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

Comparing libev/ev.c (file contents):
Revision 1.40 by root, Fri Nov 2 11:02:23 2007 UTC vs.
Revision 1.56 by root, Sun Nov 4 15:58:49 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
51	/**/	53	/**/
52		54
…		…
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
		69	#endif
		70
		71	#ifndef EV_USE_KQUEUE
		72	# define EV_USE_KQUEUE 0
63	#endif	73	#endif
64		74
65	#ifndef EV_USE_REALTIME	75	#ifndef EV_USE_REALTIME
66	# define EV_USE_REALTIME 1	76	# define EV_USE_REALTIME 1
67	#endif	77	#endif
…		…
96	#endif	106	#endif
97		107
98	#define expect_false(expr) expect ((expr) != 0, 0)	108	#define expect_false(expr) expect ((expr) != 0, 0)
99	#define expect_true(expr) expect ((expr) != 0, 1)	109	#define expect_true(expr) expect ((expr) != 0, 1)
100		110
		111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
		113
101	typedef struct ev_watcher *W;	114	typedef struct ev_watcher *W;
102	typedef struct ev_watcher_list *WL;	115	typedef struct ev_watcher_list *WL;
103	typedef struct ev_watcher_time *WT;	116	typedef struct ev_watcher_time *WT;
104		117
105	static ev_tstamp now_floor, now, diff; /* monotonic clock */	118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
106	ev_tstamp ev_now;
107	int ev_method;
108
109	static int have_monotonic; /* runtime */
110
111	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
112	static void (*method_modify)(int fd, int oev, int nev);
113	static void (*method_poll)(ev_tstamp timeout);
114		119
115	/*****************************************************************************/	120	/*****************************************************************************/
116		121
117	ev_tstamp	122	typedef struct
		123	{
		124	struct ev_watcher_list *head;
		125	unsigned char events;
		126	unsigned char reify;
		127	} ANFD;
		128
		129	typedef struct
		130	{
		131	W w;
		132	int events;
		133	} ANPENDING;
		134
		135	#if EV_MULTIPLICITY
		136
		137	struct ev_loop
		138	{
		139	# define VAR(name,decl) decl;
		140	# include "ev_vars.h"
		141	};
		142	# undef VAR
		143	# include "ev_wrap.h"
		144
		145	#else
		146
		147	# define VAR(name,decl) static decl;
		148	# include "ev_vars.h"
		149	# undef VAR
		150
		151	#endif
		152
		153	/*****************************************************************************/
		154
		155	inline ev_tstamp
118	ev_time (void)	156	ev_time (void)
119	{	157	{
120	#if EV_USE_REALTIME	158	#if EV_USE_REALTIME
121	struct timespec ts;	159	struct timespec ts;
122	clock_gettime (CLOCK_REALTIME, &ts);	160	clock_gettime (CLOCK_REALTIME, &ts);
…		…
126	gettimeofday (&tv, 0);	164	gettimeofday (&tv, 0);
127	return tv.tv_sec + tv.tv_usec * 1e-6;	165	return tv.tv_sec + tv.tv_usec * 1e-6;
128	#endif	166	#endif
129	}	167	}
130		168
131	static ev_tstamp	169	inline ev_tstamp
132	get_clock (void)	170	get_clock (void)
133	{	171	{
134	#if EV_USE_MONOTONIC	172	#if EV_USE_MONOTONIC
135	if (expect_true (have_monotonic))	173	if (expect_true (have_monotonic))
136	{	174	{
…		…
139	return ts.tv_sec + ts.tv_nsec * 1e-9;	177	return ts.tv_sec + ts.tv_nsec * 1e-9;
140	}	178	}
141	#endif	179	#endif
142		180
143	return ev_time ();	181	return ev_time ();
		182	}
		183
		184	ev_tstamp
		185	ev_now (EV_P)
		186	{
		187	return rt_now;
144	}	188	}
145		189
146	#define array_roundsize(base,n) ((n) \| 4 & ~3)	190	#define array_roundsize(base,n) ((n) \| 4 & ~3)
147		191
148	#define array_needsize(base,cur,cnt,init) \	192	#define array_needsize(base,cur,cnt,init) \
…		…
160	cur = newcnt; \	204	cur = newcnt; \
161	}	205	}
162		206
163	/*****************************************************************************/	207	/*****************************************************************************/
164		208
165	typedef struct
166	{
167	struct ev_io *head;
168	unsigned char events;
169	unsigned char reify;
170	} ANFD;
171
172	static ANFD *anfds;
173	static int anfdmax;
174
175	static void	209	static void
176	anfds_init (ANFD *base, int count)	210	anfds_init (ANFD *base, int count)
177	{	211	{
178	while (count--)	212	while (count--)
179	{	213	{
…		…
183		217
184	++base;	218	++base;
185	}	219	}
186	}	220	}
187		221
188	typedef struct
189	{
190	W w;
191	int events;
192	} ANPENDING;
193
194	static ANPENDING *pendings;
195	static int pendingmax, pendingcnt;
196
197	static void	222	static void
198	event (W w, int events)	223	event (EV_P_ W w, int events)
199	{	224	{
200	if (w->pending)	225	if (w->pending)
201	{	226	{
202	pendings [w->pending - 1].events \|= events;	227	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
203	return;	228	return;
204	}	229	}
205		230
206	w->pending = ++pendingcnt;	231	w->pending = ++pendingcnt [ABSPRI (w)];
207	array_needsize (pendings, pendingmax, pendingcnt, );	232	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
208	pendings [pendingcnt - 1].w = w;	233	pendings [ABSPRI (w)][w->pending - 1].w = w;
209	pendings [pendingcnt - 1].events = events;	234	pendings [ABSPRI (w)][w->pending - 1].events = events;
210	}	235	}
211		236
212	static void	237	static void
213	queue_events (W *events, int eventcnt, int type)	238	queue_events (EV_P_ W *events, int eventcnt, int type)
214	{	239	{
215	int i;	240	int i;
216		241
217	for (i = 0; i < eventcnt; ++i)	242	for (i = 0; i < eventcnt; ++i)
218	event (events [i], type);	243	event (EV_A_ events [i], type);
219	}	244	}
220		245
221	static void	246	static void
222	fd_event (int fd, int events)	247	fd_event (EV_P_ int fd, int events)
223	{	248	{
224	ANFD *anfd = anfds + fd;	249	ANFD *anfd = anfds + fd;
225	struct ev_io *w;	250	struct ev_io *w;
226		251
227	for (w = anfd->head; w; w = w->next)	252	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
228	{	253	{
229	int ev = w->events & events;	254	int ev = w->events & events;
230		255
231	if (ev)	256	if (ev)
232	event ((W)w, ev);	257	event (EV_A_ (W)w, ev);
233	}	258	}
234	}	259	}
235		260
236	/*****************************************************************************/	261	/*****************************************************************************/
237		262
238	static int *fdchanges;
239	static int fdchangemax, fdchangecnt;
