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Comparing libev/ev.c (file contents):
Revision 1.72 by root, Tue Nov 6 16:09:37 2007 UTC vs.
Revision 1.134 by root, Fri Nov 23 19:13:33 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 struct ev_watcher *W;
148	typedef struct ev_watcher_list *WL;	208	typedef struct ev_watcher_list *WL;
149	typedef struct ev_watcher_time *WT;	209	typedef struct 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
153	#if WIN32	213	#ifdef _WIN32
154	/* note: the comment below could not be substantiated, but what would I care */	214	# include "ev_win32.c"
155	/* MSDN says this is required to handle SIGFPE */
156	volatile double SIGFPE_REQ = 0.0f;
157
158	static int
159	ev_socketpair_tcp (int filedes [2])
160	{
161	struct sockaddr_in addr = { 0 };
162	int addr_size = sizeof (addr);
163	SOCKET listener;
164	SOCKET sock [2] = { -1, -1 };
165
166	if ((listener = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
167	return -1;
168
169	addr.sin_family = AF_INET;
170	addr.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
171	addr.sin_port = 0;
172
173	if (bind (listener, (struct sockaddr *)&addr, addr_size))
174	goto fail;
175
176	if (getsockname(listener, (struct sockaddr *)&addr, &addr_size))
177	goto fail;
178
179	if (listen (listener, 1))
180	goto fail;
181
182	if ((sock [0] = socket (AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
183	goto fail;
184
185	if (connect (sock[0], (struct sockaddr *)&addr, addr_size))
186	goto fail;
187
188	if ((sock[1] = accept (listener, 0, 0)) < 0)
189	goto fail;
190
191	closesocket (listener);
192
193	filedes [0] = sock [0];
194	filedes [1] = sock [1];
195
196	return 0;
197
198	fail:
199	closesocket (listener);
200
201	if (sock [0] != INVALID_SOCKET) closesocket (sock [0]);
202	if (sock [1] != INVALID_SOCKET) closesocket (sock [1]);
203
204	return -1;
205	}
206
207	# define ev_pipe(filedes) ev_socketpair_tcp (filedes)
208	#else
209	# define ev_pipe(filedes) pipe (filedes)
210	#endif	215	#endif
211		216
212	/*****************************************************************************/	217	/*****************************************************************************/
213		218
214	static void (*syserr_cb)(const char *msg);	219	static void (*syserr_cb)(const char *msg);
…		…
262	typedef struct	267	typedef struct
263	{	268	{
264	WL head;	269	WL head;
265	unsigned char events;	270	unsigned char events;
266	unsigned char reify;	271	unsigned char reify;
		272	#if EV_SELECT_IS_WINSOCKET
		273	SOCKET handle;
		274	#endif
267	} ANFD;	275	} ANFD;
268		276
269	typedef struct	277	typedef struct
270	{	278	{
271	W w;	279	W w;
272	int events;	280	int events;
273	} ANPENDING;	281	} ANPENDING;
274		282
275	#if EV_MULTIPLICITY	283	#if EV_MULTIPLICITY
276		284
277	struct ev_loop	285	struct ev_loop
278	{	286	{
		287	ev_tstamp ev_rt_now;
		288	#define ev_rt_now ((loop)->ev_rt_now)
279	# define VAR(name,decl) decl;	289	#define VAR(name,decl) decl;
280	# include "ev_vars.h"	290	#include "ev_vars.h"
281	};
282	# undef VAR	291	#undef VAR
		292	};
283	# 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;
284		297
285	#else	298	#else
286		299
		300	ev_tstamp ev_rt_now;
287	# define VAR(name,decl) static decl;	301	#define VAR(name,decl) static decl;
288	# include "ev_vars.h"	302	#include "ev_vars.h"
289	# undef VAR	303	#undef VAR
		304
		305	static int ev_default_loop_ptr;
290		306
291	#endif	307	#endif
292		308
293	/*****************************************************************************/	309	/*****************************************************************************/
294		310
295	inline ev_tstamp	311	ev_tstamp
296	ev_time (void)	312	ev_time (void)
297	{	313	{
298	#if EV_USE_REALTIME	314	#if EV_USE_REALTIME
299	struct timespec ts;	315	struct timespec ts;
300	clock_gettime (CLOCK_REALTIME, &ts);	316	clock_gettime (CLOCK_REALTIME, &ts);
…		…
319	#endif	335	#endif
320		336
321	return ev_time ();	337	return ev_time ();
322	}	338	}
323		339
		340	#if EV_MULTIPLICITY
324	ev_tstamp	341	ev_tstamp
325	ev_now (EV_P)	342	ev_now (EV_P)
326	{	343	{
327	return rt_now;	344	return ev_rt_now;
328	}	345	}
		346	#endif
329		347
330	#define array_roundsize(base,n) ((n) | 4 & ~3)	348	#define array_roundsize(type,n) (((n) | 4) & ~3)
331		349
332	#define array_needsize(base,cur,cnt,init) \	350	#define array_needsize(type,base,cur,cnt,init) \
333	if (expect_false ((cnt) > cur)) \	351	if (expect_false ((cnt) > cur)) \
334	{ \	352	{ \
335	int newcnt = cur; \	353	int newcnt = cur; \
336	do \	354	do \
337	{ \	355	{ \
338	newcnt = array_roundsize (base, newcnt << 1); \	356	newcnt = array_roundsize (type, newcnt << 1); \
339	} \	357	} \
340	while ((cnt) > newcnt); \	358	while ((cnt) > newcnt); \
341	\	359	\
342	base = ev_realloc (base, sizeof (*base) * (newcnt)); \	360	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
343	init (base + cur, newcnt - cur); \	361	init (base + cur, newcnt - cur); \
344	cur = newcnt; \	362	cur = newcnt; \
345	}	363	}
346		364
347	#define array_slim(stem) \	365	#define array_slim(type,stem) \
348	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	366	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
349	{ \	367	{ \
350	stem ## max = array_roundsize (stem ## cnt >> 1); \	368	stem ## max = array_roundsize (stem ## cnt >> 1); \
351	base = ev_realloc (base, sizeof (*base) * (stem ## max)); \	369	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
352	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	370	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
353	}	371	}
354
355	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
356	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
357	#define array_free_microshit(stem) \
358	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
359		372
360	#define array_free(stem, idx) \	373	#define array_free(stem, idx) \
361	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;
362		375
363	/*****************************************************************************/	376	/*****************************************************************************/
…		…
373		386
374	++base;	387	++base;
375	}	388	}
376	}	389	}
377		390
378	static void	391	void
379	event (EV_P_ W w, int events)	392	ev_feed_event (EV_P_ void *w, int revents)
380	{	393	{
381	if (w->pending)	394	W w_ = (W)w;
		395
		396	if (expect_false (w_->pending))
382	{	397	{
383	pendings [ABSPRI (w)][w->pending - 1].events |= events;	398	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
384	return;	399	return;
385	}	400	}
386		401
		402	if (expect_false (!w_->cb))
