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Comparing libev/ev.c (file contents):
Revision 1.66 by root, Sun Nov 4 23:30:53 2007 UTC vs.
Revision 1.157 by root, Wed Nov 28 20:58:32 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
33		42
34	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
37	# endif	57	# endif
38		58
		59	# ifndef EV_USE_SELECT
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
40	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
41	# endif	65	# endif
42		66
		67	# ifndef EV_USE_POLL
43	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
44	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
45	# endif	73	# endif
46		74
		75	# ifndef EV_USE_EPOLL
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
49	# endif	81	# endif
50		82
		83	# ifndef EV_USE_KQUEUE
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
		97	# endif
		98
		99	# ifndef EV_USE_INOTIFY
		100	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		101	# define EV_USE_INOTIFY 1
		102	# else
		103	# define EV_USE_INOTIFY 0
		104	# endif
53	# endif	105	# endif
54		106
55	#endif	107	#endif
56		108
57	#include <math.h>	109	#include <math.h>
58	#include <stdlib.h>	110	#include <stdlib.h>
59	#include <unistd.h>
60	#include <fcntl.h>	111	#include <fcntl.h>
61	#include <signal.h>
62	#include <stddef.h>	112	#include <stddef.h>
63		113
64	#include <stdio.h>	114	#include <stdio.h>
65		115
66	#include <assert.h>	116	#include <assert.h>
67	#include <errno.h>	117	#include <errno.h>
68	#include <sys/types.h>	118	#include <sys/types.h>
		119	#include <time.h>
		120
		121	#include <signal.h>
		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
69	#ifndef WIN32	129	#ifndef _WIN32
		130	# include <sys/time.h>
70	# include <sys/wait.h>	131	# include <sys/wait.h>
		132	# include <unistd.h>
		133	#else
		134	# define WIN32_LEAN_AND_MEAN
		135	# include <windows.h>
		136	# ifndef EV_SELECT_IS_WINSOCKET
		137	# define EV_SELECT_IS_WINSOCKET 1
71	#endif	138	# endif
72	#include <sys/time.h>	139	#endif
73	#include <time.h>
74		140
75	/**/	141	/**/
76		142
77	#ifndef EV_USE_MONOTONIC	143	#ifndef EV_USE_MONOTONIC
78	# define EV_USE_MONOTONIC 1	144	# define EV_USE_MONOTONIC 0
		145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
79	#endif	149	#endif
80		150
81	#ifndef EV_USE_SELECT	151	#ifndef EV_USE_SELECT
82	# define EV_USE_SELECT 1	152	# define EV_USE_SELECT 1
83	#endif	153	#endif
84		154
85	#ifndef EV_USE_POLL	155	#ifndef EV_USE_POLL
86	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	156	# ifdef _WIN32
		157	# define EV_USE_POLL 0
		158	# else
		159	# define EV_USE_POLL 1
		160	# endif
87	#endif	161	#endif
88		162
89	#ifndef EV_USE_EPOLL	163	#ifndef EV_USE_EPOLL
90	# define EV_USE_EPOLL 0	164	# define EV_USE_EPOLL 0
91	#endif	165	#endif
92		166
93	#ifndef EV_USE_KQUEUE	167	#ifndef EV_USE_KQUEUE
94	# define EV_USE_KQUEUE 0	168	# define EV_USE_KQUEUE 0
95	#endif	169	#endif
96		170
		171	#ifndef EV_USE_PORT
		172	# define EV_USE_PORT 0
		173	#endif
		174
97	#ifndef EV_USE_WIN32	175	#ifndef EV_USE_INOTIFY
98	# ifdef WIN32	176	# define EV_USE_INOTIFY 0
99	# define EV_USE_WIN32 1	177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
100	# else	182	# else
101	# define EV_USE_WIN32 0	183	# define EV_PID_HASHSIZE 16
102	# endif	184	# endif
103	#endif	185	#endif
104		186
105	#ifndef EV_USE_REALTIME	187	#ifndef EV_INOTIFY_HASHSIZE
106	# define EV_USE_REALTIME 1	188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
107	#endif	193	#endif
108		194
109	/**/	195	/**/
110		196
111	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
…		…
116	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
117	# undef EV_USE_REALTIME	203	# undef EV_USE_REALTIME
118	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
119	#endif	205	#endif
120		206
		207	#if EV_SELECT_IS_WINSOCKET
		208	# include <winsock.h>
		209	#endif
		210
		211	#if !EV_STAT_ENABLE
		212	# define EV_USE_INOTIFY 0
		213	#endif
		214
		215	#if EV_USE_INOTIFY
		216	# include <sys/inotify.h>
		217	#endif
		218
121	/**/	219	/**/
122		220
123	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	221	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
124	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	222	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
125	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
126	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	223	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
127
128	#include "ev.h"
129		224
130	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
131	# define expect(expr,value) __builtin_expect ((expr),(value))	226	# define expect(expr,value) __builtin_expect ((expr),(value))
		227	# define inline_size static inline /* inline for codesize */
		228	# if EV_MINIMAL
132	# define inline inline	229	# define noinline __attribute__ ((noinline))
		230	# define inline_speed static noinline
		231	# else
		232	# define noinline
		233	# define inline_speed static inline
		234	# endif
133	#else	235	#else
134	# define expect(expr,value) (expr)	236	# define expect(expr,value) (expr)
		237	# define inline_speed static
135	# define inline static	238	# define inline_size static
		239	# define noinline
136	#endif	240	#endif
137		241
138	#define expect_false(expr) expect ((expr) != 0, 0)	242	#define expect_false(expr) expect ((expr) != 0, 0)
139	#define expect_true(expr) expect ((expr) != 0, 1)	243	#define expect_true(expr) expect ((expr) != 0, 1)
140		244
141	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	246	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
143		247
		248	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		249	#define EMPTY2(a,b) /* used to suppress some warnings */
		250
144	typedef struct ev_watcher *W;	251	typedef ev_watcher *W;
145	typedef struct ev_watcher_list *WL;	252	typedef ev_watcher_list *WL;
146	typedef struct ev_watcher_time *WT;	253	typedef ev_watcher_time *WT;
147		254
148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149		256
		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; \
		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*/\
235	}	424	}
236		425
237	#define array_free(stem, idx) \	426	#define array_free(stem, idx) \
238	free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	427	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
239		428
240	/*****************************************************************************/	429	/*****************************************************************************/
241		430
242	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
243	anfds_init (ANFD *base, int count)	460	anfds_init (ANFD *base, int count)
244	{	461	{
245	while (count--)	462	while (count--)
246	{	463	{
247	base->head = 0;	464	base->head = 0;
…		…
250		467
251	++base;	468	++base;
252	}	469	}
253	}	470	}
254		471
255	static void	472	void inline_speed
256	event (EV_P_ W w, int events)
257	{
258	if (w->pending)
259	{
260	pendings [ABSPRI (w)][w->pending - 1].events |= events;
261	return;
262	}
263
264	w->pending = ++pendingcnt [ABSPRI (w)];
265	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
266	pendings [ABSPRI (w)][w->pending - 1].w = w;
267	pendings [ABSPRI (w)][w->pending - 1].events = events;
268	}
269
270	static void
271	queue_events (EV_P_ W *events, int eventcnt, int type)
272	{
273	int i;
274
275	for (i = 0; i < eventcnt; ++i)
276	event (EV_A_ events [i], type);
277	}
278
279	static void
280	fd_event (EV_P_ int fd, int events)	473	fd_event (EV_P_ int fd, int revents)
281	{	474	{
282	ANFD *anfd = anfds + fd;	475	ANFD *anfd = anfds + fd;
283	struct ev_io *w;	476	ev_io *w;
284		477
285	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)
286	{	479	{
287	int ev = w->events & events;	480	int ev = w->events & revents;
288		481
289	if (ev)	482	if (ev)
290	event (EV_A_ (W)w, ev);	483	ev_feed_event (EV_A_ (W)w, ev);
291	}	484	}
292	}	485	}
293		486
294	/*****************************************************************************/	487	void
