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Comparing libev/ev.c (file contents):
Revision 1.80 by root, Fri Nov 9 15:30:59 2007 UTC vs.
Revision 1.159 by root, Sat Dec 1 19:48:36 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
		97	# endif
		98
		99	# ifndef EV_USE_INOTIFY
		100	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		101	# define EV_USE_INOTIFY 1
		102	# else
		103	# define EV_USE_INOTIFY 0
		104	# endif
53	# endif	105	# endif
54		106
55	#endif	107	#endif
56		108
57	#include <math.h>	109	#include <math.h>
…		…
66	#include <sys/types.h>	118	#include <sys/types.h>
67	#include <time.h>	119	#include <time.h>
68		120
69	#include <signal.h>	121	#include <signal.h>
70		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
71	#ifndef WIN32	129	#ifndef _WIN32
72	# include <unistd.h>
73	# include <sys/time.h>	130	# include <sys/time.h>
74	# include <sys/wait.h>	131	# include <sys/wait.h>
		132	# include <unistd.h>
		133	#else
		134	# define WIN32_LEAN_AND_MEAN
		135	# include <windows.h>
		136	# ifndef EV_SELECT_IS_WINSOCKET
		137	# define EV_SELECT_IS_WINSOCKET 1
75	#endif	138	# endif
		139	#endif
		140
76	/**/	141	/**/
77		142
78	#ifndef EV_USE_MONOTONIC	143	#ifndef EV_USE_MONOTONIC
79	# define EV_USE_MONOTONIC 1	144	# define EV_USE_MONOTONIC 0
		145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
80	#endif	149	#endif
81		150
82	#ifndef EV_USE_SELECT	151	#ifndef EV_USE_SELECT
83	# define EV_USE_SELECT 1	152	# define EV_USE_SELECT 1
84	#endif	153	#endif
85		154
86	#ifndef EV_USE_POLL	155	#ifndef EV_USE_POLL
87	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	156	# ifdef _WIN32
		157	# define EV_USE_POLL 0
		158	# else
		159	# define EV_USE_POLL 1
		160	# endif
88	#endif	161	#endif
89		162
90	#ifndef EV_USE_EPOLL	163	#ifndef EV_USE_EPOLL
91	# define EV_USE_EPOLL 0	164	# define EV_USE_EPOLL 0
92	#endif	165	#endif
93		166
94	#ifndef EV_USE_KQUEUE	167	#ifndef EV_USE_KQUEUE
95	# define EV_USE_KQUEUE 0	168	# define EV_USE_KQUEUE 0
96	#endif	169	#endif
97		170
		171	#ifndef EV_USE_PORT
		172	# define EV_USE_PORT 0
		173	#endif
		174
98	#ifndef EV_USE_WIN32	175	#ifndef EV_USE_INOTIFY
99	# ifdef WIN32	176	# define EV_USE_INOTIFY 0
100	# define EV_USE_WIN32 0 /* it does not exist, use select */	177	#endif
101	# undef EV_USE_SELECT	178
102	# define EV_USE_SELECT 1	179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
103	# else	182	# else
104	# define EV_USE_WIN32 0	183	# define EV_PID_HASHSIZE 16
105	# endif	184	# endif
106	#endif	185	#endif
107		186
108	#ifndef EV_USE_REALTIME	187	#ifndef EV_INOTIFY_HASHSIZE
109	# define EV_USE_REALTIME 1	188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
110	#endif	193	#endif
111		194
112	/**/	195	/**/
113		196
114	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
…		…
119	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
120	# undef EV_USE_REALTIME	203	# undef EV_USE_REALTIME
121	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
122	#endif	205	#endif
123		206
		207	#if EV_SELECT_IS_WINSOCKET
		208	# include <winsock.h>
		209	#endif
		210
		211	#if !EV_STAT_ENABLE
		212	# define EV_USE_INOTIFY 0
		213	#endif
		214
		215	#if EV_USE_INOTIFY
		216	# include <sys/inotify.h>
		217	#endif
		218
124	/**/	219	/**/
125		220
126	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	221	#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) */	222	#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 */
129	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	223	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
130
131	#include "ev.h"
132		224
133	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
134	# define expect(expr,value) __builtin_expect ((expr),(value))	226	# define expect(expr,value) __builtin_expect ((expr),(value))
		227	# define inline_size static inline /* inline for codesize */
		228	# if EV_MINIMAL
135	# define inline inline	229	# define noinline __attribute__ ((noinline))
		230	# define inline_speed static noinline
		231	# else
		232	# define noinline
		233	# define inline_speed static inline
		234	# endif
136	#else	235	#else
137	# define expect(expr,value) (expr)	236	# define expect(expr,value) (expr)
		237	# define inline_speed static
138	# define inline static	238	# define inline_size static
		239	# define noinline
139	#endif	240	#endif
140		241
141	#define expect_false(expr) expect ((expr) != 0, 0)	242	#define expect_false(expr) expect ((expr) != 0, 0)
142	#define expect_true(expr) expect ((expr) != 0, 1)	243	#define expect_true(expr) expect ((expr) != 0, 1)
143		244
144	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
145	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	246	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
146		247
		248	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		249	#define EMPTY2(a,b) /* used to suppress some warnings */
		250
147	typedef struct ev_watcher *W;	251	typedef ev_watcher *W;
148	typedef struct ev_watcher_list *WL;	252	typedef ev_watcher_list *WL;
149	typedef struct ev_watcher_time *WT;	253	typedef ev_watcher_time *WT;
150		254
151	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
152		256
		257	#ifdef _WIN32
153	#include "ev_win32.c"	258	# include "ev_win32.c"
		259	#endif
154		260
155	/*****************************************************************************/	261	/*****************************************************************************/
156		262
157	static void (*syserr_cb)(const char *msg);	263	static void (*syserr_cb)(const char *msg);
158		264
		265	void
159	void ev_set_syserr_cb (void (*cb)(const char *msg))	266	ev_set_syserr_cb (void (*cb)(const char *msg))
160	{	267	{
161	syserr_cb = cb;	268	syserr_cb = cb;
162	}	269	}
163		270
164	static void	271	static void noinline
165	syserr (const char *msg)	272	syserr (const char *msg)
166	{	273	{
167	if (!msg)	274	if (!msg)
168	msg = "(libev) system error";	275	msg = "(libev) system error";
169		276
…		…
176	}	283	}
177	}	284	}
178		285
179	static void *(*alloc)(void *ptr, long size);	286	static void *(*alloc)(void *ptr, long size);
180		287
		288	void
181	void ev_set_allocator (void *(*cb)(void *ptr, long size))	289	ev_set_allocator (void *(*cb)(void *ptr, long size))
182	{	290	{
183	alloc = cb;	291	alloc = cb;
184	}	292	}
185		293
186	static void *	294	inline_speed void *
187	ev_realloc (void *ptr, long size)	295	ev_realloc (void *ptr, long size)
188	{	296	{
189	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	297	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
190		298
191	if (!ptr && size)	299	if (!ptr && size)
…		…
205	typedef struct	313	typedef struct
206	{	314	{
207	WL head;	315	WL head;
208	unsigned char events;	316	unsigned char events;
209	unsigned char reify;	317	unsigned char reify;
		318	#if EV_SELECT_IS_WINSOCKET
		319	SOCKET handle;
		320	#endif
210	} ANFD;	321	} ANFD;
211		322
212	typedef struct	323	typedef struct
213	{	324	{
214	W w;	325	W w;
215	int events;	326	int events;
216	} ANPENDING;	327	} ANPENDING;
217		328
		329	#if EV_USE_INOTIFY
		330	typedef struct
		331	{
		332	WL head;
		333	} ANFS;
		334	#endif
		335
218	#if EV_MULTIPLICITY	336	#if EV_MULTIPLICITY
219		337
220	struct ev_loop	338	struct ev_loop
221	{	339	{
		340	ev_tstamp ev_rt_now;
		341	#define ev_rt_now ((loop)->ev_rt_now)
222	#define VAR(name,decl) decl;	342	#define VAR(name,decl) decl;
223	#include "ev_vars.h"	343	#include "ev_vars.h"
224	#undef VAR	344	#undef VAR
225	};	345	};
226	#include "ev_wrap.h"	346	#include "ev_wrap.h"
227		347
228	struct ev_loop default_loop_struct;	348	static struct ev_loop default_loop_struct;
229	static struct ev_loop *default_loop;	349	struct ev_loop *ev_default_loop_ptr;
230		350
231	#else	351	#else
232		352
		353	ev_tstamp ev_rt_now;
233	#define VAR(name,decl) static decl;	354	#define VAR(name,decl) static decl;
234	#include "ev_vars.h"	355	#include "ev_vars.h"
235	#undef VAR	356	#undef VAR
236		357
237	static int default_loop;	358	static int ev_default_loop_ptr;
238		359
239	#endif	360	#endif
240		361
241	/*****************************************************************************/	362	/*****************************************************************************/
242		363
243	inline ev_tstamp	364	ev_tstamp
244	ev_time (void)	365	ev_time (void)
245	{	366	{
246	#if EV_USE_REALTIME	367	#if EV_USE_REALTIME
247	struct timespec ts;	368	struct timespec ts;
248	clock_gettime (CLOCK_REALTIME, &ts);	369	clock_gettime (CLOCK_REALTIME, &ts);
…		…
252	gettimeofday (&tv, 0);	373	gettimeofday (&tv, 0);
253	return tv.tv_sec + tv.tv_usec * 1e-6;	374	return tv.tv_sec + tv.tv_usec * 1e-6;
254	#endif	375	#endif
255	}	376	}
256		377
257	inline ev_tstamp	378	ev_tstamp inline_size
258	get_clock (void)	379	get_clock (void)
259	{	380	{
260	#if EV_USE_MONOTONIC	381	#if EV_USE_MONOTONIC
261	if (expect_true (have_monotonic))	382	if (expect_true (have_monotonic))
262	{	383	{
…		…
267	#endif	388	#endif
268		389
269	return ev_time ();	390	return ev_time ();
270	}	391	}
271		392
		393	#if EV_MULTIPLICITY
272	ev_tstamp	394	ev_tstamp
273	ev_now (EV_P)	395	ev_now (EV_P)
274	{	396	{
275	return rt_now;	397	return ev_rt_now;
276	}	398	}
		399	#endif
277		400
278	#define array_roundsize(type,n) ((n) | 4 & ~3)	401	#define array_roundsize(type,n) (((n) | 4) & ~3)
279		402
280	#define array_needsize(type,base,cur,cnt,init) \	403	#define array_needsize(type,base,cur,cnt,init) \
