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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 1.155 by root, Wed Nov 28 17:32:24 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 */	594	/* this should be highly optimised to not do anything but set a flag */
…		…
479	}	600	}
480	}	601	}
481		602
482	/*****************************************************************************/	603	/*****************************************************************************/
483		604
484	static void	605	void inline_speed
485	upheap (WT *heap, int k)	606	upheap (WT *heap, int k)
486	{	607	{
487	WT w = heap [k];	608	WT w = heap [k];
488		609
489	while (k && heap [k >> 1]->at > w->at)	610	while (k && heap [k >> 1]->at > w->at)
…		…
496	heap [k] = w;	617	heap [k] = w;
497	((W)heap [k])->active = k + 1;	618	((W)heap [k])->active = k + 1;
498		619
499	}	620	}
500		621
501	static void	622	void inline_speed
502	downheap (WT *heap, int N, int k)	623	downheap (WT *heap, int N, int k)
503	{	624	{
504	WT w = heap [k];	625	WT w = heap [k];
505		626
506	while (k < (N >> 1))	627	while (k < (N >> 1))
…		…
520		641
521	heap [k] = w;	642	heap [k] = w;
522	((W)heap [k])->active = k + 1;	643	((W)heap [k])->active = k + 1;
523	}	644	}
524		645
525	inline void	646	void inline_size
526	adjustheap (WT *heap, int N, int k, ev_tstamp at)	647	adjustheap (WT *heap, int N, int k)
527	{	648	{
528	ev_tstamp old_at = heap [k]->at;	649	upheap (heap, k);
529	heap [k]->at = at;
530
531	if (old_at < at)
532	downheap (heap, N, k);	650	downheap (heap, N, k);
533	else
534	upheap (heap, k);
535	}	651	}
536		652
537	/*****************************************************************************/	653	/*****************************************************************************/
538		654
539	typedef struct	655	typedef struct
…		…
545	static ANSIG *signals;	661	static ANSIG *signals;
546	static int signalmax;	662	static int signalmax;
547		663
548	static int sigpipe [2];	664	static int sigpipe [2];
549	static sig_atomic_t volatile gotsig;	665	static sig_atomic_t volatile gotsig;
550	static struct ev_io sigev;	666	static ev_io sigev;
551		667
552	static void	668	void inline_size
553	signals_init (ANSIG *base, int count)	669	signals_init (ANSIG *base, int count)
554	{	670	{
555	while (count--)	671	while (count--)
556	{	672	{
557	base->head = 0;	673	base->head = 0;
…		…
562	}	678	}
563		679
564	static void	680	static void
565	sighandler (int signum)	681	sighandler (int signum)
566	{	682	{
567	#if WIN32	683	#if _WIN32
568	signal (signum, sighandler);	684	signal (signum, sighandler);
569	#endif	685	#endif
570		686
571	signals [signum - 1].gotsig = 1;	687	signals [signum - 1].gotsig = 1;
572		688
573	if (!gotsig)	689	if (!gotsig)
574	{	690	{
575	int old_errno = errno;	691	int old_errno = errno;
576	gotsig = 1;	692	gotsig = 1;
577	#ifdef WIN32
578	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
579	#else
580	write (sigpipe [1], &signum, 1);	693	write (sigpipe [1], &signum, 1);
581	#endif
582	errno = old_errno;	694	errno = old_errno;
583	}	695	}
584	}	696	}
585		697
586	void	698	void noinline
587	ev_feed_signal_event (EV_P_ int signum)	699	ev_feed_signal_event (EV_P_ int signum)
588	{	700	{
589	WL w;	701	WL w;
590		702
591	#if EV_MULTIPLICITY	703	#if EV_MULTIPLICITY
592	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	704	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
593	#endif	705	#endif
594		706
595	--signum;	707	--signum;
596		708
597	if (signum < 0 || signum >= signalmax)	709	if (signum < 0 || signum >= signalmax)
…		…
602	for (w = signals [signum].head; w; w = w->next)	714	for (w = signals [signum].head; w; w = w->next)
603	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	715	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
604	}	716	}
605		717
606	static void	718	static void
607	sigcb (EV_P_ struct ev_io *iow, int revents)	719	sigcb (EV_P_ ev_io *iow, int revents)
608	{	720	{
609	int signum;	721	int signum;
610		722
611	#ifdef WIN32
612	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
613	#else
614	read (sigpipe [0], &revents, 1);	723	read (sigpipe [0], &revents, 1);
615	#endif
616	gotsig = 0;	724	gotsig = 0;
617		725
618	for (signum = signalmax; signum--; )	726	for (signum = signalmax; signum--; )
619	if (signals [signum].gotsig)	727	if (signals [signum].gotsig)
620	ev_feed_signal_event (EV_A_ signum + 1);	728	ev_feed_signal_event (EV_A_ signum + 1);
621	}	729	}
622		730
623	static void	731	void inline_size
		732	fd_intern (int fd)
		733	{
		734	#ifdef _WIN32
		735	int arg = 1;
		736	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		737	#else
		738	fcntl (fd, F_SETFD, FD_CLOEXEC);
		739	fcntl (fd, F_SETFL, O_NONBLOCK);
		740	#endif
		741	}
		742
		743	static void noinline
624	siginit (EV_P)	744	siginit (EV_P)
625	{	745	{
626	#ifndef WIN32	746	fd_intern (sigpipe [0]);
627	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	747	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		748
635	ev_io_set (&sigev, sigpipe [0], EV_READ);	749	ev_io_set (&sigev, sigpipe [0], EV_READ);
636	ev_io_start (EV_A_ &sigev);	750	ev_io_start (EV_A_ &sigev);
637	ev_unref (EV_A); /* child watcher should not keep loop alive */	751	ev_unref (EV_A); /* child watcher should not keep loop alive */
638	}	752	}
639		753
640	/*****************************************************************************/	754	/*****************************************************************************/
641		755
642	static struct ev_child *childs [PID_HASHSIZE];	756	static ev_child *childs [EV_PID_HASHSIZE];
643		757
644	#ifndef WIN32	758	#ifndef _WIN32
645		759
646	static struct ev_signal childev;	760	static ev_signal childev;
647		761
648	#ifndef WCONTINUED	762	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)	763	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
654	{	764	{
655	struct ev_child *w;	765	ev_child *w;
656		766
657	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	767	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
658	if (w->pid == pid || !w->pid)	768	if (w->pid == pid || !w->pid)
659	{	769	{
660	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	770	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
661	w->rpid = pid;	771	w->rpid = pid;
662	w->rstatus = status;	772	w->rstatus = status;
663	ev_feed_event (EV_A_ (W)w, EV_CHILD);	773	ev_feed_event (EV_A_ (W)w, EV_CHILD);
664	}	774	}
665	}	775	}
666		776
		777	#ifndef WCONTINUED
		778	# define WCONTINUED 0
		779	#endif
		780
667	static void	781	static void
668	childcb (EV_P_ struct ev_signal *sw, int revents)	782	childcb (EV_P_ ev_signal *sw, int revents)
669	{	783	{
670	int pid, status;	784	int pid, status;
671		785
		786	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
