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

Comparing libev/ev.c (file contents):
Revision 1.76 by root, Wed Nov 7 18:47:26 2007 UTC vs.
Revision 1.139 by root, Sun Nov 25 09:24:37 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
…		…
316		386
317	++base;	387	++base;
318	}	388	}
319	}	389	}
320		390
321	static void	391	void
322	event (EV_P_ W w, int events)	392	ev_feed_event (EV_P_ void *w, int revents)
323	{	393	{
324	if (w->pending)	394	W w_ = (W)w;
		395
		396	if (expect_false (w_->pending))
325	{	397	{
326	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	398	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
327	return;	399	return;
328	}	400	}
329		401
330	w->pending = ++pendingcnt [ABSPRI (w)];	402	w_->pending = ++pendingcnt [ABSPRI (w_)];
331	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);
332	pendings [ABSPRI (w)][w->pending - 1].w = w;	404	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
333	pendings [ABSPRI (w)][w->pending - 1].events = events;	405	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
334	}	406	}
335		407
336	static void	408	static void
337	queue_events (EV_P_ W *events, int eventcnt, int type)	409	queue_events (EV_P_ W *events, int eventcnt, int type)
338	{	410	{
339	int i;	411	int i;
340		412
341	for (i = 0; i < eventcnt; ++i)	413	for (i = 0; i < eventcnt; ++i)
342	event (EV_A_ events [i], type);	414	ev_feed_event (EV_A_ events [i], type);
343	}	415	}
344		416
345	static void	417	inline void
346	fd_event (EV_P_ int fd, int events)	418	fd_event (EV_P_ int fd, int revents)
347	{	419	{
348	ANFD *anfd = anfds + fd;	420	ANFD *anfd = anfds + fd;
349	struct ev_io *w;	421	ev_io *w;
350		422
351	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)
352	{	424	{
353	int ev = w->events & events;	425	int ev = w->events & revents;
354		426
355	if (ev)	427	if (ev)
356	event (EV_A_ (W)w, ev);	428	ev_feed_event (EV_A_ (W)w, ev);
357	}	429	}
		430	}
		431
		432	void
		433	ev_feed_fd_event (EV_P_ int fd, int revents)
		434	{
		435	fd_event (EV_A_ fd, revents);
358	}	436	}
359		437
360	/*****************************************************************************/	438	/*****************************************************************************/
361		439
362	static void	440	inline void
363	fd_reify (EV_P)	441	fd_reify (EV_P)
364	{	442	{
365	int i;	443	int i;
366		444
367	for (i = 0; i < fdchangecnt; ++i)	445	for (i = 0; i < fdchangecnt; ++i)
368	{	446	{
369	int fd = fdchanges [i];	447	int fd = fdchanges [i];
370	ANFD *anfd = anfds + fd;	448	ANFD *anfd = anfds + fd;
371	struct ev_io *w;	449	ev_io *w;
372		450
373	int events = 0;	451	int events = 0;
374		452
375	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)
376	events \|= w->events;	454	events \|= w->events;
377		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
378	anfd->reify = 0;	465	anfd->reify = 0;
379		466
380	method_modify (EV_A_ fd, anfd->events, events);	467	backend_modify (EV_A_ fd, anfd->events, events);
381	anfd->events = events;	468	anfd->events = events;
382	}	469	}
383		470
384	fdchangecnt = 0;	471	fdchangecnt = 0;
385	}	472	}
386		473
387	static void	474	static void
388	fd_change (EV_P_ int fd)	475	fd_change (EV_P_ int fd)
389	{	476	{
390	if (anfds [fd].reify)	477	if (expect_false (anfds [fd].reify))
391	return;	478	return;
392		479
393	anfds [fd].reify = 1;	480	anfds [fd].reify = 1;
394		481
395	++fdchangecnt;	482	++fdchangecnt;
396	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	483	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
397	fdchanges [fdchangecnt - 1] = fd;	484	fdchanges [fdchangecnt - 1] = fd;
398	}	485	}
399		486
400	static void	487	static void
401	fd_kill (EV_P_ int fd)	488	fd_kill (EV_P_ int fd)
402	{	489	{
403	struct ev_io *w;	490	ev_io *w;
404		491
405	while ((w = (struct ev_io *)anfds [fd].head))	492	while ((w = (ev_io *)anfds [fd].head))
406	{	493	{
407	ev_io_stop (EV_A_ w);	494	ev_io_stop (EV_A_ w);
408	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);
409	}	496	}
410	}	497	}
411		498
412	static int	499	inline int
413	fd_valid (int fd)	500	fd_valid (int fd)
414	{	501	{
415	#ifdef WIN32	502	#ifdef _WIN32
416	return !!win32_get_osfhandle (fd);	503	return _get_osfhandle (fd) != -1;
417	#else	504	#else
418	return fcntl (fd, F_GETFD) != -1;	505	return fcntl (fd, F_GETFD) != -1;
419	#endif	506	#endif
420	}	507	}
421		508
…		…
443	fd_kill (EV_A_ fd);	530	fd_kill (EV_A_ fd);
444	return;	531	return;
445	}	532	}
446	}	533	}
447		534
448	/* 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 */
449	static void	536	static void
450	fd_rearm_all (EV_P)	537	fd_rearm_all (EV_P)
451	{	538	{
452	int fd;	539	int fd;
453		540
…		…
501		588
502	heap [k] = w;	589	heap [k] = w;
503	((W)heap [k])->active = k + 1;	590	((W)heap [k])->active = k + 1;
504	}	591	}
505		592
		593	inline void
		594	adjustheap (WT *heap, int N, int k)
		595	{
		596	upheap (heap, k);
		597	downheap (heap, N, k);
		598	}
		599
506	/*****************************************************************************/	600	/*****************************************************************************/
507		601
508	typedef struct	602	typedef struct
509	{	603	{
510	WL head;	604	WL head;
…		…
514	static ANSIG *signals;	608	static ANSIG *signals;
515	static int signalmax;	609	static int signalmax;
516		610
517	static int sigpipe [2];	611	static int sigpipe [2];
518	static sig_atomic_t volatile gotsig;	612	static sig_atomic_t volatile gotsig;
519	static struct ev_io sigev;	613	static ev_io sigev;
520		614
521	static void	615	static void
522	signals_init (ANSIG *base, int count)	616	signals_init (ANSIG *base, int count)
523	{	617	{
524	while (count--)	618	while (count--)
…		…
531	}	625	}
532		626
533	static void	627	static void
534	sighandler (int signum)	628	sighandler (int signum)
535	{	629	{
536	#if WIN32	630	#if _WIN32
537	signal (signum, sighandler);	631	signal (signum, sighandler);
538	#endif	632	#endif
539		633
540	signals [signum - 1].gotsig = 1;	634	signals [signum - 1].gotsig = 1;
541		635
542	if (!gotsig)	636	if (!gotsig)
543	{	637	{
544	int old_errno = errno;	638	int old_errno = errno;
545	gotsig = 1;	639	gotsig = 1;
546	#ifdef WIN32
547	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
548	#else
