gotsig = 0;
431		559
…		…
433	if (signals [signum].gotsig)	561	if (signals [signum].gotsig)
434	{	562	{
435	signals [signum].gotsig = 0;	563	signals [signum].gotsig = 0;
436		564
437	for (w = signals [signum].head; w; w = w->next)	565	for (w = signals [signum].head; w; w = w->next)
438	event ((W)w, EV_SIGNAL);	566	event (EV_A_ (W)w, EV_SIGNAL);
439	}	567	}
440	}	568	}
441		569
442	static void	570	static void
443	siginit (void)	571	siginit (EV_P)
444	{	572	{
445	#ifndef WIN32	573	#ifndef WIN32
446	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	574	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
447	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	575	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
448		576
…		…
450	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	578	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
451	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	579	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
452	#endif	580	#endif
453		581
454	ev_io_set (&sigev, sigpipe [0], EV_READ);	582	ev_io_set (&sigev, sigpipe [0], EV_READ);
455	ev_io_start (&sigev);	583	ev_io_start (EV_A_ &sigev);
		584	ev_unref (EV_A); /* child watcher should not keep loop alive */
456	}	585	}
457		586
458	/*****************************************************************************/	587	/*****************************************************************************/
459		588
460	static struct ev_idle **idles;
461	static int idlemax, idlecnt;
462
463	static struct ev_prepare **prepares;
464	static int preparemax, preparecnt;
465
466	static struct ev_check **checks;
467	static int checkmax, checkcnt;
468
469	/*****************************************************************************/
470
471	static struct ev_child *childs [PID_HASHSIZE];	589	static struct ev_child *childs [PID_HASHSIZE];
		590
		591	#ifndef WIN32
		592
472	static struct ev_signal childev;	593	static struct ev_signal childev;
473
474	#ifndef WIN32
475		594
476	#ifndef WCONTINUED	595	#ifndef WCONTINUED
477	# define WCONTINUED 0	596	# define WCONTINUED 0
478	#endif	597	#endif
479		598
480	static void	599	static void
481	childcb (struct ev_signal *sw, int revents)	600	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
482	{	601	{
483	struct ev_child *w;	602	struct ev_child *w;
		603
		604	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		605	if (w->pid == pid \|\| !w->pid)
		606	{
		607	ev_priority (w) = ev_priority (sw); /* need to do it now */
		608	w->rpid = pid;
		609	w->rstatus = status;
		610	event (EV_A_ (W)w, EV_CHILD);
		611	}
		612	}
		613
		614	static void
		615	childcb (EV_P_ struct ev_signal *sw, int revents)
		616	{
484	int pid, status;	617	int pid, status;
485		618
486	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	619	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
487	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	620	{
488	if (w->pid == pid \|\| !w->pid)	621	/* make sure we are called again until all childs have been reaped */
489	{	622	event (EV_A_ (W)sw, EV_SIGNAL);
490	w->rpid = pid;	623
491	w->rstatus = status;	624	child_reap (EV_A_ sw, pid, pid, status);
492	event ((W)w, EV_CHILD);	625	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
493	}	626	}
494	}	627	}
495		628
496	#endif	629	#endif
497		630
498	/*****************************************************************************/	631	/*****************************************************************************/
…		…
520	ev_version_minor (void)	653	ev_version_minor (void)
521	{	654	{
522	return EV_VERSION_MINOR;	655	return EV_VERSION_MINOR;
523	}	656	}
524		657
525	/* return true if we are running with elevated privileges and ignore env variables */	658	/* return true if we are running with elevated privileges and should ignore env variables */
526	static int	659	static int
527	enable_secure ()	660	enable_secure (void)
528	{	661	{
		662	#ifdef WIN32
		663	return 0;
		664	#else
529	return getuid () != geteuid ()	665	return getuid () != geteuid ()
530	\|\| getgid () != getegid ();	666	\|\| getgid () != getegid ();
		667	#endif
531	}	668	}
532		669
533	int ev_init (int methods)	670	int
		671	ev_method (EV_P)
534	{	672	{
		673	return method;
		674	}
		675
		676	static void
		677	loop_init (EV_P_ int methods)
		678	{
535	if (!ev_method)	679	if (!method)
536	{	680	{
537	#if EV_USE_MONOTONIC	681	#if EV_USE_MONOTONIC
538	{	682	{
539	struct timespec ts;	683	struct timespec ts;
540	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	684	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
541	have_monotonic = 1;	685	have_monotonic = 1;
542	}	686	}
543	#endif	687	#endif
544		688
545	ev_now = ev_time ();	689	rt_now = ev_time ();
546	now = get_clock ();	690	mn_now = get_clock ();
547	now_floor = now;	691	now_floor = mn_now;
548	diff = ev_now - now;	692	rtmn_diff = rt_now - mn_now;
549
550	if (pipe (sigpipe))
551	return 0;
