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Comparing libev/ev.c (file contents):
Revision 1.64 by root, Sun Nov 4 23:14:11 2007 UTC vs.
Revision 1.158 by root, Thu Nov 29 17:28:13 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
33		42
34	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
37	# endif	57	# endif
38		58
		59	# ifndef EV_USE_SELECT
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
40	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
41	# endif	65	# endif
42		66
		67	# ifndef EV_USE_POLL
43	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
44	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
45	# endif	73	# endif
46		74
		75	# ifndef EV_USE_EPOLL
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
49	# endif	81	# endif
50		82
		83	# ifndef EV_USE_KQUEUE
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
		97	# endif
		98
		99	# ifndef EV_USE_INOTIFY
		100	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		101	# define EV_USE_INOTIFY 1
		102	# else
		103	# define EV_USE_INOTIFY 0
		104	# endif
53	# endif	105	# endif
54		106
55	#endif	107	#endif
56		108
57	#include <math.h>	109	#include <math.h>
58	#include <stdlib.h>	110	#include <stdlib.h>
59	#include <unistd.h>
60	#include <fcntl.h>	111	#include <fcntl.h>
61	#include <signal.h>
62	#include <stddef.h>	112	#include <stddef.h>
63		113
64	#include <stdio.h>	114	#include <stdio.h>
65		115
66	#include <assert.h>	116	#include <assert.h>
67	#include <errno.h>	117	#include <errno.h>
68	#include <sys/types.h>	118	#include <sys/types.h>
		119	#include <time.h>
		120
		121	#include <signal.h>
		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
69	#ifndef WIN32	129	#ifndef _WIN32
		130	# include <sys/time.h>
70	# include <sys/wait.h>	131	# include <sys/wait.h>
		132	# include <unistd.h>
		133	#else
		134	# define WIN32_LEAN_AND_MEAN
		135	# include <windows.h>
		136	# ifndef EV_SELECT_IS_WINSOCKET
		137	# define EV_SELECT_IS_WINSOCKET 1
71	#endif	138	# endif
72	#include <sys/time.h>	139	#endif
73	#include <time.h>
74		140
75	/**/	141	/**/
76		142
77	#ifndef EV_USE_MONOTONIC	143	#ifndef EV_USE_MONOTONIC
78	# define EV_USE_MONOTONIC 1	144	# define EV_USE_MONOTONIC 0
		145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
79	#endif	149	#endif
80		150
81	#ifndef EV_USE_SELECT	151	#ifndef EV_USE_SELECT
82	# define EV_USE_SELECT 1	152	# define EV_USE_SELECT 1
83	#endif	153	#endif
84		154
85	#ifndef EV_USE_POLL	155	#ifndef EV_USE_POLL
86	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	156	# ifdef _WIN32
		157	# define EV_USE_POLL 0
		158	# else
		159	# define EV_USE_POLL 1
		160	# endif
87	#endif	161	#endif
88		162
89	#ifndef EV_USE_EPOLL	163	#ifndef EV_USE_EPOLL
90	# define EV_USE_EPOLL 0	164	# define EV_USE_EPOLL 0
91	#endif	165	#endif
92		166
93	#ifndef EV_USE_KQUEUE	167	#ifndef EV_USE_KQUEUE
94	# define EV_USE_KQUEUE 0	168	# define EV_USE_KQUEUE 0
95	#endif	169	#endif
96		170
		171	#ifndef EV_USE_PORT
		172	# define EV_USE_PORT 0
		173	#endif
		174
97	#ifndef EV_USE_WIN32	175	#ifndef EV_USE_INOTIFY
98	# ifdef WIN32	176	# define EV_USE_INOTIFY 0
99	# define EV_USE_WIN32 1	177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
100	# else	182	# else
101	# define EV_USE_WIN32 0	183	# define EV_PID_HASHSIZE 16
102	# endif	184	# endif
103	#endif	185	#endif
104		186
105	#ifndef EV_USE_REALTIME	187	#ifndef EV_INOTIFY_HASHSIZE
106	# define EV_USE_REALTIME 1	188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
107	#endif	193	#endif
108		194
109	/**/	195	/**/
110		196
111	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
…		…
116	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
117	# undef EV_USE_REALTIME	203	# undef EV_USE_REALTIME
118	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
119	#endif	205	#endif
120		206
		207	#if EV_SELECT_IS_WINSOCKET
		208	# include <winsock.h>
		209	#endif
		210
		211	#if !EV_STAT_ENABLE
		212	# define EV_USE_INOTIFY 0
		213	#endif
		214
		215	#if EV_USE_INOTIFY
		216	# include <sys/inotify.h>
		217	#endif
		218
121	/**/	219	/**/
122		220
123	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	221	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
124	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	222	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
125	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
126	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	223	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
127
128	#include "ev.h"
129		224
130	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
131	# define expect(expr,value) __builtin_expect ((expr),(value))	226	# define expect(expr,value) __builtin_expect ((expr),(value))
		227	# define inline_size static inline /* inline for codesize */
		228	# if EV_MINIMAL
132	# define inline inline	229	# define noinline __attribute__ ((noinline))
		230	# define inline_speed static noinline
		231	# else
		232	# define noinline
		233	# define inline_speed static inline
		234	# endif
133	#else	235	#else
134	# define expect(expr,value) (expr)	236	# define expect(expr,value) (expr)
		237	# define inline_speed static
135	# define inline static	238	# define inline_size static
		239	# define noinline
136	#endif	240	#endif
137		241
138	#define expect_false(expr) expect ((expr) != 0, 0)	242	#define expect_false(expr) expect ((expr) != 0, 0)
139	#define expect_true(expr) expect ((expr) != 0, 1)	243	#define expect_true(expr) expect ((expr) != 0, 1)
140		244
141	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	246	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
143		247
		248	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		249	#define EMPTY2(a,b) /* used to suppress some warnings */
		250
144	typedef struct ev_watcher *W;	251	typedef ev_watcher *W;
145	typedef struct ev_watcher_list *WL;	252	typedef ev_watcher_list *WL;
146	typedef struct ev_watcher_time *WT;	253	typedef ev_watcher_time *WT;
147		254
148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149		256
		257	#ifdef _WIN32
		258	# include "ev_win32.c"
		259	#endif
		260
150	/*****************************************************************************/	261	/*****************************************************************************/
151		262
		263	static void (*syserr_cb)(const char *msg);
		264
		265	void
		266	ev_set_syserr_cb (void (*cb)(const char *msg))
		267	{
		268	syserr_cb = cb;
		269	}
		270
		271	static void noinline
		272	syserr (const char *msg)
		273	{
		274	if (!msg)
		275	msg = "(libev) system error";
		276
		277	if (syserr_cb)
		278	syserr_cb (msg);
		279	else
		280	{
		281	perror (msg);
		282	abort ();
		283	}
		284	}
		285
		286	static void *(*alloc)(void *ptr, long size);
		287
		288	void
		289	ev_set_allocator (void *(*cb)(void *ptr, long size))
		290	{
		291	alloc = cb;
		292	}
		293
		294	inline_speed void *
		295	ev_realloc (void *ptr, long size)
		296	{
		297	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		298
		299	if (!ptr && size)
		300	{
		301	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		302	abort ();
		303	}
		304
		305	return ptr;
		306	}
		307
		308	#define ev_malloc(size) ev_realloc (0, (size))
		309	#define ev_free(ptr) ev_realloc ((ptr), 0)
		310
		311	/*****************************************************************************/
		312
152	typedef struct	313	typedef struct
153	{	314	{
154	struct ev_watcher_list *head;	315	WL head;
155	unsigned char events;	316	unsigned char events;
156	unsigned char reify;	317	unsigned char reify;
		318	#if EV_SELECT_IS_WINSOCKET
		319	SOCKET handle;
		320	#endif
157	} ANFD;	321	} ANFD;
158		322
159	typedef struct	323	typedef struct
160	{	324	{
161	W w;	325	W w;
162	int events;	326	int events;
163	} ANPENDING;	327	} ANPENDING;
164		328
		329	#if EV_USE_INOTIFY
		330	typedef struct
		331	{
		332	WL head;
		333	} ANFS;
		334	#endif
		335
165	#if EV_MULTIPLICITY	336	#if EV_MULTIPLICITY
166		337
167	struct ev_loop	338	struct ev_loop
168	{	339	{
		340	ev_tstamp ev_rt_now;
		341	#define ev_rt_now ((loop)->ev_rt_now)
169	# define VAR(name,decl) decl;	342	#define VAR(name,decl) decl;
170	# include "ev_vars.h"	343	#include "ev_vars.h"
171	};
172	# undef VAR	344	#undef VAR
		345	};
173	# include "ev_wrap.h"	346	#include "ev_wrap.h"
		347
		348	static struct ev_loop default_loop_struct;
		349	struct ev_loop *ev_default_loop_ptr;
174		350
175	#else	351	#else
176		352
		353	ev_tstamp ev_rt_now;
177	# define VAR(name,decl) static decl;	354	#define VAR(name,decl) static decl;
178	# include "ev_vars.h"	355	#include "ev_vars.h"
179	# undef VAR	356	#undef VAR
		357
		358	static int ev_default_loop_ptr;
180		359
181	#endif	360	#endif
182		361
183	/*****************************************************************************/	362	/*****************************************************************************/
