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Comparing libev/ev.c (file contents):
Revision 1.44 by root, Fri Nov 2 20:59:14 2007 UTC vs.
Revision 1.58 by root, Sun Nov 4 16:52:52 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_EMBED
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
61	#ifndef EV_USE_POLL	63	#ifndef EV_USEV_POLL
62	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */
63	#endif	65	#endif
64		66
65	#ifndef EV_USE_EPOLL	67	#ifndef EV_USE_EPOLL
66	# define EV_USE_EPOLL 0	68	# define EV_USE_EPOLL 0
67	#endif	69	#endif
…		…
91	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
92	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
93	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
94	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	96	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
95		97
		98	#ifndef EV_EMBED
96	#include "ev.h"	99	# include "ev.h"
		100	#endif
97		101
98	#if __GNUC__ >= 3	102	#if __GNUC__ >= 3
99	# define expect(expr,value) __builtin_expect ((expr),(value))	103	# define expect(expr,value) __builtin_expect ((expr),(value))
100	# define inline inline	104	# define inline inline
101	#else	105	#else
…		…
111		115
112	typedef struct ev_watcher *W;	116	typedef struct ev_watcher *W;
113	typedef struct ev_watcher_list *WL;	117	typedef struct ev_watcher_list *WL;
114	typedef struct ev_watcher_time *WT;	118	typedef struct ev_watcher_time *WT;
115		119
116	static ev_tstamp now_floor, now, diff; /* monotonic clock */	120	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
117	ev_tstamp ev_now;
118	int ev_method;
119
120	static int have_monotonic; /* runtime */
121
122	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
123	static void (*method_modify)(int fd, int oev, int nev);
124	static void (*method_poll)(ev_tstamp timeout);
125		121
126	/*****************************************************************************/	122	/*****************************************************************************/
127		123
128	ev_tstamp	124	typedef struct
		125	{
		126	struct ev_watcher_list *head;
		127	unsigned char events;
		128	unsigned char reify;
		129	} ANFD;
		130
		131	typedef struct
		132	{
		133	W w;
		134	int events;
		135	} ANPENDING;
		136
		137	#if EV_MULTIPLICITY
		138
		139	struct ev_loop
		140	{
		141	# define VAR(name,decl) decl;
		142	# include "ev_vars.h"
		143	};
		144	# undef VAR
		145	# include "ev_wrap.h"
		146
		147	#else
		148
		149	# define VAR(name,decl) static decl;
		150	# include "ev_vars.h"
		151	# undef VAR
		152
		153	#endif
		154
		155	/*****************************************************************************/
		156
		157	inline ev_tstamp
129	ev_time (void)	158	ev_time (void)
130	{	159	{
131	#if EV_USE_REALTIME	160	#if EV_USE_REALTIME
132	struct timespec ts;	161	struct timespec ts;
133	clock_gettime (CLOCK_REALTIME, &ts);	162	clock_gettime (CLOCK_REALTIME, &ts);
…		…
137	gettimeofday (&tv, 0);	166	gettimeofday (&tv, 0);
138	return tv.tv_sec + tv.tv_usec * 1e-6;	167	return tv.tv_sec + tv.tv_usec * 1e-6;
139	#endif	168	#endif
140	}	169	}
141		170
142	static ev_tstamp	171	inline ev_tstamp
143	get_clock (void)	172	get_clock (void)
144	{	173	{
145	#if EV_USE_MONOTONIC	174	#if EV_USE_MONOTONIC
146	if (expect_true (have_monotonic))	175	if (expect_true (have_monotonic))
147	{	176	{
…		…
150	return ts.tv_sec + ts.tv_nsec * 1e-9;	179	return ts.tv_sec + ts.tv_nsec * 1e-9;
151	}	180	}
152	#endif	181	#endif
153		182
154	return ev_time ();	183	return ev_time ();
		184	}
		185
		186	ev_tstamp
		187	ev_now (EV_P)
		188	{
		189	return rt_now;
155	}	190	}
156		191
157	#define array_roundsize(base,n) ((n) | 4 & ~3)	192	#define array_roundsize(base,n) ((n) | 4 & ~3)
158		193
159	#define array_needsize(base,cur,cnt,init) \	194	#define array_needsize(base,cur,cnt,init) \
…		…
171	cur = newcnt; \	206	cur = newcnt; \
172	}	207	}
173		208
174	/*****************************************************************************/	209	/*****************************************************************************/
175		210
176	typedef struct
177	{
178	struct ev_io *head;
179	unsigned char events;
180	unsigned char reify;
181	} ANFD;
182
183	static ANFD *anfds;
184	static int anfdmax;
185
186	static void	211	static void
187	anfds_init (ANFD *base, int count)	212	anfds_init (ANFD *base, int count)
188	{	213	{
189	while (count--)	214	while (count--)
190	{	215	{
…		…
194		219
195	++base;	220	++base;
196	}	221	}
197	}	222	}
198		223
199	typedef struct
200	{
201	W w;
202	int events;
203	} ANPENDING;
204
205	static ANPENDING *pendings [NUMPRI];
206	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
207
208	static void	224	static void
209	event (W w, int events)	225	event (EV_P_ W w, int events)
210	{	226	{
211	if (w->pending)	227	if (w->pending)
212	{	228	{
213	pendings [ABSPRI (w)][w->pending - 1].events |= events;	229	pendings [ABSPRI (w)][w->pending - 1].events |= events;
214	return;	230	return;
…		…
219	pendings [ABSPRI (w)][w->pending - 1].w = w;	235	pendings [ABSPRI (w)][w->pending - 1].w = w;
220	pendings [ABSPRI (w)][w->pending - 1].events = events;	236	pendings [ABSPRI (w)][w->pending - 1].events = events;
221	}	237	}
222		238
223	static void	239	static void
224	queue_events (W *events, int eventcnt, int type)	240	queue_events (EV_P_ W *events, int eventcnt, int type)
225	{	241	{
226	int i;	242	int i;
227		243
228	for (i = 0; i < eventcnt; ++i)	244	for (i = 0; i < eventcnt; ++i)
229	event (events [i], type);	245	event (EV_A_ events [i], type);
230	}	246	}
231		247
232	static void	248	static void
233	fd_event (int fd, int events)	249	fd_event (EV_P_ int fd, int events)
234	{	250	{
235	ANFD *anfd = anfds + fd;	251	ANFD *anfd = anfds + fd;
236	struct ev_io *w;	252	struct ev_io *w;
237		253
238	for (w = anfd->head; w; w = w->next)	254	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
239	{	255	{
240	int ev = w->events & events;	256	int ev = w->events & events;
241		257
242	if (ev)	258	if (ev)
243	event ((W)w, ev);	259	event (EV_A_ (W)w, ev);
244	}	260	}
245	}	261	}
246		262
247	/*****************************************************************************/	263	/*****************************************************************************/
248		264
249	static int *fdchanges;
