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Comparing libev/ev.c (file contents):
Revision 1.60 by root, Sun Nov 4 18:29:44 2007 UTC vs.
Revision 1.162 by root, Mon Dec 3 13:41:24 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# include "config.h"	40	# include "config.h"
		41	# endif
33		42
34	# if HAVE_CLOCK_GETTIME	43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
37	# endif	57	# endif
38		58
		59	# ifndef EV_USE_SELECT
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
40	# define EV_USE_SELECT 1	61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
41	# endif	65	# endif
42		66
		67	# ifndef EV_USE_POLL
43	# if HAVE_POLL && HAVE_POLL_H	68	# if HAVE_POLL && HAVE_POLL_H
44	# define EV_USE_POLL 1	69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
45	# endif	73	# endif
46		74
		75	# ifndef EV_USE_EPOLL
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
48	# define EV_USE_EPOLL 1	77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
49	# endif	81	# endif
50		82
		83	# ifndef EV_USE_KQUEUE
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
52	# define EV_USE_KQUEUE 1	85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
		97	# endif
		98
		99	# ifndef EV_USE_INOTIFY
		100	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		101	# define EV_USE_INOTIFY 1
		102	# else
		103	# define EV_USE_INOTIFY 0
		104	# endif
53	# endif	105	# endif
54		106
55	#endif	107	#endif
56		108
57	#include <math.h>	109	#include <math.h>
58	#include <stdlib.h>	110	#include <stdlib.h>
59	#include <unistd.h>
60	#include <fcntl.h>	111	#include <fcntl.h>
61	#include <signal.h>
62	#include <stddef.h>	112	#include <stddef.h>
63		113
64	#include <stdio.h>	114	#include <stdio.h>
65		115
66	#include <assert.h>	116	#include <assert.h>
67	#include <errno.h>	117	#include <errno.h>
68	#include <sys/types.h>	118	#include <sys/types.h>
		119	#include <time.h>
		120
		121	#include <signal.h>
		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
69	#ifndef WIN32	129	#ifndef _WIN32
		130	# include <sys/time.h>
70	# include <sys/wait.h>	131	# include <sys/wait.h>
		132	# include <unistd.h>
		133	#else
		134	# define WIN32_LEAN_AND_MEAN
		135	# include <windows.h>
		136	# ifndef EV_SELECT_IS_WINSOCKET
		137	# define EV_SELECT_IS_WINSOCKET 1
71	#endif	138	# endif
72	#include <sys/time.h>	139	#endif
73	#include <time.h>
74		140
75	/**/	141	/**/
76		142
77	#ifndef EV_USE_MONOTONIC	143	#ifndef EV_USE_MONOTONIC
78	# define EV_USE_MONOTONIC 1	144	# define EV_USE_MONOTONIC 0
		145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
79	#endif	149	#endif
80		150
81	#ifndef EV_USE_SELECT	151	#ifndef EV_USE_SELECT
82	# define EV_USE_SELECT 1	152	# define EV_USE_SELECT 1
83	#endif	153	#endif
84		154
85	#ifndef EV_USE_POLL	155	#ifndef EV_USE_POLL
86	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	156	# ifdef _WIN32
		157	# define EV_USE_POLL 0
		158	# else
		159	# define EV_USE_POLL 1
		160	# endif
87	#endif	161	#endif
88		162
89	#ifndef EV_USE_EPOLL	163	#ifndef EV_USE_EPOLL
90	# define EV_USE_EPOLL 0	164	# define EV_USE_EPOLL 0
91	#endif	165	#endif
92		166
93	#ifndef EV_USE_KQUEUE	167	#ifndef EV_USE_KQUEUE
94	# define EV_USE_KQUEUE 0	168	# define EV_USE_KQUEUE 0
95	#endif	169	#endif
96		170
97	#ifndef EV_USE_REALTIME	171	#ifndef EV_USE_PORT
98	# define EV_USE_REALTIME 1	172	# define EV_USE_PORT 0
		173	#endif
		174
		175	#ifndef EV_USE_INOTIFY
		176	# define EV_USE_INOTIFY 0
		177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
		182	# else
		183	# define EV_PID_HASHSIZE 16
		184	# endif
		185	#endif
		186
		187	#ifndef EV_INOTIFY_HASHSIZE
		188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
99	#endif	193	#endif
100		194
101	/**/	195	/**/
102		196
103	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
…		…
108	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
109	# undef EV_USE_REALTIME	203	# undef EV_USE_REALTIME
110	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
111	#endif	205	#endif
112		206
		207	#if EV_SELECT_IS_WINSOCKET
		208	# include <winsock.h>
		209	#endif
		210
		211	#if !EV_STAT_ENABLE
		212	# define EV_USE_INOTIFY 0
		213	#endif
		214
		215	#if EV_USE_INOTIFY
		216	# include <sys/inotify.h>
		217	#endif
		218
113	/**/	219	/**/
114		220
115	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	221	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
116	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	222	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
117	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
118	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	223	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
119
120	#include "ev.h"
121		224
122	#if __GNUC__ >= 3	225	#if __GNUC__ >= 3
123	# define expect(expr,value) __builtin_expect ((expr),(value))	226	# define expect(expr,value) __builtin_expect ((expr),(value))
		227	# define inline_size static inline /* inline for codesize */
		228	# if EV_MINIMAL
124	# define inline inline	229	# define noinline __attribute__ ((noinline))
		230	# define inline_speed static noinline
		231	# else
		232	# define noinline
		233	# define inline_speed static inline
		234	# endif
125	#else	235	#else
126	# define expect(expr,value) (expr)	236	# define expect(expr,value) (expr)
		237	# define inline_speed static
127	# define inline static	238	# define inline_size static
		239	# define noinline
128	#endif	240	#endif
129		241
130	#define expect_false(expr) expect ((expr) != 0, 0)	242	#define expect_false(expr) expect ((expr) != 0, 0)
131	#define expect_true(expr) expect ((expr) != 0, 1)	243	#define expect_true(expr) expect ((expr) != 0, 1)
132		244
133	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
134	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	246	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
135		247
		248	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		249	#define EMPTY2(a,b) /* used to suppress some warnings */
		250
136	typedef struct ev_watcher *W;	251	typedef ev_watcher *W;
137	typedef struct ev_watcher_list *WL;	252	typedef ev_watcher_list *WL;
138	typedef struct ev_watcher_time *WT;	253	typedef ev_watcher_time *WT;
139		254
140	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
141		256
		257	#ifdef _WIN32
		258	# include "ev_win32.c"
		259	#endif
		260
142	/*****************************************************************************/	261	/*****************************************************************************/
143		262
		263	static void (*syserr_cb)(const char *msg);
		264
		265	void
		266	ev_set_syserr_cb (void (*cb)(const char *msg))
		267	{
		268	syserr_cb = cb;
		269	}
		270
		271	static void noinline
		272	syserr (const char *msg)
		273	{
		274	if (!msg)
		275	msg = "(libev) system error";
		276
		277	if (syserr_cb)
		278	syserr_cb (msg);
		279	else
		280	{
		281	perror (msg);
		282	abort ();
		283	}
		284	}
		285
		286	static void *(*alloc)(void *ptr, long size);
		287
		288	void
		289	ev_set_allocator (void *(*cb)(void *ptr, long size))
		290	{
		291	alloc = cb;
		292	}
		293
		294	inline_speed void *
		295	ev_realloc (void *ptr, long size)
		296	{
		297	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		298
		299	if (!ptr && size)
		300	{
		301	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		302	abort ();
		303	}
		304
		305	return ptr;
		306	}
		307
		308	#define ev_malloc(size) ev_realloc (0, (size))
		309	#define ev_free(ptr) ev_realloc ((ptr), 0)
		310
		311	/*****************************************************************************/
		312
144	typedef struct	313	typedef struct
145	{	314	{
146	struct ev_watcher_list *head;	315	WL head;
147	unsigned char events;	316	unsigned char events;
148	unsigned char reify;	317	unsigned char reify;
		318	#if EV_SELECT_IS_WINSOCKET
		319	SOCKET handle;
		320	#endif
149	} ANFD;	321	} ANFD;
150		322
151	typedef struct	323	typedef struct
152	{	324	{
153	W w;	325	W w;
154	int events;	326	int events;
155	} ANPENDING;	327	} ANPENDING;
156		328
		329	#if EV_USE_INOTIFY
		330	typedef struct
		331	{
		332	WL head;
		333	} ANFS;
		334	#endif
		335
157	#if EV_MULTIPLICITY	336	#if EV_MULTIPLICITY
158		337
159	struct ev_loop	338	struct ev_loop
160	{	339	{
		340	ev_tstamp ev_rt_now;
		341	#define ev_rt_now ((loop)->ev_rt_now)
161	# define VAR(name,decl) decl;	342	#define VAR(name,decl) decl;
162	# include "ev_vars.h"	343	#include "ev_vars.h"
163	};
164	# undef VAR	344	#undef VAR
		345	};
165	# include "ev_wrap.h"	346	#include "ev_wrap.h"
		347
		348	static struct ev_loop default_loop_struct;
		349	struct ev_loop *ev_default_loop_ptr;
166		350
167	#else	351	#else
168		352
		353	ev_tstamp ev_rt_now;
169	# define VAR(name,decl) static decl;	354	#define VAR(name,decl) static decl;
170	# include "ev_vars.h"	355	#include "ev_vars.h"
171	# undef VAR	356	#undef VAR
		357
		358	static int ev_default_loop_ptr;
172		359
173	#endif	360	#endif
174		361
175	/*****************************************************************************/	362	/*****************************************************************************/
176		363
177	inline ev_tstamp	364	ev_tstamp
178	ev_time (void)	365	ev_time (void)
179	{	366	{
180	#if EV_USE_REALTIME	367	#if EV_USE_REALTIME
181	struct timespec ts;	368	struct timespec ts;
182	clock_gettime (CLOCK_REALTIME, &ts);	369	clock_gettime (CLOCK_REALTIME, &ts);
…		…
186	gettimeofday (&tv, 0);	373	gettimeofday (&tv, 0);
187	return tv.tv_sec + tv.tv_usec * 1e-6;	374	return tv.tv_sec + tv.tv_usec * 1e-6;
188	#endif	375	#endif
