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Comparing libev/ev.c (file contents):
Revision 1.81 by root, Fri Nov 9 17:07:59 2007 UTC vs.
Revision 1.158 by root, Thu Nov 29 17:28:13 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
71	#ifndef WIN32
72	# include <unistd.h>
73	# include <sys/time.h>
74	# include <sys/wait.h>
75	#endif
76	/**/
77
78	#ifndef EV_USE_MONOTONIC
79	# define EV_USE_MONOTONIC 1
80	#endif
81
82	#ifndef EV_USE_SELECT
83	# define EV_USE_SELECT 1
84	#endif
85
86	#ifndef EV_USE_POLL
87	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
88	#endif
89
90	#ifndef EV_USE_EPOLL
91	# define EV_USE_EPOLL 0
92	#endif
93
94	#ifndef EV_USE_KQUEUE
95	# define EV_USE_KQUEUE 0
96	#endif
97
98	#ifndef EV_USE_WIN32
99	# ifdef WIN32
100	# define EV_USE_WIN32 0 /* it does not exist, use select */
101	# undef EV_USE_SELECT
102	# define EV_USE_SELECT 1
103	# else
104	# define EV_USE_WIN32 0
105	# endif
106	#endif
107
108	#ifndef EV_USE_REALTIME
109	# define EV_USE_REALTIME 1
110	#endif
111
112	/**/
113
114	#ifndef CLOCK_MONOTONIC
115	# undef EV_USE_MONOTONIC
116	# define EV_USE_MONOTONIC 0
117	#endif
118
119	#ifndef CLOCK_REALTIME
120	# undef EV_USE_REALTIME
121	# define EV_USE_REALTIME 0
122	#endif
123
124	/**/
125
126	#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) */
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 */
130
131	#ifdef EV_H	123	#ifdef EV_H
132	# include EV_H	124	# include EV_H
133	#else	125	#else
134	# include "ev.h"	126	# include "ev.h"
135	#endif	127	#endif
136		128
		129	#ifndef _WIN32
		130	# include <sys/time.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
		138	# endif
		139	#endif
		140
		141	/**/
		142
		143	#ifndef EV_USE_MONOTONIC
		144	# define EV_USE_MONOTONIC 0
		145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
		149	#endif
		150
		151	#ifndef EV_USE_SELECT
		152	# define EV_USE_SELECT 1
		153	#endif
		154
		155	#ifndef EV_USE_POLL
		156	# ifdef _WIN32
		157	# define EV_USE_POLL 0
		158	# else
		159	# define EV_USE_POLL 1
		160	# endif
		161	#endif
		162
		163	#ifndef EV_USE_EPOLL
		164	# define EV_USE_EPOLL 0
		165	#endif
		166
		167	#ifndef EV_USE_KQUEUE
		168	# define EV_USE_KQUEUE 0
		169	#endif
		170
		171	#ifndef EV_USE_PORT
		172	# define EV_USE_PORT 0
		173	#endif
		174
		175	#ifndef EV_USE_INOTIFY
		176	# define EV_USE_INOTIFY 0
		177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
		182	# else
		183	# define EV_PID_HASHSIZE 16
		184	# endif
		185	#endif
		186
		187	#ifndef EV_INOTIFY_HASHSIZE
		188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
		193	#endif
		194
		195	/**/
		196
		197	#ifndef CLOCK_MONOTONIC
		198	# undef EV_USE_MONOTONIC
		199	# define EV_USE_MONOTONIC 0
		200	#endif
		201
		202	#ifndef CLOCK_REALTIME
		203	# undef EV_USE_REALTIME
		204	# define EV_USE_REALTIME 0
		205	#endif
		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
		219	/**/
		220
		221	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
		222	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
		223	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
		224
137	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
138	# 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
139	# 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
140	#else	235	#else
141	# define expect(expr,value) (expr)	236	# define expect(expr,value) (expr)
		237	# define inline_speed static
142	# define inline static	238	# define inline_size static
		239	# define noinline
143	#endif	240	#endif
144		241
145	#define expect_false(expr) expect ((expr) != 0, 0)	242	#define expect_false(expr) expect ((expr) != 0, 0)
146	#define expect_true(expr) expect ((expr) != 0, 1)	243	#define expect_true(expr) expect ((expr) != 0, 1)
147		244
148	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
149	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	246	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
150		247
		248	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		249	#define EMPTY2(a,b) /* used to suppress some warnings */
		250
151	typedef struct ev_watcher *W;	251	typedef ev_watcher *W;
152	typedef struct ev_watcher_list *WL;	252	typedef ev_watcher_list *WL;
153	typedef struct ev_watcher_time *WT;	253	typedef ev_watcher_time *WT;
154		254
155	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
156		256
		257	#ifdef _WIN32
157	#include "ev_win32.c"	258	# include "ev_win32.c"
		259	#endif
158		260
159	/*****************************************************************************/	261	/*****************************************************************************/
160		262
161	static void (*syserr_cb)(const char *msg);	263	static void (*syserr_cb)(const char *msg);
162		264
		265	void
163	void ev_set_syserr_cb (void (*cb)(const char *msg))	266	ev_set_syserr_cb (void (*cb)(const char *msg))
164	{	267	{
165	syserr_cb = cb;	268	syserr_cb = cb;
166	}	269	}
167		270
168	static void	271	static void noinline
169	syserr (const char *msg)	272	syserr (const char *msg)
170	{	273	{
171	if (!msg)	274	if (!msg)
172	msg = "(libev) system error";	275	msg = "(libev) system error";
173		276
…		…
180	}	283	}
181	}	284	}
182		285
183	static void *(*alloc)(void *ptr, long size);	286	static void *(*alloc)(void *ptr, long size);
184		287
		288	void
185	void ev_set_allocator (void *(*cb)(void *ptr, long size))	289	ev_set_allocator (void *(*cb)(void *ptr, long size))
186	{	290	{
187	alloc = cb;	291	alloc = cb;
188	}	292	}
189		293
190	static void *	294	inline_speed void *
191	ev_realloc (void *ptr, long size)	295	ev_realloc (void *ptr, long size)
192	{	296	{
193	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	297	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
194		298
195	if (!ptr && size)	299	if (!ptr && size)
…		…
209	typedef struct	313	typedef struct
210	{	314	{
211	WL head;	315	WL head;
212	unsigned char events;	316	unsigned char events;
213	unsigned char reify;	317	unsigned char reify;
		318	#if EV_SELECT_IS_WINSOCKET
		319	SOCKET handle;
		320	#endif
214	} ANFD;	321	} ANFD;
215		322
216	typedef struct	323	typedef struct
217	{	324	{
218	W w;	325	W w;
219	int events;	326	int events;
220	} ANPENDING;	327	} ANPENDING;
221		328
		329	#if EV_USE_INOTIFY
		330	typedef struct
		331	{
		332	WL head;
		333	} ANFS;
		334	#endif
		335
222	#if EV_MULTIPLICITY	336	#if EV_MULTIPLICITY
223		337
224	struct ev_loop	338	struct ev_loop
225	{	339	{
		340	ev_tstamp ev_rt_now;
		341	#define ev_rt_now ((loop)->ev_rt_now)
226	#define VAR(name,decl) decl;	342	#define VAR(name,decl) decl;
227	#include "ev_vars.h"	343	#include "ev_vars.h"
228	#undef VAR	344	#undef VAR
229	};	345	};
230	#include "ev_wrap.h"	346	#include "ev_wrap.h"
231		347
232	struct ev_loop default_loop_struct;	348	static struct ev_loop default_loop_struct;
233	static struct ev_loop *default_loop;	349	struct ev_loop *ev_default_loop_ptr;
234		350
235	#else	351	#else
236		352
		353	ev_tstamp ev_rt_now;
237	#define VAR(name,decl) static decl;	354	#define VAR(name,decl) static decl;
238	#include "ev_vars.h"	355	#include "ev_vars.h"
239	#undef VAR	356	#undef VAR
240		357
241	static int default_loop;	358	static int ev_default_loop_ptr;
242		359
243	#endif	360	#endif
244		361
245	/*****************************************************************************/	362	/*****************************************************************************/
246		363
247	inline ev_tstamp	364	ev_tstamp
248	ev_time (void)	365	ev_time (void)
249	{	366	{
250	#if EV_USE_REALTIME	367	#if EV_USE_REALTIME
251	struct timespec ts;	368	struct timespec ts;
252	clock_gettime (CLOCK_REALTIME, &ts);	369	clock_gettime (CLOCK_REALTIME, &ts);
…		…
256	gettimeofday (&tv, 0);	373	gettimeofday (&tv, 0);
257	return tv.tv_sec + tv.tv_usec * 1e-6;	374	return tv.tv_sec + tv.tv_usec * 1e-6;
258	#endif	375	#endif
259	}	376	}
260		377
261	inline ev_tstamp	378	ev_tstamp inline_size
262	get_clock (void)	379	get_clock (void)
263	{	380	{
264	#if EV_USE_MONOTONIC	381	#if EV_USE_MONOTONIC
265	if (expect_true (have_monotonic))	382	if (expect_true (have_monotonic))
266	{	383	{
…		…
271	#endif	388	#endif
272		389
273	return ev_time ();	390	return ev_time ();
274	}	391	}
275		392
		393	#if EV_MULTIPLICITY
276	ev_tstamp	394	ev_tstamp
277	ev_now (EV_P)	395	ev_now (EV_P)
278	{	396	{
279	return rt_now;	397	return ev_rt_now;
280	}	398	}
		399	#endif
281		400
282	#define array_roundsize(type,n) ((n) | 4 & ~3)	401	#define array_roundsize(type,n) (((n) | 4) & ~3)
283		402
284	#define array_needsize(type,base,cur,cnt,init) \	403	#define array_needsize(type,base,cur,cnt,init) \
