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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 1.57 by root, Sun Nov 4 16:43:53 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	#if EV_MULTIPLICITY
522	}	713	struct ev_loop *loop = default_loop;
523
524	void
525	ev_fork_parent (void)
526	{
527	/* nop */
528	}
529
530	void
531	ev_fork_child (void)
532	{
533	#if EV_USE_EPOLL
534	if (ev_method == EVMETHOD_EPOLL)
535	epoll_postfork_child ();
536	#endif	714	#endif
537		715
		716	ev_ref (EV_A); /* child watcher */
		717	ev_signal_stop (EV_A_ &childev);
		718
		719	ev_ref (EV_A); /* signal watcher */
538	ev_io_stop (&sigev);	720	ev_io_stop (EV_A_ &sigev);
		721
		722	close (sigpipe [0]); sigpipe [0] = 0;
		723	close (sigpipe [1]); sigpipe [1] = 0;
		724
		725	loop_destroy (EV_A);
		726	}
		727
		728	void
		729	ev_default_fork (EV_P)
		730	{
		731	loop_fork (EV_A);
		732
		733	ev_io_stop (EV_A_ &sigev);
539	close (sigpipe [0]);	734	close (sigpipe [0]);
540	close (sigpipe [1]);	735	close (sigpipe [1]);
541	pipe (sigpipe);	736	pipe (sigpipe);
		737
		738	ev_ref (EV_A); /* signal watcher */
542	siginit ();	739	siginit (EV_A);
543	}	740	}
544		741
545	/*****************************************************************************/	742	/*****************************************************************************/
546		743
547	static void	744	static void
548	call_pending (void)	745	call_pending (EV_P)
549	{	746	{
		747	int pri;
		748
		749	for (pri = NUMPRI; pri--; )
550	while (pendingcnt)	750	while (pendingcnt [pri])
551	{	751	{
552	ANPENDING *p = pendings + --pendingcnt;	752	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
553		753
554	if (p->w)	754	if (p->w)
555	{	755	{
556	p->w->pending = 0;	756	p->w->pending = 0;
557	p->w->cb (p->w, p->events);	757	p->w->cb (EV_A_ p->w, p->events);
558	}	758	}
559	}	759	}
560	}	760	}
561		761
562	static void	762	static void
563	timers_reify (void)	763	timers_reify (EV_P)
564	{	764	{
565	while (timercnt && timers [0]->at <= now)	765	while (timercnt && timers [0]->at <= mn_now)
566	{	766	{
567	struct ev_timer *w = timers [0];	767	struct ev_timer *w = timers [0];
568		768
569	/* first reschedule or stop timer */	769	/* first reschedule or stop timer */
570	if (w->repeat)	770	if (w->repeat)
571	{	771	{
572	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	772	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
573	w->at = now + w->repeat;	773	w->at = mn_now + w->repeat;
574	downheap ((WT *)timers, timercnt, 0);	774	downheap ((WT *)timers, timercnt, 0);
575	}	775	}
576	else	776	else
577	ev_timer_stop (w); /* nonrepeating: stop timer */	777	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
578		778
579	event ((W)w, EV_TIMEOUT);	779	event (EV_A_ (W)w, EV_TIMEOUT);
580	}	780	}
581	}	781	}
582		782
583	static void	783	static void
584	periodics_reify (void)	784	periodics_reify (EV_P)
585	{	785	{
586	while (periodiccnt && periodics [0]->at <= ev_now)	786	while (periodiccnt && periodics [0]->at <= rt_now)
587	{	787	{
588	struct ev_periodic *w = periodics [0];	788	struct ev_periodic *w = periodics [0];
589		789
590	/* first reschedule or stop timer */	790	/* first reschedule or stop timer */
591	if (w->interval)	791	if (w->interval)
592	{	792	{
593	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	793	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));	794	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
595	downheap ((WT *)periodics, periodiccnt, 0);	795	downheap ((WT *)periodics, periodiccnt, 0);
596	}	796	}
597	else	797	else
