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Comparing libev/ev.c (file contents):
Revision 1.89 by root, Sat Nov 10 19:48:44 2007 UTC vs.
Revision 1.165 by root, Fri Dec 7 18:09:38 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
		44	# ifndef EV_USE_MONOTONIC
40	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
41	# 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
42	# endif	57	# endif
43		58
		59	# ifndef EV_USE_SELECT
44	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
45	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
46	# endif	65	# endif
47		66
		67	# ifndef EV_USE_POLL
48	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
49	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
50	# endif	73	# endif
51		74
		75	# ifndef EV_USE_EPOLL
52	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
53	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
54	# endif	81	# endif
55		82
		83	# ifndef EV_USE_KQUEUE
56	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
57	# 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
58	# endif	105	# endif
59		106
60	#endif	107	#endif
61		108
62	#include <math.h>	109	#include <math.h>
…		…
71	#include <sys/types.h>	118	#include <sys/types.h>
72	#include <time.h>	119	#include <time.h>
73		120
74	#include <signal.h>	121	#include <signal.h>
75		122
76	#ifndef WIN32
77	# include <unistd.h>
78	# include <sys/time.h>
79	# include <sys/wait.h>
80	#endif
81	/**/
82
83	#ifndef EV_USE_MONOTONIC
84	# define EV_USE_MONOTONIC 1
85	#endif
86
87	#ifndef EV_USE_SELECT
88	# define EV_USE_SELECT 1
89	#endif
90
91	#ifndef EV_USE_POLL
92	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
93	#endif
94
95	#ifndef EV_USE_EPOLL
96	# define EV_USE_EPOLL 0
97	#endif
98
99	#ifndef EV_USE_KQUEUE
100	# define EV_USE_KQUEUE 0
101	#endif
102
103	#ifndef EV_USE_WIN32
104	# ifdef WIN32
105	# define EV_USE_WIN32 0 /* it does not exist, use select */
106	# undef EV_USE_SELECT
107	# define EV_USE_SELECT 1
108	# else
109	# define EV_USE_WIN32 0
110	# endif
111	#endif
112
113	#ifndef EV_USE_REALTIME
114	# define EV_USE_REALTIME 1
115	#endif
116
117	/**/
118
119	#ifndef CLOCK_MONOTONIC
120	# undef EV_USE_MONOTONIC
121	# define EV_USE_MONOTONIC 0
122	#endif
123
124	#ifndef CLOCK_REALTIME
125	# undef EV_USE_REALTIME
126	# define EV_USE_REALTIME 0
127	#endif
128
129	/**/
130
131	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
132	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
133	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
134	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
135
136	#ifdef EV_H	123	#ifdef EV_H
137	# include EV_H	124	# include EV_H
138	#else	125	#else
139	# include "ev.h"	126	# include "ev.h"
140	#endif	127	#endif
141		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
142	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
143	# 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
144	# 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
145	#else	235	#else
146	# define expect(expr,value) (expr)	236	# define expect(expr,value) (expr)
		237	# define inline_speed static
147	# define inline static	238	# define inline_size static
		239	# define noinline
148	#endif	240	#endif
149		241
150	#define expect_false(expr) expect ((expr) != 0, 0)	242	#define expect_false(expr) expect ((expr) != 0, 0)
151	#define expect_true(expr) expect ((expr) != 0, 1)	243	#define expect_true(expr) expect ((expr) != 0, 1)
152		244
153	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
154	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	246	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
155		247
		248	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		249	#define EMPTY2(a,b) /* used to suppress some warnings */
		250
156	typedef struct ev_watcher *W;	251	typedef ev_watcher *W;
157	typedef struct ev_watcher_list *WL;	252	typedef ev_watcher_list *WL;
158	typedef struct ev_watcher_time *WT;	253	typedef ev_watcher_time *WT;
159		254
160	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
161		256
		257	#ifdef _WIN32
162	#include "ev_win32.c"	258	# include "ev_win32.c"
		259	#endif
163		260
164	/*****************************************************************************/	261	/*****************************************************************************/
165		262
166	static void (*syserr_cb)(const char *msg);	263	static void (*syserr_cb)(const char *msg);
167		264
		265	void
168	void ev_set_syserr_cb (void (*cb)(const char *msg))	266	ev_set_syserr_cb (void (*cb)(const char *msg))
169	{	267	{
170	syserr_cb = cb;	268	syserr_cb = cb;
171	}	269	}
172		270
173	static void	271	static void noinline
174	syserr (const char *msg)	272	syserr (const char *msg)
175	{	273	{
176	if (!msg)	274	if (!msg)
177	msg = "(libev) system error";	275	msg = "(libev) system error";
178		276
…		…
185	}	283	}
186	}	284	}
187		285
188	static void *(*alloc)(void *ptr, long size);	286	static void *(*alloc)(void *ptr, long size);
189		287
		288	void
190	void ev_set_allocator (void *(*cb)(void *ptr, long size))	289	ev_set_allocator (void *(*cb)(void *ptr, long size))
191	{	290	{
192	alloc = cb;	291	alloc = cb;
193	}	292	}
194		293
195	static void *	294	inline_speed void *
196	ev_realloc (void *ptr, long size)	295	ev_realloc (void *ptr, long size)
197	{	296	{
198	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	297	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
199		298
200	if (!ptr && size)	299	if (!ptr && size)
…		…
214	typedef struct	313	typedef struct
215	{	314	{
216	WL head;	315	WL head;
217	unsigned char events;	316	unsigned char events;
218	unsigned char reify;	317	unsigned char reify;
		318	#if EV_SELECT_IS_WINSOCKET
		319	SOCKET handle;
		320	#endif
219	} ANFD;	321	} ANFD;
220		322
221	typedef struct	323	typedef struct
222	{	324	{
223	W w;	325	W w;
224	int events;	326	int events;
225	} ANPENDING;	327	} ANPENDING;
226		328
		329	#if EV_USE_INOTIFY
		330	typedef struct
		331	{
		332	WL head;
		333	} ANFS;
		334	#endif
		335
227	#if EV_MULTIPLICITY	336	#if EV_MULTIPLICITY
228		337
229	struct ev_loop	338	struct ev_loop
230	{	339	{
231	ev_tstamp ev_rt_now;	340	ev_tstamp ev_rt_now;
		341	#define ev_rt_now ((loop)->ev_rt_now)
232	#define VAR(name,decl) decl;	342	#define VAR(name,decl) decl;
233	#include "ev_vars.h"	343	#include "ev_vars.h"
234	#undef VAR	344	#undef VAR
235	};	345	};
236	#include "ev_wrap.h"	346	#include "ev_wrap.h"
237		347
238	struct ev_loop default_loop_struct;	348	static struct ev_loop default_loop_struct;
239	static struct ev_loop *default_loop;	349	struct ev_loop *ev_default_loop_ptr;
240		350
241	#else	351	#else
242		352
243	ev_tstamp ev_rt_now;	353	ev_tstamp ev_rt_now;
244	#define VAR(name,decl) static decl;	354	#define VAR(name,decl) static decl;
245	#include "ev_vars.h"	355	#include "ev_vars.h"
246	#undef VAR	356	#undef VAR
247		357
248	static int default_loop;	358	static int ev_default_loop_ptr;
249		359
250	#endif	360	#endif
251		361
252	/*****************************************************************************/	362	/*****************************************************************************/
253		363
254	inline ev_tstamp	364	ev_tstamp
255	ev_time (void)	365	ev_time (void)
256	{	366	{
257	#if EV_USE_REALTIME	367	#if EV_USE_REALTIME
258	struct timespec ts;	368	struct timespec ts;
259	clock_gettime (CLOCK_REALTIME, &ts);	369	clock_gettime (CLOCK_REALTIME, &ts);
…		…
263	gettimeofday (&tv, 0);	373	gettimeofday (&tv, 0);
264	return tv.tv_sec + tv.tv_usec * 1e-6;	374	return tv.tv_sec + tv.tv_usec * 1e-6;
265	#endif	375	#endif
266	}	376	}
267		377
268	inline ev_tstamp	378	ev_tstamp inline_size
269	get_clock (void)	379	get_clock (void)
270	{	380	{
271	#if EV_USE_MONOTONIC	381	#if EV_USE_MONOTONIC
272	if (expect_true (have_monotonic))	382	if (expect_true (have_monotonic))
273	{	383	{
…		…
286	{	396	{
287	return ev_rt_now;	397	return ev_rt_now;
288	}	398	}
289	#endif	399	#endif
290		400
291	#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	}
292		428
293	#define array_needsize(type,base,cur,cnt,init) \	429	#define array_needsize(type,base,cur,cnt,init) \
294	if (expect_false ((cnt) > cur)) \	430	if (expect_false ((cnt) > (cur))) \
295	{ \	431	{ \
296	int newcnt = cur; \	432	int ocur_ = (cur); \
297	do \	433	(base) = (type *)array_realloc \
298	{ \	434	(sizeof (type), (base), &(cur), (cnt)); \
299	newcnt = array_roundsize (type, newcnt << 1); \	435	init ((base) + (ocur_), (cur) - ocur_); \
300	} \
301	while ((cnt) > newcnt); \
302	\
303	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
