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Comparing libev/ev.c (file contents):
Revision 1.63 by root, Sun Nov 4 22:03:17 2007 UTC vs.
Revision 1.162 by root, Mon Dec 3 13:41:24 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
33		42
34	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
37	# endif	57	# endif
38		58
		59	# ifndef EV_USE_SELECT
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
40	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
41	# endif	65	# endif
42		66
		67	# ifndef EV_USE_POLL
43	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
44	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
45	# endif	73	# endif
46		74
		75	# ifndef EV_USE_EPOLL
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
49	# endif	81	# endif
50		82
		83	# ifndef EV_USE_KQUEUE
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
		97	# endif
		98
		99	# ifndef EV_USE_INOTIFY
		100	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		101	# define EV_USE_INOTIFY 1
		102	# else
		103	# define EV_USE_INOTIFY 0
		104	# endif
53	# endif	105	# endif
54		106
55	#endif	107	#endif
56		108
57	#include <math.h>	109	#include <math.h>
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
		257	#ifdef _WIN32
		258	# include "ev_win32.c"
		259	#endif
		260
150	/*****************************************************************************/	261	/*****************************************************************************/
151		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
152	typedef struct	313	typedef struct
153	{	314	{
154	struct ev_watcher_list *head;	315	WL head;
155	unsigned char events;	316	unsigned char events;
156	unsigned char reify;	317	unsigned char reify;
		318	#if EV_SELECT_IS_WINSOCKET
		319	SOCKET handle;
		320	#endif
157	} ANFD;	321	} ANFD;
158		322
159	typedef struct	323	typedef struct
160	{	324	{
161	W w;	325	W w;
162	int events;	326	int events;
163	} ANPENDING;	327	} ANPENDING;
164		328
		329	#if EV_USE_INOTIFY
		330	typedef struct
		331	{
		332	WL head;
		333	} ANFS;
		334	#endif
		335
165	#if EV_MULTIPLICITY	336	#if EV_MULTIPLICITY
166		337
167	struct ev_loop	338	struct ev_loop
168	{	339	{
		340	ev_tstamp ev_rt_now;
		341	#define ev_rt_now ((loop)->ev_rt_now)
169	# define VAR(name,decl) decl;	342	#define VAR(name,decl) decl;
170	# include "ev_vars.h"	343	#include "ev_vars.h"
171	};
172	# undef VAR	344	#undef VAR
		345	};
173	# 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;
174		350
175	#else	351	#else
176		352
		353	ev_tstamp ev_rt_now;
177	# define VAR(name,decl) static decl;	354	#define VAR(name,decl) static decl;
178	# include "ev_vars.h"	355	#include "ev_vars.h"
179	# undef VAR	356	#undef VAR
		357
		358	static int ev_default_loop_ptr;
180		359
181	#endif	360	#endif
182		361
183	/*****************************************************************************/	362	/*****************************************************************************/
184		363
185	inline ev_tstamp	364	ev_tstamp
186	ev_time (void)	365	ev_time (void)
187	{	366	{
188	#if EV_USE_REALTIME	367	#if EV_USE_REALTIME
189	struct timespec ts;	368	struct timespec ts;
190	clock_gettime (CLOCK_REALTIME, &ts);	369	clock_gettime (CLOCK_REALTIME, &ts);
…		…
194	gettimeofday (&tv, 0);	373	gettimeofday (&tv, 0);
195	return tv.tv_sec + tv.tv_usec * 1e-6;	374	return tv.tv_sec + tv.tv_usec * 1e-6;
196	#endif	375	#endif
197	}	376	}
198		377
199	inline ev_tstamp	378	ev_tstamp inline_size
200	get_clock (void)	379	get_clock (void)
201	{	380	{
202	#if EV_USE_MONOTONIC	381	#if EV_USE_MONOTONIC
203	if (expect_true (have_monotonic))	382	if (expect_true (have_monotonic))
204	{	383	{
…		…
209	#endif	388	#endif
210		389
211	return ev_time ();	390	return ev_time ();
212	}	391	}
213		392
		393	#if EV_MULTIPLICITY
214	ev_tstamp	394	ev_tstamp
215	ev_now (EV_P)	395	ev_now (EV_P)
216	{	396	{
217	return rt_now;	397	return ev_rt_now;
218	}	398	}
		399	#endif
219		400
220	#define array_roundsize(base,n) ((n) | 4 & ~3)	401	#define array_roundsize(type,n) (((n) | 4) & ~3)
221		402
222	#define array_needsize(base,cur,cnt,init) \	403	#define array_needsize(type,base,cur,cnt,init) \
223	if (expect_false ((cnt) > cur)) \	404	if (expect_false ((cnt) > cur)) \
224	{ \	405	{ \
225	int newcnt = cur; \	406	int newcnt = cur; \
226	do \	407	do \
227	{ \	408	{ \
228	newcnt = array_roundsize (base, newcnt << 1); \	409	newcnt = array_roundsize (type, newcnt << 1); \
229	} \	410	} \
230	while ((cnt) > newcnt); \	411	while ((cnt) > newcnt); \
231	\	412	\
232	base = realloc (base, sizeof (*base) * (newcnt)); \	413	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
233	init (base + cur, newcnt - cur); \	414	init (base + cur, newcnt - cur); \
234	cur = newcnt; \	415	cur = newcnt; \
235	}	416	}
		417
		418	#define array_slim(type,stem) \
		419	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		420	{ \
		421	stem ## max = array_roundsize (stem ## cnt >> 1); \
		422	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		423	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		424	}
		425
		426	#define array_free(stem, idx) \
		427	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
236		428
237	/*****************************************************************************/	429	/*****************************************************************************/
238		430
239	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
240	anfds_init (ANFD *base, int count)	460	anfds_init (ANFD *base, int count)
241	{	461	{
242	while (count--)	462	while (count--)
243	{	463	{
244	base->head = 0;	464	base->head = 0;
…		…
247		467
248	++base;	468	++base;
249	}	469	}
250	}	470	}
251		471
252	static void	472	void inline_speed
253	event (EV_P_ W w, int events)
254	{
255	if (w->pending)
256	{
257	pendings [ABSPRI (w)][w->pending - 1].events |= events;
258	return;
259	}
260
261	w->pending = ++pendingcnt [ABSPRI (w)];
262	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
263	pendings [ABSPRI (w)][w->pending - 1].w = w;
264	pendings [ABSPRI (w)][w->pending - 1].events = events;
265	}
266
267	static void
268	queue_events (EV_P_ W *events, int eventcnt, int type)
269	{
270	int i;
271
272	for (i = 0; i < eventcnt; ++i)
273	event (EV_A_ events [i], type);
274	}
275
276	static void
277	fd_event (EV_P_ int fd, int events)	473	fd_event (EV_P_ int fd, int revents)
278	{	474	{
279	ANFD *anfd = anfds + fd;	475	ANFD *anfd = anfds + fd;
280	struct ev_io *w;	476	ev_io *w;
281		477
282	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)
283	{	479	{
284	int ev = w->events & events;	480	int ev = w->events & revents;
285		481
286	if (ev)	482	if (ev)
287	event (EV_A_ (W)w, ev);	483	ev_feed_event (EV_A_ (W)w, ev);
288	}	484	}
289	}	485	}
290		486
291	/*****************************************************************************/	487	void
		488	ev_feed_fd_event (EV_P_ int fd, int revents)
		489	{
		490	fd_event (EV_A_ fd, revents);
		491	}
292		492
293	static void	493	void inline_size
294	fd_reify (EV_P)	494	fd_reify (EV_P)
295	{	495	{
296	int i;	496	int i;
297		497
298	for (i = 0; i < fdchangecnt; ++i)	498	for (i = 0; i < fdchangecnt; ++i)
299	{	499	{
300	int fd = fdchanges [i];	500	int fd = fdchanges [i];
301	ANFD *anfd = anfds + fd;	501	ANFD *anfd = anfds + fd;
302	struct ev_io *w;	502	ev_io *w;
303		503
304	int events = 0;	504	int events = 0;
305		505
306	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)
307	events |= w->events;	507	events |= w->events;
308		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
309	anfd->reify = 0;	518	anfd->reify = 0;
310		519
311	if (anfd->events != events)
312	{
313	method_modify (EV_A_ fd, anfd->events, events);	520	backend_modify (EV_A_ fd, anfd->events, events);
314	anfd->events = events;	521	anfd->events = events;
315	}
316	}	522	}
317		523
318	fdchangecnt = 0;	524	fdchangecnt = 0;
319	}	525	}
320		526
321	static void	527	void inline_size
322	fd_change (EV_P_ int fd)	528	fd_change (EV_P_ int fd)
323	{	529	{
324	if (anfds [fd].reify || fdchangecnt < 0)	530	if (expect_false (anfds [fd].reify))
325	return;	531	return;
326		532
327	anfds [fd].reify = 1;	533	anfds [fd].reify = 1;
328		534
329	++fdchangecnt;	535	++fdchangecnt;
330	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	536	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
