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

Comparing libev/ev.c (file contents):
Revision 1.31 by root, Thu Nov 1 09:05:33 2007 UTC vs.
Revision 1.54 by root, Sun Nov 4 00:24:16 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	*/
29	#if EV_USE_CONFIG_H	31	#ifndef EV_STANDALONE
30	# include "config.h"	32	# include "config.h"
31	#endif	33	#endif
32		34
33	#include <math.h>	35	#include <math.h>
34	#include <stdlib.h>	36	#include <stdlib.h>
…		…
40	#include <stdio.h>	42	#include <stdio.h>
41		43
42	#include <assert.h>	44	#include <assert.h>
43	#include <errno.h>	45	#include <errno.h>
44	#include <sys/types.h>	46	#include <sys/types.h>
		47	#ifndef WIN32
45	#include <sys/wait.h>	48	# include <sys/wait.h>
		49	#endif
46	#include <sys/time.h>	50	#include <sys/time.h>
47	#include <time.h>	51	#include <time.h>
48		52
		53	/**/
		54
49	#ifndef EV_USE_MONOTONIC	55	#ifndef EV_USE_MONOTONIC
50	# ifdef CLOCK_MONOTONIC
51	# define EV_USE_MONOTONIC 1	56	# define EV_USE_MONOTONIC 1
52	# endif
53	#endif	57	#endif
54		58
55	#ifndef EV_USE_SELECT	59	#ifndef EV_USE_SELECT
56	# define EV_USE_SELECT 1	60	# define EV_USE_SELECT 1
57	#endif	61	#endif
58		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
59	#ifndef EV_USE_EPOLL	67	#ifndef EV_USE_EPOLL
60	# define EV_USE_EPOLL 0	68	# define EV_USE_EPOLL 0
61	#endif	69	#endif
62		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
		81	#ifndef CLOCK_MONOTONIC
		82	# undef EV_USE_MONOTONIC
		83	# define EV_USE_MONOTONIC 0
		84	#endif
		85
63	#ifndef CLOCK_REALTIME	86	#ifndef CLOCK_REALTIME
		87	# undef EV_USE_REALTIME
64	# define EV_USE_REALTIME 0	88	# define EV_USE_REALTIME 0
65	#endif	89	#endif
66	#ifndef EV_USE_REALTIME	90
67	# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */	91	/**/
68	#endif
69		92
70	#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) */
71	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detetc time jumps) */	94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
72	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
73	#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */	96	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
74		97
75	#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)
76		113
77	typedef struct ev_watcher *W;	114	typedef struct ev_watcher *W;
78	typedef struct ev_watcher_list *WL;	115	typedef struct ev_watcher_list *WL;
79	typedef struct ev_watcher_time *WT;	116	typedef struct ev_watcher_time *WT;
80		117
81	static ev_tstamp now, diff; /* monotonic clock */	118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
82	ev_tstamp ev_now;
83	int ev_method;
84
85	static int have_monotonic; /* runtime */
86
87	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
88	static void (*method_modify)(int fd, int oev, int nev);
89	static void (*method_poll)(ev_tstamp timeout);
90		119
91	/*****************************************************************************/	120	/*****************************************************************************/
92		121
93	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	#ifdef 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
94	ev_time (void)	156	ev_time (void)
95	{	157	{
96	#if EV_USE_REALTIME	158	#if EV_USE_REALTIME
97	struct timespec ts;	159	struct timespec ts;
98	clock_gettime (CLOCK_REALTIME, &ts);	160	clock_gettime (CLOCK_REALTIME, &ts);
…		…
102	gettimeofday (&tv, 0);	164	gettimeofday (&tv, 0);
103	return tv.tv_sec + tv.tv_usec * 1e-6;	165	return tv.tv_sec + tv.tv_usec * 1e-6;
104	#endif	166	#endif
105	}	167	}
106		168
107	static ev_tstamp	169	inline ev_tstamp
108	get_clock (void)	170	get_clock (void)
109	{	171	{
110	#if EV_USE_MONOTONIC	172	#if EV_USE_MONOTONIC
111	if (have_monotonic)	173	if (expect_true (have_monotonic))
112	{	174	{
113	struct timespec ts;	175	struct timespec ts;
114	clock_gettime (CLOCK_MONOTONIC, &ts);	176	clock_gettime (CLOCK_MONOTONIC, &ts);
115	return ts.tv_sec + ts.tv_nsec * 1e-9;	177	return ts.tv_sec + ts.tv_nsec * 1e-9;
116	}	178	}
117	#endif	179	#endif
118		180
119	return ev_time ();	181	return ev_time ();
120	}	182	}
121		183
		184	ev_tstamp
		185	ev_now (EV_P)
		186	{
		187	return rt_now;
		188	}
		189
122	#define array_roundsize(base,n) ((n) \| 4 & ~3)	190	#define array_roundsize(base,n) ((n) \| 4 & ~3)
123		191
124	#define array_needsize(base,cur,cnt,init) \	192	#define array_needsize(base,cur,cnt,init) \
125	if ((cnt) > cur) \	193	if (expect_false ((cnt) > cur)) \
126	{ \	194	{ \
127	int newcnt = cur; \	195	int newcnt = cur; \
128	do \	196	do \
129	{ \	197	{ \
130	newcnt = array_roundsize (base, newcnt << 1); \	198	newcnt = array_roundsize (base, newcnt << 1); \
…		…
136	cur = newcnt; \	204	cur = newcnt; \
137	}	205	}
138		206
139	/*****************************************************************************/	207	/*****************************************************************************/
140		208
141	typedef struct
142	{
143	struct ev_io *head;
144	int events;
145	} ANFD;
146
147	static ANFD *anfds;
148	static int anfdmax;
149
150	static void	209	static void
151	anfds_init (ANFD *base, int count)	210	anfds_init (ANFD *base, int count)
152	{	211	{
153	while (count--)	212	while (count--)
154	{	213	{
155	base->head = 0;	214	base->head = 0;
156	base->events = EV_NONE;	215	base->events = EV_NONE;
		216	base->reify = 0;
		217
157	++base;	218	++base;
158	}	219	}
159	}	220	}
160		221
161	typedef struct
162	{
163	W w;
164	int events;
165	} ANPENDING;
166
167	static ANPENDING *pendings;
168	static int pendingmax, pendingcnt;
169
170	static void	222	static void
