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

Comparing libev/ev.c (file contents):
Revision 1.153 by root, Wed Nov 28 11:41:18 2007 UTC vs.
Revision 1.172 by root, Sun Dec 9 02:27:44 2007 UTC

…		…
222	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	222	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
223	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */	223	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
224		224
225	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
226	# define expect(expr,value) __builtin_expect ((expr),(value))	226	# define expect(expr,value) __builtin_expect ((expr),(value))
227	# define inline_size static inline /* inline for codesize */
228	# if EV_MINIMAL
229	# define noinline __attribute__ ((noinline))	227	# define noinline __attribute__ ((noinline))
230	# define inline_speed static noinline
231	# else
232	# define noinline
233	# define inline_speed static inline
234	# endif
235	#else	228	#else
236	# define expect(expr,value) (expr)	229	# define expect(expr,value) (expr)
237	# define inline_speed static
238	# define inline_size static
239	# define noinline	230	# define noinline
		231	# if __STDC_VERSION__ < 199901L
		232	# define inline
		233	# endif
240	#endif	234	#endif
241		235
242	#define expect_false(expr) expect ((expr) != 0, 0)	236	#define expect_false(expr) expect ((expr) != 0, 0)
243	#define expect_true(expr) expect ((expr) != 0, 1)	237	#define expect_true(expr) expect ((expr) != 0, 1)
		238	#define inline_size static inline
		239
		240	#if EV_MINIMAL
		241	# define inline_speed static noinline
		242	#else
		243	# define inline_speed static inline
		244	#endif
244		245
245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	246	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
246	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	247	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
247		248
248	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	249	#define EMPTY /* required for microsofts broken pseudo-c compiler */
249	#define EMPTY2(a,b) /* used to suppress some warnings */	250	#define EMPTY2(a,b) /* used to suppress some warnings */
250		251
251	typedef ev_watcher *W;	252	typedef ev_watcher *W;
252	typedef ev_watcher_list *WL;	253	typedef ev_watcher_list *WL;
253	typedef ev_watcher_time *WT;	254	typedef ev_watcher_time *WT;
…		…
281	perror (msg);	282	perror (msg);
282	abort ();	283	abort ();
283	}	284	}
284	}	285	}
285		286
286	static void (alloc)(void *ptr, size_t size) = realloc;	287	static void (alloc)(void *ptr, long size);
287		288
288	void	289	void
289	ev_set_allocator (void (cb)(void *ptr, size_t size))	290	ev_set_allocator (void (cb)(void *ptr, long size))
290	{	291	{
291	alloc = cb;	292	alloc = cb;
292	}	293	}
293		294
294	inline_speed void *	295	inline_speed void *
295	ev_realloc (void *ptr, size_t size)	296	ev_realloc (void *ptr, long size)
296	{	297	{
297	ptr = alloc (ptr, size);	298	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
298		299
299	if (!ptr && size)	300	if (!ptr && size)
300	{	301	{
301	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", (long)size);	302	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
302	abort ();	303	abort ();
303	}	304	}
304		305
305	return ptr;	306	return ptr;
306	}	307	}
…		…
324	{	325	{
325	W w;	326	W w;
326	int events;	327	int events;
327	} ANPENDING;	328	} ANPENDING;
328		329
		330	#if EV_USE_INOTIFY
329	typedef struct	331	typedef struct
330	{	332	{
331	#if EV_USE_INOTIFY
332	WL head;	333	WL head;
333	#endif
334	} ANFS;	334	} ANFS;
		335	#endif
335		336
336	#if EV_MULTIPLICITY	337	#if EV_MULTIPLICITY
337		338
338	struct ev_loop	339	struct ev_loop
339	{	340	{
…		…
396	{	397	{
397	return ev_rt_now;	398	return ev_rt_now;
398	}	399	}
399	#endif	400	#endif
400		401
401	#define array_roundsize(type,n) (((n) \| 4) & ~3)	402	int inline_size
		403	array_nextsize (int elem, int cur, int cnt)
		404	{
		405	int ncur = cur + 1;
		406
		407	do
		408	ncur <<= 1;
		409	while (cnt > ncur);
		410
		411	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		412	if (elem * ncur > 4096)
		413	{
		414	ncur *= elem;
		415	ncur = (ncur + elem + 4095 + sizeof (void ) 4) & ~4095;
		416	ncur = ncur - sizeof (void ) 4;
		417	ncur /= elem;
		418	}
		419
		420	return ncur;
		421	}
		422
		423	static noinline void *
		424	array_realloc (int elem, void base, int cur, int cnt)
		425	{
		426	cur = array_nextsize (elem, cur, cnt);
		427	return ev_realloc (base, elem * *cur);
		428	}
402		429
403	#define array_needsize(type,base,cur,cnt,init) \	430	#define array_needsize(type,base,cur,cnt,init) \