281	if (expect_false ((cnt) > cur)) \	404	if (expect_false ((cnt) > cur)) \
282	{ \	405	{ \
283	int newcnt = cur; \	406	int newcnt = cur; \
…		…
298	stem ## max = array_roundsize (stem ## cnt >> 1); \	421	stem ## max = array_roundsize (stem ## cnt >> 1); \
299	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	422	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
300	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	423	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
301	}	424	}
302		425
303	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
304	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
305	#define array_free_microshit(stem) \
306	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
307
308	#define array_free(stem, idx) \	426	#define array_free(stem, idx) \
309	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	427	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
310		428
311	/*****************************************************************************/	429	/*****************************************************************************/
312		430
313	static void	431	void noinline
		432	ev_feed_event (EV_P_ void *w, int revents)
		433	{
		434	W w_ = (W)w;
		435
		436	if (expect_false (w_->pending))
		437	{
		438	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		439	return;
		440	}
		441
		442	w_->pending = ++pendingcnt [ABSPRI (w_)];
		443	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		444	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		445	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		446	}
		447
		448	void inline_size
		449	queue_events (EV_P_ W *events, int eventcnt, int type)
		450	{
		451	int i;
		452
		453	for (i = 0; i < eventcnt; ++i)
		454	ev_feed_event (EV_A_ events [i], type);
		455	}
		456
		457	/*****************************************************************************/
		458
		459	void inline_size
314	anfds_init (ANFD *base, int count)	460	anfds_init (ANFD *base, int count)
315	{	461	{
316	while (count--)	462	while (count--)
317	{	463	{
318	base->head = 0;	464	base->head = 0;
…		…
321		467
322	++base;	468	++base;
323	}	469	}
324	}	470	}
325		471
326	void	472	void inline_speed
327	ev_feed_event (EV_P_ void *w, int revents)
328	{
329	W w_ = (W)w;
330
331	if (w_->pending)
332	{
333	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
334	return;
335	}
336
337	w_->pending = ++pendingcnt [ABSPRI (w_)];
338	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
339	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
340	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
341	}
342
343	static void
344	queue_events (EV_P_ W *events, int eventcnt, int type)
345	{
346	int i;
347
348	for (i = 0; i < eventcnt; ++i)
349	ev_feed_event (EV_A_ events [i], type);
350	}
351
352	inline void
353	fd_event (EV_P_ int fd, int revents)	473	fd_event (EV_P_ int fd, int revents)
354	{	474	{
355	ANFD *anfd = anfds + fd;	475	ANFD *anfd = anfds + fd;
356	struct ev_io *w;	476	ev_io *w;
357		477
358	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	478	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
359	{	479	{
360	int ev = w->events & revents;	480	int ev = w->events & revents;
361		481
362	if (ev)	482	if (ev)
363	ev_feed_event (EV_A_ (W)w, ev);	483	ev_feed_event (EV_A_ (W)w, ev);
…		…
368	ev_feed_fd_event (EV_P_ int fd, int revents)	488	ev_feed_fd_event (EV_P_ int fd, int revents)
369	{	489	{
370	fd_event (EV_A_ fd, revents);	490	fd_event (EV_A_ fd, revents);
371	}	491	}
372		492
373	/*****************************************************************************/	493	void inline_size
374
375	static void
376	fd_reify (EV_P)	494	fd_reify (EV_P)
377	{	495	{
378	int i;	496	int i;
379		497
380	for (i = 0; i < fdchangecnt; ++i)	498	for (i = 0; i < fdchangecnt; ++i)
381	{	499	{
382	int fd = fdchanges [i];	500	int fd = fdchanges [i];
383	ANFD *anfd = anfds + fd;	501	ANFD *anfd = anfds + fd;
384	struct ev_io *w;	502	ev_io *w;
385		503
386	int events = 0;	504	int events = 0;
387		505
388	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	506	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
389	events |= w->events;	507	events |= w->events;
390		508
		509	#if EV_SELECT_IS_WINSOCKET
		510	if (events)
		511	{
		512	unsigned long argp;
		513	anfd->handle = _get_osfhandle (fd);
		514	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		515	}
		516	#endif
		517
391	anfd->reify = 0;	518	anfd->reify = 0;
392		519
393	method_modify (EV_A_ fd, anfd->events, events);	520	backend_modify (EV_A_ fd, anfd->events, events);
394	anfd->events = events;	521	anfd->events = events;
395	}	522	}
396		523
397	fdchangecnt = 0;	524	fdchangecnt = 0;
398	}	525	}
399		526
400	static void	527	void inline_size
401	fd_change (EV_P_ int fd)	528	fd_change (EV_P_ int fd)
402	{	529	{
403	if (anfds [fd].reify)	530	if (expect_false (anfds [fd].reify))
404	return;	531	return;
405		532
406	anfds [fd].reify = 1;	533	anfds [fd].reify = 1;
407		534
408	++fdchangecnt;	535	++fdchangecnt;
409	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	536	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
410	fdchanges [fdchangecnt - 1] = fd;	537	fdchanges [fdchangecnt - 1] = fd;
411	}	538	}
412		539
413	static void	540	void inline_speed
414	fd_kill (EV_P_ int fd)	541	fd_kill (EV_P_ int fd)
415	{	542	{
416	struct ev_io *w;	543	ev_io *w;
417		544
418	while ((w = (struct ev_io *)anfds [fd].head))	545	while ((w = (ev_io *)anfds [fd].head))
419	{	546	{
420	ev_io_stop (EV_A_ w);	547	ev_io_stop (EV_A_ w);
421	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	548	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
422	}	549	}
423	}	550	}
424		551
425	static int	552	int inline_size
426	fd_valid (int fd)	553	fd_valid (int fd)
427	{	554	{
428	#ifdef WIN32	555	#ifdef _WIN32
429	return !!win32_get_osfhandle (fd);	556	return _get_osfhandle (fd) != -1;
430	#else	557	#else
431	return fcntl (fd, F_GETFD) != -1;	558	return fcntl (fd, F_GETFD) != -1;
432	#endif	559	#endif
433	}	560	}
434		561
435	/* called on EBADF to verify fds */	562	/* called on EBADF to verify fds */
436	static void	563	static void noinline
437	fd_ebadf (EV_P)	564	fd_ebadf (EV_P)
438	{	565	{
439	int fd;	566	int fd;
440		567
441	for (fd = 0; fd < anfdmax; ++fd)	568	for (fd = 0; fd < anfdmax; ++fd)
…		…
443	if (!fd_valid (fd) == -1 && errno == EBADF)	570	if (!fd_valid (fd) == -1 && errno == EBADF)
444	fd_kill (EV_A_ fd);	571	fd_kill (EV_A_ fd);
445	}	572	}
446		573
447	/* called on ENOMEM in select/poll to kill some fds and retry */	574	/* called on ENOMEM in select/poll to kill some fds and retry */
448	static void	575	static void noinline
449	fd_enomem (EV_P)	576	fd_enomem (EV_P)
450	{	577	{
451	int fd;	578	int fd;
452		579
453	for (fd = anfdmax; fd--; )	580	for (fd = anfdmax; fd--; )
…		…
456	fd_kill (EV_A_ fd);	583	fd_kill (EV_A_ fd);
457	return;	584	return;
458	}	585	}
459	}	586	}
460		587
461	/* usually called after fork if method needs to re-arm all fds from scratch */	588	/* usually called after fork if backend needs to re-arm all fds from scratch */
462	static void	589	static void noinline
463	fd_rearm_all (EV_P)	590	fd_rearm_all (EV_P)
464	{	591	{
465	int fd;	592	int fd;
466		593
467	/* this should be highly optimised to not do anything but set a flag */
468	for (fd = 0; fd < anfdmax; ++fd)	594	for (fd = 0; fd < anfdmax; ++fd)
469	if (anfds [fd].events)	595	if (anfds [fd].events)
470	{	596	{
471	anfds [fd].events = 0;	597	anfds [fd].events = 0;
472	fd_change (EV_A_ fd);	598	fd_change (EV_A_ fd);
473	}	599	}
474	}	600	}
475		601
476	/*****************************************************************************/	602	/*****************************************************************************/
477		603
478	static void	604	void inline_speed
479	upheap (WT *heap, int k)	605	upheap (WT *heap, int k)
480	{	606	{
481	WT w = heap [k];	607	WT w = heap [k];
482		608
483	while (k && heap [k >> 1]->at > w->at)	609	while (k && heap [k >> 1]->at > w->at)
…		…
490	heap [k] = w;	616	heap [k] = w;
491	((W)heap [k])->active = k + 1;	617	((W)heap [k])->active = k + 1;
492		618
493	}	619	}
494		620
495	static void	621	void inline_speed
496	downheap (WT *heap, int N, int k)	622	downheap (WT *heap, int N, int k)
497	{	623	{
498	WT w = heap [k];	624	WT w = heap [k];
499		625
500	while (k < (N >> 1))	626	while (k < (N >> 1))
…		…
514		640
515	heap [k] = w;	641	heap [k] = w;
516	((W)heap [k])->active = k + 1;	642	((W)heap [k])->active = k + 1;
517	}	643	}
518		644
		645	void inline_size
		646	adjustheap (WT *heap, int N, int k)
		647	{
		648	upheap (heap, k);
		649	downheap (heap, N, k);
		650	}
		651
519	/*****************************************************************************/	652	/*****************************************************************************/
520		653
521	typedef struct	654	typedef struct
522	{	655	{
523	WL head;	656	WL head;
…		…
527	static ANSIG *signals;	660	static ANSIG *signals;
528	static int signalmax;	661	static int signalmax;
529		662
530	static int sigpipe [2];	663	static int sigpipe [2];
531	static sig_atomic_t volatile gotsig;	664	static sig_atomic_t volatile gotsig;
532	static struct ev_io sigev;	665	static ev_io sigev;
533		666
534	static void	667	void inline_size
535	signals_init (ANSIG *base, int count)	668	signals_init (ANSIG *base, int count)
536	{	669	{
537	while (count--)	670	while (count--)
538	{	671	{