304	init (base + cur, newcnt - cur); \
305	cur = newcnt; \
306	}	436	}
307		437
		438	#if 0
308	#define array_slim(type,stem) \	439	#define array_slim(type,stem) \
309	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	440	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
310	{ \	441	{ \
311	stem ## max = array_roundsize (stem ## cnt >> 1); \	442	stem ## max = array_roundsize (stem ## cnt >> 1); \
312	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	443	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
313	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	444	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
314	}	445	}
315		446	#endif
316	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
317	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
318	#define array_free_microshit(stem) \
319	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
320		447
321	#define array_free(stem, idx) \	448	#define array_free(stem, idx) \
322	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;
323		450
324	/*****************************************************************************/	451	/*****************************************************************************/
325		452
326	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
327	anfds_init (ANFD *base, int count)	482	anfds_init (ANFD *base, int count)
328	{	483	{
329	while (count--)	484	while (count--)
330	{	485	{
331	base->head = 0;	486	base->head = 0;
…		…
334		489
335	++base;	490	++base;
336	}	491	}
337	}	492	}
338		493
339	void	494	void inline_speed
340	ev_feed_event (EV_P_ void *w, int revents)
341	{
342	W w_ = (W)w;
343
344	if (w_->pending)
345	{
346	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
347	return;
348	}
349
350	w_->pending = ++pendingcnt [ABSPRI (w_)];
351	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
352	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
353	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
354	}
355
356	static void
357	queue_events (EV_P_ W *events, int eventcnt, int type)
358	{
359	int i;
360
361	for (i = 0; i < eventcnt; ++i)
362	ev_feed_event (EV_A_ events [i], type);
363	}
364
365	inline void
366	fd_event (EV_P_ int fd, int revents)	495	fd_event (EV_P_ int fd, int revents)
367	{	496	{
368	ANFD *anfd = anfds + fd;	497	ANFD *anfd = anfds + fd;
369	struct ev_io *w;	498	ev_io *w;
370		499
371	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)
372	{	501	{
373	int ev = w->events & revents;	502	int ev = w->events & revents;
374		503
375	if (ev)	504	if (ev)
376	ev_feed_event (EV_A_ (W)w, ev);	505	ev_feed_event (EV_A_ (W)w, ev);
…		…
381	ev_feed_fd_event (EV_P_ int fd, int revents)	510	ev_feed_fd_event (EV_P_ int fd, int revents)
382	{	511	{
383	fd_event (EV_A_ fd, revents);	512	fd_event (EV_A_ fd, revents);
384	}	513	}
385		514
386	/*****************************************************************************/	515	void inline_size
387
388	static void
389	fd_reify (EV_P)	516	fd_reify (EV_P)
390	{	517	{
391	int i;	518	int i;
392		519
393	for (i = 0; i < fdchangecnt; ++i)	520	for (i = 0; i < fdchangecnt; ++i)
394	{	521	{
395	int fd = fdchanges [i];	522	int fd = fdchanges [i];
396	ANFD *anfd = anfds + fd;	523	ANFD *anfd = anfds + fd;
397	struct ev_io *w;	524	ev_io *w;
398		525
399	int events = 0;	526	int events = 0;
400		527
401	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)
402	events |= w->events;	529	events |= w->events;
403		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
404	anfd->reify = 0;	540	anfd->reify = 0;
405		541
406	method_modify (EV_A_ fd, anfd->events, events);	542	backend_modify (EV_A_ fd, anfd->events, events);
407	anfd->events = events;	543	anfd->events = events;
408	}	544	}
409		545
410	fdchangecnt = 0;	546	fdchangecnt = 0;
411	}	547	}
412		548
413	static void	549	void inline_size
414	fd_change (EV_P_ int fd)	550	fd_change (EV_P_ int fd)
415	{	551	{
416	if (anfds [fd].reify)	552	if (expect_false (anfds [fd].reify))
417	return;	553	return;
418		554
419	anfds [fd].reify = 1;	555	anfds [fd].reify = 1;
420		556
421	++fdchangecnt;	557	++fdchangecnt;
422	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));	558	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
423	fdchanges [fdchangecnt - 1] = fd;	559	fdchanges [fdchangecnt - 1] = fd;
424	}	560	}
425		561
426	static void	562	void inline_speed
427	fd_kill (EV_P_ int fd)	563	fd_kill (EV_P_ int fd)
428	{	564	{
429	struct ev_io *w;	565	ev_io *w;
430		566
431	while ((w = (struct ev_io *)anfds [fd].head))	567	while ((w = (ev_io *)anfds [fd].head))
432	{	568	{
433	ev_io_stop (EV_A_ w);	569	ev_io_stop (EV_A_ w);
434	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);
435	}	571	}
436	}	572	}
437		573
438	static int	574	int inline_size
439	fd_valid (int fd)	575	fd_valid (int fd)
440	{	576	{
441	#ifdef WIN32	577	#ifdef _WIN32
442	return !!win32_get_osfhandle (fd);	578	return _get_osfhandle (fd) != -1;
443	#else	579	#else
444	return fcntl (fd, F_GETFD) != -1;	580	return fcntl (fd, F_GETFD) != -1;
445	#endif	581	#endif
446	}	582	}
447		583
448	/* called on EBADF to verify fds */	584	/* called on EBADF to verify fds */
449	static void	585	static void noinline
450	fd_ebadf (EV_P)	586	fd_ebadf (EV_P)
451	{	587	{
452	int fd;	588	int fd;
453		589
454	for (fd = 0; fd < anfdmax; ++fd)	590	for (fd = 0; fd < anfdmax; ++fd)
…		…
456	if (!fd_valid (fd) == -1 && errno == EBADF)	592	if (!fd_valid (fd) == -1 && errno == EBADF)
457	fd_kill (EV_A_ fd);	593	fd_kill (EV_A_ fd);
458	}	594	}
459		595
460	/* 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 */
461	static void	597	static void noinline
462	fd_enomem (EV_P)	598	fd_enomem (EV_P)
463	{	599	{
464	int fd;	600	int fd;
465		601
466	for (fd = anfdmax; fd--; )	602	for (fd = anfdmax; fd--; )
…		…
469	fd_kill (EV_A_ fd);	605	fd_kill (EV_A_ fd);
470	return;	606	return;
471	}	607	}
472	}	608	}
473		609
474	/* 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 */
475	static void	611	static void noinline
476	fd_rearm_all (EV_P)	612	fd_rearm_all (EV_P)
477	{	613	{
478	int fd;	614	int fd;
479		615
480	/* this should be highly optimised to not do anything but set a flag */
481	for (fd = 0; fd < anfdmax; ++fd)	616	for (fd = 0; fd < anfdmax; ++fd)
482	if (anfds [fd].events)	617	if (anfds [fd].events)
483	{	618	{
484	anfds [fd].events = 0;	619	anfds [fd].events = 0;
485	fd_change (EV_A_ fd);	620	fd_change (EV_A_ fd);
486	}	621	}
487	}	622	}
488		623
489	/*****************************************************************************/	624	/*****************************************************************************/
490		625
491	static void	626	void inline_speed
492	upheap (WT *heap, int k)	627	upheap (WT *heap, int k)
493	{	628	{
494	WT w = heap [k];	629	WT w = heap [k];
495		630
496	while (k && heap [k >> 1]->at > w->at)	631	while (k && heap [k >> 1]->at > w->at)
…		…
503	heap [k] = w;	638	heap [k] = w;
504	((W)heap [k])->active = k + 1;	639	((W)heap [k])->active = k + 1;
505		640
506	}	641	}
507		642
508	static void	643	void inline_speed
509	downheap (WT *heap, int N, int k)	644	downheap (WT *heap, int N, int k)
510	{	645	{
511	WT w = heap [k];	646	WT w = heap [k];
512		647
513	while (k < (N >> 1))	648	while (k < (N >> 1))
…		…
527		662
528	heap [k] = w;	663	heap [k] = w;
529	((W)heap [k])->active = k + 1;	664	((W)heap [k])->active = k + 1;
530	}	665	}
531		666
532	inline void	667	void inline_size
533	adjustheap (WT *heap, int N, int k, ev_tstamp at)	668	adjustheap (WT *heap, int N, int k)
534	{	669	{
535	ev_tstamp old_at = heap [k]->at;	670	upheap (heap, k);
536	heap [k]->at = at;
537
538	if (old_at < at)
539	downheap (heap, N, k);	671	downheap (heap, N, k);
540	else
541	upheap (heap, k);
542	}	672	}
543		673
544	/*****************************************************************************/	674	/*****************************************************************************/
545		675
546	typedef struct	676	typedef struct
…		…
552	static ANSIG *signals;	682	static ANSIG *signals;
553	static int signalmax;	683	static int signalmax;
554		684
555	static int sigpipe [2];	685	static int sigpipe [2];
556	static sig_atomic_t volatile gotsig;	686	static sig_atomic_t volatile gotsig;
557	static struct ev_io sigev;	687	static ev_io sigev;
558		688
559	static void	689	void inline_size
560	signals_init (ANSIG *base, int count)	690	signals_init (ANSIG *base, int count)
561	{	691	{
562	while (count--)	692	while (count--)
563	{	693	{
564	base->head = 0;	694	base->head = 0;
…		…
569	}	699	}
570		700
571	static void	701	static void