		488	ev_feed_fd_event (EV_P_ int fd, int revents)
		489	{
		490	fd_event (EV_A_ fd, revents);
		491	}
295		492
296	static void	493	void inline_size
297	fd_reify (EV_P)	494	fd_reify (EV_P)
298	{	495	{
299	int i;	496	int i;
300		497
301	for (i = 0; i < fdchangecnt; ++i)	498	for (i = 0; i < fdchangecnt; ++i)
302	{	499	{
303	int fd = fdchanges [i];	500	int fd = fdchanges [i];
304	ANFD *anfd = anfds + fd;	501	ANFD *anfd = anfds + fd;
305	struct ev_io *w;	502	ev_io *w;
306		503
307	int events = 0;	504	int events = 0;
308		505
309	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)
310	events |= w->events;	507	events |= w->events;
311		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
312	anfd->reify = 0;	518	anfd->reify = 0;
313		519
314	method_modify (EV_A_ fd, anfd->events, events);	520	backend_modify (EV_A_ fd, anfd->events, events);
315	anfd->events = events;	521	anfd->events = events;
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	static void noinline
		892	loop_init (EV_P_ unsigned int flags)
		893	{
		894	if (!backend)
600	{	895	{
601	#if EV_USE_MONOTONIC	896	#if EV_USE_MONOTONIC
602	{	897	{
603	struct timespec ts;	898	struct timespec ts;
604	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	899	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
605	have_monotonic = 1;	900	have_monotonic = 1;
606	}	901	}
607	#endif	902	#endif
608		903
609	rt_now = ev_time ();	904	ev_rt_now = ev_time ();
610	mn_now = get_clock ();	905	mn_now = get_clock ();
611	now_floor = mn_now;	906	now_floor = mn_now;
612	rtmn_diff = rt_now - mn_now;	907	rtmn_diff = ev_rt_now - mn_now;
613		908
614	if (methods == EVMETHOD_AUTO)	909	if (!(flags & EVFLAG_NOENV)
615	if (!enable_secure () && getenv ("LIBEV_METHODS"))	910	&& !enable_secure ()
		911	&& getenv ("LIBEV_FLAGS"))
616	methods = atoi (getenv ("LIBEV_METHODS"));	912	flags = atoi (getenv ("LIBEV_FLAGS"));
617	else
618	methods = EVMETHOD_ANY;
619		913
620	method = 0;	914	if (!(flags & 0x0000ffffUL))
		915	flags |= ev_recommended_backends ();
		916
		917	backend = 0;
		918	backend_fd = -1;
621	#if EV_USE_WIN32	919	#if EV_USE_INOTIFY
622	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	920	fs_fd = -2;
		921	#endif
		922
		923	#if EV_USE_PORT
		924	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
623	#endif	925	#endif
624	#if EV_USE_KQUEUE	926	#if EV_USE_KQUEUE
625	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	927	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
626	#endif	928	#endif
627	#if EV_USE_EPOLL	929	#if EV_USE_EPOLL
628	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	930	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
629	#endif	931	#endif
630	#if EV_USE_POLL	932	#if EV_USE_POLL
631	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	933	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
632	#endif	934	#endif
633	#if EV_USE_SELECT	935	#if EV_USE_SELECT
634	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	936	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
635	#endif	937	#endif
636	}
637	}
638		938
639	void	939	ev_init (&sigev, sigcb);
		940	ev_set_priority (&sigev, EV_MAXPRI);
		941	}
		942	}
		943
		944	static void noinline
640	loop_destroy (EV_P)	945	loop_destroy (EV_P)
641	{	946	{
642	int i;	947	int i;
643		948
644	#if EV_USE_WIN32	949	#if EV_USE_INOTIFY
645	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	950	if (fs_fd >= 0)
		951	close (fs_fd);
		952	#endif
		953
		954	if (backend_fd >= 0)
		955	close (backend_fd);
		956
		957	#if EV_USE_PORT
		958	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
646	#endif	959	#endif
647	#if EV_USE_KQUEUE	960	#if EV_USE_KQUEUE
648	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	961	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
649	#endif	962	#endif
650	#if EV_USE_EPOLL	963	#if EV_USE_EPOLL
651	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	964	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
652	#endif	965	#endif
653	#if EV_USE_POLL	966	#if EV_USE_POLL
654	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	967	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
655	#endif	968	#endif
656	#if EV_USE_SELECT	969	#if EV_USE_SELECT
657	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	970	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
658	#endif	971	#endif
659		972
660	for (i = NUMPRI; i--; )	973	for (i = NUMPRI; i--; )
661	array_free (pending, [i]);	974	array_free (pending, [i]);
662		975
		976	/* have to use the microsoft-never-gets-it-right macro */
663	array_free (fdchange, );	977	array_free (fdchange, EMPTY0);
664	array_free (timer, );	978	array_free (timer, EMPTY0);
		979	#if EV_PERIODIC_ENABLE
665	array_free (periodic, );	980	array_free (periodic, EMPTY0);
		981	#endif
666	array_free (idle, );	982	array_free (idle, EMPTY0);
667	array_free (prepare, );	983	array_free (prepare, EMPTY0);
668	array_free (check, );	984	array_free (check, EMPTY0);
669		985
670	method = 0;	986	backend = 0;
671	/*TODO*/
672	}	987	}
673		988
674	void	989	void inline_size infy_fork (EV_P);
		990
		991	void inline_size
675	loop_fork (EV_P)	992	loop_fork (EV_P)
676	{	993	{
677	/*TODO*/	994	#if EV_USE_PORT
		995	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		996	#endif
		997	#if EV_USE_KQUEUE
		998	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		999	#endif
678	#if EV_USE_EPOLL	1000	#if EV_USE_EPOLL
679	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1001	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
680	#endif	1002	#endif
681	#if EV_USE_KQUEUE	1003	#if EV_USE_INOTIFY
682	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1004	infy_fork (EV_A);
683	#endif	1005	#endif
		1006
		1007	if (ev_is_active (&sigev))
		1008	{
		1009	/* default loop */
		1010
		1011	ev_ref (EV_A);
		1012	ev_io_stop (EV_A_ &sigev);
		1013	close (sigpipe [0]);
		1014	close (sigpipe [1]);
		1015
		1016	while (pipe (sigpipe))
		1017	syserr ("(libev) error creating pipe");
		1018
		1019	siginit (EV_A);
		1020	}
		1021
		1022	postfork = 0;
684	}	1023	}
685		1024
686	#if EV_MULTIPLICITY	1025	#if EV_MULTIPLICITY
687	struct ev_loop *	1026	struct ev_loop *
688	ev_loop_new (int methods)	1027	ev_loop_new (unsigned int flags)
689	{	1028	{
690	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));	1029	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
691		1030
		1031	memset (loop, 0, sizeof (struct ev_loop));
		1032
692	loop_init (EV_A_ methods);	1033	loop_init (EV_A_ flags);
693		1034
694	if (ev_method (EV_A))	1035	if (ev_backend (EV_A))
695	return loop;	1036	return loop;
696		1037
697	return 0;	1038	return 0;
698	}	1039	}
699		1040
700	void	1041	void
701	ev_loop_destroy (EV_P)	1042	ev_loop_destroy (EV_P)
702	{	1043	{
703	loop_destroy (EV_A);	1044	loop_destroy (EV_A);
704	free (loop);	1045	ev_free (loop);
705	}	1046	}
706		1047
707	void	1048	void
708	ev_loop_fork (EV_P)	1049	ev_loop_fork (EV_P)
709	{	1050	{
710	loop_fork (EV_A);	1051	postfork = 1;
711	}	1052	}
712		1053
713	#endif	1054	#endif
714		1055
715	#if EV_MULTIPLICITY	1056	#if EV_MULTIPLICITY
716	struct ev_loop default_loop_struct;
717	static struct ev_loop *default_loop;
718
719	struct ev_loop *	1057	struct ev_loop *
		1058	ev_default_loop_init (unsigned int flags)
720	#else	1059	#else
721	static int default_loop;
722
723	int	1060	int
		1061	ev_default_loop (unsigned int flags)
724	#endif	1062	#endif
725	ev_default_loop (int methods)
726	{	1063	{
727	if (sigpipe [0] == sigpipe [1])	1064	if (sigpipe [0] == sigpipe [1])
728	if (pipe (sigpipe))	1065	if (pipe (sigpipe))
729	return 0;	1066	return 0;
730		1067
731	if (!default_loop)	1068	if (!ev_default_loop_ptr)
732	{	1069	{
733	#if EV_MULTIPLICITY	1070	#if EV_MULTIPLICITY
734	struct ev_loop *loop = default_loop = &default_loop_struct;	1071	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
735	#else	1072	#else
736	default_loop = 1;	1073	ev_default_loop_ptr = 1;
737	#endif	1074	#endif
738		1075
739	loop_init (EV_A_ methods);	1076	loop_init (EV_A_ flags);