240
241	static void	263	static void
242	fd_reify (void)	264	fd_reify (EV_P)
243	{	265	{
244	int i;	266	int i;
245		267
246	for (i = 0; i < fdchangecnt; ++i)	268	for (i = 0; i < fdchangecnt; ++i)
247	{	269	{
…		…
249	ANFD *anfd = anfds + fd;	271	ANFD *anfd = anfds + fd;
250	struct ev_io *w;	272	struct ev_io *w;
251		273
252	int events = 0;	274	int events = 0;
253		275
254	for (w = anfd->head; w; w = w->next)	276	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
255	events \|= w->events;	277	events \|= w->events;
256		278
257	anfd->reify = 0;	279	anfd->reify = 0;
258		280
259	if (anfd->events != events)	281	if (anfd->events != events)
260	{	282	{
261	method_modify (fd, anfd->events, events);	283	method_modify (EV_A_ fd, anfd->events, events);
262	anfd->events = events;	284	anfd->events = events;
263	}	285	}
264	}	286	}
265		287
266	fdchangecnt = 0;	288	fdchangecnt = 0;
267	}	289	}
268		290
269	static void	291	static void
270	fd_change (int fd)	292	fd_change (EV_P_ int fd)
271	{	293	{
272	if (anfds [fd].reify \|\| fdchangecnt < 0)	294	if (anfds [fd].reify \|\| fdchangecnt < 0)
273	return;	295	return;
274		296
275	anfds [fd].reify = 1;	297	anfds [fd].reify = 1;
…		…
277	++fdchangecnt;	299	++fdchangecnt;
278	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
279	fdchanges [fdchangecnt - 1] = fd;	301	fdchanges [fdchangecnt - 1] = fd;
280	}	302	}
281		303
		304	static void
		305	fd_kill (EV_P_ int fd)
		306	{
		307	struct ev_io *w;
		308
		309	while ((w = (struct ev_io *)anfds [fd].head))
		310	{
		311	ev_io_stop (EV_A_ w);
		312	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
		313	}
		314	}
		315
282	/* called on EBADF to verify fds */	316	/* called on EBADF to verify fds */
283	static void	317	static void
284	fd_recheck (void)	318	fd_ebadf (EV_P)
285	{	319	{
286	int fd;	320	int fd;
287		321
288	for (fd = 0; fd < anfdmax; ++fd)	322	for (fd = 0; fd < anfdmax; ++fd)
289	if (anfds [fd].events)	323	if (anfds [fd].events)
290	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
291	while (anfds [fd].head)	325	fd_kill (EV_A_ fd);
		326	}
		327
		328	/* called on ENOMEM in select/poll to kill some fds and retry */
		329	static void
		330	fd_enomem (EV_P)
		331	{
		332	int fd = anfdmax;
		333
		334	while (fd--)
		335	if (anfds [fd].events)
292	{	336	{
293	ev_io_stop (anfds [fd].head);	337	close (fd);
294	event ((W)anfds [fd].head, EV_ERROR \| EV_READ \| EV_WRITE);	338	fd_kill (EV_A_ fd);
		339	return;
295	}	340	}
		341	}
		342
		343	/* susually called after fork if method needs to re-arm all fds from scratch */
		344	static void
		345	fd_rearm_all (EV_P)
		346	{
		347	int fd;
		348
		349	/* this should be highly optimised to not do anything but set a flag */
		350	for (fd = 0; fd < anfdmax; ++fd)
		351	if (anfds [fd].events)
		352	{
		353	anfds [fd].events = 0;
		354	fd_change (fd);
		355	}
296	}	356	}
297		357
298	/*****************************************************************************/	358	/*****************************************************************************/
299		359
300	static struct ev_timer **timers;
301	static int timermax, timercnt;
302
303	static struct ev_periodic **periodics;
304	static int periodicmax, periodiccnt;
305
306	static void	360	static void
307	upheap (WT *timers, int k)	361	upheap (WT *heap, int k)
308	{	362	{
309	WT w = timers [k];	363	WT w = heap [k];
310		364
311	while (k && timers [k >> 1]->at > w->at)	365	while (k && heap [k >> 1]->at > w->at)
312	{	366	{
313	timers [k] = timers [k >> 1];	367	heap [k] = heap [k >> 1];
314	timers [k]->active = k + 1;	368	heap [k]->active = k + 1;
315	k >>= 1;	369	k >>= 1;
316	}	370	}
317		371
318	timers [k] = w;	372	heap [k] = w;
319	timers [k]->active = k + 1;	373	heap [k]->active = k + 1;
320		374
321	}	375	}
322		376
323	static void	377	static void
324	downheap (WT *timers, int N, int k)	378	downheap (WT *heap, int N, int k)
325	{	379	{
326	WT w = timers [k];	380	WT w = heap [k];
327		381
328	while (k < (N >> 1))	382	while (k < (N >> 1))
329	{	383	{
330	int j = k << 1;	384	int j = k << 1;
331		385
332	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	386	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
333	++j;	387	++j;
334		388
335	if (w->at <= timers [j]->at)	389	if (w->at <= heap [j]->at)
336	break;	390	break;
337		391
338	timers [k] = timers [j];	392	heap [k] = heap [j];
339	timers [k]->active = k + 1;	393	heap [k]->active = k + 1;
340	k = j;	394	k = j;
341	}	395	}
342		396
343	timers [k] = w;	397	heap [k] = w;
344	timers [k]->active = k + 1;	398	heap [k]->active = k + 1;
345	}	399	}
346		400
347	/*****************************************************************************/	401	/*****************************************************************************/
348		402
349	typedef struct	403	typedef struct
350	{	404	{
351	struct ev_signal *head;	405	struct ev_watcher_list *head;
352	sig_atomic_t volatile gotsig;	406	sig_atomic_t volatile gotsig;
353	} ANSIG;	407	} ANSIG;
354		408
355	static ANSIG *signals;	409	static ANSIG *signals;
356	static int signalmax;	410	static int signalmax;
357		411
358	static int sigpipe [2];	412	static int sigpipe [2];
359	static sig_atomic_t volatile gotsig;	413	static sig_atomic_t volatile gotsig;
360	static struct ev_io sigev;
361		414
362	static void	415	static void
363	signals_init (ANSIG *base, int count)	416	signals_init (ANSIG *base, int count)
364	{	417	{
365	while (count--)	418	while (count--)
…		…
376	{	429	{
377	signals [signum - 1].gotsig = 1;	430	signals [signum - 1].gotsig = 1;
378		431
379	if (!gotsig)	432	if (!gotsig)
380	{	433	{
		434	int old_errno = errno;
381	gotsig = 1;	435	gotsig = 1;
382	write (sigpipe [1], &signum, 1);	436	write (sigpipe [1], &signum, 1);
		437	errno = old_errno;
383	}	438	}
384	}	439	}
385		440
386	static void	441	static void
387	sigcb (struct ev_io *iow, int revents)	442	sigcb (EV_P_ struct ev_io *iow, int revents)
388	{	443	{
389	struct ev_signal *w;	444	struct ev_watcher_list *w;
390	int signum;	445	int signum;
391		446
392	read (sigpipe [0], &revents, 1);	447	read (sigpipe [0], &revents, 1);
393	gotsig = 0;	448	gotsig = 0;
394		449
…		…