572	sighandler (int signum)	702	sighandler (int signum)
573	{	703	{
574	#if WIN32	704	#if _WIN32
575	signal (signum, sighandler);	705	signal (signum, sighandler);
576	#endif	706	#endif
577		707
578	signals [signum - 1].gotsig = 1;	708	signals [signum - 1].gotsig = 1;
579		709
580	if (!gotsig)	710	if (!gotsig)
581	{	711	{
582	int old_errno = errno;	712	int old_errno = errno;
583	gotsig = 1;	713	gotsig = 1;
584	#ifdef WIN32
585	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
586	#else
587	write (sigpipe [1], &signum, 1);	714	write (sigpipe [1], &signum, 1);
588	#endif
589	errno = old_errno;	715	errno = old_errno;
590	}	716	}
591	}	717	}
592		718
593	void	719	void noinline
594	ev_feed_signal_event (EV_P_ int signum)	720	ev_feed_signal_event (EV_P_ int signum)
595	{	721	{
596	WL w;	722	WL w;
597		723
598	#if EV_MULTIPLICITY	724	#if EV_MULTIPLICITY
599	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));
600	#endif	726	#endif
601		727
602	--signum;	728	--signum;
603		729
604	if (signum < 0 || signum >= signalmax)	730	if (signum < 0 || signum >= signalmax)
…		…
609	for (w = signals [signum].head; w; w = w->next)	735	for (w = signals [signum].head; w; w = w->next)
610	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	736	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
611	}	737	}
612		738
613	static void	739	static void
614	sigcb (EV_P_ struct ev_io *iow, int revents)	740	sigcb (EV_P_ ev_io *iow, int revents)
615	{	741	{
616	int signum;	742	int signum;
617		743
618	#ifdef WIN32
619	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
620	#else
621	read (sigpipe [0], &revents, 1);	744	read (sigpipe [0], &revents, 1);
622	#endif
623	gotsig = 0;	745	gotsig = 0;
624		746
625	for (signum = signalmax; signum--; )	747	for (signum = signalmax; signum--; )
626	if (signals [signum].gotsig)	748	if (signals [signum].gotsig)
627	ev_feed_signal_event (EV_A_ signum + 1);	749	ev_feed_signal_event (EV_A_ signum + 1);
628	}	750	}
629		751
630	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
631	siginit (EV_P)	765	siginit (EV_P)
632	{	766	{
633	#ifndef WIN32	767	fd_intern (sigpipe [0]);
634	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	768	fd_intern (sigpipe [1]);
635	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
636
637	/* rather than sort out wether we really need nb, set it */
638	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
639	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
640	#endif
641		769
642	ev_io_set (&sigev, sigpipe [0], EV_READ);	770	ev_io_set (&sigev, sigpipe [0], EV_READ);
643	ev_io_start (EV_A_ &sigev);	771	ev_io_start (EV_A_ &sigev);
644	ev_unref (EV_A); /* child watcher should not keep loop alive */	772	ev_unref (EV_A); /* child watcher should not keep loop alive */
645	}	773	}
646		774
647	/*****************************************************************************/	775	/*****************************************************************************/
648		776
649	static struct ev_child *childs [PID_HASHSIZE];	777	static ev_child *childs [EV_PID_HASHSIZE];
650		778
651	#ifndef WIN32	779	#ifndef _WIN32
652		780
653	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	}
654		797
655	#ifndef WCONTINUED	798	#ifndef WCONTINUED
656	# define WCONTINUED 0	799	# define WCONTINUED 0
657	#endif	800	#endif
658		801
659	static void	802	static void
660	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
661	{
662	struct ev_child *w;
663
664	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
665	if (w->pid == pid || !w->pid)
666	{
667	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
668	w->rpid = pid;
669	w->rstatus = status;
670	ev_feed_event (EV_A_ (W)w, EV_CHILD);
671	}
672	}
673
674	static void
675	childcb (EV_P_ struct ev_signal *sw, int revents)	803	childcb (EV_P_ ev_signal *sw, int revents)
676	{	804	{
677	int pid, status;	805	int pid, status;
678		806
		807	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
679	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	808	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
680	{	809	if (!WCONTINUED
		810	|| errno != EINVAL
		811	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		812	return;
		813
681	/* 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 */
682	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	816	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
683		817
684	child_reap (EV_A_ sw, pid, pid, status);	818	child_reap (EV_A_ sw, pid, pid, status);
		819	if (EV_PID_HASHSIZE > 1)
685	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 */
686	}
687	}	821	}
688		822
689	#endif	823	#endif
690		824
691	/*****************************************************************************/	825	/*****************************************************************************/
692		826
		827	#if EV_USE_PORT
		828	# include "ev_port.c"
		829	#endif
693	#if EV_USE_KQUEUE	830	#if EV_USE_KQUEUE
694	# include "ev_kqueue.c"	831	# include "ev_kqueue.c"
695	#endif	832	#endif
696	#if EV_USE_EPOLL	833	#if EV_USE_EPOLL
697	# include "ev_epoll.c"	834	# include "ev_epoll.c"
…		…
714	{	851	{
715	return EV_VERSION_MINOR;	852	return EV_VERSION_MINOR;
716	}	853	}
717		854
718	/* 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 */
719	static int	856	int inline_size
720	enable_secure (void)	857	enable_secure (void)
721	{	858	{
722	#ifdef WIN32	859	#ifdef _WIN32
723	return 0;	860	return 0;
724	#else	861	#else
725	return getuid () != geteuid ()	862	return getuid () != geteuid ()
726	|| getgid () != getegid ();	863	|| getgid () != getegid ();
727	#endif	864	#endif
728	}	865	}
729		866
730	int	867	unsigned int
731	ev_method (EV_P)	868	ev_supported_backends (void)
732	{	869	{
733	return method;	870	unsigned int flags = 0;
734	}
735		871
736	static void	872	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
737	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)
738	{	883	{
739	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)
740	{	923	{
741	#if EV_USE_MONOTONIC	924	#if EV_USE_MONOTONIC
742	{	925	{
743	struct timespec ts;	926	struct timespec ts;
744	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	927	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
…		…
749	ev_rt_now = ev_time ();	932	ev_rt_now = ev_time ();
750	mn_now = get_clock ();	933	mn_now = get_clock ();
751	now_floor = mn_now;	934	now_floor = mn_now;
752	rtmn_diff = ev_rt_now - mn_now;	935	rtmn_diff = ev_rt_now - mn_now;
753		936
754	if (methods == EVMETHOD_AUTO)	937	/* pid check not overridable via env */
755	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"))
756	methods = atoi (getenv ("LIBEV_METHODS"));	946	flags = atoi (getenv ("LIBEV_FLAGS"));
757	else
758	methods = EVMETHOD_ANY;
759		947
760	method = 0;	948	if (!(flags & 0x0000ffffUL))
		949	flags |= ev_recommended_backends ();
		950
		951	backend = 0;
		952	backend_fd = -1;
761	#if EV_USE_WIN32	953	#if EV_USE_INOTIFY
762	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);
763	#endif	959	#endif
764	#if EV_USE_KQUEUE	960	#if EV_USE_KQUEUE
765	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	961	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
766	#endif	962	#endif
767	#if EV_USE_EPOLL	963	#if EV_USE_EPOLL
768	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	964	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
769	#endif	965	#endif
770	#if EV_USE_POLL	966	#if EV_USE_POLL
771	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	967	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
772	#endif	968	#endif
773	#if EV_USE_SELECT	969	#if EV_USE_SELECT
774	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	970	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
775	#endif	971	#endif
776		972
777	ev_init (&sigev, sigcb);	973	ev_init (&sigev, sigcb);
778	ev_set_priority (&sigev, EV_MAXPRI);	974	ev_set_priority (&sigev, EV_MAXPRI);
779	}	975	}
780	}	976	}
781		977
782	void	978	static void noinline
783	loop_destroy (EV_P)	979	loop_destroy (EV_P)
784	{	980	{
785	int i;	981	int i;
786		982
787	#if EV_USE_WIN32	983	#if EV_USE_INOTIFY
788	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);
789	#endif	993	#endif
790	#if EV_USE_KQUEUE	994	#if EV_USE_KQUEUE
791	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	995	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
792	#endif	996	#endif
793	#if EV_USE_EPOLL	997	#if EV_USE_EPOLL
794	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	998	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
795	#endif	999	#endif
796	#if EV_USE_POLL	1000	#if EV_USE_POLL
