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Comparing libev/ev.c (file contents):
Revision 1.100 by root, Sun Nov 11 04:02:54 2007 UTC vs.
Revision 1.166 by root, Sat Dec 8 03:53:36 2007 UTC

…		…
32	#ifdef __cplusplus	32	#ifdef __cplusplus
33	extern "C" {	33	extern "C" {
34	#endif	34	#endif
35		35
36	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
37	# include "config.h"	40	# include "config.h"
		41	# endif
38		42
39	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
40	# ifndef EV_USE_MONOTONIC	44	# ifndef EV_USE_MONOTONIC
41	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
42	# endif	46	# endif
43	# ifndef EV_USE_REALTIME	47	# ifndef EV_USE_REALTIME
44	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
45	# endif	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
46	# endif	57	# endif
47		58
48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)	59	# ifndef EV_USE_SELECT
		60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
49	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
50	# endif	65	# endif
51		66
52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)	67	# ifndef EV_USE_POLL
		68	# if HAVE_POLL && HAVE_POLL_H
53	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
54	# endif	73	# endif
55		74
56	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)	75	# ifndef EV_USE_EPOLL
		76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
57	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
58	# endif	81	# endif
59		82
		83	# ifndef EV_USE_KQUEUE
60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
61	# 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
62	# endif	105	# endif
63		106
64	#endif	107	#endif
65		108
66	#include <math.h>	109	#include <math.h>
…		…
75	#include <sys/types.h>	118	#include <sys/types.h>
76	#include <time.h>	119	#include <time.h>
77		120
78	#include <signal.h>	121	#include <signal.h>
79		122
80	#ifndef WIN32
81	# include <unistd.h>
82	# include <sys/time.h>
83	# include <sys/wait.h>
84	#endif
85	/**/
86
87	#ifndef EV_USE_MONOTONIC
88	# define EV_USE_MONOTONIC 1
89	#endif
90
91	#ifndef EV_USE_SELECT
92	# define EV_USE_SELECT 1
93	#endif
94
95	#ifndef EV_USE_POLL
96	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
97	#endif
98
99	#ifndef EV_USE_EPOLL
100	# define EV_USE_EPOLL 0
101	#endif
102
103	#ifndef EV_USE_KQUEUE
104	# define EV_USE_KQUEUE 0
105	#endif
106
107	#ifndef EV_USE_WIN32
108	# ifdef WIN32
109	# define EV_USE_WIN32 0 /* it does not exist, use select */
110	# undef EV_USE_SELECT
111	# define EV_USE_SELECT 1
112	# else
113	# define EV_USE_WIN32 0
114	# endif
115	#endif
116
117	#ifndef EV_USE_REALTIME
118	# define EV_USE_REALTIME 1
119	#endif
120
121	/**/
122
123	#ifndef CLOCK_MONOTONIC
124	# undef EV_USE_MONOTONIC
125	# define EV_USE_MONOTONIC 0
126	#endif
127
128	#ifndef CLOCK_REALTIME
129	# undef EV_USE_REALTIME
130	# define EV_USE_REALTIME 0
131	#endif
132
133	/**/
134
135	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
136	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
137	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
138	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
139
140	#ifdef EV_H	123	#ifdef EV_H
141	# include EV_H	124	# include EV_H
142	#else	125	#else
143	# include "ev.h"	126	# include "ev.h"
144	#endif	127	#endif
145		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
146	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
147	# 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
148	# 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
149	#else	235	#else
150	# define expect(expr,value) (expr)	236	# define expect(expr,value) (expr)
		237	# define inline_speed static
151	# define inline static	238	# define inline_size static
		239	# define noinline
152	#endif	240	#endif
153		241
154	#define expect_false(expr) expect ((expr) != 0, 0)	242	#define expect_false(expr) expect ((expr) != 0, 0)
155	#define expect_true(expr) expect ((expr) != 0, 1)	243	#define expect_true(expr) expect ((expr) != 0, 1)
156		244
157	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
158	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	246	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
159		247
		248	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		249	#define EMPTY2(a,b) /* used to suppress some warnings */
		250
160	typedef struct ev_watcher *W;	251	typedef ev_watcher *W;
161	typedef struct ev_watcher_list *WL;	252	typedef ev_watcher_list *WL;
162	typedef struct ev_watcher_time *WT;	253	typedef ev_watcher_time *WT;
163		254
164	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
165		256
166	#ifdef WIN32	257	#ifdef _WIN32
167	# include "ev_win32.c"	258	# include "ev_win32.c"
168	#endif	259	#endif
169		260
170	/*****************************************************************************/	261	/*****************************************************************************/
171		262
172	static void (*syserr_cb)(const char *msg);	263	static void (*syserr_cb)(const char *msg);
173		264
		265	void
174	void ev_set_syserr_cb (void (*cb)(const char *msg))	266	ev_set_syserr_cb (void (*cb)(const char *msg))
175	{	267	{
176	syserr_cb = cb;	268	syserr_cb = cb;
177	}	269	}
178		270
179	static void	271	static void noinline
180	syserr (const char *msg)	272	syserr (const char *msg)
181	{	273	{
182	if (!msg)	274	if (!msg)
183	msg = "(libev) system error";	275	msg = "(libev) system error";
184		276
…		…
191	}	283	}
192	}	284	}
193		285
194	static void *(*alloc)(void *ptr, long size);	286	static void *(*alloc)(void *ptr, long size);
195		287
		288	void
196	void ev_set_allocator (void *(*cb)(void *ptr, long size))	289	ev_set_allocator (void *(*cb)(void *ptr, long size))
197	{	290	{
198	alloc = cb;	291	alloc = cb;
199	}	292	}
200		293
201	static void *	294	inline_speed void *
202	ev_realloc (void *ptr, long size)	295	ev_realloc (void *ptr, long size)
203	{	296	{
204	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	297	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
205		298
206	if (!ptr && size)	299	if (!ptr && size)
…		…
220	typedef struct	313	typedef struct
221	{	314	{
222	WL head;	315	WL head;
223	unsigned char events;	316	unsigned char events;
224	unsigned char reify;	317	unsigned char reify;
		318	#if EV_SELECT_IS_WINSOCKET
		319	SOCKET handle;
		320	#endif
225	} ANFD;	321	} ANFD;
226		322
227	typedef struct	323	typedef struct
228	{	324	{
229	W w;	325	W w;
230	int events;	326	int events;
231	} ANPENDING;	327	} ANPENDING;
		328
		329	#if EV_USE_INOTIFY
		330	typedef struct
		331	{
		332	WL head;
		333	} ANFS;
		334	#endif
232		335
233	#if EV_MULTIPLICITY	336	#if EV_MULTIPLICITY
234		337
235	struct ev_loop	338	struct ev_loop
236	{	339	{
…		…
240	#include "ev_vars.h"	343	#include "ev_vars.h"
241	#undef VAR	344	#undef VAR
242	};	345	};
243	#include "ev_wrap.h"	346	#include "ev_wrap.h"
244		347
245	struct ev_loop default_loop_struct;	348	static struct ev_loop default_loop_struct;
246	static struct ev_loop *default_loop;	349	struct ev_loop *ev_default_loop_ptr;
247		350
248	#else	351	#else
249		352
250	ev_tstamp ev_rt_now;	353	ev_tstamp ev_rt_now;
251	#define VAR(name,decl) static decl;	354	#define VAR(name,decl) static decl;
252	#include "ev_vars.h"	355	#include "ev_vars.h"
253	#undef VAR	356	#undef VAR
254		357
255	static int default_loop;	358	static int ev_default_loop_ptr;
256		359
257	#endif	360	#endif
258		361
259	/*****************************************************************************/	362	/*****************************************************************************/
260		363
…		…
270	gettimeofday (&tv, 0);	373	gettimeofday (&tv, 0);
271	return tv.tv_sec + tv.tv_usec * 1e-6;	374	return tv.tv_sec + tv.tv_usec * 1e-6;
272	#endif	375	#endif
273	}	376	}
274		377
275	inline ev_tstamp	378	ev_tstamp inline_size
276	get_clock (void)	379	get_clock (void)
277	{	380	{
278	#if EV_USE_MONOTONIC	381	#if EV_USE_MONOTONIC
279	if (expect_true (have_monotonic))	382	if (expect_true (have_monotonic))
280	{	383	{
…		…
293	{	396	{
294	return ev_rt_now;	397	return ev_rt_now;
295	}	398	}
296	#endif	399	#endif
297		400
298	#define array_roundsize(type,n) ((n) | 4 & ~3)	401	int inline_size
		402	array_nextsize (int elem, int cur, int cnt)
		403	{
		404	int ncur = cur + 1;
		405
		406	do
		407	ncur <<= 1;
		408	while (cnt > ncur);
		409
		410	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		411	if (elem * ncur > 4096)
		412	{
		413	ncur *= elem;
		414	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		415	ncur = ncur - sizeof (void *) * 4;
		416	ncur /= elem;
		417	}
		418
		419	return ncur;
		420	}
		421
		422	inline_speed void *
		423	array_realloc (int elem, void *base, int *cur, int cnt)
		424	{
		425	*cur = array_nextsize (elem, *cur, cnt);
		426	return ev_realloc (base, elem * *cur);
		427	}
299		428
300	#define array_needsize(type,base,cur,cnt,init) \	429	#define array_needsize(type,base,cur,cnt,init) \
301	if (expect_false ((cnt) > cur)) \	430	if (expect_false ((cnt) > (cur))) \
302	{ \	431	{ \
303	int newcnt = cur; \	432	int ocur_ = (cur); \
304	do \	433	(base) = (type *)array_realloc \
305	{ \	434	(sizeof (type), (base), &(cur), (cnt)); \
306	newcnt = array_roundsize (type, newcnt << 1); \	435	init ((base) + (ocur_), (cur) - ocur_); \
307	} \
308	while ((cnt) > newcnt); \
309	\
310	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
311	init (base + cur, newcnt - cur); \
312	cur = newcnt; \
313	}	436	}
314		437
		438	#if 0
315	#define array_slim(type,stem) \	439	#define array_slim(type,stem) \
316	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	440	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
317	{ \	441	{ \
318	stem ## max = array_roundsize (stem ## cnt >> 1); \	442	stem ## max = array_roundsize (stem ## cnt >> 1); \
319	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	443	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
320	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	444	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
321	}	445	}
322		446	#endif
323	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
324	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
325	#define array_free_microshit(stem) \
326	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
