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

Comparing libev/ev.c (file contents):
Revision 1.7 by root, Wed Oct 31 00:24:16 2007 UTC vs.
Revision 1.37 by root, Thu Nov 1 13:33:12 2007 UTC

…		…
		1	/*
		2	* libev event processing core, watcher management
		3	*
		4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
		5	* All rights reserved.
		6	*
		7	* Redistribution and use in source and binary forms, with or without
		8	* modification, are permitted provided that the following conditions are
		9	* met:
		10	*
		11	* * Redistributions of source code must retain the above copyright
		12	* notice, this list of conditions and the following disclaimer.
		13	*
		14	* * Redistributions in binary form must reproduce the above
		15	* copyright notice, this list of conditions and the following
		16	* disclaimer in the documentation and/or other materials provided
		17	* with the distribution.
		18	*
		19	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
		20	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
		21	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
		22	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
		23	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
		24	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
		25	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
		26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
		27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
		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.
		30	*/
		31	#if EV_USE_CONFIG_H
		32	# include "config.h"
		33	#endif
		34
1	#include <math.h>	35	#include <math.h>
2	#include <stdlib.h>	36	#include <stdlib.h>
3	#include <unistd.h>	37	#include <unistd.h>
4	#include <fcntl.h>	38	#include <fcntl.h>
5	#include <signal.h>	39	#include <signal.h>
		40	#include <stddef.h>
6		41
7	#include <stdio.h>	42	#include <stdio.h>
8		43
9	#include <assert.h>	44	#include <assert.h>
10	#include <errno.h>	45	#include <errno.h>
		46	#include <sys/types.h>
		47	#include <sys/wait.h>
11	#include <sys/time.h>	48	#include <sys/time.h>
12	#include <time.h>	49	#include <time.h>
13		50
		51	#ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 1
		53	#endif
		54
14	#ifdef CLOCK_MONOTONIC	55	#ifndef CLOCK_MONOTONIC
		56	# undef EV_USE_MONOTONIC
15	# define HAVE_MONOTONIC 1	57	# define EV_USE_MONOTONIC 0
16	#endif	58	#endif
17		59
18	#define HAVE_REALTIME 1	60	#ifndef EV_USE_SELECT
19	#define HAVE_EPOLL 1
20	#define HAVE_SELECT 1	61	# define EV_USE_SELECT 1
		62	#endif
		63
		64	#ifndef EV_USE_EPOLL
		65	# define EV_USE_EPOLL 0
		66	#endif
		67
		68	#ifndef CLOCK_REALTIME
		69	# define EV_USE_REALTIME 0
		70	#endif
		71	#ifndef EV_USE_REALTIME
		72	# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */
		73	#endif
21		74
22	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	75	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
23	#define MAX_BLOCKTIME 60.	76	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detetc time jumps) */
		77	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
		78	#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
24		79
25	#include "ev.h"	80	#include "ev.h"
26		81
27	struct ev_watcher {	82	typedef struct ev_watcher *W;
28	EV_WATCHER (ev_watcher);
29	};
30
31	struct ev_watcher_list {	83	typedef struct ev_watcher_list *WL;
32	EV_WATCHER_LIST (ev_watcher_list);	84	typedef struct ev_watcher_time *WT;
33	};
34		85
35	static ev_tstamp now, diff; /* monotonic clock */	86	static ev_tstamp now, diff; /* monotonic clock */
36	ev_tstamp ev_now;	87	ev_tstamp ev_now;
37	int ev_method;	88	int ev_method;
38		89
40		91
41	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	92	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
42	static void (*method_modify)(int fd, int oev, int nev);	93	static void (*method_modify)(int fd, int oev, int nev);
43	static void (*method_poll)(ev_tstamp timeout);	94	static void (*method_poll)(ev_tstamp timeout);
44		95
		96	/*****************************************************************************/
		97
45	ev_tstamp	98	ev_tstamp
46	ev_time (void)	99	ev_time (void)
47	{	100	{
48	#if HAVE_REALTIME	101	#if EV_USE_REALTIME
49	struct timespec ts;	102	struct timespec ts;
50	clock_gettime (CLOCK_REALTIME, &ts);	103	clock_gettime (CLOCK_REALTIME, &ts);
51	return ts.tv_sec + ts.tv_nsec * 1e-9;	104	return ts.tv_sec + ts.tv_nsec * 1e-9;
52	#else	105	#else
53	struct timeval tv;	106	struct timeval tv;
…		…
57	}	110	}
58		111
59	static ev_tstamp	112	static ev_tstamp
60	get_clock (void)	113	get_clock (void)
61	{	114	{
62	#if HAVE_MONOTONIC	115	#if EV_USE_MONOTONIC
63	if (have_monotonic)	116	if (have_monotonic)
64	{	117	{
65	struct timespec ts;	118	struct timespec ts;
66	clock_gettime (CLOCK_MONOTONIC, &ts);	119	clock_gettime (CLOCK_MONOTONIC, &ts);
67	return ts.tv_sec + ts.tv_nsec * 1e-9;	120	return ts.tv_sec + ts.tv_nsec * 1e-9;
…		…
69	#endif	122	#endif
70		123
71	return ev_time ();	124	return ev_time ();
72	}	125	}
73		126
		127	#define array_roundsize(base,n) ((n) \| 4 & ~3)
		128
74	#define array_needsize(base,cur,cnt,init) \	129	#define array_needsize(base,cur,cnt,init) \
