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Comparing libev/ev.c (file contents):
Revision 1.78 by root, Thu Nov 8 21:08:56 2007 UTC vs.
Revision 1.160 by root, Sat Dec 1 22:57:20 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	};
225	# undef VAR	344	#undef VAR
		345	};
226	# include "ev_wrap.h"	346	#include "ev_wrap.h"
		347
		348	static struct ev_loop default_loop_struct;
		349	struct ev_loop *ev_default_loop_ptr;
227		350
228	#else	351	#else
229		352
		353	ev_tstamp ev_rt_now;
230	# define VAR(name,decl) static decl;	354	#define VAR(name,decl) static decl;
231	# include "ev_vars.h"	355	#include "ev_vars.h"
232	# undef VAR	356	#undef VAR
		357
		358	static int ev_default_loop_ptr;
233		359
234	#endif	360	#endif
235		361
236	/*****************************************************************************/	362	/*****************************************************************************/
237		363
238	inline ev_tstamp	364	ev_tstamp
239	ev_time (void)	365	ev_time (void)
240	{	366	{
241	#if EV_USE_REALTIME	367	#if EV_USE_REALTIME
242	struct timespec ts;	368	struct timespec ts;
243	clock_gettime (CLOCK_REALTIME, &ts);	369	clock_gettime (CLOCK_REALTIME, &ts);
…		…
247	gettimeofday (&tv, 0);	373	gettimeofday (&tv, 0);
248	return tv.tv_sec + tv.tv_usec * 1e-6;	374	return tv.tv_sec + tv.tv_usec * 1e-6;
249	#endif	375	#endif
250	}	376	}
251		377
252	inline ev_tstamp	378	ev_tstamp inline_size
253	get_clock (void)	379	get_clock (void)
254	{	380	{
255	#if EV_USE_MONOTONIC	381	#if EV_USE_MONOTONIC
256	if (expect_true (have_monotonic))	382	if (expect_true (have_monotonic))
257	{	383	{
…		…
262	#endif	388	#endif
263		389
264	return ev_time ();	390	return ev_time ();
265	}	391	}
266		392
		393	#if EV_MULTIPLICITY
267	ev_tstamp	394	ev_tstamp
268	ev_now (EV_P)	395	ev_now (EV_P)
269	{	396	{
270	return rt_now;	397	return ev_rt_now;
271	}	398	}
		399	#endif
272		400
273	#define array_roundsize(type,n) ((n) | 4 & ~3)	401	#define array_roundsize(type,n) (((n) | 4) & ~3)
274		402
275	#define array_needsize(type,base,cur,cnt,init) \	403	#define array_needsize(type,base,cur,cnt,init) \
276	if (expect_false ((cnt) > cur)) \	404	if (expect_false ((cnt) > cur)) \
277	{ \	405	{ \
278	int newcnt = cur; \	406	int newcnt = cur; \
…		…
293	stem ## max = array_roundsize (stem ## cnt >> 1); \	421	stem ## max = array_roundsize (stem ## cnt >> 1); \
294	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	422	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
295	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	423	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
296	}	424	}
297		425
298	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
299	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
300	#define array_free_microshit(stem) \
301	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
302
303	#define array_free(stem, idx) \	426	#define array_free(stem, idx) \
304	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;
305		428
306	/*****************************************************************************/	429	/*****************************************************************************/
307		430
308	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
309	anfds_init (ANFD *base, int count)	460	anfds_init (ANFD *base, int count)
310	{	461	{
311	while (count--)	462	while (count--)
312	{	463	{
313	base->head = 0;	464	base->head = 0;
…		…
316		467
317	++base;	468	++base;
318	}	469	}
319	}	470	}
320		471
321	void	472	void inline_speed
322	ev_feed_event (EV_P_ void *w, int revents)
323	{
324	W w_ = (W)w;
325
326	if (w_->pending)
327	{
328	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
329	return;
330	}
331
332	w_->pending = ++pendingcnt [ABSPRI (w_)];
333	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
334	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
335	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
336	}
337
338	static void
339	queue_events (EV_P_ W *events, int eventcnt, int type)
340	{
341	int i;
342
343	for (i = 0; i < eventcnt; ++i)
344	ev_feed_event (EV_A_ events [i], type);
345	}
346
347	static void
348	fd_event (EV_P_ int fd, int events)	473	fd_event (EV_P_ int fd, int revents)
349	{	474	{
350	ANFD *anfd = anfds + fd;	475	ANFD *anfd = anfds + fd;
351	struct ev_io *w;	476	ev_io *w;
352		477
353	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)
354	{	479	{
355	int ev = w->events & events;	480	int ev = w->events & revents;
356		481
357	if (ev)	482	if (ev)
358	ev_feed_event (EV_A_ (W)w, ev);	483	ev_feed_event (EV_A_ (W)w, ev);
359	}	484	}
360	}	485	}
361		486
362	/*****************************************************************************/	487	void
		488	ev_feed_fd_event (EV_P_ int fd, int revents)
		489	{
		490	fd_event (EV_A_ fd, revents);
		491	}
363		492
364	static void	493	void inline_size
365	fd_reify (EV_P)	494	fd_reify (EV_P)
366	{	495	{
367	int i;	496	int i;
368		497
369	for (i = 0; i < fdchangecnt; ++i)	498	for (i = 0; i < fdchangecnt; ++i)
370	{	499	{
371	int fd = fdchanges [i];	500	int fd = fdchanges [i];
372	ANFD *anfd = anfds + fd;	501	ANFD *anfd = anfds + fd;
373	struct ev_io *w;	502	ev_io *w;
374		503
375	int events = 0;	504	int events = 0;
376		505
377	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)
378	events |= w->events;	507	events |= w->events;
379		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
380	anfd->reify = 0;	518	anfd->reify = 0;
381		519
382	method_modify (EV_A_ fd, anfd->events, events);	520	backend_modify (EV_A_ fd, anfd->events, events);
383	anfd->events = events;	521	anfd->events = events;
384	}	522	}
385		523
386	fdchangecnt = 0;	524	fdchangecnt = 0;
387	}	525	}
388		526
389	static void	527	void inline_size
390	fd_change (EV_P_ int fd)	528	fd_change (EV_P_ int fd)
391	{	529	{
392	if (anfds [fd].reify)	530	if (expect_false (anfds [fd].reify))
393	return;	531	return;
394		532
395	anfds [fd].reify = 1;	533	anfds [fd].reify = 1;
396		534
397	++fdchangecnt;	535	++fdchangecnt;
398	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	536	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
399	fdchanges [fdchangecnt - 1] = fd;	537	fdchanges [fdchangecnt - 1] = fd;
400	}	538	}
401		539
402	static void	540	void inline_speed
403	fd_kill (EV_P_ int fd)	541	fd_kill (EV_P_ int fd)
404	{	542	{
405	struct ev_io *w;	543	ev_io *w;
406		544
