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Comparing libev/ev.c (file contents):
Revision 1.60 by root, Sun Nov 4 18:29:44 2007 UTC vs.
Revision 1.160 by root, Sat Dec 1 22:57:20 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
97	#ifndef EV_USE_REALTIME	171	#ifndef EV_USE_PORT
98	# define EV_USE_REALTIME 1	172	# define EV_USE_PORT 0
		173	#endif
		174
		175	#ifndef EV_USE_INOTIFY
		176	# define EV_USE_INOTIFY 0
		177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
		182	# else
		183	# define EV_PID_HASHSIZE 16
		184	# endif
		185	#endif
		186
		187	#ifndef EV_INOTIFY_HASHSIZE
		188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
99	#endif	193	#endif
100		194
101	/**/	195	/**/
102		196
103	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
…		…
108	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
109	# undef EV_USE_REALTIME	203	# undef EV_USE_REALTIME
110	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
111	#endif	205	#endif
112		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
113	/**/	219	/**/
114		220
115	#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) */
116	#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) */
117	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
118	/*#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 */
119
120	#include "ev.h"
121		224
122	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
123	# 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
124	# 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
125	#else	235	#else
126	# define expect(expr,value) (expr)	236	# define expect(expr,value) (expr)
		237	# define inline_speed static
127	# define inline static	238	# define inline_size static
		239	# define noinline
128	#endif	240	#endif
129		241
130	#define expect_false(expr) expect ((expr) != 0, 0)	242	#define expect_false(expr) expect ((expr) != 0, 0)
131	#define expect_true(expr) expect ((expr) != 0, 1)	243	#define expect_true(expr) expect ((expr) != 0, 1)
132		244
133	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
134	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	246	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
135		247
		248	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		249	#define EMPTY2(a,b) /* used to suppress some warnings */
		250
136	typedef struct ev_watcher *W;	251	typedef ev_watcher *W;
137	typedef struct ev_watcher_list *WL;	252	typedef ev_watcher_list *WL;
138	typedef struct ev_watcher_time *WT;	253	typedef ev_watcher_time *WT;
139		254
140	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
141		256
		257	#ifdef _WIN32
		258	# include "ev_win32.c"
		259	#endif
		260
142	/*****************************************************************************/	261	/*****************************************************************************/
143		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
144	typedef struct	313	typedef struct
145	{	314	{
146	struct ev_watcher_list *head;	315	WL head;
147	unsigned char events;	316	unsigned char events;
148	unsigned char reify;	317	unsigned char reify;
		318	#if EV_SELECT_IS_WINSOCKET
		319	SOCKET handle;
		320	#endif
149	} ANFD;	321	} ANFD;
150		322
151	typedef struct	323	typedef struct
152	{	324	{
153	W w;	325	W w;
154	int events;	326	int events;
155	} ANPENDING;	327	} ANPENDING;
156		328
		329	#if EV_USE_INOTIFY
		330	typedef struct
		331	{
		332	WL head;
		333	} ANFS;
		334	#endif
		335
157	#if EV_MULTIPLICITY	336	#if EV_MULTIPLICITY
158		337
159	struct ev_loop	338	struct ev_loop
160	{	339	{
		340	ev_tstamp ev_rt_now;
		341	#define ev_rt_now ((loop)->ev_rt_now)
161	# define VAR(name,decl) decl;	342	#define VAR(name,decl) decl;
162	# include "ev_vars.h"	343	#include "ev_vars.h"
163	};
164	# undef VAR	344	#undef VAR
		345	};
165	# 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;
166		350
167	#else	351	#else
168		352
		353	ev_tstamp ev_rt_now;
169	# define VAR(name,decl) static decl;	354	#define VAR(name,decl) static decl;
170	# include "ev_vars.h"	355	#include "ev_vars.h"
171	# undef VAR	356	#undef VAR
		357
		358	static int ev_default_loop_ptr;
172		359
173	#endif	360	#endif
174		361
175	/*****************************************************************************/	362	/*****************************************************************************/
176		363
177	inline ev_tstamp	364	ev_tstamp
178	ev_time (void)	365	ev_time (void)
179	{	366	{
180	#if EV_USE_REALTIME	367	#if EV_USE_REALTIME
181	struct timespec ts;	368	struct timespec ts;
182	clock_gettime (CLOCK_REALTIME, &ts);	369	clock_gettime (CLOCK_REALTIME, &ts);
…		…
186	gettimeofday (&tv, 0);	373	gettimeofday (&tv, 0);
187	return tv.tv_sec + tv.tv_usec * 1e-6;	374	return tv.tv_sec + tv.tv_usec * 1e-6;
188	#endif	375	#endif
189	}	376	}
190		377
191	inline ev_tstamp	378	ev_tstamp inline_size
192	get_clock (void)	379	get_clock (void)
193	{	380	{
194	#if EV_USE_MONOTONIC	381	#if EV_USE_MONOTONIC
195	if (expect_true (have_monotonic))	382	if (expect_true (have_monotonic))
196	{	383	{
…		…
201	#endif	388	#endif
202		389
203	return ev_time ();	390	return ev_time ();
204	}	391	}
205		392
		393	#if EV_MULTIPLICITY
206	ev_tstamp	394	ev_tstamp
207	ev_now (EV_P)	395	ev_now (EV_P)
208	{	396	{
209	return rt_now;	397	return ev_rt_now;
210	}	398	}
		399	#endif
211		400
212	#define array_roundsize(base,n) ((n) | 4 & ~3)	401	#define array_roundsize(type,n) (((n) | 4) & ~3)
213		402
214	#define array_needsize(base,cur,cnt,init) \	403	#define array_needsize(type,base,cur,cnt,init) \
215	if (expect_false ((cnt) > cur)) \	404	if (expect_false ((cnt) > cur)) \
216	{ \	405	{ \
217	int newcnt = cur; \	406	int newcnt = cur; \
218	do \	407	do \
219	{ \	408	{ \
220	newcnt = array_roundsize (base, newcnt << 1); \	409	newcnt = array_roundsize (type, newcnt << 1); \
221	} \	410	} \
222	while ((cnt) > newcnt); \	411	while ((cnt) > newcnt); \
223	\	412	\
224	base = realloc (base, sizeof (*base) * (newcnt)); \	413	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
225	init (base + cur, newcnt - cur); \	414	init (base + cur, newcnt - cur); \
226	cur = newcnt; \	415	cur = newcnt; \
227	}	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;
228		428
229	/*****************************************************************************/	429	/*****************************************************************************/
230		430
231	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
232	anfds_init (ANFD *base, int count)	460	anfds_init (ANFD *base, int count)
233	{	461	{
234	while (count--)	462	while (count--)
235	{	463	{
236	base->head = 0;	464	base->head = 0;
…		…
239		467
240	++base;	468	++base;
241	}	469	}
242	}	470	}
243		471
244	static void	472	void inline_speed
245	event (EV_P_ W w, int events)
246	{
247	if (w->pending)
248	{
249	pendings [ABSPRI (w)][w->pending - 1].events |= events;
250	return;
251	}
252
253	w->pending = ++pendingcnt [ABSPRI (w)];
254	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
255	pendings [ABSPRI (w)][w->pending - 1].w = w;
256	pendings [ABSPRI (w)][w->pending - 1].events = events;
257	}
258
259	static void
260	queue_events (EV_P_ W *events, int eventcnt, int type)
261	{
262	int i;
263
264	for (i = 0; i < eventcnt; ++i)
265	event (EV_A_ events [i], type);
266	}
267
268	static void
269	fd_event (EV_P_ int fd, int events)	473	fd_event (EV_P_ int fd, int revents)
270	{	474	{
271	ANFD *anfd = anfds + fd;	475	ANFD *anfd = anfds + fd;
272	struct ev_io *w;	476	ev_io *w;
273		477
274	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)
275	{	479	{
276	int ev = w->events & events;	480	int ev = w->events & revents;
277		481
278	if (ev)	482	if (ev)
279	event (EV_A_ (W)w, ev);	483	ev_feed_event (EV_A_ (W)w, ev);
280	}	484	}
281	}	485	}
282		486
283	/*****************************************************************************/	487	void
		488	ev_feed_fd_event (EV_P_ int fd, int revents)
		489	{
		490	fd_event (EV_A_ fd, revents);
		491	}
284		492
285	static void	493	void inline_size
286	fd_reify (EV_P)	494	fd_reify (EV_P)
287	{	495	{
288	int i;	496	int i;
289		497
290	for (i = 0; i < fdchangecnt; ++i)	498	for (i = 0; i < fdchangecnt; ++i)
291	{	499	{
292	int fd = fdchanges [i];	500	int fd = fdchanges [i];
293	ANFD *anfd = anfds + fd;	501	ANFD *anfd = anfds + fd;
294	struct ev_io *w;	502	ev_io *w;
295		503
296	int events = 0;	504	int events = 0;
297		505
298	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)
299	events |= w->events;	507	events |= w->events;
300		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
301	anfd->reify = 0;	518	anfd->reify = 0;
302		519