75	if ((cnt) > cur) \	130	if ((cnt) > cur) \
76	{ \	131	{ \
77	int newcnt = cur ? cur << 1 : 16; \	132	int newcnt = cur; \
78	fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\	133	do \
		134	{ \
		135	newcnt = array_roundsize (base, newcnt << 1); \
		136	} \
		137	while ((cnt) > newcnt); \
		138	\
79	base = realloc (base, sizeof (base) (newcnt)); \	139	base = realloc (base, sizeof (base) (newcnt)); \
80	init (base + cur, newcnt - cur); \	140	init (base + cur, newcnt - cur); \
81	cur = newcnt; \	141	cur = newcnt; \
82	}	142	}
83		143
		144	/*****************************************************************************/
		145
84	typedef struct	146	typedef struct
85	{	147	{
86	struct ev_io *head;	148	struct ev_io *head;
87	unsigned char wev, rev; /* want, received event set */	149	unsigned char events;
		150	unsigned char reify;
88	} ANFD;	151	} ANFD;
89		152
90	static ANFD *anfds;	153	static ANFD *anfds;
91	static int anfdmax;	154	static int anfdmax;
92		155
93	static int *fdchanges;
94	static int fdchangemax, fdchangecnt;
95
96	static void	156	static void
97	anfds_init (ANFD *base, int count)	157	anfds_init (ANFD *base, int count)
98	{	158	{
99	while (count--)	159	while (count--)
100	{	160	{
101	base->head = 0;	161	base->head = 0;
102	base->wev = base->rev = EV_NONE;	162	base->events = EV_NONE;
		163	base->reify = 0;
		164
103	++base;	165	++base;
104	}	166	}
105	}	167	}
106		168
107	typedef struct	169	typedef struct
108	{	170	{
109	struct ev_watcher *w;	171	W w;
110	int events;	172	int events;
111	} ANPENDING;	173	} ANPENDING;
112		174
113	static ANPENDING *pendings;	175	static ANPENDING *pendings;
114	static int pendingmax, pendingcnt;	176	static int pendingmax, pendingcnt;
115		177
116	static void	178	static void
117	event (struct ev_watcher *w, int events)	179	event (W w, int events)
118	{	180	{
		181	if (w->pending)
		182	{
		183	pendings [w->pending - 1].events \|= events;
		184	return;
		185	}
		186
119	w->pending = ++pendingcnt;	187	w->pending = ++pendingcnt;
120	array_needsize (pendings, pendingmax, pendingcnt, );	188	array_needsize (pendings, pendingmax, pendingcnt, );
121	pendings [pendingcnt - 1].w = w;	189	pendings [pendingcnt - 1].w = w;
122	pendings [pendingcnt - 1].events = events;	190	pendings [pendingcnt - 1].events = events;
123	}	191	}
124		192
125	static void	193	static void
		194	queue_events (W *events, int eventcnt, int type)
		195	{
		196	int i;
		197
		198	for (i = 0; i < eventcnt; ++i)
		199	event (events [i], type);
		200	}
		201
		202	static void
126	fd_event (int fd, int events)	203	fd_event (int fd, int events)
127	{	204	{
128	ANFD *anfd = anfds + fd;	205	ANFD *anfd = anfds + fd;
129	struct ev_io *w;	206	struct ev_io *w;
130		207
131	for (w = anfd->head; w; w = w->next)	208	for (w = anfd->head; w; w = w->next)
132	{	209	{
133	int ev = w->events & events;	210	int ev = w->events & events;
134		211
135	if (ev)	212	if (ev)
136	event ((struct ev_watcher *)w, ev);	213	event ((W)w, ev);
		214	}
		215	}
		216
		217	/*****************************************************************************/
		218
		219	static int *fdchanges;
		220	static int fdchangemax, fdchangecnt;
		221
		222	static void
		223	fd_reify (void)
		224	{
		225	int i;
		226
		227	for (i = 0; i < fdchangecnt; ++i)
137	}	228	{
138	}	229	int fd = fdchanges [i];
		230	ANFD *anfd = anfds + fd;
		231	struct ev_io *w;
139		232
		233	int events = 0;
		234
		235	for (w = anfd->head; w; w = w->next)
		236	events \|= w->events;
		237
		238	anfd->reify = 0;
		239
		240	if (anfd->events != events)
		241	{
		242	method_modify (fd, anfd->events, events);
		243	anfd->events = events;
		244	}
		245	}
		246
		247	fdchangecnt = 0;
		248	}
		249
		250	static void
		251	fd_change (int fd)
		252	{
		253	if (anfds [fd].reify \|\| fdchangecnt < 0)
		254	return;
		255
		256	anfds [fd].reify = 1;
		257
		258	++fdchangecnt;
		259	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
		260	fdchanges [fdchangecnt - 1] = fd;
		261	}
		262
		263	/* called on EBADF to verify fds */
		264	static void
		265	fd_recheck (void)
		266	{
		267	int fd;
		268
		269	for (fd = 0; fd < anfdmax; ++fd)
		270	if (anfds [fd].events)
		271	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
		272	while (anfds [fd].head)
		273	{
		274	ev_io_stop (anfds [fd].head);
		275	event ((W)anfds [fd].head, EV_ERROR \| EV_READ \| EV_WRITE);
		276	}
		277	}
		278
		279	/*****************************************************************************/
		280
140	static struct ev_timer **atimers;	281	static struct ev_timer **timers;
141	static int atimermax, atimercnt;	282	static int timermax, timercnt;
142		283
143	static struct ev_timer **rtimers;	284	static struct ev_periodic **periodics;
144	static int rtimermax, rtimercnt;	285	static int periodicmax, periodiccnt;
145		286
146	static void	287	static void
147	upheap (struct ev_timer **timers, int k)	288	upheap (WT *timers, int k)
148	{	289	{
149	struct ev_timer *w = timers [k];	290	WT w = timers [k];
150		291
151	while (k && timers [k >> 1]->at > w->at)	292	while (k && timers [k >> 1]->at > w->at)
152	{	293	{