184		363
185	inline ev_tstamp	364	ev_tstamp
186	ev_time (void)	365	ev_time (void)
187	{	366	{
188	#if EV_USE_REALTIME	367	#if EV_USE_REALTIME
189	struct timespec ts;	368	struct timespec ts;
190	clock_gettime (CLOCK_REALTIME, &ts);	369	clock_gettime (CLOCK_REALTIME, &ts);
…		…
194	gettimeofday (&tv, 0);	373	gettimeofday (&tv, 0);
195	return tv.tv_sec + tv.tv_usec * 1e-6;	374	return tv.tv_sec + tv.tv_usec * 1e-6;
196	#endif	375	#endif
197	}	376	}
198		377
199	inline ev_tstamp	378	ev_tstamp inline_size
200	get_clock (void)	379	get_clock (void)
201	{	380	{
202	#if EV_USE_MONOTONIC	381	#if EV_USE_MONOTONIC
203	if (expect_true (have_monotonic))	382	if (expect_true (have_monotonic))
204	{	383	{
…		…
209	#endif	388	#endif
210		389
211	return ev_time ();	390	return ev_time ();
212	}	391	}
213		392
		393	#if EV_MULTIPLICITY
214	ev_tstamp	394	ev_tstamp
215	ev_now (EV_P)	395	ev_now (EV_P)
216	{	396	{
217	return rt_now;	397	return ev_rt_now;
218	}	398	}
		399	#endif
219		400
220	#define array_roundsize(base,n) ((n) | 4 & ~3)	401	#define array_roundsize(type,n) (((n) | 4) & ~3)
221		402
222	#define array_needsize(base,cur,cnt,init) \	403	#define array_needsize(type,base,cur,cnt,init) \
223	if (expect_false ((cnt) > cur)) \	404	if (expect_false ((cnt) > cur)) \
224	{ \	405	{ \
225	int newcnt = cur; \	406	int newcnt = cur; \
226	do \	407	do \
227	{ \	408	{ \
228	newcnt = array_roundsize (base, newcnt << 1); \	409	newcnt = array_roundsize (type, newcnt << 1); \
229	} \	410	} \
230	while ((cnt) > newcnt); \	411	while ((cnt) > newcnt); \
231	\	412	\
232	base = realloc (base, sizeof (*base) * (newcnt)); \	413	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
233	init (base + cur, newcnt - cur); \	414	init (base + cur, newcnt - cur); \
234	cur = newcnt; \	415	cur = newcnt; \
235	}	416	}
		417
		418	#define array_slim(type,stem) \
		419	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		420	{ \
		421	stem ## max = array_roundsize (stem ## cnt >> 1); \
		422	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		423	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		424	}
		425
		426	#define array_free(stem, idx) \
		427	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
236		428
237	/*****************************************************************************/	429	/*****************************************************************************/
238		430
239	static void	431	void noinline
		432	ev_feed_event (EV_P_ void *w, int revents)
		433	{
		434	W w_ = (W)w;
		435
		436	if (expect_false (w_->pending))
		437	{
		438	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		439	return;
		440	}
		441
		442	w_->pending = ++pendingcnt [ABSPRI (w_)];
		443	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		444	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		445	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		446	}
		447
		448	void inline_size
		449	queue_events (EV_P_ W *events, int eventcnt, int type)
		450	{
		451	int i;
		452
		453	for (i = 0; i < eventcnt; ++i)
		454	ev_feed_event (EV_A_ events [i], type);
		455	}
		456
		457	/*****************************************************************************/
		458
		459	void inline_size
240	anfds_init (ANFD *base, int count)	460	anfds_init (ANFD *base, int count)
241	{	461	{
242	while (count--)	462	while (count--)
243	{	463	{
244	base->head = 0;	464	base->head = 0;
…		…
247		467
248	++base;	468	++base;
249	}	469	}
250	}	470	}
251		471
252	static void	472	void inline_speed
253	event (EV_P_ W w, int events)
254	{
255	if (w->pending)
256	{
257	pendings [ABSPRI (w)][w->pending - 1].events |= events;
258	return;
259	}
260
261	w->pending = ++pendingcnt [ABSPRI (w)];
262	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
263	pendings [ABSPRI (w)][w->pending - 1].w = w;
264	pendings [ABSPRI (w)][w->pending - 1].events = events;
265	}
266
267	static void
268	queue_events (EV_P_ W *events, int eventcnt, int type)
269	{
270	int i;
271
272	for (i = 0; i < eventcnt; ++i)
273	event (EV_A_ events [i], type);
274	}
275
276	static void
277	fd_event (EV_P_ int fd, int events)	473	fd_event (EV_P_ int fd, int revents)
278	{	474	{
279	ANFD *anfd = anfds + fd;	475	ANFD *anfd = anfds + fd;
280	struct ev_io *w;	476	ev_io *w;
281		477
282	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	478	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
283	{	479	{
284	int ev = w->events & events;	480	int ev = w->events & revents;
285		481
286	if (ev)	482	if (ev)
287	event (EV_A_ (W)w, ev);	483	ev_feed_event (EV_A_ (W)w, ev);
288	}	484	}
289	}	485	}
290		486
291	/*****************************************************************************/	487	void
		488	ev_feed_fd_event (EV_P_ int fd, int revents)
		489	{
		490	fd_event (EV_A_ fd, revents);
		491	}
292		492
293	static void	493	void inline_size
294	fd_reify (EV_P)	494	fd_reify (EV_P)
295	{	495	{
296	int i;	496	int i;
297		497
298	for (i = 0; i < fdchangecnt; ++i)	498	for (i = 0; i < fdchangecnt; ++i)
299	{	499	{
300	int fd = fdchanges [i];	500	int fd = fdchanges [i];
301	ANFD *anfd = anfds + fd;	501	ANFD *anfd = anfds + fd;
302	struct ev_io *w;	502	ev_io *w;
303		503
304	int events = 0;	504	int events = 0;
305		505
306	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	506	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
307	events |= w->events;	507	events |= w->events;
308		508
		509	#if EV_SELECT_IS_WINSOCKET
		510	if (events)
		511	{
		512	unsigned long argp;
		513	anfd->handle = _get_osfhandle (fd);
		514	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		515	}
		516	#endif
		517
309	anfd->reify = 0;	518	anfd->reify = 0;
310		519
311	method_modify (EV_A_ fd, anfd->events, events);	520	backend_modify (EV_A_ fd, anfd->events, events);
312	anfd->events = events;	521	anfd->events = events;
313	}	522	}
314		523
315	fdchangecnt = 0;	524	fdchangecnt = 0;
316	}	525	}
317		526
318	static void	527	void inline_size
319	fd_change (EV_P_ int fd)	528	fd_change (EV_P_ int fd)
320	{	529	{
321	if (anfds [fd].reify || fdchangecnt < 0)	530	if (expect_false (anfds [fd].reify))
322	return;	531	return;
323		532
324	anfds [fd].reify = 1;	533	anfds [fd].reify = 1;
325		534
326	++fdchangecnt;	535	++fdchangecnt;
327	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	536	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
328	fdchanges [fdchangecnt - 1] = fd;	537	fdchanges [fdchangecnt - 1] = fd;
329	}	538	}
330		539
331	static void	540	void inline_speed
332	fd_kill (EV_P_ int fd)	541	fd_kill (EV_P_ int fd)
333	{	542	{
334	struct ev_io *w;	543	ev_io *w;
335		544
336	while ((w = (struct ev_io *)anfds [fd].head))	545	while ((w = (ev_io *)anfds [fd].head))
337	{	546	{
338	ev_io_stop (EV_A_ w);	547	ev_io_stop (EV_A_ w);
339	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);
340	}	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
341	}	560	}
342		561
343	/* called on EBADF to verify fds */	562	/* called on EBADF to verify fds */
344	static void	563	static void noinline
345	fd_ebadf (EV_P)	564	fd_ebadf (EV_P)
346	{	565	{
347	int fd;	566	int fd;
348		567
349	for (fd = 0; fd < anfdmax; ++fd)	568	for (fd = 0; fd < anfdmax; ++fd)
350	if (anfds [fd].events)	569	if (anfds [fd].events)
351	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	570	if (!fd_valid (fd) == -1 && errno == EBADF)
352	fd_kill (EV_A_ fd);	571	fd_kill (EV_A_ fd);
353	}	572	}
354		573
355	/* 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 */
356	static void	575	static void noinline
357	fd_enomem (EV_P)	576	fd_enomem (EV_P)
358	{	577	{
359	int fd;	578	int fd;
360		579
361	for (fd = anfdmax; fd--; )	580	for (fd = anfdmax; fd--; )
362	if (anfds [fd].events)	581	if (anfds [fd].events)
363	{	582	{
364	close (fd);
365	fd_kill (EV_A_ fd);	583	fd_kill (EV_A_ fd);
366	return;	584	return;
367	}	585	}
368	}	586	}
369		587
370	/* 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 */
371	static void	589	static void noinline
372	fd_rearm_all (EV_P)	590	fd_rearm_all (EV_P)
373	{	591	{
374	int fd;	592	int fd;
375		593
376	/* this should be highly optimised to not do anything but set a flag */
377	for (fd = 0; fd < anfdmax; ++fd)	594	for (fd = 0; fd < anfdmax; ++fd)
378	if (anfds [fd].events)	595	if (anfds [fd].events)
379	{	596	{
380	anfds [fd].events = 0;	597	anfds [fd].events = 0;
381	fd_change (EV_A_ fd);	598	fd_change (EV_A_ fd);
382	}	599	}
383	}	600	}
384		601
385	/*****************************************************************************/	602	/*****************************************************************************/
386		603
387	static void	604	void inline_speed
388	upheap (WT *heap, int k)	605	upheap (WT *heap, int k)
389	{	606	{
390	WT w = heap [k];	607	WT w = heap [k];
391		608