549	write (sigpipe [1], &signum, 1);	640	write (sigpipe [1], &signum, 1);
550	#endif
551	errno = old_errno;	641	errno = old_errno;
552	}	642	}
553	}	643	}
554		644
555	static void	645	void
556	sigcb (EV_P_ struct ev_io *iow, int revents)	646	ev_feed_signal_event (EV_P_ int signum)
557	{	647	{
558	WL w;	648	WL w;
		649
		650	#if EV_MULTIPLICITY
		651	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		652	#endif
		653
		654	--signum;
		655
		656	if (signum < 0 \|\| signum >= signalmax)
		657	return;
		658
		659	signals [signum].gotsig = 0;
		660
		661	for (w = signals [signum].head; w; w = w->next)
		662	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		663	}
		664
		665	static void
		666	sigcb (EV_P_ ev_io *iow, int revents)
		667	{
559	int signum;	668	int signum;
560		669
561	#ifdef WIN32
562	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
563	#else
564	read (sigpipe [0], &revents, 1);	670	read (sigpipe [0], &revents, 1);
565	#endif
566	gotsig = 0;	671	gotsig = 0;
567		672
568	for (signum = signalmax; signum--; )	673	for (signum = signalmax; signum--; )
569	if (signals [signum].gotsig)	674	if (signals [signum].gotsig)
570	{	675	ev_feed_signal_event (EV_A_ signum + 1);
571	signals [signum].gotsig = 0;	676	}
572		677
573	for (w = signals [signum].head; w; w = w->next)	678	static void
574	event (EV_A_ (W)w, EV_SIGNAL);	679	fd_intern (int fd)
575	}	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
576	}	688	}
577		689
578	static void	690	static void
579	siginit (EV_P)	691	siginit (EV_P)
580	{	692	{
581	#ifndef WIN32	693	fd_intern (sigpipe [0]);
582	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	694	fd_intern (sigpipe [1]);
583	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
584
585	/* rather than sort out wether we really need nb, set it */
586	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
587	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
588	#endif
589		695
590	ev_io_set (&sigev, sigpipe [0], EV_READ);	696	ev_io_set (&sigev, sigpipe [0], EV_READ);
591	ev_io_start (EV_A_ &sigev);	697	ev_io_start (EV_A_ &sigev);
592	ev_unref (EV_A); /* child watcher should not keep loop alive */	698	ev_unref (EV_A); /* child watcher should not keep loop alive */
593	}	699	}
594		700
595	/*****************************************************************************/	701	/*****************************************************************************/
596		702
597	static struct ev_child *childs [PID_HASHSIZE];	703	static ev_child *childs [PID_HASHSIZE];
598		704
599	#ifndef WIN32	705	#ifndef _WIN32
600		706
601	static struct ev_signal childev;	707	static ev_signal childev;
602		708
603	#ifndef WCONTINUED	709	#ifndef WCONTINUED
604	# define WCONTINUED 0	710	# define WCONTINUED 0
605	#endif	711	#endif
606		712
607	static void	713	static void
608	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)
609	{	715	{
610	struct ev_child *w;	716	ev_child *w;
611		717
612	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)
613	if (w->pid == pid \|\| !w->pid)	719	if (w->pid == pid \|\| !w->pid)
614	{	720	{
615	ev_priority (w) = ev_priority (sw); /* need to do it now */	721	ev_priority (w) = ev_priority (sw); /* need to do it now */
616	w->rpid = pid;	722	w->rpid = pid;
617	w->rstatus = status;	723	w->rstatus = status;
618	event (EV_A_ (W)w, EV_CHILD);	724	ev_feed_event (EV_A_ (W)w, EV_CHILD);
619	}	725	}
620	}	726	}
621		727
622	static void	728	static void
623	childcb (EV_P_ struct ev_signal *sw, int revents)	729	childcb (EV_P_ ev_signal *sw, int revents)
624	{	730	{
625	int pid, status;	731	int pid, status;
626		732
627	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	733	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
628	{	734	{
629	/* 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 */
630	event (EV_A_ (W)sw, EV_SIGNAL);	737	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
631		738
632	child_reap (EV_A_ sw, pid, pid, status);	739	child_reap (EV_A_ sw, pid, pid, status);
633	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 */
634	}	741	}
635	}	742	}
636		743
637	#endif	744	#endif
638		745
639	/*****************************************************************************/	746	/*****************************************************************************/
640		747
		748	#if EV_USE_PORT
		749	# include "ev_port.c"
		750	#endif
641	#if EV_USE_KQUEUE	751	#if EV_USE_KQUEUE
642	# include "ev_kqueue.c"	752	# include "ev_kqueue.c"
643	#endif	753	#endif
644	#if EV_USE_EPOLL	754	#if EV_USE_EPOLL
645	# include "ev_epoll.c"	755	# include "ev_epoll.c"
…		…
665		775
666	/* 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 */
667	static int	777	static int
668	enable_secure (void)	778	enable_secure (void)
669	{	779	{
670	#ifdef WIN32	780	#ifdef _WIN32
671	return 0;	781	return 0;
672	#else	782	#else
673	return getuid () != geteuid ()	783	return getuid () != geteuid ()
674	\|\| getgid () != getegid ();	784	\|\| getgid () != getegid ();
675	#endif	785	#endif
676	}	786	}
677		787
678	int	788	unsigned int
679	ev_method (EV_P)	789	ev_supported_backends (void)
680	{	790	{
681	return method;	791	unsigned int flags = 0;
682	}
683		792
684	static void	793	if (EV_USE_PORT ) flags \|= EVBACKEND_PORT;
685	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)
686	{	804	{
687	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)
688	{	838	{
689	#if EV_USE_MONOTONIC	839	#if EV_USE_MONOTONIC
690	{	840	{
691	struct timespec ts;	841	struct timespec ts;
692	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	842	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
693	have_monotonic = 1;	843	have_monotonic = 1;
694	}	844	}
695	#endif	845	#endif
696		846
697	rt_now = ev_time ();	847	ev_rt_now = ev_time ();
698	mn_now = get_clock ();	848	mn_now = get_clock ();
699	now_floor = mn_now;	849	now_floor = mn_now;
700	rtmn_diff = rt_now - mn_now;	850	rtmn_diff = ev_rt_now - mn_now;
701		851
702	if (methods == EVMETHOD_AUTO)	852	if (!(flags & EVFLAG_NOENV)
703	if (!enable_secure () && getenv ("LIBEV_METHODS"))	853	&& !enable_secure ()
		854	&& getenv ("LIBEV_FLAGS"))
704	methods = atoi (getenv ("LIBEV_METHODS"));	855	flags = atoi (getenv ("LIBEV_FLAGS"));
705	else
706	methods = EVMETHOD_ANY;
707		856
708	method = 0;	857	if (!(flags & 0x0000ffffUL))
