[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 1.52 by root, Sat Nov 3 22:10:39 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 */	118	static ev_tstamp now_floor, mn_now, diff; /* monotonic clock */
84	ev_tstamp ev_now;	119	static ev_tstamp rt_now;
85	int ev_method;	120	static int method;
86		121
87	static int have_monotonic; /* runtime */	122	static int have_monotonic; /* runtime */
88		123
89	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
90	static void (*method_modify)(int fd, int oev, int nev);	125	static void (*method_modify)(EV_P_ int fd, int oev, int nev);
91	static void (*method_poll)(ev_tstamp timeout);	126	static void (*method_poll)(EV_P_ ev_tstamp timeout);
		127
		128	static int activecnt; /* number of active events */
		129
		130	#if EV_USE_SELECT
		131	static unsigned char vec_ri, vec_ro, vec_wi, vec_wo;
		132	static int vec_max;
		133	#endif
		134
		135	#if EV_USEV_POLL
		136	static struct pollfd *polls;
		137	static int pollmax, pollcnt;
		138	static int pollidxs; / maps fds into structure indices */
		139	static int pollidxmax;
		140	#endif
		141
		142	#if EV_USE_EPOLL
		143	static int epoll_fd = -1;
		144
		145	static struct epoll_event *events;
		146	static int eventmax;
		147	#endif
		148
		149	#if EV_USE_KQUEUE
		150	static int kqueue_fd;
		151	static struct kevent *kqueue_changes;
		152	static int kqueue_changemax, kqueue_changecnt;
		153	static struct kevent *kqueue_events;
		154	static int kqueue_eventmax;
		155	#endif
92		156
93	/*****************************************************************************/	157	/*****************************************************************************/
94		158
95	ev_tstamp	159	inline ev_tstamp
96	ev_time (void)	160	ev_time (void)
97	{	161	{
98	#if EV_USE_REALTIME	162	#if EV_USE_REALTIME
99	struct timespec ts;	163	struct timespec ts;
100	clock_gettime (CLOCK_REALTIME, &ts);	164	clock_gettime (CLOCK_REALTIME, &ts);
…		…
104	gettimeofday (&tv, 0);	168	gettimeofday (&tv, 0);
105	return tv.tv_sec + tv.tv_usec * 1e-6;	169	return tv.tv_sec + tv.tv_usec * 1e-6;
106	#endif	170	#endif
107	}	171	}
108		172
109	static ev_tstamp	173	inline ev_tstamp
110	get_clock (void)	174	get_clock (void)
111	{	175	{
112	#if EV_USE_MONOTONIC	176	#if EV_USE_MONOTONIC
113	if (have_monotonic)	177	if (expect_true (have_monotonic))
114	{	178	{
115	struct timespec ts;	179	struct timespec ts;
116	clock_gettime (CLOCK_MONOTONIC, &ts);	180	clock_gettime (CLOCK_MONOTONIC, &ts);
117	return ts.tv_sec + ts.tv_nsec * 1e-9;	181	return ts.tv_sec + ts.tv_nsec * 1e-9;
118	}	182	}
119	#endif	183	#endif
120		184
121	return ev_time ();	185	return ev_time ();
122	}	186	}
123		187
		188	ev_tstamp
		189	ev_now (EV_P)
		190	{
		191	return rt_now;
		192	}
		193
124	#define array_roundsize(base,n) ((n) \| 4 & ~3)	194	#define array_roundsize(base,n) ((n) \| 4 & ~3)
125		195
126	#define array_needsize(base,cur,cnt,init) \	196	#define array_needsize(base,cur,cnt,init) \
127	if ((cnt) > cur) \	197	if (expect_false ((cnt) > cur)) \
128	{ \	198	{ \
129	int newcnt = cur; \	199	int newcnt = cur; \
130	do \	200	do \
131	{ \	201	{ \
132	newcnt = array_roundsize (base, newcnt << 1); \	202	newcnt = array_roundsize (base, newcnt << 1); \
…		…
140		210
141	/*****************************************************************************/	211	/*****************************************************************************/
142		212
143	typedef struct	213	typedef struct
144	{	214	{
145	struct ev_io *head;	215	struct ev_watcher_list *head;
146	unsigned char events;	216	unsigned char events;
147	unsigned char reify;	217	unsigned char reify;
148	} ANFD;	218	} ANFD;
149		219
150	static ANFD *anfds;	220	static ANFD *anfds;
…		…
167	{	237	{
168	W w;	238	W w;
169	int events;	239	int events;
170	} ANPENDING;	240	} ANPENDING;
171		241
172	static ANPENDING *pendings;	242	static ANPENDING *pendings [NUMPRI];
173	static int pendingmax, pendingcnt;	243	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
174		244
175	static void	245	static void
176	event (W w, int events)	246	event (EV_P_ W w, int events)
177	{	247	{
178	if (w->pending)	248	if (w->pending)
179	{	249	{
180	pendings [w->pending - 1].events \|= events;	250	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
181	return;	251	return;
182	}	252	}
183		253
184	w->pending = ++pendingcnt;	254	w->pending = ++pendingcnt [ABSPRI (w)];
185	array_needsize (pendings, pendingmax, pendingcnt, );	255	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
186	pendings [pendingcnt - 1].w = w;	256	pendings [ABSPRI (w)][w->pending - 1].w = w;
187	pendings [pendingcnt - 1].events = events;	257	pendings [ABSPRI (w)][w->pending - 1].events = events;
188	}	258	}
189		259
190	static void	260	static void
191	queue_events (W *events, int eventcnt, int type)	261	queue_events (EV_P_ W *events, int eventcnt, int type)
192	{	262	{
193	int i;	263	int i;
194		264
195	for (i = 0; i < eventcnt; ++i)	265	for (i = 0; i < eventcnt; ++i)
196	event (events [i], type);	266	event (EV_A_ events [i], type);
197	}	267	}
198		268
199	static void	269	static void
200	fd_event (int fd, int events)	270	fd_event (EV_P_ int fd, int events)
201	{	271	{
202	ANFD *anfd = anfds + fd;	272	ANFD *anfd = anfds + fd;