740		1077
741	if (ev_method (EV_A))	1078	if (ev_backend (EV_A))
742	{	1079	{
743	ev_watcher_init (&sigev, sigcb);
744	ev_set_priority (&sigev, EV_MAXPRI);
745	siginit (EV_A);	1080	siginit (EV_A);
746		1081
747	#ifndef WIN32	1082	#ifndef _WIN32
748	ev_signal_init (&childev, childcb, SIGCHLD);	1083	ev_signal_init (&childev, childcb, SIGCHLD);
749	ev_set_priority (&childev, EV_MAXPRI);	1084	ev_set_priority (&childev, EV_MAXPRI);
750	ev_signal_start (EV_A_ &childev);	1085	ev_signal_start (EV_A_ &childev);
751	ev_unref (EV_A); /* child watcher should not keep loop alive */	1086	ev_unref (EV_A); /* child watcher should not keep loop alive */
752	#endif	1087	#endif
753	}	1088	}
754	else	1089	else
755	default_loop = 0;	1090	ev_default_loop_ptr = 0;
756	}	1091	}
757		1092
758	return default_loop;	1093	return ev_default_loop_ptr;
759	}	1094	}
760		1095
761	void	1096	void
762	ev_default_destroy (void)	1097	ev_default_destroy (void)
763	{	1098	{
764	#if EV_MULTIPLICITY	1099	#if EV_MULTIPLICITY
765	struct ev_loop *loop = default_loop;	1100	struct ev_loop *loop = ev_default_loop_ptr;
766	#endif	1101	#endif
767		1102
		1103	#ifndef _WIN32
768	ev_ref (EV_A); /* child watcher */	1104	ev_ref (EV_A); /* child watcher */
769	ev_signal_stop (EV_A_ &childev);	1105	ev_signal_stop (EV_A_ &childev);
		1106	#endif
770		1107
771	ev_ref (EV_A); /* signal watcher */	1108	ev_ref (EV_A); /* signal watcher */
772	ev_io_stop (EV_A_ &sigev);	1109	ev_io_stop (EV_A_ &sigev);
773		1110
774	close (sigpipe [0]); sigpipe [0] = 0;	1111	close (sigpipe [0]); sigpipe [0] = 0;
…		…
779		1116
780	void	1117	void
781	ev_default_fork (void)	1118	ev_default_fork (void)
782	{	1119	{
783	#if EV_MULTIPLICITY	1120	#if EV_MULTIPLICITY
784	struct ev_loop *loop = default_loop;	1121	struct ev_loop *loop = ev_default_loop_ptr;
785	#endif	1122	#endif
786		1123
787	loop_fork (EV_A);	1124	if (backend)
788		1125	postfork = 1;
789	ev_io_stop (EV_A_ &sigev);
790	close (sigpipe [0]);
791	close (sigpipe [1]);
792	pipe (sigpipe);
793
794	ev_ref (EV_A); /* signal watcher */
795	siginit (EV_A);
796	}	1126	}
797		1127
798	/*****************************************************************************/	1128	/*****************************************************************************/
799		1129
800	static void	1130	int inline_size
		1131	any_pending (EV_P)
		1132	{
		1133	int pri;
		1134
		1135	for (pri = NUMPRI; pri--; )
		1136	if (pendingcnt [pri])
		1137	return 1;
		1138
		1139	return 0;
		1140	}
		1141
		1142	void inline_speed
801	call_pending (EV_P)	1143	call_pending (EV_P)
802	{	1144	{
803	int pri;	1145	int pri;
804		1146
805	for (pri = NUMPRI; pri--; )	1147	for (pri = NUMPRI; pri--; )
806	while (pendingcnt [pri])	1148	while (pendingcnt [pri])
807	{	1149	{
808	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1150	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
809		1151
810	if (p->w)	1152	if (expect_true (p->w))
811	{	1153	{
		1154	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1155
812	p->w->pending = 0;	1156	p->w->pending = 0;
813	p->w->cb (EV_A_ p->w, p->events);	1157	EV_CB_INVOKE (p->w, p->events);
814	}	1158	}
815	}	1159	}
816	}	1160	}
817		1161
818	static void	1162	void inline_size
819	timers_reify (EV_P)	1163	timers_reify (EV_P)
820	{	1164	{
821	while (timercnt && ((WT)timers [0])->at <= mn_now)	1165	while (timercnt && ((WT)timers [0])->at <= mn_now)
822	{	1166	{
823	struct ev_timer *w = timers [0];	1167	ev_timer *w = timers [0];
824		1168
825	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1169	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
826		1170
827	/* first reschedule or stop timer */	1171	/* first reschedule or stop timer */
828	if (w->repeat)	1172	if (w->repeat)
829	{	1173	{
830	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1174	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1175
831	((WT)w)->at = mn_now + w->repeat;	1176	((WT)w)->at += w->repeat;
		1177	if (((WT)w)->at < mn_now)
		1178	((WT)w)->at = mn_now;
		1179
832	downheap ((WT *)timers, timercnt, 0);	1180	downheap ((WT *)timers, timercnt, 0);
833	}	1181	}
834	else	1182	else
835	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1183	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
836		1184
837	event (EV_A_ (W)w, EV_TIMEOUT);	1185	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
838	}	1186	}
839	}	1187	}
840		1188
841	static void	1189	#if EV_PERIODIC_ENABLE
		1190	void inline_size
842	periodics_reify (EV_P)	1191	periodics_reify (EV_P)
843	{	1192	{
844	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1193	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
845	{	1194	{
846	struct ev_periodic *w = periodics [0];	1195	ev_periodic *w = periodics [0];
847		1196
848	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1197	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
849		1198
850	/* first reschedule or stop timer */	1199	/* first reschedule or stop timer */
851	if (w->interval)	1200	if (w->reschedule_cb)
852	{	1201	{
		1202	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1203	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1204	downheap ((WT *)periodics, periodiccnt, 0);
		1205	}
		1206	else if (w->interval)
		1207	{
853	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1208	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
854	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1209	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
855	downheap ((WT *)periodics, periodiccnt, 0);	1210	downheap ((WT *)periodics, periodiccnt, 0);
856	}	1211	}
857	else	1212	else
858	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1213	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
859		1214
860	event (EV_A_ (W)w, EV_PERIODIC);	1215	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
861	}	1216	}
862	}	1217	}
863		1218
864	static void	1219	static void noinline
865	periodics_reschedule (EV_P)	1220	periodics_reschedule (EV_P)
866	{	1221	{
867	int i;	1222	int i;
868		1223
869	/* adjust periodics after time jump */	1224	/* adjust periodics after time jump */
870	for (i = 0; i < periodiccnt; ++i)	1225	for (i = 0; i < periodiccnt; ++i)
871	{	1226	{
872	struct ev_periodic *w = periodics [i];	1227	ev_periodic *w = periodics [i];
873		1228
		1229	if (w->reschedule_cb)
		1230	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
874	if (w->interval)	1231	else if (w->interval)
875	{
876	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1232	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
877
878	if (fabs (diff) >= 1e-4)
879	{
880	ev_periodic_stop (EV_A_ w);
881	ev_periodic_start (EV_A_ w);
882
883	i = 0; /* restart loop, inefficient, but time jumps should be rare */
884	}
885	}
886	}	1233	}
887	}
888		1234
889	inline int	1235	/* now rebuild the heap */
		1236	for (i = periodiccnt >> 1; i--; )
		1237	downheap ((WT *)periodics, periodiccnt, i);
		1238	}
		1239	#endif
		1240
		1241	int inline_size
890	time_update_monotonic (EV_P)	1242	time_update_monotonic (EV_P)
891	{	1243	{
892	mn_now = get_clock ();	1244	mn_now = get_clock ();
893		1245
894	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1246	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
895	{	1247	{
896	rt_now = rtmn_diff + mn_now;	1248	ev_rt_now = rtmn_diff + mn_now;
897	return 0;	1249	return 0;
898	}	1250	}
899	else	1251	else
900	{	1252	{
901	now_floor = mn_now;	1253	now_floor = mn_now;
902	rt_now = ev_time ();	1254	ev_rt_now = ev_time ();
903	return 1;	1255	return 1;
904	}	1256	}
905	}	1257	}
906		1258
907	static void	1259	void inline_size
908	time_update (EV_P)	1260	time_update (EV_P)
909	{	1261	{
910	int i;	1262	int i;
911		1263
912	#if EV_USE_MONOTONIC	1264	#if EV_USE_MONOTONIC
…		…
914	{	1266	{
915	if (time_update_monotonic (EV_A))	1267	if (time_update_monotonic (EV_A))
916	{	1268	{
917	ev_tstamp odiff = rtmn_diff;	1269	ev_tstamp odiff = rtmn_diff;
918		1270
919	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1271	/* loop a few times, before making important decisions.
