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

Comparing libev/ev.c (file contents):
Revision 1.58 by root, Sun Nov 4 16:52:52 2007 UTC vs.
Revision 1.115 by root, Wed Nov 14 04:53:21 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	#ifndef EV_EMBED	31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
32	# include "config.h"	37	# include "config.h"
		38
		39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
		41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
		44	# define EV_USE_REALTIME 1
		45	# endif
		46	# endif
		47
		48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
		49	# define EV_USE_SELECT 1
		50	# endif
		51
		52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
		53	# define EV_USE_POLL 1
		54	# endif
		55
		56	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
		57	# define EV_USE_EPOLL 1
		58	# endif
		59
		60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
		61	# define EV_USE_KQUEUE 1
		62	# endif
		63
33	#endif	64	#endif
34		65
35	#include <math.h>	66	#include <math.h>
36	#include <stdlib.h>	67	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	68	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	69	#include <stddef.h>
41		70
42	#include <stdio.h>	71	#include <stdio.h>
43		72
44	#include <assert.h>	73	#include <assert.h>
45	#include <errno.h>	74	#include <errno.h>
46	#include <sys/types.h>	75	#include <sys/types.h>
		76	#include <time.h>
		77
		78	#include <signal.h>
		79
47	#ifndef WIN32	80	#ifndef _WIN32
		81	# include <unistd.h>
		82	# include <sys/time.h>
48	# include <sys/wait.h>	83	# include <sys/wait.h>
		84	#else
		85	# define WIN32_LEAN_AND_MEAN
		86	# include <windows.h>
		87	# ifndef EV_SELECT_IS_WINSOCKET
		88	# define EV_SELECT_IS_WINSOCKET 1
49	#endif	89	# endif
50	#include <sys/time.h>	90	#endif
51	#include <time.h>
52		91
53	/**/	92	/**/
54		93
55	#ifndef EV_USE_MONOTONIC	94	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	95	# define EV_USE_MONOTONIC 1
57	#endif	96	#endif
58		97
59	#ifndef EV_USE_SELECT	98	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	99	# define EV_USE_SELECT 1
		100	# define EV_SELECT_USE_FD_SET 1
61	#endif	101	#endif
62		102
63	#ifndef EV_USEV_POLL	103	#ifndef EV_USE_POLL
64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */	104	# ifdef _WIN32
		105	# define EV_USE_POLL 0
		106	# else
		107	# define EV_USE_POLL 1
		108	# endif
65	#endif	109	#endif
66		110
67	#ifndef EV_USE_EPOLL	111	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	112	# define EV_USE_EPOLL 0
69	#endif	113	#endif
…		…
75	#ifndef EV_USE_REALTIME	119	#ifndef EV_USE_REALTIME
76	# define EV_USE_REALTIME 1	120	# define EV_USE_REALTIME 1
77	#endif	121	#endif
78		122
79	/**/	123	/**/
		124
		125	/* darwin simply cannot be helped */
		126	#ifdef __APPLE__
		127	# undef EV_USE_POLL
		128	# undef EV_USE_KQUEUE
		129	#endif
80		130
81	#ifndef CLOCK_MONOTONIC	131	#ifndef CLOCK_MONOTONIC
82	# undef EV_USE_MONOTONIC	132	# undef EV_USE_MONOTONIC
83	# define EV_USE_MONOTONIC 0	133	# define EV_USE_MONOTONIC 0
84	#endif	134	#endif
85		135
86	#ifndef CLOCK_REALTIME	136	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	137	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	138	# define EV_USE_REALTIME 0
		139	#endif
		140
		141	#if EV_SELECT_IS_WINSOCKET
		142	# include <winsock.h>
89	#endif	143	#endif
90		144
91	/**/	145	/**/
92		146
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	147	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	148	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	149	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
96	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	150	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
97		151
98	#ifndef EV_EMBED	152	#ifdef EV_H
		153	# include EV_H
		154	#else
99	# include "ev.h"	155	# include "ev.h"
100	#endif	156	#endif
101		157
102	#if __GNUC__ >= 3	158	#if __GNUC__ >= 3
103	# define expect(expr,value) __builtin_expect ((expr),(value))	159	# define expect(expr,value) __builtin_expect ((expr),(value))
…		…
111	#define expect_true(expr) expect ((expr) != 0, 1)	167	#define expect_true(expr) expect ((expr) != 0, 1)
112		168
113	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	169	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
114	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	170	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
115		171
		172	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		173	#define EMPTY2(a,b) /* used to suppress some warnings */
		174
116	typedef struct ev_watcher *W;	175	typedef struct ev_watcher *W;
117	typedef struct ev_watcher_list *WL;	176	typedef struct ev_watcher_list *WL;
118	typedef struct ev_watcher_time *WT;	177	typedef struct ev_watcher_time *WT;
119		178
120	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	179	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
121		180
		181	#ifdef _WIN32
		182	# include "ev_win32.c"
		183	#endif
		184
122	/*****************************************************************************/	185	/*****************************************************************************/
123		186
		187	static void (syserr_cb)(const char msg);
		188
		189	void ev_set_syserr_cb (void (cb)(const char msg))
		190	{
		191	syserr_cb = cb;
		192	}
		193
		194	static void
		195	syserr (const char *msg)
		196	{
		197	if (!msg)
		198	msg = "(libev) system error";
		199
		200	if (syserr_cb)
		201	syserr_cb (msg);
		202	else
		203	{
		204	perror (msg);
		205	abort ();
		206	}
		207	}
		208
		209	static void (alloc)(void *ptr, long size);
		210
		211	void ev_set_allocator (void (cb)(void *ptr, long size))
		212	{
		213	alloc = cb;
		214	}
		215
		216	static void *
		217	ev_realloc (void *ptr, long size)
		218	{
		219	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		220
		221	if (!ptr && size)
		222	{
		223	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		224	abort ();
		225	}
		226
		227	return ptr;
		228	}
		229
		230	#define ev_malloc(size) ev_realloc (0, (size))
		231	#define ev_free(ptr) ev_realloc ((ptr), 0)
		232
		233	/*****************************************************************************/
		234
124	typedef struct	235	typedef struct
125	{	236	{
126	struct ev_watcher_list *head;	237	WL head;
127	unsigned char events;	238	unsigned char events;
128	unsigned char reify;	239	unsigned char reify;
		240	#if EV_SELECT_IS_WINSOCKET
		241	SOCKET handle;
		242	#endif
129	} ANFD;	243	} ANFD;
130		244
131	typedef struct	245	typedef struct
132	{	246	{
133	W w;	247	W w;
134	int events;	248	int events;
135	} ANPENDING;	249	} ANPENDING;
136		250
137	#if EV_MULTIPLICITY	251	#if EV_MULTIPLICITY
138		252
139	struct ev_loop	253	struct ev_loop
140	{	254	{
		255	ev_tstamp ev_rt_now;
		256	#define ev_rt_now ((loop)->ev_rt_now)