250	static int fdchangemax, fdchangecnt;
251
252	static void	265	static void
253	fd_reify (void)	266	fd_reify (EV_P)
254	{	267	{
255	int i;	268	int i;
256		269
257	for (i = 0; i < fdchangecnt; ++i)	270	for (i = 0; i < fdchangecnt; ++i)
258	{	271	{
…		…
260	ANFD *anfd = anfds + fd;	273	ANFD *anfd = anfds + fd;
261	struct ev_io *w;	274	struct ev_io *w;
262		275
263	int events = 0;	276	int events = 0;
264		277
265	for (w = anfd->head; w; w = w->next)	278	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
266	events |= w->events;	279	events |= w->events;
267		280
268	anfd->reify = 0;	281	anfd->reify = 0;
269		282
270	if (anfd->events != events)	283	if (anfd->events != events)
271	{	284	{
272	method_modify (fd, anfd->events, events);	285	method_modify (EV_A_ fd, anfd->events, events);
273	anfd->events = events;	286	anfd->events = events;
274	}	287	}
275	}	288	}
276		289
277	fdchangecnt = 0;	290	fdchangecnt = 0;
278	}	291	}
279		292
280	static void	293	static void
281	fd_change (int fd)	294	fd_change (EV_P_ int fd)
282	{	295	{
283	if (anfds [fd].reify || fdchangecnt < 0)	296	if (anfds [fd].reify || fdchangecnt < 0)
284	return;	297	return;
285		298
286	anfds [fd].reify = 1;	299	anfds [fd].reify = 1;
…		…
289	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	302	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
290	fdchanges [fdchangecnt - 1] = fd;	303	fdchanges [fdchangecnt - 1] = fd;
291	}	304	}
292		305
293	static void	306	static void
294	fd_kill (int fd)	307	fd_kill (EV_P_ int fd)
295	{	308	{
296	struct ev_io *w;	309	struct ev_io *w;
297		310
298	printf ("killing fd %d\n", fd);//D
299	while ((w = anfds [fd].head))	311	while ((w = (struct ev_io *)anfds [fd].head))
300	{	312	{
301	ev_io_stop (w);	313	ev_io_stop (EV_A_ w);
302	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	314	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
303	}	315	}
304	}	316	}
305		317
306	/* called on EBADF to verify fds */	318	/* called on EBADF to verify fds */
307	static void	319	static void
308	fd_ebadf (void)	320	fd_ebadf (EV_P)
309	{	321	{
310	int fd;	322	int fd;
311		323
312	for (fd = 0; fd < anfdmax; ++fd)	324	for (fd = 0; fd < anfdmax; ++fd)
313	if (anfds [fd].events)	325	if (anfds [fd].events)
314	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	326	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
315	fd_kill (fd);	327	fd_kill (EV_A_ fd);
316	}	328	}
317		329
318	/* called on ENOMEM in select/poll to kill some fds and retry */	330	/* called on ENOMEM in select/poll to kill some fds and retry */
319	static void	331	static void
320	fd_enomem (void)	332	fd_enomem (EV_P)
321	{	333	{
322	int fd = anfdmax;	334	int fd = anfdmax;
323		335
324	while (fd--)	336	while (fd--)
325	if (anfds [fd].events)	337	if (anfds [fd].events)
326	{	338	{
327	close (fd);	339	close (fd);
328	fd_kill (fd);	340	fd_kill (EV_A_ fd);
329	return;	341	return;
330	}	342	}
331	}	343	}
332		344
		345	/* susually called after fork if method needs to re-arm all fds from scratch */
		346	static void
		347	fd_rearm_all (EV_P)
		348	{
		349	int fd;
		350
		351	/* this should be highly optimised to not do anything but set a flag */
		352	for (fd = 0; fd < anfdmax; ++fd)
		353	if (anfds [fd].events)
		354	{
		355	anfds [fd].events = 0;
		356	fd_change (fd);
		357	}
		358	}
		359
333	/*****************************************************************************/	360	/*****************************************************************************/
334		361
335	static struct ev_timer **timers;
336	static int timermax, timercnt;
337
338	static struct ev_periodic **periodics;
339	static int periodicmax, periodiccnt;
340
341	static void	362	static void
342	upheap (WT *timers, int k)	363	upheap (WT *heap, int k)
343	{	364	{
344	WT w = timers [k];	365	WT w = heap [k];
345		366
346	while (k && timers [k >> 1]->at > w->at)	367	while (k && heap [k >> 1]->at > w->at)
347	{	368	{
348	timers [k] = timers [k >> 1];	369	heap [k] = heap [k >> 1];
349	timers [k]->active = k + 1;	370	heap [k]->active = k + 1;
350	k >>= 1;	371	k >>= 1;
351	}	372	}
352		373
353	timers [k] = w;	374	heap [k] = w;
354	timers [k]->active = k + 1;	375	heap [k]->active = k + 1;
355		376
356	}	377	}
357		378
358	static void	379	static void
359	downheap (WT *timers, int N, int k)	380	downheap (WT *heap, int N, int k)
360	{	381	{
361	WT w = timers [k];	382	WT w = heap [k];
362		383
363	while (k < (N >> 1))	384	while (k < (N >> 1))
364	{	385	{
365	int j = k << 1;	386	int j = k << 1;
366		387
367	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	388	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
368	++j;	389	++j;
369		390
370	if (w->at <= timers [j]->at)	391	if (w->at <= heap [j]->at)
371	break;	392	break;
372		393
373	timers [k] = timers [j];	394	heap [k] = heap [j];
374	timers [k]->active = k + 1;	395	heap [k]->active = k + 1;
375	k = j;	396	k = j;
376	}	397	}
377		398
378	timers [k] = w;	399	heap [k] = w;
379	timers [k]->active = k + 1;	400	heap [k]->active = k + 1;
380	}	401	}
381		402
382	/*****************************************************************************/	403	/*****************************************************************************/
383		404
384	typedef struct	405	typedef struct
385	{	406	{
386	struct ev_signal *head;	407	struct ev_watcher_list *head;
387	sig_atomic_t volatile gotsig;	408	sig_atomic_t volatile gotsig;
388	} ANSIG;	409	} ANSIG;
389		410
390	static ANSIG *signals;	411	static ANSIG *signals;
391	static int signalmax;	412	static int signalmax;
392		413
393	static int sigpipe [2];	414	static int sigpipe [2];
394	static sig_atomic_t volatile gotsig;	415	static sig_atomic_t volatile gotsig;
395	static struct ev_io sigev;
396		416
397	static void	417	static void
398	signals_init (ANSIG *base, int count)	418	signals_init (ANSIG *base, int count)
399	{	419	{
400	while (count--)	420	while (count--)
…		…
411	{	431	{
412	signals [signum - 1].gotsig = 1;	432	signals [signum - 1].gotsig = 1;
413		433
414	if (!gotsig)	434	if (!gotsig)
415	{	435	{
		436	int old_errno = errno;
416	gotsig = 1;	437	gotsig = 1;
417	write (sigpipe [1], &signum, 1);	438	write (sigpipe [1], &signum, 1);
		439	errno = old_errno;
418	}	440	}
419	}	441	}
420		442
421	static void	443	static void
