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Comparing libev/ev.c (file contents):
Revision 1.85 by root, Sat Nov 10 03:13:50 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	{
…		…
279	{	396	{
280	return ev_rt_now;	397	return ev_rt_now;
281	}	398	}
282	#endif	399	#endif
283		400
284	#define array_roundsize(type,n) ((n) | 4 & ~3)	401	#define array_roundsize(type,n) (((n) | 4) & ~3)
285		402
286	#define array_needsize(type,base,cur,cnt,init) \	403	#define array_needsize(type,base,cur,cnt,init) \
287	if (expect_false ((cnt) > cur)) \	404	if (expect_false ((cnt) > cur)) \
288	{ \	405	{ \
289	int newcnt = cur; \	406	int newcnt = cur; \
…		…
304	stem ## max = array_roundsize (stem ## cnt >> 1); \	421	stem ## max = array_roundsize (stem ## cnt >> 1); \
305	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	422	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
306	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	423	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
307	}	424	}
308		425
309	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
310	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
311	#define array_free_microshit(stem) \
312	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
313
314	#define array_free(stem, idx) \	426	#define array_free(stem, idx) \
315	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;
316		428
317	/*****************************************************************************/	429	/*****************************************************************************/
318		430
319	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
320	anfds_init (ANFD *base, int count)	460	anfds_init (ANFD *base, int count)
321	{	461	{
322	while (count--)	462	while (count--)
323	{	463	{
324	base->head = 0;	464	base->head = 0;
…		…
327		467
328	++base;	468	++base;
329	}	469	}
330	}	470	}
331		471
332	void	472	void inline_speed
333	ev_feed_event (EV_P_ void *w, int revents)
334	{
335	W w_ = (W)w;
336
337	if (w_->pending)
338	{
339	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
340	return;
341	}
342
343	w_->pending = ++pendingcnt [ABSPRI (w_)];
344	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
345	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
346	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
347	}
348
349	static void
350	queue_events (EV_P_ W *events, int eventcnt, int type)
351	{
352	int i;
353
354	for (i = 0; i < eventcnt; ++i)
355	ev_feed_event (EV_A_ events [i], type);
356	}
357
358	inline void
359	fd_event (EV_P_ int fd, int revents)	473	fd_event (EV_P_ int fd, int revents)
360	{	474	{
361	ANFD *anfd = anfds + fd;	475	ANFD *anfd = anfds + fd;
362	struct ev_io *w;	476	ev_io *w;
363		477
364	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)
365	{	479	{
366	int ev = w->events & revents;	480	int ev = w->events & revents;
367		481
368	if (ev)	482	if (ev)
369	ev_feed_event (EV_A_ (W)w, ev);	483	ev_feed_event (EV_A_ (W)w, ev);
…		…
374	ev_feed_fd_event (EV_P_ int fd, int revents)	488	ev_feed_fd_event (EV_P_ int fd, int revents)
375	{	489	{
376	fd_event (EV_A_ fd, revents);	490	fd_event (EV_A_ fd, revents);
377	}	491	}
378		492
379	/*****************************************************************************/	493	void inline_size
380
381	static void
382	fd_reify (EV_P)	494	fd_reify (EV_P)
383	{	495	{
384	int i;	496	int i;
385		497
386	for (i = 0; i < fdchangecnt; ++i)	498	for (i = 0; i < fdchangecnt; ++i)
387	{	499	{
388	int fd = fdchanges [i];	500	int fd = fdchanges [i];
389	ANFD *anfd = anfds + fd;	501	ANFD *anfd = anfds + fd;
390	struct ev_io *w;	502	ev_io *w;
391		503
392	int events = 0;	504	int events = 0;
393		505
394	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)
395	events |= w->events;	507	events |= w->events;
396		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
397	anfd->reify = 0;	518	anfd->reify = 0;
398		519
399	method_modify (EV_A_ fd, anfd->events, events);	520	backend_modify (EV_A_ fd, anfd->events, events);
400	anfd->events = events;	521	anfd->events = events;
401	}	522	}
402		523
403	fdchangecnt = 0;	524	fdchangecnt = 0;
404	}	525	}
405		526
406	static void	527	void inline_size
407	fd_change (EV_P_ int fd)	528	fd_change (EV_P_ int fd)
408	{	529	{
409	if (anfds [fd].reify)	530	if (expect_false (anfds [fd].reify))
410	return;	531	return;
411		532
412	anfds [fd].reify = 1;	533	anfds [fd].reify = 1;
413		534
414	++fdchangecnt;	535	++fdchangecnt;
415	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	536	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
416	fdchanges [fdchangecnt - 1] = fd;	537	fdchanges [fdchangecnt - 1] = fd;
417	}	538	}
418		539
419	static void	540	void inline_speed
420	fd_kill (EV_P_ int fd)	541	fd_kill (EV_P_ int fd)
421	{	542	{
422	struct ev_io *w;	543	ev_io *w;
423		544
424	while ((w = (struct ev_io *)anfds [fd].head))	545	while ((w = (ev_io *)anfds [fd].head))
425	{	546	{
426	ev_io_stop (EV_A_ w);	547	ev_io_stop (EV_A_ w);
427	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);
428	}	549	}
429	}	550	}
430		551
431	static int	552	int inline_size
432	fd_valid (int fd)	553	fd_valid (int fd)
433	{	554	{
434	#ifdef WIN32	555	#ifdef _WIN32
435	return !!win32_get_osfhandle (fd);	556	return _get_osfhandle (fd) != -1;
436	#else	557	#else
437	return fcntl (fd, F_GETFD) != -1;	558	return fcntl (fd, F_GETFD) != -1;
438	#endif	559	#endif
439	}	560	}
440		561
441	/* called on EBADF to verify fds */	562	/* called on EBADF to verify fds */
442	static void	563	static void noinline
443	fd_ebadf (EV_P)	564	fd_ebadf (EV_P)
444	{	565	{
445	int fd;	566	int fd;
446		567
447	for (fd = 0; fd < anfdmax; ++fd)	568	for (fd = 0; fd < anfdmax; ++fd)
…		…
449	if (!fd_valid (fd) == -1 && errno == EBADF)	570	if (!fd_valid (fd) == -1 && errno == EBADF)
450	fd_kill (EV_A_ fd);	571	fd_kill (EV_A_ fd);
451	}	572	}
452		573
453	/* 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 */
454	static void	575	static void noinline
455	fd_enomem (EV_P)	576	fd_enomem (EV_P)
456	{	577	{
457	int fd;	578	int fd;
458		579
459	for (fd = anfdmax; fd--; )	580	for (fd = anfdmax; fd--; )