404	if (expect_false ((cnt) > cur)) \	431	if (expect_false ((cnt) > (cur))) \
405	{ \	432	{ \
406	int newcnt = cur; \	433	int ocur_ = (cur); \
407	do \	434	(base) = (type *)array_realloc \
408	{ \	435	(sizeof (type), (base), &(cur), (cnt)); \
409	newcnt = array_roundsize (type, newcnt << 1); \	436	init ((base) + (ocur_), (cur) - ocur_); \
410	} \
411	while ((cnt) > newcnt); \
412	\
413	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
414	init (base + cur, newcnt - cur); \
415	cur = newcnt; \
416	}	437	}
417		438
		439	#if 0
418	#define array_slim(type,stem) \	440	#define array_slim(type,stem) \
419	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	441	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
420	{ \	442	{ \
421	stem ## max = array_roundsize (stem ## cnt >> 1); \	443	stem ## max = array_roundsize (stem ## cnt >> 1); \
422	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\	444	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
423	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	445	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
424	}	446	}
		447	#endif
425		448
426	#define array_free(stem, idx) \	449	#define array_free(stem, idx) \
427	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	450	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
428		451
429	/*****************************************************************************/	452	/*****************************************************************************/
430		453
431	void noinline	454	void noinline
432	ev_feed_event (EV_P_ void *w, int revents)	455	ev_feed_event (EV_P_ void *w, int revents)
433	{	456	{
434	W w_ = (W)w;	457	W w_ = (W)w;
		458	int pri = ABSPRI (w_);
435		459
436	if (expect_false (w_->pending))	460	if (expect_false (w_->pending))
		461	pendings [pri][w_->pending - 1].events \|= revents;
		462	else
437	{	463	{
		464	w_->pending = ++pendingcnt [pri];
		465	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		466	pendings [pri][w_->pending - 1].w = w_;
438	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;	467	pendings [pri][w_->pending - 1].events = revents;
439	return;
440	}	468	}
441
442	w_->pending = ++pendingcnt [ABSPRI (w_)];
443	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
444	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
445	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
446	}	469	}
447		470
448	void inline_size	471	void inline_size
449	queue_events (EV_P_ W *events, int eventcnt, int type)	472	queue_events (EV_P_ W *events, int eventcnt, int type)
450	{	473	{
…		…
485	}	508	}
486		509
487	void	510	void
488	ev_feed_fd_event (EV_P_ int fd, int revents)	511	ev_feed_fd_event (EV_P_ int fd, int revents)
489	{	512	{
		513	if (fd >= 0 && fd < anfdmax)
490	fd_event (EV_A_ fd, revents);	514	fd_event (EV_A_ fd, revents);
491	}	515	}
492		516
493	void inline_size	517	void inline_size
494	fd_reify (EV_P)	518	fd_reify (EV_P)
495	{	519	{
…		…
589	static void noinline	613	static void noinline
590	fd_rearm_all (EV_P)	614	fd_rearm_all (EV_P)
591	{	615	{
592	int fd;	616	int fd;
593		617
594	/* this should be highly optimised to not do anything but set a flag */
595	for (fd = 0; fd < anfdmax; ++fd)	618	for (fd = 0; fd < anfdmax; ++fd)
596	if (anfds [fd].events)	619	if (anfds [fd].events)
597	{	620	{
598	anfds [fd].events = 0;	621	anfds [fd].events = 0;
599	fd_change (EV_A_ fd);	622	fd_change (EV_A_ fd);
…		…
726	for (signum = signalmax; signum--; )	749	for (signum = signalmax; signum--; )
727	if (signals [signum].gotsig)	750	if (signals [signum].gotsig)
728	ev_feed_signal_event (EV_A_ signum + 1);	751	ev_feed_signal_event (EV_A_ signum + 1);
729	}	752	}
730		753
731	void inline_size	754	void inline_speed
732	fd_intern (int fd)	755	fd_intern (int fd)
733	{	756	{
734	#ifdef _WIN32	757	#ifdef _WIN32
735	int arg = 1;	758	int arg = 1;
736	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	759	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
765	ev_child *w;	788	ev_child *w;
766		789
767	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	790	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
768	if (w->pid == pid \|\| !w->pid)	791	if (w->pid == pid \|\| !w->pid)
769	{	792	{
770	ev_priority (w) = ev_priority (sw); /* need to do it now */	793	ev_set_priority (w, ev_priority (sw)); /* need to do it now */
771	w->rpid = pid;	794	w->rpid = pid;
772	w->rstatus = status;	795	w->rstatus = status;
773	ev_feed_event (EV_A_ (W)w, EV_CHILD);	796	ev_feed_event (EV_A_ (W)w, EV_CHILD);
774	}	797	}
775	}	798	}
776		799
777	#ifndef WCONTINUED	800	#ifndef WCONTINUED