189	}	376	}
190		377
191	inline ev_tstamp	378	ev_tstamp inline_size
192	get_clock (void)	379	get_clock (void)
193	{	380	{
194	#if EV_USE_MONOTONIC	381	#if EV_USE_MONOTONIC
195	if (expect_true (have_monotonic))	382	if (expect_true (have_monotonic))
196	{	383	{
…		…
201	#endif	388	#endif
202		389
203	return ev_time ();	390	return ev_time ();
204	}	391	}
205		392
		393	#if EV_MULTIPLICITY
206	ev_tstamp	394	ev_tstamp
207	ev_now (EV_P)	395	ev_now (EV_P)
208	{	396	{
209	return rt_now;	397	return ev_rt_now;
210	}	398	}
		399	#endif
211		400
212	#define array_roundsize(base,n) ((n) | 4 & ~3)	401	#define array_roundsize(type,n) (((n) | 4) & ~3)
213		402
214	#define array_needsize(base,cur,cnt,init) \	403	#define array_needsize(type,base,cur,cnt,init) \
215	if (expect_false ((cnt) > cur)) \	404	if (expect_false ((cnt) > cur)) \
216	{ \	405	{ \
217	int newcnt = cur; \	406	int newcnt = cur; \
218	do \	407	do \
219	{ \	408	{ \
220	newcnt = array_roundsize (base, newcnt << 1); \	409	newcnt = array_roundsize (type, newcnt << 1); \
221	} \	410	} \
222	while ((cnt) > newcnt); \	411	while ((cnt) > newcnt); \
223	\	412	\
224	base = realloc (base, sizeof (*base) * (newcnt)); \	413	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
225	init (base + cur, newcnt - cur); \	414	init (base + cur, newcnt - cur); \
226	cur = newcnt; \	415	cur = newcnt; \
227	}	416	}
		417
		418	#define array_slim(type,stem) \
		419	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		420	{ \
		421	stem ## max = array_roundsize (stem ## cnt >> 1); \
		422	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		423	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		424	}
		425
		426	#define array_free(stem, idx) \
		427	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
228		428
229	/*****************************************************************************/	429	/*****************************************************************************/
230		430
231	static void	431	void noinline
		432	ev_feed_event (EV_P_ void *w, int revents)
		433	{
		434	W w_ = (W)w;
		435
		436	if (expect_false (w_->pending))
		437	{
		438	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		439	return;
		440	}
		441
		442	w_->pending = ++pendingcnt [ABSPRI (w_)];
		443	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		444	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		445	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		446	}
		447
		448	void inline_size
		449	queue_events (EV_P_ W *events, int eventcnt, int type)
		450	{
		451	int i;
		452
		453	for (i = 0; i < eventcnt; ++i)
		454	ev_feed_event (EV_A_ events [i], type);
		455	}
		456
		457	/*****************************************************************************/
		458
		459	void inline_size
232	anfds_init (ANFD *base, int count)	460	anfds_init (ANFD *base, int count)
233	{	461	{
234	while (count--)	462	while (count--)
235	{	463	{
236	base->head = 0;	464	base->head = 0;
…		…
239		467
240	++base;	468	++base;
241	}	469	}
242	}	470	}
243		471
244	static void	472	void inline_speed
245	event (EV_P_ W w, int events)
246	{
247	if (w->pending)
248	{
249	pendings [ABSPRI (w)][w->pending - 1].events |= events;
250	return;
251	}
252
253	w->pending = ++pendingcnt [ABSPRI (w)];
254	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
255	pendings [ABSPRI (w)][w->pending - 1].w = w;
256	pendings [ABSPRI (w)][w->pending - 1].events = events;
257	}
258
259	static void
260	queue_events (EV_P_ W *events, int eventcnt, int type)
261	{
262	int i;
263
264	for (i = 0; i < eventcnt; ++i)
265	event (EV_A_ events [i], type);
266	}
267
268	static void
269	fd_event (EV_P_ int fd, int events)	473	fd_event (EV_P_ int fd, int revents)
270	{	474	{
271	ANFD *anfd = anfds + fd;	475	ANFD *anfd = anfds + fd;
272	struct ev_io *w;	476	ev_io *w;
273		477
274	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	478	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
275	{	479	{
276	int ev = w->events & events;	480	int ev = w->events & revents;
277		481
278	if (ev)	482	if (ev)
279	event (EV_A_ (W)w, ev);	483	ev_feed_event (EV_A_ (W)w, ev);
280	}	484	}
281	}	485	}
282		486
283	/*****************************************************************************/	487	void
		488	ev_feed_fd_event (EV_P_ int fd, int revents)
		489	{
		490	fd_event (EV_A_ fd, revents);
		491	}
284		492
285	static void	493	void inline_size
286	fd_reify (EV_P)	494	fd_reify (EV_P)
287	{	495	{
288	int i;	496	int i;
289		497
290	for (i = 0; i < fdchangecnt; ++i)	498	for (i = 0; i < fdchangecnt; ++i)
291	{	499	{
292	int fd = fdchanges [i];	500	int fd = fdchanges [i];
293	ANFD *anfd = anfds + fd;	501	ANFD *anfd = anfds + fd;
294	struct ev_io *w;	502	ev_io *w;
295		503
296	int events = 0;	504	int events = 0;
297		505
298	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	506	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
299	events |= w->events;	507	events |= w->events;
300		508
		509	#if EV_SELECT_IS_WINSOCKET
		510	if (events)
		511	{
		512	unsigned long argp;
		513	anfd->handle = _get_osfhandle (fd);
		514	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		515	}
		516	#endif
		517
301	anfd->reify = 0;	518	anfd->reify = 0;
302		519
303	if (anfd->events != events)
304	{
305	method_modify (EV_A_ fd, anfd->events, events);	520	backend_modify (EV_A_ fd, anfd->events, events);
306	anfd->events = events;	521	anfd->events = events;
307	}
308	}	522	}
309		523
310	fdchangecnt = 0;	524	fdchangecnt = 0;
311	}	525	}
312		526
313	static void	527	void inline_size
314	fd_change (EV_P_ int fd)	528	fd_change (EV_P_ int fd)
315	{	529	{
316	if (anfds [fd].reify || fdchangecnt < 0)	530	if (expect_false (anfds [fd].reify))
317	return;	531	return;
318		532
319	anfds [fd].reify = 1;	533	anfds [fd].reify = 1;
320		534
321	++fdchangecnt;	535	++fdchangecnt;
322	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	536	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
323	fdchanges [fdchangecnt - 1] = fd;	537	fdchanges [fdchangecnt - 1] = fd;
324	}	538	}
325		539
326	static void	540	void inline_speed
327	fd_kill (EV_P_ int fd)	541	fd_kill (EV_P_ int fd)
328	{	542	{
329	struct ev_io *w;	543	ev_io *w;
330		544
331	while ((w = (struct ev_io *)anfds [fd].head))	545	while ((w = (ev_io *)anfds [fd].head))
332	{	546	{
333	ev_io_stop (EV_A_ w);	547	ev_io_stop (EV_A_ w);
334	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	548	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
335	}	549	}
		550	}
		551
		552	int inline_size
		553	fd_valid (int fd)
		554	{
		555	#ifdef _WIN32
		556	return _get_osfhandle (fd) != -1;
		557	#else
		558	return fcntl (fd, F_GETFD) != -1;
		559	#endif
336	}	560	}
337		561
338	/* called on EBADF to verify fds */	562	/* called on EBADF to verify fds */
339	static void	563	static void noinline
340	fd_ebadf (EV_P)	564	fd_ebadf (EV_P)
341	{	565	{
342	int fd;	566	int fd;
343		567
344	for (fd = 0; fd < anfdmax; ++fd)	568	for (fd = 0; fd < anfdmax; ++fd)
345	if (anfds [fd].events)	569	if (anfds [fd].events)
346	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	570	if (!fd_valid (fd) == -1 && errno == EBADF)
347	fd_kill (EV_A_ fd);	571	fd_kill (EV_A_ fd);
348	}	572	}
349		573
350	/* called on ENOMEM in select/poll to kill some fds and retry */	574	/* called on ENOMEM in select/poll to kill some fds and retry */
351	static void	575	static void noinline
352	fd_enomem (EV_P)	576	fd_enomem (EV_P)
353	{	577	{
354	int fd = anfdmax;	578	int fd;
355		579
356	while (fd--)	580	for (fd = anfdmax; fd--; )
357	if (anfds [fd].events)	581	if (anfds [fd].events)
358	{	582	{
359	close (fd);
360	fd_kill (EV_A_ fd);	583	fd_kill (EV_A_ fd);
361	return;	584	return;
362	}	585	}
363	}	586	}
364		587
365	/* susually called after fork if method needs to re-arm all fds from scratch */	588	/* usually called after fork if backend needs to re-arm all fds from scratch */
366	static void	589	static void noinline
367	fd_rearm_all (EV_P)	590	fd_rearm_all (EV_P)
368	{	591	{
369	int fd;	592	int fd;
370		593
371	/* this should be highly optimised to not do anything but set a flag */
372	for (fd = 0; fd < anfdmax; ++fd)	594	for (fd = 0; fd < anfdmax; ++fd)
373	if (anfds [fd].events)	595	if (anfds [fd].events)
374	{	596	{
375	anfds [fd].events = 0;	597	anfds [fd].events = 0;
376	fd_change (EV_A_ fd);	598	fd_change (EV_A_ fd);
377	}	599	}
378	}	600	}
379		601
380	/*****************************************************************************/	602	/*****************************************************************************/
381		603
382	static void	604	void inline_speed
383	upheap (WT *heap, int k)	605	upheap (WT *heap, int k)
384	{	606	{
385	WT w = heap [k];	607	WT w = heap [k];
386		608
387	while (k && heap [k >> 1]->at > w->at)	609	while (k && heap [k >> 1]->at > w->at)
388	{	610	{
389	heap [k] = heap [k >> 1];	611	heap [k] = heap [k >> 1];
390	heap [k]->active = k + 1;	612	((W)heap [k])->active = k + 1;
391	k >>= 1;	613	k >>= 1;
392	}	614	}
393		615
394	heap [k] = w;	616	heap [k] = w;
395	heap [k]->active = k + 1;	617	((W)heap [k])->active = k + 1;
396		618
397	}	619	}
398		620
399	static void	621	void inline_speed
400	downheap (WT *heap, int N, int k)	622	downheap (WT *heap, int N, int k)
401	{	623	{
402	WT w = heap [k];	624	WT w = heap [k];
403		625
404	while (k < (N >> 1))	626	while (k < (N >> 1))
…		…
410		632
411	if (w->at <= heap [j]->at)	633	if (w->at <= heap [j]->at)
412	break;	634	break;
413		635
414	heap [k] = heap [j];	636	heap [k] = heap [j];