153	timers [k] = timers [k >> 1];	294	timers [k] = timers [k >> 1];
154	timers [k]->active = k + 1;	295	timers [k]->active = k + 1;
…		…
159	timers [k]->active = k + 1;	300	timers [k]->active = k + 1;
160		301
161	}	302	}
162		303
163	static void	304	static void
164	downheap (struct ev_timer **timers, int N, int k)	305	downheap (WT *timers, int N, int k)
165	{	306	{
166	struct ev_timer *w = timers [k];	307	WT w = timers [k];
167		308
168	while (k < (N >> 1))	309	while (k < (N >> 1))
169	{	310	{
170	int j = k << 1;	311	int j = k << 1;
171		312
…		…
182		323
183	timers [k] = w;	324	timers [k] = w;
184	timers [k]->active = k + 1;	325	timers [k]->active = k + 1;
185	}	326	}
186		327
		328	/*****************************************************************************/
		329
187	typedef struct	330	typedef struct
188	{	331	{
189	struct ev_signal *head;	332	struct ev_signal *head;
190	sig_atomic_t gotsig;	333	sig_atomic_t volatile gotsig;
191	} ANSIG;	334	} ANSIG;
192		335
193	static ANSIG *signals;	336	static ANSIG *signals;
194	static int signalmax;	337	static int signalmax;
195		338
196	static int sigpipe [2];	339	static int sigpipe [2];
197	static sig_atomic_t gotsig;	340	static sig_atomic_t volatile gotsig;
198	static struct ev_io sigev;	341	static struct ev_io sigev;
199		342
200	static void	343	static void
201	signals_init (ANSIG *base, int count)	344	signals_init (ANSIG *base, int count)
202	{	345	{
203	while (count--)	346	while (count--)
204	{	347	{
205	base->head = 0;	348	base->head = 0;
206	base->gotsig = 0;	349	base->gotsig = 0;
		350
207	++base;	351	++base;
208	}	352	}
209	}	353	}
210		354
211	static void	355	static void
…		…
214	signals [signum - 1].gotsig = 1;	358	signals [signum - 1].gotsig = 1;
215		359
216	if (!gotsig)	360	if (!gotsig)
217	{	361	{
218	gotsig = 1;	362	gotsig = 1;
219	write (sigpipe [1], &gotsig, 1);	363	write (sigpipe [1], &signum, 1);
220	}	364	}
221	}	365	}
222		366
223	static void	367	static void
224	sigcb (struct ev_io *iow, int revents)	368	sigcb (struct ev_io *iow, int revents)
225	{	369	{
226	struct ev_signal *w;	370	struct ev_signal *w;
227	int sig;	371	int sig;
228		372
		373	read (sigpipe [0], &revents, 1);
229	gotsig = 0;	374	gotsig = 0;
230	read (sigpipe [0], &revents, 1);
231		375
232	for (sig = signalmax; sig--; )	376	for (sig = signalmax; sig--; )
233	if (signals [sig].gotsig)	377	if (signals [sig].gotsig)
234	{	378	{
235	signals [sig].gotsig = 0;	379	signals [sig].gotsig = 0;
236		380
237	for (w = signals [sig].head; w; w = w->next)	381	for (w = signals [sig].head; w; w = w->next)
238	event ((struct ev_watcher *)w, EV_SIGNAL);	382	event ((W)w, EV_SIGNAL);
239	}	383	}
240	}	384	}
241		385
242	static void	386	static void
243	siginit (void)	387	siginit (void)
…		…
247		391
248	/* rather than sort out wether we really need nb, set it */	392	/* rather than sort out wether we really need nb, set it */
249	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	393	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
250	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	394	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
251		395
252	evio_set (&sigev, sigpipe [0], EV_READ);	396	ev_io_set (&sigev, sigpipe [0], EV_READ);
253	evio_start (&sigev);	397	ev_io_start (&sigev);
254	}	398	}
255		399
		400	/*****************************************************************************/
		401
		402	static struct ev_idle **idles;
		403	static int idlemax, idlecnt;
		404
		405	static struct ev_prepare **prepares;
		406	static int preparemax, preparecnt;
		407
		408	static struct ev_check **checks;
		409	static int checkmax, checkcnt;
		410
		411	/*****************************************************************************/
		412
		413	static struct ev_child *childs [PID_HASHSIZE];
		414	static struct ev_signal childev;
		415
		416	#ifndef WCONTINUED
		417	# define WCONTINUED 0
		418	#endif
		419
		420	static void
		421	childcb (struct ev_signal *sw, int revents)
		422	{
		423	struct ev_child *w;
		424	int pid, status;
		425
		426	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)
		427	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)
		428	if (w->pid == pid \|\| w->pid == -1)
		429	{
		430	w->status = status;
		431	event ((W)w, EV_CHILD);
		432	}
		433	}
		434
		435	/*****************************************************************************/
		436
256	#if HAVE_EPOLL	437	#if EV_USE_EPOLL
257	# include "ev_epoll.c"	438	# include "ev_epoll.c"
258	#endif	439	#endif
259	#if HAVE_SELECT	440	#if EV_USE_SELECT
260	# include "ev_select.c"	441	# include "ev_select.c"
261	#endif	442	#endif
262		443
		444	int
		445	ev_version_major (void)
		446	{
		447	return EV_VERSION_MAJOR;
		448	}
		449
		450	int
		451	ev_version_minor (void)
		452	{
		453	return EV_VERSION_MINOR;
		454	}
		455
263	int ev_init (int flags)	456	int ev_init (int flags)
264	{	457	{
265	#if HAVE_MONOTONIC
266	{
267	struct timespec ts;
268	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
269	have_monotonic = 1;
270	}
271	#endif
272
273	ev_now = ev_time ();
274	now = get_clock ();
275	diff = ev_now - now;
276
277	if (pipe (sigpipe))
