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Comparing libev/ev.c (file contents):
Revision 1.52 by root, Sat Nov 3 22:10:39 2007 UTC vs.
Revision 1.127 by root, Sun Nov 18 02:17:57 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
32	# include "config.h"	37	# include "config.h"
		38
		39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
		41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
		44	# define EV_USE_REALTIME 1
		45	# endif
		46	# else
		47	# ifndef EV_USE_MONOTONIC
		48	# define EV_USE_MONOTONIC 0
		49	# endif
		50	# ifndef EV_USE_REALTIME
		51	# define EV_USE_REALTIME 0
		52	# endif
		53	# endif
		54
		55	# ifndef EV_USE_SELECT
		56	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		57	# define EV_USE_SELECT 1
		58	# else
		59	# define EV_USE_SELECT 0
		60	# endif
		61	# endif
		62
		63	# ifndef EV_USE_POLL
		64	# if HAVE_POLL && HAVE_POLL_H
		65	# define EV_USE_POLL 1
		66	# else
		67	# define EV_USE_POLL 0
		68	# endif
		69	# endif
		70
		71	# ifndef EV_USE_EPOLL
		72	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		73	# define EV_USE_EPOLL 1
		74	# else
		75	# define EV_USE_EPOLL 0
		76	# endif
		77	# endif
		78
		79	# ifndef EV_USE_KQUEUE
		80	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		81	# define EV_USE_KQUEUE 1
		82	# else
		83	# define EV_USE_KQUEUE 0
		84	# endif
		85	# endif
		86
		87	# ifndef EV_USE_PORT
		88	# if HAVE_PORT_H && HAVE_PORT_CREATE
		89	# define EV_USE_PORT 1
		90	# else
		91	# define EV_USE_PORT 0
		92	# endif
		93	# endif
		94
33	#endif	95	#endif
34		96
35	#include <math.h>	97	#include <math.h>
36	#include <stdlib.h>	98	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	99	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	100	#include <stddef.h>
41		101
42	#include <stdio.h>	102	#include <stdio.h>
43		103
44	#include <assert.h>	104	#include <assert.h>
45	#include <errno.h>	105	#include <errno.h>
46	#include <sys/types.h>	106	#include <sys/types.h>
		107	#include <time.h>
		108
		109	#include <signal.h>
		110
47	#ifndef WIN32	111	#ifndef _WIN32
		112	# include <unistd.h>
		113	# include <sys/time.h>
48	# include <sys/wait.h>	114	# include <sys/wait.h>
		115	#else
		116	# define WIN32_LEAN_AND_MEAN
		117	# include <windows.h>
		118	# ifndef EV_SELECT_IS_WINSOCKET
		119	# define EV_SELECT_IS_WINSOCKET 1
49	#endif	120	# endif
50	#include <sys/time.h>	121	#endif
51	#include <time.h>
52		122
53	/**/	123	/**/
54		124
55	#ifndef EV_USE_MONOTONIC	125	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	126	# define EV_USE_MONOTONIC 0
		127	#endif
		128
		129	#ifndef EV_USE_REALTIME
		130	# define EV_USE_REALTIME 0
57	#endif	131	#endif
58		132
59	#ifndef EV_USE_SELECT	133	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	134	# define EV_USE_SELECT 1
61	#endif	135	#endif
62		136
63	#ifndef EV_USEV_POLL	137	#ifndef EV_USE_POLL
64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */	138	# ifdef _WIN32
		139	# define EV_USE_POLL 0
		140	# else
		141	# define EV_USE_POLL 1
		142	# endif
65	#endif	143	#endif
66		144
67	#ifndef EV_USE_EPOLL	145	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	146	# define EV_USE_EPOLL 0
69	#endif	147	#endif
70		148
71	#ifndef EV_USE_KQUEUE	149	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	150	# define EV_USE_KQUEUE 0
73	#endif	151	#endif
74		152
75	#ifndef EV_USE_REALTIME	153	#ifndef EV_USE_PORT
76	# define EV_USE_REALTIME 1	154	# define EV_USE_PORT 0
77	#endif	155	#endif
78		156
79	/**/	157	/**/
		158
		159	/* darwin simply cannot be helped */
		160	#ifdef __APPLE__
		161	# undef EV_USE_POLL
		162	# undef EV_USE_KQUEUE
		163	#endif
80		164
81	#ifndef CLOCK_MONOTONIC	165	#ifndef CLOCK_MONOTONIC
82	# undef EV_USE_MONOTONIC	166	# undef EV_USE_MONOTONIC
83	# define EV_USE_MONOTONIC 0	167	# define EV_USE_MONOTONIC 0
84	#endif	168	#endif
…		…
86	#ifndef CLOCK_REALTIME	170	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	171	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	172	# define EV_USE_REALTIME 0
89	#endif	173	#endif
90		174
		175	#if EV_SELECT_IS_WINSOCKET
		176	# include <winsock.h>
		177	#endif
		178
91	/**/	179	/**/
92		180
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	181	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	182	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	183	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
96	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	184	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
97		185
		186	#ifdef EV_H
		187	# include EV_H
		188	#else
98	#include "ev.h"	189	# include "ev.h"
		190	#endif
99		191
100	#if __GNUC__ >= 3	192	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	193	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	194	# define inline static inline
103	#else	195	#else
104	# define expect(expr,value) (expr)	196	# define expect(expr,value) (expr)
105	# define inline static	197	# define inline static
106	#endif	198	#endif
107		199
…		…
109	#define expect_true(expr) expect ((expr) != 0, 1)	201	#define expect_true(expr) expect ((expr) != 0, 1)
110		202
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	203	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	204	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113		205
		206	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		207	#define EMPTY2(a,b) /* used to suppress some warnings */
		208
114	typedef struct ev_watcher *W;	209	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	210	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	211	typedef struct ev_watcher_time *WT;
117		212
118	static ev_tstamp now_floor, mn_now, diff; /* monotonic clock */	213	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119	static ev_tstamp rt_now;
120	static int method;
121		214
122	static int have_monotonic; /* runtime */	215	#ifdef _WIN32
123		216	# include "ev_win32.c"
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
125	static void (*method_modify)(EV_P_ int fd, int oev, int nev);
126	static void (*method_poll)(EV_P_ ev_tstamp timeout);
127
128	static int activecnt; /* number of active events */
129
130	#if EV_USE_SELECT
131	static unsigned char *vec_ri, *vec_ro, *vec_wi, *vec_wo;
132	static int vec_max;
133	#endif
134
135	#if EV_USEV_POLL
136	static struct pollfd *polls;
137	static int pollmax, pollcnt;
138	static int *pollidxs; /* maps fds into structure indices */
139	static int pollidxmax;
140	#endif
141
142	#if EV_USE_EPOLL
143	static int epoll_fd = -1;
144
145	static struct epoll_event *events;
146	static int eventmax;
147	#endif
148
149	#if EV_USE_KQUEUE
150	static int kqueue_fd;
151	static struct kevent *kqueue_changes;
152	static int kqueue_changemax, kqueue_changecnt;
153	static struct kevent *kqueue_events;
154	static int kqueue_eventmax;
155	#endif	217	#endif
156		218
157	/*****************************************************************************/	219	/*****************************************************************************/
158		220
159	inline ev_tstamp	221	static void (*syserr_cb)(const char *msg);
		222
		223	void ev_set_syserr_cb (void (*cb)(const char *msg))
		224	{
		225	syserr_cb = cb;
		226	}
		227
		228	static void
		229	syserr (const char *msg)
		230	{
		231	if (!msg)
		232	msg = "(libev) system error";
		233
		234	if (syserr_cb)
		235	syserr_cb (msg);
		236	else
		237	{
		238	perror (msg);
		239	abort ();
		240	}
		241	}
		242
		243	static void *(*alloc)(void *ptr, long size);
		244
		245	void ev_set_allocator (void *(*cb)(void *ptr, long size))