171	event (W w, int events)	223	event (EV_P_ W w, int events)
172	{	224	{
		225	if (w->pending)
		226	{
		227	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
		228	return;
		229	}
		230
173	w->pending = ++pendingcnt;	231	w->pending = ++pendingcnt [ABSPRI (w)];
174	array_needsize (pendings, pendingmax, pendingcnt, );	232	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
175	pendings [pendingcnt - 1].w = w;	233	pendings [ABSPRI (w)][w->pending - 1].w = w;
176	pendings [pendingcnt - 1].events = events;	234	pendings [ABSPRI (w)][w->pending - 1].events = events;
177	}	235	}
178		236
179	static void	237	static void
180	queue_events (W *events, int eventcnt, int type)	238	queue_events (EV_P_ W *events, int eventcnt, int type)
181	{	239	{
182	int i;	240	int i;
183		241
184	for (i = 0; i < eventcnt; ++i)	242	for (i = 0; i < eventcnt; ++i)
185	event (events [i], type);	243	event (EV_A_ events [i], type);
186	}	244	}
187		245
188	static void	246	static void
189	fd_event (int fd, int events)	247	fd_event (EV_P_ int fd, int events)
190	{	248	{
191	ANFD *anfd = anfds + fd;	249	ANFD *anfd = anfds + fd;
192	struct ev_io *w;	250	struct ev_io *w;
193		251
194	for (w = anfd->head; w; w = w->next)	252	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
195	{	253	{
196	int ev = w->events & events;	254	int ev = w->events & events;
197		255
198	if (ev)	256	if (ev)
199	event ((W)w, ev);	257	event (EV_A_ (W)w, ev);
200	}	258	}
201	}	259	}
202		260
203	/*****************************************************************************/	261	/*****************************************************************************/
204		262
205	static int *fdchanges;
206	static int fdchangemax, fdchangecnt;
207
208	static void	263	static void
209	fd_reify (void)	264	fd_reify (EV_P)
210	{	265	{
211	int i;	266	int i;
212		267
213	for (i = 0; i < fdchangecnt; ++i)	268	for (i = 0; i < fdchangecnt; ++i)
214	{	269	{
…		…
216	ANFD *anfd = anfds + fd;	271	ANFD *anfd = anfds + fd;
217	struct ev_io *w;	272	struct ev_io *w;
218		273
219	int events = 0;	274	int events = 0;
220		275
221	for (w = anfd->head; w; w = w->next)	276	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
222	events \|= w->events;	277	events \|= w->events;
223		278
224	anfd->events &= ~EV_REIFY;	279	anfd->reify = 0;
225		280
226	if (anfd->events != events)	281	if (anfd->events != events)
227	{	282	{
228	method_modify (fd, anfd->events, events);	283	method_modify (EV_A_ fd, anfd->events, events);
229	anfd->events = events;	284	anfd->events = events;
230	}	285	}
231	}	286	}
232		287
233	fdchangecnt = 0;	288	fdchangecnt = 0;
234	}	289	}
235		290
236	static void	291	static void
237	fd_change (int fd)	292	fd_change (EV_P_ int fd)
238	{	293	{
239	if (anfds [fd].events & EV_REIFY \|\| fdchangecnt < 0)	294	if (anfds [fd].reify \|\| fdchangecnt < 0)
240	return;	295	return;
241		296
242	anfds [fd].events \|= EV_REIFY;	297	anfds [fd].reify = 1;
243		298
244	++fdchangecnt;	299	++fdchangecnt;
245	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
246	fdchanges [fdchangecnt - 1] = fd;	301	fdchanges [fdchangecnt - 1] = fd;
247	}	302	}
248		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	}
		314	}
		315
249	/* called on EBADF to verify fds */	316	/* called on EBADF to verify fds */
250	static void	317	static void
251	fd_recheck (void)	318	fd_ebadf (EV_P)
252	{	319	{
253	int fd;	320	int fd;
254		321
255	for (fd = 0; fd < anfdmax; ++fd)	322	for (fd = 0; fd < anfdmax; ++fd)
256	if (anfds [fd].events)	323	if (anfds [fd].events)
257	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
258	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)
259	{	336	{
260	event ((W)anfds [fd].head, EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT);	337	close (fd);
261	ev_io_stop (anfds [fd].head);	338	fd_kill (EV_A_ fd);
		339	return;
262	}	340	}
263	}	341	}
264		342
265	/*****************************************************************************/	343	/*****************************************************************************/
266		344
267	static struct ev_timer **timers;
268	static int timermax, timercnt;
269
270	static struct ev_periodic **periodics;
271	static int periodicmax, periodiccnt;
272
273	static void	345	static void
274	upheap (WT *timers, int k)	346	upheap (WT *heap, int k)
275	{	347	{
276	WT w = timers [k];	348	WT w = heap [k];
277		349
278	while (k && timers [k >> 1]->at > w->at)	350	while (k && heap [k >> 1]->at > w->at)
279	{	351	{
280	timers [k] = timers [k >> 1];	352	heap [k] = heap [k >> 1];
281	timers [k]->active = k + 1;	353	heap [k]->active = k + 1;
282	k >>= 1;	354	k >>= 1;
283	}	355	}
284		356
285	timers [k] = w;	357	heap [k] = w;
286	timers [k]->active = k + 1;	358	heap [k]->active = k + 1;
287		359
288	}	360	}
289		361
290	static void	362	static void
291	downheap (WT *timers, int N, int k)	363	downheap (WT *heap, int N, int k)
292	{	364	{
293	WT w = timers [k];	365	WT w = heap [k];
294		366
295	while (k < (N >> 1))	367	while (k < (N >> 1))
296	{	368	{
297	int j = k << 1;	369	int j = k << 1;
298		370
299	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	371	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
300	++j;	372	++j;
301		373
302	if (w->at <= timers [j]->at)	374	if (w->at <= heap [j]->at)
303	break;	375	break;
304		376
305	timers [k] = timers [j];	377	heap [k] = heap [j];
306	timers [k]->active = k + 1;	378	heap [k]->active = k + 1;
307	k = j;	379	k = j;
308	}	380	}
309		381
310	timers [k] = w;	382	heap [k] = w;
311	timers [k]->active = k + 1;	383	heap [k]->active = k + 1;
312	}	384	}
313		385