…		…
462	fd_kill (EV_A_ fd);	583	fd_kill (EV_A_ fd);
463	return;	584	return;
464	}	585	}
465	}	586	}
466		587
467	/* 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 */
468	static void	589	static void noinline
469	fd_rearm_all (EV_P)	590	fd_rearm_all (EV_P)
470	{	591	{
471	int fd;	592	int fd;
472		593
473	/* this should be highly optimised to not do anything but set a flag */
474	for (fd = 0; fd < anfdmax; ++fd)	594	for (fd = 0; fd < anfdmax; ++fd)
475	if (anfds [fd].events)	595	if (anfds [fd].events)
476	{	596	{
477	anfds [fd].events = 0;	597	anfds [fd].events = 0;
478	fd_change (EV_A_ fd);	598	fd_change (EV_A_ fd);
479	}	599	}
480	}	600	}
481		601
482	/*****************************************************************************/	602	/*****************************************************************************/
483		603
484	static void	604	void inline_speed
485	upheap (WT *heap, int k)	605	upheap (WT *heap, int k)
486	{	606	{
487	WT w = heap [k];	607	WT w = heap [k];
488		608
489	while (k && heap [k >> 1]->at > w->at)	609	while (k && heap [k >> 1]->at > w->at)
…		…
496	heap [k] = w;	616	heap [k] = w;
497	((W)heap [k])->active = k + 1;	617	((W)heap [k])->active = k + 1;
498		618
499	}	619	}
500		620
501	static void	621	void inline_speed
502	downheap (WT *heap, int N, int k)	622	downheap (WT *heap, int N, int k)
503	{	623	{
504	WT w = heap [k];	624	WT w = heap [k];
505		625
506	while (k < (N >> 1))	626	while (k < (N >> 1))
…		…
520		640
521	heap [k] = w;	641	heap [k] = w;
522	((W)heap [k])->active = k + 1;	642	((W)heap [k])->active = k + 1;
523	}	643	}
524		644
525	inline void	645	void inline_size
526	adjustheap (WT *heap, int N, int k, ev_tstamp at)	646	adjustheap (WT *heap, int N, int k)
527	{	647	{
528	ev_tstamp old_at = heap [k]->at;	648	upheap (heap, k);
529	heap [k]->at = at;
530
531	if (old_at < at)
532	downheap (heap, N, k);	649	downheap (heap, N, k);
533	else
534	upheap (heap, k);
535	}	650	}
536		651
537	/*****************************************************************************/	652	/*****************************************************************************/
538		653
539	typedef struct	654	typedef struct
…		…
545	static ANSIG *signals;	660	static ANSIG *signals;
546	static int signalmax;	661	static int signalmax;
547		662
548	static int sigpipe [2];	663	static int sigpipe [2];
549	static sig_atomic_t volatile gotsig;	664	static sig_atomic_t volatile gotsig;
550	static struct ev_io sigev;	665	static ev_io sigev;
551		666
552	static void	667	void inline_size
553	signals_init (ANSIG *base, int count)	668	signals_init (ANSIG *base, int count)
554	{	669	{
555	while (count--)	670	while (count--)
556	{	671	{
557	base->head = 0;	672	base->head = 0;
…		…
562	}	677	}
563		678
564	static void	679	static void
565	sighandler (int signum)	680	sighandler (int signum)
566	{	681	{
567	#if WIN32	682	#if _WIN32
568	signal (signum, sighandler);	683	signal (signum, sighandler);
569	#endif	684	#endif
570		685
571	signals [signum - 1].gotsig = 1;	686	signals [signum - 1].gotsig = 1;
572		687
573	if (!gotsig)	688	if (!gotsig)
574	{	689	{
575	int old_errno = errno;	690	int old_errno = errno;
576	gotsig = 1;	691	gotsig = 1;
577	#ifdef WIN32
578	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
579	#else
580	write (sigpipe [1], &signum, 1);	692	write (sigpipe [1], &signum, 1);
581	#endif
582	errno = old_errno;	693	errno = old_errno;
583	}	694	}
584	}	695	}
585		696
586	void	697	void noinline
587	ev_feed_signal_event (EV_P_ int signum)	698	ev_feed_signal_event (EV_P_ int signum)
588	{	699	{
589	WL w;	700	WL w;
590		701
591	#if EV_MULTIPLICITY	702	#if EV_MULTIPLICITY
592	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));
593	#endif	704	#endif
594		705
595	--signum;	706	--signum;
596		707
597	if (signum < 0 || signum >= signalmax)	708	if (signum < 0 || signum >= signalmax)
…		…
602	for (w = signals [signum].head; w; w = w->next)	713	for (w = signals [signum].head; w; w = w->next)
603	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	714	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
604	}	715	}
605		716
606	static void	717	static void
607	sigcb (EV_P_ struct ev_io *iow, int revents)	718	sigcb (EV_P_ ev_io *iow, int revents)
608	{	719	{
609	int signum;	720	int signum;
610		721
611	#ifdef WIN32
612	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
613	#else
614	read (sigpipe [0], &revents, 1);	722	read (sigpipe [0], &revents, 1);
615	#endif
616	gotsig = 0;	723	gotsig = 0;
617		724
618	for (signum = signalmax; signum--; )	725	for (signum = signalmax; signum--; )
619	if (signals [signum].gotsig)	726	if (signals [signum].gotsig)
620	ev_feed_signal_event (EV_A_ signum + 1);	727	ev_feed_signal_event (EV_A_ signum + 1);
621	}	728	}
622		729
623	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
624	siginit (EV_P)	743	siginit (EV_P)
625	{	744	{
626	#ifndef WIN32	745	fd_intern (sigpipe [0]);
627	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	746	fd_intern (sigpipe [1]);
628	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
629
630	/* rather than sort out wether we really need nb, set it */
631	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
632	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
633	#endif
634		747
635	ev_io_set (&sigev, sigpipe [0], EV_READ);	748	ev_io_set (&sigev, sigpipe [0], EV_READ);
636	ev_io_start (EV_A_ &sigev);	749	ev_io_start (EV_A_ &sigev);
637	ev_unref (EV_A); /* child watcher should not keep loop alive */	750	ev_unref (EV_A); /* child watcher should not keep loop alive */
638	}	751	}
639		752
640	/*****************************************************************************/	753	/*****************************************************************************/
641		754
642	static struct ev_child *childs [PID_HASHSIZE];	755	static ev_child *childs [EV_PID_HASHSIZE];
643		756
644	#ifndef WIN32	757	#ifndef _WIN32
645		758
646	static struct ev_signal childev;	759	static ev_signal childev;
647		760
648	#ifndef WCONTINUED	761	void inline_speed
649	# define WCONTINUED 0
650	#endif
651
652	static void