709	#if EV_USE_WIN32	858	flags \|= ev_recommended_backends ();
710	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);
711	#endif	863	#endif
712	#if EV_USE_KQUEUE	864	#if EV_USE_KQUEUE
713	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	865	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
714	#endif	866	#endif
715	#if EV_USE_EPOLL	867	#if EV_USE_EPOLL
716	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	868	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
717	#endif	869	#endif
718	#if EV_USE_POLL	870	#if EV_USE_POLL
719	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	871	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
720	#endif	872	#endif
721	#if EV_USE_SELECT	873	#if EV_USE_SELECT
722	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	874	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
723	#endif	875	#endif
724		876
725	ev_watcher_init (&sigev, sigcb);	877	ev_init (&sigev, sigcb);
726	ev_set_priority (&sigev, EV_MAXPRI);	878	ev_set_priority (&sigev, EV_MAXPRI);
727	}	879	}
728	}	880	}
729		881
730	void	882	static void
731	loop_destroy (EV_P)	883	loop_destroy (EV_P)
732	{	884	{
733	int i;	885	int i;
734		886
735	#if EV_USE_WIN32	887	#if EV_USE_PORT
736	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	888	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
737	#endif	889	#endif
738	#if EV_USE_KQUEUE	890	#if EV_USE_KQUEUE
739	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	891	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
740	#endif	892	#endif
741	#if EV_USE_EPOLL	893	#if EV_USE_EPOLL
742	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	894	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
743	#endif	895	#endif
744	#if EV_USE_POLL	896	#if EV_USE_POLL
745	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	897	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
746	#endif	898	#endif
747	#if EV_USE_SELECT	899	#if EV_USE_SELECT
748	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	900	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
749	#endif	901	#endif
750		902
751	for (i = NUMPRI; i--; )	903	for (i = NUMPRI; i--; )
752	array_free (pending, [i]);	904	array_free (pending, [i]);
753		905
754	/* have to use the microsoft-never-gets-it-right macro */	906	/* have to use the microsoft-never-gets-it-right macro */
755	array_free_microshit (fdchange);	907	array_free (fdchange, EMPTY0);
756	array_free_microshit (timer);	908	array_free (timer, EMPTY0);
757	array_free_microshit (periodic);	909	#if EV_PERIODICS
758	array_free_microshit (idle);	910	array_free (periodic, EMPTY0);
759	array_free_microshit (prepare);	911	#endif
760	array_free_microshit (check);	912	array_free (idle, EMPTY0);
		913	array_free (prepare, EMPTY0);
		914	array_free (check, EMPTY0);
761		915
762	method = 0;	916	backend = 0;
763	}	917	}
764		918
765	static void	919	static void
766	loop_fork (EV_P)	920	loop_fork (EV_P)
767	{	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
768	#if EV_USE_EPOLL	928	#if EV_USE_EPOLL
769	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	929	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
770	#endif
771	#if EV_USE_KQUEUE
772	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
773	#endif	930	#endif
774		931
775	if (ev_is_active (&sigev))	932	if (ev_is_active (&sigev))
776	{	933	{
777	/* default loop */	934	/* default loop */
…		…
790	postfork = 0;	947	postfork = 0;
791	}	948	}
792		949
793	#if EV_MULTIPLICITY	950	#if EV_MULTIPLICITY
794	struct ev_loop *	951	struct ev_loop *
795	ev_loop_new (int methods)	952	ev_loop_new (unsigned int flags)
796	{	953	{
797	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));
798		955
799	memset (loop, 0, sizeof (struct ev_loop));	956	memset (loop, 0, sizeof (struct ev_loop));
800		957
801	loop_init (EV_A_ methods);	958	loop_init (EV_A_ flags);
802		959
803	if (ev_method (EV_A))	960	if (ev_backend (EV_A))
804	return loop;	961	return loop;
805		962
806	return 0;	963	return 0;
807	}	964	}
808		965
…		…
820	}	977	}
821		978
822	#endif	979	#endif
823		980
824	#if EV_MULTIPLICITY	981	#if EV_MULTIPLICITY
825	struct ev_loop default_loop_struct;
826	static struct ev_loop *default_loop;
827
828	struct ev_loop *	982	struct ev_loop *
		983	ev_default_loop_init (unsigned int flags)
829	#else	984	#else
830	static int default_loop;
831
832	int	985	int
		986	ev_default_loop (unsigned int flags)
833	#endif	987	#endif
834	ev_default_loop (int methods)
835	{	988	{
836	if (sigpipe [0] == sigpipe [1])	989	if (sigpipe [0] == sigpipe [1])
837	if (pipe (sigpipe))	990	if (pipe (sigpipe))
838	return 0;	991	return 0;
839		992
840	if (!default_loop)	993	if (!ev_default_loop_ptr)
841	{	994	{
842	#if EV_MULTIPLICITY	995	#if EV_MULTIPLICITY
843	struct ev_loop *loop = default_loop = &default_loop_struct;	996	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
844	#else	997	#else
845	default_loop = 1;	998	ev_default_loop_ptr = 1;
846	#endif	999	#endif
847		1000
848	loop_init (EV_A_ methods);	1001	loop_init (EV_A_ flags);
849		1002
850	if (ev_method (EV_A))	1003	if (ev_backend (EV_A))
851	{	1004	{
852	siginit (EV_A);	1005	siginit (EV_A);
853		1006
854	#ifndef WIN32	1007	#ifndef _WIN32
855	ev_signal_init (&childev, childcb, SIGCHLD);	1008	ev_signal_init (&childev, childcb, SIGCHLD);
856	ev_set_priority (&childev, EV_MAXPRI);	1009	ev_set_priority (&childev, EV_MAXPRI);
857	ev_signal_start (EV_A_ &childev);	1010	ev_signal_start (EV_A_ &childev);
858	ev_unref (EV_A); /* child watcher should not keep loop alive */	1011	ev_unref (EV_A); /* child watcher should not keep loop alive */
859	#endif	1012	#endif
860	}	1013	}
861	else	1014	else
862	default_loop = 0;	1015	ev_default_loop_ptr = 0;
863	}	1016	}
864		1017
865	return default_loop;	1018	return ev_default_loop_ptr;
866	}	1019	}
867		1020
868	void	1021	void
869	ev_default_destroy (void)	1022	ev_default_destroy (void)
870	{	1023	{
871	#if EV_MULTIPLICITY	1024	#if EV_MULTIPLICITY
872	struct ev_loop *loop = default_loop;	1025	struct ev_loop *loop = ev_default_loop_ptr;
873	#endif	1026	#endif
874		1027
875	#ifndef WIN32	1028	#ifndef _WIN32
876	ev_ref (EV_A); /* child watcher */	1029	ev_ref (EV_A); /* child watcher */
877	ev_signal_stop (EV_A_ &childev);	1030	ev_signal_stop (EV_A_ &childev);
878	#endif	1031	#endif
