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

Comparing libev/ev.c (file contents):
Revision 1.26 by root, Wed Oct 31 21:50:15 2007 UTC vs.
Revision 1.55 by root, Sun Nov 4 00:39:24 2007 UTC

…		…
1	/*	1	/*
		2	* libev event processing core, watcher management
		3	*
2	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
3	* All rights reserved.	5	* All rights reserved.
4	*	6	*
5	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions are	8	* modification, are permitted provided that the following conditions are
24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26	* (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
27	* 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.
28	*/	30	*/
		31	#ifndef EV_STANDALONE
		32	# include "config.h"
		33	#endif
29		34
30	#include <math.h>	35	#include <math.h>
31	#include <stdlib.h>	36	#include <stdlib.h>
32	#include <unistd.h>	37	#include <unistd.h>
33	#include <fcntl.h>	38	#include <fcntl.h>
…		…
37	#include <stdio.h>	42	#include <stdio.h>
38		43
39	#include <assert.h>	44	#include <assert.h>
40	#include <errno.h>	45	#include <errno.h>
41	#include <sys/types.h>	46	#include <sys/types.h>
		47	#ifndef WIN32
42	#include <sys/wait.h>	48	# include <sys/wait.h>
		49	#endif
43	#include <sys/time.h>	50	#include <sys/time.h>
44	#include <time.h>	51	#include <time.h>
45		52
		53	/**/
		54
46	#ifndef HAVE_MONOTONIC	55	#ifndef EV_USE_MONOTONIC
		56	# define EV_USE_MONOTONIC 1
		57	#endif
		58
		59	#ifndef EV_USE_SELECT
		60	# define EV_USE_SELECT 1
		61	#endif
		62
		63	#ifndef EV_USEV_POLL
		64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */
		65	#endif
		66
		67	#ifndef EV_USE_EPOLL
		68	# define EV_USE_EPOLL 0
		69	#endif
		70
		71	#ifndef EV_USE_KQUEUE
		72	# define EV_USE_KQUEUE 0
		73	#endif
		74
		75	#ifndef EV_USE_REALTIME
		76	# define EV_USE_REALTIME 1
		77	#endif
		78
		79	/**/
		80
47	# ifdef CLOCK_MONOTONIC	81	#ifndef CLOCK_MONOTONIC
		82	# undef EV_USE_MONOTONIC
48	# define HAVE_MONOTONIC 1	83	# define EV_USE_MONOTONIC 0
49	# endif	84	#endif
50	#endif
51		85
52	#ifndef HAVE_SELECT
53	# define HAVE_SELECT 1
54	#endif
55
56	#ifndef HAVE_EPOLL
57	# define HAVE_EPOLL 0
58	#endif
59
60	#ifndef HAVE_REALTIME	86	#ifndef CLOCK_REALTIME
61	# define HAVE_REALTIME 1 /* posix requirement, but might be slower */	87	# undef EV_USE_REALTIME
		88	# define EV_USE_REALTIME 0
62	#endif	89	#endif
		90
		91	/**/
63		92
64	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
65	#define MAX_BLOCKTIME 60.	94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
66	#define PID_HASHSIZE 16 /* size of pid hahs table, must be power of two */	95	#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 */
67		97
68	#include "ev.h"	98	#include "ev.h"
		99
		100	#if __GNUC__ >= 3
		101	# define expect(expr,value) __builtin_expect ((expr),(value))
		102	# define inline inline
		103	#else
		104	# define expect(expr,value) (expr)
		105	# define inline static
		106	#endif
		107
		108	#define expect_false(expr) expect ((expr) != 0, 0)
		109	#define expect_true(expr) expect ((expr) != 0, 1)
		110
		111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
69		113
70	typedef struct ev_watcher *W;	114	typedef struct ev_watcher *W;
71	typedef struct ev_watcher_list *WL;	115	typedef struct ev_watcher_list *WL;
72	typedef struct ev_watcher_time *WT;	116	typedef struct ev_watcher_time *WT;
73		117
74	static ev_tstamp now, diff; /* monotonic clock */	118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
75	ev_tstamp ev_now;
76	int ev_method;
77
78	static int have_monotonic; /* runtime */
79
80	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
81	static void (*method_modify)(int fd, int oev, int nev);
82	static void (*method_poll)(ev_tstamp timeout);
83		119
84	/*****************************************************************************/	120	/*****************************************************************************/
85		121
86	ev_tstamp	122	typedef struct
		123	{
		124	struct ev_watcher_list *head;
		125	unsigned char events;
		126	unsigned char reify;
		127	} ANFD;
		128
		129	typedef struct
		130	{
		131	W w;
		132	int events;
		133	} ANPENDING;
		134
		135	#if EV_MULTIPLICITY
		136
		137	struct ev_loop
		138	{
		139	# define VAR(name,decl) decl;
		140	# include "ev_vars.h"
		141	};
		142	# undef VAR
		143	# include "ev_wrap.h"
		144
		145	#else
		146
		147	# define VAR(name,decl) static decl;
		148	# include "ev_vars.h"
		149	# undef VAR
		150
		151	#endif
		152
		153	/*****************************************************************************/
		154
		155	inline ev_tstamp
87	ev_time (void)	156	ev_time (void)
88	{	157	{
89	#if HAVE_REALTIME	158	#if EV_USE_REALTIME
90	struct timespec ts;	159	struct timespec ts;
91	clock_gettime (CLOCK_REALTIME, &ts);	160	clock_gettime (CLOCK_REALTIME, &ts);
92	return ts.tv_sec + ts.tv_nsec * 1e-9;	161	return ts.tv_sec + ts.tv_nsec * 1e-9;
93	#else	162	#else
94	struct timeval tv;	163	struct timeval tv;
95	gettimeofday (&tv, 0);	164	gettimeofday (&tv, 0);
96	return tv.tv_sec + tv.tv_usec * 1e-6;	165	return tv.tv_sec + tv.tv_usec * 1e-6;
97	#endif	166	#endif
98	}	167	}
99		168
100	static ev_tstamp	169	inline ev_tstamp
101	get_clock (void)	170	get_clock (void)
102	{	171	{
103	#if HAVE_MONOTONIC	172	#if EV_USE_MONOTONIC
104	if (have_monotonic)	173	if (expect_true (have_monotonic))
105	{	174	{
106	struct timespec ts;	175	struct timespec ts;
107	clock_gettime (CLOCK_MONOTONIC, &ts);	176	clock_gettime (CLOCK_MONOTONIC, &ts);
108	return ts.tv_sec + ts.tv_nsec * 1e-9;	177	return ts.tv_sec + ts.tv_nsec * 1e-9;
109	}	178	}
110	#endif	179	#endif
111		180
112	return ev_time ();	181	return ev_time ();
113	}	182	}
114		183
		184	ev_tstamp
		185	ev_now (EV_P)
		186	{
		187	return rt_now;
		188	}
		189
		190	#define array_roundsize(base,n) ((n) \| 4 & ~3)
		191
115	#define array_needsize(base,cur,cnt,init) \	192	#define array_needsize(base,cur,cnt,init) \
116	if ((cnt) > cur) \	193	if (expect_false ((cnt) > cur)) \
117	{ \	194	{ \
118	int newcnt = cur; \	195	int newcnt = cur; \
119	do \	196	do \
120	{ \	197	{ \
121	newcnt = (newcnt << 1) \| 4 & ~3; \	198	newcnt = array_roundsize (base, newcnt << 1); \
122	} \	199	} \
123	while ((cnt) > newcnt); \	200	while ((cnt) > newcnt); \
124	\	201	\
125	base = realloc (base, sizeof (base) (newcnt)); \	202	base = realloc (base, sizeof (base) (newcnt)); \