…		…
887	ev_backend (EV_P)	910	ev_backend (EV_P)
888	{	911	{
889	return backend;	912	return backend;
890	}	913	}
891		914
		915	unsigned int
		916	ev_loop_count (EV_P)
		917	{
		918	return loop_count;
		919	}
		920
892	static void noinline	921	static void noinline
893	loop_init (EV_P_ unsigned int flags)	922	loop_init (EV_P_ unsigned int flags)
894	{	923	{
895	if (!backend)	924	if (!backend)
896	{	925	{
…		…
905	ev_rt_now = ev_time ();	934	ev_rt_now = ev_time ();
906	mn_now = get_clock ();	935	mn_now = get_clock ();
907	now_floor = mn_now;	936	now_floor = mn_now;
908	rtmn_diff = ev_rt_now - mn_now;	937	rtmn_diff = ev_rt_now - mn_now;
909		938
		939	/* pid check not overridable via env */
		940	#ifndef _WIN32
		941	if (flags & EVFLAG_FORKCHECK)
		942	curpid = getpid ();
		943	#endif
		944
910	if (!(flags & EVFLAG_NOENV)	945	if (!(flags & EVFLAG_NOENV)
911	&& !enable_secure ()	946	&& !enable_secure ()
912	&& getenv ("LIBEV_FLAGS"))	947	&& getenv ("LIBEV_FLAGS"))
913	flags = atoi (getenv ("LIBEV_FLAGS"));	948	flags = atoi (getenv ("LIBEV_FLAGS"));
914		949
…		…
970	#if EV_USE_SELECT	1005	#if EV_USE_SELECT
971	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1006	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
972	#endif	1007	#endif
973		1008
974	for (i = NUMPRI; i--; )	1009	for (i = NUMPRI; i--; )
		1010	{
975	array_free (pending, [i]);	1011	array_free (pending, [i]);
		1012	#if EV_IDLE_ENABLE
		1013	array_free (idle, [i]);
		1014	#endif
		1015	}
976		1016
977	/* have to use the microsoft-never-gets-it-right macro */	1017	/* have to use the microsoft-never-gets-it-right macro */
978	array_free (fdchange, EMPTY0);	1018	array_free (fdchange, EMPTY);
979	array_free (timer, EMPTY0);	1019	array_free (timer, EMPTY);
980	#if EV_PERIODIC_ENABLE	1020	#if EV_PERIODIC_ENABLE
981	array_free (periodic, EMPTY0);	1021	array_free (periodic, EMPTY);
982	#endif	1022	#endif
983	array_free (idle, EMPTY0);
984	array_free (prepare, EMPTY0);	1023	array_free (prepare, EMPTY);
985	array_free (check, EMPTY0);	1024	array_free (check, EMPTY);
986		1025
987	backend = 0;	1026	backend = 0;
988	}	1027	}
		1028
		1029	void inline_size infy_fork (EV_P);
989		1030
990	void inline_size	1031	void inline_size
991	loop_fork (EV_P)	1032	loop_fork (EV_P)
992	{	1033	{
993	#if EV_USE_PORT	1034	#if EV_USE_PORT
…		…
996	#if EV_USE_KQUEUE	1037	#if EV_USE_KQUEUE
997	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1038	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
998	#endif	1039	#endif
999	#if EV_USE_EPOLL	1040	#if EV_USE_EPOLL
1000	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1041	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1042	#endif
		1043	#if EV_USE_INOTIFY
		1044	infy_fork (EV_A);
1001	#endif	1045	#endif
1002		1046
1003	if (ev_is_active (&sigev))	1047	if (ev_is_active (&sigev))
1004	{	1048	{
1005	/* default loop */	1049	/* default loop */
…		…
1121	postfork = 1;	1165	postfork = 1;
1122	}	1166	}
1123		1167
1124	/*****************************************************************************/	1168	/*****************************************************************************/
1125		1169
1126	int inline_size	1170	void
1127	any_pending (EV_P)	1171	ev_invoke (EV_P_ void *w, int revents)
1128	{	1172	{
1129	int pri;	1173	EV_CB_INVOKE ((W)w, revents);
1130
1131	for (pri = NUMPRI; pri--; )
1132	if (pendingcnt [pri])
1133	return 1;
1134
1135	return 0;
1136	}	1174	}
1137		1175
1138	void inline_speed	1176	void inline_speed
1139	call_pending (EV_P)	1177	call_pending (EV_P)
1140	{	1178	{
…		…
1232	for (i = periodiccnt >> 1; i--; )	1270	for (i = periodiccnt >> 1; i--; )
1233	downheap ((WT *)periodics, periodiccnt, i);	1271	downheap ((WT *)periodics, periodiccnt, i);
1234	}	1272	}
1235	#endif	1273	#endif
1236		1274
		1275	#if EV_IDLE_ENABLE
		1276	void inline_size
		1277	idle_reify (EV_P)
		1278	{
		1279	if (expect_false (idleall))
		1280	{
		1281	int pri;
		1282
		1283	for (pri = NUMPRI; pri--; )
		1284	{
		1285	if (pendingcnt [pri])
		1286	break;
		1287
		1288	if (idlecnt [pri])
		1289	{
		1290	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1291	break;
		1292	}
		1293	}
		1294	}
		1295	}
		1296	#endif
		1297
1237	int inline_size	1298	int inline_size
1238	time_update_monotonic (EV_P)	1299	time_update_monotonic (EV_P)
1239	{	1300	{
1240	mn_now = get_clock ();	1301	mn_now = get_clock ();
1241		1302
…		…
1265	ev_tstamp odiff = rtmn_diff;	1326	ev_tstamp odiff = rtmn_diff;
1266		1327
1267	/* loop a few times, before making important decisions.	1328	/* loop a few times, before making important decisions.