392	while (k && heap [k >> 1]->at > w->at)	609	while (k && heap [k >> 1]->at > w->at)
…		…
399	heap [k] = w;	616	heap [k] = w;
400	((W)heap [k])->active = k + 1;	617	((W)heap [k])->active = k + 1;
401		618
402	}	619	}
403		620
404	static void	621	void inline_speed
405	downheap (WT *heap, int N, int k)	622	downheap (WT *heap, int N, int k)
406	{	623	{
407	WT w = heap [k];	624	WT w = heap [k];
408		625
409	while (k < (N >> 1))	626	while (k < (N >> 1))
…		…
423		640
424	heap [k] = w;	641	heap [k] = w;
425	((W)heap [k])->active = k + 1;	642	((W)heap [k])->active = k + 1;
426	}	643	}
427		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
428	/*****************************************************************************/	652	/*****************************************************************************/
429		653
430	typedef struct	654	typedef struct
431	{	655	{
432	struct ev_watcher_list *head;	656	WL head;
433	sig_atomic_t volatile gotsig;	657	sig_atomic_t volatile gotsig;
434	} ANSIG;	658	} ANSIG;
435		659
436	static ANSIG *signals;	660	static ANSIG *signals;
437	static int signalmax;	661	static int signalmax;
438		662
439	static int sigpipe [2];	663	static int sigpipe [2];
440	static sig_atomic_t volatile gotsig;	664	static sig_atomic_t volatile gotsig;
441	static struct ev_io sigev;	665	static ev_io sigev;
442		666
443	static void	667	void inline_size
444	signals_init (ANSIG *base, int count)	668	signals_init (ANSIG *base, int count)
445	{	669	{
446	while (count--)	670	while (count--)
447	{	671	{
448	base->head = 0;	672	base->head = 0;
…		…
453	}	677	}
454		678
455	static void	679	static void
456	sighandler (int signum)	680	sighandler (int signum)
457	{	681	{
		682	#if _WIN32
		683	signal (signum, sighandler);
		684	#endif
		685
458	signals [signum - 1].gotsig = 1;	686	signals [signum - 1].gotsig = 1;
459		687
460	if (!gotsig)	688	if (!gotsig)
461	{	689	{
462	int old_errno = errno;	690	int old_errno = errno;
…		…
464	write (sigpipe [1], &signum, 1);	692	write (sigpipe [1], &signum, 1);
465	errno = old_errno;	693	errno = old_errno;
466	}	694	}
467	}	695	}
468		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
469	static void	717	static void
470	sigcb (EV_P_ struct ev_io *iow, int revents)	718	sigcb (EV_P_ ev_io *iow, int revents)
471	{	719	{
472	struct ev_watcher_list *w;
473	int signum;	720	int signum;
474		721
475	read (sigpipe [0], &revents, 1);	722	read (sigpipe [0], &revents, 1);
476	gotsig = 0;	723	gotsig = 0;
477		724
478	for (signum = signalmax; signum--; )	725	for (signum = signalmax; signum--; )
479	if (signals [signum].gotsig)	726	if (signals [signum].gotsig)
480	{	727	ev_feed_signal_event (EV_A_ signum + 1);
481	signals [signum].gotsig = 0;
482
483	for (w = signals [signum].head; w; w = w->next)
484	event (EV_A_ (W)w, EV_SIGNAL);
485	}
486	}	728	}
487		729
488	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
489	siginit (EV_P)	743	siginit (EV_P)
490	{	744	{
491	#ifndef WIN32	745	fd_intern (sigpipe [0]);
492	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	746	fd_intern (sigpipe [1]);
493	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
494
495	/* rather than sort out wether we really need nb, set it */
496	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
497	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
498	#endif
499		747
500	ev_io_set (&sigev, sigpipe [0], EV_READ);	748	ev_io_set (&sigev, sigpipe [0], EV_READ);
501	ev_io_start (EV_A_ &sigev);	749	ev_io_start (EV_A_ &sigev);
502	ev_unref (EV_A); /* child watcher should not keep loop alive */	750	ev_unref (EV_A); /* child watcher should not keep loop alive */
503	}	751	}
504		752
505	/*****************************************************************************/	753	/*****************************************************************************/
506		754
		755	static ev_child *childs [EV_PID_HASHSIZE];
		756
507	#ifndef WIN32	757	#ifndef _WIN32
508		758
509	static struct ev_child *childs [PID_HASHSIZE];
510	static struct ev_signal childev;	759	static ev_signal childev;
511		760
512	#ifndef WCONTINUED	761	void inline_speed
513	# define WCONTINUED 0
514	#endif
515
516	static void
517	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)
518	{	763	{
519	struct ev_child *w;	764	ev_child *w;
520		765
521	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)
522	if (w->pid == pid || !w->pid)	767	if (w->pid == pid || !w->pid)
523	{	768	{
524	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	769	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
525	w->rpid = pid;	770	w->rpid = pid;
526	w->rstatus = status;	771	w->rstatus = status;
527	event (EV_A_ (W)w, EV_CHILD);	772	ev_feed_event (EV_A_ (W)w, EV_CHILD);
528	}	773	}
529	}	774	}
530		775
		776	#ifndef WCONTINUED
		777	# define WCONTINUED 0
		778	#endif
		779
531	static void	780	static void
532	childcb (EV_P_ struct ev_signal *sw, int revents)	781	childcb (EV_P_ ev_signal *sw, int revents)
533	{	782	{
534	int pid, status;	783	int pid, status;
535		784
		785	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
536	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	786	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
537	{	787	if (!WCONTINUED
		788	|| errno != EINVAL
		789	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		790	return;
		791
538	/* 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 */
539	event (EV_A_ (W)sw, EV_SIGNAL);	794	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
540		795
541	child_reap (EV_A_ sw, pid, pid, status);	796	child_reap (EV_A_ sw, pid, pid, status);
		797	if (EV_PID_HASHSIZE > 1)
542	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 */
543	}
544	}	799	}
545		800
546	#endif	801	#endif
547		802
548	/*****************************************************************************/	803	/*****************************************************************************/
549		804
		805	#if EV_USE_PORT
		806	# include "ev_port.c"
		807	#endif
550	#if EV_USE_KQUEUE	808	#if EV_USE_KQUEUE
551	# include "ev_kqueue.c"	809	# include "ev_kqueue.c"
552	#endif	810	#endif
553	#if EV_USE_EPOLL	811	#if EV_USE_EPOLL
554	# include "ev_epoll.c"	812	# include "ev_epoll.c"
…		…
571	{	829	{
572	return EV_VERSION_MINOR;	830	return EV_VERSION_MINOR;
573	}	831	}
574		832
575	/* 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 */
576	static int	834	int inline_size
577	enable_secure (void)	835	enable_secure (void)
578	{	836	{
579	#ifdef WIN32	837	#ifdef _WIN32
580	return 0;	838	return 0;
581	#else	839	#else
582	return getuid () != geteuid ()	840	return getuid () != geteuid ()
583	|| getgid () != getegid ();	841	|| getgid () != getegid ();
584	#endif	842	#endif
585	}	843	}
586		844
587	int	845	unsigned int
588	ev_method (EV_P)	846	ev_supported_backends (void)
589	{	847	{
590	return method;	848	unsigned int flags = 0;
591	}
592		849
593	static void	850	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
594	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)
595	{	861	{
596	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)
597	{	895	{
598	#if EV_USE_MONOTONIC	896	#if EV_USE_MONOTONIC
599	{	897	{
600	struct timespec ts;	898	struct timespec ts;
601	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	899	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
602	have_monotonic = 1;	900	have_monotonic = 1;
603	}	901	}
604	#endif	902	#endif
605		903
606	rt_now = ev_time ();	904	ev_rt_now = ev_time ();
607	mn_now = get_clock ();	905	mn_now = get_clock ();
608	now_floor = mn_now;	906	now_floor = mn_now;
609	rtmn_diff = rt_now - mn_now;	907	rtmn_diff = ev_rt_now - mn_now;
610		908
611	if (methods == EVMETHOD_AUTO)	909	/* pid check not overridable via env */
612	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"))
613	methods = atoi (getenv ("LIBEV_METHODS"));	918	flags = atoi (getenv ("LIBEV_FLAGS"));
614	else
615	methods = EVMETHOD_ANY;
616		919
617	method = 0;	920	if (!(flags & 0x0000ffffUL))
		921	flags |= ev_recommended_backends ();
		922
		923	backend = 0;
		924	backend_fd = -1;
618	#if EV_USE_WIN32	925	#if EV_USE_INOTIFY
619	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	926	fs_fd = -2;
		927	#endif
		928
		929	#if EV_USE_PORT
		930	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
620	#endif	931	#endif
621	#if EV_USE_KQUEUE	932	#if EV_USE_KQUEUE
622	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	933	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
623	#endif	934	#endif
624	#if EV_USE_EPOLL	935	#if EV_USE_EPOLL
625	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	936	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
626	#endif	937	#endif
627	#if EV_USE_POLL	938	#if EV_USE_POLL
628	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	939	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
629	#endif	940	#endif