203	struct ev_io *w;	273	struct ev_io *w;
204		274
205	for (w = anfd->head; w; w = w->next)	275	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
206	{	276	{
207	int ev = w->events & events;	277	int ev = w->events & events;
208		278
209	if (ev)	279	if (ev)
210	event ((W)w, ev);	280	event (EV_A_ (W)w, ev);
211	}	281	}
212	}	282	}
213		283
214	/*****************************************************************************/	284	/*****************************************************************************/
215		285
216	static int *fdchanges;	286	static int *fdchanges;
217	static int fdchangemax, fdchangecnt;	287	static int fdchangemax, fdchangecnt;
218		288
219	static void	289	static void
220	fd_reify (void)	290	fd_reify (EV_P)
221	{	291	{
222	int i;	292	int i;
223		293
224	for (i = 0; i < fdchangecnt; ++i)	294	for (i = 0; i < fdchangecnt; ++i)
225	{	295	{
…		…
227	ANFD *anfd = anfds + fd;	297	ANFD *anfd = anfds + fd;
228	struct ev_io *w;	298	struct ev_io *w;
229		299
230	int events = 0;	300	int events = 0;
231		301
232	for (w = anfd->head; w; w = w->next)	302	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
233	events \|= w->events;	303	events \|= w->events;
234		304
235	anfd->reify = 0;	305	anfd->reify = 0;
236		306
237	if (anfd->events != events)	307	if (anfd->events != events)
238	{	308	{
239	method_modify (fd, anfd->events, events);	309	method_modify (EV_A_ fd, anfd->events, events);
240	anfd->events = events;	310	anfd->events = events;
241	}	311	}
242	}	312	}
243		313
244	fdchangecnt = 0;	314	fdchangecnt = 0;
245	}	315	}
246		316
247	static void	317	static void
248	fd_change (int fd)	318	fd_change (EV_P_ int fd)
249	{	319	{
250	if (anfds [fd].reify \|\| fdchangecnt < 0)	320	if (anfds [fd].reify \|\| fdchangecnt < 0)
251	return;	321	return;
252		322
253	anfds [fd].reify = 1;	323	anfds [fd].reify = 1;
…		…
255	++fdchangecnt;	325	++fdchangecnt;
256	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	326	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
257	fdchanges [fdchangecnt - 1] = fd;	327	fdchanges [fdchangecnt - 1] = fd;
258	}	328	}
259		329
		330	static void
		331	fd_kill (EV_P_ int fd)
		332	{
		333	struct ev_io *w;
		334
		335	while ((w = (struct ev_io *)anfds [fd].head))
		336	{
		337	ev_io_stop (EV_A_ w);
		338	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
		339	}
		340	}
		341
260	/* called on EBADF to verify fds */	342	/* called on EBADF to verify fds */
261	static void	343	static void
262	fd_recheck (void)	344	fd_ebadf (EV_P)
263	{	345	{
264	int fd;	346	int fd;
265		347
266	for (fd = 0; fd < anfdmax; ++fd)	348	for (fd = 0; fd < anfdmax; ++fd)
267	if (anfds [fd].events)	349	if (anfds [fd].events)
268	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	350	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
269	while (anfds [fd].head)	351	fd_kill (EV_A_ fd);
		352	}
		353
		354	/* called on ENOMEM in select/poll to kill some fds and retry */
		355	static void
		356	fd_enomem (EV_P)
		357	{
		358	int fd = anfdmax;
		359
		360	while (fd--)
		361	if (anfds [fd].events)
270	{	362	{
271	ev_io_stop (anfds [fd].head);	363	close (fd);
272	event ((W)anfds [fd].head, EV_ERROR \| EV_READ \| EV_WRITE);	364	fd_kill (EV_A_ fd);
		365	return;
273	}	366	}
274	}	367	}
275		368
276	/*****************************************************************************/	369	/*****************************************************************************/
277		370
278	static struct ev_timer **timers;	371	static struct ev_timer **timers;
…		…
324		417
325	/*****************************************************************************/	418	/*****************************************************************************/
326		419
327	typedef struct	420	typedef struct
328	{	421	{
329	struct ev_signal *head;	422	struct ev_watcher_list *head;
330	sig_atomic_t volatile gotsig;	423	sig_atomic_t volatile gotsig;
331	} ANSIG;	424	} ANSIG;
332		425
333	static ANSIG *signals;	426	static ANSIG *signals;
334	static int signalmax;	427	static int signalmax;
…		…
354	{	447	{
355	signals [signum - 1].gotsig = 1;	448	signals [signum - 1].gotsig = 1;
356		449
357	if (!gotsig)	450	if (!gotsig)
358	{	451	{
		452	int old_errno = errno;
359	gotsig = 1;	453	gotsig = 1;
360	write (sigpipe [1], &signum, 1);	454	write (sigpipe [1], &signum, 1);
		455	errno = old_errno;
361	}	456	}
362	}	457	}
363		458
364	static void	459	static void
365	sigcb (struct ev_io *iow, int revents)	460	sigcb (EV_P_ struct ev_io *iow, int revents)
366	{	461	{
367	struct ev_signal *w;	462	struct ev_watcher_list *w;
368	int sig;	463	int signum;
369		464
370	read (sigpipe [0], &revents, 1);	465	read (sigpipe [0], &revents, 1);
371	gotsig = 0;	466	gotsig = 0;
372		467
373	for (sig = signalmax; sig--; )	468	for (signum = signalmax; signum--; )
374	if (signals [sig].gotsig)	469	if (signals [signum].gotsig)
375	{	470	{
376	signals [sig].gotsig = 0;	471	signals [signum].gotsig = 0;
377		472
378	for (w = signals [sig].head; w; w = w->next)	473	for (w = signals [signum].head; w; w = w->next)
379	event ((W)w, EV_SIGNAL);	474	event (EV_A_ (W)w, EV_SIGNAL);
380	}	475	}
381	}	476	}
382		477
383	static void	478	static void
384	siginit (void)	479	siginit (EV_P)
385	{	480	{