396	if (signals [signum].gotsig)	451	if (signals [signum].gotsig)
397	{	452	{
398	signals [signum].gotsig = 0;	453	signals [signum].gotsig = 0;
399		454
400	for (w = signals [signum].head; w; w = w->next)	455	for (w = signals [signum].head; w; w = w->next)
401	event ((W)w, EV_SIGNAL);	456	event (EV_A_ (W)w, EV_SIGNAL);
402	}	457	}
403	}	458	}
404		459
405	static void	460	static void
406	siginit (void)	461	siginit (EV_P)
407	{	462	{
		463	#ifndef WIN32
408	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	464	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
409	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	465	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
410		466
411	/* rather than sort out wether we really need nb, set it */	467	/* rather than sort out wether we really need nb, set it */
412	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	468	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
413	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	469	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		470	#endif
414		471
415	ev_io_set (&sigev, sigpipe [0], EV_READ);	472	ev_io_set (&sigev, sigpipe [0], EV_READ);
416	ev_io_start (&sigev);	473	ev_io_start (EV_A_ &sigev);
		474	ev_unref (EV_A); /* child watcher should not keep loop alive */
417	}	475	}
418		476
419	/*****************************************************************************/	477	/*****************************************************************************/
420		478
421	static struct ev_idle **idles;	479	#ifndef WIN32
422	static int idlemax, idlecnt;
423
424	static struct ev_prepare **prepares;
425	static int preparemax, preparecnt;
426
427	static struct ev_check **checks;
428	static int checkmax, checkcnt;
429
430	/*****************************************************************************/
431
432	static struct ev_child *childs [PID_HASHSIZE];
433	static struct ev_signal childev;
434		480
435	#ifndef WCONTINUED	481	#ifndef WCONTINUED
436	# define WCONTINUED 0	482	# define WCONTINUED 0
437	#endif	483	#endif
438		484
439	static void	485	static void
440	childcb (struct ev_signal *sw, int revents)	486	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
441	{	487	{
442	struct ev_child *w;	488	struct ev_child *w;
		489
		490	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		491	if (w->pid == pid \|\| !w->pid)
		492	{
		493	w->priority = sw->priority; /* need to do it now */
		494	w->rpid = pid;
		495	w->rstatus = status;
		496	event (EV_A_ (W)w, EV_CHILD);
		497	}
		498	}
		499
		500	static void
		501	childcb (EV_P_ struct ev_signal *sw, int revents)
		502	{
443	int pid, status;	503	int pid, status;
444		504
445	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	505	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
446	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	506	{
447	if (w->pid == pid \|\| !w->pid)	507	/* make sure we are called again until all childs have been reaped */
448	{	508	event (EV_A_ (W)sw, EV_SIGNAL);
449	w->status = status;	509
450	event ((W)w, EV_CHILD);	510	child_reap (EV_A_ sw, pid, pid, status);
451	}	511	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		512	}
452	}	513	}
		514
		515	#endif
453		516
454	/*****************************************************************************/	517	/*****************************************************************************/
455		518
		519	#if EV_USE_KQUEUE
		520	# include "ev_kqueue.c"
		521	#endif
456	#if EV_USE_EPOLL	522	#if EV_USE_EPOLL
457	# include "ev_epoll.c"	523	# include "ev_epoll.c"
458	#endif	524	#endif
		525	#if EV_USEV_POLL
		526	# include "ev_poll.c"
		527	#endif
459	#if EV_USE_SELECT	528	#if EV_USE_SELECT
460	# include "ev_select.c"	529	# include "ev_select.c"
461	#endif	530	#endif
462		531
463	int	532	int
…		…
470	ev_version_minor (void)	539	ev_version_minor (void)
471	{	540	{
472	return EV_VERSION_MINOR;	541	return EV_VERSION_MINOR;
473	}	542	}
474		543
475	int ev_init (int flags)	544	/* return true if we are running with elevated privileges and should ignore env variables */
		545	static int
		546	enable_secure (void)
476	{	547	{
		548	#ifdef WIN32
		549	return 0;
		550	#else
		551	return getuid () != geteuid ()
		552	\|\| getgid () != getegid ();
		553	#endif
		554	}
		555
		556	int
		557	ev_method (EV_P)
		558	{
		559	return method;
		560	}
		561
		562	static void
		563	loop_init (EV_P_ int methods)
		564	{
477	if (!ev_method)	565	if (!method)
478	{	566	{
479	#if EV_USE_MONOTONIC	567	#if EV_USE_MONOTONIC
480	{	568	{
481	struct timespec ts;	569	struct timespec ts;
482	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	570	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
483	have_monotonic = 1;	571	have_monotonic = 1;
484	}	572	}
485	#endif	573	#endif
486		574
487	ev_now = ev_time ();	575	rt_now = ev_time ();
488	now = get_clock ();	576	mn_now = get_clock ();
489	now_floor = now;	577	now_floor = mn_now;
490	diff = ev_now - now;	578	rtmn_diff = rt_now - mn_now;
491		579
492	if (pipe (sigpipe))	580	if (methods == EVMETHOD_AUTO)
493	return 0;	581	if (!enable_secure () && getenv ("LIBEV_METHODS"))
494		582	methods = atoi (getenv ("LIBEV_METHODS"));
		583	else
495	ev_method = EVMETHOD_NONE;	584	methods = EVMETHOD_ANY;
		585
		586	method = 0;
		587	#if EV_USE_KQUEUE
		588	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		589	#endif
496	#if EV_USE_EPOLL	590	#if EV_USE_EPOLL
497	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	591	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
		592	#endif
		593	#if EV_USEV_POLL
		594	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
498	#endif	595	#endif
499	#if EV_USE_SELECT	596	#if EV_USE_SELECT
500	if (ev_method == EVMETHOD_NONE) select_init (flags);	597	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
501	#endif	598	#endif
		599	}
		600	}
502		601
		602	void
		603	loop_destroy (EV_P)
		604	{
		605	#if EV_USE_KQUEUE
		606	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		607	#endif
		608	#if EV_USE_EPOLL
		609	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		610	#endif
		611	#if EV_USEV_POLL