327		447
328	#define array_free(stem, idx) \	448	#define array_free(stem, idx) \
329	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	449	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
330		450
331	/*****************************************************************************/	451	/*****************************************************************************/
332		452
333	static void	453	void noinline
		454	ev_feed_event (EV_P_ void *w, int revents)
		455	{
		456	W w_ = (W)w;
		457
		458	if (expect_false (w_->pending))
		459	{
		460	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		461	return;
		462	}
		463
		464	w_->pending = ++pendingcnt [ABSPRI (w_)];
		465	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		466	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		467	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		468	}
		469
		470	void inline_size
		471	queue_events (EV_P_ W *events, int eventcnt, int type)
		472	{
		473	int i;
		474
		475	for (i = 0; i < eventcnt; ++i)
		476	ev_feed_event (EV_A_ events [i], type);
		477	}
		478
		479	/*****************************************************************************/
		480
		481	void inline_size
334	anfds_init (ANFD *base, int count)	482	anfds_init (ANFD *base, int count)
335	{	483	{
336	while (count--)	484	while (count--)
337	{	485	{
338	base->head = 0;	486	base->head = 0;
…		…
341		489
342	++base;	490	++base;
343	}	491	}
344	}	492	}
345		493
346	void	494	void inline_speed
347	ev_feed_event (EV_P_ void *w, int revents)
348	{
349	W w_ = (W)w;
350
351	if (w_->pending)
352	{
353	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
354	return;
355	}
356
357	w_->pending = ++pendingcnt [ABSPRI (w_)];
358	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
359	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
360	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
361	}
362
363	static void
364	queue_events (EV_P_ W *events, int eventcnt, int type)
365	{
366	int i;
367
368	for (i = 0; i < eventcnt; ++i)
369	ev_feed_event (EV_A_ events [i], type);
370	}
371
372	inline void
373	fd_event (EV_P_ int fd, int revents)	495	fd_event (EV_P_ int fd, int revents)
374	{	496	{
375	ANFD *anfd = anfds + fd;	497	ANFD *anfd = anfds + fd;
376	struct ev_io *w;	498	ev_io *w;
377		499
378	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	500	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
379	{	501	{
380	int ev = w->events & revents;	502	int ev = w->events & revents;
381		503
382	if (ev)	504	if (ev)
383	ev_feed_event (EV_A_ (W)w, ev);	505	ev_feed_event (EV_A_ (W)w, ev);
…		…
388	ev_feed_fd_event (EV_P_ int fd, int revents)	510	ev_feed_fd_event (EV_P_ int fd, int revents)
389	{	511	{
390	fd_event (EV_A_ fd, revents);	512	fd_event (EV_A_ fd, revents);
391	}	513	}
392		514
393	/*****************************************************************************/	515	void inline_size
394
395	static void
396	fd_reify (EV_P)	516	fd_reify (EV_P)
397	{	517	{
398	int i;	518	int i;
399		519
400	for (i = 0; i < fdchangecnt; ++i)	520	for (i = 0; i < fdchangecnt; ++i)
401	{	521	{
402	int fd = fdchanges [i];	522	int fd = fdchanges [i];
403	ANFD *anfd = anfds + fd;	523	ANFD *anfd = anfds + fd;
404	struct ev_io *w;	524	ev_io *w;
405		525
406	int events = 0;	526	int events = 0;
407		527
408	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	528	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
409	events |= w->events;	529	events |= w->events;
410		530
		531	#if EV_SELECT_IS_WINSOCKET
		532	if (events)
		533	{
		534	unsigned long argp;
		535	anfd->handle = _get_osfhandle (fd);
		536	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		537	}
		538	#endif
		539
411	anfd->reify = 0;	540	anfd->reify = 0;
412		541
413	method_modify (EV_A_ fd, anfd->events, events);	542	backend_modify (EV_A_ fd, anfd->events, events);
414	anfd->events = events;	543	anfd->events = events;
415	}	544	}
416		545
417	fdchangecnt = 0;	546	fdchangecnt = 0;
418	}	547	}
419		548
420	static void	549	void inline_size
421	fd_change (EV_P_ int fd)	550	fd_change (EV_P_ int fd)
422	{	551	{
423	if (anfds [fd].reify)	552	if (expect_false (anfds [fd].reify))
424	return;	553	return;
425		554
426	anfds [fd].reify = 1;	555	anfds [fd].reify = 1;
427		556
428	++fdchangecnt;	557	++fdchangecnt;
429	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	558	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
430	fdchanges [fdchangecnt - 1] = fd;	559	fdchanges [fdchangecnt - 1] = fd;
431	}	560	}
432		561
433	static void	562	void inline_speed
434	fd_kill (EV_P_ int fd)	563	fd_kill (EV_P_ int fd)
435	{	564	{
436	struct ev_io *w;	565	ev_io *w;
437		566
438	while ((w = (struct ev_io *)anfds [fd].head))	567	while ((w = (ev_io *)anfds [fd].head))
439	{	568	{
440	ev_io_stop (EV_A_ w);	569	ev_io_stop (EV_A_ w);
441	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	570	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
442	}	571	}
443	}	572	}
444		573
445	static int	574	int inline_size
446	fd_valid (int fd)	575	fd_valid (int fd)
447	{	576	{
448	#ifdef WIN32	577	#ifdef _WIN32
449	return !!win32_get_osfhandle (fd);	578	return _get_osfhandle (fd) != -1;
450	#else	579	#else
451	return fcntl (fd, F_GETFD) != -1;	580	return fcntl (fd, F_GETFD) != -1;
452	#endif	581	#endif
453	}	582	}
454		583
455	/* called on EBADF to verify fds */	584	/* called on EBADF to verify fds */
456	static void	585	static void noinline
457	fd_ebadf (EV_P)	586	fd_ebadf (EV_P)
458	{	587	{
459	int fd;	588	int fd;
460		589
461	for (fd = 0; fd < anfdmax; ++fd)	590	for (fd = 0; fd < anfdmax; ++fd)
…		…
463	if (!fd_valid (fd) == -1 && errno == EBADF)	592	if (!fd_valid (fd) == -1 && errno == EBADF)
464	fd_kill (EV_A_ fd);	593	fd_kill (EV_A_ fd);
465	}	594	}
466		595
467	/* called on ENOMEM in select/poll to kill some fds and retry */	596	/* called on ENOMEM in select/poll to kill some fds and retry */
468	static void	597	static void noinline
469	fd_enomem (EV_P)	598	fd_enomem (EV_P)
470	{	599	{
471	int fd;	600	int fd;
472		601
473	for (fd = anfdmax; fd--; )	602	for (fd = anfdmax; fd--; )
…		…
476	fd_kill (EV_A_ fd);	605	fd_kill (EV_A_ fd);
477	return;	606	return;
478	}	607	}
479	}	608	}
480		609
481	/* usually called after fork if method needs to re-arm all fds from scratch */	610	/* usually called after fork if backend needs to re-arm all fds from scratch */
482	static void	611	static void noinline
483	fd_rearm_all (EV_P)	612	fd_rearm_all (EV_P)
484	{	613	{
485	int fd;	614	int fd;
486		615
487	/* this should be highly optimised to not do anything but set a flag */
488	for (fd = 0; fd < anfdmax; ++fd)	616	for (fd = 0; fd < anfdmax; ++fd)
489	if (anfds [fd].events)	617	if (anfds [fd].events)
490	{	618	{
491	anfds [fd].events = 0;	619	anfds [fd].events = 0;
492	fd_change (EV_A_ fd);	620	fd_change (EV_A_ fd);
493	}	621	}
494	}	622	}
495		623
496	/*****************************************************************************/	624	/*****************************************************************************/
497		625
498	static void	626	void inline_speed
499	upheap (WT *heap, int k)	627	upheap (WT *heap, int k)
500	{	628	{
501	WT w = heap [k];	629	WT w = heap [k];
502		630
503	while (k && heap [k >> 1]->at > w->at)	631	while (k && heap [k >> 1]->at > w->at)
…		…
510	heap [k] = w;	638	heap [k] = w;
511	((W)heap [k])->active = k + 1;	639	((W)heap [k])->active = k + 1;
512		640
513	}	641	}
514		642
515	static void	643	void inline_speed
516	downheap (WT *heap, int N, int k)	644	downheap (WT *heap, int N, int k)
517	{	645	{
518	WT w = heap [k];	646	WT w = heap [k];
519		647
520	while (k < (N >> 1))	648	while (k < (N >> 1))
…		…
534		662
535	heap [k] = w;	663	heap [k] = w;
536	((W)heap [k])->active = k + 1;	664	((W)heap [k])->active = k + 1;
537	}	665	}
538		666
539	inline void	667	void inline_size
540	adjustheap (WT *heap, int N, int k)	668	adjustheap (WT *heap, int N, int k)
541	{	669	{
542	upheap (heap, k);	670	upheap (heap, k);
543	downheap (heap, N, k);	671	downheap (heap, N, k);
544	}	672	}
…		…
554	static ANSIG *signals;	682	static ANSIG *signals;
555	static int signalmax;	683	static int signalmax;
556		684
557	static int sigpipe [2];	685	static int sigpipe [2];
558	static sig_atomic_t volatile gotsig;	686	static sig_atomic_t volatile gotsig;
559	static struct ev_io sigev;	687	static ev_io sigev;
560		688
561	static void	689	void inline_size
562	signals_init (ANSIG *base, int count)	690	signals_init (ANSIG *base, int count)
563	{	691	{
564	while (count--)	692	while (count--)
565	{	693	{
566	base->head = 0;	694	base->head = 0;
…		…
571	}	699	}
572		700
573	static void	701	static void
574	sighandler (int signum)	702	sighandler (int signum)
575	{	703	{
576	#if WIN32	704	#if _WIN32
577	signal (signum, sighandler);	705	signal (signum, sighandler);
578	#endif	706	#endif
579		707
580	signals [signum - 1].gotsig = 1;	708	signals [signum - 1].gotsig = 1;
581		709
582	if (!gotsig)	710	if (!gotsig)
583	{	711	{
584	int old_errno = errno;	712	int old_errno = errno;
585	gotsig = 1;	713	gotsig = 1;
586	#ifdef WIN32
587	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
588	#else
589	write (sigpipe [1], &signum, 1);	714	write (sigpipe [1], &signum, 1);
590	#endif
591	errno = old_errno;	715	errno = old_errno;
592	}	716	}
593	}	717	}
594		718
595	void	719	void noinline
596	ev_feed_signal_event (EV_P_ int signum)	720	ev_feed_signal_event (EV_P_ int signum)
597	{	721	{
598	WL w;	722	WL w;
599		723
600	#if EV_MULTIPLICITY	724	#if EV_MULTIPLICITY
601	assert (("feeding signal events is only supported in the default loop", loop == default_loop));	725	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
602	#endif	726	#endif
603		727
604	--signum;	728	--signum;
605		729
606	if (signum < 0 || signum >= signalmax)	730	if (signum < 0 || signum >= signalmax)
…		…
611	for (w = signals [signum].head; w; w = w->next)	735	for (w = signals [signum].head; w; w = w->next)
612	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	736	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
613	}	737	}
614		738
615	static void	739	static void
616	sigcb (EV_P_ struct ev_io *iow, int revents)	740	sigcb (EV_P_ ev_io *iow, int revents)
617	{	741	{
618	int signum;	742	int signum;
619		743
620	#ifdef WIN32