126	init (base + cur, newcnt - cur); \	203	init (base + cur, newcnt - cur); \
127	cur = newcnt; \	204	cur = newcnt; \
128	}	205	}
129		206
130	/*****************************************************************************/	207	/*****************************************************************************/
131		208
132	typedef struct
133	{
134	struct ev_io *head;
135	unsigned char wev, rev; /* want, received event set */
136	} ANFD;
137
138	static ANFD *anfds;
139	static int anfdmax;
140
141	static int *fdchanges;
142	static int fdchangemax, fdchangecnt;
143
144	static void	209	static void
145	anfds_init (ANFD *base, int count)	210	anfds_init (ANFD *base, int count)
146	{	211	{
147	while (count--)	212	while (count--)
148	{	213	{
149	base->head = 0;	214	base->head = 0;
150	base->wev = base->rev = EV_NONE;	215	base->events = EV_NONE;
		216	base->reify = 0;
		217
151	++base;	218	++base;
152	}	219	}
153	}	220	}
154		221
155	typedef struct
156	{
157	W w;
158	int events;
159	} ANPENDING;
160
161	static ANPENDING *pendings;
162	static int pendingmax, pendingcnt;
163
164	static void	222	static void
165	event (W w, int events)	223	event (EV_P_ W w, int events)
166	{	224	{
167	if (w->active)	225	if (w->pending)
168	{	226	{
169	w->pending = ++pendingcnt;
170	array_needsize (pendings, pendingmax, pendingcnt, );
171	pendings [pendingcnt - 1].w = w;
172	pendings [pendingcnt - 1].events = events;	227	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
		228	return;
173	}	229	}
174	}
175		230
		231	w->pending = ++pendingcnt [ABSPRI (w)];
		232	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
		233	pendings [ABSPRI (w)][w->pending - 1].w = w;
		234	pendings [ABSPRI (w)][w->pending - 1].events = events;
		235	}
		236
176	static void	237	static void
		238	queue_events (EV_P_ W *events, int eventcnt, int type)
		239	{
		240	int i;
		241
		242	for (i = 0; i < eventcnt; ++i)
		243	event (EV_A_ events [i], type);
		244	}
		245
		246	static void
177	fd_event (int fd, int events)	247	fd_event (EV_P_ int fd, int events)
178	{	248	{
179	ANFD *anfd = anfds + fd;	249	ANFD *anfd = anfds + fd;
180	struct ev_io *w;	250	struct ev_io *w;
181		251
182	for (w = anfd->head; w; w = w->next)	252	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
183	{	253	{
184	int ev = w->events & events;	254	int ev = w->events & events;
185		255
186	if (ev)	256	if (ev)
187	event ((W)w, ev);	257	event (EV_A_ (W)w, ev);
188	}	258	}
189	}	259	}
190		260
		261	/*****************************************************************************/
		262
191	static void	263	static void
192	queue_events (W *events, int eventcnt, int type)	264	fd_reify (EV_P)
193	{	265	{
194	int i;	266	int i;
195		267
196	for (i = 0; i < eventcnt; ++i)	268	for (i = 0; i < fdchangecnt; ++i)
197	event (events [i], type);	269	{
		270	int fd = fdchanges [i];
		271	ANFD *anfd = anfds + fd;
		272	struct ev_io *w;
		273
		274	int events = 0;
		275
		276	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
		277	events \|= w->events;
		278
		279	anfd->reify = 0;
		280
		281	if (anfd->events != events)
		282	{
		283	method_modify (EV_A_ fd, anfd->events, events);
		284	anfd->events = events;
		285	}
		286	}
		287
		288	fdchangecnt = 0;
		289	}
		290
		291	static void
		292	fd_change (EV_P_ int fd)
		293	{
		294	if (anfds [fd].reify \|\| fdchangecnt < 0)
		295	return;
		296
		297	anfds [fd].reify = 1;
		298
		299	++fdchangecnt;
		300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
		301	fdchanges [fdchangecnt - 1] = fd;
		302	}
		303
		304	static void
		305	fd_kill (EV_P_ int fd)
		306	{
		307	struct ev_io *w;
		308
		309	while ((w = (struct ev_io *)anfds [fd].head))
		310	{
		311	ev_io_stop (EV_A_ w);
		312	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
		313	}
198	}	314	}
199		315
200	/* called on EBADF to verify fds */	316	/* called on EBADF to verify fds */
201	static void	317	static void
202	fd_recheck (void)	318	fd_ebadf (EV_P)
203	{	319	{
204	int fd;	320	int fd;
205		321
206	for (fd = 0; fd < anfdmax; ++fd)	322	for (fd = 0; fd < anfdmax; ++fd)
207	if (anfds [fd].wev)	323	if (anfds [fd].events)
208	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
209	while (anfds [fd].head)	325	fd_kill (EV_A_ fd);
		326	}
		327
		328	/* called on ENOMEM in select/poll to kill some fds and retry */
		329	static void
		330	fd_enomem (EV_P)
		331	{
		332	int fd = anfdmax;
		333
		334	while (fd--)
		335	if (anfds [fd].events)
210	{	336	{
211	event ((W)anfds [fd].head, EV_ERROR);	337	close (fd);
212	evio_stop (anfds [fd].head);	338	fd_kill (EV_A_ fd);
		339	return;
213	}	340	}
214	}	341	}
215		342
216	/*****************************************************************************/	343	/*****************************************************************************/
217		344
218	static struct ev_timer **timers;
219	static int timermax, timercnt;
220
221	static struct ev_periodic **periodics;
222	static int periodicmax, periodiccnt;
223
224	static void	345	static void
225	upheap (WT *timers, int k)	346	upheap (WT *heap, int k)
226	{	347	{
227	WT w = timers [k];	348	WT w = heap [k];
228		349
229	while (k && timers [k >> 1]->at > w->at)	350	while (k && heap [k >> 1]->at > w->at)
230	{	351	{
231	timers [k] = timers [k >> 1];	352	heap [k] = heap [k >> 1];
232	timers [k]->active = k + 1;	353	heap [k]->active = k + 1;
233	k >>= 1;	354	k >>= 1;
234	}	355	}
235		356
236	timers [k] = w;	357	heap [k] = w;
237	timers [k]->active = k + 1;	358	heap [k]->active = k + 1;
238		359
239	}	360	}
240		361
241	static void	362	static void
242	downheap (WT *timers, int N, int k)	363	downheap (WT *heap, int N, int k)
243	{	364	{
244	WT w = timers [k];	365	WT w = heap [k];
245		366
246	while (k < (N >> 1))	367	while (k < (N >> 1))
247	{	368	{
248	int j = k << 1;	369	int j = k << 1;
249		370
250	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	371	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
251	++j;	372	++j;
252		373
253	if (w->at <= timers [j]->at)	374	if (w->at <= heap [j]->at)
254	break;	375	break;
255		376
256	timers [k] = timers [j];	377	heap [k] = heap [j];
257	timers [k]->active = k + 1;	378	heap [k]->active = k + 1;
258	k = j;	379	k = j;
259	}	380	}
260		381
261	timers [k] = w;	382	heap [k] = w;
262	timers [k]->active = k + 1;	383	heap [k]->active = k + 1;