141	# define VAR(name,decl) decl;	257	#define VAR(name,decl) decl;
142	# include "ev_vars.h"	258	#include "ev_vars.h"
143	};
144	# undef VAR	259	#undef VAR
		260	};
145	# include "ev_wrap.h"	261	#include "ev_wrap.h"
		262
		263	struct ev_loop default_loop_struct;
		264	static struct ev_loop *default_loop;
146		265
147	#else	266	#else
148		267
		268	ev_tstamp ev_rt_now;
149	# define VAR(name,decl) static decl;	269	#define VAR(name,decl) static decl;
150	# include "ev_vars.h"	270	#include "ev_vars.h"
151	# undef VAR	271	#undef VAR
		272
		273	static int default_loop;
152		274
153	#endif	275	#endif
154		276
155	/*****************************************************************************/	277	/*****************************************************************************/
156		278
157	inline ev_tstamp	279	ev_tstamp
158	ev_time (void)	280	ev_time (void)
159	{	281	{
160	#if EV_USE_REALTIME	282	#if EV_USE_REALTIME
161	struct timespec ts;	283	struct timespec ts;
162	clock_gettime (CLOCK_REALTIME, &ts);	284	clock_gettime (CLOCK_REALTIME, &ts);
…		…
181	#endif	303	#endif
182		304
183	return ev_time ();	305	return ev_time ();
184	}	306	}
185		307
		308	#if EV_MULTIPLICITY
186	ev_tstamp	309	ev_tstamp
187	ev_now (EV_P)	310	ev_now (EV_P)
188	{	311	{
189	return rt_now;	312	return ev_rt_now;
190	}	313	}
		314	#endif
191		315
192	#define array_roundsize(base,n) ((n) \| 4 & ~3)	316	#define array_roundsize(type,n) (((n) \| 4) & ~3)
193		317
194	#define array_needsize(base,cur,cnt,init) \	318	#define array_needsize(type,base,cur,cnt,init) \
195	if (expect_false ((cnt) > cur)) \	319	if (expect_false ((cnt) > cur)) \
196	{ \	320	{ \
197	int newcnt = cur; \	321	int newcnt = cur; \
198	do \	322	do \
199	{ \	323	{ \
200	newcnt = array_roundsize (base, newcnt << 1); \	324	newcnt = array_roundsize (type, newcnt << 1); \
201	} \	325	} \
202	while ((cnt) > newcnt); \	326	while ((cnt) > newcnt); \
203	\	327	\
204	base = realloc (base, sizeof (base) (newcnt)); \	328	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
205	init (base + cur, newcnt - cur); \	329	init (base + cur, newcnt - cur); \
206	cur = newcnt; \	330	cur = newcnt; \
207	}	331	}
		332
		333	#define array_slim(type,stem) \
		334	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		335	{ \
		336	stem ## max = array_roundsize (stem ## cnt >> 1); \
		337	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		338	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		339	}
		340
		341	#define array_free(stem, idx) \
		342	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
208		343
209	/*****************************************************************************/	344	/*****************************************************************************/
210		345
211	static void	346	static void
212	anfds_init (ANFD *base, int count)	347	anfds_init (ANFD *base, int count)
…		…
219		354
220	++base;	355	++base;
221	}	356	}
222	}	357	}
223		358
224	static void	359	void
225	event (EV_P_ W w, int events)	360	ev_feed_event (EV_P_ void *w, int revents)
226	{	361	{
		362	W w_ = (W)w;
		363
227	if (w->pending)	364	if (w_->pending)
228	{	365	{
229	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	366	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
230	return;	367	return;
231	}	368	}
232		369
233	w->pending = ++pendingcnt [ABSPRI (w)];	370	w_->pending = ++pendingcnt [ABSPRI (w_)];
234	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	371	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
235	pendings [ABSPRI (w)][w->pending - 1].w = w;	372	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
236	pendings [ABSPRI (w)][w->pending - 1].events = events;	373	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
237	}	374	}
238		375
239	static void	376	static void
240	queue_events (EV_P_ W *events, int eventcnt, int type)	377	queue_events (EV_P_ W *events, int eventcnt, int type)
241	{	378	{
242	int i;	379	int i;
243		380
244	for (i = 0; i < eventcnt; ++i)	381	for (i = 0; i < eventcnt; ++i)
245	event (EV_A_ events [i], type);	382	ev_feed_event (EV_A_ events [i], type);
246	}	383	}
247		384
248	static void	385	inline void
249	fd_event (EV_P_ int fd, int events)	386	fd_event (EV_P_ int fd, int revents)
250	{	387	{
251	ANFD *anfd = anfds + fd;	388	ANFD *anfd = anfds + fd;
252	struct ev_io *w;	389	struct ev_io *w;
253		390
254	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	391	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
255	{	392	{
256	int ev = w->events & events;	393	int ev = w->events & revents;
257		394
258	if (ev)	395	if (ev)
259	event (EV_A_ (W)w, ev);	396	ev_feed_event (EV_A_ (W)w, ev);
260	}	397	}
		398	}
		399
		400	void
		401	ev_feed_fd_event (EV_P_ int fd, int revents)
		402	{
		403	fd_event (EV_A_ fd, revents);
261	}	404	}
262		405
263	/*****************************************************************************/	406	/*****************************************************************************/
264		407
265	static void	408	static void
…		…
276	int events = 0;	419	int events = 0;
277		420
278	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	421	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
279	events \|= w->events;	422	events \|= w->events;
280		423
		424	#if EV_SELECT_IS_WINSOCKET
		425	if (events)
		426	{
		427	unsigned long argp;
		428	anfd->handle = _get_osfhandle (fd);
		429	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		430	}
		431	#endif
		432
281	anfd->reify = 0;	433	anfd->reify = 0;
282		434
283	if (anfd->events != events)
284	{
285	method_modify (EV_A_ fd, anfd->events, events);	435	method_modify (EV_A_ fd, anfd->events, events);
286	anfd->events = events;	436	anfd->events = events;
287	}
288	}	437	}
289		438
290	fdchangecnt = 0;	439	fdchangecnt = 0;
291	}	440	}
292		441
293	static void	442	static void
294	fd_change (EV_P_ int fd)	443	fd_change (EV_P_ int fd)
295	{	444	{
296	if (anfds [fd].reify \|\| fdchangecnt < 0)	445	if (anfds [fd].reify)
297	return;	446	return;
298		447
299	anfds [fd].reify = 1;	448	anfds [fd].reify = 1;
300		449
301	++fdchangecnt;	450	++fdchangecnt;
302	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	451	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
303	fdchanges [fdchangecnt - 1] = fd;	452	fdchanges [fdchangecnt - 1] = fd;
304	}	453	}
305		454
306	static void	455	static void
307	fd_kill (EV_P_ int fd)	456	fd_kill (EV_P_ int fd)
…		…
309	struct ev_io *w;	458	struct ev_io *w;
310		459
311	while ((w = (struct ev_io *)anfds [fd].head))	460	while ((w = (struct ev_io *)anfds [fd].head))
312	{	461	{
313	ev_io_stop (EV_A_ w);	462	ev_io_stop (EV_A_ w);
314	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	463	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
315	}	464	}
		465	}
		466
		467	static int