621	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
622	#else
623	read (sigpipe [0], &revents, 1);	744	read (sigpipe [0], &revents, 1);
624	#endif
625	gotsig = 0;	745	gotsig = 0;
626		746
627	for (signum = signalmax; signum--; )	747	for (signum = signalmax; signum--; )
628	if (signals [signum].gotsig)	748	if (signals [signum].gotsig)
629	ev_feed_signal_event (EV_A_ signum + 1);	749	ev_feed_signal_event (EV_A_ signum + 1);
630	}	750	}
631		751
632	static void	752	void inline_size
		753	fd_intern (int fd)
		754	{
		755	#ifdef _WIN32
		756	int arg = 1;
		757	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		758	#else
		759	fcntl (fd, F_SETFD, FD_CLOEXEC);
		760	fcntl (fd, F_SETFL, O_NONBLOCK);
		761	#endif
		762	}
		763
		764	static void noinline
633	siginit (EV_P)	765	siginit (EV_P)
634	{	766	{
635	#ifndef WIN32	767	fd_intern (sigpipe [0]);
636	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	768	fd_intern (sigpipe [1]);
637	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
638
639	/* rather than sort out wether we really need nb, set it */
640	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
641	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
642	#endif
643		769
644	ev_io_set (&sigev, sigpipe [0], EV_READ);	770	ev_io_set (&sigev, sigpipe [0], EV_READ);
645	ev_io_start (EV_A_ &sigev);	771	ev_io_start (EV_A_ &sigev);
646	ev_unref (EV_A); /* child watcher should not keep loop alive */	772	ev_unref (EV_A); /* child watcher should not keep loop alive */
647	}	773	}
648		774
649	/*****************************************************************************/	775	/*****************************************************************************/
650		776
651	static struct ev_child *childs [PID_HASHSIZE];	777	static ev_child *childs [EV_PID_HASHSIZE];
652		778
653	#ifndef WIN32	779	#ifndef _WIN32
654		780
655	static struct ev_signal childev;	781	static ev_signal childev;
		782
		783	void inline_speed
		784	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		785	{
		786	ev_child *w;
		787
		788	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		789	if (w->pid == pid || !w->pid)
		790	{
		791	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		792	w->rpid = pid;
		793	w->rstatus = status;
		794	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		795	}
		796	}
656		797
657	#ifndef WCONTINUED	798	#ifndef WCONTINUED
658	# define WCONTINUED 0	799	# define WCONTINUED 0
659	#endif	800	#endif
660		801
661	static void	802	static void
662	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
663	{
664	struct ev_child *w;
665
666	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
667	if (w->pid == pid || !w->pid)
668	{
669	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
670	w->rpid = pid;
671	w->rstatus = status;
672	ev_feed_event (EV_A_ (W)w, EV_CHILD);
673	}
674	}
675
676	static void
677	childcb (EV_P_ struct ev_signal *sw, int revents)	803	childcb (EV_P_ ev_signal *sw, int revents)
678	{	804	{
679	int pid, status;	805	int pid, status;
680		806
		807	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
681	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	808	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
682	{	809	if (!WCONTINUED
		810	|| errno != EINVAL
		811	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		812	return;
		813
683	/* make sure we are called again until all childs have been reaped */	814	/* make sure we are called again until all childs have been reaped */
		815	/* we need to do it this way so that the callback gets called before we continue */
684	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	816	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
685		817
686	child_reap (EV_A_ sw, pid, pid, status);	818	child_reap (EV_A_ sw, pid, pid, status);
		819	if (EV_PID_HASHSIZE > 1)
687	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	820	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
688	}
689	}	821	}
690		822
691	#endif	823	#endif
692		824
693	/*****************************************************************************/	825	/*****************************************************************************/
694		826
		827	#if EV_USE_PORT
		828	# include "ev_port.c"
		829	#endif
695	#if EV_USE_KQUEUE	830	#if EV_USE_KQUEUE
696	# include "ev_kqueue.c"	831	# include "ev_kqueue.c"
697	#endif	832	#endif
698	#if EV_USE_EPOLL	833	#if EV_USE_EPOLL
699	# include "ev_epoll.c"	834	# include "ev_epoll.c"
…		…
716	{	851	{
717	return EV_VERSION_MINOR;	852	return EV_VERSION_MINOR;
718	}	853	}
719		854
720	/* return true if we are running with elevated privileges and should ignore env variables */	855	/* return true if we are running with elevated privileges and should ignore env variables */
721	static int	856	int inline_size
722	enable_secure (void)	857	enable_secure (void)
723	{	858	{
724	#ifdef WIN32	859	#ifdef _WIN32
725	return 0;	860	return 0;
726	#else	861	#else
727	return getuid () != geteuid ()	862	return getuid () != geteuid ()
728	|| getgid () != getegid ();	863	|| getgid () != getegid ();
729	#endif	864	#endif
730	}	865	}
731		866
732	int	867	unsigned int
733	ev_method (EV_P)	868	ev_supported_backends (void)
734	{	869	{
735	return method;	870	unsigned int flags = 0;
736	}
737		871
738	static void	872	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
739	loop_init (EV_P_ int methods)	873	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		874	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		875	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		876	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		877
		878	return flags;
		879	}
		880
		881	unsigned int
		882	ev_recommended_backends (void)
740	{	883	{
741	if (!method)	884	unsigned int flags = ev_supported_backends ();
		885
		886	#ifndef __NetBSD__
		887	/* kqueue is borked on everything but netbsd apparently */
		888	/* it usually doesn't work correctly on anything but sockets and pipes */
		889	flags &= ~EVBACKEND_KQUEUE;
		890	#endif
		891	#ifdef __APPLE__
		892	// flags &= ~EVBACKEND_KQUEUE; for documentation
		893	flags &= ~EVBACKEND_POLL;
		894	#endif
		895
		896	return flags;
		897	}
		898
		899	unsigned int
		900	ev_embeddable_backends (void)
		901	{
		902	return EVBACKEND_EPOLL
		903	| EVBACKEND_KQUEUE
		904	| EVBACKEND_PORT;
		905	}
		906
		907	unsigned int
		908	ev_backend (EV_P)
		909	{
		910	return backend;
		911	}
		912
		913	unsigned int
		914	ev_loop_count (EV_P)
		915	{
		916	return loop_count;
		917	}
		918
		919	static void noinline
		920	loop_init (EV_P_ unsigned int flags)
		921	{
		922	if (!backend)
742	{	923	{
743	#if EV_USE_MONOTONIC	924	#if EV_USE_MONOTONIC
744	{	925	{
745	struct timespec ts;	926	struct timespec ts;
746	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	927	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
751	ev_rt_now = ev_time ();	932	ev_rt_now = ev_time ();
752	mn_now = get_clock ();	933	mn_now = get_clock ();
753	now_floor = mn_now;	934	now_floor = mn_now;
754	rtmn_diff = ev_rt_now - mn_now;	935	rtmn_diff = ev_rt_now - mn_now;
755		936
756	if (methods == EVMETHOD_AUTO)	937	/* pid check not overridable via env */
757	if (!enable_secure () && getenv ("LIBEV_METHODS"))	938	#ifndef _WIN32
		939	if (flags & EVFLAG_FORKCHECK)
		940	curpid = getpid ();
		941	#endif
		942
		943	if (!(flags & EVFLAG_NOENV)
		944	&& !enable_secure ()
		945	&& getenv ("LIBEV_FLAGS"))
758	methods = atoi (getenv ("LIBEV_METHODS"));	946	flags = atoi (getenv ("LIBEV_FLAGS"));
759	else
760	methods = EVMETHOD_ANY;
761		947
762	method = 0;	948	if (!(flags & 0x0000ffffUL))
		949	flags |= ev_recommended_backends ();
		950
		951	backend = 0;
		952	backend_fd = -1;
763	#if EV_USE_WIN32	953	#if EV_USE_INOTIFY
764	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	954	fs_fd = -2;
		955	#endif
		956
		957	#if EV_USE_PORT
		958	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
765	#endif	959	#endif
766	#if EV_USE_KQUEUE	960	#if EV_USE_KQUEUE
767	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	961	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
768	#endif	962	#endif
769	#if EV_USE_EPOLL	963	#if EV_USE_EPOLL
770	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	964	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
771	#endif	965	#endif
772	#if EV_USE_POLL	966	#if EV_USE_POLL
773	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	967	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
774	#endif	968	#endif
775	#if EV_USE_SELECT	969	#if EV_USE_SELECT
776	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	970	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
777	#endif	971	#endif
778		972
779	ev_init (&sigev, sigcb);	973	ev_init (&sigev, sigcb);
780	ev_set_priority (&sigev, EV_MAXPRI);	974	ev_set_priority (&sigev, EV_MAXPRI);
781	}	975	}
782	}	976	}
783		977
784	void	978	static void noinline
785	loop_destroy (EV_P)	979	loop_destroy (EV_P)
786	{	980	{
787	int i;	981	int i;
788		982
789	#if EV_USE_WIN32	983	#if EV_USE_INOTIFY
790	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	984	if (fs_fd >= 0)
		985	close (fs_fd);
		986	#endif
		987
		988	if (backend_fd >= 0)
		989	close (backend_fd);
		990
		991	#if EV_USE_PORT
		992	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
791	#endif	993	#endif
792	#if EV_USE_KQUEUE	994	#if EV_USE_KQUEUE
793	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	995	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
794	#endif	996	#endif
795	#if EV_USE_EPOLL	997	#if EV_USE_EPOLL
796	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	998	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
797	#endif	999	#endif
798	#if EV_USE_POLL	1000	#if EV_USE_POLL
799	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1001	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
800	#endif	1002	#endif
801	#if EV_USE_SELECT	1003	#if EV_USE_SELECT
802	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1004	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
803	#endif	1005	#endif
804		1006
805	for (i = NUMPRI; i--; )	1007	for (i = NUMPRI; i--; )
		1008	{
806	array_free (pending, [i]);	1009	array_free (pending, [i]);
		1010	#if EV_IDLE_ENABLE
		1011	array_free (idle, [i]);
		1012	#endif
		1013	}
807		1014