263	}	384	}
264		385
265	/*****************************************************************************/	386	/*****************************************************************************/
266		387
267	typedef struct	388	typedef struct
268	{	389	{
269	struct ev_signal *head;	390	struct ev_watcher_list *head;
270	sig_atomic_t gotsig;	391	sig_atomic_t volatile gotsig;
271	} ANSIG;	392	} ANSIG;
272		393
273	static ANSIG *signals;	394	static ANSIG *signals;
274	static int signalmax;	395	static int signalmax;
275		396
276	static int sigpipe [2];	397	static int sigpipe [2];
277	static sig_atomic_t gotsig;	398	static sig_atomic_t volatile gotsig;
278	static struct ev_io sigev;
279		399
280	static void	400	static void
281	signals_init (ANSIG *base, int count)	401	signals_init (ANSIG *base, int count)
282	{	402	{
283	while (count--)	403	while (count--)
284	{	404	{
285	base->head = 0;	405	base->head = 0;
286	base->gotsig = 0;	406	base->gotsig = 0;
		407
287	++base;	408	++base;
288	}	409	}
289	}	410	}
290		411
291	static void	412	static void
…		…
293	{	414	{
294	signals [signum - 1].gotsig = 1;	415	signals [signum - 1].gotsig = 1;
295		416
296	if (!gotsig)	417	if (!gotsig)
297	{	418	{
		419	int old_errno = errno;
298	gotsig = 1;	420	gotsig = 1;
299	write (sigpipe [1], &gotsig, 1);	421	write (sigpipe [1], &signum, 1);
		422	errno = old_errno;
300	}	423	}
301	}	424	}
302		425
303	static void	426	static void
304	sigcb (struct ev_io *iow, int revents)	427	sigcb (EV_P_ struct ev_io *iow, int revents)
305	{	428	{
306	struct ev_signal *w;	429	struct ev_watcher_list *w;
307	int sig;	430	int signum;
308		431
		432	read (sigpipe [0], &revents, 1);
309	gotsig = 0;	433	gotsig = 0;
310	read (sigpipe [0], &revents, 1);
311		434
312	for (sig = signalmax; sig--; )	435	for (signum = signalmax; signum--; )
313	if (signals [sig].gotsig)	436	if (signals [signum].gotsig)
314	{	437	{
315	signals [sig].gotsig = 0;	438	signals [signum].gotsig = 0;
316		439
317	for (w = signals [sig].head; w; w = w->next)	440	for (w = signals [signum].head; w; w = w->next)
318	event ((W)w, EV_SIGNAL);	441	event (EV_A_ (W)w, EV_SIGNAL);
319	}	442	}
320	}	443	}
321		444
322	static void	445	static void
323	siginit (void)	446	siginit (EV_P)
324	{	447	{
		448	#ifndef WIN32
325	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	449	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
326	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	450	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
327		451
328	/* rather than sort out wether we really need nb, set it */	452	/* rather than sort out wether we really need nb, set it */
329	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	453	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
330	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	454	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		455	#endif
331		456
332	evio_set (&sigev, sigpipe [0], EV_READ);	457	ev_io_set (&sigev, sigpipe [0], EV_READ);
333	evio_start (&sigev);	458	ev_io_start (EV_A_ &sigev);
		459	ev_unref (EV_A); /* child watcher should not keep loop alive */
334	}	460	}
335		461
336	/*****************************************************************************/	462	/*****************************************************************************/
337		463
338	static struct ev_idle **idles;	464	#ifndef WIN32
339	static int idlemax, idlecnt;
340
341	static struct ev_prepare **prepares;
342	static int preparemax, preparecnt;
343
344	static struct ev_check **checks;
345	static int checkmax, checkcnt;
346
347	/*****************************************************************************/
348
349	static struct ev_child *childs [PID_HASHSIZE];
350	static struct ev_signal childev;
351		465
352	#ifndef WCONTINUED	466	#ifndef WCONTINUED
353	# define WCONTINUED 0	467	# define WCONTINUED 0
354	#endif	468	#endif
355		469
356	static void	470	static void
357	childcb (struct ev_signal *sw, int revents)	471	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
358	{	472	{
359	struct ev_child *w;	473	struct ev_child *w;
		474
		475	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		476	if (w->pid == pid \|\| !w->pid)
		477	{
		478	w->priority = sw->priority; /* need to do it now */
		479	w->rpid = pid;
		480	w->rstatus = status;
		481	event (EV_A_ (W)w, EV_CHILD);
		482	}
		483	}
		484
		485	static void
		486	childcb (EV_P_ struct ev_signal *sw, int revents)
		487	{
360	int pid, status;	488	int pid, status;
361		489
362	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	490	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
363	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	491	{
364	if (w->pid == pid \|\| w->pid == -1)	492	/* make sure we are called again until all childs have been reaped */
365	{	493	event (EV_A_ (W)sw, EV_SIGNAL);
366	w->status = status;	494
367	event ((W)w, EV_CHILD);	495	child_reap (EV_A_ sw, pid, pid, status);
368	}	496	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		497	}
369	}	498	}
		499
		500	#endif
370		501
371	/*****************************************************************************/	502	/*****************************************************************************/
372		503
		504	#if EV_USE_KQUEUE
		505	# include "ev_kqueue.c"
		506	#endif
373	#if HAVE_EPOLL	507	#if EV_USE_EPOLL
374	# include "ev_epoll.c"	508	# include "ev_epoll.c"
375	#endif	509	#endif
		510	#if EV_USEV_POLL
		511	# include "ev_poll.c"
		512	#endif
376	#if HAVE_SELECT	513	#if EV_USE_SELECT
377	# include "ev_select.c"	514	# include "ev_select.c"
378	#endif	515	#endif
379		516
380	int	517	int
381	ev_version_major (void)	518	ev_version_major (void)
…		…
387	ev_version_minor (void)	524	ev_version_minor (void)
388	{	525	{
389	return EV_VERSION_MINOR;	526	return EV_VERSION_MINOR;
390	}	527	}
391		528
392	int ev_init (int flags)	529	/* return true if we are running with elevated privileges and should ignore env variables */
		530	static int
		531	enable_secure (void)
393	{	532	{
		533	#ifdef WIN32
		534	return 0;
		535	#else
		536	return getuid () != geteuid ()
		537	\|\| getgid () != getegid ();
		538	#endif
		539	}
		540
		541	int
		542	ev_method (EV_P)
		543	{
		544	return method;
		545	}
		546
		547	inline int
		548	loop_init (EV_P_ int methods)
		549	{
394	if (!ev_method)	550	if (!method)