		468	fd_valid (int fd)
		469	{
		470	#ifdef _WIN32
		471	return _get_osfhandle (fd) != -1;
		472	#else
		473	return fcntl (fd, F_GETFD) != -1;
		474	#endif
316	}	475	}
317		476
318	/* called on EBADF to verify fds */	477	/* called on EBADF to verify fds */
319	static void	478	static void
320	fd_ebadf (EV_P)	479	fd_ebadf (EV_P)
321	{	480	{
322	int fd;	481	int fd;
323		482
324	for (fd = 0; fd < anfdmax; ++fd)	483	for (fd = 0; fd < anfdmax; ++fd)
325	if (anfds [fd].events)	484	if (anfds [fd].events)
326	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	485	if (!fd_valid (fd) == -1 && errno == EBADF)
327	fd_kill (EV_A_ fd);	486	fd_kill (EV_A_ fd);
328	}	487	}
329		488
330	/* called on ENOMEM in select/poll to kill some fds and retry */	489	/* called on ENOMEM in select/poll to kill some fds and retry */
331	static void	490	static void
332	fd_enomem (EV_P)	491	fd_enomem (EV_P)
333	{	492	{
334	int fd = anfdmax;	493	int fd;
335		494
336	while (fd--)	495	for (fd = anfdmax; fd--; )
337	if (anfds [fd].events)	496	if (anfds [fd].events)
338	{	497	{
339	close (fd);
340	fd_kill (EV_A_ fd);	498	fd_kill (EV_A_ fd);
341	return;	499	return;
342	}	500	}
343	}	501	}
344		502
345	/* susually called after fork if method needs to re-arm all fds from scratch */	503	/* usually called after fork if method needs to re-arm all fds from scratch */
346	static void	504	static void
347	fd_rearm_all (EV_P)	505	fd_rearm_all (EV_P)
348	{	506	{
349	int fd;	507	int fd;
350		508
351	/* this should be highly optimised to not do anything but set a flag */	509	/* this should be highly optimised to not do anything but set a flag */
352	for (fd = 0; fd < anfdmax; ++fd)	510	for (fd = 0; fd < anfdmax; ++fd)
353	if (anfds [fd].events)	511	if (anfds [fd].events)
354	{	512	{
355	anfds [fd].events = 0;	513	anfds [fd].events = 0;
356	fd_change (fd);	514	fd_change (EV_A_ fd);
357	}	515	}
358	}	516	}
359		517
360	/*****************************************************************************/	518	/*****************************************************************************/
361		519
…		…
365	WT w = heap [k];	523	WT w = heap [k];
366		524
367	while (k && heap [k >> 1]->at > w->at)	525	while (k && heap [k >> 1]->at > w->at)
368	{	526	{
369	heap [k] = heap [k >> 1];	527	heap [k] = heap [k >> 1];
370	heap [k]->active = k + 1;	528	((W)heap [k])->active = k + 1;
371	k >>= 1;	529	k >>= 1;
372	}	530	}
373		531
374	heap [k] = w;	532	heap [k] = w;
375	heap [k]->active = k + 1;	533	((W)heap [k])->active = k + 1;
376		534
377	}	535	}
378		536
379	static void	537	static void
380	downheap (WT *heap, int N, int k)	538	downheap (WT *heap, int N, int k)
…		…
390		548
391	if (w->at <= heap [j]->at)	549	if (w->at <= heap [j]->at)
392	break;	550	break;
393		551
394	heap [k] = heap [j];	552	heap [k] = heap [j];
395	heap [k]->active = k + 1;	553	((W)heap [k])->active = k + 1;
396	k = j;	554	k = j;
397	}	555	}
398		556
399	heap [k] = w;	557	heap [k] = w;
400	heap [k]->active = k + 1;	558	((W)heap [k])->active = k + 1;
		559	}
		560
		561	inline void
		562	adjustheap (WT *heap, int N, int k)
		563	{
		564	upheap (heap, k);
		565	downheap (heap, N, k);
401	}	566	}
402		567
403	/*****************************************************************************/	568	/*****************************************************************************/
404		569
405	typedef struct	570	typedef struct
406	{	571	{
407	struct ev_watcher_list *head;	572	WL head;
408	sig_atomic_t volatile gotsig;	573	sig_atomic_t volatile gotsig;
409	} ANSIG;	574	} ANSIG;
410		575
411	static ANSIG *signals;	576	static ANSIG *signals;
412	static int signalmax;	577	static int signalmax;
413		578
414	static int sigpipe [2];	579	static int sigpipe [2];
415	static sig_atomic_t volatile gotsig;	580	static sig_atomic_t volatile gotsig;
		581	static struct ev_io sigev;
416		582
417	static void	583	static void
418	signals_init (ANSIG *base, int count)	584	signals_init (ANSIG *base, int count)
419	{	585	{
420	while (count--)	586	while (count--)
…		…
427	}	593	}
428		594
429	static void	595	static void
430	sighandler (int signum)	596	sighandler (int signum)
431	{	597	{
		598	#if _WIN32
		599	signal (signum, sighandler);
		600	#endif
		601
432	signals [signum - 1].gotsig = 1;	602	signals [signum - 1].gotsig = 1;
433		603
434	if (!gotsig)	604	if (!gotsig)
435	{	605	{
436	int old_errno = errno;	606	int old_errno = errno;
…		…
438	write (sigpipe [1], &signum, 1);	608	write (sigpipe [1], &signum, 1);
439	errno = old_errno;	609	errno = old_errno;
440	}	610	}
441	}	611	}
442		612
		613	void
		614	ev_feed_signal_event (EV_P_ int signum)
		615	{
		616	WL w;
		617
		618	#if EV_MULTIPLICITY
		619	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		620	#endif
		621
		622	--signum;
		623
		624	if (signum < 0 \|\| signum >= signalmax)
		625	return;
		626
		627	signals [signum].gotsig = 0;
		628
		629	for (w = signals [signum].head; w; w = w->next)
		630	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		631	}
		632
443	static void	633	static void
444	sigcb (EV_P_ struct ev_io *iow, int revents)	634	sigcb (EV_P_ struct ev_io *iow, int revents)
445	{	635	{
446	struct ev_watcher_list *w;
447	int signum;	636	int signum;
448		637
449	read (sigpipe [0], &revents, 1);	638	read (sigpipe [0], &revents, 1);
450	gotsig = 0;	639	gotsig = 0;
451		640
452	for (signum = signalmax; signum--; )	641	for (signum = signalmax; signum--; )
453	if (signals [signum].gotsig)	642	if (signals [signum].gotsig)
454	{	643	ev_feed_signal_event (EV_A_ signum + 1);
455	signals [signum].gotsig = 0;	644	}
456		645
457	for (w = signals [signum].head; w; w = w->next)	646	inline void
458	event (EV_A_ (W)w, EV_SIGNAL);	647	fd_intern (int fd)
459	}	648	{
		649	#ifdef _WIN32
		650	int arg = 1;
		651	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		652	#else
		653	fcntl (fd, F_SETFD, FD_CLOEXEC);
		654	fcntl (fd, F_SETFL, O_NONBLOCK);
		655	#endif
460	}	656	}
461		657
462	static void	658	static void
463	siginit (EV_P)	659	siginit (EV_P)
464	{	660	{
465	#ifndef WIN32	661	fd_intern (sigpipe [0]);
466	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	662	fd_intern (sigpipe [1]);
467	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
468
469	/* rather than sort out wether we really need nb, set it */
470	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
471	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
472	#endif
473		663
474	ev_io_set (&sigev, sigpipe [0], EV_READ);	664	ev_io_set (&sigev, sigpipe [0], EV_READ);
475	ev_io_start (EV_A_ &sigev);	665	ev_io_start (EV_A_ &sigev);
476	ev_unref (EV_A); /* child watcher should not keep loop alive */	666	ev_unref (EV_A); /* child watcher should not keep loop alive */
477	}	667	}
478		668