630	#if EV_USE_SELECT	941	#if EV_USE_SELECT
631	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	942	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
632	#endif	943	#endif
633	}
634	}
635		944
636	void	945	ev_init (&sigev, sigcb);
		946	ev_set_priority (&sigev, EV_MAXPRI);
		947	}
		948	}
		949
		950	static void noinline
637	loop_destroy (EV_P)	951	loop_destroy (EV_P)
638	{	952	{
		953	int i;
		954
639	#if EV_USE_WIN32	955	#if EV_USE_INOTIFY
640	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	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);
641	#endif	965	#endif
642	#if EV_USE_KQUEUE	966	#if EV_USE_KQUEUE
643	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	967	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
644	#endif	968	#endif
645	#if EV_USE_EPOLL	969	#if EV_USE_EPOLL
646	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	970	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
647	#endif	971	#endif
648	#if EV_USE_POLL	972	#if EV_USE_POLL
649	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	973	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
650	#endif	974	#endif
651	#if EV_USE_SELECT	975	#if EV_USE_SELECT
652	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	976	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
653	#endif	977	#endif
654		978
655	method = 0;	979	for (i = NUMPRI; i--; )
656	/*TODO*/	980	array_free (pending, [i]);
657	}
658		981
659	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
660	loop_fork (EV_P)	998	loop_fork (EV_P)
661	{	999	{
662	/*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
663	#if EV_USE_EPOLL	1006	#if EV_USE_EPOLL
664	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1007	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
665	#endif	1008	#endif
666	#if EV_USE_KQUEUE	1009	#if EV_USE_INOTIFY
667	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1010	infy_fork (EV_A);
668	#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;
669	}	1029	}
670		1030
671	#if EV_MULTIPLICITY	1031	#if EV_MULTIPLICITY
672	struct ev_loop *	1032	struct ev_loop *
673	ev_loop_new (int methods)	1033	ev_loop_new (unsigned int flags)
674	{	1034	{
675	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));
676		1036
		1037	memset (loop, 0, sizeof (struct ev_loop));
		1038
677	loop_init (EV_A_ methods);	1039	loop_init (EV_A_ flags);
678		1040
679	if (ev_method (EV_A))	1041	if (ev_backend (EV_A))
680	return loop;	1042	return loop;
681		1043
682	return 0;	1044	return 0;
683	}	1045	}
684		1046
685	void	1047	void
686	ev_loop_destroy (EV_P)	1048	ev_loop_destroy (EV_P)
687	{	1049	{
688	loop_destroy (EV_A);	1050	loop_destroy (EV_A);
689	free (loop);	1051	ev_free (loop);
690	}	1052	}
691		1053
692	void	1054	void
693	ev_loop_fork (EV_P)	1055	ev_loop_fork (EV_P)
694	{	1056	{
695	loop_fork (EV_A);	1057	postfork = 1;
696	}	1058	}
697		1059
698	#endif	1060	#endif
699		1061
700	#if EV_MULTIPLICITY	1062	#if EV_MULTIPLICITY
701	struct ev_loop default_loop_struct;
702	static struct ev_loop *default_loop;
703
704	struct ev_loop *	1063	struct ev_loop *
		1064	ev_default_loop_init (unsigned int flags)
705	#else	1065	#else
706	static int default_loop;
707
708	int	1066	int
		1067	ev_default_loop (unsigned int flags)
709	#endif	1068	#endif
710	ev_default_loop (int methods)
711	{	1069	{
712	if (sigpipe [0] == sigpipe [1])	1070	if (sigpipe [0] == sigpipe [1])
713	if (pipe (sigpipe))	1071	if (pipe (sigpipe))
714	return 0;	1072	return 0;
715		1073
716	if (!default_loop)	1074	if (!ev_default_loop_ptr)
717	{	1075	{
718	#if EV_MULTIPLICITY	1076	#if EV_MULTIPLICITY
719	struct ev_loop *loop = default_loop = &default_loop_struct;	1077	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
720	#else	1078	#else
721	default_loop = 1;	1079	ev_default_loop_ptr = 1;
722	#endif	1080	#endif
723		1081
724	loop_init (EV_A_ methods);	1082	loop_init (EV_A_ flags);
725		1083
726	if (ev_method (EV_A))	1084	if (ev_backend (EV_A))
727	{	1085	{
728	ev_watcher_init (&sigev, sigcb);
729	ev_set_priority (&sigev, EV_MAXPRI);
730	siginit (EV_A);	1086	siginit (EV_A);
731		1087
732	#ifndef WIN32	1088	#ifndef _WIN32
733	ev_signal_init (&childev, childcb, SIGCHLD);	1089	ev_signal_init (&childev, childcb, SIGCHLD);
734	ev_set_priority (&childev, EV_MAXPRI);	1090	ev_set_priority (&childev, EV_MAXPRI);
735	ev_signal_start (EV_A_ &childev);	1091	ev_signal_start (EV_A_ &childev);
736	ev_unref (EV_A); /* child watcher should not keep loop alive */	1092	ev_unref (EV_A); /* child watcher should not keep loop alive */
737	#endif	1093	#endif
738	}	1094	}
739	else	1095	else
740	default_loop = 0;	1096	ev_default_loop_ptr = 0;
741	}	1097	}
742		1098
743	return default_loop;	1099	return ev_default_loop_ptr;
744	}	1100	}
745		1101
746	void	1102	void
747	ev_default_destroy (void)	1103	ev_default_destroy (void)
748	{	1104	{
749	#if EV_MULTIPLICITY	1105	#if EV_MULTIPLICITY
750	struct ev_loop *loop = default_loop;	1106	struct ev_loop *loop = ev_default_loop_ptr;
751	#endif	1107	#endif
752		1108
		1109	#ifndef _WIN32
753	ev_ref (EV_A); /* child watcher */	1110	ev_ref (EV_A); /* child watcher */
754	ev_signal_stop (EV_A_ &childev);	1111	ev_signal_stop (EV_A_ &childev);
		1112	#endif
755		1113
756	ev_ref (EV_A); /* signal watcher */	1114	ev_ref (EV_A); /* signal watcher */
757	ev_io_stop (EV_A_ &sigev);	1115	ev_io_stop (EV_A_ &sigev);
758		1116
759	close (sigpipe [0]); sigpipe [0] = 0;	1117	close (sigpipe [0]); sigpipe [0] = 0;
…		…
764		1122
765	void	1123	void
766	ev_default_fork (void)	1124	ev_default_fork (void)
767	{	1125	{
768	#if EV_MULTIPLICITY	1126	#if EV_MULTIPLICITY
769	struct ev_loop *loop = default_loop;	1127	struct ev_loop *loop = ev_default_loop_ptr;
770	#endif	1128	#endif
771		1129
772	loop_fork (EV_A);	1130	if (backend)
773		1131	postfork = 1;
774	ev_io_stop (EV_A_ &sigev);
775	close (sigpipe [0]);
776	close (sigpipe [1]);
777	pipe (sigpipe);
778
779	ev_ref (EV_A); /* signal watcher */
780	siginit (EV_A);
781	}	1132	}
782		1133
783	/*****************************************************************************/	1134	/*****************************************************************************/
784		1135
785	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
786	call_pending (EV_P)	1149	call_pending (EV_P)
787	{	1150	{
788	int pri;	1151	int pri;
789		1152
790	for (pri = NUMPRI; pri--; )	1153	for (pri = NUMPRI; pri--; )
791	while (pendingcnt [pri])	1154	while (pendingcnt [pri])
792	{	1155	{
793	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1156	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
794		1157
795	if (p->w)	1158	if (expect_true (p->w))
796	{	1159	{
		1160	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1161
797	p->w->pending = 0;	1162	p->w->pending = 0;
798		1163	EV_CB_INVOKE (p->w, p->events);
799	(*(void (**)(EV_P_ W, int))&p->w->cb) (EV_A_ p->w, p->events);
800	}	1164	}
801	}	1165	}
802	}	1166	}
803		1167
804	static void	1168	void inline_size
805	timers_reify (EV_P)	1169	timers_reify (EV_P)
806	{	1170	{
807	while (timercnt && ((WT)timers [0])->at <= mn_now)	1171	while (timercnt && ((WT)timers [0])->at <= mn_now)
808	{	1172	{
809	struct ev_timer *w = timers [0];	1173	ev_timer *w = timers [0];
810		1174
811	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1175	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
812		1176
813	/* first reschedule or stop timer */	1177	/* first reschedule or stop timer */
814	if (w->repeat)	1178	if (w->repeat)
815	{	1179	{
816	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
817	((WT)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
818	downheap ((WT *)timers, timercnt, 0);	1186	downheap ((WT *)timers, timercnt, 0);
819	}	1187	}
820	else	1188	else
821	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1189	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
822		1190
823	event (EV_A_ (W)w, EV_TIMEOUT);	1191	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
824	}	1192	}
825	}	1193	}
826		1194
827	static void	1195	#if EV_PERIODIC_ENABLE
		1196	void inline_size
828	periodics_reify (EV_P)	1197	periodics_reify (EV_P)
829	{	1198	{
830	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1199	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
831	{	1200	{
832	struct ev_periodic *w = periodics [0];	1201	ev_periodic *w = periodics [0];
833		1202
834	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1203	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
835		1204
836	/* first reschedule or stop timer */	1205	/* first reschedule or stop timer */
837	if (w->interval)	1206	if (w->reschedule_cb)
838	{	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	{
839	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1214	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
