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Comparing libev/ev.c (file contents):
Revision 1.67 by root, Mon Nov 5 16:42:15 2007 UTC vs.
Revision 1.157 by root, Wed Nov 28 20:58:32 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
33		42
34	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
37	# endif	57	# endif
38		58
		59	# ifndef EV_USE_SELECT
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
40	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
41	# endif	65	# endif
42		66
		67	# ifndef EV_USE_POLL
43	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
44	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
45	# endif	73	# endif
46		74
		75	# ifndef EV_USE_EPOLL
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
49	# endif	81	# endif
50		82
		83	# ifndef EV_USE_KQUEUE
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
		97	# endif
		98
		99	# ifndef EV_USE_INOTIFY
		100	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		101	# define EV_USE_INOTIFY 1
		102	# else
		103	# define EV_USE_INOTIFY 0
		104	# endif
53	# endif	105	# endif
54		106
55	#endif	107	#endif
56		108
57	#include <math.h>	109	#include <math.h>
58	#include <stdlib.h>	110	#include <stdlib.h>
59	#include <unistd.h>
60	#include <fcntl.h>	111	#include <fcntl.h>
61	#include <signal.h>
62	#include <stddef.h>	112	#include <stddef.h>
63		113
64	#include <stdio.h>	114	#include <stdio.h>
65		115
66	#include <assert.h>	116	#include <assert.h>
67	#include <errno.h>	117	#include <errno.h>
68	#include <sys/types.h>	118	#include <sys/types.h>
		119	#include <time.h>
		120
		121	#include <signal.h>
		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
69	#ifndef WIN32	129	#ifndef _WIN32
		130	# include <sys/time.h>
70	# include <sys/wait.h>	131	# include <sys/wait.h>
		132	# include <unistd.h>
		133	#else
		134	# define WIN32_LEAN_AND_MEAN
		135	# include <windows.h>
		136	# ifndef EV_SELECT_IS_WINSOCKET
		137	# define EV_SELECT_IS_WINSOCKET 1
71	#endif	138	# endif
72	#include <sys/time.h>	139	#endif
73	#include <time.h>
74		140
75	/**/	141	/**/
76		142
77	#ifndef EV_USE_MONOTONIC	143	#ifndef EV_USE_MONOTONIC
78	# define EV_USE_MONOTONIC 1	144	# define EV_USE_MONOTONIC 0
		145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
79	#endif	149	#endif
80		150
81	#ifndef EV_USE_SELECT	151	#ifndef EV_USE_SELECT
82	# define EV_USE_SELECT 1	152	# define EV_USE_SELECT 1
83	#endif	153	#endif
84		154
85	#ifndef EV_USE_POLL	155	#ifndef EV_USE_POLL
86	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	156	# ifdef _WIN32
		157	# define EV_USE_POLL 0
		158	# else
		159	# define EV_USE_POLL 1
		160	# endif
87	#endif	161	#endif
88		162
89	#ifndef EV_USE_EPOLL	163	#ifndef EV_USE_EPOLL
90	# define EV_USE_EPOLL 0	164	# define EV_USE_EPOLL 0
91	#endif	165	#endif
92		166
93	#ifndef EV_USE_KQUEUE	167	#ifndef EV_USE_KQUEUE
94	# define EV_USE_KQUEUE 0	168	# define EV_USE_KQUEUE 0
95	#endif	169	#endif
96		170
		171	#ifndef EV_USE_PORT
		172	# define EV_USE_PORT 0
		173	#endif
		174
97	#ifndef EV_USE_WIN32	175	#ifndef EV_USE_INOTIFY
98	# ifdef WIN32	176	# define EV_USE_INOTIFY 0
99	# define EV_USE_WIN32 1	177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
100	# else	182	# else
101	# define EV_USE_WIN32 0	183	# define EV_PID_HASHSIZE 16
102	# endif	184	# endif
103	#endif	185	#endif
104		186
105	#ifndef EV_USE_REALTIME	187	#ifndef EV_INOTIFY_HASHSIZE
106	# define EV_USE_REALTIME 1	188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
107	#endif	193	#endif
108		194
109	/**/	195	/**/
110		196
111	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
…		…
116	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
117	# undef EV_USE_REALTIME	203	# undef EV_USE_REALTIME
118	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
119	#endif	205	#endif
120		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
121	/**/	219	/**/
122		220
123	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	221	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
124	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	222	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
125	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
126	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	223	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
127
128	#include "ev.h"
129		224
130	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
131	# 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
132	# 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
133	#else	235	#else
134	# define expect(expr,value) (expr)	236	# define expect(expr,value) (expr)
		237	# define inline_speed static
135	# define inline static	238	# define inline_size static
		239	# define noinline
136	#endif	240	#endif
137		241
138	#define expect_false(expr) expect ((expr) != 0, 0)	242	#define expect_false(expr) expect ((expr) != 0, 0)
139	#define expect_true(expr) expect ((expr) != 0, 1)	243	#define expect_true(expr) expect ((expr) != 0, 1)
140		244
141	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	246	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
143		247
		248	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		249	#define EMPTY2(a,b) /* used to suppress some warnings */
		250
144	typedef struct ev_watcher *W;	251	typedef ev_watcher *W;
145	typedef struct ev_watcher_list *WL;	252	typedef ev_watcher_list *WL;
146	typedef struct ev_watcher_time *WT;	253	typedef ev_watcher_time *WT;
147		254
148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149		256
150	#if WIN32	257	#ifdef _WIN32
151	/* note: the comment below could not be substantiated, but what would I care */	258	# include "ev_win32.c"
152	/* MSDN says this is required to handle SIGFPE */
153	volatile double SIGFPE_REQ = 0.0f;
154	#endif	259	#endif
155		260
156	/*****************************************************************************/	261	/*****************************************************************************/
157		262
		263	static void (*syserr_cb)(const char *msg);
		264
		265	void
		266	ev_set_syserr_cb (void (*cb)(const char *msg))
		267	{
		268	syserr_cb = cb;
		269	}
		270
		271	static void noinline
		272	syserr (const char *msg)
		273	{
		274	if (!msg)
		275	msg = "(libev) system error";
		276
		277	if (syserr_cb)
		278	syserr_cb (msg);
		279	else
		280	{
		281	perror (msg);
		282	abort ();
		283	}
		284	}
		285
		286	static void *(*alloc)(void *ptr, long size);
		287
		288	void
		289	ev_set_allocator (void *(*cb)(void *ptr, long size))
		290	{
		291	alloc = cb;
		292	}
		293
		294	inline_speed void *
		295	ev_realloc (void *ptr, long size)
		296	{
		297	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		298
		299	if (!ptr && size)
		300	{
		301	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		302	abort ();
		303	}
		304
		305	return ptr;
		306	}
		307
		308	#define ev_malloc(size) ev_realloc (0, (size))
		309	#define ev_free(ptr) ev_realloc ((ptr), 0)
		310
		311	/*****************************************************************************/
		312
158	typedef struct	313	typedef struct
159	{	314	{
160	struct ev_watcher_list *head;	315	WL head;
161	unsigned char events;	316	unsigned char events;
162	unsigned char reify;	317	unsigned char reify;
		318	#if EV_SELECT_IS_WINSOCKET
		319	SOCKET handle;
		320	#endif
163	} ANFD;	321	} ANFD;
164		322
165	typedef struct	323	typedef struct
166	{	324	{
167	W w;	325	W w;
168	int events;	326	int events;
169	} ANPENDING;	327	} ANPENDING;
170		328
		329	#if EV_USE_INOTIFY
		330	typedef struct
		331	{
		332	WL head;
		333	} ANFS;
		334	#endif
		335
171	#if EV_MULTIPLICITY	336	#if EV_MULTIPLICITY
172		337
173	struct ev_loop	338	struct ev_loop
174	{	339	{
		340	ev_tstamp ev_rt_now;
		341	#define ev_rt_now ((loop)->ev_rt_now)
175	# define VAR(name,decl) decl;	342	#define VAR(name,decl) decl;
176	# include "ev_vars.h"	343	#include "ev_vars.h"
177	};
178	# undef VAR	344	#undef VAR
		345	};
179	# include "ev_wrap.h"	346	#include "ev_wrap.h"
		347
		348	static struct ev_loop default_loop_struct;
		349	struct ev_loop *ev_default_loop_ptr;
180		350
181	#else	351	#else
182		352
		353	ev_tstamp ev_rt_now;
183	# define VAR(name,decl) static decl;	354	#define VAR(name,decl) static decl;
184	# include "ev_vars.h"	355	#include "ev_vars.h"
185	# undef VAR	356	#undef VAR
		357
		358	static int ev_default_loop_ptr;
186		359
187	#endif	360	#endif
188		361
189	/*****************************************************************************/	362	/*****************************************************************************/
190		363
191	inline ev_tstamp	364	ev_tstamp
192	ev_time (void)	365	ev_time (void)
193	{	366	{
194	#if EV_USE_REALTIME	367	#if EV_USE_REALTIME
195	struct timespec ts;	368	struct timespec ts;
196	clock_gettime (CLOCK_REALTIME, &ts);	369	clock_gettime (CLOCK_REALTIME, &ts);
…		…
200	gettimeofday (&tv, 0);	373	gettimeofday (&tv, 0);
201	return tv.tv_sec + tv.tv_usec * 1e-6;	374	return tv.tv_sec + tv.tv_usec * 1e-6;
202	#endif	375	#endif
203	}	376	}
204		377
205	inline ev_tstamp	378	ev_tstamp inline_size
206	get_clock (void)	379	get_clock (void)
207	{	380	{
208	#if EV_USE_MONOTONIC	381	#if EV_USE_MONOTONIC
209	if (expect_true (have_monotonic))	382	if (expect_true (have_monotonic))
210	{	383	{
…		…
215	#endif	388	#endif
216		389
217	return ev_time ();	390	return ev_time ();
218	}	391	}
219		392
		393	#if EV_MULTIPLICITY
220	ev_tstamp	394	ev_tstamp
221	ev_now (EV_P)	395	ev_now (EV_P)