331	fdchanges [fdchangecnt - 1] = fd;	537	fdchanges [fdchangecnt - 1] = fd;
332	}	538	}
333		539
334	static void	540	void inline_speed
335	fd_kill (EV_P_ int fd)	541	fd_kill (EV_P_ int fd)
336	{	542	{
337	struct ev_io *w;	543	ev_io *w;
338		544
339	while ((w = (struct ev_io *)anfds [fd].head))	545	while ((w = (ev_io *)anfds [fd].head))
340	{	546	{
341	ev_io_stop (EV_A_ w);	547	ev_io_stop (EV_A_ w);
342	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);
343	}	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
344	}	560	}
345		561
346	/* called on EBADF to verify fds */	562	/* called on EBADF to verify fds */
347	static void	563	static void noinline
348	fd_ebadf (EV_P)	564	fd_ebadf (EV_P)
349	{	565	{
350	int fd;	566	int fd;
351		567
352	for (fd = 0; fd < anfdmax; ++fd)	568	for (fd = 0; fd < anfdmax; ++fd)
353	if (anfds [fd].events)	569	if (anfds [fd].events)
354	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	570	if (!fd_valid (fd) == -1 && errno == EBADF)
355	fd_kill (EV_A_ fd);	571	fd_kill (EV_A_ fd);
356	}	572	}
357		573
358	/* 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 */
359	static void	575	static void noinline
360	fd_enomem (EV_P)	576	fd_enomem (EV_P)
361	{	577	{
362	int fd;	578	int fd;
363		579
364	for (fd = anfdmax; fd--; )	580	for (fd = anfdmax; fd--; )
365	if (anfds [fd].events)	581	if (anfds [fd].events)
366	{	582	{
367	close (fd);
368	fd_kill (EV_A_ fd);	583	fd_kill (EV_A_ fd);
369	return;	584	return;
370	}	585	}
371	}	586	}
372		587
373	/* 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 */
374	static void	589	static void noinline
375	fd_rearm_all (EV_P)	590	fd_rearm_all (EV_P)
376	{	591	{
377	int fd;	592	int fd;
378		593
379	/* this should be highly optimised to not do anything but set a flag */
380	for (fd = 0; fd < anfdmax; ++fd)	594	for (fd = 0; fd < anfdmax; ++fd)
381	if (anfds [fd].events)	595	if (anfds [fd].events)
382	{	596	{
383	anfds [fd].events = 0;	597	anfds [fd].events = 0;
384	fd_change (EV_A_ fd);	598	fd_change (EV_A_ fd);
385	}	599	}
386	}	600	}
387		601
388	/*****************************************************************************/	602	/*****************************************************************************/
389		603
390	static void	604	void inline_speed
391	upheap (WT *heap, int k)	605	upheap (WT *heap, int k)
392	{	606	{
393	WT w = heap [k];	607	WT w = heap [k];
394		608
395	while (k && heap [k >> 1]->at > w->at)	609	while (k && heap [k >> 1]->at > w->at)
…		…
402	heap [k] = w;	616	heap [k] = w;
403	((W)heap [k])->active = k + 1;	617	((W)heap [k])->active = k + 1;
404		618
405	}	619	}
406		620
407	static void	621	void inline_speed
408	downheap (WT *heap, int N, int k)	622	downheap (WT *heap, int N, int k)
409	{	623	{
410	WT w = heap [k];	624	WT w = heap [k];
411		625
412	while (k < (N >> 1))	626	while (k < (N >> 1))
…		…
426		640
427	heap [k] = w;	641	heap [k] = w;
428	((W)heap [k])->active = k + 1;	642	((W)heap [k])->active = k + 1;
429	}	643	}
430		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
431	/*****************************************************************************/	652	/*****************************************************************************/
432		653
433	typedef struct	654	typedef struct
434	{	655	{
435	struct ev_watcher_list *head;	656	WL head;
436	sig_atomic_t volatile gotsig;	657	sig_atomic_t volatile gotsig;
437	} ANSIG;	658	} ANSIG;
438		659
439	static ANSIG *signals;	660	static ANSIG *signals;
440	static int signalmax;	661	static int signalmax;
441		662
442	static int sigpipe [2];	663	static int sigpipe [2];
443	static sig_atomic_t volatile gotsig;	664	static sig_atomic_t volatile gotsig;
444	static struct ev_io sigev;	665	static ev_io sigev;
445		666
446	static void	667	void inline_size
447	signals_init (ANSIG *base, int count)	668	signals_init (ANSIG *base, int count)
448	{	669	{
449	while (count--)	670	while (count--)
450	{	671	{
451	base->head = 0;	672	base->head = 0;
…		…
456	}	677	}
457		678
458	static void	679	static void
459	sighandler (int signum)	680	sighandler (int signum)
460	{	681	{
		682	#if _WIN32
		683	signal (signum, sighandler);
		684	#endif
		685
461	signals [signum - 1].gotsig = 1;	686	signals [signum - 1].gotsig = 1;
462		687
463	if (!gotsig)	688	if (!gotsig)
464	{	689	{
465	int old_errno = errno;	690	int old_errno = errno;
…		…
467	write (sigpipe [1], &signum, 1);	692	write (sigpipe [1], &signum, 1);
468	errno = old_errno;	693	errno = old_errno;
469	}	694	}
470	}	695	}
471		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
472	static void	717	static void
473	sigcb (EV_P_ struct ev_io *iow, int revents)	718	sigcb (EV_P_ ev_io *iow, int revents)
474	{	719	{
475	struct ev_watcher_list *w;
476	int signum;	720	int signum;
477		721
478	read (sigpipe [0], &revents, 1);	722	read (sigpipe [0], &revents, 1);
479	gotsig = 0;	723	gotsig = 0;
480		724
481	for (signum = signalmax; signum--; )	725	for (signum = signalmax; signum--; )
482	if (signals [signum].gotsig)	726	if (signals [signum].gotsig)
483	{	727	ev_feed_signal_event (EV_A_ signum + 1);
484	signals [signum].gotsig = 0;
485
486	for (w = signals [signum].head; w; w = w->next)
487	event (EV_A_ (W)w, EV_SIGNAL);
488	}
489	}	728	}
490		729
491	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
492	siginit (EV_P)	743	siginit (EV_P)
493	{	744	{
494	#ifndef WIN32	745	fd_intern (sigpipe [0]);
495	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	746	fd_intern (sigpipe [1]);
496	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
497
498	/* rather than sort out wether we really need nb, set it */
499	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
500	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
501	#endif
502		747
503	ev_io_set (&sigev, sigpipe [0], EV_READ);	748	ev_io_set (&sigev, sigpipe [0], EV_READ);
504	ev_io_start (EV_A_ &sigev);	749	ev_io_start (EV_A_ &sigev);
505	ev_unref (EV_A); /* child watcher should not keep loop alive */	750	ev_unref (EV_A); /* child watcher should not keep loop alive */
506	}	751	}
507		752
508	/*****************************************************************************/	753	/*****************************************************************************/
509		754
		755	static ev_child *childs [EV_PID_HASHSIZE];
		756
510	#ifndef WIN32	757	#ifndef _WIN32
511		758
512	static struct ev_child *childs [PID_HASHSIZE];
513	static struct ev_signal childev;	759	static ev_signal childev;
514		760
515	#ifndef WCONTINUED	761	void inline_speed
516	# define WCONTINUED 0
517	#endif
518
519	static void
520	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)
521	{	763	{
522	struct ev_child *w;	764	ev_child *w;
523		765
524	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)
525	if (w->pid == pid || !w->pid)	767	if (w->pid == pid || !w->pid)
526	{	768	{
527	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	769	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
528	w->rpid = pid;	770	w->rpid = pid;
529	w->rstatus = status;	771	w->rstatus = status;
530	event (EV_A_ (W)w, EV_CHILD);	772	ev_feed_event (EV_A_ (W)w, EV_CHILD);
531	}	773	}
532	}	774	}
533		775
		776	#ifndef WCONTINUED
		777	# define WCONTINUED 0
		778	#endif
		779
534	static void	780	static void
535	childcb (EV_P_ struct ev_signal *sw, int revents)	781	childcb (EV_P_ ev_signal *sw, int revents)
536	{	782	{
537	int pid, status;	783	int pid, status;
538		784
		785	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
539	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	786	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
540	{	787	if (!WCONTINUED
		788	|| errno != EINVAL
		789	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		790	return;
		791
541	/* 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 */
542	event (EV_A_ (W)sw, EV_SIGNAL);	794	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
543		795
544	child_reap (EV_A_ sw, pid, pid, status);	796	child_reap (EV_A_ sw, pid, pid, status);
		797	if (EV_PID_HASHSIZE > 1)
545	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 */
546	}
547	}	799	}
548		800
549	#endif	801	#endif
550		802
551	/*****************************************************************************/	803	/*****************************************************************************/
552		804
		805	#if EV_USE_PORT