653	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)
654	{	763	{
655	struct ev_child *w;	764	ev_child *w;
656		765
657	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)
658	if (w->pid == pid || !w->pid)	767	if (w->pid == pid || !w->pid)
659	{	768	{
660	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	769	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
661	w->rpid = pid;	770	w->rpid = pid;
662	w->rstatus = status;	771	w->rstatus = status;
663	ev_feed_event (EV_A_ (W)w, EV_CHILD);	772	ev_feed_event (EV_A_ (W)w, EV_CHILD);
664	}	773	}
665	}	774	}
666		775
		776	#ifndef WCONTINUED
		777	# define WCONTINUED 0
		778	#endif
		779
667	static void	780	static void
668	childcb (EV_P_ struct ev_signal *sw, int revents)	781	childcb (EV_P_ ev_signal *sw, int revents)
669	{	782	{
670	int pid, status;	783	int pid, status;
671		784
		785	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
672	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	786	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
673	{	787	if (!WCONTINUED
		788	|| errno != EINVAL
		789	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		790	return;
		791
674	/* 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 */
675	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	794	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
676		795
677	child_reap (EV_A_ sw, pid, pid, status);	796	child_reap (EV_A_ sw, pid, pid, status);
		797	if (EV_PID_HASHSIZE > 1)
678	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 */
679	}
680	}	799	}
681		800
682	#endif	801	#endif
683		802
684	/*****************************************************************************/	803	/*****************************************************************************/
685		804
		805	#if EV_USE_PORT
		806	# include "ev_port.c"
		807	#endif
686	#if EV_USE_KQUEUE	808	#if EV_USE_KQUEUE
687	# include "ev_kqueue.c"	809	# include "ev_kqueue.c"
688	#endif	810	#endif
689	#if EV_USE_EPOLL	811	#if EV_USE_EPOLL
690	# include "ev_epoll.c"	812	# include "ev_epoll.c"
…		…
707	{	829	{
708	return EV_VERSION_MINOR;	830	return EV_VERSION_MINOR;
709	}	831	}
710		832
711	/* 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 */
712	static int	834	int inline_size
713	enable_secure (void)	835	enable_secure (void)
714	{	836	{
715	#ifdef WIN32	837	#ifdef _WIN32
716	return 0;	838	return 0;
717	#else	839	#else
718	return getuid () != geteuid ()	840	return getuid () != geteuid ()
719	|| getgid () != getegid ();	841	|| getgid () != getegid ();
720	#endif	842	#endif
721	}	843	}
722		844
723	int	845	unsigned int
724	ev_method (EV_P)	846	ev_supported_backends (void)
725	{	847	{
726	return method;	848	unsigned int flags = 0;
727	}
728		849
729	static void	850	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
730	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)
731	{	861	{
732	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)
733	{	895	{
734	#if EV_USE_MONOTONIC	896	#if EV_USE_MONOTONIC
735	{	897	{
736	struct timespec ts;	898	struct timespec ts;
737	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	899	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
742	ev_rt_now = ev_time ();	904	ev_rt_now = ev_time ();
743	mn_now = get_clock ();	905	mn_now = get_clock ();
744	now_floor = mn_now;	906	now_floor = mn_now;
745	rtmn_diff = ev_rt_now - mn_now;	907	rtmn_diff = ev_rt_now - mn_now;
746		908
747	if (methods == EVMETHOD_AUTO)	909	/* pid check not overridable via env */
748	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"))
749	methods = atoi (getenv ("LIBEV_METHODS"));	918	flags = atoi (getenv ("LIBEV_FLAGS"));
750	else
751	methods = EVMETHOD_ANY;
752		919
753	method = 0;	920	if (!(flags & 0x0000ffffUL))
		921	flags |= ev_recommended_backends ();
		922
		923	backend = 0;
		924	backend_fd = -1;
754	#if EV_USE_WIN32	925	#if EV_USE_INOTIFY
755	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);
756	#endif	931	#endif
757	#if EV_USE_KQUEUE	932	#if EV_USE_KQUEUE
758	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	933	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
759	#endif	934	#endif
760	#if EV_USE_EPOLL	935	#if EV_USE_EPOLL
761	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	936	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
762	#endif	937	#endif
763	#if EV_USE_POLL	938	#if EV_USE_POLL
764	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	939	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
765	#endif	940	#endif
766	#if EV_USE_SELECT	941	#if EV_USE_SELECT
767	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	942	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
768	#endif	943	#endif
769		944
770	ev_init (&sigev, sigcb);	945	ev_init (&sigev, sigcb);
771	ev_set_priority (&sigev, EV_MAXPRI);	946	ev_set_priority (&sigev, EV_MAXPRI);
772	}	947	}
773	}	948	}
774		949
775	void	950	static void noinline
776	loop_destroy (EV_P)	951	loop_destroy (EV_P)
777	{	952	{
778	int i;	953	int i;
779		954
780	#if EV_USE_WIN32	955	#if EV_USE_INOTIFY
781	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);
782	#endif	965	#endif
783	#if EV_USE_KQUEUE	966	#if EV_USE_KQUEUE
784	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	967	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
785	#endif	968	#endif
786	#if EV_USE_EPOLL	969	#if EV_USE_EPOLL
787	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	970	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
788	#endif	971	#endif
789	#if EV_USE_POLL	972	#if EV_USE_POLL
790	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	973	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
791	#endif	974	#endif
792	#if EV_USE_SELECT	975	#if EV_USE_SELECT
793	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	976	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
794	#endif	977	#endif
795		978
796	for (i = NUMPRI; i--; )	979	for (i = NUMPRI; i--; )
797	array_free (pending, [i]);	980	array_free (pending, [i]);
798		981
799	/* have to use the microsoft-never-gets-it-right macro */	982	/* have to use the microsoft-never-gets-it-right macro */