598	ev_periodic_stop (w); /* nonrepeating: stop timer */	798	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
599		799
600	event ((W)w, EV_PERIODIC);	800	event (EV_A_ (W)w, EV_PERIODIC);
601	}	801	}
602	}	802	}
603		803
604	static void	804	static void
605	periodics_reschedule (ev_tstamp diff)	805	periodics_reschedule (EV_P)
606	{	806	{
607	int i;	807	int i;
608		808
609	/* adjust periodics after time jump */	809	/* adjust periodics after time jump */
610	for (i = 0; i < periodiccnt; ++i)	810	for (i = 0; i < periodiccnt; ++i)
611	{	811	{
612	struct ev_periodic *w = periodics [i];	812	struct ev_periodic *w = periodics [i];
613		813
614	if (w->interval)	814	if (w->interval)
615	{	815	{
616	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	816	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
617		817
618	if (fabs (diff) >= 1e-4)	818	if (fabs (diff) >= 1e-4)
619	{	819	{
620	ev_periodic_stop (w);	820	ev_periodic_stop (EV_A_ w);
621	ev_periodic_start (w);	821	ev_periodic_start (EV_A_ w);
622		822
623	i = 0; /* restart loop, inefficient, but time jumps should be rare */	823	i = 0; /* restart loop, inefficient, but time jumps should be rare */
624	}	824	}
625	}	825	}
626	}	826	}
627	}	827	}
628		828
629	static int	829	inline int
630	time_update_monotonic (void)	830	time_update_monotonic (EV_P)
631	{	831	{
632	now = get_clock ();	832	mn_now = get_clock ();
633		833
634	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	834	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
635	{	835	{
636	ev_now = now + diff;	836	rt_now = rtmn_diff + mn_now;
637	return 0;	837	return 0;
638	}	838	}
639	else	839	else
640	{	840	{
641	now_floor = now;	841	now_floor = mn_now;
642	ev_now = ev_time ();	842	rt_now = ev_time ();
643	return 1;	843	return 1;
644	}	844	}
645	}	845	}
646		846
647	static void	847	static void
648	time_update (void)	848	time_update (EV_P)
649	{	849	{
650	int i;	850	int i;
651		851
652	#if EV_USE_MONOTONIC	852	#if EV_USE_MONOTONIC
653	if (expect_true (have_monotonic))	853	if (expect_true (have_monotonic))
654	{	854	{
655	if (time_update_monotonic ())	855	if (time_update_monotonic (EV_A))
656	{	856	{
657	ev_tstamp odiff = diff;	857	ev_tstamp odiff = rtmn_diff;
658		858
659	for (i = 4; --i; ) /* loop a few times, before making important decisions */	859	for (i = 4; --i; ) /* loop a few times, before making important decisions */
660	{	860	{
661	diff = ev_now - now;	861	rtmn_diff = rt_now - mn_now;
662		862
663	if (fabs (odiff - diff) < MIN_TIMEJUMP)	863	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
664	return; /* all is well */	864	return; /* all is well */
665		865
666	ev_now = ev_time ();	866	rt_now = ev_time ();
667	now = get_clock ();	867	mn_now = get_clock ();
668	now_floor = now;	868	now_floor = mn_now;
669	}	869	}
670		870
671	periodics_reschedule (diff - odiff);	871	periodics_reschedule (EV_A);
672	/* no timer adjustment, as the monotonic clock doesn't jump */	872	/* no timer adjustment, as the monotonic clock doesn't jump */
		873	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
673	}	874	}
674	}	875	}
675	else	876	else
676	#endif	877	#endif
677	{	878	{
678	ev_now = ev_time ();	879	rt_now = ev_time ();
679		880
680	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	881	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
681	{	882	{
682	periodics_reschedule (ev_now - now);	883	periodics_reschedule (EV_A);
683		884
684	/* adjust timers. this is easy, as the offset is the same for all */	885	/* adjust timers. this is easy, as the offset is the same for all */
685	for (i = 0; i < timercnt; ++i)	886	for (i = 0; i < timercnt; ++i)