415	heap [k]->active = k + 1;	637	((W)heap [k])->active = k + 1;
416	k = j;	638	k = j;
417	}	639	}
418		640
419	heap [k] = w;	641	heap [k] = w;
420	heap [k]->active = k + 1;	642	((W)heap [k])->active = k + 1;
		643	}
		644
		645	void inline_size
		646	adjustheap (WT *heap, int N, int k)
		647	{
		648	upheap (heap, k);
		649	downheap (heap, N, k);
421	}	650	}
422		651
423	/*****************************************************************************/	652	/*****************************************************************************/
424		653
425	typedef struct	654	typedef struct
426	{	655	{
427	struct ev_watcher_list *head;	656	WL head;
428	sig_atomic_t volatile gotsig;	657	sig_atomic_t volatile gotsig;
429	} ANSIG;	658	} ANSIG;
430		659
431	static ANSIG *signals;	660	static ANSIG *signals;
432	static int signalmax;	661	static int signalmax;
433		662
434	static int sigpipe [2];	663	static int sigpipe [2];
435	static sig_atomic_t volatile gotsig;	664	static sig_atomic_t volatile gotsig;
436	static struct ev_io sigev;	665	static ev_io sigev;
437		666
438	static void	667	void inline_size
439	signals_init (ANSIG *base, int count)	668	signals_init (ANSIG *base, int count)
440	{	669	{
441	while (count--)	670	while (count--)
442	{	671	{
443	base->head = 0;	672	base->head = 0;
…		…
448	}	677	}
449		678
450	static void	679	static void
451	sighandler (int signum)	680	sighandler (int signum)
452	{	681	{
		682	#if _WIN32
		683	signal (signum, sighandler);
		684	#endif
		685
453	signals [signum - 1].gotsig = 1;	686	signals [signum - 1].gotsig = 1;
454		687
455	if (!gotsig)	688	if (!gotsig)
456	{	689	{
457	int old_errno = errno;	690	int old_errno = errno;
…		…
459	write (sigpipe [1], &signum, 1);	692	write (sigpipe [1], &signum, 1);
460	errno = old_errno;	693	errno = old_errno;
461	}	694	}
462	}	695	}
463		696
		697	void noinline
		698	ev_feed_signal_event (EV_P_ int signum)
		699	{
		700	WL w;
		701
		702	#if EV_MULTIPLICITY
		703	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		704	#endif
		705
		706	--signum;
		707
		708	if (signum < 0 || signum >= signalmax)
		709	return;
		710
		711	signals [signum].gotsig = 0;
		712
		713	for (w = signals [signum].head; w; w = w->next)
		714	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		715	}
		716
464	static void	717	static void
465	sigcb (EV_P_ struct ev_io *iow, int revents)	718	sigcb (EV_P_ ev_io *iow, int revents)
466	{	719	{
467	struct ev_watcher_list *w;
468	int signum;	720	int signum;
469		721
470	read (sigpipe [0], &revents, 1);	722	read (sigpipe [0], &revents, 1);
471	gotsig = 0;	723	gotsig = 0;
472		724
473	for (signum = signalmax; signum--; )	725	for (signum = signalmax; signum--; )
474	if (signals [signum].gotsig)	726	if (signals [signum].gotsig)
475	{	727	ev_feed_signal_event (EV_A_ signum + 1);
476	signals [signum].gotsig = 0;
477
478	for (w = signals [signum].head; w; w = w->next)
479	event (EV_A_ (W)w, EV_SIGNAL);
480	}
481	}	728	}
482		729
483	static void	730	void inline_size
		731	fd_intern (int fd)
		732	{
		733	#ifdef _WIN32
		734	int arg = 1;
		735	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		736	#else
		737	fcntl (fd, F_SETFD, FD_CLOEXEC);
		738	fcntl (fd, F_SETFL, O_NONBLOCK);
		739	#endif
		740	}
		741
		742	static void noinline
484	siginit (EV_P)	743	siginit (EV_P)
485	{	744	{
486	#ifndef WIN32	745	fd_intern (sigpipe [0]);
487	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	746	fd_intern (sigpipe [1]);
488	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
489
490	/* rather than sort out wether we really need nb, set it */
491	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
492	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
493	#endif
494		747
495	ev_io_set (&sigev, sigpipe [0], EV_READ);	748	ev_io_set (&sigev, sigpipe [0], EV_READ);
496	ev_io_start (EV_A_ &sigev);	749	ev_io_start (EV_A_ &sigev);
497	ev_unref (EV_A); /* child watcher should not keep loop alive */	750	ev_unref (EV_A); /* child watcher should not keep loop alive */
498	}	751	}
499		752
500	/*****************************************************************************/	753	/*****************************************************************************/
501		754
		755	static ev_child *childs [EV_PID_HASHSIZE];
		756
502	#ifndef WIN32	757	#ifndef _WIN32
503		758
504	static struct ev_child *childs [PID_HASHSIZE];
505	static struct ev_signal childev;	759	static ev_signal childev;
		760
		761	void inline_speed
		762	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		763	{
		764	ev_child *w;
		765
		766	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		767	if (w->pid == pid || !w->pid)
		768	{
		769	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		770	w->rpid = pid;
		771	w->rstatus = status;
		772	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		773	}
		774	}
506		775
507	#ifndef WCONTINUED	776	#ifndef WCONTINUED
508	# define WCONTINUED 0	777	# define WCONTINUED 0
509	#endif	778	#endif
510		779
511	static void	780	static void
512	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
513	{
514	struct ev_child *w;
515
516	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
517	if (w->pid == pid || !w->pid)
518	{
519	w->priority = sw->priority; /* need to do it *now* */
520	w->rpid = pid;
521	w->rstatus = status;
522	event (EV_A_ (W)w, EV_CHILD);
523	}
524	}
525
526	static void
527	childcb (EV_P_ struct ev_signal *sw, int revents)	781	childcb (EV_P_ ev_signal *sw, int revents)
528	{	782	{
529	int pid, status;	783	int pid, status;
530		784
		785	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
531	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	786	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
532	{	787	if (!WCONTINUED
		788	|| errno != EINVAL
		789	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		790	return;
		791
533	/* make sure we are called again until all childs have been reaped */	792	/* make sure we are called again until all childs have been reaped */
		793	/* we need to do it this way so that the callback gets called before we continue */
534	event (EV_A_ (W)sw, EV_SIGNAL);	794	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
535		795
536	child_reap (EV_A_ sw, pid, pid, status);	796	child_reap (EV_A_ sw, pid, pid, status);
		797	if (EV_PID_HASHSIZE > 1)
537	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	798	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
538	}
539	}	799	}
540		800
541	#endif	801	#endif
542		802
543	/*****************************************************************************/	803	/*****************************************************************************/
544		804
		805	#if EV_USE_PORT
		806	# include "ev_port.c"
		807	#endif
545	#if EV_USE_KQUEUE	808	#if EV_USE_KQUEUE
546	# include "ev_kqueue.c"	809	# include "ev_kqueue.c"
547	#endif	810	#endif
548	#if EV_USE_EPOLL	811	#if EV_USE_EPOLL
549	# include "ev_epoll.c"	812	# include "ev_epoll.c"
…		…
566	{	829	{
567	return EV_VERSION_MINOR;	830	return EV_VERSION_MINOR;
568	}	831	}
569		832
570	/* return true if we are running with elevated privileges and should ignore env variables */	833	/* return true if we are running with elevated privileges and should ignore env variables */
571	static int	834	int inline_size
572	enable_secure (void)	835	enable_secure (void)
573	{	836	{
574	#ifdef WIN32	837	#ifdef _WIN32
575	return 0;	838	return 0;
576	#else	839	#else
577	return getuid () != geteuid ()	840	return getuid () != geteuid ()
578	|| getgid () != getegid ();	841	|| getgid () != getegid ();
579	#endif	842	#endif
580	}	843	}
581		844
582	int	845	unsigned int
583	ev_method (EV_P)	846	ev_supported_backends (void)
584	{	847	{
585	return method;	848	unsigned int flags = 0;
586	}
587		849
588	static void	850	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
589	loop_init (EV_P_ int methods)	851	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		852	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		853	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		854	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		855
		856	return flags;
		857	}
		858
		859	unsigned int
		860	ev_recommended_backends (void)
590	{	861	{
591	if (!method)	862	unsigned int flags = ev_supported_backends ();
		863
		864	#ifndef __NetBSD__
		865	/* kqueue is borked on everything but netbsd apparently */
		866	/* it usually doesn't work correctly on anything but sockets and pipes */
		867	flags &= ~EVBACKEND_KQUEUE;
		868	#endif
		869	#ifdef __APPLE__
		870	// flags &= ~EVBACKEND_KQUEUE; for documentation
		871	flags &= ~EVBACKEND_POLL;
		872	#endif
		873
		874	return flags;
		875	}
		876
		877	unsigned int
		878	ev_embeddable_backends (void)
		879	{
		880	return EVBACKEND_EPOLL
		881	| EVBACKEND_KQUEUE
		882	| EVBACKEND_PORT;
		883	}
		884
		885	unsigned int
		886	ev_backend (EV_P)
		887	{
		888	return backend;
		889	}
		890
		891	unsigned int
		892	ev_loop_count (EV_P)
		893	{
		894	return loop_count;
		895	}
		896
		897	static void noinline
		898	loop_init (EV_P_ unsigned int flags)
		899	{
		900	if (!backend)
592	{	901	{
593	#if EV_USE_MONOTONIC	902	#if EV_USE_MONOTONIC
594	{	903	{
595	struct timespec ts;	904	struct timespec ts;
596	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	905	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
597	have_monotonic = 1;	906	have_monotonic = 1;
598	}	907	}
599	#endif	908	#endif
600		909
601	rt_now = ev_time ();	910	ev_rt_now = ev_time ();
602	mn_now = get_clock ();	911	mn_now = get_clock ();
603	now_floor = mn_now;	912	now_floor = mn_now;