285	if (expect_false ((cnt) > cur)) \	404	if (expect_false ((cnt) > cur)) \
286	{ \	405	{ \
287	int newcnt = cur; \	406	int newcnt = cur; \
…		…
302	stem ## max = array_roundsize (stem ## cnt >> 1); \	421	stem ## max = array_roundsize (stem ## cnt >> 1); \
303	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	422	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
304	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	423	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
305	}	424	}
306		425
307	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
308	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
309	#define array_free_microshit(stem) \
310	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
311
312	#define array_free(stem, idx) \	426	#define array_free(stem, idx) \
313	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;
314		428
315	/*****************************************************************************/	429	/*****************************************************************************/
316		430
317	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
318	anfds_init (ANFD *base, int count)	460	anfds_init (ANFD *base, int count)
319	{	461	{
320	while (count--)	462	while (count--)
321	{	463	{
322	base->head = 0;	464	base->head = 0;
…		…
325		467
326	++base;	468	++base;
327	}	469	}
328	}	470	}
329		471
330	void	472	void inline_speed
331	ev_feed_event (EV_P_ void *w, int revents)
332	{
333	W w_ = (W)w;
334
335	if (w_->pending)
336	{
337	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
338	return;
339	}
340
341	w_->pending = ++pendingcnt [ABSPRI (w_)];
342	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
343	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
344	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
345	}
346
347	static void
348	queue_events (EV_P_ W *events, int eventcnt, int type)
349	{
350	int i;
351
352	for (i = 0; i < eventcnt; ++i)
353	ev_feed_event (EV_A_ events [i], type);
354	}
355
356	inline void
357	fd_event (EV_P_ int fd, int revents)	473	fd_event (EV_P_ int fd, int revents)
358	{	474	{
359	ANFD *anfd = anfds + fd;	475	ANFD *anfd = anfds + fd;
360	struct ev_io *w;	476	ev_io *w;
361		477
362	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)
363	{	479	{
364	int ev = w->events & revents;	480	int ev = w->events & revents;
365		481
366	if (ev)	482	if (ev)
367	ev_feed_event (EV_A_ (W)w, ev);	483	ev_feed_event (EV_A_ (W)w, ev);
…		…
372	ev_feed_fd_event (EV_P_ int fd, int revents)	488	ev_feed_fd_event (EV_P_ int fd, int revents)
373	{	489	{
374	fd_event (EV_A_ fd, revents);	490	fd_event (EV_A_ fd, revents);
375	}	491	}
376		492
377	/*****************************************************************************/	493	void inline_size
378
379	static void
380	fd_reify (EV_P)	494	fd_reify (EV_P)
381	{	495	{
382	int i;	496	int i;
383		497
384	for (i = 0; i < fdchangecnt; ++i)	498	for (i = 0; i < fdchangecnt; ++i)
385	{	499	{
386	int fd = fdchanges [i];	500	int fd = fdchanges [i];
387	ANFD *anfd = anfds + fd;	501	ANFD *anfd = anfds + fd;
388	struct ev_io *w;	502	ev_io *w;
389		503
390	int events = 0;	504	int events = 0;
391		505
392	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)
393	events |= w->events;	507	events |= w->events;
394		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
395	anfd->reify = 0;	518	anfd->reify = 0;
396		519
397	method_modify (EV_A_ fd, anfd->events, events);	520	backend_modify (EV_A_ fd, anfd->events, events);
398	anfd->events = events;	521	anfd->events = events;
399	}	522	}
400		523
401	fdchangecnt = 0;	524	fdchangecnt = 0;
402	}	525	}
403		526
404	static void	527	void inline_size
405	fd_change (EV_P_ int fd)	528	fd_change (EV_P_ int fd)
406	{	529	{
407	if (anfds [fd].reify)	530	if (expect_false (anfds [fd].reify))
408	return;	531	return;
409		532
410	anfds [fd].reify = 1;	533	anfds [fd].reify = 1;
411		534
412	++fdchangecnt;	535	++fdchangecnt;
413	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	536	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
414	fdchanges [fdchangecnt - 1] = fd;	537	fdchanges [fdchangecnt - 1] = fd;
415	}	538	}
416		539
417	static void	540	void inline_speed
418	fd_kill (EV_P_ int fd)	541	fd_kill (EV_P_ int fd)
419	{	542	{
420	struct ev_io *w;	543	ev_io *w;
421		544
422	while ((w = (struct ev_io *)anfds [fd].head))	545	while ((w = (ev_io *)anfds [fd].head))
423	{	546	{
424	ev_io_stop (EV_A_ w);	547	ev_io_stop (EV_A_ w);
425	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);
426	}	549	}
427	}	550	}
428		551
429	static int	552	int inline_size
430	fd_valid (int fd)	553	fd_valid (int fd)
431	{	554	{
432	#ifdef WIN32	555	#ifdef _WIN32
433	return !!win32_get_osfhandle (fd);	556	return _get_osfhandle (fd) != -1;
434	#else	557	#else
435	return fcntl (fd, F_GETFD) != -1;	558	return fcntl (fd, F_GETFD) != -1;
436	#endif	559	#endif
437	}	560	}
438		561
439	/* called on EBADF to verify fds */	562	/* called on EBADF to verify fds */
440	static void	563	static void noinline
441	fd_ebadf (EV_P)	564	fd_ebadf (EV_P)
442	{	565	{
443	int fd;	566	int fd;
444		567
445	for (fd = 0; fd < anfdmax; ++fd)	568	for (fd = 0; fd < anfdmax; ++fd)
…		…
447	if (!fd_valid (fd) == -1 && errno == EBADF)	570	if (!fd_valid (fd) == -1 && errno == EBADF)
448	fd_kill (EV_A_ fd);	571	fd_kill (EV_A_ fd);
449	}	572	}
450		573
451	/* 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 */
452	static void	575	static void noinline
453	fd_enomem (EV_P)	576	fd_enomem (EV_P)
454	{	577	{
455	int fd;	578	int fd;
456		579
457	for (fd = anfdmax; fd--; )	580	for (fd = anfdmax; fd--; )
…		…
460	fd_kill (EV_A_ fd);	583	fd_kill (EV_A_ fd);
461	return;	584	return;
462	}	585	}
463	}	586	}
464		587
465	/* 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 */
466	static void	589	static void noinline
467	fd_rearm_all (EV_P)	590	fd_rearm_all (EV_P)
468	{	591	{
469	int fd;	592	int fd;
470		593
471	/* this should be highly optimised to not do anything but set a flag */
472	for (fd = 0; fd < anfdmax; ++fd)	594	for (fd = 0; fd < anfdmax; ++fd)
473	if (anfds [fd].events)	595	if (anfds [fd].events)
474	{	596	{
475	anfds [fd].events = 0;	597	anfds [fd].events = 0;
476	fd_change (EV_A_ fd);	598	fd_change (EV_A_ fd);
477	}	599	}
478	}	600	}
479		601
480	/*****************************************************************************/	602	/*****************************************************************************/
481		603
482	static void	604	void inline_speed
483	upheap (WT *heap, int k)	605	upheap (WT *heap, int k)
484	{	606	{
485	WT w = heap [k];	607	WT w = heap [k];
486		608
487	while (k && heap [k >> 1]->at > w->at)	609	while (k && heap [k >> 1]->at > w->at)
…		…
494	heap [k] = w;	616	heap [k] = w;
495	((W)heap [k])->active = k + 1;	617	((W)heap [k])->active = k + 1;
496		618
497	}	619	}
498		620
499	static void	621	void inline_speed
500	downheap (WT *heap, int N, int k)	622	downheap (WT *heap, int N, int k)
501	{	623	{
502	WT w = heap [k];	624	WT w = heap [k];
503		625
504	while (k < (N >> 1))	626	while (k < (N >> 1))
…		…
518		640
519	heap [k] = w;	641	heap [k] = w;
520	((W)heap [k])->active = k + 1;	642	((W)heap [k])->active = k + 1;
521	}	643	}
522		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
523	/*****************************************************************************/	652	/*****************************************************************************/
524		653
525	typedef struct	654	typedef struct
526	{	655	{
527	WL head;	656	WL head;
…		…
531	static ANSIG *signals;	660	static ANSIG *signals;
532	static int signalmax;	661	static int signalmax;
533		662
534	static int sigpipe [2];	663	static int sigpipe [2];
535	static sig_atomic_t volatile gotsig;	664	static sig_atomic_t volatile gotsig;
536	static struct ev_io sigev;	665	static ev_io sigev;
537		666
538	static void	667	void inline_size
539	signals_init (ANSIG *base, int count)	668	signals_init (ANSIG *base, int count)
540	{	669	{
541	while (count--)	670	while (count--)
542	{	671	{
543	base->head = 0;	672	base->head = 0;
…		…
548	}	677	}
549		678
550	static void	679	static void
551	sighandler (int signum)	680	sighandler (int signum)
552	{	681	{
553	#if WIN32	682	#if _WIN32
554	signal (signum, sighandler);	683	signal (signum, sighandler);
555	#endif	684	#endif
556		685
557	signals [signum - 1].gotsig = 1;	686	signals [signum - 1].gotsig = 1;
558		687
559	if (!gotsig)	688	if (!gotsig)
560	{	689	{
561	int old_errno = errno;	690	int old_errno = errno;
562	gotsig = 1;	691	gotsig = 1;
563	#ifdef WIN32
564	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