		246	{
		247	alloc = cb;
		248	}
		249
		250	static void *
		251	ev_realloc (void *ptr, long size)
		252	{
		253	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		254
		255	if (!ptr && size)
		256	{
		257	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		258	abort ();
		259	}
		260
		261	return ptr;
		262	}
		263
		264	#define ev_malloc(size) ev_realloc (0, (size))
		265	#define ev_free(ptr) ev_realloc ((ptr), 0)
		266
		267	/*****************************************************************************/
		268
		269	typedef struct
		270	{
		271	WL head;
		272	unsigned char events;
		273	unsigned char reify;
		274	#if EV_SELECT_IS_WINSOCKET
		275	SOCKET handle;
		276	#endif
		277	} ANFD;
		278
		279	typedef struct
		280	{
		281	W w;
		282	int events;
		283	} ANPENDING;
		284
		285	#if EV_MULTIPLICITY
		286
		287	struct ev_loop
		288	{
		289	ev_tstamp ev_rt_now;
		290	#define ev_rt_now ((loop)->ev_rt_now)
		291	#define VAR(name,decl) decl;
		292	#include "ev_vars.h"
		293	#undef VAR
		294	};
		295	#include "ev_wrap.h"
		296
		297	static struct ev_loop default_loop_struct;
		298	struct ev_loop *ev_default_loop_ptr;
		299
		300	#else
		301
		302	ev_tstamp ev_rt_now;
		303	#define VAR(name,decl) static decl;
		304	#include "ev_vars.h"
		305	#undef VAR
		306
		307	static int ev_default_loop_ptr;
		308
		309	#endif
		310
		311	/*****************************************************************************/
		312
		313	ev_tstamp
160	ev_time (void)	314	ev_time (void)
161	{	315	{
162	#if EV_USE_REALTIME	316	#if EV_USE_REALTIME
163	struct timespec ts;	317	struct timespec ts;
164	clock_gettime (CLOCK_REALTIME, &ts);	318	clock_gettime (CLOCK_REALTIME, &ts);
…		…
183	#endif	337	#endif
184		338
185	return ev_time ();	339	return ev_time ();
186	}	340	}
187		341
		342	#if EV_MULTIPLICITY
188	ev_tstamp	343	ev_tstamp
189	ev_now (EV_P)	344	ev_now (EV_P)
190	{	345	{
191	return rt_now;	346	return ev_rt_now;
192	}	347	}
		348	#endif
193		349
194	#define array_roundsize(base,n) ((n) | 4 & ~3)	350	#define array_roundsize(type,n) (((n) | 4) & ~3)
195		351
196	#define array_needsize(base,cur,cnt,init) \	352	#define array_needsize(type,base,cur,cnt,init) \
197	if (expect_false ((cnt) > cur)) \	353	if (expect_false ((cnt) > cur)) \
198	{ \	354	{ \
199	int newcnt = cur; \	355	int newcnt = cur; \
200	do \	356	do \
201	{ \	357	{ \
202	newcnt = array_roundsize (base, newcnt << 1); \	358	newcnt = array_roundsize (type, newcnt << 1); \
203	} \	359	} \
204	while ((cnt) > newcnt); \	360	while ((cnt) > newcnt); \
205	\	361	\
206	base = realloc (base, sizeof (*base) * (newcnt)); \	362	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
207	init (base + cur, newcnt - cur); \	363	init (base + cur, newcnt - cur); \
208	cur = newcnt; \	364	cur = newcnt; \
209	}	365	}
		366
		367	#define array_slim(type,stem) \
		368	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		369	{ \
		370	stem ## max = array_roundsize (stem ## cnt >> 1); \
		371	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		372	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		373	}
		374
		375	#define array_free(stem, idx) \
		376	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
210		377
211	/*****************************************************************************/	378	/*****************************************************************************/
212
213	typedef struct
214	{
215	struct ev_watcher_list *head;
216	unsigned char events;
217	unsigned char reify;
218	} ANFD;
219
220	static ANFD *anfds;
221	static int anfdmax;
222		379
223	static void	380	static void
224	anfds_init (ANFD *base, int count)	381	anfds_init (ANFD *base, int count)
225	{	382	{
226	while (count--)	383	while (count--)
…		…
231		388
232	++base;	389	++base;
233	}	390	}
234	}	391	}
235		392
236	typedef struct	393	void
237	{
238	W w;
239	int events;
240	} ANPENDING;
241
242	static ANPENDING *pendings [NUMPRI];
243	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
244
245	static void
246	event (EV_P_ W w, int events)	394	ev_feed_event (EV_P_ void *w, int revents)
247	{	395	{
248	if (w->pending)	396	W w_ = (W)w;
		397
		398	if (expect_false (w_->pending))
249	{	399	{
250	pendings [ABSPRI (w)][w->pending - 1].events |= events;	400	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
251	return;	401	return;
252	}	402	}
253		403
254	w->pending = ++pendingcnt [ABSPRI (w)];	404	w_->pending = ++pendingcnt [ABSPRI (w_)];
255	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	405	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
256	pendings [ABSPRI (w)][w->pending - 1].w = w;	406	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
257	pendings [ABSPRI (w)][w->pending - 1].events = events;	407	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
258	}	408	}
259		409
260	static void	410	static void
261	queue_events (EV_P_ W *events, int eventcnt, int type)	411	queue_events (EV_P_ W *events, int eventcnt, int type)
262	{	412	{
263	int i;	413	int i;
264		414
265	for (i = 0; i < eventcnt; ++i)	415	for (i = 0; i < eventcnt; ++i)
266	event (EV_A_ events [i], type);	416	ev_feed_event (EV_A_ events [i], type);
267	}	417	}
268		418
269	static void	419	inline void
270	fd_event (EV_P_ int fd, int events)	420	fd_event (EV_P_ int fd, int revents)
271	{	421	{
272	ANFD *anfd = anfds + fd;	422	ANFD *anfd = anfds + fd;
273	struct ev_io *w;	423	struct ev_io *w;
274		424
275	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	425	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
276	{	426	{
277	int ev = w->events & events;	427	int ev = w->events & revents;
278		428
279	if (ev)	429	if (ev)
280	event (EV_A_ (W)w, ev);	430	ev_feed_event (EV_A_ (W)w, ev);
281	}	431	}
		432	}
		433
		434	void
		435	ev_feed_fd_event (EV_P_ int fd, int revents)
		436	{
		437	fd_event (EV_A_ fd, revents);
282	}	438	}
283		439
284	/*****************************************************************************/	440	/*****************************************************************************/
285		441
286	static int *fdchanges;	442	inline void
287	static int fdchangemax, fdchangecnt;
288
289	static void
290	fd_reify (EV_P)	443	fd_reify (EV_P)
291	{	444	{
292	int i;	445	int i;
293		446
294	for (i = 0; i < fdchangecnt; ++i)	447	for (i = 0; i < fdchangecnt; ++i)
…		…
300	int events = 0;	453	int events = 0;
301		454
302	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	455	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
303	events |= w->events;	456	events |= w->events;
304		457
		458	#if EV_SELECT_IS_WINSOCKET
		459	if (events)
		460	{
		461	unsigned long argp;
		462	anfd->handle = _get_osfhandle (fd);
		463	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		464	}
		465	#endif
		466
305	anfd->reify = 0;	467	anfd->reify = 0;
306		468
307	if (anfd->events != events)
308	{
309	method_modify (EV_A_ fd, anfd->events, events);	469	method_modify (EV_A_ fd, anfd->events, events);
310	anfd->events = events;	470	anfd->events = events;
311	}
312	}	471	}
313		472
314	fdchangecnt = 0;	473	fdchangecnt = 0;
315	}	474	}
316		475
317	static void	476	static void
318	fd_change (EV_P_ int fd)	477	fd_change (EV_P_ int fd)
319	{	478	{
320	if (anfds [fd].reify || fdchangecnt < 0)	479	if (expect_false (anfds [fd].reify))
321	return;	480	return;
322		481
323	anfds [fd].reify = 1;	482	anfds [fd].reify = 1;
324		483
325	++fdchangecnt;	484	++fdchangecnt;
326	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	485	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