604	rtmn_diff = rt_now - mn_now;	913	rtmn_diff = ev_rt_now - mn_now;
605		914
606	if (methods == EVMETHOD_AUTO)	915	/* pid check not overridable via env */
607	if (!enable_secure () && getenv ("LIBEV_METHODS"))	916	#ifndef _WIN32
		917	if (flags & EVFLAG_FORKCHECK)
		918	curpid = getpid ();
		919	#endif
		920
		921	if (!(flags & EVFLAG_NOENV)
		922	&& !enable_secure ()
		923	&& getenv ("LIBEV_FLAGS"))
608	methods = atoi (getenv ("LIBEV_METHODS"));	924	flags = atoi (getenv ("LIBEV_FLAGS"));
609	else
610	methods = EVMETHOD_ANY;
611		925
612	method = 0;	926	if (!(flags & 0x0000ffffUL))
		927	flags |= ev_recommended_backends ();
		928
		929	backend = 0;
		930	backend_fd = -1;
		931	#if EV_USE_INOTIFY
		932	fs_fd = -2;
		933	#endif
		934
		935	#if EV_USE_PORT
		936	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		937	#endif
613	#if EV_USE_KQUEUE	938	#if EV_USE_KQUEUE
614	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	939	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
615	#endif	940	#endif
616	#if EV_USE_EPOLL	941	#if EV_USE_EPOLL
617	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	942	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
618	#endif	943	#endif
619	#if EV_USE_POLL	944	#if EV_USE_POLL
620	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	945	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
621	#endif	946	#endif
622	#if EV_USE_SELECT	947	#if EV_USE_SELECT
623	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	948	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
624	#endif	949	#endif
625	}
626	}
627		950
628	void	951	ev_init (&sigev, sigcb);
		952	ev_set_priority (&sigev, EV_MAXPRI);
		953	}
		954	}
		955
		956	static void noinline
629	loop_destroy (EV_P)	957	loop_destroy (EV_P)
630	{	958	{
		959	int i;
		960
		961	#if EV_USE_INOTIFY
		962	if (fs_fd >= 0)
		963	close (fs_fd);
		964	#endif
		965
		966	if (backend_fd >= 0)
		967	close (backend_fd);
		968
		969	#if EV_USE_PORT
		970	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		971	#endif
631	#if EV_USE_KQUEUE	972	#if EV_USE_KQUEUE
632	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	973	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
633	#endif	974	#endif
634	#if EV_USE_EPOLL	975	#if EV_USE_EPOLL
635	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	976	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
636	#endif	977	#endif
637	#if EV_USE_POLL	978	#if EV_USE_POLL
638	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);	979	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
639	#endif	980	#endif
640	#if EV_USE_SELECT	981	#if EV_USE_SELECT
641	if (method == EVMETHOD_SELECT) select_destroy (EV_A);	982	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
642	#endif	983	#endif
643		984
644	method = 0;	985	for (i = NUMPRI; i--; )
645	/*TODO*/	986	array_free (pending, [i]);
646	}
647		987
648	void	988	/* have to use the microsoft-never-gets-it-right macro */
		989	array_free (fdchange, EMPTY0);
		990	array_free (timer, EMPTY0);
		991	#if EV_PERIODIC_ENABLE
		992	array_free (periodic, EMPTY0);
		993	#endif
		994	array_free (idle, EMPTY0);
		995	array_free (prepare, EMPTY0);
		996	array_free (check, EMPTY0);
		997
		998	backend = 0;
		999	}
		1000
		1001	void inline_size infy_fork (EV_P);
		1002
		1003	void inline_size
649	loop_fork (EV_P)	1004	loop_fork (EV_P)
650	{	1005	{
651	/*TODO*/	1006	#if EV_USE_PORT
		1007	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1008	#endif
		1009	#if EV_USE_KQUEUE
		1010	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1011	#endif
652	#if EV_USE_EPOLL	1012	#if EV_USE_EPOLL
653	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	1013	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
654	#endif	1014	#endif
655	#if EV_USE_KQUEUE	1015	#if EV_USE_INOTIFY
656	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);	1016	infy_fork (EV_A);
657	#endif	1017	#endif
		1018
		1019	if (ev_is_active (&sigev))
		1020	{
		1021	/* default loop */
		1022
		1023	ev_ref (EV_A);
		1024	ev_io_stop (EV_A_ &sigev);
		1025	close (sigpipe [0]);
		1026	close (sigpipe [1]);
		1027
		1028	while (pipe (sigpipe))
		1029	syserr ("(libev) error creating pipe");
		1030
		1031	siginit (EV_A);
		1032	}
		1033
		1034	postfork = 0;
658	}	1035	}
659		1036
660	#if EV_MULTIPLICITY	1037	#if EV_MULTIPLICITY
661	struct ev_loop *	1038	struct ev_loop *
662	ev_loop_new (int methods)	1039	ev_loop_new (unsigned int flags)
663	{	1040	{
664	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));	1041	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
665		1042
		1043	memset (loop, 0, sizeof (struct ev_loop));
		1044
666	loop_init (EV_A_ methods);	1045	loop_init (EV_A_ flags);
667		1046
668	if (ev_method (EV_A))	1047	if (ev_backend (EV_A))
669	return loop;	1048	return loop;
670		1049
671	return 0;	1050	return 0;
672	}	1051	}
673		1052
674	void	1053	void
675	ev_loop_destroy (EV_P)	1054	ev_loop_destroy (EV_P)
676	{	1055	{
677	loop_destroy (EV_A);	1056	loop_destroy (EV_A);
678	free (loop);	1057	ev_free (loop);
679	}	1058	}
680		1059
681	void	1060	void
682	ev_loop_fork (EV_P)	1061	ev_loop_fork (EV_P)
683	{	1062	{
684	loop_fork (EV_A);	1063	postfork = 1;
685	}	1064	}
686		1065
687	#endif	1066	#endif
688		1067
689	#if EV_MULTIPLICITY	1068	#if EV_MULTIPLICITY
690	struct ev_loop default_loop_struct;
691	static struct ev_loop *default_loop;
692
693	struct ev_loop *	1069	struct ev_loop *
		1070	ev_default_loop_init (unsigned int flags)
694	#else	1071	#else
695	static int default_loop;
696
697	int	1072	int
		1073	ev_default_loop (unsigned int flags)
698	#endif	1074	#endif
699	ev_default_loop (int methods)
700	{	1075	{
701	if (sigpipe [0] == sigpipe [1])	1076	if (sigpipe [0] == sigpipe [1])
702	if (pipe (sigpipe))	1077	if (pipe (sigpipe))
703	return 0;	1078	return 0;
704		1079
705	if (!default_loop)	1080	if (!ev_default_loop_ptr)
706	{	1081	{
707	#if EV_MULTIPLICITY	1082	#if EV_MULTIPLICITY
708	struct ev_loop *loop = default_loop = &default_loop_struct;	1083	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
709	#else	1084	#else
710	default_loop = 1;	1085	ev_default_loop_ptr = 1;
711	#endif	1086	#endif
712		1087
713	loop_init (EV_A_ methods);	1088	loop_init (EV_A_ flags);
714		1089
715	if (ev_method (EV_A))	1090	if (ev_backend (EV_A))
716	{	1091	{
717	ev_watcher_init (&sigev, sigcb);
718	ev_set_priority (&sigev, EV_MAXPRI);
719	siginit (EV_A);	1092	siginit (EV_A);
720		1093
721	#ifndef WIN32	1094	#ifndef _WIN32
722	ev_signal_init (&childev, childcb, SIGCHLD);	1095	ev_signal_init (&childev, childcb, SIGCHLD);
723	ev_set_priority (&childev, EV_MAXPRI);	1096	ev_set_priority (&childev, EV_MAXPRI);
724	ev_signal_start (EV_A_ &childev);	1097	ev_signal_start (EV_A_ &childev);
725	ev_unref (EV_A); /* child watcher should not keep loop alive */	1098	ev_unref (EV_A); /* child watcher should not keep loop alive */
726	#endif	1099	#endif
727	}	1100	}
728	else	1101	else
729	default_loop = 0;	1102	ev_default_loop_ptr = 0;
730	}	1103	}
731		1104
732	return default_loop;	1105	return ev_default_loop_ptr;
733	}	1106	}
734		1107
735	void	1108	void
736	ev_default_destroy (void)	1109	ev_default_destroy (void)
737	{	1110	{
738	#if EV_MULTIPLICITY	1111	#if EV_MULTIPLICITY
739	struct ev_loop *loop = default_loop;	1112	struct ev_loop *loop = ev_default_loop_ptr;
740	#endif	1113	#endif
741		1114
		1115	#ifndef _WIN32
742	ev_ref (EV_A); /* child watcher */	1116	ev_ref (EV_A); /* child watcher */
743	ev_signal_stop (EV_A_ &childev);	1117	ev_signal_stop (EV_A_ &childev);
		1118	#endif
744		1119
745	ev_ref (EV_A); /* signal watcher */	1120	ev_ref (EV_A); /* signal watcher */
746	ev_io_stop (EV_A_ &sigev);	1121	ev_io_stop (EV_A_ &sigev);
747		1122
748	close (sigpipe [0]); sigpipe [0] = 0;	1123	close (sigpipe [0]); sigpipe [0] = 0;
…		…
753		1128
754	void	1129	void
755	ev_default_fork (void)	1130	ev_default_fork (void)
756	{	1131	{
757	#if EV_MULTIPLICITY	1132	#if EV_MULTIPLICITY
758	struct ev_loop *loop = default_loop;	1133	struct ev_loop *loop = ev_default_loop_ptr;
759	#endif	1134	#endif
760		1135
761	loop_fork (EV_A);	1136	if (backend)
762		1137	postfork = 1;
763	ev_io_stop (EV_A_ &sigev);
764	close (sigpipe [0]);
765	close (sigpipe [1]);
766	pipe (sigpipe);
767
768	ev_ref (EV_A); /* signal watcher */
769	siginit (EV_A);
770	}	1138	}
771		1139
772	/*****************************************************************************/	1140	/*****************************************************************************/
773		1141
774	static void	1142	int inline_size
		1143	any_pending (EV_P)
		1144	{
		1145	int pri;
		1146
		1147	for (pri = NUMPRI; pri--; )
		1148	if (pendingcnt [pri])
		1149	return 1;
		1150
		1151	return 0;
		1152	}
		1153
		1154	void inline_speed
775	call_pending (EV_P)	1155	call_pending (EV_P)
776	{	1156	{
777	int pri;	1157	int pri;
778		1158
779	for (pri = NUMPRI; pri--; )	1159	for (pri = NUMPRI; pri--; )
780	while (pendingcnt [pri])	1160	while (pendingcnt [pri])
781	{	1161	{
782	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1162	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
783		1163
784	if (p->w)	1164	if (expect_true (p->w))
785	{	1165	{
		1166	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1167
786	p->w->pending = 0;	1168	p->w->pending = 0;
787	p->w->cb (EV_A_ p->w, p->events);	1169	EV_CB_INVOKE (p->w, p->events);
788	}	1170	}
789	}	1171	}
790	}	1172	}
791		1173
792	static void	1174	void inline_size
793	timers_reify (EV_P)	1175	timers_reify (EV_P)
794	{	1176	{