303	if (anfd->events != events)
304	{
305	method_modify (EV_A_ fd, anfd->events, events);	520	backend_modify (EV_A_ fd, anfd->events, events);
306	anfd->events = events;	521	anfd->events = events;
307	}
308	}	522	}
309		523
310	fdchangecnt = 0;	524	fdchangecnt = 0;
311	}	525	}
312		526
313	static void	527	void inline_size
314	fd_change (EV_P_ int fd)	528	fd_change (EV_P_ int fd)
315	{	529	{
316	if (anfds [fd].reify || fdchangecnt < 0)	530	if (expect_false (anfds [fd].reify))
317	return;	531	return;
318		532
319	anfds [fd].reify = 1;	533	anfds [fd].reify = 1;
320		534
321	++fdchangecnt;	535	++fdchangecnt;
322	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	536	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
323	fdchanges [fdchangecnt - 1] = fd;	537	fdchanges [fdchangecnt - 1] = fd;
324	}	538	}
325		539
326	static void	540	void inline_speed
327	fd_kill (EV_P_ int fd)	541	fd_kill (EV_P_ int fd)
328	{	542	{
329	struct ev_io *w;	543	ev_io *w;
330		544
331	while ((w = (struct ev_io *)anfds [fd].head))	545	while ((w = (ev_io *)anfds [fd].head))
332	{	546	{
333	ev_io_stop (EV_A_ w);	547	ev_io_stop (EV_A_ w);
334	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);
335	}	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
336	}	560	}
337		561
338	/* called on EBADF to verify fds */	562	/* called on EBADF to verify fds */
339	static void	563	static void noinline
340	fd_ebadf (EV_P)	564	fd_ebadf (EV_P)
341	{	565	{
342	int fd;	566	int fd;
343		567
344	for (fd = 0; fd < anfdmax; ++fd)	568	for (fd = 0; fd < anfdmax; ++fd)
345	if (anfds [fd].events)	569	if (anfds [fd].events)
346	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	570	if (!fd_valid (fd) == -1 && errno == EBADF)
347	fd_kill (EV_A_ fd);	571	fd_kill (EV_A_ fd);
348	}	572	}
349		573
350	/* 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 */
351	static void	575	static void noinline
352	fd_enomem (EV_P)	576	fd_enomem (EV_P)
353	{	577	{
354	int fd = anfdmax;	578	int fd;
355		579
356	while (fd--)	580	for (fd = anfdmax; fd--; )
357	if (anfds [fd].events)	581	if (anfds [fd].events)
358	{	582	{
359	close (fd);
360	fd_kill (EV_A_ fd);	583	fd_kill (EV_A_ fd);
361	return;	584	return;
362	}	585	}
363	}	586	}
364		587
365	/* 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 */
366	static void	589	static void noinline
367	fd_rearm_all (EV_P)	590	fd_rearm_all (EV_P)
368	{	591	{
369	int fd;	592	int fd;
370		593
371	/* this should be highly optimised to not do anything but set a flag */
372	for (fd = 0; fd < anfdmax; ++fd)	594	for (fd = 0; fd < anfdmax; ++fd)
373	if (anfds [fd].events)	595	if (anfds [fd].events)
374	{	596	{
375	anfds [fd].events = 0;	597	anfds [fd].events = 0;
376	fd_change (EV_A_ fd);	598	fd_change (EV_A_ fd);
377	}	599	}
378	}	600	}
379		601
380	/*****************************************************************************/	602	/*****************************************************************************/
381		603
382	static void	604	void inline_speed
383	upheap (WT *heap, int k)	605	upheap (WT *heap, int k)
384	{	606	{
385	WT w = heap [k];	607	WT w = heap [k];
386		608
387	while (k && heap [k >> 1]->at > w->at)	609	while (k && heap [k >> 1]->at > w->at)
388	{	610	{
389	heap [k] = heap [k >> 1];	611	heap [k] = heap [k >> 1];
390	heap [k]->active = k + 1;	612	((W)heap [k])->active = k + 1;
391	k >>= 1;	613	k >>= 1;
392	}	614	}
393		615
394	heap [k] = w;	616	heap [k] = w;
395	heap [k]->active = k + 1;	617	((W)heap [k])->active = k + 1;
396		618
397	}	619	}
398		620
399	static void	621	void inline_speed
400	downheap (WT *heap, int N, int k)	622	downheap (WT *heap, int N, int k)
401	{	623	{
402	WT w = heap [k];	624	WT w = heap [k];
403		625
404	while (k < (N >> 1))	626	while (k < (N >> 1))
…		…
410		632
411	if (w->at <= heap [j]->at)	633	if (w->at <= heap [j]->at)
412	break;	634	break;
413		635
414	heap [k] = heap [j];	636	heap [k] = heap [j];
415	heap [k]->active = k + 1;	637	((W)heap [k])->active = k + 1;
416	k = j;	638	k = j;
417	}	639	}
418		640
419	heap [k] = w;	641	heap [k] = w;
420	heap [k]->active = k + 1;	642	((W)heap [k])->active = k + 1;
		643	}
		644
		645	void inline_size
		646	adjustheap (WT *heap, int N, int k)
		647	{
		648	upheap (heap, k);
		649	downheap (heap, N, k);
421	}	650	}
422		651
423	/*****************************************************************************/	652	/*****************************************************************************/
424		653
425	typedef struct	654	typedef struct
426	{	655	{
427	struct ev_watcher_list *head;	656	WL head;
428	sig_atomic_t volatile gotsig;	657	sig_atomic_t volatile gotsig;
429	} ANSIG;	658	} ANSIG;
430		659
431	static ANSIG *signals;	660	static ANSIG *signals;
432	static int signalmax;	661	static int signalmax;
433		662
434	static int sigpipe [2];	663	static int sigpipe [2];
435	static sig_atomic_t volatile gotsig;	664	static sig_atomic_t volatile gotsig;
436	static struct ev_io sigev;	665	static ev_io sigev;
437		666
438	static void	667	void inline_size
439	signals_init (ANSIG *base, int count)	668	signals_init (ANSIG *base, int count)
440	{	669	{
441	while (count--)	670	while (count--)
442	{	671	{
443	base->head = 0;	672	base->head = 0;
…		…
448	}	677	}
449		678
450	static void	679	static void
451	sighandler (int signum)	680	sighandler (int signum)
452	{	681	{
		682	#if _WIN32
		683	signal (signum, sighandler);
		684	#endif
		685
453	signals [signum - 1].gotsig = 1;	686	signals [signum - 1].gotsig = 1;
454		687
455	if (!gotsig)	688	if (!gotsig)
456	{	689	{
457	int old_errno = errno;	690	int old_errno = errno;
…		…
459	write (sigpipe [1], &signum, 1);	692	write (sigpipe [1], &signum, 1);
460	errno = old_errno;	693	errno = old_errno;
461	}	694	}
462	}	695	}
463		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
464	static void	717	static void
465	sigcb (EV_P_ struct ev_io *iow, int revents)	718	sigcb (EV_P_ ev_io *iow, int revents)
466	{	719	{
467	struct ev_watcher_list *w;
468	int signum;	720	int signum;
469		721
470	read (sigpipe [0], &revents, 1);	722	read (sigpipe [0], &revents, 1);
471	gotsig = 0;	723	gotsig = 0;
472		724
473	for (signum = signalmax; signum--; )	725	for (signum = signalmax; signum--; )
474	if (signals [signum].gotsig)	726	if (signals [signum].gotsig)
475	{	727	ev_feed_signal_event (EV_A_ signum + 1);
476	signals [signum].gotsig = 0;
477
478	for (w = signals [signum].head; w; w = w->next)
479	event (EV_A_ (W)w, EV_SIGNAL);
480	}
481	}	728	}
482		729
483	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
484	siginit (EV_P)	743	siginit (EV_P)
485	{	744	{
486	#ifndef WIN32	745	fd_intern (sigpipe [0]);
487	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	746	fd_intern (sigpipe [1]);
488	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
489
490	/* rather than sort out wether we really need nb, set it */
491	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
492	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
493	#endif
494		747
495	ev_io_set (&sigev, sigpipe [0], EV_READ);	748	ev_io_set (&sigev, sigpipe [0], EV_READ);
496	ev_io_start (EV_A_ &sigev);	749	ev_io_start (EV_A_ &sigev);
497	ev_unref (EV_A); /* child watcher should not keep loop alive */	750	ev_unref (EV_A); /* child watcher should not keep loop alive */
498	}	751	}
499		752
500	/*****************************************************************************/	753	/*****************************************************************************/
501		754
		755	static ev_child *childs [EV_PID_HASHSIZE];
		756
502	#ifndef WIN32	757	#ifndef _WIN32
503		758
504	static struct ev_child *childs [PID_HASHSIZE];
505	static struct ev_signal childev;	759	static ev_signal childev;
		760
		761	void inline_speed
		762	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		763	{
		764	ev_child *w;
		765
		766	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		767	if (w->pid == pid || !w->pid)
		768	{
		769	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		770	w->rpid = pid;
		771	w->rstatus = status;
		772	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		773	}
		774	}
506		775
507	#ifndef WCONTINUED	776	#ifndef WCONTINUED
508	# define WCONTINUED 0	777	# define WCONTINUED 0
509	#endif	778	#endif
510		779
511	static void	780	static void
512	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
513	{
514	struct ev_child *w;
515
516	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
517	if (w->pid == pid || !w->pid)
518	{
519	w->priority = sw->priority; /* need to do it *now* */
520	w->rpid = pid;
521	w->rstatus = status;
522	event (EV_A_ (W)w, EV_CHILD);
523	}
524	}