808	/* have to use the microsoft-never-gets-it-right macro */	1015	/* have to use the microsoft-never-gets-it-right macro */
809	array_free_microshit (fdchange);	1016	array_free (fdchange, EMPTY);
810	array_free_microshit (timer);	1017	array_free (timer, EMPTY);
811	#if EV_PERIODICS	1018	#if EV_PERIODIC_ENABLE
812	array_free_microshit (periodic);	1019	array_free (periodic, EMPTY);
813	#endif	1020	#endif
814	array_free_microshit (idle);	1021	array_free (prepare, EMPTY);
815	array_free_microshit (prepare);	1022	array_free (check, EMPTY);
816	array_free_microshit (check);
817		1023
818	method = 0;	1024	backend = 0;
819	}	1025	}
820		1026
821	static void	1027	void inline_size infy_fork (EV_P);
		1028
		1029	void inline_size
822	loop_fork (EV_P)	1030	loop_fork (EV_P)
823	{	1031	{
		1032	#if EV_USE_PORT
		1033	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1034	#endif
		1035	#if EV_USE_KQUEUE
		1036	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1037	#endif
824	#if EV_USE_EPOLL	1038	#if EV_USE_EPOLL
825	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1039	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
826	#endif	1040	#endif
827	#if EV_USE_KQUEUE	1041	#if EV_USE_INOTIFY
828	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1042	infy_fork (EV_A);
829	#endif	1043	#endif
830		1044
831	if (ev_is_active (&sigev))	1045	if (ev_is_active (&sigev))
832	{	1046	{
833	/* default loop */	1047	/* default loop */
…		…
846	postfork = 0;	1060	postfork = 0;
847	}	1061	}
848		1062
849	#if EV_MULTIPLICITY	1063	#if EV_MULTIPLICITY
850	struct ev_loop *	1064	struct ev_loop *
851	ev_loop_new (int methods)	1065	ev_loop_new (unsigned int flags)
852	{	1066	{
853	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1067	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
854		1068
855	memset (loop, 0, sizeof (struct ev_loop));	1069	memset (loop, 0, sizeof (struct ev_loop));
856		1070
857	loop_init (EV_A_ methods);	1071	loop_init (EV_A_ flags);
858		1072
859	if (ev_method (EV_A))	1073	if (ev_backend (EV_A))
860	return loop;	1074	return loop;
861		1075
862	return 0;	1076	return 0;
863	}	1077	}
864		1078
…		…
877		1091
878	#endif	1092	#endif
879		1093
880	#if EV_MULTIPLICITY	1094	#if EV_MULTIPLICITY
881	struct ev_loop *	1095	struct ev_loop *
		1096	ev_default_loop_init (unsigned int flags)
882	#else	1097	#else
883	int	1098	int
		1099	ev_default_loop (unsigned int flags)
884	#endif	1100	#endif
885	ev_default_loop (int methods)
886	{	1101	{
887	if (sigpipe [0] == sigpipe [1])	1102	if (sigpipe [0] == sigpipe [1])
888	if (pipe (sigpipe))	1103	if (pipe (sigpipe))
889	return 0;	1104	return 0;
890		1105
891	if (!default_loop)	1106	if (!ev_default_loop_ptr)
892	{	1107	{
893	#if EV_MULTIPLICITY	1108	#if EV_MULTIPLICITY
894	struct ev_loop *loop = default_loop = &default_loop_struct;	1109	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
895	#else	1110	#else
896	default_loop = 1;	1111	ev_default_loop_ptr = 1;
897	#endif	1112	#endif
898		1113
899	loop_init (EV_A_ methods);	1114	loop_init (EV_A_ flags);
900		1115
901	if (ev_method (EV_A))	1116	if (ev_backend (EV_A))
902	{	1117	{
903	siginit (EV_A);	1118	siginit (EV_A);
904		1119
905	#ifndef WIN32	1120	#ifndef _WIN32
906	ev_signal_init (&childev, childcb, SIGCHLD);	1121	ev_signal_init (&childev, childcb, SIGCHLD);
907	ev_set_priority (&childev, EV_MAXPRI);	1122	ev_set_priority (&childev, EV_MAXPRI);
908	ev_signal_start (EV_A_ &childev);	1123	ev_signal_start (EV_A_ &childev);
909	ev_unref (EV_A); /* child watcher should not keep loop alive */	1124	ev_unref (EV_A); /* child watcher should not keep loop alive */
910	#endif	1125	#endif
911	}	1126	}
912	else	1127	else
913	default_loop = 0;	1128	ev_default_loop_ptr = 0;
914	}	1129	}
915		1130
916	return default_loop;	1131	return ev_default_loop_ptr;
917	}	1132	}
918		1133
919	void	1134	void
920	ev_default_destroy (void)	1135	ev_default_destroy (void)
921	{	1136	{
922	#if EV_MULTIPLICITY	1137	#if EV_MULTIPLICITY
923	struct ev_loop *loop = default_loop;	1138	struct ev_loop *loop = ev_default_loop_ptr;
924	#endif	1139	#endif
925		1140
926	#ifndef WIN32	1141	#ifndef _WIN32
927	ev_ref (EV_A); /* child watcher */	1142	ev_ref (EV_A); /* child watcher */
928	ev_signal_stop (EV_A_ &childev);	1143	ev_signal_stop (EV_A_ &childev);
929	#endif	1144	#endif
930		1145
931	ev_ref (EV_A); /* signal watcher */	1146	ev_ref (EV_A); /* signal watcher */
…		…
939		1154
940	void	1155	void
941	ev_default_fork (void)	1156	ev_default_fork (void)
942	{	1157	{
943	#if EV_MULTIPLICITY	1158	#if EV_MULTIPLICITY
944	struct ev_loop *loop = default_loop;	1159	struct ev_loop *loop = ev_default_loop_ptr;
945	#endif	1160	#endif
946		1161
947	if (method)	1162	if (backend)
948	postfork = 1;	1163	postfork = 1;
949	}	1164	}
950		1165
951	/*****************************************************************************/	1166	/*****************************************************************************/
952		1167
953	static int	1168	void inline_speed
954	any_pending (EV_P)
955	{
956	int pri;
957
958	for (pri = NUMPRI; pri--; )
959	if (pendingcnt [pri])
960	return 1;
961
962	return 0;
963	}
964
965	static void
966	call_pending (EV_P)	1169	call_pending (EV_P)
967	{	1170	{
968	int pri;	1171	int pri;
969		1172
970	for (pri = NUMPRI; pri--; )	1173	for (pri = NUMPRI; pri--; )
971	while (pendingcnt [pri])	1174	while (pendingcnt [pri])
972	{	1175	{
973	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1176	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
974		1177
975	if (p->w)	1178	if (expect_true (p->w))
976	{	1179	{
		1180	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1181
977	p->w->pending = 0;	1182	p->w->pending = 0;
978	EV_CB_INVOKE (p->w, p->events);	1183	EV_CB_INVOKE (p->w, p->events);
979	}	1184	}
980	}	1185	}
981	}	1186	}
982		1187
983	static void	1188	void inline_size
984	timers_reify (EV_P)	1189	timers_reify (EV_P)
985	{	1190	{
986	while (timercnt && ((WT)timers [0])->at <= mn_now)	1191	while (timercnt && ((WT)timers [0])->at <= mn_now)
987	{	1192	{
988	struct ev_timer *w = timers [0];	1193	ev_timer *w = timers [0];
989		1194
990	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1195	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
991		1196
992	/* first reschedule or stop timer */	1197	/* first reschedule or stop timer */
993	if (w->repeat)	1198	if (w->repeat)
994	{	1199	{
995	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1200	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
…		…
1005		1210
1006	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1211	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1007	}	1212	}
1008	}	1213	}
1009		1214
1010	#if EV_PERIODICS	1215	#if EV_PERIODIC_ENABLE
1011	static void	1216	void inline_size
1012	periodics_reify (EV_P)	1217	periodics_reify (EV_P)
1013	{	1218	{
1014	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1219	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1015	{	1220	{
1016	struct ev_periodic *w = periodics [0];	1221	ev_periodic *w = periodics [0];
1017		1222
1018	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1223	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1019		1224
1020	/* first reschedule or stop timer */	1225	/* first reschedule or stop timer */
1021	if (w->reschedule_cb)	1226	if (w->reschedule_cb)
1022	{	1227	{
1023	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1228	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1024
1025	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1229	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1026	downheap ((WT *)periodics, periodiccnt, 0);	1230	downheap ((WT *)periodics, periodiccnt, 0);
1027	}	1231	}
1028	else if (w->interval)	1232	else if (w->interval)
1029	{	1233	{
…		…
1036		1240
1037	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1241	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1038	}	1242	}
1039	}	1243	}
1040		1244
1041	static void	1245	static void noinline
1042	periodics_reschedule (EV_P)	1246	periodics_reschedule (EV_P)
1043	{	1247	{
1044	int i;	1248	int i;
1045		1249
1046	/* adjust periodics after time jump */	1250	/* adjust periodics after time jump */
1047	for (i = 0; i < periodiccnt; ++i)	1251	for (i = 0; i < periodiccnt; ++i)
1048	{	1252	{
1049	struct ev_periodic *w = periodics [i];	1253	ev_periodic *w = periodics [i];
1050		1254
1051	if (w->reschedule_cb)	1255	if (w->reschedule_cb)
1052	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1256	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1053	else if (w->interval)	1257	else if (w->interval)
1054	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1258	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
…		…
1058	for (i = periodiccnt >> 1; i--; )	1262	for (i = periodiccnt >> 1; i--; )
1059	downheap ((WT *)periodics, periodiccnt, i);	1263	downheap ((WT *)periodics, periodiccnt, i);
1060	}	1264	}
1061	#endif	1265	#endif
1062		1266
1063	inline int	1267	#if EV_IDLE_ENABLE
		1268	void inline_size
		1269	idle_reify (EV_P)
		1270	{
		1271	if (expect_false (idleall))
		1272	{
		1273	int pri;
		1274
		1275	for (pri = NUMPRI; pri--; )
		1276	{
		1277	if (pendingcnt [pri])
		1278	break;
		1279
		1280	if (idlecnt [pri])
		1281	{
		1282	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1283	break;
		1284	}
		1285	}
		1286	}
		1287	}
		1288	#endif
		1289
		1290	int inline_size
1064	time_update_monotonic (EV_P)	1291	time_update_monotonic (EV_P)
1065	{	1292	{
1066	mn_now = get_clock ();	1293	mn_now = get_clock ();
1067		1294
1068	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1295	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
…		…
1076	ev_rt_now = ev_time ();	1303	ev_rt_now = ev_time ();
1077	return 1;	1304	return 1;
1078	}	1305	}
1079	}	1306	}
1080		1307
1081	static void	1308	void inline_size
1082	time_update (EV_P)	1309	time_update (EV_P)
1083	{	1310	{
1084	int i;	1311	int i;
1085		1312
1086	#if EV_USE_MONOTONIC	1313	#if EV_USE_MONOTONIC
…		…
1088	{	1315	{
1089	if (time_update_monotonic (EV_A))	1316	if (time_update_monotonic (EV_A))
1090	{	1317	{
1091	ev_tstamp odiff = rtmn_diff;	1318	ev_tstamp odiff = rtmn_diff;
1092		1319
1093	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1320	/* loop a few times, before making important decisions.