		1272	* on the choice of "4": one iteration isn't enough,
		1273	* in case we get preempted during the calls to
		1274	* ev_time and get_clock. a second call is almost guaranteed
		1275	* to succeed in that case, though. and looping a few more times
		1276	* doesn't hurt either as we only do this on time-jumps or
		1277	* in the unlikely event of having been preempted here.
		1278	*/
		1279	for (i = 4; --i; )
920	{	1280	{
921	rtmn_diff = rt_now - mn_now;	1281	rtmn_diff = ev_rt_now - mn_now;
922		1282
923	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1283	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
924	return; /* all is well */	1284	return; /* all is well */
925		1285
926	rt_now = ev_time ();	1286	ev_rt_now = ev_time ();
927	mn_now = get_clock ();	1287	mn_now = get_clock ();
928	now_floor = mn_now;	1288	now_floor = mn_now;
929	}	1289	}
930		1290
		1291	# if EV_PERIODIC_ENABLE
931	periodics_reschedule (EV_A);	1292	periodics_reschedule (EV_A);
		1293	# endif
932	/* no timer adjustment, as the monotonic clock doesn't jump */	1294	/* no timer adjustment, as the monotonic clock doesn't jump */
933	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1295	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
934	}	1296	}
935	}	1297	}
936	else	1298	else
937	#endif	1299	#endif
938	{	1300	{
939	rt_now = ev_time ();	1301	ev_rt_now = ev_time ();
940		1302
941	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1303	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
942	{	1304	{
		1305	#if EV_PERIODIC_ENABLE
943	periodics_reschedule (EV_A);	1306	periodics_reschedule (EV_A);
		1307	#endif
944		1308
945	/* adjust timers. this is easy, as the offset is the same for all */	1309	/* adjust timers. this is easy, as the offset is the same for all of them */
946	for (i = 0; i < timercnt; ++i)	1310	for (i = 0; i < timercnt; ++i)
947	((WT)timers [i])->at += rt_now - mn_now;	1311	((WT)timers [i])->at += ev_rt_now - mn_now;
948	}	1312	}
949		1313
950	mn_now = rt_now;	1314	mn_now = ev_rt_now;
951	}	1315	}
952	}	1316	}
953		1317
954	void	1318	void
955	ev_ref (EV_P)	1319	ev_ref (EV_P)
…		…
966	static int loop_done;	1330	static int loop_done;
967		1331
968	void	1332	void
969	ev_loop (EV_P_ int flags)	1333	ev_loop (EV_P_ int flags)
970	{	1334	{
971	double block;
972	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1335	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1336	? EVUNLOOP_ONE
		1337	: EVUNLOOP_CANCEL;
973		1338
974	do	1339	while (activecnt)
975	{	1340	{
		1341	#if EV_FORK_ENABLE
		1342	/* we might have forked, so queue fork handlers */
		1343	if (expect_false (postfork))
		1344	if (forkcnt)
		1345	{
		1346	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1347	call_pending (EV_A);
		1348	}
		1349	#endif
		1350
976	/* queue check watchers (and execute them) */	1351	/* queue check watchers (and execute them) */
977	if (expect_false (preparecnt))	1352	if (expect_false (preparecnt))
978	{	1353	{
979	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1354	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
980	call_pending (EV_A);	1355	call_pending (EV_A);
981	}	1356	}
982		1357
		1358	/* we might have forked, so reify kernel state if necessary */
		1359	if (expect_false (postfork))
		1360	loop_fork (EV_A);
		1361
983	/* update fd-related kernel structures */	1362	/* update fd-related kernel structures */
984	fd_reify (EV_A);	1363	fd_reify (EV_A);
985		1364
986	/* calculate blocking time */	1365	/* calculate blocking time */
		1366	{
		1367	ev_tstamp block;
987		1368
988	/* we only need this for !monotonic clockor timers, but as we basically	1369	if (flags & EVLOOP_NONBLOCK || idlecnt)
989	always have timers, we just calculate it always */	1370	block = 0.; /* do not block at all */
		1371	else
		1372	{
		1373	/* update time to cancel out callback processing overhead */
990	#if EV_USE_MONOTONIC	1374	#if EV_USE_MONOTONIC
991	if (expect_true (have_monotonic))	1375	if (expect_true (have_monotonic))
992	time_update_monotonic (EV_A);	1376	time_update_monotonic (EV_A);
993	else	1377	else
994	#endif	1378	#endif
995	{	1379	{
996	rt_now = ev_time ();	1380	ev_rt_now = ev_time ();
997	mn_now = rt_now;	1381	mn_now = ev_rt_now;
998	}	1382	}
999		1383
1000	if (flags & EVLOOP_NONBLOCK || idlecnt)
1001	block = 0.;
1002	else
1003	{
1004	block = MAX_BLOCKTIME;	1384	block = MAX_BLOCKTIME;
1005		1385
1006	if (timercnt)	1386	if (timercnt)
1007	{	1387	{
1008	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1388	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1009	if (block > to) block = to;	1389	if (block > to) block = to;
1010	}	1390	}
1011		1391
		1392	#if EV_PERIODIC_ENABLE
1012	if (periodiccnt)	1393	if (periodiccnt)
1013	{	1394	{
1014	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1395	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1015	if (block > to) block = to;	1396	if (block > to) block = to;
1016	}	1397	}
		1398	#endif
1017		1399
1018	if (block < 0.) block = 0.;	1400	if (expect_false (block < 0.)) block = 0.;
1019	}	1401	}
1020		1402
1021	method_poll (EV_A_ block);	1403	backend_poll (EV_A_ block);
		1404	}
1022		1405
1023	/* update rt_now, do magic */	1406	/* update ev_rt_now, do magic */
1024	time_update (EV_A);	1407	time_update (EV_A);
1025		1408
1026	/* queue pending timers and reschedule them */	1409	/* queue pending timers and reschedule them */
1027	timers_reify (EV_A); /* relative timers called last */	1410	timers_reify (EV_A); /* relative timers called last */
		1411	#if EV_PERIODIC_ENABLE
1028	periodics_reify (EV_A); /* absolute timers called first */	1412	periodics_reify (EV_A); /* absolute timers called first */
		1413	#endif
1029		1414
1030	/* queue idle watchers unless io or timers are pending */	1415	/* queue idle watchers unless other events are pending */
1031	if (!pendingcnt)	1416	if (idlecnt && !any_pending (EV_A))
1032	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1417	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1033		1418
1034	/* queue check watchers, to be executed first */	1419	/* queue check watchers, to be executed first */
1035	if (checkcnt)	1420	if (expect_false (checkcnt))
1036	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1421	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1037		1422
1038	call_pending (EV_A);	1423	call_pending (EV_A);
1039	}
1040	while (activecnt && !loop_done);
1041		1424
1042	if (loop_done != 2)	1425	if (expect_false (loop_done))
1043	loop_done = 0;	1426	break;
		1427	}
		1428
		1429	if (loop_done == EVUNLOOP_ONE)
		1430	loop_done = EVUNLOOP_CANCEL;
1044	}	1431	}
1045		1432
1046	void	1433	void
1047	ev_unloop (EV_P_ int how)	1434	ev_unloop (EV_P_ int how)