407	while ((w = (struct ev_io *)anfds [fd].head))	545	while ((w = (ev_io *)anfds [fd].head))
408	{	546	{
409	ev_io_stop (EV_A_ w);	547	ev_io_stop (EV_A_ w);
410	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);
411	}	549	}
412	}	550	}
413		551
414	static int	552	int inline_size
415	fd_valid (int fd)	553	fd_valid (int fd)
416	{	554	{
417	#ifdef WIN32	555	#ifdef _WIN32
418	return !!win32_get_osfhandle (fd);	556	return _get_osfhandle (fd) != -1;
419	#else	557	#else
420	return fcntl (fd, F_GETFD) != -1;	558	return fcntl (fd, F_GETFD) != -1;
421	#endif	559	#endif
422	}	560	}
423		561
424	/* called on EBADF to verify fds */	562	/* called on EBADF to verify fds */
425	static void	563	static void noinline
426	fd_ebadf (EV_P)	564	fd_ebadf (EV_P)
427	{	565	{
428	int fd;	566	int fd;
429		567
430	for (fd = 0; fd < anfdmax; ++fd)	568	for (fd = 0; fd < anfdmax; ++fd)
…		…
432	if (!fd_valid (fd) == -1 && errno == EBADF)	570	if (!fd_valid (fd) == -1 && errno == EBADF)
433	fd_kill (EV_A_ fd);	571	fd_kill (EV_A_ fd);
434	}	572	}
435		573
436	/* 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 */
437	static void	575	static void noinline
438	fd_enomem (EV_P)	576	fd_enomem (EV_P)
439	{	577	{
440	int fd;	578	int fd;
441		579
442	for (fd = anfdmax; fd--; )	580	for (fd = anfdmax; fd--; )
…		…
445	fd_kill (EV_A_ fd);	583	fd_kill (EV_A_ fd);
446	return;	584	return;
447	}	585	}
448	}	586	}
449		587
450	/* 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 */
451	static void	589	static void noinline
452	fd_rearm_all (EV_P)	590	fd_rearm_all (EV_P)
453	{	591	{
454	int fd;	592	int fd;
455		593
456	/* this should be highly optimised to not do anything but set a flag */
457	for (fd = 0; fd < anfdmax; ++fd)	594	for (fd = 0; fd < anfdmax; ++fd)
458	if (anfds [fd].events)	595	if (anfds [fd].events)
459	{	596	{
460	anfds [fd].events = 0;	597	anfds [fd].events = 0;
461	fd_change (EV_A_ fd);	598	fd_change (EV_A_ fd);
462	}	599	}
463	}	600	}
464		601
465	/*****************************************************************************/	602	/*****************************************************************************/
466		603
467	static void	604	void inline_speed
468	upheap (WT *heap, int k)	605	upheap (WT *heap, int k)
469	{	606	{
470	WT w = heap [k];	607	WT w = heap [k];
471		608
472	while (k && heap [k >> 1]->at > w->at)	609	while (k && heap [k >> 1]->at > w->at)
…		…
479	heap [k] = w;	616	heap [k] = w;
480	((W)heap [k])->active = k + 1;	617	((W)heap [k])->active = k + 1;
481		618
482	}	619	}
483		620
484	static void	621	void inline_speed
485	downheap (WT *heap, int N, int k)	622	downheap (WT *heap, int N, int k)
486	{	623	{
487	WT w = heap [k];	624	WT w = heap [k];
488		625
489	while (k < (N >> 1))	626	while (k < (N >> 1))
…		…
503		640
504	heap [k] = w;	641	heap [k] = w;
505	((W)heap [k])->active = k + 1;	642	((W)heap [k])->active = k + 1;
506	}	643	}
507		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
508	/*****************************************************************************/	652	/*****************************************************************************/
509		653
510	typedef struct	654	typedef struct
511	{	655	{
512	WL head;	656	WL head;
…		…
516	static ANSIG *signals;	660	static ANSIG *signals;
517	static int signalmax;	661	static int signalmax;
518		662
519	static int sigpipe [2];	663	static int sigpipe [2];
520	static sig_atomic_t volatile gotsig;	664	static sig_atomic_t volatile gotsig;
521	static struct ev_io sigev;	665	static ev_io sigev;
522		666
523	static void	667	void inline_size
524	signals_init (ANSIG *base, int count)	668	signals_init (ANSIG *base, int count)
525	{	669	{
526	while (count--)	670	while (count--)
527	{	671	{
528	base->head = 0;	672	base->head = 0;
…		…
533	}	677	}
534		678
535	static void	679	static void
536	sighandler (int signum)	680	sighandler (int signum)
537	{	681	{
538	#if WIN32	682	#if _WIN32
539	signal (signum, sighandler);	683	signal (signum, sighandler);
540	#endif	684	#endif
541		685
542	signals [signum - 1].gotsig = 1;	686	signals [signum - 1].gotsig = 1;
543		687
544	if (!gotsig)	688	if (!gotsig)
545	{	689	{
546	int old_errno = errno;	690	int old_errno = errno;
547	gotsig = 1;	691	gotsig = 1;
548	#ifdef WIN32
549	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
550	#else
551	write (sigpipe [1], &signum, 1);	692	write (sigpipe [1], &signum, 1);
552	#endif
553	errno = old_errno;	693	errno = old_errno;
554	}	694	}
555	}	695	}
556		696
		697	void noinline
		698	ev_feed_signal_event (EV_P_ int signum)
		699	{
		700	WL w;
		701
		702	#if EV_MULTIPLICITY
		703	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		704	#endif
		705
		706	--signum;
		707
		708	if (signum < 0 || signum >= signalmax)
		709	return;
		710
		711	signals [signum].gotsig = 0;
		712
		713	for (w = signals [signum].head; w; w = w->next)
		714	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		715	}
		716
557	static void	717	static void
558	sigcb (EV_P_ struct ev_io *iow, int revents)	718	sigcb (EV_P_ ev_io *iow, int revents)
559	{	719	{
560	WL w;
561	int signum;	720	int signum;
562		721
563	#ifdef WIN32
564	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
565	#else
566	read (sigpipe [0], &revents, 1);	722	read (sigpipe [0], &revents, 1);
567	#endif
568	gotsig = 0;	723	gotsig = 0;
569		724
570	for (signum = signalmax; signum--; )	725	for (signum = signalmax; signum--; )
571	if (signals [signum].gotsig)	726	if (signals [signum].gotsig)
572	{	727	ev_feed_signal_event (EV_A_ signum + 1);
573	signals [signum].gotsig = 0;
574
575	for (w = signals [signum].head; w; w = w->next)
576	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
577	}
578	}	728	}
579		729
580	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
581	siginit (EV_P)	743	siginit (EV_P)
582	{	744	{
583	#ifndef WIN32	745	fd_intern (sigpipe [0]);
584	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	746	fd_intern (sigpipe [1]);
585	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
586
587	/* rather than sort out wether we really need nb, set it */
588	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
589	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
590	#endif
591		747
592	ev_io_set (&sigev, sigpipe [0], EV_READ);	748	ev_io_set (&sigev, sigpipe [0], EV_READ);
593	ev_io_start (EV_A_ &sigev);	749	ev_io_start (EV_A_ &sigev);