222	{	396	{
223	return rt_now;	397	return ev_rt_now;
224	}	398	}
		399	#endif
225		400
226	#define array_roundsize(base,n) ((n) | 4 & ~3)	401	#define array_roundsize(type,n) (((n) | 4) & ~3)
227		402
228	#define array_needsize(base,cur,cnt,init) \	403	#define array_needsize(type,base,cur,cnt,init) \
229	if (expect_false ((cnt) > cur)) \	404	if (expect_false ((cnt) > cur)) \
230	{ \	405	{ \
231	int newcnt = cur; \	406	int newcnt = cur; \
232	do \	407	do \
233	{ \	408	{ \
234	newcnt = array_roundsize (base, newcnt << 1); \	409	newcnt = array_roundsize (type, newcnt << 1); \
235	} \	410	} \
236	while ((cnt) > newcnt); \	411	while ((cnt) > newcnt); \
237	\	412	\
238	base = realloc (base, sizeof (*base) * (newcnt)); \	413	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
239	init (base + cur, newcnt - cur); \	414	init (base + cur, newcnt - cur); \
240	cur = newcnt; \	415	cur = newcnt; \
241	}	416	}
242		417
243	#define array_slim(stem) \	418	#define array_slim(type,stem) \
244	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	419	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
245	{ \	420	{ \
246	stem ## max = array_roundsize (stem ## cnt >> 1); \	421	stem ## max = array_roundsize (stem ## cnt >> 1); \
247	base = realloc (base, sizeof (*base) * (stem ## max)); \	422	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
248	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	423	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
249	}	424	}
250		425
251	#define array_free(stem, idx) \	426	#define array_free(stem, idx) \
252	free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	427	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
253		428
254	/*****************************************************************************/	429	/*****************************************************************************/
255		430
256	static void	431	void noinline
		432	ev_feed_event (EV_P_ void *w, int revents)
		433	{
		434	W w_ = (W)w;
		435
		436	if (expect_false (w_->pending))
		437	{
		438	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		439	return;
		440	}
		441
		442	w_->pending = ++pendingcnt [ABSPRI (w_)];
		443	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		444	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		445	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		446	}
		447
		448	void inline_size
		449	queue_events (EV_P_ W *events, int eventcnt, int type)
		450	{
		451	int i;
		452
		453	for (i = 0; i < eventcnt; ++i)
		454	ev_feed_event (EV_A_ events [i], type);
		455	}
		456
		457	/*****************************************************************************/
		458
		459	void inline_size
257	anfds_init (ANFD *base, int count)	460	anfds_init (ANFD *base, int count)
258	{	461	{
259	while (count--)	462	while (count--)
260	{	463	{
261	base->head = 0;	464	base->head = 0;
…		…
264		467
265	++base;	468	++base;
266	}	469	}
267	}	470	}
268		471
269	static void	472	void inline_speed
270	event (EV_P_ W w, int events)
271	{
272	if (w->pending)
273	{
274	pendings [ABSPRI (w)][w->pending - 1].events |= events;
275	return;
276	}
277
278	w->pending = ++pendingcnt [ABSPRI (w)];
279	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
280	pendings [ABSPRI (w)][w->pending - 1].w = w;
281	pendings [ABSPRI (w)][w->pending - 1].events = events;
282	}
283
284	static void
285	queue_events (EV_P_ W *events, int eventcnt, int type)
286	{
287	int i;
288
289	for (i = 0; i < eventcnt; ++i)
290	event (EV_A_ events [i], type);
291	}
292
293	static void
294	fd_event (EV_P_ int fd, int events)	473	fd_event (EV_P_ int fd, int revents)
295	{	474	{
296	ANFD *anfd = anfds + fd;	475	ANFD *anfd = anfds + fd;
297	struct ev_io *w;	476	ev_io *w;
298		477
299	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	478	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
300	{	479	{
301	int ev = w->events & events;	480	int ev = w->events & revents;
302		481
303	if (ev)	482	if (ev)
304	event (EV_A_ (W)w, ev);	483	ev_feed_event (EV_A_ (W)w, ev);
305	}	484	}
306	}	485	}
307		486
308	/*****************************************************************************/	487	void
		488	ev_feed_fd_event (EV_P_ int fd, int revents)
		489	{
		490	fd_event (EV_A_ fd, revents);
		491	}
309		492
310	static void	493	void inline_size
311	fd_reify (EV_P)	494	fd_reify (EV_P)
312	{	495	{
313	int i;	496	int i;
314		497
315	for (i = 0; i < fdchangecnt; ++i)	498	for (i = 0; i < fdchangecnt; ++i)
316	{	499	{
317	int fd = fdchanges [i];	500	int fd = fdchanges [i];
318	ANFD *anfd = anfds + fd;	501	ANFD *anfd = anfds + fd;
319	struct ev_io *w;	502	ev_io *w;
320		503
321	int events = 0;	504	int events = 0;
322		505
323	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	506	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
324	events |= w->events;	507	events |= w->events;
325		508
		509	#if EV_SELECT_IS_WINSOCKET
		510	if (events)
		511	{
		512	unsigned long argp;
		513	anfd->handle = _get_osfhandle (fd);
		514	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		515	}
		516	#endif
		517
326	anfd->reify = 0;	518	anfd->reify = 0;
327		519
328	method_modify (EV_A_ fd, anfd->events, events);	520	backend_modify (EV_A_ fd, anfd->events, events);
329	anfd->events = events;	521	anfd->events = events;
330	}	522	}
331		523
332	fdchangecnt = 0;	524	fdchangecnt = 0;
333	}	525	}
334		526
335	static void	527	void inline_size
336	fd_change (EV_P_ int fd)	528	fd_change (EV_P_ int fd)
337	{	529	{
338	if (anfds [fd].reify || fdchangecnt < 0)	530	if (expect_false (anfds [fd].reify))
339	return;	531	return;
340		532
341	anfds [fd].reify = 1;	533	anfds [fd].reify = 1;
342		534
343	++fdchangecnt;	535	++fdchangecnt;
344	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	536	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
345	fdchanges [fdchangecnt - 1] = fd;	537	fdchanges [fdchangecnt - 1] = fd;
346	}	538	}
347		539
348	static void	540	void inline_speed
349	fd_kill (EV_P_ int fd)	541	fd_kill (EV_P_ int fd)
350	{	542	{
351	struct ev_io *w;	543	ev_io *w;
352		544
353	while ((w = (struct ev_io *)anfds [fd].head))	545	while ((w = (ev_io *)anfds [fd].head))
354	{	546	{
355	ev_io_stop (EV_A_ w);	547	ev_io_stop (EV_A_ w);
356	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	548	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
357	}	549	}
		550	}
		551
		552	int inline_size
		553	fd_valid (int fd)
		554	{
		555	#ifdef _WIN32
		556	return _get_osfhandle (fd) != -1;
		557	#else
		558	return fcntl (fd, F_GETFD) != -1;
		559	#endif
358	}	560	}
359		561
360	/* called on EBADF to verify fds */	562	/* called on EBADF to verify fds */
361	static void	563	static void noinline
362	fd_ebadf (EV_P)	564	fd_ebadf (EV_P)
363	{	565	{
364	int fd;	566	int fd;
365		567
366	for (fd = 0; fd < anfdmax; ++fd)	568	for (fd = 0; fd < anfdmax; ++fd)
367	if (anfds [fd].events)	569	if (anfds [fd].events)
368	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	570	if (!fd_valid (fd) == -1 && errno == EBADF)
369	fd_kill (EV_A_ fd);	571	fd_kill (EV_A_ fd);
370	}	572	}
371		573
372	/* called on ENOMEM in select/poll to kill some fds and retry */	574	/* called on ENOMEM in select/poll to kill some fds and retry */
373	static void	575	static void noinline
374	fd_enomem (EV_P)	576	fd_enomem (EV_P)
375	{	577	{
376	int fd;	578	int fd;
377		579
378	for (fd = anfdmax; fd--; )	580	for (fd = anfdmax; fd--; )
379	if (anfds [fd].events)	581	if (anfds [fd].events)
380	{	582	{
381	close (fd);
382	fd_kill (EV_A_ fd);	583	fd_kill (EV_A_ fd);
383	return;	584	return;
384	}	585	}
385	}	586	}
386		587
387	/* susually called after fork if method needs to re-arm all fds from scratch */	588	/* usually called after fork if backend needs to re-arm all fds from scratch */
388	static void	589	static void noinline
389	fd_rearm_all (EV_P)	590	fd_rearm_all (EV_P)
390	{	591	{
391	int fd;	592	int fd;
392		593
393	/* this should be highly optimised to not do anything but set a flag */
394	for (fd = 0; fd < anfdmax; ++fd)	594	for (fd = 0; fd < anfdmax; ++fd)
395	if (anfds [fd].events)	595	if (anfds [fd].events)
396	{	596	{
397	anfds [fd].events = 0;	597	anfds [fd].events = 0;
398	fd_change (EV_A_ fd);	598	fd_change (EV_A_ fd);
399	}	599	}
400	}	600	}
401		601
402	/*****************************************************************************/	602	/*****************************************************************************/
403		603
404	static void	604	void inline_speed
405	upheap (WT *heap, int k)	605	upheap (WT *heap, int k)
406	{	606	{
407	WT w = heap [k];	607	WT w = heap [k];
408		608
409	while (k && heap [k >> 1]->at > w->at)	609	while (k && heap [k >> 1]->at > w->at)
…		…
416	heap [k] = w;	616	heap [k] = w;
417	((W)heap [k])->active = k + 1;	617	((W)heap [k])->active = k + 1;
418		618
419	}	619	}
420		620
421	static void	621	void inline_speed
422	downheap (WT *heap, int N, int k)	622	downheap (WT *heap, int N, int k)
423	{	623	{
424	WT w = heap [k];	624	WT w = heap [k];
425		625
426	while (k < (N >> 1))	626	while (k < (N >> 1))
…		…
440		640
441	heap [k] = w;	641	heap [k] = w;
442	((W)heap [k])->active = k + 1;	642	((W)heap [k])->active = k + 1;
443	}	643	}
444		644
		645	void inline_size
		646	adjustheap (WT *heap, int N, int k)
		647	{
		648	upheap (heap, k);
		649	downheap (heap, N, k);
		650	}
		651
445	/*****************************************************************************/	652	/*****************************************************************************/