		806	# include "ev_port.c"
		807	#endif
553	#if EV_USE_KQUEUE	808	#if EV_USE_KQUEUE
554	# include "ev_kqueue.c"	809	# include "ev_kqueue.c"
555	#endif	810	#endif
556	#if EV_USE_EPOLL	811	#if EV_USE_EPOLL
557	# include "ev_epoll.c"	812	# include "ev_epoll.c"
…		…
574	{	829	{
575	return EV_VERSION_MINOR;	830	return EV_VERSION_MINOR;
576	}	831	}
577		832
578	/* 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 */
579	static int	834	int inline_size
580	enable_secure (void)	835	enable_secure (void)
581	{	836	{
582	#ifdef WIN32	837	#ifdef _WIN32
583	return 0;	838	return 0;
584	#else	839	#else
585	return getuid () != geteuid ()	840	return getuid () != geteuid ()
586	|| getgid () != getegid ();	841	|| getgid () != getegid ();
587	#endif	842	#endif
588	}	843	}
589		844
590	int	845	unsigned int
591	ev_method (EV_P)	846	ev_supported_backends (void)
592	{	847	{
593	return method;	848	unsigned int flags = 0;
594	}
595		849
596	static void	850	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
597	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)
598	{	861	{
599	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	unsigned int
		892	ev_loop_count (EV_P)
		893	{
		894	return loop_count;
		895	}
		896
		897	static void noinline
		898	loop_init (EV_P_ unsigned int flags)
		899	{
		900	if (!backend)
600	{	901	{
601	#if EV_USE_MONOTONIC	902	#if EV_USE_MONOTONIC
602	{	903	{
603	struct timespec ts;	904	struct timespec ts;
604	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	905	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
605	have_monotonic = 1;	906	have_monotonic = 1;
606	}	907	}
607	#endif	908	#endif
608		909
609	rt_now = ev_time ();	910	ev_rt_now = ev_time ();
610	mn_now = get_clock ();	911	mn_now = get_clock ();
611	now_floor = mn_now;	912	now_floor = mn_now;
612	rtmn_diff = rt_now - mn_now;	913	rtmn_diff = ev_rt_now - mn_now;
613		914
614	if (methods == EVMETHOD_AUTO)	915	/* pid check not overridable via env */
615	if (!enable_secure () && getenv ("LIBEV_METHODS"))	916	#ifndef _WIN32
		917	if (flags & EVFLAG_FORKCHECK)
		918	curpid = getpid ();
		919	#endif
		920
		921	if (!(flags & EVFLAG_NOENV)
		922	&& !enable_secure ()
		923	&& getenv ("LIBEV_FLAGS"))
616	methods = atoi (getenv ("LIBEV_METHODS"));	924	flags = atoi (getenv ("LIBEV_FLAGS"));
617	else
618	methods = EVMETHOD_ANY;
619		925
620	method = 0;	926	if (!(flags & 0x0000ffffUL))
		927	flags |= ev_recommended_backends ();
		928
		929	backend = 0;
		930	backend_fd = -1;
621	#if EV_USE_WIN32	931	#if EV_USE_INOTIFY
622	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	932	fs_fd = -2;
		933	#endif
		934
		935	#if EV_USE_PORT
		936	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
623	#endif	937	#endif
624	#if EV_USE_KQUEUE	938	#if EV_USE_KQUEUE
625	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	939	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
626	#endif	940	#endif
627	#if EV_USE_EPOLL	941	#if EV_USE_EPOLL
628	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	942	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
629	#endif	943	#endif
630	#if EV_USE_POLL	944	#if EV_USE_POLL
631	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	945	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
632	#endif	946	#endif
633	#if EV_USE_SELECT	947	#if EV_USE_SELECT
634	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	948	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
635	#endif	949	#endif
636	}
637	}
638		950
639	void	951	ev_init (&sigev, sigcb);
		952	ev_set_priority (&sigev, EV_MAXPRI);
		953	}
		954	}
		955
		956	static void noinline
640	loop_destroy (EV_P)	957	loop_destroy (EV_P)
641	{	958	{
		959	int i;
		960
642	#if EV_USE_WIN32	961	#if EV_USE_INOTIFY
643	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	962	if (fs_fd >= 0)
		963	close (fs_fd);
		964	#endif
		965
		966	if (backend_fd >= 0)
		967	close (backend_fd);
		968
		969	#if EV_USE_PORT
		970	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
644	#endif	971	#endif
645	#if EV_USE_KQUEUE	972	#if EV_USE_KQUEUE
646	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	973	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
647	#endif	974	#endif
648	#if EV_USE_EPOLL	975	#if EV_USE_EPOLL
649	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	976	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
650	#endif	977	#endif
651	#if EV_USE_POLL	978	#if EV_USE_POLL
652	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	979	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
653	#endif	980	#endif
654	#if EV_USE_SELECT	981	#if EV_USE_SELECT
655	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	982	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
656	#endif	983	#endif
657		984
658	method = 0;	985	for (i = NUMPRI; i--; )
659	/*TODO*/	986	array_free (pending, [i]);
660	}
661		987
662	void	988	/* have to use the microsoft-never-gets-it-right macro */
		989	array_free (fdchange, EMPTY0);
		990	array_free (timer, EMPTY0);
		991	#if EV_PERIODIC_ENABLE
		992	array_free (periodic, EMPTY0);
		993	#endif
		994	array_free (idle, EMPTY0);
		995	array_free (prepare, EMPTY0);
		996	array_free (check, EMPTY0);
		997
		998	backend = 0;
		999	}
		1000
		1001	void inline_size infy_fork (EV_P);
		1002
		1003	void inline_size
663	loop_fork (EV_P)	1004	loop_fork (EV_P)
664	{	1005	{
665	/*TODO*/	1006	#if EV_USE_PORT
		1007	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1008	#endif
		1009	#if EV_USE_KQUEUE
		1010	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1011	#endif
666	#if EV_USE_EPOLL	1012	#if EV_USE_EPOLL
667	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1013	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
668	#endif	1014	#endif
669	#if EV_USE_KQUEUE	1015	#if EV_USE_INOTIFY
670	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1016	infy_fork (EV_A);
671	#endif	1017	#endif
		1018
		1019	if (ev_is_active (&sigev))
		1020	{
		1021	/* default loop */
		1022
		1023	ev_ref (EV_A);
		1024	ev_io_stop (EV_A_ &sigev);
		1025	close (sigpipe [0]);
		1026	close (sigpipe [1]);
		1027
		1028	while (pipe (sigpipe))
		1029	syserr ("(libev) error creating pipe");
		1030
		1031	siginit (EV_A);
		1032	}
		1033
		1034	postfork = 0;
672	}	1035	}
673		1036
674	#if EV_MULTIPLICITY	1037	#if EV_MULTIPLICITY
675	struct ev_loop *	1038	struct ev_loop *
676	ev_loop_new (int methods)	1039	ev_loop_new (unsigned int flags)
677	{	1040	{
678	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));	1041	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
679		1042
		1043	memset (loop, 0, sizeof (struct ev_loop));
		1044
680	loop_init (EV_A_ methods);	1045	loop_init (EV_A_ flags);
681		1046
682	if (ev_method (EV_A))	1047	if (ev_backend (EV_A))
683	return loop;	1048	return loop;
684		1049
685	return 0;	1050	return 0;
686	}	1051	}
687		1052
688	void	1053	void
689	ev_loop_destroy (EV_P)	1054	ev_loop_destroy (EV_P)
690	{	1055	{
691	loop_destroy (EV_A);	1056	loop_destroy (EV_A);
692	free (loop);	1057	ev_free (loop);
693	}	1058	}
694		1059
695	void	1060	void
696	ev_loop_fork (EV_P)	1061	ev_loop_fork (EV_P)
697	{	1062	{
698	loop_fork (EV_A);	1063	postfork = 1;
699	}	1064	}
700		1065
701	#endif	1066	#endif
702		1067
703	#if EV_MULTIPLICITY	1068	#if EV_MULTIPLICITY
704	struct ev_loop default_loop_struct;
705	static struct ev_loop *default_loop;
706
707	struct ev_loop *	1069	struct ev_loop *
		1070	ev_default_loop_init (unsigned int flags)
708	#else	1071	#else
709	static int default_loop;
710
711	int	1072	int
		1073	ev_default_loop (unsigned int flags)
712	#endif	1074	#endif
713	ev_default_loop (int methods)
714	{	1075	{
715	if (sigpipe [0] == sigpipe [1])	1076	if (sigpipe [0] == sigpipe [1])
716	if (pipe (sigpipe))	1077	if (pipe (sigpipe))
717	return 0;	1078	return 0;
718		1079
719	if (!default_loop)	1080	if (!ev_default_loop_ptr)
720	{	1081	{
721	#if EV_MULTIPLICITY	1082	#if EV_MULTIPLICITY
722	struct ev_loop *loop = default_loop = &default_loop_struct;	1083	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
723	#else	1084	#else
724	default_loop = 1;	1085	ev_default_loop_ptr = 1;
725	#endif	1086	#endif
726		1087
727	loop_init (EV_A_ methods);	1088	loop_init (EV_A_ flags);
728		1089
729	if (ev_method (EV_A))	1090	if (ev_backend (EV_A))
730	{	1091	{
731	ev_watcher_init (&sigev, sigcb);