594	ev_unref (EV_A); /* child watcher should not keep loop alive */	750	ev_unref (EV_A); /* child watcher should not keep loop alive */
595	}	751	}
596		752
597	/*****************************************************************************/	753	/*****************************************************************************/
598		754
599	static struct ev_child *childs [PID_HASHSIZE];	755	static ev_child *childs [EV_PID_HASHSIZE];
600		756
601	#ifndef WIN32	757	#ifndef _WIN32
602		758
603	static struct ev_signal childev;	759	static ev_signal childev;
604		760
605	#ifndef WCONTINUED	761	void inline_speed
606	# define WCONTINUED 0
607	#endif
608
609	static void
610	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)
611	{	763	{
612	struct ev_child *w;	764	ev_child *w;
613		765
614	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)
615	if (w->pid == pid || !w->pid)	767	if (w->pid == pid || !w->pid)
616	{	768	{
617	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	769	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
618	w->rpid = pid;	770	w->rpid = pid;
619	w->rstatus = status;	771	w->rstatus = status;
620	ev_feed_event (EV_A_ (W)w, EV_CHILD);	772	ev_feed_event (EV_A_ (W)w, EV_CHILD);
621	}	773	}
622	}	774	}
623		775
		776	#ifndef WCONTINUED
		777	# define WCONTINUED 0
		778	#endif
		779
624	static void	780	static void
625	childcb (EV_P_ struct ev_signal *sw, int revents)	781	childcb (EV_P_ ev_signal *sw, int revents)
626	{	782	{
627	int pid, status;	783	int pid, status;
628		784
		785	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
629	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	786	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
630	{	787	if (!WCONTINUED
		788	|| errno != EINVAL
		789	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		790	return;
		791
631	/* 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 */
632	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	794	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
633		795
634	child_reap (EV_A_ sw, pid, pid, status);	796	child_reap (EV_A_ sw, pid, pid, status);
		797	if (EV_PID_HASHSIZE > 1)
635	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 */
636	}
637	}	799	}
638		800
639	#endif	801	#endif
640		802
641	/*****************************************************************************/	803	/*****************************************************************************/
642		804
		805	#if EV_USE_PORT
		806	# include "ev_port.c"
		807	#endif
643	#if EV_USE_KQUEUE	808	#if EV_USE_KQUEUE
644	# include "ev_kqueue.c"	809	# include "ev_kqueue.c"
645	#endif	810	#endif
646	#if EV_USE_EPOLL	811	#if EV_USE_EPOLL
647	# include "ev_epoll.c"	812	# include "ev_epoll.c"
…		…
664	{	829	{
665	return EV_VERSION_MINOR;	830	return EV_VERSION_MINOR;
666	}	831	}
667		832
668	/* 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 */
669	static int	834	int inline_size
670	enable_secure (void)	835	enable_secure (void)
671	{	836	{
672	#ifdef WIN32	837	#ifdef _WIN32
673	return 0;	838	return 0;
674	#else	839	#else
675	return getuid () != geteuid ()	840	return getuid () != geteuid ()
676	|| getgid () != getegid ();	841	|| getgid () != getegid ();
677	#endif	842	#endif
678	}	843	}
679		844
680	int	845	unsigned int
681	ev_method (EV_P)	846	ev_supported_backends (void)
682	{	847	{
683	return method;	848	unsigned int flags = 0;
684	}
685		849
686	static void	850	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
687	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)
688	{	861	{
689	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)
690	{	895	{
691	#if EV_USE_MONOTONIC	896	#if EV_USE_MONOTONIC
692	{	897	{
693	struct timespec ts;	898	struct timespec ts;
694	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	899	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
695	have_monotonic = 1;	900	have_monotonic = 1;
696	}	901	}
697	#endif	902	#endif
698		903
699	rt_now = ev_time ();	904	ev_rt_now = ev_time ();
700	mn_now = get_clock ();	905	mn_now = get_clock ();
701	now_floor = mn_now;	906	now_floor = mn_now;
702	rtmn_diff = rt_now - mn_now;	907	rtmn_diff = ev_rt_now - mn_now;
703		908
704	if (methods == EVMETHOD_AUTO)	909	/* pid check not overridable via env */
705	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"))
706	methods = atoi (getenv ("LIBEV_METHODS"));	918	flags = atoi (getenv ("LIBEV_FLAGS"));
707	else
708	methods = EVMETHOD_ANY;
709		919
710	method = 0;	920	if (!(flags & 0x0000ffffUL))
		921	flags |= ev_recommended_backends ();
		922
		923	backend = 0;
		924	backend_fd = -1;
711	#if EV_USE_WIN32	925	#if EV_USE_INOTIFY
712	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);
713	#endif	931	#endif
714	#if EV_USE_KQUEUE	932	#if EV_USE_KQUEUE
715	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	933	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
716	#endif	934	#endif
717	#if EV_USE_EPOLL	935	#if EV_USE_EPOLL
718	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	936	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
719	#endif	937	#endif
720	#if EV_USE_POLL	938	#if EV_USE_POLL
721	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	939	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
722	#endif	940	#endif
723	#if EV_USE_SELECT	941	#if EV_USE_SELECT
724	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	942	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
725	#endif	943	#endif
726		944
727	ev_watcher_init (&sigev, sigcb);	945	ev_init (&sigev, sigcb);
728	ev_set_priority (&sigev, EV_MAXPRI);	946	ev_set_priority (&sigev, EV_MAXPRI);
729	}	947	}
730	}	948	}
731		949
732	void	950	static void noinline
733	loop_destroy (EV_P)	951	loop_destroy (EV_P)
734	{	952	{
735	int i;	953	int i;
736		954
737	#if EV_USE_WIN32	955	#if EV_USE_INOTIFY
738	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);
739	#endif	965	#endif
740	#if EV_USE_KQUEUE	966	#if EV_USE_KQUEUE
741	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	967	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
742	#endif	968	#endif
743	#if EV_USE_EPOLL	969	#if EV_USE_EPOLL
744	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	970	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
745	#endif	971	#endif
746	#if EV_USE_POLL	972	#if EV_USE_POLL
747	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	973	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
748	#endif	974	#endif