278	return 0;
279
280	ev_method = EVMETHOD_NONE;
281	#if HAVE_EPOLL
282	if (ev_method == EVMETHOD_NONE) epoll_init (flags);
283	#endif
284	#if HAVE_SELECT
285	if (ev_method == EVMETHOD_NONE) select_init (flags);
286	#endif
287
288	if (ev_method)	458	if (!ev_method)
		459	{
		460	#if EV_USE_MONOTONIC
289	{	461	{
		462	struct timespec ts;
		463	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
		464	have_monotonic = 1;
		465	}
		466	#endif
		467
		468	ev_now = ev_time ();
		469	now = get_clock ();
		470	diff = ev_now - now;
		471
		472	if (pipe (sigpipe))
		473	return 0;
		474
		475	ev_method = EVMETHOD_NONE;
		476	#if EV_USE_EPOLL
		477	if (ev_method == EVMETHOD_NONE) epoll_init (flags);
		478	#endif
		479	#if EV_USE_SELECT
		480	if (ev_method == EVMETHOD_NONE) select_init (flags);
		481	#endif
		482
		483	if (ev_method)
		484	{
290	evw_init (&sigev, sigcb, 0);	485	ev_watcher_init (&sigev, sigcb);
291	siginit ();	486	siginit ();
		487
		488	ev_signal_init (&childev, childcb, SIGCHLD);
		489	ev_signal_start (&childev);
		490	}
292	}	491	}
293		492
294	return ev_method;	493	return ev_method;
295	}	494	}
296		495
297	void ev_prefork (void)	496	/*****************************************************************************/
298	{
299	}
300		497
		498	void
		499	ev_fork_prepare (void)
		500	{
		501	/* nop */
		502	}
		503
		504	void
301	void ev_postfork_parent (void)	505	ev_fork_parent (void)
302	{	506	{
		507	/* nop */
303	}	508	}
304		509
		510	void
305	void ev_postfork_child (void)	511	ev_fork_child (void)
306	{	512	{
307	#if HAVE_EPOLL	513	#if EV_USE_EPOLL
308	if (ev_method == EVMETHOD_EPOLL)	514	if (ev_method == EVMETHOD_EPOLL)
309	epoll_postfork_child ();	515	epoll_postfork_child ();
310	#endif	516	#endif
311		517
312	evio_stop (&sigev);	518	ev_io_stop (&sigev);
313	close (sigpipe [0]);	519	close (sigpipe [0]);
314	close (sigpipe [1]);	520	close (sigpipe [1]);
315	pipe (sigpipe);	521	pipe (sigpipe);
316	siginit ();	522	siginit ();
317	}	523	}
318		524
319	static void	525	/*****************************************************************************/
320	fd_reify (void)
321	{
322	int i;
323		526
324	for (i = 0; i < fdchangecnt; ++i)
325	{
326	int fd = fdchanges [i];
327	ANFD *anfd = anfds + fd;
328	struct ev_io *w;
329
330	int wev = 0;
331
332	for (w = anfd->head; w; w = w->next)
333	wev \|= w->events;
334
335	if (anfd->wev != wev)
336	{
337	method_modify (fd, anfd->wev, wev);
338	anfd->wev = wev;
339	}
340	}
341
342	fdchangecnt = 0;
343	}
344
345	static void	527	static void
346	call_pending ()	528	call_pending (void)
347	{	529	{
348	int i;	530	while (pendingcnt)
349
350	for (i = 0; i < pendingcnt; ++i)
351	{	531	{
352	ANPENDING *p = pendings + i;	532	ANPENDING *p = pendings + --pendingcnt;
353		533
354	if (p->w)	534	if (p->w)
355	{	535	{
356	p->w->pending = 0;	536	p->w->pending = 0;
357	p->w->cb (p->w, p->events);	537	p->w->cb (p->w, p->events);
358	}	538	}
359	}	539	}
360
361	pendingcnt = 0;
362	}	540	}
363		541
364	static void	542	static void
365	timers_reify (struct ev_timer **timers, int timercnt, ev_tstamp now)	543	timers_reify (void)
366	{	544	{
367	while (timercnt && timers [0]->at <= now)	545	while (timercnt && timers [0]->at <= now)
368	{	546	{
369	struct ev_timer *w = timers [0];	547	struct ev_timer *w = timers [0];
370		548
371	/* first reschedule or stop timer */	549	/* first reschedule or stop timer */
372	if (w->repeat)	550	if (w->repeat)
373	{	551	{
374	if (w->is_abs)	552	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
375	w->at += floor ((now - w->at) / w->repeat + 1.) * w->repeat;
376	else
377	w->at = now + w->repeat;	553	w->at = now + w->repeat;
378
379	assert (w->at > now);
380
381	downheap (timers, timercnt, 0);	554	downheap ((WT *)timers, timercnt, 0);
382	}	555	}
383	else	556	else
384	{
385	evtimer_stop (w); /* nonrepeating: stop timer */	557	ev_timer_stop (w); /* nonrepeating: stop timer */
386	--timercnt; /* maybe pass by reference instead? */	558
		559	event ((W)w, EV_TIMEOUT);
		560	}
		561	}
		562
		563	static void
		564	periodics_reify (void)
		565	{
		566	while (periodiccnt && periodics [0]->at <= ev_now)
		567	{
		568	struct ev_periodic *w = periodics [0];
		569
		570	/* first reschedule or stop timer */
		571	if (w->interval)
387	}	572	{
		573	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;
		574	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));
		575	downheap ((WT *)periodics, periodiccnt, 0);
		576	}
		577	else
		578	ev_periodic_stop (w); /* nonrepeating: stop timer */
388		579
389	event ((struct ev_watcher *)w, EV_TIMEOUT);	580	event ((W)w, EV_PERIODIC);
390	}	581	}
391	}	582	}
392		583
393	static void	584	static void
394	time_update ()	585	periodics_reschedule (ev_tstamp diff)
395	{	586	{
396	int i;	587	int i;
		588
		589	/* adjust periodics after time jump */
		590	for (i = 0; i < periodiccnt; ++i)
		591	{
		592	struct ev_periodic *w = periodics [i];
		593
		594	if (w->interval)
		595	{
		596	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;
		597
		598	if (fabs (diff) >= 1e-4)
		599	{
		600	ev_periodic_stop (w);
		601	ev_periodic_start (w);