840	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1215	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
841	downheap ((WT *)periodics, periodiccnt, 0);	1216	downheap ((WT *)periodics, periodiccnt, 0);
842	}	1217	}
843	else	1218	else
844	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1219	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
845		1220
846	event (EV_A_ (W)w, EV_PERIODIC);	1221	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
847	}	1222	}
848	}	1223	}
849		1224
850	static void	1225	static void noinline
851	periodics_reschedule (EV_P)	1226	periodics_reschedule (EV_P)
852	{	1227	{
853	int i;	1228	int i;
854		1229
855	/* adjust periodics after time jump */	1230	/* adjust periodics after time jump */
856	for (i = 0; i < periodiccnt; ++i)	1231	for (i = 0; i < periodiccnt; ++i)
857	{	1232	{
858	struct ev_periodic *w = periodics [i];	1233	ev_periodic *w = periodics [i];
859		1234
		1235	if (w->reschedule_cb)
		1236	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
860	if (w->interval)	1237	else if (w->interval)
861	{
862	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1238	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
863
864	if (fabs (diff) >= 1e-4)
865	{
866	ev_periodic_stop (EV_A_ w);
867	ev_periodic_start (EV_A_ w);
868
869	i = 0; /* restart loop, inefficient, but time jumps should be rare */
870	}
871	}
872	}	1239	}
873	}
874		1240
875	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
876	time_update_monotonic (EV_P)	1248	time_update_monotonic (EV_P)
877	{	1249	{
878	mn_now = get_clock ();	1250	mn_now = get_clock ();
879		1251
880	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1252	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
881	{	1253	{
882	rt_now = rtmn_diff + mn_now;	1254	ev_rt_now = rtmn_diff + mn_now;
883	return 0;	1255	return 0;
884	}	1256	}
885	else	1257	else
886	{	1258	{
887	now_floor = mn_now;	1259	now_floor = mn_now;
888	rt_now = ev_time ();	1260	ev_rt_now = ev_time ();
889	return 1;	1261	return 1;
890	}	1262	}
891	}	1263	}
892		1264
893	static void	1265	void inline_size
894	time_update (EV_P)	1266	time_update (EV_P)
895	{	1267	{
896	int i;	1268	int i;
897		1269
898	#if EV_USE_MONOTONIC	1270	#if EV_USE_MONOTONIC
…		…
900	{	1272	{
901	if (time_update_monotonic (EV_A))	1273	if (time_update_monotonic (EV_A))
902	{	1274	{
903	ev_tstamp odiff = rtmn_diff;	1275	ev_tstamp odiff = rtmn_diff;
904		1276
905	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; )
906	{	1286	{
907	rtmn_diff = rt_now - mn_now;	1287	rtmn_diff = ev_rt_now - mn_now;
908		1288
909	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1289	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
910	return; /* all is well */	1290	return; /* all is well */
911		1291
912	rt_now = ev_time ();	1292	ev_rt_now = ev_time ();
913	mn_now = get_clock ();	1293	mn_now = get_clock ();
914	now_floor = mn_now;	1294	now_floor = mn_now;
915	}	1295	}
916		1296
		1297	# if EV_PERIODIC_ENABLE
917	periodics_reschedule (EV_A);	1298	periodics_reschedule (EV_A);
		1299	# endif
918	/* no timer adjustment, as the monotonic clock doesn't jump */	1300	/* no timer adjustment, as the monotonic clock doesn't jump */
919	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1301	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
920	}	1302	}
921	}	1303	}
922	else	1304	else
923	#endif	1305	#endif
924	{	1306	{
925	rt_now = ev_time ();	1307	ev_rt_now = ev_time ();
926		1308
927	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))
928	{	1310	{
		1311	#if EV_PERIODIC_ENABLE
929	periodics_reschedule (EV_A);	1312	periodics_reschedule (EV_A);
		1313	#endif
930		1314
931	/* 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 */
932	for (i = 0; i < timercnt; ++i)	1316	for (i = 0; i < timercnt; ++i)
933	((WT)timers [i])->at += rt_now - mn_now;	1317	((WT)timers [i])->at += ev_rt_now - mn_now;
934	}	1318	}
935		1319
936	mn_now = rt_now;	1320	mn_now = ev_rt_now;
937	}	1321	}
938	}	1322	}
939		1323
940	void	1324	void
941	ev_ref (EV_P)	1325	ev_ref (EV_P)
…		…
952	static int loop_done;	1336	static int loop_done;
953		1337
954	void	1338	void
955	ev_loop (EV_P_ int flags)	1339	ev_loop (EV_P_ int flags)
956	{	1340	{
957	double block;
958	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1341	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1342	? EVUNLOOP_ONE
		1343	: EVUNLOOP_CANCEL;
959		1344
960	do	1345	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1346
		1347	while (activecnt)
961	{	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
962	/* queue check watchers (and execute them) */	1368	/* queue check watchers (and execute them) */
963	if (expect_false (preparecnt))	1369	if (expect_false (preparecnt))
964	{	1370	{
965	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1371	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
966	call_pending (EV_A);	1372	call_pending (EV_A);
967	}	1373	}
968		1374
		1375	/* we might have forked, so reify kernel state if necessary */
		1376	if (expect_false (postfork))
		1377	loop_fork (EV_A);
		1378
969	/* update fd-related kernel structures */	1379	/* update fd-related kernel structures */
970	fd_reify (EV_A);	1380	fd_reify (EV_A);
971		1381
972	/* calculate blocking time */	1382	/* calculate blocking time */
		1383	{
		1384	ev_tstamp block;
973		1385
974	/* we only need this for !monotonic clockor timers, but as we basically	1386	if (flags & EVLOOP_NONBLOCK || idlecnt)
975	always have timers, we just calculate it always */	1387	block = 0.; /* do not block at all */
		1388	else
		1389	{
		1390	/* update time to cancel out callback processing overhead */
976	#if EV_USE_MONOTONIC	1391	#if EV_USE_MONOTONIC
977	if (expect_true (have_monotonic))	1392	if (expect_true (have_monotonic))
978	time_update_monotonic (EV_A);	1393	time_update_monotonic (EV_A);
979	else	1394	else
980	#endif	1395	#endif
981	{	1396	{
982	rt_now = ev_time ();	1397	ev_rt_now = ev_time ();
983	mn_now = rt_now;	1398	mn_now = ev_rt_now;
984	}	1399	}
985		1400
986	if (flags & EVLOOP_NONBLOCK || idlecnt)
987	block = 0.;
988	else
989	{
990	block = MAX_BLOCKTIME;	1401	block = MAX_BLOCKTIME;
991		1402
992	if (timercnt)	1403	if (timercnt)
993	{	1404	{
994	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1405	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
995	if (block > to) block = to;	1406	if (block > to) block = to;
996	}	1407	}
997		1408
		1409	#if EV_PERIODIC_ENABLE
998	if (periodiccnt)	1410	if (periodiccnt)
999	{	1411	{
1000	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1412	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1001	if (block > to) block = to;	1413	if (block > to) block = to;
1002	}	1414	}
		1415	#endif
1003		1416
1004	if (block < 0.) block = 0.;	1417	if (expect_false (block < 0.)) block = 0.;
1005	}	1418	}
1006		1419
1007	method_poll (EV_A_ block);	1420	backend_poll (EV_A_ block);
		1421	}
1008		1422
1009	/* update rt_now, do magic */	1423	/* update ev_rt_now, do magic */
1010	time_update (EV_A);	1424	time_update (EV_A);
1011		1425
1012	/* queue pending timers and reschedule them */	1426	/* queue pending timers and reschedule them */
1013	timers_reify (EV_A); /* relative timers called last */	1427	timers_reify (EV_A); /* relative timers called last */
		1428	#if EV_PERIODIC_ENABLE
1014	periodics_reify (EV_A); /* absolute timers called first */	1429	periodics_reify (EV_A); /* absolute timers called first */
		1430	#endif
1015		1431
1016	/* queue idle watchers unless io or timers are pending */	1432	/* queue idle watchers unless other events are pending */
1017	if (!pendingcnt)	1433	if (idlecnt && !any_pending (EV_A))
1018	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1434	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1019		1435
1020	/* queue check watchers, to be executed first */	1436	/* queue check watchers, to be executed first */
1021	if (checkcnt)	1437	if (expect_false (checkcnt))
1022	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1438	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1023		1439
1024	call_pending (EV_A);	1440	call_pending (EV_A);
1025	}
1026	while (activecnt && !loop_done);
1027		1441
1028	if (loop_done != 2)	1442	if (expect_false (loop_done))
1029	loop_done = 0;	1443	break;
		1444	}
		1445
		1446	if (loop_done == EVUNLOOP_ONE)
		1447	loop_done = EVUNLOOP_CANCEL;
1030	}	1448	}
1031		1449
1032	void	1450	void
1033	ev_unloop (EV_P_ int how)	1451	ev_unloop (EV_P_ int how)
1034	{	1452	{
1035	loop_done = how;	1453	loop_done = how;
1036	}	1454	}
1037		1455
1038	/*****************************************************************************/	1456	/*****************************************************************************/
1039		1457
1040	inline void	1458	void inline_size
1041	wlist_add (WL *head, WL elem)	1459	wlist_add (WL *head, WL elem)