		481	#ifndef WIN32
386	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	482	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
387	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	483	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
388		484
389	/* rather than sort out wether we really need nb, set it */	485	/* rather than sort out wether we really need nb, set it */
390	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	486	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
391	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	487	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		488	#endif
392		489
393	ev_io_set (&sigev, sigpipe [0], EV_READ);	490	ev_io_set (&sigev, sigpipe [0], EV_READ);
394	ev_io_start (&sigev);	491	ev_io_start (&sigev);
		492	ev_unref (EV_A); /* child watcher should not keep loop alive */
395	}	493	}
396		494
397	/*****************************************************************************/	495	/*****************************************************************************/
398		496
399	static struct ev_idle **idles;	497	static struct ev_idle **idles;
…		…
408	/*****************************************************************************/	506	/*****************************************************************************/
409		507
410	static struct ev_child *childs [PID_HASHSIZE];	508	static struct ev_child *childs [PID_HASHSIZE];
411	static struct ev_signal childev;	509	static struct ev_signal childev;
412		510
		511	#ifndef WIN32
		512
413	#ifndef WCONTINUED	513	#ifndef WCONTINUED
414	# define WCONTINUED 0	514	# define WCONTINUED 0
415	#endif	515	#endif
416		516
417	static void	517	static void
418	childcb (struct ev_signal *sw, int revents)	518	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
419	{	519	{
420	struct ev_child *w;	520	struct ev_child *w;
		521
		522	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		523	if (w->pid == pid \|\| !w->pid)
		524	{
		525	w->priority = sw->priority; /* need to do it now */
		526	w->rpid = pid;
		527	w->rstatus = status;
		528	event (EV_A_ (W)w, EV_CHILD);
		529	}
		530	}
		531
		532	static void
		533	childcb (EV_P_ struct ev_signal *sw, int revents)
		534	{
421	int pid, status;	535	int pid, status;
422		536
423	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	537	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
424	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	538	{
425	if (w->pid == pid \|\| w->pid == -1)	539	/* make sure we are called again until all childs have been reaped */
426	{	540	event (EV_A_ (W)sw, EV_SIGNAL);
427	w->status = status;	541
428	event ((W)w, EV_CHILD);	542	child_reap (EV_A_ sw, pid, pid, status);
429	}	543	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		544	}
430	}	545	}
		546
		547	#endif
431		548
432	/*****************************************************************************/	549	/*****************************************************************************/
433		550
		551	#if EV_USE_KQUEUE
		552	# include "ev_kqueue.c"
		553	#endif
434	#if EV_USE_EPOLL	554	#if EV_USE_EPOLL
435	# include "ev_epoll.c"	555	# include "ev_epoll.c"
436	#endif	556	#endif
		557	#if EV_USEV_POLL
		558	# include "ev_poll.c"
		559	#endif
437	#if EV_USE_SELECT	560	#if EV_USE_SELECT
438	# include "ev_select.c"	561	# include "ev_select.c"
439	#endif	562	#endif
440		563
441	int	564	int
…		…
448	ev_version_minor (void)	571	ev_version_minor (void)
449	{	572	{
450	return EV_VERSION_MINOR;	573	return EV_VERSION_MINOR;
451	}	574	}
452		575
453	int ev_init (int flags)	576	/* return true if we are running with elevated privileges and should ignore env variables */
		577	static int
		578	enable_secure (void)
454	{	579	{
		580	#ifdef WIN32
		581	return 0;
		582	#else
		583	return getuid () != geteuid ()
		584	\|\| getgid () != getegid ();
		585	#endif
		586	}
		587
		588	int
		589	ev_method (EV_P)
		590	{
		591	return method;
		592	}
		593
		594	int
		595	ev_init (EV_P_ int methods)
		596	{
455	if (!ev_method)	597	if (!method)
456	{	598	{
457	#if EV_USE_MONOTONIC	599	#if EV_USE_MONOTONIC
458	{	600	{
459	struct timespec ts;	601	struct timespec ts;
460	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	602	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
461	have_monotonic = 1;	603	have_monotonic = 1;
462	}	604	}
463	#endif	605	#endif
464		606
465	ev_now = ev_time ();	607	rt_now = ev_time ();
466	now = get_clock ();	608	mn_now = get_clock ();
		609	now_floor = mn_now;
467	diff = ev_now - now;	610	diff = rt_now - mn_now;
468		611
469	if (pipe (sigpipe))	612	if (pipe (sigpipe))
470	return 0;	613	return 0;
471		614
		615	if (methods == EVMETHOD_AUTO)
		616	if (!enable_secure () && getenv ("LIBmethodS"))
		617	methods = atoi (getenv ("LIBmethodS"));
		618	else
472	ev_method = EVMETHOD_NONE;	619	methods = EVMETHOD_ANY;
		620
		621	method = 0;
		622	#if EV_USE_KQUEUE
		623	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		624	#endif
473	#if EV_USE_EPOLL	625	#if EV_USE_EPOLL
474	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	626	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
		627	#endif
		628	#if EV_USEV_POLL
		629	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