		612	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		613	#endif
		614	#if EV_USE_SELECT
		615	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		616	#endif
		617
		618	method = 0;
		619	/TODO/
		620	}
		621
		622	void
		623	loop_fork (EV_P)
		624	{
		625	/TODO/
		626	#if EV_USE_EPOLL
		627	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		628	#endif
		629	#if EV_USE_KQUEUE
		630	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		631	#endif
		632	}
		633
		634	#if EV_MULTIPLICITY
		635	struct ev_loop *
		636	ev_loop_new (int methods)
		637	{
		638	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));
		639
		640	loop_init (EV_A_ methods);
		641
		642	if (ev_methods (EV_A))
		643	return loop;
		644
		645	return 0;
		646	}
		647
		648	void
		649	ev_loop_destroy (EV_P)
		650	{
		651	loop_destroy (EV_A);
		652	free (loop);
		653	}
		654
		655	void
		656	ev_loop_fork (EV_P)
		657	{
		658	loop_fork (EV_A);
		659	}
		660
		661	#endif
		662
		663	#if EV_MULTIPLICITY
		664	struct ev_loop default_loop_struct;
		665	static struct ev_loop *default_loop;
		666
		667	struct ev_loop *
		668	#else
		669	static int default_loop;
		670
		671	int
		672	#endif
		673	ev_default_loop (int methods)
		674	{
		675	if (sigpipe [0] == sigpipe [1])
		676	if (pipe (sigpipe))
		677	return 0;
		678
		679	if (!default_loop)
		680	{
		681	#if EV_MULTIPLICITY
		682	struct ev_loop *loop = default_loop = &default_loop_struct;
		683	#else
		684	default_loop = 1;
		685	#endif
		686
		687	loop_init (EV_A_ methods);
		688
503	if (ev_method)	689	if (ev_method (EV_A))
504	{	690	{
505	ev_watcher_init (&sigev, sigcb);	691	ev_watcher_init (&sigev, sigcb);
		692	ev_set_priority (&sigev, EV_MAXPRI);
506	siginit ();	693	siginit (EV_A);
507		694
		695	#ifndef WIN32
508	ev_signal_init (&childev, childcb, SIGCHLD);	696	ev_signal_init (&childev, childcb, SIGCHLD);
		697	ev_set_priority (&childev, EV_MAXPRI);
509	ev_signal_start (&childev);	698	ev_signal_start (EV_A_ &childev);
		699	ev_unref (EV_A); /* child watcher should not keep loop alive */
		700	#endif
510	}	701	}
		702	else
		703	default_loop = 0;
511	}	704	}
512		705
513	return ev_method;	706	return default_loop;
514	}	707	}
515		708
516	/*****************************************************************************/
517
518	void	709	void
519	ev_fork_prepare (void)	710	ev_default_destroy (void)
520	{	711	{
521	/* nop */	712	struct ev_loop *loop = default_loop;
522	}
523		713
524	void	714	ev_ref (EV_A); /* child watcher */
525	ev_fork_parent (void)	715	ev_signal_stop (EV_A_ &childev);
526	{
527	/* nop */
528	}
529		716
530	void	717	ev_ref (EV_A); /* signal watcher */
531	ev_fork_child (void)
532	{
533	#if EV_USE_EPOLL
534	if (ev_method == EVMETHOD_EPOLL)
535	epoll_postfork_child ();
536	#endif
537
538	ev_io_stop (&sigev);	718	ev_io_stop (EV_A_ &sigev);
		719
		720	close (sigpipe [0]); sigpipe [0] = 0;
		721	close (sigpipe [1]); sigpipe [1] = 0;
		722
		723	loop_destroy (EV_A);
		724	}
		725
		726	void
		727	ev_default_fork (EV_P)
		728	{
		729	loop_fork (EV_A);
		730
		731	ev_io_stop (EV_A_ &sigev);
539	close (sigpipe [0]);	732	close (sigpipe [0]);
540	close (sigpipe [1]);	733	close (sigpipe [1]);
541	pipe (sigpipe);	734	pipe (sigpipe);
		735
		736	ev_ref (EV_A); /* signal watcher */
542	siginit ();	737	siginit (EV_A);
543	}	738	}
544		739
545	/*****************************************************************************/	740	/*****************************************************************************/
546		741
547	static void	742	static void
548	call_pending (void)	743	call_pending (EV_P)
549	{	744	{
		745	int pri;
		746
		747	for (pri = NUMPRI; pri--; )
550	while (pendingcnt)	748	while (pendingcnt [pri])
551	{	749	{
552	ANPENDING *p = pendings + --pendingcnt;	750	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
553		751
554	if (p->w)	752	if (p->w)
555	{	753	{
556	p->w->pending = 0;	754	p->w->pending = 0;
557	p->w->cb (p->w, p->events);	755	p->w->cb (EV_A_ p->w, p->events);
558	}	756	}
559	}	757	}
560	}	758	}
561		759
562	static void	760	static void
563	timers_reify (void)	761	timers_reify (EV_P)
564	{	762	{
565	while (timercnt && timers [0]->at <= now)	763	while (timercnt && timers [0]->at <= mn_now)
566	{	764	{
567	struct ev_timer *w = timers [0];	765	struct ev_timer *w = timers [0];
568		766
569	/* first reschedule or stop timer */	767	/* first reschedule or stop timer */
570	if (w->repeat)	768	if (w->repeat)
571	{	769	{
572	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	770	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
573	w->at = now + w->repeat;	771	w->at = mn_now + w->repeat;
574	downheap ((WT *)timers, timercnt, 0);	772	downheap ((WT *)timers, timercnt, 0);
575	}	773	}
576	else	774	else
577	ev_timer_stop (w); /* nonrepeating: stop timer */	775	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
578		776
579	event ((W)w, EV_TIMEOUT);	777	event (EV_A_ (W)w, EV_TIMEOUT);
580	}	778	}
581	}	779	}
582		780
583	static void	781	static void
584	periodics_reify (void)	782	periodics_reify (EV_P)
585	{	783	{
586	while (periodiccnt && periodics [0]->at <= ev_now)	784	while (periodiccnt && periodics [0]->at <= rt_now)
587	{	785	{
588	struct ev_periodic *w = periodics [0];	786	struct ev_periodic *w = periodics [0];
589		787
590	/* first reschedule or stop timer */	788	/* first reschedule or stop timer */
591	if (w->interval)	789	if (w->interval)
592	{	790	{
593	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	791	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;
594	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	792	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
595	downheap ((WT *)periodics, periodiccnt, 0);	793	downheap ((WT *)periodics, periodiccnt, 0);
596	}	794	}
597	else	795	else
598	ev_periodic_stop (w); /* nonrepeating: stop timer */	796	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
599		797
600	event ((W)w, EV_PERIODIC);	798	event (EV_A_ (W)w, EV_PERIODIC);
601	}	799	}
602	}	800	}
603		801
604	static void	802	static void
605	periodics_reschedule (ev_tstamp diff)	803	periodics_reschedule (EV_P)
606	{	804	{
607	int i;	805	int i;
608		806