479	/*****************************************************************************/	669	/*****************************************************************************/
480		670
		671	static struct ev_child *childs [PID_HASHSIZE];
		672
481	#ifndef WIN32	673	#ifndef _WIN32
		674
		675	static struct ev_signal childev;
482		676
483	#ifndef WCONTINUED	677	#ifndef WCONTINUED
484	# define WCONTINUED 0	678	# define WCONTINUED 0
485	#endif	679	#endif
486		680
…		…
490	struct ev_child *w;	684	struct ev_child *w;
491		685
492	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	686	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
493	if (w->pid == pid \|\| !w->pid)	687	if (w->pid == pid \|\| !w->pid)
494	{	688	{
495	w->priority = sw->priority; /* need to do it now */	689	ev_priority (w) = ev_priority (sw); /* need to do it now */
496	w->rpid = pid;	690	w->rpid = pid;
497	w->rstatus = status;	691	w->rstatus = status;
498	event (EV_A_ (W)w, EV_CHILD);	692	ev_feed_event (EV_A_ (W)w, EV_CHILD);
499	}	693	}
500	}	694	}
501		695
502	static void	696	static void
503	childcb (EV_P_ struct ev_signal *sw, int revents)	697	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
505	int pid, status;	699	int pid, status;
506		700
507	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	701	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
508	{	702	{
509	/* make sure we are called again until all childs have been reaped */	703	/* make sure we are called again until all childs have been reaped */
510	event (EV_A_ (W)sw, EV_SIGNAL);	704	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
511		705
512	child_reap (EV_A_ sw, pid, pid, status);	706	child_reap (EV_A_ sw, pid, pid, status);
513	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	707	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
514	}	708	}
515	}	709	}
…		…
522	# include "ev_kqueue.c"	716	# include "ev_kqueue.c"
523	#endif	717	#endif
524	#if EV_USE_EPOLL	718	#if EV_USE_EPOLL
525	# include "ev_epoll.c"	719	# include "ev_epoll.c"
526	#endif	720	#endif
527	#if EV_USEV_POLL	721	#if EV_USE_POLL
528	# include "ev_poll.c"	722	# include "ev_poll.c"
529	#endif	723	#endif
530	#if EV_USE_SELECT	724	#if EV_USE_SELECT
531	# include "ev_select.c"	725	# include "ev_select.c"
532	#endif	726	#endif
…		…
545		739
546	/* return true if we are running with elevated privileges and should ignore env variables */	740	/* return true if we are running with elevated privileges and should ignore env variables */
547	static int	741	static int
548	enable_secure (void)	742	enable_secure (void)
549	{	743	{
550	#ifdef WIN32	744	#ifdef _WIN32
551	return 0;	745	return 0;
552	#else	746	#else
553	return getuid () != geteuid ()	747	return getuid () != geteuid ()
554	\|\| getgid () != getegid ();	748	\|\| getgid () != getegid ();
555	#endif	749	#endif
556	}	750	}
557		751
558	int	752	unsigned int
559	ev_method (EV_P)	753	ev_method (EV_P)
560	{	754	{
561	return method;	755	return method;
562	}	756	}
563		757
564	static void	758	static void
565	loop_init (EV_P_ int methods)	759	loop_init (EV_P_ unsigned int flags)
566	{	760	{
567	if (!method)	761	if (!method)
568	{	762	{
569	#if EV_USE_MONOTONIC	763	#if EV_USE_MONOTONIC
570	{	764	{
…		…
572	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	766	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
573	have_monotonic = 1;	767	have_monotonic = 1;
574	}	768	}
575	#endif	769	#endif
576		770
577	rt_now = ev_time ();	771	ev_rt_now = ev_time ();
578	mn_now = get_clock ();	772	mn_now = get_clock ();
579	now_floor = mn_now;	773	now_floor = mn_now;
580	rtmn_diff = rt_now - mn_now;	774	rtmn_diff = ev_rt_now - mn_now;
581		775
582	if (methods == EVMETHOD_AUTO)	776	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
583	if (!enable_secure () && getenv ("LIBEV_METHODS"))
584	methods = atoi (getenv ("LIBEV_METHODS"));	777	flags = atoi (getenv ("LIBEV_FLAGS"));
585	else	778
586	methods = EVMETHOD_ANY;	779	if (!(flags & 0x0000ffff))
		780	flags \|= 0x0000ffff;
587		781
588	method = 0;	782	method = 0;
589	#if EV_USE_KQUEUE	783	#if EV_USE_KQUEUE
590	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	784	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
591	#endif	785	#endif
592	#if EV_USE_EPOLL	786	#if EV_USE_EPOLL
593	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	787	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
594	#endif	788	#endif
595	#if EV_USEV_POLL	789	#if EV_USE_POLL
596	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	790	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
597	#endif	791	#endif
598	#if EV_USE_SELECT	792	#if EV_USE_SELECT
599	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	793	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
600	#endif	794	#endif
		795
		796	ev_init (&sigev, sigcb);
		797	ev_set_priority (&sigev, EV_MAXPRI);
601	}	798	}
602	}	799	}
603		800
604	void	801	void
605	loop_destroy (EV_P)	802	loop_destroy (EV_P)
606	{	803	{
		804	int i;
		805
607	#if EV_USE_KQUEUE	806	#if EV_USE_KQUEUE
608	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	807	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
609	#endif	808	#endif
610	#if EV_USE_EPOLL	809	#if EV_USE_EPOLL
611	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	810	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
612	#endif	811	#endif
613	#if EV_USEV_POLL	812	#if EV_USE_POLL
614	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	813	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
615	#endif	814	#endif
616	#if EV_USE_SELECT	815	#if EV_USE_SELECT
617	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	816	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
618	#endif	817	#endif
619		818
		819	for (i = NUMPRI; i--; )
		820	array_free (pending, [i]);
		821
		822	/* have to use the microsoft-never-gets-it-right macro */
		823	array_free (fdchange, EMPTY0);
		824	array_free (timer, EMPTY0);
		825	#if EV_PERIODICS
		826	array_free (periodic, EMPTY0);
		827	#endif
		828	array_free (idle, EMPTY0);
		829	array_free (prepare, EMPTY0);
		830	array_free (check, EMPTY0);
		831
620	method = 0;	832	method = 0;
621	/TODO/
622	}	833	}
623		834
624	void	835	static void
625	loop_fork (EV_P)	836	loop_fork (EV_P)
626	{	837	{
627	/TODO/
628	#if EV_USE_EPOLL	838	#if EV_USE_EPOLL
629	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	839	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
630	#endif	840	#endif
631	#if EV_USE_KQUEUE	841	#if EV_USE_KQUEUE
632	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	842	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
633	#endif	843	#endif
		844
		845	if (ev_is_active (&sigev))
		846	{
		847	/* default loop */
		848
		849	ev_ref (EV_A);
		850	ev_io_stop (EV_A_ &sigev);
		851	close (sigpipe [0]);
		852	close (sigpipe [1]);
		853
		854	while (pipe (sigpipe))
		855	syserr ("(libev) error creating pipe");