395	{	551	{
396	#if HAVE_MONOTONIC	552	#if EV_USE_MONOTONIC
397	{	553	{
398	struct timespec ts;	554	struct timespec ts;
399	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	555	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
400	have_monotonic = 1;	556	have_monotonic = 1;
401	}	557	}
402	#endif	558	#endif
403		559
404	ev_now = ev_time ();	560	rt_now = ev_time ();
405	now = get_clock ();	561	mn_now = get_clock ();
		562	now_floor = mn_now;
406	diff = ev_now - now;	563	rtmn_diff = rt_now - mn_now;
407		564
408	if (pipe (sigpipe))	565	if (pipe (sigpipe))
409	return 0;	566	return 0;
410		567
		568	if (methods == EVMETHOD_AUTO)
		569	if (!enable_secure () && getenv ("LIBmethodS"))
		570	methods = atoi (getenv ("LIBmethodS"));
		571	else
411	ev_method = EVMETHOD_NONE;	572	methods = EVMETHOD_ANY;
		573
		574	method = 0;
		575	#if EV_USE_KQUEUE
		576	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		577	#endif
412	#if HAVE_EPOLL	578	#if EV_USE_EPOLL
413	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	579	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
414	#endif	580	#endif
		581	#if EV_USEV_POLL
		582	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
		583	#endif
415	#if HAVE_SELECT	584	#if EV_USE_SELECT
416	if (ev_method == EVMETHOD_NONE) select_init (flags);	585	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
417	#endif	586	#endif
418		587
419	if (ev_method)	588	if (method)
420	{	589	{
421	evw_init (&sigev, sigcb);	590	ev_watcher_init (&sigev, sigcb);
		591	ev_set_priority (&sigev, EV_MAXPRI);
422	siginit ();	592	siginit (EV_A);
423		593
		594	#ifndef WIN32
424	evsignal_init (&childev, childcb, SIGCHLD);	595	ev_signal_init (&childev, childcb, SIGCHLD);
		596	ev_set_priority (&childev, EV_MAXPRI);
425	evsignal_start (&childev);	597	ev_signal_start (EV_A_ &childev);
		598	ev_unref (EV_A); /* child watcher should not keep loop alive */
		599	#endif
426	}	600	}
427	}	601	}
428		602
429	return ev_method;	603	return method;
430	}	604	}
		605
		606	#if EV_MULTIPLICITY
		607
		608	struct ev_loop *
		609	ev_loop_new (int methods)
		610	{
		611	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));
		612
		613	if (loop_init (EV_A_ methods))
		614	return loop;
		615
		616	ev_loop_delete (loop);
		617
		618	return 0;
		619	}
		620
		621	void
		622	ev_loop_delete (EV_P)
		623	{
		624	/TODO/
		625	free (loop);
		626	}
		627
		628	#else
		629
		630	int
		631	ev_init (int methods)
		632	{
		633	return loop_init (methods);
		634	}
		635
		636	#endif
431		637
432	/*****************************************************************************/	638	/*****************************************************************************/
433		639
434	void	640	void
435	ev_prefork (void)	641	ev_fork_prepare (void)
436	{	642	{
437	/* nop */	643	/* nop */
438	}	644	}
439		645
440	void	646	void
441	ev_postfork_parent (void)	647	ev_fork_parent (void)
442	{	648	{
443	/* nop */	649	/* nop */
444	}	650	}
445		651
446	void	652	void
447	ev_postfork_child (void)	653	ev_fork_child (void)
448	{	654	{
		655	/TODO/
		656	#if !EV_MULTIPLICITY
449	#if HAVE_EPOLL	657	#if EV_USE_EPOLL
450	if (ev_method == EVMETHOD_EPOLL)	658	if (method == EVMETHOD_EPOLL)
451	epoll_postfork_child ();	659	epoll_postfork_child (EV_A);
452	#endif	660	#endif
453		661
454	evio_stop (&sigev);	662	ev_io_stop (EV_A_ &sigev);
455	close (sigpipe [0]);	663	close (sigpipe [0]);
456	close (sigpipe [1]);	664	close (sigpipe [1]);
457	pipe (sigpipe);	665	pipe (sigpipe);
458	siginit ();	666	siginit (EV_A);
		667	#endif
459	}	668	}
460		669
461	/*****************************************************************************/	670	/*****************************************************************************/
462		671
463	static void	672	static void
464	fd_reify (void)	673	call_pending (EV_P)
465	{	674	{
466	int i;	675	int pri;
467		676
468	for (i = 0; i < fdchangecnt; ++i)	677	for (pri = NUMPRI; pri--; )
469	{	678	while (pendingcnt [pri])
470	int fd = fdchanges [i];
471	ANFD *anfd = anfds + fd;
472	struct ev_io *w;
473
474	int wev = 0;
475
476	for (w = anfd->head; w; w = w->next)
477	wev \|= w->events;
478
479	if (anfd->wev != wev)
480	{	679	{
481	method_modify (fd, anfd->wev, wev);
482	anfd->wev = wev;
483	}
484	}
485
486	fdchangecnt = 0;
487	}
488
489	static void
490	call_pending (void)
491	{
492	while (pendingcnt)
493	{
494	ANPENDING *p = pendings + --pendingcnt;	680	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
495		681
496	if (p->w)	682	if (p->w)
497	{	683	{
498	p->w->pending = 0;	684	p->w->pending = 0;
499	p->w->cb (p->w, p->events);	685	p->w->cb (EV_A_ p->w, p->events);
500	}	686	}
501	}	687	}
502	}	688	}
503		689
504	static void	690	static void
505	timers_reify (void)	691	timers_reify (EV_P)
506	{	692	{
507	while (timercnt && timers [0]->at <= now)	693	while (timercnt && timers [0]->at <= mn_now)
508	{	694	{
509	struct ev_timer *w = timers [0];	695	struct ev_timer *w = timers [0];
510
511	event ((W)w, EV_TIMEOUT);
512		696
513	/* first reschedule or stop timer */	697	/* first reschedule or stop timer */
514	if (w->repeat)	698	if (w->repeat)
515	{	699	{
		700	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
516	w->at = now + w->repeat;	701	w->at = mn_now + w->repeat;
517	assert (("timer timeout in the past, negative repeat?", w->at > now));
518	downheap ((WT *)timers, timercnt, 0);	702	downheap ((WT *)timers, timercnt, 0);
519	}	703	}
520	else	704	else
521	evtimer_stop (w); /* nonrepeating: stop timer */	705	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
522	}
523	}
524		706
		707	event (EV_A_ (W)w, EV_TIMEOUT);
		708	}
		709	}
		710
525	static void	711	static void
526	periodics_reify (void)	712	periodics_reify (EV_P)
527	{	713	{
528	while (periodiccnt && periodics [0]->at <= ev_now)	714	while (periodiccnt && periodics [0]->at <= rt_now)
529	{	715	{
530	struct ev_periodic *w = periodics [0];	716	struct ev_periodic *w = periodics [0];
531		717
532	/* first reschedule or stop timer */	718	/* first reschedule or stop timer */
533	if (w->interval)	719	if (w->interval)
534	{	720	{
535	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	721	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;
536	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	722	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