686	timers [i]->at += diff;	887	timers [i]->at += rt_now - mn_now;
687	}	888	}
688		889
689	now = ev_now;	890	mn_now = rt_now;
690	}	891	}
691	}	892	}
692		893
693	int ev_loop_done;	894	void
		895	ev_ref (EV_P)
		896	{
		897	++activecnt;
		898	}
694		899
		900	void
		901	ev_unref (EV_P)
		902	{
		903	--activecnt;
		904	}
		905
		906	static int loop_done;
		907
		908	void
695	void ev_loop (int flags)	909	ev_loop (EV_P_ int flags)
696	{	910	{
697	double block;	911	double block;
698	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	912	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
699		913
700	do	914	do
701	{	915	{
702	/* queue check watchers (and execute them) */	916	/* queue check watchers (and execute them) */
703	if (expect_false (preparecnt))	917	if (expect_false (preparecnt))
704	{	918	{
705	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	919	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
706	call_pending ();	920	call_pending (EV_A);
707	}	921	}
708		922
709	/* update fd-related kernel structures */	923	/* update fd-related kernel structures */
710	fd_reify ();	924	fd_reify (EV_A);
711		925
712	/* calculate blocking time */	926	/* calculate blocking time */
713		927
714	/* we only need this for !monotonic clockor timers, but as we basically	928	/* we only need this for !monotonic clockor timers, but as we basically
715	always have timers, we just calculate it always */	929	always have timers, we just calculate it always */
716	#if EV_USE_MONOTONIC	930	#if EV_USE_MONOTONIC
717	if (expect_true (have_monotonic))	931	if (expect_true (have_monotonic))
718	time_update_monotonic ();	932	time_update_monotonic (EV_A);
719	else	933	else
720	#endif	934	#endif
721	{	935	{
722	ev_now = ev_time ();	936	rt_now = ev_time ();
723	now = ev_now;	937	mn_now = rt_now;
724	}	938	}
725		939
726	if (flags & EVLOOP_NONBLOCK || idlecnt)	940	if (flags & EVLOOP_NONBLOCK || idlecnt)
727	block = 0.;	941	block = 0.;
728	else	942	else
729	{	943	{
730	block = MAX_BLOCKTIME;	944	block = MAX_BLOCKTIME;
731		945
732	if (timercnt)	946	if (timercnt)
733	{	947	{
734	ev_tstamp to = timers [0]->at - now + method_fudge;	948	ev_tstamp to = timers [0]->at - mn_now + method_fudge;
735	if (block > to) block = to;	949	if (block > to) block = to;
736	}	950	}
737		951
738	if (periodiccnt)	952	if (periodiccnt)
739	{	953	{
740	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	954	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
741	if (block > to) block = to;	955	if (block > to) block = to;
742	}	956	}
743		957
744	if (block < 0.) block = 0.;	958	if (block < 0.) block = 0.;
745	}	959	}
746		960
747	method_poll (block);	961	method_poll (EV_A_ block);
748		962
749	/* update ev_now, do magic */	963	/* update rt_now, do magic */
750	time_update ();	964	time_update (EV_A);
751		965
752	/* queue pending timers and reschedule them */	966	/* queue pending timers and reschedule them */
753	timers_reify (); /* relative timers called last */	967	timers_reify (EV_A); /* relative timers called last */
754	periodics_reify (); /* absolute timers called first */	968	periodics_reify (EV_A); /* absolute timers called first */
755		969
756	/* queue idle watchers unless io or timers are pending */	970	/* queue idle watchers unless io or timers are pending */
757	if (!pendingcnt)	971	if (!pendingcnt)
758	queue_events ((W *)idles, idlecnt, EV_IDLE);	972	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
759		973
760	/* queue check watchers, to be executed first */	974	/* queue check watchers, to be executed first */
761	if (checkcnt)	975	if (checkcnt)