327	fdchanges [fdchangecnt - 1] = fd;	486	fdchanges [fdchangecnt - 1] = fd;
328	}	487	}
329		488
330	static void	489	static void
331	fd_kill (EV_P_ int fd)	490	fd_kill (EV_P_ int fd)
…		…
333	struct ev_io *w;	492	struct ev_io *w;
334		493
335	while ((w = (struct ev_io *)anfds [fd].head))	494	while ((w = (struct ev_io *)anfds [fd].head))
336	{	495	{
337	ev_io_stop (EV_A_ w);	496	ev_io_stop (EV_A_ w);
338	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	497	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
339	}	498	}
		499	}
		500
		501	inline int
		502	fd_valid (int fd)
		503	{
		504	#ifdef _WIN32
		505	return _get_osfhandle (fd) != -1;
		506	#else
		507	return fcntl (fd, F_GETFD) != -1;
		508	#endif
340	}	509	}
341		510
342	/* called on EBADF to verify fds */	511	/* called on EBADF to verify fds */
343	static void	512	static void
344	fd_ebadf (EV_P)	513	fd_ebadf (EV_P)
345	{	514	{
346	int fd;	515	int fd;
347		516
348	for (fd = 0; fd < anfdmax; ++fd)	517	for (fd = 0; fd < anfdmax; ++fd)
349	if (anfds [fd].events)	518	if (anfds [fd].events)
350	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	519	if (!fd_valid (fd) == -1 && errno == EBADF)
351	fd_kill (EV_A_ fd);	520	fd_kill (EV_A_ fd);
352	}	521	}
353		522
354	/* called on ENOMEM in select/poll to kill some fds and retry */	523	/* called on ENOMEM in select/poll to kill some fds and retry */
355	static void	524	static void
356	fd_enomem (EV_P)	525	fd_enomem (EV_P)
357	{	526	{
358	int fd = anfdmax;	527	int fd;
359		528
360	while (fd--)	529	for (fd = anfdmax; fd--; )
361	if (anfds [fd].events)	530	if (anfds [fd].events)
362	{	531	{
363	close (fd);
364	fd_kill (EV_A_ fd);	532	fd_kill (EV_A_ fd);
365	return;	533	return;
366	}	534	}
367	}	535	}
368		536
		537	/* usually called after fork if method needs to re-arm all fds from scratch */
		538	static void
		539	fd_rearm_all (EV_P)
		540	{
		541	int fd;
		542
		543	/* this should be highly optimised to not do anything but set a flag */
		544	for (fd = 0; fd < anfdmax; ++fd)
		545	if (anfds [fd].events)
		546	{
		547	anfds [fd].events = 0;
		548	fd_change (EV_A_ fd);
		549	}
		550	}
		551
369	/*****************************************************************************/	552	/*****************************************************************************/
370		553
371	static struct ev_timer **timers;
372	static int timermax, timercnt;
373
374	static struct ev_periodic **periodics;
375	static int periodicmax, periodiccnt;
376
377	static void	554	static void
378	upheap (WT *timers, int k)	555	upheap (WT *heap, int k)
379	{	556	{
380	WT w = timers [k];	557	WT w = heap [k];
381		558
382	while (k && timers [k >> 1]->at > w->at)	559	while (k && heap [k >> 1]->at > w->at)
383	{	560	{
384	timers [k] = timers [k >> 1];	561	heap [k] = heap [k >> 1];
385	timers [k]->active = k + 1;	562	((W)heap [k])->active = k + 1;
386	k >>= 1;	563	k >>= 1;
387	}	564	}
388		565
389	timers [k] = w;	566	heap [k] = w;
390	timers [k]->active = k + 1;	567	((W)heap [k])->active = k + 1;
391		568
392	}	569	}
393		570
394	static void	571	static void
395	downheap (WT *timers, int N, int k)	572	downheap (WT *heap, int N, int k)
396	{	573	{
397	WT w = timers [k];	574	WT w = heap [k];
398		575
399	while (k < (N >> 1))	576	while (k < (N >> 1))
400	{	577	{
401	int j = k << 1;	578	int j = k << 1;
402		579
403	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	580	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
404	++j;	581	++j;
405		582
406	if (w->at <= timers [j]->at)	583	if (w->at <= heap [j]->at)
407	break;	584	break;
408		585
409	timers [k] = timers [j];	586	heap [k] = heap [j];
410	timers [k]->active = k + 1;	587	((W)heap [k])->active = k + 1;
411	k = j;	588	k = j;
412	}	589	}
413		590
414	timers [k] = w;	591	heap [k] = w;
415	timers [k]->active = k + 1;	592	((W)heap [k])->active = k + 1;
		593	}
		594
		595	inline void
		596	adjustheap (WT *heap, int N, int k)
		597	{
		598	upheap (heap, k);
		599	downheap (heap, N, k);
416	}	600	}
417		601
418	/*****************************************************************************/	602	/*****************************************************************************/
419		603
420	typedef struct	604	typedef struct
421	{	605	{
422	struct ev_watcher_list *head;	606	WL head;
423	sig_atomic_t volatile gotsig;	607	sig_atomic_t volatile gotsig;
424	} ANSIG;	608	} ANSIG;
425		609
426	static ANSIG *signals;	610	static ANSIG *signals;
427	static int signalmax;	611	static int signalmax;
…		…
443	}	627	}
444		628
445	static void	629	static void
446	sighandler (int signum)	630	sighandler (int signum)
447	{	631	{
		632	#if _WIN32
		633	signal (signum, sighandler);
		634	#endif
		635
448	signals [signum - 1].gotsig = 1;	636	signals [signum - 1].gotsig = 1;
449		637
450	if (!gotsig)	638	if (!gotsig)
451	{	639	{
452	int old_errno = errno;	640	int old_errno = errno;
…		…
454	write (sigpipe [1], &signum, 1);	642	write (sigpipe [1], &signum, 1);
455	errno = old_errno;	643	errno = old_errno;
456	}	644	}
457	}	645	}
458		646
		647	void
		648	ev_feed_signal_event (EV_P_ int signum)
		649	{
		650	WL w;
		651
		652	#if EV_MULTIPLICITY
		653	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		654	#endif
		655
		656	--signum;
		657
		658	if (signum < 0 || signum >= signalmax)
		659	return;
		660
		661	signals [signum].gotsig = 0;
		662
		663	for (w = signals [signum].head; w; w = w->next)
		664	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		665	}
		666
459	static void	667	static void
460	sigcb (EV_P_ struct ev_io *iow, int revents)	668	sigcb (EV_P_ struct ev_io *iow, int revents)
461	{	669	{
462	struct ev_watcher_list *w;
463	int signum;	670	int signum;
464		671
465	read (sigpipe [0], &revents, 1);	672	read (sigpipe [0], &revents, 1);
466	gotsig = 0;	673	gotsig = 0;
467		674
468	for (signum = signalmax; signum--; )	675	for (signum = signalmax; signum--; )
469	if (signals [signum].gotsig)	676	if (signals [signum].gotsig)
470	{	677	ev_feed_signal_event (EV_A_ signum + 1);
471	signals [signum].gotsig = 0;	678	}
472		679
473	for (w = signals [signum].head; w; w = w->next)	680	static void
474	event (EV_A_ (W)w, EV_SIGNAL);	681	fd_intern (int fd)
475	}	682	{
		683	#ifdef _WIN32
		684	int arg = 1;
		685	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		686	#else
		687	fcntl (fd, F_SETFD, FD_CLOEXEC);
		688	fcntl (fd, F_SETFL, O_NONBLOCK);
		689	#endif
476	}	690	}
477		691
478	static void	692	static void
479	siginit (EV_P)	693	siginit (EV_P)
480	{	694	{
481	#ifndef WIN32	695	fd_intern (sigpipe [0]);
482	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	696	fd_intern (sigpipe [1]);
483	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
484
485	/* rather than sort out wether we really need nb, set it */
486	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
487	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
488	#endif
489		697
490	ev_io_set (&sigev, sigpipe [0], EV_READ);	698	ev_io_set (&sigev, sigpipe [0], EV_READ);
491	ev_io_start (&sigev);	699	ev_io_start (EV_A_ &sigev);
492	ev_unref (EV_A); /* child watcher should not keep loop alive */	700	ev_unref (EV_A); /* child watcher should not keep loop alive */
493	}	701	}
494		702
495	/*****************************************************************************/	703	/*****************************************************************************/
496		704
497	static struct ev_idle **idles;
498	static int idlemax, idlecnt;
499
500	static struct ev_prepare **prepares;