422	sigcb (struct ev_io *iow, int revents)	444	sigcb (EV_P_ struct ev_io *iow, int revents)
423	{	445	{
424	struct ev_signal *w;	446	struct ev_watcher_list *w;
425	int signum;	447	int signum;
426		448
427	read (sigpipe [0], &revents, 1);	449	read (sigpipe [0], &revents, 1);
428	gotsig = 0;	450	gotsig = 0;
429		451
…		…
431	if (signals [signum].gotsig)	453	if (signals [signum].gotsig)
432	{	454	{
433	signals [signum].gotsig = 0;	455	signals [signum].gotsig = 0;
434		456
435	for (w = signals [signum].head; w; w = w->next)	457	for (w = signals [signum].head; w; w = w->next)
436	event ((W)w, EV_SIGNAL);	458	event (EV_A_ (W)w, EV_SIGNAL);
437	}	459	}
438	}	460	}
439		461
440	static void	462	static void
441	siginit (void)	463	siginit (EV_P)
442	{	464	{
		465	#ifndef WIN32
443	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	466	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
444	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	467	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
445		468
446	/* rather than sort out wether we really need nb, set it */	469	/* rather than sort out wether we really need nb, set it */
447	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	470	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
448	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	471	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		472	#endif
449		473
450	ev_io_set (&sigev, sigpipe [0], EV_READ);	474	ev_io_set (&sigev, sigpipe [0], EV_READ);
451	ev_io_start (&sigev);	475	ev_io_start (EV_A_ &sigev);
		476	ev_unref (EV_A); /* child watcher should not keep loop alive */
452	}	477	}
453		478
454	/*****************************************************************************/	479	/*****************************************************************************/
455		480
456	static struct ev_idle **idles;	481	#ifndef WIN32
457	static int idlemax, idlecnt;
458
459	static struct ev_prepare **prepares;
460	static int preparemax, preparecnt;
461
462	static struct ev_check **checks;
463	static int checkmax, checkcnt;
464
465	/*****************************************************************************/
466
467	static struct ev_child *childs [PID_HASHSIZE];
468	static struct ev_signal childev;
469		482
470	#ifndef WCONTINUED	483	#ifndef WCONTINUED
471	# define WCONTINUED 0	484	# define WCONTINUED 0
472	#endif	485	#endif
473		486
474	static void	487	static void
475	childcb (struct ev_signal *sw, int revents)	488	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
476	{	489	{
477	struct ev_child *w;	490	struct ev_child *w;
		491
		492	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		493	if (w->pid == pid || !w->pid)
		494	{
		495	w->priority = sw->priority; /* need to do it *now* */
		496	w->rpid = pid;
		497	w->rstatus = status;
		498	event (EV_A_ (W)w, EV_CHILD);
		499	}
		500	}
		501
		502	static void
		503	childcb (EV_P_ struct ev_signal *sw, int revents)
		504	{
478	int pid, status;	505	int pid, status;
479		506
480	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	507	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
481	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	508	{
482	if (w->pid == pid || !w->pid)	509	/* make sure we are called again until all childs have been reaped */
483	{	510	event (EV_A_ (W)sw, EV_SIGNAL);
484	w->status = status;	511
485	event ((W)w, EV_CHILD);	512	child_reap (EV_A_ sw, pid, pid, status);
486	}	513	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		514	}
487	}	515	}
		516
		517	#endif
488		518
489	/*****************************************************************************/	519	/*****************************************************************************/
490		520
491	#if EV_USE_KQUEUE	521	#if EV_USE_KQUEUE
492	# include "ev_kqueue.c"	522	# include "ev_kqueue.c"
493	#endif	523	#endif
494	#if EV_USE_EPOLL	524	#if EV_USE_EPOLL
495	# include "ev_epoll.c"	525	# include "ev_epoll.c"
496	#endif	526	#endif
497	#if EV_USE_POLL	527	#if EV_USEV_POLL
498	# include "ev_poll.c"	528	# include "ev_poll.c"
499	#endif	529	#endif
500	#if EV_USE_SELECT	530	#if EV_USE_SELECT
501	# include "ev_select.c"	531	# include "ev_select.c"
502	#endif	532	#endif
…		…
511	ev_version_minor (void)	541	ev_version_minor (void)
512	{	542	{
513	return EV_VERSION_MINOR;	543	return EV_VERSION_MINOR;
514	}	544	}
515		545
516	/* return true if we are running with elevated privileges and ignore env variables */	546	/* return true if we are running with elevated privileges and should ignore env variables */
517	static int	547	static int
518	enable_secure ()	548	enable_secure (void)
519	{	549	{
		550	#ifdef WIN32
		551	return 0;
		552	#else
520	return getuid () != geteuid ()	553	return getuid () != geteuid ()
521	|| getgid () != getegid ();	554	|| getgid () != getegid ();
		555	#endif
522	}	556	}
523		557
524	int ev_init (int methods)	558	int
		559	ev_method (EV_P)
525	{	560	{
		561	return method;
		562	}
		563
		564	static void
		565	loop_init (EV_P_ int methods)
		566	{
526	if (!ev_method)	567	if (!method)
527	{	568	{
528	#if EV_USE_MONOTONIC	569	#if EV_USE_MONOTONIC
529	{	570	{
530	struct timespec ts;	571	struct timespec ts;
531	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	572	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
532	have_monotonic = 1;	573	have_monotonic = 1;
533	}	574	}
534	#endif	575	#endif
535		576
536	ev_now = ev_time ();	577	rt_now = ev_time ();
537	now = get_clock ();	578	mn_now = get_clock ();
538	now_floor = now;	579	now_floor = mn_now;
539	diff = ev_now - now;	580	rtmn_diff = rt_now - mn_now;
540
541	if (pipe (sigpipe))
542	return 0;
543		581
544	if (methods == EVMETHOD_AUTO)	582	if (methods == EVMETHOD_AUTO)
545	if (!enable_secure () && getenv ("LIBEV_METHODS"))	583	if (!enable_secure () && getenv ("LIBEV_METHODS"))
546	methods = atoi (getenv ("LIBEV_METHODS"));	584	methods = atoi (getenv ("LIBEV_METHODS"));
547	else	585	else
548	methods = EVMETHOD_ANY;	586	methods = EVMETHOD_ANY;
549		587
550	ev_method = 0;	588	method = 0;
551	#if EV_USE_KQUEUE	589	#if EV_USE_KQUEUE
552	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	590	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
553	#endif	591	#endif
554	#if EV_USE_EPOLL	592	#if EV_USE_EPOLL
555	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	593	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