525
526	static void
527	childcb (EV_P_ struct ev_signal *sw, int revents)	781	childcb (EV_P_ ev_signal *sw, int revents)
528	{	782	{
529	int pid, status;	783	int pid, status;
530		784
		785	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
531	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	786	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
532	{	787	if (!WCONTINUED
		788	|| errno != EINVAL
		789	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		790	return;
		791
533	/* 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 */
534	event (EV_A_ (W)sw, EV_SIGNAL);	794	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
535		795
536	child_reap (EV_A_ sw, pid, pid, status);	796	child_reap (EV_A_ sw, pid, pid, status);
		797	if (EV_PID_HASHSIZE > 1)
537	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 */
538	}
539	}	799	}
540		800
541	#endif	801	#endif
542		802
543	/*****************************************************************************/	803	/*****************************************************************************/
544		804
		805	#if EV_USE_PORT
		806	# include "ev_port.c"
		807	#endif
545	#if EV_USE_KQUEUE	808	#if EV_USE_KQUEUE
546	# include "ev_kqueue.c"	809	# include "ev_kqueue.c"
547	#endif	810	#endif
548	#if EV_USE_EPOLL	811	#if EV_USE_EPOLL
549	# include "ev_epoll.c"	812	# include "ev_epoll.c"
…		…
566	{	829	{
567	return EV_VERSION_MINOR;	830	return EV_VERSION_MINOR;
568	}	831	}
569		832
570	/* 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 */
571	static int	834	int inline_size
572	enable_secure (void)	835	enable_secure (void)
573	{	836	{
574	#ifdef WIN32	837	#ifdef _WIN32
575	return 0;	838	return 0;
576	#else	839	#else
577	return getuid () != geteuid ()	840	return getuid () != geteuid ()
578	|| getgid () != getegid ();	841	|| getgid () != getegid ();
579	#endif	842	#endif
580	}	843	}
581		844
582	int	845	unsigned int
583	ev_method (EV_P)	846	ev_supported_backends (void)
584	{	847	{
585	return method;	848	unsigned int flags = 0;
586	}
587		849
588	static void	850	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
589	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)
590	{	861	{
591	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)
592	{	895	{
593	#if EV_USE_MONOTONIC	896	#if EV_USE_MONOTONIC
594	{	897	{
595	struct timespec ts;	898	struct timespec ts;
596	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	899	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
597	have_monotonic = 1;	900	have_monotonic = 1;
598	}	901	}
599	#endif	902	#endif
600		903
601	rt_now = ev_time ();	904	ev_rt_now = ev_time ();
602	mn_now = get_clock ();	905	mn_now = get_clock ();
603	now_floor = mn_now;	906	now_floor = mn_now;
604	rtmn_diff = rt_now - mn_now;	907	rtmn_diff = ev_rt_now - mn_now;
605		908
606	if (methods == EVMETHOD_AUTO)	909	/* pid check not overridable via env */
607	if (!enable_secure () && getenv ("LIBEV_METHODS"))	910	#ifndef _WIN32
		911	if (flags & EVFLAG_FORKCHECK)
		912	curpid = getpid ();
		913	#endif
		914
		915	if (!(flags & EVFLAG_NOENV)
		916	&& !enable_secure ()
		917	&& getenv ("LIBEV_FLAGS"))
608	methods = atoi (getenv ("LIBEV_METHODS"));	918	flags = atoi (getenv ("LIBEV_FLAGS"));
609	else
610	methods = EVMETHOD_ANY;
611		919
612	method = 0;	920	if (!(flags & 0x0000ffffUL))
		921	flags |= ev_recommended_backends ();
		922
		923	backend = 0;
		924	backend_fd = -1;
		925	#if EV_USE_INOTIFY
		926	fs_fd = -2;
		927	#endif
		928
		929	#if EV_USE_PORT
		930	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		931	#endif
613	#if EV_USE_KQUEUE	932	#if EV_USE_KQUEUE
614	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	933	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
615	#endif	934	#endif
616	#if EV_USE_EPOLL	935	#if EV_USE_EPOLL
617	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	936	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
618	#endif	937	#endif
619	#if EV_USE_POLL	938	#if EV_USE_POLL
620	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	939	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
621	#endif	940	#endif
622	#if EV_USE_SELECT	941	#if EV_USE_SELECT
623	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	942	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
624	#endif	943	#endif
625	}
626	}
627		944
628	void	945	ev_init (&sigev, sigcb);
		946	ev_set_priority (&sigev, EV_MAXPRI);
		947	}
		948	}
		949
		950	static void noinline
629	loop_destroy (EV_P)	951	loop_destroy (EV_P)
630	{	952	{
		953	int i;
		954
		955	#if EV_USE_INOTIFY
		956	if (fs_fd >= 0)
		957	close (fs_fd);
		958	#endif
		959
		960	if (backend_fd >= 0)
		961	close (backend_fd);
		962
		963	#if EV_USE_PORT
		964	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		965	#endif
631	#if EV_USE_KQUEUE	966	#if EV_USE_KQUEUE
632	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	967	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
633	#endif	968	#endif
634	#if EV_USE_EPOLL	969	#if EV_USE_EPOLL
635	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	970	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
636	#endif	971	#endif
637	#if EV_USE_POLL	972	#if EV_USE_POLL
638	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	973	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
639	#endif	974	#endif
640	#if EV_USE_SELECT	975	#if EV_USE_SELECT
641	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	976	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
642	#endif	977	#endif
643		978
644	method = 0;	979	for (i = NUMPRI; i--; )
645	/*TODO*/	980	array_free (pending, [i]);
646	}
647		981
648	void	982	/* have to use the microsoft-never-gets-it-right macro */
		983	array_free (fdchange, EMPTY0);
		984	array_free (timer, EMPTY0);
		985	#if EV_PERIODIC_ENABLE
		986	array_free (periodic, EMPTY0);
		987	#endif
		988	array_free (idle, EMPTY0);
		989	array_free (prepare, EMPTY0);
		990	array_free (check, EMPTY0);
		991
		992	backend = 0;
		993	}
		994
		995	void inline_size infy_fork (EV_P);
		996
		997	void inline_size
649	loop_fork (EV_P)	998	loop_fork (EV_P)
650	{	999	{
651	/*TODO*/	1000	#if EV_USE_PORT
		1001	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1002	#endif
		1003	#if EV_USE_KQUEUE
		1004	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1005	#endif
652	#if EV_USE_EPOLL	1006	#if EV_USE_EPOLL
653	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1007	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
654	#endif	1008	#endif
655	#if EV_USE_KQUEUE	1009	#if EV_USE_INOTIFY
656	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1010	infy_fork (EV_A);
657	#endif	1011	#endif
		1012
		1013	if (ev_is_active (&sigev))
		1014	{
		1015	/* default loop */
		1016
		1017	ev_ref (EV_A);
		1018	ev_io_stop (EV_A_ &sigev);
		1019	close (sigpipe [0]);
		1020	close (sigpipe [1]);
		1021
		1022	while (pipe (sigpipe))
		1023	syserr ("(libev) error creating pipe");
		1024
		1025	siginit (EV_A);
		1026	}
		1027
		1028	postfork = 0;
658	}	1029	}
659		1030
660	#if EV_MULTIPLICITY	1031	#if EV_MULTIPLICITY
661	struct ev_loop *	1032	struct ev_loop *
662	ev_loop_new (int methods)	1033	ev_loop_new (unsigned int flags)
663	{	1034	{
664	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));	1035	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
665		1036
		1037	memset (loop, 0, sizeof (struct ev_loop));
		1038
666	loop_init (EV_A_ methods);	1039	loop_init (EV_A_ flags);
667		1040
668	if (ev_method (EV_A))	1041	if (ev_backend (EV_A))
669	return loop;	1042	return loop;
670		1043
671	return 0;	1044	return 0;
672	}	1045	}
673		1046
674	void	1047	void
675	ev_loop_destroy (EV_P)	1048	ev_loop_destroy (EV_P)
676	{	1049	{
677	loop_destroy (EV_A);	1050	loop_destroy (EV_A);
678	free (loop);	1051	ev_free (loop);
679	}	1052	}
680		1053
681	void	1054	void
682	ev_loop_fork (EV_P)	1055	ev_loop_fork (EV_P)
683	{	1056	{
684	loop_fork (EV_A);	1057	postfork = 1;
685	}	1058	}
686		1059
687	#endif	1060	#endif
688		1061
689	#if EV_MULTIPLICITY	1062	#if EV_MULTIPLICITY
690	struct ev_loop default_loop_struct;
691	static struct ev_loop *default_loop;
692
693	struct ev_loop *	1063	struct ev_loop *
		1064	ev_default_loop_init (unsigned int flags)
694	#else	1065	#else
695	static int default_loop;
696
697	int	1066	int
		1067	ev_default_loop (unsigned int flags)
698	#endif	1068	#endif
699	ev_default_loop (int methods)
700	{	1069	{
701	if (sigpipe [0] == sigpipe [1])	1070	if (sigpipe [0] == sigpipe [1])
702	if (pipe (sigpipe))	1071	if (pipe (sigpipe))
703	return 0;	1072	return 0;
704		1073
705	if (!default_loop)	1074	if (!ev_default_loop_ptr)
706	{	1075	{