501	static int preparemax, preparecnt;
502
503	static struct ev_check **checks;
504	static int checkmax, checkcnt;
505
506	/*****************************************************************************/
507
508	static struct ev_child *childs [PID_HASHSIZE];	705	static struct ev_child *childs [PID_HASHSIZE];
		706
		707	#ifndef _WIN32
		708
509	static struct ev_signal childev;	709	static struct ev_signal childev;
510
511	#ifndef WIN32
512		710
513	#ifndef WCONTINUED	711	#ifndef WCONTINUED
514	# define WCONTINUED 0	712	# define WCONTINUED 0
515	#endif	713	#endif
516		714
…		…
520	struct ev_child *w;	718	struct ev_child *w;
521		719
522	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	720	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
523	if (w->pid == pid || !w->pid)	721	if (w->pid == pid || !w->pid)
524	{	722	{
525	w->priority = sw->priority; /* need to do it *now* */	723	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
526	w->rpid = pid;	724	w->rpid = pid;
527	w->rstatus = status;	725	w->rstatus = status;
528	event (EV_A_ (W)w, EV_CHILD);	726	ev_feed_event (EV_A_ (W)w, EV_CHILD);
529	}	727	}
530	}	728	}
531		729
532	static void	730	static void
533	childcb (EV_P_ struct ev_signal *sw, int revents)	731	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
535	int pid, status;	733	int pid, status;
536		734
537	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	735	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
538	{	736	{
539	/* make sure we are called again until all childs have been reaped */	737	/* make sure we are called again until all childs have been reaped */
540	event (EV_A_ (W)sw, EV_SIGNAL);	738	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
541		739
542	child_reap (EV_A_ sw, pid, pid, status);	740	child_reap (EV_A_ sw, pid, pid, status);
543	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	741	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
544	}	742	}
545	}	743	}
546		744
547	#endif	745	#endif
548		746
549	/*****************************************************************************/	747	/*****************************************************************************/
550		748
		749	#if EV_USE_PORT
		750	# include "ev_port.c"
		751	#endif
551	#if EV_USE_KQUEUE	752	#if EV_USE_KQUEUE
552	# include "ev_kqueue.c"	753	# include "ev_kqueue.c"
553	#endif	754	#endif
554	#if EV_USE_EPOLL	755	#if EV_USE_EPOLL
555	# include "ev_epoll.c"	756	# include "ev_epoll.c"
556	#endif	757	#endif
557	#if EV_USEV_POLL	758	#if EV_USE_POLL
558	# include "ev_poll.c"	759	# include "ev_poll.c"
559	#endif	760	#endif
560	#if EV_USE_SELECT	761	#if EV_USE_SELECT
561	# include "ev_select.c"	762	# include "ev_select.c"
562	#endif	763	#endif
…		…
575		776
576	/* return true if we are running with elevated privileges and should ignore env variables */	777	/* return true if we are running with elevated privileges and should ignore env variables */
577	static int	778	static int
578	enable_secure (void)	779	enable_secure (void)
579	{	780	{
580	#ifdef WIN32	781	#ifdef _WIN32
581	return 0;	782	return 0;
582	#else	783	#else
583	return getuid () != geteuid ()	784	return getuid () != geteuid ()
584	|| getgid () != getegid ();	785	|| getgid () != getegid ();
585	#endif	786	#endif
586	}	787	}
587		788
588	int	789	unsigned int
589	ev_method (EV_P)	790	ev_method (EV_P)
590	{	791	{
591	return method;	792	return method;
592	}	793	}
593		794
594	int	795	static void
595	ev_init (EV_P_ int methods)	796	loop_init (EV_P_ unsigned int flags)
596	{	797	{
597	if (!method)	798	if (!method)
598	{	799	{
599	#if EV_USE_MONOTONIC	800	#if EV_USE_MONOTONIC
600	{	801	{
…		…
602	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	803	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
603	have_monotonic = 1;	804	have_monotonic = 1;
604	}	805	}
605	#endif	806	#endif
606		807
607	rt_now = ev_time ();	808	ev_rt_now = ev_time ();
608	mn_now = get_clock ();	809	mn_now = get_clock ();
609	now_floor = mn_now;	810	now_floor = mn_now;
610	diff = rt_now - mn_now;	811	rtmn_diff = ev_rt_now - mn_now;
611		812
612	if (pipe (sigpipe))	813	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
613	return 0;	814	flags = atoi (getenv ("LIBEV_FLAGS"));
614		815
615	if (methods == EVMETHOD_AUTO)	816	if (!(flags & 0x0000ffff))
616	if (!enable_secure () && getenv ("LIBmethodS"))	817	flags |= 0x0000ffff;
617	methods = atoi (getenv ("LIBmethodS"));
618	else
619	methods = EVMETHOD_ANY;
620		818
621	method = 0;	819	method = 0;
		820	#if EV_USE_PORT
		821	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);
		822	#endif
622	#if EV_USE_KQUEUE	823	#if EV_USE_KQUEUE
623	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	824	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
624	#endif	825	#endif
625	#if EV_USE_EPOLL	826	#if EV_USE_EPOLL
626	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	827	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
627	#endif	828	#endif
628	#if EV_USEV_POLL	829	#if EV_USE_POLL
629	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	830	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
630	#endif	831	#endif
631	#if EV_USE_SELECT	832	#if EV_USE_SELECT
632	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	833	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
633	#endif	834	#endif
634		835
		836	ev_init (&sigev, sigcb);
		837	ev_set_priority (&sigev, EV_MAXPRI);
		838	}
		839	}
		840
		841	static void
		842	loop_destroy (EV_P)
		843	{
		844	int i;
		845
		846	#if EV_USE_PORT
		847	if (method == EVMETHOD_PORT ) port_destroy (EV_A);
		848	#endif
		849	#if EV_USE_KQUEUE
		850	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		851	#endif
		852	#if EV_USE_EPOLL
		853	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		854	#endif
		855	#if EV_USE_POLL
		856	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		857	#endif
		858	#if EV_USE_SELECT
		859	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		860	#endif
		861
		862	for (i = NUMPRI; i--; )
		863	array_free (pending, [i]);
		864
		865	/* have to use the microsoft-never-gets-it-right macro */
		866	array_free (fdchange, EMPTY0);
		867	array_free (timer, EMPTY0);
		868	#if EV_PERIODICS
		869	array_free (periodic, EMPTY0);
		870	#endif
		871	array_free (idle, EMPTY0);
		872	array_free (prepare, EMPTY0);
		873	array_free (check, EMPTY0);
		874
		875	method = 0;
		876	}
		877
		878	static void
		879	loop_fork (EV_P)
		880	{
		881	#if EV_USE_PORT
		882	if (method == EVMETHOD_PORT ) port_fork (EV_A);
		883	#endif
		884	#if EV_USE_KQUEUE
		885	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		886	#endif
		887	#if EV_USE_EPOLL
		888	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		889	#endif
		890
		891	if (ev_is_active (&sigev))
		892	{
		893	/* default loop */
		894
		895	ev_ref (EV_A);
		896	ev_io_stop (EV_A_ &sigev);
		897	close (sigpipe [0]);
		898	close (sigpipe [1]);
		899
		900	while (pipe (sigpipe))
		901	syserr ("(libev) error creating pipe");
		902
		903	siginit (EV_A);
		904	}
		905
		906	postfork = 0;
		907	}
		908
		909	#if EV_MULTIPLICITY
		910	struct ev_loop *
		911	ev_loop_new (unsigned int flags)
		912	{
		913	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		914
		915	memset (loop, 0, sizeof (struct ev_loop));
		916
		917	loop_init (EV_A_ flags);
		918
		919	if (ev_method (EV_A))
		920	return loop;
		921
		922	return 0;
		923	}
		924
		925	void
		926	ev_loop_destroy (EV_P)
		927	{
		928	loop_destroy (EV_A);
		929	ev_free (loop);
		930	}
		931
		932	void