556	#endif	594	#endif
557	#if EV_USE_POLL	595	#if EV_USEV_POLL
558	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	596	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
559	#endif	597	#endif
560	#if EV_USE_SELECT	598	#if EV_USE_SELECT
561	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	599	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
562	#endif	600	#endif
		601	}
		602	}
563		603
		604	void
		605	loop_destroy (EV_P)
		606	{
		607	#if EV_USE_KQUEUE
		608	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		609	#endif
		610	#if EV_USE_EPOLL
		611	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		612	#endif
		613	#if EV_USEV_POLL
		614	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		615	#endif
		616	#if EV_USE_SELECT
		617	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		618	#endif
		619
		620	method = 0;
		621	/*TODO*/
		622	}
		623
		624	void
		625	loop_fork (EV_P)
		626	{
		627	/*TODO*/
		628	#if EV_USE_EPOLL
		629	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		630	#endif
		631	#if EV_USE_KQUEUE
		632	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		633	#endif
		634	}
		635
		636	#if EV_MULTIPLICITY
		637	struct ev_loop *
		638	ev_loop_new (int methods)
		639	{
		640	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));
		641
		642	loop_init (EV_A_ methods);
		643
		644	if (ev_methods (EV_A))
		645	return loop;
		646
		647	return 0;
		648	}
		649
		650	void
		651	ev_loop_destroy (EV_P)
		652	{
		653	loop_destroy (EV_A);
		654	free (loop);
		655	}
		656
		657	void
		658	ev_loop_fork (EV_P)
		659	{
		660	loop_fork (EV_A);
		661	}
		662
		663	#endif
		664
		665	#if EV_MULTIPLICITY
		666	struct ev_loop default_loop_struct;
		667	static struct ev_loop *default_loop;
		668
		669	struct ev_loop *
		670	#else
		671	static int default_loop;
		672
		673	int
		674	#endif
		675	ev_default_loop (int methods)
		676	{
		677	if (sigpipe [0] == sigpipe [1])
		678	if (pipe (sigpipe))
		679	return 0;
		680
		681	if (!default_loop)
		682	{
		683	#if EV_MULTIPLICITY
		684	struct ev_loop *loop = default_loop = &default_loop_struct;
		685	#else
		686	default_loop = 1;
		687	#endif
		688
		689	loop_init (EV_A_ methods);
		690
564	if (ev_method)	691	if (ev_method (EV_A))
565	{	692	{
566	ev_watcher_init (&sigev, sigcb);	693	ev_watcher_init (&sigev, sigcb);
		694	ev_set_priority (&sigev, EV_MAXPRI);
567	siginit ();	695	siginit (EV_A);
568		696
		697	#ifndef WIN32
569	ev_signal_init (&childev, childcb, SIGCHLD);	698	ev_signal_init (&childev, childcb, SIGCHLD);
		699	ev_set_priority (&childev, EV_MAXPRI);
570	ev_signal_start (&childev);	700	ev_signal_start (EV_A_ &childev);
		701	ev_unref (EV_A); /* child watcher should not keep loop alive */
		702	#endif
571	}	703	}
		704	else
		705	default_loop = 0;
572	}	706	}
573		707
574	return ev_method;	708	return default_loop;
575	}	709	}
576		710
577	/*****************************************************************************/
578
579	void	711	void
580	ev_fork_prepare (void)	712	ev_default_destroy (void)
581	{	713	{
582	/* nop */	714	#if EV_MULTIPLICITY
583	}	715	struct ev_loop *loop = default_loop;
584
585	void
586	ev_fork_parent (void)
587	{
588	/* nop */
589	}
590
591	void
592	ev_fork_child (void)
593	{
594	#if EV_USE_EPOLL
595	if (ev_method == EVMETHOD_EPOLL)
596	epoll_postfork_child ();
597	#endif	716	#endif
598		717
		718	ev_ref (EV_A); /* child watcher */
		719	ev_signal_stop (EV_A_ &childev);
		720
		721	ev_ref (EV_A); /* signal watcher */
599	ev_io_stop (&sigev);	722	ev_io_stop (EV_A_ &sigev);
		723
		724	close (sigpipe [0]); sigpipe [0] = 0;
		725	close (sigpipe [1]); sigpipe [1] = 0;
		726
		727	loop_destroy (EV_A);
		728	}
		729
		730	void
		731	ev_default_fork (EV_P)
		732	{
		733	loop_fork (EV_A);
		734
		735	ev_io_stop (EV_A_ &sigev);
600	close (sigpipe [0]);	736	close (sigpipe [0]);
601	close (sigpipe [1]);	737	close (sigpipe [1]);
602	pipe (sigpipe);	738	pipe (sigpipe);
		739
		740	ev_ref (EV_A); /* signal watcher */
603	siginit ();	741	siginit (EV_A);
604	}	742	}
605		743
606	/*****************************************************************************/	744	/*****************************************************************************/
607		745
608	static void	746	static void
609	call_pending (void)	747	call_pending (EV_P)
610	{	748	{
611	int pri;	749	int pri;
612		750
613	for (pri = NUMPRI; pri--; )	751	for (pri = NUMPRI; pri--; )
614	while (pendingcnt [pri])	752	while (pendingcnt [pri])
…		…
616	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	754	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
617		755
618	if (p->w)	756	if (p->w)
619	{	757	{
620	p->w->pending = 0;	758	p->w->pending = 0;
621	p->w->cb (p->w, p->events);	759	p->w->cb (EV_A_ p->w, p->events);
622	}	760	}
623	}	761	}
624	}	762	}
625		763
626	static void	764	static void
627	timers_reify (void)	765	timers_reify (EV_P)
628	{	766	{
629	while (timercnt && timers [0]->at <= now)	767	while (timercnt && timers [0]->at <= mn_now)
630	{	768	{
631	struct ev_timer *w = timers [0];	769	struct ev_timer *w = timers [0];
632		770
633	/* first reschedule or stop timer */	771	/* first reschedule or stop timer */
634	if (w->repeat)	772	if (w->repeat)
635	{	773	{
636	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	774	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
637	w->at = now + w->repeat;	775	w->at = mn_now + w->repeat;
638	downheap ((WT *)timers, timercnt, 0);	776	downheap ((WT *)timers, timercnt, 0);
639	}	777	}
640	else	778	else
641	ev_timer_stop (w); /* nonrepeating: stop timer */	779	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
642		780
643	event ((W)w, EV_TIMEOUT);	781	event (EV_A_ (W)w, EV_TIMEOUT);
644	}	782	}
645	}	783	}
646		784
647	static void	785	static void
648	periodics_reify (void)	786	periodics_reify (EV_P)
649	{	787	{
650	while (periodiccnt && periodics [0]->at <= ev_now)	788	while (periodiccnt && periodics [0]->at <= rt_now)
651	{	789	{
652	struct ev_periodic *w = periodics [0];	790	struct ev_periodic *w = periodics [0];
653		791
654	/* first reschedule or stop timer */	792	/* first reschedule or stop timer */
655	if (w->interval)	793	if (w->interval)
656	{	794	{