537	downheap ((WT *)periodics, periodiccnt, 0);	723	downheap ((WT *)periodics, periodiccnt, 0);
538	}	724	}
539	else	725	else
540	evperiodic_stop (w); /* nonrepeating: stop timer */	726	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
541		727
542	event ((W)w, EV_TIMEOUT);	728	event (EV_A_ (W)w, EV_PERIODIC);
543	}	729	}
544	}	730	}
545		731
546	static void	732	static void
547	periodics_reschedule (ev_tstamp diff)	733	periodics_reschedule (EV_P)
548	{	734	{
549	int i;	735	int i;
550		736
551	/* adjust periodics after time jump */	737	/* adjust periodics after time jump */
552	for (i = 0; i < periodiccnt; ++i)	738	for (i = 0; i < periodiccnt; ++i)
553	{	739	{
554	struct ev_periodic *w = periodics [i];	740	struct ev_periodic *w = periodics [i];
555		741
556	if (w->interval)	742	if (w->interval)
557	{	743	{
558	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	744	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
559		745
560	if (fabs (diff) >= 1e-4)	746	if (fabs (diff) >= 1e-4)
561	{	747	{
562	evperiodic_stop (w);	748	ev_periodic_stop (EV_A_ w);
563	evperiodic_start (w);	749	ev_periodic_start (EV_A_ w);
564		750
565	i = 0; /* restart loop, inefficient, but time jumps should be rare */	751	i = 0; /* restart loop, inefficient, but time jumps should be rare */
566	}	752	}
567	}	753	}
568	}	754	}
569	}	755	}
570		756
		757	inline int
		758	time_update_monotonic (EV_P)
		759	{
		760	mn_now = get_clock ();
		761
		762	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		763	{
		764	rt_now = rtmn_diff + mn_now;
		765	return 0;
		766	}
		767	else
		768	{
		769	now_floor = mn_now;
		770	rt_now = ev_time ();
		771	return 1;
		772	}
		773	}
		774
571	static void	775	static void
572	time_update (void)	776	time_update (EV_P)
573	{	777	{
574	int i;	778	int i;
575		779
576	ev_now = ev_time ();	780	#if EV_USE_MONOTONIC
577
578	if (have_monotonic)	781	if (expect_true (have_monotonic))
579	{	782	{
580	ev_tstamp odiff = diff;	783	if (time_update_monotonic (EV_A))
581
582	for (i = 4; --i; ) /* loop a few times, before making important decisions */
583	{	784	{
584	now = get_clock ();	785	ev_tstamp odiff = rtmn_diff;
		786
		787	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		788	{
585	diff = ev_now - now;	789	rtmn_diff = rt_now - mn_now;
586		790
587	if (fabs (odiff - diff) < MIN_TIMEJUMP)	791	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
588	return; /* all is well */	792	return; /* all is well */
589		793
590	ev_now = ev_time ();	794	rt_now = ev_time ();
		795	mn_now = get_clock ();
		796	now_floor = mn_now;
		797	}
		798
		799	periodics_reschedule (EV_A);
		800	/* no timer adjustment, as the monotonic clock doesn't jump */
		801	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
591	}	802	}
592
593	periodics_reschedule (diff - odiff);
594	/* no timer adjustment, as the monotonic clock doesn't jump */
595	}	803	}
596	else	804	else
		805	#endif
597	{	806	{
598	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)	807	rt_now = ev_time ();
		808
		809	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
599	{	810	{
600	periodics_reschedule (ev_now - now);	811	periodics_reschedule (EV_A);
601		812
602	/* adjust timers. this is easy, as the offset is the same for all */	813	/* adjust timers. this is easy, as the offset is the same for all */
603	for (i = 0; i < timercnt; ++i)	814	for (i = 0; i < timercnt; ++i)
604	timers [i]->at += diff;	815	timers [i]->at += rt_now - mn_now;
605	}	816	}
606		817
607	now = ev_now;	818	mn_now = rt_now;
608	}	819	}
609	}	820	}
610		821
611	int ev_loop_done;	822	void
		823	ev_ref (EV_P)
		824	{
		825	++activecnt;
		826	}
612		827
		828	void
		829	ev_unref (EV_P)
		830	{
		831	--activecnt;
		832	}
		833
		834	static int loop_done;
		835
		836	void
613	void ev_loop (int flags)	837	ev_loop (EV_P_ int flags)
614	{	838	{
615	double block;	839	double block;
616	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	840	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
617		841
618	do	842	do
619	{	843	{
620	/* queue check watchers (and execute them) */	844	/* queue check watchers (and execute them) */
621	if (preparecnt)	845	if (expect_false (preparecnt))
622	{	846	{
623	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	847	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
624	call_pending ();	848	call_pending (EV_A);
625	}	849	}
626		850
627	/* update fd-related kernel structures */	851	/* update fd-related kernel structures */
628	fd_reify ();	852	fd_reify (EV_A);
629		853
630	/* calculate blocking time */	854	/* calculate blocking time */
631		855
632	/* we only need this for !monotonic clockor timers, but as we basically	856	/* we only need this for !monotonic clockor timers, but as we basically
633	always have timers, we just calculate it always */	857	always have timers, we just calculate it always */
		858	#if EV_USE_MONOTONIC
		859	if (expect_true (have_monotonic))
		860	time_update_monotonic (EV_A);
		861	else
		862	#endif
		863	{
634	ev_now = ev_time ();	864	rt_now = ev_time ();
		865	mn_now = rt_now;
		866	}
635		867
636	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	868	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
637	block = 0.;	869	block = 0.;
638	else	870	else
639	{	871	{
640	block = MAX_BLOCKTIME;	872	block = MAX_BLOCKTIME;
641		873
642	if (timercnt)	874	if (timercnt)
643	{	875	{
644	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	876	ev_tstamp to = timers [0]->at - mn_now + method_fudge;
645	if (block > to) block = to;	877	if (block > to) block = to;
646	}	878	}
647		879
648	if (periodiccnt)	880	if (periodiccnt)
649	{	881	{
650	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	882	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
651	if (block > to) block = to;	883	if (block > to) block = to;
652	}	884	}
653		885
654	if (block < 0.) block = 0.;	886	if (block < 0.) block = 0.;
655	}	887	}
656		888
657	method_poll (block);	889	method_poll (EV_A_ block);
658		890
659	/* update ev_now, do magic */	891	/* update rt_now, do magic */
660	time_update ();	892	time_update (EV_A);
661		893
662	/* queue pending timers and reschedule them */	894	/* queue pending timers and reschedule them */
663	timers_reify (); /* relative timers called last */	895	timers_reify (EV_A); /* relative timers called last */