609	/* adjust periodics after time jump */	807	/* adjust periodics after time jump */
610	for (i = 0; i < periodiccnt; ++i)	808	for (i = 0; i < periodiccnt; ++i)
611	{	809	{
612	struct ev_periodic *w = periodics [i];	810	struct ev_periodic *w = periodics [i];
613		811
614	if (w->interval)	812	if (w->interval)
615	{	813	{
616	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	814	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
617		815
618	if (fabs (diff) >= 1e-4)	816	if (fabs (diff) >= 1e-4)
619	{	817	{
620	ev_periodic_stop (w);	818	ev_periodic_stop (EV_A_ w);
621	ev_periodic_start (w);	819	ev_periodic_start (EV_A_ w);
622		820
623	i = 0; /* restart loop, inefficient, but time jumps should be rare */	821	i = 0; /* restart loop, inefficient, but time jumps should be rare */
624	}	822	}
625	}	823	}
626	}	824	}
627	}	825	}
628		826
629	static int	827	inline int
630	time_update_monotonic (void)	828	time_update_monotonic (EV_P)
631	{	829	{
632	now = get_clock ();	830	mn_now = get_clock ();
633		831
634	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	832	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
635	{	833	{
636	ev_now = now + diff;	834	rt_now = rtmn_diff + mn_now;
637	return 0;	835	return 0;
638	}	836	}
639	else	837	else
640	{	838	{
641	now_floor = now;	839	now_floor = mn_now;
642	ev_now = ev_time ();	840	rt_now = ev_time ();
643	return 1;	841	return 1;
644	}	842	}
645	}	843	}
646		844
647	static void	845	static void
648	time_update (void)	846	time_update (EV_P)
649	{	847	{
650	int i;	848	int i;
651		849
652	#if EV_USE_MONOTONIC	850	#if EV_USE_MONOTONIC
653	if (expect_true (have_monotonic))	851	if (expect_true (have_monotonic))
654	{	852	{
655	if (time_update_monotonic ())	853	if (time_update_monotonic (EV_A))
656	{	854	{
657	ev_tstamp odiff = diff;	855	ev_tstamp odiff = rtmn_diff;
658		856
659	for (i = 4; --i; ) /* loop a few times, before making important decisions */	857	for (i = 4; --i; ) /* loop a few times, before making important decisions */
660	{	858	{
661	diff = ev_now - now;	859	rtmn_diff = rt_now - mn_now;
662		860
663	if (fabs (odiff - diff) < MIN_TIMEJUMP)	861	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
664	return; /* all is well */	862	return; /* all is well */
665		863
666	ev_now = ev_time ();	864	rt_now = ev_time ();
667	now = get_clock ();	865	mn_now = get_clock ();
668	now_floor = now;	866	now_floor = mn_now;
669	}	867	}
670		868
671	periodics_reschedule (diff - odiff);	869	periodics_reschedule (EV_A);
672	/* no timer adjustment, as the monotonic clock doesn't jump */	870	/* no timer adjustment, as the monotonic clock doesn't jump */
		871	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
673	}	872	}
674	}	873	}
675	else	874	else
676	#endif	875	#endif
677	{	876	{
678	ev_now = ev_time ();	877	rt_now = ev_time ();
679		878
680	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	879	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
681	{	880	{
682	periodics_reschedule (ev_now - now);	881	periodics_reschedule (EV_A);
683		882
684	/* adjust timers. this is easy, as the offset is the same for all */	883	/* adjust timers. this is easy, as the offset is the same for all */
685	for (i = 0; i < timercnt; ++i)	884	for (i = 0; i < timercnt; ++i)
686	timers [i]->at += diff;	885	timers [i]->at += rt_now - mn_now;
687	}	886	}
688		887
689	now = ev_now;	888	mn_now = rt_now;
690	}	889	}
691	}	890	}
692		891
693	int ev_loop_done;	892	void
		893	ev_ref (EV_P)
		894	{
		895	++activecnt;
		896	}
694		897
		898	void
		899	ev_unref (EV_P)
		900	{
		901	--activecnt;
		902	}
		903
		904	static int loop_done;
		905
		906	void
695	void ev_loop (int flags)	907	ev_loop (EV_P_ int flags)
696	{	908	{
697	double block;	909	double block;
698	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	910	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
699		911
700	do	912	do
701	{	913	{
702	/* queue check watchers (and execute them) */	914	/* queue check watchers (and execute them) */
703	if (expect_false (preparecnt))	915	if (expect_false (preparecnt))
704	{	916	{
705	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	917	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
706	call_pending ();	918	call_pending (EV_A);
707	}	919	}
708		920
709	/* update fd-related kernel structures */	921	/* update fd-related kernel structures */
710	fd_reify ();	922	fd_reify (EV_A);
711		923
712	/* calculate blocking time */	924	/* calculate blocking time */
713		925
714	/* we only need this for !monotonic clockor timers, but as we basically	926	/* we only need this for !monotonic clockor timers, but as we basically
715	always have timers, we just calculate it always */	927	always have timers, we just calculate it always */
716	#if EV_USE_MONOTONIC	928	#if EV_USE_MONOTONIC
717	if (expect_true (have_monotonic))	929	if (expect_true (have_monotonic))
718	time_update_monotonic ();	930	time_update_monotonic (EV_A);
719	else	931	else
720	#endif	932	#endif
721	{	933	{
722	ev_now = ev_time ();	934	rt_now = ev_time ();
723	now = ev_now;	935	mn_now = rt_now;
724	}	936	}
725		937
726	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	938	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
727	block = 0.;	939	block = 0.;
728	else	940	else
729	{	941	{
730	block = MAX_BLOCKTIME;	942	block = MAX_BLOCKTIME;
731		943
732	if (timercnt)	944	if (timercnt)
733	{	945	{
734	ev_tstamp to = timers [0]->at - now + method_fudge;	946	ev_tstamp to = timers [0]->at - mn_now + method_fudge;
735	if (block > to) block = to;	947	if (block > to) block = to;
736	}	948	}
737		949
738	if (periodiccnt)	950	if (periodiccnt)
739	{	951	{
740	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	952	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
741	if (block > to) block = to;	953	if (block > to) block = to;
742	}	954	}
743		955
744	if (block < 0.) block = 0.;	956	if (block < 0.) block = 0.;
745	}	957	}
746		958
747	method_poll (block);	959	method_poll (EV_A_ block);
748		960
749	/* update ev_now, do magic */	961	/* update rt_now, do magic */
750	time_update ();	962	time_update (EV_A);
751		963