446		653
447	typedef struct	654	typedef struct
448	{	655	{
449	struct ev_watcher_list *head;	656	WL head;
450	sig_atomic_t volatile gotsig;	657	sig_atomic_t volatile gotsig;
451	} ANSIG;	658	} ANSIG;
452		659
453	static ANSIG *signals;	660	static ANSIG *signals;
454	static int signalmax;	661	static int signalmax;
455		662
456	static int sigpipe [2];	663	static int sigpipe [2];
457	static sig_atomic_t volatile gotsig;	664	static sig_atomic_t volatile gotsig;
458	static struct ev_io sigev;	665	static ev_io sigev;
459		666
460	static void	667	void inline_size
461	signals_init (ANSIG *base, int count)	668	signals_init (ANSIG *base, int count)
462	{	669	{
463	while (count--)	670	while (count--)
464	{	671	{
465	base->head = 0;	672	base->head = 0;
…		…
470	}	677	}
471		678
472	static void	679	static void
473	sighandler (int signum)	680	sighandler (int signum)
474	{	681	{
475	#if WIN32	682	#if _WIN32
476	signal (signum, sighandler);	683	signal (signum, sighandler);
477	#endif	684	#endif
478		685
479	signals [signum - 1].gotsig = 1;	686	signals [signum - 1].gotsig = 1;
480		687
…		…
485	write (sigpipe [1], &signum, 1);	692	write (sigpipe [1], &signum, 1);
486	errno = old_errno;	693	errno = old_errno;
487	}	694	}
488	}	695	}
489		696
		697	void noinline
		698	ev_feed_signal_event (EV_P_ int signum)
		699	{
		700	WL w;
		701
		702	#if EV_MULTIPLICITY
		703	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		704	#endif
		705
		706	--signum;
		707
		708	if (signum < 0 || signum >= signalmax)
		709	return;
		710
		711	signals [signum].gotsig = 0;
		712
		713	for (w = signals [signum].head; w; w = w->next)
		714	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		715	}
		716
490	static void	717	static void
491	sigcb (EV_P_ struct ev_io *iow, int revents)	718	sigcb (EV_P_ ev_io *iow, int revents)
492	{	719	{
493	struct ev_watcher_list *w;
494	int signum;	720	int signum;
495		721
496	read (sigpipe [0], &revents, 1);	722	read (sigpipe [0], &revents, 1);
497	gotsig = 0;	723	gotsig = 0;
498		724
499	for (signum = signalmax; signum--; )	725	for (signum = signalmax; signum--; )
500	if (signals [signum].gotsig)	726	if (signals [signum].gotsig)
501	{	727	ev_feed_signal_event (EV_A_ signum + 1);
502	signals [signum].gotsig = 0;
503
504	for (w = signals [signum].head; w; w = w->next)
505	event (EV_A_ (W)w, EV_SIGNAL);
506	}
507	}	728	}
508		729
509	static void	730	void inline_size
		731	fd_intern (int fd)
		732	{
		733	#ifdef _WIN32
		734	int arg = 1;
		735	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		736	#else
		737	fcntl (fd, F_SETFD, FD_CLOEXEC);
		738	fcntl (fd, F_SETFL, O_NONBLOCK);
		739	#endif
		740	}
		741
		742	static void noinline
510	siginit (EV_P)	743	siginit (EV_P)
511	{	744	{
512	#ifndef WIN32	745	fd_intern (sigpipe [0]);
513	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	746	fd_intern (sigpipe [1]);
514	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
515
516	/* rather than sort out wether we really need nb, set it */
517	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
518	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
519	#endif
520		747
521	ev_io_set (&sigev, sigpipe [0], EV_READ);	748	ev_io_set (&sigev, sigpipe [0], EV_READ);
522	ev_io_start (EV_A_ &sigev);	749	ev_io_start (EV_A_ &sigev);
523	ev_unref (EV_A); /* child watcher should not keep loop alive */	750	ev_unref (EV_A); /* child watcher should not keep loop alive */
524	}	751	}
525		752
526	/*****************************************************************************/	753	/*****************************************************************************/
527		754
		755	static ev_child *childs [EV_PID_HASHSIZE];
		756
528	#ifndef WIN32	757	#ifndef _WIN32
529		758
530	static struct ev_child *childs [PID_HASHSIZE];
531	static struct ev_signal childev;	759	static ev_signal childev;
532		760
533	#ifndef WCONTINUED	761	void inline_speed
534	# define WCONTINUED 0
535	#endif
536
537	static void
538	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	762	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
539	{	763	{
540	struct ev_child *w;	764	ev_child *w;
541		765
542	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	766	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
543	if (w->pid == pid || !w->pid)	767	if (w->pid == pid || !w->pid)
544	{	768	{
545	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	769	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
546	w->rpid = pid;	770	w->rpid = pid;
547	w->rstatus = status;	771	w->rstatus = status;
548	event (EV_A_ (W)w, EV_CHILD);	772	ev_feed_event (EV_A_ (W)w, EV_CHILD);
549	}	773	}
550	}	774	}
551		775
		776	#ifndef WCONTINUED
		777	# define WCONTINUED 0
		778	#endif
		779
552	static void	780	static void
553	childcb (EV_P_ struct ev_signal *sw, int revents)	781	childcb (EV_P_ ev_signal *sw, int revents)
554	{	782	{
555	int pid, status;	783	int pid, status;
556		784
		785	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
557	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	786	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
558	{	787	if (!WCONTINUED
		788	|| errno != EINVAL
		789	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		790	return;
		791
559	/* make sure we are called again until all childs have been reaped */	792	/* make sure we are called again until all childs have been reaped */
		793	/* we need to do it this way so that the callback gets called before we continue */
560	event (EV_A_ (W)sw, EV_SIGNAL);	794	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
561		795
562	child_reap (EV_A_ sw, pid, pid, status);	796	child_reap (EV_A_ sw, pid, pid, status);
		797	if (EV_PID_HASHSIZE > 1)
563	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	798	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
564	}
565	}	799	}
566		800
567	#endif	801	#endif
568		802
569	/*****************************************************************************/	803	/*****************************************************************************/
570		804
		805	#if EV_USE_PORT
		806	# include "ev_port.c"
		807	#endif
571	#if EV_USE_KQUEUE	808	#if EV_USE_KQUEUE
572	# include "ev_kqueue.c"	809	# include "ev_kqueue.c"
573	#endif	810	#endif
574	#if EV_USE_EPOLL	811	#if EV_USE_EPOLL
575	# include "ev_epoll.c"	812	# include "ev_epoll.c"
…		…
592	{	829	{
593	return EV_VERSION_MINOR;	830	return EV_VERSION_MINOR;
594	}	831	}
595		832
596	/* return true if we are running with elevated privileges and should ignore env variables */	833	/* return true if we are running with elevated privileges and should ignore env variables */
597	static int	834	int inline_size
598	enable_secure (void)	835	enable_secure (void)
599	{	836	{
600	#ifdef WIN32	837	#ifdef _WIN32
601	return 0;	838	return 0;
602	#else	839	#else
603	return getuid () != geteuid ()	840	return getuid () != geteuid ()
604	|| getgid () != getegid ();	841	|| getgid () != getegid ();
605	#endif	842	#endif
606	}	843	}
607		844
608	int	845	unsigned int
609	ev_method (EV_P)	846	ev_supported_backends (void)
610	{	847	{
611	return method;	848	unsigned int flags = 0;
612	}
613		849
614	static void	850	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
615	loop_init (EV_P_ int methods)	851	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		852	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		853	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		854	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		855
		856	return flags;
		857	}
		858
		859	unsigned int
		860	ev_recommended_backends (void)
616	{	861	{
617	if (!method)	862	unsigned int flags = ev_supported_backends ();
		863
		864	#ifndef __NetBSD__
		865	/* kqueue is borked on everything but netbsd apparently */
		866	/* it usually doesn't work correctly on anything but sockets and pipes */
		867	flags &= ~EVBACKEND_KQUEUE;
		868	#endif
		869	#ifdef __APPLE__
		870	// flags &= ~EVBACKEND_KQUEUE; for documentation
		871	flags &= ~EVBACKEND_POLL;
		872	#endif
		873
		874	return flags;
		875	}
		876
		877	unsigned int
		878	ev_embeddable_backends (void)
		879	{
		880	return EVBACKEND_EPOLL
		881	| EVBACKEND_KQUEUE
		882	| EVBACKEND_PORT;
		883	}
		884
		885	unsigned int
		886	ev_backend (EV_P)
		887	{
		888	return backend;
		889	}
		890
		891	static void noinline
		892	loop_init (EV_P_ unsigned int flags)
		893	{
		894	if (!backend)
618	{	895	{
619	#if EV_USE_MONOTONIC	896	#if EV_USE_MONOTONIC
620	{	897	{
621	struct timespec ts;	898	struct timespec ts;
622	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	899	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
623	have_monotonic = 1;	900	have_monotonic = 1;
624	}	901	}
625	#endif	902	#endif
626		903
627	rt_now = ev_time ();	904	ev_rt_now = ev_time ();
628	mn_now = get_clock ();	905	mn_now = get_clock ();
629	now_floor = mn_now;	906	now_floor = mn_now;
630	rtmn_diff = rt_now - mn_now;	907	rtmn_diff = ev_rt_now - mn_now;
631		908
632	if (methods == EVMETHOD_AUTO)	909	if (!(flags & EVFLAG_NOENV)
633	if (!enable_secure () && getenv ("LIBEV_METHODS"))	910	&& !enable_secure ()
		911	&& getenv ("LIBEV_FLAGS"))
634	methods = atoi (getenv ("LIBEV_METHODS"));	912	flags = atoi (getenv ("LIBEV_FLAGS"));
635	else
636	methods = EVMETHOD_ANY;
637		913
638	method = 0;	914	if (!(flags & 0x0000ffffUL))
		915	flags |= ev_recommended_backends ();
		916
		917	backend = 0;
		918	backend_fd = -1;
639	#if EV_USE_WIN32	919	#if EV_USE_INOTIFY