1048	{	1435	{
1049	loop_done = how;	1436	loop_done = how;
1050	}	1437	}
1051		1438
1052	/*****************************************************************************/	1439	/*****************************************************************************/
1053		1440
1054	inline void	1441	void inline_size
1055	wlist_add (WL *head, WL elem)	1442	wlist_add (WL *head, WL elem)
1056	{	1443	{
1057	elem->next = *head;	1444	elem->next = *head;
1058	*head = elem;	1445	*head = elem;
1059	}	1446	}
1060		1447
1061	inline void	1448	void inline_size
1062	wlist_del (WL *head, WL elem)	1449	wlist_del (WL *head, WL elem)
1063	{	1450	{
1064	while (*head)	1451	while (*head)
1065	{	1452	{
1066	if (*head == elem)	1453	if (*head == elem)
…		…
1071		1458
1072	head = &(*head)->next;	1459	head = &(*head)->next;
1073	}	1460	}
1074	}	1461	}
1075		1462
1076	inline void	1463	void inline_speed
1077	ev_clear_pending (EV_P_ W w)	1464	ev_clear_pending (EV_P_ W w)
1078	{	1465	{
1079	if (w->pending)	1466	if (w->pending)
1080	{	1467	{
1081	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1468	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1082	w->pending = 0;	1469	w->pending = 0;
1083	}	1470	}
1084	}	1471	}
1085		1472
1086	inline void	1473	void inline_speed
1087	ev_start (EV_P_ W w, int active)	1474	ev_start (EV_P_ W w, int active)
1088	{	1475	{
1089	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1476	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1090	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1477	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1091		1478
1092	w->active = active;	1479	w->active = active;
1093	ev_ref (EV_A);	1480	ev_ref (EV_A);
1094	}	1481	}
1095		1482
1096	inline void	1483	void inline_size
1097	ev_stop (EV_P_ W w)	1484	ev_stop (EV_P_ W w)
1098	{	1485	{
1099	ev_unref (EV_A);	1486	ev_unref (EV_A);
1100	w->active = 0;	1487	w->active = 0;
1101	}	1488	}
1102		1489
1103	/*****************************************************************************/	1490	/*****************************************************************************/
1104		1491
1105	void	1492	void
1106	ev_io_start (EV_P_ struct ev_io *w)	1493	ev_io_start (EV_P_ ev_io *w)
1107	{	1494	{
1108	int fd = w->fd;	1495	int fd = w->fd;
1109		1496
1110	if (ev_is_active (w))	1497	if (expect_false (ev_is_active (w)))
1111	return;	1498	return;
1112		1499
1113	assert (("ev_io_start called with negative fd", fd >= 0));	1500	assert (("ev_io_start called with negative fd", fd >= 0));
1114		1501
1115	ev_start (EV_A_ (W)w, 1);	1502	ev_start (EV_A_ (W)w, 1);
1116	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1503	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1117	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1504	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1118		1505
1119	fd_change (EV_A_ fd);	1506	fd_change (EV_A_ fd);
1120	}	1507	}
1121		1508
1122	void	1509	void
1123	ev_io_stop (EV_P_ struct ev_io *w)	1510	ev_io_stop (EV_P_ ev_io *w)
1124	{	1511	{
1125	ev_clear_pending (EV_A_ (W)w);	1512	ev_clear_pending (EV_A_ (W)w);
1126	if (!ev_is_active (w))	1513	if (expect_false (!ev_is_active (w)))
1127	return;	1514	return;
		1515
		1516	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1128		1517
1129	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1518	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1130	ev_stop (EV_A_ (W)w);	1519	ev_stop (EV_A_ (W)w);
1131		1520
1132	fd_change (EV_A_ w->fd);	1521	fd_change (EV_A_ w->fd);
1133	}	1522	}
1134		1523
1135	void	1524	void
1136	ev_timer_start (EV_P_ struct ev_timer *w)	1525	ev_timer_start (EV_P_ ev_timer *w)
1137	{	1526	{
1138	if (ev_is_active (w))	1527	if (expect_false (ev_is_active (w)))
1139	return;	1528	return;
1140		1529
1141	((WT)w)->at += mn_now;	1530	((WT)w)->at += mn_now;
1142		1531
1143	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1532	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1144		1533
1145	ev_start (EV_A_ (W)w, ++timercnt);	1534	ev_start (EV_A_ (W)w, ++timercnt);
1146	array_needsize (timers, timermax, timercnt, );	1535	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1147	timers [timercnt - 1] = w;	1536	timers [timercnt - 1] = w;
1148	upheap ((WT *)timers, timercnt - 1);	1537	upheap ((WT *)timers, timercnt - 1);
1149		1538
		1539	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1540	}
		1541
		1542	void
		1543	ev_timer_stop (EV_P_ ev_timer *w)
		1544	{
		1545	ev_clear_pending (EV_A_ (W)w);
		1546	if (expect_false (!ev_is_active (w)))
		1547	return;
		1548
1150	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1549	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1151	}
1152		1550
1153	void	1551	{
1154	ev_timer_stop (EV_P_ struct ev_timer *w)	1552	int active = ((W)w)->active;
1155	{
1156	ev_clear_pending (EV_A_ (W)w);
1157	if (!ev_is_active (w))
1158	return;
1159		1553
1160	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1554	if (expect_true (--active < --timercnt))
1161
1162	if (((W)w)->active < timercnt--)
1163	{	1555	{
1164	timers [((W)w)->active - 1] = timers [timercnt];	1556	timers [active] = timers [timercnt];
1165	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1557	adjustheap ((WT *)timers, timercnt, active);
1166	}	1558	}
		1559	}
1167		1560
1168	((WT)w)->at = w->repeat;	1561	((WT)w)->at -= mn_now;
1169		1562
1170	ev_stop (EV_A_ (W)w);	1563	ev_stop (EV_A_ (W)w);
1171	}	1564	}
1172		1565
1173	void	1566	void
1174	ev_timer_again (EV_P_ struct ev_timer *w)	1567	ev_timer_again (EV_P_ ev_timer *w)
1175	{	1568	{
1176	if (ev_is_active (w))	1569	if (ev_is_active (w))
1177	{	1570	{
1178	if (w->repeat)	1571	if (w->repeat)
1179	{	1572	{
1180	((WT)w)->at = mn_now + w->repeat;	1573	((WT)w)->at = mn_now + w->repeat;
1181	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1574	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1182	}	1575	}
1183	else	1576	else
1184	ev_timer_stop (EV_A_ w);	1577	ev_timer_stop (EV_A_ w);
1185	}	1578	}
1186	else if (w->repeat)	1579	else if (w->repeat)
		1580	{
		1581	w->at = w->repeat;
1187	ev_timer_start (EV_A_ w);	1582	ev_timer_start (EV_A_ w);
		1583	}
1188	}	1584	}
1189		1585
		1586	#if EV_PERIODIC_ENABLE
1190	void	1587	void
1191	ev_periodic_start (EV_P_ struct ev_periodic *w)	1588	ev_periodic_start (EV_P_ ev_periodic *w)
1192	{	1589	{
1193	if (ev_is_active (w))	1590	if (expect_false (ev_is_active (w)))
1194	return;	1591	return;
1195		1592
		1593	if (w->reschedule_cb)
		1594	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1595	else if (w->interval)
		1596	{
1196	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1597	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1197