		1321	* on the choice of "4": one iteration isn't enough,
		1322	* in case we get preempted during the calls to
		1323	* ev_time and get_clock. a second call is almost guaranteed
		1324	* to succeed in that case, though. and looping a few more times
		1325	* doesn't hurt either as we only do this on time-jumps or
		1326	* in the unlikely event of having been preempted here.
		1327	*/
		1328	for (i = 4; --i; )
1094	{	1329	{
1095	rtmn_diff = ev_rt_now - mn_now;	1330	rtmn_diff = ev_rt_now - mn_now;
1096		1331
1097	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1332	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1098	return; /* all is well */	1333	return; /* all is well */
…		…
1100	ev_rt_now = ev_time ();	1335	ev_rt_now = ev_time ();
1101	mn_now = get_clock ();	1336	mn_now = get_clock ();
1102	now_floor = mn_now;	1337	now_floor = mn_now;
1103	}	1338	}
1104		1339
1105	# if EV_PERIODICS	1340	# if EV_PERIODIC_ENABLE
1106	periodics_reschedule (EV_A);	1341	periodics_reschedule (EV_A);
1107	# endif	1342	# endif
1108	/* no timer adjustment, as the monotonic clock doesn't jump */	1343	/* no timer adjustment, as the monotonic clock doesn't jump */
1109	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1344	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1110	}	1345	}
…		…
1114	{	1349	{
1115	ev_rt_now = ev_time ();	1350	ev_rt_now = ev_time ();
1116		1351
1117	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1352	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1118	{	1353	{
1119	#if EV_PERIODICS	1354	#if EV_PERIODIC_ENABLE
1120	periodics_reschedule (EV_A);	1355	periodics_reschedule (EV_A);
1121	#endif	1356	#endif
1122		1357
1123	/* adjust timers. this is easy, as the offset is the same for all */	1358	/* adjust timers. this is easy, as the offset is the same for all of them */
1124	for (i = 0; i < timercnt; ++i)	1359	for (i = 0; i < timercnt; ++i)
1125	((WT)timers [i])->at += ev_rt_now - mn_now;	1360	((WT)timers [i])->at += ev_rt_now - mn_now;
1126	}	1361	}
1127		1362
1128	mn_now = ev_rt_now;	1363	mn_now = ev_rt_now;
…		…
1144	static int loop_done;	1379	static int loop_done;
1145		1380
1146	void	1381	void
1147	ev_loop (EV_P_ int flags)	1382	ev_loop (EV_P_ int flags)
1148	{	1383	{
1149	double block;
1150	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1384	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1385	? EVUNLOOP_ONE
		1386	: EVUNLOOP_CANCEL;
		1387
		1388	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1151		1389
1152	do	1390	do
1153	{	1391	{
		1392	#ifndef _WIN32
		1393	if (expect_false (curpid)) /* penalise the forking check even more */
		1394	if (expect_false (getpid () != curpid))
		1395	{
		1396	curpid = getpid ();
		1397	postfork = 1;
		1398	}
		1399	#endif
		1400
		1401	#if EV_FORK_ENABLE
		1402	/* we might have forked, so queue fork handlers */
		1403	if (expect_false (postfork))
		1404	if (forkcnt)
		1405	{
		1406	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1407	call_pending (EV_A);
		1408	}
		1409	#endif
		1410
1154	/* queue check watchers (and execute them) */	1411	/* queue check watchers (and execute them) */
1155	if (expect_false (preparecnt))	1412	if (expect_false (preparecnt))
1156	{	1413	{
1157	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1414	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1158	call_pending (EV_A);	1415	call_pending (EV_A);
1159	}	1416	}
1160		1417
		1418	if (expect_false (!activecnt))
		1419	break;
		1420
1161	/* we might have forked, so reify kernel state if necessary */	1421	/* we might have forked, so reify kernel state if necessary */
1162	if (expect_false (postfork))	1422	if (expect_false (postfork))
1163	loop_fork (EV_A);	1423	loop_fork (EV_A);
1164		1424
1165	/* update fd-related kernel structures */	1425	/* update fd-related kernel structures */
1166	fd_reify (EV_A);	1426	fd_reify (EV_A);
1167		1427
1168	/* calculate blocking time */	1428	/* calculate blocking time */
		1429	{
		1430	ev_tstamp block;
1169		1431
1170	/* we only need this for !monotonic clock or timers, but as we basically	1432	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1171	always have timers, we just calculate it always */	1433	block = 0.; /* do not block at all */
		1434	else
		1435	{
		1436	/* update time to cancel out callback processing overhead */
1172	#if EV_USE_MONOTONIC	1437	#if EV_USE_MONOTONIC
1173	if (expect_true (have_monotonic))	1438	if (expect_true (have_monotonic))
1174	time_update_monotonic (EV_A);	1439	time_update_monotonic (EV_A);
1175	else	1440	else
1176	#endif	1441	#endif
1177	{	1442	{
1178	ev_rt_now = ev_time ();	1443	ev_rt_now = ev_time ();
1179	mn_now = ev_rt_now;	1444	mn_now = ev_rt_now;
1180	}	1445	}
1181		1446
1182	if (flags & EVLOOP_NONBLOCK || idlecnt)
1183	block = 0.;
1184	else
1185	{
1186	block = MAX_BLOCKTIME;	1447	block = MAX_BLOCKTIME;
1187		1448
1188	if (timercnt)	1449	if (timercnt)
1189	{	1450	{
1190	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1451	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1191	if (block > to) block = to;	1452	if (block > to) block = to;
1192	}	1453	}
1193		1454
1194	#if EV_PERIODICS	1455	#if EV_PERIODIC_ENABLE
1195	if (periodiccnt)	1456	if (periodiccnt)
1196	{	1457	{
1197	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;	1458	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1198	if (block > to) block = to;	1459	if (block > to) block = to;
1199	}	1460	}
1200	#endif	1461	#endif
1201		1462
1202	if (block < 0.) block = 0.;	1463	if (expect_false (block < 0.)) block = 0.;
1203	}	1464	}
1204		1465
		1466	++loop_count;
1205	method_poll (EV_A_ block);	1467	backend_poll (EV_A_ block);
		1468	}
1206		1469
1207	/* update ev_rt_now, do magic */	1470	/* update ev_rt_now, do magic */
1208	time_update (EV_A);	1471	time_update (EV_A);
1209		1472
1210	/* queue pending timers and reschedule them */	1473	/* queue pending timers and reschedule them */
1211	timers_reify (EV_A); /* relative timers called last */	1474	timers_reify (EV_A); /* relative timers called last */
1212	#if EV_PERIODICS	1475	#if EV_PERIODIC_ENABLE
1213	periodics_reify (EV_A); /* absolute timers called first */	1476	periodics_reify (EV_A); /* absolute timers called first */
1214	#endif	1477	#endif
1215		1478
		1479	#if EV_IDLE_ENABLE
1216	/* queue idle watchers unless io or timers are pending */	1480	/* queue idle watchers unless other events are pending */
1217	if (idlecnt && !any_pending (EV_A))	1481	idle_reify (EV_A);
1218	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1482	#endif
1219		1483
1220	/* queue check watchers, to be executed first */	1484	/* queue check watchers, to be executed first */
1221	if (checkcnt)	1485	if (expect_false (checkcnt))
1222	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1486	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1223		1487
1224	call_pending (EV_A);	1488	call_pending (EV_A);
		1489
1225	}	1490	}
1226	while (activecnt && !loop_done);	1491	while (expect_true (activecnt && !loop_done));
1227		1492
1228	if (loop_done != 2)	1493	if (loop_done == EVUNLOOP_ONE)
1229	loop_done = 0;	1494	loop_done = EVUNLOOP_CANCEL;
1230	}	1495	}
1231		1496
1232	void	1497	void
1233	ev_unloop (EV_P_ int how)	1498	ev_unloop (EV_P_ int how)
1234	{	1499	{
1235	loop_done = how;	1500	loop_done = how;
1236	}	1501	}
1237		1502
1238	/*****************************************************************************/	1503	/*****************************************************************************/
1239		1504
1240	inline void	1505	void inline_size
1241	wlist_add (WL *head, WL elem)	1506	wlist_add (WL *head, WL elem)
1242	{	1507	{
1243	elem->next = *head;	1508	elem->next = *head;
1244	*head = elem;	1509	*head = elem;
1245	}	1510	}
1246		1511
1247	inline void	1512	void inline_size
1248	wlist_del (WL *head, WL elem)	1513	wlist_del (WL *head, WL elem)
1249	{	1514	{
1250	while (*head)	1515	while (*head)
1251	{	1516	{
1252	if (*head == elem)	1517	if (*head == elem)
…		…
1257		1522
1258	head = &(*head)->next;	1523	head = &(*head)->next;
1259	}	1524	}
1260	}	1525	}
1261		1526
1262	inline void	1527	void inline_speed
1263	ev_clear_pending (EV_P_ W w)	1528	clear_pending (EV_P_ W w)
1264	{	1529	{
1265	if (w->pending)	1530	if (w->pending)
1266	{	1531	{
1267	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1532	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1268	w->pending = 0;	1533	w->pending = 0;
1269	}	1534	}
1270	}	1535	}
1271		1536
1272	inline void	1537	void
		1538	ev_clear_pending (EV_P_ void *w, int invoke)