		933	ev_loop_fork (EV_P)
		934	{
		935	postfork = 1;
		936	}
		937
		938	#endif
		939
		940	#if EV_MULTIPLICITY
		941	struct ev_loop *
		942	ev_default_loop_init (unsigned int flags)
		943	#else
		944	int
		945	ev_default_loop (unsigned int flags)
		946	#endif
		947	{
		948	if (sigpipe [0] == sigpipe [1])
		949	if (pipe (sigpipe))
		950	return 0;
		951
		952	if (!ev_default_loop_ptr)
		953	{
		954	#if EV_MULTIPLICITY
		955	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		956	#else
		957	ev_default_loop_ptr = 1;
		958	#endif
		959
		960	loop_init (EV_A_ flags);
		961
635	if (method)	962	if (ev_method (EV_A))
636	{	963	{
637	ev_watcher_init (&sigev, sigcb);
638	ev_set_priority (&sigev, EV_MAXPRI);
639	siginit (EV_A);	964	siginit (EV_A);
640		965
641	#ifndef WIN32	966	#ifndef _WIN32
642	ev_signal_init (&childev, childcb, SIGCHLD);	967	ev_signal_init (&childev, childcb, SIGCHLD);
643	ev_set_priority (&childev, EV_MAXPRI);	968	ev_set_priority (&childev, EV_MAXPRI);
644	ev_signal_start (EV_A_ &childev);	969	ev_signal_start (EV_A_ &childev);
645	ev_unref (EV_A); /* child watcher should not keep loop alive */	970	ev_unref (EV_A); /* child watcher should not keep loop alive */
646	#endif	971	#endif
647	}	972	}
		973	else
		974	ev_default_loop_ptr = 0;
648	}	975	}
649		976
650	return method;	977	return ev_default_loop_ptr;
		978	}
		979
		980	void
		981	ev_default_destroy (void)
		982	{
		983	#if EV_MULTIPLICITY
		984	struct ev_loop *loop = ev_default_loop_ptr;
		985	#endif
		986
		987	#ifndef _WIN32
		988	ev_ref (EV_A); /* child watcher */
		989	ev_signal_stop (EV_A_ &childev);
		990	#endif
		991
		992	ev_ref (EV_A); /* signal watcher */
		993	ev_io_stop (EV_A_ &sigev);
		994
		995	close (sigpipe [0]); sigpipe [0] = 0;
		996	close (sigpipe [1]); sigpipe [1] = 0;
		997
		998	loop_destroy (EV_A);
		999	}
		1000
		1001	void
		1002	ev_default_fork (void)
		1003	{
		1004	#if EV_MULTIPLICITY
		1005	struct ev_loop *loop = ev_default_loop_ptr;
		1006	#endif
		1007
		1008	if (method)
		1009	postfork = 1;
651	}	1010	}
652		1011
653	/*****************************************************************************/	1012	/*****************************************************************************/
654		1013
655	void
656	ev_fork_prepare (void)
657	{
658	/* nop */
659	}
660
661	void
662	ev_fork_parent (void)
663	{
664	/* nop */
665	}
666
667	void
668	ev_fork_child (void)
669	{
670	#if EV_USE_EPOLL
671	if (method == EVMETHOD_EPOLL)
672	epoll_postfork_child ();
673	#endif
674
675	ev_io_stop (&sigev);
676	close (sigpipe [0]);
677	close (sigpipe [1]);
678	pipe (sigpipe);
679	siginit ();
680	}
681
682	/*****************************************************************************/
683
684	static void	1014	static int
		1015	any_pending (EV_P)
		1016	{
		1017	int pri;
		1018
		1019	for (pri = NUMPRI; pri--; )
		1020	if (pendingcnt [pri])
		1021	return 1;
		1022
		1023	return 0;
		1024	}
		1025
		1026	inline void
685	call_pending (EV_P)	1027	call_pending (EV_P)
686	{	1028	{
687	int pri;	1029	int pri;
688		1030
689	for (pri = NUMPRI; pri--; )	1031	for (pri = NUMPRI; pri--; )
690	while (pendingcnt [pri])	1032	while (pendingcnt [pri])
691	{	1033	{
692	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1034	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
693		1035
694	if (p->w)	1036	if (expect_true (p->w))
695	{	1037	{
696	p->w->pending = 0;	1038	p->w->pending = 0;
697	p->w->cb (EV_A_ p->w, p->events);	1039	EV_CB_INVOKE (p->w, p->events);
698	}	1040	}
699	}	1041	}
700	}	1042	}
701		1043
702	static void	1044	inline void
703	timers_reify (EV_P)	1045	timers_reify (EV_P)
704	{	1046	{
705	while (timercnt && timers [0]->at <= mn_now)	1047	while (timercnt && ((WT)timers [0])->at <= mn_now)
706	{	1048	{
707	struct ev_timer *w = timers [0];	1049	struct ev_timer *w = timers [0];
		1050
		1051	assert (("inactive timer on timer heap detected", ev_is_active (w)));
708		1052
709	/* first reschedule or stop timer */	1053	/* first reschedule or stop timer */
710	if (w->repeat)	1054	if (w->repeat)
711	{	1055	{
712	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1056	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1057
713	w->at = mn_now + w->repeat;	1058	((WT)w)->at += w->repeat;
		1059	if (((WT)w)->at < mn_now)
		1060	((WT)w)->at = mn_now;
		1061
714	downheap ((WT *)timers, timercnt, 0);	1062	downheap ((WT *)timers, timercnt, 0);
715	}	1063	}
716	else	1064	else
717	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1065	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
718		1066
719	event ((W)w, EV_TIMEOUT);	1067	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
720	}	1068	}
721	}	1069	}
722		1070
723	static void	1071	#if EV_PERIODICS
		1072	inline void
724	periodics_reify (EV_P)	1073	periodics_reify (EV_P)
725	{	1074	{
726	while (periodiccnt && periodics [0]->at <= rt_now)	1075	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
727	{	1076	{
728	struct ev_periodic *w = periodics [0];	1077	struct ev_periodic *w = periodics [0];
729		1078
		1079	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1080
730	/* first reschedule or stop timer */	1081	/* first reschedule or stop timer */
731	if (w->interval)	1082	if (w->reschedule_cb)
732	{	1083	{
		1084	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1085	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1086	downheap ((WT *)periodics, periodiccnt, 0);
		1087	}
		1088	else if (w->interval)
		1089	{
733	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1090	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
734	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1091	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
735	downheap ((WT *)periodics, periodiccnt, 0);	1092	downheap ((WT *)periodics, periodiccnt, 0);
736	}	1093	}
737	else	1094	else
738	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1095	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
739		1096
740	event (EV_A_ (W)w, EV_PERIODIC);	1097	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
741	}	1098	}
742	}	1099	}
743		1100
744	static void	1101	static void
745	periodics_reschedule (EV_P_ ev_tstamp diff)	1102	periodics_reschedule (EV_P)
746	{	1103	{
747	int i;	1104	int i;
748		1105
749	/* adjust periodics after time jump */	1106	/* adjust periodics after time jump */
750	for (i = 0; i < periodiccnt; ++i)	1107	for (i = 0; i < periodiccnt; ++i)
751	{	1108	{
752	struct ev_periodic *w = periodics [i];	1109	struct ev_periodic *w = periodics [i];
753		1110
		1111	if (w->reschedule_cb)
		1112	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
754	if (w->interval)	1113	else if (w->interval)
755	{
756	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1114	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
757
758	if (fabs (diff) >= 1e-4)
759	{
760	ev_periodic_stop (EV_A_ w);
761	ev_periodic_start (EV_A_ w);
762
763	i = 0; /* restart loop, inefficient, but time jumps should be rare */
764	}
765	}
766	}	1115	}
		1116
		1117	/* now rebuild the heap */
		1118	for (i = periodiccnt >> 1; i--; )
		1119	downheap ((WT *)periodics, periodiccnt, i);
767	}	1120	}
		1121	#endif
768		1122
769	inline int	1123	inline int
770	time_update_monotonic (EV_P)	1124	time_update_monotonic (EV_P)
771	{	1125	{
772	mn_now = get_clock ();	1126	mn_now = get_clock ();
773		1127
774	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1128	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
775	{	1129	{
776	rt_now = mn_now + diff;	1130	ev_rt_now = rtmn_diff + mn_now;