1268	* on the choice of "4": one iteration isn't enough,	1329	* on the choice of "4": one iteration isn't enough,
1269	* in case we get preempted during the calls to	1330	* in case we get preempted during the calls to
1270	* ev_time and get_clock. a second call is almost guarenteed	1331	* ev_time and get_clock. a second call is almost guaranteed
1271	* to succeed in that case, though. and looping a few more times	1332	* to succeed in that case, though. and looping a few more times
1272	* doesn't hurt either as we only do this on time-jumps or	1333	* doesn't hurt either as we only do this on time-jumps or
1273	* in the unlikely event of getting preempted here.	1334	* in the unlikely event of having been preempted here.
1274	*/	1335	*/
1275	for (i = 4; --i; )	1336	for (i = 4; --i; )
1276	{	1337	{
1277	rtmn_diff = ev_rt_now - mn_now;	1338	rtmn_diff = ev_rt_now - mn_now;
1278		1339
…		…
1300	{	1361	{
1301	#if EV_PERIODIC_ENABLE	1362	#if EV_PERIODIC_ENABLE
1302	periodics_reschedule (EV_A);	1363	periodics_reschedule (EV_A);
1303	#endif	1364	#endif
1304		1365
1305	/* adjust timers. this is easy, as the offset is the same for all */	1366	/* adjust timers. this is easy, as the offset is the same for all of them */
1306	for (i = 0; i < timercnt; ++i)	1367	for (i = 0; i < timercnt; ++i)
1307	((WT)timers [i])->at += ev_rt_now - mn_now;	1368	((WT)timers [i])->at += ev_rt_now - mn_now;
1308	}	1369	}
1309		1370
1310	mn_now = ev_rt_now;	1371	mn_now = ev_rt_now;
…		…
1330	{	1391	{
1331	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)	1392	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
1332	? EVUNLOOP_ONE	1393	? EVUNLOOP_ONE
1333	: EVUNLOOP_CANCEL;	1394	: EVUNLOOP_CANCEL;
1334		1395
1335	while (activecnt)	1396	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1397
		1398	do
1336	{	1399	{
1337	/* we might have forked, so reify kernel state if necessary */	1400	#ifndef _WIN32
		1401	if (expect_false (curpid)) /* penalise the forking check even more */
		1402	if (expect_false (getpid () != curpid))
		1403	{
		1404	curpid = getpid ();
		1405	postfork = 1;
		1406	}
		1407	#endif
		1408
1338	#if EV_FORK_ENABLE	1409	#if EV_FORK_ENABLE
		1410	/* we might have forked, so queue fork handlers */
1339	if (expect_false (postfork))	1411	if (expect_false (postfork))
1340	if (forkcnt)	1412	if (forkcnt)
1341	{	1413	{
1342	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	1414	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1343	call_pending (EV_A);	1415	call_pending (EV_A);
1344	}	1416	}
1345	#endif	1417	#endif
1346		1418
1347	/* queue check watchers (and execute them) */	1419	/* queue prepare watchers (and execute them) */
1348	if (expect_false (preparecnt))	1420	if (expect_false (preparecnt))
1349	{	1421	{
1350	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1422	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1351	call_pending (EV_A);	1423	call_pending (EV_A);
1352	}	1424	}
1353		1425
		1426	if (expect_false (!activecnt))
		1427	break;
		1428
1354	/* we might have forked, so reify kernel state if necessary */	1429	/* we might have forked, so reify kernel state if necessary */
1355	if (expect_false (postfork))	1430	if (expect_false (postfork))
1356	loop_fork (EV_A);	1431	loop_fork (EV_A);
1357		1432
1358	/* update fd-related kernel structures */	1433	/* update fd-related kernel structures */
1359	fd_reify (EV_A);	1434	fd_reify (EV_A);
1360		1435
1361	/* calculate blocking time */	1436	/* calculate blocking time */
1362	{	1437	{
1363	double block;	1438	ev_tstamp block;
1364		1439
1365	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1440	if (expect_false (flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt))
1366	block = 0.; /* do not block at all */	1441	block = 0.; /* do not block at all */
1367	else	1442	else
1368	{	1443	{
1369	/* update time to cancel out callback processing overhead */	1444	/* update time to cancel out callback processing overhead */
1370	#if EV_USE_MONOTONIC	1445	#if EV_USE_MONOTONIC
…		…
1394	#endif	1469	#endif
1395		1470
1396	if (expect_false (block < 0.)) block = 0.;	1471	if (expect_false (block < 0.)) block = 0.;