		856
		857	siginit (EV_A);
		858	}
		859
		860	postfork = 0;
634	}	861	}
635		862
636	#if EV_MULTIPLICITY	863	#if EV_MULTIPLICITY
637	struct ev_loop *	864	struct ev_loop *
638	ev_loop_new (int methods)	865	ev_loop_new (unsigned int flags)
639	{	866	{
640	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));	867	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
641		868
		869	memset (loop, 0, sizeof (struct ev_loop));
		870
642	loop_init (EV_A_ methods);	871	loop_init (EV_A_ flags);
643		872
644	if (ev_methods (EV_A))	873	if (ev_method (EV_A))
645	return loop;	874	return loop;
646		875
647	return 0;	876	return 0;
648	}	877	}
649		878
650	void	879	void
651	ev_loop_destroy (EV_P)	880	ev_loop_destroy (EV_P)
652	{	881	{
653	loop_destroy (EV_A);	882	loop_destroy (EV_A);
654	free (loop);	883	ev_free (loop);
655	}	884	}
656		885
657	void	886	void
658	ev_loop_fork (EV_P)	887	ev_loop_fork (EV_P)
659	{	888	{
660	loop_fork (EV_A);	889	postfork = 1;
661	}	890	}
662		891
663	#endif	892	#endif
664		893
665	#if EV_MULTIPLICITY	894	#if EV_MULTIPLICITY
666	struct ev_loop default_loop_struct;
667	static struct ev_loop *default_loop;
668
669	struct ev_loop *	895	struct ev_loop *
670	#else	896	#else
671	static int default_loop;
672
673	int	897	int
674	#endif	898	#endif
675	ev_default_loop (int methods)	899	ev_default_loop (unsigned int flags)
676	{	900	{
677	if (sigpipe [0] == sigpipe [1])	901	if (sigpipe [0] == sigpipe [1])
678	if (pipe (sigpipe))	902	if (pipe (sigpipe))
679	return 0;	903	return 0;
680		904
…		…
684	struct ev_loop *loop = default_loop = &default_loop_struct;	908	struct ev_loop *loop = default_loop = &default_loop_struct;
685	#else	909	#else
686	default_loop = 1;	910	default_loop = 1;
687	#endif	911	#endif
688		912
689	loop_init (EV_A_ methods);	913	loop_init (EV_A_ flags);
690		914
691	if (ev_method (EV_A))	915	if (ev_method (EV_A))
692	{	916	{
693	ev_watcher_init (&sigev, sigcb);
694	ev_set_priority (&sigev, EV_MAXPRI);
695	siginit (EV_A);	917	siginit (EV_A);
696		918
697	#ifndef WIN32	919	#ifndef _WIN32
698	ev_signal_init (&childev, childcb, SIGCHLD);	920	ev_signal_init (&childev, childcb, SIGCHLD);
699	ev_set_priority (&childev, EV_MAXPRI);	921	ev_set_priority (&childev, EV_MAXPRI);
700	ev_signal_start (EV_A_ &childev);	922	ev_signal_start (EV_A_ &childev);
701	ev_unref (EV_A); /* child watcher should not keep loop alive */	923	ev_unref (EV_A); /* child watcher should not keep loop alive */
702	#endif	924	#endif
…		…
713	{	935	{
714	#if EV_MULTIPLICITY	936	#if EV_MULTIPLICITY
715	struct ev_loop *loop = default_loop;	937	struct ev_loop *loop = default_loop;
716	#endif	938	#endif
717		939
		940	#ifndef _WIN32
718	ev_ref (EV_A); /* child watcher */	941	ev_ref (EV_A); /* child watcher */
719	ev_signal_stop (EV_A_ &childev);	942	ev_signal_stop (EV_A_ &childev);
		943	#endif
720		944
721	ev_ref (EV_A); /* signal watcher */	945	ev_ref (EV_A); /* signal watcher */
722	ev_io_stop (EV_A_ &sigev);	946	ev_io_stop (EV_A_ &sigev);
723		947
724	close (sigpipe [0]); sigpipe [0] = 0;	948	close (sigpipe [0]); sigpipe [0] = 0;
…		…
726		950
727	loop_destroy (EV_A);	951	loop_destroy (EV_A);
728	}	952	}
729		953
730	void	954	void
731	ev_default_fork (EV_P)	955	ev_default_fork (void)
732	{	956	{
733	loop_fork (EV_A);	957	#if EV_MULTIPLICITY
		958	struct ev_loop *loop = default_loop;
		959	#endif
734		960
735	ev_io_stop (EV_A_ &sigev);	961	if (method)
736	close (sigpipe [0]);	962	postfork = 1;
737	close (sigpipe [1]);
738	pipe (sigpipe);
739
740	ev_ref (EV_A); /* signal watcher */
741	siginit (EV_A);
742	}	963	}
743		964
744	/*****************************************************************************/	965	/*****************************************************************************/
		966
		967	static int
		968	any_pending (EV_P)
		969	{
		970	int pri;
		971
		972	for (pri = NUMPRI; pri--; )
		973	if (pendingcnt [pri])
		974	return 1;
		975
		976	return 0;
		977	}
745		978
746	static void	979	static void
747	call_pending (EV_P)	980	call_pending (EV_P)
748	{	981	{
749	int pri;	982	int pri;
…		…
754	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	987	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
755		988
756	if (p->w)	989	if (p->w)
757	{	990	{
758	p->w->pending = 0;	991	p->w->pending = 0;
759	p->w->cb (EV_A_ p->w, p->events);	992	EV_CB_INVOKE (p->w, p->events);
760	}	993	}
761	}	994	}
762	}	995	}
763		996
764	static void	997	static void
765	timers_reify (EV_P)	998	timers_reify (EV_P)
766	{	999	{
767	while (timercnt && timers [0]->at <= mn_now)	1000	while (timercnt && ((WT)timers [0])->at <= mn_now)
768	{	1001	{
769	struct ev_timer *w = timers [0];	1002	struct ev_timer *w = timers [0];
		1003
		1004	assert (("inactive timer on timer heap detected", ev_is_active (w)));
770		1005
771	/* first reschedule or stop timer */	1006	/* first reschedule or stop timer */
772	if (w->repeat)	1007	if (w->repeat)
773	{	1008	{
774	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1009	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1010
775	w->at = mn_now + w->repeat;	1011	((WT)w)->at += w->repeat;
		1012	if (((WT)w)->at < mn_now)
		1013	((WT)w)->at = mn_now;
		1014
776	downheap ((WT *)timers, timercnt, 0);	1015	downheap ((WT *)timers, timercnt, 0);
777	}	1016	}
778	else	1017	else
779	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1018	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
780		1019
781	event (EV_A_ (W)w, EV_TIMEOUT);	1020	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
782	}	1021	}
783	}	1022	}
784		1023
		1024	#if EV_PERIODICS
785	static void	1025	static void
786	periodics_reify (EV_P)	1026	periodics_reify (EV_P)
787	{	1027	{
788	while (periodiccnt && periodics [0]->at <= rt_now)	1028	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
789	{	1029	{
790	struct ev_periodic *w = periodics [0];	1030	struct ev_periodic *w = periodics [0];
791		1031
		1032	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1033
792	/* first reschedule or stop timer */	1034	/* first reschedule or stop timer */
793	if (w->interval)	1035	if (w->reschedule_cb)
794	{	1036	{
		1037	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1038	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1039	downheap ((WT *)periodics, periodiccnt, 0);
		1040	}
		1041	else if (w->interval)
		1042	{
795	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1043	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
796	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1044	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
797	downheap ((WT *)periodics, periodiccnt, 0);	1045	downheap ((WT *)periodics, periodiccnt, 0);
798	}	1046	}
799	else	1047	else
800	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1048	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