800	array_free_microshit (fdchange);	983	array_free (fdchange, EMPTY0);
801	array_free_microshit (timer);	984	array_free (timer, EMPTY0);
802	array_free_microshit (periodic);	985	#if EV_PERIODIC_ENABLE
803	array_free_microshit (idle);	986	array_free (periodic, EMPTY0);
804	array_free_microshit (prepare);	987	#endif
805	array_free_microshit (check);	988	array_free (idle, EMPTY0);
		989	array_free (prepare, EMPTY0);
		990	array_free (check, EMPTY0);
806		991
807	method = 0;	992	backend = 0;
808	}	993	}
809		994
810	static void	995	void inline_size infy_fork (EV_P);
		996
		997	void inline_size
811	loop_fork (EV_P)	998	loop_fork (EV_P)
812	{	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
813	#if EV_USE_EPOLL	1006	#if EV_USE_EPOLL
814	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1007	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
815	#endif	1008	#endif
816	#if EV_USE_KQUEUE	1009	#if EV_USE_INOTIFY
817	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1010	infy_fork (EV_A);
818	#endif	1011	#endif
819		1012
820	if (ev_is_active (&sigev))	1013	if (ev_is_active (&sigev))
821	{	1014	{
822	/* default loop */	1015	/* default loop */
…		…
835	postfork = 0;	1028	postfork = 0;
836	}	1029	}
837		1030
838	#if EV_MULTIPLICITY	1031	#if EV_MULTIPLICITY
839	struct ev_loop *	1032	struct ev_loop *
840	ev_loop_new (int methods)	1033	ev_loop_new (unsigned int flags)
841	{	1034	{
842	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));
843		1036
844	memset (loop, 0, sizeof (struct ev_loop));	1037	memset (loop, 0, sizeof (struct ev_loop));
845		1038
846	loop_init (EV_A_ methods);	1039	loop_init (EV_A_ flags);
847		1040
848	if (ev_method (EV_A))	1041	if (ev_backend (EV_A))
849	return loop;	1042	return loop;
850		1043
851	return 0;	1044	return 0;
852	}	1045	}
853		1046
…		…
866		1059
867	#endif	1060	#endif
868		1061
869	#if EV_MULTIPLICITY	1062	#if EV_MULTIPLICITY
870	struct ev_loop *	1063	struct ev_loop *
		1064	ev_default_loop_init (unsigned int flags)
871	#else	1065	#else
872	int	1066	int
		1067	ev_default_loop (unsigned int flags)
873	#endif	1068	#endif
874	ev_default_loop (int methods)
875	{	1069	{
876	if (sigpipe [0] == sigpipe [1])	1070	if (sigpipe [0] == sigpipe [1])
877	if (pipe (sigpipe))	1071	if (pipe (sigpipe))
878	return 0;	1072	return 0;
879		1073
880	if (!default_loop)	1074	if (!ev_default_loop_ptr)
881	{	1075	{
882	#if EV_MULTIPLICITY	1076	#if EV_MULTIPLICITY
883	struct ev_loop *loop = default_loop = &default_loop_struct;	1077	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
884	#else	1078	#else
885	default_loop = 1;	1079	ev_default_loop_ptr = 1;
886	#endif	1080	#endif
887		1081
888	loop_init (EV_A_ methods);	1082	loop_init (EV_A_ flags);
889		1083
890	if (ev_method (EV_A))	1084	if (ev_backend (EV_A))
891	{	1085	{
892	siginit (EV_A);	1086	siginit (EV_A);
893		1087
894	#ifndef WIN32	1088	#ifndef _WIN32
895	ev_signal_init (&childev, childcb, SIGCHLD);	1089	ev_signal_init (&childev, childcb, SIGCHLD);
896	ev_set_priority (&childev, EV_MAXPRI);	1090	ev_set_priority (&childev, EV_MAXPRI);
897	ev_signal_start (EV_A_ &childev);	1091	ev_signal_start (EV_A_ &childev);
898	ev_unref (EV_A); /* child watcher should not keep loop alive */	1092	ev_unref (EV_A); /* child watcher should not keep loop alive */
899	#endif	1093	#endif
900	}	1094	}
901	else	1095	else
902	default_loop = 0;	1096	ev_default_loop_ptr = 0;
903	}	1097	}
904		1098
905	return default_loop;	1099	return ev_default_loop_ptr;
906	}	1100	}
907		1101
908	void	1102	void
909	ev_default_destroy (void)	1103	ev_default_destroy (void)
910	{	1104	{
911	#if EV_MULTIPLICITY	1105	#if EV_MULTIPLICITY
912	struct ev_loop *loop = default_loop;	1106	struct ev_loop *loop = ev_default_loop_ptr;
913	#endif	1107	#endif
914		1108
915	#ifndef WIN32	1109	#ifndef _WIN32
916	ev_ref (EV_A); /* child watcher */	1110	ev_ref (EV_A); /* child watcher */
917	ev_signal_stop (EV_A_ &childev);	1111	ev_signal_stop (EV_A_ &childev);
918	#endif	1112	#endif
919		1113
920	ev_ref (EV_A); /* signal watcher */	1114	ev_ref (EV_A); /* signal watcher */
…		…
928		1122
929	void	1123	void
930	ev_default_fork (void)	1124	ev_default_fork (void)
931	{	1125	{
932	#if EV_MULTIPLICITY	1126	#if EV_MULTIPLICITY
933	struct ev_loop *loop = default_loop;	1127	struct ev_loop *loop = ev_default_loop_ptr;
934	#endif	1128	#endif
935		1129
936	if (method)	1130	if (backend)
937	postfork = 1;	1131	postfork = 1;
938	}	1132	}
939		1133
940	/*****************************************************************************/	1134	/*****************************************************************************/
941		1135
942	static int	1136	int inline_size
943	any_pending (EV_P)	1137	any_pending (EV_P)
944	{	1138	{
945	int pri;	1139	int pri;
946		1140
947	for (pri = NUMPRI; pri--; )	1141	for (pri = NUMPRI; pri--; )
…		…
949	return 1;	1143	return 1;
950		1144
951	return 0;	1145	return 0;
952	}	1146	}
953		1147
954	static void	1148	void inline_speed
955	call_pending (EV_P)	1149	call_pending (EV_P)
956	{	1150	{
957	int pri;	1151	int pri;
958		1152
959	for (pri = NUMPRI; pri--; )	1153	for (pri = NUMPRI; pri--; )
960	while (pendingcnt [pri])	1154	while (pendingcnt [pri])
961	{	1155	{
962	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1156	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
963		1157
964	if (p->w)	1158	if (expect_true (p->w))
965	{	1159	{
		1160	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1161
966	p->w->pending = 0;	1162	p->w->pending = 0;
967	EV_CB_INVOKE (p->w, p->events);	1163	EV_CB_INVOKE (p->w, p->events);
968	}	1164	}
969	}	1165	}
970	}	1166	}
971		1167
972	static void	1168	void inline_size
973	timers_reify (EV_P)	1169	timers_reify (EV_P)
974	{	1170	{
975	while (timercnt && ((WT)timers [0])->at <= mn_now)	1171	while (timercnt && ((WT)timers [0])->at <= mn_now)
976	{	1172	{
977	struct ev_timer *w = timers [0];	1173	ev_timer *w = timers [0];
978		1174
979	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1175	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
980		1176
981	/* first reschedule or stop timer */	1177	/* first reschedule or stop timer */