539	base->head = 0;	672	base->head = 0;
…		…
544	}	677	}
545		678
546	static void	679	static void
547	sighandler (int signum)	680	sighandler (int signum)
548	{	681	{
549	#if WIN32	682	#if _WIN32
550	signal (signum, sighandler);	683	signal (signum, sighandler);
551	#endif	684	#endif
552		685
553	signals [signum - 1].gotsig = 1;	686	signals [signum - 1].gotsig = 1;
554		687
555	if (!gotsig)	688	if (!gotsig)
556	{	689	{
557	int old_errno = errno;	690	int old_errno = errno;
558	gotsig = 1;	691	gotsig = 1;
559	#ifdef WIN32
560	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
561	#else
562	write (sigpipe [1], &signum, 1);	692	write (sigpipe [1], &signum, 1);
563	#endif
564	errno = old_errno;	693	errno = old_errno;
565	}	694	}
566	}	695	}
567		696
568	void	697	void noinline
569	ev_feed_signal_event (EV_P_ int signum)	698	ev_feed_signal_event (EV_P_ int signum)
570	{	699	{
571	WL w;	700	WL w;
572		701
573	#if EV_MULTIPLICITY	702	#if EV_MULTIPLICITY
574	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	703	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
575	#endif	704	#endif
576		705
577	--signum;	706	--signum;
578		707
579	if (signum < 0 || signum >= signalmax)	708	if (signum < 0 || signum >= signalmax)
…		…
584	for (w = signals [signum].head; w; w = w->next)	713	for (w = signals [signum].head; w; w = w->next)
585	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	714	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
586	}	715	}
587		716
588	static void	717	static void
589	sigcb (EV_P_ struct ev_io *iow, int revents)	718	sigcb (EV_P_ ev_io *iow, int revents)
590	{	719	{
591	int signum;	720	int signum;
592		721
593	#ifdef WIN32
594	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
595	#else
596	read (sigpipe [0], &revents, 1);	722	read (sigpipe [0], &revents, 1);
597	#endif
598	gotsig = 0;	723	gotsig = 0;
599		724
600	for (signum = signalmax; signum--; )	725	for (signum = signalmax; signum--; )
601	if (signals [signum].gotsig)	726	if (signals [signum].gotsig)
602	ev_feed_signal_event (EV_A_ signum + 1);	727	ev_feed_signal_event (EV_A_ signum + 1);
603	}	728	}
604		729
605	static void	730	void inline_size
		731	fd_intern (int fd)
		732	{
		733	#ifdef _WIN32
		734	int arg = 1;
		735	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		736	#else
		737	fcntl (fd, F_SETFD, FD_CLOEXEC);
		738	fcntl (fd, F_SETFL, O_NONBLOCK);
		739	#endif
		740	}
		741
		742	static void noinline
606	siginit (EV_P)	743	siginit (EV_P)
607	{	744	{
608	#ifndef WIN32	745	fd_intern (sigpipe [0]);
609	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	746	fd_intern (sigpipe [1]);
610	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
611
612	/* rather than sort out wether we really need nb, set it */
613	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
614	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
615	#endif
616		747
617	ev_io_set (&sigev, sigpipe [0], EV_READ);	748	ev_io_set (&sigev, sigpipe [0], EV_READ);
618	ev_io_start (EV_A_ &sigev);	749	ev_io_start (EV_A_ &sigev);
619	ev_unref (EV_A); /* child watcher should not keep loop alive */	750	ev_unref (EV_A); /* child watcher should not keep loop alive */
620	}	751	}
621		752
622	/*****************************************************************************/	753	/*****************************************************************************/
623		754
624	static struct ev_child *childs [PID_HASHSIZE];	755	static ev_child *childs [EV_PID_HASHSIZE];
625		756
626	#ifndef WIN32	757	#ifndef _WIN32
627		758
628	static struct ev_signal childev;	759	static ev_signal childev;
629		760
630	#ifndef WCONTINUED	761	void inline_speed
631	# define WCONTINUED 0
632	#endif
633
634	static void
635	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	762	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
636	{	763	{
637	struct ev_child *w;	764	ev_child *w;
638		765
639	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	766	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
640	if (w->pid == pid || !w->pid)	767	if (w->pid == pid || !w->pid)
641	{	768	{
642	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	769	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
643	w->rpid = pid;	770	w->rpid = pid;
644	w->rstatus = status;	771	w->rstatus = status;
645	ev_feed_event (EV_A_ (W)w, EV_CHILD);	772	ev_feed_event (EV_A_ (W)w, EV_CHILD);
646	}	773	}
647	}	774	}
648		775
		776	#ifndef WCONTINUED
		777	# define WCONTINUED 0
		778	#endif
		779
649	static void	780	static void
650	childcb (EV_P_ struct ev_signal *sw, int revents)	781	childcb (EV_P_ ev_signal *sw, int revents)
651	{	782	{
652	int pid, status;	783	int pid, status;
653		784
		785	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
654	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	786	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
655	{	787	if (!WCONTINUED
		788	|| errno != EINVAL
		789	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		790	return;
		791
656	/* make sure we are called again until all childs have been reaped */	792	/* make sure we are called again until all childs have been reaped */
		793	/* we need to do it this way so that the callback gets called before we continue */
657	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	794	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
658		795
659	child_reap (EV_A_ sw, pid, pid, status);	796	child_reap (EV_A_ sw, pid, pid, status);
		797	if (EV_PID_HASHSIZE > 1)
660	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	798	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
661	}
662	}	799	}
663		800
664	#endif	801	#endif
665		802
666	/*****************************************************************************/	803	/*****************************************************************************/
667		804
		805	#if EV_USE_PORT
		806	# include "ev_port.c"
		807	#endif
668	#if EV_USE_KQUEUE	808	#if EV_USE_KQUEUE
669	# include "ev_kqueue.c"	809	# include "ev_kqueue.c"
670	#endif	810	#endif
671	#if EV_USE_EPOLL	811	#if EV_USE_EPOLL
672	# include "ev_epoll.c"	812	# include "ev_epoll.c"
…		…
689	{	829	{
690	return EV_VERSION_MINOR;	830	return EV_VERSION_MINOR;
691	}	831	}
692		832
693	/* return true if we are running with elevated privileges and should ignore env variables */	833	/* return true if we are running with elevated privileges and should ignore env variables */
694	static int	834	int inline_size
695	enable_secure (void)	835	enable_secure (void)
696	{	836	{
697	#ifdef WIN32	837	#ifdef _WIN32
698	return 0;	838	return 0;
699	#else	839	#else
700	return getuid () != geteuid ()	840	return getuid () != geteuid ()
701	|| getgid () != getegid ();	841	|| getgid () != getegid ();
702	#endif	842	#endif
703	}	843	}
704		844
705	int	845	unsigned int
706	ev_method (EV_P)	846	ev_supported_backends (void)
707	{	847	{
708	return method;	848	unsigned int flags = 0;
709	}
710		849
711	static void	850	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
712	loop_init (EV_P_ int methods)	851	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		852	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		853	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		854	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		855
		856	return flags;
		857	}
		858
		859	unsigned int
		860	ev_recommended_backends (void)
713	{	861	{
714	if (!method)	862	unsigned int flags = ev_supported_backends ();
		863
		864	#ifndef __NetBSD__
		865	/* kqueue is borked on everything but netbsd apparently */
		866	/* it usually doesn't work correctly on anything but sockets and pipes */
		867	flags &= ~EVBACKEND_KQUEUE;
		868	#endif
		869	#ifdef __APPLE__
		870	// flags &= ~EVBACKEND_KQUEUE; for documentation
		871	flags &= ~EVBACKEND_POLL;
		872	#endif
		873
		874	return flags;
		875	}
		876
		877	unsigned int
		878	ev_embeddable_backends (void)
		879	{
		880	return EVBACKEND_EPOLL
		881	| EVBACKEND_KQUEUE
		882	| EVBACKEND_PORT;
		883	}
		884
		885	unsigned int
		886	ev_backend (EV_P)
		887	{
		888	return backend;
		889	}
		890
		891	static void noinline
		892	loop_init (EV_P_ unsigned int flags)
		893	{
		894	if (!backend)
715	{	895	{
716	#if EV_USE_MONOTONIC	896	#if EV_USE_MONOTONIC
717	{	897	{
718	struct timespec ts;	898	struct timespec ts;
719	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	899	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
720	have_monotonic = 1;	900	have_monotonic = 1;
721	}	901	}
722	#endif	902	#endif
723		903
724	rt_now = ev_time ();	904	ev_rt_now = ev_time ();
725	mn_now = get_clock ();	905	mn_now = get_clock ();
726	now_floor = mn_now;	906	now_floor = mn_now;
727	rtmn_diff = rt_now - mn_now;	907	rtmn_diff = ev_rt_now - mn_now;
728		908
729	if (methods == EVMETHOD_AUTO)	909	/* pid check not overridable via env */
730	if (!enable_secure () && getenv ("LIBEV_METHODS"))	910	#ifndef _WIN32
		911	if (flags & EVFLAG_FORKCHECK)
		912	curpid = getpid ();
		913	#endif
		914
		915	if (!(flags & EVFLAG_NOENV)
		916	&& !enable_secure ()
		917	&& getenv ("LIBEV_FLAGS"))
731	methods = atoi (getenv ("LIBEV_METHODS"));	918	flags = atoi (getenv ("LIBEV_FLAGS"));
732	else
733	methods = EVMETHOD_ANY;
734		919
735	method = 0;	920	if (!(flags & 0x0000ffffUL))
		921	flags |= ev_recommended_backends ();
		922
		923	backend = 0;
		924	backend_fd = -1;
736	#if EV_USE_WIN32	925	#if EV_USE_INOTIFY