762	queue_events ((W *)checks, checkcnt, EV_CHECK);	976	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
763		977
764	call_pending ();	978	call_pending (EV_A);
765	}	979	}
766	while (!ev_loop_done);	980	while (activecnt && !loop_done);
767		981
768	if (ev_loop_done != 2)	982	if (loop_done != 2)
769	ev_loop_done = 0;	983	loop_done = 0;
		984	}
		985
		986	void
		987	ev_unloop (EV_P_ int how)
		988	{
		989	loop_done = how;
770	}	990	}
771		991
772	/*****************************************************************************/	992	/*****************************************************************************/
773		993
774	static void	994	inline void
775	wlist_add (WL *head, WL elem)	995	wlist_add (WL *head, WL elem)
776	{	996	{
777	elem->next = *head;	997	elem->next = *head;
778	*head = elem;	998	*head = elem;
779	}	999	}
780		1000
781	static void	1001	inline void
782	wlist_del (WL *head, WL elem)	1002	wlist_del (WL *head, WL elem)
783	{	1003	{
784	while (*head)	1004	while (*head)
785	{	1005	{
786	if (*head == elem)	1006	if (*head == elem)
…		…
791		1011
792	head = &(*head)->next;	1012	head = &(*head)->next;
793	}	1013	}
794	}	1014	}
795		1015
796	static void	1016	inline void
797	ev_clear_pending (W w)	1017	ev_clear_pending (EV_P_ W w)
798	{	1018	{
799	if (w->pending)	1019	if (w->pending)
800	{	1020	{
801	pendings [w->pending - 1].w = 0;	1021	pendings [ABSPRI (w)][w->pending - 1].w = 0;
802	w->pending = 0;	1022	w->pending = 0;
803	}	1023	}
804	}	1024	}
805		1025
806	static void	1026	inline void
807	ev_start (W w, int active)	1027	ev_start (EV_P_ W w, int active)
808	{	1028	{
		1029	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1030	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1031
809	w->active = active;	1032	w->active = active;
		1033	ev_ref (EV_A);
810	}	1034	}
811		1035
812	static void	1036	inline void
813	ev_stop (W w)	1037	ev_stop (EV_P_ W w)
814	{	1038	{
		1039	ev_unref (EV_A);
815	w->active = 0;	1040	w->active = 0;
816	}	1041	}
817		1042
818	/*****************************************************************************/	1043	/*****************************************************************************/
819		1044
820	void	1045	void
821	ev_io_start (struct ev_io *w)	1046	ev_io_start (EV_P_ struct ev_io *w)
822	{	1047	{
823	int fd = w->fd;	1048	int fd = w->fd;
824		1049
825	if (ev_is_active (w))	1050	if (ev_is_active (w))
826	return;	1051	return;
827		1052
828	assert (("ev_io_start called with negative fd", fd >= 0));	1053	assert (("ev_io_start called with negative fd", fd >= 0));
829		1054
830	ev_start ((W)w, 1);	1055	ev_start (EV_A_ (W)w, 1);
831	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1056	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
832	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1057	wlist_add ((WL *)&anfds[fd].head, (WL)w);
833		1058
834	fd_change (fd);	1059	fd_change (EV_A_ fd);
835	}	1060	}
836		1061
837	void	1062	void
838	ev_io_stop (struct ev_io *w)	1063	ev_io_stop (EV_P_ struct ev_io *w)
839	{	1064	{
840	ev_clear_pending ((W)w);	1065	ev_clear_pending (EV_A_ (W)w);
841	if (!ev_is_active (w))	1066	if (!ev_is_active (w))
842	return;	1067	return;
843		1068
844	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1069	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
845	ev_stop ((W)w);	1070	ev_stop (EV_A_ (W)w);
846		1071
847	fd_change (w->fd);	1072	fd_change (EV_A_ w->fd);
848	}	1073	}
849		1074
850	void	1075	void
851	ev_timer_start (struct ev_timer *w)	1076	ev_timer_start (EV_P_ struct ev_timer *w)
852	{	1077	{
853	if (ev_is_active (w))	1078	if (ev_is_active (w))
854	return;	1079	return;