552		693
553	if (methods == EVMETHOD_AUTO)	694	if (methods == EVMETHOD_AUTO)
554	if (!enable_secure () && getenv ("LIBEV_METHODS"))	695	if (!enable_secure () && getenv ("LIBEV_METHODS"))
555	methods = atoi (getenv ("LIBEV_METHODS"));	696	methods = atoi (getenv ("LIBEV_METHODS"));
556	else	697	else
557	methods = EVMETHOD_ANY;	698	methods = EVMETHOD_ANY;
558		699
559	ev_method = 0;	700	method = 0;
		701	#if EV_USE_WIN32
		702	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		703	#endif
560	#if EV_USE_KQUEUE	704	#if EV_USE_KQUEUE
561	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	705	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
562	#endif	706	#endif
563	#if EV_USE_EPOLL	707	#if EV_USE_EPOLL
564	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	708	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
565	#endif	709	#endif
566	#if EV_USE_POLL	710	#if EV_USE_POLL
567	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	711	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
568	#endif	712	#endif
569	#if EV_USE_SELECT	713	#if EV_USE_SELECT
570	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	714	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
571	#endif	715	#endif
572		716
		717	ev_watcher_init (&sigev, sigcb);
		718	ev_set_priority (&sigev, EV_MAXPRI);
		719	}
		720	}
		721
		722	void
		723	loop_destroy (EV_P)
		724	{
		725	int i;
		726
		727	#if EV_USE_WIN32
		728	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		729	#endif
		730	#if EV_USE_KQUEUE
		731	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		732	#endif
		733	#if EV_USE_EPOLL
		734	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		735	#endif
		736	#if EV_USE_POLL
		737	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		738	#endif
		739	#if EV_USE_SELECT
		740	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		741	#endif
		742
		743	for (i = NUMPRI; i--; )
		744	array_free (pending, [i]);
		745
		746	/* have to use the microsoft-never-gets-it-right macro */
		747	array_free_microshit (fdchange);
		748	array_free_microshit (timer);
		749	array_free_microshit (periodic);
		750	array_free_microshit (idle);
		751	array_free_microshit (prepare);
		752	array_free_microshit (check);
		753
		754	method = 0;
		755	}
		756
		757	static void
		758	loop_fork (EV_P)
		759	{
		760	#if EV_USE_EPOLL
		761	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		762	#endif
		763	#if EV_USE_KQUEUE
		764	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		765	#endif
		766
		767	if (ev_is_active (&sigev))
		768	{
		769	/* default loop */
		770
		771	ev_ref (EV_A);
		772	ev_io_stop (EV_A_ &sigev);
		773	close (sigpipe [0]);
		774	close (sigpipe [1]);
		775
		776	while (pipe (sigpipe))
		777	syserr ("(libev) error creating pipe");
		778
		779	siginit (EV_A);
		780	}
		781
		782	postfork = 0;
		783	}
		784
		785	#if EV_MULTIPLICITY
		786	struct ev_loop *
		787	ev_loop_new (int methods)
		788	{
		789	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		790
		791	memset (loop, 0, sizeof (struct ev_loop));
		792
		793	loop_init (EV_A_ methods);
		794
		795	if (ev_method (EV_A))
		796	return loop;
		797
		798	return 0;
		799	}
		800
		801	void
		802	ev_loop_destroy (EV_P)
		803	{
		804	loop_destroy (EV_A);
		805	ev_free (loop);
		806	}
		807
		808	void
		809	ev_loop_fork (EV_P)
		810	{
		811	postfork = 1;
		812	}
		813
		814	#endif
		815
		816	#if EV_MULTIPLICITY
		817	struct ev_loop default_loop_struct;
		818	static struct ev_loop *default_loop;
		819
		820	struct ev_loop *
		821	#else
		822	static int default_loop;
		823
		824	int
		825	#endif
		826	ev_default_loop (int methods)
		827	{
		828	if (sigpipe [0] == sigpipe [1])
		829	if (pipe (sigpipe))
		830	return 0;
		831
		832	if (!default_loop)
		833	{
		834	#if EV_MULTIPLICITY
		835	struct ev_loop *loop = default_loop = &default_loop_struct;
		836	#else
		837	default_loop = 1;
		838	#endif
		839
		840	loop_init (EV_A_ methods);
		841
573	if (ev_method)	842	if (ev_method (EV_A))
574	{	843	{
575	ev_watcher_init (&sigev, sigcb);
576	siginit ();	844	siginit (EV_A);
577		845
578	#ifndef WIN32	846	#ifndef WIN32
579	ev_signal_init (&childev, childcb, SIGCHLD);	847	ev_signal_init (&childev, childcb, SIGCHLD);
		848	ev_set_priority (&childev, EV_MAXPRI);
580	ev_signal_start (&childev);	849	ev_signal_start (EV_A_ &childev);
		850	ev_unref (EV_A); /* child watcher should not keep loop alive */
581	#endif	851	#endif
582	}	852	}
		853	else
		854	default_loop = 0;
583	}	855	}
584		856
585	return ev_method;	857	return default_loop;
		858	}
		859
		860	void
		861	ev_default_destroy (void)
		862	{
		863	#if EV_MULTIPLICITY
		864	struct ev_loop *loop = default_loop;
		865	#endif
		866
		867	#ifndef WIN32
		868	ev_ref (EV_A); /* child watcher */
		869	ev_signal_stop (EV_A_ &childev);
		870	#endif
		871
		872	ev_ref (EV_A); /* signal watcher */
		873	ev_io_stop (EV_A_ &sigev);