640	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	920	fs_fd = -2;
		921	#endif
		922
		923	#if EV_USE_PORT
		924	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
641	#endif	925	#endif
642	#if EV_USE_KQUEUE	926	#if EV_USE_KQUEUE
643	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	927	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
644	#endif	928	#endif
645	#if EV_USE_EPOLL	929	#if EV_USE_EPOLL
646	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	930	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
647	#endif	931	#endif
648	#if EV_USE_POLL	932	#if EV_USE_POLL
649	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	933	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
650	#endif	934	#endif
651	#if EV_USE_SELECT	935	#if EV_USE_SELECT
652	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	936	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
653	#endif	937	#endif
654	}
655	}
656		938
657	void	939	ev_init (&sigev, sigcb);
		940	ev_set_priority (&sigev, EV_MAXPRI);
		941	}
		942	}
		943
		944	static void noinline
658	loop_destroy (EV_P)	945	loop_destroy (EV_P)
659	{	946	{
660	int i;	947	int i;
661		948
662	#if EV_USE_WIN32	949	#if EV_USE_INOTIFY
663	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	950	if (fs_fd >= 0)
		951	close (fs_fd);
		952	#endif
		953
		954	if (backend_fd >= 0)
		955	close (backend_fd);
		956
		957	#if EV_USE_PORT
		958	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
664	#endif	959	#endif
665	#if EV_USE_KQUEUE	960	#if EV_USE_KQUEUE
666	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	961	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
667	#endif	962	#endif
668	#if EV_USE_EPOLL	963	#if EV_USE_EPOLL
669	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	964	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
670	#endif	965	#endif
671	#if EV_USE_POLL	966	#if EV_USE_POLL
672	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	967	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
673	#endif	968	#endif
674	#if EV_USE_SELECT	969	#if EV_USE_SELECT
675	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	970	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
676	#endif	971	#endif
677		972
678	for (i = NUMPRI; i--; )	973	for (i = NUMPRI; i--; )
679	array_free (pending, [i]);	974	array_free (pending, [i]);
680		975
		976	/* have to use the microsoft-never-gets-it-right macro */
681	array_free (fdchange, );	977	array_free (fdchange, EMPTY0);
682	array_free (timer, );	978	array_free (timer, EMPTY0);
		979	#if EV_PERIODIC_ENABLE
683	array_free (periodic, );	980	array_free (periodic, EMPTY0);
		981	#endif
684	array_free (idle, );	982	array_free (idle, EMPTY0);
685	array_free (prepare, );	983	array_free (prepare, EMPTY0);
686	array_free (check, );	984	array_free (check, EMPTY0);
687		985
688	method = 0;	986	backend = 0;
689	/*TODO*/
690	}	987	}
691		988
692	void	989	void inline_size infy_fork (EV_P);
		990
		991	void inline_size
693	loop_fork (EV_P)	992	loop_fork (EV_P)
694	{	993	{
695	/*TODO*/	994	#if EV_USE_PORT
		995	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		996	#endif
		997	#if EV_USE_KQUEUE
		998	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		999	#endif
696	#if EV_USE_EPOLL	1000	#if EV_USE_EPOLL
697	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1001	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
698	#endif	1002	#endif
699	#if EV_USE_KQUEUE	1003	#if EV_USE_INOTIFY
700	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1004	infy_fork (EV_A);
701	#endif	1005	#endif
		1006
		1007	if (ev_is_active (&sigev))
		1008	{
		1009	/* default loop */
		1010
		1011	ev_ref (EV_A);
		1012	ev_io_stop (EV_A_ &sigev);
		1013	close (sigpipe [0]);
		1014	close (sigpipe [1]);
		1015
		1016	while (pipe (sigpipe))
		1017	syserr ("(libev) error creating pipe");
		1018
		1019	siginit (EV_A);
		1020	}
		1021
		1022	postfork = 0;
702	}	1023	}
703		1024
704	#if EV_MULTIPLICITY	1025	#if EV_MULTIPLICITY
705	struct ev_loop *	1026	struct ev_loop *
706	ev_loop_new (int methods)	1027	ev_loop_new (unsigned int flags)
707	{	1028	{
708	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));	1029	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
709		1030
		1031	memset (loop, 0, sizeof (struct ev_loop));
		1032
710	loop_init (EV_A_ methods);	1033	loop_init (EV_A_ flags);
711		1034
712	if (ev_method (EV_A))	1035	if (ev_backend (EV_A))
713	return loop;	1036	return loop;
714		1037
715	return 0;	1038	return 0;
716	}	1039	}
717		1040
718	void	1041	void
719	ev_loop_destroy (EV_P)	1042	ev_loop_destroy (EV_P)
720	{	1043	{
721	loop_destroy (EV_A);	1044	loop_destroy (EV_A);
722	free (loop);	1045	ev_free (loop);
723	}	1046	}
724		1047
725	void	1048	void
726	ev_loop_fork (EV_P)	1049	ev_loop_fork (EV_P)
727	{	1050	{
728	loop_fork (EV_A);	1051	postfork = 1;
729	}	1052	}
730		1053
731	#endif	1054	#endif
732		1055
733	#if EV_MULTIPLICITY	1056	#if EV_MULTIPLICITY
734	struct ev_loop default_loop_struct;
735	static struct ev_loop *default_loop;
736
737	struct ev_loop *	1057	struct ev_loop *
		1058	ev_default_loop_init (unsigned int flags)
738	#else	1059	#else
739	static int default_loop;
740
741	int	1060	int
		1061	ev_default_loop (unsigned int flags)
742	#endif	1062	#endif
743	ev_default_loop (int methods)
744	{	1063	{
745	if (sigpipe [0] == sigpipe [1])	1064	if (sigpipe [0] == sigpipe [1])
746	if (pipe (sigpipe))	1065	if (pipe (sigpipe))
747	return 0;	1066	return 0;
748		1067
749	if (!default_loop)	1068	if (!ev_default_loop_ptr)
750	{	1069	{
751	#if EV_MULTIPLICITY	1070	#if EV_MULTIPLICITY
752	struct ev_loop *loop = default_loop = &default_loop_struct;	1071	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
753	#else	1072	#else
754	default_loop = 1;	1073	ev_default_loop_ptr = 1;
755	#endif	1074	#endif
756		1075
757	loop_init (EV_A_ methods);	1076	loop_init (EV_A_ flags);
758		1077
759	if (ev_method (EV_A))	1078	if (ev_backend (EV_A))
760	{	1079	{
761	ev_watcher_init (&sigev, sigcb);
762	ev_set_priority (&sigev, EV_MAXPRI);
763	siginit (EV_A);	1080	siginit (EV_A);
764		1081
765	#ifndef WIN32	1082	#ifndef _WIN32
766	ev_signal_init (&childev, childcb, SIGCHLD);	1083	ev_signal_init (&childev, childcb, SIGCHLD);
767	ev_set_priority (&childev, EV_MAXPRI);	1084	ev_set_priority (&childev, EV_MAXPRI);
768	ev_signal_start (EV_A_ &childev);	1085	ev_signal_start (EV_A_ &childev);
769	ev_unref (EV_A); /* child watcher should not keep loop alive */	1086	ev_unref (EV_A); /* child watcher should not keep loop alive */
770	#endif	1087	#endif
771	}	1088	}
772	else	1089	else
773	default_loop = 0;	1090	ev_default_loop_ptr = 0;
774	}	1091	}
775		1092
776	return default_loop;	1093	return ev_default_loop_ptr;
777	}	1094	}
778		1095
779	void	1096	void
780	ev_default_destroy (void)	1097	ev_default_destroy (void)
781	{	1098	{
782	#if EV_MULTIPLICITY	1099	#if EV_MULTIPLICITY
783	struct ev_loop *loop = default_loop;	1100	struct ev_loop *loop = ev_default_loop_ptr;
784	#endif	1101	#endif
785		1102
		1103	#ifndef _WIN32
786	ev_ref (EV_A); /* child watcher */	1104	ev_ref (EV_A); /* child watcher */
787	ev_signal_stop (EV_A_ &childev);	1105	ev_signal_stop (EV_A_ &childev);
		1106	#endif
788		1107
789	ev_ref (EV_A); /* signal watcher */	1108	ev_ref (EV_A); /* signal watcher */
790	ev_io_stop (EV_A_ &sigev);	1109	ev_io_stop (EV_A_ &sigev);
791		1110
792	close (sigpipe [0]); sigpipe [0] = 0;	1111	close (sigpipe [0]); sigpipe [0] = 0;
…		…
797		1116
798	void	1117	void
799	ev_default_fork (void)	1118	ev_default_fork (void)
800	{	1119	{
801	#if EV_MULTIPLICITY	1120	#if EV_MULTIPLICITY
802	struct ev_loop *loop = default_loop;	1121	struct ev_loop *loop = ev_default_loop_ptr;
803	#endif	1122	#endif
804		1123
805	loop_fork (EV_A);	1124	if (backend)
806		1125	postfork = 1;
807	ev_io_stop (EV_A_ &sigev);
808	close (sigpipe [0]);
809	close (sigpipe [1]);
810	pipe (sigpipe);
811
812	ev_ref (EV_A); /* signal watcher */
813	siginit (EV_A);
814	}	1126	}
815		1127
816	/*****************************************************************************/	1128	/*****************************************************************************/
817		1129
818	static void	1130	int inline_size
		1131	any_pending (EV_P)
		1132	{
		1133	int pri;
		1134
		1135	for (pri = NUMPRI; pri--; )
		1136	if (pendingcnt [pri])
		1137	return 1;
		1138
		1139	return 0;
		1140	}
		1141
		1142	void inline_speed
819	call_pending (EV_P)	1143	call_pending (EV_P)
820	{	1144	{
821	int pri;	1145	int pri;
822		1146
823	for (pri = NUMPRI; pri--; )	1147	for (pri = NUMPRI; pri--; )
824	while (pendingcnt [pri])	1148	while (pendingcnt [pri])
825	{	1149	{
826	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1150	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
827		1151
828	if (p->w)	1152	if (expect_true (p->w))
829	{	1153	{
		1154	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1155
830	p->w->pending = 0;	1156	p->w->pending = 0;
831	p->w->cb (EV_A_ p->w, p->events);	1157	EV_CB_INVOKE (p->w, p->events);
832	}	1158	}
833	}	1159	}
834	}	1160	}
835		1161
836	static void	1162	void inline_size
837	timers_reify (EV_P)	1163	timers_reify (EV_P)
838	{	1164	{
839	while (timercnt && ((WT)timers [0])->at <= mn_now)	1165	while (timercnt && ((WT)timers [0])->at <= mn_now)
840	{	1166	{
841	struct ev_timer *w = timers [0];	1167	ev_timer *w = timers [0];
842		1168
843	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1169	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