879		1032
880	ev_ref (EV_A); /* signal watcher */	1033	ev_ref (EV_A); /* signal watcher */
…		…
888		1041
889	void	1042	void
890	ev_default_fork (void)	1043	ev_default_fork (void)
891	{	1044	{
892	#if EV_MULTIPLICITY	1045	#if EV_MULTIPLICITY
893	struct ev_loop *loop = default_loop;	1046	struct ev_loop *loop = ev_default_loop_ptr;
894	#endif	1047	#endif
895		1048
896	if (method)	1049	if (backend)
897	postfork = 1;	1050	postfork = 1;
898	}	1051	}
899		1052
900	/*****************************************************************************/	1053	/*****************************************************************************/
901		1054
…		…
909	return 1;	1062	return 1;
910		1063
911	return 0;	1064	return 0;
912	}	1065	}
913		1066
914	static void	1067	inline void
915	call_pending (EV_P)	1068	call_pending (EV_P)
916	{	1069	{
917	int pri;	1070	int pri;
918		1071
919	for (pri = NUMPRI; pri--; )	1072	for (pri = NUMPRI; pri--; )
920	while (pendingcnt [pri])	1073	while (pendingcnt [pri])
921	{	1074	{
922	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1075	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
923		1076
924	if (p->w)	1077	if (expect_true (p->w))
925	{	1078	{
		1079	assert (("non-pending watcher on pending list", p->w->pending));
		1080
926	p->w->pending = 0;	1081	p->w->pending = 0;
927	p->w->cb (EV_A_ p->w, p->events);	1082	EV_CB_INVOKE (p->w, p->events);
928	}	1083	}
929	}	1084	}
930	}	1085	}
931		1086
932	static void	1087	inline void
933	timers_reify (EV_P)	1088	timers_reify (EV_P)
934	{	1089	{
935	while (timercnt && ((WT)timers [0])->at <= mn_now)	1090	while (timercnt && ((WT)timers [0])->at <= mn_now)
936	{	1091	{
937	struct ev_timer *w = timers [0];	1092	ev_timer *w = timers [0];
938		1093
939	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1094	assert (("inactive timer on timer heap detected", ev_is_active (w)));
940		1095
941	/* first reschedule or stop timer */	1096	/* first reschedule or stop timer */
942	if (w->repeat)	1097	if (w->repeat)
943	{	1098	{
944	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1099	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1100
945	((WT)w)->at = mn_now + w->repeat;	1101	((WT)w)->at += w->repeat;
		1102	if (((WT)w)->at < mn_now)
		1103	((WT)w)->at = mn_now;
		1104
946	downheap ((WT *)timers, timercnt, 0);	1105	downheap ((WT *)timers, timercnt, 0);
947	}	1106	}
948	else	1107	else
949	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1108	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
950		1109
951	event (EV_A_ (W)w, EV_TIMEOUT);	1110	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
952	}	1111	}
953	}	1112	}
954		1113
955	static void	1114	#if EV_PERIODICS
		1115	inline void
956	periodics_reify (EV_P)	1116	periodics_reify (EV_P)
957	{	1117	{
958	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1118	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
959	{	1119	{
960	struct ev_periodic *w = periodics [0];	1120	ev_periodic *w = periodics [0];
961		1121
962	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1122	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
963		1123
964	/* first reschedule or stop timer */	1124	/* first reschedule or stop timer */
965	if (w->interval)	1125	if (w->reschedule_cb)
966	{	1126	{
		1127	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1128	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1129	downheap ((WT *)periodics, periodiccnt, 0);
		1130	}
		1131	else if (w->interval)
		1132	{
967	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1133	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
968	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1134	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
969	downheap ((WT *)periodics, periodiccnt, 0);	1135	downheap ((WT *)periodics, periodiccnt, 0);
970	}	1136	}
971	else	1137	else
972	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1138	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
973		1139
974	event (EV_A_ (W)w, EV_PERIODIC);	1140	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
975	}	1141	}
976	}	1142	}
977		1143
978	static void	1144	static void
979	periodics_reschedule (EV_P)	1145	periodics_reschedule (EV_P)
…		…
981	int i;	1147	int i;
982		1148
983	/* adjust periodics after time jump */	1149	/* adjust periodics after time jump */
984	for (i = 0; i < periodiccnt; ++i)	1150	for (i = 0; i < periodiccnt; ++i)
985	{	1151	{
986	struct ev_periodic *w = periodics [i];	1152	ev_periodic *w = periodics [i];
987		1153
		1154	if (w->reschedule_cb)
		1155	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
988	if (w->interval)	1156	else if (w->interval)
989	{
990	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1157	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
991
992	if (fabs (diff) >= 1e-4)
993	{
994	ev_periodic_stop (EV_A_ w);
995	ev_periodic_start (EV_A_ w);
996
997	i = 0; /* restart loop, inefficient, but time jumps should be rare */
998	}
999	}
1000	}	1158	}
		1159
		1160	/* now rebuild the heap */
		1161	for (i = periodiccnt >> 1; i--; )
		1162	downheap ((WT *)periodics, periodiccnt, i);
1001	}	1163	}
		1164	#endif
1002		1165
1003	inline int	1166	inline int
1004	time_update_monotonic (EV_P)	1167	time_update_monotonic (EV_P)
1005	{	1168	{
1006	mn_now = get_clock ();	1169	mn_now = get_clock ();
1007		1170
1008	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1171	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1009	{	1172	{
1010	rt_now = rtmn_diff + mn_now;	1173	ev_rt_now = rtmn_diff + mn_now;
1011	return 0;	1174	return 0;
1012	}	1175	}
1013	else	1176	else
1014	{	1177	{
1015	now_floor = mn_now;	1178	now_floor = mn_now;
1016	rt_now = ev_time ();	1179	ev_rt_now = ev_time ();
1017	return 1;	1180	return 1;
1018	}	1181	}
1019	}	1182	}
1020		1183
1021	static void	1184	inline void
1022	time_update (EV_P)	1185	time_update (EV_P)
1023	{	1186	{
1024	int i;	1187	int i;
1025		1188
1026	#if EV_USE_MONOTONIC	1189	#if EV_USE_MONOTONIC
…		…
1028	{	1191	{
1029	if (time_update_monotonic (EV_A))	1192	if (time_update_monotonic (EV_A))
1030	{	1193	{
1031	ev_tstamp odiff = rtmn_diff;	1194	ev_tstamp odiff = rtmn_diff;
1032		1195
1033	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1196	/* loop a few times, before making important decisions.