		602
		603	i = 0; /* restart loop, inefficient, but time jumps should be rare */
		604	}
		605	}
		606	}
		607	}
		608
		609	static void
		610	time_update (void)
		611	{
		612	int i;
		613
397	ev_now = ev_time ();	614	ev_now = ev_time ();
398		615
399	if (have_monotonic)	616	if (have_monotonic)
400	{	617	{
401	ev_tstamp odiff = diff;	618	ev_tstamp odiff = diff;
402		619
403	/* detecting time jumps is much more difficult */
404	for (i = 2; --i; ) /* loop a few times, before making important decisions */	620	for (i = 4; --i; ) /* loop a few times, before making important decisions */
405	{	621	{
406	now = get_clock ();	622	now = get_clock ();
407	diff = ev_now - now;	623	diff = ev_now - now;
408		624
409	if (fabs (odiff - diff) < MIN_TIMEJUMP)	625	if (fabs (odiff - diff) < MIN_TIMEJUMP)
410	return; /* all is well */	626	return; /* all is well */
411		627
412	ev_now = ev_time ();	628	ev_now = ev_time ();
413	}	629	}
414		630
415	/* time jump detected, reschedule atimers */	631	periodics_reschedule (diff - odiff);
416	for (i = 0; i < atimercnt; ++i)	632	/* no timer adjustment, as the monotonic clock doesn't jump */
417	{
418	struct ev_timer *w = atimers [i];
419	w->at += ceil ((ev_now - w->at) / w->repeat + 1.) * w->repeat;
420	}
421	}	633	}
422	else	634	else
423	{	635	{
424	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)	636	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)
425	/* time jump detected, adjust rtimers */	637	{
		638	periodics_reschedule (ev_now - now);
		639
		640	/* adjust timers. this is easy, as the offset is the same for all */
426	for (i = 0; i < rtimercnt; ++i)	641	for (i = 0; i < timercnt; ++i)
427	rtimers [i]->at += ev_now - now;	642	timers [i]->at += diff;
		643	}
428		644
429	now = ev_now;	645	now = ev_now;
430	}	646	}
431	}	647	}
432		648
433	int ev_loop_done;	649	int ev_loop_done;
434		650
435	void ev_loop (int flags)	651	void ev_loop (int flags)
436	{	652	{
437	double block;	653	double block;
438	ev_loop_done = flags & EVLOOP_ONESHOT;	654	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
439		655
440	do	656	do
441	{	657	{
		658	/* queue check watchers (and execute them) */
		659	if (preparecnt)
		660	{
		661	queue_events ((W *)prepares, preparecnt, EV_PREPARE);
		662	call_pending ();
		663	}
		664
442	/* update fd-related kernel structures */	665	/* update fd-related kernel structures */
443	fd_reify ();	666	fd_reify ();
444		667
445	/* calculate blocking time */	668	/* calculate blocking time */
		669
		670	/* we only need this for !monotonic clockor timers, but as we basically
		671	always have timers, we just calculate it always */
		672	ev_now = ev_time ();
		673
446	if (flags & EVLOOP_NONBLOCK)	674	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
447	block = 0.;	675	block = 0.;
448	else	676	else
449	{	677	{
450	block = MAX_BLOCKTIME;	678	block = MAX_BLOCKTIME;
451		679
452	if (rtimercnt)	680	if (timercnt)
453	{	681	{
454	ev_tstamp to = rtimers [0]->at - get_clock () + method_fudge;	682	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;
455	if (block > to) block = to;	683	if (block > to) block = to;
456	}	684	}
457		685
458	if (atimercnt)	686	if (periodiccnt)
459	{	687	{
460	ev_tstamp to = atimers [0]->at - ev_time () + method_fudge;	688	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;
461	if (block > to) block = to;	689	if (block > to) block = to;
462	}	690	}
463		691
464	if (block < 0.) block = 0.;	692	if (block < 0.) block = 0.;
465	}	693	}
…		…
467	method_poll (block);	695	method_poll (block);
468		696
469	/* update ev_now, do magic */	697	/* update ev_now, do magic */
470	time_update ();	698	time_update ();
471		699
472	/* put pending timers into pendign queue and reschedule them */	700	/* queue pending timers and reschedule them */
473	/* absolute timers first */	701	timers_reify (); /* relative timers called last */
474	timers_reify (atimers, atimercnt, ev_now);	702	periodics_reify (); /* absolute timers called first */
475	/* relative timers second */	703
476	timers_reify (rtimers, rtimercnt, now);	704	/* queue idle watchers unless io or timers are pending */
		705	if (!pendingcnt)
		706	queue_events ((W *)idles, idlecnt, EV_IDLE);
		707
		708	/* queue check watchers, to be executed first */
		709	if (checkcnt)
		710	queue_events ((W *)checks, checkcnt, EV_CHECK);
477		711
478	call_pending ();	712	call_pending ();
479	}	713	}
480	while (!ev_loop_done);	714	while (!ev_loop_done);
481	}
482		715
		716	if (ev_loop_done != 2)
		717	ev_loop_done = 0;
		718	}
		719
		720	/*****************************************************************************/
		721
483	static void	722	static void
484	wlist_add (struct ev_watcher_list *head, struct ev_watcher_list elem)	723	wlist_add (WL *head, WL elem)
485	{	724	{
486	elem->next = *head;	725	elem->next = *head;
487	*head = elem;	726	*head = elem;
488	}	727	}
489		728
490	static void	729	static void
491	wlist_del (struct ev_watcher_list *head, struct ev_watcher_list elem)	730	wlist_del (WL *head, WL elem)
492	{	731	{
493	while (*head)	732	while (*head)
494	{	733	{
495	if (*head == elem)	734	if (*head == elem)