732	ev_set_priority (&sigev, EV_MAXPRI);
733	siginit (EV_A);	1092	siginit (EV_A);
734		1093
735	#ifndef WIN32	1094	#ifndef _WIN32
736	ev_signal_init (&childev, childcb, SIGCHLD);	1095	ev_signal_init (&childev, childcb, SIGCHLD);
737	ev_set_priority (&childev, EV_MAXPRI);	1096	ev_set_priority (&childev, EV_MAXPRI);
738	ev_signal_start (EV_A_ &childev);	1097	ev_signal_start (EV_A_ &childev);
739	ev_unref (EV_A); /* child watcher should not keep loop alive */	1098	ev_unref (EV_A); /* child watcher should not keep loop alive */
740	#endif	1099	#endif
741	}	1100	}
742	else	1101	else
743	default_loop = 0;	1102	ev_default_loop_ptr = 0;
744	}	1103	}
745		1104
746	return default_loop;	1105	return ev_default_loop_ptr;
747	}	1106	}
748		1107
749	void	1108	void
750	ev_default_destroy (void)	1109	ev_default_destroy (void)
751	{	1110	{
752	#if EV_MULTIPLICITY	1111	#if EV_MULTIPLICITY
753	struct ev_loop *loop = default_loop;	1112	struct ev_loop *loop = ev_default_loop_ptr;
754	#endif	1113	#endif
755		1114
		1115	#ifndef _WIN32
756	ev_ref (EV_A); /* child watcher */	1116	ev_ref (EV_A); /* child watcher */
757	ev_signal_stop (EV_A_ &childev);	1117	ev_signal_stop (EV_A_ &childev);
		1118	#endif
758		1119
759	ev_ref (EV_A); /* signal watcher */	1120	ev_ref (EV_A); /* signal watcher */
760	ev_io_stop (EV_A_ &sigev);	1121	ev_io_stop (EV_A_ &sigev);
761		1122
762	close (sigpipe [0]); sigpipe [0] = 0;	1123	close (sigpipe [0]); sigpipe [0] = 0;
…		…
767		1128
768	void	1129	void
769	ev_default_fork (void)	1130	ev_default_fork (void)
770	{	1131	{
771	#if EV_MULTIPLICITY	1132	#if EV_MULTIPLICITY
772	struct ev_loop *loop = default_loop;	1133	struct ev_loop *loop = ev_default_loop_ptr;
773	#endif	1134	#endif
774		1135
775	loop_fork (EV_A);	1136	if (backend)
776		1137	postfork = 1;
777	ev_io_stop (EV_A_ &sigev);
778	close (sigpipe [0]);
779	close (sigpipe [1]);
780	pipe (sigpipe);
781
782	ev_ref (EV_A); /* signal watcher */
783	siginit (EV_A);
784	}	1138	}
785		1139
786	/*****************************************************************************/	1140	/*****************************************************************************/
787		1141
788	static void	1142	int inline_size
		1143	any_pending (EV_P)
		1144	{
		1145	int pri;
		1146
		1147	for (pri = NUMPRI; pri--; )
		1148	if (pendingcnt [pri])
		1149	return 1;
		1150
		1151	return 0;
		1152	}
		1153
		1154	void inline_speed
789	call_pending (EV_P)	1155	call_pending (EV_P)
790	{	1156	{
791	int pri;	1157	int pri;
792		1158
793	for (pri = NUMPRI; pri--; )	1159	for (pri = NUMPRI; pri--; )
794	while (pendingcnt [pri])	1160	while (pendingcnt [pri])
795	{	1161	{
796	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1162	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
797		1163
798	if (p->w)	1164	if (expect_true (p->w))
799	{	1165	{
		1166	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1167
800	p->w->pending = 0;	1168	p->w->pending = 0;
801		1169	EV_CB_INVOKE (p->w, p->events);
802	(*(void (**)(EV_P_ W, int))&p->w->cb) (EV_A_ p->w, p->events);
803	}	1170	}
804	}	1171	}
805	}	1172	}
806		1173
807	static void	1174	void inline_size
808	timers_reify (EV_P)	1175	timers_reify (EV_P)
809	{	1176	{
810	while (timercnt && ((WT)timers [0])->at <= mn_now)	1177	while (timercnt && ((WT)timers [0])->at <= mn_now)
811	{	1178	{
812	struct ev_timer *w = timers [0];	1179	ev_timer *w = timers [0];
813		1180
814	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1181	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
815		1182
816	/* first reschedule or stop timer */	1183	/* first reschedule or stop timer */
817	if (w->repeat)	1184	if (w->repeat)
818	{	1185	{
819	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1186	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1187
820	((WT)w)->at = mn_now + w->repeat;	1188	((WT)w)->at += w->repeat;
		1189	if (((WT)w)->at < mn_now)
		1190	((WT)w)->at = mn_now;
		1191
821	downheap ((WT *)timers, timercnt, 0);	1192	downheap ((WT *)timers, timercnt, 0);
822	}	1193	}
823	else	1194	else
824	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1195	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
825		1196
826	event (EV_A_ (W)w, EV_TIMEOUT);	1197	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
827	}	1198	}
828	}	1199	}
829		1200
830	static void	1201	#if EV_PERIODIC_ENABLE
		1202	void inline_size
831	periodics_reify (EV_P)	1203	periodics_reify (EV_P)
832	{	1204	{
833	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1205	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
834	{	1206	{
835	struct ev_periodic *w = periodics [0];	1207	ev_periodic *w = periodics [0];
836		1208
837	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1209	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
838		1210
839	/* first reschedule or stop timer */	1211	/* first reschedule or stop timer */
840	if (w->interval)	1212	if (w->reschedule_cb)
841	{	1213	{
		1214	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1215	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1216	downheap ((WT *)periodics, periodiccnt, 0);
		1217	}
		1218	else if (w->interval)
		1219	{
842	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1220	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
843	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1221	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
844	downheap ((WT *)periodics, periodiccnt, 0);	1222	downheap ((WT *)periodics, periodiccnt, 0);
845	}	1223	}
846	else	1224	else
847	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1225	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
848		1226
849	event (EV_A_ (W)w, EV_PERIODIC);	1227	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
850	}	1228	}
851	}	1229	}
852		1230
853	static void	1231	static void noinline
854	periodics_reschedule (EV_P)	1232	periodics_reschedule (EV_P)
855	{	1233	{
856	int i;	1234	int i;
857		1235
858	/* adjust periodics after time jump */	1236	/* adjust periodics after time jump */
859	for (i = 0; i < periodiccnt; ++i)	1237	for (i = 0; i < periodiccnt; ++i)
860	{	1238	{
861	struct ev_periodic *w = periodics [i];	1239	ev_periodic *w = periodics [i];
862		1240
		1241	if (w->reschedule_cb)
		1242	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
863	if (w->interval)	1243	else if (w->interval)
864	{
865	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1244	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
866
867	if (fabs (diff) >= 1e-4)
868	{
869	ev_periodic_stop (EV_A_ w);
870	ev_periodic_start (EV_A_ w);
871
872	i = 0; /* restart loop, inefficient, but time jumps should be rare */
873	}
874	}
875	}	1245	}
876	}
877		1246
878	inline int	1247	/* now rebuild the heap */
		1248	for (i = periodiccnt >> 1; i--; )
		1249	downheap ((WT *)periodics, periodiccnt, i);
		1250	}
		1251	#endif
		1252
		1253	int inline_size
879	time_update_monotonic (EV_P)	1254	time_update_monotonic (EV_P)
880	{	1255	{
881	mn_now = get_clock ();	1256	mn_now = get_clock ();
882		1257
883	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1258	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
884	{	1259	{
885	rt_now = rtmn_diff + mn_now;	1260	ev_rt_now = rtmn_diff + mn_now;
886	return 0;	1261	return 0;
887	}	1262	}
888	else	1263	else
889	{	1264	{
890	now_floor = mn_now;	1265	now_floor = mn_now;
891	rt_now = ev_time ();	1266	ev_rt_now = ev_time ();
892	return 1;	1267	return 1;
893	}	1268	}
894	}	1269	}
895		1270
896	static void	1271	void inline_size
897	time_update (EV_P)	1272	time_update (EV_P)
898	{	1273	{
899	int i;	1274	int i;
900		1275
901	#if EV_USE_MONOTONIC	1276	#if EV_USE_MONOTONIC
…		…
903	{	1278	{
904	if (time_update_monotonic (EV_A))	1279	if (time_update_monotonic (EV_A))
905	{	1280	{
906	ev_tstamp odiff = rtmn_diff;	1281	ev_tstamp odiff = rtmn_diff;
907		1282
908	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1283	/* loop a few times, before making important decisions.
		1284	* on the choice of "4": one iteration isn't enough,
		1285	* in case we get preempted during the calls to
		1286	* ev_time and get_clock. a second call is almost guaranteed
		1287	* to succeed in that case, though. and looping a few more times
		1288	* doesn't hurt either as we only do this on time-jumps or
		1289	* in the unlikely event of having been preempted here.