844		1170
845	/* first reschedule or stop timer */	1171	/* first reschedule or stop timer */
846	if (w->repeat)	1172	if (w->repeat)
847	{	1173	{
848	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1174	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1175
849	((WT)w)->at = mn_now + w->repeat;	1176	((WT)w)->at += w->repeat;
		1177	if (((WT)w)->at < mn_now)
		1178	((WT)w)->at = mn_now;
		1179
850	downheap ((WT *)timers, timercnt, 0);	1180	downheap ((WT *)timers, timercnt, 0);
851	}	1181	}
852	else	1182	else
853	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1183	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
854		1184
855	event (EV_A_ (W)w, EV_TIMEOUT);	1185	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
856	}	1186	}
857	}	1187	}
858		1188
859	static void	1189	#if EV_PERIODIC_ENABLE
		1190	void inline_size
860	periodics_reify (EV_P)	1191	periodics_reify (EV_P)
861	{	1192	{
862	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1193	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
863	{	1194	{
864	struct ev_periodic *w = periodics [0];	1195	ev_periodic *w = periodics [0];
865		1196
866	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1197	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
867		1198
868	/* first reschedule or stop timer */	1199	/* first reschedule or stop timer */
869	if (w->interval)	1200	if (w->reschedule_cb)
870	{	1201	{
		1202	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1203	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1204	downheap ((WT *)periodics, periodiccnt, 0);
		1205	}
		1206	else if (w->interval)
		1207	{
871	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1208	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
872	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1209	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
873	downheap ((WT *)periodics, periodiccnt, 0);	1210	downheap ((WT *)periodics, periodiccnt, 0);
874	}	1211	}
875	else	1212	else
876	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1213	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
877		1214
878	event (EV_A_ (W)w, EV_PERIODIC);	1215	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
879	}	1216	}
880	}	1217	}
881		1218
882	static void	1219	static void noinline
883	periodics_reschedule (EV_P)	1220	periodics_reschedule (EV_P)
884	{	1221	{
885	int i;	1222	int i;
886		1223
887	/* adjust periodics after time jump */	1224	/* adjust periodics after time jump */
888	for (i = 0; i < periodiccnt; ++i)	1225	for (i = 0; i < periodiccnt; ++i)
889	{	1226	{
890	struct ev_periodic *w = periodics [i];	1227	ev_periodic *w = periodics [i];
891		1228
		1229	if (w->reschedule_cb)
		1230	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
892	if (w->interval)	1231	else if (w->interval)
893	{
894	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1232	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
895
896	if (fabs (diff) >= 1e-4)
897	{
898	ev_periodic_stop (EV_A_ w);
899	ev_periodic_start (EV_A_ w);
900
901	i = 0; /* restart loop, inefficient, but time jumps should be rare */
902	}
903	}
904	}	1233	}
905	}
906		1234
907	inline int	1235	/* now rebuild the heap */
		1236	for (i = periodiccnt >> 1; i--; )
		1237	downheap ((WT *)periodics, periodiccnt, i);
		1238	}
		1239	#endif
		1240
		1241	int inline_size
908	time_update_monotonic (EV_P)	1242	time_update_monotonic (EV_P)
909	{	1243	{
910	mn_now = get_clock ();	1244	mn_now = get_clock ();
911		1245
912	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1246	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
913	{	1247	{
914	rt_now = rtmn_diff + mn_now;	1248	ev_rt_now = rtmn_diff + mn_now;
915	return 0;	1249	return 0;
916	}	1250	}
917	else	1251	else
918	{	1252	{
919	now_floor = mn_now;	1253	now_floor = mn_now;
920	rt_now = ev_time ();	1254	ev_rt_now = ev_time ();
921	return 1;	1255	return 1;
922	}	1256	}
923	}	1257	}
924		1258
925	static void	1259	void inline_size
926	time_update (EV_P)	1260	time_update (EV_P)
927	{	1261	{
928	int i;	1262	int i;
929		1263
930	#if EV_USE_MONOTONIC	1264	#if EV_USE_MONOTONIC
…		…
932	{	1266	{
933	if (time_update_monotonic (EV_A))	1267	if (time_update_monotonic (EV_A))
934	{	1268	{
935	ev_tstamp odiff = rtmn_diff;	1269	ev_tstamp odiff = rtmn_diff;
936		1270
937	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1271	/* loop a few times, before making important decisions.
		1272	* on the choice of "4": one iteration isn't enough,
		1273	* in case we get preempted during the calls to
		1274	* ev_time and get_clock. a second call is almost guaranteed
		1275	* to succeed in that case, though. and looping a few more times
		1276	* doesn't hurt either as we only do this on time-jumps or
		1277	* in the unlikely event of having been preempted here.
		1278	*/
		1279	for (i = 4; --i; )
938	{	1280	{
939	rtmn_diff = rt_now - mn_now;	1281	rtmn_diff = ev_rt_now - mn_now;
940		1282
941	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1283	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
942	return; /* all is well */	1284	return; /* all is well */
943		1285
944	rt_now = ev_time ();	1286	ev_rt_now = ev_time ();
945	mn_now = get_clock ();	1287	mn_now = get_clock ();
946	now_floor = mn_now;	1288	now_floor = mn_now;
947	}	1289	}
948		1290
		1291	# if EV_PERIODIC_ENABLE
949	periodics_reschedule (EV_A);	1292	periodics_reschedule (EV_A);
		1293	# endif
950	/* no timer adjustment, as the monotonic clock doesn't jump */	1294	/* no timer adjustment, as the monotonic clock doesn't jump */
951	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1295	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
952	}	1296	}
953	}	1297	}
954	else	1298	else
955	#endif	1299	#endif
956	{	1300	{
957	rt_now = ev_time ();	1301	ev_rt_now = ev_time ();
958		1302
959	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1303	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
960	{	1304	{
		1305	#if EV_PERIODIC_ENABLE
961	periodics_reschedule (EV_A);	1306	periodics_reschedule (EV_A);
		1307	#endif
962		1308
963	/* adjust timers. this is easy, as the offset is the same for all */	1309	/* adjust timers. this is easy, as the offset is the same for all of them */
964	for (i = 0; i < timercnt; ++i)	1310	for (i = 0; i < timercnt; ++i)
965	((WT)timers [i])->at += rt_now - mn_now;	1311	((WT)timers [i])->at += ev_rt_now - mn_now;
966	}	1312	}
967		1313
968	mn_now = rt_now;	1314	mn_now = ev_rt_now;
969	}	1315	}
970	}	1316	}
971		1317
972	void	1318	void
973	ev_ref (EV_P)	1319	ev_ref (EV_P)
…		…
984	static int loop_done;	1330	static int loop_done;
985		1331
986	void	1332	void
987	ev_loop (EV_P_ int flags)	1333	ev_loop (EV_P_ int flags)
988	{	1334	{
989	double block;
990	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1335	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1336	? EVUNLOOP_ONE
		1337	: EVUNLOOP_CANCEL;
991		1338
992	do	1339	while (activecnt)
993	{	1340	{
		1341	#if EV_FORK_ENABLE
		1342	/* we might have forked, so queue fork handlers */
		1343	if (expect_false (postfork))
		1344	if (forkcnt)
		1345	{
		1346	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1347	call_pending (EV_A);
		1348	}
		1349	#endif
		1350
994	/* queue check watchers (and execute them) */	1351	/* queue check watchers (and execute them) */
995	if (expect_false (preparecnt))	1352	if (expect_false (preparecnt))
996	{	1353	{
997	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1354	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
998	call_pending (EV_A);	1355	call_pending (EV_A);
999	}	1356	}
1000		1357
		1358	/* we might have forked, so reify kernel state if necessary */
		1359	if (expect_false (postfork))
		1360	loop_fork (EV_A);
		1361
1001	/* update fd-related kernel structures */	1362	/* update fd-related kernel structures */
1002	fd_reify (EV_A);	1363	fd_reify (EV_A);
1003		1364
1004	/* calculate blocking time */	1365	/* calculate blocking time */
		1366	{
		1367	ev_tstamp block;
1005		1368
1006	/* we only need this for !monotonic clockor timers, but as we basically	1369	if (flags & EVLOOP_NONBLOCK || idlecnt)
1007	always have timers, we just calculate it always */	1370	block = 0.; /* do not block at all */
		1371	else
		1372	{
		1373	/* update time to cancel out callback processing overhead */
1008	#if EV_USE_MONOTONIC	1374	#if EV_USE_MONOTONIC
1009	if (expect_true (have_monotonic))	1375	if (expect_true (have_monotonic))
1010	time_update_monotonic (EV_A);	1376	time_update_monotonic (EV_A);
1011	else	1377	else
1012	#endif	1378	#endif
1013	{	1379	{
1014	rt_now = ev_time ();	1380	ev_rt_now = ev_time ();
1015	mn_now = rt_now;	1381	mn_now = ev_rt_now;
1016	}	1382	}
1017		1383
1018	if (flags & EVLOOP_NONBLOCK || idlecnt)
1019	block = 0.;
1020	else
1021	{
1022	block = MAX_BLOCKTIME;	1384	block = MAX_BLOCKTIME;
1023		1385
1024	if (timercnt)	1386	if (timercnt)
1025	{	1387	{
1026	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1388	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1027	if (block > to) block = to;	1389	if (block > to) block = to;
1028	}	1390	}
1029		1391
		1392	#if EV_PERIODIC_ENABLE
1030	if (periodiccnt)	1393	if (periodiccnt)
1031	{	1394	{
1032	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1395	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1033	if (block > to) block = to;	1396	if (block > to) block = to;
1034	}	1397	}
		1398	#endif
1035		1399