707	#if EV_MULTIPLICITY	1076	#if EV_MULTIPLICITY
708	struct ev_loop *loop = default_loop = &default_loop_struct;	1077	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
709	#else	1078	#else
710	default_loop = 1;	1079	ev_default_loop_ptr = 1;
711	#endif	1080	#endif
712		1081
713	loop_init (EV_A_ methods);	1082	loop_init (EV_A_ flags);
714		1083
715	if (ev_method (EV_A))	1084	if (ev_backend (EV_A))
716	{	1085	{
717	ev_watcher_init (&sigev, sigcb);
718	ev_set_priority (&sigev, EV_MAXPRI);
719	siginit (EV_A);	1086	siginit (EV_A);
720		1087
721	#ifndef WIN32	1088	#ifndef _WIN32
722	ev_signal_init (&childev, childcb, SIGCHLD);	1089	ev_signal_init (&childev, childcb, SIGCHLD);
723	ev_set_priority (&childev, EV_MAXPRI);	1090	ev_set_priority (&childev, EV_MAXPRI);
724	ev_signal_start (EV_A_ &childev);	1091	ev_signal_start (EV_A_ &childev);
725	ev_unref (EV_A); /* child watcher should not keep loop alive */	1092	ev_unref (EV_A); /* child watcher should not keep loop alive */
726	#endif	1093	#endif
727	}	1094	}
728	else	1095	else
729	default_loop = 0;	1096	ev_default_loop_ptr = 0;
730	}	1097	}
731		1098
732	return default_loop;	1099	return ev_default_loop_ptr;
733	}	1100	}
734		1101
735	void	1102	void
736	ev_default_destroy (void)	1103	ev_default_destroy (void)
737	{	1104	{
738	#if EV_MULTIPLICITY	1105	#if EV_MULTIPLICITY
739	struct ev_loop *loop = default_loop;	1106	struct ev_loop *loop = ev_default_loop_ptr;
740	#endif	1107	#endif
741		1108
		1109	#ifndef _WIN32
742	ev_ref (EV_A); /* child watcher */	1110	ev_ref (EV_A); /* child watcher */
743	ev_signal_stop (EV_A_ &childev);	1111	ev_signal_stop (EV_A_ &childev);
		1112	#endif
744		1113
745	ev_ref (EV_A); /* signal watcher */	1114	ev_ref (EV_A); /* signal watcher */
746	ev_io_stop (EV_A_ &sigev);	1115	ev_io_stop (EV_A_ &sigev);
747		1116
748	close (sigpipe [0]); sigpipe [0] = 0;	1117	close (sigpipe [0]); sigpipe [0] = 0;
…		…
753		1122
754	void	1123	void
755	ev_default_fork (void)	1124	ev_default_fork (void)
756	{	1125	{
757	#if EV_MULTIPLICITY	1126	#if EV_MULTIPLICITY
758	struct ev_loop *loop = default_loop;	1127	struct ev_loop *loop = ev_default_loop_ptr;
759	#endif	1128	#endif
760		1129
761	loop_fork (EV_A);	1130	if (backend)
762		1131	postfork = 1;
763	ev_io_stop (EV_A_ &sigev);
764	close (sigpipe [0]);
765	close (sigpipe [1]);
766	pipe (sigpipe);
767
768	ev_ref (EV_A); /* signal watcher */
769	siginit (EV_A);
770	}	1132	}
771		1133
772	/*****************************************************************************/	1134	/*****************************************************************************/
773		1135
774	static void	1136	int inline_size
		1137	any_pending (EV_P)
		1138	{
		1139	int pri;
		1140
		1141	for (pri = NUMPRI; pri--; )
		1142	if (pendingcnt [pri])
		1143	return 1;
		1144
		1145	return 0;
		1146	}
		1147
		1148	void inline_speed
775	call_pending (EV_P)	1149	call_pending (EV_P)
776	{	1150	{
777	int pri;	1151	int pri;
778		1152
779	for (pri = NUMPRI; pri--; )	1153	for (pri = NUMPRI; pri--; )
780	while (pendingcnt [pri])	1154	while (pendingcnt [pri])
781	{	1155	{
782	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1156	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
783		1157
784	if (p->w)	1158	if (expect_true (p->w))
785	{	1159	{
		1160	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1161
786	p->w->pending = 0;	1162	p->w->pending = 0;
787	p->w->cb (EV_A_ p->w, p->events);	1163	EV_CB_INVOKE (p->w, p->events);
788	}	1164	}
789	}	1165	}
790	}	1166	}
791		1167
792	static void	1168	void inline_size
793	timers_reify (EV_P)	1169	timers_reify (EV_P)
794	{	1170	{
795	while (timercnt && timers [0]->at <= mn_now)	1171	while (timercnt && ((WT)timers [0])->at <= mn_now)
796	{	1172	{
797	struct ev_timer *w = timers [0];	1173	ev_timer *w = timers [0];
		1174
		1175	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
798		1176
799	/* first reschedule or stop timer */	1177	/* first reschedule or stop timer */
800	if (w->repeat)	1178	if (w->repeat)
801	{	1179	{
802	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1180	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1181
803	w->at = mn_now + w->repeat;	1182	((WT)w)->at += w->repeat;
		1183	if (((WT)w)->at < mn_now)
		1184	((WT)w)->at = mn_now;
		1185
804	downheap ((WT *)timers, timercnt, 0);	1186	downheap ((WT *)timers, timercnt, 0);
805	}	1187	}
806	else	1188	else
807	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1189	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
808		1190
809	event (EV_A_ (W)w, EV_TIMEOUT);	1191	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
810	}	1192	}
811	}	1193	}
812		1194
813	static void	1195	#if EV_PERIODIC_ENABLE
		1196	void inline_size
814	periodics_reify (EV_P)	1197	periodics_reify (EV_P)
815	{	1198	{
816	while (periodiccnt && periodics [0]->at <= rt_now)	1199	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
817	{	1200	{
818	struct ev_periodic *w = periodics [0];	1201	ev_periodic *w = periodics [0];
		1202
		1203	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
819		1204
820	/* first reschedule or stop timer */	1205	/* first reschedule or stop timer */
821	if (w->interval)	1206	if (w->reschedule_cb)
822	{	1207	{
		1208	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1209	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1210	downheap ((WT *)periodics, periodiccnt, 0);
		1211	}
		1212	else if (w->interval)
		1213	{
823	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1214	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
824	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1215	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
825	downheap ((WT *)periodics, periodiccnt, 0);	1216	downheap ((WT *)periodics, periodiccnt, 0);
826	}	1217	}
827	else	1218	else
828	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1219	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
829		1220
830	event (EV_A_ (W)w, EV_PERIODIC);	1221	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
831	}	1222	}
832	}	1223	}
833		1224
834	static void	1225	static void noinline
835	periodics_reschedule (EV_P)	1226	periodics_reschedule (EV_P)
836	{	1227	{
837	int i;	1228	int i;
838		1229
839	/* adjust periodics after time jump */	1230	/* adjust periodics after time jump */
840	for (i = 0; i < periodiccnt; ++i)	1231	for (i = 0; i < periodiccnt; ++i)
841	{	1232	{
842	struct ev_periodic *w = periodics [i];	1233	ev_periodic *w = periodics [i];
843		1234
		1235	if (w->reschedule_cb)
		1236	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
844	if (w->interval)	1237	else if (w->interval)
845	{
846	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1238	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
847
848	if (fabs (diff) >= 1e-4)
849	{
850	ev_periodic_stop (EV_A_ w);
851	ev_periodic_start (EV_A_ w);
852
853	i = 0; /* restart loop, inefficient, but time jumps should be rare */
854	}
855	}
856	}	1239	}
857	}
858		1240
859	inline int	1241	/* now rebuild the heap */
		1242	for (i = periodiccnt >> 1; i--; )
		1243	downheap ((WT *)periodics, periodiccnt, i);
		1244	}
		1245	#endif
		1246
		1247	int inline_size
860	time_update_monotonic (EV_P)	1248	time_update_monotonic (EV_P)
861	{	1249	{
862	mn_now = get_clock ();	1250	mn_now = get_clock ();
863		1251
864	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1252	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
865	{	1253	{
866	rt_now = rtmn_diff + mn_now;	1254	ev_rt_now = rtmn_diff + mn_now;
867	return 0;	1255	return 0;
868	}	1256	}
869	else	1257	else
870	{	1258	{
871	now_floor = mn_now;	1259	now_floor = mn_now;
872	rt_now = ev_time ();	1260	ev_rt_now = ev_time ();
873	return 1;	1261	return 1;
874	}	1262	}
875	}	1263	}
876		1264
877	static void	1265	void inline_size
878	time_update (EV_P)	1266	time_update (EV_P)
879	{	1267	{
880	int i;	1268	int i;
881		1269
882	#if EV_USE_MONOTONIC	1270	#if EV_USE_MONOTONIC
…		…
884	{	1272	{
885	if (time_update_monotonic (EV_A))	1273	if (time_update_monotonic (EV_A))
886	{	1274	{
887	ev_tstamp odiff = rtmn_diff;	1275	ev_tstamp odiff = rtmn_diff;
888		1276
889	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1277	/* loop a few times, before making important decisions.
		1278	* on the choice of "4": one iteration isn't enough,
		1279	* in case we get preempted during the calls to
		1280	* ev_time and get_clock. a second call is almost guaranteed
		1281	* to succeed in that case, though. and looping a few more times
		1282	* doesn't hurt either as we only do this on time-jumps or
		1283	* in the unlikely event of having been preempted here.