		403	return;
		404
387	w->pending = ++pendingcnt [ABSPRI (w)];	405	w_->pending = ++pendingcnt [ABSPRI (w_)];
388	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));	406	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
389	pendings [ABSPRI (w)][w->pending - 1].w = w;	407	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
390	pendings [ABSPRI (w)][w->pending - 1].events = events;	408	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
391	}	409	}
392		410
393	static void	411	static void
394	queue_events (EV_P_ W *events, int eventcnt, int type)	412	queue_events (EV_P_ W *events, int eventcnt, int type)
395	{	413	{
396	int i;	414	int i;
397		415
398	for (i = 0; i < eventcnt; ++i)	416	for (i = 0; i < eventcnt; ++i)
399	event (EV_A_ events [i], type);	417	ev_feed_event (EV_A_ events [i], type);
400	}	418	}
401		419
402	static void	420	inline void
403	fd_event (EV_P_ int fd, int events)	421	fd_event (EV_P_ int fd, int revents)
404	{	422	{
405	ANFD *anfd = anfds + fd;	423	ANFD *anfd = anfds + fd;
406	struct ev_io *w;	424	struct ev_io *w;
407		425
408	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	426	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
409	{	427	{
410	int ev = w->events & events;	428	int ev = w->events & revents;
411		429
412	if (ev)	430	if (ev)
413	event (EV_A_ (W)w, ev);	431	ev_feed_event (EV_A_ (W)w, ev);
414	}	432	}
		433	}
		434
		435	void
		436	ev_feed_fd_event (EV_P_ int fd, int revents)
		437	{
		438	fd_event (EV_A_ fd, revents);
415	}	439	}
416		440
417	/*****************************************************************************/	441	/*****************************************************************************/
418		442
419	static void	443	inline void
420	fd_reify (EV_P)	444	fd_reify (EV_P)
421	{	445	{
422	int i;	446	int i;
423		447
424	for (i = 0; i < fdchangecnt; ++i)	448	for (i = 0; i < fdchangecnt; ++i)
…		…
430	int events = 0;	454	int events = 0;
431		455
432	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	456	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
433	events |= w->events;	457	events |= w->events;
434		458
		459	#if EV_SELECT_IS_WINSOCKET
		460	if (events)
		461	{
		462	unsigned long argp;
		463	anfd->handle = _get_osfhandle (fd);
		464	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		465	}
		466	#endif
		467
435	anfd->reify = 0;	468	anfd->reify = 0;
436		469
437	method_modify (EV_A_ fd, anfd->events, events);	470	backend_modify (EV_A_ fd, anfd->events, events);
438	anfd->events = events;	471	anfd->events = events;
439	}	472	}
440		473
441	fdchangecnt = 0;	474	fdchangecnt = 0;
442	}	475	}
443		476
444	static void	477	static void
445	fd_change (EV_P_ int fd)	478	fd_change (EV_P_ int fd)
446	{	479	{
447	if (anfds [fd].reify)	480	if (expect_false (anfds [fd].reify))
448	return;	481	return;
449		482
450	anfds [fd].reify = 1;	483	anfds [fd].reify = 1;
451		484
452	++fdchangecnt;	485	++fdchangecnt;
453	array_needsize (fdchanges, fdchangemax, fdchangecnt, (void));	486	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
454	fdchanges [fdchangecnt - 1] = fd;	487	fdchanges [fdchangecnt - 1] = fd;
455	}	488	}
456		489
457	static void	490	static void
458	fd_kill (EV_P_ int fd)	491	fd_kill (EV_P_ int fd)
…		…
460	struct ev_io *w;	493	struct ev_io *w;
461		494
462	while ((w = (struct ev_io *)anfds [fd].head))	495	while ((w = (struct ev_io *)anfds [fd].head))
463	{	496	{
464	ev_io_stop (EV_A_ w);	497	ev_io_stop (EV_A_ w);
465	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	498	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
466	}	499	}
467	}	500	}
468		501
469	static int	502	inline int
470	fd_valid (int fd)	503	fd_valid (int fd)
471	{	504	{
472	#ifdef WIN32	505	#ifdef _WIN32
473	return !!win32_get_osfhandle (fd);	506	return _get_osfhandle (fd) != -1;
474	#else	507	#else
475	return fcntl (fd, F_GETFD) != -1;	508	return fcntl (fd, F_GETFD) != -1;
476	#endif	509	#endif
477	}	510	}
478		511
…		…
500	fd_kill (EV_A_ fd);	533	fd_kill (EV_A_ fd);
501	return;	534	return;
502	}	535	}
503	}	536	}
504		537
505	/* usually called after fork if method needs to re-arm all fds from scratch */	538	/* usually called after fork if backend needs to re-arm all fds from scratch */
506	static void	539	static void
507	fd_rearm_all (EV_P)	540	fd_rearm_all (EV_P)
508	{	541	{
509	int fd;	542	int fd;
510		543
…		…
558		591
559	heap [k] = w;	592	heap [k] = w;
560	((W)heap [k])->active = k + 1;	593	((W)heap [k])->active = k + 1;
561	}	594	}
562		595
		596	inline void
		597	adjustheap (WT *heap, int N, int k)
		598	{
		599	upheap (heap, k);
		600	downheap (heap, N, k);
		601	}
		602
563	/*****************************************************************************/	603	/*****************************************************************************/
564		604
565	typedef struct	605	typedef struct
566	{	606	{
567	WL head;	607	WL head;
…		…
588	}	628	}
589		629
590	static void	630	static void
591	sighandler (int signum)	631	sighandler (int signum)
592	{	632	{
593	#if WIN32	633	#if _WIN32
594	signal (signum, sighandler);	634	signal (signum, sighandler);
595	#endif	635	#endif
596		636
597	signals [signum - 1].gotsig = 1;	637	signals [signum - 1].gotsig = 1;
598		638
…		…
603	write (sigpipe [1], &signum, 1);	643	write (sigpipe [1], &signum, 1);
604	errno = old_errno;	644	errno = old_errno;
605	}	645	}
606	}	646	}
607		647
		648	void
		649	ev_feed_signal_event (EV_P_ int signum)
		650	{
		651	WL w;
		652
		653	#if EV_MULTIPLICITY
		654	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		655	#endif
		656
		657	--signum;
		658
		659	if (signum < 0 || signum >= signalmax)
		660	return;
		661
		662	signals [signum].gotsig = 0;
		663
		664	for (w = signals [signum].head; w; w = w->next)
		665	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		666	}
		667
608	static void	668	static void
609	sigcb (EV_P_ struct ev_io *iow, int revents)	669	sigcb (EV_P_ struct ev_io *iow, int revents)
610	{	670	{
611	WL w;
612	int signum;	671	int signum;
613		672
614	read (sigpipe [0], &revents, 1);	673	read (sigpipe [0], &revents, 1);
615	gotsig = 0;	674	gotsig = 0;
616		675
617	for (signum = signalmax; signum--; )	676	for (signum = signalmax; signum--; )
618	if (signals [signum].gotsig)	677	if (signals [signum].gotsig)
619	{	678	ev_feed_signal_event (EV_A_ signum + 1);
620	signals [signum].gotsig = 0;	679	}
621		680
622	for (w = signals [signum].head; w; w = w->next)	681	static void
623	event (EV_A_ (W)w, EV_SIGNAL);	682	fd_intern (int fd)
624	}	683	{
		684	#ifdef _WIN32
		685	int arg = 1;