496	{	735	{
…		…
501	head = &(*head)->next;	740	head = &(*head)->next;
502	}	741	}
503	}	742	}
504		743
505	static void	744	static void
506	ev_start (struct ev_watcher *w, int active)	745	ev_clear_pending (W w)
507	{	746	{
		747	if (w->pending)
		748	{
		749	pendings [w->pending - 1].w = 0;
508	w->pending = 0;	750	w->pending = 0;
		751	}
		752	}
		753
		754	static void
		755	ev_start (W w, int active)
		756	{
509	w->active = active;	757	w->active = active;
510	}	758	}
511		759
512	static void	760	static void
513	ev_stop (struct ev_watcher *w)	761	ev_stop (W w)
514	{	762	{
515	if (w->pending)
516	pendings [w->pending - 1].w = 0;
517
518	w->active = 0;	763	w->active = 0;
519	/* nop */
520	}	764	}
521		765
		766	/*****************************************************************************/
		767
522	void	768	void
523	evio_start (struct ev_io *w)	769	ev_io_start (struct ev_io *w)
524	{	770	{
525	if (ev_is_active (w))
526	return;
527
528	int fd = w->fd;	771	int fd = w->fd;
529		772
530	ev_start ((struct ev_watcher *)w, 1);	773	if (ev_is_active (w))
		774	return;
		775
		776	assert (("ev_io_start called with negative fd", fd >= 0));
		777
		778	ev_start ((W)w, 1);
531	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	779	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
532	wlist_add ((struct ev_watcher_list *)&anfds[fd].head, (struct ev_watcher_list )w);	780	wlist_add ((WL *)&anfds[fd].head, (WL)w);
533		781
534	++fdchangecnt;	782	fd_change (fd);
535	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
536	fdchanges [fdchangecnt - 1] = fd;
537	}	783	}
538		784
539	void	785	void
540	evio_stop (struct ev_io *w)	786	ev_io_stop (struct ev_io *w)
541	{	787	{
		788	ev_clear_pending ((W)w);
542	if (!ev_is_active (w))	789	if (!ev_is_active (w))
543	return;	790	return;
544		791
545	wlist_del ((struct ev_watcher_list *)&anfds[w->fd].head, (struct ev_watcher_list )w);	792	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
546	ev_stop ((struct ev_watcher *)w);	793	ev_stop ((W)w);
547		794
548	++fdchangecnt;	795	fd_change (w->fd);
549	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
550	fdchanges [fdchangecnt - 1] = w->fd;
551	}	796	}
552		797
553	void	798	void
554	evtimer_start (struct ev_timer *w)	799	ev_timer_start (struct ev_timer *w)
555	{	800	{
		801	if (ev_is_active (w))
		802	return;
		803
		804	w->at += now;
		805
		806	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
		807
		808	ev_start ((W)w, ++timercnt);
		809	array_needsize (timers, timermax, timercnt, );
		810	timers [timercnt - 1] = w;
		811	upheap ((WT *)timers, timercnt - 1);
		812	}
		813
		814	void
		815	ev_timer_stop (struct ev_timer *w)
		816	{
		817	ev_clear_pending ((W)w);
556	if (ev_is_active (w))	818	if (!ev_is_active (w))
557	return;	819	return;
558		820
559	if (w->is_abs)	821	if (w->active < timercnt--)
		822	{
		823	timers [w->active - 1] = timers [timercnt];
		824	downheap ((WT *)timers, timercnt, w->active - 1);
560	{	825	}
561	/* this formula differs from the one in timer_reify becuse we do not round up */	826
		827	w->at = w->repeat;
		828
		829	ev_stop ((W)w);
		830	}
		831
		832	void
		833	ev_timer_again (struct ev_timer *w)
		834	{
		835	if (ev_is_active (w))
		836	{
562	if (w->repeat)	837	if (w->repeat)
		838	{
		839	w->at = now + w->repeat;
		840	downheap ((WT *)timers, timercnt, w->active - 1);
		841	}
		842	else
		843	ev_timer_stop (w);
		844	}
		845	else if (w->repeat)
		846	ev_timer_start (w);
		847	}
		848
		849	void
		850	ev_periodic_start (struct ev_periodic *w)
		851	{
		852	if (ev_is_active (w))
		853	return;
		854
		855	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
		856
		857	/* this formula differs from the one in periodic_reify because we do not always round up */
		858	if (w->interval)
563	w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat;	859	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;
564		860
565	ev_start ((struct ev_watcher *)w, ++atimercnt);	861	ev_start ((W)w, ++periodiccnt);
566	array_needsize (atimers, atimermax, atimercnt, );	862	array_needsize (periodics, periodicmax, periodiccnt, );
567	atimers [atimercnt - 1] = w;	863	periodics [periodiccnt - 1] = w;
568	upheap (atimers, atimercnt - 1);	864	upheap ((WT *)periodics, periodiccnt - 1);
569	}
570	else
571	{
572	w->at += now;
573
574	ev_start ((struct ev_watcher *)w, ++rtimercnt);
575	array_needsize (rtimers, rtimermax, rtimercnt, );
576	rtimers [rtimercnt - 1] = w;
577	upheap (rtimers, rtimercnt - 1);
578	}
579
580	}	865	}
581		866
582	void	867	void
583	evtimer_stop (struct ev_timer *w)	868	ev_periodic_stop (struct ev_periodic *w)
584	{	869	{
		870	ev_clear_pending ((W)w);
585	if (!ev_is_active (w))	871	if (!ev_is_active (w))
586	return;	872	return;
587		873
588	if (w->is_abs)
589	{
590	if (w->active < atimercnt--)	874	if (w->active < periodiccnt--)
591	{
592	atimers [w->active - 1] = atimers [atimercnt];
593	downheap (atimers, atimercnt, w->active - 1);
594	}
595	}	875	{
596	else	876	periodics [w->active - 1] = periodics [periodiccnt];
		877	downheap ((WT *)periodics, periodiccnt, w->active - 1);
597	{	878	}
598	if (w->active < rtimercnt--)