		874
		875	close (sigpipe [0]); sigpipe [0] = 0;
		876	close (sigpipe [1]); sigpipe [1] = 0;
		877
		878	loop_destroy (EV_A);
		879	}
		880
		881	void
		882	ev_default_fork (void)
		883	{
		884	#if EV_MULTIPLICITY
		885	struct ev_loop *loop = default_loop;
		886	#endif
		887
		888	if (method)
		889	postfork = 1;
586	}	890	}
587		891
588	/*****************************************************************************/	892	/*****************************************************************************/
589		893
590	void
591	ev_fork_prepare (void)
592	{
593	/* nop */
594	}
595
596	void
597	ev_fork_parent (void)
598	{
599	/* nop */
600	}
601
602	void
603	ev_fork_child (void)
604	{
605	#if EV_USE_EPOLL
606	if (ev_method == EVMETHOD_EPOLL)
607	epoll_postfork_child ();
608	#endif
609
610	ev_io_stop (&sigev);
611	close (sigpipe [0]);
612	close (sigpipe [1]);
613	pipe (sigpipe);
614	siginit ();
615	}
616
617	/*****************************************************************************/
618
619	static void	894	static void
620	call_pending (void)	895	call_pending (EV_P)
621	{	896	{
622	int pri;	897	int pri;
623		898
624	for (pri = NUMPRI; pri--; )	899	for (pri = NUMPRI; pri--; )
625	while (pendingcnt [pri])	900	while (pendingcnt [pri])
…		…
627	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	902	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
628		903
629	if (p->w)	904	if (p->w)
630	{	905	{
631	p->w->pending = 0;	906	p->w->pending = 0;
632	p->w->cb (p->w, p->events);	907	p->w->cb (EV_A_ p->w, p->events);
633	}	908	}
634	}	909	}
635	}	910	}
636		911
637	static void	912	static void
638	timers_reify (void)	913	timers_reify (EV_P)
639	{	914	{
640	while (timercnt && timers [0]->at <= now)	915	while (timercnt && ((WT)timers [0])->at <= mn_now)
641	{	916	{
642	struct ev_timer *w = timers [0];	917	struct ev_timer *w = timers [0];
		918
		919	assert (("inactive timer on timer heap detected", ev_is_active (w)));
643		920
644	/* first reschedule or stop timer */	921	/* first reschedule or stop timer */
645	if (w->repeat)	922	if (w->repeat)
646	{	923	{
647	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	924	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
648	w->at = now + w->repeat;	925	((WT)w)->at = mn_now + w->repeat;
649	downheap ((WT *)timers, timercnt, 0);	926	downheap ((WT *)timers, timercnt, 0);
650	}	927	}
651	else	928	else
652	ev_timer_stop (w); /* nonrepeating: stop timer */	929	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
653		930
654	event ((W)w, EV_TIMEOUT);	931	event (EV_A_ (W)w, EV_TIMEOUT);
655	}	932	}
656	}	933	}
657		934
658	static void	935	static void
659	periodics_reify (void)	936	periodics_reify (EV_P)
660	{	937	{
661	while (periodiccnt && periodics [0]->at <= ev_now)	938	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
662	{	939	{
663	struct ev_periodic *w = periodics [0];	940	struct ev_periodic *w = periodics [0];
		941
		942	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
664		943
665	/* first reschedule or stop timer */	944	/* first reschedule or stop timer */
666	if (w->interval)	945	if (w->interval)
667	{	946	{
668	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	947	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
669	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	948	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
670	downheap ((WT *)periodics, periodiccnt, 0);	949	downheap ((WT *)periodics, periodiccnt, 0);
671	}	950	}
672	else	951	else
673	ev_periodic_stop (w); /* nonrepeating: stop timer */	952	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
674		953
675	event ((W)w, EV_PERIODIC);	954	event (EV_A_ (W)w, EV_PERIODIC);
676	}	955	}
677	}	956	}
678		957
679	static void	958	static void
680	periodics_reschedule (ev_tstamp diff)	959	periodics_reschedule (EV_P)
681	{	960	{
682	int i;	961	int i;
683		962
684	/* adjust periodics after time jump */	963	/* adjust periodics after time jump */
685	for (i = 0; i < periodiccnt; ++i)	964	for (i = 0; i < periodiccnt; ++i)
686	{	965	{
687	struct ev_periodic *w = periodics [i];	966	struct ev_periodic *w = periodics [i];
688		967
689	if (w->interval)	968	if (w->interval)
690	{	969	{
691	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	970	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
692		971
693	if (fabs (diff) >= 1e-4)	972	if (fabs (diff) >= 1e-4)
694	{	973	{
695	ev_periodic_stop (w);	974	ev_periodic_stop (EV_A_ w);
696	ev_periodic_start (w);	975	ev_periodic_start (EV_A_ w);
697		976
698	i = 0; /* restart loop, inefficient, but time jumps should be rare */	977	i = 0; /* restart loop, inefficient, but time jumps should be rare */
699	}	978	}
700	}	979	}
701	}	980	}
702	}	981	}
703		982
704	static int	983	inline int
705	time_update_monotonic (void)	984	time_update_monotonic (EV_P)
706	{	985	{
707	now = get_clock ();	986	mn_now = get_clock ();
708		987