795	while (timercnt && timers [0]->at <= mn_now)	1177	while (timercnt && ((WT)timers [0])->at <= mn_now)
796	{	1178	{
797	struct ev_timer *w = timers [0];	1179	ev_timer *w = timers [0];
		1180
		1181	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
798		1182
799	/* first reschedule or stop timer */	1183	/* first reschedule or stop timer */
800	if (w->repeat)	1184	if (w->repeat)
801	{	1185	{
802	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1186	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1187
803	w->at = mn_now + w->repeat;	1188	((WT)w)->at += w->repeat;
		1189	if (((WT)w)->at < mn_now)
		1190	((WT)w)->at = mn_now;
		1191
804	downheap ((WT *)timers, timercnt, 0);	1192	downheap ((WT *)timers, timercnt, 0);
805	}	1193	}
806	else	1194	else
807	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1195	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
808		1196
809	event (EV_A_ (W)w, EV_TIMEOUT);	1197	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
810	}	1198	}
811	}	1199	}
812		1200
813	static void	1201	#if EV_PERIODIC_ENABLE
		1202	void inline_size
814	periodics_reify (EV_P)	1203	periodics_reify (EV_P)
815	{	1204	{
816	while (periodiccnt && periodics [0]->at <= rt_now)	1205	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
817	{	1206	{
818	struct ev_periodic *w = periodics [0];	1207	ev_periodic *w = periodics [0];
		1208
		1209	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
819		1210
820	/* first reschedule or stop timer */	1211	/* first reschedule or stop timer */
821	if (w->interval)	1212	if (w->reschedule_cb)
822	{	1213	{
		1214	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1215	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1216	downheap ((WT *)periodics, periodiccnt, 0);
		1217	}
		1218	else if (w->interval)
		1219	{
823	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1220	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
824	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1221	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
825	downheap ((WT *)periodics, periodiccnt, 0);	1222	downheap ((WT *)periodics, periodiccnt, 0);
826	}	1223	}
827	else	1224	else
828	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1225	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
829		1226
830	event (EV_A_ (W)w, EV_PERIODIC);	1227	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
831	}	1228	}
832	}	1229	}
833		1230
834	static void	1231	static void noinline
835	periodics_reschedule (EV_P)	1232	periodics_reschedule (EV_P)
836	{	1233	{
837	int i;	1234	int i;
838		1235
839	/* adjust periodics after time jump */	1236	/* adjust periodics after time jump */
840	for (i = 0; i < periodiccnt; ++i)	1237	for (i = 0; i < periodiccnt; ++i)
841	{	1238	{
842	struct ev_periodic *w = periodics [i];	1239	ev_periodic *w = periodics [i];
843		1240
		1241	if (w->reschedule_cb)
		1242	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
844	if (w->interval)	1243	else if (w->interval)
845	{
846	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1244	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
847
848	if (fabs (diff) >= 1e-4)
849	{
850	ev_periodic_stop (EV_A_ w);
851	ev_periodic_start (EV_A_ w);
852
853	i = 0; /* restart loop, inefficient, but time jumps should be rare */
854	}
855	}
856	}	1245	}
857	}
858		1246
859	inline int	1247	/* now rebuild the heap */
		1248	for (i = periodiccnt >> 1; i--; )
		1249	downheap ((WT *)periodics, periodiccnt, i);
		1250	}
		1251	#endif
		1252
		1253	int inline_size
860	time_update_monotonic (EV_P)	1254	time_update_monotonic (EV_P)
861	{	1255	{
862	mn_now = get_clock ();	1256	mn_now = get_clock ();
863		1257
864	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1258	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
865	{	1259	{
866	rt_now = rtmn_diff + mn_now;	1260	ev_rt_now = rtmn_diff + mn_now;
867	return 0;	1261	return 0;
868	}	1262	}
869	else	1263	else
870	{	1264	{
871	now_floor = mn_now;	1265	now_floor = mn_now;
872	rt_now = ev_time ();	1266	ev_rt_now = ev_time ();
873	return 1;	1267	return 1;
874	}	1268	}
875	}	1269	}
876		1270
877	static void	1271	void inline_size
878	time_update (EV_P)	1272	time_update (EV_P)
879	{	1273	{
880	int i;	1274	int i;
881		1275
882	#if EV_USE_MONOTONIC	1276	#if EV_USE_MONOTONIC
…		…
884	{	1278	{
885	if (time_update_monotonic (EV_A))	1279	if (time_update_monotonic (EV_A))
886	{	1280	{
887	ev_tstamp odiff = rtmn_diff;	1281	ev_tstamp odiff = rtmn_diff;
888		1282
889	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1283	/* loop a few times, before making important decisions.
		1284	* on the choice of "4": one iteration isn't enough,
		1285	* in case we get preempted during the calls to
		1286	* ev_time and get_clock. a second call is almost guaranteed
		1287	* to succeed in that case, though. and looping a few more times
		1288	* doesn't hurt either as we only do this on time-jumps or
		1289	* in the unlikely event of having been preempted here.
		1290	*/
		1291	for (i = 4; --i; )
890	{	1292	{
891	rtmn_diff = rt_now - mn_now;	1293	rtmn_diff = ev_rt_now - mn_now;
892		1294
893	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1295	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
894	return; /* all is well */	1296	return; /* all is well */
895		1297
896	rt_now = ev_time ();	1298	ev_rt_now = ev_time ();
897	mn_now = get_clock ();	1299	mn_now = get_clock ();
898	now_floor = mn_now;	1300	now_floor = mn_now;
899	}	1301	}
900		1302
		1303	# if EV_PERIODIC_ENABLE
901	periodics_reschedule (EV_A);	1304	periodics_reschedule (EV_A);
		1305	# endif
902	/* no timer adjustment, as the monotonic clock doesn't jump */	1306	/* no timer adjustment, as the monotonic clock doesn't jump */
903	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1307	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
904	}	1308	}
905	}	1309	}
906	else	1310	else
907	#endif	1311	#endif
908	{	1312	{
909	rt_now = ev_time ();	1313	ev_rt_now = ev_time ();
910		1314
911	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1315	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
912	{	1316	{
		1317	#if EV_PERIODIC_ENABLE
913	periodics_reschedule (EV_A);	1318	periodics_reschedule (EV_A);
		1319	#endif
914		1320
915	/* adjust timers. this is easy, as the offset is the same for all */	1321	/* adjust timers. this is easy, as the offset is the same for all of them */
916	for (i = 0; i < timercnt; ++i)	1322	for (i = 0; i < timercnt; ++i)
917	timers [i]->at += rt_now - mn_now;	1323	((WT)timers [i])->at += ev_rt_now - mn_now;
918	}	1324	}
919		1325
920	mn_now = rt_now;	1326	mn_now = ev_rt_now;
921	}	1327	}
922	}	1328	}
923		1329
924	void	1330	void
925	ev_ref (EV_P)	1331	ev_ref (EV_P)
…		…
936	static int loop_done;	1342	static int loop_done;
937		1343
938	void	1344	void
939	ev_loop (EV_P_ int flags)	1345	ev_loop (EV_P_ int flags)
940	{	1346	{
941	double block;
942	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1347	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1348	? EVUNLOOP_ONE
		1349	: EVUNLOOP_CANCEL;
		1350
		1351	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
943		1352
944	do	1353	do
945	{	1354	{
		1355	#ifndef _WIN32
		1356	if (expect_false (curpid)) /* penalise the forking check even more */
		1357	if (expect_false (getpid () != curpid))
		1358	{
		1359	curpid = getpid ();
		1360	postfork = 1;
		1361	}
		1362	#endif
		1363
		1364	#if EV_FORK_ENABLE
		1365	/* we might have forked, so queue fork handlers */
		1366	if (expect_false (postfork))
		1367	if (forkcnt)
		1368	{
		1369	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1370	call_pending (EV_A);
		1371	}
		1372	#endif
		1373
946	/* queue check watchers (and execute them) */	1374	/* queue check watchers (and execute them) */
947	if (expect_false (preparecnt))	1375	if (expect_false (preparecnt))
948	{	1376	{
949	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1377	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
950	call_pending (EV_A);	1378	call_pending (EV_A);
951	}	1379	}
952		1380
		1381	if (expect_false (!activecnt))
		1382	break;
		1383
		1384	/* we might have forked, so reify kernel state if necessary */
		1385	if (expect_false (postfork))
		1386	loop_fork (EV_A);
		1387
953	/* update fd-related kernel structures */	1388	/* update fd-related kernel structures */
954	fd_reify (EV_A);	1389	fd_reify (EV_A);
955		1390
956	/* calculate blocking time */	1391	/* calculate blocking time */
		1392	{
		1393	ev_tstamp block;
957		1394
958	/* we only need this for !monotonic clockor timers, but as we basically	1395	if (expect_false (flags & EVLOOP_NONBLOCK || idlecnt || !activecnt))
959	always have timers, we just calculate it always */	1396	block = 0.; /* do not block at all */
		1397	else
		1398	{
		1399	/* update time to cancel out callback processing overhead */
960	#if EV_USE_MONOTONIC	1400	#if EV_USE_MONOTONIC
961	if (expect_true (have_monotonic))	1401	if (expect_true (have_monotonic))
962	time_update_monotonic (EV_A);	1402	time_update_monotonic (EV_A);
963	else	1403	else
964	#endif	1404	#endif
965	{	1405	{
966	rt_now = ev_time ();	1406	ev_rt_now = ev_time ();
967	mn_now = rt_now;	1407	mn_now = ev_rt_now;
968	}	1408	}
969		1409
970	if (flags & EVLOOP_NONBLOCK || idlecnt)
971	block = 0.;
972	else
973	{
974	block = MAX_BLOCKTIME;	1410	block = MAX_BLOCKTIME;
975		1411
976	if (timercnt)	1412	if (timercnt)
977	{	1413	{
978	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1414	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