		1290	*/
		1291	for (i = 4; --i; )
909	{	1292	{
910	rtmn_diff = rt_now - mn_now;	1293	rtmn_diff = ev_rt_now - mn_now;
911		1294
912	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1295	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
913	return; /* all is well */	1296	return; /* all is well */
914		1297
915	rt_now = ev_time ();	1298	ev_rt_now = ev_time ();
916	mn_now = get_clock ();	1299	mn_now = get_clock ();
917	now_floor = mn_now;	1300	now_floor = mn_now;
918	}	1301	}
919		1302
		1303	# if EV_PERIODIC_ENABLE
920	periodics_reschedule (EV_A);	1304	periodics_reschedule (EV_A);
		1305	# endif
921	/* no timer adjustment, as the monotonic clock doesn't jump */	1306	/* no timer adjustment, as the monotonic clock doesn't jump */
922	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1307	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
923	}	1308	}
924	}	1309	}
925	else	1310	else
926	#endif	1311	#endif
927	{	1312	{
928	rt_now = ev_time ();	1313	ev_rt_now = ev_time ();
929		1314
930	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1315	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
931	{	1316	{
		1317	#if EV_PERIODIC_ENABLE
932	periodics_reschedule (EV_A);	1318	periodics_reschedule (EV_A);
		1319	#endif
933		1320
934	/* adjust timers. this is easy, as the offset is the same for all */	1321	/* adjust timers. this is easy, as the offset is the same for all of them */
935	for (i = 0; i < timercnt; ++i)	1322	for (i = 0; i < timercnt; ++i)
936	((WT)timers [i])->at += rt_now - mn_now;	1323	((WT)timers [i])->at += ev_rt_now - mn_now;
937	}	1324	}
938		1325
939	mn_now = rt_now;	1326	mn_now = ev_rt_now;
940	}	1327	}
941	}	1328	}
942		1329
943	void	1330	void
944	ev_ref (EV_P)	1331	ev_ref (EV_P)
…		…
955	static int loop_done;	1342	static int loop_done;
956		1343
957	void	1344	void
958	ev_loop (EV_P_ int flags)	1345	ev_loop (EV_P_ int flags)
959	{	1346	{
960	double block;
961	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1347	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1348	? EVUNLOOP_ONE
		1349	: EVUNLOOP_CANCEL;
		1350
		1351	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
962		1352
963	do	1353	do
964	{	1354	{
		1355	#ifndef _WIN32
		1356	if (expect_false (curpid)) /* penalise the forking check even more */
		1357	if (expect_false (getpid () != curpid))
		1358	{
		1359	curpid = getpid ();
		1360	postfork = 1;
		1361	}
		1362	#endif
		1363
		1364	#if EV_FORK_ENABLE
		1365	/* we might have forked, so queue fork handlers */
		1366	if (expect_false (postfork))
		1367	if (forkcnt)
		1368	{
		1369	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1370	call_pending (EV_A);
		1371	}
		1372	#endif
		1373
965	/* queue check watchers (and execute them) */	1374	/* queue check watchers (and execute them) */
966	if (expect_false (preparecnt))	1375	if (expect_false (preparecnt))
967	{	1376	{
968	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1377	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
969	call_pending (EV_A);	1378	call_pending (EV_A);
970	}	1379	}
971		1380
		1381	if (expect_false (!activecnt))
		1382	break;
		1383
		1384	/* we might have forked, so reify kernel state if necessary */
		1385	if (expect_false (postfork))
		1386	loop_fork (EV_A);
		1387
972	/* update fd-related kernel structures */	1388	/* update fd-related kernel structures */
973	fd_reify (EV_A);	1389	fd_reify (EV_A);
974		1390
975	/* calculate blocking time */	1391	/* calculate blocking time */
		1392	{
		1393	ev_tstamp block;
976		1394
977	/* we only need this for !monotonic clockor timers, but as we basically	1395	if (expect_false (flags & EVLOOP_NONBLOCK || idlecnt || !activecnt))
978	always have timers, we just calculate it always */	1396	block = 0.; /* do not block at all */
		1397	else
		1398	{
		1399	/* update time to cancel out callback processing overhead */
979	#if EV_USE_MONOTONIC	1400	#if EV_USE_MONOTONIC
980	if (expect_true (have_monotonic))	1401	if (expect_true (have_monotonic))
981	time_update_monotonic (EV_A);	1402	time_update_monotonic (EV_A);
982	else	1403	else
983	#endif	1404	#endif
984	{	1405	{
985	rt_now = ev_time ();	1406	ev_rt_now = ev_time ();
986	mn_now = rt_now;	1407	mn_now = ev_rt_now;
987	}	1408	}
988		1409
989	if (flags & EVLOOP_NONBLOCK || idlecnt)
990	block = 0.;
991	else
992	{
993	block = MAX_BLOCKTIME;	1410	block = MAX_BLOCKTIME;
994		1411
995	if (timercnt)	1412	if (timercnt)
996	{	1413	{
997	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1414	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
998	if (block > to) block = to;	1415	if (block > to) block = to;
999	}	1416	}
1000		1417
		1418	#if EV_PERIODIC_ENABLE
1001	if (periodiccnt)	1419	if (periodiccnt)
1002	{	1420	{
1003	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1421	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1004	if (block > to) block = to;	1422	if (block > to) block = to;
1005	}	1423	}
		1424	#endif
1006		1425
1007	if (block < 0.) block = 0.;	1426	if (expect_false (block < 0.)) block = 0.;
1008	}	1427	}
1009		1428
		1429	++loop_count;
1010	method_poll (EV_A_ block);	1430	backend_poll (EV_A_ block);
		1431	}
1011		1432
1012	/* update rt_now, do magic */	1433	/* update ev_rt_now, do magic */
1013	time_update (EV_A);	1434	time_update (EV_A);
1014		1435
1015	/* queue pending timers and reschedule them */	1436	/* queue pending timers and reschedule them */
1016	timers_reify (EV_A); /* relative timers called last */	1437	timers_reify (EV_A); /* relative timers called last */
		1438	#if EV_PERIODIC_ENABLE
1017	periodics_reify (EV_A); /* absolute timers called first */	1439	periodics_reify (EV_A); /* absolute timers called first */
		1440	#endif
1018		1441
1019	/* queue idle watchers unless io or timers are pending */	1442	/* queue idle watchers unless other events are pending */
1020	if (!pendingcnt)	1443	if (idlecnt && !any_pending (EV_A))
1021	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1444	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1022		1445
1023	/* queue check watchers, to be executed first */	1446	/* queue check watchers, to be executed first */
1024	if (checkcnt)	1447	if (expect_false (checkcnt))
1025	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1448	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1026		1449
1027	call_pending (EV_A);	1450	call_pending (EV_A);
		1451
1028	}	1452	}
1029	while (activecnt && !loop_done);	1453	while (expect_true (activecnt && !loop_done));
1030		1454
1031	if (loop_done != 2)	1455	if (loop_done == EVUNLOOP_ONE)
1032	loop_done = 0;	1456	loop_done = EVUNLOOP_CANCEL;
1033	}	1457	}
1034		1458
1035	void	1459	void
1036	ev_unloop (EV_P_ int how)	1460	ev_unloop (EV_P_ int how)
1037	{	1461	{
1038	loop_done = how;	1462	loop_done = how;
1039	}	1463	}
1040		1464
1041	/*****************************************************************************/	1465	/*****************************************************************************/
1042		1466
1043	inline void	1467	void inline_size
1044	wlist_add (WL *head, WL elem)	1468	wlist_add (WL *head, WL elem)
1045	{	1469	{
1046	elem->next = *head;	1470	elem->next = *head;
1047	*head = elem;	1471	*head = elem;
1048	}	1472	}
1049		1473
1050	inline void	1474	void inline_size
1051	wlist_del (WL *head, WL elem)	1475	wlist_del (WL *head, WL elem)
1052	{	1476	{
1053	while (*head)	1477	while (*head)
1054	{	1478	{
1055	if (*head == elem)	1479	if (*head == elem)
…		…
1060		1484
1061	head = &(*head)->next;	1485	head = &(*head)->next;
1062	}	1486	}
1063	}	1487	}
1064		1488
1065	inline void	1489	void inline_speed
1066	ev_clear_pending (EV_P_ W w)	1490	ev_clear_pending (EV_P_ W w)
1067	{	1491	{
1068	if (w->pending)	1492	if (w->pending)
1069	{	1493	{
1070	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1494	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1071	w->pending = 0;	1495	w->pending = 0;
1072	}	1496	}
1073	}	1497	}
1074		1498
1075	inline void	1499	void inline_speed
1076	ev_start (EV_P_ W w, int active)	1500	ev_start (EV_P_ W w, int active)
1077	{	1501	{
1078	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1502	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1079	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1503	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1080		1504
1081	w->active = active;	1505	w->active = active;