752	/* queue pending timers and reschedule them */	964	/* queue pending timers and reschedule them */
753	timers_reify (); /* relative timers called last */	965	timers_reify (EV_A); /* relative timers called last */
754	periodics_reify (); /* absolute timers called first */	966	periodics_reify (EV_A); /* absolute timers called first */
755		967
756	/* queue idle watchers unless io or timers are pending */	968	/* queue idle watchers unless io or timers are pending */
757	if (!pendingcnt)	969	if (!pendingcnt)
758	queue_events ((W *)idles, idlecnt, EV_IDLE);	970	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
759		971
760	/* queue check watchers, to be executed first */	972	/* queue check watchers, to be executed first */
761	if (checkcnt)	973	if (checkcnt)
762	queue_events ((W *)checks, checkcnt, EV_CHECK);	974	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
763		975
764	call_pending ();	976	call_pending (EV_A);
765	}	977	}
766	while (!ev_loop_done);	978	while (activecnt && !loop_done);
767		979
768	if (ev_loop_done != 2)	980	if (loop_done != 2)
769	ev_loop_done = 0;	981	loop_done = 0;
		982	}
		983
		984	void
		985	ev_unloop (EV_P_ int how)
		986	{
		987	loop_done = how;
770	}	988	}
771		989
772	/*****************************************************************************/	990	/*****************************************************************************/
773		991
774	static void	992	inline void
775	wlist_add (WL *head, WL elem)	993	wlist_add (WL *head, WL elem)
776	{	994	{
777	elem->next = *head;	995	elem->next = *head;
778	*head = elem;	996	*head = elem;
779	}	997	}
780		998
781	static void	999	inline void
782	wlist_del (WL *head, WL elem)	1000	wlist_del (WL *head, WL elem)
783	{	1001	{
784	while (*head)	1002	while (*head)
785	{	1003	{
786	if (*head == elem)	1004	if (*head == elem)
…		…
791		1009
792	head = &(*head)->next;	1010	head = &(*head)->next;
793	}	1011	}
794	}	1012	}
795		1013
796	static void	1014	inline void
797	ev_clear_pending (W w)	1015	ev_clear_pending (EV_P_ W w)
798	{	1016	{
799	if (w->pending)	1017	if (w->pending)
800	{	1018	{
801	pendings [w->pending - 1].w = 0;	1019	pendings [ABSPRI (w)][w->pending - 1].w = 0;
802	w->pending = 0;	1020	w->pending = 0;
803	}	1021	}
804	}	1022	}
805		1023
806	static void	1024	inline void
807	ev_start (W w, int active)	1025	ev_start (EV_P_ W w, int active)
808	{	1026	{
		1027	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1028	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1029
809	w->active = active;	1030	w->active = active;
		1031	ev_ref (EV_A);
810	}	1032	}
811		1033
812	static void	1034	inline void
813	ev_stop (W w)	1035	ev_stop (EV_P_ W w)
814	{	1036	{
		1037	ev_unref (EV_A);
815	w->active = 0;	1038	w->active = 0;
816	}	1039	}
817		1040
818	/*****************************************************************************/	1041	/*****************************************************************************/
819		1042
820	void	1043	void
821	ev_io_start (struct ev_io *w)	1044	ev_io_start (EV_P_ struct ev_io *w)
822	{	1045	{
823	int fd = w->fd;	1046	int fd = w->fd;
824		1047
825	if (ev_is_active (w))	1048	if (ev_is_active (w))
826	return;	1049	return;
827		1050
828	assert (("ev_io_start called with negative fd", fd >= 0));	1051	assert (("ev_io_start called with negative fd", fd >= 0));
829		1052
830	ev_start ((W)w, 1);	1053	ev_start (EV_A_ (W)w, 1);
831	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1054	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
832	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1055	wlist_add ((WL *)&anfds[fd].head, (WL)w);
833		1056
834	fd_change (fd);	1057	fd_change (EV_A_ fd);
835	}	1058	}
836		1059
837	void	1060	void
838	ev_io_stop (struct ev_io *w)	1061	ev_io_stop (EV_P_ struct ev_io *w)
839	{	1062	{
840	ev_clear_pending ((W)w);	1063	ev_clear_pending (EV_A_ (W)w);
841	if (!ev_is_active (w))	1064	if (!ev_is_active (w))
842	return;	1065	return;
843		1066
844	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1067	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
845	ev_stop ((W)w);	1068	ev_stop (EV_A_ (W)w);
846		1069
847	fd_change (w->fd);	1070	fd_change (EV_A_ w->fd);
848	}	1071	}
849		1072
850	void	1073	void
851	ev_timer_start (struct ev_timer *w)	1074	ev_timer_start (EV_P_ struct ev_timer *w)
852	{	1075	{
853	if (ev_is_active (w))	1076	if (ev_is_active (w))
854	return;	1077	return;
855		1078
856	w->at += now;	1079	w->at += mn_now;
857		1080
858	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1081	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
859		1082
860	ev_start ((W)w, ++timercnt);	1083	ev_start (EV_A_ (W)w, ++timercnt);
861	array_needsize (timers, timermax, timercnt, );	1084	array_needsize (timers, timermax, timercnt, );
862	timers [timercnt - 1] = w;	1085	timers [timercnt - 1] = w;
863	upheap ((WT *)timers, timercnt - 1);	1086	upheap ((WT *)timers, timercnt - 1);
864	}	1087	}
865		1088
866	void	1089	void
867	ev_timer_stop (struct ev_timer *w)	1090	ev_timer_stop (EV_P_ struct ev_timer *w)
868	{	1091	{
869	ev_clear_pending ((W)w);	1092	ev_clear_pending (EV_A_ (W)w);
870	if (!ev_is_active (w))	1093	if (!ev_is_active (w))
871	return;	1094	return;
872		1095
873	if (w->active < timercnt--)	1096	if (w->active < timercnt--)
874	{	1097	{
…		…
876	downheap ((WT *)timers, timercnt, w->active - 1);	1099	downheap ((WT *)timers, timercnt, w->active - 1);
877	}	1100	}
878		1101
879	w->at = w->repeat;	1102	w->at = w->repeat;
880		1103
881	ev_stop ((W)w);	1104	ev_stop (EV_A_ (W)w);
882	}	1105	}
883		1106
884	void	1107	void
885	ev_timer_again (struct ev_timer *w)	1108	ev_timer_again (EV_P_ struct ev_timer *w)
886	{	1109	{
887	if (ev_is_active (w))	1110	if (ev_is_active (w))
888	{	1111	{
889	if (w->repeat)	1112	if (w->repeat)
890	{	1113	{
891	w->at = now + w->repeat;	1114	w->at = mn_now + w->repeat;
892	downheap ((WT *)timers, timercnt, w->active - 1);	1115	downheap ((WT *)timers, timercnt, w->active - 1);
893	}	1116	}
894	else	1117	else
895	ev_timer_stop (w);	1118	ev_timer_stop (EV_A_ w);
896	}	1119	}
897	else if (w->repeat)	1120	else if (w->repeat)
898	ev_timer_start (w);	1121	ev_timer_start (EV_A_ w);
899	}	1122	}