565	#else
566	write (sigpipe [1], &signum, 1);	692	write (sigpipe [1], &signum, 1);
567	#endif
568	errno = old_errno;	693	errno = old_errno;
569	}	694	}
570	}	695	}
571		696
572	void	697	void noinline
573	ev_feed_signal_event (EV_P_ int signum)	698	ev_feed_signal_event (EV_P_ int signum)
574	{	699	{
575	WL w;	700	WL w;
576		701
577	#if EV_MULTIPLICITY	702	#if EV_MULTIPLICITY
578	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));
579	#endif	704	#endif
580		705
581	--signum;	706	--signum;
582		707
583	if (signum < 0 || signum >= signalmax)	708	if (signum < 0 || signum >= signalmax)
…		…
588	for (w = signals [signum].head; w; w = w->next)	713	for (w = signals [signum].head; w; w = w->next)
589	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	714	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
590	}	715	}
591		716
592	static void	717	static void
593	sigcb (EV_P_ struct ev_io *iow, int revents)	718	sigcb (EV_P_ ev_io *iow, int revents)
594	{	719	{
595	int signum;	720	int signum;
596		721
597	#ifdef WIN32
598	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
599	#else
600	read (sigpipe [0], &revents, 1);	722	read (sigpipe [0], &revents, 1);
601	#endif
602	gotsig = 0;	723	gotsig = 0;
603		724
604	for (signum = signalmax; signum--; )	725	for (signum = signalmax; signum--; )
605	if (signals [signum].gotsig)	726	if (signals [signum].gotsig)
606	ev_feed_signal_event (EV_A_ signum + 1);	727	ev_feed_signal_event (EV_A_ signum + 1);
607	}	728	}
608		729
609	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
610	siginit (EV_P)	743	siginit (EV_P)
611	{	744	{
612	#ifndef WIN32	745	fd_intern (sigpipe [0]);
613	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	746	fd_intern (sigpipe [1]);
614	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
615
616	/* rather than sort out wether we really need nb, set it */
617	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
618	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
619	#endif
620		747
621	ev_io_set (&sigev, sigpipe [0], EV_READ);	748	ev_io_set (&sigev, sigpipe [0], EV_READ);
622	ev_io_start (EV_A_ &sigev);	749	ev_io_start (EV_A_ &sigev);
623	ev_unref (EV_A); /* child watcher should not keep loop alive */	750	ev_unref (EV_A); /* child watcher should not keep loop alive */
624	}	751	}
625		752
626	/*****************************************************************************/	753	/*****************************************************************************/
627		754
628	static struct ev_child *childs [PID_HASHSIZE];	755	static ev_child *childs [EV_PID_HASHSIZE];
629		756
630	#ifndef WIN32	757	#ifndef _WIN32
631		758
632	static struct ev_signal childev;	759	static ev_signal childev;
633		760
634	#ifndef WCONTINUED	761	void inline_speed
635	# define WCONTINUED 0
636	#endif
637
638	static void
639	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)
640	{	763	{
641	struct ev_child *w;	764	ev_child *w;
642		765
643	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)
644	if (w->pid == pid || !w->pid)	767	if (w->pid == pid || !w->pid)
645	{	768	{
646	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	769	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
647	w->rpid = pid;	770	w->rpid = pid;
648	w->rstatus = status;	771	w->rstatus = status;
649	ev_feed_event (EV_A_ (W)w, EV_CHILD);	772	ev_feed_event (EV_A_ (W)w, EV_CHILD);
650	}	773	}
651	}	774	}
652		775
		776	#ifndef WCONTINUED
		777	# define WCONTINUED 0
		778	#endif
		779
653	static void	780	static void
654	childcb (EV_P_ struct ev_signal *sw, int revents)	781	childcb (EV_P_ ev_signal *sw, int revents)
655	{	782	{
656	int pid, status;	783	int pid, status;
657		784
		785	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
658	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	786	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
659	{	787	if (!WCONTINUED
		788	|| errno != EINVAL
		789	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		790	return;
		791
660	/* 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 */
661	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	794	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
662		795
663	child_reap (EV_A_ sw, pid, pid, status);	796	child_reap (EV_A_ sw, pid, pid, status);
		797	if (EV_PID_HASHSIZE > 1)
664	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 */
665	}
666	}	799	}
667		800
668	#endif	801	#endif
669		802
670	/*****************************************************************************/	803	/*****************************************************************************/
671		804
		805	#if EV_USE_PORT
		806	# include "ev_port.c"
		807	#endif
672	#if EV_USE_KQUEUE	808	#if EV_USE_KQUEUE
673	# include "ev_kqueue.c"	809	# include "ev_kqueue.c"
674	#endif	810	#endif
675	#if EV_USE_EPOLL	811	#if EV_USE_EPOLL
676	# include "ev_epoll.c"	812	# include "ev_epoll.c"
…		…
693	{	829	{
694	return EV_VERSION_MINOR;	830	return EV_VERSION_MINOR;
695	}	831	}
696		832
697	/* 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 */
698	static int	834	int inline_size
699	enable_secure (void)	835	enable_secure (void)
700	{	836	{
701	#ifdef WIN32	837	#ifdef _WIN32
702	return 0;	838	return 0;
703	#else	839	#else
704	return getuid () != geteuid ()	840	return getuid () != geteuid ()
705	|| getgid () != getegid ();	841	|| getgid () != getegid ();
706	#endif	842	#endif
707	}	843	}
708		844
709	int	845	unsigned int
710	ev_method (EV_P)	846	ev_supported_backends (void)
711	{	847	{
712	return method;	848	unsigned int flags = 0;
713	}
714		849
715	static void	850	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
716	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)
717	{	861	{
718	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)
719	{	895	{
720	#if EV_USE_MONOTONIC	896	#if EV_USE_MONOTONIC
721	{	897	{
722	struct timespec ts;	898	struct timespec ts;
723	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	899	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
724	have_monotonic = 1;	900	have_monotonic = 1;
725	}	901	}
726	#endif	902	#endif
727		903
728	rt_now = ev_time ();	904	ev_rt_now = ev_time ();
729	mn_now = get_clock ();	905	mn_now = get_clock ();
730	now_floor = mn_now;	906	now_floor = mn_now;
731	rtmn_diff = rt_now - mn_now;	907	rtmn_diff = ev_rt_now - mn_now;
732		908
733	if (methods == EVMETHOD_AUTO)	909	/* pid check not overridable via env */
734	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"))
735	methods = atoi (getenv ("LIBEV_METHODS"));	918	flags = atoi (getenv ("LIBEV_FLAGS"));
736	else
737	methods = EVMETHOD_ANY;
738		919
739	method = 0;	920	if (!(flags & 0x0000ffffUL))
		921	flags |= ev_recommended_backends ();
		922
		923	backend = 0;
		924	backend_fd = -1;
740	#if EV_USE_WIN32	925	#if EV_USE_INOTIFY
741	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);
742	#endif	931	#endif
743	#if EV_USE_KQUEUE	932	#if EV_USE_KQUEUE
744	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	933	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
745	#endif	934	#endif
746	#if EV_USE_EPOLL	935	#if EV_USE_EPOLL
747	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	936	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
748	#endif	937	#endif
749	#if EV_USE_POLL	938	#if EV_USE_POLL
750	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	939	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
751	#endif	940	#endif
752	#if EV_USE_SELECT	941	#if EV_USE_SELECT
753	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	942	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
754	#endif	943	#endif
755		944
756	ev_watcher_init (&sigev, sigcb);	945	ev_init (&sigev, sigcb);
757	ev_set_priority (&sigev, EV_MAXPRI);	946	ev_set_priority (&sigev, EV_MAXPRI);
758	}	947	}
759	}	948	}
760		949
761	void	950	static void noinline
762	loop_destroy (EV_P)	951	loop_destroy (EV_P)
763	{	952	{
764	int i;	953	int i;
765		954
766	#if EV_USE_WIN32	955	#if EV_USE_INOTIFY
767	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);
768	#endif	965	#endif
769	#if EV_USE_KQUEUE	966	#if EV_USE_KQUEUE
770	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	967	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
771	#endif	968	#endif
772	#if EV_USE_EPOLL	969	#if EV_USE_EPOLL
773	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	970	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
774	#endif	971	#endif
775	#if EV_USE_POLL	972	#if EV_USE_POLL
776	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	973	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
777	#endif	974	#endif