777	return 0;	1131	return 0;
778	}	1132	}
779	else	1133	else
780	{	1134	{
781	now_floor = mn_now;	1135	now_floor = mn_now;
782	rt_now = ev_time ();	1136	ev_rt_now = ev_time ();
783	return 1;	1137	return 1;
784	}	1138	}
785	}	1139	}
786		1140
787	static void	1141	inline void
788	time_update (EV_P)	1142	time_update (EV_P)
789	{	1143	{
790	int i;	1144	int i;
791		1145
792	#if EV_USE_MONOTONIC	1146	#if EV_USE_MONOTONIC
793	if (expect_true (have_monotonic))	1147	if (expect_true (have_monotonic))
794	{	1148	{
795	if (time_update_monotonic (EV_A))	1149	if (time_update_monotonic (EV_A))
796	{	1150	{
797	ev_tstamp odiff = diff;	1151	ev_tstamp odiff = rtmn_diff;
798		1152
799	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1153	for (i = 4; --i; ) /* loop a few times, before making important decisions */
800	{	1154	{
801	diff = rt_now - mn_now;	1155	rtmn_diff = ev_rt_now - mn_now;
802		1156
803	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1157	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
804	return; /* all is well */	1158	return; /* all is well */
805		1159
806	rt_now = ev_time ();	1160	ev_rt_now = ev_time ();
807	mn_now = get_clock ();	1161	mn_now = get_clock ();
808	now_floor = mn_now;	1162	now_floor = mn_now;
809	}	1163	}
810		1164
		1165	# if EV_PERIODICS
811	periodics_reschedule (EV_A_ diff - odiff);	1166	periodics_reschedule (EV_A);
		1167	# endif
812	/* no timer adjustment, as the monotonic clock doesn't jump */	1168	/* no timer adjustment, as the monotonic clock doesn't jump */
		1169	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
813	}	1170	}
814	}	1171	}
815	else	1172	else
816	#endif	1173	#endif
817	{	1174	{
818	rt_now = ev_time ();	1175	ev_rt_now = ev_time ();
819		1176
820	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1177	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
821	{	1178	{
		1179	#if EV_PERIODICS
822	periodics_reschedule (EV_A_ rt_now - mn_now);	1180	periodics_reschedule (EV_A);
		1181	#endif
823		1182
824	/* adjust timers. this is easy, as the offset is the same for all */	1183	/* adjust timers. this is easy, as the offset is the same for all */
825	for (i = 0; i < timercnt; ++i)	1184	for (i = 0; i < timercnt; ++i)
826	timers [i]->at += diff;	1185	((WT)timers [i])->at += ev_rt_now - mn_now;
827	}	1186	}
828		1187
829	mn_now = rt_now;	1188	mn_now = ev_rt_now;
830	}	1189	}
831	}	1190	}
832		1191
833	void	1192	void
834	ev_ref (EV_P)	1193	ev_ref (EV_P)
…		…
848	ev_loop (EV_P_ int flags)	1207	ev_loop (EV_P_ int flags)
849	{	1208	{
850	double block;	1209	double block;
851	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1210	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
852		1211
853	do	1212	while (activecnt)
854	{	1213	{
855	/* queue check watchers (and execute them) */	1214	/* queue check watchers (and execute them) */
856	if (expect_false (preparecnt))	1215	if (expect_false (preparecnt))
857	{	1216	{
858	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1217	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
859	call_pending (EV_A);	1218	call_pending (EV_A);
860	}	1219	}
861		1220
		1221	/* we might have forked, so reify kernel state if necessary */
		1222	if (expect_false (postfork))
		1223	loop_fork (EV_A);
		1224
862	/* update fd-related kernel structures */	1225	/* update fd-related kernel structures */
863	fd_reify (EV_A);	1226	fd_reify (EV_A);
864		1227
865	/* calculate blocking time */	1228	/* calculate blocking time */
866		1229
867	/* we only need this for !monotonic clockor timers, but as we basically	1230	/* we only need this for !monotonic clock or timers, but as we basically
868	always have timers, we just calculate it always */	1231	always have timers, we just calculate it always */
869	#if EV_USE_MONOTONIC	1232	#if EV_USE_MONOTONIC
870	if (expect_true (have_monotonic))	1233	if (expect_true (have_monotonic))
871	time_update_monotonic (EV_A);	1234	time_update_monotonic (EV_A);
872	else	1235	else
873	#endif	1236	#endif
874	{	1237	{
875	rt_now = ev_time ();	1238	ev_rt_now = ev_time ();
876	mn_now = rt_now;	1239	mn_now = ev_rt_now;
877	}	1240	}
878		1241
879	if (flags & EVLOOP_NONBLOCK || idlecnt)	1242	if (flags & EVLOOP_NONBLOCK || idlecnt)
880	block = 0.;	1243	block = 0.;
881	else	1244	else
882	{	1245	{
883	block = MAX_BLOCKTIME;	1246	block = MAX_BLOCKTIME;
884		1247
885	if (timercnt)	1248	if (timercnt)
886	{	1249	{
887	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1250	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
888	if (block > to) block = to;	1251	if (block > to) block = to;
889	}	1252	}
890		1253
		1254	#if EV_PERIODICS
891	if (periodiccnt)	1255	if (periodiccnt)
892	{	1256	{
893	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1257	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
894	if (block > to) block = to;	1258	if (block > to) block = to;
895	}	1259	}
		1260	#endif
896		1261
897	if (block < 0.) block = 0.;	1262	if (expect_false (block < 0.)) block = 0.;
898	}	1263	}
899		1264
900	method_poll (EV_A_ block);	1265	method_poll (EV_A_ block);
901		1266
902	/* update rt_now, do magic */	1267	/* update ev_rt_now, do magic */
903	time_update (EV_A);	1268	time_update (EV_A);
904		1269
905	/* queue pending timers and reschedule them */	1270	/* queue pending timers and reschedule them */
906	timers_reify (EV_A); /* relative timers called last */	1271	timers_reify (EV_A); /* relative timers called last */
		1272	#if EV_PERIODICS
907	periodics_reify (EV_A); /* absolute timers called first */	1273	periodics_reify (EV_A); /* absolute timers called first */
		1274	#endif
908		1275
909	/* queue idle watchers unless io or timers are pending */	1276	/* queue idle watchers unless io or timers are pending */
910	if (!pendingcnt)	1277	if (idlecnt && !any_pending (EV_A))
911	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1278	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
912		1279
913	/* queue check watchers, to be executed first */	1280	/* queue check watchers, to be executed first */
914	if (checkcnt)	1281	if (expect_false (checkcnt))
915	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1282	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
916		1283
917	call_pending (EV_A);	1284	call_pending (EV_A);
		1285
		1286	if (expect_false (loop_done))
		1287	break;
918	}	1288	}
919	while (activecnt && !loop_done);
920		1289
921	if (loop_done != 2)	1290	if (loop_done != 2)
922	loop_done = 0;	1291	loop_done = 0;
923	}	1292	}
924		1293
…		…
984	void	1353	void
985	ev_io_start (EV_P_ struct ev_io *w)	1354	ev_io_start (EV_P_ struct ev_io *w)
986	{	1355	{
987	int fd = w->fd;	1356	int fd = w->fd;
988		1357
989	if (ev_is_active (w))	1358	if (expect_false (ev_is_active (w)))
990	return;	1359	return;
991		1360
992	assert (("ev_io_start called with negative fd", fd >= 0));	1361	assert (("ev_io_start called with negative fd", fd >= 0));
993		1362
994	ev_start (EV_A_ (W)w, 1);	1363	ev_start (EV_A_ (W)w, 1);
995	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1364	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
996	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1365	wlist_add ((WL *)&anfds[fd].head, (WL)w);
997		1366
998	fd_change (EV_A_ fd);	1367	fd_change (EV_A_ fd);
999	}	1368	}
1000		1369
1001	void	1370	void
1002	ev_io_stop (EV_P_ struct ev_io *w)	1371	ev_io_stop (EV_P_ struct ev_io *w)
1003	{	1372	{
1004	ev_clear_pending (EV_A_ (W)w);	1373	ev_clear_pending (EV_A_ (W)w);
1005	if (!ev_is_active (w))	1374	if (expect_false (!ev_is_active (w)))