1042	{	1460	{
1043	elem->next = *head;	1461	elem->next = *head;
1044	*head = elem;	1462	*head = elem;
1045	}	1463	}
1046		1464
1047	inline void	1465	void inline_size
1048	wlist_del (WL *head, WL elem)	1466	wlist_del (WL *head, WL elem)
1049	{	1467	{
1050	while (*head)	1468	while (*head)
1051	{	1469	{
1052	if (*head == elem)	1470	if (*head == elem)
…		…
1057		1475
1058	head = &(*head)->next;	1476	head = &(*head)->next;
1059	}	1477	}
1060	}	1478	}
1061		1479
1062	inline void	1480	void inline_speed
1063	ev_clear_pending (EV_P_ W w)	1481	ev_clear_pending (EV_P_ W w)
1064	{	1482	{
1065	if (w->pending)	1483	if (w->pending)
1066	{	1484	{
1067	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1485	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1068	w->pending = 0;	1486	w->pending = 0;
1069	}	1487	}
1070	}	1488	}
1071		1489
1072	inline void	1490	void inline_speed
1073	ev_start (EV_P_ W w, int active)	1491	ev_start (EV_P_ W w, int active)
1074	{	1492	{
1075	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1493	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1076	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1494	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1077		1495
1078	w->active = active;	1496	w->active = active;
1079	ev_ref (EV_A);	1497	ev_ref (EV_A);
1080	}	1498	}
1081		1499
1082	inline void	1500	void inline_size
1083	ev_stop (EV_P_ W w)	1501	ev_stop (EV_P_ W w)
1084	{	1502	{
1085	ev_unref (EV_A);	1503	ev_unref (EV_A);
1086	w->active = 0;	1504	w->active = 0;
1087	}	1505	}
1088		1506
1089	/*****************************************************************************/	1507	/*****************************************************************************/
1090		1508
1091	void	1509	void
1092	ev_io_start (EV_P_ struct ev_io *w)	1510	ev_io_start (EV_P_ ev_io *w)
1093	{	1511	{
1094	int fd = w->fd;	1512	int fd = w->fd;
1095		1513
1096	if (ev_is_active (w))	1514	if (expect_false (ev_is_active (w)))
1097	return;	1515	return;
1098		1516
1099	assert (("ev_io_start called with negative fd", fd >= 0));	1517	assert (("ev_io_start called with negative fd", fd >= 0));
1100		1518
1101	ev_start (EV_A_ (W)w, 1);	1519	ev_start (EV_A_ (W)w, 1);
1102	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1520	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1103	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1521	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1104		1522
1105	fd_change (EV_A_ fd);	1523	fd_change (EV_A_ fd);
1106	}	1524	}
1107		1525
1108	void	1526	void
1109	ev_io_stop (EV_P_ struct ev_io *w)	1527	ev_io_stop (EV_P_ ev_io *w)
1110	{	1528	{
1111	ev_clear_pending (EV_A_ (W)w);	1529	ev_clear_pending (EV_A_ (W)w);
1112	if (!ev_is_active (w))	1530	if (expect_false (!ev_is_active (w)))
1113	return;	1531	return;
		1532
		1533	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1114		1534
1115	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1535	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1116	ev_stop (EV_A_ (W)w);	1536	ev_stop (EV_A_ (W)w);
1117		1537
1118	fd_change (EV_A_ w->fd);	1538	fd_change (EV_A_ w->fd);
1119	}	1539	}
1120		1540
1121	void	1541	void
1122	ev_timer_start (EV_P_ struct ev_timer *w)	1542	ev_timer_start (EV_P_ ev_timer *w)
1123	{	1543	{
1124	if (ev_is_active (w))	1544	if (expect_false (ev_is_active (w)))
1125	return;	1545	return;
1126		1546
1127	((WT)w)->at += mn_now;	1547	((WT)w)->at += mn_now;
1128		1548
1129	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1549	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1130		1550
1131	ev_start (EV_A_ (W)w, ++timercnt);	1551	ev_start (EV_A_ (W)w, ++timercnt);
1132	array_needsize (timers, timermax, timercnt, );	1552	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1133	timers [timercnt - 1] = w;	1553	timers [timercnt - 1] = w;
1134	upheap ((WT *)timers, timercnt - 1);	1554	upheap ((WT *)timers, timercnt - 1);
1135		1555
		1556	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1557	}
		1558
		1559	void
		1560	ev_timer_stop (EV_P_ ev_timer *w)
		1561	{
		1562	ev_clear_pending (EV_A_ (W)w);
		1563	if (expect_false (!ev_is_active (w)))
		1564	return;
		1565
1136	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1566	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1137	}
1138		1567
1139	void	1568	{
1140	ev_timer_stop (EV_P_ struct ev_timer *w)	1569	int active = ((W)w)->active;
1141	{
1142	ev_clear_pending (EV_A_ (W)w);
1143	if (!ev_is_active (w))
1144	return;
1145		1570
1146	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1571	if (expect_true (--active < --timercnt))
1147
1148	if (((W)w)->active < timercnt--)
1149	{	1572	{
1150	timers [((W)w)->active - 1] = timers [timercnt];	1573	timers [active] = timers [timercnt];
1151	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1574	adjustheap ((WT *)timers, timercnt, active);
1152	}	1575	}
		1576	}
1153		1577
1154	((WT)w)->at = w->repeat;	1578	((WT)w)->at -= mn_now;
1155		1579
1156	ev_stop (EV_A_ (W)w);	1580	ev_stop (EV_A_ (W)w);
1157	}	1581	}
1158		1582
1159	void	1583	void
1160	ev_timer_again (EV_P_ struct ev_timer *w)	1584	ev_timer_again (EV_P_ ev_timer *w)
1161	{	1585	{
1162	if (ev_is_active (w))	1586	if (ev_is_active (w))
1163	{	1587	{
1164	if (w->repeat)	1588	if (w->repeat)
1165	{	1589	{
1166	((WT)w)->at = mn_now + w->repeat;	1590	((WT)w)->at = mn_now + w->repeat;
1167	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1591	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1168	}	1592	}
1169	else	1593	else
1170	ev_timer_stop (EV_A_ w);	1594	ev_timer_stop (EV_A_ w);
1171	}	1595	}
1172	else if (w->repeat)	1596	else if (w->repeat)
		1597	{
		1598	w->at = w->repeat;
1173	ev_timer_start (EV_A_ w);	1599	ev_timer_start (EV_A_ w);
		1600	}
1174	}	1601	}
1175		1602
		1603	#if EV_PERIODIC_ENABLE
1176	void	1604	void
1177	ev_periodic_start (EV_P_ struct ev_periodic *w)	1605	ev_periodic_start (EV_P_ ev_periodic *w)
1178	{	1606	{
1179	if (ev_is_active (w))	1607	if (expect_false (ev_is_active (w)))
1180	return;	1608	return;
1181		1609
		1610	if (w->reschedule_cb)
		1611	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1612	else if (w->interval)
		1613	{
1182	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1614	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1183
1184	/* this formula differs from the one in periodic_reify because we do not always round up */	1615	/* this formula differs from the one in periodic_reify because we do not always round up */
1185	if (w->interval)
1186	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1616	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1617	}
1187		1618
1188	ev_start (EV_A_ (W)w, ++periodiccnt);	1619	ev_start (EV_A_ (W)w, ++periodiccnt);
1189	array_needsize (periodics, periodicmax, periodiccnt, );	1620	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1190	periodics [periodiccnt - 1] = w;	1621	periodics [periodiccnt - 1] = w;
1191	upheap ((WT *)periodics, periodiccnt - 1);	1622	upheap ((WT *)periodics, periodiccnt - 1);
1192		1623
		1624	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1625	}
		1626
		1627	void
		1628	ev_periodic_stop (EV_P_ ev_periodic *w)
		1629	{
		1630	ev_clear_pending (EV_A_ (W)w);
		1631	if (expect_false (!ev_is_active (w)))
		1632	return;
		1633
1193	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1634	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1194	}
1195		1635
1196	void	1636	{
1197	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1637	int active = ((W)w)->active;
1198	{
1199	ev_clear_pending (EV_A_ (W)w);
1200	if (!ev_is_active (w))
1201	return;
1202		1638
1203	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1639	if (expect_true (--active < --periodiccnt))
1204
1205	if (((W)w)->active < periodiccnt--)
1206	{	1640	{
1207	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1641	periodics [active] = periodics [periodiccnt];
1208	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1642	adjustheap ((WT *)periodics, periodiccnt, active);
1209	}	1643	}
		1644	}
1210		1645
1211	ev_stop (EV_A_ (W)w);	1646	ev_stop (EV_A_ (W)w);
1212	}	1647	}
1213		1648
1214	void	1649	void
1215	ev_idle_start (EV_P_ struct ev_idle *w)	1650	ev_periodic_again (EV_P_ ev_periodic *w)
1216	{	1651	{
1217	if (ev_is_active (w))	1652	/* TODO: use adjustheap and recalculation */
1218	return;
1219
1220	ev_start (EV_A_ (W)w, ++idlecnt);
1221	array_needsize (idles, idlemax, idlecnt, );
1222	idles [idlecnt - 1] = w;
1223	}
1224
1225	void
1226	ev_idle_stop (EV_P_ struct ev_idle *w)
1227	{
1228	ev_clear_pending (EV_A_ (W)w);
1229	if (ev_is_active (w))
1230	return;
1231
1232	idles [((W)w)->active - 1] = idles [--idlecnt];
1233	ev_stop (EV_A_ (W)w);	1653	ev_periodic_stop (EV_A_ w);
		1654	ev_periodic_start (EV_A_ w);
1234	}	1655	}
1235		1656	#endif
1236	void