314	/*****************************************************************************/	386	/*****************************************************************************/
315		387
316	typedef struct	388	typedef struct
317	{	389	{
318	struct ev_signal *head;	390	struct ev_watcher_list *head;
319	sig_atomic_t gotsig;	391	sig_atomic_t volatile gotsig;
320	} ANSIG;	392	} ANSIG;
321		393
322	static ANSIG *signals;	394	static ANSIG *signals;
323	static int signalmax;	395	static int signalmax;
324		396
325	static int sigpipe [2];	397	static int sigpipe [2];
326	static sig_atomic_t gotsig;	398	static sig_atomic_t volatile gotsig;
327	static struct ev_io sigev;
328		399
329	static void	400	static void
330	signals_init (ANSIG *base, int count)	401	signals_init (ANSIG *base, int count)
331	{	402	{
332	while (count--)	403	while (count--)
333	{	404	{
334	base->head = 0;	405	base->head = 0;
335	base->gotsig = 0;	406	base->gotsig = 0;
		407
336	++base;	408	++base;
337	}	409	}
338	}	410	}
339		411
340	static void	412	static void
…		…
342	{	414	{
343	signals [signum - 1].gotsig = 1;	415	signals [signum - 1].gotsig = 1;
344		416
345	if (!gotsig)	417	if (!gotsig)
346	{	418	{
		419	int old_errno = errno;
347	gotsig = 1;	420	gotsig = 1;
348	write (sigpipe [1], &gotsig, 1);	421	write (sigpipe [1], &signum, 1);
		422	errno = old_errno;
349	}	423	}
350	}	424	}
351		425
352	static void	426	static void
353	sigcb (struct ev_io *iow, int revents)	427	sigcb (EV_P_ struct ev_io *iow, int revents)
354	{	428	{
355	struct ev_signal *w;	429	struct ev_watcher_list *w;
356	int sig;	430	int signum;
357		431
		432	read (sigpipe [0], &revents, 1);
358	gotsig = 0;	433	gotsig = 0;
359	read (sigpipe [0], &revents, 1);
360		434
361	for (sig = signalmax; sig--; )	435	for (signum = signalmax; signum--; )
362	if (signals [sig].gotsig)	436	if (signals [signum].gotsig)
363	{	437	{
364	signals [sig].gotsig = 0;	438	signals [signum].gotsig = 0;
365		439
366	for (w = signals [sig].head; w; w = w->next)	440	for (w = signals [signum].head; w; w = w->next)
367	event ((W)w, EV_SIGNAL);	441	event (EV_A_ (W)w, EV_SIGNAL);
368	}	442	}
369	}	443	}
370		444
371	static void	445	static void
372	siginit (void)	446	siginit (EV_P)
373	{	447	{
		448	#ifndef WIN32
374	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	449	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
375	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	450	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
376		451
377	/* rather than sort out wether we really need nb, set it */	452	/* rather than sort out wether we really need nb, set it */
378	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	453	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
379	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	454	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		455	#endif
380		456
381	ev_io_set (&sigev, sigpipe [0], EV_READ);	457	ev_io_set (&sigev, sigpipe [0], EV_READ);
382	ev_io_start (&sigev);	458	ev_io_start (EV_A_ &sigev);
		459	ev_unref (EV_A); /* child watcher should not keep loop alive */
383	}	460	}
384		461
385	/*****************************************************************************/	462	/*****************************************************************************/
386		463
387	static struct ev_idle **idles;	464	#ifndef WIN32
388	static int idlemax, idlecnt;
389
390	static struct ev_prepare **prepares;
391	static int preparemax, preparecnt;
392
393	static struct ev_check **checks;
394	static int checkmax, checkcnt;
395
396	/*****************************************************************************/
397
398	static struct ev_child *childs [PID_HASHSIZE];
399	static struct ev_signal childev;
400		465
401	#ifndef WCONTINUED	466	#ifndef WCONTINUED
402	# define WCONTINUED 0	467	# define WCONTINUED 0
403	#endif	468	#endif
404		469
405	static void	470	static void
406	childcb (struct ev_signal *sw, int revents)	471	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
407	{	472	{
408	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	{
409	int pid, status;	488	int pid, status;
410		489
411	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	490	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
412	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	491	{
413	if (w->pid == pid \|\| w->pid == -1)	492	/* make sure we are called again until all childs have been reaped */
414	{	493	event (EV_A_ (W)sw, EV_SIGNAL);
415	w->status = status;	494
416	event ((W)w, EV_CHILD);	495	child_reap (EV_A_ sw, pid, pid, status);
417	}	496	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		497	}
418	}	498	}
		499
		500	#endif
419		501
420	/*****************************************************************************/	502	/*****************************************************************************/
421		503
		504	#if EV_USE_KQUEUE
		505	# include "ev_kqueue.c"
		506	#endif
422	#if EV_USE_EPOLL	507	#if EV_USE_EPOLL
423	# include "ev_epoll.c"	508	# include "ev_epoll.c"
424	#endif	509	#endif
		510	#if EV_USEV_POLL
		511	# include "ev_poll.c"
		512	#endif
425	#if EV_USE_SELECT	513	#if EV_USE_SELECT
426	# include "ev_select.c"	514	# include "ev_select.c"
427	#endif	515	#endif
428		516
429	int	517	int
…		…
436	ev_version_minor (void)	524	ev_version_minor (void)
437	{	525	{
438	return EV_VERSION_MINOR;	526	return EV_VERSION_MINOR;
439	}	527	}
440		528
441	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)
442	{	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	static void
		548	loop_init (EV_P_ int methods)
		549	{
443	if (!ev_method)	550	if (!method)
444	{	551	{