737	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	926	fs_fd = -2;
		927	#endif
		928
		929	#if EV_USE_PORT
		930	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
738	#endif	931	#endif
739	#if EV_USE_KQUEUE	932	#if EV_USE_KQUEUE
740	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	933	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
741	#endif	934	#endif
742	#if EV_USE_EPOLL	935	#if EV_USE_EPOLL
743	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	936	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
744	#endif	937	#endif
745	#if EV_USE_POLL	938	#if EV_USE_POLL
746	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	939	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
747	#endif	940	#endif
748	#if EV_USE_SELECT	941	#if EV_USE_SELECT
749	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	942	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
750	#endif	943	#endif
751		944
752	ev_watcher_init (&sigev, sigcb);	945	ev_init (&sigev, sigcb);
753	ev_set_priority (&sigev, EV_MAXPRI);	946	ev_set_priority (&sigev, EV_MAXPRI);
754	}	947	}
755	}	948	}
756		949
757	void	950	static void noinline
758	loop_destroy (EV_P)	951	loop_destroy (EV_P)
759	{	952	{
760	int i;	953	int i;
761		954
762	#if EV_USE_WIN32	955	#if EV_USE_INOTIFY
763	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	956	if (fs_fd >= 0)
		957	close (fs_fd);
		958	#endif
		959
		960	if (backend_fd >= 0)
		961	close (backend_fd);
		962
		963	#if EV_USE_PORT
		964	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
764	#endif	965	#endif
765	#if EV_USE_KQUEUE	966	#if EV_USE_KQUEUE
766	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	967	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
767	#endif	968	#endif
768	#if EV_USE_EPOLL	969	#if EV_USE_EPOLL
769	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	970	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
770	#endif	971	#endif
771	#if EV_USE_POLL	972	#if EV_USE_POLL
772	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	973	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
773	#endif	974	#endif
774	#if EV_USE_SELECT	975	#if EV_USE_SELECT
775	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	976	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
776	#endif	977	#endif
777		978
778	for (i = NUMPRI; i--; )	979	for (i = NUMPRI; i--; )
779	array_free (pending, [i]);	980	array_free (pending, [i]);
780		981
781	/* have to use the microsoft-never-gets-it-right macro */	982	/* have to use the microsoft-never-gets-it-right macro */
782	array_free_microshit (fdchange);	983	array_free (fdchange, EMPTY0);
783	array_free_microshit (timer);	984	array_free (timer, EMPTY0);
784	array_free_microshit (periodic);	985	#if EV_PERIODIC_ENABLE
785	array_free_microshit (idle);	986	array_free (periodic, EMPTY0);
786	array_free_microshit (prepare);	987	#endif
787	array_free_microshit (check);	988	array_free (idle, EMPTY0);
		989	array_free (prepare, EMPTY0);
		990	array_free (check, EMPTY0);
788		991
789	method = 0;	992	backend = 0;
790	}	993	}
791		994
792	static void	995	void inline_size infy_fork (EV_P);
		996
		997	void inline_size
793	loop_fork (EV_P)	998	loop_fork (EV_P)
794	{	999	{
		1000	#if EV_USE_PORT
		1001	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1002	#endif
		1003	#if EV_USE_KQUEUE
		1004	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1005	#endif
795	#if EV_USE_EPOLL	1006	#if EV_USE_EPOLL
796	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1007	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
797	#endif	1008	#endif
798	#if EV_USE_KQUEUE	1009	#if EV_USE_INOTIFY
799	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1010	infy_fork (EV_A);
800	#endif	1011	#endif
801		1012
802	if (ev_is_active (&sigev))	1013	if (ev_is_active (&sigev))
803	{	1014	{
804	/* default loop */	1015	/* default loop */
…		…
817	postfork = 0;	1028	postfork = 0;
818	}	1029	}
819		1030
820	#if EV_MULTIPLICITY	1031	#if EV_MULTIPLICITY
821	struct ev_loop *	1032	struct ev_loop *
822	ev_loop_new (int methods)	1033	ev_loop_new (unsigned int flags)
823	{	1034	{
824	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1035	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
825		1036
826	memset (loop, 0, sizeof (struct ev_loop));	1037	memset (loop, 0, sizeof (struct ev_loop));
827		1038
828	loop_init (EV_A_ methods);	1039	loop_init (EV_A_ flags);
829		1040
830	if (ev_method (EV_A))	1041	if (ev_backend (EV_A))
831	return loop;	1042	return loop;
832		1043
833	return 0;	1044	return 0;
834	}	1045	}
835		1046
…		…
848		1059
849	#endif	1060	#endif
850		1061
851	#if EV_MULTIPLICITY	1062	#if EV_MULTIPLICITY
852	struct ev_loop *	1063	struct ev_loop *
		1064	ev_default_loop_init (unsigned int flags)
853	#else	1065	#else
854	int	1066	int
		1067	ev_default_loop (unsigned int flags)
855	#endif	1068	#endif
856	ev_default_loop (int methods)
857	{	1069	{
858	if (sigpipe [0] == sigpipe [1])	1070	if (sigpipe [0] == sigpipe [1])
859	if (pipe (sigpipe))	1071	if (pipe (sigpipe))
860	return 0;	1072	return 0;
861		1073
862	if (!default_loop)	1074	if (!ev_default_loop_ptr)
863	{	1075	{
864	#if EV_MULTIPLICITY	1076	#if EV_MULTIPLICITY
865	struct ev_loop *loop = default_loop = &default_loop_struct;	1077	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
866	#else	1078	#else
867	default_loop = 1;	1079	ev_default_loop_ptr = 1;
868	#endif	1080	#endif
869		1081
870	loop_init (EV_A_ methods);	1082	loop_init (EV_A_ flags);
871		1083
872	if (ev_method (EV_A))	1084	if (ev_backend (EV_A))
873	{	1085	{
874	siginit (EV_A);	1086	siginit (EV_A);
875		1087
876	#ifndef WIN32	1088	#ifndef _WIN32
877	ev_signal_init (&childev, childcb, SIGCHLD);	1089	ev_signal_init (&childev, childcb, SIGCHLD);
878	ev_set_priority (&childev, EV_MAXPRI);	1090	ev_set_priority (&childev, EV_MAXPRI);
879	ev_signal_start (EV_A_ &childev);	1091	ev_signal_start (EV_A_ &childev);
880	ev_unref (EV_A); /* child watcher should not keep loop alive */	1092	ev_unref (EV_A); /* child watcher should not keep loop alive */
881	#endif	1093	#endif
882	}	1094	}
883	else	1095	else
884	default_loop = 0;	1096	ev_default_loop_ptr = 0;
885	}	1097	}
886		1098
887	return default_loop;	1099	return ev_default_loop_ptr;
888	}	1100	}
889		1101
890	void	1102	void
891	ev_default_destroy (void)	1103	ev_default_destroy (void)
892	{	1104	{
893	#if EV_MULTIPLICITY	1105	#if EV_MULTIPLICITY
894	struct ev_loop *loop = default_loop;	1106	struct ev_loop *loop = ev_default_loop_ptr;
895	#endif	1107	#endif
896		1108
897	#ifndef WIN32	1109	#ifndef _WIN32
898	ev_ref (EV_A); /* child watcher */	1110	ev_ref (EV_A); /* child watcher */
899	ev_signal_stop (EV_A_ &childev);	1111	ev_signal_stop (EV_A_ &childev);
900	#endif	1112	#endif
901		1113
902	ev_ref (EV_A); /* signal watcher */	1114	ev_ref (EV_A); /* signal watcher */
…		…
910		1122
911	void	1123	void
912	ev_default_fork (void)	1124	ev_default_fork (void)
913	{	1125	{
914	#if EV_MULTIPLICITY	1126	#if EV_MULTIPLICITY
915	struct ev_loop *loop = default_loop;	1127	struct ev_loop *loop = ev_default_loop_ptr;
916	#endif	1128	#endif
917		1129
918	if (method)	1130	if (backend)
919	postfork = 1;	1131	postfork = 1;
920	}	1132	}
921		1133
922	/*****************************************************************************/	1134	/*****************************************************************************/
923		1135
924	static int	1136	int inline_size
925	any_pending (EV_P)	1137	any_pending (EV_P)
926	{	1138	{
927	int pri;	1139	int pri;
928		1140
929	for (pri = NUMPRI; pri--; )	1141	for (pri = NUMPRI; pri--; )
…		…
931	return 1;	1143	return 1;
932		1144
933	return 0;	1145	return 0;
934	}	1146	}
935		1147
936	static void	1148	void inline_speed
937	call_pending (EV_P)	1149	call_pending (EV_P)
938	{	1150	{
939	int pri;	1151	int pri;
940		1152
941	for (pri = NUMPRI; pri--; )	1153	for (pri = NUMPRI; pri--; )
942	while (pendingcnt [pri])	1154	while (pendingcnt [pri])
943	{	1155	{
944	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1156	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
945		1157
946	if (p->w)	1158	if (expect_true (p->w))
947	{	1159	{
		1160	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1161
948	p->w->pending = 0;	1162	p->w->pending = 0;
949	p->w->cb (EV_A_ p->w, p->events);	1163	EV_CB_INVOKE (p->w, p->events);
950	}	1164	}
951	}	1165	}
952	}	1166	}
953		1167
954	static void	1168	void inline_size
955	timers_reify (EV_P)	1169	timers_reify (EV_P)
956	{	1170	{
957	while (timercnt && ((WT)timers [0])->at <= mn_now)	1171	while (timercnt && ((WT)timers [0])->at <= mn_now)
958	{	1172	{
959	struct ev_timer *w = timers [0];	1173	ev_timer *w = timers [0];
960		1174
961	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1175	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
962		1176
963	/* first reschedule or stop timer */	1177	/* first reschedule or stop timer */
964	if (w->repeat)	1178	if (w->repeat)
965	{	1179	{
966	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1180	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1181
967	((WT)w)->at = mn_now + w->repeat;	1182	((WT)w)->at += w->repeat;
		1183	if (((WT)w)->at < mn_now)
		1184	((WT)w)->at = mn_now;
		1185
968	downheap ((WT *)timers, timercnt, 0);	1186	downheap ((WT *)timers, timercnt, 0);
969	}	1187	}
970	else	1188	else
971	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1189	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
972		1190