1237	ev_prepare_start (EV_P_ struct ev_prepare *w)
1238	{
1239	if (ev_is_active (w))
1240	return;
1241
1242	ev_start (EV_A_ (W)w, ++preparecnt);
1243	array_needsize (prepares, preparemax, preparecnt, );
1244	prepares [preparecnt - 1] = w;
1245	}
1246
1247	void
1248	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1249	{
1250	ev_clear_pending (EV_A_ (W)w);
1251	if (ev_is_active (w))
1252	return;
1253
1254	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1255	ev_stop (EV_A_ (W)w);
1256	}
1257
1258	void
1259	ev_check_start (EV_P_ struct ev_check *w)
1260	{
1261	if (ev_is_active (w))
1262	return;
1263
1264	ev_start (EV_A_ (W)w, ++checkcnt);
1265	array_needsize (checks, checkmax, checkcnt, );
1266	checks [checkcnt - 1] = w;
1267	}
1268
1269	void
1270	ev_check_stop (EV_P_ struct ev_check *w)
1271	{
1272	ev_clear_pending (EV_A_ (W)w);
1273	if (ev_is_active (w))
1274	return;
1275
1276	checks [((W)w)->active - 1] = checks [--checkcnt];
1277	ev_stop (EV_A_ (W)w);
1278	}
1279		1657
1280	#ifndef SA_RESTART	1658	#ifndef SA_RESTART
1281	# define SA_RESTART 0	1659	# define SA_RESTART 0
1282	#endif	1660	#endif
1283		1661
1284	void	1662	void
1285	ev_signal_start (EV_P_ struct ev_signal *w)	1663	ev_signal_start (EV_P_ ev_signal *w)
1286	{	1664	{
1287	#if EV_MULTIPLICITY	1665	#if EV_MULTIPLICITY
1288	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1666	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1289	#endif	1667	#endif
1290	if (ev_is_active (w))	1668	if (expect_false (ev_is_active (w)))
1291	return;	1669	return;
1292		1670
1293	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1671	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1294		1672
1295	ev_start (EV_A_ (W)w, 1);	1673	ev_start (EV_A_ (W)w, 1);
1296	array_needsize (signals, signalmax, w->signum, signals_init);	1674	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1297	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1675	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1298		1676
1299	if (!((WL)w)->next)	1677	if (!((WL)w)->next)
1300	{	1678	{
		1679	#if _WIN32
		1680	signal (w->signum, sighandler);
		1681	#else
1301	struct sigaction sa;	1682	struct sigaction sa;
1302	sa.sa_handler = sighandler;	1683	sa.sa_handler = sighandler;
1303	sigfillset (&sa.sa_mask);	1684	sigfillset (&sa.sa_mask);
1304	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1685	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1305	sigaction (w->signum, &sa, 0);	1686	sigaction (w->signum, &sa, 0);
		1687	#endif
1306	}	1688	}
1307	}	1689	}
1308		1690
1309	void	1691	void
1310	ev_signal_stop (EV_P_ struct ev_signal *w)	1692	ev_signal_stop (EV_P_ ev_signal *w)
1311	{	1693	{
1312	ev_clear_pending (EV_A_ (W)w);	1694	ev_clear_pending (EV_A_ (W)w);
1313	if (!ev_is_active (w))	1695	if (expect_false (!ev_is_active (w)))
1314	return;	1696	return;
1315		1697
1316	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1698	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1317	ev_stop (EV_A_ (W)w);	1699	ev_stop (EV_A_ (W)w);
1318		1700
1319	if (!signals [w->signum - 1].head)	1701	if (!signals [w->signum - 1].head)
1320	signal (w->signum, SIG_DFL);	1702	signal (w->signum, SIG_DFL);
1321	}	1703	}
1322		1704
1323	void	1705	void
1324	ev_child_start (EV_P_ struct ev_child *w)	1706	ev_child_start (EV_P_ ev_child *w)
1325	{	1707	{
1326	#if EV_MULTIPLICITY	1708	#if EV_MULTIPLICITY
1327	assert (("child watchers are only supported in the default loop", loop == default_loop));	1709	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1328	#endif	1710	#endif
1329	if (ev_is_active (w))	1711	if (expect_false (ev_is_active (w)))
1330	return;	1712	return;
1331		1713
1332	ev_start (EV_A_ (W)w, 1);	1714	ev_start (EV_A_ (W)w, 1);
1333	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1715	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1334	}	1716	}
1335		1717
1336	void	1718	void
1337	ev_child_stop (EV_P_ struct ev_child *w)	1719	ev_child_stop (EV_P_ ev_child *w)
1338	{	1720	{
1339	ev_clear_pending (EV_A_ (W)w);	1721	ev_clear_pending (EV_A_ (W)w);
1340	if (ev_is_active (w))	1722	if (expect_false (!ev_is_active (w)))
1341	return;	1723	return;
1342		1724
1343	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1725	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1344	ev_stop (EV_A_ (W)w);	1726	ev_stop (EV_A_ (W)w);
1345	}	1727	}
1346		1728
		1729	#if EV_STAT_ENABLE
		1730
		1731	# ifdef _WIN32
		1732	# undef lstat
		1733	# define lstat(a,b) _stati64 (a,b)
		1734	# endif
		1735
		1736	#define DEF_STAT_INTERVAL 5.0074891
		1737	#define MIN_STAT_INTERVAL 0.1074891
		1738
		1739	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1740
		1741	#if EV_USE_INOTIFY
		1742	# define EV_INOTIFY_BUFSIZE 8192
		1743
		1744	static void noinline
		1745	infy_add (EV_P_ ev_stat *w)
		1746	{
		1747	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);
		1748
		1749	if (w->wd < 0)
		1750	{
		1751	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1752
		1753	/* monitor some parent directory for speedup hints */
		1754	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1755	{
		1756	char path [4096];
		1757	strcpy (path, w->path);
		1758
		1759	do
		1760	{
		1761	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1762	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1763
		1764	char *pend = strrchr (path, '/');
		1765
		1766	if (!pend)
		1767	break; /* whoops, no '/', complain to your admin */
		1768
		1769	*pend = 0;
		1770	w->wd = inotify_add_watch (fs_fd, path, mask);
		1771	}
		1772	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1773	}
		1774	}
		1775	else
		1776	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1777
		1778	if (w->wd >= 0)
		1779	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1780	}
		1781
		1782	static void noinline
		1783	infy_del (EV_P_ ev_stat *w)
		1784	{
		1785	int slot;
		1786	int wd = w->wd;
		1787
		1788	if (wd < 0)
		1789	return;
		1790
		1791	w->wd = -2;
		1792	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1793	wlist_del (&fs_hash [slot].head, (WL)w);
		1794
		1795	/* remove this watcher, if others are watching it, they will rearm */
		1796	inotify_rm_watch (fs_fd, wd);
		1797	}
		1798
		1799	static void noinline
		1800	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1801	{
		1802	if (slot < 0)
		1803	/* overflow, need to check for all hahs slots */
		1804	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1805	infy_wd (EV_A_ slot, wd, ev);
		1806	else
		1807	{
		1808	WL w_;
		1809
		1810	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1811	{
		1812	ev_stat *w = (ev_stat *)w_;
		1813	w_ = w_->next; /* lets us remove this watcher and all before it */
		1814
		1815	if (w->wd == wd || wd == -1)
		1816	{
		1817	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1818	{
		1819	w->wd = -1;
		1820	infy_add (EV_A_ w); /* re-add, no matter what */
		1821	}
		1822
		1823	stat_timer_cb (EV_A_ &w->timer, 0);
		1824	}
		1825	}
		1826	}
		1827	}
		1828
		1829	static void
		1830	infy_cb (EV_P_ ev_io *w, int revents)
		1831	{
		1832	char buf [EV_INOTIFY_BUFSIZE];
		1833	struct inotify_event *ev = (struct inotify_event *)buf;
		1834	int ofs;
		1835	int len = read (fs_fd, buf, sizeof (buf));
		1836
		1837	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1838	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1839	}
		1840
		1841	void inline_size
		1842	infy_init (EV_P)
		1843	{
		1844	if (fs_fd != -2)
		1845	return;
		1846
		1847	fs_fd = inotify_init ();
		1848
		1849	if (fs_fd >= 0)
		1850	{
		1851	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1852	ev_set_priority (&fs_w, EV_MAXPRI);
		1853	ev_io_start (EV_A_ &fs_w);
		1854	}
		1855	}
		1856
		1857	void inline_size
		1858	infy_fork (EV_P)
		1859	{
		1860	int slot;
		1861
		1862	if (fs_fd < 0)
		1863	return;
		1864
		1865	close (fs_fd);
		1866	fs_fd = inotify_init ();
		1867
		1868	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1869	{
		1870	WL w_ = fs_hash [slot].head;
		1871	fs_hash [slot].head = 0;
		1872
		1873	while (w_)
		1874	{
		1875	ev_stat *w = (ev_stat *)w_;
		1876	w_ = w_->next; /* lets us add this watcher */
		1877
		1878	w->wd = -1;
		1879
		1880	if (fs_fd >= 0)
		1881	infy_add (EV_A_ w); /* re-add, no matter what */
		1882	else
		1883	ev_timer_start (EV_A_ &w->timer);
		1884	}
		1885
		1886	}
		1887	}
		1888
		1889	#endif
		1890
		1891	void
		1892	ev_stat_stat (EV_P_ ev_stat *w)
		1893	{
		1894	if (lstat (w->path, &w->attr) < 0)
		1895	w->attr.st_nlink = 0;
		1896	else if (!w->attr.st_nlink)
		1897	w->attr.st_nlink = 1;
		1898	}
		1899
		1900	static void noinline
		1901	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1902	{
		1903	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1904
		1905	/* we copy this here each the time so that */