979	if (block > to) block = to;	1415	if (block > to) block = to;
980	}	1416	}
981		1417
		1418	#if EV_PERIODIC_ENABLE
982	if (periodiccnt)	1419	if (periodiccnt)
983	{	1420	{
984	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1421	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
985	if (block > to) block = to;	1422	if (block > to) block = to;
986	}	1423	}
		1424	#endif
987		1425
988	if (block < 0.) block = 0.;	1426	if (expect_false (block < 0.)) block = 0.;
989	}	1427	}
990		1428
		1429	++loop_count;
991	method_poll (EV_A_ block);	1430	backend_poll (EV_A_ block);
		1431	}
992		1432
993	/* update rt_now, do magic */	1433	/* update ev_rt_now, do magic */
994	time_update (EV_A);	1434	time_update (EV_A);
995		1435
996	/* queue pending timers and reschedule them */	1436	/* queue pending timers and reschedule them */
997	timers_reify (EV_A); /* relative timers called last */	1437	timers_reify (EV_A); /* relative timers called last */
		1438	#if EV_PERIODIC_ENABLE
998	periodics_reify (EV_A); /* absolute timers called first */	1439	periodics_reify (EV_A); /* absolute timers called first */
		1440	#endif
999		1441
1000	/* queue idle watchers unless io or timers are pending */	1442	/* queue idle watchers unless other events are pending */
1001	if (!pendingcnt)	1443	if (idlecnt && !any_pending (EV_A))
1002	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1444	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1003		1445
1004	/* queue check watchers, to be executed first */	1446	/* queue check watchers, to be executed first */
1005	if (checkcnt)	1447	if (expect_false (checkcnt))
1006	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1448	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1007		1449
1008	call_pending (EV_A);	1450	call_pending (EV_A);
		1451
1009	}	1452	}
1010	while (activecnt && !loop_done);	1453	while (expect_true (activecnt && !loop_done));
1011		1454
1012	if (loop_done != 2)	1455	if (loop_done == EVUNLOOP_ONE)
1013	loop_done = 0;	1456	loop_done = EVUNLOOP_CANCEL;
1014	}	1457	}
1015		1458
1016	void	1459	void
1017	ev_unloop (EV_P_ int how)	1460	ev_unloop (EV_P_ int how)
1018	{	1461	{
1019	loop_done = how;	1462	loop_done = how;
1020	}	1463	}
1021		1464
1022	/*****************************************************************************/	1465	/*****************************************************************************/
1023		1466
1024	inline void	1467	void inline_size
1025	wlist_add (WL *head, WL elem)	1468	wlist_add (WL *head, WL elem)
1026	{	1469	{
1027	elem->next = *head;	1470	elem->next = *head;
1028	*head = elem;	1471	*head = elem;
1029	}	1472	}
1030		1473
1031	inline void	1474	void inline_size
1032	wlist_del (WL *head, WL elem)	1475	wlist_del (WL *head, WL elem)
1033	{	1476	{
1034	while (*head)	1477	while (*head)
1035	{	1478	{
1036	if (*head == elem)	1479	if (*head == elem)
…		…
1041		1484
1042	head = &(*head)->next;	1485	head = &(*head)->next;
1043	}	1486	}
1044	}	1487	}
1045		1488
1046	inline void	1489	void inline_speed
1047	ev_clear_pending (EV_P_ W w)	1490	ev_clear_pending (EV_P_ W w)
1048	{	1491	{
1049	if (w->pending)	1492	if (w->pending)
1050	{	1493	{
1051	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1494	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1052	w->pending = 0;	1495	w->pending = 0;
1053	}	1496	}
1054	}	1497	}
1055		1498
1056	inline void	1499	void inline_speed
1057	ev_start (EV_P_ W w, int active)	1500	ev_start (EV_P_ W w, int active)
1058	{	1501	{
1059	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1502	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
1060	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1503	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1061		1504
1062	w->active = active;	1505	w->active = active;
1063	ev_ref (EV_A);	1506	ev_ref (EV_A);
1064	}	1507	}
1065		1508
1066	inline void	1509	void inline_size
1067	ev_stop (EV_P_ W w)	1510	ev_stop (EV_P_ W w)
1068	{	1511	{
1069	ev_unref (EV_A);	1512	ev_unref (EV_A);
1070	w->active = 0;	1513	w->active = 0;
1071	}	1514	}
1072		1515
1073	/*****************************************************************************/	1516	/*****************************************************************************/
1074		1517
1075	void	1518	void
1076	ev_io_start (EV_P_ struct ev_io *w)	1519	ev_io_start (EV_P_ ev_io *w)
1077	{	1520	{
1078	int fd = w->fd;	1521	int fd = w->fd;
1079		1522
1080	if (ev_is_active (w))	1523	if (expect_false (ev_is_active (w)))
1081	return;	1524	return;
1082		1525
1083	assert (("ev_io_start called with negative fd", fd >= 0));	1526	assert (("ev_io_start called with negative fd", fd >= 0));
1084		1527
1085	ev_start (EV_A_ (W)w, 1);	1528	ev_start (EV_A_ (W)w, 1);
1086	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1529	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1087	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1530	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1088		1531
1089	fd_change (EV_A_ fd);	1532	fd_change (EV_A_ fd);
1090	}	1533	}
1091		1534
1092	void	1535	void
1093	ev_io_stop (EV_P_ struct ev_io *w)	1536	ev_io_stop (EV_P_ ev_io *w)
1094	{	1537	{
1095	ev_clear_pending (EV_A_ (W)w);	1538	ev_clear_pending (EV_A_ (W)w);
1096	if (!ev_is_active (w))	1539	if (expect_false (!ev_is_active (w)))
1097	return;	1540	return;
		1541
		1542	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1098		1543
1099	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1544	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1100	ev_stop (EV_A_ (W)w);	1545	ev_stop (EV_A_ (W)w);
1101		1546
1102	fd_change (EV_A_ w->fd);	1547	fd_change (EV_A_ w->fd);
1103	}	1548	}
1104		1549
1105	void	1550	void
1106	ev_timer_start (EV_P_ struct ev_timer *w)	1551	ev_timer_start (EV_P_ ev_timer *w)
1107	{	1552	{
1108	if (ev_is_active (w))	1553	if (expect_false (ev_is_active (w)))
1109	return;	1554	return;
1110		1555
1111	w->at += mn_now;	1556	((WT)w)->at += mn_now;
1112		1557
1113	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1558	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1114		1559
1115	ev_start (EV_A_ (W)w, ++timercnt);	1560	ev_start (EV_A_ (W)w, ++timercnt);
1116	array_needsize (timers, timermax, timercnt, );	1561	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1117	timers [timercnt - 1] = w;	1562	timers [timercnt - 1] = w;
1118	upheap ((WT *)timers, timercnt - 1);	1563	upheap ((WT *)timers, timercnt - 1);
1119	}
1120		1564
		1565	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1566	}
		1567
1121	void	1568	void
1122	ev_timer_stop (EV_P_ struct ev_timer *w)	1569	ev_timer_stop (EV_P_ ev_timer *w)
1123	{	1570	{
1124	ev_clear_pending (EV_A_ (W)w);	1571	ev_clear_pending (EV_A_ (W)w);
1125	if (!ev_is_active (w))	1572	if (expect_false (!ev_is_active (w)))
1126	return;	1573	return;
1127		1574
1128	if (w->active < timercnt--)	1575	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1576
		1577	{
		1578	int active = ((W)w)->active;
		1579
		1580	if (expect_true (--active < --timercnt))
1129	{	1581	{
1130	timers [w->active - 1] = timers [timercnt];	1582	timers [active] = timers [timercnt];
1131	downheap ((WT *)timers, timercnt, w->active - 1);	1583	adjustheap ((WT *)timers, timercnt, active);
1132	}	1584	}
		1585	}
1133		1586
1134	w->at = w->repeat;	1587	((WT)w)->at -= mn_now;
1135		1588
1136	ev_stop (EV_A_ (W)w);	1589	ev_stop (EV_A_ (W)w);
1137	}	1590	}
1138		1591
1139	void	1592	void
1140	ev_timer_again (EV_P_ struct ev_timer *w)	1593	ev_timer_again (EV_P_ ev_timer *w)
1141	{	1594	{
1142	if (ev_is_active (w))	1595	if (ev_is_active (w))
1143	{	1596	{
1144	if (w->repeat)	1597	if (w->repeat)
1145	{	1598	{
1146	w->at = mn_now + w->repeat;	1599	((WT)w)->at = mn_now + w->repeat;
1147	downheap ((WT *)timers, timercnt, w->active - 1);	1600	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1148	}	1601	}
1149	else	1602	else
1150	ev_timer_stop (EV_A_ w);	1603	ev_timer_stop (EV_A_ w);
1151	}	1604	}
1152	else if (w->repeat)	1605	else if (w->repeat)
		1606	{
		1607	w->at = w->repeat;
1153	ev_timer_start (EV_A_ w);	1608	ev_timer_start (EV_A_ w);
		1609	}
1154	}	1610	}
1155		1611
		1612	#if EV_PERIODIC_ENABLE
1156	void	1613	void
1157	ev_periodic_start (EV_P_ struct ev_periodic *w)	1614	ev_periodic_start (EV_P_ ev_periodic *w)
1158	{	1615	{
1159	if (ev_is_active (w))	1616	if (expect_false (ev_is_active (w)))
1160	return;	1617	return;
1161		1618
		1619	if (w->reschedule_cb)
		1620	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1621	else if (w->interval)
		1622	{
1162	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1623	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1163
1164	/* this formula differs from the one in periodic_reify because we do not always round up */	1624	/* this formula differs from the one in periodic_reify because we do not always round up */
1165	if (w->interval)
1166	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1625	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1626	}
1167		1627
1168	ev_start (EV_A_ (W)w, ++periodiccnt);	1628	ev_start (EV_A_ (W)w, ++periodiccnt);
1169	array_needsize (periodics, periodicmax, periodiccnt, );	1629	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1170	periodics [periodiccnt - 1] = w;	1630	periodics [periodiccnt - 1] = w;
1171	upheap ((WT *)periodics, periodiccnt - 1);	1631	upheap ((WT *)periodics, periodiccnt - 1);
1172	}
1173		1632
		1633	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1634	}
		1635
1174	void	1636	void
1175	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1637	ev_periodic_stop (EV_P_ ev_periodic *w)