973	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1191	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
974	}	1192	}
975	}	1193	}
976		1194
977	static void	1195	#if EV_PERIODIC_ENABLE
		1196	void inline_size
978	periodics_reify (EV_P)	1197	periodics_reify (EV_P)
979	{	1198	{
980	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1199	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
981	{	1200	{
982	struct ev_periodic *w = periodics [0];	1201	ev_periodic *w = periodics [0];
983		1202
984	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1203	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
985		1204
986	/* first reschedule or stop timer */	1205	/* first reschedule or stop timer */
987	if (w->reschedule_cb)	1206	if (w->reschedule_cb)
988	{	1207	{
989	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);	1208	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
990
991	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));	1209	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
992	downheap ((WT *)periodics, periodiccnt, 0);	1210	downheap ((WT *)periodics, periodiccnt, 0);
993	}	1211	}
994	else if (w->interval)	1212	else if (w->interval)
995	{	1213	{
996	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1214	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
997	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1215	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
998	downheap ((WT *)periodics, periodiccnt, 0);	1216	downheap ((WT *)periodics, periodiccnt, 0);
999	}	1217	}
1000	else	1218	else
1001	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1219	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1002		1220
1003	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1221	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1004	}	1222	}
1005	}	1223	}
1006		1224
1007	static void	1225	static void noinline
1008	periodics_reschedule (EV_P)	1226	periodics_reschedule (EV_P)
1009	{	1227	{
1010	int i;	1228	int i;
1011		1229
1012	/* adjust periodics after time jump */	1230	/* adjust periodics after time jump */
1013	for (i = 0; i < periodiccnt; ++i)	1231	for (i = 0; i < periodiccnt; ++i)
1014	{	1232	{
1015	struct ev_periodic *w = periodics [i];	1233	ev_periodic *w = periodics [i];
1016		1234
1017	if (w->reschedule_cb)	1235	if (w->reschedule_cb)
1018	((WT)w)->at = w->reschedule_cb (w, rt_now);	1236	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1019	else if (w->interval)	1237	else if (w->interval)
1020	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1238	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1021	}	1239	}
1022		1240
1023	/* now rebuild the heap */	1241	/* now rebuild the heap */
1024	for (i = periodiccnt >> 1; i--; )	1242	for (i = periodiccnt >> 1; i--; )
1025	downheap ((WT *)periodics, periodiccnt, i);	1243	downheap ((WT *)periodics, periodiccnt, i);
1026	}	1244	}
		1245	#endif
1027		1246
1028	inline int	1247	int inline_size
1029	time_update_monotonic (EV_P)	1248	time_update_monotonic (EV_P)
1030	{	1249	{
1031	mn_now = get_clock ();	1250	mn_now = get_clock ();
1032		1251
1033	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1252	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1034	{	1253	{
1035	rt_now = rtmn_diff + mn_now;	1254	ev_rt_now = rtmn_diff + mn_now;
1036	return 0;	1255	return 0;
1037	}	1256	}
1038	else	1257	else
1039	{	1258	{
1040	now_floor = mn_now;	1259	now_floor = mn_now;
1041	rt_now = ev_time ();	1260	ev_rt_now = ev_time ();
1042	return 1;	1261	return 1;
1043	}	1262	}
1044	}	1263	}
1045		1264
1046	static void	1265	void inline_size
1047	time_update (EV_P)	1266	time_update (EV_P)
1048	{	1267	{
1049	int i;	1268	int i;
1050		1269
1051	#if EV_USE_MONOTONIC	1270	#if EV_USE_MONOTONIC
…		…
1053	{	1272	{
1054	if (time_update_monotonic (EV_A))	1273	if (time_update_monotonic (EV_A))
1055	{	1274	{
1056	ev_tstamp odiff = rtmn_diff;	1275	ev_tstamp odiff = rtmn_diff;
1057		1276
1058	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1277	/* loop a few times, before making important decisions.
		1278	* on the choice of "4": one iteration isn't enough,
		1279	* in case we get preempted during the calls to
		1280	* ev_time and get_clock. a second call is almost guaranteed
		1281	* to succeed in that case, though. and looping a few more times
		1282	* doesn't hurt either as we only do this on time-jumps or
		1283	* in the unlikely event of having been preempted here.
		1284	*/
		1285	for (i = 4; --i; )
1059	{	1286	{
1060	rtmn_diff = rt_now - mn_now;	1287	rtmn_diff = ev_rt_now - mn_now;
1061		1288
1062	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1289	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1063	return; /* all is well */	1290	return; /* all is well */
1064		1291
1065	rt_now = ev_time ();	1292	ev_rt_now = ev_time ();
1066	mn_now = get_clock ();	1293	mn_now = get_clock ();
1067	now_floor = mn_now;	1294	now_floor = mn_now;
1068	}	1295	}
1069		1296
		1297	# if EV_PERIODIC_ENABLE
1070	periodics_reschedule (EV_A);	1298	periodics_reschedule (EV_A);
		1299	# endif
1071	/* no timer adjustment, as the monotonic clock doesn't jump */	1300	/* no timer adjustment, as the monotonic clock doesn't jump */
1072	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1301	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1073	}	1302	}
1074	}	1303	}
1075	else	1304	else
1076	#endif	1305	#endif
1077	{	1306	{
1078	rt_now = ev_time ();	1307	ev_rt_now = ev_time ();
1079		1308
1080	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1309	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1081	{	1310	{
		1311	#if EV_PERIODIC_ENABLE
1082	periodics_reschedule (EV_A);	1312	periodics_reschedule (EV_A);
		1313	#endif
1083		1314
1084	/* adjust timers. this is easy, as the offset is the same for all */	1315	/* adjust timers. this is easy, as the offset is the same for all of them */
1085	for (i = 0; i < timercnt; ++i)	1316	for (i = 0; i < timercnt; ++i)
1086	((WT)timers [i])->at += rt_now - mn_now;	1317	((WT)timers [i])->at += ev_rt_now - mn_now;
1087	}	1318	}
1088		1319
1089	mn_now = rt_now;	1320	mn_now = ev_rt_now;
1090	}	1321	}
1091	}	1322	}
1092		1323
1093	void	1324	void
1094	ev_ref (EV_P)	1325	ev_ref (EV_P)
…		…
1105	static int loop_done;	1336	static int loop_done;
1106		1337
1107	void	1338	void
1108	ev_loop (EV_P_ int flags)	1339	ev_loop (EV_P_ int flags)
1109	{	1340	{
1110	double block;
1111	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1341	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1342	? EVUNLOOP_ONE
		1343	: EVUNLOOP_CANCEL;
1112		1344
1113	do	1345	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1346
		1347	for (;;)
1114	{	1348	{
		1349	#ifndef _WIN32
		1350	if (expect_false (curpid)) /* penalise the forking check even more */
		1351	if (expect_false (getpid () != curpid))
		1352	{
		1353	curpid = getpid ();
		1354	postfork = 1;
		1355	}
		1356	#endif
		1357
		1358	#if EV_FORK_ENABLE
		1359	/* we might have forked, so queue fork handlers */
		1360	if (expect_false (postfork))
		1361	if (forkcnt)
		1362	{
		1363	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1364	call_pending (EV_A);
		1365	}
		1366	#endif
		1367
1115	/* queue check watchers (and execute them) */	1368	/* queue check watchers (and execute them) */
1116	if (expect_false (preparecnt))	1369	if (expect_false (preparecnt))
1117	{	1370	{
1118	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1371	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1119	call_pending (EV_A);	1372	call_pending (EV_A);
1120	}	1373	}
1121		1374
		1375	if (expect_false (!activecnt))
		1376	break;
		1377
1122	/* we might have forked, so reify kernel state if necessary */	1378	/* we might have forked, so reify kernel state if necessary */
1123	if (expect_false (postfork))	1379	if (expect_false (postfork))
1124	loop_fork (EV_A);	1380	loop_fork (EV_A);
1125		1381
1126	/* update fd-related kernel structures */	1382	/* update fd-related kernel structures */
1127	fd_reify (EV_A);	1383	fd_reify (EV_A);
1128		1384
1129	/* calculate blocking time */	1385	/* calculate blocking time */
		1386	{
		1387	ev_tstamp block;
1130		1388
1131	/* we only need this for !monotonic clock or timers, but as we basically	1389	if (flags & EVLOOP_NONBLOCK || idlecnt)
1132	always have timers, we just calculate it always */	1390	block = 0.; /* do not block at all */
		1391	else
		1392	{
		1393	/* update time to cancel out callback processing overhead */
1133	#if EV_USE_MONOTONIC	1394	#if EV_USE_MONOTONIC
1134	if (expect_true (have_monotonic))	1395	if (expect_true (have_monotonic))
1135	time_update_monotonic (EV_A);	1396	time_update_monotonic (EV_A);
1136	else	1397	else
1137	#endif	1398	#endif
1138	{	1399	{
1139	rt_now = ev_time ();	1400	ev_rt_now = ev_time ();
1140	mn_now = rt_now;	1401	mn_now = ev_rt_now;
1141	}	1402	}
1142		1403
1143	if (flags & EVLOOP_NONBLOCK || idlecnt)
1144	block = 0.;
1145	else
1146	{
1147	block = MAX_BLOCKTIME;	1404	block = MAX_BLOCKTIME;
1148		1405
1149	if (timercnt)	1406	if (timercnt)
1150	{	1407	{
1151	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1408	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1152	if (block > to) block = to;	1409	if (block > to) block = to;
1153	}	1410	}
1154		1411
		1412	#if EV_PERIODIC_ENABLE
1155	if (periodiccnt)	1413	if (periodiccnt)
1156	{	1414	{