778	#if EV_USE_SELECT	975	#if EV_USE_SELECT
779	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	976	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
780	#endif	977	#endif
781		978
782	for (i = NUMPRI; i--; )	979	for (i = NUMPRI; i--; )
783	array_free (pending, [i]);	980	array_free (pending, [i]);
784		981
785	/* have to use the microsoft-never-gets-it-right macro */	982	/* have to use the microsoft-never-gets-it-right macro */
786	array_free_microshit (fdchange);	983	array_free (fdchange, EMPTY0);
787	array_free_microshit (timer);	984	array_free (timer, EMPTY0);
788	array_free_microshit (periodic);	985	#if EV_PERIODIC_ENABLE
789	array_free_microshit (idle);	986	array_free (periodic, EMPTY0);
790	array_free_microshit (prepare);	987	#endif
791	array_free_microshit (check);	988	array_free (idle, EMPTY0);
		989	array_free (prepare, EMPTY0);
		990	array_free (check, EMPTY0);
792		991
793	method = 0;	992	backend = 0;
794	}	993	}
795		994
796	static void	995	void inline_size infy_fork (EV_P);
		996
		997	void inline_size
797	loop_fork (EV_P)	998	loop_fork (EV_P)
798	{	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
799	#if EV_USE_EPOLL	1006	#if EV_USE_EPOLL
800	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1007	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
801	#endif	1008	#endif
802	#if EV_USE_KQUEUE	1009	#if EV_USE_INOTIFY
803	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1010	infy_fork (EV_A);
804	#endif	1011	#endif
805		1012
806	if (ev_is_active (&sigev))	1013	if (ev_is_active (&sigev))
807	{	1014	{
808	/* default loop */	1015	/* default loop */
…		…
821	postfork = 0;	1028	postfork = 0;
822	}	1029	}
823		1030
824	#if EV_MULTIPLICITY	1031	#if EV_MULTIPLICITY
825	struct ev_loop *	1032	struct ev_loop *
826	ev_loop_new (int methods)	1033	ev_loop_new (unsigned int flags)
827	{	1034	{
828	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));
829		1036
830	memset (loop, 0, sizeof (struct ev_loop));	1037	memset (loop, 0, sizeof (struct ev_loop));
831		1038
832	loop_init (EV_A_ methods);	1039	loop_init (EV_A_ flags);
833		1040
834	if (ev_method (EV_A))	1041	if (ev_backend (EV_A))
835	return loop;	1042	return loop;
836		1043
837	return 0;	1044	return 0;
838	}	1045	}
839		1046
…		…
852		1059
853	#endif	1060	#endif
854		1061
855	#if EV_MULTIPLICITY	1062	#if EV_MULTIPLICITY
856	struct ev_loop *	1063	struct ev_loop *
		1064	ev_default_loop_init (unsigned int flags)
857	#else	1065	#else
858	int	1066	int
		1067	ev_default_loop (unsigned int flags)
859	#endif	1068	#endif
860	ev_default_loop (int methods)
861	{	1069	{
862	if (sigpipe [0] == sigpipe [1])	1070	if (sigpipe [0] == sigpipe [1])
863	if (pipe (sigpipe))	1071	if (pipe (sigpipe))
864	return 0;	1072	return 0;
865		1073
866	if (!default_loop)	1074	if (!ev_default_loop_ptr)
867	{	1075	{
868	#if EV_MULTIPLICITY	1076	#if EV_MULTIPLICITY
869	struct ev_loop *loop = default_loop = &default_loop_struct;	1077	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
870	#else	1078	#else
871	default_loop = 1;	1079	ev_default_loop_ptr = 1;
872	#endif	1080	#endif
873		1081
874	loop_init (EV_A_ methods);	1082	loop_init (EV_A_ flags);
875		1083
876	if (ev_method (EV_A))	1084	if (ev_backend (EV_A))
877	{	1085	{
878	siginit (EV_A);	1086	siginit (EV_A);
879		1087
880	#ifndef WIN32	1088	#ifndef _WIN32
881	ev_signal_init (&childev, childcb, SIGCHLD);	1089	ev_signal_init (&childev, childcb, SIGCHLD);
882	ev_set_priority (&childev, EV_MAXPRI);	1090	ev_set_priority (&childev, EV_MAXPRI);
883	ev_signal_start (EV_A_ &childev);	1091	ev_signal_start (EV_A_ &childev);
884	ev_unref (EV_A); /* child watcher should not keep loop alive */	1092	ev_unref (EV_A); /* child watcher should not keep loop alive */
885	#endif	1093	#endif
886	}	1094	}
887	else	1095	else
888	default_loop = 0;	1096	ev_default_loop_ptr = 0;
889	}	1097	}
890		1098
891	return default_loop;	1099	return ev_default_loop_ptr;
892	}	1100	}
893		1101
894	void	1102	void
895	ev_default_destroy (void)	1103	ev_default_destroy (void)
896	{	1104	{
897	#if EV_MULTIPLICITY	1105	#if EV_MULTIPLICITY
898	struct ev_loop *loop = default_loop;	1106	struct ev_loop *loop = ev_default_loop_ptr;
899	#endif	1107	#endif
900		1108
901	#ifndef WIN32	1109	#ifndef _WIN32
902	ev_ref (EV_A); /* child watcher */	1110	ev_ref (EV_A); /* child watcher */
903	ev_signal_stop (EV_A_ &childev);	1111	ev_signal_stop (EV_A_ &childev);
904	#endif	1112	#endif
905		1113
906	ev_ref (EV_A); /* signal watcher */	1114	ev_ref (EV_A); /* signal watcher */
…		…
914		1122
915	void	1123	void
916	ev_default_fork (void)	1124	ev_default_fork (void)
917	{	1125	{
918	#if EV_MULTIPLICITY	1126	#if EV_MULTIPLICITY
919	struct ev_loop *loop = default_loop;	1127	struct ev_loop *loop = ev_default_loop_ptr;
920	#endif	1128	#endif
921		1129
922	if (method)	1130	if (backend)
923	postfork = 1;	1131	postfork = 1;
924	}	1132	}
925		1133
926	/*****************************************************************************/	1134	/*****************************************************************************/
927		1135
928	static int	1136	int inline_size
929	any_pending (EV_P)	1137	any_pending (EV_P)
930	{	1138	{
931	int pri;	1139	int pri;
932		1140
933	for (pri = NUMPRI; pri--; )	1141	for (pri = NUMPRI; pri--; )
…		…
935	return 1;	1143	return 1;
936		1144
937	return 0;	1145	return 0;
938	}	1146	}
939		1147
940	static void	1148	void inline_speed
941	call_pending (EV_P)	1149	call_pending (EV_P)
942	{	1150	{
943	int pri;	1151	int pri;
944		1152
945	for (pri = NUMPRI; pri--; )	1153	for (pri = NUMPRI; pri--; )
946	while (pendingcnt [pri])	1154	while (pendingcnt [pri])
947	{	1155	{
948	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1156	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
949		1157
950	if (p->w)	1158	if (expect_true (p->w))
951	{	1159	{
		1160	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1161
952	p->w->pending = 0;	1162	p->w->pending = 0;
953	p->w->cb (EV_A_ p->w, p->events);	1163	EV_CB_INVOKE (p->w, p->events);
954	}	1164	}
955	}	1165	}
956	}	1166	}
957		1167
958	static void	1168	void inline_size
959	timers_reify (EV_P)	1169	timers_reify (EV_P)
960	{	1170	{
961	while (timercnt && ((WT)timers [0])->at <= mn_now)	1171	while (timercnt && ((WT)timers [0])->at <= mn_now)
962	{	1172	{
963	struct ev_timer *w = timers [0];	1173	ev_timer *w = timers [0];
964		1174
965	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1175	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
966		1176
967	/* first reschedule or stop timer */	1177	/* first reschedule or stop timer */
968	if (w->repeat)	1178	if (w->repeat)
969	{	1179	{
970	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
971	((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
972	downheap ((WT *)timers, timercnt, 0);	1186	downheap ((WT *)timers, timercnt, 0);
973	}	1187	}
974	else	1188	else
975	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1189	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
976		1190
977	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1191	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
978	}	1192	}
979	}	1193	}
980		1194
981	static void	1195	#if EV_PERIODIC_ENABLE
		1196	void inline_size
982	periodics_reify (EV_P)	1197	periodics_reify (EV_P)
983	{	1198	{
984	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1199	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
985	{	1200	{
986	struct ev_periodic *w = periodics [0];	1201	ev_periodic *w = periodics [0];
987		1202
988	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1203	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
989		1204
990	/* first reschedule or stop timer */	1205	/* first reschedule or stop timer */
991	if (w->reschedule_cb)	1206	if (w->reschedule_cb)
992	{	1207	{
993	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);
994
995	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));
996	downheap ((WT *)periodics, periodiccnt, 0);	1210	downheap ((WT *)periodics, periodiccnt, 0);
997	}	1211	}
998	else if (w->interval)	1212	else if (w->interval)
999	{	1213	{
1000	((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;
1001	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));
1002	downheap ((WT *)periodics, periodiccnt, 0);	1216	downheap ((WT *)periodics, periodiccnt, 0);
1003	}	1217	}
1004	else	1218	else
1005	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1219	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1006		1220
1007	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1221	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1008	}	1222	}
1009	}	1223	}