		686	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		687	#else
		688	fcntl (fd, F_SETFD, FD_CLOEXEC);
		689	fcntl (fd, F_SETFL, O_NONBLOCK);
		690	#endif
625	}	691	}
626		692
627	static void	693	static void
628	siginit (EV_P)	694	siginit (EV_P)
629	{	695	{
630	#ifndef WIN32	696	fd_intern (sigpipe [0]);
631	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	697	fd_intern (sigpipe [1]);
632	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
633
634	/* rather than sort out wether we really need nb, set it */
635	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
636	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
637	#endif
638		698
639	ev_io_set (&sigev, sigpipe [0], EV_READ);	699	ev_io_set (&sigev, sigpipe [0], EV_READ);
640	ev_io_start (EV_A_ &sigev);	700	ev_io_start (EV_A_ &sigev);
641	ev_unref (EV_A); /* child watcher should not keep loop alive */	701	ev_unref (EV_A); /* child watcher should not keep loop alive */
642	}	702	}
643		703
644	/*****************************************************************************/	704	/*****************************************************************************/
645		705
646	static struct ev_child *childs [PID_HASHSIZE];	706	static struct ev_child *childs [PID_HASHSIZE];
647		707
648	#ifndef WIN32	708	#ifndef _WIN32
649		709
650	static struct ev_signal childev;	710	static struct ev_signal childev;
651		711
652	#ifndef WCONTINUED	712	#ifndef WCONTINUED
653	# define WCONTINUED 0	713	# define WCONTINUED 0
…		…
662	if (w->pid == pid || !w->pid)	722	if (w->pid == pid || !w->pid)
663	{	723	{
664	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	724	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
665	w->rpid = pid;	725	w->rpid = pid;
666	w->rstatus = status;	726	w->rstatus = status;
667	event (EV_A_ (W)w, EV_CHILD);	727	ev_feed_event (EV_A_ (W)w, EV_CHILD);
668	}	728	}
669	}	729	}
670		730
671	static void	731	static void
672	childcb (EV_P_ struct ev_signal *sw, int revents)	732	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
674	int pid, status;	734	int pid, status;
675		735
676	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	736	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
677	{	737	{
678	/* make sure we are called again until all childs have been reaped */	738	/* make sure we are called again until all childs have been reaped */
		739	/* we need to do it this way so that the callback gets called before we continue */
679	event (EV_A_ (W)sw, EV_SIGNAL);	740	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
680		741
681	child_reap (EV_A_ sw, pid, pid, status);	742	child_reap (EV_A_ sw, pid, pid, status);
682	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	743	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
683	}	744	}
684	}	745	}
685		746
686	#endif	747	#endif
687		748
688	/*****************************************************************************/	749	/*****************************************************************************/
689		750
		751	#if EV_USE_PORT
		752	# include "ev_port.c"
		753	#endif
690	#if EV_USE_KQUEUE	754	#if EV_USE_KQUEUE
691	# include "ev_kqueue.c"	755	# include "ev_kqueue.c"
692	#endif	756	#endif
693	#if EV_USE_EPOLL	757	#if EV_USE_EPOLL
694	# include "ev_epoll.c"	758	# include "ev_epoll.c"
…		…
714		778
715	/* return true if we are running with elevated privileges and should ignore env variables */	779	/* return true if we are running with elevated privileges and should ignore env variables */
716	static int	780	static int
717	enable_secure (void)	781	enable_secure (void)
718	{	782	{
719	#ifdef WIN32	783	#ifdef _WIN32
720	return 0;	784	return 0;
721	#else	785	#else
722	return getuid () != geteuid ()	786	return getuid () != geteuid ()
723	|| getgid () != getegid ();	787	|| getgid () != getegid ();
724	#endif	788	#endif
725	}	789	}
726		790
727	int	791	unsigned int
728	ev_method (EV_P)	792	ev_supported_backends (void)
729	{	793	{
730	return method;	794	unsigned int flags = 0;
731	}
732		795
733	static void	796	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
734	loop_init (EV_P_ int methods)	797	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		798	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		799	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		800	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		801
		802	return flags;
		803	}
		804
		805	unsigned int
		806	ev_recommended_backends (void)
735	{	807	{
736	if (!method)	808	unsigned int flags = ev_supported_backends ();
		809
		810	#ifndef __NetBSD__
		811	/* kqueue is borked on everything but netbsd apparently */
		812	/* it usually doesn't work correctly on anything but sockets and pipes */
		813	flags &= ~EVBACKEND_KQUEUE;
		814	#endif
		815	#ifdef __APPLE__
		816	// flags &= ~EVBACKEND_KQUEUE; for documentation
		817	flags &= ~EVBACKEND_POLL;
		818	#endif
		819
		820	return flags;
		821	}
		822
		823	unsigned int
		824	ev_embeddable_backends (void)
		825	{
		826	return EVBACKEND_EPOLL
		827	| EVBACKEND_KQUEUE
		828	| EVBACKEND_PORT;
		829	}
		830
		831	unsigned int
		832	ev_backend (EV_P)
		833	{
		834	return backend;
		835	}
		836
		837	static void
		838	loop_init (EV_P_ unsigned int flags)
		839	{
		840	if (!backend)
737	{	841	{
738	#if EV_USE_MONOTONIC	842	#if EV_USE_MONOTONIC
739	{	843	{
740	struct timespec ts;	844	struct timespec ts;
741	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	845	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
742	have_monotonic = 1;	846	have_monotonic = 1;
743	}	847	}
744	#endif	848	#endif
745		849
746	rt_now = ev_time ();	850	ev_rt_now = ev_time ();
747	mn_now = get_clock ();	851	mn_now = get_clock ();
748	now_floor = mn_now;	852	now_floor = mn_now;
749	rtmn_diff = rt_now - mn_now;	853	rtmn_diff = ev_rt_now - mn_now;
750		854
751	if (methods == EVMETHOD_AUTO)	855	if (!(flags & EVFLAG_NOENV)
752	if (!enable_secure () && getenv ("LIBEV_METHODS"))	856	&& !enable_secure ()
		857	&& getenv ("LIBEV_FLAGS"))
753	methods = atoi (getenv ("LIBEV_METHODS"));	858	flags = atoi (getenv ("LIBEV_FLAGS"));
754	else
755	methods = EVMETHOD_ANY;
756		859
757	method = 0;	860	if (!(flags & 0x0000ffffUL))
758	#if EV_USE_WIN32	861	flags |= ev_recommended_backends ();
759	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	862
		863	backend = 0;
		864	#if EV_USE_PORT
		865	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
760	#endif	866	#endif
761	#if EV_USE_KQUEUE	867	#if EV_USE_KQUEUE
762	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	868	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
763	#endif	869	#endif