855		1080
856	w->at += now;	1081	w->at += mn_now;
857		1082
858	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1083	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
859		1084
860	ev_start ((W)w, ++timercnt);	1085	ev_start (EV_A_ (W)w, ++timercnt);
861	array_needsize (timers, timermax, timercnt, );	1086	array_needsize (timers, timermax, timercnt, );
862	timers [timercnt - 1] = w;	1087	timers [timercnt - 1] = w;
863	upheap ((WT *)timers, timercnt - 1);	1088	upheap ((WT *)timers, timercnt - 1);
864	}	1089	}
865		1090
866	void	1091	void
867	ev_timer_stop (struct ev_timer *w)	1092	ev_timer_stop (EV_P_ struct ev_timer *w)
868	{	1093	{
869	ev_clear_pending ((W)w);	1094	ev_clear_pending (EV_A_ (W)w);
870	if (!ev_is_active (w))	1095	if (!ev_is_active (w))
871	return;	1096	return;
872		1097
873	if (w->active < timercnt--)	1098	if (w->active < timercnt--)
874	{	1099	{
…		…
876	downheap ((WT *)timers, timercnt, w->active - 1);	1101	downheap ((WT *)timers, timercnt, w->active - 1);
877	}	1102	}
878		1103
879	w->at = w->repeat;	1104	w->at = w->repeat;
880		1105
881	ev_stop ((W)w);	1106	ev_stop (EV_A_ (W)w);
882	}	1107	}
883		1108
884	void	1109	void
885	ev_timer_again (struct ev_timer *w)	1110	ev_timer_again (EV_P_ struct ev_timer *w)
886	{	1111	{
887	if (ev_is_active (w))	1112	if (ev_is_active (w))
888	{	1113	{
889	if (w->repeat)	1114	if (w->repeat)
890	{	1115	{
891	w->at = now + w->repeat;	1116	w->at = mn_now + w->repeat;
892	downheap ((WT *)timers, timercnt, w->active - 1);	1117	downheap ((WT *)timers, timercnt, w->active - 1);
893	}	1118	}
894	else	1119	else
895	ev_timer_stop (w);	1120	ev_timer_stop (EV_A_ w);
896	}	1121	}
897	else if (w->repeat)	1122	else if (w->repeat)
898	ev_timer_start (w);	1123	ev_timer_start (EV_A_ w);
899	}	1124	}
900		1125
901	void	1126	void
902	ev_periodic_start (struct ev_periodic *w)	1127	ev_periodic_start (EV_P_ struct ev_periodic *w)
903	{	1128	{
904	if (ev_is_active (w))	1129	if (ev_is_active (w))
905	return;	1130	return;
906		1131
907	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1132	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
908		1133
909	/* this formula differs from the one in periodic_reify because we do not always round up */	1134	/* this formula differs from the one in periodic_reify because we do not always round up */
910	if (w->interval)	1135	if (w->interval)
911	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1136	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
912		1137
913	ev_start ((W)w, ++periodiccnt);	1138	ev_start (EV_A_ (W)w, ++periodiccnt);
914	array_needsize (periodics, periodicmax, periodiccnt, );	1139	array_needsize (periodics, periodicmax, periodiccnt, );
915	periodics [periodiccnt - 1] = w;	1140	periodics [periodiccnt - 1] = w;
916	upheap ((WT *)periodics, periodiccnt - 1);	1141	upheap ((WT *)periodics, periodiccnt - 1);
917	}	1142	}
918		1143
919	void	1144	void
920	ev_periodic_stop (struct ev_periodic *w)	1145	ev_periodic_stop (EV_P_ struct ev_periodic *w)
921	{	1146	{
922	ev_clear_pending ((W)w);	1147	ev_clear_pending (EV_A_ (W)w);
923	if (!ev_is_active (w))	1148	if (!ev_is_active (w))
924	return;	1149	return;
925		1150
926	if (w->active < periodiccnt--)	1151	if (w->active < periodiccnt--)
927	{	1152	{
928	periodics [w->active - 1] = periodics [periodiccnt];	1153	periodics [w->active - 1] = periodics [periodiccnt];
929	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1154	downheap ((WT *)periodics, periodiccnt, w->active - 1);
930	}	1155	}
931		1156
932	ev_stop ((W)w);	1157	ev_stop (EV_A_ (W)w);
933	}	1158	}
934		1159
935	void	1160	void