1010		1224
1011	static void	1225	static void noinline
1012	periodics_reschedule (EV_P)	1226	periodics_reschedule (EV_P)
1013	{	1227	{
1014	int i;	1228	int i;
1015		1229
1016	/* adjust periodics after time jump */	1230	/* adjust periodics after time jump */
1017	for (i = 0; i < periodiccnt; ++i)	1231	for (i = 0; i < periodiccnt; ++i)
1018	{	1232	{
1019	struct ev_periodic *w = periodics [i];	1233	ev_periodic *w = periodics [i];
1020		1234
1021	if (w->reschedule_cb)	1235	if (w->reschedule_cb)
1022	((WT)w)->at = w->reschedule_cb (w, rt_now);	1236	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1023	else if (w->interval)	1237	else if (w->interval)
1024	((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;
1025	}	1239	}
1026		1240
1027	/* now rebuild the heap */	1241	/* now rebuild the heap */
1028	for (i = periodiccnt >> 1; i--; )	1242	for (i = periodiccnt >> 1; i--; )
1029	downheap ((WT *)periodics, periodiccnt, i);	1243	downheap ((WT *)periodics, periodiccnt, i);
1030	}	1244	}
		1245	#endif
1031		1246
1032	inline int	1247	int inline_size
1033	time_update_monotonic (EV_P)	1248	time_update_monotonic (EV_P)
1034	{	1249	{
1035	mn_now = get_clock ();	1250	mn_now = get_clock ();
1036		1251
1037	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1252	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1038	{	1253	{
1039	rt_now = rtmn_diff + mn_now;	1254	ev_rt_now = rtmn_diff + mn_now;
1040	return 0;	1255	return 0;
1041	}	1256	}
1042	else	1257	else
1043	{	1258	{
1044	now_floor = mn_now;	1259	now_floor = mn_now;
1045	rt_now = ev_time ();	1260	ev_rt_now = ev_time ();
1046	return 1;	1261	return 1;
1047	}	1262	}
1048	}	1263	}
1049		1264
1050	static void	1265	void inline_size
1051	time_update (EV_P)	1266	time_update (EV_P)
1052	{	1267	{
1053	int i;	1268	int i;
1054		1269
1055	#if EV_USE_MONOTONIC	1270	#if EV_USE_MONOTONIC
…		…
1057	{	1272	{
1058	if (time_update_monotonic (EV_A))	1273	if (time_update_monotonic (EV_A))
1059	{	1274	{
1060	ev_tstamp odiff = rtmn_diff;	1275	ev_tstamp odiff = rtmn_diff;
1061		1276
1062	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; )
1063	{	1286	{
1064	rtmn_diff = rt_now - mn_now;	1287	rtmn_diff = ev_rt_now - mn_now;
1065		1288
1066	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1289	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1067	return; /* all is well */	1290	return; /* all is well */
1068		1291
1069	rt_now = ev_time ();	1292	ev_rt_now = ev_time ();
1070	mn_now = get_clock ();	1293	mn_now = get_clock ();
1071	now_floor = mn_now;	1294	now_floor = mn_now;
1072	}	1295	}
1073		1296
		1297	# if EV_PERIODIC_ENABLE
1074	periodics_reschedule (EV_A);	1298	periodics_reschedule (EV_A);
		1299	# endif
1075	/* no timer adjustment, as the monotonic clock doesn't jump */	1300	/* no timer adjustment, as the monotonic clock doesn't jump */
1076	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1301	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1077	}	1302	}
1078	}	1303	}
1079	else	1304	else
1080	#endif	1305	#endif
1081	{	1306	{
1082	rt_now = ev_time ();	1307	ev_rt_now = ev_time ();
1083		1308
1084	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))
1085	{	1310	{
		1311	#if EV_PERIODIC_ENABLE
1086	periodics_reschedule (EV_A);	1312	periodics_reschedule (EV_A);
		1313	#endif
1087		1314
1088	/* 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 */
1089	for (i = 0; i < timercnt; ++i)	1316	for (i = 0; i < timercnt; ++i)
1090	((WT)timers [i])->at += rt_now - mn_now;	1317	((WT)timers [i])->at += ev_rt_now - mn_now;
1091	}	1318	}
1092		1319
1093	mn_now = rt_now;	1320	mn_now = ev_rt_now;
1094	}	1321	}
1095	}	1322	}
1096		1323
1097	void	1324	void
1098	ev_ref (EV_P)	1325	ev_ref (EV_P)
…		…
1109	static int loop_done;	1336	static int loop_done;
1110		1337
1111	void	1338	void
1112	ev_loop (EV_P_ int flags)	1339	ev_loop (EV_P_ int flags)
1113	{	1340	{
1114	double block;
1115	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1341	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1342	? EVUNLOOP_ONE
		1343	: EVUNLOOP_CANCEL;
1116		1344
1117	do	1345	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1346
		1347	while (activecnt)
1118	{	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
1119	/* queue check watchers (and execute them) */	1368	/* queue check watchers (and execute them) */
1120	if (expect_false (preparecnt))	1369	if (expect_false (preparecnt))
1121	{	1370	{
1122	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1371	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1123	call_pending (EV_A);	1372	call_pending (EV_A);
…		…
1129		1378
1130	/* update fd-related kernel structures */	1379	/* update fd-related kernel structures */
1131	fd_reify (EV_A);	1380	fd_reify (EV_A);
1132		1381
1133	/* calculate blocking time */	1382	/* calculate blocking time */
		1383	{
		1384	ev_tstamp block;
1134		1385
1135	/* we only need this for !monotonic clock or timers, but as we basically	1386	if (flags & EVLOOP_NONBLOCK || idlecnt)
1136	always have timers, we just calculate it always */	1387	block = 0.; /* do not block at all */
		1388	else
		1389	{
		1390	/* update time to cancel out callback processing overhead */
1137	#if EV_USE_MONOTONIC	1391	#if EV_USE_MONOTONIC
1138	if (expect_true (have_monotonic))	1392	if (expect_true (have_monotonic))
1139	time_update_monotonic (EV_A);	1393	time_update_monotonic (EV_A);
1140	else	1394	else
1141	#endif	1395	#endif
1142	{	1396	{
1143	rt_now = ev_time ();	1397	ev_rt_now = ev_time ();
1144	mn_now = rt_now;	1398	mn_now = ev_rt_now;
1145	}	1399	}
1146		1400
1147	if (flags & EVLOOP_NONBLOCK || idlecnt)
1148	block = 0.;
1149	else
1150	{
1151	block = MAX_BLOCKTIME;	1401	block = MAX_BLOCKTIME;
1152		1402
1153	if (timercnt)	1403	if (timercnt)
1154	{	1404	{
1155	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1405	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1156	if (block > to) block = to;	1406	if (block > to) block = to;
1157	}	1407	}
1158		1408
		1409	#if EV_PERIODIC_ENABLE
1159	if (periodiccnt)	1410	if (periodiccnt)
1160	{	1411	{
1161	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1412	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1162	if (block > to) block = to;	1413	if (block > to) block = to;
1163	}	1414	}
		1415	#endif
1164		1416
1165	if (block < 0.) block = 0.;	1417	if (expect_false (block < 0.)) block = 0.;
1166	}	1418	}
1167		1419
1168	method_poll (EV_A_ block);	1420	backend_poll (EV_A_ block);
		1421	}
1169		1422
1170	/* update rt_now, do magic */	1423	/* update ev_rt_now, do magic */
1171	time_update (EV_A);	1424	time_update (EV_A);
1172		1425
1173	/* queue pending timers and reschedule them */	1426	/* queue pending timers and reschedule them */
1174	timers_reify (EV_A); /* relative timers called last */	1427	timers_reify (EV_A); /* relative timers called last */
		1428	#if EV_PERIODIC_ENABLE
1175	periodics_reify (EV_A); /* absolute timers called first */	1429	periodics_reify (EV_A); /* absolute timers called first */
		1430	#endif
1176		1431
1177	/* queue idle watchers unless io or timers are pending */	1432	/* queue idle watchers unless other events are pending */
1178	if (idlecnt && !any_pending (EV_A))	1433	if (idlecnt && !any_pending (EV_A))
1179	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1434	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1180		1435
1181	/* queue check watchers, to be executed first */	1436	/* queue check watchers, to be executed first */
1182	if (checkcnt)	1437	if (expect_false (checkcnt))
1183	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1438	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1184		1439
1185	call_pending (EV_A);	1440	call_pending (EV_A);
1186	}
1187	while (activecnt && !loop_done);
1188		1441
1189	if (loop_done != 2)	1442	if (expect_false (loop_done))
1190	loop_done = 0;	1443	break;
		1444	}
		1445
		1446	if (loop_done == EVUNLOOP_ONE)
		1447	loop_done = EVUNLOOP_CANCEL;
1191	}	1448	}
1192		1449
1193	void	1450	void
1194	ev_unloop (EV_P_ int how)	1451	ev_unloop (EV_P_ int how)
1195	{	1452	{
1196	loop_done = how;	1453	loop_done = how;
1197	}	1454	}
1198		1455
1199	/*****************************************************************************/	1456	/*****************************************************************************/
1200		1457
1201	inline void	1458	void inline_size
1202	wlist_add (WL *head, WL elem)	1459	wlist_add (WL *head, WL elem)
1203	{	1460	{
1204	elem->next = *head;	1461	elem->next = *head;
1205	*head = elem;	1462	*head = elem;
1206	}	1463	}
1207		1464
1208	inline void	1465	void inline_size