664	periodics_reify (); /* absolute timers called first */	896	periodics_reify (EV_A); /* absolute timers called first */
665		897
666	/* queue idle watchers unless io or timers are pending */	898	/* queue idle watchers unless io or timers are pending */
667	if (!pendingcnt)	899	if (!pendingcnt)
668	queue_events ((W *)idles, idlecnt, EV_IDLE);	900	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
669		901
670	/* queue check watchers, to be executed first */	902	/* queue check watchers, to be executed first */
671	if (checkcnt)	903	if (checkcnt)
672	queue_events ((W *)checks, checkcnt, EV_CHECK);	904	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
673		905
674	call_pending ();	906	call_pending (EV_A);
675	}	907	}
676	while (!ev_loop_done);	908	while (activecnt && !loop_done);
677		909
678	if (ev_loop_done != 2)	910	if (loop_done != 2)
679	ev_loop_done = 0;	911	loop_done = 0;
		912	}
		913
		914	void
		915	ev_unloop (EV_P_ int how)
		916	{
		917	loop_done = how;
680	}	918	}
681		919
682	/*****************************************************************************/	920	/*****************************************************************************/
683		921
684	static void	922	inline void
685	wlist_add (WL *head, WL elem)	923	wlist_add (WL *head, WL elem)
686	{	924	{
687	elem->next = *head;	925	elem->next = *head;
688	*head = elem;	926	*head = elem;
689	}	927	}
690		928
691	static void	929	inline void
692	wlist_del (WL *head, WL elem)	930	wlist_del (WL *head, WL elem)
693	{	931	{
694	while (*head)	932	while (*head)
695	{	933	{
696	if (*head == elem)	934	if (*head == elem)
…		…
701		939
702	head = &(*head)->next;	940	head = &(*head)->next;
703	}	941	}
704	}	942	}
705		943
706	static void	944	inline void
707	ev_clear (W w)	945	ev_clear_pending (EV_P_ W w)
708	{	946	{
709	if (w->pending)	947	if (w->pending)
710	{	948	{
711	pendings [w->pending - 1].w = 0;	949	pendings [ABSPRI (w)][w->pending - 1].w = 0;
712	w->pending = 0;	950	w->pending = 0;
713	}	951	}
714	}	952	}
715		953
716	static void	954	inline void
717	ev_start (W w, int active)	955	ev_start (EV_P_ W w, int active)
718	{	956	{
		957	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		958	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		959
719	w->active = active;	960	w->active = active;
		961	ev_ref (EV_A);
720	}	962	}
721		963
722	static void	964	inline void
723	ev_stop (W w)	965	ev_stop (EV_P_ W w)
724	{	966	{
		967	ev_unref (EV_A);
725	w->active = 0;	968	w->active = 0;
726	}	969	}
727		970
728	/*****************************************************************************/	971	/*****************************************************************************/
729		972
730	void	973	void
731	evio_start (struct ev_io *w)	974	ev_io_start (EV_P_ struct ev_io *w)
732	{	975	{
		976	int fd = w->fd;
		977
733	if (ev_is_active (w))	978	if (ev_is_active (w))
734	return;	979	return;
735		980
736	int fd = w->fd;	981	assert (("ev_io_start called with negative fd", fd >= 0));
737		982
738	ev_start ((W)w, 1);	983	ev_start (EV_A_ (W)w, 1);
739	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	984	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
740	wlist_add ((WL *)&anfds[fd].head, (WL)w);	985	wlist_add ((WL *)&anfds[fd].head, (WL)w);
741		986
742	++fdchangecnt;	987	fd_change (EV_A_ fd);
743	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
744	fdchanges [fdchangecnt - 1] = fd;
745
746	if (w->fd == 9)
747	printf ("start %p:%x\n", w, w->events);//D
748	}	988	}
749		989
750	void	990	void
751	evio_stop (struct ev_io *w)	991	ev_io_stop (EV_P_ struct ev_io *w)
752	{	992	{
753	if (w->fd == 9)	993	ev_clear_pending (EV_A_ (W)w);
754	printf ("stop %p:%x\n", w, w->events);//D
755	ev_clear ((W)w);
756	if (!ev_is_active (w))	994	if (!ev_is_active (w))
757	return;	995	return;
758		996
759	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	997	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
760	ev_stop ((W)w);	998	ev_stop (EV_A_ (W)w);
761		999
762	++fdchangecnt;	1000	fd_change (EV_A_ w->fd);
763	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
764	fdchanges [fdchangecnt - 1] = w->fd;
765	}	1001	}
766		1002
767	void	1003	void
768	evtimer_start (struct ev_timer *w)	1004	ev_timer_start (EV_P_ struct ev_timer *w)
769	{	1005	{
770	if (ev_is_active (w))	1006	if (ev_is_active (w))
771	return;	1007	return;
772		1008
773	w->at += now;	1009	w->at += mn_now;
774		1010
775	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1011	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
776		1012
777	ev_start ((W)w, ++timercnt);	1013	ev_start (EV_A_ (W)w, ++timercnt);
778	array_needsize (timers, timermax, timercnt, );	1014	array_needsize (timers, timermax, timercnt, );
779	timers [timercnt - 1] = w;	1015	timers [timercnt - 1] = w;
780	upheap ((WT *)timers, timercnt - 1);	1016	upheap ((WT *)timers, timercnt - 1);
781	}	1017	}
782		1018
783	void	1019	void
784	evtimer_stop (struct ev_timer *w)	1020	ev_timer_stop (EV_P_ struct ev_timer *w)
785	{	1021	{
786	ev_clear ((W)w);	1022	ev_clear_pending (EV_A_ (W)w);
787	if (!ev_is_active (w))	1023	if (!ev_is_active (w))
788	return;	1024	return;
789		1025
790	if (w->active < timercnt--)	1026	if (w->active < timercnt--)
791	{	1027	{
…		…
793	downheap ((WT *)timers, timercnt, w->active - 1);	1029	downheap ((WT *)timers, timercnt, w->active - 1);
794	}	1030	}
795		1031
796	w->at = w->repeat;	1032	w->at = w->repeat;
797		1033
798	ev_stop ((W)w);	1034	ev_stop (EV_A_ (W)w);
799	}	1035	}
800		1036
801	void	1037	void
802	evtimer_again (struct ev_timer *w)	1038	ev_timer_again (EV_P_ struct ev_timer *w)
803	{	1039	{
804	if (ev_is_active (w))	1040	if (ev_is_active (w))
805	{	1041	{
806	if (w->repeat)	1042	if (w->repeat)
807	{	1043	{
808	w->at = now + w->repeat;	1044	w->at = mn_now + w->repeat;
809	downheap ((WT *)timers, timercnt, w->active - 1);	1045	downheap ((WT *)timers, timercnt, w->active - 1);
810	}	1046	}
811	else	1047	else
812	evtimer_stop (w);	1048	ev_timer_stop (EV_A_ w);
813	}	1049	}
814	else if (w->repeat)	1050	else if (w->repeat)
815	evtimer_start (w);	1051	ev_timer_start (EV_A_ w);
816	}	1052	}
817		1053
818	void	1054	void
819	evperiodic_start (struct ev_periodic *w)	1055	ev_periodic_start (EV_P_ struct ev_periodic *w)
820	{	1056	{
821	if (ev_is_active (w))	1057	if (ev_is_active (w))
822	return;	1058	return;
823		1059