1036	if (block < 0.) block = 0.;	1400	if (expect_false (block < 0.)) block = 0.;
1037	}	1401	}
1038		1402
1039	method_poll (EV_A_ block);	1403	backend_poll (EV_A_ block);
		1404	}
1040		1405
1041	/* update rt_now, do magic */	1406	/* update ev_rt_now, do magic */
1042	time_update (EV_A);	1407	time_update (EV_A);
1043		1408
1044	/* queue pending timers and reschedule them */	1409	/* queue pending timers and reschedule them */
1045	timers_reify (EV_A); /* relative timers called last */	1410	timers_reify (EV_A); /* relative timers called last */
		1411	#if EV_PERIODIC_ENABLE
1046	periodics_reify (EV_A); /* absolute timers called first */	1412	periodics_reify (EV_A); /* absolute timers called first */
		1413	#endif
1047		1414
1048	/* queue idle watchers unless io or timers are pending */	1415	/* queue idle watchers unless other events are pending */
1049	if (!pendingcnt)	1416	if (idlecnt && !any_pending (EV_A))
1050	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1417	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1051		1418
1052	/* queue check watchers, to be executed first */	1419	/* queue check watchers, to be executed first */
1053	if (checkcnt)	1420	if (expect_false (checkcnt))
1054	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1421	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1055		1422
1056	call_pending (EV_A);	1423	call_pending (EV_A);
1057	}
1058	while (activecnt && !loop_done);
1059		1424
1060	if (loop_done != 2)	1425	if (expect_false (loop_done))
1061	loop_done = 0;	1426	break;
		1427	}
		1428
		1429	if (loop_done == EVUNLOOP_ONE)
		1430	loop_done = EVUNLOOP_CANCEL;
1062	}	1431	}
1063		1432
1064	void	1433	void
1065	ev_unloop (EV_P_ int how)	1434	ev_unloop (EV_P_ int how)
1066	{	1435	{
1067	loop_done = how;	1436	loop_done = how;
1068	}	1437	}
1069		1438
1070	/*****************************************************************************/	1439	/*****************************************************************************/
1071		1440
1072	inline void	1441	void inline_size
1073	wlist_add (WL *head, WL elem)	1442	wlist_add (WL *head, WL elem)
1074	{	1443	{
1075	elem->next = *head;	1444	elem->next = *head;
1076	*head = elem;	1445	*head = elem;
1077	}	1446	}
1078		1447
1079	inline void	1448	void inline_size
1080	wlist_del (WL *head, WL elem)	1449	wlist_del (WL *head, WL elem)
1081	{	1450	{
1082	while (*head)	1451	while (*head)
1083	{	1452	{
1084	if (*head == elem)	1453	if (*head == elem)
…		…
1089		1458
1090	head = &(*head)->next;	1459	head = &(*head)->next;
1091	}	1460	}
1092	}	1461	}
1093		1462
1094	inline void	1463	void inline_speed
1095	ev_clear_pending (EV_P_ W w)	1464	ev_clear_pending (EV_P_ W w)
1096	{	1465	{
1097	if (w->pending)	1466	if (w->pending)
1098	{	1467	{
1099	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1468	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1100	w->pending = 0;	1469	w->pending = 0;
1101	}	1470	}
1102	}	1471	}
1103		1472
1104	inline void	1473	void inline_speed
1105	ev_start (EV_P_ W w, int active)	1474	ev_start (EV_P_ W w, int active)
1106	{	1475	{
1107	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1476	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1108	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1477	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1109		1478
1110	w->active = active;	1479	w->active = active;
1111	ev_ref (EV_A);	1480	ev_ref (EV_A);
1112	}	1481	}
1113		1482
1114	inline void	1483	void inline_size
1115	ev_stop (EV_P_ W w)	1484	ev_stop (EV_P_ W w)
1116	{	1485	{
1117	ev_unref (EV_A);	1486	ev_unref (EV_A);
1118	w->active = 0;	1487	w->active = 0;
1119	}	1488	}
1120		1489
1121	/*****************************************************************************/	1490	/*****************************************************************************/
1122		1491
1123	void	1492	void
1124	ev_io_start (EV_P_ struct ev_io *w)	1493	ev_io_start (EV_P_ ev_io *w)
1125	{	1494	{
1126	int fd = w->fd;	1495	int fd = w->fd;
1127		1496
1128	if (ev_is_active (w))	1497	if (expect_false (ev_is_active (w)))
1129	return;	1498	return;
1130		1499
1131	assert (("ev_io_start called with negative fd", fd >= 0));	1500	assert (("ev_io_start called with negative fd", fd >= 0));
1132		1501
1133	ev_start (EV_A_ (W)w, 1);	1502	ev_start (EV_A_ (W)w, 1);
1134	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1503	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1135	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1504	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1136		1505
1137	fd_change (EV_A_ fd);	1506	fd_change (EV_A_ fd);
1138	}	1507	}
1139		1508
1140	void	1509	void
1141	ev_io_stop (EV_P_ struct ev_io *w)	1510	ev_io_stop (EV_P_ ev_io *w)
1142	{	1511	{
1143	ev_clear_pending (EV_A_ (W)w);	1512	ev_clear_pending (EV_A_ (W)w);
1144	if (!ev_is_active (w))	1513	if (expect_false (!ev_is_active (w)))
1145	return;	1514	return;
		1515
		1516	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1146		1517
1147	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1518	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1148	ev_stop (EV_A_ (W)w);	1519	ev_stop (EV_A_ (W)w);
1149		1520
1150	fd_change (EV_A_ w->fd);	1521	fd_change (EV_A_ w->fd);
1151	}	1522	}
1152		1523
1153	void	1524	void
1154	ev_timer_start (EV_P_ struct ev_timer *w)	1525	ev_timer_start (EV_P_ ev_timer *w)
1155	{	1526	{
1156	if (ev_is_active (w))	1527	if (expect_false (ev_is_active (w)))
1157	return;	1528	return;
1158		1529
1159	((WT)w)->at += mn_now;	1530	((WT)w)->at += mn_now;
1160		1531
1161	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1532	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1162		1533
1163	ev_start (EV_A_ (W)w, ++timercnt);	1534	ev_start (EV_A_ (W)w, ++timercnt);
1164	array_needsize (timers, timermax, timercnt, );	1535	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1165	timers [timercnt - 1] = w;	1536	timers [timercnt - 1] = w;
1166	upheap ((WT *)timers, timercnt - 1);	1537	upheap ((WT *)timers, timercnt - 1);
1167		1538
		1539	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1540	}
		1541
		1542	void
		1543	ev_timer_stop (EV_P_ ev_timer *w)
		1544	{
		1545	ev_clear_pending (EV_A_ (W)w);
		1546	if (expect_false (!ev_is_active (w)))
		1547	return;
		1548
1168	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1549	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1169	}
1170		1550
1171	void	1551	{
1172	ev_timer_stop (EV_P_ struct ev_timer *w)	1552	int active = ((W)w)->active;
1173	{
1174	ev_clear_pending (EV_A_ (W)w);
1175	if (!ev_is_active (w))
1176	return;
1177		1553
1178	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1554	if (expect_true (--active < --timercnt))
1179
1180	if (((W)w)->active < timercnt--)
1181	{	1555	{
1182	timers [((W)w)->active - 1] = timers [timercnt];	1556	timers [active] = timers [timercnt];
1183	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1557	adjustheap ((WT *)timers, timercnt, active);
1184	}	1558	}
		1559	}
1185		1560
1186	((WT)w)->at = w->repeat;	1561	((WT)w)->at -= mn_now;
1187		1562
1188	ev_stop (EV_A_ (W)w);	1563	ev_stop (EV_A_ (W)w);
1189	}	1564	}
1190		1565
1191	void	1566	void
1192	ev_timer_again (EV_P_ struct ev_timer *w)	1567	ev_timer_again (EV_P_ ev_timer *w)
1193	{	1568	{
1194	if (ev_is_active (w))	1569	if (ev_is_active (w))
1195	{	1570	{
1196	if (w->repeat)	1571	if (w->repeat)
1197	{	1572	{
1198	((WT)w)->at = mn_now + w->repeat;	1573	((WT)w)->at = mn_now + w->repeat;
1199	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1574	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1200	}	1575	}
1201	else	1576	else
1202	ev_timer_stop (EV_A_ w);	1577	ev_timer_stop (EV_A_ w);
1203	}	1578	}
1204	else if (w->repeat)	1579	else if (w->repeat)
		1580	{
		1581	w->at = w->repeat;
1205	ev_timer_start (EV_A_ w);	1582	ev_timer_start (EV_A_ w);
		1583	}
1206	}	1584	}
1207		1585
		1586	#if EV_PERIODIC_ENABLE
1208	void	1587	void
1209	ev_periodic_start (EV_P_ struct ev_periodic *w)	1588	ev_periodic_start (EV_P_ ev_periodic *w)
1210	{	1589	{
1211	if (ev_is_active (w))	1590	if (expect_false (ev_is_active (w)))
1212	return;	1591	return;
1213		1592
		1593	if (w->reschedule_cb)
		1594	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1595	else if (w->interval)
		1596	{
1214	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1597	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1215
1216	/* this formula differs from the one in periodic_reify because we do not always round up */	1598	/* this formula differs from the one in periodic_reify because we do not always round up */
1217	if (w->interval)
1218	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1599	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1600	}
1219		1601
1220	ev_start (EV_A_ (W)w, ++periodiccnt);	1602	ev_start (EV_A_ (W)w, ++periodiccnt);
1221	array_needsize (periodics, periodicmax, periodiccnt, );	1603	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1222	periodics [periodiccnt - 1] = w;	1604	periodics [periodiccnt - 1] = w;
1223	upheap ((WT *)periodics, periodiccnt - 1);	1605	upheap ((WT *)periodics, periodiccnt - 1);
1224		1606
		1607	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1608	}
		1609
		1610	void
		1611	ev_periodic_stop (EV_P_ ev_periodic *w)
		1612	{
		1613	ev_clear_pending (EV_A_ (W)w);
		1614	if (expect_false (!ev_is_active (w)))
		1615	return;
		1616
1225	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1617	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1226	}