		1197	* on the choice of "4": one iteration isn't enough,
		1198	* in case we get preempted during the calls to
		1199	* ev_time and get_clock. a second call is almost guarenteed
		1200	* to succeed in that case, though. and looping a few more times
		1201	* doesn't hurt either as we only do this on time-jumps or
		1202	* in the unlikely event of getting preempted here.
		1203	*/
		1204	for (i = 4; --i; )
1034	{	1205	{
1035	rtmn_diff = rt_now - mn_now;	1206	rtmn_diff = ev_rt_now - mn_now;
1036		1207
1037	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1208	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1038	return; /* all is well */	1209	return; /* all is well */
1039		1210
1040	rt_now = ev_time ();	1211	ev_rt_now = ev_time ();
1041	mn_now = get_clock ();	1212	mn_now = get_clock ();
1042	now_floor = mn_now;	1213	now_floor = mn_now;
1043	}	1214	}
1044		1215
		1216	# if EV_PERIODICS
1045	periodics_reschedule (EV_A);	1217	periodics_reschedule (EV_A);
		1218	# endif
1046	/* no timer adjustment, as the monotonic clock doesn't jump */	1219	/* no timer adjustment, as the monotonic clock doesn't jump */
1047	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1220	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1048	}	1221	}
1049	}	1222	}
1050	else	1223	else
1051	#endif	1224	#endif
1052	{	1225	{
1053	rt_now = ev_time ();	1226	ev_rt_now = ev_time ();
1054		1227
1055	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1228	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1056	{	1229	{
		1230	#if EV_PERIODICS
1057	periodics_reschedule (EV_A);	1231	periodics_reschedule (EV_A);
		1232	#endif
1058		1233
1059	/* adjust timers. this is easy, as the offset is the same for all */	1234	/* adjust timers. this is easy, as the offset is the same for all */
1060	for (i = 0; i < timercnt; ++i)	1235	for (i = 0; i < timercnt; ++i)
1061	((WT)timers [i])->at += rt_now - mn_now;	1236	((WT)timers [i])->at += ev_rt_now - mn_now;
1062	}	1237	}
1063		1238
1064	mn_now = rt_now;	1239	mn_now = ev_rt_now;
1065	}	1240	}
1066	}	1241	}
1067		1242
1068	void	1243	void
1069	ev_ref (EV_P)	1244	ev_ref (EV_P)
…		…
1080	static int loop_done;	1255	static int loop_done;
1081		1256
1082	void	1257	void
1083	ev_loop (EV_P_ int flags)	1258	ev_loop (EV_P_ int flags)
1084	{	1259	{
1085	double block;
1086	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1260	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
		1261	? EVUNLOOP_ONE
		1262	: EVUNLOOP_CANCEL;
1087		1263
1088	do	1264	while (activecnt)
1089	{	1265	{
1090	/* queue check watchers (and execute them) */	1266	/* queue check watchers (and execute them) */
1091	if (expect_false (preparecnt))	1267	if (expect_false (preparecnt))
1092	{	1268	{
1093	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1269	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1100		1276
1101	/* update fd-related kernel structures */	1277	/* update fd-related kernel structures */
1102	fd_reify (EV_A);	1278	fd_reify (EV_A);
1103		1279
1104	/* calculate blocking time */	1280	/* calculate blocking time */
		1281	{
		1282	double block;
1105		1283
1106	/* we only need this for !monotonic clock or timers, but as we basically	1284	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1107	always have timers, we just calculate it always */	1285	block = 0.; /* do not block at all */
		1286	else
		1287	{
		1288	/* update time to cancel out callback processing overhead */
1108	#if EV_USE_MONOTONIC	1289	#if EV_USE_MONOTONIC
1109	if (expect_true (have_monotonic))	1290	if (expect_true (have_monotonic))
1110	time_update_monotonic (EV_A);	1291	time_update_monotonic (EV_A);
1111	else	1292	else
1112	#endif	1293	#endif
1113	{	1294	{
1114	rt_now = ev_time ();	1295	ev_rt_now = ev_time ();
1115	mn_now = rt_now;	1296	mn_now = ev_rt_now;
1116	}	1297	}
1117		1298
1118	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1119	block = 0.;
1120	else
1121	{
1122	block = MAX_BLOCKTIME;	1299	block = MAX_BLOCKTIME;
1123		1300
1124	if (timercnt)	1301	if (timercnt)
1125	{	1302	{
1126	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1303	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1127	if (block > to) block = to;	1304	if (block > to) block = to;
1128	}	1305	}
1129		1306
		1307	#if EV_PERIODICS
1130	if (periodiccnt)	1308	if (periodiccnt)
1131	{	1309	{
1132	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1310	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1133	if (block > to) block = to;	1311	if (block > to) block = to;
1134	}	1312	}
		1313	#endif
1135		1314
1136	if (block < 0.) block = 0.;	1315	if (expect_false (block < 0.)) block = 0.;
1137	}	1316	}
1138		1317
1139	method_poll (EV_A_ block);	1318	backend_poll (EV_A_ block);
		1319	}
1140		1320
1141	/* update rt_now, do magic */	1321	/* update ev_rt_now, do magic */
1142	time_update (EV_A);	1322	time_update (EV_A);
1143		1323
1144	/* queue pending timers and reschedule them */	1324	/* queue pending timers and reschedule them */
1145	timers_reify (EV_A); /* relative timers called last */	1325	timers_reify (EV_A); /* relative timers called last */
		1326	#if EV_PERIODICS
1146	periodics_reify (EV_A); /* absolute timers called first */	1327	periodics_reify (EV_A); /* absolute timers called first */
		1328	#endif
1147		1329
1148	/* queue idle watchers unless io or timers are pending */	1330	/* queue idle watchers unless other events are pending */
1149	if (idlecnt && !any_pending (EV_A))	1331	if (idlecnt && !any_pending (EV_A))
1150	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1332	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1151		1333
1152	/* queue check watchers, to be executed first */	1334	/* queue check watchers, to be executed first */
1153	if (checkcnt)	1335	if (expect_false (checkcnt))
1154	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1336	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1155		1337