599	{
600	rtimers [w->active - 1] = rtimers [rtimercnt];
601	downheap (rtimers, rtimercnt, w->active - 1);
602	}
603	}
604		879
605	ev_stop ((struct ev_watcher *)w);	880	ev_stop ((W)w);
606	}	881	}
607		882
608	void	883	void
609	evsignal_start (struct ev_signal *w)	884	ev_signal_start (struct ev_signal *w)
610	{	885	{
611	if (ev_is_active (w))	886	if (ev_is_active (w))
612	return;	887	return;
613		888
614	ev_start ((struct ev_watcher *)w, 1);	889	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		890
		891	ev_start ((W)w, 1);
615	array_needsize (signals, signalmax, w->signum, signals_init);	892	array_needsize (signals, signalmax, w->signum, signals_init);
616	wlist_add ((struct ev_watcher_list *)&signals [w->signum - 1].head, (struct ev_watcher_list )w);	893	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
617		894
618	if (!w->next)	895	if (!w->next)
619	{	896	{
620	struct sigaction sa;	897	struct sigaction sa;
621	sa.sa_handler = sighandler;	898	sa.sa_handler = sighandler;
…		…
624	sigaction (w->signum, &sa, 0);	901	sigaction (w->signum, &sa, 0);
625	}	902	}
626	}	903	}
627		904
628	void	905	void
629	evsignal_stop (struct ev_signal *w)	906	ev_signal_stop (struct ev_signal *w)
630	{	907	{
		908	ev_clear_pending ((W)w);
631	if (!ev_is_active (w))	909	if (!ev_is_active (w))
632	return;	910	return;
633		911
634	wlist_del ((struct ev_watcher_list *)&signals [w->signum - 1].head, (struct ev_watcher_list )w);	912	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
635	ev_stop ((struct ev_watcher *)w);	913	ev_stop ((W)w);
636		914
637	if (!signals [w->signum - 1].head)	915	if (!signals [w->signum - 1].head)
638	signal (w->signum, SIG_DFL);	916	signal (w->signum, SIG_DFL);
639	}	917	}
640		918
		919	void
		920	ev_idle_start (struct ev_idle *w)
		921	{
		922	if (ev_is_active (w))
		923	return;
		924
		925	ev_start ((W)w, ++idlecnt);
		926	array_needsize (idles, idlemax, idlecnt, );
		927	idles [idlecnt - 1] = w;
		928	}
		929
		930	void
		931	ev_idle_stop (struct ev_idle *w)
		932	{
		933	ev_clear_pending ((W)w);
		934	if (ev_is_active (w))
		935	return;
		936
		937	idles [w->active - 1] = idles [--idlecnt];
		938	ev_stop ((W)w);
		939	}
		940
		941	void
		942	ev_prepare_start (struct ev_prepare *w)
		943	{
		944	if (ev_is_active (w))
		945	return;
		946
		947	ev_start ((W)w, ++preparecnt);
		948	array_needsize (prepares, preparemax, preparecnt, );
		949	prepares [preparecnt - 1] = w;
		950	}
		951
		952	void
		953	ev_prepare_stop (struct ev_prepare *w)
		954	{
		955	ev_clear_pending ((W)w);
		956	if (ev_is_active (w))
		957	return;
		958
		959	prepares [w->active - 1] = prepares [--preparecnt];
		960	ev_stop ((W)w);
		961	}
		962
		963	void
		964	ev_check_start (struct ev_check *w)
		965	{
		966	if (ev_is_active (w))
		967	return;
		968
		969	ev_start ((W)w, ++checkcnt);
		970	array_needsize (checks, checkmax, checkcnt, );
		971	checks [checkcnt - 1] = w;
		972	}
		973
		974	void
		975	ev_check_stop (struct ev_check *w)
		976	{
		977	ev_clear_pending ((W)w);
		978	if (ev_is_active (w))
		979	return;
		980
		981	checks [w->active - 1] = checks [--checkcnt];
		982	ev_stop ((W)w);
		983	}
		984
		985	void
		986	ev_child_start (struct ev_child *w)
		987	{
		988	if (ev_is_active (w))
		989	return;
		990
		991	ev_start ((W)w, 1);
		992	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
		993	}
		994
		995	void
		996	ev_child_stop (struct ev_child *w)
		997	{
		998	ev_clear_pending ((W)w);
		999	if (ev_is_active (w))
		1000	return;
		1001
		1002	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
		1003	ev_stop ((W)w);
		1004	}
		1005
641	/*****************************************************************************/	1006	/*****************************************************************************/
		1007
		1008	struct ev_once
		1009	{
		1010	struct ev_io io;
		1011	struct ev_timer to;
		1012	void (cb)(int revents, void arg);
		1013	void *arg;
		1014	};
		1015
		1016	static void
		1017	once_cb (struct ev_once *once, int revents)
		1018	{
		1019	void (cb)(int revents, void arg) = once->cb;
		1020	void *arg = once->arg;
		1021
		1022	ev_io_stop (&once->io);
		1023	ev_timer_stop (&once->to);
		1024	free (once);
		1025
		1026	cb (revents, arg);
		1027	}
		1028
		1029	static void
		1030	once_cb_io (struct ev_io *w, int revents)
		1031	{
		1032	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
		1033	}
		1034
		1035	static void
		1036	once_cb_to (struct ev_timer *w, int revents)
		1037	{
		1038	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
		1039	}
		1040
		1041	void
		1042	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
		1043	{
		1044	struct ev_once *once = malloc (sizeof (struct ev_once));
		1045
		1046	if (!once)
		1047	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
		1048	else
		1049	{
		1050	once->cb = cb;
		1051	once->arg = arg;
		1052
		1053	ev_watcher_init (&once->io, once_cb_io);
		1054	if (fd >= 0)
		1055	{
		1056	ev_io_set (&once->io, fd, events);
		1057	ev_io_start (&once->io);
		1058	}
		1059
		1060	ev_watcher_init (&once->to, once_cb_to);
		1061	if (timeout >= 0.)