900		1123
901	void	1124	void
902	ev_periodic_start (struct ev_periodic *w)	1125	ev_periodic_start (EV_P_ struct ev_periodic *w)
903	{	1126	{
904	if (ev_is_active (w))	1127	if (ev_is_active (w))
905	return;	1128	return;
906		1129
907	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1130	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
908		1131
909	/* this formula differs from the one in periodic_reify because we do not always round up */	1132	/* this formula differs from the one in periodic_reify because we do not always round up */
910	if (w->interval)	1133	if (w->interval)
911	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1134	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
912		1135
913	ev_start ((W)w, ++periodiccnt);	1136	ev_start (EV_A_ (W)w, ++periodiccnt);
914	array_needsize (periodics, periodicmax, periodiccnt, );	1137	array_needsize (periodics, periodicmax, periodiccnt, );
915	periodics [periodiccnt - 1] = w;	1138	periodics [periodiccnt - 1] = w;
916	upheap ((WT *)periodics, periodiccnt - 1);	1139	upheap ((WT *)periodics, periodiccnt - 1);
917	}	1140	}
918		1141
919	void	1142	void
920	ev_periodic_stop (struct ev_periodic *w)	1143	ev_periodic_stop (EV_P_ struct ev_periodic *w)
921	{	1144	{
922	ev_clear_pending ((W)w);	1145	ev_clear_pending (EV_A_ (W)w);
923	if (!ev_is_active (w))	1146	if (!ev_is_active (w))
924	return;	1147	return;
925		1148
926	if (w->active < periodiccnt--)	1149	if (w->active < periodiccnt--)
927	{	1150	{
928	periodics [w->active - 1] = periodics [periodiccnt];	1151	periodics [w->active - 1] = periodics [periodiccnt];
929	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1152	downheap ((WT *)periodics, periodiccnt, w->active - 1);
930	}	1153	}
931		1154
932	ev_stop ((W)w);	1155	ev_stop (EV_A_ (W)w);
933	}	1156	}
934		1157
935	void	1158	void
936	ev_signal_start (struct ev_signal *w)	1159	ev_idle_start (EV_P_ struct ev_idle *w)
937	{	1160	{
938	if (ev_is_active (w))	1161	if (ev_is_active (w))
939	return;	1162	return;
940		1163
		1164	ev_start (EV_A_ (W)w, ++idlecnt);
		1165	array_needsize (idles, idlemax, idlecnt, );
		1166	idles [idlecnt - 1] = w;
		1167	}
		1168
		1169	void
		1170	ev_idle_stop (EV_P_ struct ev_idle *w)
		1171	{
		1172	ev_clear_pending (EV_A_ (W)w);
		1173	if (ev_is_active (w))
		1174	return;
		1175
		1176	idles [w->active - 1] = idles [--idlecnt];
		1177	ev_stop (EV_A_ (W)w);
		1178	}
		1179
		1180	void
		1181	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1182	{
		1183	if (ev_is_active (w))
		1184	return;
		1185
		1186	ev_start (EV_A_ (W)w, ++preparecnt);
		1187	array_needsize (prepares, preparemax, preparecnt, );
		1188	prepares [preparecnt - 1] = w;
		1189	}
		1190
		1191	void
		1192	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1193	{
		1194	ev_clear_pending (EV_A_ (W)w);
		1195	if (ev_is_active (w))
		1196	return;
		1197
		1198	prepares [w->active - 1] = prepares [--preparecnt];
		1199	ev_stop (EV_A_ (W)w);
		1200	}
		1201
		1202	void
		1203	ev_check_start (EV_P_ struct ev_check *w)
		1204	{
		1205	if (ev_is_active (w))
		1206	return;
		1207
		1208	ev_start (EV_A_ (W)w, ++checkcnt);
		1209	array_needsize (checks, checkmax, checkcnt, );
		1210	checks [checkcnt - 1] = w;
		1211	}
		1212
		1213	void
		1214	ev_check_stop (EV_P_ struct ev_check *w)
		1215	{
		1216	ev_clear_pending (EV_A_ (W)w);
		1217	if (ev_is_active (w))
		1218	return;
		1219
		1220	checks [w->active - 1] = checks [--checkcnt];
		1221	ev_stop (EV_A_ (W)w);
		1222	}
		1223
		1224	#ifndef SA_RESTART
		1225	# define SA_RESTART 0
		1226	#endif
		1227
		1228	void
		1229	ev_signal_start (EV_P_ struct ev_signal *w)
		1230	{
		1231	#if EV_MULTIPLICITY
		1232	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1233	#endif
		1234	if (ev_is_active (w))
		1235	return;
		1236
941	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1237	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
942		1238
943	ev_start ((W)w, 1);	1239	ev_start (EV_A_ (W)w, 1);
944	array_needsize (signals, signalmax, w->signum, signals_init);	1240	array_needsize (signals, signalmax, w->signum, signals_init);
945	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1241	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
946		1242
947	if (!w->next)	1243	if (!w->next)
948	{	1244	{
949	struct sigaction sa;	1245	struct sigaction sa;
950	sa.sa_handler = sighandler;	1246	sa.sa_handler = sighandler;
951	sigfillset (&sa.sa_mask);	1247	sigfillset (&sa.sa_mask);
952	sa.sa_flags = 0;	1248	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
953	sigaction (w->signum, &sa, 0);	1249	sigaction (w->signum, &sa, 0);
954	}	1250	}
955	}	1251	}
956		1252
957	void	1253	void
958	ev_signal_stop (struct ev_signal *w)	1254	ev_signal_stop (EV_P_ struct ev_signal *w)
959	{	1255	{
960	ev_clear_pending ((W)w);	1256	ev_clear_pending (EV_A_ (W)w);
961	if (!ev_is_active (w))	1257	if (!ev_is_active (w))
962	return;	1258	return;
963		1259
964	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1260	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
965	ev_stop ((W)w);	1261	ev_stop (EV_A_ (W)w);
966		1262
967	if (!signals [w->signum - 1].head)	1263	if (!signals [w->signum - 1].head)
968	signal (w->signum, SIG_DFL);	1264	signal (w->signum, SIG_DFL);
969	}	1265	}
970		1266
971	void	1267	void
972	ev_idle_start (struct ev_idle *w)	1268	ev_child_start (EV_P_ struct ev_child *w)
973	{	1269	{
		1270	#if EV_MULTIPLICITY
		1271	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1272	#endif
974	if (ev_is_active (w))	1273	if (ev_is_active (w))
975	return;	1274	return;
976		1275
977	ev_start ((W)w, ++idlecnt);	1276	ev_start (EV_A_ (W)w, 1);
978	array_needsize (idles, idlemax, idlecnt, );	1277	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
979	idles [idlecnt - 1] = w;
980	}	1278	}
981		1279
982	void	1280	void
983	ev_idle_stop (struct ev_idle *w)	1281	ev_child_stop (EV_P_ struct ev_child *w)
984	{	1282	{
985	ev_clear_pending ((W)w);	1283	ev_clear_pending (EV_A_ (W)w);
986	if (ev_is_active (w))	1284	if (ev_is_active (w))
987	return;	1285	return;
988		1286
989	idles [w->active - 1] = idles [--idlecnt];
990	ev_stop ((W)w);