1209	wlist_del (WL *head, WL elem)	1466	wlist_del (WL *head, WL elem)
1210	{	1467	{
1211	while (*head)	1468	while (*head)
1212	{	1469	{
1213	if (*head == elem)	1470	if (*head == elem)
…		…
1218		1475
1219	head = &(*head)->next;	1476	head = &(*head)->next;
1220	}	1477	}
1221	}	1478	}
1222		1479
1223	inline void	1480	void inline_speed
1224	ev_clear_pending (EV_P_ W w)	1481	ev_clear_pending (EV_P_ W w)
1225	{	1482	{
1226	if (w->pending)	1483	if (w->pending)
1227	{	1484	{
1228	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1485	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1229	w->pending = 0;	1486	w->pending = 0;
1230	}	1487	}
1231	}	1488	}
1232		1489
1233	inline void	1490	void inline_speed
1234	ev_start (EV_P_ W w, int active)	1491	ev_start (EV_P_ W w, int active)
1235	{	1492	{
1236	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1493	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1237	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1494	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1238		1495
1239	w->active = active;	1496	w->active = active;
1240	ev_ref (EV_A);	1497	ev_ref (EV_A);
1241	}	1498	}
1242		1499
1243	inline void	1500	void inline_size
1244	ev_stop (EV_P_ W w)	1501	ev_stop (EV_P_ W w)
1245	{	1502	{
1246	ev_unref (EV_A);	1503	ev_unref (EV_A);
1247	w->active = 0;	1504	w->active = 0;
1248	}	1505	}
1249		1506
1250	/*****************************************************************************/	1507	/*****************************************************************************/
1251		1508
1252	void	1509	void
1253	ev_io_start (EV_P_ struct ev_io *w)	1510	ev_io_start (EV_P_ ev_io *w)
1254	{	1511	{
1255	int fd = w->fd;	1512	int fd = w->fd;
1256		1513
1257	if (ev_is_active (w))	1514	if (expect_false (ev_is_active (w)))
1258	return;	1515	return;
1259		1516
1260	assert (("ev_io_start called with negative fd", fd >= 0));	1517	assert (("ev_io_start called with negative fd", fd >= 0));
1261		1518
1262	ev_start (EV_A_ (W)w, 1);	1519	ev_start (EV_A_ (W)w, 1);
…		…
1265		1522
1266	fd_change (EV_A_ fd);	1523	fd_change (EV_A_ fd);
1267	}	1524	}
1268		1525
1269	void	1526	void
1270	ev_io_stop (EV_P_ struct ev_io *w)	1527	ev_io_stop (EV_P_ ev_io *w)
1271	{	1528	{
1272	ev_clear_pending (EV_A_ (W)w);	1529	ev_clear_pending (EV_A_ (W)w);
1273	if (!ev_is_active (w))	1530	if (expect_false (!ev_is_active (w)))
1274	return;	1531	return;
		1532
		1533	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1275		1534
1276	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1535	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1277	ev_stop (EV_A_ (W)w);	1536	ev_stop (EV_A_ (W)w);
1278		1537
1279	fd_change (EV_A_ w->fd);	1538	fd_change (EV_A_ w->fd);
1280	}	1539	}
1281		1540
1282	void	1541	void
1283	ev_timer_start (EV_P_ struct ev_timer *w)	1542	ev_timer_start (EV_P_ ev_timer *w)
1284	{	1543	{
1285	if (ev_is_active (w))	1544	if (expect_false (ev_is_active (w)))
1286	return;	1545	return;
1287		1546
1288	((WT)w)->at += mn_now;	1547	((WT)w)->at += mn_now;
1289		1548
1290	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1549	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1291		1550
1292	ev_start (EV_A_ (W)w, ++timercnt);	1551	ev_start (EV_A_ (W)w, ++timercnt);
1293	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1552	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1294	timers [timercnt - 1] = w;	1553	timers [timercnt - 1] = w;
1295	upheap ((WT *)timers, timercnt - 1);	1554	upheap ((WT *)timers, timercnt - 1);
1296		1555
		1556	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1557	}
		1558
		1559	void
		1560	ev_timer_stop (EV_P_ ev_timer *w)
		1561	{
		1562	ev_clear_pending (EV_A_ (W)w);
		1563	if (expect_false (!ev_is_active (w)))
		1564	return;
		1565
1297	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1566	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1298	}
1299		1567
1300	void	1568	{
1301	ev_timer_stop (EV_P_ struct ev_timer *w)	1569	int active = ((W)w)->active;
1302	{
1303	ev_clear_pending (EV_A_ (W)w);
1304	if (!ev_is_active (w))
1305	return;
1306		1570
1307	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1571	if (expect_true (--active < --timercnt))
1308
1309	if (((W)w)->active < timercnt--)
1310	{	1572	{
1311	timers [((W)w)->active - 1] = timers [timercnt];	1573	timers [active] = timers [timercnt];
1312	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1574	adjustheap ((WT *)timers, timercnt, active);
1313	}	1575	}
		1576	}
1314		1577
1315	((WT)w)->at = w->repeat;	1578	((WT)w)->at -= mn_now;
1316		1579
1317	ev_stop (EV_A_ (W)w);	1580	ev_stop (EV_A_ (W)w);
1318	}	1581	}
1319		1582
1320	void	1583	void
1321	ev_timer_again (EV_P_ struct ev_timer *w)	1584	ev_timer_again (EV_P_ ev_timer *w)
1322	{	1585	{
1323	if (ev_is_active (w))	1586	if (ev_is_active (w))
1324	{	1587	{
1325	if (w->repeat)	1588	if (w->repeat)
1326	{	1589	{
1327	((WT)w)->at = mn_now + w->repeat;	1590	((WT)w)->at = mn_now + w->repeat;
1328	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1591	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1329	}	1592	}
1330	else	1593	else
1331	ev_timer_stop (EV_A_ w);	1594	ev_timer_stop (EV_A_ w);
1332	}	1595	}
1333	else if (w->repeat)	1596	else if (w->repeat)
		1597	{
		1598	w->at = w->repeat;
1334	ev_timer_start (EV_A_ w);	1599	ev_timer_start (EV_A_ w);
		1600	}
1335	}	1601	}
1336		1602
		1603	#if EV_PERIODIC_ENABLE
1337	void	1604	void
1338	ev_periodic_start (EV_P_ struct ev_periodic *w)	1605	ev_periodic_start (EV_P_ ev_periodic *w)
1339	{	1606	{
1340	if (ev_is_active (w))	1607	if (expect_false (ev_is_active (w)))
1341	return;	1608	return;
1342		1609
1343	if (w->reschedule_cb)	1610	if (w->reschedule_cb)
1344	((WT)w)->at = w->reschedule_cb (w, rt_now);	1611	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1345	else if (w->interval)	1612	else if (w->interval)
1346	{	1613	{
1347	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1614	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1348	/* this formula differs from the one in periodic_reify because we do not always round up */	1615	/* this formula differs from the one in periodic_reify because we do not always round up */
1349	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1616	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1350	}	1617	}
1351		1618
1352	ev_start (EV_A_ (W)w, ++periodiccnt);	1619	ev_start (EV_A_ (W)w, ++periodiccnt);
1353	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1620	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1354	periodics [periodiccnt - 1] = w;	1621	periodics [periodiccnt - 1] = w;
1355	upheap ((WT *)periodics, periodiccnt - 1);	1622	upheap ((WT *)periodics, periodiccnt - 1);
1356		1623
		1624	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1625	}
		1626
		1627	void
		1628	ev_periodic_stop (EV_P_ ev_periodic *w)
		1629	{
		1630	ev_clear_pending (EV_A_ (W)w);
		1631	if (expect_false (!ev_is_active (w)))
		1632	return;
		1633
1357	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1634	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1358	}
1359		1635
1360	void	1636	{
1361	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1637	int active = ((W)w)->active;
1362	{
1363	ev_clear_pending (EV_A_ (W)w);
1364	if (!ev_is_active (w))
1365	return;
1366		1638
1367	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1639	if (expect_true (--active < --periodiccnt))
1368
1369	if (((W)w)->active < periodiccnt--)
1370	{	1640	{
1371	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1641	periodics [active] = periodics [periodiccnt];
1372	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1642	adjustheap ((WT *)periodics, periodiccnt, active);
1373	}	1643	}
		1644	}
1374		1645
1375	ev_stop (EV_A_ (W)w);	1646	ev_stop (EV_A_ (W)w);
1376	}	1647	}
1377		1648
1378	void	1649	void
1379	ev_periodic_again (EV_P_ struct ev_periodic *w)	1650	ev_periodic_again (EV_P_ ev_periodic *w)
1380	{	1651	{
		1652	/* TODO: use adjustheap and recalculation */
1381	ev_periodic_stop (EV_A_ w);	1653	ev_periodic_stop (EV_A_ w);
1382	ev_periodic_start (EV_A_ w);	1654	ev_periodic_start (EV_A_ w);
1383	}	1655	}
1384		1656	#endif
1385	void
1386	ev_idle_start (EV_P_ struct ev_idle *w)
1387	{
1388	if (ev_is_active (w))
1389	return;
1390
1391	ev_start (EV_A_ (W)w, ++idlecnt);
1392	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1393	idles [idlecnt - 1] = w;
1394	}
1395
1396	void
1397	ev_idle_stop (EV_P_ struct ev_idle *w)
1398	{
1399	ev_clear_pending (EV_A_ (W)w);
1400	if (ev_is_active (w))
1401	return;
1402
1403	idles [((W)w)->active - 1] = idles [--idlecnt];