749	#if EV_USE_SELECT	975	#if EV_USE_SELECT
750	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	976	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
751	#endif	977	#endif
752		978
753	for (i = NUMPRI; i--; )	979	for (i = NUMPRI; i--; )
754	array_free (pending, [i]);	980	array_free (pending, [i]);
755		981
756	/* have to use the microsoft-never-gets-it-right macro */	982	/* have to use the microsoft-never-gets-it-right macro */
757	array_free_microshit (fdchange);	983	array_free (fdchange, EMPTY0);
758	array_free_microshit (timer);	984	array_free (timer, EMPTY0);
759	array_free_microshit (periodic);	985	#if EV_PERIODIC_ENABLE
760	array_free_microshit (idle);	986	array_free (periodic, EMPTY0);
761	array_free_microshit (prepare);	987	#endif
762	array_free_microshit (check);	988	array_free (idle, EMPTY0);
		989	array_free (prepare, EMPTY0);
		990	array_free (check, EMPTY0);
763		991
764	method = 0;	992	backend = 0;
765	}	993	}
766		994
767	static void	995	void inline_size infy_fork (EV_P);
		996
		997	void inline_size
768	loop_fork (EV_P)	998	loop_fork (EV_P)
769	{	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
770	#if EV_USE_EPOLL	1006	#if EV_USE_EPOLL
771	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1007	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
772	#endif	1008	#endif
773	#if EV_USE_KQUEUE	1009	#if EV_USE_INOTIFY
774	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1010	infy_fork (EV_A);
775	#endif	1011	#endif
776		1012
777	if (ev_is_active (&sigev))	1013	if (ev_is_active (&sigev))
778	{	1014	{
779	/* default loop */	1015	/* default loop */
…		…
792	postfork = 0;	1028	postfork = 0;
793	}	1029	}
794		1030
795	#if EV_MULTIPLICITY	1031	#if EV_MULTIPLICITY
796	struct ev_loop *	1032	struct ev_loop *
797	ev_loop_new (int methods)	1033	ev_loop_new (unsigned int flags)
798	{	1034	{
799	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));
800		1036
801	memset (loop, 0, sizeof (struct ev_loop));	1037	memset (loop, 0, sizeof (struct ev_loop));
802		1038
803	loop_init (EV_A_ methods);	1039	loop_init (EV_A_ flags);
804		1040
805	if (ev_method (EV_A))	1041	if (ev_backend (EV_A))
806	return loop;	1042	return loop;
807		1043
808	return 0;	1044	return 0;
809	}	1045	}
810		1046
…		…
822	}	1058	}
823		1059
824	#endif	1060	#endif
825		1061
826	#if EV_MULTIPLICITY	1062	#if EV_MULTIPLICITY
827	struct ev_loop default_loop_struct;
828	static struct ev_loop *default_loop;
829
830	struct ev_loop *	1063	struct ev_loop *
		1064	ev_default_loop_init (unsigned int flags)
831	#else	1065	#else
832	static int default_loop;
833
834	int	1066	int
		1067	ev_default_loop (unsigned int flags)
835	#endif	1068	#endif
836	ev_default_loop (int methods)
837	{	1069	{
838	if (sigpipe [0] == sigpipe [1])	1070	if (sigpipe [0] == sigpipe [1])
839	if (pipe (sigpipe))	1071	if (pipe (sigpipe))
840	return 0;	1072	return 0;
841		1073
842	if (!default_loop)	1074	if (!ev_default_loop_ptr)
843	{	1075	{
844	#if EV_MULTIPLICITY	1076	#if EV_MULTIPLICITY
845	struct ev_loop *loop = default_loop = &default_loop_struct;	1077	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
846	#else	1078	#else
847	default_loop = 1;	1079	ev_default_loop_ptr = 1;
848	#endif	1080	#endif
849		1081
850	loop_init (EV_A_ methods);	1082	loop_init (EV_A_ flags);
851		1083
852	if (ev_method (EV_A))	1084	if (ev_backend (EV_A))
853	{	1085	{
854	siginit (EV_A);	1086	siginit (EV_A);
855		1087
856	#ifndef WIN32	1088	#ifndef _WIN32
857	ev_signal_init (&childev, childcb, SIGCHLD);	1089	ev_signal_init (&childev, childcb, SIGCHLD);
858	ev_set_priority (&childev, EV_MAXPRI);	1090	ev_set_priority (&childev, EV_MAXPRI);
859	ev_signal_start (EV_A_ &childev);	1091	ev_signal_start (EV_A_ &childev);
860	ev_unref (EV_A); /* child watcher should not keep loop alive */	1092	ev_unref (EV_A); /* child watcher should not keep loop alive */
861	#endif	1093	#endif
862	}	1094	}
863	else	1095	else
864	default_loop = 0;	1096	ev_default_loop_ptr = 0;
865	}	1097	}
866		1098
867	return default_loop;	1099	return ev_default_loop_ptr;
868	}	1100	}
869		1101
870	void	1102	void
871	ev_default_destroy (void)	1103	ev_default_destroy (void)
872	{	1104	{
873	#if EV_MULTIPLICITY	1105	#if EV_MULTIPLICITY
874	struct ev_loop *loop = default_loop;	1106	struct ev_loop *loop = ev_default_loop_ptr;
875	#endif	1107	#endif
876		1108
877	#ifndef WIN32	1109	#ifndef _WIN32
878	ev_ref (EV_A); /* child watcher */	1110	ev_ref (EV_A); /* child watcher */
879	ev_signal_stop (EV_A_ &childev);	1111	ev_signal_stop (EV_A_ &childev);
880	#endif	1112	#endif
881		1113
882	ev_ref (EV_A); /* signal watcher */	1114	ev_ref (EV_A); /* signal watcher */
…		…
890		1122
891	void	1123	void
892	ev_default_fork (void)	1124	ev_default_fork (void)
893	{	1125	{
894	#if EV_MULTIPLICITY	1126	#if EV_MULTIPLICITY
895	struct ev_loop *loop = default_loop;	1127	struct ev_loop *loop = ev_default_loop_ptr;
896	#endif	1128	#endif
897		1129
898	if (method)	1130	if (backend)
899	postfork = 1;	1131	postfork = 1;
900	}	1132	}
901		1133
902	/*****************************************************************************/	1134	/*****************************************************************************/
903		1135
904	static int	1136	int inline_size
905	any_pending (EV_P)	1137	any_pending (EV_P)
906	{	1138	{
907	int pri;	1139	int pri;
908		1140
909	for (pri = NUMPRI; pri--; )	1141	for (pri = NUMPRI; pri--; )
…		…
911	return 1;	1143	return 1;
912		1144
913	return 0;	1145	return 0;
914	}	1146	}
915		1147
916	static void	1148	void inline_speed
917	call_pending (EV_P)	1149	call_pending (EV_P)
918	{	1150	{
919	int pri;	1151	int pri;
920		1152
921	for (pri = NUMPRI; pri--; )	1153	for (pri = NUMPRI; pri--; )
922	while (pendingcnt [pri])	1154	while (pendingcnt [pri])
923	{	1155	{
924	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1156	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
925		1157
926	if (p->w)	1158	if (expect_true (p->w))
927	{	1159	{
		1160	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1161
928	p->w->pending = 0;	1162	p->w->pending = 0;
929	p->w->cb (EV_A_ p->w, p->events);	1163	EV_CB_INVOKE (p->w, p->events);
930	}	1164	}
931	}	1165	}
932	}	1166	}
933		1167
934	static void	1168	void inline_size
935	timers_reify (EV_P)	1169	timers_reify (EV_P)
936	{	1170	{
937	while (timercnt && ((WT)timers [0])->at <= mn_now)	1171	while (timercnt && ((WT)timers [0])->at <= mn_now)