1082	ev_ref (EV_A);	1506	ev_ref (EV_A);
1083	}	1507	}
1084		1508
1085	inline void	1509	void inline_size
1086	ev_stop (EV_P_ W w)	1510	ev_stop (EV_P_ W w)
1087	{	1511	{
1088	ev_unref (EV_A);	1512	ev_unref (EV_A);
1089	w->active = 0;	1513	w->active = 0;
1090	}	1514	}
1091		1515
1092	/*****************************************************************************/	1516	/*****************************************************************************/
1093		1517
1094	void	1518	void
1095	ev_io_start (EV_P_ struct ev_io *w)	1519	ev_io_start (EV_P_ ev_io *w)
1096	{	1520	{
1097	int fd = w->fd;	1521	int fd = w->fd;
1098		1522
1099	if (ev_is_active (w))	1523	if (expect_false (ev_is_active (w)))
1100	return;	1524	return;
1101		1525
1102	assert (("ev_io_start called with negative fd", fd >= 0));	1526	assert (("ev_io_start called with negative fd", fd >= 0));
1103		1527
1104	ev_start (EV_A_ (W)w, 1);	1528	ev_start (EV_A_ (W)w, 1);
1105	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1529	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1106	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1530	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1107		1531
1108	fd_change (EV_A_ fd);	1532	fd_change (EV_A_ fd);
1109	}	1533	}
1110		1534
1111	void	1535	void
1112	ev_io_stop (EV_P_ struct ev_io *w)	1536	ev_io_stop (EV_P_ ev_io *w)
1113	{	1537	{
1114	ev_clear_pending (EV_A_ (W)w);	1538	ev_clear_pending (EV_A_ (W)w);
1115	if (!ev_is_active (w))	1539	if (expect_false (!ev_is_active (w)))
1116	return;	1540	return;
		1541
		1542	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1117		1543
1118	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1544	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1119	ev_stop (EV_A_ (W)w);	1545	ev_stop (EV_A_ (W)w);
1120		1546
1121	fd_change (EV_A_ w->fd);	1547	fd_change (EV_A_ w->fd);
1122	}	1548	}
1123		1549
1124	void	1550	void
1125	ev_timer_start (EV_P_ struct ev_timer *w)	1551	ev_timer_start (EV_P_ ev_timer *w)
1126	{	1552	{
1127	if (ev_is_active (w))	1553	if (expect_false (ev_is_active (w)))
1128	return;	1554	return;
1129		1555
1130	((WT)w)->at += mn_now;	1556	((WT)w)->at += mn_now;
1131		1557
1132	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1558	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1133		1559
1134	ev_start (EV_A_ (W)w, ++timercnt);	1560	ev_start (EV_A_ (W)w, ++timercnt);
1135	array_needsize (timers, timermax, timercnt, );	1561	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1136	timers [timercnt - 1] = w;	1562	timers [timercnt - 1] = w;
1137	upheap ((WT *)timers, timercnt - 1);	1563	upheap ((WT *)timers, timercnt - 1);
1138		1564
		1565	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1566	}
		1567
		1568	void
		1569	ev_timer_stop (EV_P_ ev_timer *w)
		1570	{
		1571	ev_clear_pending (EV_A_ (W)w);
		1572	if (expect_false (!ev_is_active (w)))
		1573	return;
		1574
1139	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1575	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1140	}
1141		1576
1142	void	1577	{
1143	ev_timer_stop (EV_P_ struct ev_timer *w)	1578	int active = ((W)w)->active;
1144	{
1145	ev_clear_pending (EV_A_ (W)w);
1146	if (!ev_is_active (w))
1147	return;
1148		1579
1149	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1580	if (expect_true (--active < --timercnt))
1150
1151	if (((W)w)->active < timercnt--)
1152	{	1581	{
1153	timers [((W)w)->active - 1] = timers [timercnt];	1582	timers [active] = timers [timercnt];
1154	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1583	adjustheap ((WT *)timers, timercnt, active);
1155	}	1584	}
		1585	}
1156		1586
1157	((WT)w)->at = w->repeat;	1587	((WT)w)->at -= mn_now;
1158		1588
1159	ev_stop (EV_A_ (W)w);	1589	ev_stop (EV_A_ (W)w);
1160	}	1590	}
1161		1591
1162	void	1592	void
1163	ev_timer_again (EV_P_ struct ev_timer *w)	1593	ev_timer_again (EV_P_ ev_timer *w)
1164	{	1594	{
1165	if (ev_is_active (w))	1595	if (ev_is_active (w))
1166	{	1596	{
1167	if (w->repeat)	1597	if (w->repeat)
1168	{	1598	{
1169	((WT)w)->at = mn_now + w->repeat;	1599	((WT)w)->at = mn_now + w->repeat;
1170	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1600	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1171	}	1601	}
1172	else	1602	else
1173	ev_timer_stop (EV_A_ w);	1603	ev_timer_stop (EV_A_ w);
1174	}	1604	}
1175	else if (w->repeat)	1605	else if (w->repeat)
		1606	{
		1607	w->at = w->repeat;
1176	ev_timer_start (EV_A_ w);	1608	ev_timer_start (EV_A_ w);
		1609	}
1177	}	1610	}
1178		1611
		1612	#if EV_PERIODIC_ENABLE
1179	void	1613	void
1180	ev_periodic_start (EV_P_ struct ev_periodic *w)	1614	ev_periodic_start (EV_P_ ev_periodic *w)
1181	{	1615	{
1182	if (ev_is_active (w))	1616	if (expect_false (ev_is_active (w)))
1183	return;	1617	return;
1184		1618
		1619	if (w->reschedule_cb)
		1620	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1621	else if (w->interval)
		1622	{
1185	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1623	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1186
1187	/* this formula differs from the one in periodic_reify because we do not always round up */	1624	/* this formula differs from the one in periodic_reify because we do not always round up */
1188	if (w->interval)
1189	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1625	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1626	}
1190		1627
1191	ev_start (EV_A_ (W)w, ++periodiccnt);	1628	ev_start (EV_A_ (W)w, ++periodiccnt);
1192	array_needsize (periodics, periodicmax, periodiccnt, );	1629	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1193	periodics [periodiccnt - 1] = w;	1630	periodics [periodiccnt - 1] = w;
1194	upheap ((WT *)periodics, periodiccnt - 1);	1631	upheap ((WT *)periodics, periodiccnt - 1);
1195		1632
		1633	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1634	}
		1635
		1636	void
		1637	ev_periodic_stop (EV_P_ ev_periodic *w)
		1638	{
		1639	ev_clear_pending (EV_A_ (W)w);
		1640	if (expect_false (!ev_is_active (w)))
		1641	return;
		1642
1196	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1643	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1197	}
1198		1644
1199	void	1645	{
1200	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1646	int active = ((W)w)->active;
1201	{
1202	ev_clear_pending (EV_A_ (W)w);
1203	if (!ev_is_active (w))
1204	return;
1205		1647
1206	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1648	if (expect_true (--active < --periodiccnt))
1207
1208	if (((W)w)->active < periodiccnt--)
1209	{	1649	{
1210	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1650	periodics [active] = periodics [periodiccnt];
1211	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1651	adjustheap ((WT *)periodics, periodiccnt, active);
1212	}	1652	}
		1653	}
1213		1654
1214	ev_stop (EV_A_ (W)w);	1655	ev_stop (EV_A_ (W)w);
1215	}	1656	}
1216		1657
1217	void	1658	void
1218	ev_idle_start (EV_P_ struct ev_idle *w)	1659	ev_periodic_again (EV_P_ ev_periodic *w)
1219	{	1660	{
1220	if (ev_is_active (w))	1661	/* TODO: use adjustheap and recalculation */
1221	return;
1222
1223	ev_start (EV_A_ (W)w, ++idlecnt);
1224	array_needsize (idles, idlemax, idlecnt, );
1225	idles [idlecnt - 1] = w;
1226	}
1227
1228	void
1229	ev_idle_stop (EV_P_ struct ev_idle *w)
1230	{
1231	ev_clear_pending (EV_A_ (W)w);
1232	if (ev_is_active (w))
1233	return;
1234
1235	idles [((W)w)->active - 1] = idles [--idlecnt];
1236	ev_stop (EV_A_ (W)w);	1662	ev_periodic_stop (EV_A_ w);
		1663	ev_periodic_start (EV_A_ w);
1237	}	1664	}
1238		1665	#endif
1239	void
1240	ev_prepare_start (EV_P_ struct ev_prepare *w)
1241	{
1242	if (ev_is_active (w))
1243	return;
1244
1245	ev_start (EV_A_ (W)w, ++preparecnt);
1246	array_needsize (prepares, preparemax, preparecnt, );
1247	prepares [preparecnt - 1] = w;
1248	}
1249
1250	void
1251	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1252	{
1253	ev_clear_pending (EV_A_ (W)w);
1254	if (ev_is_active (w))
1255	return;
1256
1257	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1258	ev_stop (EV_A_ (W)w);
1259	}
1260
1261	void
1262	ev_check_start (EV_P_ struct ev_check *w)
1263	{
1264	if (ev_is_active (w))
1265	return;
1266
1267	ev_start (EV_A_ (W)w, ++checkcnt);
1268	array_needsize (checks, checkmax, checkcnt, );
1269	checks [checkcnt - 1] = w;
1270	}
1271
1272	void
1273	ev_check_stop (EV_P_ struct ev_check *w)