672	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	787	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
673	{	788	if (!WCONTINUED
		789	|| errno != EINVAL
		790	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		791	return;
		792
674	/* make sure we are called again until all childs have been reaped */	793	/* make sure we are called again until all childs have been reaped */
		794	/* 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);	795	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
676		796
677	child_reap (EV_A_ sw, pid, pid, status);	797	child_reap (EV_A_ sw, pid, pid, status);
		798	if (EV_PID_HASHSIZE > 1)
678	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	799	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
679	}
680	}	800	}
681		801
682	#endif	802	#endif
683		803
684	/*****************************************************************************/	804	/*****************************************************************************/
685		805
		806	#if EV_USE_PORT
		807	# include "ev_port.c"
		808	#endif
686	#if EV_USE_KQUEUE	809	#if EV_USE_KQUEUE
687	# include "ev_kqueue.c"	810	# include "ev_kqueue.c"
688	#endif	811	#endif
689	#if EV_USE_EPOLL	812	#if EV_USE_EPOLL
690	# include "ev_epoll.c"	813	# include "ev_epoll.c"
…		…
707	{	830	{
708	return EV_VERSION_MINOR;	831	return EV_VERSION_MINOR;
709	}	832	}
710		833
711	/* return true if we are running with elevated privileges and should ignore env variables */	834	/* return true if we are running with elevated privileges and should ignore env variables */
712	static int	835	int inline_size
713	enable_secure (void)	836	enable_secure (void)
714	{	837	{
715	#ifdef WIN32	838	#ifdef _WIN32
716	return 0;	839	return 0;
717	#else	840	#else
718	return getuid () != geteuid ()	841	return getuid () != geteuid ()
719	|| getgid () != getegid ();	842	|| getgid () != getegid ();
720	#endif	843	#endif
721	}	844	}
722		845
723	int	846	unsigned int
724	ev_method (EV_P)	847	ev_supported_backends (void)
725	{	848	{
726	return method;	849	unsigned int flags = 0;
727	}
728		850
729	static void	851	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
730	loop_init (EV_P_ int methods)	852	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		853	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		854	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		855	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		856
		857	return flags;
		858	}
		859
		860	unsigned int
		861	ev_recommended_backends (void)
731	{	862	{
732	if (!method)	863	unsigned int flags = ev_supported_backends ();
		864
		865	#ifndef __NetBSD__
		866	/* kqueue is borked on everything but netbsd apparently */
		867	/* it usually doesn't work correctly on anything but sockets and pipes */
		868	flags &= ~EVBACKEND_KQUEUE;
		869	#endif
		870	#ifdef __APPLE__
		871	// flags &= ~EVBACKEND_KQUEUE; for documentation
		872	flags &= ~EVBACKEND_POLL;
		873	#endif
		874
		875	return flags;
		876	}
		877
		878	unsigned int
		879	ev_embeddable_backends (void)
		880	{
		881	return EVBACKEND_EPOLL
		882	| EVBACKEND_KQUEUE
		883	| EVBACKEND_PORT;
		884	}
		885
		886	unsigned int
		887	ev_backend (EV_P)
		888	{
		889	return backend;
		890	}
		891
		892	static void noinline
		893	loop_init (EV_P_ unsigned int flags)
		894	{
		895	if (!backend)
733	{	896	{
734	#if EV_USE_MONOTONIC	897	#if EV_USE_MONOTONIC
735	{	898	{
736	struct timespec ts;	899	struct timespec ts;
737	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	900	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
742	ev_rt_now = ev_time ();	905	ev_rt_now = ev_time ();
743	mn_now = get_clock ();	906	mn_now = get_clock ();
744	now_floor = mn_now;	907	now_floor = mn_now;
745	rtmn_diff = ev_rt_now - mn_now;	908	rtmn_diff = ev_rt_now - mn_now;
746		909
747	if (methods == EVMETHOD_AUTO)	910	if (!(flags & EVFLAG_NOENV)
748	if (!enable_secure () && getenv ("LIBEV_METHODS"))	911	&& !enable_secure ()
		912	&& getenv ("LIBEV_FLAGS"))
749	methods = atoi (getenv ("LIBEV_METHODS"));	913	flags = atoi (getenv ("LIBEV_FLAGS"));
750	else
751	methods = EVMETHOD_ANY;
752		914
753	method = 0;	915	if (!(flags & 0x0000ffffUL))
		916	flags |= ev_recommended_backends ();
		917
		918	backend = 0;
		919	backend_fd = -1;
754	#if EV_USE_WIN32	920	#if EV_USE_INOTIFY
755	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	921	fs_fd = -2;
		922	#endif
		923
		924	#if EV_USE_PORT
		925	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
756	#endif	926	#endif
757	#if EV_USE_KQUEUE	927	#if EV_USE_KQUEUE
758	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	928	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
759	#endif	929	#endif
760	#if EV_USE_EPOLL	930	#if EV_USE_EPOLL
761	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	931	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
762	#endif	932	#endif
763	#if EV_USE_POLL	933	#if EV_USE_POLL
764	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	934	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
765	#endif	935	#endif
766	#if EV_USE_SELECT	936	#if EV_USE_SELECT
767	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	937	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
768	#endif	938	#endif
769		939
770	ev_init (&sigev, sigcb);	940	ev_init (&sigev, sigcb);
771	ev_set_priority (&sigev, EV_MAXPRI);	941	ev_set_priority (&sigev, EV_MAXPRI);
772	}	942	}
773	}	943	}
774		944
775	void	945	static void noinline
776	loop_destroy (EV_P)	946	loop_destroy (EV_P)
777	{	947	{
778	int i;	948	int i;
779		949
780	#if EV_USE_WIN32	950	#if EV_USE_INOTIFY
781	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	951	if (fs_fd >= 0)
		952	close (fs_fd);
		953	#endif
		954
		955	if (backend_fd >= 0)
		956	close (backend_fd);
		957
		958	#if EV_USE_PORT
		959	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
782	#endif	960	#endif
783	#if EV_USE_KQUEUE	961	#if EV_USE_KQUEUE
784	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	962	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
785	#endif	963	#endif
786	#if EV_USE_EPOLL	964	#if EV_USE_EPOLL
787	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	965	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
788	#endif	966	#endif
789	#if EV_USE_POLL	967	#if EV_USE_POLL
790	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	968	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
791	#endif	969	#endif
792	#if EV_USE_SELECT	970	#if EV_USE_SELECT
793	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	971	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
794	#endif	972	#endif
795		973
796	for (i = NUMPRI; i--; )	974	for (i = NUMPRI; i--; )
797	array_free (pending, [i]);	975	array_free (pending, [i]);
798		976
799	/* have to use the microsoft-never-gets-it-right macro */	977	/* have to use the microsoft-never-gets-it-right macro */