1404	ev_stop (EV_A_ (W)w);
1405	}
1406
1407	void
1408	ev_prepare_start (EV_P_ struct ev_prepare *w)
1409	{
1410	if (ev_is_active (w))
1411	return;
1412
1413	ev_start (EV_A_ (W)w, ++preparecnt);
1414	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1415	prepares [preparecnt - 1] = w;
1416	}
1417
1418	void
1419	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1420	{
1421	ev_clear_pending (EV_A_ (W)w);
1422	if (ev_is_active (w))
1423	return;
1424
1425	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1426	ev_stop (EV_A_ (W)w);
1427	}
1428
1429	void
1430	ev_check_start (EV_P_ struct ev_check *w)
1431	{
1432	if (ev_is_active (w))
1433	return;
1434
1435	ev_start (EV_A_ (W)w, ++checkcnt);
1436	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1437	checks [checkcnt - 1] = w;
1438	}
1439
1440	void
1441	ev_check_stop (EV_P_ struct ev_check *w)
1442	{
1443	ev_clear_pending (EV_A_ (W)w);
1444	if (ev_is_active (w))
1445	return;
1446
1447	checks [((W)w)->active - 1] = checks [--checkcnt];
1448	ev_stop (EV_A_ (W)w);
1449	}
1450		1657
1451	#ifndef SA_RESTART	1658	#ifndef SA_RESTART
1452	# define SA_RESTART 0	1659	# define SA_RESTART 0
1453	#endif	1660	#endif
1454		1661
1455	void	1662	void
1456	ev_signal_start (EV_P_ struct ev_signal *w)	1663	ev_signal_start (EV_P_ ev_signal *w)
1457	{	1664	{
1458	#if EV_MULTIPLICITY	1665	#if EV_MULTIPLICITY
1459	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1666	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1460	#endif	1667	#endif
1461	if (ev_is_active (w))	1668	if (expect_false (ev_is_active (w)))
1462	return;	1669	return;
1463		1670
1464	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1671	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1465		1672
1466	ev_start (EV_A_ (W)w, 1);	1673	ev_start (EV_A_ (W)w, 1);
1467	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1674	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1468	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1675	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1469		1676
1470	if (!((WL)w)->next)	1677	if (!((WL)w)->next)
1471	{	1678	{
1472	#if WIN32	1679	#if _WIN32
1473	signal (w->signum, sighandler);	1680	signal (w->signum, sighandler);
1474	#else	1681	#else
1475	struct sigaction sa;	1682	struct sigaction sa;
1476	sa.sa_handler = sighandler;	1683	sa.sa_handler = sighandler;
1477	sigfillset (&sa.sa_mask);	1684	sigfillset (&sa.sa_mask);
…		…
1480	#endif	1687	#endif
1481	}	1688	}
1482	}	1689	}
1483		1690
1484	void	1691	void
1485	ev_signal_stop (EV_P_ struct ev_signal *w)	1692	ev_signal_stop (EV_P_ ev_signal *w)
1486	{	1693	{
1487	ev_clear_pending (EV_A_ (W)w);	1694	ev_clear_pending (EV_A_ (W)w);
1488	if (!ev_is_active (w))	1695	if (expect_false (!ev_is_active (w)))
1489	return;	1696	return;
1490		1697
1491	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1698	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1492	ev_stop (EV_A_ (W)w);	1699	ev_stop (EV_A_ (W)w);
1493		1700
1494	if (!signals [w->signum - 1].head)	1701	if (!signals [w->signum - 1].head)
1495	signal (w->signum, SIG_DFL);	1702	signal (w->signum, SIG_DFL);
1496	}	1703	}
1497		1704
1498	void	1705	void
1499	ev_child_start (EV_P_ struct ev_child *w)	1706	ev_child_start (EV_P_ ev_child *w)
1500	{	1707	{
1501	#if EV_MULTIPLICITY	1708	#if EV_MULTIPLICITY
1502	assert (("child watchers are only supported in the default loop", loop == default_loop));	1709	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1503	#endif	1710	#endif
1504	if (ev_is_active (w))	1711	if (expect_false (ev_is_active (w)))
1505	return;	1712	return;
1506		1713
1507	ev_start (EV_A_ (W)w, 1);	1714	ev_start (EV_A_ (W)w, 1);
1508	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1715	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1509	}	1716	}
1510		1717
1511	void	1718	void
1512	ev_child_stop (EV_P_ struct ev_child *w)	1719	ev_child_stop (EV_P_ ev_child *w)
1513	{	1720	{
1514	ev_clear_pending (EV_A_ (W)w);	1721	ev_clear_pending (EV_A_ (W)w);
1515	if (ev_is_active (w))	1722	if (expect_false (!ev_is_active (w)))
1516	return;	1723	return;
1517		1724
1518	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1725	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1519	ev_stop (EV_A_ (W)w);	1726	ev_stop (EV_A_ (W)w);
1520	}	1727	}
1521		1728
		1729	#if EV_STAT_ENABLE
		1730
		1731	# ifdef _WIN32
		1732	# undef lstat
		1733	# define lstat(a,b) _stati64 (a,b)
		1734	# endif
		1735
		1736	#define DEF_STAT_INTERVAL 5.0074891
		1737	#define MIN_STAT_INTERVAL 0.1074891
		1738
		1739	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1740
		1741	#if EV_USE_INOTIFY
		1742	# define EV_INOTIFY_BUFSIZE 8192
		1743
		1744	static void noinline
		1745	infy_add (EV_P_ ev_stat *w)
		1746	{
		1747	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);
		1748
		1749	if (w->wd < 0)
		1750	{
		1751	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1752
		1753	/* monitor some parent directory for speedup hints */
		1754	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1755	{
		1756	char path [4096];
		1757	strcpy (path, w->path);
		1758
		1759	do
		1760	{
		1761	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1762	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1763
		1764	char *pend = strrchr (path, '/');
		1765
		1766	if (!pend)
		1767	break; /* whoops, no '/', complain to your admin */
		1768
		1769	*pend = 0;
		1770	w->wd = inotify_add_watch (fs_fd, path, mask);
		1771	}
		1772	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1773	}
		1774	}
		1775	else
		1776	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1777
		1778	if (w->wd >= 0)
		1779	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1780	}
		1781
		1782	static void noinline
		1783	infy_del (EV_P_ ev_stat *w)
		1784	{
		1785	int slot;
		1786	int wd = w->wd;
		1787
		1788	if (wd < 0)
		1789	return;
		1790
		1791	w->wd = -2;
		1792	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1793	wlist_del (&fs_hash [slot].head, (WL)w);
		1794
		1795	/* remove this watcher, if others are watching it, they will rearm */
		1796	inotify_rm_watch (fs_fd, wd);
		1797	}
		1798
		1799	static void noinline
		1800	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1801	{
		1802	if (slot < 0)
		1803	/* overflow, need to check for all hahs slots */
		1804	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1805	infy_wd (EV_A_ slot, wd, ev);
		1806	else
		1807	{
		1808	WL w_;
		1809
		1810	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1811	{
		1812	ev_stat *w = (ev_stat *)w_;
		1813	w_ = w_->next; /* lets us remove this watcher and all before it */
		1814
		1815	if (w->wd == wd || wd == -1)
		1816	{
		1817	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1818	{
		1819	w->wd = -1;
		1820	infy_add (EV_A_ w); /* re-add, no matter what */
		1821	}
		1822
		1823	stat_timer_cb (EV_A_ &w->timer, 0);
		1824	}
		1825	}
		1826	}
		1827	}
		1828
		1829	static void
		1830	infy_cb (EV_P_ ev_io *w, int revents)
		1831	{
		1832	char buf [EV_INOTIFY_BUFSIZE];
		1833	struct inotify_event *ev = (struct inotify_event *)buf;
		1834	int ofs;
		1835	int len = read (fs_fd, buf, sizeof (buf));
		1836
		1837	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1838	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1839	}
		1840
		1841	void inline_size
		1842	infy_init (EV_P)
		1843	{
		1844	if (fs_fd != -2)
		1845	return;
		1846
		1847	fs_fd = inotify_init ();
		1848
		1849	if (fs_fd >= 0)
		1850	{
		1851	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1852	ev_set_priority (&fs_w, EV_MAXPRI);
		1853	ev_io_start (EV_A_ &fs_w);
		1854	}
		1855	}
		1856
		1857	void inline_size
		1858	infy_fork (EV_P)
		1859	{
		1860	int slot;
		1861
		1862	if (fs_fd < 0)
		1863	return;
		1864
		1865	close (fs_fd);
		1866	fs_fd = inotify_init ();
		1867
		1868	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1869	{
		1870	WL w_ = fs_hash [slot].head;
		1871	fs_hash [slot].head = 0;
		1872
		1873	while (w_)
		1874	{
		1875	ev_stat *w = (ev_stat *)w_;
		1876	w_ = w_->next; /* lets us add this watcher */
		1877
		1878	w->wd = -1;
		1879
		1880	if (fs_fd >= 0)
		1881	infy_add (EV_A_ w); /* re-add, no matter what */
		1882	else
		1883	ev_timer_start (EV_A_ &w->timer);
		1884	}
		1885
		1886	}
		1887	}
		1888
		1889	#endif
		1890
		1891	void
		1892	ev_stat_stat (EV_P_ ev_stat *w)
		1893	{
		1894	if (lstat (w->path, &w->attr) < 0)
		1895	w->attr.st_nlink = 0;
		1896	else if (!w->attr.st_nlink)
		1897	w->attr.st_nlink = 1;
		1898	}
		1899
		1900	static void noinline
		1901	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1902	{