		1906	/* prev has the old value when the callback gets invoked */
		1907	w->prev = w->attr;
		1908	ev_stat_stat (EV_A_ w);
		1909
		1910	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1911	if (
		1912	w->prev.st_dev != w->attr.st_dev
		1913	|| w->prev.st_ino != w->attr.st_ino
		1914	|| w->prev.st_mode != w->attr.st_mode
		1915	|| w->prev.st_nlink != w->attr.st_nlink
		1916	|| w->prev.st_uid != w->attr.st_uid
		1917	|| w->prev.st_gid != w->attr.st_gid
		1918	|| w->prev.st_rdev != w->attr.st_rdev
		1919	|| w->prev.st_size != w->attr.st_size
		1920	|| w->prev.st_atime != w->attr.st_atime
		1921	|| w->prev.st_mtime != w->attr.st_mtime
		1922	|| w->prev.st_ctime != w->attr.st_ctime
		1923	) {
		1924	#if EV_USE_INOTIFY
		1925	infy_del (EV_A_ w);
		1926	infy_add (EV_A_ w);
		1927	ev_stat_stat (EV_A_ w); /* avoid race... */
		1928	#endif
		1929
		1930	ev_feed_event (EV_A_ w, EV_STAT);
		1931	}
		1932	}
		1933
		1934	void
		1935	ev_stat_start (EV_P_ ev_stat *w)
		1936	{
		1937	if (expect_false (ev_is_active (w)))
		1938	return;
		1939
		1940	/* since we use memcmp, we need to clear any padding data etc. */
		1941	memset (&w->prev, 0, sizeof (ev_statdata));
		1942	memset (&w->attr, 0, sizeof (ev_statdata));
		1943
		1944	ev_stat_stat (EV_A_ w);
		1945
		1946	if (w->interval < MIN_STAT_INTERVAL)
		1947	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1948
		1949	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1950	ev_set_priority (&w->timer, ev_priority (w));
		1951
		1952	#if EV_USE_INOTIFY
		1953	infy_init (EV_A);
		1954
		1955	if (fs_fd >= 0)
		1956	infy_add (EV_A_ w);
		1957	else
		1958	#endif
		1959	ev_timer_start (EV_A_ &w->timer);
		1960
		1961	ev_start (EV_A_ (W)w, 1);
		1962	}
		1963
		1964	void
		1965	ev_stat_stop (EV_P_ ev_stat *w)
		1966	{
		1967	ev_clear_pending (EV_A_ (W)w);
		1968	if (expect_false (!ev_is_active (w)))
		1969	return;
		1970
		1971	#if EV_USE_INOTIFY
		1972	infy_del (EV_A_ w);
		1973	#endif
		1974	ev_timer_stop (EV_A_ &w->timer);
		1975
		1976	ev_stop (EV_A_ (W)w);
		1977	}
		1978	#endif
		1979
		1980	void
		1981	ev_idle_start (EV_P_ ev_idle *w)
		1982	{
		1983	if (expect_false (ev_is_active (w)))
		1984	return;
		1985
		1986	ev_start (EV_A_ (W)w, ++idlecnt);
		1987	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1988	idles [idlecnt - 1] = w;
		1989	}
		1990
		1991	void
		1992	ev_idle_stop (EV_P_ ev_idle *w)
		1993	{
		1994	ev_clear_pending (EV_A_ (W)w);
		1995	if (expect_false (!ev_is_active (w)))
		1996	return;
		1997
		1998	{
		1999	int active = ((W)w)->active;
		2000	idles [active - 1] = idles [--idlecnt];
		2001	((W)idles [active - 1])->active = active;
		2002	}
		2003
		2004	ev_stop (EV_A_ (W)w);
		2005	}
		2006
		2007	void
		2008	ev_prepare_start (EV_P_ ev_prepare *w)
		2009	{
		2010	if (expect_false (ev_is_active (w)))
		2011	return;
		2012
		2013	ev_start (EV_A_ (W)w, ++preparecnt);
		2014	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2015	prepares [preparecnt - 1] = w;
		2016	}
		2017
		2018	void
		2019	ev_prepare_stop (EV_P_ ev_prepare *w)
		2020	{
		2021	ev_clear_pending (EV_A_ (W)w);
		2022	if (expect_false (!ev_is_active (w)))
		2023	return;
		2024
		2025	{
		2026	int active = ((W)w)->active;
		2027	prepares [active - 1] = prepares [--preparecnt];
		2028	((W)prepares [active - 1])->active = active;
		2029	}
		2030
		2031	ev_stop (EV_A_ (W)w);
		2032	}
		2033
		2034	void
		2035	ev_check_start (EV_P_ ev_check *w)
		2036	{
		2037	if (expect_false (ev_is_active (w)))
		2038	return;
		2039
		2040	ev_start (EV_A_ (W)w, ++checkcnt);
		2041	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2042	checks [checkcnt - 1] = w;
		2043	}
		2044
		2045	void
		2046	ev_check_stop (EV_P_ ev_check *w)
		2047	{
		2048	ev_clear_pending (EV_A_ (W)w);
		2049	if (expect_false (!ev_is_active (w)))
		2050	return;
		2051
		2052	{
		2053	int active = ((W)w)->active;
		2054	checks [active - 1] = checks [--checkcnt];
		2055	((W)checks [active - 1])->active = active;
		2056	}
		2057
		2058	ev_stop (EV_A_ (W)w);
		2059	}
		2060
		2061	#if EV_EMBED_ENABLE
		2062	void noinline
		2063	ev_embed_sweep (EV_P_ ev_embed *w)
		2064	{
		2065	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2066	}
		2067
		2068	static void
		2069	embed_cb (EV_P_ ev_io *io, int revents)
		2070	{
		2071	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2072
		2073	if (ev_cb (w))
		2074	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2075	else
		2076	ev_embed_sweep (loop, w);
		2077	}
		2078
		2079	void
		2080	ev_embed_start (EV_P_ ev_embed *w)
		2081	{
		2082	if (expect_false (ev_is_active (w)))
		2083	return;
		2084
		2085	{
		2086	struct ev_loop *loop = w->loop;
		2087	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2088	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2089	}
		2090
		2091	ev_set_priority (&w->io, ev_priority (w));
		2092	ev_io_start (EV_A_ &w->io);
		2093
		2094	ev_start (EV_A_ (W)w, 1);
		2095	}
		2096
		2097	void
		2098	ev_embed_stop (EV_P_ ev_embed *w)
		2099	{
		2100	ev_clear_pending (EV_A_ (W)w);
		2101	if (expect_false (!ev_is_active (w)))
		2102	return;
		2103
		2104	ev_io_stop (EV_A_ &w->io);
		2105
		2106	ev_stop (EV_A_ (W)w);
		2107	}
		2108	#endif
		2109
		2110	#if EV_FORK_ENABLE
		2111	void
		2112	ev_fork_start (EV_P_ ev_fork *w)
		2113	{
		2114	if (expect_false (ev_is_active (w)))
		2115	return;
		2116
		2117	ev_start (EV_A_ (W)w, ++forkcnt);
		2118	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2119	forks [forkcnt - 1] = w;
		2120	}
		2121
		2122	void
		2123	ev_fork_stop (EV_P_ ev_fork *w)
		2124	{
		2125	ev_clear_pending (EV_A_ (W)w);
		2126	if (expect_false (!ev_is_active (w)))
		2127	return;
		2128
		2129	{
		2130	int active = ((W)w)->active;
		2131	forks [active - 1] = forks [--forkcnt];
		2132	((W)forks [active - 1])->active = active;
		2133	}
		2134
		2135	ev_stop (EV_A_ (W)w);
		2136	}
		2137	#endif
		2138
1347	/*****************************************************************************/	2139	/*****************************************************************************/
1348		2140
1349	struct ev_once	2141	struct ev_once
1350	{	2142	{
1351	struct ev_io io;	2143	ev_io io;
1352	struct ev_timer to;	2144	ev_timer to;
1353	void (*cb)(int revents, void *arg);	2145	void (*cb)(int revents, void *arg);
1354	void *arg;	2146	void *arg;
1355	};	2147	};
1356		2148
1357	static void	2149	static void
…		…
1360	void (*cb)(int revents, void *arg) = once->cb;	2152	void (*cb)(int revents, void *arg) = once->cb;
1361	void *arg = once->arg;	2153	void *arg = once->arg;
1362		2154
1363	ev_io_stop (EV_A_ &once->io);	2155	ev_io_stop (EV_A_ &once->io);
1364	ev_timer_stop (EV_A_ &once->to);	2156	ev_timer_stop (EV_A_ &once->to);
1365	free (once);	2157	ev_free (once);
1366		2158
1367	cb (revents, arg);	2159	cb (revents, arg);
1368	}	2160	}
1369		2161
1370	static void	2162	static void
1371	once_cb_io (EV_P_ struct ev_io *w, int revents)	2163	once_cb_io (EV_P_ ev_io *w, int revents)
1372	{	2164	{
1373	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2165	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1374	}	2166	}
1375		2167
1376	static void	2168	static void
1377	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2169	once_cb_to (EV_P_ ev_timer *w, int revents)
1378	{	2170	{
1379	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2171	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1380	}	2172	}
1381		2173
1382	void	2174	void
1383	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2175	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1384	{	2176	{
1385	struct ev_once *once = malloc (sizeof (struct ev_once));	2177	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1386		2178
1387	if (!once)	2179	if (expect_false (!once))
		2180	{
1388	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2181	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1389	else	2182	return;
1390	{	2183	}
		2184
1391	once->cb = cb;	2185	once->cb = cb;
1392	once->arg = arg;	2186	once->arg = arg;
1393		2187
1394	ev_watcher_init (&once->io, once_cb_io);	2188	ev_init (&once->io, once_cb_io);
1395	if (fd >= 0)	2189	if (fd >= 0)
1396	{	2190	{
1397	ev_io_set (&once->io, fd, events);	2191	ev_io_set (&once->io, fd, events);
1398	ev_io_start (EV_A_ &once->io);	2192	ev_io_start (EV_A_ &once->io);
1399	}	2193	}
1400		2194
1401	ev_watcher_init (&once->to, once_cb_to);	2195	ev_init (&once->to, once_cb_to);
1402	if (timeout >= 0.)	2196	if (timeout >= 0.)
1403	{	2197	{
1404	ev_timer_set (&once->to, timeout, 0.);	2198	ev_timer_set (&once->to, timeout, 0.);
1405	ev_timer_start (EV_A_ &once->to);	2199	ev_timer_start (EV_A_ &once->to);
1406	}
1407	}	2200	}
1408	}	2201	}
1409		2202
		2203	#ifdef __cplusplus
		2204	}
		2205	#endif
		2206

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