709	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	988	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
710	{	989	{
711	ev_now = now + diff;	990	rt_now = rtmn_diff + mn_now;
712	return 0;	991	return 0;
713	}	992	}
714	else	993	else
715	{	994	{
716	now_floor = now;	995	now_floor = mn_now;
717	ev_now = ev_time ();	996	rt_now = ev_time ();
718	return 1;	997	return 1;
719	}	998	}
720	}	999	}
721		1000
722	static void	1001	static void
723	time_update (void)	1002	time_update (EV_P)
724	{	1003	{
725	int i;	1004	int i;
726		1005
727	#if EV_USE_MONOTONIC	1006	#if EV_USE_MONOTONIC
728	if (expect_true (have_monotonic))	1007	if (expect_true (have_monotonic))
729	{	1008	{
730	if (time_update_monotonic ())	1009	if (time_update_monotonic (EV_A))
731	{	1010	{
732	ev_tstamp odiff = diff;	1011	ev_tstamp odiff = rtmn_diff;
733		1012
734	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1013	for (i = 4; --i; ) /* loop a few times, before making important decisions */
735	{	1014	{
736	diff = ev_now - now;	1015	rtmn_diff = rt_now - mn_now;
737		1016
738	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1017	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
739	return; /* all is well */	1018	return; /* all is well */
740		1019
741	ev_now = ev_time ();	1020	rt_now = ev_time ();
742	now = get_clock ();	1021	mn_now = get_clock ();
743	now_floor = now;	1022	now_floor = mn_now;
744	}	1023	}
745		1024
746	periodics_reschedule (diff - odiff);	1025	periodics_reschedule (EV_A);
747	/* no timer adjustment, as the monotonic clock doesn't jump */	1026	/* no timer adjustment, as the monotonic clock doesn't jump */
		1027	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
748	}	1028	}
749	}	1029	}
750	else	1030	else
751	#endif	1031	#endif
752	{	1032	{
753	ev_now = ev_time ();	1033	rt_now = ev_time ();
754		1034
755	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1035	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
756	{	1036	{
757	periodics_reschedule (ev_now - now);	1037	periodics_reschedule (EV_A);
758		1038
759	/* adjust timers. this is easy, as the offset is the same for all */	1039	/* adjust timers. this is easy, as the offset is the same for all */
760	for (i = 0; i < timercnt; ++i)	1040	for (i = 0; i < timercnt; ++i)
761	timers [i]->at += diff;	1041	((WT)timers [i])->at += rt_now - mn_now;
762	}	1042	}
763		1043
764	now = ev_now;	1044	mn_now = rt_now;
765	}	1045	}
766	}	1046	}
767		1047
768	int ev_loop_done;	1048	void
		1049	ev_ref (EV_P)
		1050	{
		1051	++activecnt;
		1052	}
769		1053
		1054	void
		1055	ev_unref (EV_P)
		1056	{
		1057	--activecnt;
		1058	}
		1059
		1060	static int loop_done;
		1061
		1062	void
770	void ev_loop (int flags)	1063	ev_loop (EV_P_ int flags)
771	{	1064	{
772	double block;	1065	double block;
773	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1066	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
774		1067
775	do	1068	do
776	{	1069	{
777	/* queue check watchers (and execute them) */	1070	/* queue check watchers (and execute them) */
778	if (expect_false (preparecnt))	1071	if (expect_false (preparecnt))
779	{	1072	{
780	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1073	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
781	call_pending ();	1074	call_pending (EV_A);
782	}	1075	}
783		1076
		1077	/* we might have forked, so reify kernel state if necessary */
		1078	if (expect_false (postfork))
		1079	loop_fork (EV_A);
		1080
784	/* update fd-related kernel structures */	1081	/* update fd-related kernel structures */
785	fd_reify ();	1082	fd_reify (EV_A);
786		1083
787	/* calculate blocking time */	1084	/* calculate blocking time */
788		1085
789	/* we only need this for !monotonic clockor timers, but as we basically	1086	/* we only need this for !monotonic clockor timers, but as we basically
790	always have timers, we just calculate it always */	1087	always have timers, we just calculate it always */
791	#if EV_USE_MONOTONIC	1088	#if EV_USE_MONOTONIC
792	if (expect_true (have_monotonic))	1089	if (expect_true (have_monotonic))
793	time_update_monotonic ();	1090	time_update_monotonic (EV_A);
794	else	1091	else
795	#endif	1092	#endif
796	{	1093	{
797	ev_now = ev_time ();	1094	rt_now = ev_time ();
798	now = ev_now;	1095	mn_now = rt_now;
799	}	1096	}
800		1097
801	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1098	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
802	block = 0.;	1099	block = 0.;
803	else	1100	else
804	{	1101	{
805	block = MAX_BLOCKTIME;	1102	block = MAX_BLOCKTIME;
806		1103
807	if (timercnt)	1104	if (timercnt)
808	{	1105	{
809	ev_tstamp to = timers [0]->at - now + method_fudge;	1106	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
810	if (block > to) block = to;	1107	if (block > to) block = to;
811	}	1108	}
812		1109
813	if (periodiccnt)	1110	if (periodiccnt)
814	{	1111	{
815	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1112	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