1274	{
1275	ev_clear_pending (EV_A_ (W)w);
1276	if (ev_is_active (w))
1277	return;
1278
1279	checks [((W)w)->active - 1] = checks [--checkcnt];
1280	ev_stop (EV_A_ (W)w);
1281	}
1282		1666
1283	#ifndef SA_RESTART	1667	#ifndef SA_RESTART
1284	# define SA_RESTART 0	1668	# define SA_RESTART 0
1285	#endif	1669	#endif
1286		1670
1287	void	1671	void
1288	ev_signal_start (EV_P_ struct ev_signal *w)	1672	ev_signal_start (EV_P_ ev_signal *w)
1289	{	1673	{
1290	#if EV_MULTIPLICITY	1674	#if EV_MULTIPLICITY
1291	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1675	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1292	#endif	1676	#endif
1293	if (ev_is_active (w))	1677	if (expect_false (ev_is_active (w)))
1294	return;	1678	return;
1295		1679
1296	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1680	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1297		1681
1298	ev_start (EV_A_ (W)w, 1);	1682	ev_start (EV_A_ (W)w, 1);
1299	array_needsize (signals, signalmax, w->signum, signals_init);	1683	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1300	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1684	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1301		1685
1302	if (!((WL)w)->next)	1686	if (!((WL)w)->next)
1303	{	1687	{
		1688	#if _WIN32
		1689	signal (w->signum, sighandler);
		1690	#else
1304	struct sigaction sa;	1691	struct sigaction sa;
1305	sa.sa_handler = sighandler;	1692	sa.sa_handler = sighandler;
1306	sigfillset (&sa.sa_mask);	1693	sigfillset (&sa.sa_mask);
1307	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1694	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1308	sigaction (w->signum, &sa, 0);	1695	sigaction (w->signum, &sa, 0);
		1696	#endif
1309	}	1697	}
1310	}	1698	}
1311		1699
1312	void	1700	void
1313	ev_signal_stop (EV_P_ struct ev_signal *w)	1701	ev_signal_stop (EV_P_ ev_signal *w)
1314	{	1702	{
1315	ev_clear_pending (EV_A_ (W)w);	1703	ev_clear_pending (EV_A_ (W)w);
1316	if (!ev_is_active (w))	1704	if (expect_false (!ev_is_active (w)))
1317	return;	1705	return;
1318		1706
1319	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1707	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1320	ev_stop (EV_A_ (W)w);	1708	ev_stop (EV_A_ (W)w);
1321		1709
1322	if (!signals [w->signum - 1].head)	1710	if (!signals [w->signum - 1].head)
1323	signal (w->signum, SIG_DFL);	1711	signal (w->signum, SIG_DFL);
1324	}	1712	}
1325		1713
1326	void	1714	void
1327	ev_child_start (EV_P_ struct ev_child *w)	1715	ev_child_start (EV_P_ ev_child *w)
1328	{	1716	{
1329	#if EV_MULTIPLICITY	1717	#if EV_MULTIPLICITY
1330	assert (("child watchers are only supported in the default loop", loop == default_loop));	1718	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1331	#endif	1719	#endif
1332	if (ev_is_active (w))	1720	if (expect_false (ev_is_active (w)))
1333	return;	1721	return;
1334		1722
1335	ev_start (EV_A_ (W)w, 1);	1723	ev_start (EV_A_ (W)w, 1);
1336	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1724	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1337	}	1725	}
1338		1726
1339	void	1727	void
1340	ev_child_stop (EV_P_ struct ev_child *w)	1728	ev_child_stop (EV_P_ ev_child *w)
1341	{	1729	{
1342	ev_clear_pending (EV_A_ (W)w);	1730	ev_clear_pending (EV_A_ (W)w);
1343	if (ev_is_active (w))	1731	if (expect_false (!ev_is_active (w)))
1344	return;	1732	return;
1345		1733
1346	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1734	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1347	ev_stop (EV_A_ (W)w);	1735	ev_stop (EV_A_ (W)w);
1348	}	1736	}
1349		1737
		1738	#if EV_STAT_ENABLE
		1739
		1740	# ifdef _WIN32
		1741	# undef lstat
		1742	# define lstat(a,b) _stati64 (a,b)
		1743	# endif
		1744
		1745	#define DEF_STAT_INTERVAL 5.0074891
		1746	#define MIN_STAT_INTERVAL 0.1074891
		1747
		1748	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1749
		1750	#if EV_USE_INOTIFY
		1751	# define EV_INOTIFY_BUFSIZE 8192
		1752
		1753	static void noinline
		1754	infy_add (EV_P_ ev_stat *w)
		1755	{
		1756	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);
		1757
		1758	if (w->wd < 0)
		1759	{
		1760	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1761
		1762	/* monitor some parent directory for speedup hints */
		1763	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1764	{
		1765	char path [4096];
		1766	strcpy (path, w->path);
		1767
		1768	do
		1769	{
		1770	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1771	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1772
		1773	char *pend = strrchr (path, '/');
		1774
		1775	if (!pend)
		1776	break; /* whoops, no '/', complain to your admin */
		1777
		1778	*pend = 0;
		1779	w->wd = inotify_add_watch (fs_fd, path, mask);
		1780	}
		1781	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1782	}
		1783	}
		1784	else
		1785	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1786
		1787	if (w->wd >= 0)
		1788	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1789	}
		1790
		1791	static void noinline
		1792	infy_del (EV_P_ ev_stat *w)
		1793	{
		1794	int slot;
		1795	int wd = w->wd;
		1796
		1797	if (wd < 0)
		1798	return;
		1799
		1800	w->wd = -2;
		1801	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1802	wlist_del (&fs_hash [slot].head, (WL)w);
		1803
		1804	/* remove this watcher, if others are watching it, they will rearm */
		1805	inotify_rm_watch (fs_fd, wd);
		1806	}
		1807
		1808	static void noinline
		1809	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1810	{
		1811	if (slot < 0)
		1812	/* overflow, need to check for all hahs slots */
		1813	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1814	infy_wd (EV_A_ slot, wd, ev);
		1815	else
		1816	{
		1817	WL w_;
		1818
		1819	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1820	{
		1821	ev_stat *w = (ev_stat *)w_;
		1822	w_ = w_->next; /* lets us remove this watcher and all before it */
		1823
		1824	if (w->wd == wd || wd == -1)
		1825	{
		1826	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1827	{
		1828	w->wd = -1;
		1829	infy_add (EV_A_ w); /* re-add, no matter what */
		1830	}
		1831
		1832	stat_timer_cb (EV_A_ &w->timer, 0);
		1833	}
		1834	}
		1835	}
		1836	}
		1837
		1838	static void
		1839	infy_cb (EV_P_ ev_io *w, int revents)
		1840	{
		1841	char buf [EV_INOTIFY_BUFSIZE];
		1842	struct inotify_event *ev = (struct inotify_event *)buf;
		1843	int ofs;
		1844	int len = read (fs_fd, buf, sizeof (buf));
		1845
		1846	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1847	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1848	}
		1849
		1850	void inline_size
		1851	infy_init (EV_P)
		1852	{
		1853	if (fs_fd != -2)
		1854	return;
		1855
		1856	fs_fd = inotify_init ();
		1857
		1858	if (fs_fd >= 0)
		1859	{
		1860	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1861	ev_set_priority (&fs_w, EV_MAXPRI);
		1862	ev_io_start (EV_A_ &fs_w);
		1863	}
		1864	}
		1865
		1866	void inline_size
		1867	infy_fork (EV_P)
		1868	{
		1869	int slot;
		1870
		1871	if (fs_fd < 0)
		1872	return;
		1873
		1874	close (fs_fd);
		1875	fs_fd = inotify_init ();
		1876
		1877	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1878	{
		1879	WL w_ = fs_hash [slot].head;
		1880	fs_hash [slot].head = 0;
		1881
		1882	while (w_)
		1883	{
		1884	ev_stat *w = (ev_stat *)w_;
		1885	w_ = w_->next; /* lets us add this watcher */
		1886
		1887	w->wd = -1;
		1888
		1889	if (fs_fd >= 0)
		1890	infy_add (EV_A_ w); /* re-add, no matter what */
		1891	else
		1892	ev_timer_start (EV_A_ &w->timer);
		1893	}
		1894
		1895	}
		1896	}
		1897
		1898	#endif
		1899
		1900	void
		1901	ev_stat_stat (EV_P_ ev_stat *w)
		1902	{
		1903	if (lstat (w->path, &w->attr) < 0)
		1904	w->attr.st_nlink = 0;
		1905	else if (!w->attr.st_nlink)
		1906	w->attr.st_nlink = 1;
		1907	}
		1908
		1909	static void noinline
		1910	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1911	{
		1912	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1913
		1914	/* we copy this here each the time so that */
		1915	/* prev has the old value when the callback gets invoked */
		1916	w->prev = w->attr;
		1917	ev_stat_stat (EV_A_ w);
		1918
		1919	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1920	if (
		1921	w->prev.st_dev != w->attr.st_dev
		1922	|| w->prev.st_ino != w->attr.st_ino
		1923	|| w->prev.st_mode != w->attr.st_mode