445	#if EV_USE_MONOTONIC	552	#if EV_USE_MONOTONIC
446	{	553	{
447	struct timespec ts;	554	struct timespec ts;
448	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	555	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
449	have_monotonic = 1;	556	have_monotonic = 1;
450	}	557	}
451	#endif	558	#endif
452		559
453	ev_now = ev_time ();	560	rt_now = ev_time ();
454	now = get_clock ();	561	mn_now = get_clock ();
		562	now_floor = mn_now;
455	diff = ev_now - now;	563	rtmn_diff = rt_now - mn_now;
456		564
457	if (pipe (sigpipe))	565	if (pipe (sigpipe))
458	return 0;	566	return 0;
459		567
		568	if (methods == EVMETHOD_AUTO)
		569	if (!enable_secure () && getenv ("LIBmethodS"))
		570	methods = atoi (getenv ("LIBmethodS"));
		571	else
460	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
461	#if EV_USE_EPOLL	578	#if EV_USE_EPOLL
462	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	579	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
		580	#endif
		581	#if EV_USEV_POLL
		582	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
463	#endif	583	#endif
464	#if EV_USE_SELECT	584	#if EV_USE_SELECT
465	if (ev_method == EVMETHOD_NONE) select_init (flags);	585	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
466	#endif	586	#endif
467		587
468	if (ev_method)	588	if (method)
469	{	589	{
470	ev_watcher_init (&sigev, sigcb);	590	ev_watcher_init (&sigev, sigcb);
		591	ev_set_priority (&sigev, EV_MAXPRI);
471	siginit ();	592	siginit (EV_A);
472		593
		594	#ifndef WIN32
473	ev_signal_init (&childev, childcb, SIGCHLD);	595	ev_signal_init (&childev, childcb, SIGCHLD);
		596	ev_set_priority (&childev, EV_MAXPRI);
474	ev_signal_start (&childev);	597	ev_signal_start (EV_A_ &childev);
		598	ev_unref (EV_A); /* child watcher should not keep loop alive */
		599	#endif
475	}	600	}
476	}	601	}
477		602
478	return ev_method;	603	return method;
479	}	604	}
		605
		606	#ifdef 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	loop_init (EV_A_ methods);
		614
		615	return loop;
		616	}
		617
		618	void
		619	ev_loop_delete (EV_P)
		620	{
		621	/TODO/
		622	free (loop);
		623	}
		624
		625	#else
		626
		627	int
		628	ev_init (int methods)
		629	{
		630	loop_init ();
		631	}
		632
		633	#endif
480		634
481	/*****************************************************************************/	635	/*****************************************************************************/
482		636
483	void	637	void
484	ev_prefork (void)	638	ev_fork_prepare (void)
485	{	639	{
486	/* nop */	640	/* nop */
487	}	641	}
488		642
489	void	643	void
490	ev_postfork_parent (void)	644	ev_fork_parent (void)
491	{	645	{
492	/* nop */	646	/* nop */
493	}	647	}
494		648
495	void	649	void
496	ev_postfork_child (void)	650	ev_fork_child (void)
497	{	651	{
		652	/TODO/
		653	#if !EV_MULTIPLICITY
498	#if EV_USE_EPOLL	654	#if EV_USE_EPOLL
499	if (ev_method == EVMETHOD_EPOLL)	655	if (method == EVMETHOD_EPOLL)
500	epoll_postfork_child ();	656	epoll_postfork_child (EV_A);
501	#endif	657	#endif
502		658
503	ev_io_stop (&sigev);	659	ev_io_stop (EV_A_ &sigev);
504	close (sigpipe [0]);	660	close (sigpipe [0]);
505	close (sigpipe [1]);	661	close (sigpipe [1]);
506	pipe (sigpipe);	662	pipe (sigpipe);
507	siginit ();	663	siginit (EV_A);
		664	#endif
508	}	665	}
509		666
510	/*****************************************************************************/	667	/*****************************************************************************/
511		668
512	static void	669	static void
513	call_pending (void)	670	call_pending (EV_P)
514	{	671	{
		672	int pri;
		673
		674	for (pri = NUMPRI; pri--; )
515	while (pendingcnt)	675	while (pendingcnt [pri])
516	{	676	{
517	ANPENDING *p = pendings + --pendingcnt;	677	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
518		678
519	if (p->w)	679	if (p->w)
520	{	680	{
521	p->w->pending = 0;	681	p->w->pending = 0;
522	p->w->cb (p->w, p->events);	682	p->w->cb (EV_A_ p->w, p->events);
523	}	683	}
524	}	684	}
525	}	685	}
526		686
527	static void	687	static void
528	timers_reify (void)	688	timers_reify (EV_P)
529	{	689	{
530	while (timercnt && timers [0]->at <= now)	690	while (timercnt && timers [0]->at <= mn_now)
531	{	691	{
532	struct ev_timer *w = timers [0];	692	struct ev_timer *w = timers [0];
533		693
534	/* first reschedule or stop timer */	694	/* first reschedule or stop timer */
535	if (w->repeat)	695	if (w->repeat)
536	{	696	{
		697	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
537	w->at = now + w->repeat;	698	w->at = mn_now + w->repeat;
538	assert (("timer timeout in the past, negative repeat?", w->at > now));
539	downheap ((WT *)timers, timercnt, 0);	699	downheap ((WT *)timers, timercnt, 0);
540	}	700	}
541	else	701	else
542	ev_timer_stop (w); /* nonrepeating: stop timer */	702	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
543		703
544	event ((W)w, EV_TIMEOUT);	704	event (EV_A_ (W)w, EV_TIMEOUT);
545	}	705	}
546	}	706	}
547		707
548	static void	708	static void
549	periodics_reify (void)	709	periodics_reify (EV_P)
550	{	710	{
551	while (periodiccnt && periodics [0]->at <= ev_now)	711	while (periodiccnt && periodics [0]->at <= rt_now)
552	{	712	{
553	struct ev_periodic *w = periodics [0];	713	struct ev_periodic *w = periodics [0];
554		714
555	/* first reschedule or stop timer */	715	/* first reschedule or stop timer */
556	if (w->interval)	716	if (w->interval)
557	{	717	{
558	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	718	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;
559	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	719	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