797	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	1001	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
798	#endif	1002	#endif
799	#if EV_USE_SELECT	1003	#if EV_USE_SELECT
800	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	1004	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
801	#endif	1005	#endif
802		1006
803	for (i = NUMPRI; i--; )	1007	for (i = NUMPRI; i--; )
		1008	{
804	array_free (pending, [i]);	1009	array_free (pending, [i]);
		1010	#if EV_IDLE_ENABLE
		1011	array_free (idle, [i]);
		1012	#endif
		1013	}
805		1014
806	/* have to use the microsoft-never-gets-it-right macro */	1015	/* have to use the microsoft-never-gets-it-right macro */
807	array_free_microshit (fdchange);	1016	array_free (fdchange, EMPTY);
808	array_free_microshit (timer);	1017	array_free (timer, EMPTY);
809	array_free_microshit (periodic);	1018	#if EV_PERIODIC_ENABLE
810	array_free_microshit (idle);	1019	array_free (periodic, EMPTY);
811	array_free_microshit (prepare);	1020	#endif
812	array_free_microshit (check);	1021	array_free (prepare, EMPTY);
		1022	array_free (check, EMPTY);
813		1023
814	method = 0;	1024	backend = 0;
815	}	1025	}
816		1026
817	static void	1027	void inline_size infy_fork (EV_P);
		1028
		1029	void inline_size
818	loop_fork (EV_P)	1030	loop_fork (EV_P)
819	{	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
820	#if EV_USE_EPOLL	1038	#if EV_USE_EPOLL
821	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1039	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
822	#endif	1040	#endif
823	#if EV_USE_KQUEUE	1041	#if EV_USE_INOTIFY
824	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1042	infy_fork (EV_A);
825	#endif	1043	#endif
826		1044
827	if (ev_is_active (&sigev))	1045	if (ev_is_active (&sigev))
828	{	1046	{
829	/* default loop */	1047	/* default loop */
…		…
842	postfork = 0;	1060	postfork = 0;
843	}	1061	}
844		1062
845	#if EV_MULTIPLICITY	1063	#if EV_MULTIPLICITY
846	struct ev_loop *	1064	struct ev_loop *
847	ev_loop_new (int methods)	1065	ev_loop_new (unsigned int flags)
848	{	1066	{
849	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));
850		1068
851	memset (loop, 0, sizeof (struct ev_loop));	1069	memset (loop, 0, sizeof (struct ev_loop));
852		1070
853	loop_init (EV_A_ methods);	1071	loop_init (EV_A_ flags);
854		1072
855	if (ev_method (EV_A))	1073	if (ev_backend (EV_A))
856	return loop;	1074	return loop;
857		1075
858	return 0;	1076	return 0;
859	}	1077	}
860		1078
…		…
873		1091
874	#endif	1092	#endif
875		1093
876	#if EV_MULTIPLICITY	1094	#if EV_MULTIPLICITY
877	struct ev_loop *	1095	struct ev_loop *
		1096	ev_default_loop_init (unsigned int flags)
878	#else	1097	#else
879	int	1098	int
		1099	ev_default_loop (unsigned int flags)
880	#endif	1100	#endif
881	ev_default_loop (int methods)
882	{	1101	{
883	if (sigpipe [0] == sigpipe [1])	1102	if (sigpipe [0] == sigpipe [1])
884	if (pipe (sigpipe))	1103	if (pipe (sigpipe))
885	return 0;	1104	return 0;
886		1105
887	if (!default_loop)	1106	if (!ev_default_loop_ptr)
888	{	1107	{
889	#if EV_MULTIPLICITY	1108	#if EV_MULTIPLICITY
890	struct ev_loop *loop = default_loop = &default_loop_struct;	1109	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
891	#else	1110	#else
892	default_loop = 1;	1111	ev_default_loop_ptr = 1;
893	#endif	1112	#endif
894		1113
895	loop_init (EV_A_ methods);	1114	loop_init (EV_A_ flags);
896		1115
897	if (ev_method (EV_A))	1116	if (ev_backend (EV_A))
898	{	1117	{
899	siginit (EV_A);	1118	siginit (EV_A);
900		1119
901	#ifndef WIN32	1120	#ifndef _WIN32
902	ev_signal_init (&childev, childcb, SIGCHLD);	1121	ev_signal_init (&childev, childcb, SIGCHLD);
903	ev_set_priority (&childev, EV_MAXPRI);	1122	ev_set_priority (&childev, EV_MAXPRI);
904	ev_signal_start (EV_A_ &childev);	1123	ev_signal_start (EV_A_ &childev);
905	ev_unref (EV_A); /* child watcher should not keep loop alive */	1124	ev_unref (EV_A); /* child watcher should not keep loop alive */
906	#endif	1125	#endif
907	}	1126	}
908	else	1127	else
909	default_loop = 0;	1128	ev_default_loop_ptr = 0;
910	}	1129	}
911		1130
912	return default_loop;	1131	return ev_default_loop_ptr;
913	}	1132	}
914		1133
915	void	1134	void
916	ev_default_destroy (void)	1135	ev_default_destroy (void)
917	{	1136	{
918	#if EV_MULTIPLICITY	1137	#if EV_MULTIPLICITY
919	struct ev_loop *loop = default_loop;	1138	struct ev_loop *loop = ev_default_loop_ptr;
920	#endif	1139	#endif
921		1140
922	#ifndef WIN32	1141	#ifndef _WIN32
923	ev_ref (EV_A); /* child watcher */	1142	ev_ref (EV_A); /* child watcher */
924	ev_signal_stop (EV_A_ &childev);	1143	ev_signal_stop (EV_A_ &childev);
925	#endif	1144	#endif
926		1145
927	ev_ref (EV_A); /* signal watcher */	1146	ev_ref (EV_A); /* signal watcher */
…		…
935		1154
936	void	1155	void
937	ev_default_fork (void)	1156	ev_default_fork (void)
938	{	1157	{
939	#if EV_MULTIPLICITY	1158	#if EV_MULTIPLICITY
940	struct ev_loop *loop = default_loop;	1159	struct ev_loop *loop = ev_default_loop_ptr;
941	#endif	1160	#endif
942		1161
943	if (method)	1162	if (backend)
944	postfork = 1;	1163	postfork = 1;
945	}	1164	}
946		1165
947	/*****************************************************************************/	1166	/*****************************************************************************/
948		1167
949	static int	1168	void inline_speed
950	any_pending (EV_P)
951	{
952	int pri;
953
954	for (pri = NUMPRI; pri--; )
955	if (pendingcnt [pri])
956	return 1;
957
958	return 0;
959	}
960
961	static void
962	call_pending (EV_P)	1169	call_pending (EV_P)
963	{	1170	{
964	int pri;	1171	int pri;
965		1172
966	for (pri = NUMPRI; pri--; )	1173	for (pri = NUMPRI; pri--; )
967	while (pendingcnt [pri])	1174	while (pendingcnt [pri])
968	{	1175	{
969	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1176	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
970		1177
971	if (p->w)	1178	if (expect_true (p->w))
972	{	1179	{
		1180	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1181
973	p->w->pending = 0;	1182	p->w->pending = 0;
974	EV_CB_INVOKE (p->w, p->events);	1183	EV_CB_INVOKE (p->w, p->events);
975	}	1184	}
976	}	1185	}
977	}	1186	}
978		1187
979	static void	1188	void inline_size
980	timers_reify (EV_P)	1189	timers_reify (EV_P)
981	{	1190	{
982	while (timercnt && ((WT)timers [0])->at <= mn_now)	1191	while (timercnt && ((WT)timers [0])->at <= mn_now)
983	{	1192	{
984	struct ev_timer *w = timers [0];	1193	ev_timer *w = timers [0];
985		1194
986	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1195	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
987		1196
988	/* first reschedule or stop timer */	1197	/* first reschedule or stop timer */
989	if (w->repeat)	1198	if (w->repeat)
990	{	1199	{
991	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.));
		1201
992	((WT)w)->at = mn_now + w->repeat;	1202	((WT)w)->at += w->repeat;
		1203	if (((WT)w)->at < mn_now)
		1204	((WT)w)->at = mn_now;
		1205
993	downheap ((WT *)timers, timercnt, 0);	1206	downheap ((WT *)timers, timercnt, 0);
994	}	1207	}
995	else	1208	else
996	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1209	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
997		1210
998	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1211	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
999	}	1212	}
1000	}	1213	}
1001		1214
1002	static void	1215	#if EV_PERIODIC_ENABLE
		1216	void inline_size
1003	periodics_reify (EV_P)	1217	periodics_reify (EV_P)
1004	{	1218	{
1005	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1219	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1006	{	1220	{
1007	struct ev_periodic *w = periodics [0];	1221	ev_periodic *w = periodics [0];
1008		1222
1009	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1223	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1010		1224
1011	/* first reschedule or stop timer */	1225	/* first reschedule or stop timer */
1012	if (w->reschedule_cb)	1226	if (w->reschedule_cb)
1013	{	1227	{
1014	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);
1015
1016	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));
1017	downheap ((WT *)periodics, periodiccnt, 0);	1230	downheap ((WT *)periodics, periodiccnt, 0);
1018	}	1231	}
1019	else if (w->interval)	1232	else if (w->interval)
1020	{	1233	{
…		…
1027		1240
1028	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1241	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1029	}	1242	}
1030	}	1243	}
1031		1244
1032	static void	1245	static void noinline
1033	periodics_reschedule (EV_P)	1246	periodics_reschedule (EV_P)