1006	return;	1375	return;
		1376
		1377	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1007		1378
1008	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1379	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1009	ev_stop (EV_A_ (W)w);	1380	ev_stop (EV_A_ (W)w);
1010		1381
1011	fd_change (EV_A_ w->fd);	1382	fd_change (EV_A_ w->fd);
1012	}	1383	}
1013		1384
1014	void	1385	void
1015	ev_timer_start (EV_P_ struct ev_timer *w)	1386	ev_timer_start (EV_P_ struct ev_timer *w)
1016	{	1387	{
1017	if (ev_is_active (w))	1388	if (expect_false (ev_is_active (w)))
1018	return;	1389	return;
1019		1390
1020	w->at += mn_now;	1391	((WT)w)->at += mn_now;
1021		1392
1022	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1393	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1023		1394
1024	ev_start (EV_A_ (W)w, ++timercnt);	1395	ev_start (EV_A_ (W)w, ++timercnt);
1025	array_needsize (timers, timermax, timercnt, );	1396	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1026	timers [timercnt - 1] = w;	1397	timers [timercnt - 1] = w;
1027	upheap ((WT *)timers, timercnt - 1);	1398	upheap ((WT *)timers, timercnt - 1);
		1399
		1400	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1028	}	1401	}
1029		1402
1030	void	1403	void
1031	ev_timer_stop (EV_P_ struct ev_timer *w)	1404	ev_timer_stop (EV_P_ struct ev_timer *w)
1032	{	1405	{
1033	ev_clear_pending (EV_A_ (W)w);	1406	ev_clear_pending (EV_A_ (W)w);
1034	if (!ev_is_active (w))	1407	if (expect_false (!ev_is_active (w)))
1035	return;	1408	return;
1036		1409
		1410	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1411
1037	if (w->active < timercnt--)	1412	if (expect_true (((W)w)->active < timercnt--))
1038	{	1413	{
1039	timers [w->active - 1] = timers [timercnt];	1414	timers [((W)w)->active - 1] = timers [timercnt];
1040	downheap ((WT *)timers, timercnt, w->active - 1);	1415	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1041	}	1416	}
1042		1417
1043	w->at = w->repeat;	1418	((WT)w)->at -= mn_now;
1044		1419
1045	ev_stop (EV_A_ (W)w);	1420	ev_stop (EV_A_ (W)w);
1046	}	1421	}
1047		1422
1048	void	1423	void
…		…
1050	{	1425	{
1051	if (ev_is_active (w))	1426	if (ev_is_active (w))
1052	{	1427	{
1053	if (w->repeat)	1428	if (w->repeat)
1054	{	1429	{
1055	w->at = mn_now + w->repeat;	1430	((WT)w)->at = mn_now + w->repeat;
1056	downheap ((WT *)timers, timercnt, w->active - 1);	1431	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1057	}	1432	}
1058	else	1433	else
1059	ev_timer_stop (EV_A_ w);	1434	ev_timer_stop (EV_A_ w);
1060	}	1435	}
1061	else if (w->repeat)	1436	else if (w->repeat)
		1437	{
		1438	w->at = w->repeat;
1062	ev_timer_start (EV_A_ w);	1439	ev_timer_start (EV_A_ w);
		1440	}
1063	}	1441	}
1064		1442
		1443	#if EV_PERIODICS
1065	void	1444	void
1066	ev_periodic_start (EV_P_ struct ev_periodic *w)	1445	ev_periodic_start (EV_P_ struct ev_periodic *w)
1067	{	1446	{
1068	if (ev_is_active (w))	1447	if (expect_false (ev_is_active (w)))
1069	return;	1448	return;
1070		1449
		1450	if (w->reschedule_cb)
		1451	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1452	else if (w->interval)
		1453	{
1071	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1454	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1072
1073	/* this formula differs from the one in periodic_reify because we do not always round up */	1455	/* this formula differs from the one in periodic_reify because we do not always round up */
1074	if (w->interval)
1075	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1456	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1457	}
1076		1458
1077	ev_start (EV_A_ (W)w, ++periodiccnt);	1459	ev_start (EV_A_ (W)w, ++periodiccnt);
1078	array_needsize (periodics, periodicmax, periodiccnt, );	1460	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1079	periodics [periodiccnt - 1] = w;	1461	periodics [periodiccnt - 1] = w;
1080	upheap ((WT *)periodics, periodiccnt - 1);	1462	upheap ((WT *)periodics, periodiccnt - 1);
		1463
		1464	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1081	}	1465	}
1082		1466
1083	void	1467	void
1084	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1468	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1085	{	1469	{
1086	ev_clear_pending (EV_A_ (W)w);	1470	ev_clear_pending (EV_A_ (W)w);
1087	if (!ev_is_active (w))	1471	if (expect_false (!ev_is_active (w)))
1088	return;	1472	return;
1089		1473
		1474	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1475
1090	if (w->active < periodiccnt--)	1476	if (expect_true (((W)w)->active < periodiccnt--))
1091	{	1477	{
1092	periodics [w->active - 1] = periodics [periodiccnt];	1478	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1093	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1479	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1094	}	1480	}
1095		1481
		1482	ev_stop (EV_A_ (W)w);
		1483	}
		1484
		1485	void
		1486	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1487	{
		1488	/* TODO: use adjustheap and recalculation */
		1489	ev_periodic_stop (EV_A_ w);
		1490	ev_periodic_start (EV_A_ w);
		1491	}
		1492	#endif
		1493
		1494	void
		1495	ev_idle_start (EV_P_ struct ev_idle *w)
		1496	{
		1497	if (expect_false (ev_is_active (w)))
		1498	return;
		1499
		1500	ev_start (EV_A_ (W)w, ++idlecnt);
		1501	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1502	idles [idlecnt - 1] = w;
		1503	}
		1504
		1505	void
		1506	ev_idle_stop (EV_P_ struct ev_idle *w)
		1507	{
		1508	ev_clear_pending (EV_A_ (W)w);
		1509	if (expect_false (!ev_is_active (w)))
		1510	return;
		1511
		1512	idles [((W)w)->active - 1] = idles [--idlecnt];
		1513	ev_stop (EV_A_ (W)w);
		1514	}
		1515
		1516	void
		1517	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1518	{
		1519	if (expect_false (ev_is_active (w)))
		1520	return;
		1521
		1522	ev_start (EV_A_ (W)w, ++preparecnt);
		1523	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1524	prepares [preparecnt - 1] = w;
		1525	}
		1526
		1527	void
		1528	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1529	{
		1530	ev_clear_pending (EV_A_ (W)w);
		1531	if (expect_false (!ev_is_active (w)))
		1532	return;
		1533
		1534	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1535	ev_stop (EV_A_ (W)w);
		1536	}
		1537
		1538	void
		1539	ev_check_start (EV_P_ struct ev_check *w)
		1540	{
		1541	if (expect_false (ev_is_active (w)))
		1542	return;
		1543
		1544	ev_start (EV_A_ (W)w, ++checkcnt);
		1545	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1546	checks [checkcnt - 1] = w;
		1547	}
		1548
		1549	void
		1550	ev_check_stop (EV_P_ struct ev_check *w)
		1551	{
		1552	ev_clear_pending (EV_A_ (W)w);
		1553	if (expect_false (!ev_is_active (w)))
		1554	return;
		1555
		1556	checks [((W)w)->active - 1] = checks [--checkcnt];
1096	ev_stop (EV_A_ (W)w);	1557	ev_stop (EV_A_ (W)w);
1097	}	1558	}
1098		1559
1099	#ifndef SA_RESTART	1560	#ifndef SA_RESTART
1100	# define SA_RESTART 0	1561	# define SA_RESTART 0
1101	#endif	1562	#endif
1102		1563
1103	void	1564	void
1104	ev_signal_start (EV_P_ struct ev_signal *w)	1565	ev_signal_start (EV_P_ struct ev_signal *w)
1105	{	1566	{
		1567	#if EV_MULTIPLICITY
		1568	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1569	#endif
1106	if (ev_is_active (w))	1570	if (expect_false (ev_is_active (w)))
1107	return;	1571	return;
1108		1572
1109	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1573	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1110		1574
1111	ev_start (EV_A_ (W)w, 1);	1575	ev_start (EV_A_ (W)w, 1);