560	downheap ((WT *)periodics, periodiccnt, 0);	720	downheap ((WT *)periodics, periodiccnt, 0);
561	}	721	}
562	else	722	else
563	ev_periodic_stop (w); /* nonrepeating: stop timer */	723	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
564		724
565	event ((W)w, EV_TIMEOUT);	725	event (EV_A_ (W)w, EV_PERIODIC);
566	}	726	}
567	}	727	}
568		728
569	static void	729	static void
570	periodics_reschedule (ev_tstamp diff)	730	periodics_reschedule (EV_P)
571	{	731	{
572	int i;	732	int i;
573		733
574	/* adjust periodics after time jump */	734	/* adjust periodics after time jump */
575	for (i = 0; i < periodiccnt; ++i)	735	for (i = 0; i < periodiccnt; ++i)
576	{	736	{
577	struct ev_periodic *w = periodics [i];	737	struct ev_periodic *w = periodics [i];
578		738
579	if (w->interval)	739	if (w->interval)
580	{	740	{
581	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	741	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
582		742
583	if (fabs (diff) >= 1e-4)	743	if (fabs (diff) >= 1e-4)
584	{	744	{
585	ev_periodic_stop (w);	745	ev_periodic_stop (EV_A_ w);
586	ev_periodic_start (w);	746	ev_periodic_start (EV_A_ w);
587		747
588	i = 0; /* restart loop, inefficient, but time jumps should be rare */	748	i = 0; /* restart loop, inefficient, but time jumps should be rare */
589	}	749	}
590	}	750	}
591	}	751	}
592	}	752	}
593		753
		754	inline int
		755	time_update_monotonic (EV_P)
		756	{
		757	mn_now = get_clock ();
		758
		759	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		760	{
		761	rt_now = rtmn_diff + mn_now;
		762	return 0;
		763	}
		764	else
		765	{
		766	now_floor = mn_now;
		767	rt_now = ev_time ();
		768	return 1;
		769	}
		770	}
		771
594	static void	772	static void
595	time_update (void)	773	time_update (EV_P)
596	{	774	{
597	int i;	775	int i;
598		776
599	ev_now = ev_time ();	777	#if EV_USE_MONOTONIC
600
601	if (have_monotonic)	778	if (expect_true (have_monotonic))
602	{	779	{
603	ev_tstamp odiff = diff;	780	if (time_update_monotonic (EV_A))
604
605	for (i = 4; --i; ) /* loop a few times, before making important decisions */
606	{	781	{
607	now = get_clock ();	782	ev_tstamp odiff = rtmn_diff;
		783
		784	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		785	{
608	diff = ev_now - now;	786	rtmn_diff = rt_now - mn_now;
609		787
610	if (fabs (odiff - diff) < MIN_TIMEJUMP)	788	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
611	return; /* all is well */	789	return; /* all is well */
612		790
613	ev_now = ev_time ();	791	rt_now = ev_time ();
		792	mn_now = get_clock ();
		793	now_floor = mn_now;
		794	}
		795
		796	periodics_reschedule (EV_A);
		797	/* no timer adjustment, as the monotonic clock doesn't jump */
		798	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
614	}	799	}
615
616	periodics_reschedule (diff - odiff);
617	/* no timer adjustment, as the monotonic clock doesn't jump */
618	}	800	}
619	else	801	else
		802	#endif
620	{	803	{
621	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)	804	rt_now = ev_time ();
		805
		806	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
622	{	807	{
623	periodics_reschedule (ev_now - now);	808	periodics_reschedule (EV_A);
624		809
625	/* adjust timers. this is easy, as the offset is the same for all */	810	/* adjust timers. this is easy, as the offset is the same for all */
626	for (i = 0; i < timercnt; ++i)	811	for (i = 0; i < timercnt; ++i)
627	timers [i]->at += diff;	812	timers [i]->at += rt_now - mn_now;
628	}	813	}
629		814
630	now = ev_now;	815	mn_now = rt_now;
631	}	816	}
632	}	817	}
633		818
634	int ev_loop_done;	819	void
		820	ev_ref (EV_P)
		821	{
		822	++activecnt;
		823	}
635		824
		825	void
		826	ev_unref (EV_P)
		827	{
		828	--activecnt;
		829	}
		830
		831	static int loop_done;
		832
		833	void
636	void ev_loop (int flags)	834	ev_loop (EV_P_ int flags)
637	{	835	{
638	double block;	836	double block;
639	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	837	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
640		838
641	do	839	do
642	{	840	{
643	/* queue check watchers (and execute them) */	841	/* queue check watchers (and execute them) */
644	if (preparecnt)	842	if (expect_false (preparecnt))
645	{	843	{
646	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	844	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
647	call_pending ();	845	call_pending (EV_A);
648	}	846	}
649		847
650	/* update fd-related kernel structures */	848	/* update fd-related kernel structures */
651	fd_reify ();	849	fd_reify (EV_A);
652		850
653	/* calculate blocking time */	851	/* calculate blocking time */
654		852
655	/* we only need this for !monotonic clockor timers, but as we basically	853	/* we only need this for !monotonic clockor timers, but as we basically
656	always have timers, we just calculate it always */	854	always have timers, we just calculate it always */
		855	#if EV_USE_MONOTONIC
		856	if (expect_true (have_monotonic))
		857	time_update_monotonic (EV_A);
		858	else
		859	#endif
		860	{
657	ev_now = ev_time ();	861	rt_now = ev_time ();
		862	mn_now = rt_now;
		863	}
658		864
659	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	865	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
660	block = 0.;	866	block = 0.;
661	else	867	else
662	{	868	{
663	block = MAX_BLOCKTIME;	869	block = MAX_BLOCKTIME;
664		870
665	if (timercnt)	871	if (timercnt)
666	{	872	{
667	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	873	ev_tstamp to = timers [0]->at - mn_now + method_fudge;
668	if (block > to) block = to;	874	if (block > to) block = to;
669	}	875	}