1034	{	1247	{
1035	int i;	1248	int i;
1036		1249
1037	/* adjust periodics after time jump */	1250	/* adjust periodics after time jump */
1038	for (i = 0; i < periodiccnt; ++i)	1251	for (i = 0; i < periodiccnt; ++i)
1039	{	1252	{
1040	struct ev_periodic *w = periodics [i];	1253	ev_periodic *w = periodics [i];
1041		1254
1042	if (w->reschedule_cb)	1255	if (w->reschedule_cb)
1043	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1256	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1044	else if (w->interval)	1257	else if (w->interval)
1045	((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;
…		…
1047		1260
1048	/* now rebuild the heap */	1261	/* now rebuild the heap */
1049	for (i = periodiccnt >> 1; i--; )	1262	for (i = periodiccnt >> 1; i--; )
1050	downheap ((WT *)periodics, periodiccnt, i);	1263	downheap ((WT *)periodics, periodiccnt, i);
1051	}	1264	}
		1265	#endif
1052		1266
1053	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
1054	time_update_monotonic (EV_P)	1291	time_update_monotonic (EV_P)
1055	{	1292	{
1056	mn_now = get_clock ();	1293	mn_now = get_clock ();
1057		1294
1058	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1295	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
…		…
1066	ev_rt_now = ev_time ();	1303	ev_rt_now = ev_time ();
1067	return 1;	1304	return 1;
1068	}	1305	}
1069	}	1306	}
1070		1307
1071	static void	1308	void inline_size
1072	time_update (EV_P)	1309	time_update (EV_P)
1073	{	1310	{
1074	int i;	1311	int i;
1075		1312
1076	#if EV_USE_MONOTONIC	1313	#if EV_USE_MONOTONIC
…		…
1078	{	1315	{
1079	if (time_update_monotonic (EV_A))	1316	if (time_update_monotonic (EV_A))
1080	{	1317	{
1081	ev_tstamp odiff = rtmn_diff;	1318	ev_tstamp odiff = rtmn_diff;
1082		1319
1083	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; )
1084	{	1329	{
1085	rtmn_diff = ev_rt_now - mn_now;	1330	rtmn_diff = ev_rt_now - mn_now;
1086		1331
1087	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1332	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1088	return; /* all is well */	1333	return; /* all is well */
…		…
1090	ev_rt_now = ev_time ();	1335	ev_rt_now = ev_time ();
1091	mn_now = get_clock ();	1336	mn_now = get_clock ();
1092	now_floor = mn_now;	1337	now_floor = mn_now;
1093	}	1338	}
1094		1339
		1340	# if EV_PERIODIC_ENABLE
1095	periodics_reschedule (EV_A);	1341	periodics_reschedule (EV_A);
		1342	# endif
1096	/* no timer adjustment, as the monotonic clock doesn't jump */	1343	/* no timer adjustment, as the monotonic clock doesn't jump */
1097	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1344	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1098	}	1345	}
1099	}	1346	}
1100	else	1347	else
…		…
1102	{	1349	{
1103	ev_rt_now = ev_time ();	1350	ev_rt_now = ev_time ();
1104		1351
1105	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))
1106	{	1353	{
		1354	#if EV_PERIODIC_ENABLE
1107	periodics_reschedule (EV_A);	1355	periodics_reschedule (EV_A);
		1356	#endif
1108		1357
1109	/* 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 */
1110	for (i = 0; i < timercnt; ++i)	1359	for (i = 0; i < timercnt; ++i)
1111	((WT)timers [i])->at += ev_rt_now - mn_now;	1360	((WT)timers [i])->at += ev_rt_now - mn_now;
1112	}	1361	}
1113		1362
1114	mn_now = ev_rt_now;	1363	mn_now = ev_rt_now;
…		…
1130	static int loop_done;	1379	static int loop_done;
1131		1380
1132	void	1381	void
1133	ev_loop (EV_P_ int flags)	1382	ev_loop (EV_P_ int flags)
1134	{	1383	{
1135	double block;
1136	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 */
1137		1389
1138	do	1390	do
1139	{	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
1140	/* queue check watchers (and execute them) */	1411	/* queue check watchers (and execute them) */
1141	if (expect_false (preparecnt))	1412	if (expect_false (preparecnt))
1142	{	1413	{
1143	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1414	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1144	call_pending (EV_A);	1415	call_pending (EV_A);
1145	}	1416	}
1146		1417
		1418	if (expect_false (!activecnt))
		1419	break;
		1420
1147	/* we might have forked, so reify kernel state if necessary */	1421	/* we might have forked, so reify kernel state if necessary */
1148	if (expect_false (postfork))	1422	if (expect_false (postfork))
1149	loop_fork (EV_A);	1423	loop_fork (EV_A);
1150		1424
1151	/* update fd-related kernel structures */	1425	/* update fd-related kernel structures */
1152	fd_reify (EV_A);	1426	fd_reify (EV_A);
1153		1427
1154	/* calculate blocking time */	1428	/* calculate blocking time */
		1429	{
		1430	ev_tstamp block;
1155		1431
1156	/* we only need this for !monotonic clock or timers, but as we basically	1432	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1157	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 */
1158	#if EV_USE_MONOTONIC	1437	#if EV_USE_MONOTONIC
1159	if (expect_true (have_monotonic))	1438	if (expect_true (have_monotonic))
1160	time_update_monotonic (EV_A);	1439	time_update_monotonic (EV_A);
1161	else	1440	else
1162	#endif	1441	#endif
1163	{	1442	{
1164	ev_rt_now = ev_time ();	1443	ev_rt_now = ev_time ();
1165	mn_now = ev_rt_now;	1444	mn_now = ev_rt_now;
1166	}	1445	}
1167		1446
1168	if (flags & EVLOOP_NONBLOCK || idlecnt)
1169	block = 0.;
1170	else
1171	{
1172	block = MAX_BLOCKTIME;	1447	block = MAX_BLOCKTIME;
1173		1448
1174	if (timercnt)	1449	if (timercnt)
1175	{	1450	{
1176	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1451	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1177	if (block > to) block = to;	1452	if (block > to) block = to;
1178	}	1453	}
1179		1454
		1455	#if EV_PERIODIC_ENABLE
1180	if (periodiccnt)	1456	if (periodiccnt)
1181	{	1457	{
1182	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;
1183	if (block > to) block = to;	1459	if (block > to) block = to;
1184	}	1460	}
		1461	#endif
1185		1462
1186	if (block < 0.) block = 0.;	1463	if (expect_false (block < 0.)) block = 0.;
1187	}	1464	}
1188		1465
		1466	++loop_count;
1189	method_poll (EV_A_ block);	1467	backend_poll (EV_A_ block);
		1468	}
1190		1469
1191	/* update ev_rt_now, do magic */	1470	/* update ev_rt_now, do magic */
1192	time_update (EV_A);	1471	time_update (EV_A);
1193		1472
1194	/* queue pending timers and reschedule them */	1473	/* queue pending timers and reschedule them */
1195	timers_reify (EV_A); /* relative timers called last */	1474	timers_reify (EV_A); /* relative timers called last */
		1475	#if EV_PERIODIC_ENABLE
1196	periodics_reify (EV_A); /* absolute timers called first */	1476	periodics_reify (EV_A); /* absolute timers called first */
		1477	#endif
1197		1478
		1479	#if EV_IDLE_ENABLE
1198	/* queue idle watchers unless io or timers are pending */	1480	/* queue idle watchers unless other events are pending */
1199	if (idlecnt && !any_pending (EV_A))	1481	idle_reify (EV_A);
1200	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1482	#endif
1201		1483
1202	/* queue check watchers, to be executed first */	1484	/* queue check watchers, to be executed first */
1203	if (checkcnt)	1485	if (expect_false (checkcnt))
1204	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1486	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1205		1487
1206	call_pending (EV_A);	1488	call_pending (EV_A);
		1489
1207	}	1490	}
1208	while (activecnt && !loop_done);	1491	while (expect_true (activecnt && !loop_done));
1209		1492
1210	if (loop_done != 2)	1493	if (loop_done == EVUNLOOP_ONE)
1211	loop_done = 0;	1494	loop_done = EVUNLOOP_CANCEL;
1212	}	1495	}
1213		1496
1214	void	1497	void
1215	ev_unloop (EV_P_ int how)	1498	ev_unloop (EV_P_ int how)
1216	{	1499	{
1217	loop_done = how;	1500	loop_done = how;
1218	}	1501	}
1219		1502
1220	/*****************************************************************************/	1503	/*****************************************************************************/
1221		1504
1222	inline void	1505	void inline_size
1223	wlist_add (WL *head, WL elem)	1506	wlist_add (WL *head, WL elem)
1224	{	1507	{
1225	elem->next = *head;	1508	elem->next = *head;
1226	*head = elem;	1509	*head = elem;
1227	}	1510	}
1228		1511
1229	inline void	1512	void inline_size
1230	wlist_del (WL *head, WL elem)	1513	wlist_del (WL *head, WL elem)
1231	{	1514	{
1232	while (*head)	1515	while (*head)
1233	{	1516	{
1234	if (*head == elem)	1517	if (*head == elem)
…		…
1239		1522
1240	head = &(*head)->next;	1523	head = &(*head)->next;
1241	}	1524	}
1242	}	1525	}
1243		1526
1244	inline void	1527	void inline_speed
1245	ev_clear_pending (EV_P_ W w)	1528	ev_clear_pending (EV_P_ W w)
1246	{	1529	{