936	ev_signal_start (struct ev_signal *w)	1161	ev_idle_start (EV_P_ struct ev_idle *w)
937	{	1162	{
938	if (ev_is_active (w))	1163	if (ev_is_active (w))
939	return;	1164	return;
940		1165
		1166	ev_start (EV_A_ (W)w, ++idlecnt);
		1167	array_needsize (idles, idlemax, idlecnt, );
		1168	idles [idlecnt - 1] = w;
		1169	}
		1170
		1171	void
		1172	ev_idle_stop (EV_P_ struct ev_idle *w)
		1173	{
		1174	ev_clear_pending (EV_A_ (W)w);
		1175	if (ev_is_active (w))
		1176	return;
		1177
		1178	idles [w->active - 1] = idles [--idlecnt];
		1179	ev_stop (EV_A_ (W)w);
		1180	}
		1181
		1182	void
		1183	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1184	{
		1185	if (ev_is_active (w))
		1186	return;
		1187
		1188	ev_start (EV_A_ (W)w, ++preparecnt);
		1189	array_needsize (prepares, preparemax, preparecnt, );
		1190	prepares [preparecnt - 1] = w;
		1191	}
		1192
		1193	void
		1194	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1195	{
		1196	ev_clear_pending (EV_A_ (W)w);
		1197	if (ev_is_active (w))
		1198	return;
		1199
		1200	prepares [w->active - 1] = prepares [--preparecnt];
		1201	ev_stop (EV_A_ (W)w);
		1202	}
		1203
		1204	void
		1205	ev_check_start (EV_P_ struct ev_check *w)
		1206	{
		1207	if (ev_is_active (w))
		1208	return;
		1209
		1210	ev_start (EV_A_ (W)w, ++checkcnt);
		1211	array_needsize (checks, checkmax, checkcnt, );
		1212	checks [checkcnt - 1] = w;
		1213	}
		1214
		1215	void
		1216	ev_check_stop (EV_P_ struct ev_check *w)
		1217	{
		1218	ev_clear_pending (EV_A_ (W)w);
		1219	if (ev_is_active (w))
		1220	return;
		1221
		1222	checks [w->active - 1] = checks [--checkcnt];
		1223	ev_stop (EV_A_ (W)w);
		1224	}
		1225
		1226	#ifndef SA_RESTART
		1227	# define SA_RESTART 0
		1228	#endif
		1229
		1230	void
		1231	ev_signal_start (EV_P_ struct ev_signal *w)
		1232	{
		1233	#if EV_MULTIPLICITY
		1234	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1235	#endif
		1236	if (ev_is_active (w))
		1237	return;
		1238
941	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1239	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
942		1240
943	ev_start ((W)w, 1);	1241	ev_start (EV_A_ (W)w, 1);
944	array_needsize (signals, signalmax, w->signum, signals_init);	1242	array_needsize (signals, signalmax, w->signum, signals_init);
945	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1243	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
946		1244
947	if (!w->next)	1245	if (!w->next)
948	{	1246	{
949	struct sigaction sa;	1247	struct sigaction sa;
950	sa.sa_handler = sighandler;	1248	sa.sa_handler = sighandler;
951	sigfillset (&sa.sa_mask);	1249	sigfillset (&sa.sa_mask);
952	sa.sa_flags = 0;	1250	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
953	sigaction (w->signum, &sa, 0);	1251	sigaction (w->signum, &sa, 0);
954	}	1252	}
955	}	1253	}
956		1254
957	void	1255	void
958	ev_signal_stop (struct ev_signal *w)	1256	ev_signal_stop (EV_P_ struct ev_signal *w)
959	{	1257	{
960	ev_clear_pending ((W)w);	1258	ev_clear_pending (EV_A_ (W)w);
961	if (!ev_is_active (w))	1259	if (!ev_is_active (w))
962	return;	1260	return;
963		1261
964	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1262	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
965	ev_stop ((W)w);	1263	ev_stop (EV_A_ (W)w);
966		1264
967	if (!signals [w->signum - 1].head)	1265	if (!signals [w->signum - 1].head)
968	signal (w->signum, SIG_DFL);	1266	signal (w->signum, SIG_DFL);
969	}	1267	}
970		1268
971	void	1269	void
972	ev_idle_start (struct ev_idle *w)	1270	ev_child_start (EV_P_ struct ev_child *w)
973	{	1271	{
		1272	#if EV_MULTIPLICITY