816	if (block > to) block = to;	1113	if (block > to) block = to;
817	}	1114	}
818		1115
819	if (block < 0.) block = 0.;	1116	if (block < 0.) block = 0.;
820	}	1117	}
821		1118
822	method_poll (block);	1119	method_poll (EV_A_ block);
823		1120
824	/* update ev_now, do magic */	1121	/* update rt_now, do magic */
825	time_update ();	1122	time_update (EV_A);
826		1123
827	/* queue pending timers and reschedule them */	1124	/* queue pending timers and reschedule them */
828	timers_reify (); /* relative timers called last */	1125	timers_reify (EV_A); /* relative timers called last */
829	periodics_reify (); /* absolute timers called first */	1126	periodics_reify (EV_A); /* absolute timers called first */
830		1127
831	/* queue idle watchers unless io or timers are pending */	1128	/* queue idle watchers unless io or timers are pending */
832	if (!pendingcnt)	1129	if (!pendingcnt)
833	queue_events ((W *)idles, idlecnt, EV_IDLE);	1130	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
834		1131
835	/* queue check watchers, to be executed first */	1132	/* queue check watchers, to be executed first */
836	if (checkcnt)	1133	if (checkcnt)
837	queue_events ((W *)checks, checkcnt, EV_CHECK);	1134	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
838		1135
839	call_pending ();	1136	call_pending (EV_A);
840	}	1137	}
841	while (!ev_loop_done);	1138	while (activecnt && !loop_done);
842		1139
843	if (ev_loop_done != 2)	1140	if (loop_done != 2)
844	ev_loop_done = 0;	1141	loop_done = 0;
		1142	}
		1143
		1144	void
		1145	ev_unloop (EV_P_ int how)
		1146	{
		1147	loop_done = how;
845	}	1148	}
846		1149
847	/*****************************************************************************/	1150	/*****************************************************************************/
848		1151
849	static void	1152	inline void
850	wlist_add (WL *head, WL elem)	1153	wlist_add (WL *head, WL elem)
851	{	1154	{
852	elem->next = *head;	1155	elem->next = *head;
853	*head = elem;	1156	*head = elem;
854	}	1157	}
855		1158
856	static void	1159	inline void
857	wlist_del (WL *head, WL elem)	1160	wlist_del (WL *head, WL elem)
858	{	1161	{
859	while (*head)	1162	while (*head)
860	{	1163	{
861	if (*head == elem)	1164	if (*head == elem)
…		…
866		1169
867	head = &(*head)->next;	1170	head = &(*head)->next;
868	}	1171	}
869	}	1172	}
870		1173
871	static void	1174	inline void
872	ev_clear_pending (W w)	1175	ev_clear_pending (EV_P_ W w)
873	{	1176	{
874	if (w->pending)	1177	if (w->pending)
875	{	1178	{
876	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1179	pendings [ABSPRI (w)][w->pending - 1].w = 0;
877	w->pending = 0;	1180	w->pending = 0;
878	}	1181	}
879	}	1182	}
880		1183
881	static void	1184	inline void
882	ev_start (W w, int active)	1185	ev_start (EV_P_ W w, int active)
883	{	1186	{
884	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1187	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
885	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1188	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
886		1189
887	w->active = active;	1190	w->active = active;
		1191	ev_ref (EV_A);
888	}	1192	}
889		1193
890	static void	1194	inline void
891	ev_stop (W w)	1195	ev_stop (EV_P_ W w)
892	{	1196	{
		1197	ev_unref (EV_A);
893	w->active = 0;	1198	w->active = 0;
894	}	1199	}
895		1200
896	/*****************************************************************************/	1201	/*****************************************************************************/
897		1202
898	void	1203	void
899	ev_io_start (struct ev_io *w)	1204	ev_io_start (EV_P_ struct ev_io *w)
900	{	1205	{
901	int fd = w->fd;	1206	int fd = w->fd;
902		1207
903	if (ev_is_active (w))	1208	if (ev_is_active (w))
904	return;	1209	return;
905		1210
906	assert (("ev_io_start called with negative fd", fd >= 0));	1211	assert (("ev_io_start called with negative fd", fd >= 0));
907		1212
908	ev_start ((W)w, 1);	1213	ev_start (EV_A_ (W)w, 1);
909	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1214	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
910	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1215	wlist_add ((WL *)&anfds[fd].head, (WL)w);
911		1216
912	fd_change (fd);	1217	fd_change (EV_A_ fd);
913	}	1218	}
914		1219
915	void	1220	void
916	ev_io_stop (struct ev_io *w)	1221	ev_io_stop (EV_P_ struct ev_io *w)
917	{	1222	{
918	ev_clear_pending ((W)w);	1223	ev_clear_pending (EV_A_ (W)w);
919	if (!ev_is_active (w))	1224	if (!ev_is_active (w))
920	return;	1225	return;
921		1226
922	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1227	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
923	ev_stop ((W)w);	1228	ev_stop (EV_A_ (W)w);
924		1229
925	fd_change (w->fd);	1230	fd_change (EV_A_ w->fd);
926	}	1231	}
927		1232
928	void	1233	void
929	ev_timer_start (struct ev_timer *w)	1234	ev_timer_start (EV_P_ struct ev_timer *w)
930	{	1235	{