475	#endif	630	#endif
476	#if EV_USE_SELECT	631	#if EV_USE_SELECT
477	if (ev_method == EVMETHOD_NONE) select_init (flags);	632	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
478	#endif	633	#endif
479		634
480	if (ev_method)	635	if (method)
481	{	636	{
482	ev_watcher_init (&sigev, sigcb);	637	ev_watcher_init (&sigev, sigcb);
		638	ev_set_priority (&sigev, EV_MAXPRI);
483	siginit ();	639	siginit (EV_A);
484		640
		641	#ifndef WIN32
485	ev_signal_init (&childev, childcb, SIGCHLD);	642	ev_signal_init (&childev, childcb, SIGCHLD);
		643	ev_set_priority (&childev, EV_MAXPRI);
486	ev_signal_start (&childev);	644	ev_signal_start (EV_A_ &childev);
		645	ev_unref (EV_A); /* child watcher should not keep loop alive */
		646	#endif
487	}	647	}
488	}	648	}
489		649
490	return ev_method;	650	return method;
491	}	651	}
492		652
493	/*****************************************************************************/	653	/*****************************************************************************/
494		654
495	void	655	void
…		…
506		666
507	void	667	void
508	ev_fork_child (void)	668	ev_fork_child (void)
509	{	669	{
510	#if EV_USE_EPOLL	670	#if EV_USE_EPOLL
511	if (ev_method == EVMETHOD_EPOLL)	671	if (method == EVMETHOD_EPOLL)
512	epoll_postfork_child ();	672	epoll_postfork_child ();
513	#endif	673	#endif
514		674
515	ev_io_stop (&sigev);	675	ev_io_stop (&sigev);
516	close (sigpipe [0]);	676	close (sigpipe [0]);
…		…
520	}	680	}
521		681
522	/*****************************************************************************/	682	/*****************************************************************************/
523		683
524	static void	684	static void
525	call_pending (void)	685	call_pending (EV_P)
526	{	686	{
		687	int pri;
		688
		689	for (pri = NUMPRI; pri--; )
527	while (pendingcnt)	690	while (pendingcnt [pri])
528	{	691	{
529	ANPENDING *p = pendings + --pendingcnt;	692	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
530		693
531	if (p->w)	694	if (p->w)
532	{	695	{
533	p->w->pending = 0;	696	p->w->pending = 0;
534	p->w->cb (p->w, p->events);	697	p->w->cb (EV_A_ p->w, p->events);
535	}	698	}
536	}	699	}
537	}	700	}
538		701
539	static void	702	static void
540	timers_reify (void)	703	timers_reify (EV_P)
541	{	704	{
542	while (timercnt && timers [0]->at <= now)	705	while (timercnt && timers [0]->at <= mn_now)
543	{	706	{
544	struct ev_timer *w = timers [0];	707	struct ev_timer *w = timers [0];
545		708
546	/* first reschedule or stop timer */	709	/* first reschedule or stop timer */
547	if (w->repeat)	710	if (w->repeat)
548	{	711	{
549	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	712	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
550	w->at = now + w->repeat;	713	w->at = mn_now + w->repeat;
551	downheap ((WT *)timers, timercnt, 0);	714	downheap ((WT *)timers, timercnt, 0);
552	}	715	}
553	else	716	else
554	ev_timer_stop (w); /* nonrepeating: stop timer */	717	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
555		718
556	event ((W)w, EV_TIMEOUT);	719	event ((W)w, EV_TIMEOUT);
557	}	720	}
558	}	721	}
559		722
560	static void	723	static void
561	periodics_reify (void)	724	periodics_reify (EV_P)
562	{	725	{
563	while (periodiccnt && periodics [0]->at <= ev_now)	726	while (periodiccnt && periodics [0]->at <= rt_now)
564	{	727	{
565	struct ev_periodic *w = periodics [0];	728	struct ev_periodic *w = periodics [0];
566		729
567	/* first reschedule or stop timer */	730	/* first reschedule or stop timer */
568	if (w->interval)	731	if (w->interval)
569	{	732	{
570	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	733	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));	734	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
572	downheap ((WT *)periodics, periodiccnt, 0);	735	downheap ((WT *)periodics, periodiccnt, 0);
573	}	736	}
574	else	737	else
575	ev_periodic_stop (w); /* nonrepeating: stop timer */	738	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
576		739
577	event ((W)w, EV_PERIODIC);	740	event (EV_A_ (W)w, EV_PERIODIC);
578	}	741	}
579	}	742	}
580		743
581	static void	744	static void
582	periodics_reschedule (ev_tstamp diff)	745	periodics_reschedule (EV_P_ ev_tstamp diff)
583	{	746	{
584	int i;	747	int i;
585		748
586	/* adjust periodics after time jump */	749	/* adjust periodics after time jump */
587	for (i = 0; i < periodiccnt; ++i)	750	for (i = 0; i < periodiccnt; ++i)
588	{	751	{
589	struct ev_periodic *w = periodics [i];	752	struct ev_periodic *w = periodics [i];
590		753
591	if (w->interval)	754	if (w->interval)
592	{	755	{
593	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	756	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
594		757
595	if (fabs (diff) >= 1e-4)	758	if (fabs (diff) >= 1e-4)
596	{	759	{
597	ev_periodic_stop (w);	760	ev_periodic_stop (EV_A_ w);
598	ev_periodic_start (w);	761	ev_periodic_start (EV_A_ w);
599		762
600	i = 0; /* restart loop, inefficient, but time jumps should be rare */	763	i = 0; /* restart loop, inefficient, but time jumps should be rare */
601	}	764	}
602	}	765	}
603	}	766	}
604	}	767	}
605		768
		769	inline int
		770	time_update_monotonic (EV_P)
		771	{
		772	mn_now = get_clock ();
		773
		774	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		775	{