		1284	*/
		1285	for (i = 4; --i; )
890	{	1286	{
891	rtmn_diff = rt_now - mn_now;	1287	rtmn_diff = ev_rt_now - mn_now;
892		1288
893	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1289	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
894	return; /* all is well */	1290	return; /* all is well */
895		1291
896	rt_now = ev_time ();	1292	ev_rt_now = ev_time ();
897	mn_now = get_clock ();	1293	mn_now = get_clock ();
898	now_floor = mn_now;	1294	now_floor = mn_now;
899	}	1295	}
900		1296
		1297	# if EV_PERIODIC_ENABLE
901	periodics_reschedule (EV_A);	1298	periodics_reschedule (EV_A);
		1299	# endif
902	/* no timer adjustment, as the monotonic clock doesn't jump */	1300	/* no timer adjustment, as the monotonic clock doesn't jump */
903	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1301	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
904	}	1302	}
905	}	1303	}
906	else	1304	else
907	#endif	1305	#endif
908	{	1306	{
909	rt_now = ev_time ();	1307	ev_rt_now = ev_time ();
910		1308
911	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1309	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
912	{	1310	{
		1311	#if EV_PERIODIC_ENABLE
913	periodics_reschedule (EV_A);	1312	periodics_reschedule (EV_A);
		1313	#endif
914		1314
915	/* adjust timers. this is easy, as the offset is the same for all */	1315	/* adjust timers. this is easy, as the offset is the same for all of them */
916	for (i = 0; i < timercnt; ++i)	1316	for (i = 0; i < timercnt; ++i)
917	timers [i]->at += rt_now - mn_now;	1317	((WT)timers [i])->at += ev_rt_now - mn_now;
918	}	1318	}
919		1319
920	mn_now = rt_now;	1320	mn_now = ev_rt_now;
921	}	1321	}
922	}	1322	}
923		1323
924	void	1324	void
925	ev_ref (EV_P)	1325	ev_ref (EV_P)
…		…
936	static int loop_done;	1336	static int loop_done;
937		1337
938	void	1338	void
939	ev_loop (EV_P_ int flags)	1339	ev_loop (EV_P_ int flags)
940	{	1340	{
941	double block;
942	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1341	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1342	? EVUNLOOP_ONE
		1343	: EVUNLOOP_CANCEL;
943		1344
944	do	1345	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1346
		1347	while (expect_false (!activecnt))
945	{	1348	{
		1349	#ifndef _WIN32
		1350	if (expect_false (curpid)) /* penalise the forking check even more */
		1351	if (expect_false (getpid () != curpid))
		1352	{
		1353	curpid = getpid ();
		1354	postfork = 1;
		1355	}
		1356	#endif
		1357
		1358	#if EV_FORK_ENABLE
		1359	/* we might have forked, so queue fork handlers */
		1360	if (expect_false (postfork))
		1361	if (forkcnt)
		1362	{
		1363	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1364	call_pending (EV_A);
		1365	}
		1366	#endif
		1367
946	/* queue check watchers (and execute them) */	1368	/* queue check watchers (and execute them) */
947	if (expect_false (preparecnt))	1369	if (expect_false (preparecnt))
948	{	1370	{
949	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1371	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
950	call_pending (EV_A);	1372	call_pending (EV_A);
951	}	1373	}
952		1374
		1375	if (expect_false (!activecnt))
		1376	break;
		1377
		1378	/* we might have forked, so reify kernel state if necessary */
		1379	if (expect_false (postfork))
		1380	loop_fork (EV_A);
		1381
953	/* update fd-related kernel structures */	1382	/* update fd-related kernel structures */
954	fd_reify (EV_A);	1383	fd_reify (EV_A);
955		1384
956	/* calculate blocking time */	1385	/* calculate blocking time */
		1386	{
		1387	ev_tstamp block;
957		1388
958	/* we only need this for !monotonic clockor timers, but as we basically	1389	if (expect_false (flags & EVLOOP_NONBLOCK || idlecnt || !activecnt))
959	always have timers, we just calculate it always */	1390	block = 0.; /* do not block at all */
		1391	else
		1392	{
		1393	/* update time to cancel out callback processing overhead */
960	#if EV_USE_MONOTONIC	1394	#if EV_USE_MONOTONIC
961	if (expect_true (have_monotonic))	1395	if (expect_true (have_monotonic))
962	time_update_monotonic (EV_A);	1396	time_update_monotonic (EV_A);
963	else	1397	else
964	#endif	1398	#endif
965	{	1399	{
966	rt_now = ev_time ();	1400	ev_rt_now = ev_time ();
967	mn_now = rt_now;	1401	mn_now = ev_rt_now;
968	}	1402	}
969		1403
970	if (flags & EVLOOP_NONBLOCK || idlecnt)
971	block = 0.;
972	else
973	{
974	block = MAX_BLOCKTIME;	1404	block = MAX_BLOCKTIME;
975		1405
976	if (timercnt)	1406	if (timercnt)
977	{	1407	{
978	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1408	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
979	if (block > to) block = to;	1409	if (block > to) block = to;
980	}	1410	}
981		1411
		1412	#if EV_PERIODIC_ENABLE
982	if (periodiccnt)	1413	if (periodiccnt)
983	{	1414	{
984	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1415	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
985	if (block > to) block = to;	1416	if (block > to) block = to;
986	}	1417	}
		1418	#endif
987		1419
988	if (block < 0.) block = 0.;	1420	if (expect_false (block < 0.)) block = 0.;
989	}	1421	}
990		1422
991	method_poll (EV_A_ block);	1423	backend_poll (EV_A_ block);
		1424	}
992		1425
993	/* update rt_now, do magic */	1426	/* update ev_rt_now, do magic */
994	time_update (EV_A);	1427	time_update (EV_A);
995		1428
996	/* queue pending timers and reschedule them */	1429	/* queue pending timers and reschedule them */
997	timers_reify (EV_A); /* relative timers called last */	1430	timers_reify (EV_A); /* relative timers called last */
		1431	#if EV_PERIODIC_ENABLE
998	periodics_reify (EV_A); /* absolute timers called first */	1432	periodics_reify (EV_A); /* absolute timers called first */
		1433	#endif
999		1434
1000	/* queue idle watchers unless io or timers are pending */	1435	/* queue idle watchers unless other events are pending */
1001	if (!pendingcnt)	1436	if (idlecnt && !any_pending (EV_A))
1002	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1437	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1003		1438
1004	/* queue check watchers, to be executed first */	1439	/* queue check watchers, to be executed first */
1005	if (checkcnt)	1440	if (expect_false (checkcnt))
1006	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1441	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1007		1442
1008	call_pending (EV_A);	1443	call_pending (EV_A);
1009	}
1010	while (activecnt && !loop_done);
1011		1444
1012	if (loop_done != 2)	1445	if (expect_false (loop_done))
1013	loop_done = 0;	1446	break;
		1447	}
		1448
		1449	if (loop_done == EVUNLOOP_ONE)
		1450	loop_done = EVUNLOOP_CANCEL;
1014	}	1451	}
1015		1452
1016	void	1453	void
1017	ev_unloop (EV_P_ int how)	1454	ev_unloop (EV_P_ int how)
1018	{	1455	{
1019	loop_done = how;	1456	loop_done = how;
1020	}	1457	}
1021		1458
1022	/*****************************************************************************/	1459	/*****************************************************************************/
1023		1460
1024	inline void	1461	void inline_size
1025	wlist_add (WL *head, WL elem)	1462	wlist_add (WL *head, WL elem)
1026	{	1463	{
1027	elem->next = *head;	1464	elem->next = *head;
1028	*head = elem;	1465	*head = elem;
1029	}	1466	}
1030		1467
1031	inline void	1468	void inline_size
1032	wlist_del (WL *head, WL elem)	1469	wlist_del (WL *head, WL elem)
1033	{	1470	{
1034	while (*head)	1471	while (*head)
1035	{	1472	{
1036	if (*head == elem)	1473	if (*head == elem)
…		…
1041		1478
1042	head = &(*head)->next;	1479	head = &(*head)->next;
1043	}	1480	}
1044	}	1481	}
1045		1482
1046	inline void	1483	void inline_speed
1047	ev_clear_pending (EV_P_ W w)	1484	ev_clear_pending (EV_P_ W w)
1048	{	1485	{
1049	if (w->pending)	1486	if (w->pending)
1050	{	1487	{
1051	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1488	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1052	w->pending = 0;	1489	w->pending = 0;
1053	}	1490	}
1054	}	1491	}
1055		1492
1056	inline void	1493	void inline_speed
1057	ev_start (EV_P_ W w, int active)	1494	ev_start (EV_P_ W w, int active)
1058	{	1495	{
1059	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1496	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1060	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1497	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1061		1498