800	array_free_microshit (fdchange);	978	array_free (fdchange, EMPTY0);
801	array_free_microshit (timer);	979	array_free (timer, EMPTY0);
802	array_free_microshit (periodic);	980	#if EV_PERIODIC_ENABLE
803	array_free_microshit (idle);	981	array_free (periodic, EMPTY0);
804	array_free_microshit (prepare);	982	#endif
805	array_free_microshit (check);	983	array_free (idle, EMPTY0);
		984	array_free (prepare, EMPTY0);
		985	array_free (check, EMPTY0);
806		986
807	method = 0;	987	backend = 0;
808	}	988	}
809		989
810	static void	990	void inline_size infy_fork (EV_P);
		991
		992	void inline_size
811	loop_fork (EV_P)	993	loop_fork (EV_P)
812	{	994	{
		995	#if EV_USE_PORT
		996	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		997	#endif
		998	#if EV_USE_KQUEUE
		999	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1000	#endif
813	#if EV_USE_EPOLL	1001	#if EV_USE_EPOLL
814	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1002	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
815	#endif	1003	#endif
816	#if EV_USE_KQUEUE	1004	#if EV_USE_INOTIFY
817	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1005	infy_fork (EV_A);
818	#endif	1006	#endif
819		1007
820	if (ev_is_active (&sigev))	1008	if (ev_is_active (&sigev))
821	{	1009	{
822	/* default loop */	1010	/* default loop */
…		…
835	postfork = 0;	1023	postfork = 0;
836	}	1024	}
837		1025
838	#if EV_MULTIPLICITY	1026	#if EV_MULTIPLICITY
839	struct ev_loop *	1027	struct ev_loop *
840	ev_loop_new (int methods)	1028	ev_loop_new (unsigned int flags)
841	{	1029	{
842	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1030	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
843		1031
844	memset (loop, 0, sizeof (struct ev_loop));	1032	memset (loop, 0, sizeof (struct ev_loop));
845		1033
846	loop_init (EV_A_ methods);	1034	loop_init (EV_A_ flags);
847		1035
848	if (ev_method (EV_A))	1036	if (ev_backend (EV_A))
849	return loop;	1037	return loop;
850		1038
851	return 0;	1039	return 0;
852	}	1040	}
853		1041
…		…
866		1054
867	#endif	1055	#endif
868		1056
869	#if EV_MULTIPLICITY	1057	#if EV_MULTIPLICITY
870	struct ev_loop *	1058	struct ev_loop *
		1059	ev_default_loop_init (unsigned int flags)
871	#else	1060	#else
872	int	1061	int
		1062	ev_default_loop (unsigned int flags)
873	#endif	1063	#endif
874	ev_default_loop (int methods)
875	{	1064	{
876	if (sigpipe [0] == sigpipe [1])	1065	if (sigpipe [0] == sigpipe [1])
877	if (pipe (sigpipe))	1066	if (pipe (sigpipe))
878	return 0;	1067	return 0;
879		1068
880	if (!default_loop)	1069	if (!ev_default_loop_ptr)
881	{	1070	{
882	#if EV_MULTIPLICITY	1071	#if EV_MULTIPLICITY
883	struct ev_loop *loop = default_loop = &default_loop_struct;	1072	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
884	#else	1073	#else
885	default_loop = 1;	1074	ev_default_loop_ptr = 1;
886	#endif	1075	#endif
887		1076
888	loop_init (EV_A_ methods);	1077	loop_init (EV_A_ flags);
889		1078
890	if (ev_method (EV_A))	1079	if (ev_backend (EV_A))
891	{	1080	{
892	siginit (EV_A);	1081	siginit (EV_A);
893		1082
894	#ifndef WIN32	1083	#ifndef _WIN32
895	ev_signal_init (&childev, childcb, SIGCHLD);	1084	ev_signal_init (&childev, childcb, SIGCHLD);
896	ev_set_priority (&childev, EV_MAXPRI);	1085	ev_set_priority (&childev, EV_MAXPRI);
897	ev_signal_start (EV_A_ &childev);	1086	ev_signal_start (EV_A_ &childev);
898	ev_unref (EV_A); /* child watcher should not keep loop alive */	1087	ev_unref (EV_A); /* child watcher should not keep loop alive */
899	#endif	1088	#endif
900	}	1089	}
901	else	1090	else
902	default_loop = 0;	1091	ev_default_loop_ptr = 0;
903	}	1092	}
904		1093
905	return default_loop;	1094	return ev_default_loop_ptr;
906	}	1095	}
907		1096
908	void	1097	void
909	ev_default_destroy (void)	1098	ev_default_destroy (void)
910	{	1099	{
911	#if EV_MULTIPLICITY	1100	#if EV_MULTIPLICITY
912	struct ev_loop *loop = default_loop;	1101	struct ev_loop *loop = ev_default_loop_ptr;
913	#endif	1102	#endif
914		1103
915	#ifndef WIN32	1104	#ifndef _WIN32
916	ev_ref (EV_A); /* child watcher */	1105	ev_ref (EV_A); /* child watcher */
917	ev_signal_stop (EV_A_ &childev);	1106	ev_signal_stop (EV_A_ &childev);
918	#endif	1107	#endif
919		1108
920	ev_ref (EV_A); /* signal watcher */	1109	ev_ref (EV_A); /* signal watcher */
…		…
928		1117
929	void	1118	void
930	ev_default_fork (void)	1119	ev_default_fork (void)
931	{	1120	{
932	#if EV_MULTIPLICITY	1121	#if EV_MULTIPLICITY
933	struct ev_loop *loop = default_loop;	1122	struct ev_loop *loop = ev_default_loop_ptr;
934	#endif	1123	#endif
935		1124
936	if (method)	1125	if (backend)
937	postfork = 1;	1126	postfork = 1;
938	}	1127	}
939		1128
940	/*****************************************************************************/	1129	/*****************************************************************************/
941		1130
942	static int	1131	int inline_size
943	any_pending (EV_P)	1132	any_pending (EV_P)
944	{	1133	{
945	int pri;	1134	int pri;
946		1135
947	for (pri = NUMPRI; pri--; )	1136	for (pri = NUMPRI; pri--; )
…		…
949	return 1;	1138	return 1;
950		1139
951	return 0;	1140	return 0;
952	}	1141	}
953		1142
954	static void	1143	void inline_speed
955	call_pending (EV_P)	1144	call_pending (EV_P)
956	{	1145	{
957	int pri;	1146	int pri;
958		1147
959	for (pri = NUMPRI; pri--; )	1148	for (pri = NUMPRI; pri--; )
960	while (pendingcnt [pri])	1149	while (pendingcnt [pri])
961	{	1150	{
962	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1151	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
963		1152
964	if (p->w)	1153	if (expect_true (p->w))
965	{	1154	{
		1155	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1156
966	p->w->pending = 0;	1157	p->w->pending = 0;
967	EV_CB_INVOKE (p->w, p->events);	1158	EV_CB_INVOKE (p->w, p->events);
968	}	1159	}
969	}	1160	}
970	}	1161	}
971		1162
972	static void	1163	void inline_size
973	timers_reify (EV_P)	1164	timers_reify (EV_P)
974	{	1165	{
975	while (timercnt && ((WT)timers [0])->at <= mn_now)	1166	while (timercnt && ((WT)timers [0])->at <= mn_now)
976	{	1167	{
977	struct ev_timer *w = timers [0];	1168	ev_timer *w = timers [0];
978		1169
979	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1170	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
980		1171
981	/* first reschedule or stop timer */	1172	/* first reschedule or stop timer */
982	if (w->repeat)	1173	if (w->repeat)
983	{	1174	{
984	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1175	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1176
985	((WT)w)->at = mn_now + w->repeat;	1177	((WT)w)->at += w->repeat;
		1178	if (((WT)w)->at < mn_now)
		1179	((WT)w)->at = mn_now;
		1180
986	downheap ((WT *)timers, timercnt, 0);	1181	downheap ((WT *)timers, timercnt, 0);
987	}	1182	}
988	else	1183	else