		1903	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1904
		1905	/* we copy this here each the time so that */
		1906	/* prev has the old value when the callback gets invoked */
		1907	w->prev = w->attr;
		1908	ev_stat_stat (EV_A_ w);
		1909
		1910	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1911	if (
		1912	w->prev.st_dev != w->attr.st_dev
		1913	|| w->prev.st_ino != w->attr.st_ino
		1914	|| w->prev.st_mode != w->attr.st_mode
		1915	|| w->prev.st_nlink != w->attr.st_nlink
		1916	|| w->prev.st_uid != w->attr.st_uid
		1917	|| w->prev.st_gid != w->attr.st_gid
		1918	|| w->prev.st_rdev != w->attr.st_rdev
		1919	|| w->prev.st_size != w->attr.st_size
		1920	|| w->prev.st_atime != w->attr.st_atime
		1921	|| w->prev.st_mtime != w->attr.st_mtime
		1922	|| w->prev.st_ctime != w->attr.st_ctime
		1923	) {
		1924	#if EV_USE_INOTIFY
		1925	infy_del (EV_A_ w);
		1926	infy_add (EV_A_ w);
		1927	ev_stat_stat (EV_A_ w); /* avoid race... */
		1928	#endif
		1929
		1930	ev_feed_event (EV_A_ w, EV_STAT);
		1931	}
		1932	}
		1933
		1934	void
		1935	ev_stat_start (EV_P_ ev_stat *w)
		1936	{
		1937	if (expect_false (ev_is_active (w)))
		1938	return;
		1939
		1940	/* since we use memcmp, we need to clear any padding data etc. */
		1941	memset (&w->prev, 0, sizeof (ev_statdata));
		1942	memset (&w->attr, 0, sizeof (ev_statdata));
		1943
		1944	ev_stat_stat (EV_A_ w);
		1945
		1946	if (w->interval < MIN_STAT_INTERVAL)
		1947	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1948
		1949	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1950	ev_set_priority (&w->timer, ev_priority (w));
		1951
		1952	#if EV_USE_INOTIFY
		1953	infy_init (EV_A);
		1954
		1955	if (fs_fd >= 0)
		1956	infy_add (EV_A_ w);
		1957	else
		1958	#endif
		1959	ev_timer_start (EV_A_ &w->timer);
		1960
		1961	ev_start (EV_A_ (W)w, 1);
		1962	}
		1963
		1964	void
		1965	ev_stat_stop (EV_P_ ev_stat *w)
		1966	{
		1967	ev_clear_pending (EV_A_ (W)w);
		1968	if (expect_false (!ev_is_active (w)))
		1969	return;
		1970
		1971	#if EV_USE_INOTIFY
		1972	infy_del (EV_A_ w);
		1973	#endif
		1974	ev_timer_stop (EV_A_ &w->timer);
		1975
		1976	ev_stop (EV_A_ (W)w);
		1977	}
		1978	#endif
		1979
		1980	void
		1981	ev_idle_start (EV_P_ ev_idle *w)
		1982	{
		1983	if (expect_false (ev_is_active (w)))
		1984	return;
		1985
		1986	ev_start (EV_A_ (W)w, ++idlecnt);
		1987	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1988	idles [idlecnt - 1] = w;
		1989	}
		1990
		1991	void
		1992	ev_idle_stop (EV_P_ ev_idle *w)
		1993	{
		1994	ev_clear_pending (EV_A_ (W)w);
		1995	if (expect_false (!ev_is_active (w)))
		1996	return;
		1997
		1998	{
		1999	int active = ((W)w)->active;
		2000	idles [active - 1] = idles [--idlecnt];
		2001	((W)idles [active - 1])->active = active;
		2002	}
		2003
		2004	ev_stop (EV_A_ (W)w);
		2005	}
		2006
		2007	void
		2008	ev_prepare_start (EV_P_ ev_prepare *w)
		2009	{
		2010	if (expect_false (ev_is_active (w)))
		2011	return;
		2012
		2013	ev_start (EV_A_ (W)w, ++preparecnt);
		2014	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2015	prepares [preparecnt - 1] = w;
		2016	}
		2017
		2018	void
		2019	ev_prepare_stop (EV_P_ ev_prepare *w)
		2020	{
		2021	ev_clear_pending (EV_A_ (W)w);
		2022	if (expect_false (!ev_is_active (w)))
		2023	return;
		2024
		2025	{
		2026	int active = ((W)w)->active;
		2027	prepares [active - 1] = prepares [--preparecnt];
		2028	((W)prepares [active - 1])->active = active;
		2029	}
		2030
		2031	ev_stop (EV_A_ (W)w);
		2032	}
		2033
		2034	void
		2035	ev_check_start (EV_P_ ev_check *w)
		2036	{
		2037	if (expect_false (ev_is_active (w)))
		2038	return;
		2039
		2040	ev_start (EV_A_ (W)w, ++checkcnt);
		2041	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2042	checks [checkcnt - 1] = w;
		2043	}
		2044
		2045	void
		2046	ev_check_stop (EV_P_ ev_check *w)
		2047	{
		2048	ev_clear_pending (EV_A_ (W)w);
		2049	if (expect_false (!ev_is_active (w)))
		2050	return;
		2051
		2052	{
		2053	int active = ((W)w)->active;
		2054	checks [active - 1] = checks [--checkcnt];
		2055	((W)checks [active - 1])->active = active;
		2056	}
		2057
		2058	ev_stop (EV_A_ (W)w);
		2059	}
		2060
		2061	#if EV_EMBED_ENABLE
		2062	void noinline
		2063	ev_embed_sweep (EV_P_ ev_embed *w)
		2064	{
		2065	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2066	}
		2067
		2068	static void
		2069	embed_cb (EV_P_ ev_io *io, int revents)
		2070	{
		2071	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2072
		2073	if (ev_cb (w))
		2074	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2075	else
		2076	ev_embed_sweep (loop, w);
		2077	}
		2078
		2079	void
		2080	ev_embed_start (EV_P_ ev_embed *w)
		2081	{
		2082	if (expect_false (ev_is_active (w)))
		2083	return;
		2084
		2085	{
		2086	struct ev_loop *loop = w->loop;
		2087	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2088	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2089	}
		2090
		2091	ev_set_priority (&w->io, ev_priority (w));
		2092	ev_io_start (EV_A_ &w->io);
		2093
		2094	ev_start (EV_A_ (W)w, 1);
		2095	}
		2096
		2097	void
		2098	ev_embed_stop (EV_P_ ev_embed *w)
		2099	{
		2100	ev_clear_pending (EV_A_ (W)w);
		2101	if (expect_false (!ev_is_active (w)))
		2102	return;
		2103
		2104	ev_io_stop (EV_A_ &w->io);
		2105
		2106	ev_stop (EV_A_ (W)w);
		2107	}
		2108	#endif
		2109
		2110	#if EV_FORK_ENABLE
		2111	void
		2112	ev_fork_start (EV_P_ ev_fork *w)
		2113	{
		2114	if (expect_false (ev_is_active (w)))
		2115	return;
		2116
		2117	ev_start (EV_A_ (W)w, ++forkcnt);
		2118	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2119	forks [forkcnt - 1] = w;
		2120	}
		2121
		2122	void
		2123	ev_fork_stop (EV_P_ ev_fork *w)
		2124	{
		2125	ev_clear_pending (EV_A_ (W)w);
		2126	if (expect_false (!ev_is_active (w)))
		2127	return;
		2128
		2129	{
		2130	int active = ((W)w)->active;
		2131	forks [active - 1] = forks [--forkcnt];
		2132	((W)forks [active - 1])->active = active;
		2133	}
		2134
		2135	ev_stop (EV_A_ (W)w);
		2136	}
		2137	#endif
		2138
1522	/*****************************************************************************/	2139	/*****************************************************************************/
1523		2140
1524	struct ev_once	2141	struct ev_once
1525	{	2142	{
1526	struct ev_io io;	2143	ev_io io;
1527	struct ev_timer to;	2144	ev_timer to;
1528	void (*cb)(int revents, void *arg);	2145	void (*cb)(int revents, void *arg);
1529	void *arg;	2146	void *arg;
1530	};	2147	};
1531		2148
1532	static void	2149	static void
…		…
1541		2158
1542	cb (revents, arg);	2159	cb (revents, arg);
1543	}	2160	}
1544		2161
1545	static void	2162	static void
1546	once_cb_io (EV_P_ struct ev_io *w, int revents)	2163	once_cb_io (EV_P_ ev_io *w, int revents)
1547	{	2164	{
1548	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2165	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1549	}	2166	}
1550		2167
1551	static void	2168	static void
1552	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2169	once_cb_to (EV_P_ ev_timer *w, int revents)
1553	{	2170	{
1554	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2171	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1555	}	2172	}
1556		2173
1557	void	2174	void
1558	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2175	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1559	{	2176	{
1560	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	2177	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1561		2178
1562	if (!once)	2179	if (expect_false (!once))
		2180	{
1563	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2181	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1564	else	2182	return;
1565	{	2183	}
		2184
1566	once->cb = cb;	2185	once->cb = cb;
1567	once->arg = arg;	2186	once->arg = arg;
1568		2187
1569	ev_watcher_init (&once->io, once_cb_io);	2188	ev_init (&once->io, once_cb_io);
1570	if (fd >= 0)	2189	if (fd >= 0)
1571	{	2190	{
1572	ev_io_set (&once->io, fd, events);	2191	ev_io_set (&once->io, fd, events);
1573	ev_io_start (EV_A_ &once->io);	2192	ev_io_start (EV_A_ &once->io);
1574	}	2193	}
1575		2194
1576	ev_watcher_init (&once->to, once_cb_to);	2195	ev_init (&once->to, once_cb_to);
1577	if (timeout >= 0.)	2196	if (timeout >= 0.)
1578	{	2197	{
1579	ev_timer_set (&once->to, timeout, 0.);	2198	ev_timer_set (&once->to, timeout, 0.);
1580	ev_timer_start (EV_A_ &once->to);	2199	ev_timer_start (EV_A_ &once->to);
1581	}
1582	}	2200	}
1583	}	2201	}
1584		2202
		2203	#ifdef __cplusplus
		2204	}
		2205	#endif
		2206

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