991	}
992
993	void
994	ev_prepare_start (struct ev_prepare *w)
995	{
996	if (ev_is_active (w))
997	return;
998
999	ev_start ((W)w, ++preparecnt);
1000	array_needsize (prepares, preparemax, preparecnt, );
1001	prepares [preparecnt - 1] = w;
1002	}
1003
1004	void
1005	ev_prepare_stop (struct ev_prepare *w)
1006	{
1007	ev_clear_pending ((W)w);
1008	if (ev_is_active (w))
1009	return;
1010
1011	prepares [w->active - 1] = prepares [--preparecnt];
1012	ev_stop ((W)w);
1013	}
1014
1015	void
1016	ev_check_start (struct ev_check *w)
1017	{
1018	if (ev_is_active (w))
1019	return;
1020
1021	ev_start ((W)w, ++checkcnt);
1022	array_needsize (checks, checkmax, checkcnt, );
1023	checks [checkcnt - 1] = w;
1024	}
1025
1026	void
1027	ev_check_stop (struct ev_check *w)
1028	{
1029	ev_clear_pending ((W)w);
1030	if (ev_is_active (w))
1031	return;
1032
1033	checks [w->active - 1] = checks [--checkcnt];
1034	ev_stop ((W)w);
1035	}
1036
1037	void
1038	ev_child_start (struct ev_child *w)
1039	{
1040	if (ev_is_active (w))
1041	return;
1042
1043	ev_start ((W)w, 1);
1044	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1045	}
1046
1047	void
1048	ev_child_stop (struct ev_child *w)
1049	{
1050	ev_clear_pending ((W)w);
1051	if (ev_is_active (w))
1052	return;
1053
1054	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1287	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1055	ev_stop ((W)w);	1288	ev_stop (EV_A_ (W)w);
1056	}	1289	}
1057		1290
1058	/*****************************************************************************/	1291	/*****************************************************************************/
1059		1292
1060	struct ev_once	1293	struct ev_once
…		…
1064	void (cb)(int revents, void arg);	1297	void (cb)(int revents, void arg);
1065	void *arg;	1298	void *arg;
1066	};	1299	};
1067		1300
1068	static void	1301	static void
1069	once_cb (struct ev_once *once, int revents)	1302	once_cb (EV_P_ struct ev_once *once, int revents)
1070	{	1303	{
1071	void (cb)(int revents, void arg) = once->cb;	1304	void (cb)(int revents, void arg) = once->cb;
1072	void *arg = once->arg;	1305	void *arg = once->arg;
1073		1306
1074	ev_io_stop (&once->io);	1307	ev_io_stop (EV_A_ &once->io);
1075	ev_timer_stop (&once->to);	1308	ev_timer_stop (EV_A_ &once->to);
1076	free (once);	1309	free (once);
1077		1310
1078	cb (revents, arg);	1311	cb (revents, arg);
1079	}	1312	}
1080		1313
1081	static void	1314	static void
1082	once_cb_io (struct ev_io *w, int revents)	1315	once_cb_io (EV_P_ struct ev_io *w, int revents)
1083	{	1316	{
1084	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1317	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1085	}	1318	}
1086		1319
1087	static void	1320	static void
1088	once_cb_to (struct ev_timer *w, int revents)	1321	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1089	{	1322	{
1090	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1323	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1091	}	1324	}
1092		1325
1093	void	1326	void
1094	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1327	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1095	{	1328	{
1096	struct ev_once *once = malloc (sizeof (struct ev_once));	1329	struct ev_once *once = malloc (sizeof (struct ev_once));
1097		1330
1098	if (!once)	1331	if (!once)
1099	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1332	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
…		…
1104		1337
1105	ev_watcher_init (&once->io, once_cb_io);	1338	ev_watcher_init (&once->io, once_cb_io);
1106	if (fd >= 0)	1339	if (fd >= 0)
1107	{	1340	{
1108	ev_io_set (&once->io, fd, events);	1341	ev_io_set (&once->io, fd, events);
1109	ev_io_start (&once->io);	1342	ev_io_start (EV_A_ &once->io);
1110	}	1343	}
1111		1344
1112	ev_watcher_init (&once->to, once_cb_to);	1345	ev_watcher_init (&once->to, once_cb_to);
1113	if (timeout >= 0.)	1346	if (timeout >= 0.)
1114	{	1347	{
1115	ev_timer_set (&once->to, timeout, 0.);	1348	ev_timer_set (&once->to, timeout, 0.);
1116	ev_timer_start (&once->to);	1349	ev_timer_start (EV_A_ &once->to);
1117	}	1350	}
1118	}	1351	}
1119	}	1352	}
1120		1353
1121	/*****************************************************************************/
1122
1123	#if 0
1124
1125	struct ev_io wio;
1126
1127	static void
1128	sin_cb (struct ev_io *w, int revents)
1129	{
1130	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1131	}
1132
1133	static void
1134	ocb (struct ev_timer *w, int revents)
1135	{
1136	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1137	ev_timer_stop (w);
1138	ev_timer_start (w);
1139	}
1140
1141	static void
1142	scb (struct ev_signal *w, int revents)
1143	{
1144	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1145	ev_io_stop (&wio);
1146	ev_io_start (&wio);
1147	}
1148
1149	static void
1150	gcb (struct ev_signal *w, int revents)
1151	{
1152	fprintf (stderr, "generic %x\n", revents);
1153
1154	}
1155
1156	int main (void)
1157	{
1158	ev_init (0);
1159
1160	ev_io_init (&wio, sin_cb, 0, EV_READ);
1161	ev_io_start (&wio);
1162
1163	struct ev_timer t[10000];
1164
1165	#if 0
1166	int i;
1167	for (i = 0; i < 10000; ++i)
1168	{
1169	struct ev_timer *w = t + i;
1170	ev_watcher_init (w, ocb, i);
1171	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1172	ev_timer_start (w);
1173	if (drand48 () < 0.5)
1174	ev_timer_stop (w);
1175	}
1176	#endif
1177
1178	struct ev_timer t1;
1179	ev_timer_init (&t1, ocb, 5, 10);
1180	ev_timer_start (&t1);
1181
1182	struct ev_signal sig;
1183	ev_signal_init (&sig, scb, SIGQUIT);
1184	ev_signal_start (&sig);
1185
1186	struct ev_check cw;
1187	ev_check_init (&cw, gcb);
1188	ev_check_start (&cw);
1189
1190	struct ev_idle iw;
1191	ev_idle_init (&iw, gcb);
1192	ev_idle_start (&iw);
1193
1194	ev_loop (0);
1195
1196	return 0;
1197	}
1198
1199	#endif
1200
1201
1202
1203

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Comparing libev/ev.c (file contents): Revision 1.40 by root, Fri Nov 2 11:02:23 2007 UTC vs. Revision 1.56 by root, Sun Nov 4 15:58:49 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.40 by root, Fri Nov 2 11:02:23 2007 UTC vs.
Revision 1.56 by root, Sun Nov 4 15:58:49 2007 UTC