1397	}	1472	}
1398		1473
		1474	++loop_count;
1399	backend_poll (EV_A_ block);	1475	backend_poll (EV_A_ block);
1400	}	1476	}
1401		1477
1402	/* update ev_rt_now, do magic */	1478	/* update ev_rt_now, do magic */
1403	time_update (EV_A);	1479	time_update (EV_A);
…		…
1406	timers_reify (EV_A); /* relative timers called last */	1482	timers_reify (EV_A); /* relative timers called last */
1407	#if EV_PERIODIC_ENABLE	1483	#if EV_PERIODIC_ENABLE
1408	periodics_reify (EV_A); /* absolute timers called first */	1484	periodics_reify (EV_A); /* absolute timers called first */
1409	#endif	1485	#endif
1410		1486
		1487	#if EV_IDLE_ENABLE
1411	/* queue idle watchers unless other events are pending */	1488	/* queue idle watchers unless other events are pending */
1412	if (idlecnt && !any_pending (EV_A))	1489	idle_reify (EV_A);
1413	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1490	#endif
1414		1491
1415	/* queue check watchers, to be executed first */	1492	/* queue check watchers, to be executed first */
1416	if (expect_false (checkcnt))	1493	if (expect_false (checkcnt))
1417	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1494	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1418		1495
1419	call_pending (EV_A);	1496	call_pending (EV_A);
1420		1497
1421	if (expect_false (loop_done))
1422	break;
1423	}	1498	}
		1499	while (expect_true (activecnt && !loop_done));
1424		1500
1425	if (loop_done == EVUNLOOP_ONE)	1501	if (loop_done == EVUNLOOP_ONE)
1426	loop_done = EVUNLOOP_CANCEL;	1502	loop_done = EVUNLOOP_CANCEL;
1427	}	1503	}
1428		1504
…		…
1455	head = &(*head)->next;	1531	head = &(*head)->next;
1456	}	1532	}
1457	}	1533	}
1458		1534
1459	void inline_speed	1535	void inline_speed
1460	ev_clear_pending (EV_P_ W w)	1536	clear_pending (EV_P_ W w)
1461	{	1537	{
1462	if (w->pending)	1538	if (w->pending)
1463	{	1539	{
1464	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1540	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1465	w->pending = 0;	1541	w->pending = 0;
1466	}	1542	}
1467	}	1543	}
1468		1544
		1545	int
		1546	ev_clear_pending (EV_P_ void *w)
		1547	{
		1548	W w_ = (W)w;
		1549	int pending = w_->pending;
		1550
		1551	if (expect_true (pending))
		1552	{
		1553	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1554	w_->pending = 0;
		1555	p->w = 0;
		1556	return p->events;
		1557	}
		1558	else
		1559	return 0;
		1560	}
		1561
		1562	void inline_size
		1563	pri_adjust (EV_P_ W w)
		1564	{
		1565	int pri = w->priority;
		1566	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1567	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1568	w->priority = pri;
		1569	}
		1570
1469	void inline_speed	1571	void inline_speed
1470	ev_start (EV_P_ W w, int active)	1572	ev_start (EV_P_ W w, int active)
1471	{	1573	{
1472	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1574	pri_adjust (EV_A_ w);
1473	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1474
1475	w->active = active;	1575	w->active = active;
1476	ev_ref (EV_A);	1576	ev_ref (EV_A);
1477	}	1577	}
1478		1578
1479	void inline_size	1579	void inline_size
…		…
1483	w->active = 0;	1583	w->active = 0;
1484	}	1584	}
1485		1585
1486	/*****************************************************************************/	1586	/*****************************************************************************/
1487		1587
1488	void	1588	void noinline
1489	ev_io_start (EV_P_ ev_io *w)	1589	ev_io_start (EV_P_ ev_io *w)
1490	{	1590	{
1491	int fd = w->fd;	1591	int fd = w->fd;
1492		1592
1493	if (expect_false (ev_is_active (w)))	1593	if (expect_false (ev_is_active (w)))
…		…
1500	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1600	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1501		1601
1502	fd_change (EV_A_ fd);	1602	fd_change (EV_A_ fd);
1503	}	1603	}
1504		1604
1505	void	1605	void noinline
1506	ev_io_stop (EV_P_ ev_io *w)	1606	ev_io_stop (EV_P_ ev_io *w)
1507	{	1607	{
1508	ev_clear_pending (EV_A_ (W)w);	1608	clear_pending (EV_A_ (W)w);
1509	if (expect_false (!ev_is_active (w)))	1609	if (expect_false (!ev_is_active (w)))
1510	return;	1610	return;