1227		1618
1228	void	1619	{
1229	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1620	int active = ((W)w)->active;
1230	{
1231	ev_clear_pending (EV_A_ (W)w);
1232	if (!ev_is_active (w))
1233	return;
1234		1621
1235	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1622	if (expect_true (--active < --periodiccnt))
1236
1237	if (((W)w)->active < periodiccnt--)
1238	{	1623	{
1239	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1624	periodics [active] = periodics [periodiccnt];
1240	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1625	adjustheap ((WT *)periodics, periodiccnt, active);
1241	}	1626	}
		1627	}
1242		1628
1243	ev_stop (EV_A_ (W)w);	1629	ev_stop (EV_A_ (W)w);
1244	}	1630	}
1245		1631
1246	void	1632	void
1247	ev_idle_start (EV_P_ struct ev_idle *w)	1633	ev_periodic_again (EV_P_ ev_periodic *w)
1248	{	1634	{
1249	if (ev_is_active (w))	1635	/* TODO: use adjustheap and recalculation */
1250	return;
1251
1252	ev_start (EV_A_ (W)w, ++idlecnt);
1253	array_needsize (idles, idlemax, idlecnt, );
1254	idles [idlecnt - 1] = w;
1255	}
1256
1257	void
1258	ev_idle_stop (EV_P_ struct ev_idle *w)
1259	{
1260	ev_clear_pending (EV_A_ (W)w);
1261	if (ev_is_active (w))
1262	return;
1263
1264	idles [((W)w)->active - 1] = idles [--idlecnt];
1265	ev_stop (EV_A_ (W)w);	1636	ev_periodic_stop (EV_A_ w);
		1637	ev_periodic_start (EV_A_ w);
1266	}	1638	}
1267		1639	#endif
1268	void
1269	ev_prepare_start (EV_P_ struct ev_prepare *w)
1270	{
1271	if (ev_is_active (w))
1272	return;
1273
1274	ev_start (EV_A_ (W)w, ++preparecnt);
1275	array_needsize (prepares, preparemax, preparecnt, );
1276	prepares [preparecnt - 1] = w;
1277	}
1278
1279	void
1280	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1281	{
1282	ev_clear_pending (EV_A_ (W)w);
1283	if (ev_is_active (w))
1284	return;
1285
1286	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1287	ev_stop (EV_A_ (W)w);
1288	}
1289
1290	void
1291	ev_check_start (EV_P_ struct ev_check *w)
1292	{
1293	if (ev_is_active (w))
1294	return;
1295
1296	ev_start (EV_A_ (W)w, ++checkcnt);
1297	array_needsize (checks, checkmax, checkcnt, );
1298	checks [checkcnt - 1] = w;
1299	}
1300
1301	void
1302	ev_check_stop (EV_P_ struct ev_check *w)
1303	{
1304	ev_clear_pending (EV_A_ (W)w);
1305	if (ev_is_active (w))
1306	return;
1307
1308	checks [((W)w)->active - 1] = checks [--checkcnt];
1309	ev_stop (EV_A_ (W)w);
1310	}
1311		1640
1312	#ifndef SA_RESTART	1641	#ifndef SA_RESTART
1313	# define SA_RESTART 0	1642	# define SA_RESTART 0
1314	#endif	1643	#endif
1315		1644
1316	void	1645	void
1317	ev_signal_start (EV_P_ struct ev_signal *w)	1646	ev_signal_start (EV_P_ ev_signal *w)
1318	{	1647	{
1319	#if EV_MULTIPLICITY	1648	#if EV_MULTIPLICITY
1320	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1649	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1321	#endif	1650	#endif
1322	if (ev_is_active (w))	1651	if (expect_false (ev_is_active (w)))
1323	return;	1652	return;
1324		1653
1325	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1654	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1326		1655
1327	ev_start (EV_A_ (W)w, 1);	1656	ev_start (EV_A_ (W)w, 1);
1328	array_needsize (signals, signalmax, w->signum, signals_init);	1657	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1329	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1658	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1330		1659
1331	if (!((WL)w)->next)	1660	if (!((WL)w)->next)
1332	{	1661	{
1333	#if WIN32	1662	#if _WIN32
1334	signal (w->signum, sighandler);	1663	signal (w->signum, sighandler);
1335	#else	1664	#else
1336	struct sigaction sa;	1665	struct sigaction sa;
1337	sa.sa_handler = sighandler;	1666	sa.sa_handler = sighandler;
1338	sigfillset (&sa.sa_mask);	1667	sigfillset (&sa.sa_mask);
…		…
1341	#endif	1670	#endif
1342	}	1671	}
1343	}	1672	}
1344		1673
1345	void	1674	void
1346	ev_signal_stop (EV_P_ struct ev_signal *w)	1675	ev_signal_stop (EV_P_ ev_signal *w)
1347	{	1676	{
1348	ev_clear_pending (EV_A_ (W)w);	1677	ev_clear_pending (EV_A_ (W)w);
1349	if (!ev_is_active (w))	1678	if (expect_false (!ev_is_active (w)))
1350	return;	1679	return;
1351		1680
1352	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1681	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1353	ev_stop (EV_A_ (W)w);	1682	ev_stop (EV_A_ (W)w);
1354		1683
1355	if (!signals [w->signum - 1].head)	1684	if (!signals [w->signum - 1].head)
1356	signal (w->signum, SIG_DFL);	1685	signal (w->signum, SIG_DFL);
1357	}	1686	}
1358		1687
1359	void	1688	void
1360	ev_child_start (EV_P_ struct ev_child *w)	1689	ev_child_start (EV_P_ ev_child *w)
1361	{	1690	{
1362	#if EV_MULTIPLICITY	1691	#if EV_MULTIPLICITY
1363	assert (("child watchers are only supported in the default loop", loop == default_loop));	1692	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1364	#endif	1693	#endif
1365	if (ev_is_active (w))	1694	if (expect_false (ev_is_active (w)))
1366	return;	1695	return;
1367		1696
1368	ev_start (EV_A_ (W)w, 1);	1697	ev_start (EV_A_ (W)w, 1);
1369	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1698	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1370	}	1699	}
1371		1700
1372	void	1701	void
1373	ev_child_stop (EV_P_ struct ev_child *w)	1702	ev_child_stop (EV_P_ ev_child *w)
1374	{	1703	{
1375	ev_clear_pending (EV_A_ (W)w);	1704	ev_clear_pending (EV_A_ (W)w);
1376	if (ev_is_active (w))	1705	if (expect_false (!ev_is_active (w)))
1377	return;	1706	return;
1378		1707
1379	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1708	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1380	ev_stop (EV_A_ (W)w);	1709	ev_stop (EV_A_ (W)w);
1381	}	1710	}
1382		1711
		1712	#if EV_STAT_ENABLE
		1713
		1714	# ifdef _WIN32
		1715	# undef lstat
		1716	# define lstat(a,b) _stati64 (a,b)
		1717	# endif
		1718
		1719	#define DEF_STAT_INTERVAL 5.0074891
		1720	#define MIN_STAT_INTERVAL 0.1074891
		1721
		1722	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1723
		1724	#if EV_USE_INOTIFY
		1725	# define EV_INOTIFY_BUFSIZE 8192
		1726
		1727	static void noinline
		1728	infy_add (EV_P_ ev_stat *w)
		1729	{
		1730	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);
		1731
		1732	if (w->wd < 0)
		1733	{
		1734	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1735
		1736	/* monitor some parent directory for speedup hints */
		1737	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1738	{
		1739	char path [4096];
		1740	strcpy (path, w->path);
		1741
		1742	do
		1743	{
		1744	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1745	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1746
		1747	char *pend = strrchr (path, '/');
		1748
		1749	if (!pend)
		1750	break; /* whoops, no '/', complain to your admin */
		1751
		1752	*pend = 0;
		1753	w->wd = inotify_add_watch (fs_fd, path, mask);
		1754	}
		1755	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1756	}
		1757	}
		1758	else
		1759	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1760
		1761	if (w->wd >= 0)
		1762	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1763	}
		1764
		1765	static void noinline
		1766	infy_del (EV_P_ ev_stat *w)
		1767	{
		1768	int slot;
		1769	int wd = w->wd;
		1770
		1771	if (wd < 0)
		1772	return;
		1773
		1774	w->wd = -2;
		1775	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1776	wlist_del (&fs_hash [slot].head, (WL)w);
		1777
		1778	/* remove this watcher, if others are watching it, they will rearm */
		1779	inotify_rm_watch (fs_fd, wd);
		1780	}
		1781
		1782	static void noinline
		1783	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1784	{
		1785	if (slot < 0)
		1786	/* overflow, need to check for all hahs slots */
		1787	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1788	infy_wd (EV_A_ slot, wd, ev);
		1789	else
		1790	{
		1791	WL w_;
		1792
		1793	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1794	{
		1795	ev_stat *w = (ev_stat *)w_;
		1796	w_ = w_->next; /* lets us remove this watcher and all before it */
		1797
		1798	if (w->wd == wd || wd == -1)
		1799	{
		1800	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1801	{
		1802	w->wd = -1;
		1803	infy_add (EV_A_ w); /* re-add, no matter what */
		1804	}
		1805
		1806	stat_timer_cb (EV_A_ &w->timer, 0);
		1807	}
		1808	}
		1809	}
		1810	}
		1811
		1812	static void
		1813	infy_cb (EV_P_ ev_io *w, int revents)
		1814	{
		1815	char buf [EV_INOTIFY_BUFSIZE];
		1816	struct inotify_event *ev = (struct inotify_event *)buf;
		1817	int ofs;
		1818	int len = read (fs_fd, buf, sizeof (buf));
		1819
		1820	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1821	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1822	}
		1823
		1824	void inline_size
		1825	infy_init (EV_P)
		1826	{
		1827	if (fs_fd != -2)
		1828	return;
		1829
		1830	fs_fd = inotify_init ();
		1831
		1832	if (fs_fd >= 0)
		1833	{
		1834	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1835	ev_set_priority (&fs_w, EV_MAXPRI);
		1836	ev_io_start (EV_A_ &fs_w);
		1837	}
		1838	}
		1839
		1840	void inline_size
		1841	infy_fork (EV_P)
		1842	{
		1843	int slot;
		1844
		1845	if (fs_fd < 0)
		1846	return;
		1847
		1848	close (fs_fd);
		1849	fs_fd = inotify_init ();
		1850
		1851	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1852	{
		1853	WL w_ = fs_hash [slot].head;
		1854	fs_hash [slot].head = 0;
		1855
		1856	while (w_)
		1857	{
		1858	ev_stat *w = (ev_stat *)w_;
		1859	w_ = w_->next; /* lets us add this watcher */
		1860