657	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	795	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;
658	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	796	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
659	downheap ((WT *)periodics, periodiccnt, 0);	797	downheap ((WT *)periodics, periodiccnt, 0);
660	}	798	}
661	else	799	else
662	ev_periodic_stop (w); /* nonrepeating: stop timer */	800	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
663		801
664	event ((W)w, EV_PERIODIC);	802	event (EV_A_ (W)w, EV_PERIODIC);
665	}	803	}
666	}	804	}
667		805
668	static void	806	static void
669	periodics_reschedule (ev_tstamp diff)	807	periodics_reschedule (EV_P)
670	{	808	{
671	int i;	809	int i;
672		810
673	/* adjust periodics after time jump */	811	/* adjust periodics after time jump */
674	for (i = 0; i < periodiccnt; ++i)	812	for (i = 0; i < periodiccnt; ++i)
675	{	813	{
676	struct ev_periodic *w = periodics [i];	814	struct ev_periodic *w = periodics [i];
677		815
678	if (w->interval)	816	if (w->interval)
679	{	817	{
680	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	818	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
681		819
682	if (fabs (diff) >= 1e-4)	820	if (fabs (diff) >= 1e-4)
683	{	821	{
684	ev_periodic_stop (w);	822	ev_periodic_stop (EV_A_ w);
685	ev_periodic_start (w);	823	ev_periodic_start (EV_A_ w);
686		824
687	i = 0; /* restart loop, inefficient, but time jumps should be rare */	825	i = 0; /* restart loop, inefficient, but time jumps should be rare */
688	}	826	}
689	}	827	}
690	}	828	}
691	}	829	}
692		830
693	static int	831	inline int
694	time_update_monotonic (void)	832	time_update_monotonic (EV_P)
695	{	833	{
696	now = get_clock ();	834	mn_now = get_clock ();
697		835
698	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	836	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
699	{	837	{
700	ev_now = now + diff;	838	rt_now = rtmn_diff + mn_now;
701	return 0;	839	return 0;
702	}	840	}
703	else	841	else
704	{	842	{
705	now_floor = now;	843	now_floor = mn_now;
706	ev_now = ev_time ();	844	rt_now = ev_time ();
707	return 1;	845	return 1;
708	}	846	}
709	}	847	}
710		848
711	static void	849	static void
712	time_update (void)	850	time_update (EV_P)
713	{	851	{
714	int i;	852	int i;
715		853
716	#if EV_USE_MONOTONIC	854	#if EV_USE_MONOTONIC
717	if (expect_true (have_monotonic))	855	if (expect_true (have_monotonic))
718	{	856	{
719	if (time_update_monotonic ())	857	if (time_update_monotonic (EV_A))
720	{	858	{
721	ev_tstamp odiff = diff;	859	ev_tstamp odiff = rtmn_diff;
722		860
723	for (i = 4; --i; ) /* loop a few times, before making important decisions */	861	for (i = 4; --i; ) /* loop a few times, before making important decisions */
724	{	862	{
725	diff = ev_now - now;	863	rtmn_diff = rt_now - mn_now;
726		864
727	if (fabs (odiff - diff) < MIN_TIMEJUMP)	865	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
728	return; /* all is well */	866	return; /* all is well */
729		867
730	ev_now = ev_time ();	868	rt_now = ev_time ();
731	now = get_clock ();	869	mn_now = get_clock ();
732	now_floor = now;	870	now_floor = mn_now;
733	}	871	}
734		872
735	periodics_reschedule (diff - odiff);	873	periodics_reschedule (EV_A);
736	/* no timer adjustment, as the monotonic clock doesn't jump */	874	/* no timer adjustment, as the monotonic clock doesn't jump */
		875	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
737	}	876	}
738	}	877	}
739	else	878	else
740	#endif	879	#endif
741	{	880	{
742	ev_now = ev_time ();	881	rt_now = ev_time ();
743		882
744	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	883	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
745	{	884	{
746	periodics_reschedule (ev_now - now);	885	periodics_reschedule (EV_A);
747		886
748	/* adjust timers. this is easy, as the offset is the same for all */	887	/* adjust timers. this is easy, as the offset is the same for all */
749	for (i = 0; i < timercnt; ++i)	888	for (i = 0; i < timercnt; ++i)
750	timers [i]->at += diff;	889	timers [i]->at += rt_now - mn_now;
751	}	890	}
752		891
753	now = ev_now;	892	mn_now = rt_now;
754	}	893	}
755	}	894	}
756		895
757	int ev_loop_done;	896	void
		897	ev_ref (EV_P)
		898	{
		899	++activecnt;
		900	}
758		901
		902	void
		903	ev_unref (EV_P)
		904	{
		905	--activecnt;
		906	}
		907
		908	static int loop_done;
		909
		910	void
759	void ev_loop (int flags)	911	ev_loop (EV_P_ int flags)
760	{	912	{
761	double block;	913	double block;
762	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	914	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
763		915
764	do	916	do
765	{	917	{
766	/* queue check watchers (and execute them) */	918	/* queue check watchers (and execute them) */
767	if (expect_false (preparecnt))	919	if (expect_false (preparecnt))
768	{	920	{
769	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	921	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
770	call_pending ();	922	call_pending (EV_A);
771	}	923	}
772		924
773	/* update fd-related kernel structures */	925	/* update fd-related kernel structures */
774	fd_reify ();	926	fd_reify (EV_A);
775		927
776	/* calculate blocking time */	928	/* calculate blocking time */
777		929
778	/* we only need this for !monotonic clockor timers, but as we basically	930	/* we only need this for !monotonic clockor timers, but as we basically
779	always have timers, we just calculate it always */	931	always have timers, we just calculate it always */
780	#if EV_USE_MONOTONIC	932	#if EV_USE_MONOTONIC
781	if (expect_true (have_monotonic))	933	if (expect_true (have_monotonic))
782	time_update_monotonic ();	934	time_update_monotonic (EV_A);
783	else	935	else
784	#endif	936	#endif
785	{	937	{
786	ev_now = ev_time ();	938	rt_now = ev_time ();
787	now = ev_now;	939	mn_now = rt_now;
788	}	940	}
789		941
790	if (flags & EVLOOP_NONBLOCK || idlecnt)	942	if (flags & EVLOOP_NONBLOCK || idlecnt)
791	block = 0.;	943	block = 0.;
792	else	944	else
793	{	945	{
794	block = MAX_BLOCKTIME;	946	block = MAX_BLOCKTIME;
795		947
796	if (timercnt)	948	if (timercnt)
797	{	949	{
798	ev_tstamp to = timers [0]->at - now + method_fudge;	950	ev_tstamp to = timers [0]->at - mn_now + method_fudge;
799	if (block > to) block = to;	951	if (block > to) block = to;
800	}	952	}
801		953
802	if (periodiccnt)	954	if (periodiccnt)