1062	w->active = active;	1499	w->active = active;
1063	ev_ref (EV_A);	1500	ev_ref (EV_A);
1064	}	1501	}
1065		1502
1066	inline void	1503	void inline_size
1067	ev_stop (EV_P_ W w)	1504	ev_stop (EV_P_ W w)
1068	{	1505	{
1069	ev_unref (EV_A);	1506	ev_unref (EV_A);
1070	w->active = 0;	1507	w->active = 0;
1071	}	1508	}
1072		1509
1073	/*****************************************************************************/	1510	/*****************************************************************************/
1074		1511
1075	void	1512	void
1076	ev_io_start (EV_P_ struct ev_io *w)	1513	ev_io_start (EV_P_ ev_io *w)
1077	{	1514	{
1078	int fd = w->fd;	1515	int fd = w->fd;
1079		1516
1080	if (ev_is_active (w))	1517	if (expect_false (ev_is_active (w)))
1081	return;	1518	return;
1082		1519
1083	assert (("ev_io_start called with negative fd", fd >= 0));	1520	assert (("ev_io_start called with negative fd", fd >= 0));
1084		1521
1085	ev_start (EV_A_ (W)w, 1);	1522	ev_start (EV_A_ (W)w, 1);
1086	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1523	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1087	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1524	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1088		1525
1089	fd_change (EV_A_ fd);	1526	fd_change (EV_A_ fd);
1090	}	1527	}
1091		1528
1092	void	1529	void
1093	ev_io_stop (EV_P_ struct ev_io *w)	1530	ev_io_stop (EV_P_ ev_io *w)
1094	{	1531	{
1095	ev_clear_pending (EV_A_ (W)w);	1532	ev_clear_pending (EV_A_ (W)w);
1096	if (!ev_is_active (w))	1533	if (expect_false (!ev_is_active (w)))
1097	return;	1534	return;
		1535
		1536	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1098		1537
1099	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1538	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1100	ev_stop (EV_A_ (W)w);	1539	ev_stop (EV_A_ (W)w);
1101		1540
1102	fd_change (EV_A_ w->fd);	1541	fd_change (EV_A_ w->fd);
1103	}	1542	}
1104		1543
1105	void	1544	void
1106	ev_timer_start (EV_P_ struct ev_timer *w)	1545	ev_timer_start (EV_P_ ev_timer *w)
1107	{	1546	{
1108	if (ev_is_active (w))	1547	if (expect_false (ev_is_active (w)))
1109	return;	1548	return;
1110		1549
1111	w->at += mn_now;	1550	((WT)w)->at += mn_now;
1112		1551
1113	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1552	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1114		1553
1115	ev_start (EV_A_ (W)w, ++timercnt);	1554	ev_start (EV_A_ (W)w, ++timercnt);
1116	array_needsize (timers, timermax, timercnt, );	1555	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1117	timers [timercnt - 1] = w;	1556	timers [timercnt - 1] = w;
1118	upheap ((WT *)timers, timercnt - 1);	1557	upheap ((WT *)timers, timercnt - 1);
1119	}
1120		1558
		1559	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1560	}
		1561
1121	void	1562	void
1122	ev_timer_stop (EV_P_ struct ev_timer *w)	1563	ev_timer_stop (EV_P_ ev_timer *w)
1123	{	1564	{
1124	ev_clear_pending (EV_A_ (W)w);	1565	ev_clear_pending (EV_A_ (W)w);
1125	if (!ev_is_active (w))	1566	if (expect_false (!ev_is_active (w)))
1126	return;	1567	return;
1127		1568
1128	if (w->active < timercnt--)	1569	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1570
		1571	{
		1572	int active = ((W)w)->active;
		1573
		1574	if (expect_true (--active < --timercnt))
1129	{	1575	{
1130	timers [w->active - 1] = timers [timercnt];	1576	timers [active] = timers [timercnt];
1131	downheap ((WT *)timers, timercnt, w->active - 1);	1577	adjustheap ((WT *)timers, timercnt, active);
1132	}	1578	}
		1579	}
1133		1580
1134	w->at = w->repeat;	1581	((WT)w)->at -= mn_now;
1135		1582
1136	ev_stop (EV_A_ (W)w);	1583	ev_stop (EV_A_ (W)w);
1137	}	1584	}
1138		1585
1139	void	1586	void
1140	ev_timer_again (EV_P_ struct ev_timer *w)	1587	ev_timer_again (EV_P_ ev_timer *w)
1141	{	1588	{
1142	if (ev_is_active (w))	1589	if (ev_is_active (w))
1143	{	1590	{
1144	if (w->repeat)	1591	if (w->repeat)
1145	{	1592	{
1146	w->at = mn_now + w->repeat;	1593	((WT)w)->at = mn_now + w->repeat;
1147	downheap ((WT *)timers, timercnt, w->active - 1);	1594	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1148	}	1595	}
1149	else	1596	else
1150	ev_timer_stop (EV_A_ w);	1597	ev_timer_stop (EV_A_ w);
1151	}	1598	}
1152	else if (w->repeat)	1599	else if (w->repeat)
		1600	{
		1601	w->at = w->repeat;
1153	ev_timer_start (EV_A_ w);	1602	ev_timer_start (EV_A_ w);
		1603	}
1154	}	1604	}
1155		1605
		1606	#if EV_PERIODIC_ENABLE
1156	void	1607	void
1157	ev_periodic_start (EV_P_ struct ev_periodic *w)	1608	ev_periodic_start (EV_P_ ev_periodic *w)
1158	{	1609	{
1159	if (ev_is_active (w))	1610	if (expect_false (ev_is_active (w)))
1160	return;	1611	return;
1161		1612
		1613	if (w->reschedule_cb)
		1614	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1615	else if (w->interval)
		1616	{
1162	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1617	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1163
1164	/* this formula differs from the one in periodic_reify because we do not always round up */	1618	/* this formula differs from the one in periodic_reify because we do not always round up */
1165	if (w->interval)
1166	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1619	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1620	}
1167		1621
1168	ev_start (EV_A_ (W)w, ++periodiccnt);	1622	ev_start (EV_A_ (W)w, ++periodiccnt);
1169	array_needsize (periodics, periodicmax, periodiccnt, );	1623	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1170	periodics [periodiccnt - 1] = w;	1624	periodics [periodiccnt - 1] = w;
1171	upheap ((WT *)periodics, periodiccnt - 1);	1625	upheap ((WT *)periodics, periodiccnt - 1);
1172	}
1173		1626
		1627	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1628	}
		1629
1174	void	1630	void
1175	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1631	ev_periodic_stop (EV_P_ ev_periodic *w)
1176	{	1632	{
1177	ev_clear_pending (EV_A_ (W)w);	1633	ev_clear_pending (EV_A_ (W)w);
1178	if (!ev_is_active (w))	1634	if (expect_false (!ev_is_active (w)))
1179	return;	1635	return;
1180		1636
1181	if (w->active < periodiccnt--)	1637	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1638
		1639	{
		1640	int active = ((W)w)->active;
		1641
		1642	if (expect_true (--active < --periodiccnt))
1182	{	1643	{
1183	periodics [w->active - 1] = periodics [periodiccnt];	1644	periodics [active] = periodics [periodiccnt];
1184	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1645	adjustheap ((WT *)periodics, periodiccnt, active);
1185	}	1646	}
		1647	}
1186		1648
1187	ev_stop (EV_A_ (W)w);	1649	ev_stop (EV_A_ (W)w);
1188	}	1650	}
1189		1651
1190	void	1652	void
1191	ev_idle_start (EV_P_ struct ev_idle *w)	1653	ev_periodic_again (EV_P_ ev_periodic *w)
1192	{	1654	{
1193	if (ev_is_active (w))	1655	/* TODO: use adjustheap and recalculation */
1194	return;
1195
1196	ev_start (EV_A_ (W)w, ++idlecnt);
1197	array_needsize (idles, idlemax, idlecnt, );
1198	idles [idlecnt - 1] = w;
1199	}
1200
1201	void
1202	ev_idle_stop (EV_P_ struct ev_idle *w)
1203	{
1204	ev_clear_pending (EV_A_ (W)w);
1205	if (ev_is_active (w))
1206	return;
1207
1208	idles [w->active - 1] = idles [--idlecnt];
1209	ev_stop (EV_A_ (W)w);	1656	ev_periodic_stop (EV_A_ w);
		1657	ev_periodic_start (EV_A_ w);
1210	}	1658	}
1211		1659	#endif
1212	void
1213	ev_prepare_start (EV_P_ struct ev_prepare *w)
1214	{
1215	if (ev_is_active (w))
1216	return;
1217
1218	ev_start (EV_A_ (W)w, ++preparecnt);
1219	array_needsize (prepares, preparemax, preparecnt, );
1220	prepares [preparecnt - 1] = w;
1221	}
1222
1223	void
1224	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1225	{
1226	ev_clear_pending (EV_A_ (W)w);
1227	if (ev_is_active (w))
1228	return;
1229
1230	prepares [w->active - 1] = prepares [--preparecnt];
1231	ev_stop (EV_A_ (W)w);
1232	}
1233
1234	void
1235	ev_check_start (EV_P_ struct ev_check *w)
1236	{
1237	if (ev_is_active (w))
1238	return;
1239
1240	ev_start (EV_A_ (W)w, ++checkcnt);
1241	array_needsize (checks, checkmax, checkcnt, );
1242	checks [checkcnt - 1] = w;
1243	}
1244
1245	void
1246	ev_check_stop (EV_P_ struct ev_check *w)
1247	{
1248	ev_clear_pending (EV_A_ (W)w);
1249	if (ev_is_active (w))
1250	return;
1251
1252	checks [w->active - 1] = checks [--checkcnt];
1253	ev_stop (EV_A_ (W)w);
1254	}
1255		1660
1256	#ifndef SA_RESTART	1661	#ifndef SA_RESTART