938	{	1172	{
939	struct ev_timer *w = timers [0];	1173	ev_timer *w = timers [0];
940		1174
941	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1175	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
942		1176
943	/* first reschedule or stop timer */	1177	/* first reschedule or stop timer */
944	if (w->repeat)	1178	if (w->repeat)
945	{	1179	{
946	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
947	((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
948	downheap ((WT *)timers, timercnt, 0);	1186	downheap ((WT *)timers, timercnt, 0);
949	}	1187	}
950	else	1188	else
951	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1189	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
952		1190
953	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1191	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
954	}	1192	}
955	}	1193	}
956		1194
957	static void	1195	#if EV_PERIODIC_ENABLE
		1196	void inline_size
958	periodics_reify (EV_P)	1197	periodics_reify (EV_P)
959	{	1198	{
960	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1199	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
961	{	1200	{
962	struct ev_periodic *w = periodics [0];	1201	ev_periodic *w = periodics [0];
963		1202
964	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1203	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
965		1204
966	/* first reschedule or stop timer */	1205	/* first reschedule or stop timer */
967	if (w->reschedule_cb)	1206	if (w->reschedule_cb)
968	{	1207	{
969	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);
970
971	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));
972	downheap ((WT *)periodics, periodiccnt, 0);	1210	downheap ((WT *)periodics, periodiccnt, 0);
973	}	1211	}
974	else if (w->interval)	1212	else if (w->interval)
975	{	1213	{
976	((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;
977	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));
978	downheap ((WT *)periodics, periodiccnt, 0);	1216	downheap ((WT *)periodics, periodiccnt, 0);
979	}	1217	}
980	else	1218	else
981	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1219	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
982		1220
983	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1221	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
984	}	1222	}
985	}	1223	}
986		1224
987	static void	1225	static void noinline
988	periodics_reschedule (EV_P)	1226	periodics_reschedule (EV_P)
989	{	1227	{
990	int i;	1228	int i;
991		1229
992	/* adjust periodics after time jump */	1230	/* adjust periodics after time jump */
993	for (i = 0; i < periodiccnt; ++i)	1231	for (i = 0; i < periodiccnt; ++i)
994	{	1232	{
995	struct ev_periodic *w = periodics [i];	1233	ev_periodic *w = periodics [i];
996		1234
997	if (w->reschedule_cb)	1235	if (w->reschedule_cb)
998	((WT)w)->at = w->reschedule_cb (w, rt_now);	1236	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
999	else if (w->interval)	1237	else if (w->interval)
1000	((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;
1001	}	1239	}
1002		1240
1003	/* now rebuild the heap */	1241	/* now rebuild the heap */
1004	for (i = periodiccnt >> 1; i--; )	1242	for (i = periodiccnt >> 1; i--; )
1005	downheap ((WT *)periodics, periodiccnt, i);	1243	downheap ((WT *)periodics, periodiccnt, i);
1006	}	1244	}
		1245	#endif
1007		1246
1008	inline int	1247	int inline_size
1009	time_update_monotonic (EV_P)	1248	time_update_monotonic (EV_P)
1010	{	1249	{
1011	mn_now = get_clock ();	1250	mn_now = get_clock ();
1012		1251
1013	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1252	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1014	{	1253	{
1015	rt_now = rtmn_diff + mn_now;	1254	ev_rt_now = rtmn_diff + mn_now;
1016	return 0;	1255	return 0;
1017	}	1256	}
1018	else	1257	else
1019	{	1258	{
1020	now_floor = mn_now;	1259	now_floor = mn_now;
1021	rt_now = ev_time ();	1260	ev_rt_now = ev_time ();
1022	return 1;	1261	return 1;
1023	}	1262	}
1024	}	1263	}
1025		1264
1026	static void	1265	void inline_size
1027	time_update (EV_P)	1266	time_update (EV_P)
1028	{	1267	{
1029	int i;	1268	int i;
1030		1269
1031	#if EV_USE_MONOTONIC	1270	#if EV_USE_MONOTONIC
…		…
1033	{	1272	{
1034	if (time_update_monotonic (EV_A))	1273	if (time_update_monotonic (EV_A))
1035	{	1274	{
1036	ev_tstamp odiff = rtmn_diff;	1275	ev_tstamp odiff = rtmn_diff;
1037		1276
1038	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; )
1039	{	1286	{
1040	rtmn_diff = rt_now - mn_now;	1287	rtmn_diff = ev_rt_now - mn_now;
1041		1288
1042	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1289	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1043	return; /* all is well */	1290	return; /* all is well */
1044		1291
1045	rt_now = ev_time ();	1292	ev_rt_now = ev_time ();
1046	mn_now = get_clock ();	1293	mn_now = get_clock ();
1047	now_floor = mn_now;	1294	now_floor = mn_now;
1048	}	1295	}
1049		1296
		1297	# if EV_PERIODIC_ENABLE
1050	periodics_reschedule (EV_A);	1298	periodics_reschedule (EV_A);
		1299	# endif
1051	/* no timer adjustment, as the monotonic clock doesn't jump */	1300	/* no timer adjustment, as the monotonic clock doesn't jump */
1052	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1301	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1053	}	1302	}
1054	}	1303	}
1055	else	1304	else
1056	#endif	1305	#endif
1057	{	1306	{
1058	rt_now = ev_time ();	1307	ev_rt_now = ev_time ();
1059		1308
1060	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))
1061	{	1310	{
		1311	#if EV_PERIODIC_ENABLE
1062	periodics_reschedule (EV_A);	1312	periodics_reschedule (EV_A);
		1313	#endif
1063		1314
1064	/* 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 */
1065	for (i = 0; i < timercnt; ++i)	1316	for (i = 0; i < timercnt; ++i)
1066	((WT)timers [i])->at += rt_now - mn_now;	1317	((WT)timers [i])->at += ev_rt_now - mn_now;
1067	}	1318	}
1068		1319
1069	mn_now = rt_now;	1320	mn_now = ev_rt_now;
1070	}	1321	}
1071	}	1322	}
1072		1323
1073	void	1324	void
1074	ev_ref (EV_P)	1325	ev_ref (EV_P)
…		…
1085	static int loop_done;	1336	static int loop_done;
1086		1337
1087	void	1338	void
1088	ev_loop (EV_P_ int flags)	1339	ev_loop (EV_P_ int flags)
1089	{	1340	{
1090	double block;
1091	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1341	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1342	? EVUNLOOP_ONE
		1343	: EVUNLOOP_CANCEL;
1092		1344