801		1049
802	event (EV_A_ (W)w, EV_PERIODIC);	1050	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
803	}	1051	}
804	}	1052	}
805		1053
806	static void	1054	static void
807	periodics_reschedule (EV_P)	1055	periodics_reschedule (EV_P)
…		…
811	/* adjust periodics after time jump */	1059	/* adjust periodics after time jump */
812	for (i = 0; i < periodiccnt; ++i)	1060	for (i = 0; i < periodiccnt; ++i)
813	{	1061	{
814	struct ev_periodic *w = periodics [i];	1062	struct ev_periodic *w = periodics [i];
815		1063
		1064	if (w->reschedule_cb)
		1065	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
816	if (w->interval)	1066	else if (w->interval)
817	{
818	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1067	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
819
820	if (fabs (diff) >= 1e-4)
821	{
822	ev_periodic_stop (EV_A_ w);
823	ev_periodic_start (EV_A_ w);
824
825	i = 0; /* restart loop, inefficient, but time jumps should be rare */
826	}
827	}
828	}	1068	}
		1069
		1070	/* now rebuild the heap */
		1071	for (i = periodiccnt >> 1; i--; )
		1072	downheap ((WT *)periodics, periodiccnt, i);
829	}	1073	}
		1074	#endif
830		1075
831	inline int	1076	inline int
832	time_update_monotonic (EV_P)	1077	time_update_monotonic (EV_P)
833	{	1078	{
834	mn_now = get_clock ();	1079	mn_now = get_clock ();
835		1080
836	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1081	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
837	{	1082	{
838	rt_now = rtmn_diff + mn_now;	1083	ev_rt_now = rtmn_diff + mn_now;
839	return 0;	1084	return 0;
840	}	1085	}
841	else	1086	else
842	{	1087	{
843	now_floor = mn_now;	1088	now_floor = mn_now;
844	rt_now = ev_time ();	1089	ev_rt_now = ev_time ();
845	return 1;	1090	return 1;
846	}	1091	}
847	}	1092	}
848		1093
849	static void	1094	static void
…		…
858	{	1103	{
859	ev_tstamp odiff = rtmn_diff;	1104	ev_tstamp odiff = rtmn_diff;
860		1105
861	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1106	for (i = 4; --i; ) /* loop a few times, before making important decisions */
862	{	1107	{
863	rtmn_diff = rt_now - mn_now;	1108	rtmn_diff = ev_rt_now - mn_now;
864		1109
865	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1110	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
866	return; /* all is well */	1111	return; /* all is well */
867		1112
868	rt_now = ev_time ();	1113	ev_rt_now = ev_time ();
869	mn_now = get_clock ();	1114	mn_now = get_clock ();
870	now_floor = mn_now;	1115	now_floor = mn_now;
871	}	1116	}
872		1117
		1118	# if EV_PERIODICS
873	periodics_reschedule (EV_A);	1119	periodics_reschedule (EV_A);
		1120	# endif
874	/* no timer adjustment, as the monotonic clock doesn't jump */	1121	/* no timer adjustment, as the monotonic clock doesn't jump */
875	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1122	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
876	}	1123	}
877	}	1124	}
878	else	1125	else
879	#endif	1126	#endif
880	{	1127	{
881	rt_now = ev_time ();	1128	ev_rt_now = ev_time ();
882		1129
883	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1130	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
884	{	1131	{
		1132	#if EV_PERIODICS
885	periodics_reschedule (EV_A);	1133	periodics_reschedule (EV_A);
		1134	#endif
886		1135
887	/* adjust timers. this is easy, as the offset is the same for all */	1136	/* adjust timers. this is easy, as the offset is the same for all */
888	for (i = 0; i < timercnt; ++i)	1137	for (i = 0; i < timercnt; ++i)
889	timers [i]->at += rt_now - mn_now;	1138	((WT)timers [i])->at += ev_rt_now - mn_now;
890	}	1139	}
891		1140
892	mn_now = rt_now;	1141	mn_now = ev_rt_now;
893	}	1142	}
894	}	1143	}
895		1144
896	void	1145	void
897	ev_ref (EV_P)	1146	ev_ref (EV_P)
…		…
911	ev_loop (EV_P_ int flags)	1160	ev_loop (EV_P_ int flags)
912	{	1161	{
913	double block;	1162	double block;
914	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1163	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
915		1164
916	do	1165	while (activecnt)
917	{	1166	{
918	/* queue check watchers (and execute them) */	1167	/* queue check watchers (and execute them) */
919	if (expect_false (preparecnt))	1168	if (expect_false (preparecnt))
920	{	1169	{
921	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1170	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
922	call_pending (EV_A);	1171	call_pending (EV_A);
923	}	1172	}
924		1173
		1174	/* we might have forked, so reify kernel state if necessary */
		1175	if (expect_false (postfork))
		1176	loop_fork (EV_A);
		1177
925	/* update fd-related kernel structures */	1178	/* update fd-related kernel structures */
926	fd_reify (EV_A);	1179	fd_reify (EV_A);
927		1180
928	/* calculate blocking time */	1181	/* calculate blocking time */
929		1182
930	/* we only need this for !monotonic clockor timers, but as we basically	1183	/* we only need this for !monotonic clock or timers, but as we basically
931	always have timers, we just calculate it always */	1184	always have timers, we just calculate it always */
932	#if EV_USE_MONOTONIC	1185	#if EV_USE_MONOTONIC
933	if (expect_true (have_monotonic))	1186	if (expect_true (have_monotonic))
934	time_update_monotonic (EV_A);	1187	time_update_monotonic (EV_A);
935	else	1188	else
936	#endif	1189	#endif
937	{	1190	{
938	rt_now = ev_time ();	1191	ev_rt_now = ev_time ();
939	mn_now = rt_now;	1192	mn_now = ev_rt_now;
940	}	1193	}
941		1194
942	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1195	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
943	block = 0.;	1196	block = 0.;
944	else	1197	else
945	{	1198	{
946	block = MAX_BLOCKTIME;	1199	block = MAX_BLOCKTIME;
947		1200
948	if (timercnt)	1201	if (timercnt)
949	{	1202	{
950	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1203	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
951	if (block > to) block = to;	1204	if (block > to) block = to;
952	}	1205	}
953		1206
		1207	#if EV_PERIODICS
954	if (periodiccnt)	1208	if (periodiccnt)
955	{	1209	{
956	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1210	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
957	if (block > to) block = to;	1211	if (block > to) block = to;
958	}	1212	}
		1213	#endif
959		1214
960	if (block < 0.) block = 0.;	1215	if (block < 0.) block = 0.;
961	}	1216	}
962		1217
963	method_poll (EV_A_ block);	1218	method_poll (EV_A_ block);
964		1219
965	/* update rt_now, do magic */	1220	/* update ev_rt_now, do magic */
966	time_update (EV_A);	1221	time_update (EV_A);
967		1222
968	/* queue pending timers and reschedule them */	1223	/* queue pending timers and reschedule them */
969	timers_reify (EV_A); /* relative timers called last */	1224	timers_reify (EV_A); /* relative timers called last */
		1225	#if EV_PERIODICS