982	if (w->repeat)	1178	if (w->repeat)
983	{	1179	{
984	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
985	((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
986	downheap ((WT *)timers, timercnt, 0);	1186	downheap ((WT *)timers, timercnt, 0);
987	}	1187	}
988	else	1188	else
989	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1189	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
990		1190
991	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1191	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
992	}	1192	}
993	}	1193	}
994		1194
995	static void	1195	#if EV_PERIODIC_ENABLE
		1196	void inline_size
996	periodics_reify (EV_P)	1197	periodics_reify (EV_P)
997	{	1198	{
998	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1199	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
999	{	1200	{
1000	struct ev_periodic *w = periodics [0];	1201	ev_periodic *w = periodics [0];
1001		1202
1002	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1203	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1003		1204
1004	/* first reschedule or stop timer */	1205	/* first reschedule or stop timer */
1005	if (w->reschedule_cb)	1206	if (w->reschedule_cb)
1006	{	1207	{
1007	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1208	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1008
1009	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1209	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1010	downheap ((WT *)periodics, periodiccnt, 0);	1210	downheap ((WT *)periodics, periodiccnt, 0);
1011	}	1211	}
1012	else if (w->interval)	1212	else if (w->interval)
1013	{	1213	{
…		…
1020		1220
1021	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1221	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1022	}	1222	}
1023	}	1223	}
1024		1224
1025	static void	1225	static void noinline
1026	periodics_reschedule (EV_P)	1226	periodics_reschedule (EV_P)
1027	{	1227	{
1028	int i;	1228	int i;
1029		1229
1030	/* adjust periodics after time jump */	1230	/* adjust periodics after time jump */
1031	for (i = 0; i < periodiccnt; ++i)	1231	for (i = 0; i < periodiccnt; ++i)
1032	{	1232	{
1033	struct ev_periodic *w = periodics [i];	1233	ev_periodic *w = periodics [i];
1034		1234
1035	if (w->reschedule_cb)	1235	if (w->reschedule_cb)
1036	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1236	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1037	else if (w->interval)	1237	else if (w->interval)
1038	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1238	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
…		…
1040		1240
1041	/* now rebuild the heap */	1241	/* now rebuild the heap */
1042	for (i = periodiccnt >> 1; i--; )	1242	for (i = periodiccnt >> 1; i--; )
1043	downheap ((WT *)periodics, periodiccnt, i);	1243	downheap ((WT *)periodics, periodiccnt, i);
1044	}	1244	}
		1245	#endif
1045		1246
1046	inline int	1247	int inline_size
1047	time_update_monotonic (EV_P)	1248	time_update_monotonic (EV_P)
1048	{	1249	{
1049	mn_now = get_clock ();	1250	mn_now = get_clock ();
1050		1251
1051	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1252	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
…		…
1059	ev_rt_now = ev_time ();	1260	ev_rt_now = ev_time ();
1060	return 1;	1261	return 1;
1061	}	1262	}
1062	}	1263	}
1063		1264
1064	static void	1265	void inline_size
1065	time_update (EV_P)	1266	time_update (EV_P)
1066	{	1267	{
1067	int i;	1268	int i;
1068		1269
1069	#if EV_USE_MONOTONIC	1270	#if EV_USE_MONOTONIC
…		…
1071	{	1272	{
1072	if (time_update_monotonic (EV_A))	1273	if (time_update_monotonic (EV_A))
1073	{	1274	{
1074	ev_tstamp odiff = rtmn_diff;	1275	ev_tstamp odiff = rtmn_diff;
1075		1276
1076	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; )
1077	{	1286	{
1078	rtmn_diff = ev_rt_now - mn_now;	1287	rtmn_diff = ev_rt_now - mn_now;
1079		1288
1080	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1289	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1081	return; /* all is well */	1290	return; /* all is well */
…		…
1083	ev_rt_now = ev_time ();	1292	ev_rt_now = ev_time ();
1084	mn_now = get_clock ();	1293	mn_now = get_clock ();
1085	now_floor = mn_now;	1294	now_floor = mn_now;
1086	}	1295	}
1087		1296
		1297	# if EV_PERIODIC_ENABLE
1088	periodics_reschedule (EV_A);	1298	periodics_reschedule (EV_A);
		1299	# endif
1089	/* no timer adjustment, as the monotonic clock doesn't jump */	1300	/* no timer adjustment, as the monotonic clock doesn't jump */
1090	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1301	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1091	}	1302	}
1092	}	1303	}
1093	else	1304	else
…		…
1095	{	1306	{
1096	ev_rt_now = ev_time ();	1307	ev_rt_now = ev_time ();
1097		1308
1098	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1309	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1099	{	1310	{
		1311	#if EV_PERIODIC_ENABLE
1100	periodics_reschedule (EV_A);	1312	periodics_reschedule (EV_A);
		1313	#endif
1101		1314
1102	/* 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 */
1103	for (i = 0; i < timercnt; ++i)	1316	for (i = 0; i < timercnt; ++i)
1104	((WT)timers [i])->at += ev_rt_now - mn_now;	1317	((WT)timers [i])->at += ev_rt_now - mn_now;
1105	}	1318	}
1106		1319
1107	mn_now = ev_rt_now;	1320	mn_now = ev_rt_now;
…		…
1123	static int loop_done;	1336	static int loop_done;
1124		1337
1125	void	1338	void
1126	ev_loop (EV_P_ int flags)	1339	ev_loop (EV_P_ int flags)
1127	{	1340	{
1128	double block;
1129	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1341	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1342	? EVUNLOOP_ONE
		1343	: EVUNLOOP_CANCEL;
1130		1344
1131	do	1345	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1346
		1347	while (activecnt)
1132	{	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
1133	/* queue check watchers (and execute them) */	1368	/* queue check watchers (and execute them) */
1134	if (expect_false (preparecnt))	1369	if (expect_false (preparecnt))
1135	{	1370	{
1136	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1371	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1137	call_pending (EV_A);	1372	call_pending (EV_A);