931	if (ev_is_active (w))	1236	if (ev_is_active (w))
932	return;	1237	return;
933		1238
934	w->at += now;	1239	((WT)w)->at += mn_now;
935		1240
936	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1241	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
937		1242
938	ev_start ((W)w, ++timercnt);	1243	ev_start (EV_A_ (W)w, ++timercnt);
939	array_needsize (timers, timermax, timercnt, );	1244	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
940	timers [timercnt - 1] = w;	1245	timers [timercnt - 1] = w;
941	upheap ((WT *)timers, timercnt - 1);	1246	upheap ((WT *)timers, timercnt - 1);
942	}
943		1247
		1248	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1249	}
		1250
944	void	1251	void
945	ev_timer_stop (struct ev_timer *w)	1252	ev_timer_stop (EV_P_ struct ev_timer *w)
946	{	1253	{
947	ev_clear_pending ((W)w);	1254	ev_clear_pending (EV_A_ (W)w);
948	if (!ev_is_active (w))	1255	if (!ev_is_active (w))
949	return;	1256	return;
950		1257
		1258	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1259
951	if (w->active < timercnt--)	1260	if (((W)w)->active < timercnt--)
952	{	1261	{
953	timers [w->active - 1] = timers [timercnt];	1262	timers [((W)w)->active - 1] = timers [timercnt];
954	downheap ((WT *)timers, timercnt, w->active - 1);	1263	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
955	}	1264	}
956		1265
957	w->at = w->repeat;	1266	((WT)w)->at = w->repeat;
958		1267
959	ev_stop ((W)w);	1268	ev_stop (EV_A_ (W)w);
960	}	1269	}
961		1270
962	void	1271	void
963	ev_timer_again (struct ev_timer *w)	1272	ev_timer_again (EV_P_ struct ev_timer *w)
964	{	1273	{
965	if (ev_is_active (w))	1274	if (ev_is_active (w))
966	{	1275	{
967	if (w->repeat)	1276	if (w->repeat)
968	{	1277	{
969	w->at = now + w->repeat;	1278	((WT)w)->at = mn_now + w->repeat;
970	downheap ((WT *)timers, timercnt, w->active - 1);	1279	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
971	}	1280	}
972	else	1281	else
973	ev_timer_stop (w);	1282	ev_timer_stop (EV_A_ w);
974	}	1283	}
975	else if (w->repeat)	1284	else if (w->repeat)
976	ev_timer_start (w);	1285	ev_timer_start (EV_A_ w);
977	}	1286	}
978		1287
979	void	1288	void
980	ev_periodic_start (struct ev_periodic *w)	1289	ev_periodic_start (EV_P_ struct ev_periodic *w)
981	{	1290	{
982	if (ev_is_active (w))	1291	if (ev_is_active (w))
983	return;	1292	return;
984		1293
985	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1294	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
986		1295
987	/* this formula differs from the one in periodic_reify because we do not always round up */	1296	/* this formula differs from the one in periodic_reify because we do not always round up */
988	if (w->interval)	1297	if (w->interval)
989	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1298	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
990		1299
991	ev_start ((W)w, ++periodiccnt);	1300	ev_start (EV_A_ (W)w, ++periodiccnt);
992	array_needsize (periodics, periodicmax, periodiccnt, );	1301	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
993	periodics [periodiccnt - 1] = w;	1302	periodics [periodiccnt - 1] = w;
994	upheap ((WT *)periodics, periodiccnt - 1);	1303	upheap ((WT *)periodics, periodiccnt - 1);
995	}
996		1304
		1305	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1306	}
		1307
997	void	1308	void
998	ev_periodic_stop (struct ev_periodic *w)	1309	ev_periodic_stop (EV_P_ struct ev_periodic *w)
999	{	1310	{
1000	ev_clear_pending ((W)w);	1311	ev_clear_pending (EV_A_ (W)w);
1001	if (!ev_is_active (w))	1312	if (!ev_is_active (w))
1002	return;	1313	return;
1003		1314
		1315	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1316
1004	if (w->active < periodiccnt--)	1317	if (((W)w)->active < periodiccnt--)
1005	{	1318	{
1006	periodics [w->active - 1] = periodics [periodiccnt];	1319	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1007	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1320	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1008	}	1321	}
1009		1322
1010	ev_stop ((W)w);	1323	ev_stop (EV_A_ (W)w);
1011	}	1324	}
1012		1325
1013	void	1326	void
1014	ev_signal_start (struct ev_signal *w)	1327	ev_idle_start (EV_P_ struct ev_idle *w)
1015	{	1328	{
1016	if (ev_is_active (w))	1329	if (ev_is_active (w))
1017	return;	1330	return;
1018		1331
		1332	ev_start (EV_A_ (W)w, ++idlecnt);
		1333	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1334	idles [idlecnt - 1] = w;
		1335	}
		1336
		1337	void
		1338	ev_idle_stop (EV_P_ struct ev_idle *w)
		1339	{
		1340	ev_clear_pending (EV_A_ (W)w);
		1341	if (ev_is_active (w))
		1342	return;
		1343
		1344	idles [((W)w)->active - 1] = idles [--idlecnt];
		1345	ev_stop (EV_A_ (W)w);
		1346	}
		1347
		1348	void
		1349	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1350	{
		1351	if (ev_is_active (w))
		1352	return;
		1353
		1354	ev_start (EV_A_ (W)w, ++preparecnt);