989	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1184	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
990		1185
991	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1186	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
992	}	1187	}
993	}	1188	}
994		1189
995	static void	1190	#if EV_PERIODIC_ENABLE
		1191	void inline_size
996	periodics_reify (EV_P)	1192	periodics_reify (EV_P)
997	{	1193	{
998	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1194	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
999	{	1195	{
1000	struct ev_periodic *w = periodics [0];	1196	ev_periodic *w = periodics [0];
1001		1197
1002	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1198	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1003		1199
1004	/* first reschedule or stop timer */	1200	/* first reschedule or stop timer */
1005	if (w->reschedule_cb)	1201	if (w->reschedule_cb)
1006	{	1202	{
1007	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1203	((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));	1204	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1010	downheap ((WT *)periodics, periodiccnt, 0);	1205	downheap ((WT *)periodics, periodiccnt, 0);
1011	}	1206	}
1012	else if (w->interval)	1207	else if (w->interval)
1013	{	1208	{
…		…
1020		1215
1021	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1216	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1022	}	1217	}
1023	}	1218	}
1024		1219
1025	static void	1220	static void noinline
1026	periodics_reschedule (EV_P)	1221	periodics_reschedule (EV_P)
1027	{	1222	{
1028	int i;	1223	int i;
1029		1224
1030	/* adjust periodics after time jump */	1225	/* adjust periodics after time jump */
1031	for (i = 0; i < periodiccnt; ++i)	1226	for (i = 0; i < periodiccnt; ++i)
1032	{	1227	{
1033	struct ev_periodic *w = periodics [i];	1228	ev_periodic *w = periodics [i];
1034		1229
1035	if (w->reschedule_cb)	1230	if (w->reschedule_cb)
1036	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1231	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1037	else if (w->interval)	1232	else if (w->interval)
1038	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1233	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
…		…
1040		1235
1041	/* now rebuild the heap */	1236	/* now rebuild the heap */
1042	for (i = periodiccnt >> 1; i--; )	1237	for (i = periodiccnt >> 1; i--; )
1043	downheap ((WT *)periodics, periodiccnt, i);	1238	downheap ((WT *)periodics, periodiccnt, i);
1044	}	1239	}
		1240	#endif
1045		1241
1046	inline int	1242	int inline_size
1047	time_update_monotonic (EV_P)	1243	time_update_monotonic (EV_P)
1048	{	1244	{
1049	mn_now = get_clock ();	1245	mn_now = get_clock ();
1050		1246
1051	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1247	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
…		…
1059	ev_rt_now = ev_time ();	1255	ev_rt_now = ev_time ();
1060	return 1;	1256	return 1;
1061	}	1257	}
1062	}	1258	}
1063		1259
1064	static void	1260	void inline_size
1065	time_update (EV_P)	1261	time_update (EV_P)
1066	{	1262	{
1067	int i;	1263	int i;
1068		1264
1069	#if EV_USE_MONOTONIC	1265	#if EV_USE_MONOTONIC
…		…
1071	{	1267	{
1072	if (time_update_monotonic (EV_A))	1268	if (time_update_monotonic (EV_A))
1073	{	1269	{
1074	ev_tstamp odiff = rtmn_diff;	1270	ev_tstamp odiff = rtmn_diff;
1075		1271
1076	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1272	/* loop a few times, before making important decisions.
		1273	* on the choice of "4": one iteration isn't enough,
		1274	* in case we get preempted during the calls to
		1275	* ev_time and get_clock. a second call is almost guarenteed
		1276	* to succeed in that case, though. and looping a few more times
		1277	* doesn't hurt either as we only do this on time-jumps or
		1278	* in the unlikely event of getting preempted here.
		1279	*/
		1280	for (i = 4; --i; )
1077	{	1281	{
1078	rtmn_diff = ev_rt_now - mn_now;	1282	rtmn_diff = ev_rt_now - mn_now;
1079		1283
1080	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1284	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1081	return; /* all is well */	1285	return; /* all is well */
…		…
1083	ev_rt_now = ev_time ();	1287	ev_rt_now = ev_time ();
1084	mn_now = get_clock ();	1288	mn_now = get_clock ();
1085	now_floor = mn_now;	1289	now_floor = mn_now;
1086	}	1290	}
1087		1291
		1292	# if EV_PERIODIC_ENABLE
1088	periodics_reschedule (EV_A);	1293	periodics_reschedule (EV_A);
		1294	# endif
1089	/* no timer adjustment, as the monotonic clock doesn't jump */	1295	/* no timer adjustment, as the monotonic clock doesn't jump */
1090	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1296	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1091	}	1297	}
1092	}	1298	}
1093	else	1299	else
…		…
1095	{	1301	{
1096	ev_rt_now = ev_time ();	1302	ev_rt_now = ev_time ();
1097		1303
1098	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1304	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1099	{	1305	{
		1306	#if EV_PERIODIC_ENABLE
1100	periodics_reschedule (EV_A);	1307	periodics_reschedule (EV_A);
		1308	#endif
1101		1309
1102	/* adjust timers. this is easy, as the offset is the same for all */	1310	/* adjust timers. this is easy, as the offset is the same for all */
1103	for (i = 0; i < timercnt; ++i)	1311	for (i = 0; i < timercnt; ++i)
1104	((WT)timers [i])->at += ev_rt_now - mn_now;	1312	((WT)timers [i])->at += ev_rt_now - mn_now;
1105	}	1313	}
…		…
1123	static int loop_done;	1331	static int loop_done;
1124		1332
1125	void	1333	void
1126	ev_loop (EV_P_ int flags)	1334	ev_loop (EV_P_ int flags)
1127	{	1335	{
1128	double block;
1129	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1336	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1337	? EVUNLOOP_ONE
		1338	: EVUNLOOP_CANCEL;
1130		1339
1131	do	1340	while (activecnt)
1132	{	1341	{
		1342	/* we might have forked, so reify kernel state if necessary */
		1343	#if EV_FORK_ENABLE
		1344	if (expect_false (postfork))
		1345	if (forkcnt)
		1346	{
		1347	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1348	call_pending (EV_A);
		1349	}
		1350	#endif
		1351
1133	/* queue check watchers (and execute them) */	1352	/* queue check watchers (and execute them) */
1134	if (expect_false (preparecnt))	1353	if (expect_false (preparecnt))
1135	{	1354	{
1136	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1355	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1137	call_pending (EV_A);	1356	call_pending (EV_A);
…		…
1143		1362
1144	/* update fd-related kernel structures */	1363	/* update fd-related kernel structures */
1145	fd_reify (EV_A);	1364	fd_reify (EV_A);
1146		1365
1147	/* calculate blocking time */	1366	/* calculate blocking time */
		1367	{
		1368	double block;
1148		1369
1149	/* we only need this for !monotonic clock or timers, but as we basically	1370	if (flags & EVLOOP_NONBLOCK || idlecnt)