		1539	{
		1540	W w_ = (W)w;
		1541	int pending = w_->pending;
		1542
		1543	if (pending)
		1544	{
		1545	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1546
		1547	w_->pending = 0;
		1548	p->w = 0;
		1549
		1550	if (invoke)
		1551	EV_CB_INVOKE (w_, p->events);
		1552	}
		1553	}
		1554
		1555	void inline_size
		1556	pri_adjust (EV_P_ W w)
		1557	{
		1558	int pri = w->priority;
		1559	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1560	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1561	w->priority = pri;
		1562	}
		1563
		1564	void inline_speed
1273	ev_start (EV_P_ W w, int active)	1565	ev_start (EV_P_ W w, int active)
1274	{	1566	{
1275	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1567	pri_adjust (EV_A_ w);
1276	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1277
1278	w->active = active;	1568	w->active = active;
1279	ev_ref (EV_A);	1569	ev_ref (EV_A);
1280	}	1570	}
1281		1571
1282	inline void	1572	void inline_size
1283	ev_stop (EV_P_ W w)	1573	ev_stop (EV_P_ W w)
1284	{	1574	{
1285	ev_unref (EV_A);	1575	ev_unref (EV_A);
1286	w->active = 0;	1576	w->active = 0;
1287	}	1577	}
1288		1578
1289	/*****************************************************************************/	1579	/*****************************************************************************/
1290		1580
1291	void	1581	void
1292	ev_io_start (EV_P_ struct ev_io *w)	1582	ev_io_start (EV_P_ ev_io *w)
1293	{	1583	{
1294	int fd = w->fd;	1584	int fd = w->fd;
1295		1585
1296	if (ev_is_active (w))	1586	if (expect_false (ev_is_active (w)))
1297	return;	1587	return;
1298		1588
1299	assert (("ev_io_start called with negative fd", fd >= 0));	1589	assert (("ev_io_start called with negative fd", fd >= 0));
1300		1590
1301	ev_start (EV_A_ (W)w, 1);	1591	ev_start (EV_A_ (W)w, 1);
…		…
1304		1594
1305	fd_change (EV_A_ fd);	1595	fd_change (EV_A_ fd);
1306	}	1596	}
1307		1597
1308	void	1598	void
1309	ev_io_stop (EV_P_ struct ev_io *w)	1599	ev_io_stop (EV_P_ ev_io *w)
1310	{	1600	{
1311	ev_clear_pending (EV_A_ (W)w);	1601	clear_pending (EV_A_ (W)w);
1312	if (!ev_is_active (w))	1602	if (expect_false (!ev_is_active (w)))
1313	return;	1603	return;
1314		1604
1315	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1605	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1316		1606
1317	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1607	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
…		…
1319		1609
1320	fd_change (EV_A_ w->fd);	1610	fd_change (EV_A_ w->fd);
1321	}	1611	}
1322		1612
1323	void	1613	void
1324	ev_timer_start (EV_P_ struct ev_timer *w)	1614	ev_timer_start (EV_P_ ev_timer *w)
1325	{	1615	{
1326	if (ev_is_active (w))	1616	if (expect_false (ev_is_active (w)))
1327	return;	1617	return;
1328		1618
1329	((WT)w)->at += mn_now;	1619	((WT)w)->at += mn_now;
1330		1620
1331	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1621	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1332		1622
1333	ev_start (EV_A_ (W)w, ++timercnt);	1623	ev_start (EV_A_ (W)w, ++timercnt);
1334	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1624	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1335	timers [timercnt - 1] = w;	1625	timers [timercnt - 1] = w;
1336	upheap ((WT *)timers, timercnt - 1);	1626	upheap ((WT *)timers, timercnt - 1);
1337		1627
		1628	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1629	}
		1630
		1631	void
		1632	ev_timer_stop (EV_P_ ev_timer *w)
		1633	{
		1634	clear_pending (EV_A_ (W)w);
		1635	if (expect_false (!ev_is_active (w)))
		1636	return;
		1637
1338	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1638	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1339	}
1340		1639
1341	void	1640	{
1342	ev_timer_stop (EV_P_ struct ev_timer *w)	1641	int active = ((W)w)->active;
1343	{
1344	ev_clear_pending (EV_A_ (W)w);
1345	if (!ev_is_active (w))
1346	return;
1347		1642
1348	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1643	if (expect_true (--active < --timercnt))
1349
1350	if (((W)w)->active < timercnt--)
1351	{	1644	{
1352	timers [((W)w)->active - 1] = timers [timercnt];	1645	timers [active] = timers [timercnt];
1353	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1646	adjustheap ((WT *)timers, timercnt, active);
1354	}	1647	}
		1648	}
1355		1649
1356	((WT)w)->at -= mn_now;	1650	((WT)w)->at -= mn_now;
1357		1651
1358	ev_stop (EV_A_ (W)w);	1652	ev_stop (EV_A_ (W)w);
1359	}	1653	}
1360		1654
1361	void	1655	void
1362	ev_timer_again (EV_P_ struct ev_timer *w)	1656	ev_timer_again (EV_P_ ev_timer *w)
1363	{	1657	{
1364	if (ev_is_active (w))	1658	if (ev_is_active (w))
1365	{	1659	{
1366	if (w->repeat)	1660	if (w->repeat)
1367	{	1661	{
…		…
1370	}	1664	}
1371	else	1665	else
1372	ev_timer_stop (EV_A_ w);	1666	ev_timer_stop (EV_A_ w);
1373	}	1667	}
1374	else if (w->repeat)	1668	else if (w->repeat)
		1669	{
		1670	w->at = w->repeat;
1375	ev_timer_start (EV_A_ w);	1671	ev_timer_start (EV_A_ w);
		1672	}
1376	}	1673	}
1377		1674
1378	#if EV_PERIODICS	1675	#if EV_PERIODIC_ENABLE
1379	void	1676	void
1380	ev_periodic_start (EV_P_ struct ev_periodic *w)	1677	ev_periodic_start (EV_P_ ev_periodic *w)
1381	{	1678	{
1382	if (ev_is_active (w))	1679	if (expect_false (ev_is_active (w)))
1383	return;	1680	return;
1384		1681
1385	if (w->reschedule_cb)	1682	if (w->reschedule_cb)
1386	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1683	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1387	else if (w->interval)	1684	else if (w->interval)
…		…
1390	/* this formula differs from the one in periodic_reify because we do not always round up */	1687	/* this formula differs from the one in periodic_reify because we do not always round up */
1391	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1688	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1392	}	1689	}
1393		1690
1394	ev_start (EV_A_ (W)w, ++periodiccnt);	1691	ev_start (EV_A_ (W)w, ++periodiccnt);
1395	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1692	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1396	periodics [periodiccnt - 1] = w;	1693	periodics [periodiccnt - 1] = w;
1397	upheap ((WT *)periodics, periodiccnt - 1);	1694	upheap ((WT *)periodics, periodiccnt - 1);
1398		1695
		1696	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1697	}
		1698
		1699	void
		1700	ev_periodic_stop (EV_P_ ev_periodic *w)
		1701	{
		1702	clear_pending (EV_A_ (W)w);
		1703	if (expect_false (!ev_is_active (w)))
		1704	return;
		1705
1399	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1706	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1400	}
1401		1707
1402	void	1708	{
1403	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1709	int active = ((W)w)->active;
1404	{
1405	ev_clear_pending (EV_A_ (W)w);
1406	if (!ev_is_active (w))
1407	return;
1408		1710
1409	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1711	if (expect_true (--active < --periodiccnt))
1410
1411	if (((W)w)->active < periodiccnt--)
1412	{	1712	{
1413	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1713	periodics [active] = periodics [periodiccnt];
1414	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1714	adjustheap ((WT *)periodics, periodiccnt, active);
1415	}	1715	}
		1716	}
1416		1717
1417	ev_stop (EV_A_ (W)w);	1718	ev_stop (EV_A_ (W)w);
1418	}	1719	}
1419		1720
1420	void	1721	void
1421	ev_periodic_again (EV_P_ struct ev_periodic *w)	1722	ev_periodic_again (EV_P_ ev_periodic *w)
1422	{	1723	{
1423	/* TODO: use adjustheap and recalculation */	1724	/* TODO: use adjustheap and recalculation */
1424	ev_periodic_stop (EV_A_ w);	1725	ev_periodic_stop (EV_A_ w);
1425	ev_periodic_start (EV_A_ w);	1726	ev_periodic_start (EV_A_ w);
1426	}	1727	}
1427	#endif	1728	#endif
1428		1729
1429	void
1430	ev_idle_start (EV_P_ struct ev_idle *w)
1431	{
1432	if (ev_is_active (w))
1433	return;
1434
1435	ev_start (EV_A_ (W)w, ++idlecnt);
1436	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1437	idles [idlecnt - 1] = w;
1438	}
1439
1440	void
1441	ev_idle_stop (EV_P_ struct ev_idle *w)
1442	{
1443	ev_clear_pending (EV_A_ (W)w);
1444	if (ev_is_active (w))
1445	return;
1446
1447	idles [((W)w)->active - 1] = idles [--idlecnt];
1448	ev_stop (EV_A_ (W)w);
1449	}
1450
1451	void
1452	ev_prepare_start (EV_P_ struct ev_prepare *w)
1453	{
1454	if (ev_is_active (w))
1455	return;
1456
1457	ev_start (EV_A_ (W)w, ++preparecnt);
1458	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1459	prepares [preparecnt - 1] = w;
1460	}
1461
1462	void
1463	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1464	{