1257	# define SA_RESTART 0	1662	# define SA_RESTART 0
1258	#endif	1663	#endif
1259		1664
1260	void	1665	void
1261	ev_signal_start (EV_P_ struct ev_signal *w)	1666	ev_signal_start (EV_P_ ev_signal *w)
1262	{	1667	{
1263	#if EV_MULTIPLICITY	1668	#if EV_MULTIPLICITY
1264	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1669	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1265	#endif	1670	#endif
1266	if (ev_is_active (w))	1671	if (expect_false (ev_is_active (w)))
1267	return;	1672	return;
1268		1673
1269	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1674	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1270		1675
1271	ev_start (EV_A_ (W)w, 1);	1676	ev_start (EV_A_ (W)w, 1);
1272	array_needsize (signals, signalmax, w->signum, signals_init);	1677	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1273	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1678	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1274		1679
1275	if (!w->next)	1680	if (!((WL)w)->next)
1276	{	1681	{
		1682	#if _WIN32
		1683	signal (w->signum, sighandler);
		1684	#else
1277	struct sigaction sa;	1685	struct sigaction sa;
1278	sa.sa_handler = sighandler;	1686	sa.sa_handler = sighandler;
1279	sigfillset (&sa.sa_mask);	1687	sigfillset (&sa.sa_mask);
1280	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1688	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1281	sigaction (w->signum, &sa, 0);	1689	sigaction (w->signum, &sa, 0);
		1690	#endif
1282	}	1691	}
1283	}	1692	}
1284		1693
1285	void	1694	void
1286	ev_signal_stop (EV_P_ struct ev_signal *w)	1695	ev_signal_stop (EV_P_ ev_signal *w)
1287	{	1696	{
1288	ev_clear_pending (EV_A_ (W)w);	1697	ev_clear_pending (EV_A_ (W)w);
1289	if (!ev_is_active (w))	1698	if (expect_false (!ev_is_active (w)))
1290	return;	1699	return;
1291		1700
1292	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1701	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1293	ev_stop (EV_A_ (W)w);	1702	ev_stop (EV_A_ (W)w);
1294		1703
1295	if (!signals [w->signum - 1].head)	1704	if (!signals [w->signum - 1].head)
1296	signal (w->signum, SIG_DFL);	1705	signal (w->signum, SIG_DFL);
1297	}	1706	}
1298		1707
1299	void	1708	void
1300	ev_child_start (EV_P_ struct ev_child *w)	1709	ev_child_start (EV_P_ ev_child *w)
1301	{	1710	{
1302	#if EV_MULTIPLICITY	1711	#if EV_MULTIPLICITY
1303	assert (("child watchers are only supported in the default loop", loop == default_loop));	1712	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1304	#endif	1713	#endif
1305	if (ev_is_active (w))	1714	if (expect_false (ev_is_active (w)))
1306	return;	1715	return;
1307		1716
1308	ev_start (EV_A_ (W)w, 1);	1717	ev_start (EV_A_ (W)w, 1);
1309	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1718	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1310	}	1719	}
1311		1720
1312	void	1721	void
1313	ev_child_stop (EV_P_ struct ev_child *w)	1722	ev_child_stop (EV_P_ ev_child *w)
1314	{	1723	{
1315	ev_clear_pending (EV_A_ (W)w);	1724	ev_clear_pending (EV_A_ (W)w);
1316	if (ev_is_active (w))	1725	if (expect_false (!ev_is_active (w)))
1317	return;	1726	return;
1318		1727
1319	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1728	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1320	ev_stop (EV_A_ (W)w);	1729	ev_stop (EV_A_ (W)w);
1321	}	1730	}
1322		1731
		1732	#if EV_STAT_ENABLE
		1733
		1734	# ifdef _WIN32
		1735	# undef lstat
		1736	# define lstat(a,b) _stati64 (a,b)
		1737	# endif
		1738
		1739	#define DEF_STAT_INTERVAL 5.0074891
		1740	#define MIN_STAT_INTERVAL 0.1074891
		1741
		1742	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1743
		1744	#if EV_USE_INOTIFY
		1745	# define EV_INOTIFY_BUFSIZE 8192
		1746
		1747	static void noinline
		1748	infy_add (EV_P_ ev_stat *w)
		1749	{
		1750	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);
		1751
		1752	if (w->wd < 0)
		1753	{
		1754	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1755
		1756	/* monitor some parent directory for speedup hints */
		1757	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1758	{
		1759	char path [4096];
		1760	strcpy (path, w->path);
		1761
		1762	do
		1763	{
		1764	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1765	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1766
		1767	char *pend = strrchr (path, '/');
		1768
		1769	if (!pend)
		1770	break; /* whoops, no '/', complain to your admin */
		1771
		1772	*pend = 0;
		1773	w->wd = inotify_add_watch (fs_fd, path, mask);
		1774	}
		1775	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1776	}
		1777	}
		1778	else
		1779	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1780
		1781	if (w->wd >= 0)
		1782	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1783	}
		1784
		1785	static void noinline
		1786	infy_del (EV_P_ ev_stat *w)
		1787	{
		1788	int slot;
		1789	int wd = w->wd;
		1790
		1791	if (wd < 0)
		1792	return;
		1793
		1794	w->wd = -2;
		1795	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1796	wlist_del (&fs_hash [slot].head, (WL)w);
		1797
		1798	/* remove this watcher, if others are watching it, they will rearm */
		1799	inotify_rm_watch (fs_fd, wd);
		1800	}
		1801
		1802	static void noinline
		1803	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1804	{
		1805	if (slot < 0)
		1806	/* overflow, need to check for all hahs slots */
		1807	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1808	infy_wd (EV_A_ slot, wd, ev);
		1809	else
		1810	{
		1811	WL w_;
		1812
		1813	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1814	{
		1815	ev_stat *w = (ev_stat *)w_;
		1816	w_ = w_->next; /* lets us remove this watcher and all before it */
		1817
		1818	if (w->wd == wd || wd == -1)
		1819	{
		1820	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1821	{
		1822	w->wd = -1;
		1823	infy_add (EV_A_ w); /* re-add, no matter what */
		1824	}
		1825
		1826	stat_timer_cb (EV_A_ &w->timer, 0);
		1827	}
		1828	}
		1829	}
		1830	}
		1831
		1832	static void
		1833	infy_cb (EV_P_ ev_io *w, int revents)
		1834	{
		1835	char buf [EV_INOTIFY_BUFSIZE];
		1836	struct inotify_event *ev = (struct inotify_event *)buf;
		1837	int ofs;
		1838	int len = read (fs_fd, buf, sizeof (buf));
		1839
		1840	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1841	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1842	}
		1843
		1844	void inline_size
		1845	infy_init (EV_P)
		1846	{
		1847	if (fs_fd != -2)
		1848	return;
		1849
		1850	fs_fd = inotify_init ();
		1851
		1852	if (fs_fd >= 0)
		1853	{
		1854	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1855	ev_set_priority (&fs_w, EV_MAXPRI);
		1856	ev_io_start (EV_A_ &fs_w);
		1857	}
		1858	}
		1859
		1860	void inline_size
		1861	infy_fork (EV_P)
		1862	{
		1863	int slot;
		1864
		1865	if (fs_fd < 0)
		1866	return;
		1867
		1868	close (fs_fd);
		1869	fs_fd = inotify_init ();
		1870
		1871	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1872	{
		1873	WL w_ = fs_hash [slot].head;
		1874	fs_hash [slot].head = 0;
		1875
		1876	while (w_)
		1877	{
		1878	ev_stat *w = (ev_stat *)w_;
		1879	w_ = w_->next; /* lets us add this watcher */
		1880
		1881	w->wd = -1;
		1882
		1883	if (fs_fd >= 0)
		1884	infy_add (EV_A_ w); /* re-add, no matter what */
		1885	else
		1886	ev_timer_start (EV_A_ &w->timer);
		1887	}
		1888
		1889	}
		1890	}
		1891
		1892	#endif
		1893
		1894	void
		1895	ev_stat_stat (EV_P_ ev_stat *w)
		1896	{
		1897	if (lstat (w->path, &w->attr) < 0)
		1898	w->attr.st_nlink = 0;
		1899	else if (!w->attr.st_nlink)
		1900	w->attr.st_nlink = 1;
		1901	}
		1902
		1903	static void noinline
		1904	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1905	{
		1906	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1907
		1908	/* we copy this here each the time so that */
		1909	/* prev has the old value when the callback gets invoked */
		1910	w->prev = w->attr;
		1911	ev_stat_stat (EV_A_ w);
		1912
		1913	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1914	if (
		1915	w->prev.st_dev != w->attr.st_dev
		1916	|| w->prev.st_ino != w->attr.st_ino
		1917	|| w->prev.st_mode != w->attr.st_mode
		1918	|| w->prev.st_nlink != w->attr.st_nlink
		1919	|| w->prev.st_uid != w->attr.st_uid
		1920	|| w->prev.st_gid != w->attr.st_gid
		1921	|| w->prev.st_rdev != w->attr.st_rdev