		1355	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1356	prepares [preparecnt - 1] = w;
		1357	}
		1358
		1359	void
		1360	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1361	{
		1362	ev_clear_pending (EV_A_ (W)w);
		1363	if (ev_is_active (w))
		1364	return;
		1365
		1366	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1367	ev_stop (EV_A_ (W)w);
		1368	}
		1369
		1370	void
		1371	ev_check_start (EV_P_ struct ev_check *w)
		1372	{
		1373	if (ev_is_active (w))
		1374	return;
		1375
		1376	ev_start (EV_A_ (W)w, ++checkcnt);
		1377	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1378	checks [checkcnt - 1] = w;
		1379	}
		1380
		1381	void
		1382	ev_check_stop (EV_P_ struct ev_check *w)
		1383	{
		1384	ev_clear_pending (EV_A_ (W)w);
		1385	if (ev_is_active (w))
		1386	return;
		1387
		1388	checks [((W)w)->active - 1] = checks [--checkcnt];
		1389	ev_stop (EV_A_ (W)w);
		1390	}
		1391
		1392	#ifndef SA_RESTART
		1393	# define SA_RESTART 0
		1394	#endif
		1395
		1396	void
		1397	ev_signal_start (EV_P_ struct ev_signal *w)
		1398	{
		1399	#if EV_MULTIPLICITY
		1400	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1401	#endif
		1402	if (ev_is_active (w))
		1403	return;
		1404
1019	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1405	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1020		1406
1021	ev_start ((W)w, 1);	1407	ev_start (EV_A_ (W)w, 1);
1022	array_needsize (signals, signalmax, w->signum, signals_init);	1408	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1023	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1409	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1024		1410
1025	if (!w->next)	1411	if (!((WL)w)->next)
1026	{	1412	{
		1413	#if WIN32
		1414	signal (w->signum, sighandler);
		1415	#else
1027	struct sigaction sa;	1416	struct sigaction sa;
1028	sa.sa_handler = sighandler;	1417	sa.sa_handler = sighandler;
1029	sigfillset (&sa.sa_mask);	1418	sigfillset (&sa.sa_mask);
1030	sa.sa_flags = 0;	1419	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1031	sigaction (w->signum, &sa, 0);	1420	sigaction (w->signum, &sa, 0);
		1421	#endif
1032	}	1422	}
1033	}	1423	}
1034		1424
1035	void	1425	void
1036	ev_signal_stop (struct ev_signal *w)	1426	ev_signal_stop (EV_P_ struct ev_signal *w)
1037	{	1427	{
1038	ev_clear_pending ((W)w);	1428	ev_clear_pending (EV_A_ (W)w);
1039	if (!ev_is_active (w))	1429	if (!ev_is_active (w))
1040	return;	1430	return;
1041		1431
1042	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1432	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1043	ev_stop ((W)w);	1433	ev_stop (EV_A_ (W)w);
1044		1434
1045	if (!signals [w->signum - 1].head)	1435	if (!signals [w->signum - 1].head)
1046	signal (w->signum, SIG_DFL);	1436	signal (w->signum, SIG_DFL);
1047	}	1437	}
1048		1438
1049	void	1439	void
1050	ev_idle_start (struct ev_idle *w)	1440	ev_child_start (EV_P_ struct ev_child *w)
1051	{	1441	{
		1442	#if EV_MULTIPLICITY
		1443	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1444	#endif
1052	if (ev_is_active (w))	1445	if (ev_is_active (w))
1053	return;	1446	return;
1054		1447
1055	ev_start ((W)w, ++idlecnt);	1448	ev_start (EV_A_ (W)w, 1);
1056	array_needsize (idles, idlemax, idlecnt, );	1449	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1057	idles [idlecnt - 1] = w;
1058	}	1450	}
1059		1451
1060	void	1452	void
1061	ev_idle_stop (struct ev_idle *w)	1453	ev_child_stop (EV_P_ struct ev_child *w)
1062	{	1454	{
1063	ev_clear_pending ((W)w);	1455	ev_clear_pending (EV_A_ (W)w);
1064	if (ev_is_active (w))	1456	if (ev_is_active (w))
1065	return;	1457	return;
1066		1458
1067	idles [w->active - 1] = idles [--idlecnt];
1068	ev_stop ((W)w);
1069	}
1070
1071	void
1072	ev_prepare_start (struct ev_prepare *w)
1073	{
1074	if (ev_is_active (w))
1075	return;
1076
1077	ev_start ((W)w, ++preparecnt);
1078	array_needsize (prepares, preparemax, preparecnt, );
1079	prepares [preparecnt - 1] = w;
1080	}
1081
1082	void
1083	ev_prepare_stop (struct ev_prepare *w)
1084	{
1085	ev_clear_pending ((W)w);
1086	if (ev_is_active (w))
1087	return;
1088
1089	prepares [w->active - 1] = prepares [--preparecnt];
1090	ev_stop ((W)w);
1091	}
1092
1093	void
1094	ev_check_start (struct ev_check *w)
1095	{
1096	if (ev_is_active (w))
1097	return;
1098
1099	ev_start ((W)w, ++checkcnt);
1100	array_needsize (checks, checkmax, checkcnt, );
1101	checks [checkcnt - 1] = w;
1102	}
1103
1104	void
1105	ev_check_stop (struct ev_check *w)
1106	{
1107	ev_clear_pending ((W)w);
1108	if (ev_is_active (w))
1109	return;
1110
1111	checks [w->active - 1] = checks [--checkcnt];
1112	ev_stop ((W)w);
1113	}
1114
1115	void
1116	ev_child_start (struct ev_child *w)
1117	{
1118	if (ev_is_active (w))
1119	return;
1120
1121	ev_start ((W)w, 1);
1122	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1123	}
1124
1125	void
1126	ev_child_stop (struct ev_child *w)
1127	{
1128	ev_clear_pending ((W)w);
1129	if (ev_is_active (w))
1130	return;