764	#if EV_USE_EPOLL	870	#if EV_USE_EPOLL
765	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	871	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
766	#endif	872	#endif
767	#if EV_USE_POLL	873	#if EV_USE_POLL
768	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	874	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
769	#endif	875	#endif
770	#if EV_USE_SELECT	876	#if EV_USE_SELECT
771	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	877	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
772	#endif	878	#endif
773		879
774	ev_watcher_init (&sigev, sigcb);	880	ev_init (&sigev, sigcb);
775	ev_set_priority (&sigev, EV_MAXPRI);	881	ev_set_priority (&sigev, EV_MAXPRI);
776	}	882	}
777	}	883	}
778		884
779	void	885	static void
780	loop_destroy (EV_P)	886	loop_destroy (EV_P)
781	{	887	{
782	int i;	888	int i;
783		889
784	#if EV_USE_WIN32	890	#if EV_USE_PORT
785	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	891	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
786	#endif	892	#endif
787	#if EV_USE_KQUEUE	893	#if EV_USE_KQUEUE
788	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	894	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
789	#endif	895	#endif
790	#if EV_USE_EPOLL	896	#if EV_USE_EPOLL
791	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	897	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
792	#endif	898	#endif
793	#if EV_USE_POLL	899	#if EV_USE_POLL
794	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	900	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
795	#endif	901	#endif
796	#if EV_USE_SELECT	902	#if EV_USE_SELECT
797	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	903	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
798	#endif	904	#endif
799		905
800	for (i = NUMPRI; i--; )	906	for (i = NUMPRI; i--; )
801	array_free (pending, [i]);	907	array_free (pending, [i]);
802		908
803	/* have to use the microsoft-never-gets-it-right macro */	909	/* have to use the microsoft-never-gets-it-right macro */
804	array_free_microshit (fdchange);	910	array_free (fdchange, EMPTY0);
805	array_free_microshit (timer);	911	array_free (timer, EMPTY0);
806	array_free_microshit (periodic);	912	#if EV_PERIODICS
807	array_free_microshit (idle);	913	array_free (periodic, EMPTY0);
808	array_free_microshit (prepare);	914	#endif
809	array_free_microshit (check);	915	array_free (idle, EMPTY0);
		916	array_free (prepare, EMPTY0);
		917	array_free (check, EMPTY0);
810		918
811	method = 0;	919	backend = 0;
812	}	920	}
813		921
814	static void	922	static void
815	loop_fork (EV_P)	923	loop_fork (EV_P)
816	{	924	{
		925	#if EV_USE_PORT
		926	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		927	#endif
		928	#if EV_USE_KQUEUE
		929	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		930	#endif
817	#if EV_USE_EPOLL	931	#if EV_USE_EPOLL
818	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	932	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
819	#endif
820	#if EV_USE_KQUEUE
821	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
822	#endif	933	#endif
823		934
824	if (ev_is_active (&sigev))	935	if (ev_is_active (&sigev))
825	{	936	{
826	/* default loop */	937	/* default loop */
…		…
828	ev_ref (EV_A);	939	ev_ref (EV_A);
829	ev_io_stop (EV_A_ &sigev);	940	ev_io_stop (EV_A_ &sigev);
830	close (sigpipe [0]);	941	close (sigpipe [0]);
831	close (sigpipe [1]);	942	close (sigpipe [1]);
832		943
833	while (ev_pipe (sigpipe))	944	while (pipe (sigpipe))
834	syserr ("(libev) error creating pipe");	945	syserr ("(libev) error creating pipe");
835		946
836	siginit (EV_A);	947	siginit (EV_A);
837	}	948	}
838		949
839	postfork = 0;	950	postfork = 0;
840	}	951	}
841		952
842	#if EV_MULTIPLICITY	953	#if EV_MULTIPLICITY
843	struct ev_loop *	954	struct ev_loop *
844	ev_loop_new (int methods)	955	ev_loop_new (unsigned int flags)
845	{	956	{
846	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	957	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
847		958
848	memset (loop, 0, sizeof (struct ev_loop));	959	memset (loop, 0, sizeof (struct ev_loop));
849		960
850	loop_init (EV_A_ methods);	961	loop_init (EV_A_ flags);
851		962
852	if (ev_method (EV_A))	963	if (ev_backend (EV_A))
853	return loop;	964	return loop;
854		965
855	return 0;	966	return 0;
856	}	967	}
857		968
…		…
869	}	980	}
870		981
871	#endif	982	#endif
872		983
873	#if EV_MULTIPLICITY	984	#if EV_MULTIPLICITY
874	struct ev_loop default_loop_struct;
875	static struct ev_loop *default_loop;
876
877	struct ev_loop *	985	struct ev_loop *
		986	ev_default_loop_init (unsigned int flags)
878	#else	987	#else
879	static int default_loop;
880
881	int	988	int
		989	ev_default_loop (unsigned int flags)
882	#endif	990	#endif
883	ev_default_loop (int methods)
884	{	991	{
885	if (sigpipe [0] == sigpipe [1])	992	if (sigpipe [0] == sigpipe [1])
886	if (ev_pipe (sigpipe))	993	if (pipe (sigpipe))
887	return 0;	994	return 0;
888		995
889	if (!default_loop)	996	if (!ev_default_loop_ptr)
890	{	997	{
891	#if EV_MULTIPLICITY	998	#if EV_MULTIPLICITY
892	struct ev_loop *loop = default_loop = &default_loop_struct;	999	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
893	#else	1000	#else
894	default_loop = 1;	1001	ev_default_loop_ptr = 1;
895	#endif	1002	#endif
896		1003
897	loop_init (EV_A_ methods);	1004	loop_init (EV_A_ flags);
898		1005
899	if (ev_method (EV_A))	1006	if (ev_backend (EV_A))
900	{	1007	{
901	siginit (EV_A);	1008	siginit (EV_A);
902		1009
903	#ifndef WIN32	1010	#ifndef _WIN32
904	ev_signal_init (&childev, childcb, SIGCHLD);	1011	ev_signal_init (&childev, childcb, SIGCHLD);
905	ev_set_priority (&childev, EV_MAXPRI);	1012	ev_set_priority (&childev, EV_MAXPRI);
906	ev_signal_start (EV_A_ &childev);	1013	ev_signal_start (EV_A_ &childev);
907	ev_unref (EV_A); /* child watcher should not keep loop alive */	1014	ev_unref (EV_A); /* child watcher should not keep loop alive */
908	#endif	1015	#endif
909	}	1016	}
910	else	1017	else
911	default_loop = 0;	1018	ev_default_loop_ptr = 0;
912	}	1019	}
913		1020
914	return default_loop;	1021	return ev_default_loop_ptr;
915	}	1022	}
916		1023
917	void	1024	void
918	ev_default_destroy (void)	1025	ev_default_destroy (void)
919	{	1026	{
920	#if EV_MULTIPLICITY	1027	#if EV_MULTIPLICITY
921	struct ev_loop *loop = default_loop;	1028	struct ev_loop *loop = ev_default_loop_ptr;
922	#endif	1029	#endif
923		1030
924	#ifndef WIN32	1031	#ifndef _WIN32
925	ev_ref (EV_A); /* child watcher */	1032	ev_ref (EV_A); /* child watcher */
926	ev_signal_stop (EV_A_ &childev);	1033	ev_signal_stop (EV_A_ &childev);
927	#endif	1034	#endif
928		1035