		1922	|| w->prev.st_size != w->attr.st_size
		1923	|| w->prev.st_atime != w->attr.st_atime
		1924	|| w->prev.st_mtime != w->attr.st_mtime
		1925	|| w->prev.st_ctime != w->attr.st_ctime
		1926	) {
		1927	#if EV_USE_INOTIFY
		1928	infy_del (EV_A_ w);
		1929	infy_add (EV_A_ w);
		1930	ev_stat_stat (EV_A_ w); /* avoid race... */
		1931	#endif
		1932
		1933	ev_feed_event (EV_A_ w, EV_STAT);
		1934	}
		1935	}
		1936
		1937	void
		1938	ev_stat_start (EV_P_ ev_stat *w)
		1939	{
		1940	if (expect_false (ev_is_active (w)))
		1941	return;
		1942
		1943	/* since we use memcmp, we need to clear any padding data etc. */
		1944	memset (&w->prev, 0, sizeof (ev_statdata));
		1945	memset (&w->attr, 0, sizeof (ev_statdata));
		1946
		1947	ev_stat_stat (EV_A_ w);
		1948
		1949	if (w->interval < MIN_STAT_INTERVAL)
		1950	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1951
		1952	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1953	ev_set_priority (&w->timer, ev_priority (w));
		1954
		1955	#if EV_USE_INOTIFY
		1956	infy_init (EV_A);
		1957
		1958	if (fs_fd >= 0)
		1959	infy_add (EV_A_ w);
		1960	else
		1961	#endif
		1962	ev_timer_start (EV_A_ &w->timer);
		1963
		1964	ev_start (EV_A_ (W)w, 1);
		1965	}
		1966
		1967	void
		1968	ev_stat_stop (EV_P_ ev_stat *w)
		1969	{
		1970	ev_clear_pending (EV_A_ (W)w);
		1971	if (expect_false (!ev_is_active (w)))
		1972	return;
		1973
		1974	#if EV_USE_INOTIFY
		1975	infy_del (EV_A_ w);
		1976	#endif
		1977	ev_timer_stop (EV_A_ &w->timer);
		1978
		1979	ev_stop (EV_A_ (W)w);
		1980	}
		1981	#endif
		1982
		1983	void
		1984	ev_idle_start (EV_P_ ev_idle *w)
		1985	{
		1986	if (expect_false (ev_is_active (w)))
		1987	return;
		1988
		1989	ev_start (EV_A_ (W)w, ++idlecnt);
		1990	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1991	idles [idlecnt - 1] = w;
		1992	}
		1993
		1994	void
		1995	ev_idle_stop (EV_P_ ev_idle *w)
		1996	{
		1997	ev_clear_pending (EV_A_ (W)w);
		1998	if (expect_false (!ev_is_active (w)))
		1999	return;
		2000
		2001	{
		2002	int active = ((W)w)->active;
		2003	idles [active - 1] = idles [--idlecnt];
		2004	((W)idles [active - 1])->active = active;
		2005	}
		2006
		2007	ev_stop (EV_A_ (W)w);
		2008	}
		2009
		2010	void
		2011	ev_prepare_start (EV_P_ ev_prepare *w)
		2012	{
		2013	if (expect_false (ev_is_active (w)))
		2014	return;
		2015
		2016	ev_start (EV_A_ (W)w, ++preparecnt);
		2017	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2018	prepares [preparecnt - 1] = w;
		2019	}
		2020
		2021	void
		2022	ev_prepare_stop (EV_P_ ev_prepare *w)
		2023	{
		2024	ev_clear_pending (EV_A_ (W)w);
		2025	if (expect_false (!ev_is_active (w)))
		2026	return;
		2027
		2028	{
		2029	int active = ((W)w)->active;
		2030	prepares [active - 1] = prepares [--preparecnt];
		2031	((W)prepares [active - 1])->active = active;
		2032	}
		2033
		2034	ev_stop (EV_A_ (W)w);
		2035	}
		2036
		2037	void
		2038	ev_check_start (EV_P_ ev_check *w)
		2039	{
		2040	if (expect_false (ev_is_active (w)))
		2041	return;
		2042
		2043	ev_start (EV_A_ (W)w, ++checkcnt);
		2044	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2045	checks [checkcnt - 1] = w;
		2046	}
		2047
		2048	void
		2049	ev_check_stop (EV_P_ ev_check *w)
		2050	{
		2051	ev_clear_pending (EV_A_ (W)w);
		2052	if (expect_false (!ev_is_active (w)))
		2053	return;
		2054
		2055	{
		2056	int active = ((W)w)->active;
		2057	checks [active - 1] = checks [--checkcnt];
		2058	((W)checks [active - 1])->active = active;
		2059	}
		2060
		2061	ev_stop (EV_A_ (W)w);
		2062	}
		2063
		2064	#if EV_EMBED_ENABLE
		2065	void noinline
		2066	ev_embed_sweep (EV_P_ ev_embed *w)
		2067	{
		2068	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2069	}
		2070
		2071	static void
		2072	embed_cb (EV_P_ ev_io *io, int revents)
		2073	{
		2074	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2075
		2076	if (ev_cb (w))
		2077	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2078	else
		2079	ev_embed_sweep (loop, w);
		2080	}
		2081
		2082	void
		2083	ev_embed_start (EV_P_ ev_embed *w)
		2084	{
		2085	if (expect_false (ev_is_active (w)))
		2086	return;
		2087
		2088	{
		2089	struct ev_loop *loop = w->loop;
		2090	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2091	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2092	}
		2093
		2094	ev_set_priority (&w->io, ev_priority (w));
		2095	ev_io_start (EV_A_ &w->io);
		2096
		2097	ev_start (EV_A_ (W)w, 1);
		2098	}
		2099
		2100	void
		2101	ev_embed_stop (EV_P_ ev_embed *w)
		2102	{
		2103	ev_clear_pending (EV_A_ (W)w);
		2104	if (expect_false (!ev_is_active (w)))
		2105	return;
		2106
		2107	ev_io_stop (EV_A_ &w->io);
		2108
		2109	ev_stop (EV_A_ (W)w);
		2110	}
		2111	#endif
		2112
		2113	#if EV_FORK_ENABLE
		2114	void
		2115	ev_fork_start (EV_P_ ev_fork *w)
		2116	{
		2117	if (expect_false (ev_is_active (w)))
		2118	return;
		2119
		2120	ev_start (EV_A_ (W)w, ++forkcnt);
		2121	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2122	forks [forkcnt - 1] = w;
		2123	}
		2124
		2125	void
		2126	ev_fork_stop (EV_P_ ev_fork *w)
		2127	{
		2128	ev_clear_pending (EV_A_ (W)w);
		2129	if (expect_false (!ev_is_active (w)))
		2130	return;
		2131
		2132	{
		2133	int active = ((W)w)->active;
		2134	forks [active - 1] = forks [--forkcnt];
		2135	((W)forks [active - 1])->active = active;
		2136	}
		2137
		2138	ev_stop (EV_A_ (W)w);
		2139	}
		2140	#endif
		2141
1323	/*****************************************************************************/	2142	/*****************************************************************************/
1324		2143
1325	struct ev_once	2144	struct ev_once
1326	{	2145	{
1327	struct ev_io io;	2146	ev_io io;
1328	struct ev_timer to;	2147	ev_timer to;
1329	void (*cb)(int revents, void *arg);	2148	void (*cb)(int revents, void *arg);
1330	void *arg;	2149	void *arg;
1331	};	2150	};
1332		2151
1333	static void	2152	static void
…		…
1336	void (*cb)(int revents, void *arg) = once->cb;	2155	void (*cb)(int revents, void *arg) = once->cb;
1337	void *arg = once->arg;	2156	void *arg = once->arg;
1338		2157
1339	ev_io_stop (EV_A_ &once->io);	2158	ev_io_stop (EV_A_ &once->io);
1340	ev_timer_stop (EV_A_ &once->to);	2159	ev_timer_stop (EV_A_ &once->to);
1341	free (once);	2160	ev_free (once);
1342		2161
1343	cb (revents, arg);	2162	cb (revents, arg);
1344	}	2163	}
1345		2164
1346	static void	2165	static void
1347	once_cb_io (EV_P_ struct ev_io *w, int revents)	2166	once_cb_io (EV_P_ ev_io *w, int revents)
1348	{	2167	{
1349	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2168	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1350	}	2169	}
1351		2170
1352	static void	2171	static void
1353	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2172	once_cb_to (EV_P_ ev_timer *w, int revents)
1354	{	2173	{
1355	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2174	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1356	}	2175	}
1357		2176
1358	void	2177	void
1359	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2178	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1360	{	2179	{
1361	struct ev_once *once = malloc (sizeof (struct ev_once));	2180	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1362		2181
1363	if (!once)	2182	if (expect_false (!once))
		2183	{
1364	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2184	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1365	else	2185	return;
1366	{	2186	}
		2187
1367	once->cb = cb;	2188	once->cb = cb;
1368	once->arg = arg;	2189	once->arg = arg;
1369		2190
1370	ev_watcher_init (&once->io, once_cb_io);	2191	ev_init (&once->io, once_cb_io);
1371	if (fd >= 0)	2192	if (fd >= 0)
1372	{	2193	{
1373	ev_io_set (&once->io, fd, events);	2194	ev_io_set (&once->io, fd, events);
1374	ev_io_start (EV_A_ &once->io);	2195	ev_io_start (EV_A_ &once->io);
1375	}	2196	}
1376		2197
1377	ev_watcher_init (&once->to, once_cb_to);	2198	ev_init (&once->to, once_cb_to);
1378	if (timeout >= 0.)	2199	if (timeout >= 0.)
1379	{	2200	{
1380	ev_timer_set (&once->to, timeout, 0.);	2201	ev_timer_set (&once->to, timeout, 0.);
1381	ev_timer_start (EV_A_ &once->to);	2202	ev_timer_start (EV_A_ &once->to);
1382	}
1383	}	2203	}
1384	}	2204	}
1385		2205
		2206	#ifdef __cplusplus
		2207	}
		2208	#endif
		2209

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