1247	if (w->pending)	1530	if (w->pending)
1248	{	1531	{
1249	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1532	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1250	w->pending = 0;	1533	w->pending = 0;
1251	}	1534	}
1252	}	1535	}
1253		1536
1254	inline void	1537	void inline_size
		1538	pri_adjust (EV_P_ W w)
		1539	{
		1540	int pri = w->priority;
		1541	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1542	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1543	w->priority = pri;
		1544	}
		1545
		1546	void inline_speed
1255	ev_start (EV_P_ W w, int active)	1547	ev_start (EV_P_ W w, int active)
1256	{	1548	{
1257	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1549	pri_adjust (EV_A_ w);
1258	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1259
1260	w->active = active;	1550	w->active = active;
1261	ev_ref (EV_A);	1551	ev_ref (EV_A);
1262	}	1552	}
1263		1553
1264	inline void	1554	void inline_size
1265	ev_stop (EV_P_ W w)	1555	ev_stop (EV_P_ W w)
1266	{	1556	{
1267	ev_unref (EV_A);	1557	ev_unref (EV_A);
1268	w->active = 0;	1558	w->active = 0;
1269	}	1559	}
1270		1560
1271	/*****************************************************************************/	1561	/*****************************************************************************/
1272		1562
1273	void	1563	void
1274	ev_io_start (EV_P_ struct ev_io *w)	1564	ev_io_start (EV_P_ ev_io *w)
1275	{	1565	{
1276	int fd = w->fd;	1566	int fd = w->fd;
1277		1567
1278	if (ev_is_active (w))	1568	if (expect_false (ev_is_active (w)))
1279	return;	1569	return;
1280		1570
1281	assert (("ev_io_start called with negative fd", fd >= 0));	1571	assert (("ev_io_start called with negative fd", fd >= 0));
1282		1572
1283	ev_start (EV_A_ (W)w, 1);	1573	ev_start (EV_A_ (W)w, 1);
…		…
1286		1576
1287	fd_change (EV_A_ fd);	1577	fd_change (EV_A_ fd);
1288	}	1578	}
1289		1579
1290	void	1580	void
1291	ev_io_stop (EV_P_ struct ev_io *w)	1581	ev_io_stop (EV_P_ ev_io *w)
1292	{	1582	{
1293	ev_clear_pending (EV_A_ (W)w);	1583	ev_clear_pending (EV_A_ (W)w);
1294	if (!ev_is_active (w))	1584	if (expect_false (!ev_is_active (w)))
1295	return;	1585	return;
1296		1586
1297	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1587	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1298		1588
1299	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1589	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
…		…
1301		1591
1302	fd_change (EV_A_ w->fd);	1592	fd_change (EV_A_ w->fd);
1303	}	1593	}
1304		1594
1305	void	1595	void
1306	ev_timer_start (EV_P_ struct ev_timer *w)	1596	ev_timer_start (EV_P_ ev_timer *w)
1307	{	1597	{
1308	if (ev_is_active (w))	1598	if (expect_false (ev_is_active (w)))
1309	return;	1599	return;
1310		1600
1311	((WT)w)->at += mn_now;	1601	((WT)w)->at += mn_now;
1312		1602
1313	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1603	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1314		1604
1315	ev_start (EV_A_ (W)w, ++timercnt);	1605	ev_start (EV_A_ (W)w, ++timercnt);
1316	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));	1606	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1317	timers [timercnt - 1] = w;	1607	timers [timercnt - 1] = w;
1318	upheap ((WT *)timers, timercnt - 1);	1608	upheap ((WT *)timers, timercnt - 1);
1319		1609
		1610	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1611	}
		1612
		1613	void
		1614	ev_timer_stop (EV_P_ ev_timer *w)
		1615	{
		1616	ev_clear_pending (EV_A_ (W)w);
		1617	if (expect_false (!ev_is_active (w)))
		1618	return;
		1619
1320	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1620	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1321	}
1322		1621
1323	void	1622	{
1324	ev_timer_stop (EV_P_ struct ev_timer *w)	1623	int active = ((W)w)->active;
1325	{
1326	ev_clear_pending (EV_A_ (W)w);
1327	if (!ev_is_active (w))
1328	return;
1329		1624
1330	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1625	if (expect_true (--active < --timercnt))
1331
1332	if (((W)w)->active < timercnt--)
1333	{	1626	{
1334	timers [((W)w)->active - 1] = timers [timercnt];	1627	timers [active] = timers [timercnt];
1335	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1628	adjustheap ((WT *)timers, timercnt, active);
1336	}	1629	}
		1630	}
1337		1631
1338	((WT)w)->at = w->repeat;	1632	((WT)w)->at -= mn_now;
1339		1633
1340	ev_stop (EV_A_ (W)w);	1634	ev_stop (EV_A_ (W)w);
1341	}	1635	}
1342		1636
1343	void	1637	void
1344	ev_timer_again (EV_P_ struct ev_timer *w)	1638	ev_timer_again (EV_P_ ev_timer *w)
1345	{	1639	{
1346	if (ev_is_active (w))	1640	if (ev_is_active (w))
1347	{	1641	{
1348	if (w->repeat)	1642	if (w->repeat)
		1643	{
		1644	((WT)w)->at = mn_now + w->repeat;
1349	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);	1645	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
		1646	}
1350	else	1647	else
1351	ev_timer_stop (EV_A_ w);	1648	ev_timer_stop (EV_A_ w);
1352	}	1649	}
1353	else if (w->repeat)	1650	else if (w->repeat)
		1651	{
		1652	w->at = w->repeat;
1354	ev_timer_start (EV_A_ w);	1653	ev_timer_start (EV_A_ w);
		1654	}
1355	}	1655	}
1356		1656
		1657	#if EV_PERIODIC_ENABLE
1357	void	1658	void
1358	ev_periodic_start (EV_P_ struct ev_periodic *w)	1659	ev_periodic_start (EV_P_ ev_periodic *w)
1359	{	1660	{
1360	if (ev_is_active (w))	1661	if (expect_false (ev_is_active (w)))
1361	return;	1662	return;
1362		1663
1363	if (w->reschedule_cb)	1664	if (w->reschedule_cb)
1364	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1665	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1365	else if (w->interval)	1666	else if (w->interval)
…		…
1368	/* this formula differs from the one in periodic_reify because we do not always round up */	1669	/* this formula differs from the one in periodic_reify because we do not always round up */
1369	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1670	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1370	}	1671	}
1371		1672
1372	ev_start (EV_A_ (W)w, ++periodiccnt);	1673	ev_start (EV_A_ (W)w, ++periodiccnt);
1373	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));	1674	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1374	periodics [periodiccnt - 1] = w;	1675	periodics [periodiccnt - 1] = w;
1375	upheap ((WT *)periodics, periodiccnt - 1);	1676	upheap ((WT *)periodics, periodiccnt - 1);
1376		1677
		1678	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1679	}
		1680
		1681	void
		1682	ev_periodic_stop (EV_P_ ev_periodic *w)
		1683	{
		1684	ev_clear_pending (EV_A_ (W)w);
		1685	if (expect_false (!ev_is_active (w)))
		1686	return;
		1687
1377	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1688	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1378	}
1379		1689
1380	void	1690	{
1381	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1691	int active = ((W)w)->active;
1382	{
1383	ev_clear_pending (EV_A_ (W)w);
1384	if (!ev_is_active (w))
1385	return;
1386		1692
1387	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1693	if (expect_true (--active < --periodiccnt))
1388
1389	if (((W)w)->active < periodiccnt--)
1390	{	1694	{
1391	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1695	periodics [active] = periodics [periodiccnt];
1392	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1696	adjustheap ((WT *)periodics, periodiccnt, active);
1393	}	1697	}
		1698	}
1394		1699
1395	ev_stop (EV_A_ (W)w);	1700	ev_stop (EV_A_ (W)w);
1396	}	1701	}
1397		1702
1398	void	1703	void
1399	ev_periodic_again (EV_P_ struct ev_periodic *w)	1704	ev_periodic_again (EV_P_ ev_periodic *w)
1400	{	1705	{
1401	/* TODO: use adjustheap and recalculation */	1706	/* TODO: use adjustheap and recalculation */
1402	ev_periodic_stop (EV_A_ w);	1707	ev_periodic_stop (EV_A_ w);
1403	ev_periodic_start (EV_A_ w);	1708	ev_periodic_start (EV_A_ w);
1404	}	1709	}
1405		1710	#endif
1406	void
1407	ev_idle_start (EV_P_ struct ev_idle *w)
1408	{
1409	if (ev_is_active (w))
1410	return;
1411
1412	ev_start (EV_A_ (W)w, ++idlecnt);
1413	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
1414	idles [idlecnt - 1] = w;
1415	}
1416
1417	void
1418	ev_idle_stop (EV_P_ struct ev_idle *w)
1419	{
1420	ev_clear_pending (EV_A_ (W)w);
1421	if (ev_is_active (w))
1422	return;
1423
1424	idles [((W)w)->active - 1] = idles [--idlecnt];
1425	ev_stop (EV_A_ (W)w);
1426	}
1427
1428	void
1429	ev_prepare_start (EV_P_ struct ev_prepare *w)
1430	{
1431	if (ev_is_active (w))
1432	return;
1433
1434	ev_start (EV_A_ (W)w, ++preparecnt);
1435	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
1436	prepares [preparecnt - 1] = w;
1437	}