929	ev_ref (EV_A); /* signal watcher */	1036	ev_ref (EV_A); /* signal watcher */
…		…
937		1044
938	void	1045	void
939	ev_default_fork (void)	1046	ev_default_fork (void)
940	{	1047	{
941	#if EV_MULTIPLICITY	1048	#if EV_MULTIPLICITY
942	struct ev_loop *loop = default_loop;	1049	struct ev_loop *loop = ev_default_loop_ptr;
943	#endif	1050	#endif
944		1051
945	if (method)	1052	if (backend)
946	postfork = 1;	1053	postfork = 1;
947	}	1054	}
948		1055
949	/*****************************************************************************/	1056	/*****************************************************************************/
950		1057
951	static void	1058	static int
		1059	any_pending (EV_P)
		1060	{
		1061	int pri;
		1062
		1063	for (pri = NUMPRI; pri--; )
		1064	if (pendingcnt [pri])
		1065	return 1;
		1066
		1067	return 0;
		1068	}
		1069
		1070	inline void
952	call_pending (EV_P)	1071	call_pending (EV_P)
953	{	1072	{
954	int pri;	1073	int pri;
955		1074
956	for (pri = NUMPRI; pri--; )	1075	for (pri = NUMPRI; pri--; )
957	while (pendingcnt [pri])	1076	while (pendingcnt [pri])
958	{	1077	{
959	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1078	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
960		1079
961	if (p->w)	1080	if (expect_true (p->w))
962	{	1081	{
963	p->w->pending = 0;	1082	p->w->pending = 0;
964	p->w->cb (EV_A_ p->w, p->events);	1083	EV_CB_INVOKE (p->w, p->events);
965	}	1084	}
966	}	1085	}
967	}	1086	}
968		1087
969	static void	1088	inline void
970	timers_reify (EV_P)	1089	timers_reify (EV_P)
971	{	1090	{
972	while (timercnt && ((WT)timers [0])->at <= mn_now)	1091	while (timercnt && ((WT)timers [0])->at <= mn_now)
973	{	1092	{
974	struct ev_timer *w = timers [0];	1093	struct ev_timer *w = timers [0];
…		…
977		1096
978	/* first reschedule or stop timer */	1097	/* first reschedule or stop timer */
979	if (w->repeat)	1098	if (w->repeat)
980	{	1099	{
981	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1100	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1101
982	((WT)w)->at = mn_now + w->repeat;	1102	((WT)w)->at += w->repeat;
		1103	if (((WT)w)->at < mn_now)
		1104	((WT)w)->at = mn_now;
		1105
983	downheap ((WT *)timers, timercnt, 0);	1106	downheap ((WT *)timers, timercnt, 0);
984	}	1107	}
985	else	1108	else
986	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1109	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
987		1110
988	event (EV_A_ (W)w, EV_TIMEOUT);	1111	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
989	}	1112	}
990	}	1113	}
991		1114
992	static void	1115	#if EV_PERIODICS
		1116	inline void
993	periodics_reify (EV_P)	1117	periodics_reify (EV_P)
994	{	1118	{
995	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1119	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
996	{	1120	{
997	struct ev_periodic *w = periodics [0];	1121	struct ev_periodic *w = periodics [0];
998		1122
999	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1123	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
1000		1124
1001	/* first reschedule or stop timer */	1125	/* first reschedule or stop timer */
1002	if (w->interval)	1126	if (w->reschedule_cb)
1003	{	1127	{
		1128	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1129	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1130	downheap ((WT *)periodics, periodiccnt, 0);
		1131	}
		1132	else if (w->interval)
		1133	{
1004	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1134	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
1005	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1135	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1006	downheap ((WT *)periodics, periodiccnt, 0);	1136	downheap ((WT *)periodics, periodiccnt, 0);
1007	}	1137	}
1008	else	1138	else
1009	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1139	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1010		1140
1011	event (EV_A_ (W)w, EV_PERIODIC);	1141	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1012	}	1142	}
1013	}	1143	}
1014		1144
1015	static void	1145	static void
1016	periodics_reschedule (EV_P)	1146	periodics_reschedule (EV_P)
…		…
1020	/* adjust periodics after time jump */	1150	/* adjust periodics after time jump */
1021	for (i = 0; i < periodiccnt; ++i)	1151	for (i = 0; i < periodiccnt; ++i)
1022	{	1152	{
1023	struct ev_periodic *w = periodics [i];	1153	struct ev_periodic *w = periodics [i];
1024		1154
		1155	if (w->reschedule_cb)
		1156	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1025	if (w->interval)	1157	else if (w->interval)
1026	{
1027	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1158	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1028
1029	if (fabs (diff) >= 1e-4)
1030	{
1031	ev_periodic_stop (EV_A_ w);
1032	ev_periodic_start (EV_A_ w);
1033
1034	i = 0; /* restart loop, inefficient, but time jumps should be rare */
1035	}
1036	}
1037	}	1159	}
		1160
		1161	/* now rebuild the heap */
		1162	for (i = periodiccnt >> 1; i--; )
		1163	downheap ((WT *)periodics, periodiccnt, i);
1038	}	1164	}
		1165	#endif
1039		1166
1040	inline int	1167	inline int
1041	time_update_monotonic (EV_P)	1168	time_update_monotonic (EV_P)
1042	{	1169	{
1043	mn_now = get_clock ();	1170	mn_now = get_clock ();
1044		1171
1045	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1172	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1046	{	1173	{
1047	rt_now = rtmn_diff + mn_now;	1174	ev_rt_now = rtmn_diff + mn_now;
1048	return 0;	1175	return 0;
1049	}	1176	}
1050	else	1177	else
1051	{	1178	{
1052	now_floor = mn_now;	1179	now_floor = mn_now;
1053	rt_now = ev_time ();	1180	ev_rt_now = ev_time ();
1054	return 1;	1181	return 1;
1055	}	1182	}
1056	}	1183	}
1057		1184
1058	static void	1185	inline void
1059	time_update (EV_P)	1186	time_update (EV_P)
1060	{	1187	{
1061	int i;	1188	int i;
1062		1189
1063	#if EV_USE_MONOTONIC	1190	#if EV_USE_MONOTONIC
…		…
1067	{	1194	{
1068	ev_tstamp odiff = rtmn_diff;	1195	ev_tstamp odiff = rtmn_diff;
1069		1196
1070	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1197	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1071	{	1198	{
1072	rtmn_diff = rt_now - mn_now;	1199	rtmn_diff = ev_rt_now - mn_now;
1073		1200
1074	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1201	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1075	return; /* all is well */	1202	return; /* all is well */
1076		1203
1077	rt_now = ev_time ();	1204	ev_rt_now = ev_time ();
1078	mn_now = get_clock ();	1205	mn_now = get_clock ();
1079	now_floor = mn_now;	1206	now_floor = mn_now;
1080	}	1207	}
1081		1208
		1209	# if EV_PERIODICS