1093	do	1345	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1346
		1347	while (expect_false (!activecnt))
1094	{	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
1095	/* queue check watchers (and execute them) */	1368	/* queue check watchers (and execute them) */
1096	if (expect_false (preparecnt))	1369	if (expect_false (preparecnt))
1097	{	1370	{
1098	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1371	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1099	call_pending (EV_A);	1372	call_pending (EV_A);
1100	}	1373	}
1101		1374
		1375	if (expect_false (!activecnt))
		1376	break;
		1377
1102	/* we might have forked, so reify kernel state if necessary */	1378	/* we might have forked, so reify kernel state if necessary */
1103	if (expect_false (postfork))	1379	if (expect_false (postfork))
1104	loop_fork (EV_A);	1380	loop_fork (EV_A);
1105		1381
1106	/* update fd-related kernel structures */	1382	/* update fd-related kernel structures */
1107	fd_reify (EV_A);	1383	fd_reify (EV_A);
1108		1384
1109	/* calculate blocking time */	1385	/* calculate blocking time */
		1386	{
		1387	ev_tstamp block;
1110		1388
1111	/* we only need this for !monotonic clock or timers, but as we basically	1389	if (expect_false (flags & EVLOOP_NONBLOCK || idlecnt || !activecnt))
1112	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 */
1113	#if EV_USE_MONOTONIC	1394	#if EV_USE_MONOTONIC
1114	if (expect_true (have_monotonic))	1395	if (expect_true (have_monotonic))
1115	time_update_monotonic (EV_A);	1396	time_update_monotonic (EV_A);
1116	else	1397	else
1117	#endif	1398	#endif
1118	{	1399	{
1119	rt_now = ev_time ();	1400	ev_rt_now = ev_time ();
1120	mn_now = rt_now;	1401	mn_now = ev_rt_now;
1121	}	1402	}
1122		1403
1123	if (flags & EVLOOP_NONBLOCK || idlecnt)
1124	block = 0.;
1125	else
1126	{
1127	block = MAX_BLOCKTIME;	1404	block = MAX_BLOCKTIME;
1128		1405
1129	if (timercnt)	1406	if (timercnt)
1130	{	1407	{
1131	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1408	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1132	if (block > to) block = to;	1409	if (block > to) block = to;
1133	}	1410	}
1134		1411
		1412	#if EV_PERIODIC_ENABLE
1135	if (periodiccnt)	1413	if (periodiccnt)
1136	{	1414	{
1137	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1415	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1138	if (block > to) block = to;	1416	if (block > to) block = to;
1139	}	1417	}
		1418	#endif
1140		1419
1141	if (block < 0.) block = 0.;	1420	if (expect_false (block < 0.)) block = 0.;
1142	}	1421	}
1143		1422
1144	method_poll (EV_A_ block);	1423	backend_poll (EV_A_ block);
		1424	}
1145		1425
1146	/* update rt_now, do magic */	1426	/* update ev_rt_now, do magic */
1147	time_update (EV_A);	1427	time_update (EV_A);
1148		1428
1149	/* queue pending timers and reschedule them */	1429	/* queue pending timers and reschedule them */
1150	timers_reify (EV_A); /* relative timers called last */	1430	timers_reify (EV_A); /* relative timers called last */
		1431	#if EV_PERIODIC_ENABLE
1151	periodics_reify (EV_A); /* absolute timers called first */	1432	periodics_reify (EV_A); /* absolute timers called first */
		1433	#endif
1152		1434
1153	/* queue idle watchers unless io or timers are pending */	1435	/* queue idle watchers unless other events are pending */
1154	if (idlecnt && !any_pending (EV_A))	1436	if (idlecnt && !any_pending (EV_A))
1155	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1437	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1156		1438
1157	/* queue check watchers, to be executed first */	1439	/* queue check watchers, to be executed first */
1158	if (checkcnt)	1440	if (expect_false (checkcnt))
1159	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1441	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1160		1442
1161	call_pending (EV_A);	1443	call_pending (EV_A);
1162	}
1163	while (activecnt && !loop_done);
1164		1444
1165	if (loop_done != 2)	1445	if (expect_false (loop_done))
1166	loop_done = 0;	1446	break;
		1447	}
		1448
		1449	if (loop_done == EVUNLOOP_ONE)
		1450	loop_done = EVUNLOOP_CANCEL;
1167	}	1451	}
1168		1452
1169	void	1453	void
1170	ev_unloop (EV_P_ int how)	1454	ev_unloop (EV_P_ int how)
1171	{	1455	{
1172	loop_done = how;	1456	loop_done = how;
1173	}	1457	}
1174		1458
1175	/*****************************************************************************/	1459	/*****************************************************************************/
1176		1460
1177	inline void	1461	void inline_size
1178	wlist_add (WL *head, WL elem)	1462	wlist_add (WL *head, WL elem)
1179	{	1463	{
1180	elem->next = *head;	1464	elem->next = *head;
1181	*head = elem;	1465	*head = elem;
1182	}	1466	}
1183		1467
1184	inline void	1468	void inline_size
1185	wlist_del (WL *head, WL elem)	1469	wlist_del (WL *head, WL elem)
1186	{	1470	{
1187	while (*head)	1471	while (*head)
1188	{	1472	{
1189	if (*head == elem)	1473	if (*head == elem)
…		…
1194		1478
1195	head = &(*head)->next;	1479	head = &(*head)->next;
1196	}	1480	}
1197	}	1481	}
1198		1482
1199	inline void	1483	void inline_speed
1200	ev_clear_pending (EV_P_ W w)	1484	ev_clear_pending (EV_P_ W w)
1201	{	1485	{
1202	if (w->pending)	1486	if (w->pending)
1203	{	1487	{
1204	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1488	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1205	w->pending = 0;	1489	w->pending = 0;
1206	}	1490	}
1207	}	1491	}
1208		1492
1209	inline void	1493	void inline_speed
1210	ev_start (EV_P_ W w, int active)	1494	ev_start (EV_P_ W w, int active)
1211	{	1495	{
1212	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1496	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1213	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1497	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1214		1498
1215	w->active = active;	1499	w->active = active;
1216	ev_ref (EV_A);	1500	ev_ref (EV_A);
1217	}	1501	}
1218		1502
1219	inline void	1503	void inline_size
1220	ev_stop (EV_P_ W w)	1504	ev_stop (EV_P_ W w)
1221	{	1505	{
1222	ev_unref (EV_A);	1506	ev_unref (EV_A);
1223	w->active = 0;	1507	w->active = 0;
1224	}	1508	}
1225		1509
1226	/*****************************************************************************/	1510	/*****************************************************************************/
1227		1511
1228	void	1512	void
1229	ev_io_start (EV_P_ struct ev_io *w)	1513	ev_io_start (EV_P_ ev_io *w)