1157	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1415	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1158	if (block > to) block = to;	1416	if (block > to) block = to;
1159	}	1417	}
		1418	#endif
1160		1419
1161	if (block < 0.) block = 0.;	1420	if (expect_false (block < 0.)) block = 0.;
1162	}	1421	}
1163		1422
1164	method_poll (EV_A_ block);	1423	backend_poll (EV_A_ block);
		1424	}
1165		1425
1166	/* update rt_now, do magic */	1426	/* update ev_rt_now, do magic */
1167	time_update (EV_A);	1427	time_update (EV_A);
1168		1428
1169	/* queue pending timers and reschedule them */	1429	/* queue pending timers and reschedule them */
1170	timers_reify (EV_A); /* relative timers called last */	1430	timers_reify (EV_A); /* relative timers called last */
		1431	#if EV_PERIODIC_ENABLE
1171	periodics_reify (EV_A); /* absolute timers called first */	1432	periodics_reify (EV_A); /* absolute timers called first */
		1433	#endif
1172		1434
1173	/* queue idle watchers unless io or timers are pending */	1435	/* queue idle watchers unless other events are pending */
1174	if (idlecnt && !any_pending (EV_A))	1436	if (idlecnt && !any_pending (EV_A))
1175	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1437	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1176		1438
1177	/* queue check watchers, to be executed first */	1439	/* queue check watchers, to be executed first */
1178	if (checkcnt)	1440	if (expect_false (checkcnt))
1179	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1441	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1180		1442
1181	call_pending (EV_A);	1443	call_pending (EV_A);
1182	}
1183	while (activecnt && !loop_done);
1184		1444
1185	if (loop_done != 2)	1445	if (expect_false (loop_done))
1186	loop_done = 0;	1446	break;
		1447	}
		1448
		1449	if (loop_done == EVUNLOOP_ONE)
		1450	loop_done = EVUNLOOP_CANCEL;
1187	}	1451	}
1188		1452
1189	void	1453	void
1190	ev_unloop (EV_P_ int how)	1454	ev_unloop (EV_P_ int how)
1191	{	1455	{
1192	loop_done = how;	1456	loop_done = how;
1193	}	1457	}
1194		1458
1195	/*****************************************************************************/	1459	/*****************************************************************************/
1196		1460
1197	inline void	1461	void inline_size
1198	wlist_add (WL *head, WL elem)	1462	wlist_add (WL *head, WL elem)
1199	{	1463	{
1200	elem->next = *head;	1464	elem->next = *head;
1201	*head = elem;	1465	*head = elem;
1202	}	1466	}
1203		1467
1204	inline void	1468	void inline_size
1205	wlist_del (WL *head, WL elem)	1469	wlist_del (WL *head, WL elem)
1206	{	1470	{
1207	while (*head)	1471	while (*head)
1208	{	1472	{
1209	if (*head == elem)	1473	if (*head == elem)
…		…
1214		1478
1215	head = &(*head)->next;	1479	head = &(*head)->next;
1216	}	1480	}
1217	}	1481	}
1218		1482
1219	inline void	1483	void inline_speed
1220	ev_clear_pending (EV_P_ W w)	1484	ev_clear_pending (EV_P_ W w)
1221	{	1485	{
1222	if (w->pending)	1486	if (w->pending)
1223	{	1487	{
1224	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1488	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1225	w->pending = 0;	1489	w->pending = 0;
1226	}	1490	}
1227	}	1491	}
1228		1492
1229	inline void	1493	void inline_speed
1230	ev_start (EV_P_ W w, int active)	1494	ev_start (EV_P_ W w, int active)
1231	{	1495	{
1232	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1496	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1233	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1497	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1234		1498
1235	w->active = active;	1499	w->active = active;
1236	ev_ref (EV_A);	1500	ev_ref (EV_A);
1237	}	1501	}
1238		1502
1239	inline void	1503	void inline_size
1240	ev_stop (EV_P_ W w)	1504	ev_stop (EV_P_ W w)
1241	{	1505	{
1242	ev_unref (EV_A);	1506	ev_unref (EV_A);
1243	w->active = 0;	1507	w->active = 0;
1244	}	1508	}
1245		1509
1246	/*****************************************************************************/	1510	/*****************************************************************************/
1247		1511
1248	void	1512	void
1249	ev_io_start (EV_P_ struct ev_io *w)	1513	ev_io_start (EV_P_ ev_io *w)
1250	{	1514	{
1251	int fd = w->fd;	1515	int fd = w->fd;
1252		1516
1253	if (ev_is_active (w))	1517	if (expect_false (ev_is_active (w)))
1254	return;	1518	return;
1255		1519
1256	assert (("ev_io_start called with negative fd", fd >= 0));	1520	assert (("ev_io_start called with negative fd", fd >= 0));
1257		1521
1258	ev_start (EV_A_ (W)w, 1);	1522	ev_start (EV_A_ (W)w, 1);
…		…
1261		1525
1262	fd_change (EV_A_ fd);	1526	fd_change (EV_A_ fd);
1263	}	1527	}
1264		1528
1265	void	1529	void
1266	ev_io_stop (EV_P_ struct ev_io *w)	1530	ev_io_stop (EV_P_ ev_io *w)
1267	{	1531	{
1268	ev_clear_pending (EV_A_ (W)w);	1532	ev_clear_pending (EV_A_ (W)w);
1269	if (!ev_is_active (w))	1533	if (expect_false (!ev_is_active (w)))
1270	return;	1534	return;
		1535
		1536	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1271		1537
1272	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1538	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1273	ev_stop (EV_A_ (W)w);	1539	ev_stop (EV_A_ (W)w);
1274		1540
1275	fd_change (EV_A_ w->fd);	1541	fd_change (EV_A_ w->fd);
1276	}	1542	}
1277		1543
1278	void	1544	void
1279	ev_timer_start (EV_P_ struct ev_timer *w)	1545	ev_timer_start (EV_P_ ev_timer *w)
1280	{	1546	{
1281	if (ev_is_active (w))	1547	if (expect_false (ev_is_active (w)))
1282	return;	1548	return;
1283		1549
1284	((WT)w)->at += mn_now;	1550	((WT)w)->at += mn_now;
1285		1551
1286	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1552	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1287		1553
1288	ev_start (EV_A_ (W)w, ++timercnt);	1554	ev_start (EV_A_ (W)w, ++timercnt);
1289	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1555	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1290	timers [timercnt - 1] = w;	1556	timers [timercnt - 1] = w;
1291	upheap ((WT *)timers, timercnt - 1);	1557	upheap ((WT *)timers, timercnt - 1);
1292		1558
		1559	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1560	}
		1561
		1562	void
		1563	ev_timer_stop (EV_P_ ev_timer *w)
		1564	{
		1565	ev_clear_pending (EV_A_ (W)w);
		1566	if (expect_false (!ev_is_active (w)))
		1567	return;
		1568
1293	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1569	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1294	}
1295		1570
1296	void	1571	{
1297	ev_timer_stop (EV_P_ struct ev_timer *w)	1572	int active = ((W)w)->active;
1298	{
1299	ev_clear_pending (EV_A_ (W)w);
1300	if (!ev_is_active (w))
1301	return;
1302		1573
1303	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1574	if (expect_true (--active < --timercnt))
1304
1305	if (((W)w)->active < timercnt--)
1306	{	1575	{
1307	timers [((W)w)->active - 1] = timers [timercnt];	1576	timers [active] = timers [timercnt];
1308	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1577	adjustheap ((WT *)timers, timercnt, active);
1309	}	1578	}
		1579	}
1310		1580
1311	((WT)w)->at = w->repeat;	1581	((WT)w)->at -= mn_now;
1312		1582
1313	ev_stop (EV_A_ (W)w);	1583	ev_stop (EV_A_ (W)w);
1314	}	1584	}
1315		1585
1316	void	1586	void
1317	ev_timer_again (EV_P_ struct ev_timer *w)	1587	ev_timer_again (EV_P_ ev_timer *w)
1318	{	1588	{
1319	if (ev_is_active (w))	1589	if (ev_is_active (w))
1320	{	1590	{
1321	if (w->repeat)	1591	if (w->repeat)
1322	{	1592	{
1323	((WT)w)->at = mn_now + w->repeat;	1593	((WT)w)->at = mn_now + w->repeat;
1324	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1594	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1325	}	1595	}
1326	else	1596	else
1327	ev_timer_stop (EV_A_ w);	1597	ev_timer_stop (EV_A_ w);
1328	}	1598	}
1329	else if (w->repeat)	1599	else if (w->repeat)
		1600	{
		1601	w->at = w->repeat;
1330	ev_timer_start (EV_A_ w);	1602	ev_timer_start (EV_A_ w);
		1603	}
1331	}	1604	}
1332		1605
		1606	#if EV_PERIODIC_ENABLE
1333	void	1607	void
1334	ev_periodic_start (EV_P_ struct ev_periodic *w)	1608	ev_periodic_start (EV_P_ ev_periodic *w)
1335	{	1609	{
1336	if (ev_is_active (w))	1610	if (expect_false (ev_is_active (w)))
1337	return;	1611	return;
1338		1612
1339	if (w->reschedule_cb)	1613	if (w->reschedule_cb)
1340	((WT)w)->at = w->reschedule_cb (w, rt_now);	1614	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1341	else if (w->interval)	1615	else if (w->interval)
1342	{	1616	{
1343	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1617	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1344	/* this formula differs from the one in periodic_reify because we do not always round up */	1618	/* this formula differs from the one in periodic_reify because we do not always round up */
1345	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1619	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1346	}	1620	}
1347		1621
1348	ev_start (EV_A_ (W)w, ++periodiccnt);	1622	ev_start (EV_A_ (W)w, ++periodiccnt);
1349	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1623	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1350	periodics [periodiccnt - 1] = w;	1624	periodics [periodiccnt - 1] = w;
1351	upheap ((WT *)periodics, periodiccnt - 1);	1625	upheap ((WT *)periodics, periodiccnt - 1);
1352		1626
		1627	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1628	}
		1629
		1630	void
		1631	ev_periodic_stop (EV_P_ ev_periodic *w)
		1632	{
		1633	ev_clear_pending (EV_A_ (W)w);
		1634	if (expect_false (!ev_is_active (w)))
		1635	return;
		1636