…		…
1143		1378
1144	/* update fd-related kernel structures */	1379	/* update fd-related kernel structures */
1145	fd_reify (EV_A);	1380	fd_reify (EV_A);
1146		1381
1147	/* calculate blocking time */	1382	/* calculate blocking time */
		1383	{
		1384	ev_tstamp block;
1148		1385
1149	/* we only need this for !monotonic clock or timers, but as we basically	1386	if (flags & EVLOOP_NONBLOCK || idlecnt)
1150	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 */
1151	#if EV_USE_MONOTONIC	1391	#if EV_USE_MONOTONIC
1152	if (expect_true (have_monotonic))	1392	if (expect_true (have_monotonic))
1153	time_update_monotonic (EV_A);	1393	time_update_monotonic (EV_A);
1154	else	1394	else
1155	#endif	1395	#endif
1156	{	1396	{
1157	ev_rt_now = ev_time ();	1397	ev_rt_now = ev_time ();
1158	mn_now = ev_rt_now;	1398	mn_now = ev_rt_now;
1159	}	1399	}
1160		1400
1161	if (flags & EVLOOP_NONBLOCK || idlecnt)
1162	block = 0.;
1163	else
1164	{
1165	block = MAX_BLOCKTIME;	1401	block = MAX_BLOCKTIME;
1166		1402
1167	if (timercnt)	1403	if (timercnt)
1168	{	1404	{
1169	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1405	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1170	if (block > to) block = to;	1406	if (block > to) block = to;
1171	}	1407	}
1172		1408
		1409	#if EV_PERIODIC_ENABLE
1173	if (periodiccnt)	1410	if (periodiccnt)
1174	{	1411	{
1175	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1412	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1176	if (block > to) block = to;	1413	if (block > to) block = to;
1177	}	1414	}
		1415	#endif
1178		1416
1179	if (block < 0.) block = 0.;	1417	if (expect_false (block < 0.)) block = 0.;
1180	}	1418	}
1181		1419
1182	method_poll (EV_A_ block);	1420	backend_poll (EV_A_ block);
		1421	}
1183		1422
1184	/* update ev_rt_now, do magic */	1423	/* update ev_rt_now, do magic */
1185	time_update (EV_A);	1424	time_update (EV_A);
1186		1425
1187	/* queue pending timers and reschedule them */	1426	/* queue pending timers and reschedule them */
1188	timers_reify (EV_A); /* relative timers called last */	1427	timers_reify (EV_A); /* relative timers called last */
		1428	#if EV_PERIODIC_ENABLE
1189	periodics_reify (EV_A); /* absolute timers called first */	1429	periodics_reify (EV_A); /* absolute timers called first */
		1430	#endif
1190		1431
1191	/* queue idle watchers unless io or timers are pending */	1432	/* queue idle watchers unless other events are pending */
1192	if (idlecnt && !any_pending (EV_A))	1433	if (idlecnt && !any_pending (EV_A))
1193	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1434	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1194		1435
1195	/* queue check watchers, to be executed first */	1436	/* queue check watchers, to be executed first */
1196	if (checkcnt)	1437	if (expect_false (checkcnt))
1197	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1438	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1198		1439
1199	call_pending (EV_A);	1440	call_pending (EV_A);
1200	}
1201	while (activecnt && !loop_done);
1202		1441
1203	if (loop_done != 2)	1442	if (expect_false (loop_done))
1204	loop_done = 0;	1443	break;
		1444	}
		1445
		1446	if (loop_done == EVUNLOOP_ONE)
		1447	loop_done = EVUNLOOP_CANCEL;
1205	}	1448	}
1206		1449
1207	void	1450	void
1208	ev_unloop (EV_P_ int how)	1451	ev_unloop (EV_P_ int how)
1209	{	1452	{
1210	loop_done = how;	1453	loop_done = how;
1211	}	1454	}
1212		1455
1213	/*****************************************************************************/	1456	/*****************************************************************************/
1214		1457
1215	inline void	1458	void inline_size
1216	wlist_add (WL *head, WL elem)	1459	wlist_add (WL *head, WL elem)
1217	{	1460	{
1218	elem->next = *head;	1461	elem->next = *head;
1219	*head = elem;	1462	*head = elem;
1220	}	1463	}
1221		1464
1222	inline void	1465	void inline_size
1223	wlist_del (WL *head, WL elem)	1466	wlist_del (WL *head, WL elem)
1224	{	1467	{
1225	while (*head)	1468	while (*head)
1226	{	1469	{
1227	if (*head == elem)	1470	if (*head == elem)
…		…
1232		1475
1233	head = &(*head)->next;	1476	head = &(*head)->next;
1234	}	1477	}
1235	}	1478	}
1236		1479
1237	inline void	1480	void inline_speed
1238	ev_clear_pending (EV_P_ W w)	1481	ev_clear_pending (EV_P_ W w)
1239	{	1482	{
1240	if (w->pending)	1483	if (w->pending)
1241	{	1484	{
1242	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1485	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1243	w->pending = 0;	1486	w->pending = 0;
1244	}	1487	}
1245	}	1488	}
1246		1489
1247	inline void	1490	void inline_speed
1248	ev_start (EV_P_ W w, int active)	1491	ev_start (EV_P_ W w, int active)
1249	{	1492	{
1250	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1493	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1251	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1494	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1252		1495
1253	w->active = active;	1496	w->active = active;
1254	ev_ref (EV_A);	1497	ev_ref (EV_A);
1255	}	1498	}
1256		1499
1257	inline void	1500	void inline_size
1258	ev_stop (EV_P_ W w)	1501	ev_stop (EV_P_ W w)
1259	{	1502	{
1260	ev_unref (EV_A);	1503	ev_unref (EV_A);
1261	w->active = 0;	1504	w->active = 0;
1262	}	1505	}
1263		1506
1264	/*****************************************************************************/	1507	/*****************************************************************************/
1265		1508
1266	void	1509	void
1267	ev_io_start (EV_P_ struct ev_io *w)	1510	ev_io_start (EV_P_ ev_io *w)
1268	{	1511	{
1269	int fd = w->fd;	1512	int fd = w->fd;
1270		1513
1271	if (ev_is_active (w))	1514	if (expect_false (ev_is_active (w)))
1272	return;	1515	return;
1273		1516
1274	assert (("ev_io_start called with negative fd", fd >= 0));	1517	assert (("ev_io_start called with negative fd", fd >= 0));
1275		1518
1276	ev_start (EV_A_ (W)w, 1);	1519	ev_start (EV_A_ (W)w, 1);
…		…
1279		1522
1280	fd_change (EV_A_ fd);	1523	fd_change (EV_A_ fd);
1281	}	1524	}
1282		1525
1283	void	1526	void