824	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1060	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
825		1061
826	/* this formula differs from the one in periodic_reify because we do not always round up */	1062	/* this formula differs from the one in periodic_reify because we do not always round up */
827	if (w->interval)	1063	if (w->interval)
828	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1064	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
829		1065
830	ev_start ((W)w, ++periodiccnt);	1066	ev_start (EV_A_ (W)w, ++periodiccnt);
831	array_needsize (periodics, periodicmax, periodiccnt, );	1067	array_needsize (periodics, periodicmax, periodiccnt, );
832	periodics [periodiccnt - 1] = w;	1068	periodics [periodiccnt - 1] = w;
833	upheap ((WT *)periodics, periodiccnt - 1);	1069	upheap ((WT *)periodics, periodiccnt - 1);
834	}	1070	}
835		1071
836	void	1072	void
837	evperiodic_stop (struct ev_periodic *w)	1073	ev_periodic_stop (EV_P_ struct ev_periodic *w)
838	{	1074	{
839	ev_clear ((W)w);	1075	ev_clear_pending (EV_A_ (W)w);
840	if (!ev_is_active (w))	1076	if (!ev_is_active (w))
841	return;	1077	return;
842		1078
843	if (w->active < periodiccnt--)	1079	if (w->active < periodiccnt--)
844	{	1080	{
845	periodics [w->active - 1] = periodics [periodiccnt];	1081	periodics [w->active - 1] = periodics [periodiccnt];
846	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1082	downheap ((WT *)periodics, periodiccnt, w->active - 1);
847	}	1083	}
848		1084
849	ev_stop ((W)w);	1085	ev_stop (EV_A_ (W)w);
850	}	1086	}
851		1087
		1088	#ifndef SA_RESTART
		1089	# define SA_RESTART 0
		1090	#endif
		1091
852	void	1092	void
853	evsignal_start (struct ev_signal *w)	1093	ev_signal_start (EV_P_ struct ev_signal *w)
854	{	1094	{
855	if (ev_is_active (w))	1095	if (ev_is_active (w))
856	return;	1096	return;
857		1097
		1098	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1099
858	ev_start ((W)w, 1);	1100	ev_start (EV_A_ (W)w, 1);
859	array_needsize (signals, signalmax, w->signum, signals_init);	1101	array_needsize (signals, signalmax, w->signum, signals_init);
860	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1102	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
861		1103
862	if (!w->next)	1104	if (!w->next)
863	{	1105	{
864	struct sigaction sa;	1106	struct sigaction sa;
865	sa.sa_handler = sighandler;	1107	sa.sa_handler = sighandler;
866	sigfillset (&sa.sa_mask);	1108	sigfillset (&sa.sa_mask);
867	sa.sa_flags = 0;	1109	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
868	sigaction (w->signum, &sa, 0);	1110	sigaction (w->signum, &sa, 0);
869	}	1111	}
870	}	1112	}
871		1113
872	void	1114	void
873	evsignal_stop (struct ev_signal *w)	1115	ev_signal_stop (EV_P_ struct ev_signal *w)
874	{	1116	{
875	ev_clear ((W)w);	1117	ev_clear_pending (EV_A_ (W)w);
876	if (!ev_is_active (w))	1118	if (!ev_is_active (w))
877	return;	1119	return;
878		1120
879	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1121	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
880	ev_stop ((W)w);	1122	ev_stop (EV_A_ (W)w);
881		1123
882	if (!signals [w->signum - 1].head)	1124	if (!signals [w->signum - 1].head)
883	signal (w->signum, SIG_DFL);	1125	signal (w->signum, SIG_DFL);
884	}	1126	}
885		1127
		1128	void
886	void evidle_start (struct ev_idle *w)	1129	ev_idle_start (EV_P_ struct ev_idle *w)
887	{	1130	{
888	if (ev_is_active (w))	1131	if (ev_is_active (w))
889	return;	1132	return;
890		1133
891	ev_start ((W)w, ++idlecnt);	1134	ev_start (EV_A_ (W)w, ++idlecnt);
892	array_needsize (idles, idlemax, idlecnt, );	1135	array_needsize (idles, idlemax, idlecnt, );
893	idles [idlecnt - 1] = w;	1136	idles [idlecnt - 1] = w;
894	}	1137	}
895		1138
		1139	void
896	void evidle_stop (struct ev_idle *w)	1140	ev_idle_stop (EV_P_ struct ev_idle *w)
897	{	1141	{
898	ev_clear ((W)w);	1142	ev_clear_pending (EV_A_ (W)w);
899	if (ev_is_active (w))	1143	if (ev_is_active (w))
900	return;	1144	return;
901		1145
902	idles [w->active - 1] = idles [--idlecnt];	1146	idles [w->active - 1] = idles [--idlecnt];
903	ev_stop ((W)w);	1147	ev_stop (EV_A_ (W)w);
904	}	1148	}
905		1149
		1150	void
906	void evprepare_start (struct ev_prepare *w)	1151	ev_prepare_start (EV_P_ struct ev_prepare *w)
907	{	1152	{
908	if (ev_is_active (w))	1153	if (ev_is_active (w))
909	return;	1154	return;
910		1155
911	ev_start ((W)w, ++preparecnt);	1156	ev_start (EV_A_ (W)w, ++preparecnt);
912	array_needsize (prepares, preparemax, preparecnt, );	1157	array_needsize (prepares, preparemax, preparecnt, );
913	prepares [preparecnt - 1] = w;	1158	prepares [preparecnt - 1] = w;
914	}	1159	}
915		1160
		1161	void
916	void evprepare_stop (struct ev_prepare *w)	1162	ev_prepare_stop (EV_P_ struct ev_prepare *w)
917	{	1163	{
918	ev_clear ((W)w);	1164	ev_clear_pending (EV_A_ (W)w);
919	if (ev_is_active (w))	1165	if (ev_is_active (w))
920	return;	1166	return;
921		1167
922	prepares [w->active - 1] = prepares [--preparecnt];	1168	prepares [w->active - 1] = prepares [--preparecnt];
923	ev_stop ((W)w);	1169	ev_stop (EV_A_ (W)w);
924	}	1170	}
925		1171
		1172	void
926	void evcheck_start (struct ev_check *w)	1173	ev_check_start (EV_P_ struct ev_check *w)
927	{	1174	{
928	if (ev_is_active (w))	1175	if (ev_is_active (w))
929	return;	1176	return;
930		1177
931	ev_start ((W)w, ++checkcnt);	1178	ev_start (EV_A_ (W)w, ++checkcnt);
932	array_needsize (checks, checkmax, checkcnt, );	1179	array_needsize (checks, checkmax, checkcnt, );
933	checks [checkcnt - 1] = w;	1180	checks [checkcnt - 1] = w;
934	}	1181	}
935		1182
		1183	void
936	void evcheck_stop (struct ev_check *w)	1184	ev_check_stop (EV_P_ struct ev_check *w)
937	{	1185	{
938	ev_clear ((W)w);	1186	ev_clear_pending (EV_A_ (W)w);
939	if (ev_is_active (w))	1187	if (ev_is_active (w))
940	return;	1188	return;
941		1189
942	checks [w->active - 1] = checks [--checkcnt];	1190	checks [w->active - 1] = checks [--checkcnt];
943	ev_stop ((W)w);	1191	ev_stop (EV_A_ (W)w);
944	}	1192	}
945		1193
		1194	void
946	void evchild_start (struct ev_child *w)	1195	ev_child_start (EV_P_ struct ev_child *w)
947	{	1196	{
948	if (ev_is_active (w))	1197	if (ev_is_active (w))
949	return;	1198	return;
950		1199
951	ev_start ((W)w, 1);	1200	ev_start (EV_A_ (W)w, 1);
952	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1201	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