1511		1611
1512	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1612	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1513		1613
…		…
1515	ev_stop (EV_A_ (W)w);	1615	ev_stop (EV_A_ (W)w);
1516		1616
1517	fd_change (EV_A_ w->fd);	1617	fd_change (EV_A_ w->fd);
1518	}	1618	}
1519		1619
1520	void	1620	void noinline
1521	ev_timer_start (EV_P_ ev_timer *w)	1621	ev_timer_start (EV_P_ ev_timer *w)
1522	{	1622	{
1523	if (expect_false (ev_is_active (w)))	1623	if (expect_false (ev_is_active (w)))
1524	return;	1624	return;
1525		1625
…		…
1533	upheap ((WT *)timers, timercnt - 1);	1633	upheap ((WT *)timers, timercnt - 1);
1534		1634
1535	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/	1635	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
1536	}	1636	}
1537		1637
1538	void	1638	void noinline
1539	ev_timer_stop (EV_P_ ev_timer *w)	1639	ev_timer_stop (EV_P_ ev_timer *w)
1540	{	1640	{
1541	ev_clear_pending (EV_A_ (W)w);	1641	clear_pending (EV_A_ (W)w);
1542	if (expect_false (!ev_is_active (w)))	1642	if (expect_false (!ev_is_active (w)))
1543	return;	1643	return;
1544		1644
1545	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1645	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1546		1646
…		…
1557	((WT)w)->at -= mn_now;	1657	((WT)w)->at -= mn_now;
1558		1658
1559	ev_stop (EV_A_ (W)w);	1659	ev_stop (EV_A_ (W)w);
1560	}	1660	}
1561		1661
1562	void	1662	void noinline
1563	ev_timer_again (EV_P_ ev_timer *w)	1663	ev_timer_again (EV_P_ ev_timer *w)
1564	{	1664	{
1565	if (ev_is_active (w))	1665	if (ev_is_active (w))
1566	{	1666	{
1567	if (w->repeat)	1667	if (w->repeat)
…		…
1578	ev_timer_start (EV_A_ w);	1678	ev_timer_start (EV_A_ w);
1579	}	1679	}
1580	}	1680	}
1581		1681
1582	#if EV_PERIODIC_ENABLE	1682	#if EV_PERIODIC_ENABLE
1583	void	1683	void noinline
1584	ev_periodic_start (EV_P_ ev_periodic *w)	1684	ev_periodic_start (EV_P_ ev_periodic *w)
1585	{	1685	{
1586	if (expect_false (ev_is_active (w)))	1686	if (expect_false (ev_is_active (w)))
1587	return;	1687	return;
1588		1688
…		…
1601	upheap ((WT *)periodics, periodiccnt - 1);	1701	upheap ((WT *)periodics, periodiccnt - 1);
1602		1702
1603	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/	1703	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
1604	}	1704	}
1605		1705
1606	void	1706	void noinline
1607	ev_periodic_stop (EV_P_ ev_periodic *w)	1707	ev_periodic_stop (EV_P_ ev_periodic *w)
1608	{	1708	{
1609	ev_clear_pending (EV_A_ (W)w);	1709	clear_pending (EV_A_ (W)w);
1610	if (expect_false (!ev_is_active (w)))	1710	if (expect_false (!ev_is_active (w)))
1611	return;	1711	return;
1612		1712
1613	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1713	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1614		1714
…		…
1623	}	1723	}
1624		1724
1625	ev_stop (EV_A_ (W)w);	1725	ev_stop (EV_A_ (W)w);
1626	}	1726	}
1627		1727
1628	void	1728	void noinline
1629	ev_periodic_again (EV_P_ ev_periodic *w)	1729	ev_periodic_again (EV_P_ ev_periodic *w)
1630	{	1730	{
1631	/* TODO: use adjustheap and recalculation */	1731	/* TODO: use adjustheap and recalculation */
1632	ev_periodic_stop (EV_A_ w);	1732	ev_periodic_stop (EV_A_ w);
1633	ev_periodic_start (EV_A_ w);	1733	ev_periodic_start (EV_A_ w);
…		…
1636		1736
1637	#ifndef SA_RESTART	1737	#ifndef SA_RESTART
1638	# define SA_RESTART 0	1738	# define SA_RESTART 0
1639	#endif	1739	#endif
1640		1740
1641	void	1741	void noinline
1642	ev_signal_start (EV_P_ ev_signal *w)	1742	ev_signal_start (EV_P_ ev_signal *w)
1643	{	1743	{
1644	#if EV_MULTIPLICITY	1744	#if EV_MULTIPLICITY
1645	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1745	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1646	#endif	1746	#endif
…		…
1665	sigaction (w->signum, &sa, 0);	1765	sigaction (w->signum, &sa, 0);
1666	#endif	1766	#endif
1667	}	1767	}
1668	}	1768	}
1669		1769
1670	void	1770	void noinline
1671	ev_signal_stop (EV_P_ ev_signal *w)	1771	ev_signal_stop (EV_P_ ev_signal *w)
1672	{	1772	{
1673	ev_clear_pending (EV_A_ (W)w);	1773	clear_pending (EV_A_ (W)w);
1674	if (expect_false (!ev_is_active (w)))	1774	if (expect_false (!ev_is_active (w)))