970	periodics_reify (EV_A); /* absolute timers called first */	1226	periodics_reify (EV_A); /* absolute timers called first */
		1227	#endif
971		1228
972	/* queue idle watchers unless io or timers are pending */	1229	/* queue idle watchers unless io or timers are pending */
973	if (!pendingcnt)	1230	if (idlecnt && !any_pending (EV_A))
974	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1231	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
975		1232
976	/* queue check watchers, to be executed first */	1233	/* queue check watchers, to be executed first */
977	if (checkcnt)	1234	if (checkcnt)
978	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1235	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
979		1236
980	call_pending (EV_A);	1237	call_pending (EV_A);
		1238
		1239	if (loop_done)
		1240	break;
981	}	1241	}
982	while (activecnt && !loop_done);
983		1242
984	if (loop_done != 2)	1243	if (loop_done != 2)
985	loop_done = 0;	1244	loop_done = 0;
986	}	1245	}
987		1246
…		…
1053	return;	1312	return;
1054		1313
1055	assert (("ev_io_start called with negative fd", fd >= 0));	1314	assert (("ev_io_start called with negative fd", fd >= 0));
1056		1315
1057	ev_start (EV_A_ (W)w, 1);	1316	ev_start (EV_A_ (W)w, 1);
1058	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1317	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1059	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1318	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1060		1319
1061	fd_change (EV_A_ fd);	1320	fd_change (EV_A_ fd);
1062	}	1321	}
1063		1322
…		…
1066	{	1325	{
1067	ev_clear_pending (EV_A_ (W)w);	1326	ev_clear_pending (EV_A_ (W)w);
1068	if (!ev_is_active (w))	1327	if (!ev_is_active (w))
1069	return;	1328	return;
1070		1329
		1330	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1331
1071	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1332	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1072	ev_stop (EV_A_ (W)w);	1333	ev_stop (EV_A_ (W)w);
1073		1334
1074	fd_change (EV_A_ w->fd);	1335	fd_change (EV_A_ w->fd);
1075	}	1336	}
…		…
1078	ev_timer_start (EV_P_ struct ev_timer *w)	1339	ev_timer_start (EV_P_ struct ev_timer *w)
1079	{	1340	{
1080	if (ev_is_active (w))	1341	if (ev_is_active (w))
1081	return;	1342	return;
1082		1343
1083	w->at += mn_now;	1344	((WT)w)->at += mn_now;
1084		1345
1085	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1346	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1086		1347
1087	ev_start (EV_A_ (W)w, ++timercnt);	1348	ev_start (EV_A_ (W)w, ++timercnt);
1088	array_needsize (timers, timermax, timercnt, );	1349	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1089	timers [timercnt - 1] = w;	1350	timers [timercnt - 1] = w;
1090	upheap ((WT *)timers, timercnt - 1);	1351	upheap ((WT *)timers, timercnt - 1);
		1352
		1353	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1091	}	1354	}
1092		1355
1093	void	1356	void
1094	ev_timer_stop (EV_P_ struct ev_timer *w)	1357	ev_timer_stop (EV_P_ struct ev_timer *w)
1095	{	1358	{
1096	ev_clear_pending (EV_A_ (W)w);	1359	ev_clear_pending (EV_A_ (W)w);
1097	if (!ev_is_active (w))	1360	if (!ev_is_active (w))
1098	return;	1361	return;
1099		1362
		1363	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1364
1100	if (w->active < timercnt--)	1365	if (((W)w)->active < timercnt--)
1101	{	1366	{
1102	timers [w->active - 1] = timers [timercnt];	1367	timers [((W)w)->active - 1] = timers [timercnt];
1103	downheap ((WT *)timers, timercnt, w->active - 1);	1368	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1104	}	1369	}
1105		1370
1106	w->at = w->repeat;	1371	((WT)w)->at -= mn_now;
1107		1372
1108	ev_stop (EV_A_ (W)w);	1373	ev_stop (EV_A_ (W)w);
1109	}	1374	}
1110		1375
1111	void	1376	void
…		…
1113	{	1378	{
1114	if (ev_is_active (w))	1379	if (ev_is_active (w))
1115	{	1380	{
1116	if (w->repeat)	1381	if (w->repeat)
1117	{	1382	{
1118	w->at = mn_now + w->repeat;	1383	((WT)w)->at = mn_now + w->repeat;
1119	downheap ((WT *)timers, timercnt, w->active - 1);	1384	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1120	}	1385	}
1121	else	1386	else
1122	ev_timer_stop (EV_A_ w);	1387	ev_timer_stop (EV_A_ w);
1123	}	1388	}
1124	else if (w->repeat)	1389	else if (w->repeat)
		1390	{
		1391	w->at = w->repeat;
1125	ev_timer_start (EV_A_ w);	1392	ev_timer_start (EV_A_ w);
		1393	}
1126	}	1394	}
1127		1395
		1396	#if EV_PERIODICS
1128	void	1397	void
1129	ev_periodic_start (EV_P_ struct ev_periodic *w)	1398	ev_periodic_start (EV_P_ struct ev_periodic *w)
1130	{	1399	{
1131	if (ev_is_active (w))	1400	if (ev_is_active (w))
1132	return;	1401	return;
1133		1402
		1403	if (w->reschedule_cb)
		1404	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1405	else if (w->interval)
		1406	{
1134	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1407	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1135
1136	/* this formula differs from the one in periodic_reify because we do not always round up */	1408	/* this formula differs from the one in periodic_reify because we do not always round up */
1137	if (w->interval)
1138	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1409	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1410	}
1139		1411
1140	ev_start (EV_A_ (W)w, ++periodiccnt);	1412	ev_start (EV_A_ (W)w, ++periodiccnt);
1141	array_needsize (periodics, periodicmax, periodiccnt, );	1413	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1142	periodics [periodiccnt - 1] = w;	1414	periodics [periodiccnt - 1] = w;
1143	upheap ((WT *)periodics, periodiccnt - 1);	1415	upheap ((WT *)periodics, periodiccnt - 1);
		1416
		1417	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1144	}	1418	}
1145		1419
1146	void	1420	void
1147	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1421	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1148	{	1422	{
1149	ev_clear_pending (EV_A_ (W)w);	1423	ev_clear_pending (EV_A_ (W)w);
1150	if (!ev_is_active (w))	1424	if (!ev_is_active (w))
1151	return;	1425	return;
1152		1426
		1427	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1428
1153	if (w->active < periodiccnt--)	1429	if (((W)w)->active < periodiccnt--)
1154	{	1430	{
1155	periodics [w->active - 1] = periodics [periodiccnt];	1431	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1156	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1432	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1157	}	1433	}
1158		1434
1159	ev_stop (EV_A_ (W)w);	1435	ev_stop (EV_A_ (W)w);
1160	}	1436	}
1161		1437
1162	void	1438	void
		1439	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1440	{
		1441	/* TODO: use adjustheap and recalculation */
		1442	ev_periodic_stop (EV_A_ w);
		1443	ev_periodic_start (EV_A_ w);
		1444	}
		1445	#endif
		1446
		1447	void
1163	ev_idle_start (EV_P_ struct ev_idle *w)	1448	ev_idle_start (EV_P_ struct ev_idle *w)