1131
1132	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1459	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1133	ev_stop ((W)w);	1460	ev_stop (EV_A_ (W)w);
1134	}	1461	}
1135		1462
1136	/*****************************************************************************/	1463	/*****************************************************************************/
1137		1464
1138	struct ev_once	1465	struct ev_once
…		…
1142	void (cb)(int revents, void arg);	1469	void (cb)(int revents, void arg);
1143	void *arg;	1470	void *arg;
1144	};	1471	};
1145		1472
1146	static void	1473	static void
1147	once_cb (struct ev_once *once, int revents)	1474	once_cb (EV_P_ struct ev_once *once, int revents)
1148	{	1475	{
1149	void (cb)(int revents, void arg) = once->cb;	1476	void (cb)(int revents, void arg) = once->cb;
1150	void *arg = once->arg;	1477	void *arg = once->arg;
1151		1478
1152	ev_io_stop (&once->io);	1479	ev_io_stop (EV_A_ &once->io);
1153	ev_timer_stop (&once->to);	1480	ev_timer_stop (EV_A_ &once->to);
1154	free (once);	1481	ev_free (once);
1155		1482
1156	cb (revents, arg);	1483	cb (revents, arg);
1157	}	1484	}
1158		1485
1159	static void	1486	static void
1160	once_cb_io (struct ev_io *w, int revents)	1487	once_cb_io (EV_P_ struct ev_io *w, int revents)
1161	{	1488	{
1162	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1489	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1163	}	1490	}
1164		1491
1165	static void	1492	static void
1166	once_cb_to (struct ev_timer *w, int revents)	1493	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1167	{	1494	{
1168	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1495	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1169	}	1496	}
1170		1497
1171	void	1498	void
1172	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1499	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1173	{	1500	{
1174	struct ev_once *once = malloc (sizeof (struct ev_once));	1501	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1175		1502
1176	if (!once)	1503	if (!once)
1177	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1504	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1178	else	1505	else
1179	{	1506	{
…		…
1182		1509
1183	ev_watcher_init (&once->io, once_cb_io);	1510	ev_watcher_init (&once->io, once_cb_io);
1184	if (fd >= 0)	1511	if (fd >= 0)
1185	{	1512	{
1186	ev_io_set (&once->io, fd, events);	1513	ev_io_set (&once->io, fd, events);
1187	ev_io_start (&once->io);	1514	ev_io_start (EV_A_ &once->io);
1188	}	1515	}
1189		1516
1190	ev_watcher_init (&once->to, once_cb_to);	1517	ev_watcher_init (&once->to, once_cb_to);
1191	if (timeout >= 0.)	1518	if (timeout >= 0.)
1192	{	1519	{
1193	ev_timer_set (&once->to, timeout, 0.);	1520	ev_timer_set (&once->to, timeout, 0.);
1194	ev_timer_start (&once->to);	1521	ev_timer_start (EV_A_ &once->to);
1195	}	1522	}
1196	}	1523	}
1197	}	1524	}
1198		1525
1199	/*****************************************************************************/
1200
1201	#if 0
1202
1203	struct ev_io wio;
1204
1205	static void
1206	sin_cb (struct ev_io *w, int revents)
1207	{
1208	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1209	}
1210
1211	static void
1212	ocb (struct ev_timer *w, int revents)
1213	{
1214	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1215	ev_timer_stop (w);
1216	ev_timer_start (w);
1217	}
1218
1219	static void
1220	scb (struct ev_signal *w, int revents)
1221	{
1222	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1223	ev_io_stop (&wio);
1224	ev_io_start (&wio);
1225	}
1226
1227	static void
1228	gcb (struct ev_signal *w, int revents)
1229	{
1230	fprintf (stderr, "generic %x\n", revents);
1231
1232	}
1233
1234	int main (void)
1235	{
1236	ev_init (0);
1237
1238	ev_io_init (&wio, sin_cb, 0, EV_READ);
1239	ev_io_start (&wio);
1240
1241	struct ev_timer t[10000];
1242
1243	#if 0
1244	int i;
1245	for (i = 0; i < 10000; ++i)
1246	{
1247	struct ev_timer *w = t + i;
1248	ev_watcher_init (w, ocb, i);
1249	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1250	ev_timer_start (w);
1251	if (drand48 () < 0.5)
1252	ev_timer_stop (w);
1253	}
1254	#endif
1255
1256	struct ev_timer t1;
1257	ev_timer_init (&t1, ocb, 5, 10);
1258	ev_timer_start (&t1);
1259
1260	struct ev_signal sig;
1261	ev_signal_init (&sig, scb, SIGQUIT);
1262	ev_signal_start (&sig);
1263
1264	struct ev_check cw;
1265	ev_check_init (&cw, gcb);
1266	ev_check_start (&cw);
1267
1268	struct ev_idle iw;
1269	ev_idle_init (&iw, gcb);
1270	ev_idle_start (&iw);
1271
1272	ev_loop (0);
1273
1274	return 0;
1275	}
1276
1277	#endif
1278
1279
1280
1281

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Comparing libev/ev.c (file contents): Revision 1.46 by root, Sat Nov 3 09:20:12 2007 UTC vs. Revision 1.74 by root, Tue Nov 6 16:51:20 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.46 by root, Sat Nov 3 09:20:12 2007 UTC vs.
Revision 1.74 by root, Tue Nov 6 16:51:20 2007 UTC