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

Comparing libev/ev.c (file contents):
Revision 1.36 by root, Thu Nov 1 13:11:11 2007 UTC vs.
Revision 1.53 by root, Sat Nov 3 22:31:11 2007 UTC

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

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Comparing libev/ev.c (file contents): Revision 1.36 by root, Thu Nov 1 13:11:11 2007 UTC vs. Revision 1.53 by root, Sat Nov 3 22:31:11 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.36 by root, Thu Nov 1 13:11:11 2007 UTC vs.
Revision 1.53 by root, Sat Nov 3 22:31:11 2007 UTC