		776	rt_now = mn_now + diff;
		777	return 0;
		778	}
		779	else
		780	{
		781	now_floor = mn_now;
		782	rt_now = ev_time ();
		783	return 1;
		784	}
		785	}
		786
606	static void	787	static void
607	time_update (void)	788	time_update (EV_P)
608	{	789	{
609	int i;	790	int i;
610		791
611	ev_now = ev_time ();	792	#if EV_USE_MONOTONIC
612
613	if (have_monotonic)	793	if (expect_true (have_monotonic))
614	{	794	{
615	ev_tstamp odiff = diff;	795	if (time_update_monotonic (EV_A))
616
617	for (i = 4; --i; ) /* loop a few times, before making important decisions */
618	{	796	{
619	now = get_clock ();	797	ev_tstamp odiff = diff;
		798
		799	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		800	{
620	diff = ev_now - now;	801	diff = rt_now - mn_now;
621		802
622	if (fabs (odiff - diff) < MIN_TIMEJUMP)	803	if (fabs (odiff - diff) < MIN_TIMEJUMP)
623	return; /* all is well */	804	return; /* all is well */
624		805
625	ev_now = ev_time ();	806	rt_now = ev_time ();
		807	mn_now = get_clock ();
		808	now_floor = mn_now;
		809	}
		810
		811	periodics_reschedule (EV_A_ diff - odiff);
		812	/* no timer adjustment, as the monotonic clock doesn't jump */
626	}	813	}
627
628	periodics_reschedule (diff - odiff);
629	/* no timer adjustment, as the monotonic clock doesn't jump */
630	}	814	}
631	else	815	else
		816	#endif
632	{	817	{
633	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)	818	rt_now = ev_time ();
		819
		820	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
634	{	821	{
635	periodics_reschedule (ev_now - now);	822	periodics_reschedule (EV_A_ rt_now - mn_now);
636		823
637	/* adjust timers. this is easy, as the offset is the same for all */	824	/* adjust timers. this is easy, as the offset is the same for all */
638	for (i = 0; i < timercnt; ++i)	825	for (i = 0; i < timercnt; ++i)
639	timers [i]->at += diff;	826	timers [i]->at += diff;
640	}	827	}
641		828
642	now = ev_now;	829	mn_now = rt_now;
643	}	830	}
644	}	831	}
645		832
646	int ev_loop_done;	833	void
		834	ev_ref (EV_P)
		835	{
		836	++activecnt;
		837	}
647		838
		839	void
		840	ev_unref (EV_P)
		841	{
		842	--activecnt;
		843	}
		844
		845	static int loop_done;
		846
		847	void
648	void ev_loop (int flags)	848	ev_loop (EV_P_ int flags)
649	{	849	{
650	double block;	850	double block;
651	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	851	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
652		852
653	do	853	do
654	{	854	{
655	/* queue check watchers (and execute them) */	855	/* queue check watchers (and execute them) */
656	if (preparecnt)	856	if (expect_false (preparecnt))
657	{	857	{
658	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	858	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
659	call_pending ();	859	call_pending (EV_A);
660	}	860	}
661		861
662	/* update fd-related kernel structures */	862	/* update fd-related kernel structures */
663	fd_reify ();	863	fd_reify (EV_A);
664		864
665	/* calculate blocking time */	865	/* calculate blocking time */
666		866
667	/* we only need this for !monotonic clockor timers, but as we basically	867	/* we only need this for !monotonic clockor timers, but as we basically
668	always have timers, we just calculate it always */	868	always have timers, we just calculate it always */
		869	#if EV_USE_MONOTONIC
		870	if (expect_true (have_monotonic))
		871	time_update_monotonic (EV_A);
		872	else
		873	#endif
		874	{
669	ev_now = ev_time ();	875	rt_now = ev_time ();
		876	mn_now = rt_now;
		877	}
670		878
671	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	879	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
672	block = 0.;	880	block = 0.;
673	else	881	else
674	{	882	{
675	block = MAX_BLOCKTIME;	883	block = MAX_BLOCKTIME;
676		884
677	if (timercnt)	885	if (timercnt)
678	{	886	{
679	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	887	ev_tstamp to = timers [0]->at - mn_now + method_fudge;
680	if (block > to) block = to;	888	if (block > to) block = to;
681	}	889	}
682		890
683	if (periodiccnt)	891	if (periodiccnt)
684	{	892	{
685	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	893	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
686	if (block > to) block = to;	894	if (block > to) block = to;
687	}	895	}
688		896
689	if (block < 0.) block = 0.;	897	if (block < 0.) block = 0.;
690	}	898	}
691		899
692	method_poll (block);	900	method_poll (EV_A_ block);
693		901
694	/* update ev_now, do magic */	902	/* update rt_now, do magic */
695	time_update ();	903	time_update (EV_A);
696		904
697	/* queue pending timers and reschedule them */	905	/* queue pending timers and reschedule them */
698	timers_reify (); /* relative timers called last */	906	timers_reify (EV_A); /* relative timers called last */
699	periodics_reify (); /* absolute timers called first */	907	periodics_reify (EV_A); /* absolute timers called first */
700		908
701	/* queue idle watchers unless io or timers are pending */	909	/* queue idle watchers unless io or timers are pending */
702	if (!pendingcnt)	910	if (!pendingcnt)
703	queue_events ((W *)idles, idlecnt, EV_IDLE);	911	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
704		912
705	/* queue check watchers, to be executed first */	913	/* queue check watchers, to be executed first */