1156	call_pending (EV_A);	1338	call_pending (EV_A);
1157	}
1158	while (activecnt && !loop_done);
1159		1339
1160	if (loop_done != 2)	1340	if (expect_false (loop_done))
1161	loop_done = 0;	1341	break;
		1342	}
		1343
		1344	if (loop_done == EVUNLOOP_ONE)
		1345	loop_done = EVUNLOOP_CANCEL;
1162	}	1346	}
1163		1347
1164	void	1348	void
1165	ev_unloop (EV_P_ int how)	1349	ev_unloop (EV_P_ int how)
1166	{	1350	{
…		…
1219	}	1403	}
1220		1404
1221	/*****************************************************************************/	1405	/*****************************************************************************/
1222		1406
1223	void	1407	void
1224	ev_io_start (EV_P_ struct ev_io *w)	1408	ev_io_start (EV_P_ ev_io *w)
1225	{	1409	{
1226	int fd = w->fd;	1410	int fd = w->fd;
1227		1411
1228	if (ev_is_active (w))	1412	if (expect_false (ev_is_active (w)))
1229	return;	1413	return;
1230		1414
1231	assert (("ev_io_start called with negative fd", fd >= 0));	1415	assert (("ev_io_start called with negative fd", fd >= 0));
1232		1416
1233	ev_start (EV_A_ (W)w, 1);	1417	ev_start (EV_A_ (W)w, 1);
…		…
1236		1420
1237	fd_change (EV_A_ fd);	1421	fd_change (EV_A_ fd);
1238	}	1422	}
1239		1423
1240	void	1424	void
1241	ev_io_stop (EV_P_ struct ev_io *w)	1425	ev_io_stop (EV_P_ ev_io *w)
1242	{	1426	{
1243	ev_clear_pending (EV_A_ (W)w);	1427	ev_clear_pending (EV_A_ (W)w);
1244	if (!ev_is_active (w))	1428	if (expect_false (!ev_is_active (w)))
1245	return;	1429	return;
		1430
		1431	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1246		1432
1247	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1433	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1248	ev_stop (EV_A_ (W)w);	1434	ev_stop (EV_A_ (W)w);
1249		1435
1250	fd_change (EV_A_ w->fd);	1436	fd_change (EV_A_ w->fd);
1251	}	1437	}
1252		1438
1253	void	1439	void
1254	ev_timer_start (EV_P_ struct ev_timer *w)	1440	ev_timer_start (EV_P_ ev_timer *w)
1255	{	1441	{
1256	if (ev_is_active (w))	1442	if (expect_false (ev_is_active (w)))
1257	return;	1443	return;
1258		1444
1259	((WT)w)->at += mn_now;	1445	((WT)w)->at += mn_now;
1260		1446
1261	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1447	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1262		1448
1263	ev_start (EV_A_ (W)w, ++timercnt);	1449	ev_start (EV_A_ (W)w, ++timercnt);
1264	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1450	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1265	timers [timercnt - 1] = w;	1451	timers [timercnt - 1] = w;
1266	upheap ((WT *)timers, timercnt - 1);	1452	upheap ((WT *)timers, timercnt - 1);
1267		1453
1268	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1454	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1269	}	1455	}
1270		1456
1271	void	1457	void
1272	ev_timer_stop (EV_P_ struct ev_timer *w)	1458	ev_timer_stop (EV_P_ ev_timer *w)
1273	{	1459	{
1274	ev_clear_pending (EV_A_ (W)w);	1460	ev_clear_pending (EV_A_ (W)w);
1275	if (!ev_is_active (w))	1461	if (expect_false (!ev_is_active (w)))
1276	return;	1462	return;
1277		1463
1278	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1464	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1279		1465
1280	if (((W)w)->active < timercnt--)	1466	if (expect_true (((W)w)->active < timercnt--))
1281	{	1467	{
1282	timers [((W)w)->active - 1] = timers [timercnt];	1468	timers [((W)w)->active - 1] = timers [timercnt];
1283	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1469	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1284	}	1470	}
1285		1471
1286	((WT)w)->at = w->repeat;	1472	((WT)w)->at -= mn_now;
1287		1473
1288	ev_stop (EV_A_ (W)w);	1474	ev_stop (EV_A_ (W)w);
1289	}	1475	}
1290		1476
1291	void	1477	void
1292	ev_timer_again (EV_P_ struct ev_timer *w)	1478	ev_timer_again (EV_P_ ev_timer *w)
1293	{	1479	{
1294	if (ev_is_active (w))	1480	if (ev_is_active (w))
1295	{	1481	{
1296	if (w->repeat)	1482	if (w->repeat)
1297	{	1483	{
1298	((WT)w)->at = mn_now + w->repeat;	1484	((WT)w)->at = mn_now + w->repeat;
1299	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1485	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1300	}	1486	}
1301	else	1487	else
1302	ev_timer_stop (EV_A_ w);	1488	ev_timer_stop (EV_A_ w);
1303	}	1489	}
1304	else if (w->repeat)	1490	else if (w->repeat)
		1491	{
		1492	w->at = w->repeat;
1305	ev_timer_start (EV_A_ w);	1493	ev_timer_start (EV_A_ w);
		1494	}
1306	}	1495	}
1307		1496
		1497	#if EV_PERIODICS
1308	void	1498	void
1309	ev_periodic_start (EV_P_ struct ev_periodic *w)	1499	ev_periodic_start (EV_P_ ev_periodic *w)
1310	{	1500	{
1311	if (ev_is_active (w))	1501	if (expect_false (ev_is_active (w)))
1312	return;	1502	return;
1313		1503
		1504	if (w->reschedule_cb)
		1505	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1506	else if (w->interval)
		1507	{
1314	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1508	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1315
1316	/* this formula differs from the one in periodic_reify because we do not always round up */	1509	/* this formula differs from the one in periodic_reify because we do not always round up */
1317	if (w->interval)
1318	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1510	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1511	}
1319		1512
1320	ev_start (EV_A_ (W)w, ++periodiccnt);	1513	ev_start (EV_A_ (W)w, ++periodiccnt);
1321	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1514	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1322	periodics [periodiccnt - 1] = w;	1515	periodics [periodiccnt - 1] = w;
1323	upheap ((WT *)periodics, periodiccnt - 1);	1516	upheap ((WT *)periodics, periodiccnt - 1);
1324		1517
1325	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1518	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1326	}	1519	}
1327		1520