1230	{	1514	{
1231	int fd = w->fd;	1515	int fd = w->fd;
1232		1516
1233	if (ev_is_active (w))	1517	if (expect_false (ev_is_active (w)))
1234	return;	1518	return;
1235		1519
1236	assert (("ev_io_start called with negative fd", fd >= 0));	1520	assert (("ev_io_start called with negative fd", fd >= 0));
1237		1521
1238	ev_start (EV_A_ (W)w, 1);	1522	ev_start (EV_A_ (W)w, 1);
…		…
1241		1525
1242	fd_change (EV_A_ fd);	1526	fd_change (EV_A_ fd);
1243	}	1527	}
1244		1528
1245	void	1529	void
1246	ev_io_stop (EV_P_ struct ev_io *w)	1530	ev_io_stop (EV_P_ ev_io *w)
1247	{	1531	{
1248	ev_clear_pending (EV_A_ (W)w);	1532	ev_clear_pending (EV_A_ (W)w);
1249	if (!ev_is_active (w))	1533	if (expect_false (!ev_is_active (w)))
1250	return;	1534	return;
		1535
		1536	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1251		1537
1252	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1538	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1253	ev_stop (EV_A_ (W)w);	1539	ev_stop (EV_A_ (W)w);
1254		1540
1255	fd_change (EV_A_ w->fd);	1541	fd_change (EV_A_ w->fd);
1256	}	1542	}
1257		1543
1258	void	1544	void
1259	ev_timer_start (EV_P_ struct ev_timer *w)	1545	ev_timer_start (EV_P_ ev_timer *w)
1260	{	1546	{
1261	if (ev_is_active (w))	1547	if (expect_false (ev_is_active (w)))
1262	return;	1548	return;
1263		1549
1264	((WT)w)->at += mn_now;	1550	((WT)w)->at += mn_now;
1265		1551
1266	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.));
1267		1553
1268	ev_start (EV_A_ (W)w, ++timercnt);	1554	ev_start (EV_A_ (W)w, ++timercnt);
1269	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1555	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1270	timers [timercnt - 1] = w;	1556	timers [timercnt - 1] = w;
1271	upheap ((WT *)timers, timercnt - 1);	1557	upheap ((WT *)timers, timercnt - 1);
1272		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
1273	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1569	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1274	}
1275		1570
1276	void	1571	{
1277	ev_timer_stop (EV_P_ struct ev_timer *w)	1572	int active = ((W)w)->active;
1278	{
1279	ev_clear_pending (EV_A_ (W)w);
1280	if (!ev_is_active (w))
1281	return;
1282		1573
1283	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1574	if (expect_true (--active < --timercnt))
1284
1285	if (((W)w)->active < timercnt--)
1286	{	1575	{
1287	timers [((W)w)->active - 1] = timers [timercnt];	1576	timers [active] = timers [timercnt];
1288	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1577	adjustheap ((WT *)timers, timercnt, active);
1289	}	1578	}
		1579	}
1290		1580
1291	((WT)w)->at = w->repeat;	1581	((WT)w)->at -= mn_now;
1292		1582
1293	ev_stop (EV_A_ (W)w);	1583	ev_stop (EV_A_ (W)w);
1294	}	1584	}
1295		1585
1296	void	1586	void
1297	ev_timer_again (EV_P_ struct ev_timer *w)	1587	ev_timer_again (EV_P_ ev_timer *w)
1298	{	1588	{
1299	if (ev_is_active (w))	1589	if (ev_is_active (w))
1300	{	1590	{
1301	if (w->repeat)	1591	if (w->repeat)
1302	{	1592	{
1303	((WT)w)->at = mn_now + w->repeat;	1593	((WT)w)->at = mn_now + w->repeat;
1304	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1594	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1305	}	1595	}
1306	else	1596	else
1307	ev_timer_stop (EV_A_ w);	1597	ev_timer_stop (EV_A_ w);
1308	}	1598	}
1309	else if (w->repeat)	1599	else if (w->repeat)
		1600	{
		1601	w->at = w->repeat;
1310	ev_timer_start (EV_A_ w);	1602	ev_timer_start (EV_A_ w);
		1603	}
1311	}	1604	}
1312		1605
		1606	#if EV_PERIODIC_ENABLE
1313	void	1607	void
1314	ev_periodic_start (EV_P_ struct ev_periodic *w)	1608	ev_periodic_start (EV_P_ ev_periodic *w)
1315	{	1609	{
1316	if (ev_is_active (w))	1610	if (expect_false (ev_is_active (w)))
1317	return;	1611	return;
1318		1612
1319	if (w->reschedule_cb)	1613	if (w->reschedule_cb)
1320	((WT)w)->at = w->reschedule_cb (w, rt_now);	1614	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1321	else if (w->interval)	1615	else if (w->interval)
1322	{	1616	{
1323	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.));
1324	/* 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 */
1325	((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;
1326	}	1620	}
1327		1621
1328	ev_start (EV_A_ (W)w, ++periodiccnt);	1622	ev_start (EV_A_ (W)w, ++periodiccnt);
1329	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1623	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1330	periodics [periodiccnt - 1] = w;	1624	periodics [periodiccnt - 1] = w;
1331	upheap ((WT *)periodics, periodiccnt - 1);	1625	upheap ((WT *)periodics, periodiccnt - 1);
1332		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
1333	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1637	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1334	}
1335		1638
1336	void	1639	{
1337	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1640	int active = ((W)w)->active;
1338	{
1339	ev_clear_pending (EV_A_ (W)w);
1340	if (!ev_is_active (w))
1341	return;
1342		1641
1343	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1642	if (expect_true (--active < --periodiccnt))
1344
1345	if (((W)w)->active < periodiccnt--)
1346	{	1643	{
1347	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1644	periodics [active] = periodics [periodiccnt];
1348	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1645	adjustheap ((WT *)periodics, periodiccnt, active);
1349	}	1646	}
		1647	}
1350		1648
1351	ev_stop (EV_A_ (W)w);	1649	ev_stop (EV_A_ (W)w);
1352	}	1650	}
1353		1651
1354	void	1652	void
1355	ev_periodic_again (EV_P_ struct ev_periodic *w)	1653	ev_periodic_again (EV_P_ ev_periodic *w)
1356	{	1654	{
		1655	/* TODO: use adjustheap and recalculation */
1357	ev_periodic_stop (EV_A_ w);	1656	ev_periodic_stop (EV_A_ w);
1358	ev_periodic_start (EV_A_ w);	1657	ev_periodic_start (EV_A_ w);
1359	}	1658	}
1360		1659	#endif
1361	void
1362	ev_idle_start (EV_P_ struct ev_idle *w)
1363	{
1364	if (ev_is_active (w))
1365	return;
1366
1367	ev_start (EV_A_ (W)w, ++idlecnt);
1368	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1369	idles [idlecnt - 1] = w;
1370	}
1371
1372	void
1373	ev_idle_stop (EV_P_ struct ev_idle *w)
1374	{
1375	ev_clear_pending (EV_A_ (W)w);
1376	if (ev_is_active (w))
1377	return;
1378
1379	idles [((W)w)->active - 1] = idles [--idlecnt];
1380	ev_stop (EV_A_ (W)w);
1381	}
1382
1383	void
1384	ev_prepare_start (EV_P_ struct ev_prepare *w)