1465	ev_clear_pending (EV_A_ (W)w);
1466	if (!ev_is_active (w))
1467	return;
1468
1469	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1470	ev_stop (EV_A_ (W)w);
1471	}
1472
1473	void
1474	ev_check_start (EV_P_ struct ev_check *w)
1475	{
1476	if (ev_is_active (w))
1477	return;
1478
1479	ev_start (EV_A_ (W)w, ++checkcnt);
1480	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1481	checks [checkcnt - 1] = w;
1482	}
1483
1484	void
1485	ev_check_stop (EV_P_ struct ev_check *w)
1486	{
1487	ev_clear_pending (EV_A_ (W)w);
1488	if (!ev_is_active (w))
1489	return;
1490
1491	checks [((W)w)->active - 1] = checks [--checkcnt];
1492	ev_stop (EV_A_ (W)w);
1493	}
1494
1495	#ifndef SA_RESTART	1730	#ifndef SA_RESTART
1496	# define SA_RESTART 0	1731	# define SA_RESTART 0
1497	#endif	1732	#endif
1498		1733
1499	void	1734	void
1500	ev_signal_start (EV_P_ struct ev_signal *w)	1735	ev_signal_start (EV_P_ ev_signal *w)
1501	{	1736	{
1502	#if EV_MULTIPLICITY	1737	#if EV_MULTIPLICITY
1503	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1738	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1504	#endif	1739	#endif
1505	if (ev_is_active (w))	1740	if (expect_false (ev_is_active (w)))
1506	return;	1741	return;
1507		1742
1508	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1743	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1509		1744
1510	ev_start (EV_A_ (W)w, 1);	1745	ev_start (EV_A_ (W)w, 1);
1511	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1746	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1512	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1747	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1513		1748
1514	if (!((WL)w)->next)	1749	if (!((WL)w)->next)
1515	{	1750	{
1516	#if WIN32	1751	#if _WIN32
1517	signal (w->signum, sighandler);	1752	signal (w->signum, sighandler);
1518	#else	1753	#else
1519	struct sigaction sa;	1754	struct sigaction sa;
1520	sa.sa_handler = sighandler;	1755	sa.sa_handler = sighandler;
1521	sigfillset (&sa.sa_mask);	1756	sigfillset (&sa.sa_mask);
…		…
1524	#endif	1759	#endif
1525	}	1760	}
1526	}	1761	}
1527		1762
1528	void	1763	void
1529	ev_signal_stop (EV_P_ struct ev_signal *w)	1764	ev_signal_stop (EV_P_ ev_signal *w)
1530	{	1765	{
1531	ev_clear_pending (EV_A_ (W)w);	1766	clear_pending (EV_A_ (W)w);
1532	if (!ev_is_active (w))	1767	if (expect_false (!ev_is_active (w)))
1533	return;	1768	return;
1534		1769
1535	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1770	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1536	ev_stop (EV_A_ (W)w);	1771	ev_stop (EV_A_ (W)w);
1537		1772
1538	if (!signals [w->signum - 1].head)	1773	if (!signals [w->signum - 1].head)
1539	signal (w->signum, SIG_DFL);	1774	signal (w->signum, SIG_DFL);
1540	}	1775	}
1541		1776
1542	void	1777	void
1543	ev_child_start (EV_P_ struct ev_child *w)	1778	ev_child_start (EV_P_ ev_child *w)
1544	{	1779	{
1545	#if EV_MULTIPLICITY	1780	#if EV_MULTIPLICITY
1546	assert (("child watchers are only supported in the default loop", loop == default_loop));	1781	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1547	#endif	1782	#endif
1548	if (ev_is_active (w))	1783	if (expect_false (ev_is_active (w)))
1549	return;	1784	return;
1550		1785
1551	ev_start (EV_A_ (W)w, 1);	1786	ev_start (EV_A_ (W)w, 1);
1552	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1787	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1553	}	1788	}
1554		1789
1555	void	1790	void
1556	ev_child_stop (EV_P_ struct ev_child *w)	1791	ev_child_stop (EV_P_ ev_child *w)
1557	{	1792	{
1558	ev_clear_pending (EV_A_ (W)w);	1793	clear_pending (EV_A_ (W)w);
1559	if (!ev_is_active (w))	1794	if (expect_false (!ev_is_active (w)))
1560	return;	1795	return;
1561		1796
1562	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1797	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1563	ev_stop (EV_A_ (W)w);	1798	ev_stop (EV_A_ (W)w);
1564	}	1799	}
1565		1800
		1801	#if EV_STAT_ENABLE
		1802
		1803	# ifdef _WIN32
		1804	# undef lstat
		1805	# define lstat(a,b) _stati64 (a,b)
		1806	# endif
		1807
		1808	#define DEF_STAT_INTERVAL 5.0074891
		1809	#define MIN_STAT_INTERVAL 0.1074891
		1810
		1811	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1812
		1813	#if EV_USE_INOTIFY
		1814	# define EV_INOTIFY_BUFSIZE 8192
		1815
		1816	static void noinline
		1817	infy_add (EV_P_ ev_stat *w)
		1818	{
		1819	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);
		1820
		1821	if (w->wd < 0)
		1822	{
		1823	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1824
		1825	/* monitor some parent directory for speedup hints */
		1826	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1827	{
		1828	char path [4096];
		1829	strcpy (path, w->path);
		1830
		1831	do
		1832	{
		1833	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1834	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1835
		1836	char *pend = strrchr (path, '/');
		1837
		1838	if (!pend)
		1839	break; /* whoops, no '/', complain to your admin */
		1840
		1841	*pend = 0;
		1842	w->wd = inotify_add_watch (fs_fd, path, mask);
		1843	}
		1844	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1845	}
		1846	}
		1847	else
		1848	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1849
		1850	if (w->wd >= 0)
		1851	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1852	}
		1853
		1854	static void noinline
		1855	infy_del (EV_P_ ev_stat *w)
		1856	{
		1857	int slot;
		1858	int wd = w->wd;
		1859
		1860	if (wd < 0)
		1861	return;
		1862
		1863	w->wd = -2;
		1864	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1865	wlist_del (&fs_hash [slot].head, (WL)w);
		1866
		1867	/* remove this watcher, if others are watching it, they will rearm */
		1868	inotify_rm_watch (fs_fd, wd);
		1869	}
		1870
		1871	static void noinline
		1872	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1873	{
		1874	if (slot < 0)
		1875	/* overflow, need to check for all hahs slots */
		1876	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1877	infy_wd (EV_A_ slot, wd, ev);
		1878	else
		1879	{
		1880	WL w_;
		1881
		1882	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1883	{
		1884	ev_stat *w = (ev_stat *)w_;
		1885	w_ = w_->next; /* lets us remove this watcher and all before it */
		1886
		1887	if (w->wd == wd || wd == -1)
		1888	{
		1889	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1890	{
		1891	w->wd = -1;
		1892	infy_add (EV_A_ w); /* re-add, no matter what */
		1893	}
		1894
		1895	stat_timer_cb (EV_A_ &w->timer, 0);
		1896	}
		1897	}
		1898	}
		1899	}
		1900
		1901	static void
		1902	infy_cb (EV_P_ ev_io *w, int revents)
		1903	{
		1904	char buf [EV_INOTIFY_BUFSIZE];
		1905	struct inotify_event *ev = (struct inotify_event *)buf;
		1906	int ofs;
		1907	int len = read (fs_fd, buf, sizeof (buf));
		1908
		1909	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1910	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1911	}
		1912
		1913	void inline_size
		1914	infy_init (EV_P)
		1915	{
		1916	if (fs_fd != -2)
		1917	return;
		1918
		1919	fs_fd = inotify_init ();
		1920
		1921	if (fs_fd >= 0)
		1922	{
		1923	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1924	ev_set_priority (&fs_w, EV_MAXPRI);
		1925	ev_io_start (EV_A_ &fs_w);
		1926	}
		1927	}
		1928
		1929	void inline_size
		1930	infy_fork (EV_P)
		1931	{
		1932	int slot;
		1933
		1934	if (fs_fd < 0)
		1935	return;
		1936
		1937	close (fs_fd);
		1938	fs_fd = inotify_init ();
		1939
		1940	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1941	{
		1942	WL w_ = fs_hash [slot].head;
		1943	fs_hash [slot].head = 0;
		1944
		1945	while (w_)
		1946	{
		1947	ev_stat *w = (ev_stat *)w_;
		1948	w_ = w_->next; /* lets us add this watcher */
		1949
		1950	w->wd = -1;
		1951
		1952	if (fs_fd >= 0)
		1953	infy_add (EV_A_ w); /* re-add, no matter what */
		1954	else
		1955	ev_timer_start (EV_A_ &w->timer);
		1956	}
		1957
		1958	}
		1959	}
		1960
		1961	#endif
		1962
		1963	void
		1964	ev_stat_stat (EV_P_ ev_stat *w)
		1965	{
		1966	if (lstat (w->path, &w->attr) < 0)
		1967	w->attr.st_nlink = 0;
		1968	else if (!w->attr.st_nlink)
		1969	w->attr.st_nlink = 1;
		1970	}
		1971
		1972	static void noinline
		1973	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1974	{
		1975	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1976
		1977	/* we copy this here each the time so that */
		1978	/* prev has the old value when the callback gets invoked */
		1979	w->prev = w->attr;
		1980	ev_stat_stat (EV_A_ w);
		1981