1328	void	1521	void
1329	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1522	ev_periodic_stop (EV_P_ ev_periodic *w)
1330	{	1523	{
1331	ev_clear_pending (EV_A_ (W)w);	1524	ev_clear_pending (EV_A_ (W)w);
1332	if (!ev_is_active (w))	1525	if (expect_false (!ev_is_active (w)))
1333	return;	1526	return;
1334		1527
1335	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1528	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1336		1529
1337	if (((W)w)->active < periodiccnt--)	1530	if (expect_true (((W)w)->active < periodiccnt--))
1338	{	1531	{
1339	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1532	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1340	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1533	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1341	}	1534	}
1342		1535
1343	ev_stop (EV_A_ (W)w);	1536	ev_stop (EV_A_ (W)w);
1344	}	1537	}
1345		1538
1346	void	1539	void
		1540	ev_periodic_again (EV_P_ ev_periodic *w)
		1541	{
		1542	/* TODO: use adjustheap and recalculation */
		1543	ev_periodic_stop (EV_A_ w);
		1544	ev_periodic_start (EV_A_ w);
		1545	}
		1546	#endif
		1547
		1548	void
1347	ev_idle_start (EV_P_ struct ev_idle *w)	1549	ev_idle_start (EV_P_ ev_idle *w)
1348	{	1550	{
1349	if (ev_is_active (w))	1551	if (expect_false (ev_is_active (w)))
1350	return;	1552	return;
1351		1553
1352	ev_start (EV_A_ (W)w, ++idlecnt);	1554	ev_start (EV_A_ (W)w, ++idlecnt);
1353	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));	1555	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1354	idles [idlecnt - 1] = w;	1556	idles [idlecnt - 1] = w;
1355	}	1557	}
1356		1558
1357	void	1559	void
1358	ev_idle_stop (EV_P_ struct ev_idle *w)	1560	ev_idle_stop (EV_P_ ev_idle *w)
1359	{	1561	{
1360	ev_clear_pending (EV_A_ (W)w);	1562	ev_clear_pending (EV_A_ (W)w);
1361	if (ev_is_active (w))	1563	if (expect_false (!ev_is_active (w)))
1362	return;	1564	return;
1363		1565
		1566	{
		1567	int active = ((W)w)->active;
1364	idles [((W)w)->active - 1] = idles [--idlecnt];	1568	idles [active - 1] = idles [--idlecnt];
		1569	((W)idles [active - 1])->active = active;
		1570	}
		1571
1365	ev_stop (EV_A_ (W)w);	1572	ev_stop (EV_A_ (W)w);
1366	}	1573	}
1367		1574
1368	void	1575	void
1369	ev_prepare_start (EV_P_ struct ev_prepare *w)	1576	ev_prepare_start (EV_P_ ev_prepare *w)
1370	{	1577	{
1371	if (ev_is_active (w))	1578	if (expect_false (ev_is_active (w)))
1372	return;	1579	return;
1373		1580
1374	ev_start (EV_A_ (W)w, ++preparecnt);	1581	ev_start (EV_A_ (W)w, ++preparecnt);
1375	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));	1582	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1376	prepares [preparecnt - 1] = w;	1583	prepares [preparecnt - 1] = w;
1377	}	1584	}
1378		1585
1379	void	1586	void
1380	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1587	ev_prepare_stop (EV_P_ ev_prepare *w)
1381	{	1588	{
1382	ev_clear_pending (EV_A_ (W)w);	1589	ev_clear_pending (EV_A_ (W)w);
1383	if (ev_is_active (w))	1590	if (expect_false (!ev_is_active (w)))
1384	return;	1591	return;
1385		1592
		1593	{
		1594	int active = ((W)w)->active;
1386	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1595	prepares [active - 1] = prepares [--preparecnt];
		1596	((W)prepares [active - 1])->active = active;
		1597	}
		1598
1387	ev_stop (EV_A_ (W)w);	1599	ev_stop (EV_A_ (W)w);
1388	}	1600	}
1389		1601
1390	void	1602	void
1391	ev_check_start (EV_P_ struct ev_check *w)	1603	ev_check_start (EV_P_ ev_check *w)
1392	{	1604	{
1393	if (ev_is_active (w))	1605	if (expect_false (ev_is_active (w)))
1394	return;	1606	return;
1395		1607
1396	ev_start (EV_A_ (W)w, ++checkcnt);	1608	ev_start (EV_A_ (W)w, ++checkcnt);
1397	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));	1609	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1398	checks [checkcnt - 1] = w;	1610	checks [checkcnt - 1] = w;
1399	}	1611	}
1400		1612
1401	void	1613	void
1402	ev_check_stop (EV_P_ struct ev_check *w)	1614	ev_check_stop (EV_P_ ev_check *w)
1403	{	1615	{
1404	ev_clear_pending (EV_A_ (W)w);	1616	ev_clear_pending (EV_A_ (W)w);
1405	if (ev_is_active (w))	1617	if (expect_false (!ev_is_active (w)))
1406	return;	1618	return;
1407		1619
		1620	{
		1621	int active = ((W)w)->active;
1408	checks [((W)w)->active - 1] = checks [--checkcnt];	1622	checks [active - 1] = checks [--checkcnt];
		1623	((W)checks [active - 1])->active = active;
		1624	}
		1625
1409	ev_stop (EV_A_ (W)w);	1626	ev_stop (EV_A_ (W)w);
1410	}	1627	}
1411		1628
1412	#ifndef SA_RESTART	1629	#ifndef SA_RESTART
1413	# define SA_RESTART 0	1630	# define SA_RESTART 0
1414	#endif	1631	#endif
1415		1632
1416	void	1633	void
1417	ev_signal_start (EV_P_ struct ev_signal *w)	1634	ev_signal_start (EV_P_ ev_signal *w)
1418	{	1635	{
1419	#if EV_MULTIPLICITY	1636	#if EV_MULTIPLICITY
1420	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1637	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1421	#endif	1638	#endif
1422	if (ev_is_active (w))	1639	if (expect_false (ev_is_active (w)))
1423	return;	1640	return;
1424		1641
1425	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1642	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1426		1643
1427	ev_start (EV_A_ (W)w, 1);	1644	ev_start (EV_A_ (W)w, 1);
1428	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1645	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1429	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1646	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1430		1647
1431	if (!((WL)w)->next)	1648	if (!((WL)w)->next)
1432	{	1649	{
1433	#if WIN32	1650	#if _WIN32
1434	signal (w->signum, sighandler);	1651	signal (w->signum, sighandler);
1435	#else	1652	#else
1436	struct sigaction sa;	1653	struct sigaction sa;
1437	sa.sa_handler = sighandler;	1654	sa.sa_handler = sighandler;
1438	sigfillset (&sa.sa_mask);	1655	sigfillset (&sa.sa_mask);
…		…