		1924	|| w->prev.st_nlink != w->attr.st_nlink
		1925	|| w->prev.st_uid != w->attr.st_uid
		1926	|| w->prev.st_gid != w->attr.st_gid
		1927	|| w->prev.st_rdev != w->attr.st_rdev
		1928	|| w->prev.st_size != w->attr.st_size
		1929	|| w->prev.st_atime != w->attr.st_atime
		1930	|| w->prev.st_mtime != w->attr.st_mtime
		1931	|| w->prev.st_ctime != w->attr.st_ctime
		1932	) {
		1933	#if EV_USE_INOTIFY
		1934	infy_del (EV_A_ w);
		1935	infy_add (EV_A_ w);
		1936	ev_stat_stat (EV_A_ w); /* avoid race... */
		1937	#endif
		1938
		1939	ev_feed_event (EV_A_ w, EV_STAT);
		1940	}
		1941	}
		1942
		1943	void
		1944	ev_stat_start (EV_P_ ev_stat *w)
		1945	{
		1946	if (expect_false (ev_is_active (w)))
		1947	return;
		1948
		1949	/* since we use memcmp, we need to clear any padding data etc. */
		1950	memset (&w->prev, 0, sizeof (ev_statdata));
		1951	memset (&w->attr, 0, sizeof (ev_statdata));
		1952
		1953	ev_stat_stat (EV_A_ w);
		1954
		1955	if (w->interval < MIN_STAT_INTERVAL)
		1956	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1957
		1958	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1959	ev_set_priority (&w->timer, ev_priority (w));
		1960
		1961	#if EV_USE_INOTIFY
		1962	infy_init (EV_A);
		1963
		1964	if (fs_fd >= 0)
		1965	infy_add (EV_A_ w);
		1966	else
		1967	#endif
		1968	ev_timer_start (EV_A_ &w->timer);
		1969
		1970	ev_start (EV_A_ (W)w, 1);
		1971	}
		1972
		1973	void
		1974	ev_stat_stop (EV_P_ ev_stat *w)
		1975	{
		1976	ev_clear_pending (EV_A_ (W)w);
		1977	if (expect_false (!ev_is_active (w)))
		1978	return;
		1979
		1980	#if EV_USE_INOTIFY
		1981	infy_del (EV_A_ w);
		1982	#endif
		1983	ev_timer_stop (EV_A_ &w->timer);
		1984
		1985	ev_stop (EV_A_ (W)w);
		1986	}
		1987	#endif
		1988
		1989	void
		1990	ev_idle_start (EV_P_ ev_idle *w)
		1991	{
		1992	if (expect_false (ev_is_active (w)))
		1993	return;
		1994
		1995	ev_start (EV_A_ (W)w, ++idlecnt);
		1996	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1997	idles [idlecnt - 1] = w;
		1998	}
		1999
		2000	void
		2001	ev_idle_stop (EV_P_ ev_idle *w)
		2002	{
		2003	ev_clear_pending (EV_A_ (W)w);
		2004	if (expect_false (!ev_is_active (w)))
		2005	return;
		2006
		2007	{
		2008	int active = ((W)w)->active;
		2009	idles [active - 1] = idles [--idlecnt];
		2010	((W)idles [active - 1])->active = active;
		2011	}
		2012
		2013	ev_stop (EV_A_ (W)w);
		2014	}
		2015
		2016	void
		2017	ev_prepare_start (EV_P_ ev_prepare *w)
		2018	{
		2019	if (expect_false (ev_is_active (w)))
		2020	return;
		2021
		2022	ev_start (EV_A_ (W)w, ++preparecnt);
		2023	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2024	prepares [preparecnt - 1] = w;
		2025	}
		2026
		2027	void
		2028	ev_prepare_stop (EV_P_ ev_prepare *w)
		2029	{
		2030	ev_clear_pending (EV_A_ (W)w);
		2031	if (expect_false (!ev_is_active (w)))
		2032	return;
		2033
		2034	{
		2035	int active = ((W)w)->active;
		2036	prepares [active - 1] = prepares [--preparecnt];
		2037	((W)prepares [active - 1])->active = active;
		2038	}
		2039
		2040	ev_stop (EV_A_ (W)w);
		2041	}
		2042
		2043	void
		2044	ev_check_start (EV_P_ ev_check *w)
		2045	{
		2046	if (expect_false (ev_is_active (w)))
		2047	return;
		2048
		2049	ev_start (EV_A_ (W)w, ++checkcnt);
		2050	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2051	checks [checkcnt - 1] = w;
		2052	}
		2053
		2054	void
		2055	ev_check_stop (EV_P_ ev_check *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	checks [active - 1] = checks [--checkcnt];
		2064	((W)checks [active - 1])->active = active;
		2065	}
		2066
		2067	ev_stop (EV_A_ (W)w);
		2068	}
		2069
		2070	#if EV_EMBED_ENABLE
		2071	void noinline
		2072	ev_embed_sweep (EV_P_ ev_embed *w)
		2073	{
		2074	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2075	}
		2076
		2077	static void
		2078	embed_cb (EV_P_ ev_io *io, int revents)
		2079	{
		2080	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2081
		2082	if (ev_cb (w))
		2083	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2084	else
		2085	ev_embed_sweep (loop, w);
		2086	}
		2087
		2088	void
		2089	ev_embed_start (EV_P_ ev_embed *w)
		2090	{
		2091	if (expect_false (ev_is_active (w)))
		2092	return;
		2093
		2094	{
		2095	struct ev_loop *loop = w->loop;
		2096	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2097	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2098	}
		2099
		2100	ev_set_priority (&w->io, ev_priority (w));
		2101	ev_io_start (EV_A_ &w->io);
		2102
		2103	ev_start (EV_A_ (W)w, 1);
		2104	}
		2105
		2106	void
		2107	ev_embed_stop (EV_P_ ev_embed *w)
		2108	{
		2109	ev_clear_pending (EV_A_ (W)w);
		2110	if (expect_false (!ev_is_active (w)))
		2111	return;
		2112
		2113	ev_io_stop (EV_A_ &w->io);
		2114
		2115	ev_stop (EV_A_ (W)w);
		2116	}
		2117	#endif
		2118
		2119	#if EV_FORK_ENABLE
		2120	void
		2121	ev_fork_start (EV_P_ ev_fork *w)
		2122	{
		2123	if (expect_false (ev_is_active (w)))
		2124	return;
		2125
		2126	ev_start (EV_A_ (W)w, ++forkcnt);
		2127	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2128	forks [forkcnt - 1] = w;
		2129	}
		2130
		2131	void
		2132	ev_fork_stop (EV_P_ ev_fork *w)
		2133	{
		2134	ev_clear_pending (EV_A_ (W)w);
		2135	if (expect_false (!ev_is_active (w)))
		2136	return;
		2137
		2138	{
		2139	int active = ((W)w)->active;
		2140	forks [active - 1] = forks [--forkcnt];
		2141	((W)forks [active - 1])->active = active;
		2142	}
		2143
		2144	ev_stop (EV_A_ (W)w);
		2145	}
		2146	#endif
		2147
1350	/*****************************************************************************/	2148	/*****************************************************************************/
1351		2149
1352	struct ev_once	2150	struct ev_once
1353	{	2151	{
1354	struct ev_io io;	2152	ev_io io;
1355	struct ev_timer to;	2153	ev_timer to;
1356	void (*cb)(int revents, void *arg);	2154	void (*cb)(int revents, void *arg);
1357	void *arg;	2155	void *arg;
1358	};	2156	};
1359		2157
1360	static void	2158	static void
…		…
1363	void (*cb)(int revents, void *arg) = once->cb;	2161	void (*cb)(int revents, void *arg) = once->cb;
1364	void *arg = once->arg;	2162	void *arg = once->arg;
1365		2163
1366	ev_io_stop (EV_A_ &once->io);	2164	ev_io_stop (EV_A_ &once->io);
1367	ev_timer_stop (EV_A_ &once->to);	2165	ev_timer_stop (EV_A_ &once->to);
1368	free (once);	2166	ev_free (once);
1369		2167
1370	cb (revents, arg);	2168	cb (revents, arg);
1371	}	2169	}
1372		2170
1373	static void	2171	static void
1374	once_cb_io (EV_P_ struct ev_io *w, int revents)	2172	once_cb_io (EV_P_ ev_io *w, int revents)
1375	{	2173	{
1376	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2174	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1377	}	2175	}
1378		2176
1379	static void	2177	static void
1380	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2178	once_cb_to (EV_P_ ev_timer *w, int revents)
1381	{	2179	{
1382	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2180	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1383	}	2181	}
1384		2182
1385	void	2183	void
1386	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2184	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1387	{	2185	{
1388	struct ev_once *once = malloc (sizeof (struct ev_once));	2186	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1389		2187
1390	if (!once)	2188	if (expect_false (!once))
		2189	{
1391	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2190	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1392	else	2191	return;
1393	{	2192	}
		2193
1394	once->cb = cb;	2194	once->cb = cb;
1395	once->arg = arg;	2195	once->arg = arg;
1396		2196
1397	ev_watcher_init (&once->io, once_cb_io);	2197	ev_init (&once->io, once_cb_io);
1398	if (fd >= 0)	2198	if (fd >= 0)
1399	{	2199	{
1400	ev_io_set (&once->io, fd, events);	2200	ev_io_set (&once->io, fd, events);
1401	ev_io_start (EV_A_ &once->io);	2201	ev_io_start (EV_A_ &once->io);
1402	}	2202	}
1403		2203
1404	ev_watcher_init (&once->to, once_cb_to);	2204	ev_init (&once->to, once_cb_to);
1405	if (timeout >= 0.)	2205	if (timeout >= 0.)
1406	{	2206	{
1407	ev_timer_set (&once->to, timeout, 0.);	2207	ev_timer_set (&once->to, timeout, 0.);
1408	ev_timer_start (EV_A_ &once->to);	2208	ev_timer_start (EV_A_ &once->to);
1409	}
1410	}	2209	}
1411	}	2210	}
1412		2211
		2212	#ifdef __cplusplus
		2213	}
		2214	#endif
		2215

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