1353	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1637	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1354	}
1355		1638
1356	void	1639	{
1357	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1640	int active = ((W)w)->active;
1358	{
1359	ev_clear_pending (EV_A_ (W)w);
1360	if (!ev_is_active (w))
1361	return;
1362		1641
1363	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1642	if (expect_true (--active < --periodiccnt))
1364
1365	if (((W)w)->active < periodiccnt--)
1366	{	1643	{
1367	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1644	periodics [active] = periodics [periodiccnt];
1368	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1645	adjustheap ((WT *)periodics, periodiccnt, active);
1369	}	1646	}
		1647	}
1370		1648
1371	ev_stop (EV_A_ (W)w);	1649	ev_stop (EV_A_ (W)w);
1372	}	1650	}
1373		1651
1374	void	1652	void
1375	ev_periodic_again (EV_P_ struct ev_periodic *w)	1653	ev_periodic_again (EV_P_ ev_periodic *w)
1376	{	1654	{
		1655	/* TODO: use adjustheap and recalculation */
1377	ev_periodic_stop (EV_A_ w);	1656	ev_periodic_stop (EV_A_ w);
1378	ev_periodic_start (EV_A_ w);	1657	ev_periodic_start (EV_A_ w);
1379	}	1658	}
1380		1659	#endif
1381	void
1382	ev_idle_start (EV_P_ struct ev_idle *w)
1383	{
1384	if (ev_is_active (w))
1385	return;
1386
1387	ev_start (EV_A_ (W)w, ++idlecnt);
1388	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1389	idles [idlecnt - 1] = w;
1390	}
1391
1392	void
1393	ev_idle_stop (EV_P_ struct ev_idle *w)
1394	{
1395	ev_clear_pending (EV_A_ (W)w);
1396	if (ev_is_active (w))
1397	return;
1398
1399	idles [((W)w)->active - 1] = idles [--idlecnt];
1400	ev_stop (EV_A_ (W)w);
1401	}
1402
1403	void
1404	ev_prepare_start (EV_P_ struct ev_prepare *w)
1405	{
1406	if (ev_is_active (w))
1407	return;
1408
1409	ev_start (EV_A_ (W)w, ++preparecnt);
1410	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1411	prepares [preparecnt - 1] = w;
1412	}
1413
1414	void
1415	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1416	{
1417	ev_clear_pending (EV_A_ (W)w);
1418	if (ev_is_active (w))
1419	return;
1420
1421	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1422	ev_stop (EV_A_ (W)w);
1423	}
1424
1425	void
1426	ev_check_start (EV_P_ struct ev_check *w)
1427	{
1428	if (ev_is_active (w))
1429	return;
1430
1431	ev_start (EV_A_ (W)w, ++checkcnt);
1432	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1433	checks [checkcnt - 1] = w;
1434	}
1435
1436	void
1437	ev_check_stop (EV_P_ struct ev_check *w)
1438	{
1439	ev_clear_pending (EV_A_ (W)w);
1440	if (ev_is_active (w))
1441	return;
1442
1443	checks [((W)w)->active - 1] = checks [--checkcnt];
1444	ev_stop (EV_A_ (W)w);
1445	}
1446		1660
1447	#ifndef SA_RESTART	1661	#ifndef SA_RESTART
1448	# define SA_RESTART 0	1662	# define SA_RESTART 0
1449	#endif	1663	#endif
1450		1664
1451	void	1665	void
1452	ev_signal_start (EV_P_ struct ev_signal *w)	1666	ev_signal_start (EV_P_ ev_signal *w)
1453	{	1667	{
1454	#if EV_MULTIPLICITY	1668	#if EV_MULTIPLICITY
1455	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1669	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1456	#endif	1670	#endif
1457	if (ev_is_active (w))	1671	if (expect_false (ev_is_active (w)))
1458	return;	1672	return;
1459		1673
1460	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1674	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1461		1675
1462	ev_start (EV_A_ (W)w, 1);	1676	ev_start (EV_A_ (W)w, 1);
1463	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1677	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1464	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1678	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1465		1679
1466	if (!((WL)w)->next)	1680	if (!((WL)w)->next)
1467	{	1681	{
1468	#if WIN32	1682	#if _WIN32
1469	signal (w->signum, sighandler);	1683	signal (w->signum, sighandler);
1470	#else	1684	#else
1471	struct sigaction sa;	1685	struct sigaction sa;
1472	sa.sa_handler = sighandler;	1686	sa.sa_handler = sighandler;
1473	sigfillset (&sa.sa_mask);	1687	sigfillset (&sa.sa_mask);
…		…
1476	#endif	1690	#endif
1477	}	1691	}
1478	}	1692	}
1479		1693
1480	void	1694	void
1481	ev_signal_stop (EV_P_ struct ev_signal *w)	1695	ev_signal_stop (EV_P_ ev_signal *w)
1482	{	1696	{
1483	ev_clear_pending (EV_A_ (W)w);	1697	ev_clear_pending (EV_A_ (W)w);
1484	if (!ev_is_active (w))	1698	if (expect_false (!ev_is_active (w)))
1485	return;	1699	return;
1486		1700
1487	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1701	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1488	ev_stop (EV_A_ (W)w);	1702	ev_stop (EV_A_ (W)w);
1489		1703
1490	if (!signals [w->signum - 1].head)	1704	if (!signals [w->signum - 1].head)
1491	signal (w->signum, SIG_DFL);	1705	signal (w->signum, SIG_DFL);
1492	}	1706	}
1493		1707
1494	void	1708	void
1495	ev_child_start (EV_P_ struct ev_child *w)	1709	ev_child_start (EV_P_ ev_child *w)
1496	{	1710	{
1497	#if EV_MULTIPLICITY	1711	#if EV_MULTIPLICITY
1498	assert (("child watchers are only supported in the default loop", loop == default_loop));	1712	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1499	#endif	1713	#endif
1500	if (ev_is_active (w))	1714	if (expect_false (ev_is_active (w)))
1501	return;	1715	return;
1502		1716
1503	ev_start (EV_A_ (W)w, 1);	1717	ev_start (EV_A_ (W)w, 1);
1504	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1718	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1505	}	1719	}
1506		1720
1507	void	1721	void
1508	ev_child_stop (EV_P_ struct ev_child *w)	1722	ev_child_stop (EV_P_ ev_child *w)
1509	{	1723	{
1510	ev_clear_pending (EV_A_ (W)w);	1724	ev_clear_pending (EV_A_ (W)w);
1511	if (ev_is_active (w))	1725	if (expect_false (!ev_is_active (w)))
1512	return;	1726	return;
1513		1727
1514	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1728	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1515	ev_stop (EV_A_ (W)w);	1729	ev_stop (EV_A_ (W)w);
1516	}	1730	}
1517		1731
		1732	#if EV_STAT_ENABLE
		1733
		1734	# ifdef _WIN32
		1735	# undef lstat
		1736	# define lstat(a,b) _stati64 (a,b)
		1737	# endif
		1738
		1739	#define DEF_STAT_INTERVAL 5.0074891
		1740	#define MIN_STAT_INTERVAL 0.1074891
		1741
		1742	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1743
		1744	#if EV_USE_INOTIFY
		1745	# define EV_INOTIFY_BUFSIZE 8192
		1746
		1747	static void noinline
		1748	infy_add (EV_P_ ev_stat *w)
		1749	{
		1750	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
		1751
		1752	if (w->wd < 0)
		1753	{
		1754	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1755
		1756	/* monitor some parent directory for speedup hints */
		1757	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1758	{
		1759	char path [4096];
		1760	strcpy (path, w->path);
		1761
		1762	do
		1763	{
		1764	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1765	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1766
		1767	char *pend = strrchr (path, '/');
		1768
		1769	if (!pend)
		1770	break; /* whoops, no '/', complain to your admin */
		1771
		1772	*pend = 0;
		1773	w->wd = inotify_add_watch (fs_fd, path, mask);
		1774	}
		1775	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1776	}
		1777	}
		1778	else
		1779	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1780
		1781	if (w->wd >= 0)
		1782	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1783	}
		1784
		1785	static void noinline
		1786	infy_del (EV_P_ ev_stat *w)
		1787	{
		1788	int slot;
		1789	int wd = w->wd;
		1790
		1791	if (wd < 0)
		1792	return;
		1793
		1794	w->wd = -2;
		1795	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1796	wlist_del (&fs_hash [slot].head, (WL)w);
		1797
		1798	/* remove this watcher, if others are watching it, they will rearm */
		1799	inotify_rm_watch (fs_fd, wd);
		1800	}
		1801
		1802	static void noinline
		1803	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1804	{
		1805	if (slot < 0)
		1806	/* overflow, need to check for all hahs slots */
		1807	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1808	infy_wd (EV_A_ slot, wd, ev);
		1809	else
		1810	{
		1811	WL w_;
		1812
		1813	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1814	{
		1815	ev_stat *w = (ev_stat *)w_;
		1816	w_ = w_->next; /* lets us remove this watcher and all before it */
		1817
		1818	if (w->wd == wd || wd == -1)
		1819	{
		1820	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1821	{
		1822	w->wd = -1;
		1823	infy_add (EV_A_ w); /* re-add, no matter what */
		1824	}
		1825
		1826	stat_timer_cb (EV_A_ &w->timer, 0);
		1827	}
		1828	}
		1829	}
		1830	}
		1831
		1832	static void
		1833	infy_cb (EV_P_ ev_io *w, int revents)
		1834	{
		1835	char buf [EV_INOTIFY_BUFSIZE];
		1836	struct inotify_event *ev = (struct inotify_event *)buf;
		1837	int ofs;
		1838	int len = read (fs_fd, buf, sizeof (buf));
		1839
		1840	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1841	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1842	}
		1843
		1844	void inline_size
		1845	infy_init (EV_P)
		1846	{
		1847	if (fs_fd != -2)
		1848	return;
		1849
		1850	fs_fd = inotify_init ();
		1851
		1852	if (fs_fd >= 0)
		1853	{
		1854	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1855	ev_set_priority (&fs_w, EV_MAXPRI);
		1856	ev_io_start (EV_A_ &fs_w);
		1857	}
		1858	}
		1859
		1860	void inline_size
		1861	infy_fork (EV_P)
		1862	{
		1863	int slot;
		1864
		1865	if (fs_fd < 0)
		1866	return;
		1867
		1868	close (fs_fd);