1176	{	1638	{
1177	ev_clear_pending (EV_A_ (W)w);	1639	ev_clear_pending (EV_A_ (W)w);
1178	if (!ev_is_active (w))	1640	if (expect_false (!ev_is_active (w)))
1179	return;	1641	return;
1180		1642
1181	if (w->active < periodiccnt--)	1643	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1644
		1645	{
		1646	int active = ((W)w)->active;
		1647
		1648	if (expect_true (--active < --periodiccnt))
1182	{	1649	{
1183	periodics [w->active - 1] = periodics [periodiccnt];	1650	periodics [active] = periodics [periodiccnt];
1184	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1651	adjustheap ((WT *)periodics, periodiccnt, active);
1185	}	1652	}
		1653	}
1186		1654
1187	ev_stop (EV_A_ (W)w);	1655	ev_stop (EV_A_ (W)w);
1188	}	1656	}
1189		1657
1190	void	1658	void
1191	ev_idle_start (EV_P_ struct ev_idle *w)	1659	ev_periodic_again (EV_P_ ev_periodic *w)
1192	{	1660	{
1193	if (ev_is_active (w))	1661	/* TODO: use adjustheap and recalculation */
1194	return;
1195
1196	ev_start (EV_A_ (W)w, ++idlecnt);
1197	array_needsize (idles, idlemax, idlecnt, );
1198	idles [idlecnt - 1] = w;
1199	}
1200
1201	void
1202	ev_idle_stop (EV_P_ struct ev_idle *w)
1203	{
1204	ev_clear_pending (EV_A_ (W)w);
1205	if (ev_is_active (w))
1206	return;
1207
1208	idles [w->active - 1] = idles [--idlecnt];
1209	ev_stop (EV_A_ (W)w);	1662	ev_periodic_stop (EV_A_ w);
		1663	ev_periodic_start (EV_A_ w);
1210	}	1664	}
1211		1665	#endif
1212	void
1213	ev_prepare_start (EV_P_ struct ev_prepare *w)
1214	{
1215	if (ev_is_active (w))
1216	return;
1217
1218	ev_start (EV_A_ (W)w, ++preparecnt);
1219	array_needsize (prepares, preparemax, preparecnt, );
1220	prepares [preparecnt - 1] = w;
1221	}
1222
1223	void
1224	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1225	{
1226	ev_clear_pending (EV_A_ (W)w);
1227	if (ev_is_active (w))
1228	return;
1229
1230	prepares [w->active - 1] = prepares [--preparecnt];
1231	ev_stop (EV_A_ (W)w);
1232	}
1233
1234	void
1235	ev_check_start (EV_P_ struct ev_check *w)
1236	{
1237	if (ev_is_active (w))
1238	return;
1239
1240	ev_start (EV_A_ (W)w, ++checkcnt);
1241	array_needsize (checks, checkmax, checkcnt, );
1242	checks [checkcnt - 1] = w;
1243	}
1244
1245	void
1246	ev_check_stop (EV_P_ struct ev_check *w)
1247	{
1248	ev_clear_pending (EV_A_ (W)w);
1249	if (ev_is_active (w))
1250	return;
1251
1252	checks [w->active - 1] = checks [--checkcnt];
1253	ev_stop (EV_A_ (W)w);
1254	}
1255		1666
1256	#ifndef SA_RESTART	1667	#ifndef SA_RESTART
1257	# define SA_RESTART 0	1668	# define SA_RESTART 0
1258	#endif	1669	#endif
1259		1670
1260	void	1671	void
1261	ev_signal_start (EV_P_ struct ev_signal *w)	1672	ev_signal_start (EV_P_ ev_signal *w)
1262	{	1673	{
1263	#if EV_MULTIPLICITY	1674	#if EV_MULTIPLICITY
1264	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1675	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1265	#endif	1676	#endif
1266	if (ev_is_active (w))	1677	if (expect_false (ev_is_active (w)))
1267	return;	1678	return;
1268		1679
1269	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1680	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1270		1681
1271	ev_start (EV_A_ (W)w, 1);	1682	ev_start (EV_A_ (W)w, 1);
1272	array_needsize (signals, signalmax, w->signum, signals_init);	1683	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1273	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1684	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1274		1685
1275	if (!w->next)	1686	if (!((WL)w)->next)
1276	{	1687	{
		1688	#if _WIN32
		1689	signal (w->signum, sighandler);
		1690	#else
1277	struct sigaction sa;	1691	struct sigaction sa;
1278	sa.sa_handler = sighandler;	1692	sa.sa_handler = sighandler;
1279	sigfillset (&sa.sa_mask);	1693	sigfillset (&sa.sa_mask);
1280	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1694	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1281	sigaction (w->signum, &sa, 0);	1695	sigaction (w->signum, &sa, 0);
		1696	#endif
1282	}	1697	}
1283	}	1698	}
1284		1699
1285	void	1700	void
1286	ev_signal_stop (EV_P_ struct ev_signal *w)	1701	ev_signal_stop (EV_P_ ev_signal *w)
1287	{	1702	{
1288	ev_clear_pending (EV_A_ (W)w);	1703	ev_clear_pending (EV_A_ (W)w);
1289	if (!ev_is_active (w))	1704	if (expect_false (!ev_is_active (w)))
1290	return;	1705	return;
1291		1706
1292	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1707	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1293	ev_stop (EV_A_ (W)w);	1708	ev_stop (EV_A_ (W)w);
1294		1709
1295	if (!signals [w->signum - 1].head)	1710	if (!signals [w->signum - 1].head)
1296	signal (w->signum, SIG_DFL);	1711	signal (w->signum, SIG_DFL);
1297	}	1712	}
1298		1713
1299	void	1714	void
1300	ev_child_start (EV_P_ struct ev_child *w)	1715	ev_child_start (EV_P_ ev_child *w)
1301	{	1716	{
1302	#if EV_MULTIPLICITY	1717	#if EV_MULTIPLICITY
1303	assert (("child watchers are only supported in the default loop", loop == default_loop));	1718	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1304	#endif	1719	#endif
1305	if (ev_is_active (w))	1720	if (expect_false (ev_is_active (w)))
1306	return;	1721	return;
1307		1722
1308	ev_start (EV_A_ (W)w, 1);	1723	ev_start (EV_A_ (W)w, 1);
1309	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1724	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1310	}	1725	}
1311		1726
1312	void	1727	void
1313	ev_child_stop (EV_P_ struct ev_child *w)	1728	ev_child_stop (EV_P_ ev_child *w)
1314	{	1729	{
1315	ev_clear_pending (EV_A_ (W)w);	1730	ev_clear_pending (EV_A_ (W)w);
1316	if (ev_is_active (w))	1731	if (expect_false (!ev_is_active (w)))
1317	return;	1732	return;
1318		1733
1319	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1734	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1320	ev_stop (EV_A_ (W)w);	1735	ev_stop (EV_A_ (W)w);
1321	}	1736	}
1322		1737
		1738	#if EV_STAT_ENABLE
		1739
		1740	# ifdef _WIN32
		1741	# undef lstat
		1742	# define lstat(a,b) _stati64 (a,b)
		1743	# endif
		1744
		1745	#define DEF_STAT_INTERVAL 5.0074891
		1746	#define MIN_STAT_INTERVAL 0.1074891
		1747
		1748	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1749
		1750	#if EV_USE_INOTIFY
		1751	# define EV_INOTIFY_BUFSIZE 8192
		1752
		1753	static void noinline
		1754	infy_add (EV_P_ ev_stat *w)
		1755	{
		1756	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
		1757
		1758	if (w->wd < 0)
		1759	{
		1760	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1761
		1762	/* monitor some parent directory for speedup hints */
		1763	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1764	{
		1765	char path [4096];
		1766	strcpy (path, w->path);
		1767
		1768	do
		1769	{
		1770	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1771	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1772
		1773	char *pend = strrchr (path, '/');
		1774
		1775	if (!pend)
		1776	break; /* whoops, no '/', complain to your admin */
		1777
		1778	*pend = 0;
		1779	w->wd = inotify_add_watch (fs_fd, path, mask);
		1780	}
		1781	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1782	}
		1783	}
		1784	else
		1785	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1786
		1787	if (w->wd >= 0)
		1788	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1789	}
		1790
		1791	static void noinline
		1792	infy_del (EV_P_ ev_stat *w)
		1793	{
		1794	int slot;
		1795	int wd = w->wd;
		1796
		1797	if (wd < 0)
		1798	return;
		1799
		1800	w->wd = -2;
		1801	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1802	wlist_del (&fs_hash [slot].head, (WL)w);
		1803
		1804	/* remove this watcher, if others are watching it, they will rearm */
		1805	inotify_rm_watch (fs_fd, wd);
		1806	}
		1807
		1808	static void noinline
		1809	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1810	{
		1811	if (slot < 0)
		1812	/* overflow, need to check for all hahs slots */
		1813	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1814	infy_wd (EV_A_ slot, wd, ev);
		1815	else
		1816	{
		1817	WL w_;
		1818
		1819	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1820	{
		1821	ev_stat *w = (ev_stat *)w_;
		1822	w_ = w_->next; /* lets us remove this watcher and all before it */
		1823
		1824	if (w->wd == wd || wd == -1)
		1825	{
		1826	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1827	{
		1828	w->wd = -1;
		1829	infy_add (EV_A_ w); /* re-add, no matter what */
		1830	}
		1831
		1832	stat_timer_cb (EV_A_ &w->timer, 0);
		1833	}
		1834	}
		1835	}
		1836	}
		1837
		1838	static void
		1839	infy_cb (EV_P_ ev_io *w, int revents)
		1840	{
		1841	char buf [EV_INOTIFY_BUFSIZE];
		1842	struct inotify_event *ev = (struct inotify_event *)buf;
		1843	int ofs;
		1844	int len = read (fs_fd, buf, sizeof (buf));
		1845
		1846	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1847	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1848	}
		1849
		1850	void inline_size
		1851	infy_init (EV_P)
		1852	{
		1853	if (fs_fd != -2)
		1854	return;
		1855
		1856	fs_fd = inotify_init ();
		1857
		1858	if (fs_fd >= 0)
		1859	{
		1860	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1861	ev_set_priority (&fs_w, EV_MAXPRI);
		1862	ev_io_start (EV_A_ &fs_w);
		1863	}
		1864	}
		1865
		1866	void inline_size
		1867	infy_fork (EV_P)
		1868	{
		1869	int slot;
		1870
		1871	if (fs_fd < 0)
		1872	return;
		1873
		1874	close (fs_fd);
		1875	fs_fd = inotify_init ();
		1876
		1877	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1878	{
		1879	WL w_ = fs_hash [slot].head;
		1880	fs_hash [slot].head = 0;
		1881
		1882	while (w_)
		1883	{
		1884	ev_stat *w = (ev_stat *)w_;