1675	return;	1775	return;
1676		1776
1677	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1777	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1678	ev_stop (EV_A_ (W)w);	1778	ev_stop (EV_A_ (W)w);
…		…
1695	}	1795	}
1696		1796
1697	void	1797	void
1698	ev_child_stop (EV_P_ ev_child *w)	1798	ev_child_stop (EV_P_ ev_child *w)
1699	{	1799	{
1700	ev_clear_pending (EV_A_ (W)w);	1800	clear_pending (EV_A_ (W)w);
1701	if (expect_false (!ev_is_active (w)))	1801	if (expect_false (!ev_is_active (w)))
1702	return;	1802	return;
1703		1803
1704	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1804	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1705	ev_stop (EV_A_ (W)w);	1805	ev_stop (EV_A_ (W)w);
…		…
1713	# endif	1813	# endif
1714		1814
1715	#define DEF_STAT_INTERVAL 5.0074891	1815	#define DEF_STAT_INTERVAL 5.0074891
1716	#define MIN_STAT_INTERVAL 0.1074891	1816	#define MIN_STAT_INTERVAL 0.1074891
1717		1817
1718	void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	1818	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1719		1819
1720	#if EV_USE_INOTIFY	1820	#if EV_USE_INOTIFY
1721	# define EV_INOTIFY_BUFSIZE 8192	1821	# define EV_INOTIFY_BUFSIZE 8192
1722		1822
1723	static void noinline	1823	static void noinline
…		…
1831	ev_set_priority (&fs_w, EV_MAXPRI);	1931	ev_set_priority (&fs_w, EV_MAXPRI);
1832	ev_io_start (EV_A_ &fs_w);	1932	ev_io_start (EV_A_ &fs_w);
1833	}	1933	}
1834	}	1934	}
1835		1935
		1936	void inline_size
		1937	infy_fork (EV_P)
		1938	{
		1939	int slot;
		1940
		1941	if (fs_fd < 0)
		1942	return;
		1943
		1944	close (fs_fd);
		1945	fs_fd = inotify_init ();
		1946
		1947	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1948	{
		1949	WL w_ = fs_hash [slot].head;
		1950	fs_hash [slot].head = 0;
		1951
		1952	while (w_)
		1953	{
		1954	ev_stat w = (ev_stat )w_;
		1955	w_ = w_->next; /* lets us add this watcher */
		1956
		1957	w->wd = -1;
		1958
		1959	if (fs_fd >= 0)
		1960	infy_add (EV_A_ w); /* re-add, no matter what */
		1961	else
		1962	ev_timer_start (EV_A_ &w->timer);
		1963	}
		1964
		1965	}
		1966	}
		1967
1836	#endif	1968	#endif
1837		1969
1838	void	1970	void
1839	ev_stat_stat (EV_P_ ev_stat *w)	1971	ev_stat_stat (EV_P_ ev_stat *w)
1840	{	1972	{
…		…
1842	w->attr.st_nlink = 0;	1974	w->attr.st_nlink = 0;
1843	else if (!w->attr.st_nlink)	1975	else if (!w->attr.st_nlink)
1844	w->attr.st_nlink = 1;	1976	w->attr.st_nlink = 1;
1845	}	1977	}
1846		1978
1847	void noinline	1979	static void noinline
1848	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	1980	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1849	{	1981	{
1850	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));	1982	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
1851		1983
1852	/* we copy this here each the time so that */	1984	/* we copy this here each the time so that */
1853	/* prev has the old value when the callback gets invoked */	1985	/* prev has the old value when the callback gets invoked */
1854	w->prev = w->attr;	1986	w->prev = w->attr;
1855	ev_stat_stat (EV_A_ w);	1987	ev_stat_stat (EV_A_ w);
1856		1988
1857	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))	1989	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1990	if (
		1991	w->prev.st_dev != w->attr.st_dev
		1992	\|\| w->prev.st_ino != w->attr.st_ino
		1993	\|\| w->prev.st_mode != w->attr.st_mode
		1994	\|\| w->prev.st_nlink != w->attr.st_nlink
		1995	\|\| w->prev.st_uid != w->attr.st_uid
		1996	\|\| w->prev.st_gid != w->attr.st_gid
		1997	\|\| w->prev.st_rdev != w->attr.st_rdev
		1998	\|\| w->prev.st_size != w->attr.st_size
		1999	\|\| w->prev.st_atime != w->attr.st_atime
		2000	\|\| w->prev.st_mtime != w->attr.st_mtime
		2001	\|\| w->prev.st_ctime != w->attr.st_ctime
1858	{	2002	) {
1859	#if EV_USE_INOTIFY	2003	#if EV_USE_INOTIFY
1860	infy_del (EV_A_ w);	2004	infy_del (EV_A_ w);
1861	infy_add (EV_A_ w);	2005	infy_add (EV_A_ w);
1862	ev_stat_stat (EV_A_ w); /* avoid race... */	2006	ev_stat_stat (EV_A_ w); /* avoid race... */
1863	#endif	2007	#endif
…		…
1897	}	2041	}
1898		2042
1899	void	2043	void