670		876
671	if (periodiccnt)	877	if (periodiccnt)
672	{	878	{
673	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	879	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
674	if (block > to) block = to;	880	if (block > to) block = to;
675	}	881	}
676		882
677	if (block < 0.) block = 0.;	883	if (block < 0.) block = 0.;
678	}	884	}
679		885
680	method_poll (block);	886	method_poll (EV_A_ block);
681		887
682	/* update ev_now, do magic */	888	/* update rt_now, do magic */
683	time_update ();	889	time_update (EV_A);
684		890
685	/* queue pending timers and reschedule them */	891	/* queue pending timers and reschedule them */
686	timers_reify (); /* relative timers called last */	892	timers_reify (EV_A); /* relative timers called last */
687	periodics_reify (); /* absolute timers called first */	893	periodics_reify (EV_A); /* absolute timers called first */
688		894
689	/* queue idle watchers unless io or timers are pending */	895	/* queue idle watchers unless io or timers are pending */
690	if (!pendingcnt)	896	if (!pendingcnt)
691	queue_events ((W *)idles, idlecnt, EV_IDLE);	897	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
692		898
693	/* queue check watchers, to be executed first */	899	/* queue check watchers, to be executed first */
694	if (checkcnt)	900	if (checkcnt)
695	queue_events ((W *)checks, checkcnt, EV_CHECK);	901	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
696		902
697	call_pending ();	903	call_pending (EV_A);
698	}	904	}
699	while (!ev_loop_done);	905	while (activecnt && !loop_done);
700		906
701	if (ev_loop_done != 2)	907	if (loop_done != 2)
702	ev_loop_done = 0;	908	loop_done = 0;
		909	}
		910
		911	void
		912	ev_unloop (EV_P_ int how)
		913	{
		914	loop_done = how;
703	}	915	}
704		916
705	/*****************************************************************************/	917	/*****************************************************************************/
706		918
707	static void	919	inline void
708	wlist_add (WL *head, WL elem)	920	wlist_add (WL *head, WL elem)
709	{	921	{
710	elem->next = *head;	922	elem->next = *head;
711	*head = elem;	923	*head = elem;
712	}	924	}
713		925
714	static void	926	inline void
715	wlist_del (WL *head, WL elem)	927	wlist_del (WL *head, WL elem)
716	{	928	{
717	while (*head)	929	while (*head)
718	{	930	{
719	if (*head == elem)	931	if (*head == elem)
…		…
724		936
725	head = &(*head)->next;	937	head = &(*head)->next;
726	}	938	}
727	}	939	}
728		940
729	static void	941	inline void
730	ev_clear (W w)	942	ev_clear_pending (EV_P_ W w)
731	{	943	{
732	if (w->pending)	944	if (w->pending)
733	{	945	{
734	pendings [w->pending - 1].w = 0;	946	pendings [ABSPRI (w)][w->pending - 1].w = 0;
735	w->pending = 0;	947	w->pending = 0;
736	}	948	}
737	}	949	}
738		950
739	static void	951	inline void
740	ev_start (W w, int active)	952	ev_start (EV_P_ W w, int active)
741	{	953	{
		954	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		955	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		956
742	w->active = active;	957	w->active = active;
		958	ev_ref (EV_A);
743	}	959	}
744		960
745	static void	961	inline void
746	ev_stop (W w)	962	ev_stop (EV_P_ W w)
747	{	963	{
		964	ev_unref (EV_A);
748	w->active = 0;	965	w->active = 0;
749	}	966	}
750		967
751	/*****************************************************************************/	968	/*****************************************************************************/
752		969
753	void	970	void
754	ev_io_start (struct ev_io *w)	971	ev_io_start (EV_P_ struct ev_io *w)
755	{	972	{
		973	int fd = w->fd;
		974
756	if (ev_is_active (w))	975	if (ev_is_active (w))
757	return;	976	return;
758		977
759	int fd = w->fd;	978	assert (("ev_io_start called with negative fd", fd >= 0));
760		979
761	ev_start ((W)w, 1);	980	ev_start (EV_A_ (W)w, 1);
762	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	981	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
763	wlist_add ((WL *)&anfds[fd].head, (WL)w);	982	wlist_add ((WL *)&anfds[fd].head, (WL)w);
764		983
765	fd_change (fd);	984	fd_change (EV_A_ fd);
766	}	985	}
767		986
768	void	987	void
769	ev_io_stop (struct ev_io *w)	988	ev_io_stop (EV_P_ struct ev_io *w)
770	{	989	{
771	ev_clear ((W)w);	990	ev_clear_pending (EV_A_ (W)w);
772	if (!ev_is_active (w))	991	if (!ev_is_active (w))
773	return;	992	return;
774		993
775	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	994	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
776	ev_stop ((W)w);	995	ev_stop (EV_A_ (W)w);
777		996
778	fd_change (w->fd);	997	fd_change (EV_A_ w->fd);
779	}	998	}
780		999
781	void	1000	void
782	ev_timer_start (struct ev_timer *w)	1001	ev_timer_start (EV_P_ struct ev_timer *w)
783	{	1002	{
784	if (ev_is_active (w))	1003	if (ev_is_active (w))
785	return;	1004	return;
786		1005
787	w->at += now;	1006	w->at += mn_now;
788		1007
789	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1008	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
790		1009
791	ev_start ((W)w, ++timercnt);	1010	ev_start (EV_A_ (W)w, ++timercnt);
792	array_needsize (timers, timermax, timercnt, );	1011	array_needsize (timers, timermax, timercnt, );
793	timers [timercnt - 1] = w;	1012	timers [timercnt - 1] = w;
794	upheap ((WT *)timers, timercnt - 1);	1013	upheap ((WT *)timers, timercnt - 1);
795	}	1014	}
796		1015
797	void	1016	void
798	ev_timer_stop (struct ev_timer *w)	1017	ev_timer_stop (EV_P_ struct ev_timer *w)
799	{	1018	{
800	ev_clear ((W)w);	1019	ev_clear_pending (EV_A_ (W)w);
801	if (!ev_is_active (w))	1020	if (!ev_is_active (w))
802	return;	1021	return;
803		1022