1198	/* this formula differs from the one in periodic_reify because we do not always round up */	1598	/* this formula differs from the one in periodic_reify because we do not always round up */
1199	if (w->interval)
1200	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1599	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1600	}
1201		1601
1202	ev_start (EV_A_ (W)w, ++periodiccnt);	1602	ev_start (EV_A_ (W)w, ++periodiccnt);
1203	array_needsize (periodics, periodicmax, periodiccnt, );	1603	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1204	periodics [periodiccnt - 1] = w;	1604	periodics [periodiccnt - 1] = w;
1205	upheap ((WT *)periodics, periodiccnt - 1);	1605	upheap ((WT *)periodics, periodiccnt - 1);
1206		1606
		1607	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1608	}
		1609
		1610	void
		1611	ev_periodic_stop (EV_P_ ev_periodic *w)
		1612	{
		1613	ev_clear_pending (EV_A_ (W)w);
		1614	if (expect_false (!ev_is_active (w)))
		1615	return;
		1616
1207	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1617	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1208	}
1209		1618
1210	void	1619	{
1211	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1620	int active = ((W)w)->active;
1212	{
1213	ev_clear_pending (EV_A_ (W)w);
1214	if (!ev_is_active (w))
1215	return;
1216		1621
1217	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1622	if (expect_true (--active < --periodiccnt))
1218
1219	if (((W)w)->active < periodiccnt--)
1220	{	1623	{
1221	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1624	periodics [active] = periodics [periodiccnt];
1222	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1625	adjustheap ((WT *)periodics, periodiccnt, active);
1223	}	1626	}
		1627	}
1224		1628
1225	ev_stop (EV_A_ (W)w);	1629	ev_stop (EV_A_ (W)w);
1226	}	1630	}
1227		1631
1228	void	1632	void
1229	ev_idle_start (EV_P_ struct ev_idle *w)	1633	ev_periodic_again (EV_P_ ev_periodic *w)
1230	{	1634	{
1231	if (ev_is_active (w))	1635	/* TODO: use adjustheap and recalculation */
1232	return;
1233
1234	ev_start (EV_A_ (W)w, ++idlecnt);
1235	array_needsize (idles, idlemax, idlecnt, );
1236	idles [idlecnt - 1] = w;
1237	}
1238
1239	void
1240	ev_idle_stop (EV_P_ struct ev_idle *w)
1241	{
1242	ev_clear_pending (EV_A_ (W)w);
1243	if (ev_is_active (w))
1244	return;
1245
1246	idles [((W)w)->active - 1] = idles [--idlecnt];
1247	ev_stop (EV_A_ (W)w);	1636	ev_periodic_stop (EV_A_ w);
		1637	ev_periodic_start (EV_A_ w);
1248	}	1638	}
1249		1639	#endif
1250	void
1251	ev_prepare_start (EV_P_ struct ev_prepare *w)
1252	{
1253	if (ev_is_active (w))
1254	return;
1255
1256	ev_start (EV_A_ (W)w, ++preparecnt);
1257	array_needsize (prepares, preparemax, preparecnt, );
1258	prepares [preparecnt - 1] = w;
1259	}
1260
1261	void
1262	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1263	{
1264	ev_clear_pending (EV_A_ (W)w);
1265	if (ev_is_active (w))
1266	return;
1267
1268	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1269	ev_stop (EV_A_ (W)w);
1270	}
1271
1272	void
1273	ev_check_start (EV_P_ struct ev_check *w)
1274	{
1275	if (ev_is_active (w))
1276	return;
1277
1278	ev_start (EV_A_ (W)w, ++checkcnt);
1279	array_needsize (checks, checkmax, checkcnt, );
1280	checks [checkcnt - 1] = w;
1281	}
1282
1283	void
1284	ev_check_stop (EV_P_ struct ev_check *w)
1285	{
1286	ev_clear_pending (EV_A_ (W)w);
1287	if (ev_is_active (w))
1288	return;
1289
1290	checks [((W)w)->active - 1] = checks [--checkcnt];
1291	ev_stop (EV_A_ (W)w);
1292	}
1293		1640
1294	#ifndef SA_RESTART	1641	#ifndef SA_RESTART
1295	# define SA_RESTART 0	1642	# define SA_RESTART 0
1296	#endif	1643	#endif
1297		1644
1298	void	1645	void
1299	ev_signal_start (EV_P_ struct ev_signal *w)	1646	ev_signal_start (EV_P_ ev_signal *w)
1300	{	1647	{
1301	#if EV_MULTIPLICITY	1648	#if EV_MULTIPLICITY
1302	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1649	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1303	#endif	1650	#endif
1304	if (ev_is_active (w))	1651	if (expect_false (ev_is_active (w)))
1305	return;	1652	return;
1306		1653
1307	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1654	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1308		1655
1309	ev_start (EV_A_ (W)w, 1);	1656	ev_start (EV_A_ (W)w, 1);
1310	array_needsize (signals, signalmax, w->signum, signals_init);	1657	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1311	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1658	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1312		1659
1313	if (!((WL)w)->next)	1660	if (!((WL)w)->next)
1314	{	1661	{
		1662	#if _WIN32
		1663	signal (w->signum, sighandler);
		1664	#else
1315	struct sigaction sa;	1665	struct sigaction sa;
1316	sa.sa_handler = sighandler;	1666	sa.sa_handler = sighandler;
1317	sigfillset (&sa.sa_mask);	1667	sigfillset (&sa.sa_mask);
1318	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1668	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1319	sigaction (w->signum, &sa, 0);	1669	sigaction (w->signum, &sa, 0);
		1670	#endif
1320	}	1671	}
1321	}	1672	}
1322		1673
1323	void	1674	void
1324	ev_signal_stop (EV_P_ struct ev_signal *w)	1675	ev_signal_stop (EV_P_ ev_signal *w)
1325	{	1676	{
1326	ev_clear_pending (EV_A_ (W)w);	1677	ev_clear_pending (EV_A_ (W)w);
1327	if (!ev_is_active (w))	1678	if (expect_false (!ev_is_active (w)))
1328	return;	1679	return;
1329		1680
1330	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1681	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1331	ev_stop (EV_A_ (W)w);	1682	ev_stop (EV_A_ (W)w);
1332		1683
1333	if (!signals [w->signum - 1].head)	1684	if (!signals [w->signum - 1].head)
1334	signal (w->signum, SIG_DFL);	1685	signal (w->signum, SIG_DFL);
1335	}	1686	}
1336		1687
1337	void	1688	void
1338	ev_child_start (EV_P_ struct ev_child *w)	1689	ev_child_start (EV_P_ ev_child *w)
1339	{	1690	{
1340	#if EV_MULTIPLICITY	1691	#if EV_MULTIPLICITY
1341	assert (("child watchers are only supported in the default loop", loop == default_loop));	1692	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1342	#endif	1693	#endif
1343	if (ev_is_active (w))	1694	if (expect_false (ev_is_active (w)))
1344	return;	1695	return;
1345		1696
1346	ev_start (EV_A_ (W)w, 1);	1697	ev_start (EV_A_ (W)w, 1);
1347	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1698	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1348	}	1699	}
1349		1700
1350	void	1701	void
1351	ev_child_stop (EV_P_ struct ev_child *w)	1702	ev_child_stop (EV_P_ ev_child *w)
1352	{	1703	{
1353	ev_clear_pending (EV_A_ (W)w);	1704	ev_clear_pending (EV_A_ (W)w);
1354	if (ev_is_active (w))	1705	if (expect_false (!ev_is_active (w)))
1355	return;	1706	return;
1356		1707