953	}	1202	}
954		1203
		1204	void
955	void evchild_stop (struct ev_child *w)	1205	ev_child_stop (EV_P_ struct ev_child *w)
956	{	1206	{
957	ev_clear ((W)w);	1207	ev_clear_pending (EV_A_ (W)w);
958	if (ev_is_active (w))	1208	if (ev_is_active (w))
959	return;	1209	return;
960		1210
961	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1211	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
962	ev_stop ((W)w);	1212	ev_stop (EV_A_ (W)w);
963	}	1213	}
964		1214
965	/*****************************************************************************/	1215	/*****************************************************************************/
966		1216
967	struct ev_once	1217	struct ev_once
…		…
971	void (cb)(int revents, void arg);	1221	void (cb)(int revents, void arg);
972	void *arg;	1222	void *arg;
973	};	1223	};
974		1224
975	static void	1225	static void
976	once_cb (struct ev_once *once, int revents)	1226	once_cb (EV_P_ struct ev_once *once, int revents)
977	{	1227	{
978	void (cb)(int revents, void arg) = once->cb;	1228	void (cb)(int revents, void arg) = once->cb;
979	void *arg = once->arg;	1229	void *arg = once->arg;
980		1230
981	evio_stop (&once->io);	1231	ev_io_stop (EV_A_ &once->io);
982	evtimer_stop (&once->to);	1232	ev_timer_stop (EV_A_ &once->to);
983	free (once);	1233	free (once);
984		1234
985	cb (revents, arg);	1235	cb (revents, arg);
986	}	1236	}
987		1237
988	static void	1238	static void
989	once_cb_io (struct ev_io *w, int revents)	1239	once_cb_io (EV_P_ struct ev_io *w, int revents)
990	{	1240	{
991	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1241	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
992	}	1242	}
993		1243
994	static void	1244	static void
995	once_cb_to (struct ev_timer *w, int revents)	1245	once_cb_to (EV_P_ struct ev_timer *w, int revents)
996	{	1246	{
997	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1247	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
998	}	1248	}
999		1249
1000	void	1250	void
1001	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1251	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1002	{	1252	{
1003	struct ev_once *once = malloc (sizeof (struct ev_once));	1253	struct ev_once *once = malloc (sizeof (struct ev_once));
1004		1254
1005	if (!once)	1255	if (!once)
1006	cb (EV_ERROR, arg);	1256	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1007	else	1257	else
1008	{	1258	{
1009	once->cb = cb;	1259	once->cb = cb;
1010	once->arg = arg;	1260	once->arg = arg;
1011		1261
1012	evw_init (&once->io, once_cb_io);	1262	ev_watcher_init (&once->io, once_cb_io);
1013
1014	if (fd >= 0)	1263	if (fd >= 0)
1015	{	1264	{
1016	evio_set (&once->io, fd, events);	1265	ev_io_set (&once->io, fd, events);
1017	evio_start (&once->io);	1266	ev_io_start (EV_A_ &once->io);
1018	}	1267	}
1019		1268
1020	evw_init (&once->to, once_cb_to);	1269	ev_watcher_init (&once->to, once_cb_to);
1021
1022	if (timeout >= 0.)	1270	if (timeout >= 0.)
1023	{	1271	{
1024	evtimer_set (&once->to, timeout, 0.);	1272	ev_timer_set (&once->to, timeout, 0.);
1025	evtimer_start (&once->to);	1273	ev_timer_start (EV_A_ &once->to);
1026	}	1274	}
1027	}	1275	}
1028	}	1276	}
1029		1277
1030	/*****************************************************************************/	1278	/*****************************************************************************/
…		…
1041		1289
1042	static void	1290	static void
1043	ocb (struct ev_timer *w, int revents)	1291	ocb (struct ev_timer *w, int revents)
1044	{	1292	{
1045	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);	1293	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1046	evtimer_stop (w);	1294	ev_timer_stop (w);
1047	evtimer_start (w);	1295	ev_timer_start (w);
1048	}	1296	}
1049		1297
1050	static void	1298	static void
1051	scb (struct ev_signal *w, int revents)	1299	scb (struct ev_signal *w, int revents)
1052	{	1300	{
1053	fprintf (stderr, "signal %x,%d\n", revents, w->signum);	1301	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1054	evio_stop (&wio);	1302	ev_io_stop (&wio);
1055	evio_start (&wio);	1303	ev_io_start (&wio);
1056	}	1304	}
1057		1305
1058	static void	1306	static void
1059	gcb (struct ev_signal *w, int revents)	1307	gcb (struct ev_signal *w, int revents)
1060	{	1308	{
…		…
1064		1312
1065	int main (void)	1313	int main (void)
1066	{	1314	{
1067	ev_init (0);	1315	ev_init (0);
1068		1316
1069	evio_init (&wio, sin_cb, 0, EV_READ);	1317	ev_io_init (&wio, sin_cb, 0, EV_READ);
1070	evio_start (&wio);	1318	ev_io_start (&wio);
1071		1319
1072	struct ev_timer t[10000];	1320	struct ev_timer t[10000];
1073		1321
1074	#if 0	1322	#if 0
1075	int i;	1323	int i;
1076	for (i = 0; i < 10000; ++i)	1324	for (i = 0; i < 10000; ++i)
1077	{	1325	{
1078	struct ev_timer *w = t + i;	1326	struct ev_timer *w = t + i;
1079	evw_init (w, ocb, i);	1327	ev_watcher_init (w, ocb, i);
1080	evtimer_init_abs (w, ocb, drand48 (), 0.99775533);	1328	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1081	evtimer_start (w);	1329	ev_timer_start (w);
1082	if (drand48 () < 0.5)	1330	if (drand48 () < 0.5)
1083	evtimer_stop (w);	1331	ev_timer_stop (w);
1084	}	1332	}
1085	#endif	1333	#endif
1086		1334
1087	struct ev_timer t1;	1335	struct ev_timer t1;
1088	evtimer_init (&t1, ocb, 5, 10);	1336	ev_timer_init (&t1, ocb, 5, 10);
1089	evtimer_start (&t1);	1337	ev_timer_start (&t1);
1090		1338
1091	struct ev_signal sig;	1339	struct ev_signal sig;
1092	evsignal_init (&sig, scb, SIGQUIT);	1340	ev_signal_init (&sig, scb, SIGQUIT);
1093	evsignal_start (&sig);	1341	ev_signal_start (&sig);
1094		1342
1095	struct ev_check cw;	1343	struct ev_check cw;
1096	evcheck_init (&cw, gcb);	1344	ev_check_init (&cw, gcb);
1097	evcheck_start (&cw);	1345	ev_check_start (&cw);
1098		1346
1099	struct ev_idle iw;	1347	struct ev_idle iw;
1100	evidle_init (&iw, gcb);	1348	ev_idle_init (&iw, gcb);
1101	evidle_start (&iw);	1349	ev_idle_start (&iw);
1102		1350
1103	ev_loop (0);	1351	ev_loop (0);
1104		1352
1105	return 0;	1353	return 0;
1106	}	1354	}

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Comparing libev/ev.c (file contents): Revision 1.26 by root, Wed Oct 31 21:50:15 2007 UTC vs. Revision 1.55 by root, Sun Nov 4 00:39:24 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.26 by root, Wed Oct 31 21:50:15 2007 UTC vs.
Revision 1.55 by root, Sun Nov 4 00:39:24 2007 UTC