		1861	w->wd = -1;
		1862
		1863	if (fs_fd >= 0)
		1864	infy_add (EV_A_ w); /* re-add, no matter what */
		1865	else
		1866	ev_timer_start (EV_A_ &w->timer);
		1867	}
		1868
		1869	}
		1870	}
		1871
		1872	#endif
		1873
		1874	void
		1875	ev_stat_stat (EV_P_ ev_stat *w)
		1876	{
		1877	if (lstat (w->path, &w->attr) < 0)
		1878	w->attr.st_nlink = 0;
		1879	else if (!w->attr.st_nlink)
		1880	w->attr.st_nlink = 1;
		1881	}
		1882
		1883	static void noinline
		1884	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1885	{
		1886	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1887
		1888	/* we copy this here each the time so that */
		1889	/* prev has the old value when the callback gets invoked */
		1890	w->prev = w->attr;
		1891	ev_stat_stat (EV_A_ w);
		1892
		1893	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1894	if (
		1895	w->prev.st_dev != w->attr.st_dev
		1896	|| w->prev.st_ino != w->attr.st_ino
		1897	|| w->prev.st_mode != w->attr.st_mode
		1898	|| w->prev.st_nlink != w->attr.st_nlink
		1899	|| w->prev.st_uid != w->attr.st_uid
		1900	|| w->prev.st_gid != w->attr.st_gid
		1901	|| w->prev.st_rdev != w->attr.st_rdev
		1902	|| w->prev.st_size != w->attr.st_size
		1903	|| w->prev.st_atime != w->attr.st_atime
		1904	|| w->prev.st_mtime != w->attr.st_mtime
		1905	|| w->prev.st_ctime != w->attr.st_ctime
		1906	) {
		1907	#if EV_USE_INOTIFY
		1908	infy_del (EV_A_ w);
		1909	infy_add (EV_A_ w);
		1910	ev_stat_stat (EV_A_ w); /* avoid race... */
		1911	#endif
		1912
		1913	ev_feed_event (EV_A_ w, EV_STAT);
		1914	}
		1915	}
		1916
		1917	void
		1918	ev_stat_start (EV_P_ ev_stat *w)
		1919	{
		1920	if (expect_false (ev_is_active (w)))
		1921	return;
		1922
		1923	/* since we use memcmp, we need to clear any padding data etc. */
		1924	memset (&w->prev, 0, sizeof (ev_statdata));
		1925	memset (&w->attr, 0, sizeof (ev_statdata));
		1926
		1927	ev_stat_stat (EV_A_ w);
		1928
		1929	if (w->interval < MIN_STAT_INTERVAL)
		1930	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1931
		1932	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1933	ev_set_priority (&w->timer, ev_priority (w));
		1934
		1935	#if EV_USE_INOTIFY
		1936	infy_init (EV_A);
		1937
		1938	if (fs_fd >= 0)
		1939	infy_add (EV_A_ w);
		1940	else
		1941	#endif
		1942	ev_timer_start (EV_A_ &w->timer);
		1943
		1944	ev_start (EV_A_ (W)w, 1);
		1945	}
		1946
		1947	void
		1948	ev_stat_stop (EV_P_ ev_stat *w)
		1949	{
		1950	ev_clear_pending (EV_A_ (W)w);
		1951	if (expect_false (!ev_is_active (w)))
		1952	return;
		1953
		1954	#if EV_USE_INOTIFY
		1955	infy_del (EV_A_ w);
		1956	#endif
		1957	ev_timer_stop (EV_A_ &w->timer);
		1958
		1959	ev_stop (EV_A_ (W)w);
		1960	}
		1961	#endif
		1962
		1963	void
		1964	ev_idle_start (EV_P_ ev_idle *w)
		1965	{
		1966	if (expect_false (ev_is_active (w)))
		1967	return;
		1968
		1969	ev_start (EV_A_ (W)w, ++idlecnt);
		1970	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1971	idles [idlecnt - 1] = w;
		1972	}
		1973
		1974	void
		1975	ev_idle_stop (EV_P_ ev_idle *w)
		1976	{
		1977	ev_clear_pending (EV_A_ (W)w);
		1978	if (expect_false (!ev_is_active (w)))
		1979	return;
		1980
		1981	{
		1982	int active = ((W)w)->active;
		1983	idles [active - 1] = idles [--idlecnt];
		1984	((W)idles [active - 1])->active = active;
		1985	}
		1986
		1987	ev_stop (EV_A_ (W)w);
		1988	}
		1989
		1990	void
		1991	ev_prepare_start (EV_P_ ev_prepare *w)
		1992	{
		1993	if (expect_false (ev_is_active (w)))
		1994	return;
		1995
		1996	ev_start (EV_A_ (W)w, ++preparecnt);
		1997	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1998	prepares [preparecnt - 1] = w;
		1999	}
		2000
		2001	void
		2002	ev_prepare_stop (EV_P_ ev_prepare *w)
		2003	{
		2004	ev_clear_pending (EV_A_ (W)w);
		2005	if (expect_false (!ev_is_active (w)))
		2006	return;
		2007
		2008	{
		2009	int active = ((W)w)->active;
		2010	prepares [active - 1] = prepares [--preparecnt];
		2011	((W)prepares [active - 1])->active = active;
		2012	}
		2013
		2014	ev_stop (EV_A_ (W)w);
		2015	}
		2016
		2017	void
		2018	ev_check_start (EV_P_ ev_check *w)
		2019	{
		2020	if (expect_false (ev_is_active (w)))
		2021	return;
		2022
		2023	ev_start (EV_A_ (W)w, ++checkcnt);
		2024	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2025	checks [checkcnt - 1] = w;
		2026	}
		2027
		2028	void
		2029	ev_check_stop (EV_P_ ev_check *w)
		2030	{
		2031	ev_clear_pending (EV_A_ (W)w);
		2032	if (expect_false (!ev_is_active (w)))
		2033	return;
		2034
		2035	{
		2036	int active = ((W)w)->active;
		2037	checks [active - 1] = checks [--checkcnt];
		2038	((W)checks [active - 1])->active = active;
		2039	}
		2040
		2041	ev_stop (EV_A_ (W)w);
		2042	}
		2043
		2044	#if EV_EMBED_ENABLE
		2045	void noinline
		2046	ev_embed_sweep (EV_P_ ev_embed *w)
		2047	{
		2048	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2049	}
		2050
		2051	static void
		2052	embed_cb (EV_P_ ev_io *io, int revents)
		2053	{
		2054	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2055
		2056	if (ev_cb (w))
		2057	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2058	else
		2059	ev_embed_sweep (loop, w);
		2060	}
		2061
		2062	void
		2063	ev_embed_start (EV_P_ ev_embed *w)
		2064	{
		2065	if (expect_false (ev_is_active (w)))
		2066	return;
		2067
		2068	{
		2069	struct ev_loop *loop = w->loop;
		2070	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2071	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2072	}
		2073
		2074	ev_set_priority (&w->io, ev_priority (w));
		2075	ev_io_start (EV_A_ &w->io);
		2076
		2077	ev_start (EV_A_ (W)w, 1);
		2078	}
		2079
		2080	void
		2081	ev_embed_stop (EV_P_ ev_embed *w)
		2082	{
		2083	ev_clear_pending (EV_A_ (W)w);
		2084	if (expect_false (!ev_is_active (w)))
		2085	return;
		2086
		2087	ev_io_stop (EV_A_ &w->io);
		2088
		2089	ev_stop (EV_A_ (W)w);
		2090	}
		2091	#endif
		2092
		2093	#if EV_FORK_ENABLE
		2094	void
		2095	ev_fork_start (EV_P_ ev_fork *w)
		2096	{
		2097	if (expect_false (ev_is_active (w)))
		2098	return;
		2099
		2100	ev_start (EV_A_ (W)w, ++forkcnt);
		2101	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2102	forks [forkcnt - 1] = w;
		2103	}
		2104
		2105	void
		2106	ev_fork_stop (EV_P_ ev_fork *w)
		2107	{
		2108	ev_clear_pending (EV_A_ (W)w);
		2109	if (expect_false (!ev_is_active (w)))
		2110	return;
		2111
		2112	{
		2113	int active = ((W)w)->active;
		2114	forks [active - 1] = forks [--forkcnt];
		2115	((W)forks [active - 1])->active = active;
		2116	}
		2117
		2118	ev_stop (EV_A_ (W)w);
		2119	}
		2120	#endif
		2121
1383	/*****************************************************************************/	2122	/*****************************************************************************/
1384		2123
1385	struct ev_once	2124	struct ev_once
1386	{	2125	{
1387	struct ev_io io;	2126	ev_io io;
1388	struct ev_timer to;	2127	ev_timer to;
1389	void (*cb)(int revents, void *arg);	2128	void (*cb)(int revents, void *arg);
1390	void *arg;	2129	void *arg;
1391	};	2130	};
1392		2131
1393	static void	2132	static void
…		…
1396	void (*cb)(int revents, void *arg) = once->cb;	2135	void (*cb)(int revents, void *arg) = once->cb;
1397	void *arg = once->arg;	2136	void *arg = once->arg;
1398		2137
1399	ev_io_stop (EV_A_ &once->io);	2138	ev_io_stop (EV_A_ &once->io);
1400	ev_timer_stop (EV_A_ &once->to);	2139	ev_timer_stop (EV_A_ &once->to);
1401	free (once);	2140	ev_free (once);
1402		2141
1403	cb (revents, arg);	2142	cb (revents, arg);
1404	}	2143	}
1405		2144
1406	static void	2145	static void
1407	once_cb_io (EV_P_ struct ev_io *w, int revents)	2146	once_cb_io (EV_P_ ev_io *w, int revents)
1408	{	2147	{
1409	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2148	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1410	}	2149	}
1411		2150
1412	static void	2151	static void
1413	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2152	once_cb_to (EV_P_ ev_timer *w, int revents)
1414	{	2153	{
1415	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2154	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1416	}	2155	}
1417		2156
1418	void	2157	void
1419	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2158	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1420	{	2159	{
1421	struct ev_once *once = malloc (sizeof (struct ev_once));	2160	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1422		2161
1423	if (!once)	2162	if (expect_false (!once))
		2163	{
1424	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2164	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1425	else	2165	return;
1426	{	2166	}
		2167
1427	once->cb = cb;	2168	once->cb = cb;
1428	once->arg = arg;	2169	once->arg = arg;
1429		2170
1430	ev_watcher_init (&once->io, once_cb_io);	2171	ev_init (&once->io, once_cb_io);
1431	if (fd >= 0)	2172	if (fd >= 0)
1432	{	2173	{
1433	ev_io_set (&once->io, fd, events);	2174	ev_io_set (&once->io, fd, events);
1434	ev_io_start (EV_A_ &once->io);	2175	ev_io_start (EV_A_ &once->io);
1435	}	2176	}
1436		2177
1437	ev_watcher_init (&once->to, once_cb_to);	2178	ev_init (&once->to, once_cb_to);
1438	if (timeout >= 0.)	2179	if (timeout >= 0.)
1439	{	2180	{
1440	ev_timer_set (&once->to, timeout, 0.);	2181	ev_timer_set (&once->to, timeout, 0.);
1441	ev_timer_start (EV_A_ &once->to);	2182	ev_timer_start (EV_A_ &once->to);
1442	}
1443	}	2183	}
1444	}	2184	}
1445		2185
		2186	#ifdef __cplusplus
		2187	}
		2188	#endif
		2189

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