1357	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1708	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1358	ev_stop (EV_A_ (W)w);	1709	ev_stop (EV_A_ (W)w);
1359	}	1710	}
1360		1711
		1712	#if EV_STAT_ENABLE
		1713
		1714	# ifdef _WIN32
		1715	# undef lstat
		1716	# define lstat(a,b) _stati64 (a,b)
		1717	# endif
		1718
		1719	#define DEF_STAT_INTERVAL 5.0074891
		1720	#define MIN_STAT_INTERVAL 0.1074891
		1721
		1722	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1723
		1724	#if EV_USE_INOTIFY
		1725	# define EV_INOTIFY_BUFSIZE 8192
		1726
		1727	static void noinline
		1728	infy_add (EV_P_ ev_stat *w)
		1729	{
		1730	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
		1731
		1732	if (w->wd < 0)
		1733	{
		1734	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1735
		1736	/* monitor some parent directory for speedup hints */
		1737	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1738	{
		1739	char path [4096];
		1740	strcpy (path, w->path);
		1741
		1742	do
		1743	{
		1744	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1745	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1746
		1747	char *pend = strrchr (path, '/');
		1748
		1749	if (!pend)
		1750	break; /* whoops, no '/', complain to your admin */
		1751
		1752	*pend = 0;
		1753	w->wd = inotify_add_watch (fs_fd, path, mask);
		1754	}
		1755	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1756	}
		1757	}
		1758	else
		1759	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1760
		1761	if (w->wd >= 0)
		1762	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1763	}
		1764
		1765	static void noinline
		1766	infy_del (EV_P_ ev_stat *w)
		1767	{
		1768	int slot;
		1769	int wd = w->wd;
		1770
		1771	if (wd < 0)
		1772	return;
		1773
		1774	w->wd = -2;
		1775	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1776	wlist_del (&fs_hash [slot].head, (WL)w);
		1777
		1778	/* remove this watcher, if others are watching it, they will rearm */
		1779	inotify_rm_watch (fs_fd, wd);
		1780	}
		1781
		1782	static void noinline
		1783	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1784	{
		1785	if (slot < 0)
		1786	/* overflow, need to check for all hahs slots */
		1787	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1788	infy_wd (EV_A_ slot, wd, ev);
		1789	else
		1790	{
		1791	WL w_;
		1792
		1793	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1794	{
		1795	ev_stat *w = (ev_stat *)w_;
		1796	w_ = w_->next; /* lets us remove this watcher and all before it */
		1797
		1798	if (w->wd == wd || wd == -1)
		1799	{
		1800	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1801	{
		1802	w->wd = -1;
		1803	infy_add (EV_A_ w); /* re-add, no matter what */
		1804	}
		1805
		1806	stat_timer_cb (EV_A_ &w->timer, 0);
		1807	}
		1808	}
		1809	}
		1810	}
		1811
		1812	static void
		1813	infy_cb (EV_P_ ev_io *w, int revents)
		1814	{
		1815	char buf [EV_INOTIFY_BUFSIZE];
		1816	struct inotify_event *ev = (struct inotify_event *)buf;
		1817	int ofs;
		1818	int len = read (fs_fd, buf, sizeof (buf));
		1819
		1820	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1821	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1822	}
		1823
		1824	void inline_size
		1825	infy_init (EV_P)
		1826	{
		1827	if (fs_fd != -2)
		1828	return;
		1829
		1830	fs_fd = inotify_init ();
		1831
		1832	if (fs_fd >= 0)
		1833	{
		1834	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1835	ev_set_priority (&fs_w, EV_MAXPRI);
		1836	ev_io_start (EV_A_ &fs_w);
		1837	}
		1838	}
		1839
		1840	void inline_size
		1841	infy_fork (EV_P)
		1842	{
		1843	int slot;
		1844
		1845	if (fs_fd < 0)
		1846	return;
		1847
		1848	close (fs_fd);
		1849	fs_fd = inotify_init ();
		1850
		1851	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1852	{
		1853	WL w_ = fs_hash [slot].head;
		1854	fs_hash [slot].head = 0;
		1855
		1856	while (w_)
		1857	{
		1858	ev_stat *w = (ev_stat *)w_;
		1859	w_ = w_->next; /* lets us add this watcher */
		1860
		1861	w->wd = -1;
		1862
		1863	if (fs_fd >= 0)
		1864	infy_add (EV_A_ w); /* re-add, no matter what */
		1865	else
		1866	ev_timer_start (EV_A_ &w->timer);
		1867	}
		1868
		1869	}
		1870	}
		1871
		1872	#endif
		1873
		1874	void
		1875	ev_stat_stat (EV_P_ ev_stat *w)
		1876	{
		1877	if (lstat (w->path, &w->attr) < 0)
		1878	w->attr.st_nlink = 0;
		1879	else if (!w->attr.st_nlink)
		1880	w->attr.st_nlink = 1;
		1881	}
		1882
		1883	static void noinline
		1884	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1885	{
		1886	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1887
		1888	/* we copy this here each the time so that */
		1889	/* prev has the old value when the callback gets invoked */
		1890	w->prev = w->attr;
		1891	ev_stat_stat (EV_A_ w);
		1892
		1893	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1894	if (
		1895	w->prev.st_dev != w->attr.st_dev
		1896	|| w->prev.st_ino != w->attr.st_ino
		1897	|| w->prev.st_mode != w->attr.st_mode
		1898	|| w->prev.st_nlink != w->attr.st_nlink
		1899	|| w->prev.st_uid != w->attr.st_uid
		1900	|| w->prev.st_gid != w->attr.st_gid
		1901	|| w->prev.st_rdev != w->attr.st_rdev
		1902	|| w->prev.st_size != w->attr.st_size
		1903	|| w->prev.st_atime != w->attr.st_atime
		1904	|| w->prev.st_mtime != w->attr.st_mtime
		1905	|| w->prev.st_ctime != w->attr.st_ctime
		1906	) {
		1907	#if EV_USE_INOTIFY
		1908	infy_del (EV_A_ w);
		1909	infy_add (EV_A_ w);
		1910	ev_stat_stat (EV_A_ w); /* avoid race... */
		1911	#endif
		1912
		1913	ev_feed_event (EV_A_ w, EV_STAT);
		1914	}
		1915	}
		1916
		1917	void
		1918	ev_stat_start (EV_P_ ev_stat *w)
		1919	{
		1920	if (expect_false (ev_is_active (w)))
		1921	return;
		1922
		1923	/* since we use memcmp, we need to clear any padding data etc. */
		1924	memset (&w->prev, 0, sizeof (ev_statdata));
		1925	memset (&w->attr, 0, sizeof (ev_statdata));
		1926
		1927	ev_stat_stat (EV_A_ w);
		1928
		1929	if (w->interval < MIN_STAT_INTERVAL)
		1930	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1931
		1932	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1933	ev_set_priority (&w->timer, ev_priority (w));
		1934
		1935	#if EV_USE_INOTIFY
		1936	infy_init (EV_A);
		1937
		1938	if (fs_fd >= 0)
		1939	infy_add (EV_A_ w);
		1940	else
		1941	#endif
		1942	ev_timer_start (EV_A_ &w->timer);
		1943
		1944	ev_start (EV_A_ (W)w, 1);
		1945	}
		1946
		1947	void
		1948	ev_stat_stop (EV_P_ ev_stat *w)
		1949	{
		1950	ev_clear_pending (EV_A_ (W)w);
		1951	if (expect_false (!ev_is_active (w)))
		1952	return;
		1953
		1954	#if EV_USE_INOTIFY
		1955	infy_del (EV_A_ w);
		1956	#endif
		1957	ev_timer_stop (EV_A_ &w->timer);
		1958
		1959	ev_stop (EV_A_ (W)w);
		1960	}
		1961	#endif
		1962
		1963	void
		1964	ev_idle_start (EV_P_ ev_idle *w)