		1869	fs_fd = inotify_init ();
		1870
		1871	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1872	{
		1873	WL w_ = fs_hash [slot].head;
		1874	fs_hash [slot].head = 0;
		1875
		1876	while (w_)
		1877	{
		1878	ev_stat *w = (ev_stat *)w_;
		1879	w_ = w_->next; /* lets us add this watcher */
		1880
		1881	w->wd = -1;
		1882
		1883	if (fs_fd >= 0)
		1884	infy_add (EV_A_ w); /* re-add, no matter what */
		1885	else
		1886	ev_timer_start (EV_A_ &w->timer);
		1887	}
		1888
		1889	}
		1890	}
		1891
		1892	#endif
		1893
		1894	void
		1895	ev_stat_stat (EV_P_ ev_stat *w)
		1896	{
		1897	if (lstat (w->path, &w->attr) < 0)
		1898	w->attr.st_nlink = 0;
		1899	else if (!w->attr.st_nlink)
		1900	w->attr.st_nlink = 1;
		1901	}
		1902
		1903	static void noinline
		1904	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1905	{
		1906	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1907
		1908	/* we copy this here each the time so that */
		1909	/* prev has the old value when the callback gets invoked */
		1910	w->prev = w->attr;
		1911	ev_stat_stat (EV_A_ w);
		1912
		1913	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1914	if (
		1915	w->prev.st_dev != w->attr.st_dev
		1916	|| w->prev.st_ino != w->attr.st_ino
		1917	|| w->prev.st_mode != w->attr.st_mode
		1918	|| w->prev.st_nlink != w->attr.st_nlink
		1919	|| w->prev.st_uid != w->attr.st_uid
		1920	|| w->prev.st_gid != w->attr.st_gid
		1921	|| w->prev.st_rdev != w->attr.st_rdev
		1922	|| w->prev.st_size != w->attr.st_size
		1923	|| w->prev.st_atime != w->attr.st_atime
		1924	|| w->prev.st_mtime != w->attr.st_mtime
		1925	|| w->prev.st_ctime != w->attr.st_ctime
		1926	) {
		1927	#if EV_USE_INOTIFY
		1928	infy_del (EV_A_ w);
		1929	infy_add (EV_A_ w);
		1930	ev_stat_stat (EV_A_ w); /* avoid race... */
		1931	#endif
		1932
		1933	ev_feed_event (EV_A_ w, EV_STAT);
		1934	}
		1935	}
		1936
		1937	void
		1938	ev_stat_start (EV_P_ ev_stat *w)
		1939	{
		1940	if (expect_false (ev_is_active (w)))
		1941	return;
		1942
		1943	/* since we use memcmp, we need to clear any padding data etc. */
		1944	memset (&w->prev, 0, sizeof (ev_statdata));
		1945	memset (&w->attr, 0, sizeof (ev_statdata));
		1946
		1947	ev_stat_stat (EV_A_ w);
		1948
		1949	if (w->interval < MIN_STAT_INTERVAL)
		1950	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1951
		1952	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1953	ev_set_priority (&w->timer, ev_priority (w));
		1954
		1955	#if EV_USE_INOTIFY
		1956	infy_init (EV_A);
		1957
		1958	if (fs_fd >= 0)
		1959	infy_add (EV_A_ w);
		1960	else
		1961	#endif
		1962	ev_timer_start (EV_A_ &w->timer);
		1963
		1964	ev_start (EV_A_ (W)w, 1);
		1965	}
		1966
		1967	void
		1968	ev_stat_stop (EV_P_ ev_stat *w)
		1969	{
		1970	ev_clear_pending (EV_A_ (W)w);
		1971	if (expect_false (!ev_is_active (w)))
		1972	return;
		1973
		1974	#if EV_USE_INOTIFY
		1975	infy_del (EV_A_ w);
		1976	#endif
		1977	ev_timer_stop (EV_A_ &w->timer);
		1978
		1979	ev_stop (EV_A_ (W)w);
		1980	}
		1981	#endif
		1982
		1983	void
		1984	ev_idle_start (EV_P_ ev_idle *w)
		1985	{
		1986	if (expect_false (ev_is_active (w)))
		1987	return;
		1988
		1989	ev_start (EV_A_ (W)w, ++idlecnt);
		1990	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1991	idles [idlecnt - 1] = w;
		1992	}
		1993
		1994	void
		1995	ev_idle_stop (EV_P_ ev_idle *w)
		1996	{
		1997	ev_clear_pending (EV_A_ (W)w);
		1998	if (expect_false (!ev_is_active (w)))
		1999	return;
		2000
		2001	{
		2002	int active = ((W)w)->active;
		2003	idles [active - 1] = idles [--idlecnt];
		2004	((W)idles [active - 1])->active = active;
		2005	}
		2006
		2007	ev_stop (EV_A_ (W)w);
		2008	}
		2009
		2010	void
		2011	ev_prepare_start (EV_P_ ev_prepare *w)
		2012	{
		2013	if (expect_false (ev_is_active (w)))
		2014	return;
		2015
		2016	ev_start (EV_A_ (W)w, ++preparecnt);
		2017	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2018	prepares [preparecnt - 1] = w;
		2019	}
		2020
		2021	void
		2022	ev_prepare_stop (EV_P_ ev_prepare *w)
		2023	{
		2024	ev_clear_pending (EV_A_ (W)w);
		2025	if (expect_false (!ev_is_active (w)))
		2026	return;
		2027
		2028	{
		2029	int active = ((W)w)->active;
		2030	prepares [active - 1] = prepares [--preparecnt];
		2031	((W)prepares [active - 1])->active = active;
		2032	}
		2033
		2034	ev_stop (EV_A_ (W)w);
		2035	}
		2036
		2037	void
		2038	ev_check_start (EV_P_ ev_check *w)
		2039	{
		2040	if (expect_false (ev_is_active (w)))
		2041	return;
		2042
		2043	ev_start (EV_A_ (W)w, ++checkcnt);
		2044	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2045	checks [checkcnt - 1] = w;
		2046	}
		2047
		2048	void
		2049	ev_check_stop (EV_P_ ev_check *w)
		2050	{
		2051	ev_clear_pending (EV_A_ (W)w);
		2052	if (expect_false (!ev_is_active (w)))
		2053	return;
		2054
		2055	{
		2056	int active = ((W)w)->active;
		2057	checks [active - 1] = checks [--checkcnt];
		2058	((W)checks [active - 1])->active = active;
		2059	}
		2060
		2061	ev_stop (EV_A_ (W)w);
		2062	}
		2063
		2064	#if EV_EMBED_ENABLE
		2065	void noinline
		2066	ev_embed_sweep (EV_P_ ev_embed *w)
		2067	{
		2068	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2069	}
		2070
		2071	static void
		2072	embed_cb (EV_P_ ev_io *io, int revents)
		2073	{
		2074	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2075
		2076	if (ev_cb (w))
		2077	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2078	else
		2079	ev_embed_sweep (loop, w);
		2080	}
		2081
		2082	void
		2083	ev_embed_start (EV_P_ ev_embed *w)
		2084	{
		2085	if (expect_false (ev_is_active (w)))
		2086	return;
		2087
		2088	{
		2089	struct ev_loop *loop = w->loop;
		2090	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2091	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2092	}
		2093
		2094	ev_set_priority (&w->io, ev_priority (w));
		2095	ev_io_start (EV_A_ &w->io);
		2096
		2097	ev_start (EV_A_ (W)w, 1);
		2098	}
		2099
		2100	void
		2101	ev_embed_stop (EV_P_ ev_embed *w)
		2102	{
		2103	ev_clear_pending (EV_A_ (W)w);
		2104	if (expect_false (!ev_is_active (w)))
		2105	return;
		2106
		2107	ev_io_stop (EV_A_ &w->io);
		2108
		2109	ev_stop (EV_A_ (W)w);
		2110	}
		2111	#endif
		2112
		2113	#if EV_FORK_ENABLE
		2114	void
		2115	ev_fork_start (EV_P_ ev_fork *w)
		2116	{
		2117	if (expect_false (ev_is_active (w)))
		2118	return;
		2119
		2120	ev_start (EV_A_ (W)w, ++forkcnt);
		2121	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2122	forks [forkcnt - 1] = w;
		2123	}
		2124
		2125	void
		2126	ev_fork_stop (EV_P_ ev_fork *w)
		2127	{
		2128	ev_clear_pending (EV_A_ (W)w);
		2129	if (expect_false (!ev_is_active (w)))
		2130	return;
		2131
		2132	{
		2133	int active = ((W)w)->active;
		2134	forks [active - 1] = forks [--forkcnt];
		2135	((W)forks [active - 1])->active = active;
		2136	}
		2137
		2138	ev_stop (EV_A_ (W)w);
		2139	}
		2140	#endif
		2141
1518	/*****************************************************************************/	2142	/*****************************************************************************/
1519		2143
1520	struct ev_once	2144	struct ev_once
1521	{	2145	{
1522	struct ev_io io;	2146	ev_io io;
1523	struct ev_timer to;	2147	ev_timer to;
1524	void (*cb)(int revents, void *arg);	2148	void (*cb)(int revents, void *arg);
1525	void *arg;	2149	void *arg;
1526	};	2150	};
1527		2151
1528	static void	2152	static void
…		…
1537		2161
1538	cb (revents, arg);	2162	cb (revents, arg);
1539	}	2163	}
1540		2164
1541	static void	2165	static void
1542	once_cb_io (EV_P_ struct ev_io *w, int revents)	2166	once_cb_io (EV_P_ ev_io *w, int revents)
1543	{	2167	{
1544	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2168	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1545	}	2169	}
1546		2170
1547	static void	2171	static void
1548	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2172	once_cb_to (EV_P_ ev_timer *w, int revents)
1549	{	2173	{
1550	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2174	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1551	}	2175	}
1552		2176
1553	void	2177	void
1554	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2178	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1555	{	2179	{
1556	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	2180	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1557		2181
1558	if (!once)	2182	if (expect_false (!once))
		2183	{
1559	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2184	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1560	else	2185	return;
1561	{	2186	}
		2187
1562	once->cb = cb;	2188	once->cb = cb;
1563	once->arg = arg;	2189	once->arg = arg;
1564		2190
1565	ev_watcher_init (&once->io, once_cb_io);	2191	ev_init (&once->io, once_cb_io);
1566	if (fd >= 0)	2192	if (fd >= 0)
1567	{	2193	{
1568	ev_io_set (&once->io, fd, events);	2194	ev_io_set (&once->io, fd, events);
1569	ev_io_start (EV_A_ &once->io);	2195	ev_io_start (EV_A_ &once->io);
1570	}	2196	}
1571		2197
1572	ev_watcher_init (&once->to, once_cb_to);	2198	ev_init (&once->to, once_cb_to);
1573	if (timeout >= 0.)	2199	if (timeout >= 0.)
1574	{	2200	{
1575	ev_timer_set (&once->to, timeout, 0.);	2201	ev_timer_set (&once->to, timeout, 0.);
1576	ev_timer_start (EV_A_ &once->to);	2202	ev_timer_start (EV_A_ &once->to);
1577	}
1578	}	2203	}
1579	}	2204	}
1580		2205
		2206	#ifdef __cplusplus
		2207	}
		2208	#endif
		2209

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