		1062	{
		1063	ev_timer_set (&once->to, timeout, 0.);
		1064	ev_timer_start (&once->to);
		1065	}
		1066	}
		1067	}
		1068
		1069	/*****************************************************************************/
		1070
642	#if 1	1071	#if 0
		1072
		1073	struct ev_io wio;
643		1074
644	static void	1075	static void
645	sin_cb (struct ev_io *w, int revents)	1076	sin_cb (struct ev_io *w, int revents)
646	{	1077	{
647	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);	1078	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
…		…
649		1080
650	static void	1081	static void
651	ocb (struct ev_timer *w, int revents)	1082	ocb (struct ev_timer *w, int revents)
652	{	1083	{
653	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);	1084	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
654	evtimer_stop (w);	1085	ev_timer_stop (w);
655	evtimer_start (w);	1086	ev_timer_start (w);
656	}	1087	}
657		1088
658	static void	1089	static void
659	scb (struct ev_signal *w, int revents)	1090	scb (struct ev_signal *w, int revents)
660	{	1091	{
661	fprintf (stderr, "signal %x,%d\n", revents, w->signum);	1092	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
		1093	ev_io_stop (&wio);
		1094	ev_io_start (&wio);
		1095	}
		1096
		1097	static void
		1098	gcb (struct ev_signal *w, int revents)
		1099	{
		1100	fprintf (stderr, "generic %x\n", revents);
		1101
662	}	1102	}
663		1103
664	int main (void)	1104	int main (void)
665	{	1105	{
666	struct ev_io sin;
667
668	ev_init (0);	1106	ev_init (0);
669		1107
670	evw_init (&sin, sin_cb, 55);
671	evio_set (&sin, 0, EV_READ);	1108	ev_io_init (&wio, sin_cb, 0, EV_READ);
672	evio_start (&sin);	1109	ev_io_start (&wio);
673		1110
674	struct ev_timer t[10000];	1111	struct ev_timer t[10000];
675		1112
676	#if 0	1113	#if 0
677	int i;	1114	int i;
678	for (i = 0; i < 10000; ++i)	1115	for (i = 0; i < 10000; ++i)
679	{	1116	{
680	struct ev_timer *w = t + i;	1117	struct ev_timer *w = t + i;
681	evw_init (w, ocb, i);	1118	ev_watcher_init (w, ocb, i);
682	evtimer_set_abs (w, drand48 (), 0.99775533);	1119	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
683	evtimer_start (w);	1120	ev_timer_start (w);
684	if (drand48 () < 0.5)	1121	if (drand48 () < 0.5)
685	evtimer_stop (w);	1122	ev_timer_stop (w);
686	}	1123	}
687	#endif	1124	#endif
688		1125
689	struct ev_timer t1;	1126	struct ev_timer t1;
690	evw_init (&t1, ocb, 0);	1127	ev_timer_init (&t1, ocb, 5, 10);
691	evtimer_set_abs (&t1, 5, 10);
692	evtimer_start (&t1);	1128	ev_timer_start (&t1);
693		1129
694	struct ev_signal sig;	1130	struct ev_signal sig;
695	evw_init (&sig, scb, 65535);
696	evsignal_set (&sig, SIGQUIT);	1131	ev_signal_init (&sig, scb, SIGQUIT);
697	evsignal_start (&sig);	1132	ev_signal_start (&sig);
		1133
		1134	struct ev_check cw;
		1135	ev_check_init (&cw, gcb);
		1136	ev_check_start (&cw);
		1137
		1138	struct ev_idle iw;
		1139	ev_idle_init (&iw, gcb);
		1140	ev_idle_start (&iw);
698		1141
699	ev_loop (0);	1142	ev_loop (0);
700		1143
701	return 0;	1144	return 0;
702	}	1145	}

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing libev/ev.c (file contents): Revision 1.7 by root, Wed Oct 31 00:24:16 2007 UTC vs. Revision 1.37 by root, Thu Nov 1 13:33:12 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.7 by root, Wed Oct 31 00:24:16 2007 UTC vs.
Revision 1.37 by root, Thu Nov 1 13:33:12 2007 UTC