804	if (w->active < timercnt--)	1023	if (w->active < timercnt--)
805	{	1024	{
…		…
807	downheap ((WT *)timers, timercnt, w->active - 1);	1026	downheap ((WT *)timers, timercnt, w->active - 1);
808	}	1027	}
809		1028
810	w->at = w->repeat;	1029	w->at = w->repeat;
811		1030
812	ev_stop ((W)w);	1031	ev_stop (EV_A_ (W)w);
813	}	1032	}
814		1033
815	void	1034	void
816	ev_timer_again (struct ev_timer *w)	1035	ev_timer_again (EV_P_ struct ev_timer *w)
817	{	1036	{
818	if (ev_is_active (w))	1037	if (ev_is_active (w))
819	{	1038	{
820	if (w->repeat)	1039	if (w->repeat)
821	{	1040	{
822	w->at = now + w->repeat;	1041	w->at = mn_now + w->repeat;
823	downheap ((WT *)timers, timercnt, w->active - 1);	1042	downheap ((WT *)timers, timercnt, w->active - 1);
824	}	1043	}
825	else	1044	else
826	ev_timer_stop (w);	1045	ev_timer_stop (EV_A_ w);
827	}	1046	}
828	else if (w->repeat)	1047	else if (w->repeat)
829	ev_timer_start (w);	1048	ev_timer_start (EV_A_ w);
830	}	1049	}
831		1050
832	void	1051	void
833	ev_periodic_start (struct ev_periodic *w)	1052	ev_periodic_start (EV_P_ struct ev_periodic *w)
834	{	1053	{
835	if (ev_is_active (w))	1054	if (ev_is_active (w))
836	return;	1055	return;
837		1056
838	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1057	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
839		1058
840	/* this formula differs from the one in periodic_reify because we do not always round up */	1059	/* this formula differs from the one in periodic_reify because we do not always round up */
841	if (w->interval)	1060	if (w->interval)
842	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1061	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
843		1062
844	ev_start ((W)w, ++periodiccnt);	1063	ev_start (EV_A_ (W)w, ++periodiccnt);
845	array_needsize (periodics, periodicmax, periodiccnt, );	1064	array_needsize (periodics, periodicmax, periodiccnt, );
846	periodics [periodiccnt - 1] = w;	1065	periodics [periodiccnt - 1] = w;
847	upheap ((WT *)periodics, periodiccnt - 1);	1066	upheap ((WT *)periodics, periodiccnt - 1);
848	}	1067	}
849		1068
850	void	1069	void
851	ev_periodic_stop (struct ev_periodic *w)	1070	ev_periodic_stop (EV_P_ struct ev_periodic *w)
852	{	1071	{
853	ev_clear ((W)w);	1072	ev_clear_pending (EV_A_ (W)w);
854	if (!ev_is_active (w))	1073	if (!ev_is_active (w))
855	return;	1074	return;
856		1075
857	if (w->active < periodiccnt--)	1076	if (w->active < periodiccnt--)
858	{	1077	{
859	periodics [w->active - 1] = periodics [periodiccnt];	1078	periodics [w->active - 1] = periodics [periodiccnt];
860	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1079	downheap ((WT *)periodics, periodiccnt, w->active - 1);
861	}	1080	}
862		1081
863	ev_stop ((W)w);	1082	ev_stop (EV_A_ (W)w);
864	}	1083	}
865		1084
		1085	#ifndef SA_RESTART
		1086	# define SA_RESTART 0
		1087	#endif
		1088
866	void	1089	void
867	ev_signal_start (struct ev_signal *w)	1090	ev_signal_start (EV_P_ struct ev_signal *w)
868	{	1091	{
869	if (ev_is_active (w))	1092	if (ev_is_active (w))
870	return;	1093	return;
871		1094
		1095	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1096
872	ev_start ((W)w, 1);	1097	ev_start (EV_A_ (W)w, 1);
873	array_needsize (signals, signalmax, w->signum, signals_init);	1098	array_needsize (signals, signalmax, w->signum, signals_init);
874	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1099	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
875		1100
876	if (!w->next)	1101	if (!w->next)
877	{	1102	{
878	struct sigaction sa;	1103	struct sigaction sa;
879	sa.sa_handler = sighandler;	1104	sa.sa_handler = sighandler;
880	sigfillset (&sa.sa_mask);	1105	sigfillset (&sa.sa_mask);
881	sa.sa_flags = 0;	1106	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
882	sigaction (w->signum, &sa, 0);	1107	sigaction (w->signum, &sa, 0);
883	}	1108	}
884	}	1109	}
885		1110
886	void	1111	void
887	ev_signal_stop (struct ev_signal *w)	1112	ev_signal_stop (EV_P_ struct ev_signal *w)
888	{	1113	{
889	ev_clear ((W)w);	1114	ev_clear_pending (EV_A_ (W)w);
890	if (!ev_is_active (w))	1115	if (!ev_is_active (w))
891	return;	1116	return;
892		1117
893	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1118	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
894	ev_stop ((W)w);	1119	ev_stop (EV_A_ (W)w);
895		1120
896	if (!signals [w->signum - 1].head)	1121	if (!signals [w->signum - 1].head)
897	signal (w->signum, SIG_DFL);	1122	signal (w->signum, SIG_DFL);
898	}	1123	}
899		1124
900	void	1125	void
901	ev_idle_start (struct ev_idle *w)	1126	ev_idle_start (EV_P_ struct ev_idle *w)
902	{	1127	{
903	if (ev_is_active (w))	1128	if (ev_is_active (w))
904	return;	1129	return;
905		1130
906	ev_start ((W)w, ++idlecnt);	1131	ev_start (EV_A_ (W)w, ++idlecnt);
907	array_needsize (idles, idlemax, idlecnt, );	1132	array_needsize (idles, idlemax, idlecnt, );
908	idles [idlecnt - 1] = w;	1133	idles [idlecnt - 1] = w;
909	}	1134	}
910		1135
911	void	1136	void
912	ev_idle_stop (struct ev_idle *w)	1137	ev_idle_stop (EV_P_ struct ev_idle *w)
913	{	1138	{
914	ev_clear ((W)w);	1139	ev_clear_pending (EV_A_ (W)w);
915	if (ev_is_active (w))	1140	if (ev_is_active (w))
916	return;	1141	return;
917		1142
918	idles [w->active - 1] = idles [--idlecnt];	1143	idles [w->active - 1] = idles [--idlecnt];
919	ev_stop ((W)w);	1144	ev_stop (EV_A_ (W)w);
920	}	1145	}
921		1146
922	void	1147	void
923	ev_prepare_start (struct ev_prepare *w)	1148	ev_prepare_start (EV_P_ struct ev_prepare *w)
924	{	1149	{
925	if (ev_is_active (w))	1150	if (ev_is_active (w))
926	return;	1151	return;
927		1152