803	{	955	{
804	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	956	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
805	if (block > to) block = to;	957	if (block > to) block = to;
806	}	958	}
807		959
808	if (block < 0.) block = 0.;	960	if (block < 0.) block = 0.;
809	}	961	}
810		962
811	method_poll (block);	963	method_poll (EV_A_ block);
812		964
813	/* update ev_now, do magic */	965	/* update rt_now, do magic */
814	time_update ();	966	time_update (EV_A);
815		967
816	/* queue pending timers and reschedule them */	968	/* queue pending timers and reschedule them */
817	timers_reify (); /* relative timers called last */	969	timers_reify (EV_A); /* relative timers called last */
818	periodics_reify (); /* absolute timers called first */	970	periodics_reify (EV_A); /* absolute timers called first */
819		971
820	/* queue idle watchers unless io or timers are pending */	972	/* queue idle watchers unless io or timers are pending */
821	if (!pendingcnt)	973	if (!pendingcnt)
822	queue_events ((W *)idles, idlecnt, EV_IDLE);	974	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
823		975
824	/* queue check watchers, to be executed first */	976	/* queue check watchers, to be executed first */
825	if (checkcnt)	977	if (checkcnt)
826	queue_events ((W *)checks, checkcnt, EV_CHECK);	978	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
827		979
828	call_pending ();	980	call_pending (EV_A);
829	}	981	}
830	while (!ev_loop_done);	982	while (activecnt && !loop_done);
831		983
832	if (ev_loop_done != 2)	984	if (loop_done != 2)
833	ev_loop_done = 0;	985	loop_done = 0;
		986	}
		987
		988	void
		989	ev_unloop (EV_P_ int how)
		990	{
		991	loop_done = how;
834	}	992	}
835		993
836	/*****************************************************************************/	994	/*****************************************************************************/
837		995
838	static void	996	inline void
839	wlist_add (WL *head, WL elem)	997	wlist_add (WL *head, WL elem)
840	{	998	{
841	elem->next = *head;	999	elem->next = *head;
842	*head = elem;	1000	*head = elem;
843	}	1001	}
844		1002
845	static void	1003	inline void
846	wlist_del (WL *head, WL elem)	1004	wlist_del (WL *head, WL elem)
847	{	1005	{
848	while (*head)	1006	while (*head)
849	{	1007	{
850	if (*head == elem)	1008	if (*head == elem)
…		…
855		1013
856	head = &(*head)->next;	1014	head = &(*head)->next;
857	}	1015	}
858	}	1016	}
859		1017
860	static void	1018	inline void
861	ev_clear_pending (W w)	1019	ev_clear_pending (EV_P_ W w)
862	{	1020	{
863	if (w->pending)	1021	if (w->pending)
864	{	1022	{
865	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1023	pendings [ABSPRI (w)][w->pending - 1].w = 0;
866	w->pending = 0;	1024	w->pending = 0;
867	}	1025	}
868	}	1026	}
869		1027
870	static void	1028	inline void
871	ev_start (W w, int active)	1029	ev_start (EV_P_ W w, int active)
872	{	1030	{
873	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1031	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
874	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1032	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
875		1033
876	w->active = active;	1034	w->active = active;
		1035	ev_ref (EV_A);
877	}	1036	}
878		1037
879	static void	1038	inline void
880	ev_stop (W w)	1039	ev_stop (EV_P_ W w)
881	{	1040	{
		1041	ev_unref (EV_A);
882	w->active = 0;	1042	w->active = 0;
883	}	1043	}
884		1044
885	/*****************************************************************************/	1045	/*****************************************************************************/
886		1046
887	void	1047	void
888	ev_io_start (struct ev_io *w)	1048	ev_io_start (EV_P_ struct ev_io *w)
889	{	1049	{
890	int fd = w->fd;	1050	int fd = w->fd;
891		1051
892	if (ev_is_active (w))	1052	if (ev_is_active (w))
893	return;	1053	return;
894		1054
895	assert (("ev_io_start called with negative fd", fd >= 0));	1055	assert (("ev_io_start called with negative fd", fd >= 0));
896		1056
897	ev_start ((W)w, 1);	1057	ev_start (EV_A_ (W)w, 1);
898	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1058	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
899	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1059	wlist_add ((WL *)&anfds[fd].head, (WL)w);
900		1060
901	fd_change (fd);	1061	fd_change (EV_A_ fd);
902	}	1062	}
903		1063
904	void	1064	void
905	ev_io_stop (struct ev_io *w)	1065	ev_io_stop (EV_P_ struct ev_io *w)
906	{	1066	{
907	ev_clear_pending ((W)w);	1067	ev_clear_pending (EV_A_ (W)w);
908	if (!ev_is_active (w))	1068	if (!ev_is_active (w))
909	return;	1069	return;
910		1070
911	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1071	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
912	ev_stop ((W)w);	1072	ev_stop (EV_A_ (W)w);
913		1073
914	fd_change (w->fd);	1074	fd_change (EV_A_ w->fd);
915	}	1075	}
916		1076
917	void	1077	void
918	ev_timer_start (struct ev_timer *w)	1078	ev_timer_start (EV_P_ struct ev_timer *w)
919	{	1079	{
920	if (ev_is_active (w))	1080	if (ev_is_active (w))
921	return;	1081	return;
922		1082
923	w->at += now;	1083	w->at += mn_now;
924		1084
925	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1085	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
926		1086
927	ev_start ((W)w, ++timercnt);	1087	ev_start (EV_A_ (W)w, ++timercnt);
928	array_needsize (timers, timermax, timercnt, );	1088	array_needsize (timers, timermax, timercnt, );
929	timers [timercnt - 1] = w;	1089	timers [timercnt - 1] = w;
930	upheap ((WT *)timers, timercnt - 1);	1090	upheap ((WT *)timers, timercnt - 1);
931	}	1091	}
932		1092
933	void	1093	void
934	ev_timer_stop (struct ev_timer *w)	1094	ev_timer_stop (EV_P_ struct ev_timer *w)
935	{	1095	{
936	ev_clear_pending ((W)w);	1096	ev_clear_pending (EV_A_ (W)w);
937	if (!ev_is_active (w))	1097	if (!ev_is_active (w))
938	return;	1098	return;
939		1099
940	if (w->active < timercnt--)	1100	if (w->active < timercnt--)
941	{	1101	{
…		…
943	downheap ((WT *)timers, timercnt, w->active - 1);	1103	downheap ((WT *)timers, timercnt, w->active - 1);
944	}	1104	}
945		1105
946	w->at = w->repeat;	1106	w->at = w->repeat;
947		1107
948	ev_stop ((W)w);	1108	ev_stop (EV_A_ (W)w);
949	}	1109	}
950		1110
951	void	1111	void
952	ev_timer_again (struct ev_timer *w)	1112	ev_timer_again (EV_P_ struct ev_timer *w)
953	{	1113	{
954	if (ev_is_active (w))	1114	if (ev_is_active (w))
955	{	1115	{
956	if (w->repeat)	1116	if (w->repeat)
957	{	1117	{
958	w->at = now + w->repeat;	1118	w->at = mn_now + w->repeat;
959	downheap ((WT *)timers, timercnt, w->active - 1);	1119	downheap ((WT *)timers, timercnt, w->active - 1);
960	}	1120	}
961	else	1121	else
962	ev_timer_stop (w);	1122	ev_timer_stop (EV_A_ w);
963	}	1123	}
964	else if (w->repeat)	1124	else if (w->repeat)
965	ev_timer_start (w);	1125	ev_timer_start (EV_A_ w);
966	}	1126	}
967		1127
968	void	1128	void
969	ev_periodic_start (struct ev_periodic *w)	1129	ev_periodic_start (EV_P_ struct ev_periodic *w)
970	{	1130	{
971	if (ev_is_active (w))	1131	if (ev_is_active (w))
972	return;	1132	return;
973		1133
974	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1134	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
975		1135
976	/* this formula differs from the one in periodic_reify because we do not always round up */	1136	/* this formula differs from the one in periodic_reify because we do not always round up */
977	if (w->interval)	1137	if (w->interval)
978	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1138	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
979		1139
980	ev_start ((W)w, ++periodiccnt);	1140	ev_start (EV_A_ (W)w, ++periodiccnt);
981	array_needsize (periodics, periodicmax, periodiccnt, );	1141	array_needsize (periodics, periodicmax, periodiccnt, );
982	periodics [periodiccnt - 1] = w;	1142	periodics [periodiccnt - 1] = w;
983	upheap ((WT *)periodics, periodiccnt - 1);	1143	upheap ((WT *)periodics, periodiccnt - 1);
984	}	1144	}
985		1145
986	void	1146	void
987	ev_periodic_stop (struct ev_periodic *w)	1147	ev_periodic_stop (EV_P_ struct ev_periodic *w)
988	{	1148	{
989	ev_clear_pending ((W)w);	1149	ev_clear_pending (EV_A_ (W)w);
990	if (!ev_is_active (w))	1150	if (!ev_is_active (w))
991	return;	1151	return;
992		1152
993	if (w->active < periodiccnt--)	1153	if (w->active < periodiccnt--)
994	{	1154	{
995	periodics [w->active - 1] = periodics [periodiccnt];	1155	periodics [w->active - 1] = periodics [periodiccnt];
996	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1156	downheap ((WT *)periodics, periodiccnt, w->active - 1);
997	}	1157	}
998		1158
999	ev_stop ((W)w);	1159	ev_stop (EV_A_ (W)w);
1000	}	1160	}
1001		1161
1002	void	1162	void
1003	ev_signal_start (struct ev_signal *w)	1163	ev_idle_start (EV_P_ struct ev_idle *w)
1004	{	1164	{
1005	if (ev_is_active (w))	1165	if (ev_is_active (w))
1006	return;	1166	return;
1007		1167
		1168	ev_start (EV_A_ (W)w, ++idlecnt);
		1169	array_needsize (idles, idlemax, idlecnt, );
		1170	idles [idlecnt - 1] = w;
		1171	}
		1172
		1173	void
		1174	ev_idle_stop (EV_P_ struct ev_idle *w)
		1175	{
		1176	ev_clear_pending (EV_A_ (W)w);
		1177	if (ev_is_active (w))
		1178	return;
		1179
		1180	idles [w->active - 1] = idles [--idlecnt];
		1181	ev_stop (EV_A_ (W)w);
		1182	}
		1183
		1184	void
		1185	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1186	{
		1187	if (ev_is_active (w))
		1188	return;
		1189
		1190	ev_start (EV_A_ (W)w, ++preparecnt);
		1191	array_needsize (prepares, preparemax, preparecnt, );
		1192	prepares [preparecnt - 1] = w;
		1193	}
		1194
		1195	void
		1196	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1197	{
		1198	ev_clear_pending (EV_A_ (W)w);
		1199	if (ev_is_active (w))
		1200	return;
		1201
		1202	prepares [w->active - 1] = prepares [--preparecnt];
		1203	ev_stop (EV_A_ (W)w);
		1204	}
		1205
		1206	void
		1207	ev_check_start (EV_P_ struct ev_check *w)
		1208	{
		1209	if (ev_is_active (w))
		1210	return;
		1211
		1212	ev_start (EV_A_ (W)w, ++checkcnt);
		1213	array_needsize (checks, checkmax, checkcnt, );
		1214	checks [checkcnt - 1] = w;
		1215	}
		1216
		1217	void
		1218	ev_check_stop (EV_P_ struct ev_check *w)
		1219	{
		1220	ev_clear_pending (EV_A_ (W)w);
		1221	if (ev_is_active (w))
		1222	return;
		1223
		1224	checks [w->active - 1] = checks [--checkcnt];
		1225	ev_stop (EV_A_ (W)w);
		1226	}
		1227
		1228	#ifndef SA_RESTART
		1229	# define SA_RESTART 0
		1230	#endif
		1231
		1232	void
		1233	ev_signal_start (EV_P_ struct ev_signal *w)
		1234	{
		1235	#if EV_MULTIPLICITY
		1236	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1237	#endif
		1238	if (ev_is_active (w))
		1239	return;
		1240
1008	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1241	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1009		1242
1010	ev_start ((W)w, 1);	1243	ev_start (EV_A_ (W)w, 1);
1011	array_needsize (signals, signalmax, w->signum, signals_init);	1244	array_needsize (signals, signalmax, w->signum, signals_init);
1012	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1245	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1013		1246
1014	if (!w->next)	1247	if (!w->next)
1015	{	1248	{
1016	struct sigaction sa;	1249	struct sigaction sa;
1017	sa.sa_handler = sighandler;	1250	sa.sa_handler = sighandler;
1018	sigfillset (&sa.sa_mask);	1251	sigfillset (&sa.sa_mask);
1019	sa.sa_flags = 0;	1252	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1020	sigaction (w->signum, &sa, 0);	1253	sigaction (w->signum, &sa, 0);
1021	}	1254	}
1022	}	1255	}
1023		1256
1024	void	1257	void
1025	ev_signal_stop (struct ev_signal *w)	1258	ev_signal_stop (EV_P_ struct ev_signal *w)
1026	{	1259	{
1027	ev_clear_pending ((W)w);	1260	ev_clear_pending (EV_A_ (W)w);
1028	if (!ev_is_active (w))	1261	if (!ev_is_active (w))
1029	return;	1262	return;
1030		1263
1031	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1264	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1032	ev_stop ((W)w);	1265	ev_stop (EV_A_ (W)w);
1033		1266
1034	if (!signals [w->signum - 1].head)	1267	if (!signals [w->signum - 1].head)
1035	signal (w->signum, SIG_DFL);	1268	signal (w->signum, SIG_DFL);
1036	}	1269	}
1037		1270
1038	void	1271	void
1039	ev_idle_start (struct ev_idle *w)	1272	ev_child_start (EV_P_ struct ev_child *w)
1040	{	1273	{
		1274	#if EV_MULTIPLICITY
		1275	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1276	#endif
1041	if (ev_is_active (w))	1277	if (ev_is_active (w))
1042	return;	1278	return;
1043		1279
1044	ev_start ((W)w, ++idlecnt);	1280	ev_start (EV_A_ (W)w, 1);
1045	array_needsize (idles, idlemax, idlecnt, );	1281	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1046	idles [idlecnt - 1] = w;