1150	always have timers, we just calculate it always */	1371	block = 0.; /* do not block at all */
		1372	else
		1373	{
		1374	/* update time to cancel out callback processing overhead */
1151	#if EV_USE_MONOTONIC	1375	#if EV_USE_MONOTONIC
1152	if (expect_true (have_monotonic))	1376	if (expect_true (have_monotonic))
1153	time_update_monotonic (EV_A);	1377	time_update_monotonic (EV_A);
1154	else	1378	else
1155	#endif	1379	#endif
1156	{	1380	{
1157	ev_rt_now = ev_time ();	1381	ev_rt_now = ev_time ();
1158	mn_now = ev_rt_now;	1382	mn_now = ev_rt_now;
1159	}	1383	}
1160		1384
1161	if (flags & EVLOOP_NONBLOCK || idlecnt)
1162	block = 0.;
1163	else
1164	{
1165	block = MAX_BLOCKTIME;	1385	block = MAX_BLOCKTIME;
1166		1386
1167	if (timercnt)	1387	if (timercnt)
1168	{	1388	{
1169	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1389	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1170	if (block > to) block = to;	1390	if (block > to) block = to;
1171	}	1391	}
1172		1392
		1393	#if EV_PERIODIC_ENABLE
1173	if (periodiccnt)	1394	if (periodiccnt)
1174	{	1395	{
1175	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1396	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1176	if (block > to) block = to;	1397	if (block > to) block = to;
1177	}	1398	}
		1399	#endif
1178		1400
1179	if (block < 0.) block = 0.;	1401	if (expect_false (block < 0.)) block = 0.;
1180	}	1402	}
1181		1403
1182	method_poll (EV_A_ block);	1404	backend_poll (EV_A_ block);
		1405	}
1183		1406
1184	/* update ev_rt_now, do magic */	1407	/* update ev_rt_now, do magic */
1185	time_update (EV_A);	1408	time_update (EV_A);
1186		1409
1187	/* queue pending timers and reschedule them */	1410	/* queue pending timers and reschedule them */
1188	timers_reify (EV_A); /* relative timers called last */	1411	timers_reify (EV_A); /* relative timers called last */
		1412	#if EV_PERIODIC_ENABLE
1189	periodics_reify (EV_A); /* absolute timers called first */	1413	periodics_reify (EV_A); /* absolute timers called first */
		1414	#endif
1190		1415
1191	/* queue idle watchers unless io or timers are pending */	1416	/* queue idle watchers unless other events are pending */
1192	if (idlecnt && !any_pending (EV_A))	1417	if (idlecnt && !any_pending (EV_A))
1193	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1418	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1194		1419
1195	/* queue check watchers, to be executed first */	1420	/* queue check watchers, to be executed first */
1196	if (checkcnt)	1421	if (expect_false (checkcnt))
1197	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1422	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1198		1423
1199	call_pending (EV_A);	1424	call_pending (EV_A);
1200	}
1201	while (activecnt && !loop_done);
1202		1425
1203	if (loop_done != 2)	1426	if (expect_false (loop_done))
1204	loop_done = 0;	1427	break;
		1428	}
		1429
		1430	if (loop_done == EVUNLOOP_ONE)
		1431	loop_done = EVUNLOOP_CANCEL;
1205	}	1432	}
1206		1433
1207	void	1434	void
1208	ev_unloop (EV_P_ int how)	1435	ev_unloop (EV_P_ int how)
1209	{	1436	{
1210	loop_done = how;	1437	loop_done = how;
1211	}	1438	}
1212		1439
1213	/*****************************************************************************/	1440	/*****************************************************************************/
1214		1441
1215	inline void	1442	void inline_size
1216	wlist_add (WL *head, WL elem)	1443	wlist_add (WL *head, WL elem)
1217	{	1444	{
1218	elem->next = *head;	1445	elem->next = *head;
1219	*head = elem;	1446	*head = elem;
1220	}	1447	}
1221		1448
1222	inline void	1449	void inline_size
1223	wlist_del (WL *head, WL elem)	1450	wlist_del (WL *head, WL elem)
1224	{	1451	{
1225	while (*head)	1452	while (*head)
1226	{	1453	{
1227	if (*head == elem)	1454	if (*head == elem)
…		…
1232		1459
1233	head = &(*head)->next;	1460	head = &(*head)->next;
1234	}	1461	}
1235	}	1462	}
1236		1463
1237	inline void	1464	void inline_speed
1238	ev_clear_pending (EV_P_ W w)	1465	ev_clear_pending (EV_P_ W w)
1239	{	1466	{
1240	if (w->pending)	1467	if (w->pending)
1241	{	1468	{
1242	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1469	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1243	w->pending = 0;	1470	w->pending = 0;
1244	}	1471	}
1245	}	1472	}
1246		1473
1247	inline void	1474	void inline_speed
1248	ev_start (EV_P_ W w, int active)	1475	ev_start (EV_P_ W w, int active)
1249	{	1476	{
1250	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1477	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1251	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1478	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1252		1479
1253	w->active = active;	1480	w->active = active;
1254	ev_ref (EV_A);	1481	ev_ref (EV_A);
1255	}	1482	}
1256		1483
1257	inline void	1484	void inline_size
1258	ev_stop (EV_P_ W w)	1485	ev_stop (EV_P_ W w)
1259	{	1486	{
1260	ev_unref (EV_A);	1487	ev_unref (EV_A);
1261	w->active = 0;	1488	w->active = 0;
1262	}	1489	}
1263		1490
1264	/*****************************************************************************/	1491	/*****************************************************************************/
1265		1492
1266	void	1493	void
1267	ev_io_start (EV_P_ struct ev_io *w)	1494	ev_io_start (EV_P_ ev_io *w)
1268	{	1495	{
1269	int fd = w->fd;	1496	int fd = w->fd;
1270		1497
1271	if (ev_is_active (w))	1498	if (expect_false (ev_is_active (w)))
1272	return;	1499	return;
1273		1500
1274	assert (("ev_io_start called with negative fd", fd >= 0));	1501	assert (("ev_io_start called with negative fd", fd >= 0));
1275		1502
1276	ev_start (EV_A_ (W)w, 1);	1503	ev_start (EV_A_ (W)w, 1);
…		…
1279		1506
1280	fd_change (EV_A_ fd);	1507	fd_change (EV_A_ fd);
1281	}	1508	}
1282		1509
1283	void	1510	void
1284	ev_io_stop (EV_P_ struct ev_io *w)	1511	ev_io_stop (EV_P_ ev_io *w)
1285	{	1512	{
1286	ev_clear_pending (EV_A_ (W)w);	1513	ev_clear_pending (EV_A_ (W)w);
1287	if (!ev_is_active (w))	1514	if (expect_false (!ev_is_active (w)))
1288	return;	1515	return;
		1516
		1517	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1289		1518
1290	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1519	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1291	ev_stop (EV_A_ (W)w);	1520	ev_stop (EV_A_ (W)w);
1292		1521
1293	fd_change (EV_A_ w->fd);	1522	fd_change (EV_A_ w->fd);
1294	}	1523	}
1295		1524
1296	void	1525	void
1297	ev_timer_start (EV_P_ struct ev_timer *w)	1526	ev_timer_start (EV_P_ ev_timer *w)
1298	{	1527	{
1299	if (ev_is_active (w))	1528	if (expect_false (ev_is_active (w)))
1300	return;	1529	return;
1301		1530
1302	((WT)w)->at += mn_now;	1531	((WT)w)->at += mn_now;
1303		1532
1304	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1533	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1305		1534