1082	periodics_reschedule (EV_A);	1210	periodics_reschedule (EV_A);
		1211	# endif
1083	/* no timer adjustment, as the monotonic clock doesn't jump */	1212	/* no timer adjustment, as the monotonic clock doesn't jump */
1084	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1213	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1085	}	1214	}
1086	}	1215	}
1087	else	1216	else
1088	#endif	1217	#endif
1089	{	1218	{
1090	rt_now = ev_time ();	1219	ev_rt_now = ev_time ();
1091		1220
1092	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1221	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1093	{	1222	{
		1223	#if EV_PERIODICS
1094	periodics_reschedule (EV_A);	1224	periodics_reschedule (EV_A);
		1225	#endif
1095		1226
1096	/* adjust timers. this is easy, as the offset is the same for all */	1227	/* adjust timers. this is easy, as the offset is the same for all */
1097	for (i = 0; i < timercnt; ++i)	1228	for (i = 0; i < timercnt; ++i)
1098	((WT)timers [i])->at += rt_now - mn_now;	1229	((WT)timers [i])->at += ev_rt_now - mn_now;
1099	}	1230	}
1100		1231
1101	mn_now = rt_now;	1232	mn_now = ev_rt_now;
1102	}	1233	}
1103	}	1234	}
1104		1235
1105	void	1236	void
1106	ev_ref (EV_P)	1237	ev_ref (EV_P)
…		…
1120	ev_loop (EV_P_ int flags)	1251	ev_loop (EV_P_ int flags)
1121	{	1252	{
1122	double block;	1253	double block;
1123	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1254	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
1124		1255
1125	do	1256	while (activecnt)
1126	{	1257	{
1127	/* queue check watchers (and execute them) */	1258	/* queue check watchers (and execute them) */
1128	if (expect_false (preparecnt))	1259	if (expect_false (preparecnt))
1129	{	1260	{
1130	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1261	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1138	/* update fd-related kernel structures */	1269	/* update fd-related kernel structures */
1139	fd_reify (EV_A);	1270	fd_reify (EV_A);
1140		1271
1141	/* calculate blocking time */	1272	/* calculate blocking time */
1142		1273
1143	/* we only need this for !monotonic clockor timers, but as we basically	1274	/* we only need this for !monotonic clock or timers, but as we basically
1144	always have timers, we just calculate it always */	1275	always have timers, we just calculate it always */
1145	#if EV_USE_MONOTONIC	1276	#if EV_USE_MONOTONIC
1146	if (expect_true (have_monotonic))	1277	if (expect_true (have_monotonic))
1147	time_update_monotonic (EV_A);	1278	time_update_monotonic (EV_A);
1148	else	1279	else
1149	#endif	1280	#endif
1150	{	1281	{
1151	rt_now = ev_time ();	1282	ev_rt_now = ev_time ();
1152	mn_now = rt_now;	1283	mn_now = ev_rt_now;
1153	}	1284	}
1154		1285
1155	if (flags & EVLOOP_NONBLOCK || idlecnt)	1286	if (flags & EVLOOP_NONBLOCK || idlecnt)
1156	block = 0.;	1287	block = 0.;
1157	else	1288	else
1158	{	1289	{
1159	block = MAX_BLOCKTIME;	1290	block = MAX_BLOCKTIME;
1160		1291
1161	if (timercnt)	1292	if (timercnt)
1162	{	1293	{
1163	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1294	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1164	if (block > to) block = to;	1295	if (block > to) block = to;
1165	}	1296	}
1166		1297
		1298	#if EV_PERIODICS
1167	if (periodiccnt)	1299	if (periodiccnt)
1168	{	1300	{
1169	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1301	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1170	if (block > to) block = to;	1302	if (block > to) block = to;
1171	}	1303	}
		1304	#endif
1172		1305
1173	if (block < 0.) block = 0.;	1306	if (expect_false (block < 0.)) block = 0.;
1174	}	1307	}
1175		1308
1176	method_poll (EV_A_ block);	1309	backend_poll (EV_A_ block);
1177		1310
1178	/* update rt_now, do magic */	1311	/* update ev_rt_now, do magic */
1179	time_update (EV_A);	1312	time_update (EV_A);
1180		1313
1181	/* queue pending timers and reschedule them */	1314	/* queue pending timers and reschedule them */
1182	timers_reify (EV_A); /* relative timers called last */	1315	timers_reify (EV_A); /* relative timers called last */
		1316	#if EV_PERIODICS
1183	periodics_reify (EV_A); /* absolute timers called first */	1317	periodics_reify (EV_A); /* absolute timers called first */
		1318	#endif
1184		1319
1185	/* queue idle watchers unless io or timers are pending */	1320	/* queue idle watchers unless io or timers are pending */
1186	if (!pendingcnt)	1321	if (idlecnt && !any_pending (EV_A))
1187	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1322	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1188		1323
1189	/* queue check watchers, to be executed first */	1324	/* queue check watchers, to be executed first */
1190	if (checkcnt)	1325	if (expect_false (checkcnt))
1191	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1326	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1192		1327
1193	call_pending (EV_A);	1328	call_pending (EV_A);
		1329
		1330	if (expect_false (loop_done))
		1331	break;
1194	}	1332	}
1195	while (activecnt && !loop_done);
1196		1333
1197	if (loop_done != 2)	1334	if (loop_done != 2)
1198	loop_done = 0;	1335	loop_done = 0;
1199	}	1336	}
1200		1337
…		…
1260	void	1397	void
1261	ev_io_start (EV_P_ struct ev_io *w)	1398	ev_io_start (EV_P_ struct ev_io *w)
1262	{	1399	{
1263	int fd = w->fd;	1400	int fd = w->fd;
1264		1401
1265	if (ev_is_active (w))	1402	if (expect_false (ev_is_active (w)))
1266	return;	1403	return;
1267		1404
1268	assert (("ev_io_start called with negative fd", fd >= 0));	1405	assert (("ev_io_start called with negative fd", fd >= 0));
1269		1406
1270	ev_start (EV_A_ (W)w, 1);	1407	ev_start (EV_A_ (W)w, 1);
1271	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1408	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1272	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1409	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1273		1410
1274	fd_change (EV_A_ fd);	1411	fd_change (EV_A_ fd);
1275	}	1412	}
1276		1413
1277	void	1414	void
1278	ev_io_stop (EV_P_ struct ev_io *w)	1415	ev_io_stop (EV_P_ struct ev_io *w)
1279	{	1416	{
1280	ev_clear_pending (EV_A_ (W)w);	1417	ev_clear_pending (EV_A_ (W)w);
1281	if (!ev_is_active (w))	1418	if (expect_false (!ev_is_active (w)))
1282	return;	1419	return;
		1420
		1421	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1283		1422
1284	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1423	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1285	ev_stop (EV_A_ (W)w);	1424	ev_stop (EV_A_ (W)w);
1286		1425
1287	fd_change (EV_A_ w->fd);	1426	fd_change (EV_A_ w->fd);
1288	}	1427	}
1289		1428
1290	void	1429	void