		1273	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1274	#endif
974	if (ev_is_active (w))	1275	if (ev_is_active (w))
975	return;	1276	return;
976		1277
977	ev_start ((W)w, ++idlecnt);	1278	ev_start (EV_A_ (W)w, 1);
978	array_needsize (idles, idlemax, idlecnt, );	1279	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
979	idles [idlecnt - 1] = w;
980	}	1280	}
981		1281
982	void	1282	void
983	ev_idle_stop (struct ev_idle *w)	1283	ev_child_stop (EV_P_ struct ev_child *w)
984	{	1284	{
985	ev_clear_pending ((W)w);	1285	ev_clear_pending (EV_A_ (W)w);
986	if (ev_is_active (w))	1286	if (ev_is_active (w))
987	return;	1287	return;
988		1288
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);	1289	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1055	ev_stop ((W)w);	1290	ev_stop (EV_A_ (W)w);
1056	}	1291	}
1057		1292
1058	/*****************************************************************************/	1293	/*****************************************************************************/
1059		1294
1060	struct ev_once	1295	struct ev_once
…		…
1064	void (*cb)(int revents, void *arg);	1299	void (*cb)(int revents, void *arg);
1065	void *arg;	1300	void *arg;
1066	};	1301	};
1067		1302
1068	static void	1303	static void
1069	once_cb (struct ev_once *once, int revents)	1304	once_cb (EV_P_ struct ev_once *once, int revents)
1070	{	1305	{
1071	void (*cb)(int revents, void *arg) = once->cb;	1306	void (*cb)(int revents, void *arg) = once->cb;
1072	void *arg = once->arg;	1307	void *arg = once->arg;
1073		1308
1074	ev_io_stop (&once->io);	1309	ev_io_stop (EV_A_ &once->io);
1075	ev_timer_stop (&once->to);	1310	ev_timer_stop (EV_A_ &once->to);
1076	free (once);	1311	free (once);
1077		1312
1078	cb (revents, arg);	1313	cb (revents, arg);
1079	}	1314	}
1080		1315
1081	static void	1316	static void
1082	once_cb_io (struct ev_io *w, int revents)	1317	once_cb_io (EV_P_ struct ev_io *w, int revents)
1083	{	1318	{
1084	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1319	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1085	}	1320	}
1086		1321
1087	static void	1322	static void
1088	once_cb_to (struct ev_timer *w, int revents)	1323	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1089	{	1324	{
1090	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1325	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1091	}	1326	}
1092		1327
1093	void	1328	void
1094	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1329	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1095	{	1330	{
1096	struct ev_once *once = malloc (sizeof (struct ev_once));	1331	struct ev_once *once = malloc (sizeof (struct ev_once));
1097		1332
1098	if (!once)	1333	if (!once)
1099	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1334	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
…		…
1104		1339
1105	ev_watcher_init (&once->io, once_cb_io);	1340	ev_watcher_init (&once->io, once_cb_io);
1106	if (fd >= 0)	1341	if (fd >= 0)
1107	{	1342	{
1108	ev_io_set (&once->io, fd, events);	1343	ev_io_set (&once->io, fd, events);
1109	ev_io_start (&once->io);	1344	ev_io_start (EV_A_ &once->io);
1110	}	1345	}
1111		1346
1112	ev_watcher_init (&once->to, once_cb_to);	1347	ev_watcher_init (&once->to, once_cb_to);
1113	if (timeout >= 0.)	1348	if (timeout >= 0.)
1114	{	1349	{
1115	ev_timer_set (&once->to, timeout, 0.);	1350	ev_timer_set (&once->to, timeout, 0.);
1116	ev_timer_start (&once->to);	1351	ev_timer_start (EV_A_ &once->to);
1117	}	1352	}
1118	}	1353	}
1119	}	1354	}
1120		1355
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
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