1306	ev_start (EV_A_ (W)w, ++timercnt);	1535	ev_start (EV_A_ (W)w, ++timercnt);
1307	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1536	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1308	timers [timercnt - 1] = w;	1537	timers [timercnt - 1] = w;
1309	upheap ((WT *)timers, timercnt - 1);	1538	upheap ((WT *)timers, timercnt - 1);
1310		1539
		1540	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1541	}
		1542
		1543	void
		1544	ev_timer_stop (EV_P_ ev_timer *w)
		1545	{
		1546	ev_clear_pending (EV_A_ (W)w);
		1547	if (expect_false (!ev_is_active (w)))
		1548	return;
		1549
1311	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1550	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1312	}
1313		1551
1314	void	1552	{
1315	ev_timer_stop (EV_P_ struct ev_timer *w)	1553	int active = ((W)w)->active;
1316	{
1317	ev_clear_pending (EV_A_ (W)w);
1318	if (!ev_is_active (w))
1319	return;
1320		1554
1321	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1555	if (expect_true (--active < --timercnt))
1322
1323	if (((W)w)->active < timercnt--)
1324	{	1556	{
1325	timers [((W)w)->active - 1] = timers [timercnt];	1557	timers [active] = timers [timercnt];
1326	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1558	adjustheap ((WT *)timers, timercnt, active);
1327	}	1559	}
		1560	}
1328		1561
1329	((WT)w)->at = w->repeat;	1562	((WT)w)->at -= mn_now;
1330		1563
1331	ev_stop (EV_A_ (W)w);	1564	ev_stop (EV_A_ (W)w);
1332	}	1565	}
1333		1566
1334	void	1567	void
1335	ev_timer_again (EV_P_ struct ev_timer *w)	1568	ev_timer_again (EV_P_ ev_timer *w)
1336	{	1569	{
1337	if (ev_is_active (w))	1570	if (ev_is_active (w))
1338	{	1571	{
1339	if (w->repeat)	1572	if (w->repeat)
		1573	{
		1574	((WT)w)->at = mn_now + w->repeat;
1340	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1575	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
		1576	}
1341	else	1577	else
1342	ev_timer_stop (EV_A_ w);	1578	ev_timer_stop (EV_A_ w);
1343	}	1579	}
1344	else if (w->repeat)	1580	else if (w->repeat)
		1581	{
		1582	w->at = w->repeat;
1345	ev_timer_start (EV_A_ w);	1583	ev_timer_start (EV_A_ w);
		1584	}
1346	}	1585	}
1347		1586
		1587	#if EV_PERIODIC_ENABLE
1348	void	1588	void
1349	ev_periodic_start (EV_P_ struct ev_periodic *w)	1589	ev_periodic_start (EV_P_ ev_periodic *w)
1350	{	1590	{
1351	if (ev_is_active (w))	1591	if (expect_false (ev_is_active (w)))
1352	return;	1592	return;
1353		1593
1354	if (w->reschedule_cb)	1594	if (w->reschedule_cb)
1355	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1595	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1356	else if (w->interval)	1596	else if (w->interval)
…		…
1359	/* this formula differs from the one in periodic_reify because we do not always round up */	1599	/* 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;	1600	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1361	}	1601	}
1362		1602
1363	ev_start (EV_A_ (W)w, ++periodiccnt);	1603	ev_start (EV_A_ (W)w, ++periodiccnt);
1364	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1604	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1365	periodics [periodiccnt - 1] = w;	1605	periodics [periodiccnt - 1] = w;
1366	upheap ((WT *)periodics, periodiccnt - 1);	1606	upheap ((WT *)periodics, periodiccnt - 1);
1367		1607
		1608	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1609	}
		1610
		1611	void
		1612	ev_periodic_stop (EV_P_ ev_periodic *w)
		1613	{
		1614	ev_clear_pending (EV_A_ (W)w);
		1615	if (expect_false (!ev_is_active (w)))
		1616	return;
		1617
1368	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1618	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1369	}
1370		1619
1371	void	1620	{
1372	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1621	int active = ((W)w)->active;
1373	{
1374	ev_clear_pending (EV_A_ (W)w);
1375	if (!ev_is_active (w))
1376	return;
1377		1622
1378	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1623	if (expect_true (--active < --periodiccnt))
1379
1380	if (((W)w)->active < periodiccnt--)
1381	{	1624	{
1382	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1625	periodics [active] = periodics [periodiccnt];
1383	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1626	adjustheap ((WT *)periodics, periodiccnt, active);
1384	}	1627	}
		1628	}
1385		1629
1386	ev_stop (EV_A_ (W)w);	1630	ev_stop (EV_A_ (W)w);
1387	}	1631	}
1388		1632
1389	void	1633	void
1390	ev_periodic_again (EV_P_ struct ev_periodic *w)	1634	ev_periodic_again (EV_P_ ev_periodic *w)
1391	{	1635	{
1392	/* TODO: use adjustheap and recalculation */	1636	/* TODO: use adjustheap and recalculation */
1393	ev_periodic_stop (EV_A_ w);	1637	ev_periodic_stop (EV_A_ w);
1394	ev_periodic_start (EV_A_ w);	1638	ev_periodic_start (EV_A_ w);
1395	}	1639	}
1396		1640	#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		1641
1463	#ifndef SA_RESTART	1642	#ifndef SA_RESTART
1464	# define SA_RESTART 0	1643	# define SA_RESTART 0
1465	#endif	1644	#endif
1466		1645
1467	void	1646	void
1468	ev_signal_start (EV_P_ struct ev_signal *w)	1647	ev_signal_start (EV_P_ ev_signal *w)
1469	{	1648	{
1470	#if EV_MULTIPLICITY	1649	#if EV_MULTIPLICITY
1471	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1650	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1472	#endif	1651	#endif
1473	if (ev_is_active (w))	1652	if (expect_false (ev_is_active (w)))
1474	return;	1653	return;
1475		1654
1476	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1655	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1477		1656
1478	ev_start (EV_A_ (W)w, 1);	1657	ev_start (EV_A_ (W)w, 1);
1479	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1658	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1480	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1659	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1481		1660
1482	if (!((WL)w)->next)	1661	if (!((WL)w)->next)
1483	{	1662	{
1484	#if WIN32	1663	#if _WIN32
1485	signal (w->signum, sighandler);	1664	signal (w->signum, sighandler);
1486	#else	1665	#else
1487	struct sigaction sa;	1666	struct sigaction sa;
1488	sa.sa_handler = sighandler;	1667	sa.sa_handler = sighandler;
1489	sigfillset (&sa.sa_mask);	1668	sigfillset (&sa.sa_mask);
…		…
1492	#endif	1671	#endif
1493	}	1672	}
1494	}	1673	}
1495		1674
1496	void	1675	void
1497	ev_signal_stop (EV_P_ struct ev_signal *w)	1676	ev_signal_stop (EV_P_ ev_signal *w)
1498	{	1677	{
1499	ev_clear_pending (EV_A_ (W)w);	1678	ev_clear_pending (EV_A_ (W)w);
1500	if (!ev_is_active (w))	1679	if (expect_false (!ev_is_active (w)))
1501	return;	1680	return;
1502		1681
1503	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1682	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1504	ev_stop (EV_A_ (W)w);	1683	ev_stop (EV_A_ (W)w);
1505		1684
1506	if (!signals [w->signum - 1].head)	1685	if (!signals [w->signum - 1].head)