1441	#endif	1658	#endif
1442	}	1659	}
1443	}	1660	}
1444		1661
1445	void	1662	void
1446	ev_signal_stop (EV_P_ struct ev_signal *w)	1663	ev_signal_stop (EV_P_ ev_signal *w)
1447	{	1664	{
1448	ev_clear_pending (EV_A_ (W)w);	1665	ev_clear_pending (EV_A_ (W)w);
1449	if (!ev_is_active (w))	1666	if (expect_false (!ev_is_active (w)))
1450	return;	1667	return;
1451		1668
1452	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1669	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1453	ev_stop (EV_A_ (W)w);	1670	ev_stop (EV_A_ (W)w);
1454		1671
1455	if (!signals [w->signum - 1].head)	1672	if (!signals [w->signum - 1].head)
1456	signal (w->signum, SIG_DFL);	1673	signal (w->signum, SIG_DFL);
1457	}	1674	}
1458		1675
1459	void	1676	void
1460	ev_child_start (EV_P_ struct ev_child *w)	1677	ev_child_start (EV_P_ ev_child *w)
1461	{	1678	{
1462	#if EV_MULTIPLICITY	1679	#if EV_MULTIPLICITY
1463	assert (("child watchers are only supported in the default loop", loop == default_loop));	1680	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1464	#endif	1681	#endif
1465	if (ev_is_active (w))	1682	if (expect_false (ev_is_active (w)))
1466	return;	1683	return;
1467		1684
1468	ev_start (EV_A_ (W)w, 1);	1685	ev_start (EV_A_ (W)w, 1);
1469	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1686	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1470	}	1687	}
1471		1688
1472	void	1689	void
1473	ev_child_stop (EV_P_ struct ev_child *w)	1690	ev_child_stop (EV_P_ ev_child *w)
1474	{	1691	{
1475	ev_clear_pending (EV_A_ (W)w);	1692	ev_clear_pending (EV_A_ (W)w);
1476	if (ev_is_active (w))	1693	if (expect_false (!ev_is_active (w)))
1477	return;	1694	return;
1478		1695
1479	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1696	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1480	ev_stop (EV_A_ (W)w);	1697	ev_stop (EV_A_ (W)w);
1481	}	1698	}
1482		1699
		1700	#if EV_MULTIPLICITY
		1701	void
		1702	ev_embed_sweep (EV_P_ ev_embed *w)
		1703	{
		1704	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1705	}
		1706
		1707	static void
		1708	embed_cb (EV_P_ ev_io *io, int revents)
		1709	{
		1710	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
		1711
		1712	if (ev_cb (w))
		1713	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1714	else
		1715	ev_embed_sweep (loop, w);
		1716	}
		1717
		1718	void
		1719	ev_embed_start (EV_P_ ev_embed *w)
		1720	{
		1721	if (expect_false (ev_is_active (w)))
		1722	return;
		1723
		1724	{
		1725	struct ev_loop *loop = w->loop;
		1726	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1727	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1728	}
		1729
		1730	ev_set_priority (&w->io, ev_priority (w));
		1731	ev_io_start (EV_A_ &w->io);
		1732	ev_start (EV_A_ (W)w, 1);
		1733	}
		1734
		1735	void
		1736	ev_embed_stop (EV_P_ ev_embed *w)
		1737	{
		1738	ev_clear_pending (EV_A_ (W)w);
		1739	if (expect_false (!ev_is_active (w)))
		1740	return;
		1741
		1742	ev_io_stop (EV_A_ &w->io);
		1743	ev_stop (EV_A_ (W)w);
		1744	}
		1745	#endif
		1746
1483	/*****************************************************************************/	1747	/*****************************************************************************/
1484		1748
1485	struct ev_once	1749	struct ev_once
1486	{	1750	{
1487	struct ev_io io;	1751	ev_io io;
1488	struct ev_timer to;	1752	ev_timer to;
1489	void (cb)(int revents, void arg);	1753	void (cb)(int revents, void arg);
1490	void *arg;	1754	void *arg;
1491	};	1755	};
1492		1756
1493	static void	1757	static void
…		…
1502		1766
1503	cb (revents, arg);	1767	cb (revents, arg);
1504	}	1768	}
1505		1769
1506	static void	1770	static void
1507	once_cb_io (EV_P_ struct ev_io *w, int revents)	1771	once_cb_io (EV_P_ ev_io *w, int revents)
1508	{	1772	{
1509	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1773	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1510	}	1774	}
1511		1775
1512	static void	1776	static void
1513	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1777	once_cb_to (EV_P_ ev_timer *w, int revents)
1514	{	1778	{
1515	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1779	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1516	}	1780	}
1517		1781
1518	void	1782	void
1519	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1783	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1520	{	1784	{
1521	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));	1785	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1522		1786
1523	if (!once)	1787	if (expect_false (!once))
		1788	{
1524	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1789	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1525	else	1790	return;
1526	{	1791	}
		1792
1527	once->cb = cb;	1793	once->cb = cb;
1528	once->arg = arg;	1794	once->arg = arg;
1529		1795
1530	ev_watcher_init (&once->io, once_cb_io);	1796	ev_init (&once->io, once_cb_io);
1531	if (fd >= 0)	1797	if (fd >= 0)
1532	{	1798	{
1533	ev_io_set (&once->io, fd, events);	1799	ev_io_set (&once->io, fd, events);
1534	ev_io_start (EV_A_ &once->io);	1800	ev_io_start (EV_A_ &once->io);
1535	}	1801	}
1536		1802
1537	ev_watcher_init (&once->to, once_cb_to);	1803	ev_init (&once->to, once_cb_to);
1538	if (timeout >= 0.)	1804	if (timeout >= 0.)
1539	{	1805	{
1540	ev_timer_set (&once->to, timeout, 0.);	1806	ev_timer_set (&once->to, timeout, 0.);
1541	ev_timer_start (EV_A_ &once->to);	1807	ev_timer_start (EV_A_ &once->to);
1542	}
1543	}	1808	}
1544	}	1809	}
1545		1810
		1811	#ifdef __cplusplus
		1812	}
		1813	#endif
		1814

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Comparing libev/ev.c (file contents): Revision 1.76 by root, Wed Nov 7 18:47:26 2007 UTC vs. Revision 1.139 by root, Sun Nov 25 09:24:37 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.76 by root, Wed Nov 7 18:47:26 2007 UTC vs.
Revision 1.139 by root, Sun Nov 25 09:24:37 2007 UTC