1438
1439	void
1440	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1441	{
1442	ev_clear_pending (EV_A_ (W)w);
1443	if (ev_is_active (w))
1444	return;
1445
1446	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1447	ev_stop (EV_A_ (W)w);
1448	}
1449
1450	void
1451	ev_check_start (EV_P_ struct ev_check *w)
1452	{
1453	if (ev_is_active (w))
1454	return;
1455
1456	ev_start (EV_A_ (W)w, ++checkcnt);
1457	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
1458	checks [checkcnt - 1] = w;
1459	}
1460
1461	void
1462	ev_check_stop (EV_P_ struct ev_check *w)
1463	{
1464	ev_clear_pending (EV_A_ (W)w);
1465	if (ev_is_active (w))
1466	return;
1467
1468	checks [((W)w)->active - 1] = checks [--checkcnt];
1469	ev_stop (EV_A_ (W)w);
1470	}
1471		1711
1472	#ifndef SA_RESTART	1712	#ifndef SA_RESTART
1473	# define SA_RESTART 0	1713	# define SA_RESTART 0
1474	#endif	1714	#endif
1475		1715
1476	void	1716	void
1477	ev_signal_start (EV_P_ struct ev_signal *w)	1717	ev_signal_start (EV_P_ ev_signal *w)
1478	{	1718	{
1479	#if EV_MULTIPLICITY	1719	#if EV_MULTIPLICITY
1480	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1720	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1481	#endif	1721	#endif
1482	if (ev_is_active (w))	1722	if (expect_false (ev_is_active (w)))
1483	return;	1723	return;
1484		1724
1485	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1725	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1486		1726
1487	ev_start (EV_A_ (W)w, 1);	1727	ev_start (EV_A_ (W)w, 1);
1488	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	1728	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1489	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1729	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1490		1730
1491	if (!((WL)w)->next)	1731	if (!((WL)w)->next)
1492	{	1732	{
1493	#if WIN32	1733	#if _WIN32
1494	signal (w->signum, sighandler);	1734	signal (w->signum, sighandler);
1495	#else	1735	#else
1496	struct sigaction sa;	1736	struct sigaction sa;
1497	sa.sa_handler = sighandler;	1737	sa.sa_handler = sighandler;
1498	sigfillset (&sa.sa_mask);	1738	sigfillset (&sa.sa_mask);
…		…
1501	#endif	1741	#endif
1502	}	1742	}
1503	}	1743	}
1504		1744
1505	void	1745	void
1506	ev_signal_stop (EV_P_ struct ev_signal *w)	1746	ev_signal_stop (EV_P_ ev_signal *w)
1507	{	1747	{
1508	ev_clear_pending (EV_A_ (W)w);	1748	ev_clear_pending (EV_A_ (W)w);
1509	if (!ev_is_active (w))	1749	if (expect_false (!ev_is_active (w)))
1510	return;	1750	return;
1511		1751
1512	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1752	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1513	ev_stop (EV_A_ (W)w);	1753	ev_stop (EV_A_ (W)w);
1514		1754
1515	if (!signals [w->signum - 1].head)	1755	if (!signals [w->signum - 1].head)
1516	signal (w->signum, SIG_DFL);	1756	signal (w->signum, SIG_DFL);
1517	}	1757	}
1518		1758
1519	void	1759	void
1520	ev_child_start (EV_P_ struct ev_child *w)	1760	ev_child_start (EV_P_ ev_child *w)
1521	{	1761	{
1522	#if EV_MULTIPLICITY	1762	#if EV_MULTIPLICITY
1523	assert (("child watchers are only supported in the default loop", loop == default_loop));	1763	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1524	#endif	1764	#endif
1525	if (ev_is_active (w))	1765	if (expect_false (ev_is_active (w)))
1526	return;	1766	return;
1527		1767
1528	ev_start (EV_A_ (W)w, 1);	1768	ev_start (EV_A_ (W)w, 1);
1529	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1769	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1530	}	1770	}
1531		1771
1532	void	1772	void
1533	ev_child_stop (EV_P_ struct ev_child *w)	1773	ev_child_stop (EV_P_ ev_child *w)
1534	{	1774	{
1535	ev_clear_pending (EV_A_ (W)w);	1775	ev_clear_pending (EV_A_ (W)w);
1536	if (ev_is_active (w))	1776	if (expect_false (!ev_is_active (w)))
1537	return;	1777	return;
1538		1778
1539	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1779	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1540	ev_stop (EV_A_ (W)w);	1780	ev_stop (EV_A_ (W)w);
1541	}	1781	}
1542		1782
		1783	#if EV_STAT_ENABLE
		1784
		1785	# ifdef _WIN32
		1786	# undef lstat
		1787	# define lstat(a,b) _stati64 (a,b)
		1788	# endif
		1789
		1790	#define DEF_STAT_INTERVAL 5.0074891
		1791	#define MIN_STAT_INTERVAL 0.1074891
		1792
		1793	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1794
		1795	#if EV_USE_INOTIFY
		1796	# define EV_INOTIFY_BUFSIZE 8192
		1797
		1798	static void noinline
		1799	infy_add (EV_P_ ev_stat *w)
		1800	{
		1801	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);
		1802
		1803	if (w->wd < 0)
		1804	{
		1805	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1806
		1807	/* monitor some parent directory for speedup hints */
		1808	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1809	{
		1810	char path [4096];
		1811	strcpy (path, w->path);
		1812
		1813	do
		1814	{
		1815	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1816	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1817
		1818	char *pend = strrchr (path, '/');
		1819
		1820	if (!pend)
		1821	break; /* whoops, no '/', complain to your admin */
		1822
		1823	*pend = 0;
		1824	w->wd = inotify_add_watch (fs_fd, path, mask);
		1825	}
		1826	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1827	}
		1828	}
		1829	else
		1830	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1831
		1832	if (w->wd >= 0)
		1833	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1834	}
		1835
		1836	static void noinline
		1837	infy_del (EV_P_ ev_stat *w)
		1838	{
		1839	int slot;
		1840	int wd = w->wd;
		1841
		1842	if (wd < 0)
		1843	return;
		1844
		1845	w->wd = -2;
		1846	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1847	wlist_del (&fs_hash [slot].head, (WL)w);
		1848
		1849	/* remove this watcher, if others are watching it, they will rearm */
		1850	inotify_rm_watch (fs_fd, wd);
		1851	}
		1852
		1853	static void noinline
		1854	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1855	{
		1856	if (slot < 0)
		1857	/* overflow, need to check for all hahs slots */
		1858	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1859	infy_wd (EV_A_ slot, wd, ev);
		1860	else
		1861	{
		1862	WL w_;
		1863
		1864	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1865	{
		1866	ev_stat *w = (ev_stat *)w_;
		1867	w_ = w_->next; /* lets us remove this watcher and all before it */
		1868
		1869	if (w->wd == wd || wd == -1)
		1870	{
		1871	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1872	{
		1873	w->wd = -1;
		1874	infy_add (EV_A_ w); /* re-add, no matter what */
		1875	}
		1876
		1877	stat_timer_cb (EV_A_ &w->timer, 0);
		1878	}
		1879	}
		1880	}
		1881	}
		1882
		1883	static void
		1884	infy_cb (EV_P_ ev_io *w, int revents)
		1885	{
		1886	char buf [EV_INOTIFY_BUFSIZE];
		1887	struct inotify_event *ev = (struct inotify_event *)buf;
		1888	int ofs;
		1889	int len = read (fs_fd, buf, sizeof (buf));
		1890
		1891	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1892	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1893	}
		1894
		1895	void inline_size
		1896	infy_init (EV_P)
		1897	{
		1898	if (fs_fd != -2)
		1899	return;
		1900
		1901	fs_fd = inotify_init ();
		1902
		1903	if (fs_fd >= 0)
		1904	{
		1905	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1906	ev_set_priority (&fs_w, EV_MAXPRI);
		1907	ev_io_start (EV_A_ &fs_w);
		1908	}
		1909	}
		1910
		1911	void inline_size
		1912	infy_fork (EV_P)
		1913	{
		1914	int slot;
		1915
		1916	if (fs_fd < 0)
		1917	return;
		1918
		1919	close (fs_fd);
		1920	fs_fd = inotify_init ();
		1921
		1922	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1923	{
		1924	WL w_ = fs_hash [slot].head;
		1925	fs_hash [slot].head = 0;
		1926
		1927	while (w_)
		1928	{
		1929	ev_stat *w = (ev_stat *)w_;
		1930	w_ = w_->next; /* lets us add this watcher */
		1931
		1932	w->wd = -1;
		1933
		1934	if (fs_fd >= 0)
		1935	infy_add (EV_A_ w); /* re-add, no matter what */
		1936	else
		1937	ev_timer_start (EV_A_ &w->timer);
		1938	}
		1939
		1940	}
		1941	}
		1942
		1943	#endif
		1944
		1945	void
		1946	ev_stat_stat (EV_P_ ev_stat *w)
		1947	{
		1948	if (lstat (w->path, &w->attr) < 0)
		1949	w->attr.st_nlink = 0;
		1950	else if (!w->attr.st_nlink)
		1951	w->attr.st_nlink = 1;
		1952	}
		1953
		1954	static void noinline
		1955	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1956	{
		1957	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1958
		1959	/* we copy this here each the time so that */
		1960	/* prev has the old value when the callback gets invoked */
		1961	w->prev = w->attr;
		1962	ev_stat_stat (EV_A_ w);