		1982	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1983	if (
		1984	w->prev.st_dev != w->attr.st_dev
		1985	|| w->prev.st_ino != w->attr.st_ino
		1986	|| w->prev.st_mode != w->attr.st_mode
		1987	|| w->prev.st_nlink != w->attr.st_nlink
		1988	|| w->prev.st_uid != w->attr.st_uid
		1989	|| w->prev.st_gid != w->attr.st_gid
		1990	|| w->prev.st_rdev != w->attr.st_rdev
		1991	|| w->prev.st_size != w->attr.st_size
		1992	|| w->prev.st_atime != w->attr.st_atime
		1993	|| w->prev.st_mtime != w->attr.st_mtime
		1994	|| w->prev.st_ctime != w->attr.st_ctime
		1995	) {
		1996	#if EV_USE_INOTIFY
		1997	infy_del (EV_A_ w);
		1998	infy_add (EV_A_ w);
		1999	ev_stat_stat (EV_A_ w); /* avoid race... */
		2000	#endif
		2001
		2002	ev_feed_event (EV_A_ w, EV_STAT);
		2003	}
		2004	}
		2005
		2006	void
		2007	ev_stat_start (EV_P_ ev_stat *w)
		2008	{
		2009	if (expect_false (ev_is_active (w)))
		2010	return;
		2011
		2012	/* since we use memcmp, we need to clear any padding data etc. */
		2013	memset (&w->prev, 0, sizeof (ev_statdata));
		2014	memset (&w->attr, 0, sizeof (ev_statdata));
		2015
		2016	ev_stat_stat (EV_A_ w);
		2017
		2018	if (w->interval < MIN_STAT_INTERVAL)
		2019	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2020
		2021	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2022	ev_set_priority (&w->timer, ev_priority (w));
		2023
		2024	#if EV_USE_INOTIFY
		2025	infy_init (EV_A);
		2026
		2027	if (fs_fd >= 0)
		2028	infy_add (EV_A_ w);
		2029	else
		2030	#endif
		2031	ev_timer_start (EV_A_ &w->timer);
		2032
		2033	ev_start (EV_A_ (W)w, 1);
		2034	}
		2035
		2036	void
		2037	ev_stat_stop (EV_P_ ev_stat *w)
		2038	{
		2039	clear_pending (EV_A_ (W)w);
		2040	if (expect_false (!ev_is_active (w)))
		2041	return;
		2042
		2043	#if EV_USE_INOTIFY
		2044	infy_del (EV_A_ w);
		2045	#endif
		2046	ev_timer_stop (EV_A_ &w->timer);
		2047
		2048	ev_stop (EV_A_ (W)w);
		2049	}
		2050	#endif
		2051
		2052	#if EV_IDLE_ENABLE
		2053	void
		2054	ev_idle_start (EV_P_ ev_idle *w)
		2055	{
		2056	if (expect_false (ev_is_active (w)))
		2057	return;
		2058
		2059	pri_adjust (EV_A_ (W)w);
		2060
		2061	{
		2062	int active = ++idlecnt [ABSPRI (w)];
		2063
		2064	++idleall;
		2065	ev_start (EV_A_ (W)w, active);
		2066
		2067	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2068	idles [ABSPRI (w)][active - 1] = w;
		2069	}
		2070	}
		2071
		2072	void
		2073	ev_idle_stop (EV_P_ ev_idle *w)
		2074	{
		2075	clear_pending (EV_A_ (W)w);
		2076	if (expect_false (!ev_is_active (w)))
		2077	return;
		2078
		2079	{
		2080	int active = ((W)w)->active;
		2081
		2082	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2083	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2084
		2085	ev_stop (EV_A_ (W)w);
		2086	--idleall;
		2087	}
		2088	}
		2089	#endif
		2090
		2091	void
		2092	ev_prepare_start (EV_P_ ev_prepare *w)
		2093	{
		2094	if (expect_false (ev_is_active (w)))
		2095	return;
		2096
		2097	ev_start (EV_A_ (W)w, ++preparecnt);
		2098	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2099	prepares [preparecnt - 1] = w;
		2100	}
		2101
		2102	void
		2103	ev_prepare_stop (EV_P_ ev_prepare *w)
		2104	{
		2105	clear_pending (EV_A_ (W)w);
		2106	if (expect_false (!ev_is_active (w)))
		2107	return;
		2108
		2109	{
		2110	int active = ((W)w)->active;
		2111	prepares [active - 1] = prepares [--preparecnt];
		2112	((W)prepares [active - 1])->active = active;
		2113	}
		2114
		2115	ev_stop (EV_A_ (W)w);
		2116	}
		2117
		2118	void
		2119	ev_check_start (EV_P_ ev_check *w)
		2120	{
		2121	if (expect_false (ev_is_active (w)))
		2122	return;
		2123
		2124	ev_start (EV_A_ (W)w, ++checkcnt);
		2125	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2126	checks [checkcnt - 1] = w;
		2127	}
		2128
		2129	void
		2130	ev_check_stop (EV_P_ ev_check *w)
		2131	{
		2132	clear_pending (EV_A_ (W)w);
		2133	if (expect_false (!ev_is_active (w)))
		2134	return;
		2135
		2136	{
		2137	int active = ((W)w)->active;
		2138	checks [active - 1] = checks [--checkcnt];
		2139	((W)checks [active - 1])->active = active;
		2140	}
		2141
		2142	ev_stop (EV_A_ (W)w);
		2143	}
		2144
		2145	#if EV_EMBED_ENABLE
		2146	void noinline
		2147	ev_embed_sweep (EV_P_ ev_embed *w)
		2148	{
		2149	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2150	}
		2151
		2152	static void
		2153	embed_cb (EV_P_ ev_io *io, int revents)
		2154	{
		2155	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2156
		2157	if (ev_cb (w))
		2158	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2159	else
		2160	ev_embed_sweep (loop, w);
		2161	}
		2162
		2163	void
		2164	ev_embed_start (EV_P_ ev_embed *w)
		2165	{
		2166	if (expect_false (ev_is_active (w)))
		2167	return;
		2168
		2169	{
		2170	struct ev_loop *loop = w->loop;
		2171	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2172	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2173	}
		2174
		2175	ev_set_priority (&w->io, ev_priority (w));
		2176	ev_io_start (EV_A_ &w->io);
		2177
		2178	ev_start (EV_A_ (W)w, 1);
		2179	}
		2180
		2181	void
		2182	ev_embed_stop (EV_P_ ev_embed *w)
		2183	{
		2184	clear_pending (EV_A_ (W)w);
		2185	if (expect_false (!ev_is_active (w)))
		2186	return;
		2187
		2188	ev_io_stop (EV_A_ &w->io);
		2189
		2190	ev_stop (EV_A_ (W)w);
		2191	}
		2192	#endif
		2193
		2194	#if EV_FORK_ENABLE
		2195	void
		2196	ev_fork_start (EV_P_ ev_fork *w)
		2197	{
		2198	if (expect_false (ev_is_active (w)))
		2199	return;
		2200
		2201	ev_start (EV_A_ (W)w, ++forkcnt);
		2202	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2203	forks [forkcnt - 1] = w;
		2204	}
		2205
		2206	void
		2207	ev_fork_stop (EV_P_ ev_fork *w)
		2208	{
		2209	clear_pending (EV_A_ (W)w);
		2210	if (expect_false (!ev_is_active (w)))
		2211	return;
		2212
		2213	{
		2214	int active = ((W)w)->active;
		2215	forks [active - 1] = forks [--forkcnt];
		2216	((W)forks [active - 1])->active = active;
		2217	}
		2218
		2219	ev_stop (EV_A_ (W)w);
		2220	}
		2221	#endif
		2222
1566	/*****************************************************************************/	2223	/*****************************************************************************/
1567		2224
1568	struct ev_once	2225	struct ev_once
1569	{	2226	{
1570	struct ev_io io;	2227	ev_io io;
1571	struct ev_timer to;	2228	ev_timer to;
1572	void (*cb)(int revents, void *arg);	2229	void (*cb)(int revents, void *arg);
1573	void *arg;	2230	void *arg;
1574	};	2231	};
1575		2232
1576	static void	2233	static void
…		…
1585		2242
1586	cb (revents, arg);	2243	cb (revents, arg);
1587	}	2244	}
1588		2245
1589	static void	2246	static void
1590	once_cb_io (EV_P_ struct ev_io *w, int revents)	2247	once_cb_io (EV_P_ ev_io *w, int revents)
1591	{	2248	{
1592	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2249	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1593	}	2250	}
1594		2251
1595	static void	2252	static void
1596	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2253	once_cb_to (EV_P_ ev_timer *w, int revents)
1597	{	2254	{
1598	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2255	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1599	}	2256	}
1600		2257
1601	void	2258	void
1602	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2259	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1603	{	2260	{
1604	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	2261	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1605		2262
1606	if (!once)	2263	if (expect_false (!once))
		2264	{
1607	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2265	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1608	else	2266	return;
1609	{	2267	}
		2268
1610	once->cb = cb;	2269	once->cb = cb;
1611	once->arg = arg;	2270	once->arg = arg;
1612		2271
1613	ev_init (&once->io, once_cb_io);	2272	ev_init (&once->io, once_cb_io);
1614	if (fd >= 0)	2273	if (fd >= 0)
1615	{	2274	{
1616	ev_io_set (&once->io, fd, events);	2275	ev_io_set (&once->io, fd, events);
1617	ev_io_start (EV_A_ &once->io);	2276	ev_io_start (EV_A_ &once->io);
1618	}	2277	}
1619		2278
1620	ev_init (&once->to, once_cb_to);	2279	ev_init (&once->to, once_cb_to);
1621	if (timeout >= 0.)	2280	if (timeout >= 0.)
1622	{	2281	{
1623	ev_timer_set (&once->to, timeout, 0.);	2282	ev_timer_set (&once->to, timeout, 0.);
1624	ev_timer_start (EV_A_ &once->to);	2283	ev_timer_start (EV_A_ &once->to);
1625	}
1626	}	2284	}
1627	}	2285	}
1628		2286
1629	#ifdef __cplusplus	2287	#ifdef __cplusplus
1630	}	2288	}

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