1900	ev_stat_stop (EV_P_ ev_stat *w)	2044	ev_stat_stop (EV_P_ ev_stat *w)
1901	{	2045	{
1902	ev_clear_pending (EV_A_ (W)w);	2046	clear_pending (EV_A_ (W)w);
1903	if (expect_false (!ev_is_active (w)))	2047	if (expect_false (!ev_is_active (w)))
1904	return;	2048	return;
1905		2049
1906	#if EV_USE_INOTIFY	2050	#if EV_USE_INOTIFY
1907	infy_del (EV_A_ w);	2051	infy_del (EV_A_ w);
…		…
1910		2054
1911	ev_stop (EV_A_ (W)w);	2055	ev_stop (EV_A_ (W)w);
1912	}	2056	}
1913	#endif	2057	#endif
1914		2058
		2059	#if EV_IDLE_ENABLE
1915	void	2060	void
1916	ev_idle_start (EV_P_ ev_idle *w)	2061	ev_idle_start (EV_P_ ev_idle *w)
1917	{	2062	{
1918	if (expect_false (ev_is_active (w)))	2063	if (expect_false (ev_is_active (w)))
1919	return;	2064	return;
1920		2065
		2066	pri_adjust (EV_A_ (W)w);
		2067
		2068	{
		2069	int active = ++idlecnt [ABSPRI (w)];
		2070
		2071	++idleall;
1921	ev_start (EV_A_ (W)w, ++idlecnt);	2072	ev_start (EV_A_ (W)w, active);
		2073
1922	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);	2074	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1923	idles [idlecnt - 1] = w;	2075	idles [ABSPRI (w)][active - 1] = w;
		2076	}
1924	}	2077	}
1925		2078
1926	void	2079	void
1927	ev_idle_stop (EV_P_ ev_idle *w)	2080	ev_idle_stop (EV_P_ ev_idle *w)
1928	{	2081	{
1929	ev_clear_pending (EV_A_ (W)w);	2082	clear_pending (EV_A_ (W)w);
1930	if (expect_false (!ev_is_active (w)))	2083	if (expect_false (!ev_is_active (w)))
1931	return;	2084	return;
1932		2085
1933	{	2086	{
1934	int active = ((W)w)->active;	2087	int active = ((W)w)->active;
1935	idles [active - 1] = idles [--idlecnt];	2088
		2089	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
1936	((W)idles [active - 1])->active = active;	2090	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2091
		2092	ev_stop (EV_A_ (W)w);
		2093	--idleall;
1937	}	2094	}
1938
1939	ev_stop (EV_A_ (W)w);
1940	}	2095	}
		2096	#endif
1941		2097
1942	void	2098	void
1943	ev_prepare_start (EV_P_ ev_prepare *w)	2099	ev_prepare_start (EV_P_ ev_prepare *w)
1944	{	2100	{
1945	if (expect_false (ev_is_active (w)))	2101	if (expect_false (ev_is_active (w)))
…		…
1951	}	2107	}
1952		2108
1953	void	2109	void
1954	ev_prepare_stop (EV_P_ ev_prepare *w)	2110	ev_prepare_stop (EV_P_ ev_prepare *w)
1955	{	2111	{
1956	ev_clear_pending (EV_A_ (W)w);	2112	clear_pending (EV_A_ (W)w);
1957	if (expect_false (!ev_is_active (w)))	2113	if (expect_false (!ev_is_active (w)))
1958	return;	2114	return;
1959		2115
1960	{	2116	{
1961	int active = ((W)w)->active;	2117	int active = ((W)w)->active;
…		…
1978	}	2134	}
1979		2135
1980	void	2136	void
1981	ev_check_stop (EV_P_ ev_check *w)	2137	ev_check_stop (EV_P_ ev_check *w)
1982	{	2138	{
1983	ev_clear_pending (EV_A_ (W)w);	2139	clear_pending (EV_A_ (W)w);
1984	if (expect_false (!ev_is_active (w)))	2140	if (expect_false (!ev_is_active (w)))
1985	return;	2141	return;
1986		2142
1987	{	2143	{
1988	int active = ((W)w)->active;	2144	int active = ((W)w)->active;
…		…
2030	}	2186	}
2031		2187
2032	void	2188	void
2033	ev_embed_stop (EV_P_ ev_embed *w)	2189	ev_embed_stop (EV_P_ ev_embed *w)
2034	{	2190	{
2035	ev_clear_pending (EV_A_ (W)w);	2191	clear_pending (EV_A_ (W)w);
2036	if (expect_false (!ev_is_active (w)))	2192	if (expect_false (!ev_is_active (w)))
2037	return;	2193	return;
2038		2194
2039	ev_io_stop (EV_A_ &w->io);	2195	ev_io_stop (EV_A_ &w->io);
2040		2196
…		…
2055	}	2211	}
2056		2212
2057	void	2213	void
2058	ev_fork_stop (EV_P_ ev_fork *w)	2214	ev_fork_stop (EV_P_ ev_fork *w)
2059	{	2215	{
2060	ev_clear_pending (EV_A_ (W)w);	2216	clear_pending (EV_A_ (W)w);
2061	if (expect_false (!ev_is_active (w)))	2217	if (expect_false (!ev_is_active (w)))
2062	return;	2218	return;
2063		2219
2064	{	2220	{
2065	int active = ((W)w)->active;	2221	int active = ((W)w)->active;

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Comparing libev/ev.c (file contents): Revision 1.153 by root, Wed Nov 28 11:41:18 2007 UTC vs. Revision 1.172 by root, Sun Dec 9 02:27:44 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.153 by root, Wed Nov 28 11:41:18 2007 UTC vs.
Revision 1.172 by root, Sun Dec 9 02:27:44 2007 UTC