706	if (checkcnt)	914	if (checkcnt)
707	queue_events ((W *)checks, checkcnt, EV_CHECK);	915	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
708		916
709	call_pending ();	917	call_pending (EV_A);
710	}	918	}
711	while (!ev_loop_done);	919	while (activecnt && !loop_done);
712		920
713	if (ev_loop_done != 2)	921	if (loop_done != 2)
714	ev_loop_done = 0;	922	loop_done = 0;
		923	}
		924
		925	void
		926	ev_unloop (EV_P_ int how)
		927	{
		928	loop_done = how;
715	}	929	}
716		930
717	/*****************************************************************************/	931	/*****************************************************************************/
718		932
719	static void	933	inline void
720	wlist_add (WL *head, WL elem)	934	wlist_add (WL *head, WL elem)
721	{	935	{
722	elem->next = *head;	936	elem->next = *head;
723	*head = elem;	937	*head = elem;
724	}	938	}
725		939
726	static void	940	inline void
727	wlist_del (WL *head, WL elem)	941	wlist_del (WL *head, WL elem)
728	{	942	{
729	while (*head)	943	while (*head)
730	{	944	{
731	if (*head == elem)	945	if (*head == elem)
…		…
736		950
737	head = &(*head)->next;	951	head = &(*head)->next;
738	}	952	}
739	}	953	}
740		954
741	static void	955	inline void
742	ev_clear_pending (W w)	956	ev_clear_pending (EV_P_ W w)
743	{	957	{
744	if (w->pending)	958	if (w->pending)
745	{	959	{
746	pendings [w->pending - 1].w = 0;	960	pendings [ABSPRI (w)][w->pending - 1].w = 0;
747	w->pending = 0;	961	w->pending = 0;
748	}	962	}
749	}	963	}
750		964
751	static void	965	inline void
752	ev_start (W w, int active)	966	ev_start (EV_P_ W w, int active)
753	{	967	{
		968	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		969	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		970
754	w->active = active;	971	w->active = active;
		972	ev_ref (EV_A);
755	}	973	}
756		974
757	static void	975	inline void
758	ev_stop (W w)	976	ev_stop (EV_P_ W w)
759	{	977	{
		978	ev_unref (EV_A);
760	w->active = 0;	979	w->active = 0;
761	}	980	}
762		981
763	/*****************************************************************************/	982	/*****************************************************************************/
764		983
765	void	984	void
766	ev_io_start (struct ev_io *w)	985	ev_io_start (EV_P_ struct ev_io *w)
767	{	986	{
		987	int fd = w->fd;
		988
768	if (ev_is_active (w))	989	if (ev_is_active (w))
769	return;	990	return;
770		991
771	int fd = w->fd;
772
773	assert (("ev_io_start called with negative fd", fd >= 0));	992	assert (("ev_io_start called with negative fd", fd >= 0));
774		993
775	ev_start ((W)w, 1);	994	ev_start (EV_A_ (W)w, 1);
776	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	995	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
777	wlist_add ((WL *)&anfds[fd].head, (WL)w);	996	wlist_add ((WL *)&anfds[fd].head, (WL)w);
778		997
779	fd_change (fd);	998	fd_change (EV_A_ fd);
780	}	999	}
781		1000
782	void	1001	void
783	ev_io_stop (struct ev_io *w)	1002	ev_io_stop (EV_P_ struct ev_io *w)
784	{	1003	{
785	ev_clear_pending ((W)w);	1004	ev_clear_pending (EV_A_ (W)w);
786	if (!ev_is_active (w))	1005	if (!ev_is_active (w))
787	return;	1006	return;
788		1007
789	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1008	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
790	ev_stop ((W)w);	1009	ev_stop (EV_A_ (W)w);
791		1010
792	fd_change (w->fd);	1011	fd_change (EV_A_ w->fd);
793	}	1012	}
794		1013
795	void	1014	void
796	ev_timer_start (struct ev_timer *w)	1015	ev_timer_start (EV_P_ struct ev_timer *w)
797	{	1016	{
798	if (ev_is_active (w))	1017	if (ev_is_active (w))
799	return;	1018	return;
800		1019
801	w->at += now;	1020	w->at += mn_now;
802		1021
803	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1022	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
804		1023
805	ev_start ((W)w, ++timercnt);	1024	ev_start (EV_A_ (W)w, ++timercnt);
806	array_needsize (timers, timermax, timercnt, );	1025	array_needsize (timers, timermax, timercnt, );
807	timers [timercnt - 1] = w;	1026	timers [timercnt - 1] = w;
808	upheap ((WT *)timers, timercnt - 1);	1027	upheap ((WT *)timers, timercnt - 1);
809	}	1028	}
810		1029
811	void	1030	void
812	ev_timer_stop (struct ev_timer *w)	1031	ev_timer_stop (EV_P_ struct ev_timer *w)
813	{	1032	{
814	ev_clear_pending ((W)w);	1033	ev_clear_pending (EV_A_ (W)w);
815	if (!ev_is_active (w))	1034	if (!ev_is_active (w))
816	return;	1035	return;
817		1036
818	if (w->active < timercnt--)	1037	if (w->active < timercnt--)
819	{	1038	{
…		…
821	downheap ((WT *)timers, timercnt, w->active - 1);	1040	downheap ((WT *)timers, timercnt, w->active - 1);
822	}	1041	}
823		1042
824	w->at = w->repeat;	1043	w->at = w->repeat;
825		1044
826	ev_stop ((W)w);	1045	ev_stop (EV_A_ (W)w);
827	}	1046	}
828		1047
829	void	1048	void
830	ev_timer_again (struct ev_timer *w)	1049	ev_timer_again (EV_P_ struct ev_timer *w)
831	{	1050	{
832	if (ev_is_active (w))	1051	if (ev_is_active (w))
833	{	1052	{
834	if (w->repeat)	1053	if (w->repeat)
835	{	1054	{
836	w->at = now + w->repeat;	1055	w->at = mn_now + w->repeat;
837	downheap ((WT *)timers, timercnt, w->active - 1);	1056	downheap ((WT *)timers, timercnt, w->active - 1);
838	}	1057	}
839	else	1058	else