928	ev_start ((W)w, ++preparecnt);	1153	ev_start (EV_A_ (W)w, ++preparecnt);
929	array_needsize (prepares, preparemax, preparecnt, );	1154	array_needsize (prepares, preparemax, preparecnt, );
930	prepares [preparecnt - 1] = w;	1155	prepares [preparecnt - 1] = w;
931	}	1156	}
932		1157
933	void	1158	void
934	ev_prepare_stop (struct ev_prepare *w)	1159	ev_prepare_stop (EV_P_ struct ev_prepare *w)
935	{	1160	{
936	ev_clear ((W)w);	1161	ev_clear_pending (EV_A_ (W)w);
937	if (ev_is_active (w))	1162	if (ev_is_active (w))
938	return;	1163	return;
939		1164
940	prepares [w->active - 1] = prepares [--preparecnt];	1165	prepares [w->active - 1] = prepares [--preparecnt];
941	ev_stop ((W)w);	1166	ev_stop (EV_A_ (W)w);
942	}	1167	}
943		1168
944	void	1169	void
945	ev_check_start (struct ev_check *w)	1170	ev_check_start (EV_P_ struct ev_check *w)
946	{	1171	{
947	if (ev_is_active (w))	1172	if (ev_is_active (w))
948	return;	1173	return;
949		1174
950	ev_start ((W)w, ++checkcnt);	1175	ev_start (EV_A_ (W)w, ++checkcnt);
951	array_needsize (checks, checkmax, checkcnt, );	1176	array_needsize (checks, checkmax, checkcnt, );
952	checks [checkcnt - 1] = w;	1177	checks [checkcnt - 1] = w;
953	}	1178	}
954		1179
955	void	1180	void
956	ev_check_stop (struct ev_check *w)	1181	ev_check_stop (EV_P_ struct ev_check *w)
957	{	1182	{
958	ev_clear ((W)w);	1183	ev_clear_pending (EV_A_ (W)w);
959	if (ev_is_active (w))	1184	if (ev_is_active (w))
960	return;	1185	return;
961		1186
962	checks [w->active - 1] = checks [--checkcnt];	1187	checks [w->active - 1] = checks [--checkcnt];
963	ev_stop ((W)w);	1188	ev_stop (EV_A_ (W)w);
964	}	1189	}
965		1190
966	void	1191	void
967	ev_child_start (struct ev_child *w)	1192	ev_child_start (EV_P_ struct ev_child *w)
968	{	1193	{
969	if (ev_is_active (w))	1194	if (ev_is_active (w))
970	return;	1195	return;
971		1196
972	ev_start ((W)w, 1);	1197	ev_start (EV_A_ (W)w, 1);
973	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1198	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
974	}	1199	}
975		1200
976	void	1201	void
977	ev_child_stop (struct ev_child *w)	1202	ev_child_stop (EV_P_ struct ev_child *w)
978	{	1203	{
979	ev_clear ((W)w);	1204	ev_clear_pending (EV_A_ (W)w);
980	if (ev_is_active (w))	1205	if (ev_is_active (w))
981	return;	1206	return;
982		1207
983	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1208	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
984	ev_stop ((W)w);	1209	ev_stop (EV_A_ (W)w);
985	}	1210	}
986		1211
987	/*****************************************************************************/	1212	/*****************************************************************************/
988		1213
989	struct ev_once	1214	struct ev_once
…		…
993	void (cb)(int revents, void arg);	1218	void (cb)(int revents, void arg);
994	void *arg;	1219	void *arg;
995	};	1220	};
996		1221
997	static void	1222	static void
998	once_cb (struct ev_once *once, int revents)	1223	once_cb (EV_P_ struct ev_once *once, int revents)
999	{	1224	{
1000	void (cb)(int revents, void arg) = once->cb;	1225	void (cb)(int revents, void arg) = once->cb;
1001	void *arg = once->arg;	1226	void *arg = once->arg;
1002		1227
1003	ev_io_stop (&once->io);	1228	ev_io_stop (EV_A_ &once->io);
1004	ev_timer_stop (&once->to);	1229	ev_timer_stop (EV_A_ &once->to);
1005	free (once);	1230	free (once);
1006		1231
1007	cb (revents, arg);	1232	cb (revents, arg);
1008	}	1233	}
1009		1234
1010	static void	1235	static void
1011	once_cb_io (struct ev_io *w, int revents)	1236	once_cb_io (EV_P_ struct ev_io *w, int revents)
1012	{	1237	{
1013	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1238	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1014	}	1239	}
1015		1240
1016	static void	1241	static void
1017	once_cb_to (struct ev_timer *w, int revents)	1242	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1018	{	1243	{
1019	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1244	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1020	}	1245	}
1021		1246
1022	void	1247	void
1023	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1248	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1024	{	1249	{
1025	struct ev_once *once = malloc (sizeof (struct ev_once));	1250	struct ev_once *once = malloc (sizeof (struct ev_once));
1026		1251
1027	if (!once)	1252	if (!once)
1028	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1253	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
…		…
1033		1258
1034	ev_watcher_init (&once->io, once_cb_io);	1259	ev_watcher_init (&once->io, once_cb_io);
1035	if (fd >= 0)	1260	if (fd >= 0)
1036	{	1261	{
1037	ev_io_set (&once->io, fd, events);	1262	ev_io_set (&once->io, fd, events);
1038	ev_io_start (&once->io);	1263	ev_io_start (EV_A_ &once->io);
1039	}	1264	}
1040		1265
1041	ev_watcher_init (&once->to, once_cb_to);	1266	ev_watcher_init (&once->to, once_cb_to);
1042	if (timeout >= 0.)	1267	if (timeout >= 0.)
1043	{	1268	{
1044	ev_timer_set (&once->to, timeout, 0.);	1269	ev_timer_set (&once->to, timeout, 0.);
1045	ev_timer_start (&once->to);	1270	ev_timer_start (EV_A_ &once->to);
1046	}	1271	}
1047	}	1272	}
1048	}	1273	}
1049		1274
1050	/*****************************************************************************/	1275	/*****************************************************************************/

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Comparing libev/ev.c (file contents): Revision 1.31 by root, Thu Nov 1 09:05:33 2007 UTC vs. Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.31 by root, Thu Nov 1 09:05:33 2007 UTC vs.
Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC