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Comparing libev/ev.c (file contents):
Revision 1.79 by root, Fri Nov 9 15:15:20 2007 UTC vs.
Revision 1.136 by root, Sat Nov 24 07:14:26 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
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
33		42
34	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
37	# endif	57	# endif
38		58
		59	# ifndef EV_USE_SELECT
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
40	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
41	# endif	65	# endif
42		66
		67	# ifndef EV_USE_POLL
43	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
44	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
45	# endif	73	# endif
46		74
		75	# ifndef EV_USE_EPOLL
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
49	# endif	81	# endif
50		82
		83	# ifndef EV_USE_KQUEUE
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
53	# endif	97	# endif
54		98
55	#endif	99	#endif
56		100
57	#include <math.h>	101	#include <math.h>
…		…
66	#include <sys/types.h>	110	#include <sys/types.h>
67	#include <time.h>	111	#include <time.h>
68		112
69	#include <signal.h>	113	#include <signal.h>
70		114
71	#ifndef WIN32	115	#ifndef _WIN32
72	# include <unistd.h>	116	# include <unistd.h>
73	# include <sys/time.h>	117	# include <sys/time.h>
74	# include <sys/wait.h>	118	# include <sys/wait.h>
		119	#else
		120	# define WIN32_LEAN_AND_MEAN
		121	# include <windows.h>
		122	# ifndef EV_SELECT_IS_WINSOCKET
		123	# define EV_SELECT_IS_WINSOCKET 1
75	#endif	124	# endif
		125	#endif
		126
76	/**/	127	/**/
77		128
78	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
79	# define EV_USE_MONOTONIC 1	130	# define EV_USE_MONOTONIC 0
		131	#endif
		132
		133	#ifndef EV_USE_REALTIME
		134	# define EV_USE_REALTIME 0
80	#endif	135	#endif
81		136
82	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
83	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
84	#endif	139	#endif
85		140
86	#ifndef EV_USE_POLL	141	#ifndef EV_USE_POLL
87	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	142	# ifdef _WIN32
		143	# define EV_USE_POLL 0
		144	# else
		145	# define EV_USE_POLL 1
		146	# endif
88	#endif	147	#endif
89		148
90	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
91	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
92	#endif	151	#endif
93		152
94	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
95	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
96	#endif	155	#endif
97		156
98	#ifndef EV_USE_WIN32
99	# ifdef WIN32
100	# define EV_USE_WIN32 0 /* it does not exist, use select */
101	# undef EV_USE_SELECT
102	# define EV_USE_SELECT 1
103	# else
104	# define EV_USE_WIN32 0
105	# endif
106	#endif
107
108	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
109	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
110	#endif	159	#endif
111		160
112	/**/	161	/**/
113		162
114	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
119	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
120	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
121	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
122	#endif	171	#endif
123		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
124	/**/	177	/**/
125		178
126	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	179	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
127	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	180	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
128	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	181	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
129	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	182	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
130		183
		184	#ifdef EV_H
		185	# include EV_H
		186	#else
131	#include "ev.h"	187	# include "ev.h"
		188	#endif
132		189
133	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
134	# define expect(expr,value) __builtin_expect ((expr),(value))	191	# define expect(expr,value) __builtin_expect ((expr),(value))
135	# define inline inline	192	# define inline static inline
136	#else	193	#else
137	# define expect(expr,value) (expr)	194	# define expect(expr,value) (expr)
138	# define inline static	195	# define inline static
139	#endif	196	#endif
140		197
…		…
142	#define expect_true(expr) expect ((expr) != 0, 1)	199	#define expect_true(expr) expect ((expr) != 0, 1)
143		200
144	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	201	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
145	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	202	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
146		203
		204	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		205	#define EMPTY2(a,b) /* used to suppress some warnings */
		206
147	typedef struct ev_watcher *W;	207	typedef ev_watcher *W;
148	typedef struct ev_watcher_list *WL;	208	typedef ev_watcher_list *WL;
149	typedef struct ev_watcher_time *WT;	209	typedef ev_watcher_time *WT;
150		210
151	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	211	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
152		212
		213	#ifdef _WIN32
153	#include "ev_win32.c"	214	# include "ev_win32.c"
		215	#endif
154		216
155	/*****************************************************************************/	217	/*****************************************************************************/
156		218
157	static void (*syserr_cb)(const char *msg);	219	static void (*syserr_cb)(const char *msg);
158		220
…		…
205	typedef struct	267	typedef struct
206	{	268	{
207	WL head;	269	WL head;
208	unsigned char events;	270	unsigned char events;
209	unsigned char reify;	271	unsigned char reify;
		272	#if EV_SELECT_IS_WINSOCKET
		273	SOCKET handle;
		274	#endif
210	} ANFD;	275	} ANFD;
211		276
212	typedef struct	277	typedef struct
213	{	278	{
214	W w;	279	W w;
215	int events;	280	int events;
216	} ANPENDING;	281	} ANPENDING;
217		282
218	#if EV_MULTIPLICITY	283	#if EV_MULTIPLICITY
219		284
220	struct ev_loop	285	struct ev_loop
221	{	286	{
		287	ev_tstamp ev_rt_now;
		288	#define ev_rt_now ((loop)->ev_rt_now)
222	# define VAR(name,decl) decl;	289	#define VAR(name,decl) decl;
223	# include "ev_vars.h"	290	#include "ev_vars.h"
224	};
225	# undef VAR	291	#undef VAR
		292	};
226	# include "ev_wrap.h"	293	#include "ev_wrap.h"
		294
		295	static struct ev_loop default_loop_struct;
		296	struct ev_loop *ev_default_loop_ptr;
227		297
228	#else	298	#else
229		299
		300	ev_tstamp ev_rt_now;
230	# define VAR(name,decl) static decl;	301	#define VAR(name,decl) static decl;
231	# include "ev_vars.h"	302	#include "ev_vars.h"
232	# undef VAR	303	#undef VAR
		304
		305	static int ev_default_loop_ptr;
233		306
234	#endif	307	#endif
235		308
236	/*****************************************************************************/	309	/*****************************************************************************/
237		310
238	inline ev_tstamp	311	ev_tstamp
239	ev_time (void)	312	ev_time (void)
240	{	313	{
241	#if EV_USE_REALTIME	314	#if EV_USE_REALTIME
242	struct timespec ts;	315	struct timespec ts;
243	clock_gettime (CLOCK_REALTIME, &ts);	316	clock_gettime (CLOCK_REALTIME, &ts);
…		…
262	#endif	335	#endif
263		336
264	return ev_time ();	337	return ev_time ();
265	}	338	}
266		339
		340	#if EV_MULTIPLICITY
267	ev_tstamp	341	ev_tstamp
268	ev_now (EV_P)	342	ev_now (EV_P)
269	{	343	{
270	return rt_now;	344	return ev_rt_now;
271	}	345	}
		346	#endif
272		347
273	#define array_roundsize(type,n) ((n) | 4 & ~3)	348	#define array_roundsize(type,n) (((n) | 4) & ~3)
274		349
275	#define array_needsize(type,base,cur,cnt,init) \	350	#define array_needsize(type,base,cur,cnt,init) \
276	if (expect_false ((cnt) > cur)) \	351	if (expect_false ((cnt) > cur)) \
277	{ \	352	{ \
278	int newcnt = cur; \	353	int newcnt = cur; \
…		…
293	stem ## max = array_roundsize (stem ## cnt >> 1); \	368	stem ## max = array_roundsize (stem ## cnt >> 1); \
294	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	369	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
295	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	370	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
296	}	371	}
297		372
298	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
299	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
300	#define array_free_microshit(stem) \
301	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
302
303	#define array_free(stem, idx) \	373	#define array_free(stem, idx) \
304	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	374	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
305		375
306	/*****************************************************************************/	376	/*****************************************************************************/
307		377
…		…
321	void	391	void
322	ev_feed_event (EV_P_ void *w, int revents)	392	ev_feed_event (EV_P_ void *w, int revents)
323	{	393	{
324	W w_ = (W)w;	394	W w_ = (W)w;
325		395
326	if (w_->pending)	396	if (expect_false (w_->pending))
327	{	397	{
328	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;	398	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
329	return;	399	return;
330	}	400	}
331		401
332	w_->pending = ++pendingcnt [ABSPRI (w_)];	402	w_->pending = ++pendingcnt [ABSPRI (w_)];
333	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));	403	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
334	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;	404	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
335	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;	405	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
336	}	406	}
337		407
338	static void	408	static void
…		…
346		416
347	inline void	417	inline void
348	fd_event (EV_P_ int fd, int revents)	418	fd_event (EV_P_ int fd, int revents)
349	{	419	{
350	ANFD *anfd = anfds + fd;	420	ANFD *anfd = anfds + fd;
351	struct ev_io *w;	421	ev_io *w;
352		422
353	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	423	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
354	{	424	{
355	int ev = w->events & revents;	425	int ev = w->events & revents;
356		426
357	if (ev)	427	if (ev)
358	ev_feed_event (EV_A_ (W)w, ev);	428	ev_feed_event (EV_A_ (W)w, ev);
…		…
365	fd_event (EV_A_ fd, revents);	435	fd_event (EV_A_ fd, revents);
366	}	436	}
367		437
368	/*****************************************************************************/	438	/*****************************************************************************/
369		439
370	static void	440	inline void
371	fd_reify (EV_P)	441	fd_reify (EV_P)
372	{	442	{
373	int i;	443	int i;
374		444
375	for (i = 0; i < fdchangecnt; ++i)	445	for (i = 0; i < fdchangecnt; ++i)
376	{	446	{
377	int fd = fdchanges [i];	447	int fd = fdchanges [i];
378	ANFD *anfd = anfds + fd;	448	ANFD *anfd = anfds + fd;
379	struct ev_io *w;	449	ev_io *w;
380		450
381	int events = 0;	451	int events = 0;
382		452
383	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	453	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
384	events |= w->events;	454	events |= w->events;
385		455
		456	#if EV_SELECT_IS_WINSOCKET
		457	if (events)
		458	{
		459	unsigned long argp;
		460	anfd->handle = _get_osfhandle (fd);
		461	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		462	}
		463	#endif
		464
386	anfd->reify = 0;	465	anfd->reify = 0;
387		466
388	method_modify (EV_A_ fd, anfd->events, events);	467	backend_modify (EV_A_ fd, anfd->events, events);
389	anfd->events = events;	468	anfd->events = events;
390	}	469	}
391		470
392	fdchangecnt = 0;	471	fdchangecnt = 0;
393	}	472	}
394		473
395	static void	474	static void
396	fd_change (EV_P_ int fd)	475	fd_change (EV_P_ int fd)
397	{	476	{
398	if (anfds [fd].reify)	477	if (expect_false (anfds [fd].reify))
399	return;	478	return;
400		479
401	anfds [fd].reify = 1;	480	anfds [fd].reify = 1;
402		481
403	++fdchangecnt;	482	++fdchangecnt;
404	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	483	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
405	fdchanges [fdchangecnt - 1] = fd;	484	fdchanges [fdchangecnt - 1] = fd;
406	}	485	}
407		486
408	static void	487	static void
409	fd_kill (EV_P_ int fd)	488	fd_kill (EV_P_ int fd)
410	{	489	{
411	struct ev_io *w;	490	ev_io *w;
412		491
413	while ((w = (struct ev_io *)anfds [fd].head))	492	while ((w = (ev_io *)anfds [fd].head))
414	{	493	{
415	ev_io_stop (EV_A_ w);	494	ev_io_stop (EV_A_ w);
416	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	495	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
417	}	496	}
418	}	497	}
419		498
420	static int	499	inline int
421	fd_valid (int fd)	500	fd_valid (int fd)
422	{	501	{
423	#ifdef WIN32	502	#ifdef _WIN32
424	return !!win32_get_osfhandle (fd);	503	return _get_osfhandle (fd) != -1;
425	#else	504	#else
426	return fcntl (fd, F_GETFD) != -1;	505	return fcntl (fd, F_GETFD) != -1;
427	#endif	506	#endif
428	}	507	}
429		508
…		…
451	fd_kill (EV_A_ fd);	530	fd_kill (EV_A_ fd);
452	return;	531	return;
453	}	532	}
454	}	533	}
455		534
456	/* usually called after fork if method needs to re-arm all fds from scratch */	535	/* usually called after fork if backend needs to re-arm all fds from scratch */
457	static void	536	static void
458	fd_rearm_all (EV_P)	537	fd_rearm_all (EV_P)
459	{	538	{
460	int fd;	539	int fd;
461		540
…		…
509		588
510	heap [k] = w;	589	heap [k] = w;
511	((W)heap [k])->active = k + 1;	590	((W)heap [k])->active = k + 1;
512	}	591	}
513		592
		593	inline void
		594	adjustheap (WT *heap, int N, int k)
		595	{
		596	upheap (heap, k);
		597	downheap (heap, N, k);
		598	}
		599
514	/*****************************************************************************/	600	/*****************************************************************************/
515		601
516	typedef struct	602	typedef struct
517	{	603	{
518	WL head;	604	WL head;
…		…
522	static ANSIG *signals;	608	static ANSIG *signals;
523	static int signalmax;	609	static int signalmax;
524		610
525	static int sigpipe [2];	611	static int sigpipe [2];
526	static sig_atomic_t volatile gotsig;	612	static sig_atomic_t volatile gotsig;
527	static struct ev_io sigev;	613	static ev_io sigev;
528		614
529	static void	615	static void
530	signals_init (ANSIG *base, int count)	616	signals_init (ANSIG *base, int count)
531	{	617	{
532	while (count--)	618	while (count--)
…		…
539	}	625	}
540		626
541	static void	627	static void
542	sighandler (int signum)	628	sighandler (int signum)
543	{	629	{
544	#if WIN32	630	#if _WIN32
545	signal (signum, sighandler);	631	signal (signum, sighandler);
546	#endif	632	#endif
547		633
548	signals [signum - 1].gotsig = 1;	634	signals [signum - 1].gotsig = 1;
549		635
550	if (!gotsig)	636	if (!gotsig)
551	{	637	{
552	int old_errno = errno;	638	int old_errno = errno;
553	gotsig = 1;	639	gotsig = 1;
554	#ifdef WIN32
555	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
556	#else
557	write (sigpipe [1], &signum, 1);	640	write (sigpipe [1], &signum, 1);
558	#endif
559	errno = old_errno;	641	errno = old_errno;
560	}	642	}
561	}	643	}
562		644
563	void	645	void
564	ev_feed_signal_event (EV_P_ int signum)	646	ev_feed_signal_event (EV_P_ int signum)
565	{	647	{
		648	WL w;
		649
566	#if EV_MULTIPLICITY	650	#if EV_MULTIPLICITY
567	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	651	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
568	#endif	652	#endif
569		653
570	--signum;	654	--signum;
571		655
572	if (signum < 0 || signum >= signalmax)	656	if (signum < 0 || signum >= signalmax)
…		…
577	for (w = signals [signum].head; w; w = w->next)	661	for (w = signals [signum].head; w; w = w->next)
578	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	662	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
579	}	663	}
580		664
581	static void	665	static void
582	sigcb (EV_P_ struct ev_io *iow, int revents)	666	sigcb (EV_P_ ev_io *iow, int revents)
583	{	667	{
584	WL w;
585	int signum;	668	int signum;
586		669
587	#ifdef WIN32
588	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
589	#else
590	read (sigpipe [0], &revents, 1);	670	read (sigpipe [0], &revents, 1);
591	#endif
592	gotsig = 0;	671	gotsig = 0;
593		672
594	for (signum = signalmax; signum--; )	673	for (signum = signalmax; signum--; )
595	if (signals [signum].gotsig)	674	if (signals [signum].gotsig)
596	sigevent (EV_A_ signum + 1);	675	ev_feed_signal_event (EV_A_ signum + 1);
		676	}
		677
		678	static void
		679	fd_intern (int fd)
		680	{
		681	#ifdef _WIN32
		682	int arg = 1;
		683	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		684	#else
		685	fcntl (fd, F_SETFD, FD_CLOEXEC);
		686	fcntl (fd, F_SETFL, O_NONBLOCK);
		687	#endif
597	}	688	}
598		689
599	static void	690	static void
600	siginit (EV_P)	691	siginit (EV_P)
601	{	692	{
602	#ifndef WIN32	693	fd_intern (sigpipe [0]);
603	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	694	fd_intern (sigpipe [1]);
604	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
605
606	/* rather than sort out wether we really need nb, set it */
607	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
608	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
609	#endif
610		695
611	ev_io_set (&sigev, sigpipe [0], EV_READ);	696	ev_io_set (&sigev, sigpipe [0], EV_READ);
612	ev_io_start (EV_A_ &sigev);	697	ev_io_start (EV_A_ &sigev);
613	ev_unref (EV_A); /* child watcher should not keep loop alive */	698	ev_unref (EV_A); /* child watcher should not keep loop alive */
614	}	699	}
615		700
616	/*****************************************************************************/	701	/*****************************************************************************/
617		702
618	static struct ev_child *childs [PID_HASHSIZE];	703	static ev_child *childs [PID_HASHSIZE];
619		704
620	#ifndef WIN32	705	#ifndef _WIN32
621		706
622	static struct ev_signal childev;	707	static ev_signal childev;
623		708
624	#ifndef WCONTINUED	709	#ifndef WCONTINUED
625	# define WCONTINUED 0	710	# define WCONTINUED 0
626	#endif	711	#endif
627		712
628	static void	713	static void
629	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	714	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
630	{	715	{
631	struct ev_child *w;	716	ev_child *w;
632		717
633	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	718	for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
634	if (w->pid == pid || !w->pid)	719	if (w->pid == pid || !w->pid)
635	{	720	{
636	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	721	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
637	w->rpid = pid;	722	w->rpid = pid;
638	w->rstatus = status;	723	w->rstatus = status;
639	ev_feed_event (EV_A_ (W)w, EV_CHILD);	724	ev_feed_event (EV_A_ (W)w, EV_CHILD);
640	}	725	}
641	}	726	}
642		727
643	static void	728	static void
644	childcb (EV_P_ struct ev_signal *sw, int revents)	729	childcb (EV_P_ ev_signal *sw, int revents)
645	{	730	{
646	int pid, status;	731	int pid, status;
647		732
648	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	733	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
649	{	734	{
650	/* make sure we are called again until all childs have been reaped */	735	/* make sure we are called again until all childs have been reaped */
		736	/* we need to do it this way so that the callback gets called before we continue */
651	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	737	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
652		738
653	child_reap (EV_A_ sw, pid, pid, status);	739	child_reap (EV_A_ sw, pid, pid, status);
654	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	740	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
655	}	741	}
656	}	742	}
657		743
658	#endif	744	#endif
659		745
660	/*****************************************************************************/	746	/*****************************************************************************/
661		747
		748	#if EV_USE_PORT
		749	# include "ev_port.c"
		750	#endif
662	#if EV_USE_KQUEUE	751	#if EV_USE_KQUEUE
663	# include "ev_kqueue.c"	752	# include "ev_kqueue.c"
664	#endif	753	#endif
665	#if EV_USE_EPOLL	754	#if EV_USE_EPOLL
666	# include "ev_epoll.c"	755	# include "ev_epoll.c"
…		…
686		775
687	/* return true if we are running with elevated privileges and should ignore env variables */	776	/* return true if we are running with elevated privileges and should ignore env variables */
688	static int	777	static int
689	enable_secure (void)	778	enable_secure (void)
690	{	779	{
691	#ifdef WIN32	780	#ifdef _WIN32
692	return 0;	781	return 0;
693	#else	782	#else
694	return getuid () != geteuid ()	783	return getuid () != geteuid ()
695	|| getgid () != getegid ();	784	|| getgid () != getegid ();
696	#endif	785	#endif
697	}	786	}
698		787
699	int	788	unsigned int
700	ev_method (EV_P)	789	ev_supported_backends (void)
701	{	790	{
702	return method;	791	unsigned int flags = 0;
703	}
704		792
705	static void	793	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
706	loop_init (EV_P_ int methods)	794	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		795	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		796	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		797	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		798
		799	return flags;
		800	}
		801
		802	unsigned int
		803	ev_recommended_backends (void)
707	{	804	{
708	if (!method)	805	unsigned int flags = ev_supported_backends ();
		806
		807	#ifndef __NetBSD__
		808	/* kqueue is borked on everything but netbsd apparently */
		809	/* it usually doesn't work correctly on anything but sockets and pipes */
		810	flags &= ~EVBACKEND_KQUEUE;
		811	#endif
		812	#ifdef __APPLE__
		813	// flags &= ~EVBACKEND_KQUEUE; for documentation
		814	flags &= ~EVBACKEND_POLL;
		815	#endif
		816
		817	return flags;
		818	}
		819
		820	unsigned int
		821	ev_embeddable_backends (void)
		822	{
		823	return EVBACKEND_EPOLL
		824	| EVBACKEND_KQUEUE
		825	| EVBACKEND_PORT;
		826	}
		827
		828	unsigned int
		829	ev_backend (EV_P)
		830	{
		831	return backend;
		832	}
		833
		834	static void
		835	loop_init (EV_P_ unsigned int flags)
		836	{
		837	if (!backend)
709	{	838	{
710	#if EV_USE_MONOTONIC	839	#if EV_USE_MONOTONIC
711	{	840	{
712	struct timespec ts;	841	struct timespec ts;
713	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	842	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
714	have_monotonic = 1;	843	have_monotonic = 1;
715	}	844	}
716	#endif	845	#endif
717		846
718	rt_now = ev_time ();	847	ev_rt_now = ev_time ();
719	mn_now = get_clock ();	848	mn_now = get_clock ();
720	now_floor = mn_now;	849	now_floor = mn_now;
721	rtmn_diff = rt_now - mn_now;	850	rtmn_diff = ev_rt_now - mn_now;
722		851
723	if (methods == EVMETHOD_AUTO)	852	if (!(flags & EVFLAG_NOENV)
724	if (!enable_secure () && getenv ("LIBEV_METHODS"))	853	&& !enable_secure ()
		854	&& getenv ("LIBEV_FLAGS"))
725	methods = atoi (getenv ("LIBEV_METHODS"));	855	flags = atoi (getenv ("LIBEV_FLAGS"));
726	else
727	methods = EVMETHOD_ANY;
728		856
729	method = 0;	857	if (!(flags & 0x0000ffffUL))
730	#if EV_USE_WIN32	858	flags |= ev_recommended_backends ();
731	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	859
		860	backend = 0;
		861	#if EV_USE_PORT
		862	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
732	#endif	863	#endif
733	#if EV_USE_KQUEUE	864	#if EV_USE_KQUEUE
734	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	865	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
735	#endif	866	#endif
736	#if EV_USE_EPOLL	867	#if EV_USE_EPOLL
737	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	868	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
738	#endif	869	#endif
739	#if EV_USE_POLL	870	#if EV_USE_POLL
740	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	871	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
741	#endif	872	#endif
742	#if EV_USE_SELECT	873	#if EV_USE_SELECT
743	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	874	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
744	#endif	875	#endif
745		876
746	ev_watcher_init (&sigev, sigcb);	877	ev_init (&sigev, sigcb);
747	ev_set_priority (&sigev, EV_MAXPRI);	878	ev_set_priority (&sigev, EV_MAXPRI);
748	}	879	}
749	}	880	}
750		881
751	void	882	static void
752	loop_destroy (EV_P)	883	loop_destroy (EV_P)
753	{	884	{
754	int i;	885	int i;
755		886
756	#if EV_USE_WIN32	887	#if EV_USE_PORT
757	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	888	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
758	#endif	889	#endif
759	#if EV_USE_KQUEUE	890	#if EV_USE_KQUEUE
760	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	891	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
761	#endif	892	#endif
762	#if EV_USE_EPOLL	893	#if EV_USE_EPOLL
763	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	894	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
764	#endif	895	#endif
765	#if EV_USE_POLL	896	#if EV_USE_POLL
766	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	897	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
767	#endif	898	#endif
768	#if EV_USE_SELECT	899	#if EV_USE_SELECT
769	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	900	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
770	#endif	901	#endif
771		902
772	for (i = NUMPRI; i--; )	903	for (i = NUMPRI; i--; )
773	array_free (pending, [i]);	904	array_free (pending, [i]);
774		905
775	/* have to use the microsoft-never-gets-it-right macro */	906	/* have to use the microsoft-never-gets-it-right macro */
776	array_free_microshit (fdchange);	907	array_free (fdchange, EMPTY0);
777	array_free_microshit (timer);	908	array_free (timer, EMPTY0);
778	array_free_microshit (periodic);	909	#if EV_PERIODICS
779	array_free_microshit (idle);	910	array_free (periodic, EMPTY0);
780	array_free_microshit (prepare);	911	#endif
781	array_free_microshit (check);	912	array_free (idle, EMPTY0);
		913	array_free (prepare, EMPTY0);
		914	array_free (check, EMPTY0);
782		915
783	method = 0;	916	backend = 0;
784	}	917	}
785		918
786	static void	919	static void
787	loop_fork (EV_P)	920	loop_fork (EV_P)
788	{	921	{
		922	#if EV_USE_PORT
		923	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		924	#endif
		925	#if EV_USE_KQUEUE
		926	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		927	#endif
789	#if EV_USE_EPOLL	928	#if EV_USE_EPOLL
790	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	929	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
791	#endif
792	#if EV_USE_KQUEUE
793	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
794	#endif	930	#endif
795		931
796	if (ev_is_active (&sigev))	932	if (ev_is_active (&sigev))
797	{	933	{
798	/* default loop */	934	/* default loop */
…		…
811	postfork = 0;	947	postfork = 0;
812	}	948	}
813		949
814	#if EV_MULTIPLICITY	950	#if EV_MULTIPLICITY
815	struct ev_loop *	951	struct ev_loop *
816	ev_loop_new (int methods)	952	ev_loop_new (unsigned int flags)
817	{	953	{
818	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	954	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
819		955
820	memset (loop, 0, sizeof (struct ev_loop));	956	memset (loop, 0, sizeof (struct ev_loop));
821		957
822	loop_init (EV_A_ methods);	958	loop_init (EV_A_ flags);
823		959
824	if (ev_method (EV_A))	960	if (ev_backend (EV_A))
825	return loop;	961	return loop;
826		962
827	return 0;	963	return 0;
828	}	964	}
829		965
…		…
841	}	977	}
842		978
843	#endif	979	#endif
844		980
845	#if EV_MULTIPLICITY	981	#if EV_MULTIPLICITY
846	struct ev_loop default_loop_struct;
847	static struct ev_loop *default_loop;
848
849	struct ev_loop *	982	struct ev_loop *
		983	ev_default_loop_init (unsigned int flags)
850	#else	984	#else
851	static int default_loop;
852
853	int	985	int
		986	ev_default_loop (unsigned int flags)
854	#endif	987	#endif
855	ev_default_loop (int methods)
856	{	988	{
857	if (sigpipe [0] == sigpipe [1])	989	if (sigpipe [0] == sigpipe [1])
858	if (pipe (sigpipe))	990	if (pipe (sigpipe))
859	return 0;	991	return 0;
860		992
861	if (!default_loop)	993	if (!ev_default_loop_ptr)
862	{	994	{
863	#if EV_MULTIPLICITY	995	#if EV_MULTIPLICITY
864	struct ev_loop *loop = default_loop = &default_loop_struct;	996	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
865	#else	997	#else
866	default_loop = 1;	998	ev_default_loop_ptr = 1;
867	#endif	999	#endif
868		1000
869	loop_init (EV_A_ methods);	1001	loop_init (EV_A_ flags);
870		1002
871	if (ev_method (EV_A))	1003	if (ev_backend (EV_A))
872	{	1004	{
873	siginit (EV_A);	1005	siginit (EV_A);
874		1006
875	#ifndef WIN32	1007	#ifndef _WIN32
876	ev_signal_init (&childev, childcb, SIGCHLD);	1008	ev_signal_init (&childev, childcb, SIGCHLD);
877	ev_set_priority (&childev, EV_MAXPRI);	1009	ev_set_priority (&childev, EV_MAXPRI);
878	ev_signal_start (EV_A_ &childev);	1010	ev_signal_start (EV_A_ &childev);
879	ev_unref (EV_A); /* child watcher should not keep loop alive */	1011	ev_unref (EV_A); /* child watcher should not keep loop alive */
880	#endif	1012	#endif
881	}	1013	}
882	else	1014	else
883	default_loop = 0;	1015	ev_default_loop_ptr = 0;
884	}	1016	}
885		1017
886	return default_loop;	1018	return ev_default_loop_ptr;
887	}	1019	}
888		1020
889	void	1021	void
890	ev_default_destroy (void)	1022	ev_default_destroy (void)
891	{	1023	{
892	#if EV_MULTIPLICITY	1024	#if EV_MULTIPLICITY
893	struct ev_loop *loop = default_loop;	1025	struct ev_loop *loop = ev_default_loop_ptr;
894	#endif	1026	#endif
895		1027
896	#ifndef WIN32	1028	#ifndef _WIN32
897	ev_ref (EV_A); /* child watcher */	1029	ev_ref (EV_A); /* child watcher */
898	ev_signal_stop (EV_A_ &childev);	1030	ev_signal_stop (EV_A_ &childev);
899	#endif	1031	#endif
900		1032
901	ev_ref (EV_A); /* signal watcher */	1033	ev_ref (EV_A); /* signal watcher */
…		…
909		1041
910	void	1042	void
911	ev_default_fork (void)	1043	ev_default_fork (void)
912	{	1044	{
913	#if EV_MULTIPLICITY	1045	#if EV_MULTIPLICITY
914	struct ev_loop *loop = default_loop;	1046	struct ev_loop *loop = ev_default_loop_ptr;
915	#endif	1047	#endif
916		1048
917	if (method)	1049	if (backend)
918	postfork = 1;	1050	postfork = 1;
919	}	1051	}
920		1052
921	/*****************************************************************************/	1053	/*****************************************************************************/
922		1054
…		…
930	return 1;	1062	return 1;
931		1063
932	return 0;	1064	return 0;
933	}	1065	}
934		1066
935	static void	1067	inline void
936	call_pending (EV_P)	1068	call_pending (EV_P)
937	{	1069	{
938	int pri;	1070	int pri;
939		1071
940	for (pri = NUMPRI; pri--; )	1072	for (pri = NUMPRI; pri--; )
941	while (pendingcnt [pri])	1073	while (pendingcnt [pri])
942	{	1074	{
943	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1075	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
944		1076
945	if (p->w)	1077	if (expect_true (p->w))
946	{	1078	{
947	p->w->pending = 0;	1079	p->w->pending = 0;
948	p->w->cb (EV_A_ p->w, p->events);	1080	EV_CB_INVOKE (p->w, p->events);
949	}	1081	}
950	}	1082	}
951	}	1083	}
952		1084
953	static void	1085	inline void
954	timers_reify (EV_P)	1086	timers_reify (EV_P)
955	{	1087	{
956	while (timercnt && ((WT)timers [0])->at <= mn_now)	1088	while (timercnt && ((WT)timers [0])->at <= mn_now)
957	{	1089	{
958	struct ev_timer *w = timers [0];	1090	ev_timer *w = timers [0];
959		1091
960	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1092	assert (("inactive timer on timer heap detected", ev_is_active (w)));
961		1093
962	/* first reschedule or stop timer */	1094	/* first reschedule or stop timer */
963	if (w->repeat)	1095	if (w->repeat)
964	{	1096	{
965	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1097	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1098
966	((WT)w)->at = mn_now + w->repeat;	1099	((WT)w)->at += w->repeat;
		1100	if (((WT)w)->at < mn_now)
		1101	((WT)w)->at = mn_now;
		1102
967	downheap ((WT *)timers, timercnt, 0);	1103	downheap ((WT *)timers, timercnt, 0);
968	}	1104	}
969	else	1105	else
970	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1106	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
971		1107
972	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1108	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
973	}	1109	}
974	}	1110	}
975		1111
976	static void	1112	#if EV_PERIODICS
		1113	inline void
977	periodics_reify (EV_P)	1114	periodics_reify (EV_P)
978	{	1115	{
979	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1116	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
980	{	1117	{
981	struct ev_periodic *w = periodics [0];	1118	ev_periodic *w = periodics [0];
982		1119
983	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1120	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
984		1121
985	/* first reschedule or stop timer */	1122	/* first reschedule or stop timer */
986	if (w->reschedule_cb)	1123	if (w->reschedule_cb)
987	{	1124	{
988	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);	1125	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
989
990	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));	1126	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
991	downheap ((WT *)periodics, periodiccnt, 0);	1127	downheap ((WT *)periodics, periodiccnt, 0);
992	}	1128	}
993	else if (w->interval)	1129	else if (w->interval)
994	{	1130	{
995	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1131	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
996	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1132	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
997	downheap ((WT *)periodics, periodiccnt, 0);	1133	downheap ((WT *)periodics, periodiccnt, 0);
998	}	1134	}
999	else	1135	else
1000	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1136	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1001		1137
…		…
1009	int i;	1145	int i;
1010		1146
1011	/* adjust periodics after time jump */	1147	/* adjust periodics after time jump */
1012	for (i = 0; i < periodiccnt; ++i)	1148	for (i = 0; i < periodiccnt; ++i)
1013	{	1149	{
1014	struct ev_periodic *w = periodics [i];	1150	ev_periodic *w = periodics [i];
1015		1151
1016	if (w->reschedule_cb)	1152	if (w->reschedule_cb)
1017	((WT)w)->at = w->reschedule_cb (w, rt_now);	1153	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1018	else if (w->interval)	1154	else if (w->interval)
1019	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1155	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1020	}	1156	}
1021		1157
1022	/* now rebuild the heap */	1158	/* now rebuild the heap */
1023	for (i = periodiccnt >> 1; i--; )	1159	for (i = periodiccnt >> 1; i--; )
1024	downheap ((WT *)periodics, periodiccnt, i);	1160	downheap ((WT *)periodics, periodiccnt, i);
1025	}	1161	}
		1162	#endif
1026		1163
1027	inline int	1164	inline int
1028	time_update_monotonic (EV_P)	1165	time_update_monotonic (EV_P)
1029	{	1166	{
1030	mn_now = get_clock ();	1167	mn_now = get_clock ();
1031		1168
1032	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1169	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1033	{	1170	{
1034	rt_now = rtmn_diff + mn_now;	1171	ev_rt_now = rtmn_diff + mn_now;
1035	return 0;	1172	return 0;
1036	}	1173	}
1037	else	1174	else
1038	{	1175	{
1039	now_floor = mn_now;	1176	now_floor = mn_now;
1040	rt_now = ev_time ();	1177	ev_rt_now = ev_time ();
1041	return 1;	1178	return 1;
1042	}	1179	}
1043	}	1180	}
1044		1181
1045	static void	1182	inline void
1046	time_update (EV_P)	1183	time_update (EV_P)
1047	{	1184	{
1048	int i;	1185	int i;
1049		1186
1050	#if EV_USE_MONOTONIC	1187	#if EV_USE_MONOTONIC
…		…
1054	{	1191	{
1055	ev_tstamp odiff = rtmn_diff;	1192	ev_tstamp odiff = rtmn_diff;
1056		1193
1057	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1194	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1058	{	1195	{
1059	rtmn_diff = rt_now - mn_now;	1196	rtmn_diff = ev_rt_now - mn_now;
1060		1197
1061	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1198	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1062	return; /* all is well */	1199	return; /* all is well */
1063		1200
1064	rt_now = ev_time ();	1201	ev_rt_now = ev_time ();
1065	mn_now = get_clock ();	1202	mn_now = get_clock ();
1066	now_floor = mn_now;	1203	now_floor = mn_now;
1067	}	1204	}
1068		1205
		1206	# if EV_PERIODICS
1069	periodics_reschedule (EV_A);	1207	periodics_reschedule (EV_A);
		1208	# endif
1070	/* no timer adjustment, as the monotonic clock doesn't jump */	1209	/* no timer adjustment, as the monotonic clock doesn't jump */
1071	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1210	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1072	}	1211	}
1073	}	1212	}
1074	else	1213	else
1075	#endif	1214	#endif
1076	{	1215	{
1077	rt_now = ev_time ();	1216	ev_rt_now = ev_time ();
1078		1217
1079	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1218	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1080	{	1219	{
		1220	#if EV_PERIODICS
1081	periodics_reschedule (EV_A);	1221	periodics_reschedule (EV_A);
		1222	#endif
1082		1223
1083	/* adjust timers. this is easy, as the offset is the same for all */	1224	/* adjust timers. this is easy, as the offset is the same for all */
1084	for (i = 0; i < timercnt; ++i)	1225	for (i = 0; i < timercnt; ++i)
1085	((WT)timers [i])->at += rt_now - mn_now;	1226	((WT)timers [i])->at += ev_rt_now - mn_now;
1086	}	1227	}
1087		1228
1088	mn_now = rt_now;	1229	mn_now = ev_rt_now;
1089	}	1230	}
1090	}	1231	}
1091		1232
1092	void	1233	void
1093	ev_ref (EV_P)	1234	ev_ref (EV_P)
…		…
1104	static int loop_done;	1245	static int loop_done;
1105		1246
1106	void	1247	void
1107	ev_loop (EV_P_ int flags)	1248	ev_loop (EV_P_ int flags)
1108	{	1249	{
1109	double block;
1110	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1250	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1251	? EVUNLOOP_ONE
		1252	: EVUNLOOP_CANCEL;
1111		1253
1112	do	1254	while (activecnt)
1113	{	1255	{
1114	/* queue check watchers (and execute them) */	1256	/* queue check watchers (and execute them) */
1115	if (expect_false (preparecnt))	1257	if (expect_false (preparecnt))
1116	{	1258	{
1117	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1259	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1124		1266
1125	/* update fd-related kernel structures */	1267	/* update fd-related kernel structures */
1126	fd_reify (EV_A);	1268	fd_reify (EV_A);
1127		1269
1128	/* calculate blocking time */	1270	/* calculate blocking time */
		1271	{
		1272	double block;
1129		1273
1130	/* we only need this for !monotonic clock or timers, but as we basically	1274	if (flags & EVLOOP_NONBLOCK || idlecnt)
1131	always have timers, we just calculate it always */	1275	block = 0.; /* do not block at all */
		1276	else
		1277	{
		1278	/* update time to cancel out callback processing overhead */
1132	#if EV_USE_MONOTONIC	1279	#if EV_USE_MONOTONIC
1133	if (expect_true (have_monotonic))	1280	if (expect_true (have_monotonic))
1134	time_update_monotonic (EV_A);	1281	time_update_monotonic (EV_A);
1135	else	1282	else
1136	#endif	1283	#endif
1137	{	1284	{
1138	rt_now = ev_time ();	1285	ev_rt_now = ev_time ();
1139	mn_now = rt_now;	1286	mn_now = ev_rt_now;
1140	}	1287	}
1141		1288
1142	if (flags & EVLOOP_NONBLOCK || idlecnt)
1143	block = 0.;
1144	else
1145	{
1146	block = MAX_BLOCKTIME;	1289	block = MAX_BLOCKTIME;
1147		1290
1148	if (timercnt)	1291	if (timercnt)
1149	{	1292	{
1150	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1293	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1151	if (block > to) block = to;	1294	if (block > to) block = to;
1152	}	1295	}
1153		1296
		1297	#if EV_PERIODICS
1154	if (periodiccnt)	1298	if (periodiccnt)
1155	{	1299	{
1156	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1300	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1157	if (block > to) block = to;	1301	if (block > to) block = to;
1158	}	1302	}
		1303	#endif
1159		1304
1160	if (block < 0.) block = 0.;	1305	if (expect_false (block < 0.)) block = 0.;
1161	}	1306	}
1162		1307
1163	method_poll (EV_A_ block);	1308	backend_poll (EV_A_ block);
		1309	}
1164		1310
1165	/* update rt_now, do magic */	1311	/* update ev_rt_now, do magic */
1166	time_update (EV_A);	1312	time_update (EV_A);
1167		1313
1168	/* queue pending timers and reschedule them */	1314	/* queue pending timers and reschedule them */
1169	timers_reify (EV_A); /* relative timers called last */	1315	timers_reify (EV_A); /* relative timers called last */
		1316	#if EV_PERIODICS
1170	periodics_reify (EV_A); /* absolute timers called first */	1317	periodics_reify (EV_A); /* absolute timers called first */
		1318	#endif
1171		1319
1172	/* queue idle watchers unless io or timers are pending */	1320	/* queue idle watchers unless io or timers are pending */
1173	if (idlecnt && !any_pending (EV_A))	1321	if (idlecnt && !any_pending (EV_A))
1174	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1322	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1175		1323
1176	/* queue check watchers, to be executed first */	1324	/* queue check watchers, to be executed first */
1177	if (checkcnt)	1325	if (expect_false (checkcnt))
1178	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1326	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1179		1327
1180	call_pending (EV_A);	1328	call_pending (EV_A);
1181	}
1182	while (activecnt && !loop_done);
1183		1329
1184	if (loop_done != 2)	1330	if (expect_false (loop_done))
1185	loop_done = 0;	1331	break;
		1332	}
		1333
		1334	if (loop_done == EVUNLOOP_ONE)
		1335	loop_done = EVUNLOOP_CANCEL;
1186	}	1336	}
1187		1337
1188	void	1338	void
1189	ev_unloop (EV_P_ int how)	1339	ev_unloop (EV_P_ int how)
1190	{	1340	{
…		…
1243	}	1393	}
1244		1394
1245	/*****************************************************************************/	1395	/*****************************************************************************/
1246		1396
1247	void	1397	void
1248	ev_io_start (EV_P_ struct ev_io *w)	1398	ev_io_start (EV_P_ ev_io *w)
1249	{	1399	{
1250	int fd = w->fd;	1400	int fd = w->fd;
1251		1401
1252	if (ev_is_active (w))	1402	if (expect_false (ev_is_active (w)))
1253	return;	1403	return;
1254		1404
1255	assert (("ev_io_start called with negative fd", fd >= 0));	1405	assert (("ev_io_start called with negative fd", fd >= 0));
1256		1406
1257	ev_start (EV_A_ (W)w, 1);	1407	ev_start (EV_A_ (W)w, 1);
…		…
1260		1410
1261	fd_change (EV_A_ fd);	1411	fd_change (EV_A_ fd);
1262	}	1412	}
1263		1413
1264	void	1414	void
1265	ev_io_stop (EV_P_ struct ev_io *w)	1415	ev_io_stop (EV_P_ ev_io *w)
1266	{	1416	{
1267	ev_clear_pending (EV_A_ (W)w);	1417	ev_clear_pending (EV_A_ (W)w);
1268	if (!ev_is_active (w))	1418	if (expect_false (!ev_is_active (w)))
1269	return;	1419	return;
		1420
		1421	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1270		1422
1271	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1423	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1272	ev_stop (EV_A_ (W)w);	1424	ev_stop (EV_A_ (W)w);
1273		1425
1274	fd_change (EV_A_ w->fd);	1426	fd_change (EV_A_ w->fd);
1275	}	1427	}
1276		1428
1277	void	1429	void
1278	ev_timer_start (EV_P_ struct ev_timer *w)	1430	ev_timer_start (EV_P_ ev_timer *w)
1279	{	1431	{
1280	if (ev_is_active (w))	1432	if (expect_false (ev_is_active (w)))
1281	return;	1433	return;
1282		1434
1283	((WT)w)->at += mn_now;	1435	((WT)w)->at += mn_now;
1284		1436
1285	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1437	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1286		1438
1287	ev_start (EV_A_ (W)w, ++timercnt);	1439	ev_start (EV_A_ (W)w, ++timercnt);
1288	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1440	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1289	timers [timercnt - 1] = w;	1441	timers [timercnt - 1] = w;
1290	upheap ((WT *)timers, timercnt - 1);	1442	upheap ((WT *)timers, timercnt - 1);
1291		1443
1292	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1444	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1293	}	1445	}
1294		1446
1295	void	1447	void
1296	ev_timer_stop (EV_P_ struct ev_timer *w)	1448	ev_timer_stop (EV_P_ ev_timer *w)
1297	{	1449	{
1298	ev_clear_pending (EV_A_ (W)w);	1450	ev_clear_pending (EV_A_ (W)w);
1299	if (!ev_is_active (w))	1451	if (expect_false (!ev_is_active (w)))
1300	return;	1452	return;
1301		1453
1302	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1454	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1303		1455
1304	if (((W)w)->active < timercnt--)	1456	if (expect_true (((W)w)->active < timercnt--))
1305	{	1457	{
1306	timers [((W)w)->active - 1] = timers [timercnt];	1458	timers [((W)w)->active - 1] = timers [timercnt];
1307	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1459	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1308	}	1460	}
1309		1461
1310	((WT)w)->at = w->repeat;	1462	((WT)w)->at -= mn_now;
1311		1463
1312	ev_stop (EV_A_ (W)w);	1464	ev_stop (EV_A_ (W)w);
1313	}	1465	}
1314		1466
1315	void	1467	void
1316	ev_timer_again (EV_P_ struct ev_timer *w)	1468	ev_timer_again (EV_P_ ev_timer *w)
1317	{	1469	{
1318	if (ev_is_active (w))	1470	if (ev_is_active (w))
1319	{	1471	{
1320	if (w->repeat)	1472	if (w->repeat)
1321	{	1473	{
1322	((WT)w)->at = mn_now + w->repeat;	1474	((WT)w)->at = mn_now + w->repeat;
1323	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1475	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1324	}	1476	}
1325	else	1477	else
1326	ev_timer_stop (EV_A_ w);	1478	ev_timer_stop (EV_A_ w);
1327	}	1479	}
1328	else if (w->repeat)	1480	else if (w->repeat)
		1481	{
		1482	w->at = w->repeat;
1329	ev_timer_start (EV_A_ w);	1483	ev_timer_start (EV_A_ w);
		1484	}
1330	}	1485	}
1331		1486
		1487	#if EV_PERIODICS
1332	void	1488	void
1333	ev_periodic_start (EV_P_ struct ev_periodic *w)	1489	ev_periodic_start (EV_P_ ev_periodic *w)
1334	{	1490	{
1335	if (ev_is_active (w))	1491	if (expect_false (ev_is_active (w)))
1336	return;	1492	return;
1337		1493
1338	if (w->reschedule_cb)	1494	if (w->reschedule_cb)
1339	((WT)w)->at = w->reschedule_cb (w, rt_now);	1495	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1340	else if (w->interval)	1496	else if (w->interval)
1341	{	1497	{
1342	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1498	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1343	/* this formula differs from the one in periodic_reify because we do not always round up */	1499	/* this formula differs from the one in periodic_reify because we do not always round up */
1344	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1500	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1345	}	1501	}
1346		1502
1347	ev_start (EV_A_ (W)w, ++periodiccnt);	1503	ev_start (EV_A_ (W)w, ++periodiccnt);
1348	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1504	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1349	periodics [periodiccnt - 1] = w;	1505	periodics [periodiccnt - 1] = w;
1350	upheap ((WT *)periodics, periodiccnt - 1);	1506	upheap ((WT *)periodics, periodiccnt - 1);
1351		1507
1352	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1508	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1353	}	1509	}
1354		1510
1355	void	1511	void
1356	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1512	ev_periodic_stop (EV_P_ ev_periodic *w)
1357	{	1513	{
1358	ev_clear_pending (EV_A_ (W)w);	1514	ev_clear_pending (EV_A_ (W)w);
1359	if (!ev_is_active (w))	1515	if (expect_false (!ev_is_active (w)))
1360	return;	1516	return;
1361		1517
1362	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1518	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1363		1519
1364	if (((W)w)->active < periodiccnt--)	1520	if (expect_true (((W)w)->active < periodiccnt--))
1365	{	1521	{
1366	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1522	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1367	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1523	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1368	}	1524	}
1369		1525
1370	ev_stop (EV_A_ (W)w);	1526	ev_stop (EV_A_ (W)w);
1371	}	1527	}
1372		1528
1373	void	1529	void
1374	ev_periodic_again (EV_P_ struct ev_periodic *w)	1530	ev_periodic_again (EV_P_ ev_periodic *w)
1375	{	1531	{
		1532	/* TODO: use adjustheap and recalculation */
1376	ev_periodic_stop (EV_A_ w);	1533	ev_periodic_stop (EV_A_ w);
1377	ev_periodic_start (EV_A_ w);	1534	ev_periodic_start (EV_A_ w);
1378	}	1535	}
		1536	#endif
1379		1537
1380	void	1538	void
1381	ev_idle_start (EV_P_ struct ev_idle *w)	1539	ev_idle_start (EV_P_ ev_idle *w)
1382	{	1540	{
1383	if (ev_is_active (w))	1541	if (expect_false (ev_is_active (w)))
1384	return;	1542	return;
1385		1543
1386	ev_start (EV_A_ (W)w, ++idlecnt);	1544	ev_start (EV_A_ (W)w, ++idlecnt);
1387	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));	1545	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1388	idles [idlecnt - 1] = w;	1546	idles [idlecnt - 1] = w;
1389	}	1547	}
1390		1548
1391	void	1549	void
1392	ev_idle_stop (EV_P_ struct ev_idle *w)	1550	ev_idle_stop (EV_P_ ev_idle *w)
1393	{	1551	{
1394	ev_clear_pending (EV_A_ (W)w);	1552	ev_clear_pending (EV_A_ (W)w);
1395	if (ev_is_active (w))	1553	if (expect_false (!ev_is_active (w)))
1396	return;	1554	return;
1397		1555
1398	idles [((W)w)->active - 1] = idles [--idlecnt];	1556	idles [((W)w)->active - 1] = idles [--idlecnt];
1399	ev_stop (EV_A_ (W)w);	1557	ev_stop (EV_A_ (W)w);
1400	}	1558	}
1401		1559
1402	void	1560	void
1403	ev_prepare_start (EV_P_ struct ev_prepare *w)	1561	ev_prepare_start (EV_P_ ev_prepare *w)
1404	{	1562	{
1405	if (ev_is_active (w))	1563	if (expect_false (ev_is_active (w)))
1406	return;	1564	return;
1407		1565
1408	ev_start (EV_A_ (W)w, ++preparecnt);	1566	ev_start (EV_A_ (W)w, ++preparecnt);
1409	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));	1567	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1410	prepares [preparecnt - 1] = w;	1568	prepares [preparecnt - 1] = w;
1411	}	1569	}
1412		1570
1413	void	1571	void
1414	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1572	ev_prepare_stop (EV_P_ ev_prepare *w)
1415	{	1573	{
1416	ev_clear_pending (EV_A_ (W)w);	1574	ev_clear_pending (EV_A_ (W)w);
1417	if (ev_is_active (w))	1575	if (expect_false (!ev_is_active (w)))
1418	return;	1576	return;
1419		1577
1420	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1578	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1421	ev_stop (EV_A_ (W)w);	1579	ev_stop (EV_A_ (W)w);
1422	}	1580	}
1423		1581
1424	void	1582	void
1425	ev_check_start (EV_P_ struct ev_check *w)	1583	ev_check_start (EV_P_ ev_check *w)
1426	{	1584	{
1427	if (ev_is_active (w))	1585	if (expect_false (ev_is_active (w)))
1428	return;	1586	return;
1429		1587
1430	ev_start (EV_A_ (W)w, ++checkcnt);	1588	ev_start (EV_A_ (W)w, ++checkcnt);
1431	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));	1589	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1432	checks [checkcnt - 1] = w;	1590	checks [checkcnt - 1] = w;
1433	}	1591	}
1434		1592
1435	void	1593	void
1436	ev_check_stop (EV_P_ struct ev_check *w)	1594	ev_check_stop (EV_P_ ev_check *w)
1437	{	1595	{