1284	ev_io_stop (EV_P_ struct ev_io *w)	1527	ev_io_stop (EV_P_ ev_io *w)
1285	{	1528	{
1286	ev_clear_pending (EV_A_ (W)w);	1529	ev_clear_pending (EV_A_ (W)w);
1287	if (!ev_is_active (w))	1530	if (expect_false (!ev_is_active (w)))
1288	return;	1531	return;
		1532
		1533	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1289		1534
1290	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1535	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1291	ev_stop (EV_A_ (W)w);	1536	ev_stop (EV_A_ (W)w);
1292		1537
1293	fd_change (EV_A_ w->fd);	1538	fd_change (EV_A_ w->fd);
1294	}	1539	}
1295		1540
1296	void	1541	void
1297	ev_timer_start (EV_P_ struct ev_timer *w)	1542	ev_timer_start (EV_P_ ev_timer *w)
1298	{	1543	{
1299	if (ev_is_active (w))	1544	if (expect_false (ev_is_active (w)))
1300	return;	1545	return;
1301		1546
1302	((WT)w)->at += mn_now;	1547	((WT)w)->at += mn_now;
1303		1548
1304	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.));
1305		1550
1306	ev_start (EV_A_ (W)w, ++timercnt);	1551	ev_start (EV_A_ (W)w, ++timercnt);
1307	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1552	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1308	timers [timercnt - 1] = w;	1553	timers [timercnt - 1] = w;
1309	upheap ((WT *)timers, timercnt - 1);	1554	upheap ((WT *)timers, timercnt - 1);
1310		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
1311	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1566	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1312	}
1313		1567
1314	void	1568	{
1315	ev_timer_stop (EV_P_ struct ev_timer *w)	1569	int active = ((W)w)->active;
1316	{
1317	ev_clear_pending (EV_A_ (W)w);
1318	if (!ev_is_active (w))
1319	return;
1320		1570
1321	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1571	if (expect_true (--active < --timercnt))
1322
1323	if (((W)w)->active < timercnt--)
1324	{	1572	{
1325	timers [((W)w)->active - 1] = timers [timercnt];	1573	timers [active] = timers [timercnt];
1326	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1574	adjustheap ((WT *)timers, timercnt, active);
1327	}	1575	}
		1576	}
1328		1577
1329	((WT)w)->at = w->repeat;	1578	((WT)w)->at -= mn_now;
1330		1579
1331	ev_stop (EV_A_ (W)w);	1580	ev_stop (EV_A_ (W)w);
1332	}	1581	}
1333		1582
1334	void	1583	void
1335	ev_timer_again (EV_P_ struct ev_timer *w)	1584	ev_timer_again (EV_P_ ev_timer *w)
1336	{	1585	{
1337	if (ev_is_active (w))	1586	if (ev_is_active (w))
1338	{	1587	{
1339	if (w->repeat)	1588	if (w->repeat)
		1589	{
		1590	((WT)w)->at = mn_now + w->repeat;
1340	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1591	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
		1592	}
1341	else	1593	else
1342	ev_timer_stop (EV_A_ w);	1594	ev_timer_stop (EV_A_ w);
1343	}	1595	}
1344	else if (w->repeat)	1596	else if (w->repeat)
		1597	{
		1598	w->at = w->repeat;
1345	ev_timer_start (EV_A_ w);	1599	ev_timer_start (EV_A_ w);
		1600	}
1346	}	1601	}
1347		1602
		1603	#if EV_PERIODIC_ENABLE
1348	void	1604	void
1349	ev_periodic_start (EV_P_ struct ev_periodic *w)	1605	ev_periodic_start (EV_P_ ev_periodic *w)
1350	{	1606	{
1351	if (ev_is_active (w))	1607	if (expect_false (ev_is_active (w)))
1352	return;	1608	return;
1353		1609
1354	if (w->reschedule_cb)	1610	if (w->reschedule_cb)
1355	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1611	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1356	else if (w->interval)	1612	else if (w->interval)
…		…
1359	/* 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 */
1360	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1616	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1361	}	1617	}
1362		1618
1363	ev_start (EV_A_ (W)w, ++periodiccnt);	1619	ev_start (EV_A_ (W)w, ++periodiccnt);
1364	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1620	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1365	periodics [periodiccnt - 1] = w;	1621	periodics [periodiccnt - 1] = w;
1366	upheap ((WT *)periodics, periodiccnt - 1);	1622	upheap ((WT *)periodics, periodiccnt - 1);
1367		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
1368	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1634	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1369	}
1370		1635
1371	void	1636	{
1372	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1637	int active = ((W)w)->active;
1373	{
1374	ev_clear_pending (EV_A_ (W)w);
1375	if (!ev_is_active (w))
1376	return;
1377		1638
1378	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1639	if (expect_true (--active < --periodiccnt))
1379
1380	if (((W)w)->active < periodiccnt--)
1381	{	1640	{
1382	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1641	periodics [active] = periodics [periodiccnt];
1383	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1642	adjustheap ((WT *)periodics, periodiccnt, active);
1384	}	1643	}
		1644	}
1385		1645
1386	ev_stop (EV_A_ (W)w);	1646	ev_stop (EV_A_ (W)w);
1387	}	1647	}
1388		1648
1389	void	1649	void
1390	ev_periodic_again (EV_P_ struct ev_periodic *w)	1650	ev_periodic_again (EV_P_ ev_periodic *w)
1391	{	1651	{
1392	/* TODO: use adjustheap and recalculation */	1652	/* TODO: use adjustheap and recalculation */
1393	ev_periodic_stop (EV_A_ w);	1653	ev_periodic_stop (EV_A_ w);
1394	ev_periodic_start (EV_A_ w);	1654	ev_periodic_start (EV_A_ w);
1395	}	1655	}
1396		1656	#endif
1397	void
1398	ev_idle_start (EV_P_ struct ev_idle *w)
1399	{
1400	if (ev_is_active (w))
1401	return;
1402
1403	ev_start (EV_A_ (W)w, ++idlecnt);
1404	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1405	idles [idlecnt - 1] = w;
1406	}
1407
1408	void
1409	ev_idle_stop (EV_P_ struct ev_idle *w)
1410	{
1411	ev_clear_pending (EV_A_ (W)w);
1412	if (ev_is_active (w))
1413	return;
1414
1415	idles [((W)w)->active - 1] = idles [--idlecnt];
1416	ev_stop (EV_A_ (W)w);
1417	}
1418
1419	void
1420	ev_prepare_start (EV_P_ struct ev_prepare *w)
1421	{
1422	if (ev_is_active (w))
1423	return;
1424
1425	ev_start (EV_A_ (W)w, ++preparecnt);
1426	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1427	prepares [preparecnt - 1] = w;
1428	}
1429
1430	void
1431	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1432	{