840	ev_timer_stop (w);	1059	ev_timer_stop (EV_A_ w);
841	}	1060	}
842	else if (w->repeat)	1061	else if (w->repeat)
843	ev_timer_start (w);	1062	ev_timer_start (EV_A_ w);
844	}	1063	}
845		1064
846	void	1065	void
847	ev_periodic_start (struct ev_periodic *w)	1066	ev_periodic_start (EV_P_ struct ev_periodic *w)
848	{	1067	{
849	if (ev_is_active (w))	1068	if (ev_is_active (w))
850	return;	1069	return;
851		1070
852	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1071	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
853		1072
854	/* this formula differs from the one in periodic_reify because we do not always round up */	1073	/* this formula differs from the one in periodic_reify because we do not always round up */
855	if (w->interval)	1074	if (w->interval)
856	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1075	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
857		1076
858	ev_start ((W)w, ++periodiccnt);	1077	ev_start (EV_A_ (W)w, ++periodiccnt);
859	array_needsize (periodics, periodicmax, periodiccnt, );	1078	array_needsize (periodics, periodicmax, periodiccnt, );
860	periodics [periodiccnt - 1] = w;	1079	periodics [periodiccnt - 1] = w;
861	upheap ((WT *)periodics, periodiccnt - 1);	1080	upheap ((WT *)periodics, periodiccnt - 1);
862	}	1081	}
863		1082
864	void	1083	void
865	ev_periodic_stop (struct ev_periodic *w)	1084	ev_periodic_stop (EV_P_ struct ev_periodic *w)
866	{	1085	{
867	ev_clear_pending ((W)w);	1086	ev_clear_pending (EV_A_ (W)w);
868	if (!ev_is_active (w))	1087	if (!ev_is_active (w))
869	return;	1088	return;
870		1089
871	if (w->active < periodiccnt--)	1090	if (w->active < periodiccnt--)
872	{	1091	{
873	periodics [w->active - 1] = periodics [periodiccnt];	1092	periodics [w->active - 1] = periodics [periodiccnt];
874	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1093	downheap ((WT *)periodics, periodiccnt, w->active - 1);
875	}	1094	}
876		1095
877	ev_stop ((W)w);	1096	ev_stop (EV_A_ (W)w);
878	}	1097	}
879		1098
		1099	#ifndef SA_RESTART
		1100	# define SA_RESTART 0
		1101	#endif
		1102
880	void	1103	void
881	ev_signal_start (struct ev_signal *w)	1104	ev_signal_start (EV_P_ struct ev_signal *w)
882	{	1105	{
883	if (ev_is_active (w))	1106	if (ev_is_active (w))
884	return;	1107	return;
885		1108
886	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1109	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
887		1110
888	ev_start ((W)w, 1);	1111	ev_start (EV_A_ (W)w, 1);
889	array_needsize (signals, signalmax, w->signum, signals_init);	1112	array_needsize (signals, signalmax, w->signum, signals_init);
890	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1113	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
891		1114
892	if (!w->next)	1115	if (!w->next)
893	{	1116	{
894	struct sigaction sa;	1117	struct sigaction sa;
895	sa.sa_handler = sighandler;	1118	sa.sa_handler = sighandler;
896	sigfillset (&sa.sa_mask);	1119	sigfillset (&sa.sa_mask);
897	sa.sa_flags = 0;	1120	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
898	sigaction (w->signum, &sa, 0);	1121	sigaction (w->signum, &sa, 0);
899	}	1122	}
900	}	1123	}
901		1124
902	void	1125	void
903	ev_signal_stop (struct ev_signal *w)	1126	ev_signal_stop (EV_P_ struct ev_signal *w)
904	{	1127	{
905	ev_clear_pending ((W)w);	1128	ev_clear_pending (EV_A_ (W)w);
906	if (!ev_is_active (w))	1129	if (!ev_is_active (w))
907	return;	1130	return;
908		1131
909	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1132	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
910	ev_stop ((W)w);	1133	ev_stop (EV_A_ (W)w);
911		1134
912	if (!signals [w->signum - 1].head)	1135	if (!signals [w->signum - 1].head)
913	signal (w->signum, SIG_DFL);	1136	signal (w->signum, SIG_DFL);
914	}	1137	}
915		1138
916	void	1139	void
917	ev_idle_start (struct ev_idle *w)	1140	ev_idle_start (EV_P_ struct ev_idle *w)
918	{	1141	{
919	if (ev_is_active (w))	1142	if (ev_is_active (w))
920	return;	1143	return;
921		1144
922	ev_start ((W)w, ++idlecnt);	1145	ev_start (EV_A_ (W)w, ++idlecnt);
923	array_needsize (idles, idlemax, idlecnt, );	1146	array_needsize (idles, idlemax, idlecnt, );
924	idles [idlecnt - 1] = w;	1147	idles [idlecnt - 1] = w;
925	}	1148	}
926		1149
927	void	1150	void
928	ev_idle_stop (struct ev_idle *w)	1151	ev_idle_stop (EV_P_ struct ev_idle *w)
929	{	1152	{
930	ev_clear_pending ((W)w);	1153	ev_clear_pending (EV_A_ (W)w);
931	if (ev_is_active (w))	1154	if (ev_is_active (w))
932	return;	1155	return;
933		1156
934	idles [w->active - 1] = idles [--idlecnt];	1157	idles [w->active - 1] = idles [--idlecnt];
935	ev_stop ((W)w);	1158	ev_stop (EV_A_ (W)w);
936	}	1159	}
937		1160
938	void	1161	void
939	ev_prepare_start (struct ev_prepare *w)	1162	ev_prepare_start (EV_P_ struct ev_prepare *w)
940	{	1163	{
941	if (ev_is_active (w))	1164	if (ev_is_active (w))
942	return;	1165	return;
943		1166
944	ev_start ((W)w, ++preparecnt);	1167	ev_start (EV_A_ (W)w, ++preparecnt);
945	array_needsize (prepares, preparemax, preparecnt, );	1168	array_needsize (prepares, preparemax, preparecnt, );
946	prepares [preparecnt - 1] = w;	1169	prepares [preparecnt - 1] = w;
947	}	1170	}
948		1171
949	void	1172	void
950	ev_prepare_stop (struct ev_prepare *w)	1173	ev_prepare_stop (EV_P_ struct ev_prepare *w)