1291	ev_timer_start (EV_P_ struct ev_timer *w)	1430	ev_timer_start (EV_P_ struct ev_timer *w)
1292	{	1431	{
1293	if (ev_is_active (w))	1432	if (expect_false (ev_is_active (w)))
1294	return;	1433	return;
1295		1434
1296	((WT)w)->at += mn_now;	1435	((WT)w)->at += mn_now;
1297		1436
1298	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.));
1299		1438
1300	ev_start (EV_A_ (W)w, ++timercnt);	1439	ev_start (EV_A_ (W)w, ++timercnt);
1301	array_needsize (timers, timermax, timercnt, (void));	1440	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1302	timers [timercnt - 1] = w;	1441	timers [timercnt - 1] = w;
1303	upheap ((WT *)timers, timercnt - 1);	1442	upheap ((WT *)timers, timercnt - 1);
1304		1443
1305	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1444	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1306	}	1445	}
1307		1446
1308	void	1447	void
1309	ev_timer_stop (EV_P_ struct ev_timer *w)	1448	ev_timer_stop (EV_P_ struct ev_timer *w)
1310	{	1449	{
1311	ev_clear_pending (EV_A_ (W)w);	1450	ev_clear_pending (EV_A_ (W)w);
1312	if (!ev_is_active (w))	1451	if (expect_false (!ev_is_active (w)))
1313	return;	1452	return;
1314		1453
1315	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1454	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1316		1455
1317	if (((W)w)->active < timercnt--)	1456	if (expect_true (((W)w)->active < timercnt--))
1318	{	1457	{
1319	timers [((W)w)->active - 1] = timers [timercnt];	1458	timers [((W)w)->active - 1] = timers [timercnt];
1320	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1459	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1321	}	1460	}
1322		1461
1323	((WT)w)->at = w->repeat;	1462	((WT)w)->at -= mn_now;
1324		1463
1325	ev_stop (EV_A_ (W)w);	1464	ev_stop (EV_A_ (W)w);
1326	}	1465	}
1327		1466
1328	void	1467	void
…		…
1331	if (ev_is_active (w))	1470	if (ev_is_active (w))
1332	{	1471	{
1333	if (w->repeat)	1472	if (w->repeat)
1334	{	1473	{
1335	((WT)w)->at = mn_now + w->repeat;	1474	((WT)w)->at = mn_now + w->repeat;
1336	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1475	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1337	}	1476	}
1338	else	1477	else
1339	ev_timer_stop (EV_A_ w);	1478	ev_timer_stop (EV_A_ w);
1340	}	1479	}
1341	else if (w->repeat)	1480	else if (w->repeat)
		1481	{
		1482	w->at = w->repeat;
1342	ev_timer_start (EV_A_ w);	1483	ev_timer_start (EV_A_ w);
		1484	}
1343	}	1485	}
1344		1486
		1487	#if EV_PERIODICS
1345	void	1488	void
1346	ev_periodic_start (EV_P_ struct ev_periodic *w)	1489	ev_periodic_start (EV_P_ struct ev_periodic *w)
1347	{	1490	{
1348	if (ev_is_active (w))	1491	if (expect_false (ev_is_active (w)))
1349	return;	1492	return;
1350		1493
		1494	if (w->reschedule_cb)
		1495	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1496	else if (w->interval)
		1497	{
1351	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.));
1352
1353	/* 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 */
1354	if (w->interval)
1355	((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;
		1501	}
1356		1502
1357	ev_start (EV_A_ (W)w, ++periodiccnt);	1503	ev_start (EV_A_ (W)w, ++periodiccnt);
1358	array_needsize (periodics, periodicmax, periodiccnt, (void));	1504	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1359	periodics [periodiccnt - 1] = w;	1505	periodics [periodiccnt - 1] = w;
1360	upheap ((WT *)periodics, periodiccnt - 1);	1506	upheap ((WT *)periodics, periodiccnt - 1);
1361		1507
1362	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1508	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1363	}	1509	}
1364		1510
1365	void	1511	void
1366	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1512	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1367	{	1513	{
1368	ev_clear_pending (EV_A_ (W)w);	1514	ev_clear_pending (EV_A_ (W)w);
1369	if (!ev_is_active (w))	1515	if (expect_false (!ev_is_active (w)))
1370	return;	1516	return;
1371		1517
1372	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1518	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1373		1519
1374	if (((W)w)->active < periodiccnt--)	1520	if (expect_true (((W)w)->active < periodiccnt--))
1375	{	1521	{
1376	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1522	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1377	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1523	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1378	}	1524	}
1379		1525
1380	ev_stop (EV_A_ (W)w);	1526	ev_stop (EV_A_ (W)w);
1381	}	1527	}
1382		1528
1383	void	1529	void
		1530	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1531	{
		1532	/* TODO: use adjustheap and recalculation */
		1533	ev_periodic_stop (EV_A_ w);
		1534	ev_periodic_start (EV_A_ w);
		1535	}
		1536	#endif
		1537
		1538	void
1384	ev_idle_start (EV_P_ struct ev_idle *w)	1539	ev_idle_start (EV_P_ struct ev_idle *w)
1385	{	1540	{
1386	if (ev_is_active (w))	1541	if (expect_false (ev_is_active (w)))
1387	return;	1542	return;
1388		1543
1389	ev_start (EV_A_ (W)w, ++idlecnt);	1544	ev_start (EV_A_ (W)w, ++idlecnt);
1390	array_needsize (idles, idlemax, idlecnt, (void));	1545	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1391	idles [idlecnt - 1] = w;	1546	idles [idlecnt - 1] = w;
1392	}	1547	}
1393		1548
1394	void	1549	void
1395	ev_idle_stop (EV_P_ struct ev_idle *w)	1550	ev_idle_stop (EV_P_ struct ev_idle *w)
1396	{	1551	{
1397	ev_clear_pending (EV_A_ (W)w);	1552	ev_clear_pending (EV_A_ (W)w);
1398	if (ev_is_active (w))	1553	if (expect_false (!ev_is_active (w)))
1399	return;	1554	return;
1400		1555
1401	idles [((W)w)->active - 1] = idles [--idlecnt];	1556	idles [((W)w)->active - 1] = idles [--idlecnt];
1402	ev_stop (EV_A_ (W)w);	1557	ev_stop (EV_A_ (W)w);
1403	}	1558	}
1404		1559
1405	void	1560	void
1406	ev_prepare_start (EV_P_ struct ev_prepare *w)	1561	ev_prepare_start (EV_P_ struct ev_prepare *w)
1407	{	1562	{
1408	if (ev_is_active (w))	1563	if (expect_false (ev_is_active (w)))
1409	return;	1564	return;
1410		1565
1411	ev_start (EV_A_ (W)w, ++preparecnt);	1566	ev_start (EV_A_ (W)w, ++preparecnt);
1412	array_needsize (prepares, preparemax, preparecnt, (void));	1567	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1413	prepares [preparecnt - 1] = w;	1568	prepares [preparecnt - 1] = w;
1414	}	1569	}
1415		1570
1416	void	1571	void
1417	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1572	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1418	{	1573	{
1419	ev_clear_pending (EV_A_ (W)w);	1574	ev_clear_pending (EV_A_ (W)w);
1420	if (ev_is_active (w))	1575	if (expect_false (!ev_is_active (w)))
1421	return;	1576	return;
1422		1577