1433	ev_clear_pending (EV_A_ (W)w);
1434	if (ev_is_active (w))
1435	return;
1436
1437	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1438	ev_stop (EV_A_ (W)w);
1439	}
1440
1441	void
1442	ev_check_start (EV_P_ struct ev_check *w)
1443	{
1444	if (ev_is_active (w))
1445	return;
1446
1447	ev_start (EV_A_ (W)w, ++checkcnt);
1448	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1449	checks [checkcnt - 1] = w;
1450	}
1451
1452	void
1453	ev_check_stop (EV_P_ struct ev_check *w)
1454	{
1455	ev_clear_pending (EV_A_ (W)w);
1456	if (ev_is_active (w))
1457	return;
1458
1459	checks [((W)w)->active - 1] = checks [--checkcnt];
1460	ev_stop (EV_A_ (W)w);
1461	}
1462		1657
1463	#ifndef SA_RESTART	1658	#ifndef SA_RESTART
1464	# define SA_RESTART 0	1659	# define SA_RESTART 0
1465	#endif	1660	#endif
1466		1661
1467	void	1662	void
1468	ev_signal_start (EV_P_ struct ev_signal *w)	1663	ev_signal_start (EV_P_ ev_signal *w)
1469	{	1664	{
1470	#if EV_MULTIPLICITY	1665	#if EV_MULTIPLICITY
1471	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));
1472	#endif	1667	#endif
1473	if (ev_is_active (w))	1668	if (expect_false (ev_is_active (w)))
1474	return;	1669	return;
1475		1670
1476	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));
1477		1672
1478	ev_start (EV_A_ (W)w, 1);	1673	ev_start (EV_A_ (W)w, 1);
1479	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1674	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1480	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1675	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1481		1676
1482	if (!((WL)w)->next)	1677	if (!((WL)w)->next)
1483	{	1678	{
1484	#if WIN32	1679	#if _WIN32
1485	signal (w->signum, sighandler);	1680	signal (w->signum, sighandler);
1486	#else	1681	#else
1487	struct sigaction sa;	1682	struct sigaction sa;
1488	sa.sa_handler = sighandler;	1683	sa.sa_handler = sighandler;
1489	sigfillset (&sa.sa_mask);	1684	sigfillset (&sa.sa_mask);
…		…
1492	#endif	1687	#endif
1493	}	1688	}
1494	}	1689	}
1495		1690
1496	void	1691	void
1497	ev_signal_stop (EV_P_ struct ev_signal *w)	1692	ev_signal_stop (EV_P_ ev_signal *w)
1498	{	1693	{
1499	ev_clear_pending (EV_A_ (W)w);	1694	ev_clear_pending (EV_A_ (W)w);
1500	if (!ev_is_active (w))	1695	if (expect_false (!ev_is_active (w)))
1501	return;	1696	return;
1502		1697
1503	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1698	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1504	ev_stop (EV_A_ (W)w);	1699	ev_stop (EV_A_ (W)w);
1505		1700
1506	if (!signals [w->signum - 1].head)	1701	if (!signals [w->signum - 1].head)
1507	signal (w->signum, SIG_DFL);	1702	signal (w->signum, SIG_DFL);
1508	}	1703	}
1509		1704
1510	void	1705	void
1511	ev_child_start (EV_P_ struct ev_child *w)	1706	ev_child_start (EV_P_ ev_child *w)
1512	{	1707	{
1513	#if EV_MULTIPLICITY	1708	#if EV_MULTIPLICITY
1514	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));
1515	#endif	1710	#endif
1516	if (ev_is_active (w))	1711	if (expect_false (ev_is_active (w)))
1517	return;	1712	return;
1518		1713
1519	ev_start (EV_A_ (W)w, 1);	1714	ev_start (EV_A_ (W)w, 1);
1520	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1715	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1521	}	1716	}
1522		1717
1523	void	1718	void
1524	ev_child_stop (EV_P_ struct ev_child *w)	1719	ev_child_stop (EV_P_ ev_child *w)
1525	{	1720	{
1526	ev_clear_pending (EV_A_ (W)w);	1721	ev_clear_pending (EV_A_ (W)w);
1527	if (ev_is_active (w))	1722	if (expect_false (!ev_is_active (w)))
1528	return;	1723	return;
1529		1724
1530	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1725	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1531	ev_stop (EV_A_ (W)w);	1726	ev_stop (EV_A_ (W)w);
1532	}	1727	}
1533		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
1534	/*****************************************************************************/	2139	/*****************************************************************************/
1535		2140
1536	struct ev_once	2141	struct ev_once
1537	{	2142	{
1538	struct ev_io io;	2143	ev_io io;
1539	struct ev_timer to;	2144	ev_timer to;
1540	void (*cb)(int revents, void *arg);	2145	void (*cb)(int revents, void *arg);
1541	void *arg;	2146	void *arg;
1542	};	2147	};
1543		2148
1544	static void	2149	static void
…		…
1553		2158
1554	cb (revents, arg);	2159	cb (revents, arg);
1555	}	2160	}
1556		2161
1557	static void	2162	static void
1558	once_cb_io (EV_P_ struct ev_io *w, int revents)	2163	once_cb_io (EV_P_ ev_io *w, int revents)
1559	{	2164	{
1560	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);
1561	}	2166	}
1562		2167
1563	static void	2168	static void
1564	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2169	once_cb_to (EV_P_ ev_timer *w, int revents)
1565	{	2170	{
1566	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);
1567	}	2172	}
1568		2173
1569	void	2174	void
1570	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)
1571	{	2176	{
1572	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));
1573		2178
1574	if (!once)	2179	if (expect_false (!once))
		2180	{
1575	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2181	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1576	else	2182	return;
1577	{	2183	}
		2184
1578	once->cb = cb;	2185	once->cb = cb;
1579	once->arg = arg;	2186	once->arg = arg;
1580		2187
1581	ev_init (&once->io, once_cb_io);	2188	ev_init (&once->io, once_cb_io);
1582	if (fd >= 0)	2189	if (fd >= 0)
1583	{	2190	{
1584	ev_io_set (&once->io, fd, events);	2191	ev_io_set (&once->io, fd, events);
1585	ev_io_start (EV_A_ &once->io);	2192	ev_io_start (EV_A_ &once->io);
1586	}	2193	}
1587		2194
1588	ev_init (&once->to, once_cb_to);	2195	ev_init (&once->to, once_cb_to);
1589	if (timeout >= 0.)	2196	if (timeout >= 0.)
1590	{	2197	{
1591	ev_timer_set (&once->to, timeout, 0.);	2198	ev_timer_set (&once->to, timeout, 0.);
1592	ev_timer_start (EV_A_ &once->to);	2199	ev_timer_start (EV_A_ &once->to);
1593	}
1594	}	2200	}
1595	}	2201	}
1596		2202
		2203	#ifdef __cplusplus
		2204	}
		2205	#endif
		2206

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