1438	ev_clear_pending (EV_A_ (W)w);	1596	ev_clear_pending (EV_A_ (W)w);
1439	if (ev_is_active (w))	1597	if (expect_false (!ev_is_active (w)))
1440	return;	1598	return;
1441		1599
1442	checks [((W)w)->active - 1] = checks [--checkcnt];	1600	checks [((W)w)->active - 1] = checks [--checkcnt];
1443	ev_stop (EV_A_ (W)w);	1601	ev_stop (EV_A_ (W)w);
1444	}	1602	}
…		…
1446	#ifndef SA_RESTART	1604	#ifndef SA_RESTART
1447	# define SA_RESTART 0	1605	# define SA_RESTART 0
1448	#endif	1606	#endif
1449		1607
1450	void	1608	void
1451	ev_signal_start (EV_P_ struct ev_signal *w)	1609	ev_signal_start (EV_P_ ev_signal *w)
1452	{	1610	{
1453	#if EV_MULTIPLICITY	1611	#if EV_MULTIPLICITY
1454	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1612	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1455	#endif	1613	#endif
1456	if (ev_is_active (w))	1614	if (expect_false (ev_is_active (w)))
1457	return;	1615	return;
1458		1616
1459	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1617	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1460		1618
1461	ev_start (EV_A_ (W)w, 1);	1619	ev_start (EV_A_ (W)w, 1);
1462	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1620	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1463	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1621	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1464		1622
1465	if (!((WL)w)->next)	1623	if (!((WL)w)->next)
1466	{	1624	{
1467	#if WIN32	1625	#if _WIN32
1468	signal (w->signum, sighandler);	1626	signal (w->signum, sighandler);
1469	#else	1627	#else
1470	struct sigaction sa;	1628	struct sigaction sa;
1471	sa.sa_handler = sighandler;	1629	sa.sa_handler = sighandler;
1472	sigfillset (&sa.sa_mask);	1630	sigfillset (&sa.sa_mask);
…		…
1475	#endif	1633	#endif
1476	}	1634	}
1477	}	1635	}
1478		1636
1479	void	1637	void
1480	ev_signal_stop (EV_P_ struct ev_signal *w)	1638	ev_signal_stop (EV_P_ ev_signal *w)
1481	{	1639	{
1482	ev_clear_pending (EV_A_ (W)w);	1640	ev_clear_pending (EV_A_ (W)w);
1483	if (!ev_is_active (w))	1641	if (expect_false (!ev_is_active (w)))
1484	return;	1642	return;
1485		1643
1486	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1644	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1487	ev_stop (EV_A_ (W)w);	1645	ev_stop (EV_A_ (W)w);
1488		1646
1489	if (!signals [w->signum - 1].head)	1647	if (!signals [w->signum - 1].head)
1490	signal (w->signum, SIG_DFL);	1648	signal (w->signum, SIG_DFL);
1491	}	1649	}
1492		1650
1493	void	1651	void
1494	ev_child_start (EV_P_ struct ev_child *w)	1652	ev_child_start (EV_P_ ev_child *w)
1495	{	1653	{
1496	#if EV_MULTIPLICITY	1654	#if EV_MULTIPLICITY
1497	assert (("child watchers are only supported in the default loop", loop == default_loop));	1655	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1498	#endif	1656	#endif
1499	if (ev_is_active (w))	1657	if (expect_false (ev_is_active (w)))
1500	return;	1658	return;
1501		1659
1502	ev_start (EV_A_ (W)w, 1);	1660	ev_start (EV_A_ (W)w, 1);
1503	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1661	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1504	}	1662	}
1505		1663
1506	void	1664	void
1507	ev_child_stop (EV_P_ struct ev_child *w)	1665	ev_child_stop (EV_P_ ev_child *w)
1508	{	1666	{
1509	ev_clear_pending (EV_A_ (W)w);	1667	ev_clear_pending (EV_A_ (W)w);
1510	if (ev_is_active (w))	1668	if (expect_false (!ev_is_active (w)))
1511	return;	1669	return;
1512		1670
1513	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1671	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1514	ev_stop (EV_A_ (W)w);	1672	ev_stop (EV_A_ (W)w);
1515	}	1673	}
1516		1674
		1675	#if EV_MULTIPLICITY
		1676	void
		1677	ev_embed_loop (EV_P_ ev_embed *w)
		1678	{
		1679	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1680	}
		1681
		1682	static void
		1683	embed_cb (EV_P_ ev_io *io, int revents)
		1684	{
		1685	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		1686
		1687	if (ev_cb (w))
		1688	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1689	else
		1690	ev_embed_loop (loop, w);
		1691	}
		1692
		1693	void
		1694	ev_embed_start (EV_P_ ev_embed *w)
		1695	{
		1696	if (expect_false (ev_is_active (w)))
		1697	return;
		1698
		1699	{
		1700	struct ev_loop *loop = w->loop;
		1701	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1702	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1703	}
		1704
		1705	ev_set_priority (&w->io, ev_priority (w));
		1706	ev_io_start (EV_A_ &w->io);
		1707	ev_start (EV_A_ (W)w, 1);
		1708	}
		1709
		1710	void
		1711	ev_embed_stop (EV_P_ ev_embed *w)
		1712	{
		1713	ev_clear_pending (EV_A_ (W)w);
		1714	if (expect_false (!ev_is_active (w)))
		1715	return;
		1716
		1717	ev_io_stop (EV_A_ &w->io);
		1718	ev_stop (EV_A_ (W)w);
		1719	}
		1720	#endif
		1721
1517	/*****************************************************************************/	1722	/*****************************************************************************/
1518		1723
1519	struct ev_once	1724	struct ev_once
1520	{	1725	{
1521	struct ev_io io;	1726	ev_io io;
1522	struct ev_timer to;	1727	ev_timer to;
1523	void (*cb)(int revents, void *arg);	1728	void (*cb)(int revents, void *arg);
1524	void *arg;	1729	void *arg;
1525	};	1730	};
1526		1731
1527	static void	1732	static void
…		…
1536		1741
1537	cb (revents, arg);	1742	cb (revents, arg);
1538	}	1743	}
1539		1744
1540	static void	1745	static void
1541	once_cb_io (EV_P_ struct ev_io *w, int revents)	1746	once_cb_io (EV_P_ ev_io *w, int revents)
1542	{	1747	{
1543	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1748	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1544	}	1749	}
1545		1750
1546	static void	1751	static void
1547	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1752	once_cb_to (EV_P_ ev_timer *w, int revents)
1548	{	1753	{
1549	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1754	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1550	}	1755	}
1551		1756
1552	void	1757	void
1553	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1758	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1554	{	1759	{
1555	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	1760	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1556		1761
1557	if (!once)	1762	if (expect_false (!once))
		1763	{
1558	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1764	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1559	else	1765	return;
1560	{	1766	}
		1767
1561	once->cb = cb;	1768	once->cb = cb;
1562	once->arg = arg;	1769	once->arg = arg;
1563		1770
1564	ev_watcher_init (&once->io, once_cb_io);	1771	ev_init (&once->io, once_cb_io);
1565	if (fd >= 0)	1772	if (fd >= 0)
1566	{	1773	{
1567	ev_io_set (&once->io, fd, events);	1774	ev_io_set (&once->io, fd, events);
1568	ev_io_start (EV_A_ &once->io);	1775	ev_io_start (EV_A_ &once->io);
1569	}	1776	}
1570		1777
1571	ev_watcher_init (&once->to, once_cb_to);	1778	ev_init (&once->to, once_cb_to);
1572	if (timeout >= 0.)	1779	if (timeout >= 0.)
1573	{	1780	{
1574	ev_timer_set (&once->to, timeout, 0.);	1781	ev_timer_set (&once->to, timeout, 0.);
1575	ev_timer_start (EV_A_ &once->to);	1782	ev_timer_start (EV_A_ &once->to);
1576	}
1577	}	1783	}
1578	}	1784	}
1579		1785
		1786	#ifdef __cplusplus
		1787	}
		1788	#endif
		1789

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