1047	}	1282	}
1048		1283
1049	void	1284	void
1050	ev_idle_stop (struct ev_idle *w)	1285	ev_child_stop (EV_P_ struct ev_child *w)
1051	{	1286	{
1052	ev_clear_pending ((W)w);	1287	ev_clear_pending (EV_A_ (W)w);
1053	if (ev_is_active (w))	1288	if (ev_is_active (w))
1054	return;	1289	return;
1055		1290
1056	idles [w->active - 1] = idles [--idlecnt];
1057	ev_stop ((W)w);
1058	}
1059
1060	void
1061	ev_prepare_start (struct ev_prepare *w)
1062	{
1063	if (ev_is_active (w))
1064	return;
1065
1066	ev_start ((W)w, ++preparecnt);
1067	array_needsize (prepares, preparemax, preparecnt, );
1068	prepares [preparecnt - 1] = w;
1069	}
1070
1071	void
1072	ev_prepare_stop (struct ev_prepare *w)
1073	{
1074	ev_clear_pending ((W)w);
1075	if (ev_is_active (w))
1076	return;
1077
1078	prepares [w->active - 1] = prepares [--preparecnt];
1079	ev_stop ((W)w);
1080	}
1081
1082	void
1083	ev_check_start (struct ev_check *w)
1084	{
1085	if (ev_is_active (w))
1086	return;
1087
1088	ev_start ((W)w, ++checkcnt);
1089	array_needsize (checks, checkmax, checkcnt, );
1090	checks [checkcnt - 1] = w;
1091	}
1092
1093	void
1094	ev_check_stop (struct ev_check *w)
1095	{
1096	ev_clear_pending ((W)w);
1097	if (ev_is_active (w))
1098	return;
1099
1100	checks [w->active - 1] = checks [--checkcnt];
1101	ev_stop ((W)w);
1102	}
1103
1104	void
1105	ev_child_start (struct ev_child *w)
1106	{
1107	if (ev_is_active (w))
1108	return;
1109
1110	ev_start ((W)w, 1);
1111	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1112	}
1113
1114	void
1115	ev_child_stop (struct ev_child *w)
1116	{
1117	ev_clear_pending ((W)w);
1118	if (ev_is_active (w))
1119	return;
1120
1121	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1291	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1122	ev_stop ((W)w);	1292	ev_stop (EV_A_ (W)w);
1123	}	1293	}
1124		1294
1125	/*****************************************************************************/	1295	/*****************************************************************************/
1126		1296
1127	struct ev_once	1297	struct ev_once
…		…
1131	void (*cb)(int revents, void *arg);	1301	void (*cb)(int revents, void *arg);
1132	void *arg;	1302	void *arg;
1133	};	1303	};
1134		1304
1135	static void	1305	static void
1136	once_cb (struct ev_once *once, int revents)	1306	once_cb (EV_P_ struct ev_once *once, int revents)
1137	{	1307	{
1138	void (*cb)(int revents, void *arg) = once->cb;	1308	void (*cb)(int revents, void *arg) = once->cb;
1139	void *arg = once->arg;	1309	void *arg = once->arg;
1140		1310
1141	ev_io_stop (&once->io);	1311	ev_io_stop (EV_A_ &once->io);
1142	ev_timer_stop (&once->to);	1312	ev_timer_stop (EV_A_ &once->to);
1143	free (once);	1313	free (once);
1144		1314
1145	cb (revents, arg);	1315	cb (revents, arg);
1146	}	1316	}
1147		1317
1148	static void	1318	static void
1149	once_cb_io (struct ev_io *w, int revents)	1319	once_cb_io (EV_P_ struct ev_io *w, int revents)
1150	{	1320	{
1151	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1321	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1152	}	1322	}
1153		1323
1154	static void	1324	static void
1155	once_cb_to (struct ev_timer *w, int revents)	1325	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1156	{	1326	{
1157	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1327	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1158	}	1328	}
1159		1329
1160	void	1330	void
1161	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1331	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1162	{	1332	{
1163	struct ev_once *once = malloc (sizeof (struct ev_once));	1333	struct ev_once *once = malloc (sizeof (struct ev_once));
1164		1334
1165	if (!once)	1335	if (!once)
1166	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1336	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
…		…
1171		1341
1172	ev_watcher_init (&once->io, once_cb_io);	1342	ev_watcher_init (&once->io, once_cb_io);
1173	if (fd >= 0)	1343	if (fd >= 0)
1174	{	1344	{
1175	ev_io_set (&once->io, fd, events);	1345	ev_io_set (&once->io, fd, events);
1176	ev_io_start (&once->io);	1346	ev_io_start (EV_A_ &once->io);
1177	}	1347	}
1178		1348
1179	ev_watcher_init (&once->to, once_cb_to);	1349	ev_watcher_init (&once->to, once_cb_to);
1180	if (timeout >= 0.)	1350	if (timeout >= 0.)
1181	{	1351	{
1182	ev_timer_set (&once->to, timeout, 0.);	1352	ev_timer_set (&once->to, timeout, 0.);
1183	ev_timer_start (&once->to);	1353	ev_timer_start (EV_A_ &once->to);
1184	}	1354	}
1185	}	1355	}
1186	}	1356	}
1187		1357
1188	/*****************************************************************************/
1189
1190	#if 0
1191
1192	struct ev_io wio;
1193
1194	static void
1195	sin_cb (struct ev_io *w, int revents)
1196	{
1197	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1198	}
1199
1200	static void
1201	ocb (struct ev_timer *w, int revents)
1202	{
1203	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1204	ev_timer_stop (w);
1205	ev_timer_start (w);
1206	}
1207
1208	static void
1209	scb (struct ev_signal *w, int revents)
1210	{
1211	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1212	ev_io_stop (&wio);
1213	ev_io_start (&wio);
1214	}
1215
1216	static void
1217	gcb (struct ev_signal *w, int revents)
1218	{
1219	fprintf (stderr, "generic %x\n", revents);
1220
1221	}
1222
1223	int main (void)
1224	{
1225	ev_init (0);
1226
1227	ev_io_init (&wio, sin_cb, 0, EV_READ);
1228	ev_io_start (&wio);
1229
1230	struct ev_timer t[10000];
1231
1232	#if 0
1233	int i;
1234	for (i = 0; i < 10000; ++i)
1235	{
1236	struct ev_timer *w = t + i;
1237	ev_watcher_init (w, ocb, i);
1238	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1239	ev_timer_start (w);
1240	if (drand48 () < 0.5)
1241	ev_timer_stop (w);
1242	}
1243	#endif
1244
1245	struct ev_timer t1;
1246	ev_timer_init (&t1, ocb, 5, 10);
1247	ev_timer_start (&t1);
1248
1249	struct ev_signal sig;
1250	ev_signal_init (&sig, scb, SIGQUIT);
1251	ev_signal_start (&sig);
1252
1253	struct ev_check cw;
1254	ev_check_init (&cw, gcb);
1255	ev_check_start (&cw);
1256
1257	struct ev_idle iw;
1258	ev_idle_init (&iw, gcb);
1259	ev_idle_start (&iw);
1260
1261	ev_loop (0);
1262
1263	return 0;
1264	}
1265
1266	#endif
1267
1268
1269
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