1423	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1578	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1424	ev_stop (EV_A_ (W)w);	1579	ev_stop (EV_A_ (W)w);
1425	}	1580	}
1426		1581
1427	void	1582	void
1428	ev_check_start (EV_P_ struct ev_check *w)	1583	ev_check_start (EV_P_ struct ev_check *w)
1429	{	1584	{
1430	if (ev_is_active (w))	1585	if (expect_false (ev_is_active (w)))
1431	return;	1586	return;
1432		1587
1433	ev_start (EV_A_ (W)w, ++checkcnt);	1588	ev_start (EV_A_ (W)w, ++checkcnt);
1434	array_needsize (checks, checkmax, checkcnt, (void));	1589	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1435	checks [checkcnt - 1] = w;	1590	checks [checkcnt - 1] = w;
1436	}	1591	}
1437		1592
1438	void	1593	void
1439	ev_check_stop (EV_P_ struct ev_check *w)	1594	ev_check_stop (EV_P_ struct ev_check *w)
1440	{	1595	{
1441	ev_clear_pending (EV_A_ (W)w);	1596	ev_clear_pending (EV_A_ (W)w);
1442	if (ev_is_active (w))	1597	if (expect_false (!ev_is_active (w)))
1443	return;	1598	return;
1444		1599
1445	checks [((W)w)->active - 1] = checks [--checkcnt];	1600	checks [((W)w)->active - 1] = checks [--checkcnt];
1446	ev_stop (EV_A_ (W)w);	1601	ev_stop (EV_A_ (W)w);
1447	}	1602	}
…		…
1452		1607
1453	void	1608	void
1454	ev_signal_start (EV_P_ struct ev_signal *w)	1609	ev_signal_start (EV_P_ struct ev_signal *w)
1455	{	1610	{
1456	#if EV_MULTIPLICITY	1611	#if EV_MULTIPLICITY
1457	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));
1458	#endif	1613	#endif
1459	if (ev_is_active (w))	1614	if (expect_false (ev_is_active (w)))
1460	return;	1615	return;
1461		1616
1462	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));
1463		1618
1464	ev_start (EV_A_ (W)w, 1);	1619	ev_start (EV_A_ (W)w, 1);
1465	array_needsize (signals, signalmax, w->signum, signals_init);	1620	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1466	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1621	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1467		1622
1468	if (!((WL)w)->next)	1623	if (!((WL)w)->next)
1469	{	1624	{
1470	#if WIN32	1625	#if _WIN32
1471	signal (w->signum, sighandler);	1626	signal (w->signum, sighandler);
1472	#else	1627	#else
1473	struct sigaction sa;	1628	struct sigaction sa;
1474	sa.sa_handler = sighandler;	1629	sa.sa_handler = sighandler;
1475	sigfillset (&sa.sa_mask);	1630	sigfillset (&sa.sa_mask);
…		…
1481		1636
1482	void	1637	void
1483	ev_signal_stop (EV_P_ struct ev_signal *w)	1638	ev_signal_stop (EV_P_ struct ev_signal *w)
1484	{	1639	{
1485	ev_clear_pending (EV_A_ (W)w);	1640	ev_clear_pending (EV_A_ (W)w);
1486	if (!ev_is_active (w))	1641	if (expect_false (!ev_is_active (w)))
1487	return;	1642	return;
1488		1643
1489	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1644	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1490	ev_stop (EV_A_ (W)w);	1645	ev_stop (EV_A_ (W)w);
1491		1646
…		…
1495		1650
1496	void	1651	void
1497	ev_child_start (EV_P_ struct ev_child *w)	1652	ev_child_start (EV_P_ struct ev_child *w)
1498	{	1653	{
1499	#if EV_MULTIPLICITY	1654	#if EV_MULTIPLICITY
1500	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));
1501	#endif	1656	#endif
1502	if (ev_is_active (w))	1657	if (expect_false (ev_is_active (w)))
1503	return;	1658	return;
1504		1659
1505	ev_start (EV_A_ (W)w, 1);	1660	ev_start (EV_A_ (W)w, 1);
1506	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1661	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1507	}	1662	}
1508		1663
1509	void	1664	void
1510	ev_child_stop (EV_P_ struct ev_child *w)	1665	ev_child_stop (EV_P_ struct ev_child *w)
1511	{	1666	{
1512	ev_clear_pending (EV_A_ (W)w);	1667	ev_clear_pending (EV_A_ (W)w);
1513	if (ev_is_active (w))	1668	if (expect_false (!ev_is_active (w)))
1514	return;	1669	return;
1515		1670
1516	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1671	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1517	ev_stop (EV_A_ (W)w);	1672	ev_stop (EV_A_ (W)w);
1518	}	1673	}
		1674
		1675	#if EV_MULTIPLICITY
		1676	static void
		1677	embed_cb (EV_P_ struct ev_io *io, int revents)
		1678	{
		1679	struct ev_embed *w = (struct ev_embed *)(((char *)io) - offsetof (struct ev_embed, io));
		1680
		1681	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1682	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1683	}
		1684
		1685	void
		1686	ev_embed_start (EV_P_ struct ev_embed *w)
		1687	{
		1688	if (expect_false (ev_is_active (w)))
		1689	return;
		1690
		1691	{
		1692	struct ev_loop *loop = w->loop;
		1693	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1694	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1695	}
		1696
		1697	ev_io_start (EV_A_ &w->io);
		1698	ev_start (EV_A_ (W)w, 1);
		1699	}
		1700
		1701	void
		1702	ev_embed_stop (EV_P_ struct ev_embed *w)
		1703	{
		1704	ev_clear_pending (EV_A_ (W)w);
		1705	if (expect_false (!ev_is_active (w)))
		1706	return;
		1707
		1708	ev_io_stop (EV_A_ &w->io);
		1709	ev_stop (EV_A_ (W)w);
		1710	}
		1711	#endif
1519		1712
1520	/*****************************************************************************/	1713	/*****************************************************************************/
1521		1714
1522	struct ev_once	1715	struct ev_once
1523	{	1716	{
…		…
1553	}	1746	}
1554		1747
1555	void	1748	void
1556	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1749	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1557	{	1750	{
1558	struct ev_once *once = ev_malloc (sizeof (struct ev_once));	1751	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1559		1752
1560	if (!once)	1753	if (expect_false (!once))
		1754	{
1561	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1755	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1562	else	1756	return;
1563	{	1757	}
		1758
1564	once->cb = cb;	1759	once->cb = cb;
1565	once->arg = arg;	1760	once->arg = arg;
1566		1761
1567	ev_watcher_init (&once->io, once_cb_io);	1762	ev_init (&once->io, once_cb_io);
1568	if (fd >= 0)	1763	if (fd >= 0)
1569	{	1764	{
1570	ev_io_set (&once->io, fd, events);	1765	ev_io_set (&once->io, fd, events);
1571	ev_io_start (EV_A_ &once->io);	1766	ev_io_start (EV_A_ &once->io);
1572	}	1767	}
1573		1768
1574	ev_watcher_init (&once->to, once_cb_to);	1769	ev_init (&once->to, once_cb_to);
1575	if (timeout >= 0.)	1770	if (timeout >= 0.)
1576	{	1771	{
1577	ev_timer_set (&once->to, timeout, 0.);	1772	ev_timer_set (&once->to, timeout, 0.);
1578	ev_timer_start (EV_A_ &once->to);	1773	ev_timer_start (EV_A_ &once->to);
1579	}
1580	}	1774	}
1581	}	1775	}
1582		1776
		1777	#ifdef __cplusplus
		1778	}
		1779	#endif
		1780

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