1385	{
1386	if (ev_is_active (w))
1387	return;
1388
1389	ev_start (EV_A_ (W)w, ++preparecnt);
1390	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1391	prepares [preparecnt - 1] = w;
1392	}
1393
1394	void
1395	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1396	{
1397	ev_clear_pending (EV_A_ (W)w);
1398	if (ev_is_active (w))
1399	return;
1400
1401	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1402	ev_stop (EV_A_ (W)w);
1403	}
1404
1405	void
1406	ev_check_start (EV_P_ struct ev_check *w)
1407	{
1408	if (ev_is_active (w))
1409	return;
1410
1411	ev_start (EV_A_ (W)w, ++checkcnt);
1412	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1413	checks [checkcnt - 1] = w;
1414	}
1415
1416	void
1417	ev_check_stop (EV_P_ struct ev_check *w)
1418	{
1419	ev_clear_pending (EV_A_ (W)w);
1420	if (ev_is_active (w))
1421	return;
1422
1423	checks [((W)w)->active - 1] = checks [--checkcnt];
1424	ev_stop (EV_A_ (W)w);
1425	}
1426		1660
1427	#ifndef SA_RESTART	1661	#ifndef SA_RESTART
1428	# define SA_RESTART 0	1662	# define SA_RESTART 0
1429	#endif	1663	#endif
1430		1664
1431	void	1665	void
1432	ev_signal_start (EV_P_ struct ev_signal *w)	1666	ev_signal_start (EV_P_ ev_signal *w)
1433	{	1667	{
1434	#if EV_MULTIPLICITY	1668	#if EV_MULTIPLICITY
1435	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));
1436	#endif	1670	#endif
1437	if (ev_is_active (w))	1671	if (expect_false (ev_is_active (w)))
1438	return;	1672	return;
1439		1673
1440	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));
1441		1675
1442	ev_start (EV_A_ (W)w, 1);	1676	ev_start (EV_A_ (W)w, 1);
1443	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1677	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1444	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1678	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1445		1679
1446	if (!((WL)w)->next)	1680	if (!((WL)w)->next)
1447	{	1681	{
1448	#if WIN32	1682	#if _WIN32
1449	signal (w->signum, sighandler);	1683	signal (w->signum, sighandler);
1450	#else	1684	#else
1451	struct sigaction sa;	1685	struct sigaction sa;
1452	sa.sa_handler = sighandler;	1686	sa.sa_handler = sighandler;
1453	sigfillset (&sa.sa_mask);	1687	sigfillset (&sa.sa_mask);
…		…
1456	#endif	1690	#endif
1457	}	1691	}
1458	}	1692	}
1459		1693
1460	void	1694	void
1461	ev_signal_stop (EV_P_ struct ev_signal *w)	1695	ev_signal_stop (EV_P_ ev_signal *w)
1462	{	1696	{
1463	ev_clear_pending (EV_A_ (W)w);	1697	ev_clear_pending (EV_A_ (W)w);
1464	if (!ev_is_active (w))	1698	if (expect_false (!ev_is_active (w)))
1465	return;	1699	return;
1466		1700
1467	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1701	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1468	ev_stop (EV_A_ (W)w);	1702	ev_stop (EV_A_ (W)w);
1469		1703
1470	if (!signals [w->signum - 1].head)	1704	if (!signals [w->signum - 1].head)
1471	signal (w->signum, SIG_DFL);	1705	signal (w->signum, SIG_DFL);
1472	}	1706	}
1473		1707
1474	void	1708	void
1475	ev_child_start (EV_P_ struct ev_child *w)	1709	ev_child_start (EV_P_ ev_child *w)
1476	{	1710	{
1477	#if EV_MULTIPLICITY	1711	#if EV_MULTIPLICITY
1478	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));
1479	#endif	1713	#endif
1480	if (ev_is_active (w))	1714	if (expect_false (ev_is_active (w)))
1481	return;	1715	return;
1482		1716
1483	ev_start (EV_A_ (W)w, 1);	1717	ev_start (EV_A_ (W)w, 1);
1484	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1718	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1485	}	1719	}
1486		1720
1487	void	1721	void
1488	ev_child_stop (EV_P_ struct ev_child *w)	1722	ev_child_stop (EV_P_ ev_child *w)
1489	{	1723	{
1490	ev_clear_pending (EV_A_ (W)w);	1724	ev_clear_pending (EV_A_ (W)w);
1491	if (ev_is_active (w))	1725	if (expect_false (!ev_is_active (w)))
1492	return;	1726	return;
1493		1727
1494	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1728	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1495	ev_stop (EV_A_ (W)w);	1729	ev_stop (EV_A_ (W)w);
1496	}	1730	}
1497		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
1498	/*****************************************************************************/	2142	/*****************************************************************************/
1499		2143
1500	struct ev_once	2144	struct ev_once
1501	{	2145	{
1502	struct ev_io io;	2146	ev_io io;
1503	struct ev_timer to;	2147	ev_timer to;
1504	void (*cb)(int revents, void *arg);	2148	void (*cb)(int revents, void *arg);
1505	void *arg;	2149	void *arg;
1506	};	2150	};
1507		2151
1508	static void	2152	static void
…		…
1517		2161
1518	cb (revents, arg);	2162	cb (revents, arg);
1519	}	2163	}
1520		2164
1521	static void	2165	static void
1522	once_cb_io (EV_P_ struct ev_io *w, int revents)	2166	once_cb_io (EV_P_ ev_io *w, int revents)
1523	{	2167	{
1524	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);
1525	}	2169	}
1526		2170
1527	static void	2171	static void
1528	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2172	once_cb_to (EV_P_ ev_timer *w, int revents)
1529	{	2173	{
1530	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);
1531	}	2175	}
1532		2176
1533	void	2177	void
1534	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)
1535	{	2179	{
1536	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));
1537		2181
1538	if (!once)	2182	if (expect_false (!once))
		2183	{
1539	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2184	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1540	else	2185	return;
1541	{	2186	}
		2187
1542	once->cb = cb;	2188	once->cb = cb;
1543	once->arg = arg;	2189	once->arg = arg;
1544		2190
1545	ev_watcher_init (&once->io, once_cb_io);	2191	ev_init (&once->io, once_cb_io);
1546	if (fd >= 0)	2192	if (fd >= 0)
1547	{	2193	{
1548	ev_io_set (&once->io, fd, events);	2194	ev_io_set (&once->io, fd, events);
1549	ev_io_start (EV_A_ &once->io);	2195	ev_io_start (EV_A_ &once->io);
1550	}	2196	}
1551		2197
1552	ev_watcher_init (&once->to, once_cb_to);	2198	ev_init (&once->to, once_cb_to);
1553	if (timeout >= 0.)	2199	if (timeout >= 0.)
1554	{	2200	{
1555	ev_timer_set (&once->to, timeout, 0.);	2201	ev_timer_set (&once->to, timeout, 0.);
1556	ev_timer_start (EV_A_ &once->to);	2202	ev_timer_start (EV_A_ &once->to);
1557	}
1558	}	2203	}
1559	}	2204	}
1560		2205
		2206	#ifdef __cplusplus
		2207	}
		2208	#endif
		2209

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