1112	array_needsize (signals, signalmax, w->signum, signals_init);	1576	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1113	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1577	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1114		1578
1115	if (!w->next)	1579	if (!((WL)w)->next)
1116	{	1580	{
		1581	#if _WIN32
		1582	signal (w->signum, sighandler);
		1583	#else
1117	struct sigaction sa;	1584	struct sigaction sa;
1118	sa.sa_handler = sighandler;	1585	sa.sa_handler = sighandler;
1119	sigfillset (&sa.sa_mask);	1586	sigfillset (&sa.sa_mask);
1120	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1587	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1121	sigaction (w->signum, &sa, 0);	1588	sigaction (w->signum, &sa, 0);
		1589	#endif
1122	}	1590	}
1123	}	1591	}
1124		1592
1125	void	1593	void
1126	ev_signal_stop (EV_P_ struct ev_signal *w)	1594	ev_signal_stop (EV_P_ struct ev_signal *w)
1127	{	1595	{
1128	ev_clear_pending (EV_A_ (W)w);	1596	ev_clear_pending (EV_A_ (W)w);
1129	if (!ev_is_active (w))	1597	if (expect_false (!ev_is_active (w)))
1130	return;	1598	return;
1131		1599
1132	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1600	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1133	ev_stop (EV_A_ (W)w);	1601	ev_stop (EV_A_ (W)w);
1134		1602
1135	if (!signals [w->signum - 1].head)	1603	if (!signals [w->signum - 1].head)
1136	signal (w->signum, SIG_DFL);	1604	signal (w->signum, SIG_DFL);
1137	}	1605	}
1138		1606
1139	void	1607	void
1140	ev_idle_start (EV_P_ struct ev_idle *w)
1141	{
1142	if (ev_is_active (w))
1143	return;
1144
1145	ev_start (EV_A_ (W)w, ++idlecnt);
1146	array_needsize (idles, idlemax, idlecnt, );
1147	idles [idlecnt - 1] = w;
1148	}
1149
1150	void
1151	ev_idle_stop (EV_P_ struct ev_idle *w)
1152	{
1153	ev_clear_pending (EV_A_ (W)w);
1154	if (ev_is_active (w))
1155	return;
1156
1157	idles [w->active - 1] = idles [--idlecnt];
1158	ev_stop (EV_A_ (W)w);
1159	}
1160
1161	void
1162	ev_prepare_start (EV_P_ struct ev_prepare *w)
1163	{
1164	if (ev_is_active (w))
1165	return;
1166
1167	ev_start (EV_A_ (W)w, ++preparecnt);
1168	array_needsize (prepares, preparemax, preparecnt, );
1169	prepares [preparecnt - 1] = w;
1170	}
1171
1172	void
1173	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1174	{
1175	ev_clear_pending (EV_A_ (W)w);
1176	if (ev_is_active (w))
1177	return;
1178
1179	prepares [w->active - 1] = prepares [--preparecnt];
1180	ev_stop (EV_A_ (W)w);
1181	}
1182
1183	void
1184	ev_check_start (EV_P_ struct ev_check *w)
1185	{
1186	if (ev_is_active (w))
1187	return;
1188
1189	ev_start (EV_A_ (W)w, ++checkcnt);
1190	array_needsize (checks, checkmax, checkcnt, );
1191	checks [checkcnt - 1] = w;
1192	}
1193
1194	void
1195	ev_check_stop (EV_P_ struct ev_check *w)
1196	{
1197	ev_clear_pending (EV_A_ (W)w);
1198	if (ev_is_active (w))
1199	return;
1200
1201	checks [w->active - 1] = checks [--checkcnt];
1202	ev_stop (EV_A_ (W)w);
1203	}
1204
1205	void
1206	ev_child_start (EV_P_ struct ev_child *w)	1608	ev_child_start (EV_P_ struct ev_child *w)
1207	{	1609	{
		1610	#if EV_MULTIPLICITY
		1611	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1612	#endif
1208	if (ev_is_active (w))	1613	if (expect_false (ev_is_active (w)))
1209	return;	1614	return;
1210		1615
1211	ev_start (EV_A_ (W)w, 1);	1616	ev_start (EV_A_ (W)w, 1);
1212	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1617	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1213	}	1618	}
1214		1619
1215	void	1620	void
1216	ev_child_stop (EV_P_ struct ev_child *w)	1621	ev_child_stop (EV_P_ struct ev_child *w)
1217	{	1622	{
1218	ev_clear_pending (EV_A_ (W)w);	1623	ev_clear_pending (EV_A_ (W)w);
1219	if (ev_is_active (w))	1624	if (expect_false (!ev_is_active (w)))
1220	return;	1625	return;
1221		1626
1222	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1627	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1223	ev_stop (EV_A_ (W)w);	1628	ev_stop (EV_A_ (W)w);
1224	}	1629	}
…		…
1239	void (*cb)(int revents, void *arg) = once->cb;	1644	void (*cb)(int revents, void *arg) = once->cb;
1240	void *arg = once->arg;	1645	void *arg = once->arg;
1241		1646
1242	ev_io_stop (EV_A_ &once->io);	1647	ev_io_stop (EV_A_ &once->io);
1243	ev_timer_stop (EV_A_ &once->to);	1648	ev_timer_stop (EV_A_ &once->to);
1244	free (once);	1649	ev_free (once);
1245		1650
1246	cb (revents, arg);	1651	cb (revents, arg);
1247	}	1652	}
1248		1653
1249	static void	1654	static void
…		…
1259	}	1664	}
1260		1665
1261	void	1666	void
1262	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1667	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1263	{	1668	{
1264	struct ev_once *once = malloc (sizeof (struct ev_once));	1669	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1265		1670
1266	if (!once)	1671	if (expect_false (!once))
		1672	{
1267	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1673	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1268	else	1674	return;
1269	{	1675	}
		1676
1270	once->cb = cb;	1677	once->cb = cb;
1271	once->arg = arg;	1678	once->arg = arg;
1272		1679
1273	ev_watcher_init (&once->io, once_cb_io);	1680	ev_init (&once->io, once_cb_io);
1274	if (fd >= 0)	1681	if (fd >= 0)
1275	{	1682	{
1276	ev_io_set (&once->io, fd, events);	1683	ev_io_set (&once->io, fd, events);
1277	ev_io_start (EV_A_ &once->io);	1684	ev_io_start (EV_A_ &once->io);
1278	}	1685	}
1279		1686
1280	ev_watcher_init (&once->to, once_cb_to);	1687	ev_init (&once->to, once_cb_to);
1281	if (timeout >= 0.)	1688	if (timeout >= 0.)
1282	{	1689	{
1283	ev_timer_set (&once->to, timeout, 0.);	1690	ev_timer_set (&once->to, timeout, 0.);
1284	ev_timer_start (EV_A_ &once->to);	1691	ev_timer_start (EV_A_ &once->to);
1285	}
1286	}
1287	}
1288
1289	/*****************************************************************************/
1290
1291	#if 0
1292
1293	struct ev_io wio;
1294
1295	static void
1296	sin_cb (struct ev_io *w, int revents)
1297	{
1298	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1299	}
1300
1301	static void
1302	ocb (struct ev_timer *w, int revents)
1303	{
1304	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1305	ev_timer_stop (w);
1306	ev_timer_start (w);
1307	}
1308
1309	static void
1310	scb (struct ev_signal *w, int revents)
1311	{
1312	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1313	ev_io_stop (&wio);
1314	ev_io_start (&wio);
1315	}
1316
1317	static void
1318	gcb (struct ev_signal *w, int revents)
1319	{
1320	fprintf (stderr, "generic %x\n", revents);
1321
1322	}
1323
1324	int main (void)
1325	{
1326	ev_init (0);
1327
1328	ev_io_init (&wio, sin_cb, 0, EV_READ);
1329	ev_io_start (&wio);
1330
1331	struct ev_timer t[10000];
1332
1333	#if 0
1334	int i;
1335	for (i = 0; i < 10000; ++i)
1336	{	1692	}
1337	struct ev_timer *w = t + i;
1338	ev_watcher_init (w, ocb, i);
1339	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1340	ev_timer_start (w);
1341	if (drand48 () < 0.5)
1342	ev_timer_stop (w);
1343	}
1344	#endif
1345
1346	struct ev_timer t1;
1347	ev_timer_init (&t1, ocb, 5, 10);
1348	ev_timer_start (&t1);
1349
1350	struct ev_signal sig;
1351	ev_signal_init (&sig, scb, SIGQUIT);
1352	ev_signal_start (&sig);
1353
1354	struct ev_check cw;
1355	ev_check_init (&cw, gcb);
1356	ev_check_start (&cw);
1357
1358	struct ev_idle iw;
1359	ev_idle_init (&iw, gcb);
1360	ev_idle_start (&iw);
1361
1362	ev_loop (0);
1363
1364	return 0;
1365	}	1693	}
1366		1694
		1695	#ifdef __cplusplus
		1696	}
1367	#endif	1697	#endif
1368		1698
1369
1370
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