1164	{	1449	{
1165	if (ev_is_active (w))	1450	if (ev_is_active (w))
1166	return;	1451	return;
1167		1452
1168	ev_start (EV_A_ (W)w, ++idlecnt);	1453	ev_start (EV_A_ (W)w, ++idlecnt);
1169	array_needsize (idles, idlemax, idlecnt, );	1454	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1170	idles [idlecnt - 1] = w;	1455	idles [idlecnt - 1] = w;
1171	}	1456	}
1172		1457
1173	void	1458	void
1174	ev_idle_stop (EV_P_ struct ev_idle *w)	1459	ev_idle_stop (EV_P_ struct ev_idle *w)
1175	{	1460	{
1176	ev_clear_pending (EV_A_ (W)w);	1461	ev_clear_pending (EV_A_ (W)w);
		1462	if (!ev_is_active (w))
		1463	return;
		1464
		1465	idles [((W)w)->active - 1] = idles [--idlecnt];
		1466	ev_stop (EV_A_ (W)w);
		1467	}
		1468
		1469	void
		1470	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1471	{
1177	if (ev_is_active (w))	1472	if (ev_is_active (w))
1178	return;	1473	return;
1179		1474
1180	idles [w->active - 1] = idles [--idlecnt];	1475	ev_start (EV_A_ (W)w, ++preparecnt);
		1476	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1477	prepares [preparecnt - 1] = w;
		1478	}
		1479
		1480	void
		1481	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1482	{
		1483	ev_clear_pending (EV_A_ (W)w);
		1484	if (!ev_is_active (w))
		1485	return;
		1486
		1487	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1181	ev_stop (EV_A_ (W)w);	1488	ev_stop (EV_A_ (W)w);
1182	}	1489	}
1183		1490
1184	void	1491	void
1185	ev_prepare_start (EV_P_ struct ev_prepare *w)	1492	ev_check_start (EV_P_ struct ev_check *w)
1186	{	1493	{
1187	if (ev_is_active (w))	1494	if (ev_is_active (w))
1188	return;	1495	return;
1189		1496
1190	ev_start (EV_A_ (W)w, ++preparecnt);	1497	ev_start (EV_A_ (W)w, ++checkcnt);
1191	array_needsize (prepares, preparemax, preparecnt, );	1498	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1192	prepares [preparecnt - 1] = w;	1499	checks [checkcnt - 1] = w;
1193	}	1500	}
1194		1501
1195	void	1502	void
1196	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1503	ev_check_stop (EV_P_ struct ev_check *w)
1197	{	1504	{
1198	ev_clear_pending (EV_A_ (W)w);	1505	ev_clear_pending (EV_A_ (W)w);
1199	if (ev_is_active (w))	1506	if (!ev_is_active (w))
1200	return;	1507	return;
1201		1508
1202	prepares [w->active - 1] = prepares [--preparecnt];
1203	ev_stop (EV_A_ (W)w);
1204	}
1205
1206	void
1207	ev_check_start (EV_P_ struct ev_check *w)
1208	{
1209	if (ev_is_active (w))
1210	return;
1211
1212	ev_start (EV_A_ (W)w, ++checkcnt);
1213	array_needsize (checks, checkmax, checkcnt, );
1214	checks [checkcnt - 1] = w;
1215	}
1216
1217	void
1218	ev_check_stop (EV_P_ struct ev_check *w)
1219	{
1220	ev_clear_pending (EV_A_ (W)w);
1221	if (ev_is_active (w))
1222	return;
1223
1224	checks [w->active - 1] = checks [--checkcnt];	1509	checks [((W)w)->active - 1] = checks [--checkcnt];
1225	ev_stop (EV_A_ (W)w);	1510	ev_stop (EV_A_ (W)w);
1226	}	1511	}
1227		1512
1228	#ifndef SA_RESTART	1513	#ifndef SA_RESTART
1229	# define SA_RESTART 0	1514	# define SA_RESTART 0
…		…
1239	return;	1524	return;
1240		1525
1241	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1526	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1242		1527
1243	ev_start (EV_A_ (W)w, 1);	1528	ev_start (EV_A_ (W)w, 1);
1244	array_needsize (signals, signalmax, w->signum, signals_init);	1529	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1245	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1530	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1246		1531
1247	if (!w->next)	1532	if (!((WL)w)->next)
1248	{	1533	{
		1534	#if _WIN32
		1535	signal (w->signum, sighandler);
		1536	#else
1249	struct sigaction sa;	1537	struct sigaction sa;
1250	sa.sa_handler = sighandler;	1538	sa.sa_handler = sighandler;
1251	sigfillset (&sa.sa_mask);	1539	sigfillset (&sa.sa_mask);
1252	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1540	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1253	sigaction (w->signum, &sa, 0);	1541	sigaction (w->signum, &sa, 0);
		1542	#endif
1254	}	1543	}
1255	}	1544	}
1256		1545
1257	void	1546	void
1258	ev_signal_stop (EV_P_ struct ev_signal *w)	1547	ev_signal_stop (EV_P_ struct ev_signal *w)
…		…
1283		1572
1284	void	1573	void
1285	ev_child_stop (EV_P_ struct ev_child *w)	1574	ev_child_stop (EV_P_ struct ev_child *w)
1286	{	1575	{
1287	ev_clear_pending (EV_A_ (W)w);	1576	ev_clear_pending (EV_A_ (W)w);
1288	if (ev_is_active (w))	1577	if (!ev_is_active (w))
1289	return;	1578	return;
1290		1579
1291	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1580	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1292	ev_stop (EV_A_ (W)w);	1581	ev_stop (EV_A_ (W)w);
1293	}	1582	}
…		…
1308	void (cb)(int revents, void arg) = once->cb;	1597	void (cb)(int revents, void arg) = once->cb;
1309	void *arg = once->arg;	1598	void *arg = once->arg;
1310		1599
1311	ev_io_stop (EV_A_ &once->io);	1600	ev_io_stop (EV_A_ &once->io);
1312	ev_timer_stop (EV_A_ &once->to);	1601	ev_timer_stop (EV_A_ &once->to);
1313	free (once);	1602	ev_free (once);
1314		1603
1315	cb (revents, arg);	1604	cb (revents, arg);
1316	}	1605	}
1317		1606
1318	static void	1607	static void
…		…
1328	}	1617	}
1329		1618
1330	void	1619	void
1331	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1620	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1332	{	1621	{
1333	struct ev_once *once = malloc (sizeof (struct ev_once));	1622	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1334		1623
1335	if (!once)	1624	if (!once)
1336	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1625	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1337	else	1626	else
1338	{	1627	{
1339	once->cb = cb;	1628	once->cb = cb;
1340	once->arg = arg;	1629	once->arg = arg;
1341		1630
1342	ev_watcher_init (&once->io, once_cb_io);	1631	ev_init (&once->io, once_cb_io);
1343	if (fd >= 0)	1632	if (fd >= 0)
1344	{	1633	{
1345	ev_io_set (&once->io, fd, events);	1634	ev_io_set (&once->io, fd, events);
1346	ev_io_start (EV_A_ &once->io);	1635	ev_io_start (EV_A_ &once->io);
1347	}	1636	}
1348		1637
1349	ev_watcher_init (&once->to, once_cb_to);	1638	ev_init (&once->to, once_cb_to);
1350	if (timeout >= 0.)	1639	if (timeout >= 0.)
1351	{	1640	{
1352	ev_timer_set (&once->to, timeout, 0.);	1641	ev_timer_set (&once->to, timeout, 0.);
1353	ev_timer_start (EV_A_ &once->to);	1642	ev_timer_start (EV_A_ &once->to);
1354	}	1643	}
1355	}	1644	}
1356	}	1645	}
1357		1646
		1647	#ifdef __cplusplus
		1648	}
		1649	#endif
		1650

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Comparing libev/ev.c (file contents): Revision 1.58 by root, Sun Nov 4 16:52:52 2007 UTC vs. Revision 1.115 by root, Wed Nov 14 04:53:21 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.58 by root, Sun Nov 4 16:52:52 2007 UTC vs.
Revision 1.115 by root, Wed Nov 14 04:53:21 2007 UTC