951	{	1174	{
952	ev_clear_pending ((W)w);	1175	ev_clear_pending (EV_A_ (W)w);
953	if (ev_is_active (w))	1176	if (ev_is_active (w))
954	return;	1177	return;
955		1178
956	prepares [w->active - 1] = prepares [--preparecnt];	1179	prepares [w->active - 1] = prepares [--preparecnt];
957	ev_stop ((W)w);	1180	ev_stop (EV_A_ (W)w);
958	}	1181	}
959		1182
960	void	1183	void
961	ev_check_start (struct ev_check *w)	1184	ev_check_start (EV_P_ struct ev_check *w)
962	{	1185	{
963	if (ev_is_active (w))	1186	if (ev_is_active (w))
964	return;	1187	return;
965		1188
966	ev_start ((W)w, ++checkcnt);	1189	ev_start (EV_A_ (W)w, ++checkcnt);
967	array_needsize (checks, checkmax, checkcnt, );	1190	array_needsize (checks, checkmax, checkcnt, );
968	checks [checkcnt - 1] = w;	1191	checks [checkcnt - 1] = w;
969	}	1192	}
970		1193
971	void	1194	void
972	ev_check_stop (struct ev_check *w)	1195	ev_check_stop (EV_P_ struct ev_check *w)
973	{	1196	{
974	ev_clear_pending ((W)w);	1197	ev_clear_pending (EV_A_ (W)w);
975	if (ev_is_active (w))	1198	if (ev_is_active (w))
976	return;	1199	return;
977		1200
978	checks [w->active - 1] = checks [--checkcnt];	1201	checks [w->active - 1] = checks [--checkcnt];
979	ev_stop ((W)w);	1202	ev_stop (EV_A_ (W)w);
980	}	1203	}
981		1204
982	void	1205	void
983	ev_child_start (struct ev_child *w)	1206	ev_child_start (EV_P_ struct ev_child *w)
984	{	1207	{
985	if (ev_is_active (w))	1208	if (ev_is_active (w))
986	return;	1209	return;
987		1210
988	ev_start ((W)w, 1);	1211	ev_start (EV_A_ (W)w, 1);
989	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1212	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
990	}	1213	}
991		1214
992	void	1215	void
993	ev_child_stop (struct ev_child *w)	1216	ev_child_stop (EV_P_ struct ev_child *w)
994	{	1217	{
995	ev_clear_pending ((W)w);	1218	ev_clear_pending (EV_A_ (W)w);
996	if (ev_is_active (w))	1219	if (ev_is_active (w))
997	return;	1220	return;
998		1221
999	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1222	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1000	ev_stop ((W)w);	1223	ev_stop (EV_A_ (W)w);
1001	}	1224	}
1002		1225
1003	/*****************************************************************************/	1226	/*****************************************************************************/
1004		1227
1005	struct ev_once	1228	struct ev_once
…		…
1009	void (cb)(int revents, void arg);	1232	void (cb)(int revents, void arg);
1010	void *arg;	1233	void *arg;
1011	};	1234	};
1012		1235
1013	static void	1236	static void
1014	once_cb (struct ev_once *once, int revents)	1237	once_cb (EV_P_ struct ev_once *once, int revents)
1015	{	1238	{
1016	void (cb)(int revents, void arg) = once->cb;	1239	void (cb)(int revents, void arg) = once->cb;
1017	void *arg = once->arg;	1240	void *arg = once->arg;
1018		1241
1019	ev_io_stop (&once->io);	1242	ev_io_stop (EV_A_ &once->io);
1020	ev_timer_stop (&once->to);	1243	ev_timer_stop (EV_A_ &once->to);
1021	free (once);	1244	free (once);
1022		1245
1023	cb (revents, arg);	1246	cb (revents, arg);
1024	}	1247	}
1025		1248
1026	static void	1249	static void
1027	once_cb_io (struct ev_io *w, int revents)	1250	once_cb_io (EV_P_ struct ev_io *w, int revents)
1028	{	1251	{
1029	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1252	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1030	}	1253	}
1031		1254
1032	static void	1255	static void
1033	once_cb_to (struct ev_timer *w, int revents)	1256	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1034	{	1257	{
1035	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1258	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1036	}	1259	}
1037		1260
1038	void	1261	void
1039	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1262	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1040	{	1263	{
1041	struct ev_once *once = malloc (sizeof (struct ev_once));	1264	struct ev_once *once = malloc (sizeof (struct ev_once));
1042		1265
1043	if (!once)	1266	if (!once)
1044	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1267	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
…		…
1049		1272
1050	ev_watcher_init (&once->io, once_cb_io);	1273	ev_watcher_init (&once->io, once_cb_io);
1051	if (fd >= 0)	1274	if (fd >= 0)
1052	{	1275	{
1053	ev_io_set (&once->io, fd, events);	1276	ev_io_set (&once->io, fd, events);
1054	ev_io_start (&once->io);	1277	ev_io_start (EV_A_ &once->io);
1055	}	1278	}
1056		1279
1057	ev_watcher_init (&once->to, once_cb_to);	1280	ev_watcher_init (&once->to, once_cb_to);
1058	if (timeout >= 0.)	1281	if (timeout >= 0.)
1059	{	1282	{
1060	ev_timer_set (&once->to, timeout, 0.);	1283	ev_timer_set (&once->to, timeout, 0.);
1061	ev_timer_start (&once->to);	1284	ev_timer_start (EV_A_ &once->to);
1062	}	1285	}
1063	}	1286	}
1064	}	1287	}
1065		1288
1066	/*****************************************************************************/	1289	/*****************************************************************************/

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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 1.52 by root, Sat Nov 3 22:10:39 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 1.52 by root, Sat Nov 3 22:10:39 2007 UTC