		1965	{
		1966	if (expect_false (ev_is_active (w)))
		1967	return;
		1968
		1969	ev_start (EV_A_ (W)w, ++idlecnt);
		1970	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1971	idles [idlecnt - 1] = w;
		1972	}
		1973
		1974	void
		1975	ev_idle_stop (EV_P_ ev_idle *w)
		1976	{
		1977	ev_clear_pending (EV_A_ (W)w);
		1978	if (expect_false (!ev_is_active (w)))
		1979	return;
		1980
		1981	{
		1982	int active = ((W)w)->active;
		1983	idles [active - 1] = idles [--idlecnt];
		1984	((W)idles [active - 1])->active = active;
		1985	}
		1986
		1987	ev_stop (EV_A_ (W)w);
		1988	}
		1989
		1990	void
		1991	ev_prepare_start (EV_P_ ev_prepare *w)
		1992	{
		1993	if (expect_false (ev_is_active (w)))
		1994	return;
		1995
		1996	ev_start (EV_A_ (W)w, ++preparecnt);
		1997	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1998	prepares [preparecnt - 1] = w;
		1999	}
		2000
		2001	void
		2002	ev_prepare_stop (EV_P_ ev_prepare *w)
		2003	{
		2004	ev_clear_pending (EV_A_ (W)w);
		2005	if (expect_false (!ev_is_active (w)))
		2006	return;
		2007
		2008	{
		2009	int active = ((W)w)->active;
		2010	prepares [active - 1] = prepares [--preparecnt];
		2011	((W)prepares [active - 1])->active = active;
		2012	}
		2013
		2014	ev_stop (EV_A_ (W)w);
		2015	}
		2016
		2017	void
		2018	ev_check_start (EV_P_ ev_check *w)
		2019	{
		2020	if (expect_false (ev_is_active (w)))
		2021	return;
		2022
		2023	ev_start (EV_A_ (W)w, ++checkcnt);
		2024	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2025	checks [checkcnt - 1] = w;
		2026	}
		2027
		2028	void
		2029	ev_check_stop (EV_P_ ev_check *w)
		2030	{
		2031	ev_clear_pending (EV_A_ (W)w);
		2032	if (expect_false (!ev_is_active (w)))
		2033	return;
		2034
		2035	{
		2036	int active = ((W)w)->active;
		2037	checks [active - 1] = checks [--checkcnt];
		2038	((W)checks [active - 1])->active = active;
		2039	}
		2040
		2041	ev_stop (EV_A_ (W)w);
		2042	}
		2043
		2044	#if EV_EMBED_ENABLE
		2045	void noinline
		2046	ev_embed_sweep (EV_P_ ev_embed *w)
		2047	{
		2048	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2049	}
		2050
		2051	static void
		2052	embed_cb (EV_P_ ev_io *io, int revents)
		2053	{
		2054	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2055
		2056	if (ev_cb (w))
		2057	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2058	else
		2059	ev_embed_sweep (loop, w);
		2060	}
		2061
		2062	void
		2063	ev_embed_start (EV_P_ ev_embed *w)
		2064	{
		2065	if (expect_false (ev_is_active (w)))
		2066	return;
		2067
		2068	{
		2069	struct ev_loop *loop = w->loop;
		2070	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2071	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2072	}
		2073
		2074	ev_set_priority (&w->io, ev_priority (w));
		2075	ev_io_start (EV_A_ &w->io);
		2076
		2077	ev_start (EV_A_ (W)w, 1);
		2078	}
		2079
		2080	void
		2081	ev_embed_stop (EV_P_ ev_embed *w)
		2082	{
		2083	ev_clear_pending (EV_A_ (W)w);
		2084	if (expect_false (!ev_is_active (w)))
		2085	return;
		2086
		2087	ev_io_stop (EV_A_ &w->io);
		2088
		2089	ev_stop (EV_A_ (W)w);
		2090	}
		2091	#endif
		2092
		2093	#if EV_FORK_ENABLE
		2094	void
		2095	ev_fork_start (EV_P_ ev_fork *w)
		2096	{
		2097	if (expect_false (ev_is_active (w)))
		2098	return;
		2099
		2100	ev_start (EV_A_ (W)w, ++forkcnt);
		2101	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2102	forks [forkcnt - 1] = w;
		2103	}
		2104
		2105	void
		2106	ev_fork_stop (EV_P_ ev_fork *w)
		2107	{
		2108	ev_clear_pending (EV_A_ (W)w);
		2109	if (expect_false (!ev_is_active (w)))
		2110	return;
		2111
		2112	{
		2113	int active = ((W)w)->active;
		2114	forks [active - 1] = forks [--forkcnt];
		2115	((W)forks [active - 1])->active = active;
		2116	}
		2117
		2118	ev_stop (EV_A_ (W)w);
		2119	}
		2120	#endif
		2121
1361	/*****************************************************************************/	2122	/*****************************************************************************/
1362		2123
1363	struct ev_once	2124	struct ev_once
1364	{	2125	{
1365	struct ev_io io;	2126	ev_io io;
1366	struct ev_timer to;	2127	ev_timer to;
1367	void (*cb)(int revents, void *arg);	2128	void (*cb)(int revents, void *arg);
1368	void *arg;	2129	void *arg;
1369	};	2130	};
1370		2131
1371	static void	2132	static void
…		…
1374	void (*cb)(int revents, void *arg) = once->cb;	2135	void (*cb)(int revents, void *arg) = once->cb;
1375	void *arg = once->arg;	2136	void *arg = once->arg;
1376		2137
1377	ev_io_stop (EV_A_ &once->io);	2138	ev_io_stop (EV_A_ &once->io);
1378	ev_timer_stop (EV_A_ &once->to);	2139	ev_timer_stop (EV_A_ &once->to);
1379	free (once);	2140	ev_free (once);
1380		2141
1381	cb (revents, arg);	2142	cb (revents, arg);
1382	}	2143	}
1383		2144
1384	static void	2145	static void
1385	once_cb_io (EV_P_ struct ev_io *w, int revents)	2146	once_cb_io (EV_P_ ev_io *w, int revents)
1386	{	2147	{
1387	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2148	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1388	}	2149	}
1389		2150
1390	static void	2151	static void
1391	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2152	once_cb_to (EV_P_ ev_timer *w, int revents)
1392	{	2153	{
1393	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2154	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1394	}	2155	}
1395		2156
1396	void	2157	void
1397	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2158	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1398	{	2159	{
1399	struct ev_once *once = malloc (sizeof (struct ev_once));	2160	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1400		2161
1401	if (!once)	2162	if (expect_false (!once))
		2163	{
1402	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2164	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1403	else	2165	return;
1404	{	2166	}
		2167
1405	once->cb = cb;	2168	once->cb = cb;
1406	once->arg = arg;	2169	once->arg = arg;
1407		2170
1408	ev_watcher_init (&once->io, once_cb_io);	2171	ev_init (&once->io, once_cb_io);
1409	if (fd >= 0)	2172	if (fd >= 0)
1410	{	2173	{
1411	ev_io_set (&once->io, fd, events);	2174	ev_io_set (&once->io, fd, events);
1412	ev_io_start (EV_A_ &once->io);	2175	ev_io_start (EV_A_ &once->io);
1413	}	2176	}
1414		2177
1415	ev_watcher_init (&once->to, once_cb_to);	2178	ev_init (&once->to, once_cb_to);
1416	if (timeout >= 0.)	2179	if (timeout >= 0.)
1417	{	2180	{
1418	ev_timer_set (&once->to, timeout, 0.);	2181	ev_timer_set (&once->to, timeout, 0.);
1419	ev_timer_start (EV_A_ &once->to);	2182	ev_timer_start (EV_A_ &once->to);
1420	}
1421	}	2183	}
1422	}	2184	}
1423		2185
		2186	#ifdef __cplusplus
		2187	}
		2188	#endif
		2189

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