		1885	w_ = w_->next; /* lets us add this watcher */
		1886
		1887	w->wd = -1;
		1888
		1889	if (fs_fd >= 0)
		1890	infy_add (EV_A_ w); /* re-add, no matter what */
		1891	else
		1892	ev_timer_start (EV_A_ &w->timer);
		1893	}
		1894
		1895	}
		1896	}
		1897
		1898	#endif
		1899
		1900	void
		1901	ev_stat_stat (EV_P_ ev_stat *w)
		1902	{
		1903	if (lstat (w->path, &w->attr) < 0)
		1904	w->attr.st_nlink = 0;
		1905	else if (!w->attr.st_nlink)
		1906	w->attr.st_nlink = 1;
		1907	}
		1908
		1909	static void noinline
		1910	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1911	{
		1912	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1913
		1914	/* we copy this here each the time so that */
		1915	/* prev has the old value when the callback gets invoked */
		1916	w->prev = w->attr;
		1917	ev_stat_stat (EV_A_ w);
		1918
		1919	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1920	if (
		1921	w->prev.st_dev != w->attr.st_dev
		1922	|| w->prev.st_ino != w->attr.st_ino
		1923	|| w->prev.st_mode != w->attr.st_mode
		1924	|| w->prev.st_nlink != w->attr.st_nlink
		1925	|| w->prev.st_uid != w->attr.st_uid
		1926	|| w->prev.st_gid != w->attr.st_gid
		1927	|| w->prev.st_rdev != w->attr.st_rdev
		1928	|| w->prev.st_size != w->attr.st_size
		1929	|| w->prev.st_atime != w->attr.st_atime
		1930	|| w->prev.st_mtime != w->attr.st_mtime
		1931	|| w->prev.st_ctime != w->attr.st_ctime
		1932	) {
		1933	#if EV_USE_INOTIFY
		1934	infy_del (EV_A_ w);
		1935	infy_add (EV_A_ w);
		1936	ev_stat_stat (EV_A_ w); /* avoid race... */
		1937	#endif
		1938
		1939	ev_feed_event (EV_A_ w, EV_STAT);
		1940	}
		1941	}
		1942
		1943	void
		1944	ev_stat_start (EV_P_ ev_stat *w)
		1945	{
		1946	if (expect_false (ev_is_active (w)))
		1947	return;
		1948
		1949	/* since we use memcmp, we need to clear any padding data etc. */
		1950	memset (&w->prev, 0, sizeof (ev_statdata));
		1951	memset (&w->attr, 0, sizeof (ev_statdata));
		1952
		1953	ev_stat_stat (EV_A_ w);
		1954
		1955	if (w->interval < MIN_STAT_INTERVAL)
		1956	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1957
		1958	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1959	ev_set_priority (&w->timer, ev_priority (w));
		1960
		1961	#if EV_USE_INOTIFY
		1962	infy_init (EV_A);
		1963
		1964	if (fs_fd >= 0)
		1965	infy_add (EV_A_ w);
		1966	else
		1967	#endif
		1968	ev_timer_start (EV_A_ &w->timer);
		1969
		1970	ev_start (EV_A_ (W)w, 1);
		1971	}
		1972
		1973	void
		1974	ev_stat_stop (EV_P_ ev_stat *w)
		1975	{
		1976	ev_clear_pending (EV_A_ (W)w);
		1977	if (expect_false (!ev_is_active (w)))
		1978	return;
		1979
		1980	#if EV_USE_INOTIFY
		1981	infy_del (EV_A_ w);
		1982	#endif
		1983	ev_timer_stop (EV_A_ &w->timer);
		1984
		1985	ev_stop (EV_A_ (W)w);
		1986	}
		1987	#endif
		1988
		1989	void
		1990	ev_idle_start (EV_P_ ev_idle *w)
		1991	{
		1992	if (expect_false (ev_is_active (w)))
		1993	return;
		1994
		1995	ev_start (EV_A_ (W)w, ++idlecnt);
		1996	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1997	idles [idlecnt - 1] = w;
		1998	}
		1999
		2000	void
		2001	ev_idle_stop (EV_P_ ev_idle *w)
		2002	{
		2003	ev_clear_pending (EV_A_ (W)w);
		2004	if (expect_false (!ev_is_active (w)))
		2005	return;
		2006
		2007	{
		2008	int active = ((W)w)->active;
		2009	idles [active - 1] = idles [--idlecnt];
		2010	((W)idles [active - 1])->active = active;
		2011	}
		2012
		2013	ev_stop (EV_A_ (W)w);
		2014	}
		2015
		2016	void
		2017	ev_prepare_start (EV_P_ ev_prepare *w)
		2018	{
		2019	if (expect_false (ev_is_active (w)))
		2020	return;
		2021
		2022	ev_start (EV_A_ (W)w, ++preparecnt);
		2023	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2024	prepares [preparecnt - 1] = w;
		2025	}
		2026
		2027	void
		2028	ev_prepare_stop (EV_P_ ev_prepare *w)
		2029	{
		2030	ev_clear_pending (EV_A_ (W)w);
		2031	if (expect_false (!ev_is_active (w)))
		2032	return;
		2033
		2034	{
		2035	int active = ((W)w)->active;
		2036	prepares [active - 1] = prepares [--preparecnt];
		2037	((W)prepares [active - 1])->active = active;
		2038	}
		2039
		2040	ev_stop (EV_A_ (W)w);
		2041	}
		2042
		2043	void
		2044	ev_check_start (EV_P_ ev_check *w)
		2045	{
		2046	if (expect_false (ev_is_active (w)))
		2047	return;
		2048
		2049	ev_start (EV_A_ (W)w, ++checkcnt);
		2050	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2051	checks [checkcnt - 1] = w;
		2052	}
		2053
		2054	void
		2055	ev_check_stop (EV_P_ ev_check *w)
		2056	{
		2057	ev_clear_pending (EV_A_ (W)w);
		2058	if (expect_false (!ev_is_active (w)))
		2059	return;
		2060
		2061	{
		2062	int active = ((W)w)->active;
		2063	checks [active - 1] = checks [--checkcnt];
		2064	((W)checks [active - 1])->active = active;
		2065	}
		2066
		2067	ev_stop (EV_A_ (W)w);
		2068	}
		2069
		2070	#if EV_EMBED_ENABLE
		2071	void noinline
		2072	ev_embed_sweep (EV_P_ ev_embed *w)
		2073	{
		2074	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2075	}
		2076
		2077	static void
		2078	embed_cb (EV_P_ ev_io *io, int revents)
		2079	{
		2080	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2081
		2082	if (ev_cb (w))
		2083	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2084	else
		2085	ev_embed_sweep (loop, w);
		2086	}
		2087
		2088	void
		2089	ev_embed_start (EV_P_ ev_embed *w)
		2090	{
		2091	if (expect_false (ev_is_active (w)))
		2092	return;
		2093
		2094	{
		2095	struct ev_loop *loop = w->loop;
		2096	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2097	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2098	}
		2099
		2100	ev_set_priority (&w->io, ev_priority (w));
		2101	ev_io_start (EV_A_ &w->io);
		2102
		2103	ev_start (EV_A_ (W)w, 1);
		2104	}
		2105
		2106	void
		2107	ev_embed_stop (EV_P_ ev_embed *w)
		2108	{
		2109	ev_clear_pending (EV_A_ (W)w);
		2110	if (expect_false (!ev_is_active (w)))
		2111	return;
		2112
		2113	ev_io_stop (EV_A_ &w->io);
		2114
		2115	ev_stop (EV_A_ (W)w);
		2116	}
		2117	#endif
		2118
		2119	#if EV_FORK_ENABLE
		2120	void
		2121	ev_fork_start (EV_P_ ev_fork *w)
		2122	{
		2123	if (expect_false (ev_is_active (w)))
		2124	return;
		2125
		2126	ev_start (EV_A_ (W)w, ++forkcnt);
		2127	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2128	forks [forkcnt - 1] = w;
		2129	}
		2130
		2131	void
		2132	ev_fork_stop (EV_P_ ev_fork *w)
		2133	{
		2134	ev_clear_pending (EV_A_ (W)w);
		2135	if (expect_false (!ev_is_active (w)))
		2136	return;
		2137
		2138	{
		2139	int active = ((W)w)->active;
		2140	forks [active - 1] = forks [--forkcnt];
		2141	((W)forks [active - 1])->active = active;
		2142	}
		2143
		2144	ev_stop (EV_A_ (W)w);
		2145	}
		2146	#endif
		2147
1323	/*****************************************************************************/	2148	/*****************************************************************************/
1324		2149
1325	struct ev_once	2150	struct ev_once
1326	{	2151	{
1327	struct ev_io io;	2152	ev_io io;
1328	struct ev_timer to;	2153	ev_timer to;
1329	void (*cb)(int revents, void *arg);	2154	void (*cb)(int revents, void *arg);
1330	void *arg;	2155	void *arg;
1331	};	2156	};
1332		2157
1333	static void	2158	static void
…		…
1336	void (*cb)(int revents, void *arg) = once->cb;	2161	void (*cb)(int revents, void *arg) = once->cb;
1337	void *arg = once->arg;	2162	void *arg = once->arg;
1338		2163
1339	ev_io_stop (EV_A_ &once->io);	2164	ev_io_stop (EV_A_ &once->io);
1340	ev_timer_stop (EV_A_ &once->to);	2165	ev_timer_stop (EV_A_ &once->to);
1341	free (once);	2166	ev_free (once);
1342		2167
1343	cb (revents, arg);	2168	cb (revents, arg);
1344	}	2169	}
1345		2170
1346	static void	2171	static void
1347	once_cb_io (EV_P_ struct ev_io *w, int revents)	2172	once_cb_io (EV_P_ ev_io *w, int revents)
1348	{	2173	{
1349	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2174	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1350	}	2175	}
1351		2176
1352	static void	2177	static void
1353	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2178	once_cb_to (EV_P_ ev_timer *w, int revents)
1354	{	2179	{
1355	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2180	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1356	}	2181	}
1357		2182
1358	void	2183	void
1359	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2184	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1360	{	2185	{
1361	struct ev_once *once = malloc (sizeof (struct ev_once));	2186	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1362		2187
1363	if (!once)	2188	if (expect_false (!once))
		2189	{
1364	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2190	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1365	else	2191	return;
1366	{	2192	}
		2193
1367	once->cb = cb;	2194	once->cb = cb;
1368	once->arg = arg;	2195	once->arg = arg;
1369		2196
1370	ev_watcher_init (&once->io, once_cb_io);	2197	ev_init (&once->io, once_cb_io);
1371	if (fd >= 0)	2198	if (fd >= 0)
1372	{	2199	{
1373	ev_io_set (&once->io, fd, events);	2200	ev_io_set (&once->io, fd, events);
1374	ev_io_start (EV_A_ &once->io);	2201	ev_io_start (EV_A_ &once->io);
1375	}	2202	}
1376		2203
1377	ev_watcher_init (&once->to, once_cb_to);	2204	ev_init (&once->to, once_cb_to);
1378	if (timeout >= 0.)	2205	if (timeout >= 0.)
1379	{	2206	{
1380	ev_timer_set (&once->to, timeout, 0.);	2207	ev_timer_set (&once->to, timeout, 0.);
1381	ev_timer_start (EV_A_ &once->to);	2208	ev_timer_start (EV_A_ &once->to);
1382	}
1383	}	2209	}
1384	}	2210	}
1385		2211
		2212	#ifdef __cplusplus
		2213	}
		2214	#endif
		2215

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