1507	signal (w->signum, SIG_DFL);	1686	signal (w->signum, SIG_DFL);
1508	}	1687	}
1509		1688
1510	void	1689	void
1511	ev_child_start (EV_P_ struct ev_child *w)	1690	ev_child_start (EV_P_ ev_child *w)
1512	{	1691	{
1513	#if EV_MULTIPLICITY	1692	#if EV_MULTIPLICITY
1514	assert (("child watchers are only supported in the default loop", loop == default_loop));	1693	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1515	#endif	1694	#endif
1516	if (ev_is_active (w))	1695	if (expect_false (ev_is_active (w)))
1517	return;	1696	return;
1518		1697
1519	ev_start (EV_A_ (W)w, 1);	1698	ev_start (EV_A_ (W)w, 1);
1520	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1699	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1521	}	1700	}
1522		1701
1523	void	1702	void
1524	ev_child_stop (EV_P_ struct ev_child *w)	1703	ev_child_stop (EV_P_ ev_child *w)
1525	{	1704	{
1526	ev_clear_pending (EV_A_ (W)w);	1705	ev_clear_pending (EV_A_ (W)w);
1527	if (ev_is_active (w))	1706	if (expect_false (!ev_is_active (w)))
1528	return;	1707	return;
1529		1708
1530	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1709	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1531	ev_stop (EV_A_ (W)w);	1710	ev_stop (EV_A_ (W)w);
1532	}	1711	}
1533		1712
		1713	#if EV_STAT_ENABLE
		1714
		1715	# ifdef _WIN32
		1716	# undef lstat
		1717	# define lstat(a,b) _stati64 (a,b)
		1718	# endif
		1719
		1720	#define DEF_STAT_INTERVAL 5.0074891
		1721	#define MIN_STAT_INTERVAL 0.1074891
		1722
		1723	void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1724
		1725	#if EV_USE_INOTIFY
		1726	# define EV_INOTIFY_BUFSIZE 8192
		1727
		1728	static void noinline
		1729	infy_add (EV_P_ ev_stat *w)
		1730	{
		1731	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);
		1732
		1733	if (w->wd < 0)
		1734	{
		1735	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1736
		1737	/* monitor some parent directory for speedup hints */
		1738	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1739	{
		1740	char path [4096];
		1741	strcpy (path, w->path);
		1742
		1743	do
		1744	{
		1745	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1746	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1747
		1748	char *pend = strrchr (path, '/');
		1749
		1750	if (!pend)
		1751	break; /* whoops, no '/', complain to your admin */
		1752
		1753	*pend = 0;
		1754	w->wd = inotify_add_watch (fs_fd, path, mask);
		1755	}
		1756	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1757	}
		1758	}
		1759	else
		1760	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1761
		1762	if (w->wd >= 0)
		1763	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1764	}
		1765
		1766	static void noinline
		1767	infy_del (EV_P_ ev_stat *w)
		1768	{
		1769	int slot;
		1770	int wd = w->wd;
		1771
		1772	if (wd < 0)
		1773	return;
		1774
		1775	w->wd = -2;
		1776	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1777	wlist_del (&fs_hash [slot].head, (WL)w);
		1778
		1779	/* remove this watcher, if others are watching it, they will rearm */
		1780	inotify_rm_watch (fs_fd, wd);
		1781	}
		1782
		1783	static void noinline
		1784	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1785	{
		1786	if (slot < 0)
		1787	/* overflow, need to check for all hahs slots */
		1788	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1789	infy_wd (EV_A_ slot, wd, ev);
		1790	else
		1791	{
		1792	WL w_;
		1793
		1794	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1795	{
		1796	ev_stat *w = (ev_stat *)w_;
		1797	w_ = w_->next; /* lets us remove this watcher and all before it */
		1798
		1799	if (w->wd == wd || wd == -1)
		1800	{
		1801	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1802	{
		1803	w->wd = -1;
		1804	infy_add (EV_A_ w); /* re-add, no matter what */
		1805	}
		1806
		1807	stat_timer_cb (EV_A_ &w->timer, 0);
		1808	}
		1809	}
		1810	}
		1811	}
		1812
		1813	static void
		1814	infy_cb (EV_P_ ev_io *w, int revents)
		1815	{
		1816	char buf [EV_INOTIFY_BUFSIZE];
		1817	struct inotify_event *ev = (struct inotify_event *)buf;
		1818	int ofs;
		1819	int len = read (fs_fd, buf, sizeof (buf));
		1820
		1821	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1822	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1823	}
		1824
		1825	void inline_size
		1826	infy_init (EV_P)
		1827	{
		1828	if (fs_fd != -2)
		1829	return;
		1830
		1831	fs_fd = inotify_init ();
		1832
		1833	if (fs_fd >= 0)
		1834	{
		1835	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1836	ev_set_priority (&fs_w, EV_MAXPRI);
		1837	ev_io_start (EV_A_ &fs_w);
		1838	}
		1839	}
		1840
		1841	void inline_size
		1842	infy_fork (EV_P)
		1843	{
		1844	int slot;
		1845
		1846	if (fs_fd < 0)
		1847	return;
		1848
		1849	close (fs_fd);
		1850	fs_fd = inotify_init ();
		1851
		1852	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1853	{
		1854	WL w_ = fs_hash [slot].head;
		1855	fs_hash [slot].head = 0;
		1856
		1857	while (w_)
		1858	{
		1859	ev_stat *w = (ev_stat *)w_;
		1860	w_ = w_->next; /* lets us add this watcher */
		1861
		1862	w->wd = -1;
		1863
		1864	if (fs_fd >= 0)
		1865	infy_add (EV_A_ w); /* re-add, no matter what */
		1866	else
		1867	ev_timer_start (EV_A_ &w->timer);
		1868	}
		1869
		1870	}
		1871	}
		1872
		1873	#endif
		1874
		1875	void
		1876	ev_stat_stat (EV_P_ ev_stat *w)
		1877	{
		1878	if (lstat (w->path, &w->attr) < 0)
		1879	w->attr.st_nlink = 0;
		1880	else if (!w->attr.st_nlink)
		1881	w->attr.st_nlink = 1;
		1882	}
		1883
		1884	void noinline
		1885	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1886	{
		1887	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1888
		1889	/* we copy this here each the time so that */
		1890	/* prev has the old value when the callback gets invoked */
		1891	w->prev = w->attr;
		1892	ev_stat_stat (EV_A_ w);
		1893
		1894	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1895	{
		1896	#if EV_USE_INOTIFY
		1897	infy_del (EV_A_ w);
		1898	infy_add (EV_A_ w);
		1899	ev_stat_stat (EV_A_ w); /* avoid race... */
		1900	#endif
		1901
		1902	ev_feed_event (EV_A_ w, EV_STAT);
		1903	}
		1904	}
		1905
		1906	void
		1907	ev_stat_start (EV_P_ ev_stat *w)
		1908	{
		1909	if (expect_false (ev_is_active (w)))
		1910	return;
		1911
		1912	/* since we use memcmp, we need to clear any padding data etc. */
		1913	memset (&w->prev, 0, sizeof (ev_statdata));
		1914	memset (&w->attr, 0, sizeof (ev_statdata));
		1915
		1916	ev_stat_stat (EV_A_ w);
		1917
		1918	if (w->interval < MIN_STAT_INTERVAL)
		1919	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1920
		1921	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1922	ev_set_priority (&w->timer, ev_priority (w));
		1923
		1924	#if EV_USE_INOTIFY
		1925	infy_init (EV_A);
		1926
		1927	if (fs_fd >= 0)
		1928	infy_add (EV_A_ w);
		1929	else