		1963
		1964	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1965	if (
		1966	w->prev.st_dev != w->attr.st_dev
		1967	|| w->prev.st_ino != w->attr.st_ino
		1968	|| w->prev.st_mode != w->attr.st_mode
		1969	|| w->prev.st_nlink != w->attr.st_nlink
		1970	|| w->prev.st_uid != w->attr.st_uid
		1971	|| w->prev.st_gid != w->attr.st_gid
		1972	|| w->prev.st_rdev != w->attr.st_rdev
		1973	|| w->prev.st_size != w->attr.st_size
		1974	|| w->prev.st_atime != w->attr.st_atime
		1975	|| w->prev.st_mtime != w->attr.st_mtime
		1976	|| w->prev.st_ctime != w->attr.st_ctime
		1977	) {
		1978	#if EV_USE_INOTIFY
		1979	infy_del (EV_A_ w);
		1980	infy_add (EV_A_ w);
		1981	ev_stat_stat (EV_A_ w); /* avoid race... */
		1982	#endif
		1983
		1984	ev_feed_event (EV_A_ w, EV_STAT);
		1985	}
		1986	}
		1987
		1988	void
		1989	ev_stat_start (EV_P_ ev_stat *w)
		1990	{
		1991	if (expect_false (ev_is_active (w)))
		1992	return;
		1993
		1994	/* since we use memcmp, we need to clear any padding data etc. */
		1995	memset (&w->prev, 0, sizeof (ev_statdata));
		1996	memset (&w->attr, 0, sizeof (ev_statdata));
		1997
		1998	ev_stat_stat (EV_A_ w);
		1999
		2000	if (w->interval < MIN_STAT_INTERVAL)
		2001	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2002
		2003	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2004	ev_set_priority (&w->timer, ev_priority (w));
		2005
		2006	#if EV_USE_INOTIFY
		2007	infy_init (EV_A);
		2008
		2009	if (fs_fd >= 0)
		2010	infy_add (EV_A_ w);
		2011	else
		2012	#endif
		2013	ev_timer_start (EV_A_ &w->timer);
		2014
		2015	ev_start (EV_A_ (W)w, 1);
		2016	}
		2017
		2018	void
		2019	ev_stat_stop (EV_P_ ev_stat *w)
		2020	{
		2021	ev_clear_pending (EV_A_ (W)w);
		2022	if (expect_false (!ev_is_active (w)))
		2023	return;
		2024
		2025	#if EV_USE_INOTIFY
		2026	infy_del (EV_A_ w);
		2027	#endif
		2028	ev_timer_stop (EV_A_ &w->timer);
		2029
		2030	ev_stop (EV_A_ (W)w);
		2031	}
		2032	#endif
		2033
		2034	#if EV_IDLE_ENABLE
		2035	void
		2036	ev_idle_start (EV_P_ ev_idle *w)
		2037	{
		2038	if (expect_false (ev_is_active (w)))
		2039	return;
		2040
		2041	pri_adjust (EV_A_ (W)w);
		2042
		2043	{
		2044	int active = ++idlecnt [ABSPRI (w)];
		2045
		2046	++idleall;
		2047	ev_start (EV_A_ (W)w, active);
		2048
		2049	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2050	idles [ABSPRI (w)][active - 1] = w;
		2051	}
		2052	}
		2053
		2054	void
		2055	ev_idle_stop (EV_P_ ev_idle *w)
		2056	{
		2057	ev_clear_pending (EV_A_ (W)w);
		2058	if (expect_false (!ev_is_active (w)))
		2059	return;
		2060
		2061	{
		2062	int active = ((W)w)->active;
		2063
		2064	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2065	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2066
		2067	ev_stop (EV_A_ (W)w);
		2068	--idleall;
		2069	}
		2070	}
		2071	#endif
		2072
		2073	void
		2074	ev_prepare_start (EV_P_ ev_prepare *w)
		2075	{
		2076	if (expect_false (ev_is_active (w)))
		2077	return;
		2078
		2079	ev_start (EV_A_ (W)w, ++preparecnt);
		2080	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2081	prepares [preparecnt - 1] = w;
		2082	}
		2083
		2084	void
		2085	ev_prepare_stop (EV_P_ ev_prepare *w)
		2086	{
		2087	ev_clear_pending (EV_A_ (W)w);
		2088	if (expect_false (!ev_is_active (w)))
		2089	return;
		2090
		2091	{
		2092	int active = ((W)w)->active;
		2093	prepares [active - 1] = prepares [--preparecnt];
		2094	((W)prepares [active - 1])->active = active;
		2095	}
		2096
		2097	ev_stop (EV_A_ (W)w);
		2098	}
		2099
		2100	void
		2101	ev_check_start (EV_P_ ev_check *w)
		2102	{
		2103	if (expect_false (ev_is_active (w)))
		2104	return;
		2105
		2106	ev_start (EV_A_ (W)w, ++checkcnt);
		2107	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2108	checks [checkcnt - 1] = w;
		2109	}
		2110
		2111	void
		2112	ev_check_stop (EV_P_ ev_check *w)
		2113	{
		2114	ev_clear_pending (EV_A_ (W)w);
		2115	if (expect_false (!ev_is_active (w)))
		2116	return;
		2117
		2118	{
		2119	int active = ((W)w)->active;
		2120	checks [active - 1] = checks [--checkcnt];
		2121	((W)checks [active - 1])->active = active;
		2122	}
		2123
		2124	ev_stop (EV_A_ (W)w);
		2125	}
		2126
		2127	#if EV_EMBED_ENABLE
		2128	void noinline
		2129	ev_embed_sweep (EV_P_ ev_embed *w)
		2130	{
		2131	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2132	}
		2133
		2134	static void
		2135	embed_cb (EV_P_ ev_io *io, int revents)
		2136	{
		2137	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2138
		2139	if (ev_cb (w))
		2140	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2141	else
		2142	ev_embed_sweep (loop, w);
		2143	}
		2144
		2145	void
		2146	ev_embed_start (EV_P_ ev_embed *w)
		2147	{
		2148	if (expect_false (ev_is_active (w)))
		2149	return;
		2150
		2151	{
		2152	struct ev_loop *loop = w->loop;
		2153	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2154	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2155	}
		2156
		2157	ev_set_priority (&w->io, ev_priority (w));
		2158	ev_io_start (EV_A_ &w->io);
		2159
		2160	ev_start (EV_A_ (W)w, 1);
		2161	}
		2162
		2163	void
		2164	ev_embed_stop (EV_P_ ev_embed *w)
		2165	{
		2166	ev_clear_pending (EV_A_ (W)w);
		2167	if (expect_false (!ev_is_active (w)))
		2168	return;
		2169
		2170	ev_io_stop (EV_A_ &w->io);
		2171
		2172	ev_stop (EV_A_ (W)w);
		2173	}
		2174	#endif
		2175
		2176	#if EV_FORK_ENABLE
		2177	void
		2178	ev_fork_start (EV_P_ ev_fork *w)
		2179	{
		2180	if (expect_false (ev_is_active (w)))
		2181	return;
		2182
		2183	ev_start (EV_A_ (W)w, ++forkcnt);
		2184	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2185	forks [forkcnt - 1] = w;
		2186	}
		2187
		2188	void
		2189	ev_fork_stop (EV_P_ ev_fork *w)
		2190	{
		2191	ev_clear_pending (EV_A_ (W)w);
		2192	if (expect_false (!ev_is_active (w)))
		2193	return;
		2194
		2195	{
		2196	int active = ((W)w)->active;
		2197	forks [active - 1] = forks [--forkcnt];
		2198	((W)forks [active - 1])->active = active;
		2199	}
		2200
		2201	ev_stop (EV_A_ (W)w);
		2202	}
		2203	#endif
		2204
1543	/*****************************************************************************/	2205	/*****************************************************************************/
1544		2206
1545	struct ev_once	2207	struct ev_once
1546	{	2208	{
1547	struct ev_io io;	2209	ev_io io;
1548	struct ev_timer to;	2210	ev_timer to;
1549	void (*cb)(int revents, void *arg);	2211	void (*cb)(int revents, void *arg);
1550	void *arg;	2212	void *arg;
1551	};	2213	};
1552		2214
1553	static void	2215	static void
…		…
1562		2224
1563	cb (revents, arg);	2225	cb (revents, arg);
1564	}	2226	}
1565		2227
1566	static void	2228	static void
1567	once_cb_io (EV_P_ struct ev_io *w, int revents)	2229	once_cb_io (EV_P_ ev_io *w, int revents)
1568	{	2230	{
1569	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2231	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1570	}	2232	}
1571		2233
1572	static void	2234	static void
1573	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2235	once_cb_to (EV_P_ ev_timer *w, int revents)
1574	{	2236	{
1575	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2237	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1576	}	2238	}
1577		2239
1578	void	2240	void
1579	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2241	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1580	{	2242	{
1581	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	2243	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1582		2244
1583	if (!once)	2245	if (expect_false (!once))
		2246	{
1584	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2247	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1585	else	2248	return;
1586	{	2249	}
		2250
1587	once->cb = cb;	2251	once->cb = cb;
1588	once->arg = arg;	2252	once->arg = arg;
1589		2253
1590	ev_init (&once->io, once_cb_io);	2254	ev_init (&once->io, once_cb_io);
1591	if (fd >= 0)	2255	if (fd >= 0)
1592	{	2256	{
1593	ev_io_set (&once->io, fd, events);	2257	ev_io_set (&once->io, fd, events);
1594	ev_io_start (EV_A_ &once->io);	2258	ev_io_start (EV_A_ &once->io);
1595	}	2259	}
1596		2260
1597	ev_init (&once->to, once_cb_to);	2261	ev_init (&once->to, once_cb_to);
1598	if (timeout >= 0.)	2262	if (timeout >= 0.)
1599	{	2263	{
1600	ev_timer_set (&once->to, timeout, 0.);	2264	ev_timer_set (&once->to, timeout, 0.);
1601	ev_timer_start (EV_A_ &once->to);	2265	ev_timer_start (EV_A_ &once->to);
1602	}
1603	}	2266	}
1604	}	2267	}
1605		2268
1606	#ifdef __cplusplus	2269	#ifdef __cplusplus
1607	}	2270	}

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