		1930	#endif
		1931	ev_timer_start (EV_A_ &w->timer);
		1932
		1933	ev_start (EV_A_ (W)w, 1);
		1934	}
		1935
		1936	void
		1937	ev_stat_stop (EV_P_ ev_stat *w)
		1938	{
		1939	ev_clear_pending (EV_A_ (W)w);
		1940	if (expect_false (!ev_is_active (w)))
		1941	return;
		1942
		1943	#if EV_USE_INOTIFY
		1944	infy_del (EV_A_ w);
		1945	#endif
		1946	ev_timer_stop (EV_A_ &w->timer);
		1947
		1948	ev_stop (EV_A_ (W)w);
		1949	}
		1950	#endif
		1951
		1952	void
		1953	ev_idle_start (EV_P_ ev_idle *w)
		1954	{
		1955	if (expect_false (ev_is_active (w)))
		1956	return;
		1957
		1958	ev_start (EV_A_ (W)w, ++idlecnt);
		1959	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1960	idles [idlecnt - 1] = w;
		1961	}
		1962
		1963	void
		1964	ev_idle_stop (EV_P_ ev_idle *w)
		1965	{
		1966	ev_clear_pending (EV_A_ (W)w);
		1967	if (expect_false (!ev_is_active (w)))
		1968	return;
		1969
		1970	{
		1971	int active = ((W)w)->active;
		1972	idles [active - 1] = idles [--idlecnt];
		1973	((W)idles [active - 1])->active = active;
		1974	}
		1975
		1976	ev_stop (EV_A_ (W)w);
		1977	}
		1978
		1979	void
		1980	ev_prepare_start (EV_P_ ev_prepare *w)
		1981	{
		1982	if (expect_false (ev_is_active (w)))
		1983	return;
		1984
		1985	ev_start (EV_A_ (W)w, ++preparecnt);
		1986	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1987	prepares [preparecnt - 1] = w;
		1988	}
		1989
		1990	void
		1991	ev_prepare_stop (EV_P_ ev_prepare *w)
		1992	{
		1993	ev_clear_pending (EV_A_ (W)w);
		1994	if (expect_false (!ev_is_active (w)))
		1995	return;
		1996
		1997	{
		1998	int active = ((W)w)->active;
		1999	prepares [active - 1] = prepares [--preparecnt];
		2000	((W)prepares [active - 1])->active = active;
		2001	}
		2002
		2003	ev_stop (EV_A_ (W)w);
		2004	}
		2005
		2006	void
		2007	ev_check_start (EV_P_ ev_check *w)
		2008	{
		2009	if (expect_false (ev_is_active (w)))
		2010	return;
		2011
		2012	ev_start (EV_A_ (W)w, ++checkcnt);
		2013	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2014	checks [checkcnt - 1] = w;
		2015	}
		2016
		2017	void
		2018	ev_check_stop (EV_P_ ev_check *w)
		2019	{
		2020	ev_clear_pending (EV_A_ (W)w);
		2021	if (expect_false (!ev_is_active (w)))
		2022	return;
		2023
		2024	{
		2025	int active = ((W)w)->active;
		2026	checks [active - 1] = checks [--checkcnt];
		2027	((W)checks [active - 1])->active = active;
		2028	}
		2029
		2030	ev_stop (EV_A_ (W)w);
		2031	}
		2032
		2033	#if EV_EMBED_ENABLE
		2034	void noinline
		2035	ev_embed_sweep (EV_P_ ev_embed *w)
		2036	{
		2037	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2038	}
		2039
		2040	static void
		2041	embed_cb (EV_P_ ev_io *io, int revents)
		2042	{
		2043	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2044
		2045	if (ev_cb (w))
		2046	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2047	else
		2048	ev_embed_sweep (loop, w);
		2049	}
		2050
		2051	void
		2052	ev_embed_start (EV_P_ ev_embed *w)
		2053	{
		2054	if (expect_false (ev_is_active (w)))
		2055	return;
		2056
		2057	{
		2058	struct ev_loop *loop = w->loop;
		2059	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2060	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2061	}
		2062
		2063	ev_set_priority (&w->io, ev_priority (w));
		2064	ev_io_start (EV_A_ &w->io);
		2065
		2066	ev_start (EV_A_ (W)w, 1);
		2067	}
		2068
		2069	void
		2070	ev_embed_stop (EV_P_ ev_embed *w)
		2071	{
		2072	ev_clear_pending (EV_A_ (W)w);
		2073	if (expect_false (!ev_is_active (w)))
		2074	return;
		2075
		2076	ev_io_stop (EV_A_ &w->io);
		2077
		2078	ev_stop (EV_A_ (W)w);
		2079	}
		2080	#endif
		2081
		2082	#if EV_FORK_ENABLE
		2083	void
		2084	ev_fork_start (EV_P_ ev_fork *w)
		2085	{
		2086	if (expect_false (ev_is_active (w)))
		2087	return;
		2088
		2089	ev_start (EV_A_ (W)w, ++forkcnt);
		2090	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2091	forks [forkcnt - 1] = w;
		2092	}
		2093
		2094	void
		2095	ev_fork_stop (EV_P_ ev_fork *w)
		2096	{
		2097	ev_clear_pending (EV_A_ (W)w);
		2098	if (expect_false (!ev_is_active (w)))
		2099	return;
		2100
		2101	{
		2102	int active = ((W)w)->active;
		2103	forks [active - 1] = forks [--forkcnt];
		2104	((W)forks [active - 1])->active = active;
		2105	}
		2106
		2107	ev_stop (EV_A_ (W)w);
		2108	}
		2109	#endif
		2110
1534	/*****************************************************************************/	2111	/*****************************************************************************/
1535		2112
1536	struct ev_once	2113	struct ev_once
1537	{	2114	{
1538	struct ev_io io;	2115	ev_io io;
1539	struct ev_timer to;	2116	ev_timer to;
1540	void (*cb)(int revents, void *arg);	2117	void (*cb)(int revents, void *arg);
1541	void *arg;	2118	void *arg;
1542	};	2119	};
1543		2120
1544	static void	2121	static void
…		…
1553		2130
1554	cb (revents, arg);	2131	cb (revents, arg);
1555	}	2132	}
1556		2133
1557	static void	2134	static void
1558	once_cb_io (EV_P_ struct ev_io *w, int revents)	2135	once_cb_io (EV_P_ ev_io *w, int revents)
1559	{	2136	{
1560	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2137	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1561	}	2138	}
1562		2139
1563	static void	2140	static void
1564	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2141	once_cb_to (EV_P_ ev_timer *w, int revents)
1565	{	2142	{
1566	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2143	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1567	}	2144	}
1568		2145
1569	void	2146	void
1570	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2147	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1571	{	2148	{
1572	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	2149	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1573		2150
1574	if (!once)	2151	if (expect_false (!once))
		2152	{
1575	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2153	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1576	else	2154	return;
1577	{	2155	}
		2156
1578	once->cb = cb;	2157	once->cb = cb;
1579	once->arg = arg;	2158	once->arg = arg;
1580		2159
1581	ev_init (&once->io, once_cb_io);	2160	ev_init (&once->io, once_cb_io);
1582	if (fd >= 0)	2161	if (fd >= 0)
1583	{	2162	{
1584	ev_io_set (&once->io, fd, events);	2163	ev_io_set (&once->io, fd, events);
1585	ev_io_start (EV_A_ &once->io);	2164	ev_io_start (EV_A_ &once->io);
1586	}	2165	}
1587		2166
1588	ev_init (&once->to, once_cb_to);	2167	ev_init (&once->to, once_cb_to);
1589	if (timeout >= 0.)	2168	if (timeout >= 0.)
1590	{	2169	{
1591	ev_timer_set (&once->to, timeout, 0.);	2170	ev_timer_set (&once->to, timeout, 0.);
1592	ev_timer_start (EV_A_ &once->to);	2171	ev_timer_start (EV_A_ &once->to);
1593	}
1594	}	2172	}
1595	}	2173	}
1596		2174
		2175	#ifdef __cplusplus
		2176	}
		2177	#endif
		2178

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